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