1 /* Definitions for dealing with stack frames, for GDB, the GNU debugger.
3 Copyright 1986, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1996,
4 1997, 1998, 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
6 This file is part of GDB.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 59 Temple Place - Suite 330,
21 Boston, MA 02111-1307, USA. */
23 #if !defined (FRAME_H)
26 struct symtab_and_line;
32 /* A legacy unwinder to prop up architectures using the old style
34 extern const struct frame_unwind *legacy_saved_regs_unwind;
36 /* The frame object. */
40 /* The frame object's ID. This provides a per-frame unique identifier
41 that can be used to relocate a `struct frame_info' after a target
42 resume or a frame cache destruct. It of course assumes that the
43 inferior hasn't unwound the stack past that frame. */
47 /* The frame's address. This should be constant through out the
48 lifetime of a frame. */
49 /* NOTE: cagney/2002-11-16: The ia64 has two stacks and hence two
50 frame bases. This will need to be expanded to accomodate that. */
52 /* The frame's current PC. While the PC within the function may
53 change, the function that contains the PC does not. Should this
54 instead be the frame's function? */
58 /* Methods for constructing and comparing Frame IDs.
60 NOTE: Given frameless functions A and B, where A calls B (and hence
61 B is inner-to A). The relationships: !eq(A,B); !eq(B,A);
62 !inner(A,B); !inner(B,A); all hold. This is because, while B is
63 inner to A, B is not strictly inner to A (being frameless, they
64 have the same .base value). */
66 /* For convenience. All fields are zero. */
67 extern const struct frame_id null_frame_id;
69 /* Construct a frame ID. The second parameter isn't yet well defined.
70 It might be the containing function, or the resume PC (see comment
71 above in `struct frame_id')? A func/pc of zero indicates a
72 wildcard (i.e., do not use func in frame ID comparisons). */
73 extern struct frame_id frame_id_build (CORE_ADDR base,
74 CORE_ADDR func_or_pc);
76 /* Returns non-zero when L is a valid frame (a valid frame has a
78 extern int frame_id_p (struct frame_id l);
80 /* Returns non-zero when L and R identify the same frame, or, if
81 either L or R have a zero .func, then the same frame base. */
82 extern int frame_id_eq (struct frame_id l, struct frame_id r);
84 /* Returns non-zero when L is strictly inner-than R (they have
85 different frame .bases). Neither L, nor R can be `null'. See note
86 above about frameless functions. */
87 extern int frame_id_inner (struct frame_id l, struct frame_id r);
90 /* For every stopped thread, GDB tracks two frames: current and
91 selected. Current frame is the inner most frame of the selected
92 thread. Selected frame is the one being examined by the the GDB
93 CLI (selected using `up', `down', ...). The frames are created
94 on-demand (via get_prev_frame()) and then held in a frame cache. */
95 /* FIXME: cagney/2002-11-28: Er, there is a lie here. If you do the
96 sequence: `thread 1; up; thread 2; thread 1' you loose thread 1's
97 selected frame. At present GDB only tracks the selected frame of
98 the current thread. But be warned, that might change. */
99 /* FIXME: cagney/2002-11-14: At any time, only one thread's selected
100 and current frame can be active. Switching threads causes gdb to
101 discard all that cached frame information. Ulgh! Instead, current
102 and selected frame should be bound to a thread. */
104 /* On demand, create the inner most frame using information found in
105 the inferior. If the inner most frame can't be created, throw an
107 extern struct frame_info *get_current_frame (void);
109 /* Invalidates the frame cache (this function should have been called
110 invalidate_cached_frames).
112 FIXME: cagney/2002-11-28: The only difference between
113 flush_cached_frames() and reinit_frame_cache() is that the latter
114 explicitly sets the selected frame back to the current frame there
115 isn't any real difference (except that one delays the selection of
116 a new frame). Code can instead simply rely on get_selected_frame()
117 to reinit's the selected frame as needed. As for invalidating the
118 cache, there should be two methods one that reverts the thread's
119 selected frame back to current frame (for when the inferior
120 resumes) and one that does not (for when the user modifies the
121 target invalidating the frame cache). */
122 extern void flush_cached_frames (void);
123 extern void reinit_frame_cache (void);
125 /* On demand, create the selected frame and then return it. If the
126 selected frame can not be created, this function throws an error. */
127 /* FIXME: cagney/2002-11-28: At present, when there is no selected
128 frame, this function always returns the current (inner most) frame.
129 It should instead, when a thread has previously had its frame
130 selected (but not resumed) and the frame cache invalidated, find
131 and then return that thread's previously selected frame. */
132 extern struct frame_info *get_selected_frame (void);
134 /* Select a specific frame. NULL, apparently implies re-select the
136 extern void select_frame (struct frame_info *);
138 /* Given a FRAME, return the next (more inner, younger) or previous
139 (more outer, older) frame. */
140 extern struct frame_info *get_prev_frame (struct frame_info *);
141 extern struct frame_info *get_next_frame (struct frame_info *);
143 /* Given a frame's ID, relocate the frame. Returns NULL if the frame
145 extern struct frame_info *frame_find_by_id (struct frame_id id);
147 /* Base attributes of a frame: */
149 /* The frame's `resume' address. Where the program will resume in
151 extern CORE_ADDR get_frame_pc (struct frame_info *);
153 /* Following on from the `resume' address. Return the entry point
154 address of the function containing that resume address, or zero if
155 that function isn't known. */
156 extern CORE_ADDR frame_func_unwind (struct frame_info *fi);
157 extern CORE_ADDR get_frame_func (struct frame_info *fi);
159 /* Closely related to the resume address, various symbol table
160 attributes that are determined by the PC. Note that for a normal
161 frame, the PC refers to the resume address after the return, and
162 not the call instruction. In such a case, the address is adjusted
163 so that it (approximatly) identifies the call site (and not return
166 NOTE: cagney/2002-11-28: The frame cache could be used to cache the
167 computed value. Working on the assumption that the bottle-neck is
168 in the single step code, and that code causes the frame cache to be
169 constantly flushed, caching things in a frame is probably of little
170 benefit. As they say `show us the numbers'.
172 NOTE: cagney/2002-11-28: Plenty more where this one came from:
173 find_frame_block(), find_frame_partial_function(),
174 find_frame_symtab(), find_frame_function(). Each will need to be
175 carefully considered to determine if the real intent was for it to
176 apply to the PC or the adjusted PC. */
177 extern void find_frame_sal (struct frame_info *frame,
178 struct symtab_and_line *sal);
180 /* Return the frame base (what ever that is) (DEPRECATED).
182 Old code was trying to use this single method for two conflicting
183 purposes. Such code needs to be updated to use either of:
185 get_frame_id: A low level frame unique identifier, that consists of
186 both a stack and a function address, that can be used to uniquely
187 identify a frame. This value is determined by the frame's
188 low-level unwinder, the stack part [typically] being the
189 top-of-stack of the previous frame, and the function part being the
190 function's start address. Since the correct identification of a
191 frameless function requires both the a stack and function address,
192 the old get_frame_base method was not sufficient.
194 get_frame_base_address: get_frame_locals_address:
195 get_frame_args_address: A set of high-level debug-info dependant
196 addresses that fall within the frame. These addresses almost
197 certainly will not match the stack address part of a frame ID (as
198 returned by get_frame_base). */
200 extern CORE_ADDR get_frame_base (struct frame_info *);
202 /* Return the per-frame unique identifer. Can be used to relocate a
203 frame after a frame cache flush (and other similar operations). If
204 FI is NULL, return the null_frame_id. */
205 extern struct frame_id get_frame_id (struct frame_info *fi);
207 /* Assuming that a frame is `normal', return its base-address, or 0 if
208 the information isn't available. NOTE: This address is really only
209 meaningful to the frame's high-level debug info. */
210 extern CORE_ADDR get_frame_base_address (struct frame_info *);
212 /* Assuming that a frame is `normal', return the base-address of the
213 local variables, or 0 if the information isn't available. NOTE:
214 This address is really only meaningful to the frame's high-level
215 debug info. Typically, the argument and locals share a single
217 extern CORE_ADDR get_frame_locals_address (struct frame_info *);
219 /* Assuming that a frame is `normal', return the base-address of the
220 parameter list, or 0 if that information isn't available. NOTE:
221 This address is really only meaningful to the frame's high-level
222 debug info. Typically, the argument and locals share a single
224 extern CORE_ADDR get_frame_args_address (struct frame_info *);
226 /* The frame's level: 0 for innermost, 1 for its caller, ...; or -1
227 for an invalid frame). */
228 extern int frame_relative_level (struct frame_info *fi);
230 /* Return the frame's type. Some are real, some are signal
231 trampolines, and some are completly artificial (dummy). */
235 /* The frame's type hasn't yet been defined. This is a catch-all
236 for legacy code that uses really strange technicques, such as
237 deprecated_set_frame_type, to set the frame's type. New code
238 should not use this value. */
240 /* A true stack frame, created by the target program during normal
243 /* A fake frame, created by GDB when performing an inferior function
246 /* In a signal handler, various OSs handle this in various ways.
247 The main thing is that the frame may be far from normal. */
250 extern enum frame_type get_frame_type (struct frame_info *);
252 /* FIXME: cagney/2002-11-10: Some targets want to directly mark a
253 frame as being of a specific type. This shouldn't be necessary.
254 PC_IN_SIGTRAMP() indicates a SIGTRAMP_FRAME and
255 DEPRECATED_PC_IN_CALL_DUMMY() indicates a DUMMY_FRAME. I suspect
256 the real problem here is that get_prev_frame() only sets
257 initialized after DEPRECATED_INIT_EXTRA_FRAME_INFO as been called.
258 Consequently, some targets found that the frame's type was wrong
259 and tried to fix it. The correct fix is to modify get_prev_frame()
260 so that it initializes the frame's type before calling any other
262 extern void deprecated_set_frame_type (struct frame_info *,
263 enum frame_type type);
265 /* Unwind the stack frame so that the value of REGNUM, in the previous
266 (up, older) frame is returned. If VALUEP is NULL, don't
267 fetch/compute the value. Instead just return the location of the
269 extern void frame_register_unwind (struct frame_info *frame, int regnum,
270 int *optimizedp, enum lval_type *lvalp,
271 CORE_ADDR *addrp, int *realnump,
274 /* More convenient interface to frame_register_unwind(). */
275 /* NOTE: cagney/2002-09-13: Return void as one day these functions may
276 be changed to return an indication that the read succeeded. */
278 extern void frame_unwind_register (struct frame_info *frame,
279 int regnum, void *buf);
281 extern void frame_unwind_signed_register (struct frame_info *frame,
282 int regnum, LONGEST *val);
284 extern void frame_unwind_unsigned_register (struct frame_info *frame,
285 int regnum, ULONGEST *val);
287 /* Get the value of the register that belongs to this FRAME. This
288 function is a wrapper to the call sequence ``frame_unwind_register
289 (get_next_frame (FRAME))''. As per frame_register_unwind(), if
290 VALUEP is NULL, the registers value is not fetched/computed. */
292 extern void frame_register (struct frame_info *frame, int regnum,
293 int *optimizedp, enum lval_type *lvalp,
294 CORE_ADDR *addrp, int *realnump,
297 /* More convenient interface to frame_register(). */
298 /* NOTE: cagney/2002-09-13: Return void as one day these functions may
299 be changed to return an indication that the read succeeded. */
301 extern void frame_read_register (struct frame_info *frame, int regnum,
304 extern void frame_read_signed_register (struct frame_info *frame,
305 int regnum, LONGEST *val);
307 extern void frame_read_unsigned_register (struct frame_info *frame,
308 int regnum, ULONGEST *val);
310 /* Map between a frame register number and its name. A frame register
311 space is a superset of the cooked register space --- it also
312 includes builtin registers. If NAMELEN is negative, use the NAME's
313 length when doing the comparison. */
315 extern int frame_map_name_to_regnum (const char *name, int namelen);
316 extern const char *frame_map_regnum_to_name (int regnum);
318 /* Unwind the PC. Strictly speaking return the resume address of the
319 calling frame. For GDB, `pc' is the resume address and not a
320 specific register. */
322 extern CORE_ADDR frame_pc_unwind (struct frame_info *frame);
324 /* Discard the specified frame. Restoring the registers to the state
326 extern void frame_pop (struct frame_info *frame);
328 /* We keep a cache of stack frames, each of which is a "struct
329 frame_info". The innermost one gets allocated (in
330 wait_for_inferior) each time the inferior stops; current_frame
331 points to it. Additional frames get allocated (in
332 get_prev_frame) as needed, and are chained through the next
333 and prev fields. Any time that the frame cache becomes invalid
334 (most notably when we execute something, but also if we change how
335 we interpret the frames (e.g. "set heuristic-fence-post" in
336 mips-tdep.c, or anything which reads new symbols)), we should call
337 reinit_frame_cache. */
341 /* Level of this frame. The inner-most (youngest) frame is at
342 level 0. As you move towards the outer-most (oldest) frame,
343 the level increases. This is a cached value. It could just as
344 easily be computed by counting back from the selected frame to
345 the inner most frame. */
346 /* NOTE: cagney/2002-04-05: Perhaphs a level of ``-1'' should be
347 reserved to indicate a bogus frame - one that has been created
348 just to keep GDB happy (GDB always needs a frame). For the
349 moment leave this as speculation. */
352 /* The frame's type. */
353 /* FIXME: cagney/2003-04-02: Should instead be returning
354 ->unwind->type. Unfortunatly, legacy code is still explicitly
355 setting the type using the method deprecated_set_frame_type.
356 Eliminate that method and this field can be eliminated. */
357 enum frame_type type;
359 /* For each register, address of where it was saved on entry to
360 the frame, or zero if it was not saved on entry to this frame.
361 This includes special registers such as pc and fp saved in
362 special ways in the stack frame. The SP_REGNUM is even more
363 special, the address here is the sp for the previous frame, not
364 the address where the sp was saved. */
365 /* Allocated by frame_saved_regs_zalloc () which is called /
366 initialized by DEPRECATED_FRAME_INIT_SAVED_REGS(). */
367 CORE_ADDR *saved_regs; /*NUM_REGS + NUM_PSEUDO_REGS*/
369 /* Anything extra for this structure that may have been defined
370 in the machine dependent files. */
371 /* Allocated by frame_extra_info_zalloc () which is called /
372 initialized by DEPRECATED_INIT_EXTRA_FRAME_INFO */
373 struct frame_extra_info *extra_info;
375 /* If dwarf2 unwind frame informations is used, this structure holds all
376 related unwind data. */
377 struct context *context;
379 /* The frame's low-level unwinder and corresponding cache. The
380 low-level unwinder is responsible for unwinding register values
381 for the previous frame. The low-level unwind methods are
382 selected based on the presence, or otherwize, of register
383 unwind information such as CFI. */
384 void *prologue_cache;
385 const struct frame_unwind *unwind;
387 /* Cached copy of the previous frame's resume address. */
393 /* Cached copy of the previous frame's function address. */
400 /* This frame's ID. Note that the frame's ID, base and PC contain
401 redundant information. */
405 /* The frame's high-level base methods, and corresponding cache.
406 The high level base methods are selected based on the frame's
408 const struct frame_base *base;
411 /* Pointers to the next (down, inner, younger) and previous (up,
412 outer, older) frame_info's in the frame cache. */
413 struct frame_info *next; /* down, inner, younger */
415 struct frame_info *prev; /* up, outer, older */
418 /* Values for the source flag to be used in print_frame_info_base(). */
421 /* Print only the source line, like in stepi. */
423 /* Print only the location, i.e. level, address (sometimes)
424 function, args, file, line, line num. */
426 /* Print both of the above. */
428 /* Print location only, but always include the address. */
432 /* Allocate additional space for appendices to a struct frame_info.
433 NOTE: Much of GDB's code works on the assumption that the allocated
434 saved_regs[] array is the size specified below. If you try to make
435 that array smaller, GDB will happily walk off its end. */
437 #ifdef SIZEOF_FRAME_SAVED_REGS
438 #error "SIZEOF_FRAME_SAVED_REGS can not be re-defined"
440 #define SIZEOF_FRAME_SAVED_REGS \
441 (sizeof (CORE_ADDR) * (NUM_REGS+NUM_PSEUDO_REGS))
443 /* Allocate zero initialized memory from the frame cache obstack.
444 Appendices to the frame info (such as the unwind cache) should
445 allocate memory using this method. */
447 extern void *frame_obstack_zalloc (unsigned long size);
448 #define FRAME_OBSTACK_ZALLOC(TYPE) ((TYPE *) frame_obstack_zalloc (sizeof (TYPE)))
450 /* If legacy_frame_chain_valid() returns zero it means that the given
451 frame is the outermost one and has no caller.
453 This method has been superseeded by the per-architecture
454 frame_unwind_pc() (returns 0 to indicate an invalid return address)
455 and per-frame this_id() (returns a NULL frame ID to indicate an
457 extern int legacy_frame_chain_valid (CORE_ADDR, struct frame_info *);
459 extern void generic_save_dummy_frame_tos (CORE_ADDR sp);
461 extern struct block *get_frame_block (struct frame_info *,
462 CORE_ADDR *addr_in_block);
464 /* Return the `struct block' that belongs to the selected thread's
465 selected frame. If the inferior has no state, return NULL.
467 NOTE: cagney/2002-11-29:
469 No state? Does the inferior have any execution state (a core file
470 does, an executable does not). At present the code tests
471 `target_has_stack' but I'm left wondering if it should test
472 `target_has_registers' or, even, a merged target_has_state.
474 Should it look at the most recently specified SAL? If the target
475 has no state, should this function try to extract a block from the
476 most recently selected SAL? That way `list foo' would give it some
477 sort of reference point. Then again, perhaphs that would confuse
480 Calls to this function can be broken down into two categories: Code
481 that uses the selected block as an additional, but optional, data
482 point; Code that uses the selected block as a prop, when it should
483 have the relevant frame/block/pc explicitly passed in.
485 The latter can be eliminated by correctly parameterizing the code,
486 the former though is more interesting. Per the "address" command,
487 it occures in the CLI code and makes it possible for commands to
488 work, even when the inferior has no state. */
490 extern struct block *get_selected_block (CORE_ADDR *addr_in_block);
492 extern struct symbol *get_frame_function (struct frame_info *);
494 extern CORE_ADDR frame_address_in_block (struct frame_info *);
496 extern CORE_ADDR get_pc_function_start (CORE_ADDR);
498 extern int frameless_look_for_prologue (struct frame_info *);
500 extern void print_frame_args (struct symbol *, struct frame_info *,
501 int, struct ui_file *);
503 extern struct frame_info *find_relative_frame (struct frame_info *, int *);
505 extern void show_and_print_stack_frame (struct frame_info *fi, int level,
508 extern void print_stack_frame (struct frame_info *, int, int);
510 extern void show_stack_frame (struct frame_info *);
512 extern void print_frame_info (struct frame_info *, int, int, int);
514 extern void show_frame_info (struct frame_info *, int, int, int);
516 extern struct frame_info *block_innermost_frame (struct block *);
518 /* NOTE: cagney/2002-09-13: There is no need for this function.
519 Instead either of frame_unwind_signed_register() or
520 frame_unwind_unsigned_register() can be used. */
521 extern CORE_ADDR deprecated_read_register_dummy (CORE_ADDR pc,
523 extern void generic_push_dummy_frame (void);
524 extern void generic_pop_current_frame (void (*)(struct frame_info *));
525 extern void generic_pop_dummy_frame (void);
527 extern int generic_pc_in_call_dummy (CORE_ADDR pc,
528 CORE_ADDR sp, CORE_ADDR fp);
530 /* NOTE: cagney/2002-06-26: Targets should no longer use this
531 function. Instead, the contents of a dummy frames registers can be
532 obtained by applying: frame_register_unwind to the dummy frame; or
533 frame_register_unwind() to the next outer frame. */
535 extern char *deprecated_generic_find_dummy_frame (CORE_ADDR pc, CORE_ADDR fp);
537 void generic_unwind_get_saved_register (char *raw_buffer,
540 struct frame_info *frame,
542 enum lval_type *lvalp);
544 /* The function generic_get_saved_register() has been made obsolete.
545 DEPRECATED_GET_SAVED_REGISTER now defaults to the recursive
546 equivalent - generic_unwind_get_saved_register() - so there is no
547 need to even set DEPRECATED_GET_SAVED_REGISTER. Architectures that
548 need to override the register unwind mechanism should modify
550 extern void deprecated_generic_get_saved_register (char *, int *, CORE_ADDR *,
551 struct frame_info *, int,
554 extern void generic_save_call_dummy_addr (CORE_ADDR lo, CORE_ADDR hi);
556 /* FIXME: cagney/2003-02-02: Should be deprecated or replaced with a
557 function called frame_read_register_p(). This slightly weird (and
558 older) variant of frame_read_register() returns zero (indicating
559 the register is unavailable) if either: the register isn't cached;
560 or the register has been optimized out. Problem is, neither check
561 is exactly correct. A register can't be optimized out (it may not
562 have been saved as part of a function call); The fact that a
563 register isn't in the register cache doesn't mean that the register
564 isn't available (it could have been fetched from memory). */
566 extern int frame_register_read (struct frame_info *frame, int regnum,
570 extern void args_info (char *, int);
572 extern void locals_info (char *, int);
574 extern void (*selected_frame_level_changed_hook) (int);
576 extern void return_command (char *, int);
579 /* NOTE: cagney/2002-11-27:
581 You might think that the below global can simply be replaced by a
582 call to either get_selected_frame() or select_frame().
584 Unfortunatly, it isn't that easy.
586 The relevant code needs to be audited to determine if it is
587 possible (or pratical) to instead pass the applicable frame in as a
588 parameter. For instance, DEPRECATED_DO_REGISTERS_INFO() relied on
589 the deprecated_selected_frame global, while its replacement,
590 PRINT_REGISTERS_INFO(), is parameterized with the selected frame.
591 The only real exceptions occure at the edge (in the CLI code) where
592 user commands need to pick up the selected frame before proceeding.
594 This is important. GDB is trying to stamp out the hack:
596 saved_frame = deprecated_selected_frame;
597 deprecated_selected_frame = ...;
598 hack_using_global_selected_frame ();
599 deprecated_selected_frame = saved_frame;
603 extern struct frame_info *deprecated_selected_frame;
606 /* Create a frame using the specified BASE and PC. */
608 extern struct frame_info *create_new_frame (CORE_ADDR base, CORE_ADDR pc);
611 /* Create/access the frame's `extra info'. The extra info is used by
612 older code to store information such as the analyzed prologue. The
613 zalloc() should only be called by the INIT_EXTRA_INFO method. */
615 extern struct frame_extra_info *frame_extra_info_zalloc (struct frame_info *fi,
617 extern struct frame_extra_info *get_frame_extra_info (struct frame_info *fi);
619 /* Create/access the frame's `saved_regs'. The saved regs are used by
620 older code to store the address of each register (except for
621 SP_REGNUM where the value of the register in the previous frame is
623 extern CORE_ADDR *frame_saved_regs_zalloc (struct frame_info *);
624 extern CORE_ADDR *get_frame_saved_regs (struct frame_info *);
626 /* FIXME: cagney/2002-12-06: Has the PC in the current frame changed?
627 "infrun.c", Thanks to DECR_PC_AFTER_BREAK, can change the PC after
628 the initial frame create. This puts things back in sync. */
629 extern void deprecated_update_frame_pc_hack (struct frame_info *frame,
632 /* FIXME: cagney/2002-12-18: Has the frame's base changed? Or to be
633 more exact, whas that initial guess at the frame's base as returned
634 by read_fp() wrong. If it was, fix it. This shouldn't be
635 necessary since the code should be getting the frame's base correct
637 extern void deprecated_update_frame_base_hack (struct frame_info *frame,
640 /* FIXME: cagney/2003-01-04: Explicitly set the frame's saved_regs
641 and/or extra_info. Target code is allocating a fake frame and than
642 initializing that to get around the problem of, when creating the
643 inner most frame, there is no where to cache information such as
644 the prologue analysis. This is fixed by the new unwind mechanism -
645 even the inner most frame has somewhere to store things like the
646 prolog analysis (or at least will once the frame overhaul is
648 extern void deprecated_set_frame_saved_regs_hack (struct frame_info *frame,
649 CORE_ADDR *saved_regs);
650 extern void deprecated_set_frame_extra_info_hack (struct frame_info *frame,
651 struct frame_extra_info *extra_info);
653 /* FIXME: cagney/2003-01-04: Allocate a frame from the heap (rather
654 than the frame obstack). Targets do this as a way of saving the
655 prologue analysis from the inner most frame before that frame has
656 been created. By always creating a frame, this problem goes away. */
657 extern struct frame_info *deprecated_frame_xmalloc (void);
659 /* FIXME: cagney/2003-01-05: Allocate a frame, along with the
660 saved_regs and extra_info. Set up cleanups for all three. Same as
661 for deprecated_frame_xmalloc, targets are calling this when
662 creating a scratch `struct frame_info'. The frame overhaul makes
663 this unnecessary since all frame queries are parameterized with a
664 common cache parameter and a frame. */
665 extern struct frame_info *deprecated_frame_xmalloc_with_cleanup (long sizeof_saved_regs,
666 long sizeof_extra_info);
668 /* FIXME: cagney/2003-01-07: These are just nasty. Code shouldn't be
669 doing this. I suspect it dates back to the days when every field
670 of an allocated structure was explicitly initialized. */
671 extern void deprecated_set_frame_next_hack (struct frame_info *fi,
672 struct frame_info *next);
673 extern void deprecated_set_frame_prev_hack (struct frame_info *fi,
674 struct frame_info *prev);
676 /* FIXME: cagney/2003-01-07: Instead of the dwarf2cfi having its own
677 dedicated `struct frame_info . context' field, the code should use
678 the per frame `unwind_cache' that is passed to the
679 frame_pc_unwind(), frame_register_unwind() and frame_id_unwind()
682 See "dummy-frame.c" for an example of how a cfi-frame object can be
683 implemented using this. */
684 extern struct context *deprecated_get_frame_context (struct frame_info *fi);
685 extern void deprecated_set_frame_context (struct frame_info *fi,
686 struct context *context);
688 /* Return non-zero if the architecture is relying on legacy frame
690 extern int legacy_frame_p (struct gdbarch *gdbarch);
692 #endif /* !defined (FRAME_H) */