Commit | Line | Data |
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bd5635a1 | 1 | /* Evaluate expressions for GDB. |
477b2425 | 2 | Copyright 1986, 1987, 1989, 1991, 1992, 1993, 1994, 1995 |
2d67c7e9 | 3 | Free Software Foundation, Inc. |
bd5635a1 RP |
4 | |
5 | This file is part of GDB. | |
6 | ||
2ccb3837 | 7 | This program is free software; you can redistribute it and/or modify |
bd5635a1 | 8 | it under the terms of the GNU General Public License as published by |
2ccb3837 JG |
9 | the Free Software Foundation; either version 2 of the License, or |
10 | (at your option) any later version. | |
bd5635a1 | 11 | |
2ccb3837 | 12 | This program is distributed in the hope that it will be useful, |
bd5635a1 RP |
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 | |
2ccb3837 | 18 | along with this program; if not, write to the Free Software |
0694bce6 | 19 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
bd5635a1 RP |
20 | |
21 | #include "defs.h" | |
2b576293 | 22 | #include "gdb_string.h" |
bd5635a1 | 23 | #include "symtab.h" |
01be6913 | 24 | #include "gdbtypes.h" |
bd5635a1 RP |
25 | #include "value.h" |
26 | #include "expression.h" | |
27 | #include "target.h" | |
2ccb3837 | 28 | #include "frame.h" |
40620258 | 29 | #include "demangle.h" |
fb6e675f | 30 | #include "language.h" /* For CAST_IS_CONVERSION */ |
477b2425 | 31 | #include "f-lang.h" /* for array bound stuff */ |
cd10c7e3 | 32 | /* start-sanitize-gm */ |
bfe8f516 FF |
33 | #ifdef GENERAL_MAGIC |
34 | #include "gmagic.h" | |
35 | #endif /* GENERAL_MAGIC */ | |
cd10c7e3 | 36 | /* end-sanitize-gm */ |
bd5635a1 | 37 | |
01be6913 PB |
38 | /* Prototypes for local functions. */ |
39 | ||
2d67c7e9 PB |
40 | static value_ptr evaluate_subexp_for_sizeof PARAMS ((struct expression *, |
41 | int *)); | |
01be6913 | 42 | |
2d67c7e9 PB |
43 | static value_ptr evaluate_subexp_for_address PARAMS ((struct expression *, |
44 | int *, enum noside)); | |
01be6913 | 45 | |
7398958c PB |
46 | #ifdef __GNUC__ |
47 | inline | |
48 | #endif | |
49 | static value_ptr | |
50 | evaluate_subexp (expect_type, exp, pos, noside) | |
51 | struct type *expect_type; | |
52 | register struct expression *exp; | |
53 | register int *pos; | |
54 | enum noside noside; | |
55 | { | |
56 | return (*exp->language_defn->evaluate_exp) (expect_type, exp, pos, noside); | |
57 | } | |
bd5635a1 RP |
58 | \f |
59 | /* Parse the string EXP as a C expression, evaluate it, | |
60 | and return the result as a number. */ | |
61 | ||
62 | CORE_ADDR | |
63 | parse_and_eval_address (exp) | |
64 | char *exp; | |
65 | { | |
2ccb3837 | 66 | struct expression *expr = parse_expression (exp); |
bd5635a1 | 67 | register CORE_ADDR addr; |
01be6913 PB |
68 | register struct cleanup *old_chain = |
69 | make_cleanup (free_current_contents, &expr); | |
bd5635a1 | 70 | |
2ccb3837 | 71 | addr = value_as_pointer (evaluate_expression (expr)); |
bd5635a1 RP |
72 | do_cleanups (old_chain); |
73 | return addr; | |
74 | } | |
75 | ||
76 | /* Like parse_and_eval_address but takes a pointer to a char * variable | |
77 | and advanced that variable across the characters parsed. */ | |
78 | ||
79 | CORE_ADDR | |
80 | parse_and_eval_address_1 (expptr) | |
81 | char **expptr; | |
82 | { | |
2ccb3837 | 83 | struct expression *expr = parse_exp_1 (expptr, (struct block *)0, 0); |
bd5635a1 | 84 | register CORE_ADDR addr; |
01be6913 PB |
85 | register struct cleanup *old_chain = |
86 | make_cleanup (free_current_contents, &expr); | |
bd5635a1 | 87 | |
2ccb3837 | 88 | addr = value_as_pointer (evaluate_expression (expr)); |
bd5635a1 RP |
89 | do_cleanups (old_chain); |
90 | return addr; | |
91 | } | |
92 | ||
2d67c7e9 | 93 | value_ptr |
bd5635a1 RP |
94 | parse_and_eval (exp) |
95 | char *exp; | |
96 | { | |
2ccb3837 | 97 | struct expression *expr = parse_expression (exp); |
2d67c7e9 | 98 | register value_ptr val; |
bd5635a1 RP |
99 | register struct cleanup *old_chain |
100 | = make_cleanup (free_current_contents, &expr); | |
101 | ||
102 | val = evaluate_expression (expr); | |
103 | do_cleanups (old_chain); | |
104 | return val; | |
105 | } | |
106 | ||
107 | /* Parse up to a comma (or to a closeparen) | |
108 | in the string EXPP as an expression, evaluate it, and return the value. | |
109 | EXPP is advanced to point to the comma. */ | |
110 | ||
2d67c7e9 | 111 | value_ptr |
bd5635a1 RP |
112 | parse_to_comma_and_eval (expp) |
113 | char **expp; | |
114 | { | |
2ccb3837 | 115 | struct expression *expr = parse_exp_1 (expp, (struct block *) 0, 1); |
2d67c7e9 | 116 | register value_ptr val; |
bd5635a1 RP |
117 | register struct cleanup *old_chain |
118 | = make_cleanup (free_current_contents, &expr); | |
119 | ||
120 | val = evaluate_expression (expr); | |
121 | do_cleanups (old_chain); | |
122 | return val; | |
123 | } | |
124 | \f | |
125 | /* Evaluate an expression in internal prefix form | |
0a5d35ed | 126 | such as is constructed by parse.y. |
bd5635a1 RP |
127 | |
128 | See expression.h for info on the format of an expression. */ | |
129 | ||
2d67c7e9 | 130 | value_ptr |
bd5635a1 RP |
131 | evaluate_expression (exp) |
132 | struct expression *exp; | |
133 | { | |
134 | int pc = 0; | |
135 | return evaluate_subexp (NULL_TYPE, exp, &pc, EVAL_NORMAL); | |
136 | } | |
137 | ||
138 | /* Evaluate an expression, avoiding all memory references | |
139 | and getting a value whose type alone is correct. */ | |
140 | ||
2d67c7e9 | 141 | value_ptr |
bd5635a1 RP |
142 | evaluate_type (exp) |
143 | struct expression *exp; | |
144 | { | |
145 | int pc = 0; | |
146 | return evaluate_subexp (NULL_TYPE, exp, &pc, EVAL_AVOID_SIDE_EFFECTS); | |
147 | } | |
148 | ||
0694bce6 SC |
149 | /* If the next expression is an OP_LABELED, skips past it, |
150 | returning the label. Otherwise, does nothing and returns NULL. */ | |
dcda44a0 | 151 | |
0694bce6 SC |
152 | static char* |
153 | get_label (exp, pos) | |
dcda44a0 | 154 | register struct expression *exp; |
0694bce6 | 155 | int *pos; |
dcda44a0 | 156 | { |
dcda44a0 PB |
157 | if (exp->elts[*pos].opcode == OP_LABELED) |
158 | { | |
159 | int pc = (*pos)++; | |
160 | char *name = &exp->elts[pc + 2].string; | |
161 | int tem = longest_to_int (exp->elts[pc + 1].longconst); | |
162 | (*pos) += 3 + BYTES_TO_EXP_ELEM (tem + 1); | |
0694bce6 | 163 | return name; |
dcda44a0 PB |
164 | } |
165 | else | |
0694bce6 SC |
166 | return NULL; |
167 | } | |
168 | ||
169 | /* This function evaluates tupes (in Chill) or brace-initializers | |
170 | (in C/C++) for structure types. */ | |
171 | ||
172 | static value_ptr | |
173 | evaluate_struct_tuple (struct_val, exp, pos, noside, nargs) | |
174 | value_ptr struct_val; | |
175 | register struct expression *exp; | |
176 | register int *pos; | |
177 | enum noside noside; | |
178 | int nargs; | |
179 | { | |
bcbf388e | 180 | struct type *struct_type = check_typedef (VALUE_TYPE (struct_val)); |
0694bce6 SC |
181 | struct type *substruct_type = struct_type; |
182 | struct type *field_type; | |
183 | int fieldno = -1; | |
184 | int variantno = -1; | |
185 | int subfieldno = -1; | |
bcbf388e | 186 | while (--nargs >= 0) |
dcda44a0 | 187 | { |
0694bce6 SC |
188 | int pc = *pos; |
189 | value_ptr val = NULL; | |
190 | int nlabels = 0; | |
191 | int bitpos, bitsize; | |
192 | char *addr; | |
193 | ||
194 | /* Skip past the labels, and count them. */ | |
195 | while (get_label (exp, pos) != NULL) | |
196 | nlabels++; | |
197 | ||
198 | do | |
199 | { | |
200 | char *label = get_label (exp, &pc); | |
201 | if (label) | |
202 | { | |
203 | for (fieldno = 0; fieldno < TYPE_NFIELDS (struct_type); | |
204 | fieldno++) | |
205 | { | |
206 | char *field_name = TYPE_FIELD_NAME (struct_type, fieldno); | |
207 | if (field_name != NULL && STREQ (field_name, label)) | |
208 | { | |
209 | variantno = -1; | |
210 | subfieldno = fieldno; | |
211 | substruct_type = struct_type; | |
212 | goto found; | |
213 | } | |
214 | } | |
215 | for (fieldno = 0; fieldno < TYPE_NFIELDS (struct_type); | |
216 | fieldno++) | |
217 | { | |
218 | char *field_name = TYPE_FIELD_NAME (struct_type, fieldno); | |
219 | field_type = TYPE_FIELD_TYPE (struct_type, fieldno); | |
220 | if ((field_name == 0 || *field_name == '\0') | |
221 | && TYPE_CODE (field_type) == TYPE_CODE_UNION) | |
222 | { | |
223 | variantno = 0; | |
224 | for (; variantno < TYPE_NFIELDS (field_type); | |
225 | variantno++) | |
226 | { | |
227 | substruct_type | |
228 | = TYPE_FIELD_TYPE (field_type, variantno); | |
229 | if (TYPE_CODE (substruct_type) == TYPE_CODE_STRUCT) | |
230 | { | |
231 | for (subfieldno = 0; | |
232 | subfieldno < TYPE_NFIELDS (substruct_type); | |
233 | subfieldno++) | |
234 | { | |
235 | if (STREQ (TYPE_FIELD_NAME (substruct_type, | |
236 | subfieldno), | |
237 | label)) | |
238 | { | |
239 | goto found; | |
240 | } | |
241 | } | |
242 | } | |
243 | } | |
244 | } | |
245 | } | |
246 | error ("there is no field named %s", label); | |
247 | found: | |
248 | ; | |
249 | } | |
250 | else | |
251 | { | |
252 | /* Unlabelled tuple element - go to next field. */ | |
253 | if (variantno >= 0) | |
254 | { | |
255 | subfieldno++; | |
256 | if (subfieldno >= TYPE_NFIELDS (substruct_type)) | |
257 | { | |
258 | variantno = -1; | |
259 | substruct_type = struct_type; | |
260 | } | |
261 | } | |
262 | if (variantno < 0) | |
263 | { | |
264 | fieldno++; | |
265 | subfieldno = fieldno; | |
266 | if (fieldno >= TYPE_NFIELDS (struct_type)) | |
267 | error ("too many initializers"); | |
268 | field_type = TYPE_FIELD_TYPE (struct_type, fieldno); | |
269 | if (TYPE_CODE (field_type) == TYPE_CODE_UNION | |
270 | && TYPE_FIELD_NAME (struct_type, fieldno)[0] == '0') | |
271 | error ("don't know which variant you want to set"); | |
272 | } | |
273 | } | |
dcda44a0 | 274 | |
0694bce6 SC |
275 | /* Here, struct_type is the type of the inner struct, |
276 | while substruct_type is the type of the inner struct. | |
277 | These are the same for normal structures, but a variant struct | |
278 | contains anonymous union fields that contain substruct fields. | |
279 | The value fieldno is the index of the top-level (normal or | |
280 | anonymous union) field in struct_field, while the value | |
281 | subfieldno is the index of the actual real (named inner) field | |
282 | in substruct_type. */ | |
283 | ||
284 | field_type = TYPE_FIELD_TYPE (substruct_type, subfieldno); | |
285 | if (val == 0) | |
1c486a2b | 286 | val = evaluate_subexp (field_type, exp, pos, noside); |
0694bce6 SC |
287 | |
288 | /* Now actually set the field in struct_val. */ | |
289 | ||
290 | /* Assign val to field fieldno. */ | |
291 | if (VALUE_TYPE (val) != field_type) | |
292 | val = value_cast (field_type, val); | |
293 | ||
294 | bitsize = TYPE_FIELD_BITSIZE (substruct_type, subfieldno); | |
295 | bitpos = TYPE_FIELD_BITPOS (struct_type, fieldno); | |
296 | if (variantno >= 0) | |
297 | bitpos += TYPE_FIELD_BITPOS (substruct_type, subfieldno); | |
298 | addr = VALUE_CONTENTS (struct_val) + bitpos / 8; | |
299 | if (bitsize) | |
300 | modify_field (addr, value_as_long (val), | |
301 | bitpos % 8, bitsize); | |
302 | else | |
303 | memcpy (addr, VALUE_CONTENTS (val), | |
304 | TYPE_LENGTH (VALUE_TYPE (val))); | |
305 | } while (--nlabels > 0); | |
306 | } | |
307 | return struct_val; | |
dcda44a0 PB |
308 | } |
309 | ||
bcbf388e PB |
310 | /* Recursive helper function for setting elements of array tuples for Chill. |
311 | The target is ARRAY (which has bounds LOW_BOUND to HIGH_BOUND); | |
312 | the element value is ELEMENT; | |
313 | EXP, POS and NOSIDE are as usual. | |
314 | Evaluates index expresions and sets the specified element(s) of | |
315 | ARRAY to ELEMENT. | |
316 | Returns last index value. */ | |
317 | ||
318 | static LONGEST | |
319 | init_array_element (array, element, exp, pos, noside, low_bound, high_bound) | |
320 | value_ptr array, element; | |
321 | register struct expression *exp; | |
322 | register int *pos; | |
323 | enum noside noside; | |
324 | { | |
325 | LONGEST index; | |
326 | int element_size = TYPE_LENGTH (VALUE_TYPE (element)); | |
327 | if (exp->elts[*pos].opcode == BINOP_COMMA) | |
328 | { | |
329 | (*pos)++; | |
330 | init_array_element (array, element, exp, pos, noside, | |
331 | low_bound, high_bound); | |
332 | return init_array_element (array, element, | |
333 | exp, pos, noside, low_bound, high_bound); | |
334 | } | |
335 | else if (exp->elts[*pos].opcode == BINOP_RANGE) | |
336 | { | |
337 | LONGEST low, high; | |
bcbf388e PB |
338 | (*pos)++; |
339 | low = value_as_long (evaluate_subexp (NULL_TYPE, exp, pos, noside)); | |
340 | high = value_as_long (evaluate_subexp (NULL_TYPE, exp, pos, noside)); | |
341 | if (low < low_bound || high > high_bound) | |
342 | error ("tuple range index out of range"); | |
343 | for (index = low ; index <= high; index++) | |
344 | { | |
345 | memcpy (VALUE_CONTENTS_RAW (array) | |
346 | + (index - low_bound) * element_size, | |
347 | VALUE_CONTENTS (element), element_size); | |
348 | } | |
349 | } | |
350 | else | |
351 | { | |
352 | index = value_as_long (evaluate_subexp (NULL_TYPE, exp, pos, noside)); | |
353 | if (index < low_bound || index > high_bound) | |
354 | error ("tuple index out of range"); | |
355 | memcpy (VALUE_CONTENTS_RAW (array) + (index - low_bound) * element_size, | |
356 | VALUE_CONTENTS (element), element_size); | |
357 | } | |
358 | return index; | |
359 | } | |
360 | ||
7398958c PB |
361 | value_ptr |
362 | evaluate_subexp_standard (expect_type, exp, pos, noside) | |
bd5635a1 RP |
363 | struct type *expect_type; |
364 | register struct expression *exp; | |
365 | register int *pos; | |
366 | enum noside noside; | |
367 | { | |
368 | enum exp_opcode op; | |
1500864f | 369 | int tem, tem2, tem3; |
40620258 | 370 | register int pc, pc2 = 0, oldpos; |
2d67c7e9 | 371 | register value_ptr arg1 = NULL, arg2 = NULL, arg3; |
01be6913 | 372 | struct type *type; |
bd5635a1 | 373 | int nargs; |
2d67c7e9 | 374 | value_ptr *argvec; |
2d67c7e9 PB |
375 | int upper, lower, retcode; |
376 | int code; | |
bd5635a1 | 377 | |
764adcb4 JK |
378 | /* This expect_type crap should not be used for C. C expressions do |
379 | not have any notion of expected types, never has and (goddess | |
380 | willing) never will. The C++ code uses it for some twisted | |
381 | purpose (I haven't investigated but I suspect it just the usual | |
382 | combination of Stroustrup figuring out some crazy language | |
383 | feature and Tiemann figuring out some crazier way to try to | |
384 | implement it). CHILL has the tuple stuff; I don't know enough | |
385 | about CHILL to know whether expected types is the way to do it. | |
386 | FORTRAN I don't know. */ | |
dcda44a0 PB |
387 | if (exp->language_defn->la_language != language_cplus |
388 | && exp->language_defn->la_language != language_chill) | |
22b1c54a JK |
389 | expect_type = NULL_TYPE; |
390 | ||
bd5635a1 RP |
391 | pc = (*pos)++; |
392 | op = exp->elts[pc].opcode; | |
393 | ||
394 | switch (op) | |
395 | { | |
396 | case OP_SCOPE: | |
a8a69e63 | 397 | tem = longest_to_int (exp->elts[pc + 2].longconst); |
1500864f | 398 | (*pos) += 4 + BYTES_TO_EXP_ELEM (tem + 1); |
01be6913 | 399 | arg1 = value_struct_elt_for_reference (exp->elts[pc + 1].type, |
8f86a4e4 | 400 | 0, |
01be6913 | 401 | exp->elts[pc + 1].type, |
a8a69e63 | 402 | &exp->elts[pc + 3].string, |
01be6913 | 403 | expect_type); |
5f00ca54 | 404 | if (arg1 == NULL) |
a8a69e63 | 405 | error ("There is no field named %s", &exp->elts[pc + 3].string); |
5f00ca54 | 406 | return arg1; |
bd5635a1 RP |
407 | |
408 | case OP_LONG: | |
409 | (*pos) += 3; | |
2ccb3837 | 410 | return value_from_longest (exp->elts[pc + 1].type, |
a8a69e63 | 411 | exp->elts[pc + 2].longconst); |
bd5635a1 RP |
412 | |
413 | case OP_DOUBLE: | |
414 | (*pos) += 3; | |
415 | return value_from_double (exp->elts[pc + 1].type, | |
416 | exp->elts[pc + 2].doubleconst); | |
417 | ||
418 | case OP_VAR_VALUE: | |
479fdd26 | 419 | (*pos) += 3; |
bd5635a1 RP |
420 | if (noside == EVAL_SKIP) |
421 | goto nosideret; | |
422 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
423 | { | |
40620258 | 424 | struct symbol * sym = exp->elts[pc + 2].symbol; |
bd5635a1 RP |
425 | enum lval_type lv; |
426 | ||
427 | switch (SYMBOL_CLASS (sym)) | |
428 | { | |
429 | case LOC_CONST: | |
430 | case LOC_LABEL: | |
431 | case LOC_CONST_BYTES: | |
432 | lv = not_lval; | |
433 | break; | |
434 | ||
435 | case LOC_REGISTER: | |
436 | case LOC_REGPARM: | |
437 | lv = lval_register; | |
438 | break; | |
439 | ||
440 | default: | |
441 | lv = lval_memory; | |
442 | break; | |
443 | } | |
444 | ||
445 | return value_zero (SYMBOL_TYPE (sym), lv); | |
446 | } | |
447 | else | |
479fdd26 JK |
448 | return value_of_variable (exp->elts[pc + 2].symbol, |
449 | exp->elts[pc + 1].block); | |
bd5635a1 RP |
450 | |
451 | case OP_LAST: | |
452 | (*pos) += 2; | |
2ccb3837 JG |
453 | return |
454 | access_value_history (longest_to_int (exp->elts[pc + 1].longconst)); | |
bd5635a1 RP |
455 | |
456 | case OP_REGISTER: | |
457 | (*pos) += 2; | |
2ccb3837 | 458 | return value_of_register (longest_to_int (exp->elts[pc + 1].longconst)); |
bd5635a1 | 459 | |
e58de8a2 FF |
460 | case OP_BOOL: |
461 | (*pos) += 2; | |
b52cac6b | 462 | return value_from_longest (LA_BOOL_TYPE, |
2d67c7e9 | 463 | exp->elts[pc + 1].longconst); |
e58de8a2 | 464 | |
bd5635a1 RP |
465 | case OP_INTERNALVAR: |
466 | (*pos) += 2; | |
467 | return value_of_internalvar (exp->elts[pc + 1].internalvar); | |
468 | ||
469 | case OP_STRING: | |
a8a69e63 | 470 | tem = longest_to_int (exp->elts[pc + 1].longconst); |
1500864f | 471 | (*pos) += 3 + BYTES_TO_EXP_ELEM (tem + 1); |
bd5635a1 RP |
472 | if (noside == EVAL_SKIP) |
473 | goto nosideret; | |
a8a69e63 | 474 | return value_string (&exp->elts[pc + 2].string, tem); |
bd5635a1 | 475 | |
1500864f | 476 | case OP_BITSTRING: |
6d34c236 PB |
477 | tem = longest_to_int (exp->elts[pc + 1].longconst); |
478 | (*pos) | |
479 | += 3 + BYTES_TO_EXP_ELEM ((tem + HOST_CHAR_BIT - 1) / HOST_CHAR_BIT); | |
480 | if (noside == EVAL_SKIP) | |
481 | goto nosideret; | |
482 | return value_bitstring (&exp->elts[pc + 2].string, tem); | |
1500864f JK |
483 | break; |
484 | ||
485 | case OP_ARRAY: | |
486 | (*pos) += 3; | |
487 | tem2 = longest_to_int (exp->elts[pc + 1].longconst); | |
488 | tem3 = longest_to_int (exp->elts[pc + 2].longconst); | |
489 | nargs = tem3 - tem2 + 1; | |
bcbf388e | 490 | type = expect_type ? check_typedef (expect_type) : NULL_TYPE; |
2d67c7e9 PB |
491 | |
492 | if (expect_type != NULL_TYPE && noside != EVAL_SKIP | |
bcbf388e | 493 | && TYPE_CODE (type) == TYPE_CODE_STRUCT) |
2d67c7e9 PB |
494 | { |
495 | value_ptr rec = allocate_value (expect_type); | |
bcbf388e | 496 | memset (VALUE_CONTENTS_RAW (rec), '\0', TYPE_LENGTH (type)); |
0694bce6 | 497 | return evaluate_struct_tuple (rec, exp, pos, noside, nargs); |
2d67c7e9 PB |
498 | } |
499 | ||
500 | if (expect_type != NULL_TYPE && noside != EVAL_SKIP | |
bcbf388e | 501 | && TYPE_CODE (type) == TYPE_CODE_ARRAY) |
2d67c7e9 | 502 | { |
bcbf388e PB |
503 | struct type *range_type = TYPE_FIELD_TYPE (type, 0); |
504 | struct type *element_type = TYPE_TARGET_TYPE (type); | |
f91a9e05 | 505 | value_ptr array = allocate_value (expect_type); |
bcbf388e PB |
506 | int element_size = TYPE_LENGTH (check_typedef (element_type)); |
507 | LONGEST low_bound, high_bound, index; | |
508 | if (get_discrete_bounds (range_type, &low_bound, &high_bound) < 0) | |
509 | { | |
510 | low_bound = 0; | |
511 | high_bound = (TYPE_LENGTH (type) / element_size) - 1; | |
512 | } | |
513 | index = low_bound; | |
514 | memset (VALUE_CONTENTS_RAW (array), 0, TYPE_LENGTH (expect_type)); | |
515 | for (tem = nargs; --nargs >= 0; ) | |
2d67c7e9 | 516 | { |
bcbf388e PB |
517 | value_ptr element; |
518 | int index_pc = 0; | |
519 | if (exp->elts[*pos].opcode == BINOP_RANGE) | |
520 | { | |
521 | index_pc = ++(*pos); | |
522 | evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP); | |
523 | } | |
524 | element = evaluate_subexp (element_type, exp, pos, noside); | |
f91a9e05 PB |
525 | if (VALUE_TYPE (element) != element_type) |
526 | element = value_cast (element_type, element); | |
bcbf388e PB |
527 | if (index_pc) |
528 | { | |
529 | int continue_pc = *pos; | |
530 | *pos = index_pc; | |
531 | index = init_array_element (array, element, exp, pos, noside, | |
532 | low_bound, high_bound); | |
533 | *pos = continue_pc; | |
534 | } | |
535 | else | |
536 | { | |
537 | memcpy (VALUE_CONTENTS_RAW (array) | |
538 | + (index - low_bound) * element_size, | |
539 | VALUE_CONTENTS (element), | |
540 | element_size); | |
541 | } | |
542 | index++; | |
2d67c7e9 | 543 | } |
f91a9e05 | 544 | return array; |
2d67c7e9 PB |
545 | } |
546 | ||
dcda44a0 | 547 | if (expect_type != NULL_TYPE && noside != EVAL_SKIP |
bcbf388e | 548 | && TYPE_CODE (type) == TYPE_CODE_SET) |
dcda44a0 PB |
549 | { |
550 | value_ptr set = allocate_value (expect_type); | |
dcda44a0 | 551 | char *valaddr = VALUE_CONTENTS_RAW (set); |
bcbf388e PB |
552 | struct type *element_type = TYPE_INDEX_TYPE (type); |
553 | LONGEST low_bound, high_bound; | |
554 | if (get_discrete_bounds (element_type, &low_bound, &high_bound) < 0) | |
555 | error ("(power)set type with unknown size"); | |
556 | memset (valaddr, '\0', TYPE_LENGTH (type)); | |
dcda44a0 PB |
557 | for (tem = 0; tem < nargs; tem++) |
558 | { | |
bcbf388e PB |
559 | LONGEST range_low, range_high; |
560 | value_ptr elem_val; | |
561 | if (exp->elts[*pos].opcode == BINOP_RANGE) | |
562 | { | |
563 | (*pos)++; | |
564 | elem_val = evaluate_subexp (element_type, exp, pos, noside); | |
565 | range_low = value_as_long (elem_val); | |
566 | elem_val = evaluate_subexp (element_type, exp, pos, noside); | |
567 | range_high = value_as_long (elem_val); | |
568 | } | |
569 | else | |
570 | { | |
571 | elem_val = evaluate_subexp (element_type, exp, pos, noside); | |
572 | range_low = range_high = value_as_long (elem_val); | |
573 | } | |
574 | if (range_low > range_high) | |
575 | { | |
576 | warning ("empty POWERSET tuple range"); | |
577 | continue; | |
578 | } | |
579 | if (range_low < low_bound || range_high > high_bound) | |
dcda44a0 | 580 | error ("POWERSET tuple element out of range"); |
bcbf388e PB |
581 | range_low -= low_bound; |
582 | range_high -= low_bound; | |
583 | for ( ; range_low <= range_high; range_low++) | |
584 | { | |
585 | int bit_index = (unsigned) range_low % TARGET_CHAR_BIT; | |
586 | if (BITS_BIG_ENDIAN) | |
587 | bit_index = TARGET_CHAR_BIT - 1 - bit_index; | |
588 | valaddr [(unsigned) range_low / TARGET_CHAR_BIT] | |
589 | |= 1 << bit_index; | |
590 | } | |
dcda44a0 PB |
591 | } |
592 | return set; | |
593 | } | |
594 | ||
2d67c7e9 | 595 | argvec = (value_ptr *) alloca (sizeof (value_ptr) * nargs); |
1500864f JK |
596 | for (tem = 0; tem < nargs; tem++) |
597 | { | |
598 | /* Ensure that array expressions are coerced into pointer objects. */ | |
599 | argvec[tem] = evaluate_subexp_with_coercion (exp, pos, noside); | |
600 | } | |
601 | if (noside == EVAL_SKIP) | |
602 | goto nosideret; | |
2d67c7e9 | 603 | return value_array (tem2, tem3, argvec); |
1500864f | 604 | |
f91a9e05 PB |
605 | case TERNOP_SLICE: |
606 | { | |
607 | value_ptr array = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
608 | int lowbound | |
609 | = value_as_long (evaluate_subexp (NULL_TYPE, exp, pos, noside)); | |
610 | int upper | |
611 | = value_as_long (evaluate_subexp (NULL_TYPE, exp, pos, noside)); | |
bcbf388e PB |
612 | if (noside == EVAL_SKIP) |
613 | goto nosideret; | |
f91a9e05 PB |
614 | return value_slice (array, lowbound, upper - lowbound + 1); |
615 | } | |
616 | ||
617 | case TERNOP_SLICE_COUNT: | |
618 | { | |
619 | value_ptr array = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
620 | int lowbound | |
621 | = value_as_long (evaluate_subexp (NULL_TYPE, exp, pos, noside)); | |
622 | int length | |
623 | = value_as_long (evaluate_subexp (NULL_TYPE, exp, pos, noside)); | |
624 | return value_slice (array, lowbound, length); | |
625 | } | |
626 | ||
bd5635a1 RP |
627 | case TERNOP_COND: |
628 | /* Skip third and second args to evaluate the first one. */ | |
629 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
e58de8a2 | 630 | if (value_logical_not (arg1)) |
bd5635a1 RP |
631 | { |
632 | evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP); | |
633 | return evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
634 | } | |
635 | else | |
636 | { | |
637 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
638 | evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP); | |
639 | return arg2; | |
640 | } | |
641 | ||
642 | case OP_FUNCALL: | |
643 | (*pos) += 2; | |
644 | op = exp->elts[*pos].opcode; | |
1c486a2b PB |
645 | nargs = longest_to_int (exp->elts[pc + 1].longconst); |
646 | /* Allocate arg vector, including space for the function to be | |
647 | called in argvec[0] and a terminating NULL */ | |
648 | argvec = (value_ptr *) alloca (sizeof (value_ptr) * (nargs + 3)); | |
bd5635a1 RP |
649 | if (op == STRUCTOP_MEMBER || op == STRUCTOP_MPTR) |
650 | { | |
2d67c7e9 | 651 | LONGEST fnptr; |
bd5635a1 | 652 | |
1c486a2b | 653 | nargs++; |
bd5635a1 RP |
654 | /* First, evaluate the structure into arg2 */ |
655 | pc2 = (*pos)++; | |
656 | ||
657 | if (noside == EVAL_SKIP) | |
658 | goto nosideret; | |
659 | ||
660 | if (op == STRUCTOP_MEMBER) | |
661 | { | |
662 | arg2 = evaluate_subexp_for_address (exp, pos, noside); | |
663 | } | |
664 | else | |
665 | { | |
666 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
667 | } | |
668 | ||
669 | /* If the function is a virtual function, then the | |
670 | aggregate value (providing the structure) plays | |
671 | its part by providing the vtable. Otherwise, | |
672 | it is just along for the ride: call the function | |
673 | directly. */ | |
674 | ||
675 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
676 | ||
2d67c7e9 | 677 | fnptr = value_as_long (arg1); |
35fcebce PB |
678 | |
679 | if (METHOD_PTR_IS_VIRTUAL(fnptr)) | |
bd5635a1 | 680 | { |
35fcebce | 681 | int fnoffset = METHOD_PTR_TO_VOFFSET(fnptr); |
bd5635a1 | 682 | struct type *basetype; |
35fcebce PB |
683 | struct type *domain_type = |
684 | TYPE_DOMAIN_TYPE (TYPE_TARGET_TYPE (VALUE_TYPE (arg1))); | |
bd5635a1 RP |
685 | int i, j; |
686 | basetype = TYPE_TARGET_TYPE (VALUE_TYPE (arg2)); | |
35fcebce PB |
687 | if (domain_type != basetype) |
688 | arg2 = value_cast(lookup_pointer_type (domain_type), arg2); | |
689 | basetype = TYPE_VPTR_BASETYPE (domain_type); | |
bd5635a1 RP |
690 | for (i = TYPE_NFN_FIELDS (basetype) - 1; i >= 0; i--) |
691 | { | |
692 | struct fn_field *f = TYPE_FN_FIELDLIST1 (basetype, i); | |
693 | /* If one is virtual, then all are virtual. */ | |
694 | if (TYPE_FN_FIELD_VIRTUAL_P (f, 0)) | |
695 | for (j = TYPE_FN_FIELDLIST_LENGTH (basetype, i) - 1; j >= 0; --j) | |
b52cac6b | 696 | if ((int) TYPE_FN_FIELD_VOFFSET (f, j) == fnoffset) |
bd5635a1 | 697 | { |
2d67c7e9 | 698 | value_ptr temp = value_ind (arg2); |
35fcebce PB |
699 | arg1 = value_virtual_fn_field (&temp, f, j, domain_type, 0); |
700 | arg2 = value_addr (temp); | |
bd5635a1 RP |
701 | goto got_it; |
702 | } | |
703 | } | |
704 | if (i < 0) | |
35fcebce | 705 | error ("virtual function at index %d not found", fnoffset); |
bd5635a1 RP |
706 | } |
707 | else | |
708 | { | |
709 | VALUE_TYPE (arg1) = lookup_pointer_type (TYPE_TARGET_TYPE (VALUE_TYPE (arg1))); | |
710 | } | |
711 | got_it: | |
712 | ||
713 | /* Now, say which argument to start evaluating from */ | |
714 | tem = 2; | |
715 | } | |
716 | else if (op == STRUCTOP_STRUCT || op == STRUCTOP_PTR) | |
717 | { | |
718 | /* Hair for method invocations */ | |
719 | int tem2; | |
720 | ||
1c486a2b | 721 | nargs++; |
bd5635a1 RP |
722 | /* First, evaluate the structure into arg2 */ |
723 | pc2 = (*pos)++; | |
a8a69e63 | 724 | tem2 = longest_to_int (exp->elts[pc2 + 1].longconst); |
1500864f | 725 | *pos += 3 + BYTES_TO_EXP_ELEM (tem2 + 1); |
bd5635a1 RP |
726 | if (noside == EVAL_SKIP) |
727 | goto nosideret; | |
728 | ||
729 | if (op == STRUCTOP_STRUCT) | |
730 | { | |
479fdd26 JK |
731 | /* If v is a variable in a register, and the user types |
732 | v.method (), this will produce an error, because v has | |
733 | no address. | |
734 | ||
735 | A possible way around this would be to allocate a | |
736 | copy of the variable on the stack, copy in the | |
737 | contents, call the function, and copy out the | |
738 | contents. I.e. convert this from call by reference | |
739 | to call by copy-return (or whatever it's called). | |
740 | However, this does not work because it is not the | |
741 | same: the method being called could stash a copy of | |
742 | the address, and then future uses through that address | |
743 | (after the method returns) would be expected to | |
744 | use the variable itself, not some copy of it. */ | |
bd5635a1 RP |
745 | arg2 = evaluate_subexp_for_address (exp, pos, noside); |
746 | } | |
747 | else | |
748 | { | |
749 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
750 | } | |
751 | /* Now, say which argument to start evaluating from */ | |
752 | tem = 2; | |
753 | } | |
754 | else | |
755 | { | |
1c486a2b PB |
756 | argvec[0] = evaluate_subexp_with_coercion (exp, pos, noside); |
757 | tem = 1; | |
758 | type = VALUE_TYPE (argvec[0]); | |
759 | if (type && TYPE_CODE (type) == TYPE_CODE_PTR) | |
760 | type = TYPE_TARGET_TYPE (type); | |
761 | if (type && TYPE_CODE (type) == TYPE_CODE_FUNC) | |
762 | { | |
763 | for (; tem <= nargs && tem <= TYPE_NFIELDS (type); tem++) | |
764 | { | |
765 | argvec[tem] = evaluate_subexp (TYPE_FIELD_TYPE (type, tem-1), | |
766 | exp, pos, noside); | |
767 | } | |
768 | } | |
bd5635a1 | 769 | } |
1c486a2b | 770 | |
bd5635a1 | 771 | for (; tem <= nargs; tem++) |
1c486a2b PB |
772 | { |
773 | /* Ensure that array expressions are coerced into pointer objects. */ | |
774 | ||
775 | argvec[tem] = evaluate_subexp_with_coercion (exp, pos, noside); | |
776 | } | |
bd5635a1 RP |
777 | |
778 | /* signal end of arglist */ | |
779 | argvec[tem] = 0; | |
780 | ||
781 | if (op == STRUCTOP_STRUCT || op == STRUCTOP_PTR) | |
782 | { | |
783 | int static_memfuncp; | |
2d67c7e9 PB |
784 | value_ptr temp = arg2; |
785 | char tstr[64]; | |
bd5635a1 RP |
786 | |
787 | argvec[1] = arg2; | |
40620258 KH |
788 | argvec[0] = 0; |
789 | strcpy(tstr, &exp->elts[pc2+2].string); | |
40620258 | 790 | if (!argvec[0]) |
bd5635a1 | 791 | { |
40620258 KH |
792 | temp = arg2; |
793 | argvec[0] = | |
794 | value_struct_elt (&temp, argvec+1, tstr, | |
795 | &static_memfuncp, | |
796 | op == STRUCTOP_STRUCT | |
797 | ? "structure" : "structure pointer"); | |
bd5635a1 | 798 | } |
40620258 KH |
799 | arg2 = value_from_longest (lookup_pointer_type(VALUE_TYPE (temp)), |
800 | VALUE_ADDRESS (temp)+VALUE_OFFSET (temp)); | |
801 | argvec[1] = arg2; | |
802 | ||
bd5635a1 RP |
803 | if (static_memfuncp) |
804 | { | |
805 | argvec[1] = argvec[0]; | |
806 | nargs--; | |
807 | argvec++; | |
808 | } | |
809 | } | |
810 | else if (op == STRUCTOP_MEMBER || op == STRUCTOP_MPTR) | |
811 | { | |
812 | argvec[1] = arg2; | |
813 | argvec[0] = arg1; | |
814 | } | |
815 | ||
ead95f8a PB |
816 | do_call_it: |
817 | ||
bd5635a1 RP |
818 | if (noside == EVAL_SKIP) |
819 | goto nosideret; | |
820 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
821 | { | |
822 | /* If the return type doesn't look like a function type, call an | |
823 | error. This can happen if somebody tries to turn a variable into | |
824 | a function call. This is here because people often want to | |
825 | call, eg, strcmp, which gdb doesn't know is a function. If | |
826 | gdb isn't asked for it's opinion (ie. through "whatis"), | |
827 | it won't offer it. */ | |
828 | ||
829 | struct type *ftype = | |
830 | TYPE_TARGET_TYPE (VALUE_TYPE (argvec[0])); | |
831 | ||
832 | if (ftype) | |
833 | return allocate_value (TYPE_TARGET_TYPE (VALUE_TYPE (argvec[0]))); | |
834 | else | |
835 | error ("Expression of type other than \"Function returning ...\" used as function"); | |
836 | } | |
e17960fb | 837 | return call_function_by_hand (argvec[0], nargs, argvec + 1); |
bd5635a1 | 838 | |
2d67c7e9 PB |
839 | case OP_F77_UNDETERMINED_ARGLIST: |
840 | ||
2d67c7e9 PB |
841 | /* Remember that in F77, functions, substring ops and |
842 | array subscript operations cannot be disambiguated | |
843 | at parse time. We have made all array subscript operations, | |
844 | substring operations as well as function calls come here | |
845 | and we now have to discover what the heck this thing actually was. | |
7398958c | 846 | If it is a function, we process just as if we got an OP_FUNCALL. */ |
2d67c7e9 | 847 | |
ead95f8a PB |
848 | nargs = longest_to_int (exp->elts[pc+1].longconst); |
849 | (*pos) += 2; | |
2d67c7e9 PB |
850 | |
851 | /* First determine the type code we are dealing with. */ | |
ead95f8a | 852 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
bcbf388e PB |
853 | type = check_typedef (VALUE_TYPE (arg1)); |
854 | code = TYPE_CODE (type); | |
2d67c7e9 PB |
855 | |
856 | switch (code) | |
857 | { | |
ead95f8a PB |
858 | case TYPE_CODE_ARRAY: |
859 | goto multi_f77_subscript; | |
860 | ||
2d67c7e9 | 861 | case TYPE_CODE_STRING: |
ead95f8a | 862 | goto op_f77_substr; |
2d67c7e9 PB |
863 | |
864 | case TYPE_CODE_PTR: | |
865 | case TYPE_CODE_FUNC: | |
ead95f8a PB |
866 | /* It's a function call. */ |
867 | /* Allocate arg vector, including space for the function to be | |
868 | called in argvec[0] and a terminating NULL */ | |
869 | argvec = (value_ptr *) alloca (sizeof (value_ptr) * (nargs + 2)); | |
870 | argvec[0] = arg1; | |
871 | tem = 1; | |
872 | for (; tem <= nargs; tem++) | |
873 | argvec[tem] = evaluate_subexp_with_coercion (exp, pos, noside); | |
874 | argvec[tem] = 0; /* signal end of arglist */ | |
875 | goto do_call_it; | |
2d67c7e9 PB |
876 | |
877 | default: | |
878 | error ("Cannot perform substring on this type"); | |
879 | } | |
880 | ||
ead95f8a | 881 | op_f77_substr: |
2d67c7e9 PB |
882 | /* We have a substring operation on our hands here, |
883 | let us get the string we will be dealing with */ | |
884 | ||
2d67c7e9 PB |
885 | /* Now evaluate the 'from' and 'to' */ |
886 | ||
887 | arg2 = evaluate_subexp_with_coercion (exp, pos, noside); | |
888 | ||
ead95f8a PB |
889 | if (nargs < 2) |
890 | return value_subscript (arg1, arg2); | |
891 | ||
2d67c7e9 PB |
892 | arg3 = evaluate_subexp_with_coercion (exp, pos, noside); |
893 | ||
2d67c7e9 PB |
894 | if (noside == EVAL_SKIP) |
895 | goto nosideret; | |
896 | ||
bcbf388e | 897 | tem2 = value_as_long (arg2); |
a56c9325 | 898 | tem3 = value_as_long (arg3); |
bcbf388e | 899 | |
ead95f8a | 900 | return value_slice (arg1, tem2, tem3 - tem2 + 1); |
2d67c7e9 | 901 | |
ead95f8a | 902 | case OP_COMPLEX: |
2d67c7e9 PB |
903 | /* We have a complex number, There should be 2 floating |
904 | point numbers that compose it */ | |
905 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
906 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
907 | ||
ead95f8a | 908 | return value_literal_complex (arg1, arg2, builtin_type_f_complex_s16); |
2d67c7e9 | 909 | |
bd5635a1 | 910 | case STRUCTOP_STRUCT: |
a8a69e63 | 911 | tem = longest_to_int (exp->elts[pc + 1].longconst); |
1500864f | 912 | (*pos) += 3 + BYTES_TO_EXP_ELEM (tem + 1); |
bd5635a1 RP |
913 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
914 | if (noside == EVAL_SKIP) | |
915 | goto nosideret; | |
916 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
917 | return value_zero (lookup_struct_elt_type (VALUE_TYPE (arg1), | |
a8a69e63 | 918 | &exp->elts[pc + 2].string, |
35fcebce | 919 | 0), |
bd5635a1 RP |
920 | lval_memory); |
921 | else | |
922 | { | |
2d67c7e9 PB |
923 | value_ptr temp = arg1; |
924 | return value_struct_elt (&temp, NULL, &exp->elts[pc + 2].string, | |
925 | NULL, "structure"); | |
bd5635a1 RP |
926 | } |
927 | ||
928 | case STRUCTOP_PTR: | |
a8a69e63 | 929 | tem = longest_to_int (exp->elts[pc + 1].longconst); |
1500864f | 930 | (*pos) += 3 + BYTES_TO_EXP_ELEM (tem + 1); |
bd5635a1 RP |
931 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
932 | if (noside == EVAL_SKIP) | |
933 | goto nosideret; | |
934 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
1500864f | 935 | return value_zero (lookup_struct_elt_type (VALUE_TYPE (arg1), |
a8a69e63 | 936 | &exp->elts[pc + 2].string, |
35fcebce | 937 | 0), |
bd5635a1 RP |
938 | lval_memory); |
939 | else | |
940 | { | |
2d67c7e9 PB |
941 | value_ptr temp = arg1; |
942 | return value_struct_elt (&temp, NULL, &exp->elts[pc + 2].string, | |
943 | NULL, "structure pointer"); | |
bd5635a1 RP |
944 | } |
945 | ||
cd10c7e3 | 946 | /* start-sanitize-gm */ |
bfe8f516 | 947 | #ifdef GENERAL_MAGIC |
cd10c7e3 SG |
948 | case STRUCTOP_FIELD: |
949 | tem = longest_to_int (exp->elts[pc + 1].longconst); | |
950 | (*pos) += 3 + BYTES_TO_EXP_ELEM (tem + 1); | |
951 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
952 | if (noside == EVAL_SKIP) | |
953 | goto nosideret; | |
954 | { | |
955 | CORE_ADDR object = value_as_long (arg1); | |
956 | struct type *type = type_of_object (object); | |
957 | ||
958 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
959 | return value_zero (lookup_struct_elt_type (type, | |
960 | &exp->elts[pc + 2].string, | |
961 | 0), | |
962 | lval_memory); | |
963 | else | |
964 | { | |
965 | value_ptr temp = value_from_longest (builtin_type_unsigned_long, | |
966 | baseptr_of_object (value_as_long(arg1))); | |
967 | ||
968 | VALUE_TYPE (temp) = type; | |
969 | return value_struct_elt (&temp, NULL, &exp->elts[pc + 2].string, | |
970 | NULL, "structure pointer"); | |
971 | } | |
972 | } | |
bfe8f516 | 973 | #endif /* GENERAL_MAGIC */ |
cd10c7e3 SG |
974 | /* end-sanitize-gm */ |
975 | ||
bd5635a1 RP |
976 | case STRUCTOP_MEMBER: |
977 | arg1 = evaluate_subexp_for_address (exp, pos, noside); | |
01be6913 | 978 | goto handle_pointer_to_member; |
bd5635a1 RP |
979 | case STRUCTOP_MPTR: |
980 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
01be6913 | 981 | handle_pointer_to_member: |
bd5635a1 RP |
982 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
983 | if (noside == EVAL_SKIP) | |
984 | goto nosideret; | |
bcbf388e PB |
985 | type = check_typedef (VALUE_TYPE (arg2)); |
986 | if (TYPE_CODE (type) != TYPE_CODE_PTR) | |
01be6913 | 987 | goto bad_pointer_to_member; |
bcbf388e | 988 | type = check_typedef (TYPE_TARGET_TYPE (type)); |
01be6913 PB |
989 | if (TYPE_CODE (type) == TYPE_CODE_METHOD) |
990 | error ("not implemented: pointer-to-method in pointer-to-member construct"); | |
991 | if (TYPE_CODE (type) != TYPE_CODE_MEMBER) | |
992 | goto bad_pointer_to_member; | |
bd5635a1 | 993 | /* Now, convert these values to an address. */ |
01be6913 PB |
994 | arg1 = value_cast (lookup_pointer_type (TYPE_DOMAIN_TYPE (type)), |
995 | arg1); | |
996 | arg3 = value_from_longest (lookup_pointer_type (TYPE_TARGET_TYPE (type)), | |
997 | value_as_long (arg1) + value_as_long (arg2)); | |
bd5635a1 | 998 | return value_ind (arg3); |
01be6913 PB |
999 | bad_pointer_to_member: |
1000 | error("non-pointer-to-member value used in pointer-to-member construct"); | |
bd5635a1 | 1001 | |
1500864f JK |
1002 | case BINOP_CONCAT: |
1003 | arg1 = evaluate_subexp_with_coercion (exp, pos, noside); | |
1004 | arg2 = evaluate_subexp_with_coercion (exp, pos, noside); | |
1005 | if (noside == EVAL_SKIP) | |
1006 | goto nosideret; | |
1007 | if (binop_user_defined_p (op, arg1, arg2)) | |
1008 | return value_x_binop (arg1, arg2, op, OP_NULL); | |
1009 | else | |
1010 | return value_concat (arg1, arg2); | |
1011 | ||
bd5635a1 RP |
1012 | case BINOP_ASSIGN: |
1013 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
1014 | arg2 = evaluate_subexp (VALUE_TYPE (arg1), exp, pos, noside); | |
1015 | if (noside == EVAL_SKIP || noside == EVAL_AVOID_SIDE_EFFECTS) | |
1016 | return arg1; | |
1017 | if (binop_user_defined_p (op, arg1, arg2)) | |
2ccb3837 | 1018 | return value_x_binop (arg1, arg2, op, OP_NULL); |
bd5635a1 RP |
1019 | else |
1020 | return value_assign (arg1, arg2); | |
1021 | ||
1022 | case BINOP_ASSIGN_MODIFY: | |
1023 | (*pos) += 2; | |
1024 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
1025 | arg2 = evaluate_subexp (VALUE_TYPE (arg1), exp, pos, noside); | |
1026 | if (noside == EVAL_SKIP || noside == EVAL_AVOID_SIDE_EFFECTS) | |
1027 | return arg1; | |
1028 | op = exp->elts[pc + 1].opcode; | |
1029 | if (binop_user_defined_p (op, arg1, arg2)) | |
1030 | return value_x_binop (arg1, arg2, BINOP_ASSIGN_MODIFY, op); | |
1031 | else if (op == BINOP_ADD) | |
1032 | arg2 = value_add (arg1, arg2); | |
1033 | else if (op == BINOP_SUB) | |
1034 | arg2 = value_sub (arg1, arg2); | |
1035 | else | |
1036 | arg2 = value_binop (arg1, arg2, op); | |
1037 | return value_assign (arg1, arg2); | |
1038 | ||
1039 | case BINOP_ADD: | |
1040 | arg1 = evaluate_subexp_with_coercion (exp, pos, noside); | |
1041 | arg2 = evaluate_subexp_with_coercion (exp, pos, noside); | |
1042 | if (noside == EVAL_SKIP) | |
1043 | goto nosideret; | |
1044 | if (binop_user_defined_p (op, arg1, arg2)) | |
2ccb3837 | 1045 | return value_x_binop (arg1, arg2, op, OP_NULL); |
bd5635a1 RP |
1046 | else |
1047 | return value_add (arg1, arg2); | |
1048 | ||
1049 | case BINOP_SUB: | |
1050 | arg1 = evaluate_subexp_with_coercion (exp, pos, noside); | |
1051 | arg2 = evaluate_subexp_with_coercion (exp, pos, noside); | |
1052 | if (noside == EVAL_SKIP) | |
1053 | goto nosideret; | |
1054 | if (binop_user_defined_p (op, arg1, arg2)) | |
2ccb3837 | 1055 | return value_x_binop (arg1, arg2, op, OP_NULL); |
bd5635a1 RP |
1056 | else |
1057 | return value_sub (arg1, arg2); | |
1058 | ||
1059 | case BINOP_MUL: | |
1060 | case BINOP_DIV: | |
1061 | case BINOP_REM: | |
76a0ffb4 | 1062 | case BINOP_MOD: |
bd5635a1 RP |
1063 | case BINOP_LSH: |
1064 | case BINOP_RSH: | |
e58de8a2 FF |
1065 | case BINOP_BITWISE_AND: |
1066 | case BINOP_BITWISE_IOR: | |
1067 | case BINOP_BITWISE_XOR: | |
bd5635a1 RP |
1068 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
1069 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
1070 | if (noside == EVAL_SKIP) | |
1071 | goto nosideret; | |
1072 | if (binop_user_defined_p (op, arg1, arg2)) | |
2ccb3837 | 1073 | return value_x_binop (arg1, arg2, op, OP_NULL); |
bd5635a1 RP |
1074 | else |
1075 | if (noside == EVAL_AVOID_SIDE_EFFECTS | |
76a0ffb4 | 1076 | && (op == BINOP_DIV || op == BINOP_REM || op == BINOP_MOD)) |
bd5635a1 RP |
1077 | return value_zero (VALUE_TYPE (arg1), not_lval); |
1078 | else | |
1079 | return value_binop (arg1, arg2, op); | |
1080 | ||
badefd28 PB |
1081 | case BINOP_RANGE: |
1082 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
1083 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
1084 | if (noside == EVAL_SKIP) | |
1085 | goto nosideret; | |
1086 | error ("':' operator used in invalid context"); | |
1087 | ||
bd5635a1 RP |
1088 | case BINOP_SUBSCRIPT: |
1089 | arg1 = evaluate_subexp_with_coercion (exp, pos, noside); | |
1090 | arg2 = evaluate_subexp_with_coercion (exp, pos, noside); | |
1091 | if (noside == EVAL_SKIP) | |
1092 | goto nosideret; | |
1093 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
35fcebce PB |
1094 | { |
1095 | /* If the user attempts to subscript something that has no target | |
1096 | type (like a plain int variable for example), then report this | |
1097 | as an error. */ | |
1098 | ||
bcbf388e | 1099 | type = TYPE_TARGET_TYPE (check_typedef (VALUE_TYPE (arg1))); |
35fcebce PB |
1100 | if (type) |
1101 | return value_zero (type, VALUE_LVAL (arg1)); | |
1102 | else | |
1103 | error ("cannot subscript something of type `%s'", | |
1104 | TYPE_NAME (VALUE_TYPE (arg1))); | |
1105 | } | |
bd5635a1 RP |
1106 | |
1107 | if (binop_user_defined_p (op, arg1, arg2)) | |
2ccb3837 | 1108 | return value_x_binop (arg1, arg2, op, OP_NULL); |
bd5635a1 RP |
1109 | else |
1110 | return value_subscript (arg1, arg2); | |
2d67c7e9 PB |
1111 | |
1112 | case BINOP_IN: | |
1113 | arg1 = evaluate_subexp_with_coercion (exp, pos, noside); | |
1114 | arg2 = evaluate_subexp_with_coercion (exp, pos, noside); | |
1115 | if (noside == EVAL_SKIP) | |
1116 | goto nosideret; | |
1117 | return value_in (arg1, arg2); | |
bd5635a1 | 1118 | |
54bbbfb4 FF |
1119 | case MULTI_SUBSCRIPT: |
1120 | (*pos) += 2; | |
1121 | nargs = longest_to_int (exp->elts[pc + 1].longconst); | |
1122 | arg1 = evaluate_subexp_with_coercion (exp, pos, noside); | |
1123 | while (nargs-- > 0) | |
1124 | { | |
1125 | arg2 = evaluate_subexp_with_coercion (exp, pos, noside); | |
1126 | /* FIXME: EVAL_SKIP handling may not be correct. */ | |
1127 | if (noside == EVAL_SKIP) | |
1128 | { | |
1129 | if (nargs > 0) | |
1130 | { | |
1131 | continue; | |
1132 | } | |
1133 | else | |
1134 | { | |
1135 | goto nosideret; | |
1136 | } | |
1137 | } | |
1138 | /* FIXME: EVAL_AVOID_SIDE_EFFECTS handling may not be correct. */ | |
1139 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
1140 | { | |
1141 | /* If the user attempts to subscript something that has no target | |
1142 | type (like a plain int variable for example), then report this | |
1143 | as an error. */ | |
1144 | ||
bcbf388e | 1145 | type = TYPE_TARGET_TYPE (check_typedef (VALUE_TYPE (arg1))); |
54bbbfb4 FF |
1146 | if (type != NULL) |
1147 | { | |
1148 | arg1 = value_zero (type, VALUE_LVAL (arg1)); | |
1149 | noside = EVAL_SKIP; | |
1150 | continue; | |
1151 | } | |
1152 | else | |
1153 | { | |
1154 | error ("cannot subscript something of type `%s'", | |
1155 | TYPE_NAME (VALUE_TYPE (arg1))); | |
1156 | } | |
1157 | } | |
1158 | ||
7398958c | 1159 | if (binop_user_defined_p (op, arg1, arg2)) |
54bbbfb4 FF |
1160 | { |
1161 | arg1 = value_x_binop (arg1, arg2, op, OP_NULL); | |
1162 | } | |
1163 | else | |
1164 | { | |
1165 | arg1 = value_subscript (arg1, arg2); | |
1166 | } | |
1167 | } | |
1168 | return (arg1); | |
1169 | ||
ead95f8a | 1170 | multi_f77_subscript: |
2d67c7e9 PB |
1171 | { |
1172 | int subscript_array[MAX_FORTRAN_DIMS+1]; /* 1-based array of | |
1173 | subscripts, max == 7 */ | |
1174 | int array_size_array[MAX_FORTRAN_DIMS+1]; | |
1175 | int ndimensions=1,i; | |
1176 | struct type *tmp_type; | |
1177 | int offset_item; /* The array offset where the item lives */ | |
2d67c7e9 | 1178 | |
2d67c7e9 PB |
1179 | if (nargs > MAX_FORTRAN_DIMS) |
1180 | error ("Too many subscripts for F77 (%d Max)", MAX_FORTRAN_DIMS); | |
bcbf388e PB |
1181 | |
1182 | tmp_type = check_typedef (VALUE_TYPE (arg1)); | |
1183 | ndimensions = calc_f77_array_dims (type); | |
2d67c7e9 PB |
1184 | |
1185 | if (nargs != ndimensions) | |
1186 | error ("Wrong number of subscripts"); | |
1187 | ||
1188 | /* Now that we know we have a legal array subscript expression | |
1189 | let us actually find out where this element exists in the array. */ | |
1190 | ||
2d67c7e9 PB |
1191 | offset_item = 0; |
1192 | for (i = 1; i <= nargs; i++) | |
1193 | { | |
1194 | /* Evaluate each subscript, It must be a legal integer in F77 */ | |
1195 | arg2 = evaluate_subexp_with_coercion (exp, pos, noside); | |
1196 | ||
2d67c7e9 PB |
1197 | /* Fill in the subscript and array size arrays */ |
1198 | ||
badefd28 | 1199 | subscript_array[i] = value_as_long (arg2); |
2d67c7e9 PB |
1200 | |
1201 | retcode = f77_get_dynamic_upperbound (tmp_type, &upper); | |
1202 | if (retcode == BOUND_FETCH_ERROR) | |
1203 | error ("Cannot obtain dynamic upper bound"); | |
1204 | ||
1205 | retcode = f77_get_dynamic_lowerbound (tmp_type, &lower); | |
1206 | if (retcode == BOUND_FETCH_ERROR) | |
1207 | error("Cannot obtain dynamic lower bound"); | |
1208 | ||
1209 | array_size_array[i] = upper - lower + 1; | |
1210 | ||
1211 | /* Zero-normalize subscripts so that offsetting will work. */ | |
1212 | ||
1213 | subscript_array[i] -= lower; | |
1214 | ||
1215 | /* If we are at the bottom of a multidimensional | |
1216 | array type then keep a ptr to the last ARRAY | |
1217 | type around for use when calling value_subscript() | |
1218 | below. This is done because we pretend to value_subscript | |
1219 | that we actually have a one-dimensional array | |
1220 | of base element type that we apply a simple | |
1221 | offset to. */ | |
1222 | ||
1223 | if (i < nargs) | |
bcbf388e | 1224 | tmp_type = check_typedef (TYPE_TARGET_TYPE (tmp_type)); |
2d67c7e9 PB |
1225 | } |
1226 | ||
1227 | /* Now let us calculate the offset for this item */ | |
1228 | ||
1229 | offset_item = subscript_array[ndimensions]; | |
1230 | ||
1231 | for (i = ndimensions - 1; i >= 1; i--) | |
1232 | offset_item = | |
1233 | array_size_array[i] * offset_item + subscript_array[i]; | |
1234 | ||
1235 | /* Construct a value node with the value of the offset */ | |
1236 | ||
1237 | arg2 = value_from_longest (builtin_type_f_integer, offset_item); | |
1238 | ||
1239 | /* Let us now play a dirty trick: we will take arg1 | |
1240 | which is a value node pointing to the topmost level | |
1241 | of the multidimensional array-set and pretend | |
1242 | that it is actually a array of the final element | |
1243 | type, this will ensure that value_subscript() | |
1244 | returns the correct type value */ | |
1245 | ||
1246 | VALUE_TYPE (arg1) = tmp_type; | |
7398958c | 1247 | return value_ind (value_add (value_coerce_array (arg1), arg2)); |
2d67c7e9 PB |
1248 | } |
1249 | ||
e58de8a2 | 1250 | case BINOP_LOGICAL_AND: |
bd5635a1 RP |
1251 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
1252 | if (noside == EVAL_SKIP) | |
1253 | { | |
1254 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
1255 | goto nosideret; | |
1256 | } | |
1257 | ||
1258 | oldpos = *pos; | |
1259 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, EVAL_AVOID_SIDE_EFFECTS); | |
1260 | *pos = oldpos; | |
1261 | ||
1262 | if (binop_user_defined_p (op, arg1, arg2)) | |
1263 | { | |
1264 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
2ccb3837 | 1265 | return value_x_binop (arg1, arg2, op, OP_NULL); |
bd5635a1 RP |
1266 | } |
1267 | else | |
1268 | { | |
e58de8a2 | 1269 | tem = value_logical_not (arg1); |
bd5635a1 RP |
1270 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, |
1271 | (tem ? EVAL_SKIP : noside)); | |
a366d882 | 1272 | return value_from_longest (LA_BOOL_TYPE, |
e58de8a2 | 1273 | (LONGEST) (!tem && !value_logical_not (arg2))); |
bd5635a1 RP |
1274 | } |
1275 | ||
e58de8a2 | 1276 | case BINOP_LOGICAL_OR: |
bd5635a1 RP |
1277 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
1278 | if (noside == EVAL_SKIP) | |
1279 | { | |
1280 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
1281 | goto nosideret; | |
1282 | } | |
1283 | ||
1284 | oldpos = *pos; | |
1285 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, EVAL_AVOID_SIDE_EFFECTS); | |
1286 | *pos = oldpos; | |
1287 | ||
1288 | if (binop_user_defined_p (op, arg1, arg2)) | |
1289 | { | |
1290 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
2ccb3837 | 1291 | return value_x_binop (arg1, arg2, op, OP_NULL); |
bd5635a1 RP |
1292 | } |
1293 | else | |
1294 | { | |
e58de8a2 | 1295 | tem = value_logical_not (arg1); |
bd5635a1 RP |
1296 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, |
1297 | (!tem ? EVAL_SKIP : noside)); | |
a366d882 | 1298 | return value_from_longest (LA_BOOL_TYPE, |
e58de8a2 | 1299 | (LONGEST) (!tem || !value_logical_not (arg2))); |
bd5635a1 RP |
1300 | } |
1301 | ||
1302 | case BINOP_EQUAL: | |
1303 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
1304 | arg2 = evaluate_subexp (VALUE_TYPE (arg1), exp, pos, noside); | |
1305 | if (noside == EVAL_SKIP) | |
1306 | goto nosideret; | |
1307 | if (binop_user_defined_p (op, arg1, arg2)) | |
1308 | { | |
2ccb3837 | 1309 | return value_x_binop (arg1, arg2, op, OP_NULL); |
bd5635a1 RP |
1310 | } |
1311 | else | |
1312 | { | |
1313 | tem = value_equal (arg1, arg2); | |
a366d882 | 1314 | return value_from_longest (LA_BOOL_TYPE, (LONGEST) tem); |
bd5635a1 RP |
1315 | } |
1316 | ||
1317 | case BINOP_NOTEQUAL: | |
1318 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
1319 | arg2 = evaluate_subexp (VALUE_TYPE (arg1), exp, pos, noside); | |
1320 | if (noside == EVAL_SKIP) | |
1321 | goto nosideret; | |
1322 | if (binop_user_defined_p (op, arg1, arg2)) | |
1323 | { | |
2ccb3837 | 1324 | return value_x_binop (arg1, arg2, op, OP_NULL); |
bd5635a1 RP |
1325 | } |
1326 | else | |
1327 | { | |
1328 | tem = value_equal (arg1, arg2); | |
a366d882 | 1329 | return value_from_longest (LA_BOOL_TYPE, (LONGEST) ! tem); |
bd5635a1 RP |
1330 | } |
1331 | ||
1332 | case BINOP_LESS: | |
1333 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
1334 | arg2 = evaluate_subexp (VALUE_TYPE (arg1), exp, pos, noside); | |
1335 | if (noside == EVAL_SKIP) | |
1336 | goto nosideret; | |
1337 | if (binop_user_defined_p (op, arg1, arg2)) | |
1338 | { | |
2ccb3837 | 1339 | return value_x_binop (arg1, arg2, op, OP_NULL); |
bd5635a1 RP |
1340 | } |
1341 | else | |
1342 | { | |
1343 | tem = value_less (arg1, arg2); | |
a366d882 | 1344 | return value_from_longest (LA_BOOL_TYPE, (LONGEST) tem); |
bd5635a1 RP |
1345 | } |
1346 | ||
1347 | case BINOP_GTR: | |
1348 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
1349 | arg2 = evaluate_subexp (VALUE_TYPE (arg1), exp, pos, noside); | |
1350 | if (noside == EVAL_SKIP) | |
1351 | goto nosideret; | |
1352 | if (binop_user_defined_p (op, arg1, arg2)) | |
1353 | { | |
2ccb3837 | 1354 | return value_x_binop (arg1, arg2, op, OP_NULL); |
bd5635a1 RP |
1355 | } |
1356 | else | |
1357 | { | |
1358 | tem = value_less (arg2, arg1); | |
a366d882 | 1359 | return value_from_longest (LA_BOOL_TYPE, (LONGEST) tem); |
bd5635a1 RP |
1360 | } |
1361 | ||
1362 | case BINOP_GEQ: | |
1363 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
1364 | arg2 = evaluate_subexp (VALUE_TYPE (arg1), exp, pos, noside); | |
1365 | if (noside == EVAL_SKIP) | |
1366 | goto nosideret; | |
1367 | if (binop_user_defined_p (op, arg1, arg2)) | |
1368 | { | |
2ccb3837 | 1369 | return value_x_binop (arg1, arg2, op, OP_NULL); |
bd5635a1 RP |
1370 | } |
1371 | else | |
1372 | { | |
8f86a4e4 | 1373 | tem = value_less (arg2, arg1) || value_equal (arg1, arg2); |
a366d882 | 1374 | return value_from_longest (LA_BOOL_TYPE, (LONGEST) tem); |
bd5635a1 RP |
1375 | } |
1376 | ||
1377 | case BINOP_LEQ: | |
1378 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
1379 | arg2 = evaluate_subexp (VALUE_TYPE (arg1), exp, pos, noside); | |
1380 | if (noside == EVAL_SKIP) | |
1381 | goto nosideret; | |
1382 | if (binop_user_defined_p (op, arg1, arg2)) | |
1383 | { | |
2ccb3837 | 1384 | return value_x_binop (arg1, arg2, op, OP_NULL); |
bd5635a1 RP |
1385 | } |
1386 | else | |
1387 | { | |
8f86a4e4 | 1388 | tem = value_less (arg1, arg2) || value_equal (arg1, arg2); |
a366d882 | 1389 | return value_from_longest (LA_BOOL_TYPE, (LONGEST) tem); |
bd5635a1 RP |
1390 | } |
1391 | ||
1392 | case BINOP_REPEAT: | |
1393 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
1394 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
1395 | if (noside == EVAL_SKIP) | |
1396 | goto nosideret; | |
1397 | if (TYPE_CODE (VALUE_TYPE (arg2)) != TYPE_CODE_INT) | |
1398 | error ("Non-integral right operand for \"@\" operator."); | |
1399 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
2b576293 | 1400 | { |
2b576293 C |
1401 | return allocate_repeat_value (VALUE_TYPE (arg1), |
1402 | longest_to_int (value_as_long (arg2))); | |
1403 | } | |
bd5635a1 | 1404 | else |
2ccb3837 | 1405 | return value_repeat (arg1, longest_to_int (value_as_long (arg2))); |
bd5635a1 RP |
1406 | |
1407 | case BINOP_COMMA: | |
1408 | evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
1409 | return evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
1410 | ||
1411 | case UNOP_NEG: | |
1412 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
1413 | if (noside == EVAL_SKIP) | |
1414 | goto nosideret; | |
1415 | if (unop_user_defined_p (op, arg1)) | |
1416 | return value_x_unop (arg1, op); | |
1417 | else | |
1418 | return value_neg (arg1); | |
1419 | ||
e58de8a2 | 1420 | case UNOP_COMPLEMENT: |
5f00ca54 JK |
1421 | /* C++: check for and handle destructor names. */ |
1422 | op = exp->elts[*pos].opcode; | |
1423 | ||
bd5635a1 RP |
1424 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
1425 | if (noside == EVAL_SKIP) | |
1426 | goto nosideret; | |
e58de8a2 FF |
1427 | if (unop_user_defined_p (UNOP_COMPLEMENT, arg1)) |
1428 | return value_x_unop (arg1, UNOP_COMPLEMENT); | |
bd5635a1 | 1429 | else |
e58de8a2 | 1430 | return value_complement (arg1); |
bd5635a1 | 1431 | |
e58de8a2 | 1432 | case UNOP_LOGICAL_NOT: |
bd5635a1 RP |
1433 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
1434 | if (noside == EVAL_SKIP) | |
1435 | goto nosideret; | |
1436 | if (unop_user_defined_p (op, arg1)) | |
1437 | return value_x_unop (arg1, op); | |
1438 | else | |
2ccb3837 | 1439 | return value_from_longest (builtin_type_int, |
e58de8a2 | 1440 | (LONGEST) value_logical_not (arg1)); |
bd5635a1 RP |
1441 | |
1442 | case UNOP_IND: | |
1443 | if (expect_type && TYPE_CODE (expect_type) == TYPE_CODE_PTR) | |
bcbf388e | 1444 | expect_type = TYPE_TARGET_TYPE (check_typedef (expect_type)); |
bd5635a1 RP |
1445 | arg1 = evaluate_subexp (expect_type, exp, pos, noside); |
1446 | if (noside == EVAL_SKIP) | |
1447 | goto nosideret; | |
1448 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
1449 | { | |
bcbf388e PB |
1450 | type = check_typedef (VALUE_TYPE (arg1)); |
1451 | if (TYPE_CODE (type) == TYPE_CODE_PTR | |
1452 | || TYPE_CODE (type) == TYPE_CODE_REF | |
bd5635a1 | 1453 | /* In C you can dereference an array to get the 1st elt. */ |
bcbf388e | 1454 | || TYPE_CODE (type) == TYPE_CODE_ARRAY |
bd5635a1 | 1455 | ) |
bcbf388e | 1456 | return value_zero (TYPE_TARGET_TYPE (type), |
bd5635a1 | 1457 | lval_memory); |
bcbf388e | 1458 | else if (TYPE_CODE (type) == TYPE_CODE_INT) |
bd5635a1 RP |
1459 | /* GDB allows dereferencing an int. */ |
1460 | return value_zero (builtin_type_int, lval_memory); | |
1461 | else | |
1462 | error ("Attempt to take contents of a non-pointer value."); | |
1463 | } | |
1464 | return value_ind (arg1); | |
1465 | ||
1466 | case UNOP_ADDR: | |
1467 | /* C++: check for and handle pointer to members. */ | |
1468 | ||
1469 | op = exp->elts[*pos].opcode; | |
1470 | ||
1471 | if (noside == EVAL_SKIP) | |
1472 | { | |
1473 | if (op == OP_SCOPE) | |
1474 | { | |
a8a69e63 | 1475 | int temm = longest_to_int (exp->elts[pc+3].longconst); |
1500864f | 1476 | (*pos) += 3 + BYTES_TO_EXP_ELEM (temm + 1); |
bd5635a1 RP |
1477 | } |
1478 | else | |
1479 | evaluate_subexp (expect_type, exp, pos, EVAL_SKIP); | |
1480 | goto nosideret; | |
1481 | } | |
1482 | ||
01be6913 | 1483 | return evaluate_subexp_for_address (exp, pos, noside); |
bd5635a1 RP |
1484 | |
1485 | case UNOP_SIZEOF: | |
1486 | if (noside == EVAL_SKIP) | |
1487 | { | |
1488 | evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP); | |
1489 | goto nosideret; | |
1490 | } | |
1491 | return evaluate_subexp_for_sizeof (exp, pos); | |
1492 | ||
1493 | case UNOP_CAST: | |
1494 | (*pos) += 2; | |
2d67c7e9 PB |
1495 | type = exp->elts[pc + 1].type; |
1496 | arg1 = evaluate_subexp (type, exp, pos, noside); | |
bd5635a1 RP |
1497 | if (noside == EVAL_SKIP) |
1498 | goto nosideret; | |
2d67c7e9 PB |
1499 | if (type != VALUE_TYPE (arg1)) |
1500 | arg1 = value_cast (type, arg1); | |
1501 | return arg1; | |
bd5635a1 RP |
1502 | |
1503 | case UNOP_MEMVAL: | |
1504 | (*pos) += 2; | |
1505 | arg1 = evaluate_subexp (expect_type, exp, pos, noside); | |
1506 | if (noside == EVAL_SKIP) | |
1507 | goto nosideret; | |
1508 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
1509 | return value_zero (exp->elts[pc + 1].type, lval_memory); | |
1510 | else | |
1511 | return value_at_lazy (exp->elts[pc + 1].type, | |
2ccb3837 | 1512 | value_as_pointer (arg1)); |
bd5635a1 RP |
1513 | |
1514 | case UNOP_PREINCREMENT: | |
1515 | arg1 = evaluate_subexp (expect_type, exp, pos, noside); | |
1516 | if (noside == EVAL_SKIP || noside == EVAL_AVOID_SIDE_EFFECTS) | |
1517 | return arg1; | |
1518 | else if (unop_user_defined_p (op, arg1)) | |
1519 | { | |
1520 | return value_x_unop (arg1, op); | |
1521 | } | |
1522 | else | |
1523 | { | |
2ccb3837 | 1524 | arg2 = value_add (arg1, value_from_longest (builtin_type_char, |
bd5635a1 RP |
1525 | (LONGEST) 1)); |
1526 | return value_assign (arg1, arg2); | |
1527 | } | |
1528 | ||
1529 | case UNOP_PREDECREMENT: | |
1530 | arg1 = evaluate_subexp (expect_type, exp, pos, noside); | |
1531 | if (noside == EVAL_SKIP || noside == EVAL_AVOID_SIDE_EFFECTS) | |
1532 | return arg1; | |
1533 | else if (unop_user_defined_p (op, arg1)) | |
1534 | { | |
1535 | return value_x_unop (arg1, op); | |
1536 | } | |
1537 | else | |
1538 | { | |
2ccb3837 | 1539 | arg2 = value_sub (arg1, value_from_longest (builtin_type_char, |
bd5635a1 RP |
1540 | (LONGEST) 1)); |
1541 | return value_assign (arg1, arg2); | |
1542 | } | |
1543 | ||
1544 | case UNOP_POSTINCREMENT: | |
1545 | arg1 = evaluate_subexp (expect_type, exp, pos, noside); | |
1546 | if (noside == EVAL_SKIP || noside == EVAL_AVOID_SIDE_EFFECTS) | |
1547 | return arg1; | |
1548 | else if (unop_user_defined_p (op, arg1)) | |
1549 | { | |
1550 | return value_x_unop (arg1, op); | |
1551 | } | |
1552 | else | |
1553 | { | |
2ccb3837 | 1554 | arg2 = value_add (arg1, value_from_longest (builtin_type_char, |
bd5635a1 RP |
1555 | (LONGEST) 1)); |
1556 | value_assign (arg1, arg2); | |
1557 | return arg1; | |
1558 | } | |
1559 | ||
1560 | case UNOP_POSTDECREMENT: | |
1561 | arg1 = evaluate_subexp (expect_type, exp, pos, noside); | |
1562 | if (noside == EVAL_SKIP || noside == EVAL_AVOID_SIDE_EFFECTS) | |
1563 | return arg1; | |
1564 | else if (unop_user_defined_p (op, arg1)) | |
1565 | { | |
1566 | return value_x_unop (arg1, op); | |
1567 | } | |
1568 | else | |
1569 | { | |
2ccb3837 | 1570 | arg2 = value_sub (arg1, value_from_longest (builtin_type_char, |
bd5635a1 RP |
1571 | (LONGEST) 1)); |
1572 | value_assign (arg1, arg2); | |
1573 | return arg1; | |
1574 | } | |
1575 | ||
1576 | case OP_THIS: | |
1577 | (*pos) += 1; | |
1578 | return value_of_this (1); | |
1579 | ||
1500864f JK |
1580 | case OP_TYPE: |
1581 | error ("Attempt to use a type name as an expression"); | |
1582 | ||
bd5635a1 | 1583 | default: |
1500864f JK |
1584 | /* Removing this case and compiling with gcc -Wall reveals that |
1585 | a lot of cases are hitting this case. Some of these should | |
1586 | probably be removed from expression.h (e.g. do we need a BINOP_SCOPE | |
1587 | and an OP_SCOPE?); others are legitimate expressions which are | |
1588 | (apparently) not fully implemented. | |
1589 | ||
1590 | If there are any cases landing here which mean a user error, | |
1591 | then they should be separate cases, with more descriptive | |
1592 | error messages. */ | |
1593 | ||
1594 | error ("\ | |
2d67c7e9 | 1595 | GDB does not (yet) know how to evaluate that kind of expression"); |
bd5635a1 RP |
1596 | } |
1597 | ||
1598 | nosideret: | |
2ccb3837 | 1599 | return value_from_longest (builtin_type_long, (LONGEST) 1); |
bd5635a1 RP |
1600 | } |
1601 | \f | |
1602 | /* Evaluate a subexpression of EXP, at index *POS, | |
1603 | and return the address of that subexpression. | |
1604 | Advance *POS over the subexpression. | |
1605 | If the subexpression isn't an lvalue, get an error. | |
1606 | NOSIDE may be EVAL_AVOID_SIDE_EFFECTS; | |
1607 | then only the type of the result need be correct. */ | |
1608 | ||
2d67c7e9 | 1609 | static value_ptr |
bd5635a1 RP |
1610 | evaluate_subexp_for_address (exp, pos, noside) |
1611 | register struct expression *exp; | |
1612 | register int *pos; | |
1613 | enum noside noside; | |
1614 | { | |
1615 | enum exp_opcode op; | |
1616 | register int pc; | |
e17960fb | 1617 | struct symbol *var; |
bd5635a1 RP |
1618 | |
1619 | pc = (*pos); | |
1620 | op = exp->elts[pc].opcode; | |
1621 | ||
1622 | switch (op) | |
1623 | { | |
1624 | case UNOP_IND: | |
1625 | (*pos)++; | |
1626 | return evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
1627 | ||
1628 | case UNOP_MEMVAL: | |
1629 | (*pos) += 3; | |
1630 | return value_cast (lookup_pointer_type (exp->elts[pc + 1].type), | |
1631 | evaluate_subexp (NULL_TYPE, exp, pos, noside)); | |
1632 | ||
1633 | case OP_VAR_VALUE: | |
479fdd26 | 1634 | var = exp->elts[pc + 2].symbol; |
e17960fb JG |
1635 | |
1636 | /* C++: The "address" of a reference should yield the address | |
1637 | * of the object pointed to. Let value_addr() deal with it. */ | |
1638 | if (TYPE_CODE (SYMBOL_TYPE (var)) == TYPE_CODE_REF) | |
1639 | goto default_case; | |
1640 | ||
479fdd26 | 1641 | (*pos) += 4; |
bd5635a1 RP |
1642 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
1643 | { | |
1644 | struct type *type = | |
e17960fb JG |
1645 | lookup_pointer_type (SYMBOL_TYPE (var)); |
1646 | enum address_class sym_class = SYMBOL_CLASS (var); | |
bd5635a1 RP |
1647 | |
1648 | if (sym_class == LOC_CONST | |
1649 | || sym_class == LOC_CONST_BYTES | |
1650 | || sym_class == LOC_REGISTER | |
1651 | || sym_class == LOC_REGPARM) | |
1652 | error ("Attempt to take address of register or constant."); | |
1653 | ||
1654 | return | |
1655 | value_zero (type, not_lval); | |
1656 | } | |
1657 | else | |
479fdd26 JK |
1658 | return |
1659 | locate_var_value | |
1660 | (var, | |
1661 | block_innermost_frame (exp->elts[pc + 1].block)); | |
bd5635a1 RP |
1662 | |
1663 | default: | |
e17960fb | 1664 | default_case: |
bd5635a1 RP |
1665 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
1666 | { | |
2d67c7e9 | 1667 | value_ptr x = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
bd5635a1 | 1668 | if (VALUE_LVAL (x) == lval_memory) |
0a5d35ed | 1669 | return value_zero (lookup_pointer_type (VALUE_TYPE (x)), |
bd5635a1 RP |
1670 | not_lval); |
1671 | else | |
1672 | error ("Attempt to take address of non-lval"); | |
1673 | } | |
1674 | return value_addr (evaluate_subexp (NULL_TYPE, exp, pos, noside)); | |
1675 | } | |
1676 | } | |
1677 | ||
1678 | /* Evaluate like `evaluate_subexp' except coercing arrays to pointers. | |
fb6e675f FF |
1679 | When used in contexts where arrays will be coerced anyway, this is |
1680 | equivalent to `evaluate_subexp' but much faster because it avoids | |
479fdd26 JK |
1681 | actually fetching array contents (perhaps obsolete now that we have |
1682 | VALUE_LAZY). | |
fb6e675f FF |
1683 | |
1684 | Note that we currently only do the coercion for C expressions, where | |
1685 | arrays are zero based and the coercion is correct. For other languages, | |
1686 | with nonzero based arrays, coercion loses. Use CAST_IS_CONVERSION | |
1687 | to decide if coercion is appropriate. | |
1688 | ||
479fdd26 | 1689 | */ |
bd5635a1 | 1690 | |
7398958c | 1691 | value_ptr |
bd5635a1 RP |
1692 | evaluate_subexp_with_coercion (exp, pos, noside) |
1693 | register struct expression *exp; | |
1694 | register int *pos; | |
1695 | enum noside noside; | |
1696 | { | |
1697 | register enum exp_opcode op; | |
1698 | register int pc; | |
2d67c7e9 | 1699 | register value_ptr val; |
e17960fb | 1700 | struct symbol *var; |
bd5635a1 RP |
1701 | |
1702 | pc = (*pos); | |
1703 | op = exp->elts[pc].opcode; | |
1704 | ||
1705 | switch (op) | |
1706 | { | |
1707 | case OP_VAR_VALUE: | |
479fdd26 | 1708 | var = exp->elts[pc + 2].symbol; |
bcbf388e | 1709 | if (TYPE_CODE (check_typedef (SYMBOL_TYPE (var))) == TYPE_CODE_ARRAY |
fb6e675f | 1710 | && CAST_IS_CONVERSION) |
bd5635a1 | 1711 | { |
479fdd26 JK |
1712 | (*pos) += 4; |
1713 | val = | |
1714 | locate_var_value | |
1715 | (var, block_innermost_frame (exp->elts[pc + 1].block)); | |
e17960fb | 1716 | return value_cast (lookup_pointer_type (TYPE_TARGET_TYPE (SYMBOL_TYPE (var))), |
bd5635a1 RP |
1717 | val); |
1718 | } | |
479fdd26 JK |
1719 | /* FALLTHROUGH */ |
1720 | ||
1721 | default: | |
1722 | return evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
bd5635a1 RP |
1723 | } |
1724 | } | |
1725 | ||
1726 | /* Evaluate a subexpression of EXP, at index *POS, | |
1727 | and return a value for the size of that subexpression. | |
1728 | Advance *POS over the subexpression. */ | |
1729 | ||
2d67c7e9 | 1730 | static value_ptr |
bd5635a1 RP |
1731 | evaluate_subexp_for_sizeof (exp, pos) |
1732 | register struct expression *exp; | |
1733 | register int *pos; | |
1734 | { | |
1735 | enum exp_opcode op; | |
1736 | register int pc; | |
bcbf388e | 1737 | struct type *type; |
2d67c7e9 | 1738 | value_ptr val; |
bd5635a1 RP |
1739 | |
1740 | pc = (*pos); | |
1741 | op = exp->elts[pc].opcode; | |
1742 | ||
1743 | switch (op) | |
1744 | { | |
1745 | /* This case is handled specially | |
1746 | so that we avoid creating a value for the result type. | |
1747 | If the result type is very big, it's desirable not to | |
1748 | create a value unnecessarily. */ | |
1749 | case UNOP_IND: | |
1750 | (*pos)++; | |
1751 | val = evaluate_subexp (NULL_TYPE, exp, pos, EVAL_AVOID_SIDE_EFFECTS); | |
bcbf388e PB |
1752 | type = check_typedef (VALUE_TYPE (val)); |
1753 | type = check_typedef (TYPE_TARGET_TYPE (type)); | |
2ccb3837 | 1754 | return value_from_longest (builtin_type_int, (LONGEST) |
bcbf388e | 1755 | TYPE_LENGTH (type)); |
bd5635a1 RP |
1756 | |
1757 | case UNOP_MEMVAL: | |
1758 | (*pos) += 3; | |
bcbf388e PB |
1759 | type = check_typedef (exp->elts[pc + 1].type); |
1760 | return value_from_longest (builtin_type_int, | |
1761 | (LONGEST) TYPE_LENGTH (type)); | |
bd5635a1 RP |
1762 | |
1763 | case OP_VAR_VALUE: | |
479fdd26 | 1764 | (*pos) += 4; |
bcbf388e | 1765 | type = check_typedef (SYMBOL_TYPE (exp->elts[pc + 2].symbol)); |
479fdd26 | 1766 | return |
bcbf388e | 1767 | value_from_longest (builtin_type_int, (LONGEST) TYPE_LENGTH (type)); |
bd5635a1 RP |
1768 | |
1769 | default: | |
1770 | val = evaluate_subexp (NULL_TYPE, exp, pos, EVAL_AVOID_SIDE_EFFECTS); | |
2ccb3837 | 1771 | return value_from_longest (builtin_type_int, |
bd5635a1 RP |
1772 | (LONGEST) TYPE_LENGTH (VALUE_TYPE (val))); |
1773 | } | |
1774 | } | |
0a5d35ed SG |
1775 | |
1776 | /* Parse a type expression in the string [P..P+LENGTH). */ | |
1777 | ||
1778 | struct type * | |
1779 | parse_and_eval_type (p, length) | |
1780 | char *p; | |
1781 | int length; | |
1782 | { | |
1783 | char *tmp = (char *)alloca (length + 4); | |
1784 | struct expression *expr; | |
1785 | tmp[0] = '('; | |
35fcebce | 1786 | memcpy (tmp+1, p, length); |
0a5d35ed SG |
1787 | tmp[length+1] = ')'; |
1788 | tmp[length+2] = '0'; | |
1789 | tmp[length+3] = '\0'; | |
1790 | expr = parse_expression (tmp); | |
1791 | if (expr->elts[0].opcode != UNOP_CAST) | |
1792 | error ("Internal error in eval_type."); | |
1793 | return expr->elts[1].type; | |
1794 | } | |
2d67c7e9 PB |
1795 | |
1796 | int | |
1797 | calc_f77_array_dims (array_type) | |
1798 | struct type *array_type; | |
1799 | { | |
1800 | int ndimen = 1; | |
1801 | struct type *tmp_type; | |
1802 | ||
1803 | if ((TYPE_CODE(array_type) != TYPE_CODE_ARRAY)) | |
1804 | error ("Can't get dimensions for a non-array type"); | |
1805 | ||
1806 | tmp_type = array_type; | |
1807 | ||
477b2425 | 1808 | while ((tmp_type = TYPE_TARGET_TYPE (tmp_type))) |
2d67c7e9 PB |
1809 | { |
1810 | if (TYPE_CODE (tmp_type) == TYPE_CODE_ARRAY) | |
1811 | ++ndimen; | |
1812 | } | |
1813 | return ndimen; | |
1814 | } |