- prev = (struct frame_info *)
- obstack_alloc (&frame_cache_obstack,
- sizeof (struct frame_info));
-
- prev->saved_regs = NULL;
- if (next_frame)
- next_frame->prev = prev;
- prev->next = next_frame;
- prev->prev = (struct frame_info *) 0;
- prev->frame = address;
- prev->signal_handler_caller = 0;
-
-/* This change should not be needed, FIXME! We should
- determine whether any targets *need* INIT_FRAME_PC to happen
- after INIT_EXTRA_FRAME_INFO and come up with a simple way to
- express what goes on here.
-
- INIT_EXTRA_FRAME_INFO is called from two places: create_new_frame
- (where the PC is already set up) and here (where it isn't).
- INIT_FRAME_PC is only called from here, always after
- INIT_EXTRA_FRAME_INFO.
-
- The catch is the MIPS, where INIT_EXTRA_FRAME_INFO requires the PC
- value (which hasn't been set yet). Some other machines appear to
- require INIT_EXTRA_FRAME_INFO before they can do INIT_FRAME_PC. Phoo.
-
- We shouldn't need INIT_FRAME_PC_FIRST to add more complication to
- an already overcomplicated part of GDB. gnu@cygnus.com, 15Sep92.
-
- Assuming that some machines need INIT_FRAME_PC after
- INIT_EXTRA_FRAME_INFO, one possible scheme:
-
- SETUP_INNERMOST_FRAME()
- Default version is just create_new_frame (read_fp ()),
- read_pc ()). Machines with extra frame info would do that (or the
- local equivalent) and then set the extra fields.
- SETUP_ARBITRARY_FRAME(argc, argv)
- Only change here is that create_new_frame would no longer init extra
- frame info; SETUP_ARBITRARY_FRAME would have to do that.
- INIT_PREV_FRAME(fromleaf, prev)
- Replace INIT_EXTRA_FRAME_INFO and INIT_FRAME_PC. This should
- also return a flag saying whether to keep the new frame, or
- whether to discard it, because on some machines (e.g. mips) it
- is really awkward to have FRAME_CHAIN_VALID called *before*
- INIT_EXTRA_FRAME_INFO (there is no good way to get information
- deduced in FRAME_CHAIN_VALID into the extra fields of the new frame).
- std_frame_pc(fromleaf, prev)
- This is the default setting for INIT_PREV_FRAME. It just does what
- the default INIT_FRAME_PC does. Some machines will call it from
- INIT_PREV_FRAME (either at the beginning, the end, or in the middle).
- Some machines won't use it.
- kingdon@cygnus.com, 13Apr93, 31Jan94, 14Dec94. */
-
-#ifdef INIT_FRAME_PC_FIRST
- INIT_FRAME_PC_FIRST (fromleaf, prev);
-#endif
-
-#ifdef INIT_EXTRA_FRAME_INFO
- INIT_EXTRA_FRAME_INFO(fromleaf, prev);
-#endif
-
- /* This entry is in the frame queue now, which is good since
- FRAME_SAVED_PC may use that queue to figure out its value
- (see tm-sparc.h). We want the pc saved in the inferior frame. */
- INIT_FRAME_PC(fromleaf, prev);
-
- /* If ->frame and ->pc are unchanged, we are in the process of getting
- ourselves into an infinite backtrace. Some architectures check this
- in FRAME_CHAIN or thereabouts, but it seems like there is no reason
- this can't be an architecture-independent check. */
- if (next_frame != NULL)
- {
- if (prev->frame == next_frame->frame
- && prev->pc == next_frame->pc)
- {
- next_frame->prev = NULL;
- obstack_free (&frame_cache_obstack, prev);
- return NULL;
- }
- }
-
- find_pc_partial_function (prev->pc, &name,
- (CORE_ADDR *)NULL,(CORE_ADDR *)NULL);
- if (IN_SIGTRAMP (prev->pc, name))
- prev->signal_handler_caller = 1;
-
- return prev;
-}
-
-CORE_ADDR
-get_frame_pc (frame)
- struct frame_info *frame;
-{
- return frame->pc;
-}
-
-
-#ifdef FRAME_FIND_SAVED_REGS
-/* XXX - deprecated. This is a compatibility function for targets
- that do not yet implement FRAME_INIT_SAVED_REGS. */
-/* Find the addresses in which registers are saved in FRAME. */
-
-void
-get_frame_saved_regs (frame, saved_regs_addr)
- struct frame_info *frame;
- struct frame_saved_regs *saved_regs_addr;
-{
- if (frame->saved_regs == NULL)
- {
- frame->saved_regs = (CORE_ADDR*)
- frame_obstack_alloc (SIZEOF_FRAME_SAVED_REGS);
- }
- if (saved_regs_addr == NULL)
- {
- struct frame_saved_regs saved_regs;
- FRAME_FIND_SAVED_REGS (frame, saved_regs);
- memcpy (frame->saved_regs, &saved_regs, SIZEOF_FRAME_SAVED_REGS);
- }
- else
- {
- FRAME_FIND_SAVED_REGS (frame, *saved_regs_addr);
- memcpy (frame->saved_regs, saved_regs_addr, SIZEOF_FRAME_SAVED_REGS);
- }