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ed3ef339 DE |
1 | /* Scheme interface to stack frames. |
2 | ||
618f726f | 3 | Copyright (C) 2008-2016 Free Software Foundation, Inc. |
ed3ef339 DE |
4 | |
5 | This file is part of GDB. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 3 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
19 | ||
20 | /* See README file in this directory for implementation notes, coding | |
21 | conventions, et.al. */ | |
22 | ||
23 | #include "defs.h" | |
24 | #include "block.h" | |
25 | #include "frame.h" | |
ed3ef339 DE |
26 | #include "inferior.h" |
27 | #include "objfiles.h" | |
28 | #include "symfile.h" | |
29 | #include "symtab.h" | |
30 | #include "stack.h" | |
f2983cc3 | 31 | #include "user-regs.h" |
ed3ef339 DE |
32 | #include "value.h" |
33 | #include "guile-internal.h" | |
34 | ||
35 | /* The <gdb:frame> smob. | |
36 | The typedef for this struct is in guile-internal.h. */ | |
37 | ||
38 | struct _frame_smob | |
39 | { | |
40 | /* This always appears first. */ | |
41 | eqable_gdb_smob base; | |
42 | ||
43 | struct frame_id frame_id; | |
44 | struct gdbarch *gdbarch; | |
45 | ||
46 | /* Frames are tracked by inferior. | |
47 | We need some place to put the eq?-able hash table, and this feels as | |
48 | good a place as any. Frames in one inferior shouldn't be considered | |
49 | equal to frames in a different inferior. The frame becomes invalid if | |
50 | this becomes NULL (the inferior has been deleted from gdb). | |
51 | It's easier to relax restrictions than impose them after the fact. | |
52 | N.B. It is an outstanding question whether a frame survives reruns of | |
53 | the inferior. Intuitively the answer is "No", but currently a frame | |
54 | also survives, e.g., multiple invocations of the same function from | |
55 | the same point. Even different threads can have the same frame, e.g., | |
56 | if a thread dies and a new thread gets the same stack. */ | |
57 | struct inferior *inferior; | |
58 | ||
59 | /* Marks that the FRAME_ID member actually holds the ID of the frame next | |
60 | to this, and not this frame's ID itself. This is a hack to permit Scheme | |
61 | frame objects which represent invalid frames (i.e., the last frame_info | |
62 | in a corrupt stack). The problem arises from the fact that this code | |
63 | relies on FRAME_ID to uniquely identify a frame, which is not always true | |
64 | for the last "frame" in a corrupt stack (it can have a null ID, or the | |
65 | same ID as the previous frame). Whenever get_prev_frame returns NULL, we | |
66 | record the frame_id of the next frame and set FRAME_ID_IS_NEXT to 1. */ | |
67 | int frame_id_is_next; | |
68 | }; | |
69 | ||
70 | static const char frame_smob_name[] = "gdb:frame"; | |
71 | ||
72 | /* The tag Guile knows the frame smob by. */ | |
73 | static scm_t_bits frame_smob_tag; | |
74 | ||
75 | /* Keywords used in argument passing. */ | |
76 | static SCM block_keyword; | |
77 | ||
78 | static const struct inferior_data *frscm_inferior_data_key; | |
79 | \f | |
80 | /* Administrivia for frame smobs. */ | |
81 | ||
82 | /* Helper function to hash a frame_smob. */ | |
83 | ||
84 | static hashval_t | |
85 | frscm_hash_frame_smob (const void *p) | |
86 | { | |
9a3c8263 | 87 | const frame_smob *f_smob = (const frame_smob *) p; |
ed3ef339 DE |
88 | const struct frame_id *fid = &f_smob->frame_id; |
89 | hashval_t hash = htab_hash_pointer (f_smob->inferior); | |
90 | ||
91 | if (fid->stack_status == FID_STACK_VALID) | |
92 | hash = iterative_hash (&fid->stack_addr, sizeof (fid->stack_addr), hash); | |
93 | if (fid->code_addr_p) | |
94 | hash = iterative_hash (&fid->code_addr, sizeof (fid->code_addr), hash); | |
95 | if (fid->special_addr_p) | |
96 | hash = iterative_hash (&fid->special_addr, sizeof (fid->special_addr), | |
97 | hash); | |
98 | ||
99 | return hash; | |
100 | } | |
101 | ||
102 | /* Helper function to compute equality of frame_smobs. */ | |
103 | ||
104 | static int | |
105 | frscm_eq_frame_smob (const void *ap, const void *bp) | |
106 | { | |
9a3c8263 SM |
107 | const frame_smob *a = (const frame_smob *) ap; |
108 | const frame_smob *b = (const frame_smob *) bp; | |
ed3ef339 DE |
109 | |
110 | return (frame_id_eq (a->frame_id, b->frame_id) | |
111 | && a->inferior == b->inferior | |
112 | && a->inferior != NULL); | |
113 | } | |
114 | ||
115 | /* Return the frame -> SCM mapping table. | |
116 | It is created if necessary. */ | |
117 | ||
118 | static htab_t | |
119 | frscm_inferior_frame_map (struct inferior *inferior) | |
120 | { | |
9a3c8263 | 121 | htab_t htab = (htab_t) inferior_data (inferior, frscm_inferior_data_key); |
ed3ef339 DE |
122 | |
123 | if (htab == NULL) | |
124 | { | |
125 | htab = gdbscm_create_eqable_gsmob_ptr_map (frscm_hash_frame_smob, | |
126 | frscm_eq_frame_smob); | |
127 | set_inferior_data (inferior, frscm_inferior_data_key, htab); | |
128 | } | |
129 | ||
130 | return htab; | |
131 | } | |
132 | ||
ed3ef339 DE |
133 | /* The smob "free" function for <gdb:frame>. */ |
134 | ||
135 | static size_t | |
136 | frscm_free_frame_smob (SCM self) | |
137 | { | |
138 | frame_smob *f_smob = (frame_smob *) SCM_SMOB_DATA (self); | |
139 | ||
140 | if (f_smob->inferior != NULL) | |
141 | { | |
142 | htab_t htab = frscm_inferior_frame_map (f_smob->inferior); | |
143 | ||
144 | gdbscm_clear_eqable_gsmob_ptr_slot (htab, &f_smob->base); | |
145 | } | |
146 | ||
147 | /* Not necessary, done to catch bugs. */ | |
148 | f_smob->inferior = NULL; | |
149 | ||
150 | return 0; | |
151 | } | |
152 | ||
153 | /* The smob "print" function for <gdb:frame>. */ | |
154 | ||
155 | static int | |
156 | frscm_print_frame_smob (SCM self, SCM port, scm_print_state *pstate) | |
157 | { | |
158 | frame_smob *f_smob = (frame_smob *) SCM_SMOB_DATA (self); | |
159 | struct ui_file *strfile; | |
ed3ef339 DE |
160 | |
161 | gdbscm_printf (port, "#<%s ", frame_smob_name); | |
162 | ||
163 | strfile = mem_fileopen (); | |
164 | fprint_frame_id (strfile, f_smob->frame_id); | |
3ab692db PA |
165 | std::string s = ui_file_as_string (strfile); |
166 | gdbscm_printf (port, "%s", s.c_str ()); | |
ed3ef339 | 167 | ui_file_delete (strfile); |
ed3ef339 DE |
168 | |
169 | scm_puts (">", port); | |
170 | ||
171 | scm_remember_upto_here_1 (self); | |
172 | ||
173 | /* Non-zero means success. */ | |
174 | return 1; | |
175 | } | |
176 | ||
177 | /* Low level routine to create a <gdb:frame> object. */ | |
178 | ||
179 | static SCM | |
180 | frscm_make_frame_smob (void) | |
181 | { | |
182 | frame_smob *f_smob = (frame_smob *) | |
183 | scm_gc_malloc (sizeof (frame_smob), frame_smob_name); | |
184 | SCM f_scm; | |
185 | ||
186 | f_smob->frame_id = null_frame_id; | |
187 | f_smob->gdbarch = NULL; | |
188 | f_smob->inferior = NULL; | |
189 | f_smob->frame_id_is_next = 0; | |
190 | f_scm = scm_new_smob (frame_smob_tag, (scm_t_bits) f_smob); | |
1254eefc | 191 | gdbscm_init_eqable_gsmob (&f_smob->base, f_scm); |
ed3ef339 DE |
192 | |
193 | return f_scm; | |
194 | } | |
195 | ||
196 | /* Return non-zero if SCM is a <gdb:frame> object. */ | |
197 | ||
198 | int | |
199 | frscm_is_frame (SCM scm) | |
200 | { | |
201 | return SCM_SMOB_PREDICATE (frame_smob_tag, scm); | |
202 | } | |
203 | ||
204 | /* (frame? object) -> boolean */ | |
205 | ||
206 | static SCM | |
207 | gdbscm_frame_p (SCM scm) | |
208 | { | |
209 | return scm_from_bool (frscm_is_frame (scm)); | |
210 | } | |
211 | ||
212 | /* Create a new <gdb:frame> object that encapsulates FRAME. | |
213 | Returns a <gdb:exception> object if there is an error. */ | |
214 | ||
215 | static SCM | |
216 | frscm_scm_from_frame (struct frame_info *frame, struct inferior *inferior) | |
217 | { | |
218 | frame_smob *f_smob, f_smob_for_lookup; | |
219 | SCM f_scm; | |
220 | htab_t htab; | |
221 | eqable_gdb_smob **slot; | |
ed3ef339 DE |
222 | struct frame_id frame_id = null_frame_id; |
223 | struct gdbarch *gdbarch = NULL; | |
224 | int frame_id_is_next = 0; | |
225 | ||
226 | /* If we've already created a gsmob for this frame, return it. | |
227 | This makes frames eq?-able. */ | |
228 | htab = frscm_inferior_frame_map (inferior); | |
229 | f_smob_for_lookup.frame_id = get_frame_id (frame); | |
230 | f_smob_for_lookup.inferior = inferior; | |
231 | slot = gdbscm_find_eqable_gsmob_ptr_slot (htab, &f_smob_for_lookup.base); | |
232 | if (*slot != NULL) | |
233 | return (*slot)->containing_scm; | |
234 | ||
492d29ea | 235 | TRY |
ed3ef339 DE |
236 | { |
237 | /* Try to get the previous frame, to determine if this is the last frame | |
238 | in a corrupt stack. If so, we need to store the frame_id of the next | |
239 | frame and not of this one (which is possibly invalid). */ | |
240 | if (get_prev_frame (frame) == NULL | |
241 | && get_frame_unwind_stop_reason (frame) != UNWIND_NO_REASON | |
242 | && get_next_frame (frame) != NULL) | |
243 | { | |
244 | frame_id = get_frame_id (get_next_frame (frame)); | |
245 | frame_id_is_next = 1; | |
246 | } | |
247 | else | |
248 | { | |
249 | frame_id = get_frame_id (frame); | |
250 | frame_id_is_next = 0; | |
251 | } | |
252 | gdbarch = get_frame_arch (frame); | |
253 | } | |
492d29ea PA |
254 | CATCH (except, RETURN_MASK_ALL) |
255 | { | |
256 | return gdbscm_scm_from_gdb_exception (except); | |
257 | } | |
258 | END_CATCH | |
ed3ef339 DE |
259 | |
260 | f_scm = frscm_make_frame_smob (); | |
261 | f_smob = (frame_smob *) SCM_SMOB_DATA (f_scm); | |
262 | f_smob->frame_id = frame_id; | |
263 | f_smob->gdbarch = gdbarch; | |
264 | f_smob->inferior = inferior; | |
265 | f_smob->frame_id_is_next = frame_id_is_next; | |
266 | ||
1254eefc | 267 | gdbscm_fill_eqable_gsmob_ptr_slot (slot, &f_smob->base); |
ed3ef339 DE |
268 | |
269 | return f_scm; | |
270 | } | |
271 | ||
272 | /* Create a new <gdb:frame> object that encapsulates FRAME. | |
273 | A Scheme exception is thrown if there is an error. */ | |
274 | ||
275 | static SCM | |
276 | frscm_scm_from_frame_unsafe (struct frame_info *frame, | |
277 | struct inferior *inferior) | |
278 | { | |
279 | SCM f_scm = frscm_scm_from_frame (frame, inferior); | |
280 | ||
281 | if (gdbscm_is_exception (f_scm)) | |
282 | gdbscm_throw (f_scm); | |
283 | ||
284 | return f_scm; | |
285 | } | |
286 | ||
287 | /* Returns the <gdb:frame> object in SELF. | |
288 | Throws an exception if SELF is not a <gdb:frame> object. */ | |
289 | ||
290 | static SCM | |
291 | frscm_get_frame_arg_unsafe (SCM self, int arg_pos, const char *func_name) | |
292 | { | |
293 | SCM_ASSERT_TYPE (frscm_is_frame (self), self, arg_pos, func_name, | |
294 | frame_smob_name); | |
295 | ||
296 | return self; | |
297 | } | |
298 | ||
299 | /* There is no gdbscm_scm_to_frame function because translating | |
300 | a frame SCM object to a struct frame_info * can throw a GDB error. | |
301 | Thus code working with frames has to handle both Scheme errors (e.g., the | |
302 | object is not a frame) and GDB errors (e.g., the frame lookup failed). | |
303 | ||
e9fbd043 DE |
304 | To help keep things clear we split what would be gdbscm_scm_to_frame |
305 | into two: | |
ed3ef339 | 306 | |
e9fbd043 | 307 | frscm_get_frame_smob_arg_unsafe |
ed3ef339 DE |
308 | - throws a Scheme error if object is not a frame, |
309 | or if the inferior is gone or is no longer current | |
310 | ||
e9fbd043 | 311 | frscm_frame_smob_to_frame |
ed3ef339 DE |
312 | - may throw a gdb error if the conversion fails |
313 | - it's not clear when it will and won't throw a GDB error, | |
314 | but for robustness' sake we assume that whenever we call out to GDB | |
315 | a GDB error may get thrown (and thus the call must be wrapped in a | |
316 | TRY_CATCH) */ | |
317 | ||
318 | /* Returns the frame_smob for the object wrapped by FRAME_SCM. | |
319 | A Scheme error is thrown if FRAME_SCM is not a frame. */ | |
320 | ||
321 | frame_smob * | |
322 | frscm_get_frame_smob_arg_unsafe (SCM self, int arg_pos, const char *func_name) | |
323 | { | |
324 | SCM f_scm = frscm_get_frame_arg_unsafe (self, arg_pos, func_name); | |
325 | frame_smob *f_smob = (frame_smob *) SCM_SMOB_DATA (f_scm); | |
326 | ||
327 | if (f_smob->inferior == NULL) | |
328 | { | |
329 | gdbscm_invalid_object_error (func_name, arg_pos, self, | |
330 | _("inferior")); | |
331 | } | |
332 | if (f_smob->inferior != current_inferior ()) | |
333 | scm_misc_error (func_name, _("inferior has changed"), SCM_EOL); | |
334 | ||
335 | return f_smob; | |
336 | } | |
337 | ||
338 | /* Returns the frame_info object wrapped by F_SMOB. | |
339 | If the frame doesn't exist anymore (the frame id doesn't | |
340 | correspond to any frame in the inferior), returns NULL. | |
341 | This function calls GDB routines, so don't assume a GDB error will | |
342 | not be thrown. */ | |
343 | ||
344 | struct frame_info * | |
345 | frscm_frame_smob_to_frame (frame_smob *f_smob) | |
346 | { | |
347 | struct frame_info *frame; | |
348 | ||
349 | frame = frame_find_by_id (f_smob->frame_id); | |
350 | if (frame == NULL) | |
351 | return NULL; | |
352 | ||
353 | if (f_smob->frame_id_is_next) | |
354 | frame = get_prev_frame (frame); | |
355 | ||
356 | return frame; | |
357 | } | |
358 | ||
359 | /* Helper function for frscm_del_inferior_frames to mark the frame | |
360 | as invalid. */ | |
361 | ||
362 | static int | |
363 | frscm_mark_frame_invalid (void **slot, void *info) | |
364 | { | |
365 | frame_smob *f_smob = (frame_smob *) *slot; | |
366 | ||
367 | f_smob->inferior = NULL; | |
368 | return 1; | |
369 | } | |
370 | ||
371 | /* This function is called when an inferior is about to be freed. | |
372 | Invalidate the frame as further actions on the frame could result | |
373 | in bad data. All access to the frame should be gated by | |
374 | frscm_get_frame_smob_arg_unsafe which will raise an exception on | |
375 | invalid frames. */ | |
376 | ||
377 | static void | |
378 | frscm_del_inferior_frames (struct inferior *inferior, void *datum) | |
379 | { | |
9a3c8263 | 380 | htab_t htab = (htab_t) datum; |
ed3ef339 DE |
381 | |
382 | if (htab != NULL) | |
383 | { | |
384 | htab_traverse_noresize (htab, frscm_mark_frame_invalid, NULL); | |
385 | htab_delete (htab); | |
386 | } | |
387 | } | |
388 | \f | |
389 | /* Frame methods. */ | |
390 | ||
391 | /* (frame-valid? <gdb:frame>) -> bool | |
392 | Returns #t if the frame corresponding to the frame_id of this | |
393 | object still exists in the inferior. */ | |
394 | ||
395 | static SCM | |
396 | gdbscm_frame_valid_p (SCM self) | |
397 | { | |
398 | frame_smob *f_smob; | |
399 | struct frame_info *frame = NULL; | |
ed3ef339 DE |
400 | |
401 | f_smob = frscm_get_frame_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
402 | ||
492d29ea | 403 | TRY |
ed3ef339 DE |
404 | { |
405 | frame = frscm_frame_smob_to_frame (f_smob); | |
406 | } | |
492d29ea PA |
407 | CATCH (except, RETURN_MASK_ALL) |
408 | { | |
409 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
410 | } | |
411 | END_CATCH | |
ed3ef339 DE |
412 | |
413 | return scm_from_bool (frame != NULL); | |
414 | } | |
415 | ||
416 | /* (frame-name <gdb:frame>) -> string | |
417 | Returns the name of the function corresponding to this frame, | |
418 | or #f if there is no function. */ | |
419 | ||
420 | static SCM | |
421 | gdbscm_frame_name (SCM self) | |
422 | { | |
423 | frame_smob *f_smob; | |
424 | char *name = NULL; | |
425 | enum language lang = language_minimal; | |
426 | struct frame_info *frame = NULL; | |
427 | SCM result; | |
ed3ef339 DE |
428 | |
429 | f_smob = frscm_get_frame_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
430 | ||
492d29ea | 431 | TRY |
ed3ef339 DE |
432 | { |
433 | frame = frscm_frame_smob_to_frame (f_smob); | |
434 | if (frame != NULL) | |
435 | find_frame_funname (frame, &name, &lang, NULL); | |
436 | } | |
6c63c96a | 437 | CATCH (except, RETURN_MASK_ALL) |
492d29ea | 438 | { |
6c63c96a PA |
439 | xfree (name); |
440 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
492d29ea PA |
441 | } |
442 | END_CATCH | |
443 | ||
ed3ef339 DE |
444 | if (frame == NULL) |
445 | { | |
446 | gdbscm_invalid_object_error (FUNC_NAME, SCM_ARG1, self, | |
447 | _("<gdb:frame>")); | |
448 | } | |
449 | ||
450 | if (name != NULL) | |
451 | { | |
452 | result = gdbscm_scm_from_c_string (name); | |
453 | xfree (name); | |
454 | } | |
455 | else | |
456 | result = SCM_BOOL_F; | |
457 | ||
458 | return result; | |
459 | } | |
460 | ||
461 | /* (frame-type <gdb:frame>) -> integer | |
462 | Returns the frame type, namely one of the gdb:*_FRAME constants. */ | |
463 | ||
464 | static SCM | |
465 | gdbscm_frame_type (SCM self) | |
466 | { | |
467 | frame_smob *f_smob; | |
468 | enum frame_type type = NORMAL_FRAME; | |
469 | struct frame_info *frame = NULL; | |
ed3ef339 DE |
470 | |
471 | f_smob = frscm_get_frame_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
472 | ||
492d29ea | 473 | TRY |
ed3ef339 DE |
474 | { |
475 | frame = frscm_frame_smob_to_frame (f_smob); | |
476 | if (frame != NULL) | |
477 | type = get_frame_type (frame); | |
478 | } | |
492d29ea PA |
479 | CATCH (except, RETURN_MASK_ALL) |
480 | { | |
481 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
482 | } | |
483 | END_CATCH | |
ed3ef339 DE |
484 | |
485 | if (frame == NULL) | |
486 | { | |
487 | gdbscm_invalid_object_error (FUNC_NAME, SCM_ARG1, self, | |
488 | _("<gdb:frame>")); | |
489 | } | |
490 | ||
491 | return scm_from_int (type); | |
492 | } | |
493 | ||
494 | /* (frame-arch <gdb:frame>) -> <gdb:architecture> | |
495 | Returns the frame's architecture as a gdb:architecture object. */ | |
496 | ||
497 | static SCM | |
498 | gdbscm_frame_arch (SCM self) | |
499 | { | |
500 | frame_smob *f_smob; | |
501 | struct frame_info *frame = NULL; | |
ed3ef339 DE |
502 | |
503 | f_smob = frscm_get_frame_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
504 | ||
492d29ea | 505 | TRY |
ed3ef339 DE |
506 | { |
507 | frame = frscm_frame_smob_to_frame (f_smob); | |
508 | } | |
492d29ea PA |
509 | CATCH (except, RETURN_MASK_ALL) |
510 | { | |
511 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
512 | } | |
513 | END_CATCH | |
ed3ef339 DE |
514 | |
515 | if (frame == NULL) | |
516 | { | |
517 | gdbscm_invalid_object_error (FUNC_NAME, SCM_ARG1, self, | |
518 | _("<gdb:frame>")); | |
519 | } | |
520 | ||
521 | return arscm_scm_from_arch (f_smob->gdbarch); | |
522 | } | |
523 | ||
524 | /* (frame-unwind-stop-reason <gdb:frame>) -> integer | |
525 | Returns one of the gdb:FRAME_UNWIND_* constants. */ | |
526 | ||
527 | static SCM | |
528 | gdbscm_frame_unwind_stop_reason (SCM self) | |
529 | { | |
530 | frame_smob *f_smob; | |
531 | struct frame_info *frame = NULL; | |
ed3ef339 DE |
532 | enum unwind_stop_reason stop_reason; |
533 | ||
534 | f_smob = frscm_get_frame_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
535 | ||
492d29ea | 536 | TRY |
ed3ef339 DE |
537 | { |
538 | frame = frscm_frame_smob_to_frame (f_smob); | |
539 | } | |
492d29ea PA |
540 | CATCH (except, RETURN_MASK_ALL) |
541 | { | |
542 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
543 | } | |
544 | END_CATCH | |
ed3ef339 DE |
545 | |
546 | if (frame == NULL) | |
547 | { | |
548 | gdbscm_invalid_object_error (FUNC_NAME, SCM_ARG1, self, | |
549 | _("<gdb:frame>")); | |
550 | } | |
551 | ||
552 | stop_reason = get_frame_unwind_stop_reason (frame); | |
553 | ||
554 | return scm_from_int (stop_reason); | |
555 | } | |
556 | ||
557 | /* (frame-pc <gdb:frame>) -> integer | |
558 | Returns the frame's resume address. */ | |
559 | ||
560 | static SCM | |
561 | gdbscm_frame_pc (SCM self) | |
562 | { | |
563 | frame_smob *f_smob; | |
564 | CORE_ADDR pc = 0; | |
565 | struct frame_info *frame = NULL; | |
ed3ef339 DE |
566 | |
567 | f_smob = frscm_get_frame_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
568 | ||
492d29ea | 569 | TRY |
ed3ef339 DE |
570 | { |
571 | frame = frscm_frame_smob_to_frame (f_smob); | |
572 | if (frame != NULL) | |
573 | pc = get_frame_pc (frame); | |
574 | } | |
492d29ea PA |
575 | CATCH (except, RETURN_MASK_ALL) |
576 | { | |
577 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
578 | } | |
579 | END_CATCH | |
ed3ef339 DE |
580 | |
581 | if (frame == NULL) | |
582 | { | |
583 | gdbscm_invalid_object_error (FUNC_NAME, SCM_ARG1, self, | |
584 | _("<gdb:frame>")); | |
585 | } | |
586 | ||
587 | return gdbscm_scm_from_ulongest (pc); | |
588 | } | |
589 | ||
590 | /* (frame-block <gdb:frame>) -> <gdb:block> | |
591 | Returns the frame's code block, or #f if one cannot be found. */ | |
592 | ||
593 | static SCM | |
594 | gdbscm_frame_block (SCM self) | |
595 | { | |
596 | frame_smob *f_smob; | |
3977b71f | 597 | const struct block *block = NULL, *fn_block; |
ed3ef339 | 598 | struct frame_info *frame = NULL; |
ed3ef339 DE |
599 | |
600 | f_smob = frscm_get_frame_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
601 | ||
492d29ea | 602 | TRY |
ed3ef339 DE |
603 | { |
604 | frame = frscm_frame_smob_to_frame (f_smob); | |
605 | if (frame != NULL) | |
606 | block = get_frame_block (frame, NULL); | |
607 | } | |
492d29ea PA |
608 | CATCH (except, RETURN_MASK_ALL) |
609 | { | |
610 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
611 | } | |
612 | END_CATCH | |
ed3ef339 DE |
613 | |
614 | if (frame == NULL) | |
615 | { | |
616 | gdbscm_invalid_object_error (FUNC_NAME, SCM_ARG1, self, | |
617 | _("<gdb:frame>")); | |
618 | } | |
619 | ||
620 | for (fn_block = block; | |
621 | fn_block != NULL && BLOCK_FUNCTION (fn_block) == NULL; | |
622 | fn_block = BLOCK_SUPERBLOCK (fn_block)) | |
623 | continue; | |
624 | ||
625 | if (block == NULL || fn_block == NULL || BLOCK_FUNCTION (fn_block) == NULL) | |
626 | { | |
627 | scm_misc_error (FUNC_NAME, _("cannot find block for frame"), | |
628 | scm_list_1 (self)); | |
629 | } | |
630 | ||
631 | if (block != NULL) | |
632 | { | |
08be3fe3 DE |
633 | return bkscm_scm_from_block |
634 | (block, symbol_objfile (BLOCK_FUNCTION (fn_block))); | |
ed3ef339 DE |
635 | } |
636 | ||
637 | return SCM_BOOL_F; | |
638 | } | |
639 | ||
640 | /* (frame-function <gdb:frame>) -> <gdb:symbol> | |
641 | Returns the symbol for the function corresponding to this frame, | |
642 | or #f if there isn't one. */ | |
643 | ||
644 | static SCM | |
645 | gdbscm_frame_function (SCM self) | |
646 | { | |
647 | frame_smob *f_smob; | |
648 | struct symbol *sym = NULL; | |
649 | struct frame_info *frame = NULL; | |
ed3ef339 DE |
650 | |
651 | f_smob = frscm_get_frame_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
652 | ||
492d29ea | 653 | TRY |
ed3ef339 DE |
654 | { |
655 | frame = frscm_frame_smob_to_frame (f_smob); | |
656 | if (frame != NULL) | |
657 | sym = find_pc_function (get_frame_address_in_block (frame)); | |
658 | } | |
492d29ea PA |
659 | CATCH (except, RETURN_MASK_ALL) |
660 | { | |
661 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
662 | } | |
663 | END_CATCH | |
ed3ef339 DE |
664 | |
665 | if (frame == NULL) | |
666 | { | |
667 | gdbscm_invalid_object_error (FUNC_NAME, SCM_ARG1, self, | |
668 | _("<gdb:frame>")); | |
669 | } | |
670 | ||
671 | if (sym != NULL) | |
672 | return syscm_scm_from_symbol (sym); | |
673 | ||
674 | return SCM_BOOL_F; | |
675 | } | |
676 | ||
677 | /* (frame-older <gdb:frame>) -> <gdb:frame> | |
678 | Returns the frame immediately older (outer) to this frame, | |
679 | or #f if there isn't one. */ | |
680 | ||
681 | static SCM | |
682 | gdbscm_frame_older (SCM self) | |
683 | { | |
684 | frame_smob *f_smob; | |
685 | struct frame_info *prev = NULL; | |
686 | struct frame_info *frame = NULL; | |
ed3ef339 DE |
687 | |
688 | f_smob = frscm_get_frame_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
689 | ||
492d29ea | 690 | TRY |
ed3ef339 DE |
691 | { |
692 | frame = frscm_frame_smob_to_frame (f_smob); | |
693 | if (frame != NULL) | |
694 | prev = get_prev_frame (frame); | |
695 | } | |
492d29ea PA |
696 | CATCH (except, RETURN_MASK_ALL) |
697 | { | |
698 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
699 | } | |
700 | END_CATCH | |
ed3ef339 DE |
701 | |
702 | if (frame == NULL) | |
703 | { | |
704 | gdbscm_invalid_object_error (FUNC_NAME, SCM_ARG1, self, | |
705 | _("<gdb:frame>")); | |
706 | } | |
707 | ||
708 | if (prev != NULL) | |
709 | return frscm_scm_from_frame_unsafe (prev, f_smob->inferior); | |
710 | ||
711 | return SCM_BOOL_F; | |
712 | } | |
713 | ||
714 | /* (frame-newer <gdb:frame>) -> <gdb:frame> | |
715 | Returns the frame immediately newer (inner) to this frame, | |
716 | or #f if there isn't one. */ | |
717 | ||
718 | static SCM | |
719 | gdbscm_frame_newer (SCM self) | |
720 | { | |
721 | frame_smob *f_smob; | |
722 | struct frame_info *next = NULL; | |
723 | struct frame_info *frame = NULL; | |
ed3ef339 DE |
724 | |
725 | f_smob = frscm_get_frame_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
726 | ||
492d29ea | 727 | TRY |
ed3ef339 DE |
728 | { |
729 | frame = frscm_frame_smob_to_frame (f_smob); | |
730 | if (frame != NULL) | |
731 | next = get_next_frame (frame); | |
732 | } | |
492d29ea PA |
733 | CATCH (except, RETURN_MASK_ALL) |
734 | { | |
735 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
736 | } | |
737 | END_CATCH | |
ed3ef339 DE |
738 | |
739 | if (frame == NULL) | |
740 | { | |
741 | gdbscm_invalid_object_error (FUNC_NAME, SCM_ARG1, self, | |
742 | _("<gdb:frame>")); | |
743 | } | |
744 | ||
745 | if (next != NULL) | |
746 | return frscm_scm_from_frame_unsafe (next, f_smob->inferior); | |
747 | ||
748 | return SCM_BOOL_F; | |
749 | } | |
750 | ||
751 | /* (frame-sal <gdb:frame>) -> <gdb:sal> | |
752 | Returns the frame's symtab and line. */ | |
753 | ||
754 | static SCM | |
755 | gdbscm_frame_sal (SCM self) | |
756 | { | |
757 | frame_smob *f_smob; | |
758 | struct symtab_and_line sal; | |
759 | struct frame_info *frame = NULL; | |
ed3ef339 DE |
760 | |
761 | f_smob = frscm_get_frame_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
762 | ||
492d29ea | 763 | TRY |
ed3ef339 DE |
764 | { |
765 | frame = frscm_frame_smob_to_frame (f_smob); | |
766 | if (frame != NULL) | |
767 | find_frame_sal (frame, &sal); | |
768 | } | |
492d29ea PA |
769 | CATCH (except, RETURN_MASK_ALL) |
770 | { | |
771 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
772 | } | |
773 | END_CATCH | |
ed3ef339 DE |
774 | |
775 | if (frame == NULL) | |
776 | { | |
777 | gdbscm_invalid_object_error (FUNC_NAME, SCM_ARG1, self, | |
778 | _("<gdb:frame>")); | |
779 | } | |
780 | ||
781 | return stscm_scm_from_sal (sal); | |
782 | } | |
783 | ||
f2983cc3 AW |
784 | /* (frame-read-register <gdb:frame> string) -> <gdb:value> |
785 | The register argument must be a string. */ | |
786 | ||
787 | static SCM | |
788 | gdbscm_frame_read_register (SCM self, SCM register_scm) | |
789 | { | |
790 | char *register_str; | |
791 | struct value *value = NULL; | |
792 | struct frame_info *frame = NULL; | |
793 | struct cleanup *cleanup; | |
794 | frame_smob *f_smob; | |
795 | ||
796 | f_smob = frscm_get_frame_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
797 | gdbscm_parse_function_args (FUNC_NAME, SCM_ARG2, NULL, "s", | |
798 | register_scm, ®ister_str); | |
799 | cleanup = make_cleanup (xfree, register_str); | |
800 | ||
801 | TRY | |
802 | { | |
803 | int regnum; | |
804 | ||
805 | frame = frscm_frame_smob_to_frame (f_smob); | |
806 | if (frame) | |
807 | { | |
808 | regnum = user_reg_map_name_to_regnum (get_frame_arch (frame), | |
809 | register_str, | |
810 | strlen (register_str)); | |
811 | if (regnum >= 0) | |
812 | value = value_of_register (regnum, frame); | |
813 | } | |
814 | } | |
815 | CATCH (except, RETURN_MASK_ALL) | |
816 | { | |
817 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
818 | } | |
819 | END_CATCH | |
820 | ||
821 | do_cleanups (cleanup); | |
822 | ||
823 | if (frame == NULL) | |
824 | { | |
825 | gdbscm_invalid_object_error (FUNC_NAME, SCM_ARG1, self, | |
826 | _("<gdb:frame>")); | |
827 | } | |
828 | ||
829 | if (value == NULL) | |
830 | { | |
831 | gdbscm_out_of_range_error (FUNC_NAME, SCM_ARG2, register_scm, | |
832 | _("unknown register")); | |
833 | } | |
834 | ||
835 | return vlscm_scm_from_value (value); | |
836 | } | |
837 | ||
ed3ef339 DE |
838 | /* (frame-read-var <gdb:frame> <gdb:symbol>) -> <gdb:value> |
839 | (frame-read-var <gdb:frame> string [#:block <gdb:block>]) -> <gdb:value> | |
840 | If the optional block argument is provided start the search from that block, | |
841 | otherwise search from the frame's current block (determined by examining | |
842 | the resume address of the frame). The variable argument must be a string | |
843 | or an instance of a <gdb:symbol>. The block argument must be an instance of | |
844 | <gdb:block>. */ | |
845 | ||
846 | static SCM | |
847 | gdbscm_frame_read_var (SCM self, SCM symbol_scm, SCM rest) | |
848 | { | |
849 | SCM keywords[] = { block_keyword, SCM_BOOL_F }; | |
850 | int rc; | |
851 | frame_smob *f_smob; | |
852 | int block_arg_pos = -1; | |
853 | SCM block_scm = SCM_UNDEFINED; | |
854 | struct frame_info *frame = NULL; | |
855 | struct symbol *var = NULL; | |
63e43d3a | 856 | const struct block *block = NULL; |
ed3ef339 | 857 | struct value *value = NULL; |
ed3ef339 DE |
858 | |
859 | f_smob = frscm_get_frame_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
860 | ||
492d29ea | 861 | TRY |
ed3ef339 DE |
862 | { |
863 | frame = frscm_frame_smob_to_frame (f_smob); | |
864 | } | |
492d29ea PA |
865 | CATCH (except, RETURN_MASK_ALL) |
866 | { | |
867 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
868 | } | |
869 | END_CATCH | |
ed3ef339 DE |
870 | |
871 | if (frame == NULL) | |
872 | { | |
873 | gdbscm_invalid_object_error (FUNC_NAME, SCM_ARG1, self, | |
874 | _("<gdb:frame>")); | |
875 | } | |
876 | ||
877 | gdbscm_parse_function_args (FUNC_NAME, SCM_ARG3, keywords, "#O", | |
878 | rest, &block_arg_pos, &block_scm); | |
879 | ||
880 | if (syscm_is_symbol (symbol_scm)) | |
881 | { | |
882 | var = syscm_get_valid_symbol_arg_unsafe (symbol_scm, SCM_ARG2, | |
883 | FUNC_NAME); | |
884 | SCM_ASSERT (SCM_UNBNDP (block_scm), block_scm, SCM_ARG3, FUNC_NAME); | |
885 | } | |
886 | else if (scm_is_string (symbol_scm)) | |
887 | { | |
888 | char *var_name; | |
889 | const struct block *block = NULL; | |
890 | struct cleanup *cleanup; | |
492d29ea | 891 | struct gdb_exception except = exception_none; |
ed3ef339 DE |
892 | |
893 | if (! SCM_UNBNDP (block_scm)) | |
894 | { | |
895 | SCM except_scm; | |
896 | ||
897 | gdb_assert (block_arg_pos > 0); | |
898 | block = bkscm_scm_to_block (block_scm, block_arg_pos, FUNC_NAME, | |
899 | &except_scm); | |
900 | if (block == NULL) | |
901 | gdbscm_throw (except_scm); | |
902 | } | |
903 | ||
904 | var_name = gdbscm_scm_to_c_string (symbol_scm); | |
905 | cleanup = make_cleanup (xfree, var_name); | |
906 | /* N.B. Between here and the call to do_cleanups, don't do anything | |
907 | to cause a Scheme exception without performing the cleanup. */ | |
908 | ||
492d29ea | 909 | TRY |
ed3ef339 | 910 | { |
63e43d3a PMR |
911 | struct block_symbol lookup_sym; |
912 | ||
ed3ef339 DE |
913 | if (block == NULL) |
914 | block = get_frame_block (frame, NULL); | |
63e43d3a PMR |
915 | lookup_sym = lookup_symbol (var_name, block, VAR_DOMAIN, NULL); |
916 | var = lookup_sym.symbol; | |
917 | block = lookup_sym.block; | |
ed3ef339 | 918 | } |
492d29ea PA |
919 | CATCH (ex, RETURN_MASK_ALL) |
920 | { | |
921 | except = ex; | |
922 | } | |
923 | END_CATCH | |
924 | ||
925 | do_cleanups (cleanup); | |
ed3ef339 DE |
926 | GDBSCM_HANDLE_GDB_EXCEPTION (except); |
927 | ||
928 | if (var == NULL) | |
929 | { | |
930 | do_cleanups (cleanup); | |
931 | gdbscm_out_of_range_error (FUNC_NAME, 0, symbol_scm, | |
932 | _("variable not found")); | |
933 | } | |
934 | ||
935 | do_cleanups (cleanup); | |
936 | } | |
937 | else | |
938 | { | |
939 | /* Use SCM_ASSERT_TYPE for more consistent error messages. */ | |
940 | SCM_ASSERT_TYPE (0, symbol_scm, SCM_ARG1, FUNC_NAME, | |
941 | _("gdb:symbol or string")); | |
942 | } | |
943 | ||
492d29ea | 944 | TRY |
ed3ef339 | 945 | { |
63e43d3a | 946 | value = read_var_value (var, block, frame); |
ed3ef339 | 947 | } |
492d29ea PA |
948 | CATCH (except, RETURN_MASK_ALL) |
949 | { | |
950 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
951 | } | |
952 | END_CATCH | |
ed3ef339 DE |
953 | |
954 | return vlscm_scm_from_value (value); | |
955 | } | |
956 | ||
957 | /* (frame-select <gdb:frame>) -> unspecified | |
958 | Select this frame. */ | |
959 | ||
960 | static SCM | |
961 | gdbscm_frame_select (SCM self) | |
962 | { | |
963 | frame_smob *f_smob; | |
964 | struct frame_info *frame = NULL; | |
ed3ef339 DE |
965 | |
966 | f_smob = frscm_get_frame_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
967 | ||
492d29ea | 968 | TRY |
ed3ef339 DE |
969 | { |
970 | frame = frscm_frame_smob_to_frame (f_smob); | |
971 | if (frame != NULL) | |
972 | select_frame (frame); | |
973 | } | |
492d29ea PA |
974 | CATCH (except, RETURN_MASK_ALL) |
975 | { | |
976 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
977 | } | |
978 | END_CATCH | |
ed3ef339 DE |
979 | |
980 | if (frame == NULL) | |
981 | { | |
982 | gdbscm_invalid_object_error (FUNC_NAME, SCM_ARG1, self, | |
983 | _("<gdb:frame>")); | |
984 | } | |
985 | ||
986 | return SCM_UNSPECIFIED; | |
987 | } | |
988 | ||
989 | /* (newest-frame) -> <gdb:frame> | |
990 | Returns the newest frame. */ | |
991 | ||
992 | static SCM | |
993 | gdbscm_newest_frame (void) | |
994 | { | |
995 | struct frame_info *frame = NULL; | |
ed3ef339 | 996 | |
492d29ea | 997 | TRY |
ed3ef339 DE |
998 | { |
999 | frame = get_current_frame (); | |
1000 | } | |
492d29ea PA |
1001 | CATCH (except, RETURN_MASK_ALL) |
1002 | { | |
1003 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
1004 | } | |
1005 | END_CATCH | |
ed3ef339 DE |
1006 | |
1007 | return frscm_scm_from_frame_unsafe (frame, current_inferior ()); | |
1008 | } | |
1009 | ||
1010 | /* (selected-frame) -> <gdb:frame> | |
1011 | Returns the selected frame. */ | |
1012 | ||
1013 | static SCM | |
1014 | gdbscm_selected_frame (void) | |
1015 | { | |
1016 | struct frame_info *frame = NULL; | |
ed3ef339 | 1017 | |
492d29ea | 1018 | TRY |
ed3ef339 DE |
1019 | { |
1020 | frame = get_selected_frame (_("No frame is currently selected")); | |
1021 | } | |
492d29ea PA |
1022 | CATCH (except, RETURN_MASK_ALL) |
1023 | { | |
1024 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
1025 | } | |
1026 | END_CATCH | |
ed3ef339 DE |
1027 | |
1028 | return frscm_scm_from_frame_unsafe (frame, current_inferior ()); | |
1029 | } | |
1030 | ||
1031 | /* (unwind-stop-reason-string integer) -> string | |
1032 | Return a string explaining the unwind stop reason. */ | |
1033 | ||
1034 | static SCM | |
1035 | gdbscm_unwind_stop_reason_string (SCM reason_scm) | |
1036 | { | |
1037 | int reason; | |
1038 | const char *str; | |
1039 | ||
1040 | gdbscm_parse_function_args (FUNC_NAME, SCM_ARG1, NULL, "i", | |
1041 | reason_scm, &reason); | |
1042 | ||
1043 | if (reason < UNWIND_FIRST || reason > UNWIND_LAST) | |
1044 | scm_out_of_range (FUNC_NAME, reason_scm); | |
1045 | ||
fa4c39cb | 1046 | str = unwind_stop_reason_to_string ((enum unwind_stop_reason) reason); |
ed3ef339 DE |
1047 | return gdbscm_scm_from_c_string (str); |
1048 | } | |
1049 | \f | |
1050 | /* Initialize the Scheme frame support. */ | |
1051 | ||
1052 | static const scheme_integer_constant frame_integer_constants[] = | |
1053 | { | |
1054 | #define ENTRY(X) { #X, X } | |
1055 | ||
1056 | ENTRY (NORMAL_FRAME), | |
1057 | ENTRY (DUMMY_FRAME), | |
1058 | ENTRY (INLINE_FRAME), | |
1059 | ENTRY (TAILCALL_FRAME), | |
1060 | ENTRY (SIGTRAMP_FRAME), | |
1061 | ENTRY (ARCH_FRAME), | |
1062 | ENTRY (SENTINEL_FRAME), | |
1063 | ||
1064 | #undef ENTRY | |
1065 | ||
1066 | #define SET(name, description) \ | |
1067 | { "FRAME_" #name, name }, | |
1068 | #include "unwind_stop_reasons.def" | |
1069 | #undef SET | |
1070 | ||
1071 | END_INTEGER_CONSTANTS | |
1072 | }; | |
1073 | ||
1074 | static const scheme_function frame_functions[] = | |
1075 | { | |
72e02483 | 1076 | { "frame?", 1, 0, 0, as_a_scm_t_subr (gdbscm_frame_p), |
ed3ef339 DE |
1077 | "\ |
1078 | Return #t if the object is a <gdb:frame> object." }, | |
1079 | ||
72e02483 | 1080 | { "frame-valid?", 1, 0, 0, as_a_scm_t_subr (gdbscm_frame_valid_p), |
ed3ef339 DE |
1081 | "\ |
1082 | Return #t if the object is a valid <gdb:frame> object.\n\ | |
1083 | Frames become invalid when the inferior returns to its caller." }, | |
1084 | ||
72e02483 | 1085 | { "frame-name", 1, 0, 0, as_a_scm_t_subr (gdbscm_frame_name), |
ed3ef339 DE |
1086 | "\ |
1087 | Return the name of the function corresponding to this frame,\n\ | |
1088 | or #f if there is no function." }, | |
1089 | ||
72e02483 | 1090 | { "frame-arch", 1, 0, 0, as_a_scm_t_subr (gdbscm_frame_arch), |
ed3ef339 DE |
1091 | "\ |
1092 | Return the frame's architecture as a <gdb:arch> object." }, | |
1093 | ||
72e02483 | 1094 | { "frame-type", 1, 0, 0, as_a_scm_t_subr (gdbscm_frame_type), |
ed3ef339 DE |
1095 | "\ |
1096 | Return the frame type, namely one of the gdb:*_FRAME constants." }, | |
1097 | ||
72e02483 PA |
1098 | { "frame-unwind-stop-reason", 1, 0, 0, |
1099 | as_a_scm_t_subr (gdbscm_frame_unwind_stop_reason), | |
ed3ef339 DE |
1100 | "\ |
1101 | Return one of the gdb:FRAME_UNWIND_* constants explaining why\n\ | |
1102 | it's not possible to find frames older than this." }, | |
1103 | ||
72e02483 | 1104 | { "frame-pc", 1, 0, 0, as_a_scm_t_subr (gdbscm_frame_pc), |
ed3ef339 DE |
1105 | "\ |
1106 | Return the frame's resume address." }, | |
1107 | ||
72e02483 | 1108 | { "frame-block", 1, 0, 0, as_a_scm_t_subr (gdbscm_frame_block), |
ed3ef339 DE |
1109 | "\ |
1110 | Return the frame's code block, or #f if one cannot be found." }, | |
1111 | ||
72e02483 | 1112 | { "frame-function", 1, 0, 0, as_a_scm_t_subr (gdbscm_frame_function), |
ed3ef339 DE |
1113 | "\ |
1114 | Return the <gdb:symbol> for the function corresponding to this frame,\n\ | |
1115 | or #f if there isn't one." }, | |
1116 | ||
72e02483 | 1117 | { "frame-older", 1, 0, 0, as_a_scm_t_subr (gdbscm_frame_older), |
ed3ef339 DE |
1118 | "\ |
1119 | Return the frame immediately older (outer) to this frame,\n\ | |
1120 | or #f if there isn't one." }, | |
1121 | ||
72e02483 | 1122 | { "frame-newer", 1, 0, 0, as_a_scm_t_subr (gdbscm_frame_newer), |
ed3ef339 DE |
1123 | "\ |
1124 | Return the frame immediately newer (inner) to this frame,\n\ | |
1125 | or #f if there isn't one." }, | |
1126 | ||
72e02483 | 1127 | { "frame-sal", 1, 0, 0, as_a_scm_t_subr (gdbscm_frame_sal), |
ed3ef339 DE |
1128 | "\ |
1129 | Return the frame's symtab-and-line <gdb:sal> object." }, | |
1130 | ||
72e02483 | 1131 | { "frame-read-var", 2, 0, 1, as_a_scm_t_subr (gdbscm_frame_read_var), |
ed3ef339 DE |
1132 | "\ |
1133 | Return the value of the symbol in the frame.\n\ | |
1134 | \n\ | |
1135 | Arguments: <gdb:frame> <gdb:symbol>\n\ | |
1136 | Or: <gdb:frame> string [#:block <gdb:block>]" }, | |
1137 | ||
72e02483 PA |
1138 | { "frame-read-register", 2, 0, 0, |
1139 | as_a_scm_t_subr (gdbscm_frame_read_register), | |
f2983cc3 AW |
1140 | "\ |
1141 | Return the value of the register in the frame.\n\ | |
1142 | \n\ | |
1143 | Arguments: <gdb:frame> string" }, | |
1144 | ||
72e02483 | 1145 | { "frame-select", 1, 0, 0, as_a_scm_t_subr (gdbscm_frame_select), |
ed3ef339 DE |
1146 | "\ |
1147 | Select this frame." }, | |
1148 | ||
72e02483 | 1149 | { "newest-frame", 0, 0, 0, as_a_scm_t_subr (gdbscm_newest_frame), |
ed3ef339 DE |
1150 | "\ |
1151 | Return the newest frame." }, | |
1152 | ||
72e02483 | 1153 | { "selected-frame", 0, 0, 0, as_a_scm_t_subr (gdbscm_selected_frame), |
ed3ef339 DE |
1154 | "\ |
1155 | Return the selected frame." }, | |
1156 | ||
72e02483 PA |
1157 | { "unwind-stop-reason-string", 1, 0, 0, |
1158 | as_a_scm_t_subr (gdbscm_unwind_stop_reason_string), | |
ed3ef339 DE |
1159 | "\ |
1160 | Return a string explaining the unwind stop reason.\n\ | |
1161 | \n\ | |
1162 | Arguments: integer (the result of frame-unwind-stop-reason)" }, | |
1163 | ||
1164 | END_FUNCTIONS | |
1165 | }; | |
1166 | ||
1167 | void | |
1168 | gdbscm_initialize_frames (void) | |
1169 | { | |
1170 | frame_smob_tag | |
1171 | = gdbscm_make_smob_type (frame_smob_name, sizeof (frame_smob)); | |
ed3ef339 DE |
1172 | scm_set_smob_free (frame_smob_tag, frscm_free_frame_smob); |
1173 | scm_set_smob_print (frame_smob_tag, frscm_print_frame_smob); | |
1174 | ||
1175 | gdbscm_define_integer_constants (frame_integer_constants, 1); | |
1176 | gdbscm_define_functions (frame_functions, 1); | |
1177 | ||
1178 | block_keyword = scm_from_latin1_keyword ("block"); | |
1179 | ||
1180 | /* Register an inferior "free" callback so we can properly | |
1181 | invalidate frames when an inferior file is about to be deleted. */ | |
1182 | frscm_inferior_data_key | |
1183 | = register_inferior_data_with_cleanup (NULL, frscm_del_inferior_frames); | |
1184 | } |