2003-07-13 18:15:59 +02:00
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/* Target-dependent code for FreeBSD/amd64.
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2003-10-11 16:54:24 +02:00
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2017-01-01 07:50:51 +01:00
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Copyright (C) 2003-2017 Free Software Foundation, Inc.
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2003-07-13 18:15:59 +02:00
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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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2007-08-23 20:08:50 +02:00
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the Free Software Foundation; either version 3 of the License, or
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2003-07-13 18:15:59 +02:00
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(at your option) any later version.
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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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You should have received a copy of the GNU General Public License
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2007-08-23 20:08:50 +02:00
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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2003-07-13 18:15:59 +02:00
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#include "defs.h"
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#include "arch-utils.h"
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#include "frame.h"
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#include "gdbcore.h"
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#include "regcache.h"
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#include "osabi.h"
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2015-02-21 22:43:30 +01:00
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#include "regset.h"
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Normalize names of some source files
Most tdep/nat files are named:
<cpu>-<os>-tdep.c
<cpu>-<os>-nat.c
A few files do not respect this scheme. This patch renames them so that
they are consistent with the rest of the files. It builds fine with
--enable-targets=all, but that doesn't test the nat files. I can only
hope that my grep skill is good enough.
gdb/ChangeLog:
* Makefile.in (ALL_64_TARGET_OBS, ALL_TARGET_OBS,
HFILES_NO_SRCDIR, ALLDEPFILES): Rename files.
* alphabsd-nat.c: Rename to ...
* alpha-bsd-nat.c: ... this, adjust include.
* alphabsd-tdep.c: Rename to ...
* alpha-bsd-tdep.c: ... this, adjust include.
* alphabsd-tdep.h: Rename to ...
* alpha-bsd-tdep.h: ... this, adjust include barrier and comment.
* alphafbsd-tdep.c: Rename to ...
* alpha-fbsd-tdep.c: ... this.
* alphanbsd-tdep.c: Rename to ...
* alpha-nbsd-tdep.c: ... this, adjust include.
* alphaobsd-tdep.c: Rename to ...
* alpha-obsd-tdep.c: ... this, adjust include.
* amd64bsd-nat.c: Rename to ...
* amd64-bsd-nat.c: ... this, adjust include.
* amd64fbsd-nat.c: Rename to ...
* amd64-fbsd-nat.c: ... this, adjust include.
* amd64fbsd-tdep.c: Rename to ...
* amd64-fbsd-tdep.c: ... this, adjust include.
* amd64nbsd-nat.c: Rename to ...
* amd64-nbsd-nat.c: ... this.
* amd64nbsd-tdep.c: Rename to ...
* amd64-nbsd-tdep.c: ... this.
* amd64obsd-nat.c: Rename to ...
* amd64-obsd-nat.c: ... this.
* amd64obsd-tdep.c: Rename to ...
* amd64-obsd-tdep.c: ... this.
* amd64-tdep.h: Update comments.
* armbsd-tdep.c: Rename to ...
* arm-bsd-tdep.c: ... this.
* armnbsd-nat.c: Rename to ...
* arm-nbsd-nat.c: ... this.
* armnbsd-tdep.c: Rename to ...
* arm-nbsd-tdep.c: ... this.
* armobsd-tdep.c: Rename to ...
* arm-obsd-tdep.c: ... this.
* arm-tdep.h: Update comments.
* hppabsd-tdep.c: Rename to ...
* hppa-bsd-tdep.c: ... this, adjust include.
* hppabsd-tdep.h: Rename to ...
* hppa-bsd-tdep.h: ... this, adjust include barrier and comment.
* hppanbsd-nat.c: Rename to ...
* hppa-nbsd-nat.c: ... this.
* hppanbsd-tdep.c: Rename to ...
* hppa-nbsd-tdep.c: ... this, adjust include.
* hppaobsd-nat.c: Rename to ...
* hppa-obsd-nat.c: ... this.
* hppaobsd-tdep.c: Rename to ...
* hppa-obsd-tdep.c: ... this, adjust include.
* i386bsd-nat.c: Rename to ...
* i386-bsd-nat.c: ... this, adjust include.
* i386bsd-nat.h: Rename to ...
* i386-bsd-nat.h: ... this, adjust include barrier and comment.
* i386bsd-tdep.c: Rename to ...
* i386-bsd-tdep.c: ... this.
* i386fbsd-nat.c: Rename to ...
* i386-fbsd-nat.c: ... this, adjust include.
* i386fbsd-tdep.c: Rename to ...
* i386-fbsd-tdep.c: ... this, adjust include.
* i386fbsd-tdep.h: Rename to ...
* i386-fbsd-tdep.h: ... this, adjust include barrier and comment.
* i386gnu-nat.c: Rename to ...
* i386-gnu-nat.c: ... this.
* i386gnu-tdep.c: Rename to ...
* i386-gnu-tdep.c: ... this.
* i386nbsd-nat.c: Rename to ...
* i386-nbsd-nat.c: ... this, adjust include.
* i386nbsd-tdep.c: Rename to ...
* i386-nbsd-tdep.c: ... this.
* i386obsd-nat.c: Rename to ...
* i386-obsd-nat.c: ... this, adjust include.
* i386obsd-tdep.c: Rename to ...
* i386-obsd-tdep.c: ... this.
* i386v4-nat.c: Rename to ...
* i386-v4-nat.c: ... this.
* i386-tdep.h: Update comments.
* m68k-tdep.h: Update comments.
* m68kbsd-nat.c: Rename to ...
* m68k-bsd-nat.c: ... this.
* m68kbsd-tdep.c: Rename to ...
* m68k-bsd-tdep.c: ... this.
* m68klinux-nat.c: Rename to ...
* m68k-linux-nat.c: ... this.
* m68klinux-tdep.c: Rename to ...
* m68k-linux-tdep.c: ... this.
* m88kbsd-nat.c: Rename to ...
* m88k-bsd-nat.c: ... this.
* mipsnbsd-nat.c: Rename to ...
* mips-nbsd-nat.c: ... this, adjust include.
* mipsnbsd-tdep.c: Rename to ...
* mips-nbsd-tdep.c: ... this, adjust include.
* mipsnbsd-tdep.h: Rename to ...
* mips-nbsd-tdep.h: ... this, adjust include barrier and comment.
* mips64obsd-nat.c: Rename to ...
* mips64-obsd-nat.c: ... this.
* mips64obsd-tdep.c: Rename to ...
* mips64-obsd-tdep.c: ... this.
* ppcfbsd-nat.c: Rename to ...
* ppc-fbsd-nat.c: ... this, adjust include.
* ppcfbsd-tdep.c: Rename to ...
* ppc-fbsd-tdep.c: ... this, adjust include.
* ppcfbsd-tdep.h: Rename to ...
* ppc-fbsd-tdep.h: ... this, adjust include barrier and comment.
* ppcnbsd-nat.c: Rename to ...
* ppc-nbsd-nat.c: ... this, adjust include.
* ppcnbsd-tdep.c: Rename to ...
* ppc-nbsd-tdep.c: ... this, adjust include.
* ppcnbsd-tdep.h: Rename to ...
* ppc-nbsd-tdep.h: ... this, adjust include barrier and comment.
* ppcobsd-nat.c: Rename to ...
* ppc-obsd-nat.c: ... this, adjust include.
* ppcobsd-tdep.c: Rename to ...
* ppc-obsd-tdep.c: ... this, adjust include.
* ppcobsd-tdep.h: Rename to ...
* ppc-obsd-tdep.h: ... this, adjust include barrier and comment.
* shnbsd-nat.c: Rename to ...
* sh-nbsd-nat.c: ... this.
* shnbsd-tdep.c: Rename to ...
* sh-nbsd-tdep.c: ... this.
* sparcnbsd-nat.c: Rename to ...
* sparc-nbsd-nat.c: ... this.
* sparcnbsd-tdep.c: Rename to ...
* sparc-nbsd-tdep.c: ... this.
* sparcobsd-tdep.c: Rename to ...
* sparc-obsd-tdep.c: ... this.
* sparc64fbsd-nat.c: Rename to ...
* sparc64-fbsd-nat.c: ... this.
* sparc64fbsd-tdep.c: Rename to ...
* sparc64-fbsd-tdep.c: ... this.
* sparc64nbsd-nat.c: Rename to ...
* sparc64-nbsd-nat.c: ... this.
* sparc64nbsd-tdep.c: Rename to ...
* sparc64-nbsd-tdep.c: ... this.
* sparc64obsd-nat.c: Rename to ...
* sparc64-obsd-nat.c: ... this.
* sparc64obsd-tdep.c: Rename to ...
* sparc64-obsd-tdep.c: ... this.
* sparc64-tdep.h: Update comments.
* vaxbsd-nat.c: Rename to ...
* vax-bsd-nat.c: ... this.
* vaxnbsd-tdep.c: Rename to ...
* vax-nbsd-tdep.c: ... this.
* vaxobsd-tdep.c: Rename to ...
* vax-obsd-tdep.c: ... this.
* x86bsd-nat.h: Rename to ...
* x86-bsd-nat.h: ... this, adjust include barrier and comment.
* x86bsd-nat.c: Rename to ...
* x86-bsd-nat.c: ... this, adjust include.
* configure.tgt: Update renamed files.
* config/alpha/fbsd.mh: Update renamed files.
* config/alpha/nbsd.mh: Update renamed files.
* config/arm/nbsdelf.mh: Update renamed files.
* config/djgpp/fnchange.lst: Update renamed files.
* config/i386/fbsd.mh: Update renamed files.
* config/i386/fbsd64.mh: Update renamed files.
* config/i386/i386gnu.mh: Update renamed files.
* config/i386/i386sol2.mh: Update renamed files.
* config/i386/nbsd64.mh: Update renamed files.
* config/i386/nbsdelf.mh: Update renamed files.
* config/i386/obsd.mh: Update renamed files.
* config/i386/obsd64.mh: Update renamed files.
* config/i386/sol2-64.mh: Update renamed files.
* config/m68k/linux.mh: Update renamed files.
* config/m68k/nbsdelf.mh: Update renamed files.
* config/m68k/obsd.mh: Update renamed files.
* config/m88k/obsd.mh: Update renamed files.
* config/mips/nbsd.mh: Update renamed files.
* config/mips/obsd64.mh: Update renamed files.
* config/pa/nbsd.mh: Update renamed files.
* config/pa/obsd.mh: Update renamed files.
* config/powerpc/fbsd.mh: Update renamed files.
* config/powerpc/nbsd.mh: Update renamed files.
* config/powerpc/obsd.mh: Update renamed files.
* config/sh/nbsd.mh: Update renamed files.
* config/sparc/fbsd.mh: Update renamed files.
* config/sparc/nbsd64.mh: Update renamed files.
* config/sparc/nbsdelf.mh: Update renamed files.
* config/sparc/obsd64.mh: Update renamed files.
* config/vax/nbsdelf.mh: Update renamed files.
* config/vax/obsd.mh: Update renamed files.
2016-11-22 22:14:24 +01:00
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#include "i386-fbsd-tdep.h"
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2015-02-21 22:43:30 +01:00
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#include "x86-xstate.h"
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2003-07-13 18:15:59 +02:00
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2004-02-25 21:59:12 +01:00
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#include "amd64-tdep.h"
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2014-03-29 11:04:26 +01:00
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#include "fbsd-tdep.h"
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* amd64fbsd-tdep.c: Include "solib-svr4.h".
(amd64fbsd_init_abi): Set link map offsets.
* amd64nbsd-tdep.c: Include "slib-svr4.h".
(amd64nbsd_init_abi): Set link map offsets.
* amd64obsd-tdep.c: Include "solib-svr4.h".
(amd64obsd_init_abi): Set link map offsets.
* i386fbsd-tdep.c: Include "solib-svr4.h".
(i386fbsd_init_abi): Set link map offsets.
* i386nbsd-tdep.c: Include "solib-svr4.h".
(i386nbsdelf_init_abi): Set link map offsets.
* Makefile.in (amd64fbsd-tdep.o, amd64nbsd-tdep.o)
(amd64obsd-tdep.o, i386fbsd-tdep.o): Update dependencies.
* config/i386/fbsd.mh (NATDEPFILES): Remove solib.o, solib-svr4.o,
solib-legacy.o and core-aout.o. Reformat.
* config/i386/fbsd64.mh (NATDEPFILES): Remove solib.o,
solib-svr4.o, solib-legacy.o. Reformat.
* config/i386/nbsdaout.mh (NATDEPFILES): Add solib.o. Reformat.
* config/i386/nbsdelf.mh: Reformat.
* config/i386/nbsd64.mh (NATDEPFILES): Remove solib.o,
solib-svr4.o, solib-legacy.o and corelow.o.
* config/i386/obsd.mh, config/i386/obsdaout.mh: Reformat.
* config/i386/obsd64.mh (NATDEPFILES): Remove solib.o,
solib-svr4.o, solib-legacy.o and corelow.o. Reformat.
* config/i386/fbsd.mt (TDEPFILES): Add solib.o, solib-svr4.o.
* config/i386/fbsd64.mt (TDEPFILES): Add solib.o, solib-svr4.o.
(TM_FILE): Set to tm-fbsd.h.
* config/i386/nbsd.mt (TDEPFILES): Reformat.
* config/i386/nbsd64.mt (TDEPFILES): Add corelow.o, solib.o and
solib-svr4.o.
* config/i386/obsd.mt (TDEPFILES): Add corelow.o, solib.o and
solib-svr4.o.
(TM_FILE): Set to nm-nbsd.h.
* config/i386/nm-fbsd.h: Update copyright year. Tweak comments.
Simplify shared library support. Don't include "elf/common.h".
(SVR4_SHARED_LIBS): Don't define.
* config/i386/nm-fbsd64.h: Update copyright year. Don't include
"solib.h".
* config/i386/nm-nbsd.h, config/i386/nm-nbsdaout.h,
config/i386/nm-obsd.h: Update copyright year. Tweak comments.
* config/i386/tm-fbsd.h: Update copyright tear. Tweak comments.
Don't include "i386/tm-i386.h". Include "solib.h".
* config/i386/tm-nbsd.h: Update copyright year. Tweak comments.
Don't include "i386/tm-i386.h".
* config/i386/xm-i386.h: Update copyright year. Tweak comments.
* config/i386/xm-nbsd.h: Update copyright year. Tweak comments.
Include "i386/xm-i386.h".
(HOST_LONG_DOUBLE_FORMAT): Remove.
2004-02-22 17:20:22 +01:00
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#include "solib-svr4.h"
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2003-07-13 18:15:59 +02:00
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/* Support for signal handlers. */
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2015-02-25 15:51:42 +01:00
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/* Return whether THIS_FRAME corresponds to a FreeBSD sigtramp
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routine. */
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static const gdb_byte amd64fbsd_sigtramp_code[] =
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{
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0x48, 0x8d, 0x7c, 0x24, 0x10, /* lea SIGF_UC(%rsp),%rdi */
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0x6a, 0x00, /* pushq $0 */
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0x48, 0xc7, 0xc0, 0xa1, 0x01, 0x00, 0x00,
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/* movq $SYS_sigreturn,%rax */
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0x0f, 0x05 /* syscall */
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};
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static int
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amd64fbsd_sigtramp_p (struct frame_info *this_frame)
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{
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CORE_ADDR pc = get_frame_pc (this_frame);
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gdb_byte buf[sizeof amd64fbsd_sigtramp_code];
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if (!safe_frame_unwind_memory (this_frame, pc, buf, sizeof buf))
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return 0;
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2015-02-27 19:17:43 +01:00
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if (memcmp (buf, amd64fbsd_sigtramp_code, sizeof amd64fbsd_sigtramp_code)
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!= 0)
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2015-02-25 15:51:42 +01:00
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return 0;
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return 1;
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}
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Update i386 and amd64 ports for unwinder changes.
* amd64-tdep.c (amd64_frame_cache): Expect this_frame.
(amd64_frame_this_id, amd64_frame_prev_register): Update signature.
(amd64_frame_unwind): Use default_frame_sniffer.
(amd64_frame_sniffer): Delete.
(amd64_sigtramp_frame_cache): Expect this_frame.
(amd64_sigtramp_frame_this_id, amd64_sigtramp_frame_prev_register)
(amd64_sigtramp_frame_sniffer): Update signature.
(amd64_sigtramp_frame_unwind): Add amd64_sigtramp_frame_sniffer.
(amd64_frame_base_address): Expect this_frame.
(amd64_dummy_id): Renamed from amd64_unwind_dummy_id. Expect
this_frame.
(amd64_init_abi): Use set_gdbarch_dummy_id and
frame_unwind_append_unwinder.
* i386-tdep.c (i386_frame_cache): Expect this_frame.
(i386_frame_this_id, i386_frame_prev_register): Update signature.
(i386_frame_unwind): Use default_frame_sniffer.
(i386_frame_sniffer): Delete.
(i386_sigtramp_frame_cache): Expect this_frame.
(i386_sigtramp_frame_this_id, i386_sigtramp_frame_prev_register)
(i386_sigtramp_frame_sniffer): Update signature.
(i386_sigtramp_frame_unwind): Use i386_sigtramp_frame_sniffer.
(i386_frame_base_address): Update signature.
(i386_dummy_id): Rename from i386_unwind_dummy_id. Expect this_frame.
(i386_push_dummy_call): Update comment.
(i386_sigtramp_p, i386_svr4_sigtramp_p, i386_svr4_sigcontext_addr):
Expect this_frame.
(i386_gdbarch_init): Use set_gdbarch_dummy_id, dwarf2_append_unwinders,
and frame_unwind_append_unwinder.
* amd64-linux-tdep.c, amd64-sol2-tdep.c, amd64fbsd-tdep.c,
amd64nbsd-tdep.c, amd64obsd-tdep.c, i386-linux-tdep.c,
i386-nto-tdep.c, i386bsd-tdep.c, i386-sol2-tdep.c, i386obsd-tdep.c,
i386nbsd-tdep.c: Update for unwinder changes.
2008-04-30 23:19:45 +02:00
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/* Assuming THIS_FRAME is for a BSD sigtramp routine, return the
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address of the associated sigcontext structure. */
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2003-07-13 18:15:59 +02:00
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static CORE_ADDR
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Update i386 and amd64 ports for unwinder changes.
* amd64-tdep.c (amd64_frame_cache): Expect this_frame.
(amd64_frame_this_id, amd64_frame_prev_register): Update signature.
(amd64_frame_unwind): Use default_frame_sniffer.
(amd64_frame_sniffer): Delete.
(amd64_sigtramp_frame_cache): Expect this_frame.
(amd64_sigtramp_frame_this_id, amd64_sigtramp_frame_prev_register)
(amd64_sigtramp_frame_sniffer): Update signature.
(amd64_sigtramp_frame_unwind): Add amd64_sigtramp_frame_sniffer.
(amd64_frame_base_address): Expect this_frame.
(amd64_dummy_id): Renamed from amd64_unwind_dummy_id. Expect
this_frame.
(amd64_init_abi): Use set_gdbarch_dummy_id and
frame_unwind_append_unwinder.
* i386-tdep.c (i386_frame_cache): Expect this_frame.
(i386_frame_this_id, i386_frame_prev_register): Update signature.
(i386_frame_unwind): Use default_frame_sniffer.
(i386_frame_sniffer): Delete.
(i386_sigtramp_frame_cache): Expect this_frame.
(i386_sigtramp_frame_this_id, i386_sigtramp_frame_prev_register)
(i386_sigtramp_frame_sniffer): Update signature.
(i386_sigtramp_frame_unwind): Use i386_sigtramp_frame_sniffer.
(i386_frame_base_address): Update signature.
(i386_dummy_id): Rename from i386_unwind_dummy_id. Expect this_frame.
(i386_push_dummy_call): Update comment.
(i386_sigtramp_p, i386_svr4_sigtramp_p, i386_svr4_sigcontext_addr):
Expect this_frame.
(i386_gdbarch_init): Use set_gdbarch_dummy_id, dwarf2_append_unwinders,
and frame_unwind_append_unwinder.
* amd64-linux-tdep.c, amd64-sol2-tdep.c, amd64fbsd-tdep.c,
amd64nbsd-tdep.c, amd64obsd-tdep.c, i386-linux-tdep.c,
i386-nto-tdep.c, i386bsd-tdep.c, i386-sol2-tdep.c, i386obsd-tdep.c,
i386nbsd-tdep.c: Update for unwinder changes.
2008-04-30 23:19:45 +02:00
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amd64fbsd_sigcontext_addr (struct frame_info *this_frame)
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2003-07-13 18:15:59 +02:00
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{
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2015-02-26 12:07:57 +01:00
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struct gdbarch *gdbarch = get_frame_arch (this_frame);
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enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
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2003-07-13 18:15:59 +02:00
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CORE_ADDR sp;
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2015-02-26 12:07:57 +01:00
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gdb_byte buf[8];
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2003-07-13 18:15:59 +02:00
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2003-09-12 21:27:38 +02:00
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/* The `struct sigcontext' (which really is an `ucontext_t' on
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FreeBSD/amd64) lives at a fixed offset in the signal frame. See
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<machine/sigframe.h>. */
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2015-02-26 12:07:57 +01:00
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get_frame_register (this_frame, AMD64_RSP_REGNUM, buf);
|
|
|
|
|
sp = extract_unsigned_integer (buf, 8, byte_order);
|
2003-09-12 21:27:38 +02:00
|
|
|
|
return sp + 16;
|
2003-07-13 18:15:59 +02:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* FreeBSD 5.1-RELEASE or later. */
|
|
|
|
|
|
2003-10-11 16:54:24 +02:00
|
|
|
|
/* Mapping between the general-purpose registers in `struct reg'
|
|
|
|
|
format and GDB's register cache layout.
|
|
|
|
|
|
|
|
|
|
Note that some registers are 32-bit, but since we're little-endian
|
|
|
|
|
we get away with that. */
|
|
|
|
|
|
|
|
|
|
/* From <machine/reg.h>. */
|
|
|
|
|
static int amd64fbsd_r_reg_offset[] =
|
|
|
|
|
{
|
2004-01-10 13:52:41 +01:00
|
|
|
|
14 * 8, /* %rax */
|
|
|
|
|
11 * 8, /* %rbx */
|
|
|
|
|
13 * 8, /* %rcx */
|
|
|
|
|
12 * 8, /* %rdx */
|
|
|
|
|
9 * 8, /* %rsi */
|
|
|
|
|
8 * 8, /* %rdi */
|
|
|
|
|
10 * 8, /* %rbp */
|
|
|
|
|
20 * 8, /* %rsp */
|
2011-01-07 20:36:19 +01:00
|
|
|
|
7 * 8, /* %r8 ... */
|
2004-01-10 13:52:41 +01:00
|
|
|
|
6 * 8,
|
|
|
|
|
5 * 8,
|
|
|
|
|
4 * 8,
|
|
|
|
|
3 * 8,
|
|
|
|
|
2 * 8,
|
|
|
|
|
1 * 8,
|
|
|
|
|
0 * 8, /* ... %r15 */
|
|
|
|
|
17 * 8, /* %rip */
|
|
|
|
|
19 * 8, /* %eflags */
|
|
|
|
|
18 * 8, /* %cs */
|
|
|
|
|
21 * 8, /* %ss */
|
|
|
|
|
-1, /* %ds */
|
|
|
|
|
-1, /* %es */
|
|
|
|
|
-1, /* %fs */
|
|
|
|
|
-1 /* %gs */
|
2003-10-11 16:54:24 +02:00
|
|
|
|
};
|
|
|
|
|
|
2003-07-13 18:15:59 +02:00
|
|
|
|
/* Location of the signal trampoline. */
|
2015-02-25 15:51:42 +01:00
|
|
|
|
CORE_ADDR amd64fbsd_sigtramp_start_addr;
|
|
|
|
|
CORE_ADDR amd64fbsd_sigtramp_end_addr;
|
2003-07-13 18:15:59 +02:00
|
|
|
|
|
|
|
|
|
/* From <machine/signal.h>. */
|
2004-01-10 13:52:41 +01:00
|
|
|
|
int amd64fbsd_sc_reg_offset[] =
|
2003-07-13 18:15:59 +02:00
|
|
|
|
{
|
2003-09-12 21:27:38 +02:00
|
|
|
|
24 + 6 * 8, /* %rax */
|
|
|
|
|
24 + 7 * 8, /* %rbx */
|
|
|
|
|
24 + 3 * 8, /* %rcx */
|
|
|
|
|
24 + 2 * 8, /* %rdx */
|
|
|
|
|
24 + 1 * 8, /* %rsi */
|
|
|
|
|
24 + 0 * 8, /* %rdi */
|
|
|
|
|
24 + 8 * 8, /* %rbp */
|
2003-11-05 23:54:46 +01:00
|
|
|
|
24 + 22 * 8, /* %rsp */
|
2011-01-07 20:36:19 +01:00
|
|
|
|
24 + 4 * 8, /* %r8 ... */
|
2004-01-10 13:52:41 +01:00
|
|
|
|
24 + 5 * 8,
|
|
|
|
|
24 + 9 * 8,
|
|
|
|
|
24 + 10 * 8,
|
|
|
|
|
24 + 11 * 8,
|
|
|
|
|
24 + 12 * 8,
|
|
|
|
|
24 + 13 * 8,
|
|
|
|
|
24 + 14 * 8, /* ... %r15 */
|
2003-11-05 23:54:46 +01:00
|
|
|
|
24 + 19 * 8, /* %rip */
|
|
|
|
|
24 + 21 * 8, /* %eflags */
|
2004-01-10 13:52:41 +01:00
|
|
|
|
24 + 20 * 8, /* %cs */
|
|
|
|
|
24 + 23 * 8, /* %ss */
|
2003-07-13 18:15:59 +02:00
|
|
|
|
-1, /* %ds */
|
|
|
|
|
-1, /* %es */
|
|
|
|
|
-1, /* %fs */
|
|
|
|
|
-1 /* %gs */
|
|
|
|
|
};
|
|
|
|
|
|
2015-02-21 22:43:30 +01:00
|
|
|
|
/* Implement the core_read_description gdbarch method. */
|
|
|
|
|
|
|
|
|
|
static const struct target_desc *
|
|
|
|
|
amd64fbsd_core_read_description (struct gdbarch *gdbarch,
|
|
|
|
|
struct target_ops *target,
|
|
|
|
|
bfd *abfd)
|
|
|
|
|
{
|
|
|
|
|
return amd64_target_description (i386fbsd_core_read_xcr0 (abfd));
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Similar to amd64_supply_fpregset, but use XSAVE extended state. */
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
amd64fbsd_supply_xstateregset (const struct regset *regset,
|
|
|
|
|
struct regcache *regcache, int regnum,
|
|
|
|
|
const void *xstateregs, size_t len)
|
|
|
|
|
{
|
|
|
|
|
amd64_supply_xsave (regcache, regnum, xstateregs);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Similar to amd64_collect_fpregset, but use XSAVE extended state. */
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
amd64fbsd_collect_xstateregset (const struct regset *regset,
|
|
|
|
|
const struct regcache *regcache,
|
|
|
|
|
int regnum, void *xstateregs, size_t len)
|
|
|
|
|
{
|
|
|
|
|
amd64_collect_xsave (regcache, regnum, xstateregs, 1);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static const struct regset amd64fbsd_xstateregset =
|
|
|
|
|
{
|
|
|
|
|
NULL,
|
|
|
|
|
amd64fbsd_supply_xstateregset,
|
|
|
|
|
amd64fbsd_collect_xstateregset
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
/* Iterate over core file register note sections. */
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
amd64fbsd_iterate_over_regset_sections (struct gdbarch *gdbarch,
|
|
|
|
|
iterate_over_regset_sections_cb *cb,
|
|
|
|
|
void *cb_data,
|
|
|
|
|
const struct regcache *regcache)
|
|
|
|
|
{
|
|
|
|
|
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
|
|
|
|
|
|
|
|
|
|
cb (".reg", tdep->sizeof_gregset, &i386_gregset, NULL, cb_data);
|
|
|
|
|
cb (".reg2", tdep->sizeof_fpregset, &amd64_fpregset, NULL, cb_data);
|
|
|
|
|
cb (".reg-xstate", X86_XSTATE_SIZE(tdep->xcr0),
|
|
|
|
|
&amd64fbsd_xstateregset, "XSAVE extended state", cb_data);
|
|
|
|
|
}
|
|
|
|
|
|
2009-02-22 02:02:20 +01:00
|
|
|
|
static void
|
2003-07-13 18:15:59 +02:00
|
|
|
|
amd64fbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
|
|
|
|
|
{
|
|
|
|
|
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
|
|
|
|
|
|
2014-03-29 11:04:26 +01:00
|
|
|
|
/* Generic FreeBSD support. */
|
|
|
|
|
fbsd_init_abi (info, gdbarch);
|
|
|
|
|
|
2003-07-13 18:15:59 +02:00
|
|
|
|
/* Obviously FreeBSD is BSD-based. */
|
|
|
|
|
i386bsd_init_abi (info, gdbarch);
|
|
|
|
|
|
2003-10-11 16:54:24 +02:00
|
|
|
|
tdep->gregset_reg_offset = amd64fbsd_r_reg_offset;
|
|
|
|
|
tdep->gregset_num_regs = ARRAY_SIZE (amd64fbsd_r_reg_offset);
|
|
|
|
|
tdep->sizeof_gregset = 22 * 8;
|
|
|
|
|
|
Fix x86-64 GNU/Linux crashes
Ref: https://sourceware.org/ml/gdb-patches/2017-07/msg00162.html
Debugging x86-64 GNU/Linux programs currently crashes GDB in
tdesc_use_registers during gdbarch initialization:
Program received signal SIGSEGV, Segmentation fault.
0x0000000001093eaf in htab_remove_elt_with_hash (htab=0x2ef9fa0, element=0x26af960, hash=557151073) at src/libiberty/hashtab.c:728
728 if (*slot == HTAB_EMPTY_ENTRY)
(top-gdb) p slot
$1 = (void **) 0x0
(top-gdb) bt
#0 0x0000000001093eaf in htab_remove_elt_with_hash (htab=0x2ef9fa0, element=0x26af960, hash=557151073) at src/libiberty/hashtab.c:728
#1 0x0000000001093e79 in htab_remove_elt (htab=0x2ef9fa0, element=0x26af960) at src/libiberty/hashtab.c:714
#2 0x00000000009121b0 in tdesc_use_registers (gdbarch=0x3001240, target_desc=0x2659cb0, early_data=0x2881cb0)
at src/gdb/target-descriptions.c:1328
#3 0x000000000047c93e in i386_gdbarch_init (info=..., arches=0x0) at src/gdb/i386-tdep.c:8634
#4 0x0000000000818d5f in gdbarch_find_by_info (info=...) at src/gdb/gdbarch.c:5394
#5 0x00000000007198a8 in set_gdbarch_from_file (abfd=0x2f48250) at src/gdb/arch-utils.c:618
#6 0x00000000007f21cb in exec_file_attach (filename=0x7fffffffddb0 "/home/pedro/gdb/tests/threads", from_tty=1) at src/gdb/exec.c:380
#7 0x0000000000865c18 in catch_command_errors_const (command=0x7f1d83 <exec_file_attach(char const*, int)>, arg=0x7fffffffddb0 "/home/pedro/gdb/tests/threads",
from_tty=1) at src/gdb/main.c:403
#8 0x00000000008669cf in captured_main_1 (context=0x7fffffffd860) at src/gdb/main.c:1035
#9 0x0000000000866de2 in captured_main (data=0x7fffffffd860) at src/gdb/main.c:1142
#10 0x0000000000866e24 in gdb_main (args=0x7fffffffd860) at src/gdb/main.c:1160
#11 0x000000000041312d in main (argc=3, argv=0x7fffffffd968) at src/gdb/gdb.c:32
The direct cause of the crash is that we tried to remove an element
from the hash which supposedly exists, but does not. (htab_remove_elt
shouldn't really crash in this case, but that's secondary.)
The real problem is that early_data passed to tdesc_use_registers
includes regs from a target description that is not the target_desc,
which violates its assumptions. The registers in question are the
fs_base/gs_base registers, added by amd64_init_abi:
tdesc_numbered_register (feature, tdesc_data_segments,
AMD64_FSBASE_REGNUM, "fs_base");
tdesc_numbered_register (feature, tdesc_data_segments,
AMD64_GSBASE_REGNUM, "gs_base");
and that happens because amd64_linux_init_abi uses amd64_init_abi as
helper, but they don't coordinate on which fallback tdesc to use.
amd64_init_abi does:
if (! tdesc_has_registers (tdesc))
tdesc = tdesc_amd64;
and then adds the fs_base/gs_base registers of the "tdesc_amd64" tdesc
to the tdesc_arch_data.
After amd64_init_abi returns, amd64_linux_init_abi does:
if (! tdesc_has_registers (tdesc))
tdesc = tdesc_amd64_linux;
tdep->tdesc = tdesc;
and we end up tdesc_amd64_linux installed in tdep->tdesc.
The fix is to make sure that amd64_linux_init_abi and amd64_init_abi
agree on default tdesc, by adding a "default tdesc" parameter to
amd64_init_abi, instead of having amd64_init_abi hardcode a default.
With this, amd64_init_abi creates the fs_base/gs_base registers using
the tdesc_amd64_linux tdesc.
Tested on x86-64 GNU/Linux, -m64. I don't have an x32 setup handy.
Thanks to John Baldwin, Yao Qi and Simon Marchi for the investigation.
gdb/ChangeLog:
2017-07-13 Pedro Alves <palves@redhat.com>
* amd64-darwin-tdep.c (x86_darwin_init_abi_64): Pass tdesc_amd64
as default tdesc.
* amd64-dicos-tdep.c (amd64_dicos_init_abi):
* amd64-fbsd-tdep.c (amd64fbsd_init_abi):
* amd64-linux-tdep.c (amd64_linux_init_abi): Pass
tdesc_amd64_linux as default tdesc. Get final tdesc from the
tdep.
(amd64_x32_linux_init_abi): Pass tdesc_x32_linux as default tdesc.
Get final tdesc from the tdep.
* amd64-nbsd-tdep.c (amd64nbsd_init_abi): Pass tdesc_amd64 as
default tdesc.
* amd64-obsd-tdep.c (amd64obsd_init_abi): Likewise.
* amd64-sol2-tdep.c (amd64_sol2_init_abi): Likewise.
* amd64-tdep.c (amd64_init_abi): Add 'default_tdesc' parameter.
Use it as default tdesc.
(amd64_x32_init_abi): Add 'default_tdesc' parameter, and pass it
down to amd_init_abi. No longer handle fallback tdesc here.
* amd64-tdep.h (tdesc_x32): Declare.
(amd64_init_abi, amd64_x32_init_abi): Add 'default_tdesc'
parameter.
* amd64-windows-tdep.c (amd64_windows_init_abi): Pass tdesc_amd64
as default tdesc.
2017-07-13 21:56:42 +02:00
|
|
|
|
amd64_init_abi (info, gdbarch, tdesc_amd64);
|
2003-07-13 18:15:59 +02:00
|
|
|
|
|
2015-02-25 15:51:42 +01:00
|
|
|
|
tdep->sigtramp_p = amd64fbsd_sigtramp_p;
|
2004-02-22 20:14:55 +01:00
|
|
|
|
tdep->sigtramp_start = amd64fbsd_sigtramp_start_addr;
|
|
|
|
|
tdep->sigtramp_end = amd64fbsd_sigtramp_end_addr;
|
2003-07-13 18:15:59 +02:00
|
|
|
|
tdep->sigcontext_addr = amd64fbsd_sigcontext_addr;
|
|
|
|
|
tdep->sc_reg_offset = amd64fbsd_sc_reg_offset;
|
2003-10-11 16:54:24 +02:00
|
|
|
|
tdep->sc_num_regs = ARRAY_SIZE (amd64fbsd_sc_reg_offset);
|
* amd64fbsd-tdep.c: Include "solib-svr4.h".
(amd64fbsd_init_abi): Set link map offsets.
* amd64nbsd-tdep.c: Include "slib-svr4.h".
(amd64nbsd_init_abi): Set link map offsets.
* amd64obsd-tdep.c: Include "solib-svr4.h".
(amd64obsd_init_abi): Set link map offsets.
* i386fbsd-tdep.c: Include "solib-svr4.h".
(i386fbsd_init_abi): Set link map offsets.
* i386nbsd-tdep.c: Include "solib-svr4.h".
(i386nbsdelf_init_abi): Set link map offsets.
* Makefile.in (amd64fbsd-tdep.o, amd64nbsd-tdep.o)
(amd64obsd-tdep.o, i386fbsd-tdep.o): Update dependencies.
* config/i386/fbsd.mh (NATDEPFILES): Remove solib.o, solib-svr4.o,
solib-legacy.o and core-aout.o. Reformat.
* config/i386/fbsd64.mh (NATDEPFILES): Remove solib.o,
solib-svr4.o, solib-legacy.o. Reformat.
* config/i386/nbsdaout.mh (NATDEPFILES): Add solib.o. Reformat.
* config/i386/nbsdelf.mh: Reformat.
* config/i386/nbsd64.mh (NATDEPFILES): Remove solib.o,
solib-svr4.o, solib-legacy.o and corelow.o.
* config/i386/obsd.mh, config/i386/obsdaout.mh: Reformat.
* config/i386/obsd64.mh (NATDEPFILES): Remove solib.o,
solib-svr4.o, solib-legacy.o and corelow.o. Reformat.
* config/i386/fbsd.mt (TDEPFILES): Add solib.o, solib-svr4.o.
* config/i386/fbsd64.mt (TDEPFILES): Add solib.o, solib-svr4.o.
(TM_FILE): Set to tm-fbsd.h.
* config/i386/nbsd.mt (TDEPFILES): Reformat.
* config/i386/nbsd64.mt (TDEPFILES): Add corelow.o, solib.o and
solib-svr4.o.
* config/i386/obsd.mt (TDEPFILES): Add corelow.o, solib.o and
solib-svr4.o.
(TM_FILE): Set to nm-nbsd.h.
* config/i386/nm-fbsd.h: Update copyright year. Tweak comments.
Simplify shared library support. Don't include "elf/common.h".
(SVR4_SHARED_LIBS): Don't define.
* config/i386/nm-fbsd64.h: Update copyright year. Don't include
"solib.h".
* config/i386/nm-nbsd.h, config/i386/nm-nbsdaout.h,
config/i386/nm-obsd.h: Update copyright year. Tweak comments.
* config/i386/tm-fbsd.h: Update copyright tear. Tweak comments.
Don't include "i386/tm-i386.h". Include "solib.h".
* config/i386/tm-nbsd.h: Update copyright year. Tweak comments.
Don't include "i386/tm-i386.h".
* config/i386/xm-i386.h: Update copyright year. Tweak comments.
* config/i386/xm-nbsd.h: Update copyright year. Tweak comments.
Include "i386/xm-i386.h".
(HOST_LONG_DOUBLE_FORMAT): Remove.
2004-02-22 17:20:22 +01:00
|
|
|
|
|
2015-02-21 22:43:30 +01:00
|
|
|
|
tdep->xsave_xcr0_offset = I386_FBSD_XSAVE_XCR0_OFFSET;
|
|
|
|
|
|
|
|
|
|
/* Iterate over core file register note sections. */
|
|
|
|
|
set_gdbarch_iterate_over_regset_sections
|
|
|
|
|
(gdbarch, amd64fbsd_iterate_over_regset_sections);
|
|
|
|
|
|
|
|
|
|
set_gdbarch_core_read_description (gdbarch,
|
|
|
|
|
amd64fbsd_core_read_description);
|
|
|
|
|
|
* amd64fbsd-tdep.c: Include "solib-svr4.h".
(amd64fbsd_init_abi): Set link map offsets.
* amd64nbsd-tdep.c: Include "slib-svr4.h".
(amd64nbsd_init_abi): Set link map offsets.
* amd64obsd-tdep.c: Include "solib-svr4.h".
(amd64obsd_init_abi): Set link map offsets.
* i386fbsd-tdep.c: Include "solib-svr4.h".
(i386fbsd_init_abi): Set link map offsets.
* i386nbsd-tdep.c: Include "solib-svr4.h".
(i386nbsdelf_init_abi): Set link map offsets.
* Makefile.in (amd64fbsd-tdep.o, amd64nbsd-tdep.o)
(amd64obsd-tdep.o, i386fbsd-tdep.o): Update dependencies.
* config/i386/fbsd.mh (NATDEPFILES): Remove solib.o, solib-svr4.o,
solib-legacy.o and core-aout.o. Reformat.
* config/i386/fbsd64.mh (NATDEPFILES): Remove solib.o,
solib-svr4.o, solib-legacy.o. Reformat.
* config/i386/nbsdaout.mh (NATDEPFILES): Add solib.o. Reformat.
* config/i386/nbsdelf.mh: Reformat.
* config/i386/nbsd64.mh (NATDEPFILES): Remove solib.o,
solib-svr4.o, solib-legacy.o and corelow.o.
* config/i386/obsd.mh, config/i386/obsdaout.mh: Reformat.
* config/i386/obsd64.mh (NATDEPFILES): Remove solib.o,
solib-svr4.o, solib-legacy.o and corelow.o. Reformat.
* config/i386/fbsd.mt (TDEPFILES): Add solib.o, solib-svr4.o.
* config/i386/fbsd64.mt (TDEPFILES): Add solib.o, solib-svr4.o.
(TM_FILE): Set to tm-fbsd.h.
* config/i386/nbsd.mt (TDEPFILES): Reformat.
* config/i386/nbsd64.mt (TDEPFILES): Add corelow.o, solib.o and
solib-svr4.o.
* config/i386/obsd.mt (TDEPFILES): Add corelow.o, solib.o and
solib-svr4.o.
(TM_FILE): Set to nm-nbsd.h.
* config/i386/nm-fbsd.h: Update copyright year. Tweak comments.
Simplify shared library support. Don't include "elf/common.h".
(SVR4_SHARED_LIBS): Don't define.
* config/i386/nm-fbsd64.h: Update copyright year. Don't include
"solib.h".
* config/i386/nm-nbsd.h, config/i386/nm-nbsdaout.h,
config/i386/nm-obsd.h: Update copyright year. Tweak comments.
* config/i386/tm-fbsd.h: Update copyright tear. Tweak comments.
Don't include "i386/tm-i386.h". Include "solib.h".
* config/i386/tm-nbsd.h: Update copyright year. Tweak comments.
Don't include "i386/tm-i386.h".
* config/i386/xm-i386.h: Update copyright year. Tweak comments.
* config/i386/xm-nbsd.h: Update copyright year. Tweak comments.
Include "i386/xm-i386.h".
(HOST_LONG_DOUBLE_FORMAT): Remove.
2004-02-22 17:20:22 +01:00
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/* FreeBSD uses SVR4-style shared libraries. */
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set_solib_svr4_fetch_link_map_offsets
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(gdbarch, svr4_lp64_fetch_link_map_offsets);
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2003-07-13 18:15:59 +02:00
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}
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/* Provide a prototype to silence -Wmissing-prototypes. */
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void _initialize_amd64fbsd_tdep (void);
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void
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_initialize_amd64fbsd_tdep (void)
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{
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gdbarch_register_osabi (bfd_arch_i386, bfd_mach_x86_64,
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2016-12-09 17:08:49 +01:00
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GDB_OSABI_FREEBSD, amd64fbsd_init_abi);
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2003-07-13 18:15:59 +02:00
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}
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