struct frame_unwind;
struct frame_id;
-/* GENERIC DUMMY FRAMES
-
- The following code serves to maintain the dummy stack frames for
- inferior function calls (ie. when gdb calls into the inferior via
- call_function_by_hand). This code saves the machine state before
- the call in host memory, so we must maintain an independent stack
- and keep it consistant etc. I am attempting to make this code
- generic enough to be used by many targets.
-
- The cheapest and most generic way to do CALL_DUMMY on a new target
- is probably to define CALL_DUMMY to be empty,
- DEPRECATED_CALL_DUMMY_LENGTH to zero, and CALL_DUMMY_LOCATION to
- AT_ENTRY. Then you must remember to define PUSH_RETURN_ADDRESS,
- because no call instruction will be being executed by the target.
- Also DEPRECATED_FRAME_CHAIN_VALID as
- generic_{file,func}_frame_chain_valid and do not set
- DEPRECATED_FIX_CALL_DUMMY. */
-
/* If the PC falls in a dummy frame, return a dummy frame
unwinder. */
extern const struct frame_unwind *dummy_frame_sniffer (struct frame_info *next_frame);
-/* Does the PC fall in a dummy frame?
-
- This function is used by "frame.c" when creating a new `struct
- frame_info'.
-
- Note that there is also very similar code in breakpoint.c (where
- the bpstat stop reason is computed). It is looking for a PC
- falling on a dummy_frame breakpoint. Perhaphs this, and that code
- should be combined?
-
- Architecture dependant code, that has access to a frame, should not
- use this function. Instead (get_frame_type() == DUMMY_FRAME)
- should be used.
-
- Hmm, but what about threads? When the dummy-frame code tries to
- relocate a dummy frame's saved registers it definitly needs to
- differentiate between threads (otherwize it will do things like
- clean-up the wrong threads frames). However, when just trying to
- identify a dummy-frame that shouldn't matter. The wost that can
- happen is that a thread is marked as sitting in a dummy frame when,
- in reality, its corrupted its stack, to the point that a PC is
- pointing into a dummy frame. */
-
-extern int pc_in_dummy_frame (CORE_ADDR pc);
-
-/* Return the regcache that belongs to the dummy-frame identifed by PC
- and FP, or NULL if no such frame exists. */
-/* FIXME: cagney/2002-11-08: The function only exists because of
- deprecated_generic_get_saved_register. Eliminate that function and
- this, to, can go. */
-
-extern struct regcache *deprecated_find_dummy_frame_regcache (CORE_ADDR pc,
- CORE_ADDR fp);
#endif /* !defined (DUMMY_FRAME_H) */