Commit | Line | Data |
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d07734e3 | 1 | /* Support routines for decoding "stabs" debugging information format. |
2a021f21 | 2 | Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993 |
d07734e3 FF |
3 | Free Software Foundation, Inc. |
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 | /* Support routines for reading and decoding debugging information in | |
22 | the "stabs" format. This format is used with many systems that use | |
23 | the a.out object file format, as well as some systems that use | |
24 | COFF or ELF where the stabs data is placed in a special section. | |
25 | Avoid placing any object file format specific code in this file. */ | |
26 | ||
27 | #include "defs.h" | |
28 | #include "bfd.h" | |
29 | #include "obstack.h" | |
30 | #include "symtab.h" | |
31 | #include "gdbtypes.h" | |
51b80b00 | 32 | #include "symfile.h" |
d07734e3 FF |
33 | #include "objfiles.h" |
34 | #include "aout/stab_gnu.h" /* We always use GNU stabs, not native */ | |
35 | #include "buildsym.h" | |
51b80b00 | 36 | #include "complaints.h" |
2e4964ad | 37 | #include "demangle.h" |
d07734e3 FF |
38 | |
39 | /* Ask stabsread.h to define the vars it normally declares `extern'. */ | |
40 | #define EXTERN /**/ | |
41 | #include "stabsread.h" /* Our own declarations */ | |
42 | #undef EXTERN | |
43 | ||
e7177cc2 FF |
44 | /* The routines that read and process a complete stabs for a C struct or |
45 | C++ class pass lists of data member fields and lists of member function | |
46 | fields in an instance of a field_info structure, as defined below. | |
47 | This is part of some reorganization of low level C++ support and is | |
48 | expected to eventually go away... (FIXME) */ | |
49 | ||
50 | struct field_info | |
51 | { | |
52 | struct nextfield | |
53 | { | |
54 | struct nextfield *next; | |
55 | int visibility; | |
56 | struct field field; | |
57 | } *list; | |
58 | struct next_fnfieldlist | |
59 | { | |
60 | struct next_fnfieldlist *next; | |
61 | struct fn_fieldlist fn_fieldlist; | |
62 | } *fnlist; | |
63 | }; | |
64 | ||
d07734e3 FF |
65 | static struct type * |
66 | dbx_alloc_type PARAMS ((int [2], struct objfile *)); | |
67 | ||
68 | static void | |
69 | read_huge_number PARAMS ((char **, int, long *, int *)); | |
70 | ||
71 | static void | |
72 | patch_block_stabs PARAMS ((struct pending *, struct pending_stabs *, | |
73 | struct objfile *)); | |
74 | ||
75 | static void | |
76 | fix_common_block PARAMS ((struct symbol *, int)); | |
77 | ||
78 | static struct type * | |
79 | read_range_type PARAMS ((char **, int [2], struct objfile *)); | |
80 | ||
81 | static struct type * | |
82 | read_sun_builtin_type PARAMS ((char **, int [2], struct objfile *)); | |
83 | ||
84 | static struct type * | |
85 | read_sun_floating_type PARAMS ((char **, int [2], struct objfile *)); | |
86 | ||
87 | static struct type * | |
88 | read_enum_type PARAMS ((char **, struct type *, struct objfile *)); | |
89 | ||
dd469789 | 90 | static struct type * |
a387370d | 91 | rs6000_builtin_type PARAMS ((int)); |
dd469789 | 92 | |
e7177cc2 FF |
93 | static int |
94 | read_member_functions PARAMS ((struct field_info *, char **, struct type *, | |
95 | struct objfile *)); | |
96 | ||
97 | static int | |
98 | read_struct_fields PARAMS ((struct field_info *, char **, struct type *, | |
99 | struct objfile *)); | |
100 | ||
101 | static int | |
102 | read_baseclasses PARAMS ((struct field_info *, char **, struct type *, | |
103 | struct objfile *)); | |
104 | ||
105 | static int | |
106 | read_tilde_fields PARAMS ((struct field_info *, char **, struct type *, | |
107 | struct objfile *)); | |
108 | ||
109 | static int | |
110 | attach_fn_fields_to_type PARAMS ((struct field_info *, struct type *)); | |
111 | ||
112 | static int | |
113 | attach_fields_to_type PARAMS ((struct field_info *, struct type *, | |
114 | struct objfile *)); | |
115 | ||
d07734e3 FF |
116 | static struct type * |
117 | read_struct_type PARAMS ((char **, struct type *, struct objfile *)); | |
118 | ||
119 | static struct type * | |
120 | read_array_type PARAMS ((char **, struct type *, struct objfile *)); | |
121 | ||
122 | static struct type ** | |
123 | read_args PARAMS ((char **, int, struct objfile *)); | |
124 | ||
e7177cc2 FF |
125 | static void |
126 | read_cpp_abbrev PARAMS ((struct field_info *, char **, struct type *, | |
127 | struct objfile *)); | |
128 | ||
d07734e3 FF |
129 | static const char vptr_name[] = { '_','v','p','t','r',CPLUS_MARKER,'\0' }; |
130 | static const char vb_name[] = { '_','v','b',CPLUS_MARKER,'\0' }; | |
131 | ||
132 | /* Define this as 1 if a pcc declaration of a char or short argument | |
133 | gives the correct address. Otherwise assume pcc gives the | |
134 | address of the corresponding int, which is not the same on a | |
135 | big-endian machine. */ | |
136 | ||
137 | #ifndef BELIEVE_PCC_PROMOTION | |
138 | #define BELIEVE_PCC_PROMOTION 0 | |
139 | #endif | |
140 | ||
141 | /* During some calls to read_type (and thus to read_range_type), this | |
142 | contains the name of the type being defined. Range types are only | |
143 | used in C as basic types. We use the name to distinguish the otherwise | |
144 | identical basic types "int" and "long" and their unsigned versions. | |
145 | FIXME, this should disappear with better type management. */ | |
146 | ||
147 | static char *long_kludge_name; | |
148 | ||
149 | #if 0 | |
150 | struct complaint dbx_class_complaint = | |
151 | { | |
152 | "encountered DBX-style class variable debugging information.\n\ | |
153 | You seem to have compiled your program with \ | |
154 | \"g++ -g0\" instead of \"g++ -g\".\n\ | |
155 | Therefore GDB will not know about your class variables", 0, 0 | |
156 | }; | |
157 | #endif | |
158 | ||
159 | struct complaint invalid_cpp_abbrev_complaint = | |
160 | {"invalid C++ abbreviation `%s'", 0, 0}; | |
161 | ||
162 | struct complaint invalid_cpp_type_complaint = | |
163 | {"C++ abbreviated type name unknown at symtab pos %d", 0, 0}; | |
164 | ||
165 | struct complaint member_fn_complaint = | |
166 | {"member function type missing, got '%c'", 0, 0}; | |
167 | ||
168 | struct complaint const_vol_complaint = | |
169 | {"const/volatile indicator missing, got '%c'", 0, 0}; | |
170 | ||
171 | struct complaint error_type_complaint = | |
172 | {"debug info mismatch between compiler and debugger", 0, 0}; | |
173 | ||
174 | struct complaint invalid_member_complaint = | |
175 | {"invalid (minimal) member type data format at symtab pos %d.", 0, 0}; | |
176 | ||
177 | struct complaint range_type_base_complaint = | |
178 | {"base type %d of range type is not defined", 0, 0}; | |
179 | ||
180 | struct complaint reg_value_complaint = | |
181 | {"register number too large in symbol %s", 0, 0}; | |
182 | ||
2a021f21 JG |
183 | struct complaint vtbl_notfound_complaint = |
184 | {"virtual function table pointer not found when defining class `%s'", 0, 0}; | |
185 | ||
186 | struct complaint unrecognized_cplus_name_complaint = | |
187 | {"Unknown C++ symbol name `%s'", 0, 0}; | |
188 | ||
dd469789 | 189 | struct complaint rs6000_builtin_complaint = |
a387370d | 190 | {"Unknown builtin type %d", 0, 0}; |
dd469789 | 191 | |
e7177cc2 FF |
192 | struct complaint stabs_general_complaint = |
193 | {"%s", 0, 0}; | |
194 | ||
d07734e3 FF |
195 | /* Make a list of forward references which haven't been defined. */ |
196 | ||
197 | static struct type **undef_types; | |
198 | static int undef_types_allocated; | |
199 | static int undef_types_length; | |
200 | ||
e7177cc2 FF |
201 | /* Check for and handle cretinous stabs symbol name continuation! */ |
202 | #define STABS_CONTINUE(pp) \ | |
203 | do { \ | |
204 | if (**(pp) == '\\') *(pp) = next_symbol_text (); \ | |
205 | } while (0) | |
206 | ||
d07734e3 FF |
207 | \f |
208 | int | |
209 | hashname (name) | |
210 | char *name; | |
211 | { | |
212 | register char *p = name; | |
213 | register int total = p[0]; | |
214 | register int c; | |
215 | ||
216 | c = p[1]; | |
217 | total += c << 2; | |
218 | if (c) | |
219 | { | |
220 | c = p[2]; | |
221 | total += c << 4; | |
222 | if (c) | |
223 | { | |
224 | total += p[3] << 6; | |
225 | } | |
226 | } | |
227 | ||
228 | /* Ensure result is positive. */ | |
229 | if (total < 0) | |
230 | { | |
231 | total += (1000 << 6); | |
232 | } | |
233 | return (total % HASHSIZE); | |
234 | } | |
235 | ||
236 | \f | |
237 | /* Look up a dbx type-number pair. Return the address of the slot | |
238 | where the type for that number-pair is stored. | |
239 | The number-pair is in TYPENUMS. | |
240 | ||
241 | This can be used for finding the type associated with that pair | |
242 | or for associating a new type with the pair. */ | |
243 | ||
244 | struct type ** | |
245 | dbx_lookup_type (typenums) | |
246 | int typenums[2]; | |
247 | { | |
248 | register int filenum = typenums[0]; | |
249 | register int index = typenums[1]; | |
250 | unsigned old_len; | |
251 | register int real_filenum; | |
252 | register struct header_file *f; | |
253 | int f_orig_length; | |
254 | ||
255 | if (filenum == -1) /* -1,-1 is for temporary types. */ | |
256 | return 0; | |
257 | ||
258 | if (filenum < 0 || filenum >= n_this_object_header_files) | |
259 | error ("Invalid symbol data: type number (%d,%d) out of range at symtab pos %d.", | |
260 | filenum, index, symnum); | |
261 | ||
262 | if (filenum == 0) | |
263 | { | |
a387370d JG |
264 | if (index < 0) |
265 | { | |
266 | /* Caller wants address of address of type. We think | |
267 | that negative (rs6k builtin) types will never appear as | |
268 | "lvalues", (nor should they), so we stuff the real type | |
269 | pointer into a temp, and return its address. If referenced, | |
270 | this will do the right thing. */ | |
271 | static struct type *temp_type; | |
272 | ||
273 | temp_type = rs6000_builtin_type(index); | |
274 | return &temp_type; | |
275 | } | |
276 | ||
d07734e3 FF |
277 | /* Type is defined outside of header files. |
278 | Find it in this object file's type vector. */ | |
279 | if (index >= type_vector_length) | |
280 | { | |
281 | old_len = type_vector_length; | |
282 | if (old_len == 0) | |
283 | { | |
284 | type_vector_length = INITIAL_TYPE_VECTOR_LENGTH; | |
285 | type_vector = (struct type **) | |
286 | malloc (type_vector_length * sizeof (struct type *)); | |
287 | } | |
288 | while (index >= type_vector_length) | |
289 | { | |
290 | type_vector_length *= 2; | |
291 | } | |
292 | type_vector = (struct type **) | |
293 | xrealloc ((char *) type_vector, | |
294 | (type_vector_length * sizeof (struct type *))); | |
295 | memset (&type_vector[old_len], 0, | |
296 | (type_vector_length - old_len) * sizeof (struct type *)); | |
297 | } | |
298 | return (&type_vector[index]); | |
299 | } | |
300 | else | |
301 | { | |
302 | real_filenum = this_object_header_files[filenum]; | |
303 | ||
304 | if (real_filenum >= n_header_files) | |
305 | { | |
306 | abort (); | |
307 | } | |
308 | ||
309 | f = &header_files[real_filenum]; | |
310 | ||
311 | f_orig_length = f->length; | |
312 | if (index >= f_orig_length) | |
313 | { | |
314 | while (index >= f->length) | |
315 | { | |
316 | f->length *= 2; | |
317 | } | |
318 | f->vector = (struct type **) | |
319 | xrealloc ((char *) f->vector, f->length * sizeof (struct type *)); | |
320 | memset (&f->vector[f_orig_length], 0, | |
321 | (f->length - f_orig_length) * sizeof (struct type *)); | |
322 | } | |
323 | return (&f->vector[index]); | |
324 | } | |
325 | } | |
326 | ||
327 | /* Make sure there is a type allocated for type numbers TYPENUMS | |
328 | and return the type object. | |
329 | This can create an empty (zeroed) type object. | |
330 | TYPENUMS may be (-1, -1) to return a new type object that is not | |
331 | put into the type vector, and so may not be referred to by number. */ | |
332 | ||
333 | static struct type * | |
334 | dbx_alloc_type (typenums, objfile) | |
335 | int typenums[2]; | |
336 | struct objfile *objfile; | |
337 | { | |
338 | register struct type **type_addr; | |
339 | ||
340 | if (typenums[0] == -1) | |
341 | { | |
342 | return (alloc_type (objfile)); | |
343 | } | |
344 | ||
345 | type_addr = dbx_lookup_type (typenums); | |
346 | ||
347 | /* If we are referring to a type not known at all yet, | |
348 | allocate an empty type for it. | |
349 | We will fill it in later if we find out how. */ | |
350 | if (*type_addr == 0) | |
351 | { | |
352 | *type_addr = alloc_type (objfile); | |
353 | } | |
354 | ||
355 | return (*type_addr); | |
356 | } | |
357 | ||
358 | /* for all the stabs in a given stab vector, build appropriate types | |
359 | and fix their symbols in given symbol vector. */ | |
360 | ||
361 | static void | |
362 | patch_block_stabs (symbols, stabs, objfile) | |
363 | struct pending *symbols; | |
364 | struct pending_stabs *stabs; | |
365 | struct objfile *objfile; | |
366 | { | |
367 | int ii; | |
368 | char *name; | |
369 | char *pp; | |
370 | struct symbol *sym; | |
371 | ||
372 | if (stabs) | |
373 | { | |
374 | ||
375 | /* for all the stab entries, find their corresponding symbols and | |
376 | patch their types! */ | |
377 | ||
378 | for (ii = 0; ii < stabs->count; ++ii) | |
379 | { | |
380 | name = stabs->stab[ii]; | |
381 | pp = (char*) strchr (name, ':'); | |
382 | sym = find_symbol_in_list (symbols, name, pp-name); | |
383 | if (!sym) | |
384 | { | |
0848ad1c JK |
385 | /* On xcoff, if a global is defined and never referenced, |
386 | ld will remove it from the executable. There is then | |
387 | a N_GSYM stab for it, but no regular (C_EXT) symbol. */ | |
388 | sym = (struct symbol *) | |
389 | obstack_alloc (&objfile->symbol_obstack, | |
390 | sizeof (struct symbol)); | |
391 | ||
392 | memset (sym, 0, sizeof (struct symbol)); | |
393 | SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; | |
394 | SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT; | |
395 | SYMBOL_NAME (sym) = | |
396 | obstack_copy0 (&objfile->symbol_obstack, name, pp - name); | |
397 | pp += 2; | |
398 | if (*(pp-1) == 'F' || *(pp-1) == 'f') | |
399 | { | |
400 | /* I don't think the linker does this with functions, | |
401 | so as far as I know this is never executed. | |
402 | But it doesn't hurt to check. */ | |
403 | SYMBOL_TYPE (sym) = | |
404 | lookup_function_type (read_type (&pp, objfile)); | |
405 | } | |
406 | else | |
407 | { | |
408 | SYMBOL_TYPE (sym) = read_type (&pp, objfile); | |
409 | } | |
410 | add_symbol_to_list (sym, &global_symbols); | |
d07734e3 FF |
411 | } |
412 | else | |
413 | { | |
414 | pp += 2; | |
415 | if (*(pp-1) == 'F' || *(pp-1) == 'f') | |
416 | { | |
417 | SYMBOL_TYPE (sym) = | |
418 | lookup_function_type (read_type (&pp, objfile)); | |
419 | } | |
420 | else | |
421 | { | |
422 | SYMBOL_TYPE (sym) = read_type (&pp, objfile); | |
423 | } | |
424 | } | |
425 | } | |
426 | } | |
427 | } | |
428 | ||
429 | \f | |
430 | /* Read a number by which a type is referred to in dbx data, | |
431 | or perhaps read a pair (FILENUM, TYPENUM) in parentheses. | |
432 | Just a single number N is equivalent to (0,N). | |
433 | Return the two numbers by storing them in the vector TYPENUMS. | |
434 | TYPENUMS will then be used as an argument to dbx_lookup_type. */ | |
435 | ||
436 | void | |
437 | read_type_number (pp, typenums) | |
438 | register char **pp; | |
439 | register int *typenums; | |
440 | { | |
441 | if (**pp == '(') | |
442 | { | |
443 | (*pp)++; | |
444 | typenums[0] = read_number (pp, ','); | |
445 | typenums[1] = read_number (pp, ')'); | |
446 | } | |
447 | else | |
448 | { | |
449 | typenums[0] = 0; | |
450 | typenums[1] = read_number (pp, 0); | |
451 | } | |
452 | } | |
453 | ||
454 | \f | |
455 | /* To handle GNU C++ typename abbreviation, we need to be able to | |
456 | fill in a type's name as soon as space for that type is allocated. | |
457 | `type_synonym_name' is the name of the type being allocated. | |
458 | It is cleared as soon as it is used (lest all allocated types | |
459 | get this name). */ | |
460 | ||
461 | static char *type_synonym_name; | |
462 | ||
463 | /* ARGSUSED */ | |
464 | struct symbol * | |
465 | define_symbol (valu, string, desc, type, objfile) | |
466 | unsigned int valu; | |
467 | char *string; | |
468 | int desc; | |
469 | int type; | |
470 | struct objfile *objfile; | |
471 | { | |
472 | register struct symbol *sym; | |
473 | char *p = (char *) strchr (string, ':'); | |
474 | int deftype; | |
475 | int synonym = 0; | |
476 | register int i; | |
d07734e3 FF |
477 | |
478 | /* We would like to eliminate nameless symbols, but keep their types. | |
479 | E.g. stab entry ":t10=*2" should produce a type 10, which is a pointer | |
94daba7f | 480 | to type 2, but, should not create a symbol to address that type. Since |
d07734e3 FF |
481 | the symbol will be nameless, there is no way any user can refer to it. */ |
482 | ||
483 | int nameless; | |
484 | ||
485 | /* Ignore syms with empty names. */ | |
486 | if (string[0] == 0) | |
487 | return 0; | |
488 | ||
489 | /* Ignore old-style symbols from cc -go */ | |
490 | if (p == 0) | |
491 | return 0; | |
492 | ||
493 | /* If a nameless stab entry, all we need is the type, not the symbol. | |
94daba7f FF |
494 | e.g. ":t10=*2" or a nameless enum like " :T16=ered:0,green:1,blue:2,;" */ |
495 | nameless = (p == string || ((string[0] == ' ') && (string[1] == ':'))); | |
d07734e3 FF |
496 | |
497 | sym = (struct symbol *) | |
498 | obstack_alloc (&objfile -> symbol_obstack, sizeof (struct symbol)); | |
c02a37ea | 499 | memset (sym, 0, sizeof (struct symbol)); |
d07734e3 FF |
500 | |
501 | if (processing_gcc_compilation) | |
502 | { | |
503 | /* GCC 2.x puts the line number in desc. SunOS apparently puts in the | |
504 | number of bytes occupied by a type or object, which we ignore. */ | |
505 | SYMBOL_LINE(sym) = desc; | |
506 | } | |
507 | else | |
508 | { | |
509 | SYMBOL_LINE(sym) = 0; /* unknown */ | |
510 | } | |
511 | ||
512 | if (string[0] == CPLUS_MARKER) | |
513 | { | |
514 | /* Special GNU C++ names. */ | |
515 | switch (string[1]) | |
516 | { | |
517 | case 't': | |
518 | SYMBOL_NAME (sym) = obsavestring ("this", strlen ("this"), | |
519 | &objfile -> symbol_obstack); | |
520 | break; | |
521 | ||
522 | case 'v': /* $vtbl_ptr_type */ | |
523 | /* Was: SYMBOL_NAME (sym) = "vptr"; */ | |
524 | goto normal; | |
525 | ||
526 | case 'e': | |
527 | SYMBOL_NAME (sym) = obsavestring ("eh_throw", strlen ("eh_throw"), | |
528 | &objfile -> symbol_obstack); | |
529 | break; | |
530 | ||
531 | case '_': | |
532 | /* This was an anonymous type that was never fixed up. */ | |
533 | goto normal; | |
534 | ||
535 | default: | |
b646b438 | 536 | complain (&unrecognized_cplus_name_complaint, string); |
2a021f21 | 537 | goto normal; /* Do *something* with it */ |
d07734e3 FF |
538 | } |
539 | } | |
540 | else | |
541 | { | |
542 | normal: | |
2e4964ad | 543 | SYMBOL_LANGUAGE (sym) = current_subfile -> language; |
d07734e3 FF |
544 | SYMBOL_NAME (sym) = (char *) |
545 | obstack_alloc (&objfile -> symbol_obstack, ((p - string) + 1)); | |
546 | /* Open-coded bcopy--saves function call time. */ | |
2e4964ad FF |
547 | /* FIXME: Does it really? Try replacing with simple strcpy and |
548 | try it on an executable with a large symbol table. */ | |
d07734e3 FF |
549 | { |
550 | register char *p1 = string; | |
551 | register char *p2 = SYMBOL_NAME (sym); | |
552 | while (p1 != p) | |
553 | { | |
554 | *p2++ = *p1++; | |
555 | } | |
556 | *p2++ = '\0'; | |
557 | } | |
2e4964ad FF |
558 | |
559 | /* If this symbol is from a C++ compilation, then attempt to cache the | |
560 | demangled form for future reference. This is a typical time versus | |
561 | space tradeoff, that was decided in favor of time because it sped up | |
562 | C++ symbol lookups by a factor of about 20. */ | |
563 | ||
7532cf10 | 564 | SYMBOL_INIT_DEMANGLED_NAME (sym, &objfile->symbol_obstack); |
d07734e3 FF |
565 | } |
566 | p++; | |
9b280a7f | 567 | |
d07734e3 FF |
568 | /* Determine the type of name being defined. */ |
569 | /* The Acorn RISC machine's compiler can put out locals that don't | |
570 | start with "234=" or "(3,4)=", so assume anything other than the | |
571 | deftypes we know how to handle is a local. */ | |
d07734e3 | 572 | if (!strchr ("cfFGpPrStTvVXCR", *p)) |
d07734e3 FF |
573 | deftype = 'l'; |
574 | else | |
575 | deftype = *p++; | |
576 | ||
577 | /* c is a special case, not followed by a type-number. | |
578 | SYMBOL:c=iVALUE for an integer constant symbol. | |
579 | SYMBOL:c=rVALUE for a floating constant symbol. | |
580 | SYMBOL:c=eTYPE,INTVALUE for an enum constant symbol. | |
581 | e.g. "b:c=e6,0" for "const b = blob1" | |
582 | (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */ | |
583 | if (deftype == 'c') | |
584 | { | |
585 | if (*p++ != '=') | |
586 | error ("Invalid symbol data at symtab pos %d.", symnum); | |
587 | switch (*p++) | |
588 | { | |
589 | case 'r': | |
590 | { | |
591 | double d = atof (p); | |
592 | char *dbl_valu; | |
593 | ||
f52bde21 JK |
594 | /* FIXME: lookup_fundamental_type is a hack. We should be |
595 | creating a type especially for the type of float constants. | |
596 | Problem is, what type should it be? We currently have to | |
597 | read this in host floating point format, but what type | |
598 | represents a host format "double"? | |
599 | ||
600 | Also, what should the name of this type be? Should we | |
601 | be using 'S' constants (see stabs.texinfo) instead? */ | |
602 | ||
d07734e3 FF |
603 | SYMBOL_TYPE (sym) = lookup_fundamental_type (objfile, |
604 | FT_DBL_PREC_FLOAT); | |
605 | dbl_valu = (char *) | |
dac9734e | 606 | obstack_alloc (&objfile -> symbol_obstack, sizeof (double)); |
d07734e3 | 607 | memcpy (dbl_valu, &d, sizeof (double)); |
ff580c7b JK |
608 | /* Put it in target byte order, but it's still in host |
609 | floating point format. */ | |
d07734e3 FF |
610 | SWAP_TARGET_AND_HOST (dbl_valu, sizeof (double)); |
611 | SYMBOL_VALUE_BYTES (sym) = dbl_valu; | |
612 | SYMBOL_CLASS (sym) = LOC_CONST_BYTES; | |
613 | } | |
614 | break; | |
615 | case 'i': | |
616 | { | |
f52bde21 JK |
617 | /* Defining integer constants this way is kind of silly, |
618 | since 'e' constants allows the compiler to give not | |
619 | only the value, but the type as well. C has at least | |
620 | int, long, unsigned int, and long long as constant | |
621 | types; other languages probably should have at least | |
622 | unsigned as well as signed constants. */ | |
623 | ||
624 | /* We just need one int constant type for all objfiles. | |
625 | It doesn't depend on languages or anything (arguably its | |
626 | name should be a language-specific name for a type of | |
627 | that size, but I'm inclined to say that if the compiler | |
628 | wants a nice name for the type, it can use 'e'). */ | |
629 | static struct type *int_const_type; | |
630 | ||
631 | /* Yes, this is as long as a *host* int. That is because we | |
632 | use atoi. */ | |
633 | if (int_const_type == NULL) | |
634 | int_const_type = | |
635 | init_type (TYPE_CODE_INT, | |
636 | sizeof (int) * HOST_CHAR_BIT / TARGET_CHAR_BIT, 0, | |
637 | "integer constant", | |
638 | (struct objfile *)NULL); | |
639 | SYMBOL_TYPE (sym) = int_const_type; | |
d07734e3 FF |
640 | SYMBOL_VALUE (sym) = atoi (p); |
641 | SYMBOL_CLASS (sym) = LOC_CONST; | |
642 | } | |
643 | break; | |
644 | case 'e': | |
f52bde21 JK |
645 | /* SYMBOL:c=eTYPE,INTVALUE for a constant symbol whose value |
646 | can be represented as integral. | |
d07734e3 FF |
647 | e.g. "b:c=e6,0" for "const b = blob1" |
648 | (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */ | |
649 | { | |
d07734e3 | 650 | SYMBOL_CLASS (sym) = LOC_CONST; |
f52bde21 JK |
651 | SYMBOL_TYPE (sym) = read_type (&p, objfile); |
652 | ||
653 | if (*p != ',') | |
654 | { | |
655 | SYMBOL_TYPE (sym) = error_type (&p); | |
656 | break; | |
657 | } | |
658 | ++p; | |
659 | ||
660 | /* If the value is too big to fit in an int (perhaps because | |
661 | it is unsigned), or something like that, we silently get | |
662 | a bogus value. The type and everything else about it is | |
663 | correct. Ideally, we should be using whatever we have | |
664 | available for parsing unsigned and long long values, | |
665 | however. */ | |
666 | SYMBOL_VALUE (sym) = atoi (p); | |
d07734e3 FF |
667 | } |
668 | break; | |
669 | default: | |
ff580c7b | 670 | { |
ff580c7b | 671 | SYMBOL_CLASS (sym) = LOC_CONST; |
ff580c7b JK |
672 | SYMBOL_TYPE (sym) = error_type (&p); |
673 | } | |
d07734e3 FF |
674 | } |
675 | SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; | |
676 | add_symbol_to_list (sym, &file_symbols); | |
677 | return sym; | |
678 | } | |
679 | ||
680 | /* Now usually comes a number that says which data type, | |
681 | and possibly more stuff to define the type | |
682 | (all of which is handled by read_type) */ | |
683 | ||
684 | if (deftype == 'p' && *p == 'F') | |
685 | /* pF is a two-letter code that means a function parameter in Fortran. | |
686 | The type-number specifies the type of the return value. | |
687 | Translate it into a pointer-to-function type. */ | |
688 | { | |
689 | p++; | |
690 | SYMBOL_TYPE (sym) | |
691 | = lookup_pointer_type (lookup_function_type (read_type (&p, objfile))); | |
692 | } | |
d07734e3 FF |
693 | else |
694 | { | |
695 | /* The symbol class letter is followed by a type (typically the | |
696 | type of the symbol, or its return-type, or etc). Read it. */ | |
697 | ||
698 | synonym = *p == 't'; | |
699 | ||
700 | if (synonym) | |
701 | { | |
e7177cc2 | 702 | p++; |
d07734e3 FF |
703 | type_synonym_name = obsavestring (SYMBOL_NAME (sym), |
704 | strlen (SYMBOL_NAME (sym)), | |
705 | &objfile -> symbol_obstack); | |
706 | } | |
707 | ||
708 | /* Here we save the name of the symbol for read_range_type, which | |
709 | ends up reading in the basic types. In stabs, unfortunately there | |
710 | is no distinction between "int" and "long" types except their | |
711 | names. Until we work out a saner type policy (eliminating most | |
712 | builtin types and using the names specified in the files), we | |
713 | save away the name so that far away from here in read_range_type, | |
714 | we can examine it to decide between "int" and "long". FIXME. */ | |
715 | long_kludge_name = SYMBOL_NAME (sym); | |
716 | ||
717 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
718 | } | |
719 | ||
720 | switch (deftype) | |
721 | { | |
722 | case 'C': | |
723 | /* The name of a caught exception. */ | |
724 | SYMBOL_CLASS (sym) = LOC_LABEL; | |
725 | SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; | |
726 | SYMBOL_VALUE_ADDRESS (sym) = valu; | |
727 | add_symbol_to_list (sym, &local_symbols); | |
728 | break; | |
729 | ||
730 | case 'f': | |
731 | /* A static function definition. */ | |
732 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
733 | SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; | |
734 | add_symbol_to_list (sym, &file_symbols); | |
735 | /* fall into process_function_types. */ | |
736 | ||
737 | process_function_types: | |
738 | /* Function result types are described as the result type in stabs. | |
739 | We need to convert this to the function-returning-type-X type | |
740 | in GDB. E.g. "int" is converted to "function returning int". */ | |
741 | if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_FUNC) | |
742 | { | |
743 | #if 0 | |
744 | /* This code doesn't work -- it needs to realloc and can't. */ | |
745 | /* Attempt to set up to record a function prototype... */ | |
dac9734e | 746 | struct type *new = alloc_type (objfile); |
d07734e3 FF |
747 | |
748 | /* Generate a template for the type of this function. The | |
749 | types of the arguments will be added as we read the symbol | |
750 | table. */ | |
751 | *new = *lookup_function_type (SYMBOL_TYPE(sym)); | |
752 | SYMBOL_TYPE(sym) = new; | |
753 | TYPE_OBJFILE (new) = objfile; | |
754 | in_function_type = new; | |
755 | #else | |
756 | SYMBOL_TYPE (sym) = lookup_function_type (SYMBOL_TYPE (sym)); | |
757 | #endif | |
758 | } | |
759 | /* fall into process_prototype_types */ | |
760 | ||
761 | process_prototype_types: | |
762 | /* Sun acc puts declared types of arguments here. We don't care | |
763 | about their actual types (FIXME -- we should remember the whole | |
764 | function prototype), but the list may define some new types | |
765 | that we have to remember, so we must scan it now. */ | |
766 | while (*p == ';') { | |
767 | p++; | |
768 | read_type (&p, objfile); | |
769 | } | |
770 | break; | |
771 | ||
772 | case 'F': | |
773 | /* A global function definition. */ | |
774 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
775 | SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; | |
776 | add_symbol_to_list (sym, &global_symbols); | |
777 | goto process_function_types; | |
778 | ||
779 | case 'G': | |
780 | /* For a class G (global) symbol, it appears that the | |
781 | value is not correct. It is necessary to search for the | |
782 | corresponding linker definition to find the value. | |
783 | These definitions appear at the end of the namelist. */ | |
784 | i = hashname (SYMBOL_NAME (sym)); | |
785 | SYMBOL_VALUE_CHAIN (sym) = global_sym_chain[i]; | |
786 | global_sym_chain[i] = sym; | |
787 | SYMBOL_CLASS (sym) = LOC_STATIC; | |
788 | SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; | |
789 | add_symbol_to_list (sym, &global_symbols); | |
790 | break; | |
791 | ||
792 | /* This case is faked by a conditional above, | |
793 | when there is no code letter in the dbx data. | |
794 | Dbx data never actually contains 'l'. */ | |
795 | case 'l': | |
796 | SYMBOL_CLASS (sym) = LOC_LOCAL; | |
797 | SYMBOL_VALUE (sym) = valu; | |
798 | SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; | |
799 | add_symbol_to_list (sym, &local_symbols); | |
800 | break; | |
801 | ||
802 | case 'p': | |
803 | /* Normally this is a parameter, a LOC_ARG. On the i960, it | |
804 | can also be a LOC_LOCAL_ARG depending on symbol type. */ | |
805 | #ifndef DBX_PARM_SYMBOL_CLASS | |
806 | #define DBX_PARM_SYMBOL_CLASS(type) LOC_ARG | |
807 | #endif | |
808 | SYMBOL_CLASS (sym) = DBX_PARM_SYMBOL_CLASS (type); | |
809 | SYMBOL_VALUE (sym) = valu; | |
810 | SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; | |
811 | #if 0 | |
812 | /* This doesn't work yet. */ | |
813 | add_param_to_type (&in_function_type, sym); | |
814 | #endif | |
815 | add_symbol_to_list (sym, &local_symbols); | |
816 | ||
817 | /* If it's gcc-compiled, if it says `short', believe it. */ | |
818 | if (processing_gcc_compilation || BELIEVE_PCC_PROMOTION) | |
819 | break; | |
820 | ||
f52bde21 JK |
821 | #if !BELIEVE_PCC_PROMOTION |
822 | { | |
823 | /* This is the signed type which arguments get promoted to. */ | |
824 | static struct type *pcc_promotion_type; | |
825 | /* This is the unsigned type which arguments get promoted to. */ | |
826 | static struct type *pcc_unsigned_promotion_type; | |
827 | ||
828 | /* Call it "int" because this is mainly C lossage. */ | |
829 | if (pcc_promotion_type == NULL) | |
830 | pcc_promotion_type = | |
831 | init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT, | |
832 | 0, "int", NULL); | |
833 | ||
834 | if (pcc_unsigned_promotion_type == NULL) | |
835 | pcc_unsigned_promotion_type = | |
836 | init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT, | |
837 | TYPE_FLAG_UNSIGNED, "unsigned int", NULL); | |
d07734e3 | 838 | |
f52bde21 JK |
839 | #if defined(BELIEVE_PCC_PROMOTION_TYPE) |
840 | /* This macro is defined on machines (e.g. sparc) where | |
841 | we should believe the type of a PCC 'short' argument, | |
842 | but shouldn't believe the address (the address is | |
843 | the address of the corresponding int). Note that | |
844 | this is only different from the BELIEVE_PCC_PROMOTION | |
845 | case on big-endian machines. | |
846 | ||
847 | My guess is that this correction, as opposed to changing | |
848 | the parameter to an 'int' (as done below, for PCC | |
849 | on most machines), is the right thing to do | |
850 | on all machines, but I don't want to risk breaking | |
851 | something that already works. On most PCC machines, | |
852 | the sparc problem doesn't come up because the calling | |
853 | function has to zero the top bytes (not knowing whether | |
854 | the called function wants an int or a short), so there | |
855 | is no practical difference between an int and a short | |
856 | (except perhaps what happens when the GDB user types | |
857 | "print short_arg = 0x10000;"). | |
858 | ||
859 | Hacked for SunOS 4.1 by gnu@cygnus.com. In 4.1, the compiler | |
860 | actually produces the correct address (we don't need to fix it | |
861 | up). I made this code adapt so that it will offset the symbol | |
862 | if it was pointing at an int-aligned location and not | |
863 | otherwise. This way you can use the same gdb for 4.0.x and | |
864 | 4.1 systems. | |
865 | ||
866 | If the parameter is shorter than an int, and is integral | |
867 | (e.g. char, short, or unsigned equivalent), and is claimed to | |
868 | be passed on an integer boundary, don't believe it! Offset the | |
869 | parameter's address to the tail-end of that integer. */ | |
870 | ||
871 | if (TYPE_LENGTH (SYMBOL_TYPE (sym)) < TYPE_LENGTH (pcc_promotion_type) | |
872 | && TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_INT | |
873 | && 0 == SYMBOL_VALUE (sym) % TYPE_LENGTH (pcc_promotion_type)) | |
874 | { | |
875 | SYMBOL_VALUE (sym) += TYPE_LENGTH (pcc_promotion_type) | |
876 | - TYPE_LENGTH (SYMBOL_TYPE (sym)); | |
877 | } | |
878 | break; | |
879 | ||
d07734e3 FF |
880 | #else /* no BELIEVE_PCC_PROMOTION_TYPE. */ |
881 | ||
f52bde21 JK |
882 | /* If PCC says a parameter is a short or a char, |
883 | it is really an int. */ | |
884 | if (TYPE_LENGTH (SYMBOL_TYPE (sym)) < TYPE_LENGTH (pcc_promotion_type) | |
885 | && TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_INT) | |
886 | { | |
887 | SYMBOL_TYPE (sym) = | |
888 | TYPE_UNSIGNED (SYMBOL_TYPE (sym)) | |
889 | ? pcc_unsigned_promotion_type | |
890 | : pcc_promotion_type; | |
891 | } | |
892 | break; | |
d07734e3 FF |
893 | |
894 | #endif /* no BELIEVE_PCC_PROMOTION_TYPE. */ | |
f52bde21 JK |
895 | } |
896 | #endif /* !BELIEVE_PCC_PROMOTION. */ | |
d07734e3 FF |
897 | |
898 | case 'P': | |
899 | /* acc seems to use P to delare the prototypes of functions that | |
900 | are referenced by this file. gdb is not prepared to deal | |
901 | with this extra information. FIXME, it ought to. */ | |
902 | if (type == N_FUN) | |
903 | goto process_prototype_types; | |
f52bde21 | 904 | /*FALLTHROUGH*/ |
d07734e3 | 905 | |
f52bde21 | 906 | case 'R': |
d07734e3 FF |
907 | /* Parameter which is in a register. */ |
908 | SYMBOL_CLASS (sym) = LOC_REGPARM; | |
909 | SYMBOL_VALUE (sym) = STAB_REG_TO_REGNUM (valu); | |
910 | if (SYMBOL_VALUE (sym) >= NUM_REGS) | |
911 | { | |
2e4964ad | 912 | complain (®_value_complaint, SYMBOL_SOURCE_NAME (sym)); |
d07734e3 FF |
913 | SYMBOL_VALUE (sym) = SP_REGNUM; /* Known safe, though useless */ |
914 | } | |
915 | SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; | |
916 | add_symbol_to_list (sym, &local_symbols); | |
917 | break; | |
918 | ||
d07734e3 FF |
919 | case 'r': |
920 | /* Register variable (either global or local). */ | |
921 | SYMBOL_CLASS (sym) = LOC_REGISTER; | |
922 | SYMBOL_VALUE (sym) = STAB_REG_TO_REGNUM (valu); | |
923 | if (SYMBOL_VALUE (sym) >= NUM_REGS) | |
924 | { | |
2e4964ad | 925 | complain (®_value_complaint, SYMBOL_SOURCE_NAME (sym)); |
d07734e3 FF |
926 | SYMBOL_VALUE (sym) = SP_REGNUM; /* Known safe, though useless */ |
927 | } | |
928 | SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; | |
929 | if (within_function) | |
5afa2040 JK |
930 | { |
931 | /* Sun cc uses a pair of symbols, one 'p' and one 'r' with the same | |
932 | name to represent an argument passed in a register. | |
933 | GCC uses 'P' for the same case. So if we find such a symbol pair | |
934 | we combine it into one 'P' symbol. | |
935 | Note that this code illegally combines | |
936 | main(argc) int argc; { register int argc = 1; } | |
937 | but this case is considered pathological and causes a warning | |
938 | from a decent compiler. */ | |
939 | if (local_symbols | |
940 | && local_symbols->nsyms > 0) | |
941 | { | |
942 | struct symbol *prev_sym; | |
943 | prev_sym = local_symbols->symbol[local_symbols->nsyms - 1]; | |
944 | if (SYMBOL_CLASS (prev_sym) == LOC_ARG | |
945 | && STREQ (SYMBOL_NAME (prev_sym), SYMBOL_NAME(sym))) | |
946 | { | |
947 | SYMBOL_CLASS (prev_sym) = LOC_REGPARM; | |
948 | SYMBOL_VALUE (prev_sym) = SYMBOL_VALUE (sym); | |
949 | sym = prev_sym; | |
950 | break; | |
951 | } | |
952 | } | |
953 | add_symbol_to_list (sym, &local_symbols); | |
954 | } | |
d07734e3 FF |
955 | else |
956 | add_symbol_to_list (sym, &file_symbols); | |
957 | break; | |
958 | ||
959 | case 'S': | |
960 | /* Static symbol at top level of file */ | |
961 | SYMBOL_CLASS (sym) = LOC_STATIC; | |
962 | SYMBOL_VALUE_ADDRESS (sym) = valu; | |
963 | SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; | |
964 | add_symbol_to_list (sym, &file_symbols); | |
965 | break; | |
966 | ||
967 | case 't': | |
968 | /* For a nameless type, we don't want a create a symbol, thus we | |
969 | did not use `sym'. Return without further processing. */ | |
970 | if (nameless) return NULL; | |
971 | ||
972 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
973 | SYMBOL_VALUE (sym) = valu; | |
974 | SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; | |
975 | /* C++ vagaries: we may have a type which is derived from | |
976 | a base type which did not have its name defined when the | |
977 | derived class was output. We fill in the derived class's | |
978 | base part member's name here in that case. */ | |
979 | if (TYPE_NAME (SYMBOL_TYPE (sym)) != NULL) | |
980 | if ((TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_STRUCT | |
981 | || TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_UNION) | |
982 | && TYPE_N_BASECLASSES (SYMBOL_TYPE (sym))) | |
983 | { | |
984 | int j; | |
985 | for (j = TYPE_N_BASECLASSES (SYMBOL_TYPE (sym)) - 1; j >= 0; j--) | |
986 | if (TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym), j) == 0) | |
987 | TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym), j) = | |
988 | type_name_no_tag (TYPE_BASECLASS (SYMBOL_TYPE (sym), j)); | |
989 | } | |
990 | ||
f52bde21 JK |
991 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == NULL) |
992 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_NAME (sym); | |
993 | ||
d07734e3 FF |
994 | add_symbol_to_list (sym, &file_symbols); |
995 | break; | |
996 | ||
997 | case 'T': | |
998 | /* For a nameless type, we don't want a create a symbol, thus we | |
999 | did not use `sym'. Return without further processing. */ | |
1000 | if (nameless) return NULL; | |
1001 | ||
1002 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
1003 | SYMBOL_VALUE (sym) = valu; | |
1004 | SYMBOL_NAMESPACE (sym) = STRUCT_NAMESPACE; | |
1005 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) | |
1006 | TYPE_NAME (SYMBOL_TYPE (sym)) | |
1007 | = obconcat (&objfile -> type_obstack, "", | |
1008 | (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_ENUM | |
1009 | ? "enum " | |
1010 | : (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_STRUCT | |
1011 | ? "struct " : "union ")), | |
1012 | SYMBOL_NAME (sym)); | |
1013 | add_symbol_to_list (sym, &file_symbols); | |
1014 | ||
1015 | if (synonym) | |
1016 | { | |
2e4964ad | 1017 | /* Clone the sym and then modify it. */ |
d07734e3 | 1018 | register struct symbol *typedef_sym = (struct symbol *) |
dac9734e | 1019 | obstack_alloc (&objfile -> symbol_obstack, sizeof (struct symbol)); |
2e4964ad | 1020 | *typedef_sym = *sym; |
d07734e3 FF |
1021 | SYMBOL_CLASS (typedef_sym) = LOC_TYPEDEF; |
1022 | SYMBOL_VALUE (typedef_sym) = valu; | |
1023 | SYMBOL_NAMESPACE (typedef_sym) = VAR_NAMESPACE; | |
1024 | add_symbol_to_list (typedef_sym, &file_symbols); | |
1025 | } | |
1026 | break; | |
1027 | ||
1028 | case 'V': | |
1029 | /* Static symbol of local scope */ | |
1030 | SYMBOL_CLASS (sym) = LOC_STATIC; | |
1031 | SYMBOL_VALUE_ADDRESS (sym) = valu; | |
1032 | SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; | |
1033 | add_symbol_to_list (sym, &local_symbols); | |
1034 | break; | |
1035 | ||
1036 | case 'v': | |
1037 | /* Reference parameter */ | |
1038 | SYMBOL_CLASS (sym) = LOC_REF_ARG; | |
1039 | SYMBOL_VALUE (sym) = valu; | |
1040 | SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; | |
1041 | add_symbol_to_list (sym, &local_symbols); | |
1042 | break; | |
1043 | ||
1044 | case 'X': | |
1045 | /* This is used by Sun FORTRAN for "function result value". | |
1046 | Sun claims ("dbx and dbxtool interfaces", 2nd ed) | |
1047 | that Pascal uses it too, but when I tried it Pascal used | |
1048 | "x:3" (local symbol) instead. */ | |
1049 | SYMBOL_CLASS (sym) = LOC_LOCAL; | |
1050 | SYMBOL_VALUE (sym) = valu; | |
1051 | SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; | |
1052 | add_symbol_to_list (sym, &local_symbols); | |
1053 | break; | |
1054 | ||
1055 | default: | |
1056 | error ("Invalid symbol data: unknown symbol-type code `%c' at symtab pos %d.", deftype, symnum); | |
1057 | } | |
5afa2040 JK |
1058 | |
1059 | /* When passing structures to a function, some systems sometimes pass | |
1060 | the address in a register, not the structure itself. | |
1061 | ||
1062 | If REG_STRUCT_HAS_ADDR yields non-zero we have to convert LOC_REGPARM | |
1063 | to LOC_REGPARM_ADDR for structures and unions. */ | |
1064 | ||
1065 | #if !defined (REG_STRUCT_HAS_ADDR) | |
1066 | #define REG_STRUCT_HAS_ADDR(gcc_p) 0 | |
1067 | #endif | |
1068 | ||
1069 | if (SYMBOL_CLASS (sym) == LOC_REGPARM | |
1070 | && REG_STRUCT_HAS_ADDR (processing_gcc_compilation) | |
1071 | && ( (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_STRUCT) | |
1072 | || (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_UNION))) | |
1073 | SYMBOL_CLASS (sym) = LOC_REGPARM_ADDR; | |
1074 | ||
d07734e3 FF |
1075 | return sym; |
1076 | } | |
1077 | ||
1078 | \f | |
1079 | /* Skip rest of this symbol and return an error type. | |
1080 | ||
1081 | General notes on error recovery: error_type always skips to the | |
1082 | end of the symbol (modulo cretinous dbx symbol name continuation). | |
1083 | Thus code like this: | |
1084 | ||
1085 | if (*(*pp)++ != ';') | |
1086 | return error_type (pp); | |
1087 | ||
1088 | is wrong because if *pp starts out pointing at '\0' (typically as the | |
1089 | result of an earlier error), it will be incremented to point to the | |
1090 | start of the next symbol, which might produce strange results, at least | |
1091 | if you run off the end of the string table. Instead use | |
1092 | ||
1093 | if (**pp != ';') | |
1094 | return error_type (pp); | |
1095 | ++*pp; | |
1096 | ||
1097 | or | |
1098 | ||
1099 | if (**pp != ';') | |
1100 | foo = error_type (pp); | |
1101 | else | |
1102 | ++*pp; | |
1103 | ||
1104 | And in case it isn't obvious, the point of all this hair is so the compiler | |
1105 | can define new types and new syntaxes, and old versions of the | |
1106 | debugger will be able to read the new symbol tables. */ | |
1107 | ||
1108 | struct type * | |
1109 | error_type (pp) | |
1110 | char **pp; | |
1111 | { | |
51b80b00 | 1112 | complain (&error_type_complaint); |
d07734e3 FF |
1113 | while (1) |
1114 | { | |
1115 | /* Skip to end of symbol. */ | |
1116 | while (**pp != '\0') | |
e7177cc2 FF |
1117 | { |
1118 | (*pp)++; | |
1119 | } | |
d07734e3 FF |
1120 | |
1121 | /* Check for and handle cretinous dbx symbol name continuation! */ | |
1122 | if ((*pp)[-1] == '\\') | |
e7177cc2 FF |
1123 | { |
1124 | *pp = next_symbol_text (); | |
1125 | } | |
d07734e3 | 1126 | else |
e7177cc2 FF |
1127 | { |
1128 | break; | |
1129 | } | |
d07734e3 | 1130 | } |
e7177cc2 | 1131 | return (builtin_type_error); |
d07734e3 FF |
1132 | } |
1133 | ||
1134 | \f | |
1135 | /* Read a dbx type reference or definition; | |
1136 | return the type that is meant. | |
1137 | This can be just a number, in which case it references | |
1138 | a type already defined and placed in type_vector. | |
1139 | Or the number can be followed by an =, in which case | |
1140 | it means to define a new type according to the text that | |
1141 | follows the =. */ | |
1142 | ||
1143 | struct type * | |
1144 | read_type (pp, objfile) | |
1145 | register char **pp; | |
1146 | struct objfile *objfile; | |
1147 | { | |
1148 | register struct type *type = 0; | |
1149 | struct type *type1; | |
1150 | int typenums[2]; | |
1151 | int xtypenums[2]; | |
e7177cc2 | 1152 | char type_descriptor; |
d07734e3 FF |
1153 | |
1154 | /* Read type number if present. The type number may be omitted. | |
1155 | for instance in a two-dimensional array declared with type | |
1156 | "ar1;1;10;ar1;1;10;4". */ | |
1157 | if ((**pp >= '0' && **pp <= '9') | |
1158 | || **pp == '(') | |
1159 | { | |
1160 | read_type_number (pp, typenums); | |
1161 | ||
1162 | /* Type is not being defined here. Either it already exists, | |
1163 | or this is a forward reference to it. dbx_alloc_type handles | |
1164 | both cases. */ | |
1165 | if (**pp != '=') | |
1166 | return dbx_alloc_type (typenums, objfile); | |
1167 | ||
1168 | /* Type is being defined here. */ | |
1169 | #if 0 /* Callers aren't prepared for a NULL result! FIXME -- metin! */ | |
1170 | { | |
1171 | struct type *tt; | |
1172 | ||
1173 | /* if such a type already exists, this is an unnecessary duplication | |
1174 | of the stab string, which is common in (RS/6000) xlc generated | |
1175 | objects. In that case, simply return NULL and let the caller take | |
1176 | care of it. */ | |
1177 | ||
1178 | tt = *dbx_lookup_type (typenums); | |
1179 | if (tt && tt->length && tt->code) | |
1180 | return NULL; | |
1181 | } | |
1182 | #endif | |
1183 | ||
1184 | *pp += 2; | |
1185 | } | |
1186 | else | |
1187 | { | |
1188 | /* 'typenums=' not present, type is anonymous. Read and return | |
1189 | the definition, but don't put it in the type vector. */ | |
1190 | typenums[0] = typenums[1] = -1; | |
e7177cc2 | 1191 | (*pp)++; |
d07734e3 FF |
1192 | } |
1193 | ||
e7177cc2 FF |
1194 | type_descriptor = (*pp)[-1]; |
1195 | switch (type_descriptor) | |
d07734e3 FF |
1196 | { |
1197 | case 'x': | |
1198 | { | |
1199 | enum type_code code; | |
1200 | ||
1201 | /* Used to index through file_symbols. */ | |
1202 | struct pending *ppt; | |
1203 | int i; | |
1204 | ||
1205 | /* Name including "struct", etc. */ | |
1206 | char *type_name; | |
1207 | ||
1208 | /* Name without "struct", etc. */ | |
1209 | char *type_name_only; | |
1210 | ||
1211 | { | |
1212 | char *prefix; | |
1213 | char *from, *to; | |
1214 | ||
1215 | /* Set the type code according to the following letter. */ | |
1216 | switch ((*pp)[0]) | |
1217 | { | |
1218 | case 's': | |
1219 | code = TYPE_CODE_STRUCT; | |
1220 | prefix = "struct "; | |
1221 | break; | |
1222 | case 'u': | |
1223 | code = TYPE_CODE_UNION; | |
1224 | prefix = "union "; | |
1225 | break; | |
1226 | case 'e': | |
1227 | code = TYPE_CODE_ENUM; | |
1228 | prefix = "enum "; | |
1229 | break; | |
1230 | default: | |
1231 | return error_type (pp); | |
1232 | } | |
1233 | ||
1234 | to = type_name = (char *) | |
1235 | obstack_alloc (&objfile -> type_obstack, | |
1236 | (strlen (prefix) + | |
1237 | ((char *) strchr (*pp, ':') - (*pp)) + 1)); | |
1238 | ||
1239 | /* Copy the prefix. */ | |
1240 | from = prefix; | |
a8a69e63 | 1241 | while ((*to++ = *from++) != '\0') |
d07734e3 FF |
1242 | ; |
1243 | to--; | |
1244 | ||
1245 | type_name_only = to; | |
1246 | ||
1247 | /* Copy the name. */ | |
1248 | from = *pp + 1; | |
1249 | while ((*to++ = *from++) != ':') | |
1250 | ; | |
1251 | *--to = '\0'; | |
1252 | ||
1253 | /* Set the pointer ahead of the name which we just read. */ | |
1254 | *pp = from; | |
1255 | ||
1256 | #if 0 | |
1257 | /* The following hack is clearly wrong, because it doesn't | |
1258 | check whether we are in a baseclass. I tried to reproduce | |
1259 | the case that it is trying to fix, but I couldn't get | |
1260 | g++ to put out a cross reference to a basetype. Perhaps | |
1261 | it doesn't do it anymore. */ | |
1262 | /* Note: for C++, the cross reference may be to a base type which | |
1263 | has not yet been seen. In this case, we skip to the comma, | |
1264 | which will mark the end of the base class name. (The ':' | |
1265 | at the end of the base class name will be skipped as well.) | |
1266 | But sometimes (ie. when the cross ref is the last thing on | |
1267 | the line) there will be no ','. */ | |
1268 | from = (char *) strchr (*pp, ','); | |
1269 | if (from) | |
1270 | *pp = from; | |
1271 | #endif /* 0 */ | |
1272 | } | |
1273 | ||
1274 | /* Now check to see whether the type has already been declared. */ | |
1275 | /* This is necessary at least in the case where the | |
1276 | program says something like | |
1277 | struct foo bar[5]; | |
1278 | The compiler puts out a cross-reference; we better find | |
1279 | set the length of the structure correctly so we can | |
1280 | set the length of the array. */ | |
1281 | for (ppt = file_symbols; ppt; ppt = ppt->next) | |
1282 | for (i = 0; i < ppt->nsyms; i++) | |
1283 | { | |
1284 | struct symbol *sym = ppt->symbol[i]; | |
1285 | ||
1286 | if (SYMBOL_CLASS (sym) == LOC_TYPEDEF | |
1287 | && SYMBOL_NAMESPACE (sym) == STRUCT_NAMESPACE | |
1288 | && (TYPE_CODE (SYMBOL_TYPE (sym)) == code) | |
2e4964ad | 1289 | && STREQ (SYMBOL_NAME (sym), type_name_only)) |
d07734e3 FF |
1290 | { |
1291 | obstack_free (&objfile -> type_obstack, type_name); | |
1292 | type = SYMBOL_TYPE (sym); | |
1293 | return type; | |
1294 | } | |
1295 | } | |
1296 | ||
1297 | /* Didn't find the type to which this refers, so we must | |
1298 | be dealing with a forward reference. Allocate a type | |
1299 | structure for it, and keep track of it so we can | |
1300 | fill in the rest of the fields when we get the full | |
1301 | type. */ | |
1302 | type = dbx_alloc_type (typenums, objfile); | |
1303 | TYPE_CODE (type) = code; | |
1304 | TYPE_NAME (type) = type_name; | |
1305 | INIT_CPLUS_SPECIFIC(type); | |
1306 | TYPE_FLAGS (type) |= TYPE_FLAG_STUB; | |
1307 | ||
1308 | add_undefined_type (type); | |
1309 | return type; | |
1310 | } | |
1311 | ||
1312 | case '-': /* RS/6000 built-in type */ | |
d07734e3 FF |
1313 | case '0': |
1314 | case '1': | |
1315 | case '2': | |
1316 | case '3': | |
1317 | case '4': | |
1318 | case '5': | |
1319 | case '6': | |
1320 | case '7': | |
1321 | case '8': | |
1322 | case '9': | |
1323 | case '(': | |
f52bde21 JK |
1324 | |
1325 | /* The type is being defined to another type. When we support | |
1326 | Ada (and arguably for C, so "whatis foo" can give "size_t", | |
1327 | "wchar_t", or whatever it was declared as) we'll need to | |
1328 | allocate a distinct type here rather than returning the | |
1329 | existing one. GCC is currently (deliberately) incapable of | |
1330 | putting out the debugging information to do that, however. */ | |
1331 | ||
d07734e3 FF |
1332 | (*pp)--; |
1333 | read_type_number (pp, xtypenums); | |
1334 | type = *dbx_lookup_type (xtypenums); | |
f52bde21 JK |
1335 | if (typenums[0] == xtypenums[0] && typenums[1] == xtypenums[1]) |
1336 | /* It's being defined as itself. That means it is "void". */ | |
1337 | type = init_type (TYPE_CODE_VOID, 0, 0, NULL, objfile); | |
d07734e3 FF |
1338 | if (typenums[0] != -1) |
1339 | *dbx_lookup_type (typenums) = type; | |
1340 | break; | |
1341 | ||
1342 | /* In the following types, we must be sure to overwrite any existing | |
1343 | type that the typenums refer to, rather than allocating a new one | |
1344 | and making the typenums point to the new one. This is because there | |
1345 | may already be pointers to the existing type (if it had been | |
1346 | forward-referenced), and we must change it to a pointer, function, | |
1347 | reference, or whatever, *in-place*. */ | |
1348 | ||
1349 | case '*': | |
1350 | type1 = read_type (pp, objfile); | |
1351 | type = make_pointer_type (type1, dbx_lookup_type (typenums)); | |
1352 | break; | |
1353 | ||
1354 | case '&': /* Reference to another type */ | |
1355 | type1 = read_type (pp, objfile); | |
1356 | type = make_reference_type (type1, dbx_lookup_type (typenums)); | |
1357 | break; | |
1358 | ||
1359 | case 'f': /* Function returning another type */ | |
1360 | type1 = read_type (pp, objfile); | |
1361 | type = make_function_type (type1, dbx_lookup_type (typenums)); | |
1362 | break; | |
1363 | ||
1364 | case 'k': /* Const qualifier on some type (Sun) */ | |
1365 | type = read_type (pp, objfile); | |
1366 | /* FIXME! For now, we ignore const and volatile qualifiers. */ | |
1367 | break; | |
1368 | ||
1369 | case 'B': /* Volatile qual on some type (Sun) */ | |
1370 | type = read_type (pp, objfile); | |
1371 | /* FIXME! For now, we ignore const and volatile qualifiers. */ | |
1372 | break; | |
1373 | ||
1374 | /* FIXME -- we should be doing smash_to_XXX types here. */ | |
1375 | case '@': /* Member (class & variable) type */ | |
1376 | { | |
1377 | struct type *domain = read_type (pp, objfile); | |
1378 | struct type *memtype; | |
1379 | ||
1380 | if (**pp != ',') | |
1381 | /* Invalid member type data format. */ | |
1382 | return error_type (pp); | |
1383 | ++*pp; | |
1384 | ||
1385 | memtype = read_type (pp, objfile); | |
1386 | type = dbx_alloc_type (typenums, objfile); | |
1387 | smash_to_member_type (type, domain, memtype); | |
1388 | } | |
1389 | break; | |
1390 | ||
1391 | case '#': /* Method (class & fn) type */ | |
1392 | if ((*pp)[0] == '#') | |
1393 | { | |
2640f7e1 | 1394 | /* We'll get the parameter types from the name. */ |
d07734e3 FF |
1395 | struct type *return_type; |
1396 | ||
e7177cc2 | 1397 | (*pp)++; |
d07734e3 FF |
1398 | return_type = read_type (pp, objfile); |
1399 | if (*(*pp)++ != ';') | |
51b80b00 | 1400 | complain (&invalid_member_complaint, symnum); |
d07734e3 FF |
1401 | type = allocate_stub_method (return_type); |
1402 | if (typenums[0] != -1) | |
1403 | *dbx_lookup_type (typenums) = type; | |
1404 | } | |
1405 | else | |
1406 | { | |
1407 | struct type *domain = read_type (pp, objfile); | |
1408 | struct type *return_type; | |
1409 | struct type **args; | |
1410 | ||
1411 | if (*(*pp)++ != ',') | |
1412 | error ("invalid member type data format, at symtab pos %d.", | |
1413 | symnum); | |
1414 | ||
1415 | return_type = read_type (pp, objfile); | |
1416 | args = read_args (pp, ';', objfile); | |
1417 | type = dbx_alloc_type (typenums, objfile); | |
1418 | smash_to_method_type (type, domain, return_type, args); | |
1419 | } | |
1420 | break; | |
1421 | ||
1422 | case 'r': /* Range type */ | |
1423 | type = read_range_type (pp, typenums, objfile); | |
1424 | if (typenums[0] != -1) | |
1425 | *dbx_lookup_type (typenums) = type; | |
1426 | break; | |
1427 | ||
1428 | case 'b': /* Sun ACC builtin int type */ | |
1429 | type = read_sun_builtin_type (pp, typenums, objfile); | |
1430 | if (typenums[0] != -1) | |
1431 | *dbx_lookup_type (typenums) = type; | |
1432 | break; | |
1433 | ||
1434 | case 'R': /* Sun ACC builtin float type */ | |
1435 | type = read_sun_floating_type (pp, typenums, objfile); | |
1436 | if (typenums[0] != -1) | |
1437 | *dbx_lookup_type (typenums) = type; | |
1438 | break; | |
1439 | ||
1440 | case 'e': /* Enumeration type */ | |
1441 | type = dbx_alloc_type (typenums, objfile); | |
1442 | type = read_enum_type (pp, type, objfile); | |
1443 | *dbx_lookup_type (typenums) = type; | |
1444 | break; | |
1445 | ||
1446 | case 's': /* Struct type */ | |
d07734e3 FF |
1447 | case 'u': /* Union type */ |
1448 | type = dbx_alloc_type (typenums, objfile); | |
1449 | if (!TYPE_NAME (type)) | |
e7177cc2 FF |
1450 | { |
1451 | TYPE_NAME (type) = type_synonym_name; | |
1452 | } | |
1453 | type_synonym_name = NULL; | |
1454 | switch (type_descriptor) | |
1455 | { | |
1456 | case 's': | |
1457 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
1458 | break; | |
1459 | case 'u': | |
1460 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
1461 | break; | |
1462 | } | |
d07734e3 | 1463 | type = read_struct_type (pp, type, objfile); |
d07734e3 FF |
1464 | break; |
1465 | ||
1466 | case 'a': /* Array type */ | |
1467 | if (**pp != 'r') | |
1468 | return error_type (pp); | |
1469 | ++*pp; | |
1470 | ||
1471 | type = dbx_alloc_type (typenums, objfile); | |
1472 | type = read_array_type (pp, type, objfile); | |
1473 | break; | |
1474 | ||
1475 | default: | |
1476 | --*pp; /* Go back to the symbol in error */ | |
1477 | /* Particularly important if it was \0! */ | |
1478 | return error_type (pp); | |
1479 | } | |
1480 | ||
1481 | if (type == 0) | |
1482 | abort (); | |
1483 | ||
1484 | return type; | |
1485 | } | |
1486 | \f | |
dd469789 JG |
1487 | /* RS/6000 xlc/dbx combination uses a set of builtin types, starting from -1. |
1488 | Return the proper type node for a given builtin type number. */ | |
1489 | ||
1490 | static struct type * | |
a387370d | 1491 | rs6000_builtin_type (typenum) |
f52bde21 | 1492 | int typenum; |
dd469789 | 1493 | { |
f52bde21 JK |
1494 | /* We recognize types numbered from -NUMBER_RECOGNIZED to -1. */ |
1495 | #define NUMBER_RECOGNIZED 30 | |
1496 | /* This includes an empty slot for type number -0. */ | |
1497 | static struct type *negative_types[NUMBER_RECOGNIZED + 1]; | |
1498 | struct type *rettype; | |
1499 | ||
1500 | if (typenum >= 0 || typenum < -NUMBER_RECOGNIZED) | |
1501 | { | |
1502 | complain (&rs6000_builtin_complaint, typenum); | |
1503 | return builtin_type_error; | |
1504 | } | |
1505 | if (negative_types[-typenum] != NULL) | |
1506 | return negative_types[-typenum]; | |
1507 | ||
1508 | #if TARGET_CHAR_BIT != 8 | |
1509 | #error This code wrong for TARGET_CHAR_BIT not 8 | |
1510 | /* These definitions all assume that TARGET_CHAR_BIT is 8. I think | |
1511 | that if that ever becomes not true, the correct fix will be to | |
1512 | make the size in the struct type to be in bits, not in units of | |
1513 | TARGET_CHAR_BIT. */ | |
1514 | #endif | |
1515 | ||
1516 | switch (-typenum) | |
1517 | { | |
1518 | case 1: | |
1519 | /* The size of this and all the other types are fixed, defined | |
1520 | by the debugging format. If there is a type called "int" which | |
1521 | is other than 32 bits, then it should use a new negative type | |
1522 | number (or avoid negative type numbers for that case). | |
1523 | See stabs.texinfo. */ | |
1524 | rettype = init_type (TYPE_CODE_INT, 4, 0, "int", NULL); | |
1525 | break; | |
1526 | case 2: | |
1527 | rettype = init_type (TYPE_CODE_INT, 1, 0, "char", NULL); | |
1528 | break; | |
1529 | case 3: | |
1530 | rettype = init_type (TYPE_CODE_INT, 2, 0, "short", NULL); | |
1531 | break; | |
1532 | case 4: | |
1533 | rettype = init_type (TYPE_CODE_INT, 4, 0, "long", NULL); | |
1534 | break; | |
1535 | case 5: | |
1536 | rettype = init_type (TYPE_CODE_INT, 1, TYPE_FLAG_UNSIGNED, | |
1537 | "unsigned char", NULL); | |
1538 | break; | |
1539 | case 6: | |
1540 | rettype = init_type (TYPE_CODE_INT, 1, 0, "signed char", NULL); | |
1541 | break; | |
1542 | case 7: | |
1543 | rettype = init_type (TYPE_CODE_INT, 2, TYPE_FLAG_UNSIGNED, | |
1544 | "unsigned short", NULL); | |
1545 | break; | |
1546 | case 8: | |
1547 | rettype = init_type (TYPE_CODE_INT, 4, TYPE_FLAG_UNSIGNED, | |
1548 | "unsigned int", NULL); | |
1549 | break; | |
1550 | case 9: | |
1551 | rettype = init_type (TYPE_CODE_INT, 4, TYPE_FLAG_UNSIGNED, | |
1552 | "unsigned", NULL); | |
1553 | case 10: | |
1554 | rettype = init_type (TYPE_CODE_INT, 4, TYPE_FLAG_UNSIGNED, | |
1555 | "unsigned long", NULL); | |
1556 | break; | |
1557 | case 11: | |
1558 | rettype = init_type (TYPE_CODE_VOID, 0, 0, "void", NULL); | |
1559 | break; | |
1560 | case 12: | |
1561 | /* IEEE single precision (32 bit). */ | |
1562 | rettype = init_type (TYPE_CODE_FLT, 4, 0, "float", NULL); | |
1563 | break; | |
1564 | case 13: | |
1565 | /* IEEE double precision (64 bit). */ | |
1566 | rettype = init_type (TYPE_CODE_FLT, 8, 0, "double", NULL); | |
1567 | break; | |
1568 | case 14: | |
1569 | /* This is an IEEE double on the RS/6000, and different machines with | |
1570 | different sizes for "long double" should use different negative | |
1571 | type numbers. See stabs.texinfo. */ | |
1572 | rettype = init_type (TYPE_CODE_FLT, 8, 0, "long double", NULL); | |
1573 | break; | |
1574 | case 15: | |
1575 | rettype = init_type (TYPE_CODE_INT, 4, 0, "integer", NULL); | |
1576 | break; | |
1577 | case 16: | |
1578 | /* What is the proper size of this type? */ | |
1579 | rettype = init_type (TYPE_CODE_BOOL, 1, 0, "boolean", NULL); | |
1580 | break; | |
1581 | case 17: | |
1582 | rettype = init_type (TYPE_CODE_FLT, 4, 0, "short real", NULL); | |
1583 | break; | |
1584 | case 18: | |
1585 | rettype = init_type (TYPE_CODE_FLT, 8, 0, "real", NULL); | |
1586 | break; | |
1587 | case 19: | |
1588 | rettype = init_type (TYPE_CODE_ERROR, 0, 0, "stringptr", NULL); | |
1589 | break; | |
1590 | case 20: | |
1591 | rettype = init_type (TYPE_CODE_CHAR, 1, TYPE_FLAG_UNSIGNED, | |
1592 | "character", NULL); | |
1593 | break; | |
1594 | case 21: | |
1595 | rettype = init_type (TYPE_CODE_INT, 1, TYPE_FLAG_UNSIGNED, | |
1596 | "logical*1", NULL); | |
1597 | break; | |
1598 | case 22: | |
1599 | rettype = init_type (TYPE_CODE_INT, 2, TYPE_FLAG_UNSIGNED, | |
1600 | "logical*2", NULL); | |
1601 | break; | |
1602 | case 23: | |
1603 | rettype = init_type (TYPE_CODE_INT, 4, TYPE_FLAG_UNSIGNED, | |
1604 | "logical*4", NULL); | |
1605 | break; | |
1606 | case 24: | |
1607 | rettype = init_type (TYPE_CODE_INT, 4, TYPE_FLAG_UNSIGNED, | |
1608 | "logical", NULL); | |
1609 | break; | |
1610 | case 25: | |
1611 | /* Complex type consisting of two IEEE single precision values. */ | |
1612 | rettype = init_type (TYPE_CODE_ERROR, 8, 0, "complex", NULL); | |
1613 | break; | |
1614 | case 26: | |
1615 | /* Complex type consisting of two IEEE double precision values. */ | |
1616 | rettype = init_type (TYPE_CODE_ERROR, 16, 0, "double complex", NULL); | |
1617 | break; | |
1618 | case 27: | |
1619 | rettype = init_type (TYPE_CODE_INT, 1, 0, "integer*1", NULL); | |
1620 | break; | |
1621 | case 28: | |
1622 | rettype = init_type (TYPE_CODE_INT, 2, 0, "integer*2", NULL); | |
1623 | break; | |
1624 | case 29: | |
1625 | rettype = init_type (TYPE_CODE_INT, 4, 0, "integer*4", NULL); | |
1626 | break; | |
1627 | case 30: | |
1628 | rettype = init_type (TYPE_CODE_CHAR, 2, 0, "wchar", NULL); | |
1629 | break; | |
1630 | } | |
1631 | negative_types[-typenum] = rettype; | |
1632 | return rettype; | |
dd469789 JG |
1633 | } |
1634 | \f | |
d07734e3 FF |
1635 | /* This page contains subroutines of read_type. */ |
1636 | ||
e7177cc2 FF |
1637 | #define VISIBILITY_PRIVATE '0' /* Stabs character for private field */ |
1638 | #define VISIBILITY_PROTECTED '1' /* Stabs character for protected fld */ | |
1639 | #define VISIBILITY_PUBLIC '2' /* Stabs character for public field */ | |
d07734e3 | 1640 | |
e7177cc2 FF |
1641 | /* Read member function stabs info for C++ classes. The form of each member |
1642 | function data is: | |
1643 | ||
1644 | NAME :: TYPENUM[=type definition] ARGS : PHYSNAME ; | |
1645 | ||
1646 | An example with two member functions is: | |
1647 | ||
1648 | afunc1::20=##15;:i;2A.;afunc2::20:i;2A.; | |
1649 | ||
1650 | For the case of overloaded operators, the format is op$::*.funcs, where | |
1651 | $ is the CPLUS_MARKER (usually '$'), `*' holds the place for an operator | |
1652 | name (such as `+=') and `.' marks the end of the operator name. */ | |
1653 | ||
1654 | static int | |
1655 | read_member_functions (fip, pp, type, objfile) | |
1656 | struct field_info *fip; | |
d07734e3 | 1657 | char **pp; |
e7177cc2 | 1658 | struct type *type; |
d07734e3 FF |
1659 | struct objfile *objfile; |
1660 | { | |
e7177cc2 FF |
1661 | int nfn_fields = 0; |
1662 | int length = 0; | |
1663 | /* Total number of member functions defined in this class. If the class | |
1664 | defines two `f' functions, and one `g' function, then this will have | |
1665 | the value 3. */ | |
d07734e3 | 1666 | int total_length = 0; |
e7177cc2 | 1667 | int i; |
d07734e3 FF |
1668 | struct next_fnfield |
1669 | { | |
1670 | struct next_fnfield *next; | |
1671 | struct fn_field fn_field; | |
e7177cc2 FF |
1672 | } *sublist; |
1673 | struct type *look_ahead_type; | |
1674 | struct next_fnfieldlist *new_fnlist; | |
1675 | struct next_fnfield *new_sublist; | |
1676 | char *main_fn_name; | |
d07734e3 | 1677 | register char *p; |
e7177cc2 FF |
1678 | |
1679 | /* Process each list until we find something that is not a member function | |
1680 | or find the end of the functions. */ | |
d07734e3 | 1681 | |
e7177cc2 | 1682 | while (**pp != ';') |
d07734e3 | 1683 | { |
e7177cc2 FF |
1684 | /* We should be positioned at the start of the function name. |
1685 | Scan forward to find the first ':' and if it is not the | |
1686 | first of a "::" delimiter, then this is not a member function. */ | |
1687 | p = *pp; | |
1688 | while (*p != ':') | |
1689 | { | |
1690 | p++; | |
1691 | } | |
1692 | if (p[1] != ':') | |
1693 | { | |
1694 | break; | |
1695 | } | |
d07734e3 | 1696 | |
e7177cc2 FF |
1697 | sublist = NULL; |
1698 | look_ahead_type = NULL; | |
1699 | length = 0; | |
1700 | ||
1701 | new_fnlist = (struct next_fnfieldlist *) | |
1702 | xmalloc (sizeof (struct next_fnfieldlist)); | |
1703 | make_cleanup (free, new_fnlist); | |
1704 | memset (new_fnlist, 0, sizeof (struct next_fnfieldlist)); | |
1705 | ||
1706 | if ((*pp)[0] == 'o' && (*pp)[1] == 'p' && (*pp)[2] == CPLUS_MARKER) | |
d07734e3 | 1707 | { |
e7177cc2 FF |
1708 | /* This is a completely wierd case. In order to stuff in the |
1709 | names that might contain colons (the usual name delimiter), | |
1710 | Mike Tiemann defined a different name format which is | |
1711 | signalled if the identifier is "op$". In that case, the | |
1712 | format is "op$::XXXX." where XXXX is the name. This is | |
1713 | used for names like "+" or "=". YUUUUUUUK! FIXME! */ | |
1714 | /* This lets the user type "break operator+". | |
1715 | We could just put in "+" as the name, but that wouldn't | |
1716 | work for "*". */ | |
1717 | static char opname[32] = {'o', 'p', CPLUS_MARKER}; | |
1718 | char *o = opname + 3; | |
1719 | ||
1720 | /* Skip past '::'. */ | |
1721 | *pp = p + 2; | |
d07734e3 | 1722 | |
e7177cc2 FF |
1723 | STABS_CONTINUE (pp); |
1724 | p = *pp; | |
1725 | while (*p != '.') | |
d07734e3 | 1726 | { |
e7177cc2 FF |
1727 | *o++ = *p++; |
1728 | } | |
1729 | main_fn_name = savestring (opname, o - opname); | |
1730 | /* Skip past '.' */ | |
1731 | *pp = p + 1; | |
1732 | } | |
1733 | else | |
1734 | { | |
1735 | main_fn_name = savestring (*pp, p - *pp); | |
1736 | /* Skip past '::'. */ | |
1737 | *pp = p + 2; | |
1738 | } | |
1739 | new_fnlist -> fn_fieldlist.name = main_fn_name; | |
1740 | ||
1741 | do | |
1742 | { | |
1743 | new_sublist = | |
1744 | (struct next_fnfield *) xmalloc (sizeof (struct next_fnfield)); | |
1745 | make_cleanup (free, new_sublist); | |
1746 | memset (new_sublist, 0, sizeof (struct next_fnfield)); | |
1747 | ||
1748 | /* Check for and handle cretinous dbx symbol name continuation! */ | |
1749 | if (look_ahead_type == NULL) | |
1750 | { | |
1751 | /* Normal case. */ | |
1752 | STABS_CONTINUE (pp); | |
1753 | ||
1754 | new_sublist -> fn_field.type = read_type (pp, objfile); | |
1755 | if (**pp != ':') | |
1756 | { | |
1757 | /* Invalid symtab info for member function. */ | |
2a021f21 | 1758 | return 0; |
e7177cc2 FF |
1759 | } |
1760 | } | |
1761 | else | |
1762 | { | |
1763 | /* g++ version 1 kludge */ | |
1764 | new_sublist -> fn_field.type = look_ahead_type; | |
1765 | look_ahead_type = NULL; | |
1766 | } | |
1767 | ||
1768 | (*pp)++; | |
1769 | p = *pp; | |
1770 | while (*p != ';') | |
1771 | { | |
1772 | p++; | |
d07734e3 | 1773 | } |
e7177cc2 FF |
1774 | |
1775 | /* If this is just a stub, then we don't have the real name here. */ | |
d07734e3 | 1776 | |
e7177cc2 FF |
1777 | if (TYPE_FLAGS (new_sublist -> fn_field.type) & TYPE_FLAG_STUB) |
1778 | { | |
39cb3d04 PS |
1779 | if (!TYPE_DOMAIN_TYPE (new_sublist -> fn_field.type)) |
1780 | TYPE_DOMAIN_TYPE (new_sublist -> fn_field.type) = type; | |
e7177cc2 FF |
1781 | new_sublist -> fn_field.is_stub = 1; |
1782 | } | |
1783 | new_sublist -> fn_field.physname = savestring (*pp, p - *pp); | |
1784 | *pp = p + 1; | |
1785 | ||
1786 | /* Set this member function's visibility fields. */ | |
1787 | switch (*(*pp)++) | |
1788 | { | |
1789 | case VISIBILITY_PRIVATE: | |
1790 | new_sublist -> fn_field.is_private = 1; | |
1791 | break; | |
1792 | case VISIBILITY_PROTECTED: | |
1793 | new_sublist -> fn_field.is_protected = 1; | |
1794 | break; | |
1795 | } | |
1796 | ||
1797 | STABS_CONTINUE (pp); | |
d07734e3 FF |
1798 | switch (**pp) |
1799 | { | |
e7177cc2 FF |
1800 | case 'A': /* Normal functions. */ |
1801 | new_sublist -> fn_field.is_const = 0; | |
1802 | new_sublist -> fn_field.is_volatile = 0; | |
1803 | (*pp)++; | |
1804 | break; | |
1805 | case 'B': /* `const' member functions. */ | |
1806 | new_sublist -> fn_field.is_const = 1; | |
1807 | new_sublist -> fn_field.is_volatile = 0; | |
1808 | (*pp)++; | |
1809 | break; | |
1810 | case 'C': /* `volatile' member function. */ | |
1811 | new_sublist -> fn_field.is_const = 0; | |
1812 | new_sublist -> fn_field.is_volatile = 1; | |
1813 | (*pp)++; | |
1814 | break; | |
1815 | case 'D': /* `const volatile' member function. */ | |
1816 | new_sublist -> fn_field.is_const = 1; | |
1817 | new_sublist -> fn_field.is_volatile = 1; | |
1818 | (*pp)++; | |
1819 | break; | |
1820 | case '*': /* File compiled with g++ version 1 -- no info */ | |
1821 | case '?': | |
1822 | case '.': | |
1823 | break; | |
1824 | default: | |
51b80b00 | 1825 | complain (&const_vol_complaint, **pp); |
e7177cc2 | 1826 | break; |
d07734e3 | 1827 | } |
e7177cc2 FF |
1828 | |
1829 | switch (*(*pp)++) | |
1830 | { | |
1831 | case '*': | |
1832 | /* virtual member function, followed by index. | |
1833 | The sign bit is set to distinguish pointers-to-methods | |
1834 | from virtual function indicies. Since the array is | |
1835 | in words, the quantity must be shifted left by 1 | |
1836 | on 16 bit machine, and by 2 on 32 bit machine, forcing | |
1837 | the sign bit out, and usable as a valid index into | |
1838 | the array. Remove the sign bit here. */ | |
1839 | new_sublist -> fn_field.voffset = | |
1840 | (0x7fffffff & read_number (pp, ';')) + 2; | |
1841 | ||
1842 | STABS_CONTINUE (pp); | |
1843 | if (**pp == ';' || **pp == '\0') | |
1844 | { | |
1845 | /* Must be g++ version 1. */ | |
1846 | new_sublist -> fn_field.fcontext = 0; | |
1847 | } | |
1848 | else | |
1849 | { | |
1850 | /* Figure out from whence this virtual function came. | |
1851 | It may belong to virtual function table of | |
1852 | one of its baseclasses. */ | |
1853 | look_ahead_type = read_type (pp, objfile); | |
1854 | if (**pp == ':') | |
1855 | { | |
1856 | /* g++ version 1 overloaded methods. */ | |
1857 | } | |
1858 | else | |
1859 | { | |
1860 | new_sublist -> fn_field.fcontext = look_ahead_type; | |
1861 | if (**pp != ';') | |
1862 | { | |
2a021f21 | 1863 | return 0; |
e7177cc2 FF |
1864 | } |
1865 | else | |
1866 | { | |
1867 | ++*pp; | |
1868 | } | |
1869 | look_ahead_type = NULL; | |
1870 | } | |
1871 | } | |
1872 | break; | |
1873 | ||
1874 | case '?': | |
1875 | /* static member function. */ | |
1876 | new_sublist -> fn_field.voffset = VOFFSET_STATIC; | |
1877 | if (strncmp (new_sublist -> fn_field.physname, | |
1878 | main_fn_name, strlen (main_fn_name))) | |
1879 | { | |
1880 | new_sublist -> fn_field.is_stub = 1; | |
1881 | } | |
1882 | break; | |
1883 | ||
1884 | default: | |
1885 | /* error */ | |
51b80b00 | 1886 | complain (&member_fn_complaint, (*pp)[-1]); |
e7177cc2 FF |
1887 | /* Fall through into normal member function. */ |
1888 | ||
1889 | case '.': | |
1890 | /* normal member function. */ | |
1891 | new_sublist -> fn_field.voffset = 0; | |
1892 | new_sublist -> fn_field.fcontext = 0; | |
1893 | break; | |
1894 | } | |
1895 | ||
1896 | new_sublist -> next = sublist; | |
1897 | sublist = new_sublist; | |
1898 | length++; | |
1899 | STABS_CONTINUE (pp); | |
d07734e3 | 1900 | } |
e7177cc2 FF |
1901 | while (**pp != ';' && **pp != '\0'); |
1902 | ||
1903 | (*pp)++; | |
1904 | ||
1905 | new_fnlist -> fn_fieldlist.fn_fields = (struct fn_field *) | |
1906 | obstack_alloc (&objfile -> type_obstack, | |
1907 | sizeof (struct fn_field) * length); | |
1908 | memset (new_fnlist -> fn_fieldlist.fn_fields, 0, | |
1909 | sizeof (struct fn_field) * length); | |
1910 | for (i = length; (i--, sublist); sublist = sublist -> next) | |
1911 | { | |
1912 | new_fnlist -> fn_fieldlist.fn_fields[i] = sublist -> fn_field; | |
1913 | } | |
1914 | ||
1915 | new_fnlist -> fn_fieldlist.length = length; | |
1916 | new_fnlist -> next = fip -> fnlist; | |
1917 | fip -> fnlist = new_fnlist; | |
1918 | nfn_fields++; | |
1919 | total_length += length; | |
1920 | STABS_CONTINUE (pp); | |
d07734e3 FF |
1921 | } |
1922 | ||
e7177cc2 FF |
1923 | if (nfn_fields) |
1924 | { | |
1925 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
1926 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
1927 | TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * nfn_fields); | |
1928 | memset (TYPE_FN_FIELDLISTS (type), 0, | |
1929 | sizeof (struct fn_fieldlist) * nfn_fields); | |
1930 | TYPE_NFN_FIELDS (type) = nfn_fields; | |
1931 | TYPE_NFN_FIELDS_TOTAL (type) = total_length; | |
1932 | } | |
d07734e3 | 1933 | |
2a021f21 | 1934 | return 1; |
e7177cc2 | 1935 | } |
d07734e3 | 1936 | |
e7177cc2 FF |
1937 | /* Special GNU C++ name. |
1938 | FIXME: Still need to properly handle parse error conditions. */ | |
d07734e3 | 1939 | |
e7177cc2 FF |
1940 | static void |
1941 | read_cpp_abbrev (fip, pp, type, objfile) | |
1942 | struct field_info *fip; | |
1943 | char **pp; | |
1944 | struct type *type; | |
1945 | struct objfile *objfile; | |
1946 | { | |
1947 | register char *p; | |
1948 | const char *prefix; | |
1949 | char *name; | |
2a021f21 | 1950 | char cpp_abbrev; |
e7177cc2 | 1951 | struct type *context; |
d07734e3 | 1952 | |
e7177cc2 FF |
1953 | p = *pp; |
1954 | if (*++p == 'v') | |
d07734e3 | 1955 | { |
e7177cc2 | 1956 | name = NULL; |
2a021f21 JG |
1957 | cpp_abbrev = *++p; |
1958 | ||
d07734e3 FF |
1959 | *pp = p + 1; |
1960 | ||
e7177cc2 FF |
1961 | /* At this point, *pp points to something like "22:23=*22...", |
1962 | where the type number before the ':' is the "context" and | |
1963 | everything after is a regular type definition. Lookup the | |
1964 | type, find it's name, and construct the field name. */ | |
1965 | ||
1966 | context = read_type (pp, objfile); | |
2a021f21 JG |
1967 | |
1968 | switch (cpp_abbrev) | |
d07734e3 | 1969 | { |
2a021f21 JG |
1970 | case 'f': /* $vf -- a virtual function table pointer */ |
1971 | fip->list->field.name = | |
1972 | obconcat (&objfile->type_obstack, vptr_name, "", ""); | |
1973 | break; | |
1974 | ||
1975 | case 'b': /* $vb -- a virtual bsomethingorother */ | |
1976 | name = type_name_no_tag (context); | |
1977 | if (name == NULL) | |
1978 | { | |
1979 | complain (&invalid_cpp_type_complaint, symnum); | |
1980 | name = "FOO"; | |
1981 | } | |
1982 | fip->list->field.name = | |
1983 | obconcat (&objfile->type_obstack, vb_name, name, ""); | |
1984 | break; | |
1985 | ||
1986 | default: | |
1987 | complain (&invalid_cpp_abbrev_complaint, *pp); | |
1988 | fip->list->field.name = | |
1989 | obconcat (&objfile->type_obstack, | |
1990 | "INVALID_CPLUSPLUS_ABBREV", "", ""); | |
1991 | break; | |
e7177cc2 | 1992 | } |
d07734e3 | 1993 | |
e7177cc2 FF |
1994 | /* At this point, *pp points to the ':'. Skip it and read the |
1995 | field type. */ | |
d07734e3 | 1996 | |
e7177cc2 FF |
1997 | p = ++(*pp); |
1998 | if (p[-1] != ':') | |
1999 | { | |
2000 | complain (&invalid_cpp_abbrev_complaint, *pp); | |
2001 | } | |
2a021f21 | 2002 | fip->list->field.type = read_type (pp, objfile); |
d07734e3 | 2003 | (*pp)++; /* Skip the comma. */ |
2a021f21 | 2004 | fip->list->field.bitpos = read_number (pp, ';'); |
e7177cc2 | 2005 | /* This field is unpacked. */ |
2a021f21 JG |
2006 | fip->list->field.bitsize = 0; |
2007 | fip->list->visibility = VISIBILITY_PRIVATE; | |
e7177cc2 FF |
2008 | } |
2009 | else if (*p == '_') | |
2010 | { | |
2011 | /* GNU C++ anonymous type. */ | |
2012 | complain (&stabs_general_complaint, "g++ anonymous type $_ not handled"); | |
2013 | } | |
2014 | else | |
2015 | { | |
2016 | complain (&invalid_cpp_abbrev_complaint, *pp); | |
2017 | } | |
2018 | } | |
d07734e3 | 2019 | |
e7177cc2 FF |
2020 | static void |
2021 | read_one_struct_field (fip, pp, p, type, objfile) | |
2022 | struct field_info *fip; | |
2023 | char **pp; | |
2024 | char *p; | |
2025 | struct type *type; | |
2026 | struct objfile *objfile; | |
2027 | { | |
2028 | fip -> list -> field.name = | |
2029 | obsavestring (*pp, p - *pp, &objfile -> type_obstack); | |
2030 | *pp = p + 1; | |
2031 | ||
2032 | /* This means we have a visibility for a field coming. */ | |
2033 | if (**pp == '/') | |
2034 | { | |
2035 | (*pp)++; | |
2036 | fip -> list -> visibility = *(*pp)++; | |
2037 | switch (fip -> list -> visibility) | |
2038 | { | |
2039 | case VISIBILITY_PRIVATE: | |
2040 | case VISIBILITY_PROTECTED: | |
2041 | break; | |
2042 | ||
2043 | case VISIBILITY_PUBLIC: | |
2044 | /* Nothing to do */ | |
2045 | break; | |
2046 | ||
2047 | default: | |
2048 | /* Unknown visibility specifier. */ | |
2049 | complain (&stabs_general_complaint, | |
2050 | "unknown visibility specifier"); | |
2051 | return; | |
2052 | break; | |
2053 | } | |
2054 | } | |
2055 | else | |
2056 | { | |
2057 | /* normal dbx-style format, no explicit visibility */ | |
2058 | fip -> list -> visibility = VISIBILITY_PUBLIC; | |
2059 | } | |
2060 | ||
2061 | fip -> list -> field.type = read_type (pp, objfile); | |
2062 | if (**pp == ':') | |
2063 | { | |
2064 | p = ++(*pp); | |
d07734e3 | 2065 | #if 0 |
e7177cc2 FF |
2066 | /* Possible future hook for nested types. */ |
2067 | if (**pp == '!') | |
d07734e3 | 2068 | { |
e7177cc2 FF |
2069 | fip -> list -> field.bitpos = (long)-2; /* nested type */ |
2070 | p = ++(*pp); | |
d07734e3 FF |
2071 | } |
2072 | else | |
e7177cc2 FF |
2073 | #endif |
2074 | { | |
2075 | /* Static class member. */ | |
2076 | fip -> list -> field.bitpos = (long) -1; | |
2077 | } | |
2078 | while (*p != ';') | |
2079 | { | |
2080 | p++; | |
2081 | } | |
2082 | fip -> list -> field.bitsize = (long) savestring (*pp, p - *pp); | |
2083 | *pp = p + 1; | |
2084 | return; | |
2085 | } | |
2086 | else if (**pp != ',') | |
2087 | { | |
2088 | /* Bad structure-type format. */ | |
2089 | complain (&stabs_general_complaint, "bad structure-type format"); | |
2090 | return; | |
2091 | } | |
2092 | ||
2093 | (*pp)++; /* Skip the comma. */ | |
2094 | fip -> list -> field.bitpos = read_number (pp, ','); | |
2095 | fip -> list -> field.bitsize = read_number (pp, ';'); | |
2096 | ||
2097 | #if 0 | |
2098 | /* FIXME-tiemann: Can't the compiler put out something which | |
2099 | lets us distinguish these? (or maybe just not put out anything | |
2100 | for the field). What is the story here? What does the compiler | |
2101 | really do? Also, patch gdb.texinfo for this case; I document | |
2102 | it as a possible problem there. Search for "DBX-style". */ | |
2103 | ||
2104 | /* This is wrong because this is identical to the symbols | |
2105 | produced for GCC 0-size arrays. For example: | |
2106 | typedef union { | |
2107 | int num; | |
2108 | char str[0]; | |
2109 | } foo; | |
2110 | The code which dumped core in such circumstances should be | |
2111 | fixed not to dump core. */ | |
2112 | ||
2113 | /* g++ -g0 can put out bitpos & bitsize zero for a static | |
2114 | field. This does not give us any way of getting its | |
2115 | class, so we can't know its name. But we can just | |
2116 | ignore the field so we don't dump core and other nasty | |
2117 | stuff. */ | |
2118 | if (fip -> list -> field.bitpos == 0 && fip -> list -> field.bitsize == 0) | |
2119 | { | |
51b80b00 | 2120 | complain (&dbx_class_complaint); |
e7177cc2 FF |
2121 | /* Ignore this field. */ |
2122 | fip -> list = fip -> list -> next; | |
2123 | } | |
2124 | else | |
d07734e3 | 2125 | #endif /* 0 */ |
e7177cc2 FF |
2126 | { |
2127 | /* Detect an unpacked field and mark it as such. | |
2128 | dbx gives a bit size for all fields. | |
2129 | Note that forward refs cannot be packed, | |
2130 | and treat enums as if they had the width of ints. */ | |
2131 | ||
2132 | if (TYPE_CODE (fip -> list -> field.type) != TYPE_CODE_INT | |
2133 | && TYPE_CODE (fip -> list -> field.type) != TYPE_CODE_ENUM) | |
d07734e3 | 2134 | { |
e7177cc2 FF |
2135 | fip -> list -> field.bitsize = 0; |
2136 | } | |
2137 | if ((fip -> list -> field.bitsize | |
f52bde21 | 2138 | == TARGET_CHAR_BIT * TYPE_LENGTH (fip -> list -> field.type) |
e7177cc2 FF |
2139 | || (TYPE_CODE (fip -> list -> field.type) == TYPE_CODE_ENUM |
2140 | && (fip -> list -> field.bitsize | |
f52bde21 | 2141 | == TARGET_INT_BIT) |
d07734e3 | 2142 | ) |
e7177cc2 FF |
2143 | ) |
2144 | && | |
2145 | fip -> list -> field.bitpos % 8 == 0) | |
2146 | { | |
2147 | fip -> list -> field.bitsize = 0; | |
d07734e3 FF |
2148 | } |
2149 | } | |
e7177cc2 | 2150 | } |
d07734e3 | 2151 | |
d07734e3 | 2152 | |
e7177cc2 | 2153 | /* Read struct or class data fields. They have the form: |
d07734e3 | 2154 | |
e7177cc2 | 2155 | NAME : [VISIBILITY] TYPENUM , BITPOS , BITSIZE ; |
d07734e3 | 2156 | |
e7177cc2 FF |
2157 | At the end, we see a semicolon instead of a field. |
2158 | ||
2159 | In C++, this may wind up being NAME:?TYPENUM:PHYSNAME; for | |
2160 | a static field. | |
2161 | ||
2162 | The optional VISIBILITY is one of: | |
2163 | ||
2164 | '/0' (VISIBILITY_PRIVATE) | |
2165 | '/1' (VISIBILITY_PROTECTED) | |
2166 | '/2' (VISIBILITY_PUBLIC) | |
2167 | ||
2168 | or nothing, for C style fields with public visibility. */ | |
2169 | ||
2170 | static int | |
2171 | read_struct_fields (fip, pp, type, objfile) | |
2172 | struct field_info *fip; | |
2173 | char **pp; | |
2174 | struct type *type; | |
2175 | struct objfile *objfile; | |
2176 | { | |
2177 | register char *p; | |
2178 | struct nextfield *new; | |
2179 | ||
2180 | /* We better set p right now, in case there are no fields at all... */ | |
2181 | ||
2182 | p = *pp; | |
2183 | ||
2184 | /* Read each data member type until we find the terminating ';' at the end of | |
2185 | the data member list, or break for some other reason such as finding the | |
2186 | start of the member function list. */ | |
2187 | ||
2188 | while (**pp != ';') | |
d07734e3 | 2189 | { |
e7177cc2 FF |
2190 | STABS_CONTINUE (pp); |
2191 | /* Get space to record the next field's data. */ | |
2192 | new = (struct nextfield *) xmalloc (sizeof (struct nextfield)); | |
2193 | make_cleanup (free, new); | |
2194 | memset (new, 0, sizeof (struct nextfield)); | |
2195 | new -> next = fip -> list; | |
2196 | fip -> list = new; | |
d07734e3 | 2197 | |
e7177cc2 FF |
2198 | /* Get the field name. */ |
2199 | p = *pp; | |
2200 | if (*p == CPLUS_MARKER) | |
2201 | { | |
2202 | read_cpp_abbrev (fip, pp, type, objfile); | |
2203 | continue; | |
2204 | } | |
d07734e3 | 2205 | |
e7177cc2 FF |
2206 | /* Look for the ':' that separates the field name from the field |
2207 | values. Data members are delimited by a single ':', while member | |
2208 | functions are delimited by a pair of ':'s. When we hit the member | |
2209 | functions (if any), terminate scan loop and return. */ | |
d07734e3 | 2210 | |
e7177cc2 FF |
2211 | while (*p != ':') |
2212 | { | |
2213 | p++; | |
2214 | } | |
d07734e3 | 2215 | |
e7177cc2 FF |
2216 | /* Check to see if we have hit the member functions yet. */ |
2217 | if (p[1] == ':') | |
2218 | { | |
2219 | break; | |
2220 | } | |
2221 | read_one_struct_field (fip, pp, p, type, objfile); | |
2222 | } | |
2223 | if (p[1] == ':') | |
d07734e3 | 2224 | { |
e7177cc2 FF |
2225 | /* chill the list of fields: the last entry (at the head) is a |
2226 | partially constructed entry which we now scrub. */ | |
2227 | fip -> list = fip -> list -> next; | |
d07734e3 | 2228 | } |
2a021f21 | 2229 | return 1; |
e7177cc2 | 2230 | } |
d07734e3 | 2231 | |
e7177cc2 FF |
2232 | /* The stabs for C++ derived classes contain baseclass information which |
2233 | is marked by a '!' character after the total size. This function is | |
2234 | called when we encounter the baseclass marker, and slurps up all the | |
2235 | baseclass information. | |
2236 | ||
2237 | Immediately following the '!' marker is the number of base classes that | |
2238 | the class is derived from, followed by information for each base class. | |
2239 | For each base class, there are two visibility specifiers, a bit offset | |
2240 | to the base class information within the derived class, a reference to | |
2241 | the type for the base class, and a terminating semicolon. | |
2242 | ||
2243 | A typical example, with two base classes, would be "!2,020,19;0264,21;". | |
2244 | ^^ ^ ^ ^ ^ ^ ^ | |
2245 | Baseclass information marker __________________|| | | | | | | | |
2246 | Number of baseclasses __________________________| | | | | | | | |
2247 | Visibility specifiers (2) ________________________| | | | | | | |
2248 | Offset in bits from start of class _________________| | | | | | |
2249 | Type number for base class ___________________________| | | | | |
2250 | Visibility specifiers (2) _______________________________| | | | |
2251 | Offset in bits from start of class ________________________| | | |
2252 | Type number of base class ____________________________________| | |
2253 | */ | |
2254 | ||
2255 | static int | |
2256 | read_baseclasses (fip, pp, type, objfile) | |
2257 | struct field_info *fip; | |
2258 | char **pp; | |
2259 | struct type *type; | |
2260 | struct objfile *objfile; | |
2261 | { | |
2262 | int i; | |
2263 | struct nextfield *new; | |
d07734e3 | 2264 | |
e7177cc2 FF |
2265 | if (**pp != '!') |
2266 | { | |
2a021f21 | 2267 | return 1; |
e7177cc2 FF |
2268 | } |
2269 | else | |
d07734e3 | 2270 | { |
e7177cc2 FF |
2271 | /* Skip the '!' baseclass information marker. */ |
2272 | (*pp)++; | |
2273 | } | |
d07734e3 | 2274 | |
e7177cc2 FF |
2275 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
2276 | TYPE_N_BASECLASSES (type) = read_number (pp, ','); | |
d07734e3 | 2277 | |
e7177cc2 FF |
2278 | #if 0 |
2279 | /* Some stupid compilers have trouble with the following, so break | |
2280 | it up into simpler expressions. */ | |
2281 | TYPE_FIELD_VIRTUAL_BITS (type) = (B_TYPE *) | |
2282 | TYPE_ALLOC (type, B_BYTES (TYPE_N_BASECLASSES (type))); | |
2283 | #else | |
2284 | { | |
2285 | int num_bytes = B_BYTES (TYPE_N_BASECLASSES (type)); | |
2286 | char *pointer; | |
d07734e3 | 2287 | |
e7177cc2 FF |
2288 | pointer = (char *) TYPE_ALLOC (type, num_bytes); |
2289 | TYPE_FIELD_VIRTUAL_BITS (type) = (B_TYPE *) pointer; | |
2290 | } | |
2291 | #endif /* 0 */ | |
d07734e3 | 2292 | |
e7177cc2 | 2293 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), TYPE_N_BASECLASSES (type)); |
d07734e3 | 2294 | |
e7177cc2 FF |
2295 | for (i = 0; i < TYPE_N_BASECLASSES (type); i++) |
2296 | { | |
2297 | new = (struct nextfield *) xmalloc (sizeof (struct nextfield)); | |
2298 | make_cleanup (free, new); | |
2299 | memset (new, 0, sizeof (struct nextfield)); | |
2300 | new -> next = fip -> list; | |
2301 | fip -> list = new; | |
2302 | new -> field.bitsize = 0; /* this should be an unpacked field! */ | |
d07734e3 | 2303 | |
e7177cc2 FF |
2304 | STABS_CONTINUE (pp); |
2305 | switch (*(*pp)++) | |
2306 | { | |
2307 | case '0': | |
2308 | /* Nothing to do. */ | |
2309 | break; | |
2310 | case '1': | |
2311 | SET_TYPE_FIELD_VIRTUAL (type, i); | |
2312 | break; | |
2313 | default: | |
2314 | /* Bad visibility format. */ | |
2a021f21 | 2315 | return 0; |
e7177cc2 | 2316 | } |
d07734e3 | 2317 | |
e7177cc2 FF |
2318 | new -> visibility = *(*pp)++; |
2319 | switch (new -> visibility) | |
2320 | { | |
2321 | case VISIBILITY_PRIVATE: | |
2322 | case VISIBILITY_PROTECTED: | |
2323 | case VISIBILITY_PUBLIC: | |
2324 | break; | |
2325 | default: | |
2326 | /* Bad visibility format. */ | |
2a021f21 | 2327 | return 0; |
e7177cc2 | 2328 | } |
d07734e3 | 2329 | |
e7177cc2 FF |
2330 | /* The remaining value is the bit offset of the portion of the object |
2331 | corresponding to this baseclass. Always zero in the absence of | |
2332 | multiple inheritance. */ | |
d07734e3 | 2333 | |
e7177cc2 | 2334 | new -> field.bitpos = read_number (pp, ','); |
d07734e3 | 2335 | |
e7177cc2 FF |
2336 | /* The last piece of baseclass information is the type of the base |
2337 | class. Read it, and remember it's type name as this field's name. */ | |
d07734e3 | 2338 | |
e7177cc2 FF |
2339 | new -> field.type = read_type (pp, objfile); |
2340 | new -> field.name = type_name_no_tag (new -> field.type); | |
d07734e3 | 2341 | |
e7177cc2 FF |
2342 | /* skip trailing ';' and bump count of number of fields seen */ |
2343 | (*pp)++; | |
d07734e3 | 2344 | } |
2a021f21 | 2345 | return 1; |
e7177cc2 | 2346 | } |
d07734e3 | 2347 | |
2a021f21 JG |
2348 | /* The tail end of stabs for C++ classes that contain a virtual function |
2349 | pointer contains a tilde, a %, and a type number. | |
2350 | The type number refers to the base class (possibly this class itself) which | |
2351 | contains the vtable pointer for the current class. | |
2352 | ||
2353 | This function is called when we have parsed all the method declarations, | |
2354 | so we can look for the vptr base class info. */ | |
2355 | ||
e7177cc2 FF |
2356 | static int |
2357 | read_tilde_fields (fip, pp, type, objfile) | |
2358 | struct field_info *fip; | |
2359 | char **pp; | |
2360 | struct type *type; | |
2361 | struct objfile *objfile; | |
2362 | { | |
2363 | register char *p; | |
d07734e3 | 2364 | |
e7177cc2 | 2365 | STABS_CONTINUE (pp); |
d07734e3 | 2366 | |
e7177cc2 FF |
2367 | /* If we are positioned at a ';', then skip it. */ |
2368 | if (**pp == ';') | |
d07734e3 | 2369 | { |
e7177cc2 | 2370 | (*pp)++; |
d07734e3 FF |
2371 | } |
2372 | ||
d07734e3 FF |
2373 | if (**pp == '~') |
2374 | { | |
e7177cc2 | 2375 | (*pp)++; |
d07734e3 FF |
2376 | |
2377 | if (**pp == '=' || **pp == '+' || **pp == '-') | |
2378 | { | |
2379 | /* Obsolete flags that used to indicate the presence | |
2380 | of constructors and/or destructors. */ | |
e7177cc2 | 2381 | (*pp)++; |
d07734e3 FF |
2382 | } |
2383 | ||
2384 | /* Read either a '%' or the final ';'. */ | |
2385 | if (*(*pp)++ == '%') | |
2386 | { | |
2a021f21 JG |
2387 | /* The next number is the type number of the base class |
2388 | (possibly our own class) which supplies the vtable for | |
2389 | this class. Parse it out, and search that class to find | |
2390 | its vtable pointer, and install those into TYPE_VPTR_BASETYPE | |
2391 | and TYPE_VPTR_FIELDNO. */ | |
d07734e3 FF |
2392 | |
2393 | struct type *t; | |
2394 | int i; | |
2395 | ||
d07734e3 FF |
2396 | t = read_type (pp, objfile); |
2397 | p = (*pp)++; | |
2398 | while (*p != '\0' && *p != ';') | |
e7177cc2 FF |
2399 | { |
2400 | p++; | |
2401 | } | |
d07734e3 | 2402 | if (*p == '\0') |
e7177cc2 FF |
2403 | { |
2404 | /* Premature end of symbol. */ | |
2a021f21 | 2405 | return 0; |
e7177cc2 | 2406 | } |
d07734e3 FF |
2407 | |
2408 | TYPE_VPTR_BASETYPE (type) = t; | |
2a021f21 | 2409 | if (type == t) /* Our own class provides vtbl ptr */ |
d07734e3 | 2410 | { |
2a021f21 JG |
2411 | for (i = TYPE_NFIELDS (t) - 1; |
2412 | i >= TYPE_N_BASECLASSES (t); | |
2413 | --i) | |
d07734e3 | 2414 | { |
2a021f21 JG |
2415 | if (! strncmp (TYPE_FIELD_NAME (t, i), vptr_name, |
2416 | sizeof (vptr_name) - 1)) | |
e7177cc2 | 2417 | { |
2a021f21 JG |
2418 | TYPE_VPTR_FIELDNO (type) = i; |
2419 | goto gotit; | |
e7177cc2 FF |
2420 | } |
2421 | } | |
2a021f21 | 2422 | /* Virtual function table field not found. */ |
b646b438 | 2423 | complain (&vtbl_notfound_complaint, TYPE_NAME (type)); |
2a021f21 | 2424 | return 0; |
d07734e3 FF |
2425 | } |
2426 | else | |
e7177cc2 FF |
2427 | { |
2428 | TYPE_VPTR_FIELDNO (type) = TYPE_VPTR_FIELDNO (t); | |
2429 | } | |
d07734e3 | 2430 | |
2a021f21 | 2431 | gotit: |
d07734e3 FF |
2432 | *pp = p + 1; |
2433 | } | |
2434 | } | |
2a021f21 | 2435 | return 1; |
e7177cc2 | 2436 | } |
d07734e3 | 2437 | |
e7177cc2 FF |
2438 | static int |
2439 | attach_fn_fields_to_type (fip, type) | |
2440 | struct field_info *fip; | |
2441 | register struct type *type; | |
2442 | { | |
2443 | register int n; | |
2444 | ||
2445 | for (n = 0; n < TYPE_N_BASECLASSES (type); n++) | |
2446 | { | |
2447 | if (TYPE_CODE (TYPE_BASECLASS (type, n)) == TYPE_CODE_UNDEF) | |
2448 | { | |
2449 | /* @@ Memory leak on objfile -> type_obstack? */ | |
2a021f21 | 2450 | return 0; |
e7177cc2 FF |
2451 | } |
2452 | TYPE_NFN_FIELDS_TOTAL (type) += | |
2453 | TYPE_NFN_FIELDS_TOTAL (TYPE_BASECLASS (type, n)); | |
2454 | } | |
2455 | ||
2456 | for (n = TYPE_NFN_FIELDS (type); | |
2457 | fip -> fnlist != NULL; | |
2458 | fip -> fnlist = fip -> fnlist -> next) | |
2459 | { | |
2460 | --n; /* Circumvent Sun3 compiler bug */ | |
2461 | TYPE_FN_FIELDLISTS (type)[n] = fip -> fnlist -> fn_fieldlist; | |
2462 | } | |
2a021f21 | 2463 | return 1; |
e7177cc2 FF |
2464 | } |
2465 | ||
2466 | /* Create the vector of fields, and record how big it is. | |
2467 | We need this info to record proper virtual function table information | |
2468 | for this class's virtual functions. */ | |
2469 | ||
2470 | static int | |
2471 | attach_fields_to_type (fip, type, objfile) | |
2472 | struct field_info *fip; | |
2473 | register struct type *type; | |
2474 | struct objfile *objfile; | |
2475 | { | |
2476 | register int nfields = 0; | |
2477 | register int non_public_fields = 0; | |
2478 | register struct nextfield *scan; | |
2479 | ||
2480 | /* Count up the number of fields that we have, as well as taking note of | |
2481 | whether or not there are any non-public fields, which requires us to | |
2482 | allocate and build the private_field_bits and protected_field_bits | |
2483 | bitfields. */ | |
2484 | ||
2485 | for (scan = fip -> list; scan != NULL; scan = scan -> next) | |
2486 | { | |
2487 | nfields++; | |
2488 | if (scan -> visibility != VISIBILITY_PUBLIC) | |
2489 | { | |
2490 | non_public_fields++; | |
2491 | } | |
2492 | } | |
2493 | ||
2494 | /* Now we know how many fields there are, and whether or not there are any | |
2495 | non-public fields. Record the field count, allocate space for the | |
2496 | array of fields, and create blank visibility bitfields if necessary. */ | |
2497 | ||
2498 | TYPE_NFIELDS (type) = nfields; | |
2499 | TYPE_FIELDS (type) = (struct field *) | |
2500 | TYPE_ALLOC (type, sizeof (struct field) * nfields); | |
2501 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields); | |
2502 | ||
2503 | if (non_public_fields) | |
2504 | { | |
2505 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
2506 | ||
2507 | TYPE_FIELD_PRIVATE_BITS (type) = | |
2508 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
2509 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
2510 | ||
2511 | TYPE_FIELD_PROTECTED_BITS (type) = | |
2512 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
2513 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
2514 | } | |
2515 | ||
2516 | /* Copy the saved-up fields into the field vector. Start from the head | |
2517 | of the list, adding to the tail of the field array, so that they end | |
2518 | up in the same order in the array in which they were added to the list. */ | |
2519 | ||
2520 | while (nfields-- > 0) | |
2521 | { | |
2522 | TYPE_FIELD (type, nfields) = fip -> list -> field; | |
2523 | switch (fip -> list -> visibility) | |
2524 | { | |
2525 | case VISIBILITY_PRIVATE: | |
2526 | SET_TYPE_FIELD_PRIVATE (type, nfields); | |
2527 | break; | |
2528 | ||
2529 | case VISIBILITY_PROTECTED: | |
2530 | SET_TYPE_FIELD_PROTECTED (type, nfields); | |
2531 | break; | |
2532 | ||
2533 | case VISIBILITY_PUBLIC: | |
2534 | break; | |
2535 | ||
2536 | default: | |
2537 | /* Should warn about this unknown visibility? */ | |
2538 | break; | |
2539 | } | |
2540 | fip -> list = fip -> list -> next; | |
2541 | } | |
2a021f21 | 2542 | return 1; |
e7177cc2 FF |
2543 | } |
2544 | ||
2545 | /* Read the description of a structure (or union type) and return an object | |
2546 | describing the type. | |
2547 | ||
2548 | PP points to a character pointer that points to the next unconsumed token | |
2549 | in the the stabs string. For example, given stabs "A:T4=s4a:1,0,32;;", | |
2550 | *PP will point to "4a:1,0,32;;". | |
2551 | ||
2552 | TYPE points to an incomplete type that needs to be filled in. | |
2553 | ||
2554 | OBJFILE points to the current objfile from which the stabs information is | |
2555 | being read. (Note that it is redundant in that TYPE also contains a pointer | |
2556 | to this same objfile, so it might be a good idea to eliminate it. FIXME). | |
2557 | */ | |
2558 | ||
2559 | static struct type * | |
2560 | read_struct_type (pp, type, objfile) | |
2561 | char **pp; | |
2562 | struct type *type; | |
2563 | struct objfile *objfile; | |
2564 | { | |
2565 | struct cleanup *back_to; | |
2566 | struct field_info fi; | |
2567 | ||
2568 | fi.list = NULL; | |
2569 | fi.fnlist = NULL; | |
2570 | ||
2571 | back_to = make_cleanup (null_cleanup, 0); | |
2572 | ||
2573 | INIT_CPLUS_SPECIFIC (type); | |
2574 | TYPE_FLAGS (type) &= ~TYPE_FLAG_STUB; | |
2575 | ||
2576 | /* First comes the total size in bytes. */ | |
2577 | ||
2578 | TYPE_LENGTH (type) = read_number (pp, 0); | |
2579 | ||
2580 | /* Now read the baseclasses, if any, read the regular C struct or C++ | |
2581 | class member fields, attach the fields to the type, read the C++ | |
2582 | member functions, attach them to the type, and then read any tilde | |
dd469789 JG |
2583 | field (baseclass specifier for the class holding the main vtable). */ |
2584 | ||
8a177da6 PB |
2585 | if (!read_baseclasses (&fi, pp, type, objfile) |
2586 | || !read_struct_fields (&fi, pp, type, objfile) | |
2587 | || !attach_fields_to_type (&fi, type, objfile) | |
2588 | || !read_member_functions (&fi, pp, type, objfile) | |
2589 | || !attach_fn_fields_to_type (&fi, type) | |
2590 | || !read_tilde_fields (&fi, pp, type, objfile)) | |
e7177cc2 FF |
2591 | { |
2592 | do_cleanups (back_to); | |
2593 | return (error_type (pp)); | |
2594 | } | |
2595 | ||
2596 | do_cleanups (back_to); | |
2597 | return (type); | |
d07734e3 FF |
2598 | } |
2599 | ||
2600 | /* Read a definition of an array type, | |
2601 | and create and return a suitable type object. | |
2602 | Also creates a range type which represents the bounds of that | |
2603 | array. */ | |
2604 | ||
2605 | static struct type * | |
2606 | read_array_type (pp, type, objfile) | |
2607 | register char **pp; | |
2608 | register struct type *type; | |
2609 | struct objfile *objfile; | |
2610 | { | |
2611 | struct type *index_type, *element_type, *range_type; | |
2612 | int lower, upper; | |
2613 | int adjustable = 0; | |
2614 | ||
2615 | /* Format of an array type: | |
2616 | "ar<index type>;lower;upper;<array_contents_type>". Put code in | |
2617 | to handle this. | |
2618 | ||
2619 | Fortran adjustable arrays use Adigits or Tdigits for lower or upper; | |
2620 | for these, produce a type like float[][]. */ | |
2621 | ||
2622 | index_type = read_type (pp, objfile); | |
2623 | if (**pp != ';') | |
2624 | /* Improper format of array type decl. */ | |
2625 | return error_type (pp); | |
2626 | ++*pp; | |
2627 | ||
2628 | if (!(**pp >= '0' && **pp <= '9')) | |
2629 | { | |
e7177cc2 | 2630 | (*pp)++; |
d07734e3 FF |
2631 | adjustable = 1; |
2632 | } | |
2633 | lower = read_number (pp, ';'); | |
2634 | ||
2635 | if (!(**pp >= '0' && **pp <= '9')) | |
2636 | { | |
e7177cc2 | 2637 | (*pp)++; |
d07734e3 FF |
2638 | adjustable = 1; |
2639 | } | |
2640 | upper = read_number (pp, ';'); | |
2641 | ||
2642 | element_type = read_type (pp, objfile); | |
2643 | ||
2644 | if (adjustable) | |
2645 | { | |
2646 | lower = 0; | |
2647 | upper = -1; | |
2648 | } | |
2649 | ||
a8a69e63 FF |
2650 | range_type = |
2651 | create_range_type ((struct type *) NULL, index_type, lower, upper); | |
2652 | type = create_array_type (type, element_type, range_type); | |
d07734e3 FF |
2653 | |
2654 | /* If we have an array whose element type is not yet known, but whose | |
2655 | bounds *are* known, record it to be adjusted at the end of the file. */ | |
85f0a848 | 2656 | |
d07734e3 | 2657 | if (TYPE_LENGTH (element_type) == 0 && !adjustable) |
85f0a848 FF |
2658 | { |
2659 | add_undefined_type (type); | |
2660 | } | |
d07734e3 FF |
2661 | |
2662 | return type; | |
2663 | } | |
2664 | ||
2665 | ||
2666 | /* Read a definition of an enumeration type, | |
2667 | and create and return a suitable type object. | |
2668 | Also defines the symbols that represent the values of the type. */ | |
2669 | ||
2670 | static struct type * | |
2671 | read_enum_type (pp, type, objfile) | |
2672 | register char **pp; | |
2673 | register struct type *type; | |
2674 | struct objfile *objfile; | |
2675 | { | |
2676 | register char *p; | |
2677 | char *name; | |
2678 | register long n; | |
2679 | register struct symbol *sym; | |
2680 | int nsyms = 0; | |
2681 | struct pending **symlist; | |
2682 | struct pending *osyms, *syms; | |
2683 | int o_nsyms; | |
2684 | ||
2685 | #if 0 | |
2686 | /* FIXME! The stabs produced by Sun CC merrily define things that ought | |
2687 | to be file-scope, between N_FN entries, using N_LSYM. What's a mother | |
2688 | to do? For now, force all enum values to file scope. */ | |
2689 | if (within_function) | |
2690 | symlist = &local_symbols; | |
2691 | else | |
2692 | #endif | |
2693 | symlist = &file_symbols; | |
2694 | osyms = *symlist; | |
2695 | o_nsyms = osyms ? osyms->nsyms : 0; | |
2696 | ||
2697 | /* Read the value-names and their values. | |
2698 | The input syntax is NAME:VALUE,NAME:VALUE, and so on. | |
2699 | A semicolon or comma instead of a NAME means the end. */ | |
2700 | while (**pp && **pp != ';' && **pp != ',') | |
2701 | { | |
e7177cc2 | 2702 | STABS_CONTINUE (pp); |
d07734e3 FF |
2703 | p = *pp; |
2704 | while (*p != ':') p++; | |
2705 | name = obsavestring (*pp, p - *pp, &objfile -> symbol_obstack); | |
2706 | *pp = p + 1; | |
2707 | n = read_number (pp, ','); | |
2708 | ||
c02a37ea FF |
2709 | sym = (struct symbol *) |
2710 | obstack_alloc (&objfile -> symbol_obstack, sizeof (struct symbol)); | |
d07734e3 FF |
2711 | memset (sym, 0, sizeof (struct symbol)); |
2712 | SYMBOL_NAME (sym) = name; | |
2e4964ad | 2713 | SYMBOL_LANGUAGE (sym) = current_subfile -> language; |
d07734e3 FF |
2714 | SYMBOL_CLASS (sym) = LOC_CONST; |
2715 | SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; | |
2716 | SYMBOL_VALUE (sym) = n; | |
2717 | add_symbol_to_list (sym, symlist); | |
2718 | nsyms++; | |
2719 | } | |
2720 | ||
2721 | if (**pp == ';') | |
2722 | (*pp)++; /* Skip the semicolon. */ | |
2723 | ||
2724 | /* Now fill in the fields of the type-structure. */ | |
2725 | ||
2726 | TYPE_LENGTH (type) = sizeof (int); | |
2727 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
2728 | TYPE_FLAGS (type) &= ~TYPE_FLAG_STUB; | |
2729 | TYPE_NFIELDS (type) = nsyms; | |
2730 | TYPE_FIELDS (type) = (struct field *) | |
dac9734e | 2731 | TYPE_ALLOC (type, sizeof (struct field) * nsyms); |
c02a37ea | 2732 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nsyms); |
d07734e3 FF |
2733 | |
2734 | /* Find the symbols for the values and put them into the type. | |
2735 | The symbols can be found in the symlist that we put them on | |
2736 | to cause them to be defined. osyms contains the old value | |
2737 | of that symlist; everything up to there was defined by us. */ | |
2738 | /* Note that we preserve the order of the enum constants, so | |
2739 | that in something like "enum {FOO, LAST_THING=FOO}" we print | |
2740 | FOO, not LAST_THING. */ | |
2741 | ||
2742 | for (syms = *symlist, n = 0; syms; syms = syms->next) | |
2743 | { | |
2744 | int j = 0; | |
2745 | if (syms == osyms) | |
2746 | j = o_nsyms; | |
2747 | for (; j < syms->nsyms; j++,n++) | |
2748 | { | |
2749 | struct symbol *xsym = syms->symbol[j]; | |
2750 | SYMBOL_TYPE (xsym) = type; | |
2751 | TYPE_FIELD_NAME (type, n) = SYMBOL_NAME (xsym); | |
2752 | TYPE_FIELD_VALUE (type, n) = 0; | |
2753 | TYPE_FIELD_BITPOS (type, n) = SYMBOL_VALUE (xsym); | |
2754 | TYPE_FIELD_BITSIZE (type, n) = 0; | |
2755 | } | |
2756 | if (syms == osyms) | |
2757 | break; | |
2758 | } | |
2759 | ||
2760 | #if 0 | |
2761 | /* This screws up perfectly good C programs with enums. FIXME. */ | |
2762 | /* Is this Modula-2's BOOLEAN type? Flag it as such if so. */ | |
2763 | if(TYPE_NFIELDS(type) == 2 && | |
2e4964ad FF |
2764 | ((STREQ(TYPE_FIELD_NAME(type,0),"TRUE") && |
2765 | STREQ(TYPE_FIELD_NAME(type,1),"FALSE")) || | |
2766 | (STREQ(TYPE_FIELD_NAME(type,1),"TRUE") && | |
2767 | STREQ(TYPE_FIELD_NAME(type,0),"FALSE")))) | |
d07734e3 FF |
2768 | TYPE_CODE(type) = TYPE_CODE_BOOL; |
2769 | #endif | |
2770 | ||
2771 | return type; | |
2772 | } | |
2773 | ||
2774 | /* Sun's ACC uses a somewhat saner method for specifying the builtin | |
2775 | typedefs in every file (for int, long, etc): | |
2776 | ||
2777 | type = b <signed> <width>; <offset>; <nbits> | |
2778 | signed = u or s. Possible c in addition to u or s (for char?). | |
2779 | offset = offset from high order bit to start bit of type. | |
2780 | width is # bytes in object of this type, nbits is # bits in type. | |
2781 | ||
2782 | The width/offset stuff appears to be for small objects stored in | |
2783 | larger ones (e.g. `shorts' in `int' registers). We ignore it for now, | |
2784 | FIXME. */ | |
2785 | ||
2786 | static struct type * | |
2787 | read_sun_builtin_type (pp, typenums, objfile) | |
2788 | char **pp; | |
2789 | int typenums[2]; | |
2790 | struct objfile *objfile; | |
2791 | { | |
2792 | int nbits; | |
2793 | int signed_type; | |
2794 | ||
2795 | switch (**pp) | |
2796 | { | |
2797 | case 's': | |
2798 | signed_type = 1; | |
2799 | break; | |
2800 | case 'u': | |
2801 | signed_type = 0; | |
2802 | break; | |
2803 | default: | |
2804 | return error_type (pp); | |
2805 | } | |
2806 | (*pp)++; | |
2807 | ||
2808 | /* For some odd reason, all forms of char put a c here. This is strange | |
2809 | because no other type has this honor. We can safely ignore this because | |
2810 | we actually determine 'char'acterness by the number of bits specified in | |
2811 | the descriptor. */ | |
2812 | ||
2813 | if (**pp == 'c') | |
2814 | (*pp)++; | |
2815 | ||
2816 | /* The first number appears to be the number of bytes occupied | |
2817 | by this type, except that unsigned short is 4 instead of 2. | |
2818 | Since this information is redundant with the third number, | |
2819 | we will ignore it. */ | |
2820 | read_number (pp, ';'); | |
2821 | ||
2822 | /* The second number is always 0, so ignore it too. */ | |
2823 | read_number (pp, ';'); | |
2824 | ||
2825 | /* The third number is the number of bits for this type. */ | |
2826 | nbits = read_number (pp, 0); | |
2827 | ||
f52bde21 | 2828 | #if 0 |
d07734e3 FF |
2829 | /* FIXME. Here we should just be able to make a type of the right |
2830 | number of bits and signedness. FIXME. */ | |
2831 | ||
2832 | if (nbits == TARGET_LONG_LONG_BIT) | |
2833 | return (lookup_fundamental_type (objfile, | |
2834 | signed_type? FT_LONG_LONG: FT_UNSIGNED_LONG_LONG)); | |
2835 | ||
2836 | if (nbits == TARGET_INT_BIT) | |
2837 | { | |
2838 | /* FIXME -- the only way to distinguish `int' from `long' | |
2839 | is to look at its name! */ | |
2840 | if (signed_type) | |
2841 | { | |
2842 | if (long_kludge_name && long_kludge_name[0] == 'l' /* long */) | |
2843 | return lookup_fundamental_type (objfile, FT_LONG); | |
2844 | else | |
2845 | return lookup_fundamental_type (objfile, FT_INTEGER); | |
2846 | } | |
2847 | else | |
2848 | { | |
2849 | if (long_kludge_name | |
2850 | && ((long_kludge_name[0] == 'u' /* unsigned */ && | |
2851 | long_kludge_name[9] == 'l' /* long */) | |
2852 | || (long_kludge_name[0] == 'l' /* long unsigned */))) | |
2853 | return lookup_fundamental_type (objfile, FT_UNSIGNED_LONG); | |
2854 | else | |
2855 | return lookup_fundamental_type (objfile, FT_UNSIGNED_INTEGER); | |
2856 | } | |
2857 | } | |
2858 | ||
2859 | if (nbits == TARGET_SHORT_BIT) | |
2860 | return (lookup_fundamental_type (objfile, | |
2861 | signed_type? FT_SHORT: FT_UNSIGNED_SHORT)); | |
2862 | ||
2863 | if (nbits == TARGET_CHAR_BIT) | |
2864 | return (lookup_fundamental_type (objfile, | |
2865 | signed_type? FT_CHAR: FT_UNSIGNED_CHAR)); | |
2866 | ||
2867 | if (nbits == 0) | |
2868 | return lookup_fundamental_type (objfile, FT_VOID); | |
2869 | ||
2870 | return error_type (pp); | |
f52bde21 JK |
2871 | #else |
2872 | return init_type (nbits == 0 ? TYPE_CODE_VOID : TYPE_CODE_INT, | |
2873 | nbits / TARGET_CHAR_BIT, | |
2874 | signed_type ? 0 : TYPE_FLAG_UNSIGNED, (char *)NULL, | |
2875 | objfile); | |
2876 | #endif | |
d07734e3 FF |
2877 | } |
2878 | ||
2879 | static struct type * | |
2880 | read_sun_floating_type (pp, typenums, objfile) | |
2881 | char **pp; | |
2882 | int typenums[2]; | |
2883 | struct objfile *objfile; | |
2884 | { | |
f52bde21 | 2885 | int details; |
d07734e3 FF |
2886 | int nbytes; |
2887 | ||
2888 | /* The first number has more details about the type, for example | |
f52bde21 JK |
2889 | FN_COMPLEX. */ |
2890 | details = read_number (pp, ';'); | |
d07734e3 FF |
2891 | |
2892 | /* The second number is the number of bytes occupied by this type */ | |
2893 | nbytes = read_number (pp, ';'); | |
2894 | ||
f52bde21 JK |
2895 | if (**pp != 0 || details == NF_COMPLEX || details == NF_COMPLEX16 |
2896 | || details == NF_COMPLEX32) | |
2897 | /* This is a type we can't handle, but we do know the size. | |
2898 | We also will be able to give it a name. */ | |
2899 | return init_type (TYPE_CODE_ERROR, nbytes, 0, NULL, objfile); | |
d07734e3 | 2900 | |
f52bde21 | 2901 | return init_type (TYPE_CODE_FLT, nbytes, 0, NULL, objfile); |
d07734e3 FF |
2902 | } |
2903 | ||
2904 | /* Read a number from the string pointed to by *PP. | |
2905 | The value of *PP is advanced over the number. | |
2906 | If END is nonzero, the character that ends the | |
2907 | number must match END, or an error happens; | |
2908 | and that character is skipped if it does match. | |
2909 | If END is zero, *PP is left pointing to that character. | |
2910 | ||
2911 | If the number fits in a long, set *VALUE and set *BITS to 0. | |
2912 | If not, set *BITS to be the number of bits in the number. | |
2913 | ||
2914 | If encounter garbage, set *BITS to -1. */ | |
2915 | ||
2916 | static void | |
2917 | read_huge_number (pp, end, valu, bits) | |
2918 | char **pp; | |
2919 | int end; | |
2920 | long *valu; | |
2921 | int *bits; | |
2922 | { | |
2923 | char *p = *pp; | |
2924 | int sign = 1; | |
2925 | long n = 0; | |
2926 | int radix = 10; | |
2927 | char overflow = 0; | |
2928 | int nbits = 0; | |
2929 | int c; | |
2930 | long upper_limit; | |
2931 | ||
2932 | if (*p == '-') | |
2933 | { | |
2934 | sign = -1; | |
2935 | p++; | |
2936 | } | |
2937 | ||
2938 | /* Leading zero means octal. GCC uses this to output values larger | |
2939 | than an int (because that would be hard in decimal). */ | |
2940 | if (*p == '0') | |
2941 | { | |
2942 | radix = 8; | |
2943 | p++; | |
2944 | } | |
2945 | ||
2946 | upper_limit = LONG_MAX / radix; | |
2947 | while ((c = *p++) >= '0' && c <= ('0' + radix)) | |
2948 | { | |
2949 | if (n <= upper_limit) | |
2950 | { | |
2951 | n *= radix; | |
2952 | n += c - '0'; /* FIXME this overflows anyway */ | |
2953 | } | |
2954 | else | |
2955 | overflow = 1; | |
2956 | ||
2957 | /* This depends on large values being output in octal, which is | |
2958 | what GCC does. */ | |
2959 | if (radix == 8) | |
2960 | { | |
2961 | if (nbits == 0) | |
2962 | { | |
2963 | if (c == '0') | |
2964 | /* Ignore leading zeroes. */ | |
2965 | ; | |
2966 | else if (c == '1') | |
2967 | nbits = 1; | |
2968 | else if (c == '2' || c == '3') | |
2969 | nbits = 2; | |
2970 | else | |
2971 | nbits = 3; | |
2972 | } | |
2973 | else | |
2974 | nbits += 3; | |
2975 | } | |
2976 | } | |
2977 | if (end) | |
2978 | { | |
2979 | if (c && c != end) | |
2980 | { | |
2981 | if (bits != NULL) | |
2982 | *bits = -1; | |
2983 | return; | |
2984 | } | |
2985 | } | |
2986 | else | |
2987 | --p; | |
2988 | ||
2989 | *pp = p; | |
2990 | if (overflow) | |
2991 | { | |
2992 | if (nbits == 0) | |
2993 | { | |
2994 | /* Large decimal constants are an error (because it is hard to | |
2995 | count how many bits are in them). */ | |
2996 | if (bits != NULL) | |
2997 | *bits = -1; | |
2998 | return; | |
2999 | } | |
3000 | ||
3001 | /* -0x7f is the same as 0x80. So deal with it by adding one to | |
3002 | the number of bits. */ | |
3003 | if (sign == -1) | |
3004 | ++nbits; | |
3005 | if (bits) | |
3006 | *bits = nbits; | |
3007 | } | |
3008 | else | |
3009 | { | |
3010 | if (valu) | |
3011 | *valu = n * sign; | |
3012 | if (bits) | |
3013 | *bits = 0; | |
3014 | } | |
3015 | } | |
3016 | ||
3017 | static struct type * | |
3018 | read_range_type (pp, typenums, objfile) | |
3019 | char **pp; | |
3020 | int typenums[2]; | |
3021 | struct objfile *objfile; | |
3022 | { | |
3023 | int rangenums[2]; | |
3024 | long n2, n3; | |
3025 | int n2bits, n3bits; | |
3026 | int self_subrange; | |
3027 | struct type *result_type; | |
a8a69e63 | 3028 | struct type *index_type; |
d07734e3 FF |
3029 | |
3030 | /* First comes a type we are a subrange of. | |
3031 | In C it is usually 0, 1 or the type being defined. */ | |
3032 | read_type_number (pp, rangenums); | |
3033 | self_subrange = (rangenums[0] == typenums[0] && | |
3034 | rangenums[1] == typenums[1]); | |
3035 | ||
3036 | /* A semicolon should now follow; skip it. */ | |
3037 | if (**pp == ';') | |
3038 | (*pp)++; | |
3039 | ||
3040 | /* The remaining two operands are usually lower and upper bounds | |
3041 | of the range. But in some special cases they mean something else. */ | |
3042 | read_huge_number (pp, ';', &n2, &n2bits); | |
3043 | read_huge_number (pp, ';', &n3, &n3bits); | |
3044 | ||
3045 | if (n2bits == -1 || n3bits == -1) | |
3046 | return error_type (pp); | |
3047 | ||
3048 | /* If limits are huge, must be large integral type. */ | |
3049 | if (n2bits != 0 || n3bits != 0) | |
3050 | { | |
3051 | char got_signed = 0; | |
3052 | char got_unsigned = 0; | |
3053 | /* Number of bits in the type. */ | |
3054 | int nbits; | |
3055 | ||
3056 | /* Range from 0 to <large number> is an unsigned large integral type. */ | |
3057 | if ((n2bits == 0 && n2 == 0) && n3bits != 0) | |
3058 | { | |
3059 | got_unsigned = 1; | |
3060 | nbits = n3bits; | |
3061 | } | |
3062 | /* Range from <large number> to <large number>-1 is a large signed | |
3063 | integral type. */ | |
3064 | else if (n2bits != 0 && n3bits != 0 && n2bits == n3bits + 1) | |
3065 | { | |
3066 | got_signed = 1; | |
3067 | nbits = n2bits; | |
3068 | } | |
3069 | ||
d07734e3 FF |
3070 | if (got_signed || got_unsigned) |
3071 | { | |
f52bde21 JK |
3072 | return init_type (TYPE_CODE_INT, nbits / TARGET_CHAR_BIT, |
3073 | got_unsigned ? TYPE_FLAG_UNSIGNED : 0, NULL, | |
3074 | objfile); | |
d07734e3 FF |
3075 | } |
3076 | else | |
3077 | return error_type (pp); | |
3078 | } | |
3079 | ||
3080 | /* A type defined as a subrange of itself, with bounds both 0, is void. */ | |
3081 | if (self_subrange && n2 == 0 && n3 == 0) | |
f52bde21 | 3082 | return init_type (TYPE_CODE_VOID, 0, 0, NULL, objfile); |
d07734e3 FF |
3083 | |
3084 | /* If n3 is zero and n2 is not, we want a floating type, | |
3085 | and n2 is the width in bytes. | |
3086 | ||
3087 | Fortran programs appear to use this for complex types also, | |
3088 | and they give no way to distinguish between double and single-complex! | |
f52bde21 JK |
3089 | |
3090 | GDB does not have complex types. | |
3091 | ||
3092 | Just return the complex as a float of that size. It won't work right | |
d07734e3 FF |
3093 | for the complex values, but at least it makes the file loadable. |
3094 | ||
3095 | FIXME, we may be able to distinguish these by their names. FIXME. */ | |
3096 | ||
3097 | if (n3 == 0 && n2 > 0) | |
3098 | { | |
f52bde21 | 3099 | return init_type (TYPE_CODE_FLT, n2, 0, NULL, objfile); |
d07734e3 FF |
3100 | } |
3101 | ||
3102 | /* If the upper bound is -1, it must really be an unsigned int. */ | |
3103 | ||
3104 | else if (n2 == 0 && n3 == -1) | |
3105 | { | |
f52bde21 JK |
3106 | /* It is unsigned int or unsigned long. */ |
3107 | /* GCC sometimes uses this for long long too. We could | |
3108 | distinguish it by the name, but we don't. */ | |
3109 | return init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT, | |
3110 | TYPE_FLAG_UNSIGNED, NULL, objfile); | |
d07734e3 FF |
3111 | } |
3112 | ||
3113 | /* Special case: char is defined (Who knows why) as a subrange of | |
3114 | itself with range 0-127. */ | |
3115 | else if (self_subrange && n2 == 0 && n3 == 127) | |
f52bde21 JK |
3116 | return init_type (TYPE_CODE_INT, 1, 0, NULL, objfile); |
3117 | ||
3118 | /* We used to do this only for subrange of self or subrange of int. */ | |
3119 | else if (n2 == 0) | |
3120 | { | |
3121 | if (n3 < 0) | |
3122 | /* n3 actually gives the size. */ | |
3123 | return init_type (TYPE_CODE_INT, - n3, TYPE_FLAG_UNSIGNED, | |
3124 | NULL, objfile); | |
3125 | if (n3 == 0xff) | |
3126 | return init_type (TYPE_CODE_INT, 1, TYPE_FLAG_UNSIGNED, NULL, objfile); | |
3127 | if (n3 == 0xffff) | |
3128 | return init_type (TYPE_CODE_INT, 2, TYPE_FLAG_UNSIGNED, NULL, objfile); | |
3129 | ||
3130 | /* -1 is used for the upper bound of (4 byte) "unsigned int" and | |
3131 | "unsigned long", and we already checked for that, | |
3132 | so don't need to test for it here. */ | |
3133 | } | |
3134 | /* I think this is for Convex "long long". Since I don't know whether | |
3135 | Convex sets self_subrange, I also accept that particular size regardless | |
3136 | of self_subrange. */ | |
3137 | else if (n3 == 0 && n2 < 0 | |
3138 | && (self_subrange | |
3139 | || n2 == - TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT)) | |
3140 | return init_type (TYPE_CODE_INT, - n2, 0, NULL, objfile); | |
d07734e3 FF |
3141 | else if (n2 == -n3 -1) |
3142 | { | |
f52bde21 JK |
3143 | if (n3 == 0x7f) |
3144 | return init_type (TYPE_CODE_INT, 1, 0, NULL, objfile); | |
3145 | if (n3 == 0x7fff) | |
3146 | return init_type (TYPE_CODE_INT, 2, 0, NULL, objfile); | |
3147 | if (n3 == 0x7fffffff) | |
3148 | return init_type (TYPE_CODE_INT, 4, 0, NULL, objfile); | |
d07734e3 FF |
3149 | } |
3150 | ||
3151 | /* We have a real range type on our hands. Allocate space and | |
3152 | return a real pointer. */ | |
3153 | ||
3154 | /* At this point I don't have the faintest idea how to deal with | |
3155 | a self_subrange type; I'm going to assume that this is used | |
3156 | as an idiom, and that all of them are special cases. So . . . */ | |
3157 | if (self_subrange) | |
3158 | return error_type (pp); | |
3159 | ||
a8a69e63 FF |
3160 | index_type = *dbx_lookup_type (rangenums); |
3161 | if (index_type == NULL) | |
3162 | { | |
f52bde21 JK |
3163 | /* Does this actually ever happen? Is that why we are worrying |
3164 | about dealing with it rather than just calling error_type? */ | |
3165 | ||
3166 | static struct type *range_type_index; | |
3167 | ||
a8a69e63 | 3168 | complain (&range_type_base_complaint, rangenums[1]); |
f52bde21 JK |
3169 | if (range_type_index == NULL) |
3170 | range_type_index = | |
3171 | init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT, | |
3172 | 0, "range type index type", NULL); | |
3173 | index_type = range_type_index; | |
a8a69e63 | 3174 | } |
d07734e3 | 3175 | |
a8a69e63 FF |
3176 | result_type = create_range_type ((struct type *) NULL, index_type, n2, n3); |
3177 | return (result_type); | |
d07734e3 FF |
3178 | } |
3179 | ||
3180 | /* Read a number from the string pointed to by *PP. | |
3181 | The value of *PP is advanced over the number. | |
3182 | If END is nonzero, the character that ends the | |
3183 | number must match END, or an error happens; | |
3184 | and that character is skipped if it does match. | |
3185 | If END is zero, *PP is left pointing to that character. */ | |
3186 | ||
3187 | long | |
3188 | read_number (pp, end) | |
3189 | char **pp; | |
3190 | int end; | |
3191 | { | |
3192 | register char *p = *pp; | |
3193 | register long n = 0; | |
3194 | register int c; | |
3195 | int sign = 1; | |
3196 | ||
3197 | /* Handle an optional leading minus sign. */ | |
3198 | ||
3199 | if (*p == '-') | |
3200 | { | |
3201 | sign = -1; | |
3202 | p++; | |
3203 | } | |
3204 | ||
3205 | /* Read the digits, as far as they go. */ | |
3206 | ||
3207 | while ((c = *p++) >= '0' && c <= '9') | |
3208 | { | |
3209 | n *= 10; | |
3210 | n += c - '0'; | |
3211 | } | |
3212 | if (end) | |
3213 | { | |
3214 | if (c && c != end) | |
3215 | error ("Invalid symbol data: invalid character \\%03o at symbol pos %d.", c, symnum); | |
3216 | } | |
3217 | else | |
3218 | --p; | |
3219 | ||
3220 | *pp = p; | |
3221 | return n * sign; | |
3222 | } | |
3223 | ||
3224 | /* Read in an argument list. This is a list of types, separated by commas | |
3225 | and terminated with END. Return the list of types read in, or (struct type | |
3226 | **)-1 if there is an error. */ | |
3227 | ||
3228 | static struct type ** | |
3229 | read_args (pp, end, objfile) | |
3230 | char **pp; | |
3231 | int end; | |
3232 | struct objfile *objfile; | |
3233 | { | |
3234 | /* FIXME! Remove this arbitrary limit! */ | |
3235 | struct type *types[1024], **rval; /* allow for fns of 1023 parameters */ | |
3236 | int n = 0; | |
3237 | ||
3238 | while (**pp != end) | |
3239 | { | |
3240 | if (**pp != ',') | |
3241 | /* Invalid argument list: no ','. */ | |
3242 | return (struct type **)-1; | |
e7177cc2 FF |
3243 | (*pp)++; |
3244 | STABS_CONTINUE (pp); | |
d07734e3 FF |
3245 | types[n++] = read_type (pp, objfile); |
3246 | } | |
e7177cc2 | 3247 | (*pp)++; /* get past `end' (the ':' character) */ |
d07734e3 FF |
3248 | |
3249 | if (n == 1) | |
3250 | { | |
3251 | rval = (struct type **) xmalloc (2 * sizeof (struct type *)); | |
3252 | } | |
3253 | else if (TYPE_CODE (types[n-1]) != TYPE_CODE_VOID) | |
3254 | { | |
3255 | rval = (struct type **) xmalloc ((n + 1) * sizeof (struct type *)); | |
3256 | memset (rval + n, 0, sizeof (struct type *)); | |
3257 | } | |
3258 | else | |
3259 | { | |
3260 | rval = (struct type **) xmalloc (n * sizeof (struct type *)); | |
3261 | } | |
3262 | memcpy (rval, types, n * sizeof (struct type *)); | |
3263 | return rval; | |
3264 | } | |
3265 | ||
3266 | /* Add a common block's start address to the offset of each symbol | |
3267 | declared to be in it (by being between a BCOMM/ECOMM pair that uses | |
3268 | the common block name). */ | |
3269 | ||
3270 | static void | |
3271 | fix_common_block (sym, valu) | |
3272 | struct symbol *sym; | |
3273 | int valu; | |
3274 | { | |
3275 | struct pending *next = (struct pending *) SYMBOL_NAMESPACE (sym); | |
3276 | for ( ; next; next = next->next) | |
3277 | { | |
3278 | register int j; | |
3279 | for (j = next->nsyms - 1; j >= 0; j--) | |
3280 | SYMBOL_VALUE_ADDRESS (next->symbol[j]) += valu; | |
3281 | } | |
3282 | } | |
3283 | ||
3284 | ||
3285 | \f | |
3286 | /* What about types defined as forward references inside of a small lexical | |
3287 | scope? */ | |
3288 | /* Add a type to the list of undefined types to be checked through | |
3289 | once this file has been read in. */ | |
3290 | ||
3291 | void | |
3292 | add_undefined_type (type) | |
3293 | struct type *type; | |
3294 | { | |
3295 | if (undef_types_length == undef_types_allocated) | |
3296 | { | |
3297 | undef_types_allocated *= 2; | |
3298 | undef_types = (struct type **) | |
3299 | xrealloc ((char *) undef_types, | |
3300 | undef_types_allocated * sizeof (struct type *)); | |
3301 | } | |
3302 | undef_types[undef_types_length++] = type; | |
3303 | } | |
3304 | ||
3305 | /* Go through each undefined type, see if it's still undefined, and fix it | |
3306 | up if possible. We have two kinds of undefined types: | |
3307 | ||
3308 | TYPE_CODE_ARRAY: Array whose target type wasn't defined yet. | |
3309 | Fix: update array length using the element bounds | |
3310 | and the target type's length. | |
3311 | TYPE_CODE_STRUCT, TYPE_CODE_UNION: Structure whose fields were not | |
3312 | yet defined at the time a pointer to it was made. | |
3313 | Fix: Do a full lookup on the struct/union tag. */ | |
3314 | void | |
3315 | cleanup_undefined_types () | |
3316 | { | |
3317 | struct type **type; | |
3318 | ||
3319 | for (type = undef_types; type < undef_types + undef_types_length; type++) | |
3320 | { | |
3321 | switch (TYPE_CODE (*type)) | |
3322 | { | |
3323 | ||
3324 | case TYPE_CODE_STRUCT: | |
3325 | case TYPE_CODE_UNION: | |
3326 | case TYPE_CODE_ENUM: | |
3327 | { | |
3328 | /* Check if it has been defined since. */ | |
3329 | if (TYPE_FLAGS (*type) & TYPE_FLAG_STUB) | |
3330 | { | |
3331 | struct pending *ppt; | |
3332 | int i; | |
3333 | /* Name of the type, without "struct" or "union" */ | |
3334 | char *typename = TYPE_NAME (*type); | |
3335 | ||
3336 | if (!strncmp (typename, "struct ", 7)) | |
3337 | typename += 7; | |
3338 | if (!strncmp (typename, "union ", 6)) | |
3339 | typename += 6; | |
3340 | if (!strncmp (typename, "enum ", 5)) | |
3341 | typename += 5; | |
3342 | ||
3343 | for (ppt = file_symbols; ppt; ppt = ppt->next) | |
3344 | { | |
3345 | for (i = 0; i < ppt->nsyms; i++) | |
3346 | { | |
3347 | struct symbol *sym = ppt->symbol[i]; | |
3348 | ||
3349 | if (SYMBOL_CLASS (sym) == LOC_TYPEDEF | |
3350 | && SYMBOL_NAMESPACE (sym) == STRUCT_NAMESPACE | |
3351 | && (TYPE_CODE (SYMBOL_TYPE (sym)) == | |
3352 | TYPE_CODE (*type)) | |
2e4964ad | 3353 | && STREQ (SYMBOL_NAME (sym), typename)) |
d07734e3 FF |
3354 | { |
3355 | memcpy (*type, SYMBOL_TYPE (sym), | |
3356 | sizeof (struct type)); | |
3357 | } | |
3358 | } | |
3359 | } | |
3360 | } | |
3361 | } | |
3362 | break; | |
3363 | ||
3364 | case TYPE_CODE_ARRAY: | |
3365 | { | |
3366 | struct type *range_type; | |
3367 | int lower, upper; | |
3368 | ||
3369 | if (TYPE_LENGTH (*type) != 0) /* Better be unknown */ | |
3370 | goto badtype; | |
3371 | if (TYPE_NFIELDS (*type) != 1) | |
3372 | goto badtype; | |
3373 | range_type = TYPE_FIELD_TYPE (*type, 0); | |
3374 | if (TYPE_CODE (range_type) != TYPE_CODE_RANGE) | |
3375 | goto badtype; | |
3376 | ||
3377 | /* Now recompute the length of the array type, based on its | |
3378 | number of elements and the target type's length. */ | |
3379 | lower = TYPE_FIELD_BITPOS (range_type, 0); | |
3380 | upper = TYPE_FIELD_BITPOS (range_type, 1); | |
3381 | TYPE_LENGTH (*type) = (upper - lower + 1) | |
3382 | * TYPE_LENGTH (TYPE_TARGET_TYPE (*type)); | |
3383 | } | |
3384 | break; | |
3385 | ||
3386 | default: | |
3387 | badtype: | |
3388 | error ("GDB internal error. cleanup_undefined_types with bad type %d.", TYPE_CODE (*type)); | |
3389 | break; | |
3390 | } | |
3391 | } | |
3392 | undef_types_length = 0; | |
3393 | } | |
3394 | ||
3395 | /* Scan through all of the global symbols defined in the object file, | |
3396 | assigning values to the debugging symbols that need to be assigned | |
3397 | to. Get these symbols from the minimal symbol table. */ | |
3398 | ||
3399 | void | |
3400 | scan_file_globals (objfile) | |
3401 | struct objfile *objfile; | |
3402 | { | |
3403 | int hash; | |
3404 | struct minimal_symbol *msymbol; | |
3405 | struct symbol *sym, *prev; | |
3406 | ||
3407 | if (objfile->msymbols == 0) /* Beware the null file. */ | |
3408 | return; | |
3409 | ||
2e4964ad | 3410 | for (msymbol = objfile -> msymbols; SYMBOL_NAME (msymbol) != NULL; msymbol++) |
d07734e3 FF |
3411 | { |
3412 | QUIT; | |
3413 | ||
3414 | prev = NULL; | |
3415 | ||
3416 | /* Get the hash index and check all the symbols | |
3417 | under that hash index. */ | |
3418 | ||
2e4964ad | 3419 | hash = hashname (SYMBOL_NAME (msymbol)); |
d07734e3 FF |
3420 | |
3421 | for (sym = global_sym_chain[hash]; sym;) | |
3422 | { | |
2e4964ad FF |
3423 | if (SYMBOL_NAME (msymbol)[0] == SYMBOL_NAME (sym)[0] && |
3424 | STREQ(SYMBOL_NAME (msymbol) + 1, SYMBOL_NAME (sym) + 1)) | |
d07734e3 FF |
3425 | { |
3426 | /* Splice this symbol out of the hash chain and | |
3427 | assign the value we have to it. */ | |
3428 | if (prev) | |
3429 | { | |
3430 | SYMBOL_VALUE_CHAIN (prev) = SYMBOL_VALUE_CHAIN (sym); | |
3431 | } | |
3432 | else | |
3433 | { | |
3434 | global_sym_chain[hash] = SYMBOL_VALUE_CHAIN (sym); | |
3435 | } | |
3436 | ||
3437 | /* Check to see whether we need to fix up a common block. */ | |
3438 | /* Note: this code might be executed several times for | |
3439 | the same symbol if there are multiple references. */ | |
3440 | ||
3441 | if (SYMBOL_CLASS (sym) == LOC_BLOCK) | |
3442 | { | |
2e4964ad | 3443 | fix_common_block (sym, SYMBOL_VALUE_ADDRESS (msymbol)); |
d07734e3 FF |
3444 | } |
3445 | else | |
3446 | { | |
2e4964ad | 3447 | SYMBOL_VALUE_ADDRESS (sym) = SYMBOL_VALUE_ADDRESS (msymbol); |
d07734e3 FF |
3448 | } |
3449 | ||
3450 | if (prev) | |
3451 | { | |
3452 | sym = SYMBOL_VALUE_CHAIN (prev); | |
3453 | } | |
3454 | else | |
3455 | { | |
3456 | sym = global_sym_chain[hash]; | |
3457 | } | |
3458 | } | |
3459 | else | |
3460 | { | |
3461 | prev = sym; | |
3462 | sym = SYMBOL_VALUE_CHAIN (sym); | |
3463 | } | |
3464 | } | |
3465 | } | |
3466 | } | |
3467 | ||
3468 | /* Initialize anything that needs initializing when starting to read | |
3469 | a fresh piece of a symbol file, e.g. reading in the stuff corresponding | |
3470 | to a psymtab. */ | |
3471 | ||
3472 | void | |
3473 | stabsread_init () | |
3474 | { | |
3475 | } | |
3476 | ||
3477 | /* Initialize anything that needs initializing when a completely new | |
3478 | symbol file is specified (not just adding some symbols from another | |
3479 | file, e.g. a shared library). */ | |
3480 | ||
3481 | void | |
3482 | stabsread_new_init () | |
3483 | { | |
3484 | /* Empty the hash table of global syms looking for values. */ | |
3485 | memset (global_sym_chain, 0, sizeof (global_sym_chain)); | |
3486 | } | |
3487 | ||
3488 | /* Initialize anything that needs initializing at the same time as | |
3489 | start_symtab() is called. */ | |
3490 | ||
3491 | void start_stabs () | |
3492 | { | |
3493 | global_stabs = NULL; /* AIX COFF */ | |
3494 | /* Leave FILENUM of 0 free for builtin types and this file's types. */ | |
3495 | n_this_object_header_files = 1; | |
3496 | type_vector_length = 0; | |
3497 | type_vector = (struct type **) 0; | |
3498 | } | |
3499 | ||
3500 | /* Call after end_symtab() */ | |
3501 | ||
3502 | void end_stabs () | |
3503 | { | |
3504 | if (type_vector) | |
3505 | { | |
3506 | free ((char *) type_vector); | |
3507 | } | |
3508 | type_vector = 0; | |
3509 | type_vector_length = 0; | |
3510 | previous_stab_code = 0; | |
3511 | } | |
3512 | ||
3513 | void | |
3514 | finish_global_stabs (objfile) | |
d07734e3 FF |
3515 | struct objfile *objfile; |
3516 | { | |
3517 | if (global_stabs) | |
3518 | { | |
3519 | patch_block_stabs (global_symbols, global_stabs, objfile); | |
3520 | free ((PTR) global_stabs); | |
3521 | global_stabs = NULL; | |
3522 | } | |
3523 | } | |
3524 | ||
3525 | /* Initializer for this module */ | |
3526 | ||
3527 | void | |
3528 | _initialize_stabsread () | |
3529 | { | |
3530 | undef_types_allocated = 20; | |
3531 | undef_types_length = 0; | |
3532 | undef_types = (struct type **) | |
3533 | xmalloc (undef_types_allocated * sizeof (struct type *)); | |
3534 | } |