binutils-gdb/gdb/amd64-darwin-tdep.c

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/* Darwin support for GDB, the GNU debugger.
Copyright (C) 1997-2018 Free Software Foundation, Inc.
Contributed by Apple Computer, 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 "inferior.h"
#include "gdbcore.h"
#include "target.h"
#include "symtab.h"
#include "regcache.h"
#include "objfiles.h"
#include "i387-tdep.h"
#include "x86-xstate.h"
#include "amd64-tdep.h"
#include "osabi.h"
#include "ui-out.h"
#include "amd64-darwin-tdep.h"
#include "i386-darwin-tdep.h"
#include "solib.h"
#include "solib-darwin.h"
#include "dwarf2-frame.h"
/* Offsets into the struct x86_thread_state64 where we'll find the saved regs.
From <mach/i386/thread_status.h> and amd64-tdep.h. */
int amd64_darwin_thread_state_reg_offset[] =
{
0 * 8, /* %rax */
1 * 8, /* %rbx */
2 * 8, /* %rcx */
3 * 8, /* %rdx */
5 * 8, /* %rsi */
4 * 8, /* %rdi */
6 * 8, /* %rbp */
7 * 8, /* %rsp */
2011-01-07 Michael Snyder <msnyder@vmware.com> * ada-lang.c: Comment cleanup, mostly periods and spaces. * ada-lang.h: Ditto. * ada-tasks.c: Ditto. * ada-valprint.c: Ditto. * aix-threads.c: Ditto. * alpha-linux-nat.c: Ditto. * alpha-linux-tdep.c: Ditto. * alpha-mdebug-tdep.c: Ditto. * alpha-nat.c: Ditto. * alpha-osf1-tdep.c: Ditto. * alpha-tdep.c: Ditto. * alphabsd-nat.c: Ditto. * alphabsd-tdep.c: Ditto. * amd64-darwin-tdep.c: Ditto. * amd64-linux-nat.c: Ditto. * amd64-linux-tdep.c: Ditto. * amd64-sol2-tdep.c: Ditto. * amd64-tdep.c: Ditto. * amd64-fbsd-tdep.c: Ditto. * amd64-nbsd-tdep.c: Ditto. * amd64-obsd-tdep.c: Ditto. * amd64-linux-nat.c: Ditto. * amd64-linux-tdep.c: Ditto. * arm-tdep.c: Ditto. * arm-tdep.h: Ditto. * armnbsd-nat.c: Ditto. * avr-tdep.c: Ditto. * bfin-tdep.c: Ditto. * bsd-kvm.c: Ditto. * c-typeprintc: Ditto. * c-valprint.c: Ditto. * coff-pe-read.h: Ditto. * coffreead.c: Ditto. * cris-tdep.c: Ditto. * d-lang.c: Ditto. * darwin-nat-info.c: Ditto. * darwin-nat.c: Ditto. * dbug-rom.c: Ditto. * dbxread.c: Ditto. * dcache.c: Ditto. * dcache.h: Ditto. * dec-thread.c: Ditto. * defs.h: Ditto. * demangle.c: Ditto. * dicos-tdep.c: Ditto. * dictionary.c: Ditto. * dictionary.h: Ditto. * dink32-rom.c: Ditto. * disasm.c: Ditto. * doublest.c: Ditto. * dsrec.c: Ditto. * dummy-frame.c: Ditto. * dwarf2-frame.c: Ditto. * dwarf2expr.c: Ditto. * dwarf2loc.c: Ditto. * dwarf2read.c: Ditto. * elfread.c: Ditto. * environ.c: Ditto. * eval.c: Ditto. * event-top.h: Ditto. * exceptions.c: Ditto. * exceptions.h: Ditto. * exec.c: Ditto. * expprint.c: Ditto. * expression.h: Ditto. * f-exp.y: Ditto. * f-lang.c: Ditto. * f-lang.h: Ditto. * f-typeprint.c: Ditto. * f-valprint.c: Ditto. * fbsd-nat.c: Ditto. * findvar.c: Ditto. * fork-child.c: Ditto. * frame.c: Ditto. * frame.h: Ditto. * frv-linux-tdep.c: Ditto. * frv-tdep.c: Ditto. * gcore.c: Ditto. * gdb-stabs.h: Ditto. * gdb_assert.h: Ditto. * gdb_string.h: Ditto. * gdb_thread_db.h: Ditto. * gdb_wait.h: Ditto. * gdbarch.sh: Ditto. * gdbcore.h: Ditto. * gdbthread.h: Ditto. * gdbtypes.c: Ditto. * gdbtypes.h: Ditto. * gnu-nat.c: Ditto. * gnu-nat.h: Ditto. * gnu-v2-abi.c: Ditto. * gnu-v3-abi.c: Ditto. * go32-nat.c: Ditto. * gdbarch.c: Regenerate. * gdbarch.h: Regenerate.
2011-01-07 20:36:19 +01:00
8 * 8, /* %r8 ... */
9 * 8,
10 * 8,
11 * 8,
12 * 8,
13 * 8,
14 * 8,
15 * 8, /* ... %r15 */
16 * 8, /* %rip */
17 * 8, /* %rflags */
18 * 8, /* %cs */
-1, /* %ss */
-1, /* %ds */
-1, /* %es */
19 * 8, /* %fs */
20 * 8 /* %gs */
};
const int amd64_darwin_thread_state_num_regs =
ARRAY_SIZE (amd64_darwin_thread_state_reg_offset);
/* Assuming THIS_FRAME is a Darwin sigtramp routine, return the
address of the associated sigcontext structure. */
static CORE_ADDR
amd64_darwin_sigcontext_addr (struct frame_info *this_frame)
{
struct gdbarch *gdbarch = get_frame_arch (this_frame);
enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
CORE_ADDR rbx;
gdb_byte buf[8];
/* A pointer to the ucontext is passed as the fourth argument
to the signal handler, which is saved in rbx. */
get_frame_register (this_frame, AMD64_RBX_REGNUM, buf);
rbx = extract_unsigned_integer (buf, 8, byte_order);
/* The pointer to mcontext is at offset 48. */
read_memory (rbx + 48, buf, 8);
/* First register (rax) is at offset 16. */
return extract_unsigned_integer (buf, 8, byte_order) + 16;
}
static void
x86_darwin_init_abi_64 (struct gdbarch_info info, struct gdbarch *gdbarch)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
amd64_init_abi (info, gdbarch,
amd64_target_description (X86_XSTATE_SSE_MASK, true));
tdep->struct_return = reg_struct_return;
dwarf2_frame_set_signal_frame_p (gdbarch, darwin_dwarf_signal_frame_p);
tdep->sigtramp_p = i386_sigtramp_p;
tdep->sigcontext_addr = amd64_darwin_sigcontext_addr;
tdep->sc_reg_offset = amd64_darwin_thread_state_reg_offset;
tdep->sc_num_regs = amd64_darwin_thread_state_num_regs;
tdep->jb_pc_offset = 56;
set_solib_ops (gdbarch, &darwin_so_ops);
}
void
_initialize_amd64_darwin_tdep (void)
{
gdbarch_register_osabi (bfd_arch_i386, bfd_mach_x86_64,
GDB_OSABI_DARWIN, x86_darwin_init_abi_64);
}