Commit | Line | Data |
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c906108c | 1 | /* Support routines for decoding "stabs" debugging information format. |
b6ba6518 | 2 | Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, |
1e698235 | 3 | 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003 |
c5aa993b | 4 | Free Software Foundation, Inc. |
c906108c | 5 | |
c5aa993b | 6 | This file is part of GDB. |
c906108c | 7 | |
c5aa993b JM |
8 | This program is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
c906108c | 12 | |
c5aa993b JM |
13 | This program is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
c906108c | 17 | |
c5aa993b JM |
18 | You should have received a copy of the GNU General Public License |
19 | along with this program; if not, write to the Free Software | |
20 | Foundation, Inc., 59 Temple Place - Suite 330, | |
21 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
22 | |
23 | /* Support routines for reading and decoding debugging information in | |
24 | the "stabs" format. This format is used with many systems that use | |
25 | the a.out object file format, as well as some systems that use | |
26 | COFF or ELF where the stabs data is placed in a special section. | |
27 | Avoid placing any object file format specific code in this file. */ | |
28 | ||
29 | #include "defs.h" | |
30 | #include "gdb_string.h" | |
31 | #include "bfd.h" | |
04ea0df1 | 32 | #include "gdb_obstack.h" |
c906108c SS |
33 | #include "symtab.h" |
34 | #include "gdbtypes.h" | |
35 | #include "expression.h" | |
36 | #include "symfile.h" | |
37 | #include "objfiles.h" | |
38 | #include "aout/stab_gnu.h" /* We always use GNU stabs, not native */ | |
39 | #include "libaout.h" | |
40 | #include "aout/aout64.h" | |
41 | #include "gdb-stabs.h" | |
42 | #include "buildsym.h" | |
43 | #include "complaints.h" | |
44 | #include "demangle.h" | |
45 | #include "language.h" | |
d16aafd8 | 46 | #include "doublest.h" |
de17c821 DJ |
47 | #include "cp-abi.h" |
48 | #include "cp-support.h" | |
c906108c SS |
49 | |
50 | #include <ctype.h> | |
51 | ||
52 | /* Ask stabsread.h to define the vars it normally declares `extern'. */ | |
c5aa993b JM |
53 | #define EXTERN |
54 | /**/ | |
c906108c SS |
55 | #include "stabsread.h" /* Our own declarations */ |
56 | #undef EXTERN | |
57 | ||
a14ed312 | 58 | extern void _initialize_stabsread (void); |
392a587b | 59 | |
c906108c SS |
60 | /* The routines that read and process a complete stabs for a C struct or |
61 | C++ class pass lists of data member fields and lists of member function | |
62 | fields in an instance of a field_info structure, as defined below. | |
63 | This is part of some reorganization of low level C++ support and is | |
64 | expected to eventually go away... (FIXME) */ | |
65 | ||
66 | struct field_info | |
c5aa993b JM |
67 | { |
68 | struct nextfield | |
69 | { | |
70 | struct nextfield *next; | |
c906108c | 71 | |
c5aa993b JM |
72 | /* This is the raw visibility from the stab. It is not checked |
73 | for being one of the visibilities we recognize, so code which | |
74 | examines this field better be able to deal. */ | |
75 | int visibility; | |
c906108c | 76 | |
c5aa993b JM |
77 | struct field field; |
78 | } | |
79 | *list; | |
80 | struct next_fnfieldlist | |
81 | { | |
82 | struct next_fnfieldlist *next; | |
83 | struct fn_fieldlist fn_fieldlist; | |
84 | } | |
85 | *fnlist; | |
86 | }; | |
c906108c SS |
87 | |
88 | static void | |
a14ed312 KB |
89 | read_one_struct_field (struct field_info *, char **, char *, |
90 | struct type *, struct objfile *); | |
c906108c | 91 | |
a14ed312 | 92 | static char *get_substring (char **, int); |
c906108c | 93 | |
a14ed312 | 94 | static struct type *dbx_alloc_type (int[2], struct objfile *); |
c906108c | 95 | |
a14ed312 | 96 | static long read_huge_number (char **, int, int *); |
c906108c | 97 | |
a14ed312 | 98 | static struct type *error_type (char **, struct objfile *); |
c906108c SS |
99 | |
100 | static void | |
a14ed312 KB |
101 | patch_block_stabs (struct pending *, struct pending_stabs *, |
102 | struct objfile *); | |
c906108c | 103 | |
a14ed312 | 104 | static void fix_common_block (struct symbol *, int); |
c906108c | 105 | |
a14ed312 | 106 | static int read_type_number (char **, int *); |
c906108c | 107 | |
a7a48797 EZ |
108 | static struct type *read_type (char **, struct objfile *); |
109 | ||
a14ed312 | 110 | static struct type *read_range_type (char **, int[2], struct objfile *); |
c906108c | 111 | |
a14ed312 | 112 | static struct type *read_sun_builtin_type (char **, int[2], struct objfile *); |
c906108c | 113 | |
a14ed312 KB |
114 | static struct type *read_sun_floating_type (char **, int[2], |
115 | struct objfile *); | |
c906108c | 116 | |
a14ed312 | 117 | static struct type *read_enum_type (char **, struct type *, struct objfile *); |
c906108c | 118 | |
a14ed312 | 119 | static struct type *rs6000_builtin_type (int); |
c906108c SS |
120 | |
121 | static int | |
a14ed312 KB |
122 | read_member_functions (struct field_info *, char **, struct type *, |
123 | struct objfile *); | |
c906108c SS |
124 | |
125 | static int | |
a14ed312 KB |
126 | read_struct_fields (struct field_info *, char **, struct type *, |
127 | struct objfile *); | |
c906108c SS |
128 | |
129 | static int | |
a14ed312 KB |
130 | read_baseclasses (struct field_info *, char **, struct type *, |
131 | struct objfile *); | |
c906108c SS |
132 | |
133 | static int | |
a14ed312 KB |
134 | read_tilde_fields (struct field_info *, char **, struct type *, |
135 | struct objfile *); | |
c906108c | 136 | |
a14ed312 | 137 | static int attach_fn_fields_to_type (struct field_info *, struct type *); |
c906108c | 138 | |
570b8f7c AC |
139 | static int attach_fields_to_type (struct field_info *, struct type *, |
140 | struct objfile *); | |
c906108c | 141 | |
a14ed312 | 142 | static struct type *read_struct_type (char **, struct type *, |
2ae1c2d2 | 143 | enum type_code, |
a14ed312 | 144 | struct objfile *); |
c906108c | 145 | |
a14ed312 KB |
146 | static struct type *read_array_type (char **, struct type *, |
147 | struct objfile *); | |
c906108c | 148 | |
ad2f7632 | 149 | static struct field *read_args (char **, int, struct objfile *, int *, int *); |
c906108c | 150 | |
a7a48797 EZ |
151 | static void add_undefined_type (struct type *); |
152 | ||
c906108c | 153 | static int |
a14ed312 KB |
154 | read_cpp_abbrev (struct field_info *, char **, struct type *, |
155 | struct objfile *); | |
c906108c | 156 | |
7e1d63ec AF |
157 | static char *find_name_end (char *name); |
158 | ||
a14ed312 | 159 | static int process_reference (char **string); |
c906108c | 160 | |
a14ed312 | 161 | static CORE_ADDR ref_search_value (int refnum); |
c906108c | 162 | |
a14ed312 | 163 | void stabsread_clear_cache (void); |
7be570e7 | 164 | |
8343f86c DJ |
165 | static const char vptr_name[] = "_vptr$"; |
166 | static const char vb_name[] = "_vb$"; | |
c906108c SS |
167 | |
168 | /* Define this as 1 if a pcc declaration of a char or short argument | |
169 | gives the correct address. Otherwise assume pcc gives the | |
170 | address of the corresponding int, which is not the same on a | |
171 | big-endian machine. */ | |
172 | ||
7a292a7a | 173 | #if !defined (BELIEVE_PCC_PROMOTION) |
c906108c SS |
174 | #define BELIEVE_PCC_PROMOTION 0 |
175 | #endif | |
176 | ||
23136709 KB |
177 | static void |
178 | invalid_cpp_abbrev_complaint (const char *arg1) | |
179 | { | |
180 | complaint (&symfile_complaints, "invalid C++ abbreviation `%s'", arg1); | |
181 | } | |
c906108c | 182 | |
23136709 KB |
183 | static void |
184 | reg_value_complaint (int arg1, int arg2, const char *arg3) | |
185 | { | |
186 | complaint (&symfile_complaints, | |
187 | "register number %d too large (max %d) in symbol %s", arg1, arg2, | |
188 | arg3); | |
189 | } | |
c906108c | 190 | |
23136709 KB |
191 | static void |
192 | stabs_general_complaint (const char *arg1) | |
193 | { | |
194 | complaint (&symfile_complaints, "%s", arg1); | |
195 | } | |
c906108c | 196 | |
23136709 KB |
197 | static void |
198 | lrs_general_complaint (const char *arg1) | |
199 | { | |
200 | complaint (&symfile_complaints, "%s", arg1); | |
201 | } | |
c906108c SS |
202 | |
203 | /* Make a list of forward references which haven't been defined. */ | |
204 | ||
205 | static struct type **undef_types; | |
206 | static int undef_types_allocated; | |
207 | static int undef_types_length; | |
208 | static struct symbol *current_symbol = NULL; | |
209 | ||
210 | /* Check for and handle cretinous stabs symbol name continuation! */ | |
211 | #define STABS_CONTINUE(pp,objfile) \ | |
212 | do { \ | |
213 | if (**(pp) == '\\' || (**(pp) == '?' && (*(pp))[1] == '\0')) \ | |
214 | *(pp) = next_symbol_text (objfile); \ | |
215 | } while (0) | |
216 | \f | |
c906108c SS |
217 | |
218 | /* Look up a dbx type-number pair. Return the address of the slot | |
219 | where the type for that number-pair is stored. | |
220 | The number-pair is in TYPENUMS. | |
221 | ||
222 | This can be used for finding the type associated with that pair | |
223 | or for associating a new type with the pair. */ | |
224 | ||
a7a48797 | 225 | static struct type ** |
35a2f538 | 226 | dbx_lookup_type (int typenums[2]) |
c906108c | 227 | { |
52f0bd74 AC |
228 | int filenum = typenums[0]; |
229 | int index = typenums[1]; | |
c906108c | 230 | unsigned old_len; |
52f0bd74 AC |
231 | int real_filenum; |
232 | struct header_file *f; | |
c906108c SS |
233 | int f_orig_length; |
234 | ||
235 | if (filenum == -1) /* -1,-1 is for temporary types. */ | |
236 | return 0; | |
237 | ||
238 | if (filenum < 0 || filenum >= n_this_object_header_files) | |
239 | { | |
23136709 KB |
240 | complaint (&symfile_complaints, |
241 | "Invalid symbol data: type number (%d,%d) out of range at symtab pos %d.", | |
242 | filenum, index, symnum); | |
c906108c SS |
243 | goto error_return; |
244 | } | |
245 | ||
246 | if (filenum == 0) | |
247 | { | |
248 | if (index < 0) | |
249 | { | |
250 | /* Caller wants address of address of type. We think | |
251 | that negative (rs6k builtin) types will never appear as | |
252 | "lvalues", (nor should they), so we stuff the real type | |
253 | pointer into a temp, and return its address. If referenced, | |
254 | this will do the right thing. */ | |
255 | static struct type *temp_type; | |
256 | ||
c5aa993b | 257 | temp_type = rs6000_builtin_type (index); |
c906108c SS |
258 | return &temp_type; |
259 | } | |
260 | ||
261 | /* Type is defined outside of header files. | |
c5aa993b | 262 | Find it in this object file's type vector. */ |
c906108c SS |
263 | if (index >= type_vector_length) |
264 | { | |
265 | old_len = type_vector_length; | |
266 | if (old_len == 0) | |
267 | { | |
268 | type_vector_length = INITIAL_TYPE_VECTOR_LENGTH; | |
269 | type_vector = (struct type **) | |
270 | xmalloc (type_vector_length * sizeof (struct type *)); | |
271 | } | |
272 | while (index >= type_vector_length) | |
273 | { | |
274 | type_vector_length *= 2; | |
275 | } | |
276 | type_vector = (struct type **) | |
277 | xrealloc ((char *) type_vector, | |
278 | (type_vector_length * sizeof (struct type *))); | |
279 | memset (&type_vector[old_len], 0, | |
280 | (type_vector_length - old_len) * sizeof (struct type *)); | |
c906108c SS |
281 | } |
282 | return (&type_vector[index]); | |
283 | } | |
284 | else | |
285 | { | |
286 | real_filenum = this_object_header_files[filenum]; | |
287 | ||
288 | if (real_filenum >= N_HEADER_FILES (current_objfile)) | |
289 | { | |
290 | struct type *temp_type; | |
291 | struct type **temp_type_p; | |
292 | ||
293 | warning ("GDB internal error: bad real_filenum"); | |
294 | ||
295 | error_return: | |
296 | temp_type = init_type (TYPE_CODE_ERROR, 0, 0, NULL, NULL); | |
297 | temp_type_p = (struct type **) xmalloc (sizeof (struct type *)); | |
298 | *temp_type_p = temp_type; | |
299 | return temp_type_p; | |
300 | } | |
301 | ||
302 | f = HEADER_FILES (current_objfile) + real_filenum; | |
303 | ||
304 | f_orig_length = f->length; | |
305 | if (index >= f_orig_length) | |
306 | { | |
307 | while (index >= f->length) | |
308 | { | |
309 | f->length *= 2; | |
310 | } | |
311 | f->vector = (struct type **) | |
312 | xrealloc ((char *) f->vector, f->length * sizeof (struct type *)); | |
313 | memset (&f->vector[f_orig_length], 0, | |
314 | (f->length - f_orig_length) * sizeof (struct type *)); | |
315 | } | |
316 | return (&f->vector[index]); | |
317 | } | |
318 | } | |
319 | ||
320 | /* Make sure there is a type allocated for type numbers TYPENUMS | |
321 | and return the type object. | |
322 | This can create an empty (zeroed) type object. | |
323 | TYPENUMS may be (-1, -1) to return a new type object that is not | |
324 | put into the type vector, and so may not be referred to by number. */ | |
325 | ||
326 | static struct type * | |
35a2f538 | 327 | dbx_alloc_type (int typenums[2], struct objfile *objfile) |
c906108c | 328 | { |
52f0bd74 | 329 | struct type **type_addr; |
c906108c SS |
330 | |
331 | if (typenums[0] == -1) | |
332 | { | |
333 | return (alloc_type (objfile)); | |
334 | } | |
335 | ||
336 | type_addr = dbx_lookup_type (typenums); | |
337 | ||
338 | /* If we are referring to a type not known at all yet, | |
339 | allocate an empty type for it. | |
340 | We will fill it in later if we find out how. */ | |
341 | if (*type_addr == 0) | |
342 | { | |
343 | *type_addr = alloc_type (objfile); | |
344 | } | |
345 | ||
346 | return (*type_addr); | |
347 | } | |
348 | ||
349 | /* for all the stabs in a given stab vector, build appropriate types | |
350 | and fix their symbols in given symbol vector. */ | |
351 | ||
352 | static void | |
fba45db2 KB |
353 | patch_block_stabs (struct pending *symbols, struct pending_stabs *stabs, |
354 | struct objfile *objfile) | |
c906108c SS |
355 | { |
356 | int ii; | |
357 | char *name; | |
358 | char *pp; | |
359 | struct symbol *sym; | |
360 | ||
361 | if (stabs) | |
362 | { | |
c5aa993b | 363 | |
c906108c | 364 | /* for all the stab entries, find their corresponding symbols and |
c5aa993b JM |
365 | patch their types! */ |
366 | ||
c906108c SS |
367 | for (ii = 0; ii < stabs->count; ++ii) |
368 | { | |
369 | name = stabs->stab[ii]; | |
c5aa993b | 370 | pp = (char *) strchr (name, ':'); |
c906108c SS |
371 | while (pp[1] == ':') |
372 | { | |
c5aa993b JM |
373 | pp += 2; |
374 | pp = (char *) strchr (pp, ':'); | |
c906108c | 375 | } |
c5aa993b | 376 | sym = find_symbol_in_list (symbols, name, pp - name); |
c906108c SS |
377 | if (!sym) |
378 | { | |
379 | /* FIXME-maybe: it would be nice if we noticed whether | |
c5aa993b JM |
380 | the variable was defined *anywhere*, not just whether |
381 | it is defined in this compilation unit. But neither | |
382 | xlc or GCC seem to need such a definition, and until | |
383 | we do psymtabs (so that the minimal symbols from all | |
384 | compilation units are available now), I'm not sure | |
385 | how to get the information. */ | |
c906108c SS |
386 | |
387 | /* On xcoff, if a global is defined and never referenced, | |
c5aa993b JM |
388 | ld will remove it from the executable. There is then |
389 | a N_GSYM stab for it, but no regular (C_EXT) symbol. */ | |
c906108c SS |
390 | sym = (struct symbol *) |
391 | obstack_alloc (&objfile->symbol_obstack, | |
392 | sizeof (struct symbol)); | |
393 | ||
394 | memset (sym, 0, sizeof (struct symbol)); | |
176620f1 | 395 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c | 396 | SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT; |
22abf04a | 397 | DEPRECATED_SYMBOL_NAME (sym) = |
c906108c SS |
398 | obsavestring (name, pp - name, &objfile->symbol_obstack); |
399 | pp += 2; | |
c5aa993b | 400 | if (*(pp - 1) == 'F' || *(pp - 1) == 'f') |
c906108c SS |
401 | { |
402 | /* I don't think the linker does this with functions, | |
403 | so as far as I know this is never executed. | |
404 | But it doesn't hurt to check. */ | |
405 | SYMBOL_TYPE (sym) = | |
406 | lookup_function_type (read_type (&pp, objfile)); | |
407 | } | |
408 | else | |
409 | { | |
410 | SYMBOL_TYPE (sym) = read_type (&pp, objfile); | |
411 | } | |
412 | add_symbol_to_list (sym, &global_symbols); | |
413 | } | |
414 | else | |
415 | { | |
416 | pp += 2; | |
c5aa993b | 417 | if (*(pp - 1) == 'F' || *(pp - 1) == 'f') |
c906108c SS |
418 | { |
419 | SYMBOL_TYPE (sym) = | |
420 | lookup_function_type (read_type (&pp, objfile)); | |
421 | } | |
422 | else | |
423 | { | |
424 | SYMBOL_TYPE (sym) = read_type (&pp, objfile); | |
425 | } | |
426 | } | |
427 | } | |
428 | } | |
429 | } | |
c906108c | 430 | \f |
c5aa993b | 431 | |
c906108c SS |
432 | /* Read a number by which a type is referred to in dbx data, |
433 | or perhaps read a pair (FILENUM, TYPENUM) in parentheses. | |
434 | Just a single number N is equivalent to (0,N). | |
435 | Return the two numbers by storing them in the vector TYPENUMS. | |
436 | TYPENUMS will then be used as an argument to dbx_lookup_type. | |
437 | ||
438 | Returns 0 for success, -1 for error. */ | |
439 | ||
440 | static int | |
aa1ee363 | 441 | read_type_number (char **pp, int *typenums) |
c906108c SS |
442 | { |
443 | int nbits; | |
444 | if (**pp == '(') | |
445 | { | |
446 | (*pp)++; | |
447 | typenums[0] = read_huge_number (pp, ',', &nbits); | |
c5aa993b JM |
448 | if (nbits != 0) |
449 | return -1; | |
c906108c | 450 | typenums[1] = read_huge_number (pp, ')', &nbits); |
c5aa993b JM |
451 | if (nbits != 0) |
452 | return -1; | |
c906108c SS |
453 | } |
454 | else | |
455 | { | |
456 | typenums[0] = 0; | |
457 | typenums[1] = read_huge_number (pp, 0, &nbits); | |
c5aa993b JM |
458 | if (nbits != 0) |
459 | return -1; | |
c906108c SS |
460 | } |
461 | return 0; | |
462 | } | |
c906108c | 463 | \f |
c5aa993b | 464 | |
c906108c SS |
465 | #define VISIBILITY_PRIVATE '0' /* Stabs character for private field */ |
466 | #define VISIBILITY_PROTECTED '1' /* Stabs character for protected fld */ | |
467 | #define VISIBILITY_PUBLIC '2' /* Stabs character for public field */ | |
468 | #define VISIBILITY_IGNORE '9' /* Optimized out or zero length */ | |
469 | ||
c906108c SS |
470 | /* Structure for storing pointers to reference definitions for fast lookup |
471 | during "process_later". */ | |
472 | ||
473 | struct ref_map | |
474 | { | |
475 | char *stabs; | |
476 | CORE_ADDR value; | |
477 | struct symbol *sym; | |
478 | }; | |
479 | ||
480 | #define MAX_CHUNK_REFS 100 | |
481 | #define REF_CHUNK_SIZE (MAX_CHUNK_REFS * sizeof (struct ref_map)) | |
482 | #define REF_MAP_SIZE(ref_chunk) ((ref_chunk) * REF_CHUNK_SIZE) | |
483 | ||
c5aa993b | 484 | static struct ref_map *ref_map; |
c906108c SS |
485 | |
486 | /* Ptr to free cell in chunk's linked list. */ | |
c5aa993b | 487 | static int ref_count = 0; |
c906108c SS |
488 | |
489 | /* Number of chunks malloced. */ | |
490 | static int ref_chunk = 0; | |
491 | ||
7be570e7 JM |
492 | /* This file maintains a cache of stabs aliases found in the symbol |
493 | table. If the symbol table changes, this cache must be cleared | |
494 | or we are left holding onto data in invalid obstacks. */ | |
495 | void | |
fba45db2 | 496 | stabsread_clear_cache (void) |
7be570e7 JM |
497 | { |
498 | ref_count = 0; | |
499 | ref_chunk = 0; | |
500 | } | |
501 | ||
c906108c SS |
502 | /* Create array of pointers mapping refids to symbols and stab strings. |
503 | Add pointers to reference definition symbols and/or their values as we | |
504 | find them, using their reference numbers as our index. | |
505 | These will be used later when we resolve references. */ | |
506 | void | |
fba45db2 | 507 | ref_add (int refnum, struct symbol *sym, char *stabs, CORE_ADDR value) |
c906108c SS |
508 | { |
509 | if (ref_count == 0) | |
510 | ref_chunk = 0; | |
511 | if (refnum >= ref_count) | |
512 | ref_count = refnum + 1; | |
513 | if (ref_count > ref_chunk * MAX_CHUNK_REFS) | |
514 | { | |
c5aa993b | 515 | int new_slots = ref_count - ref_chunk * MAX_CHUNK_REFS; |
c906108c SS |
516 | int new_chunks = new_slots / MAX_CHUNK_REFS + 1; |
517 | ref_map = (struct ref_map *) | |
518 | xrealloc (ref_map, REF_MAP_SIZE (ref_chunk + new_chunks)); | |
519 | memset (ref_map + ref_chunk * MAX_CHUNK_REFS, 0, new_chunks * REF_CHUNK_SIZE); | |
520 | ref_chunk += new_chunks; | |
521 | } | |
522 | ref_map[refnum].stabs = stabs; | |
523 | ref_map[refnum].sym = sym; | |
524 | ref_map[refnum].value = value; | |
525 | } | |
526 | ||
527 | /* Return defined sym for the reference REFNUM. */ | |
528 | struct symbol * | |
fba45db2 | 529 | ref_search (int refnum) |
c906108c SS |
530 | { |
531 | if (refnum < 0 || refnum > ref_count) | |
532 | return 0; | |
533 | return ref_map[refnum].sym; | |
534 | } | |
535 | ||
536 | /* Return value for the reference REFNUM. */ | |
537 | ||
538 | static CORE_ADDR | |
fba45db2 | 539 | ref_search_value (int refnum) |
c906108c SS |
540 | { |
541 | if (refnum < 0 || refnum > ref_count) | |
542 | return 0; | |
543 | return ref_map[refnum].value; | |
544 | } | |
c5aa993b | 545 | |
c906108c SS |
546 | /* Parse a reference id in STRING and return the resulting |
547 | reference number. Move STRING beyond the reference id. */ | |
548 | ||
c5aa993b | 549 | static int |
fba45db2 | 550 | process_reference (char **string) |
c906108c SS |
551 | { |
552 | char *p; | |
553 | int refnum = 0; | |
554 | ||
c5aa993b JM |
555 | if (**string != '#') |
556 | return 0; | |
557 | ||
c906108c SS |
558 | /* Advance beyond the initial '#'. */ |
559 | p = *string + 1; | |
560 | ||
561 | /* Read number as reference id. */ | |
562 | while (*p && isdigit (*p)) | |
563 | { | |
564 | refnum = refnum * 10 + *p - '0'; | |
565 | p++; | |
566 | } | |
567 | *string = p; | |
568 | return refnum; | |
569 | } | |
570 | ||
571 | /* If STRING defines a reference, store away a pointer to the reference | |
572 | definition for later use. Return the reference number. */ | |
573 | ||
574 | int | |
fba45db2 | 575 | symbol_reference_defined (char **string) |
c906108c SS |
576 | { |
577 | char *p = *string; | |
578 | int refnum = 0; | |
579 | ||
580 | refnum = process_reference (&p); | |
581 | ||
582 | /* Defining symbols end in '=' */ | |
c5aa993b | 583 | if (*p == '=') |
c906108c | 584 | { |
c5aa993b | 585 | /* Symbol is being defined here. */ |
c906108c SS |
586 | *string = p + 1; |
587 | return refnum; | |
588 | } | |
589 | else | |
590 | { | |
591 | /* Must be a reference. Either the symbol has already been defined, | |
592 | or this is a forward reference to it. */ | |
593 | *string = p; | |
594 | return -1; | |
595 | } | |
596 | } | |
597 | ||
c906108c | 598 | struct symbol * |
fba45db2 KB |
599 | define_symbol (CORE_ADDR valu, char *string, int desc, int type, |
600 | struct objfile *objfile) | |
c906108c | 601 | { |
52f0bd74 | 602 | struct symbol *sym; |
7e1d63ec | 603 | char *p = (char *) find_name_end (string); |
c906108c SS |
604 | int deftype; |
605 | int synonym = 0; | |
52f0bd74 | 606 | int i; |
c906108c SS |
607 | |
608 | /* We would like to eliminate nameless symbols, but keep their types. | |
609 | E.g. stab entry ":t10=*2" should produce a type 10, which is a pointer | |
610 | to type 2, but, should not create a symbol to address that type. Since | |
611 | the symbol will be nameless, there is no way any user can refer to it. */ | |
612 | ||
613 | int nameless; | |
614 | ||
615 | /* Ignore syms with empty names. */ | |
616 | if (string[0] == 0) | |
617 | return 0; | |
618 | ||
619 | /* Ignore old-style symbols from cc -go */ | |
620 | if (p == 0) | |
621 | return 0; | |
622 | ||
623 | while (p[1] == ':') | |
624 | { | |
c5aa993b JM |
625 | p += 2; |
626 | p = strchr (p, ':'); | |
c906108c SS |
627 | } |
628 | ||
629 | /* If a nameless stab entry, all we need is the type, not the symbol. | |
630 | e.g. ":t10=*2" or a nameless enum like " :T16=ered:0,green:1,blue:2,;" */ | |
631 | nameless = (p == string || ((string[0] == ' ') && (string[1] == ':'))); | |
632 | ||
c5aa993b JM |
633 | current_symbol = sym = (struct symbol *) |
634 | obstack_alloc (&objfile->symbol_obstack, sizeof (struct symbol)); | |
c906108c SS |
635 | memset (sym, 0, sizeof (struct symbol)); |
636 | ||
637 | switch (type & N_TYPE) | |
638 | { | |
639 | case N_TEXT: | |
b8fbeb18 | 640 | SYMBOL_SECTION (sym) = SECT_OFF_TEXT (objfile); |
c906108c SS |
641 | break; |
642 | case N_DATA: | |
b8fbeb18 | 643 | SYMBOL_SECTION (sym) = SECT_OFF_DATA (objfile); |
c906108c SS |
644 | break; |
645 | case N_BSS: | |
b8fbeb18 | 646 | SYMBOL_SECTION (sym) = SECT_OFF_BSS (objfile); |
c906108c SS |
647 | break; |
648 | } | |
649 | ||
650 | if (processing_gcc_compilation) | |
651 | { | |
652 | /* GCC 2.x puts the line number in desc. SunOS apparently puts in the | |
c5aa993b JM |
653 | number of bytes occupied by a type or object, which we ignore. */ |
654 | SYMBOL_LINE (sym) = desc; | |
c906108c SS |
655 | } |
656 | else | |
657 | { | |
c5aa993b | 658 | SYMBOL_LINE (sym) = 0; /* unknown */ |
c906108c SS |
659 | } |
660 | ||
661 | if (is_cplus_marker (string[0])) | |
662 | { | |
663 | /* Special GNU C++ names. */ | |
664 | switch (string[1]) | |
665 | { | |
c5aa993b | 666 | case 't': |
22abf04a | 667 | DEPRECATED_SYMBOL_NAME (sym) = obsavestring ("this", strlen ("this"), |
c5aa993b JM |
668 | &objfile->symbol_obstack); |
669 | break; | |
c906108c | 670 | |
c5aa993b | 671 | case 'v': /* $vtbl_ptr_type */ |
22abf04a | 672 | /* Was: DEPRECATED_SYMBOL_NAME (sym) = "vptr"; */ |
c5aa993b | 673 | goto normal; |
c906108c | 674 | |
c5aa993b | 675 | case 'e': |
22abf04a | 676 | DEPRECATED_SYMBOL_NAME (sym) = obsavestring ("eh_throw", strlen ("eh_throw"), |
c5aa993b JM |
677 | &objfile->symbol_obstack); |
678 | break; | |
c906108c | 679 | |
c5aa993b JM |
680 | case '_': |
681 | /* This was an anonymous type that was never fixed up. */ | |
682 | goto normal; | |
c906108c SS |
683 | |
684 | #ifdef STATIC_TRANSFORM_NAME | |
c5aa993b JM |
685 | case 'X': |
686 | /* SunPRO (3.0 at least) static variable encoding. */ | |
687 | goto normal; | |
c906108c SS |
688 | #endif |
689 | ||
c5aa993b | 690 | default: |
23136709 KB |
691 | complaint (&symfile_complaints, "Unknown C++ symbol name `%s'", |
692 | string); | |
c5aa993b | 693 | goto normal; /* Do *something* with it */ |
c906108c SS |
694 | } |
695 | } | |
c906108c SS |
696 | else |
697 | { | |
698 | normal: | |
c5aa993b | 699 | SYMBOL_LANGUAGE (sym) = current_subfile->language; |
2de7ced7 | 700 | SYMBOL_SET_NAMES (sym, string, p - string, objfile); |
c906108c SS |
701 | } |
702 | p++; | |
703 | ||
704 | /* Determine the type of name being defined. */ | |
705 | #if 0 | |
706 | /* Getting GDB to correctly skip the symbol on an undefined symbol | |
707 | descriptor and not ever dump core is a very dodgy proposition if | |
708 | we do things this way. I say the acorn RISC machine can just | |
709 | fix their compiler. */ | |
710 | /* The Acorn RISC machine's compiler can put out locals that don't | |
711 | start with "234=" or "(3,4)=", so assume anything other than the | |
712 | deftypes we know how to handle is a local. */ | |
713 | if (!strchr ("cfFGpPrStTvVXCR", *p)) | |
714 | #else | |
715 | if (isdigit (*p) || *p == '(' || *p == '-') | |
716 | #endif | |
717 | deftype = 'l'; | |
718 | else | |
719 | deftype = *p++; | |
720 | ||
721 | switch (deftype) | |
722 | { | |
723 | case 'c': | |
724 | /* c is a special case, not followed by a type-number. | |
c5aa993b JM |
725 | SYMBOL:c=iVALUE for an integer constant symbol. |
726 | SYMBOL:c=rVALUE for a floating constant symbol. | |
727 | SYMBOL:c=eTYPE,INTVALUE for an enum constant symbol. | |
728 | e.g. "b:c=e6,0" for "const b = blob1" | |
729 | (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */ | |
c906108c SS |
730 | if (*p != '=') |
731 | { | |
732 | SYMBOL_CLASS (sym) = LOC_CONST; | |
733 | SYMBOL_TYPE (sym) = error_type (&p, objfile); | |
176620f1 | 734 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
735 | add_symbol_to_list (sym, &file_symbols); |
736 | return sym; | |
737 | } | |
738 | ++p; | |
739 | switch (*p++) | |
740 | { | |
741 | case 'r': | |
742 | { | |
743 | double d = atof (p); | |
744 | char *dbl_valu; | |
745 | ||
746 | /* FIXME-if-picky-about-floating-accuracy: Should be using | |
747 | target arithmetic to get the value. real.c in GCC | |
748 | probably has the necessary code. */ | |
749 | ||
750 | /* FIXME: lookup_fundamental_type is a hack. We should be | |
751 | creating a type especially for the type of float constants. | |
752 | Problem is, what type should it be? | |
753 | ||
754 | Also, what should the name of this type be? Should we | |
755 | be using 'S' constants (see stabs.texinfo) instead? */ | |
756 | ||
757 | SYMBOL_TYPE (sym) = lookup_fundamental_type (objfile, | |
758 | FT_DBL_PREC_FLOAT); | |
759 | dbl_valu = (char *) | |
c5aa993b | 760 | obstack_alloc (&objfile->symbol_obstack, |
c906108c | 761 | TYPE_LENGTH (SYMBOL_TYPE (sym))); |
96d2f608 | 762 | store_typed_floating (dbl_valu, SYMBOL_TYPE (sym), d); |
c906108c SS |
763 | SYMBOL_VALUE_BYTES (sym) = dbl_valu; |
764 | SYMBOL_CLASS (sym) = LOC_CONST_BYTES; | |
765 | } | |
766 | break; | |
767 | case 'i': | |
768 | { | |
769 | /* Defining integer constants this way is kind of silly, | |
770 | since 'e' constants allows the compiler to give not | |
771 | only the value, but the type as well. C has at least | |
772 | int, long, unsigned int, and long long as constant | |
773 | types; other languages probably should have at least | |
774 | unsigned as well as signed constants. */ | |
775 | ||
776 | /* We just need one int constant type for all objfiles. | |
777 | It doesn't depend on languages or anything (arguably its | |
778 | name should be a language-specific name for a type of | |
779 | that size, but I'm inclined to say that if the compiler | |
780 | wants a nice name for the type, it can use 'e'). */ | |
781 | static struct type *int_const_type; | |
782 | ||
783 | /* Yes, this is as long as a *host* int. That is because we | |
784 | use atoi. */ | |
785 | if (int_const_type == NULL) | |
786 | int_const_type = | |
787 | init_type (TYPE_CODE_INT, | |
788 | sizeof (int) * HOST_CHAR_BIT / TARGET_CHAR_BIT, 0, | |
789 | "integer constant", | |
c5aa993b | 790 | (struct objfile *) NULL); |
c906108c SS |
791 | SYMBOL_TYPE (sym) = int_const_type; |
792 | SYMBOL_VALUE (sym) = atoi (p); | |
793 | SYMBOL_CLASS (sym) = LOC_CONST; | |
794 | } | |
795 | break; | |
796 | case 'e': | |
797 | /* SYMBOL:c=eTYPE,INTVALUE for a constant symbol whose value | |
798 | can be represented as integral. | |
799 | e.g. "b:c=e6,0" for "const b = blob1" | |
800 | (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */ | |
801 | { | |
802 | SYMBOL_CLASS (sym) = LOC_CONST; | |
803 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
804 | ||
805 | if (*p != ',') | |
806 | { | |
807 | SYMBOL_TYPE (sym) = error_type (&p, objfile); | |
808 | break; | |
809 | } | |
810 | ++p; | |
811 | ||
812 | /* If the value is too big to fit in an int (perhaps because | |
813 | it is unsigned), or something like that, we silently get | |
814 | a bogus value. The type and everything else about it is | |
815 | correct. Ideally, we should be using whatever we have | |
816 | available for parsing unsigned and long long values, | |
817 | however. */ | |
818 | SYMBOL_VALUE (sym) = atoi (p); | |
819 | } | |
820 | break; | |
821 | default: | |
822 | { | |
823 | SYMBOL_CLASS (sym) = LOC_CONST; | |
824 | SYMBOL_TYPE (sym) = error_type (&p, objfile); | |
825 | } | |
826 | } | |
176620f1 | 827 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
828 | add_symbol_to_list (sym, &file_symbols); |
829 | return sym; | |
830 | ||
831 | case 'C': | |
832 | /* The name of a caught exception. */ | |
833 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
834 | SYMBOL_CLASS (sym) = LOC_LABEL; | |
176620f1 | 835 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
836 | SYMBOL_VALUE_ADDRESS (sym) = valu; |
837 | add_symbol_to_list (sym, &local_symbols); | |
838 | break; | |
839 | ||
840 | case 'f': | |
841 | /* A static function definition. */ | |
842 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
843 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
176620f1 | 844 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
845 | add_symbol_to_list (sym, &file_symbols); |
846 | /* fall into process_function_types. */ | |
847 | ||
848 | process_function_types: | |
849 | /* Function result types are described as the result type in stabs. | |
c5aa993b JM |
850 | We need to convert this to the function-returning-type-X type |
851 | in GDB. E.g. "int" is converted to "function returning int". */ | |
c906108c SS |
852 | if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_FUNC) |
853 | SYMBOL_TYPE (sym) = lookup_function_type (SYMBOL_TYPE (sym)); | |
854 | ||
1e698235 DJ |
855 | /* All functions in C++ have prototypes. Stabs does not offer an |
856 | explicit way to identify prototyped or unprototyped functions, | |
857 | but both GCC and Sun CC emit stabs for the "call-as" type rather | |
858 | than the "declared-as" type for unprototyped functions, so | |
859 | we treat all functions as if they were prototyped. This is used | |
860 | primarily for promotion when calling the function from GDB. */ | |
861 | TYPE_FLAGS (SYMBOL_TYPE (sym)) |= TYPE_FLAG_PROTOTYPED; | |
c906108c SS |
862 | |
863 | /* fall into process_prototype_types */ | |
864 | ||
865 | process_prototype_types: | |
866 | /* Sun acc puts declared types of arguments here. */ | |
867 | if (*p == ';') | |
868 | { | |
869 | struct type *ftype = SYMBOL_TYPE (sym); | |
870 | int nsemi = 0; | |
871 | int nparams = 0; | |
872 | char *p1 = p; | |
873 | ||
874 | /* Obtain a worst case guess for the number of arguments | |
875 | by counting the semicolons. */ | |
876 | while (*p1) | |
877 | { | |
878 | if (*p1++ == ';') | |
879 | nsemi++; | |
880 | } | |
881 | ||
882 | /* Allocate parameter information fields and fill them in. */ | |
883 | TYPE_FIELDS (ftype) = (struct field *) | |
884 | TYPE_ALLOC (ftype, nsemi * sizeof (struct field)); | |
885 | while (*p++ == ';') | |
886 | { | |
887 | struct type *ptype; | |
888 | ||
889 | /* A type number of zero indicates the start of varargs. | |
c5aa993b | 890 | FIXME: GDB currently ignores vararg functions. */ |
c906108c SS |
891 | if (p[0] == '0' && p[1] == '\0') |
892 | break; | |
893 | ptype = read_type (&p, objfile); | |
894 | ||
895 | /* The Sun compilers mark integer arguments, which should | |
c5aa993b JM |
896 | be promoted to the width of the calling conventions, with |
897 | a type which references itself. This type is turned into | |
898 | a TYPE_CODE_VOID type by read_type, and we have to turn | |
899 | it back into builtin_type_int here. | |
900 | FIXME: Do we need a new builtin_type_promoted_int_arg ? */ | |
c906108c SS |
901 | if (TYPE_CODE (ptype) == TYPE_CODE_VOID) |
902 | ptype = builtin_type_int; | |
8176bb6d DJ |
903 | TYPE_FIELD_TYPE (ftype, nparams) = ptype; |
904 | TYPE_FIELD_ARTIFICIAL (ftype, nparams++) = 0; | |
c906108c SS |
905 | } |
906 | TYPE_NFIELDS (ftype) = nparams; | |
907 | TYPE_FLAGS (ftype) |= TYPE_FLAG_PROTOTYPED; | |
908 | } | |
909 | break; | |
910 | ||
911 | case 'F': | |
912 | /* A global function definition. */ | |
913 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
914 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
176620f1 | 915 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
916 | add_symbol_to_list (sym, &global_symbols); |
917 | goto process_function_types; | |
918 | ||
919 | case 'G': | |
920 | /* For a class G (global) symbol, it appears that the | |
c5aa993b JM |
921 | value is not correct. It is necessary to search for the |
922 | corresponding linker definition to find the value. | |
923 | These definitions appear at the end of the namelist. */ | |
c906108c SS |
924 | SYMBOL_TYPE (sym) = read_type (&p, objfile); |
925 | SYMBOL_CLASS (sym) = LOC_STATIC; | |
176620f1 | 926 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c | 927 | /* Don't add symbol references to global_sym_chain. |
c5aa993b JM |
928 | Symbol references don't have valid names and wont't match up with |
929 | minimal symbols when the global_sym_chain is relocated. | |
930 | We'll fixup symbol references when we fixup the defining symbol. */ | |
22abf04a | 931 | if (DEPRECATED_SYMBOL_NAME (sym) && DEPRECATED_SYMBOL_NAME (sym)[0] != '#') |
c906108c | 932 | { |
22abf04a | 933 | i = hashname (DEPRECATED_SYMBOL_NAME (sym)); |
c5aa993b JM |
934 | SYMBOL_VALUE_CHAIN (sym) = global_sym_chain[i]; |
935 | global_sym_chain[i] = sym; | |
c906108c SS |
936 | } |
937 | add_symbol_to_list (sym, &global_symbols); | |
938 | break; | |
939 | ||
940 | /* This case is faked by a conditional above, | |
c5aa993b JM |
941 | when there is no code letter in the dbx data. |
942 | Dbx data never actually contains 'l'. */ | |
c906108c SS |
943 | case 's': |
944 | case 'l': | |
945 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
946 | SYMBOL_CLASS (sym) = LOC_LOCAL; | |
947 | SYMBOL_VALUE (sym) = valu; | |
176620f1 | 948 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
949 | add_symbol_to_list (sym, &local_symbols); |
950 | break; | |
951 | ||
952 | case 'p': | |
953 | if (*p == 'F') | |
954 | /* pF is a two-letter code that means a function parameter in Fortran. | |
955 | The type-number specifies the type of the return value. | |
956 | Translate it into a pointer-to-function type. */ | |
957 | { | |
958 | p++; | |
959 | SYMBOL_TYPE (sym) | |
960 | = lookup_pointer_type | |
c5aa993b | 961 | (lookup_function_type (read_type (&p, objfile))); |
c906108c SS |
962 | } |
963 | else | |
964 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
965 | ||
7ca9f392 | 966 | SYMBOL_CLASS (sym) = LOC_ARG; |
c906108c | 967 | SYMBOL_VALUE (sym) = valu; |
176620f1 | 968 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
969 | add_symbol_to_list (sym, &local_symbols); |
970 | ||
d7449b42 | 971 | if (TARGET_BYTE_ORDER != BFD_ENDIAN_BIG) |
c906108c SS |
972 | { |
973 | /* On little-endian machines, this crud is never necessary, | |
974 | and, if the extra bytes contain garbage, is harmful. */ | |
975 | break; | |
976 | } | |
977 | ||
978 | /* If it's gcc-compiled, if it says `short', believe it. */ | |
979 | if (processing_gcc_compilation || BELIEVE_PCC_PROMOTION) | |
980 | break; | |
981 | ||
7a292a7a SS |
982 | if (!BELIEVE_PCC_PROMOTION) |
983 | { | |
984 | /* This is the signed type which arguments get promoted to. */ | |
985 | static struct type *pcc_promotion_type; | |
986 | /* This is the unsigned type which arguments get promoted to. */ | |
987 | static struct type *pcc_unsigned_promotion_type; | |
c5aa993b | 988 | |
7a292a7a SS |
989 | /* Call it "int" because this is mainly C lossage. */ |
990 | if (pcc_promotion_type == NULL) | |
991 | pcc_promotion_type = | |
992 | init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT, | |
993 | 0, "int", NULL); | |
c5aa993b | 994 | |
7a292a7a SS |
995 | if (pcc_unsigned_promotion_type == NULL) |
996 | pcc_unsigned_promotion_type = | |
997 | init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT, | |
998 | TYPE_FLAG_UNSIGNED, "unsigned int", NULL); | |
c5aa993b | 999 | |
7a292a7a SS |
1000 | if (BELIEVE_PCC_PROMOTION_TYPE) |
1001 | { | |
1002 | /* This is defined on machines (e.g. sparc) where we | |
c5aa993b JM |
1003 | should believe the type of a PCC 'short' argument, |
1004 | but shouldn't believe the address (the address is the | |
1005 | address of the corresponding int). | |
1006 | ||
1007 | My guess is that this correction, as opposed to | |
1008 | changing the parameter to an 'int' (as done below, | |
1009 | for PCC on most machines), is the right thing to do | |
1010 | on all machines, but I don't want to risk breaking | |
1011 | something that already works. On most PCC machines, | |
1012 | the sparc problem doesn't come up because the calling | |
1013 | function has to zero the top bytes (not knowing | |
1014 | whether the called function wants an int or a short), | |
1015 | so there is little practical difference between an | |
1016 | int and a short (except perhaps what happens when the | |
1017 | GDB user types "print short_arg = 0x10000;"). | |
1018 | ||
1019 | Hacked for SunOS 4.1 by gnu@cygnus.com. In 4.1, the | |
1020 | compiler actually produces the correct address (we | |
1021 | don't need to fix it up). I made this code adapt so | |
1022 | that it will offset the symbol if it was pointing at | |
1023 | an int-aligned location and not otherwise. This way | |
1024 | you can use the same gdb for 4.0.x and 4.1 systems. | |
1025 | ||
1026 | If the parameter is shorter than an int, and is | |
1027 | integral (e.g. char, short, or unsigned equivalent), | |
1028 | and is claimed to be passed on an integer boundary, | |
1029 | don't believe it! Offset the parameter's address to | |
1030 | the tail-end of that integer. */ | |
1031 | ||
7a292a7a SS |
1032 | if (TYPE_LENGTH (SYMBOL_TYPE (sym)) < TYPE_LENGTH (pcc_promotion_type) |
1033 | && TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_INT | |
c5aa993b | 1034 | && 0 == SYMBOL_VALUE (sym) % TYPE_LENGTH (pcc_promotion_type)) |
7a292a7a SS |
1035 | { |
1036 | SYMBOL_VALUE (sym) += TYPE_LENGTH (pcc_promotion_type) | |
1037 | - TYPE_LENGTH (SYMBOL_TYPE (sym)); | |
1038 | } | |
1039 | break; | |
1040 | } | |
1041 | else | |
1042 | { | |
1043 | /* If PCC says a parameter is a short or a char, | |
c5aa993b | 1044 | it is really an int. */ |
7a292a7a SS |
1045 | if (TYPE_LENGTH (SYMBOL_TYPE (sym)) < TYPE_LENGTH (pcc_promotion_type) |
1046 | && TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_INT) | |
1047 | { | |
1048 | SYMBOL_TYPE (sym) = | |
1049 | TYPE_UNSIGNED (SYMBOL_TYPE (sym)) | |
1050 | ? pcc_unsigned_promotion_type | |
1051 | : pcc_promotion_type; | |
1052 | } | |
1053 | break; | |
1054 | } | |
1055 | } | |
c906108c SS |
1056 | |
1057 | case 'P': | |
1058 | /* acc seems to use P to declare the prototypes of functions that | |
1059 | are referenced by this file. gdb is not prepared to deal | |
1060 | with this extra information. FIXME, it ought to. */ | |
1061 | if (type == N_FUN) | |
1062 | { | |
1063 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
1064 | goto process_prototype_types; | |
1065 | } | |
c5aa993b | 1066 | /*FALLTHROUGH */ |
c906108c SS |
1067 | |
1068 | case 'R': | |
1069 | /* Parameter which is in a register. */ | |
1070 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
1071 | SYMBOL_CLASS (sym) = LOC_REGPARM; | |
1072 | SYMBOL_VALUE (sym) = STAB_REG_TO_REGNUM (valu); | |
64485362 | 1073 | if (SYMBOL_VALUE (sym) >= NUM_REGS + NUM_PSEUDO_REGS) |
c906108c | 1074 | { |
23136709 KB |
1075 | reg_value_complaint (SYMBOL_VALUE (sym), |
1076 | NUM_REGS + NUM_PSEUDO_REGS, | |
de5ad195 | 1077 | SYMBOL_PRINT_NAME (sym)); |
c5aa993b | 1078 | SYMBOL_VALUE (sym) = SP_REGNUM; /* Known safe, though useless */ |
c906108c | 1079 | } |
176620f1 | 1080 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1081 | add_symbol_to_list (sym, &local_symbols); |
1082 | break; | |
1083 | ||
1084 | case 'r': | |
1085 | /* Register variable (either global or local). */ | |
1086 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
1087 | SYMBOL_CLASS (sym) = LOC_REGISTER; | |
1088 | SYMBOL_VALUE (sym) = STAB_REG_TO_REGNUM (valu); | |
64485362 | 1089 | if (SYMBOL_VALUE (sym) >= NUM_REGS + NUM_PSEUDO_REGS) |
c906108c | 1090 | { |
23136709 KB |
1091 | reg_value_complaint (SYMBOL_VALUE (sym), |
1092 | NUM_REGS + NUM_PSEUDO_REGS, | |
de5ad195 | 1093 | SYMBOL_PRINT_NAME (sym)); |
c5aa993b | 1094 | SYMBOL_VALUE (sym) = SP_REGNUM; /* Known safe, though useless */ |
c906108c | 1095 | } |
176620f1 | 1096 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1097 | if (within_function) |
1098 | { | |
192cb3d4 MK |
1099 | /* Sun cc uses a pair of symbols, one 'p' and one 'r', with |
1100 | the same name to represent an argument passed in a | |
1101 | register. GCC uses 'P' for the same case. So if we find | |
1102 | such a symbol pair we combine it into one 'P' symbol. | |
1103 | For Sun cc we need to do this regardless of | |
1104 | stabs_argument_has_addr, because the compiler puts out | |
1105 | the 'p' symbol even if it never saves the argument onto | |
1106 | the stack. | |
1107 | ||
1108 | On most machines, we want to preserve both symbols, so | |
1109 | that we can still get information about what is going on | |
1110 | with the stack (VAX for computing args_printed, using | |
1111 | stack slots instead of saved registers in backtraces, | |
1112 | etc.). | |
c906108c SS |
1113 | |
1114 | Note that this code illegally combines | |
c5aa993b | 1115 | main(argc) struct foo argc; { register struct foo argc; } |
c906108c SS |
1116 | but this case is considered pathological and causes a warning |
1117 | from a decent compiler. */ | |
1118 | ||
1119 | if (local_symbols | |
1120 | && local_symbols->nsyms > 0 | |
5e044b1e AC |
1121 | #ifndef DEPRECATED_USE_REGISTER_NOT_ARG |
1122 | /* DEPRECATED_USE_REGISTER_NOT_ARG is only defined by | |
1123 | the SPARC. */ | |
192cb3d4 MK |
1124 | && gdbarch_stabs_argument_has_addr (current_gdbarch, |
1125 | SYMBOL_TYPE (sym)) | |
c906108c | 1126 | #endif |
c5aa993b | 1127 | ) |
c906108c SS |
1128 | { |
1129 | struct symbol *prev_sym; | |
1130 | prev_sym = local_symbols->symbol[local_symbols->nsyms - 1]; | |
1131 | if ((SYMBOL_CLASS (prev_sym) == LOC_REF_ARG | |
1132 | || SYMBOL_CLASS (prev_sym) == LOC_ARG) | |
6314a349 AC |
1133 | && strcmp (DEPRECATED_SYMBOL_NAME (prev_sym), |
1134 | DEPRECATED_SYMBOL_NAME (sym)) == 0) | |
c906108c SS |
1135 | { |
1136 | SYMBOL_CLASS (prev_sym) = LOC_REGPARM; | |
1137 | /* Use the type from the LOC_REGISTER; that is the type | |
1138 | that is actually in that register. */ | |
1139 | SYMBOL_TYPE (prev_sym) = SYMBOL_TYPE (sym); | |
1140 | SYMBOL_VALUE (prev_sym) = SYMBOL_VALUE (sym); | |
1141 | sym = prev_sym; | |
1142 | break; | |
1143 | } | |
1144 | } | |
c5aa993b | 1145 | add_symbol_to_list (sym, &local_symbols); |
c906108c SS |
1146 | } |
1147 | else | |
c5aa993b | 1148 | add_symbol_to_list (sym, &file_symbols); |
c906108c SS |
1149 | break; |
1150 | ||
1151 | case 'S': | |
1152 | /* Static symbol at top level of file */ | |
1153 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
1154 | SYMBOL_CLASS (sym) = LOC_STATIC; | |
1155 | SYMBOL_VALUE_ADDRESS (sym) = valu; | |
1156 | #ifdef STATIC_TRANSFORM_NAME | |
22abf04a | 1157 | if (IS_STATIC_TRANSFORM_NAME (DEPRECATED_SYMBOL_NAME (sym))) |
c5aa993b JM |
1158 | { |
1159 | struct minimal_symbol *msym; | |
22abf04a | 1160 | msym = lookup_minimal_symbol (DEPRECATED_SYMBOL_NAME (sym), NULL, objfile); |
c5aa993b JM |
1161 | if (msym != NULL) |
1162 | { | |
22abf04a | 1163 | DEPRECATED_SYMBOL_NAME (sym) = STATIC_TRANSFORM_NAME (DEPRECATED_SYMBOL_NAME (sym)); |
c5aa993b JM |
1164 | SYMBOL_VALUE_ADDRESS (sym) = SYMBOL_VALUE_ADDRESS (msym); |
1165 | } | |
1166 | } | |
c906108c | 1167 | #endif |
176620f1 | 1168 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1169 | add_symbol_to_list (sym, &file_symbols); |
1170 | break; | |
1171 | ||
1172 | case 't': | |
e2cd42dd | 1173 | /* Typedef */ |
c906108c SS |
1174 | SYMBOL_TYPE (sym) = read_type (&p, objfile); |
1175 | ||
1176 | /* For a nameless type, we don't want a create a symbol, thus we | |
c5aa993b JM |
1177 | did not use `sym'. Return without further processing. */ |
1178 | if (nameless) | |
1179 | return NULL; | |
c906108c SS |
1180 | |
1181 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
1182 | SYMBOL_VALUE (sym) = valu; | |
176620f1 | 1183 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c | 1184 | /* C++ vagaries: we may have a type which is derived from |
c5aa993b JM |
1185 | a base type which did not have its name defined when the |
1186 | derived class was output. We fill in the derived class's | |
1187 | base part member's name here in that case. */ | |
c906108c SS |
1188 | if (TYPE_NAME (SYMBOL_TYPE (sym)) != NULL) |
1189 | if ((TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_STRUCT | |
1190 | || TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_UNION) | |
1191 | && TYPE_N_BASECLASSES (SYMBOL_TYPE (sym))) | |
1192 | { | |
1193 | int j; | |
1194 | for (j = TYPE_N_BASECLASSES (SYMBOL_TYPE (sym)) - 1; j >= 0; j--) | |
1195 | if (TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym), j) == 0) | |
1196 | TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym), j) = | |
1197 | type_name_no_tag (TYPE_BASECLASS (SYMBOL_TYPE (sym), j)); | |
1198 | } | |
1199 | ||
1200 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == NULL) | |
1201 | { | |
1202 | /* gcc-2.6 or later (when using -fvtable-thunks) | |
1203 | emits a unique named type for a vtable entry. | |
1204 | Some gdb code depends on that specific name. */ | |
1205 | extern const char vtbl_ptr_name[]; | |
1206 | ||
1207 | if ((TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_PTR | |
22abf04a | 1208 | && strcmp (DEPRECATED_SYMBOL_NAME (sym), vtbl_ptr_name)) |
c906108c SS |
1209 | || TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_FUNC) |
1210 | { | |
1211 | /* If we are giving a name to a type such as "pointer to | |
c5aa993b JM |
1212 | foo" or "function returning foo", we better not set |
1213 | the TYPE_NAME. If the program contains "typedef char | |
1214 | *caddr_t;", we don't want all variables of type char | |
1215 | * to print as caddr_t. This is not just a | |
1216 | consequence of GDB's type management; PCC and GCC (at | |
1217 | least through version 2.4) both output variables of | |
1218 | either type char * or caddr_t with the type number | |
1219 | defined in the 't' symbol for caddr_t. If a future | |
1220 | compiler cleans this up it GDB is not ready for it | |
1221 | yet, but if it becomes ready we somehow need to | |
1222 | disable this check (without breaking the PCC/GCC2.4 | |
1223 | case). | |
1224 | ||
1225 | Sigh. | |
1226 | ||
1227 | Fortunately, this check seems not to be necessary | |
1228 | for anything except pointers or functions. */ | |
49d97c60 EZ |
1229 | /* ezannoni: 2000-10-26. This seems to apply for |
1230 | versions of gcc older than 2.8. This was the original | |
1231 | problem: with the following code gdb would tell that | |
1232 | the type for name1 is caddr_t, and func is char() | |
1233 | typedef char *caddr_t; | |
1234 | char *name2; | |
1235 | struct x | |
1236 | { | |
1237 | char *name1; | |
1238 | } xx; | |
1239 | char *func() | |
1240 | { | |
1241 | } | |
1242 | main () {} | |
1243 | */ | |
1244 | ||
1245 | /* Pascal accepts names for pointer types. */ | |
1246 | if (current_subfile->language == language_pascal) | |
1247 | { | |
22abf04a | 1248 | TYPE_NAME (SYMBOL_TYPE (sym)) = DEPRECATED_SYMBOL_NAME (sym); |
49d97c60 | 1249 | } |
c906108c SS |
1250 | } |
1251 | else | |
22abf04a | 1252 | TYPE_NAME (SYMBOL_TYPE (sym)) = DEPRECATED_SYMBOL_NAME (sym); |
c906108c SS |
1253 | } |
1254 | ||
1255 | add_symbol_to_list (sym, &file_symbols); | |
1256 | break; | |
1257 | ||
1258 | case 'T': | |
1259 | /* Struct, union, or enum tag. For GNU C++, this can be be followed | |
c5aa993b | 1260 | by 't' which means we are typedef'ing it as well. */ |
c906108c SS |
1261 | synonym = *p == 't'; |
1262 | ||
1263 | if (synonym) | |
1264 | p++; | |
c906108c SS |
1265 | |
1266 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
25caa7a8 | 1267 | |
c906108c | 1268 | /* For a nameless type, we don't want a create a symbol, thus we |
c5aa993b JM |
1269 | did not use `sym'. Return without further processing. */ |
1270 | if (nameless) | |
1271 | return NULL; | |
c906108c SS |
1272 | |
1273 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
1274 | SYMBOL_VALUE (sym) = valu; | |
176620f1 | 1275 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c SS |
1276 | if (TYPE_TAG_NAME (SYMBOL_TYPE (sym)) == 0) |
1277 | TYPE_TAG_NAME (SYMBOL_TYPE (sym)) | |
22abf04a | 1278 | = obconcat (&objfile->type_obstack, "", "", DEPRECATED_SYMBOL_NAME (sym)); |
c906108c SS |
1279 | add_symbol_to_list (sym, &file_symbols); |
1280 | ||
1281 | if (synonym) | |
1282 | { | |
1283 | /* Clone the sym and then modify it. */ | |
aa1ee363 | 1284 | struct symbol *typedef_sym = (struct symbol *) |
c5aa993b | 1285 | obstack_alloc (&objfile->symbol_obstack, sizeof (struct symbol)); |
c906108c SS |
1286 | *typedef_sym = *sym; |
1287 | SYMBOL_CLASS (typedef_sym) = LOC_TYPEDEF; | |
1288 | SYMBOL_VALUE (typedef_sym) = valu; | |
176620f1 | 1289 | SYMBOL_DOMAIN (typedef_sym) = VAR_DOMAIN; |
c906108c SS |
1290 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) |
1291 | TYPE_NAME (SYMBOL_TYPE (sym)) | |
22abf04a | 1292 | = obconcat (&objfile->type_obstack, "", "", DEPRECATED_SYMBOL_NAME (sym)); |
c906108c SS |
1293 | add_symbol_to_list (typedef_sym, &file_symbols); |
1294 | } | |
1295 | break; | |
1296 | ||
1297 | case 'V': | |
1298 | /* Static symbol of local scope */ | |
1299 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
1300 | SYMBOL_CLASS (sym) = LOC_STATIC; | |
1301 | SYMBOL_VALUE_ADDRESS (sym) = valu; | |
1302 | #ifdef STATIC_TRANSFORM_NAME | |
22abf04a | 1303 | if (IS_STATIC_TRANSFORM_NAME (DEPRECATED_SYMBOL_NAME (sym))) |
c5aa993b JM |
1304 | { |
1305 | struct minimal_symbol *msym; | |
22abf04a | 1306 | msym = lookup_minimal_symbol (DEPRECATED_SYMBOL_NAME (sym), NULL, objfile); |
c5aa993b JM |
1307 | if (msym != NULL) |
1308 | { | |
22abf04a | 1309 | DEPRECATED_SYMBOL_NAME (sym) = STATIC_TRANSFORM_NAME (DEPRECATED_SYMBOL_NAME (sym)); |
c5aa993b JM |
1310 | SYMBOL_VALUE_ADDRESS (sym) = SYMBOL_VALUE_ADDRESS (msym); |
1311 | } | |
1312 | } | |
c906108c | 1313 | #endif |
176620f1 | 1314 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1315 | add_symbol_to_list (sym, &local_symbols); |
1316 | break; | |
1317 | ||
1318 | case 'v': | |
1319 | /* Reference parameter */ | |
1320 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
1321 | SYMBOL_CLASS (sym) = LOC_REF_ARG; | |
1322 | SYMBOL_VALUE (sym) = valu; | |
176620f1 | 1323 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1324 | add_symbol_to_list (sym, &local_symbols); |
1325 | break; | |
1326 | ||
1327 | case 'a': | |
1328 | /* Reference parameter which is in a register. */ | |
1329 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
1330 | SYMBOL_CLASS (sym) = LOC_REGPARM_ADDR; | |
1331 | SYMBOL_VALUE (sym) = STAB_REG_TO_REGNUM (valu); | |
64485362 | 1332 | if (SYMBOL_VALUE (sym) >= NUM_REGS + NUM_PSEUDO_REGS) |
c906108c | 1333 | { |
23136709 KB |
1334 | reg_value_complaint (SYMBOL_VALUE (sym), |
1335 | NUM_REGS + NUM_PSEUDO_REGS, | |
de5ad195 | 1336 | SYMBOL_PRINT_NAME (sym)); |
c5aa993b | 1337 | SYMBOL_VALUE (sym) = SP_REGNUM; /* Known safe, though useless */ |
c906108c | 1338 | } |
176620f1 | 1339 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1340 | add_symbol_to_list (sym, &local_symbols); |
1341 | break; | |
1342 | ||
1343 | case 'X': | |
1344 | /* This is used by Sun FORTRAN for "function result value". | |
c5aa993b JM |
1345 | Sun claims ("dbx and dbxtool interfaces", 2nd ed) |
1346 | that Pascal uses it too, but when I tried it Pascal used | |
1347 | "x:3" (local symbol) instead. */ | |
c906108c SS |
1348 | SYMBOL_TYPE (sym) = read_type (&p, objfile); |
1349 | SYMBOL_CLASS (sym) = LOC_LOCAL; | |
1350 | SYMBOL_VALUE (sym) = valu; | |
176620f1 | 1351 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1352 | add_symbol_to_list (sym, &local_symbols); |
1353 | break; | |
c906108c SS |
1354 | |
1355 | default: | |
1356 | SYMBOL_TYPE (sym) = error_type (&p, objfile); | |
1357 | SYMBOL_CLASS (sym) = LOC_CONST; | |
1358 | SYMBOL_VALUE (sym) = 0; | |
176620f1 | 1359 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1360 | add_symbol_to_list (sym, &file_symbols); |
1361 | break; | |
1362 | } | |
1363 | ||
192cb3d4 MK |
1364 | /* Some systems pass variables of certain types by reference instead |
1365 | of by value, i.e. they will pass the address of a structure (in a | |
1366 | register or on the stack) instead of the structure itself. */ | |
c906108c | 1367 | |
192cb3d4 | 1368 | if (gdbarch_stabs_argument_has_addr (current_gdbarch, SYMBOL_TYPE (sym)) |
d03e67c9 | 1369 | && (SYMBOL_CLASS (sym) == LOC_REGPARM || SYMBOL_CLASS (sym) == LOC_ARG)) |
c906108c | 1370 | { |
192cb3d4 MK |
1371 | /* We have to convert LOC_REGPARM to LOC_REGPARM_ADDR (for |
1372 | variables passed in a register). */ | |
1373 | if (SYMBOL_CLASS (sym) == LOC_REGPARM) | |
1374 | SYMBOL_CLASS (sym) = LOC_REGPARM_ADDR; | |
1375 | /* Likewise for converting LOC_ARG to LOC_REF_ARG (for the 7th | |
1376 | and subsequent arguments on SPARC, for example). */ | |
1377 | else if (SYMBOL_CLASS (sym) == LOC_ARG) | |
1378 | SYMBOL_CLASS (sym) = LOC_REF_ARG; | |
c906108c SS |
1379 | } |
1380 | ||
c906108c SS |
1381 | return sym; |
1382 | } | |
1383 | ||
c906108c SS |
1384 | /* Skip rest of this symbol and return an error type. |
1385 | ||
1386 | General notes on error recovery: error_type always skips to the | |
1387 | end of the symbol (modulo cretinous dbx symbol name continuation). | |
1388 | Thus code like this: | |
1389 | ||
1390 | if (*(*pp)++ != ';') | |
c5aa993b | 1391 | return error_type (pp, objfile); |
c906108c SS |
1392 | |
1393 | is wrong because if *pp starts out pointing at '\0' (typically as the | |
1394 | result of an earlier error), it will be incremented to point to the | |
1395 | start of the next symbol, which might produce strange results, at least | |
1396 | if you run off the end of the string table. Instead use | |
1397 | ||
1398 | if (**pp != ';') | |
c5aa993b | 1399 | return error_type (pp, objfile); |
c906108c SS |
1400 | ++*pp; |
1401 | ||
1402 | or | |
1403 | ||
1404 | if (**pp != ';') | |
c5aa993b | 1405 | foo = error_type (pp, objfile); |
c906108c | 1406 | else |
c5aa993b | 1407 | ++*pp; |
c906108c SS |
1408 | |
1409 | And in case it isn't obvious, the point of all this hair is so the compiler | |
1410 | can define new types and new syntaxes, and old versions of the | |
1411 | debugger will be able to read the new symbol tables. */ | |
1412 | ||
1413 | static struct type * | |
fba45db2 | 1414 | error_type (char **pp, struct objfile *objfile) |
c906108c | 1415 | { |
23136709 | 1416 | complaint (&symfile_complaints, "couldn't parse type; debugger out of date?"); |
c906108c SS |
1417 | while (1) |
1418 | { | |
1419 | /* Skip to end of symbol. */ | |
1420 | while (**pp != '\0') | |
1421 | { | |
1422 | (*pp)++; | |
1423 | } | |
1424 | ||
1425 | /* Check for and handle cretinous dbx symbol name continuation! */ | |
1426 | if ((*pp)[-1] == '\\' || (*pp)[-1] == '?') | |
1427 | { | |
1428 | *pp = next_symbol_text (objfile); | |
1429 | } | |
1430 | else | |
1431 | { | |
1432 | break; | |
1433 | } | |
1434 | } | |
1435 | return (builtin_type_error); | |
1436 | } | |
c906108c | 1437 | \f |
c5aa993b | 1438 | |
c906108c SS |
1439 | /* Read type information or a type definition; return the type. Even |
1440 | though this routine accepts either type information or a type | |
1441 | definition, the distinction is relevant--some parts of stabsread.c | |
1442 | assume that type information starts with a digit, '-', or '(' in | |
1443 | deciding whether to call read_type. */ | |
1444 | ||
a7a48797 | 1445 | static struct type * |
aa1ee363 | 1446 | read_type (char **pp, struct objfile *objfile) |
c906108c | 1447 | { |
52f0bd74 | 1448 | struct type *type = 0; |
c906108c SS |
1449 | struct type *type1; |
1450 | int typenums[2]; | |
1451 | char type_descriptor; | |
1452 | ||
1453 | /* Size in bits of type if specified by a type attribute, or -1 if | |
1454 | there is no size attribute. */ | |
1455 | int type_size = -1; | |
1456 | ||
1457 | /* Used to distinguish string and bitstring from char-array and set. */ | |
1458 | int is_string = 0; | |
1459 | ||
e2cd42dd MS |
1460 | /* Used to distinguish vector from array. */ |
1461 | int is_vector = 0; | |
1462 | ||
c906108c SS |
1463 | /* Read type number if present. The type number may be omitted. |
1464 | for instance in a two-dimensional array declared with type | |
1465 | "ar1;1;10;ar1;1;10;4". */ | |
1466 | if ((**pp >= '0' && **pp <= '9') | |
1467 | || **pp == '(' | |
1468 | || **pp == '-') | |
1469 | { | |
1470 | if (read_type_number (pp, typenums) != 0) | |
1471 | return error_type (pp, objfile); | |
c5aa993b | 1472 | |
c906108c | 1473 | /* Type is not being defined here. Either it already exists, |
c5aa993b JM |
1474 | or this is a forward reference to it. dbx_alloc_type handles |
1475 | both cases. */ | |
c906108c SS |
1476 | if (**pp != '=') |
1477 | return dbx_alloc_type (typenums, objfile); | |
1478 | ||
1479 | /* Type is being defined here. */ | |
1480 | /* Skip the '='. | |
c5aa993b JM |
1481 | Also skip the type descriptor - we get it below with (*pp)[-1]. */ |
1482 | (*pp) += 2; | |
c906108c SS |
1483 | } |
1484 | else | |
1485 | { | |
1486 | /* 'typenums=' not present, type is anonymous. Read and return | |
c5aa993b | 1487 | the definition, but don't put it in the type vector. */ |
c906108c SS |
1488 | typenums[0] = typenums[1] = -1; |
1489 | (*pp)++; | |
1490 | } | |
1491 | ||
c5aa993b | 1492 | again: |
c906108c SS |
1493 | type_descriptor = (*pp)[-1]; |
1494 | switch (type_descriptor) | |
1495 | { | |
1496 | case 'x': | |
1497 | { | |
1498 | enum type_code code; | |
1499 | ||
1500 | /* Used to index through file_symbols. */ | |
1501 | struct pending *ppt; | |
1502 | int i; | |
c5aa993b | 1503 | |
c906108c SS |
1504 | /* Name including "struct", etc. */ |
1505 | char *type_name; | |
c5aa993b | 1506 | |
c906108c SS |
1507 | { |
1508 | char *from, *to, *p, *q1, *q2; | |
c5aa993b | 1509 | |
c906108c SS |
1510 | /* Set the type code according to the following letter. */ |
1511 | switch ((*pp)[0]) | |
1512 | { | |
1513 | case 's': | |
1514 | code = TYPE_CODE_STRUCT; | |
1515 | break; | |
1516 | case 'u': | |
1517 | code = TYPE_CODE_UNION; | |
1518 | break; | |
1519 | case 'e': | |
1520 | code = TYPE_CODE_ENUM; | |
1521 | break; | |
1522 | default: | |
1523 | { | |
1524 | /* Complain and keep going, so compilers can invent new | |
1525 | cross-reference types. */ | |
23136709 KB |
1526 | complaint (&symfile_complaints, |
1527 | "Unrecognized cross-reference type `%c'", (*pp)[0]); | |
c906108c SS |
1528 | code = TYPE_CODE_STRUCT; |
1529 | break; | |
1530 | } | |
1531 | } | |
c5aa993b | 1532 | |
c906108c SS |
1533 | q1 = strchr (*pp, '<'); |
1534 | p = strchr (*pp, ':'); | |
1535 | if (p == NULL) | |
1536 | return error_type (pp, objfile); | |
1537 | if (q1 && p > q1 && p[1] == ':') | |
1538 | { | |
1539 | int nesting_level = 0; | |
1540 | for (q2 = q1; *q2; q2++) | |
1541 | { | |
1542 | if (*q2 == '<') | |
1543 | nesting_level++; | |
1544 | else if (*q2 == '>') | |
1545 | nesting_level--; | |
1546 | else if (*q2 == ':' && nesting_level == 0) | |
1547 | break; | |
1548 | } | |
1549 | p = q2; | |
1550 | if (*p != ':') | |
1551 | return error_type (pp, objfile); | |
1552 | } | |
c5aa993b JM |
1553 | to = type_name = |
1554 | (char *) obstack_alloc (&objfile->type_obstack, p - *pp + 1); | |
1555 | ||
c906108c SS |
1556 | /* Copy the name. */ |
1557 | from = *pp + 1; | |
c5aa993b | 1558 | while (from < p) |
c906108c SS |
1559 | *to++ = *from++; |
1560 | *to = '\0'; | |
c5aa993b | 1561 | |
c906108c SS |
1562 | /* Set the pointer ahead of the name which we just read, and |
1563 | the colon. */ | |
1564 | *pp = from + 1; | |
1565 | } | |
1566 | ||
149d821b JB |
1567 | /* If this type has already been declared, then reuse the same |
1568 | type, rather than allocating a new one. This saves some | |
1569 | memory. */ | |
c906108c SS |
1570 | |
1571 | for (ppt = file_symbols; ppt; ppt = ppt->next) | |
1572 | for (i = 0; i < ppt->nsyms; i++) | |
1573 | { | |
1574 | struct symbol *sym = ppt->symbol[i]; | |
1575 | ||
1576 | if (SYMBOL_CLASS (sym) == LOC_TYPEDEF | |
176620f1 | 1577 | && SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN |
c906108c | 1578 | && (TYPE_CODE (SYMBOL_TYPE (sym)) == code) |
6314a349 | 1579 | && strcmp (DEPRECATED_SYMBOL_NAME (sym), type_name) == 0) |
c906108c | 1580 | { |
c5aa993b | 1581 | obstack_free (&objfile->type_obstack, type_name); |
c906108c | 1582 | type = SYMBOL_TYPE (sym); |
149d821b JB |
1583 | if (typenums[0] != -1) |
1584 | *dbx_lookup_type (typenums) = type; | |
c906108c SS |
1585 | return type; |
1586 | } | |
1587 | } | |
1588 | ||
1589 | /* Didn't find the type to which this refers, so we must | |
1590 | be dealing with a forward reference. Allocate a type | |
1591 | structure for it, and keep track of it so we can | |
1592 | fill in the rest of the fields when we get the full | |
1593 | type. */ | |
1594 | type = dbx_alloc_type (typenums, objfile); | |
1595 | TYPE_CODE (type) = code; | |
1596 | TYPE_TAG_NAME (type) = type_name; | |
c5aa993b | 1597 | INIT_CPLUS_SPECIFIC (type); |
c906108c SS |
1598 | TYPE_FLAGS (type) |= TYPE_FLAG_STUB; |
1599 | ||
1600 | add_undefined_type (type); | |
1601 | return type; | |
1602 | } | |
1603 | ||
c5aa993b | 1604 | case '-': /* RS/6000 built-in type */ |
c906108c SS |
1605 | case '0': |
1606 | case '1': | |
1607 | case '2': | |
1608 | case '3': | |
1609 | case '4': | |
1610 | case '5': | |
1611 | case '6': | |
1612 | case '7': | |
1613 | case '8': | |
1614 | case '9': | |
1615 | case '(': | |
1616 | (*pp)--; | |
1617 | ||
1618 | /* We deal with something like t(1,2)=(3,4)=... which | |
c5aa993b | 1619 | the Lucid compiler and recent gcc versions (post 2.7.3) use. */ |
c906108c SS |
1620 | |
1621 | /* Allocate and enter the typedef type first. | |
c5aa993b | 1622 | This handles recursive types. */ |
c906108c SS |
1623 | type = dbx_alloc_type (typenums, objfile); |
1624 | TYPE_CODE (type) = TYPE_CODE_TYPEDEF; | |
c5aa993b JM |
1625 | { |
1626 | struct type *xtype = read_type (pp, objfile); | |
c906108c SS |
1627 | if (type == xtype) |
1628 | { | |
1629 | /* It's being defined as itself. That means it is "void". */ | |
1630 | TYPE_CODE (type) = TYPE_CODE_VOID; | |
1631 | TYPE_LENGTH (type) = 1; | |
1632 | } | |
1633 | else if (type_size >= 0 || is_string) | |
1634 | { | |
dd6bda65 DJ |
1635 | /* This is the absolute wrong way to construct types. Every |
1636 | other debug format has found a way around this problem and | |
1637 | the related problems with unnecessarily stubbed types; | |
1638 | someone motivated should attempt to clean up the issue | |
1639 | here as well. Once a type pointed to has been created it | |
13a393b0 JB |
1640 | should not be modified. |
1641 | ||
1642 | Well, it's not *absolutely* wrong. Constructing recursive | |
1643 | types (trees, linked lists) necessarily entails modifying | |
1644 | types after creating them. Constructing any loop structure | |
1645 | entails side effects. The Dwarf 2 reader does handle this | |
1646 | more gracefully (it never constructs more than once | |
1647 | instance of a type object, so it doesn't have to copy type | |
1648 | objects wholesale), but it still mutates type objects after | |
1649 | other folks have references to them. | |
1650 | ||
1651 | Keep in mind that this circularity/mutation issue shows up | |
1652 | at the source language level, too: C's "incomplete types", | |
1653 | for example. So the proper cleanup, I think, would be to | |
1654 | limit GDB's type smashing to match exactly those required | |
1655 | by the source language. So GDB could have a | |
1656 | "complete_this_type" function, but never create unnecessary | |
1657 | copies of a type otherwise. */ | |
dd6bda65 | 1658 | replace_type (type, xtype); |
c906108c SS |
1659 | TYPE_NAME (type) = NULL; |
1660 | TYPE_TAG_NAME (type) = NULL; | |
1661 | } | |
1662 | else | |
1663 | { | |
1664 | TYPE_FLAGS (type) |= TYPE_FLAG_TARGET_STUB; | |
1665 | TYPE_TARGET_TYPE (type) = xtype; | |
1666 | } | |
1667 | } | |
1668 | break; | |
1669 | ||
c5aa993b JM |
1670 | /* In the following types, we must be sure to overwrite any existing |
1671 | type that the typenums refer to, rather than allocating a new one | |
1672 | and making the typenums point to the new one. This is because there | |
1673 | may already be pointers to the existing type (if it had been | |
1674 | forward-referenced), and we must change it to a pointer, function, | |
1675 | reference, or whatever, *in-place*. */ | |
c906108c | 1676 | |
e2cd42dd | 1677 | case '*': /* Pointer to another type */ |
c906108c SS |
1678 | type1 = read_type (pp, objfile); |
1679 | type = make_pointer_type (type1, dbx_lookup_type (typenums)); | |
1680 | break; | |
1681 | ||
c5aa993b | 1682 | case '&': /* Reference to another type */ |
c906108c SS |
1683 | type1 = read_type (pp, objfile); |
1684 | type = make_reference_type (type1, dbx_lookup_type (typenums)); | |
1685 | break; | |
1686 | ||
c5aa993b | 1687 | case 'f': /* Function returning another type */ |
c906108c SS |
1688 | type1 = read_type (pp, objfile); |
1689 | type = make_function_type (type1, dbx_lookup_type (typenums)); | |
1690 | break; | |
1691 | ||
da966255 JB |
1692 | case 'g': /* Prototyped function. (Sun) */ |
1693 | { | |
1694 | /* Unresolved questions: | |
1695 | ||
1696 | - According to Sun's ``STABS Interface Manual'', for 'f' | |
1697 | and 'F' symbol descriptors, a `0' in the argument type list | |
1698 | indicates a varargs function. But it doesn't say how 'g' | |
1699 | type descriptors represent that info. Someone with access | |
1700 | to Sun's toolchain should try it out. | |
1701 | ||
1702 | - According to the comment in define_symbol (search for | |
1703 | `process_prototype_types:'), Sun emits integer arguments as | |
1704 | types which ref themselves --- like `void' types. Do we | |
1705 | have to deal with that here, too? Again, someone with | |
1706 | access to Sun's toolchain should try it out and let us | |
1707 | know. */ | |
1708 | ||
1709 | const char *type_start = (*pp) - 1; | |
1710 | struct type *return_type = read_type (pp, objfile); | |
1711 | struct type *func_type | |
1712 | = make_function_type (return_type, dbx_lookup_type (typenums)); | |
1713 | struct type_list { | |
1714 | struct type *type; | |
1715 | struct type_list *next; | |
1716 | } *arg_types = 0; | |
1717 | int num_args = 0; | |
1718 | ||
1719 | while (**pp && **pp != '#') | |
1720 | { | |
1721 | struct type *arg_type = read_type (pp, objfile); | |
1722 | struct type_list *new = alloca (sizeof (*new)); | |
1723 | new->type = arg_type; | |
1724 | new->next = arg_types; | |
1725 | arg_types = new; | |
1726 | num_args++; | |
1727 | } | |
1728 | if (**pp == '#') | |
1729 | ++*pp; | |
1730 | else | |
1731 | { | |
23136709 KB |
1732 | complaint (&symfile_complaints, |
1733 | "Prototyped function type didn't end arguments with `#':\n%s", | |
1734 | type_start); | |
da966255 JB |
1735 | } |
1736 | ||
1737 | /* If there is just one argument whose type is `void', then | |
1738 | that's just an empty argument list. */ | |
1739 | if (arg_types | |
1740 | && ! arg_types->next | |
1741 | && TYPE_CODE (arg_types->type) == TYPE_CODE_VOID) | |
1742 | num_args = 0; | |
1743 | ||
1744 | TYPE_FIELDS (func_type) | |
1745 | = (struct field *) TYPE_ALLOC (func_type, | |
1746 | num_args * sizeof (struct field)); | |
1747 | memset (TYPE_FIELDS (func_type), 0, num_args * sizeof (struct field)); | |
1748 | { | |
1749 | int i; | |
1750 | struct type_list *t; | |
1751 | ||
1752 | /* We stuck each argument type onto the front of the list | |
1753 | when we read it, so the list is reversed. Build the | |
1754 | fields array right-to-left. */ | |
1755 | for (t = arg_types, i = num_args - 1; t; t = t->next, i--) | |
1756 | TYPE_FIELD_TYPE (func_type, i) = t->type; | |
1757 | } | |
1758 | TYPE_NFIELDS (func_type) = num_args; | |
1759 | TYPE_FLAGS (func_type) |= TYPE_FLAG_PROTOTYPED; | |
1760 | ||
1761 | type = func_type; | |
1762 | break; | |
1763 | } | |
1764 | ||
c5aa993b | 1765 | case 'k': /* Const qualifier on some type (Sun) */ |
c906108c | 1766 | type = read_type (pp, objfile); |
d7242108 DJ |
1767 | type = make_cv_type (1, TYPE_VOLATILE (type), type, |
1768 | dbx_lookup_type (typenums)); | |
c906108c SS |
1769 | break; |
1770 | ||
c5aa993b | 1771 | case 'B': /* Volatile qual on some type (Sun) */ |
c906108c | 1772 | type = read_type (pp, objfile); |
d7242108 DJ |
1773 | type = make_cv_type (TYPE_CONST (type), 1, type, |
1774 | dbx_lookup_type (typenums)); | |
c906108c SS |
1775 | break; |
1776 | ||
1777 | case '@': | |
c5aa993b JM |
1778 | if (isdigit (**pp) || **pp == '(' || **pp == '-') |
1779 | { /* Member (class & variable) type */ | |
c906108c SS |
1780 | /* FIXME -- we should be doing smash_to_XXX types here. */ |
1781 | ||
1782 | struct type *domain = read_type (pp, objfile); | |
1783 | struct type *memtype; | |
1784 | ||
1785 | if (**pp != ',') | |
1786 | /* Invalid member type data format. */ | |
1787 | return error_type (pp, objfile); | |
1788 | ++*pp; | |
1789 | ||
1790 | memtype = read_type (pp, objfile); | |
1791 | type = dbx_alloc_type (typenums, objfile); | |
1792 | smash_to_member_type (type, domain, memtype); | |
1793 | } | |
c5aa993b JM |
1794 | else |
1795 | /* type attribute */ | |
c906108c SS |
1796 | { |
1797 | char *attr = *pp; | |
1798 | /* Skip to the semicolon. */ | |
1799 | while (**pp != ';' && **pp != '\0') | |
1800 | ++(*pp); | |
1801 | if (**pp == '\0') | |
1802 | return error_type (pp, objfile); | |
1803 | else | |
c5aa993b | 1804 | ++ * pp; /* Skip the semicolon. */ |
c906108c SS |
1805 | |
1806 | switch (*attr) | |
1807 | { | |
e2cd42dd | 1808 | case 's': /* Size attribute */ |
c906108c SS |
1809 | type_size = atoi (attr + 1); |
1810 | if (type_size <= 0) | |
1811 | type_size = -1; | |
1812 | break; | |
1813 | ||
e2cd42dd MS |
1814 | case 'S': /* String attribute */ |
1815 | /* FIXME: check to see if following type is array? */ | |
c906108c SS |
1816 | is_string = 1; |
1817 | break; | |
1818 | ||
e2cd42dd MS |
1819 | case 'V': /* Vector attribute */ |
1820 | /* FIXME: check to see if following type is array? */ | |
1821 | is_vector = 1; | |
1822 | break; | |
1823 | ||
c906108c SS |
1824 | default: |
1825 | /* Ignore unrecognized type attributes, so future compilers | |
c5aa993b | 1826 | can invent new ones. */ |
c906108c SS |
1827 | break; |
1828 | } | |
1829 | ++*pp; | |
1830 | goto again; | |
1831 | } | |
1832 | break; | |
1833 | ||
c5aa993b | 1834 | case '#': /* Method (class & fn) type */ |
c906108c SS |
1835 | if ((*pp)[0] == '#') |
1836 | { | |
1837 | /* We'll get the parameter types from the name. */ | |
1838 | struct type *return_type; | |
1839 | ||
1840 | (*pp)++; | |
1841 | return_type = read_type (pp, objfile); | |
1842 | if (*(*pp)++ != ';') | |
23136709 KB |
1843 | complaint (&symfile_complaints, |
1844 | "invalid (minimal) member type data format at symtab pos %d.", | |
1845 | symnum); | |
c906108c SS |
1846 | type = allocate_stub_method (return_type); |
1847 | if (typenums[0] != -1) | |
1848 | *dbx_lookup_type (typenums) = type; | |
1849 | } | |
1850 | else | |
1851 | { | |
1852 | struct type *domain = read_type (pp, objfile); | |
1853 | struct type *return_type; | |
ad2f7632 DJ |
1854 | struct field *args; |
1855 | int nargs, varargs; | |
c906108c SS |
1856 | |
1857 | if (**pp != ',') | |
1858 | /* Invalid member type data format. */ | |
1859 | return error_type (pp, objfile); | |
1860 | else | |
1861 | ++(*pp); | |
1862 | ||
1863 | return_type = read_type (pp, objfile); | |
ad2f7632 | 1864 | args = read_args (pp, ';', objfile, &nargs, &varargs); |
c906108c | 1865 | type = dbx_alloc_type (typenums, objfile); |
ad2f7632 DJ |
1866 | smash_to_method_type (type, domain, return_type, args, |
1867 | nargs, varargs); | |
c906108c SS |
1868 | } |
1869 | break; | |
1870 | ||
c5aa993b | 1871 | case 'r': /* Range type */ |
c906108c SS |
1872 | type = read_range_type (pp, typenums, objfile); |
1873 | if (typenums[0] != -1) | |
1874 | *dbx_lookup_type (typenums) = type; | |
1875 | break; | |
1876 | ||
1877 | case 'b': | |
c906108c SS |
1878 | { |
1879 | /* Sun ACC builtin int type */ | |
1880 | type = read_sun_builtin_type (pp, typenums, objfile); | |
1881 | if (typenums[0] != -1) | |
1882 | *dbx_lookup_type (typenums) = type; | |
1883 | } | |
1884 | break; | |
1885 | ||
c5aa993b | 1886 | case 'R': /* Sun ACC builtin float type */ |
c906108c SS |
1887 | type = read_sun_floating_type (pp, typenums, objfile); |
1888 | if (typenums[0] != -1) | |
1889 | *dbx_lookup_type (typenums) = type; | |
1890 | break; | |
c5aa993b JM |
1891 | |
1892 | case 'e': /* Enumeration type */ | |
c906108c SS |
1893 | type = dbx_alloc_type (typenums, objfile); |
1894 | type = read_enum_type (pp, type, objfile); | |
1895 | if (typenums[0] != -1) | |
1896 | *dbx_lookup_type (typenums) = type; | |
1897 | break; | |
1898 | ||
c5aa993b JM |
1899 | case 's': /* Struct type */ |
1900 | case 'u': /* Union type */ | |
2ae1c2d2 JB |
1901 | { |
1902 | enum type_code type_code = TYPE_CODE_UNDEF; | |
1903 | type = dbx_alloc_type (typenums, objfile); | |
1904 | switch (type_descriptor) | |
1905 | { | |
1906 | case 's': | |
1907 | type_code = TYPE_CODE_STRUCT; | |
1908 | break; | |
1909 | case 'u': | |
1910 | type_code = TYPE_CODE_UNION; | |
1911 | break; | |
1912 | } | |
1913 | type = read_struct_type (pp, type, type_code, objfile); | |
1914 | break; | |
1915 | } | |
c906108c | 1916 | |
c5aa993b | 1917 | case 'a': /* Array type */ |
c906108c SS |
1918 | if (**pp != 'r') |
1919 | return error_type (pp, objfile); | |
1920 | ++*pp; | |
c5aa993b | 1921 | |
c906108c SS |
1922 | type = dbx_alloc_type (typenums, objfile); |
1923 | type = read_array_type (pp, type, objfile); | |
1924 | if (is_string) | |
1925 | TYPE_CODE (type) = TYPE_CODE_STRING; | |
e2cd42dd MS |
1926 | if (is_vector) |
1927 | TYPE_FLAGS (type) |= TYPE_FLAG_VECTOR; | |
c906108c SS |
1928 | break; |
1929 | ||
e2cd42dd | 1930 | case 'S': /* Set or bitstring type */ |
c906108c | 1931 | type1 = read_type (pp, objfile); |
c5aa993b | 1932 | type = create_set_type ((struct type *) NULL, type1); |
c906108c SS |
1933 | if (is_string) |
1934 | TYPE_CODE (type) = TYPE_CODE_BITSTRING; | |
1935 | if (typenums[0] != -1) | |
1936 | *dbx_lookup_type (typenums) = type; | |
1937 | break; | |
1938 | ||
1939 | default: | |
1940 | --*pp; /* Go back to the symbol in error */ | |
c5aa993b | 1941 | /* Particularly important if it was \0! */ |
c906108c SS |
1942 | return error_type (pp, objfile); |
1943 | } | |
1944 | ||
1945 | if (type == 0) | |
1946 | { | |
1947 | warning ("GDB internal error, type is NULL in stabsread.c\n"); | |
1948 | return error_type (pp, objfile); | |
1949 | } | |
1950 | ||
1951 | /* Size specified in a type attribute overrides any other size. */ | |
1952 | if (type_size != -1) | |
1953 | TYPE_LENGTH (type) = (type_size + TARGET_CHAR_BIT - 1) / TARGET_CHAR_BIT; | |
1954 | ||
1955 | return type; | |
1956 | } | |
1957 | \f | |
1958 | /* RS/6000 xlc/dbx combination uses a set of builtin types, starting from -1. | |
1959 | Return the proper type node for a given builtin type number. */ | |
1960 | ||
1961 | static struct type * | |
fba45db2 | 1962 | rs6000_builtin_type (int typenum) |
c906108c SS |
1963 | { |
1964 | /* We recognize types numbered from -NUMBER_RECOGNIZED to -1. */ | |
1965 | #define NUMBER_RECOGNIZED 34 | |
1966 | /* This includes an empty slot for type number -0. */ | |
1967 | static struct type *negative_types[NUMBER_RECOGNIZED + 1]; | |
1968 | struct type *rettype = NULL; | |
1969 | ||
1970 | if (typenum >= 0 || typenum < -NUMBER_RECOGNIZED) | |
1971 | { | |
23136709 | 1972 | complaint (&symfile_complaints, "Unknown builtin type %d", typenum); |
c906108c SS |
1973 | return builtin_type_error; |
1974 | } | |
1975 | if (negative_types[-typenum] != NULL) | |
1976 | return negative_types[-typenum]; | |
1977 | ||
1978 | #if TARGET_CHAR_BIT != 8 | |
c5aa993b | 1979 | #error This code wrong for TARGET_CHAR_BIT not 8 |
c906108c SS |
1980 | /* These definitions all assume that TARGET_CHAR_BIT is 8. I think |
1981 | that if that ever becomes not true, the correct fix will be to | |
1982 | make the size in the struct type to be in bits, not in units of | |
1983 | TARGET_CHAR_BIT. */ | |
1984 | #endif | |
1985 | ||
1986 | switch (-typenum) | |
1987 | { | |
1988 | case 1: | |
1989 | /* The size of this and all the other types are fixed, defined | |
c5aa993b JM |
1990 | by the debugging format. If there is a type called "int" which |
1991 | is other than 32 bits, then it should use a new negative type | |
1992 | number (or avoid negative type numbers for that case). | |
1993 | See stabs.texinfo. */ | |
c906108c SS |
1994 | rettype = init_type (TYPE_CODE_INT, 4, 0, "int", NULL); |
1995 | break; | |
1996 | case 2: | |
1997 | rettype = init_type (TYPE_CODE_INT, 1, 0, "char", NULL); | |
1998 | break; | |
1999 | case 3: | |
2000 | rettype = init_type (TYPE_CODE_INT, 2, 0, "short", NULL); | |
2001 | break; | |
2002 | case 4: | |
2003 | rettype = init_type (TYPE_CODE_INT, 4, 0, "long", NULL); | |
2004 | break; | |
2005 | case 5: | |
2006 | rettype = init_type (TYPE_CODE_INT, 1, TYPE_FLAG_UNSIGNED, | |
2007 | "unsigned char", NULL); | |
2008 | break; | |
2009 | case 6: | |
2010 | rettype = init_type (TYPE_CODE_INT, 1, 0, "signed char", NULL); | |
2011 | break; | |
2012 | case 7: | |
2013 | rettype = init_type (TYPE_CODE_INT, 2, TYPE_FLAG_UNSIGNED, | |
2014 | "unsigned short", NULL); | |
2015 | break; | |
2016 | case 8: | |
2017 | rettype = init_type (TYPE_CODE_INT, 4, TYPE_FLAG_UNSIGNED, | |
2018 | "unsigned int", NULL); | |
2019 | break; | |
2020 | case 9: | |
2021 | rettype = init_type (TYPE_CODE_INT, 4, TYPE_FLAG_UNSIGNED, | |
2022 | "unsigned", NULL); | |
2023 | case 10: | |
2024 | rettype = init_type (TYPE_CODE_INT, 4, TYPE_FLAG_UNSIGNED, | |
2025 | "unsigned long", NULL); | |
2026 | break; | |
2027 | case 11: | |
2028 | rettype = init_type (TYPE_CODE_VOID, 1, 0, "void", NULL); | |
2029 | break; | |
2030 | case 12: | |
2031 | /* IEEE single precision (32 bit). */ | |
2032 | rettype = init_type (TYPE_CODE_FLT, 4, 0, "float", NULL); | |
2033 | break; | |
2034 | case 13: | |
2035 | /* IEEE double precision (64 bit). */ | |
2036 | rettype = init_type (TYPE_CODE_FLT, 8, 0, "double", NULL); | |
2037 | break; | |
2038 | case 14: | |
2039 | /* This is an IEEE double on the RS/6000, and different machines with | |
c5aa993b JM |
2040 | different sizes for "long double" should use different negative |
2041 | type numbers. See stabs.texinfo. */ | |
c906108c SS |
2042 | rettype = init_type (TYPE_CODE_FLT, 8, 0, "long double", NULL); |
2043 | break; | |
2044 | case 15: | |
2045 | rettype = init_type (TYPE_CODE_INT, 4, 0, "integer", NULL); | |
2046 | break; | |
2047 | case 16: | |
2048 | rettype = init_type (TYPE_CODE_BOOL, 4, TYPE_FLAG_UNSIGNED, | |
2049 | "boolean", NULL); | |
2050 | break; | |
2051 | case 17: | |
2052 | rettype = init_type (TYPE_CODE_FLT, 4, 0, "short real", NULL); | |
2053 | break; | |
2054 | case 18: | |
2055 | rettype = init_type (TYPE_CODE_FLT, 8, 0, "real", NULL); | |
2056 | break; | |
2057 | case 19: | |
2058 | rettype = init_type (TYPE_CODE_ERROR, 0, 0, "stringptr", NULL); | |
2059 | break; | |
2060 | case 20: | |
2061 | rettype = init_type (TYPE_CODE_CHAR, 1, TYPE_FLAG_UNSIGNED, | |
2062 | "character", NULL); | |
2063 | break; | |
2064 | case 21: | |
2065 | rettype = init_type (TYPE_CODE_BOOL, 1, TYPE_FLAG_UNSIGNED, | |
2066 | "logical*1", NULL); | |
2067 | break; | |
2068 | case 22: | |
2069 | rettype = init_type (TYPE_CODE_BOOL, 2, TYPE_FLAG_UNSIGNED, | |
2070 | "logical*2", NULL); | |
2071 | break; | |
2072 | case 23: | |
2073 | rettype = init_type (TYPE_CODE_BOOL, 4, TYPE_FLAG_UNSIGNED, | |
2074 | "logical*4", NULL); | |
2075 | break; | |
2076 | case 24: | |
2077 | rettype = init_type (TYPE_CODE_BOOL, 4, TYPE_FLAG_UNSIGNED, | |
2078 | "logical", NULL); | |
2079 | break; | |
2080 | case 25: | |
2081 | /* Complex type consisting of two IEEE single precision values. */ | |
2082 | rettype = init_type (TYPE_CODE_COMPLEX, 8, 0, "complex", NULL); | |
f65ca430 DJ |
2083 | TYPE_TARGET_TYPE (rettype) = init_type (TYPE_CODE_FLT, 4, 0, "float", |
2084 | NULL); | |
c906108c SS |
2085 | break; |
2086 | case 26: | |
2087 | /* Complex type consisting of two IEEE double precision values. */ | |
2088 | rettype = init_type (TYPE_CODE_COMPLEX, 16, 0, "double complex", NULL); | |
f65ca430 DJ |
2089 | TYPE_TARGET_TYPE (rettype) = init_type (TYPE_CODE_FLT, 8, 0, "double", |
2090 | NULL); | |
c906108c SS |
2091 | break; |
2092 | case 27: | |
2093 | rettype = init_type (TYPE_CODE_INT, 1, 0, "integer*1", NULL); | |
2094 | break; | |
2095 | case 28: | |
2096 | rettype = init_type (TYPE_CODE_INT, 2, 0, "integer*2", NULL); | |
2097 | break; | |
2098 | case 29: | |
2099 | rettype = init_type (TYPE_CODE_INT, 4, 0, "integer*4", NULL); | |
2100 | break; | |
2101 | case 30: | |
2102 | rettype = init_type (TYPE_CODE_CHAR, 2, 0, "wchar", NULL); | |
2103 | break; | |
2104 | case 31: | |
2105 | rettype = init_type (TYPE_CODE_INT, 8, 0, "long long", NULL); | |
2106 | break; | |
2107 | case 32: | |
2108 | rettype = init_type (TYPE_CODE_INT, 8, TYPE_FLAG_UNSIGNED, | |
2109 | "unsigned long long", NULL); | |
2110 | break; | |
2111 | case 33: | |
2112 | rettype = init_type (TYPE_CODE_INT, 8, TYPE_FLAG_UNSIGNED, | |
2113 | "logical*8", NULL); | |
2114 | break; | |
2115 | case 34: | |
2116 | rettype = init_type (TYPE_CODE_INT, 8, 0, "integer*8", NULL); | |
2117 | break; | |
2118 | } | |
2119 | negative_types[-typenum] = rettype; | |
2120 | return rettype; | |
2121 | } | |
2122 | \f | |
2123 | /* This page contains subroutines of read_type. */ | |
2124 | ||
de17c821 DJ |
2125 | /* Replace *OLD_NAME with the method name portion of PHYSNAME. */ |
2126 | ||
2127 | static void | |
2128 | update_method_name_from_physname (char **old_name, char *physname) | |
2129 | { | |
2130 | char *method_name; | |
2131 | ||
2132 | method_name = method_name_from_physname (physname); | |
2133 | ||
2134 | if (method_name == NULL) | |
c263362b DJ |
2135 | { |
2136 | complaint (&symfile_complaints, | |
2137 | "Method has bad physname %s\n", physname); | |
2138 | return; | |
2139 | } | |
de17c821 DJ |
2140 | |
2141 | if (strcmp (*old_name, method_name) != 0) | |
2142 | { | |
2143 | xfree (*old_name); | |
2144 | *old_name = method_name; | |
2145 | } | |
2146 | else | |
2147 | xfree (method_name); | |
2148 | } | |
2149 | ||
c906108c SS |
2150 | /* Read member function stabs info for C++ classes. The form of each member |
2151 | function data is: | |
2152 | ||
c5aa993b | 2153 | NAME :: TYPENUM[=type definition] ARGS : PHYSNAME ; |
c906108c SS |
2154 | |
2155 | An example with two member functions is: | |
2156 | ||
c5aa993b | 2157 | afunc1::20=##15;:i;2A.;afunc2::20:i;2A.; |
c906108c SS |
2158 | |
2159 | For the case of overloaded operators, the format is op$::*.funcs, where | |
2160 | $ is the CPLUS_MARKER (usually '$'), `*' holds the place for an operator | |
2161 | name (such as `+=') and `.' marks the end of the operator name. | |
2162 | ||
2163 | Returns 1 for success, 0 for failure. */ | |
2164 | ||
2165 | static int | |
fba45db2 KB |
2166 | read_member_functions (struct field_info *fip, char **pp, struct type *type, |
2167 | struct objfile *objfile) | |
c906108c SS |
2168 | { |
2169 | int nfn_fields = 0; | |
2170 | int length = 0; | |
2171 | /* Total number of member functions defined in this class. If the class | |
2172 | defines two `f' functions, and one `g' function, then this will have | |
2173 | the value 3. */ | |
2174 | int total_length = 0; | |
2175 | int i; | |
2176 | struct next_fnfield | |
2177 | { | |
2178 | struct next_fnfield *next; | |
2179 | struct fn_field fn_field; | |
c5aa993b JM |
2180 | } |
2181 | *sublist; | |
c906108c SS |
2182 | struct type *look_ahead_type; |
2183 | struct next_fnfieldlist *new_fnlist; | |
2184 | struct next_fnfield *new_sublist; | |
2185 | char *main_fn_name; | |
52f0bd74 | 2186 | char *p; |
c5aa993b | 2187 | |
c906108c SS |
2188 | /* Process each list until we find something that is not a member function |
2189 | or find the end of the functions. */ | |
2190 | ||
2191 | while (**pp != ';') | |
2192 | { | |
2193 | /* We should be positioned at the start of the function name. | |
c5aa993b JM |
2194 | Scan forward to find the first ':' and if it is not the |
2195 | first of a "::" delimiter, then this is not a member function. */ | |
c906108c SS |
2196 | p = *pp; |
2197 | while (*p != ':') | |
2198 | { | |
2199 | p++; | |
2200 | } | |
2201 | if (p[1] != ':') | |
2202 | { | |
2203 | break; | |
2204 | } | |
2205 | ||
2206 | sublist = NULL; | |
2207 | look_ahead_type = NULL; | |
2208 | length = 0; | |
c5aa993b | 2209 | |
c906108c SS |
2210 | new_fnlist = (struct next_fnfieldlist *) |
2211 | xmalloc (sizeof (struct next_fnfieldlist)); | |
b8c9b27d | 2212 | make_cleanup (xfree, new_fnlist); |
c906108c | 2213 | memset (new_fnlist, 0, sizeof (struct next_fnfieldlist)); |
c5aa993b | 2214 | |
c906108c SS |
2215 | if ((*pp)[0] == 'o' && (*pp)[1] == 'p' && is_cplus_marker ((*pp)[2])) |
2216 | { | |
2217 | /* This is a completely wierd case. In order to stuff in the | |
2218 | names that might contain colons (the usual name delimiter), | |
2219 | Mike Tiemann defined a different name format which is | |
2220 | signalled if the identifier is "op$". In that case, the | |
2221 | format is "op$::XXXX." where XXXX is the name. This is | |
2222 | used for names like "+" or "=". YUUUUUUUK! FIXME! */ | |
2223 | /* This lets the user type "break operator+". | |
2224 | We could just put in "+" as the name, but that wouldn't | |
2225 | work for "*". */ | |
8343f86c | 2226 | static char opname[32] = "op$"; |
c906108c | 2227 | char *o = opname + 3; |
c5aa993b | 2228 | |
c906108c SS |
2229 | /* Skip past '::'. */ |
2230 | *pp = p + 2; | |
2231 | ||
2232 | STABS_CONTINUE (pp, objfile); | |
2233 | p = *pp; | |
2234 | while (*p != '.') | |
2235 | { | |
2236 | *o++ = *p++; | |
2237 | } | |
2238 | main_fn_name = savestring (opname, o - opname); | |
2239 | /* Skip past '.' */ | |
2240 | *pp = p + 1; | |
2241 | } | |
2242 | else | |
2243 | { | |
2244 | main_fn_name = savestring (*pp, p - *pp); | |
2245 | /* Skip past '::'. */ | |
2246 | *pp = p + 2; | |
2247 | } | |
c5aa993b JM |
2248 | new_fnlist->fn_fieldlist.name = main_fn_name; |
2249 | ||
c906108c SS |
2250 | do |
2251 | { | |
2252 | new_sublist = | |
2253 | (struct next_fnfield *) xmalloc (sizeof (struct next_fnfield)); | |
b8c9b27d | 2254 | make_cleanup (xfree, new_sublist); |
c906108c | 2255 | memset (new_sublist, 0, sizeof (struct next_fnfield)); |
c5aa993b | 2256 | |
c906108c SS |
2257 | /* Check for and handle cretinous dbx symbol name continuation! */ |
2258 | if (look_ahead_type == NULL) | |
2259 | { | |
2260 | /* Normal case. */ | |
2261 | STABS_CONTINUE (pp, objfile); | |
c5aa993b JM |
2262 | |
2263 | new_sublist->fn_field.type = read_type (pp, objfile); | |
c906108c SS |
2264 | if (**pp != ':') |
2265 | { | |
2266 | /* Invalid symtab info for member function. */ | |
2267 | return 0; | |
2268 | } | |
2269 | } | |
2270 | else | |
2271 | { | |
2272 | /* g++ version 1 kludge */ | |
c5aa993b | 2273 | new_sublist->fn_field.type = look_ahead_type; |
c906108c SS |
2274 | look_ahead_type = NULL; |
2275 | } | |
c5aa993b | 2276 | |
c906108c SS |
2277 | (*pp)++; |
2278 | p = *pp; | |
2279 | while (*p != ';') | |
2280 | { | |
2281 | p++; | |
2282 | } | |
c5aa993b | 2283 | |
c906108c SS |
2284 | /* If this is just a stub, then we don't have the real name here. */ |
2285 | ||
74a9bb82 | 2286 | if (TYPE_STUB (new_sublist->fn_field.type)) |
c906108c | 2287 | { |
c5aa993b JM |
2288 | if (!TYPE_DOMAIN_TYPE (new_sublist->fn_field.type)) |
2289 | TYPE_DOMAIN_TYPE (new_sublist->fn_field.type) = type; | |
2290 | new_sublist->fn_field.is_stub = 1; | |
c906108c | 2291 | } |
c5aa993b | 2292 | new_sublist->fn_field.physname = savestring (*pp, p - *pp); |
c906108c | 2293 | *pp = p + 1; |
c5aa993b | 2294 | |
c906108c SS |
2295 | /* Set this member function's visibility fields. */ |
2296 | switch (*(*pp)++) | |
2297 | { | |
c5aa993b JM |
2298 | case VISIBILITY_PRIVATE: |
2299 | new_sublist->fn_field.is_private = 1; | |
2300 | break; | |
2301 | case VISIBILITY_PROTECTED: | |
2302 | new_sublist->fn_field.is_protected = 1; | |
2303 | break; | |
c906108c | 2304 | } |
c5aa993b | 2305 | |
c906108c SS |
2306 | STABS_CONTINUE (pp, objfile); |
2307 | switch (**pp) | |
2308 | { | |
c5aa993b JM |
2309 | case 'A': /* Normal functions. */ |
2310 | new_sublist->fn_field.is_const = 0; | |
2311 | new_sublist->fn_field.is_volatile = 0; | |
2312 | (*pp)++; | |
2313 | break; | |
2314 | case 'B': /* `const' member functions. */ | |
2315 | new_sublist->fn_field.is_const = 1; | |
2316 | new_sublist->fn_field.is_volatile = 0; | |
2317 | (*pp)++; | |
2318 | break; | |
2319 | case 'C': /* `volatile' member function. */ | |
2320 | new_sublist->fn_field.is_const = 0; | |
2321 | new_sublist->fn_field.is_volatile = 1; | |
2322 | (*pp)++; | |
2323 | break; | |
2324 | case 'D': /* `const volatile' member function. */ | |
2325 | new_sublist->fn_field.is_const = 1; | |
2326 | new_sublist->fn_field.is_volatile = 1; | |
2327 | (*pp)++; | |
2328 | break; | |
2329 | case '*': /* File compiled with g++ version 1 -- no info */ | |
2330 | case '?': | |
2331 | case '.': | |
2332 | break; | |
2333 | default: | |
23136709 KB |
2334 | complaint (&symfile_complaints, |
2335 | "const/volatile indicator missing, got '%c'", **pp); | |
c5aa993b | 2336 | break; |
c906108c | 2337 | } |
c5aa993b | 2338 | |
c906108c SS |
2339 | switch (*(*pp)++) |
2340 | { | |
c5aa993b | 2341 | case '*': |
c906108c SS |
2342 | { |
2343 | int nbits; | |
c5aa993b | 2344 | /* virtual member function, followed by index. |
c906108c SS |
2345 | The sign bit is set to distinguish pointers-to-methods |
2346 | from virtual function indicies. Since the array is | |
2347 | in words, the quantity must be shifted left by 1 | |
2348 | on 16 bit machine, and by 2 on 32 bit machine, forcing | |
2349 | the sign bit out, and usable as a valid index into | |
2350 | the array. Remove the sign bit here. */ | |
c5aa993b | 2351 | new_sublist->fn_field.voffset = |
c906108c SS |
2352 | (0x7fffffff & read_huge_number (pp, ';', &nbits)) + 2; |
2353 | if (nbits != 0) | |
2354 | return 0; | |
c5aa993b | 2355 | |
c906108c SS |
2356 | STABS_CONTINUE (pp, objfile); |
2357 | if (**pp == ';' || **pp == '\0') | |
2358 | { | |
2359 | /* Must be g++ version 1. */ | |
c5aa993b | 2360 | new_sublist->fn_field.fcontext = 0; |
c906108c SS |
2361 | } |
2362 | else | |
2363 | { | |
2364 | /* Figure out from whence this virtual function came. | |
2365 | It may belong to virtual function table of | |
2366 | one of its baseclasses. */ | |
2367 | look_ahead_type = read_type (pp, objfile); | |
2368 | if (**pp == ':') | |
2369 | { | |
2370 | /* g++ version 1 overloaded methods. */ | |
2371 | } | |
2372 | else | |
2373 | { | |
c5aa993b | 2374 | new_sublist->fn_field.fcontext = look_ahead_type; |
c906108c SS |
2375 | if (**pp != ';') |
2376 | { | |
2377 | return 0; | |
2378 | } | |
2379 | else | |
2380 | { | |
2381 | ++*pp; | |
2382 | } | |
2383 | look_ahead_type = NULL; | |
2384 | } | |
2385 | } | |
2386 | break; | |
2387 | } | |
c5aa993b JM |
2388 | case '?': |
2389 | /* static member function. */ | |
4ea09c10 PS |
2390 | { |
2391 | int slen = strlen (main_fn_name); | |
2392 | ||
2393 | new_sublist->fn_field.voffset = VOFFSET_STATIC; | |
2394 | ||
2395 | /* For static member functions, we can't tell if they | |
2396 | are stubbed, as they are put out as functions, and not as | |
2397 | methods. | |
2398 | GCC v2 emits the fully mangled name if | |
2399 | dbxout.c:flag_minimal_debug is not set, so we have to | |
2400 | detect a fully mangled physname here and set is_stub | |
2401 | accordingly. Fully mangled physnames in v2 start with | |
2402 | the member function name, followed by two underscores. | |
2403 | GCC v3 currently always emits stubbed member functions, | |
2404 | but with fully mangled physnames, which start with _Z. */ | |
2405 | if (!(strncmp (new_sublist->fn_field.physname, | |
2406 | main_fn_name, slen) == 0 | |
2407 | && new_sublist->fn_field.physname[slen] == '_' | |
2408 | && new_sublist->fn_field.physname[slen + 1] == '_')) | |
2409 | { | |
2410 | new_sublist->fn_field.is_stub = 1; | |
2411 | } | |
2412 | break; | |
2413 | } | |
c5aa993b JM |
2414 | |
2415 | default: | |
2416 | /* error */ | |
23136709 KB |
2417 | complaint (&symfile_complaints, |
2418 | "member function type missing, got '%c'", (*pp)[-1]); | |
c5aa993b JM |
2419 | /* Fall through into normal member function. */ |
2420 | ||
2421 | case '.': | |
2422 | /* normal member function. */ | |
2423 | new_sublist->fn_field.voffset = 0; | |
2424 | new_sublist->fn_field.fcontext = 0; | |
2425 | break; | |
c906108c | 2426 | } |
c5aa993b JM |
2427 | |
2428 | new_sublist->next = sublist; | |
c906108c SS |
2429 | sublist = new_sublist; |
2430 | length++; | |
2431 | STABS_CONTINUE (pp, objfile); | |
2432 | } | |
2433 | while (**pp != ';' && **pp != '\0'); | |
c5aa993b | 2434 | |
c906108c | 2435 | (*pp)++; |
0c867556 | 2436 | STABS_CONTINUE (pp, objfile); |
c5aa993b | 2437 | |
0c867556 PS |
2438 | /* Skip GCC 3.X member functions which are duplicates of the callable |
2439 | constructor/destructor. */ | |
2440 | if (strcmp (main_fn_name, "__base_ctor") == 0 | |
2441 | || strcmp (main_fn_name, "__base_dtor") == 0 | |
2442 | || strcmp (main_fn_name, "__deleting_dtor") == 0) | |
c906108c | 2443 | { |
0c867556 | 2444 | xfree (main_fn_name); |
c906108c | 2445 | } |
0c867556 PS |
2446 | else |
2447 | { | |
de17c821 DJ |
2448 | int has_stub = 0; |
2449 | int has_destructor = 0, has_other = 0; | |
2450 | int is_v3 = 0; | |
2451 | struct next_fnfield *tmp_sublist; | |
2452 | ||
2453 | /* Various versions of GCC emit various mostly-useless | |
2454 | strings in the name field for special member functions. | |
2455 | ||
2456 | For stub methods, we need to defer correcting the name | |
2457 | until we are ready to unstub the method, because the current | |
2458 | name string is used by gdb_mangle_name. The only stub methods | |
2459 | of concern here are GNU v2 operators; other methods have their | |
2460 | names correct (see caveat below). | |
2461 | ||
2462 | For non-stub methods, in GNU v3, we have a complete physname. | |
2463 | Therefore we can safely correct the name now. This primarily | |
2464 | affects constructors and destructors, whose name will be | |
2465 | __comp_ctor or __comp_dtor instead of Foo or ~Foo. Cast | |
2466 | operators will also have incorrect names; for instance, | |
2467 | "operator int" will be named "operator i" (i.e. the type is | |
2468 | mangled). | |
2469 | ||
2470 | For non-stub methods in GNU v2, we have no easy way to | |
2471 | know if we have a complete physname or not. For most | |
2472 | methods the result depends on the platform (if CPLUS_MARKER | |
2473 | can be `$' or `.', it will use minimal debug information, or | |
2474 | otherwise the full physname will be included). | |
2475 | ||
2476 | Rather than dealing with this, we take a different approach. | |
2477 | For v3 mangled names, we can use the full physname; for v2, | |
2478 | we use cplus_demangle_opname (which is actually v2 specific), | |
2479 | because the only interesting names are all operators - once again | |
2480 | barring the caveat below. Skip this process if any method in the | |
2481 | group is a stub, to prevent our fouling up the workings of | |
2482 | gdb_mangle_name. | |
2483 | ||
2484 | The caveat: GCC 2.95.x (and earlier?) put constructors and | |
2485 | destructors in the same method group. We need to split this | |
2486 | into two groups, because they should have different names. | |
2487 | So for each method group we check whether it contains both | |
2488 | routines whose physname appears to be a destructor (the physnames | |
2489 | for and destructors are always provided, due to quirks in v2 | |
2490 | mangling) and routines whose physname does not appear to be a | |
2491 | destructor. If so then we break up the list into two halves. | |
2492 | Even if the constructors and destructors aren't in the same group | |
2493 | the destructor will still lack the leading tilde, so that also | |
2494 | needs to be fixed. | |
2495 | ||
2496 | So, to summarize what we expect and handle here: | |
2497 | ||
2498 | Given Given Real Real Action | |
2499 | method name physname physname method name | |
2500 | ||
2501 | __opi [none] __opi__3Foo operator int opname | |
2502 | [now or later] | |
2503 | Foo _._3Foo _._3Foo ~Foo separate and | |
2504 | rename | |
2505 | operator i _ZN3FoocviEv _ZN3FoocviEv operator int demangle | |
2506 | __comp_ctor _ZN3FooC1ERKS_ _ZN3FooC1ERKS_ Foo demangle | |
2507 | */ | |
2508 | ||
2509 | tmp_sublist = sublist; | |
2510 | while (tmp_sublist != NULL) | |
2511 | { | |
2512 | if (tmp_sublist->fn_field.is_stub) | |
2513 | has_stub = 1; | |
2514 | if (tmp_sublist->fn_field.physname[0] == '_' | |
2515 | && tmp_sublist->fn_field.physname[1] == 'Z') | |
2516 | is_v3 = 1; | |
2517 | ||
2518 | if (is_destructor_name (tmp_sublist->fn_field.physname)) | |
2519 | has_destructor++; | |
2520 | else | |
2521 | has_other++; | |
2522 | ||
2523 | tmp_sublist = tmp_sublist->next; | |
2524 | } | |
2525 | ||
2526 | if (has_destructor && has_other) | |
2527 | { | |
2528 | struct next_fnfieldlist *destr_fnlist; | |
2529 | struct next_fnfield *last_sublist; | |
2530 | ||
2531 | /* Create a new fn_fieldlist for the destructors. */ | |
2532 | ||
2533 | destr_fnlist = (struct next_fnfieldlist *) | |
2534 | xmalloc (sizeof (struct next_fnfieldlist)); | |
2535 | make_cleanup (xfree, destr_fnlist); | |
2536 | memset (destr_fnlist, 0, sizeof (struct next_fnfieldlist)); | |
2537 | destr_fnlist->fn_fieldlist.name | |
2538 | = obconcat (&objfile->type_obstack, "", "~", | |
2539 | new_fnlist->fn_fieldlist.name); | |
2540 | ||
2541 | destr_fnlist->fn_fieldlist.fn_fields = (struct fn_field *) | |
2542 | obstack_alloc (&objfile->type_obstack, | |
2543 | sizeof (struct fn_field) * has_destructor); | |
2544 | memset (destr_fnlist->fn_fieldlist.fn_fields, 0, | |
2545 | sizeof (struct fn_field) * has_destructor); | |
2546 | tmp_sublist = sublist; | |
2547 | last_sublist = NULL; | |
2548 | i = 0; | |
2549 | while (tmp_sublist != NULL) | |
2550 | { | |
2551 | if (!is_destructor_name (tmp_sublist->fn_field.physname)) | |
2552 | { | |
2553 | tmp_sublist = tmp_sublist->next; | |
2554 | continue; | |
2555 | } | |
2556 | ||
2557 | destr_fnlist->fn_fieldlist.fn_fields[i++] | |
2558 | = tmp_sublist->fn_field; | |
2559 | if (last_sublist) | |
2560 | last_sublist->next = tmp_sublist->next; | |
2561 | else | |
2562 | sublist = tmp_sublist->next; | |
2563 | last_sublist = tmp_sublist; | |
2564 | tmp_sublist = tmp_sublist->next; | |
2565 | } | |
2566 | ||
2567 | destr_fnlist->fn_fieldlist.length = has_destructor; | |
2568 | destr_fnlist->next = fip->fnlist; | |
2569 | fip->fnlist = destr_fnlist; | |
2570 | nfn_fields++; | |
2571 | total_length += has_destructor; | |
2572 | length -= has_destructor; | |
2573 | } | |
2574 | else if (is_v3) | |
2575 | { | |
2576 | /* v3 mangling prevents the use of abbreviated physnames, | |
2577 | so we can do this here. There are stubbed methods in v3 | |
2578 | only: | |
2579 | - in -gstabs instead of -gstabs+ | |
2580 | - or for static methods, which are output as a function type | |
2581 | instead of a method type. */ | |
2582 | ||
2583 | update_method_name_from_physname (&new_fnlist->fn_fieldlist.name, | |
2584 | sublist->fn_field.physname); | |
2585 | } | |
2586 | else if (has_destructor && new_fnlist->fn_fieldlist.name[0] != '~') | |
2587 | { | |
2588 | new_fnlist->fn_fieldlist.name = concat ("~", main_fn_name, NULL); | |
2589 | xfree (main_fn_name); | |
2590 | } | |
2591 | else if (!has_stub) | |
2592 | { | |
2593 | char dem_opname[256]; | |
2594 | int ret; | |
2595 | ret = cplus_demangle_opname (new_fnlist->fn_fieldlist.name, | |
2596 | dem_opname, DMGL_ANSI); | |
2597 | if (!ret) | |
2598 | ret = cplus_demangle_opname (new_fnlist->fn_fieldlist.name, | |
2599 | dem_opname, 0); | |
2600 | if (ret) | |
2601 | new_fnlist->fn_fieldlist.name | |
2602 | = obsavestring (dem_opname, strlen (dem_opname), | |
2603 | &objfile->type_obstack); | |
2604 | } | |
2605 | ||
0c867556 PS |
2606 | new_fnlist->fn_fieldlist.fn_fields = (struct fn_field *) |
2607 | obstack_alloc (&objfile->type_obstack, | |
2608 | sizeof (struct fn_field) * length); | |
2609 | memset (new_fnlist->fn_fieldlist.fn_fields, 0, | |
2610 | sizeof (struct fn_field) * length); | |
2611 | for (i = length; (i--, sublist); sublist = sublist->next) | |
2612 | { | |
2613 | new_fnlist->fn_fieldlist.fn_fields[i] = sublist->fn_field; | |
2614 | } | |
c5aa993b | 2615 | |
0c867556 PS |
2616 | new_fnlist->fn_fieldlist.length = length; |
2617 | new_fnlist->next = fip->fnlist; | |
2618 | fip->fnlist = new_fnlist; | |
2619 | nfn_fields++; | |
2620 | total_length += length; | |
2621 | } | |
c906108c SS |
2622 | } |
2623 | ||
2624 | if (nfn_fields) | |
2625 | { | |
2626 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
2627 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
2628 | TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * nfn_fields); | |
2629 | memset (TYPE_FN_FIELDLISTS (type), 0, | |
2630 | sizeof (struct fn_fieldlist) * nfn_fields); | |
2631 | TYPE_NFN_FIELDS (type) = nfn_fields; | |
2632 | TYPE_NFN_FIELDS_TOTAL (type) = total_length; | |
2633 | } | |
2634 | ||
2635 | return 1; | |
2636 | } | |
2637 | ||
2638 | /* Special GNU C++ name. | |
2639 | ||
2640 | Returns 1 for success, 0 for failure. "failure" means that we can't | |
2641 | keep parsing and it's time for error_type(). */ | |
2642 | ||
2643 | static int | |
fba45db2 KB |
2644 | read_cpp_abbrev (struct field_info *fip, char **pp, struct type *type, |
2645 | struct objfile *objfile) | |
c906108c | 2646 | { |
52f0bd74 | 2647 | char *p; |
c906108c SS |
2648 | char *name; |
2649 | char cpp_abbrev; | |
2650 | struct type *context; | |
2651 | ||
2652 | p = *pp; | |
2653 | if (*++p == 'v') | |
2654 | { | |
2655 | name = NULL; | |
2656 | cpp_abbrev = *++p; | |
2657 | ||
2658 | *pp = p + 1; | |
2659 | ||
2660 | /* At this point, *pp points to something like "22:23=*22...", | |
c5aa993b JM |
2661 | where the type number before the ':' is the "context" and |
2662 | everything after is a regular type definition. Lookup the | |
2663 | type, find it's name, and construct the field name. */ | |
c906108c SS |
2664 | |
2665 | context = read_type (pp, objfile); | |
2666 | ||
2667 | switch (cpp_abbrev) | |
2668 | { | |
c5aa993b | 2669 | case 'f': /* $vf -- a virtual function table pointer */ |
c2bd2ed9 JB |
2670 | name = type_name_no_tag (context); |
2671 | if (name == NULL) | |
2672 | { | |
2673 | name = ""; | |
2674 | } | |
c5aa993b | 2675 | fip->list->field.name = |
c2bd2ed9 | 2676 | obconcat (&objfile->type_obstack, vptr_name, name, ""); |
c5aa993b | 2677 | break; |
c906108c | 2678 | |
c5aa993b JM |
2679 | case 'b': /* $vb -- a virtual bsomethingorother */ |
2680 | name = type_name_no_tag (context); | |
2681 | if (name == NULL) | |
2682 | { | |
23136709 KB |
2683 | complaint (&symfile_complaints, |
2684 | "C++ abbreviated type name unknown at symtab pos %d", | |
2685 | symnum); | |
c5aa993b JM |
2686 | name = "FOO"; |
2687 | } | |
2688 | fip->list->field.name = | |
2689 | obconcat (&objfile->type_obstack, vb_name, name, ""); | |
2690 | break; | |
c906108c | 2691 | |
c5aa993b | 2692 | default: |
23136709 | 2693 | invalid_cpp_abbrev_complaint (*pp); |
c5aa993b JM |
2694 | fip->list->field.name = |
2695 | obconcat (&objfile->type_obstack, | |
2696 | "INVALID_CPLUSPLUS_ABBREV", "", ""); | |
2697 | break; | |
c906108c SS |
2698 | } |
2699 | ||
2700 | /* At this point, *pp points to the ':'. Skip it and read the | |
c5aa993b | 2701 | field type. */ |
c906108c SS |
2702 | |
2703 | p = ++(*pp); | |
2704 | if (p[-1] != ':') | |
2705 | { | |
23136709 | 2706 | invalid_cpp_abbrev_complaint (*pp); |
c906108c SS |
2707 | return 0; |
2708 | } | |
2709 | fip->list->field.type = read_type (pp, objfile); | |
2710 | if (**pp == ',') | |
c5aa993b | 2711 | (*pp)++; /* Skip the comma. */ |
c906108c SS |
2712 | else |
2713 | return 0; | |
2714 | ||
2715 | { | |
2716 | int nbits; | |
2717 | FIELD_BITPOS (fip->list->field) = read_huge_number (pp, ';', &nbits); | |
2718 | if (nbits != 0) | |
2719 | return 0; | |
2720 | } | |
2721 | /* This field is unpacked. */ | |
2722 | FIELD_BITSIZE (fip->list->field) = 0; | |
2723 | fip->list->visibility = VISIBILITY_PRIVATE; | |
2724 | } | |
2725 | else | |
2726 | { | |
23136709 | 2727 | invalid_cpp_abbrev_complaint (*pp); |
c906108c | 2728 | /* We have no idea what syntax an unrecognized abbrev would have, so |
c5aa993b JM |
2729 | better return 0. If we returned 1, we would need to at least advance |
2730 | *pp to avoid an infinite loop. */ | |
c906108c SS |
2731 | return 0; |
2732 | } | |
2733 | return 1; | |
2734 | } | |
2735 | ||
2736 | static void | |
fba45db2 KB |
2737 | read_one_struct_field (struct field_info *fip, char **pp, char *p, |
2738 | struct type *type, struct objfile *objfile) | |
c906108c | 2739 | { |
41989fcd AC |
2740 | fip->list->field.name = |
2741 | obsavestring (*pp, p - *pp, &objfile->type_obstack); | |
c906108c SS |
2742 | *pp = p + 1; |
2743 | ||
2744 | /* This means we have a visibility for a field coming. */ | |
2745 | if (**pp == '/') | |
2746 | { | |
2747 | (*pp)++; | |
c5aa993b | 2748 | fip->list->visibility = *(*pp)++; |
c906108c SS |
2749 | } |
2750 | else | |
2751 | { | |
2752 | /* normal dbx-style format, no explicit visibility */ | |
c5aa993b | 2753 | fip->list->visibility = VISIBILITY_PUBLIC; |
c906108c SS |
2754 | } |
2755 | ||
c5aa993b | 2756 | fip->list->field.type = read_type (pp, objfile); |
c906108c SS |
2757 | if (**pp == ':') |
2758 | { | |
2759 | p = ++(*pp); | |
2760 | #if 0 | |
2761 | /* Possible future hook for nested types. */ | |
2762 | if (**pp == '!') | |
2763 | { | |
c5aa993b | 2764 | fip->list->field.bitpos = (long) -2; /* nested type */ |
c906108c SS |
2765 | p = ++(*pp); |
2766 | } | |
c5aa993b JM |
2767 | else |
2768 | ...; | |
c906108c | 2769 | #endif |
c5aa993b | 2770 | while (*p != ';') |
c906108c SS |
2771 | { |
2772 | p++; | |
2773 | } | |
2774 | /* Static class member. */ | |
2775 | SET_FIELD_PHYSNAME (fip->list->field, savestring (*pp, p - *pp)); | |
2776 | *pp = p + 1; | |
2777 | return; | |
2778 | } | |
2779 | else if (**pp != ',') | |
2780 | { | |
2781 | /* Bad structure-type format. */ | |
23136709 | 2782 | stabs_general_complaint ("bad structure-type format"); |
c906108c SS |
2783 | return; |
2784 | } | |
2785 | ||
2786 | (*pp)++; /* Skip the comma. */ | |
2787 | ||
2788 | { | |
2789 | int nbits; | |
2790 | FIELD_BITPOS (fip->list->field) = read_huge_number (pp, ',', &nbits); | |
2791 | if (nbits != 0) | |
2792 | { | |
23136709 | 2793 | stabs_general_complaint ("bad structure-type format"); |
c906108c SS |
2794 | return; |
2795 | } | |
2796 | FIELD_BITSIZE (fip->list->field) = read_huge_number (pp, ';', &nbits); | |
2797 | if (nbits != 0) | |
2798 | { | |
23136709 | 2799 | stabs_general_complaint ("bad structure-type format"); |
c906108c SS |
2800 | return; |
2801 | } | |
2802 | } | |
2803 | ||
2804 | if (FIELD_BITPOS (fip->list->field) == 0 | |
2805 | && FIELD_BITSIZE (fip->list->field) == 0) | |
2806 | { | |
2807 | /* This can happen in two cases: (1) at least for gcc 2.4.5 or so, | |
c5aa993b JM |
2808 | it is a field which has been optimized out. The correct stab for |
2809 | this case is to use VISIBILITY_IGNORE, but that is a recent | |
2810 | invention. (2) It is a 0-size array. For example | |
2811 | union { int num; char str[0]; } foo. Printing "<no value>" for | |
2812 | str in "p foo" is OK, since foo.str (and thus foo.str[3]) | |
2813 | will continue to work, and a 0-size array as a whole doesn't | |
2814 | have any contents to print. | |
2815 | ||
2816 | I suspect this probably could also happen with gcc -gstabs (not | |
2817 | -gstabs+) for static fields, and perhaps other C++ extensions. | |
2818 | Hopefully few people use -gstabs with gdb, since it is intended | |
2819 | for dbx compatibility. */ | |
c906108c SS |
2820 | |
2821 | /* Ignore this field. */ | |
c5aa993b | 2822 | fip->list->visibility = VISIBILITY_IGNORE; |
c906108c SS |
2823 | } |
2824 | else | |
2825 | { | |
2826 | /* Detect an unpacked field and mark it as such. | |
c5aa993b JM |
2827 | dbx gives a bit size for all fields. |
2828 | Note that forward refs cannot be packed, | |
2829 | and treat enums as if they had the width of ints. */ | |
c906108c SS |
2830 | |
2831 | struct type *field_type = check_typedef (FIELD_TYPE (fip->list->field)); | |
2832 | ||
2833 | if (TYPE_CODE (field_type) != TYPE_CODE_INT | |
2834 | && TYPE_CODE (field_type) != TYPE_CODE_RANGE | |
2835 | && TYPE_CODE (field_type) != TYPE_CODE_BOOL | |
2836 | && TYPE_CODE (field_type) != TYPE_CODE_ENUM) | |
2837 | { | |
2838 | FIELD_BITSIZE (fip->list->field) = 0; | |
2839 | } | |
c5aa993b | 2840 | if ((FIELD_BITSIZE (fip->list->field) |
c906108c SS |
2841 | == TARGET_CHAR_BIT * TYPE_LENGTH (field_type) |
2842 | || (TYPE_CODE (field_type) == TYPE_CODE_ENUM | |
c5aa993b JM |
2843 | && FIELD_BITSIZE (fip->list->field) == TARGET_INT_BIT) |
2844 | ) | |
c906108c SS |
2845 | && |
2846 | FIELD_BITPOS (fip->list->field) % 8 == 0) | |
2847 | { | |
2848 | FIELD_BITSIZE (fip->list->field) = 0; | |
2849 | } | |
2850 | } | |
2851 | } | |
2852 | ||
2853 | ||
2854 | /* Read struct or class data fields. They have the form: | |
2855 | ||
c5aa993b | 2856 | NAME : [VISIBILITY] TYPENUM , BITPOS , BITSIZE ; |
c906108c SS |
2857 | |
2858 | At the end, we see a semicolon instead of a field. | |
2859 | ||
2860 | In C++, this may wind up being NAME:?TYPENUM:PHYSNAME; for | |
2861 | a static field. | |
2862 | ||
2863 | The optional VISIBILITY is one of: | |
2864 | ||
c5aa993b JM |
2865 | '/0' (VISIBILITY_PRIVATE) |
2866 | '/1' (VISIBILITY_PROTECTED) | |
2867 | '/2' (VISIBILITY_PUBLIC) | |
2868 | '/9' (VISIBILITY_IGNORE) | |
c906108c SS |
2869 | |
2870 | or nothing, for C style fields with public visibility. | |
2871 | ||
2872 | Returns 1 for success, 0 for failure. */ | |
2873 | ||
2874 | static int | |
fba45db2 KB |
2875 | read_struct_fields (struct field_info *fip, char **pp, struct type *type, |
2876 | struct objfile *objfile) | |
c906108c | 2877 | { |
52f0bd74 | 2878 | char *p; |
c906108c SS |
2879 | struct nextfield *new; |
2880 | ||
2881 | /* We better set p right now, in case there are no fields at all... */ | |
2882 | ||
2883 | p = *pp; | |
2884 | ||
2885 | /* Read each data member type until we find the terminating ';' at the end of | |
2886 | the data member list, or break for some other reason such as finding the | |
2887 | start of the member function list. */ | |
fedbd091 EZ |
2888 | /* Stab string for structure/union does not end with two ';' in |
2889 | SUN C compiler 5.3 i.e. F6U2, hence check for end of string. */ | |
c906108c | 2890 | |
fedbd091 | 2891 | while (**pp != ';' && **pp != '\0') |
c906108c | 2892 | { |
c906108c SS |
2893 | STABS_CONTINUE (pp, objfile); |
2894 | /* Get space to record the next field's data. */ | |
2895 | new = (struct nextfield *) xmalloc (sizeof (struct nextfield)); | |
b8c9b27d | 2896 | make_cleanup (xfree, new); |
c906108c | 2897 | memset (new, 0, sizeof (struct nextfield)); |
c5aa993b JM |
2898 | new->next = fip->list; |
2899 | fip->list = new; | |
c906108c SS |
2900 | |
2901 | /* Get the field name. */ | |
2902 | p = *pp; | |
2903 | ||
2904 | /* If is starts with CPLUS_MARKER it is a special abbreviation, | |
c5aa993b JM |
2905 | unless the CPLUS_MARKER is followed by an underscore, in |
2906 | which case it is just the name of an anonymous type, which we | |
2907 | should handle like any other type name. */ | |
c906108c SS |
2908 | |
2909 | if (is_cplus_marker (p[0]) && p[1] != '_') | |
2910 | { | |
2911 | if (!read_cpp_abbrev (fip, pp, type, objfile)) | |
2912 | return 0; | |
2913 | continue; | |
2914 | } | |
2915 | ||
2916 | /* Look for the ':' that separates the field name from the field | |
c5aa993b JM |
2917 | values. Data members are delimited by a single ':', while member |
2918 | functions are delimited by a pair of ':'s. When we hit the member | |
2919 | functions (if any), terminate scan loop and return. */ | |
c906108c | 2920 | |
c5aa993b | 2921 | while (*p != ':' && *p != '\0') |
c906108c SS |
2922 | { |
2923 | p++; | |
2924 | } | |
2925 | if (*p == '\0') | |
2926 | return 0; | |
2927 | ||
2928 | /* Check to see if we have hit the member functions yet. */ | |
2929 | if (p[1] == ':') | |
2930 | { | |
2931 | break; | |
2932 | } | |
2933 | read_one_struct_field (fip, pp, p, type, objfile); | |
2934 | } | |
2935 | if (p[0] == ':' && p[1] == ':') | |
2936 | { | |
1b831c93 AC |
2937 | /* (the deleted) chill the list of fields: the last entry (at |
2938 | the head) is a partially constructed entry which we now | |
2939 | scrub. */ | |
c5aa993b | 2940 | fip->list = fip->list->next; |
c906108c SS |
2941 | } |
2942 | return 1; | |
2943 | } | |
9846de1b | 2944 | /* *INDENT-OFF* */ |
c906108c SS |
2945 | /* The stabs for C++ derived classes contain baseclass information which |
2946 | is marked by a '!' character after the total size. This function is | |
2947 | called when we encounter the baseclass marker, and slurps up all the | |
2948 | baseclass information. | |
2949 | ||
2950 | Immediately following the '!' marker is the number of base classes that | |
2951 | the class is derived from, followed by information for each base class. | |
2952 | For each base class, there are two visibility specifiers, a bit offset | |
2953 | to the base class information within the derived class, a reference to | |
2954 | the type for the base class, and a terminating semicolon. | |
2955 | ||
2956 | A typical example, with two base classes, would be "!2,020,19;0264,21;". | |
2957 | ^^ ^ ^ ^ ^ ^ ^ | |
2958 | Baseclass information marker __________________|| | | | | | | | |
2959 | Number of baseclasses __________________________| | | | | | | | |
2960 | Visibility specifiers (2) ________________________| | | | | | | |
2961 | Offset in bits from start of class _________________| | | | | | |
2962 | Type number for base class ___________________________| | | | | |
2963 | Visibility specifiers (2) _______________________________| | | | |
2964 | Offset in bits from start of class ________________________| | | |
2965 | Type number of base class ____________________________________| | |
2966 | ||
2967 | Return 1 for success, 0 for (error-type-inducing) failure. */ | |
9846de1b | 2968 | /* *INDENT-ON* */ |
c906108c | 2969 | |
c5aa993b JM |
2970 | |
2971 | ||
c906108c | 2972 | static int |
fba45db2 KB |
2973 | read_baseclasses (struct field_info *fip, char **pp, struct type *type, |
2974 | struct objfile *objfile) | |
c906108c SS |
2975 | { |
2976 | int i; | |
2977 | struct nextfield *new; | |
2978 | ||
2979 | if (**pp != '!') | |
2980 | { | |
2981 | return 1; | |
2982 | } | |
2983 | else | |
2984 | { | |
2985 | /* Skip the '!' baseclass information marker. */ | |
2986 | (*pp)++; | |
2987 | } | |
2988 | ||
2989 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
2990 | { | |
2991 | int nbits; | |
2992 | TYPE_N_BASECLASSES (type) = read_huge_number (pp, ',', &nbits); | |
2993 | if (nbits != 0) | |
2994 | return 0; | |
2995 | } | |
2996 | ||
2997 | #if 0 | |
2998 | /* Some stupid compilers have trouble with the following, so break | |
2999 | it up into simpler expressions. */ | |
3000 | TYPE_FIELD_VIRTUAL_BITS (type) = (B_TYPE *) | |
3001 | TYPE_ALLOC (type, B_BYTES (TYPE_N_BASECLASSES (type))); | |
3002 | #else | |
3003 | { | |
3004 | int num_bytes = B_BYTES (TYPE_N_BASECLASSES (type)); | |
3005 | char *pointer; | |
3006 | ||
3007 | pointer = (char *) TYPE_ALLOC (type, num_bytes); | |
3008 | TYPE_FIELD_VIRTUAL_BITS (type) = (B_TYPE *) pointer; | |
3009 | } | |
3010 | #endif /* 0 */ | |
3011 | ||
3012 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), TYPE_N_BASECLASSES (type)); | |
3013 | ||
3014 | for (i = 0; i < TYPE_N_BASECLASSES (type); i++) | |
3015 | { | |
3016 | new = (struct nextfield *) xmalloc (sizeof (struct nextfield)); | |
b8c9b27d | 3017 | make_cleanup (xfree, new); |
c906108c | 3018 | memset (new, 0, sizeof (struct nextfield)); |
c5aa993b JM |
3019 | new->next = fip->list; |
3020 | fip->list = new; | |
c906108c SS |
3021 | FIELD_BITSIZE (new->field) = 0; /* this should be an unpacked field! */ |
3022 | ||
3023 | STABS_CONTINUE (pp, objfile); | |
3024 | switch (**pp) | |
3025 | { | |
c5aa993b JM |
3026 | case '0': |
3027 | /* Nothing to do. */ | |
3028 | break; | |
3029 | case '1': | |
3030 | SET_TYPE_FIELD_VIRTUAL (type, i); | |
3031 | break; | |
3032 | default: | |
3033 | /* Unknown character. Complain and treat it as non-virtual. */ | |
3034 | { | |
23136709 KB |
3035 | complaint (&symfile_complaints, |
3036 | "Unknown virtual character `%c' for baseclass", **pp); | |
c5aa993b | 3037 | } |
c906108c SS |
3038 | } |
3039 | ++(*pp); | |
3040 | ||
c5aa993b JM |
3041 | new->visibility = *(*pp)++; |
3042 | switch (new->visibility) | |
c906108c | 3043 | { |
c5aa993b JM |
3044 | case VISIBILITY_PRIVATE: |
3045 | case VISIBILITY_PROTECTED: | |
3046 | case VISIBILITY_PUBLIC: | |
3047 | break; | |
3048 | default: | |
3049 | /* Bad visibility format. Complain and treat it as | |
3050 | public. */ | |
3051 | { | |
23136709 KB |
3052 | complaint (&symfile_complaints, |
3053 | "Unknown visibility `%c' for baseclass", | |
3054 | new->visibility); | |
c5aa993b JM |
3055 | new->visibility = VISIBILITY_PUBLIC; |
3056 | } | |
c906108c SS |
3057 | } |
3058 | ||
3059 | { | |
3060 | int nbits; | |
c5aa993b | 3061 | |
c906108c SS |
3062 | /* The remaining value is the bit offset of the portion of the object |
3063 | corresponding to this baseclass. Always zero in the absence of | |
3064 | multiple inheritance. */ | |
3065 | ||
3066 | FIELD_BITPOS (new->field) = read_huge_number (pp, ',', &nbits); | |
3067 | if (nbits != 0) | |
3068 | return 0; | |
3069 | } | |
3070 | ||
3071 | /* The last piece of baseclass information is the type of the | |
c5aa993b JM |
3072 | base class. Read it, and remember it's type name as this |
3073 | field's name. */ | |
c906108c | 3074 | |
c5aa993b JM |
3075 | new->field.type = read_type (pp, objfile); |
3076 | new->field.name = type_name_no_tag (new->field.type); | |
c906108c SS |
3077 | |
3078 | /* skip trailing ';' and bump count of number of fields seen */ | |
3079 | if (**pp == ';') | |
3080 | (*pp)++; | |
3081 | else | |
3082 | return 0; | |
3083 | } | |
3084 | return 1; | |
3085 | } | |
3086 | ||
3087 | /* The tail end of stabs for C++ classes that contain a virtual function | |
3088 | pointer contains a tilde, a %, and a type number. | |
3089 | The type number refers to the base class (possibly this class itself) which | |
3090 | contains the vtable pointer for the current class. | |
3091 | ||
3092 | This function is called when we have parsed all the method declarations, | |
3093 | so we can look for the vptr base class info. */ | |
3094 | ||
3095 | static int | |
fba45db2 KB |
3096 | read_tilde_fields (struct field_info *fip, char **pp, struct type *type, |
3097 | struct objfile *objfile) | |
c906108c | 3098 | { |
52f0bd74 | 3099 | char *p; |
c906108c SS |
3100 | |
3101 | STABS_CONTINUE (pp, objfile); | |
3102 | ||
3103 | /* If we are positioned at a ';', then skip it. */ | |
3104 | if (**pp == ';') | |
3105 | { | |
3106 | (*pp)++; | |
3107 | } | |
3108 | ||
3109 | if (**pp == '~') | |
3110 | { | |
3111 | (*pp)++; | |
3112 | ||
3113 | if (**pp == '=' || **pp == '+' || **pp == '-') | |
3114 | { | |
3115 | /* Obsolete flags that used to indicate the presence | |
3116 | of constructors and/or destructors. */ | |
3117 | (*pp)++; | |
3118 | } | |
3119 | ||
3120 | /* Read either a '%' or the final ';'. */ | |
3121 | if (*(*pp)++ == '%') | |
3122 | { | |
3123 | /* The next number is the type number of the base class | |
3124 | (possibly our own class) which supplies the vtable for | |
3125 | this class. Parse it out, and search that class to find | |
3126 | its vtable pointer, and install those into TYPE_VPTR_BASETYPE | |
3127 | and TYPE_VPTR_FIELDNO. */ | |
3128 | ||
3129 | struct type *t; | |
3130 | int i; | |
3131 | ||
3132 | t = read_type (pp, objfile); | |
3133 | p = (*pp)++; | |
3134 | while (*p != '\0' && *p != ';') | |
3135 | { | |
3136 | p++; | |
3137 | } | |
3138 | if (*p == '\0') | |
3139 | { | |
3140 | /* Premature end of symbol. */ | |
3141 | return 0; | |
3142 | } | |
c5aa993b | 3143 | |
c906108c | 3144 | TYPE_VPTR_BASETYPE (type) = t; |
c5aa993b | 3145 | if (type == t) /* Our own class provides vtbl ptr */ |
c906108c SS |
3146 | { |
3147 | for (i = TYPE_NFIELDS (t) - 1; | |
3148 | i >= TYPE_N_BASECLASSES (t); | |
3149 | --i) | |
3150 | { | |
8343f86c DJ |
3151 | char *name = TYPE_FIELD_NAME (t, i); |
3152 | if (!strncmp (name, vptr_name, sizeof (vptr_name) - 2) | |
74451869 | 3153 | && is_cplus_marker (name[sizeof (vptr_name) - 2])) |
c906108c SS |
3154 | { |
3155 | TYPE_VPTR_FIELDNO (type) = i; | |
3156 | goto gotit; | |
3157 | } | |
3158 | } | |
3159 | /* Virtual function table field not found. */ | |
23136709 KB |
3160 | complaint (&symfile_complaints, |
3161 | "virtual function table pointer not found when defining class `%s'", | |
3162 | TYPE_NAME (type)); | |
c906108c SS |
3163 | return 0; |
3164 | } | |
3165 | else | |
3166 | { | |
3167 | TYPE_VPTR_FIELDNO (type) = TYPE_VPTR_FIELDNO (t); | |
3168 | } | |
3169 | ||
c5aa993b | 3170 | gotit: |
c906108c SS |
3171 | *pp = p + 1; |
3172 | } | |
3173 | } | |
3174 | return 1; | |
3175 | } | |
3176 | ||
3177 | static int | |
aa1ee363 | 3178 | attach_fn_fields_to_type (struct field_info *fip, struct type *type) |
c906108c | 3179 | { |
52f0bd74 | 3180 | int n; |
c906108c SS |
3181 | |
3182 | for (n = TYPE_NFN_FIELDS (type); | |
c5aa993b JM |
3183 | fip->fnlist != NULL; |
3184 | fip->fnlist = fip->fnlist->next) | |
c906108c | 3185 | { |
c5aa993b JM |
3186 | --n; /* Circumvent Sun3 compiler bug */ |
3187 | TYPE_FN_FIELDLISTS (type)[n] = fip->fnlist->fn_fieldlist; | |
c906108c SS |
3188 | } |
3189 | return 1; | |
3190 | } | |
3191 | ||
c906108c SS |
3192 | /* Create the vector of fields, and record how big it is. |
3193 | We need this info to record proper virtual function table information | |
3194 | for this class's virtual functions. */ | |
3195 | ||
3196 | static int | |
aa1ee363 | 3197 | attach_fields_to_type (struct field_info *fip, struct type *type, |
fba45db2 | 3198 | struct objfile *objfile) |
c906108c | 3199 | { |
52f0bd74 AC |
3200 | int nfields = 0; |
3201 | int non_public_fields = 0; | |
3202 | struct nextfield *scan; | |
c906108c SS |
3203 | |
3204 | /* Count up the number of fields that we have, as well as taking note of | |
3205 | whether or not there are any non-public fields, which requires us to | |
3206 | allocate and build the private_field_bits and protected_field_bits | |
3207 | bitfields. */ | |
3208 | ||
c5aa993b | 3209 | for (scan = fip->list; scan != NULL; scan = scan->next) |
c906108c SS |
3210 | { |
3211 | nfields++; | |
c5aa993b | 3212 | if (scan->visibility != VISIBILITY_PUBLIC) |
c906108c SS |
3213 | { |
3214 | non_public_fields++; | |
3215 | } | |
3216 | } | |
3217 | ||
3218 | /* Now we know how many fields there are, and whether or not there are any | |
3219 | non-public fields. Record the field count, allocate space for the | |
3220 | array of fields, and create blank visibility bitfields if necessary. */ | |
3221 | ||
3222 | TYPE_NFIELDS (type) = nfields; | |
3223 | TYPE_FIELDS (type) = (struct field *) | |
3224 | TYPE_ALLOC (type, sizeof (struct field) * nfields); | |
3225 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields); | |
3226 | ||
3227 | if (non_public_fields) | |
3228 | { | |
3229 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
3230 | ||
3231 | TYPE_FIELD_PRIVATE_BITS (type) = | |
3232 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
3233 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
3234 | ||
3235 | TYPE_FIELD_PROTECTED_BITS (type) = | |
3236 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
3237 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
3238 | ||
3239 | TYPE_FIELD_IGNORE_BITS (type) = | |
3240 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
3241 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
3242 | } | |
3243 | ||
3244 | /* Copy the saved-up fields into the field vector. Start from the head | |
3245 | of the list, adding to the tail of the field array, so that they end | |
3246 | up in the same order in the array in which they were added to the list. */ | |
3247 | ||
3248 | while (nfields-- > 0) | |
3249 | { | |
c5aa993b JM |
3250 | TYPE_FIELD (type, nfields) = fip->list->field; |
3251 | switch (fip->list->visibility) | |
c906108c | 3252 | { |
c5aa993b JM |
3253 | case VISIBILITY_PRIVATE: |
3254 | SET_TYPE_FIELD_PRIVATE (type, nfields); | |
3255 | break; | |
c906108c | 3256 | |
c5aa993b JM |
3257 | case VISIBILITY_PROTECTED: |
3258 | SET_TYPE_FIELD_PROTECTED (type, nfields); | |
3259 | break; | |
c906108c | 3260 | |
c5aa993b JM |
3261 | case VISIBILITY_IGNORE: |
3262 | SET_TYPE_FIELD_IGNORE (type, nfields); | |
3263 | break; | |
c906108c | 3264 | |
c5aa993b JM |
3265 | case VISIBILITY_PUBLIC: |
3266 | break; | |
c906108c | 3267 | |
c5aa993b JM |
3268 | default: |
3269 | /* Unknown visibility. Complain and treat it as public. */ | |
3270 | { | |
23136709 KB |
3271 | complaint (&symfile_complaints, "Unknown visibility `%c' for field", |
3272 | fip->list->visibility); | |
c5aa993b JM |
3273 | } |
3274 | break; | |
c906108c | 3275 | } |
c5aa993b | 3276 | fip->list = fip->list->next; |
c906108c SS |
3277 | } |
3278 | return 1; | |
3279 | } | |
3280 | ||
2ae1c2d2 | 3281 | |
2ae1c2d2 JB |
3282 | /* Complain that the compiler has emitted more than one definition for the |
3283 | structure type TYPE. */ | |
3284 | static void | |
3285 | complain_about_struct_wipeout (struct type *type) | |
3286 | { | |
3287 | char *name = ""; | |
3288 | char *kind = ""; | |
3289 | ||
3290 | if (TYPE_TAG_NAME (type)) | |
3291 | { | |
3292 | name = TYPE_TAG_NAME (type); | |
3293 | switch (TYPE_CODE (type)) | |
3294 | { | |
3295 | case TYPE_CODE_STRUCT: kind = "struct "; break; | |
3296 | case TYPE_CODE_UNION: kind = "union "; break; | |
3297 | case TYPE_CODE_ENUM: kind = "enum "; break; | |
3298 | default: kind = ""; | |
3299 | } | |
3300 | } | |
3301 | else if (TYPE_NAME (type)) | |
3302 | { | |
3303 | name = TYPE_NAME (type); | |
3304 | kind = ""; | |
3305 | } | |
3306 | else | |
3307 | { | |
3308 | name = "<unknown>"; | |
3309 | kind = ""; | |
3310 | } | |
3311 | ||
23136709 KB |
3312 | complaint (&symfile_complaints, |
3313 | "struct/union type gets multiply defined: %s%s", kind, name); | |
2ae1c2d2 JB |
3314 | } |
3315 | ||
3316 | ||
c906108c SS |
3317 | /* Read the description of a structure (or union type) and return an object |
3318 | describing the type. | |
3319 | ||
3320 | PP points to a character pointer that points to the next unconsumed token | |
3321 | in the the stabs string. For example, given stabs "A:T4=s4a:1,0,32;;", | |
3322 | *PP will point to "4a:1,0,32;;". | |
3323 | ||
3324 | TYPE points to an incomplete type that needs to be filled in. | |
3325 | ||
3326 | OBJFILE points to the current objfile from which the stabs information is | |
3327 | being read. (Note that it is redundant in that TYPE also contains a pointer | |
3328 | to this same objfile, so it might be a good idea to eliminate it. FIXME). | |
c5aa993b | 3329 | */ |
c906108c SS |
3330 | |
3331 | static struct type * | |
2ae1c2d2 JB |
3332 | read_struct_type (char **pp, struct type *type, enum type_code type_code, |
3333 | struct objfile *objfile) | |
c906108c SS |
3334 | { |
3335 | struct cleanup *back_to; | |
3336 | struct field_info fi; | |
3337 | ||
3338 | fi.list = NULL; | |
3339 | fi.fnlist = NULL; | |
3340 | ||
2ae1c2d2 JB |
3341 | /* When describing struct/union/class types in stabs, G++ always drops |
3342 | all qualifications from the name. So if you've got: | |
3343 | struct A { ... struct B { ... }; ... }; | |
3344 | then G++ will emit stabs for `struct A::B' that call it simply | |
3345 | `struct B'. Obviously, if you've got a real top-level definition for | |
3346 | `struct B', or other nested definitions, this is going to cause | |
3347 | problems. | |
3348 | ||
3349 | Obviously, GDB can't fix this by itself, but it can at least avoid | |
3350 | scribbling on existing structure type objects when new definitions | |
3351 | appear. */ | |
3352 | if (! (TYPE_CODE (type) == TYPE_CODE_UNDEF | |
3353 | || TYPE_STUB (type))) | |
3354 | { | |
3355 | complain_about_struct_wipeout (type); | |
3356 | ||
3357 | /* It's probably best to return the type unchanged. */ | |
3358 | return type; | |
3359 | } | |
3360 | ||
c906108c SS |
3361 | back_to = make_cleanup (null_cleanup, 0); |
3362 | ||
3363 | INIT_CPLUS_SPECIFIC (type); | |
2ae1c2d2 | 3364 | TYPE_CODE (type) = type_code; |
c906108c SS |
3365 | TYPE_FLAGS (type) &= ~TYPE_FLAG_STUB; |
3366 | ||
3367 | /* First comes the total size in bytes. */ | |
3368 | ||
3369 | { | |
3370 | int nbits; | |
3371 | TYPE_LENGTH (type) = read_huge_number (pp, 0, &nbits); | |
3372 | if (nbits != 0) | |
3373 | return error_type (pp, objfile); | |
3374 | } | |
3375 | ||
3376 | /* Now read the baseclasses, if any, read the regular C struct or C++ | |
3377 | class member fields, attach the fields to the type, read the C++ | |
3378 | member functions, attach them to the type, and then read any tilde | |
3379 | field (baseclass specifier for the class holding the main vtable). */ | |
3380 | ||
3381 | if (!read_baseclasses (&fi, pp, type, objfile) | |
3382 | || !read_struct_fields (&fi, pp, type, objfile) | |
3383 | || !attach_fields_to_type (&fi, type, objfile) | |
3384 | || !read_member_functions (&fi, pp, type, objfile) | |
3385 | || !attach_fn_fields_to_type (&fi, type) | |
3386 | || !read_tilde_fields (&fi, pp, type, objfile)) | |
3387 | { | |
3388 | type = error_type (pp, objfile); | |
3389 | } | |
3390 | ||
3391 | do_cleanups (back_to); | |
3392 | return (type); | |
3393 | } | |
3394 | ||
3395 | /* Read a definition of an array type, | |
3396 | and create and return a suitable type object. | |
3397 | Also creates a range type which represents the bounds of that | |
3398 | array. */ | |
3399 | ||
3400 | static struct type * | |
aa1ee363 | 3401 | read_array_type (char **pp, struct type *type, |
fba45db2 | 3402 | struct objfile *objfile) |
c906108c SS |
3403 | { |
3404 | struct type *index_type, *element_type, *range_type; | |
3405 | int lower, upper; | |
3406 | int adjustable = 0; | |
3407 | int nbits; | |
3408 | ||
3409 | /* Format of an array type: | |
3410 | "ar<index type>;lower;upper;<array_contents_type>". | |
3411 | OS9000: "arlower,upper;<array_contents_type>". | |
3412 | ||
3413 | Fortran adjustable arrays use Adigits or Tdigits for lower or upper; | |
3414 | for these, produce a type like float[][]. */ | |
3415 | ||
c906108c SS |
3416 | { |
3417 | index_type = read_type (pp, objfile); | |
3418 | if (**pp != ';') | |
3419 | /* Improper format of array type decl. */ | |
3420 | return error_type (pp, objfile); | |
3421 | ++*pp; | |
3422 | } | |
3423 | ||
3424 | if (!(**pp >= '0' && **pp <= '9') && **pp != '-') | |
3425 | { | |
3426 | (*pp)++; | |
3427 | adjustable = 1; | |
3428 | } | |
cdecafbe | 3429 | lower = read_huge_number (pp, ';', &nbits); |
cdecafbe | 3430 | |
c906108c SS |
3431 | if (nbits != 0) |
3432 | return error_type (pp, objfile); | |
3433 | ||
3434 | if (!(**pp >= '0' && **pp <= '9') && **pp != '-') | |
3435 | { | |
3436 | (*pp)++; | |
3437 | adjustable = 1; | |
3438 | } | |
3439 | upper = read_huge_number (pp, ';', &nbits); | |
3440 | if (nbits != 0) | |
3441 | return error_type (pp, objfile); | |
c5aa993b | 3442 | |
c906108c SS |
3443 | element_type = read_type (pp, objfile); |
3444 | ||
3445 | if (adjustable) | |
3446 | { | |
3447 | lower = 0; | |
3448 | upper = -1; | |
3449 | } | |
3450 | ||
3451 | range_type = | |
3452 | create_range_type ((struct type *) NULL, index_type, lower, upper); | |
3453 | type = create_array_type (type, element_type, range_type); | |
3454 | ||
3455 | return type; | |
3456 | } | |
3457 | ||
3458 | ||
3459 | /* Read a definition of an enumeration type, | |
3460 | and create and return a suitable type object. | |
3461 | Also defines the symbols that represent the values of the type. */ | |
3462 | ||
3463 | static struct type * | |
aa1ee363 | 3464 | read_enum_type (char **pp, struct type *type, |
fba45db2 | 3465 | struct objfile *objfile) |
c906108c | 3466 | { |
52f0bd74 | 3467 | char *p; |
c906108c | 3468 | char *name; |
52f0bd74 AC |
3469 | long n; |
3470 | struct symbol *sym; | |
c906108c SS |
3471 | int nsyms = 0; |
3472 | struct pending **symlist; | |
3473 | struct pending *osyms, *syms; | |
3474 | int o_nsyms; | |
3475 | int nbits; | |
3476 | int unsigned_enum = 1; | |
3477 | ||
3478 | #if 0 | |
3479 | /* FIXME! The stabs produced by Sun CC merrily define things that ought | |
3480 | to be file-scope, between N_FN entries, using N_LSYM. What's a mother | |
3481 | to do? For now, force all enum values to file scope. */ | |
3482 | if (within_function) | |
3483 | symlist = &local_symbols; | |
3484 | else | |
3485 | #endif | |
3486 | symlist = &file_symbols; | |
3487 | osyms = *symlist; | |
3488 | o_nsyms = osyms ? osyms->nsyms : 0; | |
3489 | ||
c906108c SS |
3490 | /* The aix4 compiler emits an extra field before the enum members; |
3491 | my guess is it's a type of some sort. Just ignore it. */ | |
3492 | if (**pp == '-') | |
3493 | { | |
3494 | /* Skip over the type. */ | |
3495 | while (**pp != ':') | |
c5aa993b | 3496 | (*pp)++; |
c906108c SS |
3497 | |
3498 | /* Skip over the colon. */ | |
3499 | (*pp)++; | |
3500 | } | |
3501 | ||
3502 | /* Read the value-names and their values. | |
3503 | The input syntax is NAME:VALUE,NAME:VALUE, and so on. | |
3504 | A semicolon or comma instead of a NAME means the end. */ | |
3505 | while (**pp && **pp != ';' && **pp != ',') | |
3506 | { | |
3507 | STABS_CONTINUE (pp, objfile); | |
3508 | p = *pp; | |
c5aa993b JM |
3509 | while (*p != ':') |
3510 | p++; | |
3511 | name = obsavestring (*pp, p - *pp, &objfile->symbol_obstack); | |
c906108c SS |
3512 | *pp = p + 1; |
3513 | n = read_huge_number (pp, ',', &nbits); | |
3514 | if (nbits != 0) | |
3515 | return error_type (pp, objfile); | |
3516 | ||
3517 | sym = (struct symbol *) | |
c5aa993b | 3518 | obstack_alloc (&objfile->symbol_obstack, sizeof (struct symbol)); |
c906108c | 3519 | memset (sym, 0, sizeof (struct symbol)); |
22abf04a | 3520 | DEPRECATED_SYMBOL_NAME (sym) = name; |
c5aa993b | 3521 | SYMBOL_LANGUAGE (sym) = current_subfile->language; |
c906108c | 3522 | SYMBOL_CLASS (sym) = LOC_CONST; |
176620f1 | 3523 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
3524 | SYMBOL_VALUE (sym) = n; |
3525 | if (n < 0) | |
3526 | unsigned_enum = 0; | |
3527 | add_symbol_to_list (sym, symlist); | |
3528 | nsyms++; | |
3529 | } | |
3530 | ||
3531 | if (**pp == ';') | |
3532 | (*pp)++; /* Skip the semicolon. */ | |
3533 | ||
3534 | /* Now fill in the fields of the type-structure. */ | |
3535 | ||
3536 | TYPE_LENGTH (type) = TARGET_INT_BIT / HOST_CHAR_BIT; | |
3537 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
3538 | TYPE_FLAGS (type) &= ~TYPE_FLAG_STUB; | |
3539 | if (unsigned_enum) | |
3540 | TYPE_FLAGS (type) |= TYPE_FLAG_UNSIGNED; | |
3541 | TYPE_NFIELDS (type) = nsyms; | |
3542 | TYPE_FIELDS (type) = (struct field *) | |
3543 | TYPE_ALLOC (type, sizeof (struct field) * nsyms); | |
3544 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nsyms); | |
3545 | ||
3546 | /* Find the symbols for the values and put them into the type. | |
3547 | The symbols can be found in the symlist that we put them on | |
3548 | to cause them to be defined. osyms contains the old value | |
3549 | of that symlist; everything up to there was defined by us. */ | |
3550 | /* Note that we preserve the order of the enum constants, so | |
3551 | that in something like "enum {FOO, LAST_THING=FOO}" we print | |
3552 | FOO, not LAST_THING. */ | |
3553 | ||
3554 | for (syms = *symlist, n = nsyms - 1; syms; syms = syms->next) | |
3555 | { | |
3556 | int last = syms == osyms ? o_nsyms : 0; | |
3557 | int j = syms->nsyms; | |
3558 | for (; --j >= last; --n) | |
3559 | { | |
3560 | struct symbol *xsym = syms->symbol[j]; | |
3561 | SYMBOL_TYPE (xsym) = type; | |
22abf04a | 3562 | TYPE_FIELD_NAME (type, n) = DEPRECATED_SYMBOL_NAME (xsym); |
c906108c SS |
3563 | TYPE_FIELD_BITPOS (type, n) = SYMBOL_VALUE (xsym); |
3564 | TYPE_FIELD_BITSIZE (type, n) = 0; | |
3565 | } | |
3566 | if (syms == osyms) | |
3567 | break; | |
3568 | } | |
3569 | ||
3570 | return type; | |
3571 | } | |
3572 | ||
3573 | /* Sun's ACC uses a somewhat saner method for specifying the builtin | |
3574 | typedefs in every file (for int, long, etc): | |
3575 | ||
c5aa993b JM |
3576 | type = b <signed> <width> <format type>; <offset>; <nbits> |
3577 | signed = u or s. | |
3578 | optional format type = c or b for char or boolean. | |
3579 | offset = offset from high order bit to start bit of type. | |
3580 | width is # bytes in object of this type, nbits is # bits in type. | |
c906108c SS |
3581 | |
3582 | The width/offset stuff appears to be for small objects stored in | |
3583 | larger ones (e.g. `shorts' in `int' registers). We ignore it for now, | |
3584 | FIXME. */ | |
3585 | ||
3586 | static struct type * | |
35a2f538 | 3587 | read_sun_builtin_type (char **pp, int typenums[2], struct objfile *objfile) |
c906108c SS |
3588 | { |
3589 | int type_bits; | |
3590 | int nbits; | |
3591 | int signed_type; | |
3592 | enum type_code code = TYPE_CODE_INT; | |
3593 | ||
3594 | switch (**pp) | |
3595 | { | |
c5aa993b JM |
3596 | case 's': |
3597 | signed_type = 1; | |
3598 | break; | |
3599 | case 'u': | |
3600 | signed_type = 0; | |
3601 | break; | |
3602 | default: | |
3603 | return error_type (pp, objfile); | |
c906108c SS |
3604 | } |
3605 | (*pp)++; | |
3606 | ||
3607 | /* For some odd reason, all forms of char put a c here. This is strange | |
3608 | because no other type has this honor. We can safely ignore this because | |
3609 | we actually determine 'char'acterness by the number of bits specified in | |
3610 | the descriptor. | |
3611 | Boolean forms, e.g Fortran logical*X, put a b here. */ | |
3612 | ||
3613 | if (**pp == 'c') | |
3614 | (*pp)++; | |
3615 | else if (**pp == 'b') | |
3616 | { | |
3617 | code = TYPE_CODE_BOOL; | |
3618 | (*pp)++; | |
3619 | } | |
3620 | ||
3621 | /* The first number appears to be the number of bytes occupied | |
3622 | by this type, except that unsigned short is 4 instead of 2. | |
3623 | Since this information is redundant with the third number, | |
3624 | we will ignore it. */ | |
3625 | read_huge_number (pp, ';', &nbits); | |
3626 | if (nbits != 0) | |
3627 | return error_type (pp, objfile); | |
3628 | ||
3629 | /* The second number is always 0, so ignore it too. */ | |
3630 | read_huge_number (pp, ';', &nbits); | |
3631 | if (nbits != 0) | |
3632 | return error_type (pp, objfile); | |
3633 | ||
3634 | /* The third number is the number of bits for this type. */ | |
3635 | type_bits = read_huge_number (pp, 0, &nbits); | |
3636 | if (nbits != 0) | |
3637 | return error_type (pp, objfile); | |
3638 | /* The type *should* end with a semicolon. If it are embedded | |
3639 | in a larger type the semicolon may be the only way to know where | |
3640 | the type ends. If this type is at the end of the stabstring we | |
3641 | can deal with the omitted semicolon (but we don't have to like | |
3642 | it). Don't bother to complain(), Sun's compiler omits the semicolon | |
3643 | for "void". */ | |
3644 | if (**pp == ';') | |
3645 | ++(*pp); | |
3646 | ||
3647 | if (type_bits == 0) | |
3648 | return init_type (TYPE_CODE_VOID, 1, | |
c5aa993b | 3649 | signed_type ? 0 : TYPE_FLAG_UNSIGNED, (char *) NULL, |
c906108c SS |
3650 | objfile); |
3651 | else | |
3652 | return init_type (code, | |
3653 | type_bits / TARGET_CHAR_BIT, | |
c5aa993b | 3654 | signed_type ? 0 : TYPE_FLAG_UNSIGNED, (char *) NULL, |
c906108c SS |
3655 | objfile); |
3656 | } | |
3657 | ||
3658 | static struct type * | |
35a2f538 | 3659 | read_sun_floating_type (char **pp, int typenums[2], struct objfile *objfile) |
c906108c SS |
3660 | { |
3661 | int nbits; | |
3662 | int details; | |
3663 | int nbytes; | |
f65ca430 | 3664 | struct type *rettype; |
c906108c SS |
3665 | |
3666 | /* The first number has more details about the type, for example | |
3667 | FN_COMPLEX. */ | |
3668 | details = read_huge_number (pp, ';', &nbits); | |
3669 | if (nbits != 0) | |
3670 | return error_type (pp, objfile); | |
3671 | ||
3672 | /* The second number is the number of bytes occupied by this type */ | |
3673 | nbytes = read_huge_number (pp, ';', &nbits); | |
3674 | if (nbits != 0) | |
3675 | return error_type (pp, objfile); | |
3676 | ||
3677 | if (details == NF_COMPLEX || details == NF_COMPLEX16 | |
3678 | || details == NF_COMPLEX32) | |
f65ca430 DJ |
3679 | { |
3680 | rettype = init_type (TYPE_CODE_COMPLEX, nbytes, 0, NULL, objfile); | |
3681 | TYPE_TARGET_TYPE (rettype) | |
3682 | = init_type (TYPE_CODE_FLT, nbytes / 2, 0, NULL, objfile); | |
3683 | return rettype; | |
3684 | } | |
c906108c SS |
3685 | |
3686 | return init_type (TYPE_CODE_FLT, nbytes, 0, NULL, objfile); | |
3687 | } | |
3688 | ||
3689 | /* Read a number from the string pointed to by *PP. | |
3690 | The value of *PP is advanced over the number. | |
3691 | If END is nonzero, the character that ends the | |
3692 | number must match END, or an error happens; | |
3693 | and that character is skipped if it does match. | |
3694 | If END is zero, *PP is left pointing to that character. | |
3695 | ||
3696 | If the number fits in a long, set *BITS to 0 and return the value. | |
3697 | If not, set *BITS to be the number of bits in the number and return 0. | |
3698 | ||
3699 | If encounter garbage, set *BITS to -1 and return 0. */ | |
3700 | ||
c2d11a7d | 3701 | static long |
fba45db2 | 3702 | read_huge_number (char **pp, int end, int *bits) |
c906108c SS |
3703 | { |
3704 | char *p = *pp; | |
3705 | int sign = 1; | |
c2d11a7d | 3706 | long n = 0; |
c906108c SS |
3707 | int radix = 10; |
3708 | char overflow = 0; | |
3709 | int nbits = 0; | |
3710 | int c; | |
c2d11a7d | 3711 | long upper_limit; |
c5aa993b | 3712 | |
c906108c SS |
3713 | if (*p == '-') |
3714 | { | |
3715 | sign = -1; | |
3716 | p++; | |
3717 | } | |
3718 | ||
3719 | /* Leading zero means octal. GCC uses this to output values larger | |
3720 | than an int (because that would be hard in decimal). */ | |
3721 | if (*p == '0') | |
3722 | { | |
3723 | radix = 8; | |
3724 | p++; | |
3725 | } | |
3726 | ||
1b831c93 | 3727 | upper_limit = LONG_MAX / radix; |
c906108c SS |
3728 | |
3729 | while ((c = *p++) >= '0' && c < ('0' + radix)) | |
3730 | { | |
3731 | if (n <= upper_limit) | |
3732 | { | |
3733 | n *= radix; | |
3734 | n += c - '0'; /* FIXME this overflows anyway */ | |
3735 | } | |
3736 | else | |
3737 | overflow = 1; | |
c5aa993b | 3738 | |
c906108c | 3739 | /* This depends on large values being output in octal, which is |
c5aa993b | 3740 | what GCC does. */ |
c906108c SS |
3741 | if (radix == 8) |
3742 | { | |
3743 | if (nbits == 0) | |
3744 | { | |
3745 | if (c == '0') | |
3746 | /* Ignore leading zeroes. */ | |
3747 | ; | |
3748 | else if (c == '1') | |
3749 | nbits = 1; | |
3750 | else if (c == '2' || c == '3') | |
3751 | nbits = 2; | |
3752 | else | |
3753 | nbits = 3; | |
3754 | } | |
3755 | else | |
3756 | nbits += 3; | |
3757 | } | |
3758 | } | |
3759 | if (end) | |
3760 | { | |
3761 | if (c && c != end) | |
3762 | { | |
3763 | if (bits != NULL) | |
3764 | *bits = -1; | |
3765 | return 0; | |
3766 | } | |
3767 | } | |
3768 | else | |
3769 | --p; | |
3770 | ||
3771 | *pp = p; | |
3772 | if (overflow) | |
3773 | { | |
3774 | if (nbits == 0) | |
3775 | { | |
3776 | /* Large decimal constants are an error (because it is hard to | |
3777 | count how many bits are in them). */ | |
3778 | if (bits != NULL) | |
3779 | *bits = -1; | |
3780 | return 0; | |
3781 | } | |
c5aa993b | 3782 | |
c906108c | 3783 | /* -0x7f is the same as 0x80. So deal with it by adding one to |
c5aa993b | 3784 | the number of bits. */ |
c906108c SS |
3785 | if (sign == -1) |
3786 | ++nbits; | |
3787 | if (bits) | |
3788 | *bits = nbits; | |
3789 | } | |
3790 | else | |
3791 | { | |
3792 | if (bits) | |
3793 | *bits = 0; | |
3794 | return n * sign; | |
3795 | } | |
3796 | /* It's *BITS which has the interesting information. */ | |
3797 | return 0; | |
3798 | } | |
3799 | ||
3800 | static struct type * | |
35a2f538 | 3801 | read_range_type (char **pp, int typenums[2], struct objfile *objfile) |
c906108c SS |
3802 | { |
3803 | char *orig_pp = *pp; | |
3804 | int rangenums[2]; | |
c2d11a7d | 3805 | long n2, n3; |
c906108c SS |
3806 | int n2bits, n3bits; |
3807 | int self_subrange; | |
3808 | struct type *result_type; | |
3809 | struct type *index_type = NULL; | |
3810 | ||
3811 | /* First comes a type we are a subrange of. | |
3812 | In C it is usually 0, 1 or the type being defined. */ | |
3813 | if (read_type_number (pp, rangenums) != 0) | |
3814 | return error_type (pp, objfile); | |
3815 | self_subrange = (rangenums[0] == typenums[0] && | |
3816 | rangenums[1] == typenums[1]); | |
3817 | ||
3818 | if (**pp == '=') | |
3819 | { | |
3820 | *pp = orig_pp; | |
3821 | index_type = read_type (pp, objfile); | |
3822 | } | |
3823 | ||
3824 | /* A semicolon should now follow; skip it. */ | |
3825 | if (**pp == ';') | |
3826 | (*pp)++; | |
3827 | ||
3828 | /* The remaining two operands are usually lower and upper bounds | |
3829 | of the range. But in some special cases they mean something else. */ | |
3830 | n2 = read_huge_number (pp, ';', &n2bits); | |
3831 | n3 = read_huge_number (pp, ';', &n3bits); | |
3832 | ||
3833 | if (n2bits == -1 || n3bits == -1) | |
3834 | return error_type (pp, objfile); | |
3835 | ||
3836 | if (index_type) | |
3837 | goto handle_true_range; | |
3838 | ||
3839 | /* If limits are huge, must be large integral type. */ | |
3840 | if (n2bits != 0 || n3bits != 0) | |
3841 | { | |
3842 | char got_signed = 0; | |
3843 | char got_unsigned = 0; | |
3844 | /* Number of bits in the type. */ | |
3845 | int nbits = 0; | |
3846 | ||
3847 | /* Range from 0 to <large number> is an unsigned large integral type. */ | |
3848 | if ((n2bits == 0 && n2 == 0) && n3bits != 0) | |
3849 | { | |
3850 | got_unsigned = 1; | |
3851 | nbits = n3bits; | |
3852 | } | |
3853 | /* Range from <large number> to <large number>-1 is a large signed | |
c5aa993b JM |
3854 | integral type. Take care of the case where <large number> doesn't |
3855 | fit in a long but <large number>-1 does. */ | |
c906108c SS |
3856 | else if ((n2bits != 0 && n3bits != 0 && n2bits == n3bits + 1) |
3857 | || (n2bits != 0 && n3bits == 0 | |
c2d11a7d JM |
3858 | && (n2bits == sizeof (long) * HOST_CHAR_BIT) |
3859 | && n3 == LONG_MAX)) | |
c906108c SS |
3860 | { |
3861 | got_signed = 1; | |
3862 | nbits = n2bits; | |
3863 | } | |
3864 | ||
3865 | if (got_signed || got_unsigned) | |
3866 | { | |
3867 | return init_type (TYPE_CODE_INT, nbits / TARGET_CHAR_BIT, | |
3868 | got_unsigned ? TYPE_FLAG_UNSIGNED : 0, NULL, | |
3869 | objfile); | |
3870 | } | |
3871 | else | |
3872 | return error_type (pp, objfile); | |
3873 | } | |
3874 | ||
3875 | /* A type defined as a subrange of itself, with bounds both 0, is void. */ | |
3876 | if (self_subrange && n2 == 0 && n3 == 0) | |
3877 | return init_type (TYPE_CODE_VOID, 1, 0, NULL, objfile); | |
3878 | ||
3879 | /* If n3 is zero and n2 is positive, we want a floating type, and n2 | |
3880 | is the width in bytes. | |
3881 | ||
3882 | Fortran programs appear to use this for complex types also. To | |
3883 | distinguish between floats and complex, g77 (and others?) seem | |
3884 | to use self-subranges for the complexes, and subranges of int for | |
3885 | the floats. | |
3886 | ||
3887 | Also note that for complexes, g77 sets n2 to the size of one of | |
3888 | the member floats, not the whole complex beast. My guess is that | |
3889 | this was to work well with pre-COMPLEX versions of gdb. */ | |
3890 | ||
3891 | if (n3 == 0 && n2 > 0) | |
3892 | { | |
1300f5dd JB |
3893 | struct type *float_type |
3894 | = init_type (TYPE_CODE_FLT, n2, 0, NULL, objfile); | |
3895 | ||
c906108c SS |
3896 | if (self_subrange) |
3897 | { | |
1300f5dd JB |
3898 | struct type *complex_type = |
3899 | init_type (TYPE_CODE_COMPLEX, 2 * n2, 0, NULL, objfile); | |
3900 | TYPE_TARGET_TYPE (complex_type) = float_type; | |
3901 | return complex_type; | |
c906108c SS |
3902 | } |
3903 | else | |
1300f5dd | 3904 | return float_type; |
c906108c SS |
3905 | } |
3906 | ||
3907 | /* If the upper bound is -1, it must really be an unsigned int. */ | |
3908 | ||
3909 | else if (n2 == 0 && n3 == -1) | |
3910 | { | |
3911 | /* It is unsigned int or unsigned long. */ | |
3912 | /* GCC 2.3.3 uses this for long long too, but that is just a GDB 3.5 | |
c5aa993b | 3913 | compatibility hack. */ |
c906108c SS |
3914 | return init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT, |
3915 | TYPE_FLAG_UNSIGNED, NULL, objfile); | |
3916 | } | |
3917 | ||
3918 | /* Special case: char is defined (Who knows why) as a subrange of | |
3919 | itself with range 0-127. */ | |
3920 | else if (self_subrange && n2 == 0 && n3 == 127) | |
973ccf8b | 3921 | return init_type (TYPE_CODE_INT, 1, TYPE_FLAG_NOSIGN, NULL, objfile); |
c906108c | 3922 | |
c906108c SS |
3923 | /* We used to do this only for subrange of self or subrange of int. */ |
3924 | else if (n2 == 0) | |
3925 | { | |
a0b3c4fd JM |
3926 | /* -1 is used for the upper bound of (4 byte) "unsigned int" and |
3927 | "unsigned long", and we already checked for that, | |
3928 | so don't need to test for it here. */ | |
3929 | ||
c906108c SS |
3930 | if (n3 < 0) |
3931 | /* n3 actually gives the size. */ | |
c5aa993b | 3932 | return init_type (TYPE_CODE_INT, -n3, TYPE_FLAG_UNSIGNED, |
c906108c | 3933 | NULL, objfile); |
c906108c | 3934 | |
7be570e7 | 3935 | /* Is n3 == 2**(8n)-1 for some integer n? Then it's an |
a0b3c4fd JM |
3936 | unsigned n-byte integer. But do require n to be a power of |
3937 | two; we don't want 3- and 5-byte integers flying around. */ | |
3938 | { | |
3939 | int bytes; | |
3940 | unsigned long bits; | |
3941 | ||
3942 | bits = n3; | |
3943 | for (bytes = 0; (bits & 0xff) == 0xff; bytes++) | |
3944 | bits >>= 8; | |
3945 | if (bits == 0 | |
3946 | && ((bytes - 1) & bytes) == 0) /* "bytes is a power of two" */ | |
3947 | return init_type (TYPE_CODE_INT, bytes, TYPE_FLAG_UNSIGNED, NULL, | |
3948 | objfile); | |
3949 | } | |
c906108c SS |
3950 | } |
3951 | /* I think this is for Convex "long long". Since I don't know whether | |
3952 | Convex sets self_subrange, I also accept that particular size regardless | |
3953 | of self_subrange. */ | |
3954 | else if (n3 == 0 && n2 < 0 | |
3955 | && (self_subrange | |
c5aa993b JM |
3956 | || n2 == -TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT)) |
3957 | return init_type (TYPE_CODE_INT, -n2, 0, NULL, objfile); | |
3958 | else if (n2 == -n3 - 1) | |
c906108c SS |
3959 | { |
3960 | if (n3 == 0x7f) | |
3961 | return init_type (TYPE_CODE_INT, 1, 0, NULL, objfile); | |
3962 | if (n3 == 0x7fff) | |
3963 | return init_type (TYPE_CODE_INT, 2, 0, NULL, objfile); | |
3964 | if (n3 == 0x7fffffff) | |
3965 | return init_type (TYPE_CODE_INT, 4, 0, NULL, objfile); | |
3966 | } | |
3967 | ||
3968 | /* We have a real range type on our hands. Allocate space and | |
3969 | return a real pointer. */ | |
c5aa993b | 3970 | handle_true_range: |
c906108c SS |
3971 | |
3972 | if (self_subrange) | |
3973 | index_type = builtin_type_int; | |
3974 | else | |
3975 | index_type = *dbx_lookup_type (rangenums); | |
3976 | if (index_type == NULL) | |
3977 | { | |
3978 | /* Does this actually ever happen? Is that why we are worrying | |
3979 | about dealing with it rather than just calling error_type? */ | |
3980 | ||
3981 | static struct type *range_type_index; | |
3982 | ||
23136709 KB |
3983 | complaint (&symfile_complaints, |
3984 | "base type %d of range type is not defined", rangenums[1]); | |
c906108c SS |
3985 | if (range_type_index == NULL) |
3986 | range_type_index = | |
3987 | init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT, | |
3988 | 0, "range type index type", NULL); | |
3989 | index_type = range_type_index; | |
3990 | } | |
3991 | ||
3992 | result_type = create_range_type ((struct type *) NULL, index_type, n2, n3); | |
3993 | return (result_type); | |
3994 | } | |
3995 | ||
3996 | /* Read in an argument list. This is a list of types, separated by commas | |
3997 | and terminated with END. Return the list of types read in, or (struct type | |
3998 | **)-1 if there is an error. */ | |
3999 | ||
ad2f7632 DJ |
4000 | static struct field * |
4001 | read_args (char **pp, int end, struct objfile *objfile, int *nargsp, | |
4002 | int *varargsp) | |
c906108c SS |
4003 | { |
4004 | /* FIXME! Remove this arbitrary limit! */ | |
ad2f7632 DJ |
4005 | struct type *types[1024]; /* allow for fns of 1023 parameters */ |
4006 | int n = 0, i; | |
4007 | struct field *rval; | |
c906108c SS |
4008 | |
4009 | while (**pp != end) | |
4010 | { | |
4011 | if (**pp != ',') | |
4012 | /* Invalid argument list: no ','. */ | |
ad2f7632 | 4013 | return (struct field *) -1; |
c906108c SS |
4014 | (*pp)++; |
4015 | STABS_CONTINUE (pp, objfile); | |
4016 | types[n++] = read_type (pp, objfile); | |
4017 | } | |
4018 | (*pp)++; /* get past `end' (the ':' character) */ | |
4019 | ||
ad2f7632 DJ |
4020 | if (TYPE_CODE (types[n - 1]) != TYPE_CODE_VOID) |
4021 | *varargsp = 1; | |
c906108c SS |
4022 | else |
4023 | { | |
ad2f7632 DJ |
4024 | n--; |
4025 | *varargsp = 0; | |
c906108c | 4026 | } |
ad2f7632 DJ |
4027 | |
4028 | rval = (struct field *) xmalloc (n * sizeof (struct field)); | |
4029 | memset (rval, 0, n * sizeof (struct field)); | |
4030 | for (i = 0; i < n; i++) | |
4031 | rval[i].type = types[i]; | |
4032 | *nargsp = n; | |
c906108c SS |
4033 | return rval; |
4034 | } | |
4035 | \f | |
4036 | /* Common block handling. */ | |
4037 | ||
4038 | /* List of symbols declared since the last BCOMM. This list is a tail | |
4039 | of local_symbols. When ECOMM is seen, the symbols on the list | |
4040 | are noted so their proper addresses can be filled in later, | |
4041 | using the common block base address gotten from the assembler | |
4042 | stabs. */ | |
4043 | ||
4044 | static struct pending *common_block; | |
4045 | static int common_block_i; | |
4046 | ||
4047 | /* Name of the current common block. We get it from the BCOMM instead of the | |
4048 | ECOMM to match IBM documentation (even though IBM puts the name both places | |
4049 | like everyone else). */ | |
4050 | static char *common_block_name; | |
4051 | ||
4052 | /* Process a N_BCOMM symbol. The storage for NAME is not guaranteed | |
4053 | to remain after this function returns. */ | |
4054 | ||
4055 | void | |
fba45db2 | 4056 | common_block_start (char *name, struct objfile *objfile) |
c906108c SS |
4057 | { |
4058 | if (common_block_name != NULL) | |
4059 | { | |
23136709 KB |
4060 | complaint (&symfile_complaints, |
4061 | "Invalid symbol data: common block within common block"); | |
c906108c SS |
4062 | } |
4063 | common_block = local_symbols; | |
4064 | common_block_i = local_symbols ? local_symbols->nsyms : 0; | |
4065 | common_block_name = obsavestring (name, strlen (name), | |
c5aa993b | 4066 | &objfile->symbol_obstack); |
c906108c SS |
4067 | } |
4068 | ||
4069 | /* Process a N_ECOMM symbol. */ | |
4070 | ||
4071 | void | |
fba45db2 | 4072 | common_block_end (struct objfile *objfile) |
c906108c SS |
4073 | { |
4074 | /* Symbols declared since the BCOMM are to have the common block | |
4075 | start address added in when we know it. common_block and | |
4076 | common_block_i point to the first symbol after the BCOMM in | |
4077 | the local_symbols list; copy the list and hang it off the | |
4078 | symbol for the common block name for later fixup. */ | |
4079 | int i; | |
4080 | struct symbol *sym; | |
4081 | struct pending *new = 0; | |
4082 | struct pending *next; | |
4083 | int j; | |
4084 | ||
4085 | if (common_block_name == NULL) | |
4086 | { | |
23136709 | 4087 | complaint (&symfile_complaints, "ECOMM symbol unmatched by BCOMM"); |
c906108c SS |
4088 | return; |
4089 | } | |
4090 | ||
c5aa993b JM |
4091 | sym = (struct symbol *) |
4092 | obstack_alloc (&objfile->symbol_obstack, sizeof (struct symbol)); | |
c906108c SS |
4093 | memset (sym, 0, sizeof (struct symbol)); |
4094 | /* Note: common_block_name already saved on symbol_obstack */ | |
22abf04a | 4095 | DEPRECATED_SYMBOL_NAME (sym) = common_block_name; |
c906108c SS |
4096 | SYMBOL_CLASS (sym) = LOC_BLOCK; |
4097 | ||
4098 | /* Now we copy all the symbols which have been defined since the BCOMM. */ | |
4099 | ||
4100 | /* Copy all the struct pendings before common_block. */ | |
4101 | for (next = local_symbols; | |
4102 | next != NULL && next != common_block; | |
4103 | next = next->next) | |
4104 | { | |
4105 | for (j = 0; j < next->nsyms; j++) | |
4106 | add_symbol_to_list (next->symbol[j], &new); | |
4107 | } | |
4108 | ||
4109 | /* Copy however much of COMMON_BLOCK we need. If COMMON_BLOCK is | |
4110 | NULL, it means copy all the local symbols (which we already did | |
4111 | above). */ | |
4112 | ||
4113 | if (common_block != NULL) | |
4114 | for (j = common_block_i; j < common_block->nsyms; j++) | |
4115 | add_symbol_to_list (common_block->symbol[j], &new); | |
4116 | ||
4117 | SYMBOL_TYPE (sym) = (struct type *) new; | |
4118 | ||
4119 | /* Should we be putting local_symbols back to what it was? | |
4120 | Does it matter? */ | |
4121 | ||
22abf04a | 4122 | i = hashname (DEPRECATED_SYMBOL_NAME (sym)); |
c906108c SS |
4123 | SYMBOL_VALUE_CHAIN (sym) = global_sym_chain[i]; |
4124 | global_sym_chain[i] = sym; | |
4125 | common_block_name = NULL; | |
4126 | } | |
4127 | ||
4128 | /* Add a common block's start address to the offset of each symbol | |
4129 | declared to be in it (by being between a BCOMM/ECOMM pair that uses | |
4130 | the common block name). */ | |
4131 | ||
4132 | static void | |
fba45db2 | 4133 | fix_common_block (struct symbol *sym, int valu) |
c906108c SS |
4134 | { |
4135 | struct pending *next = (struct pending *) SYMBOL_TYPE (sym); | |
c5aa993b | 4136 | for (; next; next = next->next) |
c906108c | 4137 | { |
aa1ee363 | 4138 | int j; |
c906108c SS |
4139 | for (j = next->nsyms - 1; j >= 0; j--) |
4140 | SYMBOL_VALUE_ADDRESS (next->symbol[j]) += valu; | |
4141 | } | |
4142 | } | |
c5aa993b | 4143 | \f |
c906108c SS |
4144 | |
4145 | ||
c906108c SS |
4146 | /* What about types defined as forward references inside of a small lexical |
4147 | scope? */ | |
4148 | /* Add a type to the list of undefined types to be checked through | |
4149 | once this file has been read in. */ | |
4150 | ||
a7a48797 | 4151 | static void |
fba45db2 | 4152 | add_undefined_type (struct type *type) |
c906108c SS |
4153 | { |
4154 | if (undef_types_length == undef_types_allocated) | |
4155 | { | |
4156 | undef_types_allocated *= 2; | |
4157 | undef_types = (struct type **) | |
4158 | xrealloc ((char *) undef_types, | |
4159 | undef_types_allocated * sizeof (struct type *)); | |
4160 | } | |
4161 | undef_types[undef_types_length++] = type; | |
4162 | } | |
4163 | ||
4164 | /* Go through each undefined type, see if it's still undefined, and fix it | |
4165 | up if possible. We have two kinds of undefined types: | |
4166 | ||
4167 | TYPE_CODE_ARRAY: Array whose target type wasn't defined yet. | |
c5aa993b JM |
4168 | Fix: update array length using the element bounds |
4169 | and the target type's length. | |
c906108c | 4170 | TYPE_CODE_STRUCT, TYPE_CODE_UNION: Structure whose fields were not |
c5aa993b JM |
4171 | yet defined at the time a pointer to it was made. |
4172 | Fix: Do a full lookup on the struct/union tag. */ | |
c906108c | 4173 | void |
fba45db2 | 4174 | cleanup_undefined_types (void) |
c906108c SS |
4175 | { |
4176 | struct type **type; | |
4177 | ||
4178 | for (type = undef_types; type < undef_types + undef_types_length; type++) | |
4179 | { | |
4180 | switch (TYPE_CODE (*type)) | |
4181 | { | |
4182 | ||
c5aa993b JM |
4183 | case TYPE_CODE_STRUCT: |
4184 | case TYPE_CODE_UNION: | |
4185 | case TYPE_CODE_ENUM: | |
c906108c SS |
4186 | { |
4187 | /* Check if it has been defined since. Need to do this here | |
4188 | as well as in check_typedef to deal with the (legitimate in | |
4189 | C though not C++) case of several types with the same name | |
4190 | in different source files. */ | |
74a9bb82 | 4191 | if (TYPE_STUB (*type)) |
c906108c SS |
4192 | { |
4193 | struct pending *ppt; | |
4194 | int i; | |
4195 | /* Name of the type, without "struct" or "union" */ | |
4196 | char *typename = TYPE_TAG_NAME (*type); | |
4197 | ||
4198 | if (typename == NULL) | |
4199 | { | |
23136709 | 4200 | complaint (&symfile_complaints, "need a type name"); |
c906108c SS |
4201 | break; |
4202 | } | |
4203 | for (ppt = file_symbols; ppt; ppt = ppt->next) | |
4204 | { | |
4205 | for (i = 0; i < ppt->nsyms; i++) | |
4206 | { | |
4207 | struct symbol *sym = ppt->symbol[i]; | |
c5aa993b | 4208 | |
c906108c | 4209 | if (SYMBOL_CLASS (sym) == LOC_TYPEDEF |
176620f1 | 4210 | && SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN |
c906108c SS |
4211 | && (TYPE_CODE (SYMBOL_TYPE (sym)) == |
4212 | TYPE_CODE (*type)) | |
6314a349 | 4213 | && strcmp (DEPRECATED_SYMBOL_NAME (sym), typename) == 0) |
13a393b0 | 4214 | replace_type (*type, SYMBOL_TYPE (sym)); |
c906108c SS |
4215 | } |
4216 | } | |
4217 | } | |
4218 | } | |
4219 | break; | |
4220 | ||
4221 | default: | |
4222 | { | |
23136709 KB |
4223 | complaint (&symfile_complaints, |
4224 | "GDB internal error. cleanup_undefined_types with bad type %d.", | |
4225 | TYPE_CODE (*type)); | |
c906108c SS |
4226 | } |
4227 | break; | |
4228 | } | |
4229 | } | |
4230 | ||
4231 | undef_types_length = 0; | |
4232 | } | |
4233 | ||
4234 | /* Scan through all of the global symbols defined in the object file, | |
4235 | assigning values to the debugging symbols that need to be assigned | |
4236 | to. Get these symbols from the minimal symbol table. */ | |
4237 | ||
4238 | void | |
fba45db2 | 4239 | scan_file_globals (struct objfile *objfile) |
c906108c SS |
4240 | { |
4241 | int hash; | |
4242 | struct minimal_symbol *msymbol; | |
507836c0 | 4243 | struct symbol *sym, *prev; |
c906108c SS |
4244 | struct objfile *resolve_objfile; |
4245 | ||
4246 | /* SVR4 based linkers copy referenced global symbols from shared | |
4247 | libraries to the main executable. | |
4248 | If we are scanning the symbols for a shared library, try to resolve | |
4249 | them from the minimal symbols of the main executable first. */ | |
4250 | ||
4251 | if (symfile_objfile && objfile != symfile_objfile) | |
4252 | resolve_objfile = symfile_objfile; | |
4253 | else | |
4254 | resolve_objfile = objfile; | |
4255 | ||
4256 | while (1) | |
4257 | { | |
4258 | /* Avoid expensive loop through all minimal symbols if there are | |
c5aa993b | 4259 | no unresolved symbols. */ |
c906108c SS |
4260 | for (hash = 0; hash < HASHSIZE; hash++) |
4261 | { | |
4262 | if (global_sym_chain[hash]) | |
4263 | break; | |
4264 | } | |
4265 | if (hash >= HASHSIZE) | |
4266 | return; | |
4267 | ||
c5aa993b | 4268 | for (msymbol = resolve_objfile->msymbols; |
22abf04a | 4269 | msymbol && DEPRECATED_SYMBOL_NAME (msymbol) != NULL; |
c906108c SS |
4270 | msymbol++) |
4271 | { | |
4272 | QUIT; | |
4273 | ||
4274 | /* Skip static symbols. */ | |
4275 | switch (MSYMBOL_TYPE (msymbol)) | |
4276 | { | |
4277 | case mst_file_text: | |
4278 | case mst_file_data: | |
4279 | case mst_file_bss: | |
4280 | continue; | |
4281 | default: | |
4282 | break; | |
4283 | } | |
4284 | ||
4285 | prev = NULL; | |
4286 | ||
4287 | /* Get the hash index and check all the symbols | |
4288 | under that hash index. */ | |
4289 | ||
22abf04a | 4290 | hash = hashname (DEPRECATED_SYMBOL_NAME (msymbol)); |
c906108c SS |
4291 | |
4292 | for (sym = global_sym_chain[hash]; sym;) | |
4293 | { | |
22abf04a | 4294 | if (DEPRECATED_SYMBOL_NAME (msymbol)[0] == DEPRECATED_SYMBOL_NAME (sym)[0] && |
6314a349 | 4295 | strcmp (DEPRECATED_SYMBOL_NAME (msymbol) + 1, DEPRECATED_SYMBOL_NAME (sym) + 1) == 0) |
c906108c | 4296 | { |
c906108c SS |
4297 | /* Splice this symbol out of the hash chain and |
4298 | assign the value we have to it. */ | |
4299 | if (prev) | |
4300 | { | |
4301 | SYMBOL_VALUE_CHAIN (prev) = SYMBOL_VALUE_CHAIN (sym); | |
4302 | } | |
4303 | else | |
4304 | { | |
4305 | global_sym_chain[hash] = SYMBOL_VALUE_CHAIN (sym); | |
4306 | } | |
c5aa993b | 4307 | |
c906108c SS |
4308 | /* Check to see whether we need to fix up a common block. */ |
4309 | /* Note: this code might be executed several times for | |
4310 | the same symbol if there are multiple references. */ | |
507836c0 | 4311 | if (sym) |
c906108c | 4312 | { |
507836c0 | 4313 | if (SYMBOL_CLASS (sym) == LOC_BLOCK) |
c906108c | 4314 | { |
507836c0 | 4315 | fix_common_block (sym, |
c906108c SS |
4316 | SYMBOL_VALUE_ADDRESS (msymbol)); |
4317 | } | |
4318 | else | |
4319 | { | |
507836c0 | 4320 | SYMBOL_VALUE_ADDRESS (sym) |
c906108c SS |
4321 | = SYMBOL_VALUE_ADDRESS (msymbol); |
4322 | } | |
507836c0 | 4323 | SYMBOL_SECTION (sym) = SYMBOL_SECTION (msymbol); |
c906108c SS |
4324 | } |
4325 | ||
c906108c SS |
4326 | if (prev) |
4327 | { | |
4328 | sym = SYMBOL_VALUE_CHAIN (prev); | |
4329 | } | |
4330 | else | |
4331 | { | |
4332 | sym = global_sym_chain[hash]; | |
4333 | } | |
4334 | } | |
4335 | else | |
4336 | { | |
4337 | prev = sym; | |
4338 | sym = SYMBOL_VALUE_CHAIN (sym); | |
4339 | } | |
4340 | } | |
4341 | } | |
4342 | if (resolve_objfile == objfile) | |
4343 | break; | |
4344 | resolve_objfile = objfile; | |
4345 | } | |
4346 | ||
4347 | /* Change the storage class of any remaining unresolved globals to | |
4348 | LOC_UNRESOLVED and remove them from the chain. */ | |
4349 | for (hash = 0; hash < HASHSIZE; hash++) | |
4350 | { | |
4351 | sym = global_sym_chain[hash]; | |
4352 | while (sym) | |
4353 | { | |
4354 | prev = sym; | |
4355 | sym = SYMBOL_VALUE_CHAIN (sym); | |
4356 | ||
4357 | /* Change the symbol address from the misleading chain value | |
4358 | to address zero. */ | |
4359 | SYMBOL_VALUE_ADDRESS (prev) = 0; | |
4360 | ||
4361 | /* Complain about unresolved common block symbols. */ | |
4362 | if (SYMBOL_CLASS (prev) == LOC_STATIC) | |
4363 | SYMBOL_CLASS (prev) = LOC_UNRESOLVED; | |
4364 | else | |
23136709 KB |
4365 | complaint (&symfile_complaints, |
4366 | "%s: common block `%s' from global_sym_chain unresolved", | |
22abf04a | 4367 | objfile->name, DEPRECATED_SYMBOL_NAME (prev)); |
c906108c SS |
4368 | } |
4369 | } | |
4370 | memset (global_sym_chain, 0, sizeof (global_sym_chain)); | |
4371 | } | |
4372 | ||
4373 | /* Initialize anything that needs initializing when starting to read | |
4374 | a fresh piece of a symbol file, e.g. reading in the stuff corresponding | |
4375 | to a psymtab. */ | |
4376 | ||
4377 | void | |
fba45db2 | 4378 | stabsread_init (void) |
c906108c SS |
4379 | { |
4380 | } | |
4381 | ||
4382 | /* Initialize anything that needs initializing when a completely new | |
4383 | symbol file is specified (not just adding some symbols from another | |
4384 | file, e.g. a shared library). */ | |
4385 | ||
4386 | void | |
fba45db2 | 4387 | stabsread_new_init (void) |
c906108c SS |
4388 | { |
4389 | /* Empty the hash table of global syms looking for values. */ | |
4390 | memset (global_sym_chain, 0, sizeof (global_sym_chain)); | |
4391 | } | |
4392 | ||
4393 | /* Initialize anything that needs initializing at the same time as | |
4394 | start_symtab() is called. */ | |
4395 | ||
c5aa993b | 4396 | void |
fba45db2 | 4397 | start_stabs (void) |
c906108c SS |
4398 | { |
4399 | global_stabs = NULL; /* AIX COFF */ | |
4400 | /* Leave FILENUM of 0 free for builtin types and this file's types. */ | |
4401 | n_this_object_header_files = 1; | |
4402 | type_vector_length = 0; | |
4403 | type_vector = (struct type **) 0; | |
4404 | ||
4405 | /* FIXME: If common_block_name is not already NULL, we should complain(). */ | |
4406 | common_block_name = NULL; | |
c906108c SS |
4407 | } |
4408 | ||
4409 | /* Call after end_symtab() */ | |
4410 | ||
c5aa993b | 4411 | void |
fba45db2 | 4412 | end_stabs (void) |
c906108c SS |
4413 | { |
4414 | if (type_vector) | |
4415 | { | |
b8c9b27d | 4416 | xfree (type_vector); |
c906108c SS |
4417 | } |
4418 | type_vector = 0; | |
4419 | type_vector_length = 0; | |
4420 | previous_stab_code = 0; | |
4421 | } | |
4422 | ||
4423 | void | |
fba45db2 | 4424 | finish_global_stabs (struct objfile *objfile) |
c906108c SS |
4425 | { |
4426 | if (global_stabs) | |
4427 | { | |
4428 | patch_block_stabs (global_symbols, global_stabs, objfile); | |
b8c9b27d | 4429 | xfree (global_stabs); |
c906108c SS |
4430 | global_stabs = NULL; |
4431 | } | |
4432 | } | |
4433 | ||
7e1d63ec AF |
4434 | /* Find the end of the name, delimited by a ':', but don't match |
4435 | ObjC symbols which look like -[Foo bar::]:bla. */ | |
4436 | static char * | |
4437 | find_name_end (char *name) | |
4438 | { | |
4439 | char *s = name; | |
4440 | if (s[0] == '-' || *s == '+') | |
4441 | { | |
4442 | /* Must be an ObjC method symbol. */ | |
4443 | if (s[1] != '[') | |
4444 | { | |
4445 | error ("invalid symbol name \"%s\"", name); | |
4446 | } | |
4447 | s = strchr (s, ']'); | |
4448 | if (s == NULL) | |
4449 | { | |
4450 | error ("invalid symbol name \"%s\"", name); | |
4451 | } | |
4452 | return strchr (s, ':'); | |
4453 | } | |
4454 | else | |
4455 | { | |
4456 | return strchr (s, ':'); | |
4457 | } | |
4458 | } | |
4459 | ||
c906108c SS |
4460 | /* Initializer for this module */ |
4461 | ||
4462 | void | |
fba45db2 | 4463 | _initialize_stabsread (void) |
c906108c SS |
4464 | { |
4465 | undef_types_allocated = 20; | |
4466 | undef_types_length = 0; | |
4467 | undef_types = (struct type **) | |
4468 | xmalloc (undef_types_allocated * sizeof (struct type *)); | |
4469 | } |