Toolchain/binutils-gdb
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2004-03-21 Andrew Cagney <cagney@redhat.com>

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* frame-unwind.h: Update copyright.
	(struct frame_data): Add opaque declaration.
	(frame_sniffer_ftype): Declare.
	(struct frame_unwind): Add "unwind_data" and "sniffer".
	(frame_unwind_register_unwinder): Declare.
	(frame_unwind_find_by_frame): Add parameter "this_cache".
	* frame.c (get_frame_id, create_new_frame, legacy_get_prev_frame)
	(legacy_get_prev_frame, legacy_get_prev_frame)
	(get_frame_type): Pass the prologue_cache to
	frame_unwind_find_by_frame.
	* frame-unwind.c (struct frame_unwind_table_entry): Add field
	"unwinder".
	(frame_unwind_register_unwinder): New function.
	(frame_unwind_find_by_frame): Handle an unwind sniffer.
This commit is contained in:
Andrew Cagney
2004-03-21 22:28:52 +00:00
parent e5fbc737f6
commit 82417da5f0
4 changed files with 77 additions and 15 deletions
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31
gdb/frame-unwind.c
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@@ -31,6 +31,7 @@ static struct gdbarch_data *frame_unwind_data;
struct frame_unwind_table_entry
{
frame_unwind_sniffer_ftype *sniffer;
const struct frame_unwind *unwinder;
struct frame_unwind_table_entry *next;
};
@@ -61,8 +62,19 @@ frame_unwind_append_sniffer (struct gdbarch *gdbarch,
table->tail = &((*table->tail)->next);
}
void
frame_unwind_register_unwinder (struct gdbarch *gdbarch,
const struct frame_unwind *unwinder)
{
struct frame_unwind_table *table = gdbarch_data (gdbarch, frame_unwind_data);
(*table->tail) = GDBARCH_OBSTACK_ZALLOC (gdbarch,
struct frame_unwind_table_entry);
(*table->tail)->unwinder = unwinder;
table->tail = &((*table->tail)->next);
}
const struct frame_unwind *
frame_unwind_find_by_frame (struct frame_info *next_frame)
frame_unwind_find_by_frame (struct frame_info *next_frame, void **this_cache)
{
int i;
struct gdbarch *gdbarch = get_frame_arch (next_frame);
@@ -76,10 +88,19 @@ frame_unwind_find_by_frame (struct frame_info *next_frame)
return legacy_saved_regs_unwind;
for (entry = table->head; entry != NULL; entry = entry->next)
{
const struct frame_unwind *desc;
desc = entry->sniffer (next_frame);
if (desc != NULL)
return desc;
if (entry->sniffer != NULL)
{
const struct frame_unwind *desc = NULL;
desc = entry->sniffer (next_frame);
if (desc != NULL)
return desc;
}
if (entry->unwinder != NULL)
{
if (entry->unwinder->sniffer (entry->unwinder, next_frame,
this_cache))
return entry->unwinder;
}
}
return legacy_saved_regs_unwind;
}