/* Signal trampoline unwinder, for GDB the GNU Debugger.
- Copyright (C) 2004, 2007, 2008, 2009 Free Software Foundation, Inc.
+ Copyright (C) 2004-2019 Free Software Foundation, Inc.
This file is part of GDB.
#include "target.h"
#include "trad-frame.h"
#include "frame-base.h"
-#include "gdb_assert.h"
struct frame_data
{
tramp_frame_cache (struct frame_info *this_frame,
void **this_cache)
{
- CORE_ADDR pc = get_frame_pc (this_frame);
- struct tramp_frame_cache *tramp_cache = (*this_cache);
+ struct tramp_frame_cache *tramp_cache
+ = (struct tramp_frame_cache *) *this_cache;
+
if (tramp_cache->trad_cache == NULL)
{
tramp_cache->trad_cache = trad_frame_cache_zalloc (this_frame);
{
struct trad_frame_cache *trad_cache
= tramp_frame_cache (this_frame, this_cache);
+
trad_frame_get_id (trad_cache, this_id);
}
{
struct trad_frame_cache *trad_cache
= tramp_frame_cache (this_frame, this_cache);
+
return trad_frame_get_register (trad_cache, this_frame, prev_regnum);
}
tramp_frame_start (const struct tramp_frame *tramp,
struct frame_info *this_frame, CORE_ADDR pc)
{
+ struct gdbarch *gdbarch = get_frame_arch (this_frame);
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
int ti;
+
+ /* Check if we can use this trampoline. */
+ if (tramp->validate && !tramp->validate (tramp, this_frame, &pc))
+ return 0;
+
/* Search through the trampoline for one that matches the
instruction sequence around PC. */
for (ti = 0; tramp->insn[ti].bytes != TRAMP_SENTINEL_INSN; ti++)
{
CORE_ADDR func = pc - tramp->insn_size * ti;
int i;
+
for (i = 0; 1; i++)
{
gdb_byte buf[sizeof (tramp->insn[0])];
ULONGEST insn;
+
if (tramp->insn[i].bytes == TRAMP_SENTINEL_INSN)
return func;
if (!safe_frame_unwind_memory (this_frame,
func + i * tramp->insn_size,
buf, tramp->insn_size))
break;
- insn = extract_unsigned_integer (buf, tramp->insn_size);
+ insn = extract_unsigned_integer (buf, tramp->insn_size, byte_order);
if (tramp->insn[i].bytes != (insn & tramp->insn[i].mask))
break;
}
unwinder->type = tramp_frame->frame_type;
unwinder->unwind_data = data;
unwinder->sniffer = tramp_frame_sniffer;
+ unwinder->stop_reason = default_frame_unwind_stop_reason;
unwinder->this_id = tramp_frame_this_id;
unwinder->prev_register = tramp_frame_prev_register;
frame_unwind_prepend_unwinder (gdbarch, unwinder);