Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Evaluate expressions for GDB. |
1bac305b | 2 | |
6aba47ca | 3 | Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, |
0fb0cc75 | 4 | 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2005, 2006, 2007, 2008, |
4c38e0a4 | 5 | 2009, 2010 Free Software Foundation, Inc. |
c906108c | 6 | |
c5aa993b | 7 | This file is part of GDB. |
c906108c | 8 | |
c5aa993b JM |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 12 | (at your option) any later version. |
c906108c | 13 | |
c5aa993b JM |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
c906108c | 18 | |
c5aa993b | 19 | You should have received a copy of the GNU General Public License |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
21 | |
22 | #include "defs.h" | |
23 | #include "gdb_string.h" | |
24 | #include "symtab.h" | |
25 | #include "gdbtypes.h" | |
26 | #include "value.h" | |
27 | #include "expression.h" | |
28 | #include "target.h" | |
29 | #include "frame.h" | |
c5aa993b JM |
30 | #include "language.h" /* For CAST_IS_CONVERSION */ |
31 | #include "f-lang.h" /* for array bound stuff */ | |
015a42b4 | 32 | #include "cp-abi.h" |
04714b91 | 33 | #include "infcall.h" |
a9fa03de AF |
34 | #include "objc-lang.h" |
35 | #include "block.h" | |
5f9769d1 | 36 | #include "parser-defs.h" |
d3cbe7ef | 37 | #include "cp-support.h" |
5e572bb4 DJ |
38 | #include "ui-out.h" |
39 | #include "exceptions.h" | |
123dc839 | 40 | #include "regcache.h" |
029a67e4 | 41 | #include "user-regs.h" |
79a45b7d | 42 | #include "valprint.h" |
072bba3b KS |
43 | #include "gdb_obstack.h" |
44 | #include "objfiles.h" | |
bc3b79fd | 45 | #include "python/python.h" |
0cf6dd15 | 46 | #include "wrapper.h" |
c906108c | 47 | |
0d5de010 DJ |
48 | #include "gdb_assert.h" |
49 | ||
bc3b79fd TJB |
50 | #include <ctype.h> |
51 | ||
c5aa993b | 52 | /* This is defined in valops.c */ |
c906108c SS |
53 | extern int overload_resolution; |
54 | ||
c906108c SS |
55 | /* Prototypes for local functions. */ |
56 | ||
61051030 | 57 | static struct value *evaluate_subexp_for_sizeof (struct expression *, int *); |
c906108c | 58 | |
61051030 AC |
59 | static struct value *evaluate_subexp_for_address (struct expression *, |
60 | int *, enum noside); | |
c906108c | 61 | |
a14ed312 | 62 | static char *get_label (struct expression *, int *); |
c906108c | 63 | |
61051030 AC |
64 | static struct value *evaluate_struct_tuple (struct value *, |
65 | struct expression *, int *, | |
66 | enum noside, int); | |
c906108c | 67 | |
61051030 AC |
68 | static LONGEST init_array_element (struct value *, struct value *, |
69 | struct expression *, int *, enum noside, | |
70 | LONGEST, LONGEST); | |
c906108c | 71 | |
4b27a620 | 72 | struct value * |
aa1ee363 AC |
73 | evaluate_subexp (struct type *expect_type, struct expression *exp, |
74 | int *pos, enum noside noside) | |
c906108c | 75 | { |
5f9769d1 PH |
76 | return (*exp->language_defn->la_exp_desc->evaluate_exp) |
77 | (expect_type, exp, pos, noside); | |
c906108c SS |
78 | } |
79 | \f | |
80 | /* Parse the string EXP as a C expression, evaluate it, | |
81 | and return the result as a number. */ | |
82 | ||
83 | CORE_ADDR | |
fba45db2 | 84 | parse_and_eval_address (char *exp) |
c906108c SS |
85 | { |
86 | struct expression *expr = parse_expression (exp); | |
52f0bd74 AC |
87 | CORE_ADDR addr; |
88 | struct cleanup *old_chain = | |
62995fc4 | 89 | make_cleanup (free_current_contents, &expr); |
c906108c | 90 | |
1aa20aa8 | 91 | addr = value_as_address (evaluate_expression (expr)); |
c906108c SS |
92 | do_cleanups (old_chain); |
93 | return addr; | |
94 | } | |
95 | ||
96 | /* Like parse_and_eval_address but takes a pointer to a char * variable | |
97 | and advanced that variable across the characters parsed. */ | |
98 | ||
99 | CORE_ADDR | |
fba45db2 | 100 | parse_and_eval_address_1 (char **expptr) |
c906108c | 101 | { |
c5aa993b | 102 | struct expression *expr = parse_exp_1 (expptr, (struct block *) 0, 0); |
52f0bd74 AC |
103 | CORE_ADDR addr; |
104 | struct cleanup *old_chain = | |
62995fc4 | 105 | make_cleanup (free_current_contents, &expr); |
c906108c | 106 | |
1aa20aa8 | 107 | addr = value_as_address (evaluate_expression (expr)); |
c906108c SS |
108 | do_cleanups (old_chain); |
109 | return addr; | |
110 | } | |
111 | ||
bb518678 DT |
112 | /* Like parse_and_eval_address, but treats the value of the expression |
113 | as an integer, not an address, returns a LONGEST, not a CORE_ADDR */ | |
114 | LONGEST | |
115 | parse_and_eval_long (char *exp) | |
116 | { | |
117 | struct expression *expr = parse_expression (exp); | |
52f0bd74 AC |
118 | LONGEST retval; |
119 | struct cleanup *old_chain = | |
bb518678 DT |
120 | make_cleanup (free_current_contents, &expr); |
121 | ||
122 | retval = value_as_long (evaluate_expression (expr)); | |
123 | do_cleanups (old_chain); | |
124 | return (retval); | |
125 | } | |
126 | ||
61051030 | 127 | struct value * |
fba45db2 | 128 | parse_and_eval (char *exp) |
c906108c SS |
129 | { |
130 | struct expression *expr = parse_expression (exp); | |
61051030 | 131 | struct value *val; |
52f0bd74 | 132 | struct cleanup *old_chain = |
62995fc4 | 133 | make_cleanup (free_current_contents, &expr); |
c906108c SS |
134 | |
135 | val = evaluate_expression (expr); | |
136 | do_cleanups (old_chain); | |
137 | return val; | |
138 | } | |
139 | ||
140 | /* Parse up to a comma (or to a closeparen) | |
141 | in the string EXPP as an expression, evaluate it, and return the value. | |
142 | EXPP is advanced to point to the comma. */ | |
143 | ||
61051030 | 144 | struct value * |
fba45db2 | 145 | parse_to_comma_and_eval (char **expp) |
c906108c SS |
146 | { |
147 | struct expression *expr = parse_exp_1 (expp, (struct block *) 0, 1); | |
61051030 | 148 | struct value *val; |
52f0bd74 | 149 | struct cleanup *old_chain = |
62995fc4 | 150 | make_cleanup (free_current_contents, &expr); |
c906108c SS |
151 | |
152 | val = evaluate_expression (expr); | |
153 | do_cleanups (old_chain); | |
154 | return val; | |
155 | } | |
156 | \f | |
157 | /* Evaluate an expression in internal prefix form | |
158 | such as is constructed by parse.y. | |
159 | ||
160 | See expression.h for info on the format of an expression. */ | |
161 | ||
61051030 | 162 | struct value * |
fba45db2 | 163 | evaluate_expression (struct expression *exp) |
c906108c SS |
164 | { |
165 | int pc = 0; | |
d7f9d729 | 166 | |
c906108c SS |
167 | return evaluate_subexp (NULL_TYPE, exp, &pc, EVAL_NORMAL); |
168 | } | |
169 | ||
170 | /* Evaluate an expression, avoiding all memory references | |
171 | and getting a value whose type alone is correct. */ | |
172 | ||
61051030 | 173 | struct value * |
fba45db2 | 174 | evaluate_type (struct expression *exp) |
c906108c SS |
175 | { |
176 | int pc = 0; | |
d7f9d729 | 177 | |
c906108c SS |
178 | return evaluate_subexp (NULL_TYPE, exp, &pc, EVAL_AVOID_SIDE_EFFECTS); |
179 | } | |
180 | ||
65d12d83 TT |
181 | /* Evaluate a subexpression, avoiding all memory references and |
182 | getting a value whose type alone is correct. */ | |
183 | ||
184 | struct value * | |
185 | evaluate_subexpression_type (struct expression *exp, int subexp) | |
186 | { | |
187 | return evaluate_subexp (NULL_TYPE, exp, &subexp, EVAL_AVOID_SIDE_EFFECTS); | |
188 | } | |
189 | ||
0cf6dd15 TJB |
190 | /* Find the current value of a watchpoint on EXP. Return the value in |
191 | *VALP and *RESULTP and the chain of intermediate and final values | |
192 | in *VAL_CHAIN. RESULTP and VAL_CHAIN may be NULL if the caller does | |
193 | not need them. | |
194 | ||
195 | If a memory error occurs while evaluating the expression, *RESULTP will | |
196 | be set to NULL. *RESULTP may be a lazy value, if the result could | |
197 | not be read from memory. It is used to determine whether a value | |
198 | is user-specified (we should watch the whole value) or intermediate | |
199 | (we should watch only the bit used to locate the final value). | |
200 | ||
201 | If the final value, or any intermediate value, could not be read | |
202 | from memory, *VALP will be set to NULL. *VAL_CHAIN will still be | |
203 | set to any referenced values. *VALP will never be a lazy value. | |
204 | This is the value which we store in struct breakpoint. | |
205 | ||
206 | If VAL_CHAIN is non-NULL, *VAL_CHAIN will be released from the | |
207 | value chain. The caller must free the values individually. If | |
208 | VAL_CHAIN is NULL, all generated values will be left on the value | |
209 | chain. */ | |
210 | ||
211 | void | |
212 | fetch_subexp_value (struct expression *exp, int *pc, struct value **valp, | |
213 | struct value **resultp, struct value **val_chain) | |
214 | { | |
215 | struct value *mark, *new_mark, *result; | |
216 | volatile struct gdb_exception ex; | |
217 | ||
218 | *valp = NULL; | |
219 | if (resultp) | |
220 | *resultp = NULL; | |
221 | if (val_chain) | |
222 | *val_chain = NULL; | |
223 | ||
224 | /* Evaluate the expression. */ | |
225 | mark = value_mark (); | |
226 | result = NULL; | |
227 | ||
228 | TRY_CATCH (ex, RETURN_MASK_ALL) | |
229 | { | |
230 | result = evaluate_subexp (NULL_TYPE, exp, pc, EVAL_NORMAL); | |
231 | } | |
232 | if (ex.reason < 0) | |
233 | { | |
234 | /* Ignore memory errors, we want watchpoints pointing at | |
235 | inaccessible memory to still be created; otherwise, throw the | |
236 | error to some higher catcher. */ | |
237 | switch (ex.error) | |
238 | { | |
239 | case MEMORY_ERROR: | |
240 | break; | |
241 | default: | |
242 | throw_exception (ex); | |
243 | break; | |
244 | } | |
245 | } | |
246 | ||
247 | new_mark = value_mark (); | |
248 | if (mark == new_mark) | |
249 | return; | |
250 | if (resultp) | |
251 | *resultp = result; | |
252 | ||
253 | /* Make sure it's not lazy, so that after the target stops again we | |
254 | have a non-lazy previous value to compare with. */ | |
255 | if (result != NULL | |
256 | && (!value_lazy (result) || gdb_value_fetch_lazy (result))) | |
257 | *valp = result; | |
258 | ||
259 | if (val_chain) | |
260 | { | |
261 | /* Return the chain of intermediate values. We use this to | |
262 | decide which addresses to watch. */ | |
263 | *val_chain = new_mark; | |
264 | value_release_to_mark (mark); | |
265 | } | |
266 | } | |
267 | ||
65d12d83 TT |
268 | /* Extract a field operation from an expression. If the subexpression |
269 | of EXP starting at *SUBEXP is not a structure dereference | |
270 | operation, return NULL. Otherwise, return the name of the | |
271 | dereferenced field, and advance *SUBEXP to point to the | |
272 | subexpression of the left-hand-side of the dereference. This is | |
273 | used when completing field names. */ | |
274 | ||
275 | char * | |
276 | extract_field_op (struct expression *exp, int *subexp) | |
277 | { | |
278 | int tem; | |
279 | char *result; | |
d7f9d729 | 280 | |
65d12d83 TT |
281 | if (exp->elts[*subexp].opcode != STRUCTOP_STRUCT |
282 | && exp->elts[*subexp].opcode != STRUCTOP_PTR) | |
283 | return NULL; | |
284 | tem = longest_to_int (exp->elts[*subexp + 1].longconst); | |
285 | result = &exp->elts[*subexp + 2].string; | |
286 | (*subexp) += 1 + 3 + BYTES_TO_EXP_ELEM (tem + 1); | |
287 | return result; | |
288 | } | |
289 | ||
c906108c SS |
290 | /* If the next expression is an OP_LABELED, skips past it, |
291 | returning the label. Otherwise, does nothing and returns NULL. */ | |
292 | ||
c5aa993b | 293 | static char * |
aa1ee363 | 294 | get_label (struct expression *exp, int *pos) |
c906108c SS |
295 | { |
296 | if (exp->elts[*pos].opcode == OP_LABELED) | |
297 | { | |
298 | int pc = (*pos)++; | |
299 | char *name = &exp->elts[pc + 2].string; | |
300 | int tem = longest_to_int (exp->elts[pc + 1].longconst); | |
d7f9d729 | 301 | |
c906108c SS |
302 | (*pos) += 3 + BYTES_TO_EXP_ELEM (tem + 1); |
303 | return name; | |
304 | } | |
305 | else | |
306 | return NULL; | |
307 | } | |
308 | ||
1b831c93 | 309 | /* This function evaluates tuples (in (the deleted) Chill) or |
db034ac5 | 310 | brace-initializers (in C/C++) for structure types. */ |
c906108c | 311 | |
61051030 AC |
312 | static struct value * |
313 | evaluate_struct_tuple (struct value *struct_val, | |
aa1ee363 AC |
314 | struct expression *exp, |
315 | int *pos, enum noside noside, int nargs) | |
c906108c | 316 | { |
df407dfe | 317 | struct type *struct_type = check_typedef (value_type (struct_val)); |
c906108c SS |
318 | struct type *substruct_type = struct_type; |
319 | struct type *field_type; | |
320 | int fieldno = -1; | |
321 | int variantno = -1; | |
322 | int subfieldno = -1; | |
d7f9d729 | 323 | |
c5aa993b | 324 | while (--nargs >= 0) |
c906108c SS |
325 | { |
326 | int pc = *pos; | |
61051030 | 327 | struct value *val = NULL; |
c906108c SS |
328 | int nlabels = 0; |
329 | int bitpos, bitsize; | |
0fd88904 | 330 | bfd_byte *addr; |
c5aa993b | 331 | |
c906108c SS |
332 | /* Skip past the labels, and count them. */ |
333 | while (get_label (exp, pos) != NULL) | |
334 | nlabels++; | |
335 | ||
336 | do | |
337 | { | |
338 | char *label = get_label (exp, &pc); | |
d7f9d729 | 339 | |
c906108c SS |
340 | if (label) |
341 | { | |
342 | for (fieldno = 0; fieldno < TYPE_NFIELDS (struct_type); | |
343 | fieldno++) | |
344 | { | |
345 | char *field_name = TYPE_FIELD_NAME (struct_type, fieldno); | |
d7f9d729 | 346 | |
edf8c5a3 | 347 | if (field_name != NULL && strcmp (field_name, label) == 0) |
c906108c SS |
348 | { |
349 | variantno = -1; | |
350 | subfieldno = fieldno; | |
351 | substruct_type = struct_type; | |
352 | goto found; | |
353 | } | |
354 | } | |
355 | for (fieldno = 0; fieldno < TYPE_NFIELDS (struct_type); | |
356 | fieldno++) | |
357 | { | |
358 | char *field_name = TYPE_FIELD_NAME (struct_type, fieldno); | |
d7f9d729 | 359 | |
c906108c SS |
360 | field_type = TYPE_FIELD_TYPE (struct_type, fieldno); |
361 | if ((field_name == 0 || *field_name == '\0') | |
362 | && TYPE_CODE (field_type) == TYPE_CODE_UNION) | |
363 | { | |
364 | variantno = 0; | |
365 | for (; variantno < TYPE_NFIELDS (field_type); | |
366 | variantno++) | |
367 | { | |
368 | substruct_type | |
369 | = TYPE_FIELD_TYPE (field_type, variantno); | |
370 | if (TYPE_CODE (substruct_type) == TYPE_CODE_STRUCT) | |
c5aa993b | 371 | { |
c906108c | 372 | for (subfieldno = 0; |
c5aa993b | 373 | subfieldno < TYPE_NFIELDS (substruct_type); |
c906108c SS |
374 | subfieldno++) |
375 | { | |
edf8c5a3 | 376 | if (strcmp(TYPE_FIELD_NAME (substruct_type, |
c906108c | 377 | subfieldno), |
edf8c5a3 | 378 | label) == 0) |
c906108c SS |
379 | { |
380 | goto found; | |
381 | } | |
382 | } | |
383 | } | |
384 | } | |
385 | } | |
386 | } | |
8a3fe4f8 | 387 | error (_("there is no field named %s"), label); |
c906108c SS |
388 | found: |
389 | ; | |
390 | } | |
391 | else | |
392 | { | |
393 | /* Unlabelled tuple element - go to next field. */ | |
394 | if (variantno >= 0) | |
395 | { | |
396 | subfieldno++; | |
397 | if (subfieldno >= TYPE_NFIELDS (substruct_type)) | |
398 | { | |
399 | variantno = -1; | |
400 | substruct_type = struct_type; | |
401 | } | |
402 | } | |
403 | if (variantno < 0) | |
404 | { | |
405 | fieldno++; | |
16963cb6 DJ |
406 | /* Skip static fields. */ |
407 | while (fieldno < TYPE_NFIELDS (struct_type) | |
d6a843b5 JK |
408 | && field_is_static (&TYPE_FIELD (struct_type, |
409 | fieldno))) | |
16963cb6 | 410 | fieldno++; |
c906108c SS |
411 | subfieldno = fieldno; |
412 | if (fieldno >= TYPE_NFIELDS (struct_type)) | |
8a3fe4f8 | 413 | error (_("too many initializers")); |
c906108c SS |
414 | field_type = TYPE_FIELD_TYPE (struct_type, fieldno); |
415 | if (TYPE_CODE (field_type) == TYPE_CODE_UNION | |
416 | && TYPE_FIELD_NAME (struct_type, fieldno)[0] == '0') | |
8a3fe4f8 | 417 | error (_("don't know which variant you want to set")); |
c906108c SS |
418 | } |
419 | } | |
420 | ||
421 | /* Here, struct_type is the type of the inner struct, | |
422 | while substruct_type is the type of the inner struct. | |
423 | These are the same for normal structures, but a variant struct | |
424 | contains anonymous union fields that contain substruct fields. | |
425 | The value fieldno is the index of the top-level (normal or | |
426 | anonymous union) field in struct_field, while the value | |
427 | subfieldno is the index of the actual real (named inner) field | |
428 | in substruct_type. */ | |
429 | ||
430 | field_type = TYPE_FIELD_TYPE (substruct_type, subfieldno); | |
431 | if (val == 0) | |
432 | val = evaluate_subexp (field_type, exp, pos, noside); | |
433 | ||
434 | /* Now actually set the field in struct_val. */ | |
435 | ||
436 | /* Assign val to field fieldno. */ | |
df407dfe | 437 | if (value_type (val) != field_type) |
c906108c SS |
438 | val = value_cast (field_type, val); |
439 | ||
440 | bitsize = TYPE_FIELD_BITSIZE (substruct_type, subfieldno); | |
441 | bitpos = TYPE_FIELD_BITPOS (struct_type, fieldno); | |
442 | if (variantno >= 0) | |
443 | bitpos += TYPE_FIELD_BITPOS (substruct_type, subfieldno); | |
0fd88904 | 444 | addr = value_contents_writeable (struct_val) + bitpos / 8; |
c906108c | 445 | if (bitsize) |
50810684 UW |
446 | modify_field (struct_type, addr, |
447 | value_as_long (val), bitpos % 8, bitsize); | |
c906108c | 448 | else |
0fd88904 | 449 | memcpy (addr, value_contents (val), |
df407dfe | 450 | TYPE_LENGTH (value_type (val))); |
c5aa993b JM |
451 | } |
452 | while (--nlabels > 0); | |
c906108c SS |
453 | } |
454 | return struct_val; | |
455 | } | |
456 | ||
db034ac5 | 457 | /* Recursive helper function for setting elements of array tuples for |
1b831c93 AC |
458 | (the deleted) Chill. The target is ARRAY (which has bounds |
459 | LOW_BOUND to HIGH_BOUND); the element value is ELEMENT; EXP, POS | |
460 | and NOSIDE are as usual. Evaluates index expresions and sets the | |
461 | specified element(s) of ARRAY to ELEMENT. Returns last index | |
462 | value. */ | |
c906108c SS |
463 | |
464 | static LONGEST | |
61051030 | 465 | init_array_element (struct value *array, struct value *element, |
aa1ee363 | 466 | struct expression *exp, int *pos, |
fba45db2 | 467 | enum noside noside, LONGEST low_bound, LONGEST high_bound) |
c906108c SS |
468 | { |
469 | LONGEST index; | |
df407dfe | 470 | int element_size = TYPE_LENGTH (value_type (element)); |
d7f9d729 | 471 | |
c906108c SS |
472 | if (exp->elts[*pos].opcode == BINOP_COMMA) |
473 | { | |
474 | (*pos)++; | |
475 | init_array_element (array, element, exp, pos, noside, | |
476 | low_bound, high_bound); | |
477 | return init_array_element (array, element, | |
478 | exp, pos, noside, low_bound, high_bound); | |
479 | } | |
480 | else if (exp->elts[*pos].opcode == BINOP_RANGE) | |
481 | { | |
482 | LONGEST low, high; | |
d7f9d729 | 483 | |
c906108c SS |
484 | (*pos)++; |
485 | low = value_as_long (evaluate_subexp (NULL_TYPE, exp, pos, noside)); | |
486 | high = value_as_long (evaluate_subexp (NULL_TYPE, exp, pos, noside)); | |
487 | if (low < low_bound || high > high_bound) | |
8a3fe4f8 | 488 | error (_("tuple range index out of range")); |
c5aa993b | 489 | for (index = low; index <= high; index++) |
c906108c | 490 | { |
990a07ab | 491 | memcpy (value_contents_raw (array) |
c906108c | 492 | + (index - low_bound) * element_size, |
0fd88904 | 493 | value_contents (element), element_size); |
c906108c SS |
494 | } |
495 | } | |
496 | else | |
497 | { | |
498 | index = value_as_long (evaluate_subexp (NULL_TYPE, exp, pos, noside)); | |
499 | if (index < low_bound || index > high_bound) | |
8a3fe4f8 | 500 | error (_("tuple index out of range")); |
990a07ab | 501 | memcpy (value_contents_raw (array) + (index - low_bound) * element_size, |
0fd88904 | 502 | value_contents (element), element_size); |
c906108c SS |
503 | } |
504 | return index; | |
505 | } | |
506 | ||
2c0b251b | 507 | static struct value * |
0b4e1325 WZ |
508 | value_f90_subarray (struct value *array, |
509 | struct expression *exp, int *pos, enum noside noside) | |
510 | { | |
511 | int pc = (*pos) + 1; | |
512 | LONGEST low_bound, high_bound; | |
513 | struct type *range = check_typedef (TYPE_INDEX_TYPE (value_type (array))); | |
514 | enum f90_range_type range_type = longest_to_int (exp->elts[pc].longconst); | |
515 | ||
516 | *pos += 3; | |
517 | ||
518 | if (range_type == LOW_BOUND_DEFAULT || range_type == BOTH_BOUND_DEFAULT) | |
519 | low_bound = TYPE_LOW_BOUND (range); | |
520 | else | |
521 | low_bound = value_as_long (evaluate_subexp (NULL_TYPE, exp, pos, noside)); | |
522 | ||
523 | if (range_type == HIGH_BOUND_DEFAULT || range_type == BOTH_BOUND_DEFAULT) | |
524 | high_bound = TYPE_HIGH_BOUND (range); | |
525 | else | |
526 | high_bound = value_as_long (evaluate_subexp (NULL_TYPE, exp, pos, noside)); | |
527 | ||
528 | return value_slice (array, low_bound, high_bound - low_bound + 1); | |
529 | } | |
530 | ||
4066e646 UW |
531 | |
532 | /* Promote value ARG1 as appropriate before performing a unary operation | |
533 | on this argument. | |
534 | If the result is not appropriate for any particular language then it | |
535 | needs to patch this function. */ | |
536 | ||
537 | void | |
538 | unop_promote (const struct language_defn *language, struct gdbarch *gdbarch, | |
539 | struct value **arg1) | |
540 | { | |
541 | struct type *type1; | |
542 | ||
543 | *arg1 = coerce_ref (*arg1); | |
544 | type1 = check_typedef (value_type (*arg1)); | |
545 | ||
546 | if (is_integral_type (type1)) | |
547 | { | |
548 | switch (language->la_language) | |
549 | { | |
550 | default: | |
551 | /* Perform integral promotion for ANSI C/C++. | |
552 | If not appropropriate for any particular language | |
553 | it needs to modify this function. */ | |
554 | { | |
555 | struct type *builtin_int = builtin_type (gdbarch)->builtin_int; | |
d7f9d729 | 556 | |
4066e646 UW |
557 | if (TYPE_LENGTH (type1) < TYPE_LENGTH (builtin_int)) |
558 | *arg1 = value_cast (builtin_int, *arg1); | |
559 | } | |
560 | break; | |
561 | } | |
562 | } | |
563 | } | |
564 | ||
565 | /* Promote values ARG1 and ARG2 as appropriate before performing a binary | |
566 | operation on those two operands. | |
567 | If the result is not appropriate for any particular language then it | |
568 | needs to patch this function. */ | |
569 | ||
570 | void | |
571 | binop_promote (const struct language_defn *language, struct gdbarch *gdbarch, | |
572 | struct value **arg1, struct value **arg2) | |
573 | { | |
574 | struct type *promoted_type = NULL; | |
575 | struct type *type1; | |
576 | struct type *type2; | |
577 | ||
578 | *arg1 = coerce_ref (*arg1); | |
579 | *arg2 = coerce_ref (*arg2); | |
580 | ||
581 | type1 = check_typedef (value_type (*arg1)); | |
582 | type2 = check_typedef (value_type (*arg2)); | |
583 | ||
584 | if ((TYPE_CODE (type1) != TYPE_CODE_FLT | |
585 | && TYPE_CODE (type1) != TYPE_CODE_DECFLOAT | |
586 | && !is_integral_type (type1)) | |
587 | || (TYPE_CODE (type2) != TYPE_CODE_FLT | |
588 | && TYPE_CODE (type2) != TYPE_CODE_DECFLOAT | |
589 | && !is_integral_type (type2))) | |
590 | return; | |
591 | ||
592 | if (TYPE_CODE (type1) == TYPE_CODE_DECFLOAT | |
593 | || TYPE_CODE (type2) == TYPE_CODE_DECFLOAT) | |
594 | { | |
595 | /* No promotion required. */ | |
596 | } | |
597 | else if (TYPE_CODE (type1) == TYPE_CODE_FLT | |
598 | || TYPE_CODE (type2) == TYPE_CODE_FLT) | |
599 | { | |
600 | switch (language->la_language) | |
601 | { | |
602 | case language_c: | |
603 | case language_cplus: | |
604 | case language_asm: | |
605 | case language_objc: | |
606 | /* No promotion required. */ | |
607 | break; | |
608 | ||
609 | default: | |
610 | /* For other languages the result type is unchanged from gdb | |
611 | version 6.7 for backward compatibility. | |
612 | If either arg was long double, make sure that value is also long | |
613 | double. Otherwise use double. */ | |
614 | if (TYPE_LENGTH (type1) * 8 > gdbarch_double_bit (gdbarch) | |
615 | || TYPE_LENGTH (type2) * 8 > gdbarch_double_bit (gdbarch)) | |
616 | promoted_type = builtin_type (gdbarch)->builtin_long_double; | |
617 | else | |
618 | promoted_type = builtin_type (gdbarch)->builtin_double; | |
619 | break; | |
620 | } | |
621 | } | |
622 | else if (TYPE_CODE (type1) == TYPE_CODE_BOOL | |
623 | && TYPE_CODE (type2) == TYPE_CODE_BOOL) | |
624 | { | |
625 | /* No promotion required. */ | |
626 | } | |
627 | else | |
628 | /* Integral operations here. */ | |
629 | /* FIXME: Also mixed integral/booleans, with result an integer. */ | |
630 | { | |
631 | const struct builtin_type *builtin = builtin_type (gdbarch); | |
632 | unsigned int promoted_len1 = TYPE_LENGTH (type1); | |
633 | unsigned int promoted_len2 = TYPE_LENGTH (type2); | |
634 | int is_unsigned1 = TYPE_UNSIGNED (type1); | |
635 | int is_unsigned2 = TYPE_UNSIGNED (type2); | |
636 | unsigned int result_len; | |
637 | int unsigned_operation; | |
638 | ||
639 | /* Determine type length and signedness after promotion for | |
640 | both operands. */ | |
641 | if (promoted_len1 < TYPE_LENGTH (builtin->builtin_int)) | |
642 | { | |
643 | is_unsigned1 = 0; | |
644 | promoted_len1 = TYPE_LENGTH (builtin->builtin_int); | |
645 | } | |
646 | if (promoted_len2 < TYPE_LENGTH (builtin->builtin_int)) | |
647 | { | |
648 | is_unsigned2 = 0; | |
649 | promoted_len2 = TYPE_LENGTH (builtin->builtin_int); | |
650 | } | |
651 | ||
652 | if (promoted_len1 > promoted_len2) | |
653 | { | |
654 | unsigned_operation = is_unsigned1; | |
655 | result_len = promoted_len1; | |
656 | } | |
657 | else if (promoted_len2 > promoted_len1) | |
658 | { | |
659 | unsigned_operation = is_unsigned2; | |
660 | result_len = promoted_len2; | |
661 | } | |
662 | else | |
663 | { | |
664 | unsigned_operation = is_unsigned1 || is_unsigned2; | |
665 | result_len = promoted_len1; | |
666 | } | |
667 | ||
668 | switch (language->la_language) | |
669 | { | |
670 | case language_c: | |
671 | case language_cplus: | |
672 | case language_asm: | |
673 | case language_objc: | |
674 | if (result_len <= TYPE_LENGTH (builtin->builtin_int)) | |
675 | { | |
676 | promoted_type = (unsigned_operation | |
677 | ? builtin->builtin_unsigned_int | |
678 | : builtin->builtin_int); | |
679 | } | |
680 | else if (result_len <= TYPE_LENGTH (builtin->builtin_long)) | |
681 | { | |
682 | promoted_type = (unsigned_operation | |
683 | ? builtin->builtin_unsigned_long | |
684 | : builtin->builtin_long); | |
685 | } | |
686 | else | |
687 | { | |
688 | promoted_type = (unsigned_operation | |
689 | ? builtin->builtin_unsigned_long_long | |
690 | : builtin->builtin_long_long); | |
691 | } | |
692 | break; | |
693 | ||
694 | default: | |
695 | /* For other languages the result type is unchanged from gdb | |
696 | version 6.7 for backward compatibility. | |
697 | If either arg was long long, make sure that value is also long | |
698 | long. Otherwise use long. */ | |
699 | if (unsigned_operation) | |
700 | { | |
701 | if (result_len > gdbarch_long_bit (gdbarch) / HOST_CHAR_BIT) | |
702 | promoted_type = builtin->builtin_unsigned_long_long; | |
703 | else | |
704 | promoted_type = builtin->builtin_unsigned_long; | |
705 | } | |
706 | else | |
707 | { | |
708 | if (result_len > gdbarch_long_bit (gdbarch) / HOST_CHAR_BIT) | |
709 | promoted_type = builtin->builtin_long_long; | |
710 | else | |
711 | promoted_type = builtin->builtin_long; | |
712 | } | |
713 | break; | |
714 | } | |
715 | } | |
716 | ||
717 | if (promoted_type) | |
718 | { | |
719 | /* Promote both operands to common type. */ | |
720 | *arg1 = value_cast (promoted_type, *arg1); | |
721 | *arg2 = value_cast (promoted_type, *arg2); | |
722 | } | |
723 | } | |
724 | ||
89eef114 | 725 | static int |
cc73bb8c | 726 | ptrmath_type_p (const struct language_defn *lang, struct type *type) |
89eef114 UW |
727 | { |
728 | type = check_typedef (type); | |
729 | if (TYPE_CODE (type) == TYPE_CODE_REF) | |
730 | type = TYPE_TARGET_TYPE (type); | |
731 | ||
732 | switch (TYPE_CODE (type)) | |
733 | { | |
734 | case TYPE_CODE_PTR: | |
735 | case TYPE_CODE_FUNC: | |
736 | return 1; | |
737 | ||
738 | case TYPE_CODE_ARRAY: | |
7346b668 | 739 | return TYPE_VECTOR (type) ? 0 : lang->c_style_arrays; |
89eef114 UW |
740 | |
741 | default: | |
742 | return 0; | |
743 | } | |
744 | } | |
745 | ||
072bba3b KS |
746 | /* Constructs a fake method with the given parameter types. |
747 | This function is used by the parser to construct an "expected" | |
748 | type for method overload resolution. */ | |
749 | ||
750 | static struct type * | |
751 | make_params (int num_types, struct type **param_types) | |
752 | { | |
753 | struct type *type = XZALLOC (struct type); | |
754 | TYPE_MAIN_TYPE (type) = XZALLOC (struct main_type); | |
755 | TYPE_LENGTH (type) = 1; | |
756 | TYPE_CODE (type) = TYPE_CODE_METHOD; | |
757 | TYPE_VPTR_FIELDNO (type) = -1; | |
758 | TYPE_CHAIN (type) = type; | |
759 | TYPE_NFIELDS (type) = num_types; | |
760 | TYPE_FIELDS (type) = (struct field *) | |
761 | TYPE_ZALLOC (type, sizeof (struct field) * num_types); | |
762 | ||
763 | while (num_types-- > 0) | |
764 | TYPE_FIELD_TYPE (type, num_types) = param_types[num_types]; | |
765 | ||
766 | return type; | |
767 | } | |
768 | ||
61051030 | 769 | struct value * |
fba45db2 | 770 | evaluate_subexp_standard (struct type *expect_type, |
aa1ee363 | 771 | struct expression *exp, int *pos, |
fba45db2 | 772 | enum noside noside) |
c906108c SS |
773 | { |
774 | enum exp_opcode op; | |
775 | int tem, tem2, tem3; | |
52f0bd74 | 776 | int pc, pc2 = 0, oldpos; |
61051030 AC |
777 | struct value *arg1 = NULL; |
778 | struct value *arg2 = NULL; | |
779 | struct value *arg3; | |
c906108c SS |
780 | struct type *type; |
781 | int nargs; | |
61051030 | 782 | struct value **argvec; |
8f78b329 | 783 | int upper, lower; |
c906108c SS |
784 | int code; |
785 | int ix; | |
786 | long mem_offset; | |
c5aa993b | 787 | struct type **arg_types; |
c906108c | 788 | int save_pos1; |
714f19d5 TT |
789 | struct symbol *function = NULL; |
790 | char *function_name = NULL; | |
c906108c | 791 | |
c906108c SS |
792 | pc = (*pos)++; |
793 | op = exp->elts[pc].opcode; | |
794 | ||
795 | switch (op) | |
796 | { | |
797 | case OP_SCOPE: | |
798 | tem = longest_to_int (exp->elts[pc + 2].longconst); | |
799 | (*pos) += 4 + BYTES_TO_EXP_ELEM (tem + 1); | |
0d5de010 DJ |
800 | if (noside == EVAL_SKIP) |
801 | goto nosideret; | |
79c2c32d DC |
802 | arg1 = value_aggregate_elt (exp->elts[pc + 1].type, |
803 | &exp->elts[pc + 3].string, | |
072bba3b | 804 | expect_type, 0, noside); |
c906108c | 805 | if (arg1 == NULL) |
8a3fe4f8 | 806 | error (_("There is no field named %s"), &exp->elts[pc + 3].string); |
c906108c SS |
807 | return arg1; |
808 | ||
809 | case OP_LONG: | |
810 | (*pos) += 3; | |
811 | return value_from_longest (exp->elts[pc + 1].type, | |
812 | exp->elts[pc + 2].longconst); | |
813 | ||
814 | case OP_DOUBLE: | |
815 | (*pos) += 3; | |
816 | return value_from_double (exp->elts[pc + 1].type, | |
817 | exp->elts[pc + 2].doubleconst); | |
818 | ||
27bc4d80 TJB |
819 | case OP_DECFLOAT: |
820 | (*pos) += 3; | |
4ef30785 TJB |
821 | return value_from_decfloat (exp->elts[pc + 1].type, |
822 | exp->elts[pc + 2].decfloatconst); | |
27bc4d80 | 823 | |
7322dca9 | 824 | case OP_ADL_FUNC: |
c906108c SS |
825 | case OP_VAR_VALUE: |
826 | (*pos) += 3; | |
827 | if (noside == EVAL_SKIP) | |
828 | goto nosideret; | |
c906108c | 829 | |
070ad9f0 DB |
830 | /* JYG: We used to just return value_zero of the symbol type |
831 | if we're asked to avoid side effects. Otherwise we return | |
832 | value_of_variable (...). However I'm not sure if | |
833 | value_of_variable () has any side effect. | |
834 | We need a full value object returned here for whatis_exp () | |
835 | to call evaluate_type () and then pass the full value to | |
836 | value_rtti_target_type () if we are dealing with a pointer | |
837 | or reference to a base class and print object is on. */ | |
c906108c | 838 | |
5e572bb4 DJ |
839 | { |
840 | volatile struct gdb_exception except; | |
841 | struct value *ret = NULL; | |
842 | ||
843 | TRY_CATCH (except, RETURN_MASK_ERROR) | |
844 | { | |
845 | ret = value_of_variable (exp->elts[pc + 2].symbol, | |
846 | exp->elts[pc + 1].block); | |
847 | } | |
848 | ||
849 | if (except.reason < 0) | |
850 | { | |
851 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
852 | ret = value_zero (SYMBOL_TYPE (exp->elts[pc + 2].symbol), not_lval); | |
853 | else | |
854 | throw_exception (except); | |
855 | } | |
856 | ||
857 | return ret; | |
858 | } | |
c906108c SS |
859 | |
860 | case OP_LAST: | |
861 | (*pos) += 2; | |
862 | return | |
863 | access_value_history (longest_to_int (exp->elts[pc + 1].longconst)); | |
864 | ||
865 | case OP_REGISTER: | |
866 | { | |
67f3407f DJ |
867 | const char *name = &exp->elts[pc + 2].string; |
868 | int regno; | |
123dc839 | 869 | struct value *val; |
67f3407f DJ |
870 | |
871 | (*pos) += 3 + BYTES_TO_EXP_ELEM (exp->elts[pc + 1].longconst + 1); | |
d80b854b | 872 | regno = user_reg_map_name_to_regnum (exp->gdbarch, |
029a67e4 | 873 | name, strlen (name)); |
67f3407f DJ |
874 | if (regno == -1) |
875 | error (_("Register $%s not available."), name); | |
80f064a2 JB |
876 | |
877 | /* In EVAL_AVOID_SIDE_EFFECTS mode, we only need to return | |
878 | a value with the appropriate register type. Unfortunately, | |
879 | we don't have easy access to the type of user registers. | |
880 | So for these registers, we fetch the register value regardless | |
881 | of the evaluation mode. */ | |
882 | if (noside == EVAL_AVOID_SIDE_EFFECTS | |
d80b854b UW |
883 | && regno < gdbarch_num_regs (exp->gdbarch) |
884 | + gdbarch_num_pseudo_regs (exp->gdbarch)) | |
885 | val = value_zero (register_type (exp->gdbarch, regno), not_lval); | |
123dc839 DJ |
886 | else |
887 | val = value_of_register (regno, get_selected_frame (NULL)); | |
c906108c | 888 | if (val == NULL) |
67f3407f | 889 | error (_("Value of register %s not available."), name); |
c906108c SS |
890 | else |
891 | return val; | |
892 | } | |
893 | case OP_BOOL: | |
894 | (*pos) += 2; | |
fbb06eb1 UW |
895 | type = language_bool_type (exp->language_defn, exp->gdbarch); |
896 | return value_from_longest (type, exp->elts[pc + 1].longconst); | |
c906108c SS |
897 | |
898 | case OP_INTERNALVAR: | |
899 | (*pos) += 2; | |
78267919 UW |
900 | return value_of_internalvar (exp->gdbarch, |
901 | exp->elts[pc + 1].internalvar); | |
c906108c SS |
902 | |
903 | case OP_STRING: | |
904 | tem = longest_to_int (exp->elts[pc + 1].longconst); | |
905 | (*pos) += 3 + BYTES_TO_EXP_ELEM (tem + 1); | |
906 | if (noside == EVAL_SKIP) | |
907 | goto nosideret; | |
3b7538c0 UW |
908 | type = language_string_char_type (exp->language_defn, exp->gdbarch); |
909 | return value_string (&exp->elts[pc + 2].string, tem, type); | |
c906108c | 910 | |
a9fa03de AF |
911 | case OP_OBJC_NSSTRING: /* Objective C Foundation Class NSString constant. */ |
912 | tem = longest_to_int (exp->elts[pc + 1].longconst); | |
913 | (*pos) += 3 + BYTES_TO_EXP_ELEM (tem + 1); | |
914 | if (noside == EVAL_SKIP) | |
915 | { | |
916 | goto nosideret; | |
917 | } | |
3b7538c0 | 918 | return value_nsstring (exp->gdbarch, &exp->elts[pc + 2].string, tem + 1); |
a9fa03de | 919 | |
c906108c SS |
920 | case OP_BITSTRING: |
921 | tem = longest_to_int (exp->elts[pc + 1].longconst); | |
922 | (*pos) | |
923 | += 3 + BYTES_TO_EXP_ELEM ((tem + HOST_CHAR_BIT - 1) / HOST_CHAR_BIT); | |
924 | if (noside == EVAL_SKIP) | |
925 | goto nosideret; | |
22601c15 UW |
926 | return value_bitstring (&exp->elts[pc + 2].string, tem, |
927 | builtin_type (exp->gdbarch)->builtin_int); | |
c906108c SS |
928 | break; |
929 | ||
930 | case OP_ARRAY: | |
931 | (*pos) += 3; | |
932 | tem2 = longest_to_int (exp->elts[pc + 1].longconst); | |
933 | tem3 = longest_to_int (exp->elts[pc + 2].longconst); | |
934 | nargs = tem3 - tem2 + 1; | |
935 | type = expect_type ? check_typedef (expect_type) : NULL_TYPE; | |
936 | ||
937 | if (expect_type != NULL_TYPE && noside != EVAL_SKIP | |
938 | && TYPE_CODE (type) == TYPE_CODE_STRUCT) | |
939 | { | |
61051030 | 940 | struct value *rec = allocate_value (expect_type); |
d7f9d729 | 941 | |
990a07ab | 942 | memset (value_contents_raw (rec), '\0', TYPE_LENGTH (type)); |
c906108c SS |
943 | return evaluate_struct_tuple (rec, exp, pos, noside, nargs); |
944 | } | |
945 | ||
946 | if (expect_type != NULL_TYPE && noside != EVAL_SKIP | |
947 | && TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
948 | { | |
262452ec | 949 | struct type *range_type = TYPE_INDEX_TYPE (type); |
c906108c | 950 | struct type *element_type = TYPE_TARGET_TYPE (type); |
61051030 | 951 | struct value *array = allocate_value (expect_type); |
c906108c SS |
952 | int element_size = TYPE_LENGTH (check_typedef (element_type)); |
953 | LONGEST low_bound, high_bound, index; | |
d7f9d729 | 954 | |
c906108c SS |
955 | if (get_discrete_bounds (range_type, &low_bound, &high_bound) < 0) |
956 | { | |
957 | low_bound = 0; | |
958 | high_bound = (TYPE_LENGTH (type) / element_size) - 1; | |
959 | } | |
960 | index = low_bound; | |
990a07ab | 961 | memset (value_contents_raw (array), 0, TYPE_LENGTH (expect_type)); |
c5aa993b | 962 | for (tem = nargs; --nargs >= 0;) |
c906108c | 963 | { |
61051030 | 964 | struct value *element; |
c906108c | 965 | int index_pc = 0; |
d7f9d729 | 966 | |
c906108c SS |
967 | if (exp->elts[*pos].opcode == BINOP_RANGE) |
968 | { | |
969 | index_pc = ++(*pos); | |
970 | evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP); | |
971 | } | |
972 | element = evaluate_subexp (element_type, exp, pos, noside); | |
df407dfe | 973 | if (value_type (element) != element_type) |
c906108c SS |
974 | element = value_cast (element_type, element); |
975 | if (index_pc) | |
976 | { | |
977 | int continue_pc = *pos; | |
d7f9d729 | 978 | |
c906108c SS |
979 | *pos = index_pc; |
980 | index = init_array_element (array, element, exp, pos, noside, | |
981 | low_bound, high_bound); | |
982 | *pos = continue_pc; | |
983 | } | |
984 | else | |
985 | { | |
986 | if (index > high_bound) | |
987 | /* to avoid memory corruption */ | |
8a3fe4f8 | 988 | error (_("Too many array elements")); |
990a07ab | 989 | memcpy (value_contents_raw (array) |
c906108c | 990 | + (index - low_bound) * element_size, |
0fd88904 | 991 | value_contents (element), |
c906108c SS |
992 | element_size); |
993 | } | |
994 | index++; | |
995 | } | |
996 | return array; | |
997 | } | |
998 | ||
999 | if (expect_type != NULL_TYPE && noside != EVAL_SKIP | |
1000 | && TYPE_CODE (type) == TYPE_CODE_SET) | |
1001 | { | |
61051030 | 1002 | struct value *set = allocate_value (expect_type); |
47b667de | 1003 | gdb_byte *valaddr = value_contents_raw (set); |
c906108c SS |
1004 | struct type *element_type = TYPE_INDEX_TYPE (type); |
1005 | struct type *check_type = element_type; | |
1006 | LONGEST low_bound, high_bound; | |
1007 | ||
1008 | /* get targettype of elementtype */ | |
905e0470 PM |
1009 | while (TYPE_CODE (check_type) == TYPE_CODE_RANGE |
1010 | || TYPE_CODE (check_type) == TYPE_CODE_TYPEDEF) | |
c906108c SS |
1011 | check_type = TYPE_TARGET_TYPE (check_type); |
1012 | ||
1013 | if (get_discrete_bounds (element_type, &low_bound, &high_bound) < 0) | |
8a3fe4f8 | 1014 | error (_("(power)set type with unknown size")); |
c906108c SS |
1015 | memset (valaddr, '\0', TYPE_LENGTH (type)); |
1016 | for (tem = 0; tem < nargs; tem++) | |
1017 | { | |
1018 | LONGEST range_low, range_high; | |
1019 | struct type *range_low_type, *range_high_type; | |
61051030 | 1020 | struct value *elem_val; |
d7f9d729 | 1021 | |
c906108c SS |
1022 | if (exp->elts[*pos].opcode == BINOP_RANGE) |
1023 | { | |
1024 | (*pos)++; | |
1025 | elem_val = evaluate_subexp (element_type, exp, pos, noside); | |
df407dfe | 1026 | range_low_type = value_type (elem_val); |
c906108c SS |
1027 | range_low = value_as_long (elem_val); |
1028 | elem_val = evaluate_subexp (element_type, exp, pos, noside); | |
df407dfe | 1029 | range_high_type = value_type (elem_val); |
c906108c SS |
1030 | range_high = value_as_long (elem_val); |
1031 | } | |
1032 | else | |
1033 | { | |
1034 | elem_val = evaluate_subexp (element_type, exp, pos, noside); | |
df407dfe | 1035 | range_low_type = range_high_type = value_type (elem_val); |
c906108c SS |
1036 | range_low = range_high = value_as_long (elem_val); |
1037 | } | |
1038 | /* check types of elements to avoid mixture of elements from | |
c5aa993b JM |
1039 | different types. Also check if type of element is "compatible" |
1040 | with element type of powerset */ | |
c906108c SS |
1041 | if (TYPE_CODE (range_low_type) == TYPE_CODE_RANGE) |
1042 | range_low_type = TYPE_TARGET_TYPE (range_low_type); | |
1043 | if (TYPE_CODE (range_high_type) == TYPE_CODE_RANGE) | |
1044 | range_high_type = TYPE_TARGET_TYPE (range_high_type); | |
905e0470 PM |
1045 | if ((TYPE_CODE (range_low_type) != TYPE_CODE (range_high_type)) |
1046 | || (TYPE_CODE (range_low_type) == TYPE_CODE_ENUM | |
1047 | && (range_low_type != range_high_type))) | |
c906108c | 1048 | /* different element modes */ |
8a3fe4f8 | 1049 | error (_("POWERSET tuple elements of different mode")); |
905e0470 PM |
1050 | if ((TYPE_CODE (check_type) != TYPE_CODE (range_low_type)) |
1051 | || (TYPE_CODE (check_type) == TYPE_CODE_ENUM | |
1052 | && range_low_type != check_type)) | |
8a3fe4f8 | 1053 | error (_("incompatible POWERSET tuple elements")); |
c906108c SS |
1054 | if (range_low > range_high) |
1055 | { | |
8a3fe4f8 | 1056 | warning (_("empty POWERSET tuple range")); |
c906108c SS |
1057 | continue; |
1058 | } | |
1059 | if (range_low < low_bound || range_high > high_bound) | |
8a3fe4f8 | 1060 | error (_("POWERSET tuple element out of range")); |
c906108c SS |
1061 | range_low -= low_bound; |
1062 | range_high -= low_bound; | |
c5aa993b | 1063 | for (; range_low <= range_high; range_low++) |
c906108c SS |
1064 | { |
1065 | int bit_index = (unsigned) range_low % TARGET_CHAR_BIT; | |
d7f9d729 | 1066 | |
34e13b5b | 1067 | if (gdbarch_bits_big_endian (exp->gdbarch)) |
c906108c | 1068 | bit_index = TARGET_CHAR_BIT - 1 - bit_index; |
c5aa993b | 1069 | valaddr[(unsigned) range_low / TARGET_CHAR_BIT] |
c906108c SS |
1070 | |= 1 << bit_index; |
1071 | } | |
1072 | } | |
1073 | return set; | |
1074 | } | |
1075 | ||
f976f6d4 | 1076 | argvec = (struct value **) alloca (sizeof (struct value *) * nargs); |
c906108c SS |
1077 | for (tem = 0; tem < nargs; tem++) |
1078 | { | |
1079 | /* Ensure that array expressions are coerced into pointer objects. */ | |
1080 | argvec[tem] = evaluate_subexp_with_coercion (exp, pos, noside); | |
1081 | } | |
1082 | if (noside == EVAL_SKIP) | |
1083 | goto nosideret; | |
1084 | return value_array (tem2, tem3, argvec); | |
1085 | ||
1086 | case TERNOP_SLICE: | |
1087 | { | |
61051030 | 1088 | struct value *array = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
c906108c | 1089 | int lowbound |
d7f9d729 | 1090 | = value_as_long (evaluate_subexp (NULL_TYPE, exp, pos, noside)); |
c906108c | 1091 | int upper |
d7f9d729 MS |
1092 | = value_as_long (evaluate_subexp (NULL_TYPE, exp, pos, noside)); |
1093 | ||
c906108c SS |
1094 | if (noside == EVAL_SKIP) |
1095 | goto nosideret; | |
1096 | return value_slice (array, lowbound, upper - lowbound + 1); | |
1097 | } | |
1098 | ||
1099 | case TERNOP_SLICE_COUNT: | |
1100 | { | |
61051030 | 1101 | struct value *array = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
c906108c | 1102 | int lowbound |
d7f9d729 | 1103 | = value_as_long (evaluate_subexp (NULL_TYPE, exp, pos, noside)); |
c906108c | 1104 | int length |
d7f9d729 MS |
1105 | = value_as_long (evaluate_subexp (NULL_TYPE, exp, pos, noside)); |
1106 | ||
c906108c SS |
1107 | return value_slice (array, lowbound, length); |
1108 | } | |
1109 | ||
1110 | case TERNOP_COND: | |
1111 | /* Skip third and second args to evaluate the first one. */ | |
1112 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
1113 | if (value_logical_not (arg1)) | |
1114 | { | |
1115 | evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP); | |
1116 | return evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
1117 | } | |
1118 | else | |
1119 | { | |
1120 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
1121 | evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP); | |
1122 | return arg2; | |
1123 | } | |
1124 | ||
a9fa03de AF |
1125 | case OP_OBJC_SELECTOR: |
1126 | { /* Objective C @selector operator. */ | |
1127 | char *sel = &exp->elts[pc + 2].string; | |
1128 | int len = longest_to_int (exp->elts[pc + 1].longconst); | |
d4dbb9c7 | 1129 | struct type *selector_type; |
a9fa03de AF |
1130 | |
1131 | (*pos) += 3 + BYTES_TO_EXP_ELEM (len + 1); | |
1132 | if (noside == EVAL_SKIP) | |
1133 | goto nosideret; | |
1134 | ||
1135 | if (sel[len] != 0) | |
1136 | sel[len] = 0; /* Make sure it's terminated. */ | |
d4dbb9c7 UW |
1137 | |
1138 | selector_type = builtin_type (exp->gdbarch)->builtin_data_ptr; | |
3b7538c0 UW |
1139 | return value_from_longest (selector_type, |
1140 | lookup_child_selector (exp->gdbarch, sel)); | |
a9fa03de AF |
1141 | } |
1142 | ||
1143 | case OP_OBJC_MSGCALL: | |
1144 | { /* Objective C message (method) call. */ | |
1145 | ||
17dd65ce TT |
1146 | CORE_ADDR responds_selector = 0; |
1147 | CORE_ADDR method_selector = 0; | |
a9fa03de | 1148 | |
c253954e | 1149 | CORE_ADDR selector = 0; |
a9fa03de | 1150 | |
a9fa03de AF |
1151 | int struct_return = 0; |
1152 | int sub_no_side = 0; | |
1153 | ||
17dd65ce TT |
1154 | struct value *msg_send = NULL; |
1155 | struct value *msg_send_stret = NULL; | |
1156 | int gnu_runtime = 0; | |
a9fa03de AF |
1157 | |
1158 | struct value *target = NULL; | |
1159 | struct value *method = NULL; | |
1160 | struct value *called_method = NULL; | |
1161 | ||
1162 | struct type *selector_type = NULL; | |
d4dbb9c7 | 1163 | struct type *long_type; |
a9fa03de AF |
1164 | |
1165 | struct value *ret = NULL; | |
1166 | CORE_ADDR addr = 0; | |
1167 | ||
1168 | selector = exp->elts[pc + 1].longconst; | |
1169 | nargs = exp->elts[pc + 2].longconst; | |
1170 | argvec = (struct value **) alloca (sizeof (struct value *) | |
1171 | * (nargs + 5)); | |
1172 | ||
1173 | (*pos) += 3; | |
1174 | ||
d4dbb9c7 UW |
1175 | long_type = builtin_type (exp->gdbarch)->builtin_long; |
1176 | selector_type = builtin_type (exp->gdbarch)->builtin_data_ptr; | |
1177 | ||
a9fa03de AF |
1178 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
1179 | sub_no_side = EVAL_NORMAL; | |
1180 | else | |
1181 | sub_no_side = noside; | |
1182 | ||
1183 | target = evaluate_subexp (selector_type, exp, pos, sub_no_side); | |
1184 | ||
1185 | if (value_as_long (target) == 0) | |
d4dbb9c7 | 1186 | return value_from_longest (long_type, 0); |
a9fa03de AF |
1187 | |
1188 | if (lookup_minimal_symbol ("objc_msg_lookup", 0, 0)) | |
1189 | gnu_runtime = 1; | |
1190 | ||
1191 | /* Find the method dispatch (Apple runtime) or method lookup | |
1192 | (GNU runtime) function for Objective-C. These will be used | |
1193 | to lookup the symbol information for the method. If we | |
1194 | can't find any symbol information, then we'll use these to | |
1195 | call the method, otherwise we can call the method | |
1196 | directly. The msg_send_stret function is used in the special | |
1197 | case of a method that returns a structure (Apple runtime | |
1198 | only). */ | |
1199 | if (gnu_runtime) | |
1200 | { | |
d4dbb9c7 | 1201 | struct type *type = selector_type; |
d7f9d729 | 1202 | |
c253954e JB |
1203 | type = lookup_function_type (type); |
1204 | type = lookup_pointer_type (type); | |
1205 | type = lookup_function_type (type); | |
1206 | type = lookup_pointer_type (type); | |
1207 | ||
3e3b026f UW |
1208 | msg_send = find_function_in_inferior ("objc_msg_lookup", NULL); |
1209 | msg_send_stret | |
1210 | = find_function_in_inferior ("objc_msg_lookup", NULL); | |
c253954e JB |
1211 | |
1212 | msg_send = value_from_pointer (type, value_as_address (msg_send)); | |
1213 | msg_send_stret = value_from_pointer (type, | |
1214 | value_as_address (msg_send_stret)); | |
a9fa03de AF |
1215 | } |
1216 | else | |
1217 | { | |
3e3b026f | 1218 | msg_send = find_function_in_inferior ("objc_msgSend", NULL); |
a9fa03de | 1219 | /* Special dispatcher for methods returning structs */ |
3e3b026f UW |
1220 | msg_send_stret |
1221 | = find_function_in_inferior ("objc_msgSend_stret", NULL); | |
a9fa03de AF |
1222 | } |
1223 | ||
1224 | /* Verify the target object responds to this method. The | |
1225 | standard top-level 'Object' class uses a different name for | |
1226 | the verification method than the non-standard, but more | |
1227 | often used, 'NSObject' class. Make sure we check for both. */ | |
1228 | ||
3b7538c0 UW |
1229 | responds_selector |
1230 | = lookup_child_selector (exp->gdbarch, "respondsToSelector:"); | |
a9fa03de | 1231 | if (responds_selector == 0) |
3b7538c0 UW |
1232 | responds_selector |
1233 | = lookup_child_selector (exp->gdbarch, "respondsTo:"); | |
a9fa03de AF |
1234 | |
1235 | if (responds_selector == 0) | |
8a3fe4f8 | 1236 | error (_("no 'respondsTo:' or 'respondsToSelector:' method")); |
a9fa03de | 1237 | |
3b7538c0 UW |
1238 | method_selector |
1239 | = lookup_child_selector (exp->gdbarch, "methodForSelector:"); | |
a9fa03de | 1240 | if (method_selector == 0) |
3b7538c0 UW |
1241 | method_selector |
1242 | = lookup_child_selector (exp->gdbarch, "methodFor:"); | |
a9fa03de AF |
1243 | |
1244 | if (method_selector == 0) | |
8a3fe4f8 | 1245 | error (_("no 'methodFor:' or 'methodForSelector:' method")); |
a9fa03de AF |
1246 | |
1247 | /* Call the verification method, to make sure that the target | |
1248 | class implements the desired method. */ | |
1249 | ||
1250 | argvec[0] = msg_send; | |
1251 | argvec[1] = target; | |
d4dbb9c7 UW |
1252 | argvec[2] = value_from_longest (long_type, responds_selector); |
1253 | argvec[3] = value_from_longest (long_type, selector); | |
a9fa03de AF |
1254 | argvec[4] = 0; |
1255 | ||
1256 | ret = call_function_by_hand (argvec[0], 3, argvec + 1); | |
1257 | if (gnu_runtime) | |
1258 | { | |
1259 | /* Function objc_msg_lookup returns a pointer. */ | |
1260 | argvec[0] = ret; | |
1261 | ret = call_function_by_hand (argvec[0], 3, argvec + 1); | |
1262 | } | |
1263 | if (value_as_long (ret) == 0) | |
8a3fe4f8 | 1264 | error (_("Target does not respond to this message selector.")); |
a9fa03de AF |
1265 | |
1266 | /* Call "methodForSelector:" method, to get the address of a | |
1267 | function method that implements this selector for this | |
1268 | class. If we can find a symbol at that address, then we | |
1269 | know the return type, parameter types etc. (that's a good | |
1270 | thing). */ | |
1271 | ||
1272 | argvec[0] = msg_send; | |
1273 | argvec[1] = target; | |
d4dbb9c7 UW |
1274 | argvec[2] = value_from_longest (long_type, method_selector); |
1275 | argvec[3] = value_from_longest (long_type, selector); | |
a9fa03de AF |
1276 | argvec[4] = 0; |
1277 | ||
1278 | ret = call_function_by_hand (argvec[0], 3, argvec + 1); | |
1279 | if (gnu_runtime) | |
1280 | { | |
1281 | argvec[0] = ret; | |
1282 | ret = call_function_by_hand (argvec[0], 3, argvec + 1); | |
1283 | } | |
1284 | ||
1285 | /* ret should now be the selector. */ | |
1286 | ||
1287 | addr = value_as_long (ret); | |
1288 | if (addr) | |
1289 | { | |
1290 | struct symbol *sym = NULL; | |
a9fa03de | 1291 | |
69368a60 UW |
1292 | /* The address might point to a function descriptor; |
1293 | resolve it to the actual code address instead. */ | |
1294 | addr = gdbarch_convert_from_func_ptr_addr (exp->gdbarch, addr, | |
1295 | ¤t_target); | |
1296 | ||
1297 | /* Is it a high_level symbol? */ | |
a9fa03de AF |
1298 | sym = find_pc_function (addr); |
1299 | if (sym != NULL) | |
1300 | method = value_of_variable (sym, 0); | |
1301 | } | |
1302 | ||
1303 | /* If we found a method with symbol information, check to see | |
1304 | if it returns a struct. Otherwise assume it doesn't. */ | |
1305 | ||
1306 | if (method) | |
1307 | { | |
1308 | struct block *b; | |
1309 | CORE_ADDR funaddr; | |
c055b101 | 1310 | struct type *val_type; |
a9fa03de | 1311 | |
c055b101 | 1312 | funaddr = find_function_addr (method, &val_type); |
a9fa03de AF |
1313 | |
1314 | b = block_for_pc (funaddr); | |
1315 | ||
c055b101 | 1316 | CHECK_TYPEDEF (val_type); |
a9fa03de | 1317 | |
c055b101 CV |
1318 | if ((val_type == NULL) |
1319 | || (TYPE_CODE(val_type) == TYPE_CODE_ERROR)) | |
a9fa03de AF |
1320 | { |
1321 | if (expect_type != NULL) | |
c055b101 | 1322 | val_type = expect_type; |
a9fa03de AF |
1323 | } |
1324 | ||
d80b854b UW |
1325 | struct_return = using_struct_return (exp->gdbarch, |
1326 | value_type (method), val_type); | |
a9fa03de AF |
1327 | } |
1328 | else if (expect_type != NULL) | |
1329 | { | |
d80b854b | 1330 | struct_return = using_struct_return (exp->gdbarch, NULL, |
c055b101 | 1331 | check_typedef (expect_type)); |
a9fa03de AF |
1332 | } |
1333 | ||
1334 | /* Found a function symbol. Now we will substitute its | |
1335 | value in place of the message dispatcher (obj_msgSend), | |
1336 | so that we call the method directly instead of thru | |
1337 | the dispatcher. The main reason for doing this is that | |
1338 | we can now evaluate the return value and parameter values | |
1339 | according to their known data types, in case we need to | |
1340 | do things like promotion, dereferencing, special handling | |
1341 | of structs and doubles, etc. | |
1342 | ||
1343 | We want to use the type signature of 'method', but still | |
1344 | jump to objc_msgSend() or objc_msgSend_stret() to better | |
1345 | mimic the behavior of the runtime. */ | |
1346 | ||
1347 | if (method) | |
1348 | { | |
df407dfe | 1349 | if (TYPE_CODE (value_type (method)) != TYPE_CODE_FUNC) |
8a3fe4f8 | 1350 | error (_("method address has symbol information with non-function type; skipping")); |
69368a60 UW |
1351 | |
1352 | /* Create a function pointer of the appropriate type, and replace | |
1353 | its value with the value of msg_send or msg_send_stret. We must | |
1354 | use a pointer here, as msg_send and msg_send_stret are of pointer | |
1355 | type, and the representation may be different on systems that use | |
1356 | function descriptors. */ | |
a9fa03de | 1357 | if (struct_return) |
69368a60 UW |
1358 | called_method |
1359 | = value_from_pointer (lookup_pointer_type (value_type (method)), | |
1360 | value_as_address (msg_send_stret)); | |
a9fa03de | 1361 | else |
69368a60 UW |
1362 | called_method |
1363 | = value_from_pointer (lookup_pointer_type (value_type (method)), | |
1364 | value_as_address (msg_send)); | |
a9fa03de AF |
1365 | } |
1366 | else | |
1367 | { | |
1368 | if (struct_return) | |
1369 | called_method = msg_send_stret; | |
1370 | else | |
1371 | called_method = msg_send; | |
1372 | } | |
1373 | ||
1374 | if (noside == EVAL_SKIP) | |
1375 | goto nosideret; | |
1376 | ||
1377 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
1378 | { | |
1379 | /* If the return type doesn't look like a function type, | |
1380 | call an error. This can happen if somebody tries to | |
1381 | turn a variable into a function call. This is here | |
1382 | because people often want to call, eg, strcmp, which | |
1383 | gdb doesn't know is a function. If gdb isn't asked for | |
1384 | it's opinion (ie. through "whatis"), it won't offer | |
1385 | it. */ | |
1386 | ||
df407dfe | 1387 | struct type *type = value_type (called_method); |
d7f9d729 | 1388 | |
a9fa03de AF |
1389 | if (type && TYPE_CODE (type) == TYPE_CODE_PTR) |
1390 | type = TYPE_TARGET_TYPE (type); | |
1391 | type = TYPE_TARGET_TYPE (type); | |
1392 | ||
1393 | if (type) | |
1394 | { | |
1395 | if ((TYPE_CODE (type) == TYPE_CODE_ERROR) && expect_type) | |
1396 | return allocate_value (expect_type); | |
1397 | else | |
1398 | return allocate_value (type); | |
1399 | } | |
1400 | else | |
8a3fe4f8 | 1401 | error (_("Expression of type other than \"method returning ...\" used as a method")); |
a9fa03de AF |
1402 | } |
1403 | ||
1404 | /* Now depending on whether we found a symbol for the method, | |
1405 | we will either call the runtime dispatcher or the method | |
1406 | directly. */ | |
1407 | ||
1408 | argvec[0] = called_method; | |
1409 | argvec[1] = target; | |
d4dbb9c7 | 1410 | argvec[2] = value_from_longest (long_type, selector); |
a9fa03de AF |
1411 | /* User-supplied arguments. */ |
1412 | for (tem = 0; tem < nargs; tem++) | |
1413 | argvec[tem + 3] = evaluate_subexp_with_coercion (exp, pos, noside); | |
1414 | argvec[tem + 3] = 0; | |
1415 | ||
1416 | if (gnu_runtime && (method != NULL)) | |
1417 | { | |
a9fa03de | 1418 | /* Function objc_msg_lookup returns a pointer. */ |
04624583 | 1419 | deprecated_set_value_type (argvec[0], |
69368a60 | 1420 | lookup_pointer_type (lookup_function_type (value_type (argvec[0])))); |
c253954e | 1421 | argvec[0] = call_function_by_hand (argvec[0], nargs + 2, argvec + 1); |
a9fa03de | 1422 | } |
a9fa03de | 1423 | |
c253954e | 1424 | ret = call_function_by_hand (argvec[0], nargs + 2, argvec + 1); |
a9fa03de AF |
1425 | return ret; |
1426 | } | |
1427 | break; | |
1428 | ||
c906108c SS |
1429 | case OP_FUNCALL: |
1430 | (*pos) += 2; | |
1431 | op = exp->elts[*pos].opcode; | |
1432 | nargs = longest_to_int (exp->elts[pc + 1].longconst); | |
1433 | /* Allocate arg vector, including space for the function to be | |
c5aa993b | 1434 | called in argvec[0] and a terminating NULL */ |
f976f6d4 | 1435 | argvec = (struct value **) alloca (sizeof (struct value *) * (nargs + 3)); |
c906108c SS |
1436 | if (op == STRUCTOP_MEMBER || op == STRUCTOP_MPTR) |
1437 | { | |
c906108c SS |
1438 | nargs++; |
1439 | /* First, evaluate the structure into arg2 */ | |
1440 | pc2 = (*pos)++; | |
1441 | ||
1442 | if (noside == EVAL_SKIP) | |
1443 | goto nosideret; | |
1444 | ||
1445 | if (op == STRUCTOP_MEMBER) | |
1446 | { | |
1447 | arg2 = evaluate_subexp_for_address (exp, pos, noside); | |
1448 | } | |
1449 | else | |
1450 | { | |
1451 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
1452 | } | |
1453 | ||
1454 | /* If the function is a virtual function, then the | |
1455 | aggregate value (providing the structure) plays | |
1456 | its part by providing the vtable. Otherwise, | |
1457 | it is just along for the ride: call the function | |
1458 | directly. */ | |
1459 | ||
1460 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
1461 | ||
0d5de010 DJ |
1462 | if (TYPE_CODE (check_typedef (value_type (arg1))) |
1463 | != TYPE_CODE_METHODPTR) | |
1464 | error (_("Non-pointer-to-member value used in pointer-to-member " | |
1465 | "construct")); | |
c906108c | 1466 | |
0d5de010 | 1467 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
c906108c | 1468 | { |
0d5de010 | 1469 | struct type *method_type = check_typedef (value_type (arg1)); |
d7f9d729 | 1470 | |
0d5de010 | 1471 | arg1 = value_zero (method_type, not_lval); |
c906108c SS |
1472 | } |
1473 | else | |
0d5de010 | 1474 | arg1 = cplus_method_ptr_to_value (&arg2, arg1); |
c906108c SS |
1475 | |
1476 | /* Now, say which argument to start evaluating from */ | |
1477 | tem = 2; | |
1478 | } | |
1479 | else if (op == STRUCTOP_STRUCT || op == STRUCTOP_PTR) | |
1480 | { | |
1481 | /* Hair for method invocations */ | |
1482 | int tem2; | |
1483 | ||
1484 | nargs++; | |
1485 | /* First, evaluate the structure into arg2 */ | |
1486 | pc2 = (*pos)++; | |
1487 | tem2 = longest_to_int (exp->elts[pc2 + 1].longconst); | |
1488 | *pos += 3 + BYTES_TO_EXP_ELEM (tem2 + 1); | |
1489 | if (noside == EVAL_SKIP) | |
1490 | goto nosideret; | |
1491 | ||
1492 | if (op == STRUCTOP_STRUCT) | |
1493 | { | |
1494 | /* If v is a variable in a register, and the user types | |
c5aa993b JM |
1495 | v.method (), this will produce an error, because v has |
1496 | no address. | |
1497 | ||
1498 | A possible way around this would be to allocate a | |
1499 | copy of the variable on the stack, copy in the | |
1500 | contents, call the function, and copy out the | |
1501 | contents. I.e. convert this from call by reference | |
1502 | to call by copy-return (or whatever it's called). | |
1503 | However, this does not work because it is not the | |
1504 | same: the method being called could stash a copy of | |
1505 | the address, and then future uses through that address | |
1506 | (after the method returns) would be expected to | |
1507 | use the variable itself, not some copy of it. */ | |
c906108c SS |
1508 | arg2 = evaluate_subexp_for_address (exp, pos, noside); |
1509 | } | |
1510 | else | |
1511 | { | |
1512 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
1513 | } | |
1514 | /* Now, say which argument to start evaluating from */ | |
1515 | tem = 2; | |
1516 | } | |
714f19d5 TT |
1517 | else if (op == OP_SCOPE |
1518 | && overload_resolution | |
1519 | && (exp->language_defn->la_language == language_cplus)) | |
1520 | { | |
1521 | /* Unpack it locally so we can properly handle overload | |
1522 | resolution. */ | |
714f19d5 TT |
1523 | char *name; |
1524 | int local_tem; | |
1525 | ||
1526 | pc2 = (*pos)++; | |
1527 | local_tem = longest_to_int (exp->elts[pc2 + 2].longconst); | |
1528 | (*pos) += 4 + BYTES_TO_EXP_ELEM (local_tem + 1); | |
1529 | type = exp->elts[pc2 + 1].type; | |
1530 | name = &exp->elts[pc2 + 3].string; | |
1531 | ||
1532 | function = NULL; | |
1533 | function_name = NULL; | |
1534 | if (TYPE_CODE (type) == TYPE_CODE_NAMESPACE) | |
1535 | { | |
1536 | function = cp_lookup_symbol_namespace (TYPE_TAG_NAME (type), | |
94af9270 | 1537 | name, |
714f19d5 | 1538 | get_selected_block (0), |
13387711 | 1539 | VAR_DOMAIN); |
714f19d5 TT |
1540 | if (function == NULL) |
1541 | error (_("No symbol \"%s\" in namespace \"%s\"."), | |
1542 | name, TYPE_TAG_NAME (type)); | |
1543 | ||
1544 | tem = 1; | |
1545 | } | |
1546 | else | |
1547 | { | |
1548 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_STRUCT | |
1549 | || TYPE_CODE (type) == TYPE_CODE_UNION); | |
1550 | function_name = name; | |
1551 | ||
1552 | arg2 = value_zero (type, lval_memory); | |
1553 | ++nargs; | |
1554 | tem = 2; | |
1555 | } | |
1556 | } | |
7322dca9 SW |
1557 | else if (op == OP_ADL_FUNC) |
1558 | { | |
1559 | /* Save the function position and move pos so that the arguments | |
1560 | can be evaluated. */ | |
1561 | int func_name_len; | |
d7f9d729 | 1562 | |
7322dca9 SW |
1563 | save_pos1 = *pos; |
1564 | tem = 1; | |
1565 | ||
1566 | func_name_len = longest_to_int (exp->elts[save_pos1 + 3].longconst); | |
1567 | (*pos) += 6 + BYTES_TO_EXP_ELEM (func_name_len + 1); | |
1568 | } | |
c906108c SS |
1569 | else |
1570 | { | |
1571 | /* Non-method function call */ | |
1572 | save_pos1 = *pos; | |
c906108c | 1573 | tem = 1; |
883df6dd SW |
1574 | |
1575 | /* If this is a C++ function wait until overload resolution. */ | |
1576 | if (op == OP_VAR_VALUE | |
1577 | && overload_resolution | |
1578 | && (exp->language_defn->la_language == language_cplus)) | |
c906108c | 1579 | { |
883df6dd SW |
1580 | (*pos) += 4; /* Skip the evaluation of the symbol. */ |
1581 | argvec[0] = NULL; | |
1582 | } | |
1583 | else | |
1584 | { | |
1585 | argvec[0] = evaluate_subexp_with_coercion (exp, pos, noside); | |
1586 | type = value_type (argvec[0]); | |
1587 | if (type && TYPE_CODE (type) == TYPE_CODE_PTR) | |
1588 | type = TYPE_TARGET_TYPE (type); | |
1589 | if (type && TYPE_CODE (type) == TYPE_CODE_FUNC) | |
c906108c | 1590 | { |
883df6dd SW |
1591 | for (; tem <= nargs && tem <= TYPE_NFIELDS (type); tem++) |
1592 | { | |
1593 | argvec[tem] = evaluate_subexp (TYPE_FIELD_TYPE (type, tem - 1), | |
1594 | exp, pos, noside); | |
1595 | } | |
c906108c SS |
1596 | } |
1597 | } | |
1598 | } | |
1599 | ||
1600 | /* Evaluate arguments */ | |
1601 | for (; tem <= nargs; tem++) | |
1602 | { | |
1603 | /* Ensure that array expressions are coerced into pointer objects. */ | |
1604 | argvec[tem] = evaluate_subexp_with_coercion (exp, pos, noside); | |
1605 | } | |
1606 | ||
1607 | /* signal end of arglist */ | |
1608 | argvec[tem] = 0; | |
7322dca9 SW |
1609 | if (op == OP_ADL_FUNC) |
1610 | { | |
1611 | struct symbol *symp; | |
1612 | char *func_name; | |
1613 | int name_len; | |
1614 | int string_pc = save_pos1 + 3; | |
1615 | ||
1616 | /* Extract the function name. */ | |
1617 | name_len = longest_to_int (exp->elts[string_pc].longconst); | |
1618 | func_name = (char *) alloca (name_len + 1); | |
1619 | strcpy (func_name, &exp->elts[string_pc + 1].string); | |
1620 | ||
1621 | /* Prepare list of argument types for overload resolution */ | |
1622 | arg_types = (struct type **) alloca (nargs * (sizeof (struct type *))); | |
1623 | for (ix = 1; ix <= nargs; ix++) | |
1624 | arg_types[ix - 1] = value_type (argvec[ix]); | |
1625 | ||
1626 | find_overload_match (arg_types, nargs, func_name, | |
4c3376c8 | 1627 | NON_METHOD /* not method */ , 0 /* strict match */ , |
7322dca9 SW |
1628 | NULL, NULL /* pass NULL symbol since symbol is unknown */ , |
1629 | NULL, &symp, NULL, 0); | |
1630 | ||
1631 | /* Now fix the expression being evaluated. */ | |
1632 | exp->elts[save_pos1 + 2].symbol = symp; | |
1633 | argvec[0] = evaluate_subexp_with_coercion (exp, &save_pos1, noside); | |
1634 | } | |
c906108c | 1635 | |
714f19d5 TT |
1636 | if (op == STRUCTOP_STRUCT || op == STRUCTOP_PTR |
1637 | || (op == OP_SCOPE && function_name != NULL)) | |
c906108c SS |
1638 | { |
1639 | int static_memfuncp; | |
714f19d5 | 1640 | char *tstr; |
c5aa993b JM |
1641 | |
1642 | /* Method invocation : stuff "this" as first parameter */ | |
9b013045 | 1643 | argvec[1] = arg2; |
714f19d5 TT |
1644 | |
1645 | if (op != OP_SCOPE) | |
1646 | { | |
1647 | /* Name of method from expression */ | |
1648 | tstr = &exp->elts[pc2 + 2].string; | |
1649 | } | |
1650 | else | |
1651 | tstr = function_name; | |
c5aa993b JM |
1652 | |
1653 | if (overload_resolution && (exp->language_defn->la_language == language_cplus)) | |
1654 | { | |
1655 | /* Language is C++, do some overload resolution before evaluation */ | |
61051030 | 1656 | struct value *valp = NULL; |
c5aa993b JM |
1657 | |
1658 | /* Prepare list of argument types for overload resolution */ | |
c2636352 | 1659 | arg_types = (struct type **) alloca (nargs * (sizeof (struct type *))); |
c5aa993b | 1660 | for (ix = 1; ix <= nargs; ix++) |
df407dfe | 1661 | arg_types[ix - 1] = value_type (argvec[ix]); |
c5aa993b JM |
1662 | |
1663 | (void) find_overload_match (arg_types, nargs, tstr, | |
4c3376c8 | 1664 | METHOD /* method */ , 0 /* strict match */ , |
7f8c9282 | 1665 | &arg2 /* the object */ , NULL, |
7322dca9 | 1666 | &valp, NULL, &static_memfuncp, 0); |
c5aa993b | 1667 | |
714f19d5 TT |
1668 | if (op == OP_SCOPE && !static_memfuncp) |
1669 | { | |
1670 | /* For the time being, we don't handle this. */ | |
1671 | error (_("Call to overloaded function %s requires " | |
1672 | "`this' pointer"), | |
1673 | function_name); | |
1674 | } | |
c5aa993b JM |
1675 | argvec[1] = arg2; /* the ``this'' pointer */ |
1676 | argvec[0] = valp; /* use the method found after overload resolution */ | |
1677 | } | |
1678 | else | |
1679 | /* Non-C++ case -- or no overload resolution */ | |
1680 | { | |
9b013045 | 1681 | struct value *temp = arg2; |
d7f9d729 | 1682 | |
c5aa993b JM |
1683 | argvec[0] = value_struct_elt (&temp, argvec + 1, tstr, |
1684 | &static_memfuncp, | |
1685 | op == STRUCTOP_STRUCT | |
1686 | ? "structure" : "structure pointer"); | |
9b013045 PS |
1687 | /* value_struct_elt updates temp with the correct value |
1688 | of the ``this'' pointer if necessary, so modify argvec[1] to | |
1689 | reflect any ``this'' changes. */ | |
df407dfe | 1690 | arg2 = value_from_longest (lookup_pointer_type(value_type (temp)), |
42ae5230 | 1691 | value_address (temp) |
13c3b5f5 | 1692 | + value_embedded_offset (temp)); |
c5aa993b JM |
1693 | argvec[1] = arg2; /* the ``this'' pointer */ |
1694 | } | |
c906108c SS |
1695 | |
1696 | if (static_memfuncp) | |
1697 | { | |
1698 | argvec[1] = argvec[0]; | |
1699 | nargs--; | |
1700 | argvec++; | |
1701 | } | |
1702 | } | |
1703 | else if (op == STRUCTOP_MEMBER || op == STRUCTOP_MPTR) | |
1704 | { | |
1705 | argvec[1] = arg2; | |
1706 | argvec[0] = arg1; | |
1707 | } | |
714f19d5 | 1708 | else if (op == OP_VAR_VALUE || (op == OP_SCOPE && function != NULL)) |
c5aa993b | 1709 | { |
c906108c | 1710 | /* Non-member function being called */ |
917317f4 JM |
1711 | /* fn: This can only be done for C++ functions. A C-style function |
1712 | in a C++ program, for instance, does not have the fields that | |
1713 | are expected here */ | |
c906108c | 1714 | |
c5aa993b JM |
1715 | if (overload_resolution && (exp->language_defn->la_language == language_cplus)) |
1716 | { | |
1717 | /* Language is C++, do some overload resolution before evaluation */ | |
1718 | struct symbol *symp; | |
7322dca9 SW |
1719 | int no_adl = 0; |
1720 | ||
1721 | /* If a scope has been specified disable ADL. */ | |
1722 | if (op == OP_SCOPE) | |
1723 | no_adl = 1; | |
c5aa993b | 1724 | |
714f19d5 TT |
1725 | if (op == OP_VAR_VALUE) |
1726 | function = exp->elts[save_pos1+2].symbol; | |
1727 | ||
c5aa993b | 1728 | /* Prepare list of argument types for overload resolution */ |
c2636352 | 1729 | arg_types = (struct type **) alloca (nargs * (sizeof (struct type *))); |
c5aa993b | 1730 | for (ix = 1; ix <= nargs; ix++) |
df407dfe | 1731 | arg_types[ix - 1] = value_type (argvec[ix]); |
c5aa993b JM |
1732 | |
1733 | (void) find_overload_match (arg_types, nargs, NULL /* no need for name */ , | |
4c3376c8 SW |
1734 | NON_METHOD /* not method */ , 0 /* strict match */ , |
1735 | NULL, function /* the function */ , | |
7322dca9 | 1736 | NULL, &symp, NULL, no_adl); |
c5aa993b | 1737 | |
714f19d5 TT |
1738 | if (op == OP_VAR_VALUE) |
1739 | { | |
1740 | /* Now fix the expression being evaluated */ | |
1741 | exp->elts[save_pos1+2].symbol = symp; | |
1742 | argvec[0] = evaluate_subexp_with_coercion (exp, &save_pos1, | |
1743 | noside); | |
1744 | } | |
1745 | else | |
1746 | argvec[0] = value_of_variable (symp, get_selected_block (0)); | |
c5aa993b JM |
1747 | } |
1748 | else | |
1749 | { | |
1750 | /* Not C++, or no overload resolution allowed */ | |
1751 | /* nothing to be done; argvec already correctly set up */ | |
1752 | } | |
1753 | } | |
917317f4 JM |
1754 | else |
1755 | { | |
1756 | /* It is probably a C-style function */ | |
1757 | /* nothing to be done; argvec already correctly set up */ | |
1758 | } | |
c906108c SS |
1759 | |
1760 | do_call_it: | |
1761 | ||
1762 | if (noside == EVAL_SKIP) | |
1763 | goto nosideret; | |
0478d61c | 1764 | if (argvec[0] == NULL) |
8a3fe4f8 | 1765 | error (_("Cannot evaluate function -- may be inlined")); |
c906108c SS |
1766 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
1767 | { | |
1768 | /* If the return type doesn't look like a function type, call an | |
1769 | error. This can happen if somebody tries to turn a variable into | |
1770 | a function call. This is here because people often want to | |
1771 | call, eg, strcmp, which gdb doesn't know is a function. If | |
1772 | gdb isn't asked for it's opinion (ie. through "whatis"), | |
1773 | it won't offer it. */ | |
1774 | ||
329719ec | 1775 | struct type *ftype = value_type (argvec[0]); |
c906108c | 1776 | |
329719ec TT |
1777 | if (TYPE_CODE (ftype) == TYPE_CODE_INTERNAL_FUNCTION) |
1778 | { | |
1779 | /* We don't know anything about what the internal | |
1780 | function might return, but we have to return | |
1781 | something. */ | |
1782 | return value_zero (builtin_type (exp->gdbarch)->builtin_int, | |
1783 | not_lval); | |
1784 | } | |
1785 | else if (TYPE_TARGET_TYPE (ftype)) | |
1786 | return allocate_value (TYPE_TARGET_TYPE (ftype)); | |
c906108c | 1787 | else |
8a3fe4f8 | 1788 | error (_("Expression of type other than \"Function returning ...\" used as function")); |
c906108c | 1789 | } |
bc3b79fd | 1790 | if (TYPE_CODE (value_type (argvec[0])) == TYPE_CODE_INTERNAL_FUNCTION) |
d452c4bc UW |
1791 | return call_internal_function (exp->gdbarch, exp->language_defn, |
1792 | argvec[0], nargs, argvec + 1); | |
bc3b79fd | 1793 | |
c906108c SS |
1794 | return call_function_by_hand (argvec[0], nargs, argvec + 1); |
1795 | /* pai: FIXME save value from call_function_by_hand, then adjust pc by adjust_fn_pc if +ve */ | |
1796 | ||
c5aa993b | 1797 | case OP_F77_UNDETERMINED_ARGLIST: |
c906108c SS |
1798 | |
1799 | /* Remember that in F77, functions, substring ops and | |
1800 | array subscript operations cannot be disambiguated | |
1801 | at parse time. We have made all array subscript operations, | |
1802 | substring operations as well as function calls come here | |
1803 | and we now have to discover what the heck this thing actually was. | |
c5aa993b | 1804 | If it is a function, we process just as if we got an OP_FUNCALL. */ |
c906108c | 1805 | |
c5aa993b | 1806 | nargs = longest_to_int (exp->elts[pc + 1].longconst); |
c906108c SS |
1807 | (*pos) += 2; |
1808 | ||
c5aa993b | 1809 | /* First determine the type code we are dealing with. */ |
c906108c | 1810 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
df407dfe | 1811 | type = check_typedef (value_type (arg1)); |
c906108c SS |
1812 | code = TYPE_CODE (type); |
1813 | ||
df0ca547 WZ |
1814 | if (code == TYPE_CODE_PTR) |
1815 | { | |
1816 | /* Fortran always passes variable to subroutines as pointer. | |
1817 | So we need to look into its target type to see if it is | |
1818 | array, string or function. If it is, we need to switch | |
1819 | to the target value the original one points to. */ | |
1820 | struct type *target_type = check_typedef (TYPE_TARGET_TYPE (type)); | |
1821 | ||
1822 | if (TYPE_CODE (target_type) == TYPE_CODE_ARRAY | |
1823 | || TYPE_CODE (target_type) == TYPE_CODE_STRING | |
1824 | || TYPE_CODE (target_type) == TYPE_CODE_FUNC) | |
1825 | { | |
1826 | arg1 = value_ind (arg1); | |
1827 | type = check_typedef (value_type (arg1)); | |
1828 | code = TYPE_CODE (type); | |
1829 | } | |
1830 | } | |
1831 | ||
c5aa993b | 1832 | switch (code) |
c906108c SS |
1833 | { |
1834 | case TYPE_CODE_ARRAY: | |
0b4e1325 WZ |
1835 | if (exp->elts[*pos].opcode == OP_F90_RANGE) |
1836 | return value_f90_subarray (arg1, exp, pos, noside); | |
1837 | else | |
1838 | goto multi_f77_subscript; | |
c906108c SS |
1839 | |
1840 | case TYPE_CODE_STRING: | |
0b4e1325 WZ |
1841 | if (exp->elts[*pos].opcode == OP_F90_RANGE) |
1842 | return value_f90_subarray (arg1, exp, pos, noside); | |
1843 | else | |
1844 | { | |
1845 | arg2 = evaluate_subexp_with_coercion (exp, pos, noside); | |
2497b498 | 1846 | return value_subscript (arg1, value_as_long (arg2)); |
0b4e1325 | 1847 | } |
c906108c SS |
1848 | |
1849 | case TYPE_CODE_PTR: | |
1850 | case TYPE_CODE_FUNC: | |
1851 | /* It's a function call. */ | |
1852 | /* Allocate arg vector, including space for the function to be | |
1853 | called in argvec[0] and a terminating NULL */ | |
f976f6d4 | 1854 | argvec = (struct value **) alloca (sizeof (struct value *) * (nargs + 2)); |
c906108c SS |
1855 | argvec[0] = arg1; |
1856 | tem = 1; | |
1857 | for (; tem <= nargs; tem++) | |
1858 | argvec[tem] = evaluate_subexp_with_coercion (exp, pos, noside); | |
c5aa993b | 1859 | argvec[tem] = 0; /* signal end of arglist */ |
c906108c SS |
1860 | goto do_call_it; |
1861 | ||
1862 | default: | |
8a3fe4f8 | 1863 | error (_("Cannot perform substring on this type")); |
c906108c SS |
1864 | } |
1865 | ||
c906108c SS |
1866 | case OP_COMPLEX: |
1867 | /* We have a complex number, There should be 2 floating | |
c5aa993b | 1868 | point numbers that compose it */ |
c806c55a | 1869 | (*pos) += 2; |
c906108c | 1870 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
c5aa993b | 1871 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
c906108c | 1872 | |
c806c55a | 1873 | return value_literal_complex (arg1, arg2, exp->elts[pc + 1].type); |
c906108c SS |
1874 | |
1875 | case STRUCTOP_STRUCT: | |
1876 | tem = longest_to_int (exp->elts[pc + 1].longconst); | |
1877 | (*pos) += 3 + BYTES_TO_EXP_ELEM (tem + 1); | |
1878 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
1879 | if (noside == EVAL_SKIP) | |
1880 | goto nosideret; | |
1881 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
df407dfe | 1882 | return value_zero (lookup_struct_elt_type (value_type (arg1), |
c906108c SS |
1883 | &exp->elts[pc + 2].string, |
1884 | 0), | |
1885 | lval_memory); | |
1886 | else | |
1887 | { | |
61051030 | 1888 | struct value *temp = arg1; |
d7f9d729 | 1889 | |
c906108c SS |
1890 | return value_struct_elt (&temp, NULL, &exp->elts[pc + 2].string, |
1891 | NULL, "structure"); | |
1892 | } | |
1893 | ||
1894 | case STRUCTOP_PTR: | |
1895 | tem = longest_to_int (exp->elts[pc + 1].longconst); | |
1896 | (*pos) += 3 + BYTES_TO_EXP_ELEM (tem + 1); | |
1897 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
1898 | if (noside == EVAL_SKIP) | |
1899 | goto nosideret; | |
070ad9f0 DB |
1900 | |
1901 | /* JYG: if print object is on we need to replace the base type | |
1902 | with rtti type in order to continue on with successful | |
1903 | lookup of member / method only available in the rtti type. */ | |
1904 | { | |
df407dfe | 1905 | struct type *type = value_type (arg1); |
070ad9f0 DB |
1906 | struct type *real_type; |
1907 | int full, top, using_enc; | |
79a45b7d TT |
1908 | struct value_print_options opts; |
1909 | ||
1910 | get_user_print_options (&opts); | |
905e0470 PM |
1911 | if (opts.objectprint && TYPE_TARGET_TYPE(type) |
1912 | && (TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_CLASS)) | |
070ad9f0 DB |
1913 | { |
1914 | real_type = value_rtti_target_type (arg1, &full, &top, &using_enc); | |
1915 | if (real_type) | |
1916 | { | |
1917 | if (TYPE_CODE (type) == TYPE_CODE_PTR) | |
1918 | real_type = lookup_pointer_type (real_type); | |
1919 | else | |
1920 | real_type = lookup_reference_type (real_type); | |
1921 | ||
1922 | arg1 = value_cast (real_type, arg1); | |
1923 | } | |
1924 | } | |
1925 | } | |
1926 | ||
c906108c | 1927 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
df407dfe | 1928 | return value_zero (lookup_struct_elt_type (value_type (arg1), |
c906108c SS |
1929 | &exp->elts[pc + 2].string, |
1930 | 0), | |
1931 | lval_memory); | |
1932 | else | |
1933 | { | |
61051030 | 1934 | struct value *temp = arg1; |
d7f9d729 | 1935 | |
c906108c SS |
1936 | return value_struct_elt (&temp, NULL, &exp->elts[pc + 2].string, |
1937 | NULL, "structure pointer"); | |
1938 | } | |
1939 | ||
1940 | case STRUCTOP_MEMBER: | |
0d5de010 DJ |
1941 | case STRUCTOP_MPTR: |
1942 | if (op == STRUCTOP_MEMBER) | |
1943 | arg1 = evaluate_subexp_for_address (exp, pos, noside); | |
1944 | else | |
1945 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
1946 | ||
c906108c SS |
1947 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
1948 | ||
0d5de010 DJ |
1949 | if (noside == EVAL_SKIP) |
1950 | goto nosideret; | |
c5aa993b | 1951 | |
0d5de010 DJ |
1952 | type = check_typedef (value_type (arg2)); |
1953 | switch (TYPE_CODE (type)) | |
1954 | { | |
1955 | case TYPE_CODE_METHODPTR: | |
0d5de010 DJ |
1956 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
1957 | return value_zero (TYPE_TARGET_TYPE (type), not_lval); | |
1958 | else | |
1959 | { | |
1960 | arg2 = cplus_method_ptr_to_value (&arg1, arg2); | |
1961 | gdb_assert (TYPE_CODE (value_type (arg2)) == TYPE_CODE_PTR); | |
1962 | return value_ind (arg2); | |
1963 | } | |
c906108c | 1964 | |
0d5de010 DJ |
1965 | case TYPE_CODE_MEMBERPTR: |
1966 | /* Now, convert these values to an address. */ | |
1967 | arg1 = value_cast (lookup_pointer_type (TYPE_DOMAIN_TYPE (type)), | |
1968 | arg1); | |
c906108c | 1969 | |
0d5de010 | 1970 | mem_offset = value_as_long (arg2); |
c906108c | 1971 | |
0d5de010 DJ |
1972 | arg3 = value_from_pointer (lookup_pointer_type (TYPE_TARGET_TYPE (type)), |
1973 | value_as_long (arg1) + mem_offset); | |
1974 | return value_ind (arg3); | |
1975 | ||
1976 | default: | |
1977 | error (_("non-pointer-to-member value used in pointer-to-member construct")); | |
c5aa993b | 1978 | } |
c906108c | 1979 | |
072bba3b KS |
1980 | case TYPE_INSTANCE: |
1981 | nargs = longest_to_int (exp->elts[pc + 1].longconst); | |
1982 | arg_types = (struct type **) alloca (nargs * sizeof (struct type *)); | |
1983 | for (ix = 0; ix < nargs; ++ix) | |
1984 | arg_types[ix] = exp->elts[pc + 1 + ix + 1].type; | |
1985 | ||
1986 | expect_type = make_params (nargs, arg_types); | |
1987 | *(pos) += 3 + nargs; | |
1988 | arg1 = evaluate_subexp_standard (expect_type, exp, pos, noside); | |
1989 | xfree (TYPE_FIELDS (expect_type)); | |
1990 | xfree (TYPE_MAIN_TYPE (expect_type)); | |
1991 | xfree (expect_type); | |
1992 | return arg1; | |
1993 | ||
c906108c SS |
1994 | case BINOP_CONCAT: |
1995 | arg1 = evaluate_subexp_with_coercion (exp, pos, noside); | |
1996 | arg2 = evaluate_subexp_with_coercion (exp, pos, noside); | |
1997 | if (noside == EVAL_SKIP) | |
1998 | goto nosideret; | |
1999 | if (binop_user_defined_p (op, arg1, arg2)) | |
2000 | return value_x_binop (arg1, arg2, op, OP_NULL, noside); | |
2001 | else | |
2002 | return value_concat (arg1, arg2); | |
2003 | ||
2004 | case BINOP_ASSIGN: | |
2005 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
df407dfe | 2006 | arg2 = evaluate_subexp (value_type (arg1), exp, pos, noside); |
c906108c | 2007 | |
c906108c SS |
2008 | if (noside == EVAL_SKIP || noside == EVAL_AVOID_SIDE_EFFECTS) |
2009 | return arg1; | |
2010 | if (binop_user_defined_p (op, arg1, arg2)) | |
2011 | return value_x_binop (arg1, arg2, op, OP_NULL, noside); | |
2012 | else | |
2013 | return value_assign (arg1, arg2); | |
2014 | ||
2015 | case BINOP_ASSIGN_MODIFY: | |
2016 | (*pos) += 2; | |
2017 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
df407dfe | 2018 | arg2 = evaluate_subexp (value_type (arg1), exp, pos, noside); |
c906108c SS |
2019 | if (noside == EVAL_SKIP || noside == EVAL_AVOID_SIDE_EFFECTS) |
2020 | return arg1; | |
2021 | op = exp->elts[pc + 1].opcode; | |
2022 | if (binop_user_defined_p (op, arg1, arg2)) | |
2023 | return value_x_binop (arg1, arg2, BINOP_ASSIGN_MODIFY, op, noside); | |
cc73bb8c TT |
2024 | else if (op == BINOP_ADD && ptrmath_type_p (exp->language_defn, |
2025 | value_type (arg1)) | |
2497b498 UW |
2026 | && is_integral_type (value_type (arg2))) |
2027 | arg2 = value_ptradd (arg1, value_as_long (arg2)); | |
cc73bb8c TT |
2028 | else if (op == BINOP_SUB && ptrmath_type_p (exp->language_defn, |
2029 | value_type (arg1)) | |
2497b498 UW |
2030 | && is_integral_type (value_type (arg2))) |
2031 | arg2 = value_ptradd (arg1, - value_as_long (arg2)); | |
c906108c | 2032 | else |
f44316fa UW |
2033 | { |
2034 | struct value *tmp = arg1; | |
2035 | ||
2036 | /* For shift and integer exponentiation operations, | |
2037 | only promote the first argument. */ | |
2038 | if ((op == BINOP_LSH || op == BINOP_RSH || op == BINOP_EXP) | |
2039 | && is_integral_type (value_type (arg2))) | |
2040 | unop_promote (exp->language_defn, exp->gdbarch, &tmp); | |
2041 | else | |
2042 | binop_promote (exp->language_defn, exp->gdbarch, &tmp, &arg2); | |
2043 | ||
2044 | arg2 = value_binop (tmp, arg2, op); | |
2045 | } | |
c906108c SS |
2046 | return value_assign (arg1, arg2); |
2047 | ||
2048 | case BINOP_ADD: | |
2049 | arg1 = evaluate_subexp_with_coercion (exp, pos, noside); | |
2050 | arg2 = evaluate_subexp_with_coercion (exp, pos, noside); | |
2051 | if (noside == EVAL_SKIP) | |
2052 | goto nosideret; | |
2053 | if (binop_user_defined_p (op, arg1, arg2)) | |
2054 | return value_x_binop (arg1, arg2, op, OP_NULL, noside); | |
cc73bb8c | 2055 | else if (ptrmath_type_p (exp->language_defn, value_type (arg1)) |
2497b498 UW |
2056 | && is_integral_type (value_type (arg2))) |
2057 | return value_ptradd (arg1, value_as_long (arg2)); | |
cc73bb8c | 2058 | else if (ptrmath_type_p (exp->language_defn, value_type (arg2)) |
2497b498 UW |
2059 | && is_integral_type (value_type (arg1))) |
2060 | return value_ptradd (arg2, value_as_long (arg1)); | |
c906108c | 2061 | else |
f44316fa UW |
2062 | { |
2063 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); | |
2064 | return value_binop (arg1, arg2, BINOP_ADD); | |
2065 | } | |
c906108c SS |
2066 | |
2067 | case BINOP_SUB: | |
2068 | arg1 = evaluate_subexp_with_coercion (exp, pos, noside); | |
2069 | arg2 = evaluate_subexp_with_coercion (exp, pos, noside); | |
2070 | if (noside == EVAL_SKIP) | |
2071 | goto nosideret; | |
2072 | if (binop_user_defined_p (op, arg1, arg2)) | |
2073 | return value_x_binop (arg1, arg2, op, OP_NULL, noside); | |
cc73bb8c TT |
2074 | else if (ptrmath_type_p (exp->language_defn, value_type (arg1)) |
2075 | && ptrmath_type_p (exp->language_defn, value_type (arg2))) | |
89eef114 | 2076 | { |
2497b498 UW |
2077 | /* FIXME -- should be ptrdiff_t */ |
2078 | type = builtin_type (exp->gdbarch)->builtin_long; | |
2079 | return value_from_longest (type, value_ptrdiff (arg1, arg2)); | |
89eef114 | 2080 | } |
cc73bb8c | 2081 | else if (ptrmath_type_p (exp->language_defn, value_type (arg1)) |
2497b498 UW |
2082 | && is_integral_type (value_type (arg2))) |
2083 | return value_ptradd (arg1, - value_as_long (arg2)); | |
c906108c | 2084 | else |
f44316fa UW |
2085 | { |
2086 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); | |
2087 | return value_binop (arg1, arg2, BINOP_SUB); | |
2088 | } | |
c906108c | 2089 | |
bd49c137 | 2090 | case BINOP_EXP: |
c906108c SS |
2091 | case BINOP_MUL: |
2092 | case BINOP_DIV: | |
9b3442ee | 2093 | case BINOP_INTDIV: |
c906108c SS |
2094 | case BINOP_REM: |
2095 | case BINOP_MOD: | |
2096 | case BINOP_LSH: | |
2097 | case BINOP_RSH: | |
2098 | case BINOP_BITWISE_AND: | |
2099 | case BINOP_BITWISE_IOR: | |
2100 | case BINOP_BITWISE_XOR: | |
2101 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
2102 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
2103 | if (noside == EVAL_SKIP) | |
2104 | goto nosideret; | |
2105 | if (binop_user_defined_p (op, arg1, arg2)) | |
2106 | return value_x_binop (arg1, arg2, op, OP_NULL, noside); | |
c906108c | 2107 | else |
301f0ecf DE |
2108 | { |
2109 | /* If EVAL_AVOID_SIDE_EFFECTS and we're dividing by zero, | |
2110 | fudge arg2 to avoid division-by-zero, the caller is | |
2111 | (theoretically) only looking for the type of the result. */ | |
2112 | if (noside == EVAL_AVOID_SIDE_EFFECTS | |
2113 | /* ??? Do we really want to test for BINOP_MOD here? | |
2114 | The implementation of value_binop gives it a well-defined | |
2115 | value. */ | |
2116 | && (op == BINOP_DIV | |
2117 | || op == BINOP_INTDIV | |
2118 | || op == BINOP_REM | |
2119 | || op == BINOP_MOD) | |
2120 | && value_logical_not (arg2)) | |
2121 | { | |
2122 | struct value *v_one, *retval; | |
2123 | ||
2124 | v_one = value_one (value_type (arg2), not_lval); | |
f44316fa | 2125 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &v_one); |
301f0ecf DE |
2126 | retval = value_binop (arg1, v_one, op); |
2127 | return retval; | |
2128 | } | |
2129 | else | |
f44316fa UW |
2130 | { |
2131 | /* For shift and integer exponentiation operations, | |
2132 | only promote the first argument. */ | |
2133 | if ((op == BINOP_LSH || op == BINOP_RSH || op == BINOP_EXP) | |
2134 | && is_integral_type (value_type (arg2))) | |
2135 | unop_promote (exp->language_defn, exp->gdbarch, &arg1); | |
2136 | else | |
2137 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); | |
2138 | ||
2139 | return value_binop (arg1, arg2, op); | |
2140 | } | |
301f0ecf | 2141 | } |
c906108c SS |
2142 | |
2143 | case BINOP_RANGE: | |
2144 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
2145 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
2146 | if (noside == EVAL_SKIP) | |
2147 | goto nosideret; | |
8a3fe4f8 | 2148 | error (_("':' operator used in invalid context")); |
c906108c SS |
2149 | |
2150 | case BINOP_SUBSCRIPT: | |
74de6778 TT |
2151 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
2152 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
c906108c SS |
2153 | if (noside == EVAL_SKIP) |
2154 | goto nosideret; | |
2155 | if (binop_user_defined_p (op, arg1, arg2)) | |
2156 | return value_x_binop (arg1, arg2, op, OP_NULL, noside); | |
2157 | else | |
c5aa993b | 2158 | { |
c906108c SS |
2159 | /* If the user attempts to subscript something that is not an |
2160 | array or pointer type (like a plain int variable for example), | |
2161 | then report this as an error. */ | |
2162 | ||
994b9211 | 2163 | arg1 = coerce_ref (arg1); |
df407dfe | 2164 | type = check_typedef (value_type (arg1)); |
c906108c SS |
2165 | if (TYPE_CODE (type) != TYPE_CODE_ARRAY |
2166 | && TYPE_CODE (type) != TYPE_CODE_PTR) | |
2167 | { | |
2168 | if (TYPE_NAME (type)) | |
8a3fe4f8 | 2169 | error (_("cannot subscript something of type `%s'"), |
c906108c SS |
2170 | TYPE_NAME (type)); |
2171 | else | |
8a3fe4f8 | 2172 | error (_("cannot subscript requested type")); |
c906108c SS |
2173 | } |
2174 | ||
2175 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
2176 | return value_zero (TYPE_TARGET_TYPE (type), VALUE_LVAL (arg1)); | |
2177 | else | |
2497b498 | 2178 | return value_subscript (arg1, value_as_long (arg2)); |
c5aa993b | 2179 | } |
c906108c SS |
2180 | |
2181 | case BINOP_IN: | |
2182 | arg1 = evaluate_subexp_with_coercion (exp, pos, noside); | |
2183 | arg2 = evaluate_subexp_with_coercion (exp, pos, noside); | |
2184 | if (noside == EVAL_SKIP) | |
2185 | goto nosideret; | |
fbb06eb1 UW |
2186 | type = language_bool_type (exp->language_defn, exp->gdbarch); |
2187 | return value_from_longest (type, (LONGEST) value_in (arg1, arg2)); | |
c5aa993b | 2188 | |
c906108c SS |
2189 | case MULTI_SUBSCRIPT: |
2190 | (*pos) += 2; | |
2191 | nargs = longest_to_int (exp->elts[pc + 1].longconst); | |
2192 | arg1 = evaluate_subexp_with_coercion (exp, pos, noside); | |
2193 | while (nargs-- > 0) | |
2194 | { | |
2195 | arg2 = evaluate_subexp_with_coercion (exp, pos, noside); | |
2196 | /* FIXME: EVAL_SKIP handling may not be correct. */ | |
2197 | if (noside == EVAL_SKIP) | |
2198 | { | |
2199 | if (nargs > 0) | |
2200 | { | |
2201 | continue; | |
2202 | } | |
2203 | else | |
2204 | { | |
2205 | goto nosideret; | |
2206 | } | |
2207 | } | |
2208 | /* FIXME: EVAL_AVOID_SIDE_EFFECTS handling may not be correct. */ | |
2209 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
2210 | { | |
2211 | /* If the user attempts to subscript something that has no target | |
c5aa993b JM |
2212 | type (like a plain int variable for example), then report this |
2213 | as an error. */ | |
2214 | ||
df407dfe | 2215 | type = TYPE_TARGET_TYPE (check_typedef (value_type (arg1))); |
c906108c SS |
2216 | if (type != NULL) |
2217 | { | |
2218 | arg1 = value_zero (type, VALUE_LVAL (arg1)); | |
2219 | noside = EVAL_SKIP; | |
2220 | continue; | |
2221 | } | |
2222 | else | |
2223 | { | |
8a3fe4f8 | 2224 | error (_("cannot subscript something of type `%s'"), |
df407dfe | 2225 | TYPE_NAME (value_type (arg1))); |
c906108c SS |
2226 | } |
2227 | } | |
c5aa993b | 2228 | |
c906108c SS |
2229 | if (binop_user_defined_p (op, arg1, arg2)) |
2230 | { | |
2231 | arg1 = value_x_binop (arg1, arg2, op, OP_NULL, noside); | |
2232 | } | |
2233 | else | |
2234 | { | |
afc05acb UW |
2235 | arg1 = coerce_ref (arg1); |
2236 | type = check_typedef (value_type (arg1)); | |
2237 | ||
2238 | switch (TYPE_CODE (type)) | |
2239 | { | |
2240 | case TYPE_CODE_PTR: | |
2241 | case TYPE_CODE_ARRAY: | |
2242 | case TYPE_CODE_STRING: | |
2497b498 | 2243 | arg1 = value_subscript (arg1, value_as_long (arg2)); |
afc05acb UW |
2244 | break; |
2245 | ||
2246 | case TYPE_CODE_BITSTRING: | |
fbb06eb1 | 2247 | type = language_bool_type (exp->language_defn, exp->gdbarch); |
2497b498 UW |
2248 | arg1 = value_bitstring_subscript (type, arg1, |
2249 | value_as_long (arg2)); | |
afc05acb UW |
2250 | break; |
2251 | ||
2252 | default: | |
2253 | if (TYPE_NAME (type)) | |
2254 | error (_("cannot subscript something of type `%s'"), | |
2255 | TYPE_NAME (type)); | |
2256 | else | |
2257 | error (_("cannot subscript requested type")); | |
2258 | } | |
c906108c SS |
2259 | } |
2260 | } | |
2261 | return (arg1); | |
2262 | ||
2263 | multi_f77_subscript: | |
c5aa993b | 2264 | { |
7ca2d3a3 DL |
2265 | int subscript_array[MAX_FORTRAN_DIMS]; |
2266 | int array_size_array[MAX_FORTRAN_DIMS]; | |
c5aa993b JM |
2267 | int ndimensions = 1, i; |
2268 | struct type *tmp_type; | |
2269 | int offset_item; /* The array offset where the item lives */ | |
c906108c SS |
2270 | |
2271 | if (nargs > MAX_FORTRAN_DIMS) | |
8a3fe4f8 | 2272 | error (_("Too many subscripts for F77 (%d Max)"), MAX_FORTRAN_DIMS); |
c906108c | 2273 | |
df407dfe | 2274 | tmp_type = check_typedef (value_type (arg1)); |
c906108c SS |
2275 | ndimensions = calc_f77_array_dims (type); |
2276 | ||
2277 | if (nargs != ndimensions) | |
8a3fe4f8 | 2278 | error (_("Wrong number of subscripts")); |
c906108c | 2279 | |
1c9f699c DJ |
2280 | gdb_assert (nargs > 0); |
2281 | ||
c906108c | 2282 | /* Now that we know we have a legal array subscript expression |
c5aa993b | 2283 | let us actually find out where this element exists in the array. */ |
c906108c | 2284 | |
c5aa993b | 2285 | offset_item = 0; |
7ca2d3a3 DL |
2286 | /* Take array indices left to right */ |
2287 | for (i = 0; i < nargs; i++) | |
c906108c | 2288 | { |
c5aa993b | 2289 | /* Evaluate each subscript, It must be a legal integer in F77 */ |
c906108c SS |
2290 | arg2 = evaluate_subexp_with_coercion (exp, pos, noside); |
2291 | ||
c5aa993b | 2292 | /* Fill in the subscript and array size arrays */ |
c906108c SS |
2293 | |
2294 | subscript_array[i] = value_as_long (arg2); | |
7ca2d3a3 | 2295 | } |
c5aa993b | 2296 | |
7ca2d3a3 DL |
2297 | /* Internal type of array is arranged right to left */ |
2298 | for (i = 0; i < nargs; i++) | |
2299 | { | |
d78df370 JK |
2300 | upper = f77_get_upperbound (tmp_type); |
2301 | lower = f77_get_lowerbound (tmp_type); | |
c906108c | 2302 | |
7ca2d3a3 | 2303 | array_size_array[nargs - i - 1] = upper - lower + 1; |
c5aa993b JM |
2304 | |
2305 | /* Zero-normalize subscripts so that offsetting will work. */ | |
2306 | ||
7ca2d3a3 | 2307 | subscript_array[nargs - i - 1] -= lower; |
c906108c SS |
2308 | |
2309 | /* If we are at the bottom of a multidimensional | |
2310 | array type then keep a ptr to the last ARRAY | |
2311 | type around for use when calling value_subscript() | |
2312 | below. This is done because we pretend to value_subscript | |
2313 | that we actually have a one-dimensional array | |
2314 | of base element type that we apply a simple | |
c5aa993b | 2315 | offset to. */ |
c906108c | 2316 | |
7ca2d3a3 | 2317 | if (i < nargs - 1) |
c5aa993b | 2318 | tmp_type = check_typedef (TYPE_TARGET_TYPE (tmp_type)); |
c906108c SS |
2319 | } |
2320 | ||
2321 | /* Now let us calculate the offset for this item */ | |
2322 | ||
7ca2d3a3 | 2323 | offset_item = subscript_array[ndimensions - 1]; |
c5aa993b | 2324 | |
7ca2d3a3 | 2325 | for (i = ndimensions - 1; i > 0; --i) |
c5aa993b | 2326 | offset_item = |
7ca2d3a3 | 2327 | array_size_array[i - 1] * offset_item + subscript_array[i - 1]; |
c906108c | 2328 | |
c906108c SS |
2329 | /* Let us now play a dirty trick: we will take arg1 |
2330 | which is a value node pointing to the topmost level | |
2331 | of the multidimensional array-set and pretend | |
2332 | that it is actually a array of the final element | |
2333 | type, this will ensure that value_subscript() | |
2334 | returns the correct type value */ | |
2335 | ||
04624583 | 2336 | deprecated_set_value_type (arg1, tmp_type); |
2497b498 | 2337 | return value_subscripted_rvalue (arg1, offset_item, 0); |
c906108c SS |
2338 | } |
2339 | ||
2340 | case BINOP_LOGICAL_AND: | |
2341 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
2342 | if (noside == EVAL_SKIP) | |
2343 | { | |
2344 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
2345 | goto nosideret; | |
2346 | } | |
c5aa993b | 2347 | |
c906108c SS |
2348 | oldpos = *pos; |
2349 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, EVAL_AVOID_SIDE_EFFECTS); | |
2350 | *pos = oldpos; | |
c5aa993b JM |
2351 | |
2352 | if (binop_user_defined_p (op, arg1, arg2)) | |
c906108c SS |
2353 | { |
2354 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
2355 | return value_x_binop (arg1, arg2, op, OP_NULL, noside); | |
2356 | } | |
2357 | else | |
2358 | { | |
2359 | tem = value_logical_not (arg1); | |
2360 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, | |
2361 | (tem ? EVAL_SKIP : noside)); | |
fbb06eb1 UW |
2362 | type = language_bool_type (exp->language_defn, exp->gdbarch); |
2363 | return value_from_longest (type, | |
c5aa993b | 2364 | (LONGEST) (!tem && !value_logical_not (arg2))); |
c906108c SS |
2365 | } |
2366 | ||
2367 | case BINOP_LOGICAL_OR: | |
2368 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
2369 | if (noside == EVAL_SKIP) | |
2370 | { | |
2371 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
2372 | goto nosideret; | |
2373 | } | |
c5aa993b | 2374 | |
c906108c SS |
2375 | oldpos = *pos; |
2376 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, EVAL_AVOID_SIDE_EFFECTS); | |
2377 | *pos = oldpos; | |
c5aa993b JM |
2378 | |
2379 | if (binop_user_defined_p (op, arg1, arg2)) | |
c906108c SS |
2380 | { |
2381 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
2382 | return value_x_binop (arg1, arg2, op, OP_NULL, noside); | |
2383 | } | |
2384 | else | |
2385 | { | |
2386 | tem = value_logical_not (arg1); | |
2387 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, | |
2388 | (!tem ? EVAL_SKIP : noside)); | |
fbb06eb1 UW |
2389 | type = language_bool_type (exp->language_defn, exp->gdbarch); |
2390 | return value_from_longest (type, | |
c5aa993b | 2391 | (LONGEST) (!tem || !value_logical_not (arg2))); |
c906108c SS |
2392 | } |
2393 | ||
2394 | case BINOP_EQUAL: | |
2395 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
df407dfe | 2396 | arg2 = evaluate_subexp (value_type (arg1), exp, pos, noside); |
c906108c SS |
2397 | if (noside == EVAL_SKIP) |
2398 | goto nosideret; | |
2399 | if (binop_user_defined_p (op, arg1, arg2)) | |
2400 | { | |
2401 | return value_x_binop (arg1, arg2, op, OP_NULL, noside); | |
2402 | } | |
2403 | else | |
2404 | { | |
f44316fa | 2405 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); |
c906108c | 2406 | tem = value_equal (arg1, arg2); |
fbb06eb1 UW |
2407 | type = language_bool_type (exp->language_defn, exp->gdbarch); |
2408 | return value_from_longest (type, (LONGEST) tem); | |
c906108c SS |
2409 | } |
2410 | ||
2411 | case BINOP_NOTEQUAL: | |
2412 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
df407dfe | 2413 | arg2 = evaluate_subexp (value_type (arg1), exp, pos, noside); |
c906108c SS |
2414 | if (noside == EVAL_SKIP) |
2415 | goto nosideret; | |
2416 | if (binop_user_defined_p (op, arg1, arg2)) | |
2417 | { | |
2418 | return value_x_binop (arg1, arg2, op, OP_NULL, noside); | |
2419 | } | |
2420 | else | |
2421 | { | |
f44316fa | 2422 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); |
c906108c | 2423 | tem = value_equal (arg1, arg2); |
fbb06eb1 UW |
2424 | type = language_bool_type (exp->language_defn, exp->gdbarch); |
2425 | return value_from_longest (type, (LONGEST) ! tem); | |
c906108c SS |
2426 | } |
2427 | ||
2428 | case BINOP_LESS: | |
2429 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
df407dfe | 2430 | arg2 = evaluate_subexp (value_type (arg1), exp, pos, noside); |
c906108c SS |
2431 | if (noside == EVAL_SKIP) |
2432 | goto nosideret; | |
2433 | if (binop_user_defined_p (op, arg1, arg2)) | |
2434 | { | |
2435 | return value_x_binop (arg1, arg2, op, OP_NULL, noside); | |
2436 | } | |
2437 | else | |
2438 | { | |
f44316fa | 2439 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); |
c906108c | 2440 | tem = value_less (arg1, arg2); |
fbb06eb1 UW |
2441 | type = language_bool_type (exp->language_defn, exp->gdbarch); |
2442 | return value_from_longest (type, (LONGEST) tem); | |
c906108c SS |
2443 | } |
2444 | ||
2445 | case BINOP_GTR: | |
2446 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
df407dfe | 2447 | arg2 = evaluate_subexp (value_type (arg1), exp, pos, noside); |
c906108c SS |
2448 | if (noside == EVAL_SKIP) |
2449 | goto nosideret; | |
2450 | if (binop_user_defined_p (op, arg1, arg2)) | |
2451 | { | |
2452 | return value_x_binop (arg1, arg2, op, OP_NULL, noside); | |
2453 | } | |
2454 | else | |
2455 | { | |
f44316fa | 2456 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); |
c906108c | 2457 | tem = value_less (arg2, arg1); |
fbb06eb1 UW |
2458 | type = language_bool_type (exp->language_defn, exp->gdbarch); |
2459 | return value_from_longest (type, (LONGEST) tem); | |
c906108c SS |
2460 | } |
2461 | ||
2462 | case BINOP_GEQ: | |
2463 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
df407dfe | 2464 | arg2 = evaluate_subexp (value_type (arg1), exp, pos, noside); |
c906108c SS |
2465 | if (noside == EVAL_SKIP) |
2466 | goto nosideret; | |
2467 | if (binop_user_defined_p (op, arg1, arg2)) | |
2468 | { | |
2469 | return value_x_binop (arg1, arg2, op, OP_NULL, noside); | |
2470 | } | |
2471 | else | |
2472 | { | |
f44316fa | 2473 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); |
c906108c | 2474 | tem = value_less (arg2, arg1) || value_equal (arg1, arg2); |
fbb06eb1 UW |
2475 | type = language_bool_type (exp->language_defn, exp->gdbarch); |
2476 | return value_from_longest (type, (LONGEST) tem); | |
c906108c SS |
2477 | } |
2478 | ||
2479 | case BINOP_LEQ: | |
2480 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
df407dfe | 2481 | arg2 = evaluate_subexp (value_type (arg1), exp, pos, noside); |
c906108c SS |
2482 | if (noside == EVAL_SKIP) |
2483 | goto nosideret; | |
2484 | if (binop_user_defined_p (op, arg1, arg2)) | |
2485 | { | |
2486 | return value_x_binop (arg1, arg2, op, OP_NULL, noside); | |
2487 | } | |
c5aa993b | 2488 | else |
c906108c | 2489 | { |
f44316fa | 2490 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); |
c906108c | 2491 | tem = value_less (arg1, arg2) || value_equal (arg1, arg2); |
fbb06eb1 UW |
2492 | type = language_bool_type (exp->language_defn, exp->gdbarch); |
2493 | return value_from_longest (type, (LONGEST) tem); | |
c906108c SS |
2494 | } |
2495 | ||
2496 | case BINOP_REPEAT: | |
2497 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
2498 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
2499 | if (noside == EVAL_SKIP) | |
2500 | goto nosideret; | |
df407dfe | 2501 | type = check_typedef (value_type (arg2)); |
c906108c | 2502 | if (TYPE_CODE (type) != TYPE_CODE_INT) |
8a3fe4f8 | 2503 | error (_("Non-integral right operand for \"@\" operator.")); |
c906108c SS |
2504 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
2505 | { | |
df407dfe | 2506 | return allocate_repeat_value (value_type (arg1), |
c5aa993b | 2507 | longest_to_int (value_as_long (arg2))); |
c906108c SS |
2508 | } |
2509 | else | |
2510 | return value_repeat (arg1, longest_to_int (value_as_long (arg2))); | |
2511 | ||
2512 | case BINOP_COMMA: | |
2513 | evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
2514 | return evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
2515 | ||
36e9969c NS |
2516 | case UNOP_PLUS: |
2517 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
2518 | if (noside == EVAL_SKIP) | |
2519 | goto nosideret; | |
2520 | if (unop_user_defined_p (op, arg1)) | |
2521 | return value_x_unop (arg1, op, noside); | |
2522 | else | |
f44316fa UW |
2523 | { |
2524 | unop_promote (exp->language_defn, exp->gdbarch, &arg1); | |
2525 | return value_pos (arg1); | |
2526 | } | |
36e9969c | 2527 | |
c906108c SS |
2528 | case UNOP_NEG: |
2529 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
2530 | if (noside == EVAL_SKIP) | |
2531 | goto nosideret; | |
2532 | if (unop_user_defined_p (op, arg1)) | |
2533 | return value_x_unop (arg1, op, noside); | |
2534 | else | |
f44316fa UW |
2535 | { |
2536 | unop_promote (exp->language_defn, exp->gdbarch, &arg1); | |
2537 | return value_neg (arg1); | |
2538 | } | |
c906108c SS |
2539 | |
2540 | case UNOP_COMPLEMENT: | |
2541 | /* C++: check for and handle destructor names. */ | |
2542 | op = exp->elts[*pos].opcode; | |
2543 | ||
2544 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
2545 | if (noside == EVAL_SKIP) | |
2546 | goto nosideret; | |
2547 | if (unop_user_defined_p (UNOP_COMPLEMENT, arg1)) | |
2548 | return value_x_unop (arg1, UNOP_COMPLEMENT, noside); | |
2549 | else | |
f44316fa UW |
2550 | { |
2551 | unop_promote (exp->language_defn, exp->gdbarch, &arg1); | |
2552 | return value_complement (arg1); | |
2553 | } | |
c906108c SS |
2554 | |
2555 | case UNOP_LOGICAL_NOT: | |
2556 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
2557 | if (noside == EVAL_SKIP) | |
2558 | goto nosideret; | |
2559 | if (unop_user_defined_p (op, arg1)) | |
2560 | return value_x_unop (arg1, op, noside); | |
2561 | else | |
fbb06eb1 UW |
2562 | { |
2563 | type = language_bool_type (exp->language_defn, exp->gdbarch); | |
2564 | return value_from_longest (type, (LONGEST) value_logical_not (arg1)); | |
2565 | } | |
c906108c SS |
2566 | |
2567 | case UNOP_IND: | |
2568 | if (expect_type && TYPE_CODE (expect_type) == TYPE_CODE_PTR) | |
c5aa993b | 2569 | expect_type = TYPE_TARGET_TYPE (check_typedef (expect_type)); |
c906108c | 2570 | arg1 = evaluate_subexp (expect_type, exp, pos, noside); |
0d5de010 DJ |
2571 | type = check_typedef (value_type (arg1)); |
2572 | if (TYPE_CODE (type) == TYPE_CODE_METHODPTR | |
2573 | || TYPE_CODE (type) == TYPE_CODE_MEMBERPTR) | |
8a3fe4f8 | 2574 | error (_("Attempt to dereference pointer to member without an object")); |
c906108c SS |
2575 | if (noside == EVAL_SKIP) |
2576 | goto nosideret; | |
2577 | if (unop_user_defined_p (op, arg1)) | |
2578 | return value_x_unop (arg1, op, noside); | |
2579 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
2580 | { | |
df407dfe | 2581 | type = check_typedef (value_type (arg1)); |
c906108c SS |
2582 | if (TYPE_CODE (type) == TYPE_CODE_PTR |
2583 | || TYPE_CODE (type) == TYPE_CODE_REF | |
c5aa993b | 2584 | /* In C you can dereference an array to get the 1st elt. */ |
c906108c | 2585 | || TYPE_CODE (type) == TYPE_CODE_ARRAY |
c5aa993b | 2586 | ) |
c906108c SS |
2587 | return value_zero (TYPE_TARGET_TYPE (type), |
2588 | lval_memory); | |
2589 | else if (TYPE_CODE (type) == TYPE_CODE_INT) | |
2590 | /* GDB allows dereferencing an int. */ | |
22fe0fbb UW |
2591 | return value_zero (builtin_type (exp->gdbarch)->builtin_int, |
2592 | lval_memory); | |
c906108c | 2593 | else |
8a3fe4f8 | 2594 | error (_("Attempt to take contents of a non-pointer value.")); |
c906108c | 2595 | } |
22fe0fbb UW |
2596 | |
2597 | /* Allow * on an integer so we can cast it to whatever we want. | |
2598 | This returns an int, which seems like the most C-like thing to | |
2599 | do. "long long" variables are rare enough that | |
2600 | BUILTIN_TYPE_LONGEST would seem to be a mistake. */ | |
2601 | if (TYPE_CODE (type) == TYPE_CODE_INT) | |
2602 | return value_at_lazy (builtin_type (exp->gdbarch)->builtin_int, | |
2603 | (CORE_ADDR) value_as_address (arg1)); | |
c906108c SS |
2604 | return value_ind (arg1); |
2605 | ||
2606 | case UNOP_ADDR: | |
2607 | /* C++: check for and handle pointer to members. */ | |
c5aa993b | 2608 | |
c906108c SS |
2609 | op = exp->elts[*pos].opcode; |
2610 | ||
2611 | if (noside == EVAL_SKIP) | |
2612 | { | |
0d5de010 | 2613 | evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP); |
c906108c SS |
2614 | goto nosideret; |
2615 | } | |
c5aa993b JM |
2616 | else |
2617 | { | |
61051030 | 2618 | struct value *retvalp = evaluate_subexp_for_address (exp, pos, noside); |
d7f9d729 | 2619 | |
c5aa993b JM |
2620 | return retvalp; |
2621 | } | |
2622 | ||
c906108c SS |
2623 | case UNOP_SIZEOF: |
2624 | if (noside == EVAL_SKIP) | |
2625 | { | |
2626 | evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP); | |
2627 | goto nosideret; | |
2628 | } | |
2629 | return evaluate_subexp_for_sizeof (exp, pos); | |
2630 | ||
2631 | case UNOP_CAST: | |
2632 | (*pos) += 2; | |
2633 | type = exp->elts[pc + 1].type; | |
2634 | arg1 = evaluate_subexp (type, exp, pos, noside); | |
2635 | if (noside == EVAL_SKIP) | |
2636 | goto nosideret; | |
df407dfe | 2637 | if (type != value_type (arg1)) |
c906108c SS |
2638 | arg1 = value_cast (type, arg1); |
2639 | return arg1; | |
2640 | ||
4e8f195d TT |
2641 | case UNOP_DYNAMIC_CAST: |
2642 | (*pos) += 2; | |
2643 | type = exp->elts[pc + 1].type; | |
2644 | arg1 = evaluate_subexp (type, exp, pos, noside); | |
2645 | if (noside == EVAL_SKIP) | |
2646 | goto nosideret; | |
2647 | return value_dynamic_cast (type, arg1); | |
2648 | ||
2649 | case UNOP_REINTERPRET_CAST: | |
2650 | (*pos) += 2; | |
2651 | type = exp->elts[pc + 1].type; | |
2652 | arg1 = evaluate_subexp (type, exp, pos, noside); | |
2653 | if (noside == EVAL_SKIP) | |
2654 | goto nosideret; | |
2655 | return value_reinterpret_cast (type, arg1); | |
2656 | ||
c906108c SS |
2657 | case UNOP_MEMVAL: |
2658 | (*pos) += 2; | |
2659 | arg1 = evaluate_subexp (expect_type, exp, pos, noside); | |
2660 | if (noside == EVAL_SKIP) | |
2661 | goto nosideret; | |
2662 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
2663 | return value_zero (exp->elts[pc + 1].type, lval_memory); | |
2664 | else | |
2665 | return value_at_lazy (exp->elts[pc + 1].type, | |
00a4c844 | 2666 | value_as_address (arg1)); |
c906108c | 2667 | |
9e35dae4 DJ |
2668 | case UNOP_MEMVAL_TLS: |
2669 | (*pos) += 3; | |
2670 | arg1 = evaluate_subexp (expect_type, exp, pos, noside); | |
2671 | if (noside == EVAL_SKIP) | |
2672 | goto nosideret; | |
2673 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
2674 | return value_zero (exp->elts[pc + 2].type, lval_memory); | |
2675 | else | |
2676 | { | |
2677 | CORE_ADDR tls_addr; | |
d7f9d729 | 2678 | |
9e35dae4 DJ |
2679 | tls_addr = target_translate_tls_address (exp->elts[pc + 1].objfile, |
2680 | value_as_address (arg1)); | |
2681 | return value_at_lazy (exp->elts[pc + 2].type, tls_addr); | |
2682 | } | |
2683 | ||
c906108c SS |
2684 | case UNOP_PREINCREMENT: |
2685 | arg1 = evaluate_subexp (expect_type, exp, pos, noside); | |
2686 | if (noside == EVAL_SKIP || noside == EVAL_AVOID_SIDE_EFFECTS) | |
2687 | return arg1; | |
2688 | else if (unop_user_defined_p (op, arg1)) | |
2689 | { | |
2690 | return value_x_unop (arg1, op, noside); | |
2691 | } | |
2692 | else | |
2693 | { | |
cc73bb8c | 2694 | if (ptrmath_type_p (exp->language_defn, value_type (arg1))) |
2497b498 | 2695 | arg2 = value_ptradd (arg1, 1); |
89eef114 | 2696 | else |
f44316fa UW |
2697 | { |
2698 | struct value *tmp = arg1; | |
d7f9d729 | 2699 | |
2497b498 | 2700 | arg2 = value_one (value_type (arg1), not_lval); |
f44316fa UW |
2701 | binop_promote (exp->language_defn, exp->gdbarch, &tmp, &arg2); |
2702 | arg2 = value_binop (tmp, arg2, BINOP_ADD); | |
2703 | } | |
89eef114 | 2704 | |
c906108c SS |
2705 | return value_assign (arg1, arg2); |
2706 | } | |
2707 | ||
2708 | case UNOP_PREDECREMENT: | |
2709 | arg1 = evaluate_subexp (expect_type, exp, pos, noside); | |
2710 | if (noside == EVAL_SKIP || noside == EVAL_AVOID_SIDE_EFFECTS) | |
2711 | return arg1; | |
2712 | else if (unop_user_defined_p (op, arg1)) | |
2713 | { | |
2714 | return value_x_unop (arg1, op, noside); | |
2715 | } | |
2716 | else | |
2717 | { | |
cc73bb8c | 2718 | if (ptrmath_type_p (exp->language_defn, value_type (arg1))) |
2497b498 | 2719 | arg2 = value_ptradd (arg1, -1); |
89eef114 | 2720 | else |
f44316fa UW |
2721 | { |
2722 | struct value *tmp = arg1; | |
d7f9d729 | 2723 | |
2497b498 | 2724 | arg2 = value_one (value_type (arg1), not_lval); |
f44316fa UW |
2725 | binop_promote (exp->language_defn, exp->gdbarch, &tmp, &arg2); |
2726 | arg2 = value_binop (tmp, arg2, BINOP_SUB); | |
2727 | } | |
89eef114 | 2728 | |
c906108c SS |
2729 | return value_assign (arg1, arg2); |
2730 | } | |
2731 | ||
2732 | case UNOP_POSTINCREMENT: | |
2733 | arg1 = evaluate_subexp (expect_type, exp, pos, noside); | |
2734 | if (noside == EVAL_SKIP || noside == EVAL_AVOID_SIDE_EFFECTS) | |
2735 | return arg1; | |
2736 | else if (unop_user_defined_p (op, arg1)) | |
2737 | { | |
2738 | return value_x_unop (arg1, op, noside); | |
2739 | } | |
2740 | else | |
2741 | { | |
cc73bb8c | 2742 | if (ptrmath_type_p (exp->language_defn, value_type (arg1))) |
2497b498 | 2743 | arg2 = value_ptradd (arg1, 1); |
89eef114 | 2744 | else |
f44316fa UW |
2745 | { |
2746 | struct value *tmp = arg1; | |
d7f9d729 | 2747 | |
2497b498 | 2748 | arg2 = value_one (value_type (arg1), not_lval); |
f44316fa UW |
2749 | binop_promote (exp->language_defn, exp->gdbarch, &tmp, &arg2); |
2750 | arg2 = value_binop (tmp, arg2, BINOP_ADD); | |
2751 | } | |
89eef114 | 2752 | |
c906108c SS |
2753 | value_assign (arg1, arg2); |
2754 | return arg1; | |
2755 | } | |
2756 | ||
2757 | case UNOP_POSTDECREMENT: | |
2758 | arg1 = evaluate_subexp (expect_type, exp, pos, noside); | |
2759 | if (noside == EVAL_SKIP || noside == EVAL_AVOID_SIDE_EFFECTS) | |
2760 | return arg1; | |
2761 | else if (unop_user_defined_p (op, arg1)) | |
2762 | { | |
2763 | return value_x_unop (arg1, op, noside); | |
2764 | } | |
2765 | else | |
2766 | { | |
cc73bb8c | 2767 | if (ptrmath_type_p (exp->language_defn, value_type (arg1))) |
2497b498 | 2768 | arg2 = value_ptradd (arg1, -1); |
89eef114 | 2769 | else |
f44316fa UW |
2770 | { |
2771 | struct value *tmp = arg1; | |
d7f9d729 | 2772 | |
2497b498 | 2773 | arg2 = value_one (value_type (arg1), not_lval); |
f44316fa UW |
2774 | binop_promote (exp->language_defn, exp->gdbarch, &tmp, &arg2); |
2775 | arg2 = value_binop (tmp, arg2, BINOP_SUB); | |
2776 | } | |
89eef114 | 2777 | |
c906108c SS |
2778 | value_assign (arg1, arg2); |
2779 | return arg1; | |
2780 | } | |
c5aa993b | 2781 | |
c906108c SS |
2782 | case OP_THIS: |
2783 | (*pos) += 1; | |
2784 | return value_of_this (1); | |
2785 | ||
a9fa03de AF |
2786 | case OP_OBJC_SELF: |
2787 | (*pos) += 1; | |
2788 | return value_of_local ("self", 1); | |
2789 | ||
c906108c | 2790 | case OP_TYPE: |
d843c49c FF |
2791 | /* The value is not supposed to be used. This is here to make it |
2792 | easier to accommodate expressions that contain types. */ | |
2793 | (*pos) += 2; | |
2794 | if (noside == EVAL_SKIP) | |
2795 | goto nosideret; | |
2796 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
cb249c71 TT |
2797 | { |
2798 | struct type *type = exp->elts[pc + 1].type; | |
d7f9d729 | 2799 | |
cb249c71 TT |
2800 | /* If this is a typedef, then find its immediate target. We |
2801 | use check_typedef to resolve stubs, but we ignore its | |
2802 | result because we do not want to dig past all | |
2803 | typedefs. */ | |
2804 | check_typedef (type); | |
2805 | if (TYPE_CODE (type) == TYPE_CODE_TYPEDEF) | |
2806 | type = TYPE_TARGET_TYPE (type); | |
2807 | return allocate_value (type); | |
2808 | } | |
d843c49c FF |
2809 | else |
2810 | error (_("Attempt to use a type name as an expression")); | |
c906108c SS |
2811 | |
2812 | default: | |
2813 | /* Removing this case and compiling with gcc -Wall reveals that | |
c5aa993b | 2814 | a lot of cases are hitting this case. Some of these should |
2df3850c JM |
2815 | probably be removed from expression.h; others are legitimate |
2816 | expressions which are (apparently) not fully implemented. | |
c906108c | 2817 | |
c5aa993b JM |
2818 | If there are any cases landing here which mean a user error, |
2819 | then they should be separate cases, with more descriptive | |
2820 | error messages. */ | |
c906108c | 2821 | |
8a3fe4f8 AC |
2822 | error (_("\ |
2823 | GDB does not (yet) know how to evaluate that kind of expression")); | |
c906108c SS |
2824 | } |
2825 | ||
c5aa993b | 2826 | nosideret: |
22601c15 | 2827 | return value_from_longest (builtin_type (exp->gdbarch)->builtin_int, 1); |
c906108c SS |
2828 | } |
2829 | \f | |
2830 | /* Evaluate a subexpression of EXP, at index *POS, | |
2831 | and return the address of that subexpression. | |
2832 | Advance *POS over the subexpression. | |
2833 | If the subexpression isn't an lvalue, get an error. | |
2834 | NOSIDE may be EVAL_AVOID_SIDE_EFFECTS; | |
2835 | then only the type of the result need be correct. */ | |
2836 | ||
61051030 | 2837 | static struct value * |
aa1ee363 | 2838 | evaluate_subexp_for_address (struct expression *exp, int *pos, |
fba45db2 | 2839 | enum noside noside) |
c906108c SS |
2840 | { |
2841 | enum exp_opcode op; | |
52f0bd74 | 2842 | int pc; |
c906108c | 2843 | struct symbol *var; |
ab5c9f60 | 2844 | struct value *x; |
0d5de010 | 2845 | int tem; |
c906108c SS |
2846 | |
2847 | pc = (*pos); | |
2848 | op = exp->elts[pc].opcode; | |
2849 | ||
2850 | switch (op) | |
2851 | { | |
2852 | case UNOP_IND: | |
2853 | (*pos)++; | |
ab5c9f60 DJ |
2854 | x = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
2855 | ||
2856 | /* We can't optimize out "&*" if there's a user-defined operator*. */ | |
2857 | if (unop_user_defined_p (op, x)) | |
2858 | { | |
2859 | x = value_x_unop (x, op, noside); | |
0d5de010 | 2860 | goto default_case_after_eval; |
ab5c9f60 DJ |
2861 | } |
2862 | ||
708ead4e | 2863 | return coerce_array (x); |
c906108c SS |
2864 | |
2865 | case UNOP_MEMVAL: | |
2866 | (*pos) += 3; | |
2867 | return value_cast (lookup_pointer_type (exp->elts[pc + 1].type), | |
2868 | evaluate_subexp (NULL_TYPE, exp, pos, noside)); | |
2869 | ||
2870 | case OP_VAR_VALUE: | |
2871 | var = exp->elts[pc + 2].symbol; | |
2872 | ||
2873 | /* C++: The "address" of a reference should yield the address | |
2874 | * of the object pointed to. Let value_addr() deal with it. */ | |
2875 | if (TYPE_CODE (SYMBOL_TYPE (var)) == TYPE_CODE_REF) | |
c5aa993b | 2876 | goto default_case; |
c906108c SS |
2877 | |
2878 | (*pos) += 4; | |
2879 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
2880 | { | |
2881 | struct type *type = | |
d7f9d729 | 2882 | lookup_pointer_type (SYMBOL_TYPE (var)); |
c906108c SS |
2883 | enum address_class sym_class = SYMBOL_CLASS (var); |
2884 | ||
2885 | if (sym_class == LOC_CONST | |
2886 | || sym_class == LOC_CONST_BYTES | |
2a2d4dc3 | 2887 | || sym_class == LOC_REGISTER) |
8a3fe4f8 | 2888 | error (_("Attempt to take address of register or constant.")); |
c906108c | 2889 | |
c5aa993b JM |
2890 | return |
2891 | value_zero (type, not_lval); | |
c906108c | 2892 | } |
ceef53c1 | 2893 | else |
61212c0f | 2894 | return address_of_variable (var, exp->elts[pc + 1].block); |
c906108c | 2895 | |
0d5de010 DJ |
2896 | case OP_SCOPE: |
2897 | tem = longest_to_int (exp->elts[pc + 2].longconst); | |
2898 | (*pos) += 5 + BYTES_TO_EXP_ELEM (tem + 1); | |
2899 | x = value_aggregate_elt (exp->elts[pc + 1].type, | |
2900 | &exp->elts[pc + 3].string, | |
072bba3b | 2901 | NULL, 1, noside); |
0d5de010 DJ |
2902 | if (x == NULL) |
2903 | error (_("There is no field named %s"), &exp->elts[pc + 3].string); | |
2904 | return x; | |
2905 | ||
c906108c SS |
2906 | default: |
2907 | default_case: | |
ab5c9f60 | 2908 | x = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
0d5de010 | 2909 | default_case_after_eval: |
c906108c SS |
2910 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
2911 | { | |
0d5de010 DJ |
2912 | struct type *type = check_typedef (value_type (x)); |
2913 | ||
63092375 | 2914 | if (VALUE_LVAL (x) == lval_memory || value_must_coerce_to_target (x)) |
df407dfe | 2915 | return value_zero (lookup_pointer_type (value_type (x)), |
c906108c | 2916 | not_lval); |
0d5de010 DJ |
2917 | else if (TYPE_CODE (type) == TYPE_CODE_REF) |
2918 | return value_zero (lookup_pointer_type (TYPE_TARGET_TYPE (type)), | |
2919 | not_lval); | |
c906108c | 2920 | else |
63092375 | 2921 | error (_("Attempt to take address of value not located in memory.")); |
c906108c | 2922 | } |
ab5c9f60 | 2923 | return value_addr (x); |
c906108c SS |
2924 | } |
2925 | } | |
2926 | ||
2927 | /* Evaluate like `evaluate_subexp' except coercing arrays to pointers. | |
2928 | When used in contexts where arrays will be coerced anyway, this is | |
2929 | equivalent to `evaluate_subexp' but much faster because it avoids | |
2930 | actually fetching array contents (perhaps obsolete now that we have | |
d69fe07e | 2931 | value_lazy()). |
c906108c SS |
2932 | |
2933 | Note that we currently only do the coercion for C expressions, where | |
2934 | arrays are zero based and the coercion is correct. For other languages, | |
2935 | with nonzero based arrays, coercion loses. Use CAST_IS_CONVERSION | |
2936 | to decide if coercion is appropriate. | |
2937 | ||
c5aa993b | 2938 | */ |
c906108c | 2939 | |
61051030 | 2940 | struct value * |
aa1ee363 AC |
2941 | evaluate_subexp_with_coercion (struct expression *exp, |
2942 | int *pos, enum noside noside) | |
c906108c | 2943 | { |
52f0bd74 AC |
2944 | enum exp_opcode op; |
2945 | int pc; | |
61051030 | 2946 | struct value *val; |
c906108c | 2947 | struct symbol *var; |
61212c0f | 2948 | struct type *type; |
c906108c SS |
2949 | |
2950 | pc = (*pos); | |
2951 | op = exp->elts[pc].opcode; | |
2952 | ||
2953 | switch (op) | |
2954 | { | |
2955 | case OP_VAR_VALUE: | |
2956 | var = exp->elts[pc + 2].symbol; | |
61212c0f UW |
2957 | type = check_typedef (SYMBOL_TYPE (var)); |
2958 | if (TYPE_CODE (type) == TYPE_CODE_ARRAY | |
7346b668 | 2959 | && !TYPE_VECTOR (type) |
cc73bb8c | 2960 | && CAST_IS_CONVERSION (exp->language_defn)) |
c906108c SS |
2961 | { |
2962 | (*pos) += 4; | |
61212c0f UW |
2963 | val = address_of_variable (var, exp->elts[pc + 1].block); |
2964 | return value_cast (lookup_pointer_type (TYPE_TARGET_TYPE (type)), | |
c906108c SS |
2965 | val); |
2966 | } | |
2967 | /* FALLTHROUGH */ | |
2968 | ||
2969 | default: | |
2970 | return evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
2971 | } | |
2972 | } | |
2973 | ||
2974 | /* Evaluate a subexpression of EXP, at index *POS, | |
2975 | and return a value for the size of that subexpression. | |
2976 | Advance *POS over the subexpression. */ | |
2977 | ||
61051030 | 2978 | static struct value * |
aa1ee363 | 2979 | evaluate_subexp_for_sizeof (struct expression *exp, int *pos) |
c906108c | 2980 | { |
98b90dd8 UW |
2981 | /* FIXME: This should be size_t. */ |
2982 | struct type *size_type = builtin_type (exp->gdbarch)->builtin_int; | |
c906108c | 2983 | enum exp_opcode op; |
52f0bd74 | 2984 | int pc; |
c906108c | 2985 | struct type *type; |
61051030 | 2986 | struct value *val; |
c906108c SS |
2987 | |
2988 | pc = (*pos); | |
2989 | op = exp->elts[pc].opcode; | |
2990 | ||
2991 | switch (op) | |
2992 | { | |
2993 | /* This case is handled specially | |
c5aa993b JM |
2994 | so that we avoid creating a value for the result type. |
2995 | If the result type is very big, it's desirable not to | |
2996 | create a value unnecessarily. */ | |
c906108c SS |
2997 | case UNOP_IND: |
2998 | (*pos)++; | |
2999 | val = evaluate_subexp (NULL_TYPE, exp, pos, EVAL_AVOID_SIDE_EFFECTS); | |
df407dfe | 3000 | type = check_typedef (value_type (val)); |
c906108c SS |
3001 | if (TYPE_CODE (type) != TYPE_CODE_PTR |
3002 | && TYPE_CODE (type) != TYPE_CODE_REF | |
3003 | && TYPE_CODE (type) != TYPE_CODE_ARRAY) | |
8a3fe4f8 | 3004 | error (_("Attempt to take contents of a non-pointer value.")); |
c906108c | 3005 | type = check_typedef (TYPE_TARGET_TYPE (type)); |
98b90dd8 | 3006 | return value_from_longest (size_type, (LONGEST) TYPE_LENGTH (type)); |
c906108c SS |
3007 | |
3008 | case UNOP_MEMVAL: | |
3009 | (*pos) += 3; | |
3010 | type = check_typedef (exp->elts[pc + 1].type); | |
98b90dd8 | 3011 | return value_from_longest (size_type, (LONGEST) TYPE_LENGTH (type)); |
c906108c SS |
3012 | |
3013 | case OP_VAR_VALUE: | |
3014 | (*pos) += 4; | |
3015 | type = check_typedef (SYMBOL_TYPE (exp->elts[pc + 2].symbol)); | |
3016 | return | |
98b90dd8 | 3017 | value_from_longest (size_type, (LONGEST) TYPE_LENGTH (type)); |
c906108c SS |
3018 | |
3019 | default: | |
3020 | val = evaluate_subexp (NULL_TYPE, exp, pos, EVAL_AVOID_SIDE_EFFECTS); | |
98b90dd8 | 3021 | return value_from_longest (size_type, |
df407dfe | 3022 | (LONGEST) TYPE_LENGTH (value_type (val))); |
c906108c SS |
3023 | } |
3024 | } | |
3025 | ||
3026 | /* Parse a type expression in the string [P..P+LENGTH). */ | |
3027 | ||
3028 | struct type * | |
fba45db2 | 3029 | parse_and_eval_type (char *p, int length) |
c906108c | 3030 | { |
c5aa993b JM |
3031 | char *tmp = (char *) alloca (length + 4); |
3032 | struct expression *expr; | |
d7f9d729 | 3033 | |
c5aa993b JM |
3034 | tmp[0] = '('; |
3035 | memcpy (tmp + 1, p, length); | |
3036 | tmp[length + 1] = ')'; | |
3037 | tmp[length + 2] = '0'; | |
3038 | tmp[length + 3] = '\0'; | |
3039 | expr = parse_expression (tmp); | |
3040 | if (expr->elts[0].opcode != UNOP_CAST) | |
8a3fe4f8 | 3041 | error (_("Internal error in eval_type.")); |
c5aa993b | 3042 | return expr->elts[1].type; |
c906108c SS |
3043 | } |
3044 | ||
3045 | int | |
fba45db2 | 3046 | calc_f77_array_dims (struct type *array_type) |
c906108c SS |
3047 | { |
3048 | int ndimen = 1; | |
3049 | struct type *tmp_type; | |
3050 | ||
c5aa993b | 3051 | if ((TYPE_CODE (array_type) != TYPE_CODE_ARRAY)) |
8a3fe4f8 | 3052 | error (_("Can't get dimensions for a non-array type")); |
c5aa993b JM |
3053 | |
3054 | tmp_type = array_type; | |
c906108c SS |
3055 | |
3056 | while ((tmp_type = TYPE_TARGET_TYPE (tmp_type))) | |
3057 | { | |
3058 | if (TYPE_CODE (tmp_type) == TYPE_CODE_ARRAY) | |
3059 | ++ndimen; | |
3060 | } | |
c5aa993b | 3061 | return ndimen; |
c906108c | 3062 | } |