mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-13 04:13:33 +08:00
197e01b6dc
* arm-tdep.c: * ia64-tdep.c: * i386-tdep.c: * hpread.c: * hppa-tdep.c: * hppa-hpux-tdep.c: * gnu-nat.c: * gdbtypes.c: * gdbarch.h: * gdbarch.c: * eval.c: * dwarf2read.c: * dbxread.c: * copying: * symfile.c: * stabsread.c: * sh64-tdep.c: * sh-tdep.c: * s390-tdep.c: * rs6000-tdep.c: * remote.c: * remote-mips.c: * mips-tdep.c: * mdebugread.c: * linux-nat.c: * infrun.c: * xcoffread.c: * win32-nat.c: * valops.c: * utils.c: * tracepoint.c: * target.c: * symtab.c: * c-exp.y: * ada-valprint.c: * ada-typeprint.c: * ada-lex.l: * ada-lang.h: * ada-lang.c: * ada-exp.y: * alphafbsd-tdep.c: * alphabsd-tdep.h: * alphabsd-tdep.c: * alphabsd-nat.c: * alpha-tdep.h: * alpha-tdep.c: * alpha-osf1-tdep.c: * alpha-nat.c: * alpha-mdebug-tdep.c: * alpha-linux-tdep.c: * alpha-linux-nat.c: * aix-thread.c: * abug-rom.c: * arch-utils.c: * annotate.h: * annotate.c: * amd64obsd-tdep.c: * amd64obsd-nat.c: * amd64nbsd-tdep.c: * amd64nbsd-nat.c: * amd64fbsd-tdep.c: * amd64fbsd-nat.c: * amd64bsd-nat.c: * amd64-tdep.h: * amd64-tdep.c: * amd64-sol2-tdep.c: * amd64-nat.h: * amd64-nat.c: * amd64-linux-tdep.c: * amd64-linux-nat.c: * alphanbsd-tdep.c: * block.h: * block.c: * bfd-target.h: * bfd-target.c: * bcache.h: * bcache.c: * ax.h: * ax-general.c: * ax-gdb.h: * ax-gdb.c: * avr-tdep.c: * auxv.h: * auxv.c: * armnbsd-tdep.c: * armnbsd-nat.c: * arm-tdep.h: * arm-linux-nat.c: * arch-utils.h: * charset.c: * call-cmds.h: * c-valprint.c: * c-typeprint.c: * c-lang.h: * c-lang.c: * buildsym.h: * buildsym.c: * bsd-uthread.h: * bsd-uthread.c: * bsd-kvm.h: * bsd-kvm.c: * breakpoint.h: * core-regset.c: * core-aout.c: * completer.h: * completer.c: * complaints.h: * complaints.c: * command.h: * coffread.c: * coff-solib.h: * coff-solib.c: * coff-pe-read.h: * coff-pe-read.c: * cli-out.h: * cli-out.c: * charset.h: * dink32-rom.c: * dictionary.h: * dictionary.c: * demangle.c: * defs.h: * dcache.h: * dcache.c: * d10v-tdep.c: * cpu32bug-rom.c: * cp-valprint.c: * cp-support.h: * cp-support.c: * cp-namespace.c: * cp-abi.h: * cp-abi.c: * corelow.c: * corefile.c: * environ.c: * elfread.c: * dwarfread.c: * dwarf2loc.c: * dwarf2expr.h: * dwarf2expr.c: * dwarf2-frame.h: * dwarf2-frame.c: * dve3900-rom.c: * dummy-frame.h: * dummy-frame.c: * dsrec.c: * doublest.h: * doublest.c: * disasm.h: * disasm.c: * fork-child.c: * findvar.c: * fbsd-nat.h: * fbsd-nat.c: * f-valprint.c: * f-typeprint.c: * f-lang.h: * f-lang.c: * expression.h: * expprint.c: * exec.h: * exec.c: * exceptions.h: * exceptions.c: * event-top.h: * event-top.c: * event-loop.h: * event-loop.c: * gdb.c: * gdb-stabs.h: * gdb-events.h: * gdb-events.c: * gcore.c: * frv-tdep.h: * frv-tdep.c: * frv-linux-tdep.c: * frame.h: * frame.c: * frame-unwind.h: * frame-unwind.c: * frame-base.h: * frame-base.c: * gdb_vfork.h: * gdb_thread_db.h: * gdb_string.h: * gdb_stat.h: * gdb_regex.h: * gdb_ptrace.h: * gdb_proc_service.h: * gdb_obstack.h: * gdb_locale.h: * gdb_dirent.h: * gdb_curses.h: * gdb_assert.h: * gdbarch.sh: * gdb.h: * hpux-thread.c: * hppabsd-nat.c: * hppa-tdep.h: * hpacc-abi.c: * h8300-tdep.c: * gregset.h: * go32-nat.c: * gnu-v3-abi.c: * gnu-v2-abi.h: * gnu-v2-abi.c: * gnu-nat.h: * glibc-tdep.c: * gdbtypes.h: * gdbcore.h: * gdbcmd.h: * i386nbsd-tdep.c: * i386nbsd-nat.c: * i386gnu-tdep.c: * i386gnu-nat.c: * i386fbsd-tdep.c: * i386fbsd-nat.c: * i386bsd-tdep.c: * i386bsd-nat.h: * i386bsd-nat.c: * i386-tdep.h: * i386-sol2-nat.c: * i386-nto-tdep.c: * i386-nat.c: * i386-linux-tdep.h: * i386-linux-tdep.c: * i386-linux-nat.c: * i386-cygwin-tdep.c: * inf-ttrace.c: * inf-ptrace.h: * inf-ptrace.c: * inf-loop.h: * inf-loop.c: * inf-child.h: * inf-child.c: * ia64-tdep.h: * ia64-linux-nat.c: * i387-tdep.h: * i387-tdep.c: * i386v4-nat.c: * i386v-nat.c: * i386obsd-tdep.c: * i386obsd-nat.c: * kod.c: * jv-valprint.c: * jv-typeprint.c: * jv-lang.h: * jv-lang.c: * irix5-nat.c: * iq2000-tdep.c: * interps.h: * interps.c: * inftarg.c: * inflow.h: * inflow.c: * inferior.h: * infcmd.c: * infcall.h: * infcall.c: * inf-ttrace.h: * m32r-tdep.h: * m32r-tdep.c: * m32r-rom.c: * m32r-linux-tdep.c: * m32r-linux-nat.c: * m2-valprint.c: * m2-typeprint.c: * m2-lang.h: * m2-lang.c: * lynx-nat.c: * linux-thread-db.c: * linux-nat.h: * linespec.c: * libunwind-frame.h: * libunwind-frame.c: * language.h: * language.c: * macroexp.c: * macrocmd.c: * m88kbsd-nat.c: * m88k-tdep.h: * m88k-tdep.c: * m68klinux-tdep.c: * m68klinux-nat.c: * m68kbsd-tdep.c: * m68kbsd-nat.c: * m68k-tdep.h: * m68k-tdep.c: * mips-linux-nat.c: * mips-irix-tdep.c: * minsyms.c: * memattr.h: * memattr.c: * mem-break.c: * mdebugread.h: * main.h: * main.c: * macrotab.h: * macrotab.c: * macroscope.h: * macroscope.c: * macroexp.h: * nbsd-tdep.c: * mt-tdep.c: * monitor.h: * monitor.c: * mn10300-tdep.h: * mn10300-tdep.c: * mn10300-linux-tdep.c: * mipsv4-nat.c: * mipsread.c: * mipsnbsd-tdep.h: * mipsnbsd-tdep.c: * mipsnbsd-nat.c: * mips64obsd-tdep.c: * mips64obsd-nat.c: * mips-tdep.h: * mips-mdebug-tdep.c: * mips-linux-tdep.c: * osabi.h: * osabi.c: * ocd.h: * ocd.c: * observer.c: * objfiles.h: * objfiles.c: * objc-lang.h: * objc-lang.c: * objc-exp.y: * nto-tdep.h: * nto-tdep.c: * nto-procfs.c: * nlmread.c: * nbsd-tdep.h: * ppcobsd-tdep.c: * ppcobsd-nat.c: * ppcnbsd-tdep.h: * ppcnbsd-tdep.c: * ppcnbsd-nat.c: * ppcbug-rom.c: * ppc-tdep.h: * ppc-sysv-tdep.c: * ppc-linux-tdep.c: * ppc-linux-nat.c: * ppc-bdm.c: * parser-defs.h: * parse.c: * p-valprint.c: * p-typeprint.c: * p-lang.h: * p-lang.c: * remote-fileio.h: * remote-fileio.c: * remote-est.c: * remote-e7000.c: * regset.h: * regset.c: * reggroups.h: * reggroups.c: * regcache.h: * regcache.c: * proc-why.c: * proc-service.c: * proc-events.c: * printcmd.c: * ppcobsd-tdep.h: * sentinel-frame.h: * sentinel-frame.c: * scm-valprint.c: * scm-tags.h: * scm-lang.h: * scm-lang.c: * scm-exp.c: * s390-tdep.h: * rom68k-rom.c: * remote.h: * remote-utils.c: * remote-st.c: * remote-sim.c: * remote-sds.c: * remote-rdp.c: * remote-rdi.c: * remote-hms.c: * sim-regno.h: * shnbsd-tdep.h: * shnbsd-tdep.c: * shnbsd-nat.c: * sh-tdep.h: * serial.h: * serial.c: * ser-unix.h: * ser-unix.c: * ser-tcp.c: * ser-pipe.c: * ser-go32.c: * ser-e7kpc.c: * ser-base.h: * ser-base.c: * solib.c: * solib-svr4.h: * solib-svr4.c: * solib-sunos.c: * solib-som.h: * solib-som.c: * solib-pa64.h: * solib-pa64.c: * solib-osf.c: * solib-null.c: * solib-legacy.c: * solib-irix.c: * solib-frv.c: * solib-aix5.c: * sol-thread.c: * sparc64-linux-tdep.c: * sparc64-linux-nat.c: * sparc-tdep.h: * sparc-tdep.c: * sparc-sol2-tdep.c: * sparc-sol2-nat.c: * sparc-nat.h: * sparc-nat.c: * sparc-linux-tdep.c: * sparc-linux-nat.c: * source.h: * source.c: * somread.c: * solist.h: * solib.h: * std-regs.c: * stack.h: * stack.c: * stabsread.h: * sparcobsd-tdep.c: * sparcnbsd-tdep.c: * sparcnbsd-nat.c: * sparc64obsd-tdep.c: * sparc64nbsd-tdep.c: * sparc64nbsd-nat.c: * sparc64fbsd-tdep.c: * sparc64fbsd-nat.c: * sparc64-tdep.h: * sparc64-tdep.c: * sparc64-sol2-tdep.c: * sparc64-nat.c: * ui-file.c: * typeprint.h: * typeprint.c: * tramp-frame.h: * tramp-frame.c: * trad-frame.h: * trad-frame.c: * tracepoint.h: * top.c: * tobs.inc: * thread.c: * terminal.h: * target.h: * symfile.h: * stop-gdb.c: * vaxbsd-nat.c: * vax-tdep.h: * vax-tdep.c: * vax-nat.c: * varobj.h: * varobj.c: * value.h: * value.c: * valprint.h: * valprint.c: * v850-tdep.c: * uw-thread.c: * user-regs.c: * ui-out.h: * ui-out.c: * ui-file.h: * xcoffsolib.h: * xcoffsolib.c: * wrapper.c: * wince.c: * wince-stub.h: * wince-stub.c: * vaxobsd-tdep.c: * vaxnbsd-tdep.c: * gdb_gcore.sh: * copying.c: * configure.ac: * aclocal.m4: * acinclude.m4: * reply_mig_hack.awk: * observer.sh: * gdb_mbuild.sh: * arm-linux-tdep.c: * blockframe.c: * dbug-rom.c: * environ.h: * dwarf2loc.h: * gdb-events.sh: * glibc-tdep.h: * gdb_wait.h: * gdbthread.h: * i386-sol2-tdep.c: * hppabsd-tdep.c: * hppa-linux-nat.c: * hppa-hpux-nat.c: * ia64-linux-tdep.c: * infptrace.c: * linespec.h: * maint.c: * mips-mdebug-tdep.h: * remote-m32r-sdi.c: * s390-nat.c: * rs6000-nat.c: * remote-utils.h: * sh3-rom.c: * sh-linux-tdep.c: * top.h: * symtab.h: * symmisc.c: * symfile-mem.c: * srec.h: * user-regs.h: * version.h: * valarith.c: * xstormy16-tdep.c: * wrapper.h: * Makefile.in: * f-exp.y: * cris-tdep.c: * cp-name-parser.y: * procfs.c: * proc-utils.h: * proc-flags.c: * proc-api.c: * p-exp.y: * m68hc11-tdep.c: * m2-exp.y: * kod.h: * kod-cisco.c: * jv-exp.y: * hppa-linux-tdep.c: Add (c) after Copyright. Update the FSF address.
739 lines
20 KiB
C
739 lines
20 KiB
C
/* Dynamic architecture support for GDB, the GNU debugger.
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Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
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Free Software Foundation, Inc.
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This file is part of GDB.
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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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the Free Software Foundation; either version 2 of the License, or
|
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(at your option) any later version.
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||
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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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||
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You should have received a copy of the GNU General Public License
|
||
along with this program; if not, write to the Free Software
|
||
Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA. */
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#include "defs.h"
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#include "arch-utils.h"
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#include "buildsym.h"
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#include "gdbcmd.h"
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#include "inferior.h" /* enum CALL_DUMMY_LOCATION et.al. */
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#include "gdb_string.h"
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#include "regcache.h"
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#include "gdb_assert.h"
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#include "sim-regno.h"
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#include "gdbcore.h"
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#include "osabi.h"
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#include "version.h"
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#include "floatformat.h"
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/* Implementation of extract return value that grubs around in the
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register cache. */
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void
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legacy_extract_return_value (struct type *type, struct regcache *regcache,
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gdb_byte *valbuf)
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{
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gdb_byte *registers = deprecated_grub_regcache_for_registers (regcache);
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gdb_byte *buf = valbuf;
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DEPRECATED_EXTRACT_RETURN_VALUE (type, registers, buf); /* OK */
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}
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/* Implementation of store return value that grubs the register cache.
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Takes a local copy of the buffer to avoid const problems. */
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void
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legacy_store_return_value (struct type *type, struct regcache *regcache,
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const gdb_byte *buf)
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{
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gdb_byte *b = alloca (TYPE_LENGTH (type));
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gdb_assert (regcache == current_regcache);
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memcpy (b, buf, TYPE_LENGTH (type));
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DEPRECATED_STORE_RETURN_VALUE (type, b);
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}
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int
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always_use_struct_convention (int gcc_p, struct type *value_type)
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{
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return 1;
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}
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|
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enum return_value_convention
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legacy_return_value (struct gdbarch *gdbarch, struct type *valtype,
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struct regcache *regcache, gdb_byte *readbuf,
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const gdb_byte *writebuf)
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{
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/* NOTE: cagney/2004-06-13: The gcc_p parameter to
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USE_STRUCT_CONVENTION isn't used. */
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int struct_return = ((TYPE_CODE (valtype) == TYPE_CODE_STRUCT
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|| TYPE_CODE (valtype) == TYPE_CODE_UNION
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|| TYPE_CODE (valtype) == TYPE_CODE_ARRAY)
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&& DEPRECATED_USE_STRUCT_CONVENTION (0, valtype));
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if (writebuf != NULL)
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{
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gdb_assert (!struct_return);
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/* NOTE: cagney/2004-06-13: See stack.c:return_command. Old
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architectures don't expect STORE_RETURN_VALUE to handle small
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structures. Should not be called with such types. */
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gdb_assert (TYPE_CODE (valtype) != TYPE_CODE_STRUCT
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&& TYPE_CODE (valtype) != TYPE_CODE_UNION);
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STORE_RETURN_VALUE (valtype, regcache, writebuf);
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}
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if (readbuf != NULL)
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{
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gdb_assert (!struct_return);
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EXTRACT_RETURN_VALUE (valtype, regcache, readbuf);
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}
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if (struct_return)
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return RETURN_VALUE_STRUCT_CONVENTION;
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else
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return RETURN_VALUE_REGISTER_CONVENTION;
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}
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int
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legacy_register_sim_regno (int regnum)
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{
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/* Only makes sense to supply raw registers. */
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gdb_assert (regnum >= 0 && regnum < NUM_REGS);
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/* NOTE: cagney/2002-05-13: The old code did it this way and it is
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suspected that some GDB/SIM combinations may rely on this
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behavour. The default should be one2one_register_sim_regno
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(below). */
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if (REGISTER_NAME (regnum) != NULL
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&& REGISTER_NAME (regnum)[0] != '\0')
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return regnum;
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else
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return LEGACY_SIM_REGNO_IGNORE;
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}
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CORE_ADDR
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generic_skip_trampoline_code (CORE_ADDR pc)
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{
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return 0;
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}
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CORE_ADDR
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generic_skip_solib_resolver (struct gdbarch *gdbarch, CORE_ADDR pc)
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{
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return 0;
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}
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int
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generic_in_solib_return_trampoline (CORE_ADDR pc, char *name)
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{
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return 0;
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}
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|
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int
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generic_in_function_epilogue_p (struct gdbarch *gdbarch, CORE_ADDR pc)
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{
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return 0;
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}
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|
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void
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generic_remote_translate_xfer_address (struct gdbarch *gdbarch,
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struct regcache *regcache,
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CORE_ADDR gdb_addr, int gdb_len,
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CORE_ADDR * rem_addr, int *rem_len)
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{
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*rem_addr = gdb_addr;
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*rem_len = gdb_len;
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}
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/* Helper functions for INNER_THAN */
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int
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core_addr_lessthan (CORE_ADDR lhs, CORE_ADDR rhs)
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{
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return (lhs < rhs);
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}
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int
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core_addr_greaterthan (CORE_ADDR lhs, CORE_ADDR rhs)
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{
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return (lhs > rhs);
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}
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/* Helper functions for TARGET_{FLOAT,DOUBLE}_FORMAT */
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const struct floatformat *
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default_float_format (struct gdbarch *gdbarch)
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{
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int byte_order = gdbarch_byte_order (gdbarch);
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switch (byte_order)
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{
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case BFD_ENDIAN_BIG:
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return &floatformat_ieee_single_big;
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case BFD_ENDIAN_LITTLE:
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return &floatformat_ieee_single_little;
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default:
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internal_error (__FILE__, __LINE__,
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_("default_float_format: bad byte order"));
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}
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}
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const struct floatformat *
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default_double_format (struct gdbarch *gdbarch)
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{
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int byte_order = gdbarch_byte_order (gdbarch);
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switch (byte_order)
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{
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case BFD_ENDIAN_BIG:
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return &floatformat_ieee_double_big;
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case BFD_ENDIAN_LITTLE:
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return &floatformat_ieee_double_little;
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default:
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internal_error (__FILE__, __LINE__,
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_("default_double_format: bad byte order"));
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}
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}
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/* Misc helper functions for targets. */
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CORE_ADDR
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core_addr_identity (CORE_ADDR addr)
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{
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return addr;
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}
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CORE_ADDR
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convert_from_func_ptr_addr_identity (struct gdbarch *gdbarch, CORE_ADDR addr,
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struct target_ops *targ)
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{
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return addr;
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}
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int
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no_op_reg_to_regnum (int reg)
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{
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return reg;
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}
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void
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default_elf_make_msymbol_special (asymbol *sym, struct minimal_symbol *msym)
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{
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return;
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}
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void
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default_coff_make_msymbol_special (int val, struct minimal_symbol *msym)
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{
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return;
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}
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int
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cannot_register_not (int regnum)
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{
|
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return 0;
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}
|
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|
||
/* Legacy version of target_virtual_frame_pointer(). Assumes that
|
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there is an DEPRECATED_FP_REGNUM and that it is the same, cooked or
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raw. */
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void
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legacy_virtual_frame_pointer (CORE_ADDR pc,
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int *frame_regnum,
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LONGEST *frame_offset)
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{
|
||
/* FIXME: cagney/2002-09-13: This code is used when identifying the
|
||
frame pointer of the current PC. It is assuming that a single
|
||
register and an offset can determine this. I think it should
|
||
instead generate a byte code expression as that would work better
|
||
with things like Dwarf2's CFI. */
|
||
if (DEPRECATED_FP_REGNUM >= 0 && DEPRECATED_FP_REGNUM < NUM_REGS)
|
||
*frame_regnum = DEPRECATED_FP_REGNUM;
|
||
else if (SP_REGNUM >= 0 && SP_REGNUM < NUM_REGS)
|
||
*frame_regnum = SP_REGNUM;
|
||
else
|
||
/* Should this be an internal error? I guess so, it is reflecting
|
||
an architectural limitation in the current design. */
|
||
internal_error (__FILE__, __LINE__, _("No virtual frame pointer available"));
|
||
*frame_offset = 0;
|
||
}
|
||
|
||
/* Assume the world is sane, every register's virtual and real size
|
||
is identical. */
|
||
|
||
int
|
||
generic_register_size (int regnum)
|
||
{
|
||
gdb_assert (regnum >= 0 && regnum < NUM_REGS + NUM_PSEUDO_REGS);
|
||
return TYPE_LENGTH (gdbarch_register_type (current_gdbarch, regnum));
|
||
}
|
||
|
||
/* Assume all registers are adjacent. */
|
||
|
||
int
|
||
generic_register_byte (int regnum)
|
||
{
|
||
int byte;
|
||
int i;
|
||
gdb_assert (regnum >= 0 && regnum < NUM_REGS + NUM_PSEUDO_REGS);
|
||
byte = 0;
|
||
for (i = 0; i < regnum; i++)
|
||
{
|
||
byte += generic_register_size (i);
|
||
}
|
||
return byte;
|
||
}
|
||
|
||
|
||
int
|
||
legacy_pc_in_sigtramp (CORE_ADDR pc, char *name)
|
||
{
|
||
#if defined (DEPRECATED_IN_SIGTRAMP)
|
||
return DEPRECATED_IN_SIGTRAMP (pc, name);
|
||
#else
|
||
return name && strcmp ("_sigtramp", name) == 0;
|
||
#endif
|
||
}
|
||
|
||
int
|
||
generic_convert_register_p (int regnum, struct type *type)
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
default_stabs_argument_has_addr (struct gdbarch *gdbarch, struct type *type)
|
||
{
|
||
if (DEPRECATED_REG_STRUCT_HAS_ADDR_P ()
|
||
&& DEPRECATED_REG_STRUCT_HAS_ADDR (processing_gcc_compilation, type))
|
||
{
|
||
CHECK_TYPEDEF (type);
|
||
|
||
return (TYPE_CODE (type) == TYPE_CODE_STRUCT
|
||
|| TYPE_CODE (type) == TYPE_CODE_UNION
|
||
|| TYPE_CODE (type) == TYPE_CODE_SET
|
||
|| TYPE_CODE (type) == TYPE_CODE_BITSTRING);
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
generic_instruction_nullified (struct gdbarch *gdbarch,
|
||
struct regcache *regcache)
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
|
||
/* Functions to manipulate the endianness of the target. */
|
||
|
||
/* ``target_byte_order'' is only used when non- multi-arch.
|
||
Multi-arch targets obtain the current byte order using the
|
||
TARGET_BYTE_ORDER gdbarch method.
|
||
|
||
The choice of initial value is entirely arbitrary. During startup,
|
||
the function initialize_current_architecture() updates this value
|
||
based on default byte-order information extracted from BFD. */
|
||
static int target_byte_order = BFD_ENDIAN_BIG;
|
||
static int target_byte_order_auto = 1;
|
||
|
||
enum bfd_endian
|
||
selected_byte_order (void)
|
||
{
|
||
if (target_byte_order_auto)
|
||
return BFD_ENDIAN_UNKNOWN;
|
||
else
|
||
return target_byte_order;
|
||
}
|
||
|
||
static const char endian_big[] = "big";
|
||
static const char endian_little[] = "little";
|
||
static const char endian_auto[] = "auto";
|
||
static const char *endian_enum[] =
|
||
{
|
||
endian_big,
|
||
endian_little,
|
||
endian_auto,
|
||
NULL,
|
||
};
|
||
static const char *set_endian_string;
|
||
|
||
/* Called by ``show endian''. */
|
||
|
||
static void
|
||
show_endian (struct ui_file *file, int from_tty, struct cmd_list_element *c,
|
||
const char *value)
|
||
{
|
||
if (target_byte_order_auto)
|
||
if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG)
|
||
fprintf_unfiltered (file, _("The target endianness is set automatically "
|
||
"(currently big endian)\n"));
|
||
else
|
||
fprintf_unfiltered (file, _("The target endianness is set automatically "
|
||
"(currently little endian)\n"));
|
||
else
|
||
if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG)
|
||
fprintf_unfiltered (file,
|
||
_("The target is assumed to be big endian\n"));
|
||
else
|
||
fprintf_unfiltered (file,
|
||
_("The target is assumed to be little endian\n"));
|
||
}
|
||
|
||
static void
|
||
set_endian (char *ignore_args, int from_tty, struct cmd_list_element *c)
|
||
{
|
||
if (set_endian_string == endian_auto)
|
||
{
|
||
target_byte_order_auto = 1;
|
||
}
|
||
else if (set_endian_string == endian_little)
|
||
{
|
||
struct gdbarch_info info;
|
||
target_byte_order_auto = 0;
|
||
gdbarch_info_init (&info);
|
||
info.byte_order = BFD_ENDIAN_LITTLE;
|
||
if (! gdbarch_update_p (info))
|
||
printf_unfiltered (_("Little endian target not supported by GDB\n"));
|
||
}
|
||
else if (set_endian_string == endian_big)
|
||
{
|
||
struct gdbarch_info info;
|
||
target_byte_order_auto = 0;
|
||
gdbarch_info_init (&info);
|
||
info.byte_order = BFD_ENDIAN_BIG;
|
||
if (! gdbarch_update_p (info))
|
||
printf_unfiltered (_("Big endian target not supported by GDB\n"));
|
||
}
|
||
else
|
||
internal_error (__FILE__, __LINE__,
|
||
_("set_endian: bad value"));
|
||
show_endian (gdb_stdout, from_tty, NULL, NULL);
|
||
}
|
||
|
||
/* Functions to manipulate the architecture of the target */
|
||
|
||
enum set_arch { set_arch_auto, set_arch_manual };
|
||
|
||
static int target_architecture_auto = 1;
|
||
|
||
static const char *set_architecture_string;
|
||
|
||
const char *
|
||
selected_architecture_name (void)
|
||
{
|
||
if (target_architecture_auto)
|
||
return NULL;
|
||
else
|
||
return set_architecture_string;
|
||
}
|
||
|
||
/* Called if the user enters ``show architecture'' without an
|
||
argument. */
|
||
|
||
static void
|
||
show_architecture (struct ui_file *file, int from_tty,
|
||
struct cmd_list_element *c, const char *value)
|
||
{
|
||
const char *arch;
|
||
arch = TARGET_ARCHITECTURE->printable_name;
|
||
if (target_architecture_auto)
|
||
fprintf_filtered (file, _("\
|
||
The target architecture is set automatically (currently %s)\n"), arch);
|
||
else
|
||
fprintf_filtered (file, _("\
|
||
The target architecture is assumed to be %s\n"), arch);
|
||
}
|
||
|
||
|
||
/* Called if the user enters ``set architecture'' with or without an
|
||
argument. */
|
||
|
||
static void
|
||
set_architecture (char *ignore_args, int from_tty, struct cmd_list_element *c)
|
||
{
|
||
if (strcmp (set_architecture_string, "auto") == 0)
|
||
{
|
||
target_architecture_auto = 1;
|
||
}
|
||
else
|
||
{
|
||
struct gdbarch_info info;
|
||
gdbarch_info_init (&info);
|
||
info.bfd_arch_info = bfd_scan_arch (set_architecture_string);
|
||
if (info.bfd_arch_info == NULL)
|
||
internal_error (__FILE__, __LINE__,
|
||
_("set_architecture: bfd_scan_arch failed"));
|
||
if (gdbarch_update_p (info))
|
||
target_architecture_auto = 0;
|
||
else
|
||
printf_unfiltered (_("Architecture `%s' not recognized.\n"),
|
||
set_architecture_string);
|
||
}
|
||
show_architecture (gdb_stdout, from_tty, NULL, NULL);
|
||
}
|
||
|
||
/* Try to select a global architecture that matches "info". Return
|
||
non-zero if the attempt succeds. */
|
||
int
|
||
gdbarch_update_p (struct gdbarch_info info)
|
||
{
|
||
struct gdbarch *new_gdbarch = gdbarch_find_by_info (info);
|
||
|
||
/* If there no architecture by that name, reject the request. */
|
||
if (new_gdbarch == NULL)
|
||
{
|
||
if (gdbarch_debug)
|
||
fprintf_unfiltered (gdb_stdlog, "gdbarch_update_p: "
|
||
"Architecture not found\n");
|
||
return 0;
|
||
}
|
||
|
||
/* If it is the same old architecture, accept the request (but don't
|
||
swap anything). */
|
||
if (new_gdbarch == current_gdbarch)
|
||
{
|
||
if (gdbarch_debug)
|
||
fprintf_unfiltered (gdb_stdlog, "gdbarch_update_p: "
|
||
"Architecture 0x%08lx (%s) unchanged\n",
|
||
(long) new_gdbarch,
|
||
gdbarch_bfd_arch_info (new_gdbarch)->printable_name);
|
||
return 1;
|
||
}
|
||
|
||
/* It's a new architecture, swap it in. */
|
||
if (gdbarch_debug)
|
||
fprintf_unfiltered (gdb_stdlog, "gdbarch_update_p: "
|
||
"New architecture 0x%08lx (%s) selected\n",
|
||
(long) new_gdbarch,
|
||
gdbarch_bfd_arch_info (new_gdbarch)->printable_name);
|
||
deprecated_current_gdbarch_select_hack (new_gdbarch);
|
||
|
||
return 1;
|
||
}
|
||
|
||
/* Return the architecture for ABFD. If no suitable architecture
|
||
could be find, return NULL. */
|
||
|
||
struct gdbarch *
|
||
gdbarch_from_bfd (bfd *abfd)
|
||
{
|
||
struct gdbarch *old_gdbarch = current_gdbarch;
|
||
struct gdbarch *new_gdbarch;
|
||
struct gdbarch_info info;
|
||
|
||
gdbarch_info_init (&info);
|
||
info.abfd = abfd;
|
||
return gdbarch_find_by_info (info);
|
||
}
|
||
|
||
/* Set the dynamic target-system-dependent parameters (architecture,
|
||
byte-order) using information found in the BFD */
|
||
|
||
void
|
||
set_gdbarch_from_file (bfd *abfd)
|
||
{
|
||
struct gdbarch *gdbarch;
|
||
|
||
gdbarch = gdbarch_from_bfd (abfd);
|
||
if (gdbarch == NULL)
|
||
error (_("Architecture of file not recognized."));
|
||
deprecated_current_gdbarch_select_hack (gdbarch);
|
||
}
|
||
|
||
/* Initialize the current architecture. Update the ``set
|
||
architecture'' command so that it specifies a list of valid
|
||
architectures. */
|
||
|
||
#ifdef DEFAULT_BFD_ARCH
|
||
extern const bfd_arch_info_type DEFAULT_BFD_ARCH;
|
||
static const bfd_arch_info_type *default_bfd_arch = &DEFAULT_BFD_ARCH;
|
||
#else
|
||
static const bfd_arch_info_type *default_bfd_arch;
|
||
#endif
|
||
|
||
#ifdef DEFAULT_BFD_VEC
|
||
extern const bfd_target DEFAULT_BFD_VEC;
|
||
static const bfd_target *default_bfd_vec = &DEFAULT_BFD_VEC;
|
||
#else
|
||
static const bfd_target *default_bfd_vec;
|
||
#endif
|
||
|
||
void
|
||
initialize_current_architecture (void)
|
||
{
|
||
const char **arches = gdbarch_printable_names ();
|
||
|
||
/* determine a default architecture and byte order. */
|
||
struct gdbarch_info info;
|
||
gdbarch_info_init (&info);
|
||
|
||
/* Find a default architecture. */
|
||
if (info.bfd_arch_info == NULL
|
||
&& default_bfd_arch != NULL)
|
||
info.bfd_arch_info = default_bfd_arch;
|
||
if (info.bfd_arch_info == NULL)
|
||
{
|
||
/* Choose the architecture by taking the first one
|
||
alphabetically. */
|
||
const char *chosen = arches[0];
|
||
const char **arch;
|
||
for (arch = arches; *arch != NULL; arch++)
|
||
{
|
||
if (strcmp (*arch, chosen) < 0)
|
||
chosen = *arch;
|
||
}
|
||
if (chosen == NULL)
|
||
internal_error (__FILE__, __LINE__,
|
||
_("initialize_current_architecture: No arch"));
|
||
info.bfd_arch_info = bfd_scan_arch (chosen);
|
||
if (info.bfd_arch_info == NULL)
|
||
internal_error (__FILE__, __LINE__,
|
||
_("initialize_current_architecture: Arch not found"));
|
||
}
|
||
|
||
/* Take several guesses at a byte order. */
|
||
if (info.byte_order == BFD_ENDIAN_UNKNOWN
|
||
&& default_bfd_vec != NULL)
|
||
{
|
||
/* Extract BFD's default vector's byte order. */
|
||
switch (default_bfd_vec->byteorder)
|
||
{
|
||
case BFD_ENDIAN_BIG:
|
||
info.byte_order = BFD_ENDIAN_BIG;
|
||
break;
|
||
case BFD_ENDIAN_LITTLE:
|
||
info.byte_order = BFD_ENDIAN_LITTLE;
|
||
break;
|
||
default:
|
||
break;
|
||
}
|
||
}
|
||
if (info.byte_order == BFD_ENDIAN_UNKNOWN)
|
||
{
|
||
/* look for ``*el-*'' in the target name. */
|
||
const char *chp;
|
||
chp = strchr (target_name, '-');
|
||
if (chp != NULL
|
||
&& chp - 2 >= target_name
|
||
&& strncmp (chp - 2, "el", 2) == 0)
|
||
info.byte_order = BFD_ENDIAN_LITTLE;
|
||
}
|
||
if (info.byte_order == BFD_ENDIAN_UNKNOWN)
|
||
{
|
||
/* Wire it to big-endian!!! */
|
||
info.byte_order = BFD_ENDIAN_BIG;
|
||
}
|
||
|
||
if (! gdbarch_update_p (info))
|
||
internal_error (__FILE__, __LINE__,
|
||
_("initialize_current_architecture: Selection of "
|
||
"initial architecture failed"));
|
||
|
||
/* Create the ``set architecture'' command appending ``auto'' to the
|
||
list of architectures. */
|
||
{
|
||
struct cmd_list_element *c;
|
||
/* Append ``auto''. */
|
||
int nr;
|
||
for (nr = 0; arches[nr] != NULL; nr++);
|
||
arches = xrealloc (arches, sizeof (char*) * (nr + 2));
|
||
arches[nr + 0] = "auto";
|
||
arches[nr + 1] = NULL;
|
||
add_setshow_enum_cmd ("architecture", class_support,
|
||
arches, &set_architecture_string, _("\
|
||
Set architecture of target."), _("\
|
||
Show architecture of target."), NULL,
|
||
set_architecture, show_architecture,
|
||
&setlist, &showlist);
|
||
add_alias_cmd ("processor", "architecture", class_support, 1, &setlist);
|
||
}
|
||
}
|
||
|
||
|
||
/* Initialize a gdbarch info to values that will be automatically
|
||
overridden. Note: Originally, this ``struct info'' was initialized
|
||
using memset(0). Unfortunately, that ran into problems, namely
|
||
BFD_ENDIAN_BIG is zero. An explicit initialization function that
|
||
can explicitly set each field to a well defined value is used. */
|
||
|
||
void
|
||
gdbarch_info_init (struct gdbarch_info *info)
|
||
{
|
||
memset (info, 0, sizeof (struct gdbarch_info));
|
||
info->byte_order = BFD_ENDIAN_UNKNOWN;
|
||
info->osabi = GDB_OSABI_UNINITIALIZED;
|
||
}
|
||
|
||
/* Similar to init, but this time fill in the blanks. Information is
|
||
obtained from the specified architecture, global "set ..." options,
|
||
and explicitly initialized INFO fields. */
|
||
|
||
void
|
||
gdbarch_info_fill (struct gdbarch *gdbarch, struct gdbarch_info *info)
|
||
{
|
||
/* "(gdb) set architecture ...". */
|
||
if (info->bfd_arch_info == NULL
|
||
&& !target_architecture_auto
|
||
&& gdbarch != NULL)
|
||
info->bfd_arch_info = gdbarch_bfd_arch_info (gdbarch);
|
||
if (info->bfd_arch_info == NULL
|
||
&& info->abfd != NULL
|
||
&& bfd_get_arch (info->abfd) != bfd_arch_unknown
|
||
&& bfd_get_arch (info->abfd) != bfd_arch_obscure)
|
||
info->bfd_arch_info = bfd_get_arch_info (info->abfd);
|
||
if (info->bfd_arch_info == NULL
|
||
&& gdbarch != NULL)
|
||
info->bfd_arch_info = gdbarch_bfd_arch_info (gdbarch);
|
||
|
||
/* "(gdb) set byte-order ...". */
|
||
if (info->byte_order == BFD_ENDIAN_UNKNOWN
|
||
&& !target_byte_order_auto
|
||
&& gdbarch != NULL)
|
||
info->byte_order = gdbarch_byte_order (gdbarch);
|
||
/* From the INFO struct. */
|
||
if (info->byte_order == BFD_ENDIAN_UNKNOWN
|
||
&& info->abfd != NULL)
|
||
info->byte_order = (bfd_big_endian (info->abfd) ? BFD_ENDIAN_BIG
|
||
: bfd_little_endian (info->abfd) ? BFD_ENDIAN_LITTLE
|
||
: BFD_ENDIAN_UNKNOWN);
|
||
/* From the current target. */
|
||
if (info->byte_order == BFD_ENDIAN_UNKNOWN
|
||
&& gdbarch != NULL)
|
||
info->byte_order = gdbarch_byte_order (gdbarch);
|
||
|
||
/* "(gdb) set osabi ...". Handled by gdbarch_lookup_osabi. */
|
||
if (info->osabi == GDB_OSABI_UNINITIALIZED)
|
||
info->osabi = gdbarch_lookup_osabi (info->abfd);
|
||
if (info->osabi == GDB_OSABI_UNINITIALIZED
|
||
&& gdbarch != NULL)
|
||
info->osabi = gdbarch_osabi (gdbarch);
|
||
|
||
/* Must have at least filled in the architecture. */
|
||
gdb_assert (info->bfd_arch_info != NULL);
|
||
}
|
||
|
||
/* */
|
||
|
||
extern initialize_file_ftype _initialize_gdbarch_utils; /* -Wmissing-prototypes */
|
||
|
||
void
|
||
_initialize_gdbarch_utils (void)
|
||
{
|
||
struct cmd_list_element *c;
|
||
add_setshow_enum_cmd ("endian", class_support,
|
||
endian_enum, &set_endian_string, _("\
|
||
Set endianness of target."), _("\
|
||
Show endianness of target."), NULL,
|
||
set_endian, show_endian,
|
||
&setlist, &showlist);
|
||
}
|