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* arm-tdep.c (arm_make_stub_cache, arm_stub_this_id)

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(arm_stub_unwind, arm_stub_unwind_sniffer): New.
	(arm_gdbarch_init): Add arm_stub_unwind_sniffer.
This commit is contained in:
Daniel Jacobowitz 2005-03-03 15:14:09 +00:00
parent 5e1e041485
commit 909cf6ea0e
2 changed files with 57 additions and 0 deletions
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6
gdb/ChangeLog
View File

@ -1,3 +1,9 @@
2005-03-03 Daniel Jacobowitz <dan@codesourcery.com>
* arm-tdep.c (arm_make_stub_cache, arm_stub_this_id)
(arm_stub_unwind, arm_stub_unwind_sniffer): New.
(arm_gdbarch_init): Add arm_stub_unwind_sniffer.
2005-03-02 Daniel Jacobowitz <dan@codesourcery.com>
* linux-nat.c (linux_supports_tracevforkdone, child_follow_fork):

51
gdb/arm-tdep.c
View File

@ -1013,6 +1013,56 @@ arm_prologue_unwind_sniffer (struct frame_info *next_frame)
return &arm_prologue_unwind;
}
static struct arm_prologue_cache *
arm_make_stub_cache (struct frame_info *next_frame)
{
int reg;
struct arm_prologue_cache *cache;
CORE_ADDR unwound_fp;
cache = frame_obstack_zalloc (sizeof (struct arm_prologue_cache));
cache->saved_regs = trad_frame_alloc_saved_regs (next_frame);
cache->prev_sp = frame_unwind_register_unsigned (next_frame, ARM_SP_REGNUM);
return cache;
}
/* Our frame ID for a stub frame is the current SP and LR. */
static void
arm_stub_this_id (struct frame_info *next_frame,
void **this_cache,
struct frame_id *this_id)
{
struct arm_prologue_cache *cache;
if (*this_cache == NULL)
*this_cache = arm_make_stub_cache (next_frame);
cache = *this_cache;
*this_id = frame_id_build (cache->prev_sp,
frame_pc_unwind (next_frame));
}
struct frame_unwind arm_stub_unwind = {
NORMAL_FRAME,
arm_stub_this_id,
arm_prologue_prev_register
};
static const struct frame_unwind *
arm_stub_unwind_sniffer (struct frame_info *next_frame)
{
char dummy[4];
if (in_plt_section (frame_unwind_address_in_block (next_frame), NULL)
|| target_read_memory (frame_pc_unwind (next_frame), dummy, 4) != 0)
return &arm_stub_unwind;
return NULL;
}
static CORE_ADDR
arm_normal_frame_base (struct frame_info *next_frame, void **this_cache)
{
@ -2737,6 +2787,7 @@ arm_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
gdbarch_init_osabi (info, gdbarch);
/* Add some default predicates. */
frame_unwind_append_sniffer (gdbarch, arm_stub_unwind_sniffer);
frame_unwind_append_sniffer (gdbarch, arm_sigtramp_unwind_sniffer);
frame_unwind_append_sniffer (gdbarch, arm_prologue_unwind_sniffer);