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ed3ef339 DE |
1 | /* Scheme interface to stack frames. |
2 | ||
32d0add0 | 3 | Copyright (C) 2008-2015 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; | |
160 | char *s; | |
161 | ||
162 | gdbscm_printf (port, "#<%s ", frame_smob_name); | |
163 | ||
164 | strfile = mem_fileopen (); | |
165 | fprint_frame_id (strfile, f_smob->frame_id); | |
166 | s = ui_file_xstrdup (strfile, NULL); | |
167 | gdbscm_printf (port, "%s", s); | |
168 | ui_file_delete (strfile); | |
169 | xfree (s); | |
170 | ||
171 | scm_puts (">", port); | |
172 | ||
173 | scm_remember_upto_here_1 (self); | |
174 | ||
175 | /* Non-zero means success. */ | |
176 | return 1; | |
177 | } | |
178 | ||
179 | /* Low level routine to create a <gdb:frame> object. */ | |
180 | ||
181 | static SCM | |
182 | frscm_make_frame_smob (void) | |
183 | { | |
184 | frame_smob *f_smob = (frame_smob *) | |
185 | scm_gc_malloc (sizeof (frame_smob), frame_smob_name); | |
186 | SCM f_scm; | |
187 | ||
188 | f_smob->frame_id = null_frame_id; | |
189 | f_smob->gdbarch = NULL; | |
190 | f_smob->inferior = NULL; | |
191 | f_smob->frame_id_is_next = 0; | |
192 | f_scm = scm_new_smob (frame_smob_tag, (scm_t_bits) f_smob); | |
1254eefc | 193 | gdbscm_init_eqable_gsmob (&f_smob->base, f_scm); |
ed3ef339 DE |
194 | |
195 | return f_scm; | |
196 | } | |
197 | ||
198 | /* Return non-zero if SCM is a <gdb:frame> object. */ | |
199 | ||
200 | int | |
201 | frscm_is_frame (SCM scm) | |
202 | { | |
203 | return SCM_SMOB_PREDICATE (frame_smob_tag, scm); | |
204 | } | |
205 | ||
206 | /* (frame? object) -> boolean */ | |
207 | ||
208 | static SCM | |
209 | gdbscm_frame_p (SCM scm) | |
210 | { | |
211 | return scm_from_bool (frscm_is_frame (scm)); | |
212 | } | |
213 | ||
214 | /* Create a new <gdb:frame> object that encapsulates FRAME. | |
215 | Returns a <gdb:exception> object if there is an error. */ | |
216 | ||
217 | static SCM | |
218 | frscm_scm_from_frame (struct frame_info *frame, struct inferior *inferior) | |
219 | { | |
220 | frame_smob *f_smob, f_smob_for_lookup; | |
221 | SCM f_scm; | |
222 | htab_t htab; | |
223 | eqable_gdb_smob **slot; | |
ed3ef339 DE |
224 | struct frame_id frame_id = null_frame_id; |
225 | struct gdbarch *gdbarch = NULL; | |
226 | int frame_id_is_next = 0; | |
227 | ||
228 | /* If we've already created a gsmob for this frame, return it. | |
229 | This makes frames eq?-able. */ | |
230 | htab = frscm_inferior_frame_map (inferior); | |
231 | f_smob_for_lookup.frame_id = get_frame_id (frame); | |
232 | f_smob_for_lookup.inferior = inferior; | |
233 | slot = gdbscm_find_eqable_gsmob_ptr_slot (htab, &f_smob_for_lookup.base); | |
234 | if (*slot != NULL) | |
235 | return (*slot)->containing_scm; | |
236 | ||
492d29ea | 237 | TRY |
ed3ef339 DE |
238 | { |
239 | /* Try to get the previous frame, to determine if this is the last frame | |
240 | in a corrupt stack. If so, we need to store the frame_id of the next | |
241 | frame and not of this one (which is possibly invalid). */ | |
242 | if (get_prev_frame (frame) == NULL | |
243 | && get_frame_unwind_stop_reason (frame) != UNWIND_NO_REASON | |
244 | && get_next_frame (frame) != NULL) | |
245 | { | |
246 | frame_id = get_frame_id (get_next_frame (frame)); | |
247 | frame_id_is_next = 1; | |
248 | } | |
249 | else | |
250 | { | |
251 | frame_id = get_frame_id (frame); | |
252 | frame_id_is_next = 0; | |
253 | } | |
254 | gdbarch = get_frame_arch (frame); | |
255 | } | |
492d29ea PA |
256 | CATCH (except, RETURN_MASK_ALL) |
257 | { | |
258 | return gdbscm_scm_from_gdb_exception (except); | |
259 | } | |
260 | END_CATCH | |
ed3ef339 DE |
261 | |
262 | f_scm = frscm_make_frame_smob (); | |
263 | f_smob = (frame_smob *) SCM_SMOB_DATA (f_scm); | |
264 | f_smob->frame_id = frame_id; | |
265 | f_smob->gdbarch = gdbarch; | |
266 | f_smob->inferior = inferior; | |
267 | f_smob->frame_id_is_next = frame_id_is_next; | |
268 | ||
1254eefc | 269 | gdbscm_fill_eqable_gsmob_ptr_slot (slot, &f_smob->base); |
ed3ef339 DE |
270 | |
271 | return f_scm; | |
272 | } | |
273 | ||
274 | /* Create a new <gdb:frame> object that encapsulates FRAME. | |
275 | A Scheme exception is thrown if there is an error. */ | |
276 | ||
277 | static SCM | |
278 | frscm_scm_from_frame_unsafe (struct frame_info *frame, | |
279 | struct inferior *inferior) | |
280 | { | |
281 | SCM f_scm = frscm_scm_from_frame (frame, inferior); | |
282 | ||
283 | if (gdbscm_is_exception (f_scm)) | |
284 | gdbscm_throw (f_scm); | |
285 | ||
286 | return f_scm; | |
287 | } | |
288 | ||
289 | /* Returns the <gdb:frame> object in SELF. | |
290 | Throws an exception if SELF is not a <gdb:frame> object. */ | |
291 | ||
292 | static SCM | |
293 | frscm_get_frame_arg_unsafe (SCM self, int arg_pos, const char *func_name) | |
294 | { | |
295 | SCM_ASSERT_TYPE (frscm_is_frame (self), self, arg_pos, func_name, | |
296 | frame_smob_name); | |
297 | ||
298 | return self; | |
299 | } | |
300 | ||
301 | /* There is no gdbscm_scm_to_frame function because translating | |
302 | a frame SCM object to a struct frame_info * can throw a GDB error. | |
303 | Thus code working with frames has to handle both Scheme errors (e.g., the | |
304 | object is not a frame) and GDB errors (e.g., the frame lookup failed). | |
305 | ||
e9fbd043 DE |
306 | To help keep things clear we split what would be gdbscm_scm_to_frame |
307 | into two: | |
ed3ef339 | 308 | |
e9fbd043 | 309 | frscm_get_frame_smob_arg_unsafe |
ed3ef339 DE |
310 | - throws a Scheme error if object is not a frame, |
311 | or if the inferior is gone or is no longer current | |
312 | ||
e9fbd043 | 313 | frscm_frame_smob_to_frame |
ed3ef339 DE |
314 | - may throw a gdb error if the conversion fails |
315 | - it's not clear when it will and won't throw a GDB error, | |
316 | but for robustness' sake we assume that whenever we call out to GDB | |
317 | a GDB error may get thrown (and thus the call must be wrapped in a | |
318 | TRY_CATCH) */ | |
319 | ||
320 | /* Returns the frame_smob for the object wrapped by FRAME_SCM. | |
321 | A Scheme error is thrown if FRAME_SCM is not a frame. */ | |
322 | ||
323 | frame_smob * | |
324 | frscm_get_frame_smob_arg_unsafe (SCM self, int arg_pos, const char *func_name) | |
325 | { | |
326 | SCM f_scm = frscm_get_frame_arg_unsafe (self, arg_pos, func_name); | |
327 | frame_smob *f_smob = (frame_smob *) SCM_SMOB_DATA (f_scm); | |
328 | ||
329 | if (f_smob->inferior == NULL) | |
330 | { | |
331 | gdbscm_invalid_object_error (func_name, arg_pos, self, | |
332 | _("inferior")); | |
333 | } | |
334 | if (f_smob->inferior != current_inferior ()) | |
335 | scm_misc_error (func_name, _("inferior has changed"), SCM_EOL); | |
336 | ||
337 | return f_smob; | |
338 | } | |
339 | ||
340 | /* Returns the frame_info object wrapped by F_SMOB. | |
341 | If the frame doesn't exist anymore (the frame id doesn't | |
342 | correspond to any frame in the inferior), returns NULL. | |
343 | This function calls GDB routines, so don't assume a GDB error will | |
344 | not be thrown. */ | |
345 | ||
346 | struct frame_info * | |
347 | frscm_frame_smob_to_frame (frame_smob *f_smob) | |
348 | { | |
349 | struct frame_info *frame; | |
350 | ||
351 | frame = frame_find_by_id (f_smob->frame_id); | |
352 | if (frame == NULL) | |
353 | return NULL; | |
354 | ||
355 | if (f_smob->frame_id_is_next) | |
356 | frame = get_prev_frame (frame); | |
357 | ||
358 | return frame; | |
359 | } | |
360 | ||
361 | /* Helper function for frscm_del_inferior_frames to mark the frame | |
362 | as invalid. */ | |
363 | ||
364 | static int | |
365 | frscm_mark_frame_invalid (void **slot, void *info) | |
366 | { | |
367 | frame_smob *f_smob = (frame_smob *) *slot; | |
368 | ||
369 | f_smob->inferior = NULL; | |
370 | return 1; | |
371 | } | |
372 | ||
373 | /* This function is called when an inferior is about to be freed. | |
374 | Invalidate the frame as further actions on the frame could result | |
375 | in bad data. All access to the frame should be gated by | |
376 | frscm_get_frame_smob_arg_unsafe which will raise an exception on | |
377 | invalid frames. */ | |
378 | ||
379 | static void | |
380 | frscm_del_inferior_frames (struct inferior *inferior, void *datum) | |
381 | { | |
9a3c8263 | 382 | htab_t htab = (htab_t) datum; |
ed3ef339 DE |
383 | |
384 | if (htab != NULL) | |
385 | { | |
386 | htab_traverse_noresize (htab, frscm_mark_frame_invalid, NULL); | |
387 | htab_delete (htab); | |
388 | } | |
389 | } | |
390 | \f | |
391 | /* Frame methods. */ | |
392 | ||
393 | /* (frame-valid? <gdb:frame>) -> bool | |
394 | Returns #t if the frame corresponding to the frame_id of this | |
395 | object still exists in the inferior. */ | |
396 | ||
397 | static SCM | |
398 | gdbscm_frame_valid_p (SCM self) | |
399 | { | |
400 | frame_smob *f_smob; | |
401 | struct frame_info *frame = NULL; | |
ed3ef339 DE |
402 | |
403 | f_smob = frscm_get_frame_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
404 | ||
492d29ea | 405 | TRY |
ed3ef339 DE |
406 | { |
407 | frame = frscm_frame_smob_to_frame (f_smob); | |
408 | } | |
492d29ea PA |
409 | CATCH (except, RETURN_MASK_ALL) |
410 | { | |
411 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
412 | } | |
413 | END_CATCH | |
ed3ef339 DE |
414 | |
415 | return scm_from_bool (frame != NULL); | |
416 | } | |
417 | ||
418 | /* (frame-name <gdb:frame>) -> string | |
419 | Returns the name of the function corresponding to this frame, | |
420 | or #f if there is no function. */ | |
421 | ||
422 | static SCM | |
423 | gdbscm_frame_name (SCM self) | |
424 | { | |
425 | frame_smob *f_smob; | |
426 | char *name = NULL; | |
427 | enum language lang = language_minimal; | |
428 | struct frame_info *frame = NULL; | |
429 | SCM result; | |
ed3ef339 DE |
430 | |
431 | f_smob = frscm_get_frame_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
432 | ||
492d29ea | 433 | TRY |
ed3ef339 DE |
434 | { |
435 | frame = frscm_frame_smob_to_frame (f_smob); | |
436 | if (frame != NULL) | |
437 | find_frame_funname (frame, &name, &lang, NULL); | |
438 | } | |
6c63c96a | 439 | CATCH (except, RETURN_MASK_ALL) |
492d29ea | 440 | { |
6c63c96a PA |
441 | xfree (name); |
442 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
492d29ea PA |
443 | } |
444 | END_CATCH | |
445 | ||
ed3ef339 DE |
446 | if (frame == NULL) |
447 | { | |
448 | gdbscm_invalid_object_error (FUNC_NAME, SCM_ARG1, self, | |
449 | _("<gdb:frame>")); | |
450 | } | |
451 | ||
452 | if (name != NULL) | |
453 | { | |
454 | result = gdbscm_scm_from_c_string (name); | |
455 | xfree (name); | |
456 | } | |
457 | else | |
458 | result = SCM_BOOL_F; | |
459 | ||
460 | return result; | |
461 | } | |
462 | ||
463 | /* (frame-type <gdb:frame>) -> integer | |
464 | Returns the frame type, namely one of the gdb:*_FRAME constants. */ | |
465 | ||
466 | static SCM | |
467 | gdbscm_frame_type (SCM self) | |
468 | { | |
469 | frame_smob *f_smob; | |
470 | enum frame_type type = NORMAL_FRAME; | |
471 | struct frame_info *frame = NULL; | |
ed3ef339 DE |
472 | |
473 | f_smob = frscm_get_frame_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
474 | ||
492d29ea | 475 | TRY |
ed3ef339 DE |
476 | { |
477 | frame = frscm_frame_smob_to_frame (f_smob); | |
478 | if (frame != NULL) | |
479 | type = get_frame_type (frame); | |
480 | } | |
492d29ea PA |
481 | CATCH (except, RETURN_MASK_ALL) |
482 | { | |
483 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
484 | } | |
485 | END_CATCH | |
ed3ef339 DE |
486 | |
487 | if (frame == NULL) | |
488 | { | |
489 | gdbscm_invalid_object_error (FUNC_NAME, SCM_ARG1, self, | |
490 | _("<gdb:frame>")); | |
491 | } | |
492 | ||
493 | return scm_from_int (type); | |
494 | } | |
495 | ||
496 | /* (frame-arch <gdb:frame>) -> <gdb:architecture> | |
497 | Returns the frame's architecture as a gdb:architecture object. */ | |
498 | ||
499 | static SCM | |
500 | gdbscm_frame_arch (SCM self) | |
501 | { | |
502 | frame_smob *f_smob; | |
503 | struct frame_info *frame = NULL; | |
ed3ef339 DE |
504 | |
505 | f_smob = frscm_get_frame_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
506 | ||
492d29ea | 507 | TRY |
ed3ef339 DE |
508 | { |
509 | frame = frscm_frame_smob_to_frame (f_smob); | |
510 | } | |
492d29ea PA |
511 | CATCH (except, RETURN_MASK_ALL) |
512 | { | |
513 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
514 | } | |
515 | END_CATCH | |
ed3ef339 DE |
516 | |
517 | if (frame == NULL) | |
518 | { | |
519 | gdbscm_invalid_object_error (FUNC_NAME, SCM_ARG1, self, | |
520 | _("<gdb:frame>")); | |
521 | } | |
522 | ||
523 | return arscm_scm_from_arch (f_smob->gdbarch); | |
524 | } | |
525 | ||
526 | /* (frame-unwind-stop-reason <gdb:frame>) -> integer | |
527 | Returns one of the gdb:FRAME_UNWIND_* constants. */ | |
528 | ||
529 | static SCM | |
530 | gdbscm_frame_unwind_stop_reason (SCM self) | |
531 | { | |
532 | frame_smob *f_smob; | |
533 | struct frame_info *frame = NULL; | |
ed3ef339 DE |
534 | enum unwind_stop_reason stop_reason; |
535 | ||
536 | f_smob = frscm_get_frame_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
537 | ||
492d29ea | 538 | TRY |
ed3ef339 DE |
539 | { |
540 | frame = frscm_frame_smob_to_frame (f_smob); | |
541 | } | |
492d29ea PA |
542 | CATCH (except, RETURN_MASK_ALL) |
543 | { | |
544 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
545 | } | |
546 | END_CATCH | |
ed3ef339 DE |
547 | |
548 | if (frame == NULL) | |
549 | { | |
550 | gdbscm_invalid_object_error (FUNC_NAME, SCM_ARG1, self, | |
551 | _("<gdb:frame>")); | |
552 | } | |
553 | ||
554 | stop_reason = get_frame_unwind_stop_reason (frame); | |
555 | ||
556 | return scm_from_int (stop_reason); | |
557 | } | |
558 | ||
559 | /* (frame-pc <gdb:frame>) -> integer | |
560 | Returns the frame's resume address. */ | |
561 | ||
562 | static SCM | |
563 | gdbscm_frame_pc (SCM self) | |
564 | { | |
565 | frame_smob *f_smob; | |
566 | CORE_ADDR pc = 0; | |
567 | struct frame_info *frame = NULL; | |
ed3ef339 DE |
568 | |
569 | f_smob = frscm_get_frame_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
570 | ||
492d29ea | 571 | TRY |
ed3ef339 DE |
572 | { |
573 | frame = frscm_frame_smob_to_frame (f_smob); | |
574 | if (frame != NULL) | |
575 | pc = get_frame_pc (frame); | |
576 | } | |
492d29ea PA |
577 | CATCH (except, RETURN_MASK_ALL) |
578 | { | |
579 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
580 | } | |
581 | END_CATCH | |
ed3ef339 DE |
582 | |
583 | if (frame == NULL) | |
584 | { | |
585 | gdbscm_invalid_object_error (FUNC_NAME, SCM_ARG1, self, | |
586 | _("<gdb:frame>")); | |
587 | } | |
588 | ||
589 | return gdbscm_scm_from_ulongest (pc); | |
590 | } | |
591 | ||
592 | /* (frame-block <gdb:frame>) -> <gdb:block> | |
593 | Returns the frame's code block, or #f if one cannot be found. */ | |
594 | ||
595 | static SCM | |
596 | gdbscm_frame_block (SCM self) | |
597 | { | |
598 | frame_smob *f_smob; | |
3977b71f | 599 | const struct block *block = NULL, *fn_block; |
ed3ef339 | 600 | struct frame_info *frame = NULL; |
ed3ef339 DE |
601 | |
602 | f_smob = frscm_get_frame_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
603 | ||
492d29ea | 604 | TRY |
ed3ef339 DE |
605 | { |
606 | frame = frscm_frame_smob_to_frame (f_smob); | |
607 | if (frame != NULL) | |
608 | block = get_frame_block (frame, NULL); | |
609 | } | |
492d29ea PA |
610 | CATCH (except, RETURN_MASK_ALL) |
611 | { | |
612 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
613 | } | |
614 | END_CATCH | |
ed3ef339 DE |
615 | |
616 | if (frame == NULL) | |
617 | { | |
618 | gdbscm_invalid_object_error (FUNC_NAME, SCM_ARG1, self, | |
619 | _("<gdb:frame>")); | |
620 | } | |
621 | ||
622 | for (fn_block = block; | |
623 | fn_block != NULL && BLOCK_FUNCTION (fn_block) == NULL; | |
624 | fn_block = BLOCK_SUPERBLOCK (fn_block)) | |
625 | continue; | |
626 | ||
627 | if (block == NULL || fn_block == NULL || BLOCK_FUNCTION (fn_block) == NULL) | |
628 | { | |
629 | scm_misc_error (FUNC_NAME, _("cannot find block for frame"), | |
630 | scm_list_1 (self)); | |
631 | } | |
632 | ||
633 | if (block != NULL) | |
634 | { | |
08be3fe3 DE |
635 | return bkscm_scm_from_block |
636 | (block, symbol_objfile (BLOCK_FUNCTION (fn_block))); | |
ed3ef339 DE |
637 | } |
638 | ||
639 | return SCM_BOOL_F; | |
640 | } | |
641 | ||
642 | /* (frame-function <gdb:frame>) -> <gdb:symbol> | |
643 | Returns the symbol for the function corresponding to this frame, | |
644 | or #f if there isn't one. */ | |
645 | ||
646 | static SCM | |
647 | gdbscm_frame_function (SCM self) | |
648 | { | |
649 | frame_smob *f_smob; | |
650 | struct symbol *sym = NULL; | |
651 | struct frame_info *frame = NULL; | |
ed3ef339 DE |
652 | |
653 | f_smob = frscm_get_frame_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
654 | ||
492d29ea | 655 | TRY |
ed3ef339 DE |
656 | { |
657 | frame = frscm_frame_smob_to_frame (f_smob); | |
658 | if (frame != NULL) | |
659 | sym = find_pc_function (get_frame_address_in_block (frame)); | |
660 | } | |
492d29ea PA |
661 | CATCH (except, RETURN_MASK_ALL) |
662 | { | |
663 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
664 | } | |
665 | END_CATCH | |
ed3ef339 DE |
666 | |
667 | if (frame == NULL) | |
668 | { | |
669 | gdbscm_invalid_object_error (FUNC_NAME, SCM_ARG1, self, | |
670 | _("<gdb:frame>")); | |
671 | } | |
672 | ||
673 | if (sym != NULL) | |
674 | return syscm_scm_from_symbol (sym); | |
675 | ||
676 | return SCM_BOOL_F; | |
677 | } | |
678 | ||
679 | /* (frame-older <gdb:frame>) -> <gdb:frame> | |
680 | Returns the frame immediately older (outer) to this frame, | |
681 | or #f if there isn't one. */ | |
682 | ||
683 | static SCM | |
684 | gdbscm_frame_older (SCM self) | |
685 | { | |
686 | frame_smob *f_smob; | |
687 | struct frame_info *prev = NULL; | |
688 | struct frame_info *frame = NULL; | |
ed3ef339 DE |
689 | |
690 | f_smob = frscm_get_frame_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
691 | ||
492d29ea | 692 | TRY |
ed3ef339 DE |
693 | { |
694 | frame = frscm_frame_smob_to_frame (f_smob); | |
695 | if (frame != NULL) | |
696 | prev = get_prev_frame (frame); | |
697 | } | |
492d29ea PA |
698 | CATCH (except, RETURN_MASK_ALL) |
699 | { | |
700 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
701 | } | |
702 | END_CATCH | |
ed3ef339 DE |
703 | |
704 | if (frame == NULL) | |
705 | { | |
706 | gdbscm_invalid_object_error (FUNC_NAME, SCM_ARG1, self, | |
707 | _("<gdb:frame>")); | |
708 | } | |
709 | ||
710 | if (prev != NULL) | |
711 | return frscm_scm_from_frame_unsafe (prev, f_smob->inferior); | |
712 | ||
713 | return SCM_BOOL_F; | |
714 | } | |
715 | ||
716 | /* (frame-newer <gdb:frame>) -> <gdb:frame> | |
717 | Returns the frame immediately newer (inner) to this frame, | |
718 | or #f if there isn't one. */ | |
719 | ||
720 | static SCM | |
721 | gdbscm_frame_newer (SCM self) | |
722 | { | |
723 | frame_smob *f_smob; | |
724 | struct frame_info *next = NULL; | |
725 | struct frame_info *frame = NULL; | |
ed3ef339 DE |
726 | |
727 | f_smob = frscm_get_frame_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
728 | ||
492d29ea | 729 | TRY |
ed3ef339 DE |
730 | { |
731 | frame = frscm_frame_smob_to_frame (f_smob); | |
732 | if (frame != NULL) | |
733 | next = get_next_frame (frame); | |
734 | } | |
492d29ea PA |
735 | CATCH (except, RETURN_MASK_ALL) |
736 | { | |
737 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
738 | } | |
739 | END_CATCH | |
ed3ef339 DE |
740 | |
741 | if (frame == NULL) | |
742 | { | |
743 | gdbscm_invalid_object_error (FUNC_NAME, SCM_ARG1, self, | |
744 | _("<gdb:frame>")); | |
745 | } | |
746 | ||
747 | if (next != NULL) | |
748 | return frscm_scm_from_frame_unsafe (next, f_smob->inferior); | |
749 | ||
750 | return SCM_BOOL_F; | |
751 | } | |
752 | ||
753 | /* (frame-sal <gdb:frame>) -> <gdb:sal> | |
754 | Returns the frame's symtab and line. */ | |
755 | ||
756 | static SCM | |
757 | gdbscm_frame_sal (SCM self) | |
758 | { | |
759 | frame_smob *f_smob; | |
760 | struct symtab_and_line sal; | |
761 | struct frame_info *frame = NULL; | |
ed3ef339 DE |
762 | |
763 | f_smob = frscm_get_frame_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
764 | ||
492d29ea | 765 | TRY |
ed3ef339 DE |
766 | { |
767 | frame = frscm_frame_smob_to_frame (f_smob); | |
768 | if (frame != NULL) | |
769 | find_frame_sal (frame, &sal); | |
770 | } | |
492d29ea PA |
771 | CATCH (except, RETURN_MASK_ALL) |
772 | { | |
773 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
774 | } | |
775 | END_CATCH | |
ed3ef339 DE |
776 | |
777 | if (frame == NULL) | |
778 | { | |
779 | gdbscm_invalid_object_error (FUNC_NAME, SCM_ARG1, self, | |
780 | _("<gdb:frame>")); | |
781 | } | |
782 | ||
783 | return stscm_scm_from_sal (sal); | |
784 | } | |
785 | ||
f2983cc3 AW |
786 | /* (frame-read-register <gdb:frame> string) -> <gdb:value> |
787 | The register argument must be a string. */ | |
788 | ||
789 | static SCM | |
790 | gdbscm_frame_read_register (SCM self, SCM register_scm) | |
791 | { | |
792 | char *register_str; | |
793 | struct value *value = NULL; | |
794 | struct frame_info *frame = NULL; | |
795 | struct cleanup *cleanup; | |
796 | frame_smob *f_smob; | |
797 | ||
798 | f_smob = frscm_get_frame_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
799 | gdbscm_parse_function_args (FUNC_NAME, SCM_ARG2, NULL, "s", | |
800 | register_scm, ®ister_str); | |
801 | cleanup = make_cleanup (xfree, register_str); | |
802 | ||
803 | TRY | |
804 | { | |
805 | int regnum; | |
806 | ||
807 | frame = frscm_frame_smob_to_frame (f_smob); | |
808 | if (frame) | |
809 | { | |
810 | regnum = user_reg_map_name_to_regnum (get_frame_arch (frame), | |
811 | register_str, | |
812 | strlen (register_str)); | |
813 | if (regnum >= 0) | |
814 | value = value_of_register (regnum, frame); | |
815 | } | |
816 | } | |
817 | CATCH (except, RETURN_MASK_ALL) | |
818 | { | |
819 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
820 | } | |
821 | END_CATCH | |
822 | ||
823 | do_cleanups (cleanup); | |
824 | ||
825 | if (frame == NULL) | |
826 | { | |
827 | gdbscm_invalid_object_error (FUNC_NAME, SCM_ARG1, self, | |
828 | _("<gdb:frame>")); | |
829 | } | |
830 | ||
831 | if (value == NULL) | |
832 | { | |
833 | gdbscm_out_of_range_error (FUNC_NAME, SCM_ARG2, register_scm, | |
834 | _("unknown register")); | |
835 | } | |
836 | ||
837 | return vlscm_scm_from_value (value); | |
838 | } | |
839 | ||
ed3ef339 DE |
840 | /* (frame-read-var <gdb:frame> <gdb:symbol>) -> <gdb:value> |
841 | (frame-read-var <gdb:frame> string [#:block <gdb:block>]) -> <gdb:value> | |
842 | If the optional block argument is provided start the search from that block, | |
843 | otherwise search from the frame's current block (determined by examining | |
844 | the resume address of the frame). The variable argument must be a string | |
845 | or an instance of a <gdb:symbol>. The block argument must be an instance of | |
846 | <gdb:block>. */ | |
847 | ||
848 | static SCM | |
849 | gdbscm_frame_read_var (SCM self, SCM symbol_scm, SCM rest) | |
850 | { | |
851 | SCM keywords[] = { block_keyword, SCM_BOOL_F }; | |
852 | int rc; | |
853 | frame_smob *f_smob; | |
854 | int block_arg_pos = -1; | |
855 | SCM block_scm = SCM_UNDEFINED; | |
856 | struct frame_info *frame = NULL; | |
857 | struct symbol *var = NULL; | |
63e43d3a | 858 | const struct block *block = NULL; |
ed3ef339 | 859 | struct value *value = NULL; |
ed3ef339 DE |
860 | |
861 | f_smob = frscm_get_frame_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
862 | ||
492d29ea | 863 | TRY |
ed3ef339 DE |
864 | { |
865 | frame = frscm_frame_smob_to_frame (f_smob); | |
866 | } | |
492d29ea PA |
867 | CATCH (except, RETURN_MASK_ALL) |
868 | { | |
869 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
870 | } | |
871 | END_CATCH | |
ed3ef339 DE |
872 | |
873 | if (frame == NULL) | |
874 | { | |
875 | gdbscm_invalid_object_error (FUNC_NAME, SCM_ARG1, self, | |
876 | _("<gdb:frame>")); | |
877 | } | |
878 | ||
879 | gdbscm_parse_function_args (FUNC_NAME, SCM_ARG3, keywords, "#O", | |
880 | rest, &block_arg_pos, &block_scm); | |
881 | ||
882 | if (syscm_is_symbol (symbol_scm)) | |
883 | { | |
884 | var = syscm_get_valid_symbol_arg_unsafe (symbol_scm, SCM_ARG2, | |
885 | FUNC_NAME); | |
886 | SCM_ASSERT (SCM_UNBNDP (block_scm), block_scm, SCM_ARG3, FUNC_NAME); | |
887 | } | |
888 | else if (scm_is_string (symbol_scm)) | |
889 | { | |
890 | char *var_name; | |
891 | const struct block *block = NULL; | |
892 | struct cleanup *cleanup; | |
492d29ea | 893 | struct gdb_exception except = exception_none; |
ed3ef339 DE |
894 | |
895 | if (! SCM_UNBNDP (block_scm)) | |
896 | { | |
897 | SCM except_scm; | |
898 | ||
899 | gdb_assert (block_arg_pos > 0); | |
900 | block = bkscm_scm_to_block (block_scm, block_arg_pos, FUNC_NAME, | |
901 | &except_scm); | |
902 | if (block == NULL) | |
903 | gdbscm_throw (except_scm); | |
904 | } | |
905 | ||
906 | var_name = gdbscm_scm_to_c_string (symbol_scm); | |
907 | cleanup = make_cleanup (xfree, var_name); | |
908 | /* N.B. Between here and the call to do_cleanups, don't do anything | |
909 | to cause a Scheme exception without performing the cleanup. */ | |
910 | ||
492d29ea | 911 | TRY |
ed3ef339 | 912 | { |
63e43d3a PMR |
913 | struct block_symbol lookup_sym; |
914 | ||
ed3ef339 DE |
915 | if (block == NULL) |
916 | block = get_frame_block (frame, NULL); | |
63e43d3a PMR |
917 | lookup_sym = lookup_symbol (var_name, block, VAR_DOMAIN, NULL); |
918 | var = lookup_sym.symbol; | |
919 | block = lookup_sym.block; | |
ed3ef339 | 920 | } |
492d29ea PA |
921 | CATCH (ex, RETURN_MASK_ALL) |
922 | { | |
923 | except = ex; | |
924 | } | |
925 | END_CATCH | |
926 | ||
927 | do_cleanups (cleanup); | |
ed3ef339 DE |
928 | GDBSCM_HANDLE_GDB_EXCEPTION (except); |
929 | ||
930 | if (var == NULL) | |
931 | { | |
932 | do_cleanups (cleanup); | |
933 | gdbscm_out_of_range_error (FUNC_NAME, 0, symbol_scm, | |
934 | _("variable not found")); | |
935 | } | |
936 | ||
937 | do_cleanups (cleanup); | |
938 | } | |
939 | else | |
940 | { | |
941 | /* Use SCM_ASSERT_TYPE for more consistent error messages. */ | |
942 | SCM_ASSERT_TYPE (0, symbol_scm, SCM_ARG1, FUNC_NAME, | |
943 | _("gdb:symbol or string")); | |
944 | } | |
945 | ||
492d29ea | 946 | TRY |
ed3ef339 | 947 | { |
63e43d3a | 948 | value = read_var_value (var, block, frame); |
ed3ef339 | 949 | } |
492d29ea PA |
950 | CATCH (except, RETURN_MASK_ALL) |
951 | { | |
952 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
953 | } | |
954 | END_CATCH | |
ed3ef339 DE |
955 | |
956 | return vlscm_scm_from_value (value); | |
957 | } | |
958 | ||
959 | /* (frame-select <gdb:frame>) -> unspecified | |
960 | Select this frame. */ | |
961 | ||
962 | static SCM | |
963 | gdbscm_frame_select (SCM self) | |
964 | { | |
965 | frame_smob *f_smob; | |
966 | struct frame_info *frame = NULL; | |
ed3ef339 DE |
967 | |
968 | f_smob = frscm_get_frame_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
969 | ||
492d29ea | 970 | TRY |
ed3ef339 DE |
971 | { |
972 | frame = frscm_frame_smob_to_frame (f_smob); | |
973 | if (frame != NULL) | |
974 | select_frame (frame); | |
975 | } | |
492d29ea PA |
976 | CATCH (except, RETURN_MASK_ALL) |
977 | { | |
978 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
979 | } | |
980 | END_CATCH | |
ed3ef339 DE |
981 | |
982 | if (frame == NULL) | |
983 | { | |
984 | gdbscm_invalid_object_error (FUNC_NAME, SCM_ARG1, self, | |
985 | _("<gdb:frame>")); | |
986 | } | |
987 | ||
988 | return SCM_UNSPECIFIED; | |
989 | } | |
990 | ||
991 | /* (newest-frame) -> <gdb:frame> | |
992 | Returns the newest frame. */ | |
993 | ||
994 | static SCM | |
995 | gdbscm_newest_frame (void) | |
996 | { | |
997 | struct frame_info *frame = NULL; | |
ed3ef339 | 998 | |
492d29ea | 999 | TRY |
ed3ef339 DE |
1000 | { |
1001 | frame = get_current_frame (); | |
1002 | } | |
492d29ea PA |
1003 | CATCH (except, RETURN_MASK_ALL) |
1004 | { | |
1005 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
1006 | } | |
1007 | END_CATCH | |
ed3ef339 DE |
1008 | |
1009 | return frscm_scm_from_frame_unsafe (frame, current_inferior ()); | |
1010 | } | |
1011 | ||
1012 | /* (selected-frame) -> <gdb:frame> | |
1013 | Returns the selected frame. */ | |
1014 | ||
1015 | static SCM | |
1016 | gdbscm_selected_frame (void) | |
1017 | { | |
1018 | struct frame_info *frame = NULL; | |
ed3ef339 | 1019 | |
492d29ea | 1020 | TRY |
ed3ef339 DE |
1021 | { |
1022 | frame = get_selected_frame (_("No frame is currently selected")); | |
1023 | } | |
492d29ea PA |
1024 | CATCH (except, RETURN_MASK_ALL) |
1025 | { | |
1026 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
1027 | } | |
1028 | END_CATCH | |
ed3ef339 DE |
1029 | |
1030 | return frscm_scm_from_frame_unsafe (frame, current_inferior ()); | |
1031 | } | |
1032 | ||
1033 | /* (unwind-stop-reason-string integer) -> string | |
1034 | Return a string explaining the unwind stop reason. */ | |
1035 | ||
1036 | static SCM | |
1037 | gdbscm_unwind_stop_reason_string (SCM reason_scm) | |
1038 | { | |
1039 | int reason; | |
1040 | const char *str; | |
1041 | ||
1042 | gdbscm_parse_function_args (FUNC_NAME, SCM_ARG1, NULL, "i", | |
1043 | reason_scm, &reason); | |
1044 | ||
1045 | if (reason < UNWIND_FIRST || reason > UNWIND_LAST) | |
1046 | scm_out_of_range (FUNC_NAME, reason_scm); | |
1047 | ||
70e38b8e | 1048 | str = unwind_stop_reason_to_string (reason); |
ed3ef339 DE |
1049 | return gdbscm_scm_from_c_string (str); |
1050 | } | |
1051 | \f | |
1052 | /* Initialize the Scheme frame support. */ | |
1053 | ||
1054 | static const scheme_integer_constant frame_integer_constants[] = | |
1055 | { | |
1056 | #define ENTRY(X) { #X, X } | |
1057 | ||
1058 | ENTRY (NORMAL_FRAME), | |
1059 | ENTRY (DUMMY_FRAME), | |
1060 | ENTRY (INLINE_FRAME), | |
1061 | ENTRY (TAILCALL_FRAME), | |
1062 | ENTRY (SIGTRAMP_FRAME), | |
1063 | ENTRY (ARCH_FRAME), | |
1064 | ENTRY (SENTINEL_FRAME), | |
1065 | ||
1066 | #undef ENTRY | |
1067 | ||
1068 | #define SET(name, description) \ | |
1069 | { "FRAME_" #name, name }, | |
1070 | #include "unwind_stop_reasons.def" | |
1071 | #undef SET | |
1072 | ||
1073 | END_INTEGER_CONSTANTS | |
1074 | }; | |
1075 | ||
1076 | static const scheme_function frame_functions[] = | |
1077 | { | |
72e02483 | 1078 | { "frame?", 1, 0, 0, as_a_scm_t_subr (gdbscm_frame_p), |
ed3ef339 DE |
1079 | "\ |
1080 | Return #t if the object is a <gdb:frame> object." }, | |
1081 | ||
72e02483 | 1082 | { "frame-valid?", 1, 0, 0, as_a_scm_t_subr (gdbscm_frame_valid_p), |
ed3ef339 DE |
1083 | "\ |
1084 | Return #t if the object is a valid <gdb:frame> object.\n\ | |
1085 | Frames become invalid when the inferior returns to its caller." }, | |
1086 | ||
72e02483 | 1087 | { "frame-name", 1, 0, 0, as_a_scm_t_subr (gdbscm_frame_name), |
ed3ef339 DE |
1088 | "\ |
1089 | Return the name of the function corresponding to this frame,\n\ | |
1090 | or #f if there is no function." }, | |
1091 | ||
72e02483 | 1092 | { "frame-arch", 1, 0, 0, as_a_scm_t_subr (gdbscm_frame_arch), |
ed3ef339 DE |
1093 | "\ |
1094 | Return the frame's architecture as a <gdb:arch> object." }, | |
1095 | ||
72e02483 | 1096 | { "frame-type", 1, 0, 0, as_a_scm_t_subr (gdbscm_frame_type), |
ed3ef339 DE |
1097 | "\ |
1098 | Return the frame type, namely one of the gdb:*_FRAME constants." }, | |
1099 | ||
72e02483 PA |
1100 | { "frame-unwind-stop-reason", 1, 0, 0, |
1101 | as_a_scm_t_subr (gdbscm_frame_unwind_stop_reason), | |
ed3ef339 DE |
1102 | "\ |
1103 | Return one of the gdb:FRAME_UNWIND_* constants explaining why\n\ | |
1104 | it's not possible to find frames older than this." }, | |
1105 | ||
72e02483 | 1106 | { "frame-pc", 1, 0, 0, as_a_scm_t_subr (gdbscm_frame_pc), |
ed3ef339 DE |
1107 | "\ |
1108 | Return the frame's resume address." }, | |
1109 | ||
72e02483 | 1110 | { "frame-block", 1, 0, 0, as_a_scm_t_subr (gdbscm_frame_block), |
ed3ef339 DE |
1111 | "\ |
1112 | Return the frame's code block, or #f if one cannot be found." }, | |
1113 | ||
72e02483 | 1114 | { "frame-function", 1, 0, 0, as_a_scm_t_subr (gdbscm_frame_function), |
ed3ef339 DE |
1115 | "\ |
1116 | Return the <gdb:symbol> for the function corresponding to this frame,\n\ | |
1117 | or #f if there isn't one." }, | |
1118 | ||
72e02483 | 1119 | { "frame-older", 1, 0, 0, as_a_scm_t_subr (gdbscm_frame_older), |
ed3ef339 DE |
1120 | "\ |
1121 | Return the frame immediately older (outer) to this frame,\n\ | |
1122 | or #f if there isn't one." }, | |
1123 | ||
72e02483 | 1124 | { "frame-newer", 1, 0, 0, as_a_scm_t_subr (gdbscm_frame_newer), |
ed3ef339 DE |
1125 | "\ |
1126 | Return the frame immediately newer (inner) to this frame,\n\ | |
1127 | or #f if there isn't one." }, | |
1128 | ||
72e02483 | 1129 | { "frame-sal", 1, 0, 0, as_a_scm_t_subr (gdbscm_frame_sal), |
ed3ef339 DE |
1130 | "\ |
1131 | Return the frame's symtab-and-line <gdb:sal> object." }, | |
1132 | ||
72e02483 | 1133 | { "frame-read-var", 2, 0, 1, as_a_scm_t_subr (gdbscm_frame_read_var), |
ed3ef339 DE |
1134 | "\ |
1135 | Return the value of the symbol in the frame.\n\ | |
1136 | \n\ | |
1137 | Arguments: <gdb:frame> <gdb:symbol>\n\ | |
1138 | Or: <gdb:frame> string [#:block <gdb:block>]" }, | |
1139 | ||
72e02483 PA |
1140 | { "frame-read-register", 2, 0, 0, |
1141 | as_a_scm_t_subr (gdbscm_frame_read_register), | |
f2983cc3 AW |
1142 | "\ |
1143 | Return the value of the register in the frame.\n\ | |
1144 | \n\ | |
1145 | Arguments: <gdb:frame> string" }, | |
1146 | ||
72e02483 | 1147 | { "frame-select", 1, 0, 0, as_a_scm_t_subr (gdbscm_frame_select), |
ed3ef339 DE |
1148 | "\ |
1149 | Select this frame." }, | |
1150 | ||
72e02483 | 1151 | { "newest-frame", 0, 0, 0, as_a_scm_t_subr (gdbscm_newest_frame), |
ed3ef339 DE |
1152 | "\ |
1153 | Return the newest frame." }, | |
1154 | ||
72e02483 | 1155 | { "selected-frame", 0, 0, 0, as_a_scm_t_subr (gdbscm_selected_frame), |
ed3ef339 DE |
1156 | "\ |
1157 | Return the selected frame." }, | |
1158 | ||
72e02483 PA |
1159 | { "unwind-stop-reason-string", 1, 0, 0, |
1160 | as_a_scm_t_subr (gdbscm_unwind_stop_reason_string), | |
ed3ef339 DE |
1161 | "\ |
1162 | Return a string explaining the unwind stop reason.\n\ | |
1163 | \n\ | |
1164 | Arguments: integer (the result of frame-unwind-stop-reason)" }, | |
1165 | ||
1166 | END_FUNCTIONS | |
1167 | }; | |
1168 | ||
1169 | void | |
1170 | gdbscm_initialize_frames (void) | |
1171 | { | |
1172 | frame_smob_tag | |
1173 | = gdbscm_make_smob_type (frame_smob_name, sizeof (frame_smob)); | |
ed3ef339 DE |
1174 | scm_set_smob_free (frame_smob_tag, frscm_free_frame_smob); |
1175 | scm_set_smob_print (frame_smob_tag, frscm_print_frame_smob); | |
1176 | ||
1177 | gdbscm_define_integer_constants (frame_integer_constants, 1); | |
1178 | gdbscm_define_functions (frame_functions, 1); | |
1179 | ||
1180 | block_keyword = scm_from_latin1_keyword ("block"); | |
1181 | ||
1182 | /* Register an inferior "free" callback so we can properly | |
1183 | invalidate frames when an inferior file is about to be deleted. */ | |
1184 | frscm_inferior_data_key | |
1185 | = register_inferior_data_with_cleanup (NULL, frscm_del_inferior_frames); | |
1186 | } |