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* x86-64-tdep.c (X86_64_NUM_SAVED_REGS): Set to X86_64_NUM_GREGS.

Browse Source 
(x86_64_sigtramp_frame_cache): Use `sc_reg_offset' to find saved
registers.

* x86-64-linux-tdep.c (x86_64_linux_sc_reg_offset): New variable.
(x86_64_linux_init_abi): Initialize TDEP->sc_reg_offset and
TDEP->sc_num_regs instead of TDEP->sc_pc_offset and
TDEP->sc_sp_offset.
This commit is contained in:
Mark Kettenis 2003-05-31 16:11:47 +00:00
parent a338618604
commit 2b5e07495d
3 changed files with 50 additions and 5 deletions
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9
gdb/ChangeLog
View File

@ -1,5 +1,14 @@
2003-05-31 Mark Kettenis <kettenis@gnu.org>
* x86-64-tdep.c (X86_64_NUM_SAVED_REGS): Set to X86_64_NUM_GREGS.
(x86_64_sigtramp_frame_cache): Use `sc_reg_offset' to find saved
registers.
* x86-64-linux-tdep.c (x86_64_linux_sc_reg_offset): New variable.
(x86_64_linux_init_abi): Initialize TDEP->sc_reg_offset and
TDEP->sc_num_regs instead of TDEP->sc_pc_offset and
TDEP->sc_sp_offset.
From Michal Ludvig <mludvig@suse.cz>:
* i386-tdep.h (struct gdbarch_tdep): Add members `sc_reg_offset'
and `sc_num_regs'.

36
gdb/x86-64-linux-tdep.c
View File

@ -123,6 +123,38 @@ x86_64_linux_sigcontext_addr (struct frame_info *next_frame)
}
/* From <asm/sigcontext.h>. */
static int x86_64_linux_sc_reg_offset[X86_64_NUM_GREGS] =
{
13 * 8, /* %rax */
11 * 8, /* %rbx */
14 * 8, /* %rcx */
12 * 8, /* %rdx */
9 * 8, /* %rsi */
8 * 8, /* %rdi */
10 * 8, /* %rbp */
15 * 8, /* %rsp */
0 * 8, /* %r8 */
1 * 8, /* %r9 */
2 * 8, /* %r10 */
3 * 8, /* %r11 */
4 * 8, /* %r12 */
5 * 8, /* %r13 */
6 * 8, /* %r14 */
7 * 8, /* %r15 */
16 * 8, /* %rip */
17 * 8, /* %eflags */
-1, /* %ds */
-1, /* %es */
/* FIXME: kettenis/2002030531: The registers %fs and %gs are
available in `struct sigcontext'. However, they only occupy two
bytes instead of four, which makes using them here rather
difficult. Leave them out for now. */
-1, /* %fs */
-1 /* %gs */
};
static void
x86_64_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
@ -132,8 +164,8 @@ x86_64_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
set_gdbarch_pc_in_sigtramp (gdbarch, x86_64_linux_pc_in_sigtramp);
tdep->sigcontext_addr = x86_64_linux_sigcontext_addr;
tdep->sc_pc_offset = 16 * 8; /* From <asm/sigcontext.h>. */
tdep->sc_sp_offset = 15 * 8;
tdep->sc_reg_offset = x86_64_linux_sc_reg_offset;
tdep->sc_num_regs = X86_64_NUM_GREGS;
}

10
gdb/x86-64-tdep.c
View File

@ -787,7 +787,7 @@ x86_64_push_dummy_call (struct gdbarch *gdbarch, struct regcache *regcache,
/* The maximum number of saved registers. This should include %rip. */
#define X86_64_NUM_SAVED_REGS 17
#define X86_64_NUM_SAVED_REGS X86_64_NUM_GREGS
struct x86_64_frame_cache
{
@ -1035,6 +1035,7 @@ x86_64_sigtramp_frame_cache (struct frame_info *next_frame, void **this_cache)
struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
CORE_ADDR addr;
char buf[8];
int i;
if (*this_cache)
return *this_cache;
@ -1045,8 +1046,11 @@ x86_64_sigtramp_frame_cache (struct frame_info *next_frame, void **this_cache)
cache->base = extract_unsigned_integer (buf, 8) - 8;
addr = tdep->sigcontext_addr (next_frame);
cache->saved_regs[X86_64_RIP_REGNUM] = addr + tdep->sc_pc_offset;
cache->saved_regs[X86_64_RSP_REGNUM] = addr + tdep->sc_sp_offset;
gdb_assert (tdep->sc_reg_offset);
gdb_assert (tdep->sc_num_regs <= X86_64_NUM_SAVED_REGS);
for (i = 0; i < tdep->sc_num_regs; i++)
if (tdep->sc_reg_offset[i] != -1)
cache->saved_regs[i] = addr + tdep->sc_reg_offset[i];
*this_cache = cache;
return cache;