Re: [patch/rfc] Add a sentinel frame

[Michal Ludvig <mludvig@suse.cz>]

Andrew Cagney wrote:
> This method needs to unwind register value's from the NEXT_FRAME and 
> then use that to determine the dummy frame's ID.  The d10v's 
> implementation (not yet committed) looks like:

So could that be something like this? So far it works pretty well...

+static void
+x86_64_save_dummy_frame_tos (CORE_ADDR sp)
+{
+  /* We must add the size of the return address that is already
+     put on the stack.  */
+  generic_save_dummy_frame_tos (sp + sizeof(CORE_ADDR));
+}
+
+struct frame_id
+x86_64_unwind_dummy_id (struct gdbarch *gdbarch, struct frame_info *frame)
+{
+  struct frame_id id;
+
+  id.pc = frame_pc_unwind (frame);
+  frame_unwind_unsigned_register (frame, SP_REGNUM, &id.base);
+
+  return id;
+}
+

Michal Ludvig
-- 
* SuSE CR, s.r.o     * mludvig@suse.cz
* (+420) 296.545.373 * http://www.suse.cz