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1 | /* Support routines for manipulating internal types for GDB. | |
2 | ||
3 | Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001, 2002, | |
4 | 2003, 2004, 2005, 2006 Free Software Foundation, Inc. | |
5 | ||
6 | Contributed by Cygnus Support, using pieces from other GDB modules. | |
7 | ||
8 | This file is part of GDB. | |
9 | ||
10 | This program is free software; you can redistribute it and/or modify | |
11 | it under the terms of the GNU General Public License as published by | |
12 | the Free Software Foundation; either version 2 of the License, or | |
13 | (at your option) any later version. | |
14 | ||
15 | This program is distributed in the hope that it will be useful, | |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | GNU General Public License for more details. | |
19 | ||
20 | You should have received a copy of the GNU General Public License | |
21 | along with this program; if not, write to the Free Software | |
22 | Foundation, Inc., 51 Franklin Street, Fifth Floor, | |
23 | Boston, MA 02110-1301, USA. */ | |
24 | ||
25 | #include "defs.h" | |
26 | #include "gdb_string.h" | |
27 | #include "bfd.h" | |
28 | #include "symtab.h" | |
29 | #include "symfile.h" | |
30 | #include "objfiles.h" | |
31 | #include "gdbtypes.h" | |
32 | #include "expression.h" | |
33 | #include "language.h" | |
34 | #include "target.h" | |
35 | #include "value.h" | |
36 | #include "demangle.h" | |
37 | #include "complaints.h" | |
38 | #include "gdbcmd.h" | |
39 | #include "wrapper.h" | |
40 | #include "cp-abi.h" | |
41 | #include "gdb_assert.h" | |
42 | #include "hashtab.h" | |
43 | ||
44 | /* These variables point to the objects | |
45 | representing the predefined C data types. */ | |
46 | ||
47 | struct type *builtin_type_void; | |
48 | struct type *builtin_type_char; | |
49 | struct type *builtin_type_true_char; | |
50 | struct type *builtin_type_short; | |
51 | struct type *builtin_type_int; | |
52 | struct type *builtin_type_long; | |
53 | struct type *builtin_type_long_long; | |
54 | struct type *builtin_type_signed_char; | |
55 | struct type *builtin_type_unsigned_char; | |
56 | struct type *builtin_type_unsigned_short; | |
57 | struct type *builtin_type_unsigned_int; | |
58 | struct type *builtin_type_unsigned_long; | |
59 | struct type *builtin_type_unsigned_long_long; | |
60 | struct type *builtin_type_float; | |
61 | struct type *builtin_type_double; | |
62 | struct type *builtin_type_long_double; | |
63 | struct type *builtin_type_complex; | |
64 | struct type *builtin_type_double_complex; | |
65 | struct type *builtin_type_string; | |
66 | struct type *builtin_type_int0; | |
67 | struct type *builtin_type_int8; | |
68 | struct type *builtin_type_uint8; | |
69 | struct type *builtin_type_int16; | |
70 | struct type *builtin_type_uint16; | |
71 | struct type *builtin_type_int32; | |
72 | struct type *builtin_type_uint32; | |
73 | struct type *builtin_type_int64; | |
74 | struct type *builtin_type_uint64; | |
75 | struct type *builtin_type_int128; | |
76 | struct type *builtin_type_uint128; | |
77 | struct type *builtin_type_bool; | |
78 | ||
79 | /* 128 bit long vector types */ | |
80 | struct type *builtin_type_v2_double; | |
81 | struct type *builtin_type_v4_float; | |
82 | struct type *builtin_type_v2_int64; | |
83 | struct type *builtin_type_v4_int32; | |
84 | struct type *builtin_type_v8_int16; | |
85 | struct type *builtin_type_v16_int8; | |
86 | /* 64 bit long vector types */ | |
87 | struct type *builtin_type_v2_float; | |
88 | struct type *builtin_type_v2_int32; | |
89 | struct type *builtin_type_v4_int16; | |
90 | struct type *builtin_type_v8_int8; | |
91 | ||
92 | struct type *builtin_type_v4sf; | |
93 | struct type *builtin_type_v4si; | |
94 | struct type *builtin_type_v16qi; | |
95 | struct type *builtin_type_v8qi; | |
96 | struct type *builtin_type_v8hi; | |
97 | struct type *builtin_type_v4hi; | |
98 | struct type *builtin_type_v2si; | |
99 | struct type *builtin_type_vec64; | |
100 | struct type *builtin_type_vec128; | |
101 | struct type *builtin_type_ieee_single[BFD_ENDIAN_UNKNOWN]; | |
102 | struct type *builtin_type_ieee_single_big; | |
103 | struct type *builtin_type_ieee_single_little; | |
104 | struct type *builtin_type_ieee_double[BFD_ENDIAN_UNKNOWN]; | |
105 | struct type *builtin_type_ieee_double_big; | |
106 | struct type *builtin_type_ieee_double_little; | |
107 | struct type *builtin_type_ieee_double_littlebyte_bigword; | |
108 | struct type *builtin_type_i387_ext; | |
109 | struct type *builtin_type_m68881_ext; | |
110 | struct type *builtin_type_i960_ext; | |
111 | struct type *builtin_type_m88110_ext; | |
112 | struct type *builtin_type_m88110_harris_ext; | |
113 | struct type *builtin_type_arm_ext[BFD_ENDIAN_UNKNOWN]; | |
114 | struct type *builtin_type_arm_ext_big; | |
115 | struct type *builtin_type_arm_ext_littlebyte_bigword; | |
116 | struct type *builtin_type_ia64_spill[BFD_ENDIAN_UNKNOWN]; | |
117 | struct type *builtin_type_ia64_spill_big; | |
118 | struct type *builtin_type_ia64_spill_little; | |
119 | struct type *builtin_type_ia64_quad[BFD_ENDIAN_UNKNOWN]; | |
120 | struct type *builtin_type_ia64_quad_big; | |
121 | struct type *builtin_type_ia64_quad_little; | |
122 | struct type *builtin_type_void_data_ptr; | |
123 | struct type *builtin_type_void_func_ptr; | |
124 | struct type *builtin_type_CORE_ADDR; | |
125 | struct type *builtin_type_bfd_vma; | |
126 | ||
127 | int opaque_type_resolution = 1; | |
128 | static void | |
129 | show_opaque_type_resolution (struct ui_file *file, int from_tty, | |
130 | struct cmd_list_element *c, const char *value) | |
131 | { | |
132 | fprintf_filtered (file, _("\ | |
133 | Resolution of opaque struct/class/union types (if set before loading symbols) is %s.\n"), | |
134 | value); | |
135 | } | |
136 | ||
137 | int overload_debug = 0; | |
138 | static void | |
139 | show_overload_debug (struct ui_file *file, int from_tty, | |
140 | struct cmd_list_element *c, const char *value) | |
141 | { | |
142 | fprintf_filtered (file, _("Debugging of C++ overloading is %s.\n"), value); | |
143 | } | |
144 | ||
145 | struct extra | |
146 | { | |
147 | char str[128]; | |
148 | int len; | |
149 | }; /* maximum extension is 128! FIXME */ | |
150 | ||
151 | static void print_bit_vector (B_TYPE *, int); | |
152 | static void print_arg_types (struct field *, int, int); | |
153 | static void dump_fn_fieldlists (struct type *, int); | |
154 | static void print_cplus_stuff (struct type *, int); | |
155 | static void virtual_base_list_aux (struct type *dclass); | |
156 | ||
157 | ||
158 | /* Alloc a new type structure and fill it with some defaults. If | |
159 | OBJFILE is non-NULL, then allocate the space for the type structure | |
160 | in that objfile's objfile_obstack. Otherwise allocate the new type structure | |
161 | by xmalloc () (for permanent types). */ | |
162 | ||
163 | struct type * | |
164 | alloc_type (struct objfile *objfile) | |
165 | { | |
166 | struct type *type; | |
167 | ||
168 | /* Alloc the structure and start off with all fields zeroed. */ | |
169 | ||
170 | if (objfile == NULL) | |
171 | { | |
172 | type = xmalloc (sizeof (struct type)); | |
173 | memset (type, 0, sizeof (struct type)); | |
174 | TYPE_MAIN_TYPE (type) = xmalloc (sizeof (struct main_type)); | |
175 | } | |
176 | else | |
177 | { | |
178 | type = obstack_alloc (&objfile->objfile_obstack, | |
179 | sizeof (struct type)); | |
180 | memset (type, 0, sizeof (struct type)); | |
181 | TYPE_MAIN_TYPE (type) = obstack_alloc (&objfile->objfile_obstack, | |
182 | sizeof (struct main_type)); | |
183 | OBJSTAT (objfile, n_types++); | |
184 | } | |
185 | memset (TYPE_MAIN_TYPE (type), 0, sizeof (struct main_type)); | |
186 | ||
187 | /* Initialize the fields that might not be zero. */ | |
188 | ||
189 | TYPE_CODE (type) = TYPE_CODE_UNDEF; | |
190 | TYPE_OBJFILE (type) = objfile; | |
191 | TYPE_VPTR_FIELDNO (type) = -1; | |
192 | TYPE_CHAIN (type) = type; /* Chain back to itself. */ | |
193 | ||
194 | return (type); | |
195 | } | |
196 | ||
197 | /* Alloc a new type instance structure, fill it with some defaults, | |
198 | and point it at OLDTYPE. Allocate the new type instance from the | |
199 | same place as OLDTYPE. */ | |
200 | ||
201 | static struct type * | |
202 | alloc_type_instance (struct type *oldtype) | |
203 | { | |
204 | struct type *type; | |
205 | ||
206 | /* Allocate the structure. */ | |
207 | ||
208 | if (TYPE_OBJFILE (oldtype) == NULL) | |
209 | { | |
210 | type = xmalloc (sizeof (struct type)); | |
211 | memset (type, 0, sizeof (struct type)); | |
212 | } | |
213 | else | |
214 | { | |
215 | type = obstack_alloc (&TYPE_OBJFILE (oldtype)->objfile_obstack, | |
216 | sizeof (struct type)); | |
217 | memset (type, 0, sizeof (struct type)); | |
218 | } | |
219 | TYPE_MAIN_TYPE (type) = TYPE_MAIN_TYPE (oldtype); | |
220 | ||
221 | TYPE_CHAIN (type) = type; /* Chain back to itself for now. */ | |
222 | ||
223 | return (type); | |
224 | } | |
225 | ||
226 | /* Clear all remnants of the previous type at TYPE, in preparation for | |
227 | replacing it with something else. */ | |
228 | static void | |
229 | smash_type (struct type *type) | |
230 | { | |
231 | memset (TYPE_MAIN_TYPE (type), 0, sizeof (struct main_type)); | |
232 | ||
233 | /* For now, delete the rings. */ | |
234 | TYPE_CHAIN (type) = type; | |
235 | ||
236 | /* For now, leave the pointer/reference types alone. */ | |
237 | } | |
238 | ||
239 | /* Lookup a pointer to a type TYPE. TYPEPTR, if nonzero, points | |
240 | to a pointer to memory where the pointer type should be stored. | |
241 | If *TYPEPTR is zero, update it to point to the pointer type we return. | |
242 | We allocate new memory if needed. */ | |
243 | ||
244 | struct type * | |
245 | make_pointer_type (struct type *type, struct type **typeptr) | |
246 | { | |
247 | struct type *ntype; /* New type */ | |
248 | struct objfile *objfile; | |
249 | ||
250 | ntype = TYPE_POINTER_TYPE (type); | |
251 | ||
252 | if (ntype) | |
253 | { | |
254 | if (typeptr == 0) | |
255 | return ntype; /* Don't care about alloc, and have new type. */ | |
256 | else if (*typeptr == 0) | |
257 | { | |
258 | *typeptr = ntype; /* Tracking alloc, and we have new type. */ | |
259 | return ntype; | |
260 | } | |
261 | } | |
262 | ||
263 | if (typeptr == 0 || *typeptr == 0) /* We'll need to allocate one. */ | |
264 | { | |
265 | ntype = alloc_type (TYPE_OBJFILE (type)); | |
266 | if (typeptr) | |
267 | *typeptr = ntype; | |
268 | } | |
269 | else | |
270 | /* We have storage, but need to reset it. */ | |
271 | { | |
272 | ntype = *typeptr; | |
273 | objfile = TYPE_OBJFILE (ntype); | |
274 | smash_type (ntype); | |
275 | TYPE_OBJFILE (ntype) = objfile; | |
276 | } | |
277 | ||
278 | TYPE_TARGET_TYPE (ntype) = type; | |
279 | TYPE_POINTER_TYPE (type) = ntype; | |
280 | ||
281 | /* FIXME! Assume the machine has only one representation for pointers! */ | |
282 | ||
283 | TYPE_LENGTH (ntype) = TARGET_PTR_BIT / TARGET_CHAR_BIT; | |
284 | TYPE_CODE (ntype) = TYPE_CODE_PTR; | |
285 | ||
286 | /* Mark pointers as unsigned. The target converts between pointers | |
287 | and addresses (CORE_ADDRs) using POINTER_TO_ADDRESS() and | |
288 | ADDRESS_TO_POINTER(). */ | |
289 | TYPE_FLAGS (ntype) |= TYPE_FLAG_UNSIGNED; | |
290 | ||
291 | if (!TYPE_POINTER_TYPE (type)) /* Remember it, if don't have one. */ | |
292 | TYPE_POINTER_TYPE (type) = ntype; | |
293 | ||
294 | return ntype; | |
295 | } | |
296 | ||
297 | /* Given a type TYPE, return a type of pointers to that type. | |
298 | May need to construct such a type if this is the first use. */ | |
299 | ||
300 | struct type * | |
301 | lookup_pointer_type (struct type *type) | |
302 | { | |
303 | return make_pointer_type (type, (struct type **) 0); | |
304 | } | |
305 | ||
306 | /* Lookup a C++ `reference' to a type TYPE. TYPEPTR, if nonzero, points | |
307 | to a pointer to memory where the reference type should be stored. | |
308 | If *TYPEPTR is zero, update it to point to the reference type we return. | |
309 | We allocate new memory if needed. */ | |
310 | ||
311 | struct type * | |
312 | make_reference_type (struct type *type, struct type **typeptr) | |
313 | { | |
314 | struct type *ntype; /* New type */ | |
315 | struct objfile *objfile; | |
316 | ||
317 | ntype = TYPE_REFERENCE_TYPE (type); | |
318 | ||
319 | if (ntype) | |
320 | { | |
321 | if (typeptr == 0) | |
322 | return ntype; /* Don't care about alloc, and have new type. */ | |
323 | else if (*typeptr == 0) | |
324 | { | |
325 | *typeptr = ntype; /* Tracking alloc, and we have new type. */ | |
326 | return ntype; | |
327 | } | |
328 | } | |
329 | ||
330 | if (typeptr == 0 || *typeptr == 0) /* We'll need to allocate one. */ | |
331 | { | |
332 | ntype = alloc_type (TYPE_OBJFILE (type)); | |
333 | if (typeptr) | |
334 | *typeptr = ntype; | |
335 | } | |
336 | else | |
337 | /* We have storage, but need to reset it. */ | |
338 | { | |
339 | ntype = *typeptr; | |
340 | objfile = TYPE_OBJFILE (ntype); | |
341 | smash_type (ntype); | |
342 | TYPE_OBJFILE (ntype) = objfile; | |
343 | } | |
344 | ||
345 | TYPE_TARGET_TYPE (ntype) = type; | |
346 | TYPE_REFERENCE_TYPE (type) = ntype; | |
347 | ||
348 | /* FIXME! Assume the machine has only one representation for references, | |
349 | and that it matches the (only) representation for pointers! */ | |
350 | ||
351 | TYPE_LENGTH (ntype) = TARGET_PTR_BIT / TARGET_CHAR_BIT; | |
352 | TYPE_CODE (ntype) = TYPE_CODE_REF; | |
353 | ||
354 | if (!TYPE_REFERENCE_TYPE (type)) /* Remember it, if don't have one. */ | |
355 | TYPE_REFERENCE_TYPE (type) = ntype; | |
356 | ||
357 | return ntype; | |
358 | } | |
359 | ||
360 | /* Same as above, but caller doesn't care about memory allocation details. */ | |
361 | ||
362 | struct type * | |
363 | lookup_reference_type (struct type *type) | |
364 | { | |
365 | return make_reference_type (type, (struct type **) 0); | |
366 | } | |
367 | ||
368 | /* Lookup a function type that returns type TYPE. TYPEPTR, if nonzero, points | |
369 | to a pointer to memory where the function type should be stored. | |
370 | If *TYPEPTR is zero, update it to point to the function type we return. | |
371 | We allocate new memory if needed. */ | |
372 | ||
373 | struct type * | |
374 | make_function_type (struct type *type, struct type **typeptr) | |
375 | { | |
376 | struct type *ntype; /* New type */ | |
377 | struct objfile *objfile; | |
378 | ||
379 | if (typeptr == 0 || *typeptr == 0) /* We'll need to allocate one. */ | |
380 | { | |
381 | ntype = alloc_type (TYPE_OBJFILE (type)); | |
382 | if (typeptr) | |
383 | *typeptr = ntype; | |
384 | } | |
385 | else | |
386 | /* We have storage, but need to reset it. */ | |
387 | { | |
388 | ntype = *typeptr; | |
389 | objfile = TYPE_OBJFILE (ntype); | |
390 | smash_type (ntype); | |
391 | TYPE_OBJFILE (ntype) = objfile; | |
392 | } | |
393 | ||
394 | TYPE_TARGET_TYPE (ntype) = type; | |
395 | ||
396 | TYPE_LENGTH (ntype) = 1; | |
397 | TYPE_CODE (ntype) = TYPE_CODE_FUNC; | |
398 | ||
399 | return ntype; | |
400 | } | |
401 | ||
402 | ||
403 | /* Given a type TYPE, return a type of functions that return that type. | |
404 | May need to construct such a type if this is the first use. */ | |
405 | ||
406 | struct type * | |
407 | lookup_function_type (struct type *type) | |
408 | { | |
409 | return make_function_type (type, (struct type **) 0); | |
410 | } | |
411 | ||
412 | /* Identify address space identifier by name -- | |
413 | return the integer flag defined in gdbtypes.h. */ | |
414 | extern int | |
415 | address_space_name_to_int (char *space_identifier) | |
416 | { | |
417 | struct gdbarch *gdbarch = current_gdbarch; | |
418 | int type_flags; | |
419 | /* Check for known address space delimiters. */ | |
420 | if (!strcmp (space_identifier, "code")) | |
421 | return TYPE_FLAG_CODE_SPACE; | |
422 | else if (!strcmp (space_identifier, "data")) | |
423 | return TYPE_FLAG_DATA_SPACE; | |
424 | else if (gdbarch_address_class_name_to_type_flags_p (gdbarch) | |
425 | && gdbarch_address_class_name_to_type_flags (gdbarch, | |
426 | space_identifier, | |
427 | &type_flags)) | |
428 | return type_flags; | |
429 | else | |
430 | error (_("Unknown address space specifier: \"%s\""), space_identifier); | |
431 | } | |
432 | ||
433 | /* Identify address space identifier by integer flag as defined in | |
434 | gdbtypes.h -- return the string version of the adress space name. */ | |
435 | ||
436 | const char * | |
437 | address_space_int_to_name (int space_flag) | |
438 | { | |
439 | struct gdbarch *gdbarch = current_gdbarch; | |
440 | if (space_flag & TYPE_FLAG_CODE_SPACE) | |
441 | return "code"; | |
442 | else if (space_flag & TYPE_FLAG_DATA_SPACE) | |
443 | return "data"; | |
444 | else if ((space_flag & TYPE_FLAG_ADDRESS_CLASS_ALL) | |
445 | && gdbarch_address_class_type_flags_to_name_p (gdbarch)) | |
446 | return gdbarch_address_class_type_flags_to_name (gdbarch, space_flag); | |
447 | else | |
448 | return NULL; | |
449 | } | |
450 | ||
451 | /* Create a new type with instance flags NEW_FLAGS, based on TYPE. | |
452 | ||
453 | If STORAGE is non-NULL, create the new type instance there. | |
454 | STORAGE must be in the same obstack as TYPE. */ | |
455 | ||
456 | static struct type * | |
457 | make_qualified_type (struct type *type, int new_flags, | |
458 | struct type *storage) | |
459 | { | |
460 | struct type *ntype; | |
461 | ||
462 | ntype = type; | |
463 | do { | |
464 | if (TYPE_INSTANCE_FLAGS (ntype) == new_flags) | |
465 | return ntype; | |
466 | ntype = TYPE_CHAIN (ntype); | |
467 | } while (ntype != type); | |
468 | ||
469 | /* Create a new type instance. */ | |
470 | if (storage == NULL) | |
471 | ntype = alloc_type_instance (type); | |
472 | else | |
473 | { | |
474 | /* If STORAGE was provided, it had better be in the same objfile as | |
475 | TYPE. Otherwise, we can't link it into TYPE's cv chain: if one | |
476 | objfile is freed and the other kept, we'd have dangling | |
477 | pointers. */ | |
478 | gdb_assert (TYPE_OBJFILE (type) == TYPE_OBJFILE (storage)); | |
479 | ||
480 | ntype = storage; | |
481 | TYPE_MAIN_TYPE (ntype) = TYPE_MAIN_TYPE (type); | |
482 | TYPE_CHAIN (ntype) = ntype; | |
483 | } | |
484 | ||
485 | /* Pointers or references to the original type are not relevant to | |
486 | the new type. */ | |
487 | TYPE_POINTER_TYPE (ntype) = (struct type *) 0; | |
488 | TYPE_REFERENCE_TYPE (ntype) = (struct type *) 0; | |
489 | ||
490 | /* Chain the new qualified type to the old type. */ | |
491 | TYPE_CHAIN (ntype) = TYPE_CHAIN (type); | |
492 | TYPE_CHAIN (type) = ntype; | |
493 | ||
494 | /* Now set the instance flags and return the new type. */ | |
495 | TYPE_INSTANCE_FLAGS (ntype) = new_flags; | |
496 | ||
497 | /* Set length of new type to that of the original type. */ | |
498 | TYPE_LENGTH (ntype) = TYPE_LENGTH (type); | |
499 | ||
500 | return ntype; | |
501 | } | |
502 | ||
503 | /* Make an address-space-delimited variant of a type -- a type that | |
504 | is identical to the one supplied except that it has an address | |
505 | space attribute attached to it (such as "code" or "data"). | |
506 | ||
507 | The space attributes "code" and "data" are for Harvard architectures. | |
508 | The address space attributes are for architectures which have | |
509 | alternately sized pointers or pointers with alternate representations. */ | |
510 | ||
511 | struct type * | |
512 | make_type_with_address_space (struct type *type, int space_flag) | |
513 | { | |
514 | struct type *ntype; | |
515 | int new_flags = ((TYPE_INSTANCE_FLAGS (type) | |
516 | & ~(TYPE_FLAG_CODE_SPACE | TYPE_FLAG_DATA_SPACE | |
517 | | TYPE_FLAG_ADDRESS_CLASS_ALL)) | |
518 | | space_flag); | |
519 | ||
520 | return make_qualified_type (type, new_flags, NULL); | |
521 | } | |
522 | ||
523 | /* Make a "c-v" variant of a type -- a type that is identical to the | |
524 | one supplied except that it may have const or volatile attributes | |
525 | CNST is a flag for setting the const attribute | |
526 | VOLTL is a flag for setting the volatile attribute | |
527 | TYPE is the base type whose variant we are creating. | |
528 | ||
529 | If TYPEPTR and *TYPEPTR are non-zero, then *TYPEPTR points to | |
530 | storage to hold the new qualified type; *TYPEPTR and TYPE must be | |
531 | in the same objfile. Otherwise, allocate fresh memory for the new | |
532 | type whereever TYPE lives. If TYPEPTR is non-zero, set it to the | |
533 | new type we construct. */ | |
534 | struct type * | |
535 | make_cv_type (int cnst, int voltl, struct type *type, struct type **typeptr) | |
536 | { | |
537 | struct type *ntype; /* New type */ | |
538 | struct type *tmp_type = type; /* tmp type */ | |
539 | struct objfile *objfile; | |
540 | ||
541 | int new_flags = (TYPE_INSTANCE_FLAGS (type) | |
542 | & ~(TYPE_FLAG_CONST | TYPE_FLAG_VOLATILE)); | |
543 | ||
544 | if (cnst) | |
545 | new_flags |= TYPE_FLAG_CONST; | |
546 | ||
547 | if (voltl) | |
548 | new_flags |= TYPE_FLAG_VOLATILE; | |
549 | ||
550 | if (typeptr && *typeptr != NULL) | |
551 | { | |
552 | /* TYPE and *TYPEPTR must be in the same objfile. We can't have | |
553 | a C-V variant chain that threads across objfiles: if one | |
554 | objfile gets freed, then the other has a broken C-V chain. | |
555 | ||
556 | This code used to try to copy over the main type from TYPE to | |
557 | *TYPEPTR if they were in different objfiles, but that's | |
558 | wrong, too: TYPE may have a field list or member function | |
559 | lists, which refer to types of their own, etc. etc. The | |
560 | whole shebang would need to be copied over recursively; you | |
561 | can't have inter-objfile pointers. The only thing to do is | |
562 | to leave stub types as stub types, and look them up afresh by | |
563 | name each time you encounter them. */ | |
564 | gdb_assert (TYPE_OBJFILE (*typeptr) == TYPE_OBJFILE (type)); | |
565 | } | |
566 | ||
567 | ntype = make_qualified_type (type, new_flags, typeptr ? *typeptr : NULL); | |
568 | ||
569 | if (typeptr != NULL) | |
570 | *typeptr = ntype; | |
571 | ||
572 | return ntype; | |
573 | } | |
574 | ||
575 | /* Replace the contents of ntype with the type *type. This changes the | |
576 | contents, rather than the pointer for TYPE_MAIN_TYPE (ntype); thus | |
577 | the changes are propogated to all types in the TYPE_CHAIN. | |
578 | ||
579 | In order to build recursive types, it's inevitable that we'll need | |
580 | to update types in place --- but this sort of indiscriminate | |
581 | smashing is ugly, and needs to be replaced with something more | |
582 | controlled. TYPE_MAIN_TYPE is a step in this direction; it's not | |
583 | clear if more steps are needed. */ | |
584 | void | |
585 | replace_type (struct type *ntype, struct type *type) | |
586 | { | |
587 | struct type *chain; | |
588 | ||
589 | /* These two types had better be in the same objfile. Otherwise, | |
590 | the assignment of one type's main type structure to the other | |
591 | will produce a type with references to objects (names; field | |
592 | lists; etc.) allocated on an objfile other than its own. */ | |
593 | gdb_assert (TYPE_OBJFILE (ntype) == TYPE_OBJFILE (ntype)); | |
594 | ||
595 | *TYPE_MAIN_TYPE (ntype) = *TYPE_MAIN_TYPE (type); | |
596 | ||
597 | /* The type length is not a part of the main type. Update it for each | |
598 | type on the variant chain. */ | |
599 | chain = ntype; | |
600 | do { | |
601 | /* Assert that this element of the chain has no address-class bits | |
602 | set in its flags. Such type variants might have type lengths | |
603 | which are supposed to be different from the non-address-class | |
604 | variants. This assertion shouldn't ever be triggered because | |
605 | symbol readers which do construct address-class variants don't | |
606 | call replace_type(). */ | |
607 | gdb_assert (TYPE_ADDRESS_CLASS_ALL (chain) == 0); | |
608 | ||
609 | TYPE_LENGTH (ntype) = TYPE_LENGTH (type); | |
610 | chain = TYPE_CHAIN (chain); | |
611 | } while (ntype != chain); | |
612 | ||
613 | /* Assert that the two types have equivalent instance qualifiers. | |
614 | This should be true for at least all of our debug readers. */ | |
615 | gdb_assert (TYPE_INSTANCE_FLAGS (ntype) == TYPE_INSTANCE_FLAGS (type)); | |
616 | } | |
617 | ||
618 | /* Implement direct support for MEMBER_TYPE in GNU C++. | |
619 | May need to construct such a type if this is the first use. | |
620 | The TYPE is the type of the member. The DOMAIN is the type | |
621 | of the aggregate that the member belongs to. */ | |
622 | ||
623 | struct type * | |
624 | lookup_memberptr_type (struct type *type, struct type *domain) | |
625 | { | |
626 | struct type *mtype; | |
627 | ||
628 | mtype = alloc_type (TYPE_OBJFILE (type)); | |
629 | smash_to_memberptr_type (mtype, domain, type); | |
630 | return (mtype); | |
631 | } | |
632 | ||
633 | /* Return a pointer-to-method type, for a method of type TO_TYPE. */ | |
634 | ||
635 | struct type * | |
636 | lookup_methodptr_type (struct type *to_type) | |
637 | { | |
638 | struct type *mtype; | |
639 | ||
640 | mtype = alloc_type (TYPE_OBJFILE (to_type)); | |
641 | TYPE_TARGET_TYPE (mtype) = to_type; | |
642 | TYPE_DOMAIN_TYPE (mtype) = TYPE_DOMAIN_TYPE (to_type); | |
643 | TYPE_LENGTH (mtype) = cplus_method_ptr_size (); | |
644 | TYPE_CODE (mtype) = TYPE_CODE_METHODPTR; | |
645 | return mtype; | |
646 | } | |
647 | ||
648 | /* Allocate a stub method whose return type is TYPE. | |
649 | This apparently happens for speed of symbol reading, since parsing | |
650 | out the arguments to the method is cpu-intensive, the way we are doing | |
651 | it. So, we will fill in arguments later. | |
652 | This always returns a fresh type. */ | |
653 | ||
654 | struct type * | |
655 | allocate_stub_method (struct type *type) | |
656 | { | |
657 | struct type *mtype; | |
658 | ||
659 | mtype = init_type (TYPE_CODE_METHOD, 1, TYPE_FLAG_STUB, NULL, | |
660 | TYPE_OBJFILE (type)); | |
661 | TYPE_TARGET_TYPE (mtype) = type; | |
662 | /* _DOMAIN_TYPE (mtype) = unknown yet */ | |
663 | return (mtype); | |
664 | } | |
665 | ||
666 | /* Create a range type using either a blank type supplied in RESULT_TYPE, | |
667 | or creating a new type, inheriting the objfile from INDEX_TYPE. | |
668 | ||
669 | Indices will be of type INDEX_TYPE, and will range from LOW_BOUND to | |
670 | HIGH_BOUND, inclusive. | |
671 | ||
672 | FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make | |
673 | sure it is TYPE_CODE_UNDEF before we bash it into a range type? */ | |
674 | ||
675 | struct type * | |
676 | create_range_type (struct type *result_type, struct type *index_type, | |
677 | int low_bound, int high_bound) | |
678 | { | |
679 | if (result_type == NULL) | |
680 | { | |
681 | result_type = alloc_type (TYPE_OBJFILE (index_type)); | |
682 | } | |
683 | TYPE_CODE (result_type) = TYPE_CODE_RANGE; | |
684 | TYPE_TARGET_TYPE (result_type) = index_type; | |
685 | if (TYPE_STUB (index_type)) | |
686 | TYPE_FLAGS (result_type) |= TYPE_FLAG_TARGET_STUB; | |
687 | else | |
688 | TYPE_LENGTH (result_type) = TYPE_LENGTH (check_typedef (index_type)); | |
689 | TYPE_NFIELDS (result_type) = 2; | |
690 | TYPE_FIELDS (result_type) = (struct field *) | |
691 | TYPE_ALLOC (result_type, 2 * sizeof (struct field)); | |
692 | memset (TYPE_FIELDS (result_type), 0, 2 * sizeof (struct field)); | |
693 | TYPE_FIELD_BITPOS (result_type, 0) = low_bound; | |
694 | TYPE_FIELD_BITPOS (result_type, 1) = high_bound; | |
695 | TYPE_FIELD_TYPE (result_type, 0) = builtin_type_int; /* FIXME */ | |
696 | TYPE_FIELD_TYPE (result_type, 1) = builtin_type_int; /* FIXME */ | |
697 | ||
698 | if (low_bound >= 0) | |
699 | TYPE_FLAGS (result_type) |= TYPE_FLAG_UNSIGNED; | |
700 | ||
701 | return (result_type); | |
702 | } | |
703 | ||
704 | /* Set *LOWP and *HIGHP to the lower and upper bounds of discrete type TYPE. | |
705 | Return 1 if type is a range type, 0 if it is discrete (and bounds | |
706 | will fit in LONGEST), or -1 otherwise. */ | |
707 | ||
708 | int | |
709 | get_discrete_bounds (struct type *type, LONGEST *lowp, LONGEST *highp) | |
710 | { | |
711 | CHECK_TYPEDEF (type); | |
712 | switch (TYPE_CODE (type)) | |
713 | { | |
714 | case TYPE_CODE_RANGE: | |
715 | *lowp = TYPE_LOW_BOUND (type); | |
716 | *highp = TYPE_HIGH_BOUND (type); | |
717 | return 1; | |
718 | case TYPE_CODE_ENUM: | |
719 | if (TYPE_NFIELDS (type) > 0) | |
720 | { | |
721 | /* The enums may not be sorted by value, so search all | |
722 | entries */ | |
723 | int i; | |
724 | ||
725 | *lowp = *highp = TYPE_FIELD_BITPOS (type, 0); | |
726 | for (i = 0; i < TYPE_NFIELDS (type); i++) | |
727 | { | |
728 | if (TYPE_FIELD_BITPOS (type, i) < *lowp) | |
729 | *lowp = TYPE_FIELD_BITPOS (type, i); | |
730 | if (TYPE_FIELD_BITPOS (type, i) > *highp) | |
731 | *highp = TYPE_FIELD_BITPOS (type, i); | |
732 | } | |
733 | ||
734 | /* Set unsigned indicator if warranted. */ | |
735 | if (*lowp >= 0) | |
736 | { | |
737 | TYPE_FLAGS (type) |= TYPE_FLAG_UNSIGNED; | |
738 | } | |
739 | } | |
740 | else | |
741 | { | |
742 | *lowp = 0; | |
743 | *highp = -1; | |
744 | } | |
745 | return 0; | |
746 | case TYPE_CODE_BOOL: | |
747 | *lowp = 0; | |
748 | *highp = 1; | |
749 | return 0; | |
750 | case TYPE_CODE_INT: | |
751 | if (TYPE_LENGTH (type) > sizeof (LONGEST)) /* Too big */ | |
752 | return -1; | |
753 | if (!TYPE_UNSIGNED (type)) | |
754 | { | |
755 | *lowp = -(1 << (TYPE_LENGTH (type) * TARGET_CHAR_BIT - 1)); | |
756 | *highp = -*lowp - 1; | |
757 | return 0; | |
758 | } | |
759 | /* ... fall through for unsigned ints ... */ | |
760 | case TYPE_CODE_CHAR: | |
761 | *lowp = 0; | |
762 | /* This round-about calculation is to avoid shifting by | |
763 | TYPE_LENGTH (type) * TARGET_CHAR_BIT, which will not work | |
764 | if TYPE_LENGTH (type) == sizeof (LONGEST). */ | |
765 | *highp = 1 << (TYPE_LENGTH (type) * TARGET_CHAR_BIT - 1); | |
766 | *highp = (*highp - 1) | *highp; | |
767 | return 0; | |
768 | default: | |
769 | return -1; | |
770 | } | |
771 | } | |
772 | ||
773 | /* Create an array type using either a blank type supplied in RESULT_TYPE, | |
774 | or creating a new type, inheriting the objfile from RANGE_TYPE. | |
775 | ||
776 | Elements will be of type ELEMENT_TYPE, the indices will be of type | |
777 | RANGE_TYPE. | |
778 | ||
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 an array type? */ | |
781 | ||
782 | struct type * | |
783 | create_array_type (struct type *result_type, struct type *element_type, | |
784 | struct type *range_type) | |
785 | { | |
786 | LONGEST low_bound, high_bound; | |
787 | ||
788 | if (result_type == NULL) | |
789 | { | |
790 | result_type = alloc_type (TYPE_OBJFILE (range_type)); | |
791 | } | |
792 | TYPE_CODE (result_type) = TYPE_CODE_ARRAY; | |
793 | TYPE_TARGET_TYPE (result_type) = element_type; | |
794 | if (get_discrete_bounds (range_type, &low_bound, &high_bound) < 0) | |
795 | low_bound = high_bound = 0; | |
796 | CHECK_TYPEDEF (element_type); | |
797 | TYPE_LENGTH (result_type) = | |
798 | TYPE_LENGTH (element_type) * (high_bound - low_bound + 1); | |
799 | TYPE_NFIELDS (result_type) = 1; | |
800 | TYPE_FIELDS (result_type) = | |
801 | (struct field *) TYPE_ALLOC (result_type, sizeof (struct field)); | |
802 | memset (TYPE_FIELDS (result_type), 0, sizeof (struct field)); | |
803 | TYPE_FIELD_TYPE (result_type, 0) = range_type; | |
804 | TYPE_VPTR_FIELDNO (result_type) = -1; | |
805 | ||
806 | /* TYPE_FLAG_TARGET_STUB will take care of zero length arrays */ | |
807 | if (TYPE_LENGTH (result_type) == 0) | |
808 | TYPE_FLAGS (result_type) |= TYPE_FLAG_TARGET_STUB; | |
809 | ||
810 | return (result_type); | |
811 | } | |
812 | ||
813 | /* Create a string type using either a blank type supplied in RESULT_TYPE, | |
814 | or creating a new type. String types are similar enough to array of | |
815 | char types that we can use create_array_type to build the basic type | |
816 | and then bash it into a string type. | |
817 | ||
818 | For fixed length strings, the range type contains 0 as the lower | |
819 | bound and the length of the string minus one as the upper bound. | |
820 | ||
821 | FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make | |
822 | sure it is TYPE_CODE_UNDEF before we bash it into a string type? */ | |
823 | ||
824 | struct type * | |
825 | create_string_type (struct type *result_type, struct type *range_type) | |
826 | { | |
827 | struct type *string_char_type; | |
828 | ||
829 | string_char_type = language_string_char_type (current_language, | |
830 | current_gdbarch); | |
831 | result_type = create_array_type (result_type, | |
832 | string_char_type, | |
833 | range_type); | |
834 | TYPE_CODE (result_type) = TYPE_CODE_STRING; | |
835 | return (result_type); | |
836 | } | |
837 | ||
838 | struct type * | |
839 | create_set_type (struct type *result_type, struct type *domain_type) | |
840 | { | |
841 | LONGEST low_bound, high_bound, bit_length; | |
842 | if (result_type == NULL) | |
843 | { | |
844 | result_type = alloc_type (TYPE_OBJFILE (domain_type)); | |
845 | } | |
846 | TYPE_CODE (result_type) = TYPE_CODE_SET; | |
847 | TYPE_NFIELDS (result_type) = 1; | |
848 | TYPE_FIELDS (result_type) = (struct field *) | |
849 | TYPE_ALLOC (result_type, 1 * sizeof (struct field)); | |
850 | memset (TYPE_FIELDS (result_type), 0, sizeof (struct field)); | |
851 | ||
852 | if (!TYPE_STUB (domain_type)) | |
853 | { | |
854 | if (get_discrete_bounds (domain_type, &low_bound, &high_bound) < 0) | |
855 | low_bound = high_bound = 0; | |
856 | bit_length = high_bound - low_bound + 1; | |
857 | TYPE_LENGTH (result_type) | |
858 | = (bit_length + TARGET_CHAR_BIT - 1) / TARGET_CHAR_BIT; | |
859 | } | |
860 | TYPE_FIELD_TYPE (result_type, 0) = domain_type; | |
861 | ||
862 | if (low_bound >= 0) | |
863 | TYPE_FLAGS (result_type) |= TYPE_FLAG_UNSIGNED; | |
864 | ||
865 | return (result_type); | |
866 | } | |
867 | ||
868 | void | |
869 | append_flags_type_flag (struct type *type, int bitpos, char *name) | |
870 | { | |
871 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_FLAGS); | |
872 | gdb_assert (bitpos < TYPE_NFIELDS (type)); | |
873 | gdb_assert (bitpos >= 0); | |
874 | ||
875 | if (name) | |
876 | { | |
877 | TYPE_FIELD_NAME (type, bitpos) = xstrdup (name); | |
878 | TYPE_FIELD_BITPOS (type, bitpos) = bitpos; | |
879 | } | |
880 | else | |
881 | { | |
882 | /* Don't show this field to the user. */ | |
883 | TYPE_FIELD_BITPOS (type, bitpos) = -1; | |
884 | } | |
885 | } | |
886 | ||
887 | struct type * | |
888 | init_flags_type (char *name, int length) | |
889 | { | |
890 | int nfields = length * TARGET_CHAR_BIT; | |
891 | struct type *type; | |
892 | ||
893 | type = init_type (TYPE_CODE_FLAGS, length, TYPE_FLAG_UNSIGNED, name, NULL); | |
894 | TYPE_NFIELDS (type) = nfields; | |
895 | TYPE_FIELDS (type) = TYPE_ALLOC (type, nfields * sizeof (struct field)); | |
896 | memset (TYPE_FIELDS (type), 0, nfields * sizeof (struct field)); | |
897 | ||
898 | return type; | |
899 | } | |
900 | ||
901 | /* Construct and return a type of the form: | |
902 | struct NAME { ELT_TYPE ELT_NAME[N]; } | |
903 | We use these types for SIMD registers. For example, the type of | |
904 | the SSE registers on the late x86-family processors is: | |
905 | struct __builtin_v4sf { float f[4]; } | |
906 | built by the function call: | |
907 | init_simd_type ("__builtin_v4sf", builtin_type_float, "f", 4) | |
908 | The type returned is a permanent type, allocated using malloc; it | |
909 | doesn't live in any objfile's obstack. */ | |
910 | static struct type * | |
911 | init_simd_type (char *name, | |
912 | struct type *elt_type, | |
913 | char *elt_name, | |
914 | int n) | |
915 | { | |
916 | struct type *simd_type; | |
917 | struct type *array_type; | |
918 | ||
919 | simd_type = init_composite_type (name, TYPE_CODE_STRUCT); | |
920 | array_type = create_array_type (0, elt_type, | |
921 | create_range_type (0, builtin_type_int, | |
922 | 0, n-1)); | |
923 | append_composite_type_field (simd_type, elt_name, array_type); | |
924 | return simd_type; | |
925 | } | |
926 | ||
927 | static struct type * | |
928 | init_vector_type (struct type *elt_type, int n) | |
929 | { | |
930 | struct type *array_type; | |
931 | ||
932 | array_type = create_array_type (0, elt_type, | |
933 | create_range_type (0, builtin_type_int, | |
934 | 0, n-1)); | |
935 | TYPE_FLAGS (array_type) |= TYPE_FLAG_VECTOR; | |
936 | return array_type; | |
937 | } | |
938 | ||
939 | static struct type * | |
940 | build_builtin_type_vec64 (void) | |
941 | { | |
942 | /* Construct a type for the 64 bit registers. The type we're | |
943 | building is this: */ | |
944 | #if 0 | |
945 | union __gdb_builtin_type_vec64 | |
946 | { | |
947 | int64_t uint64; | |
948 | float v2_float[2]; | |
949 | int32_t v2_int32[2]; | |
950 | int16_t v4_int16[4]; | |
951 | int8_t v8_int8[8]; | |
952 | }; | |
953 | #endif | |
954 | ||
955 | struct type *t; | |
956 | ||
957 | t = init_composite_type ("__gdb_builtin_type_vec64", TYPE_CODE_UNION); | |
958 | append_composite_type_field (t, "uint64", builtin_type_int64); | |
959 | append_composite_type_field (t, "v2_float", builtin_type_v2_float); | |
960 | append_composite_type_field (t, "v2_int32", builtin_type_v2_int32); | |
961 | append_composite_type_field (t, "v4_int16", builtin_type_v4_int16); | |
962 | append_composite_type_field (t, "v8_int8", builtin_type_v8_int8); | |
963 | ||
964 | TYPE_FLAGS (t) |= TYPE_FLAG_VECTOR; | |
965 | TYPE_NAME (t) = "builtin_type_vec64"; | |
966 | return t; | |
967 | } | |
968 | ||
969 | static struct type * | |
970 | build_builtin_type_vec128 (void) | |
971 | { | |
972 | /* Construct a type for the 128 bit registers. The type we're | |
973 | building is this: */ | |
974 | #if 0 | |
975 | union __gdb_builtin_type_vec128 | |
976 | { | |
977 | int128_t uint128; | |
978 | float v4_float[4]; | |
979 | int32_t v4_int32[4]; | |
980 | int16_t v8_int16[8]; | |
981 | int8_t v16_int8[16]; | |
982 | }; | |
983 | #endif | |
984 | ||
985 | struct type *t; | |
986 | ||
987 | t = init_composite_type ("__gdb_builtin_type_vec128", TYPE_CODE_UNION); | |
988 | append_composite_type_field (t, "uint128", builtin_type_int128); | |
989 | append_composite_type_field (t, "v4_float", builtin_type_v4_float); | |
990 | append_composite_type_field (t, "v4_int32", builtin_type_v4_int32); | |
991 | append_composite_type_field (t, "v8_int16", builtin_type_v8_int16); | |
992 | append_composite_type_field (t, "v16_int8", builtin_type_v16_int8); | |
993 | ||
994 | TYPE_FLAGS (t) |= TYPE_FLAG_VECTOR; | |
995 | TYPE_NAME (t) = "builtin_type_vec128"; | |
996 | return t; | |
997 | } | |
998 | ||
999 | /* Smash TYPE to be a type of pointers to members of DOMAIN with type | |
1000 | TO_TYPE. A member pointer is a wierd thing -- it amounts to a | |
1001 | typed offset into a struct, e.g. "an int at offset 8". A MEMBER | |
1002 | TYPE doesn't include the offset (that's the value of the MEMBER | |
1003 | itself), but does include the structure type into which it points | |
1004 | (for some reason). | |
1005 | ||
1006 | When "smashing" the type, we preserve the objfile that the | |
1007 | old type pointed to, since we aren't changing where the type is actually | |
1008 | allocated. */ | |
1009 | ||
1010 | void | |
1011 | smash_to_memberptr_type (struct type *type, struct type *domain, | |
1012 | struct type *to_type) | |
1013 | { | |
1014 | struct objfile *objfile; | |
1015 | ||
1016 | objfile = TYPE_OBJFILE (type); | |
1017 | ||
1018 | smash_type (type); | |
1019 | TYPE_OBJFILE (type) = objfile; | |
1020 | TYPE_TARGET_TYPE (type) = to_type; | |
1021 | TYPE_DOMAIN_TYPE (type) = domain; | |
1022 | /* Assume that a data member pointer is the same size as a normal | |
1023 | pointer. */ | |
1024 | TYPE_LENGTH (type) = TARGET_PTR_BIT / TARGET_CHAR_BIT; | |
1025 | TYPE_CODE (type) = TYPE_CODE_MEMBERPTR; | |
1026 | } | |
1027 | ||
1028 | /* Smash TYPE to be a type of method of DOMAIN with type TO_TYPE. | |
1029 | METHOD just means `function that gets an extra "this" argument'. | |
1030 | ||
1031 | When "smashing" the type, we preserve the objfile that the | |
1032 | old type pointed to, since we aren't changing where the type is actually | |
1033 | allocated. */ | |
1034 | ||
1035 | void | |
1036 | smash_to_method_type (struct type *type, struct type *domain, | |
1037 | struct type *to_type, struct field *args, | |
1038 | int nargs, int varargs) | |
1039 | { | |
1040 | struct objfile *objfile; | |
1041 | ||
1042 | objfile = TYPE_OBJFILE (type); | |
1043 | ||
1044 | smash_type (type); | |
1045 | TYPE_OBJFILE (type) = objfile; | |
1046 | TYPE_TARGET_TYPE (type) = to_type; | |
1047 | TYPE_DOMAIN_TYPE (type) = domain; | |
1048 | TYPE_FIELDS (type) = args; | |
1049 | TYPE_NFIELDS (type) = nargs; | |
1050 | if (varargs) | |
1051 | TYPE_FLAGS (type) |= TYPE_FLAG_VARARGS; | |
1052 | TYPE_LENGTH (type) = 1; /* In practice, this is never needed. */ | |
1053 | TYPE_CODE (type) = TYPE_CODE_METHOD; | |
1054 | } | |
1055 | ||
1056 | /* Return a typename for a struct/union/enum type without "struct ", | |
1057 | "union ", or "enum ". If the type has a NULL name, return NULL. */ | |
1058 | ||
1059 | char * | |
1060 | type_name_no_tag (const struct type *type) | |
1061 | { | |
1062 | if (TYPE_TAG_NAME (type) != NULL) | |
1063 | return TYPE_TAG_NAME (type); | |
1064 | ||
1065 | /* Is there code which expects this to return the name if there is no | |
1066 | tag name? My guess is that this is mainly used for C++ in cases where | |
1067 | the two will always be the same. */ | |
1068 | return TYPE_NAME (type); | |
1069 | } | |
1070 | ||
1071 | /* Lookup a typedef or primitive type named NAME, | |
1072 | visible in lexical block BLOCK. | |
1073 | If NOERR is nonzero, return zero if NAME is not suitably defined. */ | |
1074 | ||
1075 | struct type * | |
1076 | lookup_typename (char *name, struct block *block, int noerr) | |
1077 | { | |
1078 | struct symbol *sym; | |
1079 | struct type *tmp; | |
1080 | ||
1081 | sym = lookup_symbol (name, block, VAR_DOMAIN, 0, (struct symtab **) NULL); | |
1082 | if (sym == NULL || SYMBOL_CLASS (sym) != LOC_TYPEDEF) | |
1083 | { | |
1084 | tmp = language_lookup_primitive_type_by_name (current_language, | |
1085 | current_gdbarch, | |
1086 | name); | |
1087 | if (tmp) | |
1088 | { | |
1089 | return (tmp); | |
1090 | } | |
1091 | else if (!tmp && noerr) | |
1092 | { | |
1093 | return (NULL); | |
1094 | } | |
1095 | else | |
1096 | { | |
1097 | error (_("No type named %s."), name); | |
1098 | } | |
1099 | } | |
1100 | return (SYMBOL_TYPE (sym)); | |
1101 | } | |
1102 | ||
1103 | struct type * | |
1104 | lookup_unsigned_typename (char *name) | |
1105 | { | |
1106 | char *uns = alloca (strlen (name) + 10); | |
1107 | ||
1108 | strcpy (uns, "unsigned "); | |
1109 | strcpy (uns + 9, name); | |
1110 | return (lookup_typename (uns, (struct block *) NULL, 0)); | |
1111 | } | |
1112 | ||
1113 | struct type * | |
1114 | lookup_signed_typename (char *name) | |
1115 | { | |
1116 | struct type *t; | |
1117 | char *uns = alloca (strlen (name) + 8); | |
1118 | ||
1119 | strcpy (uns, "signed "); | |
1120 | strcpy (uns + 7, name); | |
1121 | t = lookup_typename (uns, (struct block *) NULL, 1); | |
1122 | /* If we don't find "signed FOO" just try again with plain "FOO". */ | |
1123 | if (t != NULL) | |
1124 | return t; | |
1125 | return lookup_typename (name, (struct block *) NULL, 0); | |
1126 | } | |
1127 | ||
1128 | /* Lookup a structure type named "struct NAME", | |
1129 | visible in lexical block BLOCK. */ | |
1130 | ||
1131 | struct type * | |
1132 | lookup_struct (char *name, struct block *block) | |
1133 | { | |
1134 | struct symbol *sym; | |
1135 | ||
1136 | sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0, | |
1137 | (struct symtab **) NULL); | |
1138 | ||
1139 | if (sym == NULL) | |
1140 | { | |
1141 | error (_("No struct type named %s."), name); | |
1142 | } | |
1143 | if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_STRUCT) | |
1144 | { | |
1145 | error (_("This context has class, union or enum %s, not a struct."), name); | |
1146 | } | |
1147 | return (SYMBOL_TYPE (sym)); | |
1148 | } | |
1149 | ||
1150 | /* Lookup a union type named "union NAME", | |
1151 | visible in lexical block BLOCK. */ | |
1152 | ||
1153 | struct type * | |
1154 | lookup_union (char *name, struct block *block) | |
1155 | { | |
1156 | struct symbol *sym; | |
1157 | struct type *t; | |
1158 | ||
1159 | sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0, | |
1160 | (struct symtab **) NULL); | |
1161 | ||
1162 | if (sym == NULL) | |
1163 | error (_("No union type named %s."), name); | |
1164 | ||
1165 | t = SYMBOL_TYPE (sym); | |
1166 | ||
1167 | if (TYPE_CODE (t) == TYPE_CODE_UNION) | |
1168 | return (t); | |
1169 | ||
1170 | /* C++ unions may come out with TYPE_CODE_CLASS, but we look at | |
1171 | * a further "declared_type" field to discover it is really a union. | |
1172 | */ | |
1173 | if (HAVE_CPLUS_STRUCT (t)) | |
1174 | if (TYPE_DECLARED_TYPE (t) == DECLARED_TYPE_UNION) | |
1175 | return (t); | |
1176 | ||
1177 | /* If we get here, it's not a union */ | |
1178 | error (_("This context has class, struct or enum %s, not a union."), name); | |
1179 | } | |
1180 | ||
1181 | ||
1182 | /* Lookup an enum type named "enum NAME", | |
1183 | visible in lexical block BLOCK. */ | |
1184 | ||
1185 | struct type * | |
1186 | lookup_enum (char *name, struct block *block) | |
1187 | { | |
1188 | struct symbol *sym; | |
1189 | ||
1190 | sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0, | |
1191 | (struct symtab **) NULL); | |
1192 | if (sym == NULL) | |
1193 | { | |
1194 | error (_("No enum type named %s."), name); | |
1195 | } | |
1196 | if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_ENUM) | |
1197 | { | |
1198 | error (_("This context has class, struct or union %s, not an enum."), name); | |
1199 | } | |
1200 | return (SYMBOL_TYPE (sym)); | |
1201 | } | |
1202 | ||
1203 | /* Lookup a template type named "template NAME<TYPE>", | |
1204 | visible in lexical block BLOCK. */ | |
1205 | ||
1206 | struct type * | |
1207 | lookup_template_type (char *name, struct type *type, struct block *block) | |
1208 | { | |
1209 | struct symbol *sym; | |
1210 | char *nam = (char *) alloca (strlen (name) + strlen (TYPE_NAME (type)) + 4); | |
1211 | strcpy (nam, name); | |
1212 | strcat (nam, "<"); | |
1213 | strcat (nam, TYPE_NAME (type)); | |
1214 | strcat (nam, " >"); /* FIXME, extra space still introduced in gcc? */ | |
1215 | ||
1216 | sym = lookup_symbol (nam, block, VAR_DOMAIN, 0, (struct symtab **) NULL); | |
1217 | ||
1218 | if (sym == NULL) | |
1219 | { | |
1220 | error (_("No template type named %s."), name); | |
1221 | } | |
1222 | if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_STRUCT) | |
1223 | { | |
1224 | error (_("This context has class, union or enum %s, not a struct."), name); | |
1225 | } | |
1226 | return (SYMBOL_TYPE (sym)); | |
1227 | } | |
1228 | ||
1229 | /* Given a type TYPE, lookup the type of the component of type named NAME. | |
1230 | ||
1231 | TYPE can be either a struct or union, or a pointer or reference to a struct or | |
1232 | union. If it is a pointer or reference, its target type is automatically used. | |
1233 | Thus '.' and '->' are interchangable, as specified for the definitions of the | |
1234 | expression element types STRUCTOP_STRUCT and STRUCTOP_PTR. | |
1235 | ||
1236 | If NOERR is nonzero, return zero if NAME is not suitably defined. | |
1237 | If NAME is the name of a baseclass type, return that type. */ | |
1238 | ||
1239 | struct type * | |
1240 | lookup_struct_elt_type (struct type *type, char *name, int noerr) | |
1241 | { | |
1242 | int i; | |
1243 | ||
1244 | for (;;) | |
1245 | { | |
1246 | CHECK_TYPEDEF (type); | |
1247 | if (TYPE_CODE (type) != TYPE_CODE_PTR | |
1248 | && TYPE_CODE (type) != TYPE_CODE_REF) | |
1249 | break; | |
1250 | type = TYPE_TARGET_TYPE (type); | |
1251 | } | |
1252 | ||
1253 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT && | |
1254 | TYPE_CODE (type) != TYPE_CODE_UNION) | |
1255 | { | |
1256 | target_terminal_ours (); | |
1257 | gdb_flush (gdb_stdout); | |
1258 | fprintf_unfiltered (gdb_stderr, "Type "); | |
1259 | type_print (type, "", gdb_stderr, -1); | |
1260 | error (_(" is not a structure or union type.")); | |
1261 | } | |
1262 | ||
1263 | #if 0 | |
1264 | /* FIXME: This change put in by Michael seems incorrect for the case where | |
1265 | the structure tag name is the same as the member name. I.E. when doing | |
1266 | "ptype bell->bar" for "struct foo { int bar; int foo; } bell;" | |
1267 | Disabled by fnf. */ | |
1268 | { | |
1269 | char *typename; | |
1270 | ||
1271 | typename = type_name_no_tag (type); | |
1272 | if (typename != NULL && strcmp (typename, name) == 0) | |
1273 | return type; | |
1274 | } | |
1275 | #endif | |
1276 | ||
1277 | for (i = TYPE_NFIELDS (type) - 1; i >= TYPE_N_BASECLASSES (type); i--) | |
1278 | { | |
1279 | char *t_field_name = TYPE_FIELD_NAME (type, i); | |
1280 | ||
1281 | if (t_field_name && (strcmp_iw (t_field_name, name) == 0)) | |
1282 | { | |
1283 | return TYPE_FIELD_TYPE (type, i); | |
1284 | } | |
1285 | } | |
1286 | ||
1287 | /* OK, it's not in this class. Recursively check the baseclasses. */ | |
1288 | for (i = TYPE_N_BASECLASSES (type) - 1; i >= 0; i--) | |
1289 | { | |
1290 | struct type *t; | |
1291 | ||
1292 | t = lookup_struct_elt_type (TYPE_BASECLASS (type, i), name, 1); | |
1293 | if (t != NULL) | |
1294 | { | |
1295 | return t; | |
1296 | } | |
1297 | } | |
1298 | ||
1299 | if (noerr) | |
1300 | { | |
1301 | return NULL; | |
1302 | } | |
1303 | ||
1304 | target_terminal_ours (); | |
1305 | gdb_flush (gdb_stdout); | |
1306 | fprintf_unfiltered (gdb_stderr, "Type "); | |
1307 | type_print (type, "", gdb_stderr, -1); | |
1308 | fprintf_unfiltered (gdb_stderr, " has no component named "); | |
1309 | fputs_filtered (name, gdb_stderr); | |
1310 | error ((".")); | |
1311 | return (struct type *) -1; /* For lint */ | |
1312 | } | |
1313 | ||
1314 | /* If possible, make the vptr_fieldno and vptr_basetype fields of TYPE | |
1315 | valid. Callers should be aware that in some cases (for example, | |
1316 | the type or one of its baseclasses is a stub type and we are | |
1317 | debugging a .o file), this function will not be able to find the virtual | |
1318 | function table pointer, and vptr_fieldno will remain -1 and vptr_basetype | |
1319 | will remain NULL. */ | |
1320 | ||
1321 | void | |
1322 | fill_in_vptr_fieldno (struct type *type) | |
1323 | { | |
1324 | CHECK_TYPEDEF (type); | |
1325 | ||
1326 | if (TYPE_VPTR_FIELDNO (type) < 0) | |
1327 | { | |
1328 | int i; | |
1329 | ||
1330 | /* We must start at zero in case the first (and only) baseclass is | |
1331 | virtual (and hence we cannot share the table pointer). */ | |
1332 | for (i = 0; i < TYPE_N_BASECLASSES (type); i++) | |
1333 | { | |
1334 | struct type *baseclass = check_typedef (TYPE_BASECLASS (type, i)); | |
1335 | fill_in_vptr_fieldno (baseclass); | |
1336 | if (TYPE_VPTR_FIELDNO (baseclass) >= 0) | |
1337 | { | |
1338 | TYPE_VPTR_FIELDNO (type) = TYPE_VPTR_FIELDNO (baseclass); | |
1339 | TYPE_VPTR_BASETYPE (type) = TYPE_VPTR_BASETYPE (baseclass); | |
1340 | break; | |
1341 | } | |
1342 | } | |
1343 | } | |
1344 | } | |
1345 | ||
1346 | /* Find the method and field indices for the destructor in class type T. | |
1347 | Return 1 if the destructor was found, otherwise, return 0. */ | |
1348 | ||
1349 | int | |
1350 | get_destructor_fn_field (struct type *t, int *method_indexp, int *field_indexp) | |
1351 | { | |
1352 | int i; | |
1353 | ||
1354 | for (i = 0; i < TYPE_NFN_FIELDS (t); i++) | |
1355 | { | |
1356 | int j; | |
1357 | struct fn_field *f = TYPE_FN_FIELDLIST1 (t, i); | |
1358 | ||
1359 | for (j = 0; j < TYPE_FN_FIELDLIST_LENGTH (t, i); j++) | |
1360 | { | |
1361 | if (is_destructor_name (TYPE_FN_FIELD_PHYSNAME (f, j)) != 0) | |
1362 | { | |
1363 | *method_indexp = i; | |
1364 | *field_indexp = j; | |
1365 | return 1; | |
1366 | } | |
1367 | } | |
1368 | } | |
1369 | return 0; | |
1370 | } | |
1371 | ||
1372 | static void | |
1373 | stub_noname_complaint (void) | |
1374 | { | |
1375 | complaint (&symfile_complaints, _("stub type has NULL name")); | |
1376 | } | |
1377 | ||
1378 | /* Added by Bryan Boreham, Kewill, Sun Sep 17 18:07:17 1989. | |
1379 | ||
1380 | If this is a stubbed struct (i.e. declared as struct foo *), see if | |
1381 | we can find a full definition in some other file. If so, copy this | |
1382 | definition, so we can use it in future. There used to be a comment (but | |
1383 | not any code) that if we don't find a full definition, we'd set a flag | |
1384 | so we don't spend time in the future checking the same type. That would | |
1385 | be a mistake, though--we might load in more symbols which contain a | |
1386 | full definition for the type. | |
1387 | ||
1388 | This used to be coded as a macro, but I don't think it is called | |
1389 | often enough to merit such treatment. */ | |
1390 | ||
1391 | /* Find the real type of TYPE. This function returns the real type, after | |
1392 | removing all layers of typedefs and completing opaque or stub types. | |
1393 | Completion changes the TYPE argument, but stripping of typedefs does | |
1394 | not. */ | |
1395 | ||
1396 | struct type * | |
1397 | check_typedef (struct type *type) | |
1398 | { | |
1399 | struct type *orig_type = type; | |
1400 | int is_const, is_volatile; | |
1401 | ||
1402 | while (TYPE_CODE (type) == TYPE_CODE_TYPEDEF) | |
1403 | { | |
1404 | if (!TYPE_TARGET_TYPE (type)) | |
1405 | { | |
1406 | char *name; | |
1407 | struct symbol *sym; | |
1408 | ||
1409 | /* It is dangerous to call lookup_symbol if we are currently | |
1410 | reading a symtab. Infinite recursion is one danger. */ | |
1411 | if (currently_reading_symtab) | |
1412 | return type; | |
1413 | ||
1414 | name = type_name_no_tag (type); | |
1415 | /* FIXME: shouldn't we separately check the TYPE_NAME and the | |
1416 | TYPE_TAG_NAME, and look in STRUCT_DOMAIN and/or VAR_DOMAIN | |
1417 | as appropriate? (this code was written before TYPE_NAME and | |
1418 | TYPE_TAG_NAME were separate). */ | |
1419 | if (name == NULL) | |
1420 | { | |
1421 | stub_noname_complaint (); | |
1422 | return type; | |
1423 | } | |
1424 | sym = lookup_symbol (name, 0, STRUCT_DOMAIN, 0, | |
1425 | (struct symtab **) NULL); | |
1426 | if (sym) | |
1427 | TYPE_TARGET_TYPE (type) = SYMBOL_TYPE (sym); | |
1428 | else | |
1429 | TYPE_TARGET_TYPE (type) = alloc_type (NULL); /* TYPE_CODE_UNDEF */ | |
1430 | } | |
1431 | type = TYPE_TARGET_TYPE (type); | |
1432 | } | |
1433 | ||
1434 | is_const = TYPE_CONST (type); | |
1435 | is_volatile = TYPE_VOLATILE (type); | |
1436 | ||
1437 | /* If this is a struct/class/union with no fields, then check whether a | |
1438 | full definition exists somewhere else. This is for systems where a | |
1439 | type definition with no fields is issued for such types, instead of | |
1440 | identifying them as stub types in the first place */ | |
1441 | ||
1442 | if (TYPE_IS_OPAQUE (type) && opaque_type_resolution && !currently_reading_symtab) | |
1443 | { | |
1444 | char *name = type_name_no_tag (type); | |
1445 | struct type *newtype; | |
1446 | if (name == NULL) | |
1447 | { | |
1448 | stub_noname_complaint (); | |
1449 | return type; | |
1450 | } | |
1451 | newtype = lookup_transparent_type (name); | |
1452 | ||
1453 | if (newtype) | |
1454 | { | |
1455 | /* If the resolved type and the stub are in the same objfile, | |
1456 | then replace the stub type with the real deal. But if | |
1457 | they're in separate objfiles, leave the stub alone; we'll | |
1458 | just look up the transparent type every time we call | |
1459 | check_typedef. We can't create pointers between types | |
1460 | allocated to different objfiles, since they may have | |
1461 | different lifetimes. Trying to copy NEWTYPE over to TYPE's | |
1462 | objfile is pointless, too, since you'll have to move over any | |
1463 | other types NEWTYPE refers to, which could be an unbounded | |
1464 | amount of stuff. */ | |
1465 | if (TYPE_OBJFILE (newtype) == TYPE_OBJFILE (type)) | |
1466 | make_cv_type (is_const, is_volatile, newtype, &type); | |
1467 | else | |
1468 | type = newtype; | |
1469 | } | |
1470 | } | |
1471 | /* Otherwise, rely on the stub flag being set for opaque/stubbed types */ | |
1472 | else if (TYPE_STUB (type) && !currently_reading_symtab) | |
1473 | { | |
1474 | char *name = type_name_no_tag (type); | |
1475 | /* FIXME: shouldn't we separately check the TYPE_NAME and the | |
1476 | TYPE_TAG_NAME, and look in STRUCT_DOMAIN and/or VAR_DOMAIN | |
1477 | as appropriate? (this code was written before TYPE_NAME and | |
1478 | TYPE_TAG_NAME were separate). */ | |
1479 | struct symbol *sym; | |
1480 | if (name == NULL) | |
1481 | { | |
1482 | stub_noname_complaint (); | |
1483 | return type; | |
1484 | } | |
1485 | sym = lookup_symbol (name, 0, STRUCT_DOMAIN, 0, (struct symtab **) NULL); | |
1486 | if (sym) | |
1487 | make_cv_type (is_const, is_volatile, SYMBOL_TYPE (sym), &type); | |
1488 | } | |
1489 | ||
1490 | if (TYPE_TARGET_STUB (type)) | |
1491 | { | |
1492 | struct type *range_type; | |
1493 | struct type *target_type = check_typedef (TYPE_TARGET_TYPE (type)); | |
1494 | ||
1495 | if (TYPE_STUB (target_type) || TYPE_TARGET_STUB (target_type)) | |
1496 | { | |
1497 | } | |
1498 | else if (TYPE_CODE (type) == TYPE_CODE_ARRAY | |
1499 | && TYPE_NFIELDS (type) == 1 | |
1500 | && (TYPE_CODE (range_type = TYPE_FIELD_TYPE (type, 0)) | |
1501 | == TYPE_CODE_RANGE)) | |
1502 | { | |
1503 | /* Now recompute the length of the array type, based on its | |
1504 | number of elements and the target type's length. */ | |
1505 | TYPE_LENGTH (type) = | |
1506 | ((TYPE_FIELD_BITPOS (range_type, 1) | |
1507 | - TYPE_FIELD_BITPOS (range_type, 0) | |
1508 | + 1) | |
1509 | * TYPE_LENGTH (target_type)); | |
1510 | TYPE_FLAGS (type) &= ~TYPE_FLAG_TARGET_STUB; | |
1511 | } | |
1512 | else if (TYPE_CODE (type) == TYPE_CODE_RANGE) | |
1513 | { | |
1514 | TYPE_LENGTH (type) = TYPE_LENGTH (target_type); | |
1515 | TYPE_FLAGS (type) &= ~TYPE_FLAG_TARGET_STUB; | |
1516 | } | |
1517 | } | |
1518 | /* Cache TYPE_LENGTH for future use. */ | |
1519 | TYPE_LENGTH (orig_type) = TYPE_LENGTH (type); | |
1520 | return type; | |
1521 | } | |
1522 | ||
1523 | /* Parse a type expression in the string [P..P+LENGTH). If an error occurs, | |
1524 | silently return builtin_type_void. */ | |
1525 | ||
1526 | static struct type * | |
1527 | safe_parse_type (char *p, int length) | |
1528 | { | |
1529 | struct ui_file *saved_gdb_stderr; | |
1530 | struct type *type; | |
1531 | ||
1532 | /* Suppress error messages. */ | |
1533 | saved_gdb_stderr = gdb_stderr; | |
1534 | gdb_stderr = ui_file_new (); | |
1535 | ||
1536 | /* Call parse_and_eval_type() without fear of longjmp()s. */ | |
1537 | if (!gdb_parse_and_eval_type (p, length, &type)) | |
1538 | type = builtin_type_void; | |
1539 | ||
1540 | /* Stop suppressing error messages. */ | |
1541 | ui_file_delete (gdb_stderr); | |
1542 | gdb_stderr = saved_gdb_stderr; | |
1543 | ||
1544 | return type; | |
1545 | } | |
1546 | ||
1547 | /* Ugly hack to convert method stubs into method types. | |
1548 | ||
1549 | He ain't kiddin'. This demangles the name of the method into a string | |
1550 | including argument types, parses out each argument type, generates | |
1551 | a string casting a zero to that type, evaluates the string, and stuffs | |
1552 | the resulting type into an argtype vector!!! Then it knows the type | |
1553 | of the whole function (including argument types for overloading), | |
1554 | which info used to be in the stab's but was removed to hack back | |
1555 | the space required for them. */ | |
1556 | ||
1557 | static void | |
1558 | check_stub_method (struct type *type, int method_id, int signature_id) | |
1559 | { | |
1560 | struct fn_field *f; | |
1561 | char *mangled_name = gdb_mangle_name (type, method_id, signature_id); | |
1562 | char *demangled_name = cplus_demangle (mangled_name, | |
1563 | DMGL_PARAMS | DMGL_ANSI); | |
1564 | char *argtypetext, *p; | |
1565 | int depth = 0, argcount = 1; | |
1566 | struct field *argtypes; | |
1567 | struct type *mtype; | |
1568 | ||
1569 | /* Make sure we got back a function string that we can use. */ | |
1570 | if (demangled_name) | |
1571 | p = strchr (demangled_name, '('); | |
1572 | else | |
1573 | p = NULL; | |
1574 | ||
1575 | if (demangled_name == NULL || p == NULL) | |
1576 | error (_("Internal: Cannot demangle mangled name `%s'."), mangled_name); | |
1577 | ||
1578 | /* Now, read in the parameters that define this type. */ | |
1579 | p += 1; | |
1580 | argtypetext = p; | |
1581 | while (*p) | |
1582 | { | |
1583 | if (*p == '(' || *p == '<') | |
1584 | { | |
1585 | depth += 1; | |
1586 | } | |
1587 | else if (*p == ')' || *p == '>') | |
1588 | { | |
1589 | depth -= 1; | |
1590 | } | |
1591 | else if (*p == ',' && depth == 0) | |
1592 | { | |
1593 | argcount += 1; | |
1594 | } | |
1595 | ||
1596 | p += 1; | |
1597 | } | |
1598 | ||
1599 | /* If we read one argument and it was ``void'', don't count it. */ | |
1600 | if (strncmp (argtypetext, "(void)", 6) == 0) | |
1601 | argcount -= 1; | |
1602 | ||
1603 | /* We need one extra slot, for the THIS pointer. */ | |
1604 | ||
1605 | argtypes = (struct field *) | |
1606 | TYPE_ALLOC (type, (argcount + 1) * sizeof (struct field)); | |
1607 | p = argtypetext; | |
1608 | ||
1609 | /* Add THIS pointer for non-static methods. */ | |
1610 | f = TYPE_FN_FIELDLIST1 (type, method_id); | |
1611 | if (TYPE_FN_FIELD_STATIC_P (f, signature_id)) | |
1612 | argcount = 0; | |
1613 | else | |
1614 | { | |
1615 | argtypes[0].type = lookup_pointer_type (type); | |
1616 | argcount = 1; | |
1617 | } | |
1618 | ||
1619 | if (*p != ')') /* () means no args, skip while */ | |
1620 | { | |
1621 | depth = 0; | |
1622 | while (*p) | |
1623 | { | |
1624 | if (depth <= 0 && (*p == ',' || *p == ')')) | |
1625 | { | |
1626 | /* Avoid parsing of ellipsis, they will be handled below. | |
1627 | Also avoid ``void'' as above. */ | |
1628 | if (strncmp (argtypetext, "...", p - argtypetext) != 0 | |
1629 | && strncmp (argtypetext, "void", p - argtypetext) != 0) | |
1630 | { | |
1631 | argtypes[argcount].type = | |
1632 | safe_parse_type (argtypetext, p - argtypetext); | |
1633 | argcount += 1; | |
1634 | } | |
1635 | argtypetext = p + 1; | |
1636 | } | |
1637 | ||
1638 | if (*p == '(' || *p == '<') | |
1639 | { | |
1640 | depth += 1; | |
1641 | } | |
1642 | else if (*p == ')' || *p == '>') | |
1643 | { | |
1644 | depth -= 1; | |
1645 | } | |
1646 | ||
1647 | p += 1; | |
1648 | } | |
1649 | } | |
1650 | ||
1651 | TYPE_FN_FIELD_PHYSNAME (f, signature_id) = mangled_name; | |
1652 | ||
1653 | /* Now update the old "stub" type into a real type. */ | |
1654 | mtype = TYPE_FN_FIELD_TYPE (f, signature_id); | |
1655 | TYPE_DOMAIN_TYPE (mtype) = type; | |
1656 | TYPE_FIELDS (mtype) = argtypes; | |
1657 | TYPE_NFIELDS (mtype) = argcount; | |
1658 | TYPE_FLAGS (mtype) &= ~TYPE_FLAG_STUB; | |
1659 | TYPE_FN_FIELD_STUB (f, signature_id) = 0; | |
1660 | if (p[-2] == '.') | |
1661 | TYPE_FLAGS (mtype) |= TYPE_FLAG_VARARGS; | |
1662 | ||
1663 | xfree (demangled_name); | |
1664 | } | |
1665 | ||
1666 | /* This is the external interface to check_stub_method, above. This function | |
1667 | unstubs all of the signatures for TYPE's METHOD_ID method name. After | |
1668 | calling this function TYPE_FN_FIELD_STUB will be cleared for each signature | |
1669 | and TYPE_FN_FIELDLIST_NAME will be correct. | |
1670 | ||
1671 | This function unfortunately can not die until stabs do. */ | |
1672 | ||
1673 | void | |
1674 | check_stub_method_group (struct type *type, int method_id) | |
1675 | { | |
1676 | int len = TYPE_FN_FIELDLIST_LENGTH (type, method_id); | |
1677 | struct fn_field *f = TYPE_FN_FIELDLIST1 (type, method_id); | |
1678 | int j, found_stub = 0; | |
1679 | ||
1680 | for (j = 0; j < len; j++) | |
1681 | if (TYPE_FN_FIELD_STUB (f, j)) | |
1682 | { | |
1683 | found_stub = 1; | |
1684 | check_stub_method (type, method_id, j); | |
1685 | } | |
1686 | ||
1687 | /* GNU v3 methods with incorrect names were corrected when we read in | |
1688 | type information, because it was cheaper to do it then. The only GNU v2 | |
1689 | methods with incorrect method names are operators and destructors; | |
1690 | destructors were also corrected when we read in type information. | |
1691 | ||
1692 | Therefore the only thing we need to handle here are v2 operator | |
1693 | names. */ | |
1694 | if (found_stub && strncmp (TYPE_FN_FIELD_PHYSNAME (f, 0), "_Z", 2) != 0) | |
1695 | { | |
1696 | int ret; | |
1697 | char dem_opname[256]; | |
1698 | ||
1699 | ret = cplus_demangle_opname (TYPE_FN_FIELDLIST_NAME (type, method_id), | |
1700 | dem_opname, DMGL_ANSI); | |
1701 | if (!ret) | |
1702 | ret = cplus_demangle_opname (TYPE_FN_FIELDLIST_NAME (type, method_id), | |
1703 | dem_opname, 0); | |
1704 | if (ret) | |
1705 | TYPE_FN_FIELDLIST_NAME (type, method_id) = xstrdup (dem_opname); | |
1706 | } | |
1707 | } | |
1708 | ||
1709 | const struct cplus_struct_type cplus_struct_default; | |
1710 | ||
1711 | void | |
1712 | allocate_cplus_struct_type (struct type *type) | |
1713 | { | |
1714 | if (!HAVE_CPLUS_STRUCT (type)) | |
1715 | { | |
1716 | TYPE_CPLUS_SPECIFIC (type) = (struct cplus_struct_type *) | |
1717 | TYPE_ALLOC (type, sizeof (struct cplus_struct_type)); | |
1718 | *(TYPE_CPLUS_SPECIFIC (type)) = cplus_struct_default; | |
1719 | } | |
1720 | } | |
1721 | ||
1722 | /* Helper function to initialize the standard scalar types. | |
1723 | ||
1724 | If NAME is non-NULL and OBJFILE is non-NULL, then we make a copy | |
1725 | of the string pointed to by name in the objfile_obstack for that objfile, | |
1726 | and initialize the type name to that copy. There are places (mipsread.c | |
1727 | in particular, where init_type is called with a NULL value for NAME). */ | |
1728 | ||
1729 | struct type * | |
1730 | init_type (enum type_code code, int length, int flags, char *name, | |
1731 | struct objfile *objfile) | |
1732 | { | |
1733 | struct type *type; | |
1734 | ||
1735 | type = alloc_type (objfile); | |
1736 | TYPE_CODE (type) = code; | |
1737 | TYPE_LENGTH (type) = length; | |
1738 | TYPE_FLAGS (type) |= flags; | |
1739 | if ((name != NULL) && (objfile != NULL)) | |
1740 | { | |
1741 | TYPE_NAME (type) = | |
1742 | obsavestring (name, strlen (name), &objfile->objfile_obstack); | |
1743 | } | |
1744 | else | |
1745 | { | |
1746 | TYPE_NAME (type) = name; | |
1747 | } | |
1748 | ||
1749 | /* C++ fancies. */ | |
1750 | ||
1751 | if (name && strcmp (name, "char") == 0) | |
1752 | TYPE_FLAGS (type) |= TYPE_FLAG_NOSIGN; | |
1753 | ||
1754 | if (code == TYPE_CODE_STRUCT || code == TYPE_CODE_UNION | |
1755 | || code == TYPE_CODE_NAMESPACE) | |
1756 | { | |
1757 | INIT_CPLUS_SPECIFIC (type); | |
1758 | } | |
1759 | return (type); | |
1760 | } | |
1761 | ||
1762 | /* Helper function. Create an empty composite type. */ | |
1763 | ||
1764 | struct type * | |
1765 | init_composite_type (char *name, enum type_code code) | |
1766 | { | |
1767 | struct type *t; | |
1768 | gdb_assert (code == TYPE_CODE_STRUCT | |
1769 | || code == TYPE_CODE_UNION); | |
1770 | t = init_type (code, 0, 0, NULL, NULL); | |
1771 | TYPE_TAG_NAME (t) = name; | |
1772 | return t; | |
1773 | } | |
1774 | ||
1775 | /* Helper function. Append a field to a composite type. */ | |
1776 | ||
1777 | void | |
1778 | append_composite_type_field (struct type *t, char *name, struct type *field) | |
1779 | { | |
1780 | struct field *f; | |
1781 | TYPE_NFIELDS (t) = TYPE_NFIELDS (t) + 1; | |
1782 | TYPE_FIELDS (t) = xrealloc (TYPE_FIELDS (t), | |
1783 | sizeof (struct field) * TYPE_NFIELDS (t)); | |
1784 | f = &(TYPE_FIELDS (t)[TYPE_NFIELDS (t) - 1]); | |
1785 | memset (f, 0, sizeof f[0]); | |
1786 | FIELD_TYPE (f[0]) = field; | |
1787 | FIELD_NAME (f[0]) = name; | |
1788 | if (TYPE_CODE (t) == TYPE_CODE_UNION) | |
1789 | { | |
1790 | if (TYPE_LENGTH (t) < TYPE_LENGTH (field)) | |
1791 | TYPE_LENGTH (t) = TYPE_LENGTH (field); | |
1792 | } | |
1793 | else if (TYPE_CODE (t) == TYPE_CODE_STRUCT) | |
1794 | { | |
1795 | TYPE_LENGTH (t) = TYPE_LENGTH (t) + TYPE_LENGTH (field); | |
1796 | if (TYPE_NFIELDS (t) > 1) | |
1797 | { | |
1798 | FIELD_BITPOS (f[0]) = (FIELD_BITPOS (f[-1]) | |
1799 | + TYPE_LENGTH (field) * TARGET_CHAR_BIT); | |
1800 | } | |
1801 | } | |
1802 | } | |
1803 | ||
1804 | /* Look up a fundamental type for the specified objfile. | |
1805 | May need to construct such a type if this is the first use. | |
1806 | ||
1807 | Some object file formats (ELF, COFF, etc) do not define fundamental | |
1808 | types such as "int" or "double". Others (stabs for example), do | |
1809 | define fundamental types. | |
1810 | ||
1811 | For the formats which don't provide fundamental types, gdb can create | |
1812 | such types, using defaults reasonable for the current language and | |
1813 | the current target machine. | |
1814 | ||
1815 | NOTE: This routine is obsolescent. Each debugging format reader | |
1816 | should manage it's own fundamental types, either creating them from | |
1817 | suitable defaults or reading them from the debugging information, | |
1818 | whichever is appropriate. The DWARF reader has already been | |
1819 | fixed to do this. Once the other readers are fixed, this routine | |
1820 | will go away. Also note that fundamental types should be managed | |
1821 | on a compilation unit basis in a multi-language environment, not | |
1822 | on a linkage unit basis as is done here. */ | |
1823 | ||
1824 | ||
1825 | struct type * | |
1826 | lookup_fundamental_type (struct objfile *objfile, int typeid) | |
1827 | { | |
1828 | struct type **typep; | |
1829 | int nbytes; | |
1830 | ||
1831 | if (typeid < 0 || typeid >= FT_NUM_MEMBERS) | |
1832 | { | |
1833 | error (_("internal error - invalid fundamental type id %d"), typeid); | |
1834 | } | |
1835 | ||
1836 | /* If this is the first time we need a fundamental type for this objfile | |
1837 | then we need to initialize the vector of type pointers. */ | |
1838 | ||
1839 | if (objfile->fundamental_types == NULL) | |
1840 | { | |
1841 | nbytes = FT_NUM_MEMBERS * sizeof (struct type *); | |
1842 | objfile->fundamental_types = (struct type **) | |
1843 | obstack_alloc (&objfile->objfile_obstack, nbytes); | |
1844 | memset ((char *) objfile->fundamental_types, 0, nbytes); | |
1845 | OBJSTAT (objfile, n_types += FT_NUM_MEMBERS); | |
1846 | } | |
1847 | ||
1848 | /* Look for this particular type in the fundamental type vector. If one is | |
1849 | not found, create and install one appropriate for the current language. */ | |
1850 | ||
1851 | typep = objfile->fundamental_types + typeid; | |
1852 | if (*typep == NULL) | |
1853 | { | |
1854 | *typep = create_fundamental_type (objfile, typeid); | |
1855 | } | |
1856 | ||
1857 | return (*typep); | |
1858 | } | |
1859 | ||
1860 | int | |
1861 | can_dereference (struct type *t) | |
1862 | { | |
1863 | /* FIXME: Should we return true for references as well as pointers? */ | |
1864 | CHECK_TYPEDEF (t); | |
1865 | return | |
1866 | (t != NULL | |
1867 | && TYPE_CODE (t) == TYPE_CODE_PTR | |
1868 | && TYPE_CODE (TYPE_TARGET_TYPE (t)) != TYPE_CODE_VOID); | |
1869 | } | |
1870 | ||
1871 | int | |
1872 | is_integral_type (struct type *t) | |
1873 | { | |
1874 | CHECK_TYPEDEF (t); | |
1875 | return | |
1876 | ((t != NULL) | |
1877 | && ((TYPE_CODE (t) == TYPE_CODE_INT) | |
1878 | || (TYPE_CODE (t) == TYPE_CODE_ENUM) | |
1879 | || (TYPE_CODE (t) == TYPE_CODE_FLAGS) | |
1880 | || (TYPE_CODE (t) == TYPE_CODE_CHAR) | |
1881 | || (TYPE_CODE (t) == TYPE_CODE_RANGE) | |
1882 | || (TYPE_CODE (t) == TYPE_CODE_BOOL))); | |
1883 | } | |
1884 | ||
1885 | /* Check whether BASE is an ancestor or base class or DCLASS | |
1886 | Return 1 if so, and 0 if not. | |
1887 | Note: callers may want to check for identity of the types before | |
1888 | calling this function -- identical types are considered to satisfy | |
1889 | the ancestor relationship even if they're identical */ | |
1890 | ||
1891 | int | |
1892 | is_ancestor (struct type *base, struct type *dclass) | |
1893 | { | |
1894 | int i; | |
1895 | ||
1896 | CHECK_TYPEDEF (base); | |
1897 | CHECK_TYPEDEF (dclass); | |
1898 | ||
1899 | if (base == dclass) | |
1900 | return 1; | |
1901 | if (TYPE_NAME (base) && TYPE_NAME (dclass) && | |
1902 | !strcmp (TYPE_NAME (base), TYPE_NAME (dclass))) | |
1903 | return 1; | |
1904 | ||
1905 | for (i = 0; i < TYPE_N_BASECLASSES (dclass); i++) | |
1906 | if (is_ancestor (base, TYPE_BASECLASS (dclass, i))) | |
1907 | return 1; | |
1908 | ||
1909 | return 0; | |
1910 | } | |
1911 | ||
1912 | ||
1913 | ||
1914 | /* See whether DCLASS has a virtual table. This routine is aimed at | |
1915 | the HP/Taligent ANSI C++ runtime model, and may not work with other | |
1916 | runtime models. Return 1 => Yes, 0 => No. */ | |
1917 | ||
1918 | int | |
1919 | has_vtable (struct type *dclass) | |
1920 | { | |
1921 | /* In the HP ANSI C++ runtime model, a class has a vtable only if it | |
1922 | has virtual functions or virtual bases. */ | |
1923 | ||
1924 | int i; | |
1925 | ||
1926 | if (TYPE_CODE (dclass) != TYPE_CODE_CLASS) | |
1927 | return 0; | |
1928 | ||
1929 | /* First check for the presence of virtual bases */ | |
1930 | if (TYPE_FIELD_VIRTUAL_BITS (dclass)) | |
1931 | for (i = 0; i < TYPE_N_BASECLASSES (dclass); i++) | |
1932 | if (B_TST (TYPE_FIELD_VIRTUAL_BITS (dclass), i)) | |
1933 | return 1; | |
1934 | ||
1935 | /* Next check for virtual functions */ | |
1936 | if (TYPE_FN_FIELDLISTS (dclass)) | |
1937 | for (i = 0; i < TYPE_NFN_FIELDS (dclass); i++) | |
1938 | if (TYPE_FN_FIELD_VIRTUAL_P (TYPE_FN_FIELDLIST1 (dclass, i), 0)) | |
1939 | return 1; | |
1940 | ||
1941 | /* Recurse on non-virtual bases to see if any of them needs a vtable */ | |
1942 | if (TYPE_FIELD_VIRTUAL_BITS (dclass)) | |
1943 | for (i = 0; i < TYPE_N_BASECLASSES (dclass); i++) | |
1944 | if ((!B_TST (TYPE_FIELD_VIRTUAL_BITS (dclass), i)) && | |
1945 | (has_vtable (TYPE_FIELD_TYPE (dclass, i)))) | |
1946 | return 1; | |
1947 | ||
1948 | /* Well, maybe we don't need a virtual table */ | |
1949 | return 0; | |
1950 | } | |
1951 | ||
1952 | /* Return a pointer to the "primary base class" of DCLASS. | |
1953 | ||
1954 | A NULL return indicates that DCLASS has no primary base, or that it | |
1955 | couldn't be found (insufficient information). | |
1956 | ||
1957 | This routine is aimed at the HP/Taligent ANSI C++ runtime model, | |
1958 | and may not work with other runtime models. */ | |
1959 | ||
1960 | struct type * | |
1961 | primary_base_class (struct type *dclass) | |
1962 | { | |
1963 | /* In HP ANSI C++'s runtime model, a "primary base class" of a class | |
1964 | is the first directly inherited, non-virtual base class that | |
1965 | requires a virtual table */ | |
1966 | ||
1967 | int i; | |
1968 | ||
1969 | if (TYPE_CODE (dclass) != TYPE_CODE_CLASS) | |
1970 | return NULL; | |
1971 | ||
1972 | for (i = 0; i < TYPE_N_BASECLASSES (dclass); i++) | |
1973 | if (!TYPE_FIELD_VIRTUAL (dclass, i) && | |
1974 | has_vtable (TYPE_FIELD_TYPE (dclass, i))) | |
1975 | return TYPE_FIELD_TYPE (dclass, i); | |
1976 | ||
1977 | return NULL; | |
1978 | } | |
1979 | ||
1980 | /* Global manipulated by virtual_base_list[_aux]() */ | |
1981 | ||
1982 | static struct vbase *current_vbase_list = NULL; | |
1983 | ||
1984 | /* Return a pointer to a null-terminated list of struct vbase | |
1985 | items. The vbasetype pointer of each item in the list points to the | |
1986 | type information for a virtual base of the argument DCLASS. | |
1987 | ||
1988 | Helper function for virtual_base_list(). | |
1989 | Note: the list goes backward, right-to-left. virtual_base_list() | |
1990 | copies the items out in reverse order. */ | |
1991 | ||
1992 | static void | |
1993 | virtual_base_list_aux (struct type *dclass) | |
1994 | { | |
1995 | struct vbase *tmp_vbase; | |
1996 | int i; | |
1997 | ||
1998 | if (TYPE_CODE (dclass) != TYPE_CODE_CLASS) | |
1999 | return; | |
2000 | ||
2001 | for (i = 0; i < TYPE_N_BASECLASSES (dclass); i++) | |
2002 | { | |
2003 | /* Recurse on this ancestor, first */ | |
2004 | virtual_base_list_aux (TYPE_FIELD_TYPE (dclass, i)); | |
2005 | ||
2006 | /* If this current base is itself virtual, add it to the list */ | |
2007 | if (BASETYPE_VIA_VIRTUAL (dclass, i)) | |
2008 | { | |
2009 | struct type *basetype = TYPE_FIELD_TYPE (dclass, i); | |
2010 | ||
2011 | /* Check if base already recorded */ | |
2012 | tmp_vbase = current_vbase_list; | |
2013 | while (tmp_vbase) | |
2014 | { | |
2015 | if (tmp_vbase->vbasetype == basetype) | |
2016 | break; /* found it */ | |
2017 | tmp_vbase = tmp_vbase->next; | |
2018 | } | |
2019 | ||
2020 | if (!tmp_vbase) /* normal exit from loop */ | |
2021 | { | |
2022 | /* Allocate new item for this virtual base */ | |
2023 | tmp_vbase = (struct vbase *) xmalloc (sizeof (struct vbase)); | |
2024 | ||
2025 | /* Stick it on at the end of the list */ | |
2026 | tmp_vbase->vbasetype = basetype; | |
2027 | tmp_vbase->next = current_vbase_list; | |
2028 | current_vbase_list = tmp_vbase; | |
2029 | } | |
2030 | } /* if virtual */ | |
2031 | } /* for loop over bases */ | |
2032 | } | |
2033 | ||
2034 | ||
2035 | /* Compute the list of virtual bases in the right order. Virtual | |
2036 | bases are laid out in the object's memory area in order of their | |
2037 | occurrence in a depth-first, left-to-right search through the | |
2038 | ancestors. | |
2039 | ||
2040 | Argument DCLASS is the type whose virtual bases are required. | |
2041 | Return value is the address of a null-terminated array of pointers | |
2042 | to struct type items. | |
2043 | ||
2044 | This routine is aimed at the HP/Taligent ANSI C++ runtime model, | |
2045 | and may not work with other runtime models. | |
2046 | ||
2047 | This routine merely hands off the argument to virtual_base_list_aux() | |
2048 | and then copies the result into an array to save space. */ | |
2049 | ||
2050 | struct type ** | |
2051 | virtual_base_list (struct type *dclass) | |
2052 | { | |
2053 | struct vbase *tmp_vbase; | |
2054 | struct vbase *tmp_vbase_2; | |
2055 | int i; | |
2056 | int count; | |
2057 | struct type **vbase_array; | |
2058 | ||
2059 | current_vbase_list = NULL; | |
2060 | virtual_base_list_aux (dclass); | |
2061 | ||
2062 | for (i = 0, tmp_vbase = current_vbase_list; tmp_vbase != NULL; i++, tmp_vbase = tmp_vbase->next) | |
2063 | /* no body */ ; | |
2064 | ||
2065 | count = i; | |
2066 | ||
2067 | vbase_array = (struct type **) xmalloc ((count + 1) * sizeof (struct type *)); | |
2068 | ||
2069 | for (i = count - 1, tmp_vbase = current_vbase_list; i >= 0; i--, tmp_vbase = tmp_vbase->next) | |
2070 | vbase_array[i] = tmp_vbase->vbasetype; | |
2071 | ||
2072 | /* Get rid of constructed chain */ | |
2073 | tmp_vbase_2 = tmp_vbase = current_vbase_list; | |
2074 | while (tmp_vbase) | |
2075 | { | |
2076 | tmp_vbase = tmp_vbase->next; | |
2077 | xfree (tmp_vbase_2); | |
2078 | tmp_vbase_2 = tmp_vbase; | |
2079 | } | |
2080 | ||
2081 | vbase_array[count] = NULL; | |
2082 | return vbase_array; | |
2083 | } | |
2084 | ||
2085 | /* Return the length of the virtual base list of the type DCLASS. */ | |
2086 | ||
2087 | int | |
2088 | virtual_base_list_length (struct type *dclass) | |
2089 | { | |
2090 | int i; | |
2091 | struct vbase *tmp_vbase; | |
2092 | ||
2093 | current_vbase_list = NULL; | |
2094 | virtual_base_list_aux (dclass); | |
2095 | ||
2096 | for (i = 0, tmp_vbase = current_vbase_list; tmp_vbase != NULL; i++, tmp_vbase = tmp_vbase->next) | |
2097 | /* no body */ ; | |
2098 | return i; | |
2099 | } | |
2100 | ||
2101 | /* Return the number of elements of the virtual base list of the type | |
2102 | DCLASS, ignoring those appearing in the primary base (and its | |
2103 | primary base, recursively). */ | |
2104 | ||
2105 | int | |
2106 | virtual_base_list_length_skip_primaries (struct type *dclass) | |
2107 | { | |
2108 | int i; | |
2109 | struct vbase *tmp_vbase; | |
2110 | struct type *primary; | |
2111 | ||
2112 | primary = TYPE_RUNTIME_PTR (dclass) ? TYPE_PRIMARY_BASE (dclass) : NULL; | |
2113 | ||
2114 | if (!primary) | |
2115 | return virtual_base_list_length (dclass); | |
2116 | ||
2117 | current_vbase_list = NULL; | |
2118 | virtual_base_list_aux (dclass); | |
2119 | ||
2120 | for (i = 0, tmp_vbase = current_vbase_list; tmp_vbase != NULL; tmp_vbase = tmp_vbase->next) | |
2121 | { | |
2122 | if (virtual_base_index (tmp_vbase->vbasetype, primary) >= 0) | |
2123 | continue; | |
2124 | i++; | |
2125 | } | |
2126 | return i; | |
2127 | } | |
2128 | ||
2129 | ||
2130 | /* Return the index (position) of type BASE, which is a virtual base | |
2131 | class of DCLASS, in the latter's virtual base list. A return of -1 | |
2132 | indicates "not found" or a problem. */ | |
2133 | ||
2134 | int | |
2135 | virtual_base_index (struct type *base, struct type *dclass) | |
2136 | { | |
2137 | struct type *vbase; | |
2138 | int i; | |
2139 | ||
2140 | if ((TYPE_CODE (dclass) != TYPE_CODE_CLASS) || | |
2141 | (TYPE_CODE (base) != TYPE_CODE_CLASS)) | |
2142 | return -1; | |
2143 | ||
2144 | i = 0; | |
2145 | vbase = virtual_base_list (dclass)[0]; | |
2146 | while (vbase) | |
2147 | { | |
2148 | if (vbase == base) | |
2149 | break; | |
2150 | vbase = virtual_base_list (dclass)[++i]; | |
2151 | } | |
2152 | ||
2153 | return vbase ? i : -1; | |
2154 | } | |
2155 | ||
2156 | ||
2157 | ||
2158 | /* Return the index (position) of type BASE, which is a virtual base | |
2159 | class of DCLASS, in the latter's virtual base list. Skip over all | |
2160 | bases that may appear in the virtual base list of the primary base | |
2161 | class of DCLASS (recursively). A return of -1 indicates "not | |
2162 | found" or a problem. */ | |
2163 | ||
2164 | int | |
2165 | virtual_base_index_skip_primaries (struct type *base, struct type *dclass) | |
2166 | { | |
2167 | struct type *vbase; | |
2168 | int i, j; | |
2169 | struct type *primary; | |
2170 | ||
2171 | if ((TYPE_CODE (dclass) != TYPE_CODE_CLASS) || | |
2172 | (TYPE_CODE (base) != TYPE_CODE_CLASS)) | |
2173 | return -1; | |
2174 | ||
2175 | primary = TYPE_RUNTIME_PTR (dclass) ? TYPE_PRIMARY_BASE (dclass) : NULL; | |
2176 | ||
2177 | j = -1; | |
2178 | i = 0; | |
2179 | vbase = virtual_base_list (dclass)[0]; | |
2180 | while (vbase) | |
2181 | { | |
2182 | if (!primary || (virtual_base_index_skip_primaries (vbase, primary) < 0)) | |
2183 | j++; | |
2184 | if (vbase == base) | |
2185 | break; | |
2186 | vbase = virtual_base_list (dclass)[++i]; | |
2187 | } | |
2188 | ||
2189 | return vbase ? j : -1; | |
2190 | } | |
2191 | ||
2192 | /* Return position of a derived class DCLASS in the list of | |
2193 | * primary bases starting with the remotest ancestor. | |
2194 | * Position returned is 0-based. */ | |
2195 | ||
2196 | int | |
2197 | class_index_in_primary_list (struct type *dclass) | |
2198 | { | |
2199 | struct type *pbc; /* primary base class */ | |
2200 | ||
2201 | /* Simply recurse on primary base */ | |
2202 | pbc = TYPE_PRIMARY_BASE (dclass); | |
2203 | if (pbc) | |
2204 | return 1 + class_index_in_primary_list (pbc); | |
2205 | else | |
2206 | return 0; | |
2207 | } | |
2208 | ||
2209 | /* Return a count of the number of virtual functions a type has. | |
2210 | * This includes all the virtual functions it inherits from its | |
2211 | * base classes too. | |
2212 | */ | |
2213 | ||
2214 | /* pai: FIXME This doesn't do the right thing: count redefined virtual | |
2215 | * functions only once (latest redefinition) | |
2216 | */ | |
2217 | ||
2218 | int | |
2219 | count_virtual_fns (struct type *dclass) | |
2220 | { | |
2221 | int fn, oi; /* function and overloaded instance indices */ | |
2222 | int vfuncs; /* count to return */ | |
2223 | ||
2224 | /* recurse on bases that can share virtual table */ | |
2225 | struct type *pbc = primary_base_class (dclass); | |
2226 | if (pbc) | |
2227 | vfuncs = count_virtual_fns (pbc); | |
2228 | else | |
2229 | vfuncs = 0; | |
2230 | ||
2231 | for (fn = 0; fn < TYPE_NFN_FIELDS (dclass); fn++) | |
2232 | for (oi = 0; oi < TYPE_FN_FIELDLIST_LENGTH (dclass, fn); oi++) | |
2233 | if (TYPE_FN_FIELD_VIRTUAL_P (TYPE_FN_FIELDLIST1 (dclass, fn), oi)) | |
2234 | vfuncs++; | |
2235 | ||
2236 | return vfuncs; | |
2237 | } | |
2238 | \f | |
2239 | ||
2240 | ||
2241 | /* Functions for overload resolution begin here */ | |
2242 | ||
2243 | /* Compare two badness vectors A and B and return the result. | |
2244 | * 0 => A and B are identical | |
2245 | * 1 => A and B are incomparable | |
2246 | * 2 => A is better than B | |
2247 | * 3 => A is worse than B */ | |
2248 | ||
2249 | int | |
2250 | compare_badness (struct badness_vector *a, struct badness_vector *b) | |
2251 | { | |
2252 | int i; | |
2253 | int tmp; | |
2254 | short found_pos = 0; /* any positives in c? */ | |
2255 | short found_neg = 0; /* any negatives in c? */ | |
2256 | ||
2257 | /* differing lengths => incomparable */ | |
2258 | if (a->length != b->length) | |
2259 | return 1; | |
2260 | ||
2261 | /* Subtract b from a */ | |
2262 | for (i = 0; i < a->length; i++) | |
2263 | { | |
2264 | tmp = a->rank[i] - b->rank[i]; | |
2265 | if (tmp > 0) | |
2266 | found_pos = 1; | |
2267 | else if (tmp < 0) | |
2268 | found_neg = 1; | |
2269 | } | |
2270 | ||
2271 | if (found_pos) | |
2272 | { | |
2273 | if (found_neg) | |
2274 | return 1; /* incomparable */ | |
2275 | else | |
2276 | return 3; /* A > B */ | |
2277 | } | |
2278 | else | |
2279 | /* no positives */ | |
2280 | { | |
2281 | if (found_neg) | |
2282 | return 2; /* A < B */ | |
2283 | else | |
2284 | return 0; /* A == B */ | |
2285 | } | |
2286 | } | |
2287 | ||
2288 | /* Rank a function by comparing its parameter types (PARMS, length NPARMS), | |
2289 | * to the types of an argument list (ARGS, length NARGS). | |
2290 | * Return a pointer to a badness vector. This has NARGS + 1 entries. */ | |
2291 | ||
2292 | struct badness_vector * | |
2293 | rank_function (struct type **parms, int nparms, struct type **args, int nargs) | |
2294 | { | |
2295 | int i; | |
2296 | struct badness_vector *bv; | |
2297 | int min_len = nparms < nargs ? nparms : nargs; | |
2298 | ||
2299 | bv = xmalloc (sizeof (struct badness_vector)); | |
2300 | bv->length = nargs + 1; /* add 1 for the length-match rank */ | |
2301 | bv->rank = xmalloc ((nargs + 1) * sizeof (int)); | |
2302 | ||
2303 | /* First compare the lengths of the supplied lists. | |
2304 | * If there is a mismatch, set it to a high value. */ | |
2305 | ||
2306 | /* pai/1997-06-03 FIXME: when we have debug info about default | |
2307 | * arguments and ellipsis parameter lists, we should consider those | |
2308 | * and rank the length-match more finely. */ | |
2309 | ||
2310 | LENGTH_MATCH (bv) = (nargs != nparms) ? LENGTH_MISMATCH_BADNESS : 0; | |
2311 | ||
2312 | /* Now rank all the parameters of the candidate function */ | |
2313 | for (i = 1; i <= min_len; i++) | |
2314 | bv->rank[i] = rank_one_type (parms[i-1], args[i-1]); | |
2315 | ||
2316 | /* If more arguments than parameters, add dummy entries */ | |
2317 | for (i = min_len + 1; i <= nargs; i++) | |
2318 | bv->rank[i] = TOO_FEW_PARAMS_BADNESS; | |
2319 | ||
2320 | return bv; | |
2321 | } | |
2322 | ||
2323 | /* Compare the names of two integer types, assuming that any sign | |
2324 | qualifiers have been checked already. We do it this way because | |
2325 | there may be an "int" in the name of one of the types. */ | |
2326 | ||
2327 | static int | |
2328 | integer_types_same_name_p (const char *first, const char *second) | |
2329 | { | |
2330 | int first_p, second_p; | |
2331 | ||
2332 | /* If both are shorts, return 1; if neither is a short, keep checking. */ | |
2333 | first_p = (strstr (first, "short") != NULL); | |
2334 | second_p = (strstr (second, "short") != NULL); | |
2335 | if (first_p && second_p) | |
2336 | return 1; | |
2337 | if (first_p || second_p) | |
2338 | return 0; | |
2339 | ||
2340 | /* Likewise for long. */ | |
2341 | first_p = (strstr (first, "long") != NULL); | |
2342 | second_p = (strstr (second, "long") != NULL); | |
2343 | if (first_p && second_p) | |
2344 | return 1; | |
2345 | if (first_p || second_p) | |
2346 | return 0; | |
2347 | ||
2348 | /* Likewise for char. */ | |
2349 | first_p = (strstr (first, "char") != NULL); | |
2350 | second_p = (strstr (second, "char") != NULL); | |
2351 | if (first_p && second_p) | |
2352 | return 1; | |
2353 | if (first_p || second_p) | |
2354 | return 0; | |
2355 | ||
2356 | /* They must both be ints. */ | |
2357 | return 1; | |
2358 | } | |
2359 | ||
2360 | /* Compare one type (PARM) for compatibility with another (ARG). | |
2361 | * PARM is intended to be the parameter type of a function; and | |
2362 | * ARG is the supplied argument's type. This function tests if | |
2363 | * the latter can be converted to the former. | |
2364 | * | |
2365 | * Return 0 if they are identical types; | |
2366 | * Otherwise, return an integer which corresponds to how compatible | |
2367 | * PARM is to ARG. The higher the return value, the worse the match. | |
2368 | * Generally the "bad" conversions are all uniformly assigned a 100 */ | |
2369 | ||
2370 | int | |
2371 | rank_one_type (struct type *parm, struct type *arg) | |
2372 | { | |
2373 | /* Identical type pointers */ | |
2374 | /* However, this still doesn't catch all cases of same type for arg | |
2375 | * and param. The reason is that builtin types are different from | |
2376 | * the same ones constructed from the object. */ | |
2377 | if (parm == arg) | |
2378 | return 0; | |
2379 | ||
2380 | /* Resolve typedefs */ | |
2381 | if (TYPE_CODE (parm) == TYPE_CODE_TYPEDEF) | |
2382 | parm = check_typedef (parm); | |
2383 | if (TYPE_CODE (arg) == TYPE_CODE_TYPEDEF) | |
2384 | arg = check_typedef (arg); | |
2385 | ||
2386 | /* | |
2387 | Well, damnit, if the names are exactly the same, | |
2388 | i'll say they are exactly the same. This happens when we generate | |
2389 | method stubs. The types won't point to the same address, but they | |
2390 | really are the same. | |
2391 | */ | |
2392 | ||
2393 | if (TYPE_NAME (parm) && TYPE_NAME (arg) && | |
2394 | !strcmp (TYPE_NAME (parm), TYPE_NAME (arg))) | |
2395 | return 0; | |
2396 | ||
2397 | /* Check if identical after resolving typedefs */ | |
2398 | if (parm == arg) | |
2399 | return 0; | |
2400 | ||
2401 | /* See through references, since we can almost make non-references | |
2402 | references. */ | |
2403 | if (TYPE_CODE (arg) == TYPE_CODE_REF) | |
2404 | return (rank_one_type (parm, TYPE_TARGET_TYPE (arg)) | |
2405 | + REFERENCE_CONVERSION_BADNESS); | |
2406 | if (TYPE_CODE (parm) == TYPE_CODE_REF) | |
2407 | return (rank_one_type (TYPE_TARGET_TYPE (parm), arg) | |
2408 | + REFERENCE_CONVERSION_BADNESS); | |
2409 | if (overload_debug) | |
2410 | /* Debugging only. */ | |
2411 | fprintf_filtered (gdb_stderr,"------ Arg is %s [%d], parm is %s [%d]\n", | |
2412 | TYPE_NAME (arg), TYPE_CODE (arg), TYPE_NAME (parm), TYPE_CODE (parm)); | |
2413 | ||
2414 | /* x -> y means arg of type x being supplied for parameter of type y */ | |
2415 | ||
2416 | switch (TYPE_CODE (parm)) | |
2417 | { | |
2418 | case TYPE_CODE_PTR: | |
2419 | switch (TYPE_CODE (arg)) | |
2420 | { | |
2421 | case TYPE_CODE_PTR: | |
2422 | if (TYPE_CODE (TYPE_TARGET_TYPE (parm)) == TYPE_CODE_VOID) | |
2423 | return VOID_PTR_CONVERSION_BADNESS; | |
2424 | else | |
2425 | return rank_one_type (TYPE_TARGET_TYPE (parm), TYPE_TARGET_TYPE (arg)); | |
2426 | case TYPE_CODE_ARRAY: | |
2427 | return rank_one_type (TYPE_TARGET_TYPE (parm), TYPE_TARGET_TYPE (arg)); | |
2428 | case TYPE_CODE_FUNC: | |
2429 | return rank_one_type (TYPE_TARGET_TYPE (parm), arg); | |
2430 | case TYPE_CODE_INT: | |
2431 | case TYPE_CODE_ENUM: | |
2432 | case TYPE_CODE_FLAGS: | |
2433 | case TYPE_CODE_CHAR: | |
2434 | case TYPE_CODE_RANGE: | |
2435 | case TYPE_CODE_BOOL: | |
2436 | return POINTER_CONVERSION_BADNESS; | |
2437 | default: | |
2438 | return INCOMPATIBLE_TYPE_BADNESS; | |
2439 | } | |
2440 | case TYPE_CODE_ARRAY: | |
2441 | switch (TYPE_CODE (arg)) | |
2442 | { | |
2443 | case TYPE_CODE_PTR: | |
2444 | case TYPE_CODE_ARRAY: | |
2445 | return rank_one_type (TYPE_TARGET_TYPE (parm), TYPE_TARGET_TYPE (arg)); | |
2446 | default: | |
2447 | return INCOMPATIBLE_TYPE_BADNESS; | |
2448 | } | |
2449 | case TYPE_CODE_FUNC: | |
2450 | switch (TYPE_CODE (arg)) | |
2451 | { | |
2452 | case TYPE_CODE_PTR: /* funcptr -> func */ | |
2453 | return rank_one_type (parm, TYPE_TARGET_TYPE (arg)); | |
2454 | default: | |
2455 | return INCOMPATIBLE_TYPE_BADNESS; | |
2456 | } | |
2457 | case TYPE_CODE_INT: | |
2458 | switch (TYPE_CODE (arg)) | |
2459 | { | |
2460 | case TYPE_CODE_INT: | |
2461 | if (TYPE_LENGTH (arg) == TYPE_LENGTH (parm)) | |
2462 | { | |
2463 | /* Deal with signed, unsigned, and plain chars and | |
2464 | signed and unsigned ints */ | |
2465 | if (TYPE_NOSIGN (parm)) | |
2466 | { | |
2467 | /* This case only for character types */ | |
2468 | if (TYPE_NOSIGN (arg)) /* plain char -> plain char */ | |
2469 | return 0; | |
2470 | else | |
2471 | return INTEGER_CONVERSION_BADNESS; /* signed/unsigned char -> plain char */ | |
2472 | } | |
2473 | else if (TYPE_UNSIGNED (parm)) | |
2474 | { | |
2475 | if (TYPE_UNSIGNED (arg)) | |
2476 | { | |
2477 | /* unsigned int -> unsigned int, or unsigned long -> unsigned long */ | |
2478 | if (integer_types_same_name_p (TYPE_NAME (parm), TYPE_NAME (arg))) | |
2479 | return 0; | |
2480 | else if (integer_types_same_name_p (TYPE_NAME (arg), "int") | |
2481 | && integer_types_same_name_p (TYPE_NAME (parm), "long")) | |
2482 | return INTEGER_PROMOTION_BADNESS; /* unsigned int -> unsigned long */ | |
2483 | else | |
2484 | return INTEGER_CONVERSION_BADNESS; /* unsigned long -> unsigned int */ | |
2485 | } | |
2486 | else | |
2487 | { | |
2488 | if (integer_types_same_name_p (TYPE_NAME (arg), "long") | |
2489 | && integer_types_same_name_p (TYPE_NAME (parm), "int")) | |
2490 | return INTEGER_CONVERSION_BADNESS; /* signed long -> unsigned int */ | |
2491 | else | |
2492 | return INTEGER_CONVERSION_BADNESS; /* signed int/long -> unsigned int/long */ | |
2493 | } | |
2494 | } | |
2495 | else if (!TYPE_NOSIGN (arg) && !TYPE_UNSIGNED (arg)) | |
2496 | { | |
2497 | if (integer_types_same_name_p (TYPE_NAME (parm), TYPE_NAME (arg))) | |
2498 | return 0; | |
2499 | else if (integer_types_same_name_p (TYPE_NAME (arg), "int") | |
2500 | && integer_types_same_name_p (TYPE_NAME (parm), "long")) | |
2501 | return INTEGER_PROMOTION_BADNESS; | |
2502 | else | |
2503 | return INTEGER_CONVERSION_BADNESS; | |
2504 | } | |
2505 | else | |
2506 | return INTEGER_CONVERSION_BADNESS; | |
2507 | } | |
2508 | else if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm)) | |
2509 | return INTEGER_PROMOTION_BADNESS; | |
2510 | else | |
2511 | return INTEGER_CONVERSION_BADNESS; | |
2512 | case TYPE_CODE_ENUM: | |
2513 | case TYPE_CODE_FLAGS: | |
2514 | case TYPE_CODE_CHAR: | |
2515 | case TYPE_CODE_RANGE: | |
2516 | case TYPE_CODE_BOOL: | |
2517 | return INTEGER_PROMOTION_BADNESS; | |
2518 | case TYPE_CODE_FLT: | |
2519 | return INT_FLOAT_CONVERSION_BADNESS; | |
2520 | case TYPE_CODE_PTR: | |
2521 | return NS_POINTER_CONVERSION_BADNESS; | |
2522 | default: | |
2523 | return INCOMPATIBLE_TYPE_BADNESS; | |
2524 | } | |
2525 | break; | |
2526 | case TYPE_CODE_ENUM: | |
2527 | switch (TYPE_CODE (arg)) | |
2528 | { | |
2529 | case TYPE_CODE_INT: | |
2530 | case TYPE_CODE_CHAR: | |
2531 | case TYPE_CODE_RANGE: | |
2532 | case TYPE_CODE_BOOL: | |
2533 | case TYPE_CODE_ENUM: | |
2534 | return INTEGER_CONVERSION_BADNESS; | |
2535 | case TYPE_CODE_FLT: | |
2536 | return INT_FLOAT_CONVERSION_BADNESS; | |
2537 | default: | |
2538 | return INCOMPATIBLE_TYPE_BADNESS; | |
2539 | } | |
2540 | break; | |
2541 | case TYPE_CODE_CHAR: | |
2542 | switch (TYPE_CODE (arg)) | |
2543 | { | |
2544 | case TYPE_CODE_RANGE: | |
2545 | case TYPE_CODE_BOOL: | |
2546 | case TYPE_CODE_ENUM: | |
2547 | return INTEGER_CONVERSION_BADNESS; | |
2548 | case TYPE_CODE_FLT: | |
2549 | return INT_FLOAT_CONVERSION_BADNESS; | |
2550 | case TYPE_CODE_INT: | |
2551 | if (TYPE_LENGTH (arg) > TYPE_LENGTH (parm)) | |
2552 | return INTEGER_CONVERSION_BADNESS; | |
2553 | else if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm)) | |
2554 | return INTEGER_PROMOTION_BADNESS; | |
2555 | /* >>> !! else fall through !! <<< */ | |
2556 | case TYPE_CODE_CHAR: | |
2557 | /* Deal with signed, unsigned, and plain chars for C++ | |
2558 | and with int cases falling through from previous case */ | |
2559 | if (TYPE_NOSIGN (parm)) | |
2560 | { | |
2561 | if (TYPE_NOSIGN (arg)) | |
2562 | return 0; | |
2563 | else | |
2564 | return INTEGER_CONVERSION_BADNESS; | |
2565 | } | |
2566 | else if (TYPE_UNSIGNED (parm)) | |
2567 | { | |
2568 | if (TYPE_UNSIGNED (arg)) | |
2569 | return 0; | |
2570 | else | |
2571 | return INTEGER_PROMOTION_BADNESS; | |
2572 | } | |
2573 | else if (!TYPE_NOSIGN (arg) && !TYPE_UNSIGNED (arg)) | |
2574 | return 0; | |
2575 | else | |
2576 | return INTEGER_CONVERSION_BADNESS; | |
2577 | default: | |
2578 | return INCOMPATIBLE_TYPE_BADNESS; | |
2579 | } | |
2580 | break; | |
2581 | case TYPE_CODE_RANGE: | |
2582 | switch (TYPE_CODE (arg)) | |
2583 | { | |
2584 | case TYPE_CODE_INT: | |
2585 | case TYPE_CODE_CHAR: | |
2586 | case TYPE_CODE_RANGE: | |
2587 | case TYPE_CODE_BOOL: | |
2588 | case TYPE_CODE_ENUM: | |
2589 | return INTEGER_CONVERSION_BADNESS; | |
2590 | case TYPE_CODE_FLT: | |
2591 | return INT_FLOAT_CONVERSION_BADNESS; | |
2592 | default: | |
2593 | return INCOMPATIBLE_TYPE_BADNESS; | |
2594 | } | |
2595 | break; | |
2596 | case TYPE_CODE_BOOL: | |
2597 | switch (TYPE_CODE (arg)) | |
2598 | { | |
2599 | case TYPE_CODE_INT: | |
2600 | case TYPE_CODE_CHAR: | |
2601 | case TYPE_CODE_RANGE: | |
2602 | case TYPE_CODE_ENUM: | |
2603 | case TYPE_CODE_FLT: | |
2604 | case TYPE_CODE_PTR: | |
2605 | return BOOLEAN_CONVERSION_BADNESS; | |
2606 | case TYPE_CODE_BOOL: | |
2607 | return 0; | |
2608 | default: | |
2609 | return INCOMPATIBLE_TYPE_BADNESS; | |
2610 | } | |
2611 | break; | |
2612 | case TYPE_CODE_FLT: | |
2613 | switch (TYPE_CODE (arg)) | |
2614 | { | |
2615 | case TYPE_CODE_FLT: | |
2616 | if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm)) | |
2617 | return FLOAT_PROMOTION_BADNESS; | |
2618 | else if (TYPE_LENGTH (arg) == TYPE_LENGTH (parm)) | |
2619 | return 0; | |
2620 | else | |
2621 | return FLOAT_CONVERSION_BADNESS; | |
2622 | case TYPE_CODE_INT: | |
2623 | case TYPE_CODE_BOOL: | |
2624 | case TYPE_CODE_ENUM: | |
2625 | case TYPE_CODE_RANGE: | |
2626 | case TYPE_CODE_CHAR: | |
2627 | return INT_FLOAT_CONVERSION_BADNESS; | |
2628 | default: | |
2629 | return INCOMPATIBLE_TYPE_BADNESS; | |
2630 | } | |
2631 | break; | |
2632 | case TYPE_CODE_COMPLEX: | |
2633 | switch (TYPE_CODE (arg)) | |
2634 | { /* Strictly not needed for C++, but... */ | |
2635 | case TYPE_CODE_FLT: | |
2636 | return FLOAT_PROMOTION_BADNESS; | |
2637 | case TYPE_CODE_COMPLEX: | |
2638 | return 0; | |
2639 | default: | |
2640 | return INCOMPATIBLE_TYPE_BADNESS; | |
2641 | } | |
2642 | break; | |
2643 | case TYPE_CODE_STRUCT: | |
2644 | /* currently same as TYPE_CODE_CLASS */ | |
2645 | switch (TYPE_CODE (arg)) | |
2646 | { | |
2647 | case TYPE_CODE_STRUCT: | |
2648 | /* Check for derivation */ | |
2649 | if (is_ancestor (parm, arg)) | |
2650 | return BASE_CONVERSION_BADNESS; | |
2651 | /* else fall through */ | |
2652 | default: | |
2653 | return INCOMPATIBLE_TYPE_BADNESS; | |
2654 | } | |
2655 | break; | |
2656 | case TYPE_CODE_UNION: | |
2657 | switch (TYPE_CODE (arg)) | |
2658 | { | |
2659 | case TYPE_CODE_UNION: | |
2660 | default: | |
2661 | return INCOMPATIBLE_TYPE_BADNESS; | |
2662 | } | |
2663 | break; | |
2664 | case TYPE_CODE_MEMBERPTR: | |
2665 | switch (TYPE_CODE (arg)) | |
2666 | { | |
2667 | default: | |
2668 | return INCOMPATIBLE_TYPE_BADNESS; | |
2669 | } | |
2670 | break; | |
2671 | case TYPE_CODE_METHOD: | |
2672 | switch (TYPE_CODE (arg)) | |
2673 | { | |
2674 | ||
2675 | default: | |
2676 | return INCOMPATIBLE_TYPE_BADNESS; | |
2677 | } | |
2678 | break; | |
2679 | case TYPE_CODE_REF: | |
2680 | switch (TYPE_CODE (arg)) | |
2681 | { | |
2682 | ||
2683 | default: | |
2684 | return INCOMPATIBLE_TYPE_BADNESS; | |
2685 | } | |
2686 | ||
2687 | break; | |
2688 | case TYPE_CODE_SET: | |
2689 | switch (TYPE_CODE (arg)) | |
2690 | { | |
2691 | /* Not in C++ */ | |
2692 | case TYPE_CODE_SET: | |
2693 | return rank_one_type (TYPE_FIELD_TYPE (parm, 0), TYPE_FIELD_TYPE (arg, 0)); | |
2694 | default: | |
2695 | return INCOMPATIBLE_TYPE_BADNESS; | |
2696 | } | |
2697 | break; | |
2698 | case TYPE_CODE_VOID: | |
2699 | default: | |
2700 | return INCOMPATIBLE_TYPE_BADNESS; | |
2701 | } /* switch (TYPE_CODE (arg)) */ | |
2702 | } | |
2703 | ||
2704 | ||
2705 | /* End of functions for overload resolution */ | |
2706 | ||
2707 | static void | |
2708 | print_bit_vector (B_TYPE *bits, int nbits) | |
2709 | { | |
2710 | int bitno; | |
2711 | ||
2712 | for (bitno = 0; bitno < nbits; bitno++) | |
2713 | { | |
2714 | if ((bitno % 8) == 0) | |
2715 | { | |
2716 | puts_filtered (" "); | |
2717 | } | |
2718 | if (B_TST (bits, bitno)) | |
2719 | printf_filtered (("1")); | |
2720 | else | |
2721 | printf_filtered (("0")); | |
2722 | } | |
2723 | } | |
2724 | ||
2725 | /* Note the first arg should be the "this" pointer, we may not want to | |
2726 | include it since we may get into a infinitely recursive situation. */ | |
2727 | ||
2728 | static void | |
2729 | print_arg_types (struct field *args, int nargs, int spaces) | |
2730 | { | |
2731 | if (args != NULL) | |
2732 | { | |
2733 | int i; | |
2734 | ||
2735 | for (i = 0; i < nargs; i++) | |
2736 | recursive_dump_type (args[i].type, spaces + 2); | |
2737 | } | |
2738 | } | |
2739 | ||
2740 | static void | |
2741 | dump_fn_fieldlists (struct type *type, int spaces) | |
2742 | { | |
2743 | int method_idx; | |
2744 | int overload_idx; | |
2745 | struct fn_field *f; | |
2746 | ||
2747 | printfi_filtered (spaces, "fn_fieldlists "); | |
2748 | gdb_print_host_address (TYPE_FN_FIELDLISTS (type), gdb_stdout); | |
2749 | printf_filtered ("\n"); | |
2750 | for (method_idx = 0; method_idx < TYPE_NFN_FIELDS (type); method_idx++) | |
2751 | { | |
2752 | f = TYPE_FN_FIELDLIST1 (type, method_idx); | |
2753 | printfi_filtered (spaces + 2, "[%d] name '%s' (", | |
2754 | method_idx, | |
2755 | TYPE_FN_FIELDLIST_NAME (type, method_idx)); | |
2756 | gdb_print_host_address (TYPE_FN_FIELDLIST_NAME (type, method_idx), | |
2757 | gdb_stdout); | |
2758 | printf_filtered (_(") length %d\n"), | |
2759 | TYPE_FN_FIELDLIST_LENGTH (type, method_idx)); | |
2760 | for (overload_idx = 0; | |
2761 | overload_idx < TYPE_FN_FIELDLIST_LENGTH (type, method_idx); | |
2762 | overload_idx++) | |
2763 | { | |
2764 | printfi_filtered (spaces + 4, "[%d] physname '%s' (", | |
2765 | overload_idx, | |
2766 | TYPE_FN_FIELD_PHYSNAME (f, overload_idx)); | |
2767 | gdb_print_host_address (TYPE_FN_FIELD_PHYSNAME (f, overload_idx), | |
2768 | gdb_stdout); | |
2769 | printf_filtered (")\n"); | |
2770 | printfi_filtered (spaces + 8, "type "); | |
2771 | gdb_print_host_address (TYPE_FN_FIELD_TYPE (f, overload_idx), gdb_stdout); | |
2772 | printf_filtered ("\n"); | |
2773 | ||
2774 | recursive_dump_type (TYPE_FN_FIELD_TYPE (f, overload_idx), | |
2775 | spaces + 8 + 2); | |
2776 | ||
2777 | printfi_filtered (spaces + 8, "args "); | |
2778 | gdb_print_host_address (TYPE_FN_FIELD_ARGS (f, overload_idx), gdb_stdout); | |
2779 | printf_filtered ("\n"); | |
2780 | ||
2781 | print_arg_types (TYPE_FN_FIELD_ARGS (f, overload_idx), | |
2782 | TYPE_NFIELDS (TYPE_FN_FIELD_TYPE (f, overload_idx)), | |
2783 | spaces); | |
2784 | printfi_filtered (spaces + 8, "fcontext "); | |
2785 | gdb_print_host_address (TYPE_FN_FIELD_FCONTEXT (f, overload_idx), | |
2786 | gdb_stdout); | |
2787 | printf_filtered ("\n"); | |
2788 | ||
2789 | printfi_filtered (spaces + 8, "is_const %d\n", | |
2790 | TYPE_FN_FIELD_CONST (f, overload_idx)); | |
2791 | printfi_filtered (spaces + 8, "is_volatile %d\n", | |
2792 | TYPE_FN_FIELD_VOLATILE (f, overload_idx)); | |
2793 | printfi_filtered (spaces + 8, "is_private %d\n", | |
2794 | TYPE_FN_FIELD_PRIVATE (f, overload_idx)); | |
2795 | printfi_filtered (spaces + 8, "is_protected %d\n", | |
2796 | TYPE_FN_FIELD_PROTECTED (f, overload_idx)); | |
2797 | printfi_filtered (spaces + 8, "is_stub %d\n", | |
2798 | TYPE_FN_FIELD_STUB (f, overload_idx)); | |
2799 | printfi_filtered (spaces + 8, "voffset %u\n", | |
2800 | TYPE_FN_FIELD_VOFFSET (f, overload_idx)); | |
2801 | } | |
2802 | } | |
2803 | } | |
2804 | ||
2805 | static void | |
2806 | print_cplus_stuff (struct type *type, int spaces) | |
2807 | { | |
2808 | printfi_filtered (spaces, "n_baseclasses %d\n", | |
2809 | TYPE_N_BASECLASSES (type)); | |
2810 | printfi_filtered (spaces, "nfn_fields %d\n", | |
2811 | TYPE_NFN_FIELDS (type)); | |
2812 | printfi_filtered (spaces, "nfn_fields_total %d\n", | |
2813 | TYPE_NFN_FIELDS_TOTAL (type)); | |
2814 | if (TYPE_N_BASECLASSES (type) > 0) | |
2815 | { | |
2816 | printfi_filtered (spaces, "virtual_field_bits (%d bits at *", | |
2817 | TYPE_N_BASECLASSES (type)); | |
2818 | gdb_print_host_address (TYPE_FIELD_VIRTUAL_BITS (type), gdb_stdout); | |
2819 | printf_filtered (")"); | |
2820 | ||
2821 | print_bit_vector (TYPE_FIELD_VIRTUAL_BITS (type), | |
2822 | TYPE_N_BASECLASSES (type)); | |
2823 | puts_filtered ("\n"); | |
2824 | } | |
2825 | if (TYPE_NFIELDS (type) > 0) | |
2826 | { | |
2827 | if (TYPE_FIELD_PRIVATE_BITS (type) != NULL) | |
2828 | { | |
2829 | printfi_filtered (spaces, "private_field_bits (%d bits at *", | |
2830 | TYPE_NFIELDS (type)); | |
2831 | gdb_print_host_address (TYPE_FIELD_PRIVATE_BITS (type), gdb_stdout); | |
2832 | printf_filtered (")"); | |
2833 | print_bit_vector (TYPE_FIELD_PRIVATE_BITS (type), | |
2834 | TYPE_NFIELDS (type)); | |
2835 | puts_filtered ("\n"); | |
2836 | } | |
2837 | if (TYPE_FIELD_PROTECTED_BITS (type) != NULL) | |
2838 | { | |
2839 | printfi_filtered (spaces, "protected_field_bits (%d bits at *", | |
2840 | TYPE_NFIELDS (type)); | |
2841 | gdb_print_host_address (TYPE_FIELD_PROTECTED_BITS (type), gdb_stdout); | |
2842 | printf_filtered (")"); | |
2843 | print_bit_vector (TYPE_FIELD_PROTECTED_BITS (type), | |
2844 | TYPE_NFIELDS (type)); | |
2845 | puts_filtered ("\n"); | |
2846 | } | |
2847 | } | |
2848 | if (TYPE_NFN_FIELDS (type) > 0) | |
2849 | { | |
2850 | dump_fn_fieldlists (type, spaces); | |
2851 | } | |
2852 | } | |
2853 | ||
2854 | static void | |
2855 | print_bound_type (int bt) | |
2856 | { | |
2857 | switch (bt) | |
2858 | { | |
2859 | case BOUND_CANNOT_BE_DETERMINED: | |
2860 | printf_filtered ("(BOUND_CANNOT_BE_DETERMINED)"); | |
2861 | break; | |
2862 | case BOUND_BY_REF_ON_STACK: | |
2863 | printf_filtered ("(BOUND_BY_REF_ON_STACK)"); | |
2864 | break; | |
2865 | case BOUND_BY_VALUE_ON_STACK: | |
2866 | printf_filtered ("(BOUND_BY_VALUE_ON_STACK)"); | |
2867 | break; | |
2868 | case BOUND_BY_REF_IN_REG: | |
2869 | printf_filtered ("(BOUND_BY_REF_IN_REG)"); | |
2870 | break; | |
2871 | case BOUND_BY_VALUE_IN_REG: | |
2872 | printf_filtered ("(BOUND_BY_VALUE_IN_REG)"); | |
2873 | break; | |
2874 | case BOUND_SIMPLE: | |
2875 | printf_filtered ("(BOUND_SIMPLE)"); | |
2876 | break; | |
2877 | default: | |
2878 | printf_filtered (_("(unknown bound type)")); | |
2879 | break; | |
2880 | } | |
2881 | } | |
2882 | ||
2883 | static struct obstack dont_print_type_obstack; | |
2884 | ||
2885 | void | |
2886 | recursive_dump_type (struct type *type, int spaces) | |
2887 | { | |
2888 | int idx; | |
2889 | ||
2890 | if (spaces == 0) | |
2891 | obstack_begin (&dont_print_type_obstack, 0); | |
2892 | ||
2893 | if (TYPE_NFIELDS (type) > 0 | |
2894 | || (TYPE_CPLUS_SPECIFIC (type) && TYPE_NFN_FIELDS (type) > 0)) | |
2895 | { | |
2896 | struct type **first_dont_print | |
2897 | = (struct type **) obstack_base (&dont_print_type_obstack); | |
2898 | ||
2899 | int i = (struct type **) obstack_next_free (&dont_print_type_obstack) | |
2900 | - first_dont_print; | |
2901 | ||
2902 | while (--i >= 0) | |
2903 | { | |
2904 | if (type == first_dont_print[i]) | |
2905 | { | |
2906 | printfi_filtered (spaces, "type node "); | |
2907 | gdb_print_host_address (type, gdb_stdout); | |
2908 | printf_filtered (_(" <same as already seen type>\n")); | |
2909 | return; | |
2910 | } | |
2911 | } | |
2912 | ||
2913 | obstack_ptr_grow (&dont_print_type_obstack, type); | |
2914 | } | |
2915 | ||
2916 | printfi_filtered (spaces, "type node "); | |
2917 | gdb_print_host_address (type, gdb_stdout); | |
2918 | printf_filtered ("\n"); | |
2919 | printfi_filtered (spaces, "name '%s' (", | |
2920 | TYPE_NAME (type) ? TYPE_NAME (type) : "<NULL>"); | |
2921 | gdb_print_host_address (TYPE_NAME (type), gdb_stdout); | |
2922 | printf_filtered (")\n"); | |
2923 | printfi_filtered (spaces, "tagname '%s' (", | |
2924 | TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : "<NULL>"); | |
2925 | gdb_print_host_address (TYPE_TAG_NAME (type), gdb_stdout); | |
2926 | printf_filtered (")\n"); | |
2927 | printfi_filtered (spaces, "code 0x%x ", TYPE_CODE (type)); | |
2928 | switch (TYPE_CODE (type)) | |
2929 | { | |
2930 | case TYPE_CODE_UNDEF: | |
2931 | printf_filtered ("(TYPE_CODE_UNDEF)"); | |
2932 | break; | |
2933 | case TYPE_CODE_PTR: | |
2934 | printf_filtered ("(TYPE_CODE_PTR)"); | |
2935 | break; | |
2936 | case TYPE_CODE_ARRAY: | |
2937 | printf_filtered ("(TYPE_CODE_ARRAY)"); | |
2938 | break; | |
2939 | case TYPE_CODE_STRUCT: | |
2940 | printf_filtered ("(TYPE_CODE_STRUCT)"); | |
2941 | break; | |
2942 | case TYPE_CODE_UNION: | |
2943 | printf_filtered ("(TYPE_CODE_UNION)"); | |
2944 | break; | |
2945 | case TYPE_CODE_ENUM: | |
2946 | printf_filtered ("(TYPE_CODE_ENUM)"); | |
2947 | break; | |
2948 | case TYPE_CODE_FLAGS: | |
2949 | printf_filtered ("(TYPE_CODE_FLAGS)"); | |
2950 | break; | |
2951 | case TYPE_CODE_FUNC: | |
2952 | printf_filtered ("(TYPE_CODE_FUNC)"); | |
2953 | break; | |
2954 | case TYPE_CODE_INT: | |
2955 | printf_filtered ("(TYPE_CODE_INT)"); | |
2956 | break; | |
2957 | case TYPE_CODE_FLT: | |
2958 | printf_filtered ("(TYPE_CODE_FLT)"); | |
2959 | break; | |
2960 | case TYPE_CODE_VOID: | |
2961 | printf_filtered ("(TYPE_CODE_VOID)"); | |
2962 | break; | |
2963 | case TYPE_CODE_SET: | |
2964 | printf_filtered ("(TYPE_CODE_SET)"); | |
2965 | break; | |
2966 | case TYPE_CODE_RANGE: | |
2967 | printf_filtered ("(TYPE_CODE_RANGE)"); | |
2968 | break; | |
2969 | case TYPE_CODE_STRING: | |
2970 | printf_filtered ("(TYPE_CODE_STRING)"); | |
2971 | break; | |
2972 | case TYPE_CODE_BITSTRING: | |
2973 | printf_filtered ("(TYPE_CODE_BITSTRING)"); | |
2974 | break; | |
2975 | case TYPE_CODE_ERROR: | |
2976 | printf_filtered ("(TYPE_CODE_ERROR)"); | |
2977 | break; | |
2978 | case TYPE_CODE_MEMBERPTR: | |
2979 | printf_filtered ("(TYPE_CODE_MEMBERPTR)"); | |
2980 | break; | |
2981 | case TYPE_CODE_METHODPTR: | |
2982 | printf_filtered ("(TYPE_CODE_METHODPTR)"); | |
2983 | break; | |
2984 | case TYPE_CODE_METHOD: | |
2985 | printf_filtered ("(TYPE_CODE_METHOD)"); | |
2986 | break; | |
2987 | case TYPE_CODE_REF: | |
2988 | printf_filtered ("(TYPE_CODE_REF)"); | |
2989 | break; | |
2990 | case TYPE_CODE_CHAR: | |
2991 | printf_filtered ("(TYPE_CODE_CHAR)"); | |
2992 | break; | |
2993 | case TYPE_CODE_BOOL: | |
2994 | printf_filtered ("(TYPE_CODE_BOOL)"); | |
2995 | break; | |
2996 | case TYPE_CODE_COMPLEX: | |
2997 | printf_filtered ("(TYPE_CODE_COMPLEX)"); | |
2998 | break; | |
2999 | case TYPE_CODE_TYPEDEF: | |
3000 | printf_filtered ("(TYPE_CODE_TYPEDEF)"); | |
3001 | break; | |
3002 | case TYPE_CODE_TEMPLATE: | |
3003 | printf_filtered ("(TYPE_CODE_TEMPLATE)"); | |
3004 | break; | |
3005 | case TYPE_CODE_TEMPLATE_ARG: | |
3006 | printf_filtered ("(TYPE_CODE_TEMPLATE_ARG)"); | |
3007 | break; | |
3008 | case TYPE_CODE_NAMESPACE: | |
3009 | printf_filtered ("(TYPE_CODE_NAMESPACE)"); | |
3010 | break; | |
3011 | default: | |
3012 | printf_filtered ("(UNKNOWN TYPE CODE)"); | |
3013 | break; | |
3014 | } | |
3015 | puts_filtered ("\n"); | |
3016 | printfi_filtered (spaces, "length %d\n", TYPE_LENGTH (type)); | |
3017 | printfi_filtered (spaces, "upper_bound_type 0x%x ", | |
3018 | TYPE_ARRAY_UPPER_BOUND_TYPE (type)); | |
3019 | print_bound_type (TYPE_ARRAY_UPPER_BOUND_TYPE (type)); | |
3020 | puts_filtered ("\n"); | |
3021 | printfi_filtered (spaces, "lower_bound_type 0x%x ", | |
3022 | TYPE_ARRAY_LOWER_BOUND_TYPE (type)); | |
3023 | print_bound_type (TYPE_ARRAY_LOWER_BOUND_TYPE (type)); | |
3024 | puts_filtered ("\n"); | |
3025 | printfi_filtered (spaces, "objfile "); | |
3026 | gdb_print_host_address (TYPE_OBJFILE (type), gdb_stdout); | |
3027 | printf_filtered ("\n"); | |
3028 | printfi_filtered (spaces, "target_type "); | |
3029 | gdb_print_host_address (TYPE_TARGET_TYPE (type), gdb_stdout); | |
3030 | printf_filtered ("\n"); | |
3031 | if (TYPE_TARGET_TYPE (type) != NULL) | |
3032 | { | |
3033 | recursive_dump_type (TYPE_TARGET_TYPE (type), spaces + 2); | |
3034 | } | |
3035 | printfi_filtered (spaces, "pointer_type "); | |
3036 | gdb_print_host_address (TYPE_POINTER_TYPE (type), gdb_stdout); | |
3037 | printf_filtered ("\n"); | |
3038 | printfi_filtered (spaces, "reference_type "); | |
3039 | gdb_print_host_address (TYPE_REFERENCE_TYPE (type), gdb_stdout); | |
3040 | printf_filtered ("\n"); | |
3041 | printfi_filtered (spaces, "type_chain "); | |
3042 | gdb_print_host_address (TYPE_CHAIN (type), gdb_stdout); | |
3043 | printf_filtered ("\n"); | |
3044 | printfi_filtered (spaces, "instance_flags 0x%x", TYPE_INSTANCE_FLAGS (type)); | |
3045 | if (TYPE_CONST (type)) | |
3046 | { | |
3047 | puts_filtered (" TYPE_FLAG_CONST"); | |
3048 | } | |
3049 | if (TYPE_VOLATILE (type)) | |
3050 | { | |
3051 | puts_filtered (" TYPE_FLAG_VOLATILE"); | |
3052 | } | |
3053 | if (TYPE_CODE_SPACE (type)) | |
3054 | { | |
3055 | puts_filtered (" TYPE_FLAG_CODE_SPACE"); | |
3056 | } | |
3057 | if (TYPE_DATA_SPACE (type)) | |
3058 | { | |
3059 | puts_filtered (" TYPE_FLAG_DATA_SPACE"); | |
3060 | } | |
3061 | if (TYPE_ADDRESS_CLASS_1 (type)) | |
3062 | { | |
3063 | puts_filtered (" TYPE_FLAG_ADDRESS_CLASS_1"); | |
3064 | } | |
3065 | if (TYPE_ADDRESS_CLASS_2 (type)) | |
3066 | { | |
3067 | puts_filtered (" TYPE_FLAG_ADDRESS_CLASS_2"); | |
3068 | } | |
3069 | puts_filtered ("\n"); | |
3070 | printfi_filtered (spaces, "flags 0x%x", TYPE_FLAGS (type)); | |
3071 | if (TYPE_UNSIGNED (type)) | |
3072 | { | |
3073 | puts_filtered (" TYPE_FLAG_UNSIGNED"); | |
3074 | } | |
3075 | if (TYPE_NOSIGN (type)) | |
3076 | { | |
3077 | puts_filtered (" TYPE_FLAG_NOSIGN"); | |
3078 | } | |
3079 | if (TYPE_STUB (type)) | |
3080 | { | |
3081 | puts_filtered (" TYPE_FLAG_STUB"); | |
3082 | } | |
3083 | if (TYPE_TARGET_STUB (type)) | |
3084 | { | |
3085 | puts_filtered (" TYPE_FLAG_TARGET_STUB"); | |
3086 | } | |
3087 | if (TYPE_STATIC (type)) | |
3088 | { | |
3089 | puts_filtered (" TYPE_FLAG_STATIC"); | |
3090 | } | |
3091 | if (TYPE_PROTOTYPED (type)) | |
3092 | { | |
3093 | puts_filtered (" TYPE_FLAG_PROTOTYPED"); | |
3094 | } | |
3095 | if (TYPE_INCOMPLETE (type)) | |
3096 | { | |
3097 | puts_filtered (" TYPE_FLAG_INCOMPLETE"); | |
3098 | } | |
3099 | if (TYPE_VARARGS (type)) | |
3100 | { | |
3101 | puts_filtered (" TYPE_FLAG_VARARGS"); | |
3102 | } | |
3103 | /* This is used for things like AltiVec registers on ppc. Gcc emits | |
3104 | an attribute for the array type, which tells whether or not we | |
3105 | have a vector, instead of a regular array. */ | |
3106 | if (TYPE_VECTOR (type)) | |
3107 | { | |
3108 | puts_filtered (" TYPE_FLAG_VECTOR"); | |
3109 | } | |
3110 | puts_filtered ("\n"); | |
3111 | printfi_filtered (spaces, "nfields %d ", TYPE_NFIELDS (type)); | |
3112 | gdb_print_host_address (TYPE_FIELDS (type), gdb_stdout); | |
3113 | puts_filtered ("\n"); | |
3114 | for (idx = 0; idx < TYPE_NFIELDS (type); idx++) | |
3115 | { | |
3116 | printfi_filtered (spaces + 2, | |
3117 | "[%d] bitpos %d bitsize %d type ", | |
3118 | idx, TYPE_FIELD_BITPOS (type, idx), | |
3119 | TYPE_FIELD_BITSIZE (type, idx)); | |
3120 | gdb_print_host_address (TYPE_FIELD_TYPE (type, idx), gdb_stdout); | |
3121 | printf_filtered (" name '%s' (", | |
3122 | TYPE_FIELD_NAME (type, idx) != NULL | |
3123 | ? TYPE_FIELD_NAME (type, idx) | |
3124 | : "<NULL>"); | |
3125 | gdb_print_host_address (TYPE_FIELD_NAME (type, idx), gdb_stdout); | |
3126 | printf_filtered (")\n"); | |
3127 | if (TYPE_FIELD_TYPE (type, idx) != NULL) | |
3128 | { | |
3129 | recursive_dump_type (TYPE_FIELD_TYPE (type, idx), spaces + 4); | |
3130 | } | |
3131 | } | |
3132 | printfi_filtered (spaces, "vptr_basetype "); | |
3133 | gdb_print_host_address (TYPE_VPTR_BASETYPE (type), gdb_stdout); | |
3134 | puts_filtered ("\n"); | |
3135 | if (TYPE_VPTR_BASETYPE (type) != NULL) | |
3136 | { | |
3137 | recursive_dump_type (TYPE_VPTR_BASETYPE (type), spaces + 2); | |
3138 | } | |
3139 | printfi_filtered (spaces, "vptr_fieldno %d\n", TYPE_VPTR_FIELDNO (type)); | |
3140 | switch (TYPE_CODE (type)) | |
3141 | { | |
3142 | case TYPE_CODE_STRUCT: | |
3143 | printfi_filtered (spaces, "cplus_stuff "); | |
3144 | gdb_print_host_address (TYPE_CPLUS_SPECIFIC (type), gdb_stdout); | |
3145 | puts_filtered ("\n"); | |
3146 | print_cplus_stuff (type, spaces); | |
3147 | break; | |
3148 | ||
3149 | case TYPE_CODE_FLT: | |
3150 | printfi_filtered (spaces, "floatformat "); | |
3151 | if (TYPE_FLOATFORMAT (type) == NULL | |
3152 | || TYPE_FLOATFORMAT (type)->name == NULL) | |
3153 | puts_filtered ("(null)"); | |
3154 | else | |
3155 | puts_filtered (TYPE_FLOATFORMAT (type)->name); | |
3156 | puts_filtered ("\n"); | |
3157 | break; | |
3158 | ||
3159 | default: | |
3160 | /* We have to pick one of the union types to be able print and test | |
3161 | the value. Pick cplus_struct_type, even though we know it isn't | |
3162 | any particular one. */ | |
3163 | printfi_filtered (spaces, "type_specific "); | |
3164 | gdb_print_host_address (TYPE_CPLUS_SPECIFIC (type), gdb_stdout); | |
3165 | if (TYPE_CPLUS_SPECIFIC (type) != NULL) | |
3166 | { | |
3167 | printf_filtered (_(" (unknown data form)")); | |
3168 | } | |
3169 | printf_filtered ("\n"); | |
3170 | break; | |
3171 | ||
3172 | } | |
3173 | if (spaces == 0) | |
3174 | obstack_free (&dont_print_type_obstack, NULL); | |
3175 | } | |
3176 | ||
3177 | /* Trivial helpers for the libiberty hash table, for mapping one | |
3178 | type to another. */ | |
3179 | ||
3180 | struct type_pair | |
3181 | { | |
3182 | struct type *old, *new; | |
3183 | }; | |
3184 | ||
3185 | static hashval_t | |
3186 | type_pair_hash (const void *item) | |
3187 | { | |
3188 | const struct type_pair *pair = item; | |
3189 | return htab_hash_pointer (pair->old); | |
3190 | } | |
3191 | ||
3192 | static int | |
3193 | type_pair_eq (const void *item_lhs, const void *item_rhs) | |
3194 | { | |
3195 | const struct type_pair *lhs = item_lhs, *rhs = item_rhs; | |
3196 | return lhs->old == rhs->old; | |
3197 | } | |
3198 | ||
3199 | /* Allocate the hash table used by copy_type_recursive to walk | |
3200 | types without duplicates. We use OBJFILE's obstack, because | |
3201 | OBJFILE is about to be deleted. */ | |
3202 | ||
3203 | htab_t | |
3204 | create_copied_types_hash (struct objfile *objfile) | |
3205 | { | |
3206 | return htab_create_alloc_ex (1, type_pair_hash, type_pair_eq, | |
3207 | NULL, &objfile->objfile_obstack, | |
3208 | hashtab_obstack_allocate, | |
3209 | dummy_obstack_deallocate); | |
3210 | } | |
3211 | ||
3212 | /* Recursively copy (deep copy) TYPE, if it is associated with OBJFILE. | |
3213 | Return a new type allocated using malloc, a saved type if we have already | |
3214 | visited TYPE (using COPIED_TYPES), or TYPE if it is not associated with | |
3215 | OBJFILE. */ | |
3216 | ||
3217 | struct type * | |
3218 | copy_type_recursive (struct objfile *objfile, struct type *type, | |
3219 | htab_t copied_types) | |
3220 | { | |
3221 | struct type_pair *stored, pair; | |
3222 | void **slot; | |
3223 | struct type *new_type; | |
3224 | ||
3225 | if (TYPE_OBJFILE (type) == NULL) | |
3226 | return type; | |
3227 | ||
3228 | /* This type shouldn't be pointing to any types in other objfiles; if | |
3229 | it did, the type might disappear unexpectedly. */ | |
3230 | gdb_assert (TYPE_OBJFILE (type) == objfile); | |
3231 | ||
3232 | pair.old = type; | |
3233 | slot = htab_find_slot (copied_types, &pair, INSERT); | |
3234 | if (*slot != NULL) | |
3235 | return ((struct type_pair *) *slot)->new; | |
3236 | ||
3237 | new_type = alloc_type (NULL); | |
3238 | ||
3239 | /* We must add the new type to the hash table immediately, in case | |
3240 | we encounter this type again during a recursive call below. */ | |
3241 | stored = xmalloc (sizeof (struct type_pair)); | |
3242 | stored->old = type; | |
3243 | stored->new = new_type; | |
3244 | *slot = stored; | |
3245 | ||
3246 | /* Copy the common fields of types. */ | |
3247 | TYPE_CODE (new_type) = TYPE_CODE (type); | |
3248 | TYPE_ARRAY_UPPER_BOUND_TYPE (new_type) = TYPE_ARRAY_UPPER_BOUND_TYPE (type); | |
3249 | TYPE_ARRAY_LOWER_BOUND_TYPE (new_type) = TYPE_ARRAY_LOWER_BOUND_TYPE (type); | |
3250 | if (TYPE_NAME (type)) | |
3251 | TYPE_NAME (new_type) = xstrdup (TYPE_NAME (type)); | |
3252 | if (TYPE_TAG_NAME (type)) | |
3253 | TYPE_TAG_NAME (new_type) = xstrdup (TYPE_TAG_NAME (type)); | |
3254 | TYPE_FLAGS (new_type) = TYPE_FLAGS (type); | |
3255 | TYPE_VPTR_FIELDNO (new_type) = TYPE_VPTR_FIELDNO (type); | |
3256 | ||
3257 | TYPE_INSTANCE_FLAGS (new_type) = TYPE_INSTANCE_FLAGS (type); | |
3258 | TYPE_LENGTH (new_type) = TYPE_LENGTH (type); | |
3259 | ||
3260 | /* Copy the fields. */ | |
3261 | TYPE_NFIELDS (new_type) = TYPE_NFIELDS (type); | |
3262 | if (TYPE_NFIELDS (type)) | |
3263 | { | |
3264 | int i, nfields; | |
3265 | ||
3266 | nfields = TYPE_NFIELDS (type); | |
3267 | TYPE_FIELDS (new_type) = xmalloc (sizeof (struct field) * nfields); | |
3268 | for (i = 0; i < nfields; i++) | |
3269 | { | |
3270 | TYPE_FIELD_ARTIFICIAL (new_type, i) = TYPE_FIELD_ARTIFICIAL (type, i); | |
3271 | TYPE_FIELD_BITSIZE (new_type, i) = TYPE_FIELD_BITSIZE (type, i); | |
3272 | if (TYPE_FIELD_TYPE (type, i)) | |
3273 | TYPE_FIELD_TYPE (new_type, i) | |
3274 | = copy_type_recursive (objfile, TYPE_FIELD_TYPE (type, i), | |
3275 | copied_types); | |
3276 | if (TYPE_FIELD_NAME (type, i)) | |
3277 | TYPE_FIELD_NAME (new_type, i) = xstrdup (TYPE_FIELD_NAME (type, i)); | |
3278 | if (TYPE_FIELD_STATIC_HAS_ADDR (type, i)) | |
3279 | SET_FIELD_PHYSADDR (TYPE_FIELD (new_type, i), | |
3280 | TYPE_FIELD_STATIC_PHYSADDR (type, i)); | |
3281 | else if (TYPE_FIELD_STATIC (type, i)) | |
3282 | SET_FIELD_PHYSNAME (TYPE_FIELD (new_type, i), | |
3283 | xstrdup (TYPE_FIELD_STATIC_PHYSNAME (type, i))); | |
3284 | else | |
3285 | { | |
3286 | TYPE_FIELD_BITPOS (new_type, i) = TYPE_FIELD_BITPOS (type, i); | |
3287 | TYPE_FIELD_STATIC_KIND (new_type, i) = 0; | |
3288 | } | |
3289 | } | |
3290 | } | |
3291 | ||
3292 | /* Copy pointers to other types. */ | |
3293 | if (TYPE_TARGET_TYPE (type)) | |
3294 | TYPE_TARGET_TYPE (new_type) = copy_type_recursive (objfile, | |
3295 | TYPE_TARGET_TYPE (type), | |
3296 | copied_types); | |
3297 | if (TYPE_VPTR_BASETYPE (type)) | |
3298 | TYPE_VPTR_BASETYPE (new_type) = copy_type_recursive (objfile, | |
3299 | TYPE_VPTR_BASETYPE (type), | |
3300 | copied_types); | |
3301 | /* Maybe copy the type_specific bits. | |
3302 | ||
3303 | NOTE drow/2005-12-09: We do not copy the C++-specific bits like | |
3304 | base classes and methods. There's no fundamental reason why we | |
3305 | can't, but at the moment it is not needed. */ | |
3306 | ||
3307 | if (TYPE_CODE (type) == TYPE_CODE_FLT) | |
3308 | TYPE_FLOATFORMAT (new_type) == TYPE_FLOATFORMAT (type); | |
3309 | else if (TYPE_CODE (type) == TYPE_CODE_STRUCT | |
3310 | || TYPE_CODE (type) == TYPE_CODE_UNION | |
3311 | || TYPE_CODE (type) == TYPE_CODE_TEMPLATE | |
3312 | || TYPE_CODE (type) == TYPE_CODE_NAMESPACE) | |
3313 | INIT_CPLUS_SPECIFIC (new_type); | |
3314 | ||
3315 | return new_type; | |
3316 | } | |
3317 | ||
3318 | static void | |
3319 | build_gdbtypes (void) | |
3320 | { | |
3321 | builtin_type_void = | |
3322 | init_type (TYPE_CODE_VOID, 1, | |
3323 | 0, | |
3324 | "void", (struct objfile *) NULL); | |
3325 | builtin_type_char = | |
3326 | init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT, | |
3327 | (TYPE_FLAG_NOSIGN | |
3328 | | (TARGET_CHAR_SIGNED ? 0 : TYPE_FLAG_UNSIGNED)), | |
3329 | "char", (struct objfile *) NULL); | |
3330 | builtin_type_true_char = | |
3331 | init_type (TYPE_CODE_CHAR, TARGET_CHAR_BIT / TARGET_CHAR_BIT, | |
3332 | 0, | |
3333 | "true character", (struct objfile *) NULL); | |
3334 | builtin_type_signed_char = | |
3335 | init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT, | |
3336 | 0, | |
3337 | "signed char", (struct objfile *) NULL); | |
3338 | builtin_type_unsigned_char = | |
3339 | init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT, | |
3340 | TYPE_FLAG_UNSIGNED, | |
3341 | "unsigned char", (struct objfile *) NULL); | |
3342 | builtin_type_short = | |
3343 | init_type (TYPE_CODE_INT, TARGET_SHORT_BIT / TARGET_CHAR_BIT, | |
3344 | 0, | |
3345 | "short", (struct objfile *) NULL); | |
3346 | builtin_type_unsigned_short = | |
3347 | init_type (TYPE_CODE_INT, TARGET_SHORT_BIT / TARGET_CHAR_BIT, | |
3348 | TYPE_FLAG_UNSIGNED, | |
3349 | "unsigned short", (struct objfile *) NULL); | |
3350 | builtin_type_int = | |
3351 | init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT, | |
3352 | 0, | |
3353 | "int", (struct objfile *) NULL); | |
3354 | builtin_type_unsigned_int = | |
3355 | init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT, | |
3356 | TYPE_FLAG_UNSIGNED, | |
3357 | "unsigned int", (struct objfile *) NULL); | |
3358 | builtin_type_long = | |
3359 | init_type (TYPE_CODE_INT, TARGET_LONG_BIT / TARGET_CHAR_BIT, | |
3360 | 0, | |
3361 | "long", (struct objfile *) NULL); | |
3362 | builtin_type_unsigned_long = | |
3363 | init_type (TYPE_CODE_INT, TARGET_LONG_BIT / TARGET_CHAR_BIT, | |
3364 | TYPE_FLAG_UNSIGNED, | |
3365 | "unsigned long", (struct objfile *) NULL); | |
3366 | builtin_type_long_long = | |
3367 | init_type (TYPE_CODE_INT, TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT, | |
3368 | 0, | |
3369 | "long long", (struct objfile *) NULL); | |
3370 | builtin_type_unsigned_long_long = | |
3371 | init_type (TYPE_CODE_INT, TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT, | |
3372 | TYPE_FLAG_UNSIGNED, | |
3373 | "unsigned long long", (struct objfile *) NULL); | |
3374 | builtin_type_float = | |
3375 | init_type (TYPE_CODE_FLT, TARGET_FLOAT_BIT / TARGET_CHAR_BIT, | |
3376 | 0, | |
3377 | "float", (struct objfile *) NULL); | |
3378 | /* vinschen@redhat.com 2002-02-08: | |
3379 | The below lines are disabled since they are doing the wrong | |
3380 | thing for non-multiarch targets. They are setting the correct | |
3381 | type of floats for the target but while on multiarch targets | |
3382 | this is done everytime the architecture changes, it's done on | |
3383 | non-multiarch targets only on startup, leaving the wrong values | |
3384 | in even if the architecture changes (eg. from big-endian to | |
3385 | little-endian). */ | |
3386 | #if 0 | |
3387 | TYPE_FLOATFORMAT (builtin_type_float) = TARGET_FLOAT_FORMAT; | |
3388 | #endif | |
3389 | builtin_type_double = | |
3390 | init_type (TYPE_CODE_FLT, TARGET_DOUBLE_BIT / TARGET_CHAR_BIT, | |
3391 | 0, | |
3392 | "double", (struct objfile *) NULL); | |
3393 | #if 0 | |
3394 | TYPE_FLOATFORMAT (builtin_type_double) = TARGET_DOUBLE_FORMAT; | |
3395 | #endif | |
3396 | builtin_type_long_double = | |
3397 | init_type (TYPE_CODE_FLT, TARGET_LONG_DOUBLE_BIT / TARGET_CHAR_BIT, | |
3398 | 0, | |
3399 | "long double", (struct objfile *) NULL); | |
3400 | #if 0 | |
3401 | TYPE_FLOATFORMAT (builtin_type_long_double) = TARGET_LONG_DOUBLE_FORMAT; | |
3402 | #endif | |
3403 | builtin_type_complex = | |
3404 | init_type (TYPE_CODE_COMPLEX, 2 * TARGET_FLOAT_BIT / TARGET_CHAR_BIT, | |
3405 | 0, | |
3406 | "complex", (struct objfile *) NULL); | |
3407 | TYPE_TARGET_TYPE (builtin_type_complex) = builtin_type_float; | |
3408 | builtin_type_double_complex = | |
3409 | init_type (TYPE_CODE_COMPLEX, 2 * TARGET_DOUBLE_BIT / TARGET_CHAR_BIT, | |
3410 | 0, | |
3411 | "double complex", (struct objfile *) NULL); | |
3412 | TYPE_TARGET_TYPE (builtin_type_double_complex) = builtin_type_double; | |
3413 | builtin_type_string = | |
3414 | init_type (TYPE_CODE_STRING, TARGET_CHAR_BIT / TARGET_CHAR_BIT, | |
3415 | 0, | |
3416 | "string", (struct objfile *) NULL); | |
3417 | builtin_type_bool = | |
3418 | init_type (TYPE_CODE_BOOL, TARGET_CHAR_BIT / TARGET_CHAR_BIT, | |
3419 | 0, | |
3420 | "bool", (struct objfile *) NULL); | |
3421 | ||
3422 | /* Add user knob for controlling resolution of opaque types */ | |
3423 | add_setshow_boolean_cmd ("opaque-type-resolution", class_support, | |
3424 | &opaque_type_resolution, _("\ | |
3425 | Set resolution of opaque struct/class/union types (if set before loading symbols)."), _("\ | |
3426 | Show resolution of opaque struct/class/union types (if set before loading symbols)."), NULL, | |
3427 | NULL, | |
3428 | show_opaque_type_resolution, | |
3429 | &setlist, &showlist); | |
3430 | opaque_type_resolution = 1; | |
3431 | ||
3432 | /* Build SIMD types. */ | |
3433 | builtin_type_v4sf | |
3434 | = init_simd_type ("__builtin_v4sf", builtin_type_float, "f", 4); | |
3435 | builtin_type_v4si | |
3436 | = init_simd_type ("__builtin_v4si", builtin_type_int32, "f", 4); | |
3437 | builtin_type_v16qi | |
3438 | = init_simd_type ("__builtin_v16qi", builtin_type_int8, "f", 16); | |
3439 | builtin_type_v8qi | |
3440 | = init_simd_type ("__builtin_v8qi", builtin_type_int8, "f", 8); | |
3441 | builtin_type_v8hi | |
3442 | = init_simd_type ("__builtin_v8hi", builtin_type_int16, "f", 8); | |
3443 | builtin_type_v4hi | |
3444 | = init_simd_type ("__builtin_v4hi", builtin_type_int16, "f", 4); | |
3445 | builtin_type_v2si | |
3446 | = init_simd_type ("__builtin_v2si", builtin_type_int32, "f", 2); | |
3447 | ||
3448 | /* 128 bit vectors. */ | |
3449 | builtin_type_v2_double = init_vector_type (builtin_type_double, 2); | |
3450 | builtin_type_v4_float = init_vector_type (builtin_type_float, 4); | |
3451 | builtin_type_v2_int64 = init_vector_type (builtin_type_int64, 2); | |
3452 | builtin_type_v4_int32 = init_vector_type (builtin_type_int32, 4); | |
3453 | builtin_type_v8_int16 = init_vector_type (builtin_type_int16, 8); | |
3454 | builtin_type_v16_int8 = init_vector_type (builtin_type_int8, 16); | |
3455 | /* 64 bit vectors. */ | |
3456 | builtin_type_v2_float = init_vector_type (builtin_type_float, 2); | |
3457 | builtin_type_v2_int32 = init_vector_type (builtin_type_int32, 2); | |
3458 | builtin_type_v4_int16 = init_vector_type (builtin_type_int16, 4); | |
3459 | builtin_type_v8_int8 = init_vector_type (builtin_type_int8, 8); | |
3460 | ||
3461 | /* Vector types. */ | |
3462 | builtin_type_vec64 = build_builtin_type_vec64 (); | |
3463 | builtin_type_vec128 = build_builtin_type_vec128 (); | |
3464 | ||
3465 | /* Pointer/Address types. */ | |
3466 | ||
3467 | /* NOTE: on some targets, addresses and pointers are not necessarily | |
3468 | the same --- for example, on the D10V, pointers are 16 bits long, | |
3469 | but addresses are 32 bits long. See doc/gdbint.texinfo, | |
3470 | ``Pointers Are Not Always Addresses''. | |
3471 | ||
3472 | The upshot is: | |
3473 | - gdb's `struct type' always describes the target's | |
3474 | representation. | |
3475 | - gdb's `struct value' objects should always hold values in | |
3476 | target form. | |
3477 | - gdb's CORE_ADDR values are addresses in the unified virtual | |
3478 | address space that the assembler and linker work with. Thus, | |
3479 | since target_read_memory takes a CORE_ADDR as an argument, it | |
3480 | can access any memory on the target, even if the processor has | |
3481 | separate code and data address spaces. | |
3482 | ||
3483 | So, for example: | |
3484 | - If v is a value holding a D10V code pointer, its contents are | |
3485 | in target form: a big-endian address left-shifted two bits. | |
3486 | - If p is a D10V pointer type, TYPE_LENGTH (p) == 2, just as | |
3487 | sizeof (void *) == 2 on the target. | |
3488 | ||
3489 | In this context, builtin_type_CORE_ADDR is a bit odd: it's a | |
3490 | target type for a value the target will never see. It's only | |
3491 | used to hold the values of (typeless) linker symbols, which are | |
3492 | indeed in the unified virtual address space. */ | |
3493 | builtin_type_void_data_ptr = make_pointer_type (builtin_type_void, NULL); | |
3494 | builtin_type_void_func_ptr | |
3495 | = lookup_pointer_type (lookup_function_type (builtin_type_void)); | |
3496 | builtin_type_CORE_ADDR = | |
3497 | init_type (TYPE_CODE_INT, TARGET_ADDR_BIT / 8, | |
3498 | TYPE_FLAG_UNSIGNED, | |
3499 | "__CORE_ADDR", (struct objfile *) NULL); | |
3500 | builtin_type_bfd_vma = | |
3501 | init_type (TYPE_CODE_INT, TARGET_BFD_VMA_BIT / 8, | |
3502 | TYPE_FLAG_UNSIGNED, | |
3503 | "__bfd_vma", (struct objfile *) NULL); | |
3504 | } | |
3505 | ||
3506 | static struct gdbarch_data *gdbtypes_data; | |
3507 | ||
3508 | const struct builtin_type * | |
3509 | builtin_type (struct gdbarch *gdbarch) | |
3510 | { | |
3511 | return gdbarch_data (gdbarch, gdbtypes_data); | |
3512 | } | |
3513 | ||
3514 | ||
3515 | static struct type * | |
3516 | build_flt (int bit, char *name, const struct floatformat *floatformat) | |
3517 | { | |
3518 | struct type *t; | |
3519 | if (bit <= 0 || floatformat == NULL) | |
3520 | { | |
3521 | gdb_assert (builtin_type_error != NULL); | |
3522 | return builtin_type_error; | |
3523 | } | |
3524 | t = init_type (TYPE_CODE_FLT, bit / TARGET_CHAR_BIT, | |
3525 | 0, name, (struct objfile *) NULL); | |
3526 | TYPE_FLOATFORMAT (t) = floatformat; | |
3527 | return t; | |
3528 | } | |
3529 | ||
3530 | static struct type * | |
3531 | build_complex (int bit, char *name, struct type *target_type) | |
3532 | { | |
3533 | struct type *t; | |
3534 | if (bit <= 0 || target_type == builtin_type_error) | |
3535 | { | |
3536 | gdb_assert (builtin_type_error != NULL); | |
3537 | return builtin_type_error; | |
3538 | } | |
3539 | t = init_type (TYPE_CODE_COMPLEX, 2 * bit / TARGET_CHAR_BIT, | |
3540 | 0, name, (struct objfile *) NULL); | |
3541 | TYPE_TARGET_TYPE (t) = target_type; | |
3542 | return t; | |
3543 | } | |
3544 | ||
3545 | static void * | |
3546 | gdbtypes_post_init (struct gdbarch *gdbarch) | |
3547 | { | |
3548 | struct builtin_type *builtin_type | |
3549 | = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct builtin_type); | |
3550 | ||
3551 | builtin_type->builtin_void = | |
3552 | init_type (TYPE_CODE_VOID, 1, | |
3553 | 0, | |
3554 | "void", (struct objfile *) NULL); | |
3555 | builtin_type->builtin_char = | |
3556 | init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT, | |
3557 | (TYPE_FLAG_NOSIGN | |
3558 | | (TARGET_CHAR_SIGNED ? 0 : TYPE_FLAG_UNSIGNED)), | |
3559 | "char", (struct objfile *) NULL); | |
3560 | builtin_type->builtin_true_char = | |
3561 | init_type (TYPE_CODE_CHAR, TARGET_CHAR_BIT / TARGET_CHAR_BIT, | |
3562 | 0, | |
3563 | "true character", (struct objfile *) NULL); | |
3564 | builtin_type->builtin_signed_char = | |
3565 | init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT, | |
3566 | 0, | |
3567 | "signed char", (struct objfile *) NULL); | |
3568 | builtin_type->builtin_unsigned_char = | |
3569 | init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT, | |
3570 | TYPE_FLAG_UNSIGNED, | |
3571 | "unsigned char", (struct objfile *) NULL); | |
3572 | builtin_type->builtin_short = | |
3573 | init_type (TYPE_CODE_INT, TARGET_SHORT_BIT / TARGET_CHAR_BIT, | |
3574 | 0, | |
3575 | "short", (struct objfile *) NULL); | |
3576 | builtin_type->builtin_unsigned_short = | |
3577 | init_type (TYPE_CODE_INT, TARGET_SHORT_BIT / TARGET_CHAR_BIT, | |
3578 | TYPE_FLAG_UNSIGNED, | |
3579 | "unsigned short", (struct objfile *) NULL); | |
3580 | builtin_type->builtin_int = | |
3581 | init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT, | |
3582 | 0, | |
3583 | "int", (struct objfile *) NULL); | |
3584 | builtin_type->builtin_unsigned_int = | |
3585 | init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT, | |
3586 | TYPE_FLAG_UNSIGNED, | |
3587 | "unsigned int", (struct objfile *) NULL); | |
3588 | builtin_type->builtin_long = | |
3589 | init_type (TYPE_CODE_INT, TARGET_LONG_BIT / TARGET_CHAR_BIT, | |
3590 | 0, | |
3591 | "long", (struct objfile *) NULL); | |
3592 | builtin_type->builtin_unsigned_long = | |
3593 | init_type (TYPE_CODE_INT, TARGET_LONG_BIT / TARGET_CHAR_BIT, | |
3594 | TYPE_FLAG_UNSIGNED, | |
3595 | "unsigned long", (struct objfile *) NULL); | |
3596 | builtin_type->builtin_long_long = | |
3597 | init_type (TYPE_CODE_INT, TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT, | |
3598 | 0, | |
3599 | "long long", (struct objfile *) NULL); | |
3600 | builtin_type->builtin_unsigned_long_long = | |
3601 | init_type (TYPE_CODE_INT, TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT, | |
3602 | TYPE_FLAG_UNSIGNED, | |
3603 | "unsigned long long", (struct objfile *) NULL); | |
3604 | builtin_type->builtin_float | |
3605 | = build_flt (gdbarch_float_bit (gdbarch), "float", | |
3606 | gdbarch_float_format (gdbarch)); | |
3607 | builtin_type->builtin_double | |
3608 | = build_flt (gdbarch_double_bit (gdbarch), "double", | |
3609 | gdbarch_double_format (gdbarch)); | |
3610 | builtin_type->builtin_long_double | |
3611 | = build_flt (gdbarch_long_double_bit (gdbarch), "long double", | |
3612 | gdbarch_long_double_format (gdbarch)); | |
3613 | builtin_type->builtin_complex | |
3614 | = build_complex (gdbarch_float_bit (gdbarch), "complex", | |
3615 | builtin_type->builtin_float); | |
3616 | builtin_type->builtin_double_complex | |
3617 | = build_complex (gdbarch_double_bit (gdbarch), "double complex", | |
3618 | builtin_type->builtin_double); | |
3619 | builtin_type->builtin_string = | |
3620 | init_type (TYPE_CODE_STRING, TARGET_CHAR_BIT / TARGET_CHAR_BIT, | |
3621 | 0, | |
3622 | "string", (struct objfile *) NULL); | |
3623 | builtin_type->builtin_bool = | |
3624 | init_type (TYPE_CODE_BOOL, TARGET_CHAR_BIT / TARGET_CHAR_BIT, | |
3625 | 0, | |
3626 | "bool", (struct objfile *) NULL); | |
3627 | ||
3628 | /* Pointer/Address types. */ | |
3629 | ||
3630 | /* NOTE: on some targets, addresses and pointers are not necessarily | |
3631 | the same --- for example, on the D10V, pointers are 16 bits long, | |
3632 | but addresses are 32 bits long. See doc/gdbint.texinfo, | |
3633 | ``Pointers Are Not Always Addresses''. | |
3634 | ||
3635 | The upshot is: | |
3636 | - gdb's `struct type' always describes the target's | |
3637 | representation. | |
3638 | - gdb's `struct value' objects should always hold values in | |
3639 | target form. | |
3640 | - gdb's CORE_ADDR values are addresses in the unified virtual | |
3641 | address space that the assembler and linker work with. Thus, | |
3642 | since target_read_memory takes a CORE_ADDR as an argument, it | |
3643 | can access any memory on the target, even if the processor has | |
3644 | separate code and data address spaces. | |
3645 | ||
3646 | So, for example: | |
3647 | - If v is a value holding a D10V code pointer, its contents are | |
3648 | in target form: a big-endian address left-shifted two bits. | |
3649 | - If p is a D10V pointer type, TYPE_LENGTH (p) == 2, just as | |
3650 | sizeof (void *) == 2 on the target. | |
3651 | ||
3652 | In this context, builtin_type->CORE_ADDR is a bit odd: it's a | |
3653 | target type for a value the target will never see. It's only | |
3654 | used to hold the values of (typeless) linker symbols, which are | |
3655 | indeed in the unified virtual address space. */ | |
3656 | builtin_type->builtin_data_ptr | |
3657 | = make_pointer_type (builtin_type->builtin_void, NULL); | |
3658 | builtin_type->builtin_func_ptr | |
3659 | = lookup_pointer_type (lookup_function_type (builtin_type->builtin_void)); | |
3660 | builtin_type->builtin_core_addr = | |
3661 | init_type (TYPE_CODE_INT, TARGET_ADDR_BIT / 8, | |
3662 | TYPE_FLAG_UNSIGNED, | |
3663 | "__CORE_ADDR", (struct objfile *) NULL); | |
3664 | ||
3665 | return builtin_type; | |
3666 | } | |
3667 | ||
3668 | extern void _initialize_gdbtypes (void); | |
3669 | void | |
3670 | _initialize_gdbtypes (void) | |
3671 | { | |
3672 | struct cmd_list_element *c; | |
3673 | ||
3674 | /* FIXME: Why don't the following types need to be arch-swapped? | |
3675 | See the comment at the top of the calls to | |
3676 | DEPRECATED_REGISTER_GDBARCH_SWAP below. */ | |
3677 | builtin_type_int0 = | |
3678 | init_type (TYPE_CODE_INT, 0 / 8, | |
3679 | 0, | |
3680 | "int0_t", (struct objfile *) NULL); | |
3681 | builtin_type_int8 = | |
3682 | init_type (TYPE_CODE_INT, 8 / 8, | |
3683 | 0, | |
3684 | "int8_t", (struct objfile *) NULL); | |
3685 | builtin_type_uint8 = | |
3686 | init_type (TYPE_CODE_INT, 8 / 8, | |
3687 | TYPE_FLAG_UNSIGNED, | |
3688 | "uint8_t", (struct objfile *) NULL); | |
3689 | builtin_type_int16 = | |
3690 | init_type (TYPE_CODE_INT, 16 / 8, | |
3691 | 0, | |
3692 | "int16_t", (struct objfile *) NULL); | |
3693 | builtin_type_uint16 = | |
3694 | init_type (TYPE_CODE_INT, 16 / 8, | |
3695 | TYPE_FLAG_UNSIGNED, | |
3696 | "uint16_t", (struct objfile *) NULL); | |
3697 | builtin_type_int32 = | |
3698 | init_type (TYPE_CODE_INT, 32 / 8, | |
3699 | 0, | |
3700 | "int32_t", (struct objfile *) NULL); | |
3701 | builtin_type_uint32 = | |
3702 | init_type (TYPE_CODE_INT, 32 / 8, | |
3703 | TYPE_FLAG_UNSIGNED, | |
3704 | "uint32_t", (struct objfile *) NULL); | |
3705 | builtin_type_int64 = | |
3706 | init_type (TYPE_CODE_INT, 64 / 8, | |
3707 | 0, | |
3708 | "int64_t", (struct objfile *) NULL); | |
3709 | builtin_type_uint64 = | |
3710 | init_type (TYPE_CODE_INT, 64 / 8, | |
3711 | TYPE_FLAG_UNSIGNED, | |
3712 | "uint64_t", (struct objfile *) NULL); | |
3713 | builtin_type_int128 = | |
3714 | init_type (TYPE_CODE_INT, 128 / 8, | |
3715 | 0, | |
3716 | "int128_t", (struct objfile *) NULL); | |
3717 | builtin_type_uint128 = | |
3718 | init_type (TYPE_CODE_INT, 128 / 8, | |
3719 | TYPE_FLAG_UNSIGNED, | |
3720 | "uint128_t", (struct objfile *) NULL); | |
3721 | ||
3722 | build_gdbtypes (); | |
3723 | ||
3724 | gdbtypes_data = gdbarch_data_register_post_init (gdbtypes_post_init); | |
3725 | ||
3726 | /* FIXME - For the moment, handle types by swapping them in and out. | |
3727 | Should be using the per-architecture data-pointer and a large | |
3728 | struct. | |
3729 | ||
3730 | Note that any type T that we might create a 'T *' type for must | |
3731 | be arch-swapped: we cache a type's 'T *' type in the pointer_type | |
3732 | field, so if we change architectures but don't swap T, then | |
3733 | lookup_pointer_type will start handing out pointer types made for | |
3734 | a different architecture. */ | |
3735 | DEPRECATED_REGISTER_GDBARCH_SWAP (builtin_type_void); | |
3736 | DEPRECATED_REGISTER_GDBARCH_SWAP (builtin_type_char); | |
3737 | DEPRECATED_REGISTER_GDBARCH_SWAP (builtin_type_short); | |
3738 | DEPRECATED_REGISTER_GDBARCH_SWAP (builtin_type_int); | |
3739 | DEPRECATED_REGISTER_GDBARCH_SWAP (builtin_type_long); | |
3740 | DEPRECATED_REGISTER_GDBARCH_SWAP (builtin_type_long_long); | |
3741 | DEPRECATED_REGISTER_GDBARCH_SWAP (builtin_type_signed_char); | |
3742 | DEPRECATED_REGISTER_GDBARCH_SWAP (builtin_type_unsigned_char); | |
3743 | DEPRECATED_REGISTER_GDBARCH_SWAP (builtin_type_unsigned_short); | |
3744 | DEPRECATED_REGISTER_GDBARCH_SWAP (builtin_type_unsigned_int); | |
3745 | DEPRECATED_REGISTER_GDBARCH_SWAP (builtin_type_unsigned_long); | |
3746 | DEPRECATED_REGISTER_GDBARCH_SWAP (builtin_type_unsigned_long_long); | |
3747 | DEPRECATED_REGISTER_GDBARCH_SWAP (builtin_type_float); | |
3748 | DEPRECATED_REGISTER_GDBARCH_SWAP (builtin_type_double); | |
3749 | DEPRECATED_REGISTER_GDBARCH_SWAP (builtin_type_long_double); | |
3750 | DEPRECATED_REGISTER_GDBARCH_SWAP (builtin_type_complex); | |
3751 | DEPRECATED_REGISTER_GDBARCH_SWAP (builtin_type_double_complex); | |
3752 | DEPRECATED_REGISTER_GDBARCH_SWAP (builtin_type_string); | |
3753 | DEPRECATED_REGISTER_GDBARCH_SWAP (builtin_type_v4sf); | |
3754 | DEPRECATED_REGISTER_GDBARCH_SWAP (builtin_type_v4si); | |
3755 | DEPRECATED_REGISTER_GDBARCH_SWAP (builtin_type_v16qi); | |
3756 | DEPRECATED_REGISTER_GDBARCH_SWAP (builtin_type_v8qi); | |
3757 | DEPRECATED_REGISTER_GDBARCH_SWAP (builtin_type_v8hi); | |
3758 | DEPRECATED_REGISTER_GDBARCH_SWAP (builtin_type_v4hi); | |
3759 | DEPRECATED_REGISTER_GDBARCH_SWAP (builtin_type_v2si); | |
3760 | DEPRECATED_REGISTER_GDBARCH_SWAP (builtin_type_v2_double); | |
3761 | DEPRECATED_REGISTER_GDBARCH_SWAP (builtin_type_v4_float); | |
3762 | DEPRECATED_REGISTER_GDBARCH_SWAP (builtin_type_v2_int64); | |
3763 | DEPRECATED_REGISTER_GDBARCH_SWAP (builtin_type_v4_int32); | |
3764 | DEPRECATED_REGISTER_GDBARCH_SWAP (builtin_type_v8_int16); | |
3765 | DEPRECATED_REGISTER_GDBARCH_SWAP (builtin_type_v16_int8); | |
3766 | DEPRECATED_REGISTER_GDBARCH_SWAP (builtin_type_v2_float); | |
3767 | DEPRECATED_REGISTER_GDBARCH_SWAP (builtin_type_v2_int32); | |
3768 | DEPRECATED_REGISTER_GDBARCH_SWAP (builtin_type_v8_int8); | |
3769 | DEPRECATED_REGISTER_GDBARCH_SWAP (builtin_type_v4_int16); | |
3770 | DEPRECATED_REGISTER_GDBARCH_SWAP (builtin_type_vec128); | |
3771 | DEPRECATED_REGISTER_GDBARCH_SWAP (builtin_type_void_data_ptr); | |
3772 | DEPRECATED_REGISTER_GDBARCH_SWAP (builtin_type_void_func_ptr); | |
3773 | DEPRECATED_REGISTER_GDBARCH_SWAP (builtin_type_CORE_ADDR); | |
3774 | DEPRECATED_REGISTER_GDBARCH_SWAP (builtin_type_bfd_vma); | |
3775 | deprecated_register_gdbarch_swap (NULL, 0, build_gdbtypes); | |
3776 | ||
3777 | /* Note: These types do not need to be swapped - they are target | |
3778 | neutral. FIXME: Are you sure? See the comment above the calls | |
3779 | to DEPRECATED_REGISTER_GDBARCH_SWAP above. */ | |
3780 | builtin_type_ieee_single_big = | |
3781 | init_type (TYPE_CODE_FLT, floatformat_ieee_single_big.totalsize / 8, | |
3782 | 0, "builtin_type_ieee_single_big", NULL); | |
3783 | TYPE_FLOATFORMAT (builtin_type_ieee_single_big) = &floatformat_ieee_single_big; | |
3784 | builtin_type_ieee_single_little = | |
3785 | init_type (TYPE_CODE_FLT, floatformat_ieee_single_little.totalsize / 8, | |
3786 | 0, "builtin_type_ieee_single_little", NULL); | |
3787 | TYPE_FLOATFORMAT (builtin_type_ieee_single_little) = &floatformat_ieee_single_little; | |
3788 | builtin_type_ieee_single[BFD_ENDIAN_BIG] | |
3789 | = build_flt (floatformat_ieee_single_big.totalsize, | |
3790 | "builtin_type_ieee_single_big", | |
3791 | &floatformat_ieee_single_big); | |
3792 | builtin_type_ieee_single[BFD_ENDIAN_LITTLE] | |
3793 | = build_flt (floatformat_ieee_single_little.totalsize, | |
3794 | "builtin_type_ieee_single_little", | |
3795 | &floatformat_ieee_single_little); | |
3796 | builtin_type_ieee_double_big = | |
3797 | init_type (TYPE_CODE_FLT, floatformat_ieee_double_big.totalsize / 8, | |
3798 | 0, "builtin_type_ieee_double_big", NULL); | |
3799 | TYPE_FLOATFORMAT (builtin_type_ieee_double_big) = &floatformat_ieee_double_big; | |
3800 | builtin_type_ieee_double_little = | |
3801 | init_type (TYPE_CODE_FLT, floatformat_ieee_double_little.totalsize / 8, | |
3802 | 0, "builtin_type_ieee_double_little", NULL); | |
3803 | TYPE_FLOATFORMAT (builtin_type_ieee_double_little) = &floatformat_ieee_double_little; | |
3804 | builtin_type_ieee_double[BFD_ENDIAN_BIG] | |
3805 | = build_flt (floatformat_ieee_double_big.totalsize, | |
3806 | "builtin_type_ieee_double_big", | |
3807 | &floatformat_ieee_double_big); | |
3808 | builtin_type_ieee_double[BFD_ENDIAN_LITTLE] | |
3809 | = build_flt (floatformat_ieee_double_little.totalsize, | |
3810 | "builtin_type_ieee_double_little", | |
3811 | &floatformat_ieee_double_little); | |
3812 | builtin_type_ieee_double_littlebyte_bigword = | |
3813 | init_type (TYPE_CODE_FLT, floatformat_ieee_double_littlebyte_bigword.totalsize / 8, | |
3814 | 0, "builtin_type_ieee_double_littlebyte_bigword", NULL); | |
3815 | TYPE_FLOATFORMAT (builtin_type_ieee_double_littlebyte_bigword) = &floatformat_ieee_double_littlebyte_bigword; | |
3816 | builtin_type_i387_ext = | |
3817 | init_type (TYPE_CODE_FLT, floatformat_i387_ext.totalsize / 8, | |
3818 | 0, "builtin_type_i387_ext", NULL); | |
3819 | TYPE_FLOATFORMAT (builtin_type_i387_ext) = &floatformat_i387_ext; | |
3820 | builtin_type_m68881_ext = | |
3821 | init_type (TYPE_CODE_FLT, floatformat_m68881_ext.totalsize / 8, | |
3822 | 0, "builtin_type_m68881_ext", NULL); | |
3823 | TYPE_FLOATFORMAT (builtin_type_m68881_ext) = &floatformat_m68881_ext; | |
3824 | builtin_type_i960_ext = | |
3825 | init_type (TYPE_CODE_FLT, floatformat_i960_ext.totalsize / 8, | |
3826 | 0, "builtin_type_i960_ext", NULL); | |
3827 | TYPE_FLOATFORMAT (builtin_type_i960_ext) = &floatformat_i960_ext; | |
3828 | builtin_type_m88110_ext = | |
3829 | init_type (TYPE_CODE_FLT, floatformat_m88110_ext.totalsize / 8, | |
3830 | 0, "builtin_type_m88110_ext", NULL); | |
3831 | TYPE_FLOATFORMAT (builtin_type_m88110_ext) = &floatformat_m88110_ext; | |
3832 | builtin_type_m88110_harris_ext = | |
3833 | init_type (TYPE_CODE_FLT, floatformat_m88110_harris_ext.totalsize / 8, | |
3834 | 0, "builtin_type_m88110_harris_ext", NULL); | |
3835 | TYPE_FLOATFORMAT (builtin_type_m88110_harris_ext) = &floatformat_m88110_harris_ext; | |
3836 | builtin_type_arm_ext_big = | |
3837 | init_type (TYPE_CODE_FLT, floatformat_arm_ext_big.totalsize / 8, | |
3838 | 0, "builtin_type_arm_ext_big", NULL); | |
3839 | TYPE_FLOATFORMAT (builtin_type_arm_ext_big) = &floatformat_arm_ext_big; | |
3840 | builtin_type_arm_ext_littlebyte_bigword = | |
3841 | init_type (TYPE_CODE_FLT, floatformat_arm_ext_littlebyte_bigword.totalsize / 8, | |
3842 | 0, "builtin_type_arm_ext_littlebyte_bigword", NULL); | |
3843 | TYPE_FLOATFORMAT (builtin_type_arm_ext_littlebyte_bigword) = &floatformat_arm_ext_littlebyte_bigword; | |
3844 | builtin_type_arm_ext[BFD_ENDIAN_BIG] | |
3845 | = build_flt (floatformat_arm_ext_big.totalsize, | |
3846 | "builtin_type_arm_ext_big", | |
3847 | &floatformat_arm_ext_big); | |
3848 | builtin_type_arm_ext[BFD_ENDIAN_LITTLE] | |
3849 | = build_flt (floatformat_arm_ext_littlebyte_bigword.totalsize, | |
3850 | "builtin_type_arm_ext_littlebyte_bigword", | |
3851 | &floatformat_arm_ext_littlebyte_bigword); | |
3852 | builtin_type_ia64_spill_big = | |
3853 | init_type (TYPE_CODE_FLT, floatformat_ia64_spill_big.totalsize / 8, | |
3854 | 0, "builtin_type_ia64_spill_big", NULL); | |
3855 | TYPE_FLOATFORMAT (builtin_type_ia64_spill_big) = &floatformat_ia64_spill_big; | |
3856 | builtin_type_ia64_spill_little = | |
3857 | init_type (TYPE_CODE_FLT, floatformat_ia64_spill_little.totalsize / 8, | |
3858 | 0, "builtin_type_ia64_spill_little", NULL); | |
3859 | TYPE_FLOATFORMAT (builtin_type_ia64_spill_little) = &floatformat_ia64_spill_little; | |
3860 | builtin_type_ia64_spill[BFD_ENDIAN_BIG] | |
3861 | = build_flt (floatformat_ia64_spill_big.totalsize, | |
3862 | "builtin_type_ia64_spill_big", | |
3863 | &floatformat_ia64_spill_big); | |
3864 | builtin_type_ia64_spill[BFD_ENDIAN_LITTLE] | |
3865 | = build_flt (floatformat_ia64_spill_little.totalsize, | |
3866 | "builtin_type_ia64_spill_little", | |
3867 | &floatformat_ia64_spill_little); | |
3868 | builtin_type_ia64_quad_big = | |
3869 | init_type (TYPE_CODE_FLT, floatformat_ia64_quad_big.totalsize / 8, | |
3870 | 0, "builtin_type_ia64_quad_big", NULL); | |
3871 | TYPE_FLOATFORMAT (builtin_type_ia64_quad_big) = &floatformat_ia64_quad_big; | |
3872 | builtin_type_ia64_quad_little = | |
3873 | init_type (TYPE_CODE_FLT, floatformat_ia64_quad_little.totalsize / 8, | |
3874 | 0, "builtin_type_ia64_quad_little", NULL); | |
3875 | TYPE_FLOATFORMAT (builtin_type_ia64_quad_little) = &floatformat_ia64_quad_little; | |
3876 | builtin_type_ia64_quad[BFD_ENDIAN_BIG] | |
3877 | = build_flt (floatformat_ia64_quad_big.totalsize, | |
3878 | "builtin_type_ia64_quad_big", | |
3879 | &floatformat_ia64_quad_big); | |
3880 | builtin_type_ia64_quad[BFD_ENDIAN_LITTLE] | |
3881 | = build_flt (floatformat_ia64_quad_little.totalsize, | |
3882 | "builtin_type_ia64_quad_little", | |
3883 | &floatformat_ia64_quad_little); | |
3884 | ||
3885 | add_setshow_zinteger_cmd ("overload", no_class, &overload_debug, _("\ | |
3886 | Set debugging of C++ overloading."), _("\ | |
3887 | Show debugging of C++ overloading."), _("\ | |
3888 | When enabled, ranking of the functions is displayed."), | |
3889 | NULL, | |
3890 | show_overload_debug, | |
3891 | &setdebuglist, &showdebuglist); | |
3892 | } |