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ed3ef339 DE |
1 | /* Scheme interface to values. |
2 | ||
e2882c85 | 3 | Copyright (C) 2008-2018 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 "arch-utils.h" | |
25 | #include "charset.h" | |
26 | #include "cp-abi.h" | |
14ad9311 | 27 | #include "target-float.h" |
ed3ef339 DE |
28 | #include "infcall.h" |
29 | #include "symtab.h" /* Needed by language.h. */ | |
30 | #include "language.h" | |
31 | #include "valprint.h" | |
32 | #include "value.h" | |
33 | #include "guile-internal.h" | |
34 | ||
35 | /* The <gdb:value> smob. */ | |
36 | ||
37 | typedef struct _value_smob | |
38 | { | |
39 | /* This always appears first. */ | |
40 | gdb_smob base; | |
41 | ||
42 | /* Doubly linked list of values in values_in_scheme. | |
43 | IWBN to use a chained_gdb_smob instead, which is doable, it just requires | |
44 | a bit more casting than normal. */ | |
45 | struct _value_smob *next; | |
46 | struct _value_smob *prev; | |
47 | ||
48 | struct value *value; | |
49 | ||
50 | /* These are cached here to avoid making multiple copies of them. | |
51 | Plus computing the dynamic_type can be a bit expensive. | |
52 | We use #f to indicate that the value doesn't exist (e.g. value doesn't | |
53 | have an address), so we need another value to indicate that we haven't | |
54 | computed the value yet. For this we use SCM_UNDEFINED. */ | |
55 | SCM address; | |
56 | SCM type; | |
57 | SCM dynamic_type; | |
58 | } value_smob; | |
59 | ||
60 | static const char value_smob_name[] = "gdb:value"; | |
61 | ||
62 | /* The tag Guile knows the value smob by. */ | |
63 | static scm_t_bits value_smob_tag; | |
64 | ||
65 | /* List of all values which are currently exposed to Scheme. It is | |
66 | maintained so that when an objfile is discarded, preserve_values | |
67 | can copy the values' types if needed. */ | |
68 | static value_smob *values_in_scheme; | |
69 | ||
70 | /* Keywords used by Scheme procedures in this file. */ | |
71 | static SCM type_keyword; | |
72 | static SCM encoding_keyword; | |
73 | static SCM errors_keyword; | |
74 | static SCM length_keyword; | |
75 | ||
76 | /* Possible #:errors values. */ | |
77 | static SCM error_symbol; | |
78 | static SCM escape_symbol; | |
79 | static SCM substitute_symbol; | |
80 | \f | |
81 | /* Administrivia for value smobs. */ | |
82 | ||
83 | /* Iterate over all the <gdb:value> objects, calling preserve_one_value on | |
84 | each. | |
85 | This is the extension_language_ops.preserve_values "method". */ | |
86 | ||
87 | void | |
88 | gdbscm_preserve_values (const struct extension_language_defn *extlang, | |
89 | struct objfile *objfile, htab_t copied_types) | |
90 | { | |
91 | value_smob *iter; | |
92 | ||
93 | for (iter = values_in_scheme; iter; iter = iter->next) | |
94 | preserve_one_value (iter->value, objfile, copied_types); | |
95 | } | |
96 | ||
97 | /* Helper to add a value_smob to the global list. */ | |
98 | ||
99 | static void | |
100 | vlscm_remember_scheme_value (value_smob *v_smob) | |
101 | { | |
102 | v_smob->next = values_in_scheme; | |
103 | if (v_smob->next) | |
104 | v_smob->next->prev = v_smob; | |
105 | v_smob->prev = NULL; | |
106 | values_in_scheme = v_smob; | |
107 | } | |
108 | ||
109 | /* Helper to remove a value_smob from the global list. */ | |
110 | ||
111 | static void | |
112 | vlscm_forget_value_smob (value_smob *v_smob) | |
113 | { | |
114 | /* Remove SELF from the global list. */ | |
115 | if (v_smob->prev) | |
116 | v_smob->prev->next = v_smob->next; | |
117 | else | |
118 | { | |
119 | gdb_assert (values_in_scheme == v_smob); | |
120 | values_in_scheme = v_smob->next; | |
121 | } | |
122 | if (v_smob->next) | |
123 | v_smob->next->prev = v_smob->prev; | |
124 | } | |
125 | ||
ed3ef339 DE |
126 | /* The smob "free" function for <gdb:value>. */ |
127 | ||
128 | static size_t | |
129 | vlscm_free_value_smob (SCM self) | |
130 | { | |
131 | value_smob *v_smob = (value_smob *) SCM_SMOB_DATA (self); | |
132 | ||
133 | vlscm_forget_value_smob (v_smob); | |
134 | value_free (v_smob->value); | |
135 | ||
136 | return 0; | |
137 | } | |
138 | ||
139 | /* The smob "print" function for <gdb:value>. */ | |
140 | ||
141 | static int | |
142 | vlscm_print_value_smob (SCM self, SCM port, scm_print_state *pstate) | |
143 | { | |
144 | value_smob *v_smob = (value_smob *) SCM_SMOB_DATA (self); | |
ed3ef339 | 145 | struct value_print_options opts; |
ed3ef339 DE |
146 | |
147 | if (pstate->writingp) | |
148 | gdbscm_printf (port, "#<%s ", value_smob_name); | |
149 | ||
150 | get_user_print_options (&opts); | |
151 | opts.deref_ref = 0; | |
152 | ||
153 | /* pstate->writingp = zero if invoked by display/~A, and nonzero if | |
154 | invoked by write/~S. What to do here may need to evolve. | |
155 | IWBN if we could pass an argument to format that would we could use | |
156 | instead of writingp. */ | |
157 | opts.raw = !!pstate->writingp; | |
158 | ||
492d29ea | 159 | TRY |
ed3ef339 | 160 | { |
d7e74731 | 161 | string_file stb; |
ed3ef339 | 162 | |
d7e74731 PA |
163 | common_val_print (v_smob->value, &stb, 0, &opts, current_language); |
164 | scm_puts (stb.c_str (), port); | |
ed3ef339 | 165 | } |
492d29ea PA |
166 | CATCH (except, RETURN_MASK_ALL) |
167 | { | |
168 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
169 | } | |
170 | END_CATCH | |
ed3ef339 | 171 | |
ed3ef339 DE |
172 | if (pstate->writingp) |
173 | scm_puts (">", port); | |
174 | ||
175 | scm_remember_upto_here_1 (self); | |
176 | ||
177 | /* Non-zero means success. */ | |
178 | return 1; | |
179 | } | |
180 | ||
181 | /* The smob "equalp" function for <gdb:value>. */ | |
182 | ||
183 | static SCM | |
184 | vlscm_equal_p_value_smob (SCM v1, SCM v2) | |
185 | { | |
186 | const value_smob *v1_smob = (value_smob *) SCM_SMOB_DATA (v1); | |
187 | const value_smob *v2_smob = (value_smob *) SCM_SMOB_DATA (v2); | |
188 | int result = 0; | |
ed3ef339 | 189 | |
492d29ea | 190 | TRY |
ed3ef339 DE |
191 | { |
192 | result = value_equal (v1_smob->value, v2_smob->value); | |
193 | } | |
492d29ea PA |
194 | CATCH (except, RETURN_MASK_ALL) |
195 | { | |
196 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
197 | } | |
198 | END_CATCH | |
ed3ef339 DE |
199 | |
200 | return scm_from_bool (result); | |
201 | } | |
202 | ||
203 | /* Low level routine to create a <gdb:value> object. */ | |
204 | ||
205 | static SCM | |
206 | vlscm_make_value_smob (void) | |
207 | { | |
208 | value_smob *v_smob = (value_smob *) | |
209 | scm_gc_malloc (sizeof (value_smob), value_smob_name); | |
210 | SCM v_scm; | |
211 | ||
212 | /* These must be filled in by the caller. */ | |
213 | v_smob->value = NULL; | |
214 | v_smob->prev = NULL; | |
215 | v_smob->next = NULL; | |
216 | ||
217 | /* These are lazily computed. */ | |
218 | v_smob->address = SCM_UNDEFINED; | |
219 | v_smob->type = SCM_UNDEFINED; | |
220 | v_smob->dynamic_type = SCM_UNDEFINED; | |
221 | ||
222 | v_scm = scm_new_smob (value_smob_tag, (scm_t_bits) v_smob); | |
223 | gdbscm_init_gsmob (&v_smob->base); | |
224 | ||
225 | return v_scm; | |
226 | } | |
227 | ||
228 | /* Return non-zero if SCM is a <gdb:value> object. */ | |
229 | ||
230 | int | |
231 | vlscm_is_value (SCM scm) | |
232 | { | |
233 | return SCM_SMOB_PREDICATE (value_smob_tag, scm); | |
234 | } | |
235 | ||
236 | /* (value? object) -> boolean */ | |
237 | ||
238 | static SCM | |
239 | gdbscm_value_p (SCM scm) | |
240 | { | |
241 | return scm_from_bool (vlscm_is_value (scm)); | |
242 | } | |
243 | ||
244 | /* Create a new <gdb:value> object that encapsulates VALUE. | |
245 | The value is released from the all_values chain so its lifetime is not | |
246 | bound to the execution of a command. */ | |
247 | ||
248 | SCM | |
249 | vlscm_scm_from_value (struct value *value) | |
250 | { | |
251 | /* N.B. It's important to not cause any side-effects until we know the | |
252 | conversion worked. */ | |
253 | SCM v_scm = vlscm_make_value_smob (); | |
254 | value_smob *v_smob = (value_smob *) SCM_SMOB_DATA (v_scm); | |
255 | ||
256 | v_smob->value = value; | |
257 | release_value_or_incref (value); | |
258 | vlscm_remember_scheme_value (v_smob); | |
259 | ||
260 | return v_scm; | |
261 | } | |
262 | ||
263 | /* Returns the <gdb:value> object in SELF. | |
264 | Throws an exception if SELF is not a <gdb:value> object. */ | |
265 | ||
266 | static SCM | |
267 | vlscm_get_value_arg_unsafe (SCM self, int arg_pos, const char *func_name) | |
268 | { | |
269 | SCM_ASSERT_TYPE (vlscm_is_value (self), self, arg_pos, func_name, | |
270 | value_smob_name); | |
271 | ||
272 | return self; | |
273 | } | |
274 | ||
275 | /* Returns a pointer to the value smob of SELF. | |
276 | Throws an exception if SELF is not a <gdb:value> object. */ | |
277 | ||
278 | static value_smob * | |
279 | vlscm_get_value_smob_arg_unsafe (SCM self, int arg_pos, const char *func_name) | |
280 | { | |
281 | SCM v_scm = vlscm_get_value_arg_unsafe (self, arg_pos, func_name); | |
282 | value_smob *v_smob = (value_smob *) SCM_SMOB_DATA (v_scm); | |
283 | ||
284 | return v_smob; | |
285 | } | |
286 | ||
287 | /* Return the value field of V_SCM, an object of type <gdb:value>. | |
288 | This exists so that we don't have to export the struct's contents. */ | |
289 | ||
290 | struct value * | |
291 | vlscm_scm_to_value (SCM v_scm) | |
292 | { | |
293 | value_smob *v_smob; | |
294 | ||
295 | gdb_assert (vlscm_is_value (v_scm)); | |
296 | v_smob = (value_smob *) SCM_SMOB_DATA (v_scm); | |
297 | return v_smob->value; | |
298 | } | |
299 | \f | |
300 | /* Value methods. */ | |
301 | ||
302 | /* (make-value x [#:type type]) -> <gdb:value> */ | |
303 | ||
304 | static SCM | |
305 | gdbscm_make_value (SCM x, SCM rest) | |
306 | { | |
307 | struct gdbarch *gdbarch = get_current_arch (); | |
308 | const struct language_defn *language = current_language; | |
309 | const SCM keywords[] = { type_keyword, SCM_BOOL_F }; | |
310 | int type_arg_pos = -1; | |
311 | SCM type_scm = SCM_UNDEFINED; | |
312 | SCM except_scm, result; | |
313 | type_smob *t_smob; | |
314 | struct type *type = NULL; | |
315 | struct value *value; | |
316 | struct cleanup *cleanups; | |
317 | ||
318 | gdbscm_parse_function_args (FUNC_NAME, SCM_ARG2, keywords, "#O", rest, | |
319 | &type_arg_pos, &type_scm); | |
320 | ||
321 | if (type_arg_pos > 0) | |
322 | { | |
323 | t_smob = tyscm_get_type_smob_arg_unsafe (type_scm, type_arg_pos, | |
324 | FUNC_NAME); | |
325 | type = tyscm_type_smob_type (t_smob); | |
326 | } | |
327 | ||
328 | cleanups = make_cleanup_value_free_to_mark (value_mark ()); | |
329 | ||
330 | value = vlscm_convert_typed_value_from_scheme (FUNC_NAME, SCM_ARG1, x, | |
331 | type_arg_pos, type_scm, type, | |
332 | &except_scm, | |
333 | gdbarch, language); | |
334 | if (value == NULL) | |
335 | { | |
336 | do_cleanups (cleanups); | |
337 | gdbscm_throw (except_scm); | |
338 | } | |
339 | ||
340 | result = vlscm_scm_from_value (value); | |
341 | ||
342 | do_cleanups (cleanups); | |
343 | ||
344 | if (gdbscm_is_exception (result)) | |
345 | gdbscm_throw (result); | |
346 | return result; | |
347 | } | |
348 | ||
349 | /* (make-lazy-value <gdb:type> address) -> <gdb:value> */ | |
350 | ||
351 | static SCM | |
352 | gdbscm_make_lazy_value (SCM type_scm, SCM address_scm) | |
353 | { | |
354 | type_smob *t_smob; | |
355 | struct type *type; | |
356 | ULONGEST address; | |
357 | struct value *value = NULL; | |
358 | SCM result; | |
359 | struct cleanup *cleanups; | |
ed3ef339 DE |
360 | |
361 | t_smob = tyscm_get_type_smob_arg_unsafe (type_scm, SCM_ARG1, FUNC_NAME); | |
362 | type = tyscm_type_smob_type (t_smob); | |
363 | ||
364 | gdbscm_parse_function_args (FUNC_NAME, SCM_ARG2, NULL, "U", | |
365 | address_scm, &address); | |
366 | ||
367 | cleanups = make_cleanup_value_free_to_mark (value_mark ()); | |
368 | ||
369 | /* There's no (current) need to wrap this in a TRY_CATCH, but for consistency | |
370 | and future-proofing we do. */ | |
492d29ea | 371 | TRY |
ed3ef339 DE |
372 | { |
373 | value = value_from_contents_and_address (type, NULL, address); | |
374 | } | |
492d29ea PA |
375 | CATCH (except, RETURN_MASK_ALL) |
376 | { | |
377 | GDBSCM_HANDLE_GDB_EXCEPTION_WITH_CLEANUPS (except, cleanups); | |
378 | } | |
379 | END_CATCH | |
ed3ef339 DE |
380 | |
381 | result = vlscm_scm_from_value (value); | |
382 | ||
383 | do_cleanups (cleanups); | |
384 | ||
385 | if (gdbscm_is_exception (result)) | |
386 | gdbscm_throw (result); | |
387 | return result; | |
388 | } | |
389 | ||
390 | /* (value-optimized-out? <gdb:value>) -> boolean */ | |
391 | ||
392 | static SCM | |
393 | gdbscm_value_optimized_out_p (SCM self) | |
394 | { | |
395 | value_smob *v_smob | |
396 | = vlscm_get_value_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
397 | struct value *value = v_smob->value; | |
398 | int opt = 0; | |
ed3ef339 | 399 | |
492d29ea | 400 | TRY |
ed3ef339 DE |
401 | { |
402 | opt = value_optimized_out (value); | |
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 (opt); | |
411 | } | |
412 | ||
413 | /* (value-address <gdb:value>) -> integer | |
414 | Returns #f if the value doesn't have one. */ | |
415 | ||
416 | static SCM | |
417 | gdbscm_value_address (SCM self) | |
418 | { | |
419 | value_smob *v_smob | |
420 | = vlscm_get_value_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
421 | struct value *value = v_smob->value; | |
422 | ||
423 | if (SCM_UNBNDP (v_smob->address)) | |
424 | { | |
ed3ef339 DE |
425 | struct cleanup *cleanup |
426 | = make_cleanup_value_free_to_mark (value_mark ()); | |
432ae719 | 427 | SCM address = SCM_BOOL_F; |
ed3ef339 | 428 | |
492d29ea | 429 | TRY |
ed3ef339 | 430 | { |
432ae719 | 431 | address = vlscm_scm_from_value (value_addr (value)); |
ed3ef339 | 432 | } |
492d29ea PA |
433 | CATCH (except, RETURN_MASK_ALL) |
434 | { | |
492d29ea PA |
435 | } |
436 | END_CATCH | |
437 | ||
ed3ef339 DE |
438 | do_cleanups (cleanup); |
439 | ||
440 | if (gdbscm_is_exception (address)) | |
441 | gdbscm_throw (address); | |
442 | ||
443 | v_smob->address = address; | |
444 | } | |
445 | ||
446 | return v_smob->address; | |
447 | } | |
448 | ||
449 | /* (value-dereference <gdb:value>) -> <gdb:value> | |
450 | Given a value of a pointer type, apply the C unary * operator to it. */ | |
451 | ||
452 | static SCM | |
453 | gdbscm_value_dereference (SCM self) | |
454 | { | |
455 | value_smob *v_smob | |
456 | = vlscm_get_value_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
457 | struct value *value = v_smob->value; | |
458 | SCM result; | |
459 | struct value *res_val = NULL; | |
460 | struct cleanup *cleanups; | |
ed3ef339 DE |
461 | |
462 | cleanups = make_cleanup_value_free_to_mark (value_mark ()); | |
463 | ||
492d29ea | 464 | TRY |
ed3ef339 DE |
465 | { |
466 | res_val = value_ind (value); | |
467 | } | |
492d29ea PA |
468 | CATCH (except, RETURN_MASK_ALL) |
469 | { | |
470 | GDBSCM_HANDLE_GDB_EXCEPTION_WITH_CLEANUPS (except, cleanups); | |
471 | } | |
472 | END_CATCH | |
ed3ef339 DE |
473 | |
474 | result = vlscm_scm_from_value (res_val); | |
475 | ||
476 | do_cleanups (cleanups); | |
477 | ||
478 | if (gdbscm_is_exception (result)) | |
479 | gdbscm_throw (result); | |
480 | ||
481 | return result; | |
482 | } | |
483 | ||
484 | /* (value-referenced-value <gdb:value>) -> <gdb:value> | |
485 | Given a value of a reference type, return the value referenced. | |
486 | The difference between this function and gdbscm_value_dereference is that | |
487 | the latter applies * unary operator to a value, which need not always | |
488 | result in the value referenced. | |
489 | For example, for a value which is a reference to an 'int' pointer ('int *'), | |
490 | gdbscm_value_dereference will result in a value of type 'int' while | |
491 | gdbscm_value_referenced_value will result in a value of type 'int *'. */ | |
492 | ||
493 | static SCM | |
494 | gdbscm_value_referenced_value (SCM self) | |
495 | { | |
496 | value_smob *v_smob | |
497 | = vlscm_get_value_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
498 | struct value *value = v_smob->value; | |
499 | SCM result; | |
500 | struct value *res_val = NULL; | |
501 | struct cleanup *cleanups; | |
ed3ef339 DE |
502 | |
503 | cleanups = make_cleanup_value_free_to_mark (value_mark ()); | |
504 | ||
492d29ea | 505 | TRY |
ed3ef339 DE |
506 | { |
507 | switch (TYPE_CODE (check_typedef (value_type (value)))) | |
508 | { | |
509 | case TYPE_CODE_PTR: | |
510 | res_val = value_ind (value); | |
511 | break; | |
512 | case TYPE_CODE_REF: | |
513 | res_val = coerce_ref (value); | |
514 | break; | |
515 | default: | |
516 | error (_("Trying to get the referenced value from a value which is" | |
517 | " neither a pointer nor a reference")); | |
518 | } | |
519 | } | |
492d29ea PA |
520 | CATCH (except, RETURN_MASK_ALL) |
521 | { | |
522 | GDBSCM_HANDLE_GDB_EXCEPTION_WITH_CLEANUPS (except, cleanups); | |
523 | } | |
524 | END_CATCH | |
ed3ef339 DE |
525 | |
526 | result = vlscm_scm_from_value (res_val); | |
527 | ||
528 | do_cleanups (cleanups); | |
529 | ||
530 | if (gdbscm_is_exception (result)) | |
531 | gdbscm_throw (result); | |
532 | ||
533 | return result; | |
534 | } | |
535 | ||
536 | /* (value-type <gdb:value>) -> <gdb:type> */ | |
537 | ||
538 | static SCM | |
539 | gdbscm_value_type (SCM self) | |
540 | { | |
541 | value_smob *v_smob | |
542 | = vlscm_get_value_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
543 | struct value *value = v_smob->value; | |
544 | ||
545 | if (SCM_UNBNDP (v_smob->type)) | |
546 | v_smob->type = tyscm_scm_from_type (value_type (value)); | |
547 | ||
548 | return v_smob->type; | |
549 | } | |
550 | ||
551 | /* (value-dynamic-type <gdb:value>) -> <gdb:type> */ | |
552 | ||
553 | static SCM | |
554 | gdbscm_value_dynamic_type (SCM self) | |
555 | { | |
556 | value_smob *v_smob | |
557 | = vlscm_get_value_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
558 | struct value *value = v_smob->value; | |
559 | struct type *type = NULL; | |
ed3ef339 | 560 | |
1390d0ef | 561 | if (! SCM_UNBNDP (v_smob->dynamic_type)) |
ed3ef339 DE |
562 | return v_smob->dynamic_type; |
563 | ||
492d29ea | 564 | TRY |
ed3ef339 DE |
565 | { |
566 | struct cleanup *cleanup | |
567 | = make_cleanup_value_free_to_mark (value_mark ()); | |
568 | ||
569 | type = value_type (value); | |
f168693b | 570 | type = check_typedef (type); |
ed3ef339 DE |
571 | |
572 | if (((TYPE_CODE (type) == TYPE_CODE_PTR) | |
573 | || (TYPE_CODE (type) == TYPE_CODE_REF)) | |
4753d33b | 574 | && (TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_STRUCT)) |
ed3ef339 DE |
575 | { |
576 | struct value *target; | |
577 | int was_pointer = TYPE_CODE (type) == TYPE_CODE_PTR; | |
578 | ||
0be03e84 DE |
579 | if (was_pointer) |
580 | target = value_ind (value); | |
581 | else | |
582 | target = coerce_ref (value); | |
ed3ef339 DE |
583 | type = value_rtti_type (target, NULL, NULL, NULL); |
584 | ||
585 | if (type) | |
586 | { | |
587 | if (was_pointer) | |
588 | type = lookup_pointer_type (type); | |
589 | else | |
3b224330 | 590 | type = lookup_lvalue_reference_type (type); |
ed3ef339 DE |
591 | } |
592 | } | |
4753d33b | 593 | else if (TYPE_CODE (type) == TYPE_CODE_STRUCT) |
ed3ef339 DE |
594 | type = value_rtti_type (value, NULL, NULL, NULL); |
595 | else | |
596 | { | |
597 | /* Re-use object's static type. */ | |
598 | type = NULL; | |
599 | } | |
600 | ||
601 | do_cleanups (cleanup); | |
602 | } | |
492d29ea PA |
603 | CATCH (except, RETURN_MASK_ALL) |
604 | { | |
605 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
606 | } | |
607 | END_CATCH | |
ed3ef339 DE |
608 | |
609 | if (type == NULL) | |
610 | v_smob->dynamic_type = gdbscm_value_type (self); | |
611 | else | |
612 | v_smob->dynamic_type = tyscm_scm_from_type (type); | |
613 | ||
614 | return v_smob->dynamic_type; | |
615 | } | |
616 | ||
617 | /* A helper function that implements the various cast operators. */ | |
618 | ||
619 | static SCM | |
620 | vlscm_do_cast (SCM self, SCM type_scm, enum exp_opcode op, | |
621 | const char *func_name) | |
622 | { | |
623 | value_smob *v_smob | |
624 | = vlscm_get_value_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
625 | struct value *value = v_smob->value; | |
626 | type_smob *t_smob | |
627 | = tyscm_get_type_smob_arg_unsafe (type_scm, SCM_ARG2, FUNC_NAME); | |
628 | struct type *type = tyscm_type_smob_type (t_smob); | |
629 | SCM result; | |
630 | struct value *res_val = NULL; | |
631 | struct cleanup *cleanups; | |
ed3ef339 DE |
632 | |
633 | cleanups = make_cleanup_value_free_to_mark (value_mark ()); | |
634 | ||
492d29ea | 635 | TRY |
ed3ef339 DE |
636 | { |
637 | if (op == UNOP_DYNAMIC_CAST) | |
638 | res_val = value_dynamic_cast (type, value); | |
639 | else if (op == UNOP_REINTERPRET_CAST) | |
640 | res_val = value_reinterpret_cast (type, value); | |
641 | else | |
642 | { | |
643 | gdb_assert (op == UNOP_CAST); | |
644 | res_val = value_cast (type, value); | |
645 | } | |
646 | } | |
492d29ea PA |
647 | CATCH (except, RETURN_MASK_ALL) |
648 | { | |
649 | GDBSCM_HANDLE_GDB_EXCEPTION_WITH_CLEANUPS (except, cleanups); | |
650 | } | |
651 | END_CATCH | |
ed3ef339 DE |
652 | |
653 | gdb_assert (res_val != NULL); | |
654 | result = vlscm_scm_from_value (res_val); | |
655 | ||
656 | do_cleanups (cleanups); | |
657 | ||
658 | if (gdbscm_is_exception (result)) | |
659 | gdbscm_throw (result); | |
660 | ||
661 | return result; | |
662 | } | |
663 | ||
664 | /* (value-cast <gdb:value> <gdb:type>) -> <gdb:value> */ | |
665 | ||
666 | static SCM | |
667 | gdbscm_value_cast (SCM self, SCM new_type) | |
668 | { | |
669 | return vlscm_do_cast (self, new_type, UNOP_CAST, FUNC_NAME); | |
670 | } | |
671 | ||
672 | /* (value-dynamic-cast <gdb:value> <gdb:type>) -> <gdb:value> */ | |
673 | ||
674 | static SCM | |
675 | gdbscm_value_dynamic_cast (SCM self, SCM new_type) | |
676 | { | |
677 | return vlscm_do_cast (self, new_type, UNOP_DYNAMIC_CAST, FUNC_NAME); | |
678 | } | |
679 | ||
680 | /* (value-reinterpret-cast <gdb:value> <gdb:type>) -> <gdb:value> */ | |
681 | ||
682 | static SCM | |
683 | gdbscm_value_reinterpret_cast (SCM self, SCM new_type) | |
684 | { | |
685 | return vlscm_do_cast (self, new_type, UNOP_REINTERPRET_CAST, FUNC_NAME); | |
686 | } | |
687 | ||
688 | /* (value-field <gdb:value> string) -> <gdb:value> | |
689 | Given string name of an element inside structure, return its <gdb:value> | |
690 | object. */ | |
691 | ||
692 | static SCM | |
693 | gdbscm_value_field (SCM self, SCM field_scm) | |
694 | { | |
695 | value_smob *v_smob | |
696 | = vlscm_get_value_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
697 | struct value *value = v_smob->value; | |
698 | char *field = NULL; | |
699 | struct value *res_val = NULL; | |
700 | SCM result; | |
701 | struct cleanup *cleanups; | |
ed3ef339 DE |
702 | |
703 | SCM_ASSERT_TYPE (scm_is_string (field_scm), field_scm, SCM_ARG2, FUNC_NAME, | |
704 | _("string")); | |
705 | ||
706 | cleanups = make_cleanup_value_free_to_mark (value_mark ()); | |
707 | ||
708 | field = gdbscm_scm_to_c_string (field_scm); | |
709 | make_cleanup (xfree, field); | |
710 | ||
492d29ea | 711 | TRY |
ed3ef339 DE |
712 | { |
713 | struct value *tmp = value; | |
714 | ||
5996220c DE |
715 | res_val = value_struct_elt (&tmp, NULL, field, NULL, |
716 | "struct/class/union"); | |
ed3ef339 | 717 | } |
492d29ea PA |
718 | CATCH (except, RETURN_MASK_ALL) |
719 | { | |
720 | GDBSCM_HANDLE_GDB_EXCEPTION_WITH_CLEANUPS (except, cleanups); | |
721 | } | |
722 | END_CATCH | |
ed3ef339 DE |
723 | |
724 | gdb_assert (res_val != NULL); | |
725 | result = vlscm_scm_from_value (res_val); | |
726 | ||
727 | do_cleanups (cleanups); | |
728 | ||
729 | if (gdbscm_is_exception (result)) | |
730 | gdbscm_throw (result); | |
731 | ||
732 | return result; | |
733 | } | |
734 | ||
735 | /* (value-subscript <gdb:value> integer|<gdb:value>) -> <gdb:value> | |
736 | Return the specified value in an array. */ | |
737 | ||
738 | static SCM | |
739 | gdbscm_value_subscript (SCM self, SCM index_scm) | |
740 | { | |
741 | value_smob *v_smob | |
742 | = vlscm_get_value_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
743 | struct value *value = v_smob->value; | |
744 | struct value *index = NULL; | |
745 | struct value *res_val = NULL; | |
746 | struct type *type = value_type (value); | |
747 | struct gdbarch *gdbarch; | |
748 | SCM result, except_scm; | |
749 | struct cleanup *cleanups; | |
ed3ef339 DE |
750 | |
751 | /* The sequencing here, as everywhere else, is important. | |
752 | We can't have existing cleanups when a Scheme exception is thrown. */ | |
753 | ||
754 | SCM_ASSERT (type != NULL, self, SCM_ARG2, FUNC_NAME); | |
755 | gdbarch = get_type_arch (type); | |
756 | ||
757 | cleanups = make_cleanup_value_free_to_mark (value_mark ()); | |
758 | ||
759 | index = vlscm_convert_value_from_scheme (FUNC_NAME, SCM_ARG2, index_scm, | |
760 | &except_scm, | |
761 | gdbarch, current_language); | |
762 | if (index == NULL) | |
763 | { | |
764 | do_cleanups (cleanups); | |
765 | gdbscm_throw (except_scm); | |
766 | } | |
767 | ||
492d29ea | 768 | TRY |
ed3ef339 DE |
769 | { |
770 | struct value *tmp = value; | |
771 | ||
772 | /* Assume we are attempting an array access, and let the value code | |
773 | throw an exception if the index has an invalid type. | |
774 | Check the value's type is something that can be accessed via | |
775 | a subscript. */ | |
776 | tmp = coerce_ref (tmp); | |
777 | type = check_typedef (value_type (tmp)); | |
778 | if (TYPE_CODE (type) != TYPE_CODE_ARRAY | |
779 | && TYPE_CODE (type) != TYPE_CODE_PTR) | |
780 | error (_("Cannot subscript requested type")); | |
781 | ||
782 | res_val = value_subscript (tmp, value_as_long (index)); | |
783 | } | |
492d29ea PA |
784 | CATCH (except, RETURN_MASK_ALL) |
785 | { | |
786 | GDBSCM_HANDLE_GDB_EXCEPTION_WITH_CLEANUPS (except, cleanups); | |
787 | } | |
788 | END_CATCH | |
ed3ef339 DE |
789 | |
790 | gdb_assert (res_val != NULL); | |
791 | result = vlscm_scm_from_value (res_val); | |
792 | ||
793 | do_cleanups (cleanups); | |
794 | ||
795 | if (gdbscm_is_exception (result)) | |
796 | gdbscm_throw (result); | |
797 | ||
798 | return result; | |
799 | } | |
800 | ||
801 | /* (value-call <gdb:value> arg-list) -> <gdb:value> | |
802 | Perform an inferior function call on the value. */ | |
803 | ||
804 | static SCM | |
805 | gdbscm_value_call (SCM self, SCM args) | |
806 | { | |
807 | value_smob *v_smob | |
808 | = vlscm_get_value_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
809 | struct value *function = v_smob->value; | |
810 | struct value *mark = value_mark (); | |
811 | struct type *ftype = NULL; | |
812 | long args_count; | |
813 | struct value **vargs = NULL; | |
814 | SCM result = SCM_BOOL_F; | |
ed3ef339 | 815 | |
492d29ea | 816 | TRY |
ed3ef339 DE |
817 | { |
818 | ftype = check_typedef (value_type (function)); | |
819 | } | |
492d29ea PA |
820 | CATCH (except, RETURN_MASK_ALL) |
821 | { | |
822 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
823 | } | |
824 | END_CATCH | |
ed3ef339 DE |
825 | |
826 | SCM_ASSERT_TYPE (TYPE_CODE (ftype) == TYPE_CODE_FUNC, self, | |
827 | SCM_ARG1, FUNC_NAME, | |
828 | _("function (value of TYPE_CODE_FUNC)")); | |
829 | ||
830 | SCM_ASSERT_TYPE (gdbscm_is_true (scm_list_p (args)), args, | |
831 | SCM_ARG2, FUNC_NAME, _("list")); | |
832 | ||
833 | args_count = scm_ilength (args); | |
834 | if (args_count > 0) | |
835 | { | |
836 | struct gdbarch *gdbarch = get_current_arch (); | |
837 | const struct language_defn *language = current_language; | |
838 | SCM except_scm; | |
839 | long i; | |
840 | ||
8d749320 | 841 | vargs = XALLOCAVEC (struct value *, args_count); |
ed3ef339 DE |
842 | for (i = 0; i < args_count; i++) |
843 | { | |
844 | SCM arg = scm_car (args); | |
845 | ||
846 | vargs[i] = vlscm_convert_value_from_scheme (FUNC_NAME, | |
847 | GDBSCM_ARG_NONE, arg, | |
848 | &except_scm, | |
849 | gdbarch, language); | |
850 | if (vargs[i] == NULL) | |
851 | gdbscm_throw (except_scm); | |
852 | ||
853 | args = scm_cdr (args); | |
854 | } | |
855 | gdb_assert (gdbscm_is_true (scm_null_p (args))); | |
856 | } | |
857 | ||
492d29ea | 858 | TRY |
ed3ef339 DE |
859 | { |
860 | struct cleanup *cleanup = make_cleanup_value_free_to_mark (mark); | |
861 | struct value *return_value; | |
862 | ||
7022349d | 863 | return_value = call_function_by_hand (function, NULL, args_count, vargs); |
ed3ef339 DE |
864 | result = vlscm_scm_from_value (return_value); |
865 | do_cleanups (cleanup); | |
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 (gdbscm_is_exception (result)) | |
874 | gdbscm_throw (result); | |
875 | ||
876 | return result; | |
877 | } | |
878 | ||
879 | /* (value->bytevector <gdb:value>) -> bytevector */ | |
880 | ||
881 | static SCM | |
882 | gdbscm_value_to_bytevector (SCM self) | |
883 | { | |
884 | value_smob *v_smob | |
885 | = vlscm_get_value_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
886 | struct value *value = v_smob->value; | |
887 | struct type *type; | |
888 | size_t length = 0; | |
889 | const gdb_byte *contents = NULL; | |
890 | SCM bv; | |
ed3ef339 DE |
891 | |
892 | type = value_type (value); | |
893 | ||
492d29ea | 894 | TRY |
ed3ef339 | 895 | { |
f168693b | 896 | type = check_typedef (type); |
ed3ef339 DE |
897 | length = TYPE_LENGTH (type); |
898 | contents = value_contents (value); | |
899 | } | |
492d29ea PA |
900 | CATCH (except, RETURN_MASK_ALL) |
901 | { | |
902 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
903 | } | |
904 | END_CATCH | |
ed3ef339 DE |
905 | |
906 | bv = scm_c_make_bytevector (length); | |
907 | memcpy (SCM_BYTEVECTOR_CONTENTS (bv), contents, length); | |
908 | ||
909 | return bv; | |
910 | } | |
911 | ||
912 | /* Helper function to determine if a type is "int-like". */ | |
913 | ||
914 | static int | |
915 | is_intlike (struct type *type, int ptr_ok) | |
916 | { | |
917 | return (TYPE_CODE (type) == TYPE_CODE_INT | |
918 | || TYPE_CODE (type) == TYPE_CODE_ENUM | |
919 | || TYPE_CODE (type) == TYPE_CODE_BOOL | |
920 | || TYPE_CODE (type) == TYPE_CODE_CHAR | |
921 | || (ptr_ok && TYPE_CODE (type) == TYPE_CODE_PTR)); | |
922 | } | |
923 | ||
924 | /* (value->bool <gdb:value>) -> boolean | |
925 | Throws an error if the value is not integer-like. */ | |
926 | ||
927 | static SCM | |
928 | gdbscm_value_to_bool (SCM self) | |
929 | { | |
930 | value_smob *v_smob | |
931 | = vlscm_get_value_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
932 | struct value *value = v_smob->value; | |
933 | struct type *type; | |
934 | LONGEST l = 0; | |
ed3ef339 DE |
935 | |
936 | type = value_type (value); | |
937 | ||
492d29ea | 938 | TRY |
ed3ef339 | 939 | { |
f168693b | 940 | type = check_typedef (type); |
ed3ef339 | 941 | } |
492d29ea PA |
942 | CATCH (except, RETURN_MASK_ALL) |
943 | { | |
944 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
945 | } | |
946 | END_CATCH | |
ed3ef339 DE |
947 | |
948 | SCM_ASSERT_TYPE (is_intlike (type, 1), self, SCM_ARG1, FUNC_NAME, | |
949 | _("integer-like gdb value")); | |
950 | ||
492d29ea | 951 | TRY |
ed3ef339 DE |
952 | { |
953 | if (TYPE_CODE (type) == TYPE_CODE_PTR) | |
954 | l = value_as_address (value); | |
955 | else | |
956 | l = value_as_long (value); | |
957 | } | |
492d29ea PA |
958 | CATCH (except, RETURN_MASK_ALL) |
959 | { | |
960 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
961 | } | |
962 | END_CATCH | |
ed3ef339 DE |
963 | |
964 | return scm_from_bool (l != 0); | |
965 | } | |
966 | ||
967 | /* (value->integer <gdb:value>) -> integer | |
968 | Throws an error if the value is not integer-like. */ | |
969 | ||
970 | static SCM | |
971 | gdbscm_value_to_integer (SCM self) | |
972 | { | |
973 | value_smob *v_smob | |
974 | = vlscm_get_value_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
975 | struct value *value = v_smob->value; | |
976 | struct type *type; | |
977 | LONGEST l = 0; | |
ed3ef339 DE |
978 | |
979 | type = value_type (value); | |
980 | ||
492d29ea | 981 | TRY |
ed3ef339 | 982 | { |
f168693b | 983 | type = check_typedef (type); |
ed3ef339 | 984 | } |
492d29ea PA |
985 | CATCH (except, RETURN_MASK_ALL) |
986 | { | |
987 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
988 | } | |
989 | END_CATCH | |
ed3ef339 DE |
990 | |
991 | SCM_ASSERT_TYPE (is_intlike (type, 1), self, SCM_ARG1, FUNC_NAME, | |
992 | _("integer-like gdb value")); | |
993 | ||
492d29ea | 994 | TRY |
ed3ef339 DE |
995 | { |
996 | if (TYPE_CODE (type) == TYPE_CODE_PTR) | |
997 | l = value_as_address (value); | |
998 | else | |
999 | l = value_as_long (value); | |
1000 | } | |
492d29ea PA |
1001 | CATCH (except, RETURN_MASK_ALL) |
1002 | { | |
1003 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
1004 | } | |
1005 | END_CATCH | |
ed3ef339 DE |
1006 | |
1007 | if (TYPE_UNSIGNED (type)) | |
1008 | return gdbscm_scm_from_ulongest (l); | |
1009 | else | |
1010 | return gdbscm_scm_from_longest (l); | |
1011 | } | |
1012 | ||
1013 | /* (value->real <gdb:value>) -> real | |
1014 | Throws an error if the value is not a number. */ | |
1015 | ||
1016 | static SCM | |
1017 | gdbscm_value_to_real (SCM self) | |
1018 | { | |
1019 | value_smob *v_smob | |
1020 | = vlscm_get_value_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
1021 | struct value *value = v_smob->value; | |
1022 | struct type *type; | |
14ad9311 UW |
1023 | double d = 0; |
1024 | struct value *check = nullptr; | |
ed3ef339 DE |
1025 | |
1026 | type = value_type (value); | |
1027 | ||
492d29ea | 1028 | TRY |
ed3ef339 | 1029 | { |
f168693b | 1030 | type = check_typedef (type); |
ed3ef339 | 1031 | } |
492d29ea PA |
1032 | CATCH (except, RETURN_MASK_ALL) |
1033 | { | |
1034 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
1035 | } | |
1036 | END_CATCH | |
ed3ef339 DE |
1037 | |
1038 | SCM_ASSERT_TYPE (is_intlike (type, 0) || TYPE_CODE (type) == TYPE_CODE_FLT, | |
1039 | self, SCM_ARG1, FUNC_NAME, _("number")); | |
1040 | ||
492d29ea | 1041 | TRY |
ed3ef339 | 1042 | { |
14ad9311 UW |
1043 | if (is_floating_value (value)) |
1044 | { | |
1045 | d = target_float_to_host_double (value_contents (value), type); | |
1046 | check = allocate_value (type); | |
1047 | target_float_from_host_double (value_contents_raw (check), type, d); | |
1048 | } | |
1049 | else if (TYPE_UNSIGNED (type)) | |
1050 | { | |
1051 | d = (ULONGEST) value_as_long (value); | |
1052 | check = value_from_ulongest (type, (ULONGEST) d); | |
1053 | } | |
1054 | else | |
1055 | { | |
1056 | d = value_as_long (value); | |
1057 | check = value_from_longest (type, (LONGEST) d); | |
1058 | } | |
ed3ef339 | 1059 | } |
492d29ea PA |
1060 | CATCH (except, RETURN_MASK_ALL) |
1061 | { | |
1062 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
1063 | } | |
1064 | END_CATCH | |
ed3ef339 DE |
1065 | |
1066 | /* TODO: Is there a better way to check if the value fits? */ | |
14ad9311 | 1067 | if (!value_equal (value, check)) |
ed3ef339 DE |
1068 | gdbscm_out_of_range_error (FUNC_NAME, SCM_ARG1, self, |
1069 | _("number can't be converted to a double")); | |
1070 | ||
1071 | return scm_from_double (d); | |
1072 | } | |
1073 | ||
1074 | /* (value->string <gdb:value> | |
1075 | [#:encoding encoding] | |
1076 | [#:errors #f | 'error | 'substitute] | |
1077 | [#:length length]) | |
1078 | -> string | |
1079 | Return Unicode string with value's contents, which must be a string. | |
1080 | ||
1081 | If ENCODING is not given, the string is assumed to be encoded in | |
1082 | the target's charset. | |
1083 | ||
1084 | ERRORS is one of #f, 'error or 'substitute. | |
d2929fdc DE |
1085 | An error setting of #f means use the default, which is Guile's |
1086 | %default-port-conversion-strategy when using Guile >= 2.0.6, or 'error if | |
1087 | using an earlier version of Guile. Earlier versions do not properly | |
1088 | support obtaining the default port conversion strategy. | |
1089 | If the default is not one of 'error or 'substitute, 'substitute is used. | |
ed3ef339 DE |
1090 | An error setting of "error" causes an exception to be thrown if there's |
1091 | a decoding error. An error setting of "substitute" causes invalid | |
1092 | characters to be replaced with "?". | |
1093 | ||
1094 | If LENGTH is provided, only fetch string to the length provided. | |
1095 | LENGTH must be a Scheme integer, it can't be a <gdb:value> integer. */ | |
1096 | ||
1097 | static SCM | |
1098 | gdbscm_value_to_string (SCM self, SCM rest) | |
1099 | { | |
1100 | value_smob *v_smob | |
1101 | = vlscm_get_value_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
1102 | struct value *value = v_smob->value; | |
1103 | const SCM keywords[] = { | |
1104 | encoding_keyword, errors_keyword, length_keyword, SCM_BOOL_F | |
1105 | }; | |
1106 | int encoding_arg_pos = -1, errors_arg_pos = -1, length_arg_pos = -1; | |
1107 | char *encoding = NULL; | |
1108 | SCM errors = SCM_BOOL_F; | |
1109 | int length = -1; | |
1110 | gdb_byte *buffer = NULL; | |
1111 | const char *la_encoding = NULL; | |
1112 | struct type *char_type = NULL; | |
1113 | SCM result; | |
1114 | struct cleanup *cleanups; | |
ed3ef339 DE |
1115 | |
1116 | /* The sequencing here, as everywhere else, is important. | |
1117 | We can't have existing cleanups when a Scheme exception is thrown. */ | |
1118 | ||
1119 | gdbscm_parse_function_args (FUNC_NAME, SCM_ARG2, keywords, "#sOi", rest, | |
1120 | &encoding_arg_pos, &encoding, | |
1121 | &errors_arg_pos, &errors, | |
1122 | &length_arg_pos, &length); | |
1123 | ||
1124 | cleanups = make_cleanup (xfree, encoding); | |
1125 | ||
1126 | if (errors_arg_pos > 0 | |
1127 | && errors != SCM_BOOL_F | |
1128 | && !scm_is_eq (errors, error_symbol) | |
1129 | && !scm_is_eq (errors, substitute_symbol)) | |
1130 | { | |
1131 | SCM excp | |
1132 | = gdbscm_make_out_of_range_error (FUNC_NAME, errors_arg_pos, errors, | |
1133 | _("invalid error kind")); | |
1134 | ||
1135 | do_cleanups (cleanups); | |
1136 | gdbscm_throw (excp); | |
1137 | } | |
1138 | if (errors == SCM_BOOL_F) | |
d2929fdc DE |
1139 | { |
1140 | /* N.B. scm_port_conversion_strategy in Guile versions prior to 2.0.6 | |
1141 | will throw a Scheme error when passed #f. */ | |
1142 | if (gdbscm_guile_version_is_at_least (2, 0, 6)) | |
1143 | errors = scm_port_conversion_strategy (SCM_BOOL_F); | |
1144 | else | |
1145 | errors = error_symbol; | |
1146 | } | |
ed3ef339 DE |
1147 | /* We don't assume anything about the result of scm_port_conversion_strategy. |
1148 | From this point on, if errors is not 'errors, use 'substitute. */ | |
1149 | ||
492d29ea | 1150 | TRY |
ed3ef339 DE |
1151 | { |
1152 | LA_GET_STRING (value, &buffer, &length, &char_type, &la_encoding); | |
1153 | } | |
492d29ea PA |
1154 | CATCH (except, RETURN_MASK_ALL) |
1155 | { | |
1156 | GDBSCM_HANDLE_GDB_EXCEPTION_WITH_CLEANUPS (except, cleanups); | |
1157 | } | |
1158 | END_CATCH | |
ed3ef339 DE |
1159 | |
1160 | /* If errors is "error" scm_from_stringn may throw a Scheme exception. | |
1161 | Make sure we don't leak. This is done via scm_dynwind_begin, et.al. */ | |
1162 | discard_cleanups (cleanups); | |
1163 | ||
c6486df5 | 1164 | scm_dynwind_begin ((scm_t_dynwind_flags) 0); |
ed3ef339 DE |
1165 | |
1166 | gdbscm_dynwind_xfree (encoding); | |
1167 | gdbscm_dynwind_xfree (buffer); | |
1168 | ||
1169 | result = scm_from_stringn ((const char *) buffer, | |
1170 | length * TYPE_LENGTH (char_type), | |
1171 | (encoding != NULL && *encoding != '\0' | |
1172 | ? encoding | |
1173 | : la_encoding), | |
1174 | scm_is_eq (errors, error_symbol) | |
1175 | ? SCM_FAILED_CONVERSION_ERROR | |
1176 | : SCM_FAILED_CONVERSION_QUESTION_MARK); | |
1177 | ||
1178 | scm_dynwind_end (); | |
1179 | ||
1180 | return result; | |
1181 | } | |
1182 | ||
1183 | /* (value->lazy-string <gdb:value> [#:encoding encoding] [#:length length]) | |
1184 | -> <gdb:lazy-string> | |
1185 | Return a Scheme object representing a lazy_string_object type. | |
1186 | A lazy string is a pointer to a string with an optional encoding and length. | |
1187 | If ENCODING is not given, the target's charset is used. | |
a7c0469f DE |
1188 | If LENGTH is provided then the length parameter is set to LENGTH. |
1189 | Otherwise if the value is an array of known length then the array's length | |
1190 | is used. Otherwise the length will be set to -1 (meaning first null of | |
1191 | appropriate with). | |
ed3ef339 DE |
1192 | LENGTH must be a Scheme integer, it can't be a <gdb:value> integer. */ |
1193 | ||
1194 | static SCM | |
1195 | gdbscm_value_to_lazy_string (SCM self, SCM rest) | |
1196 | { | |
1197 | value_smob *v_smob | |
1198 | = vlscm_get_value_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
1199 | struct value *value = v_smob->value; | |
1200 | const SCM keywords[] = { encoding_keyword, length_keyword, SCM_BOOL_F }; | |
1201 | int encoding_arg_pos = -1, length_arg_pos = -1; | |
1202 | char *encoding = NULL; | |
1203 | int length = -1; | |
1204 | SCM result = SCM_BOOL_F; /* -Wall */ | |
1205 | struct cleanup *cleanups; | |
492d29ea | 1206 | struct gdb_exception except = exception_none; |
ed3ef339 DE |
1207 | |
1208 | /* The sequencing here, as everywhere else, is important. | |
1209 | We can't have existing cleanups when a Scheme exception is thrown. */ | |
1210 | ||
1211 | gdbscm_parse_function_args (FUNC_NAME, SCM_ARG2, keywords, "#si", rest, | |
1212 | &encoding_arg_pos, &encoding, | |
1213 | &length_arg_pos, &length); | |
1214 | ||
a7c0469f DE |
1215 | if (length < -1) |
1216 | { | |
1217 | gdbscm_out_of_range_error (FUNC_NAME, length_arg_pos, | |
1218 | scm_from_int (length), | |
1219 | _("invalid length")); | |
1220 | } | |
1221 | ||
ed3ef339 DE |
1222 | cleanups = make_cleanup (xfree, encoding); |
1223 | ||
492d29ea | 1224 | TRY |
ed3ef339 DE |
1225 | { |
1226 | struct cleanup *inner_cleanup | |
1227 | = make_cleanup_value_free_to_mark (value_mark ()); | |
a7c0469f DE |
1228 | struct type *type, *realtype; |
1229 | CORE_ADDR addr; | |
ed3ef339 | 1230 | |
a7c0469f DE |
1231 | type = value_type (value); |
1232 | realtype = check_typedef (type); | |
1233 | ||
1234 | switch (TYPE_CODE (realtype)) | |
1235 | { | |
1236 | case TYPE_CODE_ARRAY: | |
1237 | { | |
1238 | LONGEST array_length = -1; | |
1239 | LONGEST low_bound, high_bound; | |
1240 | ||
1241 | /* PR 20786: There's no way to specify an array of length zero. | |
1242 | Record a length of [0,-1] which is how Ada does it. Anything | |
1243 | we do is broken, but this one possible solution. */ | |
1244 | if (get_array_bounds (realtype, &low_bound, &high_bound)) | |
1245 | array_length = high_bound - low_bound + 1; | |
1246 | if (length == -1) | |
1247 | length = array_length; | |
1248 | else if (array_length == -1) | |
1249 | { | |
1250 | type = lookup_array_range_type (TYPE_TARGET_TYPE (realtype), | |
1251 | 0, length - 1); | |
1252 | } | |
1253 | else if (length != array_length) | |
1254 | { | |
1255 | /* We need to create a new array type with the | |
1256 | specified length. */ | |
1257 | if (length > array_length) | |
1258 | error (_("length is larger than array size")); | |
1259 | type = lookup_array_range_type (TYPE_TARGET_TYPE (type), | |
1260 | low_bound, | |
1261 | low_bound + length - 1); | |
1262 | } | |
1263 | addr = value_address (value); | |
1264 | break; | |
1265 | } | |
1266 | case TYPE_CODE_PTR: | |
1267 | /* If a length is specified we defer creating an array of the | |
1268 | specified width until we need to. */ | |
1269 | addr = value_as_address (value); | |
1270 | break; | |
1271 | default: | |
1272 | /* Should flag an error here. PR 20769. */ | |
1273 | addr = value_address (value); | |
1274 | break; | |
1275 | } | |
ed3ef339 | 1276 | |
a7c0469f | 1277 | result = lsscm_make_lazy_string (addr, length, encoding, type); |
ed3ef339 DE |
1278 | |
1279 | do_cleanups (inner_cleanup); | |
1280 | } | |
492d29ea PA |
1281 | CATCH (ex, RETURN_MASK_ALL) |
1282 | { | |
1283 | except = ex; | |
1284 | } | |
1285 | END_CATCH | |
1286 | ||
ed3ef339 DE |
1287 | do_cleanups (cleanups); |
1288 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
1289 | ||
1290 | if (gdbscm_is_exception (result)) | |
1291 | gdbscm_throw (result); | |
1292 | ||
1293 | return result; | |
1294 | } | |
1295 | ||
1296 | /* (value-lazy? <gdb:value>) -> boolean */ | |
1297 | ||
1298 | static SCM | |
1299 | gdbscm_value_lazy_p (SCM self) | |
1300 | { | |
1301 | value_smob *v_smob | |
1302 | = vlscm_get_value_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
1303 | struct value *value = v_smob->value; | |
1304 | ||
1305 | return scm_from_bool (value_lazy (value)); | |
1306 | } | |
1307 | ||
1308 | /* (value-fetch-lazy! <gdb:value>) -> unspecified */ | |
1309 | ||
1310 | static SCM | |
1311 | gdbscm_value_fetch_lazy_x (SCM self) | |
1312 | { | |
1313 | value_smob *v_smob | |
1314 | = vlscm_get_value_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
1315 | struct value *value = v_smob->value; | |
ed3ef339 | 1316 | |
492d29ea | 1317 | TRY |
ed3ef339 DE |
1318 | { |
1319 | if (value_lazy (value)) | |
1320 | value_fetch_lazy (value); | |
1321 | } | |
492d29ea PA |
1322 | CATCH (except, RETURN_MASK_ALL) |
1323 | { | |
1324 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
1325 | } | |
1326 | END_CATCH | |
ed3ef339 DE |
1327 | |
1328 | return SCM_UNSPECIFIED; | |
1329 | } | |
1330 | ||
1331 | /* (value-print <gdb:value>) -> string */ | |
1332 | ||
1333 | static SCM | |
1334 | gdbscm_value_print (SCM self) | |
1335 | { | |
1336 | value_smob *v_smob | |
1337 | = vlscm_get_value_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); | |
1338 | struct value *value = v_smob->value; | |
1339 | struct value_print_options opts; | |
ed3ef339 DE |
1340 | |
1341 | get_user_print_options (&opts); | |
1342 | opts.deref_ref = 0; | |
1343 | ||
d7e74731 PA |
1344 | string_file stb; |
1345 | ||
492d29ea | 1346 | TRY |
ed3ef339 | 1347 | { |
d7e74731 | 1348 | common_val_print (value, &stb, 0, &opts, current_language); |
ed3ef339 | 1349 | } |
492d29ea PA |
1350 | CATCH (except, RETURN_MASK_ALL) |
1351 | { | |
1352 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
1353 | } | |
1354 | END_CATCH | |
ed3ef339 DE |
1355 | |
1356 | /* Use SCM_FAILED_CONVERSION_QUESTION_MARK to ensure this doesn't | |
1357 | throw an error if the encoding fails. | |
1358 | IWBN to use scm_take_locale_string here, but we'd have to temporarily | |
1359 | override the default port conversion handler because contrary to | |
1360 | documentation it doesn't necessarily free the input string. */ | |
d7e74731 PA |
1361 | return scm_from_stringn (stb.c_str (), stb.size (), host_charset (), |
1362 | SCM_FAILED_CONVERSION_QUESTION_MARK); | |
ed3ef339 DE |
1363 | } |
1364 | \f | |
1365 | /* (parse-and-eval string) -> <gdb:value> | |
1366 | Parse a string and evaluate the string as an expression. */ | |
1367 | ||
1368 | static SCM | |
1369 | gdbscm_parse_and_eval (SCM expr_scm) | |
1370 | { | |
1371 | char *expr_str; | |
1372 | struct value *res_val = NULL; | |
1373 | SCM result; | |
1374 | struct cleanup *cleanups; | |
ed3ef339 DE |
1375 | |
1376 | /* The sequencing here, as everywhere else, is important. | |
1377 | We can't have existing cleanups when a Scheme exception is thrown. */ | |
1378 | ||
1379 | gdbscm_parse_function_args (FUNC_NAME, SCM_ARG1, NULL, "s", | |
1380 | expr_scm, &expr_str); | |
1381 | ||
1382 | cleanups = make_cleanup_value_free_to_mark (value_mark ()); | |
1383 | make_cleanup (xfree, expr_str); | |
1384 | ||
492d29ea | 1385 | TRY |
ed3ef339 DE |
1386 | { |
1387 | res_val = parse_and_eval (expr_str); | |
1388 | } | |
492d29ea PA |
1389 | CATCH (except, RETURN_MASK_ALL) |
1390 | { | |
1391 | GDBSCM_HANDLE_GDB_EXCEPTION_WITH_CLEANUPS (except, cleanups); | |
1392 | } | |
1393 | END_CATCH | |
ed3ef339 DE |
1394 | |
1395 | gdb_assert (res_val != NULL); | |
1396 | result = vlscm_scm_from_value (res_val); | |
1397 | ||
1398 | do_cleanups (cleanups); | |
1399 | ||
1400 | if (gdbscm_is_exception (result)) | |
1401 | gdbscm_throw (result); | |
1402 | ||
1403 | return result; | |
1404 | } | |
1405 | ||
1406 | /* (history-ref integer) -> <gdb:value> | |
1407 | Return the specified value from GDB's value history. */ | |
1408 | ||
1409 | static SCM | |
1410 | gdbscm_history_ref (SCM index) | |
1411 | { | |
1412 | int i; | |
1413 | struct value *res_val = NULL; /* Initialize to appease gcc warning. */ | |
ed3ef339 DE |
1414 | |
1415 | gdbscm_parse_function_args (FUNC_NAME, SCM_ARG1, NULL, "i", index, &i); | |
1416 | ||
492d29ea | 1417 | TRY |
ed3ef339 DE |
1418 | { |
1419 | res_val = access_value_history (i); | |
1420 | } | |
492d29ea PA |
1421 | CATCH (except, RETURN_MASK_ALL) |
1422 | { | |
1423 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
1424 | } | |
1425 | END_CATCH | |
ed3ef339 DE |
1426 | |
1427 | return vlscm_scm_from_value (res_val); | |
1428 | } | |
7a5a839f LC |
1429 | |
1430 | /* (history-append! <gdb:value>) -> index | |
1431 | Append VALUE to GDB's value history. Return its index in the history. */ | |
1432 | ||
1433 | static SCM | |
1434 | gdbscm_history_append_x (SCM value) | |
1435 | { | |
1436 | int res_index = -1; | |
1437 | struct value *v; | |
fb934770 | 1438 | value_smob *v_smob; |
7a5a839f | 1439 | |
fb934770 LC |
1440 | v_smob = vlscm_get_value_smob_arg_unsafe (value, SCM_ARG1, FUNC_NAME); |
1441 | v = v_smob->value; | |
7a5a839f | 1442 | |
492d29ea | 1443 | TRY |
7a5a839f LC |
1444 | { |
1445 | res_index = record_latest_value (v); | |
1446 | } | |
492d29ea PA |
1447 | CATCH (except, RETURN_MASK_ALL) |
1448 | { | |
1449 | GDBSCM_HANDLE_GDB_EXCEPTION (except); | |
1450 | } | |
1451 | END_CATCH | |
7a5a839f LC |
1452 | |
1453 | return scm_from_int (res_index); | |
1454 | } | |
ed3ef339 DE |
1455 | \f |
1456 | /* Initialize the Scheme value code. */ | |
1457 | ||
1458 | static const scheme_function value_functions[] = | |
1459 | { | |
72e02483 | 1460 | { "value?", 1, 0, 0, as_a_scm_t_subr (gdbscm_value_p), |
ed3ef339 DE |
1461 | "\ |
1462 | Return #t if the object is a <gdb:value> object." }, | |
1463 | ||
72e02483 | 1464 | { "make-value", 1, 0, 1, as_a_scm_t_subr (gdbscm_make_value), |
ed3ef339 DE |
1465 | "\ |
1466 | Create a <gdb:value> representing object.\n\ | |
1467 | Typically this is used to convert numbers and strings to\n\ | |
1468 | <gdb:value> objects.\n\ | |
1469 | \n\ | |
1470 | Arguments: object [#:type <gdb:type>]" }, | |
1471 | ||
72e02483 PA |
1472 | { "value-optimized-out?", 1, 0, 0, |
1473 | as_a_scm_t_subr (gdbscm_value_optimized_out_p), | |
ed3ef339 DE |
1474 | "\ |
1475 | Return #t if the value has been optimizd out." }, | |
1476 | ||
72e02483 | 1477 | { "value-address", 1, 0, 0, as_a_scm_t_subr (gdbscm_value_address), |
ed3ef339 DE |
1478 | "\ |
1479 | Return the address of the value." }, | |
1480 | ||
72e02483 | 1481 | { "value-type", 1, 0, 0, as_a_scm_t_subr (gdbscm_value_type), |
ed3ef339 DE |
1482 | "\ |
1483 | Return the type of the value." }, | |
1484 | ||
72e02483 | 1485 | { "value-dynamic-type", 1, 0, 0, as_a_scm_t_subr (gdbscm_value_dynamic_type), |
ed3ef339 DE |
1486 | "\ |
1487 | Return the dynamic type of the value." }, | |
1488 | ||
72e02483 | 1489 | { "value-cast", 2, 0, 0, as_a_scm_t_subr (gdbscm_value_cast), |
ed3ef339 DE |
1490 | "\ |
1491 | Cast the value to the supplied type.\n\ | |
1492 | \n\ | |
1493 | Arguments: <gdb:value> <gdb:type>" }, | |
1494 | ||
72e02483 | 1495 | { "value-dynamic-cast", 2, 0, 0, as_a_scm_t_subr (gdbscm_value_dynamic_cast), |
ed3ef339 DE |
1496 | "\ |
1497 | Cast the value to the supplied type, as if by the C++\n\ | |
1498 | dynamic_cast operator.\n\ | |
1499 | \n\ | |
1500 | Arguments: <gdb:value> <gdb:type>" }, | |
1501 | ||
72e02483 PA |
1502 | { "value-reinterpret-cast", 2, 0, 0, |
1503 | as_a_scm_t_subr (gdbscm_value_reinterpret_cast), | |
ed3ef339 DE |
1504 | "\ |
1505 | Cast the value to the supplied type, as if by the C++\n\ | |
1506 | reinterpret_cast operator.\n\ | |
1507 | \n\ | |
1508 | Arguments: <gdb:value> <gdb:type>" }, | |
1509 | ||
72e02483 | 1510 | { "value-dereference", 1, 0, 0, as_a_scm_t_subr (gdbscm_value_dereference), |
ed3ef339 DE |
1511 | "\ |
1512 | Return the result of applying the C unary * operator to the value." }, | |
1513 | ||
72e02483 PA |
1514 | { "value-referenced-value", 1, 0, 0, |
1515 | as_a_scm_t_subr (gdbscm_value_referenced_value), | |
ed3ef339 DE |
1516 | "\ |
1517 | Given a value of a reference type, return the value referenced.\n\ | |
1518 | The difference between this function and value-dereference is that\n\ | |
1519 | the latter applies * unary operator to a value, which need not always\n\ | |
1520 | result in the value referenced.\n\ | |
1521 | For example, for a value which is a reference to an 'int' pointer ('int *'),\n\ | |
1522 | value-dereference will result in a value of type 'int' while\n\ | |
1523 | value-referenced-value will result in a value of type 'int *'." }, | |
1524 | ||
72e02483 | 1525 | { "value-field", 2, 0, 0, as_a_scm_t_subr (gdbscm_value_field), |
ed3ef339 DE |
1526 | "\ |
1527 | Return the specified field of the value.\n\ | |
1528 | \n\ | |
1529 | Arguments: <gdb:value> string" }, | |
1530 | ||
72e02483 | 1531 | { "value-subscript", 2, 0, 0, as_a_scm_t_subr (gdbscm_value_subscript), |
ed3ef339 DE |
1532 | "\ |
1533 | Return the value of the array at the specified index.\n\ | |
1534 | \n\ | |
1535 | Arguments: <gdb:value> integer" }, | |
1536 | ||
72e02483 | 1537 | { "value-call", 2, 0, 0, as_a_scm_t_subr (gdbscm_value_call), |
ed3ef339 DE |
1538 | "\ |
1539 | Perform an inferior function call taking the value as a pointer to the\n\ | |
1540 | function to call.\n\ | |
1541 | Each element of the argument list must be a <gdb:value> object or an object\n\ | |
1542 | that can be converted to one.\n\ | |
1543 | The result is the value returned by the function.\n\ | |
1544 | \n\ | |
1545 | Arguments: <gdb:value> arg-list" }, | |
1546 | ||
72e02483 | 1547 | { "value->bool", 1, 0, 0, as_a_scm_t_subr (gdbscm_value_to_bool), |
ed3ef339 DE |
1548 | "\ |
1549 | Return the Scheme boolean representing the GDB value.\n\ | |
1550 | The value must be \"integer like\". Pointers are ok." }, | |
1551 | ||
72e02483 | 1552 | { "value->integer", 1, 0, 0, as_a_scm_t_subr (gdbscm_value_to_integer), |
ed3ef339 DE |
1553 | "\ |
1554 | Return the Scheme integer representing the GDB value.\n\ | |
1555 | The value must be \"integer like\". Pointers are ok." }, | |
1556 | ||
72e02483 | 1557 | { "value->real", 1, 0, 0, as_a_scm_t_subr (gdbscm_value_to_real), |
ed3ef339 DE |
1558 | "\ |
1559 | Return the Scheme real number representing the GDB value.\n\ | |
1560 | The value must be a number." }, | |
1561 | ||
72e02483 | 1562 | { "value->bytevector", 1, 0, 0, as_a_scm_t_subr (gdbscm_value_to_bytevector), |
ed3ef339 DE |
1563 | "\ |
1564 | Return a Scheme bytevector with the raw contents of the GDB value.\n\ | |
1565 | No transformation, endian or otherwise, is performed." }, | |
1566 | ||
72e02483 | 1567 | { "value->string", 1, 0, 1, as_a_scm_t_subr (gdbscm_value_to_string), |
ed3ef339 DE |
1568 | "\ |
1569 | Return the Unicode string of the value's contents.\n\ | |
1570 | If ENCODING is not given, the string is assumed to be encoded in\n\ | |
1571 | the target's charset.\n\ | |
1572 | An error setting \"error\" causes an exception to be thrown if there's\n\ | |
1573 | a decoding error. An error setting of \"substitute\" causes invalid\n\ | |
1574 | characters to be replaced with \"?\". The default is \"error\".\n\ | |
1575 | If LENGTH is provided, only fetch string to the length provided.\n\ | |
1576 | \n\ | |
1577 | Arguments: <gdb:value>\n\ | |
1578 | [#:encoding encoding] [#:errors \"error\"|\"substitute\"]\n\ | |
1579 | [#:length length]" }, | |
1580 | ||
72e02483 PA |
1581 | { "value->lazy-string", 1, 0, 1, |
1582 | as_a_scm_t_subr (gdbscm_value_to_lazy_string), | |
ed3ef339 DE |
1583 | "\ |
1584 | Return a Scheme object representing a lazily fetched Unicode string\n\ | |
1585 | of the value's contents.\n\ | |
1586 | If ENCODING is not given, the string is assumed to be encoded in\n\ | |
1587 | the target's charset.\n\ | |
1588 | If LENGTH is provided, only fetch string to the length provided.\n\ | |
1589 | \n\ | |
1590 | Arguments: <gdb:value> [#:encoding encoding] [#:length length]" }, | |
1591 | ||
72e02483 | 1592 | { "value-lazy?", 1, 0, 0, as_a_scm_t_subr (gdbscm_value_lazy_p), |
ed3ef339 DE |
1593 | "\ |
1594 | Return #t if the value is lazy (not fetched yet from the inferior).\n\ | |
1595 | A lazy value is fetched when needed, or when the value-fetch-lazy! function\n\ | |
1596 | is called." }, | |
1597 | ||
72e02483 | 1598 | { "make-lazy-value", 2, 0, 0, as_a_scm_t_subr (gdbscm_make_lazy_value), |
ed3ef339 DE |
1599 | "\ |
1600 | Create a <gdb:value> that will be lazily fetched from the target.\n\ | |
1601 | \n\ | |
1602 | Arguments: <gdb:type> address" }, | |
1603 | ||
72e02483 | 1604 | { "value-fetch-lazy!", 1, 0, 0, as_a_scm_t_subr (gdbscm_value_fetch_lazy_x), |
ed3ef339 DE |
1605 | "\ |
1606 | Fetch the value from the inferior, if it was lazy.\n\ | |
1607 | The result is \"unspecified\"." }, | |
1608 | ||
72e02483 | 1609 | { "value-print", 1, 0, 0, as_a_scm_t_subr (gdbscm_value_print), |
ed3ef339 DE |
1610 | "\ |
1611 | Return the string representation (print form) of the value." }, | |
1612 | ||
72e02483 | 1613 | { "parse-and-eval", 1, 0, 0, as_a_scm_t_subr (gdbscm_parse_and_eval), |
ed3ef339 DE |
1614 | "\ |
1615 | Evaluates string in gdb and returns the result as a <gdb:value> object." }, | |
1616 | ||
72e02483 | 1617 | { "history-ref", 1, 0, 0, as_a_scm_t_subr (gdbscm_history_ref), |
ed3ef339 DE |
1618 | "\ |
1619 | Return the specified value from GDB's value history." }, | |
1620 | ||
72e02483 | 1621 | { "history-append!", 1, 0, 0, as_a_scm_t_subr (gdbscm_history_append_x), |
7a5a839f LC |
1622 | "\ |
1623 | Append the specified value onto GDB's value history." }, | |
1624 | ||
ed3ef339 DE |
1625 | END_FUNCTIONS |
1626 | }; | |
1627 | ||
1628 | void | |
1629 | gdbscm_initialize_values (void) | |
1630 | { | |
1631 | value_smob_tag = gdbscm_make_smob_type (value_smob_name, | |
1632 | sizeof (value_smob)); | |
ed3ef339 DE |
1633 | scm_set_smob_free (value_smob_tag, vlscm_free_value_smob); |
1634 | scm_set_smob_print (value_smob_tag, vlscm_print_value_smob); | |
1635 | scm_set_smob_equalp (value_smob_tag, vlscm_equal_p_value_smob); | |
1636 | ||
1637 | gdbscm_define_functions (value_functions, 1); | |
1638 | ||
1639 | type_keyword = scm_from_latin1_keyword ("type"); | |
1640 | encoding_keyword = scm_from_latin1_keyword ("encoding"); | |
1641 | errors_keyword = scm_from_latin1_keyword ("errors"); | |
1642 | length_keyword = scm_from_latin1_keyword ("length"); | |
1643 | ||
1644 | error_symbol = scm_from_latin1_symbol ("error"); | |
1645 | escape_symbol = scm_from_latin1_symbol ("escape"); | |
1646 | substitute_symbol = scm_from_latin1_symbol ("substitute"); | |
1647 | } |