mirror/binutils-gdb
2
0
Fork 0
mirror of https://sourceware.org/git/binutils-gdb.git synced 2024-12-09 04:21:49 +08:00
Code Issues Packages Projects Releases Wiki Activity
8e96694e31
binutils-gdb/gdb/amd64obsd-tdep.c
Tom Tromey 0e9f083f4c remove gdb_string.h 
This removes gdb_string.h.  This patch is purely mechanical.  I
created it by running the two commands:

    git rm common/gdb_string.h
    perl -pi -e's/"gdb_string.h"/<string.h>/;'  *.[chyl] */*.[chyl]

2013-11-18  Tom Tromey  <tromey@redhat.com>

	* common/gdb_string.h: Remove.
	* aarch64-tdep.c: Use string.h, not gdb_string.h.
	* ada-exp.y: Use string.h, not gdb_string.h.
	* ada-lang.c: Use string.h, not gdb_string.h.
	* ada-lex.l: Use string.h, not gdb_string.h.
	* ada-typeprint.c: Use string.h, not gdb_string.h.
	* ada-valprint.c: Use string.h, not gdb_string.h.
	* aix-thread.c: Use string.h, not gdb_string.h.
	* alpha-linux-tdep.c: Use string.h, not gdb_string.h.
	* alpha-mdebug-tdep.c: Use string.h, not gdb_string.h.
	* alpha-nat.c: Use string.h, not gdb_string.h.
	* alpha-osf1-tdep.c: Use string.h, not gdb_string.h.
	* alpha-tdep.c: Use string.h, not gdb_string.h.
	* alphanbsd-tdep.c: Use string.h, not gdb_string.h.
	* amd64-dicos-tdep.c: Use string.h, not gdb_string.h.
	* amd64-linux-nat.c: Use string.h, not gdb_string.h.
	* amd64-linux-tdep.c: Use string.h, not gdb_string.h.
	* amd64-nat.c: Use string.h, not gdb_string.h.
	* amd64-sol2-tdep.c: Use string.h, not gdb_string.h.
	* amd64fbsd-tdep.c: Use string.h, not gdb_string.h.
	* amd64obsd-tdep.c: Use string.h, not gdb_string.h.
	* arch-utils.c: Use string.h, not gdb_string.h.
	* arm-linux-nat.c: Use string.h, not gdb_string.h.
	* arm-linux-tdep.c: Use string.h, not gdb_string.h.
	* arm-tdep.c: Use string.h, not gdb_string.h.
	* arm-wince-tdep.c: Use string.h, not gdb_string.h.
	* armbsd-tdep.c: Use string.h, not gdb_string.h.
	* armnbsd-nat.c: Use string.h, not gdb_string.h.
	* armnbsd-tdep.c: Use string.h, not gdb_string.h.
	* armobsd-tdep.c: Use string.h, not gdb_string.h.
	* avr-tdep.c: Use string.h, not gdb_string.h.
	* ax-gdb.c: Use string.h, not gdb_string.h.
	* ax-general.c: Use string.h, not gdb_string.h.
	* bcache.c: Use string.h, not gdb_string.h.
	* bfin-tdep.c: Use string.h, not gdb_string.h.
	* breakpoint.c: Use string.h, not gdb_string.h.
	* build-id.c: Use string.h, not gdb_string.h.
	* buildsym.c: Use string.h, not gdb_string.h.
	* c-exp.y: Use string.h, not gdb_string.h.
	* c-lang.c: Use string.h, not gdb_string.h.
	* c-typeprint.c: Use string.h, not gdb_string.h.
	* c-valprint.c: Use string.h, not gdb_string.h.
	* charset.c: Use string.h, not gdb_string.h.
	* cli-out.c: Use string.h, not gdb_string.h.
	* cli/cli-cmds.c: Use string.h, not gdb_string.h.
	* cli/cli-decode.c: Use string.h, not gdb_string.h.
	* cli/cli-dump.c: Use string.h, not gdb_string.h.
	* cli/cli-interp.c: Use string.h, not gdb_string.h.
	* cli/cli-logging.c: Use string.h, not gdb_string.h.
	* cli/cli-script.c: Use string.h, not gdb_string.h.
	* cli/cli-setshow.c: Use string.h, not gdb_string.h.
	* cli/cli-utils.c: Use string.h, not gdb_string.h.
	* coffread.c: Use string.h, not gdb_string.h.
	* common/common-utils.c: Use string.h, not gdb_string.h.
	* common/filestuff.c: Use string.h, not gdb_string.h.
	* common/linux-procfs.c: Use string.h, not gdb_string.h.
	* common/linux-ptrace.c: Use string.h, not gdb_string.h.
	* common/signals.c: Use string.h, not gdb_string.h.
	* common/vec.h: Use string.h, not gdb_string.h.
	* core-regset.c: Use string.h, not gdb_string.h.
	* corefile.c: Use string.h, not gdb_string.h.
	* corelow.c: Use string.h, not gdb_string.h.
	* cp-abi.c: Use string.h, not gdb_string.h.
	* cp-support.c: Use string.h, not gdb_string.h.
	* cp-valprint.c: Use string.h, not gdb_string.h.
	* cris-tdep.c: Use string.h, not gdb_string.h.
	* d-lang.c: Use string.h, not gdb_string.h.
	* dbxread.c: Use string.h, not gdb_string.h.
	* dcache.c: Use string.h, not gdb_string.h.
	* demangle.c: Use string.h, not gdb_string.h.
	* dicos-tdep.c: Use string.h, not gdb_string.h.
	* disasm.c: Use string.h, not gdb_string.h.
	* doublest.c: Use string.h, not gdb_string.h.
	* dsrec.c: Use string.h, not gdb_string.h.
	* dummy-frame.c: Use string.h, not gdb_string.h.
	* dwarf2-frame.c: Use string.h, not gdb_string.h.
	* dwarf2loc.c: Use string.h, not gdb_string.h.
	* dwarf2read.c: Use string.h, not gdb_string.h.
	* elfread.c: Use string.h, not gdb_string.h.
	* environ.c: Use string.h, not gdb_string.h.
	* eval.c: Use string.h, not gdb_string.h.
	* event-loop.c: Use string.h, not gdb_string.h.
	* exceptions.c: Use string.h, not gdb_string.h.
	* exec.c: Use string.h, not gdb_string.h.
	* expprint.c: Use string.h, not gdb_string.h.
	* f-exp.y: Use string.h, not gdb_string.h.
	* f-lang.c: Use string.h, not gdb_string.h.
	* f-typeprint.c: Use string.h, not gdb_string.h.
	* f-valprint.c: Use string.h, not gdb_string.h.
	* fbsd-nat.c: Use string.h, not gdb_string.h.
	* findcmd.c: Use string.h, not gdb_string.h.
	* findvar.c: Use string.h, not gdb_string.h.
	* fork-child.c: Use string.h, not gdb_string.h.
	* frame.c: Use string.h, not gdb_string.h.
	* frv-linux-tdep.c: Use string.h, not gdb_string.h.
	* frv-tdep.c: Use string.h, not gdb_string.h.
	* gdb.c: Use string.h, not gdb_string.h.
	* gdb_bfd.c: Use string.h, not gdb_string.h.
	* gdbarch.c: Use string.h, not gdb_string.h.
	* gdbtypes.c: Use string.h, not gdb_string.h.
	* gnu-nat.c: Use string.h, not gdb_string.h.
	* gnu-v2-abi.c: Use string.h, not gdb_string.h.
	* gnu-v3-abi.c: Use string.h, not gdb_string.h.
	* go-exp.y: Use string.h, not gdb_string.h.
	* go-lang.c: Use string.h, not gdb_string.h.
	* go32-nat.c: Use string.h, not gdb_string.h.
	* hppa-hpux-tdep.c: Use string.h, not gdb_string.h.
	* hppa-linux-nat.c: Use string.h, not gdb_string.h.
	* hppanbsd-tdep.c: Use string.h, not gdb_string.h.
	* hppaobsd-tdep.c: Use string.h, not gdb_string.h.
	* i386-cygwin-tdep.c: Use string.h, not gdb_string.h.
	* i386-dicos-tdep.c: Use string.h, not gdb_string.h.
	* i386-linux-nat.c: Use string.h, not gdb_string.h.
	* i386-linux-tdep.c: Use string.h, not gdb_string.h.
	* i386-nto-tdep.c: Use string.h, not gdb_string.h.
	* i386-sol2-tdep.c: Use string.h, not gdb_string.h.
	* i386-tdep.c: Use string.h, not gdb_string.h.
	* i386bsd-tdep.c: Use string.h, not gdb_string.h.
	* i386gnu-nat.c: Use string.h, not gdb_string.h.
	* i386nbsd-tdep.c: Use string.h, not gdb_string.h.
	* i386obsd-tdep.c: Use string.h, not gdb_string.h.
	* i387-tdep.c: Use string.h, not gdb_string.h.
	* ia64-libunwind-tdep.c: Use string.h, not gdb_string.h.
	* ia64-linux-nat.c: Use string.h, not gdb_string.h.
	* inf-child.c: Use string.h, not gdb_string.h.
	* inf-ptrace.c: Use string.h, not gdb_string.h.
	* inf-ttrace.c: Use string.h, not gdb_string.h.
	* infcall.c: Use string.h, not gdb_string.h.
	* infcmd.c: Use string.h, not gdb_string.h.
	* inflow.c: Use string.h, not gdb_string.h.
	* infrun.c: Use string.h, not gdb_string.h.
	* interps.c: Use string.h, not gdb_string.h.
	* iq2000-tdep.c: Use string.h, not gdb_string.h.
	* irix5-nat.c: Use string.h, not gdb_string.h.
	* jv-exp.y: Use string.h, not gdb_string.h.
	* jv-lang.c: Use string.h, not gdb_string.h.
	* jv-typeprint.c: Use string.h, not gdb_string.h.
	* jv-valprint.c: Use string.h, not gdb_string.h.
	* language.c: Use string.h, not gdb_string.h.
	* linux-fork.c: Use string.h, not gdb_string.h.
	* linux-nat.c: Use string.h, not gdb_string.h.
	* lm32-tdep.c: Use string.h, not gdb_string.h.
	* m2-exp.y: Use string.h, not gdb_string.h.
	* m2-typeprint.c: Use string.h, not gdb_string.h.
	* m32c-tdep.c: Use string.h, not gdb_string.h.
	* m32r-linux-nat.c: Use string.h, not gdb_string.h.
	* m32r-linux-tdep.c: Use string.h, not gdb_string.h.
	* m32r-rom.c: Use string.h, not gdb_string.h.
	* m32r-tdep.c: Use string.h, not gdb_string.h.
	* m68hc11-tdep.c: Use string.h, not gdb_string.h.
	* m68k-tdep.c: Use string.h, not gdb_string.h.
	* m68kbsd-tdep.c: Use string.h, not gdb_string.h.
	* m68klinux-nat.c: Use string.h, not gdb_string.h.
	* m68klinux-tdep.c: Use string.h, not gdb_string.h.
	* m88k-tdep.c: Use string.h, not gdb_string.h.
	* macrocmd.c: Use string.h, not gdb_string.h.
	* main.c: Use string.h, not gdb_string.h.
	* mdebugread.c: Use string.h, not gdb_string.h.
	* mem-break.c: Use string.h, not gdb_string.h.
	* memattr.c: Use string.h, not gdb_string.h.
	* memory-map.c: Use string.h, not gdb_string.h.
	* mep-tdep.c: Use string.h, not gdb_string.h.
	* mi/mi-cmd-break.c: Use string.h, not gdb_string.h.
	* mi/mi-cmd-disas.c: Use string.h, not gdb_string.h.
	* mi/mi-cmd-env.c: Use string.h, not gdb_string.h.
	* mi/mi-cmd-stack.c: Use string.h, not gdb_string.h.
	* mi/mi-cmd-var.c: Use string.h, not gdb_string.h.
	* mi/mi-cmds.c: Use string.h, not gdb_string.h.
	* mi/mi-console.c: Use string.h, not gdb_string.h.
	* mi/mi-getopt.c: Use string.h, not gdb_string.h.
	* mi/mi-interp.c: Use string.h, not gdb_string.h.
	* mi/mi-main.c: Use string.h, not gdb_string.h.
	* mi/mi-parse.c: Use string.h, not gdb_string.h.
	* microblaze-rom.c: Use string.h, not gdb_string.h.
	* microblaze-tdep.c: Use string.h, not gdb_string.h.
	* mingw-hdep.c: Use string.h, not gdb_string.h.
	* minidebug.c: Use string.h, not gdb_string.h.
	* minsyms.c: Use string.h, not gdb_string.h.
	* mips-irix-tdep.c: Use string.h, not gdb_string.h.
	* mips-linux-tdep.c: Use string.h, not gdb_string.h.
	* mips-tdep.c: Use string.h, not gdb_string.h.
	* mips64obsd-tdep.c: Use string.h, not gdb_string.h.
	* mipsnbsd-tdep.c: Use string.h, not gdb_string.h.
	* mipsread.c: Use string.h, not gdb_string.h.
	* mn10300-linux-tdep.c: Use string.h, not gdb_string.h.
	* mn10300-tdep.c: Use string.h, not gdb_string.h.
	* monitor.c: Use string.h, not gdb_string.h.
	* moxie-tdep.c: Use string.h, not gdb_string.h.
	* mt-tdep.c: Use string.h, not gdb_string.h.
	* nbsd-tdep.c: Use string.h, not gdb_string.h.
	* nios2-linux-tdep.c: Use string.h, not gdb_string.h.
	* nto-procfs.c: Use string.h, not gdb_string.h.
	* nto-tdep.c: Use string.h, not gdb_string.h.
	* objc-lang.c: Use string.h, not gdb_string.h.
	* objfiles.c: Use string.h, not gdb_string.h.
	* opencl-lang.c: Use string.h, not gdb_string.h.
	* osabi.c: Use string.h, not gdb_string.h.
	* osdata.c: Use string.h, not gdb_string.h.
	* p-exp.y: Use string.h, not gdb_string.h.
	* p-lang.c: Use string.h, not gdb_string.h.
	* p-typeprint.c: Use string.h, not gdb_string.h.
	* parse.c: Use string.h, not gdb_string.h.
	* posix-hdep.c: Use string.h, not gdb_string.h.
	* ppc-linux-nat.c: Use string.h, not gdb_string.h.
	* ppc-sysv-tdep.c: Use string.h, not gdb_string.h.
	* ppcfbsd-tdep.c: Use string.h, not gdb_string.h.
	* ppcnbsd-tdep.c: Use string.h, not gdb_string.h.
	* ppcobsd-tdep.c: Use string.h, not gdb_string.h.
	* printcmd.c: Use string.h, not gdb_string.h.
	* procfs.c: Use string.h, not gdb_string.h.
	* prologue-value.c: Use string.h, not gdb_string.h.
	* python/py-auto-load.c: Use string.h, not gdb_string.h.
	* python/py-gdb-readline.c: Use string.h, not gdb_string.h.
	* ravenscar-thread.c: Use string.h, not gdb_string.h.
	* regcache.c: Use string.h, not gdb_string.h.
	* registry.c: Use string.h, not gdb_string.h.
	* remote-fileio.c: Use string.h, not gdb_string.h.
	* remote-m32r-sdi.c: Use string.h, not gdb_string.h.
	* remote-mips.c: Use string.h, not gdb_string.h.
	* remote-sim.c: Use string.h, not gdb_string.h.
	* remote.c: Use string.h, not gdb_string.h.
	* reverse.c: Use string.h, not gdb_string.h.
	* rs6000-aix-tdep.c: Use string.h, not gdb_string.h.
	* ser-base.c: Use string.h, not gdb_string.h.
	* ser-go32.c: Use string.h, not gdb_string.h.
	* ser-mingw.c: Use string.h, not gdb_string.h.
	* ser-pipe.c: Use string.h, not gdb_string.h.
	* ser-tcp.c: Use string.h, not gdb_string.h.
	* ser-unix.c: Use string.h, not gdb_string.h.
	* serial.c: Use string.h, not gdb_string.h.
	* sh-tdep.c: Use string.h, not gdb_string.h.
	* sh64-tdep.c: Use string.h, not gdb_string.h.
	* shnbsd-tdep.c: Use string.h, not gdb_string.h.
	* skip.c: Use string.h, not gdb_string.h.
	* sol-thread.c: Use string.h, not gdb_string.h.
	* solib-dsbt.c: Use string.h, not gdb_string.h.
	* solib-frv.c: Use string.h, not gdb_string.h.
	* solib-osf.c: Use string.h, not gdb_string.h.
	* solib-spu.c: Use string.h, not gdb_string.h.
	* solib-target.c: Use string.h, not gdb_string.h.
	* solib.c: Use string.h, not gdb_string.h.
	* somread.c: Use string.h, not gdb_string.h.
	* source.c: Use string.h, not gdb_string.h.
	* sparc-nat.c: Use string.h, not gdb_string.h.
	* sparc-sol2-tdep.c: Use string.h, not gdb_string.h.
	* sparc-tdep.c: Use string.h, not gdb_string.h.
	* sparc64-tdep.c: Use string.h, not gdb_string.h.
	* sparc64fbsd-tdep.c: Use string.h, not gdb_string.h.
	* sparc64nbsd-tdep.c: Use string.h, not gdb_string.h.
	* sparcnbsd-tdep.c: Use string.h, not gdb_string.h.
	* spu-linux-nat.c: Use string.h, not gdb_string.h.
	* spu-multiarch.c: Use string.h, not gdb_string.h.
	* spu-tdep.c: Use string.h, not gdb_string.h.
	* stabsread.c: Use string.h, not gdb_string.h.
	* stack.c: Use string.h, not gdb_string.h.
	* std-regs.c: Use string.h, not gdb_string.h.
	* symfile.c: Use string.h, not gdb_string.h.
	* symmisc.c: Use string.h, not gdb_string.h.
	* symtab.c: Use string.h, not gdb_string.h.
	* target.c: Use string.h, not gdb_string.h.
	* thread.c: Use string.h, not gdb_string.h.
	* tilegx-linux-nat.c: Use string.h, not gdb_string.h.
	* tilegx-tdep.c: Use string.h, not gdb_string.h.
	* top.c: Use string.h, not gdb_string.h.
	* tracepoint.c: Use string.h, not gdb_string.h.
	* tui/tui-command.c: Use string.h, not gdb_string.h.
	* tui/tui-data.c: Use string.h, not gdb_string.h.
	* tui/tui-disasm.c: Use string.h, not gdb_string.h.
	* tui/tui-file.c: Use string.h, not gdb_string.h.
	* tui/tui-layout.c: Use string.h, not gdb_string.h.
	* tui/tui-out.c: Use string.h, not gdb_string.h.
	* tui/tui-regs.c: Use string.h, not gdb_string.h.
	* tui/tui-source.c: Use string.h, not gdb_string.h.
	* tui/tui-stack.c: Use string.h, not gdb_string.h.
	* tui/tui-win.c: Use string.h, not gdb_string.h.
	* tui/tui-windata.c: Use string.h, not gdb_string.h.
	* tui/tui-winsource.c: Use string.h, not gdb_string.h.
	* typeprint.c: Use string.h, not gdb_string.h.
	* ui-file.c: Use string.h, not gdb_string.h.
	* ui-out.c: Use string.h, not gdb_string.h.
	* user-regs.c: Use string.h, not gdb_string.h.
	* utils.c: Use string.h, not gdb_string.h.
	* v850-tdep.c: Use string.h, not gdb_string.h.
	* valarith.c: Use string.h, not gdb_string.h.
	* valops.c: Use string.h, not gdb_string.h.
	* valprint.c: Use string.h, not gdb_string.h.
	* value.c: Use string.h, not gdb_string.h.
	* varobj.c: Use string.h, not gdb_string.h.
	* vax-tdep.c: Use string.h, not gdb_string.h.
	* vaxnbsd-tdep.c: Use string.h, not gdb_string.h.
	* vaxobsd-tdep.c: Use string.h, not gdb_string.h.
	* windows-nat.c: Use string.h, not gdb_string.h.
	* xcoffread.c: Use string.h, not gdb_string.h.
	* xml-support.c: Use string.h, not gdb_string.h.
	* xstormy16-tdep.c: Use string.h, not gdb_string.h.
	* xtensa-linux-nat.c: Use string.h, not gdb_string.h.
2013-11-18 13:29:00 -07:00

515 lines
14 KiB
C
Raw Blame History

This file contains invisible Unicode characters

This file contains invisible Unicode characters that are indistinguishable to humans but may be processed differently by a computer. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

/* Target-dependent code for OpenBSD/amd64.
Copyright (C) 2003-2013 Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
#include "frame.h"
#include "frame-unwind.h"
#include "gdbcore.h"
#include "symtab.h"
#include "objfiles.h"
#include "osabi.h"
#include "regcache.h"
#include "regset.h"
#include "target.h"
#include "trad-frame.h"
#include "gdb_assert.h"
#include <string.h>
#include "amd64-tdep.h"
#include "i387-tdep.h"
#include "solib-svr4.h"
#include "bsd-uthread.h"
/* Support for core dumps. */
static void
amd64obsd_supply_regset (const struct regset *regset,
struct regcache *regcache, int regnum,
const void *regs, size_t len)
{
const struct gdbarch_tdep *tdep = gdbarch_tdep (regset->arch);
gdb_assert (len >= tdep->sizeof_gregset + I387_SIZEOF_FXSAVE);
i386_supply_gregset (regset, regcache, regnum, regs, tdep->sizeof_gregset);
amd64_supply_fxsave (regcache, regnum,
((const gdb_byte *)regs) + tdep->sizeof_gregset);
}
static const struct regset *
amd64obsd_regset_from_core_section (struct gdbarch *gdbarch,
const char *sect_name, size_t sect_size)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
/* OpenBSD core dumps don't use seperate register sets for the
general-purpose and floating-point registers. */
if (strcmp (sect_name, ".reg") == 0
&& sect_size >= tdep->sizeof_gregset + I387_SIZEOF_FXSAVE)
{
if (tdep->gregset == NULL)
tdep->gregset = regset_alloc (gdbarch, amd64obsd_supply_regset, NULL);
return tdep->gregset;
}
return NULL;
}
/* Support for signal handlers. */
/* Default page size. */
static const int amd64obsd_page_size = 4096;
/* Return whether THIS_FRAME corresponds to an OpenBSD sigtramp
routine. */
static int
amd64obsd_sigtramp_p (struct frame_info *this_frame)
{
CORE_ADDR pc = get_frame_pc (this_frame);
CORE_ADDR start_pc = (pc & ~(amd64obsd_page_size - 1));
const gdb_byte osigreturn[] =
{
0x48, 0xc7, 0xc0,
0x67, 0x00, 0x00, 0x00, /* movq $SYS_sigreturn, %rax */
0xcd, 0x80 /* int $0x80 */
};
const gdb_byte sigreturn[] =
{
0x48, 0xc7, 0xc0,
0x67, 0x00, 0x00, 0x00, /* movq $SYS_sigreturn, %rax */
0x0f, 0x05 /* syscall */
};
size_t buflen = (sizeof sigreturn) + 1;
gdb_byte *buf;
const char *name;
/* If the function has a valid symbol name, it isn't a
trampoline. */
find_pc_partial_function (pc, &name, NULL, NULL);
if (name != NULL)
return 0;
/* If the function lives in a valid section (even without a starting
point) it isn't a trampoline. */
if (find_pc_section (pc) != NULL)
return 0;
/* If we can't read the instructions at START_PC, return zero. */
buf = alloca ((sizeof sigreturn) + 1);
if (!safe_frame_unwind_memory (this_frame, start_pc + 6, buf, buflen))
return 0;
/* Check for sigreturn(2). Depending on how the assembler encoded
the `movq %rsp, %rdi' instruction, the code starts at offset 6 or
7. OpenBSD 5.0 and later use the `syscall' instruction. Older
versions use `int $0x80'. Check for both. */
if (memcmp (buf, sigreturn, sizeof sigreturn)
&& memcmp (buf + 1, sigreturn, sizeof sigreturn)
&& memcmp (buf, osigreturn, sizeof osigreturn)
&& memcmp (buf + 1, osigreturn, sizeof osigreturn))
return 0;
return 1;
}
/* Assuming THIS_FRAME is for a BSD sigtramp routine, return the
address of the associated sigcontext structure. */
static CORE_ADDR
amd64obsd_sigcontext_addr (struct frame_info *this_frame)
{
CORE_ADDR pc = get_frame_pc (this_frame);
ULONGEST offset = (pc & (amd64obsd_page_size - 1));
/* The %rsp register points at `struct sigcontext' upon entry of a
signal trampoline. The relevant part of the trampoline is
call *%rax
movq %rsp, %rdi
pushq %rdi
movq $SYS_sigreturn,%rax
int $0x80
(see /usr/src/sys/arch/amd64/amd64/locore.S). The `pushq'
instruction clobbers %rsp, but its value is saved in `%rdi'. */
if (offset > 5)
return get_frame_register_unsigned (this_frame, AMD64_RDI_REGNUM);
else
return get_frame_register_unsigned (this_frame, AMD64_RSP_REGNUM);
}
/* OpenBSD 3.5 or later. */
/* Mapping between the general-purpose registers in `struct reg'
format and GDB's register cache layout. */
/* From <machine/reg.h>. */
int amd64obsd_r_reg_offset[] =
{
14 * 8, /* %rax */
13 * 8, /* %rbx */
3 * 8, /* %rcx */
2 * 8, /* %rdx */
1 * 8, /* %rsi */
0 * 8, /* %rdi */
12 * 8, /* %rbp */
15 * 8, /* %rsp */
4 * 8, /* %r8 .. */
5 * 8,
6 * 8,
7 * 8,
8 * 8,
9 * 8,
10 * 8,
11 * 8, /* ... %r15 */
16 * 8, /* %rip */
17 * 8, /* %eflags */
18 * 8, /* %cs */
19 * 8, /* %ss */
20 * 8, /* %ds */
21 * 8, /* %es */
22 * 8, /* %fs */
23 * 8 /* %gs */
};
/* From <machine/signal.h>. */
static int amd64obsd_sc_reg_offset[] =
{
14 * 8, /* %rax */
13 * 8, /* %rbx */
3 * 8, /* %rcx */
2 * 8, /* %rdx */
1 * 8, /* %rsi */
0 * 8, /* %rdi */
12 * 8, /* %rbp */
24 * 8, /* %rsp */
4 * 8, /* %r8 ... */
5 * 8,
6 * 8,
7 * 8,
8 * 8,
9 * 8,
10 * 8,
11 * 8, /* ... %r15 */
21 * 8, /* %rip */
23 * 8, /* %eflags */
22 * 8, /* %cs */
25 * 8, /* %ss */
18 * 8, /* %ds */
17 * 8, /* %es */
16 * 8, /* %fs */
15 * 8 /* %gs */
};
/* From /usr/src/lib/libpthread/arch/amd64/uthread_machdep.c. */
static int amd64obsd_uthread_reg_offset[] =
{
19 * 8, /* %rax */
16 * 8, /* %rbx */
18 * 8, /* %rcx */
17 * 8, /* %rdx */
14 * 8, /* %rsi */
13 * 8, /* %rdi */
15 * 8, /* %rbp */
-1, /* %rsp */
12 * 8, /* %r8 ... */
11 * 8,
10 * 8,
9 * 8,
8 * 8,
7 * 8,
6 * 8,
5 * 8, /* ... %r15 */
20 * 8, /* %rip */
4 * 8, /* %eflags */
21 * 8, /* %cs */
-1, /* %ss */
3 * 8, /* %ds */
2 * 8, /* %es */
1 * 8, /* %fs */
0 * 8 /* %gs */
};
/* Offset within the thread structure where we can find the saved
stack pointer (%esp). */
#define AMD64OBSD_UTHREAD_RSP_OFFSET 400
static void
amd64obsd_supply_uthread (struct regcache *regcache,
int regnum, CORE_ADDR addr)
{
struct gdbarch *gdbarch = get_regcache_arch (regcache);
enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
CORE_ADDR sp_addr = addr + AMD64OBSD_UTHREAD_RSP_OFFSET;
CORE_ADDR sp = 0;
gdb_byte buf[8];
int i;
gdb_assert (regnum >= -1);
if (regnum == -1 || regnum == AMD64_RSP_REGNUM)
{
int offset;
/* Fetch stack pointer from thread structure. */
sp = read_memory_unsigned_integer (sp_addr, 8, byte_order);
/* Adjust the stack pointer such that it looks as if we just
returned from _thread_machdep_switch. */
offset = amd64obsd_uthread_reg_offset[AMD64_RIP_REGNUM] + 8;
store_unsigned_integer (buf, 8, byte_order, sp + offset);
regcache_raw_supply (regcache, AMD64_RSP_REGNUM, buf);
}
for (i = 0; i < ARRAY_SIZE (amd64obsd_uthread_reg_offset); i++)
{
if (amd64obsd_uthread_reg_offset[i] != -1
&& (regnum == -1 || regnum == i))
{
/* Fetch stack pointer from thread structure (if we didn't
do so already). */
if (sp == 0)
sp = read_memory_unsigned_integer (sp_addr, 8, byte_order);
/* Read the saved register from the stack frame. */
read_memory (sp + amd64obsd_uthread_reg_offset[i], buf, 8);
regcache_raw_supply (regcache, i, buf);
}
}
}
static void
amd64obsd_collect_uthread (const struct regcache *regcache,
int regnum, CORE_ADDR addr)
{
struct gdbarch *gdbarch = get_regcache_arch (regcache);
enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
CORE_ADDR sp_addr = addr + AMD64OBSD_UTHREAD_RSP_OFFSET;
CORE_ADDR sp = 0;
gdb_byte buf[8];
int i;
gdb_assert (regnum >= -1);
if (regnum == -1 || regnum == AMD64_RSP_REGNUM)
{
int offset;
/* Calculate the stack pointer (frame pointer) that will be
stored into the thread structure. */
offset = amd64obsd_uthread_reg_offset[AMD64_RIP_REGNUM] + 8;
regcache_raw_collect (regcache, AMD64_RSP_REGNUM, buf);
sp = extract_unsigned_integer (buf, 8, byte_order) - offset;
/* Store the stack pointer. */
write_memory_unsigned_integer (sp_addr, 8, byte_order, sp);
/* The stack pointer was (potentially) modified. Make sure we
build a proper stack frame. */
regnum = -1;
}
for (i = 0; i < ARRAY_SIZE (amd64obsd_uthread_reg_offset); i++)
{
if (amd64obsd_uthread_reg_offset[i] != -1
&& (regnum == -1 || regnum == i))
{
/* Fetch stack pointer from thread structure (if we didn't
calculate it already). */
if (sp == 0)
sp = read_memory_unsigned_integer (sp_addr, 8, byte_order);
/* Write the register into the stack frame. */
regcache_raw_collect (regcache, i, buf);
write_memory (sp + amd64obsd_uthread_reg_offset[i], buf, 8);
}
}
}
/* Kernel debugging support. */
/* From <machine/frame.h>. Easy since `struct trapframe' matches
`struct sigcontext'. */
#define amd64obsd_tf_reg_offset amd64obsd_sc_reg_offset
static struct trad_frame_cache *
amd64obsd_trapframe_cache (struct frame_info *this_frame, void **this_cache)
{
struct gdbarch *gdbarch = get_frame_arch (this_frame);
enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
struct trad_frame_cache *cache;
CORE_ADDR func, sp, addr;
ULONGEST cs;
const char *name;
int i;
if (*this_cache)
return *this_cache;
cache = trad_frame_cache_zalloc (this_frame);
*this_cache = cache;
func = get_frame_func (this_frame);
sp = get_frame_register_unsigned (this_frame, AMD64_RSP_REGNUM);
find_pc_partial_function (func, &name, NULL, NULL);
if (name && strncmp (name, "Xintr", 5) == 0)
addr = sp + 8; /* It's an interrupt frame. */
else
addr = sp;
for (i = 0; i < ARRAY_SIZE (amd64obsd_tf_reg_offset); i++)
if (amd64obsd_tf_reg_offset[i] != -1)
trad_frame_set_reg_addr (cache, i, addr + amd64obsd_tf_reg_offset[i]);
/* Read %cs from trap frame. */
addr += amd64obsd_tf_reg_offset[AMD64_CS_REGNUM];
cs = read_memory_unsigned_integer (addr, 8, byte_order);
if ((cs & I386_SEL_RPL) == I386_SEL_UPL)
{
/* Trap from user space; terminate backtrace. */
trad_frame_set_id (cache, outer_frame_id);
}
else
{
/* Construct the frame ID using the function start. */
trad_frame_set_id (cache, frame_id_build (sp + 16, func));
}
return cache;
}
static void
amd64obsd_trapframe_this_id (struct frame_info *this_frame,
void **this_cache, struct frame_id *this_id)
{
struct trad_frame_cache *cache =
amd64obsd_trapframe_cache (this_frame, this_cache);
trad_frame_get_id (cache, this_id);
}
static struct value *
amd64obsd_trapframe_prev_register (struct frame_info *this_frame,
void **this_cache, int regnum)
{
struct trad_frame_cache *cache =
amd64obsd_trapframe_cache (this_frame, this_cache);
return trad_frame_get_register (cache, this_frame, regnum);
}
static int
amd64obsd_trapframe_sniffer (const struct frame_unwind *self,
struct frame_info *this_frame,
void **this_prologue_cache)
{
ULONGEST cs;
const char *name;
/* Check Current Privilege Level and bail out if we're not executing
in kernel space. */
cs = get_frame_register_unsigned (this_frame, AMD64_CS_REGNUM);
if ((cs & I386_SEL_RPL) == I386_SEL_UPL)
return 0;
find_pc_partial_function (get_frame_pc (this_frame), &name, NULL, NULL);
return (name && ((strcmp (name, "calltrap") == 0)
|| (strcmp (name, "osyscall1") == 0)
|| (strcmp (name, "Xsyscall") == 0)
|| (strncmp (name, "Xintr", 5) == 0)));
}
static const struct frame_unwind amd64obsd_trapframe_unwind = {
/* FIXME: kettenis/20051219: This really is more like an interrupt
frame, but SIGTRAMP_FRAME would print <signal handler called>,
which really is not what we want here. */
NORMAL_FRAME,
default_frame_unwind_stop_reason,
amd64obsd_trapframe_this_id,
amd64obsd_trapframe_prev_register,
NULL,
amd64obsd_trapframe_sniffer
};
static void
amd64obsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
amd64_init_abi (info, gdbarch);
/* Initialize general-purpose register set details. */
tdep->gregset_reg_offset = amd64obsd_r_reg_offset;
tdep->gregset_num_regs = ARRAY_SIZE (amd64obsd_r_reg_offset);
tdep->sizeof_gregset = 24 * 8;
tdep->jb_pc_offset = 7 * 8;
tdep->sigtramp_p = amd64obsd_sigtramp_p;
tdep->sigcontext_addr = amd64obsd_sigcontext_addr;
tdep->sc_reg_offset = amd64obsd_sc_reg_offset;
tdep->sc_num_regs = ARRAY_SIZE (amd64obsd_sc_reg_offset);
/* OpenBSD provides a user-level threads implementation. */
bsd_uthread_set_supply_uthread (gdbarch, amd64obsd_supply_uthread);
bsd_uthread_set_collect_uthread (gdbarch, amd64obsd_collect_uthread);
/* OpenBSD uses SVR4-style shared libraries. */
set_solib_svr4_fetch_link_map_offsets
(gdbarch, svr4_lp64_fetch_link_map_offsets);
/* Unwind kernel trap frames correctly. */
frame_unwind_prepend_unwinder (gdbarch, &amd64obsd_trapframe_unwind);
}
/* Traditional (a.out) NetBSD-style core dumps. */
static void
amd64obsd_core_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
amd64obsd_init_abi (info, gdbarch);
set_gdbarch_regset_from_core_section
(gdbarch, amd64obsd_regset_from_core_section);
}
/* Provide a prototype to silence -Wmissing-prototypes. */
void _initialize_amd64obsd_tdep (void);
void
_initialize_amd64obsd_tdep (void)
{
/* The OpenBSD/amd64 native dependent code makes this assumption. */
gdb_assert (ARRAY_SIZE (amd64obsd_r_reg_offset) == AMD64_NUM_GREGS);
gdbarch_register_osabi (bfd_arch_i386, bfd_mach_x86_64,
GDB_OSABI_OPENBSD_ELF, amd64obsd_init_abi);
/* OpenBSD uses traditional (a.out) NetBSD-style core dumps. */
gdbarch_register_osabi (bfd_arch_i386, bfd_mach_x86_64,
GDB_OSABI_NETBSD_AOUT, amd64obsd_core_init_abi);
}
Reference in New Issue View Git Blame Copy Permalink