Commit | Line | Data |
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c906108c | 1 | /* Support routines for manipulating internal types for GDB. |
4f2aea11 | 2 | |
b811d2c2 | 3 | Copyright (C) 1992-2020 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" |
8de20a37 | 37 | #include "cp-support.h" |
ca092b61 | 38 | #include "bcache.h" |
82ca8957 | 39 | #include "dwarf2/loc.h" |
80180f79 | 40 | #include "gdbcore.h" |
1841ee5d | 41 | #include "floatformat.h" |
ef83a141 | 42 | #include <algorithm> |
ac3aafc7 | 43 | |
6403aeea SW |
44 | /* Initialize BADNESS constants. */ |
45 | ||
a9d5ef47 | 46 | const struct rank LENGTH_MISMATCH_BADNESS = {100,0}; |
6403aeea | 47 | |
a9d5ef47 SW |
48 | const struct rank TOO_FEW_PARAMS_BADNESS = {100,0}; |
49 | const struct rank INCOMPATIBLE_TYPE_BADNESS = {100,0}; | |
6403aeea | 50 | |
a9d5ef47 | 51 | const struct rank EXACT_MATCH_BADNESS = {0,0}; |
6403aeea | 52 | |
a9d5ef47 SW |
53 | const struct rank INTEGER_PROMOTION_BADNESS = {1,0}; |
54 | const struct rank FLOAT_PROMOTION_BADNESS = {1,0}; | |
55 | const struct rank BASE_PTR_CONVERSION_BADNESS = {1,0}; | |
e15c3eb4 | 56 | const struct rank CV_CONVERSION_BADNESS = {1, 0}; |
a9d5ef47 SW |
57 | const struct rank INTEGER_CONVERSION_BADNESS = {2,0}; |
58 | const struct rank FLOAT_CONVERSION_BADNESS = {2,0}; | |
59 | const struct rank INT_FLOAT_CONVERSION_BADNESS = {2,0}; | |
60 | const struct rank VOID_PTR_CONVERSION_BADNESS = {2,0}; | |
5b4f6e25 | 61 | const struct rank BOOL_CONVERSION_BADNESS = {3,0}; |
a9d5ef47 SW |
62 | const struct rank BASE_CONVERSION_BADNESS = {2,0}; |
63 | const struct rank REFERENCE_CONVERSION_BADNESS = {2,0}; | |
06acc08f | 64 | const struct rank REFERENCE_SEE_THROUGH_BADNESS = {0,1}; |
da096638 | 65 | const struct rank NULL_POINTER_CONVERSION_BADNESS = {2,0}; |
a9d5ef47 | 66 | const struct rank NS_POINTER_CONVERSION_BADNESS = {10,0}; |
a451cb65 | 67 | const struct rank NS_INTEGER_POINTER_CONVERSION_BADNESS = {3,0}; |
6403aeea | 68 | |
8da61cc4 | 69 | /* Floatformat pairs. */ |
f9e9243a UW |
70 | const struct floatformat *floatformats_ieee_half[BFD_ENDIAN_UNKNOWN] = { |
71 | &floatformat_ieee_half_big, | |
72 | &floatformat_ieee_half_little | |
73 | }; | |
8da61cc4 DJ |
74 | const struct floatformat *floatformats_ieee_single[BFD_ENDIAN_UNKNOWN] = { |
75 | &floatformat_ieee_single_big, | |
76 | &floatformat_ieee_single_little | |
77 | }; | |
78 | const struct floatformat *floatformats_ieee_double[BFD_ENDIAN_UNKNOWN] = { | |
79 | &floatformat_ieee_double_big, | |
80 | &floatformat_ieee_double_little | |
81 | }; | |
82 | const struct floatformat *floatformats_ieee_double_littlebyte_bigword[BFD_ENDIAN_UNKNOWN] = { | |
83 | &floatformat_ieee_double_big, | |
84 | &floatformat_ieee_double_littlebyte_bigword | |
85 | }; | |
86 | const struct floatformat *floatformats_i387_ext[BFD_ENDIAN_UNKNOWN] = { | |
87 | &floatformat_i387_ext, | |
88 | &floatformat_i387_ext | |
89 | }; | |
90 | const struct floatformat *floatformats_m68881_ext[BFD_ENDIAN_UNKNOWN] = { | |
91 | &floatformat_m68881_ext, | |
92 | &floatformat_m68881_ext | |
93 | }; | |
94 | const struct floatformat *floatformats_arm_ext[BFD_ENDIAN_UNKNOWN] = { | |
95 | &floatformat_arm_ext_big, | |
96 | &floatformat_arm_ext_littlebyte_bigword | |
97 | }; | |
98 | const struct floatformat *floatformats_ia64_spill[BFD_ENDIAN_UNKNOWN] = { | |
99 | &floatformat_ia64_spill_big, | |
100 | &floatformat_ia64_spill_little | |
101 | }; | |
102 | const struct floatformat *floatformats_ia64_quad[BFD_ENDIAN_UNKNOWN] = { | |
103 | &floatformat_ia64_quad_big, | |
104 | &floatformat_ia64_quad_little | |
105 | }; | |
106 | const struct floatformat *floatformats_vax_f[BFD_ENDIAN_UNKNOWN] = { | |
107 | &floatformat_vax_f, | |
108 | &floatformat_vax_f | |
109 | }; | |
110 | const struct floatformat *floatformats_vax_d[BFD_ENDIAN_UNKNOWN] = { | |
111 | &floatformat_vax_d, | |
112 | &floatformat_vax_d | |
113 | }; | |
b14d30e1 | 114 | const struct floatformat *floatformats_ibm_long_double[BFD_ENDIAN_UNKNOWN] = { |
f5aee5ee AM |
115 | &floatformat_ibm_long_double_big, |
116 | &floatformat_ibm_long_double_little | |
b14d30e1 | 117 | }; |
8da61cc4 | 118 | |
2873700e KS |
119 | /* Should opaque types be resolved? */ |
120 | ||
491144b5 | 121 | static bool opaque_type_resolution = true; |
2873700e | 122 | |
79bb1944 | 123 | /* See gdbtypes.h. */ |
2873700e KS |
124 | |
125 | unsigned int overload_debug = 0; | |
126 | ||
a451cb65 KS |
127 | /* A flag to enable strict type checking. */ |
128 | ||
491144b5 | 129 | static bool strict_type_checking = true; |
a451cb65 | 130 | |
2873700e | 131 | /* A function to show whether opaque types are resolved. */ |
5212577a | 132 | |
920d2a44 AC |
133 | static void |
134 | show_opaque_type_resolution (struct ui_file *file, int from_tty, | |
7ba81444 MS |
135 | struct cmd_list_element *c, |
136 | const char *value) | |
920d2a44 | 137 | { |
3e43a32a MS |
138 | fprintf_filtered (file, _("Resolution of opaque struct/class/union types " |
139 | "(if set before loading symbols) is %s.\n"), | |
920d2a44 AC |
140 | value); |
141 | } | |
142 | ||
2873700e | 143 | /* A function to show whether C++ overload debugging is enabled. */ |
5212577a | 144 | |
920d2a44 AC |
145 | static void |
146 | show_overload_debug (struct ui_file *file, int from_tty, | |
147 | struct cmd_list_element *c, const char *value) | |
148 | { | |
7ba81444 MS |
149 | fprintf_filtered (file, _("Debugging of C++ overloading is %s.\n"), |
150 | value); | |
920d2a44 | 151 | } |
c906108c | 152 | |
a451cb65 KS |
153 | /* A function to show the status of strict type checking. */ |
154 | ||
155 | static void | |
156 | show_strict_type_checking (struct ui_file *file, int from_tty, | |
157 | struct cmd_list_element *c, const char *value) | |
158 | { | |
159 | fprintf_filtered (file, _("Strict type checking is %s.\n"), value); | |
160 | } | |
161 | ||
5212577a | 162 | \f |
e9bb382b UW |
163 | /* Allocate a new OBJFILE-associated type structure and fill it |
164 | with some defaults. Space for the type structure is allocated | |
165 | on the objfile's objfile_obstack. */ | |
c906108c SS |
166 | |
167 | struct type * | |
fba45db2 | 168 | alloc_type (struct objfile *objfile) |
c906108c | 169 | { |
52f0bd74 | 170 | struct type *type; |
c906108c | 171 | |
e9bb382b UW |
172 | gdb_assert (objfile != NULL); |
173 | ||
7ba81444 | 174 | /* Alloc the structure and start off with all fields zeroed. */ |
e9bb382b UW |
175 | type = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct type); |
176 | TYPE_MAIN_TYPE (type) = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
177 | struct main_type); | |
178 | OBJSTAT (objfile, n_types++); | |
c906108c | 179 | |
e9bb382b UW |
180 | TYPE_OBJFILE_OWNED (type) = 1; |
181 | TYPE_OWNER (type).objfile = objfile; | |
c906108c | 182 | |
7ba81444 | 183 | /* Initialize the fields that might not be zero. */ |
c906108c SS |
184 | |
185 | TYPE_CODE (type) = TYPE_CODE_UNDEF; | |
2fdde8f8 | 186 | TYPE_CHAIN (type) = type; /* Chain back to itself. */ |
c906108c | 187 | |
c16abbde | 188 | return type; |
c906108c SS |
189 | } |
190 | ||
e9bb382b UW |
191 | /* Allocate a new GDBARCH-associated type structure and fill it |
192 | with some defaults. Space for the type structure is allocated | |
8f57eec2 | 193 | on the obstack associated with GDBARCH. */ |
e9bb382b UW |
194 | |
195 | struct type * | |
196 | alloc_type_arch (struct gdbarch *gdbarch) | |
197 | { | |
198 | struct type *type; | |
199 | ||
200 | gdb_assert (gdbarch != NULL); | |
201 | ||
202 | /* Alloc the structure and start off with all fields zeroed. */ | |
203 | ||
8f57eec2 PP |
204 | type = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct type); |
205 | TYPE_MAIN_TYPE (type) = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct main_type); | |
e9bb382b UW |
206 | |
207 | TYPE_OBJFILE_OWNED (type) = 0; | |
208 | TYPE_OWNER (type).gdbarch = gdbarch; | |
209 | ||
210 | /* Initialize the fields that might not be zero. */ | |
211 | ||
212 | TYPE_CODE (type) = TYPE_CODE_UNDEF; | |
e9bb382b UW |
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 | { | |
2fabdf33 AB |
237 | struct gdbarch *arch; |
238 | ||
e9bb382b | 239 | if (TYPE_OBJFILE_OWNED (type)) |
08feed99 | 240 | arch = TYPE_OWNER (type).objfile->arch (); |
e9bb382b | 241 | else |
2fabdf33 AB |
242 | arch = TYPE_OWNER (type).gdbarch; |
243 | ||
244 | /* The ARCH can be NULL if TYPE is associated with neither an objfile nor | |
245 | a gdbarch, however, this is very rare, and even then, in most cases | |
246 | that get_type_arch is called, we assume that a non-NULL value is | |
247 | returned. */ | |
248 | gdb_assert (arch != NULL); | |
249 | return arch; | |
e9bb382b UW |
250 | } |
251 | ||
99ad9427 YQ |
252 | /* See gdbtypes.h. */ |
253 | ||
254 | struct type * | |
255 | get_target_type (struct type *type) | |
256 | { | |
257 | if (type != NULL) | |
258 | { | |
259 | type = TYPE_TARGET_TYPE (type); | |
260 | if (type != NULL) | |
261 | type = check_typedef (type); | |
262 | } | |
263 | ||
264 | return type; | |
265 | } | |
266 | ||
2e056931 SM |
267 | /* See gdbtypes.h. */ |
268 | ||
269 | unsigned int | |
270 | type_length_units (struct type *type) | |
271 | { | |
272 | struct gdbarch *arch = get_type_arch (type); | |
273 | int unit_size = gdbarch_addressable_memory_unit_size (arch); | |
274 | ||
275 | return TYPE_LENGTH (type) / unit_size; | |
276 | } | |
277 | ||
2fdde8f8 DJ |
278 | /* Alloc a new type instance structure, fill it with some defaults, |
279 | and point it at OLDTYPE. Allocate the new type instance from the | |
280 | same place as OLDTYPE. */ | |
281 | ||
282 | static struct type * | |
283 | alloc_type_instance (struct type *oldtype) | |
284 | { | |
285 | struct type *type; | |
286 | ||
287 | /* Allocate the structure. */ | |
288 | ||
e9bb382b | 289 | if (! TYPE_OBJFILE_OWNED (oldtype)) |
2fabdf33 | 290 | type = GDBARCH_OBSTACK_ZALLOC (get_type_arch (oldtype), struct type); |
2fdde8f8 | 291 | else |
1deafd4e PA |
292 | type = OBSTACK_ZALLOC (&TYPE_OBJFILE (oldtype)->objfile_obstack, |
293 | struct type); | |
294 | ||
2fdde8f8 DJ |
295 | TYPE_MAIN_TYPE (type) = TYPE_MAIN_TYPE (oldtype); |
296 | ||
297 | TYPE_CHAIN (type) = type; /* Chain back to itself for now. */ | |
298 | ||
c16abbde | 299 | return type; |
2fdde8f8 DJ |
300 | } |
301 | ||
302 | /* Clear all remnants of the previous type at TYPE, in preparation for | |
e9bb382b | 303 | replacing it with something else. Preserve owner information. */ |
5212577a | 304 | |
2fdde8f8 DJ |
305 | static void |
306 | smash_type (struct type *type) | |
307 | { | |
e9bb382b UW |
308 | int objfile_owned = TYPE_OBJFILE_OWNED (type); |
309 | union type_owner owner = TYPE_OWNER (type); | |
310 | ||
2fdde8f8 DJ |
311 | memset (TYPE_MAIN_TYPE (type), 0, sizeof (struct main_type)); |
312 | ||
e9bb382b UW |
313 | /* Restore owner information. */ |
314 | TYPE_OBJFILE_OWNED (type) = objfile_owned; | |
315 | TYPE_OWNER (type) = owner; | |
316 | ||
2fdde8f8 DJ |
317 | /* For now, delete the rings. */ |
318 | TYPE_CHAIN (type) = type; | |
319 | ||
320 | /* For now, leave the pointer/reference types alone. */ | |
321 | } | |
322 | ||
c906108c SS |
323 | /* Lookup a pointer to a type TYPE. TYPEPTR, if nonzero, points |
324 | to a pointer to memory where the pointer type should be stored. | |
325 | If *TYPEPTR is zero, update it to point to the pointer type we return. | |
326 | We allocate new memory if needed. */ | |
327 | ||
328 | struct type * | |
fba45db2 | 329 | make_pointer_type (struct type *type, struct type **typeptr) |
c906108c | 330 | { |
52f0bd74 | 331 | struct type *ntype; /* New type */ |
053cb41b | 332 | struct type *chain; |
c906108c SS |
333 | |
334 | ntype = TYPE_POINTER_TYPE (type); | |
335 | ||
c5aa993b | 336 | if (ntype) |
c906108c | 337 | { |
c5aa993b | 338 | if (typeptr == 0) |
7ba81444 MS |
339 | return ntype; /* Don't care about alloc, |
340 | and have new type. */ | |
c906108c | 341 | else if (*typeptr == 0) |
c5aa993b | 342 | { |
7ba81444 | 343 | *typeptr = ntype; /* Tracking alloc, and have new type. */ |
c906108c | 344 | return ntype; |
c5aa993b | 345 | } |
c906108c SS |
346 | } |
347 | ||
348 | if (typeptr == 0 || *typeptr == 0) /* We'll need to allocate one. */ | |
349 | { | |
e9bb382b | 350 | ntype = alloc_type_copy (type); |
c906108c SS |
351 | if (typeptr) |
352 | *typeptr = ntype; | |
353 | } | |
7ba81444 | 354 | else /* We have storage, but need to reset it. */ |
c906108c SS |
355 | { |
356 | ntype = *typeptr; | |
053cb41b | 357 | chain = TYPE_CHAIN (ntype); |
2fdde8f8 | 358 | smash_type (ntype); |
053cb41b | 359 | TYPE_CHAIN (ntype) = chain; |
c906108c SS |
360 | } |
361 | ||
362 | TYPE_TARGET_TYPE (ntype) = type; | |
363 | TYPE_POINTER_TYPE (type) = ntype; | |
364 | ||
5212577a | 365 | /* FIXME! Assumes the machine has only one representation for pointers! */ |
c906108c | 366 | |
50810684 UW |
367 | TYPE_LENGTH (ntype) |
368 | = gdbarch_ptr_bit (get_type_arch (type)) / TARGET_CHAR_BIT; | |
c906108c SS |
369 | TYPE_CODE (ntype) = TYPE_CODE_PTR; |
370 | ||
67b2adb2 | 371 | /* Mark pointers as unsigned. The target converts between pointers |
76e71323 | 372 | and addresses (CORE_ADDRs) using gdbarch_pointer_to_address and |
7ba81444 | 373 | gdbarch_address_to_pointer. */ |
876cecd0 | 374 | TYPE_UNSIGNED (ntype) = 1; |
c5aa993b | 375 | |
053cb41b JB |
376 | /* Update the length of all the other variants of this type. */ |
377 | chain = TYPE_CHAIN (ntype); | |
378 | while (chain != ntype) | |
379 | { | |
380 | TYPE_LENGTH (chain) = TYPE_LENGTH (ntype); | |
381 | chain = TYPE_CHAIN (chain); | |
382 | } | |
383 | ||
c906108c SS |
384 | return ntype; |
385 | } | |
386 | ||
387 | /* Given a type TYPE, return a type of pointers to that type. | |
388 | May need to construct such a type if this is the first use. */ | |
389 | ||
390 | struct type * | |
fba45db2 | 391 | lookup_pointer_type (struct type *type) |
c906108c | 392 | { |
c5aa993b | 393 | return make_pointer_type (type, (struct type **) 0); |
c906108c SS |
394 | } |
395 | ||
7ba81444 MS |
396 | /* Lookup a C++ `reference' to a type TYPE. TYPEPTR, if nonzero, |
397 | points to a pointer to memory where the reference type should be | |
398 | stored. If *TYPEPTR is zero, update it to point to the reference | |
3b224330 AV |
399 | type we return. We allocate new memory if needed. REFCODE denotes |
400 | the kind of reference type to lookup (lvalue or rvalue reference). */ | |
c906108c SS |
401 | |
402 | struct type * | |
3b224330 AV |
403 | make_reference_type (struct type *type, struct type **typeptr, |
404 | enum type_code refcode) | |
c906108c | 405 | { |
52f0bd74 | 406 | struct type *ntype; /* New type */ |
3b224330 | 407 | struct type **reftype; |
1e98b326 | 408 | struct type *chain; |
c906108c | 409 | |
3b224330 AV |
410 | gdb_assert (refcode == TYPE_CODE_REF || refcode == TYPE_CODE_RVALUE_REF); |
411 | ||
412 | ntype = (refcode == TYPE_CODE_REF ? TYPE_REFERENCE_TYPE (type) | |
413 | : TYPE_RVALUE_REFERENCE_TYPE (type)); | |
c906108c | 414 | |
c5aa993b | 415 | if (ntype) |
c906108c | 416 | { |
c5aa993b | 417 | if (typeptr == 0) |
7ba81444 MS |
418 | return ntype; /* Don't care about alloc, |
419 | and have new type. */ | |
c906108c | 420 | else if (*typeptr == 0) |
c5aa993b | 421 | { |
7ba81444 | 422 | *typeptr = ntype; /* Tracking alloc, and have new type. */ |
c906108c | 423 | return ntype; |
c5aa993b | 424 | } |
c906108c SS |
425 | } |
426 | ||
427 | if (typeptr == 0 || *typeptr == 0) /* We'll need to allocate one. */ | |
428 | { | |
e9bb382b | 429 | ntype = alloc_type_copy (type); |
c906108c SS |
430 | if (typeptr) |
431 | *typeptr = ntype; | |
432 | } | |
7ba81444 | 433 | else /* We have storage, but need to reset it. */ |
c906108c SS |
434 | { |
435 | ntype = *typeptr; | |
1e98b326 | 436 | chain = TYPE_CHAIN (ntype); |
2fdde8f8 | 437 | smash_type (ntype); |
1e98b326 | 438 | TYPE_CHAIN (ntype) = chain; |
c906108c SS |
439 | } |
440 | ||
441 | TYPE_TARGET_TYPE (ntype) = type; | |
3b224330 AV |
442 | reftype = (refcode == TYPE_CODE_REF ? &TYPE_REFERENCE_TYPE (type) |
443 | : &TYPE_RVALUE_REFERENCE_TYPE (type)); | |
444 | ||
445 | *reftype = ntype; | |
c906108c | 446 | |
7ba81444 MS |
447 | /* FIXME! Assume the machine has only one representation for |
448 | references, and that it matches the (only) representation for | |
449 | pointers! */ | |
c906108c | 450 | |
50810684 UW |
451 | TYPE_LENGTH (ntype) = |
452 | gdbarch_ptr_bit (get_type_arch (type)) / TARGET_CHAR_BIT; | |
3b224330 | 453 | TYPE_CODE (ntype) = refcode; |
c5aa993b | 454 | |
3b224330 | 455 | *reftype = ntype; |
c906108c | 456 | |
1e98b326 JB |
457 | /* Update the length of all the other variants of this type. */ |
458 | chain = TYPE_CHAIN (ntype); | |
459 | while (chain != ntype) | |
460 | { | |
461 | TYPE_LENGTH (chain) = TYPE_LENGTH (ntype); | |
462 | chain = TYPE_CHAIN (chain); | |
463 | } | |
464 | ||
c906108c SS |
465 | return ntype; |
466 | } | |
467 | ||
7ba81444 MS |
468 | /* Same as above, but caller doesn't care about memory allocation |
469 | details. */ | |
c906108c SS |
470 | |
471 | struct type * | |
3b224330 AV |
472 | lookup_reference_type (struct type *type, enum type_code refcode) |
473 | { | |
474 | return make_reference_type (type, (struct type **) 0, refcode); | |
475 | } | |
476 | ||
477 | /* Lookup the lvalue reference type for the type TYPE. */ | |
478 | ||
479 | struct type * | |
480 | lookup_lvalue_reference_type (struct type *type) | |
481 | { | |
482 | return lookup_reference_type (type, TYPE_CODE_REF); | |
483 | } | |
484 | ||
485 | /* Lookup the rvalue reference type for the type TYPE. */ | |
486 | ||
487 | struct type * | |
488 | lookup_rvalue_reference_type (struct type *type) | |
c906108c | 489 | { |
3b224330 | 490 | return lookup_reference_type (type, TYPE_CODE_RVALUE_REF); |
c906108c SS |
491 | } |
492 | ||
7ba81444 MS |
493 | /* Lookup a function type that returns type TYPE. TYPEPTR, if |
494 | nonzero, points to a pointer to memory where the function type | |
495 | should be stored. If *TYPEPTR is zero, update it to point to the | |
0c8b41f1 | 496 | function type we return. We allocate new memory if needed. */ |
c906108c SS |
497 | |
498 | struct type * | |
0c8b41f1 | 499 | make_function_type (struct type *type, struct type **typeptr) |
c906108c | 500 | { |
52f0bd74 | 501 | struct type *ntype; /* New type */ |
c906108c SS |
502 | |
503 | if (typeptr == 0 || *typeptr == 0) /* We'll need to allocate one. */ | |
504 | { | |
e9bb382b | 505 | ntype = alloc_type_copy (type); |
c906108c SS |
506 | if (typeptr) |
507 | *typeptr = ntype; | |
508 | } | |
7ba81444 | 509 | else /* We have storage, but need to reset it. */ |
c906108c SS |
510 | { |
511 | ntype = *typeptr; | |
2fdde8f8 | 512 | smash_type (ntype); |
c906108c SS |
513 | } |
514 | ||
515 | TYPE_TARGET_TYPE (ntype) = type; | |
516 | ||
517 | TYPE_LENGTH (ntype) = 1; | |
518 | TYPE_CODE (ntype) = TYPE_CODE_FUNC; | |
c5aa993b | 519 | |
b6cdc2c1 JK |
520 | INIT_FUNC_SPECIFIC (ntype); |
521 | ||
c906108c SS |
522 | return ntype; |
523 | } | |
524 | ||
c906108c SS |
525 | /* Given a type TYPE, return a type of functions that return that type. |
526 | May need to construct such a type if this is the first use. */ | |
527 | ||
528 | struct type * | |
fba45db2 | 529 | lookup_function_type (struct type *type) |
c906108c | 530 | { |
0c8b41f1 | 531 | return make_function_type (type, (struct type **) 0); |
c906108c SS |
532 | } |
533 | ||
71918a86 | 534 | /* Given a type TYPE and argument types, return the appropriate |
a6fb9c08 TT |
535 | function type. If the final type in PARAM_TYPES is NULL, make a |
536 | varargs function. */ | |
71918a86 TT |
537 | |
538 | struct type * | |
539 | lookup_function_type_with_arguments (struct type *type, | |
540 | int nparams, | |
541 | struct type **param_types) | |
542 | { | |
543 | struct type *fn = make_function_type (type, (struct type **) 0); | |
544 | int i; | |
545 | ||
e314d629 | 546 | if (nparams > 0) |
a6fb9c08 | 547 | { |
e314d629 TT |
548 | if (param_types[nparams - 1] == NULL) |
549 | { | |
550 | --nparams; | |
551 | TYPE_VARARGS (fn) = 1; | |
552 | } | |
553 | else if (TYPE_CODE (check_typedef (param_types[nparams - 1])) | |
554 | == TYPE_CODE_VOID) | |
555 | { | |
556 | --nparams; | |
557 | /* Caller should have ensured this. */ | |
558 | gdb_assert (nparams == 0); | |
559 | TYPE_PROTOTYPED (fn) = 1; | |
560 | } | |
54990598 PA |
561 | else |
562 | TYPE_PROTOTYPED (fn) = 1; | |
a6fb9c08 TT |
563 | } |
564 | ||
71918a86 | 565 | TYPE_NFIELDS (fn) = nparams; |
224c3ddb SM |
566 | TYPE_FIELDS (fn) |
567 | = (struct field *) TYPE_ZALLOC (fn, nparams * sizeof (struct field)); | |
71918a86 TT |
568 | for (i = 0; i < nparams; ++i) |
569 | TYPE_FIELD_TYPE (fn, i) = param_types[i]; | |
570 | ||
571 | return fn; | |
572 | } | |
573 | ||
47663de5 MS |
574 | /* Identify address space identifier by name -- |
575 | return the integer flag defined in gdbtypes.h. */ | |
5212577a DE |
576 | |
577 | int | |
61f4b350 TT |
578 | address_space_name_to_int (struct gdbarch *gdbarch, |
579 | const char *space_identifier) | |
47663de5 | 580 | { |
8b2dbe47 | 581 | int type_flags; |
d8734c88 | 582 | |
7ba81444 | 583 | /* Check for known address space delimiters. */ |
47663de5 | 584 | if (!strcmp (space_identifier, "code")) |
876cecd0 | 585 | return TYPE_INSTANCE_FLAG_CODE_SPACE; |
47663de5 | 586 | else if (!strcmp (space_identifier, "data")) |
876cecd0 | 587 | return TYPE_INSTANCE_FLAG_DATA_SPACE; |
5f11f355 AC |
588 | else if (gdbarch_address_class_name_to_type_flags_p (gdbarch) |
589 | && gdbarch_address_class_name_to_type_flags (gdbarch, | |
590 | space_identifier, | |
591 | &type_flags)) | |
8b2dbe47 | 592 | return type_flags; |
47663de5 | 593 | else |
8a3fe4f8 | 594 | error (_("Unknown address space specifier: \"%s\""), space_identifier); |
47663de5 MS |
595 | } |
596 | ||
597 | /* Identify address space identifier by integer flag as defined in | |
7ba81444 | 598 | gdbtypes.h -- return the string version of the adress space name. */ |
47663de5 | 599 | |
321432c0 | 600 | const char * |
50810684 | 601 | address_space_int_to_name (struct gdbarch *gdbarch, int space_flag) |
47663de5 | 602 | { |
876cecd0 | 603 | if (space_flag & TYPE_INSTANCE_FLAG_CODE_SPACE) |
47663de5 | 604 | return "code"; |
876cecd0 | 605 | else if (space_flag & TYPE_INSTANCE_FLAG_DATA_SPACE) |
47663de5 | 606 | return "data"; |
876cecd0 | 607 | else if ((space_flag & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
5f11f355 AC |
608 | && gdbarch_address_class_type_flags_to_name_p (gdbarch)) |
609 | return gdbarch_address_class_type_flags_to_name (gdbarch, space_flag); | |
47663de5 MS |
610 | else |
611 | return NULL; | |
612 | } | |
613 | ||
2fdde8f8 | 614 | /* Create a new type with instance flags NEW_FLAGS, based on TYPE. |
ad766c0a JB |
615 | |
616 | If STORAGE is non-NULL, create the new type instance there. | |
617 | STORAGE must be in the same obstack as TYPE. */ | |
47663de5 | 618 | |
b9362cc7 | 619 | static struct type * |
2fdde8f8 DJ |
620 | make_qualified_type (struct type *type, int new_flags, |
621 | struct type *storage) | |
47663de5 MS |
622 | { |
623 | struct type *ntype; | |
624 | ||
625 | ntype = type; | |
5f61c20e JK |
626 | do |
627 | { | |
628 | if (TYPE_INSTANCE_FLAGS (ntype) == new_flags) | |
629 | return ntype; | |
630 | ntype = TYPE_CHAIN (ntype); | |
631 | } | |
632 | while (ntype != type); | |
47663de5 | 633 | |
2fdde8f8 DJ |
634 | /* Create a new type instance. */ |
635 | if (storage == NULL) | |
636 | ntype = alloc_type_instance (type); | |
637 | else | |
638 | { | |
7ba81444 MS |
639 | /* If STORAGE was provided, it had better be in the same objfile |
640 | as TYPE. Otherwise, we can't link it into TYPE's cv chain: | |
641 | if one objfile is freed and the other kept, we'd have | |
642 | dangling pointers. */ | |
ad766c0a JB |
643 | gdb_assert (TYPE_OBJFILE (type) == TYPE_OBJFILE (storage)); |
644 | ||
2fdde8f8 DJ |
645 | ntype = storage; |
646 | TYPE_MAIN_TYPE (ntype) = TYPE_MAIN_TYPE (type); | |
647 | TYPE_CHAIN (ntype) = ntype; | |
648 | } | |
47663de5 MS |
649 | |
650 | /* Pointers or references to the original type are not relevant to | |
2fdde8f8 | 651 | the new type. */ |
47663de5 MS |
652 | TYPE_POINTER_TYPE (ntype) = (struct type *) 0; |
653 | TYPE_REFERENCE_TYPE (ntype) = (struct type *) 0; | |
47663de5 | 654 | |
2fdde8f8 DJ |
655 | /* Chain the new qualified type to the old type. */ |
656 | TYPE_CHAIN (ntype) = TYPE_CHAIN (type); | |
657 | TYPE_CHAIN (type) = ntype; | |
658 | ||
659 | /* Now set the instance flags and return the new type. */ | |
660 | TYPE_INSTANCE_FLAGS (ntype) = new_flags; | |
47663de5 | 661 | |
ab5d3da6 KB |
662 | /* Set length of new type to that of the original type. */ |
663 | TYPE_LENGTH (ntype) = TYPE_LENGTH (type); | |
664 | ||
47663de5 MS |
665 | return ntype; |
666 | } | |
667 | ||
2fdde8f8 DJ |
668 | /* Make an address-space-delimited variant of a type -- a type that |
669 | is identical to the one supplied except that it has an address | |
670 | space attribute attached to it (such as "code" or "data"). | |
671 | ||
7ba81444 MS |
672 | The space attributes "code" and "data" are for Harvard |
673 | architectures. The address space attributes are for architectures | |
674 | which have alternately sized pointers or pointers with alternate | |
675 | representations. */ | |
2fdde8f8 DJ |
676 | |
677 | struct type * | |
678 | make_type_with_address_space (struct type *type, int space_flag) | |
679 | { | |
2fdde8f8 | 680 | int new_flags = ((TYPE_INSTANCE_FLAGS (type) |
876cecd0 TT |
681 | & ~(TYPE_INSTANCE_FLAG_CODE_SPACE |
682 | | TYPE_INSTANCE_FLAG_DATA_SPACE | |
683 | | TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL)) | |
2fdde8f8 DJ |
684 | | space_flag); |
685 | ||
686 | return make_qualified_type (type, new_flags, NULL); | |
687 | } | |
c906108c SS |
688 | |
689 | /* Make a "c-v" variant of a type -- a type that is identical to the | |
690 | one supplied except that it may have const or volatile attributes | |
691 | CNST is a flag for setting the const attribute | |
692 | VOLTL is a flag for setting the volatile attribute | |
693 | TYPE is the base type whose variant we are creating. | |
c906108c | 694 | |
ad766c0a JB |
695 | If TYPEPTR and *TYPEPTR are non-zero, then *TYPEPTR points to |
696 | storage to hold the new qualified type; *TYPEPTR and TYPE must be | |
697 | in the same objfile. Otherwise, allocate fresh memory for the new | |
698 | type whereever TYPE lives. If TYPEPTR is non-zero, set it to the | |
699 | new type we construct. */ | |
5212577a | 700 | |
c906108c | 701 | struct type * |
7ba81444 MS |
702 | make_cv_type (int cnst, int voltl, |
703 | struct type *type, | |
704 | struct type **typeptr) | |
c906108c | 705 | { |
52f0bd74 | 706 | struct type *ntype; /* New type */ |
c906108c | 707 | |
2fdde8f8 | 708 | int new_flags = (TYPE_INSTANCE_FLAGS (type) |
308d96ed MS |
709 | & ~(TYPE_INSTANCE_FLAG_CONST |
710 | | TYPE_INSTANCE_FLAG_VOLATILE)); | |
c906108c | 711 | |
c906108c | 712 | if (cnst) |
876cecd0 | 713 | new_flags |= TYPE_INSTANCE_FLAG_CONST; |
c906108c SS |
714 | |
715 | if (voltl) | |
876cecd0 | 716 | new_flags |= TYPE_INSTANCE_FLAG_VOLATILE; |
a02fd225 | 717 | |
2fdde8f8 | 718 | if (typeptr && *typeptr != NULL) |
a02fd225 | 719 | { |
ad766c0a JB |
720 | /* TYPE and *TYPEPTR must be in the same objfile. We can't have |
721 | a C-V variant chain that threads across objfiles: if one | |
722 | objfile gets freed, then the other has a broken C-V chain. | |
723 | ||
724 | This code used to try to copy over the main type from TYPE to | |
725 | *TYPEPTR if they were in different objfiles, but that's | |
726 | wrong, too: TYPE may have a field list or member function | |
727 | lists, which refer to types of their own, etc. etc. The | |
728 | whole shebang would need to be copied over recursively; you | |
729 | can't have inter-objfile pointers. The only thing to do is | |
730 | to leave stub types as stub types, and look them up afresh by | |
731 | name each time you encounter them. */ | |
732 | gdb_assert (TYPE_OBJFILE (*typeptr) == TYPE_OBJFILE (type)); | |
2fdde8f8 DJ |
733 | } |
734 | ||
7ba81444 MS |
735 | ntype = make_qualified_type (type, new_flags, |
736 | typeptr ? *typeptr : NULL); | |
c906108c | 737 | |
2fdde8f8 DJ |
738 | if (typeptr != NULL) |
739 | *typeptr = ntype; | |
a02fd225 | 740 | |
2fdde8f8 | 741 | return ntype; |
a02fd225 | 742 | } |
c906108c | 743 | |
06d66ee9 TT |
744 | /* Make a 'restrict'-qualified version of TYPE. */ |
745 | ||
746 | struct type * | |
747 | make_restrict_type (struct type *type) | |
748 | { | |
749 | return make_qualified_type (type, | |
750 | (TYPE_INSTANCE_FLAGS (type) | |
751 | | TYPE_INSTANCE_FLAG_RESTRICT), | |
752 | NULL); | |
753 | } | |
754 | ||
f1660027 TT |
755 | /* Make a type without const, volatile, or restrict. */ |
756 | ||
757 | struct type * | |
758 | make_unqualified_type (struct type *type) | |
759 | { | |
760 | return make_qualified_type (type, | |
761 | (TYPE_INSTANCE_FLAGS (type) | |
762 | & ~(TYPE_INSTANCE_FLAG_CONST | |
763 | | TYPE_INSTANCE_FLAG_VOLATILE | |
764 | | TYPE_INSTANCE_FLAG_RESTRICT)), | |
765 | NULL); | |
766 | } | |
767 | ||
a2c2acaf MW |
768 | /* Make a '_Atomic'-qualified version of TYPE. */ |
769 | ||
770 | struct type * | |
771 | make_atomic_type (struct type *type) | |
772 | { | |
773 | return make_qualified_type (type, | |
774 | (TYPE_INSTANCE_FLAGS (type) | |
775 | | TYPE_INSTANCE_FLAG_ATOMIC), | |
776 | NULL); | |
777 | } | |
778 | ||
2fdde8f8 DJ |
779 | /* Replace the contents of ntype with the type *type. This changes the |
780 | contents, rather than the pointer for TYPE_MAIN_TYPE (ntype); thus | |
781 | the changes are propogated to all types in the TYPE_CHAIN. | |
dd6bda65 | 782 | |
cda6c68a JB |
783 | In order to build recursive types, it's inevitable that we'll need |
784 | to update types in place --- but this sort of indiscriminate | |
785 | smashing is ugly, and needs to be replaced with something more | |
2fdde8f8 DJ |
786 | controlled. TYPE_MAIN_TYPE is a step in this direction; it's not |
787 | clear if more steps are needed. */ | |
5212577a | 788 | |
dd6bda65 DJ |
789 | void |
790 | replace_type (struct type *ntype, struct type *type) | |
791 | { | |
ab5d3da6 | 792 | struct type *chain; |
dd6bda65 | 793 | |
ad766c0a JB |
794 | /* These two types had better be in the same objfile. Otherwise, |
795 | the assignment of one type's main type structure to the other | |
796 | will produce a type with references to objects (names; field | |
797 | lists; etc.) allocated on an objfile other than its own. */ | |
e46dd0f4 | 798 | gdb_assert (TYPE_OBJFILE (ntype) == TYPE_OBJFILE (type)); |
ad766c0a | 799 | |
2fdde8f8 | 800 | *TYPE_MAIN_TYPE (ntype) = *TYPE_MAIN_TYPE (type); |
dd6bda65 | 801 | |
7ba81444 MS |
802 | /* The type length is not a part of the main type. Update it for |
803 | each type on the variant chain. */ | |
ab5d3da6 | 804 | chain = ntype; |
5f61c20e JK |
805 | do |
806 | { | |
807 | /* Assert that this element of the chain has no address-class bits | |
808 | set in its flags. Such type variants might have type lengths | |
809 | which are supposed to be different from the non-address-class | |
810 | variants. This assertion shouldn't ever be triggered because | |
811 | symbol readers which do construct address-class variants don't | |
812 | call replace_type(). */ | |
813 | gdb_assert (TYPE_ADDRESS_CLASS_ALL (chain) == 0); | |
814 | ||
815 | TYPE_LENGTH (chain) = TYPE_LENGTH (type); | |
816 | chain = TYPE_CHAIN (chain); | |
817 | } | |
818 | while (ntype != chain); | |
ab5d3da6 | 819 | |
2fdde8f8 DJ |
820 | /* Assert that the two types have equivalent instance qualifiers. |
821 | This should be true for at least all of our debug readers. */ | |
822 | gdb_assert (TYPE_INSTANCE_FLAGS (ntype) == TYPE_INSTANCE_FLAGS (type)); | |
dd6bda65 DJ |
823 | } |
824 | ||
c906108c SS |
825 | /* Implement direct support for MEMBER_TYPE in GNU C++. |
826 | May need to construct such a type if this is the first use. | |
827 | The TYPE is the type of the member. The DOMAIN is the type | |
828 | of the aggregate that the member belongs to. */ | |
829 | ||
830 | struct type * | |
0d5de010 | 831 | lookup_memberptr_type (struct type *type, struct type *domain) |
c906108c | 832 | { |
52f0bd74 | 833 | struct type *mtype; |
c906108c | 834 | |
e9bb382b | 835 | mtype = alloc_type_copy (type); |
0d5de010 | 836 | smash_to_memberptr_type (mtype, domain, type); |
c16abbde | 837 | return mtype; |
c906108c SS |
838 | } |
839 | ||
0d5de010 DJ |
840 | /* Return a pointer-to-method type, for a method of type TO_TYPE. */ |
841 | ||
842 | struct type * | |
843 | lookup_methodptr_type (struct type *to_type) | |
844 | { | |
845 | struct type *mtype; | |
846 | ||
e9bb382b | 847 | mtype = alloc_type_copy (to_type); |
0b92b5bb | 848 | smash_to_methodptr_type (mtype, to_type); |
0d5de010 DJ |
849 | return mtype; |
850 | } | |
851 | ||
7ba81444 MS |
852 | /* Allocate a stub method whose return type is TYPE. This apparently |
853 | happens for speed of symbol reading, since parsing out the | |
854 | arguments to the method is cpu-intensive, the way we are doing it. | |
855 | So, we will fill in arguments later. This always returns a fresh | |
856 | type. */ | |
c906108c SS |
857 | |
858 | struct type * | |
fba45db2 | 859 | allocate_stub_method (struct type *type) |
c906108c SS |
860 | { |
861 | struct type *mtype; | |
862 | ||
e9bb382b UW |
863 | mtype = alloc_type_copy (type); |
864 | TYPE_CODE (mtype) = TYPE_CODE_METHOD; | |
865 | TYPE_LENGTH (mtype) = 1; | |
866 | TYPE_STUB (mtype) = 1; | |
c906108c | 867 | TYPE_TARGET_TYPE (mtype) = type; |
4bfb94b8 | 868 | /* TYPE_SELF_TYPE (mtype) = unknown yet */ |
c16abbde | 869 | return mtype; |
c906108c SS |
870 | } |
871 | ||
0f59d5fc PA |
872 | /* See gdbtypes.h. */ |
873 | ||
874 | bool | |
875 | operator== (const dynamic_prop &l, const dynamic_prop &r) | |
876 | { | |
877 | if (l.kind != r.kind) | |
878 | return false; | |
879 | ||
880 | switch (l.kind) | |
881 | { | |
882 | case PROP_UNDEFINED: | |
883 | return true; | |
884 | case PROP_CONST: | |
885 | return l.data.const_val == r.data.const_val; | |
886 | case PROP_ADDR_OFFSET: | |
887 | case PROP_LOCEXPR: | |
888 | case PROP_LOCLIST: | |
889 | return l.data.baton == r.data.baton; | |
ef83a141 TT |
890 | case PROP_VARIANT_PARTS: |
891 | return l.data.variant_parts == r.data.variant_parts; | |
892 | case PROP_TYPE: | |
893 | return l.data.original_type == r.data.original_type; | |
0f59d5fc PA |
894 | } |
895 | ||
896 | gdb_assert_not_reached ("unhandled dynamic_prop kind"); | |
897 | } | |
898 | ||
899 | /* See gdbtypes.h. */ | |
900 | ||
901 | bool | |
902 | operator== (const range_bounds &l, const range_bounds &r) | |
903 | { | |
904 | #define FIELD_EQ(FIELD) (l.FIELD == r.FIELD) | |
905 | ||
906 | return (FIELD_EQ (low) | |
907 | && FIELD_EQ (high) | |
908 | && FIELD_EQ (flag_upper_bound_is_count) | |
4e962e74 TT |
909 | && FIELD_EQ (flag_bound_evaluated) |
910 | && FIELD_EQ (bias)); | |
0f59d5fc PA |
911 | |
912 | #undef FIELD_EQ | |
913 | } | |
914 | ||
729efb13 SA |
915 | /* Create a range type with a dynamic range from LOW_BOUND to |
916 | HIGH_BOUND, inclusive. See create_range_type for further details. */ | |
c906108c SS |
917 | |
918 | struct type * | |
729efb13 SA |
919 | create_range_type (struct type *result_type, struct type *index_type, |
920 | const struct dynamic_prop *low_bound, | |
4e962e74 TT |
921 | const struct dynamic_prop *high_bound, |
922 | LONGEST bias) | |
c906108c | 923 | { |
b86352cf AB |
924 | /* The INDEX_TYPE should be a type capable of holding the upper and lower |
925 | bounds, as such a zero sized, or void type makes no sense. */ | |
926 | gdb_assert (TYPE_CODE (index_type) != TYPE_CODE_VOID); | |
927 | gdb_assert (TYPE_LENGTH (index_type) > 0); | |
928 | ||
c906108c | 929 | if (result_type == NULL) |
e9bb382b | 930 | result_type = alloc_type_copy (index_type); |
c906108c SS |
931 | TYPE_CODE (result_type) = TYPE_CODE_RANGE; |
932 | TYPE_TARGET_TYPE (result_type) = index_type; | |
74a9bb82 | 933 | if (TYPE_STUB (index_type)) |
876cecd0 | 934 | TYPE_TARGET_STUB (result_type) = 1; |
c906108c SS |
935 | else |
936 | TYPE_LENGTH (result_type) = TYPE_LENGTH (check_typedef (index_type)); | |
729efb13 | 937 | |
43bbcdc2 PH |
938 | TYPE_RANGE_DATA (result_type) = (struct range_bounds *) |
939 | TYPE_ZALLOC (result_type, sizeof (struct range_bounds)); | |
729efb13 SA |
940 | TYPE_RANGE_DATA (result_type)->low = *low_bound; |
941 | TYPE_RANGE_DATA (result_type)->high = *high_bound; | |
4e962e74 | 942 | TYPE_RANGE_DATA (result_type)->bias = bias; |
c906108c | 943 | |
5bbd8269 AB |
944 | /* Initialize the stride to be a constant, the value will already be zero |
945 | thanks to the use of TYPE_ZALLOC above. */ | |
946 | TYPE_RANGE_DATA (result_type)->stride.kind = PROP_CONST; | |
947 | ||
729efb13 | 948 | if (low_bound->kind == PROP_CONST && low_bound->data.const_val >= 0) |
876cecd0 | 949 | TYPE_UNSIGNED (result_type) = 1; |
c906108c | 950 | |
45e44d27 JB |
951 | /* Ada allows the declaration of range types whose upper bound is |
952 | less than the lower bound, so checking the lower bound is not | |
953 | enough. Make sure we do not mark a range type whose upper bound | |
954 | is negative as unsigned. */ | |
955 | if (high_bound->kind == PROP_CONST && high_bound->data.const_val < 0) | |
956 | TYPE_UNSIGNED (result_type) = 0; | |
957 | ||
a05cf17a TT |
958 | TYPE_ENDIANITY_NOT_DEFAULT (result_type) |
959 | = TYPE_ENDIANITY_NOT_DEFAULT (index_type); | |
960 | ||
262452ec | 961 | return result_type; |
c906108c SS |
962 | } |
963 | ||
5bbd8269 AB |
964 | /* See gdbtypes.h. */ |
965 | ||
966 | struct type * | |
967 | create_range_type_with_stride (struct type *result_type, | |
968 | struct type *index_type, | |
969 | const struct dynamic_prop *low_bound, | |
970 | const struct dynamic_prop *high_bound, | |
971 | LONGEST bias, | |
972 | const struct dynamic_prop *stride, | |
973 | bool byte_stride_p) | |
974 | { | |
975 | result_type = create_range_type (result_type, index_type, low_bound, | |
976 | high_bound, bias); | |
977 | ||
978 | gdb_assert (stride != nullptr); | |
979 | TYPE_RANGE_DATA (result_type)->stride = *stride; | |
980 | TYPE_RANGE_DATA (result_type)->flag_is_byte_stride = byte_stride_p; | |
981 | ||
982 | return result_type; | |
983 | } | |
984 | ||
985 | ||
986 | ||
729efb13 SA |
987 | /* Create a range type using either a blank type supplied in |
988 | RESULT_TYPE, or creating a new type, inheriting the objfile from | |
989 | INDEX_TYPE. | |
990 | ||
991 | Indices will be of type INDEX_TYPE, and will range from LOW_BOUND | |
992 | to HIGH_BOUND, inclusive. | |
993 | ||
994 | FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make | |
995 | sure it is TYPE_CODE_UNDEF before we bash it into a range type? */ | |
996 | ||
997 | struct type * | |
998 | create_static_range_type (struct type *result_type, struct type *index_type, | |
999 | LONGEST low_bound, LONGEST high_bound) | |
1000 | { | |
1001 | struct dynamic_prop low, high; | |
1002 | ||
1003 | low.kind = PROP_CONST; | |
1004 | low.data.const_val = low_bound; | |
1005 | ||
1006 | high.kind = PROP_CONST; | |
1007 | high.data.const_val = high_bound; | |
1008 | ||
4e962e74 | 1009 | result_type = create_range_type (result_type, index_type, &low, &high, 0); |
729efb13 SA |
1010 | |
1011 | return result_type; | |
1012 | } | |
1013 | ||
80180f79 SA |
1014 | /* Predicate tests whether BOUNDS are static. Returns 1 if all bounds values |
1015 | are static, otherwise returns 0. */ | |
1016 | ||
5bbd8269 | 1017 | static bool |
80180f79 SA |
1018 | has_static_range (const struct range_bounds *bounds) |
1019 | { | |
5bbd8269 AB |
1020 | /* If the range doesn't have a defined stride then its stride field will |
1021 | be initialized to the constant 0. */ | |
80180f79 | 1022 | return (bounds->low.kind == PROP_CONST |
5bbd8269 AB |
1023 | && bounds->high.kind == PROP_CONST |
1024 | && bounds->stride.kind == PROP_CONST); | |
80180f79 SA |
1025 | } |
1026 | ||
1027 | ||
7ba81444 MS |
1028 | /* Set *LOWP and *HIGHP to the lower and upper bounds of discrete type |
1029 | TYPE. Return 1 if type is a range type, 0 if it is discrete (and | |
1030 | bounds will fit in LONGEST), or -1 otherwise. */ | |
c906108c SS |
1031 | |
1032 | int | |
fba45db2 | 1033 | get_discrete_bounds (struct type *type, LONGEST *lowp, LONGEST *highp) |
c906108c | 1034 | { |
f168693b | 1035 | type = check_typedef (type); |
c906108c SS |
1036 | switch (TYPE_CODE (type)) |
1037 | { | |
1038 | case TYPE_CODE_RANGE: | |
1039 | *lowp = TYPE_LOW_BOUND (type); | |
1040 | *highp = TYPE_HIGH_BOUND (type); | |
1041 | return 1; | |
1042 | case TYPE_CODE_ENUM: | |
1043 | if (TYPE_NFIELDS (type) > 0) | |
1044 | { | |
1045 | /* The enums may not be sorted by value, so search all | |
0963b4bd | 1046 | entries. */ |
c906108c SS |
1047 | int i; |
1048 | ||
14e75d8e | 1049 | *lowp = *highp = TYPE_FIELD_ENUMVAL (type, 0); |
c906108c SS |
1050 | for (i = 0; i < TYPE_NFIELDS (type); i++) |
1051 | { | |
14e75d8e JK |
1052 | if (TYPE_FIELD_ENUMVAL (type, i) < *lowp) |
1053 | *lowp = TYPE_FIELD_ENUMVAL (type, i); | |
1054 | if (TYPE_FIELD_ENUMVAL (type, i) > *highp) | |
1055 | *highp = TYPE_FIELD_ENUMVAL (type, i); | |
c906108c SS |
1056 | } |
1057 | ||
7ba81444 | 1058 | /* Set unsigned indicator if warranted. */ |
c5aa993b | 1059 | if (*lowp >= 0) |
c906108c | 1060 | { |
876cecd0 | 1061 | TYPE_UNSIGNED (type) = 1; |
c906108c SS |
1062 | } |
1063 | } | |
1064 | else | |
1065 | { | |
1066 | *lowp = 0; | |
1067 | *highp = -1; | |
1068 | } | |
1069 | return 0; | |
1070 | case TYPE_CODE_BOOL: | |
1071 | *lowp = 0; | |
1072 | *highp = 1; | |
1073 | return 0; | |
1074 | case TYPE_CODE_INT: | |
c5aa993b | 1075 | if (TYPE_LENGTH (type) > sizeof (LONGEST)) /* Too big */ |
c906108c SS |
1076 | return -1; |
1077 | if (!TYPE_UNSIGNED (type)) | |
1078 | { | |
c5aa993b | 1079 | *lowp = -(1 << (TYPE_LENGTH (type) * TARGET_CHAR_BIT - 1)); |
c906108c SS |
1080 | *highp = -*lowp - 1; |
1081 | return 0; | |
1082 | } | |
86a73007 | 1083 | /* fall through */ |
c906108c SS |
1084 | case TYPE_CODE_CHAR: |
1085 | *lowp = 0; | |
1086 | /* This round-about calculation is to avoid shifting by | |
7b83ea04 | 1087 | TYPE_LENGTH (type) * TARGET_CHAR_BIT, which will not work |
7ba81444 | 1088 | if TYPE_LENGTH (type) == sizeof (LONGEST). */ |
c906108c SS |
1089 | *highp = 1 << (TYPE_LENGTH (type) * TARGET_CHAR_BIT - 1); |
1090 | *highp = (*highp - 1) | *highp; | |
1091 | return 0; | |
1092 | default: | |
1093 | return -1; | |
1094 | } | |
1095 | } | |
1096 | ||
dbc98a8b KW |
1097 | /* Assuming TYPE is a simple, non-empty array type, compute its upper |
1098 | and lower bound. Save the low bound into LOW_BOUND if not NULL. | |
1099 | Save the high bound into HIGH_BOUND if not NULL. | |
1100 | ||
0963b4bd | 1101 | Return 1 if the operation was successful. Return zero otherwise, |
dbc98a8b KW |
1102 | in which case the values of LOW_BOUND and HIGH_BOUNDS are unmodified. |
1103 | ||
1104 | We now simply use get_discrete_bounds call to get the values | |
1105 | of the low and high bounds. | |
1106 | get_discrete_bounds can return three values: | |
1107 | 1, meaning that index is a range, | |
1108 | 0, meaning that index is a discrete type, | |
1109 | or -1 for failure. */ | |
1110 | ||
1111 | int | |
1112 | get_array_bounds (struct type *type, LONGEST *low_bound, LONGEST *high_bound) | |
1113 | { | |
1114 | struct type *index = TYPE_INDEX_TYPE (type); | |
1115 | LONGEST low = 0; | |
1116 | LONGEST high = 0; | |
1117 | int res; | |
1118 | ||
1119 | if (index == NULL) | |
1120 | return 0; | |
1121 | ||
1122 | res = get_discrete_bounds (index, &low, &high); | |
1123 | if (res == -1) | |
1124 | return 0; | |
1125 | ||
1126 | /* Check if the array bounds are undefined. */ | |
1127 | if (res == 1 | |
1128 | && ((low_bound && TYPE_ARRAY_LOWER_BOUND_IS_UNDEFINED (type)) | |
1129 | || (high_bound && TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED (type)))) | |
1130 | return 0; | |
1131 | ||
1132 | if (low_bound) | |
1133 | *low_bound = low; | |
1134 | ||
1135 | if (high_bound) | |
1136 | *high_bound = high; | |
1137 | ||
1138 | return 1; | |
1139 | } | |
1140 | ||
aa715135 JG |
1141 | /* Assuming that TYPE is a discrete type and VAL is a valid integer |
1142 | representation of a value of this type, save the corresponding | |
1143 | position number in POS. | |
1144 | ||
1145 | Its differs from VAL only in the case of enumeration types. In | |
1146 | this case, the position number of the value of the first listed | |
1147 | enumeration literal is zero; the position number of the value of | |
1148 | each subsequent enumeration literal is one more than that of its | |
1149 | predecessor in the list. | |
1150 | ||
1151 | Return 1 if the operation was successful. Return zero otherwise, | |
1152 | in which case the value of POS is unmodified. | |
1153 | */ | |
1154 | ||
1155 | int | |
1156 | discrete_position (struct type *type, LONGEST val, LONGEST *pos) | |
1157 | { | |
1158 | if (TYPE_CODE (type) == TYPE_CODE_ENUM) | |
1159 | { | |
1160 | int i; | |
1161 | ||
1162 | for (i = 0; i < TYPE_NFIELDS (type); i += 1) | |
1163 | { | |
1164 | if (val == TYPE_FIELD_ENUMVAL (type, i)) | |
1165 | { | |
1166 | *pos = i; | |
1167 | return 1; | |
1168 | } | |
1169 | } | |
1170 | /* Invalid enumeration value. */ | |
1171 | return 0; | |
1172 | } | |
1173 | else | |
1174 | { | |
1175 | *pos = val; | |
1176 | return 1; | |
1177 | } | |
1178 | } | |
1179 | ||
7ba81444 MS |
1180 | /* Create an array type using either a blank type supplied in |
1181 | RESULT_TYPE, or creating a new type, inheriting the objfile from | |
1182 | RANGE_TYPE. | |
c906108c SS |
1183 | |
1184 | Elements will be of type ELEMENT_TYPE, the indices will be of type | |
1185 | RANGE_TYPE. | |
1186 | ||
a405673c JB |
1187 | BYTE_STRIDE_PROP, when not NULL, provides the array's byte stride. |
1188 | This byte stride property is added to the resulting array type | |
1189 | as a DYN_PROP_BYTE_STRIDE. As a consequence, the BYTE_STRIDE_PROP | |
1190 | argument can only be used to create types that are objfile-owned | |
1191 | (see add_dyn_prop), meaning that either this function must be called | |
1192 | with an objfile-owned RESULT_TYPE, or an objfile-owned RANGE_TYPE. | |
1193 | ||
1194 | BIT_STRIDE is taken into account only when BYTE_STRIDE_PROP is NULL. | |
dc53a7ad JB |
1195 | If BIT_STRIDE is not zero, build a packed array type whose element |
1196 | size is BIT_STRIDE. Otherwise, ignore this parameter. | |
1197 | ||
7ba81444 MS |
1198 | FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make |
1199 | sure it is TYPE_CODE_UNDEF before we bash it into an array | |
1200 | type? */ | |
c906108c SS |
1201 | |
1202 | struct type * | |
dc53a7ad JB |
1203 | create_array_type_with_stride (struct type *result_type, |
1204 | struct type *element_type, | |
1205 | struct type *range_type, | |
a405673c | 1206 | struct dynamic_prop *byte_stride_prop, |
dc53a7ad | 1207 | unsigned int bit_stride) |
c906108c | 1208 | { |
a405673c JB |
1209 | if (byte_stride_prop != NULL |
1210 | && byte_stride_prop->kind == PROP_CONST) | |
1211 | { | |
1212 | /* The byte stride is actually not dynamic. Pretend we were | |
1213 | called with bit_stride set instead of byte_stride_prop. | |
1214 | This will give us the same result type, while avoiding | |
1215 | the need to handle this as a special case. */ | |
1216 | bit_stride = byte_stride_prop->data.const_val * 8; | |
1217 | byte_stride_prop = NULL; | |
1218 | } | |
1219 | ||
c906108c | 1220 | if (result_type == NULL) |
e9bb382b UW |
1221 | result_type = alloc_type_copy (range_type); |
1222 | ||
c906108c SS |
1223 | TYPE_CODE (result_type) = TYPE_CODE_ARRAY; |
1224 | TYPE_TARGET_TYPE (result_type) = element_type; | |
a405673c JB |
1225 | if (byte_stride_prop == NULL |
1226 | && has_static_range (TYPE_RANGE_DATA (range_type)) | |
b4a7fcab JB |
1227 | && (!type_not_associated (result_type) |
1228 | && !type_not_allocated (result_type))) | |
80180f79 SA |
1229 | { |
1230 | LONGEST low_bound, high_bound; | |
9e80cfa1 | 1231 | int stride; |
5bbd8269 AB |
1232 | |
1233 | /* If the array itself doesn't provide a stride value then take | |
1234 | whatever stride the range provides. Don't update BIT_STRIDE as | |
1235 | we don't want to place the stride value from the range into this | |
1236 | arrays bit size field. */ | |
1237 | stride = bit_stride; | |
1238 | if (stride == 0) | |
1239 | stride = TYPE_BIT_STRIDE (range_type); | |
80180f79 SA |
1240 | |
1241 | if (get_discrete_bounds (range_type, &low_bound, &high_bound) < 0) | |
1242 | low_bound = high_bound = 0; | |
f168693b | 1243 | element_type = check_typedef (element_type); |
80180f79 SA |
1244 | /* Be careful when setting the array length. Ada arrays can be |
1245 | empty arrays with the high_bound being smaller than the low_bound. | |
1246 | In such cases, the array length should be zero. */ | |
1247 | if (high_bound < low_bound) | |
1248 | TYPE_LENGTH (result_type) = 0; | |
9e80cfa1 AB |
1249 | else if (stride != 0) |
1250 | { | |
1251 | /* Ensure that the type length is always positive, even in the | |
1252 | case where (for example in Fortran) we have a negative | |
1253 | stride. It is possible to have a single element array with a | |
1254 | negative stride in Fortran (this doesn't mean anything | |
1255 | special, it's still just a single element array) so do | |
1256 | consider that case when touching this code. */ | |
3104d9ee | 1257 | LONGEST element_count = std::abs (high_bound - low_bound + 1); |
9e80cfa1 | 1258 | TYPE_LENGTH (result_type) |
3104d9ee | 1259 | = ((std::abs (stride) * element_count) + 7) / 8; |
9e80cfa1 | 1260 | } |
80180f79 SA |
1261 | else |
1262 | TYPE_LENGTH (result_type) = | |
1263 | TYPE_LENGTH (element_type) * (high_bound - low_bound + 1); | |
1264 | } | |
ab0d6e0d | 1265 | else |
80180f79 SA |
1266 | { |
1267 | /* This type is dynamic and its length needs to be computed | |
1268 | on demand. In the meantime, avoid leaving the TYPE_LENGTH | |
1269 | undefined by setting it to zero. Although we are not expected | |
1270 | to trust TYPE_LENGTH in this case, setting the size to zero | |
1271 | allows us to avoid allocating objects of random sizes in case | |
1272 | we accidently do. */ | |
1273 | TYPE_LENGTH (result_type) = 0; | |
1274 | } | |
1275 | ||
c906108c SS |
1276 | TYPE_NFIELDS (result_type) = 1; |
1277 | TYPE_FIELDS (result_type) = | |
1deafd4e | 1278 | (struct field *) TYPE_ZALLOC (result_type, sizeof (struct field)); |
262452ec | 1279 | TYPE_INDEX_TYPE (result_type) = range_type; |
a405673c | 1280 | if (byte_stride_prop != NULL) |
50a82047 | 1281 | add_dyn_prop (DYN_PROP_BYTE_STRIDE, *byte_stride_prop, result_type); |
a405673c | 1282 | else if (bit_stride > 0) |
dc53a7ad | 1283 | TYPE_FIELD_BITSIZE (result_type, 0) = bit_stride; |
c906108c | 1284 | |
a9ff5f12 | 1285 | /* TYPE_TARGET_STUB will take care of zero length arrays. */ |
c906108c | 1286 | if (TYPE_LENGTH (result_type) == 0) |
876cecd0 | 1287 | TYPE_TARGET_STUB (result_type) = 1; |
c906108c | 1288 | |
c16abbde | 1289 | return result_type; |
c906108c SS |
1290 | } |
1291 | ||
dc53a7ad JB |
1292 | /* Same as create_array_type_with_stride but with no bit_stride |
1293 | (BIT_STRIDE = 0), thus building an unpacked array. */ | |
1294 | ||
1295 | struct type * | |
1296 | create_array_type (struct type *result_type, | |
1297 | struct type *element_type, | |
1298 | struct type *range_type) | |
1299 | { | |
1300 | return create_array_type_with_stride (result_type, element_type, | |
a405673c | 1301 | range_type, NULL, 0); |
dc53a7ad JB |
1302 | } |
1303 | ||
e3506a9f UW |
1304 | struct type * |
1305 | lookup_array_range_type (struct type *element_type, | |
63375b74 | 1306 | LONGEST low_bound, LONGEST high_bound) |
e3506a9f | 1307 | { |
929b5ad4 JB |
1308 | struct type *index_type; |
1309 | struct type *range_type; | |
1310 | ||
1311 | if (TYPE_OBJFILE_OWNED (element_type)) | |
1312 | index_type = objfile_type (TYPE_OWNER (element_type).objfile)->builtin_int; | |
1313 | else | |
1314 | index_type = builtin_type (get_type_arch (element_type))->builtin_int; | |
1315 | range_type = create_static_range_type (NULL, index_type, | |
1316 | low_bound, high_bound); | |
d8734c88 | 1317 | |
e3506a9f UW |
1318 | return create_array_type (NULL, element_type, range_type); |
1319 | } | |
1320 | ||
7ba81444 MS |
1321 | /* Create a string type using either a blank type supplied in |
1322 | RESULT_TYPE, or creating a new type. String types are similar | |
1323 | enough to array of char types that we can use create_array_type to | |
1324 | build the basic type and then bash it into a string type. | |
c906108c SS |
1325 | |
1326 | For fixed length strings, the range type contains 0 as the lower | |
1327 | bound and the length of the string minus one as the upper bound. | |
1328 | ||
7ba81444 MS |
1329 | FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make |
1330 | sure it is TYPE_CODE_UNDEF before we bash it into a string | |
1331 | type? */ | |
c906108c SS |
1332 | |
1333 | struct type * | |
3b7538c0 UW |
1334 | create_string_type (struct type *result_type, |
1335 | struct type *string_char_type, | |
7ba81444 | 1336 | struct type *range_type) |
c906108c SS |
1337 | { |
1338 | result_type = create_array_type (result_type, | |
f290d38e | 1339 | string_char_type, |
c906108c SS |
1340 | range_type); |
1341 | TYPE_CODE (result_type) = TYPE_CODE_STRING; | |
c16abbde | 1342 | return result_type; |
c906108c SS |
1343 | } |
1344 | ||
e3506a9f UW |
1345 | struct type * |
1346 | lookup_string_range_type (struct type *string_char_type, | |
63375b74 | 1347 | LONGEST low_bound, LONGEST high_bound) |
e3506a9f UW |
1348 | { |
1349 | struct type *result_type; | |
d8734c88 | 1350 | |
e3506a9f UW |
1351 | result_type = lookup_array_range_type (string_char_type, |
1352 | low_bound, high_bound); | |
1353 | TYPE_CODE (result_type) = TYPE_CODE_STRING; | |
1354 | return result_type; | |
1355 | } | |
1356 | ||
c906108c | 1357 | struct type * |
fba45db2 | 1358 | create_set_type (struct type *result_type, struct type *domain_type) |
c906108c | 1359 | { |
c906108c | 1360 | if (result_type == NULL) |
e9bb382b UW |
1361 | result_type = alloc_type_copy (domain_type); |
1362 | ||
c906108c SS |
1363 | TYPE_CODE (result_type) = TYPE_CODE_SET; |
1364 | TYPE_NFIELDS (result_type) = 1; | |
224c3ddb SM |
1365 | TYPE_FIELDS (result_type) |
1366 | = (struct field *) TYPE_ZALLOC (result_type, sizeof (struct field)); | |
c906108c | 1367 | |
74a9bb82 | 1368 | if (!TYPE_STUB (domain_type)) |
c906108c | 1369 | { |
f9780d5b | 1370 | LONGEST low_bound, high_bound, bit_length; |
d8734c88 | 1371 | |
c906108c SS |
1372 | if (get_discrete_bounds (domain_type, &low_bound, &high_bound) < 0) |
1373 | low_bound = high_bound = 0; | |
1374 | bit_length = high_bound - low_bound + 1; | |
1375 | TYPE_LENGTH (result_type) | |
1376 | = (bit_length + TARGET_CHAR_BIT - 1) / TARGET_CHAR_BIT; | |
f9780d5b | 1377 | if (low_bound >= 0) |
876cecd0 | 1378 | TYPE_UNSIGNED (result_type) = 1; |
c906108c SS |
1379 | } |
1380 | TYPE_FIELD_TYPE (result_type, 0) = domain_type; | |
1381 | ||
c16abbde | 1382 | return result_type; |
c906108c SS |
1383 | } |
1384 | ||
ea37ba09 DJ |
1385 | /* Convert ARRAY_TYPE to a vector type. This may modify ARRAY_TYPE |
1386 | and any array types nested inside it. */ | |
1387 | ||
1388 | void | |
1389 | make_vector_type (struct type *array_type) | |
1390 | { | |
1391 | struct type *inner_array, *elt_type; | |
1392 | int flags; | |
1393 | ||
1394 | /* Find the innermost array type, in case the array is | |
1395 | multi-dimensional. */ | |
1396 | inner_array = array_type; | |
1397 | while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array)) == TYPE_CODE_ARRAY) | |
1398 | inner_array = TYPE_TARGET_TYPE (inner_array); | |
1399 | ||
1400 | elt_type = TYPE_TARGET_TYPE (inner_array); | |
1401 | if (TYPE_CODE (elt_type) == TYPE_CODE_INT) | |
1402 | { | |
2844d6b5 | 1403 | flags = TYPE_INSTANCE_FLAGS (elt_type) | TYPE_INSTANCE_FLAG_NOTTEXT; |
ea37ba09 DJ |
1404 | elt_type = make_qualified_type (elt_type, flags, NULL); |
1405 | TYPE_TARGET_TYPE (inner_array) = elt_type; | |
1406 | } | |
1407 | ||
876cecd0 | 1408 | TYPE_VECTOR (array_type) = 1; |
ea37ba09 DJ |
1409 | } |
1410 | ||
794ac428 | 1411 | struct type * |
ac3aafc7 EZ |
1412 | init_vector_type (struct type *elt_type, int n) |
1413 | { | |
1414 | struct type *array_type; | |
d8734c88 | 1415 | |
e3506a9f | 1416 | array_type = lookup_array_range_type (elt_type, 0, n - 1); |
ea37ba09 | 1417 | make_vector_type (array_type); |
ac3aafc7 EZ |
1418 | return array_type; |
1419 | } | |
1420 | ||
09e2d7c7 DE |
1421 | /* Internal routine called by TYPE_SELF_TYPE to return the type that TYPE |
1422 | belongs to. In c++ this is the class of "this", but TYPE_THIS_TYPE is too | |
1423 | confusing. "self" is a common enough replacement for "this". | |
1424 | TYPE must be one of TYPE_CODE_METHODPTR, TYPE_CODE_MEMBERPTR, or | |
1425 | TYPE_CODE_METHOD. */ | |
1426 | ||
1427 | struct type * | |
1428 | internal_type_self_type (struct type *type) | |
1429 | { | |
1430 | switch (TYPE_CODE (type)) | |
1431 | { | |
1432 | case TYPE_CODE_METHODPTR: | |
1433 | case TYPE_CODE_MEMBERPTR: | |
eaaf76ab DE |
1434 | if (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_NONE) |
1435 | return NULL; | |
09e2d7c7 DE |
1436 | gdb_assert (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_SELF_TYPE); |
1437 | return TYPE_MAIN_TYPE (type)->type_specific.self_type; | |
1438 | case TYPE_CODE_METHOD: | |
eaaf76ab DE |
1439 | if (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_NONE) |
1440 | return NULL; | |
09e2d7c7 DE |
1441 | gdb_assert (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_FUNC); |
1442 | return TYPE_MAIN_TYPE (type)->type_specific.func_stuff->self_type; | |
1443 | default: | |
1444 | gdb_assert_not_reached ("bad type"); | |
1445 | } | |
1446 | } | |
1447 | ||
1448 | /* Set the type of the class that TYPE belongs to. | |
1449 | In c++ this is the class of "this". | |
1450 | TYPE must be one of TYPE_CODE_METHODPTR, TYPE_CODE_MEMBERPTR, or | |
1451 | TYPE_CODE_METHOD. */ | |
1452 | ||
1453 | void | |
1454 | set_type_self_type (struct type *type, struct type *self_type) | |
1455 | { | |
1456 | switch (TYPE_CODE (type)) | |
1457 | { | |
1458 | case TYPE_CODE_METHODPTR: | |
1459 | case TYPE_CODE_MEMBERPTR: | |
1460 | if (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_NONE) | |
1461 | TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_SELF_TYPE; | |
1462 | gdb_assert (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_SELF_TYPE); | |
1463 | TYPE_MAIN_TYPE (type)->type_specific.self_type = self_type; | |
1464 | break; | |
1465 | case TYPE_CODE_METHOD: | |
1466 | if (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_NONE) | |
1467 | INIT_FUNC_SPECIFIC (type); | |
1468 | gdb_assert (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_FUNC); | |
1469 | TYPE_MAIN_TYPE (type)->type_specific.func_stuff->self_type = self_type; | |
1470 | break; | |
1471 | default: | |
1472 | gdb_assert_not_reached ("bad type"); | |
1473 | } | |
1474 | } | |
1475 | ||
1476 | /* Smash TYPE to be a type of pointers to members of SELF_TYPE with type | |
0d5de010 DJ |
1477 | TO_TYPE. A member pointer is a wierd thing -- it amounts to a |
1478 | typed offset into a struct, e.g. "an int at offset 8". A MEMBER | |
1479 | TYPE doesn't include the offset (that's the value of the MEMBER | |
1480 | itself), but does include the structure type into which it points | |
1481 | (for some reason). | |
c906108c | 1482 | |
7ba81444 MS |
1483 | When "smashing" the type, we preserve the objfile that the old type |
1484 | pointed to, since we aren't changing where the type is actually | |
c906108c SS |
1485 | allocated. */ |
1486 | ||
1487 | void | |
09e2d7c7 | 1488 | smash_to_memberptr_type (struct type *type, struct type *self_type, |
0d5de010 | 1489 | struct type *to_type) |
c906108c | 1490 | { |
2fdde8f8 | 1491 | smash_type (type); |
09e2d7c7 | 1492 | TYPE_CODE (type) = TYPE_CODE_MEMBERPTR; |
c906108c | 1493 | TYPE_TARGET_TYPE (type) = to_type; |
09e2d7c7 | 1494 | set_type_self_type (type, self_type); |
0d5de010 DJ |
1495 | /* Assume that a data member pointer is the same size as a normal |
1496 | pointer. */ | |
50810684 UW |
1497 | TYPE_LENGTH (type) |
1498 | = gdbarch_ptr_bit (get_type_arch (to_type)) / TARGET_CHAR_BIT; | |
c906108c SS |
1499 | } |
1500 | ||
0b92b5bb TT |
1501 | /* Smash TYPE to be a type of pointer to methods type TO_TYPE. |
1502 | ||
1503 | When "smashing" the type, we preserve the objfile that the old type | |
1504 | pointed to, since we aren't changing where the type is actually | |
1505 | allocated. */ | |
1506 | ||
1507 | void | |
1508 | smash_to_methodptr_type (struct type *type, struct type *to_type) | |
1509 | { | |
1510 | smash_type (type); | |
09e2d7c7 | 1511 | TYPE_CODE (type) = TYPE_CODE_METHODPTR; |
0b92b5bb | 1512 | TYPE_TARGET_TYPE (type) = to_type; |
09e2d7c7 | 1513 | set_type_self_type (type, TYPE_SELF_TYPE (to_type)); |
0b92b5bb | 1514 | TYPE_LENGTH (type) = cplus_method_ptr_size (to_type); |
0b92b5bb TT |
1515 | } |
1516 | ||
09e2d7c7 | 1517 | /* Smash TYPE to be a type of method of SELF_TYPE with type TO_TYPE. |
c906108c SS |
1518 | METHOD just means `function that gets an extra "this" argument'. |
1519 | ||
7ba81444 MS |
1520 | When "smashing" the type, we preserve the objfile that the old type |
1521 | pointed to, since we aren't changing where the type is actually | |
c906108c SS |
1522 | allocated. */ |
1523 | ||
1524 | void | |
09e2d7c7 | 1525 | smash_to_method_type (struct type *type, struct type *self_type, |
ad2f7632 DJ |
1526 | struct type *to_type, struct field *args, |
1527 | int nargs, int varargs) | |
c906108c | 1528 | { |
2fdde8f8 | 1529 | smash_type (type); |
09e2d7c7 | 1530 | TYPE_CODE (type) = TYPE_CODE_METHOD; |
c906108c | 1531 | TYPE_TARGET_TYPE (type) = to_type; |
09e2d7c7 | 1532 | set_type_self_type (type, self_type); |
ad2f7632 DJ |
1533 | TYPE_FIELDS (type) = args; |
1534 | TYPE_NFIELDS (type) = nargs; | |
1535 | if (varargs) | |
876cecd0 | 1536 | TYPE_VARARGS (type) = 1; |
c906108c | 1537 | TYPE_LENGTH (type) = 1; /* In practice, this is never needed. */ |
c906108c SS |
1538 | } |
1539 | ||
a737d952 | 1540 | /* A wrapper of TYPE_NAME which calls error if the type is anonymous. |
d8228535 JK |
1541 | Since GCC PR debug/47510 DWARF provides associated information to detect the |
1542 | anonymous class linkage name from its typedef. | |
1543 | ||
1544 | Parameter TYPE should not yet have CHECK_TYPEDEF applied, this function will | |
1545 | apply it itself. */ | |
1546 | ||
1547 | const char * | |
a737d952 | 1548 | type_name_or_error (struct type *type) |
d8228535 JK |
1549 | { |
1550 | struct type *saved_type = type; | |
1551 | const char *name; | |
1552 | struct objfile *objfile; | |
1553 | ||
f168693b | 1554 | type = check_typedef (type); |
d8228535 | 1555 | |
a737d952 | 1556 | name = TYPE_NAME (type); |
d8228535 JK |
1557 | if (name != NULL) |
1558 | return name; | |
1559 | ||
a737d952 | 1560 | name = TYPE_NAME (saved_type); |
d8228535 JK |
1561 | objfile = TYPE_OBJFILE (saved_type); |
1562 | error (_("Invalid anonymous type %s [in module %s], GCC PR debug/47510 bug?"), | |
4262abfb JK |
1563 | name ? name : "<anonymous>", |
1564 | objfile ? objfile_name (objfile) : "<arch>"); | |
d8228535 JK |
1565 | } |
1566 | ||
7ba81444 MS |
1567 | /* Lookup a typedef or primitive type named NAME, visible in lexical |
1568 | block BLOCK. If NOERR is nonzero, return zero if NAME is not | |
1569 | suitably defined. */ | |
c906108c SS |
1570 | |
1571 | struct type * | |
e6c014f2 | 1572 | lookup_typename (const struct language_defn *language, |
b858499d | 1573 | const char *name, |
34eaf542 | 1574 | const struct block *block, int noerr) |
c906108c | 1575 | { |
52f0bd74 | 1576 | struct symbol *sym; |
c906108c | 1577 | |
1994afbf | 1578 | sym = lookup_symbol_in_language (name, block, VAR_DOMAIN, |
d12307c1 | 1579 | language->la_language, NULL).symbol; |
c51fe631 DE |
1580 | if (sym != NULL && SYMBOL_CLASS (sym) == LOC_TYPEDEF) |
1581 | return SYMBOL_TYPE (sym); | |
1582 | ||
c51fe631 DE |
1583 | if (noerr) |
1584 | return NULL; | |
1585 | error (_("No type named %s."), name); | |
c906108c SS |
1586 | } |
1587 | ||
1588 | struct type * | |
e6c014f2 | 1589 | lookup_unsigned_typename (const struct language_defn *language, |
b858499d | 1590 | const char *name) |
c906108c | 1591 | { |
224c3ddb | 1592 | char *uns = (char *) alloca (strlen (name) + 10); |
c906108c SS |
1593 | |
1594 | strcpy (uns, "unsigned "); | |
1595 | strcpy (uns + 9, name); | |
b858499d | 1596 | return lookup_typename (language, uns, NULL, 0); |
c906108c SS |
1597 | } |
1598 | ||
1599 | struct type * | |
b858499d | 1600 | lookup_signed_typename (const struct language_defn *language, const char *name) |
c906108c SS |
1601 | { |
1602 | struct type *t; | |
224c3ddb | 1603 | char *uns = (char *) alloca (strlen (name) + 8); |
c906108c SS |
1604 | |
1605 | strcpy (uns, "signed "); | |
1606 | strcpy (uns + 7, name); | |
b858499d | 1607 | t = lookup_typename (language, uns, NULL, 1); |
7ba81444 | 1608 | /* If we don't find "signed FOO" just try again with plain "FOO". */ |
c906108c SS |
1609 | if (t != NULL) |
1610 | return t; | |
b858499d | 1611 | return lookup_typename (language, name, NULL, 0); |
c906108c SS |
1612 | } |
1613 | ||
1614 | /* Lookup a structure type named "struct NAME", | |
1615 | visible in lexical block BLOCK. */ | |
1616 | ||
1617 | struct type * | |
270140bd | 1618 | lookup_struct (const char *name, const struct block *block) |
c906108c | 1619 | { |
52f0bd74 | 1620 | struct symbol *sym; |
c906108c | 1621 | |
d12307c1 | 1622 | sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0).symbol; |
c906108c SS |
1623 | |
1624 | if (sym == NULL) | |
1625 | { | |
8a3fe4f8 | 1626 | error (_("No struct type named %s."), name); |
c906108c SS |
1627 | } |
1628 | if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_STRUCT) | |
1629 | { | |
7ba81444 MS |
1630 | error (_("This context has class, union or enum %s, not a struct."), |
1631 | name); | |
c906108c SS |
1632 | } |
1633 | return (SYMBOL_TYPE (sym)); | |
1634 | } | |
1635 | ||
1636 | /* Lookup a union type named "union NAME", | |
1637 | visible in lexical block BLOCK. */ | |
1638 | ||
1639 | struct type * | |
270140bd | 1640 | lookup_union (const char *name, const struct block *block) |
c906108c | 1641 | { |
52f0bd74 | 1642 | struct symbol *sym; |
c5aa993b | 1643 | struct type *t; |
c906108c | 1644 | |
d12307c1 | 1645 | sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0).symbol; |
c906108c SS |
1646 | |
1647 | if (sym == NULL) | |
8a3fe4f8 | 1648 | error (_("No union type named %s."), name); |
c906108c | 1649 | |
c5aa993b | 1650 | t = SYMBOL_TYPE (sym); |
c906108c SS |
1651 | |
1652 | if (TYPE_CODE (t) == TYPE_CODE_UNION) | |
c16abbde | 1653 | return t; |
c906108c | 1654 | |
7ba81444 MS |
1655 | /* If we get here, it's not a union. */ |
1656 | error (_("This context has class, struct or enum %s, not a union."), | |
1657 | name); | |
c906108c SS |
1658 | } |
1659 | ||
c906108c SS |
1660 | /* Lookup an enum type named "enum NAME", |
1661 | visible in lexical block BLOCK. */ | |
1662 | ||
1663 | struct type * | |
270140bd | 1664 | lookup_enum (const char *name, const struct block *block) |
c906108c | 1665 | { |
52f0bd74 | 1666 | struct symbol *sym; |
c906108c | 1667 | |
d12307c1 | 1668 | sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0).symbol; |
c906108c SS |
1669 | if (sym == NULL) |
1670 | { | |
8a3fe4f8 | 1671 | error (_("No enum type named %s."), name); |
c906108c SS |
1672 | } |
1673 | if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_ENUM) | |
1674 | { | |
7ba81444 MS |
1675 | error (_("This context has class, struct or union %s, not an enum."), |
1676 | name); | |
c906108c SS |
1677 | } |
1678 | return (SYMBOL_TYPE (sym)); | |
1679 | } | |
1680 | ||
1681 | /* Lookup a template type named "template NAME<TYPE>", | |
1682 | visible in lexical block BLOCK. */ | |
1683 | ||
1684 | struct type * | |
61f4b350 | 1685 | lookup_template_type (const char *name, struct type *type, |
270140bd | 1686 | const struct block *block) |
c906108c SS |
1687 | { |
1688 | struct symbol *sym; | |
7ba81444 MS |
1689 | char *nam = (char *) |
1690 | alloca (strlen (name) + strlen (TYPE_NAME (type)) + 4); | |
d8734c88 | 1691 | |
c906108c SS |
1692 | strcpy (nam, name); |
1693 | strcat (nam, "<"); | |
0004e5a2 | 1694 | strcat (nam, TYPE_NAME (type)); |
0963b4bd | 1695 | strcat (nam, " >"); /* FIXME, extra space still introduced in gcc? */ |
c906108c | 1696 | |
d12307c1 | 1697 | sym = lookup_symbol (nam, block, VAR_DOMAIN, 0).symbol; |
c906108c SS |
1698 | |
1699 | if (sym == NULL) | |
1700 | { | |
8a3fe4f8 | 1701 | error (_("No template type named %s."), name); |
c906108c SS |
1702 | } |
1703 | if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_STRUCT) | |
1704 | { | |
7ba81444 MS |
1705 | error (_("This context has class, union or enum %s, not a struct."), |
1706 | name); | |
c906108c SS |
1707 | } |
1708 | return (SYMBOL_TYPE (sym)); | |
1709 | } | |
1710 | ||
ef0bd204 | 1711 | /* See gdbtypes.h. */ |
c906108c | 1712 | |
ef0bd204 JB |
1713 | struct_elt |
1714 | lookup_struct_elt (struct type *type, const char *name, int noerr) | |
c906108c SS |
1715 | { |
1716 | int i; | |
1717 | ||
1718 | for (;;) | |
1719 | { | |
f168693b | 1720 | type = check_typedef (type); |
c906108c SS |
1721 | if (TYPE_CODE (type) != TYPE_CODE_PTR |
1722 | && TYPE_CODE (type) != TYPE_CODE_REF) | |
1723 | break; | |
1724 | type = TYPE_TARGET_TYPE (type); | |
1725 | } | |
1726 | ||
687d6395 MS |
1727 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT |
1728 | && TYPE_CODE (type) != TYPE_CODE_UNION) | |
c906108c | 1729 | { |
2f408ecb PA |
1730 | std::string type_name = type_to_string (type); |
1731 | error (_("Type %s is not a structure or union type."), | |
1732 | type_name.c_str ()); | |
c906108c SS |
1733 | } |
1734 | ||
c906108c SS |
1735 | for (i = TYPE_NFIELDS (type) - 1; i >= TYPE_N_BASECLASSES (type); i--) |
1736 | { | |
0d5cff50 | 1737 | const char *t_field_name = TYPE_FIELD_NAME (type, i); |
c906108c | 1738 | |
db577aea | 1739 | if (t_field_name && (strcmp_iw (t_field_name, name) == 0)) |
c906108c | 1740 | { |
ef0bd204 | 1741 | return {&TYPE_FIELD (type, i), TYPE_FIELD_BITPOS (type, i)}; |
c906108c | 1742 | } |
f5a010c0 PM |
1743 | else if (!t_field_name || *t_field_name == '\0') |
1744 | { | |
ef0bd204 JB |
1745 | struct_elt elt |
1746 | = lookup_struct_elt (TYPE_FIELD_TYPE (type, i), name, 1); | |
1747 | if (elt.field != NULL) | |
1748 | { | |
1749 | elt.offset += TYPE_FIELD_BITPOS (type, i); | |
1750 | return elt; | |
1751 | } | |
f5a010c0 | 1752 | } |
c906108c SS |
1753 | } |
1754 | ||
1755 | /* OK, it's not in this class. Recursively check the baseclasses. */ | |
1756 | for (i = TYPE_N_BASECLASSES (type) - 1; i >= 0; i--) | |
1757 | { | |
ef0bd204 JB |
1758 | struct_elt elt = lookup_struct_elt (TYPE_BASECLASS (type, i), name, 1); |
1759 | if (elt.field != NULL) | |
1760 | return elt; | |
c906108c SS |
1761 | } |
1762 | ||
1763 | if (noerr) | |
ef0bd204 | 1764 | return {nullptr, 0}; |
c5aa993b | 1765 | |
2f408ecb PA |
1766 | std::string type_name = type_to_string (type); |
1767 | error (_("Type %s has no component named %s."), type_name.c_str (), name); | |
c906108c SS |
1768 | } |
1769 | ||
ef0bd204 JB |
1770 | /* See gdbtypes.h. */ |
1771 | ||
1772 | struct type * | |
1773 | lookup_struct_elt_type (struct type *type, const char *name, int noerr) | |
1774 | { | |
1775 | struct_elt elt = lookup_struct_elt (type, name, noerr); | |
1776 | if (elt.field != NULL) | |
1777 | return FIELD_TYPE (*elt.field); | |
1778 | else | |
1779 | return NULL; | |
1780 | } | |
1781 | ||
ed3ef339 DE |
1782 | /* Store in *MAX the largest number representable by unsigned integer type |
1783 | TYPE. */ | |
1784 | ||
1785 | void | |
1786 | get_unsigned_type_max (struct type *type, ULONGEST *max) | |
1787 | { | |
1788 | unsigned int n; | |
1789 | ||
f168693b | 1790 | type = check_typedef (type); |
ed3ef339 DE |
1791 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_INT && TYPE_UNSIGNED (type)); |
1792 | gdb_assert (TYPE_LENGTH (type) <= sizeof (ULONGEST)); | |
1793 | ||
1794 | /* Written this way to avoid overflow. */ | |
1795 | n = TYPE_LENGTH (type) * TARGET_CHAR_BIT; | |
1796 | *max = ((((ULONGEST) 1 << (n - 1)) - 1) << 1) | 1; | |
1797 | } | |
1798 | ||
1799 | /* Store in *MIN, *MAX the smallest and largest numbers representable by | |
1800 | signed integer type TYPE. */ | |
1801 | ||
1802 | void | |
1803 | get_signed_type_minmax (struct type *type, LONGEST *min, LONGEST *max) | |
1804 | { | |
1805 | unsigned int n; | |
1806 | ||
f168693b | 1807 | type = check_typedef (type); |
ed3ef339 DE |
1808 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_INT && !TYPE_UNSIGNED (type)); |
1809 | gdb_assert (TYPE_LENGTH (type) <= sizeof (LONGEST)); | |
1810 | ||
1811 | n = TYPE_LENGTH (type) * TARGET_CHAR_BIT; | |
1812 | *min = -((ULONGEST) 1 << (n - 1)); | |
1813 | *max = ((ULONGEST) 1 << (n - 1)) - 1; | |
1814 | } | |
1815 | ||
ae6ae975 DE |
1816 | /* Internal routine called by TYPE_VPTR_FIELDNO to return the value of |
1817 | cplus_stuff.vptr_fieldno. | |
1818 | ||
1819 | cplus_stuff is initialized to cplus_struct_default which does not | |
1820 | set vptr_fieldno to -1 for portability reasons (IWBN to use C99 | |
1821 | designated initializers). We cope with that here. */ | |
1822 | ||
1823 | int | |
1824 | internal_type_vptr_fieldno (struct type *type) | |
1825 | { | |
f168693b | 1826 | type = check_typedef (type); |
ae6ae975 DE |
1827 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_STRUCT |
1828 | || TYPE_CODE (type) == TYPE_CODE_UNION); | |
1829 | if (!HAVE_CPLUS_STRUCT (type)) | |
1830 | return -1; | |
1831 | return TYPE_RAW_CPLUS_SPECIFIC (type)->vptr_fieldno; | |
1832 | } | |
1833 | ||
1834 | /* Set the value of cplus_stuff.vptr_fieldno. */ | |
1835 | ||
1836 | void | |
1837 | set_type_vptr_fieldno (struct type *type, int fieldno) | |
1838 | { | |
f168693b | 1839 | type = check_typedef (type); |
ae6ae975 DE |
1840 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_STRUCT |
1841 | || TYPE_CODE (type) == TYPE_CODE_UNION); | |
1842 | if (!HAVE_CPLUS_STRUCT (type)) | |
1843 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
1844 | TYPE_RAW_CPLUS_SPECIFIC (type)->vptr_fieldno = fieldno; | |
1845 | } | |
1846 | ||
1847 | /* Internal routine called by TYPE_VPTR_BASETYPE to return the value of | |
1848 | cplus_stuff.vptr_basetype. */ | |
1849 | ||
1850 | struct type * | |
1851 | internal_type_vptr_basetype (struct type *type) | |
1852 | { | |
f168693b | 1853 | type = check_typedef (type); |
ae6ae975 DE |
1854 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_STRUCT |
1855 | || TYPE_CODE (type) == TYPE_CODE_UNION); | |
1856 | gdb_assert (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_CPLUS_STUFF); | |
1857 | return TYPE_RAW_CPLUS_SPECIFIC (type)->vptr_basetype; | |
1858 | } | |
1859 | ||
1860 | /* Set the value of cplus_stuff.vptr_basetype. */ | |
1861 | ||
1862 | void | |
1863 | set_type_vptr_basetype (struct type *type, struct type *basetype) | |
1864 | { | |
f168693b | 1865 | type = check_typedef (type); |
ae6ae975 DE |
1866 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_STRUCT |
1867 | || TYPE_CODE (type) == TYPE_CODE_UNION); | |
1868 | if (!HAVE_CPLUS_STRUCT (type)) | |
1869 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
1870 | TYPE_RAW_CPLUS_SPECIFIC (type)->vptr_basetype = basetype; | |
1871 | } | |
1872 | ||
81fe8080 DE |
1873 | /* Lookup the vptr basetype/fieldno values for TYPE. |
1874 | If found store vptr_basetype in *BASETYPEP if non-NULL, and return | |
1875 | vptr_fieldno. Also, if found and basetype is from the same objfile, | |
1876 | cache the results. | |
1877 | If not found, return -1 and ignore BASETYPEP. | |
1878 | Callers should be aware that in some cases (for example, | |
c906108c | 1879 | the type or one of its baseclasses is a stub type and we are |
d48cc9dd DJ |
1880 | debugging a .o file, or the compiler uses DWARF-2 and is not GCC), |
1881 | this function will not be able to find the | |
7ba81444 | 1882 | virtual function table pointer, and vptr_fieldno will remain -1 and |
81fe8080 | 1883 | vptr_basetype will remain NULL or incomplete. */ |
c906108c | 1884 | |
81fe8080 DE |
1885 | int |
1886 | get_vptr_fieldno (struct type *type, struct type **basetypep) | |
c906108c | 1887 | { |
f168693b | 1888 | type = check_typedef (type); |
c906108c SS |
1889 | |
1890 | if (TYPE_VPTR_FIELDNO (type) < 0) | |
1891 | { | |
1892 | int i; | |
1893 | ||
7ba81444 MS |
1894 | /* We must start at zero in case the first (and only) baseclass |
1895 | is virtual (and hence we cannot share the table pointer). */ | |
c906108c SS |
1896 | for (i = 0; i < TYPE_N_BASECLASSES (type); i++) |
1897 | { | |
81fe8080 DE |
1898 | struct type *baseclass = check_typedef (TYPE_BASECLASS (type, i)); |
1899 | int fieldno; | |
1900 | struct type *basetype; | |
1901 | ||
1902 | fieldno = get_vptr_fieldno (baseclass, &basetype); | |
1903 | if (fieldno >= 0) | |
c906108c | 1904 | { |
81fe8080 | 1905 | /* If the type comes from a different objfile we can't cache |
0963b4bd | 1906 | it, it may have a different lifetime. PR 2384 */ |
5ef73790 | 1907 | if (TYPE_OBJFILE (type) == TYPE_OBJFILE (basetype)) |
81fe8080 | 1908 | { |
ae6ae975 DE |
1909 | set_type_vptr_fieldno (type, fieldno); |
1910 | set_type_vptr_basetype (type, basetype); | |
81fe8080 DE |
1911 | } |
1912 | if (basetypep) | |
1913 | *basetypep = basetype; | |
1914 | return fieldno; | |
c906108c SS |
1915 | } |
1916 | } | |
81fe8080 DE |
1917 | |
1918 | /* Not found. */ | |
1919 | return -1; | |
1920 | } | |
1921 | else | |
1922 | { | |
1923 | if (basetypep) | |
1924 | *basetypep = TYPE_VPTR_BASETYPE (type); | |
1925 | return TYPE_VPTR_FIELDNO (type); | |
c906108c SS |
1926 | } |
1927 | } | |
1928 | ||
44e1a9eb DJ |
1929 | static void |
1930 | stub_noname_complaint (void) | |
1931 | { | |
b98664d3 | 1932 | complaint (_("stub type has NULL name")); |
44e1a9eb DJ |
1933 | } |
1934 | ||
a405673c JB |
1935 | /* Return nonzero if TYPE has a DYN_PROP_BYTE_STRIDE dynamic property |
1936 | attached to it, and that property has a non-constant value. */ | |
1937 | ||
1938 | static int | |
1939 | array_type_has_dynamic_stride (struct type *type) | |
1940 | { | |
1941 | struct dynamic_prop *prop = get_dyn_prop (DYN_PROP_BYTE_STRIDE, type); | |
1942 | ||
1943 | return (prop != NULL && prop->kind != PROP_CONST); | |
1944 | } | |
1945 | ||
d98b7a16 | 1946 | /* Worker for is_dynamic_type. */ |
80180f79 | 1947 | |
d98b7a16 | 1948 | static int |
ee715b5a | 1949 | is_dynamic_type_internal (struct type *type, int top_level) |
80180f79 SA |
1950 | { |
1951 | type = check_typedef (type); | |
1952 | ||
e771e4be PMR |
1953 | /* We only want to recognize references at the outermost level. */ |
1954 | if (top_level && TYPE_CODE (type) == TYPE_CODE_REF) | |
1955 | type = check_typedef (TYPE_TARGET_TYPE (type)); | |
1956 | ||
3cdcd0ce JB |
1957 | /* Types that have a dynamic TYPE_DATA_LOCATION are considered |
1958 | dynamic, even if the type itself is statically defined. | |
1959 | From a user's point of view, this may appear counter-intuitive; | |
1960 | but it makes sense in this context, because the point is to determine | |
1961 | whether any part of the type needs to be resolved before it can | |
1962 | be exploited. */ | |
1963 | if (TYPE_DATA_LOCATION (type) != NULL | |
1964 | && (TYPE_DATA_LOCATION_KIND (type) == PROP_LOCEXPR | |
1965 | || TYPE_DATA_LOCATION_KIND (type) == PROP_LOCLIST)) | |
1966 | return 1; | |
1967 | ||
3f2f83dd KB |
1968 | if (TYPE_ASSOCIATED_PROP (type)) |
1969 | return 1; | |
1970 | ||
1971 | if (TYPE_ALLOCATED_PROP (type)) | |
1972 | return 1; | |
1973 | ||
ef83a141 TT |
1974 | struct dynamic_prop *prop = get_dyn_prop (DYN_PROP_VARIANT_PARTS, type); |
1975 | if (prop != nullptr && prop->kind != PROP_TYPE) | |
1976 | return 1; | |
1977 | ||
80180f79 SA |
1978 | switch (TYPE_CODE (type)) |
1979 | { | |
6f8a3220 | 1980 | case TYPE_CODE_RANGE: |
ddb87a81 JB |
1981 | { |
1982 | /* A range type is obviously dynamic if it has at least one | |
1983 | dynamic bound. But also consider the range type to be | |
1984 | dynamic when its subtype is dynamic, even if the bounds | |
1985 | of the range type are static. It allows us to assume that | |
1986 | the subtype of a static range type is also static. */ | |
1987 | return (!has_static_range (TYPE_RANGE_DATA (type)) | |
ee715b5a | 1988 | || is_dynamic_type_internal (TYPE_TARGET_TYPE (type), 0)); |
ddb87a81 | 1989 | } |
6f8a3220 | 1990 | |
216a7e6b AB |
1991 | case TYPE_CODE_STRING: |
1992 | /* Strings are very much like an array of characters, and can be | |
1993 | treated as one here. */ | |
80180f79 SA |
1994 | case TYPE_CODE_ARRAY: |
1995 | { | |
80180f79 | 1996 | gdb_assert (TYPE_NFIELDS (type) == 1); |
6f8a3220 | 1997 | |
a405673c | 1998 | /* The array is dynamic if either the bounds are dynamic... */ |
ee715b5a | 1999 | if (is_dynamic_type_internal (TYPE_INDEX_TYPE (type), 0)) |
80180f79 | 2000 | return 1; |
a405673c JB |
2001 | /* ... or the elements it contains have a dynamic contents... */ |
2002 | if (is_dynamic_type_internal (TYPE_TARGET_TYPE (type), 0)) | |
2003 | return 1; | |
2004 | /* ... or if it has a dynamic stride... */ | |
2005 | if (array_type_has_dynamic_stride (type)) | |
2006 | return 1; | |
2007 | return 0; | |
80180f79 | 2008 | } |
012370f6 TT |
2009 | |
2010 | case TYPE_CODE_STRUCT: | |
2011 | case TYPE_CODE_UNION: | |
2012 | { | |
2013 | int i; | |
2014 | ||
2015 | for (i = 0; i < TYPE_NFIELDS (type); ++i) | |
2016 | if (!field_is_static (&TYPE_FIELD (type, i)) | |
ee715b5a | 2017 | && is_dynamic_type_internal (TYPE_FIELD_TYPE (type, i), 0)) |
012370f6 TT |
2018 | return 1; |
2019 | } | |
2020 | break; | |
80180f79 | 2021 | } |
92e2a17f TT |
2022 | |
2023 | return 0; | |
80180f79 SA |
2024 | } |
2025 | ||
d98b7a16 TT |
2026 | /* See gdbtypes.h. */ |
2027 | ||
2028 | int | |
2029 | is_dynamic_type (struct type *type) | |
2030 | { | |
ee715b5a | 2031 | return is_dynamic_type_internal (type, 1); |
d98b7a16 TT |
2032 | } |
2033 | ||
df25ebbd | 2034 | static struct type *resolve_dynamic_type_internal |
ee715b5a | 2035 | (struct type *type, struct property_addr_info *addr_stack, int top_level); |
d98b7a16 | 2036 | |
df25ebbd JB |
2037 | /* Given a dynamic range type (dyn_range_type) and a stack of |
2038 | struct property_addr_info elements, return a static version | |
2039 | of that type. */ | |
d190df30 | 2040 | |
80180f79 | 2041 | static struct type * |
df25ebbd JB |
2042 | resolve_dynamic_range (struct type *dyn_range_type, |
2043 | struct property_addr_info *addr_stack) | |
80180f79 SA |
2044 | { |
2045 | CORE_ADDR value; | |
ddb87a81 | 2046 | struct type *static_range_type, *static_target_type; |
80180f79 | 2047 | const struct dynamic_prop *prop; |
5bbd8269 | 2048 | struct dynamic_prop low_bound, high_bound, stride; |
80180f79 | 2049 | |
6f8a3220 | 2050 | gdb_assert (TYPE_CODE (dyn_range_type) == TYPE_CODE_RANGE); |
80180f79 | 2051 | |
6f8a3220 | 2052 | prop = &TYPE_RANGE_DATA (dyn_range_type)->low; |
63e43d3a | 2053 | if (dwarf2_evaluate_property (prop, NULL, addr_stack, &value)) |
80180f79 SA |
2054 | { |
2055 | low_bound.kind = PROP_CONST; | |
2056 | low_bound.data.const_val = value; | |
2057 | } | |
2058 | else | |
2059 | { | |
2060 | low_bound.kind = PROP_UNDEFINED; | |
2061 | low_bound.data.const_val = 0; | |
2062 | } | |
2063 | ||
6f8a3220 | 2064 | prop = &TYPE_RANGE_DATA (dyn_range_type)->high; |
63e43d3a | 2065 | if (dwarf2_evaluate_property (prop, NULL, addr_stack, &value)) |
80180f79 SA |
2066 | { |
2067 | high_bound.kind = PROP_CONST; | |
2068 | high_bound.data.const_val = value; | |
c451ebe5 | 2069 | |
6f8a3220 | 2070 | if (TYPE_RANGE_DATA (dyn_range_type)->flag_upper_bound_is_count) |
c451ebe5 SA |
2071 | high_bound.data.const_val |
2072 | = low_bound.data.const_val + high_bound.data.const_val - 1; | |
80180f79 SA |
2073 | } |
2074 | else | |
2075 | { | |
2076 | high_bound.kind = PROP_UNDEFINED; | |
2077 | high_bound.data.const_val = 0; | |
2078 | } | |
2079 | ||
5bbd8269 AB |
2080 | bool byte_stride_p = TYPE_RANGE_DATA (dyn_range_type)->flag_is_byte_stride; |
2081 | prop = &TYPE_RANGE_DATA (dyn_range_type)->stride; | |
2082 | if (dwarf2_evaluate_property (prop, NULL, addr_stack, &value)) | |
2083 | { | |
2084 | stride.kind = PROP_CONST; | |
2085 | stride.data.const_val = value; | |
2086 | ||
2087 | /* If we have a bit stride that is not an exact number of bytes then | |
2088 | I really don't think this is going to work with current GDB, the | |
2089 | array indexing code in GDB seems to be pretty heavily tied to byte | |
2090 | offsets right now. Assuming 8 bits in a byte. */ | |
2091 | struct gdbarch *gdbarch = get_type_arch (dyn_range_type); | |
2092 | int unit_size = gdbarch_addressable_memory_unit_size (gdbarch); | |
2093 | if (!byte_stride_p && (value % (unit_size * 8)) != 0) | |
2094 | error (_("bit strides that are not a multiple of the byte size " | |
2095 | "are currently not supported")); | |
2096 | } | |
2097 | else | |
2098 | { | |
2099 | stride.kind = PROP_UNDEFINED; | |
2100 | stride.data.const_val = 0; | |
2101 | byte_stride_p = true; | |
2102 | } | |
2103 | ||
ddb87a81 JB |
2104 | static_target_type |
2105 | = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (dyn_range_type), | |
ee715b5a | 2106 | addr_stack, 0); |
4e962e74 | 2107 | LONGEST bias = TYPE_RANGE_DATA (dyn_range_type)->bias; |
5bbd8269 AB |
2108 | static_range_type = create_range_type_with_stride |
2109 | (copy_type (dyn_range_type), static_target_type, | |
2110 | &low_bound, &high_bound, bias, &stride, byte_stride_p); | |
6f8a3220 JB |
2111 | TYPE_RANGE_DATA (static_range_type)->flag_bound_evaluated = 1; |
2112 | return static_range_type; | |
2113 | } | |
2114 | ||
216a7e6b AB |
2115 | /* Resolves dynamic bound values of an array or string type TYPE to static |
2116 | ones. ADDR_STACK is a stack of struct property_addr_info to be used if | |
2117 | needed during the dynamic resolution. */ | |
6f8a3220 JB |
2118 | |
2119 | static struct type * | |
216a7e6b AB |
2120 | resolve_dynamic_array_or_string (struct type *type, |
2121 | struct property_addr_info *addr_stack) | |
6f8a3220 JB |
2122 | { |
2123 | CORE_ADDR value; | |
2124 | struct type *elt_type; | |
2125 | struct type *range_type; | |
2126 | struct type *ary_dim; | |
3f2f83dd | 2127 | struct dynamic_prop *prop; |
a405673c | 2128 | unsigned int bit_stride = 0; |
6f8a3220 | 2129 | |
216a7e6b AB |
2130 | /* For dynamic type resolution strings can be treated like arrays of |
2131 | characters. */ | |
2132 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_ARRAY | |
2133 | || TYPE_CODE (type) == TYPE_CODE_STRING); | |
6f8a3220 | 2134 | |
3f2f83dd KB |
2135 | type = copy_type (type); |
2136 | ||
6f8a3220 JB |
2137 | elt_type = type; |
2138 | range_type = check_typedef (TYPE_INDEX_TYPE (elt_type)); | |
df25ebbd | 2139 | range_type = resolve_dynamic_range (range_type, addr_stack); |
6f8a3220 | 2140 | |
3f2f83dd KB |
2141 | /* Resolve allocated/associated here before creating a new array type, which |
2142 | will update the length of the array accordingly. */ | |
2143 | prop = TYPE_ALLOCATED_PROP (type); | |
2144 | if (prop != NULL && dwarf2_evaluate_property (prop, NULL, addr_stack, &value)) | |
2145 | { | |
2146 | TYPE_DYN_PROP_ADDR (prop) = value; | |
2147 | TYPE_DYN_PROP_KIND (prop) = PROP_CONST; | |
2148 | } | |
2149 | prop = TYPE_ASSOCIATED_PROP (type); | |
2150 | if (prop != NULL && dwarf2_evaluate_property (prop, NULL, addr_stack, &value)) | |
2151 | { | |
2152 | TYPE_DYN_PROP_ADDR (prop) = value; | |
2153 | TYPE_DYN_PROP_KIND (prop) = PROP_CONST; | |
2154 | } | |
2155 | ||
80180f79 SA |
2156 | ary_dim = check_typedef (TYPE_TARGET_TYPE (elt_type)); |
2157 | ||
2158 | if (ary_dim != NULL && TYPE_CODE (ary_dim) == TYPE_CODE_ARRAY) | |
216a7e6b | 2159 | elt_type = resolve_dynamic_array_or_string (ary_dim, addr_stack); |
80180f79 SA |
2160 | else |
2161 | elt_type = TYPE_TARGET_TYPE (type); | |
2162 | ||
a405673c JB |
2163 | prop = get_dyn_prop (DYN_PROP_BYTE_STRIDE, type); |
2164 | if (prop != NULL) | |
2165 | { | |
603490bf | 2166 | if (dwarf2_evaluate_property (prop, NULL, addr_stack, &value)) |
a405673c JB |
2167 | { |
2168 | remove_dyn_prop (DYN_PROP_BYTE_STRIDE, type); | |
2169 | bit_stride = (unsigned int) (value * 8); | |
2170 | } | |
2171 | else | |
2172 | { | |
2173 | /* Could be a bug in our code, but it could also happen | |
2174 | if the DWARF info is not correct. Issue a warning, | |
2175 | and assume no byte/bit stride (leave bit_stride = 0). */ | |
2176 | warning (_("cannot determine array stride for type %s"), | |
2177 | TYPE_NAME (type) ? TYPE_NAME (type) : "<no name>"); | |
2178 | } | |
2179 | } | |
2180 | else | |
2181 | bit_stride = TYPE_FIELD_BITSIZE (type, 0); | |
2182 | ||
2183 | return create_array_type_with_stride (type, elt_type, range_type, NULL, | |
2184 | bit_stride); | |
80180f79 SA |
2185 | } |
2186 | ||
012370f6 | 2187 | /* Resolve dynamic bounds of members of the union TYPE to static |
df25ebbd JB |
2188 | bounds. ADDR_STACK is a stack of struct property_addr_info |
2189 | to be used if needed during the dynamic resolution. */ | |
012370f6 TT |
2190 | |
2191 | static struct type * | |
df25ebbd JB |
2192 | resolve_dynamic_union (struct type *type, |
2193 | struct property_addr_info *addr_stack) | |
012370f6 TT |
2194 | { |
2195 | struct type *resolved_type; | |
2196 | int i; | |
2197 | unsigned int max_len = 0; | |
2198 | ||
2199 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_UNION); | |
2200 | ||
2201 | resolved_type = copy_type (type); | |
2202 | TYPE_FIELDS (resolved_type) | |
224c3ddb SM |
2203 | = (struct field *) TYPE_ALLOC (resolved_type, |
2204 | TYPE_NFIELDS (resolved_type) | |
2205 | * sizeof (struct field)); | |
012370f6 TT |
2206 | memcpy (TYPE_FIELDS (resolved_type), |
2207 | TYPE_FIELDS (type), | |
2208 | TYPE_NFIELDS (resolved_type) * sizeof (struct field)); | |
2209 | for (i = 0; i < TYPE_NFIELDS (resolved_type); ++i) | |
2210 | { | |
2211 | struct type *t; | |
2212 | ||
2213 | if (field_is_static (&TYPE_FIELD (type, i))) | |
2214 | continue; | |
2215 | ||
d98b7a16 | 2216 | t = resolve_dynamic_type_internal (TYPE_FIELD_TYPE (resolved_type, i), |
ee715b5a | 2217 | addr_stack, 0); |
012370f6 TT |
2218 | TYPE_FIELD_TYPE (resolved_type, i) = t; |
2219 | if (TYPE_LENGTH (t) > max_len) | |
2220 | max_len = TYPE_LENGTH (t); | |
2221 | } | |
2222 | ||
2223 | TYPE_LENGTH (resolved_type) = max_len; | |
2224 | return resolved_type; | |
2225 | } | |
2226 | ||
ef83a141 TT |
2227 | /* See gdbtypes.h. */ |
2228 | ||
2229 | bool | |
2230 | variant::matches (ULONGEST value, bool is_unsigned) const | |
2231 | { | |
2232 | for (const discriminant_range &range : discriminants) | |
2233 | if (range.contains (value, is_unsigned)) | |
2234 | return true; | |
2235 | return false; | |
2236 | } | |
2237 | ||
2238 | static void | |
2239 | compute_variant_fields_inner (struct type *type, | |
2240 | struct property_addr_info *addr_stack, | |
2241 | const variant_part &part, | |
2242 | std::vector<bool> &flags); | |
2243 | ||
2244 | /* A helper function to determine which variant fields will be active. | |
2245 | This handles both the variant's direct fields, and any variant | |
2246 | parts embedded in this variant. TYPE is the type we're examining. | |
2247 | ADDR_STACK holds information about the concrete object. VARIANT is | |
2248 | the current variant to be handled. FLAGS is where the results are | |
2249 | stored -- this function sets the Nth element in FLAGS if the | |
2250 | corresponding field is enabled. ENABLED is whether this variant is | |
2251 | enabled or not. */ | |
2252 | ||
2253 | static void | |
2254 | compute_variant_fields_recurse (struct type *type, | |
2255 | struct property_addr_info *addr_stack, | |
2256 | const variant &variant, | |
2257 | std::vector<bool> &flags, | |
2258 | bool enabled) | |
2259 | { | |
2260 | for (int field = variant.first_field; field < variant.last_field; ++field) | |
2261 | flags[field] = enabled; | |
2262 | ||
2263 | for (const variant_part &new_part : variant.parts) | |
2264 | { | |
2265 | if (enabled) | |
2266 | compute_variant_fields_inner (type, addr_stack, new_part, flags); | |
2267 | else | |
2268 | { | |
2269 | for (const auto &sub_variant : new_part.variants) | |
2270 | compute_variant_fields_recurse (type, addr_stack, sub_variant, | |
2271 | flags, enabled); | |
2272 | } | |
2273 | } | |
2274 | } | |
2275 | ||
2276 | /* A helper function to determine which variant fields will be active. | |
2277 | This evaluates the discriminant, decides which variant (if any) is | |
2278 | active, and then updates FLAGS to reflect which fields should be | |
2279 | available. TYPE is the type we're examining. ADDR_STACK holds | |
2280 | information about the concrete object. VARIANT is the current | |
2281 | variant to be handled. FLAGS is where the results are stored -- | |
2282 | this function sets the Nth element in FLAGS if the corresponding | |
2283 | field is enabled. */ | |
2284 | ||
2285 | static void | |
2286 | compute_variant_fields_inner (struct type *type, | |
2287 | struct property_addr_info *addr_stack, | |
2288 | const variant_part &part, | |
2289 | std::vector<bool> &flags) | |
2290 | { | |
2291 | /* Evaluate the discriminant. */ | |
2292 | gdb::optional<ULONGEST> discr_value; | |
2293 | if (part.discriminant_index != -1) | |
2294 | { | |
2295 | int idx = part.discriminant_index; | |
2296 | ||
2297 | if (TYPE_FIELD_LOC_KIND (type, idx) != FIELD_LOC_KIND_BITPOS) | |
2298 | error (_("Cannot determine struct field location" | |
2299 | " (invalid location kind)")); | |
2300 | ||
2301 | if (addr_stack->valaddr != NULL) | |
2302 | discr_value = unpack_field_as_long (type, addr_stack->valaddr, idx); | |
2303 | else | |
2304 | { | |
2305 | CORE_ADDR addr = (addr_stack->addr | |
2306 | + (TYPE_FIELD_BITPOS (type, idx) | |
2307 | / TARGET_CHAR_BIT)); | |
2308 | ||
2309 | LONGEST bitsize = TYPE_FIELD_BITSIZE (type, idx); | |
2310 | LONGEST size = bitsize / 8; | |
2311 | if (size == 0) | |
2312 | size = TYPE_LENGTH (TYPE_FIELD_TYPE (type, idx)); | |
2313 | ||
2314 | gdb_byte bits[sizeof (ULONGEST)]; | |
2315 | read_memory (addr, bits, size); | |
2316 | ||
2317 | LONGEST bitpos = (TYPE_FIELD_BITPOS (type, idx) | |
2318 | % TARGET_CHAR_BIT); | |
2319 | ||
2320 | discr_value = unpack_bits_as_long (TYPE_FIELD_TYPE (type, idx), | |
2321 | bits, bitpos, bitsize); | |
2322 | } | |
2323 | } | |
2324 | ||
2325 | /* Go through each variant and see which applies. */ | |
2326 | const variant *default_variant = nullptr; | |
2327 | const variant *applied_variant = nullptr; | |
2328 | for (const auto &variant : part.variants) | |
2329 | { | |
2330 | if (variant.is_default ()) | |
2331 | default_variant = &variant; | |
2332 | else if (discr_value.has_value () | |
2333 | && variant.matches (*discr_value, part.is_unsigned)) | |
2334 | { | |
2335 | applied_variant = &variant; | |
2336 | break; | |
2337 | } | |
2338 | } | |
2339 | if (applied_variant == nullptr) | |
2340 | applied_variant = default_variant; | |
2341 | ||
2342 | for (const auto &variant : part.variants) | |
2343 | compute_variant_fields_recurse (type, addr_stack, variant, | |
2344 | flags, applied_variant == &variant); | |
2345 | } | |
2346 | ||
2347 | /* Determine which variant fields are available in TYPE. The enabled | |
2348 | fields are stored in RESOLVED_TYPE. ADDR_STACK holds information | |
2349 | about the concrete object. PARTS describes the top-level variant | |
2350 | parts for this type. */ | |
2351 | ||
2352 | static void | |
2353 | compute_variant_fields (struct type *type, | |
2354 | struct type *resolved_type, | |
2355 | struct property_addr_info *addr_stack, | |
2356 | const gdb::array_view<variant_part> &parts) | |
2357 | { | |
2358 | /* Assume all fields are included by default. */ | |
2359 | std::vector<bool> flags (TYPE_NFIELDS (resolved_type), true); | |
2360 | ||
2361 | /* Now disable fields based on the variants that control them. */ | |
2362 | for (const auto &part : parts) | |
2363 | compute_variant_fields_inner (type, addr_stack, part, flags); | |
2364 | ||
2365 | TYPE_NFIELDS (resolved_type) = std::count (flags.begin (), flags.end (), | |
2366 | true); | |
2367 | TYPE_FIELDS (resolved_type) | |
2368 | = (struct field *) TYPE_ALLOC (resolved_type, | |
2369 | TYPE_NFIELDS (resolved_type) | |
2370 | * sizeof (struct field)); | |
2371 | int out = 0; | |
2372 | for (int i = 0; i < TYPE_NFIELDS (type); ++i) | |
2373 | { | |
2374 | if (!flags[i]) | |
2375 | continue; | |
2376 | ||
2377 | TYPE_FIELD (resolved_type, out) = TYPE_FIELD (type, i); | |
2378 | ++out; | |
2379 | } | |
2380 | } | |
2381 | ||
012370f6 | 2382 | /* Resolve dynamic bounds of members of the struct TYPE to static |
df25ebbd JB |
2383 | bounds. ADDR_STACK is a stack of struct property_addr_info to |
2384 | be used if needed during the dynamic resolution. */ | |
012370f6 TT |
2385 | |
2386 | static struct type * | |
df25ebbd JB |
2387 | resolve_dynamic_struct (struct type *type, |
2388 | struct property_addr_info *addr_stack) | |
012370f6 TT |
2389 | { |
2390 | struct type *resolved_type; | |
2391 | int i; | |
6908c509 | 2392 | unsigned resolved_type_bit_length = 0; |
012370f6 TT |
2393 | |
2394 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_STRUCT); | |
2395 | gdb_assert (TYPE_NFIELDS (type) > 0); | |
2396 | ||
2397 | resolved_type = copy_type (type); | |
ef83a141 TT |
2398 | |
2399 | struct dynamic_prop *variant_prop = get_dyn_prop (DYN_PROP_VARIANT_PARTS, | |
2400 | resolved_type); | |
2401 | if (variant_prop != nullptr && variant_prop->kind == PROP_VARIANT_PARTS) | |
2402 | { | |
2403 | compute_variant_fields (type, resolved_type, addr_stack, | |
2404 | *variant_prop->data.variant_parts); | |
2405 | /* We want to leave the property attached, so that the Rust code | |
2406 | can tell whether the type was originally an enum. */ | |
2407 | variant_prop->kind = PROP_TYPE; | |
2408 | variant_prop->data.original_type = type; | |
2409 | } | |
2410 | else | |
2411 | { | |
2412 | TYPE_FIELDS (resolved_type) | |
2413 | = (struct field *) TYPE_ALLOC (resolved_type, | |
2414 | TYPE_NFIELDS (resolved_type) | |
2415 | * sizeof (struct field)); | |
2416 | memcpy (TYPE_FIELDS (resolved_type), | |
2417 | TYPE_FIELDS (type), | |
2418 | TYPE_NFIELDS (resolved_type) * sizeof (struct field)); | |
2419 | } | |
2420 | ||
012370f6 TT |
2421 | for (i = 0; i < TYPE_NFIELDS (resolved_type); ++i) |
2422 | { | |
6908c509 | 2423 | unsigned new_bit_length; |
df25ebbd | 2424 | struct property_addr_info pinfo; |
012370f6 | 2425 | |
ef83a141 | 2426 | if (field_is_static (&TYPE_FIELD (resolved_type, i))) |
012370f6 TT |
2427 | continue; |
2428 | ||
6908c509 JB |
2429 | /* As we know this field is not a static field, the field's |
2430 | field_loc_kind should be FIELD_LOC_KIND_BITPOS. Verify | |
2431 | this is the case, but only trigger a simple error rather | |
2432 | than an internal error if that fails. While failing | |
2433 | that verification indicates a bug in our code, the error | |
2434 | is not severe enough to suggest to the user he stops | |
2435 | his debugging session because of it. */ | |
ef83a141 | 2436 | if (TYPE_FIELD_LOC_KIND (resolved_type, i) != FIELD_LOC_KIND_BITPOS) |
6908c509 JB |
2437 | error (_("Cannot determine struct field location" |
2438 | " (invalid location kind)")); | |
df25ebbd | 2439 | |
ef83a141 | 2440 | pinfo.type = check_typedef (TYPE_FIELD_TYPE (resolved_type, i)); |
c3345124 | 2441 | pinfo.valaddr = addr_stack->valaddr; |
9920b434 BH |
2442 | pinfo.addr |
2443 | = (addr_stack->addr | |
2444 | + (TYPE_FIELD_BITPOS (resolved_type, i) / TARGET_CHAR_BIT)); | |
df25ebbd JB |
2445 | pinfo.next = addr_stack; |
2446 | ||
2447 | TYPE_FIELD_TYPE (resolved_type, i) | |
2448 | = resolve_dynamic_type_internal (TYPE_FIELD_TYPE (resolved_type, i), | |
ee715b5a | 2449 | &pinfo, 0); |
df25ebbd JB |
2450 | gdb_assert (TYPE_FIELD_LOC_KIND (resolved_type, i) |
2451 | == FIELD_LOC_KIND_BITPOS); | |
2452 | ||
6908c509 JB |
2453 | new_bit_length = TYPE_FIELD_BITPOS (resolved_type, i); |
2454 | if (TYPE_FIELD_BITSIZE (resolved_type, i) != 0) | |
2455 | new_bit_length += TYPE_FIELD_BITSIZE (resolved_type, i); | |
2456 | else | |
2457 | new_bit_length += (TYPE_LENGTH (TYPE_FIELD_TYPE (resolved_type, i)) | |
2458 | * TARGET_CHAR_BIT); | |
2459 | ||
2460 | /* Normally, we would use the position and size of the last field | |
2461 | to determine the size of the enclosing structure. But GCC seems | |
2462 | to be encoding the position of some fields incorrectly when | |
2463 | the struct contains a dynamic field that is not placed last. | |
2464 | So we compute the struct size based on the field that has | |
2465 | the highest position + size - probably the best we can do. */ | |
2466 | if (new_bit_length > resolved_type_bit_length) | |
2467 | resolved_type_bit_length = new_bit_length; | |
012370f6 TT |
2468 | } |
2469 | ||
9920b434 BH |
2470 | /* The length of a type won't change for fortran, but it does for C and Ada. |
2471 | For fortran the size of dynamic fields might change over time but not the | |
2472 | type length of the structure. If we adapt it, we run into problems | |
2473 | when calculating the element offset for arrays of structs. */ | |
2474 | if (current_language->la_language != language_fortran) | |
2475 | TYPE_LENGTH (resolved_type) | |
2476 | = (resolved_type_bit_length + TARGET_CHAR_BIT - 1) / TARGET_CHAR_BIT; | |
6908c509 | 2477 | |
9e195661 PMR |
2478 | /* The Ada language uses this field as a cache for static fixed types: reset |
2479 | it as RESOLVED_TYPE must have its own static fixed type. */ | |
2480 | TYPE_TARGET_TYPE (resolved_type) = NULL; | |
2481 | ||
012370f6 TT |
2482 | return resolved_type; |
2483 | } | |
2484 | ||
d98b7a16 | 2485 | /* Worker for resolved_dynamic_type. */ |
80180f79 | 2486 | |
d98b7a16 | 2487 | static struct type * |
df25ebbd | 2488 | resolve_dynamic_type_internal (struct type *type, |
ee715b5a PMR |
2489 | struct property_addr_info *addr_stack, |
2490 | int top_level) | |
80180f79 SA |
2491 | { |
2492 | struct type *real_type = check_typedef (type); | |
6f8a3220 | 2493 | struct type *resolved_type = type; |
d9823cbb | 2494 | struct dynamic_prop *prop; |
3cdcd0ce | 2495 | CORE_ADDR value; |
80180f79 | 2496 | |
ee715b5a | 2497 | if (!is_dynamic_type_internal (real_type, top_level)) |
80180f79 SA |
2498 | return type; |
2499 | ||
5537b577 | 2500 | if (TYPE_CODE (type) == TYPE_CODE_TYPEDEF) |
6f8a3220 | 2501 | { |
cac9b138 JK |
2502 | resolved_type = copy_type (type); |
2503 | TYPE_TARGET_TYPE (resolved_type) | |
ee715b5a PMR |
2504 | = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (type), addr_stack, |
2505 | top_level); | |
5537b577 JK |
2506 | } |
2507 | else | |
2508 | { | |
2509 | /* Before trying to resolve TYPE, make sure it is not a stub. */ | |
2510 | type = real_type; | |
012370f6 | 2511 | |
5537b577 JK |
2512 | switch (TYPE_CODE (type)) |
2513 | { | |
e771e4be PMR |
2514 | case TYPE_CODE_REF: |
2515 | { | |
2516 | struct property_addr_info pinfo; | |
2517 | ||
2518 | pinfo.type = check_typedef (TYPE_TARGET_TYPE (type)); | |
c3345124 JB |
2519 | pinfo.valaddr = NULL; |
2520 | if (addr_stack->valaddr != NULL) | |
2521 | pinfo.addr = extract_typed_address (addr_stack->valaddr, type); | |
2522 | else | |
2523 | pinfo.addr = read_memory_typed_address (addr_stack->addr, type); | |
e771e4be PMR |
2524 | pinfo.next = addr_stack; |
2525 | ||
2526 | resolved_type = copy_type (type); | |
2527 | TYPE_TARGET_TYPE (resolved_type) | |
2528 | = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (type), | |
2529 | &pinfo, top_level); | |
2530 | break; | |
2531 | } | |
2532 | ||
216a7e6b AB |
2533 | case TYPE_CODE_STRING: |
2534 | /* Strings are very much like an array of characters, and can be | |
2535 | treated as one here. */ | |
5537b577 | 2536 | case TYPE_CODE_ARRAY: |
216a7e6b | 2537 | resolved_type = resolve_dynamic_array_or_string (type, addr_stack); |
5537b577 JK |
2538 | break; |
2539 | ||
2540 | case TYPE_CODE_RANGE: | |
df25ebbd | 2541 | resolved_type = resolve_dynamic_range (type, addr_stack); |
5537b577 JK |
2542 | break; |
2543 | ||
2544 | case TYPE_CODE_UNION: | |
df25ebbd | 2545 | resolved_type = resolve_dynamic_union (type, addr_stack); |
5537b577 JK |
2546 | break; |
2547 | ||
2548 | case TYPE_CODE_STRUCT: | |
df25ebbd | 2549 | resolved_type = resolve_dynamic_struct (type, addr_stack); |
5537b577 JK |
2550 | break; |
2551 | } | |
6f8a3220 | 2552 | } |
80180f79 | 2553 | |
3cdcd0ce JB |
2554 | /* Resolve data_location attribute. */ |
2555 | prop = TYPE_DATA_LOCATION (resolved_type); | |
63e43d3a PMR |
2556 | if (prop != NULL |
2557 | && dwarf2_evaluate_property (prop, NULL, addr_stack, &value)) | |
3cdcd0ce | 2558 | { |
d9823cbb KB |
2559 | TYPE_DYN_PROP_ADDR (prop) = value; |
2560 | TYPE_DYN_PROP_KIND (prop) = PROP_CONST; | |
3cdcd0ce | 2561 | } |
3cdcd0ce | 2562 | |
80180f79 SA |
2563 | return resolved_type; |
2564 | } | |
2565 | ||
d98b7a16 TT |
2566 | /* See gdbtypes.h */ |
2567 | ||
2568 | struct type * | |
c3345124 JB |
2569 | resolve_dynamic_type (struct type *type, const gdb_byte *valaddr, |
2570 | CORE_ADDR addr) | |
d98b7a16 | 2571 | { |
c3345124 JB |
2572 | struct property_addr_info pinfo |
2573 | = {check_typedef (type), valaddr, addr, NULL}; | |
df25ebbd | 2574 | |
ee715b5a | 2575 | return resolve_dynamic_type_internal (type, &pinfo, 1); |
d98b7a16 TT |
2576 | } |
2577 | ||
d9823cbb KB |
2578 | /* See gdbtypes.h */ |
2579 | ||
2580 | struct dynamic_prop * | |
2581 | get_dyn_prop (enum dynamic_prop_node_kind prop_kind, const struct type *type) | |
2582 | { | |
2583 | struct dynamic_prop_list *node = TYPE_DYN_PROP_LIST (type); | |
2584 | ||
2585 | while (node != NULL) | |
2586 | { | |
2587 | if (node->prop_kind == prop_kind) | |
283a9958 | 2588 | return &node->prop; |
d9823cbb KB |
2589 | node = node->next; |
2590 | } | |
2591 | return NULL; | |
2592 | } | |
2593 | ||
2594 | /* See gdbtypes.h */ | |
2595 | ||
2596 | void | |
2597 | add_dyn_prop (enum dynamic_prop_node_kind prop_kind, struct dynamic_prop prop, | |
50a82047 | 2598 | struct type *type) |
d9823cbb KB |
2599 | { |
2600 | struct dynamic_prop_list *temp; | |
2601 | ||
2602 | gdb_assert (TYPE_OBJFILE_OWNED (type)); | |
2603 | ||
50a82047 TT |
2604 | temp = XOBNEW (&TYPE_OBJFILE (type)->objfile_obstack, |
2605 | struct dynamic_prop_list); | |
d9823cbb | 2606 | temp->prop_kind = prop_kind; |
283a9958 | 2607 | temp->prop = prop; |
d9823cbb KB |
2608 | temp->next = TYPE_DYN_PROP_LIST (type); |
2609 | ||
2610 | TYPE_DYN_PROP_LIST (type) = temp; | |
2611 | } | |
2612 | ||
9920b434 BH |
2613 | /* Remove dynamic property from TYPE in case it exists. */ |
2614 | ||
2615 | void | |
2616 | remove_dyn_prop (enum dynamic_prop_node_kind prop_kind, | |
2617 | struct type *type) | |
2618 | { | |
2619 | struct dynamic_prop_list *prev_node, *curr_node; | |
2620 | ||
2621 | curr_node = TYPE_DYN_PROP_LIST (type); | |
2622 | prev_node = NULL; | |
2623 | ||
2624 | while (NULL != curr_node) | |
2625 | { | |
2626 | if (curr_node->prop_kind == prop_kind) | |
2627 | { | |
2628 | /* Update the linked list but don't free anything. | |
2629 | The property was allocated on objstack and it is not known | |
2630 | if we are on top of it. Nevertheless, everything is released | |
2631 | when the complete objstack is freed. */ | |
2632 | if (NULL == prev_node) | |
2633 | TYPE_DYN_PROP_LIST (type) = curr_node->next; | |
2634 | else | |
2635 | prev_node->next = curr_node->next; | |
2636 | ||
2637 | return; | |
2638 | } | |
2639 | ||
2640 | prev_node = curr_node; | |
2641 | curr_node = curr_node->next; | |
2642 | } | |
2643 | } | |
d9823cbb | 2644 | |
92163a10 JK |
2645 | /* Find the real type of TYPE. This function returns the real type, |
2646 | after removing all layers of typedefs, and completing opaque or stub | |
2647 | types. Completion changes the TYPE argument, but stripping of | |
2648 | typedefs does not. | |
2649 | ||
2650 | Instance flags (e.g. const/volatile) are preserved as typedefs are | |
2651 | stripped. If necessary a new qualified form of the underlying type | |
2652 | is created. | |
2653 | ||
2654 | NOTE: This will return a typedef if TYPE_TARGET_TYPE for the typedef has | |
2655 | not been computed and we're either in the middle of reading symbols, or | |
2656 | there was no name for the typedef in the debug info. | |
2657 | ||
9bc118a5 DE |
2658 | NOTE: Lookup of opaque types can throw errors for invalid symbol files. |
2659 | QUITs in the symbol reading code can also throw. | |
2660 | Thus this function can throw an exception. | |
2661 | ||
92163a10 JK |
2662 | If TYPE is a TYPE_CODE_TYPEDEF, its length is updated to the length of |
2663 | the target type. | |
c906108c SS |
2664 | |
2665 | If this is a stubbed struct (i.e. declared as struct foo *), see if | |
0963b4bd | 2666 | we can find a full definition in some other file. If so, copy this |
7ba81444 MS |
2667 | definition, so we can use it in future. There used to be a comment |
2668 | (but not any code) that if we don't find a full definition, we'd | |
2669 | set a flag so we don't spend time in the future checking the same | |
2670 | type. That would be a mistake, though--we might load in more | |
92163a10 | 2671 | symbols which contain a full definition for the type. */ |
c906108c SS |
2672 | |
2673 | struct type * | |
a02fd225 | 2674 | check_typedef (struct type *type) |
c906108c SS |
2675 | { |
2676 | struct type *orig_type = type; | |
92163a10 JK |
2677 | /* While we're removing typedefs, we don't want to lose qualifiers. |
2678 | E.g., const/volatile. */ | |
2679 | int instance_flags = TYPE_INSTANCE_FLAGS (type); | |
a02fd225 | 2680 | |
423c0af8 MS |
2681 | gdb_assert (type); |
2682 | ||
c906108c SS |
2683 | while (TYPE_CODE (type) == TYPE_CODE_TYPEDEF) |
2684 | { | |
2685 | if (!TYPE_TARGET_TYPE (type)) | |
2686 | { | |
0d5cff50 | 2687 | const char *name; |
c906108c SS |
2688 | struct symbol *sym; |
2689 | ||
2690 | /* It is dangerous to call lookup_symbol if we are currently | |
7ba81444 | 2691 | reading a symtab. Infinite recursion is one danger. */ |
c906108c | 2692 | if (currently_reading_symtab) |
92163a10 | 2693 | return make_qualified_type (type, instance_flags, NULL); |
c906108c | 2694 | |
a737d952 | 2695 | name = TYPE_NAME (type); |
e86ca25f TT |
2696 | /* FIXME: shouldn't we look in STRUCT_DOMAIN and/or |
2697 | VAR_DOMAIN as appropriate? */ | |
c906108c SS |
2698 | if (name == NULL) |
2699 | { | |
23136709 | 2700 | stub_noname_complaint (); |
92163a10 | 2701 | return make_qualified_type (type, instance_flags, NULL); |
c906108c | 2702 | } |
d12307c1 | 2703 | sym = lookup_symbol (name, 0, STRUCT_DOMAIN, 0).symbol; |
c906108c SS |
2704 | if (sym) |
2705 | TYPE_TARGET_TYPE (type) = SYMBOL_TYPE (sym); | |
7ba81444 | 2706 | else /* TYPE_CODE_UNDEF */ |
e9bb382b | 2707 | TYPE_TARGET_TYPE (type) = alloc_type_arch (get_type_arch (type)); |
c906108c SS |
2708 | } |
2709 | type = TYPE_TARGET_TYPE (type); | |
c906108c | 2710 | |
92163a10 JK |
2711 | /* Preserve the instance flags as we traverse down the typedef chain. |
2712 | ||
2713 | Handling address spaces/classes is nasty, what do we do if there's a | |
2714 | conflict? | |
2715 | E.g., what if an outer typedef marks the type as class_1 and an inner | |
2716 | typedef marks the type as class_2? | |
2717 | This is the wrong place to do such error checking. We leave it to | |
2718 | the code that created the typedef in the first place to flag the | |
2719 | error. We just pick the outer address space (akin to letting the | |
2720 | outer cast in a chain of casting win), instead of assuming | |
2721 | "it can't happen". */ | |
2722 | { | |
2723 | const int ALL_SPACES = (TYPE_INSTANCE_FLAG_CODE_SPACE | |
2724 | | TYPE_INSTANCE_FLAG_DATA_SPACE); | |
2725 | const int ALL_CLASSES = TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL; | |
2726 | int new_instance_flags = TYPE_INSTANCE_FLAGS (type); | |
2727 | ||
2728 | /* Treat code vs data spaces and address classes separately. */ | |
2729 | if ((instance_flags & ALL_SPACES) != 0) | |
2730 | new_instance_flags &= ~ALL_SPACES; | |
2731 | if ((instance_flags & ALL_CLASSES) != 0) | |
2732 | new_instance_flags &= ~ALL_CLASSES; | |
2733 | ||
2734 | instance_flags |= new_instance_flags; | |
2735 | } | |
2736 | } | |
a02fd225 | 2737 | |
7ba81444 MS |
2738 | /* If this is a struct/class/union with no fields, then check |
2739 | whether a full definition exists somewhere else. This is for | |
2740 | systems where a type definition with no fields is issued for such | |
2741 | types, instead of identifying them as stub types in the first | |
2742 | place. */ | |
c5aa993b | 2743 | |
7ba81444 MS |
2744 | if (TYPE_IS_OPAQUE (type) |
2745 | && opaque_type_resolution | |
2746 | && !currently_reading_symtab) | |
c906108c | 2747 | { |
a737d952 | 2748 | const char *name = TYPE_NAME (type); |
c5aa993b | 2749 | struct type *newtype; |
d8734c88 | 2750 | |
c906108c SS |
2751 | if (name == NULL) |
2752 | { | |
23136709 | 2753 | stub_noname_complaint (); |
92163a10 | 2754 | return make_qualified_type (type, instance_flags, NULL); |
c906108c SS |
2755 | } |
2756 | newtype = lookup_transparent_type (name); | |
ad766c0a | 2757 | |
c906108c | 2758 | if (newtype) |
ad766c0a | 2759 | { |
7ba81444 MS |
2760 | /* If the resolved type and the stub are in the same |
2761 | objfile, then replace the stub type with the real deal. | |
2762 | But if they're in separate objfiles, leave the stub | |
2763 | alone; we'll just look up the transparent type every time | |
2764 | we call check_typedef. We can't create pointers between | |
2765 | types allocated to different objfiles, since they may | |
2766 | have different lifetimes. Trying to copy NEWTYPE over to | |
2767 | TYPE's objfile is pointless, too, since you'll have to | |
2768 | move over any other types NEWTYPE refers to, which could | |
2769 | be an unbounded amount of stuff. */ | |
ad766c0a | 2770 | if (TYPE_OBJFILE (newtype) == TYPE_OBJFILE (type)) |
92163a10 JK |
2771 | type = make_qualified_type (newtype, |
2772 | TYPE_INSTANCE_FLAGS (type), | |
2773 | type); | |
ad766c0a JB |
2774 | else |
2775 | type = newtype; | |
2776 | } | |
c906108c | 2777 | } |
7ba81444 MS |
2778 | /* Otherwise, rely on the stub flag being set for opaque/stubbed |
2779 | types. */ | |
74a9bb82 | 2780 | else if (TYPE_STUB (type) && !currently_reading_symtab) |
c906108c | 2781 | { |
a737d952 | 2782 | const char *name = TYPE_NAME (type); |
e86ca25f TT |
2783 | /* FIXME: shouldn't we look in STRUCT_DOMAIN and/or VAR_DOMAIN |
2784 | as appropriate? */ | |
c906108c | 2785 | struct symbol *sym; |
d8734c88 | 2786 | |
c906108c SS |
2787 | if (name == NULL) |
2788 | { | |
23136709 | 2789 | stub_noname_complaint (); |
92163a10 | 2790 | return make_qualified_type (type, instance_flags, NULL); |
c906108c | 2791 | } |
d12307c1 | 2792 | sym = lookup_symbol (name, 0, STRUCT_DOMAIN, 0).symbol; |
c906108c | 2793 | if (sym) |
c26f2453 JB |
2794 | { |
2795 | /* Same as above for opaque types, we can replace the stub | |
92163a10 | 2796 | with the complete type only if they are in the same |
c26f2453 JB |
2797 | objfile. */ |
2798 | if (TYPE_OBJFILE (SYMBOL_TYPE(sym)) == TYPE_OBJFILE (type)) | |
92163a10 JK |
2799 | type = make_qualified_type (SYMBOL_TYPE (sym), |
2800 | TYPE_INSTANCE_FLAGS (type), | |
2801 | type); | |
c26f2453 JB |
2802 | else |
2803 | type = SYMBOL_TYPE (sym); | |
2804 | } | |
c906108c SS |
2805 | } |
2806 | ||
74a9bb82 | 2807 | if (TYPE_TARGET_STUB (type)) |
c906108c | 2808 | { |
c906108c SS |
2809 | struct type *target_type = check_typedef (TYPE_TARGET_TYPE (type)); |
2810 | ||
74a9bb82 | 2811 | if (TYPE_STUB (target_type) || TYPE_TARGET_STUB (target_type)) |
c5aa993b | 2812 | { |
73e2eb35 | 2813 | /* Nothing we can do. */ |
c5aa993b | 2814 | } |
c906108c SS |
2815 | else if (TYPE_CODE (type) == TYPE_CODE_RANGE) |
2816 | { | |
2817 | TYPE_LENGTH (type) = TYPE_LENGTH (target_type); | |
876cecd0 | 2818 | TYPE_TARGET_STUB (type) = 0; |
c906108c SS |
2819 | } |
2820 | } | |
92163a10 JK |
2821 | |
2822 | type = make_qualified_type (type, instance_flags, NULL); | |
2823 | ||
7ba81444 | 2824 | /* Cache TYPE_LENGTH for future use. */ |
c906108c | 2825 | TYPE_LENGTH (orig_type) = TYPE_LENGTH (type); |
92163a10 | 2826 | |
c906108c SS |
2827 | return type; |
2828 | } | |
2829 | ||
7ba81444 | 2830 | /* Parse a type expression in the string [P..P+LENGTH). If an error |
48319d1f | 2831 | occurs, silently return a void type. */ |
c91ecb25 | 2832 | |
b9362cc7 | 2833 | static struct type * |
48319d1f | 2834 | safe_parse_type (struct gdbarch *gdbarch, char *p, int length) |
c91ecb25 ND |
2835 | { |
2836 | struct ui_file *saved_gdb_stderr; | |
34365054 | 2837 | struct type *type = NULL; /* Initialize to keep gcc happy. */ |
c91ecb25 | 2838 | |
7ba81444 | 2839 | /* Suppress error messages. */ |
c91ecb25 | 2840 | saved_gdb_stderr = gdb_stderr; |
d7e74731 | 2841 | gdb_stderr = &null_stream; |
c91ecb25 | 2842 | |
7ba81444 | 2843 | /* Call parse_and_eval_type() without fear of longjmp()s. */ |
a70b8144 | 2844 | try |
8e7b59a5 KS |
2845 | { |
2846 | type = parse_and_eval_type (p, length); | |
2847 | } | |
230d2906 | 2848 | catch (const gdb_exception_error &except) |
492d29ea PA |
2849 | { |
2850 | type = builtin_type (gdbarch)->builtin_void; | |
2851 | } | |
c91ecb25 | 2852 | |
7ba81444 | 2853 | /* Stop suppressing error messages. */ |
c91ecb25 ND |
2854 | gdb_stderr = saved_gdb_stderr; |
2855 | ||
2856 | return type; | |
2857 | } | |
2858 | ||
c906108c SS |
2859 | /* Ugly hack to convert method stubs into method types. |
2860 | ||
7ba81444 MS |
2861 | He ain't kiddin'. This demangles the name of the method into a |
2862 | string including argument types, parses out each argument type, | |
2863 | generates a string casting a zero to that type, evaluates the | |
2864 | string, and stuffs the resulting type into an argtype vector!!! | |
2865 | Then it knows the type of the whole function (including argument | |
2866 | types for overloading), which info used to be in the stab's but was | |
2867 | removed to hack back the space required for them. */ | |
c906108c | 2868 | |
de17c821 | 2869 | static void |
fba45db2 | 2870 | check_stub_method (struct type *type, int method_id, int signature_id) |
c906108c | 2871 | { |
50810684 | 2872 | struct gdbarch *gdbarch = get_type_arch (type); |
c906108c SS |
2873 | struct fn_field *f; |
2874 | char *mangled_name = gdb_mangle_name (type, method_id, signature_id); | |
8de20a37 TT |
2875 | char *demangled_name = gdb_demangle (mangled_name, |
2876 | DMGL_PARAMS | DMGL_ANSI); | |
c906108c SS |
2877 | char *argtypetext, *p; |
2878 | int depth = 0, argcount = 1; | |
ad2f7632 | 2879 | struct field *argtypes; |
c906108c SS |
2880 | struct type *mtype; |
2881 | ||
2882 | /* Make sure we got back a function string that we can use. */ | |
2883 | if (demangled_name) | |
2884 | p = strchr (demangled_name, '('); | |
502dcf4e AC |
2885 | else |
2886 | p = NULL; | |
c906108c SS |
2887 | |
2888 | if (demangled_name == NULL || p == NULL) | |
7ba81444 MS |
2889 | error (_("Internal: Cannot demangle mangled name `%s'."), |
2890 | mangled_name); | |
c906108c SS |
2891 | |
2892 | /* Now, read in the parameters that define this type. */ | |
2893 | p += 1; | |
2894 | argtypetext = p; | |
2895 | while (*p) | |
2896 | { | |
070ad9f0 | 2897 | if (*p == '(' || *p == '<') |
c906108c SS |
2898 | { |
2899 | depth += 1; | |
2900 | } | |
070ad9f0 | 2901 | else if (*p == ')' || *p == '>') |
c906108c SS |
2902 | { |
2903 | depth -= 1; | |
2904 | } | |
2905 | else if (*p == ',' && depth == 0) | |
2906 | { | |
2907 | argcount += 1; | |
2908 | } | |
2909 | ||
2910 | p += 1; | |
2911 | } | |
2912 | ||
ad2f7632 | 2913 | /* If we read one argument and it was ``void'', don't count it. */ |
61012eef | 2914 | if (startswith (argtypetext, "(void)")) |
ad2f7632 | 2915 | argcount -= 1; |
c906108c | 2916 | |
ad2f7632 DJ |
2917 | /* We need one extra slot, for the THIS pointer. */ |
2918 | ||
2919 | argtypes = (struct field *) | |
2920 | TYPE_ALLOC (type, (argcount + 1) * sizeof (struct field)); | |
c906108c | 2921 | p = argtypetext; |
4a1970e4 DJ |
2922 | |
2923 | /* Add THIS pointer for non-static methods. */ | |
2924 | f = TYPE_FN_FIELDLIST1 (type, method_id); | |
2925 | if (TYPE_FN_FIELD_STATIC_P (f, signature_id)) | |
2926 | argcount = 0; | |
2927 | else | |
2928 | { | |
ad2f7632 | 2929 | argtypes[0].type = lookup_pointer_type (type); |
4a1970e4 DJ |
2930 | argcount = 1; |
2931 | } | |
c906108c | 2932 | |
0963b4bd | 2933 | if (*p != ')') /* () means no args, skip while. */ |
c906108c SS |
2934 | { |
2935 | depth = 0; | |
2936 | while (*p) | |
2937 | { | |
2938 | if (depth <= 0 && (*p == ',' || *p == ')')) | |
2939 | { | |
ad2f7632 DJ |
2940 | /* Avoid parsing of ellipsis, they will be handled below. |
2941 | Also avoid ``void'' as above. */ | |
2942 | if (strncmp (argtypetext, "...", p - argtypetext) != 0 | |
2943 | && strncmp (argtypetext, "void", p - argtypetext) != 0) | |
c906108c | 2944 | { |
ad2f7632 | 2945 | argtypes[argcount].type = |
48319d1f | 2946 | safe_parse_type (gdbarch, argtypetext, p - argtypetext); |
c906108c SS |
2947 | argcount += 1; |
2948 | } | |
2949 | argtypetext = p + 1; | |
2950 | } | |
2951 | ||
070ad9f0 | 2952 | if (*p == '(' || *p == '<') |
c906108c SS |
2953 | { |
2954 | depth += 1; | |
2955 | } | |
070ad9f0 | 2956 | else if (*p == ')' || *p == '>') |
c906108c SS |
2957 | { |
2958 | depth -= 1; | |
2959 | } | |
2960 | ||
2961 | p += 1; | |
2962 | } | |
2963 | } | |
2964 | ||
c906108c SS |
2965 | TYPE_FN_FIELD_PHYSNAME (f, signature_id) = mangled_name; |
2966 | ||
2967 | /* Now update the old "stub" type into a real type. */ | |
2968 | mtype = TYPE_FN_FIELD_TYPE (f, signature_id); | |
09e2d7c7 DE |
2969 | /* MTYPE may currently be a function (TYPE_CODE_FUNC). |
2970 | We want a method (TYPE_CODE_METHOD). */ | |
2971 | smash_to_method_type (mtype, type, TYPE_TARGET_TYPE (mtype), | |
2972 | argtypes, argcount, p[-2] == '.'); | |
876cecd0 | 2973 | TYPE_STUB (mtype) = 0; |
c906108c | 2974 | TYPE_FN_FIELD_STUB (f, signature_id) = 0; |
ad2f7632 DJ |
2975 | |
2976 | xfree (demangled_name); | |
c906108c SS |
2977 | } |
2978 | ||
7ba81444 MS |
2979 | /* This is the external interface to check_stub_method, above. This |
2980 | function unstubs all of the signatures for TYPE's METHOD_ID method | |
2981 | name. After calling this function TYPE_FN_FIELD_STUB will be | |
2982 | cleared for each signature and TYPE_FN_FIELDLIST_NAME will be | |
2983 | correct. | |
de17c821 DJ |
2984 | |
2985 | This function unfortunately can not die until stabs do. */ | |
2986 | ||
2987 | void | |
2988 | check_stub_method_group (struct type *type, int method_id) | |
2989 | { | |
2990 | int len = TYPE_FN_FIELDLIST_LENGTH (type, method_id); | |
2991 | struct fn_field *f = TYPE_FN_FIELDLIST1 (type, method_id); | |
de17c821 | 2992 | |
041be526 SM |
2993 | for (int j = 0; j < len; j++) |
2994 | { | |
2995 | if (TYPE_FN_FIELD_STUB (f, j)) | |
de17c821 | 2996 | check_stub_method (type, method_id, j); |
de17c821 DJ |
2997 | } |
2998 | } | |
2999 | ||
405feb71 | 3000 | /* Ensure it is in .rodata (if available) by working around GCC PR 44690. */ |
9655fd1a | 3001 | const struct cplus_struct_type cplus_struct_default = { }; |
c906108c SS |
3002 | |
3003 | void | |
fba45db2 | 3004 | allocate_cplus_struct_type (struct type *type) |
c906108c | 3005 | { |
b4ba55a1 JB |
3006 | if (HAVE_CPLUS_STRUCT (type)) |
3007 | /* Structure was already allocated. Nothing more to do. */ | |
3008 | return; | |
3009 | ||
3010 | TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_CPLUS_STUFF; | |
3011 | TYPE_RAW_CPLUS_SPECIFIC (type) = (struct cplus_struct_type *) | |
3012 | TYPE_ALLOC (type, sizeof (struct cplus_struct_type)); | |
3013 | *(TYPE_RAW_CPLUS_SPECIFIC (type)) = cplus_struct_default; | |
ae6ae975 | 3014 | set_type_vptr_fieldno (type, -1); |
c906108c SS |
3015 | } |
3016 | ||
b4ba55a1 JB |
3017 | const struct gnat_aux_type gnat_aux_default = |
3018 | { NULL }; | |
3019 | ||
3020 | /* Set the TYPE's type-specific kind to TYPE_SPECIFIC_GNAT_STUFF, | |
3021 | and allocate the associated gnat-specific data. The gnat-specific | |
3022 | data is also initialized to gnat_aux_default. */ | |
5212577a | 3023 | |
b4ba55a1 JB |
3024 | void |
3025 | allocate_gnat_aux_type (struct type *type) | |
3026 | { | |
3027 | TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_GNAT_STUFF; | |
3028 | TYPE_GNAT_SPECIFIC (type) = (struct gnat_aux_type *) | |
3029 | TYPE_ALLOC (type, sizeof (struct gnat_aux_type)); | |
3030 | *(TYPE_GNAT_SPECIFIC (type)) = gnat_aux_default; | |
3031 | } | |
3032 | ||
ae438bc5 UW |
3033 | /* Helper function to initialize a newly allocated type. Set type code |
3034 | to CODE and initialize the type-specific fields accordingly. */ | |
3035 | ||
3036 | static void | |
3037 | set_type_code (struct type *type, enum type_code code) | |
3038 | { | |
3039 | TYPE_CODE (type) = code; | |
3040 | ||
3041 | switch (code) | |
3042 | { | |
3043 | case TYPE_CODE_STRUCT: | |
3044 | case TYPE_CODE_UNION: | |
3045 | case TYPE_CODE_NAMESPACE: | |
3046 | INIT_CPLUS_SPECIFIC (type); | |
3047 | break; | |
3048 | case TYPE_CODE_FLT: | |
3049 | TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_FLOATFORMAT; | |
3050 | break; | |
3051 | case TYPE_CODE_FUNC: | |
3052 | INIT_FUNC_SPECIFIC (type); | |
3053 | break; | |
3054 | } | |
3055 | } | |
3056 | ||
19f392bc UW |
3057 | /* Helper function to verify floating-point format and size. |
3058 | BIT is the type size in bits; if BIT equals -1, the size is | |
3059 | determined by the floatformat. Returns size to be used. */ | |
3060 | ||
3061 | static int | |
0db7851f | 3062 | verify_floatformat (int bit, const struct floatformat *floatformat) |
19f392bc | 3063 | { |
0db7851f | 3064 | gdb_assert (floatformat != NULL); |
9b790ce7 | 3065 | |
19f392bc | 3066 | if (bit == -1) |
0db7851f | 3067 | bit = floatformat->totalsize; |
19f392bc | 3068 | |
0db7851f UW |
3069 | gdb_assert (bit >= 0); |
3070 | gdb_assert (bit >= floatformat->totalsize); | |
19f392bc UW |
3071 | |
3072 | return bit; | |
3073 | } | |
3074 | ||
0db7851f UW |
3075 | /* Return the floating-point format for a floating-point variable of |
3076 | type TYPE. */ | |
3077 | ||
3078 | const struct floatformat * | |
3079 | floatformat_from_type (const struct type *type) | |
3080 | { | |
3081 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_FLT); | |
3082 | gdb_assert (TYPE_FLOATFORMAT (type)); | |
3083 | return TYPE_FLOATFORMAT (type); | |
3084 | } | |
3085 | ||
c906108c SS |
3086 | /* Helper function to initialize the standard scalar types. |
3087 | ||
86f62fd7 TT |
3088 | If NAME is non-NULL, then it is used to initialize the type name. |
3089 | Note that NAME is not copied; it is required to have a lifetime at | |
3090 | least as long as OBJFILE. */ | |
c906108c SS |
3091 | |
3092 | struct type * | |
77b7c781 | 3093 | init_type (struct objfile *objfile, enum type_code code, int bit, |
19f392bc | 3094 | const char *name) |
c906108c | 3095 | { |
52f0bd74 | 3096 | struct type *type; |
c906108c SS |
3097 | |
3098 | type = alloc_type (objfile); | |
ae438bc5 | 3099 | set_type_code (type, code); |
77b7c781 UW |
3100 | gdb_assert ((bit % TARGET_CHAR_BIT) == 0); |
3101 | TYPE_LENGTH (type) = bit / TARGET_CHAR_BIT; | |
86f62fd7 | 3102 | TYPE_NAME (type) = name; |
c906108c | 3103 | |
c16abbde | 3104 | return type; |
c906108c | 3105 | } |
19f392bc | 3106 | |
46a4882b PA |
3107 | /* Allocate a TYPE_CODE_ERROR type structure associated with OBJFILE, |
3108 | to use with variables that have no debug info. NAME is the type | |
3109 | name. */ | |
3110 | ||
3111 | static struct type * | |
3112 | init_nodebug_var_type (struct objfile *objfile, const char *name) | |
3113 | { | |
3114 | return init_type (objfile, TYPE_CODE_ERROR, 0, name); | |
3115 | } | |
3116 | ||
19f392bc UW |
3117 | /* Allocate a TYPE_CODE_INT type structure associated with OBJFILE. |
3118 | BIT is the type size in bits. If UNSIGNED_P is non-zero, set | |
3119 | the type's TYPE_UNSIGNED flag. NAME is the type name. */ | |
3120 | ||
3121 | struct type * | |
3122 | init_integer_type (struct objfile *objfile, | |
3123 | int bit, int unsigned_p, const char *name) | |
3124 | { | |
3125 | struct type *t; | |
3126 | ||
77b7c781 | 3127 | t = init_type (objfile, TYPE_CODE_INT, bit, name); |
19f392bc UW |
3128 | if (unsigned_p) |
3129 | TYPE_UNSIGNED (t) = 1; | |
3130 | ||
3131 | return t; | |
3132 | } | |
3133 | ||
3134 | /* Allocate a TYPE_CODE_CHAR type structure associated with OBJFILE. | |
3135 | BIT is the type size in bits. If UNSIGNED_P is non-zero, set | |
3136 | the type's TYPE_UNSIGNED flag. NAME is the type name. */ | |
3137 | ||
3138 | struct type * | |
3139 | init_character_type (struct objfile *objfile, | |
3140 | int bit, int unsigned_p, const char *name) | |
3141 | { | |
3142 | struct type *t; | |
3143 | ||
77b7c781 | 3144 | t = init_type (objfile, TYPE_CODE_CHAR, bit, name); |
19f392bc UW |
3145 | if (unsigned_p) |
3146 | TYPE_UNSIGNED (t) = 1; | |
3147 | ||
3148 | return t; | |
3149 | } | |
3150 | ||
3151 | /* Allocate a TYPE_CODE_BOOL type structure associated with OBJFILE. | |
3152 | BIT is the type size in bits. If UNSIGNED_P is non-zero, set | |
3153 | the type's TYPE_UNSIGNED flag. NAME is the type name. */ | |
3154 | ||
3155 | struct type * | |
3156 | init_boolean_type (struct objfile *objfile, | |
3157 | int bit, int unsigned_p, const char *name) | |
3158 | { | |
3159 | struct type *t; | |
3160 | ||
77b7c781 | 3161 | t = init_type (objfile, TYPE_CODE_BOOL, bit, name); |
19f392bc UW |
3162 | if (unsigned_p) |
3163 | TYPE_UNSIGNED (t) = 1; | |
3164 | ||
3165 | return t; | |
3166 | } | |
3167 | ||
3168 | /* Allocate a TYPE_CODE_FLT type structure associated with OBJFILE. | |
3169 | BIT is the type size in bits; if BIT equals -1, the size is | |
3170 | determined by the floatformat. NAME is the type name. Set the | |
103a685e TT |
3171 | TYPE_FLOATFORMAT from FLOATFORMATS. BYTE_ORDER is the byte order |
3172 | to use. If it is BFD_ENDIAN_UNKNOWN (the default), then the byte | |
3173 | order of the objfile's architecture is used. */ | |
19f392bc UW |
3174 | |
3175 | struct type * | |
3176 | init_float_type (struct objfile *objfile, | |
3177 | int bit, const char *name, | |
103a685e TT |
3178 | const struct floatformat **floatformats, |
3179 | enum bfd_endian byte_order) | |
19f392bc | 3180 | { |
103a685e TT |
3181 | if (byte_order == BFD_ENDIAN_UNKNOWN) |
3182 | { | |
08feed99 | 3183 | struct gdbarch *gdbarch = objfile->arch (); |
103a685e TT |
3184 | byte_order = gdbarch_byte_order (gdbarch); |
3185 | } | |
3186 | const struct floatformat *fmt = floatformats[byte_order]; | |
19f392bc UW |
3187 | struct type *t; |
3188 | ||
0db7851f | 3189 | bit = verify_floatformat (bit, fmt); |
77b7c781 | 3190 | t = init_type (objfile, TYPE_CODE_FLT, bit, name); |
0db7851f | 3191 | TYPE_FLOATFORMAT (t) = fmt; |
19f392bc UW |
3192 | |
3193 | return t; | |
3194 | } | |
3195 | ||
3196 | /* Allocate a TYPE_CODE_DECFLOAT type structure associated with OBJFILE. | |
3197 | BIT is the type size in bits. NAME is the type name. */ | |
3198 | ||
3199 | struct type * | |
3200 | init_decfloat_type (struct objfile *objfile, int bit, const char *name) | |
3201 | { | |
3202 | struct type *t; | |
3203 | ||
77b7c781 | 3204 | t = init_type (objfile, TYPE_CODE_DECFLOAT, bit, name); |
19f392bc UW |
3205 | return t; |
3206 | } | |
3207 | ||
5b930b45 TT |
3208 | /* Allocate a TYPE_CODE_COMPLEX type structure. NAME is the type |
3209 | name. TARGET_TYPE is the component type. */ | |
19f392bc UW |
3210 | |
3211 | struct type * | |
5b930b45 | 3212 | init_complex_type (const char *name, struct type *target_type) |
19f392bc UW |
3213 | { |
3214 | struct type *t; | |
3215 | ||
5b930b45 TT |
3216 | gdb_assert (TYPE_CODE (target_type) == TYPE_CODE_INT |
3217 | || TYPE_CODE (target_type) == TYPE_CODE_FLT); | |
3218 | ||
3219 | if (TYPE_MAIN_TYPE (target_type)->flds_bnds.complex_type == nullptr) | |
3220 | { | |
3221 | if (name == nullptr) | |
3222 | { | |
3223 | char *new_name | |
3224 | = (char *) TYPE_ALLOC (target_type, | |
3225 | strlen (TYPE_NAME (target_type)) | |
3226 | + strlen ("_Complex ") + 1); | |
3227 | strcpy (new_name, "_Complex "); | |
3228 | strcat (new_name, TYPE_NAME (target_type)); | |
3229 | name = new_name; | |
3230 | } | |
3231 | ||
3232 | t = alloc_type_copy (target_type); | |
3233 | set_type_code (t, TYPE_CODE_COMPLEX); | |
3234 | TYPE_LENGTH (t) = 2 * TYPE_LENGTH (target_type); | |
3235 | TYPE_NAME (t) = name; | |
3236 | ||
3237 | TYPE_TARGET_TYPE (t) = target_type; | |
3238 | TYPE_MAIN_TYPE (target_type)->flds_bnds.complex_type = t; | |
3239 | } | |
3240 | ||
3241 | return TYPE_MAIN_TYPE (target_type)->flds_bnds.complex_type; | |
19f392bc UW |
3242 | } |
3243 | ||
3244 | /* Allocate a TYPE_CODE_PTR type structure associated with OBJFILE. | |
3245 | BIT is the pointer type size in bits. NAME is the type name. | |
3246 | TARGET_TYPE is the pointer target type. Always sets the pointer type's | |
3247 | TYPE_UNSIGNED flag. */ | |
3248 | ||
3249 | struct type * | |
3250 | init_pointer_type (struct objfile *objfile, | |
3251 | int bit, const char *name, struct type *target_type) | |
3252 | { | |
3253 | struct type *t; | |
3254 | ||
77b7c781 | 3255 | t = init_type (objfile, TYPE_CODE_PTR, bit, name); |
19f392bc UW |
3256 | TYPE_TARGET_TYPE (t) = target_type; |
3257 | TYPE_UNSIGNED (t) = 1; | |
3258 | return t; | |
3259 | } | |
3260 | ||
2b4424c3 TT |
3261 | /* See gdbtypes.h. */ |
3262 | ||
3263 | unsigned | |
3264 | type_raw_align (struct type *type) | |
3265 | { | |
3266 | if (type->align_log2 != 0) | |
3267 | return 1 << (type->align_log2 - 1); | |
3268 | return 0; | |
3269 | } | |
3270 | ||
3271 | /* See gdbtypes.h. */ | |
3272 | ||
3273 | unsigned | |
3274 | type_align (struct type *type) | |
3275 | { | |
5561fc30 | 3276 | /* Check alignment provided in the debug information. */ |
2b4424c3 TT |
3277 | unsigned raw_align = type_raw_align (type); |
3278 | if (raw_align != 0) | |
3279 | return raw_align; | |
3280 | ||
5561fc30 AB |
3281 | /* Allow the architecture to provide an alignment. */ |
3282 | struct gdbarch *arch = get_type_arch (type); | |
3283 | ULONGEST align = gdbarch_type_align (arch, type); | |
3284 | if (align != 0) | |
3285 | return align; | |
3286 | ||
2b4424c3 TT |
3287 | switch (TYPE_CODE (type)) |
3288 | { | |
3289 | case TYPE_CODE_PTR: | |
3290 | case TYPE_CODE_FUNC: | |
3291 | case TYPE_CODE_FLAGS: | |
3292 | case TYPE_CODE_INT: | |
75ba10dc | 3293 | case TYPE_CODE_RANGE: |
2b4424c3 TT |
3294 | case TYPE_CODE_FLT: |
3295 | case TYPE_CODE_ENUM: | |
3296 | case TYPE_CODE_REF: | |
3297 | case TYPE_CODE_RVALUE_REF: | |
3298 | case TYPE_CODE_CHAR: | |
3299 | case TYPE_CODE_BOOL: | |
3300 | case TYPE_CODE_DECFLOAT: | |
70cd633e AB |
3301 | case TYPE_CODE_METHODPTR: |
3302 | case TYPE_CODE_MEMBERPTR: | |
5561fc30 | 3303 | align = type_length_units (check_typedef (type)); |
2b4424c3 TT |
3304 | break; |
3305 | ||
3306 | case TYPE_CODE_ARRAY: | |
3307 | case TYPE_CODE_COMPLEX: | |
3308 | case TYPE_CODE_TYPEDEF: | |
3309 | align = type_align (TYPE_TARGET_TYPE (type)); | |
3310 | break; | |
3311 | ||
3312 | case TYPE_CODE_STRUCT: | |
3313 | case TYPE_CODE_UNION: | |
3314 | { | |
41077b66 | 3315 | int number_of_non_static_fields = 0; |
2b4424c3 TT |
3316 | for (unsigned i = 0; i < TYPE_NFIELDS (type); ++i) |
3317 | { | |
bf9a735e | 3318 | if (!field_is_static (&TYPE_FIELD (type, i))) |
2b4424c3 | 3319 | { |
41077b66 | 3320 | number_of_non_static_fields++; |
bf9a735e AB |
3321 | ULONGEST f_align = type_align (TYPE_FIELD_TYPE (type, i)); |
3322 | if (f_align == 0) | |
3323 | { | |
3324 | /* Don't pretend we know something we don't. */ | |
3325 | align = 0; | |
3326 | break; | |
3327 | } | |
3328 | if (f_align > align) | |
3329 | align = f_align; | |
2b4424c3 | 3330 | } |
2b4424c3 | 3331 | } |
41077b66 AB |
3332 | /* A struct with no fields, or with only static fields has an |
3333 | alignment of 1. */ | |
3334 | if (number_of_non_static_fields == 0) | |
3335 | align = 1; | |
2b4424c3 TT |
3336 | } |
3337 | break; | |
3338 | ||
3339 | case TYPE_CODE_SET: | |
2b4424c3 TT |
3340 | case TYPE_CODE_STRING: |
3341 | /* Not sure what to do here, and these can't appear in C or C++ | |
3342 | anyway. */ | |
3343 | break; | |
3344 | ||
2b4424c3 TT |
3345 | case TYPE_CODE_VOID: |
3346 | align = 1; | |
3347 | break; | |
3348 | ||
3349 | case TYPE_CODE_ERROR: | |
3350 | case TYPE_CODE_METHOD: | |
3351 | default: | |
3352 | break; | |
3353 | } | |
3354 | ||
3355 | if ((align & (align - 1)) != 0) | |
3356 | { | |
3357 | /* Not a power of 2, so pass. */ | |
3358 | align = 0; | |
3359 | } | |
3360 | ||
3361 | return align; | |
3362 | } | |
3363 | ||
3364 | /* See gdbtypes.h. */ | |
3365 | ||
3366 | bool | |
3367 | set_type_align (struct type *type, ULONGEST align) | |
3368 | { | |
3369 | /* Must be a power of 2. Zero is ok. */ | |
3370 | gdb_assert ((align & (align - 1)) == 0); | |
3371 | ||
3372 | unsigned result = 0; | |
3373 | while (align != 0) | |
3374 | { | |
3375 | ++result; | |
3376 | align >>= 1; | |
3377 | } | |
3378 | ||
3379 | if (result >= (1 << TYPE_ALIGN_BITS)) | |
3380 | return false; | |
3381 | ||
3382 | type->align_log2 = result; | |
3383 | return true; | |
3384 | } | |
3385 | ||
5212577a DE |
3386 | \f |
3387 | /* Queries on types. */ | |
c906108c | 3388 | |
c906108c | 3389 | int |
fba45db2 | 3390 | can_dereference (struct type *t) |
c906108c | 3391 | { |
7ba81444 MS |
3392 | /* FIXME: Should we return true for references as well as |
3393 | pointers? */ | |
f168693b | 3394 | t = check_typedef (t); |
c906108c SS |
3395 | return |
3396 | (t != NULL | |
3397 | && TYPE_CODE (t) == TYPE_CODE_PTR | |
3398 | && TYPE_CODE (TYPE_TARGET_TYPE (t)) != TYPE_CODE_VOID); | |
3399 | } | |
3400 | ||
adf40b2e | 3401 | int |
fba45db2 | 3402 | is_integral_type (struct type *t) |
adf40b2e | 3403 | { |
f168693b | 3404 | t = check_typedef (t); |
adf40b2e JM |
3405 | return |
3406 | ((t != NULL) | |
d4f3574e SS |
3407 | && ((TYPE_CODE (t) == TYPE_CODE_INT) |
3408 | || (TYPE_CODE (t) == TYPE_CODE_ENUM) | |
4f2aea11 | 3409 | || (TYPE_CODE (t) == TYPE_CODE_FLAGS) |
d4f3574e SS |
3410 | || (TYPE_CODE (t) == TYPE_CODE_CHAR) |
3411 | || (TYPE_CODE (t) == TYPE_CODE_RANGE) | |
3412 | || (TYPE_CODE (t) == TYPE_CODE_BOOL))); | |
adf40b2e JM |
3413 | } |
3414 | ||
70100014 UW |
3415 | int |
3416 | is_floating_type (struct type *t) | |
3417 | { | |
3418 | t = check_typedef (t); | |
3419 | return | |
3420 | ((t != NULL) | |
3421 | && ((TYPE_CODE (t) == TYPE_CODE_FLT) | |
3422 | || (TYPE_CODE (t) == TYPE_CODE_DECFLOAT))); | |
3423 | } | |
3424 | ||
e09342b5 TJB |
3425 | /* Return true if TYPE is scalar. */ |
3426 | ||
220475ed | 3427 | int |
e09342b5 TJB |
3428 | is_scalar_type (struct type *type) |
3429 | { | |
f168693b | 3430 | type = check_typedef (type); |
e09342b5 TJB |
3431 | |
3432 | switch (TYPE_CODE (type)) | |
3433 | { | |
3434 | case TYPE_CODE_ARRAY: | |
3435 | case TYPE_CODE_STRUCT: | |
3436 | case TYPE_CODE_UNION: | |
3437 | case TYPE_CODE_SET: | |
3438 | case TYPE_CODE_STRING: | |
e09342b5 TJB |
3439 | return 0; |
3440 | default: | |
3441 | return 1; | |
3442 | } | |
3443 | } | |
3444 | ||
3445 | /* Return true if T is scalar, or a composite type which in practice has | |
90e4670f TJB |
3446 | the memory layout of a scalar type. E.g., an array or struct with only |
3447 | one scalar element inside it, or a union with only scalar elements. */ | |
e09342b5 TJB |
3448 | |
3449 | int | |
3450 | is_scalar_type_recursive (struct type *t) | |
3451 | { | |
f168693b | 3452 | t = check_typedef (t); |
e09342b5 TJB |
3453 | |
3454 | if (is_scalar_type (t)) | |
3455 | return 1; | |
3456 | /* Are we dealing with an array or string of known dimensions? */ | |
3457 | else if ((TYPE_CODE (t) == TYPE_CODE_ARRAY | |
3458 | || TYPE_CODE (t) == TYPE_CODE_STRING) && TYPE_NFIELDS (t) == 1 | |
3459 | && TYPE_CODE (TYPE_INDEX_TYPE (t)) == TYPE_CODE_RANGE) | |
3460 | { | |
3461 | LONGEST low_bound, high_bound; | |
3462 | struct type *elt_type = check_typedef (TYPE_TARGET_TYPE (t)); | |
3463 | ||
3464 | get_discrete_bounds (TYPE_INDEX_TYPE (t), &low_bound, &high_bound); | |
3465 | ||
3466 | return high_bound == low_bound && is_scalar_type_recursive (elt_type); | |
3467 | } | |
3468 | /* Are we dealing with a struct with one element? */ | |
3469 | else if (TYPE_CODE (t) == TYPE_CODE_STRUCT && TYPE_NFIELDS (t) == 1) | |
3470 | return is_scalar_type_recursive (TYPE_FIELD_TYPE (t, 0)); | |
3471 | else if (TYPE_CODE (t) == TYPE_CODE_UNION) | |
3472 | { | |
3473 | int i, n = TYPE_NFIELDS (t); | |
3474 | ||
3475 | /* If all elements of the union are scalar, then the union is scalar. */ | |
3476 | for (i = 0; i < n; i++) | |
3477 | if (!is_scalar_type_recursive (TYPE_FIELD_TYPE (t, i))) | |
3478 | return 0; | |
3479 | ||
3480 | return 1; | |
3481 | } | |
3482 | ||
3483 | return 0; | |
3484 | } | |
3485 | ||
6c659fc2 SC |
3486 | /* Return true is T is a class or a union. False otherwise. */ |
3487 | ||
3488 | int | |
3489 | class_or_union_p (const struct type *t) | |
3490 | { | |
3491 | return (TYPE_CODE (t) == TYPE_CODE_STRUCT | |
3492 | || TYPE_CODE (t) == TYPE_CODE_UNION); | |
3493 | } | |
3494 | ||
4e8f195d TT |
3495 | /* A helper function which returns true if types A and B represent the |
3496 | "same" class type. This is true if the types have the same main | |
3497 | type, or the same name. */ | |
3498 | ||
3499 | int | |
3500 | class_types_same_p (const struct type *a, const struct type *b) | |
3501 | { | |
3502 | return (TYPE_MAIN_TYPE (a) == TYPE_MAIN_TYPE (b) | |
3503 | || (TYPE_NAME (a) && TYPE_NAME (b) | |
3504 | && !strcmp (TYPE_NAME (a), TYPE_NAME (b)))); | |
3505 | } | |
3506 | ||
a9d5ef47 SW |
3507 | /* If BASE is an ancestor of DCLASS return the distance between them. |
3508 | otherwise return -1; | |
3509 | eg: | |
3510 | ||
3511 | class A {}; | |
3512 | class B: public A {}; | |
3513 | class C: public B {}; | |
3514 | class D: C {}; | |
3515 | ||
3516 | distance_to_ancestor (A, A, 0) = 0 | |
3517 | distance_to_ancestor (A, B, 0) = 1 | |
3518 | distance_to_ancestor (A, C, 0) = 2 | |
3519 | distance_to_ancestor (A, D, 0) = 3 | |
3520 | ||
3521 | If PUBLIC is 1 then only public ancestors are considered, | |
3522 | and the function returns the distance only if BASE is a public ancestor | |
3523 | of DCLASS. | |
3524 | Eg: | |
3525 | ||
0963b4bd | 3526 | distance_to_ancestor (A, D, 1) = -1. */ |
c906108c | 3527 | |
0526b37a | 3528 | static int |
fe978cb0 | 3529 | distance_to_ancestor (struct type *base, struct type *dclass, int is_public) |
c906108c SS |
3530 | { |
3531 | int i; | |
a9d5ef47 | 3532 | int d; |
c5aa993b | 3533 | |
f168693b SM |
3534 | base = check_typedef (base); |
3535 | dclass = check_typedef (dclass); | |
c906108c | 3536 | |
4e8f195d | 3537 | if (class_types_same_p (base, dclass)) |
a9d5ef47 | 3538 | return 0; |
c906108c SS |
3539 | |
3540 | for (i = 0; i < TYPE_N_BASECLASSES (dclass); i++) | |
4e8f195d | 3541 | { |
fe978cb0 | 3542 | if (is_public && ! BASETYPE_VIA_PUBLIC (dclass, i)) |
0526b37a SW |
3543 | continue; |
3544 | ||
fe978cb0 | 3545 | d = distance_to_ancestor (base, TYPE_BASECLASS (dclass, i), is_public); |
a9d5ef47 SW |
3546 | if (d >= 0) |
3547 | return 1 + d; | |
4e8f195d | 3548 | } |
c906108c | 3549 | |
a9d5ef47 | 3550 | return -1; |
c906108c | 3551 | } |
4e8f195d | 3552 | |
0526b37a SW |
3553 | /* Check whether BASE is an ancestor or base class or DCLASS |
3554 | Return 1 if so, and 0 if not. | |
3555 | Note: If BASE and DCLASS are of the same type, this function | |
3556 | will return 1. So for some class A, is_ancestor (A, A) will | |
3557 | return 1. */ | |
3558 | ||
3559 | int | |
3560 | is_ancestor (struct type *base, struct type *dclass) | |
3561 | { | |
a9d5ef47 | 3562 | return distance_to_ancestor (base, dclass, 0) >= 0; |
0526b37a SW |
3563 | } |
3564 | ||
4e8f195d TT |
3565 | /* Like is_ancestor, but only returns true when BASE is a public |
3566 | ancestor of DCLASS. */ | |
3567 | ||
3568 | int | |
3569 | is_public_ancestor (struct type *base, struct type *dclass) | |
3570 | { | |
a9d5ef47 | 3571 | return distance_to_ancestor (base, dclass, 1) >= 0; |
4e8f195d TT |
3572 | } |
3573 | ||
3574 | /* A helper function for is_unique_ancestor. */ | |
3575 | ||
3576 | static int | |
3577 | is_unique_ancestor_worker (struct type *base, struct type *dclass, | |
3578 | int *offset, | |
8af8e3bc PA |
3579 | const gdb_byte *valaddr, int embedded_offset, |
3580 | CORE_ADDR address, struct value *val) | |
4e8f195d TT |
3581 | { |
3582 | int i, count = 0; | |
3583 | ||
f168693b SM |
3584 | base = check_typedef (base); |
3585 | dclass = check_typedef (dclass); | |
4e8f195d TT |
3586 | |
3587 | for (i = 0; i < TYPE_N_BASECLASSES (dclass) && count < 2; ++i) | |
3588 | { | |
8af8e3bc PA |
3589 | struct type *iter; |
3590 | int this_offset; | |
4e8f195d | 3591 | |
8af8e3bc PA |
3592 | iter = check_typedef (TYPE_BASECLASS (dclass, i)); |
3593 | ||
3594 | this_offset = baseclass_offset (dclass, i, valaddr, embedded_offset, | |
3595 | address, val); | |
4e8f195d TT |
3596 | |
3597 | if (class_types_same_p (base, iter)) | |
3598 | { | |
3599 | /* If this is the first subclass, set *OFFSET and set count | |
3600 | to 1. Otherwise, if this is at the same offset as | |
3601 | previous instances, do nothing. Otherwise, increment | |
3602 | count. */ | |
3603 | if (*offset == -1) | |
3604 | { | |
3605 | *offset = this_offset; | |
3606 | count = 1; | |
3607 | } | |
3608 | else if (this_offset == *offset) | |
3609 | { | |
3610 | /* Nothing. */ | |
3611 | } | |
3612 | else | |
3613 | ++count; | |
3614 | } | |
3615 | else | |
3616 | count += is_unique_ancestor_worker (base, iter, offset, | |
8af8e3bc PA |
3617 | valaddr, |
3618 | embedded_offset + this_offset, | |
3619 | address, val); | |
4e8f195d TT |
3620 | } |
3621 | ||
3622 | return count; | |
3623 | } | |
3624 | ||
3625 | /* Like is_ancestor, but only returns true if BASE is a unique base | |
3626 | class of the type of VAL. */ | |
3627 | ||
3628 | int | |
3629 | is_unique_ancestor (struct type *base, struct value *val) | |
3630 | { | |
3631 | int offset = -1; | |
3632 | ||
3633 | return is_unique_ancestor_worker (base, value_type (val), &offset, | |
8af8e3bc PA |
3634 | value_contents_for_printing (val), |
3635 | value_embedded_offset (val), | |
3636 | value_address (val), val) == 1; | |
4e8f195d TT |
3637 | } |
3638 | ||
7ab4a236 TT |
3639 | /* See gdbtypes.h. */ |
3640 | ||
3641 | enum bfd_endian | |
3642 | type_byte_order (const struct type *type) | |
3643 | { | |
3644 | bfd_endian byteorder = gdbarch_byte_order (get_type_arch (type)); | |
3645 | if (TYPE_ENDIANITY_NOT_DEFAULT (type)) | |
3646 | { | |
3647 | if (byteorder == BFD_ENDIAN_BIG) | |
3648 | return BFD_ENDIAN_LITTLE; | |
3649 | else | |
3650 | { | |
3651 | gdb_assert (byteorder == BFD_ENDIAN_LITTLE); | |
3652 | return BFD_ENDIAN_BIG; | |
3653 | } | |
3654 | } | |
3655 | ||
3656 | return byteorder; | |
3657 | } | |
3658 | ||
c906108c | 3659 | \f |
5212577a | 3660 | /* Overload resolution. */ |
c906108c | 3661 | |
6403aeea SW |
3662 | /* Return the sum of the rank of A with the rank of B. */ |
3663 | ||
3664 | struct rank | |
3665 | sum_ranks (struct rank a, struct rank b) | |
3666 | { | |
3667 | struct rank c; | |
3668 | c.rank = a.rank + b.rank; | |
a9d5ef47 | 3669 | c.subrank = a.subrank + b.subrank; |
6403aeea SW |
3670 | return c; |
3671 | } | |
3672 | ||
3673 | /* Compare rank A and B and return: | |
3674 | 0 if a = b | |
3675 | 1 if a is better than b | |
3676 | -1 if b is better than a. */ | |
3677 | ||
3678 | int | |
3679 | compare_ranks (struct rank a, struct rank b) | |
3680 | { | |
3681 | if (a.rank == b.rank) | |
a9d5ef47 SW |
3682 | { |
3683 | if (a.subrank == b.subrank) | |
3684 | return 0; | |
3685 | if (a.subrank < b.subrank) | |
3686 | return 1; | |
3687 | if (a.subrank > b.subrank) | |
3688 | return -1; | |
3689 | } | |
6403aeea SW |
3690 | |
3691 | if (a.rank < b.rank) | |
3692 | return 1; | |
3693 | ||
0963b4bd | 3694 | /* a.rank > b.rank */ |
6403aeea SW |
3695 | return -1; |
3696 | } | |
c5aa993b | 3697 | |
0963b4bd | 3698 | /* Functions for overload resolution begin here. */ |
c906108c SS |
3699 | |
3700 | /* Compare two badness vectors A and B and return the result. | |
7ba81444 MS |
3701 | 0 => A and B are identical |
3702 | 1 => A and B are incomparable | |
3703 | 2 => A is better than B | |
3704 | 3 => A is worse than B */ | |
c906108c SS |
3705 | |
3706 | int | |
82ceee50 | 3707 | compare_badness (const badness_vector &a, const badness_vector &b) |
c906108c SS |
3708 | { |
3709 | int i; | |
3710 | int tmp; | |
c5aa993b JM |
3711 | short found_pos = 0; /* any positives in c? */ |
3712 | short found_neg = 0; /* any negatives in c? */ | |
3713 | ||
82ceee50 PA |
3714 | /* differing sizes => incomparable */ |
3715 | if (a.size () != b.size ()) | |
c906108c SS |
3716 | return 1; |
3717 | ||
c5aa993b | 3718 | /* Subtract b from a */ |
82ceee50 | 3719 | for (i = 0; i < a.size (); i++) |
c906108c | 3720 | { |
82ceee50 | 3721 | tmp = compare_ranks (b[i], a[i]); |
c906108c | 3722 | if (tmp > 0) |
c5aa993b | 3723 | found_pos = 1; |
c906108c | 3724 | else if (tmp < 0) |
c5aa993b | 3725 | found_neg = 1; |
c906108c SS |
3726 | } |
3727 | ||
3728 | if (found_pos) | |
3729 | { | |
3730 | if (found_neg) | |
c5aa993b | 3731 | return 1; /* incomparable */ |
c906108c | 3732 | else |
c5aa993b | 3733 | return 3; /* A > B */ |
c906108c | 3734 | } |
c5aa993b JM |
3735 | else |
3736 | /* no positives */ | |
c906108c SS |
3737 | { |
3738 | if (found_neg) | |
c5aa993b | 3739 | return 2; /* A < B */ |
c906108c | 3740 | else |
c5aa993b | 3741 | return 0; /* A == B */ |
c906108c SS |
3742 | } |
3743 | } | |
3744 | ||
6b1747cd | 3745 | /* Rank a function by comparing its parameter types (PARMS), to the |
82ceee50 PA |
3746 | types of an argument list (ARGS). Return the badness vector. This |
3747 | has ARGS.size() + 1 entries. */ | |
c906108c | 3748 | |
82ceee50 | 3749 | badness_vector |
6b1747cd PA |
3750 | rank_function (gdb::array_view<type *> parms, |
3751 | gdb::array_view<value *> args) | |
c906108c | 3752 | { |
82ceee50 PA |
3753 | /* add 1 for the length-match rank. */ |
3754 | badness_vector bv; | |
3755 | bv.reserve (1 + args.size ()); | |
c906108c SS |
3756 | |
3757 | /* First compare the lengths of the supplied lists. | |
7ba81444 | 3758 | If there is a mismatch, set it to a high value. */ |
c5aa993b | 3759 | |
c906108c | 3760 | /* pai/1997-06-03 FIXME: when we have debug info about default |
7ba81444 MS |
3761 | arguments and ellipsis parameter lists, we should consider those |
3762 | and rank the length-match more finely. */ | |
c906108c | 3763 | |
82ceee50 PA |
3764 | bv.push_back ((args.size () != parms.size ()) |
3765 | ? LENGTH_MISMATCH_BADNESS | |
3766 | : EXACT_MATCH_BADNESS); | |
c906108c | 3767 | |
0963b4bd | 3768 | /* Now rank all the parameters of the candidate function. */ |
82ceee50 PA |
3769 | size_t min_len = std::min (parms.size (), args.size ()); |
3770 | ||
3771 | for (size_t i = 0; i < min_len; i++) | |
3772 | bv.push_back (rank_one_type (parms[i], value_type (args[i]), | |
3773 | args[i])); | |
c906108c | 3774 | |
0963b4bd | 3775 | /* If more arguments than parameters, add dummy entries. */ |
82ceee50 PA |
3776 | for (size_t i = min_len; i < args.size (); i++) |
3777 | bv.push_back (TOO_FEW_PARAMS_BADNESS); | |
c906108c SS |
3778 | |
3779 | return bv; | |
3780 | } | |
3781 | ||
973ccf8b DJ |
3782 | /* Compare the names of two integer types, assuming that any sign |
3783 | qualifiers have been checked already. We do it this way because | |
3784 | there may be an "int" in the name of one of the types. */ | |
3785 | ||
3786 | static int | |
3787 | integer_types_same_name_p (const char *first, const char *second) | |
3788 | { | |
3789 | int first_p, second_p; | |
3790 | ||
7ba81444 MS |
3791 | /* If both are shorts, return 1; if neither is a short, keep |
3792 | checking. */ | |
973ccf8b DJ |
3793 | first_p = (strstr (first, "short") != NULL); |
3794 | second_p = (strstr (second, "short") != NULL); | |
3795 | if (first_p && second_p) | |
3796 | return 1; | |
3797 | if (first_p || second_p) | |
3798 | return 0; | |
3799 | ||
3800 | /* Likewise for long. */ | |
3801 | first_p = (strstr (first, "long") != NULL); | |
3802 | second_p = (strstr (second, "long") != NULL); | |
3803 | if (first_p && second_p) | |
3804 | return 1; | |
3805 | if (first_p || second_p) | |
3806 | return 0; | |
3807 | ||
3808 | /* Likewise for char. */ | |
3809 | first_p = (strstr (first, "char") != NULL); | |
3810 | second_p = (strstr (second, "char") != NULL); | |
3811 | if (first_p && second_p) | |
3812 | return 1; | |
3813 | if (first_p || second_p) | |
3814 | return 0; | |
3815 | ||
3816 | /* They must both be ints. */ | |
3817 | return 1; | |
3818 | } | |
3819 | ||
894882e3 TT |
3820 | /* Compares type A to type B. Returns true if they represent the same |
3821 | type, false otherwise. */ | |
7062b0a0 | 3822 | |
894882e3 | 3823 | bool |
7062b0a0 SW |
3824 | types_equal (struct type *a, struct type *b) |
3825 | { | |
3826 | /* Identical type pointers. */ | |
3827 | /* However, this still doesn't catch all cases of same type for b | |
3828 | and a. The reason is that builtin types are different from | |
3829 | the same ones constructed from the object. */ | |
3830 | if (a == b) | |
894882e3 | 3831 | return true; |
7062b0a0 SW |
3832 | |
3833 | /* Resolve typedefs */ | |
3834 | if (TYPE_CODE (a) == TYPE_CODE_TYPEDEF) | |
3835 | a = check_typedef (a); | |
3836 | if (TYPE_CODE (b) == TYPE_CODE_TYPEDEF) | |
3837 | b = check_typedef (b); | |
3838 | ||
3839 | /* If after resolving typedefs a and b are not of the same type | |
3840 | code then they are not equal. */ | |
3841 | if (TYPE_CODE (a) != TYPE_CODE (b)) | |
894882e3 | 3842 | return false; |
7062b0a0 SW |
3843 | |
3844 | /* If a and b are both pointers types or both reference types then | |
3845 | they are equal of the same type iff the objects they refer to are | |
3846 | of the same type. */ | |
3847 | if (TYPE_CODE (a) == TYPE_CODE_PTR | |
3848 | || TYPE_CODE (a) == TYPE_CODE_REF) | |
3849 | return types_equal (TYPE_TARGET_TYPE (a), | |
3850 | TYPE_TARGET_TYPE (b)); | |
3851 | ||
0963b4bd | 3852 | /* Well, damnit, if the names are exactly the same, I'll say they |
7062b0a0 SW |
3853 | are exactly the same. This happens when we generate method |
3854 | stubs. The types won't point to the same address, but they | |
0963b4bd | 3855 | really are the same. */ |
7062b0a0 SW |
3856 | |
3857 | if (TYPE_NAME (a) && TYPE_NAME (b) | |
3858 | && strcmp (TYPE_NAME (a), TYPE_NAME (b)) == 0) | |
894882e3 | 3859 | return true; |
7062b0a0 SW |
3860 | |
3861 | /* Check if identical after resolving typedefs. */ | |
3862 | if (a == b) | |
894882e3 | 3863 | return true; |
7062b0a0 | 3864 | |
9ce98649 TT |
3865 | /* Two function types are equal if their argument and return types |
3866 | are equal. */ | |
3867 | if (TYPE_CODE (a) == TYPE_CODE_FUNC) | |
3868 | { | |
3869 | int i; | |
3870 | ||
3871 | if (TYPE_NFIELDS (a) != TYPE_NFIELDS (b)) | |
894882e3 | 3872 | return false; |
9ce98649 TT |
3873 | |
3874 | if (!types_equal (TYPE_TARGET_TYPE (a), TYPE_TARGET_TYPE (b))) | |
894882e3 | 3875 | return false; |
9ce98649 TT |
3876 | |
3877 | for (i = 0; i < TYPE_NFIELDS (a); ++i) | |
3878 | if (!types_equal (TYPE_FIELD_TYPE (a, i), TYPE_FIELD_TYPE (b, i))) | |
894882e3 | 3879 | return false; |
9ce98649 | 3880 | |
894882e3 | 3881 | return true; |
9ce98649 TT |
3882 | } |
3883 | ||
894882e3 | 3884 | return false; |
7062b0a0 | 3885 | } |
ca092b61 DE |
3886 | \f |
3887 | /* Deep comparison of types. */ | |
3888 | ||
3889 | /* An entry in the type-equality bcache. */ | |
3890 | ||
894882e3 | 3891 | struct type_equality_entry |
ca092b61 | 3892 | { |
894882e3 TT |
3893 | type_equality_entry (struct type *t1, struct type *t2) |
3894 | : type1 (t1), | |
3895 | type2 (t2) | |
3896 | { | |
3897 | } | |
ca092b61 | 3898 | |
894882e3 TT |
3899 | struct type *type1, *type2; |
3900 | }; | |
ca092b61 | 3901 | |
894882e3 TT |
3902 | /* A helper function to compare two strings. Returns true if they are |
3903 | the same, false otherwise. Handles NULLs properly. */ | |
ca092b61 | 3904 | |
894882e3 | 3905 | static bool |
ca092b61 DE |
3906 | compare_maybe_null_strings (const char *s, const char *t) |
3907 | { | |
894882e3 TT |
3908 | if (s == NULL || t == NULL) |
3909 | return s == t; | |
ca092b61 DE |
3910 | return strcmp (s, t) == 0; |
3911 | } | |
3912 | ||
3913 | /* A helper function for check_types_worklist that checks two types for | |
894882e3 TT |
3914 | "deep" equality. Returns true if the types are considered the |
3915 | same, false otherwise. */ | |
ca092b61 | 3916 | |
894882e3 | 3917 | static bool |
ca092b61 | 3918 | check_types_equal (struct type *type1, struct type *type2, |
894882e3 | 3919 | std::vector<type_equality_entry> *worklist) |
ca092b61 | 3920 | { |
f168693b SM |
3921 | type1 = check_typedef (type1); |
3922 | type2 = check_typedef (type2); | |
ca092b61 DE |
3923 | |
3924 | if (type1 == type2) | |
894882e3 | 3925 | return true; |
ca092b61 DE |
3926 | |
3927 | if (TYPE_CODE (type1) != TYPE_CODE (type2) | |
3928 | || TYPE_LENGTH (type1) != TYPE_LENGTH (type2) | |
3929 | || TYPE_UNSIGNED (type1) != TYPE_UNSIGNED (type2) | |
3930 | || TYPE_NOSIGN (type1) != TYPE_NOSIGN (type2) | |
34877895 | 3931 | || TYPE_ENDIANITY_NOT_DEFAULT (type1) != TYPE_ENDIANITY_NOT_DEFAULT (type2) |
ca092b61 DE |
3932 | || TYPE_VARARGS (type1) != TYPE_VARARGS (type2) |
3933 | || TYPE_VECTOR (type1) != TYPE_VECTOR (type2) | |
3934 | || TYPE_NOTTEXT (type1) != TYPE_NOTTEXT (type2) | |
3935 | || TYPE_INSTANCE_FLAGS (type1) != TYPE_INSTANCE_FLAGS (type2) | |
3936 | || TYPE_NFIELDS (type1) != TYPE_NFIELDS (type2)) | |
894882e3 | 3937 | return false; |
ca092b61 | 3938 | |
e86ca25f | 3939 | if (!compare_maybe_null_strings (TYPE_NAME (type1), TYPE_NAME (type2))) |
894882e3 | 3940 | return false; |
ca092b61 | 3941 | if (!compare_maybe_null_strings (TYPE_NAME (type1), TYPE_NAME (type2))) |
894882e3 | 3942 | return false; |
ca092b61 DE |
3943 | |
3944 | if (TYPE_CODE (type1) == TYPE_CODE_RANGE) | |
3945 | { | |
0f59d5fc | 3946 | if (*TYPE_RANGE_DATA (type1) != *TYPE_RANGE_DATA (type2)) |
894882e3 | 3947 | return false; |
ca092b61 DE |
3948 | } |
3949 | else | |
3950 | { | |
3951 | int i; | |
3952 | ||
3953 | for (i = 0; i < TYPE_NFIELDS (type1); ++i) | |
3954 | { | |
3955 | const struct field *field1 = &TYPE_FIELD (type1, i); | |
3956 | const struct field *field2 = &TYPE_FIELD (type2, i); | |
ca092b61 DE |
3957 | |
3958 | if (FIELD_ARTIFICIAL (*field1) != FIELD_ARTIFICIAL (*field2) | |
3959 | || FIELD_BITSIZE (*field1) != FIELD_BITSIZE (*field2) | |
3960 | || FIELD_LOC_KIND (*field1) != FIELD_LOC_KIND (*field2)) | |
894882e3 | 3961 | return false; |
ca092b61 DE |
3962 | if (!compare_maybe_null_strings (FIELD_NAME (*field1), |
3963 | FIELD_NAME (*field2))) | |
894882e3 | 3964 | return false; |
ca092b61 DE |
3965 | switch (FIELD_LOC_KIND (*field1)) |
3966 | { | |
3967 | case FIELD_LOC_KIND_BITPOS: | |
3968 | if (FIELD_BITPOS (*field1) != FIELD_BITPOS (*field2)) | |
894882e3 | 3969 | return false; |
ca092b61 DE |
3970 | break; |
3971 | case FIELD_LOC_KIND_ENUMVAL: | |
3972 | if (FIELD_ENUMVAL (*field1) != FIELD_ENUMVAL (*field2)) | |
894882e3 | 3973 | return false; |
ca092b61 DE |
3974 | break; |
3975 | case FIELD_LOC_KIND_PHYSADDR: | |
3976 | if (FIELD_STATIC_PHYSADDR (*field1) | |
3977 | != FIELD_STATIC_PHYSADDR (*field2)) | |
894882e3 | 3978 | return false; |
ca092b61 DE |
3979 | break; |
3980 | case FIELD_LOC_KIND_PHYSNAME: | |
3981 | if (!compare_maybe_null_strings (FIELD_STATIC_PHYSNAME (*field1), | |
3982 | FIELD_STATIC_PHYSNAME (*field2))) | |
894882e3 | 3983 | return false; |
ca092b61 DE |
3984 | break; |
3985 | case FIELD_LOC_KIND_DWARF_BLOCK: | |
3986 | { | |
3987 | struct dwarf2_locexpr_baton *block1, *block2; | |
3988 | ||
3989 | block1 = FIELD_DWARF_BLOCK (*field1); | |
3990 | block2 = FIELD_DWARF_BLOCK (*field2); | |
3991 | if (block1->per_cu != block2->per_cu | |
3992 | || block1->size != block2->size | |
3993 | || memcmp (block1->data, block2->data, block1->size) != 0) | |
894882e3 | 3994 | return false; |
ca092b61 DE |
3995 | } |
3996 | break; | |
3997 | default: | |
3998 | internal_error (__FILE__, __LINE__, _("Unsupported field kind " | |
3999 | "%d by check_types_equal"), | |
4000 | FIELD_LOC_KIND (*field1)); | |
4001 | } | |
4002 | ||
894882e3 | 4003 | worklist->emplace_back (FIELD_TYPE (*field1), FIELD_TYPE (*field2)); |
ca092b61 DE |
4004 | } |
4005 | } | |
4006 | ||
4007 | if (TYPE_TARGET_TYPE (type1) != NULL) | |
4008 | { | |
ca092b61 | 4009 | if (TYPE_TARGET_TYPE (type2) == NULL) |
894882e3 | 4010 | return false; |
ca092b61 | 4011 | |
894882e3 TT |
4012 | worklist->emplace_back (TYPE_TARGET_TYPE (type1), |
4013 | TYPE_TARGET_TYPE (type2)); | |
ca092b61 DE |
4014 | } |
4015 | else if (TYPE_TARGET_TYPE (type2) != NULL) | |
894882e3 | 4016 | return false; |
ca092b61 | 4017 | |
894882e3 | 4018 | return true; |
ca092b61 DE |
4019 | } |
4020 | ||
894882e3 TT |
4021 | /* Check types on a worklist for equality. Returns false if any pair |
4022 | is not equal, true if they are all considered equal. */ | |
ca092b61 | 4023 | |
894882e3 TT |
4024 | static bool |
4025 | check_types_worklist (std::vector<type_equality_entry> *worklist, | |
dfb65191 | 4026 | gdb::bcache *cache) |
ca092b61 | 4027 | { |
894882e3 | 4028 | while (!worklist->empty ()) |
ca092b61 | 4029 | { |
ca092b61 DE |
4030 | int added; |
4031 | ||
894882e3 TT |
4032 | struct type_equality_entry entry = std::move (worklist->back ()); |
4033 | worklist->pop_back (); | |
ca092b61 DE |
4034 | |
4035 | /* If the type pair has already been visited, we know it is | |
4036 | ok. */ | |
25629dfd | 4037 | cache->insert (&entry, sizeof (entry), &added); |
ca092b61 DE |
4038 | if (!added) |
4039 | continue; | |
4040 | ||
894882e3 TT |
4041 | if (!check_types_equal (entry.type1, entry.type2, worklist)) |
4042 | return false; | |
ca092b61 | 4043 | } |
7062b0a0 | 4044 | |
894882e3 | 4045 | return true; |
ca092b61 DE |
4046 | } |
4047 | ||
894882e3 TT |
4048 | /* Return true if types TYPE1 and TYPE2 are equal, as determined by a |
4049 | "deep comparison". Otherwise return false. */ | |
ca092b61 | 4050 | |
894882e3 | 4051 | bool |
ca092b61 DE |
4052 | types_deeply_equal (struct type *type1, struct type *type2) |
4053 | { | |
894882e3 | 4054 | std::vector<type_equality_entry> worklist; |
ca092b61 DE |
4055 | |
4056 | gdb_assert (type1 != NULL && type2 != NULL); | |
4057 | ||
4058 | /* Early exit for the simple case. */ | |
4059 | if (type1 == type2) | |
894882e3 | 4060 | return true; |
ca092b61 | 4061 | |
dfb65191 | 4062 | gdb::bcache cache (nullptr, nullptr); |
894882e3 | 4063 | worklist.emplace_back (type1, type2); |
25629dfd | 4064 | return check_types_worklist (&worklist, &cache); |
ca092b61 | 4065 | } |
3f2f83dd KB |
4066 | |
4067 | /* Allocated status of type TYPE. Return zero if type TYPE is allocated. | |
4068 | Otherwise return one. */ | |
4069 | ||
4070 | int | |
4071 | type_not_allocated (const struct type *type) | |
4072 | { | |
4073 | struct dynamic_prop *prop = TYPE_ALLOCATED_PROP (type); | |
4074 | ||
4075 | return (prop && TYPE_DYN_PROP_KIND (prop) == PROP_CONST | |
4076 | && !TYPE_DYN_PROP_ADDR (prop)); | |
4077 | } | |
4078 | ||
4079 | /* Associated status of type TYPE. Return zero if type TYPE is associated. | |
4080 | Otherwise return one. */ | |
4081 | ||
4082 | int | |
4083 | type_not_associated (const struct type *type) | |
4084 | { | |
4085 | struct dynamic_prop *prop = TYPE_ASSOCIATED_PROP (type); | |
4086 | ||
4087 | return (prop && TYPE_DYN_PROP_KIND (prop) == PROP_CONST | |
4088 | && !TYPE_DYN_PROP_ADDR (prop)); | |
4089 | } | |
9293fc63 SM |
4090 | |
4091 | /* rank_one_type helper for when PARM's type code is TYPE_CODE_PTR. */ | |
4092 | ||
4093 | static struct rank | |
4094 | rank_one_type_parm_ptr (struct type *parm, struct type *arg, struct value *value) | |
4095 | { | |
4096 | struct rank rank = {0,0}; | |
4097 | ||
4098 | switch (TYPE_CODE (arg)) | |
4099 | { | |
4100 | case TYPE_CODE_PTR: | |
4101 | ||
4102 | /* Allowed pointer conversions are: | |
4103 | (a) pointer to void-pointer conversion. */ | |
4104 | if (TYPE_CODE (TYPE_TARGET_TYPE (parm)) == TYPE_CODE_VOID) | |
4105 | return VOID_PTR_CONVERSION_BADNESS; | |
4106 | ||
4107 | /* (b) pointer to ancestor-pointer conversion. */ | |
4108 | rank.subrank = distance_to_ancestor (TYPE_TARGET_TYPE (parm), | |
4109 | TYPE_TARGET_TYPE (arg), | |
4110 | 0); | |
4111 | if (rank.subrank >= 0) | |
4112 | return sum_ranks (BASE_PTR_CONVERSION_BADNESS, rank); | |
4113 | ||
4114 | return INCOMPATIBLE_TYPE_BADNESS; | |
4115 | case TYPE_CODE_ARRAY: | |
4116 | { | |
4117 | struct type *t1 = TYPE_TARGET_TYPE (parm); | |
4118 | struct type *t2 = TYPE_TARGET_TYPE (arg); | |
4119 | ||
4120 | if (types_equal (t1, t2)) | |
4121 | { | |
4122 | /* Make sure they are CV equal. */ | |
4123 | if (TYPE_CONST (t1) != TYPE_CONST (t2)) | |
4124 | rank.subrank |= CV_CONVERSION_CONST; | |
4125 | if (TYPE_VOLATILE (t1) != TYPE_VOLATILE (t2)) | |
4126 | rank.subrank |= CV_CONVERSION_VOLATILE; | |
4127 | if (rank.subrank != 0) | |
4128 | return sum_ranks (CV_CONVERSION_BADNESS, rank); | |
4129 | return EXACT_MATCH_BADNESS; | |
4130 | } | |
4131 | return INCOMPATIBLE_TYPE_BADNESS; | |
4132 | } | |
4133 | case TYPE_CODE_FUNC: | |
4134 | return rank_one_type (TYPE_TARGET_TYPE (parm), arg, NULL); | |
4135 | case TYPE_CODE_INT: | |
4136 | if (value != NULL && TYPE_CODE (value_type (value)) == TYPE_CODE_INT) | |
4137 | { | |
4138 | if (value_as_long (value) == 0) | |
4139 | { | |
4140 | /* Null pointer conversion: allow it to be cast to a pointer. | |
4141 | [4.10.1 of C++ standard draft n3290] */ | |
4142 | return NULL_POINTER_CONVERSION_BADNESS; | |
4143 | } | |
4144 | else | |
4145 | { | |
4146 | /* If type checking is disabled, allow the conversion. */ | |
4147 | if (!strict_type_checking) | |
4148 | return NS_INTEGER_POINTER_CONVERSION_BADNESS; | |
4149 | } | |
4150 | } | |
4151 | /* fall through */ | |
4152 | case TYPE_CODE_ENUM: | |
4153 | case TYPE_CODE_FLAGS: | |
4154 | case TYPE_CODE_CHAR: | |
4155 | case TYPE_CODE_RANGE: | |
4156 | case TYPE_CODE_BOOL: | |
4157 | default: | |
4158 | return INCOMPATIBLE_TYPE_BADNESS; | |
4159 | } | |
4160 | } | |
4161 | ||
b9f4512f SM |
4162 | /* rank_one_type helper for when PARM's type code is TYPE_CODE_ARRAY. */ |
4163 | ||
4164 | static struct rank | |
4165 | rank_one_type_parm_array (struct type *parm, struct type *arg, struct value *value) | |
4166 | { | |
4167 | switch (TYPE_CODE (arg)) | |
4168 | { | |
4169 | case TYPE_CODE_PTR: | |
4170 | case TYPE_CODE_ARRAY: | |
4171 | return rank_one_type (TYPE_TARGET_TYPE (parm), | |
4172 | TYPE_TARGET_TYPE (arg), NULL); | |
4173 | default: | |
4174 | return INCOMPATIBLE_TYPE_BADNESS; | |
4175 | } | |
4176 | } | |
4177 | ||
f1f832d6 SM |
4178 | /* rank_one_type helper for when PARM's type code is TYPE_CODE_FUNC. */ |
4179 | ||
4180 | static struct rank | |
4181 | rank_one_type_parm_func (struct type *parm, struct type *arg, struct value *value) | |
4182 | { | |
4183 | switch (TYPE_CODE (arg)) | |
4184 | { | |
4185 | case TYPE_CODE_PTR: /* funcptr -> func */ | |
4186 | return rank_one_type (parm, TYPE_TARGET_TYPE (arg), NULL); | |
4187 | default: | |
4188 | return INCOMPATIBLE_TYPE_BADNESS; | |
4189 | } | |
4190 | } | |
4191 | ||
34910087 SM |
4192 | /* rank_one_type helper for when PARM's type code is TYPE_CODE_INT. */ |
4193 | ||
4194 | static struct rank | |
4195 | rank_one_type_parm_int (struct type *parm, struct type *arg, struct value *value) | |
4196 | { | |
4197 | switch (TYPE_CODE (arg)) | |
4198 | { | |
4199 | case TYPE_CODE_INT: | |
4200 | if (TYPE_LENGTH (arg) == TYPE_LENGTH (parm)) | |
4201 | { | |
4202 | /* Deal with signed, unsigned, and plain chars and | |
4203 | signed and unsigned ints. */ | |
4204 | if (TYPE_NOSIGN (parm)) | |
4205 | { | |
4206 | /* This case only for character types. */ | |
4207 | if (TYPE_NOSIGN (arg)) | |
4208 | return EXACT_MATCH_BADNESS; /* plain char -> plain char */ | |
4209 | else /* signed/unsigned char -> plain char */ | |
4210 | return INTEGER_CONVERSION_BADNESS; | |
4211 | } | |
4212 | else if (TYPE_UNSIGNED (parm)) | |
4213 | { | |
4214 | if (TYPE_UNSIGNED (arg)) | |
4215 | { | |
4216 | /* unsigned int -> unsigned int, or | |
4217 | unsigned long -> unsigned long */ | |
4218 | if (integer_types_same_name_p (TYPE_NAME (parm), | |
4219 | TYPE_NAME (arg))) | |
4220 | return EXACT_MATCH_BADNESS; | |
4221 | else if (integer_types_same_name_p (TYPE_NAME (arg), | |
4222 | "int") | |
4223 | && integer_types_same_name_p (TYPE_NAME (parm), | |
4224 | "long")) | |
4225 | /* unsigned int -> unsigned long */ | |
4226 | return INTEGER_PROMOTION_BADNESS; | |
4227 | else | |
4228 | /* unsigned long -> unsigned int */ | |
4229 | return INTEGER_CONVERSION_BADNESS; | |
4230 | } | |
4231 | else | |
4232 | { | |
4233 | if (integer_types_same_name_p (TYPE_NAME (arg), | |
4234 | "long") | |
4235 | && integer_types_same_name_p (TYPE_NAME (parm), | |
4236 | "int")) | |
4237 | /* signed long -> unsigned int */ | |
4238 | return INTEGER_CONVERSION_BADNESS; | |
4239 | else | |
4240 | /* signed int/long -> unsigned int/long */ | |
4241 | return INTEGER_CONVERSION_BADNESS; | |
4242 | } | |
4243 | } | |
4244 | else if (!TYPE_NOSIGN (arg) && !TYPE_UNSIGNED (arg)) | |
4245 | { | |
4246 | if (integer_types_same_name_p (TYPE_NAME (parm), | |
4247 | TYPE_NAME (arg))) | |
4248 | return EXACT_MATCH_BADNESS; | |
4249 | else if (integer_types_same_name_p (TYPE_NAME (arg), | |
4250 | "int") | |
4251 | && integer_types_same_name_p (TYPE_NAME (parm), | |
4252 | "long")) | |
4253 | return INTEGER_PROMOTION_BADNESS; | |
4254 | else | |
4255 | return INTEGER_CONVERSION_BADNESS; | |
4256 | } | |
4257 | else | |
4258 | return INTEGER_CONVERSION_BADNESS; | |
4259 | } | |
4260 | else if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm)) | |
4261 | return INTEGER_PROMOTION_BADNESS; | |
4262 | else | |
4263 | return INTEGER_CONVERSION_BADNESS; | |
4264 | case TYPE_CODE_ENUM: | |
4265 | case TYPE_CODE_FLAGS: | |
4266 | case TYPE_CODE_CHAR: | |
4267 | case TYPE_CODE_RANGE: | |
4268 | case TYPE_CODE_BOOL: | |
4269 | if (TYPE_DECLARED_CLASS (arg)) | |
4270 | return INCOMPATIBLE_TYPE_BADNESS; | |
4271 | return INTEGER_PROMOTION_BADNESS; | |
4272 | case TYPE_CODE_FLT: | |
4273 | return INT_FLOAT_CONVERSION_BADNESS; | |
4274 | case TYPE_CODE_PTR: | |
4275 | return NS_POINTER_CONVERSION_BADNESS; | |
4276 | default: | |
4277 | return INCOMPATIBLE_TYPE_BADNESS; | |
4278 | } | |
4279 | } | |
4280 | ||
793cd1d2 SM |
4281 | /* rank_one_type helper for when PARM's type code is TYPE_CODE_ENUM. */ |
4282 | ||
4283 | static struct rank | |
4284 | rank_one_type_parm_enum (struct type *parm, struct type *arg, struct value *value) | |
4285 | { | |
4286 | switch (TYPE_CODE (arg)) | |
4287 | { | |
4288 | case TYPE_CODE_INT: | |
4289 | case TYPE_CODE_CHAR: | |
4290 | case TYPE_CODE_RANGE: | |
4291 | case TYPE_CODE_BOOL: | |
4292 | case TYPE_CODE_ENUM: | |
4293 | if (TYPE_DECLARED_CLASS (parm) || TYPE_DECLARED_CLASS (arg)) | |
4294 | return INCOMPATIBLE_TYPE_BADNESS; | |
4295 | return INTEGER_CONVERSION_BADNESS; | |
4296 | case TYPE_CODE_FLT: | |
4297 | return INT_FLOAT_CONVERSION_BADNESS; | |
4298 | default: | |
4299 | return INCOMPATIBLE_TYPE_BADNESS; | |
4300 | } | |
4301 | } | |
4302 | ||
41ea4728 SM |
4303 | /* rank_one_type helper for when PARM's type code is TYPE_CODE_CHAR. */ |
4304 | ||
4305 | static struct rank | |
4306 | rank_one_type_parm_char (struct type *parm, struct type *arg, struct value *value) | |
4307 | { | |
4308 | switch (TYPE_CODE (arg)) | |
4309 | { | |
4310 | case TYPE_CODE_RANGE: | |
4311 | case TYPE_CODE_BOOL: | |
4312 | case TYPE_CODE_ENUM: | |
4313 | if (TYPE_DECLARED_CLASS (arg)) | |
4314 | return INCOMPATIBLE_TYPE_BADNESS; | |
4315 | return INTEGER_CONVERSION_BADNESS; | |
4316 | case TYPE_CODE_FLT: | |
4317 | return INT_FLOAT_CONVERSION_BADNESS; | |
4318 | case TYPE_CODE_INT: | |
4319 | if (TYPE_LENGTH (arg) > TYPE_LENGTH (parm)) | |
4320 | return INTEGER_CONVERSION_BADNESS; | |
4321 | else if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm)) | |
4322 | return INTEGER_PROMOTION_BADNESS; | |
4323 | /* fall through */ | |
4324 | case TYPE_CODE_CHAR: | |
4325 | /* Deal with signed, unsigned, and plain chars for C++ and | |
4326 | with int cases falling through from previous case. */ | |
4327 | if (TYPE_NOSIGN (parm)) | |
4328 | { | |
4329 | if (TYPE_NOSIGN (arg)) | |
4330 | return EXACT_MATCH_BADNESS; | |
4331 | else | |
4332 | return INTEGER_CONVERSION_BADNESS; | |
4333 | } | |
4334 | else if (TYPE_UNSIGNED (parm)) | |
4335 | { | |
4336 | if (TYPE_UNSIGNED (arg)) | |
4337 | return EXACT_MATCH_BADNESS; | |
4338 | else | |
4339 | return INTEGER_PROMOTION_BADNESS; | |
4340 | } | |
4341 | else if (!TYPE_NOSIGN (arg) && !TYPE_UNSIGNED (arg)) | |
4342 | return EXACT_MATCH_BADNESS; | |
4343 | else | |
4344 | return INTEGER_CONVERSION_BADNESS; | |
4345 | default: | |
4346 | return INCOMPATIBLE_TYPE_BADNESS; | |
4347 | } | |
4348 | } | |
4349 | ||
0dd322dc SM |
4350 | /* rank_one_type helper for when PARM's type code is TYPE_CODE_RANGE. */ |
4351 | ||
4352 | static struct rank | |
4353 | rank_one_type_parm_range (struct type *parm, struct type *arg, struct value *value) | |
4354 | { | |
4355 | switch (TYPE_CODE (arg)) | |
4356 | { | |
4357 | case TYPE_CODE_INT: | |
4358 | case TYPE_CODE_CHAR: | |
4359 | case TYPE_CODE_RANGE: | |
4360 | case TYPE_CODE_BOOL: | |
4361 | case TYPE_CODE_ENUM: | |
4362 | return INTEGER_CONVERSION_BADNESS; | |
4363 | case TYPE_CODE_FLT: | |
4364 | return INT_FLOAT_CONVERSION_BADNESS; | |
4365 | default: | |
4366 | return INCOMPATIBLE_TYPE_BADNESS; | |
4367 | } | |
4368 | } | |
4369 | ||
2c509035 SM |
4370 | /* rank_one_type helper for when PARM's type code is TYPE_CODE_BOOL. */ |
4371 | ||
4372 | static struct rank | |
4373 | rank_one_type_parm_bool (struct type *parm, struct type *arg, struct value *value) | |
4374 | { | |
4375 | switch (TYPE_CODE (arg)) | |
4376 | { | |
4377 | /* n3290 draft, section 4.12.1 (conv.bool): | |
4378 | ||
4379 | "A prvalue of arithmetic, unscoped enumeration, pointer, or | |
4380 | pointer to member type can be converted to a prvalue of type | |
4381 | bool. A zero value, null pointer value, or null member pointer | |
4382 | value is converted to false; any other value is converted to | |
4383 | true. A prvalue of type std::nullptr_t can be converted to a | |
4384 | prvalue of type bool; the resulting value is false." */ | |
4385 | case TYPE_CODE_INT: | |
4386 | case TYPE_CODE_CHAR: | |
4387 | case TYPE_CODE_ENUM: | |
4388 | case TYPE_CODE_FLT: | |
4389 | case TYPE_CODE_MEMBERPTR: | |
4390 | case TYPE_CODE_PTR: | |
4391 | return BOOL_CONVERSION_BADNESS; | |
4392 | case TYPE_CODE_RANGE: | |
4393 | return INCOMPATIBLE_TYPE_BADNESS; | |
4394 | case TYPE_CODE_BOOL: | |
4395 | return EXACT_MATCH_BADNESS; | |
4396 | default: | |
4397 | return INCOMPATIBLE_TYPE_BADNESS; | |
4398 | } | |
4399 | } | |
4400 | ||
7f17b20d SM |
4401 | /* rank_one_type helper for when PARM's type code is TYPE_CODE_FLOAT. */ |
4402 | ||
4403 | static struct rank | |
4404 | rank_one_type_parm_float (struct type *parm, struct type *arg, struct value *value) | |
4405 | { | |
4406 | switch (TYPE_CODE (arg)) | |
4407 | { | |
4408 | case TYPE_CODE_FLT: | |
4409 | if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm)) | |
4410 | return FLOAT_PROMOTION_BADNESS; | |
4411 | else if (TYPE_LENGTH (arg) == TYPE_LENGTH (parm)) | |
4412 | return EXACT_MATCH_BADNESS; | |
4413 | else | |
4414 | return FLOAT_CONVERSION_BADNESS; | |
4415 | case TYPE_CODE_INT: | |
4416 | case TYPE_CODE_BOOL: | |
4417 | case TYPE_CODE_ENUM: | |
4418 | case TYPE_CODE_RANGE: | |
4419 | case TYPE_CODE_CHAR: | |
4420 | return INT_FLOAT_CONVERSION_BADNESS; | |
4421 | default: | |
4422 | return INCOMPATIBLE_TYPE_BADNESS; | |
4423 | } | |
4424 | } | |
4425 | ||
2598a94b SM |
4426 | /* rank_one_type helper for when PARM's type code is TYPE_CODE_COMPLEX. */ |
4427 | ||
4428 | static struct rank | |
4429 | rank_one_type_parm_complex (struct type *parm, struct type *arg, struct value *value) | |
4430 | { | |
4431 | switch (TYPE_CODE (arg)) | |
4432 | { /* Strictly not needed for C++, but... */ | |
4433 | case TYPE_CODE_FLT: | |
4434 | return FLOAT_PROMOTION_BADNESS; | |
4435 | case TYPE_CODE_COMPLEX: | |
4436 | return EXACT_MATCH_BADNESS; | |
4437 | default: | |
4438 | return INCOMPATIBLE_TYPE_BADNESS; | |
4439 | } | |
4440 | } | |
4441 | ||
595f96a9 SM |
4442 | /* rank_one_type helper for when PARM's type code is TYPE_CODE_STRUCT. */ |
4443 | ||
4444 | static struct rank | |
4445 | rank_one_type_parm_struct (struct type *parm, struct type *arg, struct value *value) | |
4446 | { | |
4447 | struct rank rank = {0, 0}; | |
4448 | ||
4449 | switch (TYPE_CODE (arg)) | |
4450 | { | |
4451 | case TYPE_CODE_STRUCT: | |
4452 | /* Check for derivation */ | |
4453 | rank.subrank = distance_to_ancestor (parm, arg, 0); | |
4454 | if (rank.subrank >= 0) | |
4455 | return sum_ranks (BASE_CONVERSION_BADNESS, rank); | |
4456 | /* fall through */ | |
4457 | default: | |
4458 | return INCOMPATIBLE_TYPE_BADNESS; | |
4459 | } | |
4460 | } | |
4461 | ||
f09ce22d SM |
4462 | /* rank_one_type helper for when PARM's type code is TYPE_CODE_SET. */ |
4463 | ||
4464 | static struct rank | |
4465 | rank_one_type_parm_set (struct type *parm, struct type *arg, struct value *value) | |
4466 | { | |
4467 | switch (TYPE_CODE (arg)) | |
4468 | { | |
4469 | /* Not in C++ */ | |
4470 | case TYPE_CODE_SET: | |
4471 | return rank_one_type (TYPE_FIELD_TYPE (parm, 0), | |
4472 | TYPE_FIELD_TYPE (arg, 0), NULL); | |
4473 | default: | |
4474 | return INCOMPATIBLE_TYPE_BADNESS; | |
4475 | } | |
4476 | } | |
4477 | ||
c906108c SS |
4478 | /* Compare one type (PARM) for compatibility with another (ARG). |
4479 | * PARM is intended to be the parameter type of a function; and | |
4480 | * ARG is the supplied argument's type. This function tests if | |
4481 | * the latter can be converted to the former. | |
da096638 | 4482 | * VALUE is the argument's value or NULL if none (or called recursively) |
c906108c SS |
4483 | * |
4484 | * Return 0 if they are identical types; | |
4485 | * Otherwise, return an integer which corresponds to how compatible | |
7ba81444 MS |
4486 | * PARM is to ARG. The higher the return value, the worse the match. |
4487 | * Generally the "bad" conversions are all uniformly assigned a 100. */ | |
c906108c | 4488 | |
6403aeea | 4489 | struct rank |
da096638 | 4490 | rank_one_type (struct type *parm, struct type *arg, struct value *value) |
c906108c | 4491 | { |
a9d5ef47 | 4492 | struct rank rank = {0,0}; |
7062b0a0 | 4493 | |
c906108c SS |
4494 | /* Resolve typedefs */ |
4495 | if (TYPE_CODE (parm) == TYPE_CODE_TYPEDEF) | |
4496 | parm = check_typedef (parm); | |
4497 | if (TYPE_CODE (arg) == TYPE_CODE_TYPEDEF) | |
4498 | arg = check_typedef (arg); | |
4499 | ||
e15c3eb4 | 4500 | if (TYPE_IS_REFERENCE (parm) && value != NULL) |
15c0a2a9 | 4501 | { |
e15c3eb4 KS |
4502 | if (VALUE_LVAL (value) == not_lval) |
4503 | { | |
4504 | /* Rvalues should preferably bind to rvalue references or const | |
4505 | lvalue references. */ | |
4506 | if (TYPE_CODE (parm) == TYPE_CODE_RVALUE_REF) | |
4507 | rank.subrank = REFERENCE_CONVERSION_RVALUE; | |
4508 | else if (TYPE_CONST (TYPE_TARGET_TYPE (parm))) | |
4509 | rank.subrank = REFERENCE_CONVERSION_CONST_LVALUE; | |
4510 | else | |
4511 | return INCOMPATIBLE_TYPE_BADNESS; | |
4512 | return sum_ranks (rank, REFERENCE_CONVERSION_BADNESS); | |
4513 | } | |
4514 | else | |
4515 | { | |
330f1d38 | 4516 | /* It's illegal to pass an lvalue as an rvalue. */ |
e15c3eb4 | 4517 | if (TYPE_CODE (parm) == TYPE_CODE_RVALUE_REF) |
330f1d38 | 4518 | return INCOMPATIBLE_TYPE_BADNESS; |
e15c3eb4 | 4519 | } |
15c0a2a9 AV |
4520 | } |
4521 | ||
4522 | if (types_equal (parm, arg)) | |
15c0a2a9 | 4523 | { |
e15c3eb4 KS |
4524 | struct type *t1 = parm; |
4525 | struct type *t2 = arg; | |
15c0a2a9 | 4526 | |
e15c3eb4 KS |
4527 | /* For pointers and references, compare target type. */ |
4528 | if (TYPE_CODE (parm) == TYPE_CODE_PTR || TYPE_IS_REFERENCE (parm)) | |
4529 | { | |
4530 | t1 = TYPE_TARGET_TYPE (parm); | |
4531 | t2 = TYPE_TARGET_TYPE (arg); | |
4532 | } | |
15c0a2a9 | 4533 | |
e15c3eb4 KS |
4534 | /* Make sure they are CV equal, too. */ |
4535 | if (TYPE_CONST (t1) != TYPE_CONST (t2)) | |
4536 | rank.subrank |= CV_CONVERSION_CONST; | |
4537 | if (TYPE_VOLATILE (t1) != TYPE_VOLATILE (t2)) | |
4538 | rank.subrank |= CV_CONVERSION_VOLATILE; | |
4539 | if (rank.subrank != 0) | |
4540 | return sum_ranks (CV_CONVERSION_BADNESS, rank); | |
4541 | return EXACT_MATCH_BADNESS; | |
15c0a2a9 AV |
4542 | } |
4543 | ||
db577aea | 4544 | /* See through references, since we can almost make non-references |
7ba81444 | 4545 | references. */ |
aa006118 AV |
4546 | |
4547 | if (TYPE_IS_REFERENCE (arg)) | |
da096638 | 4548 | return (sum_ranks (rank_one_type (parm, TYPE_TARGET_TYPE (arg), NULL), |
06acc08f | 4549 | REFERENCE_SEE_THROUGH_BADNESS)); |
aa006118 | 4550 | if (TYPE_IS_REFERENCE (parm)) |
da096638 | 4551 | return (sum_ranks (rank_one_type (TYPE_TARGET_TYPE (parm), arg, NULL), |
06acc08f | 4552 | REFERENCE_SEE_THROUGH_BADNESS)); |
5d161b24 | 4553 | if (overload_debug) |
7ba81444 MS |
4554 | /* Debugging only. */ |
4555 | fprintf_filtered (gdb_stderr, | |
4556 | "------ Arg is %s [%d], parm is %s [%d]\n", | |
4557 | TYPE_NAME (arg), TYPE_CODE (arg), | |
4558 | TYPE_NAME (parm), TYPE_CODE (parm)); | |
c906108c | 4559 | |
0963b4bd | 4560 | /* x -> y means arg of type x being supplied for parameter of type y. */ |
c906108c SS |
4561 | |
4562 | switch (TYPE_CODE (parm)) | |
4563 | { | |
c5aa993b | 4564 | case TYPE_CODE_PTR: |
9293fc63 | 4565 | return rank_one_type_parm_ptr (parm, arg, value); |
c5aa993b | 4566 | case TYPE_CODE_ARRAY: |
b9f4512f | 4567 | return rank_one_type_parm_array (parm, arg, value); |
c5aa993b | 4568 | case TYPE_CODE_FUNC: |
f1f832d6 | 4569 | return rank_one_type_parm_func (parm, arg, value); |
c5aa993b | 4570 | case TYPE_CODE_INT: |
34910087 | 4571 | return rank_one_type_parm_int (parm, arg, value); |
c5aa993b | 4572 | case TYPE_CODE_ENUM: |
793cd1d2 | 4573 | return rank_one_type_parm_enum (parm, arg, value); |
c5aa993b | 4574 | case TYPE_CODE_CHAR: |
41ea4728 | 4575 | return rank_one_type_parm_char (parm, arg, value); |
c5aa993b | 4576 | case TYPE_CODE_RANGE: |
0dd322dc | 4577 | return rank_one_type_parm_range (parm, arg, value); |
c5aa993b | 4578 | case TYPE_CODE_BOOL: |
2c509035 | 4579 | return rank_one_type_parm_bool (parm, arg, value); |
c5aa993b | 4580 | case TYPE_CODE_FLT: |
7f17b20d | 4581 | return rank_one_type_parm_float (parm, arg, value); |
c5aa993b | 4582 | case TYPE_CODE_COMPLEX: |
2598a94b | 4583 | return rank_one_type_parm_complex (parm, arg, value); |
c5aa993b | 4584 | case TYPE_CODE_STRUCT: |
595f96a9 | 4585 | return rank_one_type_parm_struct (parm, arg, value); |
c5aa993b | 4586 | case TYPE_CODE_SET: |
f09ce22d | 4587 | return rank_one_type_parm_set (parm, arg, value); |
c5aa993b JM |
4588 | default: |
4589 | return INCOMPATIBLE_TYPE_BADNESS; | |
4590 | } /* switch (TYPE_CODE (arg)) */ | |
c906108c SS |
4591 | } |
4592 | ||
0963b4bd | 4593 | /* End of functions for overload resolution. */ |
5212577a DE |
4594 | \f |
4595 | /* Routines to pretty-print types. */ | |
c906108c | 4596 | |
c906108c | 4597 | static void |
fba45db2 | 4598 | print_bit_vector (B_TYPE *bits, int nbits) |
c906108c SS |
4599 | { |
4600 | int bitno; | |
4601 | ||
4602 | for (bitno = 0; bitno < nbits; bitno++) | |
4603 | { | |
4604 | if ((bitno % 8) == 0) | |
4605 | { | |
4606 | puts_filtered (" "); | |
4607 | } | |
4608 | if (B_TST (bits, bitno)) | |
a3f17187 | 4609 | printf_filtered (("1")); |
c906108c | 4610 | else |
a3f17187 | 4611 | printf_filtered (("0")); |
c906108c SS |
4612 | } |
4613 | } | |
4614 | ||
ad2f7632 | 4615 | /* Note the first arg should be the "this" pointer, we may not want to |
7ba81444 MS |
4616 | include it since we may get into a infinitely recursive |
4617 | situation. */ | |
c906108c SS |
4618 | |
4619 | static void | |
4c9e8482 | 4620 | print_args (struct field *args, int nargs, int spaces) |
c906108c SS |
4621 | { |
4622 | if (args != NULL) | |
4623 | { | |
ad2f7632 DJ |
4624 | int i; |
4625 | ||
4626 | for (i = 0; i < nargs; i++) | |
4c9e8482 DE |
4627 | { |
4628 | printfi_filtered (spaces, "[%d] name '%s'\n", i, | |
4629 | args[i].name != NULL ? args[i].name : "<NULL>"); | |
4630 | recursive_dump_type (args[i].type, spaces + 2); | |
4631 | } | |
c906108c SS |
4632 | } |
4633 | } | |
4634 | ||
d6a843b5 JK |
4635 | int |
4636 | field_is_static (struct field *f) | |
4637 | { | |
4638 | /* "static" fields are the fields whose location is not relative | |
4639 | to the address of the enclosing struct. It would be nice to | |
4640 | have a dedicated flag that would be set for static fields when | |
4641 | the type is being created. But in practice, checking the field | |
254e6b9e | 4642 | loc_kind should give us an accurate answer. */ |
d6a843b5 JK |
4643 | return (FIELD_LOC_KIND (*f) == FIELD_LOC_KIND_PHYSNAME |
4644 | || FIELD_LOC_KIND (*f) == FIELD_LOC_KIND_PHYSADDR); | |
4645 | } | |
4646 | ||
c906108c | 4647 | static void |
fba45db2 | 4648 | dump_fn_fieldlists (struct type *type, int spaces) |
c906108c SS |
4649 | { |
4650 | int method_idx; | |
4651 | int overload_idx; | |
4652 | struct fn_field *f; | |
4653 | ||
4654 | printfi_filtered (spaces, "fn_fieldlists "); | |
d4f3574e | 4655 | gdb_print_host_address (TYPE_FN_FIELDLISTS (type), gdb_stdout); |
c906108c SS |
4656 | printf_filtered ("\n"); |
4657 | for (method_idx = 0; method_idx < TYPE_NFN_FIELDS (type); method_idx++) | |
4658 | { | |
4659 | f = TYPE_FN_FIELDLIST1 (type, method_idx); | |
4660 | printfi_filtered (spaces + 2, "[%d] name '%s' (", | |
4661 | method_idx, | |
4662 | TYPE_FN_FIELDLIST_NAME (type, method_idx)); | |
d4f3574e SS |
4663 | gdb_print_host_address (TYPE_FN_FIELDLIST_NAME (type, method_idx), |
4664 | gdb_stdout); | |
a3f17187 | 4665 | printf_filtered (_(") length %d\n"), |
c906108c SS |
4666 | TYPE_FN_FIELDLIST_LENGTH (type, method_idx)); |
4667 | for (overload_idx = 0; | |
4668 | overload_idx < TYPE_FN_FIELDLIST_LENGTH (type, method_idx); | |
4669 | overload_idx++) | |
4670 | { | |
4671 | printfi_filtered (spaces + 4, "[%d] physname '%s' (", | |
4672 | overload_idx, | |
4673 | TYPE_FN_FIELD_PHYSNAME (f, overload_idx)); | |
d4f3574e SS |
4674 | gdb_print_host_address (TYPE_FN_FIELD_PHYSNAME (f, overload_idx), |
4675 | gdb_stdout); | |
c906108c SS |
4676 | printf_filtered (")\n"); |
4677 | printfi_filtered (spaces + 8, "type "); | |
7ba81444 MS |
4678 | gdb_print_host_address (TYPE_FN_FIELD_TYPE (f, overload_idx), |
4679 | gdb_stdout); | |
c906108c SS |
4680 | printf_filtered ("\n"); |
4681 | ||
4682 | recursive_dump_type (TYPE_FN_FIELD_TYPE (f, overload_idx), | |
4683 | spaces + 8 + 2); | |
4684 | ||
4685 | printfi_filtered (spaces + 8, "args "); | |
7ba81444 MS |
4686 | gdb_print_host_address (TYPE_FN_FIELD_ARGS (f, overload_idx), |
4687 | gdb_stdout); | |
c906108c | 4688 | printf_filtered ("\n"); |
4c9e8482 DE |
4689 | print_args (TYPE_FN_FIELD_ARGS (f, overload_idx), |
4690 | TYPE_NFIELDS (TYPE_FN_FIELD_TYPE (f, overload_idx)), | |
4691 | spaces + 8 + 2); | |
c906108c | 4692 | printfi_filtered (spaces + 8, "fcontext "); |
d4f3574e SS |
4693 | gdb_print_host_address (TYPE_FN_FIELD_FCONTEXT (f, overload_idx), |
4694 | gdb_stdout); | |
c906108c SS |
4695 | printf_filtered ("\n"); |
4696 | ||
4697 | printfi_filtered (spaces + 8, "is_const %d\n", | |
4698 | TYPE_FN_FIELD_CONST (f, overload_idx)); | |
4699 | printfi_filtered (spaces + 8, "is_volatile %d\n", | |
4700 | TYPE_FN_FIELD_VOLATILE (f, overload_idx)); | |
4701 | printfi_filtered (spaces + 8, "is_private %d\n", | |
4702 | TYPE_FN_FIELD_PRIVATE (f, overload_idx)); | |
4703 | printfi_filtered (spaces + 8, "is_protected %d\n", | |
4704 | TYPE_FN_FIELD_PROTECTED (f, overload_idx)); | |
4705 | printfi_filtered (spaces + 8, "is_stub %d\n", | |
4706 | TYPE_FN_FIELD_STUB (f, overload_idx)); | |
e35000a7 TBA |
4707 | printfi_filtered (spaces + 8, "defaulted %d\n", |
4708 | TYPE_FN_FIELD_DEFAULTED (f, overload_idx)); | |
4709 | printfi_filtered (spaces + 8, "is_deleted %d\n", | |
4710 | TYPE_FN_FIELD_DELETED (f, overload_idx)); | |
c906108c SS |
4711 | printfi_filtered (spaces + 8, "voffset %u\n", |
4712 | TYPE_FN_FIELD_VOFFSET (f, overload_idx)); | |
4713 | } | |
4714 | } | |
4715 | } | |
4716 | ||
4717 | static void | |
fba45db2 | 4718 | print_cplus_stuff (struct type *type, int spaces) |
c906108c | 4719 | { |
ae6ae975 DE |
4720 | printfi_filtered (spaces, "vptr_fieldno %d\n", TYPE_VPTR_FIELDNO (type)); |
4721 | printfi_filtered (spaces, "vptr_basetype "); | |
4722 | gdb_print_host_address (TYPE_VPTR_BASETYPE (type), gdb_stdout); | |
4723 | puts_filtered ("\n"); | |
4724 | if (TYPE_VPTR_BASETYPE (type) != NULL) | |
4725 | recursive_dump_type (TYPE_VPTR_BASETYPE (type), spaces + 2); | |
4726 | ||
c906108c SS |
4727 | printfi_filtered (spaces, "n_baseclasses %d\n", |
4728 | TYPE_N_BASECLASSES (type)); | |
4729 | printfi_filtered (spaces, "nfn_fields %d\n", | |
4730 | TYPE_NFN_FIELDS (type)); | |
c906108c SS |
4731 | if (TYPE_N_BASECLASSES (type) > 0) |
4732 | { | |
4733 | printfi_filtered (spaces, "virtual_field_bits (%d bits at *", | |
4734 | TYPE_N_BASECLASSES (type)); | |
7ba81444 MS |
4735 | gdb_print_host_address (TYPE_FIELD_VIRTUAL_BITS (type), |
4736 | gdb_stdout); | |
c906108c SS |
4737 | printf_filtered (")"); |
4738 | ||
4739 | print_bit_vector (TYPE_FIELD_VIRTUAL_BITS (type), | |
4740 | TYPE_N_BASECLASSES (type)); | |
4741 | puts_filtered ("\n"); | |
4742 | } | |
4743 | if (TYPE_NFIELDS (type) > 0) | |
4744 | { | |
4745 | if (TYPE_FIELD_PRIVATE_BITS (type) != NULL) | |
4746 | { | |
7ba81444 MS |
4747 | printfi_filtered (spaces, |
4748 | "private_field_bits (%d bits at *", | |
c906108c | 4749 | TYPE_NFIELDS (type)); |
7ba81444 MS |
4750 | gdb_print_host_address (TYPE_FIELD_PRIVATE_BITS (type), |
4751 | gdb_stdout); | |
c906108c SS |
4752 | printf_filtered (")"); |
4753 | print_bit_vector (TYPE_FIELD_PRIVATE_BITS (type), | |
4754 | TYPE_NFIELDS (type)); | |
4755 | puts_filtered ("\n"); | |
4756 | } | |
4757 | if (TYPE_FIELD_PROTECTED_BITS (type) != NULL) | |
4758 | { | |
7ba81444 MS |
4759 | printfi_filtered (spaces, |
4760 | "protected_field_bits (%d bits at *", | |
c906108c | 4761 | TYPE_NFIELDS (type)); |
7ba81444 MS |
4762 | gdb_print_host_address (TYPE_FIELD_PROTECTED_BITS (type), |
4763 | gdb_stdout); | |
c906108c SS |
4764 | printf_filtered (")"); |
4765 | print_bit_vector (TYPE_FIELD_PROTECTED_BITS (type), | |
4766 | TYPE_NFIELDS (type)); | |
4767 | puts_filtered ("\n"); | |
4768 | } | |
4769 | } | |
4770 | if (TYPE_NFN_FIELDS (type) > 0) | |
4771 | { | |
4772 | dump_fn_fieldlists (type, spaces); | |
4773 | } | |
e35000a7 TBA |
4774 | |
4775 | printfi_filtered (spaces, "calling_convention %d\n", | |
4776 | TYPE_CPLUS_CALLING_CONVENTION (type)); | |
c906108c SS |
4777 | } |
4778 | ||
b4ba55a1 JB |
4779 | /* Print the contents of the TYPE's type_specific union, assuming that |
4780 | its type-specific kind is TYPE_SPECIFIC_GNAT_STUFF. */ | |
4781 | ||
4782 | static void | |
4783 | print_gnat_stuff (struct type *type, int spaces) | |
4784 | { | |
4785 | struct type *descriptive_type = TYPE_DESCRIPTIVE_TYPE (type); | |
4786 | ||
8cd00c59 PMR |
4787 | if (descriptive_type == NULL) |
4788 | printfi_filtered (spaces + 2, "no descriptive type\n"); | |
4789 | else | |
4790 | { | |
4791 | printfi_filtered (spaces + 2, "descriptive type\n"); | |
4792 | recursive_dump_type (descriptive_type, spaces + 4); | |
4793 | } | |
b4ba55a1 JB |
4794 | } |
4795 | ||
c906108c SS |
4796 | static struct obstack dont_print_type_obstack; |
4797 | ||
4798 | void | |
fba45db2 | 4799 | recursive_dump_type (struct type *type, int spaces) |
c906108c SS |
4800 | { |
4801 | int idx; | |
4802 | ||
4803 | if (spaces == 0) | |
4804 | obstack_begin (&dont_print_type_obstack, 0); | |
4805 | ||
4806 | if (TYPE_NFIELDS (type) > 0 | |
b4ba55a1 | 4807 | || (HAVE_CPLUS_STRUCT (type) && TYPE_NFN_FIELDS (type) > 0)) |
c906108c SS |
4808 | { |
4809 | struct type **first_dont_print | |
7ba81444 | 4810 | = (struct type **) obstack_base (&dont_print_type_obstack); |
c906108c | 4811 | |
7ba81444 MS |
4812 | int i = (struct type **) |
4813 | obstack_next_free (&dont_print_type_obstack) - first_dont_print; | |
c906108c SS |
4814 | |
4815 | while (--i >= 0) | |
4816 | { | |
4817 | if (type == first_dont_print[i]) | |
4818 | { | |
4819 | printfi_filtered (spaces, "type node "); | |
d4f3574e | 4820 | gdb_print_host_address (type, gdb_stdout); |
a3f17187 | 4821 | printf_filtered (_(" <same as already seen type>\n")); |
c906108c SS |
4822 | return; |
4823 | } | |
4824 | } | |
4825 | ||
4826 | obstack_ptr_grow (&dont_print_type_obstack, type); | |
4827 | } | |
4828 | ||
4829 | printfi_filtered (spaces, "type node "); | |
d4f3574e | 4830 | gdb_print_host_address (type, gdb_stdout); |
c906108c SS |
4831 | printf_filtered ("\n"); |
4832 | printfi_filtered (spaces, "name '%s' (", | |
4833 | TYPE_NAME (type) ? TYPE_NAME (type) : "<NULL>"); | |
d4f3574e | 4834 | gdb_print_host_address (TYPE_NAME (type), gdb_stdout); |
c906108c | 4835 | printf_filtered (")\n"); |
c906108c SS |
4836 | printfi_filtered (spaces, "code 0x%x ", TYPE_CODE (type)); |
4837 | switch (TYPE_CODE (type)) | |
4838 | { | |
c5aa993b JM |
4839 | case TYPE_CODE_UNDEF: |
4840 | printf_filtered ("(TYPE_CODE_UNDEF)"); | |
4841 | break; | |
4842 | case TYPE_CODE_PTR: | |
4843 | printf_filtered ("(TYPE_CODE_PTR)"); | |
4844 | break; | |
4845 | case TYPE_CODE_ARRAY: | |
4846 | printf_filtered ("(TYPE_CODE_ARRAY)"); | |
4847 | break; | |
4848 | case TYPE_CODE_STRUCT: | |
4849 | printf_filtered ("(TYPE_CODE_STRUCT)"); | |
4850 | break; | |
4851 | case TYPE_CODE_UNION: | |
4852 | printf_filtered ("(TYPE_CODE_UNION)"); | |
4853 | break; | |
4854 | case TYPE_CODE_ENUM: | |
4855 | printf_filtered ("(TYPE_CODE_ENUM)"); | |
4856 | break; | |
4f2aea11 MK |
4857 | case TYPE_CODE_FLAGS: |
4858 | printf_filtered ("(TYPE_CODE_FLAGS)"); | |
4859 | break; | |
c5aa993b JM |
4860 | case TYPE_CODE_FUNC: |
4861 | printf_filtered ("(TYPE_CODE_FUNC)"); | |
4862 | break; | |
4863 | case TYPE_CODE_INT: | |
4864 | printf_filtered ("(TYPE_CODE_INT)"); | |
4865 | break; | |
4866 | case TYPE_CODE_FLT: | |
4867 | printf_filtered ("(TYPE_CODE_FLT)"); | |
4868 | break; | |
4869 | case TYPE_CODE_VOID: | |
4870 | printf_filtered ("(TYPE_CODE_VOID)"); | |
4871 | break; | |
4872 | case TYPE_CODE_SET: | |
4873 | printf_filtered ("(TYPE_CODE_SET)"); | |
4874 | break; | |
4875 | case TYPE_CODE_RANGE: | |
4876 | printf_filtered ("(TYPE_CODE_RANGE)"); | |
4877 | break; | |
4878 | case TYPE_CODE_STRING: | |
4879 | printf_filtered ("(TYPE_CODE_STRING)"); | |
4880 | break; | |
4881 | case TYPE_CODE_ERROR: | |
4882 | printf_filtered ("(TYPE_CODE_ERROR)"); | |
4883 | break; | |
0d5de010 DJ |
4884 | case TYPE_CODE_MEMBERPTR: |
4885 | printf_filtered ("(TYPE_CODE_MEMBERPTR)"); | |
4886 | break; | |
4887 | case TYPE_CODE_METHODPTR: | |
4888 | printf_filtered ("(TYPE_CODE_METHODPTR)"); | |
c5aa993b JM |
4889 | break; |
4890 | case TYPE_CODE_METHOD: | |
4891 | printf_filtered ("(TYPE_CODE_METHOD)"); | |
4892 | break; | |
4893 | case TYPE_CODE_REF: | |
4894 | printf_filtered ("(TYPE_CODE_REF)"); | |
4895 | break; | |
4896 | case TYPE_CODE_CHAR: | |
4897 | printf_filtered ("(TYPE_CODE_CHAR)"); | |
4898 | break; | |
4899 | case TYPE_CODE_BOOL: | |
4900 | printf_filtered ("(TYPE_CODE_BOOL)"); | |
4901 | break; | |
e9e79dd9 FF |
4902 | case TYPE_CODE_COMPLEX: |
4903 | printf_filtered ("(TYPE_CODE_COMPLEX)"); | |
4904 | break; | |
c5aa993b JM |
4905 | case TYPE_CODE_TYPEDEF: |
4906 | printf_filtered ("(TYPE_CODE_TYPEDEF)"); | |
4907 | break; | |
5c4e30ca DC |
4908 | case TYPE_CODE_NAMESPACE: |
4909 | printf_filtered ("(TYPE_CODE_NAMESPACE)"); | |
4910 | break; | |
c5aa993b JM |
4911 | default: |
4912 | printf_filtered ("(UNKNOWN TYPE CODE)"); | |
4913 | break; | |
c906108c SS |
4914 | } |
4915 | puts_filtered ("\n"); | |
cc1defb1 | 4916 | printfi_filtered (spaces, "length %s\n", pulongest (TYPE_LENGTH (type))); |
e9bb382b UW |
4917 | if (TYPE_OBJFILE_OWNED (type)) |
4918 | { | |
4919 | printfi_filtered (spaces, "objfile "); | |
4920 | gdb_print_host_address (TYPE_OWNER (type).objfile, gdb_stdout); | |
4921 | } | |
4922 | else | |
4923 | { | |
4924 | printfi_filtered (spaces, "gdbarch "); | |
4925 | gdb_print_host_address (TYPE_OWNER (type).gdbarch, gdb_stdout); | |
4926 | } | |
c906108c SS |
4927 | printf_filtered ("\n"); |
4928 | printfi_filtered (spaces, "target_type "); | |
d4f3574e | 4929 | gdb_print_host_address (TYPE_TARGET_TYPE (type), gdb_stdout); |
c906108c SS |
4930 | printf_filtered ("\n"); |
4931 | if (TYPE_TARGET_TYPE (type) != NULL) | |
4932 | { | |
4933 | recursive_dump_type (TYPE_TARGET_TYPE (type), spaces + 2); | |
4934 | } | |
4935 | printfi_filtered (spaces, "pointer_type "); | |
d4f3574e | 4936 | gdb_print_host_address (TYPE_POINTER_TYPE (type), gdb_stdout); |
c906108c SS |
4937 | printf_filtered ("\n"); |
4938 | printfi_filtered (spaces, "reference_type "); | |
d4f3574e | 4939 | gdb_print_host_address (TYPE_REFERENCE_TYPE (type), gdb_stdout); |
c906108c | 4940 | printf_filtered ("\n"); |
2fdde8f8 DJ |
4941 | printfi_filtered (spaces, "type_chain "); |
4942 | gdb_print_host_address (TYPE_CHAIN (type), gdb_stdout); | |
e9e79dd9 | 4943 | printf_filtered ("\n"); |
7ba81444 MS |
4944 | printfi_filtered (spaces, "instance_flags 0x%x", |
4945 | TYPE_INSTANCE_FLAGS (type)); | |
2fdde8f8 DJ |
4946 | if (TYPE_CONST (type)) |
4947 | { | |
a9ff5f12 | 4948 | puts_filtered (" TYPE_CONST"); |
2fdde8f8 DJ |
4949 | } |
4950 | if (TYPE_VOLATILE (type)) | |
4951 | { | |
a9ff5f12 | 4952 | puts_filtered (" TYPE_VOLATILE"); |
2fdde8f8 DJ |
4953 | } |
4954 | if (TYPE_CODE_SPACE (type)) | |
4955 | { | |
a9ff5f12 | 4956 | puts_filtered (" TYPE_CODE_SPACE"); |
2fdde8f8 DJ |
4957 | } |
4958 | if (TYPE_DATA_SPACE (type)) | |
4959 | { | |
a9ff5f12 | 4960 | puts_filtered (" TYPE_DATA_SPACE"); |
2fdde8f8 | 4961 | } |
8b2dbe47 KB |
4962 | if (TYPE_ADDRESS_CLASS_1 (type)) |
4963 | { | |
a9ff5f12 | 4964 | puts_filtered (" TYPE_ADDRESS_CLASS_1"); |
8b2dbe47 KB |
4965 | } |
4966 | if (TYPE_ADDRESS_CLASS_2 (type)) | |
4967 | { | |
a9ff5f12 | 4968 | puts_filtered (" TYPE_ADDRESS_CLASS_2"); |
8b2dbe47 | 4969 | } |
06d66ee9 TT |
4970 | if (TYPE_RESTRICT (type)) |
4971 | { | |
a9ff5f12 | 4972 | puts_filtered (" TYPE_RESTRICT"); |
06d66ee9 | 4973 | } |
a2c2acaf MW |
4974 | if (TYPE_ATOMIC (type)) |
4975 | { | |
a9ff5f12 | 4976 | puts_filtered (" TYPE_ATOMIC"); |
a2c2acaf | 4977 | } |
2fdde8f8 | 4978 | puts_filtered ("\n"); |
876cecd0 TT |
4979 | |
4980 | printfi_filtered (spaces, "flags"); | |
762a036f | 4981 | if (TYPE_UNSIGNED (type)) |
c906108c | 4982 | { |
a9ff5f12 | 4983 | puts_filtered (" TYPE_UNSIGNED"); |
c906108c | 4984 | } |
762a036f FF |
4985 | if (TYPE_NOSIGN (type)) |
4986 | { | |
a9ff5f12 | 4987 | puts_filtered (" TYPE_NOSIGN"); |
762a036f | 4988 | } |
34877895 PJ |
4989 | if (TYPE_ENDIANITY_NOT_DEFAULT (type)) |
4990 | { | |
4991 | puts_filtered (" TYPE_ENDIANITY_NOT_DEFAULT"); | |
4992 | } | |
762a036f | 4993 | if (TYPE_STUB (type)) |
c906108c | 4994 | { |
a9ff5f12 | 4995 | puts_filtered (" TYPE_STUB"); |
c906108c | 4996 | } |
762a036f FF |
4997 | if (TYPE_TARGET_STUB (type)) |
4998 | { | |
a9ff5f12 | 4999 | puts_filtered (" TYPE_TARGET_STUB"); |
762a036f | 5000 | } |
762a036f FF |
5001 | if (TYPE_PROTOTYPED (type)) |
5002 | { | |
a9ff5f12 | 5003 | puts_filtered (" TYPE_PROTOTYPED"); |
762a036f FF |
5004 | } |
5005 | if (TYPE_INCOMPLETE (type)) | |
5006 | { | |
a9ff5f12 | 5007 | puts_filtered (" TYPE_INCOMPLETE"); |
762a036f | 5008 | } |
762a036f FF |
5009 | if (TYPE_VARARGS (type)) |
5010 | { | |
a9ff5f12 | 5011 | puts_filtered (" TYPE_VARARGS"); |
762a036f | 5012 | } |
f5f8a009 EZ |
5013 | /* This is used for things like AltiVec registers on ppc. Gcc emits |
5014 | an attribute for the array type, which tells whether or not we | |
5015 | have a vector, instead of a regular array. */ | |
5016 | if (TYPE_VECTOR (type)) | |
5017 | { | |
a9ff5f12 | 5018 | puts_filtered (" TYPE_VECTOR"); |
f5f8a009 | 5019 | } |
876cecd0 TT |
5020 | if (TYPE_FIXED_INSTANCE (type)) |
5021 | { | |
5022 | puts_filtered (" TYPE_FIXED_INSTANCE"); | |
5023 | } | |
5024 | if (TYPE_STUB_SUPPORTED (type)) | |
5025 | { | |
5026 | puts_filtered (" TYPE_STUB_SUPPORTED"); | |
5027 | } | |
5028 | if (TYPE_NOTTEXT (type)) | |
5029 | { | |
5030 | puts_filtered (" TYPE_NOTTEXT"); | |
5031 | } | |
c906108c SS |
5032 | puts_filtered ("\n"); |
5033 | printfi_filtered (spaces, "nfields %d ", TYPE_NFIELDS (type)); | |
d4f3574e | 5034 | gdb_print_host_address (TYPE_FIELDS (type), gdb_stdout); |
c906108c SS |
5035 | puts_filtered ("\n"); |
5036 | for (idx = 0; idx < TYPE_NFIELDS (type); idx++) | |
5037 | { | |
14e75d8e JK |
5038 | if (TYPE_CODE (type) == TYPE_CODE_ENUM) |
5039 | printfi_filtered (spaces + 2, | |
5040 | "[%d] enumval %s type ", | |
5041 | idx, plongest (TYPE_FIELD_ENUMVAL (type, idx))); | |
5042 | else | |
5043 | printfi_filtered (spaces + 2, | |
6b850546 DT |
5044 | "[%d] bitpos %s bitsize %d type ", |
5045 | idx, plongest (TYPE_FIELD_BITPOS (type, idx)), | |
14e75d8e | 5046 | TYPE_FIELD_BITSIZE (type, idx)); |
d4f3574e | 5047 | gdb_print_host_address (TYPE_FIELD_TYPE (type, idx), gdb_stdout); |
c906108c SS |
5048 | printf_filtered (" name '%s' (", |
5049 | TYPE_FIELD_NAME (type, idx) != NULL | |
5050 | ? TYPE_FIELD_NAME (type, idx) | |
5051 | : "<NULL>"); | |
d4f3574e | 5052 | gdb_print_host_address (TYPE_FIELD_NAME (type, idx), gdb_stdout); |
c906108c SS |
5053 | printf_filtered (")\n"); |
5054 | if (TYPE_FIELD_TYPE (type, idx) != NULL) | |
5055 | { | |
5056 | recursive_dump_type (TYPE_FIELD_TYPE (type, idx), spaces + 4); | |
5057 | } | |
5058 | } | |
43bbcdc2 PH |
5059 | if (TYPE_CODE (type) == TYPE_CODE_RANGE) |
5060 | { | |
5061 | printfi_filtered (spaces, "low %s%s high %s%s\n", | |
5062 | plongest (TYPE_LOW_BOUND (type)), | |
5063 | TYPE_LOW_BOUND_UNDEFINED (type) ? " (undefined)" : "", | |
5064 | plongest (TYPE_HIGH_BOUND (type)), | |
3e43a32a MS |
5065 | TYPE_HIGH_BOUND_UNDEFINED (type) |
5066 | ? " (undefined)" : ""); | |
43bbcdc2 | 5067 | } |
c906108c | 5068 | |
b4ba55a1 JB |
5069 | switch (TYPE_SPECIFIC_FIELD (type)) |
5070 | { | |
5071 | case TYPE_SPECIFIC_CPLUS_STUFF: | |
5072 | printfi_filtered (spaces, "cplus_stuff "); | |
5073 | gdb_print_host_address (TYPE_CPLUS_SPECIFIC (type), | |
5074 | gdb_stdout); | |
5075 | puts_filtered ("\n"); | |
5076 | print_cplus_stuff (type, spaces); | |
5077 | break; | |
8da61cc4 | 5078 | |
b4ba55a1 JB |
5079 | case TYPE_SPECIFIC_GNAT_STUFF: |
5080 | printfi_filtered (spaces, "gnat_stuff "); | |
5081 | gdb_print_host_address (TYPE_GNAT_SPECIFIC (type), gdb_stdout); | |
5082 | puts_filtered ("\n"); | |
5083 | print_gnat_stuff (type, spaces); | |
5084 | break; | |
701c159d | 5085 | |
b4ba55a1 JB |
5086 | case TYPE_SPECIFIC_FLOATFORMAT: |
5087 | printfi_filtered (spaces, "floatformat "); | |
0db7851f UW |
5088 | if (TYPE_FLOATFORMAT (type) == NULL |
5089 | || TYPE_FLOATFORMAT (type)->name == NULL) | |
b4ba55a1 JB |
5090 | puts_filtered ("(null)"); |
5091 | else | |
0db7851f | 5092 | puts_filtered (TYPE_FLOATFORMAT (type)->name); |
b4ba55a1 JB |
5093 | puts_filtered ("\n"); |
5094 | break; | |
c906108c | 5095 | |
b6cdc2c1 | 5096 | case TYPE_SPECIFIC_FUNC: |
b4ba55a1 JB |
5097 | printfi_filtered (spaces, "calling_convention %d\n", |
5098 | TYPE_CALLING_CONVENTION (type)); | |
b6cdc2c1 | 5099 | /* tail_call_list is not printed. */ |
b4ba55a1 | 5100 | break; |
09e2d7c7 DE |
5101 | |
5102 | case TYPE_SPECIFIC_SELF_TYPE: | |
5103 | printfi_filtered (spaces, "self_type "); | |
5104 | gdb_print_host_address (TYPE_SELF_TYPE (type), gdb_stdout); | |
5105 | puts_filtered ("\n"); | |
5106 | break; | |
c906108c | 5107 | } |
b4ba55a1 | 5108 | |
c906108c SS |
5109 | if (spaces == 0) |
5110 | obstack_free (&dont_print_type_obstack, NULL); | |
5111 | } | |
5212577a | 5112 | \f |
ae5a43e0 DJ |
5113 | /* Trivial helpers for the libiberty hash table, for mapping one |
5114 | type to another. */ | |
5115 | ||
fd90ace4 | 5116 | struct type_pair : public allocate_on_obstack |
ae5a43e0 | 5117 | { |
fd90ace4 YQ |
5118 | type_pair (struct type *old_, struct type *newobj_) |
5119 | : old (old_), newobj (newobj_) | |
5120 | {} | |
5121 | ||
5122 | struct type * const old, * const newobj; | |
ae5a43e0 DJ |
5123 | }; |
5124 | ||
5125 | static hashval_t | |
5126 | type_pair_hash (const void *item) | |
5127 | { | |
9a3c8263 | 5128 | const struct type_pair *pair = (const struct type_pair *) item; |
d8734c88 | 5129 | |
ae5a43e0 DJ |
5130 | return htab_hash_pointer (pair->old); |
5131 | } | |
5132 | ||
5133 | static int | |
5134 | type_pair_eq (const void *item_lhs, const void *item_rhs) | |
5135 | { | |
9a3c8263 SM |
5136 | const struct type_pair *lhs = (const struct type_pair *) item_lhs; |
5137 | const struct type_pair *rhs = (const struct type_pair *) item_rhs; | |
d8734c88 | 5138 | |
ae5a43e0 DJ |
5139 | return lhs->old == rhs->old; |
5140 | } | |
5141 | ||
5142 | /* Allocate the hash table used by copy_type_recursive to walk | |
5143 | types without duplicates. We use OBJFILE's obstack, because | |
5144 | OBJFILE is about to be deleted. */ | |
5145 | ||
5146 | htab_t | |
5147 | create_copied_types_hash (struct objfile *objfile) | |
5148 | { | |
5149 | return htab_create_alloc_ex (1, type_pair_hash, type_pair_eq, | |
5150 | NULL, &objfile->objfile_obstack, | |
5151 | hashtab_obstack_allocate, | |
5152 | dummy_obstack_deallocate); | |
5153 | } | |
5154 | ||
d9823cbb KB |
5155 | /* Recursively copy (deep copy) a dynamic attribute list of a type. */ |
5156 | ||
5157 | static struct dynamic_prop_list * | |
5158 | copy_dynamic_prop_list (struct obstack *objfile_obstack, | |
5159 | struct dynamic_prop_list *list) | |
5160 | { | |
5161 | struct dynamic_prop_list *copy = list; | |
5162 | struct dynamic_prop_list **node_ptr = © | |
5163 | ||
5164 | while (*node_ptr != NULL) | |
5165 | { | |
5166 | struct dynamic_prop_list *node_copy; | |
5167 | ||
224c3ddb SM |
5168 | node_copy = ((struct dynamic_prop_list *) |
5169 | obstack_copy (objfile_obstack, *node_ptr, | |
5170 | sizeof (struct dynamic_prop_list))); | |
283a9958 | 5171 | node_copy->prop = (*node_ptr)->prop; |
d9823cbb KB |
5172 | *node_ptr = node_copy; |
5173 | ||
5174 | node_ptr = &node_copy->next; | |
5175 | } | |
5176 | ||
5177 | return copy; | |
5178 | } | |
5179 | ||
7ba81444 | 5180 | /* Recursively copy (deep copy) TYPE, if it is associated with |
eed8b28a PP |
5181 | OBJFILE. Return a new type owned by the gdbarch associated with the type, a |
5182 | saved type if we have already visited TYPE (using COPIED_TYPES), or TYPE if | |
5183 | it is not associated with OBJFILE. */ | |
ae5a43e0 DJ |
5184 | |
5185 | struct type * | |
7ba81444 MS |
5186 | copy_type_recursive (struct objfile *objfile, |
5187 | struct type *type, | |
ae5a43e0 DJ |
5188 | htab_t copied_types) |
5189 | { | |
ae5a43e0 DJ |
5190 | void **slot; |
5191 | struct type *new_type; | |
5192 | ||
e9bb382b | 5193 | if (! TYPE_OBJFILE_OWNED (type)) |
ae5a43e0 DJ |
5194 | return type; |
5195 | ||
7ba81444 MS |
5196 | /* This type shouldn't be pointing to any types in other objfiles; |
5197 | if it did, the type might disappear unexpectedly. */ | |
ae5a43e0 DJ |
5198 | gdb_assert (TYPE_OBJFILE (type) == objfile); |
5199 | ||
fd90ace4 YQ |
5200 | struct type_pair pair (type, nullptr); |
5201 | ||
ae5a43e0 DJ |
5202 | slot = htab_find_slot (copied_types, &pair, INSERT); |
5203 | if (*slot != NULL) | |
fe978cb0 | 5204 | return ((struct type_pair *) *slot)->newobj; |
ae5a43e0 | 5205 | |
e9bb382b | 5206 | new_type = alloc_type_arch (get_type_arch (type)); |
ae5a43e0 DJ |
5207 | |
5208 | /* We must add the new type to the hash table immediately, in case | |
5209 | we encounter this type again during a recursive call below. */ | |
fd90ace4 YQ |
5210 | struct type_pair *stored |
5211 | = new (&objfile->objfile_obstack) struct type_pair (type, new_type); | |
5212 | ||
ae5a43e0 DJ |
5213 | *slot = stored; |
5214 | ||
876cecd0 TT |
5215 | /* Copy the common fields of types. For the main type, we simply |
5216 | copy the entire thing and then update specific fields as needed. */ | |
5217 | *TYPE_MAIN_TYPE (new_type) = *TYPE_MAIN_TYPE (type); | |
e9bb382b UW |
5218 | TYPE_OBJFILE_OWNED (new_type) = 0; |
5219 | TYPE_OWNER (new_type).gdbarch = get_type_arch (type); | |
876cecd0 | 5220 | |
ae5a43e0 DJ |
5221 | if (TYPE_NAME (type)) |
5222 | TYPE_NAME (new_type) = xstrdup (TYPE_NAME (type)); | |
ae5a43e0 DJ |
5223 | |
5224 | TYPE_INSTANCE_FLAGS (new_type) = TYPE_INSTANCE_FLAGS (type); | |
5225 | TYPE_LENGTH (new_type) = TYPE_LENGTH (type); | |
5226 | ||
5227 | /* Copy the fields. */ | |
ae5a43e0 DJ |
5228 | if (TYPE_NFIELDS (type)) |
5229 | { | |
5230 | int i, nfields; | |
5231 | ||
5232 | nfields = TYPE_NFIELDS (type); | |
2fabdf33 AB |
5233 | TYPE_FIELDS (new_type) = (struct field *) |
5234 | TYPE_ZALLOC (new_type, nfields * sizeof (struct field)); | |
ae5a43e0 DJ |
5235 | for (i = 0; i < nfields; i++) |
5236 | { | |
7ba81444 MS |
5237 | TYPE_FIELD_ARTIFICIAL (new_type, i) = |
5238 | TYPE_FIELD_ARTIFICIAL (type, i); | |
ae5a43e0 DJ |
5239 | TYPE_FIELD_BITSIZE (new_type, i) = TYPE_FIELD_BITSIZE (type, i); |
5240 | if (TYPE_FIELD_TYPE (type, i)) | |
5241 | TYPE_FIELD_TYPE (new_type, i) | |
5242 | = copy_type_recursive (objfile, TYPE_FIELD_TYPE (type, i), | |
5243 | copied_types); | |
5244 | if (TYPE_FIELD_NAME (type, i)) | |
7ba81444 MS |
5245 | TYPE_FIELD_NAME (new_type, i) = |
5246 | xstrdup (TYPE_FIELD_NAME (type, i)); | |
d6a843b5 | 5247 | switch (TYPE_FIELD_LOC_KIND (type, i)) |
ae5a43e0 | 5248 | { |
d6a843b5 JK |
5249 | case FIELD_LOC_KIND_BITPOS: |
5250 | SET_FIELD_BITPOS (TYPE_FIELD (new_type, i), | |
5251 | TYPE_FIELD_BITPOS (type, i)); | |
5252 | break; | |
14e75d8e JK |
5253 | case FIELD_LOC_KIND_ENUMVAL: |
5254 | SET_FIELD_ENUMVAL (TYPE_FIELD (new_type, i), | |
5255 | TYPE_FIELD_ENUMVAL (type, i)); | |
5256 | break; | |
d6a843b5 JK |
5257 | case FIELD_LOC_KIND_PHYSADDR: |
5258 | SET_FIELD_PHYSADDR (TYPE_FIELD (new_type, i), | |
5259 | TYPE_FIELD_STATIC_PHYSADDR (type, i)); | |
5260 | break; | |
5261 | case FIELD_LOC_KIND_PHYSNAME: | |
5262 | SET_FIELD_PHYSNAME (TYPE_FIELD (new_type, i), | |
5263 | xstrdup (TYPE_FIELD_STATIC_PHYSNAME (type, | |
5264 | i))); | |
5265 | break; | |
5266 | default: | |
5267 | internal_error (__FILE__, __LINE__, | |
5268 | _("Unexpected type field location kind: %d"), | |
5269 | TYPE_FIELD_LOC_KIND (type, i)); | |
ae5a43e0 DJ |
5270 | } |
5271 | } | |
5272 | } | |
5273 | ||
0963b4bd | 5274 | /* For range types, copy the bounds information. */ |
43bbcdc2 PH |
5275 | if (TYPE_CODE (type) == TYPE_CODE_RANGE) |
5276 | { | |
2fabdf33 AB |
5277 | TYPE_RANGE_DATA (new_type) = (struct range_bounds *) |
5278 | TYPE_ALLOC (new_type, sizeof (struct range_bounds)); | |
43bbcdc2 PH |
5279 | *TYPE_RANGE_DATA (new_type) = *TYPE_RANGE_DATA (type); |
5280 | } | |
5281 | ||
d9823cbb KB |
5282 | if (TYPE_DYN_PROP_LIST (type) != NULL) |
5283 | TYPE_DYN_PROP_LIST (new_type) | |
5284 | = copy_dynamic_prop_list (&objfile->objfile_obstack, | |
5285 | TYPE_DYN_PROP_LIST (type)); | |
5286 | ||
3cdcd0ce | 5287 | |
ae5a43e0 DJ |
5288 | /* Copy pointers to other types. */ |
5289 | if (TYPE_TARGET_TYPE (type)) | |
7ba81444 MS |
5290 | TYPE_TARGET_TYPE (new_type) = |
5291 | copy_type_recursive (objfile, | |
5292 | TYPE_TARGET_TYPE (type), | |
5293 | copied_types); | |
f6b3afbf | 5294 | |
ae5a43e0 DJ |
5295 | /* Maybe copy the type_specific bits. |
5296 | ||
5297 | NOTE drow/2005-12-09: We do not copy the C++-specific bits like | |
5298 | base classes and methods. There's no fundamental reason why we | |
5299 | can't, but at the moment it is not needed. */ | |
5300 | ||
f6b3afbf DE |
5301 | switch (TYPE_SPECIFIC_FIELD (type)) |
5302 | { | |
5303 | case TYPE_SPECIFIC_NONE: | |
5304 | break; | |
5305 | case TYPE_SPECIFIC_FUNC: | |
5306 | INIT_FUNC_SPECIFIC (new_type); | |
5307 | TYPE_CALLING_CONVENTION (new_type) = TYPE_CALLING_CONVENTION (type); | |
5308 | TYPE_NO_RETURN (new_type) = TYPE_NO_RETURN (type); | |
5309 | TYPE_TAIL_CALL_LIST (new_type) = NULL; | |
5310 | break; | |
5311 | case TYPE_SPECIFIC_FLOATFORMAT: | |
5312 | TYPE_FLOATFORMAT (new_type) = TYPE_FLOATFORMAT (type); | |
5313 | break; | |
5314 | case TYPE_SPECIFIC_CPLUS_STUFF: | |
5315 | INIT_CPLUS_SPECIFIC (new_type); | |
5316 | break; | |
5317 | case TYPE_SPECIFIC_GNAT_STUFF: | |
5318 | INIT_GNAT_SPECIFIC (new_type); | |
5319 | break; | |
09e2d7c7 DE |
5320 | case TYPE_SPECIFIC_SELF_TYPE: |
5321 | set_type_self_type (new_type, | |
5322 | copy_type_recursive (objfile, TYPE_SELF_TYPE (type), | |
5323 | copied_types)); | |
5324 | break; | |
f6b3afbf DE |
5325 | default: |
5326 | gdb_assert_not_reached ("bad type_specific_kind"); | |
5327 | } | |
ae5a43e0 DJ |
5328 | |
5329 | return new_type; | |
5330 | } | |
5331 | ||
4af88198 JB |
5332 | /* Make a copy of the given TYPE, except that the pointer & reference |
5333 | types are not preserved. | |
5334 | ||
5335 | This function assumes that the given type has an associated objfile. | |
5336 | This objfile is used to allocate the new type. */ | |
5337 | ||
5338 | struct type * | |
5339 | copy_type (const struct type *type) | |
5340 | { | |
5341 | struct type *new_type; | |
5342 | ||
e9bb382b | 5343 | gdb_assert (TYPE_OBJFILE_OWNED (type)); |
4af88198 | 5344 | |
e9bb382b | 5345 | new_type = alloc_type_copy (type); |
4af88198 JB |
5346 | TYPE_INSTANCE_FLAGS (new_type) = TYPE_INSTANCE_FLAGS (type); |
5347 | TYPE_LENGTH (new_type) = TYPE_LENGTH (type); | |
5348 | memcpy (TYPE_MAIN_TYPE (new_type), TYPE_MAIN_TYPE (type), | |
5349 | sizeof (struct main_type)); | |
d9823cbb KB |
5350 | if (TYPE_DYN_PROP_LIST (type) != NULL) |
5351 | TYPE_DYN_PROP_LIST (new_type) | |
5352 | = copy_dynamic_prop_list (&TYPE_OBJFILE (type) -> objfile_obstack, | |
5353 | TYPE_DYN_PROP_LIST (type)); | |
4af88198 JB |
5354 | |
5355 | return new_type; | |
5356 | } | |
5212577a | 5357 | \f |
e9bb382b UW |
5358 | /* Helper functions to initialize architecture-specific types. */ |
5359 | ||
5360 | /* Allocate a type structure associated with GDBARCH and set its | |
5361 | CODE, LENGTH, and NAME fields. */ | |
5212577a | 5362 | |
e9bb382b UW |
5363 | struct type * |
5364 | arch_type (struct gdbarch *gdbarch, | |
77b7c781 | 5365 | enum type_code code, int bit, const char *name) |
e9bb382b UW |
5366 | { |
5367 | struct type *type; | |
5368 | ||
5369 | type = alloc_type_arch (gdbarch); | |
ae438bc5 | 5370 | set_type_code (type, code); |
77b7c781 UW |
5371 | gdb_assert ((bit % TARGET_CHAR_BIT) == 0); |
5372 | TYPE_LENGTH (type) = bit / TARGET_CHAR_BIT; | |
e9bb382b UW |
5373 | |
5374 | if (name) | |
6c214e7c | 5375 | TYPE_NAME (type) = gdbarch_obstack_strdup (gdbarch, name); |
e9bb382b UW |
5376 | |
5377 | return type; | |
5378 | } | |
5379 | ||
5380 | /* Allocate a TYPE_CODE_INT type structure associated with GDBARCH. | |
5381 | BIT is the type size in bits. If UNSIGNED_P is non-zero, set | |
5382 | the type's TYPE_UNSIGNED flag. NAME is the type name. */ | |
5212577a | 5383 | |
e9bb382b UW |
5384 | struct type * |
5385 | arch_integer_type (struct gdbarch *gdbarch, | |
695bfa52 | 5386 | int bit, int unsigned_p, const char *name) |
e9bb382b UW |
5387 | { |
5388 | struct type *t; | |
5389 | ||
77b7c781 | 5390 | t = arch_type (gdbarch, TYPE_CODE_INT, bit, name); |
e9bb382b UW |
5391 | if (unsigned_p) |
5392 | TYPE_UNSIGNED (t) = 1; | |
e9bb382b UW |
5393 | |
5394 | return t; | |
5395 | } | |
5396 | ||
5397 | /* Allocate a TYPE_CODE_CHAR type structure associated with GDBARCH. | |
5398 | BIT is the type size in bits. If UNSIGNED_P is non-zero, set | |
5399 | the type's TYPE_UNSIGNED flag. NAME is the type name. */ | |
5212577a | 5400 | |
e9bb382b UW |
5401 | struct type * |
5402 | arch_character_type (struct gdbarch *gdbarch, | |
695bfa52 | 5403 | int bit, int unsigned_p, const char *name) |
e9bb382b UW |
5404 | { |
5405 | struct type *t; | |
5406 | ||
77b7c781 | 5407 | t = arch_type (gdbarch, TYPE_CODE_CHAR, bit, name); |
e9bb382b UW |
5408 | if (unsigned_p) |
5409 | TYPE_UNSIGNED (t) = 1; | |
5410 | ||
5411 | return t; | |
5412 | } | |
5413 | ||
5414 | /* Allocate a TYPE_CODE_BOOL type structure associated with GDBARCH. | |
5415 | BIT is the type size in bits. If UNSIGNED_P is non-zero, set | |
5416 | the type's TYPE_UNSIGNED flag. NAME is the type name. */ | |
5212577a | 5417 | |
e9bb382b UW |
5418 | struct type * |
5419 | arch_boolean_type (struct gdbarch *gdbarch, | |
695bfa52 | 5420 | int bit, int unsigned_p, const char *name) |
e9bb382b UW |
5421 | { |
5422 | struct type *t; | |
5423 | ||
77b7c781 | 5424 | t = arch_type (gdbarch, TYPE_CODE_BOOL, bit, name); |
e9bb382b UW |
5425 | if (unsigned_p) |
5426 | TYPE_UNSIGNED (t) = 1; | |
5427 | ||
5428 | return t; | |
5429 | } | |
5430 | ||
5431 | /* Allocate a TYPE_CODE_FLT type structure associated with GDBARCH. | |
5432 | BIT is the type size in bits; if BIT equals -1, the size is | |
5433 | determined by the floatformat. NAME is the type name. Set the | |
5434 | TYPE_FLOATFORMAT from FLOATFORMATS. */ | |
5212577a | 5435 | |
27067745 | 5436 | struct type * |
e9bb382b | 5437 | arch_float_type (struct gdbarch *gdbarch, |
695bfa52 TT |
5438 | int bit, const char *name, |
5439 | const struct floatformat **floatformats) | |
8da61cc4 | 5440 | { |
0db7851f | 5441 | const struct floatformat *fmt = floatformats[gdbarch_byte_order (gdbarch)]; |
8da61cc4 DJ |
5442 | struct type *t; |
5443 | ||
0db7851f | 5444 | bit = verify_floatformat (bit, fmt); |
77b7c781 | 5445 | t = arch_type (gdbarch, TYPE_CODE_FLT, bit, name); |
0db7851f | 5446 | TYPE_FLOATFORMAT (t) = fmt; |
b79497cb | 5447 | |
8da61cc4 DJ |
5448 | return t; |
5449 | } | |
5450 | ||
88dfca6c UW |
5451 | /* Allocate a TYPE_CODE_DECFLOAT type structure associated with GDBARCH. |
5452 | BIT is the type size in bits. NAME is the type name. */ | |
5453 | ||
5454 | struct type * | |
5455 | arch_decfloat_type (struct gdbarch *gdbarch, int bit, const char *name) | |
5456 | { | |
5457 | struct type *t; | |
5458 | ||
77b7c781 | 5459 | t = arch_type (gdbarch, TYPE_CODE_DECFLOAT, bit, name); |
88dfca6c UW |
5460 | return t; |
5461 | } | |
5462 | ||
88dfca6c UW |
5463 | /* Allocate a TYPE_CODE_PTR type structure associated with GDBARCH. |
5464 | BIT is the pointer type size in bits. NAME is the type name. | |
5465 | TARGET_TYPE is the pointer target type. Always sets the pointer type's | |
5466 | TYPE_UNSIGNED flag. */ | |
5467 | ||
5468 | struct type * | |
5469 | arch_pointer_type (struct gdbarch *gdbarch, | |
5470 | int bit, const char *name, struct type *target_type) | |
5471 | { | |
5472 | struct type *t; | |
5473 | ||
77b7c781 | 5474 | t = arch_type (gdbarch, TYPE_CODE_PTR, bit, name); |
88dfca6c UW |
5475 | TYPE_TARGET_TYPE (t) = target_type; |
5476 | TYPE_UNSIGNED (t) = 1; | |
5477 | return t; | |
5478 | } | |
5479 | ||
e9bb382b | 5480 | /* Allocate a TYPE_CODE_FLAGS type structure associated with GDBARCH. |
77b7c781 | 5481 | NAME is the type name. BIT is the size of the flag word in bits. */ |
5212577a | 5482 | |
e9bb382b | 5483 | struct type * |
77b7c781 | 5484 | arch_flags_type (struct gdbarch *gdbarch, const char *name, int bit) |
e9bb382b | 5485 | { |
e9bb382b UW |
5486 | struct type *type; |
5487 | ||
77b7c781 | 5488 | type = arch_type (gdbarch, TYPE_CODE_FLAGS, bit, name); |
e9bb382b | 5489 | TYPE_UNSIGNED (type) = 1; |
81516450 DE |
5490 | TYPE_NFIELDS (type) = 0; |
5491 | /* Pre-allocate enough space assuming every field is one bit. */ | |
224c3ddb | 5492 | TYPE_FIELDS (type) |
77b7c781 | 5493 | = (struct field *) TYPE_ZALLOC (type, bit * sizeof (struct field)); |
e9bb382b UW |
5494 | |
5495 | return type; | |
5496 | } | |
5497 | ||
5498 | /* Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at | |
81516450 DE |
5499 | position BITPOS is called NAME. Pass NAME as "" for fields that |
5500 | should not be printed. */ | |
5501 | ||
5502 | void | |
5503 | append_flags_type_field (struct type *type, int start_bitpos, int nr_bits, | |
695bfa52 | 5504 | struct type *field_type, const char *name) |
81516450 DE |
5505 | { |
5506 | int type_bitsize = TYPE_LENGTH (type) * TARGET_CHAR_BIT; | |
5507 | int field_nr = TYPE_NFIELDS (type); | |
5508 | ||
5509 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_FLAGS); | |
5510 | gdb_assert (TYPE_NFIELDS (type) + 1 <= type_bitsize); | |
5511 | gdb_assert (start_bitpos >= 0 && start_bitpos < type_bitsize); | |
5512 | gdb_assert (nr_bits >= 1 && nr_bits <= type_bitsize); | |
5513 | gdb_assert (name != NULL); | |
5514 | ||
5515 | TYPE_FIELD_NAME (type, field_nr) = xstrdup (name); | |
5516 | TYPE_FIELD_TYPE (type, field_nr) = field_type; | |
5517 | SET_FIELD_BITPOS (TYPE_FIELD (type, field_nr), start_bitpos); | |
5518 | TYPE_FIELD_BITSIZE (type, field_nr) = nr_bits; | |
5519 | ++TYPE_NFIELDS (type); | |
5520 | } | |
5521 | ||
5522 | /* Special version of append_flags_type_field to add a flag field. | |
5523 | Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at | |
e9bb382b | 5524 | position BITPOS is called NAME. */ |
5212577a | 5525 | |
e9bb382b | 5526 | void |
695bfa52 | 5527 | append_flags_type_flag (struct type *type, int bitpos, const char *name) |
e9bb382b | 5528 | { |
81516450 | 5529 | struct gdbarch *gdbarch = get_type_arch (type); |
e9bb382b | 5530 | |
81516450 DE |
5531 | append_flags_type_field (type, bitpos, 1, |
5532 | builtin_type (gdbarch)->builtin_bool, | |
5533 | name); | |
e9bb382b UW |
5534 | } |
5535 | ||
5536 | /* Allocate a TYPE_CODE_STRUCT or TYPE_CODE_UNION type structure (as | |
5537 | specified by CODE) associated with GDBARCH. NAME is the type name. */ | |
5212577a | 5538 | |
e9bb382b | 5539 | struct type * |
695bfa52 TT |
5540 | arch_composite_type (struct gdbarch *gdbarch, const char *name, |
5541 | enum type_code code) | |
e9bb382b UW |
5542 | { |
5543 | struct type *t; | |
d8734c88 | 5544 | |
e9bb382b UW |
5545 | gdb_assert (code == TYPE_CODE_STRUCT || code == TYPE_CODE_UNION); |
5546 | t = arch_type (gdbarch, code, 0, NULL); | |
e86ca25f | 5547 | TYPE_NAME (t) = name; |
e9bb382b UW |
5548 | INIT_CPLUS_SPECIFIC (t); |
5549 | return t; | |
5550 | } | |
5551 | ||
5552 | /* Add new field with name NAME and type FIELD to composite type T. | |
f5dff777 DJ |
5553 | Do not set the field's position or adjust the type's length; |
5554 | the caller should do so. Return the new field. */ | |
5212577a | 5555 | |
f5dff777 | 5556 | struct field * |
695bfa52 | 5557 | append_composite_type_field_raw (struct type *t, const char *name, |
f5dff777 | 5558 | struct type *field) |
e9bb382b UW |
5559 | { |
5560 | struct field *f; | |
d8734c88 | 5561 | |
e9bb382b | 5562 | TYPE_NFIELDS (t) = TYPE_NFIELDS (t) + 1; |
224c3ddb SM |
5563 | TYPE_FIELDS (t) = XRESIZEVEC (struct field, TYPE_FIELDS (t), |
5564 | TYPE_NFIELDS (t)); | |
e9bb382b UW |
5565 | f = &(TYPE_FIELDS (t)[TYPE_NFIELDS (t) - 1]); |
5566 | memset (f, 0, sizeof f[0]); | |
5567 | FIELD_TYPE (f[0]) = field; | |
5568 | FIELD_NAME (f[0]) = name; | |
f5dff777 DJ |
5569 | return f; |
5570 | } | |
5571 | ||
5572 | /* Add new field with name NAME and type FIELD to composite type T. | |
5573 | ALIGNMENT (if non-zero) specifies the minimum field alignment. */ | |
5212577a | 5574 | |
f5dff777 | 5575 | void |
695bfa52 | 5576 | append_composite_type_field_aligned (struct type *t, const char *name, |
f5dff777 DJ |
5577 | struct type *field, int alignment) |
5578 | { | |
5579 | struct field *f = append_composite_type_field_raw (t, name, field); | |
d8734c88 | 5580 | |
e9bb382b UW |
5581 | if (TYPE_CODE (t) == TYPE_CODE_UNION) |
5582 | { | |
5583 | if (TYPE_LENGTH (t) < TYPE_LENGTH (field)) | |
5584 | TYPE_LENGTH (t) = TYPE_LENGTH (field); | |
5585 | } | |
5586 | else if (TYPE_CODE (t) == TYPE_CODE_STRUCT) | |
5587 | { | |
5588 | TYPE_LENGTH (t) = TYPE_LENGTH (t) + TYPE_LENGTH (field); | |
5589 | if (TYPE_NFIELDS (t) > 1) | |
5590 | { | |
f41f5e61 PA |
5591 | SET_FIELD_BITPOS (f[0], |
5592 | (FIELD_BITPOS (f[-1]) | |
5593 | + (TYPE_LENGTH (FIELD_TYPE (f[-1])) | |
5594 | * TARGET_CHAR_BIT))); | |
e9bb382b UW |
5595 | |
5596 | if (alignment) | |
5597 | { | |
86c3c1fc AB |
5598 | int left; |
5599 | ||
5600 | alignment *= TARGET_CHAR_BIT; | |
5601 | left = FIELD_BITPOS (f[0]) % alignment; | |
d8734c88 | 5602 | |
e9bb382b UW |
5603 | if (left) |
5604 | { | |
f41f5e61 | 5605 | SET_FIELD_BITPOS (f[0], FIELD_BITPOS (f[0]) + (alignment - left)); |
86c3c1fc | 5606 | TYPE_LENGTH (t) += (alignment - left) / TARGET_CHAR_BIT; |
e9bb382b UW |
5607 | } |
5608 | } | |
5609 | } | |
5610 | } | |
5611 | } | |
5612 | ||
5613 | /* Add new field with name NAME and type FIELD to composite type T. */ | |
5212577a | 5614 | |
e9bb382b | 5615 | void |
695bfa52 | 5616 | append_composite_type_field (struct type *t, const char *name, |
e9bb382b UW |
5617 | struct type *field) |
5618 | { | |
5619 | append_composite_type_field_aligned (t, name, field, 0); | |
5620 | } | |
5621 | ||
000177f0 AC |
5622 | static struct gdbarch_data *gdbtypes_data; |
5623 | ||
5624 | const struct builtin_type * | |
5625 | builtin_type (struct gdbarch *gdbarch) | |
5626 | { | |
9a3c8263 | 5627 | return (const struct builtin_type *) gdbarch_data (gdbarch, gdbtypes_data); |
000177f0 AC |
5628 | } |
5629 | ||
5630 | static void * | |
5631 | gdbtypes_post_init (struct gdbarch *gdbarch) | |
5632 | { | |
5633 | struct builtin_type *builtin_type | |
5634 | = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct builtin_type); | |
5635 | ||
46bf5051 | 5636 | /* Basic types. */ |
e9bb382b | 5637 | builtin_type->builtin_void |
77b7c781 | 5638 | = arch_type (gdbarch, TYPE_CODE_VOID, TARGET_CHAR_BIT, "void"); |
e9bb382b UW |
5639 | builtin_type->builtin_char |
5640 | = arch_integer_type (gdbarch, TARGET_CHAR_BIT, | |
5641 | !gdbarch_char_signed (gdbarch), "char"); | |
c413c448 | 5642 | TYPE_NOSIGN (builtin_type->builtin_char) = 1; |
e9bb382b UW |
5643 | builtin_type->builtin_signed_char |
5644 | = arch_integer_type (gdbarch, TARGET_CHAR_BIT, | |
5645 | 0, "signed char"); | |
5646 | builtin_type->builtin_unsigned_char | |
5647 | = arch_integer_type (gdbarch, TARGET_CHAR_BIT, | |
5648 | 1, "unsigned char"); | |
5649 | builtin_type->builtin_short | |
5650 | = arch_integer_type (gdbarch, gdbarch_short_bit (gdbarch), | |
5651 | 0, "short"); | |
5652 | builtin_type->builtin_unsigned_short | |
5653 | = arch_integer_type (gdbarch, gdbarch_short_bit (gdbarch), | |
5654 | 1, "unsigned short"); | |
5655 | builtin_type->builtin_int | |
5656 | = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch), | |
5657 | 0, "int"); | |
5658 | builtin_type->builtin_unsigned_int | |
5659 | = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch), | |
5660 | 1, "unsigned int"); | |
5661 | builtin_type->builtin_long | |
5662 | = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch), | |
5663 | 0, "long"); | |
5664 | builtin_type->builtin_unsigned_long | |
5665 | = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch), | |
5666 | 1, "unsigned long"); | |
5667 | builtin_type->builtin_long_long | |
5668 | = arch_integer_type (gdbarch, gdbarch_long_long_bit (gdbarch), | |
5669 | 0, "long long"); | |
5670 | builtin_type->builtin_unsigned_long_long | |
5671 | = arch_integer_type (gdbarch, gdbarch_long_long_bit (gdbarch), | |
5672 | 1, "unsigned long long"); | |
a6d0f249 AH |
5673 | builtin_type->builtin_half |
5674 | = arch_float_type (gdbarch, gdbarch_half_bit (gdbarch), | |
5675 | "half", gdbarch_half_format (gdbarch)); | |
70bd8e24 | 5676 | builtin_type->builtin_float |
e9bb382b | 5677 | = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch), |
27067745 | 5678 | "float", gdbarch_float_format (gdbarch)); |
70bd8e24 | 5679 | builtin_type->builtin_double |
e9bb382b | 5680 | = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch), |
27067745 | 5681 | "double", gdbarch_double_format (gdbarch)); |
70bd8e24 | 5682 | builtin_type->builtin_long_double |
e9bb382b | 5683 | = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch), |
27067745 | 5684 | "long double", gdbarch_long_double_format (gdbarch)); |
70bd8e24 | 5685 | builtin_type->builtin_complex |
5b930b45 | 5686 | = init_complex_type ("complex", builtin_type->builtin_float); |
70bd8e24 | 5687 | builtin_type->builtin_double_complex |
5b930b45 | 5688 | = init_complex_type ("double complex", builtin_type->builtin_double); |
e9bb382b | 5689 | builtin_type->builtin_string |
77b7c781 | 5690 | = arch_type (gdbarch, TYPE_CODE_STRING, TARGET_CHAR_BIT, "string"); |
e9bb382b | 5691 | builtin_type->builtin_bool |
77b7c781 | 5692 | = arch_type (gdbarch, TYPE_CODE_BOOL, TARGET_CHAR_BIT, "bool"); |
000177f0 | 5693 | |
7678ef8f TJB |
5694 | /* The following three are about decimal floating point types, which |
5695 | are 32-bits, 64-bits and 128-bits respectively. */ | |
5696 | builtin_type->builtin_decfloat | |
88dfca6c | 5697 | = arch_decfloat_type (gdbarch, 32, "_Decimal32"); |
7678ef8f | 5698 | builtin_type->builtin_decdouble |
88dfca6c | 5699 | = arch_decfloat_type (gdbarch, 64, "_Decimal64"); |
7678ef8f | 5700 | builtin_type->builtin_declong |
88dfca6c | 5701 | = arch_decfloat_type (gdbarch, 128, "_Decimal128"); |
7678ef8f | 5702 | |
69feb676 | 5703 | /* "True" character types. */ |
e9bb382b UW |
5704 | builtin_type->builtin_true_char |
5705 | = arch_character_type (gdbarch, TARGET_CHAR_BIT, 0, "true character"); | |
5706 | builtin_type->builtin_true_unsigned_char | |
5707 | = arch_character_type (gdbarch, TARGET_CHAR_BIT, 1, "true character"); | |
69feb676 | 5708 | |
df4df182 | 5709 | /* Fixed-size integer types. */ |
e9bb382b UW |
5710 | builtin_type->builtin_int0 |
5711 | = arch_integer_type (gdbarch, 0, 0, "int0_t"); | |
5712 | builtin_type->builtin_int8 | |
5713 | = arch_integer_type (gdbarch, 8, 0, "int8_t"); | |
5714 | builtin_type->builtin_uint8 | |
5715 | = arch_integer_type (gdbarch, 8, 1, "uint8_t"); | |
5716 | builtin_type->builtin_int16 | |
5717 | = arch_integer_type (gdbarch, 16, 0, "int16_t"); | |
5718 | builtin_type->builtin_uint16 | |
5719 | = arch_integer_type (gdbarch, 16, 1, "uint16_t"); | |
d1908f2d JD |
5720 | builtin_type->builtin_int24 |
5721 | = arch_integer_type (gdbarch, 24, 0, "int24_t"); | |
5722 | builtin_type->builtin_uint24 | |
5723 | = arch_integer_type (gdbarch, 24, 1, "uint24_t"); | |
e9bb382b UW |
5724 | builtin_type->builtin_int32 |
5725 | = arch_integer_type (gdbarch, 32, 0, "int32_t"); | |
5726 | builtin_type->builtin_uint32 | |
5727 | = arch_integer_type (gdbarch, 32, 1, "uint32_t"); | |
5728 | builtin_type->builtin_int64 | |
5729 | = arch_integer_type (gdbarch, 64, 0, "int64_t"); | |
5730 | builtin_type->builtin_uint64 | |
5731 | = arch_integer_type (gdbarch, 64, 1, "uint64_t"); | |
5732 | builtin_type->builtin_int128 | |
5733 | = arch_integer_type (gdbarch, 128, 0, "int128_t"); | |
5734 | builtin_type->builtin_uint128 | |
5735 | = arch_integer_type (gdbarch, 128, 1, "uint128_t"); | |
2844d6b5 KW |
5736 | TYPE_INSTANCE_FLAGS (builtin_type->builtin_int8) |= |
5737 | TYPE_INSTANCE_FLAG_NOTTEXT; | |
5738 | TYPE_INSTANCE_FLAGS (builtin_type->builtin_uint8) |= | |
5739 | TYPE_INSTANCE_FLAG_NOTTEXT; | |
df4df182 | 5740 | |
9a22f0d0 PM |
5741 | /* Wide character types. */ |
5742 | builtin_type->builtin_char16 | |
53e710ac | 5743 | = arch_integer_type (gdbarch, 16, 1, "char16_t"); |
9a22f0d0 | 5744 | builtin_type->builtin_char32 |
53e710ac | 5745 | = arch_integer_type (gdbarch, 32, 1, "char32_t"); |
53375380 PA |
5746 | builtin_type->builtin_wchar |
5747 | = arch_integer_type (gdbarch, gdbarch_wchar_bit (gdbarch), | |
5748 | !gdbarch_wchar_signed (gdbarch), "wchar_t"); | |
9a22f0d0 | 5749 | |
46bf5051 | 5750 | /* Default data/code pointer types. */ |
e9bb382b UW |
5751 | builtin_type->builtin_data_ptr |
5752 | = lookup_pointer_type (builtin_type->builtin_void); | |
5753 | builtin_type->builtin_func_ptr | |
5754 | = lookup_pointer_type (lookup_function_type (builtin_type->builtin_void)); | |
0875794a JK |
5755 | builtin_type->builtin_func_func |
5756 | = lookup_function_type (builtin_type->builtin_func_ptr); | |
46bf5051 | 5757 | |
78267919 | 5758 | /* This type represents a GDB internal function. */ |
e9bb382b UW |
5759 | builtin_type->internal_fn |
5760 | = arch_type (gdbarch, TYPE_CODE_INTERNAL_FUNCTION, 0, | |
5761 | "<internal function>"); | |
78267919 | 5762 | |
e81e7f5e SC |
5763 | /* This type represents an xmethod. */ |
5764 | builtin_type->xmethod | |
5765 | = arch_type (gdbarch, TYPE_CODE_XMETHOD, 0, "<xmethod>"); | |
5766 | ||
46bf5051 UW |
5767 | return builtin_type; |
5768 | } | |
5769 | ||
46bf5051 UW |
5770 | /* This set of objfile-based types is intended to be used by symbol |
5771 | readers as basic types. */ | |
5772 | ||
7a102139 TT |
5773 | static const struct objfile_key<struct objfile_type, |
5774 | gdb::noop_deleter<struct objfile_type>> | |
5775 | objfile_type_data; | |
46bf5051 UW |
5776 | |
5777 | const struct objfile_type * | |
5778 | objfile_type (struct objfile *objfile) | |
5779 | { | |
5780 | struct gdbarch *gdbarch; | |
7a102139 | 5781 | struct objfile_type *objfile_type = objfile_type_data.get (objfile); |
46bf5051 UW |
5782 | |
5783 | if (objfile_type) | |
5784 | return objfile_type; | |
5785 | ||
5786 | objfile_type = OBSTACK_CALLOC (&objfile->objfile_obstack, | |
5787 | 1, struct objfile_type); | |
5788 | ||
5789 | /* Use the objfile architecture to determine basic type properties. */ | |
08feed99 | 5790 | gdbarch = objfile->arch (); |
46bf5051 UW |
5791 | |
5792 | /* Basic types. */ | |
5793 | objfile_type->builtin_void | |
77b7c781 | 5794 | = init_type (objfile, TYPE_CODE_VOID, TARGET_CHAR_BIT, "void"); |
46bf5051 | 5795 | objfile_type->builtin_char |
19f392bc UW |
5796 | = init_integer_type (objfile, TARGET_CHAR_BIT, |
5797 | !gdbarch_char_signed (gdbarch), "char"); | |
c413c448 | 5798 | TYPE_NOSIGN (objfile_type->builtin_char) = 1; |
46bf5051 | 5799 | objfile_type->builtin_signed_char |
19f392bc UW |
5800 | = init_integer_type (objfile, TARGET_CHAR_BIT, |
5801 | 0, "signed char"); | |
46bf5051 | 5802 | objfile_type->builtin_unsigned_char |
19f392bc UW |
5803 | = init_integer_type (objfile, TARGET_CHAR_BIT, |
5804 | 1, "unsigned char"); | |
46bf5051 | 5805 | objfile_type->builtin_short |
19f392bc UW |
5806 | = init_integer_type (objfile, gdbarch_short_bit (gdbarch), |
5807 | 0, "short"); | |
46bf5051 | 5808 | objfile_type->builtin_unsigned_short |
19f392bc UW |
5809 | = init_integer_type (objfile, gdbarch_short_bit (gdbarch), |
5810 | 1, "unsigned short"); | |
46bf5051 | 5811 | objfile_type->builtin_int |
19f392bc UW |
5812 | = init_integer_type (objfile, gdbarch_int_bit (gdbarch), |
5813 | 0, "int"); | |
46bf5051 | 5814 | objfile_type->builtin_unsigned_int |
19f392bc UW |
5815 | = init_integer_type (objfile, gdbarch_int_bit (gdbarch), |
5816 | 1, "unsigned int"); | |
46bf5051 | 5817 | objfile_type->builtin_long |
19f392bc UW |
5818 | = init_integer_type (objfile, gdbarch_long_bit (gdbarch), |
5819 | 0, "long"); | |
46bf5051 | 5820 | objfile_type->builtin_unsigned_long |
19f392bc UW |
5821 | = init_integer_type (objfile, gdbarch_long_bit (gdbarch), |
5822 | 1, "unsigned long"); | |
46bf5051 | 5823 | objfile_type->builtin_long_long |
19f392bc UW |
5824 | = init_integer_type (objfile, gdbarch_long_long_bit (gdbarch), |
5825 | 0, "long long"); | |
46bf5051 | 5826 | objfile_type->builtin_unsigned_long_long |
19f392bc UW |
5827 | = init_integer_type (objfile, gdbarch_long_long_bit (gdbarch), |
5828 | 1, "unsigned long long"); | |
46bf5051 | 5829 | objfile_type->builtin_float |
19f392bc UW |
5830 | = init_float_type (objfile, gdbarch_float_bit (gdbarch), |
5831 | "float", gdbarch_float_format (gdbarch)); | |
46bf5051 | 5832 | objfile_type->builtin_double |
19f392bc UW |
5833 | = init_float_type (objfile, gdbarch_double_bit (gdbarch), |
5834 | "double", gdbarch_double_format (gdbarch)); | |
46bf5051 | 5835 | objfile_type->builtin_long_double |
19f392bc UW |
5836 | = init_float_type (objfile, gdbarch_long_double_bit (gdbarch), |
5837 | "long double", gdbarch_long_double_format (gdbarch)); | |
46bf5051 UW |
5838 | |
5839 | /* This type represents a type that was unrecognized in symbol read-in. */ | |
5840 | objfile_type->builtin_error | |
19f392bc | 5841 | = init_type (objfile, TYPE_CODE_ERROR, 0, "<unknown type>"); |
46bf5051 UW |
5842 | |
5843 | /* The following set of types is used for symbols with no | |
5844 | debug information. */ | |
5845 | objfile_type->nodebug_text_symbol | |
77b7c781 | 5846 | = init_type (objfile, TYPE_CODE_FUNC, TARGET_CHAR_BIT, |
19f392bc | 5847 | "<text variable, no debug info>"); |
0875794a | 5848 | objfile_type->nodebug_text_gnu_ifunc_symbol |
77b7c781 | 5849 | = init_type (objfile, TYPE_CODE_FUNC, TARGET_CHAR_BIT, |
19f392bc | 5850 | "<text gnu-indirect-function variable, no debug info>"); |
19f392bc | 5851 | TYPE_GNU_IFUNC (objfile_type->nodebug_text_gnu_ifunc_symbol) = 1; |
0875794a | 5852 | objfile_type->nodebug_got_plt_symbol |
19f392bc UW |
5853 | = init_pointer_type (objfile, gdbarch_addr_bit (gdbarch), |
5854 | "<text from jump slot in .got.plt, no debug info>", | |
5855 | objfile_type->nodebug_text_symbol); | |
46bf5051 | 5856 | objfile_type->nodebug_data_symbol |
46a4882b | 5857 | = init_nodebug_var_type (objfile, "<data variable, no debug info>"); |
46bf5051 | 5858 | objfile_type->nodebug_unknown_symbol |
46a4882b | 5859 | = init_nodebug_var_type (objfile, "<variable (not text or data), no debug info>"); |
46bf5051 | 5860 | objfile_type->nodebug_tls_symbol |
46a4882b | 5861 | = init_nodebug_var_type (objfile, "<thread local variable, no debug info>"); |
000177f0 AC |
5862 | |
5863 | /* NOTE: on some targets, addresses and pointers are not necessarily | |
0a7cfe2c | 5864 | the same. |
000177f0 AC |
5865 | |
5866 | The upshot is: | |
5867 | - gdb's `struct type' always describes the target's | |
5868 | representation. | |
5869 | - gdb's `struct value' objects should always hold values in | |
5870 | target form. | |
5871 | - gdb's CORE_ADDR values are addresses in the unified virtual | |
5872 | address space that the assembler and linker work with. Thus, | |
5873 | since target_read_memory takes a CORE_ADDR as an argument, it | |
5874 | can access any memory on the target, even if the processor has | |
5875 | separate code and data address spaces. | |
5876 | ||
46bf5051 UW |
5877 | In this context, objfile_type->builtin_core_addr is a bit odd: |
5878 | it's a target type for a value the target will never see. It's | |
5879 | only used to hold the values of (typeless) linker symbols, which | |
5880 | are indeed in the unified virtual address space. */ | |
000177f0 | 5881 | |
46bf5051 | 5882 | objfile_type->builtin_core_addr |
19f392bc UW |
5883 | = init_integer_type (objfile, gdbarch_addr_bit (gdbarch), 1, |
5884 | "__CORE_ADDR"); | |
64c50499 | 5885 | |
7a102139 | 5886 | objfile_type_data.set (objfile, objfile_type); |
46bf5051 | 5887 | return objfile_type; |
000177f0 AC |
5888 | } |
5889 | ||
6c265988 | 5890 | void _initialize_gdbtypes (); |
c906108c | 5891 | void |
6c265988 | 5892 | _initialize_gdbtypes () |
c906108c | 5893 | { |
5674de60 UW |
5894 | gdbtypes_data = gdbarch_data_register_post_init (gdbtypes_post_init); |
5895 | ||
ccce17b0 YQ |
5896 | add_setshow_zuinteger_cmd ("overload", no_class, &overload_debug, |
5897 | _("Set debugging of C++ overloading."), | |
5898 | _("Show debugging of C++ overloading."), | |
5899 | _("When enabled, ranking of the " | |
5900 | "functions is displayed."), | |
5901 | NULL, | |
5902 | show_overload_debug, | |
5903 | &setdebuglist, &showdebuglist); | |
5674de60 | 5904 | |
7ba81444 | 5905 | /* Add user knob for controlling resolution of opaque types. */ |
5674de60 | 5906 | add_setshow_boolean_cmd ("opaque-type-resolution", class_support, |
3e43a32a MS |
5907 | &opaque_type_resolution, |
5908 | _("Set resolution of opaque struct/class/union" | |
5909 | " types (if set before loading symbols)."), | |
5910 | _("Show resolution of opaque struct/class/union" | |
5911 | " types (if set before loading symbols)."), | |
5912 | NULL, NULL, | |
5674de60 UW |
5913 | show_opaque_type_resolution, |
5914 | &setlist, &showlist); | |
a451cb65 KS |
5915 | |
5916 | /* Add an option to permit non-strict type checking. */ | |
5917 | add_setshow_boolean_cmd ("type", class_support, | |
5918 | &strict_type_checking, | |
5919 | _("Set strict type checking."), | |
5920 | _("Show strict type checking."), | |
5921 | NULL, NULL, | |
5922 | show_strict_type_checking, | |
5923 | &setchecklist, &showchecklist); | |
c906108c | 5924 | } |