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
;
33 /* A legacy unwinder to prop up architectures using the old style
35 extern const struct frame_unwind
*legacy_saved_regs_unwind
;
37 /* The frame object. */
41 /* The frame object's ID. This provides a per-frame unique identifier
42 that can be used to relocate a `struct frame_info' after a target
43 resume or a frame cache destruct. It of course assumes that the
44 inferior hasn't unwound the stack past that frame. */
48 /* The frame's stack address. This shall be constant through out
49 the lifetime of a frame. Note that this requirement applies to
50 not just the function body, but also the prologue and (in theory
51 at least) the epilogue. Since that value needs to fall either on
52 the boundary, or within the frame's address range, the frame's
53 outer-most address (the inner-most address of the previous frame)
54 is used. Watch out for all the legacy targets that still use the
55 function pointer register or stack pointer register. They are
57 /* NOTE: cagney/2002-11-16: The ia64 has two stacks and hence two
58 frame bases. This will need to be expanded to accomodate that. */
60 /* The frame's code address. This shall be constant through out the
61 lifetime of the frame. While the PC (a.k.a. resume address)
62 changes as the function is executed, this code address cannot.
63 Typically, it is set to the address of the entry point of the
64 frame's function (as returned by frame_func_unwind(). */
68 /* Methods for constructing and comparing Frame IDs.
70 NOTE: Given frameless functions A and B, where A calls B (and hence
71 B is inner-to A). The relationships: !eq(A,B); !eq(B,A);
72 !inner(A,B); !inner(B,A); all hold. This is because, while B is
73 inner to A, B is not strictly inner to A (being frameless, they
74 have the same .base value). */
76 /* For convenience. All fields are zero. */
77 extern const struct frame_id null_frame_id
;
79 /* Construct a frame ID. The first parameter is the frame's constant
80 stack address (typically the outer-bound), and the second the
81 frame's constant code address (typically the entry point) (or zero,
82 to indicate a wild card). */
83 extern struct frame_id
frame_id_build (CORE_ADDR stack_addr
,
86 /* Returns non-zero when L is a valid frame (a valid frame has a
88 extern int frame_id_p (struct frame_id l
);
90 /* Returns non-zero when L and R identify the same frame, or, if
91 either L or R have a zero .func, then the same frame base. */
92 extern int frame_id_eq (struct frame_id l
, struct frame_id r
);
94 /* Returns non-zero when L is strictly inner-than R (they have
95 different frame .bases). Neither L, nor R can be `null'. See note
96 above about frameless functions. */
97 extern int frame_id_inner (struct frame_id l
, struct frame_id r
);
99 /* Write the internal representation of a frame ID on the specified
101 extern void fprint_frame_id (struct ui_file
*file
, struct frame_id id
);
104 /* For every stopped thread, GDB tracks two frames: current and
105 selected. Current frame is the inner most frame of the selected
106 thread. Selected frame is the one being examined by the the GDB
107 CLI (selected using `up', `down', ...). The frames are created
108 on-demand (via get_prev_frame()) and then held in a frame cache. */
109 /* FIXME: cagney/2002-11-28: Er, there is a lie here. If you do the
110 sequence: `thread 1; up; thread 2; thread 1' you loose thread 1's
111 selected frame. At present GDB only tracks the selected frame of
112 the current thread. But be warned, that might change. */
113 /* FIXME: cagney/2002-11-14: At any time, only one thread's selected
114 and current frame can be active. Switching threads causes gdb to
115 discard all that cached frame information. Ulgh! Instead, current
116 and selected frame should be bound to a thread. */
118 /* On demand, create the inner most frame using information found in
119 the inferior. If the inner most frame can't be created, throw an
121 extern struct frame_info
*get_current_frame (void);
123 /* Invalidates the frame cache (this function should have been called
124 invalidate_cached_frames).
126 FIXME: cagney/2002-11-28: The only difference between
127 flush_cached_frames() and reinit_frame_cache() is that the latter
128 explicitly sets the selected frame back to the current frame there
129 isn't any real difference (except that one delays the selection of
130 a new frame). Code can instead simply rely on get_selected_frame()
131 to reinit's the selected frame as needed. As for invalidating the
132 cache, there should be two methods one that reverts the thread's
133 selected frame back to current frame (for when the inferior
134 resumes) and one that does not (for when the user modifies the
135 target invalidating the frame cache). */
136 extern void flush_cached_frames (void);
137 extern void reinit_frame_cache (void);
139 /* On demand, create the selected frame and then return it. If the
140 selected frame can not be created, this function throws an error. */
141 /* FIXME: cagney/2002-11-28: At present, when there is no selected
142 frame, this function always returns the current (inner most) frame.
143 It should instead, when a thread has previously had its frame
144 selected (but not resumed) and the frame cache invalidated, find
145 and then return that thread's previously selected frame. */
146 extern struct frame_info
*get_selected_frame (void);
148 /* Select a specific frame. NULL, apparently implies re-select the
150 extern void select_frame (struct frame_info
*);
152 /* Given a FRAME, return the next (more inner, younger) or previous
153 (more outer, older) frame. */
154 extern struct frame_info
*get_prev_frame (struct frame_info
*);
155 extern struct frame_info
*get_next_frame (struct frame_info
*);
157 /* Given a frame's ID, relocate the frame. Returns NULL if the frame
159 extern struct frame_info
*frame_find_by_id (struct frame_id id
);
161 /* Base attributes of a frame: */
163 /* The frame's `resume' address. Where the program will resume in
166 This replaced: frame->pc; */
167 extern CORE_ADDR
get_frame_pc (struct frame_info
*);
169 /* Following on from the `resume' address. Return the entry point
170 address of the function containing that resume address, or zero if
171 that function isn't known. */
172 extern CORE_ADDR
frame_func_unwind (struct frame_info
*fi
);
173 extern CORE_ADDR
get_frame_func (struct frame_info
*fi
);
175 /* Closely related to the resume address, various symbol table
176 attributes that are determined by the PC. Note that for a normal
177 frame, the PC refers to the resume address after the return, and
178 not the call instruction. In such a case, the address is adjusted
179 so that it (approximatly) identifies the call site (and not return
182 NOTE: cagney/2002-11-28: The frame cache could be used to cache the
183 computed value. Working on the assumption that the bottle-neck is
184 in the single step code, and that code causes the frame cache to be
185 constantly flushed, caching things in a frame is probably of little
186 benefit. As they say `show us the numbers'.
188 NOTE: cagney/2002-11-28: Plenty more where this one came from:
189 find_frame_block(), find_frame_partial_function(),
190 find_frame_symtab(), find_frame_function(). Each will need to be
191 carefully considered to determine if the real intent was for it to
192 apply to the PC or the adjusted PC. */
193 extern void find_frame_sal (struct frame_info
*frame
,
194 struct symtab_and_line
*sal
);
196 /* Return the frame base (what ever that is) (DEPRECATED).
198 Old code was trying to use this single method for two conflicting
199 purposes. Such code needs to be updated to use either of:
201 get_frame_id: A low level frame unique identifier, that consists of
202 both a stack and a function address, that can be used to uniquely
203 identify a frame. This value is determined by the frame's
204 low-level unwinder, the stack part [typically] being the
205 top-of-stack of the previous frame, and the function part being the
206 function's start address. Since the correct identification of a
207 frameless function requires both the a stack and function address,
208 the old get_frame_base method was not sufficient.
210 get_frame_base_address: get_frame_locals_address:
211 get_frame_args_address: A set of high-level debug-info dependant
212 addresses that fall within the frame. These addresses almost
213 certainly will not match the stack address part of a frame ID (as
214 returned by get_frame_base).
216 This replaced: frame->frame; */
218 extern CORE_ADDR
get_frame_base (struct frame_info
*);
220 /* Return the per-frame unique identifer. Can be used to relocate a
221 frame after a frame cache flush (and other similar operations). If
222 FI is NULL, return the null_frame_id. */
223 extern struct frame_id
get_frame_id (struct frame_info
*fi
);
225 /* Assuming that a frame is `normal', return its base-address, or 0 if
226 the information isn't available. NOTE: This address is really only
227 meaningful to the frame's high-level debug info. */
228 extern CORE_ADDR
get_frame_base_address (struct frame_info
*);
230 /* Assuming that a frame is `normal', return the base-address of the
231 local variables, or 0 if the information isn't available. NOTE:
232 This address is really only meaningful to the frame's high-level
233 debug info. Typically, the argument and locals share a single
235 extern CORE_ADDR
get_frame_locals_address (struct frame_info
*);
237 /* Assuming that a frame is `normal', return the base-address of the
238 parameter list, or 0 if that information isn't available. NOTE:
239 This address is really only meaningful to the frame's high-level
240 debug info. Typically, the argument and locals share a single
242 extern CORE_ADDR
get_frame_args_address (struct frame_info
*);
244 /* The frame's level: 0 for innermost, 1 for its caller, ...; or -1
245 for an invalid frame). */
246 extern int frame_relative_level (struct frame_info
*fi
);
248 /* Return the frame's type. Some are real, some are signal
249 trampolines, and some are completly artificial (dummy). */
253 /* The frame's type hasn't yet been defined. This is a catch-all
254 for legacy code that uses really strange technicques, such as
255 deprecated_set_frame_type, to set the frame's type. New code
256 should not use this value. */
258 /* A true stack frame, created by the target program during normal
261 /* A fake frame, created by GDB when performing an inferior function
264 /* In a signal handler, various OSs handle this in various ways.
265 The main thing is that the frame may be far from normal. */
268 extern enum frame_type
get_frame_type (struct frame_info
*);
270 /* FIXME: cagney/2002-11-10: Some targets want to directly mark a
271 frame as being of a specific type. This shouldn't be necessary.
272 PC_IN_SIGTRAMP() indicates a SIGTRAMP_FRAME and
273 DEPRECATED_PC_IN_CALL_DUMMY() indicates a DUMMY_FRAME. I suspect
274 the real problem here is that get_prev_frame() only sets
275 initialized after DEPRECATED_INIT_EXTRA_FRAME_INFO as been called.
276 Consequently, some targets found that the frame's type was wrong
277 and tried to fix it. The correct fix is to modify get_prev_frame()
278 so that it initializes the frame's type before calling any other
280 extern void deprecated_set_frame_type (struct frame_info
*,
281 enum frame_type type
);
283 /* Unwind the stack frame so that the value of REGNUM, in the previous
284 (up, older) frame is returned. If VALUEP is NULL, don't
285 fetch/compute the value. Instead just return the location of the
287 extern void frame_register_unwind (struct frame_info
*frame
, int regnum
,
288 int *optimizedp
, enum lval_type
*lvalp
,
289 CORE_ADDR
*addrp
, int *realnump
,
292 /* More convenient interface to frame_register_unwind(). */
293 /* NOTE: cagney/2002-09-13: Return void as one day these functions may
294 be changed to return an indication that the read succeeded. */
296 extern void frame_unwind_register (struct frame_info
*frame
,
297 int regnum
, void *buf
);
299 extern void frame_unwind_signed_register (struct frame_info
*frame
,
300 int regnum
, LONGEST
*val
);
302 extern void frame_unwind_unsigned_register (struct frame_info
*frame
,
303 int regnum
, ULONGEST
*val
);
305 /* Get the value of the register that belongs to this FRAME. This
306 function is a wrapper to the call sequence ``frame_unwind_register
307 (get_next_frame (FRAME))''. As per frame_register_unwind(), if
308 VALUEP is NULL, the registers value is not fetched/computed. */
310 extern void frame_register (struct frame_info
*frame
, int regnum
,
311 int *optimizedp
, enum lval_type
*lvalp
,
312 CORE_ADDR
*addrp
, int *realnump
,
315 /* More convenient interface to frame_register(). */
316 /* NOTE: cagney/2002-09-13: Return void as one day these functions may
317 be changed to return an indication that the read succeeded. */
319 extern void frame_read_register (struct frame_info
*frame
, int regnum
,
322 extern void frame_read_signed_register (struct frame_info
*frame
,
323 int regnum
, LONGEST
*val
);
325 extern void frame_read_unsigned_register (struct frame_info
*frame
,
326 int regnum
, ULONGEST
*val
);
328 /* Map between a frame register number and its name. A frame register
329 space is a superset of the cooked register space --- it also
330 includes builtin registers. If NAMELEN is negative, use the NAME's
331 length when doing the comparison. */
333 extern int frame_map_name_to_regnum (const char *name
, int namelen
);
334 extern const char *frame_map_regnum_to_name (int regnum
);
336 /* Unwind the PC. Strictly speaking return the resume address of the
337 calling frame. For GDB, `pc' is the resume address and not a
338 specific register. */
340 extern CORE_ADDR
frame_pc_unwind (struct frame_info
*frame
);
342 /* Discard the specified frame. Restoring the registers to the state
344 extern void frame_pop (struct frame_info
*frame
);
346 /* Return memory from the specified frame. A frame knows its thread /
347 LWP and hence can find its way down to a target. The assumption
348 here is that the current and previous frame share a common address
351 If the memory read fails, these methods throw an error.
353 NOTE: cagney/2003-06-03: Should there be unwind versions of these
354 methods? That isn't clear. Can code, for instance, assume that
355 this and the previous frame's memory or architecture are identical?
356 If architecture / memory changes are always separated by special
357 adaptor frames this should be ok. */
359 extern void get_frame_memory (struct frame_info
*this_frame
, CORE_ADDR addr
,
361 extern LONGEST
get_frame_memory_signed (struct frame_info
*this_frame
,
362 CORE_ADDR memaddr
, int len
);
363 extern ULONGEST
get_frame_memory_unsigned (struct frame_info
*this_frame
,
364 CORE_ADDR memaddr
, int len
);
366 /* Return this frame's architecture. */
368 extern struct gdbarch
*get_frame_arch (struct frame_info
*this_frame
);
371 /* Values for the source flag to be used in print_frame_info_base(). */
374 /* Print only the source line, like in stepi. */
376 /* Print only the location, i.e. level, address (sometimes)
377 function, args, file, line, line num. */
379 /* Print both of the above. */
381 /* Print location only, but always include the address. */
385 /* Allocate additional space for appendices to a struct frame_info.
386 NOTE: Much of GDB's code works on the assumption that the allocated
387 saved_regs[] array is the size specified below. If you try to make
388 that array smaller, GDB will happily walk off its end. */
390 #ifdef SIZEOF_FRAME_SAVED_REGS
391 #error "SIZEOF_FRAME_SAVED_REGS can not be re-defined"
393 #define SIZEOF_FRAME_SAVED_REGS \
394 (sizeof (CORE_ADDR) * (NUM_REGS+NUM_PSEUDO_REGS))
396 /* Allocate zero initialized memory from the frame cache obstack.
397 Appendices to the frame info (such as the unwind cache) should
398 allocate memory using this method. */
400 extern void *frame_obstack_zalloc (unsigned long size
);
401 #define FRAME_OBSTACK_ZALLOC(TYPE) ((TYPE *) frame_obstack_zalloc (sizeof (TYPE)))
402 #define FRAME_OBSTACK_CALLOC(NUMBER,TYPE) ((TYPE *) frame_obstack_zalloc ((NUMBER) * sizeof (TYPE)))
404 /* If legacy_frame_chain_valid() returns zero it means that the given
405 frame is the outermost one and has no caller.
407 This method has been superseeded by the per-architecture
408 frame_unwind_pc() (returns 0 to indicate an invalid return address)
409 and per-frame this_id() (returns a NULL frame ID to indicate an
411 extern int legacy_frame_chain_valid (CORE_ADDR
, struct frame_info
*);
413 extern void generic_save_dummy_frame_tos (CORE_ADDR sp
);
415 extern struct block
*get_frame_block (struct frame_info
*,
416 CORE_ADDR
*addr_in_block
);
418 /* Return the `struct block' that belongs to the selected thread's
419 selected frame. If the inferior has no state, return NULL.
421 NOTE: cagney/2002-11-29:
423 No state? Does the inferior have any execution state (a core file
424 does, an executable does not). At present the code tests
425 `target_has_stack' but I'm left wondering if it should test
426 `target_has_registers' or, even, a merged target_has_state.
428 Should it look at the most recently specified SAL? If the target
429 has no state, should this function try to extract a block from the
430 most recently selected SAL? That way `list foo' would give it some
431 sort of reference point. Then again, perhaphs that would confuse
434 Calls to this function can be broken down into two categories: Code
435 that uses the selected block as an additional, but optional, data
436 point; Code that uses the selected block as a prop, when it should
437 have the relevant frame/block/pc explicitly passed in.
439 The latter can be eliminated by correctly parameterizing the code,
440 the former though is more interesting. Per the "address" command,
441 it occures in the CLI code and makes it possible for commands to
442 work, even when the inferior has no state. */
444 extern struct block
*get_selected_block (CORE_ADDR
*addr_in_block
);
446 extern struct symbol
*get_frame_function (struct frame_info
*);
448 extern CORE_ADDR
frame_address_in_block (struct frame_info
*);
450 extern CORE_ADDR
get_pc_function_start (CORE_ADDR
);
452 extern int frameless_look_for_prologue (struct frame_info
*);
454 extern void print_frame_args (struct symbol
*, struct frame_info
*,
455 int, struct ui_file
*);
457 extern struct frame_info
*find_relative_frame (struct frame_info
*, int *);
459 extern void show_and_print_stack_frame (struct frame_info
*fi
, int level
,
462 extern void print_stack_frame (struct frame_info
*, int, int);
464 extern void show_stack_frame (struct frame_info
*);
466 extern void print_frame_info (struct frame_info
*, int, int, int);
468 extern void show_frame_info (struct frame_info
*, int, int, int);
470 extern struct frame_info
*block_innermost_frame (struct block
*);
472 /* NOTE: cagney/2002-09-13: There is no need for this function.
473 Instead either of frame_unwind_signed_register() or
474 frame_unwind_unsigned_register() can be used. */
475 extern CORE_ADDR
deprecated_read_register_dummy (CORE_ADDR pc
,
477 extern void generic_push_dummy_frame (void);
478 extern void generic_pop_current_frame (void (*)(struct frame_info
*));
479 extern void generic_pop_dummy_frame (void);
481 extern int generic_pc_in_call_dummy (CORE_ADDR pc
,
482 CORE_ADDR sp
, CORE_ADDR fp
);
484 /* NOTE: cagney/2002-06-26: Targets should no longer use this
485 function. Instead, the contents of a dummy frames registers can be
486 obtained by applying: frame_register_unwind to the dummy frame; or
487 frame_register_unwind() to the next outer frame. */
489 extern char *deprecated_generic_find_dummy_frame (CORE_ADDR pc
, CORE_ADDR fp
);
491 void generic_unwind_get_saved_register (char *raw_buffer
,
494 struct frame_info
*frame
,
496 enum lval_type
*lvalp
);
498 /* The function generic_get_saved_register() has been made obsolete.
499 DEPRECATED_GET_SAVED_REGISTER now defaults to the recursive
500 equivalent - generic_unwind_get_saved_register() - so there is no
501 need to even set DEPRECATED_GET_SAVED_REGISTER. Architectures that
502 need to override the register unwind mechanism should modify
504 extern void deprecated_generic_get_saved_register (char *, int *, CORE_ADDR
*,
505 struct frame_info
*, int,
508 extern void generic_save_call_dummy_addr (CORE_ADDR lo
, CORE_ADDR hi
);
510 /* FIXME: cagney/2003-02-02: Should be deprecated or replaced with a
511 function called frame_read_register_p(). This slightly weird (and
512 older) variant of frame_read_register() returns zero (indicating
513 the register is unavailable) if either: the register isn't cached;
514 or the register has been optimized out. Problem is, neither check
515 is exactly correct. A register can't be optimized out (it may not
516 have been saved as part of a function call); The fact that a
517 register isn't in the register cache doesn't mean that the register
518 isn't available (it could have been fetched from memory). */
520 extern int frame_register_read (struct frame_info
*frame
, int regnum
,
524 extern void args_info (char *, int);
526 extern void locals_info (char *, int);
528 extern void (*selected_frame_level_changed_hook
) (int);
530 extern void return_command (char *, int);
533 /* NOTE: cagney/2002-11-27:
535 You might think that the below global can simply be replaced by a
536 call to either get_selected_frame() or select_frame().
538 Unfortunatly, it isn't that easy.
540 The relevant code needs to be audited to determine if it is
541 possible (or pratical) to instead pass the applicable frame in as a
542 parameter. For instance, DEPRECATED_DO_REGISTERS_INFO() relied on
543 the deprecated_selected_frame global, while its replacement,
544 PRINT_REGISTERS_INFO(), is parameterized with the selected frame.
545 The only real exceptions occure at the edge (in the CLI code) where
546 user commands need to pick up the selected frame before proceeding.
548 This is important. GDB is trying to stamp out the hack:
550 saved_frame = deprecated_selected_frame;
551 deprecated_selected_frame = ...;
552 hack_using_global_selected_frame ();
553 deprecated_selected_frame = saved_frame;
557 extern struct frame_info
*deprecated_selected_frame
;
560 /* Create a frame using the specified BASE and PC. */
562 extern struct frame_info
*create_new_frame (CORE_ADDR base
, CORE_ADDR pc
);
565 /* Create/access the frame's `extra info'. The extra info is used by
566 older code to store information such as the analyzed prologue. The
567 zalloc() should only be called by the INIT_EXTRA_INFO method. */
569 extern struct frame_extra_info
*frame_extra_info_zalloc (struct frame_info
*fi
,
571 extern struct frame_extra_info
*get_frame_extra_info (struct frame_info
*fi
);
573 /* Create/access the frame's `saved_regs'. The saved regs are used by
574 older code to store the address of each register (except for
575 SP_REGNUM where the value of the register in the previous frame is
577 extern CORE_ADDR
*frame_saved_regs_zalloc (struct frame_info
*);
578 extern CORE_ADDR
*get_frame_saved_regs (struct frame_info
*);
580 /* FIXME: cagney/2002-12-06: Has the PC in the current frame changed?
581 "infrun.c", Thanks to DECR_PC_AFTER_BREAK, can change the PC after
582 the initial frame create. This puts things back in sync.
584 This replaced: frame->pc = ....; */
585 extern void deprecated_update_frame_pc_hack (struct frame_info
*frame
,
588 /* FIXME: cagney/2002-12-18: Has the frame's base changed? Or to be
589 more exact, whas that initial guess at the frame's base as returned
590 by deprecated_read_fp() wrong. If it was, fix it. This shouldn't
591 be necessary since the code should be getting the frame's base
592 correct from the outset.
594 This replaced: frame->frame = ....; */
595 extern void deprecated_update_frame_base_hack (struct frame_info
*frame
,
598 /* FIXME: cagney/2003-01-04: Explicitly set the frame's saved_regs
599 and/or extra_info. Target code is allocating a fake frame and than
600 initializing that to get around the problem of, when creating the
601 inner most frame, there is no where to cache information such as
602 the prologue analysis. This is fixed by the new unwind mechanism -
603 even the inner most frame has somewhere to store things like the
604 prolog analysis (or at least will once the frame overhaul is
606 extern void deprecated_set_frame_saved_regs_hack (struct frame_info
*frame
,
607 CORE_ADDR
*saved_regs
);
608 extern void deprecated_set_frame_extra_info_hack (struct frame_info
*frame
,
609 struct frame_extra_info
*extra_info
);
611 /* FIXME: cagney/2003-01-04: Allocate a frame from the heap (rather
612 than the frame obstack). Targets do this as a way of saving the
613 prologue analysis from the inner most frame before that frame has
614 been created. By always creating a frame, this problem goes away. */
615 extern struct frame_info
*deprecated_frame_xmalloc (void);
617 /* FIXME: cagney/2003-01-05: Allocate a frame, along with the
618 saved_regs and extra_info. Set up cleanups for all three. Same as
619 for deprecated_frame_xmalloc, targets are calling this when
620 creating a scratch `struct frame_info'. The frame overhaul makes
621 this unnecessary since all frame queries are parameterized with a
622 common cache parameter and a frame. */
623 extern struct frame_info
*deprecated_frame_xmalloc_with_cleanup (long sizeof_saved_regs
,
624 long sizeof_extra_info
);
626 /* FIXME: cagney/2003-01-07: These are just nasty. Code shouldn't be
627 doing this. I suspect it dates back to the days when every field
628 of an allocated structure was explicitly initialized. */
629 extern void deprecated_set_frame_next_hack (struct frame_info
*fi
,
630 struct frame_info
*next
);
631 extern void deprecated_set_frame_prev_hack (struct frame_info
*fi
,
632 struct frame_info
*prev
);
634 /* FIXME: cagney/2003-01-07: Instead of the dwarf2cfi having its own
635 dedicated `struct frame_info . context' field, the code should use
636 the per frame `unwind_cache' that is passed to the
637 frame_pc_unwind(), frame_register_unwind() and frame_id_unwind()
640 See "dummy-frame.c" for an example of how a cfi-frame object can be
641 implemented using this. */
642 extern struct context
*deprecated_get_frame_context (struct frame_info
*fi
);
643 extern void deprecated_set_frame_context (struct frame_info
*fi
,
644 struct context
*context
);
646 /* Return non-zero if the architecture is relying on legacy frame
648 extern int legacy_frame_p (struct gdbarch
*gdbarch
);
650 #endif /* !defined (FRAME_H) */