Commit | Line | Data |
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c906108c | 1 | /* Support routines for manipulating internal types for GDB. |
4f2aea11 | 2 | |
ecd75fc8 | 3 | Copyright (C) 1992-2014 Free Software Foundation, Inc. |
4f2aea11 | 4 | |
c906108c SS |
5 | Contributed by Cygnus Support, using pieces from other GDB modules. |
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" | |
c906108c SS |
23 | #include "bfd.h" |
24 | #include "symtab.h" | |
25 | #include "symfile.h" | |
26 | #include "objfiles.h" | |
27 | #include "gdbtypes.h" | |
28 | #include "expression.h" | |
29 | #include "language.h" | |
30 | #include "target.h" | |
31 | #include "value.h" | |
32 | #include "demangle.h" | |
33 | #include "complaints.h" | |
34 | #include "gdbcmd.h" | |
015a42b4 | 35 | #include "cp-abi.h" |
ae5a43e0 | 36 | #include "hashtab.h" |
8e7b59a5 | 37 | #include "exceptions.h" |
8de20a37 | 38 | #include "cp-support.h" |
ca092b61 DE |
39 | #include "bcache.h" |
40 | #include "dwarf2loc.h" | |
80180f79 | 41 | #include "gdbcore.h" |
ac3aafc7 | 42 | |
6403aeea SW |
43 | /* Initialize BADNESS constants. */ |
44 | ||
a9d5ef47 | 45 | const struct rank LENGTH_MISMATCH_BADNESS = {100,0}; |
6403aeea | 46 | |
a9d5ef47 SW |
47 | const struct rank TOO_FEW_PARAMS_BADNESS = {100,0}; |
48 | const struct rank INCOMPATIBLE_TYPE_BADNESS = {100,0}; | |
6403aeea | 49 | |
a9d5ef47 | 50 | const struct rank EXACT_MATCH_BADNESS = {0,0}; |
6403aeea | 51 | |
a9d5ef47 SW |
52 | const struct rank INTEGER_PROMOTION_BADNESS = {1,0}; |
53 | const struct rank FLOAT_PROMOTION_BADNESS = {1,0}; | |
54 | const struct rank BASE_PTR_CONVERSION_BADNESS = {1,0}; | |
55 | const struct rank INTEGER_CONVERSION_BADNESS = {2,0}; | |
56 | const struct rank FLOAT_CONVERSION_BADNESS = {2,0}; | |
57 | const struct rank INT_FLOAT_CONVERSION_BADNESS = {2,0}; | |
58 | const struct rank VOID_PTR_CONVERSION_BADNESS = {2,0}; | |
5b4f6e25 | 59 | const struct rank BOOL_CONVERSION_BADNESS = {3,0}; |
a9d5ef47 SW |
60 | const struct rank BASE_CONVERSION_BADNESS = {2,0}; |
61 | const struct rank REFERENCE_CONVERSION_BADNESS = {2,0}; | |
da096638 | 62 | const struct rank NULL_POINTER_CONVERSION_BADNESS = {2,0}; |
a9d5ef47 | 63 | const struct rank NS_POINTER_CONVERSION_BADNESS = {10,0}; |
a451cb65 | 64 | const struct rank NS_INTEGER_POINTER_CONVERSION_BADNESS = {3,0}; |
6403aeea | 65 | |
8da61cc4 | 66 | /* Floatformat pairs. */ |
f9e9243a UW |
67 | const struct floatformat *floatformats_ieee_half[BFD_ENDIAN_UNKNOWN] = { |
68 | &floatformat_ieee_half_big, | |
69 | &floatformat_ieee_half_little | |
70 | }; | |
8da61cc4 DJ |
71 | const struct floatformat *floatformats_ieee_single[BFD_ENDIAN_UNKNOWN] = { |
72 | &floatformat_ieee_single_big, | |
73 | &floatformat_ieee_single_little | |
74 | }; | |
75 | const struct floatformat *floatformats_ieee_double[BFD_ENDIAN_UNKNOWN] = { | |
76 | &floatformat_ieee_double_big, | |
77 | &floatformat_ieee_double_little | |
78 | }; | |
79 | const struct floatformat *floatformats_ieee_double_littlebyte_bigword[BFD_ENDIAN_UNKNOWN] = { | |
80 | &floatformat_ieee_double_big, | |
81 | &floatformat_ieee_double_littlebyte_bigword | |
82 | }; | |
83 | const struct floatformat *floatformats_i387_ext[BFD_ENDIAN_UNKNOWN] = { | |
84 | &floatformat_i387_ext, | |
85 | &floatformat_i387_ext | |
86 | }; | |
87 | const struct floatformat *floatformats_m68881_ext[BFD_ENDIAN_UNKNOWN] = { | |
88 | &floatformat_m68881_ext, | |
89 | &floatformat_m68881_ext | |
90 | }; | |
91 | const struct floatformat *floatformats_arm_ext[BFD_ENDIAN_UNKNOWN] = { | |
92 | &floatformat_arm_ext_big, | |
93 | &floatformat_arm_ext_littlebyte_bigword | |
94 | }; | |
95 | const struct floatformat *floatformats_ia64_spill[BFD_ENDIAN_UNKNOWN] = { | |
96 | &floatformat_ia64_spill_big, | |
97 | &floatformat_ia64_spill_little | |
98 | }; | |
99 | const struct floatformat *floatformats_ia64_quad[BFD_ENDIAN_UNKNOWN] = { | |
100 | &floatformat_ia64_quad_big, | |
101 | &floatformat_ia64_quad_little | |
102 | }; | |
103 | const struct floatformat *floatformats_vax_f[BFD_ENDIAN_UNKNOWN] = { | |
104 | &floatformat_vax_f, | |
105 | &floatformat_vax_f | |
106 | }; | |
107 | const struct floatformat *floatformats_vax_d[BFD_ENDIAN_UNKNOWN] = { | |
108 | &floatformat_vax_d, | |
109 | &floatformat_vax_d | |
110 | }; | |
b14d30e1 | 111 | const struct floatformat *floatformats_ibm_long_double[BFD_ENDIAN_UNKNOWN] = { |
f5aee5ee AM |
112 | &floatformat_ibm_long_double_big, |
113 | &floatformat_ibm_long_double_little | |
b14d30e1 | 114 | }; |
8da61cc4 | 115 | |
2873700e KS |
116 | /* Should opaque types be resolved? */ |
117 | ||
118 | static int opaque_type_resolution = 1; | |
119 | ||
120 | /* A flag to enable printing of debugging information of C++ | |
121 | overloading. */ | |
122 | ||
123 | unsigned int overload_debug = 0; | |
124 | ||
a451cb65 KS |
125 | /* A flag to enable strict type checking. */ |
126 | ||
127 | static int strict_type_checking = 1; | |
128 | ||
2873700e | 129 | /* A function to show whether opaque types are resolved. */ |
5212577a | 130 | |
920d2a44 AC |
131 | static void |
132 | show_opaque_type_resolution (struct ui_file *file, int from_tty, | |
7ba81444 MS |
133 | struct cmd_list_element *c, |
134 | const char *value) | |
920d2a44 | 135 | { |
3e43a32a MS |
136 | fprintf_filtered (file, _("Resolution of opaque struct/class/union types " |
137 | "(if set before loading symbols) is %s.\n"), | |
920d2a44 AC |
138 | value); |
139 | } | |
140 | ||
2873700e | 141 | /* A function to show whether C++ overload debugging is enabled. */ |
5212577a | 142 | |
920d2a44 AC |
143 | static void |
144 | show_overload_debug (struct ui_file *file, int from_tty, | |
145 | struct cmd_list_element *c, const char *value) | |
146 | { | |
7ba81444 MS |
147 | fprintf_filtered (file, _("Debugging of C++ overloading is %s.\n"), |
148 | value); | |
920d2a44 | 149 | } |
c906108c | 150 | |
a451cb65 KS |
151 | /* A function to show the status of strict type checking. */ |
152 | ||
153 | static void | |
154 | show_strict_type_checking (struct ui_file *file, int from_tty, | |
155 | struct cmd_list_element *c, const char *value) | |
156 | { | |
157 | fprintf_filtered (file, _("Strict type checking is %s.\n"), value); | |
158 | } | |
159 | ||
5212577a | 160 | \f |
e9bb382b UW |
161 | /* Allocate a new OBJFILE-associated type structure and fill it |
162 | with some defaults. Space for the type structure is allocated | |
163 | on the objfile's objfile_obstack. */ | |
c906108c SS |
164 | |
165 | struct type * | |
fba45db2 | 166 | alloc_type (struct objfile *objfile) |
c906108c | 167 | { |
52f0bd74 | 168 | struct type *type; |
c906108c | 169 | |
e9bb382b UW |
170 | gdb_assert (objfile != NULL); |
171 | ||
7ba81444 | 172 | /* Alloc the structure and start off with all fields zeroed. */ |
e9bb382b UW |
173 | type = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct type); |
174 | TYPE_MAIN_TYPE (type) = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
175 | struct main_type); | |
176 | OBJSTAT (objfile, n_types++); | |
c906108c | 177 | |
e9bb382b UW |
178 | TYPE_OBJFILE_OWNED (type) = 1; |
179 | TYPE_OWNER (type).objfile = objfile; | |
c906108c | 180 | |
7ba81444 | 181 | /* Initialize the fields that might not be zero. */ |
c906108c SS |
182 | |
183 | TYPE_CODE (type) = TYPE_CODE_UNDEF; | |
c906108c | 184 | TYPE_VPTR_FIELDNO (type) = -1; |
2fdde8f8 | 185 | TYPE_CHAIN (type) = type; /* Chain back to itself. */ |
c906108c | 186 | |
c16abbde | 187 | return type; |
c906108c SS |
188 | } |
189 | ||
e9bb382b UW |
190 | /* Allocate a new GDBARCH-associated type structure and fill it |
191 | with some defaults. Space for the type structure is allocated | |
192 | on the heap. */ | |
193 | ||
194 | struct type * | |
195 | alloc_type_arch (struct gdbarch *gdbarch) | |
196 | { | |
197 | struct type *type; | |
198 | ||
199 | gdb_assert (gdbarch != NULL); | |
200 | ||
201 | /* Alloc the structure and start off with all fields zeroed. */ | |
202 | ||
41bf6aca TT |
203 | type = XCNEW (struct type); |
204 | TYPE_MAIN_TYPE (type) = XCNEW (struct main_type); | |
e9bb382b UW |
205 | |
206 | TYPE_OBJFILE_OWNED (type) = 0; | |
207 | TYPE_OWNER (type).gdbarch = gdbarch; | |
208 | ||
209 | /* Initialize the fields that might not be zero. */ | |
210 | ||
211 | TYPE_CODE (type) = TYPE_CODE_UNDEF; | |
212 | TYPE_VPTR_FIELDNO (type) = -1; | |
213 | TYPE_CHAIN (type) = type; /* Chain back to itself. */ | |
214 | ||
215 | return type; | |
216 | } | |
217 | ||
218 | /* If TYPE is objfile-associated, allocate a new type structure | |
219 | associated with the same objfile. If TYPE is gdbarch-associated, | |
220 | allocate a new type structure associated with the same gdbarch. */ | |
221 | ||
222 | struct type * | |
223 | alloc_type_copy (const struct type *type) | |
224 | { | |
225 | if (TYPE_OBJFILE_OWNED (type)) | |
226 | return alloc_type (TYPE_OWNER (type).objfile); | |
227 | else | |
228 | return alloc_type_arch (TYPE_OWNER (type).gdbarch); | |
229 | } | |
230 | ||
231 | /* If TYPE is gdbarch-associated, return that architecture. | |
232 | If TYPE is objfile-associated, return that objfile's architecture. */ | |
233 | ||
234 | struct gdbarch * | |
235 | get_type_arch (const struct type *type) | |
236 | { | |
237 | if (TYPE_OBJFILE_OWNED (type)) | |
238 | return get_objfile_arch (TYPE_OWNER (type).objfile); | |
239 | else | |
240 | return TYPE_OWNER (type).gdbarch; | |
241 | } | |
242 | ||
99ad9427 YQ |
243 | /* See gdbtypes.h. */ |
244 | ||
245 | struct type * | |
246 | get_target_type (struct type *type) | |
247 | { | |
248 | if (type != NULL) | |
249 | { | |
250 | type = TYPE_TARGET_TYPE (type); | |
251 | if (type != NULL) | |
252 | type = check_typedef (type); | |
253 | } | |
254 | ||
255 | return type; | |
256 | } | |
257 | ||
2fdde8f8 DJ |
258 | /* Alloc a new type instance structure, fill it with some defaults, |
259 | and point it at OLDTYPE. Allocate the new type instance from the | |
260 | same place as OLDTYPE. */ | |
261 | ||
262 | static struct type * | |
263 | alloc_type_instance (struct type *oldtype) | |
264 | { | |
265 | struct type *type; | |
266 | ||
267 | /* Allocate the structure. */ | |
268 | ||
e9bb382b | 269 | if (! TYPE_OBJFILE_OWNED (oldtype)) |
41bf6aca | 270 | type = XCNEW (struct type); |
2fdde8f8 | 271 | else |
1deafd4e PA |
272 | type = OBSTACK_ZALLOC (&TYPE_OBJFILE (oldtype)->objfile_obstack, |
273 | struct type); | |
274 | ||
2fdde8f8 DJ |
275 | TYPE_MAIN_TYPE (type) = TYPE_MAIN_TYPE (oldtype); |
276 | ||
277 | TYPE_CHAIN (type) = type; /* Chain back to itself for now. */ | |
278 | ||
c16abbde | 279 | return type; |
2fdde8f8 DJ |
280 | } |
281 | ||
282 | /* Clear all remnants of the previous type at TYPE, in preparation for | |
e9bb382b | 283 | replacing it with something else. Preserve owner information. */ |
5212577a | 284 | |
2fdde8f8 DJ |
285 | static void |
286 | smash_type (struct type *type) | |
287 | { | |
e9bb382b UW |
288 | int objfile_owned = TYPE_OBJFILE_OWNED (type); |
289 | union type_owner owner = TYPE_OWNER (type); | |
290 | ||
2fdde8f8 DJ |
291 | memset (TYPE_MAIN_TYPE (type), 0, sizeof (struct main_type)); |
292 | ||
e9bb382b UW |
293 | /* Restore owner information. */ |
294 | TYPE_OBJFILE_OWNED (type) = objfile_owned; | |
295 | TYPE_OWNER (type) = owner; | |
296 | ||
2fdde8f8 DJ |
297 | /* For now, delete the rings. */ |
298 | TYPE_CHAIN (type) = type; | |
299 | ||
300 | /* For now, leave the pointer/reference types alone. */ | |
301 | } | |
302 | ||
c906108c SS |
303 | /* Lookup a pointer to a type TYPE. TYPEPTR, if nonzero, points |
304 | to a pointer to memory where the pointer type should be stored. | |
305 | If *TYPEPTR is zero, update it to point to the pointer type we return. | |
306 | We allocate new memory if needed. */ | |
307 | ||
308 | struct type * | |
fba45db2 | 309 | make_pointer_type (struct type *type, struct type **typeptr) |
c906108c | 310 | { |
52f0bd74 | 311 | struct type *ntype; /* New type */ |
053cb41b | 312 | struct type *chain; |
c906108c SS |
313 | |
314 | ntype = TYPE_POINTER_TYPE (type); | |
315 | ||
c5aa993b | 316 | if (ntype) |
c906108c | 317 | { |
c5aa993b | 318 | if (typeptr == 0) |
7ba81444 MS |
319 | return ntype; /* Don't care about alloc, |
320 | and have new type. */ | |
c906108c | 321 | else if (*typeptr == 0) |
c5aa993b | 322 | { |
7ba81444 | 323 | *typeptr = ntype; /* Tracking alloc, and have new type. */ |
c906108c | 324 | return ntype; |
c5aa993b | 325 | } |
c906108c SS |
326 | } |
327 | ||
328 | if (typeptr == 0 || *typeptr == 0) /* We'll need to allocate one. */ | |
329 | { | |
e9bb382b | 330 | ntype = alloc_type_copy (type); |
c906108c SS |
331 | if (typeptr) |
332 | *typeptr = ntype; | |
333 | } | |
7ba81444 | 334 | else /* We have storage, but need to reset it. */ |
c906108c SS |
335 | { |
336 | ntype = *typeptr; | |
053cb41b | 337 | chain = TYPE_CHAIN (ntype); |
2fdde8f8 | 338 | smash_type (ntype); |
053cb41b | 339 | TYPE_CHAIN (ntype) = chain; |
c906108c SS |
340 | } |
341 | ||
342 | TYPE_TARGET_TYPE (ntype) = type; | |
343 | TYPE_POINTER_TYPE (type) = ntype; | |
344 | ||
5212577a | 345 | /* FIXME! Assumes the machine has only one representation for pointers! */ |
c906108c | 346 | |
50810684 UW |
347 | TYPE_LENGTH (ntype) |
348 | = gdbarch_ptr_bit (get_type_arch (type)) / TARGET_CHAR_BIT; | |
c906108c SS |
349 | TYPE_CODE (ntype) = TYPE_CODE_PTR; |
350 | ||
67b2adb2 | 351 | /* Mark pointers as unsigned. The target converts between pointers |
76e71323 | 352 | and addresses (CORE_ADDRs) using gdbarch_pointer_to_address and |
7ba81444 | 353 | gdbarch_address_to_pointer. */ |
876cecd0 | 354 | TYPE_UNSIGNED (ntype) = 1; |
c5aa993b | 355 | |
053cb41b JB |
356 | /* Update the length of all the other variants of this type. */ |
357 | chain = TYPE_CHAIN (ntype); | |
358 | while (chain != ntype) | |
359 | { | |
360 | TYPE_LENGTH (chain) = TYPE_LENGTH (ntype); | |
361 | chain = TYPE_CHAIN (chain); | |
362 | } | |
363 | ||
c906108c SS |
364 | return ntype; |
365 | } | |
366 | ||
367 | /* Given a type TYPE, return a type of pointers to that type. | |
368 | May need to construct such a type if this is the first use. */ | |
369 | ||
370 | struct type * | |
fba45db2 | 371 | lookup_pointer_type (struct type *type) |
c906108c | 372 | { |
c5aa993b | 373 | return make_pointer_type (type, (struct type **) 0); |
c906108c SS |
374 | } |
375 | ||
7ba81444 MS |
376 | /* Lookup a C++ `reference' to a type TYPE. TYPEPTR, if nonzero, |
377 | points to a pointer to memory where the reference type should be | |
378 | stored. If *TYPEPTR is zero, update it to point to the reference | |
379 | type we return. We allocate new memory if needed. */ | |
c906108c SS |
380 | |
381 | struct type * | |
fba45db2 | 382 | make_reference_type (struct type *type, struct type **typeptr) |
c906108c | 383 | { |
52f0bd74 | 384 | struct type *ntype; /* New type */ |
1e98b326 | 385 | struct type *chain; |
c906108c SS |
386 | |
387 | ntype = TYPE_REFERENCE_TYPE (type); | |
388 | ||
c5aa993b | 389 | if (ntype) |
c906108c | 390 | { |
c5aa993b | 391 | if (typeptr == 0) |
7ba81444 MS |
392 | return ntype; /* Don't care about alloc, |
393 | and have new type. */ | |
c906108c | 394 | else if (*typeptr == 0) |
c5aa993b | 395 | { |
7ba81444 | 396 | *typeptr = ntype; /* Tracking alloc, and have new type. */ |
c906108c | 397 | return ntype; |
c5aa993b | 398 | } |
c906108c SS |
399 | } |
400 | ||
401 | if (typeptr == 0 || *typeptr == 0) /* We'll need to allocate one. */ | |
402 | { | |
e9bb382b | 403 | ntype = alloc_type_copy (type); |
c906108c SS |
404 | if (typeptr) |
405 | *typeptr = ntype; | |
406 | } | |
7ba81444 | 407 | else /* We have storage, but need to reset it. */ |
c906108c SS |
408 | { |
409 | ntype = *typeptr; | |
1e98b326 | 410 | chain = TYPE_CHAIN (ntype); |
2fdde8f8 | 411 | smash_type (ntype); |
1e98b326 | 412 | TYPE_CHAIN (ntype) = chain; |
c906108c SS |
413 | } |
414 | ||
415 | TYPE_TARGET_TYPE (ntype) = type; | |
416 | TYPE_REFERENCE_TYPE (type) = ntype; | |
417 | ||
7ba81444 MS |
418 | /* FIXME! Assume the machine has only one representation for |
419 | references, and that it matches the (only) representation for | |
420 | pointers! */ | |
c906108c | 421 | |
50810684 UW |
422 | TYPE_LENGTH (ntype) = |
423 | gdbarch_ptr_bit (get_type_arch (type)) / TARGET_CHAR_BIT; | |
c906108c | 424 | TYPE_CODE (ntype) = TYPE_CODE_REF; |
c5aa993b | 425 | |
c906108c SS |
426 | if (!TYPE_REFERENCE_TYPE (type)) /* Remember it, if don't have one. */ |
427 | TYPE_REFERENCE_TYPE (type) = ntype; | |
428 | ||
1e98b326 JB |
429 | /* Update the length of all the other variants of this type. */ |
430 | chain = TYPE_CHAIN (ntype); | |
431 | while (chain != ntype) | |
432 | { | |
433 | TYPE_LENGTH (chain) = TYPE_LENGTH (ntype); | |
434 | chain = TYPE_CHAIN (chain); | |
435 | } | |
436 | ||
c906108c SS |
437 | return ntype; |
438 | } | |
439 | ||
7ba81444 MS |
440 | /* Same as above, but caller doesn't care about memory allocation |
441 | details. */ | |
c906108c SS |
442 | |
443 | struct type * | |
fba45db2 | 444 | lookup_reference_type (struct type *type) |
c906108c | 445 | { |
c5aa993b | 446 | return make_reference_type (type, (struct type **) 0); |
c906108c SS |
447 | } |
448 | ||
7ba81444 MS |
449 | /* Lookup a function type that returns type TYPE. TYPEPTR, if |
450 | nonzero, points to a pointer to memory where the function type | |
451 | should be stored. If *TYPEPTR is zero, update it to point to the | |
0c8b41f1 | 452 | function type we return. We allocate new memory if needed. */ |
c906108c SS |
453 | |
454 | struct type * | |
0c8b41f1 | 455 | make_function_type (struct type *type, struct type **typeptr) |
c906108c | 456 | { |
52f0bd74 | 457 | struct type *ntype; /* New type */ |
c906108c SS |
458 | |
459 | if (typeptr == 0 || *typeptr == 0) /* We'll need to allocate one. */ | |
460 | { | |
e9bb382b | 461 | ntype = alloc_type_copy (type); |
c906108c SS |
462 | if (typeptr) |
463 | *typeptr = ntype; | |
464 | } | |
7ba81444 | 465 | else /* We have storage, but need to reset it. */ |
c906108c SS |
466 | { |
467 | ntype = *typeptr; | |
2fdde8f8 | 468 | smash_type (ntype); |
c906108c SS |
469 | } |
470 | ||
471 | TYPE_TARGET_TYPE (ntype) = type; | |
472 | ||
473 | TYPE_LENGTH (ntype) = 1; | |
474 | TYPE_CODE (ntype) = TYPE_CODE_FUNC; | |
c5aa993b | 475 | |
b6cdc2c1 JK |
476 | INIT_FUNC_SPECIFIC (ntype); |
477 | ||
c906108c SS |
478 | return ntype; |
479 | } | |
480 | ||
c906108c SS |
481 | /* Given a type TYPE, return a type of functions that return that type. |
482 | May need to construct such a type if this is the first use. */ | |
483 | ||
484 | struct type * | |
fba45db2 | 485 | lookup_function_type (struct type *type) |
c906108c | 486 | { |
0c8b41f1 | 487 | return make_function_type (type, (struct type **) 0); |
c906108c SS |
488 | } |
489 | ||
71918a86 | 490 | /* Given a type TYPE and argument types, return the appropriate |
a6fb9c08 TT |
491 | function type. If the final type in PARAM_TYPES is NULL, make a |
492 | varargs function. */ | |
71918a86 TT |
493 | |
494 | struct type * | |
495 | lookup_function_type_with_arguments (struct type *type, | |
496 | int nparams, | |
497 | struct type **param_types) | |
498 | { | |
499 | struct type *fn = make_function_type (type, (struct type **) 0); | |
500 | int i; | |
501 | ||
e314d629 | 502 | if (nparams > 0) |
a6fb9c08 | 503 | { |
e314d629 TT |
504 | if (param_types[nparams - 1] == NULL) |
505 | { | |
506 | --nparams; | |
507 | TYPE_VARARGS (fn) = 1; | |
508 | } | |
509 | else if (TYPE_CODE (check_typedef (param_types[nparams - 1])) | |
510 | == TYPE_CODE_VOID) | |
511 | { | |
512 | --nparams; | |
513 | /* Caller should have ensured this. */ | |
514 | gdb_assert (nparams == 0); | |
515 | TYPE_PROTOTYPED (fn) = 1; | |
516 | } | |
a6fb9c08 TT |
517 | } |
518 | ||
71918a86 TT |
519 | TYPE_NFIELDS (fn) = nparams; |
520 | TYPE_FIELDS (fn) = TYPE_ZALLOC (fn, nparams * sizeof (struct field)); | |
521 | for (i = 0; i < nparams; ++i) | |
522 | TYPE_FIELD_TYPE (fn, i) = param_types[i]; | |
523 | ||
524 | return fn; | |
525 | } | |
526 | ||
47663de5 MS |
527 | /* Identify address space identifier by name -- |
528 | return the integer flag defined in gdbtypes.h. */ | |
5212577a DE |
529 | |
530 | int | |
50810684 | 531 | address_space_name_to_int (struct gdbarch *gdbarch, char *space_identifier) |
47663de5 | 532 | { |
8b2dbe47 | 533 | int type_flags; |
d8734c88 | 534 | |
7ba81444 | 535 | /* Check for known address space delimiters. */ |
47663de5 | 536 | if (!strcmp (space_identifier, "code")) |
876cecd0 | 537 | return TYPE_INSTANCE_FLAG_CODE_SPACE; |
47663de5 | 538 | else if (!strcmp (space_identifier, "data")) |
876cecd0 | 539 | return TYPE_INSTANCE_FLAG_DATA_SPACE; |
5f11f355 AC |
540 | else if (gdbarch_address_class_name_to_type_flags_p (gdbarch) |
541 | && gdbarch_address_class_name_to_type_flags (gdbarch, | |
542 | space_identifier, | |
543 | &type_flags)) | |
8b2dbe47 | 544 | return type_flags; |
47663de5 | 545 | else |
8a3fe4f8 | 546 | error (_("Unknown address space specifier: \"%s\""), space_identifier); |
47663de5 MS |
547 | } |
548 | ||
549 | /* Identify address space identifier by integer flag as defined in | |
7ba81444 | 550 | gdbtypes.h -- return the string version of the adress space name. */ |
47663de5 | 551 | |
321432c0 | 552 | const char * |
50810684 | 553 | address_space_int_to_name (struct gdbarch *gdbarch, int space_flag) |
47663de5 | 554 | { |
876cecd0 | 555 | if (space_flag & TYPE_INSTANCE_FLAG_CODE_SPACE) |
47663de5 | 556 | return "code"; |
876cecd0 | 557 | else if (space_flag & TYPE_INSTANCE_FLAG_DATA_SPACE) |
47663de5 | 558 | return "data"; |
876cecd0 | 559 | else if ((space_flag & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
5f11f355 AC |
560 | && gdbarch_address_class_type_flags_to_name_p (gdbarch)) |
561 | return gdbarch_address_class_type_flags_to_name (gdbarch, space_flag); | |
47663de5 MS |
562 | else |
563 | return NULL; | |
564 | } | |
565 | ||
2fdde8f8 | 566 | /* Create a new type with instance flags NEW_FLAGS, based on TYPE. |
ad766c0a JB |
567 | |
568 | If STORAGE is non-NULL, create the new type instance there. | |
569 | STORAGE must be in the same obstack as TYPE. */ | |
47663de5 | 570 | |
b9362cc7 | 571 | static struct type * |
2fdde8f8 DJ |
572 | make_qualified_type (struct type *type, int new_flags, |
573 | struct type *storage) | |
47663de5 MS |
574 | { |
575 | struct type *ntype; | |
576 | ||
577 | ntype = type; | |
5f61c20e JK |
578 | do |
579 | { | |
580 | if (TYPE_INSTANCE_FLAGS (ntype) == new_flags) | |
581 | return ntype; | |
582 | ntype = TYPE_CHAIN (ntype); | |
583 | } | |
584 | while (ntype != type); | |
47663de5 | 585 | |
2fdde8f8 DJ |
586 | /* Create a new type instance. */ |
587 | if (storage == NULL) | |
588 | ntype = alloc_type_instance (type); | |
589 | else | |
590 | { | |
7ba81444 MS |
591 | /* If STORAGE was provided, it had better be in the same objfile |
592 | as TYPE. Otherwise, we can't link it into TYPE's cv chain: | |
593 | if one objfile is freed and the other kept, we'd have | |
594 | dangling pointers. */ | |
ad766c0a JB |
595 | gdb_assert (TYPE_OBJFILE (type) == TYPE_OBJFILE (storage)); |
596 | ||
2fdde8f8 DJ |
597 | ntype = storage; |
598 | TYPE_MAIN_TYPE (ntype) = TYPE_MAIN_TYPE (type); | |
599 | TYPE_CHAIN (ntype) = ntype; | |
600 | } | |
47663de5 MS |
601 | |
602 | /* Pointers or references to the original type are not relevant to | |
2fdde8f8 | 603 | the new type. */ |
47663de5 MS |
604 | TYPE_POINTER_TYPE (ntype) = (struct type *) 0; |
605 | TYPE_REFERENCE_TYPE (ntype) = (struct type *) 0; | |
47663de5 | 606 | |
2fdde8f8 DJ |
607 | /* Chain the new qualified type to the old type. */ |
608 | TYPE_CHAIN (ntype) = TYPE_CHAIN (type); | |
609 | TYPE_CHAIN (type) = ntype; | |
610 | ||
611 | /* Now set the instance flags and return the new type. */ | |
612 | TYPE_INSTANCE_FLAGS (ntype) = new_flags; | |
47663de5 | 613 | |
ab5d3da6 KB |
614 | /* Set length of new type to that of the original type. */ |
615 | TYPE_LENGTH (ntype) = TYPE_LENGTH (type); | |
616 | ||
47663de5 MS |
617 | return ntype; |
618 | } | |
619 | ||
2fdde8f8 DJ |
620 | /* Make an address-space-delimited variant of a type -- a type that |
621 | is identical to the one supplied except that it has an address | |
622 | space attribute attached to it (such as "code" or "data"). | |
623 | ||
7ba81444 MS |
624 | The space attributes "code" and "data" are for Harvard |
625 | architectures. The address space attributes are for architectures | |
626 | which have alternately sized pointers or pointers with alternate | |
627 | representations. */ | |
2fdde8f8 DJ |
628 | |
629 | struct type * | |
630 | make_type_with_address_space (struct type *type, int space_flag) | |
631 | { | |
2fdde8f8 | 632 | int new_flags = ((TYPE_INSTANCE_FLAGS (type) |
876cecd0 TT |
633 | & ~(TYPE_INSTANCE_FLAG_CODE_SPACE |
634 | | TYPE_INSTANCE_FLAG_DATA_SPACE | |
635 | | TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL)) | |
2fdde8f8 DJ |
636 | | space_flag); |
637 | ||
638 | return make_qualified_type (type, new_flags, NULL); | |
639 | } | |
c906108c SS |
640 | |
641 | /* Make a "c-v" variant of a type -- a type that is identical to the | |
642 | one supplied except that it may have const or volatile attributes | |
643 | CNST is a flag for setting the const attribute | |
644 | VOLTL is a flag for setting the volatile attribute | |
645 | TYPE is the base type whose variant we are creating. | |
c906108c | 646 | |
ad766c0a JB |
647 | If TYPEPTR and *TYPEPTR are non-zero, then *TYPEPTR points to |
648 | storage to hold the new qualified type; *TYPEPTR and TYPE must be | |
649 | in the same objfile. Otherwise, allocate fresh memory for the new | |
650 | type whereever TYPE lives. If TYPEPTR is non-zero, set it to the | |
651 | new type we construct. */ | |
5212577a | 652 | |
c906108c | 653 | struct type * |
7ba81444 MS |
654 | make_cv_type (int cnst, int voltl, |
655 | struct type *type, | |
656 | struct type **typeptr) | |
c906108c | 657 | { |
52f0bd74 | 658 | struct type *ntype; /* New type */ |
c906108c | 659 | |
2fdde8f8 | 660 | int new_flags = (TYPE_INSTANCE_FLAGS (type) |
308d96ed MS |
661 | & ~(TYPE_INSTANCE_FLAG_CONST |
662 | | TYPE_INSTANCE_FLAG_VOLATILE)); | |
c906108c | 663 | |
c906108c | 664 | if (cnst) |
876cecd0 | 665 | new_flags |= TYPE_INSTANCE_FLAG_CONST; |
c906108c SS |
666 | |
667 | if (voltl) | |
876cecd0 | 668 | new_flags |= TYPE_INSTANCE_FLAG_VOLATILE; |
a02fd225 | 669 | |
2fdde8f8 | 670 | if (typeptr && *typeptr != NULL) |
a02fd225 | 671 | { |
ad766c0a JB |
672 | /* TYPE and *TYPEPTR must be in the same objfile. We can't have |
673 | a C-V variant chain that threads across objfiles: if one | |
674 | objfile gets freed, then the other has a broken C-V chain. | |
675 | ||
676 | This code used to try to copy over the main type from TYPE to | |
677 | *TYPEPTR if they were in different objfiles, but that's | |
678 | wrong, too: TYPE may have a field list or member function | |
679 | lists, which refer to types of their own, etc. etc. The | |
680 | whole shebang would need to be copied over recursively; you | |
681 | can't have inter-objfile pointers. The only thing to do is | |
682 | to leave stub types as stub types, and look them up afresh by | |
683 | name each time you encounter them. */ | |
684 | gdb_assert (TYPE_OBJFILE (*typeptr) == TYPE_OBJFILE (type)); | |
2fdde8f8 DJ |
685 | } |
686 | ||
7ba81444 MS |
687 | ntype = make_qualified_type (type, new_flags, |
688 | typeptr ? *typeptr : NULL); | |
c906108c | 689 | |
2fdde8f8 DJ |
690 | if (typeptr != NULL) |
691 | *typeptr = ntype; | |
a02fd225 | 692 | |
2fdde8f8 | 693 | return ntype; |
a02fd225 | 694 | } |
c906108c | 695 | |
06d66ee9 TT |
696 | /* Make a 'restrict'-qualified version of TYPE. */ |
697 | ||
698 | struct type * | |
699 | make_restrict_type (struct type *type) | |
700 | { | |
701 | return make_qualified_type (type, | |
702 | (TYPE_INSTANCE_FLAGS (type) | |
703 | | TYPE_INSTANCE_FLAG_RESTRICT), | |
704 | NULL); | |
705 | } | |
706 | ||
2fdde8f8 DJ |
707 | /* Replace the contents of ntype with the type *type. This changes the |
708 | contents, rather than the pointer for TYPE_MAIN_TYPE (ntype); thus | |
709 | the changes are propogated to all types in the TYPE_CHAIN. | |
dd6bda65 | 710 | |
cda6c68a JB |
711 | In order to build recursive types, it's inevitable that we'll need |
712 | to update types in place --- but this sort of indiscriminate | |
713 | smashing is ugly, and needs to be replaced with something more | |
2fdde8f8 DJ |
714 | controlled. TYPE_MAIN_TYPE is a step in this direction; it's not |
715 | clear if more steps are needed. */ | |
5212577a | 716 | |
dd6bda65 DJ |
717 | void |
718 | replace_type (struct type *ntype, struct type *type) | |
719 | { | |
ab5d3da6 | 720 | struct type *chain; |
dd6bda65 | 721 | |
ad766c0a JB |
722 | /* These two types had better be in the same objfile. Otherwise, |
723 | the assignment of one type's main type structure to the other | |
724 | will produce a type with references to objects (names; field | |
725 | lists; etc.) allocated on an objfile other than its own. */ | |
726 | gdb_assert (TYPE_OBJFILE (ntype) == TYPE_OBJFILE (ntype)); | |
727 | ||
2fdde8f8 | 728 | *TYPE_MAIN_TYPE (ntype) = *TYPE_MAIN_TYPE (type); |
dd6bda65 | 729 | |
7ba81444 MS |
730 | /* The type length is not a part of the main type. Update it for |
731 | each type on the variant chain. */ | |
ab5d3da6 | 732 | chain = ntype; |
5f61c20e JK |
733 | do |
734 | { | |
735 | /* Assert that this element of the chain has no address-class bits | |
736 | set in its flags. Such type variants might have type lengths | |
737 | which are supposed to be different from the non-address-class | |
738 | variants. This assertion shouldn't ever be triggered because | |
739 | symbol readers which do construct address-class variants don't | |
740 | call replace_type(). */ | |
741 | gdb_assert (TYPE_ADDRESS_CLASS_ALL (chain) == 0); | |
742 | ||
743 | TYPE_LENGTH (chain) = TYPE_LENGTH (type); | |
744 | chain = TYPE_CHAIN (chain); | |
745 | } | |
746 | while (ntype != chain); | |
ab5d3da6 | 747 | |
2fdde8f8 DJ |
748 | /* Assert that the two types have equivalent instance qualifiers. |
749 | This should be true for at least all of our debug readers. */ | |
750 | gdb_assert (TYPE_INSTANCE_FLAGS (ntype) == TYPE_INSTANCE_FLAGS (type)); | |
dd6bda65 DJ |
751 | } |
752 | ||
c906108c SS |
753 | /* Implement direct support for MEMBER_TYPE in GNU C++. |
754 | May need to construct such a type if this is the first use. | |
755 | The TYPE is the type of the member. The DOMAIN is the type | |
756 | of the aggregate that the member belongs to. */ | |
757 | ||
758 | struct type * | |
0d5de010 | 759 | lookup_memberptr_type (struct type *type, struct type *domain) |
c906108c | 760 | { |
52f0bd74 | 761 | struct type *mtype; |
c906108c | 762 | |
e9bb382b | 763 | mtype = alloc_type_copy (type); |
0d5de010 | 764 | smash_to_memberptr_type (mtype, domain, type); |
c16abbde | 765 | return mtype; |
c906108c SS |
766 | } |
767 | ||
0d5de010 DJ |
768 | /* Return a pointer-to-method type, for a method of type TO_TYPE. */ |
769 | ||
770 | struct type * | |
771 | lookup_methodptr_type (struct type *to_type) | |
772 | { | |
773 | struct type *mtype; | |
774 | ||
e9bb382b | 775 | mtype = alloc_type_copy (to_type); |
0b92b5bb | 776 | smash_to_methodptr_type (mtype, to_type); |
0d5de010 DJ |
777 | return mtype; |
778 | } | |
779 | ||
7ba81444 MS |
780 | /* Allocate a stub method whose return type is TYPE. This apparently |
781 | happens for speed of symbol reading, since parsing out the | |
782 | arguments to the method is cpu-intensive, the way we are doing it. | |
783 | So, we will fill in arguments later. This always returns a fresh | |
784 | type. */ | |
c906108c SS |
785 | |
786 | struct type * | |
fba45db2 | 787 | allocate_stub_method (struct type *type) |
c906108c SS |
788 | { |
789 | struct type *mtype; | |
790 | ||
e9bb382b UW |
791 | mtype = alloc_type_copy (type); |
792 | TYPE_CODE (mtype) = TYPE_CODE_METHOD; | |
793 | TYPE_LENGTH (mtype) = 1; | |
794 | TYPE_STUB (mtype) = 1; | |
c906108c SS |
795 | TYPE_TARGET_TYPE (mtype) = type; |
796 | /* _DOMAIN_TYPE (mtype) = unknown yet */ | |
c16abbde | 797 | return mtype; |
c906108c SS |
798 | } |
799 | ||
729efb13 SA |
800 | /* Create a range type with a dynamic range from LOW_BOUND to |
801 | HIGH_BOUND, inclusive. See create_range_type for further details. */ | |
c906108c SS |
802 | |
803 | struct type * | |
729efb13 SA |
804 | create_range_type (struct type *result_type, struct type *index_type, |
805 | const struct dynamic_prop *low_bound, | |
806 | const struct dynamic_prop *high_bound) | |
c906108c SS |
807 | { |
808 | if (result_type == NULL) | |
e9bb382b | 809 | result_type = alloc_type_copy (index_type); |
c906108c SS |
810 | TYPE_CODE (result_type) = TYPE_CODE_RANGE; |
811 | TYPE_TARGET_TYPE (result_type) = index_type; | |
74a9bb82 | 812 | if (TYPE_STUB (index_type)) |
876cecd0 | 813 | TYPE_TARGET_STUB (result_type) = 1; |
c906108c SS |
814 | else |
815 | TYPE_LENGTH (result_type) = TYPE_LENGTH (check_typedef (index_type)); | |
729efb13 | 816 | |
43bbcdc2 PH |
817 | TYPE_RANGE_DATA (result_type) = (struct range_bounds *) |
818 | TYPE_ZALLOC (result_type, sizeof (struct range_bounds)); | |
729efb13 SA |
819 | TYPE_RANGE_DATA (result_type)->low = *low_bound; |
820 | TYPE_RANGE_DATA (result_type)->high = *high_bound; | |
c906108c | 821 | |
729efb13 | 822 | if (low_bound->kind == PROP_CONST && low_bound->data.const_val >= 0) |
876cecd0 | 823 | TYPE_UNSIGNED (result_type) = 1; |
c906108c | 824 | |
262452ec | 825 | return result_type; |
c906108c SS |
826 | } |
827 | ||
729efb13 SA |
828 | /* Create a range type using either a blank type supplied in |
829 | RESULT_TYPE, or creating a new type, inheriting the objfile from | |
830 | INDEX_TYPE. | |
831 | ||
832 | Indices will be of type INDEX_TYPE, and will range from LOW_BOUND | |
833 | to HIGH_BOUND, inclusive. | |
834 | ||
835 | FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make | |
836 | sure it is TYPE_CODE_UNDEF before we bash it into a range type? */ | |
837 | ||
838 | struct type * | |
839 | create_static_range_type (struct type *result_type, struct type *index_type, | |
840 | LONGEST low_bound, LONGEST high_bound) | |
841 | { | |
842 | struct dynamic_prop low, high; | |
843 | ||
844 | low.kind = PROP_CONST; | |
845 | low.data.const_val = low_bound; | |
846 | ||
847 | high.kind = PROP_CONST; | |
848 | high.data.const_val = high_bound; | |
849 | ||
850 | result_type = create_range_type (result_type, index_type, &low, &high); | |
851 | ||
852 | return result_type; | |
853 | } | |
854 | ||
80180f79 SA |
855 | /* Predicate tests whether BOUNDS are static. Returns 1 if all bounds values |
856 | are static, otherwise returns 0. */ | |
857 | ||
858 | static int | |
859 | has_static_range (const struct range_bounds *bounds) | |
860 | { | |
861 | return (bounds->low.kind == PROP_CONST | |
862 | && bounds->high.kind == PROP_CONST); | |
863 | } | |
864 | ||
865 | ||
7ba81444 MS |
866 | /* Set *LOWP and *HIGHP to the lower and upper bounds of discrete type |
867 | TYPE. Return 1 if type is a range type, 0 if it is discrete (and | |
868 | bounds will fit in LONGEST), or -1 otherwise. */ | |
c906108c SS |
869 | |
870 | int | |
fba45db2 | 871 | get_discrete_bounds (struct type *type, LONGEST *lowp, LONGEST *highp) |
c906108c SS |
872 | { |
873 | CHECK_TYPEDEF (type); | |
874 | switch (TYPE_CODE (type)) | |
875 | { | |
876 | case TYPE_CODE_RANGE: | |
877 | *lowp = TYPE_LOW_BOUND (type); | |
878 | *highp = TYPE_HIGH_BOUND (type); | |
879 | return 1; | |
880 | case TYPE_CODE_ENUM: | |
881 | if (TYPE_NFIELDS (type) > 0) | |
882 | { | |
883 | /* The enums may not be sorted by value, so search all | |
0963b4bd | 884 | entries. */ |
c906108c SS |
885 | int i; |
886 | ||
14e75d8e | 887 | *lowp = *highp = TYPE_FIELD_ENUMVAL (type, 0); |
c906108c SS |
888 | for (i = 0; i < TYPE_NFIELDS (type); i++) |
889 | { | |
14e75d8e JK |
890 | if (TYPE_FIELD_ENUMVAL (type, i) < *lowp) |
891 | *lowp = TYPE_FIELD_ENUMVAL (type, i); | |
892 | if (TYPE_FIELD_ENUMVAL (type, i) > *highp) | |
893 | *highp = TYPE_FIELD_ENUMVAL (type, i); | |
c906108c SS |
894 | } |
895 | ||
7ba81444 | 896 | /* Set unsigned indicator if warranted. */ |
c5aa993b | 897 | if (*lowp >= 0) |
c906108c | 898 | { |
876cecd0 | 899 | TYPE_UNSIGNED (type) = 1; |
c906108c SS |
900 | } |
901 | } | |
902 | else | |
903 | { | |
904 | *lowp = 0; | |
905 | *highp = -1; | |
906 | } | |
907 | return 0; | |
908 | case TYPE_CODE_BOOL: | |
909 | *lowp = 0; | |
910 | *highp = 1; | |
911 | return 0; | |
912 | case TYPE_CODE_INT: | |
c5aa993b | 913 | if (TYPE_LENGTH (type) > sizeof (LONGEST)) /* Too big */ |
c906108c SS |
914 | return -1; |
915 | if (!TYPE_UNSIGNED (type)) | |
916 | { | |
c5aa993b | 917 | *lowp = -(1 << (TYPE_LENGTH (type) * TARGET_CHAR_BIT - 1)); |
c906108c SS |
918 | *highp = -*lowp - 1; |
919 | return 0; | |
920 | } | |
7ba81444 | 921 | /* ... fall through for unsigned ints ... */ |
c906108c SS |
922 | case TYPE_CODE_CHAR: |
923 | *lowp = 0; | |
924 | /* This round-about calculation is to avoid shifting by | |
7b83ea04 | 925 | TYPE_LENGTH (type) * TARGET_CHAR_BIT, which will not work |
7ba81444 | 926 | if TYPE_LENGTH (type) == sizeof (LONGEST). */ |
c906108c SS |
927 | *highp = 1 << (TYPE_LENGTH (type) * TARGET_CHAR_BIT - 1); |
928 | *highp = (*highp - 1) | *highp; | |
929 | return 0; | |
930 | default: | |
931 | return -1; | |
932 | } | |
933 | } | |
934 | ||
dbc98a8b KW |
935 | /* Assuming TYPE is a simple, non-empty array type, compute its upper |
936 | and lower bound. Save the low bound into LOW_BOUND if not NULL. | |
937 | Save the high bound into HIGH_BOUND if not NULL. | |
938 | ||
0963b4bd | 939 | Return 1 if the operation was successful. Return zero otherwise, |
dbc98a8b KW |
940 | in which case the values of LOW_BOUND and HIGH_BOUNDS are unmodified. |
941 | ||
942 | We now simply use get_discrete_bounds call to get the values | |
943 | of the low and high bounds. | |
944 | get_discrete_bounds can return three values: | |
945 | 1, meaning that index is a range, | |
946 | 0, meaning that index is a discrete type, | |
947 | or -1 for failure. */ | |
948 | ||
949 | int | |
950 | get_array_bounds (struct type *type, LONGEST *low_bound, LONGEST *high_bound) | |
951 | { | |
952 | struct type *index = TYPE_INDEX_TYPE (type); | |
953 | LONGEST low = 0; | |
954 | LONGEST high = 0; | |
955 | int res; | |
956 | ||
957 | if (index == NULL) | |
958 | return 0; | |
959 | ||
960 | res = get_discrete_bounds (index, &low, &high); | |
961 | if (res == -1) | |
962 | return 0; | |
963 | ||
964 | /* Check if the array bounds are undefined. */ | |
965 | if (res == 1 | |
966 | && ((low_bound && TYPE_ARRAY_LOWER_BOUND_IS_UNDEFINED (type)) | |
967 | || (high_bound && TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED (type)))) | |
968 | return 0; | |
969 | ||
970 | if (low_bound) | |
971 | *low_bound = low; | |
972 | ||
973 | if (high_bound) | |
974 | *high_bound = high; | |
975 | ||
976 | return 1; | |
977 | } | |
978 | ||
7ba81444 MS |
979 | /* Create an array type using either a blank type supplied in |
980 | RESULT_TYPE, or creating a new type, inheriting the objfile from | |
981 | RANGE_TYPE. | |
c906108c SS |
982 | |
983 | Elements will be of type ELEMENT_TYPE, the indices will be of type | |
984 | RANGE_TYPE. | |
985 | ||
dc53a7ad JB |
986 | If BIT_STRIDE is not zero, build a packed array type whose element |
987 | size is BIT_STRIDE. Otherwise, ignore this parameter. | |
988 | ||
7ba81444 MS |
989 | FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make |
990 | sure it is TYPE_CODE_UNDEF before we bash it into an array | |
991 | type? */ | |
c906108c SS |
992 | |
993 | struct type * | |
dc53a7ad JB |
994 | create_array_type_with_stride (struct type *result_type, |
995 | struct type *element_type, | |
996 | struct type *range_type, | |
997 | unsigned int bit_stride) | |
c906108c | 998 | { |
c906108c | 999 | if (result_type == NULL) |
e9bb382b UW |
1000 | result_type = alloc_type_copy (range_type); |
1001 | ||
c906108c SS |
1002 | TYPE_CODE (result_type) = TYPE_CODE_ARRAY; |
1003 | TYPE_TARGET_TYPE (result_type) = element_type; | |
80180f79 SA |
1004 | if (has_static_range (TYPE_RANGE_DATA (range_type))) |
1005 | { | |
1006 | LONGEST low_bound, high_bound; | |
1007 | ||
1008 | if (get_discrete_bounds (range_type, &low_bound, &high_bound) < 0) | |
1009 | low_bound = high_bound = 0; | |
1010 | CHECK_TYPEDEF (element_type); | |
1011 | /* Be careful when setting the array length. Ada arrays can be | |
1012 | empty arrays with the high_bound being smaller than the low_bound. | |
1013 | In such cases, the array length should be zero. */ | |
1014 | if (high_bound < low_bound) | |
1015 | TYPE_LENGTH (result_type) = 0; | |
1016 | else if (bit_stride > 0) | |
1017 | TYPE_LENGTH (result_type) = | |
1018 | (bit_stride * (high_bound - low_bound + 1) + 7) / 8; | |
1019 | else | |
1020 | TYPE_LENGTH (result_type) = | |
1021 | TYPE_LENGTH (element_type) * (high_bound - low_bound + 1); | |
1022 | } | |
ab0d6e0d | 1023 | else |
80180f79 SA |
1024 | { |
1025 | /* This type is dynamic and its length needs to be computed | |
1026 | on demand. In the meantime, avoid leaving the TYPE_LENGTH | |
1027 | undefined by setting it to zero. Although we are not expected | |
1028 | to trust TYPE_LENGTH in this case, setting the size to zero | |
1029 | allows us to avoid allocating objects of random sizes in case | |
1030 | we accidently do. */ | |
1031 | TYPE_LENGTH (result_type) = 0; | |
1032 | } | |
1033 | ||
c906108c SS |
1034 | TYPE_NFIELDS (result_type) = 1; |
1035 | TYPE_FIELDS (result_type) = | |
1deafd4e | 1036 | (struct field *) TYPE_ZALLOC (result_type, sizeof (struct field)); |
262452ec | 1037 | TYPE_INDEX_TYPE (result_type) = range_type; |
c906108c | 1038 | TYPE_VPTR_FIELDNO (result_type) = -1; |
dc53a7ad JB |
1039 | if (bit_stride > 0) |
1040 | TYPE_FIELD_BITSIZE (result_type, 0) = bit_stride; | |
c906108c | 1041 | |
0963b4bd | 1042 | /* TYPE_FLAG_TARGET_STUB will take care of zero length arrays. */ |
c906108c | 1043 | if (TYPE_LENGTH (result_type) == 0) |
876cecd0 | 1044 | TYPE_TARGET_STUB (result_type) = 1; |
c906108c | 1045 | |
c16abbde | 1046 | return result_type; |
c906108c SS |
1047 | } |
1048 | ||
dc53a7ad JB |
1049 | /* Same as create_array_type_with_stride but with no bit_stride |
1050 | (BIT_STRIDE = 0), thus building an unpacked array. */ | |
1051 | ||
1052 | struct type * | |
1053 | create_array_type (struct type *result_type, | |
1054 | struct type *element_type, | |
1055 | struct type *range_type) | |
1056 | { | |
1057 | return create_array_type_with_stride (result_type, element_type, | |
1058 | range_type, 0); | |
1059 | } | |
1060 | ||
e3506a9f UW |
1061 | struct type * |
1062 | lookup_array_range_type (struct type *element_type, | |
63375b74 | 1063 | LONGEST low_bound, LONGEST high_bound) |
e3506a9f | 1064 | { |
50810684 | 1065 | struct gdbarch *gdbarch = get_type_arch (element_type); |
e3506a9f UW |
1066 | struct type *index_type = builtin_type (gdbarch)->builtin_int; |
1067 | struct type *range_type | |
0c9c3474 | 1068 | = create_static_range_type (NULL, index_type, low_bound, high_bound); |
d8734c88 | 1069 | |
e3506a9f UW |
1070 | return create_array_type (NULL, element_type, range_type); |
1071 | } | |
1072 | ||
7ba81444 MS |
1073 | /* Create a string type using either a blank type supplied in |
1074 | RESULT_TYPE, or creating a new type. String types are similar | |
1075 | enough to array of char types that we can use create_array_type to | |
1076 | build the basic type and then bash it into a string type. | |
c906108c SS |
1077 | |
1078 | For fixed length strings, the range type contains 0 as the lower | |
1079 | bound and the length of the string minus one as the upper bound. | |
1080 | ||
7ba81444 MS |
1081 | FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make |
1082 | sure it is TYPE_CODE_UNDEF before we bash it into a string | |
1083 | type? */ | |
c906108c SS |
1084 | |
1085 | struct type * | |
3b7538c0 UW |
1086 | create_string_type (struct type *result_type, |
1087 | struct type *string_char_type, | |
7ba81444 | 1088 | struct type *range_type) |
c906108c SS |
1089 | { |
1090 | result_type = create_array_type (result_type, | |
f290d38e | 1091 | string_char_type, |
c906108c SS |
1092 | range_type); |
1093 | TYPE_CODE (result_type) = TYPE_CODE_STRING; | |
c16abbde | 1094 | return result_type; |
c906108c SS |
1095 | } |
1096 | ||
e3506a9f UW |
1097 | struct type * |
1098 | lookup_string_range_type (struct type *string_char_type, | |
63375b74 | 1099 | LONGEST low_bound, LONGEST high_bound) |
e3506a9f UW |
1100 | { |
1101 | struct type *result_type; | |
d8734c88 | 1102 | |
e3506a9f UW |
1103 | result_type = lookup_array_range_type (string_char_type, |
1104 | low_bound, high_bound); | |
1105 | TYPE_CODE (result_type) = TYPE_CODE_STRING; | |
1106 | return result_type; | |
1107 | } | |
1108 | ||
c906108c | 1109 | struct type * |
fba45db2 | 1110 | create_set_type (struct type *result_type, struct type *domain_type) |
c906108c | 1111 | { |
c906108c | 1112 | if (result_type == NULL) |
e9bb382b UW |
1113 | result_type = alloc_type_copy (domain_type); |
1114 | ||
c906108c SS |
1115 | TYPE_CODE (result_type) = TYPE_CODE_SET; |
1116 | TYPE_NFIELDS (result_type) = 1; | |
1deafd4e | 1117 | TYPE_FIELDS (result_type) = TYPE_ZALLOC (result_type, sizeof (struct field)); |
c906108c | 1118 | |
74a9bb82 | 1119 | if (!TYPE_STUB (domain_type)) |
c906108c | 1120 | { |
f9780d5b | 1121 | LONGEST low_bound, high_bound, bit_length; |
d8734c88 | 1122 | |
c906108c SS |
1123 | if (get_discrete_bounds (domain_type, &low_bound, &high_bound) < 0) |
1124 | low_bound = high_bound = 0; | |
1125 | bit_length = high_bound - low_bound + 1; | |
1126 | TYPE_LENGTH (result_type) | |
1127 | = (bit_length + TARGET_CHAR_BIT - 1) / TARGET_CHAR_BIT; | |
f9780d5b | 1128 | if (low_bound >= 0) |
876cecd0 | 1129 | TYPE_UNSIGNED (result_type) = 1; |
c906108c SS |
1130 | } |
1131 | TYPE_FIELD_TYPE (result_type, 0) = domain_type; | |
1132 | ||
c16abbde | 1133 | return result_type; |
c906108c SS |
1134 | } |
1135 | ||
ea37ba09 DJ |
1136 | /* Convert ARRAY_TYPE to a vector type. This may modify ARRAY_TYPE |
1137 | and any array types nested inside it. */ | |
1138 | ||
1139 | void | |
1140 | make_vector_type (struct type *array_type) | |
1141 | { | |
1142 | struct type *inner_array, *elt_type; | |
1143 | int flags; | |
1144 | ||
1145 | /* Find the innermost array type, in case the array is | |
1146 | multi-dimensional. */ | |
1147 | inner_array = array_type; | |
1148 | while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array)) == TYPE_CODE_ARRAY) | |
1149 | inner_array = TYPE_TARGET_TYPE (inner_array); | |
1150 | ||
1151 | elt_type = TYPE_TARGET_TYPE (inner_array); | |
1152 | if (TYPE_CODE (elt_type) == TYPE_CODE_INT) | |
1153 | { | |
2844d6b5 | 1154 | flags = TYPE_INSTANCE_FLAGS (elt_type) | TYPE_INSTANCE_FLAG_NOTTEXT; |
ea37ba09 DJ |
1155 | elt_type = make_qualified_type (elt_type, flags, NULL); |
1156 | TYPE_TARGET_TYPE (inner_array) = elt_type; | |
1157 | } | |
1158 | ||
876cecd0 | 1159 | TYPE_VECTOR (array_type) = 1; |
ea37ba09 DJ |
1160 | } |
1161 | ||
794ac428 | 1162 | struct type * |
ac3aafc7 EZ |
1163 | init_vector_type (struct type *elt_type, int n) |
1164 | { | |
1165 | struct type *array_type; | |
d8734c88 | 1166 | |
e3506a9f | 1167 | array_type = lookup_array_range_type (elt_type, 0, n - 1); |
ea37ba09 | 1168 | make_vector_type (array_type); |
ac3aafc7 EZ |
1169 | return array_type; |
1170 | } | |
1171 | ||
0d5de010 DJ |
1172 | /* Smash TYPE to be a type of pointers to members of DOMAIN with type |
1173 | TO_TYPE. A member pointer is a wierd thing -- it amounts to a | |
1174 | typed offset into a struct, e.g. "an int at offset 8". A MEMBER | |
1175 | TYPE doesn't include the offset (that's the value of the MEMBER | |
1176 | itself), but does include the structure type into which it points | |
1177 | (for some reason). | |
c906108c | 1178 | |
7ba81444 MS |
1179 | When "smashing" the type, we preserve the objfile that the old type |
1180 | pointed to, since we aren't changing where the type is actually | |
c906108c SS |
1181 | allocated. */ |
1182 | ||
1183 | void | |
0d5de010 DJ |
1184 | smash_to_memberptr_type (struct type *type, struct type *domain, |
1185 | struct type *to_type) | |
c906108c | 1186 | { |
2fdde8f8 | 1187 | smash_type (type); |
c906108c SS |
1188 | TYPE_TARGET_TYPE (type) = to_type; |
1189 | TYPE_DOMAIN_TYPE (type) = domain; | |
0d5de010 DJ |
1190 | /* Assume that a data member pointer is the same size as a normal |
1191 | pointer. */ | |
50810684 UW |
1192 | TYPE_LENGTH (type) |
1193 | = gdbarch_ptr_bit (get_type_arch (to_type)) / TARGET_CHAR_BIT; | |
0d5de010 | 1194 | TYPE_CODE (type) = TYPE_CODE_MEMBERPTR; |
c906108c SS |
1195 | } |
1196 | ||
0b92b5bb TT |
1197 | /* Smash TYPE to be a type of pointer to methods type TO_TYPE. |
1198 | ||
1199 | When "smashing" the type, we preserve the objfile that the old type | |
1200 | pointed to, since we aren't changing where the type is actually | |
1201 | allocated. */ | |
1202 | ||
1203 | void | |
1204 | smash_to_methodptr_type (struct type *type, struct type *to_type) | |
1205 | { | |
1206 | smash_type (type); | |
1207 | TYPE_TARGET_TYPE (type) = to_type; | |
1208 | TYPE_DOMAIN_TYPE (type) = TYPE_DOMAIN_TYPE (to_type); | |
1209 | TYPE_LENGTH (type) = cplus_method_ptr_size (to_type); | |
1210 | TYPE_CODE (type) = TYPE_CODE_METHODPTR; | |
1211 | } | |
1212 | ||
c906108c SS |
1213 | /* Smash TYPE to be a type of method of DOMAIN with type TO_TYPE. |
1214 | METHOD just means `function that gets an extra "this" argument'. | |
1215 | ||
7ba81444 MS |
1216 | When "smashing" the type, we preserve the objfile that the old type |
1217 | pointed to, since we aren't changing where the type is actually | |
c906108c SS |
1218 | allocated. */ |
1219 | ||
1220 | void | |
fba45db2 | 1221 | smash_to_method_type (struct type *type, struct type *domain, |
ad2f7632 DJ |
1222 | struct type *to_type, struct field *args, |
1223 | int nargs, int varargs) | |
c906108c | 1224 | { |
2fdde8f8 | 1225 | smash_type (type); |
c906108c SS |
1226 | TYPE_TARGET_TYPE (type) = to_type; |
1227 | TYPE_DOMAIN_TYPE (type) = domain; | |
ad2f7632 DJ |
1228 | TYPE_FIELDS (type) = args; |
1229 | TYPE_NFIELDS (type) = nargs; | |
1230 | if (varargs) | |
876cecd0 | 1231 | TYPE_VARARGS (type) = 1; |
c906108c SS |
1232 | TYPE_LENGTH (type) = 1; /* In practice, this is never needed. */ |
1233 | TYPE_CODE (type) = TYPE_CODE_METHOD; | |
1234 | } | |
1235 | ||
1236 | /* Return a typename for a struct/union/enum type without "struct ", | |
1237 | "union ", or "enum ". If the type has a NULL name, return NULL. */ | |
1238 | ||
0d5cff50 | 1239 | const char * |
aa1ee363 | 1240 | type_name_no_tag (const struct type *type) |
c906108c SS |
1241 | { |
1242 | if (TYPE_TAG_NAME (type) != NULL) | |
1243 | return TYPE_TAG_NAME (type); | |
1244 | ||
7ba81444 MS |
1245 | /* Is there code which expects this to return the name if there is |
1246 | no tag name? My guess is that this is mainly used for C++ in | |
1247 | cases where the two will always be the same. */ | |
c906108c SS |
1248 | return TYPE_NAME (type); |
1249 | } | |
1250 | ||
d8228535 JK |
1251 | /* A wrapper of type_name_no_tag which calls error if the type is anonymous. |
1252 | Since GCC PR debug/47510 DWARF provides associated information to detect the | |
1253 | anonymous class linkage name from its typedef. | |
1254 | ||
1255 | Parameter TYPE should not yet have CHECK_TYPEDEF applied, this function will | |
1256 | apply it itself. */ | |
1257 | ||
1258 | const char * | |
1259 | type_name_no_tag_or_error (struct type *type) | |
1260 | { | |
1261 | struct type *saved_type = type; | |
1262 | const char *name; | |
1263 | struct objfile *objfile; | |
1264 | ||
1265 | CHECK_TYPEDEF (type); | |
1266 | ||
1267 | name = type_name_no_tag (type); | |
1268 | if (name != NULL) | |
1269 | return name; | |
1270 | ||
1271 | name = type_name_no_tag (saved_type); | |
1272 | objfile = TYPE_OBJFILE (saved_type); | |
1273 | error (_("Invalid anonymous type %s [in module %s], GCC PR debug/47510 bug?"), | |
4262abfb JK |
1274 | name ? name : "<anonymous>", |
1275 | objfile ? objfile_name (objfile) : "<arch>"); | |
d8228535 JK |
1276 | } |
1277 | ||
7ba81444 MS |
1278 | /* Lookup a typedef or primitive type named NAME, visible in lexical |
1279 | block BLOCK. If NOERR is nonzero, return zero if NAME is not | |
1280 | suitably defined. */ | |
c906108c SS |
1281 | |
1282 | struct type * | |
e6c014f2 | 1283 | lookup_typename (const struct language_defn *language, |
ddd49eee | 1284 | struct gdbarch *gdbarch, const char *name, |
34eaf542 | 1285 | const struct block *block, int noerr) |
c906108c | 1286 | { |
52f0bd74 | 1287 | struct symbol *sym; |
659c9f3a | 1288 | struct type *type; |
c906108c | 1289 | |
774b6a14 | 1290 | sym = lookup_symbol (name, block, VAR_DOMAIN, 0); |
c51fe631 DE |
1291 | if (sym != NULL && SYMBOL_CLASS (sym) == LOC_TYPEDEF) |
1292 | return SYMBOL_TYPE (sym); | |
1293 | ||
659c9f3a DE |
1294 | type = language_lookup_primitive_type_by_name (language, gdbarch, name); |
1295 | if (type) | |
1296 | return type; | |
c51fe631 DE |
1297 | |
1298 | if (noerr) | |
1299 | return NULL; | |
1300 | error (_("No type named %s."), name); | |
c906108c SS |
1301 | } |
1302 | ||
1303 | struct type * | |
e6c014f2 | 1304 | lookup_unsigned_typename (const struct language_defn *language, |
0d5cff50 | 1305 | struct gdbarch *gdbarch, const char *name) |
c906108c SS |
1306 | { |
1307 | char *uns = alloca (strlen (name) + 10); | |
1308 | ||
1309 | strcpy (uns, "unsigned "); | |
1310 | strcpy (uns + 9, name); | |
e6c014f2 | 1311 | return lookup_typename (language, gdbarch, uns, (struct block *) NULL, 0); |
c906108c SS |
1312 | } |
1313 | ||
1314 | struct type * | |
e6c014f2 | 1315 | lookup_signed_typename (const struct language_defn *language, |
0d5cff50 | 1316 | struct gdbarch *gdbarch, const char *name) |
c906108c SS |
1317 | { |
1318 | struct type *t; | |
1319 | char *uns = alloca (strlen (name) + 8); | |
1320 | ||
1321 | strcpy (uns, "signed "); | |
1322 | strcpy (uns + 7, name); | |
e6c014f2 | 1323 | t = lookup_typename (language, gdbarch, uns, (struct block *) NULL, 1); |
7ba81444 | 1324 | /* If we don't find "signed FOO" just try again with plain "FOO". */ |
c906108c SS |
1325 | if (t != NULL) |
1326 | return t; | |
e6c014f2 | 1327 | return lookup_typename (language, gdbarch, name, (struct block *) NULL, 0); |
c906108c SS |
1328 | } |
1329 | ||
1330 | /* Lookup a structure type named "struct NAME", | |
1331 | visible in lexical block BLOCK. */ | |
1332 | ||
1333 | struct type * | |
270140bd | 1334 | lookup_struct (const char *name, const struct block *block) |
c906108c | 1335 | { |
52f0bd74 | 1336 | struct symbol *sym; |
c906108c | 1337 | |
2570f2b7 | 1338 | sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0); |
c906108c SS |
1339 | |
1340 | if (sym == NULL) | |
1341 | { | |
8a3fe4f8 | 1342 | error (_("No struct type named %s."), name); |
c906108c SS |
1343 | } |
1344 | if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_STRUCT) | |
1345 | { | |
7ba81444 MS |
1346 | error (_("This context has class, union or enum %s, not a struct."), |
1347 | name); | |
c906108c SS |
1348 | } |
1349 | return (SYMBOL_TYPE (sym)); | |
1350 | } | |
1351 | ||
1352 | /* Lookup a union type named "union NAME", | |
1353 | visible in lexical block BLOCK. */ | |
1354 | ||
1355 | struct type * | |
270140bd | 1356 | lookup_union (const char *name, const struct block *block) |
c906108c | 1357 | { |
52f0bd74 | 1358 | struct symbol *sym; |
c5aa993b | 1359 | struct type *t; |
c906108c | 1360 | |
2570f2b7 | 1361 | sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0); |
c906108c SS |
1362 | |
1363 | if (sym == NULL) | |
8a3fe4f8 | 1364 | error (_("No union type named %s."), name); |
c906108c | 1365 | |
c5aa993b | 1366 | t = SYMBOL_TYPE (sym); |
c906108c SS |
1367 | |
1368 | if (TYPE_CODE (t) == TYPE_CODE_UNION) | |
c16abbde | 1369 | return t; |
c906108c | 1370 | |
7ba81444 MS |
1371 | /* If we get here, it's not a union. */ |
1372 | error (_("This context has class, struct or enum %s, not a union."), | |
1373 | name); | |
c906108c SS |
1374 | } |
1375 | ||
c906108c SS |
1376 | /* Lookup an enum type named "enum NAME", |
1377 | visible in lexical block BLOCK. */ | |
1378 | ||
1379 | struct type * | |
270140bd | 1380 | lookup_enum (const char *name, const struct block *block) |
c906108c | 1381 | { |
52f0bd74 | 1382 | struct symbol *sym; |
c906108c | 1383 | |
2570f2b7 | 1384 | sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0); |
c906108c SS |
1385 | if (sym == NULL) |
1386 | { | |
8a3fe4f8 | 1387 | error (_("No enum type named %s."), name); |
c906108c SS |
1388 | } |
1389 | if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_ENUM) | |
1390 | { | |
7ba81444 MS |
1391 | error (_("This context has class, struct or union %s, not an enum."), |
1392 | name); | |
c906108c SS |
1393 | } |
1394 | return (SYMBOL_TYPE (sym)); | |
1395 | } | |
1396 | ||
1397 | /* Lookup a template type named "template NAME<TYPE>", | |
1398 | visible in lexical block BLOCK. */ | |
1399 | ||
1400 | struct type * | |
7ba81444 | 1401 | lookup_template_type (char *name, struct type *type, |
270140bd | 1402 | const struct block *block) |
c906108c SS |
1403 | { |
1404 | struct symbol *sym; | |
7ba81444 MS |
1405 | char *nam = (char *) |
1406 | alloca (strlen (name) + strlen (TYPE_NAME (type)) + 4); | |
d8734c88 | 1407 | |
c906108c SS |
1408 | strcpy (nam, name); |
1409 | strcat (nam, "<"); | |
0004e5a2 | 1410 | strcat (nam, TYPE_NAME (type)); |
0963b4bd | 1411 | strcat (nam, " >"); /* FIXME, extra space still introduced in gcc? */ |
c906108c | 1412 | |
2570f2b7 | 1413 | sym = lookup_symbol (nam, block, VAR_DOMAIN, 0); |
c906108c SS |
1414 | |
1415 | if (sym == NULL) | |
1416 | { | |
8a3fe4f8 | 1417 | error (_("No template type named %s."), name); |
c906108c SS |
1418 | } |
1419 | if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_STRUCT) | |
1420 | { | |
7ba81444 MS |
1421 | error (_("This context has class, union or enum %s, not a struct."), |
1422 | name); | |
c906108c SS |
1423 | } |
1424 | return (SYMBOL_TYPE (sym)); | |
1425 | } | |
1426 | ||
7ba81444 MS |
1427 | /* Given a type TYPE, lookup the type of the component of type named |
1428 | NAME. | |
c906108c | 1429 | |
7ba81444 MS |
1430 | TYPE can be either a struct or union, or a pointer or reference to |
1431 | a struct or union. If it is a pointer or reference, its target | |
1432 | type is automatically used. Thus '.' and '->' are interchangable, | |
1433 | as specified for the definitions of the expression element types | |
1434 | STRUCTOP_STRUCT and STRUCTOP_PTR. | |
c906108c SS |
1435 | |
1436 | If NOERR is nonzero, return zero if NAME is not suitably defined. | |
1437 | If NAME is the name of a baseclass type, return that type. */ | |
1438 | ||
1439 | struct type * | |
d7561cbb | 1440 | lookup_struct_elt_type (struct type *type, const char *name, int noerr) |
c906108c SS |
1441 | { |
1442 | int i; | |
c92817ce | 1443 | char *typename; |
c906108c SS |
1444 | |
1445 | for (;;) | |
1446 | { | |
1447 | CHECK_TYPEDEF (type); | |
1448 | if (TYPE_CODE (type) != TYPE_CODE_PTR | |
1449 | && TYPE_CODE (type) != TYPE_CODE_REF) | |
1450 | break; | |
1451 | type = TYPE_TARGET_TYPE (type); | |
1452 | } | |
1453 | ||
687d6395 MS |
1454 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT |
1455 | && TYPE_CODE (type) != TYPE_CODE_UNION) | |
c906108c | 1456 | { |
c92817ce TT |
1457 | typename = type_to_string (type); |
1458 | make_cleanup (xfree, typename); | |
1459 | error (_("Type %s is not a structure or union type."), typename); | |
c906108c SS |
1460 | } |
1461 | ||
1462 | #if 0 | |
7ba81444 MS |
1463 | /* FIXME: This change put in by Michael seems incorrect for the case |
1464 | where the structure tag name is the same as the member name. | |
0963b4bd | 1465 | I.e. when doing "ptype bell->bar" for "struct foo { int bar; int |
7ba81444 | 1466 | foo; } bell;" Disabled by fnf. */ |
c906108c SS |
1467 | { |
1468 | char *typename; | |
1469 | ||
1470 | typename = type_name_no_tag (type); | |
762f08a3 | 1471 | if (typename != NULL && strcmp (typename, name) == 0) |
c906108c SS |
1472 | return type; |
1473 | } | |
1474 | #endif | |
1475 | ||
1476 | for (i = TYPE_NFIELDS (type) - 1; i >= TYPE_N_BASECLASSES (type); i--) | |
1477 | { | |
0d5cff50 | 1478 | const char *t_field_name = TYPE_FIELD_NAME (type, i); |
c906108c | 1479 | |
db577aea | 1480 | if (t_field_name && (strcmp_iw (t_field_name, name) == 0)) |
c906108c SS |
1481 | { |
1482 | return TYPE_FIELD_TYPE (type, i); | |
1483 | } | |
f5a010c0 PM |
1484 | else if (!t_field_name || *t_field_name == '\0') |
1485 | { | |
d8734c88 MS |
1486 | struct type *subtype |
1487 | = lookup_struct_elt_type (TYPE_FIELD_TYPE (type, i), name, 1); | |
1488 | ||
f5a010c0 PM |
1489 | if (subtype != NULL) |
1490 | return subtype; | |
1491 | } | |
c906108c SS |
1492 | } |
1493 | ||
1494 | /* OK, it's not in this class. Recursively check the baseclasses. */ | |
1495 | for (i = TYPE_N_BASECLASSES (type) - 1; i >= 0; i--) | |
1496 | { | |
1497 | struct type *t; | |
1498 | ||
9733fc94 | 1499 | t = lookup_struct_elt_type (TYPE_BASECLASS (type, i), name, 1); |
c906108c SS |
1500 | if (t != NULL) |
1501 | { | |
1502 | return t; | |
1503 | } | |
1504 | } | |
1505 | ||
1506 | if (noerr) | |
1507 | { | |
1508 | return NULL; | |
1509 | } | |
c5aa993b | 1510 | |
c92817ce TT |
1511 | typename = type_to_string (type); |
1512 | make_cleanup (xfree, typename); | |
1513 | error (_("Type %s has no component named %s."), typename, name); | |
c906108c SS |
1514 | } |
1515 | ||
ed3ef339 DE |
1516 | /* Store in *MAX the largest number representable by unsigned integer type |
1517 | TYPE. */ | |
1518 | ||
1519 | void | |
1520 | get_unsigned_type_max (struct type *type, ULONGEST *max) | |
1521 | { | |
1522 | unsigned int n; | |
1523 | ||
1524 | CHECK_TYPEDEF (type); | |
1525 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_INT && TYPE_UNSIGNED (type)); | |
1526 | gdb_assert (TYPE_LENGTH (type) <= sizeof (ULONGEST)); | |
1527 | ||
1528 | /* Written this way to avoid overflow. */ | |
1529 | n = TYPE_LENGTH (type) * TARGET_CHAR_BIT; | |
1530 | *max = ((((ULONGEST) 1 << (n - 1)) - 1) << 1) | 1; | |
1531 | } | |
1532 | ||
1533 | /* Store in *MIN, *MAX the smallest and largest numbers representable by | |
1534 | signed integer type TYPE. */ | |
1535 | ||
1536 | void | |
1537 | get_signed_type_minmax (struct type *type, LONGEST *min, LONGEST *max) | |
1538 | { | |
1539 | unsigned int n; | |
1540 | ||
1541 | CHECK_TYPEDEF (type); | |
1542 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_INT && !TYPE_UNSIGNED (type)); | |
1543 | gdb_assert (TYPE_LENGTH (type) <= sizeof (LONGEST)); | |
1544 | ||
1545 | n = TYPE_LENGTH (type) * TARGET_CHAR_BIT; | |
1546 | *min = -((ULONGEST) 1 << (n - 1)); | |
1547 | *max = ((ULONGEST) 1 << (n - 1)) - 1; | |
1548 | } | |
1549 | ||
81fe8080 DE |
1550 | /* Lookup the vptr basetype/fieldno values for TYPE. |
1551 | If found store vptr_basetype in *BASETYPEP if non-NULL, and return | |
1552 | vptr_fieldno. Also, if found and basetype is from the same objfile, | |
1553 | cache the results. | |
1554 | If not found, return -1 and ignore BASETYPEP. | |
1555 | Callers should be aware that in some cases (for example, | |
c906108c | 1556 | the type or one of its baseclasses is a stub type and we are |
d48cc9dd DJ |
1557 | debugging a .o file, or the compiler uses DWARF-2 and is not GCC), |
1558 | this function will not be able to find the | |
7ba81444 | 1559 | virtual function table pointer, and vptr_fieldno will remain -1 and |
81fe8080 | 1560 | vptr_basetype will remain NULL or incomplete. */ |
c906108c | 1561 | |
81fe8080 DE |
1562 | int |
1563 | get_vptr_fieldno (struct type *type, struct type **basetypep) | |
c906108c SS |
1564 | { |
1565 | CHECK_TYPEDEF (type); | |
1566 | ||
1567 | if (TYPE_VPTR_FIELDNO (type) < 0) | |
1568 | { | |
1569 | int i; | |
1570 | ||
7ba81444 MS |
1571 | /* We must start at zero in case the first (and only) baseclass |
1572 | is virtual (and hence we cannot share the table pointer). */ | |
c906108c SS |
1573 | for (i = 0; i < TYPE_N_BASECLASSES (type); i++) |
1574 | { | |
81fe8080 DE |
1575 | struct type *baseclass = check_typedef (TYPE_BASECLASS (type, i)); |
1576 | int fieldno; | |
1577 | struct type *basetype; | |
1578 | ||
1579 | fieldno = get_vptr_fieldno (baseclass, &basetype); | |
1580 | if (fieldno >= 0) | |
c906108c | 1581 | { |
81fe8080 | 1582 | /* If the type comes from a different objfile we can't cache |
0963b4bd | 1583 | it, it may have a different lifetime. PR 2384 */ |
5ef73790 | 1584 | if (TYPE_OBJFILE (type) == TYPE_OBJFILE (basetype)) |
81fe8080 DE |
1585 | { |
1586 | TYPE_VPTR_FIELDNO (type) = fieldno; | |
1587 | TYPE_VPTR_BASETYPE (type) = basetype; | |
1588 | } | |
1589 | if (basetypep) | |
1590 | *basetypep = basetype; | |
1591 | return fieldno; | |
c906108c SS |
1592 | } |
1593 | } | |
81fe8080 DE |
1594 | |
1595 | /* Not found. */ | |
1596 | return -1; | |
1597 | } | |
1598 | else | |
1599 | { | |
1600 | if (basetypep) | |
1601 | *basetypep = TYPE_VPTR_BASETYPE (type); | |
1602 | return TYPE_VPTR_FIELDNO (type); | |
c906108c SS |
1603 | } |
1604 | } | |
1605 | ||
44e1a9eb DJ |
1606 | static void |
1607 | stub_noname_complaint (void) | |
1608 | { | |
e2e0b3e5 | 1609 | complaint (&symfile_complaints, _("stub type has NULL name")); |
44e1a9eb DJ |
1610 | } |
1611 | ||
d98b7a16 | 1612 | /* Worker for is_dynamic_type. */ |
80180f79 | 1613 | |
d98b7a16 TT |
1614 | static int |
1615 | is_dynamic_type_internal (struct type *type, int top_level) | |
80180f79 SA |
1616 | { |
1617 | type = check_typedef (type); | |
1618 | ||
d98b7a16 TT |
1619 | /* We only want to recognize references at the outermost level. */ |
1620 | if (top_level && TYPE_CODE (type) == TYPE_CODE_REF) | |
80180f79 SA |
1621 | type = check_typedef (TYPE_TARGET_TYPE (type)); |
1622 | ||
1623 | switch (TYPE_CODE (type)) | |
1624 | { | |
6f8a3220 JB |
1625 | case TYPE_CODE_RANGE: |
1626 | return !has_static_range (TYPE_RANGE_DATA (type)); | |
6f8a3220 | 1627 | |
80180f79 SA |
1628 | case TYPE_CODE_ARRAY: |
1629 | { | |
80180f79 | 1630 | gdb_assert (TYPE_NFIELDS (type) == 1); |
6f8a3220 JB |
1631 | |
1632 | /* The array is dynamic if either the bounds are dynamic, | |
1633 | or the elements it contains have a dynamic contents. */ | |
d98b7a16 | 1634 | if (is_dynamic_type_internal (TYPE_INDEX_TYPE (type), 0)) |
80180f79 | 1635 | return 1; |
d98b7a16 | 1636 | return is_dynamic_type_internal (TYPE_TARGET_TYPE (type), 0); |
80180f79 | 1637 | } |
012370f6 TT |
1638 | |
1639 | case TYPE_CODE_STRUCT: | |
1640 | case TYPE_CODE_UNION: | |
1641 | { | |
1642 | int i; | |
1643 | ||
1644 | for (i = 0; i < TYPE_NFIELDS (type); ++i) | |
1645 | if (!field_is_static (&TYPE_FIELD (type, i)) | |
d98b7a16 | 1646 | && is_dynamic_type_internal (TYPE_FIELD_TYPE (type, i), 0)) |
012370f6 TT |
1647 | return 1; |
1648 | } | |
1649 | break; | |
80180f79 | 1650 | } |
92e2a17f TT |
1651 | |
1652 | return 0; | |
80180f79 SA |
1653 | } |
1654 | ||
d98b7a16 TT |
1655 | /* See gdbtypes.h. */ |
1656 | ||
1657 | int | |
1658 | is_dynamic_type (struct type *type) | |
1659 | { | |
1660 | return is_dynamic_type_internal (type, 1); | |
1661 | } | |
1662 | ||
1663 | static struct type *resolve_dynamic_type_internal (struct type *type, | |
1664 | CORE_ADDR addr, | |
1665 | int top_level); | |
1666 | ||
d190df30 JB |
1667 | /* Given a dynamic range type (dyn_range_type), return a static version |
1668 | of that type. */ | |
1669 | ||
80180f79 | 1670 | static struct type * |
1cfdf534 | 1671 | resolve_dynamic_range (struct type *dyn_range_type) |
80180f79 SA |
1672 | { |
1673 | CORE_ADDR value; | |
6f8a3220 | 1674 | struct type *static_range_type; |
80180f79 SA |
1675 | const struct dynamic_prop *prop; |
1676 | const struct dwarf2_locexpr_baton *baton; | |
1677 | struct dynamic_prop low_bound, high_bound; | |
1678 | ||
6f8a3220 | 1679 | gdb_assert (TYPE_CODE (dyn_range_type) == TYPE_CODE_RANGE); |
80180f79 | 1680 | |
6f8a3220 | 1681 | prop = &TYPE_RANGE_DATA (dyn_range_type)->low; |
1cfdf534 | 1682 | if (dwarf2_evaluate_property (prop, &value)) |
80180f79 SA |
1683 | { |
1684 | low_bound.kind = PROP_CONST; | |
1685 | low_bound.data.const_val = value; | |
1686 | } | |
1687 | else | |
1688 | { | |
1689 | low_bound.kind = PROP_UNDEFINED; | |
1690 | low_bound.data.const_val = 0; | |
1691 | } | |
1692 | ||
6f8a3220 | 1693 | prop = &TYPE_RANGE_DATA (dyn_range_type)->high; |
1cfdf534 | 1694 | if (dwarf2_evaluate_property (prop, &value)) |
80180f79 SA |
1695 | { |
1696 | high_bound.kind = PROP_CONST; | |
1697 | high_bound.data.const_val = value; | |
c451ebe5 | 1698 | |
6f8a3220 | 1699 | if (TYPE_RANGE_DATA (dyn_range_type)->flag_upper_bound_is_count) |
c451ebe5 SA |
1700 | high_bound.data.const_val |
1701 | = low_bound.data.const_val + high_bound.data.const_val - 1; | |
80180f79 SA |
1702 | } |
1703 | else | |
1704 | { | |
1705 | high_bound.kind = PROP_UNDEFINED; | |
1706 | high_bound.data.const_val = 0; | |
1707 | } | |
1708 | ||
6f8a3220 JB |
1709 | static_range_type = create_range_type (copy_type (dyn_range_type), |
1710 | TYPE_TARGET_TYPE (dyn_range_type), | |
1711 | &low_bound, &high_bound); | |
1712 | TYPE_RANGE_DATA (static_range_type)->flag_bound_evaluated = 1; | |
1713 | return static_range_type; | |
1714 | } | |
1715 | ||
1716 | /* Resolves dynamic bound values of an array type TYPE to static ones. | |
1717 | ADDRESS might be needed to resolve the subrange bounds, it is the location | |
1718 | of the associated array. */ | |
1719 | ||
1720 | static struct type * | |
1cfdf534 | 1721 | resolve_dynamic_array (struct type *type) |
6f8a3220 JB |
1722 | { |
1723 | CORE_ADDR value; | |
1724 | struct type *elt_type; | |
1725 | struct type *range_type; | |
1726 | struct type *ary_dim; | |
1727 | ||
1728 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_ARRAY); | |
1729 | ||
1730 | elt_type = type; | |
1731 | range_type = check_typedef (TYPE_INDEX_TYPE (elt_type)); | |
1cfdf534 | 1732 | range_type = resolve_dynamic_range (range_type); |
6f8a3220 | 1733 | |
80180f79 SA |
1734 | ary_dim = check_typedef (TYPE_TARGET_TYPE (elt_type)); |
1735 | ||
1736 | if (ary_dim != NULL && TYPE_CODE (ary_dim) == TYPE_CODE_ARRAY) | |
1cfdf534 | 1737 | elt_type = resolve_dynamic_array (TYPE_TARGET_TYPE (type)); |
80180f79 SA |
1738 | else |
1739 | elt_type = TYPE_TARGET_TYPE (type); | |
1740 | ||
80180f79 SA |
1741 | return create_array_type (copy_type (type), |
1742 | elt_type, | |
1743 | range_type); | |
1744 | } | |
1745 | ||
012370f6 TT |
1746 | /* Resolve dynamic bounds of members of the union TYPE to static |
1747 | bounds. */ | |
1748 | ||
1749 | static struct type * | |
1750 | resolve_dynamic_union (struct type *type, CORE_ADDR addr) | |
1751 | { | |
1752 | struct type *resolved_type; | |
1753 | int i; | |
1754 | unsigned int max_len = 0; | |
1755 | ||
1756 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_UNION); | |
1757 | ||
1758 | resolved_type = copy_type (type); | |
1759 | TYPE_FIELDS (resolved_type) | |
1760 | = TYPE_ALLOC (resolved_type, | |
1761 | TYPE_NFIELDS (resolved_type) * sizeof (struct field)); | |
1762 | memcpy (TYPE_FIELDS (resolved_type), | |
1763 | TYPE_FIELDS (type), | |
1764 | TYPE_NFIELDS (resolved_type) * sizeof (struct field)); | |
1765 | for (i = 0; i < TYPE_NFIELDS (resolved_type); ++i) | |
1766 | { | |
1767 | struct type *t; | |
1768 | ||
1769 | if (field_is_static (&TYPE_FIELD (type, i))) | |
1770 | continue; | |
1771 | ||
d98b7a16 TT |
1772 | t = resolve_dynamic_type_internal (TYPE_FIELD_TYPE (resolved_type, i), |
1773 | addr, 0); | |
012370f6 TT |
1774 | TYPE_FIELD_TYPE (resolved_type, i) = t; |
1775 | if (TYPE_LENGTH (t) > max_len) | |
1776 | max_len = TYPE_LENGTH (t); | |
1777 | } | |
1778 | ||
1779 | TYPE_LENGTH (resolved_type) = max_len; | |
1780 | return resolved_type; | |
1781 | } | |
1782 | ||
1783 | /* Resolve dynamic bounds of members of the struct TYPE to static | |
1784 | bounds. */ | |
1785 | ||
1786 | static struct type * | |
1787 | resolve_dynamic_struct (struct type *type, CORE_ADDR addr) | |
1788 | { | |
1789 | struct type *resolved_type; | |
1790 | int i; | |
6908c509 | 1791 | unsigned resolved_type_bit_length = 0; |
012370f6 TT |
1792 | |
1793 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_STRUCT); | |
1794 | gdb_assert (TYPE_NFIELDS (type) > 0); | |
1795 | ||
1796 | resolved_type = copy_type (type); | |
1797 | TYPE_FIELDS (resolved_type) | |
1798 | = TYPE_ALLOC (resolved_type, | |
1799 | TYPE_NFIELDS (resolved_type) * sizeof (struct field)); | |
1800 | memcpy (TYPE_FIELDS (resolved_type), | |
1801 | TYPE_FIELDS (type), | |
1802 | TYPE_NFIELDS (resolved_type) * sizeof (struct field)); | |
1803 | for (i = 0; i < TYPE_NFIELDS (resolved_type); ++i) | |
1804 | { | |
6908c509 | 1805 | unsigned new_bit_length; |
012370f6 TT |
1806 | |
1807 | if (field_is_static (&TYPE_FIELD (type, i))) | |
1808 | continue; | |
1809 | ||
6908c509 JB |
1810 | TYPE_FIELD_TYPE (resolved_type, i) |
1811 | = resolve_dynamic_type_internal (TYPE_FIELD_TYPE (resolved_type, i), | |
d98b7a16 | 1812 | addr, 0); |
012370f6 | 1813 | |
6908c509 JB |
1814 | /* As we know this field is not a static field, the field's |
1815 | field_loc_kind should be FIELD_LOC_KIND_BITPOS. Verify | |
1816 | this is the case, but only trigger a simple error rather | |
1817 | than an internal error if that fails. While failing | |
1818 | that verification indicates a bug in our code, the error | |
1819 | is not severe enough to suggest to the user he stops | |
1820 | his debugging session because of it. */ | |
1821 | if (TYPE_FIELD_LOC_KIND (resolved_type, i) != FIELD_LOC_KIND_BITPOS) | |
1822 | error (_("Cannot determine struct field location" | |
1823 | " (invalid location kind)")); | |
1824 | new_bit_length = TYPE_FIELD_BITPOS (resolved_type, i); | |
1825 | if (TYPE_FIELD_BITSIZE (resolved_type, i) != 0) | |
1826 | new_bit_length += TYPE_FIELD_BITSIZE (resolved_type, i); | |
1827 | else | |
1828 | new_bit_length += (TYPE_LENGTH (TYPE_FIELD_TYPE (resolved_type, i)) | |
1829 | * TARGET_CHAR_BIT); | |
1830 | ||
1831 | /* Normally, we would use the position and size of the last field | |
1832 | to determine the size of the enclosing structure. But GCC seems | |
1833 | to be encoding the position of some fields incorrectly when | |
1834 | the struct contains a dynamic field that is not placed last. | |
1835 | So we compute the struct size based on the field that has | |
1836 | the highest position + size - probably the best we can do. */ | |
1837 | if (new_bit_length > resolved_type_bit_length) | |
1838 | resolved_type_bit_length = new_bit_length; | |
012370f6 TT |
1839 | } |
1840 | ||
012370f6 | 1841 | TYPE_LENGTH (resolved_type) |
6908c509 JB |
1842 | = (resolved_type_bit_length + TARGET_CHAR_BIT - 1) / TARGET_CHAR_BIT; |
1843 | ||
012370f6 TT |
1844 | return resolved_type; |
1845 | } | |
1846 | ||
d98b7a16 | 1847 | /* Worker for resolved_dynamic_type. */ |
80180f79 | 1848 | |
d98b7a16 TT |
1849 | static struct type * |
1850 | resolve_dynamic_type_internal (struct type *type, CORE_ADDR addr, | |
1851 | int top_level) | |
80180f79 SA |
1852 | { |
1853 | struct type *real_type = check_typedef (type); | |
6f8a3220 | 1854 | struct type *resolved_type = type; |
80180f79 | 1855 | |
d98b7a16 | 1856 | if (!is_dynamic_type_internal (real_type, top_level)) |
80180f79 SA |
1857 | return type; |
1858 | ||
6f8a3220 JB |
1859 | switch (TYPE_CODE (type)) |
1860 | { | |
1861 | case TYPE_CODE_TYPEDEF: | |
1862 | resolved_type = copy_type (type); | |
1863 | TYPE_TARGET_TYPE (resolved_type) | |
d98b7a16 TT |
1864 | = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (type), addr, |
1865 | top_level); | |
6f8a3220 JB |
1866 | break; |
1867 | ||
1868 | case TYPE_CODE_REF: | |
1869 | { | |
1870 | CORE_ADDR target_addr = read_memory_typed_address (addr, type); | |
1871 | ||
1872 | resolved_type = copy_type (type); | |
1873 | TYPE_TARGET_TYPE (resolved_type) | |
d98b7a16 TT |
1874 | = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (type), |
1875 | target_addr, top_level); | |
6f8a3220 JB |
1876 | break; |
1877 | } | |
1878 | ||
1879 | case TYPE_CODE_ARRAY: | |
1cfdf534 | 1880 | resolved_type = resolve_dynamic_array (type); |
6f8a3220 JB |
1881 | break; |
1882 | ||
1883 | case TYPE_CODE_RANGE: | |
1cfdf534 | 1884 | resolved_type = resolve_dynamic_range (type); |
6f8a3220 | 1885 | break; |
012370f6 TT |
1886 | |
1887 | case TYPE_CODE_UNION: | |
1888 | resolved_type = resolve_dynamic_union (type, addr); | |
1889 | break; | |
1890 | ||
1891 | case TYPE_CODE_STRUCT: | |
1892 | resolved_type = resolve_dynamic_struct (type, addr); | |
1893 | break; | |
6f8a3220 | 1894 | } |
80180f79 SA |
1895 | |
1896 | return resolved_type; | |
1897 | } | |
1898 | ||
d98b7a16 TT |
1899 | /* See gdbtypes.h */ |
1900 | ||
1901 | struct type * | |
1902 | resolve_dynamic_type (struct type *type, CORE_ADDR addr) | |
1903 | { | |
1904 | return resolve_dynamic_type_internal (type, addr, 1); | |
1905 | } | |
1906 | ||
92163a10 JK |
1907 | /* Find the real type of TYPE. This function returns the real type, |
1908 | after removing all layers of typedefs, and completing opaque or stub | |
1909 | types. Completion changes the TYPE argument, but stripping of | |
1910 | typedefs does not. | |
1911 | ||
1912 | Instance flags (e.g. const/volatile) are preserved as typedefs are | |
1913 | stripped. If necessary a new qualified form of the underlying type | |
1914 | is created. | |
1915 | ||
1916 | NOTE: This will return a typedef if TYPE_TARGET_TYPE for the typedef has | |
1917 | not been computed and we're either in the middle of reading symbols, or | |
1918 | there was no name for the typedef in the debug info. | |
1919 | ||
9bc118a5 DE |
1920 | NOTE: Lookup of opaque types can throw errors for invalid symbol files. |
1921 | QUITs in the symbol reading code can also throw. | |
1922 | Thus this function can throw an exception. | |
1923 | ||
92163a10 JK |
1924 | If TYPE is a TYPE_CODE_TYPEDEF, its length is updated to the length of |
1925 | the target type. | |
c906108c SS |
1926 | |
1927 | If this is a stubbed struct (i.e. declared as struct foo *), see if | |
0963b4bd | 1928 | we can find a full definition in some other file. If so, copy this |
7ba81444 MS |
1929 | definition, so we can use it in future. There used to be a comment |
1930 | (but not any code) that if we don't find a full definition, we'd | |
1931 | set a flag so we don't spend time in the future checking the same | |
1932 | type. That would be a mistake, though--we might load in more | |
92163a10 | 1933 | symbols which contain a full definition for the type. */ |
c906108c SS |
1934 | |
1935 | struct type * | |
a02fd225 | 1936 | check_typedef (struct type *type) |
c906108c SS |
1937 | { |
1938 | struct type *orig_type = type; | |
92163a10 JK |
1939 | /* While we're removing typedefs, we don't want to lose qualifiers. |
1940 | E.g., const/volatile. */ | |
1941 | int instance_flags = TYPE_INSTANCE_FLAGS (type); | |
a02fd225 | 1942 | |
423c0af8 MS |
1943 | gdb_assert (type); |
1944 | ||
c906108c SS |
1945 | while (TYPE_CODE (type) == TYPE_CODE_TYPEDEF) |
1946 | { | |
1947 | if (!TYPE_TARGET_TYPE (type)) | |
1948 | { | |
0d5cff50 | 1949 | const char *name; |
c906108c SS |
1950 | struct symbol *sym; |
1951 | ||
1952 | /* It is dangerous to call lookup_symbol if we are currently | |
7ba81444 | 1953 | reading a symtab. Infinite recursion is one danger. */ |
c906108c | 1954 | if (currently_reading_symtab) |
92163a10 | 1955 | return make_qualified_type (type, instance_flags, NULL); |
c906108c SS |
1956 | |
1957 | name = type_name_no_tag (type); | |
7ba81444 MS |
1958 | /* FIXME: shouldn't we separately check the TYPE_NAME and |
1959 | the TYPE_TAG_NAME, and look in STRUCT_DOMAIN and/or | |
1960 | VAR_DOMAIN as appropriate? (this code was written before | |
1961 | TYPE_NAME and TYPE_TAG_NAME were separate). */ | |
c906108c SS |
1962 | if (name == NULL) |
1963 | { | |
23136709 | 1964 | stub_noname_complaint (); |
92163a10 | 1965 | return make_qualified_type (type, instance_flags, NULL); |
c906108c | 1966 | } |
2570f2b7 | 1967 | sym = lookup_symbol (name, 0, STRUCT_DOMAIN, 0); |
c906108c SS |
1968 | if (sym) |
1969 | TYPE_TARGET_TYPE (type) = SYMBOL_TYPE (sym); | |
7ba81444 | 1970 | else /* TYPE_CODE_UNDEF */ |
e9bb382b | 1971 | TYPE_TARGET_TYPE (type) = alloc_type_arch (get_type_arch (type)); |
c906108c SS |
1972 | } |
1973 | type = TYPE_TARGET_TYPE (type); | |
c906108c | 1974 | |
92163a10 JK |
1975 | /* Preserve the instance flags as we traverse down the typedef chain. |
1976 | ||
1977 | Handling address spaces/classes is nasty, what do we do if there's a | |
1978 | conflict? | |
1979 | E.g., what if an outer typedef marks the type as class_1 and an inner | |
1980 | typedef marks the type as class_2? | |
1981 | This is the wrong place to do such error checking. We leave it to | |
1982 | the code that created the typedef in the first place to flag the | |
1983 | error. We just pick the outer address space (akin to letting the | |
1984 | outer cast in a chain of casting win), instead of assuming | |
1985 | "it can't happen". */ | |
1986 | { | |
1987 | const int ALL_SPACES = (TYPE_INSTANCE_FLAG_CODE_SPACE | |
1988 | | TYPE_INSTANCE_FLAG_DATA_SPACE); | |
1989 | const int ALL_CLASSES = TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL; | |
1990 | int new_instance_flags = TYPE_INSTANCE_FLAGS (type); | |
1991 | ||
1992 | /* Treat code vs data spaces and address classes separately. */ | |
1993 | if ((instance_flags & ALL_SPACES) != 0) | |
1994 | new_instance_flags &= ~ALL_SPACES; | |
1995 | if ((instance_flags & ALL_CLASSES) != 0) | |
1996 | new_instance_flags &= ~ALL_CLASSES; | |
1997 | ||
1998 | instance_flags |= new_instance_flags; | |
1999 | } | |
2000 | } | |
a02fd225 | 2001 | |
7ba81444 MS |
2002 | /* If this is a struct/class/union with no fields, then check |
2003 | whether a full definition exists somewhere else. This is for | |
2004 | systems where a type definition with no fields is issued for such | |
2005 | types, instead of identifying them as stub types in the first | |
2006 | place. */ | |
c5aa993b | 2007 | |
7ba81444 MS |
2008 | if (TYPE_IS_OPAQUE (type) |
2009 | && opaque_type_resolution | |
2010 | && !currently_reading_symtab) | |
c906108c | 2011 | { |
0d5cff50 | 2012 | const char *name = type_name_no_tag (type); |
c5aa993b | 2013 | struct type *newtype; |
d8734c88 | 2014 | |
c906108c SS |
2015 | if (name == NULL) |
2016 | { | |
23136709 | 2017 | stub_noname_complaint (); |
92163a10 | 2018 | return make_qualified_type (type, instance_flags, NULL); |
c906108c SS |
2019 | } |
2020 | newtype = lookup_transparent_type (name); | |
ad766c0a | 2021 | |
c906108c | 2022 | if (newtype) |
ad766c0a | 2023 | { |
7ba81444 MS |
2024 | /* If the resolved type and the stub are in the same |
2025 | objfile, then replace the stub type with the real deal. | |
2026 | But if they're in separate objfiles, leave the stub | |
2027 | alone; we'll just look up the transparent type every time | |
2028 | we call check_typedef. We can't create pointers between | |
2029 | types allocated to different objfiles, since they may | |
2030 | have different lifetimes. Trying to copy NEWTYPE over to | |
2031 | TYPE's objfile is pointless, too, since you'll have to | |
2032 | move over any other types NEWTYPE refers to, which could | |
2033 | be an unbounded amount of stuff. */ | |
ad766c0a | 2034 | if (TYPE_OBJFILE (newtype) == TYPE_OBJFILE (type)) |
92163a10 JK |
2035 | type = make_qualified_type (newtype, |
2036 | TYPE_INSTANCE_FLAGS (type), | |
2037 | type); | |
ad766c0a JB |
2038 | else |
2039 | type = newtype; | |
2040 | } | |
c906108c | 2041 | } |
7ba81444 MS |
2042 | /* Otherwise, rely on the stub flag being set for opaque/stubbed |
2043 | types. */ | |
74a9bb82 | 2044 | else if (TYPE_STUB (type) && !currently_reading_symtab) |
c906108c | 2045 | { |
0d5cff50 | 2046 | const char *name = type_name_no_tag (type); |
c906108c | 2047 | /* FIXME: shouldn't we separately check the TYPE_NAME and the |
176620f1 | 2048 | TYPE_TAG_NAME, and look in STRUCT_DOMAIN and/or VAR_DOMAIN |
7b83ea04 AC |
2049 | as appropriate? (this code was written before TYPE_NAME and |
2050 | TYPE_TAG_NAME were separate). */ | |
c906108c | 2051 | struct symbol *sym; |
d8734c88 | 2052 | |
c906108c SS |
2053 | if (name == NULL) |
2054 | { | |
23136709 | 2055 | stub_noname_complaint (); |
92163a10 | 2056 | return make_qualified_type (type, instance_flags, NULL); |
c906108c | 2057 | } |
2570f2b7 | 2058 | sym = lookup_symbol (name, 0, STRUCT_DOMAIN, 0); |
c906108c | 2059 | if (sym) |
c26f2453 JB |
2060 | { |
2061 | /* Same as above for opaque types, we can replace the stub | |
92163a10 | 2062 | with the complete type only if they are in the same |
c26f2453 JB |
2063 | objfile. */ |
2064 | if (TYPE_OBJFILE (SYMBOL_TYPE(sym)) == TYPE_OBJFILE (type)) | |
92163a10 JK |
2065 | type = make_qualified_type (SYMBOL_TYPE (sym), |
2066 | TYPE_INSTANCE_FLAGS (type), | |
2067 | type); | |
c26f2453 JB |
2068 | else |
2069 | type = SYMBOL_TYPE (sym); | |
2070 | } | |
c906108c SS |
2071 | } |
2072 | ||
74a9bb82 | 2073 | if (TYPE_TARGET_STUB (type)) |
c906108c SS |
2074 | { |
2075 | struct type *range_type; | |
2076 | struct type *target_type = check_typedef (TYPE_TARGET_TYPE (type)); | |
2077 | ||
74a9bb82 | 2078 | if (TYPE_STUB (target_type) || TYPE_TARGET_STUB (target_type)) |
c5aa993b | 2079 | { |
73e2eb35 | 2080 | /* Nothing we can do. */ |
c5aa993b | 2081 | } |
c906108c SS |
2082 | else if (TYPE_CODE (type) == TYPE_CODE_RANGE) |
2083 | { | |
2084 | TYPE_LENGTH (type) = TYPE_LENGTH (target_type); | |
876cecd0 | 2085 | TYPE_TARGET_STUB (type) = 0; |
c906108c SS |
2086 | } |
2087 | } | |
92163a10 JK |
2088 | |
2089 | type = make_qualified_type (type, instance_flags, NULL); | |
2090 | ||
7ba81444 | 2091 | /* Cache TYPE_LENGTH for future use. */ |
c906108c | 2092 | TYPE_LENGTH (orig_type) = TYPE_LENGTH (type); |
92163a10 | 2093 | |
c906108c SS |
2094 | return type; |
2095 | } | |
2096 | ||
7ba81444 | 2097 | /* Parse a type expression in the string [P..P+LENGTH). If an error |
48319d1f | 2098 | occurs, silently return a void type. */ |
c91ecb25 | 2099 | |
b9362cc7 | 2100 | static struct type * |
48319d1f | 2101 | safe_parse_type (struct gdbarch *gdbarch, char *p, int length) |
c91ecb25 ND |
2102 | { |
2103 | struct ui_file *saved_gdb_stderr; | |
34365054 | 2104 | struct type *type = NULL; /* Initialize to keep gcc happy. */ |
8e7b59a5 | 2105 | volatile struct gdb_exception except; |
c91ecb25 | 2106 | |
7ba81444 | 2107 | /* Suppress error messages. */ |
c91ecb25 ND |
2108 | saved_gdb_stderr = gdb_stderr; |
2109 | gdb_stderr = ui_file_new (); | |
2110 | ||
7ba81444 | 2111 | /* Call parse_and_eval_type() without fear of longjmp()s. */ |
8e7b59a5 KS |
2112 | TRY_CATCH (except, RETURN_MASK_ERROR) |
2113 | { | |
2114 | type = parse_and_eval_type (p, length); | |
2115 | } | |
2116 | ||
2117 | if (except.reason < 0) | |
48319d1f | 2118 | type = builtin_type (gdbarch)->builtin_void; |
c91ecb25 | 2119 | |
7ba81444 | 2120 | /* Stop suppressing error messages. */ |
c91ecb25 ND |
2121 | ui_file_delete (gdb_stderr); |
2122 | gdb_stderr = saved_gdb_stderr; | |
2123 | ||
2124 | return type; | |
2125 | } | |
2126 | ||
c906108c SS |
2127 | /* Ugly hack to convert method stubs into method types. |
2128 | ||
7ba81444 MS |
2129 | He ain't kiddin'. This demangles the name of the method into a |
2130 | string including argument types, parses out each argument type, | |
2131 | generates a string casting a zero to that type, evaluates the | |
2132 | string, and stuffs the resulting type into an argtype vector!!! | |
2133 | Then it knows the type of the whole function (including argument | |
2134 | types for overloading), which info used to be in the stab's but was | |
2135 | removed to hack back the space required for them. */ | |
c906108c | 2136 | |
de17c821 | 2137 | static void |
fba45db2 | 2138 | check_stub_method (struct type *type, int method_id, int signature_id) |
c906108c | 2139 | { |
50810684 | 2140 | struct gdbarch *gdbarch = get_type_arch (type); |
c906108c SS |
2141 | struct fn_field *f; |
2142 | char *mangled_name = gdb_mangle_name (type, method_id, signature_id); | |
8de20a37 TT |
2143 | char *demangled_name = gdb_demangle (mangled_name, |
2144 | DMGL_PARAMS | DMGL_ANSI); | |
c906108c SS |
2145 | char *argtypetext, *p; |
2146 | int depth = 0, argcount = 1; | |
ad2f7632 | 2147 | struct field *argtypes; |
c906108c SS |
2148 | struct type *mtype; |
2149 | ||
2150 | /* Make sure we got back a function string that we can use. */ | |
2151 | if (demangled_name) | |
2152 | p = strchr (demangled_name, '('); | |
502dcf4e AC |
2153 | else |
2154 | p = NULL; | |
c906108c SS |
2155 | |
2156 | if (demangled_name == NULL || p == NULL) | |
7ba81444 MS |
2157 | error (_("Internal: Cannot demangle mangled name `%s'."), |
2158 | mangled_name); | |
c906108c SS |
2159 | |
2160 | /* Now, read in the parameters that define this type. */ | |
2161 | p += 1; | |
2162 | argtypetext = p; | |
2163 | while (*p) | |
2164 | { | |
070ad9f0 | 2165 | if (*p == '(' || *p == '<') |
c906108c SS |
2166 | { |
2167 | depth += 1; | |
2168 | } | |
070ad9f0 | 2169 | else if (*p == ')' || *p == '>') |
c906108c SS |
2170 | { |
2171 | depth -= 1; | |
2172 | } | |
2173 | else if (*p == ',' && depth == 0) | |
2174 | { | |
2175 | argcount += 1; | |
2176 | } | |
2177 | ||
2178 | p += 1; | |
2179 | } | |
2180 | ||
ad2f7632 DJ |
2181 | /* If we read one argument and it was ``void'', don't count it. */ |
2182 | if (strncmp (argtypetext, "(void)", 6) == 0) | |
2183 | argcount -= 1; | |
c906108c | 2184 | |
ad2f7632 DJ |
2185 | /* We need one extra slot, for the THIS pointer. */ |
2186 | ||
2187 | argtypes = (struct field *) | |
2188 | TYPE_ALLOC (type, (argcount + 1) * sizeof (struct field)); | |
c906108c | 2189 | p = argtypetext; |
4a1970e4 DJ |
2190 | |
2191 | /* Add THIS pointer for non-static methods. */ | |
2192 | f = TYPE_FN_FIELDLIST1 (type, method_id); | |
2193 | if (TYPE_FN_FIELD_STATIC_P (f, signature_id)) | |
2194 | argcount = 0; | |
2195 | else | |
2196 | { | |
ad2f7632 | 2197 | argtypes[0].type = lookup_pointer_type (type); |
4a1970e4 DJ |
2198 | argcount = 1; |
2199 | } | |
c906108c | 2200 | |
0963b4bd | 2201 | if (*p != ')') /* () means no args, skip while. */ |
c906108c SS |
2202 | { |
2203 | depth = 0; | |
2204 | while (*p) | |
2205 | { | |
2206 | if (depth <= 0 && (*p == ',' || *p == ')')) | |
2207 | { | |
ad2f7632 DJ |
2208 | /* Avoid parsing of ellipsis, they will be handled below. |
2209 | Also avoid ``void'' as above. */ | |
2210 | if (strncmp (argtypetext, "...", p - argtypetext) != 0 | |
2211 | && strncmp (argtypetext, "void", p - argtypetext) != 0) | |
c906108c | 2212 | { |
ad2f7632 | 2213 | argtypes[argcount].type = |
48319d1f | 2214 | safe_parse_type (gdbarch, argtypetext, p - argtypetext); |
c906108c SS |
2215 | argcount += 1; |
2216 | } | |
2217 | argtypetext = p + 1; | |
2218 | } | |
2219 | ||
070ad9f0 | 2220 | if (*p == '(' || *p == '<') |
c906108c SS |
2221 | { |
2222 | depth += 1; | |
2223 | } | |
070ad9f0 | 2224 | else if (*p == ')' || *p == '>') |
c906108c SS |
2225 | { |
2226 | depth -= 1; | |
2227 | } | |
2228 | ||
2229 | p += 1; | |
2230 | } | |
2231 | } | |
2232 | ||
c906108c SS |
2233 | TYPE_FN_FIELD_PHYSNAME (f, signature_id) = mangled_name; |
2234 | ||
2235 | /* Now update the old "stub" type into a real type. */ | |
2236 | mtype = TYPE_FN_FIELD_TYPE (f, signature_id); | |
2237 | TYPE_DOMAIN_TYPE (mtype) = type; | |
ad2f7632 DJ |
2238 | TYPE_FIELDS (mtype) = argtypes; |
2239 | TYPE_NFIELDS (mtype) = argcount; | |
876cecd0 | 2240 | TYPE_STUB (mtype) = 0; |
c906108c | 2241 | TYPE_FN_FIELD_STUB (f, signature_id) = 0; |
ad2f7632 | 2242 | if (p[-2] == '.') |
876cecd0 | 2243 | TYPE_VARARGS (mtype) = 1; |
ad2f7632 DJ |
2244 | |
2245 | xfree (demangled_name); | |
c906108c SS |
2246 | } |
2247 | ||
7ba81444 MS |
2248 | /* This is the external interface to check_stub_method, above. This |
2249 | function unstubs all of the signatures for TYPE's METHOD_ID method | |
2250 | name. After calling this function TYPE_FN_FIELD_STUB will be | |
2251 | cleared for each signature and TYPE_FN_FIELDLIST_NAME will be | |
2252 | correct. | |
de17c821 DJ |
2253 | |
2254 | This function unfortunately can not die until stabs do. */ | |
2255 | ||
2256 | void | |
2257 | check_stub_method_group (struct type *type, int method_id) | |
2258 | { | |
2259 | int len = TYPE_FN_FIELDLIST_LENGTH (type, method_id); | |
2260 | struct fn_field *f = TYPE_FN_FIELDLIST1 (type, method_id); | |
f710f4fc | 2261 | int j, found_stub = 0; |
de17c821 DJ |
2262 | |
2263 | for (j = 0; j < len; j++) | |
2264 | if (TYPE_FN_FIELD_STUB (f, j)) | |
2265 | { | |
2266 | found_stub = 1; | |
2267 | check_stub_method (type, method_id, j); | |
2268 | } | |
2269 | ||
7ba81444 MS |
2270 | /* GNU v3 methods with incorrect names were corrected when we read |
2271 | in type information, because it was cheaper to do it then. The | |
2272 | only GNU v2 methods with incorrect method names are operators and | |
2273 | destructors; destructors were also corrected when we read in type | |
2274 | information. | |
de17c821 DJ |
2275 | |
2276 | Therefore the only thing we need to handle here are v2 operator | |
2277 | names. */ | |
2278 | if (found_stub && strncmp (TYPE_FN_FIELD_PHYSNAME (f, 0), "_Z", 2) != 0) | |
2279 | { | |
2280 | int ret; | |
2281 | char dem_opname[256]; | |
2282 | ||
7ba81444 MS |
2283 | ret = cplus_demangle_opname (TYPE_FN_FIELDLIST_NAME (type, |
2284 | method_id), | |
de17c821 DJ |
2285 | dem_opname, DMGL_ANSI); |
2286 | if (!ret) | |
7ba81444 MS |
2287 | ret = cplus_demangle_opname (TYPE_FN_FIELDLIST_NAME (type, |
2288 | method_id), | |
de17c821 DJ |
2289 | dem_opname, 0); |
2290 | if (ret) | |
2291 | TYPE_FN_FIELDLIST_NAME (type, method_id) = xstrdup (dem_opname); | |
2292 | } | |
2293 | } | |
2294 | ||
9655fd1a JK |
2295 | /* Ensure it is in .rodata (if available) by workarounding GCC PR 44690. */ |
2296 | const struct cplus_struct_type cplus_struct_default = { }; | |
c906108c SS |
2297 | |
2298 | void | |
fba45db2 | 2299 | allocate_cplus_struct_type (struct type *type) |
c906108c | 2300 | { |
b4ba55a1 JB |
2301 | if (HAVE_CPLUS_STRUCT (type)) |
2302 | /* Structure was already allocated. Nothing more to do. */ | |
2303 | return; | |
2304 | ||
2305 | TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_CPLUS_STUFF; | |
2306 | TYPE_RAW_CPLUS_SPECIFIC (type) = (struct cplus_struct_type *) | |
2307 | TYPE_ALLOC (type, sizeof (struct cplus_struct_type)); | |
2308 | *(TYPE_RAW_CPLUS_SPECIFIC (type)) = cplus_struct_default; | |
c906108c SS |
2309 | } |
2310 | ||
b4ba55a1 JB |
2311 | const struct gnat_aux_type gnat_aux_default = |
2312 | { NULL }; | |
2313 | ||
2314 | /* Set the TYPE's type-specific kind to TYPE_SPECIFIC_GNAT_STUFF, | |
2315 | and allocate the associated gnat-specific data. The gnat-specific | |
2316 | data is also initialized to gnat_aux_default. */ | |
5212577a | 2317 | |
b4ba55a1 JB |
2318 | void |
2319 | allocate_gnat_aux_type (struct type *type) | |
2320 | { | |
2321 | TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_GNAT_STUFF; | |
2322 | TYPE_GNAT_SPECIFIC (type) = (struct gnat_aux_type *) | |
2323 | TYPE_ALLOC (type, sizeof (struct gnat_aux_type)); | |
2324 | *(TYPE_GNAT_SPECIFIC (type)) = gnat_aux_default; | |
2325 | } | |
2326 | ||
c906108c SS |
2327 | /* Helper function to initialize the standard scalar types. |
2328 | ||
86f62fd7 TT |
2329 | If NAME is non-NULL, then it is used to initialize the type name. |
2330 | Note that NAME is not copied; it is required to have a lifetime at | |
2331 | least as long as OBJFILE. */ | |
c906108c SS |
2332 | |
2333 | struct type * | |
7ba81444 | 2334 | init_type (enum type_code code, int length, int flags, |
748e18ae | 2335 | const char *name, struct objfile *objfile) |
c906108c | 2336 | { |
52f0bd74 | 2337 | struct type *type; |
c906108c SS |
2338 | |
2339 | type = alloc_type (objfile); | |
2340 | TYPE_CODE (type) = code; | |
2341 | TYPE_LENGTH (type) = length; | |
876cecd0 TT |
2342 | |
2343 | gdb_assert (!(flags & (TYPE_FLAG_MIN - 1))); | |
2344 | if (flags & TYPE_FLAG_UNSIGNED) | |
2345 | TYPE_UNSIGNED (type) = 1; | |
2346 | if (flags & TYPE_FLAG_NOSIGN) | |
2347 | TYPE_NOSIGN (type) = 1; | |
2348 | if (flags & TYPE_FLAG_STUB) | |
2349 | TYPE_STUB (type) = 1; | |
2350 | if (flags & TYPE_FLAG_TARGET_STUB) | |
2351 | TYPE_TARGET_STUB (type) = 1; | |
2352 | if (flags & TYPE_FLAG_STATIC) | |
2353 | TYPE_STATIC (type) = 1; | |
2354 | if (flags & TYPE_FLAG_PROTOTYPED) | |
2355 | TYPE_PROTOTYPED (type) = 1; | |
2356 | if (flags & TYPE_FLAG_INCOMPLETE) | |
2357 | TYPE_INCOMPLETE (type) = 1; | |
2358 | if (flags & TYPE_FLAG_VARARGS) | |
2359 | TYPE_VARARGS (type) = 1; | |
2360 | if (flags & TYPE_FLAG_VECTOR) | |
2361 | TYPE_VECTOR (type) = 1; | |
2362 | if (flags & TYPE_FLAG_STUB_SUPPORTED) | |
2363 | TYPE_STUB_SUPPORTED (type) = 1; | |
876cecd0 TT |
2364 | if (flags & TYPE_FLAG_FIXED_INSTANCE) |
2365 | TYPE_FIXED_INSTANCE (type) = 1; | |
0875794a JK |
2366 | if (flags & TYPE_FLAG_GNU_IFUNC) |
2367 | TYPE_GNU_IFUNC (type) = 1; | |
876cecd0 | 2368 | |
86f62fd7 | 2369 | TYPE_NAME (type) = name; |
c906108c SS |
2370 | |
2371 | /* C++ fancies. */ | |
2372 | ||
973ccf8b | 2373 | if (name && strcmp (name, "char") == 0) |
876cecd0 | 2374 | TYPE_NOSIGN (type) = 1; |
973ccf8b | 2375 | |
b4ba55a1 | 2376 | switch (code) |
c906108c | 2377 | { |
b4ba55a1 JB |
2378 | case TYPE_CODE_STRUCT: |
2379 | case TYPE_CODE_UNION: | |
2380 | case TYPE_CODE_NAMESPACE: | |
2381 | INIT_CPLUS_SPECIFIC (type); | |
2382 | break; | |
2383 | case TYPE_CODE_FLT: | |
2384 | TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_FLOATFORMAT; | |
2385 | break; | |
2386 | case TYPE_CODE_FUNC: | |
b6cdc2c1 | 2387 | INIT_FUNC_SPECIFIC (type); |
b4ba55a1 | 2388 | break; |
c906108c | 2389 | } |
c16abbde | 2390 | return type; |
c906108c | 2391 | } |
5212577a DE |
2392 | \f |
2393 | /* Queries on types. */ | |
c906108c | 2394 | |
c906108c | 2395 | int |
fba45db2 | 2396 | can_dereference (struct type *t) |
c906108c | 2397 | { |
7ba81444 MS |
2398 | /* FIXME: Should we return true for references as well as |
2399 | pointers? */ | |
c906108c SS |
2400 | CHECK_TYPEDEF (t); |
2401 | return | |
2402 | (t != NULL | |
2403 | && TYPE_CODE (t) == TYPE_CODE_PTR | |
2404 | && TYPE_CODE (TYPE_TARGET_TYPE (t)) != TYPE_CODE_VOID); | |
2405 | } | |
2406 | ||
adf40b2e | 2407 | int |
fba45db2 | 2408 | is_integral_type (struct type *t) |
adf40b2e JM |
2409 | { |
2410 | CHECK_TYPEDEF (t); | |
2411 | return | |
2412 | ((t != NULL) | |
d4f3574e SS |
2413 | && ((TYPE_CODE (t) == TYPE_CODE_INT) |
2414 | || (TYPE_CODE (t) == TYPE_CODE_ENUM) | |
4f2aea11 | 2415 | || (TYPE_CODE (t) == TYPE_CODE_FLAGS) |
d4f3574e SS |
2416 | || (TYPE_CODE (t) == TYPE_CODE_CHAR) |
2417 | || (TYPE_CODE (t) == TYPE_CODE_RANGE) | |
2418 | || (TYPE_CODE (t) == TYPE_CODE_BOOL))); | |
adf40b2e JM |
2419 | } |
2420 | ||
e09342b5 TJB |
2421 | /* Return true if TYPE is scalar. */ |
2422 | ||
2423 | static int | |
2424 | is_scalar_type (struct type *type) | |
2425 | { | |
2426 | CHECK_TYPEDEF (type); | |
2427 | ||
2428 | switch (TYPE_CODE (type)) | |
2429 | { | |
2430 | case TYPE_CODE_ARRAY: | |
2431 | case TYPE_CODE_STRUCT: | |
2432 | case TYPE_CODE_UNION: | |
2433 | case TYPE_CODE_SET: | |
2434 | case TYPE_CODE_STRING: | |
e09342b5 TJB |
2435 | return 0; |
2436 | default: | |
2437 | return 1; | |
2438 | } | |
2439 | } | |
2440 | ||
2441 | /* Return true if T is scalar, or a composite type which in practice has | |
90e4670f TJB |
2442 | the memory layout of a scalar type. E.g., an array or struct with only |
2443 | one scalar element inside it, or a union with only scalar elements. */ | |
e09342b5 TJB |
2444 | |
2445 | int | |
2446 | is_scalar_type_recursive (struct type *t) | |
2447 | { | |
2448 | CHECK_TYPEDEF (t); | |
2449 | ||
2450 | if (is_scalar_type (t)) | |
2451 | return 1; | |
2452 | /* Are we dealing with an array or string of known dimensions? */ | |
2453 | else if ((TYPE_CODE (t) == TYPE_CODE_ARRAY | |
2454 | || TYPE_CODE (t) == TYPE_CODE_STRING) && TYPE_NFIELDS (t) == 1 | |
2455 | && TYPE_CODE (TYPE_INDEX_TYPE (t)) == TYPE_CODE_RANGE) | |
2456 | { | |
2457 | LONGEST low_bound, high_bound; | |
2458 | struct type *elt_type = check_typedef (TYPE_TARGET_TYPE (t)); | |
2459 | ||
2460 | get_discrete_bounds (TYPE_INDEX_TYPE (t), &low_bound, &high_bound); | |
2461 | ||
2462 | return high_bound == low_bound && is_scalar_type_recursive (elt_type); | |
2463 | } | |
2464 | /* Are we dealing with a struct with one element? */ | |
2465 | else if (TYPE_CODE (t) == TYPE_CODE_STRUCT && TYPE_NFIELDS (t) == 1) | |
2466 | return is_scalar_type_recursive (TYPE_FIELD_TYPE (t, 0)); | |
2467 | else if (TYPE_CODE (t) == TYPE_CODE_UNION) | |
2468 | { | |
2469 | int i, n = TYPE_NFIELDS (t); | |
2470 | ||
2471 | /* If all elements of the union are scalar, then the union is scalar. */ | |
2472 | for (i = 0; i < n; i++) | |
2473 | if (!is_scalar_type_recursive (TYPE_FIELD_TYPE (t, i))) | |
2474 | return 0; | |
2475 | ||
2476 | return 1; | |
2477 | } | |
2478 | ||
2479 | return 0; | |
2480 | } | |
2481 | ||
4e8f195d TT |
2482 | /* A helper function which returns true if types A and B represent the |
2483 | "same" class type. This is true if the types have the same main | |
2484 | type, or the same name. */ | |
2485 | ||
2486 | int | |
2487 | class_types_same_p (const struct type *a, const struct type *b) | |
2488 | { | |
2489 | return (TYPE_MAIN_TYPE (a) == TYPE_MAIN_TYPE (b) | |
2490 | || (TYPE_NAME (a) && TYPE_NAME (b) | |
2491 | && !strcmp (TYPE_NAME (a), TYPE_NAME (b)))); | |
2492 | } | |
2493 | ||
a9d5ef47 SW |
2494 | /* If BASE is an ancestor of DCLASS return the distance between them. |
2495 | otherwise return -1; | |
2496 | eg: | |
2497 | ||
2498 | class A {}; | |
2499 | class B: public A {}; | |
2500 | class C: public B {}; | |
2501 | class D: C {}; | |
2502 | ||
2503 | distance_to_ancestor (A, A, 0) = 0 | |
2504 | distance_to_ancestor (A, B, 0) = 1 | |
2505 | distance_to_ancestor (A, C, 0) = 2 | |
2506 | distance_to_ancestor (A, D, 0) = 3 | |
2507 | ||
2508 | If PUBLIC is 1 then only public ancestors are considered, | |
2509 | and the function returns the distance only if BASE is a public ancestor | |
2510 | of DCLASS. | |
2511 | Eg: | |
2512 | ||
0963b4bd | 2513 | distance_to_ancestor (A, D, 1) = -1. */ |
c906108c | 2514 | |
0526b37a | 2515 | static int |
a9d5ef47 | 2516 | distance_to_ancestor (struct type *base, struct type *dclass, int public) |
c906108c SS |
2517 | { |
2518 | int i; | |
a9d5ef47 | 2519 | int d; |
c5aa993b | 2520 | |
c906108c SS |
2521 | CHECK_TYPEDEF (base); |
2522 | CHECK_TYPEDEF (dclass); | |
2523 | ||
4e8f195d | 2524 | if (class_types_same_p (base, dclass)) |
a9d5ef47 | 2525 | return 0; |
c906108c SS |
2526 | |
2527 | for (i = 0; i < TYPE_N_BASECLASSES (dclass); i++) | |
4e8f195d | 2528 | { |
0526b37a SW |
2529 | if (public && ! BASETYPE_VIA_PUBLIC (dclass, i)) |
2530 | continue; | |
2531 | ||
a9d5ef47 SW |
2532 | d = distance_to_ancestor (base, TYPE_BASECLASS (dclass, i), public); |
2533 | if (d >= 0) | |
2534 | return 1 + d; | |
4e8f195d | 2535 | } |
c906108c | 2536 | |
a9d5ef47 | 2537 | return -1; |
c906108c | 2538 | } |
4e8f195d | 2539 | |
0526b37a SW |
2540 | /* Check whether BASE is an ancestor or base class or DCLASS |
2541 | Return 1 if so, and 0 if not. | |
2542 | Note: If BASE and DCLASS are of the same type, this function | |
2543 | will return 1. So for some class A, is_ancestor (A, A) will | |
2544 | return 1. */ | |
2545 | ||
2546 | int | |
2547 | is_ancestor (struct type *base, struct type *dclass) | |
2548 | { | |
a9d5ef47 | 2549 | return distance_to_ancestor (base, dclass, 0) >= 0; |
0526b37a SW |
2550 | } |
2551 | ||
4e8f195d TT |
2552 | /* Like is_ancestor, but only returns true when BASE is a public |
2553 | ancestor of DCLASS. */ | |
2554 | ||
2555 | int | |
2556 | is_public_ancestor (struct type *base, struct type *dclass) | |
2557 | { | |
a9d5ef47 | 2558 | return distance_to_ancestor (base, dclass, 1) >= 0; |
4e8f195d TT |
2559 | } |
2560 | ||
2561 | /* A helper function for is_unique_ancestor. */ | |
2562 | ||
2563 | static int | |
2564 | is_unique_ancestor_worker (struct type *base, struct type *dclass, | |
2565 | int *offset, | |
8af8e3bc PA |
2566 | const gdb_byte *valaddr, int embedded_offset, |
2567 | CORE_ADDR address, struct value *val) | |
4e8f195d TT |
2568 | { |
2569 | int i, count = 0; | |
2570 | ||
2571 | CHECK_TYPEDEF (base); | |
2572 | CHECK_TYPEDEF (dclass); | |
2573 | ||
2574 | for (i = 0; i < TYPE_N_BASECLASSES (dclass) && count < 2; ++i) | |
2575 | { | |
8af8e3bc PA |
2576 | struct type *iter; |
2577 | int this_offset; | |
4e8f195d | 2578 | |
8af8e3bc PA |
2579 | iter = check_typedef (TYPE_BASECLASS (dclass, i)); |
2580 | ||
2581 | this_offset = baseclass_offset (dclass, i, valaddr, embedded_offset, | |
2582 | address, val); | |
4e8f195d TT |
2583 | |
2584 | if (class_types_same_p (base, iter)) | |
2585 | { | |
2586 | /* If this is the first subclass, set *OFFSET and set count | |
2587 | to 1. Otherwise, if this is at the same offset as | |
2588 | previous instances, do nothing. Otherwise, increment | |
2589 | count. */ | |
2590 | if (*offset == -1) | |
2591 | { | |
2592 | *offset = this_offset; | |
2593 | count = 1; | |
2594 | } | |
2595 | else if (this_offset == *offset) | |
2596 | { | |
2597 | /* Nothing. */ | |
2598 | } | |
2599 | else | |
2600 | ++count; | |
2601 | } | |
2602 | else | |
2603 | count += is_unique_ancestor_worker (base, iter, offset, | |
8af8e3bc PA |
2604 | valaddr, |
2605 | embedded_offset + this_offset, | |
2606 | address, val); | |
4e8f195d TT |
2607 | } |
2608 | ||
2609 | return count; | |
2610 | } | |
2611 | ||
2612 | /* Like is_ancestor, but only returns true if BASE is a unique base | |
2613 | class of the type of VAL. */ | |
2614 | ||
2615 | int | |
2616 | is_unique_ancestor (struct type *base, struct value *val) | |
2617 | { | |
2618 | int offset = -1; | |
2619 | ||
2620 | return is_unique_ancestor_worker (base, value_type (val), &offset, | |
8af8e3bc PA |
2621 | value_contents_for_printing (val), |
2622 | value_embedded_offset (val), | |
2623 | value_address (val), val) == 1; | |
4e8f195d TT |
2624 | } |
2625 | ||
c906108c | 2626 | \f |
5212577a | 2627 | /* Overload resolution. */ |
c906108c | 2628 | |
6403aeea SW |
2629 | /* Return the sum of the rank of A with the rank of B. */ |
2630 | ||
2631 | struct rank | |
2632 | sum_ranks (struct rank a, struct rank b) | |
2633 | { | |
2634 | struct rank c; | |
2635 | c.rank = a.rank + b.rank; | |
a9d5ef47 | 2636 | c.subrank = a.subrank + b.subrank; |
6403aeea SW |
2637 | return c; |
2638 | } | |
2639 | ||
2640 | /* Compare rank A and B and return: | |
2641 | 0 if a = b | |
2642 | 1 if a is better than b | |
2643 | -1 if b is better than a. */ | |
2644 | ||
2645 | int | |
2646 | compare_ranks (struct rank a, struct rank b) | |
2647 | { | |
2648 | if (a.rank == b.rank) | |
a9d5ef47 SW |
2649 | { |
2650 | if (a.subrank == b.subrank) | |
2651 | return 0; | |
2652 | if (a.subrank < b.subrank) | |
2653 | return 1; | |
2654 | if (a.subrank > b.subrank) | |
2655 | return -1; | |
2656 | } | |
6403aeea SW |
2657 | |
2658 | if (a.rank < b.rank) | |
2659 | return 1; | |
2660 | ||
0963b4bd | 2661 | /* a.rank > b.rank */ |
6403aeea SW |
2662 | return -1; |
2663 | } | |
c5aa993b | 2664 | |
0963b4bd | 2665 | /* Functions for overload resolution begin here. */ |
c906108c SS |
2666 | |
2667 | /* Compare two badness vectors A and B and return the result. | |
7ba81444 MS |
2668 | 0 => A and B are identical |
2669 | 1 => A and B are incomparable | |
2670 | 2 => A is better than B | |
2671 | 3 => A is worse than B */ | |
c906108c SS |
2672 | |
2673 | int | |
fba45db2 | 2674 | compare_badness (struct badness_vector *a, struct badness_vector *b) |
c906108c SS |
2675 | { |
2676 | int i; | |
2677 | int tmp; | |
c5aa993b JM |
2678 | short found_pos = 0; /* any positives in c? */ |
2679 | short found_neg = 0; /* any negatives in c? */ | |
2680 | ||
2681 | /* differing lengths => incomparable */ | |
c906108c SS |
2682 | if (a->length != b->length) |
2683 | return 1; | |
2684 | ||
c5aa993b JM |
2685 | /* Subtract b from a */ |
2686 | for (i = 0; i < a->length; i++) | |
c906108c | 2687 | { |
6403aeea | 2688 | tmp = compare_ranks (b->rank[i], a->rank[i]); |
c906108c | 2689 | if (tmp > 0) |
c5aa993b | 2690 | found_pos = 1; |
c906108c | 2691 | else if (tmp < 0) |
c5aa993b | 2692 | found_neg = 1; |
c906108c SS |
2693 | } |
2694 | ||
2695 | if (found_pos) | |
2696 | { | |
2697 | if (found_neg) | |
c5aa993b | 2698 | return 1; /* incomparable */ |
c906108c | 2699 | else |
c5aa993b | 2700 | return 3; /* A > B */ |
c906108c | 2701 | } |
c5aa993b JM |
2702 | else |
2703 | /* no positives */ | |
c906108c SS |
2704 | { |
2705 | if (found_neg) | |
c5aa993b | 2706 | return 2; /* A < B */ |
c906108c | 2707 | else |
c5aa993b | 2708 | return 0; /* A == B */ |
c906108c SS |
2709 | } |
2710 | } | |
2711 | ||
7ba81444 MS |
2712 | /* Rank a function by comparing its parameter types (PARMS, length |
2713 | NPARMS), to the types of an argument list (ARGS, length NARGS). | |
2714 | Return a pointer to a badness vector. This has NARGS + 1 | |
2715 | entries. */ | |
c906108c SS |
2716 | |
2717 | struct badness_vector * | |
7ba81444 | 2718 | rank_function (struct type **parms, int nparms, |
da096638 | 2719 | struct value **args, int nargs) |
c906108c SS |
2720 | { |
2721 | int i; | |
c5aa993b | 2722 | struct badness_vector *bv; |
c906108c SS |
2723 | int min_len = nparms < nargs ? nparms : nargs; |
2724 | ||
2725 | bv = xmalloc (sizeof (struct badness_vector)); | |
0963b4bd | 2726 | bv->length = nargs + 1; /* add 1 for the length-match rank. */ |
c4e54771 | 2727 | bv->rank = XNEWVEC (struct rank, nargs + 1); |
c906108c SS |
2728 | |
2729 | /* First compare the lengths of the supplied lists. | |
7ba81444 | 2730 | If there is a mismatch, set it to a high value. */ |
c5aa993b | 2731 | |
c906108c | 2732 | /* pai/1997-06-03 FIXME: when we have debug info about default |
7ba81444 MS |
2733 | arguments and ellipsis parameter lists, we should consider those |
2734 | and rank the length-match more finely. */ | |
c906108c | 2735 | |
6403aeea SW |
2736 | LENGTH_MATCH (bv) = (nargs != nparms) |
2737 | ? LENGTH_MISMATCH_BADNESS | |
2738 | : EXACT_MATCH_BADNESS; | |
c906108c | 2739 | |
0963b4bd | 2740 | /* Now rank all the parameters of the candidate function. */ |
74cc24b0 | 2741 | for (i = 1; i <= min_len; i++) |
da096638 KS |
2742 | bv->rank[i] = rank_one_type (parms[i - 1], value_type (args[i - 1]), |
2743 | args[i - 1]); | |
c906108c | 2744 | |
0963b4bd | 2745 | /* If more arguments than parameters, add dummy entries. */ |
c5aa993b | 2746 | for (i = min_len + 1; i <= nargs; i++) |
c906108c SS |
2747 | bv->rank[i] = TOO_FEW_PARAMS_BADNESS; |
2748 | ||
2749 | return bv; | |
2750 | } | |
2751 | ||
973ccf8b DJ |
2752 | /* Compare the names of two integer types, assuming that any sign |
2753 | qualifiers have been checked already. We do it this way because | |
2754 | there may be an "int" in the name of one of the types. */ | |
2755 | ||
2756 | static int | |
2757 | integer_types_same_name_p (const char *first, const char *second) | |
2758 | { | |
2759 | int first_p, second_p; | |
2760 | ||
7ba81444 MS |
2761 | /* If both are shorts, return 1; if neither is a short, keep |
2762 | checking. */ | |
973ccf8b DJ |
2763 | first_p = (strstr (first, "short") != NULL); |
2764 | second_p = (strstr (second, "short") != NULL); | |
2765 | if (first_p && second_p) | |
2766 | return 1; | |
2767 | if (first_p || second_p) | |
2768 | return 0; | |
2769 | ||
2770 | /* Likewise for long. */ | |
2771 | first_p = (strstr (first, "long") != NULL); | |
2772 | second_p = (strstr (second, "long") != NULL); | |
2773 | if (first_p && second_p) | |
2774 | return 1; | |
2775 | if (first_p || second_p) | |
2776 | return 0; | |
2777 | ||
2778 | /* Likewise for char. */ | |
2779 | first_p = (strstr (first, "char") != NULL); | |
2780 | second_p = (strstr (second, "char") != NULL); | |
2781 | if (first_p && second_p) | |
2782 | return 1; | |
2783 | if (first_p || second_p) | |
2784 | return 0; | |
2785 | ||
2786 | /* They must both be ints. */ | |
2787 | return 1; | |
2788 | } | |
2789 | ||
7062b0a0 SW |
2790 | /* Compares type A to type B returns 1 if the represent the same type |
2791 | 0 otherwise. */ | |
2792 | ||
bd69fc68 | 2793 | int |
7062b0a0 SW |
2794 | types_equal (struct type *a, struct type *b) |
2795 | { | |
2796 | /* Identical type pointers. */ | |
2797 | /* However, this still doesn't catch all cases of same type for b | |
2798 | and a. The reason is that builtin types are different from | |
2799 | the same ones constructed from the object. */ | |
2800 | if (a == b) | |
2801 | return 1; | |
2802 | ||
2803 | /* Resolve typedefs */ | |
2804 | if (TYPE_CODE (a) == TYPE_CODE_TYPEDEF) | |
2805 | a = check_typedef (a); | |
2806 | if (TYPE_CODE (b) == TYPE_CODE_TYPEDEF) | |
2807 | b = check_typedef (b); | |
2808 | ||
2809 | /* If after resolving typedefs a and b are not of the same type | |
2810 | code then they are not equal. */ | |
2811 | if (TYPE_CODE (a) != TYPE_CODE (b)) | |
2812 | return 0; | |
2813 | ||
2814 | /* If a and b are both pointers types or both reference types then | |
2815 | they are equal of the same type iff the objects they refer to are | |
2816 | of the same type. */ | |
2817 | if (TYPE_CODE (a) == TYPE_CODE_PTR | |
2818 | || TYPE_CODE (a) == TYPE_CODE_REF) | |
2819 | return types_equal (TYPE_TARGET_TYPE (a), | |
2820 | TYPE_TARGET_TYPE (b)); | |
2821 | ||
0963b4bd | 2822 | /* Well, damnit, if the names are exactly the same, I'll say they |
7062b0a0 SW |
2823 | are exactly the same. This happens when we generate method |
2824 | stubs. The types won't point to the same address, but they | |
0963b4bd | 2825 | really are the same. */ |
7062b0a0 SW |
2826 | |
2827 | if (TYPE_NAME (a) && TYPE_NAME (b) | |
2828 | && strcmp (TYPE_NAME (a), TYPE_NAME (b)) == 0) | |
2829 | return 1; | |
2830 | ||
2831 | /* Check if identical after resolving typedefs. */ | |
2832 | if (a == b) | |
2833 | return 1; | |
2834 | ||
9ce98649 TT |
2835 | /* Two function types are equal if their argument and return types |
2836 | are equal. */ | |
2837 | if (TYPE_CODE (a) == TYPE_CODE_FUNC) | |
2838 | { | |
2839 | int i; | |
2840 | ||
2841 | if (TYPE_NFIELDS (a) != TYPE_NFIELDS (b)) | |
2842 | return 0; | |
2843 | ||
2844 | if (!types_equal (TYPE_TARGET_TYPE (a), TYPE_TARGET_TYPE (b))) | |
2845 | return 0; | |
2846 | ||
2847 | for (i = 0; i < TYPE_NFIELDS (a); ++i) | |
2848 | if (!types_equal (TYPE_FIELD_TYPE (a, i), TYPE_FIELD_TYPE (b, i))) | |
2849 | return 0; | |
2850 | ||
2851 | return 1; | |
2852 | } | |
2853 | ||
7062b0a0 SW |
2854 | return 0; |
2855 | } | |
ca092b61 DE |
2856 | \f |
2857 | /* Deep comparison of types. */ | |
2858 | ||
2859 | /* An entry in the type-equality bcache. */ | |
2860 | ||
2861 | typedef struct type_equality_entry | |
2862 | { | |
2863 | struct type *type1, *type2; | |
2864 | } type_equality_entry_d; | |
2865 | ||
2866 | DEF_VEC_O (type_equality_entry_d); | |
2867 | ||
2868 | /* A helper function to compare two strings. Returns 1 if they are | |
2869 | the same, 0 otherwise. Handles NULLs properly. */ | |
2870 | ||
2871 | static int | |
2872 | compare_maybe_null_strings (const char *s, const char *t) | |
2873 | { | |
2874 | if (s == NULL && t != NULL) | |
2875 | return 0; | |
2876 | else if (s != NULL && t == NULL) | |
2877 | return 0; | |
2878 | else if (s == NULL && t== NULL) | |
2879 | return 1; | |
2880 | return strcmp (s, t) == 0; | |
2881 | } | |
2882 | ||
2883 | /* A helper function for check_types_worklist that checks two types for | |
2884 | "deep" equality. Returns non-zero if the types are considered the | |
2885 | same, zero otherwise. */ | |
2886 | ||
2887 | static int | |
2888 | check_types_equal (struct type *type1, struct type *type2, | |
2889 | VEC (type_equality_entry_d) **worklist) | |
2890 | { | |
2891 | CHECK_TYPEDEF (type1); | |
2892 | CHECK_TYPEDEF (type2); | |
2893 | ||
2894 | if (type1 == type2) | |
2895 | return 1; | |
2896 | ||
2897 | if (TYPE_CODE (type1) != TYPE_CODE (type2) | |
2898 | || TYPE_LENGTH (type1) != TYPE_LENGTH (type2) | |
2899 | || TYPE_UNSIGNED (type1) != TYPE_UNSIGNED (type2) | |
2900 | || TYPE_NOSIGN (type1) != TYPE_NOSIGN (type2) | |
2901 | || TYPE_VARARGS (type1) != TYPE_VARARGS (type2) | |
2902 | || TYPE_VECTOR (type1) != TYPE_VECTOR (type2) | |
2903 | || TYPE_NOTTEXT (type1) != TYPE_NOTTEXT (type2) | |
2904 | || TYPE_INSTANCE_FLAGS (type1) != TYPE_INSTANCE_FLAGS (type2) | |
2905 | || TYPE_NFIELDS (type1) != TYPE_NFIELDS (type2)) | |
2906 | return 0; | |
2907 | ||
2908 | if (!compare_maybe_null_strings (TYPE_TAG_NAME (type1), | |
2909 | TYPE_TAG_NAME (type2))) | |
2910 | return 0; | |
2911 | if (!compare_maybe_null_strings (TYPE_NAME (type1), TYPE_NAME (type2))) | |
2912 | return 0; | |
2913 | ||
2914 | if (TYPE_CODE (type1) == TYPE_CODE_RANGE) | |
2915 | { | |
2916 | if (memcmp (TYPE_RANGE_DATA (type1), TYPE_RANGE_DATA (type2), | |
2917 | sizeof (*TYPE_RANGE_DATA (type1))) != 0) | |
2918 | return 0; | |
2919 | } | |
2920 | else | |
2921 | { | |
2922 | int i; | |
2923 | ||
2924 | for (i = 0; i < TYPE_NFIELDS (type1); ++i) | |
2925 | { | |
2926 | const struct field *field1 = &TYPE_FIELD (type1, i); | |
2927 | const struct field *field2 = &TYPE_FIELD (type2, i); | |
2928 | struct type_equality_entry entry; | |
2929 | ||
2930 | if (FIELD_ARTIFICIAL (*field1) != FIELD_ARTIFICIAL (*field2) | |
2931 | || FIELD_BITSIZE (*field1) != FIELD_BITSIZE (*field2) | |
2932 | || FIELD_LOC_KIND (*field1) != FIELD_LOC_KIND (*field2)) | |
2933 | return 0; | |
2934 | if (!compare_maybe_null_strings (FIELD_NAME (*field1), | |
2935 | FIELD_NAME (*field2))) | |
2936 | return 0; | |
2937 | switch (FIELD_LOC_KIND (*field1)) | |
2938 | { | |
2939 | case FIELD_LOC_KIND_BITPOS: | |
2940 | if (FIELD_BITPOS (*field1) != FIELD_BITPOS (*field2)) | |
2941 | return 0; | |
2942 | break; | |
2943 | case FIELD_LOC_KIND_ENUMVAL: | |
2944 | if (FIELD_ENUMVAL (*field1) != FIELD_ENUMVAL (*field2)) | |
2945 | return 0; | |
2946 | break; | |
2947 | case FIELD_LOC_KIND_PHYSADDR: | |
2948 | if (FIELD_STATIC_PHYSADDR (*field1) | |
2949 | != FIELD_STATIC_PHYSADDR (*field2)) | |
2950 | return 0; | |
2951 | break; | |
2952 | case FIELD_LOC_KIND_PHYSNAME: | |
2953 | if (!compare_maybe_null_strings (FIELD_STATIC_PHYSNAME (*field1), | |
2954 | FIELD_STATIC_PHYSNAME (*field2))) | |
2955 | return 0; | |
2956 | break; | |
2957 | case FIELD_LOC_KIND_DWARF_BLOCK: | |
2958 | { | |
2959 | struct dwarf2_locexpr_baton *block1, *block2; | |
2960 | ||
2961 | block1 = FIELD_DWARF_BLOCK (*field1); | |
2962 | block2 = FIELD_DWARF_BLOCK (*field2); | |
2963 | if (block1->per_cu != block2->per_cu | |
2964 | || block1->size != block2->size | |
2965 | || memcmp (block1->data, block2->data, block1->size) != 0) | |
2966 | return 0; | |
2967 | } | |
2968 | break; | |
2969 | default: | |
2970 | internal_error (__FILE__, __LINE__, _("Unsupported field kind " | |
2971 | "%d by check_types_equal"), | |
2972 | FIELD_LOC_KIND (*field1)); | |
2973 | } | |
2974 | ||
2975 | entry.type1 = FIELD_TYPE (*field1); | |
2976 | entry.type2 = FIELD_TYPE (*field2); | |
2977 | VEC_safe_push (type_equality_entry_d, *worklist, &entry); | |
2978 | } | |
2979 | } | |
2980 | ||
2981 | if (TYPE_TARGET_TYPE (type1) != NULL) | |
2982 | { | |
2983 | struct type_equality_entry entry; | |
2984 | ||
2985 | if (TYPE_TARGET_TYPE (type2) == NULL) | |
2986 | return 0; | |
2987 | ||
2988 | entry.type1 = TYPE_TARGET_TYPE (type1); | |
2989 | entry.type2 = TYPE_TARGET_TYPE (type2); | |
2990 | VEC_safe_push (type_equality_entry_d, *worklist, &entry); | |
2991 | } | |
2992 | else if (TYPE_TARGET_TYPE (type2) != NULL) | |
2993 | return 0; | |
2994 | ||
2995 | return 1; | |
2996 | } | |
2997 | ||
2998 | /* Check types on a worklist for equality. Returns zero if any pair | |
2999 | is not equal, non-zero if they are all considered equal. */ | |
3000 | ||
3001 | static int | |
3002 | check_types_worklist (VEC (type_equality_entry_d) **worklist, | |
3003 | struct bcache *cache) | |
3004 | { | |
3005 | while (!VEC_empty (type_equality_entry_d, *worklist)) | |
3006 | { | |
3007 | struct type_equality_entry entry; | |
3008 | int added; | |
3009 | ||
3010 | entry = *VEC_last (type_equality_entry_d, *worklist); | |
3011 | VEC_pop (type_equality_entry_d, *worklist); | |
3012 | ||
3013 | /* If the type pair has already been visited, we know it is | |
3014 | ok. */ | |
3015 | bcache_full (&entry, sizeof (entry), cache, &added); | |
3016 | if (!added) | |
3017 | continue; | |
3018 | ||
3019 | if (check_types_equal (entry.type1, entry.type2, worklist) == 0) | |
3020 | return 0; | |
3021 | } | |
7062b0a0 | 3022 | |
ca092b61 DE |
3023 | return 1; |
3024 | } | |
3025 | ||
3026 | /* Return non-zero if types TYPE1 and TYPE2 are equal, as determined by a | |
3027 | "deep comparison". Otherwise return zero. */ | |
3028 | ||
3029 | int | |
3030 | types_deeply_equal (struct type *type1, struct type *type2) | |
3031 | { | |
3032 | volatile struct gdb_exception except; | |
3033 | int result = 0; | |
3034 | struct bcache *cache; | |
3035 | VEC (type_equality_entry_d) *worklist = NULL; | |
3036 | struct type_equality_entry entry; | |
3037 | ||
3038 | gdb_assert (type1 != NULL && type2 != NULL); | |
3039 | ||
3040 | /* Early exit for the simple case. */ | |
3041 | if (type1 == type2) | |
3042 | return 1; | |
3043 | ||
3044 | cache = bcache_xmalloc (NULL, NULL); | |
3045 | ||
3046 | entry.type1 = type1; | |
3047 | entry.type2 = type2; | |
3048 | VEC_safe_push (type_equality_entry_d, worklist, &entry); | |
3049 | ||
3050 | TRY_CATCH (except, RETURN_MASK_ALL) | |
3051 | { | |
3052 | result = check_types_worklist (&worklist, cache); | |
3053 | } | |
3054 | /* check_types_worklist calls several nested helper functions, | |
3055 | some of which can raise a GDB Exception, so we just check | |
3056 | and rethrow here. If there is a GDB exception, a comparison | |
3057 | is not capable (or trusted), so exit. */ | |
3058 | bcache_xfree (cache); | |
3059 | VEC_free (type_equality_entry_d, worklist); | |
3060 | /* Rethrow if there was a problem. */ | |
3061 | if (except.reason < 0) | |
3062 | throw_exception (except); | |
3063 | ||
3064 | return result; | |
3065 | } | |
3066 | \f | |
c906108c SS |
3067 | /* Compare one type (PARM) for compatibility with another (ARG). |
3068 | * PARM is intended to be the parameter type of a function; and | |
3069 | * ARG is the supplied argument's type. This function tests if | |
3070 | * the latter can be converted to the former. | |
da096638 | 3071 | * VALUE is the argument's value or NULL if none (or called recursively) |
c906108c SS |
3072 | * |
3073 | * Return 0 if they are identical types; | |
3074 | * Otherwise, return an integer which corresponds to how compatible | |
7ba81444 MS |
3075 | * PARM is to ARG. The higher the return value, the worse the match. |
3076 | * Generally the "bad" conversions are all uniformly assigned a 100. */ | |
c906108c | 3077 | |
6403aeea | 3078 | struct rank |
da096638 | 3079 | rank_one_type (struct type *parm, struct type *arg, struct value *value) |
c906108c | 3080 | { |
a9d5ef47 | 3081 | struct rank rank = {0,0}; |
7062b0a0 SW |
3082 | |
3083 | if (types_equal (parm, arg)) | |
6403aeea | 3084 | return EXACT_MATCH_BADNESS; |
c906108c SS |
3085 | |
3086 | /* Resolve typedefs */ | |
3087 | if (TYPE_CODE (parm) == TYPE_CODE_TYPEDEF) | |
3088 | parm = check_typedef (parm); | |
3089 | if (TYPE_CODE (arg) == TYPE_CODE_TYPEDEF) | |
3090 | arg = check_typedef (arg); | |
3091 | ||
db577aea | 3092 | /* See through references, since we can almost make non-references |
7ba81444 | 3093 | references. */ |
db577aea | 3094 | if (TYPE_CODE (arg) == TYPE_CODE_REF) |
da096638 | 3095 | return (sum_ranks (rank_one_type (parm, TYPE_TARGET_TYPE (arg), NULL), |
6403aeea | 3096 | REFERENCE_CONVERSION_BADNESS)); |
db577aea | 3097 | if (TYPE_CODE (parm) == TYPE_CODE_REF) |
da096638 | 3098 | return (sum_ranks (rank_one_type (TYPE_TARGET_TYPE (parm), arg, NULL), |
6403aeea | 3099 | REFERENCE_CONVERSION_BADNESS)); |
5d161b24 | 3100 | if (overload_debug) |
7ba81444 MS |
3101 | /* Debugging only. */ |
3102 | fprintf_filtered (gdb_stderr, | |
3103 | "------ Arg is %s [%d], parm is %s [%d]\n", | |
3104 | TYPE_NAME (arg), TYPE_CODE (arg), | |
3105 | TYPE_NAME (parm), TYPE_CODE (parm)); | |
c906108c | 3106 | |
0963b4bd | 3107 | /* x -> y means arg of type x being supplied for parameter of type y. */ |
c906108c SS |
3108 | |
3109 | switch (TYPE_CODE (parm)) | |
3110 | { | |
c5aa993b JM |
3111 | case TYPE_CODE_PTR: |
3112 | switch (TYPE_CODE (arg)) | |
3113 | { | |
3114 | case TYPE_CODE_PTR: | |
7062b0a0 SW |
3115 | |
3116 | /* Allowed pointer conversions are: | |
3117 | (a) pointer to void-pointer conversion. */ | |
3118 | if (TYPE_CODE (TYPE_TARGET_TYPE (parm)) == TYPE_CODE_VOID) | |
c5aa993b | 3119 | return VOID_PTR_CONVERSION_BADNESS; |
7062b0a0 SW |
3120 | |
3121 | /* (b) pointer to ancestor-pointer conversion. */ | |
a9d5ef47 SW |
3122 | rank.subrank = distance_to_ancestor (TYPE_TARGET_TYPE (parm), |
3123 | TYPE_TARGET_TYPE (arg), | |
3124 | 0); | |
3125 | if (rank.subrank >= 0) | |
3126 | return sum_ranks (BASE_PTR_CONVERSION_BADNESS, rank); | |
7062b0a0 SW |
3127 | |
3128 | return INCOMPATIBLE_TYPE_BADNESS; | |
c5aa993b | 3129 | case TYPE_CODE_ARRAY: |
7062b0a0 SW |
3130 | if (types_equal (TYPE_TARGET_TYPE (parm), |
3131 | TYPE_TARGET_TYPE (arg))) | |
6403aeea | 3132 | return EXACT_MATCH_BADNESS; |
7062b0a0 | 3133 | return INCOMPATIBLE_TYPE_BADNESS; |
c5aa993b | 3134 | case TYPE_CODE_FUNC: |
da096638 | 3135 | return rank_one_type (TYPE_TARGET_TYPE (parm), arg, NULL); |
c5aa993b | 3136 | case TYPE_CODE_INT: |
a451cb65 | 3137 | if (value != NULL && TYPE_CODE (value_type (value)) == TYPE_CODE_INT) |
da096638 | 3138 | { |
a451cb65 KS |
3139 | if (value_as_long (value) == 0) |
3140 | { | |
3141 | /* Null pointer conversion: allow it to be cast to a pointer. | |
3142 | [4.10.1 of C++ standard draft n3290] */ | |
3143 | return NULL_POINTER_CONVERSION_BADNESS; | |
3144 | } | |
3145 | else | |
3146 | { | |
3147 | /* If type checking is disabled, allow the conversion. */ | |
3148 | if (!strict_type_checking) | |
3149 | return NS_INTEGER_POINTER_CONVERSION_BADNESS; | |
3150 | } | |
da096638 KS |
3151 | } |
3152 | /* fall through */ | |
c5aa993b | 3153 | case TYPE_CODE_ENUM: |
4f2aea11 | 3154 | case TYPE_CODE_FLAGS: |
c5aa993b JM |
3155 | case TYPE_CODE_CHAR: |
3156 | case TYPE_CODE_RANGE: | |
3157 | case TYPE_CODE_BOOL: | |
c5aa993b JM |
3158 | default: |
3159 | return INCOMPATIBLE_TYPE_BADNESS; | |
3160 | } | |
3161 | case TYPE_CODE_ARRAY: | |
3162 | switch (TYPE_CODE (arg)) | |
3163 | { | |
3164 | case TYPE_CODE_PTR: | |
3165 | case TYPE_CODE_ARRAY: | |
7ba81444 | 3166 | return rank_one_type (TYPE_TARGET_TYPE (parm), |
da096638 | 3167 | TYPE_TARGET_TYPE (arg), NULL); |
c5aa993b JM |
3168 | default: |
3169 | return INCOMPATIBLE_TYPE_BADNESS; | |
3170 | } | |
3171 | case TYPE_CODE_FUNC: | |
3172 | switch (TYPE_CODE (arg)) | |
3173 | { | |
3174 | case TYPE_CODE_PTR: /* funcptr -> func */ | |
da096638 | 3175 | return rank_one_type (parm, TYPE_TARGET_TYPE (arg), NULL); |
c5aa993b JM |
3176 | default: |
3177 | return INCOMPATIBLE_TYPE_BADNESS; | |
3178 | } | |
3179 | case TYPE_CODE_INT: | |
3180 | switch (TYPE_CODE (arg)) | |
3181 | { | |
3182 | case TYPE_CODE_INT: | |
3183 | if (TYPE_LENGTH (arg) == TYPE_LENGTH (parm)) | |
3184 | { | |
3185 | /* Deal with signed, unsigned, and plain chars and | |
7ba81444 | 3186 | signed and unsigned ints. */ |
c5aa993b JM |
3187 | if (TYPE_NOSIGN (parm)) |
3188 | { | |
0963b4bd | 3189 | /* This case only for character types. */ |
7ba81444 | 3190 | if (TYPE_NOSIGN (arg)) |
6403aeea | 3191 | return EXACT_MATCH_BADNESS; /* plain char -> plain char */ |
7ba81444 MS |
3192 | else /* signed/unsigned char -> plain char */ |
3193 | return INTEGER_CONVERSION_BADNESS; | |
c5aa993b JM |
3194 | } |
3195 | else if (TYPE_UNSIGNED (parm)) | |
3196 | { | |
3197 | if (TYPE_UNSIGNED (arg)) | |
3198 | { | |
7ba81444 MS |
3199 | /* unsigned int -> unsigned int, or |
3200 | unsigned long -> unsigned long */ | |
3201 | if (integer_types_same_name_p (TYPE_NAME (parm), | |
3202 | TYPE_NAME (arg))) | |
6403aeea | 3203 | return EXACT_MATCH_BADNESS; |
7ba81444 MS |
3204 | else if (integer_types_same_name_p (TYPE_NAME (arg), |
3205 | "int") | |
3206 | && integer_types_same_name_p (TYPE_NAME (parm), | |
3207 | "long")) | |
3e43a32a MS |
3208 | /* unsigned int -> unsigned long */ |
3209 | return INTEGER_PROMOTION_BADNESS; | |
c5aa993b | 3210 | else |
3e43a32a MS |
3211 | /* unsigned long -> unsigned int */ |
3212 | return INTEGER_CONVERSION_BADNESS; | |
c5aa993b JM |
3213 | } |
3214 | else | |
3215 | { | |
7ba81444 MS |
3216 | if (integer_types_same_name_p (TYPE_NAME (arg), |
3217 | "long") | |
3218 | && integer_types_same_name_p (TYPE_NAME (parm), | |
3219 | "int")) | |
3e43a32a MS |
3220 | /* signed long -> unsigned int */ |
3221 | return INTEGER_CONVERSION_BADNESS; | |
c5aa993b | 3222 | else |
3e43a32a MS |
3223 | /* signed int/long -> unsigned int/long */ |
3224 | return INTEGER_CONVERSION_BADNESS; | |
c5aa993b JM |
3225 | } |
3226 | } | |
3227 | else if (!TYPE_NOSIGN (arg) && !TYPE_UNSIGNED (arg)) | |
3228 | { | |
7ba81444 MS |
3229 | if (integer_types_same_name_p (TYPE_NAME (parm), |
3230 | TYPE_NAME (arg))) | |
6403aeea | 3231 | return EXACT_MATCH_BADNESS; |
7ba81444 MS |
3232 | else if (integer_types_same_name_p (TYPE_NAME (arg), |
3233 | "int") | |
3234 | && integer_types_same_name_p (TYPE_NAME (parm), | |
3235 | "long")) | |
c5aa993b JM |
3236 | return INTEGER_PROMOTION_BADNESS; |
3237 | else | |
1c5cb38e | 3238 | return INTEGER_CONVERSION_BADNESS; |
c5aa993b JM |
3239 | } |
3240 | else | |
1c5cb38e | 3241 | return INTEGER_CONVERSION_BADNESS; |
c5aa993b JM |
3242 | } |
3243 | else if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm)) | |
3244 | return INTEGER_PROMOTION_BADNESS; | |
3245 | else | |
1c5cb38e | 3246 | return INTEGER_CONVERSION_BADNESS; |
c5aa993b | 3247 | case TYPE_CODE_ENUM: |
4f2aea11 | 3248 | case TYPE_CODE_FLAGS: |
c5aa993b JM |
3249 | case TYPE_CODE_CHAR: |
3250 | case TYPE_CODE_RANGE: | |
3251 | case TYPE_CODE_BOOL: | |
3d567982 TT |
3252 | if (TYPE_DECLARED_CLASS (arg)) |
3253 | return INCOMPATIBLE_TYPE_BADNESS; | |
c5aa993b JM |
3254 | return INTEGER_PROMOTION_BADNESS; |
3255 | case TYPE_CODE_FLT: | |
3256 | return INT_FLOAT_CONVERSION_BADNESS; | |
3257 | case TYPE_CODE_PTR: | |
3258 | return NS_POINTER_CONVERSION_BADNESS; | |
3259 | default: | |
3260 | return INCOMPATIBLE_TYPE_BADNESS; | |
3261 | } | |
3262 | break; | |
3263 | case TYPE_CODE_ENUM: | |
3264 | switch (TYPE_CODE (arg)) | |
3265 | { | |
3266 | case TYPE_CODE_INT: | |
3267 | case TYPE_CODE_CHAR: | |
3268 | case TYPE_CODE_RANGE: | |
3269 | case TYPE_CODE_BOOL: | |
3270 | case TYPE_CODE_ENUM: | |
3d567982 TT |
3271 | if (TYPE_DECLARED_CLASS (parm) || TYPE_DECLARED_CLASS (arg)) |
3272 | return INCOMPATIBLE_TYPE_BADNESS; | |
1c5cb38e | 3273 | return INTEGER_CONVERSION_BADNESS; |
c5aa993b JM |
3274 | case TYPE_CODE_FLT: |
3275 | return INT_FLOAT_CONVERSION_BADNESS; | |
3276 | default: | |
3277 | return INCOMPATIBLE_TYPE_BADNESS; | |
3278 | } | |
3279 | break; | |
3280 | case TYPE_CODE_CHAR: | |
3281 | switch (TYPE_CODE (arg)) | |
3282 | { | |
3283 | case TYPE_CODE_RANGE: | |
3284 | case TYPE_CODE_BOOL: | |
3285 | case TYPE_CODE_ENUM: | |
3d567982 TT |
3286 | if (TYPE_DECLARED_CLASS (arg)) |
3287 | return INCOMPATIBLE_TYPE_BADNESS; | |
1c5cb38e | 3288 | return INTEGER_CONVERSION_BADNESS; |
c5aa993b JM |
3289 | case TYPE_CODE_FLT: |
3290 | return INT_FLOAT_CONVERSION_BADNESS; | |
3291 | case TYPE_CODE_INT: | |
3292 | if (TYPE_LENGTH (arg) > TYPE_LENGTH (parm)) | |
1c5cb38e | 3293 | return INTEGER_CONVERSION_BADNESS; |
c5aa993b JM |
3294 | else if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm)) |
3295 | return INTEGER_PROMOTION_BADNESS; | |
3296 | /* >>> !! else fall through !! <<< */ | |
3297 | case TYPE_CODE_CHAR: | |
7ba81444 MS |
3298 | /* Deal with signed, unsigned, and plain chars for C++ and |
3299 | with int cases falling through from previous case. */ | |
c5aa993b JM |
3300 | if (TYPE_NOSIGN (parm)) |
3301 | { | |
3302 | if (TYPE_NOSIGN (arg)) | |
6403aeea | 3303 | return EXACT_MATCH_BADNESS; |
c5aa993b | 3304 | else |
1c5cb38e | 3305 | return INTEGER_CONVERSION_BADNESS; |
c5aa993b JM |
3306 | } |
3307 | else if (TYPE_UNSIGNED (parm)) | |
3308 | { | |
3309 | if (TYPE_UNSIGNED (arg)) | |
6403aeea | 3310 | return EXACT_MATCH_BADNESS; |
c5aa993b JM |
3311 | else |
3312 | return INTEGER_PROMOTION_BADNESS; | |
3313 | } | |
3314 | else if (!TYPE_NOSIGN (arg) && !TYPE_UNSIGNED (arg)) | |
6403aeea | 3315 | return EXACT_MATCH_BADNESS; |
c5aa993b | 3316 | else |
1c5cb38e | 3317 | return INTEGER_CONVERSION_BADNESS; |
c5aa993b JM |
3318 | default: |
3319 | return INCOMPATIBLE_TYPE_BADNESS; | |
3320 | } | |
3321 | break; | |
3322 | case TYPE_CODE_RANGE: | |
3323 | switch (TYPE_CODE (arg)) | |
3324 | { | |
3325 | case TYPE_CODE_INT: | |
3326 | case TYPE_CODE_CHAR: | |
3327 | case TYPE_CODE_RANGE: | |
3328 | case TYPE_CODE_BOOL: | |
3329 | case TYPE_CODE_ENUM: | |
1c5cb38e | 3330 | return INTEGER_CONVERSION_BADNESS; |
c5aa993b JM |
3331 | case TYPE_CODE_FLT: |
3332 | return INT_FLOAT_CONVERSION_BADNESS; | |
3333 | default: | |
3334 | return INCOMPATIBLE_TYPE_BADNESS; | |
3335 | } | |
3336 | break; | |
3337 | case TYPE_CODE_BOOL: | |
3338 | switch (TYPE_CODE (arg)) | |
3339 | { | |
5b4f6e25 KS |
3340 | /* n3290 draft, section 4.12.1 (conv.bool): |
3341 | ||
3342 | "A prvalue of arithmetic, unscoped enumeration, pointer, or | |
3343 | pointer to member type can be converted to a prvalue of type | |
3344 | bool. A zero value, null pointer value, or null member pointer | |
3345 | value is converted to false; any other value is converted to | |
3346 | true. A prvalue of type std::nullptr_t can be converted to a | |
3347 | prvalue of type bool; the resulting value is false." */ | |
c5aa993b JM |
3348 | case TYPE_CODE_INT: |
3349 | case TYPE_CODE_CHAR: | |
c5aa993b JM |
3350 | case TYPE_CODE_ENUM: |
3351 | case TYPE_CODE_FLT: | |
5b4f6e25 | 3352 | case TYPE_CODE_MEMBERPTR: |
c5aa993b | 3353 | case TYPE_CODE_PTR: |
5b4f6e25 KS |
3354 | return BOOL_CONVERSION_BADNESS; |
3355 | case TYPE_CODE_RANGE: | |
3356 | return INCOMPATIBLE_TYPE_BADNESS; | |
c5aa993b | 3357 | case TYPE_CODE_BOOL: |
6403aeea | 3358 | return EXACT_MATCH_BADNESS; |
c5aa993b JM |
3359 | default: |
3360 | return INCOMPATIBLE_TYPE_BADNESS; | |
3361 | } | |
3362 | break; | |
3363 | case TYPE_CODE_FLT: | |
3364 | switch (TYPE_CODE (arg)) | |
3365 | { | |
3366 | case TYPE_CODE_FLT: | |
3367 | if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm)) | |
3368 | return FLOAT_PROMOTION_BADNESS; | |
3369 | else if (TYPE_LENGTH (arg) == TYPE_LENGTH (parm)) | |
6403aeea | 3370 | return EXACT_MATCH_BADNESS; |
c5aa993b JM |
3371 | else |
3372 | return FLOAT_CONVERSION_BADNESS; | |
3373 | case TYPE_CODE_INT: | |
3374 | case TYPE_CODE_BOOL: | |
3375 | case TYPE_CODE_ENUM: | |
3376 | case TYPE_CODE_RANGE: | |
3377 | case TYPE_CODE_CHAR: | |
3378 | return INT_FLOAT_CONVERSION_BADNESS; | |
3379 | default: | |
3380 | return INCOMPATIBLE_TYPE_BADNESS; | |
3381 | } | |
3382 | break; | |
3383 | case TYPE_CODE_COMPLEX: | |
3384 | switch (TYPE_CODE (arg)) | |
7ba81444 | 3385 | { /* Strictly not needed for C++, but... */ |
c5aa993b JM |
3386 | case TYPE_CODE_FLT: |
3387 | return FLOAT_PROMOTION_BADNESS; | |
3388 | case TYPE_CODE_COMPLEX: | |
6403aeea | 3389 | return EXACT_MATCH_BADNESS; |
c5aa993b JM |
3390 | default: |
3391 | return INCOMPATIBLE_TYPE_BADNESS; | |
3392 | } | |
3393 | break; | |
3394 | case TYPE_CODE_STRUCT: | |
0963b4bd | 3395 | /* currently same as TYPE_CODE_CLASS. */ |
c5aa993b JM |
3396 | switch (TYPE_CODE (arg)) |
3397 | { | |
3398 | case TYPE_CODE_STRUCT: | |
3399 | /* Check for derivation */ | |
a9d5ef47 SW |
3400 | rank.subrank = distance_to_ancestor (parm, arg, 0); |
3401 | if (rank.subrank >= 0) | |
3402 | return sum_ranks (BASE_CONVERSION_BADNESS, rank); | |
c5aa993b JM |
3403 | /* else fall through */ |
3404 | default: | |
3405 | return INCOMPATIBLE_TYPE_BADNESS; | |
3406 | } | |
3407 | break; | |
3408 | case TYPE_CODE_UNION: | |
3409 | switch (TYPE_CODE (arg)) | |
3410 | { | |
3411 | case TYPE_CODE_UNION: | |
3412 | default: | |
3413 | return INCOMPATIBLE_TYPE_BADNESS; | |
3414 | } | |
3415 | break; | |
0d5de010 | 3416 | case TYPE_CODE_MEMBERPTR: |
c5aa993b JM |
3417 | switch (TYPE_CODE (arg)) |
3418 | { | |
3419 | default: | |
3420 | return INCOMPATIBLE_TYPE_BADNESS; | |
3421 | } | |
3422 | break; | |
3423 | case TYPE_CODE_METHOD: | |
3424 | switch (TYPE_CODE (arg)) | |
3425 | { | |
3426 | ||
3427 | default: | |
3428 | return INCOMPATIBLE_TYPE_BADNESS; | |
3429 | } | |
3430 | break; | |
3431 | case TYPE_CODE_REF: | |
3432 | switch (TYPE_CODE (arg)) | |
3433 | { | |
3434 | ||
3435 | default: | |
3436 | return INCOMPATIBLE_TYPE_BADNESS; | |
3437 | } | |
3438 | ||
3439 | break; | |
3440 | case TYPE_CODE_SET: | |
3441 | switch (TYPE_CODE (arg)) | |
3442 | { | |
3443 | /* Not in C++ */ | |
3444 | case TYPE_CODE_SET: | |
7ba81444 | 3445 | return rank_one_type (TYPE_FIELD_TYPE (parm, 0), |
da096638 | 3446 | TYPE_FIELD_TYPE (arg, 0), NULL); |
c5aa993b JM |
3447 | default: |
3448 | return INCOMPATIBLE_TYPE_BADNESS; | |
3449 | } | |
3450 | break; | |
3451 | case TYPE_CODE_VOID: | |
3452 | default: | |
3453 | return INCOMPATIBLE_TYPE_BADNESS; | |
3454 | } /* switch (TYPE_CODE (arg)) */ | |
c906108c SS |
3455 | } |
3456 | ||
0963b4bd | 3457 | /* End of functions for overload resolution. */ |
5212577a DE |
3458 | \f |
3459 | /* Routines to pretty-print types. */ | |
c906108c | 3460 | |
c906108c | 3461 | static void |
fba45db2 | 3462 | print_bit_vector (B_TYPE *bits, int nbits) |
c906108c SS |
3463 | { |
3464 | int bitno; | |
3465 | ||
3466 | for (bitno = 0; bitno < nbits; bitno++) | |
3467 | { | |
3468 | if ((bitno % 8) == 0) | |
3469 | { | |
3470 | puts_filtered (" "); | |
3471 | } | |
3472 | if (B_TST (bits, bitno)) | |
a3f17187 | 3473 | printf_filtered (("1")); |
c906108c | 3474 | else |
a3f17187 | 3475 | printf_filtered (("0")); |
c906108c SS |
3476 | } |
3477 | } | |
3478 | ||
ad2f7632 | 3479 | /* Note the first arg should be the "this" pointer, we may not want to |
7ba81444 MS |
3480 | include it since we may get into a infinitely recursive |
3481 | situation. */ | |
c906108c SS |
3482 | |
3483 | static void | |
ad2f7632 | 3484 | print_arg_types (struct field *args, int nargs, int spaces) |
c906108c SS |
3485 | { |
3486 | if (args != NULL) | |
3487 | { | |
ad2f7632 DJ |
3488 | int i; |
3489 | ||
3490 | for (i = 0; i < nargs; i++) | |
3491 | recursive_dump_type (args[i].type, spaces + 2); | |
c906108c SS |
3492 | } |
3493 | } | |
3494 | ||
d6a843b5 JK |
3495 | int |
3496 | field_is_static (struct field *f) | |
3497 | { | |
3498 | /* "static" fields are the fields whose location is not relative | |
3499 | to the address of the enclosing struct. It would be nice to | |
3500 | have a dedicated flag that would be set for static fields when | |
3501 | the type is being created. But in practice, checking the field | |
254e6b9e | 3502 | loc_kind should give us an accurate answer. */ |
d6a843b5 JK |
3503 | return (FIELD_LOC_KIND (*f) == FIELD_LOC_KIND_PHYSNAME |
3504 | || FIELD_LOC_KIND (*f) == FIELD_LOC_KIND_PHYSADDR); | |
3505 | } | |
3506 | ||
c906108c | 3507 | static void |
fba45db2 | 3508 | dump_fn_fieldlists (struct type *type, int spaces) |
c906108c SS |
3509 | { |
3510 | int method_idx; | |
3511 | int overload_idx; | |
3512 | struct fn_field *f; | |
3513 | ||
3514 | printfi_filtered (spaces, "fn_fieldlists "); | |
d4f3574e | 3515 | gdb_print_host_address (TYPE_FN_FIELDLISTS (type), gdb_stdout); |
c906108c SS |
3516 | printf_filtered ("\n"); |
3517 | for (method_idx = 0; method_idx < TYPE_NFN_FIELDS (type); method_idx++) | |
3518 | { | |
3519 | f = TYPE_FN_FIELDLIST1 (type, method_idx); | |
3520 | printfi_filtered (spaces + 2, "[%d] name '%s' (", | |
3521 | method_idx, | |
3522 | TYPE_FN_FIELDLIST_NAME (type, method_idx)); | |
d4f3574e SS |
3523 | gdb_print_host_address (TYPE_FN_FIELDLIST_NAME (type, method_idx), |
3524 | gdb_stdout); | |
a3f17187 | 3525 | printf_filtered (_(") length %d\n"), |
c906108c SS |
3526 | TYPE_FN_FIELDLIST_LENGTH (type, method_idx)); |
3527 | for (overload_idx = 0; | |
3528 | overload_idx < TYPE_FN_FIELDLIST_LENGTH (type, method_idx); | |
3529 | overload_idx++) | |
3530 | { | |
3531 | printfi_filtered (spaces + 4, "[%d] physname '%s' (", | |
3532 | overload_idx, | |
3533 | TYPE_FN_FIELD_PHYSNAME (f, overload_idx)); | |
d4f3574e SS |
3534 | gdb_print_host_address (TYPE_FN_FIELD_PHYSNAME (f, overload_idx), |
3535 | gdb_stdout); | |
c906108c SS |
3536 | printf_filtered (")\n"); |
3537 | printfi_filtered (spaces + 8, "type "); | |
7ba81444 MS |
3538 | gdb_print_host_address (TYPE_FN_FIELD_TYPE (f, overload_idx), |
3539 | gdb_stdout); | |
c906108c SS |
3540 | printf_filtered ("\n"); |
3541 | ||
3542 | recursive_dump_type (TYPE_FN_FIELD_TYPE (f, overload_idx), | |
3543 | spaces + 8 + 2); | |
3544 | ||
3545 | printfi_filtered (spaces + 8, "args "); | |
7ba81444 MS |
3546 | gdb_print_host_address (TYPE_FN_FIELD_ARGS (f, overload_idx), |
3547 | gdb_stdout); | |
c906108c SS |
3548 | printf_filtered ("\n"); |
3549 | ||
ad2f7632 | 3550 | print_arg_types (TYPE_FN_FIELD_ARGS (f, overload_idx), |
7ba81444 MS |
3551 | TYPE_NFIELDS (TYPE_FN_FIELD_TYPE (f, |
3552 | overload_idx)), | |
ad2f7632 | 3553 | spaces); |
c906108c | 3554 | printfi_filtered (spaces + 8, "fcontext "); |
d4f3574e SS |
3555 | gdb_print_host_address (TYPE_FN_FIELD_FCONTEXT (f, overload_idx), |
3556 | gdb_stdout); | |
c906108c SS |
3557 | printf_filtered ("\n"); |
3558 | ||
3559 | printfi_filtered (spaces + 8, "is_const %d\n", | |
3560 | TYPE_FN_FIELD_CONST (f, overload_idx)); | |
3561 | printfi_filtered (spaces + 8, "is_volatile %d\n", | |
3562 | TYPE_FN_FIELD_VOLATILE (f, overload_idx)); | |
3563 | printfi_filtered (spaces + 8, "is_private %d\n", | |
3564 | TYPE_FN_FIELD_PRIVATE (f, overload_idx)); | |
3565 | printfi_filtered (spaces + 8, "is_protected %d\n", | |
3566 | TYPE_FN_FIELD_PROTECTED (f, overload_idx)); | |
3567 | printfi_filtered (spaces + 8, "is_stub %d\n", | |
3568 | TYPE_FN_FIELD_STUB (f, overload_idx)); | |
3569 | printfi_filtered (spaces + 8, "voffset %u\n", | |
3570 | TYPE_FN_FIELD_VOFFSET (f, overload_idx)); | |
3571 | } | |
3572 | } | |
3573 | } | |
3574 | ||
3575 | static void | |
fba45db2 | 3576 | print_cplus_stuff (struct type *type, int spaces) |
c906108c SS |
3577 | { |
3578 | printfi_filtered (spaces, "n_baseclasses %d\n", | |
3579 | TYPE_N_BASECLASSES (type)); | |
3580 | printfi_filtered (spaces, "nfn_fields %d\n", | |
3581 | TYPE_NFN_FIELDS (type)); | |
c906108c SS |
3582 | if (TYPE_N_BASECLASSES (type) > 0) |
3583 | { | |
3584 | printfi_filtered (spaces, "virtual_field_bits (%d bits at *", | |
3585 | TYPE_N_BASECLASSES (type)); | |
7ba81444 MS |
3586 | gdb_print_host_address (TYPE_FIELD_VIRTUAL_BITS (type), |
3587 | gdb_stdout); | |
c906108c SS |
3588 | printf_filtered (")"); |
3589 | ||
3590 | print_bit_vector (TYPE_FIELD_VIRTUAL_BITS (type), | |
3591 | TYPE_N_BASECLASSES (type)); | |
3592 | puts_filtered ("\n"); | |
3593 | } | |
3594 | if (TYPE_NFIELDS (type) > 0) | |
3595 | { | |
3596 | if (TYPE_FIELD_PRIVATE_BITS (type) != NULL) | |
3597 | { | |
7ba81444 MS |
3598 | printfi_filtered (spaces, |
3599 | "private_field_bits (%d bits at *", | |
c906108c | 3600 | TYPE_NFIELDS (type)); |
7ba81444 MS |
3601 | gdb_print_host_address (TYPE_FIELD_PRIVATE_BITS (type), |
3602 | gdb_stdout); | |
c906108c SS |
3603 | printf_filtered (")"); |
3604 | print_bit_vector (TYPE_FIELD_PRIVATE_BITS (type), | |
3605 | TYPE_NFIELDS (type)); | |
3606 | puts_filtered ("\n"); | |
3607 | } | |
3608 | if (TYPE_FIELD_PROTECTED_BITS (type) != NULL) | |
3609 | { | |
7ba81444 MS |
3610 | printfi_filtered (spaces, |
3611 | "protected_field_bits (%d bits at *", | |
c906108c | 3612 | TYPE_NFIELDS (type)); |
7ba81444 MS |
3613 | gdb_print_host_address (TYPE_FIELD_PROTECTED_BITS (type), |
3614 | gdb_stdout); | |
c906108c SS |
3615 | printf_filtered (")"); |
3616 | print_bit_vector (TYPE_FIELD_PROTECTED_BITS (type), | |
3617 | TYPE_NFIELDS (type)); | |
3618 | puts_filtered ("\n"); | |
3619 | } | |
3620 | } | |
3621 | if (TYPE_NFN_FIELDS (type) > 0) | |
3622 | { | |
3623 | dump_fn_fieldlists (type, spaces); | |
3624 | } | |
3625 | } | |
3626 | ||
b4ba55a1 JB |
3627 | /* Print the contents of the TYPE's type_specific union, assuming that |
3628 | its type-specific kind is TYPE_SPECIFIC_GNAT_STUFF. */ | |
3629 | ||
3630 | static void | |
3631 | print_gnat_stuff (struct type *type, int spaces) | |
3632 | { | |
3633 | struct type *descriptive_type = TYPE_DESCRIPTIVE_TYPE (type); | |
3634 | ||
3635 | recursive_dump_type (descriptive_type, spaces + 2); | |
3636 | } | |
3637 | ||
c906108c SS |
3638 | static struct obstack dont_print_type_obstack; |
3639 | ||
3640 | void | |
fba45db2 | 3641 | recursive_dump_type (struct type *type, int spaces) |
c906108c SS |
3642 | { |
3643 | int idx; | |
3644 | ||
3645 | if (spaces == 0) | |
3646 | obstack_begin (&dont_print_type_obstack, 0); | |
3647 | ||
3648 | if (TYPE_NFIELDS (type) > 0 | |
b4ba55a1 | 3649 | || (HAVE_CPLUS_STRUCT (type) && TYPE_NFN_FIELDS (type) > 0)) |
c906108c SS |
3650 | { |
3651 | struct type **first_dont_print | |
7ba81444 | 3652 | = (struct type **) obstack_base (&dont_print_type_obstack); |
c906108c | 3653 | |
7ba81444 MS |
3654 | int i = (struct type **) |
3655 | obstack_next_free (&dont_print_type_obstack) - first_dont_print; | |
c906108c SS |
3656 | |
3657 | while (--i >= 0) | |
3658 | { | |
3659 | if (type == first_dont_print[i]) | |
3660 | { | |
3661 | printfi_filtered (spaces, "type node "); | |
d4f3574e | 3662 | gdb_print_host_address (type, gdb_stdout); |
a3f17187 | 3663 | printf_filtered (_(" <same as already seen type>\n")); |
c906108c SS |
3664 | return; |
3665 | } | |
3666 | } | |
3667 | ||
3668 | obstack_ptr_grow (&dont_print_type_obstack, type); | |
3669 | } | |
3670 | ||
3671 | printfi_filtered (spaces, "type node "); | |
d4f3574e | 3672 | gdb_print_host_address (type, gdb_stdout); |
c906108c SS |
3673 | printf_filtered ("\n"); |
3674 | printfi_filtered (spaces, "name '%s' (", | |
3675 | TYPE_NAME (type) ? TYPE_NAME (type) : "<NULL>"); | |
d4f3574e | 3676 | gdb_print_host_address (TYPE_NAME (type), gdb_stdout); |
c906108c | 3677 | printf_filtered (")\n"); |
e9e79dd9 FF |
3678 | printfi_filtered (spaces, "tagname '%s' (", |
3679 | TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : "<NULL>"); | |
3680 | gdb_print_host_address (TYPE_TAG_NAME (type), gdb_stdout); | |
3681 | printf_filtered (")\n"); | |
c906108c SS |
3682 | printfi_filtered (spaces, "code 0x%x ", TYPE_CODE (type)); |
3683 | switch (TYPE_CODE (type)) | |
3684 | { | |
c5aa993b JM |
3685 | case TYPE_CODE_UNDEF: |
3686 | printf_filtered ("(TYPE_CODE_UNDEF)"); | |
3687 | break; | |
3688 | case TYPE_CODE_PTR: | |
3689 | printf_filtered ("(TYPE_CODE_PTR)"); | |
3690 | break; | |
3691 | case TYPE_CODE_ARRAY: | |
3692 | printf_filtered ("(TYPE_CODE_ARRAY)"); | |
3693 | break; | |
3694 | case TYPE_CODE_STRUCT: | |
3695 | printf_filtered ("(TYPE_CODE_STRUCT)"); | |
3696 | break; | |
3697 | case TYPE_CODE_UNION: | |
3698 | printf_filtered ("(TYPE_CODE_UNION)"); | |
3699 | break; | |
3700 | case TYPE_CODE_ENUM: | |
3701 | printf_filtered ("(TYPE_CODE_ENUM)"); | |
3702 | break; | |
4f2aea11 MK |
3703 | case TYPE_CODE_FLAGS: |
3704 | printf_filtered ("(TYPE_CODE_FLAGS)"); | |
3705 | break; | |
c5aa993b JM |
3706 | case TYPE_CODE_FUNC: |
3707 | printf_filtered ("(TYPE_CODE_FUNC)"); | |
3708 | break; | |
3709 | case TYPE_CODE_INT: | |
3710 | printf_filtered ("(TYPE_CODE_INT)"); | |
3711 | break; | |
3712 | case TYPE_CODE_FLT: | |
3713 | printf_filtered ("(TYPE_CODE_FLT)"); | |
3714 | break; | |
3715 | case TYPE_CODE_VOID: | |
3716 | printf_filtered ("(TYPE_CODE_VOID)"); | |
3717 | break; | |
3718 | case TYPE_CODE_SET: | |
3719 | printf_filtered ("(TYPE_CODE_SET)"); | |
3720 | break; | |
3721 | case TYPE_CODE_RANGE: | |
3722 | printf_filtered ("(TYPE_CODE_RANGE)"); | |
3723 | break; | |
3724 | case TYPE_CODE_STRING: | |
3725 | printf_filtered ("(TYPE_CODE_STRING)"); | |
3726 | break; | |
3727 | case TYPE_CODE_ERROR: | |
3728 | printf_filtered ("(TYPE_CODE_ERROR)"); | |
3729 | break; | |
0d5de010 DJ |
3730 | case TYPE_CODE_MEMBERPTR: |
3731 | printf_filtered ("(TYPE_CODE_MEMBERPTR)"); | |
3732 | break; | |
3733 | case TYPE_CODE_METHODPTR: | |
3734 | printf_filtered ("(TYPE_CODE_METHODPTR)"); | |
c5aa993b JM |
3735 | break; |
3736 | case TYPE_CODE_METHOD: | |
3737 | printf_filtered ("(TYPE_CODE_METHOD)"); | |
3738 | break; | |
3739 | case TYPE_CODE_REF: | |
3740 | printf_filtered ("(TYPE_CODE_REF)"); | |
3741 | break; | |
3742 | case TYPE_CODE_CHAR: | |
3743 | printf_filtered ("(TYPE_CODE_CHAR)"); | |
3744 | break; | |
3745 | case TYPE_CODE_BOOL: | |
3746 | printf_filtered ("(TYPE_CODE_BOOL)"); | |
3747 | break; | |
e9e79dd9 FF |
3748 | case TYPE_CODE_COMPLEX: |
3749 | printf_filtered ("(TYPE_CODE_COMPLEX)"); | |
3750 | break; | |
c5aa993b JM |
3751 | case TYPE_CODE_TYPEDEF: |
3752 | printf_filtered ("(TYPE_CODE_TYPEDEF)"); | |
3753 | break; | |
5c4e30ca DC |
3754 | case TYPE_CODE_NAMESPACE: |
3755 | printf_filtered ("(TYPE_CODE_NAMESPACE)"); | |
3756 | break; | |
c5aa993b JM |
3757 | default: |
3758 | printf_filtered ("(UNKNOWN TYPE CODE)"); | |
3759 | break; | |
c906108c SS |
3760 | } |
3761 | puts_filtered ("\n"); | |
3762 | printfi_filtered (spaces, "length %d\n", TYPE_LENGTH (type)); | |
e9bb382b UW |
3763 | if (TYPE_OBJFILE_OWNED (type)) |
3764 | { | |
3765 | printfi_filtered (spaces, "objfile "); | |
3766 | gdb_print_host_address (TYPE_OWNER (type).objfile, gdb_stdout); | |
3767 | } | |
3768 | else | |
3769 | { | |
3770 | printfi_filtered (spaces, "gdbarch "); | |
3771 | gdb_print_host_address (TYPE_OWNER (type).gdbarch, gdb_stdout); | |
3772 | } | |
c906108c SS |
3773 | printf_filtered ("\n"); |
3774 | printfi_filtered (spaces, "target_type "); | |
d4f3574e | 3775 | gdb_print_host_address (TYPE_TARGET_TYPE (type), gdb_stdout); |
c906108c SS |
3776 | printf_filtered ("\n"); |
3777 | if (TYPE_TARGET_TYPE (type) != NULL) | |
3778 | { | |
3779 | recursive_dump_type (TYPE_TARGET_TYPE (type), spaces + 2); | |
3780 | } | |
3781 | printfi_filtered (spaces, "pointer_type "); | |
d4f3574e | 3782 | gdb_print_host_address (TYPE_POINTER_TYPE (type), gdb_stdout); |
c906108c SS |
3783 | printf_filtered ("\n"); |
3784 | printfi_filtered (spaces, "reference_type "); | |
d4f3574e | 3785 | gdb_print_host_address (TYPE_REFERENCE_TYPE (type), gdb_stdout); |
c906108c | 3786 | printf_filtered ("\n"); |
2fdde8f8 DJ |
3787 | printfi_filtered (spaces, "type_chain "); |
3788 | gdb_print_host_address (TYPE_CHAIN (type), gdb_stdout); | |
e9e79dd9 | 3789 | printf_filtered ("\n"); |
7ba81444 MS |
3790 | printfi_filtered (spaces, "instance_flags 0x%x", |
3791 | TYPE_INSTANCE_FLAGS (type)); | |
2fdde8f8 DJ |
3792 | if (TYPE_CONST (type)) |
3793 | { | |
3794 | puts_filtered (" TYPE_FLAG_CONST"); | |
3795 | } | |
3796 | if (TYPE_VOLATILE (type)) | |
3797 | { | |
3798 | puts_filtered (" TYPE_FLAG_VOLATILE"); | |
3799 | } | |
3800 | if (TYPE_CODE_SPACE (type)) | |
3801 | { | |
3802 | puts_filtered (" TYPE_FLAG_CODE_SPACE"); | |
3803 | } | |
3804 | if (TYPE_DATA_SPACE (type)) | |
3805 | { | |
3806 | puts_filtered (" TYPE_FLAG_DATA_SPACE"); | |
3807 | } | |
8b2dbe47 KB |
3808 | if (TYPE_ADDRESS_CLASS_1 (type)) |
3809 | { | |
3810 | puts_filtered (" TYPE_FLAG_ADDRESS_CLASS_1"); | |
3811 | } | |
3812 | if (TYPE_ADDRESS_CLASS_2 (type)) | |
3813 | { | |
3814 | puts_filtered (" TYPE_FLAG_ADDRESS_CLASS_2"); | |
3815 | } | |
06d66ee9 TT |
3816 | if (TYPE_RESTRICT (type)) |
3817 | { | |
3818 | puts_filtered (" TYPE_FLAG_RESTRICT"); | |
3819 | } | |
2fdde8f8 | 3820 | puts_filtered ("\n"); |
876cecd0 TT |
3821 | |
3822 | printfi_filtered (spaces, "flags"); | |
762a036f | 3823 | if (TYPE_UNSIGNED (type)) |
c906108c SS |
3824 | { |
3825 | puts_filtered (" TYPE_FLAG_UNSIGNED"); | |
3826 | } | |
762a036f FF |
3827 | if (TYPE_NOSIGN (type)) |
3828 | { | |
3829 | puts_filtered (" TYPE_FLAG_NOSIGN"); | |
3830 | } | |
3831 | if (TYPE_STUB (type)) | |
c906108c SS |
3832 | { |
3833 | puts_filtered (" TYPE_FLAG_STUB"); | |
3834 | } | |
762a036f FF |
3835 | if (TYPE_TARGET_STUB (type)) |
3836 | { | |
3837 | puts_filtered (" TYPE_FLAG_TARGET_STUB"); | |
3838 | } | |
3839 | if (TYPE_STATIC (type)) | |
3840 | { | |
3841 | puts_filtered (" TYPE_FLAG_STATIC"); | |
3842 | } | |
762a036f FF |
3843 | if (TYPE_PROTOTYPED (type)) |
3844 | { | |
3845 | puts_filtered (" TYPE_FLAG_PROTOTYPED"); | |
3846 | } | |
3847 | if (TYPE_INCOMPLETE (type)) | |
3848 | { | |
3849 | puts_filtered (" TYPE_FLAG_INCOMPLETE"); | |
3850 | } | |
762a036f FF |
3851 | if (TYPE_VARARGS (type)) |
3852 | { | |
3853 | puts_filtered (" TYPE_FLAG_VARARGS"); | |
3854 | } | |
f5f8a009 EZ |
3855 | /* This is used for things like AltiVec registers on ppc. Gcc emits |
3856 | an attribute for the array type, which tells whether or not we | |
3857 | have a vector, instead of a regular array. */ | |
3858 | if (TYPE_VECTOR (type)) | |
3859 | { | |
3860 | puts_filtered (" TYPE_FLAG_VECTOR"); | |
3861 | } | |
876cecd0 TT |
3862 | if (TYPE_FIXED_INSTANCE (type)) |
3863 | { | |
3864 | puts_filtered (" TYPE_FIXED_INSTANCE"); | |
3865 | } | |
3866 | if (TYPE_STUB_SUPPORTED (type)) | |
3867 | { | |
3868 | puts_filtered (" TYPE_STUB_SUPPORTED"); | |
3869 | } | |
3870 | if (TYPE_NOTTEXT (type)) | |
3871 | { | |
3872 | puts_filtered (" TYPE_NOTTEXT"); | |
3873 | } | |
c906108c SS |
3874 | puts_filtered ("\n"); |
3875 | printfi_filtered (spaces, "nfields %d ", TYPE_NFIELDS (type)); | |
d4f3574e | 3876 | gdb_print_host_address (TYPE_FIELDS (type), gdb_stdout); |
c906108c SS |
3877 | puts_filtered ("\n"); |
3878 | for (idx = 0; idx < TYPE_NFIELDS (type); idx++) | |
3879 | { | |
14e75d8e JK |
3880 | if (TYPE_CODE (type) == TYPE_CODE_ENUM) |
3881 | printfi_filtered (spaces + 2, | |
3882 | "[%d] enumval %s type ", | |
3883 | idx, plongest (TYPE_FIELD_ENUMVAL (type, idx))); | |
3884 | else | |
3885 | printfi_filtered (spaces + 2, | |
3886 | "[%d] bitpos %d bitsize %d type ", | |
3887 | idx, TYPE_FIELD_BITPOS (type, idx), | |
3888 | TYPE_FIELD_BITSIZE (type, idx)); | |
d4f3574e | 3889 | gdb_print_host_address (TYPE_FIELD_TYPE (type, idx), gdb_stdout); |
c906108c SS |
3890 | printf_filtered (" name '%s' (", |
3891 | TYPE_FIELD_NAME (type, idx) != NULL | |
3892 | ? TYPE_FIELD_NAME (type, idx) | |
3893 | : "<NULL>"); | |
d4f3574e | 3894 | gdb_print_host_address (TYPE_FIELD_NAME (type, idx), gdb_stdout); |
c906108c SS |
3895 | printf_filtered (")\n"); |
3896 | if (TYPE_FIELD_TYPE (type, idx) != NULL) | |
3897 | { | |
3898 | recursive_dump_type (TYPE_FIELD_TYPE (type, idx), spaces + 4); | |
3899 | } | |
3900 | } | |
43bbcdc2 PH |
3901 | if (TYPE_CODE (type) == TYPE_CODE_RANGE) |
3902 | { | |
3903 | printfi_filtered (spaces, "low %s%s high %s%s\n", | |
3904 | plongest (TYPE_LOW_BOUND (type)), | |
3905 | TYPE_LOW_BOUND_UNDEFINED (type) ? " (undefined)" : "", | |
3906 | plongest (TYPE_HIGH_BOUND (type)), | |
3e43a32a MS |
3907 | TYPE_HIGH_BOUND_UNDEFINED (type) |
3908 | ? " (undefined)" : ""); | |
43bbcdc2 | 3909 | } |
c906108c | 3910 | printfi_filtered (spaces, "vptr_basetype "); |
d4f3574e | 3911 | gdb_print_host_address (TYPE_VPTR_BASETYPE (type), gdb_stdout); |
c906108c SS |
3912 | puts_filtered ("\n"); |
3913 | if (TYPE_VPTR_BASETYPE (type) != NULL) | |
3914 | { | |
3915 | recursive_dump_type (TYPE_VPTR_BASETYPE (type), spaces + 2); | |
3916 | } | |
7ba81444 MS |
3917 | printfi_filtered (spaces, "vptr_fieldno %d\n", |
3918 | TYPE_VPTR_FIELDNO (type)); | |
c906108c | 3919 | |
b4ba55a1 JB |
3920 | switch (TYPE_SPECIFIC_FIELD (type)) |
3921 | { | |
3922 | case TYPE_SPECIFIC_CPLUS_STUFF: | |
3923 | printfi_filtered (spaces, "cplus_stuff "); | |
3924 | gdb_print_host_address (TYPE_CPLUS_SPECIFIC (type), | |
3925 | gdb_stdout); | |
3926 | puts_filtered ("\n"); | |
3927 | print_cplus_stuff (type, spaces); | |
3928 | break; | |
8da61cc4 | 3929 | |
b4ba55a1 JB |
3930 | case TYPE_SPECIFIC_GNAT_STUFF: |
3931 | printfi_filtered (spaces, "gnat_stuff "); | |
3932 | gdb_print_host_address (TYPE_GNAT_SPECIFIC (type), gdb_stdout); | |
3933 | puts_filtered ("\n"); | |
3934 | print_gnat_stuff (type, spaces); | |
3935 | break; | |
701c159d | 3936 | |
b4ba55a1 JB |
3937 | case TYPE_SPECIFIC_FLOATFORMAT: |
3938 | printfi_filtered (spaces, "floatformat "); | |
3939 | if (TYPE_FLOATFORMAT (type) == NULL) | |
3940 | puts_filtered ("(null)"); | |
3941 | else | |
3942 | { | |
3943 | puts_filtered ("{ "); | |
3944 | if (TYPE_FLOATFORMAT (type)[0] == NULL | |
3945 | || TYPE_FLOATFORMAT (type)[0]->name == NULL) | |
3946 | puts_filtered ("(null)"); | |
3947 | else | |
3948 | puts_filtered (TYPE_FLOATFORMAT (type)[0]->name); | |
3949 | ||
3950 | puts_filtered (", "); | |
3951 | if (TYPE_FLOATFORMAT (type)[1] == NULL | |
3952 | || TYPE_FLOATFORMAT (type)[1]->name == NULL) | |
3953 | puts_filtered ("(null)"); | |
3954 | else | |
3955 | puts_filtered (TYPE_FLOATFORMAT (type)[1]->name); | |
3956 | ||
3957 | puts_filtered (" }"); | |
3958 | } | |
3959 | puts_filtered ("\n"); | |
3960 | break; | |
c906108c | 3961 | |
b6cdc2c1 | 3962 | case TYPE_SPECIFIC_FUNC: |
b4ba55a1 JB |
3963 | printfi_filtered (spaces, "calling_convention %d\n", |
3964 | TYPE_CALLING_CONVENTION (type)); | |
b6cdc2c1 | 3965 | /* tail_call_list is not printed. */ |
b4ba55a1 | 3966 | break; |
c906108c | 3967 | } |
b4ba55a1 | 3968 | |
c906108c SS |
3969 | if (spaces == 0) |
3970 | obstack_free (&dont_print_type_obstack, NULL); | |
3971 | } | |
5212577a | 3972 | \f |
ae5a43e0 DJ |
3973 | /* Trivial helpers for the libiberty hash table, for mapping one |
3974 | type to another. */ | |
3975 | ||
3976 | struct type_pair | |
3977 | { | |
3978 | struct type *old, *new; | |
3979 | }; | |
3980 | ||
3981 | static hashval_t | |
3982 | type_pair_hash (const void *item) | |
3983 | { | |
3984 | const struct type_pair *pair = item; | |
d8734c88 | 3985 | |
ae5a43e0 DJ |
3986 | return htab_hash_pointer (pair->old); |
3987 | } | |
3988 | ||
3989 | static int | |
3990 | type_pair_eq (const void *item_lhs, const void *item_rhs) | |
3991 | { | |
3992 | const struct type_pair *lhs = item_lhs, *rhs = item_rhs; | |
d8734c88 | 3993 | |
ae5a43e0 DJ |
3994 | return lhs->old == rhs->old; |
3995 | } | |
3996 | ||
3997 | /* Allocate the hash table used by copy_type_recursive to walk | |
3998 | types without duplicates. We use OBJFILE's obstack, because | |
3999 | OBJFILE is about to be deleted. */ | |
4000 | ||
4001 | htab_t | |
4002 | create_copied_types_hash (struct objfile *objfile) | |
4003 | { | |
4004 | return htab_create_alloc_ex (1, type_pair_hash, type_pair_eq, | |
4005 | NULL, &objfile->objfile_obstack, | |
4006 | hashtab_obstack_allocate, | |
4007 | dummy_obstack_deallocate); | |
4008 | } | |
4009 | ||
7ba81444 MS |
4010 | /* Recursively copy (deep copy) TYPE, if it is associated with |
4011 | OBJFILE. Return a new type allocated using malloc, a saved type if | |
4012 | we have already visited TYPE (using COPIED_TYPES), or TYPE if it is | |
4013 | not associated with OBJFILE. */ | |
ae5a43e0 DJ |
4014 | |
4015 | struct type * | |
7ba81444 MS |
4016 | copy_type_recursive (struct objfile *objfile, |
4017 | struct type *type, | |
ae5a43e0 DJ |
4018 | htab_t copied_types) |
4019 | { | |
4020 | struct type_pair *stored, pair; | |
4021 | void **slot; | |
4022 | struct type *new_type; | |
4023 | ||
e9bb382b | 4024 | if (! TYPE_OBJFILE_OWNED (type)) |
ae5a43e0 DJ |
4025 | return type; |
4026 | ||
7ba81444 MS |
4027 | /* This type shouldn't be pointing to any types in other objfiles; |
4028 | if it did, the type might disappear unexpectedly. */ | |
ae5a43e0 DJ |
4029 | gdb_assert (TYPE_OBJFILE (type) == objfile); |
4030 | ||
4031 | pair.old = type; | |
4032 | slot = htab_find_slot (copied_types, &pair, INSERT); | |
4033 | if (*slot != NULL) | |
4034 | return ((struct type_pair *) *slot)->new; | |
4035 | ||
e9bb382b | 4036 | new_type = alloc_type_arch (get_type_arch (type)); |
ae5a43e0 DJ |
4037 | |
4038 | /* We must add the new type to the hash table immediately, in case | |
4039 | we encounter this type again during a recursive call below. */ | |
3e43a32a MS |
4040 | stored |
4041 | = obstack_alloc (&objfile->objfile_obstack, sizeof (struct type_pair)); | |
ae5a43e0 DJ |
4042 | stored->old = type; |
4043 | stored->new = new_type; | |
4044 | *slot = stored; | |
4045 | ||
876cecd0 TT |
4046 | /* Copy the common fields of types. For the main type, we simply |
4047 | copy the entire thing and then update specific fields as needed. */ | |
4048 | *TYPE_MAIN_TYPE (new_type) = *TYPE_MAIN_TYPE (type); | |
e9bb382b UW |
4049 | TYPE_OBJFILE_OWNED (new_type) = 0; |
4050 | TYPE_OWNER (new_type).gdbarch = get_type_arch (type); | |
876cecd0 | 4051 | |
ae5a43e0 DJ |
4052 | if (TYPE_NAME (type)) |
4053 | TYPE_NAME (new_type) = xstrdup (TYPE_NAME (type)); | |
4054 | if (TYPE_TAG_NAME (type)) | |
4055 | TYPE_TAG_NAME (new_type) = xstrdup (TYPE_TAG_NAME (type)); | |
ae5a43e0 DJ |
4056 | |
4057 | TYPE_INSTANCE_FLAGS (new_type) = TYPE_INSTANCE_FLAGS (type); | |
4058 | TYPE_LENGTH (new_type) = TYPE_LENGTH (type); | |
4059 | ||
4060 | /* Copy the fields. */ | |
ae5a43e0 DJ |
4061 | if (TYPE_NFIELDS (type)) |
4062 | { | |
4063 | int i, nfields; | |
4064 | ||
4065 | nfields = TYPE_NFIELDS (type); | |
fc270c35 | 4066 | TYPE_FIELDS (new_type) = XCNEWVEC (struct field, nfields); |
ae5a43e0 DJ |
4067 | for (i = 0; i < nfields; i++) |
4068 | { | |
7ba81444 MS |
4069 | TYPE_FIELD_ARTIFICIAL (new_type, i) = |
4070 | TYPE_FIELD_ARTIFICIAL (type, i); | |
ae5a43e0 DJ |
4071 | TYPE_FIELD_BITSIZE (new_type, i) = TYPE_FIELD_BITSIZE (type, i); |
4072 | if (TYPE_FIELD_TYPE (type, i)) | |
4073 | TYPE_FIELD_TYPE (new_type, i) | |
4074 | = copy_type_recursive (objfile, TYPE_FIELD_TYPE (type, i), | |
4075 | copied_types); | |
4076 | if (TYPE_FIELD_NAME (type, i)) | |
7ba81444 MS |
4077 | TYPE_FIELD_NAME (new_type, i) = |
4078 | xstrdup (TYPE_FIELD_NAME (type, i)); | |
d6a843b5 | 4079 | switch (TYPE_FIELD_LOC_KIND (type, i)) |
ae5a43e0 | 4080 | { |
d6a843b5 JK |
4081 | case FIELD_LOC_KIND_BITPOS: |
4082 | SET_FIELD_BITPOS (TYPE_FIELD (new_type, i), | |
4083 | TYPE_FIELD_BITPOS (type, i)); | |
4084 | break; | |
14e75d8e JK |
4085 | case FIELD_LOC_KIND_ENUMVAL: |
4086 | SET_FIELD_ENUMVAL (TYPE_FIELD (new_type, i), | |
4087 | TYPE_FIELD_ENUMVAL (type, i)); | |
4088 | break; | |
d6a843b5 JK |
4089 | case FIELD_LOC_KIND_PHYSADDR: |
4090 | SET_FIELD_PHYSADDR (TYPE_FIELD (new_type, i), | |
4091 | TYPE_FIELD_STATIC_PHYSADDR (type, i)); | |
4092 | break; | |
4093 | case FIELD_LOC_KIND_PHYSNAME: | |
4094 | SET_FIELD_PHYSNAME (TYPE_FIELD (new_type, i), | |
4095 | xstrdup (TYPE_FIELD_STATIC_PHYSNAME (type, | |
4096 | i))); | |
4097 | break; | |
4098 | default: | |
4099 | internal_error (__FILE__, __LINE__, | |
4100 | _("Unexpected type field location kind: %d"), | |
4101 | TYPE_FIELD_LOC_KIND (type, i)); | |
ae5a43e0 DJ |
4102 | } |
4103 | } | |
4104 | } | |
4105 | ||
0963b4bd | 4106 | /* For range types, copy the bounds information. */ |
43bbcdc2 PH |
4107 | if (TYPE_CODE (type) == TYPE_CODE_RANGE) |
4108 | { | |
4109 | TYPE_RANGE_DATA (new_type) = xmalloc (sizeof (struct range_bounds)); | |
4110 | *TYPE_RANGE_DATA (new_type) = *TYPE_RANGE_DATA (type); | |
4111 | } | |
4112 | ||
ae5a43e0 DJ |
4113 | /* Copy pointers to other types. */ |
4114 | if (TYPE_TARGET_TYPE (type)) | |
7ba81444 MS |
4115 | TYPE_TARGET_TYPE (new_type) = |
4116 | copy_type_recursive (objfile, | |
4117 | TYPE_TARGET_TYPE (type), | |
4118 | copied_types); | |
ae5a43e0 | 4119 | if (TYPE_VPTR_BASETYPE (type)) |
7ba81444 MS |
4120 | TYPE_VPTR_BASETYPE (new_type) = |
4121 | copy_type_recursive (objfile, | |
4122 | TYPE_VPTR_BASETYPE (type), | |
4123 | copied_types); | |
ae5a43e0 DJ |
4124 | /* Maybe copy the type_specific bits. |
4125 | ||
4126 | NOTE drow/2005-12-09: We do not copy the C++-specific bits like | |
4127 | base classes and methods. There's no fundamental reason why we | |
4128 | can't, but at the moment it is not needed. */ | |
4129 | ||
4130 | if (TYPE_CODE (type) == TYPE_CODE_FLT) | |
d5d6fca5 | 4131 | TYPE_FLOATFORMAT (new_type) = TYPE_FLOATFORMAT (type); |
ae5a43e0 DJ |
4132 | else if (TYPE_CODE (type) == TYPE_CODE_STRUCT |
4133 | || TYPE_CODE (type) == TYPE_CODE_UNION | |
ae5a43e0 DJ |
4134 | || TYPE_CODE (type) == TYPE_CODE_NAMESPACE) |
4135 | INIT_CPLUS_SPECIFIC (new_type); | |
4136 | ||
4137 | return new_type; | |
4138 | } | |
4139 | ||
4af88198 JB |
4140 | /* Make a copy of the given TYPE, except that the pointer & reference |
4141 | types are not preserved. | |
4142 | ||
4143 | This function assumes that the given type has an associated objfile. | |
4144 | This objfile is used to allocate the new type. */ | |
4145 | ||
4146 | struct type * | |
4147 | copy_type (const struct type *type) | |
4148 | { | |
4149 | struct type *new_type; | |
4150 | ||
e9bb382b | 4151 | gdb_assert (TYPE_OBJFILE_OWNED (type)); |
4af88198 | 4152 | |
e9bb382b | 4153 | new_type = alloc_type_copy (type); |
4af88198 JB |
4154 | TYPE_INSTANCE_FLAGS (new_type) = TYPE_INSTANCE_FLAGS (type); |
4155 | TYPE_LENGTH (new_type) = TYPE_LENGTH (type); | |
4156 | memcpy (TYPE_MAIN_TYPE (new_type), TYPE_MAIN_TYPE (type), | |
4157 | sizeof (struct main_type)); | |
4158 | ||
4159 | return new_type; | |
4160 | } | |
5212577a | 4161 | \f |
e9bb382b UW |
4162 | /* Helper functions to initialize architecture-specific types. */ |
4163 | ||
4164 | /* Allocate a type structure associated with GDBARCH and set its | |
4165 | CODE, LENGTH, and NAME fields. */ | |
5212577a | 4166 | |
e9bb382b UW |
4167 | struct type * |
4168 | arch_type (struct gdbarch *gdbarch, | |
4169 | enum type_code code, int length, char *name) | |
4170 | { | |
4171 | struct type *type; | |
4172 | ||
4173 | type = alloc_type_arch (gdbarch); | |
4174 | TYPE_CODE (type) = code; | |
4175 | TYPE_LENGTH (type) = length; | |
4176 | ||
4177 | if (name) | |
4178 | TYPE_NAME (type) = xstrdup (name); | |
4179 | ||
4180 | return type; | |
4181 | } | |
4182 | ||
4183 | /* Allocate a TYPE_CODE_INT type structure associated with GDBARCH. | |
4184 | BIT is the type size in bits. If UNSIGNED_P is non-zero, set | |
4185 | the type's TYPE_UNSIGNED flag. NAME is the type name. */ | |
5212577a | 4186 | |
e9bb382b UW |
4187 | struct type * |
4188 | arch_integer_type (struct gdbarch *gdbarch, | |
4189 | int bit, int unsigned_p, char *name) | |
4190 | { | |
4191 | struct type *t; | |
4192 | ||
4193 | t = arch_type (gdbarch, TYPE_CODE_INT, bit / TARGET_CHAR_BIT, name); | |
4194 | if (unsigned_p) | |
4195 | TYPE_UNSIGNED (t) = 1; | |
4196 | if (name && strcmp (name, "char") == 0) | |
4197 | TYPE_NOSIGN (t) = 1; | |
4198 | ||
4199 | return t; | |
4200 | } | |
4201 | ||
4202 | /* Allocate a TYPE_CODE_CHAR type structure associated with GDBARCH. | |
4203 | BIT is the type size in bits. If UNSIGNED_P is non-zero, set | |
4204 | the type's TYPE_UNSIGNED flag. NAME is the type name. */ | |
5212577a | 4205 | |
e9bb382b UW |
4206 | struct type * |
4207 | arch_character_type (struct gdbarch *gdbarch, | |
4208 | int bit, int unsigned_p, char *name) | |
4209 | { | |
4210 | struct type *t; | |
4211 | ||
4212 | t = arch_type (gdbarch, TYPE_CODE_CHAR, bit / TARGET_CHAR_BIT, name); | |
4213 | if (unsigned_p) | |
4214 | TYPE_UNSIGNED (t) = 1; | |
4215 | ||
4216 | return t; | |
4217 | } | |
4218 | ||
4219 | /* Allocate a TYPE_CODE_BOOL type structure associated with GDBARCH. | |
4220 | BIT is the type size in bits. If UNSIGNED_P is non-zero, set | |
4221 | the type's TYPE_UNSIGNED flag. NAME is the type name. */ | |
5212577a | 4222 | |
e9bb382b UW |
4223 | struct type * |
4224 | arch_boolean_type (struct gdbarch *gdbarch, | |
4225 | int bit, int unsigned_p, char *name) | |
4226 | { | |
4227 | struct type *t; | |
4228 | ||
4229 | t = arch_type (gdbarch, TYPE_CODE_BOOL, bit / TARGET_CHAR_BIT, name); | |
4230 | if (unsigned_p) | |
4231 | TYPE_UNSIGNED (t) = 1; | |
4232 | ||
4233 | return t; | |
4234 | } | |
4235 | ||
4236 | /* Allocate a TYPE_CODE_FLT type structure associated with GDBARCH. | |
4237 | BIT is the type size in bits; if BIT equals -1, the size is | |
4238 | determined by the floatformat. NAME is the type name. Set the | |
4239 | TYPE_FLOATFORMAT from FLOATFORMATS. */ | |
5212577a | 4240 | |
27067745 | 4241 | struct type * |
e9bb382b UW |
4242 | arch_float_type (struct gdbarch *gdbarch, |
4243 | int bit, char *name, const struct floatformat **floatformats) | |
8da61cc4 DJ |
4244 | { |
4245 | struct type *t; | |
4246 | ||
4247 | if (bit == -1) | |
4248 | { | |
4249 | gdb_assert (floatformats != NULL); | |
4250 | gdb_assert (floatformats[0] != NULL && floatformats[1] != NULL); | |
4251 | bit = floatformats[0]->totalsize; | |
4252 | } | |
4253 | gdb_assert (bit >= 0); | |
4254 | ||
e9bb382b | 4255 | t = arch_type (gdbarch, TYPE_CODE_FLT, bit / TARGET_CHAR_BIT, name); |
8da61cc4 DJ |
4256 | TYPE_FLOATFORMAT (t) = floatformats; |
4257 | return t; | |
4258 | } | |
4259 | ||
e9bb382b UW |
4260 | /* Allocate a TYPE_CODE_COMPLEX type structure associated with GDBARCH. |
4261 | NAME is the type name. TARGET_TYPE is the component float type. */ | |
5212577a | 4262 | |
27067745 | 4263 | struct type * |
e9bb382b UW |
4264 | arch_complex_type (struct gdbarch *gdbarch, |
4265 | char *name, struct type *target_type) | |
27067745 UW |
4266 | { |
4267 | struct type *t; | |
d8734c88 | 4268 | |
e9bb382b UW |
4269 | t = arch_type (gdbarch, TYPE_CODE_COMPLEX, |
4270 | 2 * TYPE_LENGTH (target_type), name); | |
27067745 UW |
4271 | TYPE_TARGET_TYPE (t) = target_type; |
4272 | return t; | |
4273 | } | |
4274 | ||
e9bb382b | 4275 | /* Allocate a TYPE_CODE_FLAGS type structure associated with GDBARCH. |
eb90ce83 | 4276 | NAME is the type name. LENGTH is the size of the flag word in bytes. */ |
5212577a | 4277 | |
e9bb382b UW |
4278 | struct type * |
4279 | arch_flags_type (struct gdbarch *gdbarch, char *name, int length) | |
4280 | { | |
4281 | int nfields = length * TARGET_CHAR_BIT; | |
4282 | struct type *type; | |
4283 | ||
4284 | type = arch_type (gdbarch, TYPE_CODE_FLAGS, length, name); | |
4285 | TYPE_UNSIGNED (type) = 1; | |
4286 | TYPE_NFIELDS (type) = nfields; | |
4287 | TYPE_FIELDS (type) = TYPE_ZALLOC (type, nfields * sizeof (struct field)); | |
4288 | ||
4289 | return type; | |
4290 | } | |
4291 | ||
4292 | /* Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at | |
4293 | position BITPOS is called NAME. */ | |
5212577a | 4294 | |
e9bb382b UW |
4295 | void |
4296 | append_flags_type_flag (struct type *type, int bitpos, char *name) | |
4297 | { | |
4298 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_FLAGS); | |
4299 | gdb_assert (bitpos < TYPE_NFIELDS (type)); | |
4300 | gdb_assert (bitpos >= 0); | |
4301 | ||
4302 | if (name) | |
4303 | { | |
4304 | TYPE_FIELD_NAME (type, bitpos) = xstrdup (name); | |
945b3a32 | 4305 | SET_FIELD_BITPOS (TYPE_FIELD (type, bitpos), bitpos); |
e9bb382b UW |
4306 | } |
4307 | else | |
4308 | { | |
4309 | /* Don't show this field to the user. */ | |
945b3a32 | 4310 | SET_FIELD_BITPOS (TYPE_FIELD (type, bitpos), -1); |
e9bb382b UW |
4311 | } |
4312 | } | |
4313 | ||
4314 | /* Allocate a TYPE_CODE_STRUCT or TYPE_CODE_UNION type structure (as | |
4315 | specified by CODE) associated with GDBARCH. NAME is the type name. */ | |
5212577a | 4316 | |
e9bb382b UW |
4317 | struct type * |
4318 | arch_composite_type (struct gdbarch *gdbarch, char *name, enum type_code code) | |
4319 | { | |
4320 | struct type *t; | |
d8734c88 | 4321 | |
e9bb382b UW |
4322 | gdb_assert (code == TYPE_CODE_STRUCT || code == TYPE_CODE_UNION); |
4323 | t = arch_type (gdbarch, code, 0, NULL); | |
4324 | TYPE_TAG_NAME (t) = name; | |
4325 | INIT_CPLUS_SPECIFIC (t); | |
4326 | return t; | |
4327 | } | |
4328 | ||
4329 | /* Add new field with name NAME and type FIELD to composite type T. | |
f5dff777 DJ |
4330 | Do not set the field's position or adjust the type's length; |
4331 | the caller should do so. Return the new field. */ | |
5212577a | 4332 | |
f5dff777 DJ |
4333 | struct field * |
4334 | append_composite_type_field_raw (struct type *t, char *name, | |
4335 | struct type *field) | |
e9bb382b UW |
4336 | { |
4337 | struct field *f; | |
d8734c88 | 4338 | |
e9bb382b UW |
4339 | TYPE_NFIELDS (t) = TYPE_NFIELDS (t) + 1; |
4340 | TYPE_FIELDS (t) = xrealloc (TYPE_FIELDS (t), | |
4341 | sizeof (struct field) * TYPE_NFIELDS (t)); | |
4342 | f = &(TYPE_FIELDS (t)[TYPE_NFIELDS (t) - 1]); | |
4343 | memset (f, 0, sizeof f[0]); | |
4344 | FIELD_TYPE (f[0]) = field; | |
4345 | FIELD_NAME (f[0]) = name; | |
f5dff777 DJ |
4346 | return f; |
4347 | } | |
4348 | ||
4349 | /* Add new field with name NAME and type FIELD to composite type T. | |
4350 | ALIGNMENT (if non-zero) specifies the minimum field alignment. */ | |
5212577a | 4351 | |
f5dff777 DJ |
4352 | void |
4353 | append_composite_type_field_aligned (struct type *t, char *name, | |
4354 | struct type *field, int alignment) | |
4355 | { | |
4356 | struct field *f = append_composite_type_field_raw (t, name, field); | |
d8734c88 | 4357 | |
e9bb382b UW |
4358 | if (TYPE_CODE (t) == TYPE_CODE_UNION) |
4359 | { | |
4360 | if (TYPE_LENGTH (t) < TYPE_LENGTH (field)) | |
4361 | TYPE_LENGTH (t) = TYPE_LENGTH (field); | |
4362 | } | |
4363 | else if (TYPE_CODE (t) == TYPE_CODE_STRUCT) | |
4364 | { | |
4365 | TYPE_LENGTH (t) = TYPE_LENGTH (t) + TYPE_LENGTH (field); | |
4366 | if (TYPE_NFIELDS (t) > 1) | |
4367 | { | |
f41f5e61 PA |
4368 | SET_FIELD_BITPOS (f[0], |
4369 | (FIELD_BITPOS (f[-1]) | |
4370 | + (TYPE_LENGTH (FIELD_TYPE (f[-1])) | |
4371 | * TARGET_CHAR_BIT))); | |
e9bb382b UW |
4372 | |
4373 | if (alignment) | |
4374 | { | |
86c3c1fc AB |
4375 | int left; |
4376 | ||
4377 | alignment *= TARGET_CHAR_BIT; | |
4378 | left = FIELD_BITPOS (f[0]) % alignment; | |
d8734c88 | 4379 | |
e9bb382b UW |
4380 | if (left) |
4381 | { | |
f41f5e61 | 4382 | SET_FIELD_BITPOS (f[0], FIELD_BITPOS (f[0]) + (alignment - left)); |
86c3c1fc | 4383 | TYPE_LENGTH (t) += (alignment - left) / TARGET_CHAR_BIT; |
e9bb382b UW |
4384 | } |
4385 | } | |
4386 | } | |
4387 | } | |
4388 | } | |
4389 | ||
4390 | /* Add new field with name NAME and type FIELD to composite type T. */ | |
5212577a | 4391 | |
e9bb382b UW |
4392 | void |
4393 | append_composite_type_field (struct type *t, char *name, | |
4394 | struct type *field) | |
4395 | { | |
4396 | append_composite_type_field_aligned (t, name, field, 0); | |
4397 | } | |
4398 | ||
000177f0 AC |
4399 | static struct gdbarch_data *gdbtypes_data; |
4400 | ||
4401 | const struct builtin_type * | |
4402 | builtin_type (struct gdbarch *gdbarch) | |
4403 | { | |
4404 | return gdbarch_data (gdbarch, gdbtypes_data); | |
4405 | } | |
4406 | ||
4407 | static void * | |
4408 | gdbtypes_post_init (struct gdbarch *gdbarch) | |
4409 | { | |
4410 | struct builtin_type *builtin_type | |
4411 | = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct builtin_type); | |
4412 | ||
46bf5051 | 4413 | /* Basic types. */ |
e9bb382b UW |
4414 | builtin_type->builtin_void |
4415 | = arch_type (gdbarch, TYPE_CODE_VOID, 1, "void"); | |
4416 | builtin_type->builtin_char | |
4417 | = arch_integer_type (gdbarch, TARGET_CHAR_BIT, | |
4418 | !gdbarch_char_signed (gdbarch), "char"); | |
4419 | builtin_type->builtin_signed_char | |
4420 | = arch_integer_type (gdbarch, TARGET_CHAR_BIT, | |
4421 | 0, "signed char"); | |
4422 | builtin_type->builtin_unsigned_char | |
4423 | = arch_integer_type (gdbarch, TARGET_CHAR_BIT, | |
4424 | 1, "unsigned char"); | |
4425 | builtin_type->builtin_short | |
4426 | = arch_integer_type (gdbarch, gdbarch_short_bit (gdbarch), | |
4427 | 0, "short"); | |
4428 | builtin_type->builtin_unsigned_short | |
4429 | = arch_integer_type (gdbarch, gdbarch_short_bit (gdbarch), | |
4430 | 1, "unsigned short"); | |
4431 | builtin_type->builtin_int | |
4432 | = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch), | |
4433 | 0, "int"); | |
4434 | builtin_type->builtin_unsigned_int | |
4435 | = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch), | |
4436 | 1, "unsigned int"); | |
4437 | builtin_type->builtin_long | |
4438 | = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch), | |
4439 | 0, "long"); | |
4440 | builtin_type->builtin_unsigned_long | |
4441 | = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch), | |
4442 | 1, "unsigned long"); | |
4443 | builtin_type->builtin_long_long | |
4444 | = arch_integer_type (gdbarch, gdbarch_long_long_bit (gdbarch), | |
4445 | 0, "long long"); | |
4446 | builtin_type->builtin_unsigned_long_long | |
4447 | = arch_integer_type (gdbarch, gdbarch_long_long_bit (gdbarch), | |
4448 | 1, "unsigned long long"); | |
70bd8e24 | 4449 | builtin_type->builtin_float |
e9bb382b | 4450 | = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch), |
27067745 | 4451 | "float", gdbarch_float_format (gdbarch)); |
70bd8e24 | 4452 | builtin_type->builtin_double |
e9bb382b | 4453 | = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch), |
27067745 | 4454 | "double", gdbarch_double_format (gdbarch)); |
70bd8e24 | 4455 | builtin_type->builtin_long_double |
e9bb382b | 4456 | = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch), |
27067745 | 4457 | "long double", gdbarch_long_double_format (gdbarch)); |
70bd8e24 | 4458 | builtin_type->builtin_complex |
e9bb382b UW |
4459 | = arch_complex_type (gdbarch, "complex", |
4460 | builtin_type->builtin_float); | |
70bd8e24 | 4461 | builtin_type->builtin_double_complex |
e9bb382b UW |
4462 | = arch_complex_type (gdbarch, "double complex", |
4463 | builtin_type->builtin_double); | |
4464 | builtin_type->builtin_string | |
4465 | = arch_type (gdbarch, TYPE_CODE_STRING, 1, "string"); | |
4466 | builtin_type->builtin_bool | |
4467 | = arch_type (gdbarch, TYPE_CODE_BOOL, 1, "bool"); | |
000177f0 | 4468 | |
7678ef8f TJB |
4469 | /* The following three are about decimal floating point types, which |
4470 | are 32-bits, 64-bits and 128-bits respectively. */ | |
4471 | builtin_type->builtin_decfloat | |
e9bb382b | 4472 | = arch_type (gdbarch, TYPE_CODE_DECFLOAT, 32 / 8, "_Decimal32"); |
7678ef8f | 4473 | builtin_type->builtin_decdouble |
e9bb382b | 4474 | = arch_type (gdbarch, TYPE_CODE_DECFLOAT, 64 / 8, "_Decimal64"); |
7678ef8f | 4475 | builtin_type->builtin_declong |
e9bb382b | 4476 | = arch_type (gdbarch, TYPE_CODE_DECFLOAT, 128 / 8, "_Decimal128"); |
7678ef8f | 4477 | |
69feb676 | 4478 | /* "True" character types. */ |
e9bb382b UW |
4479 | builtin_type->builtin_true_char |
4480 | = arch_character_type (gdbarch, TARGET_CHAR_BIT, 0, "true character"); | |
4481 | builtin_type->builtin_true_unsigned_char | |
4482 | = arch_character_type (gdbarch, TARGET_CHAR_BIT, 1, "true character"); | |
69feb676 | 4483 | |
df4df182 | 4484 | /* Fixed-size integer types. */ |
e9bb382b UW |
4485 | builtin_type->builtin_int0 |
4486 | = arch_integer_type (gdbarch, 0, 0, "int0_t"); | |
4487 | builtin_type->builtin_int8 | |
4488 | = arch_integer_type (gdbarch, 8, 0, "int8_t"); | |
4489 | builtin_type->builtin_uint8 | |
4490 | = arch_integer_type (gdbarch, 8, 1, "uint8_t"); | |
4491 | builtin_type->builtin_int16 | |
4492 | = arch_integer_type (gdbarch, 16, 0, "int16_t"); | |
4493 | builtin_type->builtin_uint16 | |
4494 | = arch_integer_type (gdbarch, 16, 1, "uint16_t"); | |
4495 | builtin_type->builtin_int32 | |
4496 | = arch_integer_type (gdbarch, 32, 0, "int32_t"); | |
4497 | builtin_type->builtin_uint32 | |
4498 | = arch_integer_type (gdbarch, 32, 1, "uint32_t"); | |
4499 | builtin_type->builtin_int64 | |
4500 | = arch_integer_type (gdbarch, 64, 0, "int64_t"); | |
4501 | builtin_type->builtin_uint64 | |
4502 | = arch_integer_type (gdbarch, 64, 1, "uint64_t"); | |
4503 | builtin_type->builtin_int128 | |
4504 | = arch_integer_type (gdbarch, 128, 0, "int128_t"); | |
4505 | builtin_type->builtin_uint128 | |
4506 | = arch_integer_type (gdbarch, 128, 1, "uint128_t"); | |
2844d6b5 KW |
4507 | TYPE_INSTANCE_FLAGS (builtin_type->builtin_int8) |= |
4508 | TYPE_INSTANCE_FLAG_NOTTEXT; | |
4509 | TYPE_INSTANCE_FLAGS (builtin_type->builtin_uint8) |= | |
4510 | TYPE_INSTANCE_FLAG_NOTTEXT; | |
df4df182 | 4511 | |
9a22f0d0 PM |
4512 | /* Wide character types. */ |
4513 | builtin_type->builtin_char16 | |
4514 | = arch_integer_type (gdbarch, 16, 0, "char16_t"); | |
4515 | builtin_type->builtin_char32 | |
4516 | = arch_integer_type (gdbarch, 32, 0, "char32_t"); | |
4517 | ||
4518 | ||
46bf5051 | 4519 | /* Default data/code pointer types. */ |
e9bb382b UW |
4520 | builtin_type->builtin_data_ptr |
4521 | = lookup_pointer_type (builtin_type->builtin_void); | |
4522 | builtin_type->builtin_func_ptr | |
4523 | = lookup_pointer_type (lookup_function_type (builtin_type->builtin_void)); | |
0875794a JK |
4524 | builtin_type->builtin_func_func |
4525 | = lookup_function_type (builtin_type->builtin_func_ptr); | |
46bf5051 | 4526 | |
78267919 | 4527 | /* This type represents a GDB internal function. */ |
e9bb382b UW |
4528 | builtin_type->internal_fn |
4529 | = arch_type (gdbarch, TYPE_CODE_INTERNAL_FUNCTION, 0, | |
4530 | "<internal function>"); | |
78267919 | 4531 | |
e81e7f5e SC |
4532 | /* This type represents an xmethod. */ |
4533 | builtin_type->xmethod | |
4534 | = arch_type (gdbarch, TYPE_CODE_XMETHOD, 0, "<xmethod>"); | |
4535 | ||
46bf5051 UW |
4536 | return builtin_type; |
4537 | } | |
4538 | ||
46bf5051 UW |
4539 | /* This set of objfile-based types is intended to be used by symbol |
4540 | readers as basic types. */ | |
4541 | ||
4542 | static const struct objfile_data *objfile_type_data; | |
4543 | ||
4544 | const struct objfile_type * | |
4545 | objfile_type (struct objfile *objfile) | |
4546 | { | |
4547 | struct gdbarch *gdbarch; | |
4548 | struct objfile_type *objfile_type | |
4549 | = objfile_data (objfile, objfile_type_data); | |
4550 | ||
4551 | if (objfile_type) | |
4552 | return objfile_type; | |
4553 | ||
4554 | objfile_type = OBSTACK_CALLOC (&objfile->objfile_obstack, | |
4555 | 1, struct objfile_type); | |
4556 | ||
4557 | /* Use the objfile architecture to determine basic type properties. */ | |
4558 | gdbarch = get_objfile_arch (objfile); | |
4559 | ||
4560 | /* Basic types. */ | |
4561 | objfile_type->builtin_void | |
4562 | = init_type (TYPE_CODE_VOID, 1, | |
4563 | 0, | |
4564 | "void", objfile); | |
4565 | ||
4566 | objfile_type->builtin_char | |
4567 | = init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT, | |
4568 | (TYPE_FLAG_NOSIGN | |
4569 | | (gdbarch_char_signed (gdbarch) ? 0 : TYPE_FLAG_UNSIGNED)), | |
4570 | "char", objfile); | |
4571 | objfile_type->builtin_signed_char | |
4572 | = init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT, | |
4573 | 0, | |
4574 | "signed char", objfile); | |
4575 | objfile_type->builtin_unsigned_char | |
4576 | = init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT, | |
4577 | TYPE_FLAG_UNSIGNED, | |
4578 | "unsigned char", objfile); | |
4579 | objfile_type->builtin_short | |
4580 | = init_type (TYPE_CODE_INT, | |
4581 | gdbarch_short_bit (gdbarch) / TARGET_CHAR_BIT, | |
4582 | 0, "short", objfile); | |
4583 | objfile_type->builtin_unsigned_short | |
4584 | = init_type (TYPE_CODE_INT, | |
4585 | gdbarch_short_bit (gdbarch) / TARGET_CHAR_BIT, | |
4586 | TYPE_FLAG_UNSIGNED, "unsigned short", objfile); | |
4587 | objfile_type->builtin_int | |
4588 | = init_type (TYPE_CODE_INT, | |
4589 | gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT, | |
4590 | 0, "int", objfile); | |
4591 | objfile_type->builtin_unsigned_int | |
4592 | = init_type (TYPE_CODE_INT, | |
4593 | gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT, | |
4594 | TYPE_FLAG_UNSIGNED, "unsigned int", objfile); | |
4595 | objfile_type->builtin_long | |
4596 | = init_type (TYPE_CODE_INT, | |
4597 | gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT, | |
4598 | 0, "long", objfile); | |
4599 | objfile_type->builtin_unsigned_long | |
4600 | = init_type (TYPE_CODE_INT, | |
4601 | gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT, | |
4602 | TYPE_FLAG_UNSIGNED, "unsigned long", objfile); | |
4603 | objfile_type->builtin_long_long | |
4604 | = init_type (TYPE_CODE_INT, | |
4605 | gdbarch_long_long_bit (gdbarch) / TARGET_CHAR_BIT, | |
4606 | 0, "long long", objfile); | |
4607 | objfile_type->builtin_unsigned_long_long | |
4608 | = init_type (TYPE_CODE_INT, | |
4609 | gdbarch_long_long_bit (gdbarch) / TARGET_CHAR_BIT, | |
4610 | TYPE_FLAG_UNSIGNED, "unsigned long long", objfile); | |
4611 | ||
4612 | objfile_type->builtin_float | |
4613 | = init_type (TYPE_CODE_FLT, | |
4614 | gdbarch_float_bit (gdbarch) / TARGET_CHAR_BIT, | |
4615 | 0, "float", objfile); | |
4616 | TYPE_FLOATFORMAT (objfile_type->builtin_float) | |
4617 | = gdbarch_float_format (gdbarch); | |
4618 | objfile_type->builtin_double | |
4619 | = init_type (TYPE_CODE_FLT, | |
4620 | gdbarch_double_bit (gdbarch) / TARGET_CHAR_BIT, | |
4621 | 0, "double", objfile); | |
4622 | TYPE_FLOATFORMAT (objfile_type->builtin_double) | |
4623 | = gdbarch_double_format (gdbarch); | |
4624 | objfile_type->builtin_long_double | |
4625 | = init_type (TYPE_CODE_FLT, | |
4626 | gdbarch_long_double_bit (gdbarch) / TARGET_CHAR_BIT, | |
4627 | 0, "long double", objfile); | |
4628 | TYPE_FLOATFORMAT (objfile_type->builtin_long_double) | |
4629 | = gdbarch_long_double_format (gdbarch); | |
4630 | ||
4631 | /* This type represents a type that was unrecognized in symbol read-in. */ | |
4632 | objfile_type->builtin_error | |
4633 | = init_type (TYPE_CODE_ERROR, 0, 0, "<unknown type>", objfile); | |
4634 | ||
4635 | /* The following set of types is used for symbols with no | |
4636 | debug information. */ | |
4637 | objfile_type->nodebug_text_symbol | |
4638 | = init_type (TYPE_CODE_FUNC, 1, 0, | |
4639 | "<text variable, no debug info>", objfile); | |
4640 | TYPE_TARGET_TYPE (objfile_type->nodebug_text_symbol) | |
4641 | = objfile_type->builtin_int; | |
0875794a JK |
4642 | objfile_type->nodebug_text_gnu_ifunc_symbol |
4643 | = init_type (TYPE_CODE_FUNC, 1, TYPE_FLAG_GNU_IFUNC, | |
4644 | "<text gnu-indirect-function variable, no debug info>", | |
4645 | objfile); | |
4646 | TYPE_TARGET_TYPE (objfile_type->nodebug_text_gnu_ifunc_symbol) | |
4647 | = objfile_type->nodebug_text_symbol; | |
4648 | objfile_type->nodebug_got_plt_symbol | |
4649 | = init_type (TYPE_CODE_PTR, gdbarch_addr_bit (gdbarch) / 8, 0, | |
4650 | "<text from jump slot in .got.plt, no debug info>", | |
4651 | objfile); | |
4652 | TYPE_TARGET_TYPE (objfile_type->nodebug_got_plt_symbol) | |
4653 | = objfile_type->nodebug_text_symbol; | |
46bf5051 UW |
4654 | objfile_type->nodebug_data_symbol |
4655 | = init_type (TYPE_CODE_INT, | |
4656 | gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT, 0, | |
4657 | "<data variable, no debug info>", objfile); | |
4658 | objfile_type->nodebug_unknown_symbol | |
4659 | = init_type (TYPE_CODE_INT, 1, 0, | |
4660 | "<variable (not text or data), no debug info>", objfile); | |
4661 | objfile_type->nodebug_tls_symbol | |
4662 | = init_type (TYPE_CODE_INT, | |
4663 | gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT, 0, | |
4664 | "<thread local variable, no debug info>", objfile); | |
000177f0 AC |
4665 | |
4666 | /* NOTE: on some targets, addresses and pointers are not necessarily | |
0a7cfe2c | 4667 | the same. |
000177f0 AC |
4668 | |
4669 | The upshot is: | |
4670 | - gdb's `struct type' always describes the target's | |
4671 | representation. | |
4672 | - gdb's `struct value' objects should always hold values in | |
4673 | target form. | |
4674 | - gdb's CORE_ADDR values are addresses in the unified virtual | |
4675 | address space that the assembler and linker work with. Thus, | |
4676 | since target_read_memory takes a CORE_ADDR as an argument, it | |
4677 | can access any memory on the target, even if the processor has | |
4678 | separate code and data address spaces. | |
4679 | ||
46bf5051 UW |
4680 | In this context, objfile_type->builtin_core_addr is a bit odd: |
4681 | it's a target type for a value the target will never see. It's | |
4682 | only used to hold the values of (typeless) linker symbols, which | |
4683 | are indeed in the unified virtual address space. */ | |
000177f0 | 4684 | |
46bf5051 UW |
4685 | objfile_type->builtin_core_addr |
4686 | = init_type (TYPE_CODE_INT, | |
4687 | gdbarch_addr_bit (gdbarch) / 8, | |
4688 | TYPE_FLAG_UNSIGNED, "__CORE_ADDR", objfile); | |
64c50499 | 4689 | |
46bf5051 UW |
4690 | set_objfile_data (objfile, objfile_type_data, objfile_type); |
4691 | return objfile_type; | |
000177f0 AC |
4692 | } |
4693 | ||
5212577a | 4694 | extern initialize_file_ftype _initialize_gdbtypes; |
46bf5051 | 4695 | |
c906108c | 4696 | void |
fba45db2 | 4697 | _initialize_gdbtypes (void) |
c906108c | 4698 | { |
5674de60 | 4699 | gdbtypes_data = gdbarch_data_register_post_init (gdbtypes_post_init); |
46bf5051 | 4700 | objfile_type_data = register_objfile_data (); |
5674de60 | 4701 | |
ccce17b0 YQ |
4702 | add_setshow_zuinteger_cmd ("overload", no_class, &overload_debug, |
4703 | _("Set debugging of C++ overloading."), | |
4704 | _("Show debugging of C++ overloading."), | |
4705 | _("When enabled, ranking of the " | |
4706 | "functions is displayed."), | |
4707 | NULL, | |
4708 | show_overload_debug, | |
4709 | &setdebuglist, &showdebuglist); | |
5674de60 | 4710 | |
7ba81444 | 4711 | /* Add user knob for controlling resolution of opaque types. */ |
5674de60 | 4712 | add_setshow_boolean_cmd ("opaque-type-resolution", class_support, |
3e43a32a MS |
4713 | &opaque_type_resolution, |
4714 | _("Set resolution of opaque struct/class/union" | |
4715 | " types (if set before loading symbols)."), | |
4716 | _("Show resolution of opaque struct/class/union" | |
4717 | " types (if set before loading symbols)."), | |
4718 | NULL, NULL, | |
5674de60 UW |
4719 | show_opaque_type_resolution, |
4720 | &setlist, &showlist); | |
a451cb65 KS |
4721 | |
4722 | /* Add an option to permit non-strict type checking. */ | |
4723 | add_setshow_boolean_cmd ("type", class_support, | |
4724 | &strict_type_checking, | |
4725 | _("Set strict type checking."), | |
4726 | _("Show strict type checking."), | |
4727 | NULL, NULL, | |
4728 | show_strict_type_checking, | |
4729 | &setchecklist, &showchecklist); | |
c906108c | 4730 | } |