2003-08-29 15:58:26 +02:00
|
|
|
/* Native-dependent code for AMD64.
|
|
|
|
|
2009-01-03 06:58:08 +01:00
|
|
|
Copyright (C) 2003, 2004, 2007, 2008, 2009 Free Software Foundation, Inc.
|
2003-08-29 15:58:26 +02:00
|
|
|
|
|
|
|
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
|
2007-08-23 20:08:50 +02:00
|
|
|
the Free Software Foundation; either version 3 of the License, or
|
2003-08-29 15:58:26 +02:00
|
|
|
(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
|
2007-08-23 20:08:50 +02:00
|
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>. */
|
2003-08-29 15:58:26 +02:00
|
|
|
|
|
|
|
#include "defs.h"
|
|
|
|
#include "gdbarch.h"
|
|
|
|
#include "regcache.h"
|
|
|
|
|
|
|
|
#include "gdb_assert.h"
|
2004-02-28 22:55:48 +01:00
|
|
|
#include "gdb_string.h"
|
2003-08-29 15:58:26 +02:00
|
|
|
|
|
|
|
#include "i386-tdep.h"
|
2004-02-25 21:59:12 +01:00
|
|
|
#include "amd64-tdep.h"
|
2003-08-29 15:58:26 +02:00
|
|
|
|
|
|
|
/* The following bits of code help with implementing debugging 32-bit
|
|
|
|
code natively on AMD64. The idea is to define two mappings between
|
|
|
|
the register number as used by GDB and the register set used by the
|
|
|
|
host to represent the general-purpose registers; one for 32-bit
|
|
|
|
code and one for 64-bit code. The mappings are specified by the
|
|
|
|
follwing variables and consist of an array of offsets within the
|
|
|
|
register set indexed by register number, and the number of
|
|
|
|
registers supported by the mapping. We don't need mappings for the
|
|
|
|
floating-point and SSE registers, since the difference between
|
|
|
|
64-bit and 32-bit variants are negligable. The difference in the
|
|
|
|
number of SSE registers is already handled by the target code. */
|
|
|
|
|
|
|
|
/* General-purpose register mapping for native 32-bit code. */
|
|
|
|
int *amd64_native_gregset32_reg_offset;
|
|
|
|
int amd64_native_gregset32_num_regs = I386_NUM_GREGS;
|
|
|
|
|
|
|
|
/* General-purpose register mapping for native 64-bit code. */
|
|
|
|
int *amd64_native_gregset64_reg_offset;
|
* x86-64-tdep.h: Tewak comment.
(enum amd64_regnum): New.
(X86_64_RAX_REGNUM, X86_64_RDX_REGNUM, X86_64_RDI_REGNUM)
(X86_64_RBP_REGNUM, X86_64_RSP_REGNUM, X86_64_RIP_REGNUM)
(X86_64_EFLAGS_REGNUM, X86_64_ST0_REGNUM, X86_64_XMM0_REGNUM)
(X86_64_XMM1_REGNUM): Removed.
(AMD64_NUM_GREGS): Renamed from X86_64_NUM_GREGS.
(amd64_init_abi, amd64_supply_fxsave, amd64_fill_fxsave): Adjust
prototypes for renamed functions.
* x86-64-tdep.c: Fix typo.
(amd64_dwarf_regmap): Use constants from `enum amd64_regnum' for
register numbers.
(amd64_return_value, amd64_push_arguments, amd64_push_dummy_call):
Use constants from `enum amd64_regnum' for register numbers.
(AMD64_NUM_SAVED_REGS): Adjust for renamed macros.
(amd64_analyze_prologue, amd64_frame_cache,
amd64_sigtramp_frame_cache): Use constants from `enum
amd64_regnum' for register numbers.
(amd64_supply_fpregset): Adjust for renamed functions.
(amd64_init_abi): Rename from x86_64_init_abi. Use constants from
`enum amd64_regnum' for register numbers.
(I387_ST0_REGNUM): Use constant from `enum amd64_regnum'.
(amd64_supply_fxsave): Rename from x86_64_supply_fxsave.
(amd64_fill_fxsave): Rename fro x86_64_fill_fxsave.
* x86-64-linux-tdep.c (amd64_linux_supply_gregset)
(amd64_linux_fill_gregset): Adjust for renamed macros.
(fetch_core_registers): Adjust for renamed functions.
(amd64_linux_init_abi): Adjust for renamed functions.
* x86-64-linux-nat.c (supply_gregset, fill_gregset): Adjust for
renamed functions.
* amd64-nat.c: Adjust for renamed macros.
* amd64bsd-nat.c (fetch_inferior_registers)
(store_inferior_registers): Use constants from `enum amd64_regnum'
for register numbers. Adjust for renamed variables.
* amd64fbsd-nat.c (supply_gregset, fill_gregset): Adjust for
renamed variables.
(_initialize_amd64fbsd_nat): Use constants from `enum
amd64_regnum' for register numbers.
* amd64fbsd-tdep.c (amd64fbsd_sigcontext_addr): Use constants from
`enum amd64_regnum' for register numbers.
(amd64fbsd_init_abi): Adjust for renamed functions.
* amd64nbsd-tdep.c (amd64nbsd_sigcontext_addr): Use constants from
`enum amd64_regnum' for register numbers.
(amd64nbsd_init_abi): Adjust for renamed functions.
(_initialize_amd64nbsd_ndep): Adjust for renamed macros.
* amd64obsd-tdep.c (amd64obsd_sigcontext_addr): Use constants from
`enum amd64_regnum' for register numbers.
(amd64obsd_init_abi): Adjust for renamed functions.
(_initialize_amd64obsd_ndep): Adjust for renamed macros.
2004-02-23 22:37:52 +01:00
|
|
|
int amd64_native_gregset64_num_regs = AMD64_NUM_GREGS;
|
2003-08-29 15:58:26 +02:00
|
|
|
|
|
|
|
/* Return the offset of REGNUM within the appropriate native
|
|
|
|
general-purpose register set. */
|
|
|
|
|
|
|
|
static int
|
2008-01-16 05:52:52 +01:00
|
|
|
amd64_native_gregset_reg_offset (struct gdbarch *gdbarch, int regnum)
|
2003-08-29 15:58:26 +02:00
|
|
|
{
|
|
|
|
int *reg_offset = amd64_native_gregset64_reg_offset;
|
|
|
|
int num_regs = amd64_native_gregset64_num_regs;
|
|
|
|
|
|
|
|
gdb_assert (regnum >= 0);
|
|
|
|
|
2008-01-16 05:52:52 +01:00
|
|
|
if (gdbarch_ptr_bit (gdbarch) == 32)
|
2003-08-29 15:58:26 +02:00
|
|
|
{
|
|
|
|
reg_offset = amd64_native_gregset32_reg_offset;
|
|
|
|
num_regs = amd64_native_gregset32_num_regs;
|
|
|
|
}
|
|
|
|
|
2008-01-16 05:52:52 +01:00
|
|
|
if (num_regs > gdbarch_num_regs (gdbarch))
|
|
|
|
num_regs = gdbarch_num_regs (gdbarch);
|
2003-08-29 15:58:26 +02:00
|
|
|
|
2008-01-16 05:52:52 +01:00
|
|
|
if (regnum < num_regs && regnum < gdbarch_num_regs (gdbarch))
|
2003-08-29 15:58:26 +02:00
|
|
|
return reg_offset[regnum];
|
|
|
|
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Return whether the native general-purpose register set supplies
|
|
|
|
register REGNUM. */
|
|
|
|
|
|
|
|
int
|
2008-01-16 05:52:52 +01:00
|
|
|
amd64_native_gregset_supplies_p (struct gdbarch *gdbarch, int regnum)
|
2003-08-29 15:58:26 +02:00
|
|
|
{
|
2008-01-16 05:52:52 +01:00
|
|
|
return (amd64_native_gregset_reg_offset (gdbarch, regnum) != -1);
|
2003-08-29 15:58:26 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
|
2004-06-26 12:38:50 +02:00
|
|
|
/* Supply register REGNUM, whose contents are stored in GREGS, to
|
2003-08-29 15:58:26 +02:00
|
|
|
REGCACHE. If REGNUM is -1, supply all appropriate registers. */
|
|
|
|
|
|
|
|
void
|
|
|
|
amd64_supply_native_gregset (struct regcache *regcache,
|
|
|
|
const void *gregs, int regnum)
|
|
|
|
{
|
|
|
|
const char *regs = gregs;
|
2004-02-22 00:50:40 +01:00
|
|
|
struct gdbarch *gdbarch = get_regcache_arch (regcache);
|
2003-08-29 15:58:26 +02:00
|
|
|
int num_regs = amd64_native_gregset64_num_regs;
|
|
|
|
int i;
|
|
|
|
|
2004-02-22 00:50:40 +01:00
|
|
|
if (gdbarch_ptr_bit (gdbarch) == 32)
|
2003-08-29 15:58:26 +02:00
|
|
|
num_regs = amd64_native_gregset32_num_regs;
|
|
|
|
|
2007-10-08 14:48:05 +02:00
|
|
|
if (num_regs > gdbarch_num_regs (gdbarch))
|
|
|
|
num_regs = gdbarch_num_regs (gdbarch);
|
2003-08-29 15:58:26 +02:00
|
|
|
|
|
|
|
for (i = 0; i < num_regs; i++)
|
|
|
|
{
|
|
|
|
if (regnum == -1 || regnum == i)
|
|
|
|
{
|
2008-01-16 05:52:52 +01:00
|
|
|
int offset = amd64_native_gregset_reg_offset (gdbarch, i);
|
2003-08-29 15:58:26 +02:00
|
|
|
|
|
|
|
if (offset != -1)
|
2004-02-22 00:50:40 +01:00
|
|
|
regcache_raw_supply (regcache, i, regs + offset);
|
2003-08-29 15:58:26 +02:00
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Collect register REGNUM from REGCACHE and store its contents in
|
|
|
|
GREGS. If REGNUM is -1, collect and store all appropriate
|
|
|
|
registers. */
|
|
|
|
|
|
|
|
void
|
|
|
|
amd64_collect_native_gregset (const struct regcache *regcache,
|
|
|
|
void *gregs, int regnum)
|
|
|
|
{
|
|
|
|
char *regs = gregs;
|
2004-02-22 00:50:40 +01:00
|
|
|
struct gdbarch *gdbarch = get_regcache_arch (regcache);
|
2003-08-29 15:58:26 +02:00
|
|
|
int num_regs = amd64_native_gregset64_num_regs;
|
|
|
|
int i;
|
|
|
|
|
2004-02-22 00:50:40 +01:00
|
|
|
if (gdbarch_ptr_bit (gdbarch) == 32)
|
2004-02-28 22:55:48 +01:00
|
|
|
{
|
|
|
|
num_regs = amd64_native_gregset32_num_regs;
|
|
|
|
|
|
|
|
/* Make sure %eax, %ebx, %ecx, %edx, %esi, %edi, %ebp, %esp and
|
|
|
|
%eip get zero-extended to 64 bits. */
|
|
|
|
for (i = 0; i <= I386_EIP_REGNUM; i++)
|
|
|
|
{
|
|
|
|
if (regnum == -1 || regnum == i)
|
2008-01-16 05:52:52 +01:00
|
|
|
memset (regs + amd64_native_gregset_reg_offset (gdbarch, i), 0, 8);
|
2004-02-28 22:55:48 +01:00
|
|
|
}
|
2004-03-02 16:58:59 +01:00
|
|
|
/* Ditto for %cs, %ss, %ds, %es, %fs, and %gs. */
|
|
|
|
for (i = I386_CS_REGNUM; i <= I386_GS_REGNUM; i++)
|
|
|
|
{
|
|
|
|
if (regnum == -1 || regnum == i)
|
2008-01-16 05:52:52 +01:00
|
|
|
memset (regs + amd64_native_gregset_reg_offset (gdbarch, i), 0, 8);
|
2004-03-02 16:58:59 +01:00
|
|
|
}
|
2004-02-28 22:55:48 +01:00
|
|
|
}
|
2003-08-29 15:58:26 +02:00
|
|
|
|
2007-10-08 14:48:05 +02:00
|
|
|
if (num_regs > gdbarch_num_regs (gdbarch))
|
|
|
|
num_regs = gdbarch_num_regs (gdbarch);
|
2003-08-29 15:58:26 +02:00
|
|
|
|
|
|
|
for (i = 0; i < num_regs; i++)
|
|
|
|
{
|
|
|
|
if (regnum == -1 || regnum == i)
|
|
|
|
{
|
2008-01-16 05:52:52 +01:00
|
|
|
int offset = amd64_native_gregset_reg_offset (gdbarch, i);
|
2003-08-29 15:58:26 +02:00
|
|
|
|
|
|
|
if (offset != -1)
|
2004-02-22 00:50:40 +01:00
|
|
|
regcache_raw_collect (regcache, i, regs + offset);
|
2003-08-29 15:58:26 +02:00
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|