Commit | Line | Data |
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c906108c | 1 | /* Support routines for manipulating internal types for GDB. |
4f2aea11 | 2 | |
0b302171 | 3 | Copyright (C) 1992-1996, 1998-2012 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" | |
23 | #include "gdb_string.h" | |
24 | #include "bfd.h" | |
25 | #include "symtab.h" | |
26 | #include "symfile.h" | |
27 | #include "objfiles.h" | |
28 | #include "gdbtypes.h" | |
29 | #include "expression.h" | |
30 | #include "language.h" | |
31 | #include "target.h" | |
32 | #include "value.h" | |
33 | #include "demangle.h" | |
34 | #include "complaints.h" | |
35 | #include "gdbcmd.h" | |
015a42b4 | 36 | #include "cp-abi.h" |
a02fd225 | 37 | #include "gdb_assert.h" |
ae5a43e0 | 38 | #include "hashtab.h" |
8e7b59a5 | 39 | #include "exceptions.h" |
ac3aafc7 | 40 | |
6403aeea SW |
41 | /* Initialize BADNESS constants. */ |
42 | ||
a9d5ef47 | 43 | const struct rank LENGTH_MISMATCH_BADNESS = {100,0}; |
6403aeea | 44 | |
a9d5ef47 SW |
45 | const struct rank TOO_FEW_PARAMS_BADNESS = {100,0}; |
46 | const struct rank INCOMPATIBLE_TYPE_BADNESS = {100,0}; | |
6403aeea | 47 | |
a9d5ef47 | 48 | const struct rank EXACT_MATCH_BADNESS = {0,0}; |
6403aeea | 49 | |
a9d5ef47 SW |
50 | const struct rank INTEGER_PROMOTION_BADNESS = {1,0}; |
51 | const struct rank FLOAT_PROMOTION_BADNESS = {1,0}; | |
52 | const struct rank BASE_PTR_CONVERSION_BADNESS = {1,0}; | |
53 | const struct rank INTEGER_CONVERSION_BADNESS = {2,0}; | |
54 | const struct rank FLOAT_CONVERSION_BADNESS = {2,0}; | |
55 | const struct rank INT_FLOAT_CONVERSION_BADNESS = {2,0}; | |
56 | const struct rank VOID_PTR_CONVERSION_BADNESS = {2,0}; | |
5b4f6e25 | 57 | const struct rank BOOL_CONVERSION_BADNESS = {3,0}; |
a9d5ef47 SW |
58 | const struct rank BASE_CONVERSION_BADNESS = {2,0}; |
59 | const struct rank REFERENCE_CONVERSION_BADNESS = {2,0}; | |
da096638 | 60 | const struct rank NULL_POINTER_CONVERSION_BADNESS = {2,0}; |
a9d5ef47 | 61 | const struct rank NS_POINTER_CONVERSION_BADNESS = {10,0}; |
a451cb65 | 62 | const struct rank NS_INTEGER_POINTER_CONVERSION_BADNESS = {3,0}; |
6403aeea | 63 | |
8da61cc4 | 64 | /* Floatformat pairs. */ |
f9e9243a UW |
65 | const struct floatformat *floatformats_ieee_half[BFD_ENDIAN_UNKNOWN] = { |
66 | &floatformat_ieee_half_big, | |
67 | &floatformat_ieee_half_little | |
68 | }; | |
8da61cc4 DJ |
69 | const struct floatformat *floatformats_ieee_single[BFD_ENDIAN_UNKNOWN] = { |
70 | &floatformat_ieee_single_big, | |
71 | &floatformat_ieee_single_little | |
72 | }; | |
73 | const struct floatformat *floatformats_ieee_double[BFD_ENDIAN_UNKNOWN] = { | |
74 | &floatformat_ieee_double_big, | |
75 | &floatformat_ieee_double_little | |
76 | }; | |
77 | const struct floatformat *floatformats_ieee_double_littlebyte_bigword[BFD_ENDIAN_UNKNOWN] = { | |
78 | &floatformat_ieee_double_big, | |
79 | &floatformat_ieee_double_littlebyte_bigword | |
80 | }; | |
81 | const struct floatformat *floatformats_i387_ext[BFD_ENDIAN_UNKNOWN] = { | |
82 | &floatformat_i387_ext, | |
83 | &floatformat_i387_ext | |
84 | }; | |
85 | const struct floatformat *floatformats_m68881_ext[BFD_ENDIAN_UNKNOWN] = { | |
86 | &floatformat_m68881_ext, | |
87 | &floatformat_m68881_ext | |
88 | }; | |
89 | const struct floatformat *floatformats_arm_ext[BFD_ENDIAN_UNKNOWN] = { | |
90 | &floatformat_arm_ext_big, | |
91 | &floatformat_arm_ext_littlebyte_bigword | |
92 | }; | |
93 | const struct floatformat *floatformats_ia64_spill[BFD_ENDIAN_UNKNOWN] = { | |
94 | &floatformat_ia64_spill_big, | |
95 | &floatformat_ia64_spill_little | |
96 | }; | |
97 | const struct floatformat *floatformats_ia64_quad[BFD_ENDIAN_UNKNOWN] = { | |
98 | &floatformat_ia64_quad_big, | |
99 | &floatformat_ia64_quad_little | |
100 | }; | |
101 | const struct floatformat *floatformats_vax_f[BFD_ENDIAN_UNKNOWN] = { | |
102 | &floatformat_vax_f, | |
103 | &floatformat_vax_f | |
104 | }; | |
105 | const struct floatformat *floatformats_vax_d[BFD_ENDIAN_UNKNOWN] = { | |
106 | &floatformat_vax_d, | |
107 | &floatformat_vax_d | |
108 | }; | |
b14d30e1 JM |
109 | const struct floatformat *floatformats_ibm_long_double[BFD_ENDIAN_UNKNOWN] = { |
110 | &floatformat_ibm_long_double, | |
111 | &floatformat_ibm_long_double | |
112 | }; | |
8da61cc4 | 113 | |
2873700e KS |
114 | /* Should opaque types be resolved? */ |
115 | ||
116 | static int opaque_type_resolution = 1; | |
117 | ||
118 | /* A flag to enable printing of debugging information of C++ | |
119 | overloading. */ | |
120 | ||
121 | unsigned int overload_debug = 0; | |
122 | ||
a451cb65 KS |
123 | /* A flag to enable strict type checking. */ |
124 | ||
125 | static int strict_type_checking = 1; | |
126 | ||
2873700e | 127 | /* A function to show whether opaque types are resolved. */ |
5212577a | 128 | |
920d2a44 AC |
129 | static void |
130 | show_opaque_type_resolution (struct ui_file *file, int from_tty, | |
7ba81444 MS |
131 | struct cmd_list_element *c, |
132 | const char *value) | |
920d2a44 | 133 | { |
3e43a32a MS |
134 | fprintf_filtered (file, _("Resolution of opaque struct/class/union types " |
135 | "(if set before loading symbols) is %s.\n"), | |
920d2a44 AC |
136 | value); |
137 | } | |
138 | ||
2873700e | 139 | /* A function to show whether C++ overload debugging is enabled. */ |
5212577a | 140 | |
920d2a44 AC |
141 | static void |
142 | show_overload_debug (struct ui_file *file, int from_tty, | |
143 | struct cmd_list_element *c, const char *value) | |
144 | { | |
7ba81444 MS |
145 | fprintf_filtered (file, _("Debugging of C++ overloading is %s.\n"), |
146 | value); | |
920d2a44 | 147 | } |
c906108c | 148 | |
a451cb65 KS |
149 | /* A function to show the status of strict type checking. */ |
150 | ||
151 | static void | |
152 | show_strict_type_checking (struct ui_file *file, int from_tty, | |
153 | struct cmd_list_element *c, const char *value) | |
154 | { | |
155 | fprintf_filtered (file, _("Strict type checking is %s.\n"), value); | |
156 | } | |
157 | ||
5212577a | 158 | \f |
e9bb382b UW |
159 | /* Allocate a new OBJFILE-associated type structure and fill it |
160 | with some defaults. Space for the type structure is allocated | |
161 | on the objfile's objfile_obstack. */ | |
c906108c SS |
162 | |
163 | struct type * | |
fba45db2 | 164 | alloc_type (struct objfile *objfile) |
c906108c | 165 | { |
52f0bd74 | 166 | struct type *type; |
c906108c | 167 | |
e9bb382b UW |
168 | gdb_assert (objfile != NULL); |
169 | ||
7ba81444 | 170 | /* Alloc the structure and start off with all fields zeroed. */ |
e9bb382b UW |
171 | type = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct type); |
172 | TYPE_MAIN_TYPE (type) = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
173 | struct main_type); | |
174 | OBJSTAT (objfile, n_types++); | |
c906108c | 175 | |
e9bb382b UW |
176 | TYPE_OBJFILE_OWNED (type) = 1; |
177 | TYPE_OWNER (type).objfile = objfile; | |
c906108c | 178 | |
7ba81444 | 179 | /* Initialize the fields that might not be zero. */ |
c906108c SS |
180 | |
181 | TYPE_CODE (type) = TYPE_CODE_UNDEF; | |
c906108c | 182 | TYPE_VPTR_FIELDNO (type) = -1; |
2fdde8f8 | 183 | TYPE_CHAIN (type) = type; /* Chain back to itself. */ |
c906108c | 184 | |
c16abbde | 185 | return type; |
c906108c SS |
186 | } |
187 | ||
e9bb382b UW |
188 | /* Allocate a new GDBARCH-associated type structure and fill it |
189 | with some defaults. Space for the type structure is allocated | |
190 | on the heap. */ | |
191 | ||
192 | struct type * | |
193 | alloc_type_arch (struct gdbarch *gdbarch) | |
194 | { | |
195 | struct type *type; | |
196 | ||
197 | gdb_assert (gdbarch != NULL); | |
198 | ||
199 | /* Alloc the structure and start off with all fields zeroed. */ | |
200 | ||
201 | type = XZALLOC (struct type); | |
202 | TYPE_MAIN_TYPE (type) = XZALLOC (struct main_type); | |
203 | ||
204 | TYPE_OBJFILE_OWNED (type) = 0; | |
205 | TYPE_OWNER (type).gdbarch = gdbarch; | |
206 | ||
207 | /* Initialize the fields that might not be zero. */ | |
208 | ||
209 | TYPE_CODE (type) = TYPE_CODE_UNDEF; | |
210 | TYPE_VPTR_FIELDNO (type) = -1; | |
211 | TYPE_CHAIN (type) = type; /* Chain back to itself. */ | |
212 | ||
213 | return type; | |
214 | } | |
215 | ||
216 | /* If TYPE is objfile-associated, allocate a new type structure | |
217 | associated with the same objfile. If TYPE is gdbarch-associated, | |
218 | allocate a new type structure associated with the same gdbarch. */ | |
219 | ||
220 | struct type * | |
221 | alloc_type_copy (const struct type *type) | |
222 | { | |
223 | if (TYPE_OBJFILE_OWNED (type)) | |
224 | return alloc_type (TYPE_OWNER (type).objfile); | |
225 | else | |
226 | return alloc_type_arch (TYPE_OWNER (type).gdbarch); | |
227 | } | |
228 | ||
229 | /* If TYPE is gdbarch-associated, return that architecture. | |
230 | If TYPE is objfile-associated, return that objfile's architecture. */ | |
231 | ||
232 | struct gdbarch * | |
233 | get_type_arch (const struct type *type) | |
234 | { | |
235 | if (TYPE_OBJFILE_OWNED (type)) | |
236 | return get_objfile_arch (TYPE_OWNER (type).objfile); | |
237 | else | |
238 | return TYPE_OWNER (type).gdbarch; | |
239 | } | |
240 | ||
2fdde8f8 DJ |
241 | /* Alloc a new type instance structure, fill it with some defaults, |
242 | and point it at OLDTYPE. Allocate the new type instance from the | |
243 | same place as OLDTYPE. */ | |
244 | ||
245 | static struct type * | |
246 | alloc_type_instance (struct type *oldtype) | |
247 | { | |
248 | struct type *type; | |
249 | ||
250 | /* Allocate the structure. */ | |
251 | ||
e9bb382b | 252 | if (! TYPE_OBJFILE_OWNED (oldtype)) |
1deafd4e | 253 | type = XZALLOC (struct type); |
2fdde8f8 | 254 | else |
1deafd4e PA |
255 | type = OBSTACK_ZALLOC (&TYPE_OBJFILE (oldtype)->objfile_obstack, |
256 | struct type); | |
257 | ||
2fdde8f8 DJ |
258 | TYPE_MAIN_TYPE (type) = TYPE_MAIN_TYPE (oldtype); |
259 | ||
260 | TYPE_CHAIN (type) = type; /* Chain back to itself for now. */ | |
261 | ||
c16abbde | 262 | return type; |
2fdde8f8 DJ |
263 | } |
264 | ||
265 | /* Clear all remnants of the previous type at TYPE, in preparation for | |
e9bb382b | 266 | replacing it with something else. Preserve owner information. */ |
5212577a | 267 | |
2fdde8f8 DJ |
268 | static void |
269 | smash_type (struct type *type) | |
270 | { | |
e9bb382b UW |
271 | int objfile_owned = TYPE_OBJFILE_OWNED (type); |
272 | union type_owner owner = TYPE_OWNER (type); | |
273 | ||
2fdde8f8 DJ |
274 | memset (TYPE_MAIN_TYPE (type), 0, sizeof (struct main_type)); |
275 | ||
e9bb382b UW |
276 | /* Restore owner information. */ |
277 | TYPE_OBJFILE_OWNED (type) = objfile_owned; | |
278 | TYPE_OWNER (type) = owner; | |
279 | ||
2fdde8f8 DJ |
280 | /* For now, delete the rings. */ |
281 | TYPE_CHAIN (type) = type; | |
282 | ||
283 | /* For now, leave the pointer/reference types alone. */ | |
284 | } | |
285 | ||
c906108c SS |
286 | /* Lookup a pointer to a type TYPE. TYPEPTR, if nonzero, points |
287 | to a pointer to memory where the pointer type should be stored. | |
288 | If *TYPEPTR is zero, update it to point to the pointer type we return. | |
289 | We allocate new memory if needed. */ | |
290 | ||
291 | struct type * | |
fba45db2 | 292 | make_pointer_type (struct type *type, struct type **typeptr) |
c906108c | 293 | { |
52f0bd74 | 294 | struct type *ntype; /* New type */ |
053cb41b | 295 | struct type *chain; |
c906108c SS |
296 | |
297 | ntype = TYPE_POINTER_TYPE (type); | |
298 | ||
c5aa993b | 299 | if (ntype) |
c906108c | 300 | { |
c5aa993b | 301 | if (typeptr == 0) |
7ba81444 MS |
302 | return ntype; /* Don't care about alloc, |
303 | and have new type. */ | |
c906108c | 304 | else if (*typeptr == 0) |
c5aa993b | 305 | { |
7ba81444 | 306 | *typeptr = ntype; /* Tracking alloc, and have new type. */ |
c906108c | 307 | return ntype; |
c5aa993b | 308 | } |
c906108c SS |
309 | } |
310 | ||
311 | if (typeptr == 0 || *typeptr == 0) /* We'll need to allocate one. */ | |
312 | { | |
e9bb382b | 313 | ntype = alloc_type_copy (type); |
c906108c SS |
314 | if (typeptr) |
315 | *typeptr = ntype; | |
316 | } | |
7ba81444 | 317 | else /* We have storage, but need to reset it. */ |
c906108c SS |
318 | { |
319 | ntype = *typeptr; | |
053cb41b | 320 | chain = TYPE_CHAIN (ntype); |
2fdde8f8 | 321 | smash_type (ntype); |
053cb41b | 322 | TYPE_CHAIN (ntype) = chain; |
c906108c SS |
323 | } |
324 | ||
325 | TYPE_TARGET_TYPE (ntype) = type; | |
326 | TYPE_POINTER_TYPE (type) = ntype; | |
327 | ||
5212577a | 328 | /* FIXME! Assumes the machine has only one representation for pointers! */ |
c906108c | 329 | |
50810684 UW |
330 | TYPE_LENGTH (ntype) |
331 | = gdbarch_ptr_bit (get_type_arch (type)) / TARGET_CHAR_BIT; | |
c906108c SS |
332 | TYPE_CODE (ntype) = TYPE_CODE_PTR; |
333 | ||
67b2adb2 | 334 | /* Mark pointers as unsigned. The target converts between pointers |
76e71323 | 335 | and addresses (CORE_ADDRs) using gdbarch_pointer_to_address and |
7ba81444 | 336 | gdbarch_address_to_pointer. */ |
876cecd0 | 337 | TYPE_UNSIGNED (ntype) = 1; |
c5aa993b | 338 | |
053cb41b JB |
339 | /* Update the length of all the other variants of this type. */ |
340 | chain = TYPE_CHAIN (ntype); | |
341 | while (chain != ntype) | |
342 | { | |
343 | TYPE_LENGTH (chain) = TYPE_LENGTH (ntype); | |
344 | chain = TYPE_CHAIN (chain); | |
345 | } | |
346 | ||
c906108c SS |
347 | return ntype; |
348 | } | |
349 | ||
350 | /* Given a type TYPE, return a type of pointers to that type. | |
351 | May need to construct such a type if this is the first use. */ | |
352 | ||
353 | struct type * | |
fba45db2 | 354 | lookup_pointer_type (struct type *type) |
c906108c | 355 | { |
c5aa993b | 356 | return make_pointer_type (type, (struct type **) 0); |
c906108c SS |
357 | } |
358 | ||
7ba81444 MS |
359 | /* Lookup a C++ `reference' to a type TYPE. TYPEPTR, if nonzero, |
360 | points to a pointer to memory where the reference type should be | |
361 | stored. If *TYPEPTR is zero, update it to point to the reference | |
362 | type we return. We allocate new memory if needed. */ | |
c906108c SS |
363 | |
364 | struct type * | |
fba45db2 | 365 | make_reference_type (struct type *type, struct type **typeptr) |
c906108c | 366 | { |
52f0bd74 | 367 | struct type *ntype; /* New type */ |
1e98b326 | 368 | struct type *chain; |
c906108c SS |
369 | |
370 | ntype = TYPE_REFERENCE_TYPE (type); | |
371 | ||
c5aa993b | 372 | if (ntype) |
c906108c | 373 | { |
c5aa993b | 374 | if (typeptr == 0) |
7ba81444 MS |
375 | return ntype; /* Don't care about alloc, |
376 | and have new type. */ | |
c906108c | 377 | else if (*typeptr == 0) |
c5aa993b | 378 | { |
7ba81444 | 379 | *typeptr = ntype; /* Tracking alloc, and have new type. */ |
c906108c | 380 | return ntype; |
c5aa993b | 381 | } |
c906108c SS |
382 | } |
383 | ||
384 | if (typeptr == 0 || *typeptr == 0) /* We'll need to allocate one. */ | |
385 | { | |
e9bb382b | 386 | ntype = alloc_type_copy (type); |
c906108c SS |
387 | if (typeptr) |
388 | *typeptr = ntype; | |
389 | } | |
7ba81444 | 390 | else /* We have storage, but need to reset it. */ |
c906108c SS |
391 | { |
392 | ntype = *typeptr; | |
1e98b326 | 393 | chain = TYPE_CHAIN (ntype); |
2fdde8f8 | 394 | smash_type (ntype); |
1e98b326 | 395 | TYPE_CHAIN (ntype) = chain; |
c906108c SS |
396 | } |
397 | ||
398 | TYPE_TARGET_TYPE (ntype) = type; | |
399 | TYPE_REFERENCE_TYPE (type) = ntype; | |
400 | ||
7ba81444 MS |
401 | /* FIXME! Assume the machine has only one representation for |
402 | references, and that it matches the (only) representation for | |
403 | pointers! */ | |
c906108c | 404 | |
50810684 UW |
405 | TYPE_LENGTH (ntype) = |
406 | gdbarch_ptr_bit (get_type_arch (type)) / TARGET_CHAR_BIT; | |
c906108c | 407 | TYPE_CODE (ntype) = TYPE_CODE_REF; |
c5aa993b | 408 | |
c906108c SS |
409 | if (!TYPE_REFERENCE_TYPE (type)) /* Remember it, if don't have one. */ |
410 | TYPE_REFERENCE_TYPE (type) = ntype; | |
411 | ||
1e98b326 JB |
412 | /* Update the length of all the other variants of this type. */ |
413 | chain = TYPE_CHAIN (ntype); | |
414 | while (chain != ntype) | |
415 | { | |
416 | TYPE_LENGTH (chain) = TYPE_LENGTH (ntype); | |
417 | chain = TYPE_CHAIN (chain); | |
418 | } | |
419 | ||
c906108c SS |
420 | return ntype; |
421 | } | |
422 | ||
7ba81444 MS |
423 | /* Same as above, but caller doesn't care about memory allocation |
424 | details. */ | |
c906108c SS |
425 | |
426 | struct type * | |
fba45db2 | 427 | lookup_reference_type (struct type *type) |
c906108c | 428 | { |
c5aa993b | 429 | return make_reference_type (type, (struct type **) 0); |
c906108c SS |
430 | } |
431 | ||
7ba81444 MS |
432 | /* Lookup a function type that returns type TYPE. TYPEPTR, if |
433 | nonzero, points to a pointer to memory where the function type | |
434 | should be stored. If *TYPEPTR is zero, update it to point to the | |
0c8b41f1 | 435 | function type we return. We allocate new memory if needed. */ |
c906108c SS |
436 | |
437 | struct type * | |
0c8b41f1 | 438 | make_function_type (struct type *type, struct type **typeptr) |
c906108c | 439 | { |
52f0bd74 | 440 | struct type *ntype; /* New type */ |
c906108c SS |
441 | |
442 | if (typeptr == 0 || *typeptr == 0) /* We'll need to allocate one. */ | |
443 | { | |
e9bb382b | 444 | ntype = alloc_type_copy (type); |
c906108c SS |
445 | if (typeptr) |
446 | *typeptr = ntype; | |
447 | } | |
7ba81444 | 448 | else /* We have storage, but need to reset it. */ |
c906108c SS |
449 | { |
450 | ntype = *typeptr; | |
2fdde8f8 | 451 | smash_type (ntype); |
c906108c SS |
452 | } |
453 | ||
454 | TYPE_TARGET_TYPE (ntype) = type; | |
455 | ||
456 | TYPE_LENGTH (ntype) = 1; | |
457 | TYPE_CODE (ntype) = TYPE_CODE_FUNC; | |
c5aa993b | 458 | |
b6cdc2c1 JK |
459 | INIT_FUNC_SPECIFIC (ntype); |
460 | ||
c906108c SS |
461 | return ntype; |
462 | } | |
463 | ||
c906108c SS |
464 | /* Given a type TYPE, return a type of functions that return that type. |
465 | May need to construct such a type if this is the first use. */ | |
466 | ||
467 | struct type * | |
fba45db2 | 468 | lookup_function_type (struct type *type) |
c906108c | 469 | { |
0c8b41f1 | 470 | return make_function_type (type, (struct type **) 0); |
c906108c SS |
471 | } |
472 | ||
71918a86 | 473 | /* Given a type TYPE and argument types, return the appropriate |
a6fb9c08 TT |
474 | function type. If the final type in PARAM_TYPES is NULL, make a |
475 | varargs function. */ | |
71918a86 TT |
476 | |
477 | struct type * | |
478 | lookup_function_type_with_arguments (struct type *type, | |
479 | int nparams, | |
480 | struct type **param_types) | |
481 | { | |
482 | struct type *fn = make_function_type (type, (struct type **) 0); | |
483 | int i; | |
484 | ||
e314d629 | 485 | if (nparams > 0) |
a6fb9c08 | 486 | { |
e314d629 TT |
487 | if (param_types[nparams - 1] == NULL) |
488 | { | |
489 | --nparams; | |
490 | TYPE_VARARGS (fn) = 1; | |
491 | } | |
492 | else if (TYPE_CODE (check_typedef (param_types[nparams - 1])) | |
493 | == TYPE_CODE_VOID) | |
494 | { | |
495 | --nparams; | |
496 | /* Caller should have ensured this. */ | |
497 | gdb_assert (nparams == 0); | |
498 | TYPE_PROTOTYPED (fn) = 1; | |
499 | } | |
a6fb9c08 TT |
500 | } |
501 | ||
71918a86 TT |
502 | TYPE_NFIELDS (fn) = nparams; |
503 | TYPE_FIELDS (fn) = TYPE_ZALLOC (fn, nparams * sizeof (struct field)); | |
504 | for (i = 0; i < nparams; ++i) | |
505 | TYPE_FIELD_TYPE (fn, i) = param_types[i]; | |
506 | ||
507 | return fn; | |
508 | } | |
509 | ||
47663de5 MS |
510 | /* Identify address space identifier by name -- |
511 | return the integer flag defined in gdbtypes.h. */ | |
5212577a DE |
512 | |
513 | int | |
50810684 | 514 | address_space_name_to_int (struct gdbarch *gdbarch, char *space_identifier) |
47663de5 | 515 | { |
8b2dbe47 | 516 | int type_flags; |
d8734c88 | 517 | |
7ba81444 | 518 | /* Check for known address space delimiters. */ |
47663de5 | 519 | if (!strcmp (space_identifier, "code")) |
876cecd0 | 520 | return TYPE_INSTANCE_FLAG_CODE_SPACE; |
47663de5 | 521 | else if (!strcmp (space_identifier, "data")) |
876cecd0 | 522 | return TYPE_INSTANCE_FLAG_DATA_SPACE; |
5f11f355 AC |
523 | else if (gdbarch_address_class_name_to_type_flags_p (gdbarch) |
524 | && gdbarch_address_class_name_to_type_flags (gdbarch, | |
525 | space_identifier, | |
526 | &type_flags)) | |
8b2dbe47 | 527 | return type_flags; |
47663de5 | 528 | else |
8a3fe4f8 | 529 | error (_("Unknown address space specifier: \"%s\""), space_identifier); |
47663de5 MS |
530 | } |
531 | ||
532 | /* Identify address space identifier by integer flag as defined in | |
7ba81444 | 533 | gdbtypes.h -- return the string version of the adress space name. */ |
47663de5 | 534 | |
321432c0 | 535 | const char * |
50810684 | 536 | address_space_int_to_name (struct gdbarch *gdbarch, int space_flag) |
47663de5 | 537 | { |
876cecd0 | 538 | if (space_flag & TYPE_INSTANCE_FLAG_CODE_SPACE) |
47663de5 | 539 | return "code"; |
876cecd0 | 540 | else if (space_flag & TYPE_INSTANCE_FLAG_DATA_SPACE) |
47663de5 | 541 | return "data"; |
876cecd0 | 542 | else if ((space_flag & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
5f11f355 AC |
543 | && gdbarch_address_class_type_flags_to_name_p (gdbarch)) |
544 | return gdbarch_address_class_type_flags_to_name (gdbarch, space_flag); | |
47663de5 MS |
545 | else |
546 | return NULL; | |
547 | } | |
548 | ||
2fdde8f8 | 549 | /* Create a new type with instance flags NEW_FLAGS, based on TYPE. |
ad766c0a JB |
550 | |
551 | If STORAGE is non-NULL, create the new type instance there. | |
552 | STORAGE must be in the same obstack as TYPE. */ | |
47663de5 | 553 | |
b9362cc7 | 554 | static struct type * |
2fdde8f8 DJ |
555 | make_qualified_type (struct type *type, int new_flags, |
556 | struct type *storage) | |
47663de5 MS |
557 | { |
558 | struct type *ntype; | |
559 | ||
560 | ntype = type; | |
5f61c20e JK |
561 | do |
562 | { | |
563 | if (TYPE_INSTANCE_FLAGS (ntype) == new_flags) | |
564 | return ntype; | |
565 | ntype = TYPE_CHAIN (ntype); | |
566 | } | |
567 | while (ntype != type); | |
47663de5 | 568 | |
2fdde8f8 DJ |
569 | /* Create a new type instance. */ |
570 | if (storage == NULL) | |
571 | ntype = alloc_type_instance (type); | |
572 | else | |
573 | { | |
7ba81444 MS |
574 | /* If STORAGE was provided, it had better be in the same objfile |
575 | as TYPE. Otherwise, we can't link it into TYPE's cv chain: | |
576 | if one objfile is freed and the other kept, we'd have | |
577 | dangling pointers. */ | |
ad766c0a JB |
578 | gdb_assert (TYPE_OBJFILE (type) == TYPE_OBJFILE (storage)); |
579 | ||
2fdde8f8 DJ |
580 | ntype = storage; |
581 | TYPE_MAIN_TYPE (ntype) = TYPE_MAIN_TYPE (type); | |
582 | TYPE_CHAIN (ntype) = ntype; | |
583 | } | |
47663de5 MS |
584 | |
585 | /* Pointers or references to the original type are not relevant to | |
2fdde8f8 | 586 | the new type. */ |
47663de5 MS |
587 | TYPE_POINTER_TYPE (ntype) = (struct type *) 0; |
588 | TYPE_REFERENCE_TYPE (ntype) = (struct type *) 0; | |
47663de5 | 589 | |
2fdde8f8 DJ |
590 | /* Chain the new qualified type to the old type. */ |
591 | TYPE_CHAIN (ntype) = TYPE_CHAIN (type); | |
592 | TYPE_CHAIN (type) = ntype; | |
593 | ||
594 | /* Now set the instance flags and return the new type. */ | |
595 | TYPE_INSTANCE_FLAGS (ntype) = new_flags; | |
47663de5 | 596 | |
ab5d3da6 KB |
597 | /* Set length of new type to that of the original type. */ |
598 | TYPE_LENGTH (ntype) = TYPE_LENGTH (type); | |
599 | ||
47663de5 MS |
600 | return ntype; |
601 | } | |
602 | ||
2fdde8f8 DJ |
603 | /* Make an address-space-delimited variant of a type -- a type that |
604 | is identical to the one supplied except that it has an address | |
605 | space attribute attached to it (such as "code" or "data"). | |
606 | ||
7ba81444 MS |
607 | The space attributes "code" and "data" are for Harvard |
608 | architectures. The address space attributes are for architectures | |
609 | which have alternately sized pointers or pointers with alternate | |
610 | representations. */ | |
2fdde8f8 DJ |
611 | |
612 | struct type * | |
613 | make_type_with_address_space (struct type *type, int space_flag) | |
614 | { | |
2fdde8f8 | 615 | int new_flags = ((TYPE_INSTANCE_FLAGS (type) |
876cecd0 TT |
616 | & ~(TYPE_INSTANCE_FLAG_CODE_SPACE |
617 | | TYPE_INSTANCE_FLAG_DATA_SPACE | |
618 | | TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL)) | |
2fdde8f8 DJ |
619 | | space_flag); |
620 | ||
621 | return make_qualified_type (type, new_flags, NULL); | |
622 | } | |
c906108c SS |
623 | |
624 | /* Make a "c-v" variant of a type -- a type that is identical to the | |
625 | one supplied except that it may have const or volatile attributes | |
626 | CNST is a flag for setting the const attribute | |
627 | VOLTL is a flag for setting the volatile attribute | |
628 | TYPE is the base type whose variant we are creating. | |
c906108c | 629 | |
ad766c0a JB |
630 | If TYPEPTR and *TYPEPTR are non-zero, then *TYPEPTR points to |
631 | storage to hold the new qualified type; *TYPEPTR and TYPE must be | |
632 | in the same objfile. Otherwise, allocate fresh memory for the new | |
633 | type whereever TYPE lives. If TYPEPTR is non-zero, set it to the | |
634 | new type we construct. */ | |
5212577a | 635 | |
c906108c | 636 | struct type * |
7ba81444 MS |
637 | make_cv_type (int cnst, int voltl, |
638 | struct type *type, | |
639 | struct type **typeptr) | |
c906108c | 640 | { |
52f0bd74 | 641 | struct type *ntype; /* New type */ |
c906108c | 642 | |
2fdde8f8 | 643 | int new_flags = (TYPE_INSTANCE_FLAGS (type) |
308d96ed MS |
644 | & ~(TYPE_INSTANCE_FLAG_CONST |
645 | | TYPE_INSTANCE_FLAG_VOLATILE)); | |
c906108c | 646 | |
c906108c | 647 | if (cnst) |
876cecd0 | 648 | new_flags |= TYPE_INSTANCE_FLAG_CONST; |
c906108c SS |
649 | |
650 | if (voltl) | |
876cecd0 | 651 | new_flags |= TYPE_INSTANCE_FLAG_VOLATILE; |
a02fd225 | 652 | |
2fdde8f8 | 653 | if (typeptr && *typeptr != NULL) |
a02fd225 | 654 | { |
ad766c0a JB |
655 | /* TYPE and *TYPEPTR must be in the same objfile. We can't have |
656 | a C-V variant chain that threads across objfiles: if one | |
657 | objfile gets freed, then the other has a broken C-V chain. | |
658 | ||
659 | This code used to try to copy over the main type from TYPE to | |
660 | *TYPEPTR if they were in different objfiles, but that's | |
661 | wrong, too: TYPE may have a field list or member function | |
662 | lists, which refer to types of their own, etc. etc. The | |
663 | whole shebang would need to be copied over recursively; you | |
664 | can't have inter-objfile pointers. The only thing to do is | |
665 | to leave stub types as stub types, and look them up afresh by | |
666 | name each time you encounter them. */ | |
667 | gdb_assert (TYPE_OBJFILE (*typeptr) == TYPE_OBJFILE (type)); | |
2fdde8f8 DJ |
668 | } |
669 | ||
7ba81444 MS |
670 | ntype = make_qualified_type (type, new_flags, |
671 | typeptr ? *typeptr : NULL); | |
c906108c | 672 | |
2fdde8f8 DJ |
673 | if (typeptr != NULL) |
674 | *typeptr = ntype; | |
a02fd225 | 675 | |
2fdde8f8 | 676 | return ntype; |
a02fd225 | 677 | } |
c906108c | 678 | |
2fdde8f8 DJ |
679 | /* Replace the contents of ntype with the type *type. This changes the |
680 | contents, rather than the pointer for TYPE_MAIN_TYPE (ntype); thus | |
681 | the changes are propogated to all types in the TYPE_CHAIN. | |
dd6bda65 | 682 | |
cda6c68a JB |
683 | In order to build recursive types, it's inevitable that we'll need |
684 | to update types in place --- but this sort of indiscriminate | |
685 | smashing is ugly, and needs to be replaced with something more | |
2fdde8f8 DJ |
686 | controlled. TYPE_MAIN_TYPE is a step in this direction; it's not |
687 | clear if more steps are needed. */ | |
5212577a | 688 | |
dd6bda65 DJ |
689 | void |
690 | replace_type (struct type *ntype, struct type *type) | |
691 | { | |
ab5d3da6 | 692 | struct type *chain; |
dd6bda65 | 693 | |
ad766c0a JB |
694 | /* These two types had better be in the same objfile. Otherwise, |
695 | the assignment of one type's main type structure to the other | |
696 | will produce a type with references to objects (names; field | |
697 | lists; etc.) allocated on an objfile other than its own. */ | |
698 | gdb_assert (TYPE_OBJFILE (ntype) == TYPE_OBJFILE (ntype)); | |
699 | ||
2fdde8f8 | 700 | *TYPE_MAIN_TYPE (ntype) = *TYPE_MAIN_TYPE (type); |
dd6bda65 | 701 | |
7ba81444 MS |
702 | /* The type length is not a part of the main type. Update it for |
703 | each type on the variant chain. */ | |
ab5d3da6 | 704 | chain = ntype; |
5f61c20e JK |
705 | do |
706 | { | |
707 | /* Assert that this element of the chain has no address-class bits | |
708 | set in its flags. Such type variants might have type lengths | |
709 | which are supposed to be different from the non-address-class | |
710 | variants. This assertion shouldn't ever be triggered because | |
711 | symbol readers which do construct address-class variants don't | |
712 | call replace_type(). */ | |
713 | gdb_assert (TYPE_ADDRESS_CLASS_ALL (chain) == 0); | |
714 | ||
715 | TYPE_LENGTH (chain) = TYPE_LENGTH (type); | |
716 | chain = TYPE_CHAIN (chain); | |
717 | } | |
718 | while (ntype != chain); | |
ab5d3da6 | 719 | |
2fdde8f8 DJ |
720 | /* Assert that the two types have equivalent instance qualifiers. |
721 | This should be true for at least all of our debug readers. */ | |
722 | gdb_assert (TYPE_INSTANCE_FLAGS (ntype) == TYPE_INSTANCE_FLAGS (type)); | |
dd6bda65 DJ |
723 | } |
724 | ||
c906108c SS |
725 | /* Implement direct support for MEMBER_TYPE in GNU C++. |
726 | May need to construct such a type if this is the first use. | |
727 | The TYPE is the type of the member. The DOMAIN is the type | |
728 | of the aggregate that the member belongs to. */ | |
729 | ||
730 | struct type * | |
0d5de010 | 731 | lookup_memberptr_type (struct type *type, struct type *domain) |
c906108c | 732 | { |
52f0bd74 | 733 | struct type *mtype; |
c906108c | 734 | |
e9bb382b | 735 | mtype = alloc_type_copy (type); |
0d5de010 | 736 | smash_to_memberptr_type (mtype, domain, type); |
c16abbde | 737 | return mtype; |
c906108c SS |
738 | } |
739 | ||
0d5de010 DJ |
740 | /* Return a pointer-to-method type, for a method of type TO_TYPE. */ |
741 | ||
742 | struct type * | |
743 | lookup_methodptr_type (struct type *to_type) | |
744 | { | |
745 | struct type *mtype; | |
746 | ||
e9bb382b | 747 | mtype = alloc_type_copy (to_type); |
0b92b5bb | 748 | smash_to_methodptr_type (mtype, to_type); |
0d5de010 DJ |
749 | return mtype; |
750 | } | |
751 | ||
7ba81444 MS |
752 | /* Allocate a stub method whose return type is TYPE. This apparently |
753 | happens for speed of symbol reading, since parsing out the | |
754 | arguments to the method is cpu-intensive, the way we are doing it. | |
755 | So, we will fill in arguments later. This always returns a fresh | |
756 | type. */ | |
c906108c SS |
757 | |
758 | struct type * | |
fba45db2 | 759 | allocate_stub_method (struct type *type) |
c906108c SS |
760 | { |
761 | struct type *mtype; | |
762 | ||
e9bb382b UW |
763 | mtype = alloc_type_copy (type); |
764 | TYPE_CODE (mtype) = TYPE_CODE_METHOD; | |
765 | TYPE_LENGTH (mtype) = 1; | |
766 | TYPE_STUB (mtype) = 1; | |
c906108c SS |
767 | TYPE_TARGET_TYPE (mtype) = type; |
768 | /* _DOMAIN_TYPE (mtype) = unknown yet */ | |
c16abbde | 769 | return mtype; |
c906108c SS |
770 | } |
771 | ||
7ba81444 MS |
772 | /* Create a range type using either a blank type supplied in |
773 | RESULT_TYPE, or creating a new type, inheriting the objfile from | |
774 | INDEX_TYPE. | |
c906108c | 775 | |
7ba81444 MS |
776 | Indices will be of type INDEX_TYPE, and will range from LOW_BOUND |
777 | to HIGH_BOUND, inclusive. | |
c906108c | 778 | |
7ba81444 MS |
779 | FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make |
780 | sure it is TYPE_CODE_UNDEF before we bash it into a range type? */ | |
c906108c SS |
781 | |
782 | struct type * | |
fba45db2 | 783 | create_range_type (struct type *result_type, struct type *index_type, |
43bbcdc2 | 784 | LONGEST low_bound, LONGEST high_bound) |
c906108c SS |
785 | { |
786 | if (result_type == NULL) | |
e9bb382b | 787 | result_type = alloc_type_copy (index_type); |
c906108c SS |
788 | TYPE_CODE (result_type) = TYPE_CODE_RANGE; |
789 | TYPE_TARGET_TYPE (result_type) = index_type; | |
74a9bb82 | 790 | if (TYPE_STUB (index_type)) |
876cecd0 | 791 | TYPE_TARGET_STUB (result_type) = 1; |
c906108c SS |
792 | else |
793 | TYPE_LENGTH (result_type) = TYPE_LENGTH (check_typedef (index_type)); | |
43bbcdc2 PH |
794 | TYPE_RANGE_DATA (result_type) = (struct range_bounds *) |
795 | TYPE_ZALLOC (result_type, sizeof (struct range_bounds)); | |
262452ec JK |
796 | TYPE_LOW_BOUND (result_type) = low_bound; |
797 | TYPE_HIGH_BOUND (result_type) = high_bound; | |
c906108c | 798 | |
c5aa993b | 799 | if (low_bound >= 0) |
876cecd0 | 800 | TYPE_UNSIGNED (result_type) = 1; |
c906108c | 801 | |
262452ec | 802 | return result_type; |
c906108c SS |
803 | } |
804 | ||
7ba81444 MS |
805 | /* Set *LOWP and *HIGHP to the lower and upper bounds of discrete type |
806 | TYPE. Return 1 if type is a range type, 0 if it is discrete (and | |
807 | bounds will fit in LONGEST), or -1 otherwise. */ | |
c906108c SS |
808 | |
809 | int | |
fba45db2 | 810 | get_discrete_bounds (struct type *type, LONGEST *lowp, LONGEST *highp) |
c906108c SS |
811 | { |
812 | CHECK_TYPEDEF (type); | |
813 | switch (TYPE_CODE (type)) | |
814 | { | |
815 | case TYPE_CODE_RANGE: | |
816 | *lowp = TYPE_LOW_BOUND (type); | |
817 | *highp = TYPE_HIGH_BOUND (type); | |
818 | return 1; | |
819 | case TYPE_CODE_ENUM: | |
820 | if (TYPE_NFIELDS (type) > 0) | |
821 | { | |
822 | /* The enums may not be sorted by value, so search all | |
0963b4bd | 823 | entries. */ |
c906108c SS |
824 | int i; |
825 | ||
14e75d8e | 826 | *lowp = *highp = TYPE_FIELD_ENUMVAL (type, 0); |
c906108c SS |
827 | for (i = 0; i < TYPE_NFIELDS (type); i++) |
828 | { | |
14e75d8e JK |
829 | if (TYPE_FIELD_ENUMVAL (type, i) < *lowp) |
830 | *lowp = TYPE_FIELD_ENUMVAL (type, i); | |
831 | if (TYPE_FIELD_ENUMVAL (type, i) > *highp) | |
832 | *highp = TYPE_FIELD_ENUMVAL (type, i); | |
c906108c SS |
833 | } |
834 | ||
7ba81444 | 835 | /* Set unsigned indicator if warranted. */ |
c5aa993b | 836 | if (*lowp >= 0) |
c906108c | 837 | { |
876cecd0 | 838 | TYPE_UNSIGNED (type) = 1; |
c906108c SS |
839 | } |
840 | } | |
841 | else | |
842 | { | |
843 | *lowp = 0; | |
844 | *highp = -1; | |
845 | } | |
846 | return 0; | |
847 | case TYPE_CODE_BOOL: | |
848 | *lowp = 0; | |
849 | *highp = 1; | |
850 | return 0; | |
851 | case TYPE_CODE_INT: | |
c5aa993b | 852 | if (TYPE_LENGTH (type) > sizeof (LONGEST)) /* Too big */ |
c906108c SS |
853 | return -1; |
854 | if (!TYPE_UNSIGNED (type)) | |
855 | { | |
c5aa993b | 856 | *lowp = -(1 << (TYPE_LENGTH (type) * TARGET_CHAR_BIT - 1)); |
c906108c SS |
857 | *highp = -*lowp - 1; |
858 | return 0; | |
859 | } | |
7ba81444 | 860 | /* ... fall through for unsigned ints ... */ |
c906108c SS |
861 | case TYPE_CODE_CHAR: |
862 | *lowp = 0; | |
863 | /* This round-about calculation is to avoid shifting by | |
7b83ea04 | 864 | TYPE_LENGTH (type) * TARGET_CHAR_BIT, which will not work |
7ba81444 | 865 | if TYPE_LENGTH (type) == sizeof (LONGEST). */ |
c906108c SS |
866 | *highp = 1 << (TYPE_LENGTH (type) * TARGET_CHAR_BIT - 1); |
867 | *highp = (*highp - 1) | *highp; | |
868 | return 0; | |
869 | default: | |
870 | return -1; | |
871 | } | |
872 | } | |
873 | ||
dbc98a8b KW |
874 | /* Assuming TYPE is a simple, non-empty array type, compute its upper |
875 | and lower bound. Save the low bound into LOW_BOUND if not NULL. | |
876 | Save the high bound into HIGH_BOUND if not NULL. | |
877 | ||
0963b4bd | 878 | Return 1 if the operation was successful. Return zero otherwise, |
dbc98a8b KW |
879 | in which case the values of LOW_BOUND and HIGH_BOUNDS are unmodified. |
880 | ||
881 | We now simply use get_discrete_bounds call to get the values | |
882 | of the low and high bounds. | |
883 | get_discrete_bounds can return three values: | |
884 | 1, meaning that index is a range, | |
885 | 0, meaning that index is a discrete type, | |
886 | or -1 for failure. */ | |
887 | ||
888 | int | |
889 | get_array_bounds (struct type *type, LONGEST *low_bound, LONGEST *high_bound) | |
890 | { | |
891 | struct type *index = TYPE_INDEX_TYPE (type); | |
892 | LONGEST low = 0; | |
893 | LONGEST high = 0; | |
894 | int res; | |
895 | ||
896 | if (index == NULL) | |
897 | return 0; | |
898 | ||
899 | res = get_discrete_bounds (index, &low, &high); | |
900 | if (res == -1) | |
901 | return 0; | |
902 | ||
903 | /* Check if the array bounds are undefined. */ | |
904 | if (res == 1 | |
905 | && ((low_bound && TYPE_ARRAY_LOWER_BOUND_IS_UNDEFINED (type)) | |
906 | || (high_bound && TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED (type)))) | |
907 | return 0; | |
908 | ||
909 | if (low_bound) | |
910 | *low_bound = low; | |
911 | ||
912 | if (high_bound) | |
913 | *high_bound = high; | |
914 | ||
915 | return 1; | |
916 | } | |
917 | ||
7ba81444 MS |
918 | /* Create an array type using either a blank type supplied in |
919 | RESULT_TYPE, or creating a new type, inheriting the objfile from | |
920 | RANGE_TYPE. | |
c906108c SS |
921 | |
922 | Elements will be of type ELEMENT_TYPE, the indices will be of type | |
923 | RANGE_TYPE. | |
924 | ||
7ba81444 MS |
925 | FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make |
926 | sure it is TYPE_CODE_UNDEF before we bash it into an array | |
927 | type? */ | |
c906108c SS |
928 | |
929 | struct type * | |
7ba81444 MS |
930 | create_array_type (struct type *result_type, |
931 | struct type *element_type, | |
fba45db2 | 932 | struct type *range_type) |
c906108c SS |
933 | { |
934 | LONGEST low_bound, high_bound; | |
935 | ||
936 | if (result_type == NULL) | |
e9bb382b UW |
937 | result_type = alloc_type_copy (range_type); |
938 | ||
c906108c SS |
939 | TYPE_CODE (result_type) = TYPE_CODE_ARRAY; |
940 | TYPE_TARGET_TYPE (result_type) = element_type; | |
941 | if (get_discrete_bounds (range_type, &low_bound, &high_bound) < 0) | |
942 | low_bound = high_bound = 0; | |
943 | CHECK_TYPEDEF (element_type); | |
ab0d6e0d JB |
944 | /* Be careful when setting the array length. Ada arrays can be |
945 | empty arrays with the high_bound being smaller than the low_bound. | |
946 | In such cases, the array length should be zero. */ | |
947 | if (high_bound < low_bound) | |
948 | TYPE_LENGTH (result_type) = 0; | |
949 | else | |
950 | TYPE_LENGTH (result_type) = | |
951 | TYPE_LENGTH (element_type) * (high_bound - low_bound + 1); | |
c906108c SS |
952 | TYPE_NFIELDS (result_type) = 1; |
953 | TYPE_FIELDS (result_type) = | |
1deafd4e | 954 | (struct field *) TYPE_ZALLOC (result_type, sizeof (struct field)); |
262452ec | 955 | TYPE_INDEX_TYPE (result_type) = range_type; |
c906108c SS |
956 | TYPE_VPTR_FIELDNO (result_type) = -1; |
957 | ||
0963b4bd | 958 | /* TYPE_FLAG_TARGET_STUB will take care of zero length arrays. */ |
c906108c | 959 | if (TYPE_LENGTH (result_type) == 0) |
876cecd0 | 960 | TYPE_TARGET_STUB (result_type) = 1; |
c906108c | 961 | |
c16abbde | 962 | return result_type; |
c906108c SS |
963 | } |
964 | ||
e3506a9f UW |
965 | struct type * |
966 | lookup_array_range_type (struct type *element_type, | |
967 | int low_bound, int high_bound) | |
968 | { | |
50810684 | 969 | struct gdbarch *gdbarch = get_type_arch (element_type); |
e3506a9f UW |
970 | struct type *index_type = builtin_type (gdbarch)->builtin_int; |
971 | struct type *range_type | |
972 | = create_range_type (NULL, index_type, low_bound, high_bound); | |
d8734c88 | 973 | |
e3506a9f UW |
974 | return create_array_type (NULL, element_type, range_type); |
975 | } | |
976 | ||
7ba81444 MS |
977 | /* Create a string type using either a blank type supplied in |
978 | RESULT_TYPE, or creating a new type. String types are similar | |
979 | enough to array of char types that we can use create_array_type to | |
980 | build the basic type and then bash it into a string type. | |
c906108c SS |
981 | |
982 | For fixed length strings, the range type contains 0 as the lower | |
983 | bound and the length of the string minus one as the upper bound. | |
984 | ||
7ba81444 MS |
985 | FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make |
986 | sure it is TYPE_CODE_UNDEF before we bash it into a string | |
987 | type? */ | |
c906108c SS |
988 | |
989 | struct type * | |
3b7538c0 UW |
990 | create_string_type (struct type *result_type, |
991 | struct type *string_char_type, | |
7ba81444 | 992 | struct type *range_type) |
c906108c SS |
993 | { |
994 | result_type = create_array_type (result_type, | |
f290d38e | 995 | string_char_type, |
c906108c SS |
996 | range_type); |
997 | TYPE_CODE (result_type) = TYPE_CODE_STRING; | |
c16abbde | 998 | return result_type; |
c906108c SS |
999 | } |
1000 | ||
e3506a9f UW |
1001 | struct type * |
1002 | lookup_string_range_type (struct type *string_char_type, | |
1003 | int low_bound, int high_bound) | |
1004 | { | |
1005 | struct type *result_type; | |
d8734c88 | 1006 | |
e3506a9f UW |
1007 | result_type = lookup_array_range_type (string_char_type, |
1008 | low_bound, high_bound); | |
1009 | TYPE_CODE (result_type) = TYPE_CODE_STRING; | |
1010 | return result_type; | |
1011 | } | |
1012 | ||
c906108c | 1013 | struct type * |
fba45db2 | 1014 | create_set_type (struct type *result_type, struct type *domain_type) |
c906108c | 1015 | { |
c906108c | 1016 | if (result_type == NULL) |
e9bb382b UW |
1017 | result_type = alloc_type_copy (domain_type); |
1018 | ||
c906108c SS |
1019 | TYPE_CODE (result_type) = TYPE_CODE_SET; |
1020 | TYPE_NFIELDS (result_type) = 1; | |
1deafd4e | 1021 | TYPE_FIELDS (result_type) = TYPE_ZALLOC (result_type, sizeof (struct field)); |
c906108c | 1022 | |
74a9bb82 | 1023 | if (!TYPE_STUB (domain_type)) |
c906108c | 1024 | { |
f9780d5b | 1025 | LONGEST low_bound, high_bound, bit_length; |
d8734c88 | 1026 | |
c906108c SS |
1027 | if (get_discrete_bounds (domain_type, &low_bound, &high_bound) < 0) |
1028 | low_bound = high_bound = 0; | |
1029 | bit_length = high_bound - low_bound + 1; | |
1030 | TYPE_LENGTH (result_type) | |
1031 | = (bit_length + TARGET_CHAR_BIT - 1) / TARGET_CHAR_BIT; | |
f9780d5b | 1032 | if (low_bound >= 0) |
876cecd0 | 1033 | TYPE_UNSIGNED (result_type) = 1; |
c906108c SS |
1034 | } |
1035 | TYPE_FIELD_TYPE (result_type, 0) = domain_type; | |
1036 | ||
c16abbde | 1037 | return result_type; |
c906108c SS |
1038 | } |
1039 | ||
ea37ba09 DJ |
1040 | /* Convert ARRAY_TYPE to a vector type. This may modify ARRAY_TYPE |
1041 | and any array types nested inside it. */ | |
1042 | ||
1043 | void | |
1044 | make_vector_type (struct type *array_type) | |
1045 | { | |
1046 | struct type *inner_array, *elt_type; | |
1047 | int flags; | |
1048 | ||
1049 | /* Find the innermost array type, in case the array is | |
1050 | multi-dimensional. */ | |
1051 | inner_array = array_type; | |
1052 | while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array)) == TYPE_CODE_ARRAY) | |
1053 | inner_array = TYPE_TARGET_TYPE (inner_array); | |
1054 | ||
1055 | elt_type = TYPE_TARGET_TYPE (inner_array); | |
1056 | if (TYPE_CODE (elt_type) == TYPE_CODE_INT) | |
1057 | { | |
2844d6b5 | 1058 | flags = TYPE_INSTANCE_FLAGS (elt_type) | TYPE_INSTANCE_FLAG_NOTTEXT; |
ea37ba09 DJ |
1059 | elt_type = make_qualified_type (elt_type, flags, NULL); |
1060 | TYPE_TARGET_TYPE (inner_array) = elt_type; | |
1061 | } | |
1062 | ||
876cecd0 | 1063 | TYPE_VECTOR (array_type) = 1; |
ea37ba09 DJ |
1064 | } |
1065 | ||
794ac428 | 1066 | struct type * |
ac3aafc7 EZ |
1067 | init_vector_type (struct type *elt_type, int n) |
1068 | { | |
1069 | struct type *array_type; | |
d8734c88 | 1070 | |
e3506a9f | 1071 | array_type = lookup_array_range_type (elt_type, 0, n - 1); |
ea37ba09 | 1072 | make_vector_type (array_type); |
ac3aafc7 EZ |
1073 | return array_type; |
1074 | } | |
1075 | ||
0d5de010 DJ |
1076 | /* Smash TYPE to be a type of pointers to members of DOMAIN with type |
1077 | TO_TYPE. A member pointer is a wierd thing -- it amounts to a | |
1078 | typed offset into a struct, e.g. "an int at offset 8". A MEMBER | |
1079 | TYPE doesn't include the offset (that's the value of the MEMBER | |
1080 | itself), but does include the structure type into which it points | |
1081 | (for some reason). | |
c906108c | 1082 | |
7ba81444 MS |
1083 | When "smashing" the type, we preserve the objfile that the old type |
1084 | pointed to, since we aren't changing where the type is actually | |
c906108c SS |
1085 | allocated. */ |
1086 | ||
1087 | void | |
0d5de010 DJ |
1088 | smash_to_memberptr_type (struct type *type, struct type *domain, |
1089 | struct type *to_type) | |
c906108c | 1090 | { |
2fdde8f8 | 1091 | smash_type (type); |
c906108c SS |
1092 | TYPE_TARGET_TYPE (type) = to_type; |
1093 | TYPE_DOMAIN_TYPE (type) = domain; | |
0d5de010 DJ |
1094 | /* Assume that a data member pointer is the same size as a normal |
1095 | pointer. */ | |
50810684 UW |
1096 | TYPE_LENGTH (type) |
1097 | = gdbarch_ptr_bit (get_type_arch (to_type)) / TARGET_CHAR_BIT; | |
0d5de010 | 1098 | TYPE_CODE (type) = TYPE_CODE_MEMBERPTR; |
c906108c SS |
1099 | } |
1100 | ||
0b92b5bb TT |
1101 | /* Smash TYPE to be a type of pointer to methods type TO_TYPE. |
1102 | ||
1103 | When "smashing" the type, we preserve the objfile that the old type | |
1104 | pointed to, since we aren't changing where the type is actually | |
1105 | allocated. */ | |
1106 | ||
1107 | void | |
1108 | smash_to_methodptr_type (struct type *type, struct type *to_type) | |
1109 | { | |
1110 | smash_type (type); | |
1111 | TYPE_TARGET_TYPE (type) = to_type; | |
1112 | TYPE_DOMAIN_TYPE (type) = TYPE_DOMAIN_TYPE (to_type); | |
1113 | TYPE_LENGTH (type) = cplus_method_ptr_size (to_type); | |
1114 | TYPE_CODE (type) = TYPE_CODE_METHODPTR; | |
1115 | } | |
1116 | ||
c906108c SS |
1117 | /* Smash TYPE to be a type of method of DOMAIN with type TO_TYPE. |
1118 | METHOD just means `function that gets an extra "this" argument'. | |
1119 | ||
7ba81444 MS |
1120 | When "smashing" the type, we preserve the objfile that the old type |
1121 | pointed to, since we aren't changing where the type is actually | |
c906108c SS |
1122 | allocated. */ |
1123 | ||
1124 | void | |
fba45db2 | 1125 | smash_to_method_type (struct type *type, struct type *domain, |
ad2f7632 DJ |
1126 | struct type *to_type, struct field *args, |
1127 | int nargs, int varargs) | |
c906108c | 1128 | { |
2fdde8f8 | 1129 | smash_type (type); |
c906108c SS |
1130 | TYPE_TARGET_TYPE (type) = to_type; |
1131 | TYPE_DOMAIN_TYPE (type) = domain; | |
ad2f7632 DJ |
1132 | TYPE_FIELDS (type) = args; |
1133 | TYPE_NFIELDS (type) = nargs; | |
1134 | if (varargs) | |
876cecd0 | 1135 | TYPE_VARARGS (type) = 1; |
c906108c SS |
1136 | TYPE_LENGTH (type) = 1; /* In practice, this is never needed. */ |
1137 | TYPE_CODE (type) = TYPE_CODE_METHOD; | |
1138 | } | |
1139 | ||
1140 | /* Return a typename for a struct/union/enum type without "struct ", | |
1141 | "union ", or "enum ". If the type has a NULL name, return NULL. */ | |
1142 | ||
0d5cff50 | 1143 | const char * |
aa1ee363 | 1144 | type_name_no_tag (const struct type *type) |
c906108c SS |
1145 | { |
1146 | if (TYPE_TAG_NAME (type) != NULL) | |
1147 | return TYPE_TAG_NAME (type); | |
1148 | ||
7ba81444 MS |
1149 | /* Is there code which expects this to return the name if there is |
1150 | no tag name? My guess is that this is mainly used for C++ in | |
1151 | cases where the two will always be the same. */ | |
c906108c SS |
1152 | return TYPE_NAME (type); |
1153 | } | |
1154 | ||
d8228535 JK |
1155 | /* A wrapper of type_name_no_tag which calls error if the type is anonymous. |
1156 | Since GCC PR debug/47510 DWARF provides associated information to detect the | |
1157 | anonymous class linkage name from its typedef. | |
1158 | ||
1159 | Parameter TYPE should not yet have CHECK_TYPEDEF applied, this function will | |
1160 | apply it itself. */ | |
1161 | ||
1162 | const char * | |
1163 | type_name_no_tag_or_error (struct type *type) | |
1164 | { | |
1165 | struct type *saved_type = type; | |
1166 | const char *name; | |
1167 | struct objfile *objfile; | |
1168 | ||
1169 | CHECK_TYPEDEF (type); | |
1170 | ||
1171 | name = type_name_no_tag (type); | |
1172 | if (name != NULL) | |
1173 | return name; | |
1174 | ||
1175 | name = type_name_no_tag (saved_type); | |
1176 | objfile = TYPE_OBJFILE (saved_type); | |
1177 | error (_("Invalid anonymous type %s [in module %s], GCC PR debug/47510 bug?"), | |
1178 | name ? name : "<anonymous>", objfile ? objfile->name : "<arch>"); | |
1179 | } | |
1180 | ||
7ba81444 MS |
1181 | /* Lookup a typedef or primitive type named NAME, visible in lexical |
1182 | block BLOCK. If NOERR is nonzero, return zero if NAME is not | |
1183 | suitably defined. */ | |
c906108c SS |
1184 | |
1185 | struct type * | |
e6c014f2 | 1186 | lookup_typename (const struct language_defn *language, |
ddd49eee | 1187 | struct gdbarch *gdbarch, const char *name, |
34eaf542 | 1188 | const struct block *block, int noerr) |
c906108c | 1189 | { |
52f0bd74 | 1190 | struct symbol *sym; |
659c9f3a | 1191 | struct type *type; |
c906108c | 1192 | |
774b6a14 | 1193 | sym = lookup_symbol (name, block, VAR_DOMAIN, 0); |
c51fe631 DE |
1194 | if (sym != NULL && SYMBOL_CLASS (sym) == LOC_TYPEDEF) |
1195 | return SYMBOL_TYPE (sym); | |
1196 | ||
659c9f3a DE |
1197 | type = language_lookup_primitive_type_by_name (language, gdbarch, name); |
1198 | if (type) | |
1199 | return type; | |
c51fe631 DE |
1200 | |
1201 | if (noerr) | |
1202 | return NULL; | |
1203 | error (_("No type named %s."), name); | |
c906108c SS |
1204 | } |
1205 | ||
1206 | struct type * | |
e6c014f2 | 1207 | lookup_unsigned_typename (const struct language_defn *language, |
0d5cff50 | 1208 | struct gdbarch *gdbarch, const char *name) |
c906108c SS |
1209 | { |
1210 | char *uns = alloca (strlen (name) + 10); | |
1211 | ||
1212 | strcpy (uns, "unsigned "); | |
1213 | strcpy (uns + 9, name); | |
e6c014f2 | 1214 | return lookup_typename (language, gdbarch, uns, (struct block *) NULL, 0); |
c906108c SS |
1215 | } |
1216 | ||
1217 | struct type * | |
e6c014f2 | 1218 | lookup_signed_typename (const struct language_defn *language, |
0d5cff50 | 1219 | struct gdbarch *gdbarch, const char *name) |
c906108c SS |
1220 | { |
1221 | struct type *t; | |
1222 | char *uns = alloca (strlen (name) + 8); | |
1223 | ||
1224 | strcpy (uns, "signed "); | |
1225 | strcpy (uns + 7, name); | |
e6c014f2 | 1226 | t = lookup_typename (language, gdbarch, uns, (struct block *) NULL, 1); |
7ba81444 | 1227 | /* If we don't find "signed FOO" just try again with plain "FOO". */ |
c906108c SS |
1228 | if (t != NULL) |
1229 | return t; | |
e6c014f2 | 1230 | return lookup_typename (language, gdbarch, name, (struct block *) NULL, 0); |
c906108c SS |
1231 | } |
1232 | ||
1233 | /* Lookup a structure type named "struct NAME", | |
1234 | visible in lexical block BLOCK. */ | |
1235 | ||
1236 | struct type * | |
ddd49eee | 1237 | lookup_struct (const char *name, struct block *block) |
c906108c | 1238 | { |
52f0bd74 | 1239 | struct symbol *sym; |
c906108c | 1240 | |
2570f2b7 | 1241 | sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0); |
c906108c SS |
1242 | |
1243 | if (sym == NULL) | |
1244 | { | |
8a3fe4f8 | 1245 | error (_("No struct type named %s."), name); |
c906108c SS |
1246 | } |
1247 | if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_STRUCT) | |
1248 | { | |
7ba81444 MS |
1249 | error (_("This context has class, union or enum %s, not a struct."), |
1250 | name); | |
c906108c SS |
1251 | } |
1252 | return (SYMBOL_TYPE (sym)); | |
1253 | } | |
1254 | ||
1255 | /* Lookup a union type named "union NAME", | |
1256 | visible in lexical block BLOCK. */ | |
1257 | ||
1258 | struct type * | |
ddd49eee | 1259 | lookup_union (const char *name, struct block *block) |
c906108c | 1260 | { |
52f0bd74 | 1261 | struct symbol *sym; |
c5aa993b | 1262 | struct type *t; |
c906108c | 1263 | |
2570f2b7 | 1264 | sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0); |
c906108c SS |
1265 | |
1266 | if (sym == NULL) | |
8a3fe4f8 | 1267 | error (_("No union type named %s."), name); |
c906108c | 1268 | |
c5aa993b | 1269 | t = SYMBOL_TYPE (sym); |
c906108c SS |
1270 | |
1271 | if (TYPE_CODE (t) == TYPE_CODE_UNION) | |
c16abbde | 1272 | return t; |
c906108c | 1273 | |
7ba81444 MS |
1274 | /* If we get here, it's not a union. */ |
1275 | error (_("This context has class, struct or enum %s, not a union."), | |
1276 | name); | |
c906108c SS |
1277 | } |
1278 | ||
c906108c SS |
1279 | /* Lookup an enum type named "enum NAME", |
1280 | visible in lexical block BLOCK. */ | |
1281 | ||
1282 | struct type * | |
ddd49eee | 1283 | lookup_enum (const char *name, struct block *block) |
c906108c | 1284 | { |
52f0bd74 | 1285 | struct symbol *sym; |
c906108c | 1286 | |
2570f2b7 | 1287 | sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0); |
c906108c SS |
1288 | if (sym == NULL) |
1289 | { | |
8a3fe4f8 | 1290 | error (_("No enum type named %s."), name); |
c906108c SS |
1291 | } |
1292 | if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_ENUM) | |
1293 | { | |
7ba81444 MS |
1294 | error (_("This context has class, struct or union %s, not an enum."), |
1295 | name); | |
c906108c SS |
1296 | } |
1297 | return (SYMBOL_TYPE (sym)); | |
1298 | } | |
1299 | ||
1300 | /* Lookup a template type named "template NAME<TYPE>", | |
1301 | visible in lexical block BLOCK. */ | |
1302 | ||
1303 | struct type * | |
7ba81444 MS |
1304 | lookup_template_type (char *name, struct type *type, |
1305 | struct block *block) | |
c906108c SS |
1306 | { |
1307 | struct symbol *sym; | |
7ba81444 MS |
1308 | char *nam = (char *) |
1309 | alloca (strlen (name) + strlen (TYPE_NAME (type)) + 4); | |
d8734c88 | 1310 | |
c906108c SS |
1311 | strcpy (nam, name); |
1312 | strcat (nam, "<"); | |
0004e5a2 | 1313 | strcat (nam, TYPE_NAME (type)); |
0963b4bd | 1314 | strcat (nam, " >"); /* FIXME, extra space still introduced in gcc? */ |
c906108c | 1315 | |
2570f2b7 | 1316 | sym = lookup_symbol (nam, block, VAR_DOMAIN, 0); |
c906108c SS |
1317 | |
1318 | if (sym == NULL) | |
1319 | { | |
8a3fe4f8 | 1320 | error (_("No template type named %s."), name); |
c906108c SS |
1321 | } |
1322 | if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_STRUCT) | |
1323 | { | |
7ba81444 MS |
1324 | error (_("This context has class, union or enum %s, not a struct."), |
1325 | name); | |
c906108c SS |
1326 | } |
1327 | return (SYMBOL_TYPE (sym)); | |
1328 | } | |
1329 | ||
7ba81444 MS |
1330 | /* Given a type TYPE, lookup the type of the component of type named |
1331 | NAME. | |
c906108c | 1332 | |
7ba81444 MS |
1333 | TYPE can be either a struct or union, or a pointer or reference to |
1334 | a struct or union. If it is a pointer or reference, its target | |
1335 | type is automatically used. Thus '.' and '->' are interchangable, | |
1336 | as specified for the definitions of the expression element types | |
1337 | STRUCTOP_STRUCT and STRUCTOP_PTR. | |
c906108c SS |
1338 | |
1339 | If NOERR is nonzero, return zero if NAME is not suitably defined. | |
1340 | If NAME is the name of a baseclass type, return that type. */ | |
1341 | ||
1342 | struct type * | |
fba45db2 | 1343 | lookup_struct_elt_type (struct type *type, char *name, int noerr) |
c906108c SS |
1344 | { |
1345 | int i; | |
c92817ce | 1346 | char *typename; |
c906108c SS |
1347 | |
1348 | for (;;) | |
1349 | { | |
1350 | CHECK_TYPEDEF (type); | |
1351 | if (TYPE_CODE (type) != TYPE_CODE_PTR | |
1352 | && TYPE_CODE (type) != TYPE_CODE_REF) | |
1353 | break; | |
1354 | type = TYPE_TARGET_TYPE (type); | |
1355 | } | |
1356 | ||
687d6395 MS |
1357 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT |
1358 | && TYPE_CODE (type) != TYPE_CODE_UNION) | |
c906108c | 1359 | { |
c92817ce TT |
1360 | typename = type_to_string (type); |
1361 | make_cleanup (xfree, typename); | |
1362 | error (_("Type %s is not a structure or union type."), typename); | |
c906108c SS |
1363 | } |
1364 | ||
1365 | #if 0 | |
7ba81444 MS |
1366 | /* FIXME: This change put in by Michael seems incorrect for the case |
1367 | where the structure tag name is the same as the member name. | |
0963b4bd | 1368 | I.e. when doing "ptype bell->bar" for "struct foo { int bar; int |
7ba81444 | 1369 | foo; } bell;" Disabled by fnf. */ |
c906108c SS |
1370 | { |
1371 | char *typename; | |
1372 | ||
1373 | typename = type_name_no_tag (type); | |
762f08a3 | 1374 | if (typename != NULL && strcmp (typename, name) == 0) |
c906108c SS |
1375 | return type; |
1376 | } | |
1377 | #endif | |
1378 | ||
1379 | for (i = TYPE_NFIELDS (type) - 1; i >= TYPE_N_BASECLASSES (type); i--) | |
1380 | { | |
0d5cff50 | 1381 | const char *t_field_name = TYPE_FIELD_NAME (type, i); |
c906108c | 1382 | |
db577aea | 1383 | if (t_field_name && (strcmp_iw (t_field_name, name) == 0)) |
c906108c SS |
1384 | { |
1385 | return TYPE_FIELD_TYPE (type, i); | |
1386 | } | |
f5a010c0 PM |
1387 | else if (!t_field_name || *t_field_name == '\0') |
1388 | { | |
d8734c88 MS |
1389 | struct type *subtype |
1390 | = lookup_struct_elt_type (TYPE_FIELD_TYPE (type, i), name, 1); | |
1391 | ||
f5a010c0 PM |
1392 | if (subtype != NULL) |
1393 | return subtype; | |
1394 | } | |
c906108c SS |
1395 | } |
1396 | ||
1397 | /* OK, it's not in this class. Recursively check the baseclasses. */ | |
1398 | for (i = TYPE_N_BASECLASSES (type) - 1; i >= 0; i--) | |
1399 | { | |
1400 | struct type *t; | |
1401 | ||
9733fc94 | 1402 | t = lookup_struct_elt_type (TYPE_BASECLASS (type, i), name, 1); |
c906108c SS |
1403 | if (t != NULL) |
1404 | { | |
1405 | return t; | |
1406 | } | |
1407 | } | |
1408 | ||
1409 | if (noerr) | |
1410 | { | |
1411 | return NULL; | |
1412 | } | |
c5aa993b | 1413 | |
c92817ce TT |
1414 | typename = type_to_string (type); |
1415 | make_cleanup (xfree, typename); | |
1416 | error (_("Type %s has no component named %s."), typename, name); | |
c906108c SS |
1417 | } |
1418 | ||
81fe8080 DE |
1419 | /* Lookup the vptr basetype/fieldno values for TYPE. |
1420 | If found store vptr_basetype in *BASETYPEP if non-NULL, and return | |
1421 | vptr_fieldno. Also, if found and basetype is from the same objfile, | |
1422 | cache the results. | |
1423 | If not found, return -1 and ignore BASETYPEP. | |
1424 | Callers should be aware that in some cases (for example, | |
c906108c | 1425 | the type or one of its baseclasses is a stub type and we are |
d48cc9dd DJ |
1426 | debugging a .o file, or the compiler uses DWARF-2 and is not GCC), |
1427 | this function will not be able to find the | |
7ba81444 | 1428 | virtual function table pointer, and vptr_fieldno will remain -1 and |
81fe8080 | 1429 | vptr_basetype will remain NULL or incomplete. */ |
c906108c | 1430 | |
81fe8080 DE |
1431 | int |
1432 | get_vptr_fieldno (struct type *type, struct type **basetypep) | |
c906108c SS |
1433 | { |
1434 | CHECK_TYPEDEF (type); | |
1435 | ||
1436 | if (TYPE_VPTR_FIELDNO (type) < 0) | |
1437 | { | |
1438 | int i; | |
1439 | ||
7ba81444 MS |
1440 | /* We must start at zero in case the first (and only) baseclass |
1441 | is virtual (and hence we cannot share the table pointer). */ | |
c906108c SS |
1442 | for (i = 0; i < TYPE_N_BASECLASSES (type); i++) |
1443 | { | |
81fe8080 DE |
1444 | struct type *baseclass = check_typedef (TYPE_BASECLASS (type, i)); |
1445 | int fieldno; | |
1446 | struct type *basetype; | |
1447 | ||
1448 | fieldno = get_vptr_fieldno (baseclass, &basetype); | |
1449 | if (fieldno >= 0) | |
c906108c | 1450 | { |
81fe8080 | 1451 | /* If the type comes from a different objfile we can't cache |
0963b4bd | 1452 | it, it may have a different lifetime. PR 2384 */ |
5ef73790 | 1453 | if (TYPE_OBJFILE (type) == TYPE_OBJFILE (basetype)) |
81fe8080 DE |
1454 | { |
1455 | TYPE_VPTR_FIELDNO (type) = fieldno; | |
1456 | TYPE_VPTR_BASETYPE (type) = basetype; | |
1457 | } | |
1458 | if (basetypep) | |
1459 | *basetypep = basetype; | |
1460 | return fieldno; | |
c906108c SS |
1461 | } |
1462 | } | |
81fe8080 DE |
1463 | |
1464 | /* Not found. */ | |
1465 | return -1; | |
1466 | } | |
1467 | else | |
1468 | { | |
1469 | if (basetypep) | |
1470 | *basetypep = TYPE_VPTR_BASETYPE (type); | |
1471 | return TYPE_VPTR_FIELDNO (type); | |
c906108c SS |
1472 | } |
1473 | } | |
1474 | ||
44e1a9eb DJ |
1475 | static void |
1476 | stub_noname_complaint (void) | |
1477 | { | |
e2e0b3e5 | 1478 | complaint (&symfile_complaints, _("stub type has NULL name")); |
44e1a9eb DJ |
1479 | } |
1480 | ||
92163a10 JK |
1481 | /* Find the real type of TYPE. This function returns the real type, |
1482 | after removing all layers of typedefs, and completing opaque or stub | |
1483 | types. Completion changes the TYPE argument, but stripping of | |
1484 | typedefs does not. | |
1485 | ||
1486 | Instance flags (e.g. const/volatile) are preserved as typedefs are | |
1487 | stripped. If necessary a new qualified form of the underlying type | |
1488 | is created. | |
1489 | ||
1490 | NOTE: This will return a typedef if TYPE_TARGET_TYPE for the typedef has | |
1491 | not been computed and we're either in the middle of reading symbols, or | |
1492 | there was no name for the typedef in the debug info. | |
1493 | ||
9bc118a5 DE |
1494 | NOTE: Lookup of opaque types can throw errors for invalid symbol files. |
1495 | QUITs in the symbol reading code can also throw. | |
1496 | Thus this function can throw an exception. | |
1497 | ||
92163a10 JK |
1498 | If TYPE is a TYPE_CODE_TYPEDEF, its length is updated to the length of |
1499 | the target type. | |
c906108c SS |
1500 | |
1501 | If this is a stubbed struct (i.e. declared as struct foo *), see if | |
0963b4bd | 1502 | we can find a full definition in some other file. If so, copy this |
7ba81444 MS |
1503 | definition, so we can use it in future. There used to be a comment |
1504 | (but not any code) that if we don't find a full definition, we'd | |
1505 | set a flag so we don't spend time in the future checking the same | |
1506 | type. That would be a mistake, though--we might load in more | |
92163a10 | 1507 | symbols which contain a full definition for the type. */ |
c906108c SS |
1508 | |
1509 | struct type * | |
a02fd225 | 1510 | check_typedef (struct type *type) |
c906108c SS |
1511 | { |
1512 | struct type *orig_type = type; | |
92163a10 JK |
1513 | /* While we're removing typedefs, we don't want to lose qualifiers. |
1514 | E.g., const/volatile. */ | |
1515 | int instance_flags = TYPE_INSTANCE_FLAGS (type); | |
a02fd225 | 1516 | |
423c0af8 MS |
1517 | gdb_assert (type); |
1518 | ||
c906108c SS |
1519 | while (TYPE_CODE (type) == TYPE_CODE_TYPEDEF) |
1520 | { | |
1521 | if (!TYPE_TARGET_TYPE (type)) | |
1522 | { | |
0d5cff50 | 1523 | const char *name; |
c906108c SS |
1524 | struct symbol *sym; |
1525 | ||
1526 | /* It is dangerous to call lookup_symbol if we are currently | |
7ba81444 | 1527 | reading a symtab. Infinite recursion is one danger. */ |
c906108c | 1528 | if (currently_reading_symtab) |
92163a10 | 1529 | return make_qualified_type (type, instance_flags, NULL); |
c906108c SS |
1530 | |
1531 | name = type_name_no_tag (type); | |
7ba81444 MS |
1532 | /* FIXME: shouldn't we separately check the TYPE_NAME and |
1533 | the TYPE_TAG_NAME, and look in STRUCT_DOMAIN and/or | |
1534 | VAR_DOMAIN as appropriate? (this code was written before | |
1535 | TYPE_NAME and TYPE_TAG_NAME were separate). */ | |
c906108c SS |
1536 | if (name == NULL) |
1537 | { | |
23136709 | 1538 | stub_noname_complaint (); |
92163a10 | 1539 | return make_qualified_type (type, instance_flags, NULL); |
c906108c | 1540 | } |
2570f2b7 | 1541 | sym = lookup_symbol (name, 0, STRUCT_DOMAIN, 0); |
c906108c SS |
1542 | if (sym) |
1543 | TYPE_TARGET_TYPE (type) = SYMBOL_TYPE (sym); | |
7ba81444 | 1544 | else /* TYPE_CODE_UNDEF */ |
e9bb382b | 1545 | TYPE_TARGET_TYPE (type) = alloc_type_arch (get_type_arch (type)); |
c906108c SS |
1546 | } |
1547 | type = TYPE_TARGET_TYPE (type); | |
c906108c | 1548 | |
92163a10 JK |
1549 | /* Preserve the instance flags as we traverse down the typedef chain. |
1550 | ||
1551 | Handling address spaces/classes is nasty, what do we do if there's a | |
1552 | conflict? | |
1553 | E.g., what if an outer typedef marks the type as class_1 and an inner | |
1554 | typedef marks the type as class_2? | |
1555 | This is the wrong place to do such error checking. We leave it to | |
1556 | the code that created the typedef in the first place to flag the | |
1557 | error. We just pick the outer address space (akin to letting the | |
1558 | outer cast in a chain of casting win), instead of assuming | |
1559 | "it can't happen". */ | |
1560 | { | |
1561 | const int ALL_SPACES = (TYPE_INSTANCE_FLAG_CODE_SPACE | |
1562 | | TYPE_INSTANCE_FLAG_DATA_SPACE); | |
1563 | const int ALL_CLASSES = TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL; | |
1564 | int new_instance_flags = TYPE_INSTANCE_FLAGS (type); | |
1565 | ||
1566 | /* Treat code vs data spaces and address classes separately. */ | |
1567 | if ((instance_flags & ALL_SPACES) != 0) | |
1568 | new_instance_flags &= ~ALL_SPACES; | |
1569 | if ((instance_flags & ALL_CLASSES) != 0) | |
1570 | new_instance_flags &= ~ALL_CLASSES; | |
1571 | ||
1572 | instance_flags |= new_instance_flags; | |
1573 | } | |
1574 | } | |
a02fd225 | 1575 | |
7ba81444 MS |
1576 | /* If this is a struct/class/union with no fields, then check |
1577 | whether a full definition exists somewhere else. This is for | |
1578 | systems where a type definition with no fields is issued for such | |
1579 | types, instead of identifying them as stub types in the first | |
1580 | place. */ | |
c5aa993b | 1581 | |
7ba81444 MS |
1582 | if (TYPE_IS_OPAQUE (type) |
1583 | && opaque_type_resolution | |
1584 | && !currently_reading_symtab) | |
c906108c | 1585 | { |
0d5cff50 | 1586 | const char *name = type_name_no_tag (type); |
c5aa993b | 1587 | struct type *newtype; |
d8734c88 | 1588 | |
c906108c SS |
1589 | if (name == NULL) |
1590 | { | |
23136709 | 1591 | stub_noname_complaint (); |
92163a10 | 1592 | return make_qualified_type (type, instance_flags, NULL); |
c906108c SS |
1593 | } |
1594 | newtype = lookup_transparent_type (name); | |
ad766c0a | 1595 | |
c906108c | 1596 | if (newtype) |
ad766c0a | 1597 | { |
7ba81444 MS |
1598 | /* If the resolved type and the stub are in the same |
1599 | objfile, then replace the stub type with the real deal. | |
1600 | But if they're in separate objfiles, leave the stub | |
1601 | alone; we'll just look up the transparent type every time | |
1602 | we call check_typedef. We can't create pointers between | |
1603 | types allocated to different objfiles, since they may | |
1604 | have different lifetimes. Trying to copy NEWTYPE over to | |
1605 | TYPE's objfile is pointless, too, since you'll have to | |
1606 | move over any other types NEWTYPE refers to, which could | |
1607 | be an unbounded amount of stuff. */ | |
ad766c0a | 1608 | if (TYPE_OBJFILE (newtype) == TYPE_OBJFILE (type)) |
92163a10 JK |
1609 | type = make_qualified_type (newtype, |
1610 | TYPE_INSTANCE_FLAGS (type), | |
1611 | type); | |
ad766c0a JB |
1612 | else |
1613 | type = newtype; | |
1614 | } | |
c906108c | 1615 | } |
7ba81444 MS |
1616 | /* Otherwise, rely on the stub flag being set for opaque/stubbed |
1617 | types. */ | |
74a9bb82 | 1618 | else if (TYPE_STUB (type) && !currently_reading_symtab) |
c906108c | 1619 | { |
0d5cff50 | 1620 | const char *name = type_name_no_tag (type); |
c906108c | 1621 | /* FIXME: shouldn't we separately check the TYPE_NAME and the |
176620f1 | 1622 | TYPE_TAG_NAME, and look in STRUCT_DOMAIN and/or VAR_DOMAIN |
7b83ea04 AC |
1623 | as appropriate? (this code was written before TYPE_NAME and |
1624 | TYPE_TAG_NAME were separate). */ | |
c906108c | 1625 | struct symbol *sym; |
d8734c88 | 1626 | |
c906108c SS |
1627 | if (name == NULL) |
1628 | { | |
23136709 | 1629 | stub_noname_complaint (); |
92163a10 | 1630 | return make_qualified_type (type, instance_flags, NULL); |
c906108c | 1631 | } |
2570f2b7 | 1632 | sym = lookup_symbol (name, 0, STRUCT_DOMAIN, 0); |
c906108c | 1633 | if (sym) |
c26f2453 JB |
1634 | { |
1635 | /* Same as above for opaque types, we can replace the stub | |
92163a10 | 1636 | with the complete type only if they are in the same |
c26f2453 JB |
1637 | objfile. */ |
1638 | if (TYPE_OBJFILE (SYMBOL_TYPE(sym)) == TYPE_OBJFILE (type)) | |
92163a10 JK |
1639 | type = make_qualified_type (SYMBOL_TYPE (sym), |
1640 | TYPE_INSTANCE_FLAGS (type), | |
1641 | type); | |
c26f2453 JB |
1642 | else |
1643 | type = SYMBOL_TYPE (sym); | |
1644 | } | |
c906108c SS |
1645 | } |
1646 | ||
74a9bb82 | 1647 | if (TYPE_TARGET_STUB (type)) |
c906108c SS |
1648 | { |
1649 | struct type *range_type; | |
1650 | struct type *target_type = check_typedef (TYPE_TARGET_TYPE (type)); | |
1651 | ||
74a9bb82 | 1652 | if (TYPE_STUB (target_type) || TYPE_TARGET_STUB (target_type)) |
c5aa993b | 1653 | { |
73e2eb35 | 1654 | /* Nothing we can do. */ |
c5aa993b | 1655 | } |
c906108c SS |
1656 | else if (TYPE_CODE (type) == TYPE_CODE_ARRAY |
1657 | && TYPE_NFIELDS (type) == 1 | |
262452ec | 1658 | && (TYPE_CODE (range_type = TYPE_INDEX_TYPE (type)) |
c906108c SS |
1659 | == TYPE_CODE_RANGE)) |
1660 | { | |
1661 | /* Now recompute the length of the array type, based on its | |
ab0d6e0d JB |
1662 | number of elements and the target type's length. |
1663 | Watch out for Ada null Ada arrays where the high bound | |
0963b4bd | 1664 | is smaller than the low bound. */ |
43bbcdc2 PH |
1665 | const LONGEST low_bound = TYPE_LOW_BOUND (range_type); |
1666 | const LONGEST high_bound = TYPE_HIGH_BOUND (range_type); | |
1667 | ULONGEST len; | |
1668 | ||
ab0d6e0d | 1669 | if (high_bound < low_bound) |
43bbcdc2 | 1670 | len = 0; |
d8734c88 MS |
1671 | else |
1672 | { | |
1673 | /* For now, we conservatively take the array length to be 0 | |
1674 | if its length exceeds UINT_MAX. The code below assumes | |
1675 | that for x < 0, (ULONGEST) x == -x + ULONGEST_MAX + 1, | |
1676 | which is technically not guaranteed by C, but is usually true | |
1677 | (because it would be true if x were unsigned with its | |
0963b4bd | 1678 | high-order bit on). It uses the fact that |
d8734c88 MS |
1679 | high_bound-low_bound is always representable in |
1680 | ULONGEST and that if high_bound-low_bound+1 overflows, | |
1681 | it overflows to 0. We must change these tests if we | |
1682 | decide to increase the representation of TYPE_LENGTH | |
0963b4bd | 1683 | from unsigned int to ULONGEST. */ |
d8734c88 MS |
1684 | ULONGEST ulow = low_bound, uhigh = high_bound; |
1685 | ULONGEST tlen = TYPE_LENGTH (target_type); | |
1686 | ||
1687 | len = tlen * (uhigh - ulow + 1); | |
1688 | if (tlen == 0 || (len / tlen - 1 + ulow) != uhigh | |
1689 | || len > UINT_MAX) | |
1690 | len = 0; | |
1691 | } | |
43bbcdc2 | 1692 | TYPE_LENGTH (type) = len; |
876cecd0 | 1693 | TYPE_TARGET_STUB (type) = 0; |
c906108c SS |
1694 | } |
1695 | else if (TYPE_CODE (type) == TYPE_CODE_RANGE) | |
1696 | { | |
1697 | TYPE_LENGTH (type) = TYPE_LENGTH (target_type); | |
876cecd0 | 1698 | TYPE_TARGET_STUB (type) = 0; |
c906108c SS |
1699 | } |
1700 | } | |
92163a10 JK |
1701 | |
1702 | type = make_qualified_type (type, instance_flags, NULL); | |
1703 | ||
7ba81444 | 1704 | /* Cache TYPE_LENGTH for future use. */ |
c906108c | 1705 | TYPE_LENGTH (orig_type) = TYPE_LENGTH (type); |
92163a10 | 1706 | |
c906108c SS |
1707 | return type; |
1708 | } | |
1709 | ||
7ba81444 | 1710 | /* Parse a type expression in the string [P..P+LENGTH). If an error |
48319d1f | 1711 | occurs, silently return a void type. */ |
c91ecb25 | 1712 | |
b9362cc7 | 1713 | static struct type * |
48319d1f | 1714 | safe_parse_type (struct gdbarch *gdbarch, char *p, int length) |
c91ecb25 ND |
1715 | { |
1716 | struct ui_file *saved_gdb_stderr; | |
34365054 | 1717 | struct type *type = NULL; /* Initialize to keep gcc happy. */ |
8e7b59a5 | 1718 | volatile struct gdb_exception except; |
c91ecb25 | 1719 | |
7ba81444 | 1720 | /* Suppress error messages. */ |
c91ecb25 ND |
1721 | saved_gdb_stderr = gdb_stderr; |
1722 | gdb_stderr = ui_file_new (); | |
1723 | ||
7ba81444 | 1724 | /* Call parse_and_eval_type() without fear of longjmp()s. */ |
8e7b59a5 KS |
1725 | TRY_CATCH (except, RETURN_MASK_ERROR) |
1726 | { | |
1727 | type = parse_and_eval_type (p, length); | |
1728 | } | |
1729 | ||
1730 | if (except.reason < 0) | |
48319d1f | 1731 | type = builtin_type (gdbarch)->builtin_void; |
c91ecb25 | 1732 | |
7ba81444 | 1733 | /* Stop suppressing error messages. */ |
c91ecb25 ND |
1734 | ui_file_delete (gdb_stderr); |
1735 | gdb_stderr = saved_gdb_stderr; | |
1736 | ||
1737 | return type; | |
1738 | } | |
1739 | ||
c906108c SS |
1740 | /* Ugly hack to convert method stubs into method types. |
1741 | ||
7ba81444 MS |
1742 | He ain't kiddin'. This demangles the name of the method into a |
1743 | string including argument types, parses out each argument type, | |
1744 | generates a string casting a zero to that type, evaluates the | |
1745 | string, and stuffs the resulting type into an argtype vector!!! | |
1746 | Then it knows the type of the whole function (including argument | |
1747 | types for overloading), which info used to be in the stab's but was | |
1748 | removed to hack back the space required for them. */ | |
c906108c | 1749 | |
de17c821 | 1750 | static void |
fba45db2 | 1751 | check_stub_method (struct type *type, int method_id, int signature_id) |
c906108c | 1752 | { |
50810684 | 1753 | struct gdbarch *gdbarch = get_type_arch (type); |
c906108c SS |
1754 | struct fn_field *f; |
1755 | char *mangled_name = gdb_mangle_name (type, method_id, signature_id); | |
1756 | char *demangled_name = cplus_demangle (mangled_name, | |
1757 | DMGL_PARAMS | DMGL_ANSI); | |
1758 | char *argtypetext, *p; | |
1759 | int depth = 0, argcount = 1; | |
ad2f7632 | 1760 | struct field *argtypes; |
c906108c SS |
1761 | struct type *mtype; |
1762 | ||
1763 | /* Make sure we got back a function string that we can use. */ | |
1764 | if (demangled_name) | |
1765 | p = strchr (demangled_name, '('); | |
502dcf4e AC |
1766 | else |
1767 | p = NULL; | |
c906108c SS |
1768 | |
1769 | if (demangled_name == NULL || p == NULL) | |
7ba81444 MS |
1770 | error (_("Internal: Cannot demangle mangled name `%s'."), |
1771 | mangled_name); | |
c906108c SS |
1772 | |
1773 | /* Now, read in the parameters that define this type. */ | |
1774 | p += 1; | |
1775 | argtypetext = p; | |
1776 | while (*p) | |
1777 | { | |
070ad9f0 | 1778 | if (*p == '(' || *p == '<') |
c906108c SS |
1779 | { |
1780 | depth += 1; | |
1781 | } | |
070ad9f0 | 1782 | else if (*p == ')' || *p == '>') |
c906108c SS |
1783 | { |
1784 | depth -= 1; | |
1785 | } | |
1786 | else if (*p == ',' && depth == 0) | |
1787 | { | |
1788 | argcount += 1; | |
1789 | } | |
1790 | ||
1791 | p += 1; | |
1792 | } | |
1793 | ||
ad2f7632 DJ |
1794 | /* If we read one argument and it was ``void'', don't count it. */ |
1795 | if (strncmp (argtypetext, "(void)", 6) == 0) | |
1796 | argcount -= 1; | |
c906108c | 1797 | |
ad2f7632 DJ |
1798 | /* We need one extra slot, for the THIS pointer. */ |
1799 | ||
1800 | argtypes = (struct field *) | |
1801 | TYPE_ALLOC (type, (argcount + 1) * sizeof (struct field)); | |
c906108c | 1802 | p = argtypetext; |
4a1970e4 DJ |
1803 | |
1804 | /* Add THIS pointer for non-static methods. */ | |
1805 | f = TYPE_FN_FIELDLIST1 (type, method_id); | |
1806 | if (TYPE_FN_FIELD_STATIC_P (f, signature_id)) | |
1807 | argcount = 0; | |
1808 | else | |
1809 | { | |
ad2f7632 | 1810 | argtypes[0].type = lookup_pointer_type (type); |
4a1970e4 DJ |
1811 | argcount = 1; |
1812 | } | |
c906108c | 1813 | |
0963b4bd | 1814 | if (*p != ')') /* () means no args, skip while. */ |
c906108c SS |
1815 | { |
1816 | depth = 0; | |
1817 | while (*p) | |
1818 | { | |
1819 | if (depth <= 0 && (*p == ',' || *p == ')')) | |
1820 | { | |
ad2f7632 DJ |
1821 | /* Avoid parsing of ellipsis, they will be handled below. |
1822 | Also avoid ``void'' as above. */ | |
1823 | if (strncmp (argtypetext, "...", p - argtypetext) != 0 | |
1824 | && strncmp (argtypetext, "void", p - argtypetext) != 0) | |
c906108c | 1825 | { |
ad2f7632 | 1826 | argtypes[argcount].type = |
48319d1f | 1827 | safe_parse_type (gdbarch, argtypetext, p - argtypetext); |
c906108c SS |
1828 | argcount += 1; |
1829 | } | |
1830 | argtypetext = p + 1; | |
1831 | } | |
1832 | ||
070ad9f0 | 1833 | if (*p == '(' || *p == '<') |
c906108c SS |
1834 | { |
1835 | depth += 1; | |
1836 | } | |
070ad9f0 | 1837 | else if (*p == ')' || *p == '>') |
c906108c SS |
1838 | { |
1839 | depth -= 1; | |
1840 | } | |
1841 | ||
1842 | p += 1; | |
1843 | } | |
1844 | } | |
1845 | ||
c906108c SS |
1846 | TYPE_FN_FIELD_PHYSNAME (f, signature_id) = mangled_name; |
1847 | ||
1848 | /* Now update the old "stub" type into a real type. */ | |
1849 | mtype = TYPE_FN_FIELD_TYPE (f, signature_id); | |
1850 | TYPE_DOMAIN_TYPE (mtype) = type; | |
ad2f7632 DJ |
1851 | TYPE_FIELDS (mtype) = argtypes; |
1852 | TYPE_NFIELDS (mtype) = argcount; | |
876cecd0 | 1853 | TYPE_STUB (mtype) = 0; |
c906108c | 1854 | TYPE_FN_FIELD_STUB (f, signature_id) = 0; |
ad2f7632 | 1855 | if (p[-2] == '.') |
876cecd0 | 1856 | TYPE_VARARGS (mtype) = 1; |
ad2f7632 DJ |
1857 | |
1858 | xfree (demangled_name); | |
c906108c SS |
1859 | } |
1860 | ||
7ba81444 MS |
1861 | /* This is the external interface to check_stub_method, above. This |
1862 | function unstubs all of the signatures for TYPE's METHOD_ID method | |
1863 | name. After calling this function TYPE_FN_FIELD_STUB will be | |
1864 | cleared for each signature and TYPE_FN_FIELDLIST_NAME will be | |
1865 | correct. | |
de17c821 DJ |
1866 | |
1867 | This function unfortunately can not die until stabs do. */ | |
1868 | ||
1869 | void | |
1870 | check_stub_method_group (struct type *type, int method_id) | |
1871 | { | |
1872 | int len = TYPE_FN_FIELDLIST_LENGTH (type, method_id); | |
1873 | struct fn_field *f = TYPE_FN_FIELDLIST1 (type, method_id); | |
f710f4fc | 1874 | int j, found_stub = 0; |
de17c821 DJ |
1875 | |
1876 | for (j = 0; j < len; j++) | |
1877 | if (TYPE_FN_FIELD_STUB (f, j)) | |
1878 | { | |
1879 | found_stub = 1; | |
1880 | check_stub_method (type, method_id, j); | |
1881 | } | |
1882 | ||
7ba81444 MS |
1883 | /* GNU v3 methods with incorrect names were corrected when we read |
1884 | in type information, because it was cheaper to do it then. The | |
1885 | only GNU v2 methods with incorrect method names are operators and | |
1886 | destructors; destructors were also corrected when we read in type | |
1887 | information. | |
de17c821 DJ |
1888 | |
1889 | Therefore the only thing we need to handle here are v2 operator | |
1890 | names. */ | |
1891 | if (found_stub && strncmp (TYPE_FN_FIELD_PHYSNAME (f, 0), "_Z", 2) != 0) | |
1892 | { | |
1893 | int ret; | |
1894 | char dem_opname[256]; | |
1895 | ||
7ba81444 MS |
1896 | ret = cplus_demangle_opname (TYPE_FN_FIELDLIST_NAME (type, |
1897 | method_id), | |
de17c821 DJ |
1898 | dem_opname, DMGL_ANSI); |
1899 | if (!ret) | |
7ba81444 MS |
1900 | ret = cplus_demangle_opname (TYPE_FN_FIELDLIST_NAME (type, |
1901 | method_id), | |
de17c821 DJ |
1902 | dem_opname, 0); |
1903 | if (ret) | |
1904 | TYPE_FN_FIELDLIST_NAME (type, method_id) = xstrdup (dem_opname); | |
1905 | } | |
1906 | } | |
1907 | ||
9655fd1a JK |
1908 | /* Ensure it is in .rodata (if available) by workarounding GCC PR 44690. */ |
1909 | const struct cplus_struct_type cplus_struct_default = { }; | |
c906108c SS |
1910 | |
1911 | void | |
fba45db2 | 1912 | allocate_cplus_struct_type (struct type *type) |
c906108c | 1913 | { |
b4ba55a1 JB |
1914 | if (HAVE_CPLUS_STRUCT (type)) |
1915 | /* Structure was already allocated. Nothing more to do. */ | |
1916 | return; | |
1917 | ||
1918 | TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_CPLUS_STUFF; | |
1919 | TYPE_RAW_CPLUS_SPECIFIC (type) = (struct cplus_struct_type *) | |
1920 | TYPE_ALLOC (type, sizeof (struct cplus_struct_type)); | |
1921 | *(TYPE_RAW_CPLUS_SPECIFIC (type)) = cplus_struct_default; | |
c906108c SS |
1922 | } |
1923 | ||
b4ba55a1 JB |
1924 | const struct gnat_aux_type gnat_aux_default = |
1925 | { NULL }; | |
1926 | ||
1927 | /* Set the TYPE's type-specific kind to TYPE_SPECIFIC_GNAT_STUFF, | |
1928 | and allocate the associated gnat-specific data. The gnat-specific | |
1929 | data is also initialized to gnat_aux_default. */ | |
5212577a | 1930 | |
b4ba55a1 JB |
1931 | void |
1932 | allocate_gnat_aux_type (struct type *type) | |
1933 | { | |
1934 | TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_GNAT_STUFF; | |
1935 | TYPE_GNAT_SPECIFIC (type) = (struct gnat_aux_type *) | |
1936 | TYPE_ALLOC (type, sizeof (struct gnat_aux_type)); | |
1937 | *(TYPE_GNAT_SPECIFIC (type)) = gnat_aux_default; | |
1938 | } | |
1939 | ||
c906108c SS |
1940 | /* Helper function to initialize the standard scalar types. |
1941 | ||
e9bb382b UW |
1942 | If NAME is non-NULL, then we make a copy of the string pointed |
1943 | to by name in the objfile_obstack for that objfile, and initialize | |
1944 | the type name to that copy. There are places (mipsread.c in particular), | |
1945 | where init_type is called with a NULL value for NAME). */ | |
c906108c SS |
1946 | |
1947 | struct type * | |
7ba81444 MS |
1948 | init_type (enum type_code code, int length, int flags, |
1949 | char *name, struct objfile *objfile) | |
c906108c | 1950 | { |
52f0bd74 | 1951 | struct type *type; |
c906108c SS |
1952 | |
1953 | type = alloc_type (objfile); | |
1954 | TYPE_CODE (type) = code; | |
1955 | TYPE_LENGTH (type) = length; | |
876cecd0 TT |
1956 | |
1957 | gdb_assert (!(flags & (TYPE_FLAG_MIN - 1))); | |
1958 | if (flags & TYPE_FLAG_UNSIGNED) | |
1959 | TYPE_UNSIGNED (type) = 1; | |
1960 | if (flags & TYPE_FLAG_NOSIGN) | |
1961 | TYPE_NOSIGN (type) = 1; | |
1962 | if (flags & TYPE_FLAG_STUB) | |
1963 | TYPE_STUB (type) = 1; | |
1964 | if (flags & TYPE_FLAG_TARGET_STUB) | |
1965 | TYPE_TARGET_STUB (type) = 1; | |
1966 | if (flags & TYPE_FLAG_STATIC) | |
1967 | TYPE_STATIC (type) = 1; | |
1968 | if (flags & TYPE_FLAG_PROTOTYPED) | |
1969 | TYPE_PROTOTYPED (type) = 1; | |
1970 | if (flags & TYPE_FLAG_INCOMPLETE) | |
1971 | TYPE_INCOMPLETE (type) = 1; | |
1972 | if (flags & TYPE_FLAG_VARARGS) | |
1973 | TYPE_VARARGS (type) = 1; | |
1974 | if (flags & TYPE_FLAG_VECTOR) | |
1975 | TYPE_VECTOR (type) = 1; | |
1976 | if (flags & TYPE_FLAG_STUB_SUPPORTED) | |
1977 | TYPE_STUB_SUPPORTED (type) = 1; | |
876cecd0 TT |
1978 | if (flags & TYPE_FLAG_FIXED_INSTANCE) |
1979 | TYPE_FIXED_INSTANCE (type) = 1; | |
0875794a JK |
1980 | if (flags & TYPE_FLAG_GNU_IFUNC) |
1981 | TYPE_GNU_IFUNC (type) = 1; | |
876cecd0 | 1982 | |
e9bb382b UW |
1983 | if (name) |
1984 | TYPE_NAME (type) = obsavestring (name, strlen (name), | |
1985 | &objfile->objfile_obstack); | |
c906108c SS |
1986 | |
1987 | /* C++ fancies. */ | |
1988 | ||
973ccf8b | 1989 | if (name && strcmp (name, "char") == 0) |
876cecd0 | 1990 | TYPE_NOSIGN (type) = 1; |
973ccf8b | 1991 | |
b4ba55a1 | 1992 | switch (code) |
c906108c | 1993 | { |
b4ba55a1 JB |
1994 | case TYPE_CODE_STRUCT: |
1995 | case TYPE_CODE_UNION: | |
1996 | case TYPE_CODE_NAMESPACE: | |
1997 | INIT_CPLUS_SPECIFIC (type); | |
1998 | break; | |
1999 | case TYPE_CODE_FLT: | |
2000 | TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_FLOATFORMAT; | |
2001 | break; | |
2002 | case TYPE_CODE_FUNC: | |
b6cdc2c1 | 2003 | INIT_FUNC_SPECIFIC (type); |
b4ba55a1 | 2004 | break; |
c906108c | 2005 | } |
c16abbde | 2006 | return type; |
c906108c | 2007 | } |
5212577a DE |
2008 | \f |
2009 | /* Queries on types. */ | |
c906108c | 2010 | |
c906108c | 2011 | int |
fba45db2 | 2012 | can_dereference (struct type *t) |
c906108c | 2013 | { |
7ba81444 MS |
2014 | /* FIXME: Should we return true for references as well as |
2015 | pointers? */ | |
c906108c SS |
2016 | CHECK_TYPEDEF (t); |
2017 | return | |
2018 | (t != NULL | |
2019 | && TYPE_CODE (t) == TYPE_CODE_PTR | |
2020 | && TYPE_CODE (TYPE_TARGET_TYPE (t)) != TYPE_CODE_VOID); | |
2021 | } | |
2022 | ||
adf40b2e | 2023 | int |
fba45db2 | 2024 | is_integral_type (struct type *t) |
adf40b2e JM |
2025 | { |
2026 | CHECK_TYPEDEF (t); | |
2027 | return | |
2028 | ((t != NULL) | |
d4f3574e SS |
2029 | && ((TYPE_CODE (t) == TYPE_CODE_INT) |
2030 | || (TYPE_CODE (t) == TYPE_CODE_ENUM) | |
4f2aea11 | 2031 | || (TYPE_CODE (t) == TYPE_CODE_FLAGS) |
d4f3574e SS |
2032 | || (TYPE_CODE (t) == TYPE_CODE_CHAR) |
2033 | || (TYPE_CODE (t) == TYPE_CODE_RANGE) | |
2034 | || (TYPE_CODE (t) == TYPE_CODE_BOOL))); | |
adf40b2e JM |
2035 | } |
2036 | ||
e09342b5 TJB |
2037 | /* Return true if TYPE is scalar. */ |
2038 | ||
2039 | static int | |
2040 | is_scalar_type (struct type *type) | |
2041 | { | |
2042 | CHECK_TYPEDEF (type); | |
2043 | ||
2044 | switch (TYPE_CODE (type)) | |
2045 | { | |
2046 | case TYPE_CODE_ARRAY: | |
2047 | case TYPE_CODE_STRUCT: | |
2048 | case TYPE_CODE_UNION: | |
2049 | case TYPE_CODE_SET: | |
2050 | case TYPE_CODE_STRING: | |
e09342b5 TJB |
2051 | return 0; |
2052 | default: | |
2053 | return 1; | |
2054 | } | |
2055 | } | |
2056 | ||
2057 | /* Return true if T is scalar, or a composite type which in practice has | |
90e4670f TJB |
2058 | the memory layout of a scalar type. E.g., an array or struct with only |
2059 | one scalar element inside it, or a union with only scalar elements. */ | |
e09342b5 TJB |
2060 | |
2061 | int | |
2062 | is_scalar_type_recursive (struct type *t) | |
2063 | { | |
2064 | CHECK_TYPEDEF (t); | |
2065 | ||
2066 | if (is_scalar_type (t)) | |
2067 | return 1; | |
2068 | /* Are we dealing with an array or string of known dimensions? */ | |
2069 | else if ((TYPE_CODE (t) == TYPE_CODE_ARRAY | |
2070 | || TYPE_CODE (t) == TYPE_CODE_STRING) && TYPE_NFIELDS (t) == 1 | |
2071 | && TYPE_CODE (TYPE_INDEX_TYPE (t)) == TYPE_CODE_RANGE) | |
2072 | { | |
2073 | LONGEST low_bound, high_bound; | |
2074 | struct type *elt_type = check_typedef (TYPE_TARGET_TYPE (t)); | |
2075 | ||
2076 | get_discrete_bounds (TYPE_INDEX_TYPE (t), &low_bound, &high_bound); | |
2077 | ||
2078 | return high_bound == low_bound && is_scalar_type_recursive (elt_type); | |
2079 | } | |
2080 | /* Are we dealing with a struct with one element? */ | |
2081 | else if (TYPE_CODE (t) == TYPE_CODE_STRUCT && TYPE_NFIELDS (t) == 1) | |
2082 | return is_scalar_type_recursive (TYPE_FIELD_TYPE (t, 0)); | |
2083 | else if (TYPE_CODE (t) == TYPE_CODE_UNION) | |
2084 | { | |
2085 | int i, n = TYPE_NFIELDS (t); | |
2086 | ||
2087 | /* If all elements of the union are scalar, then the union is scalar. */ | |
2088 | for (i = 0; i < n; i++) | |
2089 | if (!is_scalar_type_recursive (TYPE_FIELD_TYPE (t, i))) | |
2090 | return 0; | |
2091 | ||
2092 | return 1; | |
2093 | } | |
2094 | ||
2095 | return 0; | |
2096 | } | |
2097 | ||
4e8f195d TT |
2098 | /* A helper function which returns true if types A and B represent the |
2099 | "same" class type. This is true if the types have the same main | |
2100 | type, or the same name. */ | |
2101 | ||
2102 | int | |
2103 | class_types_same_p (const struct type *a, const struct type *b) | |
2104 | { | |
2105 | return (TYPE_MAIN_TYPE (a) == TYPE_MAIN_TYPE (b) | |
2106 | || (TYPE_NAME (a) && TYPE_NAME (b) | |
2107 | && !strcmp (TYPE_NAME (a), TYPE_NAME (b)))); | |
2108 | } | |
2109 | ||
a9d5ef47 SW |
2110 | /* If BASE is an ancestor of DCLASS return the distance between them. |
2111 | otherwise return -1; | |
2112 | eg: | |
2113 | ||
2114 | class A {}; | |
2115 | class B: public A {}; | |
2116 | class C: public B {}; | |
2117 | class D: C {}; | |
2118 | ||
2119 | distance_to_ancestor (A, A, 0) = 0 | |
2120 | distance_to_ancestor (A, B, 0) = 1 | |
2121 | distance_to_ancestor (A, C, 0) = 2 | |
2122 | distance_to_ancestor (A, D, 0) = 3 | |
2123 | ||
2124 | If PUBLIC is 1 then only public ancestors are considered, | |
2125 | and the function returns the distance only if BASE is a public ancestor | |
2126 | of DCLASS. | |
2127 | Eg: | |
2128 | ||
0963b4bd | 2129 | distance_to_ancestor (A, D, 1) = -1. */ |
c906108c | 2130 | |
0526b37a | 2131 | static int |
a9d5ef47 | 2132 | distance_to_ancestor (struct type *base, struct type *dclass, int public) |
c906108c SS |
2133 | { |
2134 | int i; | |
a9d5ef47 | 2135 | int d; |
c5aa993b | 2136 | |
c906108c SS |
2137 | CHECK_TYPEDEF (base); |
2138 | CHECK_TYPEDEF (dclass); | |
2139 | ||
4e8f195d | 2140 | if (class_types_same_p (base, dclass)) |
a9d5ef47 | 2141 | return 0; |
c906108c SS |
2142 | |
2143 | for (i = 0; i < TYPE_N_BASECLASSES (dclass); i++) | |
4e8f195d | 2144 | { |
0526b37a SW |
2145 | if (public && ! BASETYPE_VIA_PUBLIC (dclass, i)) |
2146 | continue; | |
2147 | ||
a9d5ef47 SW |
2148 | d = distance_to_ancestor (base, TYPE_BASECLASS (dclass, i), public); |
2149 | if (d >= 0) | |
2150 | return 1 + d; | |
4e8f195d | 2151 | } |
c906108c | 2152 | |
a9d5ef47 | 2153 | return -1; |
c906108c | 2154 | } |
4e8f195d | 2155 | |
0526b37a SW |
2156 | /* Check whether BASE is an ancestor or base class or DCLASS |
2157 | Return 1 if so, and 0 if not. | |
2158 | Note: If BASE and DCLASS are of the same type, this function | |
2159 | will return 1. So for some class A, is_ancestor (A, A) will | |
2160 | return 1. */ | |
2161 | ||
2162 | int | |
2163 | is_ancestor (struct type *base, struct type *dclass) | |
2164 | { | |
a9d5ef47 | 2165 | return distance_to_ancestor (base, dclass, 0) >= 0; |
0526b37a SW |
2166 | } |
2167 | ||
4e8f195d TT |
2168 | /* Like is_ancestor, but only returns true when BASE is a public |
2169 | ancestor of DCLASS. */ | |
2170 | ||
2171 | int | |
2172 | is_public_ancestor (struct type *base, struct type *dclass) | |
2173 | { | |
a9d5ef47 | 2174 | return distance_to_ancestor (base, dclass, 1) >= 0; |
4e8f195d TT |
2175 | } |
2176 | ||
2177 | /* A helper function for is_unique_ancestor. */ | |
2178 | ||
2179 | static int | |
2180 | is_unique_ancestor_worker (struct type *base, struct type *dclass, | |
2181 | int *offset, | |
8af8e3bc PA |
2182 | const gdb_byte *valaddr, int embedded_offset, |
2183 | CORE_ADDR address, struct value *val) | |
4e8f195d TT |
2184 | { |
2185 | int i, count = 0; | |
2186 | ||
2187 | CHECK_TYPEDEF (base); | |
2188 | CHECK_TYPEDEF (dclass); | |
2189 | ||
2190 | for (i = 0; i < TYPE_N_BASECLASSES (dclass) && count < 2; ++i) | |
2191 | { | |
8af8e3bc PA |
2192 | struct type *iter; |
2193 | int this_offset; | |
4e8f195d | 2194 | |
8af8e3bc PA |
2195 | iter = check_typedef (TYPE_BASECLASS (dclass, i)); |
2196 | ||
2197 | this_offset = baseclass_offset (dclass, i, valaddr, embedded_offset, | |
2198 | address, val); | |
4e8f195d TT |
2199 | |
2200 | if (class_types_same_p (base, iter)) | |
2201 | { | |
2202 | /* If this is the first subclass, set *OFFSET and set count | |
2203 | to 1. Otherwise, if this is at the same offset as | |
2204 | previous instances, do nothing. Otherwise, increment | |
2205 | count. */ | |
2206 | if (*offset == -1) | |
2207 | { | |
2208 | *offset = this_offset; | |
2209 | count = 1; | |
2210 | } | |
2211 | else if (this_offset == *offset) | |
2212 | { | |
2213 | /* Nothing. */ | |
2214 | } | |
2215 | else | |
2216 | ++count; | |
2217 | } | |
2218 | else | |
2219 | count += is_unique_ancestor_worker (base, iter, offset, | |
8af8e3bc PA |
2220 | valaddr, |
2221 | embedded_offset + this_offset, | |
2222 | address, val); | |
4e8f195d TT |
2223 | } |
2224 | ||
2225 | return count; | |
2226 | } | |
2227 | ||
2228 | /* Like is_ancestor, but only returns true if BASE is a unique base | |
2229 | class of the type of VAL. */ | |
2230 | ||
2231 | int | |
2232 | is_unique_ancestor (struct type *base, struct value *val) | |
2233 | { | |
2234 | int offset = -1; | |
2235 | ||
2236 | return is_unique_ancestor_worker (base, value_type (val), &offset, | |
8af8e3bc PA |
2237 | value_contents_for_printing (val), |
2238 | value_embedded_offset (val), | |
2239 | value_address (val), val) == 1; | |
4e8f195d TT |
2240 | } |
2241 | ||
c906108c | 2242 | \f |
5212577a | 2243 | /* Overload resolution. */ |
c906108c | 2244 | |
6403aeea SW |
2245 | /* Return the sum of the rank of A with the rank of B. */ |
2246 | ||
2247 | struct rank | |
2248 | sum_ranks (struct rank a, struct rank b) | |
2249 | { | |
2250 | struct rank c; | |
2251 | c.rank = a.rank + b.rank; | |
a9d5ef47 | 2252 | c.subrank = a.subrank + b.subrank; |
6403aeea SW |
2253 | return c; |
2254 | } | |
2255 | ||
2256 | /* Compare rank A and B and return: | |
2257 | 0 if a = b | |
2258 | 1 if a is better than b | |
2259 | -1 if b is better than a. */ | |
2260 | ||
2261 | int | |
2262 | compare_ranks (struct rank a, struct rank b) | |
2263 | { | |
2264 | if (a.rank == b.rank) | |
a9d5ef47 SW |
2265 | { |
2266 | if (a.subrank == b.subrank) | |
2267 | return 0; | |
2268 | if (a.subrank < b.subrank) | |
2269 | return 1; | |
2270 | if (a.subrank > b.subrank) | |
2271 | return -1; | |
2272 | } | |
6403aeea SW |
2273 | |
2274 | if (a.rank < b.rank) | |
2275 | return 1; | |
2276 | ||
0963b4bd | 2277 | /* a.rank > b.rank */ |
6403aeea SW |
2278 | return -1; |
2279 | } | |
c5aa993b | 2280 | |
0963b4bd | 2281 | /* Functions for overload resolution begin here. */ |
c906108c SS |
2282 | |
2283 | /* Compare two badness vectors A and B and return the result. | |
7ba81444 MS |
2284 | 0 => A and B are identical |
2285 | 1 => A and B are incomparable | |
2286 | 2 => A is better than B | |
2287 | 3 => A is worse than B */ | |
c906108c SS |
2288 | |
2289 | int | |
fba45db2 | 2290 | compare_badness (struct badness_vector *a, struct badness_vector *b) |
c906108c SS |
2291 | { |
2292 | int i; | |
2293 | int tmp; | |
c5aa993b JM |
2294 | short found_pos = 0; /* any positives in c? */ |
2295 | short found_neg = 0; /* any negatives in c? */ | |
2296 | ||
2297 | /* differing lengths => incomparable */ | |
c906108c SS |
2298 | if (a->length != b->length) |
2299 | return 1; | |
2300 | ||
c5aa993b JM |
2301 | /* Subtract b from a */ |
2302 | for (i = 0; i < a->length; i++) | |
c906108c | 2303 | { |
6403aeea | 2304 | tmp = compare_ranks (b->rank[i], a->rank[i]); |
c906108c | 2305 | if (tmp > 0) |
c5aa993b | 2306 | found_pos = 1; |
c906108c | 2307 | else if (tmp < 0) |
c5aa993b | 2308 | found_neg = 1; |
c906108c SS |
2309 | } |
2310 | ||
2311 | if (found_pos) | |
2312 | { | |
2313 | if (found_neg) | |
c5aa993b | 2314 | return 1; /* incomparable */ |
c906108c | 2315 | else |
c5aa993b | 2316 | return 3; /* A > B */ |
c906108c | 2317 | } |
c5aa993b JM |
2318 | else |
2319 | /* no positives */ | |
c906108c SS |
2320 | { |
2321 | if (found_neg) | |
c5aa993b | 2322 | return 2; /* A < B */ |
c906108c | 2323 | else |
c5aa993b | 2324 | return 0; /* A == B */ |
c906108c SS |
2325 | } |
2326 | } | |
2327 | ||
7ba81444 MS |
2328 | /* Rank a function by comparing its parameter types (PARMS, length |
2329 | NPARMS), to the types of an argument list (ARGS, length NARGS). | |
2330 | Return a pointer to a badness vector. This has NARGS + 1 | |
2331 | entries. */ | |
c906108c SS |
2332 | |
2333 | struct badness_vector * | |
7ba81444 | 2334 | rank_function (struct type **parms, int nparms, |
da096638 | 2335 | struct value **args, int nargs) |
c906108c SS |
2336 | { |
2337 | int i; | |
c5aa993b | 2338 | struct badness_vector *bv; |
c906108c SS |
2339 | int min_len = nparms < nargs ? nparms : nargs; |
2340 | ||
2341 | bv = xmalloc (sizeof (struct badness_vector)); | |
0963b4bd | 2342 | bv->length = nargs + 1; /* add 1 for the length-match rank. */ |
c906108c SS |
2343 | bv->rank = xmalloc ((nargs + 1) * sizeof (int)); |
2344 | ||
2345 | /* First compare the lengths of the supplied lists. | |
7ba81444 | 2346 | If there is a mismatch, set it to a high value. */ |
c5aa993b | 2347 | |
c906108c | 2348 | /* pai/1997-06-03 FIXME: when we have debug info about default |
7ba81444 MS |
2349 | arguments and ellipsis parameter lists, we should consider those |
2350 | and rank the length-match more finely. */ | |
c906108c | 2351 | |
6403aeea SW |
2352 | LENGTH_MATCH (bv) = (nargs != nparms) |
2353 | ? LENGTH_MISMATCH_BADNESS | |
2354 | : EXACT_MATCH_BADNESS; | |
c906108c | 2355 | |
0963b4bd | 2356 | /* Now rank all the parameters of the candidate function. */ |
74cc24b0 | 2357 | for (i = 1; i <= min_len; i++) |
da096638 KS |
2358 | bv->rank[i] = rank_one_type (parms[i - 1], value_type (args[i - 1]), |
2359 | args[i - 1]); | |
c906108c | 2360 | |
0963b4bd | 2361 | /* If more arguments than parameters, add dummy entries. */ |
c5aa993b | 2362 | for (i = min_len + 1; i <= nargs; i++) |
c906108c SS |
2363 | bv->rank[i] = TOO_FEW_PARAMS_BADNESS; |
2364 | ||
2365 | return bv; | |
2366 | } | |
2367 | ||
973ccf8b DJ |
2368 | /* Compare the names of two integer types, assuming that any sign |
2369 | qualifiers have been checked already. We do it this way because | |
2370 | there may be an "int" in the name of one of the types. */ | |
2371 | ||
2372 | static int | |
2373 | integer_types_same_name_p (const char *first, const char *second) | |
2374 | { | |
2375 | int first_p, second_p; | |
2376 | ||
7ba81444 MS |
2377 | /* If both are shorts, return 1; if neither is a short, keep |
2378 | checking. */ | |
973ccf8b DJ |
2379 | first_p = (strstr (first, "short") != NULL); |
2380 | second_p = (strstr (second, "short") != NULL); | |
2381 | if (first_p && second_p) | |
2382 | return 1; | |
2383 | if (first_p || second_p) | |
2384 | return 0; | |
2385 | ||
2386 | /* Likewise for long. */ | |
2387 | first_p = (strstr (first, "long") != NULL); | |
2388 | second_p = (strstr (second, "long") != NULL); | |
2389 | if (first_p && second_p) | |
2390 | return 1; | |
2391 | if (first_p || second_p) | |
2392 | return 0; | |
2393 | ||
2394 | /* Likewise for char. */ | |
2395 | first_p = (strstr (first, "char") != NULL); | |
2396 | second_p = (strstr (second, "char") != NULL); | |
2397 | if (first_p && second_p) | |
2398 | return 1; | |
2399 | if (first_p || second_p) | |
2400 | return 0; | |
2401 | ||
2402 | /* They must both be ints. */ | |
2403 | return 1; | |
2404 | } | |
2405 | ||
7062b0a0 SW |
2406 | /* Compares type A to type B returns 1 if the represent the same type |
2407 | 0 otherwise. */ | |
2408 | ||
2409 | static int | |
2410 | types_equal (struct type *a, struct type *b) | |
2411 | { | |
2412 | /* Identical type pointers. */ | |
2413 | /* However, this still doesn't catch all cases of same type for b | |
2414 | and a. The reason is that builtin types are different from | |
2415 | the same ones constructed from the object. */ | |
2416 | if (a == b) | |
2417 | return 1; | |
2418 | ||
2419 | /* Resolve typedefs */ | |
2420 | if (TYPE_CODE (a) == TYPE_CODE_TYPEDEF) | |
2421 | a = check_typedef (a); | |
2422 | if (TYPE_CODE (b) == TYPE_CODE_TYPEDEF) | |
2423 | b = check_typedef (b); | |
2424 | ||
2425 | /* If after resolving typedefs a and b are not of the same type | |
2426 | code then they are not equal. */ | |
2427 | if (TYPE_CODE (a) != TYPE_CODE (b)) | |
2428 | return 0; | |
2429 | ||
2430 | /* If a and b are both pointers types or both reference types then | |
2431 | they are equal of the same type iff the objects they refer to are | |
2432 | of the same type. */ | |
2433 | if (TYPE_CODE (a) == TYPE_CODE_PTR | |
2434 | || TYPE_CODE (a) == TYPE_CODE_REF) | |
2435 | return types_equal (TYPE_TARGET_TYPE (a), | |
2436 | TYPE_TARGET_TYPE (b)); | |
2437 | ||
0963b4bd | 2438 | /* Well, damnit, if the names are exactly the same, I'll say they |
7062b0a0 SW |
2439 | are exactly the same. This happens when we generate method |
2440 | stubs. The types won't point to the same address, but they | |
0963b4bd | 2441 | really are the same. */ |
7062b0a0 SW |
2442 | |
2443 | if (TYPE_NAME (a) && TYPE_NAME (b) | |
2444 | && strcmp (TYPE_NAME (a), TYPE_NAME (b)) == 0) | |
2445 | return 1; | |
2446 | ||
2447 | /* Check if identical after resolving typedefs. */ | |
2448 | if (a == b) | |
2449 | return 1; | |
2450 | ||
2451 | return 0; | |
2452 | } | |
2453 | ||
c906108c SS |
2454 | /* Compare one type (PARM) for compatibility with another (ARG). |
2455 | * PARM is intended to be the parameter type of a function; and | |
2456 | * ARG is the supplied argument's type. This function tests if | |
2457 | * the latter can be converted to the former. | |
da096638 | 2458 | * VALUE is the argument's value or NULL if none (or called recursively) |
c906108c SS |
2459 | * |
2460 | * Return 0 if they are identical types; | |
2461 | * Otherwise, return an integer which corresponds to how compatible | |
7ba81444 MS |
2462 | * PARM is to ARG. The higher the return value, the worse the match. |
2463 | * Generally the "bad" conversions are all uniformly assigned a 100. */ | |
c906108c | 2464 | |
6403aeea | 2465 | struct rank |
da096638 | 2466 | rank_one_type (struct type *parm, struct type *arg, struct value *value) |
c906108c | 2467 | { |
a9d5ef47 | 2468 | struct rank rank = {0,0}; |
7062b0a0 SW |
2469 | |
2470 | if (types_equal (parm, arg)) | |
6403aeea | 2471 | return EXACT_MATCH_BADNESS; |
c906108c SS |
2472 | |
2473 | /* Resolve typedefs */ | |
2474 | if (TYPE_CODE (parm) == TYPE_CODE_TYPEDEF) | |
2475 | parm = check_typedef (parm); | |
2476 | if (TYPE_CODE (arg) == TYPE_CODE_TYPEDEF) | |
2477 | arg = check_typedef (arg); | |
2478 | ||
db577aea | 2479 | /* See through references, since we can almost make non-references |
7ba81444 | 2480 | references. */ |
db577aea | 2481 | if (TYPE_CODE (arg) == TYPE_CODE_REF) |
da096638 | 2482 | return (sum_ranks (rank_one_type (parm, TYPE_TARGET_TYPE (arg), NULL), |
6403aeea | 2483 | REFERENCE_CONVERSION_BADNESS)); |
db577aea | 2484 | if (TYPE_CODE (parm) == TYPE_CODE_REF) |
da096638 | 2485 | return (sum_ranks (rank_one_type (TYPE_TARGET_TYPE (parm), arg, NULL), |
6403aeea | 2486 | REFERENCE_CONVERSION_BADNESS)); |
5d161b24 | 2487 | if (overload_debug) |
7ba81444 MS |
2488 | /* Debugging only. */ |
2489 | fprintf_filtered (gdb_stderr, | |
2490 | "------ Arg is %s [%d], parm is %s [%d]\n", | |
2491 | TYPE_NAME (arg), TYPE_CODE (arg), | |
2492 | TYPE_NAME (parm), TYPE_CODE (parm)); | |
c906108c | 2493 | |
0963b4bd | 2494 | /* x -> y means arg of type x being supplied for parameter of type y. */ |
c906108c SS |
2495 | |
2496 | switch (TYPE_CODE (parm)) | |
2497 | { | |
c5aa993b JM |
2498 | case TYPE_CODE_PTR: |
2499 | switch (TYPE_CODE (arg)) | |
2500 | { | |
2501 | case TYPE_CODE_PTR: | |
7062b0a0 SW |
2502 | |
2503 | /* Allowed pointer conversions are: | |
2504 | (a) pointer to void-pointer conversion. */ | |
2505 | if (TYPE_CODE (TYPE_TARGET_TYPE (parm)) == TYPE_CODE_VOID) | |
c5aa993b | 2506 | return VOID_PTR_CONVERSION_BADNESS; |
7062b0a0 SW |
2507 | |
2508 | /* (b) pointer to ancestor-pointer conversion. */ | |
a9d5ef47 SW |
2509 | rank.subrank = distance_to_ancestor (TYPE_TARGET_TYPE (parm), |
2510 | TYPE_TARGET_TYPE (arg), | |
2511 | 0); | |
2512 | if (rank.subrank >= 0) | |
2513 | return sum_ranks (BASE_PTR_CONVERSION_BADNESS, rank); | |
7062b0a0 SW |
2514 | |
2515 | return INCOMPATIBLE_TYPE_BADNESS; | |
c5aa993b | 2516 | case TYPE_CODE_ARRAY: |
7062b0a0 SW |
2517 | if (types_equal (TYPE_TARGET_TYPE (parm), |
2518 | TYPE_TARGET_TYPE (arg))) | |
6403aeea | 2519 | return EXACT_MATCH_BADNESS; |
7062b0a0 | 2520 | return INCOMPATIBLE_TYPE_BADNESS; |
c5aa993b | 2521 | case TYPE_CODE_FUNC: |
da096638 | 2522 | return rank_one_type (TYPE_TARGET_TYPE (parm), arg, NULL); |
c5aa993b | 2523 | case TYPE_CODE_INT: |
a451cb65 | 2524 | if (value != NULL && TYPE_CODE (value_type (value)) == TYPE_CODE_INT) |
da096638 | 2525 | { |
a451cb65 KS |
2526 | if (value_as_long (value) == 0) |
2527 | { | |
2528 | /* Null pointer conversion: allow it to be cast to a pointer. | |
2529 | [4.10.1 of C++ standard draft n3290] */ | |
2530 | return NULL_POINTER_CONVERSION_BADNESS; | |
2531 | } | |
2532 | else | |
2533 | { | |
2534 | /* If type checking is disabled, allow the conversion. */ | |
2535 | if (!strict_type_checking) | |
2536 | return NS_INTEGER_POINTER_CONVERSION_BADNESS; | |
2537 | } | |
da096638 KS |
2538 | } |
2539 | /* fall through */ | |
c5aa993b | 2540 | case TYPE_CODE_ENUM: |
4f2aea11 | 2541 | case TYPE_CODE_FLAGS: |
c5aa993b JM |
2542 | case TYPE_CODE_CHAR: |
2543 | case TYPE_CODE_RANGE: | |
2544 | case TYPE_CODE_BOOL: | |
c5aa993b JM |
2545 | default: |
2546 | return INCOMPATIBLE_TYPE_BADNESS; | |
2547 | } | |
2548 | case TYPE_CODE_ARRAY: | |
2549 | switch (TYPE_CODE (arg)) | |
2550 | { | |
2551 | case TYPE_CODE_PTR: | |
2552 | case TYPE_CODE_ARRAY: | |
7ba81444 | 2553 | return rank_one_type (TYPE_TARGET_TYPE (parm), |
da096638 | 2554 | TYPE_TARGET_TYPE (arg), NULL); |
c5aa993b JM |
2555 | default: |
2556 | return INCOMPATIBLE_TYPE_BADNESS; | |
2557 | } | |
2558 | case TYPE_CODE_FUNC: | |
2559 | switch (TYPE_CODE (arg)) | |
2560 | { | |
2561 | case TYPE_CODE_PTR: /* funcptr -> func */ | |
da096638 | 2562 | return rank_one_type (parm, TYPE_TARGET_TYPE (arg), NULL); |
c5aa993b JM |
2563 | default: |
2564 | return INCOMPATIBLE_TYPE_BADNESS; | |
2565 | } | |
2566 | case TYPE_CODE_INT: | |
2567 | switch (TYPE_CODE (arg)) | |
2568 | { | |
2569 | case TYPE_CODE_INT: | |
2570 | if (TYPE_LENGTH (arg) == TYPE_LENGTH (parm)) | |
2571 | { | |
2572 | /* Deal with signed, unsigned, and plain chars and | |
7ba81444 | 2573 | signed and unsigned ints. */ |
c5aa993b JM |
2574 | if (TYPE_NOSIGN (parm)) |
2575 | { | |
0963b4bd | 2576 | /* This case only for character types. */ |
7ba81444 | 2577 | if (TYPE_NOSIGN (arg)) |
6403aeea | 2578 | return EXACT_MATCH_BADNESS; /* plain char -> plain char */ |
7ba81444 MS |
2579 | else /* signed/unsigned char -> plain char */ |
2580 | return INTEGER_CONVERSION_BADNESS; | |
c5aa993b JM |
2581 | } |
2582 | else if (TYPE_UNSIGNED (parm)) | |
2583 | { | |
2584 | if (TYPE_UNSIGNED (arg)) | |
2585 | { | |
7ba81444 MS |
2586 | /* unsigned int -> unsigned int, or |
2587 | unsigned long -> unsigned long */ | |
2588 | if (integer_types_same_name_p (TYPE_NAME (parm), | |
2589 | TYPE_NAME (arg))) | |
6403aeea | 2590 | return EXACT_MATCH_BADNESS; |
7ba81444 MS |
2591 | else if (integer_types_same_name_p (TYPE_NAME (arg), |
2592 | "int") | |
2593 | && integer_types_same_name_p (TYPE_NAME (parm), | |
2594 | "long")) | |
3e43a32a MS |
2595 | /* unsigned int -> unsigned long */ |
2596 | return INTEGER_PROMOTION_BADNESS; | |
c5aa993b | 2597 | else |
3e43a32a MS |
2598 | /* unsigned long -> unsigned int */ |
2599 | return INTEGER_CONVERSION_BADNESS; | |
c5aa993b JM |
2600 | } |
2601 | else | |
2602 | { | |
7ba81444 MS |
2603 | if (integer_types_same_name_p (TYPE_NAME (arg), |
2604 | "long") | |
2605 | && integer_types_same_name_p (TYPE_NAME (parm), | |
2606 | "int")) | |
3e43a32a MS |
2607 | /* signed long -> unsigned int */ |
2608 | return INTEGER_CONVERSION_BADNESS; | |
c5aa993b | 2609 | else |
3e43a32a MS |
2610 | /* signed int/long -> unsigned int/long */ |
2611 | return INTEGER_CONVERSION_BADNESS; | |
c5aa993b JM |
2612 | } |
2613 | } | |
2614 | else if (!TYPE_NOSIGN (arg) && !TYPE_UNSIGNED (arg)) | |
2615 | { | |
7ba81444 MS |
2616 | if (integer_types_same_name_p (TYPE_NAME (parm), |
2617 | TYPE_NAME (arg))) | |
6403aeea | 2618 | return EXACT_MATCH_BADNESS; |
7ba81444 MS |
2619 | else if (integer_types_same_name_p (TYPE_NAME (arg), |
2620 | "int") | |
2621 | && integer_types_same_name_p (TYPE_NAME (parm), | |
2622 | "long")) | |
c5aa993b JM |
2623 | return INTEGER_PROMOTION_BADNESS; |
2624 | else | |
1c5cb38e | 2625 | return INTEGER_CONVERSION_BADNESS; |
c5aa993b JM |
2626 | } |
2627 | else | |
1c5cb38e | 2628 | return INTEGER_CONVERSION_BADNESS; |
c5aa993b JM |
2629 | } |
2630 | else if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm)) | |
2631 | return INTEGER_PROMOTION_BADNESS; | |
2632 | else | |
1c5cb38e | 2633 | return INTEGER_CONVERSION_BADNESS; |
c5aa993b | 2634 | case TYPE_CODE_ENUM: |
4f2aea11 | 2635 | case TYPE_CODE_FLAGS: |
c5aa993b JM |
2636 | case TYPE_CODE_CHAR: |
2637 | case TYPE_CODE_RANGE: | |
2638 | case TYPE_CODE_BOOL: | |
2639 | return INTEGER_PROMOTION_BADNESS; | |
2640 | case TYPE_CODE_FLT: | |
2641 | return INT_FLOAT_CONVERSION_BADNESS; | |
2642 | case TYPE_CODE_PTR: | |
2643 | return NS_POINTER_CONVERSION_BADNESS; | |
2644 | default: | |
2645 | return INCOMPATIBLE_TYPE_BADNESS; | |
2646 | } | |
2647 | break; | |
2648 | case TYPE_CODE_ENUM: | |
2649 | switch (TYPE_CODE (arg)) | |
2650 | { | |
2651 | case TYPE_CODE_INT: | |
2652 | case TYPE_CODE_CHAR: | |
2653 | case TYPE_CODE_RANGE: | |
2654 | case TYPE_CODE_BOOL: | |
2655 | case TYPE_CODE_ENUM: | |
1c5cb38e | 2656 | return INTEGER_CONVERSION_BADNESS; |
c5aa993b JM |
2657 | case TYPE_CODE_FLT: |
2658 | return INT_FLOAT_CONVERSION_BADNESS; | |
2659 | default: | |
2660 | return INCOMPATIBLE_TYPE_BADNESS; | |
2661 | } | |
2662 | break; | |
2663 | case TYPE_CODE_CHAR: | |
2664 | switch (TYPE_CODE (arg)) | |
2665 | { | |
2666 | case TYPE_CODE_RANGE: | |
2667 | case TYPE_CODE_BOOL: | |
2668 | case TYPE_CODE_ENUM: | |
1c5cb38e | 2669 | return INTEGER_CONVERSION_BADNESS; |
c5aa993b JM |
2670 | case TYPE_CODE_FLT: |
2671 | return INT_FLOAT_CONVERSION_BADNESS; | |
2672 | case TYPE_CODE_INT: | |
2673 | if (TYPE_LENGTH (arg) > TYPE_LENGTH (parm)) | |
1c5cb38e | 2674 | return INTEGER_CONVERSION_BADNESS; |
c5aa993b JM |
2675 | else if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm)) |
2676 | return INTEGER_PROMOTION_BADNESS; | |
2677 | /* >>> !! else fall through !! <<< */ | |
2678 | case TYPE_CODE_CHAR: | |
7ba81444 MS |
2679 | /* Deal with signed, unsigned, and plain chars for C++ and |
2680 | with int cases falling through from previous case. */ | |
c5aa993b JM |
2681 | if (TYPE_NOSIGN (parm)) |
2682 | { | |
2683 | if (TYPE_NOSIGN (arg)) | |
6403aeea | 2684 | return EXACT_MATCH_BADNESS; |
c5aa993b | 2685 | else |
1c5cb38e | 2686 | return INTEGER_CONVERSION_BADNESS; |
c5aa993b JM |
2687 | } |
2688 | else if (TYPE_UNSIGNED (parm)) | |
2689 | { | |
2690 | if (TYPE_UNSIGNED (arg)) | |
6403aeea | 2691 | return EXACT_MATCH_BADNESS; |
c5aa993b JM |
2692 | else |
2693 | return INTEGER_PROMOTION_BADNESS; | |
2694 | } | |
2695 | else if (!TYPE_NOSIGN (arg) && !TYPE_UNSIGNED (arg)) | |
6403aeea | 2696 | return EXACT_MATCH_BADNESS; |
c5aa993b | 2697 | else |
1c5cb38e | 2698 | return INTEGER_CONVERSION_BADNESS; |
c5aa993b JM |
2699 | default: |
2700 | return INCOMPATIBLE_TYPE_BADNESS; | |
2701 | } | |
2702 | break; | |
2703 | case TYPE_CODE_RANGE: | |
2704 | switch (TYPE_CODE (arg)) | |
2705 | { | |
2706 | case TYPE_CODE_INT: | |
2707 | case TYPE_CODE_CHAR: | |
2708 | case TYPE_CODE_RANGE: | |
2709 | case TYPE_CODE_BOOL: | |
2710 | case TYPE_CODE_ENUM: | |
1c5cb38e | 2711 | return INTEGER_CONVERSION_BADNESS; |
c5aa993b JM |
2712 | case TYPE_CODE_FLT: |
2713 | return INT_FLOAT_CONVERSION_BADNESS; | |
2714 | default: | |
2715 | return INCOMPATIBLE_TYPE_BADNESS; | |
2716 | } | |
2717 | break; | |
2718 | case TYPE_CODE_BOOL: | |
2719 | switch (TYPE_CODE (arg)) | |
2720 | { | |
5b4f6e25 KS |
2721 | /* n3290 draft, section 4.12.1 (conv.bool): |
2722 | ||
2723 | "A prvalue of arithmetic, unscoped enumeration, pointer, or | |
2724 | pointer to member type can be converted to a prvalue of type | |
2725 | bool. A zero value, null pointer value, or null member pointer | |
2726 | value is converted to false; any other value is converted to | |
2727 | true. A prvalue of type std::nullptr_t can be converted to a | |
2728 | prvalue of type bool; the resulting value is false." */ | |
c5aa993b JM |
2729 | case TYPE_CODE_INT: |
2730 | case TYPE_CODE_CHAR: | |
c5aa993b JM |
2731 | case TYPE_CODE_ENUM: |
2732 | case TYPE_CODE_FLT: | |
5b4f6e25 | 2733 | case TYPE_CODE_MEMBERPTR: |
c5aa993b | 2734 | case TYPE_CODE_PTR: |
5b4f6e25 KS |
2735 | return BOOL_CONVERSION_BADNESS; |
2736 | case TYPE_CODE_RANGE: | |
2737 | return INCOMPATIBLE_TYPE_BADNESS; | |
c5aa993b | 2738 | case TYPE_CODE_BOOL: |
6403aeea | 2739 | return EXACT_MATCH_BADNESS; |
c5aa993b JM |
2740 | default: |
2741 | return INCOMPATIBLE_TYPE_BADNESS; | |
2742 | } | |
2743 | break; | |
2744 | case TYPE_CODE_FLT: | |
2745 | switch (TYPE_CODE (arg)) | |
2746 | { | |
2747 | case TYPE_CODE_FLT: | |
2748 | if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm)) | |
2749 | return FLOAT_PROMOTION_BADNESS; | |
2750 | else if (TYPE_LENGTH (arg) == TYPE_LENGTH (parm)) | |
6403aeea | 2751 | return EXACT_MATCH_BADNESS; |
c5aa993b JM |
2752 | else |
2753 | return FLOAT_CONVERSION_BADNESS; | |
2754 | case TYPE_CODE_INT: | |
2755 | case TYPE_CODE_BOOL: | |
2756 | case TYPE_CODE_ENUM: | |
2757 | case TYPE_CODE_RANGE: | |
2758 | case TYPE_CODE_CHAR: | |
2759 | return INT_FLOAT_CONVERSION_BADNESS; | |
2760 | default: | |
2761 | return INCOMPATIBLE_TYPE_BADNESS; | |
2762 | } | |
2763 | break; | |
2764 | case TYPE_CODE_COMPLEX: | |
2765 | switch (TYPE_CODE (arg)) | |
7ba81444 | 2766 | { /* Strictly not needed for C++, but... */ |
c5aa993b JM |
2767 | case TYPE_CODE_FLT: |
2768 | return FLOAT_PROMOTION_BADNESS; | |
2769 | case TYPE_CODE_COMPLEX: | |
6403aeea | 2770 | return EXACT_MATCH_BADNESS; |
c5aa993b JM |
2771 | default: |
2772 | return INCOMPATIBLE_TYPE_BADNESS; | |
2773 | } | |
2774 | break; | |
2775 | case TYPE_CODE_STRUCT: | |
0963b4bd | 2776 | /* currently same as TYPE_CODE_CLASS. */ |
c5aa993b JM |
2777 | switch (TYPE_CODE (arg)) |
2778 | { | |
2779 | case TYPE_CODE_STRUCT: | |
2780 | /* Check for derivation */ | |
a9d5ef47 SW |
2781 | rank.subrank = distance_to_ancestor (parm, arg, 0); |
2782 | if (rank.subrank >= 0) | |
2783 | return sum_ranks (BASE_CONVERSION_BADNESS, rank); | |
c5aa993b JM |
2784 | /* else fall through */ |
2785 | default: | |
2786 | return INCOMPATIBLE_TYPE_BADNESS; | |
2787 | } | |
2788 | break; | |
2789 | case TYPE_CODE_UNION: | |
2790 | switch (TYPE_CODE (arg)) | |
2791 | { | |
2792 | case TYPE_CODE_UNION: | |
2793 | default: | |
2794 | return INCOMPATIBLE_TYPE_BADNESS; | |
2795 | } | |
2796 | break; | |
0d5de010 | 2797 | case TYPE_CODE_MEMBERPTR: |
c5aa993b JM |
2798 | switch (TYPE_CODE (arg)) |
2799 | { | |
2800 | default: | |
2801 | return INCOMPATIBLE_TYPE_BADNESS; | |
2802 | } | |
2803 | break; | |
2804 | case TYPE_CODE_METHOD: | |
2805 | switch (TYPE_CODE (arg)) | |
2806 | { | |
2807 | ||
2808 | default: | |
2809 | return INCOMPATIBLE_TYPE_BADNESS; | |
2810 | } | |
2811 | break; | |
2812 | case TYPE_CODE_REF: | |
2813 | switch (TYPE_CODE (arg)) | |
2814 | { | |
2815 | ||
2816 | default: | |
2817 | return INCOMPATIBLE_TYPE_BADNESS; | |
2818 | } | |
2819 | ||
2820 | break; | |
2821 | case TYPE_CODE_SET: | |
2822 | switch (TYPE_CODE (arg)) | |
2823 | { | |
2824 | /* Not in C++ */ | |
2825 | case TYPE_CODE_SET: | |
7ba81444 | 2826 | return rank_one_type (TYPE_FIELD_TYPE (parm, 0), |
da096638 | 2827 | TYPE_FIELD_TYPE (arg, 0), NULL); |
c5aa993b JM |
2828 | default: |
2829 | return INCOMPATIBLE_TYPE_BADNESS; | |
2830 | } | |
2831 | break; | |
2832 | case TYPE_CODE_VOID: | |
2833 | default: | |
2834 | return INCOMPATIBLE_TYPE_BADNESS; | |
2835 | } /* switch (TYPE_CODE (arg)) */ | |
c906108c SS |
2836 | } |
2837 | ||
0963b4bd | 2838 | /* End of functions for overload resolution. */ |
5212577a DE |
2839 | \f |
2840 | /* Routines to pretty-print types. */ | |
c906108c | 2841 | |
c906108c | 2842 | static void |
fba45db2 | 2843 | print_bit_vector (B_TYPE *bits, int nbits) |
c906108c SS |
2844 | { |
2845 | int bitno; | |
2846 | ||
2847 | for (bitno = 0; bitno < nbits; bitno++) | |
2848 | { | |
2849 | if ((bitno % 8) == 0) | |
2850 | { | |
2851 | puts_filtered (" "); | |
2852 | } | |
2853 | if (B_TST (bits, bitno)) | |
a3f17187 | 2854 | printf_filtered (("1")); |
c906108c | 2855 | else |
a3f17187 | 2856 | printf_filtered (("0")); |
c906108c SS |
2857 | } |
2858 | } | |
2859 | ||
ad2f7632 | 2860 | /* Note the first arg should be the "this" pointer, we may not want to |
7ba81444 MS |
2861 | include it since we may get into a infinitely recursive |
2862 | situation. */ | |
c906108c SS |
2863 | |
2864 | static void | |
ad2f7632 | 2865 | print_arg_types (struct field *args, int nargs, int spaces) |
c906108c SS |
2866 | { |
2867 | if (args != NULL) | |
2868 | { | |
ad2f7632 DJ |
2869 | int i; |
2870 | ||
2871 | for (i = 0; i < nargs; i++) | |
2872 | recursive_dump_type (args[i].type, spaces + 2); | |
c906108c SS |
2873 | } |
2874 | } | |
2875 | ||
d6a843b5 JK |
2876 | int |
2877 | field_is_static (struct field *f) | |
2878 | { | |
2879 | /* "static" fields are the fields whose location is not relative | |
2880 | to the address of the enclosing struct. It would be nice to | |
2881 | have a dedicated flag that would be set for static fields when | |
2882 | the type is being created. But in practice, checking the field | |
254e6b9e | 2883 | loc_kind should give us an accurate answer. */ |
d6a843b5 JK |
2884 | return (FIELD_LOC_KIND (*f) == FIELD_LOC_KIND_PHYSNAME |
2885 | || FIELD_LOC_KIND (*f) == FIELD_LOC_KIND_PHYSADDR); | |
2886 | } | |
2887 | ||
c906108c | 2888 | static void |
fba45db2 | 2889 | dump_fn_fieldlists (struct type *type, int spaces) |
c906108c SS |
2890 | { |
2891 | int method_idx; | |
2892 | int overload_idx; | |
2893 | struct fn_field *f; | |
2894 | ||
2895 | printfi_filtered (spaces, "fn_fieldlists "); | |
d4f3574e | 2896 | gdb_print_host_address (TYPE_FN_FIELDLISTS (type), gdb_stdout); |
c906108c SS |
2897 | printf_filtered ("\n"); |
2898 | for (method_idx = 0; method_idx < TYPE_NFN_FIELDS (type); method_idx++) | |
2899 | { | |
2900 | f = TYPE_FN_FIELDLIST1 (type, method_idx); | |
2901 | printfi_filtered (spaces + 2, "[%d] name '%s' (", | |
2902 | method_idx, | |
2903 | TYPE_FN_FIELDLIST_NAME (type, method_idx)); | |
d4f3574e SS |
2904 | gdb_print_host_address (TYPE_FN_FIELDLIST_NAME (type, method_idx), |
2905 | gdb_stdout); | |
a3f17187 | 2906 | printf_filtered (_(") length %d\n"), |
c906108c SS |
2907 | TYPE_FN_FIELDLIST_LENGTH (type, method_idx)); |
2908 | for (overload_idx = 0; | |
2909 | overload_idx < TYPE_FN_FIELDLIST_LENGTH (type, method_idx); | |
2910 | overload_idx++) | |
2911 | { | |
2912 | printfi_filtered (spaces + 4, "[%d] physname '%s' (", | |
2913 | overload_idx, | |
2914 | TYPE_FN_FIELD_PHYSNAME (f, overload_idx)); | |
d4f3574e SS |
2915 | gdb_print_host_address (TYPE_FN_FIELD_PHYSNAME (f, overload_idx), |
2916 | gdb_stdout); | |
c906108c SS |
2917 | printf_filtered (")\n"); |
2918 | printfi_filtered (spaces + 8, "type "); | |
7ba81444 MS |
2919 | gdb_print_host_address (TYPE_FN_FIELD_TYPE (f, overload_idx), |
2920 | gdb_stdout); | |
c906108c SS |
2921 | printf_filtered ("\n"); |
2922 | ||
2923 | recursive_dump_type (TYPE_FN_FIELD_TYPE (f, overload_idx), | |
2924 | spaces + 8 + 2); | |
2925 | ||
2926 | printfi_filtered (spaces + 8, "args "); | |
7ba81444 MS |
2927 | gdb_print_host_address (TYPE_FN_FIELD_ARGS (f, overload_idx), |
2928 | gdb_stdout); | |
c906108c SS |
2929 | printf_filtered ("\n"); |
2930 | ||
ad2f7632 | 2931 | print_arg_types (TYPE_FN_FIELD_ARGS (f, overload_idx), |
7ba81444 MS |
2932 | TYPE_NFIELDS (TYPE_FN_FIELD_TYPE (f, |
2933 | overload_idx)), | |
ad2f7632 | 2934 | spaces); |
c906108c | 2935 | printfi_filtered (spaces + 8, "fcontext "); |
d4f3574e SS |
2936 | gdb_print_host_address (TYPE_FN_FIELD_FCONTEXT (f, overload_idx), |
2937 | gdb_stdout); | |
c906108c SS |
2938 | printf_filtered ("\n"); |
2939 | ||
2940 | printfi_filtered (spaces + 8, "is_const %d\n", | |
2941 | TYPE_FN_FIELD_CONST (f, overload_idx)); | |
2942 | printfi_filtered (spaces + 8, "is_volatile %d\n", | |
2943 | TYPE_FN_FIELD_VOLATILE (f, overload_idx)); | |
2944 | printfi_filtered (spaces + 8, "is_private %d\n", | |
2945 | TYPE_FN_FIELD_PRIVATE (f, overload_idx)); | |
2946 | printfi_filtered (spaces + 8, "is_protected %d\n", | |
2947 | TYPE_FN_FIELD_PROTECTED (f, overload_idx)); | |
2948 | printfi_filtered (spaces + 8, "is_stub %d\n", | |
2949 | TYPE_FN_FIELD_STUB (f, overload_idx)); | |
2950 | printfi_filtered (spaces + 8, "voffset %u\n", | |
2951 | TYPE_FN_FIELD_VOFFSET (f, overload_idx)); | |
2952 | } | |
2953 | } | |
2954 | } | |
2955 | ||
2956 | static void | |
fba45db2 | 2957 | print_cplus_stuff (struct type *type, int spaces) |
c906108c SS |
2958 | { |
2959 | printfi_filtered (spaces, "n_baseclasses %d\n", | |
2960 | TYPE_N_BASECLASSES (type)); | |
2961 | printfi_filtered (spaces, "nfn_fields %d\n", | |
2962 | TYPE_NFN_FIELDS (type)); | |
c906108c SS |
2963 | if (TYPE_N_BASECLASSES (type) > 0) |
2964 | { | |
2965 | printfi_filtered (spaces, "virtual_field_bits (%d bits at *", | |
2966 | TYPE_N_BASECLASSES (type)); | |
7ba81444 MS |
2967 | gdb_print_host_address (TYPE_FIELD_VIRTUAL_BITS (type), |
2968 | gdb_stdout); | |
c906108c SS |
2969 | printf_filtered (")"); |
2970 | ||
2971 | print_bit_vector (TYPE_FIELD_VIRTUAL_BITS (type), | |
2972 | TYPE_N_BASECLASSES (type)); | |
2973 | puts_filtered ("\n"); | |
2974 | } | |
2975 | if (TYPE_NFIELDS (type) > 0) | |
2976 | { | |
2977 | if (TYPE_FIELD_PRIVATE_BITS (type) != NULL) | |
2978 | { | |
7ba81444 MS |
2979 | printfi_filtered (spaces, |
2980 | "private_field_bits (%d bits at *", | |
c906108c | 2981 | TYPE_NFIELDS (type)); |
7ba81444 MS |
2982 | gdb_print_host_address (TYPE_FIELD_PRIVATE_BITS (type), |
2983 | gdb_stdout); | |
c906108c SS |
2984 | printf_filtered (")"); |
2985 | print_bit_vector (TYPE_FIELD_PRIVATE_BITS (type), | |
2986 | TYPE_NFIELDS (type)); | |
2987 | puts_filtered ("\n"); | |
2988 | } | |
2989 | if (TYPE_FIELD_PROTECTED_BITS (type) != NULL) | |
2990 | { | |
7ba81444 MS |
2991 | printfi_filtered (spaces, |
2992 | "protected_field_bits (%d bits at *", | |
c906108c | 2993 | TYPE_NFIELDS (type)); |
7ba81444 MS |
2994 | gdb_print_host_address (TYPE_FIELD_PROTECTED_BITS (type), |
2995 | gdb_stdout); | |
c906108c SS |
2996 | printf_filtered (")"); |
2997 | print_bit_vector (TYPE_FIELD_PROTECTED_BITS (type), | |
2998 | TYPE_NFIELDS (type)); | |
2999 | puts_filtered ("\n"); | |
3000 | } | |
3001 | } | |
3002 | if (TYPE_NFN_FIELDS (type) > 0) | |
3003 | { | |
3004 | dump_fn_fieldlists (type, spaces); | |
3005 | } | |
3006 | } | |
3007 | ||
b4ba55a1 JB |
3008 | /* Print the contents of the TYPE's type_specific union, assuming that |
3009 | its type-specific kind is TYPE_SPECIFIC_GNAT_STUFF. */ | |
3010 | ||
3011 | static void | |
3012 | print_gnat_stuff (struct type *type, int spaces) | |
3013 | { | |
3014 | struct type *descriptive_type = TYPE_DESCRIPTIVE_TYPE (type); | |
3015 | ||
3016 | recursive_dump_type (descriptive_type, spaces + 2); | |
3017 | } | |
3018 | ||
c906108c SS |
3019 | static struct obstack dont_print_type_obstack; |
3020 | ||
3021 | void | |
fba45db2 | 3022 | recursive_dump_type (struct type *type, int spaces) |
c906108c SS |
3023 | { |
3024 | int idx; | |
3025 | ||
3026 | if (spaces == 0) | |
3027 | obstack_begin (&dont_print_type_obstack, 0); | |
3028 | ||
3029 | if (TYPE_NFIELDS (type) > 0 | |
b4ba55a1 | 3030 | || (HAVE_CPLUS_STRUCT (type) && TYPE_NFN_FIELDS (type) > 0)) |
c906108c SS |
3031 | { |
3032 | struct type **first_dont_print | |
7ba81444 | 3033 | = (struct type **) obstack_base (&dont_print_type_obstack); |
c906108c | 3034 | |
7ba81444 MS |
3035 | int i = (struct type **) |
3036 | obstack_next_free (&dont_print_type_obstack) - first_dont_print; | |
c906108c SS |
3037 | |
3038 | while (--i >= 0) | |
3039 | { | |
3040 | if (type == first_dont_print[i]) | |
3041 | { | |
3042 | printfi_filtered (spaces, "type node "); | |
d4f3574e | 3043 | gdb_print_host_address (type, gdb_stdout); |
a3f17187 | 3044 | printf_filtered (_(" <same as already seen type>\n")); |
c906108c SS |
3045 | return; |
3046 | } | |
3047 | } | |
3048 | ||
3049 | obstack_ptr_grow (&dont_print_type_obstack, type); | |
3050 | } | |
3051 | ||
3052 | printfi_filtered (spaces, "type node "); | |
d4f3574e | 3053 | gdb_print_host_address (type, gdb_stdout); |
c906108c SS |
3054 | printf_filtered ("\n"); |
3055 | printfi_filtered (spaces, "name '%s' (", | |
3056 | TYPE_NAME (type) ? TYPE_NAME (type) : "<NULL>"); | |
d4f3574e | 3057 | gdb_print_host_address (TYPE_NAME (type), gdb_stdout); |
c906108c | 3058 | printf_filtered (")\n"); |
e9e79dd9 FF |
3059 | printfi_filtered (spaces, "tagname '%s' (", |
3060 | TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : "<NULL>"); | |
3061 | gdb_print_host_address (TYPE_TAG_NAME (type), gdb_stdout); | |
3062 | printf_filtered (")\n"); | |
c906108c SS |
3063 | printfi_filtered (spaces, "code 0x%x ", TYPE_CODE (type)); |
3064 | switch (TYPE_CODE (type)) | |
3065 | { | |
c5aa993b JM |
3066 | case TYPE_CODE_UNDEF: |
3067 | printf_filtered ("(TYPE_CODE_UNDEF)"); | |
3068 | break; | |
3069 | case TYPE_CODE_PTR: | |
3070 | printf_filtered ("(TYPE_CODE_PTR)"); | |
3071 | break; | |
3072 | case TYPE_CODE_ARRAY: | |
3073 | printf_filtered ("(TYPE_CODE_ARRAY)"); | |
3074 | break; | |
3075 | case TYPE_CODE_STRUCT: | |
3076 | printf_filtered ("(TYPE_CODE_STRUCT)"); | |
3077 | break; | |
3078 | case TYPE_CODE_UNION: | |
3079 | printf_filtered ("(TYPE_CODE_UNION)"); | |
3080 | break; | |
3081 | case TYPE_CODE_ENUM: | |
3082 | printf_filtered ("(TYPE_CODE_ENUM)"); | |
3083 | break; | |
4f2aea11 MK |
3084 | case TYPE_CODE_FLAGS: |
3085 | printf_filtered ("(TYPE_CODE_FLAGS)"); | |
3086 | break; | |
c5aa993b JM |
3087 | case TYPE_CODE_FUNC: |
3088 | printf_filtered ("(TYPE_CODE_FUNC)"); | |
3089 | break; | |
3090 | case TYPE_CODE_INT: | |
3091 | printf_filtered ("(TYPE_CODE_INT)"); | |
3092 | break; | |
3093 | case TYPE_CODE_FLT: | |
3094 | printf_filtered ("(TYPE_CODE_FLT)"); | |
3095 | break; | |
3096 | case TYPE_CODE_VOID: | |
3097 | printf_filtered ("(TYPE_CODE_VOID)"); | |
3098 | break; | |
3099 | case TYPE_CODE_SET: | |
3100 | printf_filtered ("(TYPE_CODE_SET)"); | |
3101 | break; | |
3102 | case TYPE_CODE_RANGE: | |
3103 | printf_filtered ("(TYPE_CODE_RANGE)"); | |
3104 | break; | |
3105 | case TYPE_CODE_STRING: | |
3106 | printf_filtered ("(TYPE_CODE_STRING)"); | |
3107 | break; | |
3108 | case TYPE_CODE_ERROR: | |
3109 | printf_filtered ("(TYPE_CODE_ERROR)"); | |
3110 | break; | |
0d5de010 DJ |
3111 | case TYPE_CODE_MEMBERPTR: |
3112 | printf_filtered ("(TYPE_CODE_MEMBERPTR)"); | |
3113 | break; | |
3114 | case TYPE_CODE_METHODPTR: | |
3115 | printf_filtered ("(TYPE_CODE_METHODPTR)"); | |
c5aa993b JM |
3116 | break; |
3117 | case TYPE_CODE_METHOD: | |
3118 | printf_filtered ("(TYPE_CODE_METHOD)"); | |
3119 | break; | |
3120 | case TYPE_CODE_REF: | |
3121 | printf_filtered ("(TYPE_CODE_REF)"); | |
3122 | break; | |
3123 | case TYPE_CODE_CHAR: | |
3124 | printf_filtered ("(TYPE_CODE_CHAR)"); | |
3125 | break; | |
3126 | case TYPE_CODE_BOOL: | |
3127 | printf_filtered ("(TYPE_CODE_BOOL)"); | |
3128 | break; | |
e9e79dd9 FF |
3129 | case TYPE_CODE_COMPLEX: |
3130 | printf_filtered ("(TYPE_CODE_COMPLEX)"); | |
3131 | break; | |
c5aa993b JM |
3132 | case TYPE_CODE_TYPEDEF: |
3133 | printf_filtered ("(TYPE_CODE_TYPEDEF)"); | |
3134 | break; | |
5c4e30ca DC |
3135 | case TYPE_CODE_NAMESPACE: |
3136 | printf_filtered ("(TYPE_CODE_NAMESPACE)"); | |
3137 | break; | |
c5aa993b JM |
3138 | default: |
3139 | printf_filtered ("(UNKNOWN TYPE CODE)"); | |
3140 | break; | |
c906108c SS |
3141 | } |
3142 | puts_filtered ("\n"); | |
3143 | printfi_filtered (spaces, "length %d\n", TYPE_LENGTH (type)); | |
e9bb382b UW |
3144 | if (TYPE_OBJFILE_OWNED (type)) |
3145 | { | |
3146 | printfi_filtered (spaces, "objfile "); | |
3147 | gdb_print_host_address (TYPE_OWNER (type).objfile, gdb_stdout); | |
3148 | } | |
3149 | else | |
3150 | { | |
3151 | printfi_filtered (spaces, "gdbarch "); | |
3152 | gdb_print_host_address (TYPE_OWNER (type).gdbarch, gdb_stdout); | |
3153 | } | |
c906108c SS |
3154 | printf_filtered ("\n"); |
3155 | printfi_filtered (spaces, "target_type "); | |
d4f3574e | 3156 | gdb_print_host_address (TYPE_TARGET_TYPE (type), gdb_stdout); |
c906108c SS |
3157 | printf_filtered ("\n"); |
3158 | if (TYPE_TARGET_TYPE (type) != NULL) | |
3159 | { | |
3160 | recursive_dump_type (TYPE_TARGET_TYPE (type), spaces + 2); | |
3161 | } | |
3162 | printfi_filtered (spaces, "pointer_type "); | |
d4f3574e | 3163 | gdb_print_host_address (TYPE_POINTER_TYPE (type), gdb_stdout); |
c906108c SS |
3164 | printf_filtered ("\n"); |
3165 | printfi_filtered (spaces, "reference_type "); | |
d4f3574e | 3166 | gdb_print_host_address (TYPE_REFERENCE_TYPE (type), gdb_stdout); |
c906108c | 3167 | printf_filtered ("\n"); |
2fdde8f8 DJ |
3168 | printfi_filtered (spaces, "type_chain "); |
3169 | gdb_print_host_address (TYPE_CHAIN (type), gdb_stdout); | |
e9e79dd9 | 3170 | printf_filtered ("\n"); |
7ba81444 MS |
3171 | printfi_filtered (spaces, "instance_flags 0x%x", |
3172 | TYPE_INSTANCE_FLAGS (type)); | |
2fdde8f8 DJ |
3173 | if (TYPE_CONST (type)) |
3174 | { | |
3175 | puts_filtered (" TYPE_FLAG_CONST"); | |
3176 | } | |
3177 | if (TYPE_VOLATILE (type)) | |
3178 | { | |
3179 | puts_filtered (" TYPE_FLAG_VOLATILE"); | |
3180 | } | |
3181 | if (TYPE_CODE_SPACE (type)) | |
3182 | { | |
3183 | puts_filtered (" TYPE_FLAG_CODE_SPACE"); | |
3184 | } | |
3185 | if (TYPE_DATA_SPACE (type)) | |
3186 | { | |
3187 | puts_filtered (" TYPE_FLAG_DATA_SPACE"); | |
3188 | } | |
8b2dbe47 KB |
3189 | if (TYPE_ADDRESS_CLASS_1 (type)) |
3190 | { | |
3191 | puts_filtered (" TYPE_FLAG_ADDRESS_CLASS_1"); | |
3192 | } | |
3193 | if (TYPE_ADDRESS_CLASS_2 (type)) | |
3194 | { | |
3195 | puts_filtered (" TYPE_FLAG_ADDRESS_CLASS_2"); | |
3196 | } | |
2fdde8f8 | 3197 | puts_filtered ("\n"); |
876cecd0 TT |
3198 | |
3199 | printfi_filtered (spaces, "flags"); | |
762a036f | 3200 | if (TYPE_UNSIGNED (type)) |
c906108c SS |
3201 | { |
3202 | puts_filtered (" TYPE_FLAG_UNSIGNED"); | |
3203 | } | |
762a036f FF |
3204 | if (TYPE_NOSIGN (type)) |
3205 | { | |
3206 | puts_filtered (" TYPE_FLAG_NOSIGN"); | |
3207 | } | |
3208 | if (TYPE_STUB (type)) | |
c906108c SS |
3209 | { |
3210 | puts_filtered (" TYPE_FLAG_STUB"); | |
3211 | } | |
762a036f FF |
3212 | if (TYPE_TARGET_STUB (type)) |
3213 | { | |
3214 | puts_filtered (" TYPE_FLAG_TARGET_STUB"); | |
3215 | } | |
3216 | if (TYPE_STATIC (type)) | |
3217 | { | |
3218 | puts_filtered (" TYPE_FLAG_STATIC"); | |
3219 | } | |
762a036f FF |
3220 | if (TYPE_PROTOTYPED (type)) |
3221 | { | |
3222 | puts_filtered (" TYPE_FLAG_PROTOTYPED"); | |
3223 | } | |
3224 | if (TYPE_INCOMPLETE (type)) | |
3225 | { | |
3226 | puts_filtered (" TYPE_FLAG_INCOMPLETE"); | |
3227 | } | |
762a036f FF |
3228 | if (TYPE_VARARGS (type)) |
3229 | { | |
3230 | puts_filtered (" TYPE_FLAG_VARARGS"); | |
3231 | } | |
f5f8a009 EZ |
3232 | /* This is used for things like AltiVec registers on ppc. Gcc emits |
3233 | an attribute for the array type, which tells whether or not we | |
3234 | have a vector, instead of a regular array. */ | |
3235 | if (TYPE_VECTOR (type)) | |
3236 | { | |
3237 | puts_filtered (" TYPE_FLAG_VECTOR"); | |
3238 | } | |
876cecd0 TT |
3239 | if (TYPE_FIXED_INSTANCE (type)) |
3240 | { | |
3241 | puts_filtered (" TYPE_FIXED_INSTANCE"); | |
3242 | } | |
3243 | if (TYPE_STUB_SUPPORTED (type)) | |
3244 | { | |
3245 | puts_filtered (" TYPE_STUB_SUPPORTED"); | |
3246 | } | |
3247 | if (TYPE_NOTTEXT (type)) | |
3248 | { | |
3249 | puts_filtered (" TYPE_NOTTEXT"); | |
3250 | } | |
c906108c SS |
3251 | puts_filtered ("\n"); |
3252 | printfi_filtered (spaces, "nfields %d ", TYPE_NFIELDS (type)); | |
d4f3574e | 3253 | gdb_print_host_address (TYPE_FIELDS (type), gdb_stdout); |
c906108c SS |
3254 | puts_filtered ("\n"); |
3255 | for (idx = 0; idx < TYPE_NFIELDS (type); idx++) | |
3256 | { | |
14e75d8e JK |
3257 | if (TYPE_CODE (type) == TYPE_CODE_ENUM) |
3258 | printfi_filtered (spaces + 2, | |
3259 | "[%d] enumval %s type ", | |
3260 | idx, plongest (TYPE_FIELD_ENUMVAL (type, idx))); | |
3261 | else | |
3262 | printfi_filtered (spaces + 2, | |
3263 | "[%d] bitpos %d bitsize %d type ", | |
3264 | idx, TYPE_FIELD_BITPOS (type, idx), | |
3265 | TYPE_FIELD_BITSIZE (type, idx)); | |
d4f3574e | 3266 | gdb_print_host_address (TYPE_FIELD_TYPE (type, idx), gdb_stdout); |
c906108c SS |
3267 | printf_filtered (" name '%s' (", |
3268 | TYPE_FIELD_NAME (type, idx) != NULL | |
3269 | ? TYPE_FIELD_NAME (type, idx) | |
3270 | : "<NULL>"); | |
d4f3574e | 3271 | gdb_print_host_address (TYPE_FIELD_NAME (type, idx), gdb_stdout); |
c906108c SS |
3272 | printf_filtered (")\n"); |
3273 | if (TYPE_FIELD_TYPE (type, idx) != NULL) | |
3274 | { | |
3275 | recursive_dump_type (TYPE_FIELD_TYPE (type, idx), spaces + 4); | |
3276 | } | |
3277 | } | |
43bbcdc2 PH |
3278 | if (TYPE_CODE (type) == TYPE_CODE_RANGE) |
3279 | { | |
3280 | printfi_filtered (spaces, "low %s%s high %s%s\n", | |
3281 | plongest (TYPE_LOW_BOUND (type)), | |
3282 | TYPE_LOW_BOUND_UNDEFINED (type) ? " (undefined)" : "", | |
3283 | plongest (TYPE_HIGH_BOUND (type)), | |
3e43a32a MS |
3284 | TYPE_HIGH_BOUND_UNDEFINED (type) |
3285 | ? " (undefined)" : ""); | |
43bbcdc2 | 3286 | } |
c906108c | 3287 | printfi_filtered (spaces, "vptr_basetype "); |
d4f3574e | 3288 | gdb_print_host_address (TYPE_VPTR_BASETYPE (type), gdb_stdout); |
c906108c SS |
3289 | puts_filtered ("\n"); |
3290 | if (TYPE_VPTR_BASETYPE (type) != NULL) | |
3291 | { | |
3292 | recursive_dump_type (TYPE_VPTR_BASETYPE (type), spaces + 2); | |
3293 | } | |
7ba81444 MS |
3294 | printfi_filtered (spaces, "vptr_fieldno %d\n", |
3295 | TYPE_VPTR_FIELDNO (type)); | |
c906108c | 3296 | |
b4ba55a1 JB |
3297 | switch (TYPE_SPECIFIC_FIELD (type)) |
3298 | { | |
3299 | case TYPE_SPECIFIC_CPLUS_STUFF: | |
3300 | printfi_filtered (spaces, "cplus_stuff "); | |
3301 | gdb_print_host_address (TYPE_CPLUS_SPECIFIC (type), | |
3302 | gdb_stdout); | |
3303 | puts_filtered ("\n"); | |
3304 | print_cplus_stuff (type, spaces); | |
3305 | break; | |
8da61cc4 | 3306 | |
b4ba55a1 JB |
3307 | case TYPE_SPECIFIC_GNAT_STUFF: |
3308 | printfi_filtered (spaces, "gnat_stuff "); | |
3309 | gdb_print_host_address (TYPE_GNAT_SPECIFIC (type), gdb_stdout); | |
3310 | puts_filtered ("\n"); | |
3311 | print_gnat_stuff (type, spaces); | |
3312 | break; | |
701c159d | 3313 | |
b4ba55a1 JB |
3314 | case TYPE_SPECIFIC_FLOATFORMAT: |
3315 | printfi_filtered (spaces, "floatformat "); | |
3316 | if (TYPE_FLOATFORMAT (type) == NULL) | |
3317 | puts_filtered ("(null)"); | |
3318 | else | |
3319 | { | |
3320 | puts_filtered ("{ "); | |
3321 | if (TYPE_FLOATFORMAT (type)[0] == NULL | |
3322 | || TYPE_FLOATFORMAT (type)[0]->name == NULL) | |
3323 | puts_filtered ("(null)"); | |
3324 | else | |
3325 | puts_filtered (TYPE_FLOATFORMAT (type)[0]->name); | |
3326 | ||
3327 | puts_filtered (", "); | |
3328 | if (TYPE_FLOATFORMAT (type)[1] == NULL | |
3329 | || TYPE_FLOATFORMAT (type)[1]->name == NULL) | |
3330 | puts_filtered ("(null)"); | |
3331 | else | |
3332 | puts_filtered (TYPE_FLOATFORMAT (type)[1]->name); | |
3333 | ||
3334 | puts_filtered (" }"); | |
3335 | } | |
3336 | puts_filtered ("\n"); | |
3337 | break; | |
c906108c | 3338 | |
b6cdc2c1 | 3339 | case TYPE_SPECIFIC_FUNC: |
b4ba55a1 JB |
3340 | printfi_filtered (spaces, "calling_convention %d\n", |
3341 | TYPE_CALLING_CONVENTION (type)); | |
b6cdc2c1 | 3342 | /* tail_call_list is not printed. */ |
b4ba55a1 | 3343 | break; |
c906108c | 3344 | } |
b4ba55a1 | 3345 | |
c906108c SS |
3346 | if (spaces == 0) |
3347 | obstack_free (&dont_print_type_obstack, NULL); | |
3348 | } | |
5212577a | 3349 | \f |
ae5a43e0 DJ |
3350 | /* Trivial helpers for the libiberty hash table, for mapping one |
3351 | type to another. */ | |
3352 | ||
3353 | struct type_pair | |
3354 | { | |
3355 | struct type *old, *new; | |
3356 | }; | |
3357 | ||
3358 | static hashval_t | |
3359 | type_pair_hash (const void *item) | |
3360 | { | |
3361 | const struct type_pair *pair = item; | |
d8734c88 | 3362 | |
ae5a43e0 DJ |
3363 | return htab_hash_pointer (pair->old); |
3364 | } | |
3365 | ||
3366 | static int | |
3367 | type_pair_eq (const void *item_lhs, const void *item_rhs) | |
3368 | { | |
3369 | const struct type_pair *lhs = item_lhs, *rhs = item_rhs; | |
d8734c88 | 3370 | |
ae5a43e0 DJ |
3371 | return lhs->old == rhs->old; |
3372 | } | |
3373 | ||
3374 | /* Allocate the hash table used by copy_type_recursive to walk | |
3375 | types without duplicates. We use OBJFILE's obstack, because | |
3376 | OBJFILE is about to be deleted. */ | |
3377 | ||
3378 | htab_t | |
3379 | create_copied_types_hash (struct objfile *objfile) | |
3380 | { | |
3381 | return htab_create_alloc_ex (1, type_pair_hash, type_pair_eq, | |
3382 | NULL, &objfile->objfile_obstack, | |
3383 | hashtab_obstack_allocate, | |
3384 | dummy_obstack_deallocate); | |
3385 | } | |
3386 | ||
7ba81444 MS |
3387 | /* Recursively copy (deep copy) TYPE, if it is associated with |
3388 | OBJFILE. Return a new type allocated using malloc, a saved type if | |
3389 | we have already visited TYPE (using COPIED_TYPES), or TYPE if it is | |
3390 | not associated with OBJFILE. */ | |
ae5a43e0 DJ |
3391 | |
3392 | struct type * | |
7ba81444 MS |
3393 | copy_type_recursive (struct objfile *objfile, |
3394 | struct type *type, | |
ae5a43e0 DJ |
3395 | htab_t copied_types) |
3396 | { | |
3397 | struct type_pair *stored, pair; | |
3398 | void **slot; | |
3399 | struct type *new_type; | |
3400 | ||
e9bb382b | 3401 | if (! TYPE_OBJFILE_OWNED (type)) |
ae5a43e0 DJ |
3402 | return type; |
3403 | ||
7ba81444 MS |
3404 | /* This type shouldn't be pointing to any types in other objfiles; |
3405 | if it did, the type might disappear unexpectedly. */ | |
ae5a43e0 DJ |
3406 | gdb_assert (TYPE_OBJFILE (type) == objfile); |
3407 | ||
3408 | pair.old = type; | |
3409 | slot = htab_find_slot (copied_types, &pair, INSERT); | |
3410 | if (*slot != NULL) | |
3411 | return ((struct type_pair *) *slot)->new; | |
3412 | ||
e9bb382b | 3413 | new_type = alloc_type_arch (get_type_arch (type)); |
ae5a43e0 DJ |
3414 | |
3415 | /* We must add the new type to the hash table immediately, in case | |
3416 | we encounter this type again during a recursive call below. */ | |
3e43a32a MS |
3417 | stored |
3418 | = obstack_alloc (&objfile->objfile_obstack, sizeof (struct type_pair)); | |
ae5a43e0 DJ |
3419 | stored->old = type; |
3420 | stored->new = new_type; | |
3421 | *slot = stored; | |
3422 | ||
876cecd0 TT |
3423 | /* Copy the common fields of types. For the main type, we simply |
3424 | copy the entire thing and then update specific fields as needed. */ | |
3425 | *TYPE_MAIN_TYPE (new_type) = *TYPE_MAIN_TYPE (type); | |
e9bb382b UW |
3426 | TYPE_OBJFILE_OWNED (new_type) = 0; |
3427 | TYPE_OWNER (new_type).gdbarch = get_type_arch (type); | |
876cecd0 | 3428 | |
ae5a43e0 DJ |
3429 | if (TYPE_NAME (type)) |
3430 | TYPE_NAME (new_type) = xstrdup (TYPE_NAME (type)); | |
3431 | if (TYPE_TAG_NAME (type)) | |
3432 | TYPE_TAG_NAME (new_type) = xstrdup (TYPE_TAG_NAME (type)); | |
ae5a43e0 DJ |
3433 | |
3434 | TYPE_INSTANCE_FLAGS (new_type) = TYPE_INSTANCE_FLAGS (type); | |
3435 | TYPE_LENGTH (new_type) = TYPE_LENGTH (type); | |
3436 | ||
3437 | /* Copy the fields. */ | |
ae5a43e0 DJ |
3438 | if (TYPE_NFIELDS (type)) |
3439 | { | |
3440 | int i, nfields; | |
3441 | ||
3442 | nfields = TYPE_NFIELDS (type); | |
1deafd4e | 3443 | TYPE_FIELDS (new_type) = XCALLOC (nfields, struct field); |
ae5a43e0 DJ |
3444 | for (i = 0; i < nfields; i++) |
3445 | { | |
7ba81444 MS |
3446 | TYPE_FIELD_ARTIFICIAL (new_type, i) = |
3447 | TYPE_FIELD_ARTIFICIAL (type, i); | |
ae5a43e0 DJ |
3448 | TYPE_FIELD_BITSIZE (new_type, i) = TYPE_FIELD_BITSIZE (type, i); |
3449 | if (TYPE_FIELD_TYPE (type, i)) | |
3450 | TYPE_FIELD_TYPE (new_type, i) | |
3451 | = copy_type_recursive (objfile, TYPE_FIELD_TYPE (type, i), | |
3452 | copied_types); | |
3453 | if (TYPE_FIELD_NAME (type, i)) | |
7ba81444 MS |
3454 | TYPE_FIELD_NAME (new_type, i) = |
3455 | xstrdup (TYPE_FIELD_NAME (type, i)); | |
d6a843b5 | 3456 | switch (TYPE_FIELD_LOC_KIND (type, i)) |
ae5a43e0 | 3457 | { |
d6a843b5 JK |
3458 | case FIELD_LOC_KIND_BITPOS: |
3459 | SET_FIELD_BITPOS (TYPE_FIELD (new_type, i), | |
3460 | TYPE_FIELD_BITPOS (type, i)); | |
3461 | break; | |
14e75d8e JK |
3462 | case FIELD_LOC_KIND_ENUMVAL: |
3463 | SET_FIELD_ENUMVAL (TYPE_FIELD (new_type, i), | |
3464 | TYPE_FIELD_ENUMVAL (type, i)); | |
3465 | break; | |
d6a843b5 JK |
3466 | case FIELD_LOC_KIND_PHYSADDR: |
3467 | SET_FIELD_PHYSADDR (TYPE_FIELD (new_type, i), | |
3468 | TYPE_FIELD_STATIC_PHYSADDR (type, i)); | |
3469 | break; | |
3470 | case FIELD_LOC_KIND_PHYSNAME: | |
3471 | SET_FIELD_PHYSNAME (TYPE_FIELD (new_type, i), | |
3472 | xstrdup (TYPE_FIELD_STATIC_PHYSNAME (type, | |
3473 | i))); | |
3474 | break; | |
3475 | default: | |
3476 | internal_error (__FILE__, __LINE__, | |
3477 | _("Unexpected type field location kind: %d"), | |
3478 | TYPE_FIELD_LOC_KIND (type, i)); | |
ae5a43e0 DJ |
3479 | } |
3480 | } | |
3481 | } | |
3482 | ||
0963b4bd | 3483 | /* For range types, copy the bounds information. */ |
43bbcdc2 PH |
3484 | if (TYPE_CODE (type) == TYPE_CODE_RANGE) |
3485 | { | |
3486 | TYPE_RANGE_DATA (new_type) = xmalloc (sizeof (struct range_bounds)); | |
3487 | *TYPE_RANGE_DATA (new_type) = *TYPE_RANGE_DATA (type); | |
3488 | } | |
3489 | ||
ae5a43e0 DJ |
3490 | /* Copy pointers to other types. */ |
3491 | if (TYPE_TARGET_TYPE (type)) | |
7ba81444 MS |
3492 | TYPE_TARGET_TYPE (new_type) = |
3493 | copy_type_recursive (objfile, | |
3494 | TYPE_TARGET_TYPE (type), | |
3495 | copied_types); | |
ae5a43e0 | 3496 | if (TYPE_VPTR_BASETYPE (type)) |
7ba81444 MS |
3497 | TYPE_VPTR_BASETYPE (new_type) = |
3498 | copy_type_recursive (objfile, | |
3499 | TYPE_VPTR_BASETYPE (type), | |
3500 | copied_types); | |
ae5a43e0 DJ |
3501 | /* Maybe copy the type_specific bits. |
3502 | ||
3503 | NOTE drow/2005-12-09: We do not copy the C++-specific bits like | |
3504 | base classes and methods. There's no fundamental reason why we | |
3505 | can't, but at the moment it is not needed. */ | |
3506 | ||
3507 | if (TYPE_CODE (type) == TYPE_CODE_FLT) | |
d5d6fca5 | 3508 | TYPE_FLOATFORMAT (new_type) = TYPE_FLOATFORMAT (type); |
ae5a43e0 DJ |
3509 | else if (TYPE_CODE (type) == TYPE_CODE_STRUCT |
3510 | || TYPE_CODE (type) == TYPE_CODE_UNION | |
ae5a43e0 DJ |
3511 | || TYPE_CODE (type) == TYPE_CODE_NAMESPACE) |
3512 | INIT_CPLUS_SPECIFIC (new_type); | |
3513 | ||
3514 | return new_type; | |
3515 | } | |
3516 | ||
4af88198 JB |
3517 | /* Make a copy of the given TYPE, except that the pointer & reference |
3518 | types are not preserved. | |
3519 | ||
3520 | This function assumes that the given type has an associated objfile. | |
3521 | This objfile is used to allocate the new type. */ | |
3522 | ||
3523 | struct type * | |
3524 | copy_type (const struct type *type) | |
3525 | { | |
3526 | struct type *new_type; | |
3527 | ||
e9bb382b | 3528 | gdb_assert (TYPE_OBJFILE_OWNED (type)); |
4af88198 | 3529 | |
e9bb382b | 3530 | new_type = alloc_type_copy (type); |
4af88198 JB |
3531 | TYPE_INSTANCE_FLAGS (new_type) = TYPE_INSTANCE_FLAGS (type); |
3532 | TYPE_LENGTH (new_type) = TYPE_LENGTH (type); | |
3533 | memcpy (TYPE_MAIN_TYPE (new_type), TYPE_MAIN_TYPE (type), | |
3534 | sizeof (struct main_type)); | |
3535 | ||
3536 | return new_type; | |
3537 | } | |
5212577a | 3538 | \f |
e9bb382b UW |
3539 | /* Helper functions to initialize architecture-specific types. */ |
3540 | ||
3541 | /* Allocate a type structure associated with GDBARCH and set its | |
3542 | CODE, LENGTH, and NAME fields. */ | |
5212577a | 3543 | |
e9bb382b UW |
3544 | struct type * |
3545 | arch_type (struct gdbarch *gdbarch, | |
3546 | enum type_code code, int length, char *name) | |
3547 | { | |
3548 | struct type *type; | |
3549 | ||
3550 | type = alloc_type_arch (gdbarch); | |
3551 | TYPE_CODE (type) = code; | |
3552 | TYPE_LENGTH (type) = length; | |
3553 | ||
3554 | if (name) | |
3555 | TYPE_NAME (type) = xstrdup (name); | |
3556 | ||
3557 | return type; | |
3558 | } | |
3559 | ||
3560 | /* Allocate a TYPE_CODE_INT type structure associated with GDBARCH. | |
3561 | BIT is the type size in bits. If UNSIGNED_P is non-zero, set | |
3562 | the type's TYPE_UNSIGNED flag. NAME is the type name. */ | |
5212577a | 3563 | |
e9bb382b UW |
3564 | struct type * |
3565 | arch_integer_type (struct gdbarch *gdbarch, | |
3566 | int bit, int unsigned_p, char *name) | |
3567 | { | |
3568 | struct type *t; | |
3569 | ||
3570 | t = arch_type (gdbarch, TYPE_CODE_INT, bit / TARGET_CHAR_BIT, name); | |
3571 | if (unsigned_p) | |
3572 | TYPE_UNSIGNED (t) = 1; | |
3573 | if (name && strcmp (name, "char") == 0) | |
3574 | TYPE_NOSIGN (t) = 1; | |
3575 | ||
3576 | return t; | |
3577 | } | |
3578 | ||
3579 | /* Allocate a TYPE_CODE_CHAR type structure associated with GDBARCH. | |
3580 | BIT is the type size in bits. If UNSIGNED_P is non-zero, set | |
3581 | the type's TYPE_UNSIGNED flag. NAME is the type name. */ | |
5212577a | 3582 | |
e9bb382b UW |
3583 | struct type * |
3584 | arch_character_type (struct gdbarch *gdbarch, | |
3585 | int bit, int unsigned_p, char *name) | |
3586 | { | |
3587 | struct type *t; | |
3588 | ||
3589 | t = arch_type (gdbarch, TYPE_CODE_CHAR, bit / TARGET_CHAR_BIT, name); | |
3590 | if (unsigned_p) | |
3591 | TYPE_UNSIGNED (t) = 1; | |
3592 | ||
3593 | return t; | |
3594 | } | |
3595 | ||
3596 | /* Allocate a TYPE_CODE_BOOL type structure associated with GDBARCH. | |
3597 | BIT is the type size in bits. If UNSIGNED_P is non-zero, set | |
3598 | the type's TYPE_UNSIGNED flag. NAME is the type name. */ | |
5212577a | 3599 | |
e9bb382b UW |
3600 | struct type * |
3601 | arch_boolean_type (struct gdbarch *gdbarch, | |
3602 | int bit, int unsigned_p, char *name) | |
3603 | { | |
3604 | struct type *t; | |
3605 | ||
3606 | t = arch_type (gdbarch, TYPE_CODE_BOOL, bit / TARGET_CHAR_BIT, name); | |
3607 | if (unsigned_p) | |
3608 | TYPE_UNSIGNED (t) = 1; | |
3609 | ||
3610 | return t; | |
3611 | } | |
3612 | ||
3613 | /* Allocate a TYPE_CODE_FLT type structure associated with GDBARCH. | |
3614 | BIT is the type size in bits; if BIT equals -1, the size is | |
3615 | determined by the floatformat. NAME is the type name. Set the | |
3616 | TYPE_FLOATFORMAT from FLOATFORMATS. */ | |
5212577a | 3617 | |
27067745 | 3618 | struct type * |
e9bb382b UW |
3619 | arch_float_type (struct gdbarch *gdbarch, |
3620 | int bit, char *name, const struct floatformat **floatformats) | |
8da61cc4 DJ |
3621 | { |
3622 | struct type *t; | |
3623 | ||
3624 | if (bit == -1) | |
3625 | { | |
3626 | gdb_assert (floatformats != NULL); | |
3627 | gdb_assert (floatformats[0] != NULL && floatformats[1] != NULL); | |
3628 | bit = floatformats[0]->totalsize; | |
3629 | } | |
3630 | gdb_assert (bit >= 0); | |
3631 | ||
e9bb382b | 3632 | t = arch_type (gdbarch, TYPE_CODE_FLT, bit / TARGET_CHAR_BIT, name); |
8da61cc4 DJ |
3633 | TYPE_FLOATFORMAT (t) = floatformats; |
3634 | return t; | |
3635 | } | |
3636 | ||
e9bb382b UW |
3637 | /* Allocate a TYPE_CODE_COMPLEX type structure associated with GDBARCH. |
3638 | NAME is the type name. TARGET_TYPE is the component float type. */ | |
5212577a | 3639 | |
27067745 | 3640 | struct type * |
e9bb382b UW |
3641 | arch_complex_type (struct gdbarch *gdbarch, |
3642 | char *name, struct type *target_type) | |
27067745 UW |
3643 | { |
3644 | struct type *t; | |
d8734c88 | 3645 | |
e9bb382b UW |
3646 | t = arch_type (gdbarch, TYPE_CODE_COMPLEX, |
3647 | 2 * TYPE_LENGTH (target_type), name); | |
27067745 UW |
3648 | TYPE_TARGET_TYPE (t) = target_type; |
3649 | return t; | |
3650 | } | |
3651 | ||
e9bb382b | 3652 | /* Allocate a TYPE_CODE_FLAGS type structure associated with GDBARCH. |
eb90ce83 | 3653 | NAME is the type name. LENGTH is the size of the flag word in bytes. */ |
5212577a | 3654 | |
e9bb382b UW |
3655 | struct type * |
3656 | arch_flags_type (struct gdbarch *gdbarch, char *name, int length) | |
3657 | { | |
3658 | int nfields = length * TARGET_CHAR_BIT; | |
3659 | struct type *type; | |
3660 | ||
3661 | type = arch_type (gdbarch, TYPE_CODE_FLAGS, length, name); | |
3662 | TYPE_UNSIGNED (type) = 1; | |
3663 | TYPE_NFIELDS (type) = nfields; | |
3664 | TYPE_FIELDS (type) = TYPE_ZALLOC (type, nfields * sizeof (struct field)); | |
3665 | ||
3666 | return type; | |
3667 | } | |
3668 | ||
3669 | /* Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at | |
3670 | position BITPOS is called NAME. */ | |
5212577a | 3671 | |
e9bb382b UW |
3672 | void |
3673 | append_flags_type_flag (struct type *type, int bitpos, char *name) | |
3674 | { | |
3675 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_FLAGS); | |
3676 | gdb_assert (bitpos < TYPE_NFIELDS (type)); | |
3677 | gdb_assert (bitpos >= 0); | |
3678 | ||
3679 | if (name) | |
3680 | { | |
3681 | TYPE_FIELD_NAME (type, bitpos) = xstrdup (name); | |
945b3a32 | 3682 | SET_FIELD_BITPOS (TYPE_FIELD (type, bitpos), bitpos); |
e9bb382b UW |
3683 | } |
3684 | else | |
3685 | { | |
3686 | /* Don't show this field to the user. */ | |
945b3a32 | 3687 | SET_FIELD_BITPOS (TYPE_FIELD (type, bitpos), -1); |
e9bb382b UW |
3688 | } |
3689 | } | |
3690 | ||
3691 | /* Allocate a TYPE_CODE_STRUCT or TYPE_CODE_UNION type structure (as | |
3692 | specified by CODE) associated with GDBARCH. NAME is the type name. */ | |
5212577a | 3693 | |
e9bb382b UW |
3694 | struct type * |
3695 | arch_composite_type (struct gdbarch *gdbarch, char *name, enum type_code code) | |
3696 | { | |
3697 | struct type *t; | |
d8734c88 | 3698 | |
e9bb382b UW |
3699 | gdb_assert (code == TYPE_CODE_STRUCT || code == TYPE_CODE_UNION); |
3700 | t = arch_type (gdbarch, code, 0, NULL); | |
3701 | TYPE_TAG_NAME (t) = name; | |
3702 | INIT_CPLUS_SPECIFIC (t); | |
3703 | return t; | |
3704 | } | |
3705 | ||
3706 | /* Add new field with name NAME and type FIELD to composite type T. | |
f5dff777 DJ |
3707 | Do not set the field's position or adjust the type's length; |
3708 | the caller should do so. Return the new field. */ | |
5212577a | 3709 | |
f5dff777 DJ |
3710 | struct field * |
3711 | append_composite_type_field_raw (struct type *t, char *name, | |
3712 | struct type *field) | |
e9bb382b UW |
3713 | { |
3714 | struct field *f; | |
d8734c88 | 3715 | |
e9bb382b UW |
3716 | TYPE_NFIELDS (t) = TYPE_NFIELDS (t) + 1; |
3717 | TYPE_FIELDS (t) = xrealloc (TYPE_FIELDS (t), | |
3718 | sizeof (struct field) * TYPE_NFIELDS (t)); | |
3719 | f = &(TYPE_FIELDS (t)[TYPE_NFIELDS (t) - 1]); | |
3720 | memset (f, 0, sizeof f[0]); | |
3721 | FIELD_TYPE (f[0]) = field; | |
3722 | FIELD_NAME (f[0]) = name; | |
f5dff777 DJ |
3723 | return f; |
3724 | } | |
3725 | ||
3726 | /* Add new field with name NAME and type FIELD to composite type T. | |
3727 | ALIGNMENT (if non-zero) specifies the minimum field alignment. */ | |
5212577a | 3728 | |
f5dff777 DJ |
3729 | void |
3730 | append_composite_type_field_aligned (struct type *t, char *name, | |
3731 | struct type *field, int alignment) | |
3732 | { | |
3733 | struct field *f = append_composite_type_field_raw (t, name, field); | |
d8734c88 | 3734 | |
e9bb382b UW |
3735 | if (TYPE_CODE (t) == TYPE_CODE_UNION) |
3736 | { | |
3737 | if (TYPE_LENGTH (t) < TYPE_LENGTH (field)) | |
3738 | TYPE_LENGTH (t) = TYPE_LENGTH (field); | |
3739 | } | |
3740 | else if (TYPE_CODE (t) == TYPE_CODE_STRUCT) | |
3741 | { | |
3742 | TYPE_LENGTH (t) = TYPE_LENGTH (t) + TYPE_LENGTH (field); | |
3743 | if (TYPE_NFIELDS (t) > 1) | |
3744 | { | |
f41f5e61 PA |
3745 | SET_FIELD_BITPOS (f[0], |
3746 | (FIELD_BITPOS (f[-1]) | |
3747 | + (TYPE_LENGTH (FIELD_TYPE (f[-1])) | |
3748 | * TARGET_CHAR_BIT))); | |
e9bb382b UW |
3749 | |
3750 | if (alignment) | |
3751 | { | |
86c3c1fc AB |
3752 | int left; |
3753 | ||
3754 | alignment *= TARGET_CHAR_BIT; | |
3755 | left = FIELD_BITPOS (f[0]) % alignment; | |
d8734c88 | 3756 | |
e9bb382b UW |
3757 | if (left) |
3758 | { | |
f41f5e61 | 3759 | SET_FIELD_BITPOS (f[0], FIELD_BITPOS (f[0]) + (alignment - left)); |
86c3c1fc | 3760 | TYPE_LENGTH (t) += (alignment - left) / TARGET_CHAR_BIT; |
e9bb382b UW |
3761 | } |
3762 | } | |
3763 | } | |
3764 | } | |
3765 | } | |
3766 | ||
3767 | /* Add new field with name NAME and type FIELD to composite type T. */ | |
5212577a | 3768 | |
e9bb382b UW |
3769 | void |
3770 | append_composite_type_field (struct type *t, char *name, | |
3771 | struct type *field) | |
3772 | { | |
3773 | append_composite_type_field_aligned (t, name, field, 0); | |
3774 | } | |
3775 | ||
000177f0 AC |
3776 | static struct gdbarch_data *gdbtypes_data; |
3777 | ||
3778 | const struct builtin_type * | |
3779 | builtin_type (struct gdbarch *gdbarch) | |
3780 | { | |
3781 | return gdbarch_data (gdbarch, gdbtypes_data); | |
3782 | } | |
3783 | ||
3784 | static void * | |
3785 | gdbtypes_post_init (struct gdbarch *gdbarch) | |
3786 | { | |
3787 | struct builtin_type *builtin_type | |
3788 | = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct builtin_type); | |
3789 | ||
46bf5051 | 3790 | /* Basic types. */ |
e9bb382b UW |
3791 | builtin_type->builtin_void |
3792 | = arch_type (gdbarch, TYPE_CODE_VOID, 1, "void"); | |
3793 | builtin_type->builtin_char | |
3794 | = arch_integer_type (gdbarch, TARGET_CHAR_BIT, | |
3795 | !gdbarch_char_signed (gdbarch), "char"); | |
3796 | builtin_type->builtin_signed_char | |
3797 | = arch_integer_type (gdbarch, TARGET_CHAR_BIT, | |
3798 | 0, "signed char"); | |
3799 | builtin_type->builtin_unsigned_char | |
3800 | = arch_integer_type (gdbarch, TARGET_CHAR_BIT, | |
3801 | 1, "unsigned char"); | |
3802 | builtin_type->builtin_short | |
3803 | = arch_integer_type (gdbarch, gdbarch_short_bit (gdbarch), | |
3804 | 0, "short"); | |
3805 | builtin_type->builtin_unsigned_short | |
3806 | = arch_integer_type (gdbarch, gdbarch_short_bit (gdbarch), | |
3807 | 1, "unsigned short"); | |
3808 | builtin_type->builtin_int | |
3809 | = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch), | |
3810 | 0, "int"); | |
3811 | builtin_type->builtin_unsigned_int | |
3812 | = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch), | |
3813 | 1, "unsigned int"); | |
3814 | builtin_type->builtin_long | |
3815 | = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch), | |
3816 | 0, "long"); | |
3817 | builtin_type->builtin_unsigned_long | |
3818 | = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch), | |
3819 | 1, "unsigned long"); | |
3820 | builtin_type->builtin_long_long | |
3821 | = arch_integer_type (gdbarch, gdbarch_long_long_bit (gdbarch), | |
3822 | 0, "long long"); | |
3823 | builtin_type->builtin_unsigned_long_long | |
3824 | = arch_integer_type (gdbarch, gdbarch_long_long_bit (gdbarch), | |
3825 | 1, "unsigned long long"); | |
70bd8e24 | 3826 | builtin_type->builtin_float |
e9bb382b | 3827 | = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch), |
27067745 | 3828 | "float", gdbarch_float_format (gdbarch)); |
70bd8e24 | 3829 | builtin_type->builtin_double |
e9bb382b | 3830 | = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch), |
27067745 | 3831 | "double", gdbarch_double_format (gdbarch)); |
70bd8e24 | 3832 | builtin_type->builtin_long_double |
e9bb382b | 3833 | = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch), |
27067745 | 3834 | "long double", gdbarch_long_double_format (gdbarch)); |
70bd8e24 | 3835 | builtin_type->builtin_complex |
e9bb382b UW |
3836 | = arch_complex_type (gdbarch, "complex", |
3837 | builtin_type->builtin_float); | |
70bd8e24 | 3838 | builtin_type->builtin_double_complex |
e9bb382b UW |
3839 | = arch_complex_type (gdbarch, "double complex", |
3840 | builtin_type->builtin_double); | |
3841 | builtin_type->builtin_string | |
3842 | = arch_type (gdbarch, TYPE_CODE_STRING, 1, "string"); | |
3843 | builtin_type->builtin_bool | |
3844 | = arch_type (gdbarch, TYPE_CODE_BOOL, 1, "bool"); | |
000177f0 | 3845 | |
7678ef8f TJB |
3846 | /* The following three are about decimal floating point types, which |
3847 | are 32-bits, 64-bits and 128-bits respectively. */ | |
3848 | builtin_type->builtin_decfloat | |
e9bb382b | 3849 | = arch_type (gdbarch, TYPE_CODE_DECFLOAT, 32 / 8, "_Decimal32"); |
7678ef8f | 3850 | builtin_type->builtin_decdouble |
e9bb382b | 3851 | = arch_type (gdbarch, TYPE_CODE_DECFLOAT, 64 / 8, "_Decimal64"); |
7678ef8f | 3852 | builtin_type->builtin_declong |
e9bb382b | 3853 | = arch_type (gdbarch, TYPE_CODE_DECFLOAT, 128 / 8, "_Decimal128"); |
7678ef8f | 3854 | |
69feb676 | 3855 | /* "True" character types. */ |
e9bb382b UW |
3856 | builtin_type->builtin_true_char |
3857 | = arch_character_type (gdbarch, TARGET_CHAR_BIT, 0, "true character"); | |
3858 | builtin_type->builtin_true_unsigned_char | |
3859 | = arch_character_type (gdbarch, TARGET_CHAR_BIT, 1, "true character"); | |
69feb676 | 3860 | |
df4df182 | 3861 | /* Fixed-size integer types. */ |
e9bb382b UW |
3862 | builtin_type->builtin_int0 |
3863 | = arch_integer_type (gdbarch, 0, 0, "int0_t"); | |
3864 | builtin_type->builtin_int8 | |
3865 | = arch_integer_type (gdbarch, 8, 0, "int8_t"); | |
3866 | builtin_type->builtin_uint8 | |
3867 | = arch_integer_type (gdbarch, 8, 1, "uint8_t"); | |
3868 | builtin_type->builtin_int16 | |
3869 | = arch_integer_type (gdbarch, 16, 0, "int16_t"); | |
3870 | builtin_type->builtin_uint16 | |
3871 | = arch_integer_type (gdbarch, 16, 1, "uint16_t"); | |
3872 | builtin_type->builtin_int32 | |
3873 | = arch_integer_type (gdbarch, 32, 0, "int32_t"); | |
3874 | builtin_type->builtin_uint32 | |
3875 | = arch_integer_type (gdbarch, 32, 1, "uint32_t"); | |
3876 | builtin_type->builtin_int64 | |
3877 | = arch_integer_type (gdbarch, 64, 0, "int64_t"); | |
3878 | builtin_type->builtin_uint64 | |
3879 | = arch_integer_type (gdbarch, 64, 1, "uint64_t"); | |
3880 | builtin_type->builtin_int128 | |
3881 | = arch_integer_type (gdbarch, 128, 0, "int128_t"); | |
3882 | builtin_type->builtin_uint128 | |
3883 | = arch_integer_type (gdbarch, 128, 1, "uint128_t"); | |
2844d6b5 KW |
3884 | TYPE_INSTANCE_FLAGS (builtin_type->builtin_int8) |= |
3885 | TYPE_INSTANCE_FLAG_NOTTEXT; | |
3886 | TYPE_INSTANCE_FLAGS (builtin_type->builtin_uint8) |= | |
3887 | TYPE_INSTANCE_FLAG_NOTTEXT; | |
df4df182 | 3888 | |
9a22f0d0 PM |
3889 | /* Wide character types. */ |
3890 | builtin_type->builtin_char16 | |
3891 | = arch_integer_type (gdbarch, 16, 0, "char16_t"); | |
3892 | builtin_type->builtin_char32 | |
3893 | = arch_integer_type (gdbarch, 32, 0, "char32_t"); | |
3894 | ||
3895 | ||
46bf5051 | 3896 | /* Default data/code pointer types. */ |
e9bb382b UW |
3897 | builtin_type->builtin_data_ptr |
3898 | = lookup_pointer_type (builtin_type->builtin_void); | |
3899 | builtin_type->builtin_func_ptr | |
3900 | = lookup_pointer_type (lookup_function_type (builtin_type->builtin_void)); | |
0875794a JK |
3901 | builtin_type->builtin_func_func |
3902 | = lookup_function_type (builtin_type->builtin_func_ptr); | |
46bf5051 | 3903 | |
78267919 | 3904 | /* This type represents a GDB internal function. */ |
e9bb382b UW |
3905 | builtin_type->internal_fn |
3906 | = arch_type (gdbarch, TYPE_CODE_INTERNAL_FUNCTION, 0, | |
3907 | "<internal function>"); | |
78267919 | 3908 | |
46bf5051 UW |
3909 | return builtin_type; |
3910 | } | |
3911 | ||
46bf5051 UW |
3912 | /* This set of objfile-based types is intended to be used by symbol |
3913 | readers as basic types. */ | |
3914 | ||
3915 | static const struct objfile_data *objfile_type_data; | |
3916 | ||
3917 | const struct objfile_type * | |
3918 | objfile_type (struct objfile *objfile) | |
3919 | { | |
3920 | struct gdbarch *gdbarch; | |
3921 | struct objfile_type *objfile_type | |
3922 | = objfile_data (objfile, objfile_type_data); | |
3923 | ||
3924 | if (objfile_type) | |
3925 | return objfile_type; | |
3926 | ||
3927 | objfile_type = OBSTACK_CALLOC (&objfile->objfile_obstack, | |
3928 | 1, struct objfile_type); | |
3929 | ||
3930 | /* Use the objfile architecture to determine basic type properties. */ | |
3931 | gdbarch = get_objfile_arch (objfile); | |
3932 | ||
3933 | /* Basic types. */ | |
3934 | objfile_type->builtin_void | |
3935 | = init_type (TYPE_CODE_VOID, 1, | |
3936 | 0, | |
3937 | "void", objfile); | |
3938 | ||
3939 | objfile_type->builtin_char | |
3940 | = init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT, | |
3941 | (TYPE_FLAG_NOSIGN | |
3942 | | (gdbarch_char_signed (gdbarch) ? 0 : TYPE_FLAG_UNSIGNED)), | |
3943 | "char", objfile); | |
3944 | objfile_type->builtin_signed_char | |
3945 | = init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT, | |
3946 | 0, | |
3947 | "signed char", objfile); | |
3948 | objfile_type->builtin_unsigned_char | |
3949 | = init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT, | |
3950 | TYPE_FLAG_UNSIGNED, | |
3951 | "unsigned char", objfile); | |
3952 | objfile_type->builtin_short | |
3953 | = init_type (TYPE_CODE_INT, | |
3954 | gdbarch_short_bit (gdbarch) / TARGET_CHAR_BIT, | |
3955 | 0, "short", objfile); | |
3956 | objfile_type->builtin_unsigned_short | |
3957 | = init_type (TYPE_CODE_INT, | |
3958 | gdbarch_short_bit (gdbarch) / TARGET_CHAR_BIT, | |
3959 | TYPE_FLAG_UNSIGNED, "unsigned short", objfile); | |
3960 | objfile_type->builtin_int | |
3961 | = init_type (TYPE_CODE_INT, | |
3962 | gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT, | |
3963 | 0, "int", objfile); | |
3964 | objfile_type->builtin_unsigned_int | |
3965 | = init_type (TYPE_CODE_INT, | |
3966 | gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT, | |
3967 | TYPE_FLAG_UNSIGNED, "unsigned int", objfile); | |
3968 | objfile_type->builtin_long | |
3969 | = init_type (TYPE_CODE_INT, | |
3970 | gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT, | |
3971 | 0, "long", objfile); | |
3972 | objfile_type->builtin_unsigned_long | |
3973 | = init_type (TYPE_CODE_INT, | |
3974 | gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT, | |
3975 | TYPE_FLAG_UNSIGNED, "unsigned long", objfile); | |
3976 | objfile_type->builtin_long_long | |
3977 | = init_type (TYPE_CODE_INT, | |
3978 | gdbarch_long_long_bit (gdbarch) / TARGET_CHAR_BIT, | |
3979 | 0, "long long", objfile); | |
3980 | objfile_type->builtin_unsigned_long_long | |
3981 | = init_type (TYPE_CODE_INT, | |
3982 | gdbarch_long_long_bit (gdbarch) / TARGET_CHAR_BIT, | |
3983 | TYPE_FLAG_UNSIGNED, "unsigned long long", objfile); | |
3984 | ||
3985 | objfile_type->builtin_float | |
3986 | = init_type (TYPE_CODE_FLT, | |
3987 | gdbarch_float_bit (gdbarch) / TARGET_CHAR_BIT, | |
3988 | 0, "float", objfile); | |
3989 | TYPE_FLOATFORMAT (objfile_type->builtin_float) | |
3990 | = gdbarch_float_format (gdbarch); | |
3991 | objfile_type->builtin_double | |
3992 | = init_type (TYPE_CODE_FLT, | |
3993 | gdbarch_double_bit (gdbarch) / TARGET_CHAR_BIT, | |
3994 | 0, "double", objfile); | |
3995 | TYPE_FLOATFORMAT (objfile_type->builtin_double) | |
3996 | = gdbarch_double_format (gdbarch); | |
3997 | objfile_type->builtin_long_double | |
3998 | = init_type (TYPE_CODE_FLT, | |
3999 | gdbarch_long_double_bit (gdbarch) / TARGET_CHAR_BIT, | |
4000 | 0, "long double", objfile); | |
4001 | TYPE_FLOATFORMAT (objfile_type->builtin_long_double) | |
4002 | = gdbarch_long_double_format (gdbarch); | |
4003 | ||
4004 | /* This type represents a type that was unrecognized in symbol read-in. */ | |
4005 | objfile_type->builtin_error | |
4006 | = init_type (TYPE_CODE_ERROR, 0, 0, "<unknown type>", objfile); | |
4007 | ||
4008 | /* The following set of types is used for symbols with no | |
4009 | debug information. */ | |
4010 | objfile_type->nodebug_text_symbol | |
4011 | = init_type (TYPE_CODE_FUNC, 1, 0, | |
4012 | "<text variable, no debug info>", objfile); | |
4013 | TYPE_TARGET_TYPE (objfile_type->nodebug_text_symbol) | |
4014 | = objfile_type->builtin_int; | |
0875794a JK |
4015 | objfile_type->nodebug_text_gnu_ifunc_symbol |
4016 | = init_type (TYPE_CODE_FUNC, 1, TYPE_FLAG_GNU_IFUNC, | |
4017 | "<text gnu-indirect-function variable, no debug info>", | |
4018 | objfile); | |
4019 | TYPE_TARGET_TYPE (objfile_type->nodebug_text_gnu_ifunc_symbol) | |
4020 | = objfile_type->nodebug_text_symbol; | |
4021 | objfile_type->nodebug_got_plt_symbol | |
4022 | = init_type (TYPE_CODE_PTR, gdbarch_addr_bit (gdbarch) / 8, 0, | |
4023 | "<text from jump slot in .got.plt, no debug info>", | |
4024 | objfile); | |
4025 | TYPE_TARGET_TYPE (objfile_type->nodebug_got_plt_symbol) | |
4026 | = objfile_type->nodebug_text_symbol; | |
46bf5051 UW |
4027 | objfile_type->nodebug_data_symbol |
4028 | = init_type (TYPE_CODE_INT, | |
4029 | gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT, 0, | |
4030 | "<data variable, no debug info>", objfile); | |
4031 | objfile_type->nodebug_unknown_symbol | |
4032 | = init_type (TYPE_CODE_INT, 1, 0, | |
4033 | "<variable (not text or data), no debug info>", objfile); | |
4034 | objfile_type->nodebug_tls_symbol | |
4035 | = init_type (TYPE_CODE_INT, | |
4036 | gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT, 0, | |
4037 | "<thread local variable, no debug info>", objfile); | |
000177f0 AC |
4038 | |
4039 | /* NOTE: on some targets, addresses and pointers are not necessarily | |
4040 | the same --- for example, on the D10V, pointers are 16 bits long, | |
4041 | but addresses are 32 bits long. See doc/gdbint.texinfo, | |
4042 | ``Pointers Are Not Always Addresses''. | |
4043 | ||
4044 | The upshot is: | |
4045 | - gdb's `struct type' always describes the target's | |
4046 | representation. | |
4047 | - gdb's `struct value' objects should always hold values in | |
4048 | target form. | |
4049 | - gdb's CORE_ADDR values are addresses in the unified virtual | |
4050 | address space that the assembler and linker work with. Thus, | |
4051 | since target_read_memory takes a CORE_ADDR as an argument, it | |
4052 | can access any memory on the target, even if the processor has | |
4053 | separate code and data address spaces. | |
4054 | ||
4055 | So, for example: | |
4056 | - If v is a value holding a D10V code pointer, its contents are | |
4057 | in target form: a big-endian address left-shifted two bits. | |
4058 | - If p is a D10V pointer type, TYPE_LENGTH (p) == 2, just as | |
4059 | sizeof (void *) == 2 on the target. | |
4060 | ||
46bf5051 UW |
4061 | In this context, objfile_type->builtin_core_addr is a bit odd: |
4062 | it's a target type for a value the target will never see. It's | |
4063 | only used to hold the values of (typeless) linker symbols, which | |
4064 | are indeed in the unified virtual address space. */ | |
000177f0 | 4065 | |
46bf5051 UW |
4066 | objfile_type->builtin_core_addr |
4067 | = init_type (TYPE_CODE_INT, | |
4068 | gdbarch_addr_bit (gdbarch) / 8, | |
4069 | TYPE_FLAG_UNSIGNED, "__CORE_ADDR", objfile); | |
64c50499 | 4070 | |
46bf5051 UW |
4071 | set_objfile_data (objfile, objfile_type_data, objfile_type); |
4072 | return objfile_type; | |
000177f0 AC |
4073 | } |
4074 | ||
5212577a | 4075 | extern initialize_file_ftype _initialize_gdbtypes; |
46bf5051 | 4076 | |
c906108c | 4077 | void |
fba45db2 | 4078 | _initialize_gdbtypes (void) |
c906108c | 4079 | { |
5674de60 | 4080 | gdbtypes_data = gdbarch_data_register_post_init (gdbtypes_post_init); |
46bf5051 | 4081 | objfile_type_data = register_objfile_data (); |
5674de60 | 4082 | |
ccce17b0 YQ |
4083 | add_setshow_zuinteger_cmd ("overload", no_class, &overload_debug, |
4084 | _("Set debugging of C++ overloading."), | |
4085 | _("Show debugging of C++ overloading."), | |
4086 | _("When enabled, ranking of the " | |
4087 | "functions is displayed."), | |
4088 | NULL, | |
4089 | show_overload_debug, | |
4090 | &setdebuglist, &showdebuglist); | |
5674de60 | 4091 | |
7ba81444 | 4092 | /* Add user knob for controlling resolution of opaque types. */ |
5674de60 | 4093 | add_setshow_boolean_cmd ("opaque-type-resolution", class_support, |
3e43a32a MS |
4094 | &opaque_type_resolution, |
4095 | _("Set resolution of opaque struct/class/union" | |
4096 | " types (if set before loading symbols)."), | |
4097 | _("Show resolution of opaque struct/class/union" | |
4098 | " types (if set before loading symbols)."), | |
4099 | NULL, NULL, | |
5674de60 UW |
4100 | show_opaque_type_resolution, |
4101 | &setlist, &showlist); | |
a451cb65 KS |
4102 | |
4103 | /* Add an option to permit non-strict type checking. */ | |
4104 | add_setshow_boolean_cmd ("type", class_support, | |
4105 | &strict_type_checking, | |
4106 | _("Set strict type checking."), | |
4107 | _("Show strict type checking."), | |
4108 | NULL, NULL, | |
4109 | show_strict_type_checking, | |
4110 | &setchecklist, &showchecklist); | |
c906108c | 4111 | } |