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Re: [patch/rfc] Add a sentinel frame

+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));

Yes, but use TYPE_LENGTH (builtin_type_void_{code/data}_ptr).

+}
+
+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);

Andrew

+ return id;
+}
+


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