2012-07-28 04:23:05 +08:00
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/* *INDENT-OFF* */ /* THIS FILE IS GENERATED -*- buffer-read-only: t -*- */
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/* vi:set ro: */
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2000-03-30 13:32:23 +08:00
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1999-07-20 07:30:11 +08:00
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/* Dynamic architecture support for GDB, the GNU debugger.
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2004-01-18 07:21:21 +08:00
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2016-01-01 12:33:14 +08:00
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Copyright (C) 1998-2016 Free Software Foundation, Inc.
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1999-04-16 09:35:26 +08:00
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1999-07-08 04:19:36 +08:00
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This file is part of GDB.
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1999-04-16 09:35:26 +08:00
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1999-07-08 04:19:36 +08:00
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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2007-08-24 02:08:50 +08:00
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the Free Software Foundation; either version 3 of the License, or
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1999-07-08 04:19:36 +08:00
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(at your option) any later version.
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2016-01-01 12:33:14 +08:00
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1999-07-08 04:19:36 +08:00
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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2016-01-01 12:33:14 +08:00
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1999-07-08 04:19:36 +08:00
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You should have received a copy of the GNU General Public License
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2007-08-24 02:08:50 +08:00
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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1999-04-16 09:35:26 +08:00
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1999-08-31 09:14:27 +08:00
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/* This file was created with the aid of ``gdbarch.sh''.
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2000-08-26 04:51:19 +08:00
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The Bourne shell script ``gdbarch.sh'' creates the files
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1999-08-31 09:14:27 +08:00
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``new-gdbarch.c'' and ``new-gdbarch.h and then compares them
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against the existing ``gdbarch.[hc]''. Any differences found
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being reported.
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If editing this file, please also run gdbarch.sh and merge any
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2000-08-26 04:51:19 +08:00
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changes into that script. Conversely, when making sweeping changes
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1999-08-31 09:14:27 +08:00
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to this file, modifying gdbarch.sh and using its output may prove
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2011-01-08 03:36:19 +08:00
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easier. */
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1999-07-20 07:30:11 +08:00
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1999-04-16 09:35:26 +08:00
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#ifndef GDBARCH_H
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#define GDBARCH_H
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2014-08-14 02:15:00 +08:00
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#include "frame.h"
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2003-04-12 Andrew Cagney <cagney@redhat.com>
* gdbarch.sh: Add missing opaque declarations.
* gdbarch.h: Regnerate.
* symtab.h: Add missing opaque declarations.
* value.h, target.h, symfile.h, stabsread.h: Ditto.
* x86-64-tdep.h, xmodem.h, monitor.h, typeprint.h: Ditto.
* srec.h, solib-svr4.h, source.h, inferior.h: Ditto.
* ser-unix.h, serial.h, remote-utils.h, gdbcore.h: Ditto.
* ppc-tdep.h, ocd.h, mips-tdep.h, gdbtypes.h: Ditto.
* buildsym.h, builtin-regs.h, linespec.h, language.h: Ditto.
* i387-tdep.h, gdbthread.h, event-top.h, gdb.h: Ditto.
* dwarf2cfi.h, doublest.h, disasm.h, cp-abi.h: Ditto.
* cli-out.h, c-lang.h, ax-gdb.h, arch-utils.h: Ditto.
* ada-lang.h, config/nm-lynx.h, config/nm-linux.h: Ditto.
* config/sparc/tm-sp64.h, config/rs6000/tm-rs6000.h: Ditto.
* config/pa/tm-hppah.h, config/m68k/tm-delta68.h: Ditto.
* cli/cli-setshow.h, cli/cli-script.h: Ditto.
2003-04-13 01:41:26 +08:00
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struct floatformat;
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struct ui_file;
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1999-06-08 03:19:32 +08:00
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struct value;
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2001-12-07 20:10:15 +08:00
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struct objfile;
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2007-05-12 03:57:17 +08:00
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struct obj_section;
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2002-02-06 09:20:23 +08:00
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struct minimal_symbol;
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2002-07-04 05:27:55 +08:00
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struct regcache;
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2002-11-02 23:13:34 +08:00
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struct reggroup;
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2003-10-11 20:52:30 +08:00
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struct regset;
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2003-09-04 Andrew Cagney <cagney@redhat.com>
* avr-tdep.c: Include "dis-asm.h".
* cris-tdep.c: Include "dis-asm.h".
(cris_delayed_get_disassembler): Use "struct disassemble_info"
instead of corresponding typedef.
* h8300-tdep.c: Include "dis-asm.h".
* ia64-tdep.c: Include "dis-asm.h".
* i386-tdep.c: Include "dis-asm.h".
(i386_print_insn): Use "struct disassemble_info" instead of
corresponding typedef.
* m68k-tdep.c: Include "dis-asm.h".
* mcore-tdep.c: Include "dis-asm.h".
* mips-tdep.c: Include "dis-asm.h".
(gdb_print_insn_mips): Make static, use "struct disassemble_info"
instead of corresponding typedef.
* ns32k-tdep.c: Include "dis-asm.h".
* s390-tdep.c: Include "dis-asm.h".
* sparc-tdep.c: Include "dis-asm.h".
* vax-tdep.c: Include "dis-asm.h".
* v850-tdep.c: Include "dis-asm.h".
* mn10300-tdep.c: Include "dis-asm.h".
* rs6000-tdep.c: Include "dis-asm.h".
* xstormy16-tdep.c: Include "dis-asm.h".
(_initialize_xstormy16_tdep): Delete "extern" declaration of
print_insn_xstormy16.
* Makefile.in (v850-tdep.o): Update dependencies.
(vax-tdep.o, sparc-tdep.o, s390-tdep.o): Ditto.
(ns32k-tdep.o, mips-tdep.o, mcore-tdep.o): Ditto.
(m68k-tdep.o, ia64-tdep.o, i386-tdep.o): Ditto.
(h8300-tdep.o, cris-tdep.o, avr-tdep.o): Ditto.
(mn10300-tdep.o, xstormy16-tdep.o, disasm.o): Ditto.
(gdbarch_h): Remove $(dis_asm_h).
* disasm.c: Include "dis-asm.h".
(dis_asm_read_memory): Use "struct disassemble_info" instead of
corresponding typedef.
(dis_asm_memory_error, dump_insns, do_assembly_only): Ditto.
(gdb_disassemble_info, gdb_disassembly, gdb_print_insn): Ditto.
* gdbarch.sh: Do not include "dis-asm.h".
(struct disassemble_info): Declare opaque.
(TARGET_PRINT_INSN): Update declaration.
* gdbarch.h, gdbarch.c: Re-generate.
2003-09-09 12:41:32 +08:00
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struct disassemble_info;
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2003-10-23 07:54:11 +08:00
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struct target_ops;
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2004-03-16 04:38:08 +08:00
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struct obstack;
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gdb/
* breakpoint.c (deprecated_read_memory_nobpt): Update to use
shadow_len.
(insert_bp_location, reattach_breakpoints, remove_breakpoint)
(delete_breakpoint): Update calls to changed methods.
(deprecated_insert_raw_breakpoint, deprecated_remove_raw_breakpoint)
(single_step_breakpoints, insert_single_step_breakpoint)
(remove_single_step_breakpoints): New.
* breakpoint.h (struct bp_target_info): New.
(struct bp_location): Replace shadow_contents with
target_info and overlay_target_info.
(deprecated_insert_raw_breakpoint, deprecated_remove_raw_breakpoint)
(insert_single_step_breakpoint, remove_single_step_breakpoints): New
prototypes.
* gdbarch.sh: Forward declare struct bp_target_info in gdbarch.h.
(memory_insert_breakpoint, memory_remove_breakpoint): Update second
argument.
* mem-break.c (default_memory_insert_breakpoint): Update. Set
placed_address, placed_size, and shadow_len.
(default_memory_remove_breakpoint): Update. Don't use
BREAKPOINT_FROM_PC.
(memory_insert_breakpoint, memory_remove_breakpoint): Update.
* target.c (update_current_target): Update prototypes for changed
functions.
(debug_to_insert_breakpoint, debug_to_remove_breakpoint)
(debug_to_insert_hw_breakpoint, debug_to_remove_hw_breakpoint):
Update.
* target.h: Forward declare struct bp_target_info.
(struct target_ops): Use a bp_target_info argument for
to_insert_breakpoint, to_remove_breakpoint,
to_insert_hw_breakpoint, and to_remove_hw_breakpoint.
(target_insert_breakpoint, target_remove_breakpoint)
(target_insert_hw_breakpoint, target_remove_hw_breakpoint)
(memory_insert_breakpoint, memory_remove_breakpoint)
(default_memory_insert_breakpoint, default_memory_remove_breakpoint):
Update.
* config/i386/nm-i386.h: Forward declare struct bp_target_info.
(i386_insert_hw_breakpoint, i386_remove_hw_breakpoint): Update.
(target_insert_hw_breakpoint, target_remove_hw_breakpoint): Likewise.
* gdbarch.c, gdbarch.h: Regenerated.
* alpha-tdep.c (alpha_software_single_step): Use
insert_single_step_breakpoint and remove_single_step_breakpoints.
Remove unused statics.
* arm-tdep.c (arm_software_single_step): Likewise. Add a note.
* cris-tdep.c (cris_software_single_step): Likewise.
* mips-tdep.c (mips_software_single_step): Likewise.
* rs6000-tdep.c (rs6000_software_single_step): Likewise.
* sparc-tdep.c (sparc_software_single_step): Likewise.
* wince.c (struct thread_info_struct): Remove step_prev.
(undoSStep): Use remove_single_step_breakpoints.
(wince_software_single_step): Use insert_single_step_breakpoint.
* corelow.c (ignore): Remove unneeded prototype. Update arguments.
* exec.c (ignore): Likewise.
* sol-thread.c (ignore): Likewise.
* procfs.c (dbx_link_shadow_contents): Delete.
(dbx_link_bpt): New.
(procfs_mourn_inferior): Remove it if necessary.
(remove_dbx_link_breakpoint): Use it.
(insert_dbx_link_bpt_in_file): Set it.
(procfs_init_inferior): Don't update dbx_link_bpt_addr.
* rs6000-nat.c (exec_one_dummy_insn): Use
deprecated_insert_raw_breakpoint and
deprecated_remove_raw_breakpoint.
* solib-irix.c (shadow_contents, breakpoint_addr): Delete.
(base_breakpoint): New.
(disable_break): Use it.
(enable_break): Set it.
* i386-nat.c (i386_insert_hw_breakpoint, i386_remove_hw_breakpoint):
Update.
* ia64-tdep.c (ia64_memory_insert_breakpoint)
(ia64_memory_remove_breakpoint): Likewise.
* m32r-tdep.c (m32r_memory_insert_breakpoint)
(m32r_memory_remove_breakpoint): Likewise.
* monitor.c (monitor_insert_breakpoint, monitor_remove_breakpoint):
Likewise. Remove unnecessary prototypes. Use placed_address
and placed_size. Removed useless read from memory.
* nto-procfs.c (procfs_insert_breakpoint)
(procfs_remove_breakpoint, procfs_insert_hw_breakpoint)
(procfs_remove_hw_breakpoint): Update.
* ocd.c (ocd_insert_breakpoint, ocd_remove_breakpoint): Likewise.
* ocd.h (ocd_insert_breakpoint, ocd_remove_breakpoint): Likewise.
* ppc-linux-tdep.c (ppc_linux_memory_remove_breakpoint): Likewise.
* ppc-tdep.h (ppc_linux_memory_remove_breakpoint): Likewise.
* remote-e7000.c (e7000_insert_breakpoint)
(e7000_remove_breakpoint): Likewise.
* remote-m32r-sdi.c (m32r_insert_breakpoint)
(m32r_remove_breakpoint): Likewise.
* remote-mips.c (mips_insert_breakpoint)
(mips_remove_breakpoint): Likewise.
* remote-rdp.c (remote_rdp_insert_breakpoint)
(remote_rdp_remove_breakpoint): Likewise.
(rdp_step): Use deprecated_insert_raw_breakpoint and
deprecated_remove_raw_breakpoint.
* remote-sds.c (sds_insert_breakpoint, sds_remove_breakpoint):
Update.
* remote-sim.c (gdbsim_insert_breakpoint, gdbsim_remove_breakpoint):
Delete.
(init_gdbsim_ops): Use memory_insert_breakpoint and
memory_remove_breakpoint.
* remote-st.c (st2000_insert_breakpoint)
(st2000_remove_breakpoint): Update. Remove unused
BREAKPOINT_FROM_PC.
* remote.c (remote_insert_breakpoint, remote_remove_breakpoint):
Update. Use placed_address and placed_size.
(remote_insert_hw_breakpoint, remote_remove_hw_breakpoint): Likewise.
gdb/doc/
* gdbint.texinfo (x86 Watchpoints, Target Conditionals): Update insert
and remove breakpoint prototypes.
(Watchpoints): Move description of target_insert_hw_breakpoint and
target_remove_hw_breakpoint ...
(Breakpoints): ... to here. Document target_insert_breakpoint and
target_remove_breakpoint.
2006-04-19 03:20:08 +08:00
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struct bp_target_info;
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2006-11-29 06:10:26 +08:00
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struct target_desc;
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MIPS: Keep the ISA bit in compressed code addresses
1. Background information
The MIPS architecture, as originally designed and implemented in
mid-1980s has a uniform instruction word size that is 4 bytes, naturally
aligned. As such all MIPS instructions are located at addresses that
have their bits #1 and #0 set to zeroes, and any attempt to execute an
instruction from an address that has any of the two bits set to one
causes an address error exception. This may for example happen when a
jump-register instruction is executed whose register value used as the
jump target has any of these bits set.
Then in mid 1990s LSI sought a way to improve code density for their
TinyRISC family of MIPS cores and invented an alternatively encoded
instruction set in a joint effort with MIPS Technologies (then a
subsidiary of SGI). The new instruction set has been named the MIPS16
ASE (Application-Specific Extension) and uses a variable instruction
word size, which is 2 bytes (as the name of the ASE suggests) for most,
but there are a couple of exceptions that take 4 bytes, and then most of
the 2-byte instructions can be treated with a 2-byte extension prefix to
expand the range of the immediate operands used.
As a result instructions are no longer 4-byte aligned, instead they are
aligned to a multiple of 2. That left the bit #0 still unused for code
references, be it for the standard MIPS (i.e. as originally invented) or
for the MIPS16 instruction set, and based on that observation a clever
trick was invented that on one hand allowed the processor to be
seamlessly switched between the two instruction sets at any time at the
run time while on the other avoided the introduction of any special
control register to do that.
So it is the bit #0 of the instruction address that was chosen as the
selector and named the ISA bit. Any instruction executed at an even
address is interpreted as a standard MIPS instruction (the address still
has to have its bit #1 clear), any instruction executed at an odd
address is interpreted as a MIPS16 instruction.
To switch between modes ordinary jump instructions are used, such as
used for function calls and returns, specifically the bit #0 of the
source register used in jump-register instructions selects the execution
(ISA) mode for the following piece of code to be interpreted in.
Additionally new jump-immediate instructions were added that flipped the
ISA bit to select the opposite mode upon execution. They were
considered necessary to avoid the need to make register jumps in all
cases as the original jump-immediate instructions provided no way to
change the bit #0 at all.
This was all important for cases where standard MIPS and MIPS16 code had
to be mixed, either for compatibility with the existing binary code base
or to access resources not reachable from MIPS16 code (the MIPS16
instruction set only provides access to general-purpose registers, and
not for example floating-point unit registers or privileged coprocessor
0 registers) -- pieces of code in the opposite mode can be executed as
ordinary subroutine calls.
A similar approach has been more recently adopted for the MIPS16
replacement instruction set defined as the so called microMIPS ASE.
This is another instruction set encoding introduced to the MIPS
architecture. Just like the MIPS16 ASE, the microMIPS instruction set
uses a variable-length encoding, where each instruction takes a multiple
of 2 bytes. The ISA bit has been reused and for microMIPS-capable
processors selects between the standard MIPS and the microMIPS mode
instead.
2. Statement of the problem
To put it shortly, MIPS16 and microMIPS code pointers used by GDB are
different to these observed at the run time. This results in the same
expressions being evaluated producing different results in GDB and in
the program being debugged. Obviously it's the results obtained at the
run time that are correct (they define how the program behaves) and
therefore by definition the results obtained in GDB are incorrect.
A bit longer description will record that obviously at the run time the
ISA bit has to be set correctly (refer to background information above
if unsure why so) or the program will not run as expected. This is
recorded in all the executable file structures used at the run time: the
dynamic symbol table (but not always the static one!), the GOT, and
obviously in all the addresses embedded in code or data of the program
itself, calculated by applying the appropriate relocations at the static
link time.
While a program is being processed by GDB, the ISA bit is stripped off
from any code addresses, presumably to make them the same as the
respective raw memory byte address used by the processor to access the
instruction in the instruction fetch access cycle. This stripping is
actually performed outside GDB proper, in BFD, specifically
_bfd_mips_elf_symbol_processing (elfxx-mips.c, see the piece of code at
the very bottom of that function, starting with an: "If this is an
odd-valued function symbol, assume it's a MIPS16 or microMIPS one."
comment).
This function is also responsible for symbol table dumps made by
`objdump' too, so you'll never see the ISA bit reported there by that
tool, you need to use `readelf'.
This is however unlike what is ever done at the run time, the ISA bit
once present is never stripped off, for example a cast like this:
(short *) main
will not strip the ISA bit off and if the resulting pointer is intended
to be used to access instructions as data, for example for software
instruction decoding (like for fault recovery or emulation in a signal
handler) or for self-modifying code then the bit still has to be
stripped off by an explicit AND operation.
This is probably best illustrated with a simple real program example.
Let's consider the following simple program:
$ cat foobar.c
int __attribute__ ((mips16)) foo (void)
{
return 1;
}
int __attribute__ ((mips16)) bar (void)
{
return 2;
}
int __attribute__ ((nomips16)) foo32 (void)
{
return 3;
}
int (*foo32p) (void) = foo32;
int (*foop) (void) = foo;
int fooi = (int) foo;
int
main (void)
{
return foop ();
}
$
This is plain C with no odd tricks, except from the instruction mode
attributes. They are not necessary to trigger this problem, I just put
them here so that the program can be contained in a single source file
and to make it obvious which function is MIPS16 code and which is not.
Let's try it with Linux, so that everyone can repeat this experiment:
$ mips-linux-gnu-gcc -mips16 -g -O2 -o foobar foobar.c
$
Let's have a look at some interesting symbols:
$ mips-linux-gnu-readelf -s foobar | egrep 'table|foo|bar'
Symbol table '.dynsym' contains 7 entries:
Symbol table '.symtab' contains 95 entries:
55: 00000000 0 FILE LOCAL DEFAULT ABS foobar.c
66: 0040068c 4 FUNC GLOBAL DEFAULT [MIPS16] 12 bar
68: 00410848 4 OBJECT GLOBAL DEFAULT 21 foo32p
70: 00410844 4 OBJECT GLOBAL DEFAULT 21 foop
78: 00400684 8 FUNC GLOBAL DEFAULT 12 foo32
80: 00400680 4 FUNC GLOBAL DEFAULT [MIPS16] 12 foo
88: 00410840 4 OBJECT GLOBAL DEFAULT 21 fooi
$
Hmm, no sight of the ISA bit, but notice how foo and bar (but not
foo32!) have been marked as MIPS16 functions (ELF symbol structure's
`st_other' field is used for that).
So let's try to run and poke at this program with GDB. I'll be using a
native system for simplicity (I'll be using ellipses here and there to
remove unrelated clutter):
$ ./foobar
$ echo $?
1
$
So far, so good.
$ gdb ./foobar
[...]
(gdb) break main
Breakpoint 1 at 0x400490: file foobar.c, line 23.
(gdb) run
Starting program: .../foobar
Breakpoint 1, main () at foobar.c:23
23 return foop ();
(gdb)
Yay, it worked! OK, so let's poke at it:
(gdb) print main
$1 = {int (void)} 0x400490 <main>
(gdb) print foo32
$2 = {int (void)} 0x400684 <foo32>
(gdb) print foo32p
$3 = (int (*)(void)) 0x400684 <foo32>
(gdb) print bar
$4 = {int (void)} 0x40068c <bar>
(gdb) print foo
$5 = {int (void)} 0x400680 <foo>
(gdb) print foop
$6 = (int (*)(void)) 0x400681 <foo>
(gdb)
A-ha! Here's the difference and finally the ISA bit!
(gdb) print /x fooi
$7 = 0x400681
(gdb) p/x $pc
p/x $pc
$8 = 0x400491
(gdb)
And here as well...
(gdb) advance foo
foo () at foobar.c:4
4 }
(gdb) disassemble
Dump of assembler code for function foo:
0x00400680 <+0>: jr ra
0x00400682 <+2>: li v0,1
End of assembler dump.
(gdb) finish
Run till exit from #0 foo () at foobar.c:4
main () at foobar.c:24
24 }
Value returned is $9 = 1
(gdb) continue
Continuing.
[Inferior 1 (process 14103) exited with code 01]
(gdb)
So let's be a bit inquisitive...
(gdb) run
Starting program: .../foobar
Breakpoint 1, main () at foobar.c:23
23 return foop ();
(gdb)
Actually we do not like to run foo here at all. Let's run bar instead!
(gdb) set foop = bar
(gdb) print foop
$10 = (int (*)(void)) 0x40068c <bar>
(gdb)
Hmm, no ISA bit. Is it going to work?
(gdb) advance bar
bar () at foobar.c:9
9 }
(gdb) p/x $pc
$11 = 0x40068c
(gdb) disassemble
Dump of assembler code for function bar:
=> 0x0040068c <+0>: jr ra
0x0040068e <+2>: li v0,2
End of assembler dump.
(gdb) finish
Run till exit from #0 bar () at foobar.c:9
Program received signal SIGILL, Illegal instruction.
bar () at foobar.c:9
9 }
(gdb)
Oops!
(gdb) p/x $pc
$12 = 0x40068c
(gdb)
We're still there!
(gdb) continue
Continuing.
Program terminated with signal SIGILL, Illegal instruction.
The program no longer exists.
(gdb)
So let's try something else:
(gdb) run
Starting program: .../foobar
Breakpoint 1, main () at foobar.c:23
23 return foop ();
(gdb) set foop = foo
(gdb) advance foo
foo () at foobar.c:4
4 }
(gdb) disassemble
Dump of assembler code for function foo:
=> 0x00400680 <+0>: jr ra
0x00400682 <+2>: li v0,1
End of assembler dump.
(gdb) finish
Run till exit from #0 foo () at foobar.c:4
Program received signal SIGILL, Illegal instruction.
foo () at foobar.c:4
4 }
(gdb) continue
Continuing.
Program terminated with signal SIGILL, Illegal instruction.
The program no longer exists.
(gdb)
The same problem!
(gdb) run
Starting program:
/net/build2-lucid-cs/scratch/macro/mips-linux-fsf-gcc/isa-bit/foobar
Breakpoint 1, main () at foobar.c:23
23 return foop ();
(gdb) set foop = foo32
(gdb) advance foo32
foo32 () at foobar.c:14
14 }
(gdb) disassemble
Dump of assembler code for function foo32:
=> 0x00400684 <+0>: jr ra
0x00400688 <+4>: li v0,3
End of assembler dump.
(gdb) finish
Run till exit from #0 foo32 () at foobar.c:14
main () at foobar.c:24
24 }
Value returned is $14 = 3
(gdb) continue
Continuing.
[Inferior 1 (process 14113) exited with code 03]
(gdb)
That did work though, so it's the ISA bit only!
(gdb) quit
Enough!
That's the tip of the iceberg only though. So let's rebuild the
executable with some dynamic symbols:
$ mips-linux-gnu-gcc -mips16 -Wl,--export-dynamic -g -O2 -o foobar-dyn foobar.c
$ mips-linux-gnu-readelf -s foobar-dyn | egrep 'table|foo|bar'
Symbol table '.dynsym' contains 32 entries:
6: 004009cd 4 FUNC GLOBAL DEFAULT 12 bar
8: 00410b88 4 OBJECT GLOBAL DEFAULT 21 foo32p
9: 00410b84 4 OBJECT GLOBAL DEFAULT 21 foop
15: 004009c4 8 FUNC GLOBAL DEFAULT 12 foo32
17: 004009c1 4 FUNC GLOBAL DEFAULT 12 foo
25: 00410b80 4 OBJECT GLOBAL DEFAULT 21 fooi
Symbol table '.symtab' contains 95 entries:
55: 00000000 0 FILE LOCAL DEFAULT ABS foobar.c
69: 004009cd 4 FUNC GLOBAL DEFAULT 12 bar
71: 00410b88 4 OBJECT GLOBAL DEFAULT 21 foo32p
72: 00410b84 4 OBJECT GLOBAL DEFAULT 21 foop
79: 004009c4 8 FUNC GLOBAL DEFAULT 12 foo32
81: 004009c1 4 FUNC GLOBAL DEFAULT 12 foo
89: 00410b80 4 OBJECT GLOBAL DEFAULT 21 fooi
$
OK, now the ISA bit is there for a change, but the MIPS16 `st_other'
attribute gone, hmm... What does `objdump' do then:
$ mips-linux-gnu-objdump -Tt foobar-dyn | egrep 'SYMBOL|foo|bar'
foobar-dyn: file format elf32-tradbigmips
SYMBOL TABLE:
00000000 l df *ABS* 00000000 foobar.c
004009cc g F .text 00000004 0xf0 bar
00410b88 g O .data 00000004 foo32p
00410b84 g O .data 00000004 foop
004009c4 g F .text 00000008 foo32
004009c0 g F .text 00000004 0xf0 foo
00410b80 g O .data 00000004 fooi
DYNAMIC SYMBOL TABLE:
004009cc g DF .text 00000004 Base 0xf0 bar
00410b88 g DO .data 00000004 Base foo32p
00410b84 g DO .data 00000004 Base foop
004009c4 g DF .text 00000008 Base foo32
004009c0 g DF .text 00000004 Base 0xf0 foo
00410b80 g DO .data 00000004 Base fooi
$
Hmm, the attribute (0xf0, printed raw) is back, and the ISA bit gone
again.
Let's have a look at some DWARF-2 records GDB uses (I'll be stripping
off a lot here for brevity) -- debug info:
$ mips-linux-gnu-readelf -wi foobar
Contents of the .debug_info section:
[...]
Compilation Unit @ offset 0x88:
Length: 0xbb (32-bit)
Version: 4
Abbrev Offset: 62
Pointer Size: 4
<0><93>: Abbrev Number: 1 (DW_TAG_compile_unit)
<94> DW_AT_producer : (indirect string, offset: 0x19e): GNU C 4.8.0 20120513 (experimental) -meb -mips16 -march=mips32r2 -mhard-float -mllsc -mplt -mno-synci -mno-shared -mabi=32 -g -O2
<98> DW_AT_language : 1 (ANSI C)
<99> DW_AT_name : (indirect string, offset: 0x190): foobar.c
<9d> DW_AT_comp_dir : (indirect string, offset: 0x225): [...]
<a1> DW_AT_ranges : 0x0
<a5> DW_AT_low_pc : 0x0
<a9> DW_AT_stmt_list : 0x27
<1><ad>: Abbrev Number: 2 (DW_TAG_subprogram)
<ae> DW_AT_external : 1
<ae> DW_AT_name : foo
<b2> DW_AT_decl_file : 1
<b3> DW_AT_decl_line : 1
<b4> DW_AT_prototyped : 1
<b4> DW_AT_type : <0xc2>
<b8> DW_AT_low_pc : 0x400680
<bc> DW_AT_high_pc : 0x400684
<c0> DW_AT_frame_base : 1 byte block: 9c (DW_OP_call_frame_cfa)
<c2> DW_AT_GNU_all_call_sites: 1
<1><c2>: Abbrev Number: 3 (DW_TAG_base_type)
<c3> DW_AT_byte_size : 4
<c4> DW_AT_encoding : 5 (signed)
<c5> DW_AT_name : int
<1><c9>: Abbrev Number: 4 (DW_TAG_subprogram)
<ca> DW_AT_external : 1
<ca> DW_AT_name : (indirect string, offset: 0x18a): foo32
<ce> DW_AT_decl_file : 1
<cf> DW_AT_decl_line : 11
<d0> DW_AT_prototyped : 1
<d0> DW_AT_type : <0xc2>
<d4> DW_AT_low_pc : 0x400684
<d8> DW_AT_high_pc : 0x40068c
<dc> DW_AT_frame_base : 1 byte block: 9c (DW_OP_call_frame_cfa)
<de> DW_AT_GNU_all_call_sites: 1
<1><de>: Abbrev Number: 2 (DW_TAG_subprogram)
<df> DW_AT_external : 1
<df> DW_AT_name : bar
<e3> DW_AT_decl_file : 1
<e4> DW_AT_decl_line : 6
<e5> DW_AT_prototyped : 1
<e5> DW_AT_type : <0xc2>
<e9> DW_AT_low_pc : 0x40068c
<ed> DW_AT_high_pc : 0x400690
<f1> DW_AT_frame_base : 1 byte block: 9c (DW_OP_call_frame_cfa)
<f3> DW_AT_GNU_all_call_sites: 1
<1><f3>: Abbrev Number: 5 (DW_TAG_subprogram)
<f4> DW_AT_external : 1
<f4> DW_AT_name : (indirect string, offset: 0x199): main
<f8> DW_AT_decl_file : 1
<f9> DW_AT_decl_line : 21
<fa> DW_AT_prototyped : 1
<fa> DW_AT_type : <0xc2>
<fe> DW_AT_low_pc : 0x400490
<102> DW_AT_high_pc : 0x4004a4
<106> DW_AT_frame_base : 1 byte block: 9c (DW_OP_call_frame_cfa)
<108> DW_AT_GNU_all_tail_call_sites: 1
[...]
$
-- no sign of the ISA bit anywhere -- frame info:
$ mips-linux-gnu-readelf -wf foobar
[...]
Contents of the .debug_frame section:
00000000 0000000c ffffffff CIE
Version: 1
Augmentation: ""
Code alignment factor: 1
Data alignment factor: -4
Return address column: 31
DW_CFA_def_cfa_register: r29
DW_CFA_nop
00000010 0000000c 00000000 FDE cie=00000000 pc=00400680..00400684
00000020 0000000c 00000000 FDE cie=00000000 pc=00400684..0040068c
00000030 0000000c 00000000 FDE cie=00000000 pc=0040068c..00400690
00000040 00000018 00000000 FDE cie=00000000 pc=00400490..004004a4
DW_CFA_advance_loc: 6 to 00400496
DW_CFA_def_cfa_offset: 32
DW_CFA_offset: r31 at cfa-4
DW_CFA_advance_loc: 6 to 0040049c
DW_CFA_restore: r31
DW_CFA_def_cfa_offset: 0
DW_CFA_nop
DW_CFA_nop
DW_CFA_nop
[...]
$
-- no sign of the ISA bit anywhere -- range info (GDB doesn't use arange):
$ mips-linux-gnu-readelf -wR foobar
Contents of the .debug_ranges section:
Offset Begin End
00000000 00400680 00400690
00000000 00400490 004004a4
00000000 <End of list>
$
-- no sign of the ISA bit anywhere -- line info:
$ mips-linux-gnu-readelf -wl foobar
Raw dump of debug contents of section .debug_line:
[...]
Offset: 0x27
Length: 78
DWARF Version: 2
Prologue Length: 31
Minimum Instruction Length: 1
Initial value of 'is_stmt': 1
Line Base: -5
Line Range: 14
Opcode Base: 13
Opcodes:
Opcode 1 has 0 args
Opcode 2 has 1 args
Opcode 3 has 1 args
Opcode 4 has 1 args
Opcode 5 has 1 args
Opcode 6 has 0 args
Opcode 7 has 0 args
Opcode 8 has 0 args
Opcode 9 has 1 args
Opcode 10 has 0 args
Opcode 11 has 0 args
Opcode 12 has 1 args
The Directory Table is empty.
The File Name Table:
Entry Dir Time Size Name
1 0 0 0 foobar.c
Line Number Statements:
Extended opcode 2: set Address to 0x400681
Special opcode 6: advance Address by 0 to 0x400681 and Line by 1 to 2
Special opcode 7: advance Address by 0 to 0x400681 and Line by 2 to 4
Special opcode 55: advance Address by 3 to 0x400684 and Line by 8 to 12
Special opcode 7: advance Address by 0 to 0x400684 and Line by 2 to 14
Advance Line by -7 to 7
Special opcode 131: advance Address by 9 to 0x40068d and Line by 0 to 7
Special opcode 7: advance Address by 0 to 0x40068d and Line by 2 to 9
Advance PC by 3 to 0x400690
Extended opcode 1: End of Sequence
Extended opcode 2: set Address to 0x400491
Advance Line by 21 to 22
Copy
Special opcode 6: advance Address by 0 to 0x400491 and Line by 1 to 23
Special opcode 60: advance Address by 4 to 0x400495 and Line by -1 to 22
Special opcode 34: advance Address by 2 to 0x400497 and Line by 1 to 23
Special opcode 62: advance Address by 4 to 0x40049b and Line by 1 to 24
Special opcode 32: advance Address by 2 to 0x40049d and Line by -1 to 23
Special opcode 6: advance Address by 0 to 0x40049d and Line by 1 to 24
Advance PC by 7 to 0x4004a4
Extended opcode 1: End of Sequence
[...]
-- a-ha, the ISA bit is there! However it's not always right for some
reason, I don't have a small test case to show it, but here's an excerpt
from MIPS16 libc, a prologue of a function:
00019630 <__libc_init_first>:
19630: e8a0 jrc ra
19632: 6500 nop
00019634 <_init>:
19634: f000 6a11 li v0,17
19638: f7d8 0b08 la v1,15e00 <_DYNAMIC+0x15c54>
1963c: f400 3240 sll v0,16
19640: e269 addu v0,v1
19642: 659a move gp,v0
19644: 64f6 save 48,ra,s0-s1
19646: 671c move s0,gp
19648: d204 sw v0,16(sp)
1964a: f352 984c lw v0,-27828(s0)
1964e: 6724 move s1,a0
and the corresponding DWARF-2 line info:
Line Number Statements:
Extended opcode 2: set Address to 0x19631
Advance Line by 44 to 45
Copy
Special opcode 8: advance Address by 0 to 0x19631 and Line by 3 to 48
Special opcode 66: advance Address by 4 to 0x19635 and Line by 5 to 53
Advance PC by constant 17 to 0x19646
Special opcode 25: advance Address by 1 to 0x19647 and Line by 6 to 59
Advance Line by -6 to 53
Special opcode 33: advance Address by 2 to 0x19649 and Line by 0 to 53
Special opcode 39: advance Address by 2 to 0x1964b and Line by 6 to 59
Advance Line by -6 to 53
Special opcode 61: advance Address by 4 to 0x1964f and Line by 0 to 53
-- see that "Advance PC by constant 17" there? It clears the ISA bit,
however code at 0x19646 is not standard MIPS code at all. For some
reason the constant is always 17, I've never seen DW_LNS_const_add_pc
used with any other value -- is that a binutils bug or what?
3. Solution:
I think we should retain the value of the ISA bit in code references,
that is effectively treat them as cookies as they indeed are (although
trivially calculated) rather than raw memory byte addresses.
In a perfect world both the static symbol table and the respective
DWARF-2 records should be fixed to include the ISA bit in all the cases.
I think however that this is infeasible.
All the uses of `_bfd_mips_elf_symbol_processing' can not necessarily be
tracked down. This function is used by `elf_slurp_symbol_table' that in
turn is used by `bfd_canonicalize_symtab' and
`bfd_canonicalize_dynamic_symtab', which are public interfaces.
Similarly DWARF-2 records are used outside GDB, one notable if a bit
questionable is the exception unwinder (libgcc/unwind-dw2.c) -- I have
identified at least bits in `execute_cfa_program' and
`uw_frame_state_for', both around the calls to `_Unwind_IsSignalFrame',
that would need an update as they effectively flip the ISA bit freely;
see also the comment about MASK_RETURN_ADDR in gcc/config/mips/mips.h.
But there may be more places. Any change in how DWARF-2 records are
produced would require an update there and would cause compatibility
problems with libgcc.a binaries already distributed; given that this is
a static library a complex change involving function renames would
likely be required.
I propose therefore to accept the existing inconsistencies and deal with
them entirely within GDB. I have figured out that the ISA bit lost in
various places can still be recovered as long as we have symbol
information -- that'll have the `st_other' attribute correctly set to
one of standard MIPS/MIPS16/microMIPS encoding.
Here's the resulting change. It adds a couple of new `gdbarch' hooks,
one to update symbol information with the ISA bit lost in
`_bfd_mips_elf_symbol_processing', and two other ones to adjust DWARF-2
records as they're processed. The ISA bit is set in each address
handled according to information retrieved from the symbol table for the
symbol spanning the address if any; limits are adjusted based on the
address they point to related to the respective base address.
Additionally minimal symbol information has to be adjusted accordingly
in its gdbarch hook.
With these changes in place some complications with ISA bit juggling in
the PC that never fully worked can be removed from the MIPS backend.
Conversely, the generic dynamic linker event special breakpoint symbol
handler has to be updated to call the minimal symbol gdbarch hook to
record that the symbol is a MIPS16 or microMIPS address if applicable or
the breakpoint will be set at the wrong address and either fail to work
or cause SIGTRAPs (this is because the symbol is handled early on and
bypasses regular symbol processing).
4. Results obtained
The change fixes the example above -- to repeat only the crucial steps:
(gdb) break main
Breakpoint 1 at 0x400491: file foobar.c, line 23.
(gdb) run
Starting program: .../foobar
Breakpoint 1, main () at foobar.c:23
23 return foop ();
(gdb) print foo
$1 = {int (void)} 0x400681 <foo>
(gdb) set foop = bar
(gdb) advance bar
bar () at foobar.c:9
9 }
(gdb) disassemble
Dump of assembler code for function bar:
=> 0x0040068d <+0>: jr ra
0x0040068f <+2>: li v0,2
End of assembler dump.
(gdb) finish
Run till exit from #0 bar () at foobar.c:9
main () at foobar.c:24
24 }
Value returned is $2 = 2
(gdb) continue
Continuing.
[Inferior 1 (process 14128) exited with code 02]
(gdb)
-- excellent!
The change removes about 90 failures per MIPS16 multilib in mips-sde-elf
testing too, results for MIPS16 are now similar to that for standard
MIPS; microMIPS results are a bit worse because of host-I/O problems in
QEMU used instead of MIPSsim for microMIPS testing only:
=== gdb Summary ===
# of expected passes 14299
# of unexpected failures 187
# of expected failures 56
# of known failures 58
# of unresolved testcases 11
# of untested testcases 52
# of unsupported tests 174
MIPS16:
=== gdb Summary ===
# of expected passes 14298
# of unexpected failures 187
# of unexpected successes 2
# of expected failures 54
# of known failures 58
# of unresolved testcases 12
# of untested testcases 52
# of unsupported tests 174
microMIPS:
=== gdb Summary ===
# of expected passes 14149
# of unexpected failures 201
# of unexpected successes 2
# of expected failures 54
# of known failures 58
# of unresolved testcases 7
# of untested testcases 53
# of unsupported tests 175
2014-12-12 Maciej W. Rozycki <macro@codesourcery.com>
Maciej W. Rozycki <macro@mips.com>
Pedro Alves <pedro@codesourcery.com>
gdb/
* gdbarch.sh (elf_make_msymbol_special): Change type to `F',
remove `predefault' and `invalid_p' initializers.
(make_symbol_special): New architecture method.
(adjust_dwarf2_addr, adjust_dwarf2_line): Likewise.
(objfile, symbol): New declarations.
* arch-utils.h (default_elf_make_msymbol_special): Remove
prototype.
(default_make_symbol_special): New prototype.
(default_adjust_dwarf2_addr): Likewise.
(default_adjust_dwarf2_line): Likewise.
* mips-tdep.h (mips_unmake_compact_addr): New prototype.
* arch-utils.c (default_elf_make_msymbol_special): Remove
function.
(default_make_symbol_special): New function.
(default_adjust_dwarf2_addr): Likewise.
(default_adjust_dwarf2_line): Likewise.
* dwarf2-frame.c (decode_frame_entry_1): Call
`gdbarch_adjust_dwarf2_addr'.
* dwarf2loc.c (dwarf2_find_location_expression): Likewise.
* dwarf2read.c (create_addrmap_from_index): Likewise.
(process_psymtab_comp_unit_reader): Likewise.
(add_partial_symbol): Likewise.
(add_partial_subprogram): Likewise.
(process_full_comp_unit): Likewise.
(read_file_scope): Likewise.
(read_func_scope): Likewise. Call `gdbarch_make_symbol_special'.
(read_lexical_block_scope): Call `gdbarch_adjust_dwarf2_addr'.
(read_call_site_scope): Likewise.
(dwarf2_ranges_read): Likewise.
(dwarf2_record_block_ranges): Likewise.
(read_attribute_value): Likewise.
(dwarf_decode_lines_1): Call `gdbarch_adjust_dwarf2_line'.
(new_symbol_full): Call `gdbarch_adjust_dwarf2_addr'.
* elfread.c (elf_symtab_read): Don't call
`gdbarch_elf_make_msymbol_special' if unset.
* mips-linux-tdep.c (micromips_linux_sigframe_validate): Strip
the ISA bit from the PC.
* mips-tdep.c (mips_unmake_compact_addr): New function.
(mips_elf_make_msymbol_special): Set the ISA bit in the symbol's
address appropriately.
(mips_make_symbol_special): New function.
(mips_pc_is_mips): Set the ISA bit before symbol lookup.
(mips_pc_is_mips16): Likewise.
(mips_pc_is_micromips): Likewise.
(mips_pc_isa): Likewise.
(mips_adjust_dwarf2_addr): New function.
(mips_adjust_dwarf2_line): Likewise.
(mips_read_pc, mips_unwind_pc): Keep the ISA bit.
(mips_addr_bits_remove): Likewise.
(mips_skip_trampoline_code): Likewise.
(mips_write_pc): Don't set the ISA bit.
(mips_eabi_push_dummy_call): Likewise.
(mips_o64_push_dummy_call): Likewise.
(mips_gdbarch_init): Install `mips_make_symbol_special',
`mips_adjust_dwarf2_addr' and `mips_adjust_dwarf2_line' gdbarch
handlers.
* solib.c (gdb_bfd_lookup_symbol_from_symtab): Get
target-specific symbol address adjustments.
* gdbarch.h: Regenerate.
* gdbarch.c: Regenerate.
2014-12-12 Maciej W. Rozycki <macro@codesourcery.com>
gdb/testsuite/
* gdb.base/func-ptrs.c: New file.
* gdb.base/func-ptrs.exp: New file.
2014-12-12 21:31:53 +08:00
|
|
|
struct objfile;
|
|
|
|
|
struct symbol;
|
Implement displaced stepping.
gdb/
* gdbarch.sh (max_insn_length): New 'variable'.
(displaced_step_copy, displaced_step_fixup)
(displaced_step_free_closure, displaced_step_location): New
functions.
(struct displaced_step_closure): Add forward declaration.
* gdbarch.c, gdbarch.h: Regenerated.
* arch-utils.c: #include "objfiles.h".
(simple_displaced_step_copy_insn)
(simple_displaced_step_free_closure)
(displaced_step_at_entry_point): New functions.
* arch-utils.h (simple_displaced_step_copy_insn)
(simple_displaced_step_free_closure)
(displaced_step_at_entry_point): New prototypes.
* i386-tdep.c (I386_MAX_INSN_LEN): Rename to...
(I386_MAX_MATCHED_INSN_LEN): ... this.
(i386_absolute_jmp_p, i386_absolute_call_p)
(i386_ret_p, i386_call_p, i386_breakpoint_p, i386_syscall_p)
(i386_displaced_step_fixup): New functions.
(struct i386_insn, i386_match_insn): Update.
(i386_gdbarch_init): Set gdbarch_max_insn_length.
* i386-tdep.h (I386_MAX_INSN_LEN): New.
(i386_displaced_step_fixup): New prototype.
* i386-linux-tdep.c (i386_linux_init_abi): Include "arch-utils.h".
Register gdbarch_displaced_step_copy,
gdbarch_displaced_step_fixup, gdbarch_displaced_step_free_closure,
and gdbarch_displaced_step_location functions.
* infrun.c (debug_displaced): New variable.
(show_debug_displaced): New function.
(struct displaced_step_request): New struct.
(displaced_step_request_queue, displaced_step_ptid)
(displaced_step_gdbarch, displaced_step_closure)
(displaced_step_original, displaced_step_copy)
(displaced_step_saved_copy, can_use_displaced_stepping): New
variables.
(show_can_use_displaced_stepping, use_displaced_stepping)
(displaced_step_clear, cleanup_displaced_step_closure)
(displaced_step_dump_bytes, displaced_step_prepare)
(displaced_step_clear_cleanup, write_memory_ptid)
(displaced_step_fixup): New functions.
(resume): Call displaced_step_prepare.
(proceed): Call read_pc once, and remember the value. If using
displaced stepping, don't remove breakpoints.
(handle_inferior_event): Call displaced_step_fixup. Add some
debugging output. When we try to step over a breakpoint, but get
a signal to deliver to the thread instead, ensure the step-resume
breakpoint is actually inserted. If a thread hop is needed, and
displaced stepping is enabled, don't remove breakpoints.
(init_wait_for_inferior): Call displaced_step_clear.
(_initialize_infrun): Add "set debug displaced" command. Add
"maint set can-use-displaced-stepping" command. Clear
displaced_step_ptid.
* inferior.h (debug_displaced): Declare variable.
(displaced_step_dump_bytes): Declare function.
* Makefile.in (arch-utils.o, i386-linux-tdep.o): Update
dependencies.
gdb/testsuite/
* gdb.asm/asmsrc1.s: Add scratch space.
gdb/doc/
* gdb.texinfo (Debugging Output): Document "set/show debug
displaced".
(Maintenance Commands): Document "maint set/show
can-use-displaced-stepping".
2008-05-03 00:49:54 +08:00
|
|
|
struct displaced_step_closure;
|
2009-09-15 11:30:08 +08:00
|
|
|
struct syscall;
|
2010-12-29 00:00:13 +08:00
|
|
|
struct agent_expr;
|
2011-09-27 21:09:37 +08:00
|
|
|
struct axs_value;
|
2012-04-28 04:47:57 +08:00
|
|
|
struct stap_parse_info;
|
2015-02-17 22:54:44 +08:00
|
|
|
struct parser_state;
|
2012-12-15 22:27:56 +08:00
|
|
|
struct ravenscar_arch_ops;
|
2013-02-05 02:40:41 +08:00
|
|
|
struct elf_internal_linux_prpsinfo;
|
2014-10-10 22:57:13 +08:00
|
|
|
struct mem_range;
|
Partial fix for PR breakpoints/10737: Make syscall info be per-arch instead of global
This patch intends to partially fix PR breakpoints/10737, which is
about making the syscall information (for the "catch syscall" command)
be per-arch, instead of global. This is not a full fix because of the
other issues pointed by Pedro here:
<https://sourceware.org/bugzilla/show_bug.cgi?id=10737#c5>
However, I consider it a good step towards the real fix. It will also
help me fix <https://sourceware.org/bugzilla/show_bug.cgi?id=17402>.
What this patch does, basically, is move the "syscalls_info"
struct to gdbarch. Currently, the syscall information is stored in a
global variable inside gdb/xml-syscall.c, which means that there is no
easy way to correlate this info with the current target or
architecture being used, for example. This causes strange behaviors,
because the syscall info is not re-read when the arch changes. For
example, if you put a syscall catchpoint in syscall 5 on i386 (syscall
open), and then load a x86_64 program on GDB and put the same syscall
5 there (fstat on x86_64), you will still see that GDB tells you that
it is catching "open", even though it is not. With this patch, GDB
correctly says that it will be catching fstat syscalls.
(gdb) set architecture i386
The target architecture is assumed to be i386
(gdb) catch syscall 5
Catchpoint 1 (syscall 'open' [5])
(gdb) set architecture i386:x86-64
The target architecture is assumed to be i386:x86-64
(gdb) catch syscall 5
Catchpoint 2 (syscall 'open' [5])
But with the patch:
(gdb) set architecture i386
The target architecture is assumed to be i386
(gdb) catch syscall 5
Catchpoint 1 (syscall 'open' [5])
(gdb) set architecture i386:x86-64
The target architecture is assumed to be i386:x86-64
(gdb) catch syscall 5
Catchpoint 2 (syscall 'fstat' [5])
As I said, there are still some problems on the "catch syscall"
mechanism, because (for example) the user should be able to "catch
syscall open" on i386, and then expect "open" to be caught also on
x86_64. Currently, it doesn't work. I intend to work on this later.
gdb/
2014-11-20 Sergio Durigan Junior <sergiodj@redhat.com>
PR breakpoints/10737
* amd64-linux-tdep.c (amd64_linux_init_abi_common): Adjust call to
set_xml_syscall_file_name to provide gdbarch.
* arm-linux-tdep.c (arm_linux_init_abi): Likewise.
* bfin-linux-tdep.c (bfin_linux_init_abi): Likewise.
* breakpoint.c (print_it_catch_syscall): Adjust call to
get_syscall_by_number to provide gdbarch.
(print_one_catch_syscall): Likewise.
(print_mention_catch_syscall): Likewise.
(print_recreate_catch_syscall): Likewise.
(catch_syscall_split_args): Adjust calls to get_syscall_by_number
and get_syscall_by_name to provide gdbarch.
(catch_syscall_completer): Adjust call to get_syscall_names to
provide gdbarch.
* gdbarch.c: Regenerate.
* gdbarch.h: Likewise.
* gdbarch.sh: Forward declare "struct syscalls_info".
(xml_syscall_file): New variable.
(syscalls_info): Likewise.
* i386-linux-tdep.c (i386_linux_init_abi): Adjust call to
set_xml_syscall_file_name to provide gdbarch.
* mips-linux-tdep.c (mips_linux_init_abi): Likewise.
* ppc-linux-tdep.c (ppc_linux_init_abi): Likewise.
* s390-linux-tdep.c (s390_gdbarch_init): Likewise.
* sparc-linux-tdep.c (sparc32_linux_init_abi): Likewise.
* sparc64-linux-tdep.c (sparc64_linux_init_abi): Likewise.
* xml-syscall.c: Include gdbarch.h.
(set_xml_syscall_file_name): Accept gdbarch parameter.
(get_syscall_by_number): Likewise.
(get_syscall_by_name): Likewise.
(get_syscall_names): Likewise.
(my_gdb_datadir): Delete global variable.
(struct syscalls_info) <my_gdb_datadir>: New variable.
(struct syscalls_info) <sysinfo>: Rename variable to
"syscalls_info".
(sysinfo): Delete global variable.
(have_initialized_sysinfo): Likewise.
(xml_syscall_file): Likewise.
(sysinfo_free_syscalls_desc): Rename to...
(syscalls_info_free_syscalls_desc): ... this.
(free_syscalls_info): Rename "sysinfo" to "syscalls_info". Adjust
code to the new layout of "struct syscalls_info".
(make_cleanup_free_syscalls_info): Rename parameter "sysinfo" to
"syscalls_info".
(syscall_create_syscall_desc): Likewise.
(syscall_start_syscall): Likewise.
(syscall_parse_xml): Likewise.
(xml_init_syscalls_info): Likewise. Drop "const" from return value.
(init_sysinfo): Rename to...
(init_syscalls_info): ...this. Add gdbarch as a parameter.
Adjust function to deal with gdbarch.
(xml_get_syscall_number): Delete parameter sysinfo. Accept
gdbarch as a parameter. Adjust code.
(xml_get_syscall_name): Likewise.
(xml_list_of_syscalls): Likewise.
(set_xml_syscall_file_name): Accept gdbarch as parameter.
(get_syscall_by_number): Likewise.
(get_syscall_by_name): Likewise.
(get_syscall_names): Likewise.
* xml-syscall.h (set_xml_syscall_file_name): Likewise.
(get_syscall_by_number): Likewise.
(get_syscall_by_name): Likewise.
(get_syscall_names): Likewise.
gdb/testsuite/
2014-11-20 Sergio Durigan Junior <sergiodj@redhat.com>
PR breakpoints/10737
* gdb.base/catch-syscall.exp (do_syscall_tests): Call
test_catch_syscall_multi_arch.
(test_catch_syscall_multi_arch): New function.
2014-11-21 01:28:18 +08:00
|
|
|
struct syscalls_info;
|
2016-01-19 01:49:23 +08:00
|
|
|
struct thread_info;
|
Intel MPX bound violation handling
With Intel Memory Protection Extensions it was introduced the concept of
boundary violation. A boundary violations is presented to the inferior as
a segmentation fault having SIGCODE 3. This patch adds a
handler for a boundary violation extending the information displayed
when a bound violation is presented to the inferior. In the stop mode
case the debugger will also display the kind of violation: "upper" or
"lower", bounds and the address accessed.
On no stop mode the information will still remain unchanged. Additional
information about bound violations are not meaningful in that case user
does not know the line in which violation occurred as well.
When the segmentation fault handler is stop mode the out puts will be
changed as exemplified below.
The usual output of a segfault is:
Program received signal SIGSEGV, Segmentation fault
0x0000000000400d7c in upper (p=0x603010, a=0x603030, b=0x603050,
c=0x603070, d=0x603090, len=7) at i386-mpx-sigsegv.c:68
68 value = *(p + len);
In case it is a bound violation it will be presented as:
Program received signal SIGSEGV, Segmentation fault
Upper bound violation while accessing address 0x7fffffffc3b3
Bounds: [lower = 0x7fffffffc390, upper = 0x7fffffffc3a3]
0x0000000000400d7c in upper (p=0x603010, a=0x603030, b=0x603050,
c=0x603070, d=0x603090, len=7) at i386-mpx-sigsegv.c:68
68 value = *(p + len);
In mi mode the output of a segfault is:
*stopped,reason="signal-received",signal-name="SIGSEGV",
signal-meaning="Segmentation fault", frame={addr="0x0000000000400d7c",
func="upper",args=[{name="p", value="0x603010"},{name="a",value="0x603030"}
,{name="b",value="0x603050"}, {name="c",value="0x603070"},
{name="d",value="0x603090"},{name="len",value="7"}],
file="i386-mpx-sigsegv.c",fullname="i386-mpx-sigsegv.c",line="68"},
thread-id="1",stopped-threads="all",core="6"
in the case of a bound violation:
*stopped,reason="signal-received",signal-name="SIGSEGV",
signal-meaning="Segmentation fault",
sigcode-meaning="Upper bound violation",
lower-bound="0x603010",upper-bound="0x603023",bound-access="0x60302f",
frame={addr="0x0000000000400d7c",func="upper",args=[{name="p",
value="0x603010"},{name="a",value="0x603030"},{name="b",value="0x603050"},
{name="c",value="0x603070"},{name="d",value="0x603090"},
{name="len",value="7"}],file="i386-mpx-sigsegv.c",
fullname="i386-mpx-sigsegv.c",line="68"},thread-id="1",
stopped-threads="all",core="6"
2016-02-18 Walfred Tedeschi <walfred.tedeschi@intel.com>
gdb/ChangeLog:
* NEWS: Add entry for bound violation.
* amd64-linux-tdep.c (amd64_linux_init_abi_common):
Add handler for segmentation fault.
* gdbarch.sh (handle_segmentation_fault): New.
* gdbarch.c: Regenerate.
* gdbarch.h: Regenerate.
* i386-linux-tdep.c (i386_linux_handle_segmentation_fault): New.
(SIG_CODE_BONDARY_FAULT): New define.
(i386_linux_init_abi): Use i386_mpx_bound_violation_handler.
* i386-linux-tdep.h (i386_linux_handle_segmentation_fault) New.
* i386-tdep.c (i386_mpx_enabled): Add as external.
* i386-tdep.c (i386_mpx_enabled): Add as external.
* infrun.c (handle_segmentation_fault): New function.
(print_signal_received_reason): Use handle_segmentation_fault.
gdb/testsuite/ChangeLog:
* gdb.arch/i386-mpx-sigsegv.c: New file.
* gdb.arch/i386-mpx-sigsegv.exp: New file.
* gdb.arch/i386-mpx-simple_segv.c: New file.
* gdb.arch/i386-mpx-simple_segv.exp: New file.
gdb/doc/ChangeLog:
* gdb.texinfo (Signals): Add bound violation display hints for
a SIGSEGV.
2016-02-19 00:24:59 +08:00
|
|
|
struct ui_out;
|
1999-06-15 02:08:47 +08:00
|
|
|
|
2014-10-22 19:16:56 +08:00
|
|
|
#include "regcache.h"
|
|
|
|
|
|
2012-11-09 09:47:20 +08:00
|
|
|
/* The architecture associated with the inferior through the
|
|
|
|
|
connection to the target.
|
|
|
|
|
|
|
|
|
|
The architecture vector provides some information that is really a
|
|
|
|
|
property of the inferior, accessed through a particular target:
|
|
|
|
|
ptrace operations; the layout of certain RSP packets; the solib_ops
|
|
|
|
|
vector; etc. To differentiate architecture accesses to
|
|
|
|
|
per-inferior/target properties from
|
|
|
|
|
per-thread/per-frame/per-objfile properties, accesses to
|
|
|
|
|
per-inferior/target properties should be made through this
|
|
|
|
|
gdbarch. */
|
|
|
|
|
|
|
|
|
|
/* This is a convenience wrapper for 'current_inferior ()->gdbarch'. */
|
* gdbarch.sh (target_gdbarch): Remove macro.
(get_target_gdbarch): Rename to target_gdbarch.
* gdbarch.c, gdbarch.h: Rebuild.
* ada-tasks.c, aix-thread.c, amd64-linux-nat.c, arch-utils.c,
arm-tdep.c, auxv.c, breakpoint.c, bsd-uthread.c, corefile.c,
darwin-nat-info.c, dcache.c, dsrec.c, exec.c, fbsd-nat.c,
filesystem.c, gcore.c, gnu-nat.c, i386-darwin-nat.c, i386-nat.c,
ia64-vms-tdep.c, inf-ptrace.c, infcmd.c, jit.c, linux-nat.c,
linux-tdep.c, linux-thread-db.c, m32r-rom.c, memattr.c,
mep-tdep.c, microblaze-tdep.c, mips-linux-nat.c,
mips-linux-tdep.c, mips-tdep.c, monitor.c, moxie-tdep.c,
nto-procfs.c, nto-tdep.c, ppc-linux-nat.c, proc-service.c,
procfs.c, progspace.c, ravenscar-thread.c, record.c,
remote-m32r-sdi.c, remote-mips.c, remote-sim.c, remote.c,
rl78-tdep.c, rs6000-nat.c, rx-tdep.c, s390-nat.c, sol-thread.c,
solib-darwin.c, solib-dsbt.c, solib-frv.c, solib-ia64-hpux.c,
solib-irix.c, solib-pa64.c, solib-som.c, solib-spu.c,
solib-sunos.c, solib-svr4.c, solib.c, spu-linux-nat.c,
spu-multiarch.c, spu-tdep.c, symfile-mem.c, symfile.c, symtab.c,
target-descriptions.c, target.c, target.h, tracepoint.c,
windows-nat.c, windows-tdep.c, xcoffsolib.c, cli/cli-dump.c,
common/agent.c, mi/mi-interp.c, python/py-finishbreakpoint.c,
python/py-inferior.c, python/python.c: Update.
2012-11-10 03:58:03 +08:00
|
|
|
extern struct gdbarch *target_gdbarch (void);
|
2012-11-09 09:47:20 +08:00
|
|
|
|
2012-06-05 21:50:50 +08:00
|
|
|
/* Callback type for the 'iterate_over_objfiles_in_search_order'
|
|
|
|
|
gdbarch method. */
|
|
|
|
|
|
|
|
|
|
typedef int (iterate_over_objfiles_in_search_order_cb_ftype)
|
|
|
|
|
(struct objfile *objfile, void *cb_data);
|
|
|
|
|
|
2015-01-14 20:01:38 +08:00
|
|
|
/* Callback type for regset section iterators. The callback usually
|
|
|
|
|
invokes the REGSET's supply or collect method, to which it must
|
|
|
|
|
pass a buffer with at least the given SIZE. SECT_NAME is a BFD
|
|
|
|
|
section name, and HUMAN_NAME is used for diagnostic messages.
|
|
|
|
|
CB_DATA should have been passed unchanged through the iterator. */
|
|
|
|
|
|
Replace 'core_regset_sections' by iterator method
The core_regset_sections list in gdbarch (needed for multi-arch
capable core file generation support) is replaced by an iterator
method. Overall, this reduces the code a bit, and it allows for more
flexibility.
gdb/ChangeLog:
* amd64-linux-tdep.c (amd64_linux_regset_sections): Remove.
(amd64_linux_iterate_over_regset_sections): New.
(amd64_linux_init_abi_common): Don't install the regset section
list, but the new iterator in gdbarch.
* arm-linux-tdep.c (arm_linux_fpa_regset_sections)
(arm_linux_vfp_regset_sections): Remove. Move combined logic...
(arm_linux_iterate_over_regset_sections): ...here. New function.
(arm_linux_init_abi): Set iterator instead of section list.
* corelow.c (get_core_registers_cb): New function, logic moved
from...
(get_core_registers): ...loop body here. Use new iterator method
instead of walking through the regset section list.
* gdbarch.sh: Remove 'core_regset_sections'. New method
'iterate_over_regset_sections'. New typedef
'iterate_over_regset_sections_cb'.
* gdbarch.c: Regenerate.
* gdbarch.h: Likewise.
* i386-linux-tdep.c (i386_linux_regset_sections)
(i386_linux_sse_regset_sections, i386_linux_avx_regset_sections):
Remove.
(i386_linux_iterate_over_regset_sections): New.
(i386_linux_init_abi): Don't choose a regset section list, but
install new iterator in gdbarch.
* linux-tdep.c (struct linux_collect_regset_section_cb_data): New.
(linux_collect_regset_section_cb): New function, logic moved
from...
(linux_collect_thread_registers): ...loop body here. Use iterator
method instead of walking through list.
(linux_make_corefile_notes_1): Check for presence of iterator
method instead of regset section list.
* ppc-linux-tdep.c (ppc_linux_vsx_regset_sections)
(ppc_linux_vmx_regset_sections, ppc_linux_fp_regset_sections)
(ppc64_linux_vsx_regset_sections, ppc64_linux_vmx_regset_sections)
(ppc64_linux_fp_regset_sections): Remove. Move combined logic...
(ppc_linux_iterate_over_regset_sections): ...here. New function.
(ppc_linux_init_abi): Don't choose from above regset section
lists, but install new iterator in gdbarch.
* regset.h (struct core_regset_section): Remove.
* s390-linux-tdep.c (struct gdbarch_tdep): Add new fields
have_linux_v1, have_linux_v2, and have_tdb.
(s390_linux32_regset_sections, s390_linux32v1_regset_sections)
(s390_linux32v2_regset_sections, s390_linux64_regset_sections)
(s390_linux64v1_regset_sections, s390_linux64v2_regset_sections)
(s390x_linux64_regset_sections, s390x_linux64v1_regset_sections)
(s390x_linux64v2_regset_sections): Remove. Move combined logic...
(s390_iterate_over_regset_sections): ...here. New function. Use
new tdep fields.
(s390_gdbarch_init): Set new tdep fields. Don't choose from above
regset section lists, but install new iterator.
2014-09-04 23:26:43 +08:00
|
|
|
typedef void (iterate_over_regset_sections_cb)
|
Add 'regset' parameter to 'iterate_over_regset_sections_cb'
This adds the 'regset' parameter to the iterator callback.
Consequently the 'regset_from_core_section' method is dropped for all
targets that provide the iterator method.
This change prepares for replacing regset_from_core_section
everywhere, thereby eliminating one gdbarch interface. Since the
iterator is usually no more complex than regset_from_core_section
alone, targets that previously didn't define core_regset_sections will
then gain multi-arch capable core file generation support without
increased complexity.
gdb/ChangeLog:
* gdbarch.sh (iterate_over_regset_sections_cb): Add regset
parameter.
* gdbarch.h: Regenerate.
* corelow.c (sniff_core_bfd): Don't sniff if gdbarch has a regset
iterator.
(get_core_register_section): Add parameter 'regset' and use it, if
set. Add parameter 'min_size' and verify the bfd section size
against it.
(get_core_registers_cb): Add parameter 'regset' and pass it to
get_core_register section. For the "standard" register sections
".reg" and ".reg2", set an appropriate default for human_name.
(get_core_registers): Don't abort when the gdbarch has an iterator
but no regset_from_core_section. Add NULL/0 for parameters
'regset'/'min_size' in calls to get_core_register_section.
* linux-tdep.c (linux_collect_regset_section_cb): Add parameter
'regset' and use it instead of calling the
regset_from_core_section gdbarch method.
* i386-tdep.h (struct gdbarch_tdep): Add field 'fpregset'.
* i386-tdep.c (i386_supply_xstateregset)
(i386_collect_xstateregset, i386_xstateregset): Moved to
i386-linux-tdep.c.
(i386_regset_from_core_section): Drop handling for .reg-xfp and
.reg-xstate.
(i386_gdbarch_init): Set tdep field 'fpregset'. Enable generic
core file support only if the regset iterator hasn't been set.
* i386-linux-tdep.c (i386_linux_supply_xstateregset)
(i386_linux_collect_xstateregset, i386_linux_xstateregset): New.
Moved from i386-tdep.c and renamed to *_linux*.
(i386_linux_iterate_over_regset_sections): Add regset parameter to
each callback invocation. Allow any .reg-xstate size when reading
from a core file.
* amd64-tdep.c (amd64_supply_xstateregset)
(amd64_collect_xstateregset, amd64_xstateregset): Moved to
amd64-linux-tdep.c.
(amd64_regset_from_core_section): Remove.
(amd64_init_abi): Set new tdep field 'fpregset'. No longer
install an amd64-specific regset_from_core_section gdbarch method.
* amd64-linux-tdep.c (amd64_linux_supply_xstateregset)
(amd64_linux_collect_xstateregset, amd64_linux_xstateregset): New.
Moved from amd64-tdep.c and renamed to *_linux*.
(amd64_linux_iterate_over_regset_sections): Add regset parameter
to each callback invocation. Allow any .reg-xstate size when
reading from a core file.
* arm-linux-tdep.c (arm_linux_regset_from_core_section): Remove.
(arm_linux_iterate_over_regset_sections): Add regset parameter to
each callback invocation.
(arm_linux_init_abi): No longer set the regset_from_core_section
gdbarch method.
* ppc-linux-tdep.c (ppc_linux_regset_from_core_section): Remove.
(ppc_linux_iterate_over_regset_sections): Add regset parameter to
each callback invocation.
(ppc_linux_init_abi): No longer set the regset_from_core_section
gdbarch method.
* s390-linux-tdep.c (struct gdbarch_tdep): Remove the fields
gregset, sizeof_gregset, fpregset, and sizeof_fpregset.
(s390_regset_from_core_section): Remove.
(s390_iterate_over_regset_sections): Add regset parameter to each
callback invocation.
(s390_gdbarch_init): No longer set the regset_from_core_section
gdbarch method. Drop initialization of deleted tdep fields.
2014-09-12 16:42:48 +08:00
|
|
|
(const char *sect_name, int size, const struct regset *regset,
|
|
|
|
|
const char *human_name, void *cb_data);
|
Replace 'core_regset_sections' by iterator method
The core_regset_sections list in gdbarch (needed for multi-arch
capable core file generation support) is replaced by an iterator
method. Overall, this reduces the code a bit, and it allows for more
flexibility.
gdb/ChangeLog:
* amd64-linux-tdep.c (amd64_linux_regset_sections): Remove.
(amd64_linux_iterate_over_regset_sections): New.
(amd64_linux_init_abi_common): Don't install the regset section
list, but the new iterator in gdbarch.
* arm-linux-tdep.c (arm_linux_fpa_regset_sections)
(arm_linux_vfp_regset_sections): Remove. Move combined logic...
(arm_linux_iterate_over_regset_sections): ...here. New function.
(arm_linux_init_abi): Set iterator instead of section list.
* corelow.c (get_core_registers_cb): New function, logic moved
from...
(get_core_registers): ...loop body here. Use new iterator method
instead of walking through the regset section list.
* gdbarch.sh: Remove 'core_regset_sections'. New method
'iterate_over_regset_sections'. New typedef
'iterate_over_regset_sections_cb'.
* gdbarch.c: Regenerate.
* gdbarch.h: Likewise.
* i386-linux-tdep.c (i386_linux_regset_sections)
(i386_linux_sse_regset_sections, i386_linux_avx_regset_sections):
Remove.
(i386_linux_iterate_over_regset_sections): New.
(i386_linux_init_abi): Don't choose a regset section list, but
install new iterator in gdbarch.
* linux-tdep.c (struct linux_collect_regset_section_cb_data): New.
(linux_collect_regset_section_cb): New function, logic moved
from...
(linux_collect_thread_registers): ...loop body here. Use iterator
method instead of walking through list.
(linux_make_corefile_notes_1): Check for presence of iterator
method instead of regset section list.
* ppc-linux-tdep.c (ppc_linux_vsx_regset_sections)
(ppc_linux_vmx_regset_sections, ppc_linux_fp_regset_sections)
(ppc64_linux_vsx_regset_sections, ppc64_linux_vmx_regset_sections)
(ppc64_linux_fp_regset_sections): Remove. Move combined logic...
(ppc_linux_iterate_over_regset_sections): ...here. New function.
(ppc_linux_init_abi): Don't choose from above regset section
lists, but install new iterator in gdbarch.
* regset.h (struct core_regset_section): Remove.
* s390-linux-tdep.c (struct gdbarch_tdep): Add new fields
have_linux_v1, have_linux_v2, and have_tdb.
(s390_linux32_regset_sections, s390_linux32v1_regset_sections)
(s390_linux32v2_regset_sections, s390_linux64_regset_sections)
(s390_linux64v1_regset_sections, s390_linux64v2_regset_sections)
(s390x_linux64_regset_sections, s390x_linux64v1_regset_sections)
(s390x_linux64v2_regset_sections): Remove. Move combined logic...
(s390_iterate_over_regset_sections): ...here. New function. Use
new tdep fields.
(s390_gdbarch_init): Set new tdep fields. Don't choose from above
regset section lists, but install new iterator.
2014-09-04 23:26:43 +08:00
|
|
|
|
1999-06-15 02:08:47 +08:00
|
|
|
|
2011-01-08 03:36:19 +08:00
|
|
|
/* The following are pre-initialized by GDBARCH. */
|
1999-06-15 02:08:47 +08:00
|
|
|
|
1999-08-31 09:14:27 +08:00
|
|
|
extern const struct bfd_arch_info * gdbarch_bfd_arch_info (struct gdbarch *gdbarch);
|
2011-01-08 03:36:19 +08:00
|
|
|
/* set_gdbarch_bfd_arch_info() - not applicable - pre-initialized. */
|
1999-06-15 02:08:47 +08:00
|
|
|
|
2014-01-02 11:02:56 +08:00
|
|
|
extern enum bfd_endian gdbarch_byte_order (struct gdbarch *gdbarch);
|
2011-01-08 03:36:19 +08:00
|
|
|
/* set_gdbarch_byte_order() - not applicable - pre-initialized. */
|
1999-06-15 02:08:47 +08:00
|
|
|
|
2014-01-02 11:02:56 +08:00
|
|
|
extern enum bfd_endian gdbarch_byte_order_for_code (struct gdbarch *gdbarch);
|
2011-01-08 03:36:19 +08:00
|
|
|
/* set_gdbarch_byte_order_for_code() - not applicable - pre-initialized. */
|
2008-08-12 03:00:25 +08:00
|
|
|
|
2003-01-05 07:38:46 +08:00
|
|
|
extern enum gdb_osabi gdbarch_osabi (struct gdbarch *gdbarch);
|
2011-01-08 03:36:19 +08:00
|
|
|
/* set_gdbarch_osabi() - not applicable - pre-initialized. */
|
2003-01-05 07:38:46 +08:00
|
|
|
|
2006-11-29 06:10:26 +08:00
|
|
|
extern const struct target_desc * gdbarch_target_desc (struct gdbarch *gdbarch);
|
2011-01-08 03:36:19 +08:00
|
|
|
/* set_gdbarch_target_desc() - not applicable - pre-initialized. */
|
2006-11-29 06:10:26 +08:00
|
|
|
|
1999-06-15 02:08:47 +08:00
|
|
|
|
2011-01-08 03:36:19 +08:00
|
|
|
/* The following are initialized by the target dependent code. */
|
1999-06-15 02:08:47 +08:00
|
|
|
|
2008-01-19 01:07:40 +08:00
|
|
|
/* The bit byte-order has to do just with numbering of bits in debugging symbols
|
|
|
|
|
and such. Conceptually, it's quite separate from byte/word byte order. */
|
|
|
|
|
|
|
|
|
|
extern int gdbarch_bits_big_endian (struct gdbarch *gdbarch);
|
|
|
|
|
extern void set_gdbarch_bits_big_endian (struct gdbarch *gdbarch, int bits_big_endian);
|
|
|
|
|
|
2000-08-11 10:55:38 +08:00
|
|
|
/* Number of bits in a char or unsigned char for the target machine.
|
|
|
|
|
Just like CHAR_BIT in <limits.h> but describes the target machine.
|
2004-06-14 00:43:58 +08:00
|
|
|
v:TARGET_CHAR_BIT:int:char_bit::::8 * sizeof (char):8::0:
|
2000-08-11 10:55:38 +08:00
|
|
|
|
|
|
|
|
Number of bits in a short or unsigned short for the target machine. */
|
1999-12-14 09:06:04 +08:00
|
|
|
|
1999-08-31 09:14:27 +08:00
|
|
|
extern int gdbarch_short_bit (struct gdbarch *gdbarch);
|
|
|
|
|
extern void set_gdbarch_short_bit (struct gdbarch *gdbarch, int short_bit);
|
1999-06-15 02:08:47 +08:00
|
|
|
|
2000-08-11 10:55:38 +08:00
|
|
|
/* Number of bits in an int or unsigned int for the target machine. */
|
|
|
|
|
|
1999-08-31 09:14:27 +08:00
|
|
|
extern int gdbarch_int_bit (struct gdbarch *gdbarch);
|
|
|
|
|
extern void set_gdbarch_int_bit (struct gdbarch *gdbarch, int int_bit);
|
1999-06-15 02:08:47 +08:00
|
|
|
|
2000-08-11 10:55:38 +08:00
|
|
|
/* Number of bits in a long or unsigned long for the target machine. */
|
|
|
|
|
|
1999-08-31 09:14:27 +08:00
|
|
|
extern int gdbarch_long_bit (struct gdbarch *gdbarch);
|
|
|
|
|
extern void set_gdbarch_long_bit (struct gdbarch *gdbarch, int long_bit);
|
1999-06-15 02:08:47 +08:00
|
|
|
|
2000-08-11 10:55:38 +08:00
|
|
|
/* Number of bits in a long long or unsigned long long for the target
|
|
|
|
|
machine. */
|
|
|
|
|
|
1999-08-31 09:14:27 +08:00
|
|
|
extern int gdbarch_long_long_bit (struct gdbarch *gdbarch);
|
|
|
|
|
extern void set_gdbarch_long_long_bit (struct gdbarch *gdbarch, int long_long_bit);
|
1999-06-15 02:08:47 +08:00
|
|
|
|
2011-10-12 03:08:59 +08:00
|
|
|
/* Alignment of a long long or unsigned long long for the target
|
|
|
|
|
machine. */
|
|
|
|
|
|
|
|
|
|
extern int gdbarch_long_long_align_bit (struct gdbarch *gdbarch);
|
|
|
|
|
extern void set_gdbarch_long_long_align_bit (struct gdbarch *gdbarch, int long_long_align_bit);
|
|
|
|
|
|
2010-07-06 20:56:24 +08:00
|
|
|
/* The ABI default bit-size and format for "half", "float", "double", and
|
|
|
|
|
"long double". These bit/format pairs should eventually be combined
|
|
|
|
|
into a single object. For the moment, just initialize them as a pair.
|
* doublest.c (floatformat_from_length): Use the right element from
gdbarch floatformats.
(floatformat_from_type, extract_typed_floating)
(store_typed_floating): Likewise.
* doublest.h: Remove declarations for undefined floatformat arrays.
* gdbarch.sh (float_format, double_format, long_double_format): Change
to pairs.
(pformat): Update for pairs.
* gdbarch.c, gdbarch.h: Regenerated.
* gdbtypes.c (floatformats_ieee_single, floatformats_ieee_double)
(floatformats_ieee_double_littlebyte_bigword)
(floatformats_i387_ext, floatformats_m68881_ext, floatformats_arm_ext)
(floatformats_ia64_spill, floatformats_ia64_quad, floatformats_vax_f)
(floatformats_vax_d): New variables.
(builtin_type_ieee_single, builtin_type_ieee_double)
(builtin_type_arm_ext, builtin_type_ia64_spill)
(builtin_type_ia64_quad): Replace arrays with individual types.
(builtin_type_ieee_single_big, builtin_type_ieee_single_little)
(builtin_type_ieee_double_big, builtin_type_ieee_double_little)
(builtin_type_ieee_double_littlebyte_bigword, builtin_type_i960_ext)
(builtin_type_m88110_ext, builtin_type_m88110_harris_ext)
(builtin_type_arm_ext_big, builtin_type_arm_ext_littlebyte_bigword)
(builtin_type_ia64_spill_big, builtin_type_ia64_spill_little)
(builtin_type_ia64_quad_big, builtin_type_ia64_quad_little): Delete
unused and endian-specific types.
(recursive_dump_type): Update for floatformat pairs.
(build_flt): Move higher. Handle bit == -1. Take a floatformat pair.
(build_gdbtypes): Use build_flt.
(_initialize_gdbtypes): Update set of initialized types.
* gdbtypes.h: Update declarations to match gdbtypes.c.
(struct main_type): Store a pointer to two floatformats.
* arch-utils.c (default_float_format, default_double_format): Delete.
* arch-utils.h (default_float_format, default_double_format): Delete.
* arm-tdep.c, avr-tdep.c, hppa-tdep.c, hppabsd-tdep.c, i386-tdep.c,
ia64-tdep.c, iq2000-tdep.c, m68k-tdep.c, m88k-tdep.c,
mips-linux-tdep.c, mips-tdep.c, mt-tdep.c, ppcobsd-tdep.c,
sparc-linux-tdep.c, sparc-tdep.c, sparcnbsd-tdep.c, spu-tdep.c,
vax-tdep.c, alpha-tdep.c, ppc-sysv-tdep.c: Update.
2007-01-30 01:31:06 +08:00
|
|
|
Each format describes both the big and little endian layouts (if
|
|
|
|
|
useful). */
|
2000-08-11 10:55:38 +08:00
|
|
|
|
2010-07-06 20:56:24 +08:00
|
|
|
extern int gdbarch_half_bit (struct gdbarch *gdbarch);
|
|
|
|
|
extern void set_gdbarch_half_bit (struct gdbarch *gdbarch, int half_bit);
|
|
|
|
|
|
|
|
|
|
extern const struct floatformat ** gdbarch_half_format (struct gdbarch *gdbarch);
|
|
|
|
|
extern void set_gdbarch_half_format (struct gdbarch *gdbarch, const struct floatformat ** half_format);
|
|
|
|
|
|
1999-08-31 09:14:27 +08:00
|
|
|
extern int gdbarch_float_bit (struct gdbarch *gdbarch);
|
|
|
|
|
extern void set_gdbarch_float_bit (struct gdbarch *gdbarch, int float_bit);
|
1999-06-15 02:08:47 +08:00
|
|
|
|
* doublest.c (floatformat_from_length): Use the right element from
gdbarch floatformats.
(floatformat_from_type, extract_typed_floating)
(store_typed_floating): Likewise.
* doublest.h: Remove declarations for undefined floatformat arrays.
* gdbarch.sh (float_format, double_format, long_double_format): Change
to pairs.
(pformat): Update for pairs.
* gdbarch.c, gdbarch.h: Regenerated.
* gdbtypes.c (floatformats_ieee_single, floatformats_ieee_double)
(floatformats_ieee_double_littlebyte_bigword)
(floatformats_i387_ext, floatformats_m68881_ext, floatformats_arm_ext)
(floatformats_ia64_spill, floatformats_ia64_quad, floatformats_vax_f)
(floatformats_vax_d): New variables.
(builtin_type_ieee_single, builtin_type_ieee_double)
(builtin_type_arm_ext, builtin_type_ia64_spill)
(builtin_type_ia64_quad): Replace arrays with individual types.
(builtin_type_ieee_single_big, builtin_type_ieee_single_little)
(builtin_type_ieee_double_big, builtin_type_ieee_double_little)
(builtin_type_ieee_double_littlebyte_bigword, builtin_type_i960_ext)
(builtin_type_m88110_ext, builtin_type_m88110_harris_ext)
(builtin_type_arm_ext_big, builtin_type_arm_ext_littlebyte_bigword)
(builtin_type_ia64_spill_big, builtin_type_ia64_spill_little)
(builtin_type_ia64_quad_big, builtin_type_ia64_quad_little): Delete
unused and endian-specific types.
(recursive_dump_type): Update for floatformat pairs.
(build_flt): Move higher. Handle bit == -1. Take a floatformat pair.
(build_gdbtypes): Use build_flt.
(_initialize_gdbtypes): Update set of initialized types.
* gdbtypes.h: Update declarations to match gdbtypes.c.
(struct main_type): Store a pointer to two floatformats.
* arch-utils.c (default_float_format, default_double_format): Delete.
* arch-utils.h (default_float_format, default_double_format): Delete.
* arm-tdep.c, avr-tdep.c, hppa-tdep.c, hppabsd-tdep.c, i386-tdep.c,
ia64-tdep.c, iq2000-tdep.c, m68k-tdep.c, m88k-tdep.c,
mips-linux-tdep.c, mips-tdep.c, mt-tdep.c, ppcobsd-tdep.c,
sparc-linux-tdep.c, sparc-tdep.c, sparcnbsd-tdep.c, spu-tdep.c,
vax-tdep.c, alpha-tdep.c, ppc-sysv-tdep.c: Update.
2007-01-30 01:31:06 +08:00
|
|
|
extern const struct floatformat ** gdbarch_float_format (struct gdbarch *gdbarch);
|
|
|
|
|
extern void set_gdbarch_float_format (struct gdbarch *gdbarch, const struct floatformat ** float_format);
|
2000-08-11 10:55:38 +08:00
|
|
|
|
1999-08-31 09:14:27 +08:00
|
|
|
extern int gdbarch_double_bit (struct gdbarch *gdbarch);
|
|
|
|
|
extern void set_gdbarch_double_bit (struct gdbarch *gdbarch, int double_bit);
|
1999-06-15 02:08:47 +08:00
|
|
|
|
* doublest.c (floatformat_from_length): Use the right element from
gdbarch floatformats.
(floatformat_from_type, extract_typed_floating)
(store_typed_floating): Likewise.
* doublest.h: Remove declarations for undefined floatformat arrays.
* gdbarch.sh (float_format, double_format, long_double_format): Change
to pairs.
(pformat): Update for pairs.
* gdbarch.c, gdbarch.h: Regenerated.
* gdbtypes.c (floatformats_ieee_single, floatformats_ieee_double)
(floatformats_ieee_double_littlebyte_bigword)
(floatformats_i387_ext, floatformats_m68881_ext, floatformats_arm_ext)
(floatformats_ia64_spill, floatformats_ia64_quad, floatformats_vax_f)
(floatformats_vax_d): New variables.
(builtin_type_ieee_single, builtin_type_ieee_double)
(builtin_type_arm_ext, builtin_type_ia64_spill)
(builtin_type_ia64_quad): Replace arrays with individual types.
(builtin_type_ieee_single_big, builtin_type_ieee_single_little)
(builtin_type_ieee_double_big, builtin_type_ieee_double_little)
(builtin_type_ieee_double_littlebyte_bigword, builtin_type_i960_ext)
(builtin_type_m88110_ext, builtin_type_m88110_harris_ext)
(builtin_type_arm_ext_big, builtin_type_arm_ext_littlebyte_bigword)
(builtin_type_ia64_spill_big, builtin_type_ia64_spill_little)
(builtin_type_ia64_quad_big, builtin_type_ia64_quad_little): Delete
unused and endian-specific types.
(recursive_dump_type): Update for floatformat pairs.
(build_flt): Move higher. Handle bit == -1. Take a floatformat pair.
(build_gdbtypes): Use build_flt.
(_initialize_gdbtypes): Update set of initialized types.
* gdbtypes.h: Update declarations to match gdbtypes.c.
(struct main_type): Store a pointer to two floatformats.
* arch-utils.c (default_float_format, default_double_format): Delete.
* arch-utils.h (default_float_format, default_double_format): Delete.
* arm-tdep.c, avr-tdep.c, hppa-tdep.c, hppabsd-tdep.c, i386-tdep.c,
ia64-tdep.c, iq2000-tdep.c, m68k-tdep.c, m88k-tdep.c,
mips-linux-tdep.c, mips-tdep.c, mt-tdep.c, ppcobsd-tdep.c,
sparc-linux-tdep.c, sparc-tdep.c, sparcnbsd-tdep.c, spu-tdep.c,
vax-tdep.c, alpha-tdep.c, ppc-sysv-tdep.c: Update.
2007-01-30 01:31:06 +08:00
|
|
|
extern const struct floatformat ** gdbarch_double_format (struct gdbarch *gdbarch);
|
|
|
|
|
extern void set_gdbarch_double_format (struct gdbarch *gdbarch, const struct floatformat ** double_format);
|
2000-08-11 10:55:38 +08:00
|
|
|
|
1999-08-31 09:14:27 +08:00
|
|
|
extern int gdbarch_long_double_bit (struct gdbarch *gdbarch);
|
|
|
|
|
extern void set_gdbarch_long_double_bit (struct gdbarch *gdbarch, int long_double_bit);
|
1999-06-15 02:08:47 +08:00
|
|
|
|
* doublest.c (floatformat_from_length): Use the right element from
gdbarch floatformats.
(floatformat_from_type, extract_typed_floating)
(store_typed_floating): Likewise.
* doublest.h: Remove declarations for undefined floatformat arrays.
* gdbarch.sh (float_format, double_format, long_double_format): Change
to pairs.
(pformat): Update for pairs.
* gdbarch.c, gdbarch.h: Regenerated.
* gdbtypes.c (floatformats_ieee_single, floatformats_ieee_double)
(floatformats_ieee_double_littlebyte_bigword)
(floatformats_i387_ext, floatformats_m68881_ext, floatformats_arm_ext)
(floatformats_ia64_spill, floatformats_ia64_quad, floatformats_vax_f)
(floatformats_vax_d): New variables.
(builtin_type_ieee_single, builtin_type_ieee_double)
(builtin_type_arm_ext, builtin_type_ia64_spill)
(builtin_type_ia64_quad): Replace arrays with individual types.
(builtin_type_ieee_single_big, builtin_type_ieee_single_little)
(builtin_type_ieee_double_big, builtin_type_ieee_double_little)
(builtin_type_ieee_double_littlebyte_bigword, builtin_type_i960_ext)
(builtin_type_m88110_ext, builtin_type_m88110_harris_ext)
(builtin_type_arm_ext_big, builtin_type_arm_ext_littlebyte_bigword)
(builtin_type_ia64_spill_big, builtin_type_ia64_spill_little)
(builtin_type_ia64_quad_big, builtin_type_ia64_quad_little): Delete
unused and endian-specific types.
(recursive_dump_type): Update for floatformat pairs.
(build_flt): Move higher. Handle bit == -1. Take a floatformat pair.
(build_gdbtypes): Use build_flt.
(_initialize_gdbtypes): Update set of initialized types.
* gdbtypes.h: Update declarations to match gdbtypes.c.
(struct main_type): Store a pointer to two floatformats.
* arch-utils.c (default_float_format, default_double_format): Delete.
* arch-utils.h (default_float_format, default_double_format): Delete.
* arm-tdep.c, avr-tdep.c, hppa-tdep.c, hppabsd-tdep.c, i386-tdep.c,
ia64-tdep.c, iq2000-tdep.c, m68k-tdep.c, m88k-tdep.c,
mips-linux-tdep.c, mips-tdep.c, mt-tdep.c, ppcobsd-tdep.c,
sparc-linux-tdep.c, sparc-tdep.c, sparcnbsd-tdep.c, spu-tdep.c,
vax-tdep.c, alpha-tdep.c, ppc-sysv-tdep.c: Update.
2007-01-30 01:31:06 +08:00
|
|
|
extern const struct floatformat ** gdbarch_long_double_format (struct gdbarch *gdbarch);
|
|
|
|
|
extern void set_gdbarch_long_double_format (struct gdbarch *gdbarch, const struct floatformat ** long_double_format);
|
2004-08-09 03:49:43 +08:00
|
|
|
|
2000-08-26 04:51:19 +08:00
|
|
|
/* For most targets, a pointer on the target and its representation as an
|
|
|
|
|
address in GDB have the same size and "look the same". For such a
|
2007-06-14 01:59:51 +08:00
|
|
|
target, you need only set gdbarch_ptr_bit and gdbarch_addr_bit
|
2000-08-26 04:51:19 +08:00
|
|
|
/ addr_bit will be set from it.
|
|
|
|
|
|
2007-06-14 01:59:51 +08:00
|
|
|
If gdbarch_ptr_bit and gdbarch_addr_bit are different, you'll probably
|
2010-08-07 03:02:15 +08:00
|
|
|
also need to set gdbarch_dwarf2_addr_size, gdbarch_pointer_to_address and
|
|
|
|
|
gdbarch_address_to_pointer as well.
|
2000-08-26 04:51:19 +08:00
|
|
|
|
|
|
|
|
ptr_bit is the size of a pointer on the target */
|
2000-08-11 10:55:38 +08:00
|
|
|
|
|
|
|
|
extern int gdbarch_ptr_bit (struct gdbarch *gdbarch);
|
|
|
|
|
extern void set_gdbarch_ptr_bit (struct gdbarch *gdbarch, int ptr_bit);
|
|
|
|
|
|
2000-08-26 04:51:19 +08:00
|
|
|
/* addr_bit is the size of a target address as represented in gdb */
|
|
|
|
|
|
|
|
|
|
extern int gdbarch_addr_bit (struct gdbarch *gdbarch);
|
|
|
|
|
extern void set_gdbarch_addr_bit (struct gdbarch *gdbarch, int addr_bit);
|
2000-08-11 10:55:38 +08:00
|
|
|
|
2010-08-07 03:02:15 +08:00
|
|
|
/* dwarf2_addr_size is the target address size as used in the Dwarf debug
|
|
|
|
|
info. For .debug_frame FDEs, this is supposed to be the target address
|
|
|
|
|
size from the associated CU header, and which is equivalent to the
|
|
|
|
|
DWARF2_ADDR_SIZE as defined by the target specific GCC back-end.
|
|
|
|
|
Unfortunately there is no good way to determine this value. Therefore
|
|
|
|
|
dwarf2_addr_size simply defaults to the target pointer size.
|
|
|
|
|
|
|
|
|
|
dwarf2_addr_size is not used for .eh_frame FDEs, which are generally
|
|
|
|
|
defined using the target's pointer size so far.
|
|
|
|
|
|
|
|
|
|
Note that dwarf2_addr_size only needs to be redefined by a target if the
|
|
|
|
|
GCC back-end defines a DWARF2_ADDR_SIZE other than the target pointer size,
|
|
|
|
|
and if Dwarf versions < 4 need to be supported. */
|
|
|
|
|
|
|
|
|
|
extern int gdbarch_dwarf2_addr_size (struct gdbarch *gdbarch);
|
|
|
|
|
extern void set_gdbarch_dwarf2_addr_size (struct gdbarch *gdbarch, int dwarf2_addr_size);
|
|
|
|
|
|
2001-12-20 11:26:08 +08:00
|
|
|
/* One if `char' acts like `signed char', zero if `unsigned char'. */
|
|
|
|
|
|
|
|
|
|
extern int gdbarch_char_signed (struct gdbarch *gdbarch);
|
|
|
|
|
extern void set_gdbarch_char_signed (struct gdbarch *gdbarch, int char_signed);
|
|
|
|
|
|
2003-06-08 00:23:12 +08:00
|
|
|
extern int gdbarch_read_pc_p (struct gdbarch *gdbarch);
|
2007-06-16 06:44:56 +08:00
|
|
|
|
|
|
|
|
typedef CORE_ADDR (gdbarch_read_pc_ftype) (struct regcache *regcache);
|
|
|
|
|
extern CORE_ADDR gdbarch_read_pc (struct gdbarch *gdbarch, struct regcache *regcache);
|
1999-08-31 09:14:27 +08:00
|
|
|
extern void set_gdbarch_read_pc (struct gdbarch *gdbarch, gdbarch_read_pc_ftype *read_pc);
|
2007-06-16 06:44:56 +08:00
|
|
|
|
|
|
|
|
extern int gdbarch_write_pc_p (struct gdbarch *gdbarch);
|
|
|
|
|
|
|
|
|
|
typedef void (gdbarch_write_pc_ftype) (struct regcache *regcache, CORE_ADDR val);
|
|
|
|
|
extern void gdbarch_write_pc (struct gdbarch *gdbarch, struct regcache *regcache, CORE_ADDR val);
|
1999-08-31 09:14:27 +08:00
|
|
|
extern void set_gdbarch_write_pc (struct gdbarch *gdbarch, gdbarch_write_pc_ftype *write_pc);
|
1999-06-15 02:08:47 +08:00
|
|
|
|
2001-08-11 08:59:29 +08:00
|
|
|
/* Function for getting target's idea of a frame pointer. FIXME: GDB's
|
|
|
|
|
whole scheme for dealing with "frames" and "frame pointers" needs a
|
|
|
|
|
serious shakedown. */
|
|
|
|
|
|
2007-11-07 14:58:31 +08:00
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typedef void (gdbarch_virtual_frame_pointer_ftype) (struct gdbarch *gdbarch, CORE_ADDR pc, int *frame_regnum, LONGEST *frame_offset);
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2001-08-11 08:59:29 +08:00
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extern void gdbarch_virtual_frame_pointer (struct gdbarch *gdbarch, CORE_ADDR pc, int *frame_regnum, LONGEST *frame_offset);
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extern void set_gdbarch_virtual_frame_pointer (struct gdbarch *gdbarch, gdbarch_virtual_frame_pointer_ftype *virtual_frame_pointer);
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2002-08-02 22:48:19 +08:00
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extern int gdbarch_pseudo_register_read_p (struct gdbarch *gdbarch);
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2001-03-24 09:26:09 +08:00
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gdb/
* regcache.h (regcache_raw_read, regcache_raw_read_signed)
(regcache_raw_read_unsigned, regcache_raw_read_signed)
(regcache_raw_read_unsigned, regcache_raw_read_part)
(regcache_cooked_read, regcache_cooked_read_signed)
(regcache_cooked_read_unsigned, regcache_cooked_read_part)
(regcache_cooked_read_ftype): Change return to enum
register_status.
* regcache.c: Include exceptions.h
(regcache_save): Adjust to handle REG_UNAVAILABLE registers.
(do_cooked_read): Change return to enum register_status. Always
forward to regcache_cooked_read.
(regcache_raw_read): Change return to enum register_status. If
the register is not REG_VALID, memset the buffer. Return the
register's status.
(regcache_raw_read_signed): Handle non-REG_VALID registers and
return the register's status.
(regcache_raw_read_unsigned): Ditto.
(regcache_cooked_read): Change return to enum register_status.
Assert that with read-only regcaches, the register's status must
be known. If the regcache is read-only, and the register is not
REG_VALID, memset the buffer. Return the register's status.
(regcache_cooked_read_signed): Change return to enum
register_status. Handle non-REG_VALID registers and return the
register's status.
(regcache_cooked_read_unsigned): Change return to enum
register_status. Handle non-REG_VALID registers and return the
register's status.
(regcache_xfer_part, regcache_raw_read_part)
(regcache_cooked_read_part): Change return to enum
register_status. Return the register's status.
(regcache_read_pc): Throw NOT_AVAILABLE_ERROR if the register is
unavailable.
(regcache_dump): Handle unavailable cooked registers.
* frame.c (do_frame_register_read): Adjust interface to match
regcache_cooked_read_ftype.
* gdbarch.sh (pseudo_register_read): Change return to enum
register_status.
* gdbarch.h, gdbarch.c: Regenerate.
* i386-tdep.h (i386_pseudo_register_read): Change return to enum
register_status.
* i386-tdep.c (i386_pseudo_register_read): Change return to enum
register_status. If reading a raw register indicates the raw
register is not valid, return the raw register's status,
otherwise, return REG_VALID.
* amd64-tdep.c (amd64_pseudo_register_read): Change return to enum
register_status. Handle non-REG_VALID raw registers and return
the register's status.
* arm-tdep.c (arm_neon_quad_read)
(arm_pseudo_read): Change return to enum register_status. Handle
non-REG_VALID raw registers and return the register's status.
* avr-tdep.c (avr_pseudo_register_read): Ditto.
* frv-tdep.c (frv_pseudo_register_read): Ditto.
* h8300-tdep.c (h8300_pseudo_register_read): Ditto.
* hppa-tdep.c (hppa_pseudo_register_read): Ditto.
* m32c-tdep.c (m32c_move_reg_t): Change return to enum
register_status.
(m32c_raw_read, m32c_raw_write, m32c_banked_read)
(m32c_banked_write, m32c_sb_read, m32c_sb_write, m32c_part_read)
(m32c_part_write, m32c_cat_read, m32c_cat_write)
(m32c_r3r2r1r0_read, m32c_r3r2r1r0_write)
(m32c_pseudo_register_read): Change return to enum
register_status. Adjust.
* m68hc11-tdep.c (m68hc11_pseudo_register_read): Change return to
enum register_status. Return the register's status.
* mep-tdep.c (mep_pseudo_cr32_read): Change return to enum
register_status. Return the register's status.
(mep_pseudo_cr64_read, mep_pseudo_register_read): Ditto.
* mips-tdep.c (mips_pseudo_register_read): Ditto.
* mt-tdep.c (mt_pseudo_register_read): Ditto.
* rs6000-tdep.c (move_ev_register_func): New typedef.
(e500_move_ev_register): Use it. Change return to enum
register_status. Return the register's status.
(do_regcache_raw_read): New function.
(do_regcache_raw_write): New function.
(e500_pseudo_register_read): Change return to enum
register_status. Return the register's status. Use
do_regcache_raw_read.
(e500_pseudo_register_write): Adjust. Use do_regcache_raw_write.
(dfp_pseudo_register_read): Change return to enum register_status.
Return the register's status.
(vsx_pseudo_register_read): Ditto.
(efpr_pseudo_register_read): Ditto.
(rs6000_pseudo_register_read): Ditto.
* s390-tdep.c (s390_pseudo_register_read): Change return to enum
register_status. Return the register's status.
* sh64-tdep.c (pseudo_register_read_portions): New function.
(sh64_pseudo_register_read): Change return to enum
register_status. Use pseudo_register_read_portions. Return the
register's status.
* ia64-tdep.c (ia64_pseudo_register_read): Change return to enum
register_status. Return the register's status.
* sh-tdep.c (pseudo_register_read_portions): New function.
(sh_pseudo_register_read): Change return to enum register_status.
Use pseudo_register_read_portions. Return the register's status.
* sparc-tdep.c (sparc32_pseudo_register_read): Change return to
enum register_status. Return the register's status.
* sparc64-tdep.c (sparc64_pseudo_register_read): Ditto.
* spu-tdep.c (spu_pseudo_register_read_spu)
(spu_pseudo_register_read): Ditto.
* xtensa-tdep.c (xtensa_register_read_masked)
(xtensa_pseudo_register_read): Ditto.
* bfin-tdep.c (bfin_pseudo_register_read): Ditto.
2011-03-19 02:38:44 +08:00
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typedef enum register_status (gdbarch_pseudo_register_read_ftype) (struct gdbarch *gdbarch, struct regcache *regcache, int cookednum, gdb_byte *buf);
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extern enum register_status gdbarch_pseudo_register_read (struct gdbarch *gdbarch, struct regcache *regcache, int cookednum, gdb_byte *buf);
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2002-08-02 22:48:19 +08:00
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extern void set_gdbarch_pseudo_register_read (struct gdbarch *gdbarch, gdbarch_pseudo_register_read_ftype *pseudo_register_read);
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2001-03-24 09:26:09 +08:00
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2011-07-22 23:31:52 +08:00
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/* Read a register into a new struct value. If the register is wholly
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or partly unavailable, this should call mark_value_bytes_unavailable
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as appropriate. If this is defined, then pseudo_register_read will
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never be called. */
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extern int gdbarch_pseudo_register_read_value_p (struct gdbarch *gdbarch);
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typedef struct value * (gdbarch_pseudo_register_read_value_ftype) (struct gdbarch *gdbarch, struct regcache *regcache, int cookednum);
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extern struct value * gdbarch_pseudo_register_read_value (struct gdbarch *gdbarch, struct regcache *regcache, int cookednum);
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extern void set_gdbarch_pseudo_register_read_value (struct gdbarch *gdbarch, gdbarch_pseudo_register_read_value_ftype *pseudo_register_read_value);
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2002-08-02 22:48:19 +08:00
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extern int gdbarch_pseudo_register_write_p (struct gdbarch *gdbarch);
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2001-03-24 09:26:09 +08:00
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2005-05-14 14:07:42 +08:00
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typedef void (gdbarch_pseudo_register_write_ftype) (struct gdbarch *gdbarch, struct regcache *regcache, int cookednum, const gdb_byte *buf);
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extern void gdbarch_pseudo_register_write (struct gdbarch *gdbarch, struct regcache *regcache, int cookednum, const gdb_byte *buf);
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2002-08-02 22:48:19 +08:00
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extern void set_gdbarch_pseudo_register_write (struct gdbarch *gdbarch, gdbarch_pseudo_register_write_ftype *pseudo_register_write);
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2001-03-24 09:26:09 +08:00
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1999-08-31 09:14:27 +08:00
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extern int gdbarch_num_regs (struct gdbarch *gdbarch);
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extern void set_gdbarch_num_regs (struct gdbarch *gdbarch, int num_regs);
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1999-06-15 02:08:47 +08:00
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2000-08-01 18:31:19 +08:00
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/* This macro gives the number of pseudo-registers that live in the
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register namespace but do not get fetched or stored on the target.
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These pseudo-registers may be aliases for other registers,
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combinations of other registers, or they may be computed by GDB. */
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2000-07-24 22:25:22 +08:00
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extern int gdbarch_num_pseudo_regs (struct gdbarch *gdbarch);
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extern void set_gdbarch_num_pseudo_regs (struct gdbarch *gdbarch, int num_pseudo_regs);
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2010-12-29 00:00:13 +08:00
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/* Assemble agent expression bytecode to collect pseudo-register REG.
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Return -1 if something goes wrong, 0 otherwise. */
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extern int gdbarch_ax_pseudo_register_collect_p (struct gdbarch *gdbarch);
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typedef int (gdbarch_ax_pseudo_register_collect_ftype) (struct gdbarch *gdbarch, struct agent_expr *ax, int reg);
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extern int gdbarch_ax_pseudo_register_collect (struct gdbarch *gdbarch, struct agent_expr *ax, int reg);
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extern void set_gdbarch_ax_pseudo_register_collect (struct gdbarch *gdbarch, gdbarch_ax_pseudo_register_collect_ftype *ax_pseudo_register_collect);
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/* Assemble agent expression bytecode to push the value of pseudo-register
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REG on the interpreter stack.
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Return -1 if something goes wrong, 0 otherwise. */
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extern int gdbarch_ax_pseudo_register_push_stack_p (struct gdbarch *gdbarch);
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typedef int (gdbarch_ax_pseudo_register_push_stack_ftype) (struct gdbarch *gdbarch, struct agent_expr *ax, int reg);
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extern int gdbarch_ax_pseudo_register_push_stack (struct gdbarch *gdbarch, struct agent_expr *ax, int reg);
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extern void set_gdbarch_ax_pseudo_register_push_stack (struct gdbarch *gdbarch, gdbarch_ax_pseudo_register_push_stack_ftype *ax_pseudo_register_push_stack);
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Intel MPX bound violation handling
With Intel Memory Protection Extensions it was introduced the concept of
boundary violation. A boundary violations is presented to the inferior as
a segmentation fault having SIGCODE 3. This patch adds a
handler for a boundary violation extending the information displayed
when a bound violation is presented to the inferior. In the stop mode
case the debugger will also display the kind of violation: "upper" or
"lower", bounds and the address accessed.
On no stop mode the information will still remain unchanged. Additional
information about bound violations are not meaningful in that case user
does not know the line in which violation occurred as well.
When the segmentation fault handler is stop mode the out puts will be
changed as exemplified below.
The usual output of a segfault is:
Program received signal SIGSEGV, Segmentation fault
0x0000000000400d7c in upper (p=0x603010, a=0x603030, b=0x603050,
c=0x603070, d=0x603090, len=7) at i386-mpx-sigsegv.c:68
68 value = *(p + len);
In case it is a bound violation it will be presented as:
Program received signal SIGSEGV, Segmentation fault
Upper bound violation while accessing address 0x7fffffffc3b3
Bounds: [lower = 0x7fffffffc390, upper = 0x7fffffffc3a3]
0x0000000000400d7c in upper (p=0x603010, a=0x603030, b=0x603050,
c=0x603070, d=0x603090, len=7) at i386-mpx-sigsegv.c:68
68 value = *(p + len);
In mi mode the output of a segfault is:
*stopped,reason="signal-received",signal-name="SIGSEGV",
signal-meaning="Segmentation fault", frame={addr="0x0000000000400d7c",
func="upper",args=[{name="p", value="0x603010"},{name="a",value="0x603030"}
,{name="b",value="0x603050"}, {name="c",value="0x603070"},
{name="d",value="0x603090"},{name="len",value="7"}],
file="i386-mpx-sigsegv.c",fullname="i386-mpx-sigsegv.c",line="68"},
thread-id="1",stopped-threads="all",core="6"
in the case of a bound violation:
*stopped,reason="signal-received",signal-name="SIGSEGV",
signal-meaning="Segmentation fault",
sigcode-meaning="Upper bound violation",
lower-bound="0x603010",upper-bound="0x603023",bound-access="0x60302f",
frame={addr="0x0000000000400d7c",func="upper",args=[{name="p",
value="0x603010"},{name="a",value="0x603030"},{name="b",value="0x603050"},
{name="c",value="0x603070"},{name="d",value="0x603090"},
{name="len",value="7"}],file="i386-mpx-sigsegv.c",
fullname="i386-mpx-sigsegv.c",line="68"},thread-id="1",
stopped-threads="all",core="6"
2016-02-18 Walfred Tedeschi <walfred.tedeschi@intel.com>
gdb/ChangeLog:
* NEWS: Add entry for bound violation.
* amd64-linux-tdep.c (amd64_linux_init_abi_common):
Add handler for segmentation fault.
* gdbarch.sh (handle_segmentation_fault): New.
* gdbarch.c: Regenerate.
* gdbarch.h: Regenerate.
* i386-linux-tdep.c (i386_linux_handle_segmentation_fault): New.
(SIG_CODE_BONDARY_FAULT): New define.
(i386_linux_init_abi): Use i386_mpx_bound_violation_handler.
* i386-linux-tdep.h (i386_linux_handle_segmentation_fault) New.
* i386-tdep.c (i386_mpx_enabled): Add as external.
* i386-tdep.c (i386_mpx_enabled): Add as external.
* infrun.c (handle_segmentation_fault): New function.
(print_signal_received_reason): Use handle_segmentation_fault.
gdb/testsuite/ChangeLog:
* gdb.arch/i386-mpx-sigsegv.c: New file.
* gdb.arch/i386-mpx-sigsegv.exp: New file.
* gdb.arch/i386-mpx-simple_segv.c: New file.
* gdb.arch/i386-mpx-simple_segv.exp: New file.
gdb/doc/ChangeLog:
* gdb.texinfo (Signals): Add bound violation display hints for
a SIGSEGV.
2016-02-19 00:24:59 +08:00
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/* Some targets/architectures can do extra processing/display of
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|
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segmentation faults. E.g., Intel MPX boundary faults.
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Call the architecture dependent function to handle the fault.
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UIOUT is the output stream where the handler will place information. */
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extern int gdbarch_handle_segmentation_fault_p (struct gdbarch *gdbarch);
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typedef void (gdbarch_handle_segmentation_fault_ftype) (struct gdbarch *gdbarch, struct ui_out *uiout);
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extern void gdbarch_handle_segmentation_fault (struct gdbarch *gdbarch, struct ui_out *uiout);
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extern void set_gdbarch_handle_segmentation_fault (struct gdbarch *gdbarch, gdbarch_handle_segmentation_fault_ftype *handle_segmentation_fault);
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2002-04-07 04:50:10 +08:00
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/* GDB's standard (or well known) register numbers. These can map onto
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a real register or a pseudo (computed) register or not be defined at
|
2003-06-09 09:02:07 +08:00
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all (-1).
|
2007-06-18 Markus Deuling <deuling@de.ibm.com>
* gdbarch.sh (SP_REGNUM): Replace by gdbarch_sp_regnum.
* v850-tdep.c (v850_unwind_sp): Likewise.
* std-regs.c (value_of_builtin_frame_sp_reg): Likewise.
* stack.c (frame_info): Likewise.
* stabsread.c (define_symbol): Likewise.
* sh-tdep.c (sh_push_dummy_call_fpu, sh_push_dummy_call_nofpu)
(sh_dwarf2_frame_init_reg, sh_frame_cache, sh_frame_prev_register)
(sh_unwind_sp): Likewise.
* sh64-tdep.c (sh64_push_dummy_call, sh64_frame_cache)
(sh64_frame_prev_register, sh64_unwind_sp): Likewise.
* rs6000-tdep.c (rs6000_push_dummy_call, rs6000_unwind_dummy_id)
(rs6000_frame_cache): Likewise.
* rs6000-nat.c (store_register): Likewise.
* remote-mips.c (mips_wait): Likewise.
* procfs.c (procfs_fetch_registers, procfs_store_registers): Likewise.
* ppc-sysv-tdep.c (ppc_sysv_abi_push_dummy_call)
(ppc64_sysv_abi_push_dummy_call): Likewise.
* ppcobsd-tdep.c (ppcobsd_sigtramp_frame_cache): Likewise.
* ppcobsd-nat.c (ppcobsd_supply_pcb): Likewise.
* ppcnbsd-tdep.c (ppcnbsd_sigtramp_cache_init): Likewise.
* ppc-linux-tdep.c (ppc_linux_sigtramp_cache): Likewise.
* m32r-rom.c (m32r_supply_register): Likewise.
* frame.c (frame_sp_unwind): Likewise.
* mips-tdep.c (mips_insn16_frame_cache)
(mips_insn32_frame_cache): Likewise (comment).
* m68klinux-nat.c (supply_gregset): Likewise.
* m68k-tdep.c (m68k_get_longjmp_target): Likewise.
* ia64-tdep.c (ia64_frame_prev_register): Likewise.
* i386-tdep.c (i386_get_longjmp_target): Likewise.
* dwarf2-frame.c (dwarf2_frame_default_init_reg): Likewise.
* cris-tdep.c (cris_regnums, cris_sigcontext_addr)
(cris_sigtramp_frame_unwind_cache, cris_push_dummy_call)
(cris_scan_prologue, crisv32_scan_prologue, cris_unwind_sp)
(cris_register_type, crisv32_register_type)
(cris_dwarf2_frame_init_reg): Likewise.
* arch-utils.c (legacy_virtual_frame_pointer): Likewise.
* amd64-tdep.c (amd64_frame_prev_register): Likewise.
* amd64-linux-tdep.c (amd64_linux_sigcontext_addr): Likewise.
* libunwind-frame.c (libunwind_frame_cache): Likewise.
* gdbarch.sh (PC_REGNUM): Replace by gdbarch_pc_regnum.
* regcache.c (read_pc_pid, generic_target_write_pc): Likewise.
* xtensa-tdep.c (xtensa_register_type, xtensa_supply_gregset)
(xtensa_unwind_pc, xtensa_frame_cache, xtensa_frame_prev_register)
(xtensa_extract_return_value, xtensa_store_return_value): Likewise.
* v850-tdep.c (v850_unwind_pc): Likewise.
* stack.c (frame_info): Likewise.
* sh-tdep.c (sh_generic_show_regs, sh3_show_regs, sh2e_show_regs)
(sh2a_show_regs, sh2a_nofpu_show_regs, sh3e_show_regs)
(sh3_dsp_show_regs, sh4_show_regs, sh4_nofpu_show_regs)
(sh_dwarf2_frame_init_reg, sh_frame_prev_register, sh_unwind_pc)
(sh_dsp_show_regs): Likewise.
* shnbsd-tdep.c (shnbsd_supply_gregset)
(shnbsd_collect_gregset): Likewise.
* shnbsd-nat.c (GETREGS_SUPPLIES): Likewise.
* sh64-tdep.c (sh64_compact_reg_base_num, sh64_show_media_regs)
(sh64_frame_prev_register, sh64_unwind_pc): Likewise.
* rs6000-tdep.c (ppc_supply_gregset, ppc_collect_gregset)
(6000_register_reggroup_p, rs6000_unwind_pc)
(rs6000_frame_cache): Likewise.
* rs6000-nat.c (regmap, rs6000_fetch_inferior_registers)
(rs6000_store_inferior_registers): Likewise.
* remote-mips.c (mips_wait, mips_load): Likewise.
* procfs.c (procfs_fetch_registers, procfs_store_registers): Likewise.
* ppcobsd-tdep.c (ppcobsd_sigtramp_frame_cache): Likewise.
* ppcobsd-nat.c (ppcobsd_supply_pcb): Likewise.
* ppcnbsd-tdep.c (ppcnbsd_sigtramp_cache_init): Likewise.
* ppcnbsd-nat.c (getregs_supplies, ppcnbsd_supply_pcb): Likewise.
* ppc-linux-tdep.c (ppc_linux_sigtramp_cache): Likewise.
* ppc-linux-nat.c (ppc_register_u_addr, fetch_ppc_registers)
(store_ppc_registers, fill_gregset): Likewise.
* mips-tdep.c (mips_stub_frame_cache, mips_gdbarch_init): Likewise.
* mipsnbsd-tdep.c (mipsnbsd_supply_reg, mipsnbsd_fill_reg): Likewise.
* mipsnbsd-nat.c (getregs_supplies): Likewise.
* m68k-tdep.c (m68k_register_type, m68k_unwind_pc): Likewise.
* m68klinux-nat.c (supply_gregset): Likewise.
* irix5-nat.c (fill_gregset): Likewise.
* i386-tdep.c (i386_unwind_pc): Likewise.
* i386-linux-nat.c (i386_linux_resume): Likewise.
* frame.c (get_prev_frame_1): Likewise.
* dwarf2-frame.c (dwarf2_frame_default_init_reg): Likewise.
* dbug-rom.c (dbug_supply_register): Likewise.
* cris-tdep.c (cris_sigtramp_frame_unwind_cache, cris_scan_prologue)
(crisv32_scan_prologue, cris_unwind_pc, cris_register_size)
(cris_register_type, crisv32_register_type, crisv32_register_name)
(cris_dwarf2_frame_init_reg, find_step_target)
(cris_software_single_step, cris_supply_gregset)
(cris_regnums): Likewise.
* alpha-linux-nat.c (alpha_linux_register_u_offset): Likewise.
* aix-thread.c (special_register_p, supply_sprs64, supply_sprs32)
(fill_sprs64, fill_sprs32, store_regs_user_thread): Likewise.
* mips-linux-tdep.c (mips_linux_write_pc): Likewise.
* gdbarch.sh (PS_REGNUM): Replace by gdbarch_ps_regnum.
* dbug-rom.c (dbug_supply_register): Likewise.
* xtensa-tdep.c (xtensa_supply_gregset, xtensa_frame_cache)
(xtensa_frame_prev_register, xtensa_push_dummy_call): Likewise.
* win32-nat.c (win32_resume): Likewise.
* std-regs.c (value_of_builtin_frame_ps_reg)
(value_of_builtin_frame_pc_reg): Likewise.
* m68k-tdep.c (m68k_register_type): Likewise.
* m68klinux-nat.c (supply_gregset): Likewise.
* gdbarch.sh (FP0_REGNUM): Replace by gdbarch_fp0_regnum.
* sh-tdep.c (sh_extract_return_value_fpu, sh_store_return_value_fpu)
(sh2e_show_regs, sh2a_show_regs, sh3e_show_regs, sh4_show_regs)
(sh_sh2a_register_type, sh_sh3e_register_type, sh_sh4_register_type)
(fv_reg_base_num, dr_reg_base_num): Likewise.
* sh64-tdep.c (sh64_fv_reg_base_num, sh64_dr_reg_base_num)
(sh64_fpp_reg_base_num, sh64_compact_reg_base_num, sh64_push_dummy_call)
(sh64_extract_return_value, sh64_store_return_value)
(sh64_show_media_regs, sh64_show_compact_regs, sh64_register_type)
(sh64_do_fp_register, sh64_media_print_registers_info): Likewise.
* procfs.c (procfs_fetch_registers, procfs_store_registers)
(invalidate_cache): Likewise.
* ppc-linux-tdep.c (ppc_linux_sigtramp_cache): Likewise.
* mipsnbsd-tdep.c (mipsnbsd_supply_fpreg)
(mipsnbsd_fill_fpreg): Likewise.
* mipsnbsd-nat.c (mipsnbsd_fetch_inferior_registers)
(mipsnbsd_store_inferior_registers): Likewise.
* mips-linux-tdep.c (mips_supply_fpregset, mips_fill_fpregset)
(mips64_supply_fpregset, mips64_fill_fpregset): Likewise.
* mips-linux-nat.c (mips64_linux_register_addr): Likewise.
* m68k-tdep.c (m68k_register_type, m68k_convert_register_p): Likewise.
* m68klinux-nat.c (getfpregs_supplies, supply_fpregset)
(fill_fpregset): Likewise.
* irix5-nat.c (supply_fpregset, fill_fpregset): Likewise.
* i386-tdep.h (struct_return): Likewise (comment).
* i386-nto-tdep.c (i386nto_register_area): Likewise.
* go32-nat.c (fetch_register, go32_fetch_registers, store_register)
(go32_store_registers): Likewise.
* alpha-tdep.c (alpha_next_pc): Likewise.
* alpha-linux-nat.c (alpha_linux_register_u_offset): Likewise.
* alphabsd-nat.c (alphabsd_fetch_inferior_registers)
(alphabsd_store_inferior_registers): Likewise.
* core-regset.c (fetch_core_registers): Likewise.
* i386v4-nat.c (supply_fpregset, fill_fpregset): Likewise.
* gdbarch.c, gdbarch.h: Regenerate.
2007-06-19 01:45:26 +08:00
|
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gdbarch_sp_regnum will hopefully be replaced by UNWIND_SP. */
|
2002-04-07 10:16:46 +08:00
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1999-08-31 09:14:27 +08:00
|
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extern int gdbarch_sp_regnum (struct gdbarch *gdbarch);
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extern void set_gdbarch_sp_regnum (struct gdbarch *gdbarch, int sp_regnum);
|
1999-06-15 02:08:47 +08:00
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1999-08-31 09:14:27 +08:00
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extern int gdbarch_pc_regnum (struct gdbarch *gdbarch);
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extern void set_gdbarch_pc_regnum (struct gdbarch *gdbarch, int pc_regnum);
|
1999-06-15 02:08:47 +08:00
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2002-04-07 04:50:10 +08:00
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extern int gdbarch_ps_regnum (struct gdbarch *gdbarch);
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extern void set_gdbarch_ps_regnum (struct gdbarch *gdbarch, int ps_regnum);
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2000-05-11 01:38:16 +08:00
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extern int gdbarch_fp0_regnum (struct gdbarch *gdbarch);
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extern void set_gdbarch_fp0_regnum (struct gdbarch *gdbarch, int fp0_regnum);
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2000-12-04 12:01:16 +08:00
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/* Convert stab register number (from `r' declaration) to a gdb REGNUM. */
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2007-12-07 00:33:00 +08:00
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typedef int (gdbarch_stab_reg_to_regnum_ftype) (struct gdbarch *gdbarch, int stab_regnr);
|
2000-12-04 12:01:16 +08:00
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extern int gdbarch_stab_reg_to_regnum (struct gdbarch *gdbarch, int stab_regnr);
|
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extern void set_gdbarch_stab_reg_to_regnum (struct gdbarch *gdbarch, gdbarch_stab_reg_to_regnum_ftype *stab_reg_to_regnum);
|
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/* Provide a default mapping from a ecoff register number to a gdb REGNUM. */
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2007-12-07 00:33:00 +08:00
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typedef int (gdbarch_ecoff_reg_to_regnum_ftype) (struct gdbarch *gdbarch, int ecoff_regnr);
|
2000-12-04 12:01:16 +08:00
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extern int gdbarch_ecoff_reg_to_regnum (struct gdbarch *gdbarch, int ecoff_regnr);
|
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extern void set_gdbarch_ecoff_reg_to_regnum (struct gdbarch *gdbarch, gdbarch_ecoff_reg_to_regnum_ftype *ecoff_reg_to_regnum);
|
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|
2003-09-19 06:39:21 +08:00
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|
/* Convert from an sdb register number to an internal gdb register number. */
|
2000-12-04 12:01:16 +08:00
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|
2007-12-07 00:33:00 +08:00
|
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|
typedef int (gdbarch_sdb_reg_to_regnum_ftype) (struct gdbarch *gdbarch, int sdb_regnr);
|
2000-12-04 12:01:16 +08:00
|
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|
extern int gdbarch_sdb_reg_to_regnum (struct gdbarch *gdbarch, int sdb_regnr);
|
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|
extern void set_gdbarch_sdb_reg_to_regnum (struct gdbarch *gdbarch, gdbarch_sdb_reg_to_regnum_ftype *sdb_reg_to_regnum);
|
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|
2015-10-27 07:05:21 +08:00
|
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|
/* Provide a default mapping from a DWARF2 register number to a gdb REGNUM.
|
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|
|
Return -1 for bad REGNUM. Note: Several targets get this wrong. */
|
* gdbarch.sh: Delete dwarf_reg_to_regnum.
* gdbarch.c, gdbarch.h: Regenerated.
* amd64-tdep.c, arm-tdep.c, h8300-tdep.c, hppa-linux-tdep.c,
hppa-tdep.c, i386-tdep.c, m32c-tdep.c, m68k-tdep.c, mips-tdep.c,
s390-tdep.c, xtensa-tdep.c: Do not set dwarf_reg_to_regnum.
* gdbint.texinfo (Target Conditionals): Delete entry for
gdbarch_dwarf_reg_to_regnum.
2008-05-16 08:27:24 +08:00
|
|
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|
2007-12-07 00:33:00 +08:00
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typedef int (gdbarch_dwarf2_reg_to_regnum_ftype) (struct gdbarch *gdbarch, int dwarf2_regnr);
|
2000-12-04 12:01:16 +08:00
|
|
|
extern int gdbarch_dwarf2_reg_to_regnum (struct gdbarch *gdbarch, int dwarf2_regnr);
|
|
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|
extern void set_gdbarch_dwarf2_reg_to_regnum (struct gdbarch *gdbarch, gdbarch_dwarf2_reg_to_regnum_ftype *dwarf2_reg_to_regnum);
|
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|
2007-11-02 Markus Deuling <deuling@de.ibm.com>
* gdbarch.sh (register_name): Add gdbarch parameter.
* gdbarch.{c,h}: Regenerate.
* target-descriptions.c (tdesc_register_name): Add gdbarch parameter.
(tdesc_register_name): Replace current_gdbarch by gdbarch.
* target-descriptions.h (tdesc_register_name): Add gdbarch parameter.
* xstormy16-tdep.c (xstormy16_register_name): Add gdbarch parameter.
* vax-tdep.c (vax_register_name): Add gdbarch parameter.
* spu-tdep.c (spu_register_name): Add gdbarch parameter.
* s390-tdep.c (s390_register_name): Add gdbarch parameter.
* mt-tdep.c (mt_register_name): Add gdbarch parameter.
(mt_registers_info): Replace current_gdbarch by gdbarch.
(mt_register_reggroup_p): Add gdbarch to mt_register_name call.
* mips-tdep.c (mips_register_name): Add gdbarch parameter. Replace
current_gdbarch by gdbarch.
(mips_register_name): Add gdbarch to tdesc_register_name call.
* mep-tdep.c (mep_register_name): Add gdbarch parameter. Replace
current_gdbarch by gdbarch.
(mep_register_reggroup_p): Add gdbarch to mep_register_name call.
* m32c-tdep.c (m32c_register_name): Add gdbarch parameter. Replace
current_gdbarch by gdbarch.
* m88k-tdep.c (m88k_register_name): Add gdbarch parameter.
* m68k-tdep.c (m68k_register_name): Add gdbarch parameter.
* m32r-tdep.c (m32r_register_name): Add gdbarch parameter.
(m32r_frame_unwind_cache): Use get_frame_arch to get at the current
architecture by frame_info.
* iq2000-tdep.c (iq2000_register_name): Add gdbarch parameter.
* ia64-tdep.c (ia64_register_name): Add gdbarch parameter.
* hppa-tdep.c (hppa32_register_name, hppa64_register_name): Add gdbarch
parameter.
* h8300-tdep.c (h8300_register_name, h8300s_register_name)
(h8300sx_register_name): Add gdbarch parameter.
* cris-tdep.c (cris_register_name, crisv32_register_name): Add
gdbarch parameter. Replace current_gdbarch by gdbarch.
(cris_gdbarch_init): Replace current_gdbarch by gdbarch (comment).
* avr-tdep.c (avr_register_name): Add gdbarch parameter.
* arm-tdep.c (arm_register_name): Add gdbarch paramete
* amd64-tdep.c (amd64_register_name): Add gdbarch parameter. Update
caller.
* amd64-tdep.h (amd64_register_name): Add gdbarch parameter.
* amd64-linux-tdep.c (amd64_linux_register_name): Add gdbarch parameter.
* alpha-tdep.c (alpha_register_name): Add gdbarch parameter.
(alpha_cannot_fetch_register, alpha_cannot_store_register): Update call
of alpha_register_name.
* frv-tdep.c (frv_register_name): Add gdbarch parameter.
* i386-tdep.c (i386_register_name): Add gdbarch parameter. Replace
current_gdbarch by gdbarch.
(i386_register_type): Replace ?current_gdbarch by gdbarch.
* i386-tdep.h (i386_register_name): Add gdbarch parameter.
* i386-linux-tdep.c (i386_linux_register_name): Add gdbarch parameter.
* m68hc11-tdep.c (m68hc11_register_name): Add gdbarch parameter.
(m68hc11_register_reggroup_p): Add gdbarch to call of
m68hc11_register_name.
* mn10300-tdep.c (mn10300_generic_register_name, am33_register_name)
(am33_2_register_name): Add gdbarch parameter.
(mn10300_frame_unwind_cache): Use get_frame_arch to get at the current
architecture by frame_info.
(mn10300_dump_tdep): Replace current_gdbarch by gdbarch.
* rs6000-tdep.c (rs6000_register_name): Add gdbarch parameter. Replace
current_gdbarch by gdbarch.
* score-tdep.c (score_register_name): Add gdbarch parameter.
(score_return_value, score_push_dummy_call): Replace current_gdbarch
by gdbarch.
* sh64-tdep.c (sh64_register_name): Add gdbarch parameter.
(sh64_compact_reg_base_num, sh64_register_convert_to_virtual)
(sh64_register_convert_to_raw, sh64_fv_reg_base_num)
(sh64_dr_reg_base_num, sh64_fpp_reg_base_num): Add gdbarch parameter
and update caller. Replace current_gdbarch by gdbarch.
(sh64_extract_return_value, sh64_store_return_value): Use
get_regcache_arch to get at the current architecture by regcache.
* sh-tdep.c (sh_sh_register_name, sh_sh3_register_name)
(sh_sh3e_register_name, sh_sh2e_register_name, sh_sh2a_register_name)
(sh_sh2a_nofpu_register_name, sh_sh_dsp_register_name)
(sh_sh3_dsp_register_name, sh_sh4_register_name)
(sh_sh4_nofpu_register_name, sh_sh4al_dsp_register_name): Add gdbarch
parameter.
(fv_reg_base_num, dr_reg_base_num, sh_justify_value_in_reg)
(sh_next_flt_argreg): Add gdbarch parameter and update caller. Replace
current_gdbarch by gdbarch.
(sh_extract_return_value_fpu, sh_store_return_value_fpu): Use
get_regcache_arch to get at the current architecture by regcache.
* sparc-tdep.c (sparc32_register_name): Add gdbarch parameter.
* sparc64-tdep.c (sparc64_register_name): Add gdbarch parameter.
* v850-tdep.c (v850_register_name, v850e_register_name): Add gdbarch
parameter.
(v850_unwind_sp, v850_unwind_pc): Replace current_gdbarch by gdbarch.
* xtensa-tdep.c (xtensa_register_name): Add gdbarch parameter. Replace
current_gdbarch by gdbarch.
(xtensa_pseudo_register_read, xtensa_pseudo_register_write)
(xtensa_frame_prev_register): Add gdbarch parameter to
xtensa_register_name call.
2007-11-02 22:27:15 +08:00
|
|
|
typedef const char * (gdbarch_register_name_ftype) (struct gdbarch *gdbarch, int regnr);
|
2002-06-18 07:32:36 +08:00
|
|
|
extern const char * gdbarch_register_name (struct gdbarch *gdbarch, int regnr);
|
1999-08-31 09:14:27 +08:00
|
|
|
extern void set_gdbarch_register_name (struct gdbarch *gdbarch, gdbarch_register_name_ftype *register_name);
|
1999-06-15 02:08:47 +08:00
|
|
|
|
2007-01-22 01:37:51 +08:00
|
|
|
/* Return the type of a register specified by the architecture. Only
|
|
|
|
|
the register cache should call this function directly; others should
|
|
|
|
|
use "register_type". */
|
2003-06-13 12:40:34 +08:00
|
|
|
|
|
|
|
|
extern int gdbarch_register_type_p (struct gdbarch *gdbarch);
|
|
|
|
|
|
|
|
|
|
typedef struct type * (gdbarch_register_type_ftype) (struct gdbarch *gdbarch, int reg_nr);
|
|
|
|
|
extern struct type * gdbarch_register_type (struct gdbarch *gdbarch, int reg_nr);
|
|
|
|
|
extern void set_gdbarch_register_type (struct gdbarch *gdbarch, gdbarch_register_type_ftype *register_type);
|
|
|
|
|
|
Convert frame unwinders to use the current frame and
"struct value".
* frame.c (frame_debug): Make global.
(get_frame_id): Pass this frame to unwinder routines.
(frame_pc_unwind): Remove unused unwind->prev_pc support.
(do_frame_register_read): Do not discard the return value of
frame_register_read.
(frame_register_unwind): Remove debug messages. Use
frame_unwind_register_value.
(frame_unwind_register_value, get_frame_register_value): New
functions.
(create_new_frame, get_frame_base_address, get_frame_locals_address)
(get_frame_args_address, get_frame_type): Pass this frame to
unwinder routines.
(frame_cleanup_after_sniffer, frame_prepare_for_sniffer): New
functions.
* frame.h: Update comments.
(frame_debug, frame_unwind_register_value, get_frame_register_value)
(frame_prepare_for_sniffer): Declare.
* frame-unwind.h: Update comments and parameter names.
(default_frame_sniffer): Declare.
(frame_prev_register_ftype): Return a struct value *.
(struct frame_unwind): Remove prev_pc member.
(frame_unwind_sniffer_ftype, frame_unwind_append_sniffer): Delete.
(frame_unwind_append_unwinder, frame_unwind_got_optimized)
(frame_unwind_got_register, frame_unwind_got_memory)
(frame_unwind_got_constant, frame_unwind_got_address): Declare.
* frame-base.h: Update comments and parameter names.
* valops.c (value_fetch_lazy): Use get_frame_register_value. Iterate
if necessary. Add debugging output.
* sentinel-frame.c (sentinel_frame_prev_register)
(sentinel_frame_this_id): Update for new signature.
(sentinel_frame_prev_pc): Delete.
(sentinel_frame_unwinder): Remove prev_pc.
* ia64-tdep.c (ia64_libunwind_frame_unwind): Do not initialize
prev_pc.
* libunwind-frame.c (libunwind_frame_unwind): Likewise.
* frame-unwind.c (struct frame_unwind_table_entry): Remove sniffer.
(frame_unwind_append_sniffer): Delete.
(frame_unwind_append_unwinder): New function.
(frame_unwind_find_by_frame): Take this frame. Only use sniffers
from unwinders. Use frame_prepare_for_sniffer.
(default_frame_sniffer, frame_unwind_got_optimized)
(frame_unwind_got_register, frame_unwind_got_memory)
(frame_unwind_got_constant, frame_unwind_got_address): New functions.
* dummy-frame.c (dummy_frame_sniffer): Use gdbarch_dummy_id.
(dummy_frame_prev_register, dummy_frame_this_id): Update for new
signature.
* gdbarch.sh: Replace unwind_dummy_id with dummy_id.
* gdbarch.c, gdbarch.c: Regenerated.
* frame-base.c (default_frame_base_address)
(default_frame_locals_address, default_frame_args_address): Update
for new signature.
(frame_base_find_by_frame): Pass this frame to unwinder routines.
* infcall.c (call_function_by_hand): Update comments.
* Makefile.in (frame-unwind.o): Update dependencies.
* gdbint.texinfo (Stack Frames): New chapter.
(Algorithms): Move Frames text to the new chapter.
(Target Conditionals): Delete SAVE_DUMMY_FRAME_TOS. Document
gdbarch_dummy_id instead of gdbarch_unwind_dummy_id.
2008-05-01 05:16:46 +08:00
|
|
|
extern int gdbarch_dummy_id_p (struct gdbarch *gdbarch);
|
2003-06-14 06:18:49 +08:00
|
|
|
|
Convert frame unwinders to use the current frame and
"struct value".
* frame.c (frame_debug): Make global.
(get_frame_id): Pass this frame to unwinder routines.
(frame_pc_unwind): Remove unused unwind->prev_pc support.
(do_frame_register_read): Do not discard the return value of
frame_register_read.
(frame_register_unwind): Remove debug messages. Use
frame_unwind_register_value.
(frame_unwind_register_value, get_frame_register_value): New
functions.
(create_new_frame, get_frame_base_address, get_frame_locals_address)
(get_frame_args_address, get_frame_type): Pass this frame to
unwinder routines.
(frame_cleanup_after_sniffer, frame_prepare_for_sniffer): New
functions.
* frame.h: Update comments.
(frame_debug, frame_unwind_register_value, get_frame_register_value)
(frame_prepare_for_sniffer): Declare.
* frame-unwind.h: Update comments and parameter names.
(default_frame_sniffer): Declare.
(frame_prev_register_ftype): Return a struct value *.
(struct frame_unwind): Remove prev_pc member.
(frame_unwind_sniffer_ftype, frame_unwind_append_sniffer): Delete.
(frame_unwind_append_unwinder, frame_unwind_got_optimized)
(frame_unwind_got_register, frame_unwind_got_memory)
(frame_unwind_got_constant, frame_unwind_got_address): Declare.
* frame-base.h: Update comments and parameter names.
* valops.c (value_fetch_lazy): Use get_frame_register_value. Iterate
if necessary. Add debugging output.
* sentinel-frame.c (sentinel_frame_prev_register)
(sentinel_frame_this_id): Update for new signature.
(sentinel_frame_prev_pc): Delete.
(sentinel_frame_unwinder): Remove prev_pc.
* ia64-tdep.c (ia64_libunwind_frame_unwind): Do not initialize
prev_pc.
* libunwind-frame.c (libunwind_frame_unwind): Likewise.
* frame-unwind.c (struct frame_unwind_table_entry): Remove sniffer.
(frame_unwind_append_sniffer): Delete.
(frame_unwind_append_unwinder): New function.
(frame_unwind_find_by_frame): Take this frame. Only use sniffers
from unwinders. Use frame_prepare_for_sniffer.
(default_frame_sniffer, frame_unwind_got_optimized)
(frame_unwind_got_register, frame_unwind_got_memory)
(frame_unwind_got_constant, frame_unwind_got_address): New functions.
* dummy-frame.c (dummy_frame_sniffer): Use gdbarch_dummy_id.
(dummy_frame_prev_register, dummy_frame_this_id): Update for new
signature.
* gdbarch.sh: Replace unwind_dummy_id with dummy_id.
* gdbarch.c, gdbarch.c: Regenerated.
* frame-base.c (default_frame_base_address)
(default_frame_locals_address, default_frame_args_address): Update
for new signature.
(frame_base_find_by_frame): Pass this frame to unwinder routines.
* infcall.c (call_function_by_hand): Update comments.
* Makefile.in (frame-unwind.o): Update dependencies.
* gdbint.texinfo (Stack Frames): New chapter.
(Algorithms): Move Frames text to the new chapter.
(Target Conditionals): Delete SAVE_DUMMY_FRAME_TOS. Document
gdbarch_dummy_id instead of gdbarch_unwind_dummy_id.
2008-05-01 05:16:46 +08:00
|
|
|
typedef struct frame_id (gdbarch_dummy_id_ftype) (struct gdbarch *gdbarch, struct frame_info *this_frame);
|
|
|
|
|
extern struct frame_id gdbarch_dummy_id (struct gdbarch *gdbarch, struct frame_info *this_frame);
|
|
|
|
|
extern void set_gdbarch_dummy_id (struct gdbarch *gdbarch, gdbarch_dummy_id_ftype *dummy_id);
|
2003-06-14 06:18:49 +08:00
|
|
|
|
Convert frame unwinders to use the current frame and
"struct value".
* frame.c (frame_debug): Make global.
(get_frame_id): Pass this frame to unwinder routines.
(frame_pc_unwind): Remove unused unwind->prev_pc support.
(do_frame_register_read): Do not discard the return value of
frame_register_read.
(frame_register_unwind): Remove debug messages. Use
frame_unwind_register_value.
(frame_unwind_register_value, get_frame_register_value): New
functions.
(create_new_frame, get_frame_base_address, get_frame_locals_address)
(get_frame_args_address, get_frame_type): Pass this frame to
unwinder routines.
(frame_cleanup_after_sniffer, frame_prepare_for_sniffer): New
functions.
* frame.h: Update comments.
(frame_debug, frame_unwind_register_value, get_frame_register_value)
(frame_prepare_for_sniffer): Declare.
* frame-unwind.h: Update comments and parameter names.
(default_frame_sniffer): Declare.
(frame_prev_register_ftype): Return a struct value *.
(struct frame_unwind): Remove prev_pc member.
(frame_unwind_sniffer_ftype, frame_unwind_append_sniffer): Delete.
(frame_unwind_append_unwinder, frame_unwind_got_optimized)
(frame_unwind_got_register, frame_unwind_got_memory)
(frame_unwind_got_constant, frame_unwind_got_address): Declare.
* frame-base.h: Update comments and parameter names.
* valops.c (value_fetch_lazy): Use get_frame_register_value. Iterate
if necessary. Add debugging output.
* sentinel-frame.c (sentinel_frame_prev_register)
(sentinel_frame_this_id): Update for new signature.
(sentinel_frame_prev_pc): Delete.
(sentinel_frame_unwinder): Remove prev_pc.
* ia64-tdep.c (ia64_libunwind_frame_unwind): Do not initialize
prev_pc.
* libunwind-frame.c (libunwind_frame_unwind): Likewise.
* frame-unwind.c (struct frame_unwind_table_entry): Remove sniffer.
(frame_unwind_append_sniffer): Delete.
(frame_unwind_append_unwinder): New function.
(frame_unwind_find_by_frame): Take this frame. Only use sniffers
from unwinders. Use frame_prepare_for_sniffer.
(default_frame_sniffer, frame_unwind_got_optimized)
(frame_unwind_got_register, frame_unwind_got_memory)
(frame_unwind_got_constant, frame_unwind_got_address): New functions.
* dummy-frame.c (dummy_frame_sniffer): Use gdbarch_dummy_id.
(dummy_frame_prev_register, dummy_frame_this_id): Update for new
signature.
* gdbarch.sh: Replace unwind_dummy_id with dummy_id.
* gdbarch.c, gdbarch.c: Regenerated.
* frame-base.c (default_frame_base_address)
(default_frame_locals_address, default_frame_args_address): Update
for new signature.
(frame_base_find_by_frame): Pass this frame to unwinder routines.
* infcall.c (call_function_by_hand): Update comments.
* Makefile.in (frame-unwind.o): Update dependencies.
* gdbint.texinfo (Stack Frames): New chapter.
(Algorithms): Move Frames text to the new chapter.
(Target Conditionals): Delete SAVE_DUMMY_FRAME_TOS. Document
gdbarch_dummy_id instead of gdbarch_unwind_dummy_id.
2008-05-01 05:16:46 +08:00
|
|
|
/* Implement DUMMY_ID and PUSH_DUMMY_CALL, then delete
|
2007-06-19 02:37:12 +08:00
|
|
|
deprecated_fp_regnum. */
|
2003-06-14 06:18:49 +08:00
|
|
|
|
|
|
|
|
extern int gdbarch_deprecated_fp_regnum (struct gdbarch *gdbarch);
|
|
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|
|
extern void set_gdbarch_deprecated_fp_regnum (struct gdbarch *gdbarch, int deprecated_fp_regnum);
|
|
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|
2003-06-14 07:07:06 +08:00
|
|
|
extern int gdbarch_push_dummy_call_p (struct gdbarch *gdbarch);
|
|
|
|
|
|
2004-06-07 10:02:55 +08:00
|
|
|
typedef CORE_ADDR (gdbarch_push_dummy_call_ftype) (struct gdbarch *gdbarch, struct value *function, struct regcache *regcache, CORE_ADDR bp_addr, int nargs, struct value **args, CORE_ADDR sp, int struct_return, CORE_ADDR struct_addr);
|
|
|
|
|
extern CORE_ADDR gdbarch_push_dummy_call (struct gdbarch *gdbarch, struct value *function, struct regcache *regcache, CORE_ADDR bp_addr, int nargs, struct value **args, CORE_ADDR sp, int struct_return, CORE_ADDR struct_addr);
|
2003-06-14 07:07:06 +08:00
|
|
|
extern void set_gdbarch_push_dummy_call (struct gdbarch *gdbarch, gdbarch_push_dummy_call_ftype *push_dummy_call);
|
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extern int gdbarch_call_dummy_location (struct gdbarch *gdbarch);
|
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|
extern void set_gdbarch_call_dummy_location (struct gdbarch *gdbarch, int call_dummy_location);
|
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|
extern int gdbarch_push_dummy_code_p (struct gdbarch *gdbarch);
|
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|
2007-10-12 23:34:45 +08:00
|
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|
typedef CORE_ADDR (gdbarch_push_dummy_code_ftype) (struct gdbarch *gdbarch, CORE_ADDR sp, CORE_ADDR funaddr, struct value **args, int nargs, struct type *value_type, CORE_ADDR *real_pc, CORE_ADDR *bp_addr, struct regcache *regcache);
|
|
|
|
|
extern CORE_ADDR gdbarch_push_dummy_code (struct gdbarch *gdbarch, CORE_ADDR sp, CORE_ADDR funaddr, struct value **args, int nargs, struct type *value_type, CORE_ADDR *real_pc, CORE_ADDR *bp_addr, struct regcache *regcache);
|
2003-06-14 07:07:06 +08:00
|
|
|
extern void set_gdbarch_push_dummy_code (struct gdbarch *gdbarch, gdbarch_push_dummy_code_ftype *push_dummy_code);
|
|
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|
|
Skip unwritable frames in command "finish"
Nowadays, GDB can't insert breakpoint on the return address of the
exception handler on ARM M-profile, because the address is a magic
one 0xfffffff9,
(gdb) bt
#0 CT32B1_IRQHandler () at ../src/timer.c:67
#1 <signal handler called>
#2 main () at ../src/timer.c:127
(gdb) info frame
Stack level 0, frame at 0x200ffa8:
pc = 0x4ec in CT32B1_IRQHandler (../src/timer.c:67); saved pc = 0xfffffff9
called by frame at 0x200ffc8
source language c.
Arglist at 0x200ffa0, args:
Locals at 0x200ffa0, Previous frame's sp is 0x200ffa8
Saved registers:
r7 at 0x200ffa0, lr at 0x200ffa4
(gdb) x/x 0xfffffff9
0xfffffff9: Cannot access memory at address 0xfffffff9
(gdb) finish
Run till exit from #0 CT32B1_IRQHandler () at ../src/timer.c:67
Ed:15: Target error from Set break/watch: Et:96: Pseudo-address (0xFFFFFFxx) for EXC_RETURN is invalid (GDB error?)
Warning:
Cannot insert hardware breakpoint 0.
Could not insert hardware breakpoints:
You may have requested too many hardware breakpoints/watchpoints.
Command aborted.
even some debug probe can't set hardware breakpoint on the magic
address too,
(gdb) hbreak *0xfffffff9
Hardware assisted breakpoint 2 at 0xfffffff9
(gdb) c
Continuing.
Ed:15: Target error from Set break/watch: Et:96: Pseudo-address (0xFFFFFFxx) for EXC_RETURN is invalid (GDB error?)
Warning:
Cannot insert hardware breakpoint 2.
Could not insert hardware breakpoints:
You may have requested too many hardware breakpoints/watchpoints.
Command aborted.
The problem described above is quite similar to PR 8841, in which GDB
can't set breakpoint on signal trampoline, which is mapped to a read-only
page by kernel. The rationale of this patch is to skip "unwritable"
frames when looking for caller frames in command "finish", and a new
gdbarch method code_of_frame_writable is added. This patch fixes
the problem on ARM cortex-m target, but it can be used to fix
PR 8841 too.
gdb:
2016-05-10 Yao Qi <yao.qi@arm.com>
* arch-utils.c (default_code_of_frame_writable): New function.
* arch-utils.h (default_code_of_frame_writable): Declare.
* arm-tdep.c (arm_code_of_frame_writable): New function.
(arm_gdbarch_init): Install gdbarch method
code_of_frame_writable if the target is M-profile.
* frame.c (skip_unwritable_frames): New function.
* frame.h (skip_unwritable_frames): Declare.
* gdbarch.sh (code_of_frame_writable): New.
* gdbarch.c, gdbarch.h: Re-generated.
* infcmd.c (finish_command): Call skip_unwritable_frames.
2016-05-24 00:32:56 +08:00
|
|
|
/* Return true if the code of FRAME is writable. */
|
|
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|
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|
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|
|
typedef int (gdbarch_code_of_frame_writable_ftype) (struct gdbarch *gdbarch, struct frame_info *frame);
|
|
|
|
|
extern int gdbarch_code_of_frame_writable (struct gdbarch *gdbarch, struct frame_info *frame);
|
|
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|
|
extern void set_gdbarch_code_of_frame_writable (struct gdbarch *gdbarch, gdbarch_code_of_frame_writable_ftype *code_of_frame_writable);
|
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|
2002-08-22 00:34:10 +08:00
|
|
|
typedef void (gdbarch_print_registers_info_ftype) (struct gdbarch *gdbarch, struct ui_file *file, struct frame_info *frame, int regnum, int all);
|
|
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|
|
extern void gdbarch_print_registers_info (struct gdbarch *gdbarch, struct ui_file *file, struct frame_info *frame, int regnum, int all);
|
|
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|
|
extern void set_gdbarch_print_registers_info (struct gdbarch *gdbarch, gdbarch_print_registers_info_ftype *print_registers_info);
|
|
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|
2002-08-16 07:41:20 +08:00
|
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|
typedef void (gdbarch_print_float_info_ftype) (struct gdbarch *gdbarch, struct ui_file *file, struct frame_info *frame, const char *args);
|
|
|
|
|
extern void gdbarch_print_float_info (struct gdbarch *gdbarch, struct ui_file *file, struct frame_info *frame, const char *args);
|
2002-02-06 21:00:49 +08:00
|
|
|
extern void set_gdbarch_print_float_info (struct gdbarch *gdbarch, gdbarch_print_float_info_ftype *print_float_info);
|
|
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|
2002-08-16 08:27:46 +08:00
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|
extern int gdbarch_print_vector_info_p (struct gdbarch *gdbarch);
|
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|
typedef void (gdbarch_print_vector_info_ftype) (struct gdbarch *gdbarch, struct ui_file *file, struct frame_info *frame, const char *args);
|
|
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|
extern void gdbarch_print_vector_info (struct gdbarch *gdbarch, struct ui_file *file, struct frame_info *frame, const char *args);
|
|
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|
extern void set_gdbarch_print_vector_info (struct gdbarch *gdbarch, gdbarch_print_vector_info_ftype *print_vector_info);
|
|
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|
2000-08-02 19:05:50 +08:00
|
|
|
/* MAP a GDB RAW register number onto a simulator register number. See
|
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|
|
also include/...-sim.h. */
|
|
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|
2007-11-19 13:06:24 +08:00
|
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|
typedef int (gdbarch_register_sim_regno_ftype) (struct gdbarch *gdbarch, int reg_nr);
|
2000-08-02 19:05:50 +08:00
|
|
|
extern int gdbarch_register_sim_regno (struct gdbarch *gdbarch, int reg_nr);
|
|
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|
|
extern void set_gdbarch_register_sim_regno (struct gdbarch *gdbarch, gdbarch_register_sim_regno_ftype *register_sim_regno);
|
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|
2007-11-16 12:56:45 +08:00
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|
|
typedef int (gdbarch_cannot_fetch_register_ftype) (struct gdbarch *gdbarch, int regnum);
|
2001-06-16 07:50:46 +08:00
|
|
|
extern int gdbarch_cannot_fetch_register (struct gdbarch *gdbarch, int regnum);
|
|
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|
extern void set_gdbarch_cannot_fetch_register (struct gdbarch *gdbarch, gdbarch_cannot_fetch_register_ftype *cannot_fetch_register);
|
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|
2007-11-16 12:56:45 +08:00
|
|
|
typedef int (gdbarch_cannot_store_register_ftype) (struct gdbarch *gdbarch, int regnum);
|
2001-06-16 07:50:46 +08:00
|
|
|
extern int gdbarch_cannot_store_register (struct gdbarch *gdbarch, int regnum);
|
|
|
|
|
extern void set_gdbarch_cannot_store_register (struct gdbarch *gdbarch, gdbarch_cannot_store_register_ftype *cannot_store_register);
|
|
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|
|
|
2013-10-17 14:11:22 +08:00
|
|
|
/* Determine the address where a longjmp will land and save this address
|
|
|
|
|
in PC. Return nonzero on success.
|
|
|
|
|
|
|
|
|
|
FRAME corresponds to the longjmp frame. */
|
2002-02-18 21:35:31 +08:00
|
|
|
|
|
|
|
|
extern int gdbarch_get_longjmp_target_p (struct gdbarch *gdbarch);
|
1999-06-15 02:08:47 +08:00
|
|
|
|
2007-06-16 06:41:13 +08:00
|
|
|
typedef int (gdbarch_get_longjmp_target_ftype) (struct frame_info *frame, CORE_ADDR *pc);
|
|
|
|
|
extern int gdbarch_get_longjmp_target (struct gdbarch *gdbarch, struct frame_info *frame, CORE_ADDR *pc);
|
2003-06-14 07:07:06 +08:00
|
|
|
extern void set_gdbarch_get_longjmp_target (struct gdbarch *gdbarch, gdbarch_get_longjmp_target_ftype *get_longjmp_target);
|
1999-06-15 02:08:47 +08:00
|
|
|
|
1999-08-31 09:14:27 +08:00
|
|
|
extern int gdbarch_believe_pcc_promotion (struct gdbarch *gdbarch);
|
|
|
|
|
extern void set_gdbarch_believe_pcc_promotion (struct gdbarch *gdbarch, int believe_pcc_promotion);
|
1999-06-15 02:08:47 +08:00
|
|
|
|
2007-11-09 13:32:19 +08:00
|
|
|
typedef int (gdbarch_convert_register_p_ftype) (struct gdbarch *gdbarch, int regnum, struct type *type);
|
2003-06-14 Andrew Cagney <cagney@redhat.com>
Mark Kettenis <kettenis@gnu.org>
* gdbarch.sh (CONVERT_REGISTER_P): Add "type" parameter.
(REGISTER_TO_VALUE, VALUE_TO_REGISTER): Replace raw buffer
parameter with "frame".
* gdbarch.h, gdbarch.c: Re-generate.
* frame.h (put_frame_register): Declare.
* frame.c (put_frame_register): New function.
* arch-utils.c (legacy_convert_register_p): Add "type" parameter.
(legacy_register_to_value): Rewrite, use "frame" to get the
register value.
(legacy_value_to_register): Rewrite, use "frame" to find the
register's location before storing.
* arch-utils.h (legacy_convert_register_p): Update.
(legacy_register_to_value, legacy_value_to_register): Update.
* findvar.c (value_from_register): Rewrite, eliminate use of
REGISTER_CONVERT_TO_TYPE, pass "type" to CONVERT_REGISTER_P, pass
"frame" to REGISTER_TO_VALUE.
* valops.c (value_assign): Move the CONVERT_REGISTER code to the
lval_reg_frame_relative + lval_register branch of the switch. Do
not use REGISTER_CONVERT_FROM_TYPE. Use put_frame_register.
* i386-tdep.c (I386_EBX_REGNUM, I386_ECX_REGNUM, I386_ESI_REGNUM,
I386_EDI_REGNUM): New defines.
(i386_next_regnum, i386_convert_register_p,
i386_register_to_value, i386_value_to_register): New functions.
(i386_register_convertible, i386_register_convert_to_virtual,
i386_convert_to_raw): Remove functions.
(i386_gdbarch_init): Set convert_register_p, register_to_value and
value_to_register instead of register_convertible,
register_convert_to_virtual and register_convert_to_raw.
* mips-tdep.c (mips_convert_register_p): New function.
(mips_value_to_register): Replace mips_register_convert_from_type.
(mips_register_to_value): Replace mips_register_convert_to_type.
(mips_gdbarch_init): Set conver_register_p, value_to_register and
register_to_value.
* alpha-tdep.c (alpha_convert_register_p): Update.
(alpha_value_to_register): Update, store the register.
(alpha_register_to_value): Update, fetch the register.
2003-06-15 06:35:25 +08:00
|
|
|
extern int gdbarch_convert_register_p (struct gdbarch *gdbarch, int regnum, struct type *type);
|
2002-05-12 11:09:12 +08:00
|
|
|
extern void set_gdbarch_convert_register_p (struct gdbarch *gdbarch, gdbarch_convert_register_p_ftype *convert_register_p);
|
|
|
|
|
|
2011-03-19 02:42:41 +08:00
|
|
|
typedef int (gdbarch_register_to_value_ftype) (struct frame_info *frame, int regnum, struct type *type, gdb_byte *buf, int *optimizedp, int *unavailablep);
|
|
|
|
|
extern int gdbarch_register_to_value (struct gdbarch *gdbarch, struct frame_info *frame, int regnum, struct type *type, gdb_byte *buf, int *optimizedp, int *unavailablep);
|
2002-05-12 11:09:12 +08:00
|
|
|
extern void set_gdbarch_register_to_value (struct gdbarch *gdbarch, gdbarch_register_to_value_ftype *register_to_value);
|
|
|
|
|
|
2005-05-14 14:07:42 +08:00
|
|
|
typedef void (gdbarch_value_to_register_ftype) (struct frame_info *frame, int regnum, struct type *type, const gdb_byte *buf);
|
|
|
|
|
extern void gdbarch_value_to_register (struct gdbarch *gdbarch, struct frame_info *frame, int regnum, struct type *type, const gdb_byte *buf);
|
2002-05-12 11:09:12 +08:00
|
|
|
extern void set_gdbarch_value_to_register (struct gdbarch *gdbarch, gdbarch_value_to_register_ftype *value_to_register);
|
|
|
|
|
|
2007-01-09 04:03:49 +08:00
|
|
|
/* Construct a value representing the contents of register REGNUM in
|
Use address_from_register in dwarf2-frame.c:read_addr_from_reg
This patch fixes a problem that prevented use of the Dwarf unwinders on SPU,
because dwarf2-frame.c common code did not support the situation where the
stack and/or frame pointer is maintained in a *vector* register. This is
because read_addr_from_reg is hard-coded to assume that such pointers can
be read from registers via a simple get_frame_register / unpack_pointer
operation.
Now, there *is* a routine address_from_register that calls into the
appropriate tdep routines to handle pointer values in "weird" registers
like on SPU, but it turns out I cannot simply change dwarf2-frame.c to
use address_from_register. This is because address_from_register uses
value_from_register to create a (temporary) value, and that routine
at some point calls get_frame_id in order to set up that value's
VALUE_FRAME_ID entry.
However, the dwarf2-frame.c read_addr_from_reg routine will be called
during early unwinding (to unwind the frame's CFA), at which point the
frame's ID is not actually known yet! This would cause an assert.
On the other hand, we may notice that VALUE_FRAME_ID is only needed in the
value returned by value_from_register if that value is later used as an
lvalue. But this is obviously never done to the temporary value used in
address_from_register. So, if we could change address_from_register to
not call value_from_register but instead accept constructing a value
that doesn't have VALUE_FRAME_ID set, things should be fine.
To do that, we can change the value_from_register callback to accept
a FRAME_ID instead of a FRAME; the only existing uses of the FRAME
argument were either to extract its frame ID, or its gdbarch. (To
keep a way of getting at the latter, we also change the callback's
type from "f" to "m".) Together with the required follow-on changes
in the existing value_from_register implementations (including the
default one), this seems to fix the problem.
As another minor interface cleanup, I've removed the explicit TYPE
argument from address_from_register. This routine really always
uses a default pointer type, and in the new implementation it -to
some extent- relies on that fact, in that it will now no longer
handle types that require gdbarch_convert_register_p handling.
gdb:
2014-04-17 Ulrich Weigand <uweigand@de.ibm.com>
* gdbarch.sh (value_from_register): Make class "m" instead of "f".
Replace FRAME argument with FRAME_ID.
* gdbarch.c, gdbarch.h: Regenerate.
* findvar.c (default_value_from_register): Add GDBARCH argument;
replace FRAME by FRAME_ID. No longer call get_frame_id.
(value_from_register): Update call to gdbarch_value_from_register.
* value.h (default_value_from_register): Update prototype.
* s390-linux-tdep.c (s390_value_from_register): Update interface
and call to default_value_from_register.
* spu-tdep.c (spu_value_from_register): Likewise.
* findvar.c (address_from_register): Remove TYPE argument.
Do not call value_from_register; use gdbarch_value_from_register
with null_frame_id instead.
* value.h (address_from_register): Update prototype.
* dwarf2-frame.c (read_addr_from_reg): Use address_from_register.
* dwarf2loc.c (dwarf_expr_read_addr_from_reg): Update for
address_from_register interface change.
2014-04-17 20:01:39 +08:00
|
|
|
frame FRAME_ID, interpreted as type TYPE. The routine needs to
|
2007-01-09 04:03:49 +08:00
|
|
|
allocate and return a struct value with all value attributes
|
|
|
|
|
(but not the value contents) filled in. */
|
|
|
|
|
|
Use address_from_register in dwarf2-frame.c:read_addr_from_reg
This patch fixes a problem that prevented use of the Dwarf unwinders on SPU,
because dwarf2-frame.c common code did not support the situation where the
stack and/or frame pointer is maintained in a *vector* register. This is
because read_addr_from_reg is hard-coded to assume that such pointers can
be read from registers via a simple get_frame_register / unpack_pointer
operation.
Now, there *is* a routine address_from_register that calls into the
appropriate tdep routines to handle pointer values in "weird" registers
like on SPU, but it turns out I cannot simply change dwarf2-frame.c to
use address_from_register. This is because address_from_register uses
value_from_register to create a (temporary) value, and that routine
at some point calls get_frame_id in order to set up that value's
VALUE_FRAME_ID entry.
However, the dwarf2-frame.c read_addr_from_reg routine will be called
during early unwinding (to unwind the frame's CFA), at which point the
frame's ID is not actually known yet! This would cause an assert.
On the other hand, we may notice that VALUE_FRAME_ID is only needed in the
value returned by value_from_register if that value is later used as an
lvalue. But this is obviously never done to the temporary value used in
address_from_register. So, if we could change address_from_register to
not call value_from_register but instead accept constructing a value
that doesn't have VALUE_FRAME_ID set, things should be fine.
To do that, we can change the value_from_register callback to accept
a FRAME_ID instead of a FRAME; the only existing uses of the FRAME
argument were either to extract its frame ID, or its gdbarch. (To
keep a way of getting at the latter, we also change the callback's
type from "f" to "m".) Together with the required follow-on changes
in the existing value_from_register implementations (including the
default one), this seems to fix the problem.
As another minor interface cleanup, I've removed the explicit TYPE
argument from address_from_register. This routine really always
uses a default pointer type, and in the new implementation it -to
some extent- relies on that fact, in that it will now no longer
handle types that require gdbarch_convert_register_p handling.
gdb:
2014-04-17 Ulrich Weigand <uweigand@de.ibm.com>
* gdbarch.sh (value_from_register): Make class "m" instead of "f".
Replace FRAME argument with FRAME_ID.
* gdbarch.c, gdbarch.h: Regenerate.
* findvar.c (default_value_from_register): Add GDBARCH argument;
replace FRAME by FRAME_ID. No longer call get_frame_id.
(value_from_register): Update call to gdbarch_value_from_register.
* value.h (default_value_from_register): Update prototype.
* s390-linux-tdep.c (s390_value_from_register): Update interface
and call to default_value_from_register.
* spu-tdep.c (spu_value_from_register): Likewise.
* findvar.c (address_from_register): Remove TYPE argument.
Do not call value_from_register; use gdbarch_value_from_register
with null_frame_id instead.
* value.h (address_from_register): Update prototype.
* dwarf2-frame.c (read_addr_from_reg): Use address_from_register.
* dwarf2loc.c (dwarf_expr_read_addr_from_reg): Update for
address_from_register interface change.
2014-04-17 20:01:39 +08:00
|
|
|
typedef struct value * (gdbarch_value_from_register_ftype) (struct gdbarch *gdbarch, struct type *type, int regnum, struct frame_id frame_id);
|
|
|
|
|
extern struct value * gdbarch_value_from_register (struct gdbarch *gdbarch, struct type *type, int regnum, struct frame_id frame_id);
|
2007-01-09 04:03:49 +08:00
|
|
|
extern void set_gdbarch_value_from_register (struct gdbarch *gdbarch, gdbarch_value_from_register_ftype *value_from_register);
|
|
|
|
|
|
2009-06-18 02:50:31 +08:00
|
|
|
typedef CORE_ADDR (gdbarch_pointer_to_address_ftype) (struct gdbarch *gdbarch, struct type *type, const gdb_byte *buf);
|
2005-05-14 14:07:42 +08:00
|
|
|
extern CORE_ADDR gdbarch_pointer_to_address (struct gdbarch *gdbarch, struct type *type, const gdb_byte *buf);
|
* gdbarch.sh (POINTER_TO_ADDRESS, ADDRESS_TO_POINTER): Two new
functions which architectures can redefine, defaulting to
generic_pointer_to_address and generic_address_to_pointer.
* findvar.c (extract_typed_address, store_typed_address,
generic_pointer_to_address, generic_address_to_pointer): New
functions.
(POINTER_TO_ADDRESS, ADDRESS_TO_POINTER): Provide default
definitions.
(extract_address, store_address): Doc fixes.
* values.c (value_as_pointer): Doc fix.
(value_from_pointer): New function.
* defs.h (extract_typed_address, store_typed_address): New
declarations.
* inferior.h (generic_address_to_pointer,
generic_pointer_to_address): New declarations.
* value.h (value_from_pointer): New declaration.
* ax-gdb.c (const_var_ref): Use value_from_pointer, not
value_from_longest.
* blockframe.c (generic_push_dummy_frame): Use read_pc and
read_sp, not read_register.
* c-valprint.c (c_val_print): Use extract_typed_address instead of
extract_address to extract vtable entries and references.
* cp-valprint.c (cp_print_value_fields): Use value_from_pointer
instead of value_from_longest to extract the vtable's address.
* eval.c (evaluate_subexp_standard): Use value_from_pointer
instead of value_from_longest to compute `this', and for doing
pointer-to-member dereferencing.
* findvar.c (read_register): Use extract_unsigned_integer, not
extract_address.
(read_var_value): Use store_typed_address instead of store_address
for building label values.
(locate_var_value): Use value_from_pointer instead of
value_from_longest.
* hppa-tdep.c (find_stub_with_shl_get): Use value_from_pointer,
instead of value_from_longest, to build arguments to __d_shl_get.
* printcmd.c (set_next_address): Use value_from_pointer, not
value_from_longest.
(x_command): Use value_from_pointer, not value_from_longest.
* tracepoint.c (set_traceframe_context): Use value_from_pointer,
not value_from_longest.
* valarith.c (value_add, value_sub): Use value_from_pointer, not
value_from_longest.
* valops.c (find_function_in_inferior, value_coerce_array,
value_coerce_function, value_addr, hand_function_call): Same.
* value.h (COERCE_REF): Use unpack_pointer, not unpack_long.
* values.c (unpack_long): Use extract_typed_address to produce
addresses from pointers and references, not extract_address.
(value_from_longest): Use store_typed_address instead of
store_address to produce pointer and reference values.
2000-04-15 02:43:41 +08:00
|
|
|
extern void set_gdbarch_pointer_to_address (struct gdbarch *gdbarch, gdbarch_pointer_to_address_ftype *pointer_to_address);
|
2000-05-02 16:57:21 +08:00
|
|
|
|
2009-06-18 02:50:31 +08:00
|
|
|
typedef void (gdbarch_address_to_pointer_ftype) (struct gdbarch *gdbarch, struct type *type, gdb_byte *buf, CORE_ADDR addr);
|
2005-05-14 14:07:42 +08:00
|
|
|
extern void gdbarch_address_to_pointer (struct gdbarch *gdbarch, struct type *type, gdb_byte *buf, CORE_ADDR addr);
|
* gdbarch.sh (POINTER_TO_ADDRESS, ADDRESS_TO_POINTER): Two new
functions which architectures can redefine, defaulting to
generic_pointer_to_address and generic_address_to_pointer.
* findvar.c (extract_typed_address, store_typed_address,
generic_pointer_to_address, generic_address_to_pointer): New
functions.
(POINTER_TO_ADDRESS, ADDRESS_TO_POINTER): Provide default
definitions.
(extract_address, store_address): Doc fixes.
* values.c (value_as_pointer): Doc fix.
(value_from_pointer): New function.
* defs.h (extract_typed_address, store_typed_address): New
declarations.
* inferior.h (generic_address_to_pointer,
generic_pointer_to_address): New declarations.
* value.h (value_from_pointer): New declaration.
* ax-gdb.c (const_var_ref): Use value_from_pointer, not
value_from_longest.
* blockframe.c (generic_push_dummy_frame): Use read_pc and
read_sp, not read_register.
* c-valprint.c (c_val_print): Use extract_typed_address instead of
extract_address to extract vtable entries and references.
* cp-valprint.c (cp_print_value_fields): Use value_from_pointer
instead of value_from_longest to extract the vtable's address.
* eval.c (evaluate_subexp_standard): Use value_from_pointer
instead of value_from_longest to compute `this', and for doing
pointer-to-member dereferencing.
* findvar.c (read_register): Use extract_unsigned_integer, not
extract_address.
(read_var_value): Use store_typed_address instead of store_address
for building label values.
(locate_var_value): Use value_from_pointer instead of
value_from_longest.
* hppa-tdep.c (find_stub_with_shl_get): Use value_from_pointer,
instead of value_from_longest, to build arguments to __d_shl_get.
* printcmd.c (set_next_address): Use value_from_pointer, not
value_from_longest.
(x_command): Use value_from_pointer, not value_from_longest.
* tracepoint.c (set_traceframe_context): Use value_from_pointer,
not value_from_longest.
* valarith.c (value_add, value_sub): Use value_from_pointer, not
value_from_longest.
* valops.c (find_function_in_inferior, value_coerce_array,
value_coerce_function, value_addr, hand_function_call): Same.
* value.h (COERCE_REF): Use unpack_pointer, not unpack_long.
* values.c (unpack_long): Use extract_typed_address to produce
addresses from pointers and references, not extract_address.
(value_from_longest): Use store_typed_address instead of
store_address to produce pointer and reference values.
2000-04-15 02:43:41 +08:00
|
|
|
extern void set_gdbarch_address_to_pointer (struct gdbarch *gdbarch, gdbarch_address_to_pointer_ftype *address_to_pointer);
|
2000-05-02 16:57:21 +08:00
|
|
|
|
2001-10-16 02:18:30 +08:00
|
|
|
extern int gdbarch_integer_to_address_p (struct gdbarch *gdbarch);
|
|
|
|
|
|
2005-05-09 Andrew Cagney <cagney@gnu.org>
Use gdb_byte in preference to bfd_byte.
* gdbarch.sh: Update.
* gdbarch.h, gdbarch.c: Re-generate.
* ada-lang.c, ada-lang.h, ada-valprint.c, arch-utils.c: Update.
* c-lang.c, c-lang.h, c-valprint.c, cp-valprint.c: Update.
* f-lang.c, f-lang.h, f-valprint.c, gdbcore.h, jv-lang.h: Update.
* jv-valprint.c, language.c, language.h, m2-lang.c: Update.
* m2-lang.h, m2-valprint.c, objc-lang.c, p-lang.c: Update.
* p-lang.h, p-valprint.c, regcache.c, scm-lang.c: Update.
* scm-lang.h, scm-valprint.c, target.c, target.h: Update.
* tramp-frame.c, valarith.c, valops.c, valprint.c: Update.
* valprint.h, value.c, value.h: Update.
2005-05-10 05:20:35 +08:00
|
|
|
typedef CORE_ADDR (gdbarch_integer_to_address_ftype) (struct gdbarch *gdbarch, struct type *type, const gdb_byte *buf);
|
|
|
|
|
extern CORE_ADDR gdbarch_integer_to_address (struct gdbarch *gdbarch, struct type *type, const gdb_byte *buf);
|
2001-10-16 02:18:30 +08:00
|
|
|
extern void set_gdbarch_integer_to_address (struct gdbarch *gdbarch, gdbarch_integer_to_address_ftype *integer_to_address);
|
|
|
|
|
|
2012-05-16 22:35:09 +08:00
|
|
|
/* Return the return-value convention that will be used by FUNCTION
|
|
|
|
|
to return a value of type VALTYPE. FUNCTION may be NULL in which
|
2008-04-30 00:06:07 +08:00
|
|
|
case the return convention is computed based only on VALTYPE.
|
|
|
|
|
|
|
|
|
|
If READBUF is not NULL, extract the return value and save it in this buffer.
|
|
|
|
|
|
|
|
|
|
If WRITEBUF is not NULL, it contains a return value which will be
|
|
|
|
|
stored into the appropriate register. This can be used when we want
|
|
|
|
|
to force the value returned by a function (see the "return" command
|
|
|
|
|
for instance). */
|
2003-10-20 23:38:02 +08:00
|
|
|
|
|
|
|
|
extern int gdbarch_return_value_p (struct gdbarch *gdbarch);
|
|
|
|
|
|
2012-05-16 22:35:09 +08:00
|
|
|
typedef enum return_value_convention (gdbarch_return_value_ftype) (struct gdbarch *gdbarch, struct value *function, struct type *valtype, struct regcache *regcache, gdb_byte *readbuf, const gdb_byte *writebuf);
|
|
|
|
|
extern enum return_value_convention gdbarch_return_value (struct gdbarch *gdbarch, struct value *function, struct type *valtype, struct regcache *regcache, gdb_byte *readbuf, const gdb_byte *writebuf);
|
2003-10-20 23:38:02 +08:00
|
|
|
extern void set_gdbarch_return_value (struct gdbarch *gdbarch, gdbarch_return_value_ftype *return_value);
|
|
|
|
|
|
2012-06-08 22:24:57 +08:00
|
|
|
/* Return true if the return value of function is stored in the first hidden
|
|
|
|
|
parameter. In theory, this feature should be language-dependent, specified
|
|
|
|
|
by language and its ABI, such as C++. Unfortunately, compiler may
|
|
|
|
|
implement it to a target-dependent feature. So that we need such hook here
|
|
|
|
|
to be aware of this in GDB. */
|
|
|
|
|
|
|
|
|
|
typedef int (gdbarch_return_in_first_hidden_param_p_ftype) (struct gdbarch *gdbarch, struct type *type);
|
|
|
|
|
extern int gdbarch_return_in_first_hidden_param_p (struct gdbarch *gdbarch, struct type *type);
|
|
|
|
|
extern void set_gdbarch_return_in_first_hidden_param_p (struct gdbarch *gdbarch, gdbarch_return_in_first_hidden_param_p_ftype *return_in_first_hidden_param_p);
|
|
|
|
|
|
2008-01-11 21:20:02 +08:00
|
|
|
typedef CORE_ADDR (gdbarch_skip_prologue_ftype) (struct gdbarch *gdbarch, CORE_ADDR ip);
|
1999-08-31 09:14:27 +08:00
|
|
|
extern CORE_ADDR gdbarch_skip_prologue (struct gdbarch *gdbarch, CORE_ADDR ip);
|
|
|
|
|
extern void set_gdbarch_skip_prologue (struct gdbarch *gdbarch, gdbarch_skip_prologue_ftype *skip_prologue);
|
1999-06-15 02:08:47 +08:00
|
|
|
|
2008-06-12 06:03:49 +08:00
|
|
|
extern int gdbarch_skip_main_prologue_p (struct gdbarch *gdbarch);
|
|
|
|
|
|
|
|
|
|
typedef CORE_ADDR (gdbarch_skip_main_prologue_ftype) (struct gdbarch *gdbarch, CORE_ADDR ip);
|
|
|
|
|
extern CORE_ADDR gdbarch_skip_main_prologue (struct gdbarch *gdbarch, CORE_ADDR ip);
|
|
|
|
|
extern void set_gdbarch_skip_main_prologue (struct gdbarch *gdbarch, gdbarch_skip_main_prologue_ftype *skip_main_prologue);
|
|
|
|
|
|
PowerPC64 ELFv2 ABI: skip global entry point code
This patch handles another aspect of the ELFv2 ABI, which unfortunately
requires common code changes.
In ELFv2, functions may provide both a global and a local entry point.
The global entry point (where the function symbol points to) is intended
to be used for function-pointer or cross-module (PLT) calls, and requires
r12 to be set up to the entry point address itself. The local entry
point (which is found at a fixed offset after the global entry point,
as defined by bits in the symbol table entries' st_other field), instead
expects r2 to be set up to the current TOC.
Now, when setting a breakpoint on a function by name, you really want
that breakpoint to trigger either way, no matter whether the function
is called via its local or global entry point. Since the global entry
point will always fall through into the local entry point, the way to
achieve that is to simply set the breakpoint at the local entry point.
One way to do that would be to have prologue parsing skip the code
sequence that makes up the global entry point. Unfortunately, this
does not work reliably, since -for optimized code- GDB these days
will not actuall invoke the prologue parsing code but instead just
set the breakpoint at the symbol address and rely on DWARF being
correct at any point throughout the function ...
Unfortunately, I don't really see any way to express the notion of
local entry points with the current set of gdbarch callbacks.
Thus this patch adds a new callback, skip_entrypoint, that is
somewhat analogous to skip_prologue, but is called every time
GDB needs to determine a function start address, even in those
cases where GDB decides to not call skip_prologue.
As a side effect, the skip_entrypoint implementation on ppc64
does not need to perform any instruction parsing; it can simply
rely on the local entry point flags in the symbol table entry.
With this implemented, two test cases would still fail to set
the breakpoint correctly, but that's because they use the construct:
gdb_test "break *hello"
Now, using "*hello" explicitly instructs GDB to set the breakpoint
at the numerical value of "hello" treated as function pointer, so
it will by definition only hit the global entry point.
I think this behaviour is unavoidable, but acceptable -- most people
do not use this construct, and if they do, they get what they
asked for ...
In one of those two test cases, use of this construct is really
not appropriate. I think this was added way back when as a means
to work around prologue skipping problems on some platforms. These
days that shouldn't really be necessary any more ...
For the other (step-bt), we really want to make sure backtracing
works on the very first instruction of the routine. To enable that
test also on powerpc64le-linux, we can modify the code to call the
test function via function pointer (which makes it use the global
entry point in the ELFv2 ABI).
gdb/ChangeLog:
* gdbarch.sh (skip_entrypoint): New callback.
* gdbarch.c, gdbarch.h: Regenerate.
* symtab.c (skip_prologue_sal): Call gdbarch_skip_entrypoint.
* infrun.c (fill_in_stop_func): Likewise.
* ppc-linux-tdep.c: Include "elf/ppc64.h".
(ppc_elfv2_elf_make_msymbol_special): New function.
(ppc_elfv2_skip_entrypoint): Likewise.
(ppc_linux_init_abi): Install them for ELFv2.
gdb/testsuite/ChangeLog:
* gdb.base/sigbpt.exp: Do not use "*" when setting breakpoint
on a function.
* gdb.base/step-bt.c: Call hello via function pointer to make
sure its first instruction is executed on powerpc64le-linux.
2014-02-05 01:44:14 +08:00
|
|
|
/* On some platforms, a single function may provide multiple entry points,
|
|
|
|
|
e.g. one that is used for function-pointer calls and a different one
|
|
|
|
|
that is used for direct function calls.
|
|
|
|
|
In order to ensure that breakpoints set on the function will trigger
|
|
|
|
|
no matter via which entry point the function is entered, a platform
|
|
|
|
|
may provide the skip_entrypoint callback. It is called with IP set
|
|
|
|
|
to the main entry point of a function (as determined by the symbol table),
|
|
|
|
|
and should return the address of the innermost entry point, where the
|
|
|
|
|
actual breakpoint needs to be set. Note that skip_entrypoint is used
|
|
|
|
|
by GDB common code even when debugging optimized code, where skip_prologue
|
|
|
|
|
is not used. */
|
|
|
|
|
|
|
|
|
|
extern int gdbarch_skip_entrypoint_p (struct gdbarch *gdbarch);
|
|
|
|
|
|
|
|
|
|
typedef CORE_ADDR (gdbarch_skip_entrypoint_ftype) (struct gdbarch *gdbarch, CORE_ADDR ip);
|
|
|
|
|
extern CORE_ADDR gdbarch_skip_entrypoint (struct gdbarch *gdbarch, CORE_ADDR ip);
|
|
|
|
|
extern void set_gdbarch_skip_entrypoint (struct gdbarch *gdbarch, gdbarch_skip_entrypoint_ftype *skip_entrypoint);
|
|
|
|
|
|
1999-08-31 09:14:27 +08:00
|
|
|
typedef int (gdbarch_inner_than_ftype) (CORE_ADDR lhs, CORE_ADDR rhs);
|
|
|
|
|
extern int gdbarch_inner_than (struct gdbarch *gdbarch, CORE_ADDR lhs, CORE_ADDR rhs);
|
|
|
|
|
extern void set_gdbarch_inner_than (struct gdbarch *gdbarch, gdbarch_inner_than_ftype *inner_than);
|
1999-06-15 02:08:47 +08:00
|
|
|
|
2007-11-07 14:33:01 +08:00
|
|
|
typedef const gdb_byte * (gdbarch_breakpoint_from_pc_ftype) (struct gdbarch *gdbarch, CORE_ADDR *pcptr, int *lenptr);
|
2005-05-09 Andrew Cagney <cagney@gnu.org>
Use gdb_byte in preference to bfd_byte.
* gdbarch.sh: Update.
* gdbarch.h, gdbarch.c: Re-generate.
* ada-lang.c, ada-lang.h, ada-valprint.c, arch-utils.c: Update.
* c-lang.c, c-lang.h, c-valprint.c, cp-valprint.c: Update.
* f-lang.c, f-lang.h, f-valprint.c, gdbcore.h, jv-lang.h: Update.
* jv-valprint.c, language.c, language.h, m2-lang.c: Update.
* m2-lang.h, m2-valprint.c, objc-lang.c, p-lang.c: Update.
* p-lang.h, p-valprint.c, regcache.c, scm-lang.c: Update.
* scm-lang.h, scm-valprint.c, target.c, target.h: Update.
* tramp-frame.c, valarith.c, valops.c, valprint.c: Update.
* valprint.h, value.c, value.h: Update.
2005-05-10 05:20:35 +08:00
|
|
|
extern const gdb_byte * gdbarch_breakpoint_from_pc (struct gdbarch *gdbarch, CORE_ADDR *pcptr, int *lenptr);
|
1999-08-31 09:14:27 +08:00
|
|
|
extern void set_gdbarch_breakpoint_from_pc (struct gdbarch *gdbarch, gdbarch_breakpoint_from_pc_ftype *breakpoint_from_pc);
|
2000-05-02 16:57:21 +08:00
|
|
|
|
2010-02-02 00:09:22 +08:00
|
|
|
/* Return the adjusted address and kind to use for Z0/Z1 packets.
|
|
|
|
|
KIND is usually the memory length of the breakpoint, but may have a
|
|
|
|
|
different target-specific meaning. */
|
|
|
|
|
|
|
|
|
|
typedef void (gdbarch_remote_breakpoint_from_pc_ftype) (struct gdbarch *gdbarch, CORE_ADDR *pcptr, int *kindptr);
|
|
|
|
|
extern void gdbarch_remote_breakpoint_from_pc (struct gdbarch *gdbarch, CORE_ADDR *pcptr, int *kindptr);
|
|
|
|
|
extern void set_gdbarch_remote_breakpoint_from_pc (struct gdbarch *gdbarch, gdbarch_remote_breakpoint_from_pc_ftype *remote_breakpoint_from_pc);
|
|
|
|
|
|
2003-10-14 07:41:40 +08:00
|
|
|
extern int gdbarch_adjust_breakpoint_address_p (struct gdbarch *gdbarch);
|
|
|
|
|
|
|
|
|
|
typedef CORE_ADDR (gdbarch_adjust_breakpoint_address_ftype) (struct gdbarch *gdbarch, CORE_ADDR bpaddr);
|
|
|
|
|
extern CORE_ADDR gdbarch_adjust_breakpoint_address (struct gdbarch *gdbarch, CORE_ADDR bpaddr);
|
|
|
|
|
extern void set_gdbarch_adjust_breakpoint_address (struct gdbarch *gdbarch, gdbarch_adjust_breakpoint_address_ftype *adjust_breakpoint_address);
|
|
|
|
|
|
2008-02-20 22:31:40 +08:00
|
|
|
typedef int (gdbarch_memory_insert_breakpoint_ftype) (struct gdbarch *gdbarch, struct bp_target_info *bp_tgt);
|
gdb/
* breakpoint.c (deprecated_read_memory_nobpt): Update to use
shadow_len.
(insert_bp_location, reattach_breakpoints, remove_breakpoint)
(delete_breakpoint): Update calls to changed methods.
(deprecated_insert_raw_breakpoint, deprecated_remove_raw_breakpoint)
(single_step_breakpoints, insert_single_step_breakpoint)
(remove_single_step_breakpoints): New.
* breakpoint.h (struct bp_target_info): New.
(struct bp_location): Replace shadow_contents with
target_info and overlay_target_info.
(deprecated_insert_raw_breakpoint, deprecated_remove_raw_breakpoint)
(insert_single_step_breakpoint, remove_single_step_breakpoints): New
prototypes.
* gdbarch.sh: Forward declare struct bp_target_info in gdbarch.h.
(memory_insert_breakpoint, memory_remove_breakpoint): Update second
argument.
* mem-break.c (default_memory_insert_breakpoint): Update. Set
placed_address, placed_size, and shadow_len.
(default_memory_remove_breakpoint): Update. Don't use
BREAKPOINT_FROM_PC.
(memory_insert_breakpoint, memory_remove_breakpoint): Update.
* target.c (update_current_target): Update prototypes for changed
functions.
(debug_to_insert_breakpoint, debug_to_remove_breakpoint)
(debug_to_insert_hw_breakpoint, debug_to_remove_hw_breakpoint):
Update.
* target.h: Forward declare struct bp_target_info.
(struct target_ops): Use a bp_target_info argument for
to_insert_breakpoint, to_remove_breakpoint,
to_insert_hw_breakpoint, and to_remove_hw_breakpoint.
(target_insert_breakpoint, target_remove_breakpoint)
(target_insert_hw_breakpoint, target_remove_hw_breakpoint)
(memory_insert_breakpoint, memory_remove_breakpoint)
(default_memory_insert_breakpoint, default_memory_remove_breakpoint):
Update.
* config/i386/nm-i386.h: Forward declare struct bp_target_info.
(i386_insert_hw_breakpoint, i386_remove_hw_breakpoint): Update.
(target_insert_hw_breakpoint, target_remove_hw_breakpoint): Likewise.
* gdbarch.c, gdbarch.h: Regenerated.
* alpha-tdep.c (alpha_software_single_step): Use
insert_single_step_breakpoint and remove_single_step_breakpoints.
Remove unused statics.
* arm-tdep.c (arm_software_single_step): Likewise. Add a note.
* cris-tdep.c (cris_software_single_step): Likewise.
* mips-tdep.c (mips_software_single_step): Likewise.
* rs6000-tdep.c (rs6000_software_single_step): Likewise.
* sparc-tdep.c (sparc_software_single_step): Likewise.
* wince.c (struct thread_info_struct): Remove step_prev.
(undoSStep): Use remove_single_step_breakpoints.
(wince_software_single_step): Use insert_single_step_breakpoint.
* corelow.c (ignore): Remove unneeded prototype. Update arguments.
* exec.c (ignore): Likewise.
* sol-thread.c (ignore): Likewise.
* procfs.c (dbx_link_shadow_contents): Delete.
(dbx_link_bpt): New.
(procfs_mourn_inferior): Remove it if necessary.
(remove_dbx_link_breakpoint): Use it.
(insert_dbx_link_bpt_in_file): Set it.
(procfs_init_inferior): Don't update dbx_link_bpt_addr.
* rs6000-nat.c (exec_one_dummy_insn): Use
deprecated_insert_raw_breakpoint and
deprecated_remove_raw_breakpoint.
* solib-irix.c (shadow_contents, breakpoint_addr): Delete.
(base_breakpoint): New.
(disable_break): Use it.
(enable_break): Set it.
* i386-nat.c (i386_insert_hw_breakpoint, i386_remove_hw_breakpoint):
Update.
* ia64-tdep.c (ia64_memory_insert_breakpoint)
(ia64_memory_remove_breakpoint): Likewise.
* m32r-tdep.c (m32r_memory_insert_breakpoint)
(m32r_memory_remove_breakpoint): Likewise.
* monitor.c (monitor_insert_breakpoint, monitor_remove_breakpoint):
Likewise. Remove unnecessary prototypes. Use placed_address
and placed_size. Removed useless read from memory.
* nto-procfs.c (procfs_insert_breakpoint)
(procfs_remove_breakpoint, procfs_insert_hw_breakpoint)
(procfs_remove_hw_breakpoint): Update.
* ocd.c (ocd_insert_breakpoint, ocd_remove_breakpoint): Likewise.
* ocd.h (ocd_insert_breakpoint, ocd_remove_breakpoint): Likewise.
* ppc-linux-tdep.c (ppc_linux_memory_remove_breakpoint): Likewise.
* ppc-tdep.h (ppc_linux_memory_remove_breakpoint): Likewise.
* remote-e7000.c (e7000_insert_breakpoint)
(e7000_remove_breakpoint): Likewise.
* remote-m32r-sdi.c (m32r_insert_breakpoint)
(m32r_remove_breakpoint): Likewise.
* remote-mips.c (mips_insert_breakpoint)
(mips_remove_breakpoint): Likewise.
* remote-rdp.c (remote_rdp_insert_breakpoint)
(remote_rdp_remove_breakpoint): Likewise.
(rdp_step): Use deprecated_insert_raw_breakpoint and
deprecated_remove_raw_breakpoint.
* remote-sds.c (sds_insert_breakpoint, sds_remove_breakpoint):
Update.
* remote-sim.c (gdbsim_insert_breakpoint, gdbsim_remove_breakpoint):
Delete.
(init_gdbsim_ops): Use memory_insert_breakpoint and
memory_remove_breakpoint.
* remote-st.c (st2000_insert_breakpoint)
(st2000_remove_breakpoint): Update. Remove unused
BREAKPOINT_FROM_PC.
* remote.c (remote_insert_breakpoint, remote_remove_breakpoint):
Update. Use placed_address and placed_size.
(remote_insert_hw_breakpoint, remote_remove_hw_breakpoint): Likewise.
gdb/doc/
* gdbint.texinfo (x86 Watchpoints, Target Conditionals): Update insert
and remove breakpoint prototypes.
(Watchpoints): Move description of target_insert_hw_breakpoint and
target_remove_hw_breakpoint ...
(Breakpoints): ... to here. Document target_insert_breakpoint and
target_remove_breakpoint.
2006-04-19 03:20:08 +08:00
|
|
|
extern int gdbarch_memory_insert_breakpoint (struct gdbarch *gdbarch, struct bp_target_info *bp_tgt);
|
1999-10-19 10:47:02 +08:00
|
|
|
extern void set_gdbarch_memory_insert_breakpoint (struct gdbarch *gdbarch, gdbarch_memory_insert_breakpoint_ftype *memory_insert_breakpoint);
|
2000-05-02 16:57:21 +08:00
|
|
|
|
2008-02-20 22:31:40 +08:00
|
|
|
typedef int (gdbarch_memory_remove_breakpoint_ftype) (struct gdbarch *gdbarch, struct bp_target_info *bp_tgt);
|
gdb/
* breakpoint.c (deprecated_read_memory_nobpt): Update to use
shadow_len.
(insert_bp_location, reattach_breakpoints, remove_breakpoint)
(delete_breakpoint): Update calls to changed methods.
(deprecated_insert_raw_breakpoint, deprecated_remove_raw_breakpoint)
(single_step_breakpoints, insert_single_step_breakpoint)
(remove_single_step_breakpoints): New.
* breakpoint.h (struct bp_target_info): New.
(struct bp_location): Replace shadow_contents with
target_info and overlay_target_info.
(deprecated_insert_raw_breakpoint, deprecated_remove_raw_breakpoint)
(insert_single_step_breakpoint, remove_single_step_breakpoints): New
prototypes.
* gdbarch.sh: Forward declare struct bp_target_info in gdbarch.h.
(memory_insert_breakpoint, memory_remove_breakpoint): Update second
argument.
* mem-break.c (default_memory_insert_breakpoint): Update. Set
placed_address, placed_size, and shadow_len.
(default_memory_remove_breakpoint): Update. Don't use
BREAKPOINT_FROM_PC.
(memory_insert_breakpoint, memory_remove_breakpoint): Update.
* target.c (update_current_target): Update prototypes for changed
functions.
(debug_to_insert_breakpoint, debug_to_remove_breakpoint)
(debug_to_insert_hw_breakpoint, debug_to_remove_hw_breakpoint):
Update.
* target.h: Forward declare struct bp_target_info.
(struct target_ops): Use a bp_target_info argument for
to_insert_breakpoint, to_remove_breakpoint,
to_insert_hw_breakpoint, and to_remove_hw_breakpoint.
(target_insert_breakpoint, target_remove_breakpoint)
(target_insert_hw_breakpoint, target_remove_hw_breakpoint)
(memory_insert_breakpoint, memory_remove_breakpoint)
(default_memory_insert_breakpoint, default_memory_remove_breakpoint):
Update.
* config/i386/nm-i386.h: Forward declare struct bp_target_info.
(i386_insert_hw_breakpoint, i386_remove_hw_breakpoint): Update.
(target_insert_hw_breakpoint, target_remove_hw_breakpoint): Likewise.
* gdbarch.c, gdbarch.h: Regenerated.
* alpha-tdep.c (alpha_software_single_step): Use
insert_single_step_breakpoint and remove_single_step_breakpoints.
Remove unused statics.
* arm-tdep.c (arm_software_single_step): Likewise. Add a note.
* cris-tdep.c (cris_software_single_step): Likewise.
* mips-tdep.c (mips_software_single_step): Likewise.
* rs6000-tdep.c (rs6000_software_single_step): Likewise.
* sparc-tdep.c (sparc_software_single_step): Likewise.
* wince.c (struct thread_info_struct): Remove step_prev.
(undoSStep): Use remove_single_step_breakpoints.
(wince_software_single_step): Use insert_single_step_breakpoint.
* corelow.c (ignore): Remove unneeded prototype. Update arguments.
* exec.c (ignore): Likewise.
* sol-thread.c (ignore): Likewise.
* procfs.c (dbx_link_shadow_contents): Delete.
(dbx_link_bpt): New.
(procfs_mourn_inferior): Remove it if necessary.
(remove_dbx_link_breakpoint): Use it.
(insert_dbx_link_bpt_in_file): Set it.
(procfs_init_inferior): Don't update dbx_link_bpt_addr.
* rs6000-nat.c (exec_one_dummy_insn): Use
deprecated_insert_raw_breakpoint and
deprecated_remove_raw_breakpoint.
* solib-irix.c (shadow_contents, breakpoint_addr): Delete.
(base_breakpoint): New.
(disable_break): Use it.
(enable_break): Set it.
* i386-nat.c (i386_insert_hw_breakpoint, i386_remove_hw_breakpoint):
Update.
* ia64-tdep.c (ia64_memory_insert_breakpoint)
(ia64_memory_remove_breakpoint): Likewise.
* m32r-tdep.c (m32r_memory_insert_breakpoint)
(m32r_memory_remove_breakpoint): Likewise.
* monitor.c (monitor_insert_breakpoint, monitor_remove_breakpoint):
Likewise. Remove unnecessary prototypes. Use placed_address
and placed_size. Removed useless read from memory.
* nto-procfs.c (procfs_insert_breakpoint)
(procfs_remove_breakpoint, procfs_insert_hw_breakpoint)
(procfs_remove_hw_breakpoint): Update.
* ocd.c (ocd_insert_breakpoint, ocd_remove_breakpoint): Likewise.
* ocd.h (ocd_insert_breakpoint, ocd_remove_breakpoint): Likewise.
* ppc-linux-tdep.c (ppc_linux_memory_remove_breakpoint): Likewise.
* ppc-tdep.h (ppc_linux_memory_remove_breakpoint): Likewise.
* remote-e7000.c (e7000_insert_breakpoint)
(e7000_remove_breakpoint): Likewise.
* remote-m32r-sdi.c (m32r_insert_breakpoint)
(m32r_remove_breakpoint): Likewise.
* remote-mips.c (mips_insert_breakpoint)
(mips_remove_breakpoint): Likewise.
* remote-rdp.c (remote_rdp_insert_breakpoint)
(remote_rdp_remove_breakpoint): Likewise.
(rdp_step): Use deprecated_insert_raw_breakpoint and
deprecated_remove_raw_breakpoint.
* remote-sds.c (sds_insert_breakpoint, sds_remove_breakpoint):
Update.
* remote-sim.c (gdbsim_insert_breakpoint, gdbsim_remove_breakpoint):
Delete.
(init_gdbsim_ops): Use memory_insert_breakpoint and
memory_remove_breakpoint.
* remote-st.c (st2000_insert_breakpoint)
(st2000_remove_breakpoint): Update. Remove unused
BREAKPOINT_FROM_PC.
* remote.c (remote_insert_breakpoint, remote_remove_breakpoint):
Update. Use placed_address and placed_size.
(remote_insert_hw_breakpoint, remote_remove_hw_breakpoint): Likewise.
gdb/doc/
* gdbint.texinfo (x86 Watchpoints, Target Conditionals): Update insert
and remove breakpoint prototypes.
(Watchpoints): Move description of target_insert_hw_breakpoint and
target_remove_hw_breakpoint ...
(Breakpoints): ... to here. Document target_insert_breakpoint and
target_remove_breakpoint.
2006-04-19 03:20:08 +08:00
|
|
|
extern int gdbarch_memory_remove_breakpoint (struct gdbarch *gdbarch, struct bp_target_info *bp_tgt);
|
1999-10-19 10:47:02 +08:00
|
|
|
extern void set_gdbarch_memory_remove_breakpoint (struct gdbarch *gdbarch, gdbarch_memory_remove_breakpoint_ftype *memory_remove_breakpoint);
|
|
|
|
|
|
1999-08-31 09:14:27 +08:00
|
|
|
extern CORE_ADDR gdbarch_decr_pc_after_break (struct gdbarch *gdbarch);
|
|
|
|
|
extern void set_gdbarch_decr_pc_after_break (struct gdbarch *gdbarch, CORE_ADDR decr_pc_after_break);
|
1999-06-15 02:08:47 +08:00
|
|
|
|
2004-06-19 05:36:16 +08:00
|
|
|
/* A function can be addressed by either it's "pointer" (possibly a
|
|
|
|
|
descriptor address) or "entry point" (first executable instruction).
|
|
|
|
|
The method "convert_from_func_ptr_addr" converting the former to the
|
2007-06-19 02:23:08 +08:00
|
|
|
latter. gdbarch_deprecated_function_start_offset is being used to implement
|
2004-06-19 05:36:16 +08:00
|
|
|
a simplified subset of that functionality - the function's address
|
|
|
|
|
corresponds to the "function pointer" and the function's start
|
|
|
|
|
corresponds to the "function entry point" - and hence is redundant. */
|
|
|
|
|
|
|
|
|
|
extern CORE_ADDR gdbarch_deprecated_function_start_offset (struct gdbarch *gdbarch);
|
|
|
|
|
extern void set_gdbarch_deprecated_function_start_offset (struct gdbarch *gdbarch, CORE_ADDR deprecated_function_start_offset);
|
1999-06-15 02:08:47 +08:00
|
|
|
|
* Makefile.in (arm-tdep.o, eval.o, target-descriptions.o)
(xml-tdesc.o): Update.
* xml-support.c: Add a comment.
(gdb_xml_enums_boolean): New variable.
(gdb_xml_parse_attr_enum): Use strcasecmp.
* xml-support.h (gdb_xml_enums_boolean): Declare.
* xml-tdesc.c (struct tdesc_parsing_data): Record current_feature,
next_regnum, and current_union.
(tdesc_start_feature, tdesc_start_reg, tdesc_start_union)
(tdesc_end_union, tdesc_start_field, tdesc_start_vector)
(field_attributes, union_children, reg_attributes, union_attributes)
(vector_attributes, feature_attributes, feature_children): New.
(target_children): Make static. Add <feature>.
(tdesc_elements): Make static.
* target-descriptions.c (struct tdesc_reg, tdesc_reg_p, type_p)
(struct tdesc_feature, tdesc_feature_p): New types.
(struct target_desc): Add features member.
(struct tdesc_arch_data, tdesc_data): New.
(target_find_description): Clarify error message. Warn about
ignored register descriptions.
(tdesc_has_registers, tdesc_find_feature, tdesc_feature_name)
(tdesc_named_type, tdesc_data_init, tdesc_data_alloc)
(tdesc_data_cleanup, tdesc_numbered_register)
(tdesc_numbered_register_choices, tdesc_find_register)
(tdesc_register_name, tdesc_register_type)
(tdesc_remote_register_number, tdesc_register_reggroup_p)
(set_tdesc_pseudo_register_name, set_tdesc_pseudo_register_type)
(set_tdesc_pseudo_register_reggroup_p, tdesc_use_registers)
(tdesc_free_reg, tdesc_create_reg, tdesc_free_feature)
(tdesc_create_feature, tdesc_record_type): New.
(free_target_description): Free features.
(_initialize_target_descriptions): Initialize tdesc_data.
* arch-utils.c (default_remote_register_number): New.
* arch-utils.h (default_remote_register_number): New prototype.
* target-descriptions.h (set_tdesc_pseudo_register_name)
(set_tdesc_pseudo_register_type, set_tdesc_pseudo_register_reggroup_p)
(tdesc_use_registers, tdesc_data_alloc, tdesc_data_cleanup)
(tdesc_numbered_register, tdesc_numbered_register_choices)
(tdesc_has_registers, tdesc_find_feature, tdesc_feature_name)
(tdesc_named_type, tdesc_create_feature, tdesc_record_type)
(tdesc_create_reg): Declare.
* gdbarch.sh (remote_register_number): New entry.
* gdbarch.c, gdbarch.h: Regenerate.
* remote.c (init_remote_state): Use gdbarch_remote_register_number.
* features/gdb-target.dtd: Add feature, reg, vector, union, and field.
* arm-tdep.c (arm_register_aliases): New.
(arm_register_name_strings): Rename to...
(arm_register_names): ...this. Make const. Delete the old version.
(current_option, arm_register_byte): Delete.
(set_disassembly_style): Simplify. Do not adjust arm_register_names.
(value_of_arm_user_reg): New.
(arm_gdbarch_init): Verify any described registers. Call
tdesc_use_registers. Don't use arm_register_byte. Create aliases
for standard register names.
(_initialize_arm_tdep): Do not adjust arm_register_names.
* user-regs.c (struct user_reg): Add baton member.
(append_user_reg, user_reg_add_builtin, user_regs_init)
(user_reg_add, value_of_user_reg): Use a baton for user
register functions.
* std-regs.c: Update.
* user-regs.h (user_reg_read_ftype, user_reg_add_builtin)
(user_reg_add): Add baton argument.
* NEWS: Mention target description register support.
* features/arm-core.xml, features/arm-fpa.xml: New.
* eval.c (evaluate_subexp_standard): Allow ptype $register
when the program is not running.
* gdb.texinfo (-target-disconnect): Use @smallexample.
(Requirements): Add anchor for Expat. Update description.
(Target Descriptions): Mention Expat.
(Target Description Format): Document new elements. Use
@smallexample.
(Predefined Target Types, Standard Target Features): New sections.
* doc/gdbint.texinfo (Target Descriptions): New section.
* gdb.xml/single-reg.xml, gdb.xml/tdesc-regs.exp,
gdb.xml/core-only.xml, gdb.xml/extra-regs.xml: New files.
2007-02-09 05:00:36 +08:00
|
|
|
/* Return the remote protocol register number associated with this
|
|
|
|
|
register. Normally the identity mapping. */
|
|
|
|
|
|
|
|
|
|
typedef int (gdbarch_remote_register_number_ftype) (struct gdbarch *gdbarch, int regno);
|
|
|
|
|
extern int gdbarch_remote_register_number (struct gdbarch *gdbarch, int regno);
|
|
|
|
|
extern void set_gdbarch_remote_register_number (struct gdbarch *gdbarch, gdbarch_remote_register_number_ftype *remote_register_number);
|
|
|
|
|
|
2005-04-01 03:58:26 +08:00
|
|
|
/* Fetch the target specific address used to represent a load module. */
|
|
|
|
|
|
|
|
|
|
extern int gdbarch_fetch_tls_load_module_address_p (struct gdbarch *gdbarch);
|
|
|
|
|
|
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|
|
|
typedef CORE_ADDR (gdbarch_fetch_tls_load_module_address_ftype) (struct objfile *objfile);
|
|
|
|
|
extern CORE_ADDR gdbarch_fetch_tls_load_module_address (struct gdbarch *gdbarch, struct objfile *objfile);
|
|
|
|
|
extern void set_gdbarch_fetch_tls_load_module_address (struct gdbarch *gdbarch, gdbarch_fetch_tls_load_module_address_ftype *fetch_tls_load_module_address);
|
|
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|
|
|
1999-08-31 09:14:27 +08:00
|
|
|
extern CORE_ADDR gdbarch_frame_args_skip (struct gdbarch *gdbarch);
|
|
|
|
|
extern void set_gdbarch_frame_args_skip (struct gdbarch *gdbarch, CORE_ADDR frame_args_skip);
|
1999-06-15 02:08:47 +08:00
|
|
|
|
2003-03-10 23:28:41 +08:00
|
|
|
extern int gdbarch_unwind_pc_p (struct gdbarch *gdbarch);
|
|
|
|
|
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|
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|
|
typedef CORE_ADDR (gdbarch_unwind_pc_ftype) (struct gdbarch *gdbarch, struct frame_info *next_frame);
|
|
|
|
|
extern CORE_ADDR gdbarch_unwind_pc (struct gdbarch *gdbarch, struct frame_info *next_frame);
|
|
|
|
|
extern void set_gdbarch_unwind_pc (struct gdbarch *gdbarch, gdbarch_unwind_pc_ftype *unwind_pc);
|
|
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|
|
2003-06-09 09:02:07 +08:00
|
|
|
extern int gdbarch_unwind_sp_p (struct gdbarch *gdbarch);
|
|
|
|
|
|
|
|
|
|
typedef CORE_ADDR (gdbarch_unwind_sp_ftype) (struct gdbarch *gdbarch, struct frame_info *next_frame);
|
|
|
|
|
extern CORE_ADDR gdbarch_unwind_sp (struct gdbarch *gdbarch, struct frame_info *next_frame);
|
|
|
|
|
extern void set_gdbarch_unwind_sp (struct gdbarch *gdbarch, gdbarch_unwind_sp_ftype *unwind_sp);
|
|
|
|
|
|
2003-06-27 01:18:43 +08:00
|
|
|
/* DEPRECATED_FRAME_LOCALS_ADDRESS as been replaced by the per-frame
|
|
|
|
|
frame-base. Enable frame-base before frame-unwind. */
|
|
|
|
|
|
2003-06-10 01:35:59 +08:00
|
|
|
extern int gdbarch_frame_num_args_p (struct gdbarch *gdbarch);
|
|
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|
|
|
1999-08-31 09:14:27 +08:00
|
|
|
typedef int (gdbarch_frame_num_args_ftype) (struct frame_info *frame);
|
|
|
|
|
extern int gdbarch_frame_num_args (struct gdbarch *gdbarch, struct frame_info *frame);
|
|
|
|
|
extern void set_gdbarch_frame_num_args (struct gdbarch *gdbarch, gdbarch_frame_num_args_ftype *frame_num_args);
|
1999-06-15 02:08:47 +08:00
|
|
|
|
2002-09-18 23:37:18 +08:00
|
|
|
extern int gdbarch_frame_align_p (struct gdbarch *gdbarch);
|
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|
|
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|
|
typedef CORE_ADDR (gdbarch_frame_align_ftype) (struct gdbarch *gdbarch, CORE_ADDR address);
|
|
|
|
|
extern CORE_ADDR gdbarch_frame_align (struct gdbarch *gdbarch, CORE_ADDR address);
|
|
|
|
|
extern void set_gdbarch_frame_align (struct gdbarch *gdbarch, gdbarch_frame_align_ftype *frame_align);
|
|
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|
2003-09-18 03:48:42 +08:00
|
|
|
typedef int (gdbarch_stabs_argument_has_addr_ftype) (struct gdbarch *gdbarch, struct type *type);
|
|
|
|
|
extern int gdbarch_stabs_argument_has_addr (struct gdbarch *gdbarch, struct type *type);
|
|
|
|
|
extern void set_gdbarch_stabs_argument_has_addr (struct gdbarch *gdbarch, gdbarch_stabs_argument_has_addr_ftype *stabs_argument_has_addr);
|
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|
2003-08-19 04:04:56 +08:00
|
|
|
extern int gdbarch_frame_red_zone_size (struct gdbarch *gdbarch);
|
|
|
|
|
extern void set_gdbarch_frame_red_zone_size (struct gdbarch *gdbarch, int frame_red_zone_size);
|
|
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|
|
2003-10-23 07:54:11 +08:00
|
|
|
typedef CORE_ADDR (gdbarch_convert_from_func_ptr_addr_ftype) (struct gdbarch *gdbarch, CORE_ADDR addr, struct target_ops *targ);
|
|
|
|
|
extern CORE_ADDR gdbarch_convert_from_func_ptr_addr (struct gdbarch *gdbarch, CORE_ADDR addr, struct target_ops *targ);
|
2000-10-26 15:41:25 +08:00
|
|
|
extern void set_gdbarch_convert_from_func_ptr_addr (struct gdbarch *gdbarch, gdbarch_convert_from_func_ptr_addr_ftype *convert_from_func_ptr_addr);
|
|
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|
|
|
2001-06-16 06:10:21 +08:00
|
|
|
/* On some machines there are bits in addresses which are not really
|
|
|
|
|
part of the address, but are used by the kernel, the hardware, etc.
|
2007-06-09 21:49:20 +08:00
|
|
|
for special purposes. gdbarch_addr_bits_remove takes out any such bits so
|
2001-06-16 06:10:21 +08:00
|
|
|
we get a "real" address such as one would find in a symbol table.
|
|
|
|
|
This is used only for addresses of instructions, and even then I'm
|
|
|
|
|
not sure it's used in all contexts. It exists to deal with there
|
|
|
|
|
being a few stray bits in the PC which would mislead us, not as some
|
|
|
|
|
sort of generic thing to handle alignment or segmentation (it's
|
|
|
|
|
possible it should be in TARGET_READ_PC instead). */
|
|
|
|
|
|
2008-09-05 19:42:32 +08:00
|
|
|
typedef CORE_ADDR (gdbarch_addr_bits_remove_ftype) (struct gdbarch *gdbarch, CORE_ADDR addr);
|
2001-06-16 06:10:21 +08:00
|
|
|
extern CORE_ADDR gdbarch_addr_bits_remove (struct gdbarch *gdbarch, CORE_ADDR addr);
|
|
|
|
|
extern void set_gdbarch_addr_bits_remove (struct gdbarch *gdbarch, gdbarch_addr_bits_remove_ftype *addr_bits_remove);
|
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|
|
|
|
2007-04-12 22:52:20 +08:00
|
|
|
/* FIXME/cagney/2001-01-18: This should be split in two. A target method that
|
|
|
|
|
indicates if the target needs software single step. An ISA method to
|
|
|
|
|
implement it.
|
2001-03-24 10:07:49 +08:00
|
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|
2007-04-12 22:52:20 +08:00
|
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|
FIXME/cagney/2001-01-18: The logic is backwards. It should be asking if the
|
|
|
|
|
target can single step. If not, then implement single step using breakpoints.
|
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|
2011-10-27 05:23:55 +08:00
|
|
|
A return value of 1 means that the software_single_step breakpoints
|
Force to insert software single step breakpoint
GDB doesn't insert software single step breakpoint if the instruction
branches to itself, so that the program can't stop after command "si".
(gdb) b 32
Breakpoint 2 at 0x8680: file git/gdb/testsuite/gdb.base/branch-to-self.c, line 32.
(gdb) c
Continuing.
Breakpoint 2, main () at gdb/git/gdb/testsuite/gdb.base/branch-to-self.c:32
32 asm (".Lhere: " BRANCH_INSN " .Lhere"); /* loop-line */
(gdb) si
infrun: clear_proceed_status_thread (Thread 3991.3991)
infrun: proceed (addr=0xffffffff, signal=GDB_SIGNAL_DEFAULT)
infrun: step-over queue now empty
infrun: resuming [Thread 3991.3991] for step-over
infrun: skipping breakpoint: stepping past insn at: 0x8680
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sending packet: $Z0,8678,4#f3...Packet received: OK
infrun: skipping breakpoint: stepping past insn at: 0x8680
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sending packet: $Z0,b6fe86c8,4#82...Packet received: OK
infrun: resume (step=1, signal=GDB_SIGNAL_0), trap_expected=1, current thread [Thread 3991.3991] at 0x868
breakpoint.c:should_be_inserted thinks the breakpoint shouldn't be
inserted, which is wrong. This patch restrict the condition that
only skip the non-single-step breakpoints if they are inserted at
the place we are stepping over, however we don't want to skip
single-step breakpoint if its thread is the thread we are stepping
over, so in this patch, I add a thread num in 'struct step_over_info'
to record the thread we're stepping over.
gdb:
2016-04-25 Yao Qi <yao.qi@linaro.org>
* breakpoint.c (should_be_inserted): Return 0 if the location's
owner is not single step breakpoint or single step breakpoint's
thread isn't the thread which is stepping past a breakpoint.
* gdbarch.sh (software_single_step): Update comments.
* gdbarch.h: Regenerated.
* infrun.c (struct step_over_info) <thread>: New field.
(set_step_over_info): New argument 'thread'. Callers updated.
(clear_step_over_info): Set field thread to -1.
(thread_is_stepping_over_breakpoint): New function.
* infrun.h (thread_is_stepping_over_breakpoint): Declaration.
2016-04-25 16:16:21 +08:00
|
|
|
were inserted; 0 means they were not. Multiple breakpoints may be
|
|
|
|
|
inserted for some instructions such as conditional branch. However,
|
|
|
|
|
each implementation must always evaluate the condition and only put
|
|
|
|
|
the breakpoint at the branch destination if the condition is true, so
|
|
|
|
|
that we ensure forward progress when stepping past a conditional
|
|
|
|
|
branch to self. */
|
2001-03-24 10:07:49 +08:00
|
|
|
|
|
|
|
|
extern int gdbarch_software_single_step_p (struct gdbarch *gdbarch);
|
|
|
|
|
|
2007-06-16 06:37:35 +08:00
|
|
|
typedef int (gdbarch_software_single_step_ftype) (struct frame_info *frame);
|
|
|
|
|
extern int gdbarch_software_single_step (struct gdbarch *gdbarch, struct frame_info *frame);
|
2001-03-24 10:07:49 +08:00
|
|
|
extern void set_gdbarch_software_single_step (struct gdbarch *gdbarch, gdbarch_software_single_step_ftype *software_single_step);
|
|
|
|
|
|
2004-11-01 01:38:16 +08:00
|
|
|
/* Return non-zero if the processor is executing a delay slot and a
|
|
|
|
|
further single-step is needed before the instruction finishes. */
|
|
|
|
|
|
|
|
|
|
extern int gdbarch_single_step_through_delay_p (struct gdbarch *gdbarch);
|
|
|
|
|
|
|
|
|
|
typedef int (gdbarch_single_step_through_delay_ftype) (struct gdbarch *gdbarch, struct frame_info *frame);
|
|
|
|
|
extern int gdbarch_single_step_through_delay (struct gdbarch *gdbarch, struct frame_info *frame);
|
|
|
|
|
extern void set_gdbarch_single_step_through_delay (struct gdbarch *gdbarch, gdbarch_single_step_through_delay_ftype *single_step_through_delay);
|
|
|
|
|
|
2003-09-04 08:05:52 +08:00
|
|
|
/* FIXME: cagney/2003-08-28: Need to find a better way of selecting the
|
2004-07-10 09:17:53 +08:00
|
|
|
disassembler. Perhaps objdump can handle it? */
|
2003-09-04 08:05:52 +08:00
|
|
|
|
2003-09-04 Andrew Cagney <cagney@redhat.com>
* avr-tdep.c: Include "dis-asm.h".
* cris-tdep.c: Include "dis-asm.h".
(cris_delayed_get_disassembler): Use "struct disassemble_info"
instead of corresponding typedef.
* h8300-tdep.c: Include "dis-asm.h".
* ia64-tdep.c: Include "dis-asm.h".
* i386-tdep.c: Include "dis-asm.h".
(i386_print_insn): Use "struct disassemble_info" instead of
corresponding typedef.
* m68k-tdep.c: Include "dis-asm.h".
* mcore-tdep.c: Include "dis-asm.h".
* mips-tdep.c: Include "dis-asm.h".
(gdb_print_insn_mips): Make static, use "struct disassemble_info"
instead of corresponding typedef.
* ns32k-tdep.c: Include "dis-asm.h".
* s390-tdep.c: Include "dis-asm.h".
* sparc-tdep.c: Include "dis-asm.h".
* vax-tdep.c: Include "dis-asm.h".
* v850-tdep.c: Include "dis-asm.h".
* mn10300-tdep.c: Include "dis-asm.h".
* rs6000-tdep.c: Include "dis-asm.h".
* xstormy16-tdep.c: Include "dis-asm.h".
(_initialize_xstormy16_tdep): Delete "extern" declaration of
print_insn_xstormy16.
* Makefile.in (v850-tdep.o): Update dependencies.
(vax-tdep.o, sparc-tdep.o, s390-tdep.o): Ditto.
(ns32k-tdep.o, mips-tdep.o, mcore-tdep.o): Ditto.
(m68k-tdep.o, ia64-tdep.o, i386-tdep.o): Ditto.
(h8300-tdep.o, cris-tdep.o, avr-tdep.o): Ditto.
(mn10300-tdep.o, xstormy16-tdep.o, disasm.o): Ditto.
(gdbarch_h): Remove $(dis_asm_h).
* disasm.c: Include "dis-asm.h".
(dis_asm_read_memory): Use "struct disassemble_info" instead of
corresponding typedef.
(dis_asm_memory_error, dump_insns, do_assembly_only): Ditto.
(gdb_disassemble_info, gdb_disassembly, gdb_print_insn): Ditto.
* gdbarch.sh: Do not include "dis-asm.h".
(struct disassemble_info): Declare opaque.
(TARGET_PRINT_INSN): Update declaration.
* gdbarch.h, gdbarch.c: Re-generate.
2003-09-09 12:41:32 +08:00
|
|
|
typedef int (gdbarch_print_insn_ftype) (bfd_vma vma, struct disassemble_info *info);
|
|
|
|
|
extern int gdbarch_print_insn (struct gdbarch *gdbarch, bfd_vma vma, struct disassemble_info *info);
|
2001-09-06 07:44:44 +08:00
|
|
|
extern void set_gdbarch_print_insn (struct gdbarch *gdbarch, gdbarch_print_insn_ftype *print_insn);
|
|
|
|
|
|
2007-06-16 06:39:52 +08:00
|
|
|
typedef CORE_ADDR (gdbarch_skip_trampoline_code_ftype) (struct frame_info *frame, CORE_ADDR pc);
|
|
|
|
|
extern CORE_ADDR gdbarch_skip_trampoline_code (struct gdbarch *gdbarch, struct frame_info *frame, CORE_ADDR pc);
|
2001-08-15 23:29:56 +08:00
|
|
|
extern void set_gdbarch_skip_trampoline_code (struct gdbarch *gdbarch, gdbarch_skip_trampoline_code_ftype *skip_trampoline_code);
|
|
|
|
|
|
2008-07-22 10:10:14 +08:00
|
|
|
/* If in_solib_dynsym_resolve_code() returns true, and SKIP_SOLIB_RESOLVER
|
2003-11-09 20:07:16 +08:00
|
|
|
evaluates non-zero, this is the address where the debugger will place
|
|
|
|
|
a step-resume breakpoint to get us past the dynamic linker. */
|
|
|
|
|
|
2003-11-15 05:22:42 +08:00
|
|
|
typedef CORE_ADDR (gdbarch_skip_solib_resolver_ftype) (struct gdbarch *gdbarch, CORE_ADDR pc);
|
2003-11-09 20:07:16 +08:00
|
|
|
extern CORE_ADDR gdbarch_skip_solib_resolver (struct gdbarch *gdbarch, CORE_ADDR pc);
|
|
|
|
|
extern void set_gdbarch_skip_solib_resolver (struct gdbarch *gdbarch, gdbarch_skip_solib_resolver_ftype *skip_solib_resolver);
|
|
|
|
|
|
2002-08-21 07:01:29 +08:00
|
|
|
/* Some systems also have trampoline code for returning from shared libs. */
|
|
|
|
|
|
2012-02-03 04:19:17 +08:00
|
|
|
typedef int (gdbarch_in_solib_return_trampoline_ftype) (struct gdbarch *gdbarch, CORE_ADDR pc, const char *name);
|
|
|
|
|
extern int gdbarch_in_solib_return_trampoline (struct gdbarch *gdbarch, CORE_ADDR pc, const char *name);
|
2002-08-21 07:01:29 +08:00
|
|
|
extern void set_gdbarch_in_solib_return_trampoline (struct gdbarch *gdbarch, gdbarch_in_solib_return_trampoline_ftype *in_solib_return_trampoline);
|
|
|
|
|
|
2001-11-06 19:02:12 +08:00
|
|
|
/* A target might have problems with watchpoints as soon as the stack
|
|
|
|
|
frame of the current function has been destroyed. This mostly happens
|
2015-05-26 18:59:17 +08:00
|
|
|
as the first action in a function's epilogue. stack_frame_destroyed_p()
|
2001-11-06 19:02:12 +08:00
|
|
|
is defined to return a non-zero value if either the given addr is one
|
|
|
|
|
instruction after the stack destroying instruction up to the trailing
|
|
|
|
|
return instruction or if we can figure out that the stack frame has
|
|
|
|
|
already been invalidated regardless of the value of addr. Targets
|
|
|
|
|
which don't suffer from that problem could just let this functionality
|
|
|
|
|
untouched. */
|
|
|
|
|
|
2015-05-26 18:59:17 +08:00
|
|
|
typedef int (gdbarch_stack_frame_destroyed_p_ftype) (struct gdbarch *gdbarch, CORE_ADDR addr);
|
|
|
|
|
extern int gdbarch_stack_frame_destroyed_p (struct gdbarch *gdbarch, CORE_ADDR addr);
|
|
|
|
|
extern void set_gdbarch_stack_frame_destroyed_p (struct gdbarch *gdbarch, gdbarch_stack_frame_destroyed_p_ftype *stack_frame_destroyed_p);
|
2001-11-06 19:02:12 +08:00
|
|
|
|
MIPS: Keep the ISA bit in compressed code addresses
1. Background information
The MIPS architecture, as originally designed and implemented in
mid-1980s has a uniform instruction word size that is 4 bytes, naturally
aligned. As such all MIPS instructions are located at addresses that
have their bits #1 and #0 set to zeroes, and any attempt to execute an
instruction from an address that has any of the two bits set to one
causes an address error exception. This may for example happen when a
jump-register instruction is executed whose register value used as the
jump target has any of these bits set.
Then in mid 1990s LSI sought a way to improve code density for their
TinyRISC family of MIPS cores and invented an alternatively encoded
instruction set in a joint effort with MIPS Technologies (then a
subsidiary of SGI). The new instruction set has been named the MIPS16
ASE (Application-Specific Extension) and uses a variable instruction
word size, which is 2 bytes (as the name of the ASE suggests) for most,
but there are a couple of exceptions that take 4 bytes, and then most of
the 2-byte instructions can be treated with a 2-byte extension prefix to
expand the range of the immediate operands used.
As a result instructions are no longer 4-byte aligned, instead they are
aligned to a multiple of 2. That left the bit #0 still unused for code
references, be it for the standard MIPS (i.e. as originally invented) or
for the MIPS16 instruction set, and based on that observation a clever
trick was invented that on one hand allowed the processor to be
seamlessly switched between the two instruction sets at any time at the
run time while on the other avoided the introduction of any special
control register to do that.
So it is the bit #0 of the instruction address that was chosen as the
selector and named the ISA bit. Any instruction executed at an even
address is interpreted as a standard MIPS instruction (the address still
has to have its bit #1 clear), any instruction executed at an odd
address is interpreted as a MIPS16 instruction.
To switch between modes ordinary jump instructions are used, such as
used for function calls and returns, specifically the bit #0 of the
source register used in jump-register instructions selects the execution
(ISA) mode for the following piece of code to be interpreted in.
Additionally new jump-immediate instructions were added that flipped the
ISA bit to select the opposite mode upon execution. They were
considered necessary to avoid the need to make register jumps in all
cases as the original jump-immediate instructions provided no way to
change the bit #0 at all.
This was all important for cases where standard MIPS and MIPS16 code had
to be mixed, either for compatibility with the existing binary code base
or to access resources not reachable from MIPS16 code (the MIPS16
instruction set only provides access to general-purpose registers, and
not for example floating-point unit registers or privileged coprocessor
0 registers) -- pieces of code in the opposite mode can be executed as
ordinary subroutine calls.
A similar approach has been more recently adopted for the MIPS16
replacement instruction set defined as the so called microMIPS ASE.
This is another instruction set encoding introduced to the MIPS
architecture. Just like the MIPS16 ASE, the microMIPS instruction set
uses a variable-length encoding, where each instruction takes a multiple
of 2 bytes. The ISA bit has been reused and for microMIPS-capable
processors selects between the standard MIPS and the microMIPS mode
instead.
2. Statement of the problem
To put it shortly, MIPS16 and microMIPS code pointers used by GDB are
different to these observed at the run time. This results in the same
expressions being evaluated producing different results in GDB and in
the program being debugged. Obviously it's the results obtained at the
run time that are correct (they define how the program behaves) and
therefore by definition the results obtained in GDB are incorrect.
A bit longer description will record that obviously at the run time the
ISA bit has to be set correctly (refer to background information above
if unsure why so) or the program will not run as expected. This is
recorded in all the executable file structures used at the run time: the
dynamic symbol table (but not always the static one!), the GOT, and
obviously in all the addresses embedded in code or data of the program
itself, calculated by applying the appropriate relocations at the static
link time.
While a program is being processed by GDB, the ISA bit is stripped off
from any code addresses, presumably to make them the same as the
respective raw memory byte address used by the processor to access the
instruction in the instruction fetch access cycle. This stripping is
actually performed outside GDB proper, in BFD, specifically
_bfd_mips_elf_symbol_processing (elfxx-mips.c, see the piece of code at
the very bottom of that function, starting with an: "If this is an
odd-valued function symbol, assume it's a MIPS16 or microMIPS one."
comment).
This function is also responsible for symbol table dumps made by
`objdump' too, so you'll never see the ISA bit reported there by that
tool, you need to use `readelf'.
This is however unlike what is ever done at the run time, the ISA bit
once present is never stripped off, for example a cast like this:
(short *) main
will not strip the ISA bit off and if the resulting pointer is intended
to be used to access instructions as data, for example for software
instruction decoding (like for fault recovery or emulation in a signal
handler) or for self-modifying code then the bit still has to be
stripped off by an explicit AND operation.
This is probably best illustrated with a simple real program example.
Let's consider the following simple program:
$ cat foobar.c
int __attribute__ ((mips16)) foo (void)
{
return 1;
}
int __attribute__ ((mips16)) bar (void)
{
return 2;
}
int __attribute__ ((nomips16)) foo32 (void)
{
return 3;
}
int (*foo32p) (void) = foo32;
int (*foop) (void) = foo;
int fooi = (int) foo;
int
main (void)
{
return foop ();
}
$
This is plain C with no odd tricks, except from the instruction mode
attributes. They are not necessary to trigger this problem, I just put
them here so that the program can be contained in a single source file
and to make it obvious which function is MIPS16 code and which is not.
Let's try it with Linux, so that everyone can repeat this experiment:
$ mips-linux-gnu-gcc -mips16 -g -O2 -o foobar foobar.c
$
Let's have a look at some interesting symbols:
$ mips-linux-gnu-readelf -s foobar | egrep 'table|foo|bar'
Symbol table '.dynsym' contains 7 entries:
Symbol table '.symtab' contains 95 entries:
55: 00000000 0 FILE LOCAL DEFAULT ABS foobar.c
66: 0040068c 4 FUNC GLOBAL DEFAULT [MIPS16] 12 bar
68: 00410848 4 OBJECT GLOBAL DEFAULT 21 foo32p
70: 00410844 4 OBJECT GLOBAL DEFAULT 21 foop
78: 00400684 8 FUNC GLOBAL DEFAULT 12 foo32
80: 00400680 4 FUNC GLOBAL DEFAULT [MIPS16] 12 foo
88: 00410840 4 OBJECT GLOBAL DEFAULT 21 fooi
$
Hmm, no sight of the ISA bit, but notice how foo and bar (but not
foo32!) have been marked as MIPS16 functions (ELF symbol structure's
`st_other' field is used for that).
So let's try to run and poke at this program with GDB. I'll be using a
native system for simplicity (I'll be using ellipses here and there to
remove unrelated clutter):
$ ./foobar
$ echo $?
1
$
So far, so good.
$ gdb ./foobar
[...]
(gdb) break main
Breakpoint 1 at 0x400490: file foobar.c, line 23.
(gdb) run
Starting program: .../foobar
Breakpoint 1, main () at foobar.c:23
23 return foop ();
(gdb)
Yay, it worked! OK, so let's poke at it:
(gdb) print main
$1 = {int (void)} 0x400490 <main>
(gdb) print foo32
$2 = {int (void)} 0x400684 <foo32>
(gdb) print foo32p
$3 = (int (*)(void)) 0x400684 <foo32>
(gdb) print bar
$4 = {int (void)} 0x40068c <bar>
(gdb) print foo
$5 = {int (void)} 0x400680 <foo>
(gdb) print foop
$6 = (int (*)(void)) 0x400681 <foo>
(gdb)
A-ha! Here's the difference and finally the ISA bit!
(gdb) print /x fooi
$7 = 0x400681
(gdb) p/x $pc
p/x $pc
$8 = 0x400491
(gdb)
And here as well...
(gdb) advance foo
foo () at foobar.c:4
4 }
(gdb) disassemble
Dump of assembler code for function foo:
0x00400680 <+0>: jr ra
0x00400682 <+2>: li v0,1
End of assembler dump.
(gdb) finish
Run till exit from #0 foo () at foobar.c:4
main () at foobar.c:24
24 }
Value returned is $9 = 1
(gdb) continue
Continuing.
[Inferior 1 (process 14103) exited with code 01]
(gdb)
So let's be a bit inquisitive...
(gdb) run
Starting program: .../foobar
Breakpoint 1, main () at foobar.c:23
23 return foop ();
(gdb)
Actually we do not like to run foo here at all. Let's run bar instead!
(gdb) set foop = bar
(gdb) print foop
$10 = (int (*)(void)) 0x40068c <bar>
(gdb)
Hmm, no ISA bit. Is it going to work?
(gdb) advance bar
bar () at foobar.c:9
9 }
(gdb) p/x $pc
$11 = 0x40068c
(gdb) disassemble
Dump of assembler code for function bar:
=> 0x0040068c <+0>: jr ra
0x0040068e <+2>: li v0,2
End of assembler dump.
(gdb) finish
Run till exit from #0 bar () at foobar.c:9
Program received signal SIGILL, Illegal instruction.
bar () at foobar.c:9
9 }
(gdb)
Oops!
(gdb) p/x $pc
$12 = 0x40068c
(gdb)
We're still there!
(gdb) continue
Continuing.
Program terminated with signal SIGILL, Illegal instruction.
The program no longer exists.
(gdb)
So let's try something else:
(gdb) run
Starting program: .../foobar
Breakpoint 1, main () at foobar.c:23
23 return foop ();
(gdb) set foop = foo
(gdb) advance foo
foo () at foobar.c:4
4 }
(gdb) disassemble
Dump of assembler code for function foo:
=> 0x00400680 <+0>: jr ra
0x00400682 <+2>: li v0,1
End of assembler dump.
(gdb) finish
Run till exit from #0 foo () at foobar.c:4
Program received signal SIGILL, Illegal instruction.
foo () at foobar.c:4
4 }
(gdb) continue
Continuing.
Program terminated with signal SIGILL, Illegal instruction.
The program no longer exists.
(gdb)
The same problem!
(gdb) run
Starting program:
/net/build2-lucid-cs/scratch/macro/mips-linux-fsf-gcc/isa-bit/foobar
Breakpoint 1, main () at foobar.c:23
23 return foop ();
(gdb) set foop = foo32
(gdb) advance foo32
foo32 () at foobar.c:14
14 }
(gdb) disassemble
Dump of assembler code for function foo32:
=> 0x00400684 <+0>: jr ra
0x00400688 <+4>: li v0,3
End of assembler dump.
(gdb) finish
Run till exit from #0 foo32 () at foobar.c:14
main () at foobar.c:24
24 }
Value returned is $14 = 3
(gdb) continue
Continuing.
[Inferior 1 (process 14113) exited with code 03]
(gdb)
That did work though, so it's the ISA bit only!
(gdb) quit
Enough!
That's the tip of the iceberg only though. So let's rebuild the
executable with some dynamic symbols:
$ mips-linux-gnu-gcc -mips16 -Wl,--export-dynamic -g -O2 -o foobar-dyn foobar.c
$ mips-linux-gnu-readelf -s foobar-dyn | egrep 'table|foo|bar'
Symbol table '.dynsym' contains 32 entries:
6: 004009cd 4 FUNC GLOBAL DEFAULT 12 bar
8: 00410b88 4 OBJECT GLOBAL DEFAULT 21 foo32p
9: 00410b84 4 OBJECT GLOBAL DEFAULT 21 foop
15: 004009c4 8 FUNC GLOBAL DEFAULT 12 foo32
17: 004009c1 4 FUNC GLOBAL DEFAULT 12 foo
25: 00410b80 4 OBJECT GLOBAL DEFAULT 21 fooi
Symbol table '.symtab' contains 95 entries:
55: 00000000 0 FILE LOCAL DEFAULT ABS foobar.c
69: 004009cd 4 FUNC GLOBAL DEFAULT 12 bar
71: 00410b88 4 OBJECT GLOBAL DEFAULT 21 foo32p
72: 00410b84 4 OBJECT GLOBAL DEFAULT 21 foop
79: 004009c4 8 FUNC GLOBAL DEFAULT 12 foo32
81: 004009c1 4 FUNC GLOBAL DEFAULT 12 foo
89: 00410b80 4 OBJECT GLOBAL DEFAULT 21 fooi
$
OK, now the ISA bit is there for a change, but the MIPS16 `st_other'
attribute gone, hmm... What does `objdump' do then:
$ mips-linux-gnu-objdump -Tt foobar-dyn | egrep 'SYMBOL|foo|bar'
foobar-dyn: file format elf32-tradbigmips
SYMBOL TABLE:
00000000 l df *ABS* 00000000 foobar.c
004009cc g F .text 00000004 0xf0 bar
00410b88 g O .data 00000004 foo32p
00410b84 g O .data 00000004 foop
004009c4 g F .text 00000008 foo32
004009c0 g F .text 00000004 0xf0 foo
00410b80 g O .data 00000004 fooi
DYNAMIC SYMBOL TABLE:
004009cc g DF .text 00000004 Base 0xf0 bar
00410b88 g DO .data 00000004 Base foo32p
00410b84 g DO .data 00000004 Base foop
004009c4 g DF .text 00000008 Base foo32
004009c0 g DF .text 00000004 Base 0xf0 foo
00410b80 g DO .data 00000004 Base fooi
$
Hmm, the attribute (0xf0, printed raw) is back, and the ISA bit gone
again.
Let's have a look at some DWARF-2 records GDB uses (I'll be stripping
off a lot here for brevity) -- debug info:
$ mips-linux-gnu-readelf -wi foobar
Contents of the .debug_info section:
[...]
Compilation Unit @ offset 0x88:
Length: 0xbb (32-bit)
Version: 4
Abbrev Offset: 62
Pointer Size: 4
<0><93>: Abbrev Number: 1 (DW_TAG_compile_unit)
<94> DW_AT_producer : (indirect string, offset: 0x19e): GNU C 4.8.0 20120513 (experimental) -meb -mips16 -march=mips32r2 -mhard-float -mllsc -mplt -mno-synci -mno-shared -mabi=32 -g -O2
<98> DW_AT_language : 1 (ANSI C)
<99> DW_AT_name : (indirect string, offset: 0x190): foobar.c
<9d> DW_AT_comp_dir : (indirect string, offset: 0x225): [...]
<a1> DW_AT_ranges : 0x0
<a5> DW_AT_low_pc : 0x0
<a9> DW_AT_stmt_list : 0x27
<1><ad>: Abbrev Number: 2 (DW_TAG_subprogram)
<ae> DW_AT_external : 1
<ae> DW_AT_name : foo
<b2> DW_AT_decl_file : 1
<b3> DW_AT_decl_line : 1
<b4> DW_AT_prototyped : 1
<b4> DW_AT_type : <0xc2>
<b8> DW_AT_low_pc : 0x400680
<bc> DW_AT_high_pc : 0x400684
<c0> DW_AT_frame_base : 1 byte block: 9c (DW_OP_call_frame_cfa)
<c2> DW_AT_GNU_all_call_sites: 1
<1><c2>: Abbrev Number: 3 (DW_TAG_base_type)
<c3> DW_AT_byte_size : 4
<c4> DW_AT_encoding : 5 (signed)
<c5> DW_AT_name : int
<1><c9>: Abbrev Number: 4 (DW_TAG_subprogram)
<ca> DW_AT_external : 1
<ca> DW_AT_name : (indirect string, offset: 0x18a): foo32
<ce> DW_AT_decl_file : 1
<cf> DW_AT_decl_line : 11
<d0> DW_AT_prototyped : 1
<d0> DW_AT_type : <0xc2>
<d4> DW_AT_low_pc : 0x400684
<d8> DW_AT_high_pc : 0x40068c
<dc> DW_AT_frame_base : 1 byte block: 9c (DW_OP_call_frame_cfa)
<de> DW_AT_GNU_all_call_sites: 1
<1><de>: Abbrev Number: 2 (DW_TAG_subprogram)
<df> DW_AT_external : 1
<df> DW_AT_name : bar
<e3> DW_AT_decl_file : 1
<e4> DW_AT_decl_line : 6
<e5> DW_AT_prototyped : 1
<e5> DW_AT_type : <0xc2>
<e9> DW_AT_low_pc : 0x40068c
<ed> DW_AT_high_pc : 0x400690
<f1> DW_AT_frame_base : 1 byte block: 9c (DW_OP_call_frame_cfa)
<f3> DW_AT_GNU_all_call_sites: 1
<1><f3>: Abbrev Number: 5 (DW_TAG_subprogram)
<f4> DW_AT_external : 1
<f4> DW_AT_name : (indirect string, offset: 0x199): main
<f8> DW_AT_decl_file : 1
<f9> DW_AT_decl_line : 21
<fa> DW_AT_prototyped : 1
<fa> DW_AT_type : <0xc2>
<fe> DW_AT_low_pc : 0x400490
<102> DW_AT_high_pc : 0x4004a4
<106> DW_AT_frame_base : 1 byte block: 9c (DW_OP_call_frame_cfa)
<108> DW_AT_GNU_all_tail_call_sites: 1
[...]
$
-- no sign of the ISA bit anywhere -- frame info:
$ mips-linux-gnu-readelf -wf foobar
[...]
Contents of the .debug_frame section:
00000000 0000000c ffffffff CIE
Version: 1
Augmentation: ""
Code alignment factor: 1
Data alignment factor: -4
Return address column: 31
DW_CFA_def_cfa_register: r29
DW_CFA_nop
00000010 0000000c 00000000 FDE cie=00000000 pc=00400680..00400684
00000020 0000000c 00000000 FDE cie=00000000 pc=00400684..0040068c
00000030 0000000c 00000000 FDE cie=00000000 pc=0040068c..00400690
00000040 00000018 00000000 FDE cie=00000000 pc=00400490..004004a4
DW_CFA_advance_loc: 6 to 00400496
DW_CFA_def_cfa_offset: 32
DW_CFA_offset: r31 at cfa-4
DW_CFA_advance_loc: 6 to 0040049c
DW_CFA_restore: r31
DW_CFA_def_cfa_offset: 0
DW_CFA_nop
DW_CFA_nop
DW_CFA_nop
[...]
$
-- no sign of the ISA bit anywhere -- range info (GDB doesn't use arange):
$ mips-linux-gnu-readelf -wR foobar
Contents of the .debug_ranges section:
Offset Begin End
00000000 00400680 00400690
00000000 00400490 004004a4
00000000 <End of list>
$
-- no sign of the ISA bit anywhere -- line info:
$ mips-linux-gnu-readelf -wl foobar
Raw dump of debug contents of section .debug_line:
[...]
Offset: 0x27
Length: 78
DWARF Version: 2
Prologue Length: 31
Minimum Instruction Length: 1
Initial value of 'is_stmt': 1
Line Base: -5
Line Range: 14
Opcode Base: 13
Opcodes:
Opcode 1 has 0 args
Opcode 2 has 1 args
Opcode 3 has 1 args
Opcode 4 has 1 args
Opcode 5 has 1 args
Opcode 6 has 0 args
Opcode 7 has 0 args
Opcode 8 has 0 args
Opcode 9 has 1 args
Opcode 10 has 0 args
Opcode 11 has 0 args
Opcode 12 has 1 args
The Directory Table is empty.
The File Name Table:
Entry Dir Time Size Name
1 0 0 0 foobar.c
Line Number Statements:
Extended opcode 2: set Address to 0x400681
Special opcode 6: advance Address by 0 to 0x400681 and Line by 1 to 2
Special opcode 7: advance Address by 0 to 0x400681 and Line by 2 to 4
Special opcode 55: advance Address by 3 to 0x400684 and Line by 8 to 12
Special opcode 7: advance Address by 0 to 0x400684 and Line by 2 to 14
Advance Line by -7 to 7
Special opcode 131: advance Address by 9 to 0x40068d and Line by 0 to 7
Special opcode 7: advance Address by 0 to 0x40068d and Line by 2 to 9
Advance PC by 3 to 0x400690
Extended opcode 1: End of Sequence
Extended opcode 2: set Address to 0x400491
Advance Line by 21 to 22
Copy
Special opcode 6: advance Address by 0 to 0x400491 and Line by 1 to 23
Special opcode 60: advance Address by 4 to 0x400495 and Line by -1 to 22
Special opcode 34: advance Address by 2 to 0x400497 and Line by 1 to 23
Special opcode 62: advance Address by 4 to 0x40049b and Line by 1 to 24
Special opcode 32: advance Address by 2 to 0x40049d and Line by -1 to 23
Special opcode 6: advance Address by 0 to 0x40049d and Line by 1 to 24
Advance PC by 7 to 0x4004a4
Extended opcode 1: End of Sequence
[...]
-- a-ha, the ISA bit is there! However it's not always right for some
reason, I don't have a small test case to show it, but here's an excerpt
from MIPS16 libc, a prologue of a function:
00019630 <__libc_init_first>:
19630: e8a0 jrc ra
19632: 6500 nop
00019634 <_init>:
19634: f000 6a11 li v0,17
19638: f7d8 0b08 la v1,15e00 <_DYNAMIC+0x15c54>
1963c: f400 3240 sll v0,16
19640: e269 addu v0,v1
19642: 659a move gp,v0
19644: 64f6 save 48,ra,s0-s1
19646: 671c move s0,gp
19648: d204 sw v0,16(sp)
1964a: f352 984c lw v0,-27828(s0)
1964e: 6724 move s1,a0
and the corresponding DWARF-2 line info:
Line Number Statements:
Extended opcode 2: set Address to 0x19631
Advance Line by 44 to 45
Copy
Special opcode 8: advance Address by 0 to 0x19631 and Line by 3 to 48
Special opcode 66: advance Address by 4 to 0x19635 and Line by 5 to 53
Advance PC by constant 17 to 0x19646
Special opcode 25: advance Address by 1 to 0x19647 and Line by 6 to 59
Advance Line by -6 to 53
Special opcode 33: advance Address by 2 to 0x19649 and Line by 0 to 53
Special opcode 39: advance Address by 2 to 0x1964b and Line by 6 to 59
Advance Line by -6 to 53
Special opcode 61: advance Address by 4 to 0x1964f and Line by 0 to 53
-- see that "Advance PC by constant 17" there? It clears the ISA bit,
however code at 0x19646 is not standard MIPS code at all. For some
reason the constant is always 17, I've never seen DW_LNS_const_add_pc
used with any other value -- is that a binutils bug or what?
3. Solution:
I think we should retain the value of the ISA bit in code references,
that is effectively treat them as cookies as they indeed are (although
trivially calculated) rather than raw memory byte addresses.
In a perfect world both the static symbol table and the respective
DWARF-2 records should be fixed to include the ISA bit in all the cases.
I think however that this is infeasible.
All the uses of `_bfd_mips_elf_symbol_processing' can not necessarily be
tracked down. This function is used by `elf_slurp_symbol_table' that in
turn is used by `bfd_canonicalize_symtab' and
`bfd_canonicalize_dynamic_symtab', which are public interfaces.
Similarly DWARF-2 records are used outside GDB, one notable if a bit
questionable is the exception unwinder (libgcc/unwind-dw2.c) -- I have
identified at least bits in `execute_cfa_program' and
`uw_frame_state_for', both around the calls to `_Unwind_IsSignalFrame',
that would need an update as they effectively flip the ISA bit freely;
see also the comment about MASK_RETURN_ADDR in gcc/config/mips/mips.h.
But there may be more places. Any change in how DWARF-2 records are
produced would require an update there and would cause compatibility
problems with libgcc.a binaries already distributed; given that this is
a static library a complex change involving function renames would
likely be required.
I propose therefore to accept the existing inconsistencies and deal with
them entirely within GDB. I have figured out that the ISA bit lost in
various places can still be recovered as long as we have symbol
information -- that'll have the `st_other' attribute correctly set to
one of standard MIPS/MIPS16/microMIPS encoding.
Here's the resulting change. It adds a couple of new `gdbarch' hooks,
one to update symbol information with the ISA bit lost in
`_bfd_mips_elf_symbol_processing', and two other ones to adjust DWARF-2
records as they're processed. The ISA bit is set in each address
handled according to information retrieved from the symbol table for the
symbol spanning the address if any; limits are adjusted based on the
address they point to related to the respective base address.
Additionally minimal symbol information has to be adjusted accordingly
in its gdbarch hook.
With these changes in place some complications with ISA bit juggling in
the PC that never fully worked can be removed from the MIPS backend.
Conversely, the generic dynamic linker event special breakpoint symbol
handler has to be updated to call the minimal symbol gdbarch hook to
record that the symbol is a MIPS16 or microMIPS address if applicable or
the breakpoint will be set at the wrong address and either fail to work
or cause SIGTRAPs (this is because the symbol is handled early on and
bypasses regular symbol processing).
4. Results obtained
The change fixes the example above -- to repeat only the crucial steps:
(gdb) break main
Breakpoint 1 at 0x400491: file foobar.c, line 23.
(gdb) run
Starting program: .../foobar
Breakpoint 1, main () at foobar.c:23
23 return foop ();
(gdb) print foo
$1 = {int (void)} 0x400681 <foo>
(gdb) set foop = bar
(gdb) advance bar
bar () at foobar.c:9
9 }
(gdb) disassemble
Dump of assembler code for function bar:
=> 0x0040068d <+0>: jr ra
0x0040068f <+2>: li v0,2
End of assembler dump.
(gdb) finish
Run till exit from #0 bar () at foobar.c:9
main () at foobar.c:24
24 }
Value returned is $2 = 2
(gdb) continue
Continuing.
[Inferior 1 (process 14128) exited with code 02]
(gdb)
-- excellent!
The change removes about 90 failures per MIPS16 multilib in mips-sde-elf
testing too, results for MIPS16 are now similar to that for standard
MIPS; microMIPS results are a bit worse because of host-I/O problems in
QEMU used instead of MIPSsim for microMIPS testing only:
=== gdb Summary ===
# of expected passes 14299
# of unexpected failures 187
# of expected failures 56
# of known failures 58
# of unresolved testcases 11
# of untested testcases 52
# of unsupported tests 174
MIPS16:
=== gdb Summary ===
# of expected passes 14298
# of unexpected failures 187
# of unexpected successes 2
# of expected failures 54
# of known failures 58
# of unresolved testcases 12
# of untested testcases 52
# of unsupported tests 174
microMIPS:
=== gdb Summary ===
# of expected passes 14149
# of unexpected failures 201
# of unexpected successes 2
# of expected failures 54
# of known failures 58
# of unresolved testcases 7
# of untested testcases 53
# of unsupported tests 175
2014-12-12 Maciej W. Rozycki <macro@codesourcery.com>
Maciej W. Rozycki <macro@mips.com>
Pedro Alves <pedro@codesourcery.com>
gdb/
* gdbarch.sh (elf_make_msymbol_special): Change type to `F',
remove `predefault' and `invalid_p' initializers.
(make_symbol_special): New architecture method.
(adjust_dwarf2_addr, adjust_dwarf2_line): Likewise.
(objfile, symbol): New declarations.
* arch-utils.h (default_elf_make_msymbol_special): Remove
prototype.
(default_make_symbol_special): New prototype.
(default_adjust_dwarf2_addr): Likewise.
(default_adjust_dwarf2_line): Likewise.
* mips-tdep.h (mips_unmake_compact_addr): New prototype.
* arch-utils.c (default_elf_make_msymbol_special): Remove
function.
(default_make_symbol_special): New function.
(default_adjust_dwarf2_addr): Likewise.
(default_adjust_dwarf2_line): Likewise.
* dwarf2-frame.c (decode_frame_entry_1): Call
`gdbarch_adjust_dwarf2_addr'.
* dwarf2loc.c (dwarf2_find_location_expression): Likewise.
* dwarf2read.c (create_addrmap_from_index): Likewise.
(process_psymtab_comp_unit_reader): Likewise.
(add_partial_symbol): Likewise.
(add_partial_subprogram): Likewise.
(process_full_comp_unit): Likewise.
(read_file_scope): Likewise.
(read_func_scope): Likewise. Call `gdbarch_make_symbol_special'.
(read_lexical_block_scope): Call `gdbarch_adjust_dwarf2_addr'.
(read_call_site_scope): Likewise.
(dwarf2_ranges_read): Likewise.
(dwarf2_record_block_ranges): Likewise.
(read_attribute_value): Likewise.
(dwarf_decode_lines_1): Call `gdbarch_adjust_dwarf2_line'.
(new_symbol_full): Call `gdbarch_adjust_dwarf2_addr'.
* elfread.c (elf_symtab_read): Don't call
`gdbarch_elf_make_msymbol_special' if unset.
* mips-linux-tdep.c (micromips_linux_sigframe_validate): Strip
the ISA bit from the PC.
* mips-tdep.c (mips_unmake_compact_addr): New function.
(mips_elf_make_msymbol_special): Set the ISA bit in the symbol's
address appropriately.
(mips_make_symbol_special): New function.
(mips_pc_is_mips): Set the ISA bit before symbol lookup.
(mips_pc_is_mips16): Likewise.
(mips_pc_is_micromips): Likewise.
(mips_pc_isa): Likewise.
(mips_adjust_dwarf2_addr): New function.
(mips_adjust_dwarf2_line): Likewise.
(mips_read_pc, mips_unwind_pc): Keep the ISA bit.
(mips_addr_bits_remove): Likewise.
(mips_skip_trampoline_code): Likewise.
(mips_write_pc): Don't set the ISA bit.
(mips_eabi_push_dummy_call): Likewise.
(mips_o64_push_dummy_call): Likewise.
(mips_gdbarch_init): Install `mips_make_symbol_special',
`mips_adjust_dwarf2_addr' and `mips_adjust_dwarf2_line' gdbarch
handlers.
* solib.c (gdb_bfd_lookup_symbol_from_symtab): Get
target-specific symbol address adjustments.
* gdbarch.h: Regenerate.
* gdbarch.c: Regenerate.
2014-12-12 Maciej W. Rozycki <macro@codesourcery.com>
gdb/testsuite/
* gdb.base/func-ptrs.c: New file.
* gdb.base/func-ptrs.exp: New file.
2014-12-12 21:31:53 +08:00
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/* Process an ELF symbol in the minimal symbol table in a backend-specific
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way. Normally this hook is supposed to do nothing, however if required,
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then this hook can be used to apply tranformations to symbols that are
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considered special in some way. For example the MIPS backend uses it
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to interpret `st_other' information to mark compressed code symbols so
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that they can be treated in the appropriate manner in the processing of
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the main symbol table and DWARF-2 records. */
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extern int gdbarch_elf_make_msymbol_special_p (struct gdbarch *gdbarch);
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2002-02-06 09:20:23 +08:00
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typedef void (gdbarch_elf_make_msymbol_special_ftype) (asymbol *sym, struct minimal_symbol *msym);
|
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extern void gdbarch_elf_make_msymbol_special (struct gdbarch *gdbarch, asymbol *sym, struct minimal_symbol *msym);
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extern void set_gdbarch_elf_make_msymbol_special (struct gdbarch *gdbarch, gdbarch_elf_make_msymbol_special_ftype *elf_make_msymbol_special);
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typedef void (gdbarch_coff_make_msymbol_special_ftype) (int val, struct minimal_symbol *msym);
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extern void gdbarch_coff_make_msymbol_special (struct gdbarch *gdbarch, int val, struct minimal_symbol *msym);
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extern void set_gdbarch_coff_make_msymbol_special (struct gdbarch *gdbarch, gdbarch_coff_make_msymbol_special_ftype *coff_make_msymbol_special);
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MIPS: Keep the ISA bit in compressed code addresses
1. Background information
The MIPS architecture, as originally designed and implemented in
mid-1980s has a uniform instruction word size that is 4 bytes, naturally
aligned. As such all MIPS instructions are located at addresses that
have their bits #1 and #0 set to zeroes, and any attempt to execute an
instruction from an address that has any of the two bits set to one
causes an address error exception. This may for example happen when a
jump-register instruction is executed whose register value used as the
jump target has any of these bits set.
Then in mid 1990s LSI sought a way to improve code density for their
TinyRISC family of MIPS cores and invented an alternatively encoded
instruction set in a joint effort with MIPS Technologies (then a
subsidiary of SGI). The new instruction set has been named the MIPS16
ASE (Application-Specific Extension) and uses a variable instruction
word size, which is 2 bytes (as the name of the ASE suggests) for most,
but there are a couple of exceptions that take 4 bytes, and then most of
the 2-byte instructions can be treated with a 2-byte extension prefix to
expand the range of the immediate operands used.
As a result instructions are no longer 4-byte aligned, instead they are
aligned to a multiple of 2. That left the bit #0 still unused for code
references, be it for the standard MIPS (i.e. as originally invented) or
for the MIPS16 instruction set, and based on that observation a clever
trick was invented that on one hand allowed the processor to be
seamlessly switched between the two instruction sets at any time at the
run time while on the other avoided the introduction of any special
control register to do that.
So it is the bit #0 of the instruction address that was chosen as the
selector and named the ISA bit. Any instruction executed at an even
address is interpreted as a standard MIPS instruction (the address still
has to have its bit #1 clear), any instruction executed at an odd
address is interpreted as a MIPS16 instruction.
To switch between modes ordinary jump instructions are used, such as
used for function calls and returns, specifically the bit #0 of the
source register used in jump-register instructions selects the execution
(ISA) mode for the following piece of code to be interpreted in.
Additionally new jump-immediate instructions were added that flipped the
ISA bit to select the opposite mode upon execution. They were
considered necessary to avoid the need to make register jumps in all
cases as the original jump-immediate instructions provided no way to
change the bit #0 at all.
This was all important for cases where standard MIPS and MIPS16 code had
to be mixed, either for compatibility with the existing binary code base
or to access resources not reachable from MIPS16 code (the MIPS16
instruction set only provides access to general-purpose registers, and
not for example floating-point unit registers or privileged coprocessor
0 registers) -- pieces of code in the opposite mode can be executed as
ordinary subroutine calls.
A similar approach has been more recently adopted for the MIPS16
replacement instruction set defined as the so called microMIPS ASE.
This is another instruction set encoding introduced to the MIPS
architecture. Just like the MIPS16 ASE, the microMIPS instruction set
uses a variable-length encoding, where each instruction takes a multiple
of 2 bytes. The ISA bit has been reused and for microMIPS-capable
processors selects between the standard MIPS and the microMIPS mode
instead.
2. Statement of the problem
To put it shortly, MIPS16 and microMIPS code pointers used by GDB are
different to these observed at the run time. This results in the same
expressions being evaluated producing different results in GDB and in
the program being debugged. Obviously it's the results obtained at the
run time that are correct (they define how the program behaves) and
therefore by definition the results obtained in GDB are incorrect.
A bit longer description will record that obviously at the run time the
ISA bit has to be set correctly (refer to background information above
if unsure why so) or the program will not run as expected. This is
recorded in all the executable file structures used at the run time: the
dynamic symbol table (but not always the static one!), the GOT, and
obviously in all the addresses embedded in code or data of the program
itself, calculated by applying the appropriate relocations at the static
link time.
While a program is being processed by GDB, the ISA bit is stripped off
from any code addresses, presumably to make them the same as the
respective raw memory byte address used by the processor to access the
instruction in the instruction fetch access cycle. This stripping is
actually performed outside GDB proper, in BFD, specifically
_bfd_mips_elf_symbol_processing (elfxx-mips.c, see the piece of code at
the very bottom of that function, starting with an: "If this is an
odd-valued function symbol, assume it's a MIPS16 or microMIPS one."
comment).
This function is also responsible for symbol table dumps made by
`objdump' too, so you'll never see the ISA bit reported there by that
tool, you need to use `readelf'.
This is however unlike what is ever done at the run time, the ISA bit
once present is never stripped off, for example a cast like this:
(short *) main
will not strip the ISA bit off and if the resulting pointer is intended
to be used to access instructions as data, for example for software
instruction decoding (like for fault recovery or emulation in a signal
handler) or for self-modifying code then the bit still has to be
stripped off by an explicit AND operation.
This is probably best illustrated with a simple real program example.
Let's consider the following simple program:
$ cat foobar.c
int __attribute__ ((mips16)) foo (void)
{
return 1;
}
int __attribute__ ((mips16)) bar (void)
{
return 2;
}
int __attribute__ ((nomips16)) foo32 (void)
{
return 3;
}
int (*foo32p) (void) = foo32;
int (*foop) (void) = foo;
int fooi = (int) foo;
int
main (void)
{
return foop ();
}
$
This is plain C with no odd tricks, except from the instruction mode
attributes. They are not necessary to trigger this problem, I just put
them here so that the program can be contained in a single source file
and to make it obvious which function is MIPS16 code and which is not.
Let's try it with Linux, so that everyone can repeat this experiment:
$ mips-linux-gnu-gcc -mips16 -g -O2 -o foobar foobar.c
$
Let's have a look at some interesting symbols:
$ mips-linux-gnu-readelf -s foobar | egrep 'table|foo|bar'
Symbol table '.dynsym' contains 7 entries:
Symbol table '.symtab' contains 95 entries:
55: 00000000 0 FILE LOCAL DEFAULT ABS foobar.c
66: 0040068c 4 FUNC GLOBAL DEFAULT [MIPS16] 12 bar
68: 00410848 4 OBJECT GLOBAL DEFAULT 21 foo32p
70: 00410844 4 OBJECT GLOBAL DEFAULT 21 foop
78: 00400684 8 FUNC GLOBAL DEFAULT 12 foo32
80: 00400680 4 FUNC GLOBAL DEFAULT [MIPS16] 12 foo
88: 00410840 4 OBJECT GLOBAL DEFAULT 21 fooi
$
Hmm, no sight of the ISA bit, but notice how foo and bar (but not
foo32!) have been marked as MIPS16 functions (ELF symbol structure's
`st_other' field is used for that).
So let's try to run and poke at this program with GDB. I'll be using a
native system for simplicity (I'll be using ellipses here and there to
remove unrelated clutter):
$ ./foobar
$ echo $?
1
$
So far, so good.
$ gdb ./foobar
[...]
(gdb) break main
Breakpoint 1 at 0x400490: file foobar.c, line 23.
(gdb) run
Starting program: .../foobar
Breakpoint 1, main () at foobar.c:23
23 return foop ();
(gdb)
Yay, it worked! OK, so let's poke at it:
(gdb) print main
$1 = {int (void)} 0x400490 <main>
(gdb) print foo32
$2 = {int (void)} 0x400684 <foo32>
(gdb) print foo32p
$3 = (int (*)(void)) 0x400684 <foo32>
(gdb) print bar
$4 = {int (void)} 0x40068c <bar>
(gdb) print foo
$5 = {int (void)} 0x400680 <foo>
(gdb) print foop
$6 = (int (*)(void)) 0x400681 <foo>
(gdb)
A-ha! Here's the difference and finally the ISA bit!
(gdb) print /x fooi
$7 = 0x400681
(gdb) p/x $pc
p/x $pc
$8 = 0x400491
(gdb)
And here as well...
(gdb) advance foo
foo () at foobar.c:4
4 }
(gdb) disassemble
Dump of assembler code for function foo:
0x00400680 <+0>: jr ra
0x00400682 <+2>: li v0,1
End of assembler dump.
(gdb) finish
Run till exit from #0 foo () at foobar.c:4
main () at foobar.c:24
24 }
Value returned is $9 = 1
(gdb) continue
Continuing.
[Inferior 1 (process 14103) exited with code 01]
(gdb)
So let's be a bit inquisitive...
(gdb) run
Starting program: .../foobar
Breakpoint 1, main () at foobar.c:23
23 return foop ();
(gdb)
Actually we do not like to run foo here at all. Let's run bar instead!
(gdb) set foop = bar
(gdb) print foop
$10 = (int (*)(void)) 0x40068c <bar>
(gdb)
Hmm, no ISA bit. Is it going to work?
(gdb) advance bar
bar () at foobar.c:9
9 }
(gdb) p/x $pc
$11 = 0x40068c
(gdb) disassemble
Dump of assembler code for function bar:
=> 0x0040068c <+0>: jr ra
0x0040068e <+2>: li v0,2
End of assembler dump.
(gdb) finish
Run till exit from #0 bar () at foobar.c:9
Program received signal SIGILL, Illegal instruction.
bar () at foobar.c:9
9 }
(gdb)
Oops!
(gdb) p/x $pc
$12 = 0x40068c
(gdb)
We're still there!
(gdb) continue
Continuing.
Program terminated with signal SIGILL, Illegal instruction.
The program no longer exists.
(gdb)
So let's try something else:
(gdb) run
Starting program: .../foobar
Breakpoint 1, main () at foobar.c:23
23 return foop ();
(gdb) set foop = foo
(gdb) advance foo
foo () at foobar.c:4
4 }
(gdb) disassemble
Dump of assembler code for function foo:
=> 0x00400680 <+0>: jr ra
0x00400682 <+2>: li v0,1
End of assembler dump.
(gdb) finish
Run till exit from #0 foo () at foobar.c:4
Program received signal SIGILL, Illegal instruction.
foo () at foobar.c:4
4 }
(gdb) continue
Continuing.
Program terminated with signal SIGILL, Illegal instruction.
The program no longer exists.
(gdb)
The same problem!
(gdb) run
Starting program:
/net/build2-lucid-cs/scratch/macro/mips-linux-fsf-gcc/isa-bit/foobar
Breakpoint 1, main () at foobar.c:23
23 return foop ();
(gdb) set foop = foo32
(gdb) advance foo32
foo32 () at foobar.c:14
14 }
(gdb) disassemble
Dump of assembler code for function foo32:
=> 0x00400684 <+0>: jr ra
0x00400688 <+4>: li v0,3
End of assembler dump.
(gdb) finish
Run till exit from #0 foo32 () at foobar.c:14
main () at foobar.c:24
24 }
Value returned is $14 = 3
(gdb) continue
Continuing.
[Inferior 1 (process 14113) exited with code 03]
(gdb)
That did work though, so it's the ISA bit only!
(gdb) quit
Enough!
That's the tip of the iceberg only though. So let's rebuild the
executable with some dynamic symbols:
$ mips-linux-gnu-gcc -mips16 -Wl,--export-dynamic -g -O2 -o foobar-dyn foobar.c
$ mips-linux-gnu-readelf -s foobar-dyn | egrep 'table|foo|bar'
Symbol table '.dynsym' contains 32 entries:
6: 004009cd 4 FUNC GLOBAL DEFAULT 12 bar
8: 00410b88 4 OBJECT GLOBAL DEFAULT 21 foo32p
9: 00410b84 4 OBJECT GLOBAL DEFAULT 21 foop
15: 004009c4 8 FUNC GLOBAL DEFAULT 12 foo32
17: 004009c1 4 FUNC GLOBAL DEFAULT 12 foo
25: 00410b80 4 OBJECT GLOBAL DEFAULT 21 fooi
Symbol table '.symtab' contains 95 entries:
55: 00000000 0 FILE LOCAL DEFAULT ABS foobar.c
69: 004009cd 4 FUNC GLOBAL DEFAULT 12 bar
71: 00410b88 4 OBJECT GLOBAL DEFAULT 21 foo32p
72: 00410b84 4 OBJECT GLOBAL DEFAULT 21 foop
79: 004009c4 8 FUNC GLOBAL DEFAULT 12 foo32
81: 004009c1 4 FUNC GLOBAL DEFAULT 12 foo
89: 00410b80 4 OBJECT GLOBAL DEFAULT 21 fooi
$
OK, now the ISA bit is there for a change, but the MIPS16 `st_other'
attribute gone, hmm... What does `objdump' do then:
$ mips-linux-gnu-objdump -Tt foobar-dyn | egrep 'SYMBOL|foo|bar'
foobar-dyn: file format elf32-tradbigmips
SYMBOL TABLE:
00000000 l df *ABS* 00000000 foobar.c
004009cc g F .text 00000004 0xf0 bar
00410b88 g O .data 00000004 foo32p
00410b84 g O .data 00000004 foop
004009c4 g F .text 00000008 foo32
004009c0 g F .text 00000004 0xf0 foo
00410b80 g O .data 00000004 fooi
DYNAMIC SYMBOL TABLE:
004009cc g DF .text 00000004 Base 0xf0 bar
00410b88 g DO .data 00000004 Base foo32p
00410b84 g DO .data 00000004 Base foop
004009c4 g DF .text 00000008 Base foo32
004009c0 g DF .text 00000004 Base 0xf0 foo
00410b80 g DO .data 00000004 Base fooi
$
Hmm, the attribute (0xf0, printed raw) is back, and the ISA bit gone
again.
Let's have a look at some DWARF-2 records GDB uses (I'll be stripping
off a lot here for brevity) -- debug info:
$ mips-linux-gnu-readelf -wi foobar
Contents of the .debug_info section:
[...]
Compilation Unit @ offset 0x88:
Length: 0xbb (32-bit)
Version: 4
Abbrev Offset: 62
Pointer Size: 4
<0><93>: Abbrev Number: 1 (DW_TAG_compile_unit)
<94> DW_AT_producer : (indirect string, offset: 0x19e): GNU C 4.8.0 20120513 (experimental) -meb -mips16 -march=mips32r2 -mhard-float -mllsc -mplt -mno-synci -mno-shared -mabi=32 -g -O2
<98> DW_AT_language : 1 (ANSI C)
<99> DW_AT_name : (indirect string, offset: 0x190): foobar.c
<9d> DW_AT_comp_dir : (indirect string, offset: 0x225): [...]
<a1> DW_AT_ranges : 0x0
<a5> DW_AT_low_pc : 0x0
<a9> DW_AT_stmt_list : 0x27
<1><ad>: Abbrev Number: 2 (DW_TAG_subprogram)
<ae> DW_AT_external : 1
<ae> DW_AT_name : foo
<b2> DW_AT_decl_file : 1
<b3> DW_AT_decl_line : 1
<b4> DW_AT_prototyped : 1
<b4> DW_AT_type : <0xc2>
<b8> DW_AT_low_pc : 0x400680
<bc> DW_AT_high_pc : 0x400684
<c0> DW_AT_frame_base : 1 byte block: 9c (DW_OP_call_frame_cfa)
<c2> DW_AT_GNU_all_call_sites: 1
<1><c2>: Abbrev Number: 3 (DW_TAG_base_type)
<c3> DW_AT_byte_size : 4
<c4> DW_AT_encoding : 5 (signed)
<c5> DW_AT_name : int
<1><c9>: Abbrev Number: 4 (DW_TAG_subprogram)
<ca> DW_AT_external : 1
<ca> DW_AT_name : (indirect string, offset: 0x18a): foo32
<ce> DW_AT_decl_file : 1
<cf> DW_AT_decl_line : 11
<d0> DW_AT_prototyped : 1
<d0> DW_AT_type : <0xc2>
<d4> DW_AT_low_pc : 0x400684
<d8> DW_AT_high_pc : 0x40068c
<dc> DW_AT_frame_base : 1 byte block: 9c (DW_OP_call_frame_cfa)
<de> DW_AT_GNU_all_call_sites: 1
<1><de>: Abbrev Number: 2 (DW_TAG_subprogram)
<df> DW_AT_external : 1
<df> DW_AT_name : bar
<e3> DW_AT_decl_file : 1
<e4> DW_AT_decl_line : 6
<e5> DW_AT_prototyped : 1
<e5> DW_AT_type : <0xc2>
<e9> DW_AT_low_pc : 0x40068c
<ed> DW_AT_high_pc : 0x400690
<f1> DW_AT_frame_base : 1 byte block: 9c (DW_OP_call_frame_cfa)
<f3> DW_AT_GNU_all_call_sites: 1
<1><f3>: Abbrev Number: 5 (DW_TAG_subprogram)
<f4> DW_AT_external : 1
<f4> DW_AT_name : (indirect string, offset: 0x199): main
<f8> DW_AT_decl_file : 1
<f9> DW_AT_decl_line : 21
<fa> DW_AT_prototyped : 1
<fa> DW_AT_type : <0xc2>
<fe> DW_AT_low_pc : 0x400490
<102> DW_AT_high_pc : 0x4004a4
<106> DW_AT_frame_base : 1 byte block: 9c (DW_OP_call_frame_cfa)
<108> DW_AT_GNU_all_tail_call_sites: 1
[...]
$
-- no sign of the ISA bit anywhere -- frame info:
$ mips-linux-gnu-readelf -wf foobar
[...]
Contents of the .debug_frame section:
00000000 0000000c ffffffff CIE
Version: 1
Augmentation: ""
Code alignment factor: 1
Data alignment factor: -4
Return address column: 31
DW_CFA_def_cfa_register: r29
DW_CFA_nop
00000010 0000000c 00000000 FDE cie=00000000 pc=00400680..00400684
00000020 0000000c 00000000 FDE cie=00000000 pc=00400684..0040068c
00000030 0000000c 00000000 FDE cie=00000000 pc=0040068c..00400690
00000040 00000018 00000000 FDE cie=00000000 pc=00400490..004004a4
DW_CFA_advance_loc: 6 to 00400496
DW_CFA_def_cfa_offset: 32
DW_CFA_offset: r31 at cfa-4
DW_CFA_advance_loc: 6 to 0040049c
DW_CFA_restore: r31
DW_CFA_def_cfa_offset: 0
DW_CFA_nop
DW_CFA_nop
DW_CFA_nop
[...]
$
-- no sign of the ISA bit anywhere -- range info (GDB doesn't use arange):
$ mips-linux-gnu-readelf -wR foobar
Contents of the .debug_ranges section:
Offset Begin End
00000000 00400680 00400690
00000000 00400490 004004a4
00000000 <End of list>
$
-- no sign of the ISA bit anywhere -- line info:
$ mips-linux-gnu-readelf -wl foobar
Raw dump of debug contents of section .debug_line:
[...]
Offset: 0x27
Length: 78
DWARF Version: 2
Prologue Length: 31
Minimum Instruction Length: 1
Initial value of 'is_stmt': 1
Line Base: -5
Line Range: 14
Opcode Base: 13
Opcodes:
Opcode 1 has 0 args
Opcode 2 has 1 args
Opcode 3 has 1 args
Opcode 4 has 1 args
Opcode 5 has 1 args
Opcode 6 has 0 args
Opcode 7 has 0 args
Opcode 8 has 0 args
Opcode 9 has 1 args
Opcode 10 has 0 args
Opcode 11 has 0 args
Opcode 12 has 1 args
The Directory Table is empty.
The File Name Table:
Entry Dir Time Size Name
1 0 0 0 foobar.c
Line Number Statements:
Extended opcode 2: set Address to 0x400681
Special opcode 6: advance Address by 0 to 0x400681 and Line by 1 to 2
Special opcode 7: advance Address by 0 to 0x400681 and Line by 2 to 4
Special opcode 55: advance Address by 3 to 0x400684 and Line by 8 to 12
Special opcode 7: advance Address by 0 to 0x400684 and Line by 2 to 14
Advance Line by -7 to 7
Special opcode 131: advance Address by 9 to 0x40068d and Line by 0 to 7
Special opcode 7: advance Address by 0 to 0x40068d and Line by 2 to 9
Advance PC by 3 to 0x400690
Extended opcode 1: End of Sequence
Extended opcode 2: set Address to 0x400491
Advance Line by 21 to 22
Copy
Special opcode 6: advance Address by 0 to 0x400491 and Line by 1 to 23
Special opcode 60: advance Address by 4 to 0x400495 and Line by -1 to 22
Special opcode 34: advance Address by 2 to 0x400497 and Line by 1 to 23
Special opcode 62: advance Address by 4 to 0x40049b and Line by 1 to 24
Special opcode 32: advance Address by 2 to 0x40049d and Line by -1 to 23
Special opcode 6: advance Address by 0 to 0x40049d and Line by 1 to 24
Advance PC by 7 to 0x4004a4
Extended opcode 1: End of Sequence
[...]
-- a-ha, the ISA bit is there! However it's not always right for some
reason, I don't have a small test case to show it, but here's an excerpt
from MIPS16 libc, a prologue of a function:
00019630 <__libc_init_first>:
19630: e8a0 jrc ra
19632: 6500 nop
00019634 <_init>:
19634: f000 6a11 li v0,17
19638: f7d8 0b08 la v1,15e00 <_DYNAMIC+0x15c54>
1963c: f400 3240 sll v0,16
19640: e269 addu v0,v1
19642: 659a move gp,v0
19644: 64f6 save 48,ra,s0-s1
19646: 671c move s0,gp
19648: d204 sw v0,16(sp)
1964a: f352 984c lw v0,-27828(s0)
1964e: 6724 move s1,a0
and the corresponding DWARF-2 line info:
Line Number Statements:
Extended opcode 2: set Address to 0x19631
Advance Line by 44 to 45
Copy
Special opcode 8: advance Address by 0 to 0x19631 and Line by 3 to 48
Special opcode 66: advance Address by 4 to 0x19635 and Line by 5 to 53
Advance PC by constant 17 to 0x19646
Special opcode 25: advance Address by 1 to 0x19647 and Line by 6 to 59
Advance Line by -6 to 53
Special opcode 33: advance Address by 2 to 0x19649 and Line by 0 to 53
Special opcode 39: advance Address by 2 to 0x1964b and Line by 6 to 59
Advance Line by -6 to 53
Special opcode 61: advance Address by 4 to 0x1964f and Line by 0 to 53
-- see that "Advance PC by constant 17" there? It clears the ISA bit,
however code at 0x19646 is not standard MIPS code at all. For some
reason the constant is always 17, I've never seen DW_LNS_const_add_pc
used with any other value -- is that a binutils bug or what?
3. Solution:
I think we should retain the value of the ISA bit in code references,
that is effectively treat them as cookies as they indeed are (although
trivially calculated) rather than raw memory byte addresses.
In a perfect world both the static symbol table and the respective
DWARF-2 records should be fixed to include the ISA bit in all the cases.
I think however that this is infeasible.
All the uses of `_bfd_mips_elf_symbol_processing' can not necessarily be
tracked down. This function is used by `elf_slurp_symbol_table' that in
turn is used by `bfd_canonicalize_symtab' and
`bfd_canonicalize_dynamic_symtab', which are public interfaces.
Similarly DWARF-2 records are used outside GDB, one notable if a bit
questionable is the exception unwinder (libgcc/unwind-dw2.c) -- I have
identified at least bits in `execute_cfa_program' and
`uw_frame_state_for', both around the calls to `_Unwind_IsSignalFrame',
that would need an update as they effectively flip the ISA bit freely;
see also the comment about MASK_RETURN_ADDR in gcc/config/mips/mips.h.
But there may be more places. Any change in how DWARF-2 records are
produced would require an update there and would cause compatibility
problems with libgcc.a binaries already distributed; given that this is
a static library a complex change involving function renames would
likely be required.
I propose therefore to accept the existing inconsistencies and deal with
them entirely within GDB. I have figured out that the ISA bit lost in
various places can still be recovered as long as we have symbol
information -- that'll have the `st_other' attribute correctly set to
one of standard MIPS/MIPS16/microMIPS encoding.
Here's the resulting change. It adds a couple of new `gdbarch' hooks,
one to update symbol information with the ISA bit lost in
`_bfd_mips_elf_symbol_processing', and two other ones to adjust DWARF-2
records as they're processed. The ISA bit is set in each address
handled according to information retrieved from the symbol table for the
symbol spanning the address if any; limits are adjusted based on the
address they point to related to the respective base address.
Additionally minimal symbol information has to be adjusted accordingly
in its gdbarch hook.
With these changes in place some complications with ISA bit juggling in
the PC that never fully worked can be removed from the MIPS backend.
Conversely, the generic dynamic linker event special breakpoint symbol
handler has to be updated to call the minimal symbol gdbarch hook to
record that the symbol is a MIPS16 or microMIPS address if applicable or
the breakpoint will be set at the wrong address and either fail to work
or cause SIGTRAPs (this is because the symbol is handled early on and
bypasses regular symbol processing).
4. Results obtained
The change fixes the example above -- to repeat only the crucial steps:
(gdb) break main
Breakpoint 1 at 0x400491: file foobar.c, line 23.
(gdb) run
Starting program: .../foobar
Breakpoint 1, main () at foobar.c:23
23 return foop ();
(gdb) print foo
$1 = {int (void)} 0x400681 <foo>
(gdb) set foop = bar
(gdb) advance bar
bar () at foobar.c:9
9 }
(gdb) disassemble
Dump of assembler code for function bar:
=> 0x0040068d <+0>: jr ra
0x0040068f <+2>: li v0,2
End of assembler dump.
(gdb) finish
Run till exit from #0 bar () at foobar.c:9
main () at foobar.c:24
24 }
Value returned is $2 = 2
(gdb) continue
Continuing.
[Inferior 1 (process 14128) exited with code 02]
(gdb)
-- excellent!
The change removes about 90 failures per MIPS16 multilib in mips-sde-elf
testing too, results for MIPS16 are now similar to that for standard
MIPS; microMIPS results are a bit worse because of host-I/O problems in
QEMU used instead of MIPSsim for microMIPS testing only:
=== gdb Summary ===
# of expected passes 14299
# of unexpected failures 187
# of expected failures 56
# of known failures 58
# of unresolved testcases 11
# of untested testcases 52
# of unsupported tests 174
MIPS16:
=== gdb Summary ===
# of expected passes 14298
# of unexpected failures 187
# of unexpected successes 2
# of expected failures 54
# of known failures 58
# of unresolved testcases 12
# of untested testcases 52
# of unsupported tests 174
microMIPS:
=== gdb Summary ===
# of expected passes 14149
# of unexpected failures 201
# of unexpected successes 2
# of expected failures 54
# of known failures 58
# of unresolved testcases 7
# of untested testcases 53
# of unsupported tests 175
2014-12-12 Maciej W. Rozycki <macro@codesourcery.com>
Maciej W. Rozycki <macro@mips.com>
Pedro Alves <pedro@codesourcery.com>
gdb/
* gdbarch.sh (elf_make_msymbol_special): Change type to `F',
remove `predefault' and `invalid_p' initializers.
(make_symbol_special): New architecture method.
(adjust_dwarf2_addr, adjust_dwarf2_line): Likewise.
(objfile, symbol): New declarations.
* arch-utils.h (default_elf_make_msymbol_special): Remove
prototype.
(default_make_symbol_special): New prototype.
(default_adjust_dwarf2_addr): Likewise.
(default_adjust_dwarf2_line): Likewise.
* mips-tdep.h (mips_unmake_compact_addr): New prototype.
* arch-utils.c (default_elf_make_msymbol_special): Remove
function.
(default_make_symbol_special): New function.
(default_adjust_dwarf2_addr): Likewise.
(default_adjust_dwarf2_line): Likewise.
* dwarf2-frame.c (decode_frame_entry_1): Call
`gdbarch_adjust_dwarf2_addr'.
* dwarf2loc.c (dwarf2_find_location_expression): Likewise.
* dwarf2read.c (create_addrmap_from_index): Likewise.
(process_psymtab_comp_unit_reader): Likewise.
(add_partial_symbol): Likewise.
(add_partial_subprogram): Likewise.
(process_full_comp_unit): Likewise.
(read_file_scope): Likewise.
(read_func_scope): Likewise. Call `gdbarch_make_symbol_special'.
(read_lexical_block_scope): Call `gdbarch_adjust_dwarf2_addr'.
(read_call_site_scope): Likewise.
(dwarf2_ranges_read): Likewise.
(dwarf2_record_block_ranges): Likewise.
(read_attribute_value): Likewise.
(dwarf_decode_lines_1): Call `gdbarch_adjust_dwarf2_line'.
(new_symbol_full): Call `gdbarch_adjust_dwarf2_addr'.
* elfread.c (elf_symtab_read): Don't call
`gdbarch_elf_make_msymbol_special' if unset.
* mips-linux-tdep.c (micromips_linux_sigframe_validate): Strip
the ISA bit from the PC.
* mips-tdep.c (mips_unmake_compact_addr): New function.
(mips_elf_make_msymbol_special): Set the ISA bit in the symbol's
address appropriately.
(mips_make_symbol_special): New function.
(mips_pc_is_mips): Set the ISA bit before symbol lookup.
(mips_pc_is_mips16): Likewise.
(mips_pc_is_micromips): Likewise.
(mips_pc_isa): Likewise.
(mips_adjust_dwarf2_addr): New function.
(mips_adjust_dwarf2_line): Likewise.
(mips_read_pc, mips_unwind_pc): Keep the ISA bit.
(mips_addr_bits_remove): Likewise.
(mips_skip_trampoline_code): Likewise.
(mips_write_pc): Don't set the ISA bit.
(mips_eabi_push_dummy_call): Likewise.
(mips_o64_push_dummy_call): Likewise.
(mips_gdbarch_init): Install `mips_make_symbol_special',
`mips_adjust_dwarf2_addr' and `mips_adjust_dwarf2_line' gdbarch
handlers.
* solib.c (gdb_bfd_lookup_symbol_from_symtab): Get
target-specific symbol address adjustments.
* gdbarch.h: Regenerate.
* gdbarch.c: Regenerate.
2014-12-12 Maciej W. Rozycki <macro@codesourcery.com>
gdb/testsuite/
* gdb.base/func-ptrs.c: New file.
* gdb.base/func-ptrs.exp: New file.
2014-12-12 21:31:53 +08:00
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/* Process a symbol in the main symbol table in a backend-specific way.
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Normally this hook is supposed to do nothing, however if required,
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then this hook can be used to apply tranformations to symbols that
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are considered special in some way. This is currently used by the
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MIPS backend to make sure compressed code symbols have the ISA bit
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set. This in turn is needed for symbol values seen in GDB to match
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the values used at the runtime by the program itself, for function
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and label references. */
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typedef void (gdbarch_make_symbol_special_ftype) (struct symbol *sym, struct objfile *objfile);
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extern void gdbarch_make_symbol_special (struct gdbarch *gdbarch, struct symbol *sym, struct objfile *objfile);
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extern void set_gdbarch_make_symbol_special (struct gdbarch *gdbarch, gdbarch_make_symbol_special_ftype *make_symbol_special);
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/* Adjust the address retrieved from a DWARF-2 record other than a line
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entry in a backend-specific way. Normally this hook is supposed to
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return the address passed unchanged, however if that is incorrect for
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any reason, then this hook can be used to fix the address up in the
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required manner. This is currently used by the MIPS backend to make
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sure addresses in FDE, range records, etc. referring to compressed
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code have the ISA bit set, matching line information and the symbol
|
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|
|
|
table. */
|
|
|
|
|
|
|
|
|
|
typedef CORE_ADDR (gdbarch_adjust_dwarf2_addr_ftype) (CORE_ADDR pc);
|
|
|
|
|
extern CORE_ADDR gdbarch_adjust_dwarf2_addr (struct gdbarch *gdbarch, CORE_ADDR pc);
|
|
|
|
|
extern void set_gdbarch_adjust_dwarf2_addr (struct gdbarch *gdbarch, gdbarch_adjust_dwarf2_addr_ftype *adjust_dwarf2_addr);
|
|
|
|
|
|
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|
|
/* Adjust the address updated by a line entry in a backend-specific way.
|
|
|
|
|
Normally this hook is supposed to return the address passed unchanged,
|
|
|
|
|
however in the case of inconsistencies in these records, this hook can
|
|
|
|
|
be used to fix them up in the required manner. This is currently used
|
|
|
|
|
by the MIPS backend to make sure all line addresses in compressed code
|
|
|
|
|
are presented with the ISA bit set, which is not always the case. This
|
|
|
|
|
in turn ensures breakpoint addresses are correctly matched against the
|
|
|
|
|
stop PC. */
|
|
|
|
|
|
|
|
|
|
typedef CORE_ADDR (gdbarch_adjust_dwarf2_line_ftype) (CORE_ADDR addr, int rel);
|
|
|
|
|
extern CORE_ADDR gdbarch_adjust_dwarf2_line (struct gdbarch *gdbarch, CORE_ADDR addr, int rel);
|
|
|
|
|
extern void set_gdbarch_adjust_dwarf2_line (struct gdbarch *gdbarch, gdbarch_adjust_dwarf2_line_ftype *adjust_dwarf2_line);
|
|
|
|
|
|
2002-10-03 07:28:54 +08:00
|
|
|
extern int gdbarch_cannot_step_breakpoint (struct gdbarch *gdbarch);
|
|
|
|
|
extern void set_gdbarch_cannot_step_breakpoint (struct gdbarch *gdbarch, int cannot_step_breakpoint);
|
|
|
|
|
|
2002-10-09 19:59:54 +08:00
|
|
|
extern int gdbarch_have_nonsteppable_watchpoint (struct gdbarch *gdbarch);
|
|
|
|
|
extern void set_gdbarch_have_nonsteppable_watchpoint (struct gdbarch *gdbarch, int have_nonsteppable_watchpoint);
|
|
|
|
|
|
2002-10-17 04:50:22 +08:00
|
|
|
extern int gdbarch_address_class_type_flags_p (struct gdbarch *gdbarch);
|
|
|
|
|
|
|
|
|
|
typedef int (gdbarch_address_class_type_flags_ftype) (int byte_size, int dwarf2_addr_class);
|
|
|
|
|
extern int gdbarch_address_class_type_flags (struct gdbarch *gdbarch, int byte_size, int dwarf2_addr_class);
|
|
|
|
|
extern void set_gdbarch_address_class_type_flags (struct gdbarch *gdbarch, gdbarch_address_class_type_flags_ftype *address_class_type_flags);
|
|
|
|
|
|
|
|
|
|
extern int gdbarch_address_class_type_flags_to_name_p (struct gdbarch *gdbarch);
|
|
|
|
|
|
2002-12-12 04:19:39 +08:00
|
|
|
typedef const char * (gdbarch_address_class_type_flags_to_name_ftype) (struct gdbarch *gdbarch, int type_flags);
|
|
|
|
|
extern const char * gdbarch_address_class_type_flags_to_name (struct gdbarch *gdbarch, int type_flags);
|
2002-10-17 04:50:22 +08:00
|
|
|
extern void set_gdbarch_address_class_type_flags_to_name (struct gdbarch *gdbarch, gdbarch_address_class_type_flags_to_name_ftype *address_class_type_flags_to_name);
|
|
|
|
|
|
2014-01-17 17:54:56 +08:00
|
|
|
/* Return the appropriate type_flags for the supplied address class.
|
|
|
|
|
This function should return 1 if the address class was recognized and
|
|
|
|
|
type_flags was set, zero otherwise. */
|
|
|
|
|
|
2002-10-17 04:50:22 +08:00
|
|
|
extern int gdbarch_address_class_name_to_type_flags_p (struct gdbarch *gdbarch);
|
|
|
|
|
|
2002-12-12 04:19:39 +08:00
|
|
|
typedef int (gdbarch_address_class_name_to_type_flags_ftype) (struct gdbarch *gdbarch, const char *name, int *type_flags_ptr);
|
|
|
|
|
extern int gdbarch_address_class_name_to_type_flags (struct gdbarch *gdbarch, const char *name, int *type_flags_ptr);
|
2002-10-17 04:50:22 +08:00
|
|
|
extern void set_gdbarch_address_class_name_to_type_flags (struct gdbarch *gdbarch, gdbarch_address_class_name_to_type_flags_ftype *address_class_name_to_type_flags);
|
|
|
|
|
|
2002-11-02 23:13:34 +08:00
|
|
|
/* Is a register in a group */
|
|
|
|
|
|
|
|
|
|
typedef int (gdbarch_register_reggroup_p_ftype) (struct gdbarch *gdbarch, int regnum, struct reggroup *reggroup);
|
|
|
|
|
extern int gdbarch_register_reggroup_p (struct gdbarch *gdbarch, int regnum, struct reggroup *reggroup);
|
|
|
|
|
extern void set_gdbarch_register_reggroup_p (struct gdbarch *gdbarch, gdbarch_register_reggroup_p_ftype *register_reggroup_p);
|
|
|
|
|
|
2003-09-30 21:29:44 +08:00
|
|
|
/* Fetch the pointer to the ith function argument. */
|
2003-06-02 10:54:35 +08:00
|
|
|
|
|
|
|
|
extern int gdbarch_fetch_pointer_argument_p (struct gdbarch *gdbarch);
|
|
|
|
|
|
|
|
|
|
typedef CORE_ADDR (gdbarch_fetch_pointer_argument_ftype) (struct frame_info *frame, int argi, struct type *type);
|
|
|
|
|
extern CORE_ADDR gdbarch_fetch_pointer_argument (struct gdbarch *gdbarch, struct frame_info *frame, int argi, struct type *type);
|
|
|
|
|
extern void set_gdbarch_fetch_pointer_argument (struct gdbarch *gdbarch, gdbarch_fetch_pointer_argument_ftype *fetch_pointer_argument);
|
|
|
|
|
|
Replace 'core_regset_sections' by iterator method
The core_regset_sections list in gdbarch (needed for multi-arch
capable core file generation support) is replaced by an iterator
method. Overall, this reduces the code a bit, and it allows for more
flexibility.
gdb/ChangeLog:
* amd64-linux-tdep.c (amd64_linux_regset_sections): Remove.
(amd64_linux_iterate_over_regset_sections): New.
(amd64_linux_init_abi_common): Don't install the regset section
list, but the new iterator in gdbarch.
* arm-linux-tdep.c (arm_linux_fpa_regset_sections)
(arm_linux_vfp_regset_sections): Remove. Move combined logic...
(arm_linux_iterate_over_regset_sections): ...here. New function.
(arm_linux_init_abi): Set iterator instead of section list.
* corelow.c (get_core_registers_cb): New function, logic moved
from...
(get_core_registers): ...loop body here. Use new iterator method
instead of walking through the regset section list.
* gdbarch.sh: Remove 'core_regset_sections'. New method
'iterate_over_regset_sections'. New typedef
'iterate_over_regset_sections_cb'.
* gdbarch.c: Regenerate.
* gdbarch.h: Likewise.
* i386-linux-tdep.c (i386_linux_regset_sections)
(i386_linux_sse_regset_sections, i386_linux_avx_regset_sections):
Remove.
(i386_linux_iterate_over_regset_sections): New.
(i386_linux_init_abi): Don't choose a regset section list, but
install new iterator in gdbarch.
* linux-tdep.c (struct linux_collect_regset_section_cb_data): New.
(linux_collect_regset_section_cb): New function, logic moved
from...
(linux_collect_thread_registers): ...loop body here. Use iterator
method instead of walking through list.
(linux_make_corefile_notes_1): Check for presence of iterator
method instead of regset section list.
* ppc-linux-tdep.c (ppc_linux_vsx_regset_sections)
(ppc_linux_vmx_regset_sections, ppc_linux_fp_regset_sections)
(ppc64_linux_vsx_regset_sections, ppc64_linux_vmx_regset_sections)
(ppc64_linux_fp_regset_sections): Remove. Move combined logic...
(ppc_linux_iterate_over_regset_sections): ...here. New function.
(ppc_linux_init_abi): Don't choose from above regset section
lists, but install new iterator in gdbarch.
* regset.h (struct core_regset_section): Remove.
* s390-linux-tdep.c (struct gdbarch_tdep): Add new fields
have_linux_v1, have_linux_v2, and have_tdb.
(s390_linux32_regset_sections, s390_linux32v1_regset_sections)
(s390_linux32v2_regset_sections, s390_linux64_regset_sections)
(s390_linux64v1_regset_sections, s390_linux64v2_regset_sections)
(s390x_linux64_regset_sections, s390x_linux64v1_regset_sections)
(s390x_linux64v2_regset_sections): Remove. Move combined logic...
(s390_iterate_over_regset_sections): ...here. New function. Use
new tdep fields.
(s390_gdbarch_init): Set new tdep fields. Don't choose from above
regset section lists, but install new iterator.
2014-09-04 23:26:43 +08:00
|
|
|
/* Iterate over all supported register notes in a core file. For each
|
|
|
|
|
supported register note section, the iterator must call CB and pass
|
|
|
|
|
CB_DATA unchanged. If REGCACHE is not NULL, the iterator can limit
|
|
|
|
|
the supported register note sections based on the current register
|
|
|
|
|
values. Otherwise it should enumerate all supported register note
|
|
|
|
|
sections. */
|
|
|
|
|
|
|
|
|
|
extern int gdbarch_iterate_over_regset_sections_p (struct gdbarch *gdbarch);
|
2008-05-25 00:32:01 +08:00
|
|
|
|
Replace 'core_regset_sections' by iterator method
The core_regset_sections list in gdbarch (needed for multi-arch
capable core file generation support) is replaced by an iterator
method. Overall, this reduces the code a bit, and it allows for more
flexibility.
gdb/ChangeLog:
* amd64-linux-tdep.c (amd64_linux_regset_sections): Remove.
(amd64_linux_iterate_over_regset_sections): New.
(amd64_linux_init_abi_common): Don't install the regset section
list, but the new iterator in gdbarch.
* arm-linux-tdep.c (arm_linux_fpa_regset_sections)
(arm_linux_vfp_regset_sections): Remove. Move combined logic...
(arm_linux_iterate_over_regset_sections): ...here. New function.
(arm_linux_init_abi): Set iterator instead of section list.
* corelow.c (get_core_registers_cb): New function, logic moved
from...
(get_core_registers): ...loop body here. Use new iterator method
instead of walking through the regset section list.
* gdbarch.sh: Remove 'core_regset_sections'. New method
'iterate_over_regset_sections'. New typedef
'iterate_over_regset_sections_cb'.
* gdbarch.c: Regenerate.
* gdbarch.h: Likewise.
* i386-linux-tdep.c (i386_linux_regset_sections)
(i386_linux_sse_regset_sections, i386_linux_avx_regset_sections):
Remove.
(i386_linux_iterate_over_regset_sections): New.
(i386_linux_init_abi): Don't choose a regset section list, but
install new iterator in gdbarch.
* linux-tdep.c (struct linux_collect_regset_section_cb_data): New.
(linux_collect_regset_section_cb): New function, logic moved
from...
(linux_collect_thread_registers): ...loop body here. Use iterator
method instead of walking through list.
(linux_make_corefile_notes_1): Check for presence of iterator
method instead of regset section list.
* ppc-linux-tdep.c (ppc_linux_vsx_regset_sections)
(ppc_linux_vmx_regset_sections, ppc_linux_fp_regset_sections)
(ppc64_linux_vsx_regset_sections, ppc64_linux_vmx_regset_sections)
(ppc64_linux_fp_regset_sections): Remove. Move combined logic...
(ppc_linux_iterate_over_regset_sections): ...here. New function.
(ppc_linux_init_abi): Don't choose from above regset section
lists, but install new iterator in gdbarch.
* regset.h (struct core_regset_section): Remove.
* s390-linux-tdep.c (struct gdbarch_tdep): Add new fields
have_linux_v1, have_linux_v2, and have_tdb.
(s390_linux32_regset_sections, s390_linux32v1_regset_sections)
(s390_linux32v2_regset_sections, s390_linux64_regset_sections)
(s390_linux64v1_regset_sections, s390_linux64v2_regset_sections)
(s390x_linux64_regset_sections, s390x_linux64v1_regset_sections)
(s390x_linux64v2_regset_sections): Remove. Move combined logic...
(s390_iterate_over_regset_sections): ...here. New function. Use
new tdep fields.
(s390_gdbarch_init): Set new tdep fields. Don't choose from above
regset section lists, but install new iterator.
2014-09-04 23:26:43 +08:00
|
|
|
typedef void (gdbarch_iterate_over_regset_sections_ftype) (struct gdbarch *gdbarch, iterate_over_regset_sections_cb *cb, void *cb_data, const struct regcache *regcache);
|
|
|
|
|
extern void gdbarch_iterate_over_regset_sections (struct gdbarch *gdbarch, iterate_over_regset_sections_cb *cb, void *cb_data, const struct regcache *regcache);
|
|
|
|
|
extern void set_gdbarch_iterate_over_regset_sections (struct gdbarch *gdbarch, gdbarch_iterate_over_regset_sections_ftype *iterate_over_regset_sections);
|
2008-05-25 00:32:01 +08:00
|
|
|
|
2012-01-20 17:56:56 +08:00
|
|
|
/* Create core file notes */
|
|
|
|
|
|
|
|
|
|
extern int gdbarch_make_corefile_notes_p (struct gdbarch *gdbarch);
|
|
|
|
|
|
|
|
|
|
typedef char * (gdbarch_make_corefile_notes_ftype) (struct gdbarch *gdbarch, bfd *obfd, int *note_size);
|
|
|
|
|
extern char * gdbarch_make_corefile_notes (struct gdbarch *gdbarch, bfd *obfd, int *note_size);
|
|
|
|
|
extern void set_gdbarch_make_corefile_notes (struct gdbarch *gdbarch, gdbarch_make_corefile_notes_ftype *make_corefile_notes);
|
|
|
|
|
|
2013-02-05 02:40:41 +08:00
|
|
|
/* The elfcore writer hook to use to write Linux prpsinfo notes to core
|
|
|
|
|
files. Most Linux architectures use the same prpsinfo32 or
|
|
|
|
|
prpsinfo64 layouts, and so won't need to provide this hook, as we
|
|
|
|
|
call the Linux generic routines in bfd to write prpsinfo notes by
|
|
|
|
|
default. */
|
|
|
|
|
|
|
|
|
|
extern int gdbarch_elfcore_write_linux_prpsinfo_p (struct gdbarch *gdbarch);
|
|
|
|
|
|
|
|
|
|
typedef char * (gdbarch_elfcore_write_linux_prpsinfo_ftype) (bfd *obfd, char *note_data, int *note_size, const struct elf_internal_linux_prpsinfo *info);
|
|
|
|
|
extern char * gdbarch_elfcore_write_linux_prpsinfo (struct gdbarch *gdbarch, bfd *obfd, char *note_data, int *note_size, const struct elf_internal_linux_prpsinfo *info);
|
|
|
|
|
extern void set_gdbarch_elfcore_write_linux_prpsinfo (struct gdbarch *gdbarch, gdbarch_elfcore_write_linux_prpsinfo_ftype *elfcore_write_linux_prpsinfo);
|
|
|
|
|
|
2012-01-20 17:59:15 +08:00
|
|
|
/* Find core file memory regions */
|
|
|
|
|
|
|
|
|
|
extern int gdbarch_find_memory_regions_p (struct gdbarch *gdbarch);
|
|
|
|
|
|
|
|
|
|
typedef int (gdbarch_find_memory_regions_ftype) (struct gdbarch *gdbarch, find_memory_region_ftype func, void *data);
|
|
|
|
|
extern int gdbarch_find_memory_regions (struct gdbarch *gdbarch, find_memory_region_ftype func, void *data);
|
|
|
|
|
extern void set_gdbarch_find_memory_regions (struct gdbarch *gdbarch, gdbarch_find_memory_regions_ftype *find_memory_regions);
|
|
|
|
|
|
2007-09-04 07:06:35 +08:00
|
|
|
/* Read offset OFFSET of TARGET_OBJECT_LIBRARIES formatted shared libraries list from
|
2014-01-27 12:56:56 +08:00
|
|
|
core file into buffer READBUF with length LEN. Return the number of bytes read
|
|
|
|
|
(zero indicates failure).
|
|
|
|
|
failed, otherwise, return the red length of READBUF. */
|
2007-09-04 07:06:35 +08:00
|
|
|
|
|
|
|
|
extern int gdbarch_core_xfer_shared_libraries_p (struct gdbarch *gdbarch);
|
|
|
|
|
|
2014-01-27 12:56:56 +08:00
|
|
|
typedef ULONGEST (gdbarch_core_xfer_shared_libraries_ftype) (struct gdbarch *gdbarch, gdb_byte *readbuf, ULONGEST offset, ULONGEST len);
|
|
|
|
|
extern ULONGEST gdbarch_core_xfer_shared_libraries (struct gdbarch *gdbarch, gdb_byte *readbuf, ULONGEST offset, ULONGEST len);
|
2007-09-04 07:06:35 +08:00
|
|
|
extern void set_gdbarch_core_xfer_shared_libraries (struct gdbarch *gdbarch, gdbarch_core_xfer_shared_libraries_ftype *core_xfer_shared_libraries);
|
|
|
|
|
|
ppc-aix core file relocation.
The current code attempts to provide relocation support when debugging
core files via the rs6000_xfer_partial method of the rs6000-nat
target_ops vector. However, this target_ops vector does not get pushed
on the target stack at all when debugging core files, thus bypassing
completely that part of the code.
This patch fixes the problem by extending corelow's core_xfer_partial
into handling the TARGET_OBJECT_LIBRARIES_AIX object.
gdb/ChangeLog:
* gdbarch.sh (core_xfer_shared_libraries_aix): New method.
* gdbarch.h, gdbarch.c: Regenerate.
* corelow.c (core_xfer_partial): Add TARGET_OBJECT_LIBRARIES_AIX
handling.
* rs6000-aix-tdep.h: New file.
* Makefile.in (HFILES_NO_SRCDIR): Add rs6000-aix-tdep.h.
* rs6000-aix-tdep.c: Include "rs6000-aix-tdep.h" and
"xml-utils.h".
(struct field_info, struct ld_info_desc): New types.
(ld_info32_desc, ld_info64_desc): New static constants.
(struct ld_info): New type.
(rs6000_aix_extract_ld_info): New function.
(rs6000_aix_shared_library_to_xml): Likewise.
(rs6000_aix_ld_info_to_xml): Likewise.
(rs6000_aix_core_xfer_shared_libraries_aix): Likewise.
(rs6000_aix_init_osabi): Add call to
set_gdbarch_core_xfer_shared_libraries_aix.
* rs6000-nat.c: Add "rs6000-aix-tdep.h" include.
Remove "xml-utils.h" include.
(LdInfo): Delete typedef.
(ARCH64_DECL, LDI_FIELD, LDI_NEXT, LDI_FD, LDI_FILENAME):
Delete macros.
(rs6000_ptrace_ldinfo): Change return type to gdb_byte *.
Adjust code accordingly.
(rs6000_core_ldinfo): Delete, folded into
rs6000_aix_core_xfer_shared_libraries_aix.
(rs6000_xfer_shared_library): Delete.
(rs6000_xfer_shared_libraries): Reimplement.
2013-05-15 20:26:14 +08:00
|
|
|
/* Read offset OFFSET of TARGET_OBJECT_LIBRARIES_AIX formatted shared
|
2014-01-27 12:56:56 +08:00
|
|
|
libraries list from core file into buffer READBUF with length LEN.
|
|
|
|
|
Return the number of bytes read (zero indicates failure). */
|
ppc-aix core file relocation.
The current code attempts to provide relocation support when debugging
core files via the rs6000_xfer_partial method of the rs6000-nat
target_ops vector. However, this target_ops vector does not get pushed
on the target stack at all when debugging core files, thus bypassing
completely that part of the code.
This patch fixes the problem by extending corelow's core_xfer_partial
into handling the TARGET_OBJECT_LIBRARIES_AIX object.
gdb/ChangeLog:
* gdbarch.sh (core_xfer_shared_libraries_aix): New method.
* gdbarch.h, gdbarch.c: Regenerate.
* corelow.c (core_xfer_partial): Add TARGET_OBJECT_LIBRARIES_AIX
handling.
* rs6000-aix-tdep.h: New file.
* Makefile.in (HFILES_NO_SRCDIR): Add rs6000-aix-tdep.h.
* rs6000-aix-tdep.c: Include "rs6000-aix-tdep.h" and
"xml-utils.h".
(struct field_info, struct ld_info_desc): New types.
(ld_info32_desc, ld_info64_desc): New static constants.
(struct ld_info): New type.
(rs6000_aix_extract_ld_info): New function.
(rs6000_aix_shared_library_to_xml): Likewise.
(rs6000_aix_ld_info_to_xml): Likewise.
(rs6000_aix_core_xfer_shared_libraries_aix): Likewise.
(rs6000_aix_init_osabi): Add call to
set_gdbarch_core_xfer_shared_libraries_aix.
* rs6000-nat.c: Add "rs6000-aix-tdep.h" include.
Remove "xml-utils.h" include.
(LdInfo): Delete typedef.
(ARCH64_DECL, LDI_FIELD, LDI_NEXT, LDI_FD, LDI_FILENAME):
Delete macros.
(rs6000_ptrace_ldinfo): Change return type to gdb_byte *.
Adjust code accordingly.
(rs6000_core_ldinfo): Delete, folded into
rs6000_aix_core_xfer_shared_libraries_aix.
(rs6000_xfer_shared_library): Delete.
(rs6000_xfer_shared_libraries): Reimplement.
2013-05-15 20:26:14 +08:00
|
|
|
|
|
|
|
|
extern int gdbarch_core_xfer_shared_libraries_aix_p (struct gdbarch *gdbarch);
|
|
|
|
|
|
2014-01-27 12:56:56 +08:00
|
|
|
typedef ULONGEST (gdbarch_core_xfer_shared_libraries_aix_ftype) (struct gdbarch *gdbarch, gdb_byte *readbuf, ULONGEST offset, ULONGEST len);
|
|
|
|
|
extern ULONGEST gdbarch_core_xfer_shared_libraries_aix (struct gdbarch *gdbarch, gdb_byte *readbuf, ULONGEST offset, ULONGEST len);
|
ppc-aix core file relocation.
The current code attempts to provide relocation support when debugging
core files via the rs6000_xfer_partial method of the rs6000-nat
target_ops vector. However, this target_ops vector does not get pushed
on the target stack at all when debugging core files, thus bypassing
completely that part of the code.
This patch fixes the problem by extending corelow's core_xfer_partial
into handling the TARGET_OBJECT_LIBRARIES_AIX object.
gdb/ChangeLog:
* gdbarch.sh (core_xfer_shared_libraries_aix): New method.
* gdbarch.h, gdbarch.c: Regenerate.
* corelow.c (core_xfer_partial): Add TARGET_OBJECT_LIBRARIES_AIX
handling.
* rs6000-aix-tdep.h: New file.
* Makefile.in (HFILES_NO_SRCDIR): Add rs6000-aix-tdep.h.
* rs6000-aix-tdep.c: Include "rs6000-aix-tdep.h" and
"xml-utils.h".
(struct field_info, struct ld_info_desc): New types.
(ld_info32_desc, ld_info64_desc): New static constants.
(struct ld_info): New type.
(rs6000_aix_extract_ld_info): New function.
(rs6000_aix_shared_library_to_xml): Likewise.
(rs6000_aix_ld_info_to_xml): Likewise.
(rs6000_aix_core_xfer_shared_libraries_aix): Likewise.
(rs6000_aix_init_osabi): Add call to
set_gdbarch_core_xfer_shared_libraries_aix.
* rs6000-nat.c: Add "rs6000-aix-tdep.h" include.
Remove "xml-utils.h" include.
(LdInfo): Delete typedef.
(ARCH64_DECL, LDI_FIELD, LDI_NEXT, LDI_FD, LDI_FILENAME):
Delete macros.
(rs6000_ptrace_ldinfo): Change return type to gdb_byte *.
Adjust code accordingly.
(rs6000_core_ldinfo): Delete, folded into
rs6000_aix_core_xfer_shared_libraries_aix.
(rs6000_xfer_shared_library): Delete.
(rs6000_xfer_shared_libraries): Reimplement.
2013-05-15 20:26:14 +08:00
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|
|
extern void set_gdbarch_core_xfer_shared_libraries_aix (struct gdbarch *gdbarch, gdbarch_core_xfer_shared_libraries_aix_ftype *core_xfer_shared_libraries_aix);
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2010-07-20 01:51:25 +08:00
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|
|
/* How the core target converts a PTID from a core file to a string. */
|
* corelow.c (get_core_registers): Adjust.
(core_file_thread_alive): Rename to...
(core_thread_alive): ... this.
(core_pid_to_str): Try gdbarch_core_pid_to_str first.
(init_core_ops): Adjust.
(coreops_suppress_target): Delete.
(_initialize_corelow): Unconditionally add core_ops.
* procfs.c: Include "inf-child.h".
(procfs_ops): Delete.
(init_procfs_ops): Delete. Reimplement as...
(procfs_target): ... this, inheriting from inf-child.
(procfs_attach, procfs_detach, procfs_fetch_registers): Adjust.
(procfs_prepare_to_store): Delete.
(procfs_store_registers, procfs_resume): Adjust.
(procfs_open): Delete.
(procfs_suppress_run): Delete.
(procfs_can_run): Delete.
(procfs_mourn_inferior): Adjust.
(procfs_init_inferior): Add target_ops parameter. Adjust.
(procfs_create_inferior): Don't pass procfs_init_inferior to
fork_inferior. Instead call it after fork_inferior returns.
(procfs_find_new_threads): Adjust.
(_initialize_procfs): Adjust to use procfs_target instead of
init_procfs_ops.
* sol-thread.c (orig_core_ops, sol_core_ops): Delete.
(lwp_to_thread): Use target_thread_alive.
(sol_thread_open): Delete.
(sol_thread_attach): Delete.
(sol_thread_detach, sol_thread_resume, sol_thread_wait)
(sol_thread_fetch_registers, sol_thread_store_registers): Adjust
to use find_target_beneath.
(sol_thread_prepare_to_store, sol_thread_xfer_memory): Delete.
(sol_thread_xfer_partial): Adjust to use find_target_beneath.
(sol_thread_files_info, sol_thread_kill_inferior): Delete.
(check_for_thread_db): New.
(sol_thread_notice_signals, sol_thread_create_inferior): Delete.
(sol_thread_new_objfile): Call check_for_thread_db.
(sol_thread_mourn_inferior): Adjust to use find_target_beneath.
(sol_thread_can_run): Delete.
(sol_thread_alive): Adjust to use find_target_beneath.
(sol_thread_stop): Delete.
(rw_common): Use target_write_memory or target_read_memory.
(ps_lgetregs, ps_lgetfpregs): Use target_fetch_registers.
(ps_lsetregs, ps_lsetfpregs): Use target_store_registers.
(solaris_pid_to_str): Remove check for libthread_db initialization
failing.
(sol_find_new_threads): Remove check for libthread_db
initialization failing, or for an invalid inferior_ptid. Adjust
to use find_target_beneath.
(sol_core_open, sol_core_close, sol_core_detach,
sol_core_files_info, sol_find_memory_regions,
sol_make_note_section, ignore): Delete.
(init_sol_thread_ops): Make it a thread_stratum target. Remove
unneeded callback settings.
(init_sol_core_ops): Delete.
(_initialize_sol_thread): No longer call init_sol_core_ops, set
procfs_suppress_run, or hack with core_ops.
* target.h (struct target_ops): Add a target_ops * parameter to
to_resume, to_fetch_registers, to_store_registers, to_thread_alive
and to_find_new_threads.
(target_fetch_registers, target_store_registers)
(target_thread_alive, target_find_new_threads): Redeclare as
function.
* target.c (update_current_target): Do not inherit or de_fault
to_resume, to_fetch_registers, to_store_registers,
to_thread_alive, to_find_new_threads.
(target_resume): Adjust.
(target_thread_alive, target_find_new_threads): New.
(debug_to_resume, debug_to_fetch_registers): Delete.
(target_fetch_registers): New.
(debug_to_store_registers): Delete.
(target_store_registers): New.
(debug_to_thread_alive, debug_to_find_new_threads): Delete.
(setup_target_debug): Adjust.
* gdbcore.h (core_ops): Delete declaration.
* inf-ptrace.c, linux-nat.c, remote.c, amd64-linux-nat.c,
inf-child.c, linux-thread-db.c, bsd-uthread.c, inf-ttrace.c,
i386-sol2-tdep.c, darwin-nat.c, gnu-nat.c, go32-nat.c,
hpux-thread.c, i386-linux-nat.c, i386fbsd-nat.c, monitor.c,
nto-procfs.c, remote-m32r-sdi.c, remote-mips.c, windows-nat.c,
alphabsd-nat.c, amd64bsd-nat.c, arm-linux-nat.c, armnbsd-nat.c,
bsd-kvm.c, hppa-hpux-nat.c, hppa-linux-nat.c, hppabsd-nat.c,
hppanbsd-nat.c, i386-darwin-nat.c, i386bsd-nat.c,
ia64-linux-nat.c, m32r-linux-nat.c, m68kbsd-nat.c,
m68klinux-nat.c, m88kbsd-nat.c, mips-linux-nat.c,
mips64obsd-nat.c, mipsnbsd-nat.c, ppc-linux-nat.c, ppcnbsd-nat.c,
ppcobsd-nat.c, remote-sim.c, rs6000-nat.c, s390-nat.c,
shnbsd-nat.c, sparc-nat.c, sparc-nat.h, spu-linux-nat.c,
vaxbsd-nat.c, xtensa-linux-nat.c: Adjust to target_ops changes.
* gdbarch.sh (core_pid_to_str): New gdbarch callback.
* gdbarch.h, gdbarch.c: Regenerate.
* sol2-tdep.c: Include "inferior.h".
(sol2_core_pid_to_str): New.
* sol2-tdep.h (sol2_core_pid_to_str): Declare.
* amd64-sol2-tdep.c (amd64_sol2_init_abi): Set it.
* sparc-sol2-tdep.c (sparc32_sol2_init_abi): Set it.
* sparc64-sol2-tdep.c (sparc64_sol2_init_abi): Set it.
* i386-sol2-tdep.c (i386_sol2_init_abi): Set it.
2009-02-23 08:03:50 +08:00
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extern int gdbarch_core_pid_to_str_p (struct gdbarch *gdbarch);
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typedef char * (gdbarch_core_pid_to_str_ftype) (struct gdbarch *gdbarch, ptid_t ptid);
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extern char * gdbarch_core_pid_to_str (struct gdbarch *gdbarch, ptid_t ptid);
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extern void set_gdbarch_core_pid_to_str (struct gdbarch *gdbarch, gdbarch_core_pid_to_str_ftype *core_pid_to_str);
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2016-01-19 01:49:23 +08:00
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/* How the core target extracts the name of a thread from a core file. */
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extern int gdbarch_core_thread_name_p (struct gdbarch *gdbarch);
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typedef const char * (gdbarch_core_thread_name_ftype) (struct gdbarch *gdbarch, struct thread_info *thr);
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extern const char * gdbarch_core_thread_name (struct gdbarch *gdbarch, struct thread_info *thr);
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extern void set_gdbarch_core_thread_name (struct gdbarch *gdbarch, gdbarch_core_thread_name_ftype *core_thread_name);
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2009-06-18 02:48:26 +08:00
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/* BFD target to use when generating a core file. */
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extern int gdbarch_gcore_bfd_target_p (struct gdbarch *gdbarch);
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extern const char * gdbarch_gcore_bfd_target (struct gdbarch *gdbarch);
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extern void set_gdbarch_gcore_bfd_target (struct gdbarch *gdbarch, const char * gcore_bfd_target);
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* NEWS: Mention pointer to member improvements.
* Makefile.in (gnu-v3-abi.o): Delete special rule.
(eval.o, gnu-v3-abi.o, ia64-tdep.o): Update.
* ada-valprint.c (ada_print_scalar): Update for new type codes.
* c-typeprint.c (c_print_type): Update for new type codes.
(c_type_print_varspec_prefix, c_type_print_varspec_suffix)
(c_type_print_base): Likewise.
(c_type_print_args): Rewrite.
* c-valprint.c (c_val_print): Update for new type codes. Remove
support for references to members. Treat methods like functions.
* cp-abi.c (cplus_print_method_ptr, cplus_method_ptr_size)
(cplus_make_method_ptr, cplus_method_ptr_to_value): New.
* cp-abi.h (cplus_print_method_ptr, cplus_method_ptr_size)
(cplus_make_method_ptr, cplus_method_ptr_to_value): New prototypes.
(struct cp_abi_ops): Add corresponding members.
* cp-valprint.c (cp_print_class_method): Delete.
(cp_find_class_member): New function.
(cp_print_class_member): Use it. Simplify support for bogus
member pointers.
* dwarf2read.c (quirk_gcc_member_function_pointer): Use
lookup_methodptr_type.
(read_tag_ptr_to_member_type): Likewise, and lookup_memberptr_type.
* eval.c (evaluate_subexp_standard): Implement EVAL_SKIP for
OP_SCOPE. Update call to value_aggregate_elt. Rewrite member
pointer support.
(evaluate_subexp_for_address): Handle OP_SCOPE explicitly. Handle
references returned by user defined operators.
* f-typeprint.c (f_print_type, f_type_print_varspec_prefix)
(f_type_print_varspec_suffix): Remove support for member pointers.
* gdbtypes.c (lookup_memberptr_type): Renamed from lookup_member_type
and adjusted.
(smash_to_memberptr_type): Likewise, from smash_to_member_type.
(lookup_methodptr_type): New.
(rank_one_type): Adjust for TYPE_CODE_MEMBERPTR.
(recursive_dump_type): Update for new types.
* gdbtypes.h (enum type_code): Replace TYPE_CODE_MEMBER with
TYPE_CODE_MEMBERPTR and TYPE_CODE_METHODPTR.
(lookup_memberptr_type, lookup_methodptr_type)
(smash_to_memberptr_type): New prototypes.
(smash_to_method_type): Formatting fix.
(lookup_member_type, smash_to_member_type): Delete prototypes.
* gnu-v3-abi.c (gnuv3_get_vtable, gnuv3_get_virtual_fn): New.
Do not rely on debug information for the vptr or the method's
enclosing type. Handle function descriptors for IA64.
(gnuv3_virtual_fn_field): Rewrite using the new functions.
(gnuv3_find_method_in, gnuv3_print_method_ptr)
(gnuv3_method_ptr_size, gnuv3_make_method_ptr)
(gnuv3_method_ptr_to_value): New.
(init_gnuv3_ops): Set new members of gnu_v3_abi_ops.
* hpread.c (hpread_type_lookup): Update for new types.
* infcall.c (value_arg_coerce): Likewise.
* m2-typeprint.c (m2_print_type): Remove explicit support
for member pointers.
* m2-valprint.c (m2_val_print): Likewise.
* p-typeprint.c (pascal_type_print_varspec_prefix)
(pascal_type_print_varspec_suffix, pascal_type_print_base): Likewise.
* p-valprint.c (pascal_val_print): Likewise.
(pascal_object_print_class_method, pascal_object_print_class_member):
Delete.
* p-lang.h (pascal_object_print_class_method)
(pascal_object_print_class_member): Delete prototypes.
* stabsread.c (read_type): Update for new types.
* typeprint.c (print_type_scalar): Likewise.
* valops.c (value_struct_elt_for_reference, value_namespace_elt)
(value_maybe_namespace_elt, value_aggregate_elt): Add want_address
argument. Construct a pointer to member if the address of a
function or data member is requested.
(value_cast_pointers): Don't modify the input value.
(value_cast): Adjust pointer to member handling for new types.
Allow null pointer to member constants. Don't modify the input
value.
(value_ind): Remove pointer to member check. Handle function
descriptors for function pointers.
(value_struct_elt, value_find_oload_method_list, check_field):
Remove pointer to member checks.
* value.c (unpack_long): Allow pointers to data members.
(value_from_longest): Allow member pointers.
* value.h (value_aggregate_elt): Add want_address.
* varobj.c (c_variable_editable): Remove check for members.
* gdbarch.sh: Add vtable_function_descriptors and vbit_in_delta.
* ia64-tdep.c (ia64_convert_from_func_ptr_addr): Handle descriptors
in virtual tables.
(ia64_gdbarch_init): Call set_gdbarch_vtable_function_descriptors.
* c-lang.h (cp_print_class_method): Delete prototype.
* arm-tdep.c (arm_gdbarch_init): Call set_gdbarch_vbit_in_delta.
* mips-tdep.c (mips_gdbarch_init): Likewise.
* gdbarch.c, gdbarch.h: Regenerated.
* gdb.cp/classes.exp (test_pointers_to_class_members): Update expected
output. Test the types of members and member pointers.
* gdb.cp/inherit.exp (test_print_mi_member_types): Remove KFAILs for
gdb/2092.
* gdb.cp/member-ptr.exp: Search for a comment instead of a
statement. Enable for GCC. Update expected output for some tests
and add new tests. Remove obsolete GCC KFAILs. Allow GCC's class
layout.
* gdb.cp/member-ptr.cc (Padding, Padding::vspacer, Base, Base::get_x)
(Base::vget_base, Left, Left::vget, Right, Right::vget, Diamond)
(Diamond::vget_base): New.
(main): Add new tests.
* gdb.cp/printmethod.exp: Update expected output for member functions.
* gdb.cp/virtfunc.exp (test_virtual_calls): Add a KFAIL for
print pEe->D::vg().
2007-01-04 02:05:45 +08:00
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/* If the elements of C++ vtables are in-place function descriptors rather
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than normal function pointers (which may point to code or a descriptor),
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set this to one. */
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extern int gdbarch_vtable_function_descriptors (struct gdbarch *gdbarch);
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extern void set_gdbarch_vtable_function_descriptors (struct gdbarch *gdbarch, int vtable_function_descriptors);
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/* Set if the least significant bit of the delta is used instead of the least
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significant bit of the pfn for pointers to virtual member functions. */
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extern int gdbarch_vbit_in_delta (struct gdbarch *gdbarch);
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extern void set_gdbarch_vbit_in_delta (struct gdbarch *gdbarch, int vbit_in_delta);
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2007-05-08 02:20:21 +08:00
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/* Advance PC to next instruction in order to skip a permanent breakpoint. */
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typedef void (gdbarch_skip_permanent_breakpoint_ftype) (struct regcache *regcache);
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extern void gdbarch_skip_permanent_breakpoint (struct gdbarch *gdbarch, struct regcache *regcache);
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extern void set_gdbarch_skip_permanent_breakpoint (struct gdbarch *gdbarch, gdbarch_skip_permanent_breakpoint_ftype *skip_permanent_breakpoint);
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2011-12-29 02:45:46 +08:00
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/* The maximum length of an instruction on this architecture in bytes. */
|
Implement displaced stepping.
gdb/
* gdbarch.sh (max_insn_length): New 'variable'.
(displaced_step_copy, displaced_step_fixup)
(displaced_step_free_closure, displaced_step_location): New
functions.
(struct displaced_step_closure): Add forward declaration.
* gdbarch.c, gdbarch.h: Regenerated.
* arch-utils.c: #include "objfiles.h".
(simple_displaced_step_copy_insn)
(simple_displaced_step_free_closure)
(displaced_step_at_entry_point): New functions.
* arch-utils.h (simple_displaced_step_copy_insn)
(simple_displaced_step_free_closure)
(displaced_step_at_entry_point): New prototypes.
* i386-tdep.c (I386_MAX_INSN_LEN): Rename to...
(I386_MAX_MATCHED_INSN_LEN): ... this.
(i386_absolute_jmp_p, i386_absolute_call_p)
(i386_ret_p, i386_call_p, i386_breakpoint_p, i386_syscall_p)
(i386_displaced_step_fixup): New functions.
(struct i386_insn, i386_match_insn): Update.
(i386_gdbarch_init): Set gdbarch_max_insn_length.
* i386-tdep.h (I386_MAX_INSN_LEN): New.
(i386_displaced_step_fixup): New prototype.
* i386-linux-tdep.c (i386_linux_init_abi): Include "arch-utils.h".
Register gdbarch_displaced_step_copy,
gdbarch_displaced_step_fixup, gdbarch_displaced_step_free_closure,
and gdbarch_displaced_step_location functions.
* infrun.c (debug_displaced): New variable.
(show_debug_displaced): New function.
(struct displaced_step_request): New struct.
(displaced_step_request_queue, displaced_step_ptid)
(displaced_step_gdbarch, displaced_step_closure)
(displaced_step_original, displaced_step_copy)
(displaced_step_saved_copy, can_use_displaced_stepping): New
variables.
(show_can_use_displaced_stepping, use_displaced_stepping)
(displaced_step_clear, cleanup_displaced_step_closure)
(displaced_step_dump_bytes, displaced_step_prepare)
(displaced_step_clear_cleanup, write_memory_ptid)
(displaced_step_fixup): New functions.
(resume): Call displaced_step_prepare.
(proceed): Call read_pc once, and remember the value. If using
displaced stepping, don't remove breakpoints.
(handle_inferior_event): Call displaced_step_fixup. Add some
debugging output. When we try to step over a breakpoint, but get
a signal to deliver to the thread instead, ensure the step-resume
breakpoint is actually inserted. If a thread hop is needed, and
displaced stepping is enabled, don't remove breakpoints.
(init_wait_for_inferior): Call displaced_step_clear.
(_initialize_infrun): Add "set debug displaced" command. Add
"maint set can-use-displaced-stepping" command. Clear
displaced_step_ptid.
* inferior.h (debug_displaced): Declare variable.
(displaced_step_dump_bytes): Declare function.
* Makefile.in (arch-utils.o, i386-linux-tdep.o): Update
dependencies.
gdb/testsuite/
* gdb.asm/asmsrc1.s: Add scratch space.
gdb/doc/
* gdb.texinfo (Debugging Output): Document "set/show debug
displaced".
(Maintenance Commands): Document "maint set/show
can-use-displaced-stepping".
2008-05-03 00:49:54 +08:00
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extern int gdbarch_max_insn_length_p (struct gdbarch *gdbarch);
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extern ULONGEST gdbarch_max_insn_length (struct gdbarch *gdbarch);
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extern void set_gdbarch_max_insn_length (struct gdbarch *gdbarch, ULONGEST max_insn_length);
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/* Copy the instruction at FROM to TO, and make any adjustments
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necessary to single-step it at that address.
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REGS holds the state the thread's registers will have before
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executing the copied instruction; the PC in REGS will refer to FROM,
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not the copy at TO. The caller should update it to point at TO later.
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Return a pointer to data of the architecture's choice to be passed
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to gdbarch_displaced_step_fixup. Or, return NULL to indicate that
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the instruction's effects have been completely simulated, with the
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resulting state written back to REGS.
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For a general explanation of displaced stepping and how GDB uses it,
|
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|
see the comments in infrun.c.
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The TO area is only guaranteed to have space for
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gdbarch_max_insn_length (arch) bytes, so this function must not
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write more bytes than that to that area.
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If you do not provide this function, GDB assumes that the
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architecture does not support displaced stepping.
|
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If your architecture doesn't need to adjust instructions before
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|
single-stepping them, consider using simple_displaced_step_copy_insn
|
2015-08-07 01:23:00 +08:00
|
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|
here.
|
Replace some xmalloc-family functions with XNEW-family ones
This patch is part of the make-gdb-buildable-in-C++ effort. The idea is
to change some calls to the xmalloc family of functions to calls to the
equivalents in the XNEW family. This avoids adding an explicit cast, so
it keeps the code a bit more readable. Some of them also map relatively
well to a C++ equivalent (XNEW (struct foo) -> new foo), so it will be
possible to do scripted replacements if needed.
I only changed calls that were obviously allocating memory for one or
multiple "objects". Allocation of variable sizes (such as strings or
buffer handling) will be for later (and won't use XNEW).
- xmalloc (sizeof (struct foo)) -> XNEW (struct foo)
- xmalloc (num * sizeof (struct foo)) -> XNEWVEC (struct foo, num)
- xcalloc (1, sizeof (struct foo)) -> XCNEW (struct foo)
- xcalloc (num, sizeof (struct foo)) -> XCNEWVEC (struct foo, num)
- xrealloc (p, num * sizeof (struct foo) -> XRESIZEVEC (struct foo, p, num)
- obstack_alloc (ob, sizeof (struct foo)) -> XOBNEW (ob, struct foo)
- obstack_alloc (ob, num * sizeof (struct foo)) -> XOBNEWVEC (ob, struct foo, num)
- alloca (sizeof (struct foo)) -> XALLOCA (struct foo)
- alloca (num * sizeof (struct foo)) -> XALLOCAVEC (struct foo, num)
Some instances of xmalloc followed by memset to zero the buffer were
replaced by XCNEW or XCNEWVEC.
I regtested on x86-64, Ubuntu 14.04, but the patch touches many
architecture-specific files. For those I'll have to rely on the
buildbot or people complaining that I broke their gdb.
gdb/ChangeLog:
* aarch64-linux-nat.c (aarch64_add_process): Likewise.
* aarch64-tdep.c (aarch64_gdbarch_init): Likewise.
* ada-exp.y (write_ambiguous_var): Likewise.
* ada-lang.c (resolve_subexp): Likewise.
(user_select_syms): Likewise.
(assign_aggregate): Likewise.
(ada_evaluate_subexp): Likewise.
(cache_symbol): Likewise.
* addrmap.c (allocate_key): Likewise.
(addrmap_create_mutable): Likewise.
* aix-thread.c (sync_threadlists): Likewise.
* alpha-tdep.c (alpha_push_dummy_call): Likewise.
(alpha_gdbarch_init): Likewise.
* amd64-windows-tdep.c (amd64_windows_push_arguments): Likewise.
* arm-linux-nat.c (arm_linux_add_process): Likewise.
* arm-linux-tdep.c (arm_linux_displaced_step_copy_insn): Likewise.
* arm-tdep.c (push_stack_item): Likewise.
(arm_displaced_step_copy_insn): Likewise.
(arm_gdbarch_init): Likewise.
(_initialize_arm_tdep): Likewise.
* avr-tdep.c (push_stack_item): Likewise.
* ax-general.c (new_agent_expr): Likewise.
* block.c (block_initialize_namespace): Likewise.
* breakpoint.c (alloc_counted_command_line): Likewise.
(update_dprintf_command_list): Likewise.
(parse_breakpoint_sals): Likewise.
(decode_static_tracepoint_spec): Likewise.
(until_break_command): Likewise.
(clear_command): Likewise.
(update_global_location_list): Likewise.
(get_breakpoint_objfile_data) Likewise.
* btrace.c (ftrace_new_function): Likewise.
(btrace_set_insn_history): Likewise.
(btrace_set_call_history): Likewise.
* buildsym.c (add_symbol_to_list): Likewise.
(record_pending_block): Likewise.
(start_subfile): Likewise.
(start_buildsym_compunit): Likewise.
(push_subfile): Likewise.
(end_symtab_get_static_block): Likewise.
(buildsym_init): Likewise.
* cli/cli-cmds.c (source_command): Likewise.
* cli/cli-decode.c (add_cmd): Likewise.
* cli/cli-script.c (build_command_line): Likewise.
(setup_user_args): Likewise.
(realloc_body_list): Likewise.
(process_next_line): Likewise.
(copy_command_lines): Likewise.
* cli/cli-setshow.c (do_set_command): Likewise.
* coff-pe-read.c (read_pe_exported_syms): Likewise.
* coffread.c (coff_locate_sections): Likewise.
(coff_symtab_read): Likewise.
(coff_read_struct_type): Likewise.
* common/cleanups.c (make_my_cleanup2): Likewise.
* common/common-exceptions.c (throw_it): Likewise.
* common/filestuff.c (make_cleanup_close): Likewise.
* common/format.c (parse_format_string): Likewise.
* common/queue.h (DEFINE_QUEUE_P): Likewise.
* compile/compile-object-load.c (munmap_list_add): Likewise.
(compile_object_load): Likewise.
* compile/compile-object-run.c (compile_object_run): Likewise.
* compile/compile.c (append_args): Likewise.
* corefile.c (specify_exec_file_hook): Likewise.
* cp-support.c (make_symbol_overload_list): Likewise.
* cris-tdep.c (push_stack_item): Likewise.
(cris_gdbarch_init): Likewise.
* ctf.c (ctf_trace_file_writer_new): Likewise.
* dbxread.c (init_header_files): Likewise.
(add_new_header_file): Likewise.
(init_bincl_list): Likewise.
(dbx_end_psymtab): Likewise.
(start_psymtab): Likewise.
(dbx_end_psymtab): Likewise.
* dcache.c (dcache_init): Likewise.
* dictionary.c (dict_create_hashed): Likewise.
(dict_create_hashed_expandable): Likewise.
(dict_create_linear): Likewise.
(dict_create_linear_expandable): Likewise.
* dtrace-probe.c (dtrace_process_dof_probe): Likewise.
* dummy-frame.c (register_dummy_frame_dtor): Likewise.
* dwarf2-frame-tailcall.c (cache_new_ref1): Likewise.
* dwarf2-frame.c (dwarf2_build_frame_info): Likewise.
(decode_frame_entry_1): Likewise.
* dwarf2expr.c (new_dwarf_expr_context): Likewise.
* dwarf2loc.c (dwarf2_compile_expr_to_ax): Likewise.
* dwarf2read.c (dwarf2_has_info): Likewise.
(create_signatured_type_table_from_index): Likewise.
(dwarf2_read_index): Likewise.
(dw2_get_file_names_reader): Likewise.
(create_all_type_units): Likewise.
(read_cutu_die_from_dwo): Likewise.
(init_tu_and_read_dwo_dies): Likewise.
(init_cutu_and_read_dies): Likewise.
(create_all_comp_units): Likewise.
(queue_comp_unit): Likewise.
(inherit_abstract_dies): Likewise.
(read_call_site_scope): Likewise.
(dwarf2_add_field): Likewise.
(dwarf2_add_typedef): Likewise.
(dwarf2_add_member_fn): Likewise.
(attr_to_dynamic_prop): Likewise.
(abbrev_table_alloc_abbrev): Likewise.
(abbrev_table_read_table): Likewise.
(add_include_dir): Likewise.
(add_file_name): Likewise.
(dwarf_decode_line_header): Likewise.
(dwarf2_const_value_attr): Likewise.
(dwarf_alloc_block): Likewise.
(parse_macro_definition): Likewise.
(set_die_type): Likewise.
(write_psymtabs_to_index): Likewise.
(create_cus_from_index): Likewise.
(dwarf2_create_include_psymtab): Likewise.
(process_psymtab_comp_unit_reader): Likewise.
(build_type_psymtab_dependencies): Likewise.
(read_comp_units_from_section): Likewise.
(compute_compunit_symtab_includes): Likewise.
(create_dwo_unit_in_dwp_v1): Likewise.
(create_dwo_unit_in_dwp_v2): Likewise.
(read_func_scope): Likewise.
(process_structure_scope): Likewise.
(mark_common_block_symbol_computed): Likewise.
(load_partial_dies): Likewise.
(dwarf2_symbol_mark_computed): Likewise.
* elfread.c (elf_symfile_segments): Likewise.
(elf_read_minimal_symbols): Likewise.
* environ.c (make_environ): Likewise.
* eval.c (evaluate_subexp_standard): Likewise.
* event-loop.c (create_file_handler): Likewise.
(create_async_signal_handler): Likewise.
(create_async_event_handler): Likewise.
(create_timer): Likewise.
* exec.c (build_section_table): Likewise.
* fbsd-nat.c (fbsd_remember_child): Likewise.
* fork-child.c (fork_inferior): Likewise.
* frv-tdep.c (new_variant): Likewise.
* gdbarch.sh (gdbarch_alloc): Likewise.
(append_name): Likewise.
* gdbtypes.c (rank_function): Likewise.
(copy_type_recursive): Likewise.
(add_dyn_prop): Likewise.
* gnu-nat.c (make_proc): Likewise.
(make_inf): Likewise.
(gnu_write_inferior): Likewise.
* gnu-v3-abi.c (build_gdb_vtable_type): Likewise.
(build_std_type_info_type): Likewise.
* guile/scm-param.c (compute_enum_list): Likewise.
* guile/scm-utils.c (gdbscm_parse_function_args): Likewise.
* guile/scm-value.c (gdbscm_value_call): Likewise.
* h8300-tdep.c (h8300_gdbarch_init): Likewise.
* hppa-tdep.c (hppa_init_objfile_priv_data): Likewise.
(read_unwind_info): Likewise.
* ia64-tdep.c (ia64_gdbarch_init): Likewise.
* infcall.c (dummy_frame_context_saver_setup): Likewise.
(call_function_by_hand_dummy): Likewise.
* infcmd.c (step_once): Likewise.
(finish_forward): Likewise.
(attach_command): Likewise.
(notice_new_inferior): Likewise.
* inferior.c (add_inferior_silent): Likewise.
* infrun.c (add_displaced_stepping_state): Likewise.
(save_infcall_control_state): Likewise.
(save_inferior_ptid): Likewise.
(_initialize_infrun): Likewise.
* jit.c (bfd_open_from_target_memory): Likewise.
(jit_gdbarch_data_init): Likewise.
* language.c (add_language): Likewise.
* linespec.c (decode_line_2): Likewise.
* linux-nat.c (add_to_pid_list): Likewise.
(add_initial_lwp): Likewise.
* linux-thread-db.c (add_thread_db_info): Likewise.
(record_thread): Likewise.
(info_auto_load_libthread_db): Likewise.
* m32c-tdep.c (m32c_gdbarch_init): Likewise.
* m68hc11-tdep.c (m68hc11_gdbarch_init): Likewise.
* m68k-tdep.c (m68k_gdbarch_init): Likewise.
* m88k-tdep.c (m88k_analyze_prologue): Likewise.
* macrocmd.c (macro_define_command): Likewise.
* macroexp.c (gather_arguments): Likewise.
* macroscope.c (sal_macro_scope): Likewise.
* macrotab.c (new_macro_table): Likewise.
* mdebugread.c (push_parse_stack): Likewise.
(parse_partial_symbols): Likewise.
(parse_symbol): Likewise.
(psymtab_to_symtab_1): Likewise.
(new_block): Likewise.
(new_psymtab): Likewise.
(mdebug_build_psymtabs): Likewise.
(add_pending): Likewise.
(elfmdebug_build_psymtabs): Likewise.
* mep-tdep.c (mep_gdbarch_init): Likewise.
* mi/mi-main.c (mi_execute_command): Likewise.
* mi/mi-parse.c (mi_parse_argv): Likewise.
* minidebug.c (lzma_open): Likewise.
* minsyms.c (terminate_minimal_symbol_table): Likewise.
* mips-linux-nat.c (mips_linux_insert_watchpoint): Likewise.
* mips-tdep.c (mips_gdbarch_init): Likewise.
* mn10300-tdep.c (mn10300_gdbarch_init): Likewise.
* msp430-tdep.c (msp430_gdbarch_init): Likewise.
* mt-tdep.c (mt_registers_info): Likewise.
* nat/aarch64-linux.c (aarch64_linux_new_thread): Likewise.
* nat/linux-btrace.c (linux_enable_bts): Likewise.
(linux_enable_pt): Likewise.
* nat/linux-osdata.c (linux_xfer_osdata_processes): Likewise.
(linux_xfer_osdata_processgroups): Likewise.
* nios2-tdep.c (nios2_gdbarch_init): Likewise.
* nto-procfs.c (procfs_meminfo): Likewise.
* objc-lang.c (start_msglist): Likewise.
(selectors_info): Likewise.
(classes_info): Likewise.
(find_methods): Likewise.
* objfiles.c (allocate_objfile): Likewise.
(update_section_map): Likewise.
* osabi.c (gdbarch_register_osabi): Likewise.
(gdbarch_register_osabi_sniffer): Likewise.
* parse.c (start_arglist): Likewise.
* ppc-linux-nat.c (hwdebug_find_thread_points_by_tid): Likewise.
(hwdebug_insert_point): Likewise.
* printcmd.c (display_command): Likewise.
(ui_printf): Likewise.
* procfs.c (create_procinfo): Likewise.
(load_syscalls): Likewise.
(proc_get_LDT_entry): Likewise.
(proc_update_threads): Likewise.
* prologue-value.c (make_pv_area): Likewise.
(pv_area_store): Likewise.
* psymtab.c (extend_psymbol_list): Likewise.
(init_psymbol_list): Likewise.
(allocate_psymtab): Likewise.
* python/py-inferior.c (add_thread_object): Likewise.
* python/py-param.c (compute_enum_values): Likewise.
* python/py-value.c (valpy_call): Likewise.
* python/py-varobj.c (py_varobj_iter_next): Likewise.
* python/python.c (ensure_python_env): Likewise.
* record-btrace.c (record_btrace_start_replaying): Likewise.
* record-full.c (record_full_reg_alloc): Likewise.
(record_full_mem_alloc): Likewise.
(record_full_end_alloc): Likewise.
(record_full_core_xfer_partial): Likewise.
* regcache.c (get_thread_arch_aspace_regcache): Likewise.
* remote-fileio.c (remote_fileio_init_fd_map): Likewise.
* remote-notif.c (remote_notif_state_allocate): Likewise.
* remote.c (demand_private_info): Likewise.
(remote_notif_stop_alloc_reply): Likewise.
(remote_enable_btrace): Likewise.
* reverse.c (save_bookmark_command): Likewise.
* rl78-tdep.c (rl78_gdbarch_init): Likewise.
* rx-tdep.c (rx_gdbarch_init): Likewise.
* s390-linux-nat.c (s390_insert_watchpoint): Likewise.
* ser-go32.c (dos_get_tty_state): Likewise.
(dos_copy_tty_state): Likewise.
* ser-mingw.c (ser_windows_open): Likewise.
(ser_console_wait_handle): Likewise.
(ser_console_get_tty_state): Likewise.
(make_pipe_state): Likewise.
(net_windows_open): Likewise.
* ser-unix.c (hardwire_get_tty_state): Likewise.
(hardwire_copy_tty_state): Likewise.
* solib-aix.c (solib_aix_new_lm_info): Likewise.
* solib-dsbt.c (dsbt_current_sos): Likewise.
(dsbt_relocate_main_executable): Likewise.
* solib-frv.c (frv_current_sos): Likewise.
(frv_relocate_main_executable): Likewise.
* solib-spu.c (spu_bfd_fopen): Likewise.
* solib-svr4.c (lm_info_read): Likewise.
(svr4_copy_library_list): Likewise.
(svr4_default_sos): Likewise.
* source.c (find_source_lines): Likewise.
(line_info): Likewise.
(add_substitute_path_rule): Likewise.
* spu-linux-nat.c (spu_bfd_open): Likewise.
* spu-tdep.c (info_spu_dma_cmdlist): Likewise.
* stabsread.c (dbx_lookup_type): Likewise.
(read_type): Likewise.
(read_member_functions): Likewise.
(read_struct_fields): Likewise.
(read_baseclasses): Likewise.
(read_args): Likewise.
(_initialize_stabsread): Likewise.
* stack.c (func_command): Likewise.
* stap-probe.c (handle_stap_probe): Likewise.
* symfile.c (addrs_section_sort): Likewise.
(addr_info_make_relative): Likewise.
(load_section_callback): Likewise.
(add_symbol_file_command): Likewise.
(init_filename_language_table): Likewise.
* symtab.c (create_filename_seen_cache): Likewise.
(sort_search_symbols_remove_dups): Likewise.
(search_symbols): Likewise.
* target.c (make_cleanup_restore_target_terminal): Likewise.
* thread.c (new_thread): Likewise.
(enable_thread_stack_temporaries): Likewise.
(make_cleanup_restore_current_thread): Likewise.
(thread_apply_all_command): Likewise.
* tic6x-tdep.c (tic6x_gdbarch_init): Likewise.
* top.c (gdb_readline_wrapper): Likewise.
* tracefile-tfile.c (tfile_trace_file_writer_new): Likewise.
* tracepoint.c (trace_find_line_command): Likewise.
(all_tracepoint_actions_and_cleanup): Likewise.
(make_cleanup_restore_current_traceframe): Likewise.
(get_uploaded_tp): Likewise.
(get_uploaded_tsv): Likewise.
* tui/tui-data.c (tui_alloc_generic_win_info): Likewise.
(tui_alloc_win_info): Likewise.
(tui_alloc_content): Likewise.
(tui_add_content_elements): Likewise.
* tui/tui-disasm.c (tui_find_disassembly_address): Likewise.
(tui_set_disassem_content): Likewise.
* ui-file.c (ui_file_new): Likewise.
(stdio_file_new): Likewise.
(tee_file_new): Likewise.
* utils.c (make_cleanup_restore_integer): Likewise.
(add_internal_problem_command): Likewise.
* v850-tdep.c (v850_gdbarch_init): Likewise.
* valops.c (find_oload_champ): Likewise.
* value.c (allocate_value_lazy): Likewise.
(record_latest_value): Likewise.
(create_internalvar): Likewise.
* varobj.c (install_variable): Likewise.
(new_variable): Likewise.
(new_root_variable): Likewise.
(cppush): Likewise.
(_initialize_varobj): Likewise.
* windows-nat.c (windows_make_so): Likewise.
* x86-nat.c (x86_add_process): Likewise.
* xcoffread.c (arrange_linetable): Likewise.
(allocate_include_entry): Likewise.
(process_linenos): Likewise.
(SYMBOL_DUP): Likewise.
(xcoff_start_psymtab): Likewise.
(xcoff_end_psymtab): Likewise.
* xml-support.c (gdb_xml_parse_attr_ulongest): Likewise.
* xtensa-tdep.c (xtensa_register_type): Likewise.
* gdbarch.c: Regenerate.
* gdbarch.h: Regenerate.
gdb/gdbserver/ChangeLog:
* ax.c (gdb_parse_agent_expr): Likewise.
(compile_bytecodes): Likewise.
* dll.c (loaded_dll): Likewise.
* event-loop.c (append_callback_event): Likewise.
(create_file_handler): Likewise.
(create_file_event): Likewise.
* hostio.c (handle_open): Likewise.
* inferiors.c (add_thread): Likewise.
(add_process): Likewise.
* linux-aarch64-low.c (aarch64_linux_new_process): Likewise.
* linux-arm-low.c (arm_new_process): Likewise.
(arm_new_thread): Likewise.
* linux-low.c (add_to_pid_list): Likewise.
(linux_add_process): Likewise.
(handle_extended_wait): Likewise.
(add_lwp): Likewise.
(enqueue_one_deferred_signal): Likewise.
(enqueue_pending_signal): Likewise.
(linux_resume_one_lwp_throw): Likewise.
(linux_resume_one_thread): Likewise.
(linux_read_memory): Likewise.
(linux_write_memory): Likewise.
* linux-mips-low.c (mips_linux_new_process): Likewise.
(mips_linux_new_thread): Likewise.
(mips_add_watchpoint): Likewise.
* linux-x86-low.c (initialize_low_arch): Likewise.
* lynx-low.c (lynx_add_process): Likewise.
* mem-break.c (set_raw_breakpoint_at): Likewise.
(set_breakpoint): Likewise.
(add_condition_to_breakpoint): Likewise.
(add_commands_to_breakpoint): Likewise.
(clone_agent_expr): Likewise.
(clone_one_breakpoint): Likewise.
* regcache.c (new_register_cache): Likewise.
* remote-utils.c (look_up_one_symbol): Likewise.
* server.c (queue_stop_reply): Likewise.
(start_inferior): Likewise.
(queue_stop_reply_callback): Likewise.
(handle_target_event): Likewise.
* spu-low.c (fetch_ppc_memory): Likewise.
(store_ppc_memory): Likewise.
* target.c (set_target_ops): Likewise.
* thread-db.c (thread_db_load_search): Likewise.
(try_thread_db_load_1): Likewise.
* tracepoint.c (add_tracepoint): Likewise.
(add_tracepoint_action): Likewise.
(create_trace_state_variable): Likewise.
(cmd_qtdpsrc): Likewise.
(cmd_qtro): Likewise.
(add_while_stepping_state): Likewise.
* win32-low.c (child_add_thread): Likewise.
(get_image_name): Likewise.
2015-08-27 05:16:07 +08:00
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2015-08-07 01:23:00 +08:00
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If the instruction cannot execute out of line, return NULL. The
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core falls back to stepping past the instruction in-line instead in
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that case. */
|
Implement displaced stepping.
gdb/
* gdbarch.sh (max_insn_length): New 'variable'.
(displaced_step_copy, displaced_step_fixup)
(displaced_step_free_closure, displaced_step_location): New
functions.
(struct displaced_step_closure): Add forward declaration.
* gdbarch.c, gdbarch.h: Regenerated.
* arch-utils.c: #include "objfiles.h".
(simple_displaced_step_copy_insn)
(simple_displaced_step_free_closure)
(displaced_step_at_entry_point): New functions.
* arch-utils.h (simple_displaced_step_copy_insn)
(simple_displaced_step_free_closure)
(displaced_step_at_entry_point): New prototypes.
* i386-tdep.c (I386_MAX_INSN_LEN): Rename to...
(I386_MAX_MATCHED_INSN_LEN): ... this.
(i386_absolute_jmp_p, i386_absolute_call_p)
(i386_ret_p, i386_call_p, i386_breakpoint_p, i386_syscall_p)
(i386_displaced_step_fixup): New functions.
(struct i386_insn, i386_match_insn): Update.
(i386_gdbarch_init): Set gdbarch_max_insn_length.
* i386-tdep.h (I386_MAX_INSN_LEN): New.
(i386_displaced_step_fixup): New prototype.
* i386-linux-tdep.c (i386_linux_init_abi): Include "arch-utils.h".
Register gdbarch_displaced_step_copy,
gdbarch_displaced_step_fixup, gdbarch_displaced_step_free_closure,
and gdbarch_displaced_step_location functions.
* infrun.c (debug_displaced): New variable.
(show_debug_displaced): New function.
(struct displaced_step_request): New struct.
(displaced_step_request_queue, displaced_step_ptid)
(displaced_step_gdbarch, displaced_step_closure)
(displaced_step_original, displaced_step_copy)
(displaced_step_saved_copy, can_use_displaced_stepping): New
variables.
(show_can_use_displaced_stepping, use_displaced_stepping)
(displaced_step_clear, cleanup_displaced_step_closure)
(displaced_step_dump_bytes, displaced_step_prepare)
(displaced_step_clear_cleanup, write_memory_ptid)
(displaced_step_fixup): New functions.
(resume): Call displaced_step_prepare.
(proceed): Call read_pc once, and remember the value. If using
displaced stepping, don't remove breakpoints.
(handle_inferior_event): Call displaced_step_fixup. Add some
debugging output. When we try to step over a breakpoint, but get
a signal to deliver to the thread instead, ensure the step-resume
breakpoint is actually inserted. If a thread hop is needed, and
displaced stepping is enabled, don't remove breakpoints.
(init_wait_for_inferior): Call displaced_step_clear.
(_initialize_infrun): Add "set debug displaced" command. Add
"maint set can-use-displaced-stepping" command. Clear
displaced_step_ptid.
* inferior.h (debug_displaced): Declare variable.
(displaced_step_dump_bytes): Declare function.
* Makefile.in (arch-utils.o, i386-linux-tdep.o): Update
dependencies.
gdb/testsuite/
* gdb.asm/asmsrc1.s: Add scratch space.
gdb/doc/
* gdb.texinfo (Debugging Output): Document "set/show debug
displaced".
(Maintenance Commands): Document "maint set/show
can-use-displaced-stepping".
2008-05-03 00:49:54 +08:00
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extern int gdbarch_displaced_step_copy_insn_p (struct gdbarch *gdbarch);
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typedef struct displaced_step_closure * (gdbarch_displaced_step_copy_insn_ftype) (struct gdbarch *gdbarch, CORE_ADDR from, CORE_ADDR to, struct regcache *regs);
|
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extern struct displaced_step_closure * gdbarch_displaced_step_copy_insn (struct gdbarch *gdbarch, CORE_ADDR from, CORE_ADDR to, struct regcache *regs);
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extern void set_gdbarch_displaced_step_copy_insn (struct gdbarch *gdbarch, gdbarch_displaced_step_copy_insn_ftype *displaced_step_copy_insn);
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2009-09-29 08:53:04 +08:00
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/* Return true if GDB should use hardware single-stepping to execute
|
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|
the displaced instruction identified by CLOSURE. If false,
|
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|
GDB will simply restart execution at the displaced instruction
|
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location, and it is up to the target to ensure GDB will receive
|
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control again (e.g. by placing a software breakpoint instruction
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into the displaced instruction buffer).
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The default implementation returns false on all targets that
|
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provide a gdbarch_software_single_step routine, and true otherwise. */
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typedef int (gdbarch_displaced_step_hw_singlestep_ftype) (struct gdbarch *gdbarch, struct displaced_step_closure *closure);
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extern int gdbarch_displaced_step_hw_singlestep (struct gdbarch *gdbarch, struct displaced_step_closure *closure);
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extern void set_gdbarch_displaced_step_hw_singlestep (struct gdbarch *gdbarch, gdbarch_displaced_step_hw_singlestep_ftype *displaced_step_hw_singlestep);
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Implement displaced stepping.
gdb/
* gdbarch.sh (max_insn_length): New 'variable'.
(displaced_step_copy, displaced_step_fixup)
(displaced_step_free_closure, displaced_step_location): New
functions.
(struct displaced_step_closure): Add forward declaration.
* gdbarch.c, gdbarch.h: Regenerated.
* arch-utils.c: #include "objfiles.h".
(simple_displaced_step_copy_insn)
(simple_displaced_step_free_closure)
(displaced_step_at_entry_point): New functions.
* arch-utils.h (simple_displaced_step_copy_insn)
(simple_displaced_step_free_closure)
(displaced_step_at_entry_point): New prototypes.
* i386-tdep.c (I386_MAX_INSN_LEN): Rename to...
(I386_MAX_MATCHED_INSN_LEN): ... this.
(i386_absolute_jmp_p, i386_absolute_call_p)
(i386_ret_p, i386_call_p, i386_breakpoint_p, i386_syscall_p)
(i386_displaced_step_fixup): New functions.
(struct i386_insn, i386_match_insn): Update.
(i386_gdbarch_init): Set gdbarch_max_insn_length.
* i386-tdep.h (I386_MAX_INSN_LEN): New.
(i386_displaced_step_fixup): New prototype.
* i386-linux-tdep.c (i386_linux_init_abi): Include "arch-utils.h".
Register gdbarch_displaced_step_copy,
gdbarch_displaced_step_fixup, gdbarch_displaced_step_free_closure,
and gdbarch_displaced_step_location functions.
* infrun.c (debug_displaced): New variable.
(show_debug_displaced): New function.
(struct displaced_step_request): New struct.
(displaced_step_request_queue, displaced_step_ptid)
(displaced_step_gdbarch, displaced_step_closure)
(displaced_step_original, displaced_step_copy)
(displaced_step_saved_copy, can_use_displaced_stepping): New
variables.
(show_can_use_displaced_stepping, use_displaced_stepping)
(displaced_step_clear, cleanup_displaced_step_closure)
(displaced_step_dump_bytes, displaced_step_prepare)
(displaced_step_clear_cleanup, write_memory_ptid)
(displaced_step_fixup): New functions.
(resume): Call displaced_step_prepare.
(proceed): Call read_pc once, and remember the value. If using
displaced stepping, don't remove breakpoints.
(handle_inferior_event): Call displaced_step_fixup. Add some
debugging output. When we try to step over a breakpoint, but get
a signal to deliver to the thread instead, ensure the step-resume
breakpoint is actually inserted. If a thread hop is needed, and
displaced stepping is enabled, don't remove breakpoints.
(init_wait_for_inferior): Call displaced_step_clear.
(_initialize_infrun): Add "set debug displaced" command. Add
"maint set can-use-displaced-stepping" command. Clear
displaced_step_ptid.
* inferior.h (debug_displaced): Declare variable.
(displaced_step_dump_bytes): Declare function.
* Makefile.in (arch-utils.o, i386-linux-tdep.o): Update
dependencies.
gdb/testsuite/
* gdb.asm/asmsrc1.s: Add scratch space.
gdb/doc/
* gdb.texinfo (Debugging Output): Document "set/show debug
displaced".
(Maintenance Commands): Document "maint set/show
can-use-displaced-stepping".
2008-05-03 00:49:54 +08:00
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/* Fix up the state resulting from successfully single-stepping a
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displaced instruction, to give the result we would have gotten from
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stepping the instruction in its original location.
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REGS is the register state resulting from single-stepping the
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displaced instruction.
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CLOSURE is the result from the matching call to
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gdbarch_displaced_step_copy_insn.
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If you provide gdbarch_displaced_step_copy_insn.but not this
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function, then GDB assumes that no fixup is needed after
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single-stepping the instruction.
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For a general explanation of displaced stepping and how GDB uses it,
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see the comments in infrun.c. */
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extern int gdbarch_displaced_step_fixup_p (struct gdbarch *gdbarch);
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typedef void (gdbarch_displaced_step_fixup_ftype) (struct gdbarch *gdbarch, struct displaced_step_closure *closure, CORE_ADDR from, CORE_ADDR to, struct regcache *regs);
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extern void gdbarch_displaced_step_fixup (struct gdbarch *gdbarch, struct displaced_step_closure *closure, CORE_ADDR from, CORE_ADDR to, struct regcache *regs);
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extern void set_gdbarch_displaced_step_fixup (struct gdbarch *gdbarch, gdbarch_displaced_step_fixup_ftype *displaced_step_fixup);
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/* Free a closure returned by gdbarch_displaced_step_copy_insn.
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If you provide gdbarch_displaced_step_copy_insn, you must provide
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this function as well.
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If your architecture uses closures that don't need to be freed, then
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you can use simple_displaced_step_free_closure here.
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For a general explanation of displaced stepping and how GDB uses it,
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see the comments in infrun.c. */
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typedef void (gdbarch_displaced_step_free_closure_ftype) (struct gdbarch *gdbarch, struct displaced_step_closure *closure);
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extern void gdbarch_displaced_step_free_closure (struct gdbarch *gdbarch, struct displaced_step_closure *closure);
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extern void set_gdbarch_displaced_step_free_closure (struct gdbarch *gdbarch, gdbarch_displaced_step_free_closure_ftype *displaced_step_free_closure);
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/* Return the address of an appropriate place to put displaced
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instructions while we step over them. There need only be one such
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place, since we're only stepping one thread over a breakpoint at a
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time.
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For a general explanation of displaced stepping and how GDB uses it,
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see the comments in infrun.c. */
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typedef CORE_ADDR (gdbarch_displaced_step_location_ftype) (struct gdbarch *gdbarch);
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extern CORE_ADDR gdbarch_displaced_step_location (struct gdbarch *gdbarch);
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extern void set_gdbarch_displaced_step_location (struct gdbarch *gdbarch, gdbarch_displaced_step_location_ftype *displaced_step_location);
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2010-05-27 02:19:28 +08:00
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/* Relocate an instruction to execute at a different address. OLDLOC
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is the address in the inferior memory where the instruction to
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relocate is currently at. On input, TO points to the destination
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where we want the instruction to be copied (and possibly adjusted)
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to. On output, it points to one past the end of the resulting
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instruction(s). The effect of executing the instruction at TO shall
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be the same as if executing it at FROM. For example, call
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instructions that implicitly push the return address on the stack
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should be adjusted to return to the instruction after OLDLOC;
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relative branches, and other PC-relative instructions need the
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offset adjusted; etc. */
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extern int gdbarch_relocate_instruction_p (struct gdbarch *gdbarch);
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typedef void (gdbarch_relocate_instruction_ftype) (struct gdbarch *gdbarch, CORE_ADDR *to, CORE_ADDR from);
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extern void gdbarch_relocate_instruction (struct gdbarch *gdbarch, CORE_ADDR *to, CORE_ADDR from);
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extern void set_gdbarch_relocate_instruction (struct gdbarch *gdbarch, gdbarch_relocate_instruction_ftype *relocate_instruction);
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2007-05-12 03:57:17 +08:00
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/* Refresh overlay mapped state for section OSECT. */
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extern int gdbarch_overlay_update_p (struct gdbarch *gdbarch);
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typedef void (gdbarch_overlay_update_ftype) (struct obj_section *osect);
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extern void gdbarch_overlay_update (struct gdbarch *gdbarch, struct obj_section *osect);
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extern void set_gdbarch_overlay_update (struct gdbarch *gdbarch, gdbarch_overlay_update_ftype *overlay_update);
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2007-09-11 05:14:11 +08:00
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extern int gdbarch_core_read_description_p (struct gdbarch *gdbarch);
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typedef const struct target_desc * (gdbarch_core_read_description_ftype) (struct gdbarch *gdbarch, struct target_ops *target, bfd *abfd);
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extern const struct target_desc * gdbarch_core_read_description (struct gdbarch *gdbarch, struct target_ops *target, bfd *abfd);
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extern void set_gdbarch_core_read_description (struct gdbarch *gdbarch, gdbarch_core_read_description_ftype *core_read_description);
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2007-10-19 20:23:21 +08:00
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/* Handle special encoding of static variables in stabs debug info. */
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extern int gdbarch_static_transform_name_p (struct gdbarch *gdbarch);
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* gdbtypes.h (struct main_type): Change type of name,tag_name,
and fields.name members from char * to const char *. All uses updated.
(struct cplus_struct_type): Change type of fn_fieldlists.name member
from char * to const char *. All uses updated.
(type_name_no_tag): Update.
(lookup_unsigned_typename, lookup_signed_typename): Update.
* gdbtypes.c (type_name_no_tag): Change result type
from char * to const char *. All callers updated.
(lookup_unsigned_typename, lookup_signed_typename): Change type of
name parameter from char * to const char *.
* symtab.h (struct cplus_specific): Change type of demangled_name
member from char * to const char *. All uses updated.
(struct general_symbol_info): Change type of name and
mangled_lang.demangled_name members from char * to const char *.
All uses updated.
(symbol_get_demangled_name, symbol_natural_name): Update.
(symbol_demangled_name, symbol_search_name): Update.
* symtab.c (symbol_get_demangled_name): Change result type
from char * to const char *. All callers updated.
(symbol_natural_name, symbol_demangled_name): Ditto.
(symbol_search_name): Ditto.
(completion_list_add_name): Change type of symname,sym_text,
text,word parameters from char * to const char *.
(completion_list_objc_symbol): Change type of sym_text,
text,word parameters from char * to const char *.
* ada-lang.c (find_struct_field): Change type of name parameter
from char * to const char *.
(encoded_ordered_before): Similarly for N0,N1 parameters.
(old_renaming_is_invisible): Similarly for function_name parameter.
(ada_type_name): Change result type from char * to const char *.
All callers updated.
* ada-lang.h (ada_type_name): Update.
* buildsym.c (hashname): Change type of name parameter
from char * to const char *.
* buildsym.h (hashname): Update.
* dbxread.c (end_psymtab): Change type of include_list parameter
from char ** to const char **.
* dwarf2read.c (determine_prefix): Change result type
from char * to const char *. All callers updated.
* f-lang.c (find_common_for_function): Change type of name, funcname
parameters from char * to const char *.
* f-lang.c (find_common_for_function): Update.
* f-valprint.c (list_all_visible_commons): Change type of funcname
parameters from char * to const char *.
* gdbarch.sh (static_transform_name): Change type of name parameter
and result from char * to const char *.
* gdbarch.c: Regenerate.
* gdbarch.h: Regenerate.
* i386-sol2-tdep.c (i386_sol2_static_transform_name): Change type
of name parameter from char * to const char *.
* jv-lang.c (java_primitive_type_from_name): Ditto.
(java_demangled_signature_length): Similarly for signature parameter.
(java_demangled_signature_copy): Ditto.
(java_demangle_type_signature): Ditto.
* jv-lang.h (java_primitive_type_from_name): Update.
(java_demangle_type_signature): Update.
* objc-lang.c (specialcmp): Change type of a,b parameters
from char * to const char *.
* p-lang.c (is_pascal_string_type): Change type of arrayname parameter
from char * to const char *. All callers updated.
* p-lang.h (is_pascal_string_type): Update.
* solib-frv.c (find_canonical_descriptor_in_load_object): Change type
of name parameter from char * to const char *.
* sparc-sol2-tdep.c (sparc_sol2_static_transform_name): Ditto.
* utils.c (fprintf_symbol_filtered): Ditto.
* defs.h (fprintf_symbol_filtered): Update.
* sparc-tdep.h (sparc_sol2_static_transform_name): Update.
* stabsread.h (end_psymtab): Update.
* stack.c (find_frame_funname): Change type of funname parameter
from char ** to const char **.
* stack.h (find_frame_funname): Update.
* typeprint.c (type_print): Change type of varstring parameter
from char * to const char *.
* value.h (type_print): Update.
* xcoffread.c (xcoff_start_psymtab): Change type of filename parameter
from char * to const char *. All callers updated.
(xcoff_end_psymtab): Change type of include_list parameter
from char ** to const char **. All callers updated.
(swap_sym): Similarly for name parameter. All callers updated.
* coffread.c (patch_type): Add (char*) cast to xfree parameter.
Use xstrdup.
(process_coff_symbol): Use xstrdup.
* stabsread.c (stabs_method_name_from_physname): Renamed from
update_method_name_from_physname. Change result type from void
to char *. All callers updated.
(read_member_functions): In has_destructor case, store name in objfile
obstack instead of malloc space. In !has_stub case, fix mem leak.
2012-02-07 12:48:23 +08:00
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typedef const char * (gdbarch_static_transform_name_ftype) (const char *name);
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extern const char * gdbarch_static_transform_name (struct gdbarch *gdbarch, const char *name);
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2007-10-19 20:23:21 +08:00
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extern void set_gdbarch_static_transform_name (struct gdbarch *gdbarch, gdbarch_static_transform_name_ftype *static_transform_name);
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2007-10-19 20:26:35 +08:00
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/* Set if the address in N_SO or N_FUN stabs may be zero. */
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extern int gdbarch_sofun_address_maybe_missing (struct gdbarch *gdbarch);
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extern void set_gdbarch_sofun_address_maybe_missing (struct gdbarch *gdbarch, int sofun_address_maybe_missing);
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2009-04-30 10:52:16 +08:00
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/* Parse the instruction at ADDR storing in the record execution log
|
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the registers REGCACHE and memory ranges that will be affected when
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the instruction executes, along with their current values.
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Return -1 if something goes wrong, 0 otherwise. */
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extern int gdbarch_process_record_p (struct gdbarch *gdbarch);
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typedef int (gdbarch_process_record_ftype) (struct gdbarch *gdbarch, struct regcache *regcache, CORE_ADDR addr);
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extern int gdbarch_process_record (struct gdbarch *gdbarch, struct regcache *regcache, CORE_ADDR addr);
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extern void set_gdbarch_process_record (struct gdbarch *gdbarch, gdbarch_process_record_ftype *process_record);
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2009-09-21 13:52:06 +08:00
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/* Save process state after a signal.
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Return -1 if something goes wrong, 0 otherwise. */
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extern int gdbarch_process_record_signal_p (struct gdbarch *gdbarch);
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2012-05-25 00:39:15 +08:00
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typedef int (gdbarch_process_record_signal_ftype) (struct gdbarch *gdbarch, struct regcache *regcache, enum gdb_signal signal);
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extern int gdbarch_process_record_signal (struct gdbarch *gdbarch, struct regcache *regcache, enum gdb_signal signal);
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2009-09-21 13:52:06 +08:00
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extern void set_gdbarch_process_record_signal (struct gdbarch *gdbarch, gdbarch_process_record_signal_ftype *process_record_signal);
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2009-04-30 10:52:16 +08:00
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2012-05-25 01:03:28 +08:00
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/* Signal translation: translate inferior's signal (target's) number
|
2012-06-05 00:23:16 +08:00
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into GDB's representation. The implementation of this method must
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be host independent. IOW, don't rely on symbols of the NAT_FILE
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header (the nm-*.h files), the host <signal.h> header, or similar
|
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headers. This is mainly used when cross-debugging core files ---
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"Live" targets hide the translation behind the target interface
|
2012-06-05 00:23:57 +08:00
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(target_wait, target_resume, etc.). */
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extern int gdbarch_gdb_signal_from_target_p (struct gdbarch *gdbarch);
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2012-05-25 01:03:28 +08:00
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typedef enum gdb_signal (gdbarch_gdb_signal_from_target_ftype) (struct gdbarch *gdbarch, int signo);
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extern enum gdb_signal gdbarch_gdb_signal_from_target (struct gdbarch *gdbarch, int signo);
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extern void set_gdbarch_gdb_signal_from_target (struct gdbarch *gdbarch, gdbarch_gdb_signal_from_target_ftype *gdb_signal_from_target);
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2008-05-02 03:31:52 +08:00
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This patch implements the new gdbarch method gdbarch_gdb_signal_to_target.
It will be used when one wants to convert between the internal GDB signal
representation (enum gdb_signal) and the target's representation.
The idea of this patch came from a chat between Pedro and I on IRC, plus
the discussion of my patches to add the new $_exitsignal convenience
variable:
<http://sourceware.org/ml/gdb-patches/2013-06/msg00452.html>
<http://sourceware.org/ml/gdb-patches/2013-06/msg00352.html>
What I did was to investigate, on the Linux kernel, which targets shared
the signal numbers definition with the generic definition, present at
<include/uapi/asm-generic/signal.h>. For the record, I used linux-3.10-rc7
as the main source of information, always looking at
<arch/<ARCH_NAME>/include/uapi/asm/signal.h>. For SIGRTMAX (which defaults
to _NSIG in most cases), I had to look at different signal-related
files, but most of them (except MIPS) were defined to 64 anyway.
Then, with all the differences in hand, I implemented the bits on each
target.
2013-08-09 Sergio Durigan Junior <sergiodj@redhat.com>
* linux-tdep.c: Define enum with generic signal numbers.
(linux_gdb_signal_from_target): New function.
(linux_gdb_signal_to_target): Likewise.
(linux_init_abi): Set gdbarch_gdb_signal_{to,from}_target
methods to the functions above.
* linux-tdep.h (linux_gdb_signal_from_target): New prototype.
(linux_gdb_signal_to_target): Likewise.
* alpha-linux-tdep.c: Define new enum with signals different
from generic Linux kernel.
(alpha_linux_gdb_signal_from_target): New function.
(alpha_linux_gdb_signal_to_target): Likewise.
(alpha_linux_init_abi): Set gdbarch_gdb_signal_{to,from}_target
with the functions mentioned above.
* avr-tdep.c: Define enum with differences between Linux kernel
and AVR signals.
(avr_linux_gdb_signal_from_target): New function.
(avr_linux_gdb_signal_to_target): Likewise.
(avr_gdbarch_init): Set gdbarch_gdb_signal_{to,from}_target to
the functions mentioned above.
* sparc-linux-tdep.c: Define enum with differences between SPARC
and generic Linux kernel signal numbers.
(sparc32_linux_gdb_signal_from_target): New function.
(sparc32_linux_gdb_signal_to_target): Likewise.
(sparc32_linux_init_abi): Set gdbarch_gdb_signal_{to,from}_target
to the functions defined above.
* xtensa-linux-tdep.c: Define enum with differences between
Xtensa and Linux kernel generic signals.
(xtensa_linux_gdb_signal_from_target): New function.
(xtensa_linux_gdb_signal_to_target): Likewise.
(xtensa_linux_init_abi): Set gdbarch_gdb_signal_to_target
to the functions defined above.
* mips-linux-tdep.c: Define enum with differences between
signals in MIPS and Linux kernel generic ones.
(mips_gdb_signal_to_target): New function.
(mips_gdb_signal_from_target): Redefine to use new enum, handle
only different signals from the Linux kernel generic.
(mips_linux_init_abi): Set gdbarch_gdb_signal_{to,from}_target
the functions defined above.
* mips-linux-tdep.h (enum mips_signals): Remove.
2013-08-10 00:54:43 +08:00
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|
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/* Signal translation: translate the GDB's internal signal number into
|
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|
|
the inferior's signal (target's) representation. The implementation
|
|
|
|
|
of this method must be host independent. IOW, don't rely on symbols
|
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|
|
|
of the NAT_FILE header (the nm-*.h files), the host <signal.h>
|
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|
|
|
header, or similar headers.
|
|
|
|
|
Return the target signal number if found, or -1 if the GDB internal
|
|
|
|
|
signal number is invalid. */
|
|
|
|
|
|
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|
|
|
extern int gdbarch_gdb_signal_to_target_p (struct gdbarch *gdbarch);
|
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|
|
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|
|
|
typedef int (gdbarch_gdb_signal_to_target_ftype) (struct gdbarch *gdbarch, enum gdb_signal signal);
|
|
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|
|
extern int gdbarch_gdb_signal_to_target (struct gdbarch *gdbarch, enum gdb_signal signal);
|
|
|
|
|
extern void set_gdbarch_gdb_signal_to_target (struct gdbarch *gdbarch, gdbarch_gdb_signal_to_target_ftype *gdb_signal_to_target);
|
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|
2009-02-07 06:59:01 +08:00
|
|
|
/* Extra signal info inspection.
|
2009-02-16 11:16:24 +08:00
|
|
|
|
2009-02-07 06:59:01 +08:00
|
|
|
Return a type suitable to inspect extra signal information. */
|
|
|
|
|
|
|
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|
|
extern int gdbarch_get_siginfo_type_p (struct gdbarch *gdbarch);
|
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|
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|
|
typedef struct type * (gdbarch_get_siginfo_type_ftype) (struct gdbarch *gdbarch);
|
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|
|
extern struct type * gdbarch_get_siginfo_type (struct gdbarch *gdbarch);
|
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|
|
extern void set_gdbarch_get_siginfo_type (struct gdbarch *gdbarch, gdbarch_get_siginfo_type_ftype *get_siginfo_type);
|
|
|
|
|
|
2008-05-03 04:38:16 +08:00
|
|
|
/* Record architecture-specific information from the symbol table. */
|
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|
|
|
|
extern int gdbarch_record_special_symbol_p (struct gdbarch *gdbarch);
|
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|
|
typedef void (gdbarch_record_special_symbol_ftype) (struct gdbarch *gdbarch, struct objfile *objfile, asymbol *sym);
|
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|
|
extern void gdbarch_record_special_symbol (struct gdbarch *gdbarch, struct objfile *objfile, asymbol *sym);
|
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|
extern void set_gdbarch_record_special_symbol (struct gdbarch *gdbarch, gdbarch_record_special_symbol_ftype *record_special_symbol);
|
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|
2009-09-15 11:30:08 +08:00
|
|
|
/* Function for the 'catch syscall' feature.
|
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|
|
Get architecture-specific system calls information from registers. */
|
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|
|
extern int gdbarch_get_syscall_number_p (struct gdbarch *gdbarch);
|
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|
|
typedef LONGEST (gdbarch_get_syscall_number_ftype) (struct gdbarch *gdbarch, ptid_t ptid);
|
|
|
|
|
extern LONGEST gdbarch_get_syscall_number (struct gdbarch *gdbarch, ptid_t ptid);
|
|
|
|
|
extern void set_gdbarch_get_syscall_number (struct gdbarch *gdbarch, gdbarch_get_syscall_number_ftype *get_syscall_number);
|
|
|
|
|
|
Partial fix for PR breakpoints/10737: Make syscall info be per-arch instead of global
This patch intends to partially fix PR breakpoints/10737, which is
about making the syscall information (for the "catch syscall" command)
be per-arch, instead of global. This is not a full fix because of the
other issues pointed by Pedro here:
<https://sourceware.org/bugzilla/show_bug.cgi?id=10737#c5>
However, I consider it a good step towards the real fix. It will also
help me fix <https://sourceware.org/bugzilla/show_bug.cgi?id=17402>.
What this patch does, basically, is move the "syscalls_info"
struct to gdbarch. Currently, the syscall information is stored in a
global variable inside gdb/xml-syscall.c, which means that there is no
easy way to correlate this info with the current target or
architecture being used, for example. This causes strange behaviors,
because the syscall info is not re-read when the arch changes. For
example, if you put a syscall catchpoint in syscall 5 on i386 (syscall
open), and then load a x86_64 program on GDB and put the same syscall
5 there (fstat on x86_64), you will still see that GDB tells you that
it is catching "open", even though it is not. With this patch, GDB
correctly says that it will be catching fstat syscalls.
(gdb) set architecture i386
The target architecture is assumed to be i386
(gdb) catch syscall 5
Catchpoint 1 (syscall 'open' [5])
(gdb) set architecture i386:x86-64
The target architecture is assumed to be i386:x86-64
(gdb) catch syscall 5
Catchpoint 2 (syscall 'open' [5])
But with the patch:
(gdb) set architecture i386
The target architecture is assumed to be i386
(gdb) catch syscall 5
Catchpoint 1 (syscall 'open' [5])
(gdb) set architecture i386:x86-64
The target architecture is assumed to be i386:x86-64
(gdb) catch syscall 5
Catchpoint 2 (syscall 'fstat' [5])
As I said, there are still some problems on the "catch syscall"
mechanism, because (for example) the user should be able to "catch
syscall open" on i386, and then expect "open" to be caught also on
x86_64. Currently, it doesn't work. I intend to work on this later.
gdb/
2014-11-20 Sergio Durigan Junior <sergiodj@redhat.com>
PR breakpoints/10737
* amd64-linux-tdep.c (amd64_linux_init_abi_common): Adjust call to
set_xml_syscall_file_name to provide gdbarch.
* arm-linux-tdep.c (arm_linux_init_abi): Likewise.
* bfin-linux-tdep.c (bfin_linux_init_abi): Likewise.
* breakpoint.c (print_it_catch_syscall): Adjust call to
get_syscall_by_number to provide gdbarch.
(print_one_catch_syscall): Likewise.
(print_mention_catch_syscall): Likewise.
(print_recreate_catch_syscall): Likewise.
(catch_syscall_split_args): Adjust calls to get_syscall_by_number
and get_syscall_by_name to provide gdbarch.
(catch_syscall_completer): Adjust call to get_syscall_names to
provide gdbarch.
* gdbarch.c: Regenerate.
* gdbarch.h: Likewise.
* gdbarch.sh: Forward declare "struct syscalls_info".
(xml_syscall_file): New variable.
(syscalls_info): Likewise.
* i386-linux-tdep.c (i386_linux_init_abi): Adjust call to
set_xml_syscall_file_name to provide gdbarch.
* mips-linux-tdep.c (mips_linux_init_abi): Likewise.
* ppc-linux-tdep.c (ppc_linux_init_abi): Likewise.
* s390-linux-tdep.c (s390_gdbarch_init): Likewise.
* sparc-linux-tdep.c (sparc32_linux_init_abi): Likewise.
* sparc64-linux-tdep.c (sparc64_linux_init_abi): Likewise.
* xml-syscall.c: Include gdbarch.h.
(set_xml_syscall_file_name): Accept gdbarch parameter.
(get_syscall_by_number): Likewise.
(get_syscall_by_name): Likewise.
(get_syscall_names): Likewise.
(my_gdb_datadir): Delete global variable.
(struct syscalls_info) <my_gdb_datadir>: New variable.
(struct syscalls_info) <sysinfo>: Rename variable to
"syscalls_info".
(sysinfo): Delete global variable.
(have_initialized_sysinfo): Likewise.
(xml_syscall_file): Likewise.
(sysinfo_free_syscalls_desc): Rename to...
(syscalls_info_free_syscalls_desc): ... this.
(free_syscalls_info): Rename "sysinfo" to "syscalls_info". Adjust
code to the new layout of "struct syscalls_info".
(make_cleanup_free_syscalls_info): Rename parameter "sysinfo" to
"syscalls_info".
(syscall_create_syscall_desc): Likewise.
(syscall_start_syscall): Likewise.
(syscall_parse_xml): Likewise.
(xml_init_syscalls_info): Likewise. Drop "const" from return value.
(init_sysinfo): Rename to...
(init_syscalls_info): ...this. Add gdbarch as a parameter.
Adjust function to deal with gdbarch.
(xml_get_syscall_number): Delete parameter sysinfo. Accept
gdbarch as a parameter. Adjust code.
(xml_get_syscall_name): Likewise.
(xml_list_of_syscalls): Likewise.
(set_xml_syscall_file_name): Accept gdbarch as parameter.
(get_syscall_by_number): Likewise.
(get_syscall_by_name): Likewise.
(get_syscall_names): Likewise.
* xml-syscall.h (set_xml_syscall_file_name): Likewise.
(get_syscall_by_number): Likewise.
(get_syscall_by_name): Likewise.
(get_syscall_names): Likewise.
gdb/testsuite/
2014-11-20 Sergio Durigan Junior <sergiodj@redhat.com>
PR breakpoints/10737
* gdb.base/catch-syscall.exp (do_syscall_tests): Call
test_catch_syscall_multi_arch.
(test_catch_syscall_multi_arch): New function.
2014-11-21 01:28:18 +08:00
|
|
|
/* The filename of the XML syscall for this architecture. */
|
|
|
|
|
|
|
|
|
|
extern const char * gdbarch_xml_syscall_file (struct gdbarch *gdbarch);
|
|
|
|
|
extern void set_gdbarch_xml_syscall_file (struct gdbarch *gdbarch, const char * xml_syscall_file);
|
|
|
|
|
|
|
|
|
|
/* Information about system calls from this architecture */
|
|
|
|
|
|
|
|
|
|
extern struct syscalls_info * gdbarch_syscalls_info (struct gdbarch *gdbarch);
|
|
|
|
|
extern void set_gdbarch_syscalls_info (struct gdbarch *gdbarch, struct syscalls_info * syscalls_info);
|
|
|
|
|
|
2012-04-28 04:47:57 +08:00
|
|
|
/* SystemTap related fields and functions.
|
Extend SystemTap SDT probe argument parser
This patch extends the current generic parser for SystemTap SDT probe
arguments. It can be almost considered a cleanup, but the main point of
it is actually to allow the generic parser to accept multiple prefixes
and suffixes for the its operands (i.e., integers, register names, and
register indirection).
I have chosen to implement this as a list of const strings, and declare
this list as "static" inside each target's method used to initialize
gdbarch.
This patch is actually a preparation for an upcoming patch for ARM,
which implements the support for multiple integer prefixes (as defined
by ARM's asm spec). And AArch64 will also need this, for the same
reason.
This patch was regtested on all architectures that it touches (i.e.,
i386, x86_64, ARM, PPC/PPC64, s390x and IA-64). No regressions were found.
2013-12-19 Sergio Durigan Junior <sergiodj@redhat.com>
* amd64-tdep.c (amd64_init_abi): Declare SystemTap SDT probe
argument prefixes and suffixes. Initialize gdbarch with them.
* arm-linux-tdep.c (arm_linux_init_abi): Likewise.
* gdbarch.c: Regenerate.
* gdbarch.h: Regenerate.
* gdbarch.sh (stap_integer_prefix, stap_integer_suffix)
(stap_register_prefix, stap_register_suffix)
(stap_register_indirection_prefix)
(stap_register_indirection_suffix): Declare as "const char *const
*" instead of "const char *". Adjust printing function. Rename
all of the variables to the plural.
(pstring_list): New function.
* i386-tdep.c (i386_elf_init_abi): Declare SystemTap SDT probe
argument prefixes and suffixes. Initialize gdbarch with them.
* ia64-linux-tdep.c (ia64_linux_init_abi): Likewise.
* ppc-linux-tdep.c (ppc_linux_init_abi): Likewise.
* s390-linux-tdep.c (s390_gdbarch_init): Likewise.
* stap-probe.c (stap_is_generic_prefix): New function.
(stap_is_register_prefix): Likewise.
(stap_is_register_indirection_prefix): Likewise.
(stap_is_integer_prefix): Likewise.
(stap_generic_check_suffix): Likewise.
(stap_check_integer_suffix): Likewise.
(stap_check_register_suffix): Likewise.
(stap_check_register_indirection_suffix): Likewise.
(stap_parse_register_operand): Remove unecessary declarations for
variables holding prefix and suffix information. Use the new
functions listed above for checking for prefixes and suffixes.
(stap_parse_single_operand): Likewise.
2013-12-20 04:53:40 +08:00
|
|
|
A NULL-terminated array of prefixes used to mark an integer constant
|
|
|
|
|
on the architecture's assembly.
|
2012-04-28 04:47:57 +08:00
|
|
|
For example, on x86 integer constants are written as:
|
|
|
|
|
|
|
|
|
|
$10 ;; integer constant 10
|
|
|
|
|
|
|
|
|
|
in this case, this prefix would be the character `$'. */
|
|
|
|
|
|
Extend SystemTap SDT probe argument parser
This patch extends the current generic parser for SystemTap SDT probe
arguments. It can be almost considered a cleanup, but the main point of
it is actually to allow the generic parser to accept multiple prefixes
and suffixes for the its operands (i.e., integers, register names, and
register indirection).
I have chosen to implement this as a list of const strings, and declare
this list as "static" inside each target's method used to initialize
gdbarch.
This patch is actually a preparation for an upcoming patch for ARM,
which implements the support for multiple integer prefixes (as defined
by ARM's asm spec). And AArch64 will also need this, for the same
reason.
This patch was regtested on all architectures that it touches (i.e.,
i386, x86_64, ARM, PPC/PPC64, s390x and IA-64). No regressions were found.
2013-12-19 Sergio Durigan Junior <sergiodj@redhat.com>
* amd64-tdep.c (amd64_init_abi): Declare SystemTap SDT probe
argument prefixes and suffixes. Initialize gdbarch with them.
* arm-linux-tdep.c (arm_linux_init_abi): Likewise.
* gdbarch.c: Regenerate.
* gdbarch.h: Regenerate.
* gdbarch.sh (stap_integer_prefix, stap_integer_suffix)
(stap_register_prefix, stap_register_suffix)
(stap_register_indirection_prefix)
(stap_register_indirection_suffix): Declare as "const char *const
*" instead of "const char *". Adjust printing function. Rename
all of the variables to the plural.
(pstring_list): New function.
* i386-tdep.c (i386_elf_init_abi): Declare SystemTap SDT probe
argument prefixes and suffixes. Initialize gdbarch with them.
* ia64-linux-tdep.c (ia64_linux_init_abi): Likewise.
* ppc-linux-tdep.c (ppc_linux_init_abi): Likewise.
* s390-linux-tdep.c (s390_gdbarch_init): Likewise.
* stap-probe.c (stap_is_generic_prefix): New function.
(stap_is_register_prefix): Likewise.
(stap_is_register_indirection_prefix): Likewise.
(stap_is_integer_prefix): Likewise.
(stap_generic_check_suffix): Likewise.
(stap_check_integer_suffix): Likewise.
(stap_check_register_suffix): Likewise.
(stap_check_register_indirection_suffix): Likewise.
(stap_parse_register_operand): Remove unecessary declarations for
variables holding prefix and suffix information. Use the new
functions listed above for checking for prefixes and suffixes.
(stap_parse_single_operand): Likewise.
2013-12-20 04:53:40 +08:00
|
|
|
extern const char *const * gdbarch_stap_integer_prefixes (struct gdbarch *gdbarch);
|
|
|
|
|
extern void set_gdbarch_stap_integer_prefixes (struct gdbarch *gdbarch, const char *const * stap_integer_prefixes);
|
2012-04-28 04:47:57 +08:00
|
|
|
|
Extend SystemTap SDT probe argument parser
This patch extends the current generic parser for SystemTap SDT probe
arguments. It can be almost considered a cleanup, but the main point of
it is actually to allow the generic parser to accept multiple prefixes
and suffixes for the its operands (i.e., integers, register names, and
register indirection).
I have chosen to implement this as a list of const strings, and declare
this list as "static" inside each target's method used to initialize
gdbarch.
This patch is actually a preparation for an upcoming patch for ARM,
which implements the support for multiple integer prefixes (as defined
by ARM's asm spec). And AArch64 will also need this, for the same
reason.
This patch was regtested on all architectures that it touches (i.e.,
i386, x86_64, ARM, PPC/PPC64, s390x and IA-64). No regressions were found.
2013-12-19 Sergio Durigan Junior <sergiodj@redhat.com>
* amd64-tdep.c (amd64_init_abi): Declare SystemTap SDT probe
argument prefixes and suffixes. Initialize gdbarch with them.
* arm-linux-tdep.c (arm_linux_init_abi): Likewise.
* gdbarch.c: Regenerate.
* gdbarch.h: Regenerate.
* gdbarch.sh (stap_integer_prefix, stap_integer_suffix)
(stap_register_prefix, stap_register_suffix)
(stap_register_indirection_prefix)
(stap_register_indirection_suffix): Declare as "const char *const
*" instead of "const char *". Adjust printing function. Rename
all of the variables to the plural.
(pstring_list): New function.
* i386-tdep.c (i386_elf_init_abi): Declare SystemTap SDT probe
argument prefixes and suffixes. Initialize gdbarch with them.
* ia64-linux-tdep.c (ia64_linux_init_abi): Likewise.
* ppc-linux-tdep.c (ppc_linux_init_abi): Likewise.
* s390-linux-tdep.c (s390_gdbarch_init): Likewise.
* stap-probe.c (stap_is_generic_prefix): New function.
(stap_is_register_prefix): Likewise.
(stap_is_register_indirection_prefix): Likewise.
(stap_is_integer_prefix): Likewise.
(stap_generic_check_suffix): Likewise.
(stap_check_integer_suffix): Likewise.
(stap_check_register_suffix): Likewise.
(stap_check_register_indirection_suffix): Likewise.
(stap_parse_register_operand): Remove unecessary declarations for
variables holding prefix and suffix information. Use the new
functions listed above for checking for prefixes and suffixes.
(stap_parse_single_operand): Likewise.
2013-12-20 04:53:40 +08:00
|
|
|
/* A NULL-terminated array of suffixes used to mark an integer constant
|
|
|
|
|
on the architecture's assembly. */
|
2012-04-28 04:47:57 +08:00
|
|
|
|
Extend SystemTap SDT probe argument parser
This patch extends the current generic parser for SystemTap SDT probe
arguments. It can be almost considered a cleanup, but the main point of
it is actually to allow the generic parser to accept multiple prefixes
and suffixes for the its operands (i.e., integers, register names, and
register indirection).
I have chosen to implement this as a list of const strings, and declare
this list as "static" inside each target's method used to initialize
gdbarch.
This patch is actually a preparation for an upcoming patch for ARM,
which implements the support for multiple integer prefixes (as defined
by ARM's asm spec). And AArch64 will also need this, for the same
reason.
This patch was regtested on all architectures that it touches (i.e.,
i386, x86_64, ARM, PPC/PPC64, s390x and IA-64). No regressions were found.
2013-12-19 Sergio Durigan Junior <sergiodj@redhat.com>
* amd64-tdep.c (amd64_init_abi): Declare SystemTap SDT probe
argument prefixes and suffixes. Initialize gdbarch with them.
* arm-linux-tdep.c (arm_linux_init_abi): Likewise.
* gdbarch.c: Regenerate.
* gdbarch.h: Regenerate.
* gdbarch.sh (stap_integer_prefix, stap_integer_suffix)
(stap_register_prefix, stap_register_suffix)
(stap_register_indirection_prefix)
(stap_register_indirection_suffix): Declare as "const char *const
*" instead of "const char *". Adjust printing function. Rename
all of the variables to the plural.
(pstring_list): New function.
* i386-tdep.c (i386_elf_init_abi): Declare SystemTap SDT probe
argument prefixes and suffixes. Initialize gdbarch with them.
* ia64-linux-tdep.c (ia64_linux_init_abi): Likewise.
* ppc-linux-tdep.c (ppc_linux_init_abi): Likewise.
* s390-linux-tdep.c (s390_gdbarch_init): Likewise.
* stap-probe.c (stap_is_generic_prefix): New function.
(stap_is_register_prefix): Likewise.
(stap_is_register_indirection_prefix): Likewise.
(stap_is_integer_prefix): Likewise.
(stap_generic_check_suffix): Likewise.
(stap_check_integer_suffix): Likewise.
(stap_check_register_suffix): Likewise.
(stap_check_register_indirection_suffix): Likewise.
(stap_parse_register_operand): Remove unecessary declarations for
variables holding prefix and suffix information. Use the new
functions listed above for checking for prefixes and suffixes.
(stap_parse_single_operand): Likewise.
2013-12-20 04:53:40 +08:00
|
|
|
extern const char *const * gdbarch_stap_integer_suffixes (struct gdbarch *gdbarch);
|
|
|
|
|
extern void set_gdbarch_stap_integer_suffixes (struct gdbarch *gdbarch, const char *const * stap_integer_suffixes);
|
2012-04-28 04:47:57 +08:00
|
|
|
|
Extend SystemTap SDT probe argument parser
This patch extends the current generic parser for SystemTap SDT probe
arguments. It can be almost considered a cleanup, but the main point of
it is actually to allow the generic parser to accept multiple prefixes
and suffixes for the its operands (i.e., integers, register names, and
register indirection).
I have chosen to implement this as a list of const strings, and declare
this list as "static" inside each target's method used to initialize
gdbarch.
This patch is actually a preparation for an upcoming patch for ARM,
which implements the support for multiple integer prefixes (as defined
by ARM's asm spec). And AArch64 will also need this, for the same
reason.
This patch was regtested on all architectures that it touches (i.e.,
i386, x86_64, ARM, PPC/PPC64, s390x and IA-64). No regressions were found.
2013-12-19 Sergio Durigan Junior <sergiodj@redhat.com>
* amd64-tdep.c (amd64_init_abi): Declare SystemTap SDT probe
argument prefixes and suffixes. Initialize gdbarch with them.
* arm-linux-tdep.c (arm_linux_init_abi): Likewise.
* gdbarch.c: Regenerate.
* gdbarch.h: Regenerate.
* gdbarch.sh (stap_integer_prefix, stap_integer_suffix)
(stap_register_prefix, stap_register_suffix)
(stap_register_indirection_prefix)
(stap_register_indirection_suffix): Declare as "const char *const
*" instead of "const char *". Adjust printing function. Rename
all of the variables to the plural.
(pstring_list): New function.
* i386-tdep.c (i386_elf_init_abi): Declare SystemTap SDT probe
argument prefixes and suffixes. Initialize gdbarch with them.
* ia64-linux-tdep.c (ia64_linux_init_abi): Likewise.
* ppc-linux-tdep.c (ppc_linux_init_abi): Likewise.
* s390-linux-tdep.c (s390_gdbarch_init): Likewise.
* stap-probe.c (stap_is_generic_prefix): New function.
(stap_is_register_prefix): Likewise.
(stap_is_register_indirection_prefix): Likewise.
(stap_is_integer_prefix): Likewise.
(stap_generic_check_suffix): Likewise.
(stap_check_integer_suffix): Likewise.
(stap_check_register_suffix): Likewise.
(stap_check_register_indirection_suffix): Likewise.
(stap_parse_register_operand): Remove unecessary declarations for
variables holding prefix and suffix information. Use the new
functions listed above for checking for prefixes and suffixes.
(stap_parse_single_operand): Likewise.
2013-12-20 04:53:40 +08:00
|
|
|
/* A NULL-terminated array of prefixes used to mark a register name on
|
|
|
|
|
the architecture's assembly.
|
2012-04-28 04:47:57 +08:00
|
|
|
For example, on x86 the register name is written as:
|
|
|
|
|
|
|
|
|
|
%eax ;; register eax
|
|
|
|
|
|
|
|
|
|
in this case, this prefix would be the character `%'. */
|
|
|
|
|
|
Extend SystemTap SDT probe argument parser
This patch extends the current generic parser for SystemTap SDT probe
arguments. It can be almost considered a cleanup, but the main point of
it is actually to allow the generic parser to accept multiple prefixes
and suffixes for the its operands (i.e., integers, register names, and
register indirection).
I have chosen to implement this as a list of const strings, and declare
this list as "static" inside each target's method used to initialize
gdbarch.
This patch is actually a preparation for an upcoming patch for ARM,
which implements the support for multiple integer prefixes (as defined
by ARM's asm spec). And AArch64 will also need this, for the same
reason.
This patch was regtested on all architectures that it touches (i.e.,
i386, x86_64, ARM, PPC/PPC64, s390x and IA-64). No regressions were found.
2013-12-19 Sergio Durigan Junior <sergiodj@redhat.com>
* amd64-tdep.c (amd64_init_abi): Declare SystemTap SDT probe
argument prefixes and suffixes. Initialize gdbarch with them.
* arm-linux-tdep.c (arm_linux_init_abi): Likewise.
* gdbarch.c: Regenerate.
* gdbarch.h: Regenerate.
* gdbarch.sh (stap_integer_prefix, stap_integer_suffix)
(stap_register_prefix, stap_register_suffix)
(stap_register_indirection_prefix)
(stap_register_indirection_suffix): Declare as "const char *const
*" instead of "const char *". Adjust printing function. Rename
all of the variables to the plural.
(pstring_list): New function.
* i386-tdep.c (i386_elf_init_abi): Declare SystemTap SDT probe
argument prefixes and suffixes. Initialize gdbarch with them.
* ia64-linux-tdep.c (ia64_linux_init_abi): Likewise.
* ppc-linux-tdep.c (ppc_linux_init_abi): Likewise.
* s390-linux-tdep.c (s390_gdbarch_init): Likewise.
* stap-probe.c (stap_is_generic_prefix): New function.
(stap_is_register_prefix): Likewise.
(stap_is_register_indirection_prefix): Likewise.
(stap_is_integer_prefix): Likewise.
(stap_generic_check_suffix): Likewise.
(stap_check_integer_suffix): Likewise.
(stap_check_register_suffix): Likewise.
(stap_check_register_indirection_suffix): Likewise.
(stap_parse_register_operand): Remove unecessary declarations for
variables holding prefix and suffix information. Use the new
functions listed above for checking for prefixes and suffixes.
(stap_parse_single_operand): Likewise.
2013-12-20 04:53:40 +08:00
|
|
|
extern const char *const * gdbarch_stap_register_prefixes (struct gdbarch *gdbarch);
|
|
|
|
|
extern void set_gdbarch_stap_register_prefixes (struct gdbarch *gdbarch, const char *const * stap_register_prefixes);
|
2012-04-28 04:47:57 +08:00
|
|
|
|
Extend SystemTap SDT probe argument parser
This patch extends the current generic parser for SystemTap SDT probe
arguments. It can be almost considered a cleanup, but the main point of
it is actually to allow the generic parser to accept multiple prefixes
and suffixes for the its operands (i.e., integers, register names, and
register indirection).
I have chosen to implement this as a list of const strings, and declare
this list as "static" inside each target's method used to initialize
gdbarch.
This patch is actually a preparation for an upcoming patch for ARM,
which implements the support for multiple integer prefixes (as defined
by ARM's asm spec). And AArch64 will also need this, for the same
reason.
This patch was regtested on all architectures that it touches (i.e.,
i386, x86_64, ARM, PPC/PPC64, s390x and IA-64). No regressions were found.
2013-12-19 Sergio Durigan Junior <sergiodj@redhat.com>
* amd64-tdep.c (amd64_init_abi): Declare SystemTap SDT probe
argument prefixes and suffixes. Initialize gdbarch with them.
* arm-linux-tdep.c (arm_linux_init_abi): Likewise.
* gdbarch.c: Regenerate.
* gdbarch.h: Regenerate.
* gdbarch.sh (stap_integer_prefix, stap_integer_suffix)
(stap_register_prefix, stap_register_suffix)
(stap_register_indirection_prefix)
(stap_register_indirection_suffix): Declare as "const char *const
*" instead of "const char *". Adjust printing function. Rename
all of the variables to the plural.
(pstring_list): New function.
* i386-tdep.c (i386_elf_init_abi): Declare SystemTap SDT probe
argument prefixes and suffixes. Initialize gdbarch with them.
* ia64-linux-tdep.c (ia64_linux_init_abi): Likewise.
* ppc-linux-tdep.c (ppc_linux_init_abi): Likewise.
* s390-linux-tdep.c (s390_gdbarch_init): Likewise.
* stap-probe.c (stap_is_generic_prefix): New function.
(stap_is_register_prefix): Likewise.
(stap_is_register_indirection_prefix): Likewise.
(stap_is_integer_prefix): Likewise.
(stap_generic_check_suffix): Likewise.
(stap_check_integer_suffix): Likewise.
(stap_check_register_suffix): Likewise.
(stap_check_register_indirection_suffix): Likewise.
(stap_parse_register_operand): Remove unecessary declarations for
variables holding prefix and suffix information. Use the new
functions listed above for checking for prefixes and suffixes.
(stap_parse_single_operand): Likewise.
2013-12-20 04:53:40 +08:00
|
|
|
/* A NULL-terminated array of suffixes used to mark a register name on
|
|
|
|
|
the architecture's assembly. */
|
2012-04-28 04:47:57 +08:00
|
|
|
|
Extend SystemTap SDT probe argument parser
This patch extends the current generic parser for SystemTap SDT probe
arguments. It can be almost considered a cleanup, but the main point of
it is actually to allow the generic parser to accept multiple prefixes
and suffixes for the its operands (i.e., integers, register names, and
register indirection).
I have chosen to implement this as a list of const strings, and declare
this list as "static" inside each target's method used to initialize
gdbarch.
This patch is actually a preparation for an upcoming patch for ARM,
which implements the support for multiple integer prefixes (as defined
by ARM's asm spec). And AArch64 will also need this, for the same
reason.
This patch was regtested on all architectures that it touches (i.e.,
i386, x86_64, ARM, PPC/PPC64, s390x and IA-64). No regressions were found.
2013-12-19 Sergio Durigan Junior <sergiodj@redhat.com>
* amd64-tdep.c (amd64_init_abi): Declare SystemTap SDT probe
argument prefixes and suffixes. Initialize gdbarch with them.
* arm-linux-tdep.c (arm_linux_init_abi): Likewise.
* gdbarch.c: Regenerate.
* gdbarch.h: Regenerate.
* gdbarch.sh (stap_integer_prefix, stap_integer_suffix)
(stap_register_prefix, stap_register_suffix)
(stap_register_indirection_prefix)
(stap_register_indirection_suffix): Declare as "const char *const
*" instead of "const char *". Adjust printing function. Rename
all of the variables to the plural.
(pstring_list): New function.
* i386-tdep.c (i386_elf_init_abi): Declare SystemTap SDT probe
argument prefixes and suffixes. Initialize gdbarch with them.
* ia64-linux-tdep.c (ia64_linux_init_abi): Likewise.
* ppc-linux-tdep.c (ppc_linux_init_abi): Likewise.
* s390-linux-tdep.c (s390_gdbarch_init): Likewise.
* stap-probe.c (stap_is_generic_prefix): New function.
(stap_is_register_prefix): Likewise.
(stap_is_register_indirection_prefix): Likewise.
(stap_is_integer_prefix): Likewise.
(stap_generic_check_suffix): Likewise.
(stap_check_integer_suffix): Likewise.
(stap_check_register_suffix): Likewise.
(stap_check_register_indirection_suffix): Likewise.
(stap_parse_register_operand): Remove unecessary declarations for
variables holding prefix and suffix information. Use the new
functions listed above for checking for prefixes and suffixes.
(stap_parse_single_operand): Likewise.
2013-12-20 04:53:40 +08:00
|
|
|
extern const char *const * gdbarch_stap_register_suffixes (struct gdbarch *gdbarch);
|
|
|
|
|
extern void set_gdbarch_stap_register_suffixes (struct gdbarch *gdbarch, const char *const * stap_register_suffixes);
|
2012-04-28 04:47:57 +08:00
|
|
|
|
Extend SystemTap SDT probe argument parser
This patch extends the current generic parser for SystemTap SDT probe
arguments. It can be almost considered a cleanup, but the main point of
it is actually to allow the generic parser to accept multiple prefixes
and suffixes for the its operands (i.e., integers, register names, and
register indirection).
I have chosen to implement this as a list of const strings, and declare
this list as "static" inside each target's method used to initialize
gdbarch.
This patch is actually a preparation for an upcoming patch for ARM,
which implements the support for multiple integer prefixes (as defined
by ARM's asm spec). And AArch64 will also need this, for the same
reason.
This patch was regtested on all architectures that it touches (i.e.,
i386, x86_64, ARM, PPC/PPC64, s390x and IA-64). No regressions were found.
2013-12-19 Sergio Durigan Junior <sergiodj@redhat.com>
* amd64-tdep.c (amd64_init_abi): Declare SystemTap SDT probe
argument prefixes and suffixes. Initialize gdbarch with them.
* arm-linux-tdep.c (arm_linux_init_abi): Likewise.
* gdbarch.c: Regenerate.
* gdbarch.h: Regenerate.
* gdbarch.sh (stap_integer_prefix, stap_integer_suffix)
(stap_register_prefix, stap_register_suffix)
(stap_register_indirection_prefix)
(stap_register_indirection_suffix): Declare as "const char *const
*" instead of "const char *". Adjust printing function. Rename
all of the variables to the plural.
(pstring_list): New function.
* i386-tdep.c (i386_elf_init_abi): Declare SystemTap SDT probe
argument prefixes and suffixes. Initialize gdbarch with them.
* ia64-linux-tdep.c (ia64_linux_init_abi): Likewise.
* ppc-linux-tdep.c (ppc_linux_init_abi): Likewise.
* s390-linux-tdep.c (s390_gdbarch_init): Likewise.
* stap-probe.c (stap_is_generic_prefix): New function.
(stap_is_register_prefix): Likewise.
(stap_is_register_indirection_prefix): Likewise.
(stap_is_integer_prefix): Likewise.
(stap_generic_check_suffix): Likewise.
(stap_check_integer_suffix): Likewise.
(stap_check_register_suffix): Likewise.
(stap_check_register_indirection_suffix): Likewise.
(stap_parse_register_operand): Remove unecessary declarations for
variables holding prefix and suffix information. Use the new
functions listed above for checking for prefixes and suffixes.
(stap_parse_single_operand): Likewise.
2013-12-20 04:53:40 +08:00
|
|
|
/* A NULL-terminated array of prefixes used to mark a register
|
|
|
|
|
indirection on the architecture's assembly.
|
2012-04-28 04:47:57 +08:00
|
|
|
For example, on x86 the register indirection is written as:
|
|
|
|
|
|
|
|
|
|
(%eax) ;; indirecting eax
|
|
|
|
|
|
|
|
|
|
in this case, this prefix would be the charater `('.
|
|
|
|
|
|
|
|
|
|
Please note that we use the indirection prefix also for register
|
|
|
|
|
displacement, e.g., `4(%eax)' on x86. */
|
|
|
|
|
|
Extend SystemTap SDT probe argument parser
This patch extends the current generic parser for SystemTap SDT probe
arguments. It can be almost considered a cleanup, but the main point of
it is actually to allow the generic parser to accept multiple prefixes
and suffixes for the its operands (i.e., integers, register names, and
register indirection).
I have chosen to implement this as a list of const strings, and declare
this list as "static" inside each target's method used to initialize
gdbarch.
This patch is actually a preparation for an upcoming patch for ARM,
which implements the support for multiple integer prefixes (as defined
by ARM's asm spec). And AArch64 will also need this, for the same
reason.
This patch was regtested on all architectures that it touches (i.e.,
i386, x86_64, ARM, PPC/PPC64, s390x and IA-64). No regressions were found.
2013-12-19 Sergio Durigan Junior <sergiodj@redhat.com>
* amd64-tdep.c (amd64_init_abi): Declare SystemTap SDT probe
argument prefixes and suffixes. Initialize gdbarch with them.
* arm-linux-tdep.c (arm_linux_init_abi): Likewise.
* gdbarch.c: Regenerate.
* gdbarch.h: Regenerate.
* gdbarch.sh (stap_integer_prefix, stap_integer_suffix)
(stap_register_prefix, stap_register_suffix)
(stap_register_indirection_prefix)
(stap_register_indirection_suffix): Declare as "const char *const
*" instead of "const char *". Adjust printing function. Rename
all of the variables to the plural.
(pstring_list): New function.
* i386-tdep.c (i386_elf_init_abi): Declare SystemTap SDT probe
argument prefixes and suffixes. Initialize gdbarch with them.
* ia64-linux-tdep.c (ia64_linux_init_abi): Likewise.
* ppc-linux-tdep.c (ppc_linux_init_abi): Likewise.
* s390-linux-tdep.c (s390_gdbarch_init): Likewise.
* stap-probe.c (stap_is_generic_prefix): New function.
(stap_is_register_prefix): Likewise.
(stap_is_register_indirection_prefix): Likewise.
(stap_is_integer_prefix): Likewise.
(stap_generic_check_suffix): Likewise.
(stap_check_integer_suffix): Likewise.
(stap_check_register_suffix): Likewise.
(stap_check_register_indirection_suffix): Likewise.
(stap_parse_register_operand): Remove unecessary declarations for
variables holding prefix and suffix information. Use the new
functions listed above for checking for prefixes and suffixes.
(stap_parse_single_operand): Likewise.
2013-12-20 04:53:40 +08:00
|
|
|
extern const char *const * gdbarch_stap_register_indirection_prefixes (struct gdbarch *gdbarch);
|
|
|
|
|
extern void set_gdbarch_stap_register_indirection_prefixes (struct gdbarch *gdbarch, const char *const * stap_register_indirection_prefixes);
|
2012-04-28 04:47:57 +08:00
|
|
|
|
Extend SystemTap SDT probe argument parser
This patch extends the current generic parser for SystemTap SDT probe
arguments. It can be almost considered a cleanup, but the main point of
it is actually to allow the generic parser to accept multiple prefixes
and suffixes for the its operands (i.e., integers, register names, and
register indirection).
I have chosen to implement this as a list of const strings, and declare
this list as "static" inside each target's method used to initialize
gdbarch.
This patch is actually a preparation for an upcoming patch for ARM,
which implements the support for multiple integer prefixes (as defined
by ARM's asm spec). And AArch64 will also need this, for the same
reason.
This patch was regtested on all architectures that it touches (i.e.,
i386, x86_64, ARM, PPC/PPC64, s390x and IA-64). No regressions were found.
2013-12-19 Sergio Durigan Junior <sergiodj@redhat.com>
* amd64-tdep.c (amd64_init_abi): Declare SystemTap SDT probe
argument prefixes and suffixes. Initialize gdbarch with them.
* arm-linux-tdep.c (arm_linux_init_abi): Likewise.
* gdbarch.c: Regenerate.
* gdbarch.h: Regenerate.
* gdbarch.sh (stap_integer_prefix, stap_integer_suffix)
(stap_register_prefix, stap_register_suffix)
(stap_register_indirection_prefix)
(stap_register_indirection_suffix): Declare as "const char *const
*" instead of "const char *". Adjust printing function. Rename
all of the variables to the plural.
(pstring_list): New function.
* i386-tdep.c (i386_elf_init_abi): Declare SystemTap SDT probe
argument prefixes and suffixes. Initialize gdbarch with them.
* ia64-linux-tdep.c (ia64_linux_init_abi): Likewise.
* ppc-linux-tdep.c (ppc_linux_init_abi): Likewise.
* s390-linux-tdep.c (s390_gdbarch_init): Likewise.
* stap-probe.c (stap_is_generic_prefix): New function.
(stap_is_register_prefix): Likewise.
(stap_is_register_indirection_prefix): Likewise.
(stap_is_integer_prefix): Likewise.
(stap_generic_check_suffix): Likewise.
(stap_check_integer_suffix): Likewise.
(stap_check_register_suffix): Likewise.
(stap_check_register_indirection_suffix): Likewise.
(stap_parse_register_operand): Remove unecessary declarations for
variables holding prefix and suffix information. Use the new
functions listed above for checking for prefixes and suffixes.
(stap_parse_single_operand): Likewise.
2013-12-20 04:53:40 +08:00
|
|
|
/* A NULL-terminated array of suffixes used to mark a register
|
|
|
|
|
indirection on the architecture's assembly.
|
2012-04-28 04:47:57 +08:00
|
|
|
For example, on x86 the register indirection is written as:
|
|
|
|
|
|
|
|
|
|
(%eax) ;; indirecting eax
|
|
|
|
|
|
|
|
|
|
in this case, this prefix would be the charater `)'.
|
|
|
|
|
|
|
|
|
|
Please note that we use the indirection suffix also for register
|
|
|
|
|
displacement, e.g., `4(%eax)' on x86. */
|
|
|
|
|
|
Extend SystemTap SDT probe argument parser
This patch extends the current generic parser for SystemTap SDT probe
arguments. It can be almost considered a cleanup, but the main point of
it is actually to allow the generic parser to accept multiple prefixes
and suffixes for the its operands (i.e., integers, register names, and
register indirection).
I have chosen to implement this as a list of const strings, and declare
this list as "static" inside each target's method used to initialize
gdbarch.
This patch is actually a preparation for an upcoming patch for ARM,
which implements the support for multiple integer prefixes (as defined
by ARM's asm spec). And AArch64 will also need this, for the same
reason.
This patch was regtested on all architectures that it touches (i.e.,
i386, x86_64, ARM, PPC/PPC64, s390x and IA-64). No regressions were found.
2013-12-19 Sergio Durigan Junior <sergiodj@redhat.com>
* amd64-tdep.c (amd64_init_abi): Declare SystemTap SDT probe
argument prefixes and suffixes. Initialize gdbarch with them.
* arm-linux-tdep.c (arm_linux_init_abi): Likewise.
* gdbarch.c: Regenerate.
* gdbarch.h: Regenerate.
* gdbarch.sh (stap_integer_prefix, stap_integer_suffix)
(stap_register_prefix, stap_register_suffix)
(stap_register_indirection_prefix)
(stap_register_indirection_suffix): Declare as "const char *const
*" instead of "const char *". Adjust printing function. Rename
all of the variables to the plural.
(pstring_list): New function.
* i386-tdep.c (i386_elf_init_abi): Declare SystemTap SDT probe
argument prefixes and suffixes. Initialize gdbarch with them.
* ia64-linux-tdep.c (ia64_linux_init_abi): Likewise.
* ppc-linux-tdep.c (ppc_linux_init_abi): Likewise.
* s390-linux-tdep.c (s390_gdbarch_init): Likewise.
* stap-probe.c (stap_is_generic_prefix): New function.
(stap_is_register_prefix): Likewise.
(stap_is_register_indirection_prefix): Likewise.
(stap_is_integer_prefix): Likewise.
(stap_generic_check_suffix): Likewise.
(stap_check_integer_suffix): Likewise.
(stap_check_register_suffix): Likewise.
(stap_check_register_indirection_suffix): Likewise.
(stap_parse_register_operand): Remove unecessary declarations for
variables holding prefix and suffix information. Use the new
functions listed above for checking for prefixes and suffixes.
(stap_parse_single_operand): Likewise.
2013-12-20 04:53:40 +08:00
|
|
|
extern const char *const * gdbarch_stap_register_indirection_suffixes (struct gdbarch *gdbarch);
|
|
|
|
|
extern void set_gdbarch_stap_register_indirection_suffixes (struct gdbarch *gdbarch, const char *const * stap_register_indirection_suffixes);
|
2012-04-28 04:47:57 +08:00
|
|
|
|
Extend SystemTap SDT probe argument parser
This patch extends the current generic parser for SystemTap SDT probe
arguments. It can be almost considered a cleanup, but the main point of
it is actually to allow the generic parser to accept multiple prefixes
and suffixes for the its operands (i.e., integers, register names, and
register indirection).
I have chosen to implement this as a list of const strings, and declare
this list as "static" inside each target's method used to initialize
gdbarch.
This patch is actually a preparation for an upcoming patch for ARM,
which implements the support for multiple integer prefixes (as defined
by ARM's asm spec). And AArch64 will also need this, for the same
reason.
This patch was regtested on all architectures that it touches (i.e.,
i386, x86_64, ARM, PPC/PPC64, s390x and IA-64). No regressions were found.
2013-12-19 Sergio Durigan Junior <sergiodj@redhat.com>
* amd64-tdep.c (amd64_init_abi): Declare SystemTap SDT probe
argument prefixes and suffixes. Initialize gdbarch with them.
* arm-linux-tdep.c (arm_linux_init_abi): Likewise.
* gdbarch.c: Regenerate.
* gdbarch.h: Regenerate.
* gdbarch.sh (stap_integer_prefix, stap_integer_suffix)
(stap_register_prefix, stap_register_suffix)
(stap_register_indirection_prefix)
(stap_register_indirection_suffix): Declare as "const char *const
*" instead of "const char *". Adjust printing function. Rename
all of the variables to the plural.
(pstring_list): New function.
* i386-tdep.c (i386_elf_init_abi): Declare SystemTap SDT probe
argument prefixes and suffixes. Initialize gdbarch with them.
* ia64-linux-tdep.c (ia64_linux_init_abi): Likewise.
* ppc-linux-tdep.c (ppc_linux_init_abi): Likewise.
* s390-linux-tdep.c (s390_gdbarch_init): Likewise.
* stap-probe.c (stap_is_generic_prefix): New function.
(stap_is_register_prefix): Likewise.
(stap_is_register_indirection_prefix): Likewise.
(stap_is_integer_prefix): Likewise.
(stap_generic_check_suffix): Likewise.
(stap_check_integer_suffix): Likewise.
(stap_check_register_suffix): Likewise.
(stap_check_register_indirection_suffix): Likewise.
(stap_parse_register_operand): Remove unecessary declarations for
variables holding prefix and suffix information. Use the new
functions listed above for checking for prefixes and suffixes.
(stap_parse_single_operand): Likewise.
2013-12-20 04:53:40 +08:00
|
|
|
/* Prefix(es) used to name a register using GDB's nomenclature.
|
2012-04-28 04:47:57 +08:00
|
|
|
|
|
|
|
|
For example, on PPC a register is represented by a number in the assembly
|
|
|
|
|
language (e.g., `10' is the 10th general-purpose register). However,
|
|
|
|
|
inside GDB this same register has an `r' appended to its name, so the 10th
|
|
|
|
|
register would be represented as `r10' internally. */
|
|
|
|
|
|
|
|
|
|
extern const char * gdbarch_stap_gdb_register_prefix (struct gdbarch *gdbarch);
|
|
|
|
|
extern void set_gdbarch_stap_gdb_register_prefix (struct gdbarch *gdbarch, const char * stap_gdb_register_prefix);
|
|
|
|
|
|
|
|
|
|
/* Suffix used to name a register using GDB's nomenclature. */
|
|
|
|
|
|
|
|
|
|
extern const char * gdbarch_stap_gdb_register_suffix (struct gdbarch *gdbarch);
|
|
|
|
|
extern void set_gdbarch_stap_gdb_register_suffix (struct gdbarch *gdbarch, const char * stap_gdb_register_suffix);
|
|
|
|
|
|
|
|
|
|
/* Check if S is a single operand.
|
|
|
|
|
|
|
|
|
|
Single operands can be:
|
|
|
|
|
- Literal integers, e.g. `$10' on x86
|
|
|
|
|
- Register access, e.g. `%eax' on x86
|
|
|
|
|
- Register indirection, e.g. `(%eax)' on x86
|
|
|
|
|
- Register displacement, e.g. `4(%eax)' on x86
|
|
|
|
|
|
|
|
|
|
This function should check for these patterns on the string
|
|
|
|
|
and return 1 if some were found, or zero otherwise. Please try to match
|
|
|
|
|
as much info as you can from the string, i.e., if you have to match
|
|
|
|
|
something like `(%', do not match just the `('. */
|
|
|
|
|
|
|
|
|
|
extern int gdbarch_stap_is_single_operand_p (struct gdbarch *gdbarch);
|
|
|
|
|
|
|
|
|
|
typedef int (gdbarch_stap_is_single_operand_ftype) (struct gdbarch *gdbarch, const char *s);
|
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extern int gdbarch_stap_is_single_operand (struct gdbarch *gdbarch, const char *s);
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extern void set_gdbarch_stap_is_single_operand (struct gdbarch *gdbarch, gdbarch_stap_is_single_operand_ftype *stap_is_single_operand);
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/* Function used to handle a "special case" in the parser.
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A "special case" is considered to be an unknown token, i.e., a token
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that the parser does not know how to parse. A good example of special
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case would be ARM's register displacement syntax:
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[R0, #4] ;; displacing R0 by 4
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Since the parser assumes that a register displacement is of the form:
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<number> <indirection_prefix> <register_name> <indirection_suffix>
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it means that it will not be able to recognize and parse this odd syntax.
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Therefore, we should add a special case function that will handle this token.
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This function should generate the proper expression form of the expression
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using GDB's internal expression mechanism (e.g., `write_exp_elt_opcode'
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and so on). It should also return 1 if the parsing was successful, or zero
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if the token was not recognized as a special token (in this case, returning
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zero means that the special parser is deferring the parsing to the generic
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parser), and should advance the buffer pointer (p->arg). */
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extern int gdbarch_stap_parse_special_token_p (struct gdbarch *gdbarch);
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typedef int (gdbarch_stap_parse_special_token_ftype) (struct gdbarch *gdbarch, struct stap_parse_info *p);
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extern int gdbarch_stap_parse_special_token (struct gdbarch *gdbarch, struct stap_parse_info *p);
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extern void set_gdbarch_stap_parse_special_token (struct gdbarch *gdbarch, gdbarch_stap_parse_special_token_ftype *stap_parse_special_token);
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2015-02-17 22:54:44 +08:00
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/* DTrace related functions.
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The expression to compute the NARTGth+1 argument to a DTrace USDT probe.
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NARG must be >= 0. */
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extern int gdbarch_dtrace_parse_probe_argument_p (struct gdbarch *gdbarch);
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typedef void (gdbarch_dtrace_parse_probe_argument_ftype) (struct gdbarch *gdbarch, struct parser_state *pstate, int narg);
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extern void gdbarch_dtrace_parse_probe_argument (struct gdbarch *gdbarch, struct parser_state *pstate, int narg);
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extern void set_gdbarch_dtrace_parse_probe_argument (struct gdbarch *gdbarch, gdbarch_dtrace_parse_probe_argument_ftype *dtrace_parse_probe_argument);
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/* True if the given ADDR does not contain the instruction sequence
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corresponding to a disabled DTrace is-enabled probe. */
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extern int gdbarch_dtrace_probe_is_enabled_p (struct gdbarch *gdbarch);
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typedef int (gdbarch_dtrace_probe_is_enabled_ftype) (struct gdbarch *gdbarch, CORE_ADDR addr);
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extern int gdbarch_dtrace_probe_is_enabled (struct gdbarch *gdbarch, CORE_ADDR addr);
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extern void set_gdbarch_dtrace_probe_is_enabled (struct gdbarch *gdbarch, gdbarch_dtrace_probe_is_enabled_ftype *dtrace_probe_is_enabled);
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/* Enable a DTrace is-enabled probe at ADDR. */
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extern int gdbarch_dtrace_enable_probe_p (struct gdbarch *gdbarch);
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typedef void (gdbarch_dtrace_enable_probe_ftype) (struct gdbarch *gdbarch, CORE_ADDR addr);
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extern void gdbarch_dtrace_enable_probe (struct gdbarch *gdbarch, CORE_ADDR addr);
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extern void set_gdbarch_dtrace_enable_probe (struct gdbarch *gdbarch, gdbarch_dtrace_enable_probe_ftype *dtrace_enable_probe);
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/* Disable a DTrace is-enabled probe at ADDR. */
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extern int gdbarch_dtrace_disable_probe_p (struct gdbarch *gdbarch);
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typedef void (gdbarch_dtrace_disable_probe_ftype) (struct gdbarch *gdbarch, CORE_ADDR addr);
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extern void gdbarch_dtrace_disable_probe (struct gdbarch *gdbarch, CORE_ADDR addr);
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extern void set_gdbarch_dtrace_disable_probe (struct gdbarch *gdbarch, gdbarch_dtrace_disable_probe_ftype *dtrace_disable_probe);
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* remote.c (remote_start_remote): If the solib list is global,
fetch libraries and insert breakpoints after connecting.
* infcmd.c (post_create_inferior): If the solist is shared between
inferiors, no need to refetch it on every new inferior.
(detach_command): If the shared library list is shared between
inferiors, then don't clear it on every inferior detach.
* gdbarch.sh (has_global_solist): New.
* i386-dicos-tdep.c (i386_dicos_init_abi): Set
gdbarch_has_global_solist.
* target.c (target_pre_inferior): If the shared library list is
shared between inferiors, then don't clear it here, neither
invalidate the memory regions or clear the target description.
(target_detach): If the shared library list is shared between
inferiors, then don't remove breakpoints from the target here.
(target_disconnect): Comment.
* solib.c (update_solib_list): Check for null_ptid.
* breakpoint.c (insert_breakpoints, update_global_location_list):
If the shared library list is shared between inferiors, insert
breakpoints even if there's no execution.
(breakpoint_init_inferior): If the shared library list is shared
between inferiors, don't delete breakpoints or mark them
uninserted here.
* gdbarch.c, gdbarch.h: Regenerate.
2008-11-03 22:01:27 +08:00
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/* True if the list of shared libraries is one and only for all
|
2008-11-04 00:11:45 +08:00
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processes, as opposed to a list of shared libraries per inferior.
|
2009-05-19 08:23:49 +08:00
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This usually means that all processes, although may or may not share
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|
an address space, will see the same set of symbols at the same
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addresses. */
|
* remote.c (remote_start_remote): If the solib list is global,
fetch libraries and insert breakpoints after connecting.
* infcmd.c (post_create_inferior): If the solist is shared between
inferiors, no need to refetch it on every new inferior.
(detach_command): If the shared library list is shared between
inferiors, then don't clear it on every inferior detach.
* gdbarch.sh (has_global_solist): New.
* i386-dicos-tdep.c (i386_dicos_init_abi): Set
gdbarch_has_global_solist.
* target.c (target_pre_inferior): If the shared library list is
shared between inferiors, then don't clear it here, neither
invalidate the memory regions or clear the target description.
(target_detach): If the shared library list is shared between
inferiors, then don't remove breakpoints from the target here.
(target_disconnect): Comment.
* solib.c (update_solib_list): Check for null_ptid.
* breakpoint.c (insert_breakpoints, update_global_location_list):
If the shared library list is shared between inferiors, insert
breakpoints even if there's no execution.
(breakpoint_init_inferior): If the shared library list is shared
between inferiors, don't delete breakpoints or mark them
uninserted here.
* gdbarch.c, gdbarch.h: Regenerate.
2008-11-03 22:01:27 +08:00
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extern int gdbarch_has_global_solist (struct gdbarch *gdbarch);
|
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|
extern void set_gdbarch_has_global_solist (struct gdbarch *gdbarch, int has_global_solist);
|
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|
2009-05-19 08:23:49 +08:00
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/* On some targets, even though each inferior has its own private
|
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|
address space, the debug interface takes care of making breakpoints
|
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|
visible to all address spaces automatically. For such cases,
|
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|
this property should be set to true. */
|
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|
|
extern int gdbarch_has_global_breakpoints (struct gdbarch *gdbarch);
|
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|
|
extern void set_gdbarch_has_global_breakpoints (struct gdbarch *gdbarch, int has_global_breakpoints);
|
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|
2009-10-19 Pedro Alves <pedro@codesourcery.com>
Stan Shebs <stan@codesourcery.com>
Add base multi-executable/process support to GDB.
gdb/
* Makefile.in (SFILES): Add progspace.c.
(COMMON_OBS): Add progspace.o.
* progspace.h: New.
* progspace.c: New.
* breakpoint.h (struct bp_target_info) <placed_address_space>: New
field.
(struct bp_location) <pspace>: New field.
(struct breakpoint) <pspace>: New field.
(bpstat_stop_status, breakpoint_here_p)
(moribund_breakpoint_here_p, breakpoint_inserted_here_p)
(regular_breakpoint_inserted_here_p)
(software_breakpoint_inserted_here_p, breakpoint_thread_match)
(set_default_breakpoint): Adjust prototypes.
(remove_breakpoints_pid, breakpoint_program_space_exit): Declare.
(insert_single_step_breakpoint, deprecated_insert_raw_breakpoint):
Adjust prototypes.
* breakpoint.c (executing_startup): Delete.
(default_breakpoint_sspace): New.
(breakpoint_restore_shadows): Skip if the address space doesn't
match.
(update_watchpoint): Record the frame's program space in the
breakpoint location.
(insert_bp_location): Record the address space in target_info.
Adjust to pass the symbol space to solib_name_from_address.
(breakpoint_program_space_exit): New.
(insert_breakpoint_locations): Switch the symbol space and thread
when inserting breakpoints. Don't insert breakpoints in a vfork
parent waiting for vfork done if we're not attached to the vfork
child.
(remove_breakpoints_pid): New.
(reattach_breakpoints): Switch to a thread of PID. Ignore
breakpoints of other symbol spaces.
(create_internal_breakpoint): Store the symbol space in the sal.
(create_longjmp_master_breakpoint): Iterate over all symbol
spaces.
(update_breakpoints_after_exec): Ignore breakpoints for other
symbol spaces.
(remove_breakpoint): Rename to ...
(remove_breakpoint_1): ... this. Pass the breakpoints symbol
space to solib_name_from_address.
(remove_breakpoint): New.
(mark_breakpoints_out): Ignore breakpoints from other symbol
spaces.
(breakpoint_init_inferior): Ditto.
(breakpoint_here_p): Add an address space argument and adjust to
use breakpoint_address_match.
(moribund_breakpoint_here_p): Ditto.
(regular_breakpoint_inserted_here_p): Ditto.
(breakpoint_inserted_here_p): Ditto.
(software_breakpoint_inserted_here_p): Ditto.
(breakpoint_thread_match): Ditto.
(bpstat_check_location): Ditto.
(bpstat_stop_status): Ditto.
(print_breakpoint_location): If there's a location to print,
switch the current symbol space.
(print_one_breakpoint_location): Add `allflag' argument.
(print_one_breakpoint): Ditto. Adjust.
(do_captured_breakpoint_query): Adjust.
(breakpoint_1): Adjust.
(breakpoint_has_pc): Also match the symbol space.
(describe_other_breakpoints): Add a symbol space argument and
adjust.
(set_default_breakpoint): Add a symbol space argument. Set
default_breakpoint_sspace.
(breakpoint_address_match): New.
(check_duplicates_for): Add an address space argument, and adjust.
(set_raw_breakpoint): Record the symbol space in the location and
in the breakpoint.
(set_longjmp_breakpoint): Skip longjmp master breakpoints from
other symbol spaces.
(remove_thread_event_breakpoints, remove_solib_event_breakpoints)
(disable_breakpoints_in_shlibs): Skip breakpoints from other
symbol spaces.
(disable_breakpoints_in_unloaded_shlib): Match symbol spaces.
(create_catchpoint): Set the symbol space in the sal.
(disable_breakpoints_before_startup): Skip breakpoints from other
symbol spaces. Set executing_startup in the current symbol space.
(enable_breakpoints_after_startup): Clear executing_startup in the
current symbol space. Skip breakpoints from other symbol spaces.
(clone_momentary_breakpoint): Also copy the symbol space.
(add_location_to_breakpoint): Set the location's symbol space.
(bp_loc_is_permanent): Switch thread and symbol space.
(create_breakpoint): Adjust.
(expand_line_sal_maybe): Expand comment to mention symbol spaces.
Switch thread and symbol space when reading memory.
(parse_breakpoint_sals): Set the symbol space in the sal.
(break_command_really): Ditto.
(skip_prologue_sal): Switch and space.
(resolve_sal_pc): Ditto.
(watch_command_1): Record the symbol space in the sal.
(create_ada_exception_breakpoint): Adjust.
(clear_command): Adjust. Match symbol spaces.
(update_global_location_list): Use breakpoint_address_match.
(breakpoint_re_set_one): Switch thread and space.
(breakpoint_re_set): Save symbol space.
(breakpoint_re_set_thread): Also reset the symbol space.
(deprecated_insert_raw_breakpoint): Add an address space argument.
Adjust.
(insert_single_step_breakpoint): Ditto.
(single_step_breakpoint_inserted_here_p): Ditto.
(clear_syscall_counts): New.
(_initialize_breakpoint): Install it as inferior_exit observer.
* exec.h: Include "progspace.h".
(exec_bfd, exec_bfd_mtime): New defines.
(exec_close): Declare.
* exec.c: Include "gdbthread.h" and "progspace.h".
(exec_bfd, exec_bfd_mtime, current_target_sections_1): Delete.
(using_exec_ops): New.
(exec_close_1): Rename to exec_close, and make public.
(exec_close): Rename to exec_close_1, and adjust all callers. Add
description. Remove target sections and close executables from
all program spaces.
(exec_file_attach): Add comment.
(add_target_sections): Check on `using_exec_ops' to check if the
target should be pushed.
(remove_target_sections): Only unpush the target if there are no
more target sections in any symbol space.
* gdbcore.h: Include "exec.h".
(exec_bfd, exec_bfd_mtime): Remove declarations.
* frame.h (get_frame_program_space, get_frame_address_space)
(frame_unwind_program_space): Declare.
* frame.c (struct frame_info) <pspace, aspace>: New fields.
(create_sentinel_frame): Add program space argument. Set the
pspace and aspace fields of the frame object.
(get_current_frame, create_new_frame): Adjust.
(get_frame_program_space): New.
(frame_unwind_program_space): New.
(get_frame_address_space): New.
* stack.c (print_frame_info): Adjust.
(print_frame): Use the frame's program space.
* gdbthread.h (any_live_thread_of_process): Declare.
* thread.c (any_live_thread_of_process): New.
(switch_to_thread): Switch the program space as well.
(restore_selected_frame): Don't warn if trying to restore frame
level 0.
* inferior.h: Include "progspace.h".
(detach_fork): Declare.
(struct inferior) <removable, aspace, pspace>
<vfork_parent, vfork_child, pending_detach>
<waiting_for_vfork_done>: New fields.
<terminal_info>: Remove field.
<data, num_data>: New fields.
(register_inferior_data, register_inferior_data_with_cleanup)
(clear_inferior_data, set_inferior_data, inferior_data): Declare.
(exit_inferior, exit_inferior_silent, exit_inferior_num_silent)
(inferior_appeared): Declare.
(find_inferior_pid): Typo.
(find_inferior_id, find_inferior_for_program_space): Declare.
(set_current_inferior, save_current_inferior, prune_inferiors)
(number_of_inferiors): Declare.
(inferior_list): Declare.
* inferior.c: Include "gdbcore.h" and "symfile.h".
(inferior_list): Make public.
(delete_inferior_1): Always delete thread silently.
(find_inferior_id): Make public.
(current_inferior_): New.
(current_inferior): Use it.
(set_current_inferior): New.
(restore_inferior): New.
(save_current_inferior): New.
(free_inferior): Free the per-inferior data.
(add_inferior_silent): Allocate per-inferior data.
Call inferior_appeared.
(delete_threads_of_inferior): New.
(delete_inferior_1): Adjust interface to take an inferior pointer.
(delete_inferior): Adjust.
(delete_inferior_silent): Adjust.
(exit_inferior_1): New.
(exit_inferior): New.
(exit_inferior_silent): New.
(exit_inferior_num_silent): New.
(detach_inferior): Adjust.
(inferior_appeared): New.
(discard_all_inferiors): Adjust.
(find_inferior_id): Make public. Assert pid is not zero.
(find_inferior_for_program_space): New.
(have_inferiors): Check if we have any inferior with pid not zero.
(have_live_inferiors): Go over all pushed targets looking for
process_stratum.
(prune_inferiors): New.
(number_of_inferiors): New.
(print_inferior): Add executable column. Print vfork parent/child
relationships.
(inferior_command): Adjust to cope with not running inferiors.
(remove_inferior_command): New.
(add_inferior_command): New.
(clone_inferior_command): New.
(struct inferior_data): New.
(struct inferior_data_registration): New.
(struct inferior_data_registry): New.
(inferior_data_registry): New.
(register_inferior_data_with_cleanup): New.
(register_inferior_data): New.
(inferior_alloc_data): New.
(inferior_free_data): New.
(clear_inferior_data): New.
(set_inferior_data): New.
(inferior_data): New.
(initialize_inferiors): New.
(_initialize_inferiors): Register "add-inferior",
"remove-inferior" and "clone-inferior" commands.
* objfiles.h: Include "progspace.h".
(struct objfile) <pspace>: New field.
(symfile_objfile, object_files): Don't declare.
(ALL_PSPACE_OBJFILES): New.
(ALL_PSPACE_OBJFILES_SAFE): New.
(ALL_OBJFILES, ALL_OBJFILES_SAFE): Adjust.
(ALL_PSPACE_SYMTABS): New.
(ALL_PRIMARY_SYMTABS): Adjust.
(ALL_PSPACE_PRIMARY_SYMTABS): New.
(ALL_PSYMTABS): Adjust.
(ALL_PSPACE_PSYMTABS): New.
* objfiles.c (object_files, symfile_objfile): Delete.
(struct objfile_sspace_info): New.
(objfiles_pspace_data): New.
(objfiles_pspace_data_cleanup): New.
(get_objfile_pspace_data): New.
(objfiles_changed_p): Delete.
(allocate_objfile): Set the objfile's program space. Adjust to
reference objfiles_changed_p in pspace data.
(free_objfile): Adjust to reference objfiles_changed_p in pspace
data.
(objfile_relocate): Ditto.
(update_section_map): Add pspace argument. Adjust to iterate over
objfiles in the passed in pspace.
(find_pc_section): Delete sections and num_sections statics.
Adjust to refer to program space's objfiles_changed_p. Adjust to
refer to sections and num_sections store in the objfile's pspace
data.
(objfiles_changed): Adjust to reference objfiles_changed_p in
pspace data.
(_initialize_objfiles): New.
* linespec.c (decode_all_digits, decode_dollar): Set the sal's
program space.
* source.c (current_source_pspace): New.
(get_current_source_symtab_and_line): Set the sal's program space.
(set_current_source_symtab_and_line): Set current_source_pspace.
(select_source_symtab): Ditto. Use ALL_OBJFILES.
(forget_cached_source_info): Iterate over all program spaces.
* symfile.c (clear_symtab_users): Adjust.
* symmisc.c (print_symbol_bcache_statistics): Iterate over all
program spaces.
(print_objfile_statistics): Ditto.
(maintenance_print_msymbols): Ditto.
(maintenance_print_objfiles): Ditto.
(maintenance_info_symtabs): Ditto.
(maintenance_info_psymtabs): Ditto.
* symtab.h (SYMTAB_PSPACE): New.
(struct symtab_and_line) <pspace>: New field.
* symtab.c (init_sal): Clear the sal's program space.
(find_pc_sect_symtab): Set the sal's program space. Switch thread
and space.
(append_expanded_sal): Add program space argument. Iterate over
all program spaces.
(expand_line_sal): Iterate over all program spaces. Switch
program space.
* target.h (enum target_waitkind) <TARGET_WAITKIND_VFORK_DONE>: New.
(struct target_ops) <to_thread_address_space>: New field.
(target_thread_address_space): Define.
* target.c (target_detach): Only remove breakpoints from the
inferior we're detaching.
(target_thread_address_space): New.
* defs.h (initialize_progspace): Declare.
* top.c (gdb_init): Call it.
* solist.h (struct so_list) <sspace>: New field.
* solib.h (struct program_space): Forward declare.
(solib_name_from_address): Adjust prototype.
* solib.c (so_list_head): Replace with a macro referencing the
program space.
(update_solib_list): Set the so's program space.
(solib_name_from_address): Add a program space argument and adjust.
* solib-svr4.c (struct svr4_info) <pid>: Delete field.
<interp_text_sect_low, interp_text_sect_high, interp_plt_sect_low>
<interp_plt_sect_high>: New fields.
(svr4_info_p, svr4_info): Delete.
(solib_svr4_sspace_data): New.
(get_svr4_info): Rewrite.
(svr4_sspace_data_cleanup): New.
(open_symbol_file_object): Adjust.
(svr4_default_sos): Adjust.
(svr4_fetch_objfile_link_map): Adjust.
(interp_text_sect_low, interp_text_sect_high, interp_plt_sect_low)
(interp_plt_sect_high): Delete.
(svr4_in_dynsym_resolve_code): Adjust.
(enable_break): Adjust.
(svr4_clear_solib): Revert bit that removed the svr4_info here,
and reinstate clearing debug_base, debug_loader_offset_p,
debug_loader_offset and debug_loader_name.
(_initialize_svr4_solib): Register solib_svr4_pspace_data. Don't
install an inferior_exit observer anymore.
* printcmd.c (struct display) <pspace>: New field.
(display_command): Set the display's sspace.
(do_one_display): Match the display's sspace.
(display_uses_solib_p): Ditto.
* linux-fork.c (detach_fork): Moved to infrun.c.
(_initialize_linux_fork): Moved "detach-on-fork" command to
infrun.c.
* infrun.c (detach_fork): Moved from linux-fork.c.
(proceed_after_vfork_done): New.
(handle_vfork_child_exec_or_exit): New.
(follow_exec_mode_replace, follow_exec_mode_keep)
(follow_exec_mode_names, follow_exec_mode_string)
(show_follow_exec_mode_string): New.
(follow_exec): New. Reinstate the mark_breakpoints_out call.
Remove shared libraries before attaching new executable. If user
wants to keep the inferior, keep it.
(displaced_step_fixup): Adjust to pass an address space to the
breakpoints module.
(resume): Ditto.
(clear_proceed_status): In all-stop mode, always clear the proceed
status of all threads.
(prepare_to_proceed): Adjust to pass an address space to the
breakpoints module.
(proceed): Ditto.
(adjust_pc_after_break): Ditto.
(handle_inferior_event): When handling a process exit, switch the
program space to the inferior's that had exited. Call
handle_vfork_child_exec_or_exit. Adjust to pass an address space
to the breakpoints module. In non-stop mode, when following a
fork and detach-fork is off, also resume the other branch. Handle
TARGET_WAITKIND_VFORK_DONE. Set the program space in sals.
(normal_stop): Prune inferiors.
(_initialize_infrun): Install the new "follow-exec-mode" command.
"detach-on-fork" moved here.
* regcache.h (get_regcache_aspace): Declare.
* regcache.c (struct regcache) <aspace>: New field.
(regcache_xmalloc): Clear the aspace.
(get_regcache_aspace): New.
(regcache_cpy): Copy the aspace field.
(regcache_cpy_no_passthrough): Ditto.
(get_thread_regcache): Fetch the thread's address space from the
target, and store it in the regcache.
* infcall.c (call_function_by_hand): Set the sal's pspace.
* arch-utils.c (default_has_shared_address_space): New.
* arch-utils.h (default_has_shared_address_space): Declare.
* gdbarch.sh (has_shared_address_space): New.
* gdbarch.h, gdbarch.c: Regenerate.
* linux-tdep.c: Include auxv.h, target.h, elf/common.h.
(linux_has_shared_address_space): New.
(_initialize_linux_tdep): Declare.
* arm-tdep.c (arm_software_single_step): Pass the frame's address
space to insert_single_step_breakpoint.
* arm-linux-tdep.c (arm_linux_software_single_step): Pass the
frame's pspace to breakpoint functions.
* cris-tdep.c (crisv32_single_step_through_delay): Ditto.
(cris_software_single_step): Ditto.
* mips-tdep.c (deal_with_atomic_sequence): Add frame argument.
Pass the frame's pspace to breakpoint functions.
(mips_software_single_step): Adjust.
(mips_single_step_through_delay): Adjust.
* rs6000-aix-tdep.c (rs6000_software_single_step): Adjust.
* rs6000-tdep.c (ppc_deal_with_atomic_sequence): Adjust.
* solib-irix.c (enable_break): Adjust to pass the current frame's
address space to breakpoint functions.
* sparc-tdep.c (sparc_software_single_step): Ditto.
* spu-tdep.c (spu_software_single_step): Ditto.
* alpha-tdep.c (alpha_software_single_step): Ditto.
* record.c (record_wait): Adjust to pass an address space to the
breakpoints module.
* fork-child.c (fork_inferior): Set the new inferior's program and
address spaces.
* inf-ptrace.c (inf_ptrace_follow_fork): Copy the parent's program
and address spaces.
(inf_ptrace_attach): Set the inferior's program and address spaces.
* linux-nat.c: Include "solib.h".
(linux_child_follow_fork): Manage parent and child's program and
address spaces. Clone the parent's program space if necessary.
Don't wait for the vfork to be done here. Refuse to resume if
following the vfork parent while leaving the child stopped.
(resume_callback): Don't resume a vfork parent.
(linux_nat_resume): Also check for pending events in the
lp->waitstatus field.
(linux_handle_extended_wait): Report TARGET_WAITKIND_VFORK_DONE
events to the core.
(stop_wait_callback): Don't wait for SIGSTOP on vfork parents.
(cancel_breakpoint): Adjust.
* linux-thread-db.c (thread_db_wait): Don't remove thread event
breakpoints here.
(thread_db_mourn_inferior): Don't mark breakpoints out here.
Remove thread event breakpoints after mourning.
* corelow.c: Include progspace.h.
(core_open): Set the inferior's program and address spaces.
* remote.c (remote_add_inferior): Set the new inferior's program
and address spaces.
(remote_start_remote): Update address spaces.
(extended_remote_create_inferior_1): Don't init the thread list if
we already debugging other inferiors.
* darwin-nat.c (darwin_attach): Set the new inferior's program and
address spaces.
* gnu-nat.c (gnu_attach): Ditto.
* go32-nat.c (go32_create_inferior): Ditto.
* inf-ttrace.c (inf_ttrace_follow_fork, inf_ttrace_attach): Ditto.
* monitor.c (monitor_open): Ditto.
* nto-procfs.c (procfs_attach, procfs_create_inferior): Ditto.
* procfs.c (do_attach): Ditto.
* windows-nat.c (do_initial_windows_stuff): Ditto.
* inflow.c (inferior_process_group)
(terminal_init_inferior_with_pgrp, terminal_inferior,
(terminal_ours_1, inflow_inferior_exit, copy_terminal_info)
(child_terminal_info, new_tty_postfork, set_sigint_trap): Adjust
to use per-inferior data instead of inferior->terminal_info.
(inflow_inferior_data): New.
(inflow_new_inferior): Delete.
(inflow_inferior_data_cleanup): New.
(get_inflow_inferior_data): New.
* mi/mi-interp.c (mi_new_inferior): Rename to...
(mi_inferior_appeared): ... this.
(mi_interpreter_init): Adjust.
* tui/tui-disasm.c: Include "progspace.h".
(tui_set_disassem_content): Pass an address space to
breakpoint_here_p.
* NEWS: Mention multi-program debugging support. Mention new
commands "add-inferior", "clone-inferior", "remove-inferior",
"maint info program-spaces", and new option "set
follow-exec-mode".
2009-10-19 Pedro Alves <pedro@codesourcery.com>
Stan Shebs <stan@codesourcery.com>
gdb/doc/
* observer.texi (new_inferior): Rename to...
(inferior_appeared): ... this.
2009-10-19 Pedro Alves <pedro@codesourcery.com>
Stan Shebs <stan@codesourcery.com>
gdb/testsuite/
* gdb.base/foll-vfork.exp: Adjust to spell out "follow-fork".
* gdb.base/foll-exec.exp: Adjust to expect a process id before
"Executing new program".
* gdb.base/foll-fork.exp: Adjust to spell out "follow-fork".
* gdb.base/multi-forks.exp: Ditto. Adjust to the inferior being
left listed after having been killed.
* gdb.base/attach.exp: Adjust to spell out "symbol-file".
* gdb.base/maint.exp: Adjust test.
* Makefile.in (ALL_SUBDIRS): Add gdb.multi.
* gdb.multi/Makefile.in: New.
* gdb.multi/base.exp: New.
* gdb.multi/goodbye.c: New.
* gdb.multi/hangout.c: New.
* gdb.multi/hello.c: New.
* gdb.multi/bkpt-multi-exec.c: New.
* gdb.multi/bkpt-multi-exec.exp: New.
* gdb.multi/crashme.c: New.
2009-10-19 Pedro Alves <pedro@codesourcery.com>
Stan Shebs <stan@codesourcery.com>
gdb/doc/
* gdb.texinfo (Inferiors): Rename node to ...
(Inferiors and Programs): ... this. Mention running multiple
programs in the same debug session.
<info inferiors>: Mention the new 'Executable' column if "info
inferiors". Update examples. Document the "add-inferior",
"clone-inferior", "remove-inferior" and "maint info
program-spaces" commands.
(Process): Rename node to...
(Forks): ... this. Document "set|show follow-exec-mode".
2009-10-19 17:51:43 +08:00
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/* True if inferiors share an address space (e.g., uClinux). */
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typedef int (gdbarch_has_shared_address_space_ftype) (struct gdbarch *gdbarch);
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extern int gdbarch_has_shared_address_space (struct gdbarch *gdbarch);
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extern void set_gdbarch_has_shared_address_space (struct gdbarch *gdbarch, gdbarch_has_shared_address_space_ftype *has_shared_address_space);
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2010-01-06 12:20:27 +08:00
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/* True if a fast tracepoint can be set at an address. */
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2015-07-31 01:05:00 +08:00
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typedef int (gdbarch_fast_tracepoint_valid_at_ftype) (struct gdbarch *gdbarch, CORE_ADDR addr, char **msg);
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extern int gdbarch_fast_tracepoint_valid_at (struct gdbarch *gdbarch, CORE_ADDR addr, char **msg);
|
2010-01-06 12:20:27 +08:00
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extern void set_gdbarch_fast_tracepoint_valid_at (struct gdbarch *gdbarch, gdbarch_fast_tracepoint_valid_at_ftype *fast_tracepoint_valid_at);
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2016-02-18 16:21:38 +08:00
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/* Guess register state based on tracepoint location. Used for tracepoints
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where no registers have been collected, but there's only one location,
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allowing us to guess the PC value, and perhaps some other registers.
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On entry, regcache has all registers marked as unavailable. */
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typedef void (gdbarch_guess_tracepoint_registers_ftype) (struct gdbarch *gdbarch, struct regcache *regcache, CORE_ADDR addr);
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extern void gdbarch_guess_tracepoint_registers (struct gdbarch *gdbarch, struct regcache *regcache, CORE_ADDR addr);
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extern void set_gdbarch_guess_tracepoint_registers (struct gdbarch *gdbarch, gdbarch_guess_tracepoint_registers_ftype *guess_tracepoint_registers);
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2010-03-06 04:18:19 +08:00
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/* Return the "auto" target charset. */
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typedef const char * (gdbarch_auto_charset_ftype) (void);
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extern const char * gdbarch_auto_charset (struct gdbarch *gdbarch);
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extern void set_gdbarch_auto_charset (struct gdbarch *gdbarch, gdbarch_auto_charset_ftype *auto_charset);
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/* Return the "auto" target wide charset. */
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typedef const char * (gdbarch_auto_wide_charset_ftype) (void);
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extern const char * gdbarch_auto_wide_charset (struct gdbarch *gdbarch);
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extern void set_gdbarch_auto_wide_charset (struct gdbarch *gdbarch, gdbarch_auto_wide_charset_ftype *auto_wide_charset);
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2010-03-09 03:28:27 +08:00
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/* If non-empty, this is a file extension that will be opened in place
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of the file extension reported by the shared library list.
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This is most useful for toolchains that use a post-linker tool,
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where the names of the files run on the target differ in extension
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compared to the names of the files GDB should load for debug info. */
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extern const char * gdbarch_solib_symbols_extension (struct gdbarch *gdbarch);
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extern void set_gdbarch_solib_symbols_extension (struct gdbarch *gdbarch, const char * solib_symbols_extension);
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2010-05-05 17:20:20 +08:00
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/* If true, the target OS has DOS-based file system semantics. That
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is, absolute paths include a drive name, and the backslash is
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considered a directory separator. */
|
2010-04-24 21:12:56 +08:00
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extern int gdbarch_has_dos_based_file_system (struct gdbarch *gdbarch);
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extern void set_gdbarch_has_dos_based_file_system (struct gdbarch *gdbarch, int has_dos_based_file_system);
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2011-09-27 21:09:37 +08:00
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/* Generate bytecodes to collect the return address in a frame.
|
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|
Since the bytecodes run on the target, possibly with GDB not even
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connected, the full unwinding machinery is not available, and
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typically this function will issue bytecodes for one or more likely
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places that the return address may be found. */
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typedef void (gdbarch_gen_return_address_ftype) (struct gdbarch *gdbarch, struct agent_expr *ax, struct axs_value *value, CORE_ADDR scope);
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extern void gdbarch_gen_return_address (struct gdbarch *gdbarch, struct agent_expr *ax, struct axs_value *value, CORE_ADDR scope);
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extern void set_gdbarch_gen_return_address (struct gdbarch *gdbarch, gdbarch_gen_return_address_ftype *gen_return_address);
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2012-01-20 17:49:58 +08:00
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/* Implement the "info proc" command. */
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extern int gdbarch_info_proc_p (struct gdbarch *gdbarch);
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2014-06-07 03:38:16 +08:00
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typedef void (gdbarch_info_proc_ftype) (struct gdbarch *gdbarch, const char *args, enum info_proc_what what);
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extern void gdbarch_info_proc (struct gdbarch *gdbarch, const char *args, enum info_proc_what what);
|
2012-01-20 17:49:58 +08:00
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extern void set_gdbarch_info_proc (struct gdbarch *gdbarch, gdbarch_info_proc_ftype *info_proc);
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2012-12-14 23:30:38 +08:00
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/* Implement the "info proc" command for core files. Noe that there
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are two "info_proc"-like methods on gdbarch -- one for core files,
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one for live targets. */
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extern int gdbarch_core_info_proc_p (struct gdbarch *gdbarch);
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2014-06-07 03:38:16 +08:00
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typedef void (gdbarch_core_info_proc_ftype) (struct gdbarch *gdbarch, const char *args, enum info_proc_what what);
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extern void gdbarch_core_info_proc (struct gdbarch *gdbarch, const char *args, enum info_proc_what what);
|
2012-12-14 23:30:38 +08:00
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extern void set_gdbarch_core_info_proc (struct gdbarch *gdbarch, gdbarch_core_info_proc_ftype *core_info_proc);
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2012-06-05 21:50:50 +08:00
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/* Iterate over all objfiles in the order that makes the most sense
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for the architecture to make global symbol searches.
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CB is a callback function where OBJFILE is the objfile to be searched,
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and CB_DATA a pointer to user-defined data (the same data that is passed
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when calling this gdbarch method). The iteration stops if this function
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returns nonzero.
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CB_DATA is a pointer to some user-defined data to be passed to
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the callback.
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If not NULL, CURRENT_OBJFILE corresponds to the objfile being
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inspected when the symbol search was requested. */
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typedef void (gdbarch_iterate_over_objfiles_in_search_order_ftype) (struct gdbarch *gdbarch, iterate_over_objfiles_in_search_order_cb_ftype *cb, void *cb_data, struct objfile *current_objfile);
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extern void gdbarch_iterate_over_objfiles_in_search_order (struct gdbarch *gdbarch, iterate_over_objfiles_in_search_order_cb_ftype *cb, void *cb_data, struct objfile *current_objfile);
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extern void set_gdbarch_iterate_over_objfiles_in_search_order (struct gdbarch *gdbarch, gdbarch_iterate_over_objfiles_in_search_order_ftype *iterate_over_objfiles_in_search_order);
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2012-12-15 22:27:56 +08:00
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/* Ravenscar arch-dependent ops. */
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extern struct ravenscar_arch_ops * gdbarch_ravenscar_ops (struct gdbarch *gdbarch);
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extern void set_gdbarch_ravenscar_ops (struct gdbarch *gdbarch, struct ravenscar_arch_ops * ravenscar_ops);
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gdbarch: add instruction predicate methods
Add new methods to gdbarch for analyzing the instruction at a given address.
Implement those methods for i386 and amd64 architectures.
This is needed by "record btrace" to detect function calls in the
execution trace.
2014-01-16 Markus Metzger <markus.t.metzger@intel.com>
* amd64-tdep.c (amd64_classify_insn_at, amd64_insn_is_call)
(amd64_insn_is_ret, amd64_insn_is_jump, amd64_jmp_p): New.
(amd64_init_abi): Add insn_is_call, insn_is_ret, and insn_is_jump
to gdbarch.
* i386-tdep.c (i386_insn_is_call, i386_insn_is_ret)
(i386_insn_is_jump, i386_jmp_p): New.
(i386_gdbarch_init): Add insn_is_call, insn_is_ret, and
insn_is_jump to gdbarch.
* gdbarch.sh (insn_is_call, insn_is_ret, insn_is_jump): New.
* gdbarch.h: Regenerated.
* gdbarch.c: Regenerated.
* arch-utils.h (default_insn_is_call, default_insn_is_ret)
(default_insn_is_jump): New.
* arch-utils.c (default_insn_is_call, default_insn_is_ret)
(default_insn_is_jump): New.
2013-03-22 22:56:56 +08:00
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|
/* Return non-zero if the instruction at ADDR is a call; zero otherwise. */
|
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typedef int (gdbarch_insn_is_call_ftype) (struct gdbarch *gdbarch, CORE_ADDR addr);
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extern int gdbarch_insn_is_call (struct gdbarch *gdbarch, CORE_ADDR addr);
|
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extern void set_gdbarch_insn_is_call (struct gdbarch *gdbarch, gdbarch_insn_is_call_ftype *insn_is_call);
|
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|
/* Return non-zero if the instruction at ADDR is a return; zero otherwise. */
|
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typedef int (gdbarch_insn_is_ret_ftype) (struct gdbarch *gdbarch, CORE_ADDR addr);
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extern int gdbarch_insn_is_ret (struct gdbarch *gdbarch, CORE_ADDR addr);
|
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extern void set_gdbarch_insn_is_ret (struct gdbarch *gdbarch, gdbarch_insn_is_ret_ftype *insn_is_ret);
|
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|
/* Return non-zero if the instruction at ADDR is a jump; zero otherwise. */
|
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|
|
typedef int (gdbarch_insn_is_jump_ftype) (struct gdbarch *gdbarch, CORE_ADDR addr);
|
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|
|
extern int gdbarch_insn_is_jump (struct gdbarch *gdbarch, CORE_ADDR addr);
|
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|
extern void set_gdbarch_insn_is_jump (struct gdbarch *gdbarch, gdbarch_insn_is_jump_ftype *insn_is_jump);
|
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|
2014-02-27 20:40:15 +08:00
|
|
|
/* Read one auxv entry from *READPTR, not reading locations >= ENDPTR.
|
|
|
|
|
Return 0 if *READPTR is already at the end of the buffer.
|
|
|
|
|
Return -1 if there is insufficient buffer for a whole entry.
|
|
|
|
|
Return 1 if an entry was read into *TYPEP and *VALP. */
|
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|
|
|
|
|
|
|
extern int gdbarch_auxv_parse_p (struct gdbarch *gdbarch);
|
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|
|
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|
|
|
|
typedef int (gdbarch_auxv_parse_ftype) (struct gdbarch *gdbarch, gdb_byte **readptr, gdb_byte *endptr, CORE_ADDR *typep, CORE_ADDR *valp);
|
|
|
|
|
extern int gdbarch_auxv_parse (struct gdbarch *gdbarch, gdb_byte **readptr, gdb_byte *endptr, CORE_ADDR *typep, CORE_ADDR *valp);
|
|
|
|
|
extern void set_gdbarch_auxv_parse (struct gdbarch *gdbarch, gdbarch_auxv_parse_ftype *auxv_parse);
|
|
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|
|
|
2016-06-12 06:51:38 +08:00
|
|
|
/* Print the description of a single auxv entry described by TYPE and VAL
|
|
|
|
|
to FILE. */
|
|
|
|
|
|
|
|
|
|
typedef void (gdbarch_print_auxv_entry_ftype) (struct gdbarch *gdbarch, struct ui_file *file, CORE_ADDR type, CORE_ADDR val);
|
|
|
|
|
extern void gdbarch_print_auxv_entry (struct gdbarch *gdbarch, struct ui_file *file, CORE_ADDR type, CORE_ADDR val);
|
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|
|
extern void set_gdbarch_print_auxv_entry (struct gdbarch *gdbarch, gdbarch_print_auxv_entry_ftype *print_auxv_entry);
|
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|
|
|
2014-10-10 22:57:13 +08:00
|
|
|
/* Find the address range of the current inferior's vsyscall/vDSO, and
|
|
|
|
|
write it to *RANGE. If the vsyscall's length can't be determined, a
|
|
|
|
|
range with zero length is returned. Returns true if the vsyscall is
|
|
|
|
|
found, false otherwise. */
|
|
|
|
|
|
|
|
|
|
typedef int (gdbarch_vsyscall_range_ftype) (struct gdbarch *gdbarch, struct mem_range *range);
|
|
|
|
|
extern int gdbarch_vsyscall_range (struct gdbarch *gdbarch, struct mem_range *range);
|
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|
|
|
extern void set_gdbarch_vsyscall_range (struct gdbarch *gdbarch, gdbarch_vsyscall_range_ftype *vsyscall_range);
|
|
|
|
|
|
2014-05-15 04:08:57 +08:00
|
|
|
/* Allocate SIZE bytes of PROT protected page aligned memory in inferior.
|
|
|
|
|
PROT has GDB_MMAP_PROT_* bitmask format.
|
|
|
|
|
Throw an error if it is not possible. Returned address is always valid. */
|
|
|
|
|
|
|
|
|
|
typedef CORE_ADDR (gdbarch_infcall_mmap_ftype) (CORE_ADDR size, unsigned prot);
|
|
|
|
|
extern CORE_ADDR gdbarch_infcall_mmap (struct gdbarch *gdbarch, CORE_ADDR size, unsigned prot);
|
|
|
|
|
extern void set_gdbarch_infcall_mmap (struct gdbarch *gdbarch, gdbarch_infcall_mmap_ftype *infcall_mmap);
|
|
|
|
|
|
2015-06-04 03:22:56 +08:00
|
|
|
/* Deallocate SIZE bytes of memory at ADDR in inferior from gdbarch_infcall_mmap.
|
|
|
|
|
Print a warning if it is not possible. */
|
|
|
|
|
|
|
|
|
|
typedef void (gdbarch_infcall_munmap_ftype) (CORE_ADDR addr, CORE_ADDR size);
|
|
|
|
|
extern void gdbarch_infcall_munmap (struct gdbarch *gdbarch, CORE_ADDR addr, CORE_ADDR size);
|
|
|
|
|
extern void set_gdbarch_infcall_munmap (struct gdbarch *gdbarch, gdbarch_infcall_munmap_ftype *infcall_munmap);
|
|
|
|
|
|
2014-05-15 04:08:57 +08:00
|
|
|
/* Return string (caller has to use xfree for it) with options for GCC
|
|
|
|
|
to produce code for this target, typically "-m64", "-m32" or "-m31".
|
|
|
|
|
These options are put before CU's DW_AT_producer compilation options so that
|
|
|
|
|
they can override it. Method may also return NULL. */
|
|
|
|
|
|
|
|
|
|
typedef char * (gdbarch_gcc_target_options_ftype) (struct gdbarch *gdbarch);
|
|
|
|
|
extern char * gdbarch_gcc_target_options (struct gdbarch *gdbarch);
|
|
|
|
|
extern void set_gdbarch_gcc_target_options (struct gdbarch *gdbarch, gdbarch_gcc_target_options_ftype *gcc_target_options);
|
|
|
|
|
|
add gnu_triplet_regexp gdbarch method
gdb has to inform libcc1.so of the target being used, so that the
correct compiler can be invoked. The compiler is invoked using the
GNU configury triplet prefix, e.g., "x86_64-unknown-linux-gnu-gcc".
In order for this to work we need to map the gdbarch to the GNU
configury triplet arch. In most cases these are identical; however,
the x86 family poses some problems, as the BFD arch names are quite
different from the GNU triplet names. So, we introduce a new gdbarch
method for this. A regular expression is used because there are
various valid values for the arch prefix in the triplet.
This patch also updates the osabi code to associate a regular
expression with the OS ABI. I have only added a concrete value for
Linux. Note that the "-gnu" part is optional, at least on Fedora it
is omitted from the installed GCC executable's name.
gdb/ChangeLog
2014-12-12 Tom Tromey <tromey@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
* osabi.h (osabi_triplet_regexp): Declare.
* osabi.c (struct osabi_names): New.
(gdb_osabi_names): Change type to struct osabi_names. Update
values.
(gdbarch_osabi_name): Update.
(osabi_triplet_regexp): New function.
(osabi_from_tdesc_string, _initialize_gdb_osabi): Update.
* i386-tdep.c (i386_gnu_triplet_regexp): New method.
(i386_elf_init_abi, i386_go32_init_abi, i386_gdbarch_init): Call
set_gdbarch_gnu_triplet_regexp.
* gdbarch.sh (gnu_triplet_regexp): New method.
* gdbarch.c, gdbarch.h: Rebuild.
* arch-utils.h (default_gnu_triplet_regexp): Declare.
* arch-utils.c (default_gnu_triplet_regexp): New function.
2014-06-13 23:28:24 +08:00
|
|
|
/* Return a regular expression that matches names used by this
|
|
|
|
|
architecture in GNU configury triplets. The result is statically
|
|
|
|
|
allocated and must not be freed. The default implementation simply
|
|
|
|
|
returns the BFD architecture name, which is correct in nearly every
|
|
|
|
|
case. */
|
|
|
|
|
|
|
|
|
|
typedef const char * (gdbarch_gnu_triplet_regexp_ftype) (struct gdbarch *gdbarch);
|
|
|
|
|
extern const char * gdbarch_gnu_triplet_regexp (struct gdbarch *gdbarch);
|
|
|
|
|
extern void set_gdbarch_gnu_triplet_regexp (struct gdbarch *gdbarch, gdbarch_gnu_triplet_regexp_ftype *gnu_triplet_regexp);
|
|
|
|
|
|
2015-06-13 04:51:51 +08:00
|
|
|
/* Return the size in 8-bit bytes of an addressable memory unit on this
|
|
|
|
|
architecture. This corresponds to the number of 8-bit bytes associated to
|
|
|
|
|
each address in memory. */
|
|
|
|
|
|
|
|
|
|
typedef int (gdbarch_addressable_memory_unit_size_ftype) (struct gdbarch *gdbarch);
|
|
|
|
|
extern int gdbarch_addressable_memory_unit_size (struct gdbarch *gdbarch);
|
|
|
|
|
extern void set_gdbarch_addressable_memory_unit_size (struct gdbarch *gdbarch, gdbarch_addressable_memory_unit_size_ftype *addressable_memory_unit_size);
|
|
|
|
|
|
2009-09-15 11:30:08 +08:00
|
|
|
/* Definition for an unknown syscall, used basically in error-cases. */
|
|
|
|
|
#define UNKNOWN_SYSCALL (-1)
|
|
|
|
|
|
1999-08-31 09:14:27 +08:00
|
|
|
extern struct gdbarch_tdep *gdbarch_tdep (struct gdbarch *gdbarch);
|
1999-06-15 02:08:47 +08:00
|
|
|
|
|
|
|
|
|
|
|
|
|
/* Mechanism for co-ordinating the selection of a specific
|
|
|
|
|
architecture.
|
|
|
|
|
|
|
|
|
|
GDB targets (*-tdep.c) can register an interest in a specific
|
|
|
|
|
architecture. Other GDB components can register a need to maintain
|
|
|
|
|
per-architecture data.
|
|
|
|
|
|
|
|
|
|
The mechanisms below ensures that there is only a loose connection
|
|
|
|
|
between the set-architecture command and the various GDB
|
2000-09-02 08:01:33 +08:00
|
|
|
components. Each component can independently register their need
|
1999-06-15 02:08:47 +08:00
|
|
|
to maintain architecture specific data with gdbarch.
|
|
|
|
|
|
|
|
|
|
Pragmatics:
|
|
|
|
|
|
|
|
|
|
Previously, a single TARGET_ARCHITECTURE_HOOK was provided. It
|
|
|
|
|
didn't scale.
|
|
|
|
|
|
|
|
|
|
The more traditional mega-struct containing architecture specific
|
|
|
|
|
data for all the various GDB components was also considered. Since
|
2000-09-02 08:01:33 +08:00
|
|
|
GDB is built from a variable number of (fairly independent)
|
1999-06-15 02:08:47 +08:00
|
|
|
components it was determined that the global aproach was not
|
2011-01-08 03:36:19 +08:00
|
|
|
applicable. */
|
1999-06-15 02:08:47 +08:00
|
|
|
|
|
|
|
|
|
|
|
|
|
/* Register a new architectural family with GDB.
|
|
|
|
|
|
|
|
|
|
Register support for the specified ARCHITECTURE with GDB. When
|
|
|
|
|
gdbarch determines that the specified architecture has been
|
|
|
|
|
selected, the corresponding INIT function is called.
|
|
|
|
|
|
|
|
|
|
--
|
|
|
|
|
|
|
|
|
|
The INIT function takes two parameters: INFO which contains the
|
|
|
|
|
information available to gdbarch about the (possibly new)
|
|
|
|
|
architecture; ARCHES which is a list of the previously created
|
|
|
|
|
``struct gdbarch'' for this architecture.
|
|
|
|
|
|
2002-04-21 01:41:18 +08:00
|
|
|
The INFO parameter is, as far as possible, be pre-initialized with
|
2006-11-11 03:20:37 +08:00
|
|
|
information obtained from INFO.ABFD or the global defaults.
|
2002-04-21 01:41:18 +08:00
|
|
|
|
|
|
|
|
The ARCHES parameter is a linked list (sorted most recently used)
|
|
|
|
|
of all the previously created architures for this architecture
|
|
|
|
|
family. The (possibly NULL) ARCHES->gdbarch can used to access
|
|
|
|
|
values from the previously selected architecture for this
|
2009-07-03 01:29:17 +08:00
|
|
|
architecture family.
|
1999-06-15 02:08:47 +08:00
|
|
|
|
|
|
|
|
The INIT function shall return any of: NULL - indicating that it
|
2000-10-28 03:17:57 +08:00
|
|
|
doesn't recognize the selected architecture; an existing ``struct
|
1999-06-15 02:08:47 +08:00
|
|
|
gdbarch'' from the ARCHES list - indicating that the new
|
|
|
|
|
architecture is just a synonym for an earlier architecture (see
|
|
|
|
|
gdbarch_list_lookup_by_info()); a newly created ``struct gdbarch''
|
2000-06-10 13:37:47 +08:00
|
|
|
- that describes the selected architecture (see gdbarch_alloc()).
|
|
|
|
|
|
|
|
|
|
The DUMP_TDEP function shall print out all target specific values.
|
|
|
|
|
Care should be taken to ensure that the function works in both the
|
2011-01-08 03:36:19 +08:00
|
|
|
multi-arch and non- multi-arch cases. */
|
1999-06-15 02:08:47 +08:00
|
|
|
|
1999-07-20 07:30:11 +08:00
|
|
|
struct gdbarch_list
|
|
|
|
|
{
|
|
|
|
|
struct gdbarch *gdbarch;
|
|
|
|
|
struct gdbarch_list *next;
|
|
|
|
|
};
|
1999-06-15 02:08:47 +08:00
|
|
|
|
1999-07-20 07:30:11 +08:00
|
|
|
struct gdbarch_info
|
|
|
|
|
{
|
2011-01-08 03:36:19 +08:00
|
|
|
/* Use default: NULL (ZERO). */
|
1999-07-20 07:30:11 +08:00
|
|
|
const struct bfd_arch_info *bfd_arch_info;
|
1999-06-15 02:08:47 +08:00
|
|
|
|
2001-12-30 03:25:58 +08:00
|
|
|
/* Use default: BFD_ENDIAN_UNKNOWN (NB: is not ZERO). */
|
2014-01-02 11:02:56 +08:00
|
|
|
enum bfd_endian byte_order;
|
1999-06-15 02:08:47 +08:00
|
|
|
|
2014-01-02 11:02:56 +08:00
|
|
|
enum bfd_endian byte_order_for_code;
|
2008-08-12 03:00:25 +08:00
|
|
|
|
2011-01-08 03:36:19 +08:00
|
|
|
/* Use default: NULL (ZERO). */
|
1999-07-20 07:30:11 +08:00
|
|
|
bfd *abfd;
|
1999-06-15 02:08:47 +08:00
|
|
|
|
2011-01-08 03:36:19 +08:00
|
|
|
/* Use default: NULL (ZERO). */
|
2015-09-30 23:21:52 +08:00
|
|
|
void *tdep_info;
|
2003-01-05 07:38:46 +08:00
|
|
|
|
|
|
|
|
/* Use default: GDB_OSABI_UNINITIALIZED (-1). */
|
|
|
|
|
enum gdb_osabi osabi;
|
2006-11-29 06:10:26 +08:00
|
|
|
|
|
|
|
|
/* Use default: NULL (ZERO). */
|
|
|
|
|
const struct target_desc *target_desc;
|
1999-07-20 07:30:11 +08:00
|
|
|
};
|
1999-06-15 02:08:47 +08:00
|
|
|
|
1999-08-31 09:14:27 +08:00
|
|
|
typedef struct gdbarch *(gdbarch_init_ftype) (struct gdbarch_info info, struct gdbarch_list *arches);
|
2000-06-10 13:37:47 +08:00
|
|
|
typedef void (gdbarch_dump_tdep_ftype) (struct gdbarch *gdbarch, struct ui_file *file);
|
1999-06-15 02:08:47 +08:00
|
|
|
|
2000-06-10 13:37:47 +08:00
|
|
|
/* DEPRECATED - use gdbarch_register() */
|
1999-08-31 09:14:27 +08:00
|
|
|
extern void register_gdbarch_init (enum bfd_architecture architecture, gdbarch_init_ftype *);
|
1999-06-15 02:08:47 +08:00
|
|
|
|
2000-06-10 13:37:47 +08:00
|
|
|
extern void gdbarch_register (enum bfd_architecture architecture,
|
|
|
|
|
gdbarch_init_ftype *,
|
|
|
|
|
gdbarch_dump_tdep_ftype *);
|
|
|
|
|
|
1999-06-15 02:08:47 +08:00
|
|
|
|
2000-06-07 12:38:02 +08:00
|
|
|
/* Return a freshly allocated, NULL terminated, array of the valid
|
|
|
|
|
architecture names. Since architectures are registered during the
|
|
|
|
|
_initialize phase this function only returns useful information
|
2011-01-08 03:36:19 +08:00
|
|
|
once initialization has been completed. */
|
2000-06-07 12:38:02 +08:00
|
|
|
|
|
|
|
|
extern const char **gdbarch_printable_names (void);
|
|
|
|
|
|
|
|
|
|
|
1999-06-15 02:08:47 +08:00
|
|
|
/* Helper function. Search the list of ARCHES for a GDBARCH that
|
2011-01-08 03:36:19 +08:00
|
|
|
matches the information provided by INFO. */
|
1999-06-15 02:08:47 +08:00
|
|
|
|
2006-11-29 06:10:26 +08:00
|
|
|
extern struct gdbarch_list *gdbarch_list_lookup_by_info (struct gdbarch_list *arches, const struct gdbarch_info *info);
|
1999-06-15 02:08:47 +08:00
|
|
|
|
|
|
|
|
|
|
|
|
|
/* Helper function. Create a preliminary ``struct gdbarch''. Perform
|
2006-11-29 06:10:26 +08:00
|
|
|
basic initialization using values obtained from the INFO and TDEP
|
1999-06-15 02:08:47 +08:00
|
|
|
parameters. set_gdbarch_*() functions are called to complete the
|
2011-01-08 03:36:19 +08:00
|
|
|
initialization of the object. */
|
1999-06-15 02:08:47 +08:00
|
|
|
|
1999-08-31 09:14:27 +08:00
|
|
|
extern struct gdbarch *gdbarch_alloc (const struct gdbarch_info *info, struct gdbarch_tdep *tdep);
|
1999-06-15 02:08:47 +08:00
|
|
|
|
|
|
|
|
|
2000-06-10 13:37:47 +08:00
|
|
|
/* Helper function. Free a partially-constructed ``struct gdbarch''.
|
|
|
|
|
It is assumed that the caller freeds the ``struct
|
2011-01-08 03:36:19 +08:00
|
|
|
gdbarch_tdep''. */
|
2000-06-10 13:37:47 +08:00
|
|
|
|
2000-03-22 04:40:43 +08:00
|
|
|
extern void gdbarch_free (struct gdbarch *);
|
|
|
|
|
|
|
|
|
|
|
2003-07-23 03:49:58 +08:00
|
|
|
/* Helper function. Allocate memory from the ``struct gdbarch''
|
|
|
|
|
obstack. The memory is freed when the corresponding architecture
|
|
|
|
|
is also freed. */
|
|
|
|
|
|
|
|
|
|
extern void *gdbarch_obstack_zalloc (struct gdbarch *gdbarch, long size);
|
|
|
|
|
#define GDBARCH_OBSTACK_CALLOC(GDBARCH, NR, TYPE) ((TYPE *) gdbarch_obstack_zalloc ((GDBARCH), (NR) * sizeof (TYPE)))
|
|
|
|
|
#define GDBARCH_OBSTACK_ZALLOC(GDBARCH, TYPE) ((TYPE *) gdbarch_obstack_zalloc ((GDBARCH), sizeof (TYPE)))
|
|
|
|
|
|
2015-08-30 06:07:50 +08:00
|
|
|
/* Duplicate STRING, returning an equivalent string that's allocated on the
|
|
|
|
|
obstack associated with GDBARCH. The string is freed when the corresponding
|
|
|
|
|
architecture is also freed. */
|
|
|
|
|
|
|
|
|
|
extern char *gdbarch_obstack_strdup (struct gdbarch *arch, const char *string);
|
2003-07-23 03:49:58 +08:00
|
|
|
|
2011-01-08 03:36:19 +08:00
|
|
|
/* Helper function. Force an update of the current architecture.
|
1999-06-15 02:08:47 +08:00
|
|
|
|
2001-05-15 00:43:35 +08:00
|
|
|
The actual architecture selected is determined by INFO, ``(gdb) set
|
|
|
|
|
architecture'' et.al., the existing architecture and BFD's default
|
|
|
|
|
architecture. INFO should be initialized to zero and then selected
|
|
|
|
|
fields should be updated.
|
1999-06-15 02:08:47 +08:00
|
|
|
|
2011-01-08 03:36:19 +08:00
|
|
|
Returns non-zero if the update succeeds. */
|
2000-08-11 09:30:11 +08:00
|
|
|
|
|
|
|
|
extern int gdbarch_update_p (struct gdbarch_info info);
|
1999-06-15 02:08:47 +08:00
|
|
|
|
|
|
|
|
|
2003-11-10 12:39:17 +08:00
|
|
|
/* Helper function. Find an architecture matching info.
|
|
|
|
|
|
|
|
|
|
INFO should be initialized using gdbarch_info_init, relevant fields
|
|
|
|
|
set, and then finished using gdbarch_info_fill.
|
|
|
|
|
|
|
|
|
|
Returns the corresponding architecture, or NULL if no matching
|
2009-07-03 01:29:17 +08:00
|
|
|
architecture was found. */
|
2003-11-10 12:39:17 +08:00
|
|
|
|
|
|
|
|
extern struct gdbarch *gdbarch_find_by_info (struct gdbarch_info info);
|
|
|
|
|
|
|
|
|
|
|
2012-11-14 23:40:35 +08:00
|
|
|
/* Helper function. Set the target gdbarch to "gdbarch". */
|
2003-11-10 12:39:17 +08:00
|
|
|
|
2012-11-14 23:40:35 +08:00
|
|
|
extern void set_target_gdbarch (struct gdbarch *gdbarch);
|
2003-11-10 12:39:17 +08:00
|
|
|
|
1999-06-15 02:08:47 +08:00
|
|
|
|
|
|
|
|
/* Register per-architecture data-pointer.
|
|
|
|
|
|
|
|
|
|
Reserve space for a per-architecture data-pointer. An identifier
|
|
|
|
|
for the reserved data-pointer is returned. That identifer should
|
2001-02-07 10:17:48 +08:00
|
|
|
be saved in a local static variable.
|
1999-06-15 02:08:47 +08:00
|
|
|
|
2003-08-05 06:24:44 +08:00
|
|
|
Memory for the per-architecture data shall be allocated using
|
|
|
|
|
gdbarch_obstack_zalloc. That memory will be deleted when the
|
|
|
|
|
corresponding architecture object is deleted.
|
1999-06-15 02:08:47 +08:00
|
|
|
|
2001-02-07 10:17:48 +08:00
|
|
|
When a previously created architecture is re-selected, the
|
|
|
|
|
per-architecture data-pointer for that previous architecture is
|
2002-06-09 02:09:01 +08:00
|
|
|
restored. INIT() is not re-called.
|
1999-06-15 02:08:47 +08:00
|
|
|
|
|
|
|
|
Multiple registrarants for any architecture are allowed (and
|
|
|
|
|
strongly encouraged). */
|
|
|
|
|
|
2001-02-07 10:17:48 +08:00
|
|
|
struct gdbarch_data;
|
1999-06-15 02:08:47 +08:00
|
|
|
|
2004-03-16 04:38:08 +08:00
|
|
|
typedef void *(gdbarch_data_pre_init_ftype) (struct obstack *obstack);
|
|
|
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extern struct gdbarch_data *gdbarch_data_register_pre_init (gdbarch_data_pre_init_ftype *init);
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typedef void *(gdbarch_data_post_init_ftype) (struct gdbarch *gdbarch);
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extern struct gdbarch_data *gdbarch_data_register_post_init (gdbarch_data_post_init_ftype *init);
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extern void deprecated_set_gdbarch_data (struct gdbarch *gdbarch,
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struct gdbarch_data *data,
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void *pointer);
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1999-06-15 02:08:47 +08:00
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2002-05-12 09:02:58 +08:00
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extern void *gdbarch_data (struct gdbarch *gdbarch, struct gdbarch_data *);
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1999-06-15 02:08:47 +08:00
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2000-09-02 08:01:33 +08:00
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/* Set the dynamic target-system-dependent parameters (architecture,
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2011-01-08 03:36:19 +08:00
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byte-order, ...) using information found in the BFD. */
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1999-04-16 09:35:26 +08:00
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1999-08-31 09:14:27 +08:00
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extern void set_gdbarch_from_file (bfd *);
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1999-04-16 09:35:26 +08:00
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1999-10-26 11:43:48 +08:00
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/* Initialize the current architecture to the "first" one we find on
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our list. */
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extern void initialize_current_architecture (void);
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1999-04-16 09:35:26 +08:00
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/* gdbarch trace variable */
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2012-08-02 17:36:40 +08:00
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extern unsigned int gdbarch_debug;
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1999-04-16 09:35:26 +08:00
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2000-06-10 13:37:47 +08:00
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extern void gdbarch_dump (struct gdbarch *gdbarch, struct ui_file *file);
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1999-06-15 02:08:47 +08:00
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1999-04-16 09:35:26 +08:00
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#endif
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