I used a refactoring script to add target_ops arguments to all the
target methods. In order to make this script work a little better,
this patch adds a new "remote_load" function; this eliminates the need
to later change the signature of generic_load.
2014-02-19 Tom Tromey <tromey@redhat.com>
* remote.c (remote_load): New function.
(init_remote_ops): Use it.
This adds a "self" argument to to_supports_btrace. Due to how one
implementation of this method is shared with gdbserver this required a
small change to gdbserver as well.
2014-02-19 Tom Tromey <tromey@redhat.com>
* common/linux-btrace.c (linux_supports_btrace): Add "ops"
argument.
* common/linux-btrace.h (linux_supports_btrace): Update.
* remote.c (remote_supports_btrace): Add "self" argument.
* target-delegates.c: Rebuild.
* target.c (target_supports_btrace): Remove.
* target.h (struct target_ops) <to_supports_btrace>: Add
target_ops argument.
(target_supports_btrace): New define.
2014-02-19 Tom Tromey <tromey@redhat.com>
* target.h (struct target_ops) <supports_btrace>: Add target_ops
argument.
(target_supports_btrace): Update.
This patch replaces some code in the record targets with target method
delegation.
record-full.c stores pointers to many target methods when the record
target is pushed. Then it later delegates some calls via these. This
is wrong because it violates the target stack contract. In particular
it is ok to unpush a target at any stratum, but record-full does not
keep track of this, so it could potentially call into an unpushed
target.
This patch fixes the problem by using the newly-introduced generic
approach to target delegation for the methods in question.
2014-02-19 Tom Tromey <tromey@redhat.com>
* record-full.c (record_full_beneath_to_resume_ops)
(record_full_beneath_to_resume, record_full_beneath_to_wait_ops)
(record_full_beneath_to_wait)
(record_full_beneath_to_store_registers_ops)
(record_full_beneath_to_store_registers)
(record_full_beneath_to_xfer_partial_ops)
(record_full_beneath_to_xfer_partial)
(record_full_beneath_to_insert_breakpoint_ops)
(record_full_beneath_to_insert_breakpoint)
(record_full_beneath_to_remove_breakpoint_ops)
(record_full_beneath_to_remove_breakpoint)
(record_full_beneath_to_stopped_by_watchpoint)
(record_full_beneath_to_stopped_data_address)
(record_full_beneath_to_async, tmp_to_resume_ops, tmp_to_resume)
(tmp_to_wait_ops, tmp_to_wait, tmp_to_store_registers_ops)
(tmp_to_store_registers, tmp_to_xfer_partial_ops)
(tmp_to_xfer_partial, tmp_to_instmp_to_insert_breakpoint_ops)
(tmp_to_insert_breakpoint, tmp_to_remove_breakpoint_ops)
(tmp_to_remove_breakpoint, tmp_to_stopped_by_watchpoint)
(tmp_to_stopped_data_address, tmp_to_async): Remove.
(record_full_open_1, record_full_open): Update. Use RECORD_IS_USED.
(record_full_resume, record_full_wait_1)
(record_full_stopped_by_watchpoint, record_full_stopped_data_address)
(record_full_store_registers, record_full_xfer_partial)
(record_full_insert_breakpoint, record_full_remove_breakpoint)
(record_full_async, record_full_core_xfer_partial): Use target
delegation.
* target-delegates.c: Rebuild.
* target.c (current_xfer_partial): Remove.
(update_current_target): Do not INHERIT or de_fault
to_insert_breakpoint, to_remove_breakpoint,
to_stopped_data_address, to_stopped_by_watchpoint, to_can_async_p,
to_is_async_p, to_async. Do not set to_xfer_partial field.
(default_xfer_partial): Simplify.
(current_xfer_partial): Remove.
(target_wait, target_resume): Simplify.
(find_default_can_async_p, find_default_is_async_p): Update.
(init_dummy_target): Don't set to_can_async_p, to_is_async_p,
to_xfer_partial, to_stopped_by_watchpoint,
to_stopped_data_address.
(target_store_registers): Simplify.
(forward_target_remove_breakpoint)
(forward_target_insert_breakpoint): Remove.
(target_remove_breakpoint, target_insert_breakpoint)
(debug_to_insert_breakpoint, debug_to_remove_breakpoint): Update.
* target.h (struct target_ops) <to_resume, to_wait,
to_store_registers, to_insert_breakpoint, to_remove_breakpoint,
to_stopped_by_watchpoint, to_stopped_data_address, to_can_async_p,
to_is_async_p, to_async, to_xfer_partial>: Add TARGET_DEFAULT
markup.
(forward_target_remove_breakpoint)
(forward_target_insert_breakpoint): Remove.
* record-btrace.c (record_btrace_remove_breakpoint): Delegate
directly.
(record_btrace_insert_breakpoint): Delegate directly.
This patch adds a new script, call make-target-delegates, which
auto-generates some target delegation code based on annotations in
target.h. This adds the new delegation macros, the new generated
file, and adds the necessary calls to the new generated functions to
target.c. It doesn't, however, add any actual annotations to the
target methods, leaving these for separate patches.
2014-02-19 Tom Tromey <tromey@redhat.com>
PR build/7701:
* target-delegates.c: New file.
* target.c: Include target-delegates.c.
(init_dummy_target): Call install_dummy_methods.
(complete_target_initialization): Call install_delegators.
* target.h (TARGET_DEFAULT_IGNORE, TARGET_DEFAULT_NORETURN)
(TARGET_DEFAULT_RETURN, TARGET_DEFAULT_FUNC): New defines.
* make-target-delegates: New file.
This patch adds find_target_at to determine whether a target appears
at a given stratum. This new function lets us clean up
find_record_target a bit, and is generally useful.
2014-02-19 Tom Tromey <tromey@redhat.com>
* record.c (find_record_target): Use find_target_at.
* target.c (find_target_at): New function.
* target.h (find_target_at): Declare.
This patch allows the user to override powerpc64-ld's default for
providing linker generated register save and restore functions as used
by gcc -Os code. Normally these are not provided by ld -r, so Linux
kernel modules have needed to include their own copies.
bfd/
* elf64-ppc.h (struct ppc64_elf_params): Add save_restore_funcs.
* elf64-ppc.c (ppc64_elf_func_desc_adjust): Use it to control
provision of out-of-line register save/restore routines.
ld/
* emultempl/ppc64elf.em (params): Init new field.
(ppc_create_output_section_statements): Set params.save_restore_funcs
default.
(PARSE_AND_LIST_*): Add support for --save-restore-funcs and
--no-save-restore-funcs.
This patch removes startup_gdbarch because it is not used anymore.
After this patch,
[PATCH] Multi-process + multi-arch: GDB
https://sourceware.org/ml/gdb-patches/2012-11/msg00228.html
global variable target_gdbarch is removed and gdbarch becomes
per-inferior. Then, we don't have to keep global variable
startup_gdbarch.
Rebuild GDB with all targets. Is it OK?
gdb:
2014-02-18 Yao Qi <yao@codesourcery.com>
PR gdb/16220
* gdbarch.sh: Remove startup_gdbarch.
* gdbarch.c: Regenerated.
* gdbarch.h: Likewise.
execute permission regardless of the underlying PT_LOAD segment permissions.
Deleting this code allows the default linker behavior which is to set the
dynamic segment to the same permissions as the sections that make it up.
This change alters one existing test case to check the segment flags for
PT_DYNAMIC.
bfd/ChangeLog
* elfxx-mips.c(_bfd_mips_elf_modify_segment_map): Deleted hard coding of
PT_DYNAMIC segment flags.
ld/testsuite/ChangeLog
* ld-mips-elf/pic-and-nonpic-3a.sd: Check DYNAMIC segment flags.
* Makefile.in (TESTS): New variable.
(expanded_tests, expanded_tests_or_none): New variables
(check-single): Pass $(expanded_tests_or_none) to runtest.
(check-parallel): Only run tests in $(TESTS) if non-empty.
(check/no-matching-tests-found): New rule.
* README: Document TESTS makefile variable.
sim/rx/gdb-if.c had a function named `rx_signal_to_host'. This
function mapped signal numbers used by the BSP to host signal
numbers which, at one time a while back, were used by GDB
as target signal numbers. This change updates the signal
numbers returned to be those names prefixed with "GDB_SIGNAL_"
as defined in include/gdb/signals.h.
It also changes the name of the function somewhat to better
match what the function currently does. I noticed that this
function is not static - and there's no reason for it not
to be - so I made it static too.
* gdb-if.c (rx_signal_to_host): Rename to
`rx_signal_to_gdb_signal'. Make static. Update all callers
to use new name. Use signal names from include/gdb/signals.h.
Many of the simulators change the SIGINT handler.
E.g., moxie/interp.c:
sigsave = signal (SIGINT, interrupt);
However, this is unnecessary.
remote-sim.h already provides an API for asynchronously stopping
a sim; and both gdb and the drivers (run.c and nrun.c at least,
I didn't check the others) install a SIGINT handler which
calls this method.
URL: https://sourceware.org/bugzilla/show_bug.cgi?id=16450
Reported-by: Tom Tromey <tromey@redhat.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
When cross-compiling GDB for PPC, there's a prerequisite "-lz" for psim
that results in a build failure. With such prerequisite, GNU Make will
try to search the library from build machine's /usr/lib which is wrong.
On 64-bit Linux build machines the compilation will fail because of this.
URL: https://sourceware.org/bugzilla/show_bug.cgi?id=12202
The g10 is an rl78 variant which has fewer registers. Aside from the
obvious addition of a new register_name() function which omits
registers which the g10 lacks, this change also updates the
return_value() function with the conventions specified by the ABI for
finding and setting return values.
* rl78-tdep.c (rl78_g10_register_name): New function.
(rl78_return_value): Add g10 support.
(rl78_gdbarch_init): Register rl78_g10_register_name for the
g10.
abfd->section_count unexpectedly changes between 218 and 248 in:
150 bfd_simple_get_relocated_section_contents (bfd *abfd,
[...]
218 saved_offsets = malloc (sizeof (struct saved_output_info)
219 * abfd->section_count);
[...]
230 _bfd_generic_link_add_symbols (abfd, &link_info);
[...]
248 bfd_map_over_sections (abfd, simple_restore_output_info, saved_offsets);
_bfd_generic_link_add_symbols increases section_count
and simple_restore_output_info later reads unallocated part of saved_offsets.
READ of size 8 at 0x601c0000c5c0 thread T0
#0 0x1124770 in simple_restore_output_info (.../gdb/gdb+0x1124770)
#1 0x10ecd51 in bfd_map_over_sections (.../gdb/gdb+0x10ecd51)
#2 0x1125150 in bfd_simple_get_relocated_section_contents (.../gdb/gdb+0x1125150)
bfd/
2014-02-17 Jan Kratochvil <jan.kratochvil@redhat.com>
PR binutils/16595
* simple.c (struct saved_offsets): New.
(simple_save_output_info): Use it for ptr.
(simple_restore_output_info): Use it for ptr. Check section_count.
(bfd_simple_get_relocated_section_contents): Use it for saved_offsets.
Moves assorted variables used to communicate between ld and bfd into
a struct, hooks it into the bfd link_hash_table early, and removes
all other places where such variables were passed piecemeal.
bfd/
* elf64-ppc.h (struct ppc64_elf_params): Define.
(ppc64_elf_init_stub_bfd, ppc64_elf_edit_opd, ppc64_elf_tls_setup,
ppc64_elf_setup_section_lists, ppc64_elf_size_stubs,
ppc64_elf_build_stubs): Update prototype.
* elf64-ppp.c (struct ppc_link_hash_table): Add params, delete other
fields now in params. Adjust code throughout file.
(ppc64_elf_init_stub_bfd): Delete "abfd" parameter, add "params".
Save params pointer in htab.
(ppc64_elf_edit_opd, ppc64_elf_tls_setup,
ppc64_elf_setup_section_lists, ppc64_elf_size_stubs,
ppc64_elf_build_stubs): Remove parameters now in "params".
ld/
* emultemps/ppc64elf.em (params): New static struct replacing
various other static vars. Adjust code throughout file.
This fixes the glaring error that the ppc476 workaround wasn't
actually enabled for ld -r, and adjusts relocations to match moved
code.
bfd/
* elf32-ppc.c (ppc_elf_relocate_section): Move relocs on insns
patched for ppc476 workaround. Reapply branch taken/not taken
relocs.
ld/
* emultempl/ppc32elf.em (ppc_after_open_output): Really enable
ppc476 workaround for ld -r.
A recent change (commit 3398af6aa3)
in gnu-nat.c causes the some missing-prototypes warnings,
../../../git/gdb/gnu-nat.c:1864:1: error: no previous prototype for 'S_proc_pid2task_reply' [-Werror=missing-prototypes]
../../../git/gdb/gnu-nat.c:1866:1: error: no previous prototype for 'S_proc_task2pid_reply' [-Werror=missing-prototypes]
../../../git/gdb/gnu-nat.c:1868:1: error: no previous prototype for 'S_proc_task2proc_reply' [-Werror=missing-prototypes]
A new macro ILL_RPC was added recently, which defines some external
functions. However, they are not declared and GCC complains about this.
This patch is to add the declarations of these external function in
macro ILL_RPC.
gdb:
2014-02-17 Yao Qi <yao@codesourcery.com>
* gnu-nat.c (ILL_RPC): Declare defined function.
../../../git/gdb/gnu-nat.c: In function 'gnu_read_inferior':
../../../git/gdb/gnu-nat.c:2282:3: error: pointer targets in passing argument 5 of 'vm_read' differ in signedness [-Werror=pointer-sign]
In file included from /home/yao/Software/hurd-toolchain/bin/../i686-pc-gnu/libc/usr/include/mach.h:38:0,
from ./nm.h:23,
from ../../../git/gdb/defs.h:500,
from ../../../git/gdb/gnu-nat.c:23:
/home/yao/Software/hurd-toolchain/bin/../i686-pc-gnu/libc/usr/include/mach/mach_interface.h:843:15: note: expected 'mach_msg_type_number_t *' but argument is of type 'int *'
../../../git/gdb/gnu-nat.c: In function 'gnu_write_inferior':
../../../git/gdb/gnu-nat.c:2339:4: error: pointer targets in passing argument 5 of 'vm_read' differ in signedness [-Werror=pointer-sign]
In file included from /home/yao/Software/hurd-toolchain/bin/../i686-pc-gnu/libc/usr/include/mach.h:38:0,
from ./nm.h:23,
from ../../../git/gdb/defs.h:500,
from ../../../git/gdb/gnu-nat.c:23:
/home/yao/Software/hurd-toolchain/bin/../i686-pc-gnu/libc/usr/include/mach/mach_interface.h:843:15: note: expected 'mach_msg_type_number_t *' but argument is of type 'int *'
This patch fixes these warnings.
gdb:
2014-02-17 Yao Qi <yao@codesourcery.com>
* gnu-nat.c (gnu_read_inferior): Change 'copy_count' type to
mach_msg_type_number_t.
(gnu_write_inferior): Likewise.
I've seen some -Wformat warnings when build native gdb for hurd.
../../../git/gdb/gnu-nat.c:2384:8: error: format '%x' expects argument of type 'unsigned int', but argument 2 has type 'vm_address_t' [-Werror=format]
../../../git/gdb/gnu-nat.c:2394:8: error: format '%x' expects argument of type 'unsigned int', but argument 2 has type 'vm_address_t' [-Werror=format]
../../../git/gdb/gnu-nat.c: In function 'steal_exc_port':
../../../git/gdb/gnu-nat.c:2898:5: error: format '%d' expects argument of type 'int', but argument 2 has type 'mach_port_t' [-Werror=format]
in usr/include/mach/port.h, we have:
typedef vm_offset_t mach_port_t;
and in usr/include/mach/machine/vm_types.h, we have:
typedef unsigned long vm_offset_t;
so this patch changes '%d' to '%lu' in format string for mach_port_t
variables.
Similarly, in usr/include/mach/std_types.h, we have,
typedef vm_offset_t vm_address_t;
this patch also changes '%x' to '%lx' in gnu_write_inferior.
gdb:
2014-02-17 Yao Qi <yao@codesourcery.com>
* gnu-nat.c (proc_get_exception_port): Use 'lu' insetad of 'd'
in format string.
(proc_steal_exc_port, make_proc, inf_set_pid): Likewise.
(inf_validate_procs, inf_signal): Likewise.
(S_exception_raise_request): Likewise.
(do_mach_notify_dead_name): Likewise.
(steal_exc_port): Likewise.
(gnu_read_inferior): Change 'copy_count''s type to
mach_msg_type_number_t.
(gnu_write_inferior): Likewise. Use 'lx' instead of 'x' in
format string.
If GDB has crashed then gdb_spawn_id still exists (although it does not work).
So my patch does not change anything. And also currently it will leave the
stale gdbserver running anyway.
In general if gdb_spawn_id does not exist then send_gdb + gdb_expect just do
not make sense anyway. So this patch just prevents the error in such case.
The killing of stale gdbserver could be improved multiple ways (also as
suggested by Pedro in the original thread) but that is IMO outside of the
scope of this patch. Apparently if there is no good response from GDB then
gdb_finish() should try to call gdb_start just to kill that gdbserver, IIUC.
gdb/testsuite/
2014-02-16 Jan Kratochvil <jan.kratochvil@redhat.com>
Fix "ERROR: no fileid for" in the testsuite.
* lib/gdb.exp (gdb_finish): Check gdb_spawn_id.
Message-ID: <20140206205814.GA18495@host2.jankratochvil.net>
In commit 98882a2651, STARTUP_WITH_SHELL was made
a runtime toggle, startup-with-shell. The Hurd code was missed to be adjusted;
it had a value hard-coded instead of using START_INFERIOR_TRAPS_EXPECTED. Fix
that, and also simplify gnu-nat's pending_execs handling from counting to just
a flag.
gdb/
* gnu-nat.c (struct inf): Change pending_execs member to a 1-bit
flag. Adjust all users; in particular...
(gnu_wait): ..., don't decrement its value in here...
(gnu_create_inferior): ..., and instead set the flag in here,
around the startup_inferior call, and call that one with
START_INFERIOR_TRAPS_EXPECTED.
gdb/
* reply_mig_hack.awk: In phase 5, keep going if we have not yet
collected the type check structures.
Based on a patch by David Michael <fedora.dm0@gmail.com>.
