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binutils-gdb/gdb/amd64obsd-nat.c
Eli Zaretskii 197e01b6dc * breakpoint.c: 
* 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.
2005-12-17 22:34:03 +00:00

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/* Native-dependent code for OpenBSD/amd64.
Copyright (C) 2003, 2004 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 2 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, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */
#include "defs.h"
#include "gdbcore.h"
#include "regcache.h"
#include "target.h"
#include "gdb_assert.h"
#include "amd64-tdep.h"
#include "amd64-nat.h"
/* Mapping between the general-purpose registers in OpenBSD/amd64
`struct reg' format and GDB's register cache layout for
OpenBSD/i386.
Note that most (if not all) OpenBSD/amd64 registers are 64-bit,
while the OpenBSD/i386 registers are all 32-bit, but since we're
little-endian we get away with that. */
/* From <machine/reg.h>. */
static int amd64obsd32_r_reg_offset[] =
{
14 * 8, /* %eax */
3 * 8, /* %ecx */
2 * 8, /* %edx */
13 * 8, /* %ebx */
15 * 8, /* %esp */
12 * 8, /* %ebp */
1 * 8, /* %esi */
0 * 8, /* %edi */
16 * 8, /* %eip */
17 * 8, /* %eflags */
18 * 8, /* %cs */
19 * 8, /* %ss */
20 * 8, /* %ds */
21 * 8, /* %es */
22 * 8, /* %fs */
23 * 8 /* %gs */
};
/* Support for debugging kernel virtual memory images. */
#include <sys/types.h>
#include <machine/frame.h>
#include <machine/pcb.h>
#include "bsd-kvm.h"
static int
amd64obsd_supply_pcb (struct regcache *regcache, struct pcb *pcb)
{
struct switchframe sf;
int regnum;
/* The following is true for OpenBSD 3.5:
The pcb contains the stack pointer at the point of the context
switch in cpu_switch(). At that point we have a stack frame as
described by `struct switchframe', which for OpenBSD 3.5 has the
following layout:
interrupt level
%r15
%r14
%r13
%r12
%rbp
%rbx
return address
Together with %rsp in the pcb, this accounts for all callee-saved
registers specified by the psABI. From this information we
reconstruct the register state as it would look when we just
returned from cpu_switch().
For core dumps the pcb is saved by savectx(). In that case the
stack frame only contains the return address, and there is no way
to recover the other registers. */
/* The stack pointer shouldn't be zero. */
if (pcb->pcb_rsp == 0)
return 0;
/* Read the stack frame, and check its validity. */
read_memory (pcb->pcb_rsp, (char *) &sf, sizeof sf);
if (sf.sf_rbp == pcb->pcb_rbp)
{
/* Yes, we have a frame that matches cpu_switch(). */
pcb->pcb_rsp += sizeof (struct switchframe);
regcache_raw_supply (regcache, 12, &sf.sf_r12);
regcache_raw_supply (regcache, 13, &sf.sf_r13);
regcache_raw_supply (regcache, 14, &sf.sf_r14);
regcache_raw_supply (regcache, 15, &sf.sf_r15);
regcache_raw_supply (regcache, AMD64_RBX_REGNUM, &sf.sf_rbx);
regcache_raw_supply (regcache, AMD64_RIP_REGNUM, &sf.sf_rip);
}
else
{
/* No, the pcb must have been last updated by savectx(). */
pcb->pcb_rsp += 8;
regcache_raw_supply (regcache, AMD64_RIP_REGNUM, &sf);
}
regcache_raw_supply (regcache, AMD64_RSP_REGNUM, &pcb->pcb_rsp);
regcache_raw_supply (regcache, AMD64_RBP_REGNUM, &pcb->pcb_rbp);
return 1;
}
/* Provide a prototype to silence -Wmissing-prototypes. */
void _initialize_amd64obsd_nat (void);
void
_initialize_amd64obsd_nat (void)
{
amd64_native_gregset32_reg_offset = amd64obsd32_r_reg_offset;
amd64_native_gregset32_num_regs = ARRAY_SIZE (amd64obsd32_r_reg_offset);
amd64_native_gregset64_reg_offset = amd64obsd_r_reg_offset;
/* We've got nothing to add to the common *BSD/amd64 target. */
add_target (amd64bsd_target ());
/* Support debugging kernel virtual memory images. */
bsd_kvm_add_target (amd64obsd_supply_pcb);
}
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