Commit | Line | Data |
---|---|---|
ed3ef339 DE |
1 | /* Scheme interface to stack frames. |
2 | ||
88b9d363 | 3 | Copyright (C) 2008-2022 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 | ||
f99b5177 | 35 | /* The <gdb:frame> smob. */ |
ed3ef339 | 36 | |
f99b5177 | 37 | struct frame_smob |
ed3ef339 DE |
38 | { |
39 | /* This always appears first. */ | |
40 | eqable_gdb_smob base; | |
41 | ||
42 | struct frame_id frame_id; | |
43 | struct gdbarch *gdbarch; | |
44 | ||
45 | /* Frames are tracked by inferior. | |
46 | We need some place to put the eq?-able hash table, and this feels as | |
47 | good a place as any. Frames in one inferior shouldn't be considered | |
48 | equal to frames in a different inferior. The frame becomes invalid if | |
49 | this becomes NULL (the inferior has been deleted from gdb). | |
50 | It's easier to relax restrictions than impose them after the fact. | |
51 | N.B. It is an outstanding question whether a frame survives reruns of | |
52 | the inferior. Intuitively the answer is "No", but currently a frame | |
53 | also survives, e.g., multiple invocations of the same function from | |
54 | the same point. Even different threads can have the same frame, e.g., | |
55 | if a thread dies and a new thread gets the same stack. */ | |
56 | struct inferior *inferior; | |
57 | ||
58 | /* Marks that the FRAME_ID member actually holds the ID of the frame next | |
59 | to this, and not this frame's ID itself. This is a hack to permit Scheme | |
60 | frame objects which represent invalid frames (i.e., the last frame_info | |
61 | in a corrupt stack). The problem arises from the fact that this code | |
62 | relies on FRAME_ID to uniquely identify a frame, which is not always true | |
63 | for the last "frame" in a corrupt stack (it can have a null ID, or the | |
64 | same ID as the previous frame). Whenever get_prev_frame returns NULL, we | |
65 | record the frame_id of the next frame and set FRAME_ID_IS_NEXT to 1. */ | |
66 | int frame_id_is_next; | |
67 | }; | |
68 | ||
69 | static const char frame_smob_name[] = "gdb:frame"; | |
70 | ||
71 | /* The tag Guile knows the frame smob by. */ | |
72 | static scm_t_bits frame_smob_tag; | |
73 | ||
74 | /* Keywords used in argument passing. */ | |
75 | static SCM block_keyword; | |
76 | ||
77 | static const struct inferior_data *frscm_inferior_data_key; | |
78 | \f | |
79 | /* Administrivia for frame smobs. */ | |
80 | ||
81 | /* Helper function to hash a frame_smob. */ | |
82 | ||
83 | static hashval_t | |
84 | frscm_hash_frame_smob (const void *p) | |
85 | { | |
9a3c8263 | 86 | const frame_smob *f_smob = (const frame_smob *) p; |
ed3ef339 DE |
87 | const struct frame_id *fid = &f_smob->frame_id; |
88 | hashval_t hash = htab_hash_pointer (f_smob->inferior); | |
89 | ||
90 | if (fid->stack_status == FID_STACK_VALID) | |
91 | hash = iterative_hash (&fid->stack_addr, sizeof (fid->stack_addr), hash); | |
92 | if (fid->code_addr_p) | |
93 | hash = iterative_hash (&fid->code_addr, sizeof (fid->code_addr), hash); | |
94 | if (fid->special_addr_p) | |
95 | hash = iterative_hash (&fid->special_addr, sizeof (fid->special_addr), | |
96 | hash); | |
97 | ||
98 | return hash; | |
99 | } | |
100 | ||
101 | /* Helper function to compute equality of frame_smobs. */ | |
102 | ||
103 | static int | |
104 | frscm_eq_frame_smob (const void *ap, const void *bp) | |
105 | { | |
9a3c8263 SM |
106 | const frame_smob *a = (const frame_smob *) ap; |
107 | const frame_smob *b = (const frame_smob *) bp; | |
ed3ef339 DE |
108 | |
109 | return (frame_id_eq (a->frame_id, b->frame_id) | |
110 | && a->inferior == b->inferior | |
111 | && a->inferior != NULL); | |
112 | } | |
113 | ||
114 | /* Return the frame -> SCM mapping table. | |
115 | It is created if necessary. */ | |
116 | ||
117 | static htab_t | |
118 | frscm_inferior_frame_map (struct inferior *inferior) | |
119 | { | |
9a3c8263 | 120 | htab_t htab = (htab_t) inferior_data (inferior, frscm_inferior_data_key); |
ed3ef339 DE |
121 | |
122 | if (htab == NULL) | |
123 | { | |
124 | htab = gdbscm_create_eqable_gsmob_ptr_map (frscm_hash_frame_smob, | |
125 | frscm_eq_frame_smob); | |
126 | set_inferior_data (inferior, frscm_inferior_data_key, htab); | |
127 | } | |
128 | ||
129 | return htab; | |
130 | } | |
131 | ||
ed3ef339 DE |
132 | /* The smob "free" function for <gdb:frame>. */ |
133 | ||
134 | static size_t | |
135 | frscm_free_frame_smob (SCM self) | |
136 | { | |
137 | frame_smob *f_smob = (frame_smob *) SCM_SMOB_DATA (self); | |
138 | ||
139 | if (f_smob->inferior != NULL) | |
140 | { | |
141 | htab_t htab = frscm_inferior_frame_map (f_smob->inferior); | |
142 | ||
143 | gdbscm_clear_eqable_gsmob_ptr_slot (htab, &f_smob->base); | |
144 | } | |
145 | ||
146 | /* Not necessary, done to catch bugs. */ | |
147 | f_smob->inferior = NULL; | |
148 | ||
149 | return 0; | |
150 | } | |
151 | ||
152 | /* The smob "print" function for <gdb:frame>. */ | |
153 | ||
154 | static int | |
155 | frscm_print_frame_smob (SCM self, SCM port, scm_print_state *pstate) | |
156 | { | |
157 | frame_smob *f_smob = (frame_smob *) SCM_SMOB_DATA (self); | |
ed3ef339 | 158 | |
927c4e35 AB |
159 | gdbscm_printf (port, "#<%s %s>", |
160 | frame_smob_name, | |
161 | f_smob->frame_id.to_string ().c_str ()); | |
ed3ef339 DE |
162 | scm_remember_upto_here_1 (self); |
163 | ||
164 | /* Non-zero means success. */ | |
165 | return 1; | |
166 | } | |
167 | ||
168 | /* Low level routine to create a <gdb:frame> object. */ | |
169 | ||
170 | static SCM | |
171 | frscm_make_frame_smob (void) | |
172 | { | |
173 | frame_smob *f_smob = (frame_smob *) | |
174 | scm_gc_malloc (sizeof (frame_smob), frame_smob_name); | |
175 | SCM f_scm; | |
176 | ||
177 | f_smob->frame_id = null_frame_id; | |
178 | f_smob->gdbarch = NULL; | |
179 | f_smob->inferior = NULL; | |
180 | f_smob->frame_id_is_next = 0; | |
181 | f_scm = scm_new_smob (frame_smob_tag, (scm_t_bits) f_smob); | |
1254eefc | 182 | gdbscm_init_eqable_gsmob (&f_smob->base, f_scm); |
ed3ef339 DE |
183 | |
184 | return f_scm; | |
185 | } | |
186 | ||
187 | /* Return non-zero if SCM is a <gdb:frame> object. */ | |
188 | ||
189 | int | |
190 | frscm_is_frame (SCM scm) | |
191 | { | |
192 | return SCM_SMOB_PREDICATE (frame_smob_tag, scm); | |
193 | } | |
194 | ||
195 | /* (frame? object) -> boolean */ | |
196 | ||
197 | static SCM | |
198 | gdbscm_frame_p (SCM scm) | |
199 | { | |
200 | return scm_from_bool (frscm_is_frame (scm)); | |
201 | } | |
202 | ||
203 | /* Create a new <gdb:frame> object that encapsulates FRAME. | |
204 | Returns a <gdb:exception> object if there is an error. */ | |
205 | ||
206 | static SCM | |
207 | frscm_scm_from_frame (struct frame_info *frame, struct inferior *inferior) | |
208 | { | |
209 | frame_smob *f_smob, f_smob_for_lookup; | |
210 | SCM f_scm; | |
211 | htab_t htab; | |
212 | eqable_gdb_smob **slot; | |
ed3ef339 DE |
213 | struct frame_id frame_id = null_frame_id; |
214 | struct gdbarch *gdbarch = NULL; | |
215 | int frame_id_is_next = 0; | |
216 | ||
217 | /* If we've already created a gsmob for this frame, return it. | |
218 | This makes frames eq?-able. */ | |
219 | htab = frscm_inferior_frame_map (inferior); | |
220 | f_smob_for_lookup.frame_id = get_frame_id (frame); | |
221 | f_smob_for_lookup.inferior = inferior; | |
222 | slot = gdbscm_find_eqable_gsmob_ptr_slot (htab, &f_smob_for_lookup.base); | |
223 | if (*slot != NULL) | |
224 | return (*slot)->containing_scm; | |
225 | ||
a70b8144 | 226 | try |
ed3ef339 DE |
227 | { |
228 | /* Try to get the previous frame, to determine if this is the last frame | |
229 | in a corrupt stack. If so, we need to store the frame_id of the next | |
230 | frame and not of this one (which is possibly invalid). */ | |
231 | if (get_prev_frame (frame) == NULL | |
232 | && get_frame_unwind_stop_reason (frame) != UNWIND_NO_REASON | |
233 | && get_next_frame (frame) != NULL) | |
234 | { | |
235 | frame_id = get_frame_id (get_next_frame (frame)); | |
236 | frame_id_is_next = 1; | |
237 | } | |
238 | else | |
239 | { | |
240 | frame_id = get_frame_id (frame); | |
241 | frame_id_is_next = 0; | |
242 | } | |
243 | gdbarch = get_frame_arch (frame); | |
244 | } | |
230d2906 | 245 | catch (const gdb_exception &except) |
492d29ea | 246 | { |
680d7fd5 | 247 | return gdbscm_scm_from_gdb_exception (unpack (except)); |
492d29ea | 248 | } |
ed3ef339 DE |
249 | |
250 | f_scm = frscm_make_frame_smob (); | |
251 | f_smob = (frame_smob *) SCM_SMOB_DATA (f_scm); | |
252 | f_smob->frame_id = frame_id; | |
253 | f_smob->gdbarch = gdbarch; | |
254 | f_smob->inferior = inferior; | |
255 | f_smob->frame_id_is_next = frame_id_is_next; | |
256 | ||
1254eefc | 257 | gdbscm_fill_eqable_gsmob_ptr_slot (slot, &f_smob->base); |
ed3ef339 DE |
258 | |
259 | return f_scm; | |
260 | } | |
261 | ||
262 | /* Create a new <gdb:frame> object that encapsulates FRAME. | |
263 | A Scheme exception is thrown if there is an error. */ | |
264 | ||
265 | static SCM | |
266 | frscm_scm_from_frame_unsafe (struct frame_info *frame, | |
267 | struct inferior *inferior) | |
268 | { | |
269 | SCM f_scm = frscm_scm_from_frame (frame, inferior); | |
270 | ||
271 | if (gdbscm_is_exception (f_scm)) | |
272 | gdbscm_throw (f_scm); | |
273 | ||
274 | return f_scm; | |
275 | } | |
276 | ||
277 | /* Returns the <gdb:frame> object in SELF. | |
278 | Throws an exception if SELF is not a <gdb:frame> object. */ | |
279 | ||
280 | static SCM | |
281 | frscm_get_frame_arg_unsafe (SCM self, int arg_pos, const char *func_name) | |
282 | { | |
283 | SCM_ASSERT_TYPE (frscm_is_frame (self), self, arg_pos, func_name, | |
284 | frame_smob_name); | |
285 | ||
286 | return self; | |
287 | } | |
288 | ||
289 | /* There is no gdbscm_scm_to_frame function because translating | |
290 | a frame SCM object to a struct frame_info * can throw a GDB error. | |
291 | Thus code working with frames has to handle both Scheme errors (e.g., the | |
292 | object is not a frame) and GDB errors (e.g., the frame lookup failed). | |
293 | ||
e9fbd043 DE |
294 | To help keep things clear we split what would be gdbscm_scm_to_frame |
295 | into two: | |
ed3ef339 | 296 | |
e9fbd043 | 297 | frscm_get_frame_smob_arg_unsafe |
ed3ef339 DE |
298 | - throws a Scheme error if object is not a frame, |
299 | or if the inferior is gone or is no longer current | |
300 | ||
e9fbd043 | 301 | frscm_frame_smob_to_frame |
ed3ef339 DE |
302 | - may throw a gdb error if the conversion fails |
303 | - it's not clear when it will and won't throw a GDB error, | |
304 | but for robustness' sake we assume that whenever we call out to GDB | |
305 | a GDB error may get thrown (and thus the call must be wrapped in a | |
306 | TRY_CATCH) */ | |
307 | ||
308 | /* Returns the frame_smob for the object wrapped by FRAME_SCM. | |
309 | A Scheme error is thrown if FRAME_SCM is not a frame. */ | |
310 | ||
311 | frame_smob * | |
312 | frscm_get_frame_smob_arg_unsafe (SCM self, int arg_pos, const char *func_name) | |
313 | { | |
314 | SCM f_scm = frscm_get_frame_arg_unsafe (self, arg_pos, func_name); | |
315 | frame_smob *f_smob = (frame_smob *) SCM_SMOB_DATA (f_scm); | |
316 | ||
317 | if (f_smob->inferior == NULL) | |
318 | { | |
319 | gdbscm_invalid_object_error (func_name, arg_pos, self, | |
320 | _("inferior")); | |
321 | } | |
322 | if (f_smob->inferior != current_inferior ()) | |
323 | scm_misc_error (func_name, _("inferior has changed"), SCM_EOL); | |
324 | ||
325 | return f_smob; | |
326 | } | |
327 | ||
328 | /* Returns the frame_info object wrapped by F_SMOB. | |
329 | If the frame doesn't exist anymore (the frame id doesn't | |
330 | correspond to any frame in the inferior), returns NULL. | |
331 | This function calls GDB routines, so don't assume a GDB error will | |
332 | not be thrown. */ | |
333 | ||
334 | struct frame_info * | |
335 | frscm_frame_smob_to_frame (frame_smob *f_smob) | |
336 | { | |
337 | struct frame_info *frame; | |
338 | ||
339 | frame = frame_find_by_id (f_smob->frame_id); | |
340 | if (frame == NULL) | |
341 | return NULL; | |
342 | ||
343 | if (f_smob->frame_id_is_next) | |
344 | frame = get_prev_frame (frame); | |
345 | ||
346 | return frame; | |
347 | } | |
348 | ||
349 | /* Helper function for frscm_del_inferior_frames to mark the frame | |
350 | as invalid. */ | |
351 | ||
352 | static int | |
353 | frscm_mark_frame_invalid (void **slot, void *info) | |
354 | { | |
355 | frame_smob *f_smob = (frame_smob *) *slot; | |
356 | ||
357 | f_smob->inferior = NULL; | |
358 | return 1; | |
359 | } | |
360 | ||
361 | /* This function is called when an inferior is about to be freed. | |
362 | Invalidate the frame as further actions on the frame could result | |
363 | in bad data. All access to the frame should be gated by | |
364 | frscm_get_frame_smob_arg_unsafe which will raise an exception on | |
365 | invalid frames. */ | |
366 | ||
367 | static void | |
368 | frscm_del_inferior_frames (struct inferior *inferior, void *datum) | |
369 | { | |
9a3c8263 | 370 | htab_t htab = (htab_t) datum; |
ed3ef339 DE |
371 | |
372 | if (htab != NULL) | |
373 | { | |
374 | htab_traverse_noresize (htab, frscm_mark_frame_invalid, NULL); | |
375 | htab_delete (htab); | |
376 | } | |
377 | } | |
378 | \f | |
379 | /* Frame methods. */ | |
380 | ||
381 | /* (frame-valid? <gdb:frame>) -> bool | |
382 | Returns #t if the frame corresponding to the frame_id of this | |
383 | object still exists in the inferior. */ | |
384 | ||
385 | static SCM | |
386 | gdbscm_frame_valid_p (SCM self) | |
387 | { | |
388 | frame_smob *f_smob; | |
389 | struct frame_info *frame = NULL; | |
ed3ef339 DE |
390 | |
391 | f_smob = frscm_get_frame_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
392 | ||
680d7fd5 | 393 | gdbscm_gdb_exception exc {}; |
a70b8144 | 394 | try |
ed3ef339 DE |
395 | { |
396 | frame = frscm_frame_smob_to_frame (f_smob); | |
397 | } | |
230d2906 | 398 | catch (const gdb_exception &except) |
492d29ea | 399 | { |
680d7fd5 | 400 | exc = unpack (except); |
492d29ea | 401 | } |
ed3ef339 | 402 | |
680d7fd5 | 403 | GDBSCM_HANDLE_GDB_EXCEPTION (exc); |
ed3ef339 DE |
404 | return scm_from_bool (frame != NULL); |
405 | } | |
406 | ||
407 | /* (frame-name <gdb:frame>) -> string | |
408 | Returns the name of the function corresponding to this frame, | |
409 | or #f if there is no function. */ | |
410 | ||
411 | static SCM | |
412 | gdbscm_frame_name (SCM self) | |
413 | { | |
414 | frame_smob *f_smob; | |
c6dc63a1 | 415 | gdb::unique_xmalloc_ptr<char> name; |
ed3ef339 DE |
416 | enum language lang = language_minimal; |
417 | struct frame_info *frame = NULL; | |
418 | SCM result; | |
ed3ef339 DE |
419 | |
420 | f_smob = frscm_get_frame_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
421 | ||
680d7fd5 | 422 | gdbscm_gdb_exception exc {}; |
a70b8144 | 423 | try |
ed3ef339 DE |
424 | { |
425 | frame = frscm_frame_smob_to_frame (f_smob); | |
426 | if (frame != NULL) | |
c6dc63a1 | 427 | name = find_frame_funname (frame, &lang, NULL); |
ed3ef339 | 428 | } |
230d2906 | 429 | catch (const gdb_exception &except) |
492d29ea | 430 | { |
680d7fd5 | 431 | exc = unpack (except); |
492d29ea | 432 | } |
492d29ea | 433 | |
680d7fd5 | 434 | GDBSCM_HANDLE_GDB_EXCEPTION (exc); |
ed3ef339 DE |
435 | if (frame == NULL) |
436 | { | |
437 | gdbscm_invalid_object_error (FUNC_NAME, SCM_ARG1, self, | |
438 | _("<gdb:frame>")); | |
439 | } | |
440 | ||
441 | if (name != NULL) | |
c6dc63a1 | 442 | result = gdbscm_scm_from_c_string (name.get ()); |
ed3ef339 DE |
443 | else |
444 | result = SCM_BOOL_F; | |
445 | ||
446 | return result; | |
447 | } | |
448 | ||
449 | /* (frame-type <gdb:frame>) -> integer | |
450 | Returns the frame type, namely one of the gdb:*_FRAME constants. */ | |
451 | ||
452 | static SCM | |
453 | gdbscm_frame_type (SCM self) | |
454 | { | |
455 | frame_smob *f_smob; | |
456 | enum frame_type type = NORMAL_FRAME; | |
457 | struct frame_info *frame = NULL; | |
ed3ef339 DE |
458 | |
459 | f_smob = frscm_get_frame_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
460 | ||
680d7fd5 | 461 | gdbscm_gdb_exception exc {}; |
a70b8144 | 462 | try |
ed3ef339 DE |
463 | { |
464 | frame = frscm_frame_smob_to_frame (f_smob); | |
465 | if (frame != NULL) | |
466 | type = get_frame_type (frame); | |
467 | } | |
230d2906 | 468 | catch (const gdb_exception &except) |
492d29ea | 469 | { |
680d7fd5 | 470 | exc = unpack (except); |
492d29ea | 471 | } |
ed3ef339 | 472 | |
680d7fd5 | 473 | GDBSCM_HANDLE_GDB_EXCEPTION (exc); |
ed3ef339 DE |
474 | if (frame == NULL) |
475 | { | |
476 | gdbscm_invalid_object_error (FUNC_NAME, SCM_ARG1, self, | |
477 | _("<gdb:frame>")); | |
478 | } | |
479 | ||
480 | return scm_from_int (type); | |
481 | } | |
482 | ||
483 | /* (frame-arch <gdb:frame>) -> <gdb:architecture> | |
484 | Returns the frame's architecture as a gdb:architecture object. */ | |
485 | ||
486 | static SCM | |
487 | gdbscm_frame_arch (SCM self) | |
488 | { | |
489 | frame_smob *f_smob; | |
490 | struct frame_info *frame = NULL; | |
ed3ef339 DE |
491 | |
492 | f_smob = frscm_get_frame_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
493 | ||
680d7fd5 | 494 | gdbscm_gdb_exception exc {}; |
a70b8144 | 495 | try |
ed3ef339 DE |
496 | { |
497 | frame = frscm_frame_smob_to_frame (f_smob); | |
498 | } | |
230d2906 | 499 | catch (const gdb_exception &except) |
492d29ea | 500 | { |
680d7fd5 | 501 | exc = unpack (except); |
492d29ea | 502 | } |
ed3ef339 | 503 | |
680d7fd5 | 504 | GDBSCM_HANDLE_GDB_EXCEPTION (exc); |
ed3ef339 DE |
505 | if (frame == NULL) |
506 | { | |
507 | gdbscm_invalid_object_error (FUNC_NAME, SCM_ARG1, self, | |
508 | _("<gdb:frame>")); | |
509 | } | |
510 | ||
511 | return arscm_scm_from_arch (f_smob->gdbarch); | |
512 | } | |
513 | ||
514 | /* (frame-unwind-stop-reason <gdb:frame>) -> integer | |
515 | Returns one of the gdb:FRAME_UNWIND_* constants. */ | |
516 | ||
517 | static SCM | |
518 | gdbscm_frame_unwind_stop_reason (SCM self) | |
519 | { | |
520 | frame_smob *f_smob; | |
521 | struct frame_info *frame = NULL; | |
ed3ef339 DE |
522 | enum unwind_stop_reason stop_reason; |
523 | ||
524 | f_smob = frscm_get_frame_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
525 | ||
680d7fd5 | 526 | gdbscm_gdb_exception exc {}; |
a70b8144 | 527 | try |
ed3ef339 DE |
528 | { |
529 | frame = frscm_frame_smob_to_frame (f_smob); | |
530 | } | |
230d2906 | 531 | catch (const gdb_exception &except) |
492d29ea | 532 | { |
680d7fd5 | 533 | exc = unpack (except); |
492d29ea | 534 | } |
ed3ef339 | 535 | |
680d7fd5 | 536 | GDBSCM_HANDLE_GDB_EXCEPTION (exc); |
ed3ef339 DE |
537 | if (frame == NULL) |
538 | { | |
539 | gdbscm_invalid_object_error (FUNC_NAME, SCM_ARG1, self, | |
540 | _("<gdb:frame>")); | |
541 | } | |
542 | ||
543 | stop_reason = get_frame_unwind_stop_reason (frame); | |
544 | ||
545 | return scm_from_int (stop_reason); | |
546 | } | |
547 | ||
548 | /* (frame-pc <gdb:frame>) -> integer | |
549 | Returns the frame's resume address. */ | |
550 | ||
551 | static SCM | |
552 | gdbscm_frame_pc (SCM self) | |
553 | { | |
554 | frame_smob *f_smob; | |
555 | CORE_ADDR pc = 0; | |
556 | struct frame_info *frame = NULL; | |
ed3ef339 DE |
557 | |
558 | f_smob = frscm_get_frame_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
559 | ||
680d7fd5 | 560 | gdbscm_gdb_exception exc {}; |
a70b8144 | 561 | try |
ed3ef339 DE |
562 | { |
563 | frame = frscm_frame_smob_to_frame (f_smob); | |
564 | if (frame != NULL) | |
565 | pc = get_frame_pc (frame); | |
566 | } | |
230d2906 | 567 | catch (const gdb_exception &except) |
492d29ea | 568 | { |
680d7fd5 | 569 | exc = unpack (except); |
492d29ea | 570 | } |
ed3ef339 | 571 | |
680d7fd5 | 572 | GDBSCM_HANDLE_GDB_EXCEPTION (exc); |
ed3ef339 DE |
573 | if (frame == NULL) |
574 | { | |
575 | gdbscm_invalid_object_error (FUNC_NAME, SCM_ARG1, self, | |
576 | _("<gdb:frame>")); | |
577 | } | |
578 | ||
579 | return gdbscm_scm_from_ulongest (pc); | |
580 | } | |
581 | ||
582 | /* (frame-block <gdb:frame>) -> <gdb:block> | |
583 | Returns the frame's code block, or #f if one cannot be found. */ | |
584 | ||
585 | static SCM | |
586 | gdbscm_frame_block (SCM self) | |
587 | { | |
588 | frame_smob *f_smob; | |
3977b71f | 589 | const struct block *block = NULL, *fn_block; |
ed3ef339 | 590 | struct frame_info *frame = NULL; |
ed3ef339 DE |
591 | |
592 | f_smob = frscm_get_frame_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
593 | ||
680d7fd5 | 594 | gdbscm_gdb_exception exc {}; |
a70b8144 | 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 | } | |
230d2906 | 601 | catch (const gdb_exception &except) |
492d29ea | 602 | { |
680d7fd5 | 603 | exc = unpack (except); |
492d29ea | 604 | } |
ed3ef339 | 605 | |
680d7fd5 | 606 | GDBSCM_HANDLE_GDB_EXCEPTION (exc); |
ed3ef339 DE |
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 | ||
680d7fd5 | 646 | gdbscm_gdb_exception exc {}; |
a70b8144 | 647 | try |
ed3ef339 DE |
648 | { |
649 | frame = frscm_frame_smob_to_frame (f_smob); | |
650 | if (frame != NULL) | |
651 | sym = find_pc_function (get_frame_address_in_block (frame)); | |
652 | } | |
230d2906 | 653 | catch (const gdb_exception &except) |
492d29ea | 654 | { |
680d7fd5 | 655 | exc = unpack (except); |
492d29ea | 656 | } |
ed3ef339 | 657 | |
680d7fd5 | 658 | GDBSCM_HANDLE_GDB_EXCEPTION (exc); |
ed3ef339 DE |
659 | if (frame == NULL) |
660 | { | |
661 | gdbscm_invalid_object_error (FUNC_NAME, SCM_ARG1, self, | |
662 | _("<gdb:frame>")); | |
663 | } | |
664 | ||
665 | if (sym != NULL) | |
666 | return syscm_scm_from_symbol (sym); | |
667 | ||
668 | return SCM_BOOL_F; | |
669 | } | |
670 | ||
671 | /* (frame-older <gdb:frame>) -> <gdb:frame> | |
672 | Returns the frame immediately older (outer) to this frame, | |
673 | or #f if there isn't one. */ | |
674 | ||
675 | static SCM | |
676 | gdbscm_frame_older (SCM self) | |
677 | { | |
678 | frame_smob *f_smob; | |
679 | struct frame_info *prev = NULL; | |
680 | struct frame_info *frame = NULL; | |
ed3ef339 DE |
681 | |
682 | f_smob = frscm_get_frame_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
683 | ||
680d7fd5 | 684 | gdbscm_gdb_exception exc {}; |
a70b8144 | 685 | try |
ed3ef339 DE |
686 | { |
687 | frame = frscm_frame_smob_to_frame (f_smob); | |
688 | if (frame != NULL) | |
689 | prev = get_prev_frame (frame); | |
690 | } | |
230d2906 | 691 | catch (const gdb_exception &except) |
492d29ea | 692 | { |
680d7fd5 | 693 | exc = unpack (except); |
492d29ea | 694 | } |
ed3ef339 | 695 | |
680d7fd5 | 696 | GDBSCM_HANDLE_GDB_EXCEPTION (exc); |
ed3ef339 DE |
697 | if (frame == NULL) |
698 | { | |
699 | gdbscm_invalid_object_error (FUNC_NAME, SCM_ARG1, self, | |
700 | _("<gdb:frame>")); | |
701 | } | |
702 | ||
703 | if (prev != NULL) | |
704 | return frscm_scm_from_frame_unsafe (prev, f_smob->inferior); | |
705 | ||
706 | return SCM_BOOL_F; | |
707 | } | |
708 | ||
709 | /* (frame-newer <gdb:frame>) -> <gdb:frame> | |
710 | Returns the frame immediately newer (inner) to this frame, | |
711 | or #f if there isn't one. */ | |
712 | ||
713 | static SCM | |
714 | gdbscm_frame_newer (SCM self) | |
715 | { | |
716 | frame_smob *f_smob; | |
717 | struct frame_info *next = NULL; | |
718 | struct frame_info *frame = NULL; | |
ed3ef339 DE |
719 | |
720 | f_smob = frscm_get_frame_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
721 | ||
680d7fd5 | 722 | gdbscm_gdb_exception exc {}; |
a70b8144 | 723 | try |
ed3ef339 DE |
724 | { |
725 | frame = frscm_frame_smob_to_frame (f_smob); | |
726 | if (frame != NULL) | |
727 | next = get_next_frame (frame); | |
728 | } | |
230d2906 | 729 | catch (const gdb_exception &except) |
492d29ea | 730 | { |
680d7fd5 | 731 | exc = unpack (except); |
492d29ea | 732 | } |
ed3ef339 | 733 | |
680d7fd5 | 734 | GDBSCM_HANDLE_GDB_EXCEPTION (exc); |
ed3ef339 DE |
735 | if (frame == NULL) |
736 | { | |
737 | gdbscm_invalid_object_error (FUNC_NAME, SCM_ARG1, self, | |
738 | _("<gdb:frame>")); | |
739 | } | |
740 | ||
741 | if (next != NULL) | |
742 | return frscm_scm_from_frame_unsafe (next, f_smob->inferior); | |
743 | ||
744 | return SCM_BOOL_F; | |
745 | } | |
746 | ||
747 | /* (frame-sal <gdb:frame>) -> <gdb:sal> | |
748 | Returns the frame's symtab and line. */ | |
749 | ||
750 | static SCM | |
751 | gdbscm_frame_sal (SCM self) | |
752 | { | |
753 | frame_smob *f_smob; | |
754 | struct symtab_and_line sal; | |
755 | struct frame_info *frame = NULL; | |
ed3ef339 DE |
756 | |
757 | f_smob = frscm_get_frame_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
758 | ||
680d7fd5 | 759 | gdbscm_gdb_exception exc {}; |
a70b8144 | 760 | try |
ed3ef339 DE |
761 | { |
762 | frame = frscm_frame_smob_to_frame (f_smob); | |
763 | if (frame != NULL) | |
51abb421 | 764 | sal = find_frame_sal (frame); |
ed3ef339 | 765 | } |
230d2906 | 766 | catch (const gdb_exception &except) |
492d29ea | 767 | { |
680d7fd5 | 768 | exc = unpack (except); |
492d29ea | 769 | } |
ed3ef339 | 770 | |
680d7fd5 | 771 | GDBSCM_HANDLE_GDB_EXCEPTION (exc); |
ed3ef339 DE |
772 | if (frame == NULL) |
773 | { | |
774 | gdbscm_invalid_object_error (FUNC_NAME, SCM_ARG1, self, | |
775 | _("<gdb:frame>")); | |
776 | } | |
777 | ||
778 | return stscm_scm_from_sal (sal); | |
779 | } | |
780 | ||
f2983cc3 AW |
781 | /* (frame-read-register <gdb:frame> string) -> <gdb:value> |
782 | The register argument must be a string. */ | |
783 | ||
784 | static SCM | |
785 | gdbscm_frame_read_register (SCM self, SCM register_scm) | |
786 | { | |
787 | char *register_str; | |
788 | struct value *value = NULL; | |
789 | struct frame_info *frame = NULL; | |
f2983cc3 AW |
790 | frame_smob *f_smob; |
791 | ||
792 | f_smob = frscm_get_frame_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
793 | gdbscm_parse_function_args (FUNC_NAME, SCM_ARG2, NULL, "s", | |
794 | register_scm, ®ister_str); | |
557e56be | 795 | |
680d7fd5 | 796 | gdbscm_gdb_exception except {}; |
f2983cc3 | 797 | |
a70b8144 | 798 | try |
f2983cc3 AW |
799 | { |
800 | int regnum; | |
801 | ||
802 | frame = frscm_frame_smob_to_frame (f_smob); | |
803 | if (frame) | |
804 | { | |
805 | regnum = user_reg_map_name_to_regnum (get_frame_arch (frame), | |
806 | register_str, | |
807 | strlen (register_str)); | |
808 | if (regnum >= 0) | |
809 | value = value_of_register (regnum, frame); | |
810 | } | |
811 | } | |
230d2906 | 812 | catch (const gdb_exception &ex) |
f2983cc3 | 813 | { |
680d7fd5 | 814 | except = unpack (ex); |
f2983cc3 | 815 | } |
f2983cc3 | 816 | |
557e56be PA |
817 | xfree (register_str); |
818 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
f2983cc3 AW |
819 | |
820 | if (frame == NULL) | |
821 | { | |
822 | gdbscm_invalid_object_error (FUNC_NAME, SCM_ARG1, self, | |
823 | _("<gdb:frame>")); | |
824 | } | |
825 | ||
826 | if (value == NULL) | |
827 | { | |
828 | gdbscm_out_of_range_error (FUNC_NAME, SCM_ARG2, register_scm, | |
829 | _("unknown register")); | |
830 | } | |
831 | ||
832 | return vlscm_scm_from_value (value); | |
833 | } | |
834 | ||
ed3ef339 DE |
835 | /* (frame-read-var <gdb:frame> <gdb:symbol>) -> <gdb:value> |
836 | (frame-read-var <gdb:frame> string [#:block <gdb:block>]) -> <gdb:value> | |
837 | If the optional block argument is provided start the search from that block, | |
838 | otherwise search from the frame's current block (determined by examining | |
839 | the resume address of the frame). The variable argument must be a string | |
840 | or an instance of a <gdb:symbol>. The block argument must be an instance of | |
841 | <gdb:block>. */ | |
842 | ||
843 | static SCM | |
844 | gdbscm_frame_read_var (SCM self, SCM symbol_scm, SCM rest) | |
845 | { | |
846 | SCM keywords[] = { block_keyword, SCM_BOOL_F }; | |
ed3ef339 DE |
847 | frame_smob *f_smob; |
848 | int block_arg_pos = -1; | |
849 | SCM block_scm = SCM_UNDEFINED; | |
850 | struct frame_info *frame = NULL; | |
851 | struct symbol *var = NULL; | |
63e43d3a | 852 | const struct block *block = NULL; |
ed3ef339 | 853 | struct value *value = NULL; |
ed3ef339 DE |
854 | |
855 | f_smob = frscm_get_frame_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
856 | ||
680d7fd5 | 857 | gdbscm_gdb_exception exc {}; |
a70b8144 | 858 | try |
ed3ef339 DE |
859 | { |
860 | frame = frscm_frame_smob_to_frame (f_smob); | |
861 | } | |
230d2906 | 862 | catch (const gdb_exception &except) |
492d29ea | 863 | { |
680d7fd5 | 864 | exc = unpack (except); |
492d29ea | 865 | } |
ed3ef339 | 866 | |
680d7fd5 | 867 | GDBSCM_HANDLE_GDB_EXCEPTION (exc); |
ed3ef339 DE |
868 | if (frame == NULL) |
869 | { | |
870 | gdbscm_invalid_object_error (FUNC_NAME, SCM_ARG1, self, | |
871 | _("<gdb:frame>")); | |
872 | } | |
873 | ||
874 | gdbscm_parse_function_args (FUNC_NAME, SCM_ARG3, keywords, "#O", | |
875 | rest, &block_arg_pos, &block_scm); | |
876 | ||
877 | if (syscm_is_symbol (symbol_scm)) | |
878 | { | |
879 | var = syscm_get_valid_symbol_arg_unsafe (symbol_scm, SCM_ARG2, | |
880 | FUNC_NAME); | |
881 | SCM_ASSERT (SCM_UNBNDP (block_scm), block_scm, SCM_ARG3, FUNC_NAME); | |
882 | } | |
883 | else if (scm_is_string (symbol_scm)) | |
884 | { | |
680d7fd5 | 885 | gdbscm_gdb_exception except {}; |
ed3ef339 DE |
886 | |
887 | if (! SCM_UNBNDP (block_scm)) | |
888 | { | |
889 | SCM except_scm; | |
890 | ||
891 | gdb_assert (block_arg_pos > 0); | |
892 | block = bkscm_scm_to_block (block_scm, block_arg_pos, FUNC_NAME, | |
893 | &except_scm); | |
894 | if (block == NULL) | |
895 | gdbscm_throw (except_scm); | |
896 | } | |
897 | ||
a95c7dab TT |
898 | { |
899 | gdb::unique_xmalloc_ptr<char> var_name | |
900 | (gdbscm_scm_to_c_string (symbol_scm)); | |
901 | /* N.B. Between here and the end of the scope, don't do anything | |
902 | to cause a Scheme exception. */ | |
903 | ||
a70b8144 | 904 | try |
a95c7dab TT |
905 | { |
906 | struct block_symbol lookup_sym; | |
907 | ||
908 | if (block == NULL) | |
909 | block = get_frame_block (frame, NULL); | |
910 | lookup_sym = lookup_symbol (var_name.get (), block, VAR_DOMAIN, | |
911 | NULL); | |
912 | var = lookup_sym.symbol; | |
913 | block = lookup_sym.block; | |
914 | } | |
230d2906 | 915 | catch (const gdb_exception &ex) |
a95c7dab | 916 | { |
680d7fd5 | 917 | except = unpack (ex); |
a95c7dab | 918 | } |
a95c7dab | 919 | } |
ed3ef339 | 920 | |
ed3ef339 DE |
921 | GDBSCM_HANDLE_GDB_EXCEPTION (except); |
922 | ||
923 | if (var == NULL) | |
a95c7dab TT |
924 | gdbscm_out_of_range_error (FUNC_NAME, 0, symbol_scm, |
925 | _("variable not found")); | |
ed3ef339 DE |
926 | } |
927 | else | |
928 | { | |
929 | /* Use SCM_ASSERT_TYPE for more consistent error messages. */ | |
930 | SCM_ASSERT_TYPE (0, symbol_scm, SCM_ARG1, FUNC_NAME, | |
931 | _("gdb:symbol or string")); | |
932 | } | |
933 | ||
a70b8144 | 934 | try |
ed3ef339 | 935 | { |
63e43d3a | 936 | value = read_var_value (var, block, frame); |
ed3ef339 | 937 | } |
230d2906 | 938 | catch (const gdb_exception &except) |
492d29ea | 939 | { |
680d7fd5 | 940 | exc = unpack (except); |
492d29ea | 941 | } |
ed3ef339 | 942 | |
680d7fd5 | 943 | GDBSCM_HANDLE_GDB_EXCEPTION (exc); |
ed3ef339 DE |
944 | return vlscm_scm_from_value (value); |
945 | } | |
946 | ||
947 | /* (frame-select <gdb:frame>) -> unspecified | |
948 | Select this frame. */ | |
949 | ||
950 | static SCM | |
951 | gdbscm_frame_select (SCM self) | |
952 | { | |
953 | frame_smob *f_smob; | |
954 | struct frame_info *frame = NULL; | |
ed3ef339 DE |
955 | |
956 | f_smob = frscm_get_frame_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
957 | ||
680d7fd5 | 958 | gdbscm_gdb_exception exc {}; |
a70b8144 | 959 | try |
ed3ef339 DE |
960 | { |
961 | frame = frscm_frame_smob_to_frame (f_smob); | |
962 | if (frame != NULL) | |
963 | select_frame (frame); | |
964 | } | |
230d2906 | 965 | catch (const gdb_exception &except) |
492d29ea | 966 | { |
680d7fd5 | 967 | exc = unpack (except); |
492d29ea | 968 | } |
ed3ef339 | 969 | |
680d7fd5 | 970 | GDBSCM_HANDLE_GDB_EXCEPTION (exc); |
ed3ef339 DE |
971 | if (frame == NULL) |
972 | { | |
973 | gdbscm_invalid_object_error (FUNC_NAME, SCM_ARG1, self, | |
974 | _("<gdb:frame>")); | |
975 | } | |
976 | ||
977 | return SCM_UNSPECIFIED; | |
978 | } | |
979 | ||
980 | /* (newest-frame) -> <gdb:frame> | |
981 | Returns the newest frame. */ | |
982 | ||
983 | static SCM | |
984 | gdbscm_newest_frame (void) | |
985 | { | |
986 | struct frame_info *frame = NULL; | |
ed3ef339 | 987 | |
680d7fd5 | 988 | gdbscm_gdb_exception exc {}; |
a70b8144 | 989 | try |
ed3ef339 DE |
990 | { |
991 | frame = get_current_frame (); | |
992 | } | |
230d2906 | 993 | catch (const gdb_exception &except) |
492d29ea | 994 | { |
680d7fd5 | 995 | exc = unpack (except); |
492d29ea | 996 | } |
ed3ef339 | 997 | |
680d7fd5 | 998 | GDBSCM_HANDLE_GDB_EXCEPTION (exc); |
ed3ef339 DE |
999 | return frscm_scm_from_frame_unsafe (frame, current_inferior ()); |
1000 | } | |
1001 | ||
1002 | /* (selected-frame) -> <gdb:frame> | |
1003 | Returns the selected frame. */ | |
1004 | ||
1005 | static SCM | |
1006 | gdbscm_selected_frame (void) | |
1007 | { | |
1008 | struct frame_info *frame = NULL; | |
ed3ef339 | 1009 | |
680d7fd5 | 1010 | gdbscm_gdb_exception exc {}; |
a70b8144 | 1011 | try |
ed3ef339 DE |
1012 | { |
1013 | frame = get_selected_frame (_("No frame is currently selected")); | |
1014 | } | |
230d2906 | 1015 | catch (const gdb_exception &except) |
492d29ea | 1016 | { |
680d7fd5 | 1017 | exc = unpack (except); |
492d29ea | 1018 | } |
ed3ef339 | 1019 | |
680d7fd5 | 1020 | GDBSCM_HANDLE_GDB_EXCEPTION (exc); |
ed3ef339 DE |
1021 | return frscm_scm_from_frame_unsafe (frame, current_inferior ()); |
1022 | } | |
1023 | ||
1024 | /* (unwind-stop-reason-string integer) -> string | |
1025 | Return a string explaining the unwind stop reason. */ | |
1026 | ||
1027 | static SCM | |
1028 | gdbscm_unwind_stop_reason_string (SCM reason_scm) | |
1029 | { | |
1030 | int reason; | |
1031 | const char *str; | |
1032 | ||
1033 | gdbscm_parse_function_args (FUNC_NAME, SCM_ARG1, NULL, "i", | |
1034 | reason_scm, &reason); | |
1035 | ||
1036 | if (reason < UNWIND_FIRST || reason > UNWIND_LAST) | |
1037 | scm_out_of_range (FUNC_NAME, reason_scm); | |
1038 | ||
fa4c39cb | 1039 | str = unwind_stop_reason_to_string ((enum unwind_stop_reason) reason); |
ed3ef339 DE |
1040 | return gdbscm_scm_from_c_string (str); |
1041 | } | |
1042 | \f | |
1043 | /* Initialize the Scheme frame support. */ | |
1044 | ||
1045 | static const scheme_integer_constant frame_integer_constants[] = | |
1046 | { | |
1047 | #define ENTRY(X) { #X, X } | |
1048 | ||
1049 | ENTRY (NORMAL_FRAME), | |
1050 | ENTRY (DUMMY_FRAME), | |
1051 | ENTRY (INLINE_FRAME), | |
1052 | ENTRY (TAILCALL_FRAME), | |
1053 | ENTRY (SIGTRAMP_FRAME), | |
1054 | ENTRY (ARCH_FRAME), | |
1055 | ENTRY (SENTINEL_FRAME), | |
1056 | ||
1057 | #undef ENTRY | |
1058 | ||
1059 | #define SET(name, description) \ | |
1060 | { "FRAME_" #name, name }, | |
1061 | #include "unwind_stop_reasons.def" | |
1062 | #undef SET | |
1063 | ||
1064 | END_INTEGER_CONSTANTS | |
1065 | }; | |
1066 | ||
1067 | static const scheme_function frame_functions[] = | |
1068 | { | |
72e02483 | 1069 | { "frame?", 1, 0, 0, as_a_scm_t_subr (gdbscm_frame_p), |
ed3ef339 DE |
1070 | "\ |
1071 | Return #t if the object is a <gdb:frame> object." }, | |
1072 | ||
72e02483 | 1073 | { "frame-valid?", 1, 0, 0, as_a_scm_t_subr (gdbscm_frame_valid_p), |
ed3ef339 DE |
1074 | "\ |
1075 | Return #t if the object is a valid <gdb:frame> object.\n\ | |
1076 | Frames become invalid when the inferior returns to its caller." }, | |
1077 | ||
72e02483 | 1078 | { "frame-name", 1, 0, 0, as_a_scm_t_subr (gdbscm_frame_name), |
ed3ef339 DE |
1079 | "\ |
1080 | Return the name of the function corresponding to this frame,\n\ | |
1081 | or #f if there is no function." }, | |
1082 | ||
72e02483 | 1083 | { "frame-arch", 1, 0, 0, as_a_scm_t_subr (gdbscm_frame_arch), |
ed3ef339 DE |
1084 | "\ |
1085 | Return the frame's architecture as a <gdb:arch> object." }, | |
1086 | ||
72e02483 | 1087 | { "frame-type", 1, 0, 0, as_a_scm_t_subr (gdbscm_frame_type), |
ed3ef339 DE |
1088 | "\ |
1089 | Return the frame type, namely one of the gdb:*_FRAME constants." }, | |
1090 | ||
72e02483 PA |
1091 | { "frame-unwind-stop-reason", 1, 0, 0, |
1092 | as_a_scm_t_subr (gdbscm_frame_unwind_stop_reason), | |
ed3ef339 DE |
1093 | "\ |
1094 | Return one of the gdb:FRAME_UNWIND_* constants explaining why\n\ | |
1095 | it's not possible to find frames older than this." }, | |
1096 | ||
72e02483 | 1097 | { "frame-pc", 1, 0, 0, as_a_scm_t_subr (gdbscm_frame_pc), |
ed3ef339 DE |
1098 | "\ |
1099 | Return the frame's resume address." }, | |
1100 | ||
72e02483 | 1101 | { "frame-block", 1, 0, 0, as_a_scm_t_subr (gdbscm_frame_block), |
ed3ef339 DE |
1102 | "\ |
1103 | Return the frame's code block, or #f if one cannot be found." }, | |
1104 | ||
72e02483 | 1105 | { "frame-function", 1, 0, 0, as_a_scm_t_subr (gdbscm_frame_function), |
ed3ef339 DE |
1106 | "\ |
1107 | Return the <gdb:symbol> for the function corresponding to this frame,\n\ | |
1108 | or #f if there isn't one." }, | |
1109 | ||
72e02483 | 1110 | { "frame-older", 1, 0, 0, as_a_scm_t_subr (gdbscm_frame_older), |
ed3ef339 DE |
1111 | "\ |
1112 | Return the frame immediately older (outer) to this frame,\n\ | |
1113 | or #f if there isn't one." }, | |
1114 | ||
72e02483 | 1115 | { "frame-newer", 1, 0, 0, as_a_scm_t_subr (gdbscm_frame_newer), |
ed3ef339 DE |
1116 | "\ |
1117 | Return the frame immediately newer (inner) to this frame,\n\ | |
1118 | or #f if there isn't one." }, | |
1119 | ||
72e02483 | 1120 | { "frame-sal", 1, 0, 0, as_a_scm_t_subr (gdbscm_frame_sal), |
ed3ef339 DE |
1121 | "\ |
1122 | Return the frame's symtab-and-line <gdb:sal> object." }, | |
1123 | ||
72e02483 | 1124 | { "frame-read-var", 2, 0, 1, as_a_scm_t_subr (gdbscm_frame_read_var), |
ed3ef339 DE |
1125 | "\ |
1126 | Return the value of the symbol in the frame.\n\ | |
1127 | \n\ | |
1128 | Arguments: <gdb:frame> <gdb:symbol>\n\ | |
dda83cd7 | 1129 | Or: <gdb:frame> string [#:block <gdb:block>]" }, |
ed3ef339 | 1130 | |
72e02483 PA |
1131 | { "frame-read-register", 2, 0, 0, |
1132 | as_a_scm_t_subr (gdbscm_frame_read_register), | |
f2983cc3 AW |
1133 | "\ |
1134 | Return the value of the register in the frame.\n\ | |
1135 | \n\ | |
1136 | Arguments: <gdb:frame> string" }, | |
1137 | ||
72e02483 | 1138 | { "frame-select", 1, 0, 0, as_a_scm_t_subr (gdbscm_frame_select), |
ed3ef339 DE |
1139 | "\ |
1140 | Select this frame." }, | |
1141 | ||
72e02483 | 1142 | { "newest-frame", 0, 0, 0, as_a_scm_t_subr (gdbscm_newest_frame), |
ed3ef339 DE |
1143 | "\ |
1144 | Return the newest frame." }, | |
1145 | ||
72e02483 | 1146 | { "selected-frame", 0, 0, 0, as_a_scm_t_subr (gdbscm_selected_frame), |
ed3ef339 DE |
1147 | "\ |
1148 | Return the selected frame." }, | |
1149 | ||
72e02483 PA |
1150 | { "unwind-stop-reason-string", 1, 0, 0, |
1151 | as_a_scm_t_subr (gdbscm_unwind_stop_reason_string), | |
ed3ef339 DE |
1152 | "\ |
1153 | Return a string explaining the unwind stop reason.\n\ | |
1154 | \n\ | |
1155 | Arguments: integer (the result of frame-unwind-stop-reason)" }, | |
1156 | ||
1157 | END_FUNCTIONS | |
1158 | }; | |
1159 | ||
1160 | void | |
1161 | gdbscm_initialize_frames (void) | |
1162 | { | |
1163 | frame_smob_tag | |
1164 | = gdbscm_make_smob_type (frame_smob_name, sizeof (frame_smob)); | |
ed3ef339 DE |
1165 | scm_set_smob_free (frame_smob_tag, frscm_free_frame_smob); |
1166 | scm_set_smob_print (frame_smob_tag, frscm_print_frame_smob); | |
1167 | ||
1168 | gdbscm_define_integer_constants (frame_integer_constants, 1); | |
1169 | gdbscm_define_functions (frame_functions, 1); | |
1170 | ||
1171 | block_keyword = scm_from_latin1_keyword ("block"); | |
880ae75a | 1172 | } |
ed3ef339 | 1173 | |
880ae75a AB |
1174 | void _initialize_scm_frame (); |
1175 | void | |
1176 | _initialize_scm_frame () | |
1177 | { | |
ed3ef339 DE |
1178 | /* Register an inferior "free" callback so we can properly |
1179 | invalidate frames when an inferior file is about to be deleted. */ | |
1180 | frscm_inferior_data_key | |
1181 | = register_inferior_data_with_cleanup (NULL, frscm_del_inferior_frames); | |
1182 | } |