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ed3ef339 DE |
1 | /* Scheme interface to stack frames. |
2 | ||
42a4f53d | 3 | Copyright (C) 2008-2019 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); | |
ed3ef339 DE |
159 | |
160 | gdbscm_printf (port, "#<%s ", frame_smob_name); | |
161 | ||
d7e74731 PA |
162 | string_file strfile; |
163 | fprint_frame_id (&strfile, f_smob->frame_id); | |
164 | gdbscm_printf (port, "%s", strfile.c_str ()); | |
ed3ef339 DE |
165 | |
166 | scm_puts (">", port); | |
167 | ||
168 | scm_remember_upto_here_1 (self); | |
169 | ||
170 | /* Non-zero means success. */ | |
171 | return 1; | |
172 | } | |
173 | ||
174 | /* Low level routine to create a <gdb:frame> object. */ | |
175 | ||
176 | static SCM | |
177 | frscm_make_frame_smob (void) | |
178 | { | |
179 | frame_smob *f_smob = (frame_smob *) | |
180 | scm_gc_malloc (sizeof (frame_smob), frame_smob_name); | |
181 | SCM f_scm; | |
182 | ||
183 | f_smob->frame_id = null_frame_id; | |
184 | f_smob->gdbarch = NULL; | |
185 | f_smob->inferior = NULL; | |
186 | f_smob->frame_id_is_next = 0; | |
187 | f_scm = scm_new_smob (frame_smob_tag, (scm_t_bits) f_smob); | |
1254eefc | 188 | gdbscm_init_eqable_gsmob (&f_smob->base, f_scm); |
ed3ef339 DE |
189 | |
190 | return f_scm; | |
191 | } | |
192 | ||
193 | /* Return non-zero if SCM is a <gdb:frame> object. */ | |
194 | ||
195 | int | |
196 | frscm_is_frame (SCM scm) | |
197 | { | |
198 | return SCM_SMOB_PREDICATE (frame_smob_tag, scm); | |
199 | } | |
200 | ||
201 | /* (frame? object) -> boolean */ | |
202 | ||
203 | static SCM | |
204 | gdbscm_frame_p (SCM scm) | |
205 | { | |
206 | return scm_from_bool (frscm_is_frame (scm)); | |
207 | } | |
208 | ||
209 | /* Create a new <gdb:frame> object that encapsulates FRAME. | |
210 | Returns a <gdb:exception> object if there is an error. */ | |
211 | ||
212 | static SCM | |
213 | frscm_scm_from_frame (struct frame_info *frame, struct inferior *inferior) | |
214 | { | |
215 | frame_smob *f_smob, f_smob_for_lookup; | |
216 | SCM f_scm; | |
217 | htab_t htab; | |
218 | eqable_gdb_smob **slot; | |
ed3ef339 DE |
219 | struct frame_id frame_id = null_frame_id; |
220 | struct gdbarch *gdbarch = NULL; | |
221 | int frame_id_is_next = 0; | |
222 | ||
223 | /* If we've already created a gsmob for this frame, return it. | |
224 | This makes frames eq?-able. */ | |
225 | htab = frscm_inferior_frame_map (inferior); | |
226 | f_smob_for_lookup.frame_id = get_frame_id (frame); | |
227 | f_smob_for_lookup.inferior = inferior; | |
228 | slot = gdbscm_find_eqable_gsmob_ptr_slot (htab, &f_smob_for_lookup.base); | |
229 | if (*slot != NULL) | |
230 | return (*slot)->containing_scm; | |
231 | ||
492d29ea | 232 | TRY |
ed3ef339 DE |
233 | { |
234 | /* Try to get the previous frame, to determine if this is the last frame | |
235 | in a corrupt stack. If so, we need to store the frame_id of the next | |
236 | frame and not of this one (which is possibly invalid). */ | |
237 | if (get_prev_frame (frame) == NULL | |
238 | && get_frame_unwind_stop_reason (frame) != UNWIND_NO_REASON | |
239 | && get_next_frame (frame) != NULL) | |
240 | { | |
241 | frame_id = get_frame_id (get_next_frame (frame)); | |
242 | frame_id_is_next = 1; | |
243 | } | |
244 | else | |
245 | { | |
246 | frame_id = get_frame_id (frame); | |
247 | frame_id_is_next = 0; | |
248 | } | |
249 | gdbarch = get_frame_arch (frame); | |
250 | } | |
492d29ea PA |
251 | CATCH (except, RETURN_MASK_ALL) |
252 | { | |
253 | return gdbscm_scm_from_gdb_exception (except); | |
254 | } | |
255 | END_CATCH | |
ed3ef339 DE |
256 | |
257 | f_scm = frscm_make_frame_smob (); | |
258 | f_smob = (frame_smob *) SCM_SMOB_DATA (f_scm); | |
259 | f_smob->frame_id = frame_id; | |
260 | f_smob->gdbarch = gdbarch; | |
261 | f_smob->inferior = inferior; | |
262 | f_smob->frame_id_is_next = frame_id_is_next; | |
263 | ||
1254eefc | 264 | gdbscm_fill_eqable_gsmob_ptr_slot (slot, &f_smob->base); |
ed3ef339 DE |
265 | |
266 | return f_scm; | |
267 | } | |
268 | ||
269 | /* Create a new <gdb:frame> object that encapsulates FRAME. | |
270 | A Scheme exception is thrown if there is an error. */ | |
271 | ||
272 | static SCM | |
273 | frscm_scm_from_frame_unsafe (struct frame_info *frame, | |
274 | struct inferior *inferior) | |
275 | { | |
276 | SCM f_scm = frscm_scm_from_frame (frame, inferior); | |
277 | ||
278 | if (gdbscm_is_exception (f_scm)) | |
279 | gdbscm_throw (f_scm); | |
280 | ||
281 | return f_scm; | |
282 | } | |
283 | ||
284 | /* Returns the <gdb:frame> object in SELF. | |
285 | Throws an exception if SELF is not a <gdb:frame> object. */ | |
286 | ||
287 | static SCM | |
288 | frscm_get_frame_arg_unsafe (SCM self, int arg_pos, const char *func_name) | |
289 | { | |
290 | SCM_ASSERT_TYPE (frscm_is_frame (self), self, arg_pos, func_name, | |
291 | frame_smob_name); | |
292 | ||
293 | return self; | |
294 | } | |
295 | ||
296 | /* There is no gdbscm_scm_to_frame function because translating | |
297 | a frame SCM object to a struct frame_info * can throw a GDB error. | |
298 | Thus code working with frames has to handle both Scheme errors (e.g., the | |
299 | object is not a frame) and GDB errors (e.g., the frame lookup failed). | |
300 | ||
e9fbd043 DE |
301 | To help keep things clear we split what would be gdbscm_scm_to_frame |
302 | into two: | |
ed3ef339 | 303 | |
e9fbd043 | 304 | frscm_get_frame_smob_arg_unsafe |
ed3ef339 DE |
305 | - throws a Scheme error if object is not a frame, |
306 | or if the inferior is gone or is no longer current | |
307 | ||
e9fbd043 | 308 | frscm_frame_smob_to_frame |
ed3ef339 DE |
309 | - may throw a gdb error if the conversion fails |
310 | - it's not clear when it will and won't throw a GDB error, | |
311 | but for robustness' sake we assume that whenever we call out to GDB | |
312 | a GDB error may get thrown (and thus the call must be wrapped in a | |
313 | TRY_CATCH) */ | |
314 | ||
315 | /* Returns the frame_smob for the object wrapped by FRAME_SCM. | |
316 | A Scheme error is thrown if FRAME_SCM is not a frame. */ | |
317 | ||
318 | frame_smob * | |
319 | frscm_get_frame_smob_arg_unsafe (SCM self, int arg_pos, const char *func_name) | |
320 | { | |
321 | SCM f_scm = frscm_get_frame_arg_unsafe (self, arg_pos, func_name); | |
322 | frame_smob *f_smob = (frame_smob *) SCM_SMOB_DATA (f_scm); | |
323 | ||
324 | if (f_smob->inferior == NULL) | |
325 | { | |
326 | gdbscm_invalid_object_error (func_name, arg_pos, self, | |
327 | _("inferior")); | |
328 | } | |
329 | if (f_smob->inferior != current_inferior ()) | |
330 | scm_misc_error (func_name, _("inferior has changed"), SCM_EOL); | |
331 | ||
332 | return f_smob; | |
333 | } | |
334 | ||
335 | /* Returns the frame_info object wrapped by F_SMOB. | |
336 | If the frame doesn't exist anymore (the frame id doesn't | |
337 | correspond to any frame in the inferior), returns NULL. | |
338 | This function calls GDB routines, so don't assume a GDB error will | |
339 | not be thrown. */ | |
340 | ||
341 | struct frame_info * | |
342 | frscm_frame_smob_to_frame (frame_smob *f_smob) | |
343 | { | |
344 | struct frame_info *frame; | |
345 | ||
346 | frame = frame_find_by_id (f_smob->frame_id); | |
347 | if (frame == NULL) | |
348 | return NULL; | |
349 | ||
350 | if (f_smob->frame_id_is_next) | |
351 | frame = get_prev_frame (frame); | |
352 | ||
353 | return frame; | |
354 | } | |
355 | ||
356 | /* Helper function for frscm_del_inferior_frames to mark the frame | |
357 | as invalid. */ | |
358 | ||
359 | static int | |
360 | frscm_mark_frame_invalid (void **slot, void *info) | |
361 | { | |
362 | frame_smob *f_smob = (frame_smob *) *slot; | |
363 | ||
364 | f_smob->inferior = NULL; | |
365 | return 1; | |
366 | } | |
367 | ||
368 | /* This function is called when an inferior is about to be freed. | |
369 | Invalidate the frame as further actions on the frame could result | |
370 | in bad data. All access to the frame should be gated by | |
371 | frscm_get_frame_smob_arg_unsafe which will raise an exception on | |
372 | invalid frames. */ | |
373 | ||
374 | static void | |
375 | frscm_del_inferior_frames (struct inferior *inferior, void *datum) | |
376 | { | |
9a3c8263 | 377 | htab_t htab = (htab_t) datum; |
ed3ef339 DE |
378 | |
379 | if (htab != NULL) | |
380 | { | |
381 | htab_traverse_noresize (htab, frscm_mark_frame_invalid, NULL); | |
382 | htab_delete (htab); | |
383 | } | |
384 | } | |
385 | \f | |
386 | /* Frame methods. */ | |
387 | ||
388 | /* (frame-valid? <gdb:frame>) -> bool | |
389 | Returns #t if the frame corresponding to the frame_id of this | |
390 | object still exists in the inferior. */ | |
391 | ||
392 | static SCM | |
393 | gdbscm_frame_valid_p (SCM self) | |
394 | { | |
395 | frame_smob *f_smob; | |
396 | struct frame_info *frame = NULL; | |
ed3ef339 DE |
397 | |
398 | f_smob = frscm_get_frame_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
399 | ||
492d29ea | 400 | TRY |
ed3ef339 DE |
401 | { |
402 | frame = frscm_frame_smob_to_frame (f_smob); | |
403 | } | |
492d29ea PA |
404 | CATCH (except, RETURN_MASK_ALL) |
405 | { | |
406 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
407 | } | |
408 | END_CATCH | |
ed3ef339 DE |
409 | |
410 | return scm_from_bool (frame != NULL); | |
411 | } | |
412 | ||
413 | /* (frame-name <gdb:frame>) -> string | |
414 | Returns the name of the function corresponding to this frame, | |
415 | or #f if there is no function. */ | |
416 | ||
417 | static SCM | |
418 | gdbscm_frame_name (SCM self) | |
419 | { | |
420 | frame_smob *f_smob; | |
c6dc63a1 | 421 | gdb::unique_xmalloc_ptr<char> name; |
ed3ef339 DE |
422 | enum language lang = language_minimal; |
423 | struct frame_info *frame = NULL; | |
424 | SCM result; | |
ed3ef339 DE |
425 | |
426 | f_smob = frscm_get_frame_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
427 | ||
492d29ea | 428 | TRY |
ed3ef339 DE |
429 | { |
430 | frame = frscm_frame_smob_to_frame (f_smob); | |
431 | if (frame != NULL) | |
c6dc63a1 | 432 | name = find_frame_funname (frame, &lang, NULL); |
ed3ef339 | 433 | } |
6c63c96a | 434 | CATCH (except, RETURN_MASK_ALL) |
492d29ea | 435 | { |
6c63c96a | 436 | GDBSCM_HANDLE_GDB_EXCEPTION (except); |
492d29ea PA |
437 | } |
438 | END_CATCH | |
439 | ||
ed3ef339 DE |
440 | if (frame == NULL) |
441 | { | |
442 | gdbscm_invalid_object_error (FUNC_NAME, SCM_ARG1, self, | |
443 | _("<gdb:frame>")); | |
444 | } | |
445 | ||
446 | if (name != NULL) | |
c6dc63a1 | 447 | result = gdbscm_scm_from_c_string (name.get ()); |
ed3ef339 DE |
448 | else |
449 | result = SCM_BOOL_F; | |
450 | ||
451 | return result; | |
452 | } | |
453 | ||
454 | /* (frame-type <gdb:frame>) -> integer | |
455 | Returns the frame type, namely one of the gdb:*_FRAME constants. */ | |
456 | ||
457 | static SCM | |
458 | gdbscm_frame_type (SCM self) | |
459 | { | |
460 | frame_smob *f_smob; | |
461 | enum frame_type type = NORMAL_FRAME; | |
462 | struct frame_info *frame = NULL; | |
ed3ef339 DE |
463 | |
464 | f_smob = frscm_get_frame_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
465 | ||
492d29ea | 466 | TRY |
ed3ef339 DE |
467 | { |
468 | frame = frscm_frame_smob_to_frame (f_smob); | |
469 | if (frame != NULL) | |
470 | type = get_frame_type (frame); | |
471 | } | |
492d29ea PA |
472 | CATCH (except, RETURN_MASK_ALL) |
473 | { | |
474 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
475 | } | |
476 | END_CATCH | |
ed3ef339 DE |
477 | |
478 | if (frame == NULL) | |
479 | { | |
480 | gdbscm_invalid_object_error (FUNC_NAME, SCM_ARG1, self, | |
481 | _("<gdb:frame>")); | |
482 | } | |
483 | ||
484 | return scm_from_int (type); | |
485 | } | |
486 | ||
487 | /* (frame-arch <gdb:frame>) -> <gdb:architecture> | |
488 | Returns the frame's architecture as a gdb:architecture object. */ | |
489 | ||
490 | static SCM | |
491 | gdbscm_frame_arch (SCM self) | |
492 | { | |
493 | frame_smob *f_smob; | |
494 | struct frame_info *frame = NULL; | |
ed3ef339 DE |
495 | |
496 | f_smob = frscm_get_frame_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
497 | ||
492d29ea | 498 | TRY |
ed3ef339 DE |
499 | { |
500 | frame = frscm_frame_smob_to_frame (f_smob); | |
501 | } | |
492d29ea PA |
502 | CATCH (except, RETURN_MASK_ALL) |
503 | { | |
504 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
505 | } | |
506 | END_CATCH | |
ed3ef339 DE |
507 | |
508 | if (frame == NULL) | |
509 | { | |
510 | gdbscm_invalid_object_error (FUNC_NAME, SCM_ARG1, self, | |
511 | _("<gdb:frame>")); | |
512 | } | |
513 | ||
514 | return arscm_scm_from_arch (f_smob->gdbarch); | |
515 | } | |
516 | ||
517 | /* (frame-unwind-stop-reason <gdb:frame>) -> integer | |
518 | Returns one of the gdb:FRAME_UNWIND_* constants. */ | |
519 | ||
520 | static SCM | |
521 | gdbscm_frame_unwind_stop_reason (SCM self) | |
522 | { | |
523 | frame_smob *f_smob; | |
524 | struct frame_info *frame = NULL; | |
ed3ef339 DE |
525 | enum unwind_stop_reason stop_reason; |
526 | ||
527 | f_smob = frscm_get_frame_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
528 | ||
492d29ea | 529 | TRY |
ed3ef339 DE |
530 | { |
531 | frame = frscm_frame_smob_to_frame (f_smob); | |
532 | } | |
492d29ea PA |
533 | CATCH (except, RETURN_MASK_ALL) |
534 | { | |
535 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
536 | } | |
537 | END_CATCH | |
ed3ef339 DE |
538 | |
539 | if (frame == NULL) | |
540 | { | |
541 | gdbscm_invalid_object_error (FUNC_NAME, SCM_ARG1, self, | |
542 | _("<gdb:frame>")); | |
543 | } | |
544 | ||
545 | stop_reason = get_frame_unwind_stop_reason (frame); | |
546 | ||
547 | return scm_from_int (stop_reason); | |
548 | } | |
549 | ||
550 | /* (frame-pc <gdb:frame>) -> integer | |
551 | Returns the frame's resume address. */ | |
552 | ||
553 | static SCM | |
554 | gdbscm_frame_pc (SCM self) | |
555 | { | |
556 | frame_smob *f_smob; | |
557 | CORE_ADDR pc = 0; | |
558 | struct frame_info *frame = NULL; | |
ed3ef339 DE |
559 | |
560 | f_smob = frscm_get_frame_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
561 | ||
492d29ea | 562 | TRY |
ed3ef339 DE |
563 | { |
564 | frame = frscm_frame_smob_to_frame (f_smob); | |
565 | if (frame != NULL) | |
566 | pc = get_frame_pc (frame); | |
567 | } | |
492d29ea PA |
568 | CATCH (except, RETURN_MASK_ALL) |
569 | { | |
570 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
571 | } | |
572 | END_CATCH | |
ed3ef339 DE |
573 | |
574 | if (frame == NULL) | |
575 | { | |
576 | gdbscm_invalid_object_error (FUNC_NAME, SCM_ARG1, self, | |
577 | _("<gdb:frame>")); | |
578 | } | |
579 | ||
580 | return gdbscm_scm_from_ulongest (pc); | |
581 | } | |
582 | ||
583 | /* (frame-block <gdb:frame>) -> <gdb:block> | |
584 | Returns the frame's code block, or #f if one cannot be found. */ | |
585 | ||
586 | static SCM | |
587 | gdbscm_frame_block (SCM self) | |
588 | { | |
589 | frame_smob *f_smob; | |
3977b71f | 590 | const struct block *block = NULL, *fn_block; |
ed3ef339 | 591 | struct frame_info *frame = NULL; |
ed3ef339 DE |
592 | |
593 | f_smob = frscm_get_frame_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
594 | ||
492d29ea | 595 | TRY |
ed3ef339 DE |
596 | { |
597 | frame = frscm_frame_smob_to_frame (f_smob); | |
598 | if (frame != NULL) | |
599 | block = get_frame_block (frame, NULL); | |
600 | } | |
492d29ea PA |
601 | CATCH (except, RETURN_MASK_ALL) |
602 | { | |
603 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
604 | } | |
605 | END_CATCH | |
ed3ef339 DE |
606 | |
607 | if (frame == NULL) | |
608 | { | |
609 | gdbscm_invalid_object_error (FUNC_NAME, SCM_ARG1, self, | |
610 | _("<gdb:frame>")); | |
611 | } | |
612 | ||
613 | for (fn_block = block; | |
614 | fn_block != NULL && BLOCK_FUNCTION (fn_block) == NULL; | |
615 | fn_block = BLOCK_SUPERBLOCK (fn_block)) | |
616 | continue; | |
617 | ||
618 | if (block == NULL || fn_block == NULL || BLOCK_FUNCTION (fn_block) == NULL) | |
619 | { | |
620 | scm_misc_error (FUNC_NAME, _("cannot find block for frame"), | |
621 | scm_list_1 (self)); | |
622 | } | |
623 | ||
624 | if (block != NULL) | |
625 | { | |
08be3fe3 DE |
626 | return bkscm_scm_from_block |
627 | (block, symbol_objfile (BLOCK_FUNCTION (fn_block))); | |
ed3ef339 DE |
628 | } |
629 | ||
630 | return SCM_BOOL_F; | |
631 | } | |
632 | ||
633 | /* (frame-function <gdb:frame>) -> <gdb:symbol> | |
634 | Returns the symbol for the function corresponding to this frame, | |
635 | or #f if there isn't one. */ | |
636 | ||
637 | static SCM | |
638 | gdbscm_frame_function (SCM self) | |
639 | { | |
640 | frame_smob *f_smob; | |
641 | struct symbol *sym = NULL; | |
642 | struct frame_info *frame = NULL; | |
ed3ef339 DE |
643 | |
644 | f_smob = frscm_get_frame_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
645 | ||
492d29ea | 646 | TRY |
ed3ef339 DE |
647 | { |
648 | frame = frscm_frame_smob_to_frame (f_smob); | |
649 | if (frame != NULL) | |
650 | sym = find_pc_function (get_frame_address_in_block (frame)); | |
651 | } | |
492d29ea PA |
652 | CATCH (except, RETURN_MASK_ALL) |
653 | { | |
654 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
655 | } | |
656 | END_CATCH | |
ed3ef339 DE |
657 | |
658 | if (frame == NULL) | |
659 | { | |
660 | gdbscm_invalid_object_error (FUNC_NAME, SCM_ARG1, self, | |
661 | _("<gdb:frame>")); | |
662 | } | |
663 | ||
664 | if (sym != NULL) | |
665 | return syscm_scm_from_symbol (sym); | |
666 | ||
667 | return SCM_BOOL_F; | |
668 | } | |
669 | ||
670 | /* (frame-older <gdb:frame>) -> <gdb:frame> | |
671 | Returns the frame immediately older (outer) to this frame, | |
672 | or #f if there isn't one. */ | |
673 | ||
674 | static SCM | |
675 | gdbscm_frame_older (SCM self) | |
676 | { | |
677 | frame_smob *f_smob; | |
678 | struct frame_info *prev = NULL; | |
679 | struct frame_info *frame = NULL; | |
ed3ef339 DE |
680 | |
681 | f_smob = frscm_get_frame_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
682 | ||
492d29ea | 683 | TRY |
ed3ef339 DE |
684 | { |
685 | frame = frscm_frame_smob_to_frame (f_smob); | |
686 | if (frame != NULL) | |
687 | prev = get_prev_frame (frame); | |
688 | } | |
492d29ea PA |
689 | CATCH (except, RETURN_MASK_ALL) |
690 | { | |
691 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
692 | } | |
693 | END_CATCH | |
ed3ef339 DE |
694 | |
695 | if (frame == NULL) | |
696 | { | |
697 | gdbscm_invalid_object_error (FUNC_NAME, SCM_ARG1, self, | |
698 | _("<gdb:frame>")); | |
699 | } | |
700 | ||
701 | if (prev != NULL) | |
702 | return frscm_scm_from_frame_unsafe (prev, f_smob->inferior); | |
703 | ||
704 | return SCM_BOOL_F; | |
705 | } | |
706 | ||
707 | /* (frame-newer <gdb:frame>) -> <gdb:frame> | |
708 | Returns the frame immediately newer (inner) to this frame, | |
709 | or #f if there isn't one. */ | |
710 | ||
711 | static SCM | |
712 | gdbscm_frame_newer (SCM self) | |
713 | { | |
714 | frame_smob *f_smob; | |
715 | struct frame_info *next = NULL; | |
716 | struct frame_info *frame = NULL; | |
ed3ef339 DE |
717 | |
718 | f_smob = frscm_get_frame_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
719 | ||
492d29ea | 720 | TRY |
ed3ef339 DE |
721 | { |
722 | frame = frscm_frame_smob_to_frame (f_smob); | |
723 | if (frame != NULL) | |
724 | next = get_next_frame (frame); | |
725 | } | |
492d29ea PA |
726 | CATCH (except, RETURN_MASK_ALL) |
727 | { | |
728 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
729 | } | |
730 | END_CATCH | |
ed3ef339 DE |
731 | |
732 | if (frame == NULL) | |
733 | { | |
734 | gdbscm_invalid_object_error (FUNC_NAME, SCM_ARG1, self, | |
735 | _("<gdb:frame>")); | |
736 | } | |
737 | ||
738 | if (next != NULL) | |
739 | return frscm_scm_from_frame_unsafe (next, f_smob->inferior); | |
740 | ||
741 | return SCM_BOOL_F; | |
742 | } | |
743 | ||
744 | /* (frame-sal <gdb:frame>) -> <gdb:sal> | |
745 | Returns the frame's symtab and line. */ | |
746 | ||
747 | static SCM | |
748 | gdbscm_frame_sal (SCM self) | |
749 | { | |
750 | frame_smob *f_smob; | |
751 | struct symtab_and_line sal; | |
752 | struct frame_info *frame = NULL; | |
ed3ef339 DE |
753 | |
754 | f_smob = frscm_get_frame_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
755 | ||
492d29ea | 756 | TRY |
ed3ef339 DE |
757 | { |
758 | frame = frscm_frame_smob_to_frame (f_smob); | |
759 | if (frame != NULL) | |
51abb421 | 760 | sal = find_frame_sal (frame); |
ed3ef339 | 761 | } |
492d29ea PA |
762 | CATCH (except, RETURN_MASK_ALL) |
763 | { | |
764 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
765 | } | |
766 | END_CATCH | |
ed3ef339 DE |
767 | |
768 | if (frame == NULL) | |
769 | { | |
770 | gdbscm_invalid_object_error (FUNC_NAME, SCM_ARG1, self, | |
771 | _("<gdb:frame>")); | |
772 | } | |
773 | ||
774 | return stscm_scm_from_sal (sal); | |
775 | } | |
776 | ||
f2983cc3 AW |
777 | /* (frame-read-register <gdb:frame> string) -> <gdb:value> |
778 | The register argument must be a string. */ | |
779 | ||
780 | static SCM | |
781 | gdbscm_frame_read_register (SCM self, SCM register_scm) | |
782 | { | |
783 | char *register_str; | |
784 | struct value *value = NULL; | |
785 | struct frame_info *frame = NULL; | |
f2983cc3 AW |
786 | frame_smob *f_smob; |
787 | ||
788 | f_smob = frscm_get_frame_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
789 | gdbscm_parse_function_args (FUNC_NAME, SCM_ARG2, NULL, "s", | |
790 | register_scm, ®ister_str); | |
557e56be PA |
791 | |
792 | struct gdb_exception except = exception_none; | |
f2983cc3 AW |
793 | |
794 | TRY | |
795 | { | |
796 | int regnum; | |
797 | ||
798 | frame = frscm_frame_smob_to_frame (f_smob); | |
799 | if (frame) | |
800 | { | |
801 | regnum = user_reg_map_name_to_regnum (get_frame_arch (frame), | |
802 | register_str, | |
803 | strlen (register_str)); | |
804 | if (regnum >= 0) | |
805 | value = value_of_register (regnum, frame); | |
806 | } | |
807 | } | |
557e56be | 808 | CATCH (ex, RETURN_MASK_ALL) |
f2983cc3 | 809 | { |
557e56be | 810 | except = ex; |
f2983cc3 AW |
811 | } |
812 | END_CATCH | |
813 | ||
557e56be PA |
814 | xfree (register_str); |
815 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
f2983cc3 AW |
816 | |
817 | if (frame == NULL) | |
818 | { | |
819 | gdbscm_invalid_object_error (FUNC_NAME, SCM_ARG1, self, | |
820 | _("<gdb:frame>")); | |
821 | } | |
822 | ||
823 | if (value == NULL) | |
824 | { | |
825 | gdbscm_out_of_range_error (FUNC_NAME, SCM_ARG2, register_scm, | |
826 | _("unknown register")); | |
827 | } | |
828 | ||
829 | return vlscm_scm_from_value (value); | |
830 | } | |
831 | ||
ed3ef339 DE |
832 | /* (frame-read-var <gdb:frame> <gdb:symbol>) -> <gdb:value> |
833 | (frame-read-var <gdb:frame> string [#:block <gdb:block>]) -> <gdb:value> | |
834 | If the optional block argument is provided start the search from that block, | |
835 | otherwise search from the frame's current block (determined by examining | |
836 | the resume address of the frame). The variable argument must be a string | |
837 | or an instance of a <gdb:symbol>. The block argument must be an instance of | |
838 | <gdb:block>. */ | |
839 | ||
840 | static SCM | |
841 | gdbscm_frame_read_var (SCM self, SCM symbol_scm, SCM rest) | |
842 | { | |
843 | SCM keywords[] = { block_keyword, SCM_BOOL_F }; | |
ed3ef339 DE |
844 | frame_smob *f_smob; |
845 | int block_arg_pos = -1; | |
846 | SCM block_scm = SCM_UNDEFINED; | |
847 | struct frame_info *frame = NULL; | |
848 | struct symbol *var = NULL; | |
63e43d3a | 849 | const struct block *block = NULL; |
ed3ef339 | 850 | struct value *value = NULL; |
ed3ef339 DE |
851 | |
852 | f_smob = frscm_get_frame_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
853 | ||
492d29ea | 854 | TRY |
ed3ef339 DE |
855 | { |
856 | frame = frscm_frame_smob_to_frame (f_smob); | |
857 | } | |
492d29ea PA |
858 | CATCH (except, RETURN_MASK_ALL) |
859 | { | |
860 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
861 | } | |
862 | END_CATCH | |
ed3ef339 DE |
863 | |
864 | if (frame == NULL) | |
865 | { | |
866 | gdbscm_invalid_object_error (FUNC_NAME, SCM_ARG1, self, | |
867 | _("<gdb:frame>")); | |
868 | } | |
869 | ||
870 | gdbscm_parse_function_args (FUNC_NAME, SCM_ARG3, keywords, "#O", | |
871 | rest, &block_arg_pos, &block_scm); | |
872 | ||
873 | if (syscm_is_symbol (symbol_scm)) | |
874 | { | |
875 | var = syscm_get_valid_symbol_arg_unsafe (symbol_scm, SCM_ARG2, | |
876 | FUNC_NAME); | |
877 | SCM_ASSERT (SCM_UNBNDP (block_scm), block_scm, SCM_ARG3, FUNC_NAME); | |
878 | } | |
879 | else if (scm_is_string (symbol_scm)) | |
880 | { | |
492d29ea | 881 | struct gdb_exception except = exception_none; |
ed3ef339 DE |
882 | |
883 | if (! SCM_UNBNDP (block_scm)) | |
884 | { | |
885 | SCM except_scm; | |
886 | ||
887 | gdb_assert (block_arg_pos > 0); | |
888 | block = bkscm_scm_to_block (block_scm, block_arg_pos, FUNC_NAME, | |
889 | &except_scm); | |
890 | if (block == NULL) | |
891 | gdbscm_throw (except_scm); | |
892 | } | |
893 | ||
a95c7dab TT |
894 | { |
895 | gdb::unique_xmalloc_ptr<char> var_name | |
896 | (gdbscm_scm_to_c_string (symbol_scm)); | |
897 | /* N.B. Between here and the end of the scope, don't do anything | |
898 | to cause a Scheme exception. */ | |
899 | ||
900 | TRY | |
901 | { | |
902 | struct block_symbol lookup_sym; | |
903 | ||
904 | if (block == NULL) | |
905 | block = get_frame_block (frame, NULL); | |
906 | lookup_sym = lookup_symbol (var_name.get (), block, VAR_DOMAIN, | |
907 | NULL); | |
908 | var = lookup_sym.symbol; | |
909 | block = lookup_sym.block; | |
910 | } | |
911 | CATCH (ex, RETURN_MASK_ALL) | |
912 | { | |
913 | except = ex; | |
914 | } | |
915 | END_CATCH | |
916 | } | |
ed3ef339 | 917 | |
ed3ef339 DE |
918 | GDBSCM_HANDLE_GDB_EXCEPTION (except); |
919 | ||
920 | if (var == NULL) | |
a95c7dab TT |
921 | gdbscm_out_of_range_error (FUNC_NAME, 0, symbol_scm, |
922 | _("variable not found")); | |
ed3ef339 DE |
923 | } |
924 | else | |
925 | { | |
926 | /* Use SCM_ASSERT_TYPE for more consistent error messages. */ | |
927 | SCM_ASSERT_TYPE (0, symbol_scm, SCM_ARG1, FUNC_NAME, | |
928 | _("gdb:symbol or string")); | |
929 | } | |
930 | ||
492d29ea | 931 | TRY |
ed3ef339 | 932 | { |
63e43d3a | 933 | value = read_var_value (var, block, frame); |
ed3ef339 | 934 | } |
492d29ea PA |
935 | CATCH (except, RETURN_MASK_ALL) |
936 | { | |
937 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
938 | } | |
939 | END_CATCH | |
ed3ef339 DE |
940 | |
941 | return vlscm_scm_from_value (value); | |
942 | } | |
943 | ||
944 | /* (frame-select <gdb:frame>) -> unspecified | |
945 | Select this frame. */ | |
946 | ||
947 | static SCM | |
948 | gdbscm_frame_select (SCM self) | |
949 | { | |
950 | frame_smob *f_smob; | |
951 | struct frame_info *frame = NULL; | |
ed3ef339 DE |
952 | |
953 | f_smob = frscm_get_frame_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
954 | ||
492d29ea | 955 | TRY |
ed3ef339 DE |
956 | { |
957 | frame = frscm_frame_smob_to_frame (f_smob); | |
958 | if (frame != NULL) | |
959 | select_frame (frame); | |
960 | } | |
492d29ea PA |
961 | CATCH (except, RETURN_MASK_ALL) |
962 | { | |
963 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
964 | } | |
965 | END_CATCH | |
ed3ef339 DE |
966 | |
967 | if (frame == NULL) | |
968 | { | |
969 | gdbscm_invalid_object_error (FUNC_NAME, SCM_ARG1, self, | |
970 | _("<gdb:frame>")); | |
971 | } | |
972 | ||
973 | return SCM_UNSPECIFIED; | |
974 | } | |
975 | ||
976 | /* (newest-frame) -> <gdb:frame> | |
977 | Returns the newest frame. */ | |
978 | ||
979 | static SCM | |
980 | gdbscm_newest_frame (void) | |
981 | { | |
982 | struct frame_info *frame = NULL; | |
ed3ef339 | 983 | |
492d29ea | 984 | TRY |
ed3ef339 DE |
985 | { |
986 | frame = get_current_frame (); | |
987 | } | |
492d29ea PA |
988 | CATCH (except, RETURN_MASK_ALL) |
989 | { | |
990 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
991 | } | |
992 | END_CATCH | |
ed3ef339 DE |
993 | |
994 | return frscm_scm_from_frame_unsafe (frame, current_inferior ()); | |
995 | } | |
996 | ||
997 | /* (selected-frame) -> <gdb:frame> | |
998 | Returns the selected frame. */ | |
999 | ||
1000 | static SCM | |
1001 | gdbscm_selected_frame (void) | |
1002 | { | |
1003 | struct frame_info *frame = NULL; | |
ed3ef339 | 1004 | |
492d29ea | 1005 | TRY |
ed3ef339 DE |
1006 | { |
1007 | frame = get_selected_frame (_("No frame is currently selected")); | |
1008 | } | |
492d29ea PA |
1009 | CATCH (except, RETURN_MASK_ALL) |
1010 | { | |
1011 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
1012 | } | |
1013 | END_CATCH | |
ed3ef339 DE |
1014 | |
1015 | return frscm_scm_from_frame_unsafe (frame, current_inferior ()); | |
1016 | } | |
1017 | ||
1018 | /* (unwind-stop-reason-string integer) -> string | |
1019 | Return a string explaining the unwind stop reason. */ | |
1020 | ||
1021 | static SCM | |
1022 | gdbscm_unwind_stop_reason_string (SCM reason_scm) | |
1023 | { | |
1024 | int reason; | |
1025 | const char *str; | |
1026 | ||
1027 | gdbscm_parse_function_args (FUNC_NAME, SCM_ARG1, NULL, "i", | |
1028 | reason_scm, &reason); | |
1029 | ||
1030 | if (reason < UNWIND_FIRST || reason > UNWIND_LAST) | |
1031 | scm_out_of_range (FUNC_NAME, reason_scm); | |
1032 | ||
fa4c39cb | 1033 | str = unwind_stop_reason_to_string ((enum unwind_stop_reason) reason); |
ed3ef339 DE |
1034 | return gdbscm_scm_from_c_string (str); |
1035 | } | |
1036 | \f | |
1037 | /* Initialize the Scheme frame support. */ | |
1038 | ||
1039 | static const scheme_integer_constant frame_integer_constants[] = | |
1040 | { | |
1041 | #define ENTRY(X) { #X, X } | |
1042 | ||
1043 | ENTRY (NORMAL_FRAME), | |
1044 | ENTRY (DUMMY_FRAME), | |
1045 | ENTRY (INLINE_FRAME), | |
1046 | ENTRY (TAILCALL_FRAME), | |
1047 | ENTRY (SIGTRAMP_FRAME), | |
1048 | ENTRY (ARCH_FRAME), | |
1049 | ENTRY (SENTINEL_FRAME), | |
1050 | ||
1051 | #undef ENTRY | |
1052 | ||
1053 | #define SET(name, description) \ | |
1054 | { "FRAME_" #name, name }, | |
1055 | #include "unwind_stop_reasons.def" | |
1056 | #undef SET | |
1057 | ||
1058 | END_INTEGER_CONSTANTS | |
1059 | }; | |
1060 | ||
1061 | static const scheme_function frame_functions[] = | |
1062 | { | |
72e02483 | 1063 | { "frame?", 1, 0, 0, as_a_scm_t_subr (gdbscm_frame_p), |
ed3ef339 DE |
1064 | "\ |
1065 | Return #t if the object is a <gdb:frame> object." }, | |
1066 | ||
72e02483 | 1067 | { "frame-valid?", 1, 0, 0, as_a_scm_t_subr (gdbscm_frame_valid_p), |
ed3ef339 DE |
1068 | "\ |
1069 | Return #t if the object is a valid <gdb:frame> object.\n\ | |
1070 | Frames become invalid when the inferior returns to its caller." }, | |
1071 | ||
72e02483 | 1072 | { "frame-name", 1, 0, 0, as_a_scm_t_subr (gdbscm_frame_name), |
ed3ef339 DE |
1073 | "\ |
1074 | Return the name of the function corresponding to this frame,\n\ | |
1075 | or #f if there is no function." }, | |
1076 | ||
72e02483 | 1077 | { "frame-arch", 1, 0, 0, as_a_scm_t_subr (gdbscm_frame_arch), |
ed3ef339 DE |
1078 | "\ |
1079 | Return the frame's architecture as a <gdb:arch> object." }, | |
1080 | ||
72e02483 | 1081 | { "frame-type", 1, 0, 0, as_a_scm_t_subr (gdbscm_frame_type), |
ed3ef339 DE |
1082 | "\ |
1083 | Return the frame type, namely one of the gdb:*_FRAME constants." }, | |
1084 | ||
72e02483 PA |
1085 | { "frame-unwind-stop-reason", 1, 0, 0, |
1086 | as_a_scm_t_subr (gdbscm_frame_unwind_stop_reason), | |
ed3ef339 DE |
1087 | "\ |
1088 | Return one of the gdb:FRAME_UNWIND_* constants explaining why\n\ | |
1089 | it's not possible to find frames older than this." }, | |
1090 | ||
72e02483 | 1091 | { "frame-pc", 1, 0, 0, as_a_scm_t_subr (gdbscm_frame_pc), |
ed3ef339 DE |
1092 | "\ |
1093 | Return the frame's resume address." }, | |
1094 | ||
72e02483 | 1095 | { "frame-block", 1, 0, 0, as_a_scm_t_subr (gdbscm_frame_block), |
ed3ef339 DE |
1096 | "\ |
1097 | Return the frame's code block, or #f if one cannot be found." }, | |
1098 | ||
72e02483 | 1099 | { "frame-function", 1, 0, 0, as_a_scm_t_subr (gdbscm_frame_function), |
ed3ef339 DE |
1100 | "\ |
1101 | Return the <gdb:symbol> for the function corresponding to this frame,\n\ | |
1102 | or #f if there isn't one." }, | |
1103 | ||
72e02483 | 1104 | { "frame-older", 1, 0, 0, as_a_scm_t_subr (gdbscm_frame_older), |
ed3ef339 DE |
1105 | "\ |
1106 | Return the frame immediately older (outer) to this frame,\n\ | |
1107 | or #f if there isn't one." }, | |
1108 | ||
72e02483 | 1109 | { "frame-newer", 1, 0, 0, as_a_scm_t_subr (gdbscm_frame_newer), |
ed3ef339 DE |
1110 | "\ |
1111 | Return the frame immediately newer (inner) to this frame,\n\ | |
1112 | or #f if there isn't one." }, | |
1113 | ||
72e02483 | 1114 | { "frame-sal", 1, 0, 0, as_a_scm_t_subr (gdbscm_frame_sal), |
ed3ef339 DE |
1115 | "\ |
1116 | Return the frame's symtab-and-line <gdb:sal> object." }, | |
1117 | ||
72e02483 | 1118 | { "frame-read-var", 2, 0, 1, as_a_scm_t_subr (gdbscm_frame_read_var), |
ed3ef339 DE |
1119 | "\ |
1120 | Return the value of the symbol in the frame.\n\ | |
1121 | \n\ | |
1122 | Arguments: <gdb:frame> <gdb:symbol>\n\ | |
1123 | Or: <gdb:frame> string [#:block <gdb:block>]" }, | |
1124 | ||
72e02483 PA |
1125 | { "frame-read-register", 2, 0, 0, |
1126 | as_a_scm_t_subr (gdbscm_frame_read_register), | |
f2983cc3 AW |
1127 | "\ |
1128 | Return the value of the register in the frame.\n\ | |
1129 | \n\ | |
1130 | Arguments: <gdb:frame> string" }, | |
1131 | ||
72e02483 | 1132 | { "frame-select", 1, 0, 0, as_a_scm_t_subr (gdbscm_frame_select), |
ed3ef339 DE |
1133 | "\ |
1134 | Select this frame." }, | |
1135 | ||
72e02483 | 1136 | { "newest-frame", 0, 0, 0, as_a_scm_t_subr (gdbscm_newest_frame), |
ed3ef339 DE |
1137 | "\ |
1138 | Return the newest frame." }, | |
1139 | ||
72e02483 | 1140 | { "selected-frame", 0, 0, 0, as_a_scm_t_subr (gdbscm_selected_frame), |
ed3ef339 DE |
1141 | "\ |
1142 | Return the selected frame." }, | |
1143 | ||
72e02483 PA |
1144 | { "unwind-stop-reason-string", 1, 0, 0, |
1145 | as_a_scm_t_subr (gdbscm_unwind_stop_reason_string), | |
ed3ef339 DE |
1146 | "\ |
1147 | Return a string explaining the unwind stop reason.\n\ | |
1148 | \n\ | |
1149 | Arguments: integer (the result of frame-unwind-stop-reason)" }, | |
1150 | ||
1151 | END_FUNCTIONS | |
1152 | }; | |
1153 | ||
1154 | void | |
1155 | gdbscm_initialize_frames (void) | |
1156 | { | |
1157 | frame_smob_tag | |
1158 | = gdbscm_make_smob_type (frame_smob_name, sizeof (frame_smob)); | |
ed3ef339 DE |
1159 | scm_set_smob_free (frame_smob_tag, frscm_free_frame_smob); |
1160 | scm_set_smob_print (frame_smob_tag, frscm_print_frame_smob); | |
1161 | ||
1162 | gdbscm_define_integer_constants (frame_integer_constants, 1); | |
1163 | gdbscm_define_functions (frame_functions, 1); | |
1164 | ||
1165 | block_keyword = scm_from_latin1_keyword ("block"); | |
1166 | ||
1167 | /* Register an inferior "free" callback so we can properly | |
1168 | invalidate frames when an inferior file is about to be deleted. */ | |
1169 | frscm_inferior_data_key | |
1170 | = register_inferior_data_with_cleanup (NULL, frscm_del_inferior_frames); | |
1171 | } |