* 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.
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@ -1,3 +1,9 @@
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2005-03-03 Daniel Jacobowitz <dan@codesourcery.com>
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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.
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(arm_gdbarch_init): Add arm_stub_unwind_sniffer.
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2005-03-02 Daniel Jacobowitz <dan@codesourcery.com>
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* linux-nat.c (linux_supports_tracevforkdone, child_follow_fork):
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@ -1013,6 +1013,56 @@ arm_prologue_unwind_sniffer (struct frame_info *next_frame)
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return &arm_prologue_unwind;
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}
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static struct arm_prologue_cache *
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arm_make_stub_cache (struct frame_info *next_frame)
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{
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int reg;
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struct arm_prologue_cache *cache;
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CORE_ADDR unwound_fp;
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cache = frame_obstack_zalloc (sizeof (struct arm_prologue_cache));
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cache->saved_regs = trad_frame_alloc_saved_regs (next_frame);
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cache->prev_sp = frame_unwind_register_unsigned (next_frame, ARM_SP_REGNUM);
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return cache;
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}
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/* Our frame ID for a stub frame is the current SP and LR. */
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static void
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arm_stub_this_id (struct frame_info *next_frame,
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void **this_cache,
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struct frame_id *this_id)
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{
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struct arm_prologue_cache *cache;
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if (*this_cache == NULL)
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*this_cache = arm_make_stub_cache (next_frame);
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cache = *this_cache;
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*this_id = frame_id_build (cache->prev_sp,
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frame_pc_unwind (next_frame));
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}
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struct frame_unwind arm_stub_unwind = {
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NORMAL_FRAME,
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arm_stub_this_id,
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arm_prologue_prev_register
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};
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static const struct frame_unwind *
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arm_stub_unwind_sniffer (struct frame_info *next_frame)
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{
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char dummy[4];
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if (in_plt_section (frame_unwind_address_in_block (next_frame), NULL)
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|| target_read_memory (frame_pc_unwind (next_frame), dummy, 4) != 0)
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return &arm_stub_unwind;
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return NULL;
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}
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static CORE_ADDR
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arm_normal_frame_base (struct frame_info *next_frame, void **this_cache)
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{
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@ -2737,6 +2787,7 @@ arm_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
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gdbarch_init_osabi (info, gdbarch);
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/* Add some default predicates. */
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frame_unwind_append_sniffer (gdbarch, arm_stub_unwind_sniffer);
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frame_unwind_append_sniffer (gdbarch, arm_sigtramp_unwind_sniffer);
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frame_unwind_append_sniffer (gdbarch, arm_prologue_unwind_sniffer);
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