diff options
Diffstat (limited to 'gdb/frame.h')
| -rw-r--r-- | gdb/frame.h | 72 |
1 files changed, 69 insertions, 3 deletions
diff --git a/gdb/frame.h b/gdb/frame.h index f0631b01555..20ffff00daf 100644 --- a/gdb/frame.h +++ b/gdb/frame.h @@ -23,6 +23,29 @@ #if !defined (FRAME_H) #define FRAME_H 1 +/* Return the location (and possibly value) of REGNUM for the previous + (older, up) frame. All parameters except VALUEP can be assumed to + be non NULL. When VALUEP is NULL, just the location of the + register should be returned. + + UNWIND_CACHE is provided as mechanism for implementing a per-frame + local cache. It's initial value being NULL. Memory for that cache + should be allocated using frame_obstack_alloc(). + + Register window architectures (eg SPARC) should note that REGNUM + identifies the register for the previous frame. For instance, a + request for the value of "o1" for the previous frame would be found + in the register "i1" in this FRAME. */ + +typedef void (frame_register_unwind_ftype) (struct frame_info *frame, + void **unwind_cache, + int regnum, + int *optimized, + enum lval_type *lvalp, + CORE_ADDR *addrp, + int *realnump, + void *valuep); + /* Describe the saved registers of a frame. */ #if defined (EXTRA_FRAME_INFO) || defined (FRAME_FIND_SAVED_REGS) @@ -110,7 +133,12 @@ struct frame_info /* If dwarf2 unwind frame informations is used, this structure holds all related unwind data. */ - struct unwind_contect *context; + struct context *context; + + /* See description above. Return the register value for the + previous frame. */ + frame_register_unwind_ftype *register_unwind; + void *register_unwind_cache; /* Pointers to the next (down, inner) and previous (up, outer) frame_info's in the frame cache. */ @@ -222,6 +250,8 @@ extern struct symbol *get_frame_function (struct frame_info *); extern CORE_ADDR get_frame_pc (struct frame_info *); +extern CORE_ADDR frame_address_in_block (struct frame_info *); + extern CORE_ADDR get_pc_function_start (CORE_ADDR); extern struct block *block_for_pc (CORE_ADDR); @@ -246,7 +276,21 @@ extern void show_stack_frame (struct frame_info *); extern void select_frame (struct frame_info *); -extern void record_selected_frame (CORE_ADDR *, int *); +/* Return an ID that can be used to re-find a frame. */ + +struct frame_id +{ + /* The frame's address. This should be constant through out the + lifetime of a frame. */ + CORE_ADDR base; + /* The frame's current PC. While this changes, the function that + the PC falls into, does not. */ + CORE_ADDR pc; +}; + +extern void get_frame_id (struct frame_info *fi, struct frame_id *id); + +extern struct frame_info *frame_find_by_id (struct frame_id id); extern void print_frame_info (struct frame_info *, int, int, int); @@ -268,7 +312,13 @@ extern void generic_pop_dummy_frame (void); extern int generic_pc_in_call_dummy (CORE_ADDR pc, CORE_ADDR sp, CORE_ADDR fp); -extern char *generic_find_dummy_frame (CORE_ADDR pc, CORE_ADDR fp); + +/* NOTE: cagney/2002-06-26: Targets should no longer use this + function. Instead, the contents of a dummy frames registers can be + obtained by applying: frame_register_unwind to the dummy frame; or + get_saved_register to the next outer frame. */ + +extern char *deprecated_generic_find_dummy_frame (CORE_ADDR pc, CORE_ADDR fp); extern void generic_fix_call_dummy (char *dummy, CORE_ADDR pc, CORE_ADDR fun, int nargs, struct value **args, @@ -278,6 +328,22 @@ extern void generic_get_saved_register (char *, int *, CORE_ADDR *, struct frame_info *, int, enum lval_type *); +extern void generic_unwind_get_saved_register (char *raw_buffer, + int *optimized, + CORE_ADDR * addrp, + struct frame_info *frame, + int regnum, + enum lval_type *lval); + +/* Unwind the stack frame so that the value of REGNUM, in the previous + frame is returned. If VALUEP is NULL, don't fetch/compute the + value. Instead just return the location of the value. */ + +extern void frame_register_unwind (struct frame_info *frame, int regnum, + int *optimizedp, enum lval_type *lvalp, + CORE_ADDR *addrp, int *realnump, + void *valuep); + extern void generic_save_call_dummy_addr (CORE_ADDR lo, CORE_ADDR hi); extern void get_saved_register (char *raw_buffer, int *optimized, |