/* FRAME_CHAIN takes a frame's nominal address
and produces the frame's chain-pointer.
- FRAME_CHAIN_COMBINE takes the chain pointer and the frame's nominal address
- and produces the nominal address of the caller frame.
-
However, if FRAME_CHAIN_VALID returns zero,
- it means the given frame is the outermost one and has no caller.
- In that case, FRAME_CHAIN_COMBINE is not used. */
+ it means the given frame is the outermost one and has no caller. */
/* In the case of the Merlin, the frame's nominal address is the FP value,
and at that address is saved previous FP value as a 4-byte word. */
#define FRAME_CHAIN_VALID(chain, thisframe) \
(chain != 0 && (outside_startup_file (FRAME_SAVED_PC (thisframe))))
-#define FRAME_CHAIN_COMBINE(chain, thisframe) (chain)
-
/* Define other aspects of the stack frame. */
#define FRAME_SAVED_PC(FRAME) (read_memory_integer ((FRAME)->frame + 4, 4))