Commit | Line | Data |
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c0302457 | 1 | /* Build symbol tables in GDB's internal format. |
93297ea0 JG |
2 | Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992 |
3 | Free Software Foundation, Inc. | |
c0302457 JG |
4 | |
5 | This file is part of GDB. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
20 | ||
21 | /* This module provides subroutines used for creating and adding to | |
22 | the symbol table. These routines are called from various symbol- | |
23 | file-reading routines. | |
24 | ||
25 | They originated in dbxread.c of gdb-4.2, and were split out to | |
26 | make xcoffread.c more maintainable by sharing code. */ | |
27 | ||
28 | #include "defs.h" | |
c0302457 JG |
29 | #include "obstack.h" |
30 | #include "symtab.h" | |
1ab3bf1b | 31 | #include "gdbtypes.h" |
c0302457 JG |
32 | #include "breakpoint.h" |
33 | #include "gdbcore.h" /* for bfd stuff for symfile.h */ | |
34 | #include "symfile.h" /* Needed for "struct complaint" */ | |
5e2e79f8 FF |
35 | #include "objfiles.h" |
36 | #include "aout/stab_gnu.h" /* We always use GNU stabs, not native */ | |
c0302457 JG |
37 | #include <string.h> |
38 | #include <ctype.h> | |
39 | ||
40 | /* Ask buildsym.h to define the vars it normally declares `extern'. */ | |
41 | #define EXTERN /**/ | |
42 | #include "buildsym.h" /* Our own declarations */ | |
43 | #undef EXTERN | |
44 | ||
1ab3bf1b JG |
45 | static void |
46 | patch_block_stabs PARAMS ((struct pending *, struct pending_stabs *, | |
47 | struct objfile *)); | |
c0302457 | 48 | |
1ab3bf1b JG |
49 | static void |
50 | read_huge_number PARAMS ((char **, int, long *, int *)); | |
51 | ||
2b5a8d9c | 52 | struct type * |
1ab3bf1b JG |
53 | dbx_alloc_type PARAMS ((int [2], struct objfile *)); |
54 | ||
55 | static int | |
56 | compare_line_numbers PARAMS ((const void *, const void *)); | |
57 | ||
58 | static struct blockvector * | |
59 | make_blockvector PARAMS ((struct objfile *)); | |
60 | ||
61 | static void | |
62 | fix_common_block PARAMS ((struct symbol *, int)); | |
63 | ||
64 | static void | |
65 | cleanup_undefined_types PARAMS ((void)); | |
66 | ||
67 | static struct type * | |
68 | read_range_type PARAMS ((char **, int [2], struct objfile *)); | |
abefb1f1 | 69 | |
93297ea0 JG |
70 | static struct type * |
71 | read_sun_builtin_type PARAMS ((char **, int [2], struct objfile *)); | |
72 | ||
73 | static struct type * | |
74 | read_sun_floating_type PARAMS ((char **, int [2], struct objfile *)); | |
75 | ||
1ab3bf1b JG |
76 | static struct type * |
77 | read_enum_type PARAMS ((char **, struct type *, struct objfile *)); | |
78 | ||
79 | static struct type * | |
80 | read_struct_type PARAMS ((char **, struct type *, struct objfile *)); | |
81 | ||
82 | static struct type * | |
83 | read_array_type PARAMS ((char **, struct type *, struct objfile *)); | |
84 | ||
85 | static struct type ** | |
86 | read_args PARAMS ((char **, int, struct objfile *)); | |
87 | ||
88 | \f | |
c0302457 JG |
89 | |
90 | static const char vptr_name[] = { '_','v','p','t','r',CPLUS_MARKER,'\0' }; | |
91 | static const char vb_name[] = { '_','v','b',CPLUS_MARKER,'\0' }; | |
92 | ||
93 | /* Define this as 1 if a pcc declaration of a char or short argument | |
94 | gives the correct address. Otherwise assume pcc gives the | |
95 | address of the corresponding int, which is not the same on a | |
96 | big-endian machine. */ | |
97 | ||
98 | #ifndef BELIEVE_PCC_PROMOTION | |
99 | #define BELIEVE_PCC_PROMOTION 0 | |
100 | #endif | |
101 | ||
2a5ec41d JG |
102 | /* During some calls to read_type (and thus to read_range_type), this |
103 | contains the name of the type being defined. Range types are only | |
104 | used in C as basic types. We use the name to distinguish the otherwise | |
105 | identical basic types "int" and "long" and their unsigned versions. | |
106 | FIXME, this should disappear with better type management. */ | |
107 | ||
108 | static char *long_kludge_name; | |
109 | ||
c0302457 JG |
110 | /* Make a list of forward references which haven't been defined. */ |
111 | static struct type **undef_types; | |
112 | static int undef_types_allocated, undef_types_length; | |
113 | ||
4137c5fc JG |
114 | /* Initial sizes of data structures. These are realloc'd larger if needed, |
115 | and realloc'd down to the size actually used, when completed. */ | |
116 | ||
117 | #define INITIAL_CONTEXT_STACK_SIZE 10 | |
118 | #define INITIAL_TYPE_VECTOR_LENGTH 160 | |
119 | #define INITIAL_LINE_VECTOR_LENGTH 1000 | |
c0302457 JG |
120 | \f |
121 | /* Complaints about the symbols we have encountered. */ | |
122 | ||
123 | struct complaint innerblock_complaint = | |
124 | {"inner block not inside outer block in %s", 0, 0}; | |
125 | ||
76512886 JG |
126 | struct complaint innerblock_anon_complaint = |
127 | {"inner block not inside outer block", 0, 0}; | |
128 | ||
c0302457 | 129 | struct complaint blockvector_complaint = |
76512886 | 130 | {"block at 0x%x out of order", 0, 0}; |
c0302457 JG |
131 | |
132 | #if 0 | |
133 | struct complaint dbx_class_complaint = | |
134 | {"encountered DBX-style class variable debugging information.\n\ | |
135 | You seem to have compiled your program with \ | |
136 | \"g++ -g0\" instead of \"g++ -g\".\n\ | |
137 | Therefore GDB will not know about your class variables", 0, 0}; | |
138 | #endif | |
139 | ||
f1d77e90 JG |
140 | struct complaint invalid_cpp_abbrev_complaint = |
141 | {"invalid C++ abbreviation `%s'", 0, 0}; | |
142 | ||
143 | struct complaint invalid_cpp_type_complaint = | |
144 | {"C++ abbreviated type name unknown at symtab pos %d", 0, 0}; | |
145 | ||
146 | struct complaint member_fn_complaint = | |
147 | {"member function type missing, got '%c'", 0, 0}; | |
148 | ||
c0302457 | 149 | struct complaint const_vol_complaint = |
f1d77e90 | 150 | {"const/volatile indicator missing, got '%c'", 0, 0}; |
c0302457 JG |
151 | |
152 | struct complaint error_type_complaint = | |
153 | {"debug info mismatch between compiler and debugger", 0, 0}; | |
154 | ||
155 | struct complaint invalid_member_complaint = | |
156 | {"invalid (minimal) member type data format at symtab pos %d.", 0, 0}; | |
157 | ||
158 | struct complaint range_type_base_complaint = | |
159 | {"base type %d of range type is not defined", 0, 0}; | |
84ffdec2 JG |
160 | |
161 | struct complaint reg_value_complaint = | |
162 | {"register number too large in symbol %s", 0, 0}; | |
1ab3bf1b JG |
163 | \f |
164 | int | |
165 | hashname (name) | |
166 | char *name; | |
167 | { | |
168 | register char *p = name; | |
169 | register int total = p[0]; | |
170 | register int c; | |
171 | ||
172 | c = p[1]; | |
173 | total += c << 2; | |
174 | if (c) | |
175 | { | |
176 | c = p[2]; | |
177 | total += c << 4; | |
178 | if (c) | |
179 | total += p[3] << 6; | |
180 | } | |
181 | ||
182 | /* Ensure result is positive. */ | |
183 | if (total < 0) total += (1000 << 6); | |
184 | return total % HASHSIZE; | |
185 | } | |
186 | ||
c0302457 JG |
187 | \f |
188 | /* Look up a dbx type-number pair. Return the address of the slot | |
189 | where the type for that number-pair is stored. | |
190 | The number-pair is in TYPENUMS. | |
191 | ||
192 | This can be used for finding the type associated with that pair | |
193 | or for associating a new type with the pair. */ | |
194 | ||
195 | struct type ** | |
196 | dbx_lookup_type (typenums) | |
197 | int typenums[2]; | |
198 | { | |
199 | register int filenum = typenums[0], index = typenums[1]; | |
a048c8f5 | 200 | unsigned old_len; |
c0302457 | 201 | |
ea1549b3 JG |
202 | if (filenum == -1) /* -1,-1 is for temporary types. */ |
203 | return 0; | |
204 | ||
c0302457 JG |
205 | if (filenum < 0 || filenum >= n_this_object_header_files) |
206 | error ("Invalid symbol data: type number (%d,%d) out of range at symtab pos %d.", | |
207 | filenum, index, symnum); | |
208 | ||
209 | if (filenum == 0) | |
210 | { | |
211 | /* Type is defined outside of header files. | |
212 | Find it in this object file's type vector. */ | |
a048c8f5 | 213 | if (index >= type_vector_length) |
c0302457 | 214 | { |
a048c8f5 JG |
215 | old_len = type_vector_length; |
216 | if (old_len == 0) { | |
217 | type_vector_length = INITIAL_TYPE_VECTOR_LENGTH; | |
218 | type_vector = (struct type **) | |
219 | malloc (type_vector_length * sizeof (struct type *)); | |
220 | } | |
221 | while (index >= type_vector_length) | |
222 | type_vector_length *= 2; | |
c0302457 | 223 | type_vector = (struct type **) |
1ab3bf1b | 224 | xrealloc ((char *) type_vector, |
c0302457 | 225 | (type_vector_length * sizeof (struct type *))); |
4ed3a9ea | 226 | memset (&type_vector[old_len], 0, |
51b57ded | 227 | (type_vector_length - old_len) * sizeof (struct type *)); |
c0302457 JG |
228 | } |
229 | return &type_vector[index]; | |
230 | } | |
231 | else | |
232 | { | |
233 | register int real_filenum = this_object_header_files[filenum]; | |
234 | register struct header_file *f; | |
235 | int f_orig_length; | |
236 | ||
237 | if (real_filenum >= n_header_files) | |
238 | abort (); | |
239 | ||
240 | f = &header_files[real_filenum]; | |
241 | ||
242 | f_orig_length = f->length; | |
243 | if (index >= f_orig_length) | |
244 | { | |
245 | while (index >= f->length) | |
246 | f->length *= 2; | |
247 | f->vector = (struct type **) | |
1ab3bf1b | 248 | xrealloc ((char *) f->vector, f->length * sizeof (struct type *)); |
4ed3a9ea | 249 | memset (&f->vector[f_orig_length], 0, |
51b57ded | 250 | (f->length - f_orig_length) * sizeof (struct type *)); |
c0302457 JG |
251 | } |
252 | return &f->vector[index]; | |
253 | } | |
254 | } | |
255 | ||
c0302457 JG |
256 | /* Make sure there is a type allocated for type numbers TYPENUMS |
257 | and return the type object. | |
258 | This can create an empty (zeroed) type object. | |
259 | TYPENUMS may be (-1, -1) to return a new type object that is not | |
260 | put into the type vector, and so may not be referred to by number. */ | |
261 | ||
2b5a8d9c | 262 | struct type * |
1ab3bf1b | 263 | dbx_alloc_type (typenums, objfile) |
c0302457 | 264 | int typenums[2]; |
1ab3bf1b | 265 | struct objfile *objfile; |
c0302457 JG |
266 | { |
267 | register struct type **type_addr; | |
c0302457 | 268 | |
ea1549b3 JG |
269 | if (typenums[0] == -1) |
270 | return alloc_type (objfile); | |
271 | ||
272 | type_addr = dbx_lookup_type (typenums); | |
c0302457 JG |
273 | |
274 | /* If we are referring to a type not known at all yet, | |
275 | allocate an empty type for it. | |
276 | We will fill it in later if we find out how. */ | |
ea1549b3 JG |
277 | if (*type_addr == 0) |
278 | *type_addr = alloc_type (objfile); | |
279 | ||
280 | return *type_addr; | |
c0302457 JG |
281 | } |
282 | \f | |
283 | /* maintain the lists of symbols and blocks */ | |
284 | ||
285 | /* Add a symbol to one of the lists of symbols. */ | |
286 | void | |
287 | add_symbol_to_list (symbol, listhead) | |
288 | struct symbol *symbol; | |
289 | struct pending **listhead; | |
290 | { | |
291 | /* We keep PENDINGSIZE symbols in each link of the list. | |
292 | If we don't have a link with room in it, add a new link. */ | |
293 | if (*listhead == 0 || (*listhead)->nsyms == PENDINGSIZE) | |
294 | { | |
295 | register struct pending *link; | |
296 | if (free_pendings) | |
297 | { | |
298 | link = free_pendings; | |
299 | free_pendings = link->next; | |
300 | } | |
301 | else | |
302 | link = (struct pending *) xmalloc (sizeof (struct pending)); | |
303 | ||
304 | link->next = *listhead; | |
305 | *listhead = link; | |
306 | link->nsyms = 0; | |
307 | } | |
308 | ||
309 | (*listhead)->symbol[(*listhead)->nsyms++] = symbol; | |
310 | } | |
311 | ||
a048c8f5 JG |
312 | /* Find a symbol on a pending list. */ |
313 | struct symbol * | |
314 | find_symbol_in_list (list, name, length) | |
315 | struct pending *list; | |
316 | char *name; | |
317 | int length; | |
318 | { | |
319 | int j; | |
320 | ||
321 | while (list) { | |
322 | for (j = list->nsyms; --j >= 0; ) { | |
323 | char *pp = SYMBOL_NAME (list->symbol[j]); | |
324 | if (*pp == *name && strncmp (pp, name, length) == 0 && pp[length] == '\0') | |
325 | return list->symbol[j]; | |
326 | } | |
327 | list = list->next; | |
328 | } | |
329 | return NULL; | |
330 | } | |
331 | ||
c0302457 JG |
332 | /* At end of reading syms, or in case of quit, |
333 | really free as many `struct pending's as we can easily find. */ | |
334 | ||
335 | /* ARGSUSED */ | |
336 | void | |
337 | really_free_pendings (foo) | |
338 | int foo; | |
339 | { | |
340 | struct pending *next, *next1; | |
341 | #if 0 | |
342 | struct pending_block *bnext, *bnext1; | |
343 | #endif | |
344 | ||
345 | for (next = free_pendings; next; next = next1) | |
346 | { | |
347 | next1 = next->next; | |
84ffdec2 | 348 | free ((PTR)next); |
c0302457 JG |
349 | } |
350 | free_pendings = 0; | |
351 | ||
352 | #if 0 /* Now we make the links in the symbol_obstack, so don't free them. */ | |
353 | for (bnext = pending_blocks; bnext; bnext = bnext1) | |
354 | { | |
355 | bnext1 = bnext->next; | |
84ffdec2 | 356 | free ((PTR)bnext); |
c0302457 JG |
357 | } |
358 | #endif | |
359 | pending_blocks = 0; | |
360 | ||
361 | for (next = file_symbols; next; next = next1) | |
362 | { | |
363 | next1 = next->next; | |
84ffdec2 | 364 | free ((PTR)next); |
c0302457 JG |
365 | } |
366 | file_symbols = 0; | |
367 | ||
368 | for (next = global_symbols; next; next = next1) | |
369 | { | |
370 | next1 = next->next; | |
84ffdec2 | 371 | free ((PTR)next); |
c0302457 JG |
372 | } |
373 | global_symbols = 0; | |
374 | } | |
375 | ||
376 | /* Take one of the lists of symbols and make a block from it. | |
377 | Keep the order the symbols have in the list (reversed from the input file). | |
378 | Put the block on the list of pending blocks. */ | |
379 | ||
380 | void | |
1ab3bf1b | 381 | finish_block (symbol, listhead, old_blocks, start, end, objfile) |
c0302457 JG |
382 | struct symbol *symbol; |
383 | struct pending **listhead; | |
384 | struct pending_block *old_blocks; | |
385 | CORE_ADDR start, end; | |
1ab3bf1b | 386 | struct objfile *objfile; |
c0302457 JG |
387 | { |
388 | register struct pending *next, *next1; | |
389 | register struct block *block; | |
390 | register struct pending_block *pblock; | |
391 | struct pending_block *opblock; | |
392 | register int i; | |
393 | ||
394 | /* Count the length of the list of symbols. */ | |
395 | ||
a048c8f5 JG |
396 | for (next = *listhead, i = 0; |
397 | next; | |
398 | i += next->nsyms, next = next->next) | |
c0302457 JG |
399 | /*EMPTY*/; |
400 | ||
1ab3bf1b | 401 | block = (struct block *) obstack_alloc (&objfile -> symbol_obstack, |
a048c8f5 | 402 | (sizeof (struct block) + ((i - 1) * sizeof (struct symbol *)))); |
c0302457 JG |
403 | |
404 | /* Copy the symbols into the block. */ | |
405 | ||
406 | BLOCK_NSYMS (block) = i; | |
407 | for (next = *listhead; next; next = next->next) | |
408 | { | |
409 | register int j; | |
410 | for (j = next->nsyms - 1; j >= 0; j--) | |
411 | BLOCK_SYM (block, --i) = next->symbol[j]; | |
412 | } | |
413 | ||
414 | BLOCK_START (block) = start; | |
415 | BLOCK_END (block) = end; | |
416 | BLOCK_SUPERBLOCK (block) = 0; /* Filled in when containing block is made */ | |
417 | BLOCK_GCC_COMPILED (block) = processing_gcc_compilation; | |
418 | ||
419 | /* Put the block in as the value of the symbol that names it. */ | |
420 | ||
421 | if (symbol) | |
422 | { | |
423 | SYMBOL_BLOCK_VALUE (symbol) = block; | |
424 | BLOCK_FUNCTION (block) = symbol; | |
425 | } | |
426 | else | |
427 | BLOCK_FUNCTION (block) = 0; | |
428 | ||
429 | /* Now "free" the links of the list, and empty the list. */ | |
430 | ||
431 | for (next = *listhead; next; next = next1) | |
432 | { | |
433 | next1 = next->next; | |
434 | next->next = free_pendings; | |
435 | free_pendings = next; | |
436 | } | |
437 | *listhead = 0; | |
438 | ||
439 | /* Install this block as the superblock | |
440 | of all blocks made since the start of this scope | |
441 | that don't have superblocks yet. */ | |
442 | ||
443 | opblock = 0; | |
444 | for (pblock = pending_blocks; pblock != old_blocks; pblock = pblock->next) | |
445 | { | |
446 | if (BLOCK_SUPERBLOCK (pblock->block) == 0) { | |
447 | #if 1 | |
448 | /* Check to be sure the blocks are nested as we receive them. | |
449 | If the compiler/assembler/linker work, this just burns a small | |
450 | amount of time. */ | |
451 | if (BLOCK_START (pblock->block) < BLOCK_START (block) | |
452 | || BLOCK_END (pblock->block) > BLOCK_END (block)) { | |
ec8ceca3 JG |
453 | if (symbol) |
454 | complain(&innerblock_complaint, SYMBOL_NAME (symbol)); | |
455 | else | |
456 | complain(&innerblock_anon_complaint, 0); | |
c0302457 JG |
457 | BLOCK_START (pblock->block) = BLOCK_START (block); |
458 | BLOCK_END (pblock->block) = BLOCK_END (block); | |
459 | } | |
460 | #endif | |
461 | BLOCK_SUPERBLOCK (pblock->block) = block; | |
462 | } | |
463 | opblock = pblock; | |
464 | } | |
465 | ||
466 | /* Record this block on the list of all blocks in the file. | |
467 | Put it after opblock, or at the beginning if opblock is 0. | |
468 | This puts the block in the list after all its subblocks. */ | |
469 | ||
470 | /* Allocate in the symbol_obstack to save time. | |
471 | It wastes a little space. */ | |
472 | pblock = (struct pending_block *) | |
1ab3bf1b | 473 | obstack_alloc (&objfile -> symbol_obstack, |
c0302457 JG |
474 | sizeof (struct pending_block)); |
475 | pblock->block = block; | |
476 | if (opblock) | |
477 | { | |
478 | pblock->next = opblock->next; | |
479 | opblock->next = pblock; | |
480 | } | |
481 | else | |
482 | { | |
483 | pblock->next = pending_blocks; | |
484 | pending_blocks = pblock; | |
485 | } | |
486 | } | |
487 | ||
1ab3bf1b JG |
488 | static struct blockvector * |
489 | make_blockvector (objfile) | |
490 | struct objfile *objfile; | |
c0302457 JG |
491 | { |
492 | register struct pending_block *next; | |
493 | register struct blockvector *blockvector; | |
494 | register int i; | |
495 | ||
496 | /* Count the length of the list of blocks. */ | |
497 | ||
498 | for (next = pending_blocks, i = 0; next; next = next->next, i++); | |
499 | ||
500 | blockvector = (struct blockvector *) | |
1ab3bf1b | 501 | obstack_alloc (&objfile -> symbol_obstack, |
c0302457 JG |
502 | (sizeof (struct blockvector) |
503 | + (i - 1) * sizeof (struct block *))); | |
504 | ||
505 | /* Copy the blocks into the blockvector. | |
506 | This is done in reverse order, which happens to put | |
507 | the blocks into the proper order (ascending starting address). | |
508 | finish_block has hair to insert each block into the list | |
509 | after its subblocks in order to make sure this is true. */ | |
510 | ||
511 | BLOCKVECTOR_NBLOCKS (blockvector) = i; | |
512 | for (next = pending_blocks; next; next = next->next) { | |
513 | BLOCKVECTOR_BLOCK (blockvector, --i) = next->block; | |
514 | } | |
515 | ||
516 | #if 0 /* Now we make the links in the obstack, so don't free them. */ | |
517 | /* Now free the links of the list, and empty the list. */ | |
518 | ||
519 | for (next = pending_blocks; next; next = next1) | |
520 | { | |
521 | next1 = next->next; | |
522 | free (next); | |
523 | } | |
524 | #endif | |
525 | pending_blocks = 0; | |
526 | ||
527 | #if 1 /* FIXME, shut this off after a while to speed up symbol reading. */ | |
528 | /* Some compilers output blocks in the wrong order, but we depend | |
529 | on their being in the right order so we can binary search. | |
530 | Check the order and moan about it. FIXME. */ | |
531 | if (BLOCKVECTOR_NBLOCKS (blockvector) > 1) | |
532 | for (i = 1; i < BLOCKVECTOR_NBLOCKS (blockvector); i++) { | |
533 | if (BLOCK_START(BLOCKVECTOR_BLOCK (blockvector, i-1)) | |
534 | > BLOCK_START(BLOCKVECTOR_BLOCK (blockvector, i))) { | |
535 | complain (&blockvector_complaint, | |
1ab3bf1b | 536 | (char *) BLOCK_START(BLOCKVECTOR_BLOCK (blockvector, i))); |
c0302457 JG |
537 | } |
538 | } | |
539 | #endif | |
540 | ||
541 | return blockvector; | |
542 | } | |
543 | \f | |
4137c5fc JG |
544 | /* Start recording information about source code that came from an included |
545 | (or otherwise merged-in) source file with a different name. */ | |
c0302457 JG |
546 | |
547 | void | |
4137c5fc JG |
548 | start_subfile (name, dirname) |
549 | char *name; | |
550 | char *dirname; | |
551 | { | |
552 | register struct subfile *subfile; | |
553 | ||
554 | /* See if this subfile is already known as a subfile of the | |
555 | current main source file. */ | |
556 | ||
557 | for (subfile = subfiles; subfile; subfile = subfile->next) | |
558 | { | |
559 | if (!strcmp (subfile->name, name)) | |
560 | { | |
561 | current_subfile = subfile; | |
562 | return; | |
563 | } | |
564 | } | |
565 | ||
566 | /* This subfile is not known. Add an entry for it. | |
567 | Make an entry for this subfile in the list of all subfiles | |
568 | of the current main source file. */ | |
569 | ||
570 | subfile = (struct subfile *) xmalloc (sizeof (struct subfile)); | |
571 | subfile->next = subfiles; | |
572 | subfiles = subfile; | |
573 | current_subfile = subfile; | |
574 | ||
575 | /* Save its name and compilation directory name */ | |
1ab3bf1b | 576 | subfile->name = strdup (name); |
4137c5fc JG |
577 | if (dirname == NULL) |
578 | subfile->dirname = NULL; | |
579 | else | |
1ab3bf1b | 580 | subfile->dirname = strdup (dirname); |
4137c5fc JG |
581 | |
582 | /* Initialize line-number recording for this subfile. */ | |
583 | subfile->line_vector = 0; | |
584 | } | |
585 | \f | |
a048c8f5 JG |
586 | /* Handle the N_BINCL and N_EINCL symbol types |
587 | that act like N_SOL for switching source files | |
588 | (different subfiles, as we call them) within one object file, | |
589 | but using a stack rather than in an arbitrary order. */ | |
590 | ||
591 | void | |
592 | push_subfile () | |
593 | { | |
594 | register struct subfile_stack *tem | |
595 | = (struct subfile_stack *) xmalloc (sizeof (struct subfile_stack)); | |
596 | ||
597 | tem->next = subfile_stack; | |
598 | subfile_stack = tem; | |
599 | if (current_subfile == 0 || current_subfile->name == 0) | |
600 | abort (); | |
601 | tem->name = current_subfile->name; | |
a048c8f5 JG |
602 | } |
603 | ||
604 | char * | |
605 | pop_subfile () | |
606 | { | |
607 | register char *name; | |
608 | register struct subfile_stack *link = subfile_stack; | |
609 | ||
610 | if (link == 0) | |
611 | abort (); | |
612 | ||
613 | name = link->name; | |
614 | subfile_stack = link->next; | |
84ffdec2 | 615 | free ((PTR)link); |
a048c8f5 JG |
616 | |
617 | return name; | |
618 | } | |
619 | \f | |
4137c5fc JG |
620 | /* Manage the vector of line numbers for each subfile. */ |
621 | ||
622 | void | |
623 | record_line (subfile, line, pc) | |
624 | register struct subfile *subfile; | |
c0302457 JG |
625 | int line; |
626 | CORE_ADDR pc; | |
627 | { | |
628 | struct linetable_entry *e; | |
629 | /* Ignore the dummy line number in libg.o */ | |
630 | ||
631 | if (line == 0xffff) | |
632 | return; | |
633 | ||
4137c5fc JG |
634 | /* Make sure line vector exists and is big enough. */ |
635 | if (!subfile->line_vector) { | |
636 | subfile->line_vector_length = INITIAL_LINE_VECTOR_LENGTH; | |
637 | subfile->line_vector = (struct linetable *) | |
638 | xmalloc (sizeof (struct linetable) | |
639 | + subfile->line_vector_length * sizeof (struct linetable_entry)); | |
640 | subfile->line_vector->nitems = 0; | |
641 | } | |
c0302457 | 642 | |
4137c5fc | 643 | if (subfile->line_vector->nitems + 1 >= subfile->line_vector_length) |
c0302457 | 644 | { |
4137c5fc JG |
645 | subfile->line_vector_length *= 2; |
646 | subfile->line_vector = (struct linetable *) | |
1ab3bf1b | 647 | xrealloc ((char *) subfile->line_vector, (sizeof (struct linetable) |
4137c5fc | 648 | + subfile->line_vector_length * sizeof (struct linetable_entry))); |
c0302457 JG |
649 | } |
650 | ||
4137c5fc | 651 | e = subfile->line_vector->item + subfile->line_vector->nitems++; |
c0302457 JG |
652 | e->line = line; e->pc = pc; |
653 | } | |
4137c5fc JG |
654 | |
655 | ||
656 | /* Needed in order to sort line tables from IBM xcoff files. Sigh! */ | |
657 | ||
1ab3bf1b JG |
658 | static int |
659 | compare_line_numbers (ln1p, ln2p) | |
660 | const PTR ln1p; | |
661 | const PTR ln2p; | |
4137c5fc | 662 | { |
1ab3bf1b JG |
663 | return (((struct linetable_entry *) ln1p) -> line - |
664 | ((struct linetable_entry *) ln2p) -> line); | |
4137c5fc | 665 | } |
1ab3bf1b | 666 | |
c0302457 JG |
667 | \f |
668 | /* Start a new symtab for a new source file. | |
669 | This is called when a dbx symbol of type N_SO is seen; | |
670 | it indicates the start of data for one original source file. */ | |
671 | ||
672 | void | |
673 | start_symtab (name, dirname, start_addr) | |
674 | char *name; | |
675 | char *dirname; | |
676 | CORE_ADDR start_addr; | |
677 | { | |
678 | ||
679 | last_source_file = name; | |
680 | last_source_start_addr = start_addr; | |
681 | file_symbols = 0; | |
682 | global_symbols = 0; | |
4137c5fc | 683 | global_stabs = 0; /* AIX COFF */ |
c0302457 JG |
684 | within_function = 0; |
685 | ||
a048c8f5 JG |
686 | /* Context stack is initially empty. Allocate first one with room for |
687 | 10 levels; reuse it forever afterward. */ | |
688 | if (context_stack == 0) { | |
689 | context_stack_size = INITIAL_CONTEXT_STACK_SIZE; | |
690 | context_stack = (struct context_stack *) | |
691 | xmalloc (context_stack_size * sizeof (struct context_stack)); | |
692 | } | |
c0302457 JG |
693 | context_stack_depth = 0; |
694 | ||
1ab3bf1b JG |
695 | /* Leave FILENUM of 0 free for builtin types and this file's types. */ |
696 | n_this_object_header_files = 1; | |
c0302457 | 697 | |
a048c8f5 JG |
698 | type_vector_length = 0; |
699 | type_vector = (struct type **) 0; | |
c0302457 JG |
700 | |
701 | /* Initialize the list of sub source files with one entry | |
702 | for this file (the top-level source file). */ | |
703 | ||
704 | subfiles = 0; | |
705 | current_subfile = 0; | |
706 | start_subfile (name, dirname); | |
707 | } | |
708 | ||
1ab3bf1b JG |
709 | /* for all the stabs in a given stab vector, build appropriate types |
710 | and fix their symbols in given symbol vector. */ | |
711 | ||
712 | static void | |
713 | patch_block_stabs (symbols, stabs, objfile) | |
714 | struct pending *symbols; | |
715 | struct pending_stabs *stabs; | |
716 | struct objfile *objfile; | |
717 | { | |
718 | int ii; | |
719 | ||
720 | if (stabs) | |
721 | { | |
722 | ||
723 | /* for all the stab entries, find their corresponding symbols and | |
724 | patch their types! */ | |
725 | ||
726 | for (ii = 0; ii < stabs->count; ++ii) | |
727 | { | |
728 | char *name = stabs->stab[ii]; | |
729 | char *pp = (char*) strchr (name, ':'); | |
730 | struct symbol *sym = find_symbol_in_list (symbols, name, pp-name); | |
731 | if (!sym) | |
732 | { | |
1eeba686 | 733 | #ifndef IBM6000_TARGET |
1ab3bf1b | 734 | printf ("ERROR! stab symbol not found!\n"); /* FIXME */ |
6c6afbb9 | 735 | #endif |
1ab3bf1b JG |
736 | } |
737 | else | |
738 | { | |
739 | pp += 2; | |
740 | if (*(pp-1) == 'F' || *(pp-1) == 'f') | |
741 | { | |
742 | SYMBOL_TYPE (sym) = | |
743 | lookup_function_type (read_type (&pp, objfile)); | |
744 | } | |
745 | else | |
746 | { | |
747 | SYMBOL_TYPE (sym) = read_type (&pp, objfile); | |
748 | } | |
749 | } | |
750 | } | |
751 | } | |
752 | } | |
753 | ||
c0302457 JG |
754 | /* Finish the symbol definitions for one main source file, |
755 | close off all the lexical contexts for that file | |
756 | (creating struct block's for them), then make the struct symtab | |
757 | for that file and put it in the list of all such. | |
758 | ||
759 | END_ADDR is the address of the end of the file's text. */ | |
760 | ||
761 | struct symtab * | |
a048c8f5 | 762 | end_symtab (end_addr, sort_pending, sort_linevec, objfile) |
c0302457 | 763 | CORE_ADDR end_addr; |
4137c5fc JG |
764 | int sort_pending; |
765 | int sort_linevec; | |
a048c8f5 | 766 | struct objfile *objfile; |
c0302457 JG |
767 | { |
768 | register struct symtab *symtab; | |
769 | register struct blockvector *blockvector; | |
770 | register struct subfile *subfile; | |
c0302457 JG |
771 | struct subfile *nextsub; |
772 | ||
773 | /* Finish the lexical context of the last function in the file; | |
774 | pop the context stack. */ | |
775 | ||
776 | if (context_stack_depth > 0) | |
777 | { | |
778 | register struct context_stack *cstk; | |
779 | context_stack_depth--; | |
780 | cstk = &context_stack[context_stack_depth]; | |
781 | /* Make a block for the local symbols within. */ | |
782 | finish_block (cstk->name, &local_symbols, cstk->old_blocks, | |
1ab3bf1b | 783 | cstk->start_addr, end_addr, objfile); |
a048c8f5 JG |
784 | |
785 | /* Debug: if context stack still has something in it, we are in | |
786 | trouble. */ | |
787 | if (context_stack_depth > 0) | |
788 | abort (); | |
c0302457 JG |
789 | } |
790 | ||
4137c5fc JG |
791 | /* It is unfortunate that in aixcoff, pending blocks might not be ordered |
792 | in this stage. Especially, blocks for static functions will show up at | |
793 | the end. We need to sort them, so tools like `find_pc_function' and | |
794 | `find_pc_block' can work reliably. */ | |
a048c8f5 | 795 | if (sort_pending && pending_blocks) { |
4137c5fc JG |
796 | /* FIXME! Remove this horrid bubble sort and use qsort!!! */ |
797 | int swapped; | |
798 | do { | |
799 | struct pending_block *pb, *pbnext; | |
800 | ||
801 | pb = pending_blocks, pbnext = pb->next; | |
802 | swapped = 0; | |
803 | ||
804 | while ( pbnext ) { | |
805 | ||
806 | /* swap blocks if unordered! */ | |
807 | ||
808 | if (BLOCK_START(pb->block) < BLOCK_START(pbnext->block)) { | |
809 | struct block *tmp = pb->block; | |
810 | pb->block = pbnext->block; | |
811 | pbnext->block = tmp; | |
812 | swapped = 1; | |
813 | } | |
814 | pb = pbnext; | |
815 | pbnext = pbnext->next; | |
816 | } | |
817 | } while (swapped); | |
818 | } | |
819 | ||
c0302457 JG |
820 | /* Cleanup any undefined types that have been left hanging around |
821 | (this needs to be done before the finish_blocks so that | |
822 | file_symbols is still good). */ | |
823 | cleanup_undefined_types (); | |
824 | ||
74f6fb08 | 825 | if (global_stabs) { |
1ab3bf1b | 826 | patch_block_stabs (global_symbols, global_stabs, objfile); |
84ffdec2 | 827 | free ((PTR)global_stabs); |
74f6fb08 JG |
828 | global_stabs = 0; |
829 | } | |
830 | ||
a048c8f5 JG |
831 | if (pending_blocks == 0 |
832 | && file_symbols == 0 | |
833 | && global_symbols == 0) { | |
834 | /* Ignore symtabs that have no functions with real debugging info */ | |
835 | blockvector = NULL; | |
836 | } else { | |
837 | /* Define the STATIC_BLOCK and GLOBAL_BLOCK, and build the blockvector. */ | |
1ab3bf1b JG |
838 | finish_block (0, &file_symbols, 0, last_source_start_addr, end_addr, objfile); |
839 | finish_block (0, &global_symbols, 0, last_source_start_addr, end_addr, objfile); | |
840 | blockvector = make_blockvector (objfile); | |
a048c8f5 | 841 | } |
c0302457 | 842 | |
818de002 PB |
843 | #ifdef PROCESS_LINENUMBER_HOOK |
844 | PROCESS_LINENUMBER_HOOK (); /* Needed for aixcoff. */ | |
845 | #endif | |
846 | ||
c0302457 JG |
847 | /* Now create the symtab objects proper, one for each subfile. */ |
848 | /* (The main file is the last one on the chain.) */ | |
849 | ||
850 | for (subfile = subfiles; subfile; subfile = nextsub) | |
851 | { | |
1ab3bf1b | 852 | int linetablesize; |
a048c8f5 JG |
853 | /* If we have blocks of symbols, make a symtab. |
854 | Otherwise, just ignore this file and any line number info in it. */ | |
855 | symtab = 0; | |
856 | if (blockvector) { | |
857 | if (subfile->line_vector) { | |
858 | /* First, shrink the linetable to make more memory. */ | |
1ab3bf1b JG |
859 | linetablesize = sizeof (struct linetable) + |
860 | subfile->line_vector->nitems * sizeof (struct linetable_entry); | |
a048c8f5 | 861 | subfile->line_vector = (struct linetable *) |
1ab3bf1b | 862 | xrealloc ((char *) subfile->line_vector, linetablesize); |
a048c8f5 JG |
863 | |
864 | if (sort_linevec) | |
865 | qsort (subfile->line_vector->item, subfile->line_vector->nitems, | |
866 | sizeof (struct linetable_entry), compare_line_numbers); | |
867 | } | |
4137c5fc | 868 | |
a048c8f5 JG |
869 | /* Now, allocate a symbol table. */ |
870 | symtab = allocate_symtab (subfile->name, objfile); | |
871 | ||
872 | /* Fill in its components. */ | |
873 | symtab->blockvector = blockvector; | |
1ab3bf1b JG |
874 | if (subfile->line_vector) |
875 | { | |
876 | /* Reallocate the line table on the symbol obstack */ | |
877 | symtab->linetable = (struct linetable *) | |
878 | obstack_alloc (&objfile -> symbol_obstack, linetablesize); | |
879 | memcpy (symtab->linetable, subfile->line_vector, linetablesize); | |
880 | } | |
881 | else | |
882 | { | |
883 | symtab->linetable = NULL; | |
884 | } | |
a048c8f5 JG |
885 | symtab->dirname = subfile->dirname; |
886 | symtab->free_code = free_linetable; | |
887 | symtab->free_ptr = 0; | |
2b5a8d9c | 888 | |
1eeba686 | 889 | #ifdef IBM6000_TARGET |
2b5a8d9c PB |
890 | /* In case we need to duplicate symbol tables (to represent include |
891 | files), and in case our system needs relocation, we want to | |
892 | relocate the main symbol table node only (for the main file, | |
893 | not for the include files). */ | |
894 | ||
895 | symtab->nonreloc = TRUE; | |
896 | #endif | |
4137c5fc | 897 | } |
1ab3bf1b | 898 | if (subfile->line_vector) |
84ffdec2 | 899 | free ((PTR)subfile->line_vector); |
4137c5fc | 900 | |
c0302457 | 901 | nextsub = subfile->next; |
84ffdec2 | 902 | free ((PTR)subfile); |
c0302457 JG |
903 | } |
904 | ||
1eeba686 | 905 | #ifdef IBM6000_TARGET |
2b5a8d9c PB |
906 | /* all include symbol tables are non-relocatable, except the main source |
907 | file's. */ | |
1eeba686 PB |
908 | if (symtab) |
909 | symtab->nonreloc = FALSE; | |
2b5a8d9c PB |
910 | #endif |
911 | ||
a048c8f5 JG |
912 | if (type_vector) |
913 | free ((char *) type_vector); | |
c0302457 | 914 | type_vector = 0; |
a048c8f5 | 915 | type_vector_length = 0; |
4137c5fc | 916 | |
c0302457 | 917 | last_source_file = 0; |
4137c5fc | 918 | current_subfile = 0; |
7e258d18 | 919 | previous_stab_code = 0; |
c0302457 JG |
920 | |
921 | return symtab; | |
922 | } | |
a048c8f5 JG |
923 | |
924 | ||
925 | /* Push a context block. Args are an identifying nesting level (checkable | |
926 | when you pop it), and the starting PC address of this context. */ | |
927 | ||
928 | struct context_stack * | |
929 | push_context (desc, valu) | |
930 | int desc; | |
931 | CORE_ADDR valu; | |
932 | { | |
933 | register struct context_stack *new; | |
934 | ||
935 | if (context_stack_depth == context_stack_size) | |
936 | { | |
937 | context_stack_size *= 2; | |
938 | context_stack = (struct context_stack *) | |
1ab3bf1b JG |
939 | xrealloc ((char *) context_stack, |
940 | (context_stack_size * sizeof (struct context_stack))); | |
a048c8f5 JG |
941 | } |
942 | ||
943 | new = &context_stack[context_stack_depth++]; | |
944 | new->depth = desc; | |
945 | new->locals = local_symbols; | |
946 | new->old_blocks = pending_blocks; | |
947 | new->start_addr = valu; | |
948 | new->name = 0; | |
949 | ||
950 | local_symbols = 0; | |
951 | ||
952 | return new; | |
953 | } | |
c0302457 JG |
954 | \f |
955 | /* Initialize anything that needs initializing when starting to read | |
956 | a fresh piece of a symbol file, e.g. reading in the stuff corresponding | |
957 | to a psymtab. */ | |
958 | ||
959 | void | |
960 | buildsym_init () | |
961 | { | |
962 | free_pendings = 0; | |
963 | file_symbols = 0; | |
964 | global_symbols = 0; | |
965 | pending_blocks = 0; | |
966 | } | |
967 | ||
968 | /* Initialize anything that needs initializing when a completely new | |
969 | symbol file is specified (not just adding some symbols from another | |
970 | file, e.g. a shared library). */ | |
971 | ||
972 | void | |
973 | buildsym_new_init () | |
974 | { | |
975 | /* Empty the hash table of global syms looking for values. */ | |
4ed3a9ea | 976 | memset (global_sym_chain, 0, sizeof global_sym_chain); |
c0302457 JG |
977 | |
978 | buildsym_init (); | |
979 | } | |
980 | ||
981 | /* Scan through all of the global symbols defined in the object file, | |
982 | assigning values to the debugging symbols that need to be assigned | |
1ab3bf1b | 983 | to. Get these symbols from the minimal symbol table. */ |
c0302457 JG |
984 | |
985 | void | |
1ab3bf1b JG |
986 | scan_file_globals (objfile) |
987 | struct objfile *objfile; | |
c0302457 JG |
988 | { |
989 | int hash; | |
1ab3bf1b JG |
990 | struct minimal_symbol *msymbol; |
991 | struct symbol *sym, *prev; | |
c0302457 | 992 | |
0f552c5f JG |
993 | if (objfile->msymbols == 0) /* Beware the null file. */ |
994 | return; | |
995 | ||
1ab3bf1b | 996 | for (msymbol = objfile -> msymbols; msymbol -> name != NULL; msymbol++) |
c0302457 | 997 | { |
c0302457 JG |
998 | QUIT; |
999 | ||
1000 | prev = (struct symbol *) 0; | |
1001 | ||
1002 | /* Get the hash index and check all the symbols | |
1003 | under that hash index. */ | |
1004 | ||
1ab3bf1b | 1005 | hash = hashname (msymbol -> name); |
c0302457 JG |
1006 | |
1007 | for (sym = global_sym_chain[hash]; sym;) | |
1008 | { | |
1ab3bf1b JG |
1009 | if (*(msymbol -> name) == SYMBOL_NAME (sym)[0] |
1010 | && !strcmp(msymbol -> name + 1, SYMBOL_NAME (sym) + 1)) | |
c0302457 JG |
1011 | { |
1012 | /* Splice this symbol out of the hash chain and | |
1013 | assign the value we have to it. */ | |
1014 | if (prev) | |
1015 | SYMBOL_VALUE_CHAIN (prev) = SYMBOL_VALUE_CHAIN (sym); | |
1016 | else | |
1017 | global_sym_chain[hash] = SYMBOL_VALUE_CHAIN (sym); | |
1018 | ||
1019 | /* Check to see whether we need to fix up a common block. */ | |
1020 | /* Note: this code might be executed several times for | |
1021 | the same symbol if there are multiple references. */ | |
1022 | if (SYMBOL_CLASS (sym) == LOC_BLOCK) | |
1ab3bf1b | 1023 | fix_common_block (sym, msymbol -> address); |
c0302457 | 1024 | else |
1ab3bf1b | 1025 | SYMBOL_VALUE_ADDRESS (sym) = msymbol -> address; |
c0302457 JG |
1026 | |
1027 | if (prev) | |
1028 | sym = SYMBOL_VALUE_CHAIN (prev); | |
1029 | else | |
1030 | sym = global_sym_chain[hash]; | |
1031 | } | |
1032 | else | |
1033 | { | |
1034 | prev = sym; | |
1035 | sym = SYMBOL_VALUE_CHAIN (sym); | |
1036 | } | |
1037 | } | |
1038 | } | |
1039 | } | |
1040 | ||
1041 | \f | |
1042 | /* Read a number by which a type is referred to in dbx data, | |
1043 | or perhaps read a pair (FILENUM, TYPENUM) in parentheses. | |
1044 | Just a single number N is equivalent to (0,N). | |
1045 | Return the two numbers by storing them in the vector TYPENUMS. | |
1046 | TYPENUMS will then be used as an argument to dbx_lookup_type. */ | |
1047 | ||
1048 | void | |
1049 | read_type_number (pp, typenums) | |
1050 | register char **pp; | |
1051 | register int *typenums; | |
1052 | { | |
1053 | if (**pp == '(') | |
1054 | { | |
1055 | (*pp)++; | |
1056 | typenums[0] = read_number (pp, ','); | |
1057 | typenums[1] = read_number (pp, ')'); | |
1058 | } | |
1059 | else | |
1060 | { | |
1061 | typenums[0] = 0; | |
1062 | typenums[1] = read_number (pp, 0); | |
1063 | } | |
1064 | } | |
1065 | \f | |
1066 | /* To handle GNU C++ typename abbreviation, we need to be able to | |
1067 | fill in a type's name as soon as space for that type is allocated. | |
1068 | `type_synonym_name' is the name of the type being allocated. | |
1069 | It is cleared as soon as it is used (lest all allocated types | |
1070 | get this name). */ | |
1071 | static char *type_synonym_name; | |
1072 | ||
1073 | /* ARGSUSED */ | |
abefb1f1 | 1074 | struct symbol * |
1ab3bf1b | 1075 | define_symbol (valu, string, desc, type, objfile) |
c0302457 JG |
1076 | unsigned int valu; |
1077 | char *string; | |
1078 | int desc; | |
1079 | int type; | |
1ab3bf1b | 1080 | struct objfile *objfile; |
c0302457 JG |
1081 | { |
1082 | register struct symbol *sym; | |
1083 | char *p = (char *) strchr (string, ':'); | |
1084 | int deftype; | |
1085 | int synonym = 0; | |
1086 | register int i; | |
1ab3bf1b | 1087 | struct type *temptype; |
c0302457 | 1088 | |
095db7ce PB |
1089 | /* We would like to eliminate nameless symbols, but keep their types. |
1090 | E.g. stab entry ":t10=*2" should produce a type 10, which is a pointer | |
1091 | to type 2, but, should not creat a symbol to address that type. Since | |
1092 | the symbol will be nameless, there is no way any user can refer to it. */ | |
1093 | ||
1094 | int nameless; | |
095db7ce | 1095 | |
c0302457 JG |
1096 | /* Ignore syms with empty names. */ |
1097 | if (string[0] == 0) | |
1098 | return 0; | |
1099 | ||
1100 | /* Ignore old-style symbols from cc -go */ | |
1101 | if (p == 0) | |
1102 | return 0; | |
1103 | ||
095db7ce PB |
1104 | /* If a nameless stab entry, all we need is the type, not the symbol. |
1105 | e.g. ":t10=*2" */ | |
1106 | nameless = (p == string); | |
095db7ce | 1107 | |
1ab3bf1b | 1108 | sym = (struct symbol *)obstack_alloc (&objfile -> symbol_obstack, sizeof (struct symbol)); |
c0302457 JG |
1109 | |
1110 | if (processing_gcc_compilation) { | |
1111 | /* GCC 2.x puts the line number in desc. SunOS apparently puts in the | |
1112 | number of bytes occupied by a type or object, which we ignore. */ | |
1113 | SYMBOL_LINE(sym) = desc; | |
1114 | } else { | |
1115 | SYMBOL_LINE(sym) = 0; /* unknown */ | |
1116 | } | |
1117 | ||
1118 | if (string[0] == CPLUS_MARKER) | |
1119 | { | |
1120 | /* Special GNU C++ names. */ | |
1121 | switch (string[1]) | |
1122 | { | |
1123 | case 't': | |
1ab3bf1b JG |
1124 | SYMBOL_NAME (sym) = obsavestring ("this", strlen ("this"), |
1125 | &objfile -> symbol_obstack); | |
c0302457 JG |
1126 | break; |
1127 | case 'v': /* $vtbl_ptr_type */ | |
1128 | /* Was: SYMBOL_NAME (sym) = "vptr"; */ | |
1129 | goto normal; | |
1130 | case 'e': | |
1ab3bf1b JG |
1131 | SYMBOL_NAME (sym) = obsavestring ("eh_throw", strlen ("eh_throw"), |
1132 | &objfile -> symbol_obstack); | |
c0302457 JG |
1133 | break; |
1134 | ||
1135 | case '_': | |
1136 | /* This was an anonymous type that was never fixed up. */ | |
1137 | goto normal; | |
1138 | ||
1139 | default: | |
1140 | abort (); | |
1141 | } | |
1142 | } | |
1143 | else | |
1144 | { | |
1145 | normal: | |
1146 | SYMBOL_NAME (sym) | |
1ab3bf1b | 1147 | = (char *) obstack_alloc (&objfile -> symbol_obstack, ((p - string) + 1)); |
c0302457 JG |
1148 | /* Open-coded bcopy--saves function call time. */ |
1149 | { | |
1150 | register char *p1 = string; | |
1151 | register char *p2 = SYMBOL_NAME (sym); | |
1152 | while (p1 != p) | |
1153 | *p2++ = *p1++; | |
1154 | *p2++ = '\0'; | |
1155 | } | |
1156 | } | |
1157 | p++; | |
1158 | /* Determine the type of name being defined. */ | |
1159 | /* The Acorn RISC machine's compiler can put out locals that don't | |
1160 | start with "234=" or "(3,4)=", so assume anything other than the | |
1161 | deftypes we know how to handle is a local. */ | |
1162 | /* (Peter Watkins @ Computervision) | |
1163 | Handle Sun-style local fortran array types 'ar...' . | |
1164 | (gnu@cygnus.com) -- this strchr() handles them properly? | |
1165 | (tiemann@cygnus.com) -- 'C' is for catch. */ | |
095db7ce PB |
1166 | |
1167 | #ifdef IBM6000_TARGET | |
1168 | ||
1169 | /* 'R' is for register parameters. */ | |
1170 | ||
1171 | if (!strchr ("cfFGpPrStTvVXCR", *p)) | |
1172 | #else | |
1173 | ||
c0302457 | 1174 | if (!strchr ("cfFGpPrStTvVXC", *p)) |
095db7ce | 1175 | #endif |
c0302457 JG |
1176 | deftype = 'l'; |
1177 | else | |
1178 | deftype = *p++; | |
1179 | ||
1180 | /* c is a special case, not followed by a type-number. | |
1181 | SYMBOL:c=iVALUE for an integer constant symbol. | |
1182 | SYMBOL:c=rVALUE for a floating constant symbol. | |
1183 | SYMBOL:c=eTYPE,INTVALUE for an enum constant symbol. | |
1184 | e.g. "b:c=e6,0" for "const b = blob1" | |
1185 | (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */ | |
1186 | if (deftype == 'c') | |
1187 | { | |
1188 | if (*p++ != '=') | |
1189 | error ("Invalid symbol data at symtab pos %d.", symnum); | |
1190 | switch (*p++) | |
1191 | { | |
1192 | case 'r': | |
1193 | { | |
1194 | double d = atof (p); | |
1195 | char *dbl_valu; | |
1196 | ||
1ab3bf1b JG |
1197 | SYMBOL_TYPE (sym) = lookup_fundamental_type (objfile, |
1198 | FT_DBL_PREC_FLOAT); | |
1199 | dbl_valu = (char *) | |
1200 | obstack_alloc (&objfile -> type_obstack, | |
1201 | sizeof (double)); | |
7e258d18 | 1202 | memcpy (dbl_valu, &d, sizeof (double)); |
c0302457 JG |
1203 | SWAP_TARGET_AND_HOST (dbl_valu, sizeof (double)); |
1204 | SYMBOL_VALUE_BYTES (sym) = dbl_valu; | |
1205 | SYMBOL_CLASS (sym) = LOC_CONST_BYTES; | |
1206 | } | |
1207 | break; | |
1208 | case 'i': | |
1209 | { | |
1ab3bf1b JG |
1210 | SYMBOL_TYPE (sym) = lookup_fundamental_type (objfile, |
1211 | FT_INTEGER); | |
c0302457 JG |
1212 | SYMBOL_VALUE (sym) = atoi (p); |
1213 | SYMBOL_CLASS (sym) = LOC_CONST; | |
1214 | } | |
1215 | break; | |
1216 | case 'e': | |
1217 | /* SYMBOL:c=eTYPE,INTVALUE for an enum constant symbol. | |
1218 | e.g. "b:c=e6,0" for "const b = blob1" | |
1219 | (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */ | |
1220 | { | |
1221 | int typenums[2]; | |
1222 | ||
1223 | read_type_number (&p, typenums); | |
1224 | if (*p++ != ',') | |
1225 | error ("Invalid symbol data: no comma in enum const symbol"); | |
1226 | ||
1227 | SYMBOL_TYPE (sym) = *dbx_lookup_type (typenums); | |
1228 | SYMBOL_VALUE (sym) = atoi (p); | |
1229 | SYMBOL_CLASS (sym) = LOC_CONST; | |
1230 | } | |
1231 | break; | |
1232 | default: | |
1233 | error ("Invalid symbol data at symtab pos %d.", symnum); | |
1234 | } | |
1235 | SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; | |
1236 | add_symbol_to_list (sym, &file_symbols); | |
1237 | return sym; | |
1238 | } | |
1239 | ||
1240 | /* Now usually comes a number that says which data type, | |
1241 | and possibly more stuff to define the type | |
1242 | (all of which is handled by read_type) */ | |
1243 | ||
1244 | if (deftype == 'p' && *p == 'F') | |
1245 | /* pF is a two-letter code that means a function parameter in Fortran. | |
1246 | The type-number specifies the type of the return value. | |
1247 | Translate it into a pointer-to-function type. */ | |
1248 | { | |
1249 | p++; | |
1250 | SYMBOL_TYPE (sym) | |
1ab3bf1b | 1251 | = lookup_pointer_type (lookup_function_type (read_type (&p, objfile))); |
c0302457 | 1252 | } |
095db7ce PB |
1253 | |
1254 | #ifdef IBM6000_TARGET | |
1255 | else if (deftype == 'R') | |
9b6f92db | 1256 | SYMBOL_TYPE (sym) = read_type (&p, objfile); |
095db7ce PB |
1257 | #endif |
1258 | ||
c0302457 JG |
1259 | else |
1260 | { | |
4c7c6bab JG |
1261 | /* The symbol class letter is followed by a type (typically the |
1262 | type of the symbol, or its return-type, or etc). Read it. */ | |
1263 | ||
c0302457 JG |
1264 | synonym = *p == 't'; |
1265 | ||
1266 | if (synonym) | |
1267 | { | |
1268 | p += 1; | |
1269 | type_synonym_name = obsavestring (SYMBOL_NAME (sym), | |
1ab3bf1b JG |
1270 | strlen (SYMBOL_NAME (sym)), |
1271 | &objfile -> symbol_obstack); | |
c0302457 JG |
1272 | } |
1273 | ||
2a5ec41d JG |
1274 | /* Here we save the name of the symbol for read_range_type, which |
1275 | ends up reading in the basic types. In stabs, unfortunately there | |
1276 | is no distinction between "int" and "long" types except their | |
1277 | names. Until we work out a saner type policy (eliminating most | |
1278 | builtin types and using the names specified in the files), we | |
1279 | save away the name so that far away from here in read_range_type, | |
1280 | we can examine it to decide between "int" and "long". FIXME. */ | |
1281 | long_kludge_name = SYMBOL_NAME (sym); | |
ea1549b3 | 1282 | |
4c7c6bab | 1283 | SYMBOL_TYPE (sym) = read_type (&p, objfile); |
c0302457 JG |
1284 | } |
1285 | ||
1286 | switch (deftype) | |
1287 | { | |
1288 | case 'C': | |
1289 | /* The name of a caught exception. */ | |
1290 | SYMBOL_CLASS (sym) = LOC_LABEL; | |
1291 | SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; | |
1292 | SYMBOL_VALUE_ADDRESS (sym) = valu; | |
1293 | add_symbol_to_list (sym, &local_symbols); | |
1294 | break; | |
1295 | ||
1296 | case 'f': | |
4c7c6bab | 1297 | /* A static function definition. */ |
c0302457 JG |
1298 | SYMBOL_CLASS (sym) = LOC_BLOCK; |
1299 | SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; | |
1300 | add_symbol_to_list (sym, &file_symbols); | |
4c7c6bab JG |
1301 | /* fall into process_function_types. */ |
1302 | ||
1303 | process_function_types: | |
1304 | /* Function result types are described as the result type in stabs. | |
1305 | We need to convert this to the function-returning-type-X type | |
1306 | in GDB. E.g. "int" is converted to "function returning int". */ | |
1307 | if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_FUNC) | |
1308 | { | |
1309 | #if 0 | |
1310 | /* This code doesn't work -- it needs to realloc and can't. */ | |
1311 | /* Attempt to set up to record a function prototype... */ | |
1312 | struct type *new = (struct type *) | |
1313 | obstack_alloc (&objfile -> type_obstack, | |
1314 | sizeof (struct type)); | |
1315 | ||
1316 | /* Generate a template for the type of this function. The | |
1317 | types of the arguments will be added as we read the symbol | |
1318 | table. */ | |
1319 | *new = *lookup_function_type (SYMBOL_TYPE(sym)); | |
1320 | SYMBOL_TYPE(sym) = new; | |
1321 | TYPE_OBJFILE (new) = objfile; | |
1322 | in_function_type = new; | |
1323 | #else | |
1324 | SYMBOL_TYPE (sym) = lookup_function_type (SYMBOL_TYPE (sym)); | |
1325 | #endif | |
1326 | } | |
1327 | /* fall into process_prototype_types */ | |
1328 | ||
1329 | process_prototype_types: | |
1330 | /* Sun acc puts declared types of arguments here. We don't care | |
1331 | about their actual types (FIXME -- we should remember the whole | |
1332 | function prototype), but the list may define some new types | |
1333 | that we have to remember, so we must scan it now. */ | |
1334 | while (*p == ';') { | |
1335 | p++; | |
1336 | read_type (&p, objfile); | |
1337 | } | |
c0302457 JG |
1338 | break; |
1339 | ||
1340 | case 'F': | |
4c7c6bab | 1341 | /* A global function definition. */ |
c0302457 JG |
1342 | SYMBOL_CLASS (sym) = LOC_BLOCK; |
1343 | SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; | |
1344 | add_symbol_to_list (sym, &global_symbols); | |
4c7c6bab | 1345 | goto process_function_types; |
c0302457 JG |
1346 | |
1347 | case 'G': | |
1348 | /* For a class G (global) symbol, it appears that the | |
1349 | value is not correct. It is necessary to search for the | |
1350 | corresponding linker definition to find the value. | |
1351 | These definitions appear at the end of the namelist. */ | |
1352 | i = hashname (SYMBOL_NAME (sym)); | |
1353 | SYMBOL_VALUE_CHAIN (sym) = global_sym_chain[i]; | |
1354 | global_sym_chain[i] = sym; | |
1355 | SYMBOL_CLASS (sym) = LOC_STATIC; | |
1356 | SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; | |
1357 | add_symbol_to_list (sym, &global_symbols); | |
1358 | break; | |
1359 | ||
1360 | /* This case is faked by a conditional above, | |
1361 | when there is no code letter in the dbx data. | |
1362 | Dbx data never actually contains 'l'. */ | |
1363 | case 'l': | |
1364 | SYMBOL_CLASS (sym) = LOC_LOCAL; | |
1365 | SYMBOL_VALUE (sym) = valu; | |
1366 | SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; | |
1367 | add_symbol_to_list (sym, &local_symbols); | |
1368 | break; | |
1369 | ||
1370 | case 'p': | |
1371 | /* Normally this is a parameter, a LOC_ARG. On the i960, it | |
1372 | can also be a LOC_LOCAL_ARG depending on symbol type. */ | |
1373 | #ifndef DBX_PARM_SYMBOL_CLASS | |
1374 | #define DBX_PARM_SYMBOL_CLASS(type) LOC_ARG | |
1375 | #endif | |
1376 | SYMBOL_CLASS (sym) = DBX_PARM_SYMBOL_CLASS (type); | |
1377 | SYMBOL_VALUE (sym) = valu; | |
1378 | SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; | |
1379 | #if 0 | |
1380 | /* This doesn't work yet. */ | |
1381 | add_param_to_type (&in_function_type, sym); | |
1382 | #endif | |
1383 | add_symbol_to_list (sym, &local_symbols); | |
1384 | ||
1385 | /* If it's gcc-compiled, if it says `short', believe it. */ | |
1386 | if (processing_gcc_compilation || BELIEVE_PCC_PROMOTION) | |
1387 | break; | |
1388 | ||
1389 | #if defined(BELIEVE_PCC_PROMOTION_TYPE) | |
1390 | /* This macro is defined on machines (e.g. sparc) where | |
1391 | we should believe the type of a PCC 'short' argument, | |
1392 | but shouldn't believe the address (the address is | |
1393 | the address of the corresponding int). Note that | |
1394 | this is only different from the BELIEVE_PCC_PROMOTION | |
1395 | case on big-endian machines. | |
1396 | ||
1397 | My guess is that this correction, as opposed to changing | |
1398 | the parameter to an 'int' (as done below, for PCC | |
1399 | on most machines), is the right thing to do | |
1400 | on all machines, but I don't want to risk breaking | |
1401 | something that already works. On most PCC machines, | |
1402 | the sparc problem doesn't come up because the calling | |
1403 | function has to zero the top bytes (not knowing whether | |
1404 | the called function wants an int or a short), so there | |
1405 | is no practical difference between an int and a short | |
1406 | (except perhaps what happens when the GDB user types | |
1407 | "print short_arg = 0x10000;"). | |
1408 | ||
1409 | Hacked for SunOS 4.1 by gnu@cygnus.com. In 4.1, the compiler | |
1410 | actually produces the correct address (we don't need to fix it | |
1411 | up). I made this code adapt so that it will offset the symbol | |
1412 | if it was pointing at an int-aligned location and not | |
1413 | otherwise. This way you can use the same gdb for 4.0.x and | |
2a5ec41d JG |
1414 | 4.1 systems. |
1415 | ||
1416 | If the parameter is shorter than an int, and is integral | |
1417 | (e.g. char, short, or unsigned equivalent), and is claimed to | |
1418 | be passed on an integer boundary, don't believe it! Offset the | |
1419 | parameter's address to the tail-end of that integer. */ | |
1420 | ||
1ab3bf1b JG |
1421 | temptype = lookup_fundamental_type (objfile, FT_INTEGER); |
1422 | if (TYPE_LENGTH (SYMBOL_TYPE (sym)) < TYPE_LENGTH (temptype) | |
1423 | && TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_INT | |
1424 | && 0 == SYMBOL_VALUE (sym) % TYPE_LENGTH (temptype)) | |
1425 | { | |
1426 | SYMBOL_VALUE (sym) += TYPE_LENGTH (temptype) | |
1427 | - TYPE_LENGTH (SYMBOL_TYPE (sym)); | |
1428 | } | |
c0302457 JG |
1429 | break; |
1430 | ||
1431 | #else /* no BELIEVE_PCC_PROMOTION_TYPE. */ | |
1432 | ||
1433 | /* If PCC says a parameter is a short or a char, | |
1434 | it is really an int. */ | |
1ab3bf1b JG |
1435 | temptype = lookup_fundamental_type (objfile, FT_INTEGER); |
1436 | if (TYPE_LENGTH (SYMBOL_TYPE (sym)) < TYPE_LENGTH (temptype) | |
1437 | && TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_INT) | |
1438 | { | |
1439 | SYMBOL_TYPE (sym) = TYPE_UNSIGNED (SYMBOL_TYPE (sym)) | |
1440 | ? lookup_fundamental_type (objfile, FT_UNSIGNED_INTEGER) | |
1441 | : temptype; | |
2a5ec41d | 1442 | } |
c0302457 JG |
1443 | break; |
1444 | ||
1445 | #endif /* no BELIEVE_PCC_PROMOTION_TYPE. */ | |
1446 | ||
1447 | case 'P': | |
4c7c6bab JG |
1448 | /* acc seems to use P to delare the prototypes of functions that |
1449 | are referenced by this file. gdb is not prepared to deal | |
1450 | with this extra information. FIXME, it ought to. */ | |
1451 | if (type == N_FUN) | |
1452 | goto process_prototype_types; | |
93297ea0 | 1453 | |
4c7c6bab | 1454 | /* Parameter which is in a register. */ |
c0302457 JG |
1455 | SYMBOL_CLASS (sym) = LOC_REGPARM; |
1456 | SYMBOL_VALUE (sym) = STAB_REG_TO_REGNUM (valu); | |
84ffdec2 JG |
1457 | if (SYMBOL_VALUE (sym) >= NUM_REGS) |
1458 | { | |
1459 | complain (®_value_complaint, SYMBOL_NAME (sym)); | |
1460 | SYMBOL_VALUE (sym) = SP_REGNUM; /* Known safe, though useless */ | |
1461 | } | |
c0302457 JG |
1462 | SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; |
1463 | add_symbol_to_list (sym, &local_symbols); | |
1464 | break; | |
1465 | ||
095db7ce PB |
1466 | #ifdef IBM6000_TARGET |
1467 | case 'R': | |
1468 | #endif | |
c0302457 | 1469 | case 'r': |
84ffdec2 | 1470 | /* Register variable (either global or local). */ |
c0302457 JG |
1471 | SYMBOL_CLASS (sym) = LOC_REGISTER; |
1472 | SYMBOL_VALUE (sym) = STAB_REG_TO_REGNUM (valu); | |
84ffdec2 JG |
1473 | if (SYMBOL_VALUE (sym) >= NUM_REGS) |
1474 | { | |
1475 | complain (®_value_complaint, SYMBOL_NAME (sym)); | |
1476 | SYMBOL_VALUE (sym) = SP_REGNUM; /* Known safe, though useless */ | |
1477 | } | |
c0302457 | 1478 | SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; |
84ffdec2 JG |
1479 | if (within_function) |
1480 | add_symbol_to_list (sym, &local_symbols); | |
1481 | else | |
1482 | add_symbol_to_list (sym, &file_symbols); | |
c0302457 JG |
1483 | break; |
1484 | ||
1485 | case 'S': | |
1486 | /* Static symbol at top level of file */ | |
1487 | SYMBOL_CLASS (sym) = LOC_STATIC; | |
1488 | SYMBOL_VALUE_ADDRESS (sym) = valu; | |
1489 | SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; | |
1490 | add_symbol_to_list (sym, &file_symbols); | |
1491 | break; | |
1492 | ||
1493 | case 't': | |
095db7ce PB |
1494 | /* For a nameless type, we don't want a create a symbol, thus we |
1495 | did not use `sym'. Return without further processing. */ | |
095db7ce | 1496 | if (nameless) return NULL; |
2778e915 | 1497 | |
c0302457 JG |
1498 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; |
1499 | SYMBOL_VALUE (sym) = valu; | |
1500 | SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; | |
ea1549b3 JG |
1501 | /* C++ vagaries: we may have a type which is derived from |
1502 | a base type which did not have its name defined when the | |
1503 | derived class was output. We fill in the derived class's | |
1504 | base part member's name here in that case. */ | |
1505 | if (TYPE_NAME (SYMBOL_TYPE (sym)) != NULL) | |
1506 | if ((TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_STRUCT | |
c0302457 JG |
1507 | || TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_UNION) |
1508 | && TYPE_N_BASECLASSES (SYMBOL_TYPE (sym))) | |
1509 | { | |
1510 | int j; | |
1511 | for (j = TYPE_N_BASECLASSES (SYMBOL_TYPE (sym)) - 1; j >= 0; j--) | |
1512 | if (TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym), j) == 0) | |
1513 | TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym), j) = | |
1514 | type_name_no_tag (TYPE_BASECLASS (SYMBOL_TYPE (sym), j)); | |
1515 | } | |
1516 | ||
1517 | add_symbol_to_list (sym, &file_symbols); | |
1518 | break; | |
1519 | ||
1520 | case 'T': | |
2778e915 JG |
1521 | /* For a nameless type, we don't want a create a symbol, thus we |
1522 | did not use `sym'. Return without further processing. */ | |
1523 | if (nameless) return NULL; | |
1524 | ||
c0302457 JG |
1525 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; |
1526 | SYMBOL_VALUE (sym) = valu; | |
1527 | SYMBOL_NAMESPACE (sym) = STRUCT_NAMESPACE; | |
1ab3bf1b | 1528 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) |
c0302457 | 1529 | TYPE_NAME (SYMBOL_TYPE (sym)) |
1ab3bf1b | 1530 | = obconcat (&objfile -> type_obstack, "", |
c0302457 JG |
1531 | (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_ENUM |
1532 | ? "enum " | |
1533 | : (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_STRUCT | |
1534 | ? "struct " : "union ")), | |
1535 | SYMBOL_NAME (sym)); | |
1536 | add_symbol_to_list (sym, &file_symbols); | |
1537 | ||
1538 | if (synonym) | |
1539 | { | |
1ab3bf1b JG |
1540 | register struct symbol *typedef_sym = (struct symbol *) |
1541 | obstack_alloc (&objfile -> type_obstack, | |
1542 | sizeof (struct symbol)); | |
c0302457 JG |
1543 | SYMBOL_NAME (typedef_sym) = SYMBOL_NAME (sym); |
1544 | SYMBOL_TYPE (typedef_sym) = SYMBOL_TYPE (sym); | |
1545 | ||
1546 | SYMBOL_CLASS (typedef_sym) = LOC_TYPEDEF; | |
1547 | SYMBOL_VALUE (typedef_sym) = valu; | |
1548 | SYMBOL_NAMESPACE (typedef_sym) = VAR_NAMESPACE; | |
1549 | add_symbol_to_list (typedef_sym, &file_symbols); | |
1550 | } | |
1551 | break; | |
1552 | ||
1553 | case 'V': | |
1554 | /* Static symbol of local scope */ | |
1555 | SYMBOL_CLASS (sym) = LOC_STATIC; | |
1556 | SYMBOL_VALUE_ADDRESS (sym) = valu; | |
1557 | SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; | |
1558 | add_symbol_to_list (sym, &local_symbols); | |
1559 | break; | |
1560 | ||
1561 | case 'v': | |
1562 | /* Reference parameter */ | |
1563 | SYMBOL_CLASS (sym) = LOC_REF_ARG; | |
1564 | SYMBOL_VALUE (sym) = valu; | |
1565 | SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; | |
1566 | add_symbol_to_list (sym, &local_symbols); | |
1567 | break; | |
1568 | ||
1569 | case 'X': | |
1570 | /* This is used by Sun FORTRAN for "function result value". | |
1571 | Sun claims ("dbx and dbxtool interfaces", 2nd ed) | |
1572 | that Pascal uses it too, but when I tried it Pascal used | |
1573 | "x:3" (local symbol) instead. */ | |
1574 | SYMBOL_CLASS (sym) = LOC_LOCAL; | |
1575 | SYMBOL_VALUE (sym) = valu; | |
1576 | SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; | |
1577 | add_symbol_to_list (sym, &local_symbols); | |
1578 | break; | |
1579 | ||
1580 | default: | |
1581 | error ("Invalid symbol data: unknown symbol-type code `%c' at symtab pos %d.", deftype, symnum); | |
1582 | } | |
1583 | return sym; | |
1584 | } | |
1585 | \f | |
1586 | /* What about types defined as forward references inside of a small lexical | |
1587 | scope? */ | |
1588 | /* Add a type to the list of undefined types to be checked through | |
1589 | once this file has been read in. */ | |
a048c8f5 | 1590 | void |
c0302457 JG |
1591 | add_undefined_type (type) |
1592 | struct type *type; | |
1593 | { | |
1594 | if (undef_types_length == undef_types_allocated) | |
1595 | { | |
1596 | undef_types_allocated *= 2; | |
1597 | undef_types = (struct type **) | |
1ab3bf1b | 1598 | xrealloc ((char *) undef_types, |
c0302457 JG |
1599 | undef_types_allocated * sizeof (struct type *)); |
1600 | } | |
1601 | undef_types[undef_types_length++] = type; | |
1602 | } | |
1603 | ||
2a5ec41d JG |
1604 | /* Go through each undefined type, see if it's still undefined, and fix it |
1605 | up if possible. We have two kinds of undefined types: | |
1606 | ||
1607 | TYPE_CODE_ARRAY: Array whose target type wasn't defined yet. | |
1608 | Fix: update array length using the element bounds | |
1609 | and the target type's length. | |
1610 | TYPE_CODE_STRUCT, TYPE_CODE_UNION: Structure whose fields were not | |
1611 | yet defined at the time a pointer to it was made. | |
1612 | Fix: Do a full lookup on the struct/union tag. */ | |
c0302457 JG |
1613 | static void |
1614 | cleanup_undefined_types () | |
1615 | { | |
1616 | struct type **type; | |
1617 | ||
2a5ec41d JG |
1618 | for (type = undef_types; type < undef_types + undef_types_length; type++) { |
1619 | switch (TYPE_CODE (*type)) { | |
c0302457 | 1620 | |
2a5ec41d JG |
1621 | case TYPE_CODE_STRUCT: |
1622 | case TYPE_CODE_UNION: | |
59d97f7f | 1623 | case TYPE_CODE_ENUM: |
2a5ec41d JG |
1624 | { |
1625 | /* Reasonable test to see if it's been defined since. */ | |
1626 | if (TYPE_NFIELDS (*type) == 0) | |
1627 | { | |
1628 | struct pending *ppt; | |
1629 | int i; | |
1630 | /* Name of the type, without "struct" or "union" */ | |
1631 | char *typename = TYPE_NAME (*type); | |
1632 | ||
1633 | if (!strncmp (typename, "struct ", 7)) | |
1634 | typename += 7; | |
1635 | if (!strncmp (typename, "union ", 6)) | |
1636 | typename += 6; | |
59d97f7f SG |
1637 | if (!strncmp (typename, "enum ", 5)) |
1638 | typename += 5; | |
2a5ec41d JG |
1639 | |
1640 | for (ppt = file_symbols; ppt; ppt = ppt->next) | |
1641 | for (i = 0; i < ppt->nsyms; i++) | |
1642 | { | |
1643 | struct symbol *sym = ppt->symbol[i]; | |
1644 | ||
1645 | if (SYMBOL_CLASS (sym) == LOC_TYPEDEF | |
1646 | && SYMBOL_NAMESPACE (sym) == STRUCT_NAMESPACE | |
1647 | && (TYPE_CODE (SYMBOL_TYPE (sym)) == | |
1648 | TYPE_CODE (*type)) | |
1649 | && !strcmp (SYMBOL_NAME (sym), typename)) | |
7e258d18 | 1650 | memcpy (*type, SYMBOL_TYPE (sym), sizeof (struct type)); |
2a5ec41d JG |
1651 | } |
1652 | } | |
1653 | else | |
1654 | /* It has been defined; don't mark it as a stub. */ | |
1655 | TYPE_FLAGS (*type) &= ~TYPE_FLAG_STUB; | |
1656 | } | |
1657 | break; | |
c0302457 | 1658 | |
2a5ec41d JG |
1659 | case TYPE_CODE_ARRAY: |
1660 | { | |
1661 | struct type *range_type; | |
1662 | int lower, upper; | |
1663 | ||
1664 | if (TYPE_LENGTH (*type) != 0) /* Better be unknown */ | |
1665 | goto badtype; | |
1666 | if (TYPE_NFIELDS (*type) != 1) | |
1667 | goto badtype; | |
1668 | range_type = TYPE_FIELD_TYPE (*type, 0); | |
1669 | if (TYPE_CODE (range_type) != TYPE_CODE_RANGE) | |
1670 | goto badtype; | |
1671 | ||
1672 | /* Now recompute the length of the array type, based on its | |
1673 | number of elements and the target type's length. */ | |
1674 | lower = TYPE_FIELD_BITPOS (range_type, 0); | |
1675 | upper = TYPE_FIELD_BITPOS (range_type, 1); | |
1676 | TYPE_LENGTH (*type) = (upper - lower + 1) | |
1677 | * TYPE_LENGTH (TYPE_TARGET_TYPE (*type)); | |
c0302457 | 1678 | } |
2a5ec41d JG |
1679 | break; |
1680 | ||
1681 | default: | |
1682 | badtype: | |
59d97f7f SG |
1683 | error ("GDB internal error. cleanup_undefined_types with bad\ |
1684 | type %d.", TYPE_CODE (*type)); | |
2a5ec41d | 1685 | break; |
c0302457 | 1686 | } |
2a5ec41d | 1687 | } |
c0302457 JG |
1688 | undef_types_length = 0; |
1689 | } | |
1690 | \f | |
1691 | /* Skip rest of this symbol and return an error type. | |
1692 | ||
1693 | General notes on error recovery: error_type always skips to the | |
1694 | end of the symbol (modulo cretinous dbx symbol name continuation). | |
1695 | Thus code like this: | |
1696 | ||
1697 | if (*(*pp)++ != ';') | |
1698 | return error_type (pp); | |
1699 | ||
1700 | is wrong because if *pp starts out pointing at '\0' (typically as the | |
1701 | result of an earlier error), it will be incremented to point to the | |
1702 | start of the next symbol, which might produce strange results, at least | |
1703 | if you run off the end of the string table. Instead use | |
1704 | ||
1705 | if (**pp != ';') | |
1706 | return error_type (pp); | |
1707 | ++*pp; | |
1708 | ||
1709 | or | |
1710 | ||
1711 | if (**pp != ';') | |
1712 | foo = error_type (pp); | |
1713 | else | |
1714 | ++*pp; | |
1715 | ||
1716 | And in case it isn't obvious, the point of all this hair is so the compiler | |
1717 | can define new types and new syntaxes, and old versions of the | |
1718 | debugger will be able to read the new symbol tables. */ | |
1719 | ||
1720 | struct type * | |
1721 | error_type (pp) | |
1722 | char **pp; | |
1723 | { | |
1724 | complain (&error_type_complaint, 0); | |
1725 | while (1) | |
1726 | { | |
1727 | /* Skip to end of symbol. */ | |
1728 | while (**pp != '\0') | |
1729 | (*pp)++; | |
1730 | ||
1731 | /* Check for and handle cretinous dbx symbol name continuation! */ | |
1732 | if ((*pp)[-1] == '\\') | |
1733 | *pp = next_symbol_text (); | |
1734 | else | |
1735 | break; | |
1736 | } | |
1737 | return builtin_type_error; | |
1738 | } | |
1739 | \f | |
1740 | /* Read a dbx type reference or definition; | |
1741 | return the type that is meant. | |
1742 | This can be just a number, in which case it references | |
1743 | a type already defined and placed in type_vector. | |
1744 | Or the number can be followed by an =, in which case | |
1745 | it means to define a new type according to the text that | |
1746 | follows the =. */ | |
1747 | ||
1748 | struct type * | |
1ab3bf1b | 1749 | read_type (pp, objfile) |
c0302457 | 1750 | register char **pp; |
1ab3bf1b | 1751 | struct objfile *objfile; |
c0302457 JG |
1752 | { |
1753 | register struct type *type = 0; | |
1754 | struct type *type1; | |
1755 | int typenums[2]; | |
1756 | int xtypenums[2]; | |
1757 | ||
1758 | /* Read type number if present. The type number may be omitted. | |
1759 | for instance in a two-dimensional array declared with type | |
1760 | "ar1;1;10;ar1;1;10;4". */ | |
1761 | if ((**pp >= '0' && **pp <= '9') | |
1762 | || **pp == '(') | |
1763 | { | |
1764 | read_type_number (pp, typenums); | |
1765 | ||
a048c8f5 JG |
1766 | /* Type is not being defined here. Either it already exists, |
1767 | or this is a forward reference to it. dbx_alloc_type handles | |
1768 | both cases. */ | |
c0302457 | 1769 | if (**pp != '=') |
1ab3bf1b | 1770 | return dbx_alloc_type (typenums, objfile); |
c0302457 | 1771 | |
a048c8f5 JG |
1772 | /* Type is being defined here. */ |
1773 | #if 0 /* Callers aren't prepared for a NULL result! FIXME -- metin! */ | |
1774 | { | |
1775 | struct type *tt; | |
1776 | ||
1777 | /* if such a type already exists, this is an unnecessary duplication | |
1778 | of the stab string, which is common in (RS/6000) xlc generated | |
1779 | objects. In that case, simply return NULL and let the caller take | |
1780 | care of it. */ | |
1781 | ||
1782 | tt = *dbx_lookup_type (typenums); | |
1783 | if (tt && tt->length && tt->code) | |
1784 | return NULL; | |
1785 | } | |
1786 | #endif | |
1787 | ||
c0302457 JG |
1788 | *pp += 2; |
1789 | } | |
1790 | else | |
1791 | { | |
1792 | /* 'typenums=' not present, type is anonymous. Read and return | |
1793 | the definition, but don't put it in the type vector. */ | |
1794 | typenums[0] = typenums[1] = -1; | |
1795 | *pp += 1; | |
1796 | } | |
a048c8f5 | 1797 | |
c0302457 JG |
1798 | switch ((*pp)[-1]) |
1799 | { | |
1800 | case 'x': | |
1801 | { | |
1802 | enum type_code code; | |
1803 | ||
1804 | /* Used to index through file_symbols. */ | |
1805 | struct pending *ppt; | |
1806 | int i; | |
1807 | ||
1808 | /* Name including "struct", etc. */ | |
1809 | char *type_name; | |
1810 | ||
1811 | /* Name without "struct", etc. */ | |
1812 | char *type_name_only; | |
1813 | ||
1814 | { | |
1815 | char *prefix; | |
1816 | char *from, *to; | |
1817 | ||
1818 | /* Set the type code according to the following letter. */ | |
1819 | switch ((*pp)[0]) | |
1820 | { | |
1821 | case 's': | |
1822 | code = TYPE_CODE_STRUCT; | |
1823 | prefix = "struct "; | |
1824 | break; | |
1825 | case 'u': | |
1826 | code = TYPE_CODE_UNION; | |
1827 | prefix = "union "; | |
1828 | break; | |
1829 | case 'e': | |
1830 | code = TYPE_CODE_ENUM; | |
1831 | prefix = "enum "; | |
1832 | break; | |
1833 | default: | |
1834 | return error_type (pp); | |
1835 | } | |
1836 | ||
1837 | to = type_name = (char *) | |
1ab3bf1b | 1838 | obstack_alloc (&objfile -> type_obstack, |
c0302457 JG |
1839 | (strlen (prefix) + |
1840 | ((char *) strchr (*pp, ':') - (*pp)) + 1)); | |
1841 | ||
1842 | /* Copy the prefix. */ | |
1843 | from = prefix; | |
1844 | while (*to++ = *from++) | |
1845 | ; | |
1846 | to--; | |
1847 | ||
1848 | type_name_only = to; | |
1849 | ||
1850 | /* Copy the name. */ | |
1851 | from = *pp + 1; | |
1852 | while ((*to++ = *from++) != ':') | |
1853 | ; | |
1854 | *--to = '\0'; | |
1855 | ||
1856 | /* Set the pointer ahead of the name which we just read. */ | |
1857 | *pp = from; | |
1858 | ||
1859 | #if 0 | |
1860 | /* The following hack is clearly wrong, because it doesn't | |
1861 | check whether we are in a baseclass. I tried to reproduce | |
1862 | the case that it is trying to fix, but I couldn't get | |
1863 | g++ to put out a cross reference to a basetype. Perhaps | |
1864 | it doesn't do it anymore. */ | |
1865 | /* Note: for C++, the cross reference may be to a base type which | |
1866 | has not yet been seen. In this case, we skip to the comma, | |
1867 | which will mark the end of the base class name. (The ':' | |
1868 | at the end of the base class name will be skipped as well.) | |
1869 | But sometimes (ie. when the cross ref is the last thing on | |
1870 | the line) there will be no ','. */ | |
1871 | from = (char *) strchr (*pp, ','); | |
1872 | if (from) | |
1873 | *pp = from; | |
1874 | #endif /* 0 */ | |
1875 | } | |
1876 | ||
1877 | /* Now check to see whether the type has already been declared. */ | |
1878 | /* This is necessary at least in the case where the | |
1879 | program says something like | |
1880 | struct foo bar[5]; | |
1881 | The compiler puts out a cross-reference; we better find | |
1882 | set the length of the structure correctly so we can | |
1883 | set the length of the array. */ | |
1884 | for (ppt = file_symbols; ppt; ppt = ppt->next) | |
1885 | for (i = 0; i < ppt->nsyms; i++) | |
1886 | { | |
1887 | struct symbol *sym = ppt->symbol[i]; | |
1888 | ||
1889 | if (SYMBOL_CLASS (sym) == LOC_TYPEDEF | |
1890 | && SYMBOL_NAMESPACE (sym) == STRUCT_NAMESPACE | |
1891 | && (TYPE_CODE (SYMBOL_TYPE (sym)) == code) | |
1892 | && !strcmp (SYMBOL_NAME (sym), type_name_only)) | |
1893 | { | |
1ab3bf1b | 1894 | obstack_free (&objfile -> type_obstack, type_name); |
c0302457 JG |
1895 | type = SYMBOL_TYPE (sym); |
1896 | return type; | |
1897 | } | |
1898 | } | |
1899 | ||
1900 | /* Didn't find the type to which this refers, so we must | |
1901 | be dealing with a forward reference. Allocate a type | |
1902 | structure for it, and keep track of it so we can | |
1903 | fill in the rest of the fields when we get the full | |
1904 | type. */ | |
1ab3bf1b | 1905 | type = dbx_alloc_type (typenums, objfile); |
c0302457 JG |
1906 | TYPE_CODE (type) = code; |
1907 | TYPE_NAME (type) = type_name; | |
aab77d5f | 1908 | INIT_CPLUS_SPECIFIC(type); |
c0302457 JG |
1909 | TYPE_FLAGS (type) |= TYPE_FLAG_STUB; |
1910 | ||
1911 | add_undefined_type (type); | |
1912 | return type; | |
1913 | } | |
1914 | ||
74f6fb08 JG |
1915 | case '-': /* RS/6000 built-in type */ |
1916 | (*pp)--; | |
1917 | type = builtin_type (pp); /* (in xcoffread.c) */ | |
1918 | goto after_digits; | |
1919 | ||
c0302457 JG |
1920 | case '0': |
1921 | case '1': | |
1922 | case '2': | |
1923 | case '3': | |
1924 | case '4': | |
1925 | case '5': | |
1926 | case '6': | |
1927 | case '7': | |
1928 | case '8': | |
1929 | case '9': | |
1930 | case '(': | |
1931 | (*pp)--; | |
1932 | read_type_number (pp, xtypenums); | |
1933 | type = *dbx_lookup_type (xtypenums); | |
a048c8f5 JG |
1934 | /* fall through */ |
1935 | ||
1936 | after_digits: | |
c0302457 | 1937 | if (type == 0) |
1ab3bf1b | 1938 | type = lookup_fundamental_type (objfile, FT_VOID); |
c0302457 JG |
1939 | if (typenums[0] != -1) |
1940 | *dbx_lookup_type (typenums) = type; | |
1941 | break; | |
1942 | ||
ea1549b3 JG |
1943 | /* In the following types, we must be sure to overwrite any existing |
1944 | type that the typenums refer to, rather than allocating a new one | |
1945 | and making the typenums point to the new one. This is because there | |
1946 | may already be pointers to the existing type (if it had been | |
1947 | forward-referenced), and we must change it to a pointer, function, | |
1948 | reference, or whatever, *in-place*. */ | |
1949 | ||
c0302457 | 1950 | case '*': |
1ab3bf1b | 1951 | type1 = read_type (pp, objfile); |
ea1549b3 | 1952 | type = make_pointer_type (type1, dbx_lookup_type (typenums)); |
a048c8f5 | 1953 | break; |
ea1549b3 JG |
1954 | |
1955 | case '&': /* Reference to another type */ | |
1956 | type1 = read_type (pp, objfile); | |
1957 | type = make_reference_type (type1, dbx_lookup_type (typenums)); | |
1958 | break; | |
1959 | ||
1960 | case 'f': /* Function returning another type */ | |
1961 | type1 = read_type (pp, objfile); | |
1962 | type = make_function_type (type1, dbx_lookup_type (typenums)); | |
c0302457 JG |
1963 | break; |
1964 | ||
4c7c6bab JG |
1965 | case 'k': /* Const qualifier on some type (Sun) */ |
1966 | type = read_type (pp, objfile); | |
1967 | /* FIXME! For now, we ignore const and volatile qualifiers. */ | |
1968 | break; | |
1969 | ||
1970 | case 'B': /* Volatile qual on some type (Sun) */ | |
1971 | type = read_type (pp, objfile); | |
1972 | /* FIXME! For now, we ignore const and volatile qualifiers. */ | |
1973 | break; | |
1974 | ||
ea1549b3 JG |
1975 | /* FIXME -- we should be doing smash_to_XXX types here. */ |
1976 | case '@': /* Member (class & variable) type */ | |
c0302457 | 1977 | { |
1ab3bf1b | 1978 | struct type *domain = read_type (pp, objfile); |
c0302457 JG |
1979 | struct type *memtype; |
1980 | ||
1981 | if (**pp != ',') | |
1982 | /* Invalid member type data format. */ | |
1983 | return error_type (pp); | |
1984 | ++*pp; | |
1985 | ||
1ab3bf1b JG |
1986 | memtype = read_type (pp, objfile); |
1987 | type = dbx_alloc_type (typenums, objfile); | |
c0302457 JG |
1988 | smash_to_member_type (type, domain, memtype); |
1989 | } | |
1990 | break; | |
1991 | ||
ea1549b3 | 1992 | case '#': /* Method (class & fn) type */ |
c0302457 JG |
1993 | if ((*pp)[0] == '#') |
1994 | { | |
1995 | /* We'll get the parameter types from the name. */ | |
1996 | struct type *return_type; | |
1997 | ||
1998 | *pp += 1; | |
1ab3bf1b | 1999 | return_type = read_type (pp, objfile); |
c0302457 | 2000 | if (*(*pp)++ != ';') |
1ab3bf1b | 2001 | complain (&invalid_member_complaint, (char *) symnum); |
c0302457 JG |
2002 | type = allocate_stub_method (return_type); |
2003 | if (typenums[0] != -1) | |
2004 | *dbx_lookup_type (typenums) = type; | |
2005 | } | |
2006 | else | |
2007 | { | |
1ab3bf1b | 2008 | struct type *domain = read_type (pp, objfile); |
c0302457 JG |
2009 | struct type *return_type; |
2010 | struct type **args; | |
2011 | ||
2012 | if (*(*pp)++ != ',') | |
2013 | error ("invalid member type data format, at symtab pos %d.", | |
2014 | symnum); | |
2015 | ||
1ab3bf1b JG |
2016 | return_type = read_type (pp, objfile); |
2017 | args = read_args (pp, ';', objfile); | |
2018 | type = dbx_alloc_type (typenums, objfile); | |
c0302457 JG |
2019 | smash_to_method_type (type, domain, return_type, args); |
2020 | } | |
2021 | break; | |
2022 | ||
ea1549b3 | 2023 | case 'r': /* Range type */ |
1ab3bf1b | 2024 | type = read_range_type (pp, typenums, objfile); |
c0302457 JG |
2025 | if (typenums[0] != -1) |
2026 | *dbx_lookup_type (typenums) = type; | |
2027 | break; | |
2028 | ||
93297ea0 JG |
2029 | case 'b': /* Sun ACC builtin int type */ |
2030 | type = read_sun_builtin_type (pp, typenums, objfile); | |
2031 | if (typenums[0] != -1) | |
2032 | *dbx_lookup_type (typenums) = type; | |
2033 | break; | |
2034 | ||
2035 | case 'R': /* Sun ACC builtin float type */ | |
2036 | type = read_sun_floating_type (pp, typenums, objfile); | |
2037 | if (typenums[0] != -1) | |
2038 | *dbx_lookup_type (typenums) = type; | |
2039 | break; | |
2040 | ||
ea1549b3 | 2041 | case 'e': /* Enumeration type */ |
1ab3bf1b JG |
2042 | type = dbx_alloc_type (typenums, objfile); |
2043 | type = read_enum_type (pp, type, objfile); | |
c0302457 JG |
2044 | *dbx_lookup_type (typenums) = type; |
2045 | break; | |
2046 | ||
ea1549b3 | 2047 | case 's': /* Struct type */ |
1ab3bf1b | 2048 | type = dbx_alloc_type (typenums, objfile); |
2b5a8d9c PB |
2049 | if (!TYPE_NAME (type)) |
2050 | TYPE_NAME (type) = type_synonym_name; | |
c0302457 | 2051 | type_synonym_name = 0; |
1ab3bf1b | 2052 | type = read_struct_type (pp, type, objfile); |
c0302457 JG |
2053 | break; |
2054 | ||
ea1549b3 | 2055 | case 'u': /* Union type */ |
1ab3bf1b | 2056 | type = dbx_alloc_type (typenums, objfile); |
2b5a8d9c PB |
2057 | if (!TYPE_NAME (type)) |
2058 | TYPE_NAME (type) = type_synonym_name; | |
c0302457 | 2059 | type_synonym_name = 0; |
1ab3bf1b | 2060 | type = read_struct_type (pp, type, objfile); |
c0302457 JG |
2061 | TYPE_CODE (type) = TYPE_CODE_UNION; |
2062 | break; | |
2063 | ||
ea1549b3 | 2064 | case 'a': /* Array type */ |
c0302457 JG |
2065 | if (**pp != 'r') |
2066 | return error_type (pp); | |
2067 | ++*pp; | |
2068 | ||
1ab3bf1b JG |
2069 | type = dbx_alloc_type (typenums, objfile); |
2070 | type = read_array_type (pp, type, objfile); | |
c0302457 JG |
2071 | break; |
2072 | ||
2073 | default: | |
2074 | --*pp; /* Go back to the symbol in error */ | |
2075 | /* Particularly important if it was \0! */ | |
2076 | return error_type (pp); | |
2077 | } | |
2078 | ||
2079 | if (type == 0) | |
2080 | abort (); | |
2081 | ||
c0302457 JG |
2082 | return type; |
2083 | } | |
2084 | \f | |
2085 | /* This page contains subroutines of read_type. */ | |
2086 | ||
2087 | /* Read the description of a structure (or union type) | |
2088 | and return an object describing the type. */ | |
2089 | ||
1ab3bf1b JG |
2090 | static struct type * |
2091 | read_struct_type (pp, type, objfile) | |
c0302457 JG |
2092 | char **pp; |
2093 | register struct type *type; | |
1ab3bf1b | 2094 | struct objfile *objfile; |
c0302457 JG |
2095 | { |
2096 | /* Total number of methods defined in this class. | |
2097 | If the class defines two `f' methods, and one `g' method, | |
2098 | then this will have the value 3. */ | |
2099 | int total_length = 0; | |
2100 | ||
2101 | struct nextfield | |
2102 | { | |
2103 | struct nextfield *next; | |
2104 | int visibility; /* 0=public, 1=protected, 2=public */ | |
2105 | struct field field; | |
2106 | }; | |
2107 | ||
2108 | struct next_fnfield | |
2109 | { | |
2110 | struct next_fnfield *next; | |
c0302457 JG |
2111 | struct fn_field fn_field; |
2112 | }; | |
2113 | ||
2114 | struct next_fnfieldlist | |
2115 | { | |
2116 | struct next_fnfieldlist *next; | |
2117 | struct fn_fieldlist fn_fieldlist; | |
2118 | }; | |
2119 | ||
2120 | register struct nextfield *list = 0; | |
2121 | struct nextfield *new; | |
2122 | register char *p; | |
2123 | int nfields = 0; | |
7e258d18 | 2124 | int non_public_fields = 0; |
c0302457 JG |
2125 | register int n; |
2126 | ||
2127 | register struct next_fnfieldlist *mainlist = 0; | |
2128 | int nfn_fields = 0; | |
2129 | ||
c0302457 | 2130 | TYPE_CODE (type) = TYPE_CODE_STRUCT; |
aab77d5f | 2131 | INIT_CPLUS_SPECIFIC(type); |
c0302457 JG |
2132 | |
2133 | /* First comes the total size in bytes. */ | |
2134 | ||
2135 | TYPE_LENGTH (type) = read_number (pp, 0); | |
2136 | ||
2137 | /* C++: Now, if the class is a derived class, then the next character | |
2138 | will be a '!', followed by the number of base classes derived from. | |
2139 | Each element in the list contains visibility information, | |
2140 | the offset of this base class in the derived structure, | |
2141 | and then the base type. */ | |
2142 | if (**pp == '!') | |
2143 | { | |
2144 | int i, n_baseclasses, offset; | |
2145 | struct type *baseclass; | |
2146 | int via_public; | |
2147 | ||
2148 | /* Nonzero if it is a virtual baseclass, i.e., | |
2149 | ||
2150 | struct A{}; | |
2151 | struct B{}; | |
2152 | struct C : public B, public virtual A {}; | |
2153 | ||
2154 | B is a baseclass of C; A is a virtual baseclass for C. This is a C++ | |
2155 | 2.0 language feature. */ | |
2156 | int via_virtual; | |
2157 | ||
2158 | *pp += 1; | |
2159 | ||
7e258d18 PB |
2160 | ALLOCATE_CPLUS_STRUCT_TYPE(type); |
2161 | ||
c0302457 JG |
2162 | n_baseclasses = read_number (pp, ','); |
2163 | TYPE_FIELD_VIRTUAL_BITS (type) = | |
1ab3bf1b JG |
2164 | (B_TYPE *) obstack_alloc (&objfile -> type_obstack, |
2165 | B_BYTES (n_baseclasses)); | |
c0302457 JG |
2166 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), n_baseclasses); |
2167 | ||
2168 | for (i = 0; i < n_baseclasses; i++) | |
2169 | { | |
2170 | if (**pp == '\\') | |
2171 | *pp = next_symbol_text (); | |
2172 | ||
2173 | switch (**pp) | |
2174 | { | |
2175 | case '0': | |
2176 | via_virtual = 0; | |
2177 | break; | |
2178 | case '1': | |
2179 | via_virtual = 1; | |
2180 | break; | |
2181 | default: | |
2182 | /* Bad visibility format. */ | |
2183 | return error_type (pp); | |
2184 | } | |
2185 | ++*pp; | |
2186 | ||
2187 | switch (**pp) | |
2188 | { | |
2189 | case '0': | |
2190 | via_public = 0; | |
7e258d18 | 2191 | non_public_fields++; |
c0302457 JG |
2192 | break; |
2193 | case '2': | |
2194 | via_public = 2; | |
2195 | break; | |
2196 | default: | |
2197 | /* Bad visibility format. */ | |
2198 | return error_type (pp); | |
2199 | } | |
2200 | if (via_virtual) | |
2201 | SET_TYPE_FIELD_VIRTUAL (type, i); | |
2202 | ++*pp; | |
2203 | ||
2204 | /* Offset of the portion of the object corresponding to | |
2205 | this baseclass. Always zero in the absence of | |
2206 | multiple inheritance. */ | |
2207 | offset = read_number (pp, ','); | |
1ab3bf1b | 2208 | baseclass = read_type (pp, objfile); |
c0302457 JG |
2209 | *pp += 1; /* skip trailing ';' */ |
2210 | ||
2211 | /* Make this baseclass visible for structure-printing purposes. */ | |
2212 | new = (struct nextfield *) alloca (sizeof (struct nextfield)); | |
2213 | new->next = list; | |
2214 | list = new; | |
2215 | list->visibility = via_public; | |
2216 | list->field.type = baseclass; | |
2217 | list->field.name = type_name_no_tag (baseclass); | |
2218 | list->field.bitpos = offset; | |
2219 | list->field.bitsize = 0; /* this should be an unpacked field! */ | |
2220 | nfields++; | |
2221 | } | |
2222 | TYPE_N_BASECLASSES (type) = n_baseclasses; | |
2223 | } | |
2224 | ||
2225 | /* Now come the fields, as NAME:?TYPENUM,BITPOS,BITSIZE; for each one. | |
2226 | At the end, we see a semicolon instead of a field. | |
2227 | ||
2228 | In C++, this may wind up being NAME:?TYPENUM:PHYSNAME; for | |
2229 | a static field. | |
2230 | ||
2231 | The `?' is a placeholder for one of '/2' (public visibility), | |
2232 | '/1' (protected visibility), '/0' (private visibility), or nothing | |
2233 | (C style symbol table, public visibility). */ | |
2234 | ||
2235 | /* We better set p right now, in case there are no fields at all... */ | |
2236 | p = *pp; | |
2237 | ||
2238 | while (**pp != ';') | |
2239 | { | |
2240 | /* Check for and handle cretinous dbx symbol name continuation! */ | |
2241 | if (**pp == '\\') *pp = next_symbol_text (); | |
2242 | ||
2243 | /* Get space to record the next field's data. */ | |
2244 | new = (struct nextfield *) alloca (sizeof (struct nextfield)); | |
2245 | new->next = list; | |
2246 | list = new; | |
2247 | ||
2248 | /* Get the field name. */ | |
2249 | p = *pp; | |
2250 | if (*p == CPLUS_MARKER) | |
2251 | { | |
2252 | /* Special GNU C++ name. */ | |
2253 | if (*++p == 'v') | |
2254 | { | |
2255 | const char *prefix; | |
2256 | char *name = 0; | |
2257 | struct type *context; | |
2258 | ||
2259 | switch (*++p) | |
2260 | { | |
2261 | case 'f': | |
2262 | prefix = vptr_name; | |
2263 | break; | |
2264 | case 'b': | |
2265 | prefix = vb_name; | |
2266 | break; | |
2267 | default: | |
f1d77e90 JG |
2268 | complain (&invalid_cpp_abbrev_complaint, *pp); |
2269 | prefix = "INVALID_C++_ABBREV"; | |
2270 | break; | |
c0302457 JG |
2271 | } |
2272 | *pp = p + 1; | |
1ab3bf1b | 2273 | context = read_type (pp, objfile); |
abefb1f1 PB |
2274 | name = type_name_no_tag (context); |
2275 | if (name == 0) | |
c0302457 | 2276 | { |
1ab3bf1b | 2277 | complain (&invalid_cpp_type_complaint, (char *) symnum); |
03c93c66 | 2278 | name = "FOO"; |
c0302457 | 2279 | } |
1ab3bf1b JG |
2280 | list->field.name = obconcat (&objfile -> type_obstack, |
2281 | prefix, name, ""); | |
c0302457 JG |
2282 | p = ++(*pp); |
2283 | if (p[-1] != ':') | |
f1d77e90 | 2284 | complain (&invalid_cpp_abbrev_complaint, *pp); |
1ab3bf1b | 2285 | list->field.type = read_type (pp, objfile); |
c0302457 JG |
2286 | (*pp)++; /* Skip the comma. */ |
2287 | list->field.bitpos = read_number (pp, ';'); | |
2288 | /* This field is unpacked. */ | |
2289 | list->field.bitsize = 0; | |
7e258d18 PB |
2290 | list->visibility = 0; /* private */ |
2291 | non_public_fields++; | |
c0302457 JG |
2292 | } |
2293 | /* GNU C++ anonymous type. */ | |
2294 | else if (*p == '_') | |
2295 | break; | |
2296 | else | |
f1d77e90 | 2297 | complain (&invalid_cpp_abbrev_complaint, *pp); |
c0302457 JG |
2298 | |
2299 | nfields++; | |
2300 | continue; | |
2301 | } | |
2302 | ||
2303 | while (*p != ':') p++; | |
1ab3bf1b JG |
2304 | list->field.name = obsavestring (*pp, p - *pp, |
2305 | &objfile -> type_obstack); | |
c0302457 JG |
2306 | |
2307 | /* C++: Check to see if we have hit the methods yet. */ | |
2308 | if (p[1] == ':') | |
2309 | break; | |
2310 | ||
2311 | *pp = p + 1; | |
2312 | ||
2313 | /* This means we have a visibility for a field coming. */ | |
2314 | if (**pp == '/') | |
2315 | { | |
2316 | switch (*++*pp) | |
2317 | { | |
2318 | case '0': | |
2319 | list->visibility = 0; /* private */ | |
7e258d18 | 2320 | non_public_fields++; |
c0302457 JG |
2321 | *pp += 1; |
2322 | break; | |
2323 | ||
2324 | case '1': | |
2325 | list->visibility = 1; /* protected */ | |
7e258d18 | 2326 | non_public_fields++; |
c0302457 JG |
2327 | *pp += 1; |
2328 | break; | |
2329 | ||
2330 | case '2': | |
2331 | list->visibility = 2; /* public */ | |
2332 | *pp += 1; | |
2333 | break; | |
2334 | } | |
2335 | } | |
2336 | else /* normal dbx-style format. */ | |
2337 | list->visibility = 2; /* public */ | |
2338 | ||
1ab3bf1b | 2339 | list->field.type = read_type (pp, objfile); |
c0302457 JG |
2340 | if (**pp == ':') |
2341 | { | |
2342 | /* Static class member. */ | |
2343 | list->field.bitpos = (long)-1; | |
2344 | p = ++(*pp); | |
2345 | while (*p != ';') p++; | |
2346 | list->field.bitsize = (long) savestring (*pp, p - *pp); | |
2347 | *pp = p + 1; | |
2348 | nfields++; | |
2349 | continue; | |
2350 | } | |
2351 | else if (**pp != ',') | |
2352 | /* Bad structure-type format. */ | |
2353 | return error_type (pp); | |
2354 | ||
2355 | (*pp)++; /* Skip the comma. */ | |
2356 | list->field.bitpos = read_number (pp, ','); | |
2357 | list->field.bitsize = read_number (pp, ';'); | |
2358 | ||
2359 | #if 0 | |
2360 | /* FIXME-tiemann: Can't the compiler put out something which | |
2361 | lets us distinguish these? (or maybe just not put out anything | |
2362 | for the field). What is the story here? What does the compiler | |
2363 | really do? Also, patch gdb.texinfo for this case; I document | |
2364 | it as a possible problem there. Search for "DBX-style". */ | |
2365 | ||
2366 | /* This is wrong because this is identical to the symbols | |
2367 | produced for GCC 0-size arrays. For example: | |
2368 | typedef union { | |
2369 | int num; | |
2370 | char str[0]; | |
2371 | } foo; | |
2372 | The code which dumped core in such circumstances should be | |
2373 | fixed not to dump core. */ | |
2374 | ||
2375 | /* g++ -g0 can put out bitpos & bitsize zero for a static | |
2376 | field. This does not give us any way of getting its | |
2377 | class, so we can't know its name. But we can just | |
2378 | ignore the field so we don't dump core and other nasty | |
2379 | stuff. */ | |
2380 | if (list->field.bitpos == 0 | |
2381 | && list->field.bitsize == 0) | |
2382 | { | |
2383 | complain (&dbx_class_complaint, 0); | |
2384 | /* Ignore this field. */ | |
2385 | list = list->next; | |
2386 | } | |
2387 | else | |
2388 | #endif /* 0 */ | |
2389 | { | |
2390 | /* Detect an unpacked field and mark it as such. | |
2391 | dbx gives a bit size for all fields. | |
2392 | Note that forward refs cannot be packed, | |
2393 | and treat enums as if they had the width of ints. */ | |
2394 | if (TYPE_CODE (list->field.type) != TYPE_CODE_INT | |
2395 | && TYPE_CODE (list->field.type) != TYPE_CODE_ENUM) | |
2396 | list->field.bitsize = 0; | |
2397 | if ((list->field.bitsize == 8 * TYPE_LENGTH (list->field.type) | |
2398 | || (TYPE_CODE (list->field.type) == TYPE_CODE_ENUM | |
2399 | && (list->field.bitsize | |
1ab3bf1b | 2400 | == 8 * TYPE_LENGTH (lookup_fundamental_type (objfile, FT_INTEGER))) |
c0302457 JG |
2401 | ) |
2402 | ) | |
2403 | && | |
2404 | list->field.bitpos % 8 == 0) | |
2405 | list->field.bitsize = 0; | |
2406 | nfields++; | |
2407 | } | |
2408 | } | |
2409 | ||
2410 | if (p[1] == ':') | |
2411 | /* chill the list of fields: the last entry (at the head) | |
2412 | is a partially constructed entry which we now scrub. */ | |
2413 | list = list->next; | |
2414 | ||
2415 | /* Now create the vector of fields, and record how big it is. | |
2416 | We need this info to record proper virtual function table information | |
2417 | for this class's virtual functions. */ | |
2418 | ||
2419 | TYPE_NFIELDS (type) = nfields; | |
1ab3bf1b JG |
2420 | TYPE_FIELDS (type) = (struct field *) |
2421 | obstack_alloc (&objfile -> type_obstack, sizeof (struct field) * nfields); | |
c0302457 | 2422 | |
7e258d18 PB |
2423 | if (non_public_fields) |
2424 | { | |
2425 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
c0302457 | 2426 | |
7e258d18 | 2427 | TYPE_FIELD_PRIVATE_BITS (type) = |
1ab3bf1b JG |
2428 | (B_TYPE *) obstack_alloc (&objfile -> type_obstack, |
2429 | B_BYTES (nfields)); | |
7e258d18 PB |
2430 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); |
2431 | ||
2432 | TYPE_FIELD_PROTECTED_BITS (type) = | |
1ab3bf1b JG |
2433 | (B_TYPE *) obstack_alloc (&objfile -> type_obstack, |
2434 | B_BYTES (nfields)); | |
7e258d18 PB |
2435 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); |
2436 | } | |
c0302457 JG |
2437 | |
2438 | /* Copy the saved-up fields into the field vector. */ | |
2439 | ||
2440 | for (n = nfields; list; list = list->next) | |
2441 | { | |
2442 | n -= 1; | |
2443 | TYPE_FIELD (type, n) = list->field; | |
2444 | if (list->visibility == 0) | |
2445 | SET_TYPE_FIELD_PRIVATE (type, n); | |
2446 | else if (list->visibility == 1) | |
2447 | SET_TYPE_FIELD_PROTECTED (type, n); | |
2448 | } | |
2449 | ||
2450 | /* Now come the method fields, as NAME::methods | |
2451 | where each method is of the form TYPENUM,ARGS,...:PHYSNAME; | |
2452 | At the end, we see a semicolon instead of a field. | |
2453 | ||
2454 | For the case of overloaded operators, the format is | |
256269fc | 2455 | op$::*.methods, where $ is the CPLUS_MARKER (usually '$'), |
c0302457 JG |
2456 | `*' holds the place for an operator name (such as `+=') |
2457 | and `.' marks the end of the operator name. */ | |
2458 | if (p[1] == ':') | |
2459 | { | |
2460 | /* Now, read in the methods. To simplify matters, we | |
2461 | "unread" the name that has been read, so that we can | |
2462 | start from the top. */ | |
2463 | ||
7e258d18 | 2464 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
c0302457 JG |
2465 | /* For each list of method lists... */ |
2466 | do | |
2467 | { | |
2468 | int i; | |
2469 | struct next_fnfield *sublist = 0; | |
2470 | struct type *look_ahead_type = NULL; | |
2471 | int length = 0; | |
2472 | struct next_fnfieldlist *new_mainlist = | |
2473 | (struct next_fnfieldlist *)alloca (sizeof (struct next_fnfieldlist)); | |
2474 | char *main_fn_name; | |
2475 | ||
2476 | p = *pp; | |
2477 | ||
2478 | /* read in the name. */ | |
2479 | while (*p != ':') p++; | |
2480 | if ((*pp)[0] == 'o' && (*pp)[1] == 'p' && (*pp)[2] == CPLUS_MARKER) | |
2481 | { | |
f1d77e90 JG |
2482 | /* This is a completely wierd case. In order to stuff in the |
2483 | names that might contain colons (the usual name delimiter), | |
2484 | Mike Tiemann defined a different name format which is | |
2485 | signalled if the identifier is "op$". In that case, the | |
2486 | format is "op$::XXXX." where XXXX is the name. This is | |
2487 | used for names like "+" or "=". YUUUUUUUK! FIXME! */ | |
c0302457 JG |
2488 | /* This lets the user type "break operator+". |
2489 | We could just put in "+" as the name, but that wouldn't | |
2490 | work for "*". */ | |
2491 | static char opname[32] = {'o', 'p', CPLUS_MARKER}; | |
2492 | char *o = opname + 3; | |
2493 | ||
2494 | /* Skip past '::'. */ | |
abefb1f1 PB |
2495 | *pp = p + 2; |
2496 | if (**pp == '\\') *pp = next_symbol_text (); | |
2497 | p = *pp; | |
c0302457 JG |
2498 | while (*p != '.') |
2499 | *o++ = *p++; | |
abefb1f1 | 2500 | main_fn_name = savestring (opname, o - opname); |
c0302457 JG |
2501 | /* Skip past '.' */ |
2502 | *pp = p + 1; | |
2503 | } | |
2504 | else | |
256269fc | 2505 | { |
c0302457 | 2506 | main_fn_name = savestring (*pp, p - *pp); |
256269fc JG |
2507 | /* Skip past '::'. */ |
2508 | *pp = p + 2; | |
2509 | } | |
c0302457 JG |
2510 | new_mainlist->fn_fieldlist.name = main_fn_name; |
2511 | ||
2512 | do | |
2513 | { | |
2514 | struct next_fnfield *new_sublist = | |
2515 | (struct next_fnfield *)alloca (sizeof (struct next_fnfield)); | |
2516 | ||
2517 | /* Check for and handle cretinous dbx symbol name continuation! */ | |
2518 | if (look_ahead_type == NULL) /* Normal case. */ | |
2519 | { | |
2520 | if (**pp == '\\') *pp = next_symbol_text (); | |
2521 | ||
1ab3bf1b | 2522 | new_sublist->fn_field.type = read_type (pp, objfile); |
c0302457 JG |
2523 | if (**pp != ':') |
2524 | /* Invalid symtab info for method. */ | |
2525 | return error_type (pp); | |
2526 | } | |
2527 | else | |
2528 | { /* g++ version 1 kludge */ | |
2529 | new_sublist->fn_field.type = look_ahead_type; | |
2530 | look_ahead_type = NULL; | |
2531 | } | |
2532 | ||
2533 | *pp += 1; | |
2534 | p = *pp; | |
2535 | while (*p != ';') p++; | |
7fb4dfc0 | 2536 | |
c0302457 JG |
2537 | /* If this is just a stub, then we don't have the |
2538 | real name here. */ | |
7fb4dfc0 MT |
2539 | if (TYPE_FLAGS (new_sublist->fn_field.type) & TYPE_FLAG_STUB) |
2540 | new_sublist->fn_field.is_stub = 1; | |
c0302457 JG |
2541 | new_sublist->fn_field.physname = savestring (*pp, p - *pp); |
2542 | *pp = p + 1; | |
7fb4dfc0 MT |
2543 | |
2544 | /* Set this method's visibility fields. */ | |
2545 | switch (*(*pp)++ - '0') | |
2546 | { | |
2547 | case 0: | |
2548 | new_sublist->fn_field.is_private = 1; | |
2549 | break; | |
2550 | case 1: | |
2551 | new_sublist->fn_field.is_protected = 1; | |
2552 | break; | |
2553 | } | |
2554 | ||
c0302457 JG |
2555 | if (**pp == '\\') *pp = next_symbol_text (); |
2556 | switch (**pp) | |
2557 | { | |
2558 | case 'A': /* Normal functions. */ | |
2559 | new_sublist->fn_field.is_const = 0; | |
2560 | new_sublist->fn_field.is_volatile = 0; | |
2561 | (*pp)++; | |
2562 | break; | |
2563 | case 'B': /* `const' member functions. */ | |
2564 | new_sublist->fn_field.is_const = 1; | |
2565 | new_sublist->fn_field.is_volatile = 0; | |
2566 | (*pp)++; | |
2567 | break; | |
2568 | case 'C': /* `volatile' member function. */ | |
2569 | new_sublist->fn_field.is_const = 0; | |
2570 | new_sublist->fn_field.is_volatile = 1; | |
2571 | (*pp)++; | |
2572 | break; | |
2573 | case 'D': /* `const volatile' member function. */ | |
2574 | new_sublist->fn_field.is_const = 1; | |
2575 | new_sublist->fn_field.is_volatile = 1; | |
2576 | (*pp)++; | |
2577 | break; | |
f1d77e90 JG |
2578 | case '*': /* File compiled with g++ version 1 -- no info */ |
2579 | case '?': | |
2580 | case '.': | |
2581 | break; | |
c0302457 | 2582 | default: |
1ab3bf1b | 2583 | complain (&const_vol_complaint, (char *) (long) **pp); |
f1d77e90 | 2584 | break; |
c0302457 JG |
2585 | } |
2586 | ||
2587 | switch (*(*pp)++) | |
2588 | { | |
2589 | case '*': | |
2590 | /* virtual member function, followed by index. */ | |
2591 | /* The sign bit is set to distinguish pointers-to-methods | |
2592 | from virtual function indicies. Since the array is | |
2593 | in words, the quantity must be shifted left by 1 | |
2594 | on 16 bit machine, and by 2 on 32 bit machine, forcing | |
2595 | the sign bit out, and usable as a valid index into | |
2596 | the array. Remove the sign bit here. */ | |
2597 | new_sublist->fn_field.voffset = | |
2598 | (0x7fffffff & read_number (pp, ';')) + 2; | |
2599 | ||
2600 | if (**pp == '\\') *pp = next_symbol_text (); | |
2601 | ||
2602 | if (**pp == ';' || **pp == '\0') | |
2603 | /* Must be g++ version 1. */ | |
2604 | new_sublist->fn_field.fcontext = 0; | |
2605 | else | |
2606 | { | |
2607 | /* Figure out from whence this virtual function came. | |
2608 | It may belong to virtual function table of | |
2609 | one of its baseclasses. */ | |
1ab3bf1b | 2610 | look_ahead_type = read_type (pp, objfile); |
c0302457 JG |
2611 | if (**pp == ':') |
2612 | { /* g++ version 1 overloaded methods. */ } | |
2613 | else | |
2614 | { | |
2615 | new_sublist->fn_field.fcontext = look_ahead_type; | |
2616 | if (**pp != ';') | |
2617 | return error_type (pp); | |
2618 | else | |
2619 | ++*pp; | |
2620 | look_ahead_type = NULL; | |
2621 | } | |
2622 | } | |
2623 | break; | |
2624 | ||
2625 | case '?': | |
2626 | /* static member function. */ | |
2627 | new_sublist->fn_field.voffset = VOFFSET_STATIC; | |
7fb4dfc0 MT |
2628 | if (strncmp (new_sublist->fn_field.physname, |
2629 | main_fn_name, strlen (main_fn_name))) | |
2630 | new_sublist->fn_field.is_stub = 1; | |
c0302457 | 2631 | break; |
f1d77e90 | 2632 | |
c0302457 | 2633 | default: |
f1d77e90 | 2634 | /* error */ |
1ab3bf1b | 2635 | complain (&member_fn_complaint, (char *) (long) (*pp)[-1]); |
f1d77e90 JG |
2636 | /* Fall through into normal member function. */ |
2637 | ||
2638 | case '.': | |
c0302457 JG |
2639 | /* normal member function. */ |
2640 | new_sublist->fn_field.voffset = 0; | |
2641 | new_sublist->fn_field.fcontext = 0; | |
2642 | break; | |
2643 | } | |
2644 | ||
2645 | new_sublist->next = sublist; | |
2646 | sublist = new_sublist; | |
2647 | length++; | |
2648 | if (**pp == '\\') *pp = next_symbol_text (); | |
2649 | } | |
2650 | while (**pp != ';' && **pp != '\0'); | |
2651 | ||
2652 | *pp += 1; | |
2653 | ||
2654 | new_mainlist->fn_fieldlist.fn_fields = | |
1ab3bf1b | 2655 | (struct fn_field *) obstack_alloc (&objfile -> type_obstack, |
c0302457 | 2656 | sizeof (struct fn_field) * length); |
c0302457 | 2657 | for (i = length; (i--, sublist); sublist = sublist->next) |
7fb4dfc0 | 2658 | new_mainlist->fn_fieldlist.fn_fields[i] = sublist->fn_field; |
c0302457 JG |
2659 | |
2660 | new_mainlist->fn_fieldlist.length = length; | |
2661 | new_mainlist->next = mainlist; | |
2662 | mainlist = new_mainlist; | |
2663 | nfn_fields++; | |
2664 | total_length += length; | |
be1384b0 | 2665 | if (**pp == '\\') *pp = next_symbol_text (); |
c0302457 JG |
2666 | } |
2667 | while (**pp != ';'); | |
2668 | } | |
2669 | ||
2670 | *pp += 1; | |
2671 | ||
c0302457 | 2672 | |
7e258d18 PB |
2673 | if (nfn_fields) |
2674 | { | |
0eb0a820 | 2675 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) |
1ab3bf1b JG |
2676 | obstack_alloc (&objfile -> type_obstack, |
2677 | sizeof (struct fn_fieldlist) * nfn_fields); | |
7e258d18 PB |
2678 | TYPE_NFN_FIELDS (type) = nfn_fields; |
2679 | TYPE_NFN_FIELDS_TOTAL (type) = total_length; | |
2680 | } | |
c0302457 JG |
2681 | |
2682 | { | |
2683 | int i; | |
2684 | for (i = 0; i < TYPE_N_BASECLASSES (type); ++i) | |
2685 | TYPE_NFN_FIELDS_TOTAL (type) += | |
2686 | TYPE_NFN_FIELDS_TOTAL (TYPE_BASECLASS (type, i)); | |
2687 | } | |
2688 | ||
5a4e7215 JG |
2689 | for (n = nfn_fields; mainlist; mainlist = mainlist->next) { |
2690 | --n; /* Circumvent Sun3 compiler bug */ | |
2691 | TYPE_FN_FIELDLISTS (type)[n] = mainlist->fn_fieldlist; | |
2692 | } | |
c0302457 JG |
2693 | |
2694 | if (**pp == '~') | |
2695 | { | |
2696 | *pp += 1; | |
2697 | ||
0e2a896c | 2698 | if (**pp == '=' || **pp == '+' || **pp == '-') |
c0302457 | 2699 | { |
0e2a896c PB |
2700 | /* Obsolete flags that used to indicate the presence |
2701 | of constructors and/or destructors. */ | |
c0302457 JG |
2702 | *pp += 1; |
2703 | } | |
2704 | ||
2705 | /* Read either a '%' or the final ';'. */ | |
2706 | if (*(*pp)++ == '%') | |
2707 | { | |
572acbbe MT |
2708 | /* We'd like to be able to derive the vtable pointer field |
2709 | from the type information, but when it's inherited, that's | |
2710 | hard. A reason it's hard is because we may read in the | |
2711 | info about a derived class before we read in info about | |
2712 | the base class that provides the vtable pointer field. | |
2713 | Once the base info has been read, we could fill in the info | |
2714 | for the derived classes, but for the fact that by then, | |
2715 | we don't remember who needs what. */ | |
2716 | ||
84ffdec2 | 2717 | #if 0 |
572acbbe | 2718 | int predicted_fieldno = -1; |
84ffdec2 | 2719 | #endif |
572acbbe | 2720 | |
c0302457 JG |
2721 | /* Now we must record the virtual function table pointer's |
2722 | field information. */ | |
2723 | ||
2724 | struct type *t; | |
2725 | int i; | |
2726 | ||
572acbbe MT |
2727 | |
2728 | #if 0 | |
2729 | { | |
2730 | /* In version 2, we derive the vfield ourselves. */ | |
2731 | for (n = 0; n < nfields; n++) | |
2732 | { | |
2733 | if (! strncmp (TYPE_FIELD_NAME (type, n), vptr_name, | |
2734 | sizeof (vptr_name) -1)) | |
2735 | { | |
2736 | predicted_fieldno = n; | |
2737 | break; | |
2738 | } | |
2739 | } | |
2740 | if (predicted_fieldno < 0) | |
2741 | for (n = 0; n < TYPE_N_BASECLASSES (type); n++) | |
2742 | if (! TYPE_FIELD_VIRTUAL (type, n) | |
2743 | && TYPE_VPTR_FIELDNO (TYPE_BASECLASS (type, n)) >= 0) | |
2744 | { | |
2745 | predicted_fieldno = TYPE_VPTR_FIELDNO (TYPE_BASECLASS (type, n)); | |
2746 | break; | |
2747 | } | |
2748 | } | |
2749 | #endif | |
2750 | ||
1ab3bf1b | 2751 | t = read_type (pp, objfile); |
c0302457 JG |
2752 | p = (*pp)++; |
2753 | while (*p != '\0' && *p != ';') | |
2754 | p++; | |
2755 | if (*p == '\0') | |
2756 | /* Premature end of symbol. */ | |
2757 | return error_type (pp); | |
2758 | ||
2759 | TYPE_VPTR_BASETYPE (type) = t; | |
2760 | if (type == t) | |
2761 | { | |
2762 | if (TYPE_FIELD_NAME (t, TYPE_N_BASECLASSES (t)) == 0) | |
2763 | { | |
2764 | /* FIXME-tiemann: what's this? */ | |
2765 | #if 0 | |
2766 | TYPE_VPTR_FIELDNO (type) = i = TYPE_N_BASECLASSES (t); | |
2767 | #else | |
2768 | error_type (pp); | |
2769 | #endif | |
2770 | } | |
2771 | else for (i = TYPE_NFIELDS (t) - 1; i >= TYPE_N_BASECLASSES (t); --i) | |
2772 | if (! strncmp (TYPE_FIELD_NAME (t, i), vptr_name, | |
572acbbe | 2773 | sizeof (vptr_name) -1)) |
c0302457 JG |
2774 | { |
2775 | TYPE_VPTR_FIELDNO (type) = i; | |
2776 | break; | |
2777 | } | |
2778 | if (i < 0) | |
2779 | /* Virtual function table field not found. */ | |
2780 | return error_type (pp); | |
2781 | } | |
2782 | else | |
2783 | TYPE_VPTR_FIELDNO (type) = TYPE_VPTR_FIELDNO (t); | |
572acbbe MT |
2784 | |
2785 | #if 0 | |
2786 | if (TYPE_VPTR_FIELDNO (type) != predicted_fieldno) | |
2787 | error ("TYPE_VPTR_FIELDNO miscalculated"); | |
2788 | #endif | |
2789 | ||
c0302457 JG |
2790 | *pp = p + 1; |
2791 | } | |
2792 | } | |
2793 | ||
2794 | return type; | |
2795 | } | |
2796 | ||
2797 | /* Read a definition of an array type, | |
2798 | and create and return a suitable type object. | |
2799 | Also creates a range type which represents the bounds of that | |
2800 | array. */ | |
1ab3bf1b JG |
2801 | static struct type * |
2802 | read_array_type (pp, type, objfile) | |
c0302457 JG |
2803 | register char **pp; |
2804 | register struct type *type; | |
1ab3bf1b | 2805 | struct objfile *objfile; |
c0302457 JG |
2806 | { |
2807 | struct type *index_type, *element_type, *range_type; | |
2808 | int lower, upper; | |
2809 | int adjustable = 0; | |
2810 | ||
2811 | /* Format of an array type: | |
2812 | "ar<index type>;lower;upper;<array_contents_type>". Put code in | |
2813 | to handle this. | |
2814 | ||
2815 | Fortran adjustable arrays use Adigits or Tdigits for lower or upper; | |
2816 | for these, produce a type like float[][]. */ | |
2817 | ||
1ab3bf1b | 2818 | index_type = read_type (pp, objfile); |
c0302457 JG |
2819 | if (**pp != ';') |
2820 | /* Improper format of array type decl. */ | |
2821 | return error_type (pp); | |
2822 | ++*pp; | |
2823 | ||
2824 | if (!(**pp >= '0' && **pp <= '9')) | |
2825 | { | |
2826 | *pp += 1; | |
2827 | adjustable = 1; | |
2828 | } | |
2829 | lower = read_number (pp, ';'); | |
2830 | ||
2831 | if (!(**pp >= '0' && **pp <= '9')) | |
2832 | { | |
2833 | *pp += 1; | |
2834 | adjustable = 1; | |
2835 | } | |
2836 | upper = read_number (pp, ';'); | |
2837 | ||
1ab3bf1b | 2838 | element_type = read_type (pp, objfile); |
c0302457 JG |
2839 | |
2840 | if (adjustable) | |
2841 | { | |
2842 | lower = 0; | |
2843 | upper = -1; | |
2844 | } | |
2845 | ||
2846 | { | |
2847 | /* Create range type. */ | |
1ab3bf1b JG |
2848 | range_type = (struct type *) |
2849 | obstack_alloc (&objfile -> type_obstack, sizeof (struct type)); | |
4ed3a9ea | 2850 | memset (range_type, 0, sizeof (struct type)); |
1ab3bf1b | 2851 | TYPE_OBJFILE (range_type) = objfile; |
c0302457 JG |
2852 | TYPE_CODE (range_type) = TYPE_CODE_RANGE; |
2853 | TYPE_TARGET_TYPE (range_type) = index_type; | |
2854 | ||
2855 | /* This should never be needed. */ | |
2856 | TYPE_LENGTH (range_type) = sizeof (int); | |
2857 | ||
2858 | TYPE_NFIELDS (range_type) = 2; | |
2859 | TYPE_FIELDS (range_type) = | |
1ab3bf1b | 2860 | (struct field *) obstack_alloc (&objfile -> type_obstack, |
c0302457 JG |
2861 | 2 * sizeof (struct field)); |
2862 | TYPE_FIELD_BITPOS (range_type, 0) = lower; | |
2863 | TYPE_FIELD_BITPOS (range_type, 1) = upper; | |
2864 | } | |
2865 | ||
2866 | TYPE_CODE (type) = TYPE_CODE_ARRAY; | |
2867 | TYPE_TARGET_TYPE (type) = element_type; | |
2868 | TYPE_LENGTH (type) = (upper - lower + 1) * TYPE_LENGTH (element_type); | |
2869 | TYPE_NFIELDS (type) = 1; | |
2870 | TYPE_FIELDS (type) = | |
1ab3bf1b | 2871 | (struct field *) obstack_alloc (&objfile -> type_obstack, |
c0302457 JG |
2872 | sizeof (struct field)); |
2873 | TYPE_FIELD_TYPE (type, 0) = range_type; | |
2874 | ||
2a5ec41d JG |
2875 | /* If we have an array whose element type is not yet known, but whose |
2876 | bounds *are* known, record it to be adjusted at the end of the file. */ | |
2877 | if (TYPE_LENGTH (element_type) == 0 && !adjustable) | |
2878 | add_undefined_type (type); | |
2879 | ||
c0302457 JG |
2880 | return type; |
2881 | } | |
2882 | ||
2883 | ||
2884 | /* Read a definition of an enumeration type, | |
2885 | and create and return a suitable type object. | |
2886 | Also defines the symbols that represent the values of the type. */ | |
2887 | ||
1ab3bf1b JG |
2888 | static struct type * |
2889 | read_enum_type (pp, type, objfile) | |
c0302457 JG |
2890 | register char **pp; |
2891 | register struct type *type; | |
1ab3bf1b | 2892 | struct objfile *objfile; |
c0302457 JG |
2893 | { |
2894 | register char *p; | |
2895 | char *name; | |
2896 | register long n; | |
2897 | register struct symbol *sym; | |
2898 | int nsyms = 0; | |
2899 | struct pending **symlist; | |
2900 | struct pending *osyms, *syms; | |
2901 | int o_nsyms; | |
2902 | ||
ea1549b3 JG |
2903 | #if 0 |
2904 | /* FIXME! The stabs produced by Sun CC merrily define things that ought | |
2905 | to be file-scope, between N_FN entries, using N_LSYM. What's a mother | |
2906 | to do? For now, force all enum values to file scope. */ | |
c0302457 JG |
2907 | if (within_function) |
2908 | symlist = &local_symbols; | |
2909 | else | |
ea1549b3 | 2910 | #endif |
c0302457 JG |
2911 | symlist = &file_symbols; |
2912 | osyms = *symlist; | |
2913 | o_nsyms = osyms ? osyms->nsyms : 0; | |
2914 | ||
2915 | /* Read the value-names and their values. | |
2916 | The input syntax is NAME:VALUE,NAME:VALUE, and so on. | |
1ab3bf1b | 2917 | A semicolon or comma instead of a NAME means the end. */ |
c0302457 JG |
2918 | while (**pp && **pp != ';' && **pp != ',') |
2919 | { | |
2920 | /* Check for and handle cretinous dbx symbol name continuation! */ | |
2921 | if (**pp == '\\') *pp = next_symbol_text (); | |
2922 | ||
2923 | p = *pp; | |
2924 | while (*p != ':') p++; | |
1ab3bf1b | 2925 | name = obsavestring (*pp, p - *pp, &objfile -> symbol_obstack); |
c0302457 JG |
2926 | *pp = p + 1; |
2927 | n = read_number (pp, ','); | |
2928 | ||
1ab3bf1b | 2929 | sym = (struct symbol *) obstack_alloc (&objfile -> symbol_obstack, sizeof (struct symbol)); |
4ed3a9ea | 2930 | memset (sym, 0, sizeof (struct symbol)); |
c0302457 JG |
2931 | SYMBOL_NAME (sym) = name; |
2932 | SYMBOL_CLASS (sym) = LOC_CONST; | |
2933 | SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; | |
2934 | SYMBOL_VALUE (sym) = n; | |
2935 | add_symbol_to_list (sym, symlist); | |
2936 | nsyms++; | |
2937 | } | |
2938 | ||
2939 | if (**pp == ';') | |
2940 | (*pp)++; /* Skip the semicolon. */ | |
2941 | ||
2942 | /* Now fill in the fields of the type-structure. */ | |
2943 | ||
2944 | TYPE_LENGTH (type) = sizeof (int); | |
2945 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
2946 | TYPE_NFIELDS (type) = nsyms; | |
1ab3bf1b JG |
2947 | TYPE_FIELDS (type) = (struct field *) |
2948 | obstack_alloc (&objfile -> type_obstack, | |
2949 | sizeof (struct field) * nsyms); | |
c0302457 JG |
2950 | |
2951 | /* Find the symbols for the values and put them into the type. | |
2952 | The symbols can be found in the symlist that we put them on | |
2953 | to cause them to be defined. osyms contains the old value | |
2954 | of that symlist; everything up to there was defined by us. */ | |
2955 | /* Note that we preserve the order of the enum constants, so | |
2956 | that in something like "enum {FOO, LAST_THING=FOO}" we print | |
2957 | FOO, not LAST_THING. */ | |
2958 | ||
2959 | for (syms = *symlist, n = 0; syms; syms = syms->next) | |
2960 | { | |
2961 | int j = 0; | |
2962 | if (syms == osyms) | |
2963 | j = o_nsyms; | |
2964 | for (; j < syms->nsyms; j++,n++) | |
2965 | { | |
2966 | struct symbol *xsym = syms->symbol[j]; | |
2967 | SYMBOL_TYPE (xsym) = type; | |
2968 | TYPE_FIELD_NAME (type, n) = SYMBOL_NAME (xsym); | |
2969 | TYPE_FIELD_VALUE (type, n) = 0; | |
2970 | TYPE_FIELD_BITPOS (type, n) = SYMBOL_VALUE (xsym); | |
2971 | TYPE_FIELD_BITSIZE (type, n) = 0; | |
2972 | } | |
2973 | if (syms == osyms) | |
2974 | break; | |
2975 | } | |
2976 | ||
2977 | #if 0 | |
2978 | /* This screws up perfectly good C programs with enums. FIXME. */ | |
2979 | /* Is this Modula-2's BOOLEAN type? Flag it as such if so. */ | |
2980 | if(TYPE_NFIELDS(type) == 2 && | |
2981 | ((!strcmp(TYPE_FIELD_NAME(type,0),"TRUE") && | |
2982 | !strcmp(TYPE_FIELD_NAME(type,1),"FALSE")) || | |
2983 | (!strcmp(TYPE_FIELD_NAME(type,1),"TRUE") && | |
2984 | !strcmp(TYPE_FIELD_NAME(type,0),"FALSE")))) | |
2985 | TYPE_CODE(type) = TYPE_CODE_BOOL; | |
2986 | #endif | |
2987 | ||
2988 | return type; | |
93297ea0 JG |
2989 | } |
2990 | ||
4c7c6bab JG |
2991 | /* Sun's ACC uses a somewhat saner method for specifying the builtin |
2992 | typedefs in every file (for int, long, etc): | |
2993 | ||
2994 | type = b <signed> <width>; <offset>; <nbits> | |
2995 | signed = u or s. Possible c in addition to u or s (for char?). | |
2996 | offset = offset from high order bit to start bit of type. | |
2997 | width is # bytes in object of this type, nbits is # bits in type. | |
2998 | ||
2999 | The width/offset stuff appears to be for small objects stored in | |
3000 | larger ones (e.g. `shorts' in `int' registers). We ignore it for now, | |
3001 | FIXME. */ | |
3002 | ||
93297ea0 JG |
3003 | static struct type * |
3004 | read_sun_builtin_type (pp, typenums, objfile) | |
3005 | char **pp; | |
3006 | int typenums[2]; | |
3007 | struct objfile *objfile; | |
3008 | { | |
3009 | int nbits; | |
3010 | int signed_type; | |
3011 | ||
3012 | switch (**pp) { | |
3013 | case 's': | |
3014 | signed_type = 1; | |
3015 | break; | |
3016 | case 'u': | |
3017 | signed_type = 0; | |
3018 | break; | |
3019 | default: | |
3020 | return error_type (pp); | |
3021 | } | |
3022 | (*pp)++; | |
3023 | ||
50a11e49 SG |
3024 | /* For some odd reason, all forms of char put a c here. This is strange |
3025 | because no other type has this honor. We can safely ignore this because | |
3026 | we actually determine 'char'acterness by the number of bits specified in | |
3027 | the descriptor. */ | |
3028 | ||
3029 | if (**pp == 'c') | |
3030 | (*pp)++; | |
3031 | ||
93297ea0 JG |
3032 | /* The first number appears to be the number of bytes occupied |
3033 | by this type, except that unsigned short is 4 instead of 2. | |
3034 | Since this information is redundant with the third number, | |
3035 | we will ignore it. */ | |
3036 | read_number (pp, ';'); | |
3037 | ||
3038 | /* The second number is always 0, so ignore it too. */ | |
3039 | read_number (pp, ';'); | |
3040 | ||
3041 | /* The third number is the number of bits for this type. */ | |
3042 | nbits = read_number (pp, 0); | |
3043 | ||
3044 | /* FIXME. Here we should just be able to make a type of the right | |
3045 | number of bits and signedness. FIXME. */ | |
3046 | ||
3047 | if (nbits == TARGET_LONG_LONG_BIT) | |
3048 | return (lookup_fundamental_type (objfile, | |
3049 | signed_type? FT_LONG_LONG: FT_UNSIGNED_LONG_LONG)); | |
3050 | ||
3051 | if (nbits == TARGET_INT_BIT) { | |
3052 | /* FIXME -- the only way to distinguish `int' from `long' | |
3053 | is to look at its name! */ | |
3054 | if (signed_type) { | |
3055 | if (long_kludge_name && long_kludge_name[0] == 'l' /* long */) | |
3056 | return lookup_fundamental_type (objfile, FT_LONG); | |
3057 | else | |
3058 | return lookup_fundamental_type (objfile, FT_INTEGER); | |
3059 | } else { | |
3060 | if (long_kludge_name | |
3061 | && ((long_kludge_name[0] == 'u' /* unsigned */ && | |
3062 | long_kludge_name[9] == 'l' /* long */) | |
3063 | || (long_kludge_name[0] == 'l' /* long unsigned */))) | |
3064 | return lookup_fundamental_type (objfile, FT_UNSIGNED_LONG); | |
3065 | else | |
3066 | return lookup_fundamental_type (objfile, FT_UNSIGNED_INTEGER); | |
3067 | } | |
3068 | } | |
3069 | ||
3070 | if (nbits == TARGET_SHORT_BIT) | |
3071 | return (lookup_fundamental_type (objfile, | |
3072 | signed_type? FT_SHORT: FT_UNSIGNED_SHORT)); | |
3073 | ||
3074 | if (nbits == TARGET_CHAR_BIT) | |
3075 | return (lookup_fundamental_type (objfile, | |
3076 | signed_type? FT_CHAR: FT_UNSIGNED_CHAR)); | |
3077 | ||
3078 | if (nbits == 0) | |
3079 | return lookup_fundamental_type (objfile, FT_VOID); | |
3080 | ||
3081 | return error_type (pp); | |
3082 | } | |
3083 | ||
3084 | static struct type * | |
3085 | read_sun_floating_type (pp, typenums, objfile) | |
3086 | char **pp; | |
3087 | int typenums[2]; | |
3088 | struct objfile *objfile; | |
3089 | { | |
3090 | int nbytes; | |
3091 | ||
3092 | /* The first number has more details about the type, for example | |
3093 | FN_COMPLEX. See the sun stab.h. */ | |
3094 | read_number (pp, ';'); | |
3095 | ||
3096 | /* The second number is the number of bytes occupied by this type */ | |
3097 | nbytes = read_number (pp, ';'); | |
3098 | ||
3099 | if (**pp != 0) | |
3100 | return error_type (pp); | |
3101 | ||
3102 | if (nbytes == TARGET_FLOAT_BIT / TARGET_CHAR_BIT) | |
3103 | return lookup_fundamental_type (objfile, FT_FLOAT); | |
3104 | ||
3105 | if (nbytes == TARGET_DOUBLE_BIT / TARGET_CHAR_BIT) | |
3106 | return lookup_fundamental_type (objfile, FT_DBL_PREC_FLOAT); | |
3107 | ||
3108 | if (nbytes == TARGET_LONG_DOUBLE_BIT / TARGET_CHAR_BIT) | |
3109 | return lookup_fundamental_type (objfile, FT_EXT_PREC_FLOAT); | |
3110 | ||
3111 | return error_type (pp); | |
c0302457 JG |
3112 | } |
3113 | ||
3114 | /* Read a number from the string pointed to by *PP. | |
3115 | The value of *PP is advanced over the number. | |
3116 | If END is nonzero, the character that ends the | |
3117 | number must match END, or an error happens; | |
3118 | and that character is skipped if it does match. | |
3119 | If END is zero, *PP is left pointing to that character. | |
3120 | ||
3121 | If the number fits in a long, set *VALUE and set *BITS to 0. | |
3122 | If not, set *BITS to be the number of bits in the number. | |
3123 | ||
3124 | If encounter garbage, set *BITS to -1. */ | |
3125 | ||
1ab3bf1b | 3126 | static void |
c0302457 JG |
3127 | read_huge_number (pp, end, valu, bits) |
3128 | char **pp; | |
3129 | int end; | |
3130 | long *valu; | |
3131 | int *bits; | |
3132 | { | |
3133 | char *p = *pp; | |
3134 | int sign = 1; | |
3135 | long n = 0; | |
3136 | int radix = 10; | |
3137 | char overflow = 0; | |
3138 | int nbits = 0; | |
3139 | int c; | |
3140 | long upper_limit; | |
3141 | ||
3142 | if (*p == '-') | |
3143 | { | |
3144 | sign = -1; | |
3145 | p++; | |
3146 | } | |
3147 | ||
3148 | /* Leading zero means octal. GCC uses this to output values larger | |
3149 | than an int (because that would be hard in decimal). */ | |
3150 | if (*p == '0') | |
3151 | { | |
3152 | radix = 8; | |
3153 | p++; | |
3154 | } | |
3155 | ||
3156 | upper_limit = LONG_MAX / radix; | |
3157 | while ((c = *p++) >= '0' && c <= ('0' + radix)) | |
3158 | { | |
3159 | if (n <= upper_limit) | |
3160 | { | |
3161 | n *= radix; | |
3162 | n += c - '0'; /* FIXME this overflows anyway */ | |
3163 | } | |
3164 | else | |
3165 | overflow = 1; | |
3166 | ||
3167 | /* This depends on large values being output in octal, which is | |
3168 | what GCC does. */ | |
3169 | if (radix == 8) | |
3170 | { | |
3171 | if (nbits == 0) | |
3172 | { | |
3173 | if (c == '0') | |
3174 | /* Ignore leading zeroes. */ | |
3175 | ; | |
3176 | else if (c == '1') | |
3177 | nbits = 1; | |
3178 | else if (c == '2' || c == '3') | |
3179 | nbits = 2; | |
3180 | else | |
3181 | nbits = 3; | |
3182 | } | |
3183 | else | |
3184 | nbits += 3; | |
3185 | } | |
3186 | } | |
3187 | if (end) | |
3188 | { | |
3189 | if (c && c != end) | |
3190 | { | |
3191 | if (bits != NULL) | |
3192 | *bits = -1; | |
3193 | return; | |
3194 | } | |
3195 | } | |
3196 | else | |
3197 | --p; | |
3198 | ||
3199 | *pp = p; | |
3200 | if (overflow) | |
3201 | { | |
3202 | if (nbits == 0) | |
3203 | { | |
3204 | /* Large decimal constants are an error (because it is hard to | |
3205 | count how many bits are in them). */ | |
3206 | if (bits != NULL) | |
3207 | *bits = -1; | |
3208 | return; | |
3209 | } | |
3210 | ||
3211 | /* -0x7f is the same as 0x80. So deal with it by adding one to | |
3212 | the number of bits. */ | |
3213 | if (sign == -1) | |
3214 | ++nbits; | |
3215 | if (bits) | |
3216 | *bits = nbits; | |
3217 | } | |
3218 | else | |
3219 | { | |
3220 | if (valu) | |
3221 | *valu = n * sign; | |
3222 | if (bits) | |
3223 | *bits = 0; | |
3224 | } | |
3225 | } | |
3226 | ||
1ab3bf1b JG |
3227 | static struct type * |
3228 | read_range_type (pp, typenums, objfile) | |
c0302457 JG |
3229 | char **pp; |
3230 | int typenums[2]; | |
1ab3bf1b | 3231 | struct objfile *objfile; |
c0302457 JG |
3232 | { |
3233 | int rangenums[2]; | |
3234 | long n2, n3; | |
3235 | int n2bits, n3bits; | |
3236 | int self_subrange; | |
3237 | struct type *result_type; | |
3238 | ||
3239 | /* First comes a type we are a subrange of. | |
3240 | In C it is usually 0, 1 or the type being defined. */ | |
3241 | read_type_number (pp, rangenums); | |
3242 | self_subrange = (rangenums[0] == typenums[0] && | |
3243 | rangenums[1] == typenums[1]); | |
3244 | ||
3245 | /* A semicolon should now follow; skip it. */ | |
3246 | if (**pp == ';') | |
3247 | (*pp)++; | |
3248 | ||
3249 | /* The remaining two operands are usually lower and upper bounds | |
3250 | of the range. But in some special cases they mean something else. */ | |
3251 | read_huge_number (pp, ';', &n2, &n2bits); | |
3252 | read_huge_number (pp, ';', &n3, &n3bits); | |
3253 | ||
3254 | if (n2bits == -1 || n3bits == -1) | |
3255 | return error_type (pp); | |
3256 | ||
3257 | /* If limits are huge, must be large integral type. */ | |
3258 | if (n2bits != 0 || n3bits != 0) | |
3259 | { | |
3260 | char got_signed = 0; | |
3261 | char got_unsigned = 0; | |
3262 | /* Number of bits in the type. */ | |
3263 | int nbits; | |
3264 | ||
3265 | /* Range from 0 to <large number> is an unsigned large integral type. */ | |
3266 | if ((n2bits == 0 && n2 == 0) && n3bits != 0) | |
3267 | { | |
3268 | got_unsigned = 1; | |
3269 | nbits = n3bits; | |
3270 | } | |
3271 | /* Range from <large number> to <large number>-1 is a large signed | |
3272 | integral type. */ | |
3273 | else if (n2bits != 0 && n3bits != 0 && n2bits == n3bits + 1) | |
3274 | { | |
3275 | got_signed = 1; | |
3276 | nbits = n2bits; | |
3277 | } | |
3278 | ||
3279 | /* Check for "long long". */ | |
3280 | if (got_signed && nbits == TARGET_LONG_LONG_BIT) | |
1ab3bf1b | 3281 | return (lookup_fundamental_type (objfile, FT_LONG_LONG)); |
c0302457 | 3282 | if (got_unsigned && nbits == TARGET_LONG_LONG_BIT) |
1ab3bf1b | 3283 | return (lookup_fundamental_type (objfile, FT_UNSIGNED_LONG_LONG)); |
c0302457 JG |
3284 | |
3285 | if (got_signed || got_unsigned) | |
3286 | { | |
1ab3bf1b JG |
3287 | result_type = (struct type *) |
3288 | obstack_alloc (&objfile -> type_obstack, | |
3289 | sizeof (struct type)); | |
4ed3a9ea | 3290 | memset (result_type, 0, sizeof (struct type)); |
1ab3bf1b | 3291 | TYPE_OBJFILE (result_type) = objfile; |
c0302457 | 3292 | TYPE_LENGTH (result_type) = nbits / TARGET_CHAR_BIT; |
c0302457 JG |
3293 | TYPE_CODE (result_type) = TYPE_CODE_INT; |
3294 | if (got_unsigned) | |
3295 | TYPE_FLAGS (result_type) |= TYPE_FLAG_UNSIGNED; | |
3296 | return result_type; | |
3297 | } | |
3298 | else | |
3299 | return error_type (pp); | |
3300 | } | |
3301 | ||
3302 | /* A type defined as a subrange of itself, with bounds both 0, is void. */ | |
3303 | if (self_subrange && n2 == 0 && n3 == 0) | |
1ab3bf1b | 3304 | return (lookup_fundamental_type (objfile, FT_VOID)); |
c0302457 JG |
3305 | |
3306 | /* If n3 is zero and n2 is not, we want a floating type, | |
3307 | and n2 is the width in bytes. | |
3308 | ||
3309 | Fortran programs appear to use this for complex types also, | |
3310 | and they give no way to distinguish between double and single-complex! | |
3311 | We don't have complex types, so we would lose on all fortran files! | |
3312 | So return type `double' for all of those. It won't work right | |
2a5ec41d JG |
3313 | for the complex values, but at least it makes the file loadable. |
3314 | ||
3315 | FIXME, we may be able to distinguish these by their names. FIXME. */ | |
c0302457 JG |
3316 | |
3317 | if (n3 == 0 && n2 > 0) | |
3318 | { | |
3319 | if (n2 == sizeof (float)) | |
1ab3bf1b JG |
3320 | return (lookup_fundamental_type (objfile, FT_FLOAT)); |
3321 | return (lookup_fundamental_type (objfile, FT_DBL_PREC_FLOAT)); | |
c0302457 JG |
3322 | } |
3323 | ||
3324 | /* If the upper bound is -1, it must really be an unsigned int. */ | |
3325 | ||
3326 | else if (n2 == 0 && n3 == -1) | |
3327 | { | |
2a5ec41d JG |
3328 | /* FIXME -- the only way to distinguish `unsigned int' from `unsigned |
3329 | long' is to look at its name! */ | |
3330 | if ( | |
3331 | long_kludge_name && ((long_kludge_name[0] == 'u' /* unsigned */ && | |
3332 | long_kludge_name[9] == 'l' /* long */) | |
3333 | || (long_kludge_name[0] == 'l' /* long unsigned */))) | |
1ab3bf1b | 3334 | return (lookup_fundamental_type (objfile, FT_UNSIGNED_LONG)); |
2a5ec41d | 3335 | else |
1ab3bf1b | 3336 | return (lookup_fundamental_type (objfile, FT_UNSIGNED_INTEGER)); |
c0302457 JG |
3337 | } |
3338 | ||
3339 | /* Special case: char is defined (Who knows why) as a subrange of | |
3340 | itself with range 0-127. */ | |
3341 | else if (self_subrange && n2 == 0 && n3 == 127) | |
1ab3bf1b | 3342 | return (lookup_fundamental_type (objfile, FT_CHAR)); |
c0302457 JG |
3343 | |
3344 | /* Assumptions made here: Subrange of self is equivalent to subrange | |
a048c8f5 | 3345 | of int. FIXME: Host and target type-sizes assumed the same. */ |
2a5ec41d JG |
3346 | /* FIXME: This is the *only* place in GDB that depends on comparing |
3347 | some type to a builtin type with ==. Fix it! */ | |
c0302457 JG |
3348 | else if (n2 == 0 |
3349 | && (self_subrange || | |
1ab3bf1b | 3350 | *dbx_lookup_type (rangenums) == lookup_fundamental_type (objfile, FT_INTEGER))) |
c0302457 JG |
3351 | { |
3352 | /* an unsigned type */ | |
3353 | #ifdef LONG_LONG | |
3354 | if (n3 == - sizeof (long long)) | |
1ab3bf1b | 3355 | return (lookup_fundamental_type (objfile, FT_UNSIGNED_LONG_LONG)); |
c0302457 | 3356 | #endif |
2a5ec41d JG |
3357 | /* FIXME -- the only way to distinguish `unsigned int' from `unsigned |
3358 | long' is to look at its name! */ | |
3359 | if (n3 == (unsigned long)~0L && | |
3360 | long_kludge_name && ((long_kludge_name[0] == 'u' /* unsigned */ && | |
3361 | long_kludge_name[9] == 'l' /* long */) | |
3362 | || (long_kludge_name[0] == 'l' /* long unsigned */))) | |
1ab3bf1b | 3363 | return (lookup_fundamental_type (objfile, FT_UNSIGNED_LONG)); |
c0302457 | 3364 | if (n3 == (unsigned int)~0L) |
1ab3bf1b | 3365 | return (lookup_fundamental_type (objfile, FT_UNSIGNED_INTEGER)); |
c0302457 | 3366 | if (n3 == (unsigned short)~0L) |
1ab3bf1b | 3367 | return (lookup_fundamental_type (objfile, FT_UNSIGNED_SHORT)); |
c0302457 | 3368 | if (n3 == (unsigned char)~0L) |
1ab3bf1b | 3369 | return (lookup_fundamental_type (objfile, FT_UNSIGNED_CHAR)); |
c0302457 JG |
3370 | } |
3371 | #ifdef LONG_LONG | |
3372 | else if (n3 == 0 && n2 == -sizeof (long long)) | |
1ab3bf1b | 3373 | return (lookup_fundamental_type (objfile, FT_LONG_LONG)); |
c0302457 JG |
3374 | #endif |
3375 | else if (n2 == -n3 -1) | |
3376 | { | |
3377 | /* a signed type */ | |
2a5ec41d JG |
3378 | /* FIXME -- the only way to distinguish `int' from `long' is to look |
3379 | at its name! */ | |
84ffdec2 | 3380 | if ((n3 ==(long)(((unsigned long)1 << (8 * sizeof (long) - 1)) - 1)) && |
2a5ec41d | 3381 | long_kludge_name && long_kludge_name[0] == 'l' /* long */) |
1ab3bf1b | 3382 | return (lookup_fundamental_type (objfile, FT_LONG)); |
84ffdec2 | 3383 | if (n3 == (long)(((unsigned long)1 << (8 * sizeof (int) - 1)) - 1)) |
1ab3bf1b | 3384 | return (lookup_fundamental_type (objfile, FT_INTEGER)); |
84ffdec2 | 3385 | if (n3 == ( 1 << (8 * sizeof (short) - 1)) - 1) |
1ab3bf1b | 3386 | return (lookup_fundamental_type (objfile, FT_SHORT)); |
84ffdec2 | 3387 | if (n3 == ( 1 << (8 * sizeof (char) - 1)) - 1) |
4341615d | 3388 | return (lookup_fundamental_type (objfile, FT_SIGNED_CHAR)); |
c0302457 JG |
3389 | } |
3390 | ||
3391 | /* We have a real range type on our hands. Allocate space and | |
3392 | return a real pointer. */ | |
3393 | ||
3394 | /* At this point I don't have the faintest idea how to deal with | |
3395 | a self_subrange type; I'm going to assume that this is used | |
3396 | as an idiom, and that all of them are special cases. So . . . */ | |
3397 | if (self_subrange) | |
3398 | return error_type (pp); | |
3399 | ||
1ab3bf1b JG |
3400 | result_type = (struct type *) |
3401 | obstack_alloc (&objfile -> type_obstack, sizeof (struct type)); | |
4ed3a9ea | 3402 | memset (result_type, 0, sizeof (struct type)); |
1ab3bf1b | 3403 | TYPE_OBJFILE (result_type) = objfile; |
c0302457 JG |
3404 | |
3405 | TYPE_CODE (result_type) = TYPE_CODE_RANGE; | |
3406 | ||
3407 | TYPE_TARGET_TYPE (result_type) = *dbx_lookup_type(rangenums); | |
3408 | if (TYPE_TARGET_TYPE (result_type) == 0) { | |
1ab3bf1b JG |
3409 | complain (&range_type_base_complaint, (char *) rangenums[1]); |
3410 | TYPE_TARGET_TYPE (result_type) = lookup_fundamental_type (objfile, FT_INTEGER); | |
c0302457 JG |
3411 | } |
3412 | ||
3413 | TYPE_NFIELDS (result_type) = 2; | |
3414 | TYPE_FIELDS (result_type) = | |
1ab3bf1b JG |
3415 | (struct field *) obstack_alloc (&objfile -> type_obstack, |
3416 | 2 * sizeof (struct field)); | |
4ed3a9ea | 3417 | memset (TYPE_FIELDS (result_type), 0, 2 * sizeof (struct field)); |
c0302457 JG |
3418 | TYPE_FIELD_BITPOS (result_type, 0) = n2; |
3419 | TYPE_FIELD_BITPOS (result_type, 1) = n3; | |
3420 | ||
c0302457 JG |
3421 | TYPE_LENGTH (result_type) = TYPE_LENGTH (TYPE_TARGET_TYPE (result_type)); |
3422 | ||
3423 | return result_type; | |
3424 | } | |
3425 | ||
3426 | /* Read a number from the string pointed to by *PP. | |
3427 | The value of *PP is advanced over the number. | |
3428 | If END is nonzero, the character that ends the | |
3429 | number must match END, or an error happens; | |
3430 | and that character is skipped if it does match. | |
3431 | If END is zero, *PP is left pointing to that character. */ | |
3432 | ||
3433 | long | |
3434 | read_number (pp, end) | |
3435 | char **pp; | |
3436 | int end; | |
3437 | { | |
3438 | register char *p = *pp; | |
3439 | register long n = 0; | |
3440 | register int c; | |
3441 | int sign = 1; | |
3442 | ||
3443 | /* Handle an optional leading minus sign. */ | |
3444 | ||
3445 | if (*p == '-') | |
3446 | { | |
3447 | sign = -1; | |
3448 | p++; | |
3449 | } | |
3450 | ||
3451 | /* Read the digits, as far as they go. */ | |
3452 | ||
3453 | while ((c = *p++) >= '0' && c <= '9') | |
3454 | { | |
3455 | n *= 10; | |
3456 | n += c - '0'; | |
3457 | } | |
3458 | if (end) | |
3459 | { | |
3460 | if (c && c != end) | |
3461 | error ("Invalid symbol data: invalid character \\%03o at symbol pos %d.", c, symnum); | |
3462 | } | |
3463 | else | |
3464 | --p; | |
3465 | ||
3466 | *pp = p; | |
3467 | return n * sign; | |
3468 | } | |
3469 | ||
3470 | /* Read in an argument list. This is a list of types, separated by commas | |
3471 | and terminated with END. Return the list of types read in, or (struct type | |
3472 | **)-1 if there is an error. */ | |
1ab3bf1b JG |
3473 | static struct type ** |
3474 | read_args (pp, end, objfile) | |
c0302457 JG |
3475 | char **pp; |
3476 | int end; | |
1ab3bf1b | 3477 | struct objfile *objfile; |
c0302457 | 3478 | { |
a048c8f5 | 3479 | /* FIXME! Remove this arbitrary limit! */ |
c0302457 JG |
3480 | struct type *types[1024], **rval; /* allow for fns of 1023 parameters */ |
3481 | int n = 0; | |
3482 | ||
3483 | while (**pp != end) | |
3484 | { | |
3485 | if (**pp != ',') | |
3486 | /* Invalid argument list: no ','. */ | |
3487 | return (struct type **)-1; | |
3488 | *pp += 1; | |
3489 | ||
3490 | /* Check for and handle cretinous dbx symbol name continuation! */ | |
3491 | if (**pp == '\\') | |
3492 | *pp = next_symbol_text (); | |
3493 | ||
1ab3bf1b | 3494 | types[n++] = read_type (pp, objfile); |
c0302457 JG |
3495 | } |
3496 | *pp += 1; /* get past `end' (the ':' character) */ | |
3497 | ||
3498 | if (n == 1) | |
3499 | { | |
3500 | rval = (struct type **) xmalloc (2 * sizeof (struct type *)); | |
3501 | } | |
3502 | else if (TYPE_CODE (types[n-1]) != TYPE_CODE_VOID) | |
3503 | { | |
3504 | rval = (struct type **) xmalloc ((n + 1) * sizeof (struct type *)); | |
4ed3a9ea | 3505 | memset (rval + n, 0, sizeof (struct type *)); |
c0302457 JG |
3506 | } |
3507 | else | |
3508 | { | |
3509 | rval = (struct type **) xmalloc (n * sizeof (struct type *)); | |
3510 | } | |
7e258d18 | 3511 | memcpy (rval, types, n * sizeof (struct type *)); |
c0302457 JG |
3512 | return rval; |
3513 | } | |
3514 | ||
3515 | /* Add a common block's start address to the offset of each symbol | |
3516 | declared to be in it (by being between a BCOMM/ECOMM pair that uses | |
3517 | the common block name). */ | |
3518 | ||
3519 | static void | |
3520 | fix_common_block (sym, valu) | |
3521 | struct symbol *sym; | |
3522 | int valu; | |
3523 | { | |
3524 | struct pending *next = (struct pending *) SYMBOL_NAMESPACE (sym); | |
3525 | for ( ; next; next = next->next) | |
3526 | { | |
3527 | register int j; | |
3528 | for (j = next->nsyms - 1; j >= 0; j--) | |
3529 | SYMBOL_VALUE_ADDRESS (next->symbol[j]) += valu; | |
3530 | } | |
3531 | } | |
3532 | ||
3533 | /* Initializer for this module */ | |
3534 | void | |
3535 | _initialize_buildsym () | |
3536 | { | |
3537 | undef_types_allocated = 20; | |
3538 | undef_types_length = 0; | |
3539 | undef_types = (struct type **) xmalloc (undef_types_allocated * | |
3540 | sizeof (struct type *)); | |
3541 | } |