Commit | Line | Data |
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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: | |
f4b8a18d | 606 | case language_opencl: |
4066e646 UW |
607 | /* No promotion required. */ |
608 | break; | |
609 | ||
610 | default: | |
611 | /* For other languages the result type is unchanged from gdb | |
612 | version 6.7 for backward compatibility. | |
613 | If either arg was long double, make sure that value is also long | |
614 | double. Otherwise use double. */ | |
615 | if (TYPE_LENGTH (type1) * 8 > gdbarch_double_bit (gdbarch) | |
616 | || TYPE_LENGTH (type2) * 8 > gdbarch_double_bit (gdbarch)) | |
617 | promoted_type = builtin_type (gdbarch)->builtin_long_double; | |
618 | else | |
619 | promoted_type = builtin_type (gdbarch)->builtin_double; | |
620 | break; | |
621 | } | |
622 | } | |
623 | else if (TYPE_CODE (type1) == TYPE_CODE_BOOL | |
624 | && TYPE_CODE (type2) == TYPE_CODE_BOOL) | |
625 | { | |
626 | /* No promotion required. */ | |
627 | } | |
628 | else | |
629 | /* Integral operations here. */ | |
630 | /* FIXME: Also mixed integral/booleans, with result an integer. */ | |
631 | { | |
632 | const struct builtin_type *builtin = builtin_type (gdbarch); | |
633 | unsigned int promoted_len1 = TYPE_LENGTH (type1); | |
634 | unsigned int promoted_len2 = TYPE_LENGTH (type2); | |
635 | int is_unsigned1 = TYPE_UNSIGNED (type1); | |
636 | int is_unsigned2 = TYPE_UNSIGNED (type2); | |
637 | unsigned int result_len; | |
638 | int unsigned_operation; | |
639 | ||
640 | /* Determine type length and signedness after promotion for | |
641 | both operands. */ | |
642 | if (promoted_len1 < TYPE_LENGTH (builtin->builtin_int)) | |
643 | { | |
644 | is_unsigned1 = 0; | |
645 | promoted_len1 = TYPE_LENGTH (builtin->builtin_int); | |
646 | } | |
647 | if (promoted_len2 < TYPE_LENGTH (builtin->builtin_int)) | |
648 | { | |
649 | is_unsigned2 = 0; | |
650 | promoted_len2 = TYPE_LENGTH (builtin->builtin_int); | |
651 | } | |
652 | ||
653 | if (promoted_len1 > promoted_len2) | |
654 | { | |
655 | unsigned_operation = is_unsigned1; | |
656 | result_len = promoted_len1; | |
657 | } | |
658 | else if (promoted_len2 > promoted_len1) | |
659 | { | |
660 | unsigned_operation = is_unsigned2; | |
661 | result_len = promoted_len2; | |
662 | } | |
663 | else | |
664 | { | |
665 | unsigned_operation = is_unsigned1 || is_unsigned2; | |
666 | result_len = promoted_len1; | |
667 | } | |
668 | ||
669 | switch (language->la_language) | |
670 | { | |
671 | case language_c: | |
672 | case language_cplus: | |
673 | case language_asm: | |
674 | case language_objc: | |
675 | if (result_len <= TYPE_LENGTH (builtin->builtin_int)) | |
676 | { | |
677 | promoted_type = (unsigned_operation | |
678 | ? builtin->builtin_unsigned_int | |
679 | : builtin->builtin_int); | |
680 | } | |
681 | else if (result_len <= TYPE_LENGTH (builtin->builtin_long)) | |
682 | { | |
683 | promoted_type = (unsigned_operation | |
684 | ? builtin->builtin_unsigned_long | |
685 | : builtin->builtin_long); | |
686 | } | |
687 | else | |
688 | { | |
689 | promoted_type = (unsigned_operation | |
690 | ? builtin->builtin_unsigned_long_long | |
691 | : builtin->builtin_long_long); | |
692 | } | |
693 | break; | |
f4b8a18d KW |
694 | case language_opencl: |
695 | if (result_len <= TYPE_LENGTH (lookup_signed_typename | |
696 | (language, gdbarch, "int"))) | |
697 | { | |
698 | promoted_type = | |
699 | (unsigned_operation | |
700 | ? lookup_unsigned_typename (language, gdbarch, "int") | |
701 | : lookup_signed_typename (language, gdbarch, "int")); | |
702 | } | |
703 | else if (result_len <= TYPE_LENGTH (lookup_signed_typename | |
704 | (language, gdbarch, "long"))) | |
705 | { | |
706 | promoted_type = | |
707 | (unsigned_operation | |
708 | ? lookup_unsigned_typename (language, gdbarch, "long") | |
709 | : lookup_signed_typename (language, gdbarch,"long")); | |
710 | } | |
711 | break; | |
4066e646 UW |
712 | default: |
713 | /* For other languages the result type is unchanged from gdb | |
714 | version 6.7 for backward compatibility. | |
715 | If either arg was long long, make sure that value is also long | |
716 | long. Otherwise use long. */ | |
717 | if (unsigned_operation) | |
718 | { | |
719 | if (result_len > gdbarch_long_bit (gdbarch) / HOST_CHAR_BIT) | |
720 | promoted_type = builtin->builtin_unsigned_long_long; | |
721 | else | |
722 | promoted_type = builtin->builtin_unsigned_long; | |
723 | } | |
724 | else | |
725 | { | |
726 | if (result_len > gdbarch_long_bit (gdbarch) / HOST_CHAR_BIT) | |
727 | promoted_type = builtin->builtin_long_long; | |
728 | else | |
729 | promoted_type = builtin->builtin_long; | |
730 | } | |
731 | break; | |
732 | } | |
733 | } | |
734 | ||
735 | if (promoted_type) | |
736 | { | |
737 | /* Promote both operands to common type. */ | |
738 | *arg1 = value_cast (promoted_type, *arg1); | |
739 | *arg2 = value_cast (promoted_type, *arg2); | |
740 | } | |
741 | } | |
742 | ||
89eef114 | 743 | static int |
cc73bb8c | 744 | ptrmath_type_p (const struct language_defn *lang, struct type *type) |
89eef114 UW |
745 | { |
746 | type = check_typedef (type); | |
747 | if (TYPE_CODE (type) == TYPE_CODE_REF) | |
748 | type = TYPE_TARGET_TYPE (type); | |
749 | ||
750 | switch (TYPE_CODE (type)) | |
751 | { | |
752 | case TYPE_CODE_PTR: | |
753 | case TYPE_CODE_FUNC: | |
754 | return 1; | |
755 | ||
756 | case TYPE_CODE_ARRAY: | |
7346b668 | 757 | return TYPE_VECTOR (type) ? 0 : lang->c_style_arrays; |
89eef114 UW |
758 | |
759 | default: | |
760 | return 0; | |
761 | } | |
762 | } | |
763 | ||
072bba3b KS |
764 | /* Constructs a fake method with the given parameter types. |
765 | This function is used by the parser to construct an "expected" | |
766 | type for method overload resolution. */ | |
767 | ||
768 | static struct type * | |
769 | make_params (int num_types, struct type **param_types) | |
770 | { | |
771 | struct type *type = XZALLOC (struct type); | |
772 | TYPE_MAIN_TYPE (type) = XZALLOC (struct main_type); | |
773 | TYPE_LENGTH (type) = 1; | |
774 | TYPE_CODE (type) = TYPE_CODE_METHOD; | |
775 | TYPE_VPTR_FIELDNO (type) = -1; | |
776 | TYPE_CHAIN (type) = type; | |
777 | TYPE_NFIELDS (type) = num_types; | |
778 | TYPE_FIELDS (type) = (struct field *) | |
779 | TYPE_ZALLOC (type, sizeof (struct field) * num_types); | |
780 | ||
781 | while (num_types-- > 0) | |
782 | TYPE_FIELD_TYPE (type, num_types) = param_types[num_types]; | |
783 | ||
784 | return type; | |
785 | } | |
786 | ||
61051030 | 787 | struct value * |
fba45db2 | 788 | evaluate_subexp_standard (struct type *expect_type, |
aa1ee363 | 789 | struct expression *exp, int *pos, |
fba45db2 | 790 | enum noside noside) |
c906108c SS |
791 | { |
792 | enum exp_opcode op; | |
793 | int tem, tem2, tem3; | |
52f0bd74 | 794 | int pc, pc2 = 0, oldpos; |
61051030 AC |
795 | struct value *arg1 = NULL; |
796 | struct value *arg2 = NULL; | |
797 | struct value *arg3; | |
c906108c SS |
798 | struct type *type; |
799 | int nargs; | |
61051030 | 800 | struct value **argvec; |
8f78b329 | 801 | int upper, lower; |
c906108c SS |
802 | int code; |
803 | int ix; | |
804 | long mem_offset; | |
c5aa993b | 805 | struct type **arg_types; |
c906108c | 806 | int save_pos1; |
714f19d5 TT |
807 | struct symbol *function = NULL; |
808 | char *function_name = NULL; | |
c906108c | 809 | |
c906108c SS |
810 | pc = (*pos)++; |
811 | op = exp->elts[pc].opcode; | |
812 | ||
813 | switch (op) | |
814 | { | |
815 | case OP_SCOPE: | |
816 | tem = longest_to_int (exp->elts[pc + 2].longconst); | |
817 | (*pos) += 4 + BYTES_TO_EXP_ELEM (tem + 1); | |
0d5de010 DJ |
818 | if (noside == EVAL_SKIP) |
819 | goto nosideret; | |
79c2c32d DC |
820 | arg1 = value_aggregate_elt (exp->elts[pc + 1].type, |
821 | &exp->elts[pc + 3].string, | |
072bba3b | 822 | expect_type, 0, noside); |
c906108c | 823 | if (arg1 == NULL) |
8a3fe4f8 | 824 | error (_("There is no field named %s"), &exp->elts[pc + 3].string); |
c906108c SS |
825 | return arg1; |
826 | ||
827 | case OP_LONG: | |
828 | (*pos) += 3; | |
829 | return value_from_longest (exp->elts[pc + 1].type, | |
830 | exp->elts[pc + 2].longconst); | |
831 | ||
832 | case OP_DOUBLE: | |
833 | (*pos) += 3; | |
834 | return value_from_double (exp->elts[pc + 1].type, | |
835 | exp->elts[pc + 2].doubleconst); | |
836 | ||
27bc4d80 TJB |
837 | case OP_DECFLOAT: |
838 | (*pos) += 3; | |
4ef30785 TJB |
839 | return value_from_decfloat (exp->elts[pc + 1].type, |
840 | exp->elts[pc + 2].decfloatconst); | |
27bc4d80 | 841 | |
7322dca9 | 842 | case OP_ADL_FUNC: |
c906108c SS |
843 | case OP_VAR_VALUE: |
844 | (*pos) += 3; | |
845 | if (noside == EVAL_SKIP) | |
846 | goto nosideret; | |
c906108c | 847 | |
070ad9f0 DB |
848 | /* JYG: We used to just return value_zero of the symbol type |
849 | if we're asked to avoid side effects. Otherwise we return | |
850 | value_of_variable (...). However I'm not sure if | |
851 | value_of_variable () has any side effect. | |
852 | We need a full value object returned here for whatis_exp () | |
853 | to call evaluate_type () and then pass the full value to | |
854 | value_rtti_target_type () if we are dealing with a pointer | |
855 | or reference to a base class and print object is on. */ | |
c906108c | 856 | |
5e572bb4 DJ |
857 | { |
858 | volatile struct gdb_exception except; | |
859 | struct value *ret = NULL; | |
860 | ||
861 | TRY_CATCH (except, RETURN_MASK_ERROR) | |
862 | { | |
863 | ret = value_of_variable (exp->elts[pc + 2].symbol, | |
864 | exp->elts[pc + 1].block); | |
865 | } | |
866 | ||
867 | if (except.reason < 0) | |
868 | { | |
869 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
870 | ret = value_zero (SYMBOL_TYPE (exp->elts[pc + 2].symbol), not_lval); | |
871 | else | |
872 | throw_exception (except); | |
873 | } | |
874 | ||
875 | return ret; | |
876 | } | |
c906108c SS |
877 | |
878 | case OP_LAST: | |
879 | (*pos) += 2; | |
880 | return | |
881 | access_value_history (longest_to_int (exp->elts[pc + 1].longconst)); | |
882 | ||
883 | case OP_REGISTER: | |
884 | { | |
67f3407f DJ |
885 | const char *name = &exp->elts[pc + 2].string; |
886 | int regno; | |
123dc839 | 887 | struct value *val; |
67f3407f DJ |
888 | |
889 | (*pos) += 3 + BYTES_TO_EXP_ELEM (exp->elts[pc + 1].longconst + 1); | |
d80b854b | 890 | regno = user_reg_map_name_to_regnum (exp->gdbarch, |
029a67e4 | 891 | name, strlen (name)); |
67f3407f DJ |
892 | if (regno == -1) |
893 | error (_("Register $%s not available."), name); | |
80f064a2 JB |
894 | |
895 | /* In EVAL_AVOID_SIDE_EFFECTS mode, we only need to return | |
896 | a value with the appropriate register type. Unfortunately, | |
897 | we don't have easy access to the type of user registers. | |
898 | So for these registers, we fetch the register value regardless | |
899 | of the evaluation mode. */ | |
900 | if (noside == EVAL_AVOID_SIDE_EFFECTS | |
d80b854b UW |
901 | && regno < gdbarch_num_regs (exp->gdbarch) |
902 | + gdbarch_num_pseudo_regs (exp->gdbarch)) | |
903 | val = value_zero (register_type (exp->gdbarch, regno), not_lval); | |
123dc839 DJ |
904 | else |
905 | val = value_of_register (regno, get_selected_frame (NULL)); | |
c906108c | 906 | if (val == NULL) |
67f3407f | 907 | error (_("Value of register %s not available."), name); |
c906108c SS |
908 | else |
909 | return val; | |
910 | } | |
911 | case OP_BOOL: | |
912 | (*pos) += 2; | |
fbb06eb1 UW |
913 | type = language_bool_type (exp->language_defn, exp->gdbarch); |
914 | return value_from_longest (type, exp->elts[pc + 1].longconst); | |
c906108c SS |
915 | |
916 | case OP_INTERNALVAR: | |
917 | (*pos) += 2; | |
78267919 UW |
918 | return value_of_internalvar (exp->gdbarch, |
919 | exp->elts[pc + 1].internalvar); | |
c906108c SS |
920 | |
921 | case OP_STRING: | |
922 | tem = longest_to_int (exp->elts[pc + 1].longconst); | |
923 | (*pos) += 3 + BYTES_TO_EXP_ELEM (tem + 1); | |
924 | if (noside == EVAL_SKIP) | |
925 | goto nosideret; | |
3b7538c0 UW |
926 | type = language_string_char_type (exp->language_defn, exp->gdbarch); |
927 | return value_string (&exp->elts[pc + 2].string, tem, type); | |
c906108c | 928 | |
a9fa03de AF |
929 | case OP_OBJC_NSSTRING: /* Objective C Foundation Class NSString constant. */ |
930 | tem = longest_to_int (exp->elts[pc + 1].longconst); | |
931 | (*pos) += 3 + BYTES_TO_EXP_ELEM (tem + 1); | |
932 | if (noside == EVAL_SKIP) | |
933 | { | |
934 | goto nosideret; | |
935 | } | |
3b7538c0 | 936 | return value_nsstring (exp->gdbarch, &exp->elts[pc + 2].string, tem + 1); |
a9fa03de | 937 | |
c906108c SS |
938 | case OP_BITSTRING: |
939 | tem = longest_to_int (exp->elts[pc + 1].longconst); | |
940 | (*pos) | |
941 | += 3 + BYTES_TO_EXP_ELEM ((tem + HOST_CHAR_BIT - 1) / HOST_CHAR_BIT); | |
942 | if (noside == EVAL_SKIP) | |
943 | goto nosideret; | |
22601c15 UW |
944 | return value_bitstring (&exp->elts[pc + 2].string, tem, |
945 | builtin_type (exp->gdbarch)->builtin_int); | |
c906108c SS |
946 | break; |
947 | ||
948 | case OP_ARRAY: | |
949 | (*pos) += 3; | |
950 | tem2 = longest_to_int (exp->elts[pc + 1].longconst); | |
951 | tem3 = longest_to_int (exp->elts[pc + 2].longconst); | |
952 | nargs = tem3 - tem2 + 1; | |
953 | type = expect_type ? check_typedef (expect_type) : NULL_TYPE; | |
954 | ||
955 | if (expect_type != NULL_TYPE && noside != EVAL_SKIP | |
956 | && TYPE_CODE (type) == TYPE_CODE_STRUCT) | |
957 | { | |
61051030 | 958 | struct value *rec = allocate_value (expect_type); |
d7f9d729 | 959 | |
990a07ab | 960 | memset (value_contents_raw (rec), '\0', TYPE_LENGTH (type)); |
c906108c SS |
961 | return evaluate_struct_tuple (rec, exp, pos, noside, nargs); |
962 | } | |
963 | ||
964 | if (expect_type != NULL_TYPE && noside != EVAL_SKIP | |
965 | && TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
966 | { | |
262452ec | 967 | struct type *range_type = TYPE_INDEX_TYPE (type); |
c906108c | 968 | struct type *element_type = TYPE_TARGET_TYPE (type); |
61051030 | 969 | struct value *array = allocate_value (expect_type); |
c906108c SS |
970 | int element_size = TYPE_LENGTH (check_typedef (element_type)); |
971 | LONGEST low_bound, high_bound, index; | |
d7f9d729 | 972 | |
c906108c SS |
973 | if (get_discrete_bounds (range_type, &low_bound, &high_bound) < 0) |
974 | { | |
975 | low_bound = 0; | |
976 | high_bound = (TYPE_LENGTH (type) / element_size) - 1; | |
977 | } | |
978 | index = low_bound; | |
990a07ab | 979 | memset (value_contents_raw (array), 0, TYPE_LENGTH (expect_type)); |
c5aa993b | 980 | for (tem = nargs; --nargs >= 0;) |
c906108c | 981 | { |
61051030 | 982 | struct value *element; |
c906108c | 983 | int index_pc = 0; |
d7f9d729 | 984 | |
c906108c SS |
985 | if (exp->elts[*pos].opcode == BINOP_RANGE) |
986 | { | |
987 | index_pc = ++(*pos); | |
988 | evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP); | |
989 | } | |
990 | element = evaluate_subexp (element_type, exp, pos, noside); | |
df407dfe | 991 | if (value_type (element) != element_type) |
c906108c SS |
992 | element = value_cast (element_type, element); |
993 | if (index_pc) | |
994 | { | |
995 | int continue_pc = *pos; | |
d7f9d729 | 996 | |
c906108c SS |
997 | *pos = index_pc; |
998 | index = init_array_element (array, element, exp, pos, noside, | |
999 | low_bound, high_bound); | |
1000 | *pos = continue_pc; | |
1001 | } | |
1002 | else | |
1003 | { | |
1004 | if (index > high_bound) | |
1005 | /* to avoid memory corruption */ | |
8a3fe4f8 | 1006 | error (_("Too many array elements")); |
990a07ab | 1007 | memcpy (value_contents_raw (array) |
c906108c | 1008 | + (index - low_bound) * element_size, |
0fd88904 | 1009 | value_contents (element), |
c906108c SS |
1010 | element_size); |
1011 | } | |
1012 | index++; | |
1013 | } | |
1014 | return array; | |
1015 | } | |
1016 | ||
1017 | if (expect_type != NULL_TYPE && noside != EVAL_SKIP | |
1018 | && TYPE_CODE (type) == TYPE_CODE_SET) | |
1019 | { | |
61051030 | 1020 | struct value *set = allocate_value (expect_type); |
47b667de | 1021 | gdb_byte *valaddr = value_contents_raw (set); |
c906108c SS |
1022 | struct type *element_type = TYPE_INDEX_TYPE (type); |
1023 | struct type *check_type = element_type; | |
1024 | LONGEST low_bound, high_bound; | |
1025 | ||
1026 | /* get targettype of elementtype */ | |
905e0470 PM |
1027 | while (TYPE_CODE (check_type) == TYPE_CODE_RANGE |
1028 | || TYPE_CODE (check_type) == TYPE_CODE_TYPEDEF) | |
c906108c SS |
1029 | check_type = TYPE_TARGET_TYPE (check_type); |
1030 | ||
1031 | if (get_discrete_bounds (element_type, &low_bound, &high_bound) < 0) | |
8a3fe4f8 | 1032 | error (_("(power)set type with unknown size")); |
c906108c SS |
1033 | memset (valaddr, '\0', TYPE_LENGTH (type)); |
1034 | for (tem = 0; tem < nargs; tem++) | |
1035 | { | |
1036 | LONGEST range_low, range_high; | |
1037 | struct type *range_low_type, *range_high_type; | |
61051030 | 1038 | struct value *elem_val; |
d7f9d729 | 1039 | |
c906108c SS |
1040 | if (exp->elts[*pos].opcode == BINOP_RANGE) |
1041 | { | |
1042 | (*pos)++; | |
1043 | elem_val = evaluate_subexp (element_type, exp, pos, noside); | |
df407dfe | 1044 | range_low_type = value_type (elem_val); |
c906108c SS |
1045 | range_low = value_as_long (elem_val); |
1046 | elem_val = evaluate_subexp (element_type, exp, pos, noside); | |
df407dfe | 1047 | range_high_type = value_type (elem_val); |
c906108c SS |
1048 | range_high = value_as_long (elem_val); |
1049 | } | |
1050 | else | |
1051 | { | |
1052 | elem_val = evaluate_subexp (element_type, exp, pos, noside); | |
df407dfe | 1053 | range_low_type = range_high_type = value_type (elem_val); |
c906108c SS |
1054 | range_low = range_high = value_as_long (elem_val); |
1055 | } | |
1056 | /* check types of elements to avoid mixture of elements from | |
c5aa993b JM |
1057 | different types. Also check if type of element is "compatible" |
1058 | with element type of powerset */ | |
c906108c SS |
1059 | if (TYPE_CODE (range_low_type) == TYPE_CODE_RANGE) |
1060 | range_low_type = TYPE_TARGET_TYPE (range_low_type); | |
1061 | if (TYPE_CODE (range_high_type) == TYPE_CODE_RANGE) | |
1062 | range_high_type = TYPE_TARGET_TYPE (range_high_type); | |
905e0470 PM |
1063 | if ((TYPE_CODE (range_low_type) != TYPE_CODE (range_high_type)) |
1064 | || (TYPE_CODE (range_low_type) == TYPE_CODE_ENUM | |
1065 | && (range_low_type != range_high_type))) | |
c906108c | 1066 | /* different element modes */ |
8a3fe4f8 | 1067 | error (_("POWERSET tuple elements of different mode")); |
905e0470 PM |
1068 | if ((TYPE_CODE (check_type) != TYPE_CODE (range_low_type)) |
1069 | || (TYPE_CODE (check_type) == TYPE_CODE_ENUM | |
1070 | && range_low_type != check_type)) | |
8a3fe4f8 | 1071 | error (_("incompatible POWERSET tuple elements")); |
c906108c SS |
1072 | if (range_low > range_high) |
1073 | { | |
8a3fe4f8 | 1074 | warning (_("empty POWERSET tuple range")); |
c906108c SS |
1075 | continue; |
1076 | } | |
1077 | if (range_low < low_bound || range_high > high_bound) | |
8a3fe4f8 | 1078 | error (_("POWERSET tuple element out of range")); |
c906108c SS |
1079 | range_low -= low_bound; |
1080 | range_high -= low_bound; | |
c5aa993b | 1081 | for (; range_low <= range_high; range_low++) |
c906108c SS |
1082 | { |
1083 | int bit_index = (unsigned) range_low % TARGET_CHAR_BIT; | |
d7f9d729 | 1084 | |
34e13b5b | 1085 | if (gdbarch_bits_big_endian (exp->gdbarch)) |
c906108c | 1086 | bit_index = TARGET_CHAR_BIT - 1 - bit_index; |
c5aa993b | 1087 | valaddr[(unsigned) range_low / TARGET_CHAR_BIT] |
c906108c SS |
1088 | |= 1 << bit_index; |
1089 | } | |
1090 | } | |
1091 | return set; | |
1092 | } | |
1093 | ||
f976f6d4 | 1094 | argvec = (struct value **) alloca (sizeof (struct value *) * nargs); |
c906108c SS |
1095 | for (tem = 0; tem < nargs; tem++) |
1096 | { | |
1097 | /* Ensure that array expressions are coerced into pointer objects. */ | |
1098 | argvec[tem] = evaluate_subexp_with_coercion (exp, pos, noside); | |
1099 | } | |
1100 | if (noside == EVAL_SKIP) | |
1101 | goto nosideret; | |
1102 | return value_array (tem2, tem3, argvec); | |
1103 | ||
1104 | case TERNOP_SLICE: | |
1105 | { | |
61051030 | 1106 | struct value *array = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
c906108c | 1107 | int lowbound |
d7f9d729 | 1108 | = value_as_long (evaluate_subexp (NULL_TYPE, exp, pos, noside)); |
c906108c | 1109 | int upper |
d7f9d729 MS |
1110 | = value_as_long (evaluate_subexp (NULL_TYPE, exp, pos, noside)); |
1111 | ||
c906108c SS |
1112 | if (noside == EVAL_SKIP) |
1113 | goto nosideret; | |
1114 | return value_slice (array, lowbound, upper - lowbound + 1); | |
1115 | } | |
1116 | ||
1117 | case TERNOP_SLICE_COUNT: | |
1118 | { | |
61051030 | 1119 | struct value *array = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
c906108c | 1120 | int lowbound |
d7f9d729 | 1121 | = value_as_long (evaluate_subexp (NULL_TYPE, exp, pos, noside)); |
c906108c | 1122 | int length |
d7f9d729 MS |
1123 | = value_as_long (evaluate_subexp (NULL_TYPE, exp, pos, noside)); |
1124 | ||
c906108c SS |
1125 | return value_slice (array, lowbound, length); |
1126 | } | |
1127 | ||
1128 | case TERNOP_COND: | |
1129 | /* Skip third and second args to evaluate the first one. */ | |
1130 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
1131 | if (value_logical_not (arg1)) | |
1132 | { | |
1133 | evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP); | |
1134 | return evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
1135 | } | |
1136 | else | |
1137 | { | |
1138 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
1139 | evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP); | |
1140 | return arg2; | |
1141 | } | |
1142 | ||
a9fa03de AF |
1143 | case OP_OBJC_SELECTOR: |
1144 | { /* Objective C @selector operator. */ | |
1145 | char *sel = &exp->elts[pc + 2].string; | |
1146 | int len = longest_to_int (exp->elts[pc + 1].longconst); | |
d4dbb9c7 | 1147 | struct type *selector_type; |
a9fa03de AF |
1148 | |
1149 | (*pos) += 3 + BYTES_TO_EXP_ELEM (len + 1); | |
1150 | if (noside == EVAL_SKIP) | |
1151 | goto nosideret; | |
1152 | ||
1153 | if (sel[len] != 0) | |
1154 | sel[len] = 0; /* Make sure it's terminated. */ | |
d4dbb9c7 UW |
1155 | |
1156 | selector_type = builtin_type (exp->gdbarch)->builtin_data_ptr; | |
3b7538c0 UW |
1157 | return value_from_longest (selector_type, |
1158 | lookup_child_selector (exp->gdbarch, sel)); | |
a9fa03de AF |
1159 | } |
1160 | ||
1161 | case OP_OBJC_MSGCALL: | |
1162 | { /* Objective C message (method) call. */ | |
1163 | ||
17dd65ce TT |
1164 | CORE_ADDR responds_selector = 0; |
1165 | CORE_ADDR method_selector = 0; | |
a9fa03de | 1166 | |
c253954e | 1167 | CORE_ADDR selector = 0; |
a9fa03de | 1168 | |
a9fa03de AF |
1169 | int struct_return = 0; |
1170 | int sub_no_side = 0; | |
1171 | ||
17dd65ce TT |
1172 | struct value *msg_send = NULL; |
1173 | struct value *msg_send_stret = NULL; | |
1174 | int gnu_runtime = 0; | |
a9fa03de AF |
1175 | |
1176 | struct value *target = NULL; | |
1177 | struct value *method = NULL; | |
1178 | struct value *called_method = NULL; | |
1179 | ||
1180 | struct type *selector_type = NULL; | |
d4dbb9c7 | 1181 | struct type *long_type; |
a9fa03de AF |
1182 | |
1183 | struct value *ret = NULL; | |
1184 | CORE_ADDR addr = 0; | |
1185 | ||
1186 | selector = exp->elts[pc + 1].longconst; | |
1187 | nargs = exp->elts[pc + 2].longconst; | |
1188 | argvec = (struct value **) alloca (sizeof (struct value *) | |
1189 | * (nargs + 5)); | |
1190 | ||
1191 | (*pos) += 3; | |
1192 | ||
d4dbb9c7 UW |
1193 | long_type = builtin_type (exp->gdbarch)->builtin_long; |
1194 | selector_type = builtin_type (exp->gdbarch)->builtin_data_ptr; | |
1195 | ||
a9fa03de AF |
1196 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
1197 | sub_no_side = EVAL_NORMAL; | |
1198 | else | |
1199 | sub_no_side = noside; | |
1200 | ||
1201 | target = evaluate_subexp (selector_type, exp, pos, sub_no_side); | |
1202 | ||
1203 | if (value_as_long (target) == 0) | |
d4dbb9c7 | 1204 | return value_from_longest (long_type, 0); |
a9fa03de AF |
1205 | |
1206 | if (lookup_minimal_symbol ("objc_msg_lookup", 0, 0)) | |
1207 | gnu_runtime = 1; | |
1208 | ||
1209 | /* Find the method dispatch (Apple runtime) or method lookup | |
1210 | (GNU runtime) function for Objective-C. These will be used | |
1211 | to lookup the symbol information for the method. If we | |
1212 | can't find any symbol information, then we'll use these to | |
1213 | call the method, otherwise we can call the method | |
1214 | directly. The msg_send_stret function is used in the special | |
1215 | case of a method that returns a structure (Apple runtime | |
1216 | only). */ | |
1217 | if (gnu_runtime) | |
1218 | { | |
d4dbb9c7 | 1219 | struct type *type = selector_type; |
d7f9d729 | 1220 | |
c253954e JB |
1221 | type = lookup_function_type (type); |
1222 | type = lookup_pointer_type (type); | |
1223 | type = lookup_function_type (type); | |
1224 | type = lookup_pointer_type (type); | |
1225 | ||
3e3b026f UW |
1226 | msg_send = find_function_in_inferior ("objc_msg_lookup", NULL); |
1227 | msg_send_stret | |
1228 | = find_function_in_inferior ("objc_msg_lookup", NULL); | |
c253954e JB |
1229 | |
1230 | msg_send = value_from_pointer (type, value_as_address (msg_send)); | |
1231 | msg_send_stret = value_from_pointer (type, | |
1232 | value_as_address (msg_send_stret)); | |
a9fa03de AF |
1233 | } |
1234 | else | |
1235 | { | |
3e3b026f | 1236 | msg_send = find_function_in_inferior ("objc_msgSend", NULL); |
a9fa03de | 1237 | /* Special dispatcher for methods returning structs */ |
3e3b026f UW |
1238 | msg_send_stret |
1239 | = find_function_in_inferior ("objc_msgSend_stret", NULL); | |
a9fa03de AF |
1240 | } |
1241 | ||
1242 | /* Verify the target object responds to this method. The | |
1243 | standard top-level 'Object' class uses a different name for | |
1244 | the verification method than the non-standard, but more | |
1245 | often used, 'NSObject' class. Make sure we check for both. */ | |
1246 | ||
3b7538c0 UW |
1247 | responds_selector |
1248 | = lookup_child_selector (exp->gdbarch, "respondsToSelector:"); | |
a9fa03de | 1249 | if (responds_selector == 0) |
3b7538c0 UW |
1250 | responds_selector |
1251 | = lookup_child_selector (exp->gdbarch, "respondsTo:"); | |
a9fa03de AF |
1252 | |
1253 | if (responds_selector == 0) | |
8a3fe4f8 | 1254 | error (_("no 'respondsTo:' or 'respondsToSelector:' method")); |
a9fa03de | 1255 | |
3b7538c0 UW |
1256 | method_selector |
1257 | = lookup_child_selector (exp->gdbarch, "methodForSelector:"); | |
a9fa03de | 1258 | if (method_selector == 0) |
3b7538c0 UW |
1259 | method_selector |
1260 | = lookup_child_selector (exp->gdbarch, "methodFor:"); | |
a9fa03de AF |
1261 | |
1262 | if (method_selector == 0) | |
8a3fe4f8 | 1263 | error (_("no 'methodFor:' or 'methodForSelector:' method")); |
a9fa03de AF |
1264 | |
1265 | /* Call the verification method, to make sure that the target | |
1266 | class implements the desired method. */ | |
1267 | ||
1268 | argvec[0] = msg_send; | |
1269 | argvec[1] = target; | |
d4dbb9c7 UW |
1270 | argvec[2] = value_from_longest (long_type, responds_selector); |
1271 | argvec[3] = value_from_longest (long_type, selector); | |
a9fa03de AF |
1272 | argvec[4] = 0; |
1273 | ||
1274 | ret = call_function_by_hand (argvec[0], 3, argvec + 1); | |
1275 | if (gnu_runtime) | |
1276 | { | |
1277 | /* Function objc_msg_lookup returns a pointer. */ | |
1278 | argvec[0] = ret; | |
1279 | ret = call_function_by_hand (argvec[0], 3, argvec + 1); | |
1280 | } | |
1281 | if (value_as_long (ret) == 0) | |
8a3fe4f8 | 1282 | error (_("Target does not respond to this message selector.")); |
a9fa03de AF |
1283 | |
1284 | /* Call "methodForSelector:" method, to get the address of a | |
1285 | function method that implements this selector for this | |
1286 | class. If we can find a symbol at that address, then we | |
1287 | know the return type, parameter types etc. (that's a good | |
1288 | thing). */ | |
1289 | ||
1290 | argvec[0] = msg_send; | |
1291 | argvec[1] = target; | |
d4dbb9c7 UW |
1292 | argvec[2] = value_from_longest (long_type, method_selector); |
1293 | argvec[3] = value_from_longest (long_type, selector); | |
a9fa03de AF |
1294 | argvec[4] = 0; |
1295 | ||
1296 | ret = call_function_by_hand (argvec[0], 3, argvec + 1); | |
1297 | if (gnu_runtime) | |
1298 | { | |
1299 | argvec[0] = ret; | |
1300 | ret = call_function_by_hand (argvec[0], 3, argvec + 1); | |
1301 | } | |
1302 | ||
1303 | /* ret should now be the selector. */ | |
1304 | ||
1305 | addr = value_as_long (ret); | |
1306 | if (addr) | |
1307 | { | |
1308 | struct symbol *sym = NULL; | |
a9fa03de | 1309 | |
69368a60 UW |
1310 | /* The address might point to a function descriptor; |
1311 | resolve it to the actual code address instead. */ | |
1312 | addr = gdbarch_convert_from_func_ptr_addr (exp->gdbarch, addr, | |
1313 | ¤t_target); | |
1314 | ||
1315 | /* Is it a high_level symbol? */ | |
a9fa03de AF |
1316 | sym = find_pc_function (addr); |
1317 | if (sym != NULL) | |
1318 | method = value_of_variable (sym, 0); | |
1319 | } | |
1320 | ||
1321 | /* If we found a method with symbol information, check to see | |
1322 | if it returns a struct. Otherwise assume it doesn't. */ | |
1323 | ||
1324 | if (method) | |
1325 | { | |
1326 | struct block *b; | |
1327 | CORE_ADDR funaddr; | |
c055b101 | 1328 | struct type *val_type; |
a9fa03de | 1329 | |
c055b101 | 1330 | funaddr = find_function_addr (method, &val_type); |
a9fa03de AF |
1331 | |
1332 | b = block_for_pc (funaddr); | |
1333 | ||
c055b101 | 1334 | CHECK_TYPEDEF (val_type); |
a9fa03de | 1335 | |
c055b101 CV |
1336 | if ((val_type == NULL) |
1337 | || (TYPE_CODE(val_type) == TYPE_CODE_ERROR)) | |
a9fa03de AF |
1338 | { |
1339 | if (expect_type != NULL) | |
c055b101 | 1340 | val_type = expect_type; |
a9fa03de AF |
1341 | } |
1342 | ||
d80b854b UW |
1343 | struct_return = using_struct_return (exp->gdbarch, |
1344 | value_type (method), val_type); | |
a9fa03de AF |
1345 | } |
1346 | else if (expect_type != NULL) | |
1347 | { | |
d80b854b | 1348 | struct_return = using_struct_return (exp->gdbarch, NULL, |
c055b101 | 1349 | check_typedef (expect_type)); |
a9fa03de AF |
1350 | } |
1351 | ||
1352 | /* Found a function symbol. Now we will substitute its | |
1353 | value in place of the message dispatcher (obj_msgSend), | |
1354 | so that we call the method directly instead of thru | |
1355 | the dispatcher. The main reason for doing this is that | |
1356 | we can now evaluate the return value and parameter values | |
1357 | according to their known data types, in case we need to | |
1358 | do things like promotion, dereferencing, special handling | |
1359 | of structs and doubles, etc. | |
1360 | ||
1361 | We want to use the type signature of 'method', but still | |
1362 | jump to objc_msgSend() or objc_msgSend_stret() to better | |
1363 | mimic the behavior of the runtime. */ | |
1364 | ||
1365 | if (method) | |
1366 | { | |
df407dfe | 1367 | if (TYPE_CODE (value_type (method)) != TYPE_CODE_FUNC) |
8a3fe4f8 | 1368 | error (_("method address has symbol information with non-function type; skipping")); |
69368a60 UW |
1369 | |
1370 | /* Create a function pointer of the appropriate type, and replace | |
1371 | its value with the value of msg_send or msg_send_stret. We must | |
1372 | use a pointer here, as msg_send and msg_send_stret are of pointer | |
1373 | type, and the representation may be different on systems that use | |
1374 | function descriptors. */ | |
a9fa03de | 1375 | if (struct_return) |
69368a60 UW |
1376 | called_method |
1377 | = value_from_pointer (lookup_pointer_type (value_type (method)), | |
1378 | value_as_address (msg_send_stret)); | |
a9fa03de | 1379 | else |
69368a60 UW |
1380 | called_method |
1381 | = value_from_pointer (lookup_pointer_type (value_type (method)), | |
1382 | value_as_address (msg_send)); | |
a9fa03de AF |
1383 | } |
1384 | else | |
1385 | { | |
1386 | if (struct_return) | |
1387 | called_method = msg_send_stret; | |
1388 | else | |
1389 | called_method = msg_send; | |
1390 | } | |
1391 | ||
1392 | if (noside == EVAL_SKIP) | |
1393 | goto nosideret; | |
1394 | ||
1395 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
1396 | { | |
1397 | /* If the return type doesn't look like a function type, | |
1398 | call an error. This can happen if somebody tries to | |
1399 | turn a variable into a function call. This is here | |
1400 | because people often want to call, eg, strcmp, which | |
1401 | gdb doesn't know is a function. If gdb isn't asked for | |
1402 | it's opinion (ie. through "whatis"), it won't offer | |
1403 | it. */ | |
1404 | ||
df407dfe | 1405 | struct type *type = value_type (called_method); |
d7f9d729 | 1406 | |
a9fa03de AF |
1407 | if (type && TYPE_CODE (type) == TYPE_CODE_PTR) |
1408 | type = TYPE_TARGET_TYPE (type); | |
1409 | type = TYPE_TARGET_TYPE (type); | |
1410 | ||
1411 | if (type) | |
1412 | { | |
1413 | if ((TYPE_CODE (type) == TYPE_CODE_ERROR) && expect_type) | |
1414 | return allocate_value (expect_type); | |
1415 | else | |
1416 | return allocate_value (type); | |
1417 | } | |
1418 | else | |
8a3fe4f8 | 1419 | error (_("Expression of type other than \"method returning ...\" used as a method")); |
a9fa03de AF |
1420 | } |
1421 | ||
1422 | /* Now depending on whether we found a symbol for the method, | |
1423 | we will either call the runtime dispatcher or the method | |
1424 | directly. */ | |
1425 | ||
1426 | argvec[0] = called_method; | |
1427 | argvec[1] = target; | |
d4dbb9c7 | 1428 | argvec[2] = value_from_longest (long_type, selector); |
a9fa03de AF |
1429 | /* User-supplied arguments. */ |
1430 | for (tem = 0; tem < nargs; tem++) | |
1431 | argvec[tem + 3] = evaluate_subexp_with_coercion (exp, pos, noside); | |
1432 | argvec[tem + 3] = 0; | |
1433 | ||
1434 | if (gnu_runtime && (method != NULL)) | |
1435 | { | |
a9fa03de | 1436 | /* Function objc_msg_lookup returns a pointer. */ |
04624583 | 1437 | deprecated_set_value_type (argvec[0], |
69368a60 | 1438 | lookup_pointer_type (lookup_function_type (value_type (argvec[0])))); |
c253954e | 1439 | argvec[0] = call_function_by_hand (argvec[0], nargs + 2, argvec + 1); |
a9fa03de | 1440 | } |
a9fa03de | 1441 | |
c253954e | 1442 | ret = call_function_by_hand (argvec[0], nargs + 2, argvec + 1); |
a9fa03de AF |
1443 | return ret; |
1444 | } | |
1445 | break; | |
1446 | ||
c906108c SS |
1447 | case OP_FUNCALL: |
1448 | (*pos) += 2; | |
1449 | op = exp->elts[*pos].opcode; | |
1450 | nargs = longest_to_int (exp->elts[pc + 1].longconst); | |
1451 | /* Allocate arg vector, including space for the function to be | |
c5aa993b | 1452 | called in argvec[0] and a terminating NULL */ |
f976f6d4 | 1453 | argvec = (struct value **) alloca (sizeof (struct value *) * (nargs + 3)); |
c906108c SS |
1454 | if (op == STRUCTOP_MEMBER || op == STRUCTOP_MPTR) |
1455 | { | |
c906108c SS |
1456 | nargs++; |
1457 | /* First, evaluate the structure into arg2 */ | |
1458 | pc2 = (*pos)++; | |
1459 | ||
1460 | if (noside == EVAL_SKIP) | |
1461 | goto nosideret; | |
1462 | ||
1463 | if (op == STRUCTOP_MEMBER) | |
1464 | { | |
1465 | arg2 = evaluate_subexp_for_address (exp, pos, noside); | |
1466 | } | |
1467 | else | |
1468 | { | |
1469 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
1470 | } | |
1471 | ||
1472 | /* If the function is a virtual function, then the | |
1473 | aggregate value (providing the structure) plays | |
1474 | its part by providing the vtable. Otherwise, | |
1475 | it is just along for the ride: call the function | |
1476 | directly. */ | |
1477 | ||
1478 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
1479 | ||
0d5de010 DJ |
1480 | if (TYPE_CODE (check_typedef (value_type (arg1))) |
1481 | != TYPE_CODE_METHODPTR) | |
1482 | error (_("Non-pointer-to-member value used in pointer-to-member " | |
1483 | "construct")); | |
c906108c | 1484 | |
0d5de010 | 1485 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
c906108c | 1486 | { |
0d5de010 | 1487 | struct type *method_type = check_typedef (value_type (arg1)); |
d7f9d729 | 1488 | |
0d5de010 | 1489 | arg1 = value_zero (method_type, not_lval); |
c906108c SS |
1490 | } |
1491 | else | |
0d5de010 | 1492 | arg1 = cplus_method_ptr_to_value (&arg2, arg1); |
c906108c SS |
1493 | |
1494 | /* Now, say which argument to start evaluating from */ | |
1495 | tem = 2; | |
1496 | } | |
1497 | else if (op == STRUCTOP_STRUCT || op == STRUCTOP_PTR) | |
1498 | { | |
1499 | /* Hair for method invocations */ | |
1500 | int tem2; | |
1501 | ||
1502 | nargs++; | |
1503 | /* First, evaluate the structure into arg2 */ | |
1504 | pc2 = (*pos)++; | |
1505 | tem2 = longest_to_int (exp->elts[pc2 + 1].longconst); | |
1506 | *pos += 3 + BYTES_TO_EXP_ELEM (tem2 + 1); | |
1507 | if (noside == EVAL_SKIP) | |
1508 | goto nosideret; | |
1509 | ||
1510 | if (op == STRUCTOP_STRUCT) | |
1511 | { | |
1512 | /* If v is a variable in a register, and the user types | |
c5aa993b JM |
1513 | v.method (), this will produce an error, because v has |
1514 | no address. | |
1515 | ||
1516 | A possible way around this would be to allocate a | |
1517 | copy of the variable on the stack, copy in the | |
1518 | contents, call the function, and copy out the | |
1519 | contents. I.e. convert this from call by reference | |
1520 | to call by copy-return (or whatever it's called). | |
1521 | However, this does not work because it is not the | |
1522 | same: the method being called could stash a copy of | |
1523 | the address, and then future uses through that address | |
1524 | (after the method returns) would be expected to | |
1525 | use the variable itself, not some copy of it. */ | |
c906108c SS |
1526 | arg2 = evaluate_subexp_for_address (exp, pos, noside); |
1527 | } | |
1528 | else | |
1529 | { | |
1530 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
79afc5ef SW |
1531 | |
1532 | /* Check to see if the operator '->' has been overloaded. If the operator | |
1533 | has been overloaded replace arg2 with the value returned by the custom | |
1534 | operator and continue evaluation. */ | |
1535 | while (unop_user_defined_p (op, arg2)) | |
1536 | { | |
1537 | volatile struct gdb_exception except; | |
1538 | struct value *value = NULL; | |
1539 | TRY_CATCH (except, RETURN_MASK_ERROR) | |
1540 | { | |
1541 | value = value_x_unop (arg2, op, noside); | |
1542 | } | |
1543 | ||
1544 | if (except.reason < 0) | |
1545 | { | |
1546 | if (except.error == NOT_FOUND_ERROR) | |
1547 | break; | |
1548 | else | |
1549 | throw_exception (except); | |
1550 | } | |
1551 | arg2 = value; | |
1552 | } | |
c906108c SS |
1553 | } |
1554 | /* Now, say which argument to start evaluating from */ | |
1555 | tem = 2; | |
1556 | } | |
714f19d5 TT |
1557 | else if (op == OP_SCOPE |
1558 | && overload_resolution | |
1559 | && (exp->language_defn->la_language == language_cplus)) | |
1560 | { | |
1561 | /* Unpack it locally so we can properly handle overload | |
1562 | resolution. */ | |
714f19d5 TT |
1563 | char *name; |
1564 | int local_tem; | |
1565 | ||
1566 | pc2 = (*pos)++; | |
1567 | local_tem = longest_to_int (exp->elts[pc2 + 2].longconst); | |
1568 | (*pos) += 4 + BYTES_TO_EXP_ELEM (local_tem + 1); | |
1569 | type = exp->elts[pc2 + 1].type; | |
1570 | name = &exp->elts[pc2 + 3].string; | |
1571 | ||
1572 | function = NULL; | |
1573 | function_name = NULL; | |
1574 | if (TYPE_CODE (type) == TYPE_CODE_NAMESPACE) | |
1575 | { | |
1576 | function = cp_lookup_symbol_namespace (TYPE_TAG_NAME (type), | |
94af9270 | 1577 | name, |
714f19d5 | 1578 | get_selected_block (0), |
13387711 | 1579 | VAR_DOMAIN); |
714f19d5 TT |
1580 | if (function == NULL) |
1581 | error (_("No symbol \"%s\" in namespace \"%s\"."), | |
1582 | name, TYPE_TAG_NAME (type)); | |
1583 | ||
1584 | tem = 1; | |
1585 | } | |
1586 | else | |
1587 | { | |
1588 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_STRUCT | |
1589 | || TYPE_CODE (type) == TYPE_CODE_UNION); | |
1590 | function_name = name; | |
1591 | ||
1592 | arg2 = value_zero (type, lval_memory); | |
1593 | ++nargs; | |
1594 | tem = 2; | |
1595 | } | |
1596 | } | |
7322dca9 SW |
1597 | else if (op == OP_ADL_FUNC) |
1598 | { | |
1599 | /* Save the function position and move pos so that the arguments | |
1600 | can be evaluated. */ | |
1601 | int func_name_len; | |
d7f9d729 | 1602 | |
7322dca9 SW |
1603 | save_pos1 = *pos; |
1604 | tem = 1; | |
1605 | ||
1606 | func_name_len = longest_to_int (exp->elts[save_pos1 + 3].longconst); | |
1607 | (*pos) += 6 + BYTES_TO_EXP_ELEM (func_name_len + 1); | |
1608 | } | |
c906108c SS |
1609 | else |
1610 | { | |
1611 | /* Non-method function call */ | |
1612 | save_pos1 = *pos; | |
c906108c | 1613 | tem = 1; |
883df6dd SW |
1614 | |
1615 | /* If this is a C++ function wait until overload resolution. */ | |
1616 | if (op == OP_VAR_VALUE | |
1617 | && overload_resolution | |
1618 | && (exp->language_defn->la_language == language_cplus)) | |
c906108c | 1619 | { |
883df6dd SW |
1620 | (*pos) += 4; /* Skip the evaluation of the symbol. */ |
1621 | argvec[0] = NULL; | |
1622 | } | |
1623 | else | |
1624 | { | |
1625 | argvec[0] = evaluate_subexp_with_coercion (exp, pos, noside); | |
1626 | type = value_type (argvec[0]); | |
1627 | if (type && TYPE_CODE (type) == TYPE_CODE_PTR) | |
1628 | type = TYPE_TARGET_TYPE (type); | |
1629 | if (type && TYPE_CODE (type) == TYPE_CODE_FUNC) | |
c906108c | 1630 | { |
883df6dd SW |
1631 | for (; tem <= nargs && tem <= TYPE_NFIELDS (type); tem++) |
1632 | { | |
1633 | argvec[tem] = evaluate_subexp (TYPE_FIELD_TYPE (type, tem - 1), | |
1634 | exp, pos, noside); | |
1635 | } | |
c906108c SS |
1636 | } |
1637 | } | |
1638 | } | |
1639 | ||
1640 | /* Evaluate arguments */ | |
1641 | for (; tem <= nargs; tem++) | |
1642 | { | |
1643 | /* Ensure that array expressions are coerced into pointer objects. */ | |
1644 | argvec[tem] = evaluate_subexp_with_coercion (exp, pos, noside); | |
1645 | } | |
1646 | ||
1647 | /* signal end of arglist */ | |
1648 | argvec[tem] = 0; | |
7322dca9 SW |
1649 | if (op == OP_ADL_FUNC) |
1650 | { | |
1651 | struct symbol *symp; | |
1652 | char *func_name; | |
1653 | int name_len; | |
1654 | int string_pc = save_pos1 + 3; | |
1655 | ||
1656 | /* Extract the function name. */ | |
1657 | name_len = longest_to_int (exp->elts[string_pc].longconst); | |
1658 | func_name = (char *) alloca (name_len + 1); | |
1659 | strcpy (func_name, &exp->elts[string_pc + 1].string); | |
1660 | ||
1661 | /* Prepare list of argument types for overload resolution */ | |
1662 | arg_types = (struct type **) alloca (nargs * (sizeof (struct type *))); | |
1663 | for (ix = 1; ix <= nargs; ix++) | |
1664 | arg_types[ix - 1] = value_type (argvec[ix]); | |
1665 | ||
1666 | find_overload_match (arg_types, nargs, func_name, | |
4c3376c8 | 1667 | NON_METHOD /* not method */ , 0 /* strict match */ , |
7322dca9 SW |
1668 | NULL, NULL /* pass NULL symbol since symbol is unknown */ , |
1669 | NULL, &symp, NULL, 0); | |
1670 | ||
1671 | /* Now fix the expression being evaluated. */ | |
1672 | exp->elts[save_pos1 + 2].symbol = symp; | |
1673 | argvec[0] = evaluate_subexp_with_coercion (exp, &save_pos1, noside); | |
1674 | } | |
c906108c | 1675 | |
714f19d5 TT |
1676 | if (op == STRUCTOP_STRUCT || op == STRUCTOP_PTR |
1677 | || (op == OP_SCOPE && function_name != NULL)) | |
c906108c SS |
1678 | { |
1679 | int static_memfuncp; | |
714f19d5 | 1680 | char *tstr; |
c5aa993b JM |
1681 | |
1682 | /* Method invocation : stuff "this" as first parameter */ | |
9b013045 | 1683 | argvec[1] = arg2; |
714f19d5 TT |
1684 | |
1685 | if (op != OP_SCOPE) | |
1686 | { | |
1687 | /* Name of method from expression */ | |
1688 | tstr = &exp->elts[pc2 + 2].string; | |
1689 | } | |
1690 | else | |
1691 | tstr = function_name; | |
c5aa993b JM |
1692 | |
1693 | if (overload_resolution && (exp->language_defn->la_language == language_cplus)) | |
1694 | { | |
1695 | /* Language is C++, do some overload resolution before evaluation */ | |
61051030 | 1696 | struct value *valp = NULL; |
c5aa993b JM |
1697 | |
1698 | /* Prepare list of argument types for overload resolution */ | |
c2636352 | 1699 | arg_types = (struct type **) alloca (nargs * (sizeof (struct type *))); |
c5aa993b | 1700 | for (ix = 1; ix <= nargs; ix++) |
df407dfe | 1701 | arg_types[ix - 1] = value_type (argvec[ix]); |
c5aa993b JM |
1702 | |
1703 | (void) find_overload_match (arg_types, nargs, tstr, | |
4c3376c8 | 1704 | METHOD /* method */ , 0 /* strict match */ , |
7f8c9282 | 1705 | &arg2 /* the object */ , NULL, |
7322dca9 | 1706 | &valp, NULL, &static_memfuncp, 0); |
c5aa993b | 1707 | |
714f19d5 TT |
1708 | if (op == OP_SCOPE && !static_memfuncp) |
1709 | { | |
1710 | /* For the time being, we don't handle this. */ | |
1711 | error (_("Call to overloaded function %s requires " | |
1712 | "`this' pointer"), | |
1713 | function_name); | |
1714 | } | |
c5aa993b JM |
1715 | argvec[1] = arg2; /* the ``this'' pointer */ |
1716 | argvec[0] = valp; /* use the method found after overload resolution */ | |
1717 | } | |
1718 | else | |
1719 | /* Non-C++ case -- or no overload resolution */ | |
1720 | { | |
9b013045 | 1721 | struct value *temp = arg2; |
d7f9d729 | 1722 | |
c5aa993b JM |
1723 | argvec[0] = value_struct_elt (&temp, argvec + 1, tstr, |
1724 | &static_memfuncp, | |
1725 | op == STRUCTOP_STRUCT | |
1726 | ? "structure" : "structure pointer"); | |
9b013045 PS |
1727 | /* value_struct_elt updates temp with the correct value |
1728 | of the ``this'' pointer if necessary, so modify argvec[1] to | |
1729 | reflect any ``this'' changes. */ | |
df407dfe | 1730 | arg2 = value_from_longest (lookup_pointer_type(value_type (temp)), |
42ae5230 | 1731 | value_address (temp) |
13c3b5f5 | 1732 | + value_embedded_offset (temp)); |
c5aa993b JM |
1733 | argvec[1] = arg2; /* the ``this'' pointer */ |
1734 | } | |
c906108c SS |
1735 | |
1736 | if (static_memfuncp) | |
1737 | { | |
1738 | argvec[1] = argvec[0]; | |
1739 | nargs--; | |
1740 | argvec++; | |
1741 | } | |
1742 | } | |
1743 | else if (op == STRUCTOP_MEMBER || op == STRUCTOP_MPTR) | |
1744 | { | |
1745 | argvec[1] = arg2; | |
1746 | argvec[0] = arg1; | |
1747 | } | |
714f19d5 | 1748 | else if (op == OP_VAR_VALUE || (op == OP_SCOPE && function != NULL)) |
c5aa993b | 1749 | { |
c906108c | 1750 | /* Non-member function being called */ |
917317f4 JM |
1751 | /* fn: This can only be done for C++ functions. A C-style function |
1752 | in a C++ program, for instance, does not have the fields that | |
1753 | are expected here */ | |
c906108c | 1754 | |
c5aa993b JM |
1755 | if (overload_resolution && (exp->language_defn->la_language == language_cplus)) |
1756 | { | |
1757 | /* Language is C++, do some overload resolution before evaluation */ | |
1758 | struct symbol *symp; | |
7322dca9 SW |
1759 | int no_adl = 0; |
1760 | ||
1761 | /* If a scope has been specified disable ADL. */ | |
1762 | if (op == OP_SCOPE) | |
1763 | no_adl = 1; | |
c5aa993b | 1764 | |
714f19d5 TT |
1765 | if (op == OP_VAR_VALUE) |
1766 | function = exp->elts[save_pos1+2].symbol; | |
1767 | ||
c5aa993b | 1768 | /* Prepare list of argument types for overload resolution */ |
c2636352 | 1769 | arg_types = (struct type **) alloca (nargs * (sizeof (struct type *))); |
c5aa993b | 1770 | for (ix = 1; ix <= nargs; ix++) |
df407dfe | 1771 | arg_types[ix - 1] = value_type (argvec[ix]); |
c5aa993b JM |
1772 | |
1773 | (void) find_overload_match (arg_types, nargs, NULL /* no need for name */ , | |
4c3376c8 SW |
1774 | NON_METHOD /* not method */ , 0 /* strict match */ , |
1775 | NULL, function /* the function */ , | |
7322dca9 | 1776 | NULL, &symp, NULL, no_adl); |
c5aa993b | 1777 | |
714f19d5 TT |
1778 | if (op == OP_VAR_VALUE) |
1779 | { | |
1780 | /* Now fix the expression being evaluated */ | |
1781 | exp->elts[save_pos1+2].symbol = symp; | |
1782 | argvec[0] = evaluate_subexp_with_coercion (exp, &save_pos1, | |
1783 | noside); | |
1784 | } | |
1785 | else | |
1786 | argvec[0] = value_of_variable (symp, get_selected_block (0)); | |
c5aa993b JM |
1787 | } |
1788 | else | |
1789 | { | |
1790 | /* Not C++, or no overload resolution allowed */ | |
1791 | /* nothing to be done; argvec already correctly set up */ | |
1792 | } | |
1793 | } | |
917317f4 JM |
1794 | else |
1795 | { | |
1796 | /* It is probably a C-style function */ | |
1797 | /* nothing to be done; argvec already correctly set up */ | |
1798 | } | |
c906108c SS |
1799 | |
1800 | do_call_it: | |
1801 | ||
1802 | if (noside == EVAL_SKIP) | |
1803 | goto nosideret; | |
0478d61c | 1804 | if (argvec[0] == NULL) |
8a3fe4f8 | 1805 | error (_("Cannot evaluate function -- may be inlined")); |
c906108c SS |
1806 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
1807 | { | |
1808 | /* If the return type doesn't look like a function type, call an | |
1809 | error. This can happen if somebody tries to turn a variable into | |
1810 | a function call. This is here because people often want to | |
1811 | call, eg, strcmp, which gdb doesn't know is a function. If | |
1812 | gdb isn't asked for it's opinion (ie. through "whatis"), | |
1813 | it won't offer it. */ | |
1814 | ||
329719ec | 1815 | struct type *ftype = value_type (argvec[0]); |
c906108c | 1816 | |
329719ec TT |
1817 | if (TYPE_CODE (ftype) == TYPE_CODE_INTERNAL_FUNCTION) |
1818 | { | |
1819 | /* We don't know anything about what the internal | |
1820 | function might return, but we have to return | |
1821 | something. */ | |
1822 | return value_zero (builtin_type (exp->gdbarch)->builtin_int, | |
1823 | not_lval); | |
1824 | } | |
1825 | else if (TYPE_TARGET_TYPE (ftype)) | |
1826 | return allocate_value (TYPE_TARGET_TYPE (ftype)); | |
c906108c | 1827 | else |
8a3fe4f8 | 1828 | error (_("Expression of type other than \"Function returning ...\" used as function")); |
c906108c | 1829 | } |
bc3b79fd | 1830 | if (TYPE_CODE (value_type (argvec[0])) == TYPE_CODE_INTERNAL_FUNCTION) |
d452c4bc UW |
1831 | return call_internal_function (exp->gdbarch, exp->language_defn, |
1832 | argvec[0], nargs, argvec + 1); | |
bc3b79fd | 1833 | |
c906108c SS |
1834 | return call_function_by_hand (argvec[0], nargs, argvec + 1); |
1835 | /* pai: FIXME save value from call_function_by_hand, then adjust pc by adjust_fn_pc if +ve */ | |
1836 | ||
c5aa993b | 1837 | case OP_F77_UNDETERMINED_ARGLIST: |
c906108c SS |
1838 | |
1839 | /* Remember that in F77, functions, substring ops and | |
1840 | array subscript operations cannot be disambiguated | |
1841 | at parse time. We have made all array subscript operations, | |
1842 | substring operations as well as function calls come here | |
1843 | and we now have to discover what the heck this thing actually was. | |
c5aa993b | 1844 | If it is a function, we process just as if we got an OP_FUNCALL. */ |
c906108c | 1845 | |
c5aa993b | 1846 | nargs = longest_to_int (exp->elts[pc + 1].longconst); |
c906108c SS |
1847 | (*pos) += 2; |
1848 | ||
c5aa993b | 1849 | /* First determine the type code we are dealing with. */ |
c906108c | 1850 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
df407dfe | 1851 | type = check_typedef (value_type (arg1)); |
c906108c SS |
1852 | code = TYPE_CODE (type); |
1853 | ||
df0ca547 WZ |
1854 | if (code == TYPE_CODE_PTR) |
1855 | { | |
1856 | /* Fortran always passes variable to subroutines as pointer. | |
1857 | So we need to look into its target type to see if it is | |
1858 | array, string or function. If it is, we need to switch | |
1859 | to the target value the original one points to. */ | |
1860 | struct type *target_type = check_typedef (TYPE_TARGET_TYPE (type)); | |
1861 | ||
1862 | if (TYPE_CODE (target_type) == TYPE_CODE_ARRAY | |
1863 | || TYPE_CODE (target_type) == TYPE_CODE_STRING | |
1864 | || TYPE_CODE (target_type) == TYPE_CODE_FUNC) | |
1865 | { | |
1866 | arg1 = value_ind (arg1); | |
1867 | type = check_typedef (value_type (arg1)); | |
1868 | code = TYPE_CODE (type); | |
1869 | } | |
1870 | } | |
1871 | ||
c5aa993b | 1872 | switch (code) |
c906108c SS |
1873 | { |
1874 | case TYPE_CODE_ARRAY: | |
0b4e1325 WZ |
1875 | if (exp->elts[*pos].opcode == OP_F90_RANGE) |
1876 | return value_f90_subarray (arg1, exp, pos, noside); | |
1877 | else | |
1878 | goto multi_f77_subscript; | |
c906108c SS |
1879 | |
1880 | case TYPE_CODE_STRING: | |
0b4e1325 WZ |
1881 | if (exp->elts[*pos].opcode == OP_F90_RANGE) |
1882 | return value_f90_subarray (arg1, exp, pos, noside); | |
1883 | else | |
1884 | { | |
1885 | arg2 = evaluate_subexp_with_coercion (exp, pos, noside); | |
2497b498 | 1886 | return value_subscript (arg1, value_as_long (arg2)); |
0b4e1325 | 1887 | } |
c906108c SS |
1888 | |
1889 | case TYPE_CODE_PTR: | |
1890 | case TYPE_CODE_FUNC: | |
1891 | /* It's a function call. */ | |
1892 | /* Allocate arg vector, including space for the function to be | |
1893 | called in argvec[0] and a terminating NULL */ | |
f976f6d4 | 1894 | argvec = (struct value **) alloca (sizeof (struct value *) * (nargs + 2)); |
c906108c SS |
1895 | argvec[0] = arg1; |
1896 | tem = 1; | |
1897 | for (; tem <= nargs; tem++) | |
1898 | argvec[tem] = evaluate_subexp_with_coercion (exp, pos, noside); | |
c5aa993b | 1899 | argvec[tem] = 0; /* signal end of arglist */ |
c906108c SS |
1900 | goto do_call_it; |
1901 | ||
1902 | default: | |
8a3fe4f8 | 1903 | error (_("Cannot perform substring on this type")); |
c906108c SS |
1904 | } |
1905 | ||
c906108c SS |
1906 | case OP_COMPLEX: |
1907 | /* We have a complex number, There should be 2 floating | |
c5aa993b | 1908 | point numbers that compose it */ |
c806c55a | 1909 | (*pos) += 2; |
c906108c | 1910 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
c5aa993b | 1911 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
c906108c | 1912 | |
c806c55a | 1913 | return value_literal_complex (arg1, arg2, exp->elts[pc + 1].type); |
c906108c SS |
1914 | |
1915 | case STRUCTOP_STRUCT: | |
1916 | tem = longest_to_int (exp->elts[pc + 1].longconst); | |
1917 | (*pos) += 3 + BYTES_TO_EXP_ELEM (tem + 1); | |
1918 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
1919 | if (noside == EVAL_SKIP) | |
1920 | goto nosideret; | |
1921 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
df407dfe | 1922 | return value_zero (lookup_struct_elt_type (value_type (arg1), |
c906108c SS |
1923 | &exp->elts[pc + 2].string, |
1924 | 0), | |
1925 | lval_memory); | |
1926 | else | |
1927 | { | |
61051030 | 1928 | struct value *temp = arg1; |
d7f9d729 | 1929 | |
c906108c SS |
1930 | return value_struct_elt (&temp, NULL, &exp->elts[pc + 2].string, |
1931 | NULL, "structure"); | |
1932 | } | |
1933 | ||
1934 | case STRUCTOP_PTR: | |
1935 | tem = longest_to_int (exp->elts[pc + 1].longconst); | |
1936 | (*pos) += 3 + BYTES_TO_EXP_ELEM (tem + 1); | |
1937 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
1938 | if (noside == EVAL_SKIP) | |
1939 | goto nosideret; | |
070ad9f0 | 1940 | |
79afc5ef SW |
1941 | /* Check to see if operator '->' has been overloaded. If so replace |
1942 | arg1 with the value returned by evaluating operator->(). */ | |
1943 | while (unop_user_defined_p (op, arg1)) | |
1944 | { | |
1945 | volatile struct gdb_exception except; | |
1946 | struct value *value = NULL; | |
1947 | TRY_CATCH (except, RETURN_MASK_ERROR) | |
1948 | { | |
1949 | value = value_x_unop (arg1, op, noside); | |
1950 | } | |
1951 | ||
1952 | if (except.reason < 0) | |
1953 | { | |
1954 | if (except.error == NOT_FOUND_ERROR) | |
1955 | break; | |
1956 | else | |
1957 | throw_exception (except); | |
1958 | } | |
1959 | arg1 = value; | |
1960 | } | |
1961 | ||
070ad9f0 DB |
1962 | /* JYG: if print object is on we need to replace the base type |
1963 | with rtti type in order to continue on with successful | |
1964 | lookup of member / method only available in the rtti type. */ | |
1965 | { | |
df407dfe | 1966 | struct type *type = value_type (arg1); |
070ad9f0 DB |
1967 | struct type *real_type; |
1968 | int full, top, using_enc; | |
79a45b7d TT |
1969 | struct value_print_options opts; |
1970 | ||
1971 | get_user_print_options (&opts); | |
905e0470 PM |
1972 | if (opts.objectprint && TYPE_TARGET_TYPE(type) |
1973 | && (TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_CLASS)) | |
070ad9f0 DB |
1974 | { |
1975 | real_type = value_rtti_target_type (arg1, &full, &top, &using_enc); | |
1976 | if (real_type) | |
1977 | { | |
1978 | if (TYPE_CODE (type) == TYPE_CODE_PTR) | |
1979 | real_type = lookup_pointer_type (real_type); | |
1980 | else | |
1981 | real_type = lookup_reference_type (real_type); | |
1982 | ||
1983 | arg1 = value_cast (real_type, arg1); | |
1984 | } | |
1985 | } | |
1986 | } | |
1987 | ||
c906108c | 1988 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
df407dfe | 1989 | return value_zero (lookup_struct_elt_type (value_type (arg1), |
c906108c SS |
1990 | &exp->elts[pc + 2].string, |
1991 | 0), | |
1992 | lval_memory); | |
1993 | else | |
1994 | { | |
61051030 | 1995 | struct value *temp = arg1; |
d7f9d729 | 1996 | |
c906108c SS |
1997 | return value_struct_elt (&temp, NULL, &exp->elts[pc + 2].string, |
1998 | NULL, "structure pointer"); | |
1999 | } | |
2000 | ||
2001 | case STRUCTOP_MEMBER: | |
0d5de010 DJ |
2002 | case STRUCTOP_MPTR: |
2003 | if (op == STRUCTOP_MEMBER) | |
2004 | arg1 = evaluate_subexp_for_address (exp, pos, noside); | |
2005 | else | |
2006 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
2007 | ||
c906108c SS |
2008 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
2009 | ||
0d5de010 DJ |
2010 | if (noside == EVAL_SKIP) |
2011 | goto nosideret; | |
c5aa993b | 2012 | |
0d5de010 DJ |
2013 | type = check_typedef (value_type (arg2)); |
2014 | switch (TYPE_CODE (type)) | |
2015 | { | |
2016 | case TYPE_CODE_METHODPTR: | |
0d5de010 DJ |
2017 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
2018 | return value_zero (TYPE_TARGET_TYPE (type), not_lval); | |
2019 | else | |
2020 | { | |
2021 | arg2 = cplus_method_ptr_to_value (&arg1, arg2); | |
2022 | gdb_assert (TYPE_CODE (value_type (arg2)) == TYPE_CODE_PTR); | |
2023 | return value_ind (arg2); | |
2024 | } | |
c906108c | 2025 | |
0d5de010 DJ |
2026 | case TYPE_CODE_MEMBERPTR: |
2027 | /* Now, convert these values to an address. */ | |
2028 | arg1 = value_cast (lookup_pointer_type (TYPE_DOMAIN_TYPE (type)), | |
2029 | arg1); | |
c906108c | 2030 | |
0d5de010 | 2031 | mem_offset = value_as_long (arg2); |
c906108c | 2032 | |
0d5de010 DJ |
2033 | arg3 = value_from_pointer (lookup_pointer_type (TYPE_TARGET_TYPE (type)), |
2034 | value_as_long (arg1) + mem_offset); | |
2035 | return value_ind (arg3); | |
2036 | ||
2037 | default: | |
2038 | error (_("non-pointer-to-member value used in pointer-to-member construct")); | |
c5aa993b | 2039 | } |
c906108c | 2040 | |
072bba3b KS |
2041 | case TYPE_INSTANCE: |
2042 | nargs = longest_to_int (exp->elts[pc + 1].longconst); | |
2043 | arg_types = (struct type **) alloca (nargs * sizeof (struct type *)); | |
2044 | for (ix = 0; ix < nargs; ++ix) | |
2045 | arg_types[ix] = exp->elts[pc + 1 + ix + 1].type; | |
2046 | ||
2047 | expect_type = make_params (nargs, arg_types); | |
2048 | *(pos) += 3 + nargs; | |
2049 | arg1 = evaluate_subexp_standard (expect_type, exp, pos, noside); | |
2050 | xfree (TYPE_FIELDS (expect_type)); | |
2051 | xfree (TYPE_MAIN_TYPE (expect_type)); | |
2052 | xfree (expect_type); | |
2053 | return arg1; | |
2054 | ||
c906108c SS |
2055 | case BINOP_CONCAT: |
2056 | arg1 = evaluate_subexp_with_coercion (exp, pos, noside); | |
2057 | arg2 = evaluate_subexp_with_coercion (exp, pos, noside); | |
2058 | if (noside == EVAL_SKIP) | |
2059 | goto nosideret; | |
2060 | if (binop_user_defined_p (op, arg1, arg2)) | |
2061 | return value_x_binop (arg1, arg2, op, OP_NULL, noside); | |
2062 | else | |
2063 | return value_concat (arg1, arg2); | |
2064 | ||
2065 | case BINOP_ASSIGN: | |
2066 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
df407dfe | 2067 | arg2 = evaluate_subexp (value_type (arg1), exp, pos, noside); |
c906108c | 2068 | |
c906108c SS |
2069 | if (noside == EVAL_SKIP || noside == EVAL_AVOID_SIDE_EFFECTS) |
2070 | return arg1; | |
2071 | if (binop_user_defined_p (op, arg1, arg2)) | |
2072 | return value_x_binop (arg1, arg2, op, OP_NULL, noside); | |
2073 | else | |
2074 | return value_assign (arg1, arg2); | |
2075 | ||
2076 | case BINOP_ASSIGN_MODIFY: | |
2077 | (*pos) += 2; | |
2078 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
df407dfe | 2079 | arg2 = evaluate_subexp (value_type (arg1), exp, pos, noside); |
c906108c SS |
2080 | if (noside == EVAL_SKIP || noside == EVAL_AVOID_SIDE_EFFECTS) |
2081 | return arg1; | |
2082 | op = exp->elts[pc + 1].opcode; | |
2083 | if (binop_user_defined_p (op, arg1, arg2)) | |
2084 | return value_x_binop (arg1, arg2, BINOP_ASSIGN_MODIFY, op, noside); | |
cc73bb8c TT |
2085 | else if (op == BINOP_ADD && ptrmath_type_p (exp->language_defn, |
2086 | value_type (arg1)) | |
2497b498 UW |
2087 | && is_integral_type (value_type (arg2))) |
2088 | arg2 = value_ptradd (arg1, value_as_long (arg2)); | |
cc73bb8c TT |
2089 | else if (op == BINOP_SUB && ptrmath_type_p (exp->language_defn, |
2090 | value_type (arg1)) | |
2497b498 UW |
2091 | && is_integral_type (value_type (arg2))) |
2092 | arg2 = value_ptradd (arg1, - value_as_long (arg2)); | |
c906108c | 2093 | else |
f44316fa UW |
2094 | { |
2095 | struct value *tmp = arg1; | |
2096 | ||
2097 | /* For shift and integer exponentiation operations, | |
2098 | only promote the first argument. */ | |
2099 | if ((op == BINOP_LSH || op == BINOP_RSH || op == BINOP_EXP) | |
2100 | && is_integral_type (value_type (arg2))) | |
2101 | unop_promote (exp->language_defn, exp->gdbarch, &tmp); | |
2102 | else | |
2103 | binop_promote (exp->language_defn, exp->gdbarch, &tmp, &arg2); | |
2104 | ||
2105 | arg2 = value_binop (tmp, arg2, op); | |
2106 | } | |
c906108c SS |
2107 | return value_assign (arg1, arg2); |
2108 | ||
2109 | case BINOP_ADD: | |
2110 | arg1 = evaluate_subexp_with_coercion (exp, pos, noside); | |
2111 | arg2 = evaluate_subexp_with_coercion (exp, pos, noside); | |
2112 | if (noside == EVAL_SKIP) | |
2113 | goto nosideret; | |
2114 | if (binop_user_defined_p (op, arg1, arg2)) | |
2115 | return value_x_binop (arg1, arg2, op, OP_NULL, noside); | |
cc73bb8c | 2116 | else if (ptrmath_type_p (exp->language_defn, value_type (arg1)) |
2497b498 UW |
2117 | && is_integral_type (value_type (arg2))) |
2118 | return value_ptradd (arg1, value_as_long (arg2)); | |
cc73bb8c | 2119 | else if (ptrmath_type_p (exp->language_defn, value_type (arg2)) |
2497b498 UW |
2120 | && is_integral_type (value_type (arg1))) |
2121 | return value_ptradd (arg2, value_as_long (arg1)); | |
c906108c | 2122 | else |
f44316fa UW |
2123 | { |
2124 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); | |
2125 | return value_binop (arg1, arg2, BINOP_ADD); | |
2126 | } | |
c906108c SS |
2127 | |
2128 | case BINOP_SUB: | |
2129 | arg1 = evaluate_subexp_with_coercion (exp, pos, noside); | |
2130 | arg2 = evaluate_subexp_with_coercion (exp, pos, noside); | |
2131 | if (noside == EVAL_SKIP) | |
2132 | goto nosideret; | |
2133 | if (binop_user_defined_p (op, arg1, arg2)) | |
2134 | return value_x_binop (arg1, arg2, op, OP_NULL, noside); | |
cc73bb8c TT |
2135 | else if (ptrmath_type_p (exp->language_defn, value_type (arg1)) |
2136 | && ptrmath_type_p (exp->language_defn, value_type (arg2))) | |
89eef114 | 2137 | { |
2497b498 UW |
2138 | /* FIXME -- should be ptrdiff_t */ |
2139 | type = builtin_type (exp->gdbarch)->builtin_long; | |
2140 | return value_from_longest (type, value_ptrdiff (arg1, arg2)); | |
89eef114 | 2141 | } |
cc73bb8c | 2142 | else if (ptrmath_type_p (exp->language_defn, value_type (arg1)) |
2497b498 UW |
2143 | && is_integral_type (value_type (arg2))) |
2144 | return value_ptradd (arg1, - value_as_long (arg2)); | |
c906108c | 2145 | else |
f44316fa UW |
2146 | { |
2147 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); | |
2148 | return value_binop (arg1, arg2, BINOP_SUB); | |
2149 | } | |
c906108c | 2150 | |
bd49c137 | 2151 | case BINOP_EXP: |
c906108c SS |
2152 | case BINOP_MUL: |
2153 | case BINOP_DIV: | |
9b3442ee | 2154 | case BINOP_INTDIV: |
c906108c SS |
2155 | case BINOP_REM: |
2156 | case BINOP_MOD: | |
2157 | case BINOP_LSH: | |
2158 | case BINOP_RSH: | |
2159 | case BINOP_BITWISE_AND: | |
2160 | case BINOP_BITWISE_IOR: | |
2161 | case BINOP_BITWISE_XOR: | |
2162 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
2163 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
2164 | if (noside == EVAL_SKIP) | |
2165 | goto nosideret; | |
2166 | if (binop_user_defined_p (op, arg1, arg2)) | |
2167 | return value_x_binop (arg1, arg2, op, OP_NULL, noside); | |
c906108c | 2168 | else |
301f0ecf DE |
2169 | { |
2170 | /* If EVAL_AVOID_SIDE_EFFECTS and we're dividing by zero, | |
2171 | fudge arg2 to avoid division-by-zero, the caller is | |
2172 | (theoretically) only looking for the type of the result. */ | |
2173 | if (noside == EVAL_AVOID_SIDE_EFFECTS | |
2174 | /* ??? Do we really want to test for BINOP_MOD here? | |
2175 | The implementation of value_binop gives it a well-defined | |
2176 | value. */ | |
2177 | && (op == BINOP_DIV | |
2178 | || op == BINOP_INTDIV | |
2179 | || op == BINOP_REM | |
2180 | || op == BINOP_MOD) | |
2181 | && value_logical_not (arg2)) | |
2182 | { | |
2183 | struct value *v_one, *retval; | |
2184 | ||
2185 | v_one = value_one (value_type (arg2), not_lval); | |
f44316fa | 2186 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &v_one); |
301f0ecf DE |
2187 | retval = value_binop (arg1, v_one, op); |
2188 | return retval; | |
2189 | } | |
2190 | else | |
f44316fa UW |
2191 | { |
2192 | /* For shift and integer exponentiation operations, | |
2193 | only promote the first argument. */ | |
2194 | if ((op == BINOP_LSH || op == BINOP_RSH || op == BINOP_EXP) | |
2195 | && is_integral_type (value_type (arg2))) | |
2196 | unop_promote (exp->language_defn, exp->gdbarch, &arg1); | |
2197 | else | |
2198 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); | |
2199 | ||
2200 | return value_binop (arg1, arg2, op); | |
2201 | } | |
301f0ecf | 2202 | } |
c906108c SS |
2203 | |
2204 | case BINOP_RANGE: | |
2205 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
2206 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
2207 | if (noside == EVAL_SKIP) | |
2208 | goto nosideret; | |
8a3fe4f8 | 2209 | error (_("':' operator used in invalid context")); |
c906108c SS |
2210 | |
2211 | case BINOP_SUBSCRIPT: | |
74de6778 TT |
2212 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
2213 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
c906108c SS |
2214 | if (noside == EVAL_SKIP) |
2215 | goto nosideret; | |
2216 | if (binop_user_defined_p (op, arg1, arg2)) | |
2217 | return value_x_binop (arg1, arg2, op, OP_NULL, noside); | |
2218 | else | |
c5aa993b | 2219 | { |
c906108c SS |
2220 | /* If the user attempts to subscript something that is not an |
2221 | array or pointer type (like a plain int variable for example), | |
2222 | then report this as an error. */ | |
2223 | ||
994b9211 | 2224 | arg1 = coerce_ref (arg1); |
df407dfe | 2225 | type = check_typedef (value_type (arg1)); |
c906108c SS |
2226 | if (TYPE_CODE (type) != TYPE_CODE_ARRAY |
2227 | && TYPE_CODE (type) != TYPE_CODE_PTR) | |
2228 | { | |
2229 | if (TYPE_NAME (type)) | |
8a3fe4f8 | 2230 | error (_("cannot subscript something of type `%s'"), |
c906108c SS |
2231 | TYPE_NAME (type)); |
2232 | else | |
8a3fe4f8 | 2233 | error (_("cannot subscript requested type")); |
c906108c SS |
2234 | } |
2235 | ||
2236 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
2237 | return value_zero (TYPE_TARGET_TYPE (type), VALUE_LVAL (arg1)); | |
2238 | else | |
2497b498 | 2239 | return value_subscript (arg1, value_as_long (arg2)); |
c5aa993b | 2240 | } |
c906108c SS |
2241 | |
2242 | case BINOP_IN: | |
2243 | arg1 = evaluate_subexp_with_coercion (exp, pos, noside); | |
2244 | arg2 = evaluate_subexp_with_coercion (exp, pos, noside); | |
2245 | if (noside == EVAL_SKIP) | |
2246 | goto nosideret; | |
fbb06eb1 UW |
2247 | type = language_bool_type (exp->language_defn, exp->gdbarch); |
2248 | return value_from_longest (type, (LONGEST) value_in (arg1, arg2)); | |
c5aa993b | 2249 | |
c906108c SS |
2250 | case MULTI_SUBSCRIPT: |
2251 | (*pos) += 2; | |
2252 | nargs = longest_to_int (exp->elts[pc + 1].longconst); | |
2253 | arg1 = evaluate_subexp_with_coercion (exp, pos, noside); | |
2254 | while (nargs-- > 0) | |
2255 | { | |
2256 | arg2 = evaluate_subexp_with_coercion (exp, pos, noside); | |
2257 | /* FIXME: EVAL_SKIP handling may not be correct. */ | |
2258 | if (noside == EVAL_SKIP) | |
2259 | { | |
2260 | if (nargs > 0) | |
2261 | { | |
2262 | continue; | |
2263 | } | |
2264 | else | |
2265 | { | |
2266 | goto nosideret; | |
2267 | } | |
2268 | } | |
2269 | /* FIXME: EVAL_AVOID_SIDE_EFFECTS handling may not be correct. */ | |
2270 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
2271 | { | |
2272 | /* If the user attempts to subscript something that has no target | |
c5aa993b JM |
2273 | type (like a plain int variable for example), then report this |
2274 | as an error. */ | |
2275 | ||
df407dfe | 2276 | type = TYPE_TARGET_TYPE (check_typedef (value_type (arg1))); |
c906108c SS |
2277 | if (type != NULL) |
2278 | { | |
2279 | arg1 = value_zero (type, VALUE_LVAL (arg1)); | |
2280 | noside = EVAL_SKIP; | |
2281 | continue; | |
2282 | } | |
2283 | else | |
2284 | { | |
8a3fe4f8 | 2285 | error (_("cannot subscript something of type `%s'"), |
df407dfe | 2286 | TYPE_NAME (value_type (arg1))); |
c906108c SS |
2287 | } |
2288 | } | |
c5aa993b | 2289 | |
c906108c SS |
2290 | if (binop_user_defined_p (op, arg1, arg2)) |
2291 | { | |
2292 | arg1 = value_x_binop (arg1, arg2, op, OP_NULL, noside); | |
2293 | } | |
2294 | else | |
2295 | { | |
afc05acb UW |
2296 | arg1 = coerce_ref (arg1); |
2297 | type = check_typedef (value_type (arg1)); | |
2298 | ||
2299 | switch (TYPE_CODE (type)) | |
2300 | { | |
2301 | case TYPE_CODE_PTR: | |
2302 | case TYPE_CODE_ARRAY: | |
2303 | case TYPE_CODE_STRING: | |
2497b498 | 2304 | arg1 = value_subscript (arg1, value_as_long (arg2)); |
afc05acb UW |
2305 | break; |
2306 | ||
2307 | case TYPE_CODE_BITSTRING: | |
fbb06eb1 | 2308 | type = language_bool_type (exp->language_defn, exp->gdbarch); |
2497b498 UW |
2309 | arg1 = value_bitstring_subscript (type, arg1, |
2310 | value_as_long (arg2)); | |
afc05acb UW |
2311 | break; |
2312 | ||
2313 | default: | |
2314 | if (TYPE_NAME (type)) | |
2315 | error (_("cannot subscript something of type `%s'"), | |
2316 | TYPE_NAME (type)); | |
2317 | else | |
2318 | error (_("cannot subscript requested type")); | |
2319 | } | |
c906108c SS |
2320 | } |
2321 | } | |
2322 | return (arg1); | |
2323 | ||
2324 | multi_f77_subscript: | |
c5aa993b | 2325 | { |
7ca2d3a3 DL |
2326 | int subscript_array[MAX_FORTRAN_DIMS]; |
2327 | int array_size_array[MAX_FORTRAN_DIMS]; | |
c5aa993b JM |
2328 | int ndimensions = 1, i; |
2329 | struct type *tmp_type; | |
2330 | int offset_item; /* The array offset where the item lives */ | |
c906108c SS |
2331 | |
2332 | if (nargs > MAX_FORTRAN_DIMS) | |
8a3fe4f8 | 2333 | error (_("Too many subscripts for F77 (%d Max)"), MAX_FORTRAN_DIMS); |
c906108c | 2334 | |
df407dfe | 2335 | tmp_type = check_typedef (value_type (arg1)); |
c906108c SS |
2336 | ndimensions = calc_f77_array_dims (type); |
2337 | ||
2338 | if (nargs != ndimensions) | |
8a3fe4f8 | 2339 | error (_("Wrong number of subscripts")); |
c906108c | 2340 | |
1c9f699c DJ |
2341 | gdb_assert (nargs > 0); |
2342 | ||
c906108c | 2343 | /* Now that we know we have a legal array subscript expression |
c5aa993b | 2344 | let us actually find out where this element exists in the array. */ |
c906108c | 2345 | |
c5aa993b | 2346 | offset_item = 0; |
7ca2d3a3 DL |
2347 | /* Take array indices left to right */ |
2348 | for (i = 0; i < nargs; i++) | |
c906108c | 2349 | { |
c5aa993b | 2350 | /* Evaluate each subscript, It must be a legal integer in F77 */ |
c906108c SS |
2351 | arg2 = evaluate_subexp_with_coercion (exp, pos, noside); |
2352 | ||
c5aa993b | 2353 | /* Fill in the subscript and array size arrays */ |
c906108c SS |
2354 | |
2355 | subscript_array[i] = value_as_long (arg2); | |
7ca2d3a3 | 2356 | } |
c5aa993b | 2357 | |
7ca2d3a3 DL |
2358 | /* Internal type of array is arranged right to left */ |
2359 | for (i = 0; i < nargs; i++) | |
2360 | { | |
d78df370 JK |
2361 | upper = f77_get_upperbound (tmp_type); |
2362 | lower = f77_get_lowerbound (tmp_type); | |
c906108c | 2363 | |
7ca2d3a3 | 2364 | array_size_array[nargs - i - 1] = upper - lower + 1; |
c5aa993b JM |
2365 | |
2366 | /* Zero-normalize subscripts so that offsetting will work. */ | |
2367 | ||
7ca2d3a3 | 2368 | subscript_array[nargs - i - 1] -= lower; |
c906108c SS |
2369 | |
2370 | /* If we are at the bottom of a multidimensional | |
2371 | array type then keep a ptr to the last ARRAY | |
2372 | type around for use when calling value_subscript() | |
2373 | below. This is done because we pretend to value_subscript | |
2374 | that we actually have a one-dimensional array | |
2375 | of base element type that we apply a simple | |
c5aa993b | 2376 | offset to. */ |
c906108c | 2377 | |
7ca2d3a3 | 2378 | if (i < nargs - 1) |
c5aa993b | 2379 | tmp_type = check_typedef (TYPE_TARGET_TYPE (tmp_type)); |
c906108c SS |
2380 | } |
2381 | ||
2382 | /* Now let us calculate the offset for this item */ | |
2383 | ||
7ca2d3a3 | 2384 | offset_item = subscript_array[ndimensions - 1]; |
c5aa993b | 2385 | |
7ca2d3a3 | 2386 | for (i = ndimensions - 1; i > 0; --i) |
c5aa993b | 2387 | offset_item = |
7ca2d3a3 | 2388 | array_size_array[i - 1] * offset_item + subscript_array[i - 1]; |
c906108c | 2389 | |
c906108c SS |
2390 | /* Let us now play a dirty trick: we will take arg1 |
2391 | which is a value node pointing to the topmost level | |
2392 | of the multidimensional array-set and pretend | |
2393 | that it is actually a array of the final element | |
2394 | type, this will ensure that value_subscript() | |
2395 | returns the correct type value */ | |
2396 | ||
04624583 | 2397 | deprecated_set_value_type (arg1, tmp_type); |
2497b498 | 2398 | return value_subscripted_rvalue (arg1, offset_item, 0); |
c906108c SS |
2399 | } |
2400 | ||
2401 | case BINOP_LOGICAL_AND: | |
2402 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
2403 | if (noside == EVAL_SKIP) | |
2404 | { | |
2405 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
2406 | goto nosideret; | |
2407 | } | |
c5aa993b | 2408 | |
c906108c SS |
2409 | oldpos = *pos; |
2410 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, EVAL_AVOID_SIDE_EFFECTS); | |
2411 | *pos = oldpos; | |
c5aa993b JM |
2412 | |
2413 | if (binop_user_defined_p (op, arg1, arg2)) | |
c906108c SS |
2414 | { |
2415 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
2416 | return value_x_binop (arg1, arg2, op, OP_NULL, noside); | |
2417 | } | |
2418 | else | |
2419 | { | |
2420 | tem = value_logical_not (arg1); | |
2421 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, | |
2422 | (tem ? EVAL_SKIP : noside)); | |
fbb06eb1 UW |
2423 | type = language_bool_type (exp->language_defn, exp->gdbarch); |
2424 | return value_from_longest (type, | |
c5aa993b | 2425 | (LONGEST) (!tem && !value_logical_not (arg2))); |
c906108c SS |
2426 | } |
2427 | ||
2428 | case BINOP_LOGICAL_OR: | |
2429 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
2430 | if (noside == EVAL_SKIP) | |
2431 | { | |
2432 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
2433 | goto nosideret; | |
2434 | } | |
c5aa993b | 2435 | |
c906108c SS |
2436 | oldpos = *pos; |
2437 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, EVAL_AVOID_SIDE_EFFECTS); | |
2438 | *pos = oldpos; | |
c5aa993b JM |
2439 | |
2440 | if (binop_user_defined_p (op, arg1, arg2)) | |
c906108c SS |
2441 | { |
2442 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
2443 | return value_x_binop (arg1, arg2, op, OP_NULL, noside); | |
2444 | } | |
2445 | else | |
2446 | { | |
2447 | tem = value_logical_not (arg1); | |
2448 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, | |
2449 | (!tem ? EVAL_SKIP : noside)); | |
fbb06eb1 UW |
2450 | type = language_bool_type (exp->language_defn, exp->gdbarch); |
2451 | return value_from_longest (type, | |
c5aa993b | 2452 | (LONGEST) (!tem || !value_logical_not (arg2))); |
c906108c SS |
2453 | } |
2454 | ||
2455 | case BINOP_EQUAL: | |
2456 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
df407dfe | 2457 | arg2 = evaluate_subexp (value_type (arg1), exp, pos, noside); |
c906108c SS |
2458 | if (noside == EVAL_SKIP) |
2459 | goto nosideret; | |
2460 | if (binop_user_defined_p (op, arg1, arg2)) | |
2461 | { | |
2462 | return value_x_binop (arg1, arg2, op, OP_NULL, noside); | |
2463 | } | |
2464 | else | |
2465 | { | |
f44316fa | 2466 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); |
c906108c | 2467 | tem = value_equal (arg1, arg2); |
fbb06eb1 UW |
2468 | type = language_bool_type (exp->language_defn, exp->gdbarch); |
2469 | return value_from_longest (type, (LONGEST) tem); | |
c906108c SS |
2470 | } |
2471 | ||
2472 | case BINOP_NOTEQUAL: | |
2473 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
df407dfe | 2474 | arg2 = evaluate_subexp (value_type (arg1), exp, pos, noside); |
c906108c SS |
2475 | if (noside == EVAL_SKIP) |
2476 | goto nosideret; | |
2477 | if (binop_user_defined_p (op, arg1, arg2)) | |
2478 | { | |
2479 | return value_x_binop (arg1, arg2, op, OP_NULL, noside); | |
2480 | } | |
2481 | else | |
2482 | { | |
f44316fa | 2483 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); |
c906108c | 2484 | tem = value_equal (arg1, arg2); |
fbb06eb1 UW |
2485 | type = language_bool_type (exp->language_defn, exp->gdbarch); |
2486 | return value_from_longest (type, (LONGEST) ! tem); | |
c906108c SS |
2487 | } |
2488 | ||
2489 | case BINOP_LESS: | |
2490 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
df407dfe | 2491 | arg2 = evaluate_subexp (value_type (arg1), exp, pos, noside); |
c906108c SS |
2492 | if (noside == EVAL_SKIP) |
2493 | goto nosideret; | |
2494 | if (binop_user_defined_p (op, arg1, arg2)) | |
2495 | { | |
2496 | return value_x_binop (arg1, arg2, op, OP_NULL, noside); | |
2497 | } | |
2498 | else | |
2499 | { | |
f44316fa | 2500 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); |
c906108c | 2501 | tem = value_less (arg1, arg2); |
fbb06eb1 UW |
2502 | type = language_bool_type (exp->language_defn, exp->gdbarch); |
2503 | return value_from_longest (type, (LONGEST) tem); | |
c906108c SS |
2504 | } |
2505 | ||
2506 | case BINOP_GTR: | |
2507 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
df407dfe | 2508 | arg2 = evaluate_subexp (value_type (arg1), exp, pos, noside); |
c906108c SS |
2509 | if (noside == EVAL_SKIP) |
2510 | goto nosideret; | |
2511 | if (binop_user_defined_p (op, arg1, arg2)) | |
2512 | { | |
2513 | return value_x_binop (arg1, arg2, op, OP_NULL, noside); | |
2514 | } | |
2515 | else | |
2516 | { | |
f44316fa | 2517 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); |
c906108c | 2518 | tem = value_less (arg2, arg1); |
fbb06eb1 UW |
2519 | type = language_bool_type (exp->language_defn, exp->gdbarch); |
2520 | return value_from_longest (type, (LONGEST) tem); | |
c906108c SS |
2521 | } |
2522 | ||
2523 | case BINOP_GEQ: | |
2524 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
df407dfe | 2525 | arg2 = evaluate_subexp (value_type (arg1), exp, pos, noside); |
c906108c SS |
2526 | if (noside == EVAL_SKIP) |
2527 | goto nosideret; | |
2528 | if (binop_user_defined_p (op, arg1, arg2)) | |
2529 | { | |
2530 | return value_x_binop (arg1, arg2, op, OP_NULL, noside); | |
2531 | } | |
2532 | else | |
2533 | { | |
f44316fa | 2534 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); |
c906108c | 2535 | tem = value_less (arg2, arg1) || value_equal (arg1, arg2); |
fbb06eb1 UW |
2536 | type = language_bool_type (exp->language_defn, exp->gdbarch); |
2537 | return value_from_longest (type, (LONGEST) tem); | |
c906108c SS |
2538 | } |
2539 | ||
2540 | case BINOP_LEQ: | |
2541 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
df407dfe | 2542 | arg2 = evaluate_subexp (value_type (arg1), exp, pos, noside); |
c906108c SS |
2543 | if (noside == EVAL_SKIP) |
2544 | goto nosideret; | |
2545 | if (binop_user_defined_p (op, arg1, arg2)) | |
2546 | { | |
2547 | return value_x_binop (arg1, arg2, op, OP_NULL, noside); | |
2548 | } | |
c5aa993b | 2549 | else |
c906108c | 2550 | { |
f44316fa | 2551 | binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2); |
c906108c | 2552 | tem = value_less (arg1, arg2) || value_equal (arg1, arg2); |
fbb06eb1 UW |
2553 | type = language_bool_type (exp->language_defn, exp->gdbarch); |
2554 | return value_from_longest (type, (LONGEST) tem); | |
c906108c SS |
2555 | } |
2556 | ||
2557 | case BINOP_REPEAT: | |
2558 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
2559 | arg2 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
2560 | if (noside == EVAL_SKIP) | |
2561 | goto nosideret; | |
df407dfe | 2562 | type = check_typedef (value_type (arg2)); |
c906108c | 2563 | if (TYPE_CODE (type) != TYPE_CODE_INT) |
8a3fe4f8 | 2564 | error (_("Non-integral right operand for \"@\" operator.")); |
c906108c SS |
2565 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
2566 | { | |
df407dfe | 2567 | return allocate_repeat_value (value_type (arg1), |
c5aa993b | 2568 | longest_to_int (value_as_long (arg2))); |
c906108c SS |
2569 | } |
2570 | else | |
2571 | return value_repeat (arg1, longest_to_int (value_as_long (arg2))); | |
2572 | ||
2573 | case BINOP_COMMA: | |
2574 | evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
2575 | return evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
2576 | ||
36e9969c NS |
2577 | case UNOP_PLUS: |
2578 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
2579 | if (noside == EVAL_SKIP) | |
2580 | goto nosideret; | |
2581 | if (unop_user_defined_p (op, arg1)) | |
2582 | return value_x_unop (arg1, op, noside); | |
2583 | else | |
f44316fa UW |
2584 | { |
2585 | unop_promote (exp->language_defn, exp->gdbarch, &arg1); | |
2586 | return value_pos (arg1); | |
2587 | } | |
36e9969c | 2588 | |
c906108c SS |
2589 | case UNOP_NEG: |
2590 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
2591 | if (noside == EVAL_SKIP) | |
2592 | goto nosideret; | |
2593 | if (unop_user_defined_p (op, arg1)) | |
2594 | return value_x_unop (arg1, op, noside); | |
2595 | else | |
f44316fa UW |
2596 | { |
2597 | unop_promote (exp->language_defn, exp->gdbarch, &arg1); | |
2598 | return value_neg (arg1); | |
2599 | } | |
c906108c SS |
2600 | |
2601 | case UNOP_COMPLEMENT: | |
2602 | /* C++: check for and handle destructor names. */ | |
2603 | op = exp->elts[*pos].opcode; | |
2604 | ||
2605 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
2606 | if (noside == EVAL_SKIP) | |
2607 | goto nosideret; | |
2608 | if (unop_user_defined_p (UNOP_COMPLEMENT, arg1)) | |
2609 | return value_x_unop (arg1, UNOP_COMPLEMENT, noside); | |
2610 | else | |
f44316fa UW |
2611 | { |
2612 | unop_promote (exp->language_defn, exp->gdbarch, &arg1); | |
2613 | return value_complement (arg1); | |
2614 | } | |
c906108c SS |
2615 | |
2616 | case UNOP_LOGICAL_NOT: | |
2617 | arg1 = evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
2618 | if (noside == EVAL_SKIP) | |
2619 | goto nosideret; | |
2620 | if (unop_user_defined_p (op, arg1)) | |
2621 | return value_x_unop (arg1, op, noside); | |
2622 | else | |
fbb06eb1 UW |
2623 | { |
2624 | type = language_bool_type (exp->language_defn, exp->gdbarch); | |
2625 | return value_from_longest (type, (LONGEST) value_logical_not (arg1)); | |
2626 | } | |
c906108c SS |
2627 | |
2628 | case UNOP_IND: | |
2629 | if (expect_type && TYPE_CODE (expect_type) == TYPE_CODE_PTR) | |
c5aa993b | 2630 | expect_type = TYPE_TARGET_TYPE (check_typedef (expect_type)); |
c906108c | 2631 | arg1 = evaluate_subexp (expect_type, exp, pos, noside); |
0d5de010 DJ |
2632 | type = check_typedef (value_type (arg1)); |
2633 | if (TYPE_CODE (type) == TYPE_CODE_METHODPTR | |
2634 | || TYPE_CODE (type) == TYPE_CODE_MEMBERPTR) | |
8a3fe4f8 | 2635 | error (_("Attempt to dereference pointer to member without an object")); |
c906108c SS |
2636 | if (noside == EVAL_SKIP) |
2637 | goto nosideret; | |
2638 | if (unop_user_defined_p (op, arg1)) | |
2639 | return value_x_unop (arg1, op, noside); | |
2640 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
2641 | { | |
df407dfe | 2642 | type = check_typedef (value_type (arg1)); |
c906108c SS |
2643 | if (TYPE_CODE (type) == TYPE_CODE_PTR |
2644 | || TYPE_CODE (type) == TYPE_CODE_REF | |
c5aa993b | 2645 | /* In C you can dereference an array to get the 1st elt. */ |
c906108c | 2646 | || TYPE_CODE (type) == TYPE_CODE_ARRAY |
c5aa993b | 2647 | ) |
c906108c SS |
2648 | return value_zero (TYPE_TARGET_TYPE (type), |
2649 | lval_memory); | |
2650 | else if (TYPE_CODE (type) == TYPE_CODE_INT) | |
2651 | /* GDB allows dereferencing an int. */ | |
22fe0fbb UW |
2652 | return value_zero (builtin_type (exp->gdbarch)->builtin_int, |
2653 | lval_memory); | |
c906108c | 2654 | else |
8a3fe4f8 | 2655 | error (_("Attempt to take contents of a non-pointer value.")); |
c906108c | 2656 | } |
22fe0fbb UW |
2657 | |
2658 | /* Allow * on an integer so we can cast it to whatever we want. | |
2659 | This returns an int, which seems like the most C-like thing to | |
2660 | do. "long long" variables are rare enough that | |
2661 | BUILTIN_TYPE_LONGEST would seem to be a mistake. */ | |
2662 | if (TYPE_CODE (type) == TYPE_CODE_INT) | |
2663 | return value_at_lazy (builtin_type (exp->gdbarch)->builtin_int, | |
2664 | (CORE_ADDR) value_as_address (arg1)); | |
c906108c SS |
2665 | return value_ind (arg1); |
2666 | ||
2667 | case UNOP_ADDR: | |
2668 | /* C++: check for and handle pointer to members. */ | |
c5aa993b | 2669 | |
c906108c SS |
2670 | op = exp->elts[*pos].opcode; |
2671 | ||
2672 | if (noside == EVAL_SKIP) | |
2673 | { | |
0d5de010 | 2674 | evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP); |
c906108c SS |
2675 | goto nosideret; |
2676 | } | |
c5aa993b JM |
2677 | else |
2678 | { | |
61051030 | 2679 | struct value *retvalp = evaluate_subexp_for_address (exp, pos, noside); |
d7f9d729 | 2680 | |
c5aa993b JM |
2681 | return retvalp; |
2682 | } | |
2683 | ||
c906108c SS |
2684 | case UNOP_SIZEOF: |
2685 | if (noside == EVAL_SKIP) | |
2686 | { | |
2687 | evaluate_subexp (NULL_TYPE, exp, pos, EVAL_SKIP); | |
2688 | goto nosideret; | |
2689 | } | |
2690 | return evaluate_subexp_for_sizeof (exp, pos); | |
2691 | ||
2692 | case UNOP_CAST: | |
2693 | (*pos) += 2; | |
2694 | type = exp->elts[pc + 1].type; | |
2695 | arg1 = evaluate_subexp (type, exp, pos, noside); | |
2696 | if (noside == EVAL_SKIP) | |
2697 | goto nosideret; | |
df407dfe | 2698 | if (type != value_type (arg1)) |
c906108c SS |
2699 | arg1 = value_cast (type, arg1); |
2700 | return arg1; | |
2701 | ||
4e8f195d TT |
2702 | case UNOP_DYNAMIC_CAST: |
2703 | (*pos) += 2; | |
2704 | type = exp->elts[pc + 1].type; | |
2705 | arg1 = evaluate_subexp (type, exp, pos, noside); | |
2706 | if (noside == EVAL_SKIP) | |
2707 | goto nosideret; | |
2708 | return value_dynamic_cast (type, arg1); | |
2709 | ||
2710 | case UNOP_REINTERPRET_CAST: | |
2711 | (*pos) += 2; | |
2712 | type = exp->elts[pc + 1].type; | |
2713 | arg1 = evaluate_subexp (type, exp, pos, noside); | |
2714 | if (noside == EVAL_SKIP) | |
2715 | goto nosideret; | |
2716 | return value_reinterpret_cast (type, arg1); | |
2717 | ||
c906108c SS |
2718 | case UNOP_MEMVAL: |
2719 | (*pos) += 2; | |
2720 | arg1 = evaluate_subexp (expect_type, exp, pos, noside); | |
2721 | if (noside == EVAL_SKIP) | |
2722 | goto nosideret; | |
2723 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
2724 | return value_zero (exp->elts[pc + 1].type, lval_memory); | |
2725 | else | |
2726 | return value_at_lazy (exp->elts[pc + 1].type, | |
00a4c844 | 2727 | value_as_address (arg1)); |
c906108c | 2728 | |
9e35dae4 DJ |
2729 | case UNOP_MEMVAL_TLS: |
2730 | (*pos) += 3; | |
2731 | arg1 = evaluate_subexp (expect_type, exp, pos, noside); | |
2732 | if (noside == EVAL_SKIP) | |
2733 | goto nosideret; | |
2734 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
2735 | return value_zero (exp->elts[pc + 2].type, lval_memory); | |
2736 | else | |
2737 | { | |
2738 | CORE_ADDR tls_addr; | |
d7f9d729 | 2739 | |
9e35dae4 DJ |
2740 | tls_addr = target_translate_tls_address (exp->elts[pc + 1].objfile, |
2741 | value_as_address (arg1)); | |
2742 | return value_at_lazy (exp->elts[pc + 2].type, tls_addr); | |
2743 | } | |
2744 | ||
c906108c SS |
2745 | case UNOP_PREINCREMENT: |
2746 | arg1 = evaluate_subexp (expect_type, exp, pos, noside); | |
2747 | if (noside == EVAL_SKIP || noside == EVAL_AVOID_SIDE_EFFECTS) | |
2748 | return arg1; | |
2749 | else if (unop_user_defined_p (op, arg1)) | |
2750 | { | |
2751 | return value_x_unop (arg1, op, noside); | |
2752 | } | |
2753 | else | |
2754 | { | |
cc73bb8c | 2755 | if (ptrmath_type_p (exp->language_defn, value_type (arg1))) |
2497b498 | 2756 | arg2 = value_ptradd (arg1, 1); |
89eef114 | 2757 | else |
f44316fa UW |
2758 | { |
2759 | struct value *tmp = arg1; | |
d7f9d729 | 2760 | |
2497b498 | 2761 | arg2 = value_one (value_type (arg1), not_lval); |
f44316fa UW |
2762 | binop_promote (exp->language_defn, exp->gdbarch, &tmp, &arg2); |
2763 | arg2 = value_binop (tmp, arg2, BINOP_ADD); | |
2764 | } | |
89eef114 | 2765 | |
c906108c SS |
2766 | return value_assign (arg1, arg2); |
2767 | } | |
2768 | ||
2769 | case UNOP_PREDECREMENT: | |
2770 | arg1 = evaluate_subexp (expect_type, exp, pos, noside); | |
2771 | if (noside == EVAL_SKIP || noside == EVAL_AVOID_SIDE_EFFECTS) | |
2772 | return arg1; | |
2773 | else if (unop_user_defined_p (op, arg1)) | |
2774 | { | |
2775 | return value_x_unop (arg1, op, noside); | |
2776 | } | |
2777 | else | |
2778 | { | |
cc73bb8c | 2779 | if (ptrmath_type_p (exp->language_defn, value_type (arg1))) |
2497b498 | 2780 | arg2 = value_ptradd (arg1, -1); |
89eef114 | 2781 | else |
f44316fa UW |
2782 | { |
2783 | struct value *tmp = arg1; | |
d7f9d729 | 2784 | |
2497b498 | 2785 | arg2 = value_one (value_type (arg1), not_lval); |
f44316fa UW |
2786 | binop_promote (exp->language_defn, exp->gdbarch, &tmp, &arg2); |
2787 | arg2 = value_binop (tmp, arg2, BINOP_SUB); | |
2788 | } | |
89eef114 | 2789 | |
c906108c SS |
2790 | return value_assign (arg1, arg2); |
2791 | } | |
2792 | ||
2793 | case UNOP_POSTINCREMENT: | |
2794 | arg1 = evaluate_subexp (expect_type, exp, pos, noside); | |
2795 | if (noside == EVAL_SKIP || noside == EVAL_AVOID_SIDE_EFFECTS) | |
2796 | return arg1; | |
2797 | else if (unop_user_defined_p (op, arg1)) | |
2798 | { | |
2799 | return value_x_unop (arg1, op, noside); | |
2800 | } | |
2801 | else | |
2802 | { | |
c37f7098 KW |
2803 | arg3 = value_non_lval (arg1); |
2804 | ||
cc73bb8c | 2805 | if (ptrmath_type_p (exp->language_defn, value_type (arg1))) |
2497b498 | 2806 | arg2 = value_ptradd (arg1, 1); |
89eef114 | 2807 | else |
f44316fa UW |
2808 | { |
2809 | struct value *tmp = arg1; | |
d7f9d729 | 2810 | |
2497b498 | 2811 | arg2 = value_one (value_type (arg1), not_lval); |
f44316fa UW |
2812 | binop_promote (exp->language_defn, exp->gdbarch, &tmp, &arg2); |
2813 | arg2 = value_binop (tmp, arg2, BINOP_ADD); | |
2814 | } | |
89eef114 | 2815 | |
c906108c | 2816 | value_assign (arg1, arg2); |
c37f7098 | 2817 | return arg3; |
c906108c SS |
2818 | } |
2819 | ||
2820 | case UNOP_POSTDECREMENT: | |
2821 | arg1 = evaluate_subexp (expect_type, exp, pos, noside); | |
2822 | if (noside == EVAL_SKIP || noside == EVAL_AVOID_SIDE_EFFECTS) | |
2823 | return arg1; | |
2824 | else if (unop_user_defined_p (op, arg1)) | |
2825 | { | |
2826 | return value_x_unop (arg1, op, noside); | |
2827 | } | |
2828 | else | |
2829 | { | |
c37f7098 KW |
2830 | arg3 = value_non_lval (arg1); |
2831 | ||
cc73bb8c | 2832 | if (ptrmath_type_p (exp->language_defn, value_type (arg1))) |
2497b498 | 2833 | arg2 = value_ptradd (arg1, -1); |
89eef114 | 2834 | else |
f44316fa UW |
2835 | { |
2836 | struct value *tmp = arg1; | |
d7f9d729 | 2837 | |
2497b498 | 2838 | arg2 = value_one (value_type (arg1), not_lval); |
f44316fa UW |
2839 | binop_promote (exp->language_defn, exp->gdbarch, &tmp, &arg2); |
2840 | arg2 = value_binop (tmp, arg2, BINOP_SUB); | |
2841 | } | |
89eef114 | 2842 | |
c906108c | 2843 | value_assign (arg1, arg2); |
c37f7098 | 2844 | return arg3; |
c906108c | 2845 | } |
c5aa993b | 2846 | |
c906108c SS |
2847 | case OP_THIS: |
2848 | (*pos) += 1; | |
2849 | return value_of_this (1); | |
2850 | ||
a9fa03de AF |
2851 | case OP_OBJC_SELF: |
2852 | (*pos) += 1; | |
2853 | return value_of_local ("self", 1); | |
2854 | ||
c906108c | 2855 | case OP_TYPE: |
d843c49c FF |
2856 | /* The value is not supposed to be used. This is here to make it |
2857 | easier to accommodate expressions that contain types. */ | |
2858 | (*pos) += 2; | |
2859 | if (noside == EVAL_SKIP) | |
2860 | goto nosideret; | |
2861 | else if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
cb249c71 TT |
2862 | { |
2863 | struct type *type = exp->elts[pc + 1].type; | |
d7f9d729 | 2864 | |
cb249c71 TT |
2865 | /* If this is a typedef, then find its immediate target. We |
2866 | use check_typedef to resolve stubs, but we ignore its | |
2867 | result because we do not want to dig past all | |
2868 | typedefs. */ | |
2869 | check_typedef (type); | |
2870 | if (TYPE_CODE (type) == TYPE_CODE_TYPEDEF) | |
2871 | type = TYPE_TARGET_TYPE (type); | |
2872 | return allocate_value (type); | |
2873 | } | |
d843c49c FF |
2874 | else |
2875 | error (_("Attempt to use a type name as an expression")); | |
c906108c SS |
2876 | |
2877 | default: | |
2878 | /* Removing this case and compiling with gcc -Wall reveals that | |
c5aa993b | 2879 | a lot of cases are hitting this case. Some of these should |
2df3850c JM |
2880 | probably be removed from expression.h; others are legitimate |
2881 | expressions which are (apparently) not fully implemented. | |
c906108c | 2882 | |
c5aa993b JM |
2883 | If there are any cases landing here which mean a user error, |
2884 | then they should be separate cases, with more descriptive | |
2885 | error messages. */ | |
c906108c | 2886 | |
8a3fe4f8 AC |
2887 | error (_("\ |
2888 | GDB does not (yet) know how to evaluate that kind of expression")); | |
c906108c SS |
2889 | } |
2890 | ||
c5aa993b | 2891 | nosideret: |
22601c15 | 2892 | return value_from_longest (builtin_type (exp->gdbarch)->builtin_int, 1); |
c906108c SS |
2893 | } |
2894 | \f | |
2895 | /* Evaluate a subexpression of EXP, at index *POS, | |
2896 | and return the address of that subexpression. | |
2897 | Advance *POS over the subexpression. | |
2898 | If the subexpression isn't an lvalue, get an error. | |
2899 | NOSIDE may be EVAL_AVOID_SIDE_EFFECTS; | |
2900 | then only the type of the result need be correct. */ | |
2901 | ||
61051030 | 2902 | static struct value * |
aa1ee363 | 2903 | evaluate_subexp_for_address (struct expression *exp, int *pos, |
fba45db2 | 2904 | enum noside noside) |
c906108c SS |
2905 | { |
2906 | enum exp_opcode op; | |
52f0bd74 | 2907 | int pc; |
c906108c | 2908 | struct symbol *var; |
ab5c9f60 | 2909 | struct value *x; |
0d5de010 | 2910 | int tem; |
c906108c SS |
2911 | |
2912 | pc = (*pos); | |
2913 | op = exp->elts[pc].opcode; | |
2914 | ||
2915 | switch (op) | |
2916 | { | |
2917 | case UNOP_IND: | |
2918 | (*pos)++; | |
ab5c9f60 DJ |
2919 | x = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
2920 | ||
2921 | /* We can't optimize out "&*" if there's a user-defined operator*. */ | |
2922 | if (unop_user_defined_p (op, x)) | |
2923 | { | |
2924 | x = value_x_unop (x, op, noside); | |
0d5de010 | 2925 | goto default_case_after_eval; |
ab5c9f60 DJ |
2926 | } |
2927 | ||
708ead4e | 2928 | return coerce_array (x); |
c906108c SS |
2929 | |
2930 | case UNOP_MEMVAL: | |
2931 | (*pos) += 3; | |
2932 | return value_cast (lookup_pointer_type (exp->elts[pc + 1].type), | |
2933 | evaluate_subexp (NULL_TYPE, exp, pos, noside)); | |
2934 | ||
2935 | case OP_VAR_VALUE: | |
2936 | var = exp->elts[pc + 2].symbol; | |
2937 | ||
2938 | /* C++: The "address" of a reference should yield the address | |
2939 | * of the object pointed to. Let value_addr() deal with it. */ | |
2940 | if (TYPE_CODE (SYMBOL_TYPE (var)) == TYPE_CODE_REF) | |
c5aa993b | 2941 | goto default_case; |
c906108c SS |
2942 | |
2943 | (*pos) += 4; | |
2944 | if (noside == EVAL_AVOID_SIDE_EFFECTS) | |
2945 | { | |
2946 | struct type *type = | |
d7f9d729 | 2947 | lookup_pointer_type (SYMBOL_TYPE (var)); |
c906108c SS |
2948 | enum address_class sym_class = SYMBOL_CLASS (var); |
2949 | ||
2950 | if (sym_class == LOC_CONST | |
2951 | || sym_class == LOC_CONST_BYTES | |
2a2d4dc3 | 2952 | || sym_class == LOC_REGISTER) |
8a3fe4f8 | 2953 | error (_("Attempt to take address of register or constant.")); |
c906108c | 2954 | |
c5aa993b JM |
2955 | return |
2956 | value_zero (type, not_lval); | |
c906108c | 2957 | } |
ceef53c1 | 2958 | else |
61212c0f | 2959 | return address_of_variable (var, exp->elts[pc + 1].block); |
c906108c | 2960 | |
0d5de010 DJ |
2961 | case OP_SCOPE: |
2962 | tem = longest_to_int (exp->elts[pc + 2].longconst); | |
2963 | (*pos) += 5 + BYTES_TO_EXP_ELEM (tem + 1); | |
2964 | x = value_aggregate_elt (exp->elts[pc + 1].type, | |
2965 | &exp->elts[pc + 3].string, | |
072bba3b | 2966 | NULL, 1, noside); |
0d5de010 DJ |
2967 | if (x == NULL) |
2968 | error (_("There is no field named %s"), &exp->elts[pc + 3].string); | |
2969 | return x; | |
2970 | ||
c906108c SS |
2971 | default: |
2972 | default_case: | |
ab5c9f60 | 2973 | x = evaluate_subexp (NULL_TYPE, exp, pos, noside); |
0d5de010 | 2974 | default_case_after_eval: |
c906108c SS |
2975 | if (noside == EVAL_AVOID_SIDE_EFFECTS) |
2976 | { | |
0d5de010 DJ |
2977 | struct type *type = check_typedef (value_type (x)); |
2978 | ||
63092375 | 2979 | if (VALUE_LVAL (x) == lval_memory || value_must_coerce_to_target (x)) |
df407dfe | 2980 | return value_zero (lookup_pointer_type (value_type (x)), |
c906108c | 2981 | not_lval); |
0d5de010 DJ |
2982 | else if (TYPE_CODE (type) == TYPE_CODE_REF) |
2983 | return value_zero (lookup_pointer_type (TYPE_TARGET_TYPE (type)), | |
2984 | not_lval); | |
c906108c | 2985 | else |
63092375 | 2986 | error (_("Attempt to take address of value not located in memory.")); |
c906108c | 2987 | } |
ab5c9f60 | 2988 | return value_addr (x); |
c906108c SS |
2989 | } |
2990 | } | |
2991 | ||
2992 | /* Evaluate like `evaluate_subexp' except coercing arrays to pointers. | |
2993 | When used in contexts where arrays will be coerced anyway, this is | |
2994 | equivalent to `evaluate_subexp' but much faster because it avoids | |
2995 | actually fetching array contents (perhaps obsolete now that we have | |
d69fe07e | 2996 | value_lazy()). |
c906108c SS |
2997 | |
2998 | Note that we currently only do the coercion for C expressions, where | |
2999 | arrays are zero based and the coercion is correct. For other languages, | |
3000 | with nonzero based arrays, coercion loses. Use CAST_IS_CONVERSION | |
3001 | to decide if coercion is appropriate. | |
3002 | ||
c5aa993b | 3003 | */ |
c906108c | 3004 | |
61051030 | 3005 | struct value * |
aa1ee363 AC |
3006 | evaluate_subexp_with_coercion (struct expression *exp, |
3007 | int *pos, enum noside noside) | |
c906108c | 3008 | { |
52f0bd74 AC |
3009 | enum exp_opcode op; |
3010 | int pc; | |
61051030 | 3011 | struct value *val; |
c906108c | 3012 | struct symbol *var; |
61212c0f | 3013 | struct type *type; |
c906108c SS |
3014 | |
3015 | pc = (*pos); | |
3016 | op = exp->elts[pc].opcode; | |
3017 | ||
3018 | switch (op) | |
3019 | { | |
3020 | case OP_VAR_VALUE: | |
3021 | var = exp->elts[pc + 2].symbol; | |
61212c0f UW |
3022 | type = check_typedef (SYMBOL_TYPE (var)); |
3023 | if (TYPE_CODE (type) == TYPE_CODE_ARRAY | |
7346b668 | 3024 | && !TYPE_VECTOR (type) |
cc73bb8c | 3025 | && CAST_IS_CONVERSION (exp->language_defn)) |
c906108c SS |
3026 | { |
3027 | (*pos) += 4; | |
61212c0f UW |
3028 | val = address_of_variable (var, exp->elts[pc + 1].block); |
3029 | return value_cast (lookup_pointer_type (TYPE_TARGET_TYPE (type)), | |
c906108c SS |
3030 | val); |
3031 | } | |
3032 | /* FALLTHROUGH */ | |
3033 | ||
3034 | default: | |
3035 | return evaluate_subexp (NULL_TYPE, exp, pos, noside); | |
3036 | } | |
3037 | } | |
3038 | ||
3039 | /* Evaluate a subexpression of EXP, at index *POS, | |
3040 | and return a value for the size of that subexpression. | |
3041 | Advance *POS over the subexpression. */ | |
3042 | ||
61051030 | 3043 | static struct value * |
aa1ee363 | 3044 | evaluate_subexp_for_sizeof (struct expression *exp, int *pos) |
c906108c | 3045 | { |
98b90dd8 UW |
3046 | /* FIXME: This should be size_t. */ |
3047 | struct type *size_type = builtin_type (exp->gdbarch)->builtin_int; | |
c906108c | 3048 | enum exp_opcode op; |
52f0bd74 | 3049 | int pc; |
c906108c | 3050 | struct type *type; |
61051030 | 3051 | struct value *val; |
c906108c SS |
3052 | |
3053 | pc = (*pos); | |
3054 | op = exp->elts[pc].opcode; | |
3055 | ||
3056 | switch (op) | |
3057 | { | |
3058 | /* This case is handled specially | |
c5aa993b JM |
3059 | so that we avoid creating a value for the result type. |
3060 | If the result type is very big, it's desirable not to | |
3061 | create a value unnecessarily. */ | |
c906108c SS |
3062 | case UNOP_IND: |
3063 | (*pos)++; | |
3064 | val = evaluate_subexp (NULL_TYPE, exp, pos, EVAL_AVOID_SIDE_EFFECTS); | |
df407dfe | 3065 | type = check_typedef (value_type (val)); |
c906108c SS |
3066 | if (TYPE_CODE (type) != TYPE_CODE_PTR |
3067 | && TYPE_CODE (type) != TYPE_CODE_REF | |
3068 | && TYPE_CODE (type) != TYPE_CODE_ARRAY) | |
8a3fe4f8 | 3069 | error (_("Attempt to take contents of a non-pointer value.")); |
c906108c | 3070 | type = check_typedef (TYPE_TARGET_TYPE (type)); |
98b90dd8 | 3071 | return value_from_longest (size_type, (LONGEST) TYPE_LENGTH (type)); |
c906108c SS |
3072 | |
3073 | case UNOP_MEMVAL: | |
3074 | (*pos) += 3; | |
3075 | type = check_typedef (exp->elts[pc + 1].type); | |
98b90dd8 | 3076 | return value_from_longest (size_type, (LONGEST) TYPE_LENGTH (type)); |
c906108c SS |
3077 | |
3078 | case OP_VAR_VALUE: | |
3079 | (*pos) += 4; | |
3080 | type = check_typedef (SYMBOL_TYPE (exp->elts[pc + 2].symbol)); | |
3081 | return | |
98b90dd8 | 3082 | value_from_longest (size_type, (LONGEST) TYPE_LENGTH (type)); |
c906108c SS |
3083 | |
3084 | default: | |
3085 | val = evaluate_subexp (NULL_TYPE, exp, pos, EVAL_AVOID_SIDE_EFFECTS); | |
98b90dd8 | 3086 | return value_from_longest (size_type, |
df407dfe | 3087 | (LONGEST) TYPE_LENGTH (value_type (val))); |
c906108c SS |
3088 | } |
3089 | } | |
3090 | ||
3091 | /* Parse a type expression in the string [P..P+LENGTH). */ | |
3092 | ||
3093 | struct type * | |
fba45db2 | 3094 | parse_and_eval_type (char *p, int length) |
c906108c | 3095 | { |
c5aa993b JM |
3096 | char *tmp = (char *) alloca (length + 4); |
3097 | struct expression *expr; | |
d7f9d729 | 3098 | |
c5aa993b JM |
3099 | tmp[0] = '('; |
3100 | memcpy (tmp + 1, p, length); | |
3101 | tmp[length + 1] = ')'; | |
3102 | tmp[length + 2] = '0'; | |
3103 | tmp[length + 3] = '\0'; | |
3104 | expr = parse_expression (tmp); | |
3105 | if (expr->elts[0].opcode != UNOP_CAST) | |
8a3fe4f8 | 3106 | error (_("Internal error in eval_type.")); |
c5aa993b | 3107 | return expr->elts[1].type; |
c906108c SS |
3108 | } |
3109 | ||
3110 | int | |
fba45db2 | 3111 | calc_f77_array_dims (struct type *array_type) |
c906108c SS |
3112 | { |
3113 | int ndimen = 1; | |
3114 | struct type *tmp_type; | |
3115 | ||
c5aa993b | 3116 | if ((TYPE_CODE (array_type) != TYPE_CODE_ARRAY)) |
8a3fe4f8 | 3117 | error (_("Can't get dimensions for a non-array type")); |
c5aa993b JM |
3118 | |
3119 | tmp_type = array_type; | |
c906108c SS |
3120 | |
3121 | while ((tmp_type = TYPE_TARGET_TYPE (tmp_type))) | |
3122 | { | |
3123 | if (TYPE_CODE (tmp_type) == TYPE_CODE_ARRAY) | |
3124 | ++ndimen; | |
3125 | } | |
c5aa993b | 3126 | return ndimen; |
c906108c | 3127 | } |