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2003-07-15 Michal Ludvig <mludvig@suse.cz>

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* x86-64-linux-nat.c (regmap): Removed.
	(supply_gregset, fill_gregset): Call
	x86_64_linux_(fill,supply)_gregset functions.
	* x86-64-linux-tdep.c (USER_*): New defines.
	(user_to_gdb_regmap, x86_64_core_fns): New structure.
	(x86_64_linux_supply_gregset, x86_64_linux_fill_gregset):
	New functions.
	(fetch_core_registers): Ditto.
	(_initialize_x86_64_linux_tdep): Call add_core_fns().
	* x86-64-linux-tdep.h: New file.
	* config/i386/x86-64linux.mh (NATDEPFILES): Remove corelow.o
	and core-regset.o.
	* config/i386/x86-64linux.mt (TDEPFILES): Add corelow.o.
This commit is contained in:
Michal Ludvig
2003-07-15 11:33:59 +00:00
parent 963ac3630d
commit eba29c8cbb
5 changed files with 134 additions and 32 deletions
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112
gdb/x86-64-linux-tdep.c
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@@ -30,6 +30,116 @@
#include "gdb_string.h"
#include "x86-64-tdep.h"
#include "x86-64-linux-tdep.h"
/* Register indexes to 'struct user' come from <sys/reg.h>. */
#define USER_R15 0
#define USER_R14 1
#define USER_R13 2
#define USER_R12 3
#define USER_RBP 4
#define USER_RBX 5
#define USER_R11 6
#define USER_R10 7
#define USER_R9 8
#define USER_R8 9
#define USER_RAX 10
#define USER_RCX 11
#define USER_RDX 12
#define USER_RSI 13
#define USER_RDI 14
#define USER_RIP 16
#define USER_CS 17
#define USER_EFLAGS 18
#define USER_RSP 19
#define USER_SS 20
#define USER_DS 23
#define USER_ES 24
#define USER_FS 25
#define USER_GS 26
/* Mapping between the general-purpose registers in `struct user'
format and GDB's register array layout. */
static int user_to_gdb_regmap[] =
{
USER_RAX, USER_RBX, USER_RCX, USER_RDX,
USER_RSI, USER_RDI, USER_RBP, USER_RSP,
USER_R8, USER_R9, USER_R10, USER_R11,
USER_R12, USER_R13, USER_R14, USER_R15,
USER_RIP, USER_EFLAGS, USER_CS, USER_SS,
USER_DS, USER_ES, USER_FS, USER_GS
};
/* Fill GDB's register array with the general-purpose register values
in *GREGSETP. */
void
x86_64_linux_supply_gregset (char *regp)
{
int i;
for (i = 0; i < X86_64_NUM_GREGS; i++)
supply_register (i, regp + (user_to_gdb_regmap[i] * 8));
}
/* Fill register REGNO (if it is a general-purpose register) in
*GREGSETPS with the value in GDB's register array. If REGNO is -1,
do this for all registers. */
void
x86_64_linux_fill_gregset (char *regp, int regno)
{
int i;
for (i = 0; i < X86_64_NUM_GREGS; i++)
if (regno == -1 || regno == i)
regcache_collect (i, regp + (user_to_gdb_regmap[i] * 8));
}
/* The register sets used in GNU/Linux ELF core-dumps are identical to
the register sets used by `ptrace'. The corresponding types are
`elf_gregset_t' for the general-purpose registers (with
`elf_greg_t' the type of a single GP register) and `elf_fpregset_t'
for the floating-point registers. */
static void
fetch_core_registers (char *core_reg_sect, unsigned core_reg_size,
int which, CORE_ADDR ignore)
{
switch (which)
{
case 0: /* Integer registers. */
if (core_reg_size != 216)
warning ("Wrong size register set in core file.");
else
x86_64_linux_supply_gregset (core_reg_sect);
break;
case 2: /* Floating point registers. */
case 3: /* "Extended" floating point registers. This is gdb-speak
for SSE/SSE2. */
if (core_reg_size != 512)
warning ("Wrong size XMM register set in core file.");
else
x86_64_supply_fxsave (core_reg_sect);
break;
default:
/* Don't know what kind of register request this is; just ignore it. */
break;
}
}
static struct core_fns x86_64_core_fns =
{
bfd_target_elf_flavour, /* core_flavour */
default_check_format, /* check_format */
default_core_sniffer, /* core_sniffer */
fetch_core_registers, /* core_read_registers */
NULL /* next */
};
#define LINUX_SIGTRAMP_INSN0 0x48 /* mov $NNNNNNNN, %rax */
#define LINUX_SIGTRAMP_OFFSET0 0
@@ -175,6 +285,8 @@ extern void _initialize_x86_64_linux_tdep (void);
void
_initialize_x86_64_linux_tdep (void)
{
add_core_fns (&x86_64_core_fns);
gdbarch_register_osabi (bfd_arch_i386, bfd_mach_x86_64, GDB_OSABI_LINUX,
x86_64_linux_init_abi);
}