Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Support routines for manipulating internal types for GDB. |
4f2aea11 | 2 | |
42a4f53d | 3 | Copyright (C) 1992-2019 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 DE |
38 | #include "bcache.h" |
39 | #include "dwarf2loc.h" | |
80180f79 | 40 | #include "gdbcore.h" |
1841ee5d | 41 | #include "floatformat.h" |
ac3aafc7 | 42 | |
6403aeea SW |
43 | /* Initialize BADNESS constants. */ |
44 | ||
a9d5ef47 | 45 | const struct rank LENGTH_MISMATCH_BADNESS = {100,0}; |
6403aeea | 46 | |
a9d5ef47 SW |
47 | const struct rank TOO_FEW_PARAMS_BADNESS = {100,0}; |
48 | const struct rank INCOMPATIBLE_TYPE_BADNESS = {100,0}; | |
6403aeea | 49 | |
a9d5ef47 | 50 | const struct rank EXACT_MATCH_BADNESS = {0,0}; |
6403aeea | 51 | |
a9d5ef47 SW |
52 | const struct rank INTEGER_PROMOTION_BADNESS = {1,0}; |
53 | const struct rank FLOAT_PROMOTION_BADNESS = {1,0}; | |
54 | const struct rank BASE_PTR_CONVERSION_BADNESS = {1,0}; | |
e15c3eb4 | 55 | const struct rank CV_CONVERSION_BADNESS = {1, 0}; |
a9d5ef47 SW |
56 | const struct rank INTEGER_CONVERSION_BADNESS = {2,0}; |
57 | const struct rank FLOAT_CONVERSION_BADNESS = {2,0}; | |
58 | const struct rank INT_FLOAT_CONVERSION_BADNESS = {2,0}; | |
59 | const struct rank VOID_PTR_CONVERSION_BADNESS = {2,0}; | |
5b4f6e25 | 60 | const struct rank BOOL_CONVERSION_BADNESS = {3,0}; |
a9d5ef47 SW |
61 | const struct rank BASE_CONVERSION_BADNESS = {2,0}; |
62 | const struct rank REFERENCE_CONVERSION_BADNESS = {2,0}; | |
da096638 | 63 | const struct rank NULL_POINTER_CONVERSION_BADNESS = {2,0}; |
a9d5ef47 | 64 | const struct rank NS_POINTER_CONVERSION_BADNESS = {10,0}; |
a451cb65 | 65 | const struct rank NS_INTEGER_POINTER_CONVERSION_BADNESS = {3,0}; |
6403aeea | 66 | |
8da61cc4 | 67 | /* Floatformat pairs. */ |
f9e9243a UW |
68 | const struct floatformat *floatformats_ieee_half[BFD_ENDIAN_UNKNOWN] = { |
69 | &floatformat_ieee_half_big, | |
70 | &floatformat_ieee_half_little | |
71 | }; | |
8da61cc4 DJ |
72 | const struct floatformat *floatformats_ieee_single[BFD_ENDIAN_UNKNOWN] = { |
73 | &floatformat_ieee_single_big, | |
74 | &floatformat_ieee_single_little | |
75 | }; | |
76 | const struct floatformat *floatformats_ieee_double[BFD_ENDIAN_UNKNOWN] = { | |
77 | &floatformat_ieee_double_big, | |
78 | &floatformat_ieee_double_little | |
79 | }; | |
80 | const struct floatformat *floatformats_ieee_double_littlebyte_bigword[BFD_ENDIAN_UNKNOWN] = { | |
81 | &floatformat_ieee_double_big, | |
82 | &floatformat_ieee_double_littlebyte_bigword | |
83 | }; | |
84 | const struct floatformat *floatformats_i387_ext[BFD_ENDIAN_UNKNOWN] = { | |
85 | &floatformat_i387_ext, | |
86 | &floatformat_i387_ext | |
87 | }; | |
88 | const struct floatformat *floatformats_m68881_ext[BFD_ENDIAN_UNKNOWN] = { | |
89 | &floatformat_m68881_ext, | |
90 | &floatformat_m68881_ext | |
91 | }; | |
92 | const struct floatformat *floatformats_arm_ext[BFD_ENDIAN_UNKNOWN] = { | |
93 | &floatformat_arm_ext_big, | |
94 | &floatformat_arm_ext_littlebyte_bigword | |
95 | }; | |
96 | const struct floatformat *floatformats_ia64_spill[BFD_ENDIAN_UNKNOWN] = { | |
97 | &floatformat_ia64_spill_big, | |
98 | &floatformat_ia64_spill_little | |
99 | }; | |
100 | const struct floatformat *floatformats_ia64_quad[BFD_ENDIAN_UNKNOWN] = { | |
101 | &floatformat_ia64_quad_big, | |
102 | &floatformat_ia64_quad_little | |
103 | }; | |
104 | const struct floatformat *floatformats_vax_f[BFD_ENDIAN_UNKNOWN] = { | |
105 | &floatformat_vax_f, | |
106 | &floatformat_vax_f | |
107 | }; | |
108 | const struct floatformat *floatformats_vax_d[BFD_ENDIAN_UNKNOWN] = { | |
109 | &floatformat_vax_d, | |
110 | &floatformat_vax_d | |
111 | }; | |
b14d30e1 | 112 | const struct floatformat *floatformats_ibm_long_double[BFD_ENDIAN_UNKNOWN] = { |
f5aee5ee AM |
113 | &floatformat_ibm_long_double_big, |
114 | &floatformat_ibm_long_double_little | |
b14d30e1 | 115 | }; |
8da61cc4 | 116 | |
2873700e KS |
117 | /* Should opaque types be resolved? */ |
118 | ||
119 | static int opaque_type_resolution = 1; | |
120 | ||
121 | /* A flag to enable printing of debugging information of C++ | |
122 | overloading. */ | |
123 | ||
124 | unsigned int overload_debug = 0; | |
125 | ||
a451cb65 KS |
126 | /* A flag to enable strict type checking. */ |
127 | ||
128 | static int strict_type_checking = 1; | |
129 | ||
2873700e | 130 | /* A function to show whether opaque types are resolved. */ |
5212577a | 131 | |
920d2a44 AC |
132 | static void |
133 | show_opaque_type_resolution (struct ui_file *file, int from_tty, | |
7ba81444 MS |
134 | struct cmd_list_element *c, |
135 | const char *value) | |
920d2a44 | 136 | { |
3e43a32a MS |
137 | fprintf_filtered (file, _("Resolution of opaque struct/class/union types " |
138 | "(if set before loading symbols) is %s.\n"), | |
920d2a44 AC |
139 | value); |
140 | } | |
141 | ||
2873700e | 142 | /* A function to show whether C++ overload debugging is enabled. */ |
5212577a | 143 | |
920d2a44 AC |
144 | static void |
145 | show_overload_debug (struct ui_file *file, int from_tty, | |
146 | struct cmd_list_element *c, const char *value) | |
147 | { | |
7ba81444 MS |
148 | fprintf_filtered (file, _("Debugging of C++ overloading is %s.\n"), |
149 | value); | |
920d2a44 | 150 | } |
c906108c | 151 | |
a451cb65 KS |
152 | /* A function to show the status of strict type checking. */ |
153 | ||
154 | static void | |
155 | show_strict_type_checking (struct ui_file *file, int from_tty, | |
156 | struct cmd_list_element *c, const char *value) | |
157 | { | |
158 | fprintf_filtered (file, _("Strict type checking is %s.\n"), value); | |
159 | } | |
160 | ||
5212577a | 161 | \f |
e9bb382b UW |
162 | /* Allocate a new OBJFILE-associated type structure and fill it |
163 | with some defaults. Space for the type structure is allocated | |
164 | on the objfile's objfile_obstack. */ | |
c906108c SS |
165 | |
166 | struct type * | |
fba45db2 | 167 | alloc_type (struct objfile *objfile) |
c906108c | 168 | { |
52f0bd74 | 169 | struct type *type; |
c906108c | 170 | |
e9bb382b UW |
171 | gdb_assert (objfile != NULL); |
172 | ||
7ba81444 | 173 | /* Alloc the structure and start off with all fields zeroed. */ |
e9bb382b UW |
174 | type = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct type); |
175 | TYPE_MAIN_TYPE (type) = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
176 | struct main_type); | |
177 | OBJSTAT (objfile, n_types++); | |
c906108c | 178 | |
e9bb382b UW |
179 | TYPE_OBJFILE_OWNED (type) = 1; |
180 | TYPE_OWNER (type).objfile = objfile; | |
c906108c | 181 | |
7ba81444 | 182 | /* Initialize the fields that might not be zero. */ |
c906108c SS |
183 | |
184 | TYPE_CODE (type) = TYPE_CODE_UNDEF; | |
2fdde8f8 | 185 | TYPE_CHAIN (type) = type; /* Chain back to itself. */ |
c906108c | 186 | |
c16abbde | 187 | return type; |
c906108c SS |
188 | } |
189 | ||
e9bb382b UW |
190 | /* Allocate a new GDBARCH-associated type structure and fill it |
191 | with some defaults. Space for the type structure is allocated | |
8f57eec2 | 192 | on the obstack associated with GDBARCH. */ |
e9bb382b UW |
193 | |
194 | struct type * | |
195 | alloc_type_arch (struct gdbarch *gdbarch) | |
196 | { | |
197 | struct type *type; | |
198 | ||
199 | gdb_assert (gdbarch != NULL); | |
200 | ||
201 | /* Alloc the structure and start off with all fields zeroed. */ | |
202 | ||
8f57eec2 PP |
203 | type = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct type); |
204 | TYPE_MAIN_TYPE (type) = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct main_type); | |
e9bb382b UW |
205 | |
206 | TYPE_OBJFILE_OWNED (type) = 0; | |
207 | TYPE_OWNER (type).gdbarch = gdbarch; | |
208 | ||
209 | /* Initialize the fields that might not be zero. */ | |
210 | ||
211 | TYPE_CODE (type) = TYPE_CODE_UNDEF; | |
e9bb382b UW |
212 | TYPE_CHAIN (type) = type; /* Chain back to itself. */ |
213 | ||
214 | return type; | |
215 | } | |
216 | ||
217 | /* If TYPE is objfile-associated, allocate a new type structure | |
218 | associated with the same objfile. If TYPE is gdbarch-associated, | |
219 | allocate a new type structure associated with the same gdbarch. */ | |
220 | ||
221 | struct type * | |
222 | alloc_type_copy (const struct type *type) | |
223 | { | |
224 | if (TYPE_OBJFILE_OWNED (type)) | |
225 | return alloc_type (TYPE_OWNER (type).objfile); | |
226 | else | |
227 | return alloc_type_arch (TYPE_OWNER (type).gdbarch); | |
228 | } | |
229 | ||
230 | /* If TYPE is gdbarch-associated, return that architecture. | |
231 | If TYPE is objfile-associated, return that objfile's architecture. */ | |
232 | ||
233 | struct gdbarch * | |
234 | get_type_arch (const struct type *type) | |
235 | { | |
2fabdf33 AB |
236 | struct gdbarch *arch; |
237 | ||
e9bb382b | 238 | if (TYPE_OBJFILE_OWNED (type)) |
2fabdf33 | 239 | arch = get_objfile_arch (TYPE_OWNER (type).objfile); |
e9bb382b | 240 | else |
2fabdf33 AB |
241 | arch = TYPE_OWNER (type).gdbarch; |
242 | ||
243 | /* The ARCH can be NULL if TYPE is associated with neither an objfile nor | |
244 | a gdbarch, however, this is very rare, and even then, in most cases | |
245 | that get_type_arch is called, we assume that a non-NULL value is | |
246 | returned. */ | |
247 | gdb_assert (arch != NULL); | |
248 | return arch; | |
e9bb382b UW |
249 | } |
250 | ||
99ad9427 YQ |
251 | /* See gdbtypes.h. */ |
252 | ||
253 | struct type * | |
254 | get_target_type (struct type *type) | |
255 | { | |
256 | if (type != NULL) | |
257 | { | |
258 | type = TYPE_TARGET_TYPE (type); | |
259 | if (type != NULL) | |
260 | type = check_typedef (type); | |
261 | } | |
262 | ||
263 | return type; | |
264 | } | |
265 | ||
2e056931 SM |
266 | /* See gdbtypes.h. */ |
267 | ||
268 | unsigned int | |
269 | type_length_units (struct type *type) | |
270 | { | |
271 | struct gdbarch *arch = get_type_arch (type); | |
272 | int unit_size = gdbarch_addressable_memory_unit_size (arch); | |
273 | ||
274 | return TYPE_LENGTH (type) / unit_size; | |
275 | } | |
276 | ||
2fdde8f8 DJ |
277 | /* Alloc a new type instance structure, fill it with some defaults, |
278 | and point it at OLDTYPE. Allocate the new type instance from the | |
279 | same place as OLDTYPE. */ | |
280 | ||
281 | static struct type * | |
282 | alloc_type_instance (struct type *oldtype) | |
283 | { | |
284 | struct type *type; | |
285 | ||
286 | /* Allocate the structure. */ | |
287 | ||
e9bb382b | 288 | if (! TYPE_OBJFILE_OWNED (oldtype)) |
2fabdf33 | 289 | type = GDBARCH_OBSTACK_ZALLOC (get_type_arch (oldtype), struct type); |
2fdde8f8 | 290 | else |
1deafd4e PA |
291 | type = OBSTACK_ZALLOC (&TYPE_OBJFILE (oldtype)->objfile_obstack, |
292 | struct type); | |
293 | ||
2fdde8f8 DJ |
294 | TYPE_MAIN_TYPE (type) = TYPE_MAIN_TYPE (oldtype); |
295 | ||
296 | TYPE_CHAIN (type) = type; /* Chain back to itself for now. */ | |
297 | ||
c16abbde | 298 | return type; |
2fdde8f8 DJ |
299 | } |
300 | ||
301 | /* Clear all remnants of the previous type at TYPE, in preparation for | |
e9bb382b | 302 | replacing it with something else. Preserve owner information. */ |
5212577a | 303 | |
2fdde8f8 DJ |
304 | static void |
305 | smash_type (struct type *type) | |
306 | { | |
e9bb382b UW |
307 | int objfile_owned = TYPE_OBJFILE_OWNED (type); |
308 | union type_owner owner = TYPE_OWNER (type); | |
309 | ||
2fdde8f8 DJ |
310 | memset (TYPE_MAIN_TYPE (type), 0, sizeof (struct main_type)); |
311 | ||
e9bb382b UW |
312 | /* Restore owner information. */ |
313 | TYPE_OBJFILE_OWNED (type) = objfile_owned; | |
314 | TYPE_OWNER (type) = owner; | |
315 | ||
2fdde8f8 DJ |
316 | /* For now, delete the rings. */ |
317 | TYPE_CHAIN (type) = type; | |
318 | ||
319 | /* For now, leave the pointer/reference types alone. */ | |
320 | } | |
321 | ||
c906108c SS |
322 | /* Lookup a pointer to a type TYPE. TYPEPTR, if nonzero, points |
323 | to a pointer to memory where the pointer type should be stored. | |
324 | If *TYPEPTR is zero, update it to point to the pointer type we return. | |
325 | We allocate new memory if needed. */ | |
326 | ||
327 | struct type * | |
fba45db2 | 328 | make_pointer_type (struct type *type, struct type **typeptr) |
c906108c | 329 | { |
52f0bd74 | 330 | struct type *ntype; /* New type */ |
053cb41b | 331 | struct type *chain; |
c906108c SS |
332 | |
333 | ntype = TYPE_POINTER_TYPE (type); | |
334 | ||
c5aa993b | 335 | if (ntype) |
c906108c | 336 | { |
c5aa993b | 337 | if (typeptr == 0) |
7ba81444 MS |
338 | return ntype; /* Don't care about alloc, |
339 | and have new type. */ | |
c906108c | 340 | else if (*typeptr == 0) |
c5aa993b | 341 | { |
7ba81444 | 342 | *typeptr = ntype; /* Tracking alloc, and have new type. */ |
c906108c | 343 | return ntype; |
c5aa993b | 344 | } |
c906108c SS |
345 | } |
346 | ||
347 | if (typeptr == 0 || *typeptr == 0) /* We'll need to allocate one. */ | |
348 | { | |
e9bb382b | 349 | ntype = alloc_type_copy (type); |
c906108c SS |
350 | if (typeptr) |
351 | *typeptr = ntype; | |
352 | } | |
7ba81444 | 353 | else /* We have storage, but need to reset it. */ |
c906108c SS |
354 | { |
355 | ntype = *typeptr; | |
053cb41b | 356 | chain = TYPE_CHAIN (ntype); |
2fdde8f8 | 357 | smash_type (ntype); |
053cb41b | 358 | TYPE_CHAIN (ntype) = chain; |
c906108c SS |
359 | } |
360 | ||
361 | TYPE_TARGET_TYPE (ntype) = type; | |
362 | TYPE_POINTER_TYPE (type) = ntype; | |
363 | ||
5212577a | 364 | /* FIXME! Assumes the machine has only one representation for pointers! */ |
c906108c | 365 | |
50810684 UW |
366 | TYPE_LENGTH (ntype) |
367 | = gdbarch_ptr_bit (get_type_arch (type)) / TARGET_CHAR_BIT; | |
c906108c SS |
368 | TYPE_CODE (ntype) = TYPE_CODE_PTR; |
369 | ||
67b2adb2 | 370 | /* Mark pointers as unsigned. The target converts between pointers |
76e71323 | 371 | and addresses (CORE_ADDRs) using gdbarch_pointer_to_address and |
7ba81444 | 372 | gdbarch_address_to_pointer. */ |
876cecd0 | 373 | TYPE_UNSIGNED (ntype) = 1; |
c5aa993b | 374 | |
053cb41b JB |
375 | /* Update the length of all the other variants of this type. */ |
376 | chain = TYPE_CHAIN (ntype); | |
377 | while (chain != ntype) | |
378 | { | |
379 | TYPE_LENGTH (chain) = TYPE_LENGTH (ntype); | |
380 | chain = TYPE_CHAIN (chain); | |
381 | } | |
382 | ||
c906108c SS |
383 | return ntype; |
384 | } | |
385 | ||
386 | /* Given a type TYPE, return a type of pointers to that type. | |
387 | May need to construct such a type if this is the first use. */ | |
388 | ||
389 | struct type * | |
fba45db2 | 390 | lookup_pointer_type (struct type *type) |
c906108c | 391 | { |
c5aa993b | 392 | return make_pointer_type (type, (struct type **) 0); |
c906108c SS |
393 | } |
394 | ||
7ba81444 MS |
395 | /* Lookup a C++ `reference' to a type TYPE. TYPEPTR, if nonzero, |
396 | points to a pointer to memory where the reference type should be | |
397 | stored. If *TYPEPTR is zero, update it to point to the reference | |
3b224330 AV |
398 | type we return. We allocate new memory if needed. REFCODE denotes |
399 | the kind of reference type to lookup (lvalue or rvalue reference). */ | |
c906108c SS |
400 | |
401 | struct type * | |
3b224330 AV |
402 | make_reference_type (struct type *type, struct type **typeptr, |
403 | enum type_code refcode) | |
c906108c | 404 | { |
52f0bd74 | 405 | struct type *ntype; /* New type */ |
3b224330 | 406 | struct type **reftype; |
1e98b326 | 407 | struct type *chain; |
c906108c | 408 | |
3b224330 AV |
409 | gdb_assert (refcode == TYPE_CODE_REF || refcode == TYPE_CODE_RVALUE_REF); |
410 | ||
411 | ntype = (refcode == TYPE_CODE_REF ? TYPE_REFERENCE_TYPE (type) | |
412 | : TYPE_RVALUE_REFERENCE_TYPE (type)); | |
c906108c | 413 | |
c5aa993b | 414 | if (ntype) |
c906108c | 415 | { |
c5aa993b | 416 | if (typeptr == 0) |
7ba81444 MS |
417 | return ntype; /* Don't care about alloc, |
418 | and have new type. */ | |
c906108c | 419 | else if (*typeptr == 0) |
c5aa993b | 420 | { |
7ba81444 | 421 | *typeptr = ntype; /* Tracking alloc, and have new type. */ |
c906108c | 422 | return ntype; |
c5aa993b | 423 | } |
c906108c SS |
424 | } |
425 | ||
426 | if (typeptr == 0 || *typeptr == 0) /* We'll need to allocate one. */ | |
427 | { | |
e9bb382b | 428 | ntype = alloc_type_copy (type); |
c906108c SS |
429 | if (typeptr) |
430 | *typeptr = ntype; | |
431 | } | |
7ba81444 | 432 | else /* We have storage, but need to reset it. */ |
c906108c SS |
433 | { |
434 | ntype = *typeptr; | |
1e98b326 | 435 | chain = TYPE_CHAIN (ntype); |
2fdde8f8 | 436 | smash_type (ntype); |
1e98b326 | 437 | TYPE_CHAIN (ntype) = chain; |
c906108c SS |
438 | } |
439 | ||
440 | TYPE_TARGET_TYPE (ntype) = type; | |
3b224330 AV |
441 | reftype = (refcode == TYPE_CODE_REF ? &TYPE_REFERENCE_TYPE (type) |
442 | : &TYPE_RVALUE_REFERENCE_TYPE (type)); | |
443 | ||
444 | *reftype = ntype; | |
c906108c | 445 | |
7ba81444 MS |
446 | /* FIXME! Assume the machine has only one representation for |
447 | references, and that it matches the (only) representation for | |
448 | pointers! */ | |
c906108c | 449 | |
50810684 UW |
450 | TYPE_LENGTH (ntype) = |
451 | gdbarch_ptr_bit (get_type_arch (type)) / TARGET_CHAR_BIT; | |
3b224330 | 452 | TYPE_CODE (ntype) = refcode; |
c5aa993b | 453 | |
3b224330 | 454 | *reftype = ntype; |
c906108c | 455 | |
1e98b326 JB |
456 | /* Update the length of all the other variants of this type. */ |
457 | chain = TYPE_CHAIN (ntype); | |
458 | while (chain != ntype) | |
459 | { | |
460 | TYPE_LENGTH (chain) = TYPE_LENGTH (ntype); | |
461 | chain = TYPE_CHAIN (chain); | |
462 | } | |
463 | ||
c906108c SS |
464 | return ntype; |
465 | } | |
466 | ||
7ba81444 MS |
467 | /* Same as above, but caller doesn't care about memory allocation |
468 | details. */ | |
c906108c SS |
469 | |
470 | struct type * | |
3b224330 AV |
471 | lookup_reference_type (struct type *type, enum type_code refcode) |
472 | { | |
473 | return make_reference_type (type, (struct type **) 0, refcode); | |
474 | } | |
475 | ||
476 | /* Lookup the lvalue reference type for the type TYPE. */ | |
477 | ||
478 | struct type * | |
479 | lookup_lvalue_reference_type (struct type *type) | |
480 | { | |
481 | return lookup_reference_type (type, TYPE_CODE_REF); | |
482 | } | |
483 | ||
484 | /* Lookup the rvalue reference type for the type TYPE. */ | |
485 | ||
486 | struct type * | |
487 | lookup_rvalue_reference_type (struct type *type) | |
c906108c | 488 | { |
3b224330 | 489 | return lookup_reference_type (type, TYPE_CODE_RVALUE_REF); |
c906108c SS |
490 | } |
491 | ||
7ba81444 MS |
492 | /* Lookup a function type that returns type TYPE. TYPEPTR, if |
493 | nonzero, points to a pointer to memory where the function type | |
494 | should be stored. If *TYPEPTR is zero, update it to point to the | |
0c8b41f1 | 495 | function type we return. We allocate new memory if needed. */ |
c906108c SS |
496 | |
497 | struct type * | |
0c8b41f1 | 498 | make_function_type (struct type *type, struct type **typeptr) |
c906108c | 499 | { |
52f0bd74 | 500 | struct type *ntype; /* New type */ |
c906108c SS |
501 | |
502 | if (typeptr == 0 || *typeptr == 0) /* We'll need to allocate one. */ | |
503 | { | |
e9bb382b | 504 | ntype = alloc_type_copy (type); |
c906108c SS |
505 | if (typeptr) |
506 | *typeptr = ntype; | |
507 | } | |
7ba81444 | 508 | else /* We have storage, but need to reset it. */ |
c906108c SS |
509 | { |
510 | ntype = *typeptr; | |
2fdde8f8 | 511 | smash_type (ntype); |
c906108c SS |
512 | } |
513 | ||
514 | TYPE_TARGET_TYPE (ntype) = type; | |
515 | ||
516 | TYPE_LENGTH (ntype) = 1; | |
517 | TYPE_CODE (ntype) = TYPE_CODE_FUNC; | |
c5aa993b | 518 | |
b6cdc2c1 JK |
519 | INIT_FUNC_SPECIFIC (ntype); |
520 | ||
c906108c SS |
521 | return ntype; |
522 | } | |
523 | ||
c906108c SS |
524 | /* Given a type TYPE, return a type of functions that return that type. |
525 | May need to construct such a type if this is the first use. */ | |
526 | ||
527 | struct type * | |
fba45db2 | 528 | lookup_function_type (struct type *type) |
c906108c | 529 | { |
0c8b41f1 | 530 | return make_function_type (type, (struct type **) 0); |
c906108c SS |
531 | } |
532 | ||
71918a86 | 533 | /* Given a type TYPE and argument types, return the appropriate |
a6fb9c08 TT |
534 | function type. If the final type in PARAM_TYPES is NULL, make a |
535 | varargs function. */ | |
71918a86 TT |
536 | |
537 | struct type * | |
538 | lookup_function_type_with_arguments (struct type *type, | |
539 | int nparams, | |
540 | struct type **param_types) | |
541 | { | |
542 | struct type *fn = make_function_type (type, (struct type **) 0); | |
543 | int i; | |
544 | ||
e314d629 | 545 | if (nparams > 0) |
a6fb9c08 | 546 | { |
e314d629 TT |
547 | if (param_types[nparams - 1] == NULL) |
548 | { | |
549 | --nparams; | |
550 | TYPE_VARARGS (fn) = 1; | |
551 | } | |
552 | else if (TYPE_CODE (check_typedef (param_types[nparams - 1])) | |
553 | == TYPE_CODE_VOID) | |
554 | { | |
555 | --nparams; | |
556 | /* Caller should have ensured this. */ | |
557 | gdb_assert (nparams == 0); | |
558 | TYPE_PROTOTYPED (fn) = 1; | |
559 | } | |
54990598 PA |
560 | else |
561 | TYPE_PROTOTYPED (fn) = 1; | |
a6fb9c08 TT |
562 | } |
563 | ||
71918a86 | 564 | TYPE_NFIELDS (fn) = nparams; |
224c3ddb SM |
565 | TYPE_FIELDS (fn) |
566 | = (struct field *) TYPE_ZALLOC (fn, nparams * sizeof (struct field)); | |
71918a86 TT |
567 | for (i = 0; i < nparams; ++i) |
568 | TYPE_FIELD_TYPE (fn, i) = param_types[i]; | |
569 | ||
570 | return fn; | |
571 | } | |
572 | ||
47663de5 MS |
573 | /* Identify address space identifier by name -- |
574 | return the integer flag defined in gdbtypes.h. */ | |
5212577a DE |
575 | |
576 | int | |
50810684 | 577 | address_space_name_to_int (struct gdbarch *gdbarch, char *space_identifier) |
47663de5 | 578 | { |
8b2dbe47 | 579 | int type_flags; |
d8734c88 | 580 | |
7ba81444 | 581 | /* Check for known address space delimiters. */ |
47663de5 | 582 | if (!strcmp (space_identifier, "code")) |
876cecd0 | 583 | return TYPE_INSTANCE_FLAG_CODE_SPACE; |
47663de5 | 584 | else if (!strcmp (space_identifier, "data")) |
876cecd0 | 585 | return TYPE_INSTANCE_FLAG_DATA_SPACE; |
5f11f355 AC |
586 | else if (gdbarch_address_class_name_to_type_flags_p (gdbarch) |
587 | && gdbarch_address_class_name_to_type_flags (gdbarch, | |
588 | space_identifier, | |
589 | &type_flags)) | |
8b2dbe47 | 590 | return type_flags; |
47663de5 | 591 | else |
8a3fe4f8 | 592 | error (_("Unknown address space specifier: \"%s\""), space_identifier); |
47663de5 MS |
593 | } |
594 | ||
595 | /* Identify address space identifier by integer flag as defined in | |
7ba81444 | 596 | gdbtypes.h -- return the string version of the adress space name. */ |
47663de5 | 597 | |
321432c0 | 598 | const char * |
50810684 | 599 | address_space_int_to_name (struct gdbarch *gdbarch, int space_flag) |
47663de5 | 600 | { |
876cecd0 | 601 | if (space_flag & TYPE_INSTANCE_FLAG_CODE_SPACE) |
47663de5 | 602 | return "code"; |
876cecd0 | 603 | else if (space_flag & TYPE_INSTANCE_FLAG_DATA_SPACE) |
47663de5 | 604 | return "data"; |
876cecd0 | 605 | else if ((space_flag & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
5f11f355 AC |
606 | && gdbarch_address_class_type_flags_to_name_p (gdbarch)) |
607 | return gdbarch_address_class_type_flags_to_name (gdbarch, space_flag); | |
47663de5 MS |
608 | else |
609 | return NULL; | |
610 | } | |
611 | ||
2fdde8f8 | 612 | /* Create a new type with instance flags NEW_FLAGS, based on TYPE. |
ad766c0a JB |
613 | |
614 | If STORAGE is non-NULL, create the new type instance there. | |
615 | STORAGE must be in the same obstack as TYPE. */ | |
47663de5 | 616 | |
b9362cc7 | 617 | static struct type * |
2fdde8f8 DJ |
618 | make_qualified_type (struct type *type, int new_flags, |
619 | struct type *storage) | |
47663de5 MS |
620 | { |
621 | struct type *ntype; | |
622 | ||
623 | ntype = type; | |
5f61c20e JK |
624 | do |
625 | { | |
626 | if (TYPE_INSTANCE_FLAGS (ntype) == new_flags) | |
627 | return ntype; | |
628 | ntype = TYPE_CHAIN (ntype); | |
629 | } | |
630 | while (ntype != type); | |
47663de5 | 631 | |
2fdde8f8 DJ |
632 | /* Create a new type instance. */ |
633 | if (storage == NULL) | |
634 | ntype = alloc_type_instance (type); | |
635 | else | |
636 | { | |
7ba81444 MS |
637 | /* If STORAGE was provided, it had better be in the same objfile |
638 | as TYPE. Otherwise, we can't link it into TYPE's cv chain: | |
639 | if one objfile is freed and the other kept, we'd have | |
640 | dangling pointers. */ | |
ad766c0a JB |
641 | gdb_assert (TYPE_OBJFILE (type) == TYPE_OBJFILE (storage)); |
642 | ||
2fdde8f8 DJ |
643 | ntype = storage; |
644 | TYPE_MAIN_TYPE (ntype) = TYPE_MAIN_TYPE (type); | |
645 | TYPE_CHAIN (ntype) = ntype; | |
646 | } | |
47663de5 MS |
647 | |
648 | /* Pointers or references to the original type are not relevant to | |
2fdde8f8 | 649 | the new type. */ |
47663de5 MS |
650 | TYPE_POINTER_TYPE (ntype) = (struct type *) 0; |
651 | TYPE_REFERENCE_TYPE (ntype) = (struct type *) 0; | |
47663de5 | 652 | |
2fdde8f8 DJ |
653 | /* Chain the new qualified type to the old type. */ |
654 | TYPE_CHAIN (ntype) = TYPE_CHAIN (type); | |
655 | TYPE_CHAIN (type) = ntype; | |
656 | ||
657 | /* Now set the instance flags and return the new type. */ | |
658 | TYPE_INSTANCE_FLAGS (ntype) = new_flags; | |
47663de5 | 659 | |
ab5d3da6 KB |
660 | /* Set length of new type to that of the original type. */ |
661 | TYPE_LENGTH (ntype) = TYPE_LENGTH (type); | |
662 | ||
47663de5 MS |
663 | return ntype; |
664 | } | |
665 | ||
2fdde8f8 DJ |
666 | /* Make an address-space-delimited variant of a type -- a type that |
667 | is identical to the one supplied except that it has an address | |
668 | space attribute attached to it (such as "code" or "data"). | |
669 | ||
7ba81444 MS |
670 | The space attributes "code" and "data" are for Harvard |
671 | architectures. The address space attributes are for architectures | |
672 | which have alternately sized pointers or pointers with alternate | |
673 | representations. */ | |
2fdde8f8 DJ |
674 | |
675 | struct type * | |
676 | make_type_with_address_space (struct type *type, int space_flag) | |
677 | { | |
2fdde8f8 | 678 | int new_flags = ((TYPE_INSTANCE_FLAGS (type) |
876cecd0 TT |
679 | & ~(TYPE_INSTANCE_FLAG_CODE_SPACE |
680 | | TYPE_INSTANCE_FLAG_DATA_SPACE | |
681 | | TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL)) | |
2fdde8f8 DJ |
682 | | space_flag); |
683 | ||
684 | return make_qualified_type (type, new_flags, NULL); | |
685 | } | |
c906108c SS |
686 | |
687 | /* Make a "c-v" variant of a type -- a type that is identical to the | |
688 | one supplied except that it may have const or volatile attributes | |
689 | CNST is a flag for setting the const attribute | |
690 | VOLTL is a flag for setting the volatile attribute | |
691 | TYPE is the base type whose variant we are creating. | |
c906108c | 692 | |
ad766c0a JB |
693 | If TYPEPTR and *TYPEPTR are non-zero, then *TYPEPTR points to |
694 | storage to hold the new qualified type; *TYPEPTR and TYPE must be | |
695 | in the same objfile. Otherwise, allocate fresh memory for the new | |
696 | type whereever TYPE lives. If TYPEPTR is non-zero, set it to the | |
697 | new type we construct. */ | |
5212577a | 698 | |
c906108c | 699 | struct type * |
7ba81444 MS |
700 | make_cv_type (int cnst, int voltl, |
701 | struct type *type, | |
702 | struct type **typeptr) | |
c906108c | 703 | { |
52f0bd74 | 704 | struct type *ntype; /* New type */ |
c906108c | 705 | |
2fdde8f8 | 706 | int new_flags = (TYPE_INSTANCE_FLAGS (type) |
308d96ed MS |
707 | & ~(TYPE_INSTANCE_FLAG_CONST |
708 | | TYPE_INSTANCE_FLAG_VOLATILE)); | |
c906108c | 709 | |
c906108c | 710 | if (cnst) |
876cecd0 | 711 | new_flags |= TYPE_INSTANCE_FLAG_CONST; |
c906108c SS |
712 | |
713 | if (voltl) | |
876cecd0 | 714 | new_flags |= TYPE_INSTANCE_FLAG_VOLATILE; |
a02fd225 | 715 | |
2fdde8f8 | 716 | if (typeptr && *typeptr != NULL) |
a02fd225 | 717 | { |
ad766c0a JB |
718 | /* TYPE and *TYPEPTR must be in the same objfile. We can't have |
719 | a C-V variant chain that threads across objfiles: if one | |
720 | objfile gets freed, then the other has a broken C-V chain. | |
721 | ||
722 | This code used to try to copy over the main type from TYPE to | |
723 | *TYPEPTR if they were in different objfiles, but that's | |
724 | wrong, too: TYPE may have a field list or member function | |
725 | lists, which refer to types of their own, etc. etc. The | |
726 | whole shebang would need to be copied over recursively; you | |
727 | can't have inter-objfile pointers. The only thing to do is | |
728 | to leave stub types as stub types, and look them up afresh by | |
729 | name each time you encounter them. */ | |
730 | gdb_assert (TYPE_OBJFILE (*typeptr) == TYPE_OBJFILE (type)); | |
2fdde8f8 DJ |
731 | } |
732 | ||
7ba81444 MS |
733 | ntype = make_qualified_type (type, new_flags, |
734 | typeptr ? *typeptr : NULL); | |
c906108c | 735 | |
2fdde8f8 DJ |
736 | if (typeptr != NULL) |
737 | *typeptr = ntype; | |
a02fd225 | 738 | |
2fdde8f8 | 739 | return ntype; |
a02fd225 | 740 | } |
c906108c | 741 | |
06d66ee9 TT |
742 | /* Make a 'restrict'-qualified version of TYPE. */ |
743 | ||
744 | struct type * | |
745 | make_restrict_type (struct type *type) | |
746 | { | |
747 | return make_qualified_type (type, | |
748 | (TYPE_INSTANCE_FLAGS (type) | |
749 | | TYPE_INSTANCE_FLAG_RESTRICT), | |
750 | NULL); | |
751 | } | |
752 | ||
f1660027 TT |
753 | /* Make a type without const, volatile, or restrict. */ |
754 | ||
755 | struct type * | |
756 | make_unqualified_type (struct type *type) | |
757 | { | |
758 | return make_qualified_type (type, | |
759 | (TYPE_INSTANCE_FLAGS (type) | |
760 | & ~(TYPE_INSTANCE_FLAG_CONST | |
761 | | TYPE_INSTANCE_FLAG_VOLATILE | |
762 | | TYPE_INSTANCE_FLAG_RESTRICT)), | |
763 | NULL); | |
764 | } | |
765 | ||
a2c2acaf MW |
766 | /* Make a '_Atomic'-qualified version of TYPE. */ |
767 | ||
768 | struct type * | |
769 | make_atomic_type (struct type *type) | |
770 | { | |
771 | return make_qualified_type (type, | |
772 | (TYPE_INSTANCE_FLAGS (type) | |
773 | | TYPE_INSTANCE_FLAG_ATOMIC), | |
774 | NULL); | |
775 | } | |
776 | ||
2fdde8f8 DJ |
777 | /* Replace the contents of ntype with the type *type. This changes the |
778 | contents, rather than the pointer for TYPE_MAIN_TYPE (ntype); thus | |
779 | the changes are propogated to all types in the TYPE_CHAIN. | |
dd6bda65 | 780 | |
cda6c68a JB |
781 | In order to build recursive types, it's inevitable that we'll need |
782 | to update types in place --- but this sort of indiscriminate | |
783 | smashing is ugly, and needs to be replaced with something more | |
2fdde8f8 DJ |
784 | controlled. TYPE_MAIN_TYPE is a step in this direction; it's not |
785 | clear if more steps are needed. */ | |
5212577a | 786 | |
dd6bda65 DJ |
787 | void |
788 | replace_type (struct type *ntype, struct type *type) | |
789 | { | |
ab5d3da6 | 790 | struct type *chain; |
dd6bda65 | 791 | |
ad766c0a JB |
792 | /* These two types had better be in the same objfile. Otherwise, |
793 | the assignment of one type's main type structure to the other | |
794 | will produce a type with references to objects (names; field | |
795 | lists; etc.) allocated on an objfile other than its own. */ | |
e46dd0f4 | 796 | gdb_assert (TYPE_OBJFILE (ntype) == TYPE_OBJFILE (type)); |
ad766c0a | 797 | |
2fdde8f8 | 798 | *TYPE_MAIN_TYPE (ntype) = *TYPE_MAIN_TYPE (type); |
dd6bda65 | 799 | |
7ba81444 MS |
800 | /* The type length is not a part of the main type. Update it for |
801 | each type on the variant chain. */ | |
ab5d3da6 | 802 | chain = ntype; |
5f61c20e JK |
803 | do |
804 | { | |
805 | /* Assert that this element of the chain has no address-class bits | |
806 | set in its flags. Such type variants might have type lengths | |
807 | which are supposed to be different from the non-address-class | |
808 | variants. This assertion shouldn't ever be triggered because | |
809 | symbol readers which do construct address-class variants don't | |
810 | call replace_type(). */ | |
811 | gdb_assert (TYPE_ADDRESS_CLASS_ALL (chain) == 0); | |
812 | ||
813 | TYPE_LENGTH (chain) = TYPE_LENGTH (type); | |
814 | chain = TYPE_CHAIN (chain); | |
815 | } | |
816 | while (ntype != chain); | |
ab5d3da6 | 817 | |
2fdde8f8 DJ |
818 | /* Assert that the two types have equivalent instance qualifiers. |
819 | This should be true for at least all of our debug readers. */ | |
820 | gdb_assert (TYPE_INSTANCE_FLAGS (ntype) == TYPE_INSTANCE_FLAGS (type)); | |
dd6bda65 DJ |
821 | } |
822 | ||
c906108c SS |
823 | /* Implement direct support for MEMBER_TYPE in GNU C++. |
824 | May need to construct such a type if this is the first use. | |
825 | The TYPE is the type of the member. The DOMAIN is the type | |
826 | of the aggregate that the member belongs to. */ | |
827 | ||
828 | struct type * | |
0d5de010 | 829 | lookup_memberptr_type (struct type *type, struct type *domain) |
c906108c | 830 | { |
52f0bd74 | 831 | struct type *mtype; |
c906108c | 832 | |
e9bb382b | 833 | mtype = alloc_type_copy (type); |
0d5de010 | 834 | smash_to_memberptr_type (mtype, domain, type); |
c16abbde | 835 | return mtype; |
c906108c SS |
836 | } |
837 | ||
0d5de010 DJ |
838 | /* Return a pointer-to-method type, for a method of type TO_TYPE. */ |
839 | ||
840 | struct type * | |
841 | lookup_methodptr_type (struct type *to_type) | |
842 | { | |
843 | struct type *mtype; | |
844 | ||
e9bb382b | 845 | mtype = alloc_type_copy (to_type); |
0b92b5bb | 846 | smash_to_methodptr_type (mtype, to_type); |
0d5de010 DJ |
847 | return mtype; |
848 | } | |
849 | ||
7ba81444 MS |
850 | /* Allocate a stub method whose return type is TYPE. This apparently |
851 | happens for speed of symbol reading, since parsing out the | |
852 | arguments to the method is cpu-intensive, the way we are doing it. | |
853 | So, we will fill in arguments later. This always returns a fresh | |
854 | type. */ | |
c906108c SS |
855 | |
856 | struct type * | |
fba45db2 | 857 | allocate_stub_method (struct type *type) |
c906108c SS |
858 | { |
859 | struct type *mtype; | |
860 | ||
e9bb382b UW |
861 | mtype = alloc_type_copy (type); |
862 | TYPE_CODE (mtype) = TYPE_CODE_METHOD; | |
863 | TYPE_LENGTH (mtype) = 1; | |
864 | TYPE_STUB (mtype) = 1; | |
c906108c | 865 | TYPE_TARGET_TYPE (mtype) = type; |
4bfb94b8 | 866 | /* TYPE_SELF_TYPE (mtype) = unknown yet */ |
c16abbde | 867 | return mtype; |
c906108c SS |
868 | } |
869 | ||
0f59d5fc PA |
870 | /* See gdbtypes.h. */ |
871 | ||
872 | bool | |
873 | operator== (const dynamic_prop &l, const dynamic_prop &r) | |
874 | { | |
875 | if (l.kind != r.kind) | |
876 | return false; | |
877 | ||
878 | switch (l.kind) | |
879 | { | |
880 | case PROP_UNDEFINED: | |
881 | return true; | |
882 | case PROP_CONST: | |
883 | return l.data.const_val == r.data.const_val; | |
884 | case PROP_ADDR_OFFSET: | |
885 | case PROP_LOCEXPR: | |
886 | case PROP_LOCLIST: | |
887 | return l.data.baton == r.data.baton; | |
888 | } | |
889 | ||
890 | gdb_assert_not_reached ("unhandled dynamic_prop kind"); | |
891 | } | |
892 | ||
893 | /* See gdbtypes.h. */ | |
894 | ||
895 | bool | |
896 | operator== (const range_bounds &l, const range_bounds &r) | |
897 | { | |
898 | #define FIELD_EQ(FIELD) (l.FIELD == r.FIELD) | |
899 | ||
900 | return (FIELD_EQ (low) | |
901 | && FIELD_EQ (high) | |
902 | && FIELD_EQ (flag_upper_bound_is_count) | |
903 | && FIELD_EQ (flag_bound_evaluated)); | |
904 | ||
905 | #undef FIELD_EQ | |
906 | } | |
907 | ||
729efb13 SA |
908 | /* Create a range type with a dynamic range from LOW_BOUND to |
909 | HIGH_BOUND, inclusive. See create_range_type for further details. */ | |
c906108c SS |
910 | |
911 | struct type * | |
729efb13 SA |
912 | create_range_type (struct type *result_type, struct type *index_type, |
913 | const struct dynamic_prop *low_bound, | |
914 | const struct dynamic_prop *high_bound) | |
c906108c SS |
915 | { |
916 | if (result_type == NULL) | |
e9bb382b | 917 | result_type = alloc_type_copy (index_type); |
c906108c SS |
918 | TYPE_CODE (result_type) = TYPE_CODE_RANGE; |
919 | TYPE_TARGET_TYPE (result_type) = index_type; | |
74a9bb82 | 920 | if (TYPE_STUB (index_type)) |
876cecd0 | 921 | TYPE_TARGET_STUB (result_type) = 1; |
c906108c SS |
922 | else |
923 | TYPE_LENGTH (result_type) = TYPE_LENGTH (check_typedef (index_type)); | |
729efb13 | 924 | |
43bbcdc2 PH |
925 | TYPE_RANGE_DATA (result_type) = (struct range_bounds *) |
926 | TYPE_ZALLOC (result_type, sizeof (struct range_bounds)); | |
729efb13 SA |
927 | TYPE_RANGE_DATA (result_type)->low = *low_bound; |
928 | TYPE_RANGE_DATA (result_type)->high = *high_bound; | |
c906108c | 929 | |
729efb13 | 930 | if (low_bound->kind == PROP_CONST && low_bound->data.const_val >= 0) |
876cecd0 | 931 | TYPE_UNSIGNED (result_type) = 1; |
c906108c | 932 | |
45e44d27 JB |
933 | /* Ada allows the declaration of range types whose upper bound is |
934 | less than the lower bound, so checking the lower bound is not | |
935 | enough. Make sure we do not mark a range type whose upper bound | |
936 | is negative as unsigned. */ | |
937 | if (high_bound->kind == PROP_CONST && high_bound->data.const_val < 0) | |
938 | TYPE_UNSIGNED (result_type) = 0; | |
939 | ||
262452ec | 940 | return result_type; |
c906108c SS |
941 | } |
942 | ||
729efb13 SA |
943 | /* Create a range type using either a blank type supplied in |
944 | RESULT_TYPE, or creating a new type, inheriting the objfile from | |
945 | INDEX_TYPE. | |
946 | ||
947 | Indices will be of type INDEX_TYPE, and will range from LOW_BOUND | |
948 | to HIGH_BOUND, inclusive. | |
949 | ||
950 | FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make | |
951 | sure it is TYPE_CODE_UNDEF before we bash it into a range type? */ | |
952 | ||
953 | struct type * | |
954 | create_static_range_type (struct type *result_type, struct type *index_type, | |
955 | LONGEST low_bound, LONGEST high_bound) | |
956 | { | |
957 | struct dynamic_prop low, high; | |
958 | ||
959 | low.kind = PROP_CONST; | |
960 | low.data.const_val = low_bound; | |
961 | ||
962 | high.kind = PROP_CONST; | |
963 | high.data.const_val = high_bound; | |
964 | ||
965 | result_type = create_range_type (result_type, index_type, &low, &high); | |
966 | ||
967 | return result_type; | |
968 | } | |
969 | ||
80180f79 SA |
970 | /* Predicate tests whether BOUNDS are static. Returns 1 if all bounds values |
971 | are static, otherwise returns 0. */ | |
972 | ||
973 | static int | |
974 | has_static_range (const struct range_bounds *bounds) | |
975 | { | |
976 | return (bounds->low.kind == PROP_CONST | |
977 | && bounds->high.kind == PROP_CONST); | |
978 | } | |
979 | ||
980 | ||
7ba81444 MS |
981 | /* Set *LOWP and *HIGHP to the lower and upper bounds of discrete type |
982 | TYPE. Return 1 if type is a range type, 0 if it is discrete (and | |
983 | bounds will fit in LONGEST), or -1 otherwise. */ | |
c906108c SS |
984 | |
985 | int | |
fba45db2 | 986 | get_discrete_bounds (struct type *type, LONGEST *lowp, LONGEST *highp) |
c906108c | 987 | { |
f168693b | 988 | type = check_typedef (type); |
c906108c SS |
989 | switch (TYPE_CODE (type)) |
990 | { | |
991 | case TYPE_CODE_RANGE: | |
992 | *lowp = TYPE_LOW_BOUND (type); | |
993 | *highp = TYPE_HIGH_BOUND (type); | |
994 | return 1; | |
995 | case TYPE_CODE_ENUM: | |
996 | if (TYPE_NFIELDS (type) > 0) | |
997 | { | |
998 | /* The enums may not be sorted by value, so search all | |
0963b4bd | 999 | entries. */ |
c906108c SS |
1000 | int i; |
1001 | ||
14e75d8e | 1002 | *lowp = *highp = TYPE_FIELD_ENUMVAL (type, 0); |
c906108c SS |
1003 | for (i = 0; i < TYPE_NFIELDS (type); i++) |
1004 | { | |
14e75d8e JK |
1005 | if (TYPE_FIELD_ENUMVAL (type, i) < *lowp) |
1006 | *lowp = TYPE_FIELD_ENUMVAL (type, i); | |
1007 | if (TYPE_FIELD_ENUMVAL (type, i) > *highp) | |
1008 | *highp = TYPE_FIELD_ENUMVAL (type, i); | |
c906108c SS |
1009 | } |
1010 | ||
7ba81444 | 1011 | /* Set unsigned indicator if warranted. */ |
c5aa993b | 1012 | if (*lowp >= 0) |
c906108c | 1013 | { |
876cecd0 | 1014 | TYPE_UNSIGNED (type) = 1; |
c906108c SS |
1015 | } |
1016 | } | |
1017 | else | |
1018 | { | |
1019 | *lowp = 0; | |
1020 | *highp = -1; | |
1021 | } | |
1022 | return 0; | |
1023 | case TYPE_CODE_BOOL: | |
1024 | *lowp = 0; | |
1025 | *highp = 1; | |
1026 | return 0; | |
1027 | case TYPE_CODE_INT: | |
c5aa993b | 1028 | if (TYPE_LENGTH (type) > sizeof (LONGEST)) /* Too big */ |
c906108c SS |
1029 | return -1; |
1030 | if (!TYPE_UNSIGNED (type)) | |
1031 | { | |
c5aa993b | 1032 | *lowp = -(1 << (TYPE_LENGTH (type) * TARGET_CHAR_BIT - 1)); |
c906108c SS |
1033 | *highp = -*lowp - 1; |
1034 | return 0; | |
1035 | } | |
86a73007 | 1036 | /* fall through */ |
c906108c SS |
1037 | case TYPE_CODE_CHAR: |
1038 | *lowp = 0; | |
1039 | /* This round-about calculation is to avoid shifting by | |
7b83ea04 | 1040 | TYPE_LENGTH (type) * TARGET_CHAR_BIT, which will not work |
7ba81444 | 1041 | if TYPE_LENGTH (type) == sizeof (LONGEST). */ |
c906108c SS |
1042 | *highp = 1 << (TYPE_LENGTH (type) * TARGET_CHAR_BIT - 1); |
1043 | *highp = (*highp - 1) | *highp; | |
1044 | return 0; | |
1045 | default: | |
1046 | return -1; | |
1047 | } | |
1048 | } | |
1049 | ||
dbc98a8b KW |
1050 | /* Assuming TYPE is a simple, non-empty array type, compute its upper |
1051 | and lower bound. Save the low bound into LOW_BOUND if not NULL. | |
1052 | Save the high bound into HIGH_BOUND if not NULL. | |
1053 | ||
0963b4bd | 1054 | Return 1 if the operation was successful. Return zero otherwise, |
dbc98a8b KW |
1055 | in which case the values of LOW_BOUND and HIGH_BOUNDS are unmodified. |
1056 | ||
1057 | We now simply use get_discrete_bounds call to get the values | |
1058 | of the low and high bounds. | |
1059 | get_discrete_bounds can return three values: | |
1060 | 1, meaning that index is a range, | |
1061 | 0, meaning that index is a discrete type, | |
1062 | or -1 for failure. */ | |
1063 | ||
1064 | int | |
1065 | get_array_bounds (struct type *type, LONGEST *low_bound, LONGEST *high_bound) | |
1066 | { | |
1067 | struct type *index = TYPE_INDEX_TYPE (type); | |
1068 | LONGEST low = 0; | |
1069 | LONGEST high = 0; | |
1070 | int res; | |
1071 | ||
1072 | if (index == NULL) | |
1073 | return 0; | |
1074 | ||
1075 | res = get_discrete_bounds (index, &low, &high); | |
1076 | if (res == -1) | |
1077 | return 0; | |
1078 | ||
1079 | /* Check if the array bounds are undefined. */ | |
1080 | if (res == 1 | |
1081 | && ((low_bound && TYPE_ARRAY_LOWER_BOUND_IS_UNDEFINED (type)) | |
1082 | || (high_bound && TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED (type)))) | |
1083 | return 0; | |
1084 | ||
1085 | if (low_bound) | |
1086 | *low_bound = low; | |
1087 | ||
1088 | if (high_bound) | |
1089 | *high_bound = high; | |
1090 | ||
1091 | return 1; | |
1092 | } | |
1093 | ||
aa715135 JG |
1094 | /* Assuming that TYPE is a discrete type and VAL is a valid integer |
1095 | representation of a value of this type, save the corresponding | |
1096 | position number in POS. | |
1097 | ||
1098 | Its differs from VAL only in the case of enumeration types. In | |
1099 | this case, the position number of the value of the first listed | |
1100 | enumeration literal is zero; the position number of the value of | |
1101 | each subsequent enumeration literal is one more than that of its | |
1102 | predecessor in the list. | |
1103 | ||
1104 | Return 1 if the operation was successful. Return zero otherwise, | |
1105 | in which case the value of POS is unmodified. | |
1106 | */ | |
1107 | ||
1108 | int | |
1109 | discrete_position (struct type *type, LONGEST val, LONGEST *pos) | |
1110 | { | |
1111 | if (TYPE_CODE (type) == TYPE_CODE_ENUM) | |
1112 | { | |
1113 | int i; | |
1114 | ||
1115 | for (i = 0; i < TYPE_NFIELDS (type); i += 1) | |
1116 | { | |
1117 | if (val == TYPE_FIELD_ENUMVAL (type, i)) | |
1118 | { | |
1119 | *pos = i; | |
1120 | return 1; | |
1121 | } | |
1122 | } | |
1123 | /* Invalid enumeration value. */ | |
1124 | return 0; | |
1125 | } | |
1126 | else | |
1127 | { | |
1128 | *pos = val; | |
1129 | return 1; | |
1130 | } | |
1131 | } | |
1132 | ||
7ba81444 MS |
1133 | /* Create an array type using either a blank type supplied in |
1134 | RESULT_TYPE, or creating a new type, inheriting the objfile from | |
1135 | RANGE_TYPE. | |
c906108c SS |
1136 | |
1137 | Elements will be of type ELEMENT_TYPE, the indices will be of type | |
1138 | RANGE_TYPE. | |
1139 | ||
a405673c JB |
1140 | BYTE_STRIDE_PROP, when not NULL, provides the array's byte stride. |
1141 | This byte stride property is added to the resulting array type | |
1142 | as a DYN_PROP_BYTE_STRIDE. As a consequence, the BYTE_STRIDE_PROP | |
1143 | argument can only be used to create types that are objfile-owned | |
1144 | (see add_dyn_prop), meaning that either this function must be called | |
1145 | with an objfile-owned RESULT_TYPE, or an objfile-owned RANGE_TYPE. | |
1146 | ||
1147 | BIT_STRIDE is taken into account only when BYTE_STRIDE_PROP is NULL. | |
dc53a7ad JB |
1148 | If BIT_STRIDE is not zero, build a packed array type whose element |
1149 | size is BIT_STRIDE. Otherwise, ignore this parameter. | |
1150 | ||
7ba81444 MS |
1151 | FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make |
1152 | sure it is TYPE_CODE_UNDEF before we bash it into an array | |
1153 | type? */ | |
c906108c SS |
1154 | |
1155 | struct type * | |
dc53a7ad JB |
1156 | create_array_type_with_stride (struct type *result_type, |
1157 | struct type *element_type, | |
1158 | struct type *range_type, | |
a405673c | 1159 | struct dynamic_prop *byte_stride_prop, |
dc53a7ad | 1160 | unsigned int bit_stride) |
c906108c | 1161 | { |
a405673c JB |
1162 | if (byte_stride_prop != NULL |
1163 | && byte_stride_prop->kind == PROP_CONST) | |
1164 | { | |
1165 | /* The byte stride is actually not dynamic. Pretend we were | |
1166 | called with bit_stride set instead of byte_stride_prop. | |
1167 | This will give us the same result type, while avoiding | |
1168 | the need to handle this as a special case. */ | |
1169 | bit_stride = byte_stride_prop->data.const_val * 8; | |
1170 | byte_stride_prop = NULL; | |
1171 | } | |
1172 | ||
c906108c | 1173 | if (result_type == NULL) |
e9bb382b UW |
1174 | result_type = alloc_type_copy (range_type); |
1175 | ||
c906108c SS |
1176 | TYPE_CODE (result_type) = TYPE_CODE_ARRAY; |
1177 | TYPE_TARGET_TYPE (result_type) = element_type; | |
a405673c JB |
1178 | if (byte_stride_prop == NULL |
1179 | && has_static_range (TYPE_RANGE_DATA (range_type)) | |
b4a7fcab JB |
1180 | && (!type_not_associated (result_type) |
1181 | && !type_not_allocated (result_type))) | |
80180f79 SA |
1182 | { |
1183 | LONGEST low_bound, high_bound; | |
1184 | ||
1185 | if (get_discrete_bounds (range_type, &low_bound, &high_bound) < 0) | |
1186 | low_bound = high_bound = 0; | |
f168693b | 1187 | element_type = check_typedef (element_type); |
80180f79 SA |
1188 | /* Be careful when setting the array length. Ada arrays can be |
1189 | empty arrays with the high_bound being smaller than the low_bound. | |
1190 | In such cases, the array length should be zero. */ | |
1191 | if (high_bound < low_bound) | |
1192 | TYPE_LENGTH (result_type) = 0; | |
1193 | else if (bit_stride > 0) | |
1194 | TYPE_LENGTH (result_type) = | |
1195 | (bit_stride * (high_bound - low_bound + 1) + 7) / 8; | |
1196 | else | |
1197 | TYPE_LENGTH (result_type) = | |
1198 | TYPE_LENGTH (element_type) * (high_bound - low_bound + 1); | |
1199 | } | |
ab0d6e0d | 1200 | else |
80180f79 SA |
1201 | { |
1202 | /* This type is dynamic and its length needs to be computed | |
1203 | on demand. In the meantime, avoid leaving the TYPE_LENGTH | |
1204 | undefined by setting it to zero. Although we are not expected | |
1205 | to trust TYPE_LENGTH in this case, setting the size to zero | |
1206 | allows us to avoid allocating objects of random sizes in case | |
1207 | we accidently do. */ | |
1208 | TYPE_LENGTH (result_type) = 0; | |
1209 | } | |
1210 | ||
c906108c SS |
1211 | TYPE_NFIELDS (result_type) = 1; |
1212 | TYPE_FIELDS (result_type) = | |
1deafd4e | 1213 | (struct field *) TYPE_ZALLOC (result_type, sizeof (struct field)); |
262452ec | 1214 | TYPE_INDEX_TYPE (result_type) = range_type; |
a405673c | 1215 | if (byte_stride_prop != NULL) |
50a82047 | 1216 | add_dyn_prop (DYN_PROP_BYTE_STRIDE, *byte_stride_prop, result_type); |
a405673c | 1217 | else if (bit_stride > 0) |
dc53a7ad | 1218 | TYPE_FIELD_BITSIZE (result_type, 0) = bit_stride; |
c906108c | 1219 | |
a9ff5f12 | 1220 | /* TYPE_TARGET_STUB will take care of zero length arrays. */ |
c906108c | 1221 | if (TYPE_LENGTH (result_type) == 0) |
876cecd0 | 1222 | TYPE_TARGET_STUB (result_type) = 1; |
c906108c | 1223 | |
c16abbde | 1224 | return result_type; |
c906108c SS |
1225 | } |
1226 | ||
dc53a7ad JB |
1227 | /* Same as create_array_type_with_stride but with no bit_stride |
1228 | (BIT_STRIDE = 0), thus building an unpacked array. */ | |
1229 | ||
1230 | struct type * | |
1231 | create_array_type (struct type *result_type, | |
1232 | struct type *element_type, | |
1233 | struct type *range_type) | |
1234 | { | |
1235 | return create_array_type_with_stride (result_type, element_type, | |
a405673c | 1236 | range_type, NULL, 0); |
dc53a7ad JB |
1237 | } |
1238 | ||
e3506a9f UW |
1239 | struct type * |
1240 | lookup_array_range_type (struct type *element_type, | |
63375b74 | 1241 | LONGEST low_bound, LONGEST high_bound) |
e3506a9f | 1242 | { |
929b5ad4 JB |
1243 | struct type *index_type; |
1244 | struct type *range_type; | |
1245 | ||
1246 | if (TYPE_OBJFILE_OWNED (element_type)) | |
1247 | index_type = objfile_type (TYPE_OWNER (element_type).objfile)->builtin_int; | |
1248 | else | |
1249 | index_type = builtin_type (get_type_arch (element_type))->builtin_int; | |
1250 | range_type = create_static_range_type (NULL, index_type, | |
1251 | low_bound, high_bound); | |
d8734c88 | 1252 | |
e3506a9f UW |
1253 | return create_array_type (NULL, element_type, range_type); |
1254 | } | |
1255 | ||
7ba81444 MS |
1256 | /* Create a string type using either a blank type supplied in |
1257 | RESULT_TYPE, or creating a new type. String types are similar | |
1258 | enough to array of char types that we can use create_array_type to | |
1259 | build the basic type and then bash it into a string type. | |
c906108c SS |
1260 | |
1261 | For fixed length strings, the range type contains 0 as the lower | |
1262 | bound and the length of the string minus one as the upper bound. | |
1263 | ||
7ba81444 MS |
1264 | FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make |
1265 | sure it is TYPE_CODE_UNDEF before we bash it into a string | |
1266 | type? */ | |
c906108c SS |
1267 | |
1268 | struct type * | |
3b7538c0 UW |
1269 | create_string_type (struct type *result_type, |
1270 | struct type *string_char_type, | |
7ba81444 | 1271 | struct type *range_type) |
c906108c SS |
1272 | { |
1273 | result_type = create_array_type (result_type, | |
f290d38e | 1274 | string_char_type, |
c906108c SS |
1275 | range_type); |
1276 | TYPE_CODE (result_type) = TYPE_CODE_STRING; | |
c16abbde | 1277 | return result_type; |
c906108c SS |
1278 | } |
1279 | ||
e3506a9f UW |
1280 | struct type * |
1281 | lookup_string_range_type (struct type *string_char_type, | |
63375b74 | 1282 | LONGEST low_bound, LONGEST high_bound) |
e3506a9f UW |
1283 | { |
1284 | struct type *result_type; | |
d8734c88 | 1285 | |
e3506a9f UW |
1286 | result_type = lookup_array_range_type (string_char_type, |
1287 | low_bound, high_bound); | |
1288 | TYPE_CODE (result_type) = TYPE_CODE_STRING; | |
1289 | return result_type; | |
1290 | } | |
1291 | ||
c906108c | 1292 | struct type * |
fba45db2 | 1293 | create_set_type (struct type *result_type, struct type *domain_type) |
c906108c | 1294 | { |
c906108c | 1295 | if (result_type == NULL) |
e9bb382b UW |
1296 | result_type = alloc_type_copy (domain_type); |
1297 | ||
c906108c SS |
1298 | TYPE_CODE (result_type) = TYPE_CODE_SET; |
1299 | TYPE_NFIELDS (result_type) = 1; | |
224c3ddb SM |
1300 | TYPE_FIELDS (result_type) |
1301 | = (struct field *) TYPE_ZALLOC (result_type, sizeof (struct field)); | |
c906108c | 1302 | |
74a9bb82 | 1303 | if (!TYPE_STUB (domain_type)) |
c906108c | 1304 | { |
f9780d5b | 1305 | LONGEST low_bound, high_bound, bit_length; |
d8734c88 | 1306 | |
c906108c SS |
1307 | if (get_discrete_bounds (domain_type, &low_bound, &high_bound) < 0) |
1308 | low_bound = high_bound = 0; | |
1309 | bit_length = high_bound - low_bound + 1; | |
1310 | TYPE_LENGTH (result_type) | |
1311 | = (bit_length + TARGET_CHAR_BIT - 1) / TARGET_CHAR_BIT; | |
f9780d5b | 1312 | if (low_bound >= 0) |
876cecd0 | 1313 | TYPE_UNSIGNED (result_type) = 1; |
c906108c SS |
1314 | } |
1315 | TYPE_FIELD_TYPE (result_type, 0) = domain_type; | |
1316 | ||
c16abbde | 1317 | return result_type; |
c906108c SS |
1318 | } |
1319 | ||
ea37ba09 DJ |
1320 | /* Convert ARRAY_TYPE to a vector type. This may modify ARRAY_TYPE |
1321 | and any array types nested inside it. */ | |
1322 | ||
1323 | void | |
1324 | make_vector_type (struct type *array_type) | |
1325 | { | |
1326 | struct type *inner_array, *elt_type; | |
1327 | int flags; | |
1328 | ||
1329 | /* Find the innermost array type, in case the array is | |
1330 | multi-dimensional. */ | |
1331 | inner_array = array_type; | |
1332 | while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array)) == TYPE_CODE_ARRAY) | |
1333 | inner_array = TYPE_TARGET_TYPE (inner_array); | |
1334 | ||
1335 | elt_type = TYPE_TARGET_TYPE (inner_array); | |
1336 | if (TYPE_CODE (elt_type) == TYPE_CODE_INT) | |
1337 | { | |
2844d6b5 | 1338 | flags = TYPE_INSTANCE_FLAGS (elt_type) | TYPE_INSTANCE_FLAG_NOTTEXT; |
ea37ba09 DJ |
1339 | elt_type = make_qualified_type (elt_type, flags, NULL); |
1340 | TYPE_TARGET_TYPE (inner_array) = elt_type; | |
1341 | } | |
1342 | ||
876cecd0 | 1343 | TYPE_VECTOR (array_type) = 1; |
ea37ba09 DJ |
1344 | } |
1345 | ||
794ac428 | 1346 | struct type * |
ac3aafc7 EZ |
1347 | init_vector_type (struct type *elt_type, int n) |
1348 | { | |
1349 | struct type *array_type; | |
d8734c88 | 1350 | |
e3506a9f | 1351 | array_type = lookup_array_range_type (elt_type, 0, n - 1); |
ea37ba09 | 1352 | make_vector_type (array_type); |
ac3aafc7 EZ |
1353 | return array_type; |
1354 | } | |
1355 | ||
09e2d7c7 DE |
1356 | /* Internal routine called by TYPE_SELF_TYPE to return the type that TYPE |
1357 | belongs to. In c++ this is the class of "this", but TYPE_THIS_TYPE is too | |
1358 | confusing. "self" is a common enough replacement for "this". | |
1359 | TYPE must be one of TYPE_CODE_METHODPTR, TYPE_CODE_MEMBERPTR, or | |
1360 | TYPE_CODE_METHOD. */ | |
1361 | ||
1362 | struct type * | |
1363 | internal_type_self_type (struct type *type) | |
1364 | { | |
1365 | switch (TYPE_CODE (type)) | |
1366 | { | |
1367 | case TYPE_CODE_METHODPTR: | |
1368 | case TYPE_CODE_MEMBERPTR: | |
eaaf76ab DE |
1369 | if (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_NONE) |
1370 | return NULL; | |
09e2d7c7 DE |
1371 | gdb_assert (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_SELF_TYPE); |
1372 | return TYPE_MAIN_TYPE (type)->type_specific.self_type; | |
1373 | case TYPE_CODE_METHOD: | |
eaaf76ab DE |
1374 | if (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_NONE) |
1375 | return NULL; | |
09e2d7c7 DE |
1376 | gdb_assert (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_FUNC); |
1377 | return TYPE_MAIN_TYPE (type)->type_specific.func_stuff->self_type; | |
1378 | default: | |
1379 | gdb_assert_not_reached ("bad type"); | |
1380 | } | |
1381 | } | |
1382 | ||
1383 | /* Set the type of the class that TYPE belongs to. | |
1384 | In c++ this is the class of "this". | |
1385 | TYPE must be one of TYPE_CODE_METHODPTR, TYPE_CODE_MEMBERPTR, or | |
1386 | TYPE_CODE_METHOD. */ | |
1387 | ||
1388 | void | |
1389 | set_type_self_type (struct type *type, struct type *self_type) | |
1390 | { | |
1391 | switch (TYPE_CODE (type)) | |
1392 | { | |
1393 | case TYPE_CODE_METHODPTR: | |
1394 | case TYPE_CODE_MEMBERPTR: | |
1395 | if (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_NONE) | |
1396 | TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_SELF_TYPE; | |
1397 | gdb_assert (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_SELF_TYPE); | |
1398 | TYPE_MAIN_TYPE (type)->type_specific.self_type = self_type; | |
1399 | break; | |
1400 | case TYPE_CODE_METHOD: | |
1401 | if (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_NONE) | |
1402 | INIT_FUNC_SPECIFIC (type); | |
1403 | gdb_assert (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_FUNC); | |
1404 | TYPE_MAIN_TYPE (type)->type_specific.func_stuff->self_type = self_type; | |
1405 | break; | |
1406 | default: | |
1407 | gdb_assert_not_reached ("bad type"); | |
1408 | } | |
1409 | } | |
1410 | ||
1411 | /* Smash TYPE to be a type of pointers to members of SELF_TYPE with type | |
0d5de010 DJ |
1412 | TO_TYPE. A member pointer is a wierd thing -- it amounts to a |
1413 | typed offset into a struct, e.g. "an int at offset 8". A MEMBER | |
1414 | TYPE doesn't include the offset (that's the value of the MEMBER | |
1415 | itself), but does include the structure type into which it points | |
1416 | (for some reason). | |
c906108c | 1417 | |
7ba81444 MS |
1418 | When "smashing" the type, we preserve the objfile that the old type |
1419 | pointed to, since we aren't changing where the type is actually | |
c906108c SS |
1420 | allocated. */ |
1421 | ||
1422 | void | |
09e2d7c7 | 1423 | smash_to_memberptr_type (struct type *type, struct type *self_type, |
0d5de010 | 1424 | struct type *to_type) |
c906108c | 1425 | { |
2fdde8f8 | 1426 | smash_type (type); |
09e2d7c7 | 1427 | TYPE_CODE (type) = TYPE_CODE_MEMBERPTR; |
c906108c | 1428 | TYPE_TARGET_TYPE (type) = to_type; |
09e2d7c7 | 1429 | set_type_self_type (type, self_type); |
0d5de010 DJ |
1430 | /* Assume that a data member pointer is the same size as a normal |
1431 | pointer. */ | |
50810684 UW |
1432 | TYPE_LENGTH (type) |
1433 | = gdbarch_ptr_bit (get_type_arch (to_type)) / TARGET_CHAR_BIT; | |
c906108c SS |
1434 | } |
1435 | ||
0b92b5bb TT |
1436 | /* Smash TYPE to be a type of pointer to methods type TO_TYPE. |
1437 | ||
1438 | When "smashing" the type, we preserve the objfile that the old type | |
1439 | pointed to, since we aren't changing where the type is actually | |
1440 | allocated. */ | |
1441 | ||
1442 | void | |
1443 | smash_to_methodptr_type (struct type *type, struct type *to_type) | |
1444 | { | |
1445 | smash_type (type); | |
09e2d7c7 | 1446 | TYPE_CODE (type) = TYPE_CODE_METHODPTR; |
0b92b5bb | 1447 | TYPE_TARGET_TYPE (type) = to_type; |
09e2d7c7 | 1448 | set_type_self_type (type, TYPE_SELF_TYPE (to_type)); |
0b92b5bb | 1449 | TYPE_LENGTH (type) = cplus_method_ptr_size (to_type); |
0b92b5bb TT |
1450 | } |
1451 | ||
09e2d7c7 | 1452 | /* Smash TYPE to be a type of method of SELF_TYPE with type TO_TYPE. |
c906108c SS |
1453 | METHOD just means `function that gets an extra "this" argument'. |
1454 | ||
7ba81444 MS |
1455 | When "smashing" the type, we preserve the objfile that the old type |
1456 | pointed to, since we aren't changing where the type is actually | |
c906108c SS |
1457 | allocated. */ |
1458 | ||
1459 | void | |
09e2d7c7 | 1460 | smash_to_method_type (struct type *type, struct type *self_type, |
ad2f7632 DJ |
1461 | struct type *to_type, struct field *args, |
1462 | int nargs, int varargs) | |
c906108c | 1463 | { |
2fdde8f8 | 1464 | smash_type (type); |
09e2d7c7 | 1465 | TYPE_CODE (type) = TYPE_CODE_METHOD; |
c906108c | 1466 | TYPE_TARGET_TYPE (type) = to_type; |
09e2d7c7 | 1467 | set_type_self_type (type, self_type); |
ad2f7632 DJ |
1468 | TYPE_FIELDS (type) = args; |
1469 | TYPE_NFIELDS (type) = nargs; | |
1470 | if (varargs) | |
876cecd0 | 1471 | TYPE_VARARGS (type) = 1; |
c906108c | 1472 | TYPE_LENGTH (type) = 1; /* In practice, this is never needed. */ |
c906108c SS |
1473 | } |
1474 | ||
a737d952 | 1475 | /* A wrapper of TYPE_NAME which calls error if the type is anonymous. |
d8228535 JK |
1476 | Since GCC PR debug/47510 DWARF provides associated information to detect the |
1477 | anonymous class linkage name from its typedef. | |
1478 | ||
1479 | Parameter TYPE should not yet have CHECK_TYPEDEF applied, this function will | |
1480 | apply it itself. */ | |
1481 | ||
1482 | const char * | |
a737d952 | 1483 | type_name_or_error (struct type *type) |
d8228535 JK |
1484 | { |
1485 | struct type *saved_type = type; | |
1486 | const char *name; | |
1487 | struct objfile *objfile; | |
1488 | ||
f168693b | 1489 | type = check_typedef (type); |
d8228535 | 1490 | |
a737d952 | 1491 | name = TYPE_NAME (type); |
d8228535 JK |
1492 | if (name != NULL) |
1493 | return name; | |
1494 | ||
a737d952 | 1495 | name = TYPE_NAME (saved_type); |
d8228535 JK |
1496 | objfile = TYPE_OBJFILE (saved_type); |
1497 | error (_("Invalid anonymous type %s [in module %s], GCC PR debug/47510 bug?"), | |
4262abfb JK |
1498 | name ? name : "<anonymous>", |
1499 | objfile ? objfile_name (objfile) : "<arch>"); | |
d8228535 JK |
1500 | } |
1501 | ||
7ba81444 MS |
1502 | /* Lookup a typedef or primitive type named NAME, visible in lexical |
1503 | block BLOCK. If NOERR is nonzero, return zero if NAME is not | |
1504 | suitably defined. */ | |
c906108c SS |
1505 | |
1506 | struct type * | |
e6c014f2 | 1507 | lookup_typename (const struct language_defn *language, |
ddd49eee | 1508 | struct gdbarch *gdbarch, const char *name, |
34eaf542 | 1509 | const struct block *block, int noerr) |
c906108c | 1510 | { |
52f0bd74 | 1511 | struct symbol *sym; |
c906108c | 1512 | |
1994afbf | 1513 | sym = lookup_symbol_in_language (name, block, VAR_DOMAIN, |
d12307c1 | 1514 | language->la_language, NULL).symbol; |
c51fe631 DE |
1515 | if (sym != NULL && SYMBOL_CLASS (sym) == LOC_TYPEDEF) |
1516 | return SYMBOL_TYPE (sym); | |
1517 | ||
c51fe631 DE |
1518 | if (noerr) |
1519 | return NULL; | |
1520 | error (_("No type named %s."), name); | |
c906108c SS |
1521 | } |
1522 | ||
1523 | struct type * | |
e6c014f2 | 1524 | lookup_unsigned_typename (const struct language_defn *language, |
0d5cff50 | 1525 | struct gdbarch *gdbarch, const char *name) |
c906108c | 1526 | { |
224c3ddb | 1527 | char *uns = (char *) alloca (strlen (name) + 10); |
c906108c SS |
1528 | |
1529 | strcpy (uns, "unsigned "); | |
1530 | strcpy (uns + 9, name); | |
582942f4 | 1531 | return lookup_typename (language, gdbarch, uns, NULL, 0); |
c906108c SS |
1532 | } |
1533 | ||
1534 | struct type * | |
e6c014f2 | 1535 | lookup_signed_typename (const struct language_defn *language, |
0d5cff50 | 1536 | struct gdbarch *gdbarch, const char *name) |
c906108c SS |
1537 | { |
1538 | struct type *t; | |
224c3ddb | 1539 | char *uns = (char *) alloca (strlen (name) + 8); |
c906108c SS |
1540 | |
1541 | strcpy (uns, "signed "); | |
1542 | strcpy (uns + 7, name); | |
582942f4 | 1543 | t = lookup_typename (language, gdbarch, uns, NULL, 1); |
7ba81444 | 1544 | /* If we don't find "signed FOO" just try again with plain "FOO". */ |
c906108c SS |
1545 | if (t != NULL) |
1546 | return t; | |
582942f4 | 1547 | return lookup_typename (language, gdbarch, name, NULL, 0); |
c906108c SS |
1548 | } |
1549 | ||
1550 | /* Lookup a structure type named "struct NAME", | |
1551 | visible in lexical block BLOCK. */ | |
1552 | ||
1553 | struct type * | |
270140bd | 1554 | lookup_struct (const char *name, const struct block *block) |
c906108c | 1555 | { |
52f0bd74 | 1556 | struct symbol *sym; |
c906108c | 1557 | |
d12307c1 | 1558 | sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0).symbol; |
c906108c SS |
1559 | |
1560 | if (sym == NULL) | |
1561 | { | |
8a3fe4f8 | 1562 | error (_("No struct type named %s."), name); |
c906108c SS |
1563 | } |
1564 | if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_STRUCT) | |
1565 | { | |
7ba81444 MS |
1566 | error (_("This context has class, union or enum %s, not a struct."), |
1567 | name); | |
c906108c SS |
1568 | } |
1569 | return (SYMBOL_TYPE (sym)); | |
1570 | } | |
1571 | ||
1572 | /* Lookup a union type named "union NAME", | |
1573 | visible in lexical block BLOCK. */ | |
1574 | ||
1575 | struct type * | |
270140bd | 1576 | lookup_union (const char *name, const struct block *block) |
c906108c | 1577 | { |
52f0bd74 | 1578 | struct symbol *sym; |
c5aa993b | 1579 | struct type *t; |
c906108c | 1580 | |
d12307c1 | 1581 | sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0).symbol; |
c906108c SS |
1582 | |
1583 | if (sym == NULL) | |
8a3fe4f8 | 1584 | error (_("No union type named %s."), name); |
c906108c | 1585 | |
c5aa993b | 1586 | t = SYMBOL_TYPE (sym); |
c906108c SS |
1587 | |
1588 | if (TYPE_CODE (t) == TYPE_CODE_UNION) | |
c16abbde | 1589 | return t; |
c906108c | 1590 | |
7ba81444 MS |
1591 | /* If we get here, it's not a union. */ |
1592 | error (_("This context has class, struct or enum %s, not a union."), | |
1593 | name); | |
c906108c SS |
1594 | } |
1595 | ||
c906108c SS |
1596 | /* Lookup an enum type named "enum NAME", |
1597 | visible in lexical block BLOCK. */ | |
1598 | ||
1599 | struct type * | |
270140bd | 1600 | lookup_enum (const char *name, const struct block *block) |
c906108c | 1601 | { |
52f0bd74 | 1602 | struct symbol *sym; |
c906108c | 1603 | |
d12307c1 | 1604 | sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0).symbol; |
c906108c SS |
1605 | if (sym == NULL) |
1606 | { | |
8a3fe4f8 | 1607 | error (_("No enum type named %s."), name); |
c906108c SS |
1608 | } |
1609 | if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_ENUM) | |
1610 | { | |
7ba81444 MS |
1611 | error (_("This context has class, struct or union %s, not an enum."), |
1612 | name); | |
c906108c SS |
1613 | } |
1614 | return (SYMBOL_TYPE (sym)); | |
1615 | } | |
1616 | ||
1617 | /* Lookup a template type named "template NAME<TYPE>", | |
1618 | visible in lexical block BLOCK. */ | |
1619 | ||
1620 | struct type * | |
7ba81444 | 1621 | lookup_template_type (char *name, struct type *type, |
270140bd | 1622 | const struct block *block) |
c906108c SS |
1623 | { |
1624 | struct symbol *sym; | |
7ba81444 MS |
1625 | char *nam = (char *) |
1626 | alloca (strlen (name) + strlen (TYPE_NAME (type)) + 4); | |
d8734c88 | 1627 | |
c906108c SS |
1628 | strcpy (nam, name); |
1629 | strcat (nam, "<"); | |
0004e5a2 | 1630 | strcat (nam, TYPE_NAME (type)); |
0963b4bd | 1631 | strcat (nam, " >"); /* FIXME, extra space still introduced in gcc? */ |
c906108c | 1632 | |
d12307c1 | 1633 | sym = lookup_symbol (nam, block, VAR_DOMAIN, 0).symbol; |
c906108c SS |
1634 | |
1635 | if (sym == NULL) | |
1636 | { | |
8a3fe4f8 | 1637 | error (_("No template type named %s."), name); |
c906108c SS |
1638 | } |
1639 | if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_STRUCT) | |
1640 | { | |
7ba81444 MS |
1641 | error (_("This context has class, union or enum %s, not a struct."), |
1642 | name); | |
c906108c SS |
1643 | } |
1644 | return (SYMBOL_TYPE (sym)); | |
1645 | } | |
1646 | ||
ef0bd204 | 1647 | /* See gdbtypes.h. */ |
c906108c | 1648 | |
ef0bd204 JB |
1649 | struct_elt |
1650 | lookup_struct_elt (struct type *type, const char *name, int noerr) | |
c906108c SS |
1651 | { |
1652 | int i; | |
1653 | ||
1654 | for (;;) | |
1655 | { | |
f168693b | 1656 | type = check_typedef (type); |
c906108c SS |
1657 | if (TYPE_CODE (type) != TYPE_CODE_PTR |
1658 | && TYPE_CODE (type) != TYPE_CODE_REF) | |
1659 | break; | |
1660 | type = TYPE_TARGET_TYPE (type); | |
1661 | } | |
1662 | ||
687d6395 MS |
1663 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT |
1664 | && TYPE_CODE (type) != TYPE_CODE_UNION) | |
c906108c | 1665 | { |
2f408ecb PA |
1666 | std::string type_name = type_to_string (type); |
1667 | error (_("Type %s is not a structure or union type."), | |
1668 | type_name.c_str ()); | |
c906108c SS |
1669 | } |
1670 | ||
c906108c SS |
1671 | for (i = TYPE_NFIELDS (type) - 1; i >= TYPE_N_BASECLASSES (type); i--) |
1672 | { | |
0d5cff50 | 1673 | const char *t_field_name = TYPE_FIELD_NAME (type, i); |
c906108c | 1674 | |
db577aea | 1675 | if (t_field_name && (strcmp_iw (t_field_name, name) == 0)) |
c906108c | 1676 | { |
ef0bd204 | 1677 | return {&TYPE_FIELD (type, i), TYPE_FIELD_BITPOS (type, i)}; |
c906108c | 1678 | } |
f5a010c0 PM |
1679 | else if (!t_field_name || *t_field_name == '\0') |
1680 | { | |
ef0bd204 JB |
1681 | struct_elt elt |
1682 | = lookup_struct_elt (TYPE_FIELD_TYPE (type, i), name, 1); | |
1683 | if (elt.field != NULL) | |
1684 | { | |
1685 | elt.offset += TYPE_FIELD_BITPOS (type, i); | |
1686 | return elt; | |
1687 | } | |
f5a010c0 | 1688 | } |
c906108c SS |
1689 | } |
1690 | ||
1691 | /* OK, it's not in this class. Recursively check the baseclasses. */ | |
1692 | for (i = TYPE_N_BASECLASSES (type) - 1; i >= 0; i--) | |
1693 | { | |
ef0bd204 JB |
1694 | struct_elt elt = lookup_struct_elt (TYPE_BASECLASS (type, i), name, 1); |
1695 | if (elt.field != NULL) | |
1696 | return elt; | |
c906108c SS |
1697 | } |
1698 | ||
1699 | if (noerr) | |
ef0bd204 | 1700 | return {nullptr, 0}; |
c5aa993b | 1701 | |
2f408ecb PA |
1702 | std::string type_name = type_to_string (type); |
1703 | error (_("Type %s has no component named %s."), type_name.c_str (), name); | |
c906108c SS |
1704 | } |
1705 | ||
ef0bd204 JB |
1706 | /* See gdbtypes.h. */ |
1707 | ||
1708 | struct type * | |
1709 | lookup_struct_elt_type (struct type *type, const char *name, int noerr) | |
1710 | { | |
1711 | struct_elt elt = lookup_struct_elt (type, name, noerr); | |
1712 | if (elt.field != NULL) | |
1713 | return FIELD_TYPE (*elt.field); | |
1714 | else | |
1715 | return NULL; | |
1716 | } | |
1717 | ||
ed3ef339 DE |
1718 | /* Store in *MAX the largest number representable by unsigned integer type |
1719 | TYPE. */ | |
1720 | ||
1721 | void | |
1722 | get_unsigned_type_max (struct type *type, ULONGEST *max) | |
1723 | { | |
1724 | unsigned int n; | |
1725 | ||
f168693b | 1726 | type = check_typedef (type); |
ed3ef339 DE |
1727 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_INT && TYPE_UNSIGNED (type)); |
1728 | gdb_assert (TYPE_LENGTH (type) <= sizeof (ULONGEST)); | |
1729 | ||
1730 | /* Written this way to avoid overflow. */ | |
1731 | n = TYPE_LENGTH (type) * TARGET_CHAR_BIT; | |
1732 | *max = ((((ULONGEST) 1 << (n - 1)) - 1) << 1) | 1; | |
1733 | } | |
1734 | ||
1735 | /* Store in *MIN, *MAX the smallest and largest numbers representable by | |
1736 | signed integer type TYPE. */ | |
1737 | ||
1738 | void | |
1739 | get_signed_type_minmax (struct type *type, LONGEST *min, LONGEST *max) | |
1740 | { | |
1741 | unsigned int n; | |
1742 | ||
f168693b | 1743 | type = check_typedef (type); |
ed3ef339 DE |
1744 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_INT && !TYPE_UNSIGNED (type)); |
1745 | gdb_assert (TYPE_LENGTH (type) <= sizeof (LONGEST)); | |
1746 | ||
1747 | n = TYPE_LENGTH (type) * TARGET_CHAR_BIT; | |
1748 | *min = -((ULONGEST) 1 << (n - 1)); | |
1749 | *max = ((ULONGEST) 1 << (n - 1)) - 1; | |
1750 | } | |
1751 | ||
ae6ae975 DE |
1752 | /* Internal routine called by TYPE_VPTR_FIELDNO to return the value of |
1753 | cplus_stuff.vptr_fieldno. | |
1754 | ||
1755 | cplus_stuff is initialized to cplus_struct_default which does not | |
1756 | set vptr_fieldno to -1 for portability reasons (IWBN to use C99 | |
1757 | designated initializers). We cope with that here. */ | |
1758 | ||
1759 | int | |
1760 | internal_type_vptr_fieldno (struct type *type) | |
1761 | { | |
f168693b | 1762 | type = check_typedef (type); |
ae6ae975 DE |
1763 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_STRUCT |
1764 | || TYPE_CODE (type) == TYPE_CODE_UNION); | |
1765 | if (!HAVE_CPLUS_STRUCT (type)) | |
1766 | return -1; | |
1767 | return TYPE_RAW_CPLUS_SPECIFIC (type)->vptr_fieldno; | |
1768 | } | |
1769 | ||
1770 | /* Set the value of cplus_stuff.vptr_fieldno. */ | |
1771 | ||
1772 | void | |
1773 | set_type_vptr_fieldno (struct type *type, int fieldno) | |
1774 | { | |
f168693b | 1775 | type = check_typedef (type); |
ae6ae975 DE |
1776 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_STRUCT |
1777 | || TYPE_CODE (type) == TYPE_CODE_UNION); | |
1778 | if (!HAVE_CPLUS_STRUCT (type)) | |
1779 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
1780 | TYPE_RAW_CPLUS_SPECIFIC (type)->vptr_fieldno = fieldno; | |
1781 | } | |
1782 | ||
1783 | /* Internal routine called by TYPE_VPTR_BASETYPE to return the value of | |
1784 | cplus_stuff.vptr_basetype. */ | |
1785 | ||
1786 | struct type * | |
1787 | internal_type_vptr_basetype (struct type *type) | |
1788 | { | |
f168693b | 1789 | type = check_typedef (type); |
ae6ae975 DE |
1790 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_STRUCT |
1791 | || TYPE_CODE (type) == TYPE_CODE_UNION); | |
1792 | gdb_assert (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_CPLUS_STUFF); | |
1793 | return TYPE_RAW_CPLUS_SPECIFIC (type)->vptr_basetype; | |
1794 | } | |
1795 | ||
1796 | /* Set the value of cplus_stuff.vptr_basetype. */ | |
1797 | ||
1798 | void | |
1799 | set_type_vptr_basetype (struct type *type, struct type *basetype) | |
1800 | { | |
f168693b | 1801 | type = check_typedef (type); |
ae6ae975 DE |
1802 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_STRUCT |
1803 | || TYPE_CODE (type) == TYPE_CODE_UNION); | |
1804 | if (!HAVE_CPLUS_STRUCT (type)) | |
1805 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
1806 | TYPE_RAW_CPLUS_SPECIFIC (type)->vptr_basetype = basetype; | |
1807 | } | |
1808 | ||
81fe8080 DE |
1809 | /* Lookup the vptr basetype/fieldno values for TYPE. |
1810 | If found store vptr_basetype in *BASETYPEP if non-NULL, and return | |
1811 | vptr_fieldno. Also, if found and basetype is from the same objfile, | |
1812 | cache the results. | |
1813 | If not found, return -1 and ignore BASETYPEP. | |
1814 | Callers should be aware that in some cases (for example, | |
c906108c | 1815 | the type or one of its baseclasses is a stub type and we are |
d48cc9dd DJ |
1816 | debugging a .o file, or the compiler uses DWARF-2 and is not GCC), |
1817 | this function will not be able to find the | |
7ba81444 | 1818 | virtual function table pointer, and vptr_fieldno will remain -1 and |
81fe8080 | 1819 | vptr_basetype will remain NULL or incomplete. */ |
c906108c | 1820 | |
81fe8080 DE |
1821 | int |
1822 | get_vptr_fieldno (struct type *type, struct type **basetypep) | |
c906108c | 1823 | { |
f168693b | 1824 | type = check_typedef (type); |
c906108c SS |
1825 | |
1826 | if (TYPE_VPTR_FIELDNO (type) < 0) | |
1827 | { | |
1828 | int i; | |
1829 | ||
7ba81444 MS |
1830 | /* We must start at zero in case the first (and only) baseclass |
1831 | is virtual (and hence we cannot share the table pointer). */ | |
c906108c SS |
1832 | for (i = 0; i < TYPE_N_BASECLASSES (type); i++) |
1833 | { | |
81fe8080 DE |
1834 | struct type *baseclass = check_typedef (TYPE_BASECLASS (type, i)); |
1835 | int fieldno; | |
1836 | struct type *basetype; | |
1837 | ||
1838 | fieldno = get_vptr_fieldno (baseclass, &basetype); | |
1839 | if (fieldno >= 0) | |
c906108c | 1840 | { |
81fe8080 | 1841 | /* If the type comes from a different objfile we can't cache |
0963b4bd | 1842 | it, it may have a different lifetime. PR 2384 */ |
5ef73790 | 1843 | if (TYPE_OBJFILE (type) == TYPE_OBJFILE (basetype)) |
81fe8080 | 1844 | { |
ae6ae975 DE |
1845 | set_type_vptr_fieldno (type, fieldno); |
1846 | set_type_vptr_basetype (type, basetype); | |
81fe8080 DE |
1847 | } |
1848 | if (basetypep) | |
1849 | *basetypep = basetype; | |
1850 | return fieldno; | |
c906108c SS |
1851 | } |
1852 | } | |
81fe8080 DE |
1853 | |
1854 | /* Not found. */ | |
1855 | return -1; | |
1856 | } | |
1857 | else | |
1858 | { | |
1859 | if (basetypep) | |
1860 | *basetypep = TYPE_VPTR_BASETYPE (type); | |
1861 | return TYPE_VPTR_FIELDNO (type); | |
c906108c SS |
1862 | } |
1863 | } | |
1864 | ||
44e1a9eb DJ |
1865 | static void |
1866 | stub_noname_complaint (void) | |
1867 | { | |
b98664d3 | 1868 | complaint (_("stub type has NULL name")); |
44e1a9eb DJ |
1869 | } |
1870 | ||
a405673c JB |
1871 | /* Return nonzero if TYPE has a DYN_PROP_BYTE_STRIDE dynamic property |
1872 | attached to it, and that property has a non-constant value. */ | |
1873 | ||
1874 | static int | |
1875 | array_type_has_dynamic_stride (struct type *type) | |
1876 | { | |
1877 | struct dynamic_prop *prop = get_dyn_prop (DYN_PROP_BYTE_STRIDE, type); | |
1878 | ||
1879 | return (prop != NULL && prop->kind != PROP_CONST); | |
1880 | } | |
1881 | ||
d98b7a16 | 1882 | /* Worker for is_dynamic_type. */ |
80180f79 | 1883 | |
d98b7a16 | 1884 | static int |
ee715b5a | 1885 | is_dynamic_type_internal (struct type *type, int top_level) |
80180f79 SA |
1886 | { |
1887 | type = check_typedef (type); | |
1888 | ||
e771e4be PMR |
1889 | /* We only want to recognize references at the outermost level. */ |
1890 | if (top_level && TYPE_CODE (type) == TYPE_CODE_REF) | |
1891 | type = check_typedef (TYPE_TARGET_TYPE (type)); | |
1892 | ||
3cdcd0ce JB |
1893 | /* Types that have a dynamic TYPE_DATA_LOCATION are considered |
1894 | dynamic, even if the type itself is statically defined. | |
1895 | From a user's point of view, this may appear counter-intuitive; | |
1896 | but it makes sense in this context, because the point is to determine | |
1897 | whether any part of the type needs to be resolved before it can | |
1898 | be exploited. */ | |
1899 | if (TYPE_DATA_LOCATION (type) != NULL | |
1900 | && (TYPE_DATA_LOCATION_KIND (type) == PROP_LOCEXPR | |
1901 | || TYPE_DATA_LOCATION_KIND (type) == PROP_LOCLIST)) | |
1902 | return 1; | |
1903 | ||
3f2f83dd KB |
1904 | if (TYPE_ASSOCIATED_PROP (type)) |
1905 | return 1; | |
1906 | ||
1907 | if (TYPE_ALLOCATED_PROP (type)) | |
1908 | return 1; | |
1909 | ||
80180f79 SA |
1910 | switch (TYPE_CODE (type)) |
1911 | { | |
6f8a3220 | 1912 | case TYPE_CODE_RANGE: |
ddb87a81 JB |
1913 | { |
1914 | /* A range type is obviously dynamic if it has at least one | |
1915 | dynamic bound. But also consider the range type to be | |
1916 | dynamic when its subtype is dynamic, even if the bounds | |
1917 | of the range type are static. It allows us to assume that | |
1918 | the subtype of a static range type is also static. */ | |
1919 | return (!has_static_range (TYPE_RANGE_DATA (type)) | |
ee715b5a | 1920 | || is_dynamic_type_internal (TYPE_TARGET_TYPE (type), 0)); |
ddb87a81 | 1921 | } |
6f8a3220 | 1922 | |
80180f79 SA |
1923 | case TYPE_CODE_ARRAY: |
1924 | { | |
80180f79 | 1925 | gdb_assert (TYPE_NFIELDS (type) == 1); |
6f8a3220 | 1926 | |
a405673c | 1927 | /* The array is dynamic if either the bounds are dynamic... */ |
ee715b5a | 1928 | if (is_dynamic_type_internal (TYPE_INDEX_TYPE (type), 0)) |
80180f79 | 1929 | return 1; |
a405673c JB |
1930 | /* ... or the elements it contains have a dynamic contents... */ |
1931 | if (is_dynamic_type_internal (TYPE_TARGET_TYPE (type), 0)) | |
1932 | return 1; | |
1933 | /* ... or if it has a dynamic stride... */ | |
1934 | if (array_type_has_dynamic_stride (type)) | |
1935 | return 1; | |
1936 | return 0; | |
80180f79 | 1937 | } |
012370f6 TT |
1938 | |
1939 | case TYPE_CODE_STRUCT: | |
1940 | case TYPE_CODE_UNION: | |
1941 | { | |
1942 | int i; | |
1943 | ||
1944 | for (i = 0; i < TYPE_NFIELDS (type); ++i) | |
1945 | if (!field_is_static (&TYPE_FIELD (type, i)) | |
ee715b5a | 1946 | && is_dynamic_type_internal (TYPE_FIELD_TYPE (type, i), 0)) |
012370f6 TT |
1947 | return 1; |
1948 | } | |
1949 | break; | |
80180f79 | 1950 | } |
92e2a17f TT |
1951 | |
1952 | return 0; | |
80180f79 SA |
1953 | } |
1954 | ||
d98b7a16 TT |
1955 | /* See gdbtypes.h. */ |
1956 | ||
1957 | int | |
1958 | is_dynamic_type (struct type *type) | |
1959 | { | |
ee715b5a | 1960 | return is_dynamic_type_internal (type, 1); |
d98b7a16 TT |
1961 | } |
1962 | ||
df25ebbd | 1963 | static struct type *resolve_dynamic_type_internal |
ee715b5a | 1964 | (struct type *type, struct property_addr_info *addr_stack, int top_level); |
d98b7a16 | 1965 | |
df25ebbd JB |
1966 | /* Given a dynamic range type (dyn_range_type) and a stack of |
1967 | struct property_addr_info elements, return a static version | |
1968 | of that type. */ | |
d190df30 | 1969 | |
80180f79 | 1970 | static struct type * |
df25ebbd JB |
1971 | resolve_dynamic_range (struct type *dyn_range_type, |
1972 | struct property_addr_info *addr_stack) | |
80180f79 SA |
1973 | { |
1974 | CORE_ADDR value; | |
ddb87a81 | 1975 | struct type *static_range_type, *static_target_type; |
80180f79 | 1976 | const struct dynamic_prop *prop; |
80180f79 SA |
1977 | struct dynamic_prop low_bound, high_bound; |
1978 | ||
6f8a3220 | 1979 | gdb_assert (TYPE_CODE (dyn_range_type) == TYPE_CODE_RANGE); |
80180f79 | 1980 | |
6f8a3220 | 1981 | prop = &TYPE_RANGE_DATA (dyn_range_type)->low; |
63e43d3a | 1982 | if (dwarf2_evaluate_property (prop, NULL, addr_stack, &value)) |
80180f79 SA |
1983 | { |
1984 | low_bound.kind = PROP_CONST; | |
1985 | low_bound.data.const_val = value; | |
1986 | } | |
1987 | else | |
1988 | { | |
1989 | low_bound.kind = PROP_UNDEFINED; | |
1990 | low_bound.data.const_val = 0; | |
1991 | } | |
1992 | ||
6f8a3220 | 1993 | prop = &TYPE_RANGE_DATA (dyn_range_type)->high; |
63e43d3a | 1994 | if (dwarf2_evaluate_property (prop, NULL, addr_stack, &value)) |
80180f79 SA |
1995 | { |
1996 | high_bound.kind = PROP_CONST; | |
1997 | high_bound.data.const_val = value; | |
c451ebe5 | 1998 | |
6f8a3220 | 1999 | if (TYPE_RANGE_DATA (dyn_range_type)->flag_upper_bound_is_count) |
c451ebe5 SA |
2000 | high_bound.data.const_val |
2001 | = low_bound.data.const_val + high_bound.data.const_val - 1; | |
80180f79 SA |
2002 | } |
2003 | else | |
2004 | { | |
2005 | high_bound.kind = PROP_UNDEFINED; | |
2006 | high_bound.data.const_val = 0; | |
2007 | } | |
2008 | ||
ddb87a81 JB |
2009 | static_target_type |
2010 | = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (dyn_range_type), | |
ee715b5a | 2011 | addr_stack, 0); |
6f8a3220 | 2012 | static_range_type = create_range_type (copy_type (dyn_range_type), |
ddb87a81 | 2013 | static_target_type, |
6f8a3220 JB |
2014 | &low_bound, &high_bound); |
2015 | TYPE_RANGE_DATA (static_range_type)->flag_bound_evaluated = 1; | |
2016 | return static_range_type; | |
2017 | } | |
2018 | ||
2019 | /* Resolves dynamic bound values of an array type TYPE to static ones. | |
df25ebbd JB |
2020 | ADDR_STACK is a stack of struct property_addr_info to be used |
2021 | if needed during the dynamic resolution. */ | |
6f8a3220 JB |
2022 | |
2023 | static struct type * | |
df25ebbd JB |
2024 | resolve_dynamic_array (struct type *type, |
2025 | struct property_addr_info *addr_stack) | |
6f8a3220 JB |
2026 | { |
2027 | CORE_ADDR value; | |
2028 | struct type *elt_type; | |
2029 | struct type *range_type; | |
2030 | struct type *ary_dim; | |
3f2f83dd | 2031 | struct dynamic_prop *prop; |
a405673c | 2032 | unsigned int bit_stride = 0; |
6f8a3220 JB |
2033 | |
2034 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_ARRAY); | |
2035 | ||
3f2f83dd KB |
2036 | type = copy_type (type); |
2037 | ||
6f8a3220 JB |
2038 | elt_type = type; |
2039 | range_type = check_typedef (TYPE_INDEX_TYPE (elt_type)); | |
df25ebbd | 2040 | range_type = resolve_dynamic_range (range_type, addr_stack); |
6f8a3220 | 2041 | |
3f2f83dd KB |
2042 | /* Resolve allocated/associated here before creating a new array type, which |
2043 | will update the length of the array accordingly. */ | |
2044 | prop = TYPE_ALLOCATED_PROP (type); | |
2045 | if (prop != NULL && dwarf2_evaluate_property (prop, NULL, addr_stack, &value)) | |
2046 | { | |
2047 | TYPE_DYN_PROP_ADDR (prop) = value; | |
2048 | TYPE_DYN_PROP_KIND (prop) = PROP_CONST; | |
2049 | } | |
2050 | prop = TYPE_ASSOCIATED_PROP (type); | |
2051 | if (prop != NULL && dwarf2_evaluate_property (prop, NULL, addr_stack, &value)) | |
2052 | { | |
2053 | TYPE_DYN_PROP_ADDR (prop) = value; | |
2054 | TYPE_DYN_PROP_KIND (prop) = PROP_CONST; | |
2055 | } | |
2056 | ||
80180f79 SA |
2057 | ary_dim = check_typedef (TYPE_TARGET_TYPE (elt_type)); |
2058 | ||
2059 | if (ary_dim != NULL && TYPE_CODE (ary_dim) == TYPE_CODE_ARRAY) | |
d0d84780 | 2060 | elt_type = resolve_dynamic_array (ary_dim, addr_stack); |
80180f79 SA |
2061 | else |
2062 | elt_type = TYPE_TARGET_TYPE (type); | |
2063 | ||
a405673c JB |
2064 | prop = get_dyn_prop (DYN_PROP_BYTE_STRIDE, type); |
2065 | if (prop != NULL) | |
2066 | { | |
2067 | int prop_eval_ok | |
2068 | = dwarf2_evaluate_property (prop, NULL, addr_stack, &value); | |
2069 | ||
2070 | if (prop_eval_ok) | |
2071 | { | |
2072 | remove_dyn_prop (DYN_PROP_BYTE_STRIDE, type); | |
2073 | bit_stride = (unsigned int) (value * 8); | |
2074 | } | |
2075 | else | |
2076 | { | |
2077 | /* Could be a bug in our code, but it could also happen | |
2078 | if the DWARF info is not correct. Issue a warning, | |
2079 | and assume no byte/bit stride (leave bit_stride = 0). */ | |
2080 | warning (_("cannot determine array stride for type %s"), | |
2081 | TYPE_NAME (type) ? TYPE_NAME (type) : "<no name>"); | |
2082 | } | |
2083 | } | |
2084 | else | |
2085 | bit_stride = TYPE_FIELD_BITSIZE (type, 0); | |
2086 | ||
2087 | return create_array_type_with_stride (type, elt_type, range_type, NULL, | |
2088 | bit_stride); | |
80180f79 SA |
2089 | } |
2090 | ||
012370f6 | 2091 | /* Resolve dynamic bounds of members of the union TYPE to static |
df25ebbd JB |
2092 | bounds. ADDR_STACK is a stack of struct property_addr_info |
2093 | to be used if needed during the dynamic resolution. */ | |
012370f6 TT |
2094 | |
2095 | static struct type * | |
df25ebbd JB |
2096 | resolve_dynamic_union (struct type *type, |
2097 | struct property_addr_info *addr_stack) | |
012370f6 TT |
2098 | { |
2099 | struct type *resolved_type; | |
2100 | int i; | |
2101 | unsigned int max_len = 0; | |
2102 | ||
2103 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_UNION); | |
2104 | ||
2105 | resolved_type = copy_type (type); | |
2106 | TYPE_FIELDS (resolved_type) | |
224c3ddb SM |
2107 | = (struct field *) TYPE_ALLOC (resolved_type, |
2108 | TYPE_NFIELDS (resolved_type) | |
2109 | * sizeof (struct field)); | |
012370f6 TT |
2110 | memcpy (TYPE_FIELDS (resolved_type), |
2111 | TYPE_FIELDS (type), | |
2112 | TYPE_NFIELDS (resolved_type) * sizeof (struct field)); | |
2113 | for (i = 0; i < TYPE_NFIELDS (resolved_type); ++i) | |
2114 | { | |
2115 | struct type *t; | |
2116 | ||
2117 | if (field_is_static (&TYPE_FIELD (type, i))) | |
2118 | continue; | |
2119 | ||
d98b7a16 | 2120 | t = resolve_dynamic_type_internal (TYPE_FIELD_TYPE (resolved_type, i), |
ee715b5a | 2121 | addr_stack, 0); |
012370f6 TT |
2122 | TYPE_FIELD_TYPE (resolved_type, i) = t; |
2123 | if (TYPE_LENGTH (t) > max_len) | |
2124 | max_len = TYPE_LENGTH (t); | |
2125 | } | |
2126 | ||
2127 | TYPE_LENGTH (resolved_type) = max_len; | |
2128 | return resolved_type; | |
2129 | } | |
2130 | ||
2131 | /* Resolve dynamic bounds of members of the struct TYPE to static | |
df25ebbd JB |
2132 | bounds. ADDR_STACK is a stack of struct property_addr_info to |
2133 | be used if needed during the dynamic resolution. */ | |
012370f6 TT |
2134 | |
2135 | static struct type * | |
df25ebbd JB |
2136 | resolve_dynamic_struct (struct type *type, |
2137 | struct property_addr_info *addr_stack) | |
012370f6 TT |
2138 | { |
2139 | struct type *resolved_type; | |
2140 | int i; | |
6908c509 | 2141 | unsigned resolved_type_bit_length = 0; |
012370f6 TT |
2142 | |
2143 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_STRUCT); | |
2144 | gdb_assert (TYPE_NFIELDS (type) > 0); | |
2145 | ||
2146 | resolved_type = copy_type (type); | |
2147 | TYPE_FIELDS (resolved_type) | |
224c3ddb SM |
2148 | = (struct field *) TYPE_ALLOC (resolved_type, |
2149 | TYPE_NFIELDS (resolved_type) | |
2150 | * sizeof (struct field)); | |
012370f6 TT |
2151 | memcpy (TYPE_FIELDS (resolved_type), |
2152 | TYPE_FIELDS (type), | |
2153 | TYPE_NFIELDS (resolved_type) * sizeof (struct field)); | |
2154 | for (i = 0; i < TYPE_NFIELDS (resolved_type); ++i) | |
2155 | { | |
6908c509 | 2156 | unsigned new_bit_length; |
df25ebbd | 2157 | struct property_addr_info pinfo; |
012370f6 TT |
2158 | |
2159 | if (field_is_static (&TYPE_FIELD (type, i))) | |
2160 | continue; | |
2161 | ||
6908c509 JB |
2162 | /* As we know this field is not a static field, the field's |
2163 | field_loc_kind should be FIELD_LOC_KIND_BITPOS. Verify | |
2164 | this is the case, but only trigger a simple error rather | |
2165 | than an internal error if that fails. While failing | |
2166 | that verification indicates a bug in our code, the error | |
2167 | is not severe enough to suggest to the user he stops | |
2168 | his debugging session because of it. */ | |
df25ebbd | 2169 | if (TYPE_FIELD_LOC_KIND (type, i) != FIELD_LOC_KIND_BITPOS) |
6908c509 JB |
2170 | error (_("Cannot determine struct field location" |
2171 | " (invalid location kind)")); | |
df25ebbd JB |
2172 | |
2173 | pinfo.type = check_typedef (TYPE_FIELD_TYPE (type, i)); | |
c3345124 | 2174 | pinfo.valaddr = addr_stack->valaddr; |
9920b434 BH |
2175 | pinfo.addr |
2176 | = (addr_stack->addr | |
2177 | + (TYPE_FIELD_BITPOS (resolved_type, i) / TARGET_CHAR_BIT)); | |
df25ebbd JB |
2178 | pinfo.next = addr_stack; |
2179 | ||
2180 | TYPE_FIELD_TYPE (resolved_type, i) | |
2181 | = resolve_dynamic_type_internal (TYPE_FIELD_TYPE (resolved_type, i), | |
ee715b5a | 2182 | &pinfo, 0); |
df25ebbd JB |
2183 | gdb_assert (TYPE_FIELD_LOC_KIND (resolved_type, i) |
2184 | == FIELD_LOC_KIND_BITPOS); | |
2185 | ||
6908c509 JB |
2186 | new_bit_length = TYPE_FIELD_BITPOS (resolved_type, i); |
2187 | if (TYPE_FIELD_BITSIZE (resolved_type, i) != 0) | |
2188 | new_bit_length += TYPE_FIELD_BITSIZE (resolved_type, i); | |
2189 | else | |
2190 | new_bit_length += (TYPE_LENGTH (TYPE_FIELD_TYPE (resolved_type, i)) | |
2191 | * TARGET_CHAR_BIT); | |
2192 | ||
2193 | /* Normally, we would use the position and size of the last field | |
2194 | to determine the size of the enclosing structure. But GCC seems | |
2195 | to be encoding the position of some fields incorrectly when | |
2196 | the struct contains a dynamic field that is not placed last. | |
2197 | So we compute the struct size based on the field that has | |
2198 | the highest position + size - probably the best we can do. */ | |
2199 | if (new_bit_length > resolved_type_bit_length) | |
2200 | resolved_type_bit_length = new_bit_length; | |
012370f6 TT |
2201 | } |
2202 | ||
9920b434 BH |
2203 | /* The length of a type won't change for fortran, but it does for C and Ada. |
2204 | For fortran the size of dynamic fields might change over time but not the | |
2205 | type length of the structure. If we adapt it, we run into problems | |
2206 | when calculating the element offset for arrays of structs. */ | |
2207 | if (current_language->la_language != language_fortran) | |
2208 | TYPE_LENGTH (resolved_type) | |
2209 | = (resolved_type_bit_length + TARGET_CHAR_BIT - 1) / TARGET_CHAR_BIT; | |
6908c509 | 2210 | |
9e195661 PMR |
2211 | /* The Ada language uses this field as a cache for static fixed types: reset |
2212 | it as RESOLVED_TYPE must have its own static fixed type. */ | |
2213 | TYPE_TARGET_TYPE (resolved_type) = NULL; | |
2214 | ||
012370f6 TT |
2215 | return resolved_type; |
2216 | } | |
2217 | ||
d98b7a16 | 2218 | /* Worker for resolved_dynamic_type. */ |
80180f79 | 2219 | |
d98b7a16 | 2220 | static struct type * |
df25ebbd | 2221 | resolve_dynamic_type_internal (struct type *type, |
ee715b5a PMR |
2222 | struct property_addr_info *addr_stack, |
2223 | int top_level) | |
80180f79 SA |
2224 | { |
2225 | struct type *real_type = check_typedef (type); | |
6f8a3220 | 2226 | struct type *resolved_type = type; |
d9823cbb | 2227 | struct dynamic_prop *prop; |
3cdcd0ce | 2228 | CORE_ADDR value; |
80180f79 | 2229 | |
ee715b5a | 2230 | if (!is_dynamic_type_internal (real_type, top_level)) |
80180f79 SA |
2231 | return type; |
2232 | ||
5537b577 | 2233 | if (TYPE_CODE (type) == TYPE_CODE_TYPEDEF) |
6f8a3220 | 2234 | { |
cac9b138 JK |
2235 | resolved_type = copy_type (type); |
2236 | TYPE_TARGET_TYPE (resolved_type) | |
ee715b5a PMR |
2237 | = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (type), addr_stack, |
2238 | top_level); | |
5537b577 JK |
2239 | } |
2240 | else | |
2241 | { | |
2242 | /* Before trying to resolve TYPE, make sure it is not a stub. */ | |
2243 | type = real_type; | |
012370f6 | 2244 | |
5537b577 JK |
2245 | switch (TYPE_CODE (type)) |
2246 | { | |
e771e4be PMR |
2247 | case TYPE_CODE_REF: |
2248 | { | |
2249 | struct property_addr_info pinfo; | |
2250 | ||
2251 | pinfo.type = check_typedef (TYPE_TARGET_TYPE (type)); | |
c3345124 JB |
2252 | pinfo.valaddr = NULL; |
2253 | if (addr_stack->valaddr != NULL) | |
2254 | pinfo.addr = extract_typed_address (addr_stack->valaddr, type); | |
2255 | else | |
2256 | pinfo.addr = read_memory_typed_address (addr_stack->addr, type); | |
e771e4be PMR |
2257 | pinfo.next = addr_stack; |
2258 | ||
2259 | resolved_type = copy_type (type); | |
2260 | TYPE_TARGET_TYPE (resolved_type) | |
2261 | = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (type), | |
2262 | &pinfo, top_level); | |
2263 | break; | |
2264 | } | |
2265 | ||
5537b577 | 2266 | case TYPE_CODE_ARRAY: |
df25ebbd | 2267 | resolved_type = resolve_dynamic_array (type, addr_stack); |
5537b577 JK |
2268 | break; |
2269 | ||
2270 | case TYPE_CODE_RANGE: | |
df25ebbd | 2271 | resolved_type = resolve_dynamic_range (type, addr_stack); |
5537b577 JK |
2272 | break; |
2273 | ||
2274 | case TYPE_CODE_UNION: | |
df25ebbd | 2275 | resolved_type = resolve_dynamic_union (type, addr_stack); |
5537b577 JK |
2276 | break; |
2277 | ||
2278 | case TYPE_CODE_STRUCT: | |
df25ebbd | 2279 | resolved_type = resolve_dynamic_struct (type, addr_stack); |
5537b577 JK |
2280 | break; |
2281 | } | |
6f8a3220 | 2282 | } |
80180f79 | 2283 | |
3cdcd0ce JB |
2284 | /* Resolve data_location attribute. */ |
2285 | prop = TYPE_DATA_LOCATION (resolved_type); | |
63e43d3a PMR |
2286 | if (prop != NULL |
2287 | && dwarf2_evaluate_property (prop, NULL, addr_stack, &value)) | |
3cdcd0ce | 2288 | { |
d9823cbb KB |
2289 | TYPE_DYN_PROP_ADDR (prop) = value; |
2290 | TYPE_DYN_PROP_KIND (prop) = PROP_CONST; | |
3cdcd0ce | 2291 | } |
3cdcd0ce | 2292 | |
80180f79 SA |
2293 | return resolved_type; |
2294 | } | |
2295 | ||
d98b7a16 TT |
2296 | /* See gdbtypes.h */ |
2297 | ||
2298 | struct type * | |
c3345124 JB |
2299 | resolve_dynamic_type (struct type *type, const gdb_byte *valaddr, |
2300 | CORE_ADDR addr) | |
d98b7a16 | 2301 | { |
c3345124 JB |
2302 | struct property_addr_info pinfo |
2303 | = {check_typedef (type), valaddr, addr, NULL}; | |
df25ebbd | 2304 | |
ee715b5a | 2305 | return resolve_dynamic_type_internal (type, &pinfo, 1); |
d98b7a16 TT |
2306 | } |
2307 | ||
d9823cbb KB |
2308 | /* See gdbtypes.h */ |
2309 | ||
2310 | struct dynamic_prop * | |
2311 | get_dyn_prop (enum dynamic_prop_node_kind prop_kind, const struct type *type) | |
2312 | { | |
2313 | struct dynamic_prop_list *node = TYPE_DYN_PROP_LIST (type); | |
2314 | ||
2315 | while (node != NULL) | |
2316 | { | |
2317 | if (node->prop_kind == prop_kind) | |
283a9958 | 2318 | return &node->prop; |
d9823cbb KB |
2319 | node = node->next; |
2320 | } | |
2321 | return NULL; | |
2322 | } | |
2323 | ||
2324 | /* See gdbtypes.h */ | |
2325 | ||
2326 | void | |
2327 | add_dyn_prop (enum dynamic_prop_node_kind prop_kind, struct dynamic_prop prop, | |
50a82047 | 2328 | struct type *type) |
d9823cbb KB |
2329 | { |
2330 | struct dynamic_prop_list *temp; | |
2331 | ||
2332 | gdb_assert (TYPE_OBJFILE_OWNED (type)); | |
2333 | ||
50a82047 TT |
2334 | temp = XOBNEW (&TYPE_OBJFILE (type)->objfile_obstack, |
2335 | struct dynamic_prop_list); | |
d9823cbb | 2336 | temp->prop_kind = prop_kind; |
283a9958 | 2337 | temp->prop = prop; |
d9823cbb KB |
2338 | temp->next = TYPE_DYN_PROP_LIST (type); |
2339 | ||
2340 | TYPE_DYN_PROP_LIST (type) = temp; | |
2341 | } | |
2342 | ||
9920b434 BH |
2343 | /* Remove dynamic property from TYPE in case it exists. */ |
2344 | ||
2345 | void | |
2346 | remove_dyn_prop (enum dynamic_prop_node_kind prop_kind, | |
2347 | struct type *type) | |
2348 | { | |
2349 | struct dynamic_prop_list *prev_node, *curr_node; | |
2350 | ||
2351 | curr_node = TYPE_DYN_PROP_LIST (type); | |
2352 | prev_node = NULL; | |
2353 | ||
2354 | while (NULL != curr_node) | |
2355 | { | |
2356 | if (curr_node->prop_kind == prop_kind) | |
2357 | { | |
2358 | /* Update the linked list but don't free anything. | |
2359 | The property was allocated on objstack and it is not known | |
2360 | if we are on top of it. Nevertheless, everything is released | |
2361 | when the complete objstack is freed. */ | |
2362 | if (NULL == prev_node) | |
2363 | TYPE_DYN_PROP_LIST (type) = curr_node->next; | |
2364 | else | |
2365 | prev_node->next = curr_node->next; | |
2366 | ||
2367 | return; | |
2368 | } | |
2369 | ||
2370 | prev_node = curr_node; | |
2371 | curr_node = curr_node->next; | |
2372 | } | |
2373 | } | |
d9823cbb | 2374 | |
92163a10 JK |
2375 | /* Find the real type of TYPE. This function returns the real type, |
2376 | after removing all layers of typedefs, and completing opaque or stub | |
2377 | types. Completion changes the TYPE argument, but stripping of | |
2378 | typedefs does not. | |
2379 | ||
2380 | Instance flags (e.g. const/volatile) are preserved as typedefs are | |
2381 | stripped. If necessary a new qualified form of the underlying type | |
2382 | is created. | |
2383 | ||
2384 | NOTE: This will return a typedef if TYPE_TARGET_TYPE for the typedef has | |
2385 | not been computed and we're either in the middle of reading symbols, or | |
2386 | there was no name for the typedef in the debug info. | |
2387 | ||
9bc118a5 DE |
2388 | NOTE: Lookup of opaque types can throw errors for invalid symbol files. |
2389 | QUITs in the symbol reading code can also throw. | |
2390 | Thus this function can throw an exception. | |
2391 | ||
92163a10 JK |
2392 | If TYPE is a TYPE_CODE_TYPEDEF, its length is updated to the length of |
2393 | the target type. | |
c906108c SS |
2394 | |
2395 | If this is a stubbed struct (i.e. declared as struct foo *), see if | |
0963b4bd | 2396 | we can find a full definition in some other file. If so, copy this |
7ba81444 MS |
2397 | definition, so we can use it in future. There used to be a comment |
2398 | (but not any code) that if we don't find a full definition, we'd | |
2399 | set a flag so we don't spend time in the future checking the same | |
2400 | type. That would be a mistake, though--we might load in more | |
92163a10 | 2401 | symbols which contain a full definition for the type. */ |
c906108c SS |
2402 | |
2403 | struct type * | |
a02fd225 | 2404 | check_typedef (struct type *type) |
c906108c SS |
2405 | { |
2406 | struct type *orig_type = type; | |
92163a10 JK |
2407 | /* While we're removing typedefs, we don't want to lose qualifiers. |
2408 | E.g., const/volatile. */ | |
2409 | int instance_flags = TYPE_INSTANCE_FLAGS (type); | |
a02fd225 | 2410 | |
423c0af8 MS |
2411 | gdb_assert (type); |
2412 | ||
c906108c SS |
2413 | while (TYPE_CODE (type) == TYPE_CODE_TYPEDEF) |
2414 | { | |
2415 | if (!TYPE_TARGET_TYPE (type)) | |
2416 | { | |
0d5cff50 | 2417 | const char *name; |
c906108c SS |
2418 | struct symbol *sym; |
2419 | ||
2420 | /* It is dangerous to call lookup_symbol if we are currently | |
7ba81444 | 2421 | reading a symtab. Infinite recursion is one danger. */ |
c906108c | 2422 | if (currently_reading_symtab) |
92163a10 | 2423 | return make_qualified_type (type, instance_flags, NULL); |
c906108c | 2424 | |
a737d952 | 2425 | name = TYPE_NAME (type); |
e86ca25f TT |
2426 | /* FIXME: shouldn't we look in STRUCT_DOMAIN and/or |
2427 | VAR_DOMAIN as appropriate? */ | |
c906108c SS |
2428 | if (name == NULL) |
2429 | { | |
23136709 | 2430 | stub_noname_complaint (); |
92163a10 | 2431 | return make_qualified_type (type, instance_flags, NULL); |
c906108c | 2432 | } |
d12307c1 | 2433 | sym = lookup_symbol (name, 0, STRUCT_DOMAIN, 0).symbol; |
c906108c SS |
2434 | if (sym) |
2435 | TYPE_TARGET_TYPE (type) = SYMBOL_TYPE (sym); | |
7ba81444 | 2436 | else /* TYPE_CODE_UNDEF */ |
e9bb382b | 2437 | TYPE_TARGET_TYPE (type) = alloc_type_arch (get_type_arch (type)); |
c906108c SS |
2438 | } |
2439 | type = TYPE_TARGET_TYPE (type); | |
c906108c | 2440 | |
92163a10 JK |
2441 | /* Preserve the instance flags as we traverse down the typedef chain. |
2442 | ||
2443 | Handling address spaces/classes is nasty, what do we do if there's a | |
2444 | conflict? | |
2445 | E.g., what if an outer typedef marks the type as class_1 and an inner | |
2446 | typedef marks the type as class_2? | |
2447 | This is the wrong place to do such error checking. We leave it to | |
2448 | the code that created the typedef in the first place to flag the | |
2449 | error. We just pick the outer address space (akin to letting the | |
2450 | outer cast in a chain of casting win), instead of assuming | |
2451 | "it can't happen". */ | |
2452 | { | |
2453 | const int ALL_SPACES = (TYPE_INSTANCE_FLAG_CODE_SPACE | |
2454 | | TYPE_INSTANCE_FLAG_DATA_SPACE); | |
2455 | const int ALL_CLASSES = TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL; | |
2456 | int new_instance_flags = TYPE_INSTANCE_FLAGS (type); | |
2457 | ||
2458 | /* Treat code vs data spaces and address classes separately. */ | |
2459 | if ((instance_flags & ALL_SPACES) != 0) | |
2460 | new_instance_flags &= ~ALL_SPACES; | |
2461 | if ((instance_flags & ALL_CLASSES) != 0) | |
2462 | new_instance_flags &= ~ALL_CLASSES; | |
2463 | ||
2464 | instance_flags |= new_instance_flags; | |
2465 | } | |
2466 | } | |
a02fd225 | 2467 | |
7ba81444 MS |
2468 | /* If this is a struct/class/union with no fields, then check |
2469 | whether a full definition exists somewhere else. This is for | |
2470 | systems where a type definition with no fields is issued for such | |
2471 | types, instead of identifying them as stub types in the first | |
2472 | place. */ | |
c5aa993b | 2473 | |
7ba81444 MS |
2474 | if (TYPE_IS_OPAQUE (type) |
2475 | && opaque_type_resolution | |
2476 | && !currently_reading_symtab) | |
c906108c | 2477 | { |
a737d952 | 2478 | const char *name = TYPE_NAME (type); |
c5aa993b | 2479 | struct type *newtype; |
d8734c88 | 2480 | |
c906108c SS |
2481 | if (name == NULL) |
2482 | { | |
23136709 | 2483 | stub_noname_complaint (); |
92163a10 | 2484 | return make_qualified_type (type, instance_flags, NULL); |
c906108c SS |
2485 | } |
2486 | newtype = lookup_transparent_type (name); | |
ad766c0a | 2487 | |
c906108c | 2488 | if (newtype) |
ad766c0a | 2489 | { |
7ba81444 MS |
2490 | /* If the resolved type and the stub are in the same |
2491 | objfile, then replace the stub type with the real deal. | |
2492 | But if they're in separate objfiles, leave the stub | |
2493 | alone; we'll just look up the transparent type every time | |
2494 | we call check_typedef. We can't create pointers between | |
2495 | types allocated to different objfiles, since they may | |
2496 | have different lifetimes. Trying to copy NEWTYPE over to | |
2497 | TYPE's objfile is pointless, too, since you'll have to | |
2498 | move over any other types NEWTYPE refers to, which could | |
2499 | be an unbounded amount of stuff. */ | |
ad766c0a | 2500 | if (TYPE_OBJFILE (newtype) == TYPE_OBJFILE (type)) |
92163a10 JK |
2501 | type = make_qualified_type (newtype, |
2502 | TYPE_INSTANCE_FLAGS (type), | |
2503 | type); | |
ad766c0a JB |
2504 | else |
2505 | type = newtype; | |
2506 | } | |
c906108c | 2507 | } |
7ba81444 MS |
2508 | /* Otherwise, rely on the stub flag being set for opaque/stubbed |
2509 | types. */ | |
74a9bb82 | 2510 | else if (TYPE_STUB (type) && !currently_reading_symtab) |
c906108c | 2511 | { |
a737d952 | 2512 | const char *name = TYPE_NAME (type); |
e86ca25f TT |
2513 | /* FIXME: shouldn't we look in STRUCT_DOMAIN and/or VAR_DOMAIN |
2514 | as appropriate? */ | |
c906108c | 2515 | struct symbol *sym; |
d8734c88 | 2516 | |
c906108c SS |
2517 | if (name == NULL) |
2518 | { | |
23136709 | 2519 | stub_noname_complaint (); |
92163a10 | 2520 | return make_qualified_type (type, instance_flags, NULL); |
c906108c | 2521 | } |
d12307c1 | 2522 | sym = lookup_symbol (name, 0, STRUCT_DOMAIN, 0).symbol; |
c906108c | 2523 | if (sym) |
c26f2453 JB |
2524 | { |
2525 | /* Same as above for opaque types, we can replace the stub | |
92163a10 | 2526 | with the complete type only if they are in the same |
c26f2453 JB |
2527 | objfile. */ |
2528 | if (TYPE_OBJFILE (SYMBOL_TYPE(sym)) == TYPE_OBJFILE (type)) | |
92163a10 JK |
2529 | type = make_qualified_type (SYMBOL_TYPE (sym), |
2530 | TYPE_INSTANCE_FLAGS (type), | |
2531 | type); | |
c26f2453 JB |
2532 | else |
2533 | type = SYMBOL_TYPE (sym); | |
2534 | } | |
c906108c SS |
2535 | } |
2536 | ||
74a9bb82 | 2537 | if (TYPE_TARGET_STUB (type)) |
c906108c | 2538 | { |
c906108c SS |
2539 | struct type *target_type = check_typedef (TYPE_TARGET_TYPE (type)); |
2540 | ||
74a9bb82 | 2541 | if (TYPE_STUB (target_type) || TYPE_TARGET_STUB (target_type)) |
c5aa993b | 2542 | { |
73e2eb35 | 2543 | /* Nothing we can do. */ |
c5aa993b | 2544 | } |
c906108c SS |
2545 | else if (TYPE_CODE (type) == TYPE_CODE_RANGE) |
2546 | { | |
2547 | TYPE_LENGTH (type) = TYPE_LENGTH (target_type); | |
876cecd0 | 2548 | TYPE_TARGET_STUB (type) = 0; |
c906108c SS |
2549 | } |
2550 | } | |
92163a10 JK |
2551 | |
2552 | type = make_qualified_type (type, instance_flags, NULL); | |
2553 | ||
7ba81444 | 2554 | /* Cache TYPE_LENGTH for future use. */ |
c906108c | 2555 | TYPE_LENGTH (orig_type) = TYPE_LENGTH (type); |
92163a10 | 2556 | |
c906108c SS |
2557 | return type; |
2558 | } | |
2559 | ||
7ba81444 | 2560 | /* Parse a type expression in the string [P..P+LENGTH). If an error |
48319d1f | 2561 | occurs, silently return a void type. */ |
c91ecb25 | 2562 | |
b9362cc7 | 2563 | static struct type * |
48319d1f | 2564 | safe_parse_type (struct gdbarch *gdbarch, char *p, int length) |
c91ecb25 ND |
2565 | { |
2566 | struct ui_file *saved_gdb_stderr; | |
34365054 | 2567 | struct type *type = NULL; /* Initialize to keep gcc happy. */ |
c91ecb25 | 2568 | |
7ba81444 | 2569 | /* Suppress error messages. */ |
c91ecb25 | 2570 | saved_gdb_stderr = gdb_stderr; |
d7e74731 | 2571 | gdb_stderr = &null_stream; |
c91ecb25 | 2572 | |
7ba81444 | 2573 | /* Call parse_and_eval_type() without fear of longjmp()s. */ |
a70b8144 | 2574 | try |
8e7b59a5 KS |
2575 | { |
2576 | type = parse_and_eval_type (p, length); | |
2577 | } | |
230d2906 | 2578 | catch (const gdb_exception_error &except) |
492d29ea PA |
2579 | { |
2580 | type = builtin_type (gdbarch)->builtin_void; | |
2581 | } | |
c91ecb25 | 2582 | |
7ba81444 | 2583 | /* Stop suppressing error messages. */ |
c91ecb25 ND |
2584 | gdb_stderr = saved_gdb_stderr; |
2585 | ||
2586 | return type; | |
2587 | } | |
2588 | ||
c906108c SS |
2589 | /* Ugly hack to convert method stubs into method types. |
2590 | ||
7ba81444 MS |
2591 | He ain't kiddin'. This demangles the name of the method into a |
2592 | string including argument types, parses out each argument type, | |
2593 | generates a string casting a zero to that type, evaluates the | |
2594 | string, and stuffs the resulting type into an argtype vector!!! | |
2595 | Then it knows the type of the whole function (including argument | |
2596 | types for overloading), which info used to be in the stab's but was | |
2597 | removed to hack back the space required for them. */ | |
c906108c | 2598 | |
de17c821 | 2599 | static void |
fba45db2 | 2600 | check_stub_method (struct type *type, int method_id, int signature_id) |
c906108c | 2601 | { |
50810684 | 2602 | struct gdbarch *gdbarch = get_type_arch (type); |
c906108c SS |
2603 | struct fn_field *f; |
2604 | char *mangled_name = gdb_mangle_name (type, method_id, signature_id); | |
8de20a37 TT |
2605 | char *demangled_name = gdb_demangle (mangled_name, |
2606 | DMGL_PARAMS | DMGL_ANSI); | |
c906108c SS |
2607 | char *argtypetext, *p; |
2608 | int depth = 0, argcount = 1; | |
ad2f7632 | 2609 | struct field *argtypes; |
c906108c SS |
2610 | struct type *mtype; |
2611 | ||
2612 | /* Make sure we got back a function string that we can use. */ | |
2613 | if (demangled_name) | |
2614 | p = strchr (demangled_name, '('); | |
502dcf4e AC |
2615 | else |
2616 | p = NULL; | |
c906108c SS |
2617 | |
2618 | if (demangled_name == NULL || p == NULL) | |
7ba81444 MS |
2619 | error (_("Internal: Cannot demangle mangled name `%s'."), |
2620 | mangled_name); | |
c906108c SS |
2621 | |
2622 | /* Now, read in the parameters that define this type. */ | |
2623 | p += 1; | |
2624 | argtypetext = p; | |
2625 | while (*p) | |
2626 | { | |
070ad9f0 | 2627 | if (*p == '(' || *p == '<') |
c906108c SS |
2628 | { |
2629 | depth += 1; | |
2630 | } | |
070ad9f0 | 2631 | else if (*p == ')' || *p == '>') |
c906108c SS |
2632 | { |
2633 | depth -= 1; | |
2634 | } | |
2635 | else if (*p == ',' && depth == 0) | |
2636 | { | |
2637 | argcount += 1; | |
2638 | } | |
2639 | ||
2640 | p += 1; | |
2641 | } | |
2642 | ||
ad2f7632 | 2643 | /* If we read one argument and it was ``void'', don't count it. */ |
61012eef | 2644 | if (startswith (argtypetext, "(void)")) |
ad2f7632 | 2645 | argcount -= 1; |
c906108c | 2646 | |
ad2f7632 DJ |
2647 | /* We need one extra slot, for the THIS pointer. */ |
2648 | ||
2649 | argtypes = (struct field *) | |
2650 | TYPE_ALLOC (type, (argcount + 1) * sizeof (struct field)); | |
c906108c | 2651 | p = argtypetext; |
4a1970e4 DJ |
2652 | |
2653 | /* Add THIS pointer for non-static methods. */ | |
2654 | f = TYPE_FN_FIELDLIST1 (type, method_id); | |
2655 | if (TYPE_FN_FIELD_STATIC_P (f, signature_id)) | |
2656 | argcount = 0; | |
2657 | else | |
2658 | { | |
ad2f7632 | 2659 | argtypes[0].type = lookup_pointer_type (type); |
4a1970e4 DJ |
2660 | argcount = 1; |
2661 | } | |
c906108c | 2662 | |
0963b4bd | 2663 | if (*p != ')') /* () means no args, skip while. */ |
c906108c SS |
2664 | { |
2665 | depth = 0; | |
2666 | while (*p) | |
2667 | { | |
2668 | if (depth <= 0 && (*p == ',' || *p == ')')) | |
2669 | { | |
ad2f7632 DJ |
2670 | /* Avoid parsing of ellipsis, they will be handled below. |
2671 | Also avoid ``void'' as above. */ | |
2672 | if (strncmp (argtypetext, "...", p - argtypetext) != 0 | |
2673 | && strncmp (argtypetext, "void", p - argtypetext) != 0) | |
c906108c | 2674 | { |
ad2f7632 | 2675 | argtypes[argcount].type = |
48319d1f | 2676 | safe_parse_type (gdbarch, argtypetext, p - argtypetext); |
c906108c SS |
2677 | argcount += 1; |
2678 | } | |
2679 | argtypetext = p + 1; | |
2680 | } | |
2681 | ||
070ad9f0 | 2682 | if (*p == '(' || *p == '<') |
c906108c SS |
2683 | { |
2684 | depth += 1; | |
2685 | } | |
070ad9f0 | 2686 | else if (*p == ')' || *p == '>') |
c906108c SS |
2687 | { |
2688 | depth -= 1; | |
2689 | } | |
2690 | ||
2691 | p += 1; | |
2692 | } | |
2693 | } | |
2694 | ||
c906108c SS |
2695 | TYPE_FN_FIELD_PHYSNAME (f, signature_id) = mangled_name; |
2696 | ||
2697 | /* Now update the old "stub" type into a real type. */ | |
2698 | mtype = TYPE_FN_FIELD_TYPE (f, signature_id); | |
09e2d7c7 DE |
2699 | /* MTYPE may currently be a function (TYPE_CODE_FUNC). |
2700 | We want a method (TYPE_CODE_METHOD). */ | |
2701 | smash_to_method_type (mtype, type, TYPE_TARGET_TYPE (mtype), | |
2702 | argtypes, argcount, p[-2] == '.'); | |
876cecd0 | 2703 | TYPE_STUB (mtype) = 0; |
c906108c | 2704 | TYPE_FN_FIELD_STUB (f, signature_id) = 0; |
ad2f7632 DJ |
2705 | |
2706 | xfree (demangled_name); | |
c906108c SS |
2707 | } |
2708 | ||
7ba81444 MS |
2709 | /* This is the external interface to check_stub_method, above. This |
2710 | function unstubs all of the signatures for TYPE's METHOD_ID method | |
2711 | name. After calling this function TYPE_FN_FIELD_STUB will be | |
2712 | cleared for each signature and TYPE_FN_FIELDLIST_NAME will be | |
2713 | correct. | |
de17c821 DJ |
2714 | |
2715 | This function unfortunately can not die until stabs do. */ | |
2716 | ||
2717 | void | |
2718 | check_stub_method_group (struct type *type, int method_id) | |
2719 | { | |
2720 | int len = TYPE_FN_FIELDLIST_LENGTH (type, method_id); | |
2721 | struct fn_field *f = TYPE_FN_FIELDLIST1 (type, method_id); | |
de17c821 | 2722 | |
041be526 SM |
2723 | for (int j = 0; j < len; j++) |
2724 | { | |
2725 | if (TYPE_FN_FIELD_STUB (f, j)) | |
de17c821 | 2726 | check_stub_method (type, method_id, j); |
de17c821 DJ |
2727 | } |
2728 | } | |
2729 | ||
9655fd1a JK |
2730 | /* Ensure it is in .rodata (if available) by workarounding GCC PR 44690. */ |
2731 | const struct cplus_struct_type cplus_struct_default = { }; | |
c906108c SS |
2732 | |
2733 | void | |
fba45db2 | 2734 | allocate_cplus_struct_type (struct type *type) |
c906108c | 2735 | { |
b4ba55a1 JB |
2736 | if (HAVE_CPLUS_STRUCT (type)) |
2737 | /* Structure was already allocated. Nothing more to do. */ | |
2738 | return; | |
2739 | ||
2740 | TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_CPLUS_STUFF; | |
2741 | TYPE_RAW_CPLUS_SPECIFIC (type) = (struct cplus_struct_type *) | |
2742 | TYPE_ALLOC (type, sizeof (struct cplus_struct_type)); | |
2743 | *(TYPE_RAW_CPLUS_SPECIFIC (type)) = cplus_struct_default; | |
ae6ae975 | 2744 | set_type_vptr_fieldno (type, -1); |
c906108c SS |
2745 | } |
2746 | ||
b4ba55a1 JB |
2747 | const struct gnat_aux_type gnat_aux_default = |
2748 | { NULL }; | |
2749 | ||
2750 | /* Set the TYPE's type-specific kind to TYPE_SPECIFIC_GNAT_STUFF, | |
2751 | and allocate the associated gnat-specific data. The gnat-specific | |
2752 | data is also initialized to gnat_aux_default. */ | |
5212577a | 2753 | |
b4ba55a1 JB |
2754 | void |
2755 | allocate_gnat_aux_type (struct type *type) | |
2756 | { | |
2757 | TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_GNAT_STUFF; | |
2758 | TYPE_GNAT_SPECIFIC (type) = (struct gnat_aux_type *) | |
2759 | TYPE_ALLOC (type, sizeof (struct gnat_aux_type)); | |
2760 | *(TYPE_GNAT_SPECIFIC (type)) = gnat_aux_default; | |
2761 | } | |
2762 | ||
ae438bc5 UW |
2763 | /* Helper function to initialize a newly allocated type. Set type code |
2764 | to CODE and initialize the type-specific fields accordingly. */ | |
2765 | ||
2766 | static void | |
2767 | set_type_code (struct type *type, enum type_code code) | |
2768 | { | |
2769 | TYPE_CODE (type) = code; | |
2770 | ||
2771 | switch (code) | |
2772 | { | |
2773 | case TYPE_CODE_STRUCT: | |
2774 | case TYPE_CODE_UNION: | |
2775 | case TYPE_CODE_NAMESPACE: | |
2776 | INIT_CPLUS_SPECIFIC (type); | |
2777 | break; | |
2778 | case TYPE_CODE_FLT: | |
2779 | TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_FLOATFORMAT; | |
2780 | break; | |
2781 | case TYPE_CODE_FUNC: | |
2782 | INIT_FUNC_SPECIFIC (type); | |
2783 | break; | |
2784 | } | |
2785 | } | |
2786 | ||
19f392bc UW |
2787 | /* Helper function to verify floating-point format and size. |
2788 | BIT is the type size in bits; if BIT equals -1, the size is | |
2789 | determined by the floatformat. Returns size to be used. */ | |
2790 | ||
2791 | static int | |
0db7851f | 2792 | verify_floatformat (int bit, const struct floatformat *floatformat) |
19f392bc | 2793 | { |
0db7851f | 2794 | gdb_assert (floatformat != NULL); |
9b790ce7 | 2795 | |
19f392bc | 2796 | if (bit == -1) |
0db7851f | 2797 | bit = floatformat->totalsize; |
19f392bc | 2798 | |
0db7851f UW |
2799 | gdb_assert (bit >= 0); |
2800 | gdb_assert (bit >= floatformat->totalsize); | |
19f392bc UW |
2801 | |
2802 | return bit; | |
2803 | } | |
2804 | ||
0db7851f UW |
2805 | /* Return the floating-point format for a floating-point variable of |
2806 | type TYPE. */ | |
2807 | ||
2808 | const struct floatformat * | |
2809 | floatformat_from_type (const struct type *type) | |
2810 | { | |
2811 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_FLT); | |
2812 | gdb_assert (TYPE_FLOATFORMAT (type)); | |
2813 | return TYPE_FLOATFORMAT (type); | |
2814 | } | |
2815 | ||
c906108c SS |
2816 | /* Helper function to initialize the standard scalar types. |
2817 | ||
86f62fd7 TT |
2818 | If NAME is non-NULL, then it is used to initialize the type name. |
2819 | Note that NAME is not copied; it is required to have a lifetime at | |
2820 | least as long as OBJFILE. */ | |
c906108c SS |
2821 | |
2822 | struct type * | |
77b7c781 | 2823 | init_type (struct objfile *objfile, enum type_code code, int bit, |
19f392bc | 2824 | const char *name) |
c906108c | 2825 | { |
52f0bd74 | 2826 | struct type *type; |
c906108c SS |
2827 | |
2828 | type = alloc_type (objfile); | |
ae438bc5 | 2829 | set_type_code (type, code); |
77b7c781 UW |
2830 | gdb_assert ((bit % TARGET_CHAR_BIT) == 0); |
2831 | TYPE_LENGTH (type) = bit / TARGET_CHAR_BIT; | |
86f62fd7 | 2832 | TYPE_NAME (type) = name; |
c906108c | 2833 | |
c16abbde | 2834 | return type; |
c906108c | 2835 | } |
19f392bc | 2836 | |
46a4882b PA |
2837 | /* Allocate a TYPE_CODE_ERROR type structure associated with OBJFILE, |
2838 | to use with variables that have no debug info. NAME is the type | |
2839 | name. */ | |
2840 | ||
2841 | static struct type * | |
2842 | init_nodebug_var_type (struct objfile *objfile, const char *name) | |
2843 | { | |
2844 | return init_type (objfile, TYPE_CODE_ERROR, 0, name); | |
2845 | } | |
2846 | ||
19f392bc UW |
2847 | /* Allocate a TYPE_CODE_INT type structure associated with OBJFILE. |
2848 | BIT is the type size in bits. If UNSIGNED_P is non-zero, set | |
2849 | the type's TYPE_UNSIGNED flag. NAME is the type name. */ | |
2850 | ||
2851 | struct type * | |
2852 | init_integer_type (struct objfile *objfile, | |
2853 | int bit, int unsigned_p, const char *name) | |
2854 | { | |
2855 | struct type *t; | |
2856 | ||
77b7c781 | 2857 | t = init_type (objfile, TYPE_CODE_INT, bit, name); |
19f392bc UW |
2858 | if (unsigned_p) |
2859 | TYPE_UNSIGNED (t) = 1; | |
2860 | ||
2861 | return t; | |
2862 | } | |
2863 | ||
2864 | /* Allocate a TYPE_CODE_CHAR type structure associated with OBJFILE. | |
2865 | BIT is the type size in bits. If UNSIGNED_P is non-zero, set | |
2866 | the type's TYPE_UNSIGNED flag. NAME is the type name. */ | |
2867 | ||
2868 | struct type * | |
2869 | init_character_type (struct objfile *objfile, | |
2870 | int bit, int unsigned_p, const char *name) | |
2871 | { | |
2872 | struct type *t; | |
2873 | ||
77b7c781 | 2874 | t = init_type (objfile, TYPE_CODE_CHAR, bit, name); |
19f392bc UW |
2875 | if (unsigned_p) |
2876 | TYPE_UNSIGNED (t) = 1; | |
2877 | ||
2878 | return t; | |
2879 | } | |
2880 | ||
2881 | /* Allocate a TYPE_CODE_BOOL type structure associated with OBJFILE. | |
2882 | BIT is the type size in bits. If UNSIGNED_P is non-zero, set | |
2883 | the type's TYPE_UNSIGNED flag. NAME is the type name. */ | |
2884 | ||
2885 | struct type * | |
2886 | init_boolean_type (struct objfile *objfile, | |
2887 | int bit, int unsigned_p, const char *name) | |
2888 | { | |
2889 | struct type *t; | |
2890 | ||
77b7c781 | 2891 | t = init_type (objfile, TYPE_CODE_BOOL, bit, name); |
19f392bc UW |
2892 | if (unsigned_p) |
2893 | TYPE_UNSIGNED (t) = 1; | |
2894 | ||
2895 | return t; | |
2896 | } | |
2897 | ||
2898 | /* Allocate a TYPE_CODE_FLT type structure associated with OBJFILE. | |
2899 | BIT is the type size in bits; if BIT equals -1, the size is | |
2900 | determined by the floatformat. NAME is the type name. Set the | |
2901 | TYPE_FLOATFORMAT from FLOATFORMATS. */ | |
2902 | ||
2903 | struct type * | |
2904 | init_float_type (struct objfile *objfile, | |
2905 | int bit, const char *name, | |
2906 | const struct floatformat **floatformats) | |
2907 | { | |
0db7851f UW |
2908 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
2909 | const struct floatformat *fmt = floatformats[gdbarch_byte_order (gdbarch)]; | |
19f392bc UW |
2910 | struct type *t; |
2911 | ||
0db7851f | 2912 | bit = verify_floatformat (bit, fmt); |
77b7c781 | 2913 | t = init_type (objfile, TYPE_CODE_FLT, bit, name); |
0db7851f | 2914 | TYPE_FLOATFORMAT (t) = fmt; |
19f392bc UW |
2915 | |
2916 | return t; | |
2917 | } | |
2918 | ||
2919 | /* Allocate a TYPE_CODE_DECFLOAT type structure associated with OBJFILE. | |
2920 | BIT is the type size in bits. NAME is the type name. */ | |
2921 | ||
2922 | struct type * | |
2923 | init_decfloat_type (struct objfile *objfile, int bit, const char *name) | |
2924 | { | |
2925 | struct type *t; | |
2926 | ||
77b7c781 | 2927 | t = init_type (objfile, TYPE_CODE_DECFLOAT, bit, name); |
19f392bc UW |
2928 | return t; |
2929 | } | |
2930 | ||
2931 | /* Allocate a TYPE_CODE_COMPLEX type structure associated with OBJFILE. | |
2932 | NAME is the type name. TARGET_TYPE is the component float type. */ | |
2933 | ||
2934 | struct type * | |
2935 | init_complex_type (struct objfile *objfile, | |
2936 | const char *name, struct type *target_type) | |
2937 | { | |
2938 | struct type *t; | |
2939 | ||
2940 | t = init_type (objfile, TYPE_CODE_COMPLEX, | |
77b7c781 | 2941 | 2 * TYPE_LENGTH (target_type) * TARGET_CHAR_BIT, name); |
19f392bc UW |
2942 | TYPE_TARGET_TYPE (t) = target_type; |
2943 | return t; | |
2944 | } | |
2945 | ||
2946 | /* Allocate a TYPE_CODE_PTR type structure associated with OBJFILE. | |
2947 | BIT is the pointer type size in bits. NAME is the type name. | |
2948 | TARGET_TYPE is the pointer target type. Always sets the pointer type's | |
2949 | TYPE_UNSIGNED flag. */ | |
2950 | ||
2951 | struct type * | |
2952 | init_pointer_type (struct objfile *objfile, | |
2953 | int bit, const char *name, struct type *target_type) | |
2954 | { | |
2955 | struct type *t; | |
2956 | ||
77b7c781 | 2957 | t = init_type (objfile, TYPE_CODE_PTR, bit, name); |
19f392bc UW |
2958 | TYPE_TARGET_TYPE (t) = target_type; |
2959 | TYPE_UNSIGNED (t) = 1; | |
2960 | return t; | |
2961 | } | |
2962 | ||
2b4424c3 TT |
2963 | /* See gdbtypes.h. */ |
2964 | ||
2965 | unsigned | |
2966 | type_raw_align (struct type *type) | |
2967 | { | |
2968 | if (type->align_log2 != 0) | |
2969 | return 1 << (type->align_log2 - 1); | |
2970 | return 0; | |
2971 | } | |
2972 | ||
2973 | /* See gdbtypes.h. */ | |
2974 | ||
2975 | unsigned | |
2976 | type_align (struct type *type) | |
2977 | { | |
5561fc30 | 2978 | /* Check alignment provided in the debug information. */ |
2b4424c3 TT |
2979 | unsigned raw_align = type_raw_align (type); |
2980 | if (raw_align != 0) | |
2981 | return raw_align; | |
2982 | ||
5561fc30 AB |
2983 | /* Allow the architecture to provide an alignment. */ |
2984 | struct gdbarch *arch = get_type_arch (type); | |
2985 | ULONGEST align = gdbarch_type_align (arch, type); | |
2986 | if (align != 0) | |
2987 | return align; | |
2988 | ||
2b4424c3 TT |
2989 | switch (TYPE_CODE (type)) |
2990 | { | |
2991 | case TYPE_CODE_PTR: | |
2992 | case TYPE_CODE_FUNC: | |
2993 | case TYPE_CODE_FLAGS: | |
2994 | case TYPE_CODE_INT: | |
75ba10dc | 2995 | case TYPE_CODE_RANGE: |
2b4424c3 TT |
2996 | case TYPE_CODE_FLT: |
2997 | case TYPE_CODE_ENUM: | |
2998 | case TYPE_CODE_REF: | |
2999 | case TYPE_CODE_RVALUE_REF: | |
3000 | case TYPE_CODE_CHAR: | |
3001 | case TYPE_CODE_BOOL: | |
3002 | case TYPE_CODE_DECFLOAT: | |
70cd633e AB |
3003 | case TYPE_CODE_METHODPTR: |
3004 | case TYPE_CODE_MEMBERPTR: | |
5561fc30 | 3005 | align = type_length_units (check_typedef (type)); |
2b4424c3 TT |
3006 | break; |
3007 | ||
3008 | case TYPE_CODE_ARRAY: | |
3009 | case TYPE_CODE_COMPLEX: | |
3010 | case TYPE_CODE_TYPEDEF: | |
3011 | align = type_align (TYPE_TARGET_TYPE (type)); | |
3012 | break; | |
3013 | ||
3014 | case TYPE_CODE_STRUCT: | |
3015 | case TYPE_CODE_UNION: | |
3016 | { | |
3017 | if (TYPE_NFIELDS (type) == 0) | |
3018 | { | |
3019 | /* An empty struct has alignment 1. */ | |
3020 | align = 1; | |
3021 | break; | |
3022 | } | |
3023 | for (unsigned i = 0; i < TYPE_NFIELDS (type); ++i) | |
3024 | { | |
bf9a735e | 3025 | if (!field_is_static (&TYPE_FIELD (type, i))) |
2b4424c3 | 3026 | { |
bf9a735e AB |
3027 | ULONGEST f_align = type_align (TYPE_FIELD_TYPE (type, i)); |
3028 | if (f_align == 0) | |
3029 | { | |
3030 | /* Don't pretend we know something we don't. */ | |
3031 | align = 0; | |
3032 | break; | |
3033 | } | |
3034 | if (f_align > align) | |
3035 | align = f_align; | |
2b4424c3 | 3036 | } |
2b4424c3 TT |
3037 | } |
3038 | } | |
3039 | break; | |
3040 | ||
3041 | case TYPE_CODE_SET: | |
2b4424c3 TT |
3042 | case TYPE_CODE_STRING: |
3043 | /* Not sure what to do here, and these can't appear in C or C++ | |
3044 | anyway. */ | |
3045 | break; | |
3046 | ||
2b4424c3 TT |
3047 | case TYPE_CODE_VOID: |
3048 | align = 1; | |
3049 | break; | |
3050 | ||
3051 | case TYPE_CODE_ERROR: | |
3052 | case TYPE_CODE_METHOD: | |
3053 | default: | |
3054 | break; | |
3055 | } | |
3056 | ||
3057 | if ((align & (align - 1)) != 0) | |
3058 | { | |
3059 | /* Not a power of 2, so pass. */ | |
3060 | align = 0; | |
3061 | } | |
3062 | ||
3063 | return align; | |
3064 | } | |
3065 | ||
3066 | /* See gdbtypes.h. */ | |
3067 | ||
3068 | bool | |
3069 | set_type_align (struct type *type, ULONGEST align) | |
3070 | { | |
3071 | /* Must be a power of 2. Zero is ok. */ | |
3072 | gdb_assert ((align & (align - 1)) == 0); | |
3073 | ||
3074 | unsigned result = 0; | |
3075 | while (align != 0) | |
3076 | { | |
3077 | ++result; | |
3078 | align >>= 1; | |
3079 | } | |
3080 | ||
3081 | if (result >= (1 << TYPE_ALIGN_BITS)) | |
3082 | return false; | |
3083 | ||
3084 | type->align_log2 = result; | |
3085 | return true; | |
3086 | } | |
3087 | ||
5212577a DE |
3088 | \f |
3089 | /* Queries on types. */ | |
c906108c | 3090 | |
c906108c | 3091 | int |
fba45db2 | 3092 | can_dereference (struct type *t) |
c906108c | 3093 | { |
7ba81444 MS |
3094 | /* FIXME: Should we return true for references as well as |
3095 | pointers? */ | |
f168693b | 3096 | t = check_typedef (t); |
c906108c SS |
3097 | return |
3098 | (t != NULL | |
3099 | && TYPE_CODE (t) == TYPE_CODE_PTR | |
3100 | && TYPE_CODE (TYPE_TARGET_TYPE (t)) != TYPE_CODE_VOID); | |
3101 | } | |
3102 | ||
adf40b2e | 3103 | int |
fba45db2 | 3104 | is_integral_type (struct type *t) |
adf40b2e | 3105 | { |
f168693b | 3106 | t = check_typedef (t); |
adf40b2e JM |
3107 | return |
3108 | ((t != NULL) | |
d4f3574e SS |
3109 | && ((TYPE_CODE (t) == TYPE_CODE_INT) |
3110 | || (TYPE_CODE (t) == TYPE_CODE_ENUM) | |
4f2aea11 | 3111 | || (TYPE_CODE (t) == TYPE_CODE_FLAGS) |
d4f3574e SS |
3112 | || (TYPE_CODE (t) == TYPE_CODE_CHAR) |
3113 | || (TYPE_CODE (t) == TYPE_CODE_RANGE) | |
3114 | || (TYPE_CODE (t) == TYPE_CODE_BOOL))); | |
adf40b2e JM |
3115 | } |
3116 | ||
70100014 UW |
3117 | int |
3118 | is_floating_type (struct type *t) | |
3119 | { | |
3120 | t = check_typedef (t); | |
3121 | return | |
3122 | ((t != NULL) | |
3123 | && ((TYPE_CODE (t) == TYPE_CODE_FLT) | |
3124 | || (TYPE_CODE (t) == TYPE_CODE_DECFLOAT))); | |
3125 | } | |
3126 | ||
e09342b5 TJB |
3127 | /* Return true if TYPE is scalar. */ |
3128 | ||
220475ed | 3129 | int |
e09342b5 TJB |
3130 | is_scalar_type (struct type *type) |
3131 | { | |
f168693b | 3132 | type = check_typedef (type); |
e09342b5 TJB |
3133 | |
3134 | switch (TYPE_CODE (type)) | |
3135 | { | |
3136 | case TYPE_CODE_ARRAY: | |
3137 | case TYPE_CODE_STRUCT: | |
3138 | case TYPE_CODE_UNION: | |
3139 | case TYPE_CODE_SET: | |
3140 | case TYPE_CODE_STRING: | |
e09342b5 TJB |
3141 | return 0; |
3142 | default: | |
3143 | return 1; | |
3144 | } | |
3145 | } | |
3146 | ||
3147 | /* Return true if T is scalar, or a composite type which in practice has | |
90e4670f TJB |
3148 | the memory layout of a scalar type. E.g., an array or struct with only |
3149 | one scalar element inside it, or a union with only scalar elements. */ | |
e09342b5 TJB |
3150 | |
3151 | int | |
3152 | is_scalar_type_recursive (struct type *t) | |
3153 | { | |
f168693b | 3154 | t = check_typedef (t); |
e09342b5 TJB |
3155 | |
3156 | if (is_scalar_type (t)) | |
3157 | return 1; | |
3158 | /* Are we dealing with an array or string of known dimensions? */ | |
3159 | else if ((TYPE_CODE (t) == TYPE_CODE_ARRAY | |
3160 | || TYPE_CODE (t) == TYPE_CODE_STRING) && TYPE_NFIELDS (t) == 1 | |
3161 | && TYPE_CODE (TYPE_INDEX_TYPE (t)) == TYPE_CODE_RANGE) | |
3162 | { | |
3163 | LONGEST low_bound, high_bound; | |
3164 | struct type *elt_type = check_typedef (TYPE_TARGET_TYPE (t)); | |
3165 | ||
3166 | get_discrete_bounds (TYPE_INDEX_TYPE (t), &low_bound, &high_bound); | |
3167 | ||
3168 | return high_bound == low_bound && is_scalar_type_recursive (elt_type); | |
3169 | } | |
3170 | /* Are we dealing with a struct with one element? */ | |
3171 | else if (TYPE_CODE (t) == TYPE_CODE_STRUCT && TYPE_NFIELDS (t) == 1) | |
3172 | return is_scalar_type_recursive (TYPE_FIELD_TYPE (t, 0)); | |
3173 | else if (TYPE_CODE (t) == TYPE_CODE_UNION) | |
3174 | { | |
3175 | int i, n = TYPE_NFIELDS (t); | |
3176 | ||
3177 | /* If all elements of the union are scalar, then the union is scalar. */ | |
3178 | for (i = 0; i < n; i++) | |
3179 | if (!is_scalar_type_recursive (TYPE_FIELD_TYPE (t, i))) | |
3180 | return 0; | |
3181 | ||
3182 | return 1; | |
3183 | } | |
3184 | ||
3185 | return 0; | |
3186 | } | |
3187 | ||
6c659fc2 SC |
3188 | /* Return true is T is a class or a union. False otherwise. */ |
3189 | ||
3190 | int | |
3191 | class_or_union_p (const struct type *t) | |
3192 | { | |
3193 | return (TYPE_CODE (t) == TYPE_CODE_STRUCT | |
3194 | || TYPE_CODE (t) == TYPE_CODE_UNION); | |
3195 | } | |
3196 | ||
4e8f195d TT |
3197 | /* A helper function which returns true if types A and B represent the |
3198 | "same" class type. This is true if the types have the same main | |
3199 | type, or the same name. */ | |
3200 | ||
3201 | int | |
3202 | class_types_same_p (const struct type *a, const struct type *b) | |
3203 | { | |
3204 | return (TYPE_MAIN_TYPE (a) == TYPE_MAIN_TYPE (b) | |
3205 | || (TYPE_NAME (a) && TYPE_NAME (b) | |
3206 | && !strcmp (TYPE_NAME (a), TYPE_NAME (b)))); | |
3207 | } | |
3208 | ||
a9d5ef47 SW |
3209 | /* If BASE is an ancestor of DCLASS return the distance between them. |
3210 | otherwise return -1; | |
3211 | eg: | |
3212 | ||
3213 | class A {}; | |
3214 | class B: public A {}; | |
3215 | class C: public B {}; | |
3216 | class D: C {}; | |
3217 | ||
3218 | distance_to_ancestor (A, A, 0) = 0 | |
3219 | distance_to_ancestor (A, B, 0) = 1 | |
3220 | distance_to_ancestor (A, C, 0) = 2 | |
3221 | distance_to_ancestor (A, D, 0) = 3 | |
3222 | ||
3223 | If PUBLIC is 1 then only public ancestors are considered, | |
3224 | and the function returns the distance only if BASE is a public ancestor | |
3225 | of DCLASS. | |
3226 | Eg: | |
3227 | ||
0963b4bd | 3228 | distance_to_ancestor (A, D, 1) = -1. */ |
c906108c | 3229 | |
0526b37a | 3230 | static int |
fe978cb0 | 3231 | distance_to_ancestor (struct type *base, struct type *dclass, int is_public) |
c906108c SS |
3232 | { |
3233 | int i; | |
a9d5ef47 | 3234 | int d; |
c5aa993b | 3235 | |
f168693b SM |
3236 | base = check_typedef (base); |
3237 | dclass = check_typedef (dclass); | |
c906108c | 3238 | |
4e8f195d | 3239 | if (class_types_same_p (base, dclass)) |
a9d5ef47 | 3240 | return 0; |
c906108c SS |
3241 | |
3242 | for (i = 0; i < TYPE_N_BASECLASSES (dclass); i++) | |
4e8f195d | 3243 | { |
fe978cb0 | 3244 | if (is_public && ! BASETYPE_VIA_PUBLIC (dclass, i)) |
0526b37a SW |
3245 | continue; |
3246 | ||
fe978cb0 | 3247 | d = distance_to_ancestor (base, TYPE_BASECLASS (dclass, i), is_public); |
a9d5ef47 SW |
3248 | if (d >= 0) |
3249 | return 1 + d; | |
4e8f195d | 3250 | } |
c906108c | 3251 | |
a9d5ef47 | 3252 | return -1; |
c906108c | 3253 | } |
4e8f195d | 3254 | |
0526b37a SW |
3255 | /* Check whether BASE is an ancestor or base class or DCLASS |
3256 | Return 1 if so, and 0 if not. | |
3257 | Note: If BASE and DCLASS are of the same type, this function | |
3258 | will return 1. So for some class A, is_ancestor (A, A) will | |
3259 | return 1. */ | |
3260 | ||
3261 | int | |
3262 | is_ancestor (struct type *base, struct type *dclass) | |
3263 | { | |
a9d5ef47 | 3264 | return distance_to_ancestor (base, dclass, 0) >= 0; |
0526b37a SW |
3265 | } |
3266 | ||
4e8f195d TT |
3267 | /* Like is_ancestor, but only returns true when BASE is a public |
3268 | ancestor of DCLASS. */ | |
3269 | ||
3270 | int | |
3271 | is_public_ancestor (struct type *base, struct type *dclass) | |
3272 | { | |
a9d5ef47 | 3273 | return distance_to_ancestor (base, dclass, 1) >= 0; |
4e8f195d TT |
3274 | } |
3275 | ||
3276 | /* A helper function for is_unique_ancestor. */ | |
3277 | ||
3278 | static int | |
3279 | is_unique_ancestor_worker (struct type *base, struct type *dclass, | |
3280 | int *offset, | |
8af8e3bc PA |
3281 | const gdb_byte *valaddr, int embedded_offset, |
3282 | CORE_ADDR address, struct value *val) | |
4e8f195d TT |
3283 | { |
3284 | int i, count = 0; | |
3285 | ||
f168693b SM |
3286 | base = check_typedef (base); |
3287 | dclass = check_typedef (dclass); | |
4e8f195d TT |
3288 | |
3289 | for (i = 0; i < TYPE_N_BASECLASSES (dclass) && count < 2; ++i) | |
3290 | { | |
8af8e3bc PA |
3291 | struct type *iter; |
3292 | int this_offset; | |
4e8f195d | 3293 | |
8af8e3bc PA |
3294 | iter = check_typedef (TYPE_BASECLASS (dclass, i)); |
3295 | ||
3296 | this_offset = baseclass_offset (dclass, i, valaddr, embedded_offset, | |
3297 | address, val); | |
4e8f195d TT |
3298 | |
3299 | if (class_types_same_p (base, iter)) | |
3300 | { | |
3301 | /* If this is the first subclass, set *OFFSET and set count | |
3302 | to 1. Otherwise, if this is at the same offset as | |
3303 | previous instances, do nothing. Otherwise, increment | |
3304 | count. */ | |
3305 | if (*offset == -1) | |
3306 | { | |
3307 | *offset = this_offset; | |
3308 | count = 1; | |
3309 | } | |
3310 | else if (this_offset == *offset) | |
3311 | { | |
3312 | /* Nothing. */ | |
3313 | } | |
3314 | else | |
3315 | ++count; | |
3316 | } | |
3317 | else | |
3318 | count += is_unique_ancestor_worker (base, iter, offset, | |
8af8e3bc PA |
3319 | valaddr, |
3320 | embedded_offset + this_offset, | |
3321 | address, val); | |
4e8f195d TT |
3322 | } |
3323 | ||
3324 | return count; | |
3325 | } | |
3326 | ||
3327 | /* Like is_ancestor, but only returns true if BASE is a unique base | |
3328 | class of the type of VAL. */ | |
3329 | ||
3330 | int | |
3331 | is_unique_ancestor (struct type *base, struct value *val) | |
3332 | { | |
3333 | int offset = -1; | |
3334 | ||
3335 | return is_unique_ancestor_worker (base, value_type (val), &offset, | |
8af8e3bc PA |
3336 | value_contents_for_printing (val), |
3337 | value_embedded_offset (val), | |
3338 | value_address (val), val) == 1; | |
4e8f195d TT |
3339 | } |
3340 | ||
c906108c | 3341 | \f |
5212577a | 3342 | /* Overload resolution. */ |
c906108c | 3343 | |
6403aeea SW |
3344 | /* Return the sum of the rank of A with the rank of B. */ |
3345 | ||
3346 | struct rank | |
3347 | sum_ranks (struct rank a, struct rank b) | |
3348 | { | |
3349 | struct rank c; | |
3350 | c.rank = a.rank + b.rank; | |
a9d5ef47 | 3351 | c.subrank = a.subrank + b.subrank; |
6403aeea SW |
3352 | return c; |
3353 | } | |
3354 | ||
3355 | /* Compare rank A and B and return: | |
3356 | 0 if a = b | |
3357 | 1 if a is better than b | |
3358 | -1 if b is better than a. */ | |
3359 | ||
3360 | int | |
3361 | compare_ranks (struct rank a, struct rank b) | |
3362 | { | |
3363 | if (a.rank == b.rank) | |
a9d5ef47 SW |
3364 | { |
3365 | if (a.subrank == b.subrank) | |
3366 | return 0; | |
3367 | if (a.subrank < b.subrank) | |
3368 | return 1; | |
3369 | if (a.subrank > b.subrank) | |
3370 | return -1; | |
3371 | } | |
6403aeea SW |
3372 | |
3373 | if (a.rank < b.rank) | |
3374 | return 1; | |
3375 | ||
0963b4bd | 3376 | /* a.rank > b.rank */ |
6403aeea SW |
3377 | return -1; |
3378 | } | |
c5aa993b | 3379 | |
0963b4bd | 3380 | /* Functions for overload resolution begin here. */ |
c906108c SS |
3381 | |
3382 | /* Compare two badness vectors A and B and return the result. | |
7ba81444 MS |
3383 | 0 => A and B are identical |
3384 | 1 => A and B are incomparable | |
3385 | 2 => A is better than B | |
3386 | 3 => A is worse than B */ | |
c906108c SS |
3387 | |
3388 | int | |
82ceee50 | 3389 | compare_badness (const badness_vector &a, const badness_vector &b) |
c906108c SS |
3390 | { |
3391 | int i; | |
3392 | int tmp; | |
c5aa993b JM |
3393 | short found_pos = 0; /* any positives in c? */ |
3394 | short found_neg = 0; /* any negatives in c? */ | |
3395 | ||
82ceee50 PA |
3396 | /* differing sizes => incomparable */ |
3397 | if (a.size () != b.size ()) | |
c906108c SS |
3398 | return 1; |
3399 | ||
c5aa993b | 3400 | /* Subtract b from a */ |
82ceee50 | 3401 | for (i = 0; i < a.size (); i++) |
c906108c | 3402 | { |
82ceee50 | 3403 | tmp = compare_ranks (b[i], a[i]); |
c906108c | 3404 | if (tmp > 0) |
c5aa993b | 3405 | found_pos = 1; |
c906108c | 3406 | else if (tmp < 0) |
c5aa993b | 3407 | found_neg = 1; |
c906108c SS |
3408 | } |
3409 | ||
3410 | if (found_pos) | |
3411 | { | |
3412 | if (found_neg) | |
c5aa993b | 3413 | return 1; /* incomparable */ |
c906108c | 3414 | else |
c5aa993b | 3415 | return 3; /* A > B */ |
c906108c | 3416 | } |
c5aa993b JM |
3417 | else |
3418 | /* no positives */ | |
c906108c SS |
3419 | { |
3420 | if (found_neg) | |
c5aa993b | 3421 | return 2; /* A < B */ |
c906108c | 3422 | else |
c5aa993b | 3423 | return 0; /* A == B */ |
c906108c SS |
3424 | } |
3425 | } | |
3426 | ||
6b1747cd | 3427 | /* Rank a function by comparing its parameter types (PARMS), to the |
82ceee50 PA |
3428 | types of an argument list (ARGS). Return the badness vector. This |
3429 | has ARGS.size() + 1 entries. */ | |
c906108c | 3430 | |
82ceee50 | 3431 | badness_vector |
6b1747cd PA |
3432 | rank_function (gdb::array_view<type *> parms, |
3433 | gdb::array_view<value *> args) | |
c906108c | 3434 | { |
82ceee50 PA |
3435 | /* add 1 for the length-match rank. */ |
3436 | badness_vector bv; | |
3437 | bv.reserve (1 + args.size ()); | |
c906108c SS |
3438 | |
3439 | /* First compare the lengths of the supplied lists. | |
7ba81444 | 3440 | If there is a mismatch, set it to a high value. */ |
c5aa993b | 3441 | |
c906108c | 3442 | /* pai/1997-06-03 FIXME: when we have debug info about default |
7ba81444 MS |
3443 | arguments and ellipsis parameter lists, we should consider those |
3444 | and rank the length-match more finely. */ | |
c906108c | 3445 | |
82ceee50 PA |
3446 | bv.push_back ((args.size () != parms.size ()) |
3447 | ? LENGTH_MISMATCH_BADNESS | |
3448 | : EXACT_MATCH_BADNESS); | |
c906108c | 3449 | |
0963b4bd | 3450 | /* Now rank all the parameters of the candidate function. */ |
82ceee50 PA |
3451 | size_t min_len = std::min (parms.size (), args.size ()); |
3452 | ||
3453 | for (size_t i = 0; i < min_len; i++) | |
3454 | bv.push_back (rank_one_type (parms[i], value_type (args[i]), | |
3455 | args[i])); | |
c906108c | 3456 | |
0963b4bd | 3457 | /* If more arguments than parameters, add dummy entries. */ |
82ceee50 PA |
3458 | for (size_t i = min_len; i < args.size (); i++) |
3459 | bv.push_back (TOO_FEW_PARAMS_BADNESS); | |
c906108c SS |
3460 | |
3461 | return bv; | |
3462 | } | |
3463 | ||
973ccf8b DJ |
3464 | /* Compare the names of two integer types, assuming that any sign |
3465 | qualifiers have been checked already. We do it this way because | |
3466 | there may be an "int" in the name of one of the types. */ | |
3467 | ||
3468 | static int | |
3469 | integer_types_same_name_p (const char *first, const char *second) | |
3470 | { | |
3471 | int first_p, second_p; | |
3472 | ||
7ba81444 MS |
3473 | /* If both are shorts, return 1; if neither is a short, keep |
3474 | checking. */ | |
973ccf8b DJ |
3475 | first_p = (strstr (first, "short") != NULL); |
3476 | second_p = (strstr (second, "short") != NULL); | |
3477 | if (first_p && second_p) | |
3478 | return 1; | |
3479 | if (first_p || second_p) | |
3480 | return 0; | |
3481 | ||
3482 | /* Likewise for long. */ | |
3483 | first_p = (strstr (first, "long") != NULL); | |
3484 | second_p = (strstr (second, "long") != NULL); | |
3485 | if (first_p && second_p) | |
3486 | return 1; | |
3487 | if (first_p || second_p) | |
3488 | return 0; | |
3489 | ||
3490 | /* Likewise for char. */ | |
3491 | first_p = (strstr (first, "char") != NULL); | |
3492 | second_p = (strstr (second, "char") != NULL); | |
3493 | if (first_p && second_p) | |
3494 | return 1; | |
3495 | if (first_p || second_p) | |
3496 | return 0; | |
3497 | ||
3498 | /* They must both be ints. */ | |
3499 | return 1; | |
3500 | } | |
3501 | ||
894882e3 TT |
3502 | /* Compares type A to type B. Returns true if they represent the same |
3503 | type, false otherwise. */ | |
7062b0a0 | 3504 | |
894882e3 | 3505 | bool |
7062b0a0 SW |
3506 | types_equal (struct type *a, struct type *b) |
3507 | { | |
3508 | /* Identical type pointers. */ | |
3509 | /* However, this still doesn't catch all cases of same type for b | |
3510 | and a. The reason is that builtin types are different from | |
3511 | the same ones constructed from the object. */ | |
3512 | if (a == b) | |
894882e3 | 3513 | return true; |
7062b0a0 SW |
3514 | |
3515 | /* Resolve typedefs */ | |
3516 | if (TYPE_CODE (a) == TYPE_CODE_TYPEDEF) | |
3517 | a = check_typedef (a); | |
3518 | if (TYPE_CODE (b) == TYPE_CODE_TYPEDEF) | |
3519 | b = check_typedef (b); | |
3520 | ||
3521 | /* If after resolving typedefs a and b are not of the same type | |
3522 | code then they are not equal. */ | |
3523 | if (TYPE_CODE (a) != TYPE_CODE (b)) | |
894882e3 | 3524 | return false; |
7062b0a0 SW |
3525 | |
3526 | /* If a and b are both pointers types or both reference types then | |
3527 | they are equal of the same type iff the objects they refer to are | |
3528 | of the same type. */ | |
3529 | if (TYPE_CODE (a) == TYPE_CODE_PTR | |
3530 | || TYPE_CODE (a) == TYPE_CODE_REF) | |
3531 | return types_equal (TYPE_TARGET_TYPE (a), | |
3532 | TYPE_TARGET_TYPE (b)); | |
3533 | ||
0963b4bd | 3534 | /* Well, damnit, if the names are exactly the same, I'll say they |
7062b0a0 SW |
3535 | are exactly the same. This happens when we generate method |
3536 | stubs. The types won't point to the same address, but they | |
0963b4bd | 3537 | really are the same. */ |
7062b0a0 SW |
3538 | |
3539 | if (TYPE_NAME (a) && TYPE_NAME (b) | |
3540 | && strcmp (TYPE_NAME (a), TYPE_NAME (b)) == 0) | |
894882e3 | 3541 | return true; |
7062b0a0 SW |
3542 | |
3543 | /* Check if identical after resolving typedefs. */ | |
3544 | if (a == b) | |
894882e3 | 3545 | return true; |
7062b0a0 | 3546 | |
9ce98649 TT |
3547 | /* Two function types are equal if their argument and return types |
3548 | are equal. */ | |
3549 | if (TYPE_CODE (a) == TYPE_CODE_FUNC) | |
3550 | { | |
3551 | int i; | |
3552 | ||
3553 | if (TYPE_NFIELDS (a) != TYPE_NFIELDS (b)) | |
894882e3 | 3554 | return false; |
9ce98649 TT |
3555 | |
3556 | if (!types_equal (TYPE_TARGET_TYPE (a), TYPE_TARGET_TYPE (b))) | |
894882e3 | 3557 | return false; |
9ce98649 TT |
3558 | |
3559 | for (i = 0; i < TYPE_NFIELDS (a); ++i) | |
3560 | if (!types_equal (TYPE_FIELD_TYPE (a, i), TYPE_FIELD_TYPE (b, i))) | |
894882e3 | 3561 | return false; |
9ce98649 | 3562 | |
894882e3 | 3563 | return true; |
9ce98649 TT |
3564 | } |
3565 | ||
894882e3 | 3566 | return false; |
7062b0a0 | 3567 | } |
ca092b61 DE |
3568 | \f |
3569 | /* Deep comparison of types. */ | |
3570 | ||
3571 | /* An entry in the type-equality bcache. */ | |
3572 | ||
894882e3 | 3573 | struct type_equality_entry |
ca092b61 | 3574 | { |
894882e3 TT |
3575 | type_equality_entry (struct type *t1, struct type *t2) |
3576 | : type1 (t1), | |
3577 | type2 (t2) | |
3578 | { | |
3579 | } | |
ca092b61 | 3580 | |
894882e3 TT |
3581 | struct type *type1, *type2; |
3582 | }; | |
ca092b61 | 3583 | |
894882e3 TT |
3584 | /* A helper function to compare two strings. Returns true if they are |
3585 | the same, false otherwise. Handles NULLs properly. */ | |
ca092b61 | 3586 | |
894882e3 | 3587 | static bool |
ca092b61 DE |
3588 | compare_maybe_null_strings (const char *s, const char *t) |
3589 | { | |
894882e3 TT |
3590 | if (s == NULL || t == NULL) |
3591 | return s == t; | |
ca092b61 DE |
3592 | return strcmp (s, t) == 0; |
3593 | } | |
3594 | ||
3595 | /* A helper function for check_types_worklist that checks two types for | |
894882e3 TT |
3596 | "deep" equality. Returns true if the types are considered the |
3597 | same, false otherwise. */ | |
ca092b61 | 3598 | |
894882e3 | 3599 | static bool |
ca092b61 | 3600 | check_types_equal (struct type *type1, struct type *type2, |
894882e3 | 3601 | std::vector<type_equality_entry> *worklist) |
ca092b61 | 3602 | { |
f168693b SM |
3603 | type1 = check_typedef (type1); |
3604 | type2 = check_typedef (type2); | |
ca092b61 DE |
3605 | |
3606 | if (type1 == type2) | |
894882e3 | 3607 | return true; |
ca092b61 DE |
3608 | |
3609 | if (TYPE_CODE (type1) != TYPE_CODE (type2) | |
3610 | || TYPE_LENGTH (type1) != TYPE_LENGTH (type2) | |
3611 | || TYPE_UNSIGNED (type1) != TYPE_UNSIGNED (type2) | |
3612 | || TYPE_NOSIGN (type1) != TYPE_NOSIGN (type2) | |
3613 | || TYPE_VARARGS (type1) != TYPE_VARARGS (type2) | |
3614 | || TYPE_VECTOR (type1) != TYPE_VECTOR (type2) | |
3615 | || TYPE_NOTTEXT (type1) != TYPE_NOTTEXT (type2) | |
3616 | || TYPE_INSTANCE_FLAGS (type1) != TYPE_INSTANCE_FLAGS (type2) | |
3617 | || TYPE_NFIELDS (type1) != TYPE_NFIELDS (type2)) | |
894882e3 | 3618 | return false; |
ca092b61 | 3619 | |
e86ca25f | 3620 | if (!compare_maybe_null_strings (TYPE_NAME (type1), TYPE_NAME (type2))) |
894882e3 | 3621 | return false; |
ca092b61 | 3622 | if (!compare_maybe_null_strings (TYPE_NAME (type1), TYPE_NAME (type2))) |
894882e3 | 3623 | return false; |
ca092b61 DE |
3624 | |
3625 | if (TYPE_CODE (type1) == TYPE_CODE_RANGE) | |
3626 | { | |
0f59d5fc | 3627 | if (*TYPE_RANGE_DATA (type1) != *TYPE_RANGE_DATA (type2)) |
894882e3 | 3628 | return false; |
ca092b61 DE |
3629 | } |
3630 | else | |
3631 | { | |
3632 | int i; | |
3633 | ||
3634 | for (i = 0; i < TYPE_NFIELDS (type1); ++i) | |
3635 | { | |
3636 | const struct field *field1 = &TYPE_FIELD (type1, i); | |
3637 | const struct field *field2 = &TYPE_FIELD (type2, i); | |
ca092b61 DE |
3638 | |
3639 | if (FIELD_ARTIFICIAL (*field1) != FIELD_ARTIFICIAL (*field2) | |
3640 | || FIELD_BITSIZE (*field1) != FIELD_BITSIZE (*field2) | |
3641 | || FIELD_LOC_KIND (*field1) != FIELD_LOC_KIND (*field2)) | |
894882e3 | 3642 | return false; |
ca092b61 DE |
3643 | if (!compare_maybe_null_strings (FIELD_NAME (*field1), |
3644 | FIELD_NAME (*field2))) | |
894882e3 | 3645 | return false; |
ca092b61 DE |
3646 | switch (FIELD_LOC_KIND (*field1)) |
3647 | { | |
3648 | case FIELD_LOC_KIND_BITPOS: | |
3649 | if (FIELD_BITPOS (*field1) != FIELD_BITPOS (*field2)) | |
894882e3 | 3650 | return false; |
ca092b61 DE |
3651 | break; |
3652 | case FIELD_LOC_KIND_ENUMVAL: | |
3653 | if (FIELD_ENUMVAL (*field1) != FIELD_ENUMVAL (*field2)) | |
894882e3 | 3654 | return false; |
ca092b61 DE |
3655 | break; |
3656 | case FIELD_LOC_KIND_PHYSADDR: | |
3657 | if (FIELD_STATIC_PHYSADDR (*field1) | |
3658 | != FIELD_STATIC_PHYSADDR (*field2)) | |
894882e3 | 3659 | return false; |
ca092b61 DE |
3660 | break; |
3661 | case FIELD_LOC_KIND_PHYSNAME: | |
3662 | if (!compare_maybe_null_strings (FIELD_STATIC_PHYSNAME (*field1), | |
3663 | FIELD_STATIC_PHYSNAME (*field2))) | |
894882e3 | 3664 | return false; |
ca092b61 DE |
3665 | break; |
3666 | case FIELD_LOC_KIND_DWARF_BLOCK: | |
3667 | { | |
3668 | struct dwarf2_locexpr_baton *block1, *block2; | |
3669 | ||
3670 | block1 = FIELD_DWARF_BLOCK (*field1); | |
3671 | block2 = FIELD_DWARF_BLOCK (*field2); | |
3672 | if (block1->per_cu != block2->per_cu | |
3673 | || block1->size != block2->size | |
3674 | || memcmp (block1->data, block2->data, block1->size) != 0) | |
894882e3 | 3675 | return false; |
ca092b61 DE |
3676 | } |
3677 | break; | |
3678 | default: | |
3679 | internal_error (__FILE__, __LINE__, _("Unsupported field kind " | |
3680 | "%d by check_types_equal"), | |
3681 | FIELD_LOC_KIND (*field1)); | |
3682 | } | |
3683 | ||
894882e3 | 3684 | worklist->emplace_back (FIELD_TYPE (*field1), FIELD_TYPE (*field2)); |
ca092b61 DE |
3685 | } |
3686 | } | |
3687 | ||
3688 | if (TYPE_TARGET_TYPE (type1) != NULL) | |
3689 | { | |
ca092b61 | 3690 | if (TYPE_TARGET_TYPE (type2) == NULL) |
894882e3 | 3691 | return false; |
ca092b61 | 3692 | |
894882e3 TT |
3693 | worklist->emplace_back (TYPE_TARGET_TYPE (type1), |
3694 | TYPE_TARGET_TYPE (type2)); | |
ca092b61 DE |
3695 | } |
3696 | else if (TYPE_TARGET_TYPE (type2) != NULL) | |
894882e3 | 3697 | return false; |
ca092b61 | 3698 | |
894882e3 | 3699 | return true; |
ca092b61 DE |
3700 | } |
3701 | ||
894882e3 TT |
3702 | /* Check types on a worklist for equality. Returns false if any pair |
3703 | is not equal, true if they are all considered equal. */ | |
ca092b61 | 3704 | |
894882e3 TT |
3705 | static bool |
3706 | check_types_worklist (std::vector<type_equality_entry> *worklist, | |
ca092b61 DE |
3707 | struct bcache *cache) |
3708 | { | |
894882e3 | 3709 | while (!worklist->empty ()) |
ca092b61 | 3710 | { |
ca092b61 DE |
3711 | int added; |
3712 | ||
894882e3 TT |
3713 | struct type_equality_entry entry = std::move (worklist->back ()); |
3714 | worklist->pop_back (); | |
ca092b61 DE |
3715 | |
3716 | /* If the type pair has already been visited, we know it is | |
3717 | ok. */ | |
25629dfd | 3718 | cache->insert (&entry, sizeof (entry), &added); |
ca092b61 DE |
3719 | if (!added) |
3720 | continue; | |
3721 | ||
894882e3 TT |
3722 | if (!check_types_equal (entry.type1, entry.type2, worklist)) |
3723 | return false; | |
ca092b61 | 3724 | } |
7062b0a0 | 3725 | |
894882e3 | 3726 | return true; |
ca092b61 DE |
3727 | } |
3728 | ||
894882e3 TT |
3729 | /* Return true if types TYPE1 and TYPE2 are equal, as determined by a |
3730 | "deep comparison". Otherwise return false. */ | |
ca092b61 | 3731 | |
894882e3 | 3732 | bool |
ca092b61 DE |
3733 | types_deeply_equal (struct type *type1, struct type *type2) |
3734 | { | |
894882e3 | 3735 | std::vector<type_equality_entry> worklist; |
ca092b61 DE |
3736 | |
3737 | gdb_assert (type1 != NULL && type2 != NULL); | |
3738 | ||
3739 | /* Early exit for the simple case. */ | |
3740 | if (type1 == type2) | |
894882e3 | 3741 | return true; |
ca092b61 | 3742 | |
25629dfd | 3743 | struct bcache cache (nullptr, nullptr); |
894882e3 | 3744 | worklist.emplace_back (type1, type2); |
25629dfd | 3745 | return check_types_worklist (&worklist, &cache); |
ca092b61 | 3746 | } |
3f2f83dd KB |
3747 | |
3748 | /* Allocated status of type TYPE. Return zero if type TYPE is allocated. | |
3749 | Otherwise return one. */ | |
3750 | ||
3751 | int | |
3752 | type_not_allocated (const struct type *type) | |
3753 | { | |
3754 | struct dynamic_prop *prop = TYPE_ALLOCATED_PROP (type); | |
3755 | ||
3756 | return (prop && TYPE_DYN_PROP_KIND (prop) == PROP_CONST | |
3757 | && !TYPE_DYN_PROP_ADDR (prop)); | |
3758 | } | |
3759 | ||
3760 | /* Associated status of type TYPE. Return zero if type TYPE is associated. | |
3761 | Otherwise return one. */ | |
3762 | ||
3763 | int | |
3764 | type_not_associated (const struct type *type) | |
3765 | { | |
3766 | struct dynamic_prop *prop = TYPE_ASSOCIATED_PROP (type); | |
3767 | ||
3768 | return (prop && TYPE_DYN_PROP_KIND (prop) == PROP_CONST | |
3769 | && !TYPE_DYN_PROP_ADDR (prop)); | |
3770 | } | |
9293fc63 SM |
3771 | |
3772 | /* rank_one_type helper for when PARM's type code is TYPE_CODE_PTR. */ | |
3773 | ||
3774 | static struct rank | |
3775 | rank_one_type_parm_ptr (struct type *parm, struct type *arg, struct value *value) | |
3776 | { | |
3777 | struct rank rank = {0,0}; | |
3778 | ||
3779 | switch (TYPE_CODE (arg)) | |
3780 | { | |
3781 | case TYPE_CODE_PTR: | |
3782 | ||
3783 | /* Allowed pointer conversions are: | |
3784 | (a) pointer to void-pointer conversion. */ | |
3785 | if (TYPE_CODE (TYPE_TARGET_TYPE (parm)) == TYPE_CODE_VOID) | |
3786 | return VOID_PTR_CONVERSION_BADNESS; | |
3787 | ||
3788 | /* (b) pointer to ancestor-pointer conversion. */ | |
3789 | rank.subrank = distance_to_ancestor (TYPE_TARGET_TYPE (parm), | |
3790 | TYPE_TARGET_TYPE (arg), | |
3791 | 0); | |
3792 | if (rank.subrank >= 0) | |
3793 | return sum_ranks (BASE_PTR_CONVERSION_BADNESS, rank); | |
3794 | ||
3795 | return INCOMPATIBLE_TYPE_BADNESS; | |
3796 | case TYPE_CODE_ARRAY: | |
3797 | { | |
3798 | struct type *t1 = TYPE_TARGET_TYPE (parm); | |
3799 | struct type *t2 = TYPE_TARGET_TYPE (arg); | |
3800 | ||
3801 | if (types_equal (t1, t2)) | |
3802 | { | |
3803 | /* Make sure they are CV equal. */ | |
3804 | if (TYPE_CONST (t1) != TYPE_CONST (t2)) | |
3805 | rank.subrank |= CV_CONVERSION_CONST; | |
3806 | if (TYPE_VOLATILE (t1) != TYPE_VOLATILE (t2)) | |
3807 | rank.subrank |= CV_CONVERSION_VOLATILE; | |
3808 | if (rank.subrank != 0) | |
3809 | return sum_ranks (CV_CONVERSION_BADNESS, rank); | |
3810 | return EXACT_MATCH_BADNESS; | |
3811 | } | |
3812 | return INCOMPATIBLE_TYPE_BADNESS; | |
3813 | } | |
3814 | case TYPE_CODE_FUNC: | |
3815 | return rank_one_type (TYPE_TARGET_TYPE (parm), arg, NULL); | |
3816 | case TYPE_CODE_INT: | |
3817 | if (value != NULL && TYPE_CODE (value_type (value)) == TYPE_CODE_INT) | |
3818 | { | |
3819 | if (value_as_long (value) == 0) | |
3820 | { | |
3821 | /* Null pointer conversion: allow it to be cast to a pointer. | |
3822 | [4.10.1 of C++ standard draft n3290] */ | |
3823 | return NULL_POINTER_CONVERSION_BADNESS; | |
3824 | } | |
3825 | else | |
3826 | { | |
3827 | /* If type checking is disabled, allow the conversion. */ | |
3828 | if (!strict_type_checking) | |
3829 | return NS_INTEGER_POINTER_CONVERSION_BADNESS; | |
3830 | } | |
3831 | } | |
3832 | /* fall through */ | |
3833 | case TYPE_CODE_ENUM: | |
3834 | case TYPE_CODE_FLAGS: | |
3835 | case TYPE_CODE_CHAR: | |
3836 | case TYPE_CODE_RANGE: | |
3837 | case TYPE_CODE_BOOL: | |
3838 | default: | |
3839 | return INCOMPATIBLE_TYPE_BADNESS; | |
3840 | } | |
3841 | } | |
3842 | ||
b9f4512f SM |
3843 | /* rank_one_type helper for when PARM's type code is TYPE_CODE_ARRAY. */ |
3844 | ||
3845 | static struct rank | |
3846 | rank_one_type_parm_array (struct type *parm, struct type *arg, struct value *value) | |
3847 | { | |
3848 | switch (TYPE_CODE (arg)) | |
3849 | { | |
3850 | case TYPE_CODE_PTR: | |
3851 | case TYPE_CODE_ARRAY: | |
3852 | return rank_one_type (TYPE_TARGET_TYPE (parm), | |
3853 | TYPE_TARGET_TYPE (arg), NULL); | |
3854 | default: | |
3855 | return INCOMPATIBLE_TYPE_BADNESS; | |
3856 | } | |
3857 | } | |
3858 | ||
f1f832d6 SM |
3859 | /* rank_one_type helper for when PARM's type code is TYPE_CODE_FUNC. */ |
3860 | ||
3861 | static struct rank | |
3862 | rank_one_type_parm_func (struct type *parm, struct type *arg, struct value *value) | |
3863 | { | |
3864 | switch (TYPE_CODE (arg)) | |
3865 | { | |
3866 | case TYPE_CODE_PTR: /* funcptr -> func */ | |
3867 | return rank_one_type (parm, TYPE_TARGET_TYPE (arg), NULL); | |
3868 | default: | |
3869 | return INCOMPATIBLE_TYPE_BADNESS; | |
3870 | } | |
3871 | } | |
3872 | ||
34910087 SM |
3873 | /* rank_one_type helper for when PARM's type code is TYPE_CODE_INT. */ |
3874 | ||
3875 | static struct rank | |
3876 | rank_one_type_parm_int (struct type *parm, struct type *arg, struct value *value) | |
3877 | { | |
3878 | switch (TYPE_CODE (arg)) | |
3879 | { | |
3880 | case TYPE_CODE_INT: | |
3881 | if (TYPE_LENGTH (arg) == TYPE_LENGTH (parm)) | |
3882 | { | |
3883 | /* Deal with signed, unsigned, and plain chars and | |
3884 | signed and unsigned ints. */ | |
3885 | if (TYPE_NOSIGN (parm)) | |
3886 | { | |
3887 | /* This case only for character types. */ | |
3888 | if (TYPE_NOSIGN (arg)) | |
3889 | return EXACT_MATCH_BADNESS; /* plain char -> plain char */ | |
3890 | else /* signed/unsigned char -> plain char */ | |
3891 | return INTEGER_CONVERSION_BADNESS; | |
3892 | } | |
3893 | else if (TYPE_UNSIGNED (parm)) | |
3894 | { | |
3895 | if (TYPE_UNSIGNED (arg)) | |
3896 | { | |
3897 | /* unsigned int -> unsigned int, or | |
3898 | unsigned long -> unsigned long */ | |
3899 | if (integer_types_same_name_p (TYPE_NAME (parm), | |
3900 | TYPE_NAME (arg))) | |
3901 | return EXACT_MATCH_BADNESS; | |
3902 | else if (integer_types_same_name_p (TYPE_NAME (arg), | |
3903 | "int") | |
3904 | && integer_types_same_name_p (TYPE_NAME (parm), | |
3905 | "long")) | |
3906 | /* unsigned int -> unsigned long */ | |
3907 | return INTEGER_PROMOTION_BADNESS; | |
3908 | else | |
3909 | /* unsigned long -> unsigned int */ | |
3910 | return INTEGER_CONVERSION_BADNESS; | |
3911 | } | |
3912 | else | |
3913 | { | |
3914 | if (integer_types_same_name_p (TYPE_NAME (arg), | |
3915 | "long") | |
3916 | && integer_types_same_name_p (TYPE_NAME (parm), | |
3917 | "int")) | |
3918 | /* signed long -> unsigned int */ | |
3919 | return INTEGER_CONVERSION_BADNESS; | |
3920 | else | |
3921 | /* signed int/long -> unsigned int/long */ | |
3922 | return INTEGER_CONVERSION_BADNESS; | |
3923 | } | |
3924 | } | |
3925 | else if (!TYPE_NOSIGN (arg) && !TYPE_UNSIGNED (arg)) | |
3926 | { | |
3927 | if (integer_types_same_name_p (TYPE_NAME (parm), | |
3928 | TYPE_NAME (arg))) | |
3929 | return EXACT_MATCH_BADNESS; | |
3930 | else if (integer_types_same_name_p (TYPE_NAME (arg), | |
3931 | "int") | |
3932 | && integer_types_same_name_p (TYPE_NAME (parm), | |
3933 | "long")) | |
3934 | return INTEGER_PROMOTION_BADNESS; | |
3935 | else | |
3936 | return INTEGER_CONVERSION_BADNESS; | |
3937 | } | |
3938 | else | |
3939 | return INTEGER_CONVERSION_BADNESS; | |
3940 | } | |
3941 | else if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm)) | |
3942 | return INTEGER_PROMOTION_BADNESS; | |
3943 | else | |
3944 | return INTEGER_CONVERSION_BADNESS; | |
3945 | case TYPE_CODE_ENUM: | |
3946 | case TYPE_CODE_FLAGS: | |
3947 | case TYPE_CODE_CHAR: | |
3948 | case TYPE_CODE_RANGE: | |
3949 | case TYPE_CODE_BOOL: | |
3950 | if (TYPE_DECLARED_CLASS (arg)) | |
3951 | return INCOMPATIBLE_TYPE_BADNESS; | |
3952 | return INTEGER_PROMOTION_BADNESS; | |
3953 | case TYPE_CODE_FLT: | |
3954 | return INT_FLOAT_CONVERSION_BADNESS; | |
3955 | case TYPE_CODE_PTR: | |
3956 | return NS_POINTER_CONVERSION_BADNESS; | |
3957 | default: | |
3958 | return INCOMPATIBLE_TYPE_BADNESS; | |
3959 | } | |
3960 | } | |
3961 | ||
793cd1d2 SM |
3962 | /* rank_one_type helper for when PARM's type code is TYPE_CODE_ENUM. */ |
3963 | ||
3964 | static struct rank | |
3965 | rank_one_type_parm_enum (struct type *parm, struct type *arg, struct value *value) | |
3966 | { | |
3967 | switch (TYPE_CODE (arg)) | |
3968 | { | |
3969 | case TYPE_CODE_INT: | |
3970 | case TYPE_CODE_CHAR: | |
3971 | case TYPE_CODE_RANGE: | |
3972 | case TYPE_CODE_BOOL: | |
3973 | case TYPE_CODE_ENUM: | |
3974 | if (TYPE_DECLARED_CLASS (parm) || TYPE_DECLARED_CLASS (arg)) | |
3975 | return INCOMPATIBLE_TYPE_BADNESS; | |
3976 | return INTEGER_CONVERSION_BADNESS; | |
3977 | case TYPE_CODE_FLT: | |
3978 | return INT_FLOAT_CONVERSION_BADNESS; | |
3979 | default: | |
3980 | return INCOMPATIBLE_TYPE_BADNESS; | |
3981 | } | |
3982 | } | |
3983 | ||
41ea4728 SM |
3984 | /* rank_one_type helper for when PARM's type code is TYPE_CODE_CHAR. */ |
3985 | ||
3986 | static struct rank | |
3987 | rank_one_type_parm_char (struct type *parm, struct type *arg, struct value *value) | |
3988 | { | |
3989 | switch (TYPE_CODE (arg)) | |
3990 | { | |
3991 | case TYPE_CODE_RANGE: | |
3992 | case TYPE_CODE_BOOL: | |
3993 | case TYPE_CODE_ENUM: | |
3994 | if (TYPE_DECLARED_CLASS (arg)) | |
3995 | return INCOMPATIBLE_TYPE_BADNESS; | |
3996 | return INTEGER_CONVERSION_BADNESS; | |
3997 | case TYPE_CODE_FLT: | |
3998 | return INT_FLOAT_CONVERSION_BADNESS; | |
3999 | case TYPE_CODE_INT: | |
4000 | if (TYPE_LENGTH (arg) > TYPE_LENGTH (parm)) | |
4001 | return INTEGER_CONVERSION_BADNESS; | |
4002 | else if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm)) | |
4003 | return INTEGER_PROMOTION_BADNESS; | |
4004 | /* fall through */ | |
4005 | case TYPE_CODE_CHAR: | |
4006 | /* Deal with signed, unsigned, and plain chars for C++ and | |
4007 | with int cases falling through from previous case. */ | |
4008 | if (TYPE_NOSIGN (parm)) | |
4009 | { | |
4010 | if (TYPE_NOSIGN (arg)) | |
4011 | return EXACT_MATCH_BADNESS; | |
4012 | else | |
4013 | return INTEGER_CONVERSION_BADNESS; | |
4014 | } | |
4015 | else if (TYPE_UNSIGNED (parm)) | |
4016 | { | |
4017 | if (TYPE_UNSIGNED (arg)) | |
4018 | return EXACT_MATCH_BADNESS; | |
4019 | else | |
4020 | return INTEGER_PROMOTION_BADNESS; | |
4021 | } | |
4022 | else if (!TYPE_NOSIGN (arg) && !TYPE_UNSIGNED (arg)) | |
4023 | return EXACT_MATCH_BADNESS; | |
4024 | else | |
4025 | return INTEGER_CONVERSION_BADNESS; | |
4026 | default: | |
4027 | return INCOMPATIBLE_TYPE_BADNESS; | |
4028 | } | |
4029 | } | |
4030 | ||
0dd322dc SM |
4031 | /* rank_one_type helper for when PARM's type code is TYPE_CODE_RANGE. */ |
4032 | ||
4033 | static struct rank | |
4034 | rank_one_type_parm_range (struct type *parm, struct type *arg, struct value *value) | |
4035 | { | |
4036 | switch (TYPE_CODE (arg)) | |
4037 | { | |
4038 | case TYPE_CODE_INT: | |
4039 | case TYPE_CODE_CHAR: | |
4040 | case TYPE_CODE_RANGE: | |
4041 | case TYPE_CODE_BOOL: | |
4042 | case TYPE_CODE_ENUM: | |
4043 | return INTEGER_CONVERSION_BADNESS; | |
4044 | case TYPE_CODE_FLT: | |
4045 | return INT_FLOAT_CONVERSION_BADNESS; | |
4046 | default: | |
4047 | return INCOMPATIBLE_TYPE_BADNESS; | |
4048 | } | |
4049 | } | |
4050 | ||
2c509035 SM |
4051 | /* rank_one_type helper for when PARM's type code is TYPE_CODE_BOOL. */ |
4052 | ||
4053 | static struct rank | |
4054 | rank_one_type_parm_bool (struct type *parm, struct type *arg, struct value *value) | |
4055 | { | |
4056 | switch (TYPE_CODE (arg)) | |
4057 | { | |
4058 | /* n3290 draft, section 4.12.1 (conv.bool): | |
4059 | ||
4060 | "A prvalue of arithmetic, unscoped enumeration, pointer, or | |
4061 | pointer to member type can be converted to a prvalue of type | |
4062 | bool. A zero value, null pointer value, or null member pointer | |
4063 | value is converted to false; any other value is converted to | |
4064 | true. A prvalue of type std::nullptr_t can be converted to a | |
4065 | prvalue of type bool; the resulting value is false." */ | |
4066 | case TYPE_CODE_INT: | |
4067 | case TYPE_CODE_CHAR: | |
4068 | case TYPE_CODE_ENUM: | |
4069 | case TYPE_CODE_FLT: | |
4070 | case TYPE_CODE_MEMBERPTR: | |
4071 | case TYPE_CODE_PTR: | |
4072 | return BOOL_CONVERSION_BADNESS; | |
4073 | case TYPE_CODE_RANGE: | |
4074 | return INCOMPATIBLE_TYPE_BADNESS; | |
4075 | case TYPE_CODE_BOOL: | |
4076 | return EXACT_MATCH_BADNESS; | |
4077 | default: | |
4078 | return INCOMPATIBLE_TYPE_BADNESS; | |
4079 | } | |
4080 | } | |
4081 | ||
7f17b20d SM |
4082 | /* rank_one_type helper for when PARM's type code is TYPE_CODE_FLOAT. */ |
4083 | ||
4084 | static struct rank | |
4085 | rank_one_type_parm_float (struct type *parm, struct type *arg, struct value *value) | |
4086 | { | |
4087 | switch (TYPE_CODE (arg)) | |
4088 | { | |
4089 | case TYPE_CODE_FLT: | |
4090 | if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm)) | |
4091 | return FLOAT_PROMOTION_BADNESS; | |
4092 | else if (TYPE_LENGTH (arg) == TYPE_LENGTH (parm)) | |
4093 | return EXACT_MATCH_BADNESS; | |
4094 | else | |
4095 | return FLOAT_CONVERSION_BADNESS; | |
4096 | case TYPE_CODE_INT: | |
4097 | case TYPE_CODE_BOOL: | |
4098 | case TYPE_CODE_ENUM: | |
4099 | case TYPE_CODE_RANGE: | |
4100 | case TYPE_CODE_CHAR: | |
4101 | return INT_FLOAT_CONVERSION_BADNESS; | |
4102 | default: | |
4103 | return INCOMPATIBLE_TYPE_BADNESS; | |
4104 | } | |
4105 | } | |
4106 | ||
2598a94b SM |
4107 | /* rank_one_type helper for when PARM's type code is TYPE_CODE_COMPLEX. */ |
4108 | ||
4109 | static struct rank | |
4110 | rank_one_type_parm_complex (struct type *parm, struct type *arg, struct value *value) | |
4111 | { | |
4112 | switch (TYPE_CODE (arg)) | |
4113 | { /* Strictly not needed for C++, but... */ | |
4114 | case TYPE_CODE_FLT: | |
4115 | return FLOAT_PROMOTION_BADNESS; | |
4116 | case TYPE_CODE_COMPLEX: | |
4117 | return EXACT_MATCH_BADNESS; | |
4118 | default: | |
4119 | return INCOMPATIBLE_TYPE_BADNESS; | |
4120 | } | |
4121 | } | |
4122 | ||
595f96a9 SM |
4123 | /* rank_one_type helper for when PARM's type code is TYPE_CODE_STRUCT. */ |
4124 | ||
4125 | static struct rank | |
4126 | rank_one_type_parm_struct (struct type *parm, struct type *arg, struct value *value) | |
4127 | { | |
4128 | struct rank rank = {0, 0}; | |
4129 | ||
4130 | switch (TYPE_CODE (arg)) | |
4131 | { | |
4132 | case TYPE_CODE_STRUCT: | |
4133 | /* Check for derivation */ | |
4134 | rank.subrank = distance_to_ancestor (parm, arg, 0); | |
4135 | if (rank.subrank >= 0) | |
4136 | return sum_ranks (BASE_CONVERSION_BADNESS, rank); | |
4137 | /* fall through */ | |
4138 | default: | |
4139 | return INCOMPATIBLE_TYPE_BADNESS; | |
4140 | } | |
4141 | } | |
4142 | ||
f09ce22d SM |
4143 | /* rank_one_type helper for when PARM's type code is TYPE_CODE_SET. */ |
4144 | ||
4145 | static struct rank | |
4146 | rank_one_type_parm_set (struct type *parm, struct type *arg, struct value *value) | |
4147 | { | |
4148 | switch (TYPE_CODE (arg)) | |
4149 | { | |
4150 | /* Not in C++ */ | |
4151 | case TYPE_CODE_SET: | |
4152 | return rank_one_type (TYPE_FIELD_TYPE (parm, 0), | |
4153 | TYPE_FIELD_TYPE (arg, 0), NULL); | |
4154 | default: | |
4155 | return INCOMPATIBLE_TYPE_BADNESS; | |
4156 | } | |
4157 | } | |
4158 | ||
c906108c SS |
4159 | /* Compare one type (PARM) for compatibility with another (ARG). |
4160 | * PARM is intended to be the parameter type of a function; and | |
4161 | * ARG is the supplied argument's type. This function tests if | |
4162 | * the latter can be converted to the former. | |
da096638 | 4163 | * VALUE is the argument's value or NULL if none (or called recursively) |
c906108c SS |
4164 | * |
4165 | * Return 0 if they are identical types; | |
4166 | * Otherwise, return an integer which corresponds to how compatible | |
7ba81444 MS |
4167 | * PARM is to ARG. The higher the return value, the worse the match. |
4168 | * Generally the "bad" conversions are all uniformly assigned a 100. */ | |
c906108c | 4169 | |
6403aeea | 4170 | struct rank |
da096638 | 4171 | rank_one_type (struct type *parm, struct type *arg, struct value *value) |
c906108c | 4172 | { |
a9d5ef47 | 4173 | struct rank rank = {0,0}; |
7062b0a0 | 4174 | |
c906108c SS |
4175 | /* Resolve typedefs */ |
4176 | if (TYPE_CODE (parm) == TYPE_CODE_TYPEDEF) | |
4177 | parm = check_typedef (parm); | |
4178 | if (TYPE_CODE (arg) == TYPE_CODE_TYPEDEF) | |
4179 | arg = check_typedef (arg); | |
4180 | ||
e15c3eb4 | 4181 | if (TYPE_IS_REFERENCE (parm) && value != NULL) |
15c0a2a9 | 4182 | { |
e15c3eb4 KS |
4183 | if (VALUE_LVAL (value) == not_lval) |
4184 | { | |
4185 | /* Rvalues should preferably bind to rvalue references or const | |
4186 | lvalue references. */ | |
4187 | if (TYPE_CODE (parm) == TYPE_CODE_RVALUE_REF) | |
4188 | rank.subrank = REFERENCE_CONVERSION_RVALUE; | |
4189 | else if (TYPE_CONST (TYPE_TARGET_TYPE (parm))) | |
4190 | rank.subrank = REFERENCE_CONVERSION_CONST_LVALUE; | |
4191 | else | |
4192 | return INCOMPATIBLE_TYPE_BADNESS; | |
4193 | return sum_ranks (rank, REFERENCE_CONVERSION_BADNESS); | |
4194 | } | |
4195 | else | |
4196 | { | |
4197 | /* Lvalues should prefer lvalue overloads. */ | |
4198 | if (TYPE_CODE (parm) == TYPE_CODE_RVALUE_REF) | |
4199 | { | |
4200 | rank.subrank = REFERENCE_CONVERSION_RVALUE; | |
4201 | return sum_ranks (rank, REFERENCE_CONVERSION_BADNESS); | |
4202 | } | |
4203 | } | |
15c0a2a9 AV |
4204 | } |
4205 | ||
4206 | if (types_equal (parm, arg)) | |
15c0a2a9 | 4207 | { |
e15c3eb4 KS |
4208 | struct type *t1 = parm; |
4209 | struct type *t2 = arg; | |
15c0a2a9 | 4210 | |
e15c3eb4 KS |
4211 | /* For pointers and references, compare target type. */ |
4212 | if (TYPE_CODE (parm) == TYPE_CODE_PTR || TYPE_IS_REFERENCE (parm)) | |
4213 | { | |
4214 | t1 = TYPE_TARGET_TYPE (parm); | |
4215 | t2 = TYPE_TARGET_TYPE (arg); | |
4216 | } | |
15c0a2a9 | 4217 | |
e15c3eb4 KS |
4218 | /* Make sure they are CV equal, too. */ |
4219 | if (TYPE_CONST (t1) != TYPE_CONST (t2)) | |
4220 | rank.subrank |= CV_CONVERSION_CONST; | |
4221 | if (TYPE_VOLATILE (t1) != TYPE_VOLATILE (t2)) | |
4222 | rank.subrank |= CV_CONVERSION_VOLATILE; | |
4223 | if (rank.subrank != 0) | |
4224 | return sum_ranks (CV_CONVERSION_BADNESS, rank); | |
4225 | return EXACT_MATCH_BADNESS; | |
15c0a2a9 AV |
4226 | } |
4227 | ||
db577aea | 4228 | /* See through references, since we can almost make non-references |
7ba81444 | 4229 | references. */ |
aa006118 AV |
4230 | |
4231 | if (TYPE_IS_REFERENCE (arg)) | |
da096638 | 4232 | return (sum_ranks (rank_one_type (parm, TYPE_TARGET_TYPE (arg), NULL), |
6403aeea | 4233 | REFERENCE_CONVERSION_BADNESS)); |
aa006118 | 4234 | if (TYPE_IS_REFERENCE (parm)) |
da096638 | 4235 | return (sum_ranks (rank_one_type (TYPE_TARGET_TYPE (parm), arg, NULL), |
6403aeea | 4236 | REFERENCE_CONVERSION_BADNESS)); |
5d161b24 | 4237 | if (overload_debug) |
7ba81444 MS |
4238 | /* Debugging only. */ |
4239 | fprintf_filtered (gdb_stderr, | |
4240 | "------ Arg is %s [%d], parm is %s [%d]\n", | |
4241 | TYPE_NAME (arg), TYPE_CODE (arg), | |
4242 | TYPE_NAME (parm), TYPE_CODE (parm)); | |
c906108c | 4243 | |
0963b4bd | 4244 | /* x -> y means arg of type x being supplied for parameter of type y. */ |
c906108c SS |
4245 | |
4246 | switch (TYPE_CODE (parm)) | |
4247 | { | |
c5aa993b | 4248 | case TYPE_CODE_PTR: |
9293fc63 | 4249 | return rank_one_type_parm_ptr (parm, arg, value); |
c5aa993b | 4250 | case TYPE_CODE_ARRAY: |
b9f4512f | 4251 | return rank_one_type_parm_array (parm, arg, value); |
c5aa993b | 4252 | case TYPE_CODE_FUNC: |
f1f832d6 | 4253 | return rank_one_type_parm_func (parm, arg, value); |
c5aa993b | 4254 | case TYPE_CODE_INT: |
34910087 | 4255 | return rank_one_type_parm_int (parm, arg, value); |
c5aa993b | 4256 | case TYPE_CODE_ENUM: |
793cd1d2 | 4257 | return rank_one_type_parm_enum (parm, arg, value); |
c5aa993b | 4258 | case TYPE_CODE_CHAR: |
41ea4728 | 4259 | return rank_one_type_parm_char (parm, arg, value); |
c5aa993b | 4260 | case TYPE_CODE_RANGE: |
0dd322dc | 4261 | return rank_one_type_parm_range (parm, arg, value); |
c5aa993b | 4262 | case TYPE_CODE_BOOL: |
2c509035 | 4263 | return rank_one_type_parm_bool (parm, arg, value); |
c5aa993b | 4264 | case TYPE_CODE_FLT: |
7f17b20d | 4265 | return rank_one_type_parm_float (parm, arg, value); |
c5aa993b | 4266 | case TYPE_CODE_COMPLEX: |
2598a94b | 4267 | return rank_one_type_parm_complex (parm, arg, value); |
c5aa993b | 4268 | case TYPE_CODE_STRUCT: |
595f96a9 | 4269 | return rank_one_type_parm_struct (parm, arg, value); |
c5aa993b | 4270 | case TYPE_CODE_SET: |
f09ce22d | 4271 | return rank_one_type_parm_set (parm, arg, value); |
c5aa993b JM |
4272 | default: |
4273 | return INCOMPATIBLE_TYPE_BADNESS; | |
4274 | } /* switch (TYPE_CODE (arg)) */ | |
c906108c SS |
4275 | } |
4276 | ||
0963b4bd | 4277 | /* End of functions for overload resolution. */ |
5212577a DE |
4278 | \f |
4279 | /* Routines to pretty-print types. */ | |
c906108c | 4280 | |
c906108c | 4281 | static void |
fba45db2 | 4282 | print_bit_vector (B_TYPE *bits, int nbits) |
c906108c SS |
4283 | { |
4284 | int bitno; | |
4285 | ||
4286 | for (bitno = 0; bitno < nbits; bitno++) | |
4287 | { | |
4288 | if ((bitno % 8) == 0) | |
4289 | { | |
4290 | puts_filtered (" "); | |
4291 | } | |
4292 | if (B_TST (bits, bitno)) | |
a3f17187 | 4293 | printf_filtered (("1")); |
c906108c | 4294 | else |
a3f17187 | 4295 | printf_filtered (("0")); |
c906108c SS |
4296 | } |
4297 | } | |
4298 | ||
ad2f7632 | 4299 | /* Note the first arg should be the "this" pointer, we may not want to |
7ba81444 MS |
4300 | include it since we may get into a infinitely recursive |
4301 | situation. */ | |
c906108c SS |
4302 | |
4303 | static void | |
4c9e8482 | 4304 | print_args (struct field *args, int nargs, int spaces) |
c906108c SS |
4305 | { |
4306 | if (args != NULL) | |
4307 | { | |
ad2f7632 DJ |
4308 | int i; |
4309 | ||
4310 | for (i = 0; i < nargs; i++) | |
4c9e8482 DE |
4311 | { |
4312 | printfi_filtered (spaces, "[%d] name '%s'\n", i, | |
4313 | args[i].name != NULL ? args[i].name : "<NULL>"); | |
4314 | recursive_dump_type (args[i].type, spaces + 2); | |
4315 | } | |
c906108c SS |
4316 | } |
4317 | } | |
4318 | ||
d6a843b5 JK |
4319 | int |
4320 | field_is_static (struct field *f) | |
4321 | { | |
4322 | /* "static" fields are the fields whose location is not relative | |
4323 | to the address of the enclosing struct. It would be nice to | |
4324 | have a dedicated flag that would be set for static fields when | |
4325 | the type is being created. But in practice, checking the field | |
254e6b9e | 4326 | loc_kind should give us an accurate answer. */ |
d6a843b5 JK |
4327 | return (FIELD_LOC_KIND (*f) == FIELD_LOC_KIND_PHYSNAME |
4328 | || FIELD_LOC_KIND (*f) == FIELD_LOC_KIND_PHYSADDR); | |
4329 | } | |
4330 | ||
c906108c | 4331 | static void |
fba45db2 | 4332 | dump_fn_fieldlists (struct type *type, int spaces) |
c906108c SS |
4333 | { |
4334 | int method_idx; | |
4335 | int overload_idx; | |
4336 | struct fn_field *f; | |
4337 | ||
4338 | printfi_filtered (spaces, "fn_fieldlists "); | |
d4f3574e | 4339 | gdb_print_host_address (TYPE_FN_FIELDLISTS (type), gdb_stdout); |
c906108c SS |
4340 | printf_filtered ("\n"); |
4341 | for (method_idx = 0; method_idx < TYPE_NFN_FIELDS (type); method_idx++) | |
4342 | { | |
4343 | f = TYPE_FN_FIELDLIST1 (type, method_idx); | |
4344 | printfi_filtered (spaces + 2, "[%d] name '%s' (", | |
4345 | method_idx, | |
4346 | TYPE_FN_FIELDLIST_NAME (type, method_idx)); | |
d4f3574e SS |
4347 | gdb_print_host_address (TYPE_FN_FIELDLIST_NAME (type, method_idx), |
4348 | gdb_stdout); | |
a3f17187 | 4349 | printf_filtered (_(") length %d\n"), |
c906108c SS |
4350 | TYPE_FN_FIELDLIST_LENGTH (type, method_idx)); |
4351 | for (overload_idx = 0; | |
4352 | overload_idx < TYPE_FN_FIELDLIST_LENGTH (type, method_idx); | |
4353 | overload_idx++) | |
4354 | { | |
4355 | printfi_filtered (spaces + 4, "[%d] physname '%s' (", | |
4356 | overload_idx, | |
4357 | TYPE_FN_FIELD_PHYSNAME (f, overload_idx)); | |
d4f3574e SS |
4358 | gdb_print_host_address (TYPE_FN_FIELD_PHYSNAME (f, overload_idx), |
4359 | gdb_stdout); | |
c906108c SS |
4360 | printf_filtered (")\n"); |
4361 | printfi_filtered (spaces + 8, "type "); | |
7ba81444 MS |
4362 | gdb_print_host_address (TYPE_FN_FIELD_TYPE (f, overload_idx), |
4363 | gdb_stdout); | |
c906108c SS |
4364 | printf_filtered ("\n"); |
4365 | ||
4366 | recursive_dump_type (TYPE_FN_FIELD_TYPE (f, overload_idx), | |
4367 | spaces + 8 + 2); | |
4368 | ||
4369 | printfi_filtered (spaces + 8, "args "); | |
7ba81444 MS |
4370 | gdb_print_host_address (TYPE_FN_FIELD_ARGS (f, overload_idx), |
4371 | gdb_stdout); | |
c906108c | 4372 | printf_filtered ("\n"); |
4c9e8482 DE |
4373 | print_args (TYPE_FN_FIELD_ARGS (f, overload_idx), |
4374 | TYPE_NFIELDS (TYPE_FN_FIELD_TYPE (f, overload_idx)), | |
4375 | spaces + 8 + 2); | |
c906108c | 4376 | printfi_filtered (spaces + 8, "fcontext "); |
d4f3574e SS |
4377 | gdb_print_host_address (TYPE_FN_FIELD_FCONTEXT (f, overload_idx), |
4378 | gdb_stdout); | |
c906108c SS |
4379 | printf_filtered ("\n"); |
4380 | ||
4381 | printfi_filtered (spaces + 8, "is_const %d\n", | |
4382 | TYPE_FN_FIELD_CONST (f, overload_idx)); | |
4383 | printfi_filtered (spaces + 8, "is_volatile %d\n", | |
4384 | TYPE_FN_FIELD_VOLATILE (f, overload_idx)); | |
4385 | printfi_filtered (spaces + 8, "is_private %d\n", | |
4386 | TYPE_FN_FIELD_PRIVATE (f, overload_idx)); | |
4387 | printfi_filtered (spaces + 8, "is_protected %d\n", | |
4388 | TYPE_FN_FIELD_PROTECTED (f, overload_idx)); | |
4389 | printfi_filtered (spaces + 8, "is_stub %d\n", | |
4390 | TYPE_FN_FIELD_STUB (f, overload_idx)); | |
4391 | printfi_filtered (spaces + 8, "voffset %u\n", | |
4392 | TYPE_FN_FIELD_VOFFSET (f, overload_idx)); | |
4393 | } | |
4394 | } | |
4395 | } | |
4396 | ||
4397 | static void | |
fba45db2 | 4398 | print_cplus_stuff (struct type *type, int spaces) |
c906108c | 4399 | { |
ae6ae975 DE |
4400 | printfi_filtered (spaces, "vptr_fieldno %d\n", TYPE_VPTR_FIELDNO (type)); |
4401 | printfi_filtered (spaces, "vptr_basetype "); | |
4402 | gdb_print_host_address (TYPE_VPTR_BASETYPE (type), gdb_stdout); | |
4403 | puts_filtered ("\n"); | |
4404 | if (TYPE_VPTR_BASETYPE (type) != NULL) | |
4405 | recursive_dump_type (TYPE_VPTR_BASETYPE (type), spaces + 2); | |
4406 | ||
c906108c SS |
4407 | printfi_filtered (spaces, "n_baseclasses %d\n", |
4408 | TYPE_N_BASECLASSES (type)); | |
4409 | printfi_filtered (spaces, "nfn_fields %d\n", | |
4410 | TYPE_NFN_FIELDS (type)); | |
c906108c SS |
4411 | if (TYPE_N_BASECLASSES (type) > 0) |
4412 | { | |
4413 | printfi_filtered (spaces, "virtual_field_bits (%d bits at *", | |
4414 | TYPE_N_BASECLASSES (type)); | |
7ba81444 MS |
4415 | gdb_print_host_address (TYPE_FIELD_VIRTUAL_BITS (type), |
4416 | gdb_stdout); | |
c906108c SS |
4417 | printf_filtered (")"); |
4418 | ||
4419 | print_bit_vector (TYPE_FIELD_VIRTUAL_BITS (type), | |
4420 | TYPE_N_BASECLASSES (type)); | |
4421 | puts_filtered ("\n"); | |
4422 | } | |
4423 | if (TYPE_NFIELDS (type) > 0) | |
4424 | { | |
4425 | if (TYPE_FIELD_PRIVATE_BITS (type) != NULL) | |
4426 | { | |
7ba81444 MS |
4427 | printfi_filtered (spaces, |
4428 | "private_field_bits (%d bits at *", | |
c906108c | 4429 | TYPE_NFIELDS (type)); |
7ba81444 MS |
4430 | gdb_print_host_address (TYPE_FIELD_PRIVATE_BITS (type), |
4431 | gdb_stdout); | |
c906108c SS |
4432 | printf_filtered (")"); |
4433 | print_bit_vector (TYPE_FIELD_PRIVATE_BITS (type), | |
4434 | TYPE_NFIELDS (type)); | |
4435 | puts_filtered ("\n"); | |
4436 | } | |
4437 | if (TYPE_FIELD_PROTECTED_BITS (type) != NULL) | |
4438 | { | |
7ba81444 MS |
4439 | printfi_filtered (spaces, |
4440 | "protected_field_bits (%d bits at *", | |
c906108c | 4441 | TYPE_NFIELDS (type)); |
7ba81444 MS |
4442 | gdb_print_host_address (TYPE_FIELD_PROTECTED_BITS (type), |
4443 | gdb_stdout); | |
c906108c SS |
4444 | printf_filtered (")"); |
4445 | print_bit_vector (TYPE_FIELD_PROTECTED_BITS (type), | |
4446 | TYPE_NFIELDS (type)); | |
4447 | puts_filtered ("\n"); | |
4448 | } | |
4449 | } | |
4450 | if (TYPE_NFN_FIELDS (type) > 0) | |
4451 | { | |
4452 | dump_fn_fieldlists (type, spaces); | |
4453 | } | |
4454 | } | |
4455 | ||
b4ba55a1 JB |
4456 | /* Print the contents of the TYPE's type_specific union, assuming that |
4457 | its type-specific kind is TYPE_SPECIFIC_GNAT_STUFF. */ | |
4458 | ||
4459 | static void | |
4460 | print_gnat_stuff (struct type *type, int spaces) | |
4461 | { | |
4462 | struct type *descriptive_type = TYPE_DESCRIPTIVE_TYPE (type); | |
4463 | ||
8cd00c59 PMR |
4464 | if (descriptive_type == NULL) |
4465 | printfi_filtered (spaces + 2, "no descriptive type\n"); | |
4466 | else | |
4467 | { | |
4468 | printfi_filtered (spaces + 2, "descriptive type\n"); | |
4469 | recursive_dump_type (descriptive_type, spaces + 4); | |
4470 | } | |
b4ba55a1 JB |
4471 | } |
4472 | ||
c906108c SS |
4473 | static struct obstack dont_print_type_obstack; |
4474 | ||
4475 | void | |
fba45db2 | 4476 | recursive_dump_type (struct type *type, int spaces) |
c906108c SS |
4477 | { |
4478 | int idx; | |
4479 | ||
4480 | if (spaces == 0) | |
4481 | obstack_begin (&dont_print_type_obstack, 0); | |
4482 | ||
4483 | if (TYPE_NFIELDS (type) > 0 | |
b4ba55a1 | 4484 | || (HAVE_CPLUS_STRUCT (type) && TYPE_NFN_FIELDS (type) > 0)) |
c906108c SS |
4485 | { |
4486 | struct type **first_dont_print | |
7ba81444 | 4487 | = (struct type **) obstack_base (&dont_print_type_obstack); |
c906108c | 4488 | |
7ba81444 MS |
4489 | int i = (struct type **) |
4490 | obstack_next_free (&dont_print_type_obstack) - first_dont_print; | |
c906108c SS |
4491 | |
4492 | while (--i >= 0) | |
4493 | { | |
4494 | if (type == first_dont_print[i]) | |
4495 | { | |
4496 | printfi_filtered (spaces, "type node "); | |
d4f3574e | 4497 | gdb_print_host_address (type, gdb_stdout); |
a3f17187 | 4498 | printf_filtered (_(" <same as already seen type>\n")); |
c906108c SS |
4499 | return; |
4500 | } | |
4501 | } | |
4502 | ||
4503 | obstack_ptr_grow (&dont_print_type_obstack, type); | |
4504 | } | |
4505 | ||
4506 | printfi_filtered (spaces, "type node "); | |
d4f3574e | 4507 | gdb_print_host_address (type, gdb_stdout); |
c906108c SS |
4508 | printf_filtered ("\n"); |
4509 | printfi_filtered (spaces, "name '%s' (", | |
4510 | TYPE_NAME (type) ? TYPE_NAME (type) : "<NULL>"); | |
d4f3574e | 4511 | gdb_print_host_address (TYPE_NAME (type), gdb_stdout); |
c906108c | 4512 | printf_filtered (")\n"); |
c906108c SS |
4513 | printfi_filtered (spaces, "code 0x%x ", TYPE_CODE (type)); |
4514 | switch (TYPE_CODE (type)) | |
4515 | { | |
c5aa993b JM |
4516 | case TYPE_CODE_UNDEF: |
4517 | printf_filtered ("(TYPE_CODE_UNDEF)"); | |
4518 | break; | |
4519 | case TYPE_CODE_PTR: | |
4520 | printf_filtered ("(TYPE_CODE_PTR)"); | |
4521 | break; | |
4522 | case TYPE_CODE_ARRAY: | |
4523 | printf_filtered ("(TYPE_CODE_ARRAY)"); | |
4524 | break; | |
4525 | case TYPE_CODE_STRUCT: | |
4526 | printf_filtered ("(TYPE_CODE_STRUCT)"); | |
4527 | break; | |
4528 | case TYPE_CODE_UNION: | |
4529 | printf_filtered ("(TYPE_CODE_UNION)"); | |
4530 | break; | |
4531 | case TYPE_CODE_ENUM: | |
4532 | printf_filtered ("(TYPE_CODE_ENUM)"); | |
4533 | break; | |
4f2aea11 MK |
4534 | case TYPE_CODE_FLAGS: |
4535 | printf_filtered ("(TYPE_CODE_FLAGS)"); | |
4536 | break; | |
c5aa993b JM |
4537 | case TYPE_CODE_FUNC: |
4538 | printf_filtered ("(TYPE_CODE_FUNC)"); | |
4539 | break; | |
4540 | case TYPE_CODE_INT: | |
4541 | printf_filtered ("(TYPE_CODE_INT)"); | |
4542 | break; | |
4543 | case TYPE_CODE_FLT: | |
4544 | printf_filtered ("(TYPE_CODE_FLT)"); | |
4545 | break; | |
4546 | case TYPE_CODE_VOID: | |
4547 | printf_filtered ("(TYPE_CODE_VOID)"); | |
4548 | break; | |
4549 | case TYPE_CODE_SET: | |
4550 | printf_filtered ("(TYPE_CODE_SET)"); | |
4551 | break; | |
4552 | case TYPE_CODE_RANGE: | |
4553 | printf_filtered ("(TYPE_CODE_RANGE)"); | |
4554 | break; | |
4555 | case TYPE_CODE_STRING: | |
4556 | printf_filtered ("(TYPE_CODE_STRING)"); | |
4557 | break; | |
4558 | case TYPE_CODE_ERROR: | |
4559 | printf_filtered ("(TYPE_CODE_ERROR)"); | |
4560 | break; | |
0d5de010 DJ |
4561 | case TYPE_CODE_MEMBERPTR: |
4562 | printf_filtered ("(TYPE_CODE_MEMBERPTR)"); | |
4563 | break; | |
4564 | case TYPE_CODE_METHODPTR: | |
4565 | printf_filtered ("(TYPE_CODE_METHODPTR)"); | |
c5aa993b JM |
4566 | break; |
4567 | case TYPE_CODE_METHOD: | |
4568 | printf_filtered ("(TYPE_CODE_METHOD)"); | |
4569 | break; | |
4570 | case TYPE_CODE_REF: | |
4571 | printf_filtered ("(TYPE_CODE_REF)"); | |
4572 | break; | |
4573 | case TYPE_CODE_CHAR: | |
4574 | printf_filtered ("(TYPE_CODE_CHAR)"); | |
4575 | break; | |
4576 | case TYPE_CODE_BOOL: | |
4577 | printf_filtered ("(TYPE_CODE_BOOL)"); | |
4578 | break; | |
e9e79dd9 FF |
4579 | case TYPE_CODE_COMPLEX: |
4580 | printf_filtered ("(TYPE_CODE_COMPLEX)"); | |
4581 | break; | |
c5aa993b JM |
4582 | case TYPE_CODE_TYPEDEF: |
4583 | printf_filtered ("(TYPE_CODE_TYPEDEF)"); | |
4584 | break; | |
5c4e30ca DC |
4585 | case TYPE_CODE_NAMESPACE: |
4586 | printf_filtered ("(TYPE_CODE_NAMESPACE)"); | |
4587 | break; | |
c5aa993b JM |
4588 | default: |
4589 | printf_filtered ("(UNKNOWN TYPE CODE)"); | |
4590 | break; | |
c906108c SS |
4591 | } |
4592 | puts_filtered ("\n"); | |
cc1defb1 | 4593 | printfi_filtered (spaces, "length %s\n", pulongest (TYPE_LENGTH (type))); |
e9bb382b UW |
4594 | if (TYPE_OBJFILE_OWNED (type)) |
4595 | { | |
4596 | printfi_filtered (spaces, "objfile "); | |
4597 | gdb_print_host_address (TYPE_OWNER (type).objfile, gdb_stdout); | |
4598 | } | |
4599 | else | |
4600 | { | |
4601 | printfi_filtered (spaces, "gdbarch "); | |
4602 | gdb_print_host_address (TYPE_OWNER (type).gdbarch, gdb_stdout); | |
4603 | } | |
c906108c SS |
4604 | printf_filtered ("\n"); |
4605 | printfi_filtered (spaces, "target_type "); | |
d4f3574e | 4606 | gdb_print_host_address (TYPE_TARGET_TYPE (type), gdb_stdout); |
c906108c SS |
4607 | printf_filtered ("\n"); |
4608 | if (TYPE_TARGET_TYPE (type) != NULL) | |
4609 | { | |
4610 | recursive_dump_type (TYPE_TARGET_TYPE (type), spaces + 2); | |
4611 | } | |
4612 | printfi_filtered (spaces, "pointer_type "); | |
d4f3574e | 4613 | gdb_print_host_address (TYPE_POINTER_TYPE (type), gdb_stdout); |
c906108c SS |
4614 | printf_filtered ("\n"); |
4615 | printfi_filtered (spaces, "reference_type "); | |
d4f3574e | 4616 | gdb_print_host_address (TYPE_REFERENCE_TYPE (type), gdb_stdout); |
c906108c | 4617 | printf_filtered ("\n"); |
2fdde8f8 DJ |
4618 | printfi_filtered (spaces, "type_chain "); |
4619 | gdb_print_host_address (TYPE_CHAIN (type), gdb_stdout); | |
e9e79dd9 | 4620 | printf_filtered ("\n"); |
7ba81444 MS |
4621 | printfi_filtered (spaces, "instance_flags 0x%x", |
4622 | TYPE_INSTANCE_FLAGS (type)); | |
2fdde8f8 DJ |
4623 | if (TYPE_CONST (type)) |
4624 | { | |
a9ff5f12 | 4625 | puts_filtered (" TYPE_CONST"); |
2fdde8f8 DJ |
4626 | } |
4627 | if (TYPE_VOLATILE (type)) | |
4628 | { | |
a9ff5f12 | 4629 | puts_filtered (" TYPE_VOLATILE"); |
2fdde8f8 DJ |
4630 | } |
4631 | if (TYPE_CODE_SPACE (type)) | |
4632 | { | |
a9ff5f12 | 4633 | puts_filtered (" TYPE_CODE_SPACE"); |
2fdde8f8 DJ |
4634 | } |
4635 | if (TYPE_DATA_SPACE (type)) | |
4636 | { | |
a9ff5f12 | 4637 | puts_filtered (" TYPE_DATA_SPACE"); |
2fdde8f8 | 4638 | } |
8b2dbe47 KB |
4639 | if (TYPE_ADDRESS_CLASS_1 (type)) |
4640 | { | |
a9ff5f12 | 4641 | puts_filtered (" TYPE_ADDRESS_CLASS_1"); |
8b2dbe47 KB |
4642 | } |
4643 | if (TYPE_ADDRESS_CLASS_2 (type)) | |
4644 | { | |
a9ff5f12 | 4645 | puts_filtered (" TYPE_ADDRESS_CLASS_2"); |
8b2dbe47 | 4646 | } |
06d66ee9 TT |
4647 | if (TYPE_RESTRICT (type)) |
4648 | { | |
a9ff5f12 | 4649 | puts_filtered (" TYPE_RESTRICT"); |
06d66ee9 | 4650 | } |
a2c2acaf MW |
4651 | if (TYPE_ATOMIC (type)) |
4652 | { | |
a9ff5f12 | 4653 | puts_filtered (" TYPE_ATOMIC"); |
a2c2acaf | 4654 | } |
2fdde8f8 | 4655 | puts_filtered ("\n"); |
876cecd0 TT |
4656 | |
4657 | printfi_filtered (spaces, "flags"); | |
762a036f | 4658 | if (TYPE_UNSIGNED (type)) |
c906108c | 4659 | { |
a9ff5f12 | 4660 | puts_filtered (" TYPE_UNSIGNED"); |
c906108c | 4661 | } |
762a036f FF |
4662 | if (TYPE_NOSIGN (type)) |
4663 | { | |
a9ff5f12 | 4664 | puts_filtered (" TYPE_NOSIGN"); |
762a036f FF |
4665 | } |
4666 | if (TYPE_STUB (type)) | |
c906108c | 4667 | { |
a9ff5f12 | 4668 | puts_filtered (" TYPE_STUB"); |
c906108c | 4669 | } |
762a036f FF |
4670 | if (TYPE_TARGET_STUB (type)) |
4671 | { | |
a9ff5f12 | 4672 | puts_filtered (" TYPE_TARGET_STUB"); |
762a036f | 4673 | } |
762a036f FF |
4674 | if (TYPE_PROTOTYPED (type)) |
4675 | { | |
a9ff5f12 | 4676 | puts_filtered (" TYPE_PROTOTYPED"); |
762a036f FF |
4677 | } |
4678 | if (TYPE_INCOMPLETE (type)) | |
4679 | { | |
a9ff5f12 | 4680 | puts_filtered (" TYPE_INCOMPLETE"); |
762a036f | 4681 | } |
762a036f FF |
4682 | if (TYPE_VARARGS (type)) |
4683 | { | |
a9ff5f12 | 4684 | puts_filtered (" TYPE_VARARGS"); |
762a036f | 4685 | } |
f5f8a009 EZ |
4686 | /* This is used for things like AltiVec registers on ppc. Gcc emits |
4687 | an attribute for the array type, which tells whether or not we | |
4688 | have a vector, instead of a regular array. */ | |
4689 | if (TYPE_VECTOR (type)) | |
4690 | { | |
a9ff5f12 | 4691 | puts_filtered (" TYPE_VECTOR"); |
f5f8a009 | 4692 | } |
876cecd0 TT |
4693 | if (TYPE_FIXED_INSTANCE (type)) |
4694 | { | |
4695 | puts_filtered (" TYPE_FIXED_INSTANCE"); | |
4696 | } | |
4697 | if (TYPE_STUB_SUPPORTED (type)) | |
4698 | { | |
4699 | puts_filtered (" TYPE_STUB_SUPPORTED"); | |
4700 | } | |
4701 | if (TYPE_NOTTEXT (type)) | |
4702 | { | |
4703 | puts_filtered (" TYPE_NOTTEXT"); | |
4704 | } | |
c906108c SS |
4705 | puts_filtered ("\n"); |
4706 | printfi_filtered (spaces, "nfields %d ", TYPE_NFIELDS (type)); | |
d4f3574e | 4707 | gdb_print_host_address (TYPE_FIELDS (type), gdb_stdout); |
c906108c SS |
4708 | puts_filtered ("\n"); |
4709 | for (idx = 0; idx < TYPE_NFIELDS (type); idx++) | |
4710 | { | |
14e75d8e JK |
4711 | if (TYPE_CODE (type) == TYPE_CODE_ENUM) |
4712 | printfi_filtered (spaces + 2, | |
4713 | "[%d] enumval %s type ", | |
4714 | idx, plongest (TYPE_FIELD_ENUMVAL (type, idx))); | |
4715 | else | |
4716 | printfi_filtered (spaces + 2, | |
6b850546 DT |
4717 | "[%d] bitpos %s bitsize %d type ", |
4718 | idx, plongest (TYPE_FIELD_BITPOS (type, idx)), | |
14e75d8e | 4719 | TYPE_FIELD_BITSIZE (type, idx)); |
d4f3574e | 4720 | gdb_print_host_address (TYPE_FIELD_TYPE (type, idx), gdb_stdout); |
c906108c SS |
4721 | printf_filtered (" name '%s' (", |
4722 | TYPE_FIELD_NAME (type, idx) != NULL | |
4723 | ? TYPE_FIELD_NAME (type, idx) | |
4724 | : "<NULL>"); | |
d4f3574e | 4725 | gdb_print_host_address (TYPE_FIELD_NAME (type, idx), gdb_stdout); |
c906108c SS |
4726 | printf_filtered (")\n"); |
4727 | if (TYPE_FIELD_TYPE (type, idx) != NULL) | |
4728 | { | |
4729 | recursive_dump_type (TYPE_FIELD_TYPE (type, idx), spaces + 4); | |
4730 | } | |
4731 | } | |
43bbcdc2 PH |
4732 | if (TYPE_CODE (type) == TYPE_CODE_RANGE) |
4733 | { | |
4734 | printfi_filtered (spaces, "low %s%s high %s%s\n", | |
4735 | plongest (TYPE_LOW_BOUND (type)), | |
4736 | TYPE_LOW_BOUND_UNDEFINED (type) ? " (undefined)" : "", | |
4737 | plongest (TYPE_HIGH_BOUND (type)), | |
3e43a32a MS |
4738 | TYPE_HIGH_BOUND_UNDEFINED (type) |
4739 | ? " (undefined)" : ""); | |
43bbcdc2 | 4740 | } |
c906108c | 4741 | |
b4ba55a1 JB |
4742 | switch (TYPE_SPECIFIC_FIELD (type)) |
4743 | { | |
4744 | case TYPE_SPECIFIC_CPLUS_STUFF: | |
4745 | printfi_filtered (spaces, "cplus_stuff "); | |
4746 | gdb_print_host_address (TYPE_CPLUS_SPECIFIC (type), | |
4747 | gdb_stdout); | |
4748 | puts_filtered ("\n"); | |
4749 | print_cplus_stuff (type, spaces); | |
4750 | break; | |
8da61cc4 | 4751 | |
b4ba55a1 JB |
4752 | case TYPE_SPECIFIC_GNAT_STUFF: |
4753 | printfi_filtered (spaces, "gnat_stuff "); | |
4754 | gdb_print_host_address (TYPE_GNAT_SPECIFIC (type), gdb_stdout); | |
4755 | puts_filtered ("\n"); | |
4756 | print_gnat_stuff (type, spaces); | |
4757 | break; | |
701c159d | 4758 | |
b4ba55a1 JB |
4759 | case TYPE_SPECIFIC_FLOATFORMAT: |
4760 | printfi_filtered (spaces, "floatformat "); | |
0db7851f UW |
4761 | if (TYPE_FLOATFORMAT (type) == NULL |
4762 | || TYPE_FLOATFORMAT (type)->name == NULL) | |
b4ba55a1 JB |
4763 | puts_filtered ("(null)"); |
4764 | else | |
0db7851f | 4765 | puts_filtered (TYPE_FLOATFORMAT (type)->name); |
b4ba55a1 JB |
4766 | puts_filtered ("\n"); |
4767 | break; | |
c906108c | 4768 | |
b6cdc2c1 | 4769 | case TYPE_SPECIFIC_FUNC: |
b4ba55a1 JB |
4770 | printfi_filtered (spaces, "calling_convention %d\n", |
4771 | TYPE_CALLING_CONVENTION (type)); | |
b6cdc2c1 | 4772 | /* tail_call_list is not printed. */ |
b4ba55a1 | 4773 | break; |
09e2d7c7 DE |
4774 | |
4775 | case TYPE_SPECIFIC_SELF_TYPE: | |
4776 | printfi_filtered (spaces, "self_type "); | |
4777 | gdb_print_host_address (TYPE_SELF_TYPE (type), gdb_stdout); | |
4778 | puts_filtered ("\n"); | |
4779 | break; | |
c906108c | 4780 | } |
b4ba55a1 | 4781 | |
c906108c SS |
4782 | if (spaces == 0) |
4783 | obstack_free (&dont_print_type_obstack, NULL); | |
4784 | } | |
5212577a | 4785 | \f |
ae5a43e0 DJ |
4786 | /* Trivial helpers for the libiberty hash table, for mapping one |
4787 | type to another. */ | |
4788 | ||
fd90ace4 | 4789 | struct type_pair : public allocate_on_obstack |
ae5a43e0 | 4790 | { |
fd90ace4 YQ |
4791 | type_pair (struct type *old_, struct type *newobj_) |
4792 | : old (old_), newobj (newobj_) | |
4793 | {} | |
4794 | ||
4795 | struct type * const old, * const newobj; | |
ae5a43e0 DJ |
4796 | }; |
4797 | ||
4798 | static hashval_t | |
4799 | type_pair_hash (const void *item) | |
4800 | { | |
9a3c8263 | 4801 | const struct type_pair *pair = (const struct type_pair *) item; |
d8734c88 | 4802 | |
ae5a43e0 DJ |
4803 | return htab_hash_pointer (pair->old); |
4804 | } | |
4805 | ||
4806 | static int | |
4807 | type_pair_eq (const void *item_lhs, const void *item_rhs) | |
4808 | { | |
9a3c8263 SM |
4809 | const struct type_pair *lhs = (const struct type_pair *) item_lhs; |
4810 | const struct type_pair *rhs = (const struct type_pair *) item_rhs; | |
d8734c88 | 4811 | |
ae5a43e0 DJ |
4812 | return lhs->old == rhs->old; |
4813 | } | |
4814 | ||
4815 | /* Allocate the hash table used by copy_type_recursive to walk | |
4816 | types without duplicates. We use OBJFILE's obstack, because | |
4817 | OBJFILE is about to be deleted. */ | |
4818 | ||
4819 | htab_t | |
4820 | create_copied_types_hash (struct objfile *objfile) | |
4821 | { | |
4822 | return htab_create_alloc_ex (1, type_pair_hash, type_pair_eq, | |
4823 | NULL, &objfile->objfile_obstack, | |
4824 | hashtab_obstack_allocate, | |
4825 | dummy_obstack_deallocate); | |
4826 | } | |
4827 | ||
d9823cbb KB |
4828 | /* Recursively copy (deep copy) a dynamic attribute list of a type. */ |
4829 | ||
4830 | static struct dynamic_prop_list * | |
4831 | copy_dynamic_prop_list (struct obstack *objfile_obstack, | |
4832 | struct dynamic_prop_list *list) | |
4833 | { | |
4834 | struct dynamic_prop_list *copy = list; | |
4835 | struct dynamic_prop_list **node_ptr = © | |
4836 | ||
4837 | while (*node_ptr != NULL) | |
4838 | { | |
4839 | struct dynamic_prop_list *node_copy; | |
4840 | ||
224c3ddb SM |
4841 | node_copy = ((struct dynamic_prop_list *) |
4842 | obstack_copy (objfile_obstack, *node_ptr, | |
4843 | sizeof (struct dynamic_prop_list))); | |
283a9958 | 4844 | node_copy->prop = (*node_ptr)->prop; |
d9823cbb KB |
4845 | *node_ptr = node_copy; |
4846 | ||
4847 | node_ptr = &node_copy->next; | |
4848 | } | |
4849 | ||
4850 | return copy; | |
4851 | } | |
4852 | ||
7ba81444 | 4853 | /* Recursively copy (deep copy) TYPE, if it is associated with |
eed8b28a PP |
4854 | OBJFILE. Return a new type owned by the gdbarch associated with the type, a |
4855 | saved type if we have already visited TYPE (using COPIED_TYPES), or TYPE if | |
4856 | it is not associated with OBJFILE. */ | |
ae5a43e0 DJ |
4857 | |
4858 | struct type * | |
7ba81444 MS |
4859 | copy_type_recursive (struct objfile *objfile, |
4860 | struct type *type, | |
ae5a43e0 DJ |
4861 | htab_t copied_types) |
4862 | { | |
ae5a43e0 DJ |
4863 | void **slot; |
4864 | struct type *new_type; | |
4865 | ||
e9bb382b | 4866 | if (! TYPE_OBJFILE_OWNED (type)) |
ae5a43e0 DJ |
4867 | return type; |
4868 | ||
7ba81444 MS |
4869 | /* This type shouldn't be pointing to any types in other objfiles; |
4870 | if it did, the type might disappear unexpectedly. */ | |
ae5a43e0 DJ |
4871 | gdb_assert (TYPE_OBJFILE (type) == objfile); |
4872 | ||
fd90ace4 YQ |
4873 | struct type_pair pair (type, nullptr); |
4874 | ||
ae5a43e0 DJ |
4875 | slot = htab_find_slot (copied_types, &pair, INSERT); |
4876 | if (*slot != NULL) | |
fe978cb0 | 4877 | return ((struct type_pair *) *slot)->newobj; |
ae5a43e0 | 4878 | |
e9bb382b | 4879 | new_type = alloc_type_arch (get_type_arch (type)); |
ae5a43e0 DJ |
4880 | |
4881 | /* We must add the new type to the hash table immediately, in case | |
4882 | we encounter this type again during a recursive call below. */ | |
fd90ace4 YQ |
4883 | struct type_pair *stored |
4884 | = new (&objfile->objfile_obstack) struct type_pair (type, new_type); | |
4885 | ||
ae5a43e0 DJ |
4886 | *slot = stored; |
4887 | ||
876cecd0 TT |
4888 | /* Copy the common fields of types. For the main type, we simply |
4889 | copy the entire thing and then update specific fields as needed. */ | |
4890 | *TYPE_MAIN_TYPE (new_type) = *TYPE_MAIN_TYPE (type); | |
e9bb382b UW |
4891 | TYPE_OBJFILE_OWNED (new_type) = 0; |
4892 | TYPE_OWNER (new_type).gdbarch = get_type_arch (type); | |
876cecd0 | 4893 | |
ae5a43e0 DJ |
4894 | if (TYPE_NAME (type)) |
4895 | TYPE_NAME (new_type) = xstrdup (TYPE_NAME (type)); | |
ae5a43e0 DJ |
4896 | |
4897 | TYPE_INSTANCE_FLAGS (new_type) = TYPE_INSTANCE_FLAGS (type); | |
4898 | TYPE_LENGTH (new_type) = TYPE_LENGTH (type); | |
4899 | ||
4900 | /* Copy the fields. */ | |
ae5a43e0 DJ |
4901 | if (TYPE_NFIELDS (type)) |
4902 | { | |
4903 | int i, nfields; | |
4904 | ||
4905 | nfields = TYPE_NFIELDS (type); | |
2fabdf33 AB |
4906 | TYPE_FIELDS (new_type) = (struct field *) |
4907 | TYPE_ZALLOC (new_type, nfields * sizeof (struct field)); | |
ae5a43e0 DJ |
4908 | for (i = 0; i < nfields; i++) |
4909 | { | |
7ba81444 MS |
4910 | TYPE_FIELD_ARTIFICIAL (new_type, i) = |
4911 | TYPE_FIELD_ARTIFICIAL (type, i); | |
ae5a43e0 DJ |
4912 | TYPE_FIELD_BITSIZE (new_type, i) = TYPE_FIELD_BITSIZE (type, i); |
4913 | if (TYPE_FIELD_TYPE (type, i)) | |
4914 | TYPE_FIELD_TYPE (new_type, i) | |
4915 | = copy_type_recursive (objfile, TYPE_FIELD_TYPE (type, i), | |
4916 | copied_types); | |
4917 | if (TYPE_FIELD_NAME (type, i)) | |
7ba81444 MS |
4918 | TYPE_FIELD_NAME (new_type, i) = |
4919 | xstrdup (TYPE_FIELD_NAME (type, i)); | |
d6a843b5 | 4920 | switch (TYPE_FIELD_LOC_KIND (type, i)) |
ae5a43e0 | 4921 | { |
d6a843b5 JK |
4922 | case FIELD_LOC_KIND_BITPOS: |
4923 | SET_FIELD_BITPOS (TYPE_FIELD (new_type, i), | |
4924 | TYPE_FIELD_BITPOS (type, i)); | |
4925 | break; | |
14e75d8e JK |
4926 | case FIELD_LOC_KIND_ENUMVAL: |
4927 | SET_FIELD_ENUMVAL (TYPE_FIELD (new_type, i), | |
4928 | TYPE_FIELD_ENUMVAL (type, i)); | |
4929 | break; | |
d6a843b5 JK |
4930 | case FIELD_LOC_KIND_PHYSADDR: |
4931 | SET_FIELD_PHYSADDR (TYPE_FIELD (new_type, i), | |
4932 | TYPE_FIELD_STATIC_PHYSADDR (type, i)); | |
4933 | break; | |
4934 | case FIELD_LOC_KIND_PHYSNAME: | |
4935 | SET_FIELD_PHYSNAME (TYPE_FIELD (new_type, i), | |
4936 | xstrdup (TYPE_FIELD_STATIC_PHYSNAME (type, | |
4937 | i))); | |
4938 | break; | |
4939 | default: | |
4940 | internal_error (__FILE__, __LINE__, | |
4941 | _("Unexpected type field location kind: %d"), | |
4942 | TYPE_FIELD_LOC_KIND (type, i)); | |
ae5a43e0 DJ |
4943 | } |
4944 | } | |
4945 | } | |
4946 | ||
0963b4bd | 4947 | /* For range types, copy the bounds information. */ |
43bbcdc2 PH |
4948 | if (TYPE_CODE (type) == TYPE_CODE_RANGE) |
4949 | { | |
2fabdf33 AB |
4950 | TYPE_RANGE_DATA (new_type) = (struct range_bounds *) |
4951 | TYPE_ALLOC (new_type, sizeof (struct range_bounds)); | |
43bbcdc2 PH |
4952 | *TYPE_RANGE_DATA (new_type) = *TYPE_RANGE_DATA (type); |
4953 | } | |
4954 | ||
d9823cbb KB |
4955 | if (TYPE_DYN_PROP_LIST (type) != NULL) |
4956 | TYPE_DYN_PROP_LIST (new_type) | |
4957 | = copy_dynamic_prop_list (&objfile->objfile_obstack, | |
4958 | TYPE_DYN_PROP_LIST (type)); | |
4959 | ||
3cdcd0ce | 4960 | |
ae5a43e0 DJ |
4961 | /* Copy pointers to other types. */ |
4962 | if (TYPE_TARGET_TYPE (type)) | |
7ba81444 MS |
4963 | TYPE_TARGET_TYPE (new_type) = |
4964 | copy_type_recursive (objfile, | |
4965 | TYPE_TARGET_TYPE (type), | |
4966 | copied_types); | |
f6b3afbf | 4967 | |
ae5a43e0 DJ |
4968 | /* Maybe copy the type_specific bits. |
4969 | ||
4970 | NOTE drow/2005-12-09: We do not copy the C++-specific bits like | |
4971 | base classes and methods. There's no fundamental reason why we | |
4972 | can't, but at the moment it is not needed. */ | |
4973 | ||
f6b3afbf DE |
4974 | switch (TYPE_SPECIFIC_FIELD (type)) |
4975 | { | |
4976 | case TYPE_SPECIFIC_NONE: | |
4977 | break; | |
4978 | case TYPE_SPECIFIC_FUNC: | |
4979 | INIT_FUNC_SPECIFIC (new_type); | |
4980 | TYPE_CALLING_CONVENTION (new_type) = TYPE_CALLING_CONVENTION (type); | |
4981 | TYPE_NO_RETURN (new_type) = TYPE_NO_RETURN (type); | |
4982 | TYPE_TAIL_CALL_LIST (new_type) = NULL; | |
4983 | break; | |
4984 | case TYPE_SPECIFIC_FLOATFORMAT: | |
4985 | TYPE_FLOATFORMAT (new_type) = TYPE_FLOATFORMAT (type); | |
4986 | break; | |
4987 | case TYPE_SPECIFIC_CPLUS_STUFF: | |
4988 | INIT_CPLUS_SPECIFIC (new_type); | |
4989 | break; | |
4990 | case TYPE_SPECIFIC_GNAT_STUFF: | |
4991 | INIT_GNAT_SPECIFIC (new_type); | |
4992 | break; | |
09e2d7c7 DE |
4993 | case TYPE_SPECIFIC_SELF_TYPE: |
4994 | set_type_self_type (new_type, | |
4995 | copy_type_recursive (objfile, TYPE_SELF_TYPE (type), | |
4996 | copied_types)); | |
4997 | break; | |
f6b3afbf DE |
4998 | default: |
4999 | gdb_assert_not_reached ("bad type_specific_kind"); | |
5000 | } | |
ae5a43e0 DJ |
5001 | |
5002 | return new_type; | |
5003 | } | |
5004 | ||
4af88198 JB |
5005 | /* Make a copy of the given TYPE, except that the pointer & reference |
5006 | types are not preserved. | |
5007 | ||
5008 | This function assumes that the given type has an associated objfile. | |
5009 | This objfile is used to allocate the new type. */ | |
5010 | ||
5011 | struct type * | |
5012 | copy_type (const struct type *type) | |
5013 | { | |
5014 | struct type *new_type; | |
5015 | ||
e9bb382b | 5016 | gdb_assert (TYPE_OBJFILE_OWNED (type)); |
4af88198 | 5017 | |
e9bb382b | 5018 | new_type = alloc_type_copy (type); |
4af88198 JB |
5019 | TYPE_INSTANCE_FLAGS (new_type) = TYPE_INSTANCE_FLAGS (type); |
5020 | TYPE_LENGTH (new_type) = TYPE_LENGTH (type); | |
5021 | memcpy (TYPE_MAIN_TYPE (new_type), TYPE_MAIN_TYPE (type), | |
5022 | sizeof (struct main_type)); | |
d9823cbb KB |
5023 | if (TYPE_DYN_PROP_LIST (type) != NULL) |
5024 | TYPE_DYN_PROP_LIST (new_type) | |
5025 | = copy_dynamic_prop_list (&TYPE_OBJFILE (type) -> objfile_obstack, | |
5026 | TYPE_DYN_PROP_LIST (type)); | |
4af88198 JB |
5027 | |
5028 | return new_type; | |
5029 | } | |
5212577a | 5030 | \f |
e9bb382b UW |
5031 | /* Helper functions to initialize architecture-specific types. */ |
5032 | ||
5033 | /* Allocate a type structure associated with GDBARCH and set its | |
5034 | CODE, LENGTH, and NAME fields. */ | |
5212577a | 5035 | |
e9bb382b UW |
5036 | struct type * |
5037 | arch_type (struct gdbarch *gdbarch, | |
77b7c781 | 5038 | enum type_code code, int bit, const char *name) |
e9bb382b UW |
5039 | { |
5040 | struct type *type; | |
5041 | ||
5042 | type = alloc_type_arch (gdbarch); | |
ae438bc5 | 5043 | set_type_code (type, code); |
77b7c781 UW |
5044 | gdb_assert ((bit % TARGET_CHAR_BIT) == 0); |
5045 | TYPE_LENGTH (type) = bit / TARGET_CHAR_BIT; | |
e9bb382b UW |
5046 | |
5047 | if (name) | |
6c214e7c | 5048 | TYPE_NAME (type) = gdbarch_obstack_strdup (gdbarch, name); |
e9bb382b UW |
5049 | |
5050 | return type; | |
5051 | } | |
5052 | ||
5053 | /* Allocate a TYPE_CODE_INT type structure associated with GDBARCH. | |
5054 | BIT is the type size in bits. If UNSIGNED_P is non-zero, set | |
5055 | the type's TYPE_UNSIGNED flag. NAME is the type name. */ | |
5212577a | 5056 | |
e9bb382b UW |
5057 | struct type * |
5058 | arch_integer_type (struct gdbarch *gdbarch, | |
695bfa52 | 5059 | int bit, int unsigned_p, const char *name) |
e9bb382b UW |
5060 | { |
5061 | struct type *t; | |
5062 | ||
77b7c781 | 5063 | t = arch_type (gdbarch, TYPE_CODE_INT, bit, name); |
e9bb382b UW |
5064 | if (unsigned_p) |
5065 | TYPE_UNSIGNED (t) = 1; | |
e9bb382b UW |
5066 | |
5067 | return t; | |
5068 | } | |
5069 | ||
5070 | /* Allocate a TYPE_CODE_CHAR type structure associated with GDBARCH. | |
5071 | BIT is the type size in bits. If UNSIGNED_P is non-zero, set | |
5072 | the type's TYPE_UNSIGNED flag. NAME is the type name. */ | |
5212577a | 5073 | |
e9bb382b UW |
5074 | struct type * |
5075 | arch_character_type (struct gdbarch *gdbarch, | |
695bfa52 | 5076 | int bit, int unsigned_p, const char *name) |
e9bb382b UW |
5077 | { |
5078 | struct type *t; | |
5079 | ||
77b7c781 | 5080 | t = arch_type (gdbarch, TYPE_CODE_CHAR, bit, name); |
e9bb382b UW |
5081 | if (unsigned_p) |
5082 | TYPE_UNSIGNED (t) = 1; | |
5083 | ||
5084 | return t; | |
5085 | } | |
5086 | ||
5087 | /* Allocate a TYPE_CODE_BOOL type structure associated with GDBARCH. | |
5088 | BIT is the type size in bits. If UNSIGNED_P is non-zero, set | |
5089 | the type's TYPE_UNSIGNED flag. NAME is the type name. */ | |
5212577a | 5090 | |
e9bb382b UW |
5091 | struct type * |
5092 | arch_boolean_type (struct gdbarch *gdbarch, | |
695bfa52 | 5093 | int bit, int unsigned_p, const char *name) |
e9bb382b UW |
5094 | { |
5095 | struct type *t; | |
5096 | ||
77b7c781 | 5097 | t = arch_type (gdbarch, TYPE_CODE_BOOL, bit, name); |
e9bb382b UW |
5098 | if (unsigned_p) |
5099 | TYPE_UNSIGNED (t) = 1; | |
5100 | ||
5101 | return t; | |
5102 | } | |
5103 | ||
5104 | /* Allocate a TYPE_CODE_FLT type structure associated with GDBARCH. | |
5105 | BIT is the type size in bits; if BIT equals -1, the size is | |
5106 | determined by the floatformat. NAME is the type name. Set the | |
5107 | TYPE_FLOATFORMAT from FLOATFORMATS. */ | |
5212577a | 5108 | |
27067745 | 5109 | struct type * |
e9bb382b | 5110 | arch_float_type (struct gdbarch *gdbarch, |
695bfa52 TT |
5111 | int bit, const char *name, |
5112 | const struct floatformat **floatformats) | |
8da61cc4 | 5113 | { |
0db7851f | 5114 | const struct floatformat *fmt = floatformats[gdbarch_byte_order (gdbarch)]; |
8da61cc4 DJ |
5115 | struct type *t; |
5116 | ||
0db7851f | 5117 | bit = verify_floatformat (bit, fmt); |
77b7c781 | 5118 | t = arch_type (gdbarch, TYPE_CODE_FLT, bit, name); |
0db7851f | 5119 | TYPE_FLOATFORMAT (t) = fmt; |
b79497cb | 5120 | |
8da61cc4 DJ |
5121 | return t; |
5122 | } | |
5123 | ||
88dfca6c UW |
5124 | /* Allocate a TYPE_CODE_DECFLOAT type structure associated with GDBARCH. |
5125 | BIT is the type size in bits. NAME is the type name. */ | |
5126 | ||
5127 | struct type * | |
5128 | arch_decfloat_type (struct gdbarch *gdbarch, int bit, const char *name) | |
5129 | { | |
5130 | struct type *t; | |
5131 | ||
77b7c781 | 5132 | t = arch_type (gdbarch, TYPE_CODE_DECFLOAT, bit, name); |
88dfca6c UW |
5133 | return t; |
5134 | } | |
5135 | ||
e9bb382b UW |
5136 | /* Allocate a TYPE_CODE_COMPLEX type structure associated with GDBARCH. |
5137 | NAME is the type name. TARGET_TYPE is the component float type. */ | |
5212577a | 5138 | |
27067745 | 5139 | struct type * |
e9bb382b | 5140 | arch_complex_type (struct gdbarch *gdbarch, |
695bfa52 | 5141 | const char *name, struct type *target_type) |
27067745 UW |
5142 | { |
5143 | struct type *t; | |
d8734c88 | 5144 | |
e9bb382b | 5145 | t = arch_type (gdbarch, TYPE_CODE_COMPLEX, |
77b7c781 | 5146 | 2 * TYPE_LENGTH (target_type) * TARGET_CHAR_BIT, name); |
27067745 UW |
5147 | TYPE_TARGET_TYPE (t) = target_type; |
5148 | return t; | |
5149 | } | |
5150 | ||
88dfca6c UW |
5151 | /* Allocate a TYPE_CODE_PTR type structure associated with GDBARCH. |
5152 | BIT is the pointer type size in bits. NAME is the type name. | |
5153 | TARGET_TYPE is the pointer target type. Always sets the pointer type's | |
5154 | TYPE_UNSIGNED flag. */ | |
5155 | ||
5156 | struct type * | |
5157 | arch_pointer_type (struct gdbarch *gdbarch, | |
5158 | int bit, const char *name, struct type *target_type) | |
5159 | { | |
5160 | struct type *t; | |
5161 | ||
77b7c781 | 5162 | t = arch_type (gdbarch, TYPE_CODE_PTR, bit, name); |
88dfca6c UW |
5163 | TYPE_TARGET_TYPE (t) = target_type; |
5164 | TYPE_UNSIGNED (t) = 1; | |
5165 | return t; | |
5166 | } | |
5167 | ||
e9bb382b | 5168 | /* Allocate a TYPE_CODE_FLAGS type structure associated with GDBARCH. |
77b7c781 | 5169 | NAME is the type name. BIT is the size of the flag word in bits. */ |
5212577a | 5170 | |
e9bb382b | 5171 | struct type * |
77b7c781 | 5172 | arch_flags_type (struct gdbarch *gdbarch, const char *name, int bit) |
e9bb382b | 5173 | { |
e9bb382b UW |
5174 | struct type *type; |
5175 | ||
77b7c781 | 5176 | type = arch_type (gdbarch, TYPE_CODE_FLAGS, bit, name); |
e9bb382b | 5177 | TYPE_UNSIGNED (type) = 1; |
81516450 DE |
5178 | TYPE_NFIELDS (type) = 0; |
5179 | /* Pre-allocate enough space assuming every field is one bit. */ | |
224c3ddb | 5180 | TYPE_FIELDS (type) |
77b7c781 | 5181 | = (struct field *) TYPE_ZALLOC (type, bit * sizeof (struct field)); |
e9bb382b UW |
5182 | |
5183 | return type; | |
5184 | } | |
5185 | ||
5186 | /* Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at | |
81516450 DE |
5187 | position BITPOS is called NAME. Pass NAME as "" for fields that |
5188 | should not be printed. */ | |
5189 | ||
5190 | void | |
5191 | append_flags_type_field (struct type *type, int start_bitpos, int nr_bits, | |
695bfa52 | 5192 | struct type *field_type, const char *name) |
81516450 DE |
5193 | { |
5194 | int type_bitsize = TYPE_LENGTH (type) * TARGET_CHAR_BIT; | |
5195 | int field_nr = TYPE_NFIELDS (type); | |
5196 | ||
5197 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_FLAGS); | |
5198 | gdb_assert (TYPE_NFIELDS (type) + 1 <= type_bitsize); | |
5199 | gdb_assert (start_bitpos >= 0 && start_bitpos < type_bitsize); | |
5200 | gdb_assert (nr_bits >= 1 && nr_bits <= type_bitsize); | |
5201 | gdb_assert (name != NULL); | |
5202 | ||
5203 | TYPE_FIELD_NAME (type, field_nr) = xstrdup (name); | |
5204 | TYPE_FIELD_TYPE (type, field_nr) = field_type; | |
5205 | SET_FIELD_BITPOS (TYPE_FIELD (type, field_nr), start_bitpos); | |
5206 | TYPE_FIELD_BITSIZE (type, field_nr) = nr_bits; | |
5207 | ++TYPE_NFIELDS (type); | |
5208 | } | |
5209 | ||
5210 | /* Special version of append_flags_type_field to add a flag field. | |
5211 | Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at | |
e9bb382b | 5212 | position BITPOS is called NAME. */ |
5212577a | 5213 | |
e9bb382b | 5214 | void |
695bfa52 | 5215 | append_flags_type_flag (struct type *type, int bitpos, const char *name) |
e9bb382b | 5216 | { |
81516450 | 5217 | struct gdbarch *gdbarch = get_type_arch (type); |
e9bb382b | 5218 | |
81516450 DE |
5219 | append_flags_type_field (type, bitpos, 1, |
5220 | builtin_type (gdbarch)->builtin_bool, | |
5221 | name); | |
e9bb382b UW |
5222 | } |
5223 | ||
5224 | /* Allocate a TYPE_CODE_STRUCT or TYPE_CODE_UNION type structure (as | |
5225 | specified by CODE) associated with GDBARCH. NAME is the type name. */ | |
5212577a | 5226 | |
e9bb382b | 5227 | struct type * |
695bfa52 TT |
5228 | arch_composite_type (struct gdbarch *gdbarch, const char *name, |
5229 | enum type_code code) | |
e9bb382b UW |
5230 | { |
5231 | struct type *t; | |
d8734c88 | 5232 | |
e9bb382b UW |
5233 | gdb_assert (code == TYPE_CODE_STRUCT || code == TYPE_CODE_UNION); |
5234 | t = arch_type (gdbarch, code, 0, NULL); | |
e86ca25f | 5235 | TYPE_NAME (t) = name; |
e9bb382b UW |
5236 | INIT_CPLUS_SPECIFIC (t); |
5237 | return t; | |
5238 | } | |
5239 | ||
5240 | /* Add new field with name NAME and type FIELD to composite type T. | |
f5dff777 DJ |
5241 | Do not set the field's position or adjust the type's length; |
5242 | the caller should do so. Return the new field. */ | |
5212577a | 5243 | |
f5dff777 | 5244 | struct field * |
695bfa52 | 5245 | append_composite_type_field_raw (struct type *t, const char *name, |
f5dff777 | 5246 | struct type *field) |
e9bb382b UW |
5247 | { |
5248 | struct field *f; | |
d8734c88 | 5249 | |
e9bb382b | 5250 | TYPE_NFIELDS (t) = TYPE_NFIELDS (t) + 1; |
224c3ddb SM |
5251 | TYPE_FIELDS (t) = XRESIZEVEC (struct field, TYPE_FIELDS (t), |
5252 | TYPE_NFIELDS (t)); | |
e9bb382b UW |
5253 | f = &(TYPE_FIELDS (t)[TYPE_NFIELDS (t) - 1]); |
5254 | memset (f, 0, sizeof f[0]); | |
5255 | FIELD_TYPE (f[0]) = field; | |
5256 | FIELD_NAME (f[0]) = name; | |
f5dff777 DJ |
5257 | return f; |
5258 | } | |
5259 | ||
5260 | /* Add new field with name NAME and type FIELD to composite type T. | |
5261 | ALIGNMENT (if non-zero) specifies the minimum field alignment. */ | |
5212577a | 5262 | |
f5dff777 | 5263 | void |
695bfa52 | 5264 | append_composite_type_field_aligned (struct type *t, const char *name, |
f5dff777 DJ |
5265 | struct type *field, int alignment) |
5266 | { | |
5267 | struct field *f = append_composite_type_field_raw (t, name, field); | |
d8734c88 | 5268 | |
e9bb382b UW |
5269 | if (TYPE_CODE (t) == TYPE_CODE_UNION) |
5270 | { | |
5271 | if (TYPE_LENGTH (t) < TYPE_LENGTH (field)) | |
5272 | TYPE_LENGTH (t) = TYPE_LENGTH (field); | |
5273 | } | |
5274 | else if (TYPE_CODE (t) == TYPE_CODE_STRUCT) | |
5275 | { | |
5276 | TYPE_LENGTH (t) = TYPE_LENGTH (t) + TYPE_LENGTH (field); | |
5277 | if (TYPE_NFIELDS (t) > 1) | |
5278 | { | |
f41f5e61 PA |
5279 | SET_FIELD_BITPOS (f[0], |
5280 | (FIELD_BITPOS (f[-1]) | |
5281 | + (TYPE_LENGTH (FIELD_TYPE (f[-1])) | |
5282 | * TARGET_CHAR_BIT))); | |
e9bb382b UW |
5283 | |
5284 | if (alignment) | |
5285 | { | |
86c3c1fc AB |
5286 | int left; |
5287 | ||
5288 | alignment *= TARGET_CHAR_BIT; | |
5289 | left = FIELD_BITPOS (f[0]) % alignment; | |
d8734c88 | 5290 | |
e9bb382b UW |
5291 | if (left) |
5292 | { | |
f41f5e61 | 5293 | SET_FIELD_BITPOS (f[0], FIELD_BITPOS (f[0]) + (alignment - left)); |
86c3c1fc | 5294 | TYPE_LENGTH (t) += (alignment - left) / TARGET_CHAR_BIT; |
e9bb382b UW |
5295 | } |
5296 | } | |
5297 | } | |
5298 | } | |
5299 | } | |
5300 | ||
5301 | /* Add new field with name NAME and type FIELD to composite type T. */ | |
5212577a | 5302 | |
e9bb382b | 5303 | void |
695bfa52 | 5304 | append_composite_type_field (struct type *t, const char *name, |
e9bb382b UW |
5305 | struct type *field) |
5306 | { | |
5307 | append_composite_type_field_aligned (t, name, field, 0); | |
5308 | } | |
5309 | ||
000177f0 AC |
5310 | static struct gdbarch_data *gdbtypes_data; |
5311 | ||
5312 | const struct builtin_type * | |
5313 | builtin_type (struct gdbarch *gdbarch) | |
5314 | { | |
9a3c8263 | 5315 | return (const struct builtin_type *) gdbarch_data (gdbarch, gdbtypes_data); |
000177f0 AC |
5316 | } |
5317 | ||
5318 | static void * | |
5319 | gdbtypes_post_init (struct gdbarch *gdbarch) | |
5320 | { | |
5321 | struct builtin_type *builtin_type | |
5322 | = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct builtin_type); | |
5323 | ||
46bf5051 | 5324 | /* Basic types. */ |
e9bb382b | 5325 | builtin_type->builtin_void |
77b7c781 | 5326 | = arch_type (gdbarch, TYPE_CODE_VOID, TARGET_CHAR_BIT, "void"); |
e9bb382b UW |
5327 | builtin_type->builtin_char |
5328 | = arch_integer_type (gdbarch, TARGET_CHAR_BIT, | |
5329 | !gdbarch_char_signed (gdbarch), "char"); | |
c413c448 | 5330 | TYPE_NOSIGN (builtin_type->builtin_char) = 1; |
e9bb382b UW |
5331 | builtin_type->builtin_signed_char |
5332 | = arch_integer_type (gdbarch, TARGET_CHAR_BIT, | |
5333 | 0, "signed char"); | |
5334 | builtin_type->builtin_unsigned_char | |
5335 | = arch_integer_type (gdbarch, TARGET_CHAR_BIT, | |
5336 | 1, "unsigned char"); | |
5337 | builtin_type->builtin_short | |
5338 | = arch_integer_type (gdbarch, gdbarch_short_bit (gdbarch), | |
5339 | 0, "short"); | |
5340 | builtin_type->builtin_unsigned_short | |
5341 | = arch_integer_type (gdbarch, gdbarch_short_bit (gdbarch), | |
5342 | 1, "unsigned short"); | |
5343 | builtin_type->builtin_int | |
5344 | = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch), | |
5345 | 0, "int"); | |
5346 | builtin_type->builtin_unsigned_int | |
5347 | = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch), | |
5348 | 1, "unsigned int"); | |
5349 | builtin_type->builtin_long | |
5350 | = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch), | |
5351 | 0, "long"); | |
5352 | builtin_type->builtin_unsigned_long | |
5353 | = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch), | |
5354 | 1, "unsigned long"); | |
5355 | builtin_type->builtin_long_long | |
5356 | = arch_integer_type (gdbarch, gdbarch_long_long_bit (gdbarch), | |
5357 | 0, "long long"); | |
5358 | builtin_type->builtin_unsigned_long_long | |
5359 | = arch_integer_type (gdbarch, gdbarch_long_long_bit (gdbarch), | |
5360 | 1, "unsigned long long"); | |
70bd8e24 | 5361 | builtin_type->builtin_float |
e9bb382b | 5362 | = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch), |
27067745 | 5363 | "float", gdbarch_float_format (gdbarch)); |
70bd8e24 | 5364 | builtin_type->builtin_double |
e9bb382b | 5365 | = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch), |
27067745 | 5366 | "double", gdbarch_double_format (gdbarch)); |
70bd8e24 | 5367 | builtin_type->builtin_long_double |
e9bb382b | 5368 | = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch), |
27067745 | 5369 | "long double", gdbarch_long_double_format (gdbarch)); |
70bd8e24 | 5370 | builtin_type->builtin_complex |
e9bb382b UW |
5371 | = arch_complex_type (gdbarch, "complex", |
5372 | builtin_type->builtin_float); | |
70bd8e24 | 5373 | builtin_type->builtin_double_complex |
e9bb382b UW |
5374 | = arch_complex_type (gdbarch, "double complex", |
5375 | builtin_type->builtin_double); | |
5376 | builtin_type->builtin_string | |
77b7c781 | 5377 | = arch_type (gdbarch, TYPE_CODE_STRING, TARGET_CHAR_BIT, "string"); |
e9bb382b | 5378 | builtin_type->builtin_bool |
77b7c781 | 5379 | = arch_type (gdbarch, TYPE_CODE_BOOL, TARGET_CHAR_BIT, "bool"); |
000177f0 | 5380 | |
7678ef8f TJB |
5381 | /* The following three are about decimal floating point types, which |
5382 | are 32-bits, 64-bits and 128-bits respectively. */ | |
5383 | builtin_type->builtin_decfloat | |
88dfca6c | 5384 | = arch_decfloat_type (gdbarch, 32, "_Decimal32"); |
7678ef8f | 5385 | builtin_type->builtin_decdouble |
88dfca6c | 5386 | = arch_decfloat_type (gdbarch, 64, "_Decimal64"); |
7678ef8f | 5387 | builtin_type->builtin_declong |
88dfca6c | 5388 | = arch_decfloat_type (gdbarch, 128, "_Decimal128"); |
7678ef8f | 5389 | |
69feb676 | 5390 | /* "True" character types. */ |
e9bb382b UW |
5391 | builtin_type->builtin_true_char |
5392 | = arch_character_type (gdbarch, TARGET_CHAR_BIT, 0, "true character"); | |
5393 | builtin_type->builtin_true_unsigned_char | |
5394 | = arch_character_type (gdbarch, TARGET_CHAR_BIT, 1, "true character"); | |
69feb676 | 5395 | |
df4df182 | 5396 | /* Fixed-size integer types. */ |
e9bb382b UW |
5397 | builtin_type->builtin_int0 |
5398 | = arch_integer_type (gdbarch, 0, 0, "int0_t"); | |
5399 | builtin_type->builtin_int8 | |
5400 | = arch_integer_type (gdbarch, 8, 0, "int8_t"); | |
5401 | builtin_type->builtin_uint8 | |
5402 | = arch_integer_type (gdbarch, 8, 1, "uint8_t"); | |
5403 | builtin_type->builtin_int16 | |
5404 | = arch_integer_type (gdbarch, 16, 0, "int16_t"); | |
5405 | builtin_type->builtin_uint16 | |
5406 | = arch_integer_type (gdbarch, 16, 1, "uint16_t"); | |
d1908f2d JD |
5407 | builtin_type->builtin_int24 |
5408 | = arch_integer_type (gdbarch, 24, 0, "int24_t"); | |
5409 | builtin_type->builtin_uint24 | |
5410 | = arch_integer_type (gdbarch, 24, 1, "uint24_t"); | |
e9bb382b UW |
5411 | builtin_type->builtin_int32 |
5412 | = arch_integer_type (gdbarch, 32, 0, "int32_t"); | |
5413 | builtin_type->builtin_uint32 | |
5414 | = arch_integer_type (gdbarch, 32, 1, "uint32_t"); | |
5415 | builtin_type->builtin_int64 | |
5416 | = arch_integer_type (gdbarch, 64, 0, "int64_t"); | |
5417 | builtin_type->builtin_uint64 | |
5418 | = arch_integer_type (gdbarch, 64, 1, "uint64_t"); | |
5419 | builtin_type->builtin_int128 | |
5420 | = arch_integer_type (gdbarch, 128, 0, "int128_t"); | |
5421 | builtin_type->builtin_uint128 | |
5422 | = arch_integer_type (gdbarch, 128, 1, "uint128_t"); | |
2844d6b5 KW |
5423 | TYPE_INSTANCE_FLAGS (builtin_type->builtin_int8) |= |
5424 | TYPE_INSTANCE_FLAG_NOTTEXT; | |
5425 | TYPE_INSTANCE_FLAGS (builtin_type->builtin_uint8) |= | |
5426 | TYPE_INSTANCE_FLAG_NOTTEXT; | |
df4df182 | 5427 | |
9a22f0d0 PM |
5428 | /* Wide character types. */ |
5429 | builtin_type->builtin_char16 | |
53e710ac | 5430 | = arch_integer_type (gdbarch, 16, 1, "char16_t"); |
9a22f0d0 | 5431 | builtin_type->builtin_char32 |
53e710ac | 5432 | = arch_integer_type (gdbarch, 32, 1, "char32_t"); |
53375380 PA |
5433 | builtin_type->builtin_wchar |
5434 | = arch_integer_type (gdbarch, gdbarch_wchar_bit (gdbarch), | |
5435 | !gdbarch_wchar_signed (gdbarch), "wchar_t"); | |
9a22f0d0 | 5436 | |
46bf5051 | 5437 | /* Default data/code pointer types. */ |
e9bb382b UW |
5438 | builtin_type->builtin_data_ptr |
5439 | = lookup_pointer_type (builtin_type->builtin_void); | |
5440 | builtin_type->builtin_func_ptr | |
5441 | = lookup_pointer_type (lookup_function_type (builtin_type->builtin_void)); | |
0875794a JK |
5442 | builtin_type->builtin_func_func |
5443 | = lookup_function_type (builtin_type->builtin_func_ptr); | |
46bf5051 | 5444 | |
78267919 | 5445 | /* This type represents a GDB internal function. */ |
e9bb382b UW |
5446 | builtin_type->internal_fn |
5447 | = arch_type (gdbarch, TYPE_CODE_INTERNAL_FUNCTION, 0, | |
5448 | "<internal function>"); | |
78267919 | 5449 | |
e81e7f5e SC |
5450 | /* This type represents an xmethod. */ |
5451 | builtin_type->xmethod | |
5452 | = arch_type (gdbarch, TYPE_CODE_XMETHOD, 0, "<xmethod>"); | |
5453 | ||
46bf5051 UW |
5454 | return builtin_type; |
5455 | } | |
5456 | ||
46bf5051 UW |
5457 | /* This set of objfile-based types is intended to be used by symbol |
5458 | readers as basic types. */ | |
5459 | ||
5460 | static const struct objfile_data *objfile_type_data; | |
5461 | ||
5462 | const struct objfile_type * | |
5463 | objfile_type (struct objfile *objfile) | |
5464 | { | |
5465 | struct gdbarch *gdbarch; | |
5466 | struct objfile_type *objfile_type | |
9a3c8263 | 5467 | = (struct objfile_type *) objfile_data (objfile, objfile_type_data); |
46bf5051 UW |
5468 | |
5469 | if (objfile_type) | |
5470 | return objfile_type; | |
5471 | ||
5472 | objfile_type = OBSTACK_CALLOC (&objfile->objfile_obstack, | |
5473 | 1, struct objfile_type); | |
5474 | ||
5475 | /* Use the objfile architecture to determine basic type properties. */ | |
5476 | gdbarch = get_objfile_arch (objfile); | |
5477 | ||
5478 | /* Basic types. */ | |
5479 | objfile_type->builtin_void | |
77b7c781 | 5480 | = init_type (objfile, TYPE_CODE_VOID, TARGET_CHAR_BIT, "void"); |
46bf5051 | 5481 | objfile_type->builtin_char |
19f392bc UW |
5482 | = init_integer_type (objfile, TARGET_CHAR_BIT, |
5483 | !gdbarch_char_signed (gdbarch), "char"); | |
c413c448 | 5484 | TYPE_NOSIGN (objfile_type->builtin_char) = 1; |
46bf5051 | 5485 | objfile_type->builtin_signed_char |
19f392bc UW |
5486 | = init_integer_type (objfile, TARGET_CHAR_BIT, |
5487 | 0, "signed char"); | |
46bf5051 | 5488 | objfile_type->builtin_unsigned_char |
19f392bc UW |
5489 | = init_integer_type (objfile, TARGET_CHAR_BIT, |
5490 | 1, "unsigned char"); | |
46bf5051 | 5491 | objfile_type->builtin_short |
19f392bc UW |
5492 | = init_integer_type (objfile, gdbarch_short_bit (gdbarch), |
5493 | 0, "short"); | |
46bf5051 | 5494 | objfile_type->builtin_unsigned_short |
19f392bc UW |
5495 | = init_integer_type (objfile, gdbarch_short_bit (gdbarch), |
5496 | 1, "unsigned short"); | |
46bf5051 | 5497 | objfile_type->builtin_int |
19f392bc UW |
5498 | = init_integer_type (objfile, gdbarch_int_bit (gdbarch), |
5499 | 0, "int"); | |
46bf5051 | 5500 | objfile_type->builtin_unsigned_int |
19f392bc UW |
5501 | = init_integer_type (objfile, gdbarch_int_bit (gdbarch), |
5502 | 1, "unsigned int"); | |
46bf5051 | 5503 | objfile_type->builtin_long |
19f392bc UW |
5504 | = init_integer_type (objfile, gdbarch_long_bit (gdbarch), |
5505 | 0, "long"); | |
46bf5051 | 5506 | objfile_type->builtin_unsigned_long |
19f392bc UW |
5507 | = init_integer_type (objfile, gdbarch_long_bit (gdbarch), |
5508 | 1, "unsigned long"); | |
46bf5051 | 5509 | objfile_type->builtin_long_long |
19f392bc UW |
5510 | = init_integer_type (objfile, gdbarch_long_long_bit (gdbarch), |
5511 | 0, "long long"); | |
46bf5051 | 5512 | objfile_type->builtin_unsigned_long_long |
19f392bc UW |
5513 | = init_integer_type (objfile, gdbarch_long_long_bit (gdbarch), |
5514 | 1, "unsigned long long"); | |
46bf5051 | 5515 | objfile_type->builtin_float |
19f392bc UW |
5516 | = init_float_type (objfile, gdbarch_float_bit (gdbarch), |
5517 | "float", gdbarch_float_format (gdbarch)); | |
46bf5051 | 5518 | objfile_type->builtin_double |
19f392bc UW |
5519 | = init_float_type (objfile, gdbarch_double_bit (gdbarch), |
5520 | "double", gdbarch_double_format (gdbarch)); | |
46bf5051 | 5521 | objfile_type->builtin_long_double |
19f392bc UW |
5522 | = init_float_type (objfile, gdbarch_long_double_bit (gdbarch), |
5523 | "long double", gdbarch_long_double_format (gdbarch)); | |
46bf5051 UW |
5524 | |
5525 | /* This type represents a type that was unrecognized in symbol read-in. */ | |
5526 | objfile_type->builtin_error | |
19f392bc | 5527 | = init_type (objfile, TYPE_CODE_ERROR, 0, "<unknown type>"); |
46bf5051 UW |
5528 | |
5529 | /* The following set of types is used for symbols with no | |
5530 | debug information. */ | |
5531 | objfile_type->nodebug_text_symbol | |
77b7c781 | 5532 | = init_type (objfile, TYPE_CODE_FUNC, TARGET_CHAR_BIT, |
19f392bc | 5533 | "<text variable, no debug info>"); |
0875794a | 5534 | objfile_type->nodebug_text_gnu_ifunc_symbol |
77b7c781 | 5535 | = init_type (objfile, TYPE_CODE_FUNC, TARGET_CHAR_BIT, |
19f392bc | 5536 | "<text gnu-indirect-function variable, no debug info>"); |
19f392bc | 5537 | TYPE_GNU_IFUNC (objfile_type->nodebug_text_gnu_ifunc_symbol) = 1; |
0875794a | 5538 | objfile_type->nodebug_got_plt_symbol |
19f392bc UW |
5539 | = init_pointer_type (objfile, gdbarch_addr_bit (gdbarch), |
5540 | "<text from jump slot in .got.plt, no debug info>", | |
5541 | objfile_type->nodebug_text_symbol); | |
46bf5051 | 5542 | objfile_type->nodebug_data_symbol |
46a4882b | 5543 | = init_nodebug_var_type (objfile, "<data variable, no debug info>"); |
46bf5051 | 5544 | objfile_type->nodebug_unknown_symbol |
46a4882b | 5545 | = init_nodebug_var_type (objfile, "<variable (not text or data), no debug info>"); |
46bf5051 | 5546 | objfile_type->nodebug_tls_symbol |
46a4882b | 5547 | = init_nodebug_var_type (objfile, "<thread local variable, no debug info>"); |
000177f0 AC |
5548 | |
5549 | /* NOTE: on some targets, addresses and pointers are not necessarily | |
0a7cfe2c | 5550 | the same. |
000177f0 AC |
5551 | |
5552 | The upshot is: | |
5553 | - gdb's `struct type' always describes the target's | |
5554 | representation. | |
5555 | - gdb's `struct value' objects should always hold values in | |
5556 | target form. | |
5557 | - gdb's CORE_ADDR values are addresses in the unified virtual | |
5558 | address space that the assembler and linker work with. Thus, | |
5559 | since target_read_memory takes a CORE_ADDR as an argument, it | |
5560 | can access any memory on the target, even if the processor has | |
5561 | separate code and data address spaces. | |
5562 | ||
46bf5051 UW |
5563 | In this context, objfile_type->builtin_core_addr is a bit odd: |
5564 | it's a target type for a value the target will never see. It's | |
5565 | only used to hold the values of (typeless) linker symbols, which | |
5566 | are indeed in the unified virtual address space. */ | |
000177f0 | 5567 | |
46bf5051 | 5568 | objfile_type->builtin_core_addr |
19f392bc UW |
5569 | = init_integer_type (objfile, gdbarch_addr_bit (gdbarch), 1, |
5570 | "__CORE_ADDR"); | |
64c50499 | 5571 | |
46bf5051 UW |
5572 | set_objfile_data (objfile, objfile_type_data, objfile_type); |
5573 | return objfile_type; | |
000177f0 AC |
5574 | } |
5575 | ||
c906108c | 5576 | void |
fba45db2 | 5577 | _initialize_gdbtypes (void) |
c906108c | 5578 | { |
5674de60 | 5579 | gdbtypes_data = gdbarch_data_register_post_init (gdbtypes_post_init); |
46bf5051 | 5580 | objfile_type_data = register_objfile_data (); |
5674de60 | 5581 | |
ccce17b0 YQ |
5582 | add_setshow_zuinteger_cmd ("overload", no_class, &overload_debug, |
5583 | _("Set debugging of C++ overloading."), | |
5584 | _("Show debugging of C++ overloading."), | |
5585 | _("When enabled, ranking of the " | |
5586 | "functions is displayed."), | |
5587 | NULL, | |
5588 | show_overload_debug, | |
5589 | &setdebuglist, &showdebuglist); | |
5674de60 | 5590 | |
7ba81444 | 5591 | /* Add user knob for controlling resolution of opaque types. */ |
5674de60 | 5592 | add_setshow_boolean_cmd ("opaque-type-resolution", class_support, |
3e43a32a MS |
5593 | &opaque_type_resolution, |
5594 | _("Set resolution of opaque struct/class/union" | |
5595 | " types (if set before loading symbols)."), | |
5596 | _("Show resolution of opaque struct/class/union" | |
5597 | " types (if set before loading symbols)."), | |
5598 | NULL, NULL, | |
5674de60 UW |
5599 | show_opaque_type_resolution, |
5600 | &setlist, &showlist); | |
a451cb65 KS |
5601 | |
5602 | /* Add an option to permit non-strict type checking. */ | |
5603 | add_setshow_boolean_cmd ("type", class_support, | |
5604 | &strict_type_checking, | |
5605 | _("Set strict type checking."), | |
5606 | _("Show strict type checking."), | |
5607 | NULL, NULL, | |
5608 | show_strict_type_checking, | |
5609 | &setchecklist, &showchecklist); | |
c906108c | 5610 | } |