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 | |
1121 | #ifndef USE_REGISTER_NOT_ARG | |
192cb3d4 MK |
1122 | && gdbarch_stabs_argument_has_addr (current_gdbarch, |
1123 | SYMBOL_TYPE (sym)) | |
c906108c | 1124 | #endif |
c5aa993b | 1125 | ) |
c906108c SS |
1126 | { |
1127 | struct symbol *prev_sym; | |
1128 | prev_sym = local_symbols->symbol[local_symbols->nsyms - 1]; | |
1129 | if ((SYMBOL_CLASS (prev_sym) == LOC_REF_ARG | |
1130 | || SYMBOL_CLASS (prev_sym) == LOC_ARG) | |
22abf04a | 1131 | && STREQ (DEPRECATED_SYMBOL_NAME (prev_sym), DEPRECATED_SYMBOL_NAME (sym))) |
c906108c SS |
1132 | { |
1133 | SYMBOL_CLASS (prev_sym) = LOC_REGPARM; | |
1134 | /* Use the type from the LOC_REGISTER; that is the type | |
1135 | that is actually in that register. */ | |
1136 | SYMBOL_TYPE (prev_sym) = SYMBOL_TYPE (sym); | |
1137 | SYMBOL_VALUE (prev_sym) = SYMBOL_VALUE (sym); | |
1138 | sym = prev_sym; | |
1139 | break; | |
1140 | } | |
1141 | } | |
c5aa993b | 1142 | add_symbol_to_list (sym, &local_symbols); |
c906108c SS |
1143 | } |
1144 | else | |
c5aa993b | 1145 | add_symbol_to_list (sym, &file_symbols); |
c906108c SS |
1146 | break; |
1147 | ||
1148 | case 'S': | |
1149 | /* Static symbol at top level of file */ | |
1150 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
1151 | SYMBOL_CLASS (sym) = LOC_STATIC; | |
1152 | SYMBOL_VALUE_ADDRESS (sym) = valu; | |
1153 | #ifdef STATIC_TRANSFORM_NAME | |
22abf04a | 1154 | if (IS_STATIC_TRANSFORM_NAME (DEPRECATED_SYMBOL_NAME (sym))) |
c5aa993b JM |
1155 | { |
1156 | struct minimal_symbol *msym; | |
22abf04a | 1157 | msym = lookup_minimal_symbol (DEPRECATED_SYMBOL_NAME (sym), NULL, objfile); |
c5aa993b JM |
1158 | if (msym != NULL) |
1159 | { | |
22abf04a | 1160 | DEPRECATED_SYMBOL_NAME (sym) = STATIC_TRANSFORM_NAME (DEPRECATED_SYMBOL_NAME (sym)); |
c5aa993b JM |
1161 | SYMBOL_VALUE_ADDRESS (sym) = SYMBOL_VALUE_ADDRESS (msym); |
1162 | } | |
1163 | } | |
c906108c | 1164 | #endif |
176620f1 | 1165 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1166 | add_symbol_to_list (sym, &file_symbols); |
1167 | break; | |
1168 | ||
1169 | case 't': | |
e2cd42dd | 1170 | /* Typedef */ |
c906108c SS |
1171 | SYMBOL_TYPE (sym) = read_type (&p, objfile); |
1172 | ||
1173 | /* For a nameless type, we don't want a create a symbol, thus we | |
c5aa993b JM |
1174 | did not use `sym'. Return without further processing. */ |
1175 | if (nameless) | |
1176 | return NULL; | |
c906108c SS |
1177 | |
1178 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
1179 | SYMBOL_VALUE (sym) = valu; | |
176620f1 | 1180 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c | 1181 | /* C++ vagaries: we may have a type which is derived from |
c5aa993b JM |
1182 | a base type which did not have its name defined when the |
1183 | derived class was output. We fill in the derived class's | |
1184 | base part member's name here in that case. */ | |
c906108c SS |
1185 | if (TYPE_NAME (SYMBOL_TYPE (sym)) != NULL) |
1186 | if ((TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_STRUCT | |
1187 | || TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_UNION) | |
1188 | && TYPE_N_BASECLASSES (SYMBOL_TYPE (sym))) | |
1189 | { | |
1190 | int j; | |
1191 | for (j = TYPE_N_BASECLASSES (SYMBOL_TYPE (sym)) - 1; j >= 0; j--) | |
1192 | if (TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym), j) == 0) | |
1193 | TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym), j) = | |
1194 | type_name_no_tag (TYPE_BASECLASS (SYMBOL_TYPE (sym), j)); | |
1195 | } | |
1196 | ||
1197 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == NULL) | |
1198 | { | |
1199 | /* gcc-2.6 or later (when using -fvtable-thunks) | |
1200 | emits a unique named type for a vtable entry. | |
1201 | Some gdb code depends on that specific name. */ | |
1202 | extern const char vtbl_ptr_name[]; | |
1203 | ||
1204 | if ((TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_PTR | |
22abf04a | 1205 | && strcmp (DEPRECATED_SYMBOL_NAME (sym), vtbl_ptr_name)) |
c906108c SS |
1206 | || TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_FUNC) |
1207 | { | |
1208 | /* If we are giving a name to a type such as "pointer to | |
c5aa993b JM |
1209 | foo" or "function returning foo", we better not set |
1210 | the TYPE_NAME. If the program contains "typedef char | |
1211 | *caddr_t;", we don't want all variables of type char | |
1212 | * to print as caddr_t. This is not just a | |
1213 | consequence of GDB's type management; PCC and GCC (at | |
1214 | least through version 2.4) both output variables of | |
1215 | either type char * or caddr_t with the type number | |
1216 | defined in the 't' symbol for caddr_t. If a future | |
1217 | compiler cleans this up it GDB is not ready for it | |
1218 | yet, but if it becomes ready we somehow need to | |
1219 | disable this check (without breaking the PCC/GCC2.4 | |
1220 | case). | |
1221 | ||
1222 | Sigh. | |
1223 | ||
1224 | Fortunately, this check seems not to be necessary | |
1225 | for anything except pointers or functions. */ | |
49d97c60 EZ |
1226 | /* ezannoni: 2000-10-26. This seems to apply for |
1227 | versions of gcc older than 2.8. This was the original | |
1228 | problem: with the following code gdb would tell that | |
1229 | the type for name1 is caddr_t, and func is char() | |
1230 | typedef char *caddr_t; | |
1231 | char *name2; | |
1232 | struct x | |
1233 | { | |
1234 | char *name1; | |
1235 | } xx; | |
1236 | char *func() | |
1237 | { | |
1238 | } | |
1239 | main () {} | |
1240 | */ | |
1241 | ||
1242 | /* Pascal accepts names for pointer types. */ | |
1243 | if (current_subfile->language == language_pascal) | |
1244 | { | |
22abf04a | 1245 | TYPE_NAME (SYMBOL_TYPE (sym)) = DEPRECATED_SYMBOL_NAME (sym); |
49d97c60 | 1246 | } |
c906108c SS |
1247 | } |
1248 | else | |
22abf04a | 1249 | TYPE_NAME (SYMBOL_TYPE (sym)) = DEPRECATED_SYMBOL_NAME (sym); |
c906108c SS |
1250 | } |
1251 | ||
1252 | add_symbol_to_list (sym, &file_symbols); | |
1253 | break; | |
1254 | ||
1255 | case 'T': | |
1256 | /* Struct, union, or enum tag. For GNU C++, this can be be followed | |
c5aa993b | 1257 | by 't' which means we are typedef'ing it as well. */ |
c906108c SS |
1258 | synonym = *p == 't'; |
1259 | ||
1260 | if (synonym) | |
1261 | p++; | |
c906108c SS |
1262 | |
1263 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
25caa7a8 | 1264 | |
c906108c | 1265 | /* For a nameless type, we don't want a create a symbol, thus we |
c5aa993b JM |
1266 | did not use `sym'. Return without further processing. */ |
1267 | if (nameless) | |
1268 | return NULL; | |
c906108c SS |
1269 | |
1270 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
1271 | SYMBOL_VALUE (sym) = valu; | |
176620f1 | 1272 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c SS |
1273 | if (TYPE_TAG_NAME (SYMBOL_TYPE (sym)) == 0) |
1274 | TYPE_TAG_NAME (SYMBOL_TYPE (sym)) | |
22abf04a | 1275 | = obconcat (&objfile->type_obstack, "", "", DEPRECATED_SYMBOL_NAME (sym)); |
c906108c SS |
1276 | add_symbol_to_list (sym, &file_symbols); |
1277 | ||
1278 | if (synonym) | |
1279 | { | |
1280 | /* Clone the sym and then modify it. */ | |
aa1ee363 | 1281 | struct symbol *typedef_sym = (struct symbol *) |
c5aa993b | 1282 | obstack_alloc (&objfile->symbol_obstack, sizeof (struct symbol)); |
c906108c SS |
1283 | *typedef_sym = *sym; |
1284 | SYMBOL_CLASS (typedef_sym) = LOC_TYPEDEF; | |
1285 | SYMBOL_VALUE (typedef_sym) = valu; | |
176620f1 | 1286 | SYMBOL_DOMAIN (typedef_sym) = VAR_DOMAIN; |
c906108c SS |
1287 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) |
1288 | TYPE_NAME (SYMBOL_TYPE (sym)) | |
22abf04a | 1289 | = obconcat (&objfile->type_obstack, "", "", DEPRECATED_SYMBOL_NAME (sym)); |
c906108c SS |
1290 | add_symbol_to_list (typedef_sym, &file_symbols); |
1291 | } | |
1292 | break; | |
1293 | ||
1294 | case 'V': | |
1295 | /* Static symbol of local scope */ | |
1296 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
1297 | SYMBOL_CLASS (sym) = LOC_STATIC; | |
1298 | SYMBOL_VALUE_ADDRESS (sym) = valu; | |
1299 | #ifdef STATIC_TRANSFORM_NAME | |
22abf04a | 1300 | if (IS_STATIC_TRANSFORM_NAME (DEPRECATED_SYMBOL_NAME (sym))) |
c5aa993b JM |
1301 | { |
1302 | struct minimal_symbol *msym; | |
22abf04a | 1303 | msym = lookup_minimal_symbol (DEPRECATED_SYMBOL_NAME (sym), NULL, objfile); |
c5aa993b JM |
1304 | if (msym != NULL) |
1305 | { | |
22abf04a | 1306 | DEPRECATED_SYMBOL_NAME (sym) = STATIC_TRANSFORM_NAME (DEPRECATED_SYMBOL_NAME (sym)); |
c5aa993b JM |
1307 | SYMBOL_VALUE_ADDRESS (sym) = SYMBOL_VALUE_ADDRESS (msym); |
1308 | } | |
1309 | } | |
c906108c | 1310 | #endif |
176620f1 | 1311 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1312 | add_symbol_to_list (sym, &local_symbols); |
1313 | break; | |
1314 | ||
1315 | case 'v': | |
1316 | /* Reference parameter */ | |
1317 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
1318 | SYMBOL_CLASS (sym) = LOC_REF_ARG; | |
1319 | SYMBOL_VALUE (sym) = valu; | |
176620f1 | 1320 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1321 | add_symbol_to_list (sym, &local_symbols); |
1322 | break; | |
1323 | ||
1324 | case 'a': | |
1325 | /* Reference parameter which is in a register. */ | |
1326 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
1327 | SYMBOL_CLASS (sym) = LOC_REGPARM_ADDR; | |
1328 | SYMBOL_VALUE (sym) = STAB_REG_TO_REGNUM (valu); | |
64485362 | 1329 | if (SYMBOL_VALUE (sym) >= NUM_REGS + NUM_PSEUDO_REGS) |
c906108c | 1330 | { |
23136709 KB |
1331 | reg_value_complaint (SYMBOL_VALUE (sym), |
1332 | NUM_REGS + NUM_PSEUDO_REGS, | |
de5ad195 | 1333 | SYMBOL_PRINT_NAME (sym)); |
c5aa993b | 1334 | SYMBOL_VALUE (sym) = SP_REGNUM; /* Known safe, though useless */ |
c906108c | 1335 | } |
176620f1 | 1336 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1337 | add_symbol_to_list (sym, &local_symbols); |
1338 | break; | |
1339 | ||
1340 | case 'X': | |
1341 | /* This is used by Sun FORTRAN for "function result value". | |
c5aa993b JM |
1342 | Sun claims ("dbx and dbxtool interfaces", 2nd ed) |
1343 | that Pascal uses it too, but when I tried it Pascal used | |
1344 | "x:3" (local symbol) instead. */ | |
c906108c SS |
1345 | SYMBOL_TYPE (sym) = read_type (&p, objfile); |
1346 | SYMBOL_CLASS (sym) = LOC_LOCAL; | |
1347 | SYMBOL_VALUE (sym) = valu; | |
176620f1 | 1348 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1349 | add_symbol_to_list (sym, &local_symbols); |
1350 | break; | |
c906108c SS |
1351 | |
1352 | default: | |
1353 | SYMBOL_TYPE (sym) = error_type (&p, objfile); | |
1354 | SYMBOL_CLASS (sym) = LOC_CONST; | |
1355 | SYMBOL_VALUE (sym) = 0; | |
176620f1 | 1356 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1357 | add_symbol_to_list (sym, &file_symbols); |
1358 | break; | |
1359 | } | |
1360 | ||
192cb3d4 MK |
1361 | /* Some systems pass variables of certain types by reference instead |
1362 | of by value, i.e. they will pass the address of a structure (in a | |
1363 | register or on the stack) instead of the structure itself. */ | |
c906108c | 1364 | |
192cb3d4 | 1365 | if (gdbarch_stabs_argument_has_addr (current_gdbarch, SYMBOL_TYPE (sym)) |
d03e67c9 | 1366 | && (SYMBOL_CLASS (sym) == LOC_REGPARM || SYMBOL_CLASS (sym) == LOC_ARG)) |
c906108c | 1367 | { |
192cb3d4 MK |
1368 | /* We have to convert LOC_REGPARM to LOC_REGPARM_ADDR (for |
1369 | variables passed in a register). */ | |
1370 | if (SYMBOL_CLASS (sym) == LOC_REGPARM) | |
1371 | SYMBOL_CLASS (sym) = LOC_REGPARM_ADDR; | |
1372 | /* Likewise for converting LOC_ARG to LOC_REF_ARG (for the 7th | |
1373 | and subsequent arguments on SPARC, for example). */ | |
1374 | else if (SYMBOL_CLASS (sym) == LOC_ARG) | |
1375 | SYMBOL_CLASS (sym) = LOC_REF_ARG; | |
c906108c SS |
1376 | } |
1377 | ||
c906108c SS |
1378 | return sym; |
1379 | } | |
1380 | ||
c906108c SS |
1381 | /* Skip rest of this symbol and return an error type. |
1382 | ||
1383 | General notes on error recovery: error_type always skips to the | |
1384 | end of the symbol (modulo cretinous dbx symbol name continuation). | |
1385 | Thus code like this: | |
1386 | ||
1387 | if (*(*pp)++ != ';') | |
c5aa993b | 1388 | return error_type (pp, objfile); |
c906108c SS |
1389 | |
1390 | is wrong because if *pp starts out pointing at '\0' (typically as the | |
1391 | result of an earlier error), it will be incremented to point to the | |
1392 | start of the next symbol, which might produce strange results, at least | |
1393 | if you run off the end of the string table. Instead use | |
1394 | ||
1395 | if (**pp != ';') | |
c5aa993b | 1396 | return error_type (pp, objfile); |
c906108c SS |
1397 | ++*pp; |
1398 | ||
1399 | or | |
1400 | ||
1401 | if (**pp != ';') | |
c5aa993b | 1402 | foo = error_type (pp, objfile); |
c906108c | 1403 | else |
c5aa993b | 1404 | ++*pp; |
c906108c SS |
1405 | |
1406 | And in case it isn't obvious, the point of all this hair is so the compiler | |
1407 | can define new types and new syntaxes, and old versions of the | |
1408 | debugger will be able to read the new symbol tables. */ | |
1409 | ||
1410 | static struct type * | |
fba45db2 | 1411 | error_type (char **pp, struct objfile *objfile) |
c906108c | 1412 | { |
23136709 | 1413 | complaint (&symfile_complaints, "couldn't parse type; debugger out of date?"); |
c906108c SS |
1414 | while (1) |
1415 | { | |
1416 | /* Skip to end of symbol. */ | |
1417 | while (**pp != '\0') | |
1418 | { | |
1419 | (*pp)++; | |
1420 | } | |
1421 | ||
1422 | /* Check for and handle cretinous dbx symbol name continuation! */ | |
1423 | if ((*pp)[-1] == '\\' || (*pp)[-1] == '?') | |
1424 | { | |
1425 | *pp = next_symbol_text (objfile); | |
1426 | } | |
1427 | else | |
1428 | { | |
1429 | break; | |
1430 | } | |
1431 | } | |
1432 | return (builtin_type_error); | |
1433 | } | |
c906108c | 1434 | \f |
c5aa993b | 1435 | |
c906108c SS |
1436 | /* Read type information or a type definition; return the type. Even |
1437 | though this routine accepts either type information or a type | |
1438 | definition, the distinction is relevant--some parts of stabsread.c | |
1439 | assume that type information starts with a digit, '-', or '(' in | |
1440 | deciding whether to call read_type. */ | |
1441 | ||
a7a48797 | 1442 | static struct type * |
aa1ee363 | 1443 | read_type (char **pp, struct objfile *objfile) |
c906108c | 1444 | { |
52f0bd74 | 1445 | struct type *type = 0; |
c906108c SS |
1446 | struct type *type1; |
1447 | int typenums[2]; | |
1448 | char type_descriptor; | |
1449 | ||
1450 | /* Size in bits of type if specified by a type attribute, or -1 if | |
1451 | there is no size attribute. */ | |
1452 | int type_size = -1; | |
1453 | ||
1454 | /* Used to distinguish string and bitstring from char-array and set. */ | |
1455 | int is_string = 0; | |
1456 | ||
e2cd42dd MS |
1457 | /* Used to distinguish vector from array. */ |
1458 | int is_vector = 0; | |
1459 | ||
c906108c SS |
1460 | /* Read type number if present. The type number may be omitted. |
1461 | for instance in a two-dimensional array declared with type | |
1462 | "ar1;1;10;ar1;1;10;4". */ | |
1463 | if ((**pp >= '0' && **pp <= '9') | |
1464 | || **pp == '(' | |
1465 | || **pp == '-') | |
1466 | { | |
1467 | if (read_type_number (pp, typenums) != 0) | |
1468 | return error_type (pp, objfile); | |
c5aa993b | 1469 | |
c906108c | 1470 | /* Type is not being defined here. Either it already exists, |
c5aa993b JM |
1471 | or this is a forward reference to it. dbx_alloc_type handles |
1472 | both cases. */ | |
c906108c SS |
1473 | if (**pp != '=') |
1474 | return dbx_alloc_type (typenums, objfile); | |
1475 | ||
1476 | /* Type is being defined here. */ | |
1477 | /* Skip the '='. | |
c5aa993b JM |
1478 | Also skip the type descriptor - we get it below with (*pp)[-1]. */ |
1479 | (*pp) += 2; | |
c906108c SS |
1480 | } |
1481 | else | |
1482 | { | |
1483 | /* 'typenums=' not present, type is anonymous. Read and return | |
c5aa993b | 1484 | the definition, but don't put it in the type vector. */ |
c906108c SS |
1485 | typenums[0] = typenums[1] = -1; |
1486 | (*pp)++; | |
1487 | } | |
1488 | ||
c5aa993b | 1489 | again: |
c906108c SS |
1490 | type_descriptor = (*pp)[-1]; |
1491 | switch (type_descriptor) | |
1492 | { | |
1493 | case 'x': | |
1494 | { | |
1495 | enum type_code code; | |
1496 | ||
1497 | /* Used to index through file_symbols. */ | |
1498 | struct pending *ppt; | |
1499 | int i; | |
c5aa993b | 1500 | |
c906108c SS |
1501 | /* Name including "struct", etc. */ |
1502 | char *type_name; | |
c5aa993b | 1503 | |
c906108c SS |
1504 | { |
1505 | char *from, *to, *p, *q1, *q2; | |
c5aa993b | 1506 | |
c906108c SS |
1507 | /* Set the type code according to the following letter. */ |
1508 | switch ((*pp)[0]) | |
1509 | { | |
1510 | case 's': | |
1511 | code = TYPE_CODE_STRUCT; | |
1512 | break; | |
1513 | case 'u': | |
1514 | code = TYPE_CODE_UNION; | |
1515 | break; | |
1516 | case 'e': | |
1517 | code = TYPE_CODE_ENUM; | |
1518 | break; | |
1519 | default: | |
1520 | { | |
1521 | /* Complain and keep going, so compilers can invent new | |
1522 | cross-reference types. */ | |
23136709 KB |
1523 | complaint (&symfile_complaints, |
1524 | "Unrecognized cross-reference type `%c'", (*pp)[0]); | |
c906108c SS |
1525 | code = TYPE_CODE_STRUCT; |
1526 | break; | |
1527 | } | |
1528 | } | |
c5aa993b | 1529 | |
c906108c SS |
1530 | q1 = strchr (*pp, '<'); |
1531 | p = strchr (*pp, ':'); | |
1532 | if (p == NULL) | |
1533 | return error_type (pp, objfile); | |
1534 | if (q1 && p > q1 && p[1] == ':') | |
1535 | { | |
1536 | int nesting_level = 0; | |
1537 | for (q2 = q1; *q2; q2++) | |
1538 | { | |
1539 | if (*q2 == '<') | |
1540 | nesting_level++; | |
1541 | else if (*q2 == '>') | |
1542 | nesting_level--; | |
1543 | else if (*q2 == ':' && nesting_level == 0) | |
1544 | break; | |
1545 | } | |
1546 | p = q2; | |
1547 | if (*p != ':') | |
1548 | return error_type (pp, objfile); | |
1549 | } | |
c5aa993b JM |
1550 | to = type_name = |
1551 | (char *) obstack_alloc (&objfile->type_obstack, p - *pp + 1); | |
1552 | ||
c906108c SS |
1553 | /* Copy the name. */ |
1554 | from = *pp + 1; | |
c5aa993b | 1555 | while (from < p) |
c906108c SS |
1556 | *to++ = *from++; |
1557 | *to = '\0'; | |
c5aa993b | 1558 | |
c906108c SS |
1559 | /* Set the pointer ahead of the name which we just read, and |
1560 | the colon. */ | |
1561 | *pp = from + 1; | |
1562 | } | |
1563 | ||
1564 | /* Now check to see whether the type has already been | |
1565 | declared. This was written for arrays of cross-referenced | |
1566 | types before we had TYPE_CODE_TARGET_STUBBED, so I'm pretty | |
1567 | sure it is not necessary anymore. But it might be a good | |
1568 | idea, to save a little memory. */ | |
1569 | ||
1570 | for (ppt = file_symbols; ppt; ppt = ppt->next) | |
1571 | for (i = 0; i < ppt->nsyms; i++) | |
1572 | { | |
1573 | struct symbol *sym = ppt->symbol[i]; | |
1574 | ||
1575 | if (SYMBOL_CLASS (sym) == LOC_TYPEDEF | |
176620f1 | 1576 | && SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN |
c906108c | 1577 | && (TYPE_CODE (SYMBOL_TYPE (sym)) == code) |
22abf04a | 1578 | && STREQ (DEPRECATED_SYMBOL_NAME (sym), type_name)) |
c906108c | 1579 | { |
c5aa993b | 1580 | obstack_free (&objfile->type_obstack, type_name); |
c906108c SS |
1581 | type = SYMBOL_TYPE (sym); |
1582 | return type; | |
1583 | } | |
1584 | } | |
1585 | ||
1586 | /* Didn't find the type to which this refers, so we must | |
1587 | be dealing with a forward reference. Allocate a type | |
1588 | structure for it, and keep track of it so we can | |
1589 | fill in the rest of the fields when we get the full | |
1590 | type. */ | |
1591 | type = dbx_alloc_type (typenums, objfile); | |
1592 | TYPE_CODE (type) = code; | |
1593 | TYPE_TAG_NAME (type) = type_name; | |
c5aa993b | 1594 | INIT_CPLUS_SPECIFIC (type); |
c906108c SS |
1595 | TYPE_FLAGS (type) |= TYPE_FLAG_STUB; |
1596 | ||
1597 | add_undefined_type (type); | |
1598 | return type; | |
1599 | } | |
1600 | ||
c5aa993b | 1601 | case '-': /* RS/6000 built-in type */ |
c906108c SS |
1602 | case '0': |
1603 | case '1': | |
1604 | case '2': | |
1605 | case '3': | |
1606 | case '4': | |
1607 | case '5': | |
1608 | case '6': | |
1609 | case '7': | |
1610 | case '8': | |
1611 | case '9': | |
1612 | case '(': | |
1613 | (*pp)--; | |
1614 | ||
1615 | /* We deal with something like t(1,2)=(3,4)=... which | |
c5aa993b | 1616 | the Lucid compiler and recent gcc versions (post 2.7.3) use. */ |
c906108c SS |
1617 | |
1618 | /* Allocate and enter the typedef type first. | |
c5aa993b | 1619 | This handles recursive types. */ |
c906108c SS |
1620 | type = dbx_alloc_type (typenums, objfile); |
1621 | TYPE_CODE (type) = TYPE_CODE_TYPEDEF; | |
c5aa993b JM |
1622 | { |
1623 | struct type *xtype = read_type (pp, objfile); | |
c906108c SS |
1624 | if (type == xtype) |
1625 | { | |
1626 | /* It's being defined as itself. That means it is "void". */ | |
1627 | TYPE_CODE (type) = TYPE_CODE_VOID; | |
1628 | TYPE_LENGTH (type) = 1; | |
1629 | } | |
1630 | else if (type_size >= 0 || is_string) | |
1631 | { | |
dd6bda65 DJ |
1632 | /* This is the absolute wrong way to construct types. Every |
1633 | other debug format has found a way around this problem and | |
1634 | the related problems with unnecessarily stubbed types; | |
1635 | someone motivated should attempt to clean up the issue | |
1636 | here as well. Once a type pointed to has been created it | |
13a393b0 JB |
1637 | should not be modified. |
1638 | ||
1639 | Well, it's not *absolutely* wrong. Constructing recursive | |
1640 | types (trees, linked lists) necessarily entails modifying | |
1641 | types after creating them. Constructing any loop structure | |
1642 | entails side effects. The Dwarf 2 reader does handle this | |
1643 | more gracefully (it never constructs more than once | |
1644 | instance of a type object, so it doesn't have to copy type | |
1645 | objects wholesale), but it still mutates type objects after | |
1646 | other folks have references to them. | |
1647 | ||
1648 | Keep in mind that this circularity/mutation issue shows up | |
1649 | at the source language level, too: C's "incomplete types", | |
1650 | for example. So the proper cleanup, I think, would be to | |
1651 | limit GDB's type smashing to match exactly those required | |
1652 | by the source language. So GDB could have a | |
1653 | "complete_this_type" function, but never create unnecessary | |
1654 | copies of a type otherwise. */ | |
dd6bda65 | 1655 | replace_type (type, xtype); |
c906108c SS |
1656 | TYPE_NAME (type) = NULL; |
1657 | TYPE_TAG_NAME (type) = NULL; | |
1658 | } | |
1659 | else | |
1660 | { | |
1661 | TYPE_FLAGS (type) |= TYPE_FLAG_TARGET_STUB; | |
1662 | TYPE_TARGET_TYPE (type) = xtype; | |
1663 | } | |
1664 | } | |
1665 | break; | |
1666 | ||
c5aa993b JM |
1667 | /* In the following types, we must be sure to overwrite any existing |
1668 | type that the typenums refer to, rather than allocating a new one | |
1669 | and making the typenums point to the new one. This is because there | |
1670 | may already be pointers to the existing type (if it had been | |
1671 | forward-referenced), and we must change it to a pointer, function, | |
1672 | reference, or whatever, *in-place*. */ | |
c906108c | 1673 | |
e2cd42dd | 1674 | case '*': /* Pointer to another type */ |
c906108c SS |
1675 | type1 = read_type (pp, objfile); |
1676 | type = make_pointer_type (type1, dbx_lookup_type (typenums)); | |
1677 | break; | |
1678 | ||
c5aa993b | 1679 | case '&': /* Reference to another type */ |
c906108c SS |
1680 | type1 = read_type (pp, objfile); |
1681 | type = make_reference_type (type1, dbx_lookup_type (typenums)); | |
1682 | break; | |
1683 | ||
c5aa993b | 1684 | case 'f': /* Function returning another type */ |
c906108c SS |
1685 | type1 = read_type (pp, objfile); |
1686 | type = make_function_type (type1, dbx_lookup_type (typenums)); | |
1687 | break; | |
1688 | ||
da966255 JB |
1689 | case 'g': /* Prototyped function. (Sun) */ |
1690 | { | |
1691 | /* Unresolved questions: | |
1692 | ||
1693 | - According to Sun's ``STABS Interface Manual'', for 'f' | |
1694 | and 'F' symbol descriptors, a `0' in the argument type list | |
1695 | indicates a varargs function. But it doesn't say how 'g' | |
1696 | type descriptors represent that info. Someone with access | |
1697 | to Sun's toolchain should try it out. | |
1698 | ||
1699 | - According to the comment in define_symbol (search for | |
1700 | `process_prototype_types:'), Sun emits integer arguments as | |
1701 | types which ref themselves --- like `void' types. Do we | |
1702 | have to deal with that here, too? Again, someone with | |
1703 | access to Sun's toolchain should try it out and let us | |
1704 | know. */ | |
1705 | ||
1706 | const char *type_start = (*pp) - 1; | |
1707 | struct type *return_type = read_type (pp, objfile); | |
1708 | struct type *func_type | |
1709 | = make_function_type (return_type, dbx_lookup_type (typenums)); | |
1710 | struct type_list { | |
1711 | struct type *type; | |
1712 | struct type_list *next; | |
1713 | } *arg_types = 0; | |
1714 | int num_args = 0; | |
1715 | ||
1716 | while (**pp && **pp != '#') | |
1717 | { | |
1718 | struct type *arg_type = read_type (pp, objfile); | |
1719 | struct type_list *new = alloca (sizeof (*new)); | |
1720 | new->type = arg_type; | |
1721 | new->next = arg_types; | |
1722 | arg_types = new; | |
1723 | num_args++; | |
1724 | } | |
1725 | if (**pp == '#') | |
1726 | ++*pp; | |
1727 | else | |
1728 | { | |
23136709 KB |
1729 | complaint (&symfile_complaints, |
1730 | "Prototyped function type didn't end arguments with `#':\n%s", | |
1731 | type_start); | |
da966255 JB |
1732 | } |
1733 | ||
1734 | /* If there is just one argument whose type is `void', then | |
1735 | that's just an empty argument list. */ | |
1736 | if (arg_types | |
1737 | && ! arg_types->next | |
1738 | && TYPE_CODE (arg_types->type) == TYPE_CODE_VOID) | |
1739 | num_args = 0; | |
1740 | ||
1741 | TYPE_FIELDS (func_type) | |
1742 | = (struct field *) TYPE_ALLOC (func_type, | |
1743 | num_args * sizeof (struct field)); | |
1744 | memset (TYPE_FIELDS (func_type), 0, num_args * sizeof (struct field)); | |
1745 | { | |
1746 | int i; | |
1747 | struct type_list *t; | |
1748 | ||
1749 | /* We stuck each argument type onto the front of the list | |
1750 | when we read it, so the list is reversed. Build the | |
1751 | fields array right-to-left. */ | |
1752 | for (t = arg_types, i = num_args - 1; t; t = t->next, i--) | |
1753 | TYPE_FIELD_TYPE (func_type, i) = t->type; | |
1754 | } | |
1755 | TYPE_NFIELDS (func_type) = num_args; | |
1756 | TYPE_FLAGS (func_type) |= TYPE_FLAG_PROTOTYPED; | |
1757 | ||
1758 | type = func_type; | |
1759 | break; | |
1760 | } | |
1761 | ||
c5aa993b | 1762 | case 'k': /* Const qualifier on some type (Sun) */ |
c906108c | 1763 | type = read_type (pp, objfile); |
d7242108 DJ |
1764 | type = make_cv_type (1, TYPE_VOLATILE (type), type, |
1765 | dbx_lookup_type (typenums)); | |
c906108c SS |
1766 | break; |
1767 | ||
c5aa993b | 1768 | case 'B': /* Volatile qual on some type (Sun) */ |
c906108c | 1769 | type = read_type (pp, objfile); |
d7242108 DJ |
1770 | type = make_cv_type (TYPE_CONST (type), 1, type, |
1771 | dbx_lookup_type (typenums)); | |
c906108c SS |
1772 | break; |
1773 | ||
1774 | case '@': | |
c5aa993b JM |
1775 | if (isdigit (**pp) || **pp == '(' || **pp == '-') |
1776 | { /* Member (class & variable) type */ | |
c906108c SS |
1777 | /* FIXME -- we should be doing smash_to_XXX types here. */ |
1778 | ||
1779 | struct type *domain = read_type (pp, objfile); | |
1780 | struct type *memtype; | |
1781 | ||
1782 | if (**pp != ',') | |
1783 | /* Invalid member type data format. */ | |
1784 | return error_type (pp, objfile); | |
1785 | ++*pp; | |
1786 | ||
1787 | memtype = read_type (pp, objfile); | |
1788 | type = dbx_alloc_type (typenums, objfile); | |
1789 | smash_to_member_type (type, domain, memtype); | |
1790 | } | |
c5aa993b JM |
1791 | else |
1792 | /* type attribute */ | |
c906108c SS |
1793 | { |
1794 | char *attr = *pp; | |
1795 | /* Skip to the semicolon. */ | |
1796 | while (**pp != ';' && **pp != '\0') | |
1797 | ++(*pp); | |
1798 | if (**pp == '\0') | |
1799 | return error_type (pp, objfile); | |
1800 | else | |
c5aa993b | 1801 | ++ * pp; /* Skip the semicolon. */ |
c906108c SS |
1802 | |
1803 | switch (*attr) | |
1804 | { | |
e2cd42dd | 1805 | case 's': /* Size attribute */ |
c906108c SS |
1806 | type_size = atoi (attr + 1); |
1807 | if (type_size <= 0) | |
1808 | type_size = -1; | |
1809 | break; | |
1810 | ||
e2cd42dd MS |
1811 | case 'S': /* String attribute */ |
1812 | /* FIXME: check to see if following type is array? */ | |
c906108c SS |
1813 | is_string = 1; |
1814 | break; | |
1815 | ||
e2cd42dd MS |
1816 | case 'V': /* Vector attribute */ |
1817 | /* FIXME: check to see if following type is array? */ | |
1818 | is_vector = 1; | |
1819 | break; | |
1820 | ||
c906108c SS |
1821 | default: |
1822 | /* Ignore unrecognized type attributes, so future compilers | |
c5aa993b | 1823 | can invent new ones. */ |
c906108c SS |
1824 | break; |
1825 | } | |
1826 | ++*pp; | |
1827 | goto again; | |
1828 | } | |
1829 | break; | |
1830 | ||
c5aa993b | 1831 | case '#': /* Method (class & fn) type */ |
c906108c SS |
1832 | if ((*pp)[0] == '#') |
1833 | { | |
1834 | /* We'll get the parameter types from the name. */ | |
1835 | struct type *return_type; | |
1836 | ||
1837 | (*pp)++; | |
1838 | return_type = read_type (pp, objfile); | |
1839 | if (*(*pp)++ != ';') | |
23136709 KB |
1840 | complaint (&symfile_complaints, |
1841 | "invalid (minimal) member type data format at symtab pos %d.", | |
1842 | symnum); | |
c906108c SS |
1843 | type = allocate_stub_method (return_type); |
1844 | if (typenums[0] != -1) | |
1845 | *dbx_lookup_type (typenums) = type; | |
1846 | } | |
1847 | else | |
1848 | { | |
1849 | struct type *domain = read_type (pp, objfile); | |
1850 | struct type *return_type; | |
ad2f7632 DJ |
1851 | struct field *args; |
1852 | int nargs, varargs; | |
c906108c SS |
1853 | |
1854 | if (**pp != ',') | |
1855 | /* Invalid member type data format. */ | |
1856 | return error_type (pp, objfile); | |
1857 | else | |
1858 | ++(*pp); | |
1859 | ||
1860 | return_type = read_type (pp, objfile); | |
ad2f7632 | 1861 | args = read_args (pp, ';', objfile, &nargs, &varargs); |
c906108c | 1862 | type = dbx_alloc_type (typenums, objfile); |
ad2f7632 DJ |
1863 | smash_to_method_type (type, domain, return_type, args, |
1864 | nargs, varargs); | |
c906108c SS |
1865 | } |
1866 | break; | |
1867 | ||
c5aa993b | 1868 | case 'r': /* Range type */ |
c906108c SS |
1869 | type = read_range_type (pp, typenums, objfile); |
1870 | if (typenums[0] != -1) | |
1871 | *dbx_lookup_type (typenums) = type; | |
1872 | break; | |
1873 | ||
1874 | case 'b': | |
c906108c SS |
1875 | { |
1876 | /* Sun ACC builtin int type */ | |
1877 | type = read_sun_builtin_type (pp, typenums, objfile); | |
1878 | if (typenums[0] != -1) | |
1879 | *dbx_lookup_type (typenums) = type; | |
1880 | } | |
1881 | break; | |
1882 | ||
c5aa993b | 1883 | case 'R': /* Sun ACC builtin float type */ |
c906108c SS |
1884 | type = read_sun_floating_type (pp, typenums, objfile); |
1885 | if (typenums[0] != -1) | |
1886 | *dbx_lookup_type (typenums) = type; | |
1887 | break; | |
c5aa993b JM |
1888 | |
1889 | case 'e': /* Enumeration type */ | |
c906108c SS |
1890 | type = dbx_alloc_type (typenums, objfile); |
1891 | type = read_enum_type (pp, type, objfile); | |
1892 | if (typenums[0] != -1) | |
1893 | *dbx_lookup_type (typenums) = type; | |
1894 | break; | |
1895 | ||
c5aa993b JM |
1896 | case 's': /* Struct type */ |
1897 | case 'u': /* Union type */ | |
2ae1c2d2 JB |
1898 | { |
1899 | enum type_code type_code = TYPE_CODE_UNDEF; | |
1900 | type = dbx_alloc_type (typenums, objfile); | |
1901 | switch (type_descriptor) | |
1902 | { | |
1903 | case 's': | |
1904 | type_code = TYPE_CODE_STRUCT; | |
1905 | break; | |
1906 | case 'u': | |
1907 | type_code = TYPE_CODE_UNION; | |
1908 | break; | |
1909 | } | |
1910 | type = read_struct_type (pp, type, type_code, objfile); | |
1911 | break; | |
1912 | } | |
c906108c | 1913 | |
c5aa993b | 1914 | case 'a': /* Array type */ |
c906108c SS |
1915 | if (**pp != 'r') |
1916 | return error_type (pp, objfile); | |
1917 | ++*pp; | |
c5aa993b | 1918 | |
c906108c SS |
1919 | type = dbx_alloc_type (typenums, objfile); |
1920 | type = read_array_type (pp, type, objfile); | |
1921 | if (is_string) | |
1922 | TYPE_CODE (type) = TYPE_CODE_STRING; | |
e2cd42dd MS |
1923 | if (is_vector) |
1924 | TYPE_FLAGS (type) |= TYPE_FLAG_VECTOR; | |
c906108c SS |
1925 | break; |
1926 | ||
e2cd42dd | 1927 | case 'S': /* Set or bitstring type */ |
c906108c | 1928 | type1 = read_type (pp, objfile); |
c5aa993b | 1929 | type = create_set_type ((struct type *) NULL, type1); |
c906108c SS |
1930 | if (is_string) |
1931 | TYPE_CODE (type) = TYPE_CODE_BITSTRING; | |
1932 | if (typenums[0] != -1) | |
1933 | *dbx_lookup_type (typenums) = type; | |
1934 | break; | |
1935 | ||
1936 | default: | |
1937 | --*pp; /* Go back to the symbol in error */ | |
c5aa993b | 1938 | /* Particularly important if it was \0! */ |
c906108c SS |
1939 | return error_type (pp, objfile); |
1940 | } | |
1941 | ||
1942 | if (type == 0) | |
1943 | { | |
1944 | warning ("GDB internal error, type is NULL in stabsread.c\n"); | |
1945 | return error_type (pp, objfile); | |
1946 | } | |
1947 | ||
1948 | /* Size specified in a type attribute overrides any other size. */ | |
1949 | if (type_size != -1) | |
1950 | TYPE_LENGTH (type) = (type_size + TARGET_CHAR_BIT - 1) / TARGET_CHAR_BIT; | |
1951 | ||
1952 | return type; | |
1953 | } | |
1954 | \f | |
1955 | /* RS/6000 xlc/dbx combination uses a set of builtin types, starting from -1. | |
1956 | Return the proper type node for a given builtin type number. */ | |
1957 | ||
1958 | static struct type * | |
fba45db2 | 1959 | rs6000_builtin_type (int typenum) |
c906108c SS |
1960 | { |
1961 | /* We recognize types numbered from -NUMBER_RECOGNIZED to -1. */ | |
1962 | #define NUMBER_RECOGNIZED 34 | |
1963 | /* This includes an empty slot for type number -0. */ | |
1964 | static struct type *negative_types[NUMBER_RECOGNIZED + 1]; | |
1965 | struct type *rettype = NULL; | |
1966 | ||
1967 | if (typenum >= 0 || typenum < -NUMBER_RECOGNIZED) | |
1968 | { | |
23136709 | 1969 | complaint (&symfile_complaints, "Unknown builtin type %d", typenum); |
c906108c SS |
1970 | return builtin_type_error; |
1971 | } | |
1972 | if (negative_types[-typenum] != NULL) | |
1973 | return negative_types[-typenum]; | |
1974 | ||
1975 | #if TARGET_CHAR_BIT != 8 | |
c5aa993b | 1976 | #error This code wrong for TARGET_CHAR_BIT not 8 |
c906108c SS |
1977 | /* These definitions all assume that TARGET_CHAR_BIT is 8. I think |
1978 | that if that ever becomes not true, the correct fix will be to | |
1979 | make the size in the struct type to be in bits, not in units of | |
1980 | TARGET_CHAR_BIT. */ | |
1981 | #endif | |
1982 | ||
1983 | switch (-typenum) | |
1984 | { | |
1985 | case 1: | |
1986 | /* The size of this and all the other types are fixed, defined | |
c5aa993b JM |
1987 | by the debugging format. If there is a type called "int" which |
1988 | is other than 32 bits, then it should use a new negative type | |
1989 | number (or avoid negative type numbers for that case). | |
1990 | See stabs.texinfo. */ | |
c906108c SS |
1991 | rettype = init_type (TYPE_CODE_INT, 4, 0, "int", NULL); |
1992 | break; | |
1993 | case 2: | |
1994 | rettype = init_type (TYPE_CODE_INT, 1, 0, "char", NULL); | |
1995 | break; | |
1996 | case 3: | |
1997 | rettype = init_type (TYPE_CODE_INT, 2, 0, "short", NULL); | |
1998 | break; | |
1999 | case 4: | |
2000 | rettype = init_type (TYPE_CODE_INT, 4, 0, "long", NULL); | |
2001 | break; | |
2002 | case 5: | |
2003 | rettype = init_type (TYPE_CODE_INT, 1, TYPE_FLAG_UNSIGNED, | |
2004 | "unsigned char", NULL); | |
2005 | break; | |
2006 | case 6: | |
2007 | rettype = init_type (TYPE_CODE_INT, 1, 0, "signed char", NULL); | |
2008 | break; | |
2009 | case 7: | |
2010 | rettype = init_type (TYPE_CODE_INT, 2, TYPE_FLAG_UNSIGNED, | |
2011 | "unsigned short", NULL); | |
2012 | break; | |
2013 | case 8: | |
2014 | rettype = init_type (TYPE_CODE_INT, 4, TYPE_FLAG_UNSIGNED, | |
2015 | "unsigned int", NULL); | |
2016 | break; | |
2017 | case 9: | |
2018 | rettype = init_type (TYPE_CODE_INT, 4, TYPE_FLAG_UNSIGNED, | |
2019 | "unsigned", NULL); | |
2020 | case 10: | |
2021 | rettype = init_type (TYPE_CODE_INT, 4, TYPE_FLAG_UNSIGNED, | |
2022 | "unsigned long", NULL); | |
2023 | break; | |
2024 | case 11: | |
2025 | rettype = init_type (TYPE_CODE_VOID, 1, 0, "void", NULL); | |
2026 | break; | |
2027 | case 12: | |
2028 | /* IEEE single precision (32 bit). */ | |
2029 | rettype = init_type (TYPE_CODE_FLT, 4, 0, "float", NULL); | |
2030 | break; | |
2031 | case 13: | |
2032 | /* IEEE double precision (64 bit). */ | |
2033 | rettype = init_type (TYPE_CODE_FLT, 8, 0, "double", NULL); | |
2034 | break; | |
2035 | case 14: | |
2036 | /* This is an IEEE double on the RS/6000, and different machines with | |
c5aa993b JM |
2037 | different sizes for "long double" should use different negative |
2038 | type numbers. See stabs.texinfo. */ | |
c906108c SS |
2039 | rettype = init_type (TYPE_CODE_FLT, 8, 0, "long double", NULL); |
2040 | break; | |
2041 | case 15: | |
2042 | rettype = init_type (TYPE_CODE_INT, 4, 0, "integer", NULL); | |
2043 | break; | |
2044 | case 16: | |
2045 | rettype = init_type (TYPE_CODE_BOOL, 4, TYPE_FLAG_UNSIGNED, | |
2046 | "boolean", NULL); | |
2047 | break; | |
2048 | case 17: | |
2049 | rettype = init_type (TYPE_CODE_FLT, 4, 0, "short real", NULL); | |
2050 | break; | |
2051 | case 18: | |
2052 | rettype = init_type (TYPE_CODE_FLT, 8, 0, "real", NULL); | |
2053 | break; | |
2054 | case 19: | |
2055 | rettype = init_type (TYPE_CODE_ERROR, 0, 0, "stringptr", NULL); | |
2056 | break; | |
2057 | case 20: | |
2058 | rettype = init_type (TYPE_CODE_CHAR, 1, TYPE_FLAG_UNSIGNED, | |
2059 | "character", NULL); | |
2060 | break; | |
2061 | case 21: | |
2062 | rettype = init_type (TYPE_CODE_BOOL, 1, TYPE_FLAG_UNSIGNED, | |
2063 | "logical*1", NULL); | |
2064 | break; | |
2065 | case 22: | |
2066 | rettype = init_type (TYPE_CODE_BOOL, 2, TYPE_FLAG_UNSIGNED, | |
2067 | "logical*2", NULL); | |
2068 | break; | |
2069 | case 23: | |
2070 | rettype = init_type (TYPE_CODE_BOOL, 4, TYPE_FLAG_UNSIGNED, | |
2071 | "logical*4", NULL); | |
2072 | break; | |
2073 | case 24: | |
2074 | rettype = init_type (TYPE_CODE_BOOL, 4, TYPE_FLAG_UNSIGNED, | |
2075 | "logical", NULL); | |
2076 | break; | |
2077 | case 25: | |
2078 | /* Complex type consisting of two IEEE single precision values. */ | |
2079 | rettype = init_type (TYPE_CODE_COMPLEX, 8, 0, "complex", NULL); | |
f65ca430 DJ |
2080 | TYPE_TARGET_TYPE (rettype) = init_type (TYPE_CODE_FLT, 4, 0, "float", |
2081 | NULL); | |
c906108c SS |
2082 | break; |
2083 | case 26: | |
2084 | /* Complex type consisting of two IEEE double precision values. */ | |
2085 | rettype = init_type (TYPE_CODE_COMPLEX, 16, 0, "double complex", NULL); | |
f65ca430 DJ |
2086 | TYPE_TARGET_TYPE (rettype) = init_type (TYPE_CODE_FLT, 8, 0, "double", |
2087 | NULL); | |
c906108c SS |
2088 | break; |
2089 | case 27: | |
2090 | rettype = init_type (TYPE_CODE_INT, 1, 0, "integer*1", NULL); | |
2091 | break; | |
2092 | case 28: | |
2093 | rettype = init_type (TYPE_CODE_INT, 2, 0, "integer*2", NULL); | |
2094 | break; | |
2095 | case 29: | |
2096 | rettype = init_type (TYPE_CODE_INT, 4, 0, "integer*4", NULL); | |
2097 | break; | |
2098 | case 30: | |
2099 | rettype = init_type (TYPE_CODE_CHAR, 2, 0, "wchar", NULL); | |
2100 | break; | |
2101 | case 31: | |
2102 | rettype = init_type (TYPE_CODE_INT, 8, 0, "long long", NULL); | |
2103 | break; | |
2104 | case 32: | |
2105 | rettype = init_type (TYPE_CODE_INT, 8, TYPE_FLAG_UNSIGNED, | |
2106 | "unsigned long long", NULL); | |
2107 | break; | |
2108 | case 33: | |
2109 | rettype = init_type (TYPE_CODE_INT, 8, TYPE_FLAG_UNSIGNED, | |
2110 | "logical*8", NULL); | |
2111 | break; | |
2112 | case 34: | |
2113 | rettype = init_type (TYPE_CODE_INT, 8, 0, "integer*8", NULL); | |
2114 | break; | |
2115 | } | |
2116 | negative_types[-typenum] = rettype; | |
2117 | return rettype; | |
2118 | } | |
2119 | \f | |
2120 | /* This page contains subroutines of read_type. */ | |
2121 | ||
de17c821 DJ |
2122 | /* Replace *OLD_NAME with the method name portion of PHYSNAME. */ |
2123 | ||
2124 | static void | |
2125 | update_method_name_from_physname (char **old_name, char *physname) | |
2126 | { | |
2127 | char *method_name; | |
2128 | ||
2129 | method_name = method_name_from_physname (physname); | |
2130 | ||
2131 | if (method_name == NULL) | |
c263362b DJ |
2132 | { |
2133 | complaint (&symfile_complaints, | |
2134 | "Method has bad physname %s\n", physname); | |
2135 | return; | |
2136 | } | |
de17c821 DJ |
2137 | |
2138 | if (strcmp (*old_name, method_name) != 0) | |
2139 | { | |
2140 | xfree (*old_name); | |
2141 | *old_name = method_name; | |
2142 | } | |
2143 | else | |
2144 | xfree (method_name); | |
2145 | } | |
2146 | ||
c906108c SS |
2147 | /* Read member function stabs info for C++ classes. The form of each member |
2148 | function data is: | |
2149 | ||
c5aa993b | 2150 | NAME :: TYPENUM[=type definition] ARGS : PHYSNAME ; |
c906108c SS |
2151 | |
2152 | An example with two member functions is: | |
2153 | ||
c5aa993b | 2154 | afunc1::20=##15;:i;2A.;afunc2::20:i;2A.; |
c906108c SS |
2155 | |
2156 | For the case of overloaded operators, the format is op$::*.funcs, where | |
2157 | $ is the CPLUS_MARKER (usually '$'), `*' holds the place for an operator | |
2158 | name (such as `+=') and `.' marks the end of the operator name. | |
2159 | ||
2160 | Returns 1 for success, 0 for failure. */ | |
2161 | ||
2162 | static int | |
fba45db2 KB |
2163 | read_member_functions (struct field_info *fip, char **pp, struct type *type, |
2164 | struct objfile *objfile) | |
c906108c SS |
2165 | { |
2166 | int nfn_fields = 0; | |
2167 | int length = 0; | |
2168 | /* Total number of member functions defined in this class. If the class | |
2169 | defines two `f' functions, and one `g' function, then this will have | |
2170 | the value 3. */ | |
2171 | int total_length = 0; | |
2172 | int i; | |
2173 | struct next_fnfield | |
2174 | { | |
2175 | struct next_fnfield *next; | |
2176 | struct fn_field fn_field; | |
c5aa993b JM |
2177 | } |
2178 | *sublist; | |
c906108c SS |
2179 | struct type *look_ahead_type; |
2180 | struct next_fnfieldlist *new_fnlist; | |
2181 | struct next_fnfield *new_sublist; | |
2182 | char *main_fn_name; | |
52f0bd74 | 2183 | char *p; |
c5aa993b | 2184 | |
c906108c SS |
2185 | /* Process each list until we find something that is not a member function |
2186 | or find the end of the functions. */ | |
2187 | ||
2188 | while (**pp != ';') | |
2189 | { | |
2190 | /* We should be positioned at the start of the function name. | |
c5aa993b JM |
2191 | Scan forward to find the first ':' and if it is not the |
2192 | first of a "::" delimiter, then this is not a member function. */ | |
c906108c SS |
2193 | p = *pp; |
2194 | while (*p != ':') | |
2195 | { | |
2196 | p++; | |
2197 | } | |
2198 | if (p[1] != ':') | |
2199 | { | |
2200 | break; | |
2201 | } | |
2202 | ||
2203 | sublist = NULL; | |
2204 | look_ahead_type = NULL; | |
2205 | length = 0; | |
c5aa993b | 2206 | |
c906108c SS |
2207 | new_fnlist = (struct next_fnfieldlist *) |
2208 | xmalloc (sizeof (struct next_fnfieldlist)); | |
b8c9b27d | 2209 | make_cleanup (xfree, new_fnlist); |
c906108c | 2210 | memset (new_fnlist, 0, sizeof (struct next_fnfieldlist)); |
c5aa993b | 2211 | |
c906108c SS |
2212 | if ((*pp)[0] == 'o' && (*pp)[1] == 'p' && is_cplus_marker ((*pp)[2])) |
2213 | { | |
2214 | /* This is a completely wierd case. In order to stuff in the | |
2215 | names that might contain colons (the usual name delimiter), | |
2216 | Mike Tiemann defined a different name format which is | |
2217 | signalled if the identifier is "op$". In that case, the | |
2218 | format is "op$::XXXX." where XXXX is the name. This is | |
2219 | used for names like "+" or "=". YUUUUUUUK! FIXME! */ | |
2220 | /* This lets the user type "break operator+". | |
2221 | We could just put in "+" as the name, but that wouldn't | |
2222 | work for "*". */ | |
8343f86c | 2223 | static char opname[32] = "op$"; |
c906108c | 2224 | char *o = opname + 3; |
c5aa993b | 2225 | |
c906108c SS |
2226 | /* Skip past '::'. */ |
2227 | *pp = p + 2; | |
2228 | ||
2229 | STABS_CONTINUE (pp, objfile); | |
2230 | p = *pp; | |
2231 | while (*p != '.') | |
2232 | { | |
2233 | *o++ = *p++; | |
2234 | } | |
2235 | main_fn_name = savestring (opname, o - opname); | |
2236 | /* Skip past '.' */ | |
2237 | *pp = p + 1; | |
2238 | } | |
2239 | else | |
2240 | { | |
2241 | main_fn_name = savestring (*pp, p - *pp); | |
2242 | /* Skip past '::'. */ | |
2243 | *pp = p + 2; | |
2244 | } | |
c5aa993b JM |
2245 | new_fnlist->fn_fieldlist.name = main_fn_name; |
2246 | ||
c906108c SS |
2247 | do |
2248 | { | |
2249 | new_sublist = | |
2250 | (struct next_fnfield *) xmalloc (sizeof (struct next_fnfield)); | |
b8c9b27d | 2251 | make_cleanup (xfree, new_sublist); |
c906108c | 2252 | memset (new_sublist, 0, sizeof (struct next_fnfield)); |
c5aa993b | 2253 | |
c906108c SS |
2254 | /* Check for and handle cretinous dbx symbol name continuation! */ |
2255 | if (look_ahead_type == NULL) | |
2256 | { | |
2257 | /* Normal case. */ | |
2258 | STABS_CONTINUE (pp, objfile); | |
c5aa993b JM |
2259 | |
2260 | new_sublist->fn_field.type = read_type (pp, objfile); | |
c906108c SS |
2261 | if (**pp != ':') |
2262 | { | |
2263 | /* Invalid symtab info for member function. */ | |
2264 | return 0; | |
2265 | } | |
2266 | } | |
2267 | else | |
2268 | { | |
2269 | /* g++ version 1 kludge */ | |
c5aa993b | 2270 | new_sublist->fn_field.type = look_ahead_type; |
c906108c SS |
2271 | look_ahead_type = NULL; |
2272 | } | |
c5aa993b | 2273 | |
c906108c SS |
2274 | (*pp)++; |
2275 | p = *pp; | |
2276 | while (*p != ';') | |
2277 | { | |
2278 | p++; | |
2279 | } | |
c5aa993b | 2280 | |
c906108c SS |
2281 | /* If this is just a stub, then we don't have the real name here. */ |
2282 | ||
74a9bb82 | 2283 | if (TYPE_STUB (new_sublist->fn_field.type)) |
c906108c | 2284 | { |
c5aa993b JM |
2285 | if (!TYPE_DOMAIN_TYPE (new_sublist->fn_field.type)) |
2286 | TYPE_DOMAIN_TYPE (new_sublist->fn_field.type) = type; | |
2287 | new_sublist->fn_field.is_stub = 1; | |
c906108c | 2288 | } |
c5aa993b | 2289 | new_sublist->fn_field.physname = savestring (*pp, p - *pp); |
c906108c | 2290 | *pp = p + 1; |
c5aa993b | 2291 | |
c906108c SS |
2292 | /* Set this member function's visibility fields. */ |
2293 | switch (*(*pp)++) | |
2294 | { | |
c5aa993b JM |
2295 | case VISIBILITY_PRIVATE: |
2296 | new_sublist->fn_field.is_private = 1; | |
2297 | break; | |
2298 | case VISIBILITY_PROTECTED: | |
2299 | new_sublist->fn_field.is_protected = 1; | |
2300 | break; | |
c906108c | 2301 | } |
c5aa993b | 2302 | |
c906108c SS |
2303 | STABS_CONTINUE (pp, objfile); |
2304 | switch (**pp) | |
2305 | { | |
c5aa993b JM |
2306 | case 'A': /* Normal functions. */ |
2307 | new_sublist->fn_field.is_const = 0; | |
2308 | new_sublist->fn_field.is_volatile = 0; | |
2309 | (*pp)++; | |
2310 | break; | |
2311 | case 'B': /* `const' member functions. */ | |
2312 | new_sublist->fn_field.is_const = 1; | |
2313 | new_sublist->fn_field.is_volatile = 0; | |
2314 | (*pp)++; | |
2315 | break; | |
2316 | case 'C': /* `volatile' member function. */ | |
2317 | new_sublist->fn_field.is_const = 0; | |
2318 | new_sublist->fn_field.is_volatile = 1; | |
2319 | (*pp)++; | |
2320 | break; | |
2321 | case 'D': /* `const volatile' member function. */ | |
2322 | new_sublist->fn_field.is_const = 1; | |
2323 | new_sublist->fn_field.is_volatile = 1; | |
2324 | (*pp)++; | |
2325 | break; | |
2326 | case '*': /* File compiled with g++ version 1 -- no info */ | |
2327 | case '?': | |
2328 | case '.': | |
2329 | break; | |
2330 | default: | |
23136709 KB |
2331 | complaint (&symfile_complaints, |
2332 | "const/volatile indicator missing, got '%c'", **pp); | |
c5aa993b | 2333 | break; |
c906108c | 2334 | } |
c5aa993b | 2335 | |
c906108c SS |
2336 | switch (*(*pp)++) |
2337 | { | |
c5aa993b | 2338 | case '*': |
c906108c SS |
2339 | { |
2340 | int nbits; | |
c5aa993b | 2341 | /* virtual member function, followed by index. |
c906108c SS |
2342 | The sign bit is set to distinguish pointers-to-methods |
2343 | from virtual function indicies. Since the array is | |
2344 | in words, the quantity must be shifted left by 1 | |
2345 | on 16 bit machine, and by 2 on 32 bit machine, forcing | |
2346 | the sign bit out, and usable as a valid index into | |
2347 | the array. Remove the sign bit here. */ | |
c5aa993b | 2348 | new_sublist->fn_field.voffset = |
c906108c SS |
2349 | (0x7fffffff & read_huge_number (pp, ';', &nbits)) + 2; |
2350 | if (nbits != 0) | |
2351 | return 0; | |
c5aa993b | 2352 | |
c906108c SS |
2353 | STABS_CONTINUE (pp, objfile); |
2354 | if (**pp == ';' || **pp == '\0') | |
2355 | { | |
2356 | /* Must be g++ version 1. */ | |
c5aa993b | 2357 | new_sublist->fn_field.fcontext = 0; |
c906108c SS |
2358 | } |
2359 | else | |
2360 | { | |
2361 | /* Figure out from whence this virtual function came. | |
2362 | It may belong to virtual function table of | |
2363 | one of its baseclasses. */ | |
2364 | look_ahead_type = read_type (pp, objfile); | |
2365 | if (**pp == ':') | |
2366 | { | |
2367 | /* g++ version 1 overloaded methods. */ | |
2368 | } | |
2369 | else | |
2370 | { | |
c5aa993b | 2371 | new_sublist->fn_field.fcontext = look_ahead_type; |
c906108c SS |
2372 | if (**pp != ';') |
2373 | { | |
2374 | return 0; | |
2375 | } | |
2376 | else | |
2377 | { | |
2378 | ++*pp; | |
2379 | } | |
2380 | look_ahead_type = NULL; | |
2381 | } | |
2382 | } | |
2383 | break; | |
2384 | } | |
c5aa993b JM |
2385 | case '?': |
2386 | /* static member function. */ | |
4ea09c10 PS |
2387 | { |
2388 | int slen = strlen (main_fn_name); | |
2389 | ||
2390 | new_sublist->fn_field.voffset = VOFFSET_STATIC; | |
2391 | ||
2392 | /* For static member functions, we can't tell if they | |
2393 | are stubbed, as they are put out as functions, and not as | |
2394 | methods. | |
2395 | GCC v2 emits the fully mangled name if | |
2396 | dbxout.c:flag_minimal_debug is not set, so we have to | |
2397 | detect a fully mangled physname here and set is_stub | |
2398 | accordingly. Fully mangled physnames in v2 start with | |
2399 | the member function name, followed by two underscores. | |
2400 | GCC v3 currently always emits stubbed member functions, | |
2401 | but with fully mangled physnames, which start with _Z. */ | |
2402 | if (!(strncmp (new_sublist->fn_field.physname, | |
2403 | main_fn_name, slen) == 0 | |
2404 | && new_sublist->fn_field.physname[slen] == '_' | |
2405 | && new_sublist->fn_field.physname[slen + 1] == '_')) | |
2406 | { | |
2407 | new_sublist->fn_field.is_stub = 1; | |
2408 | } | |
2409 | break; | |
2410 | } | |
c5aa993b JM |
2411 | |
2412 | default: | |
2413 | /* error */ | |
23136709 KB |
2414 | complaint (&symfile_complaints, |
2415 | "member function type missing, got '%c'", (*pp)[-1]); | |
c5aa993b JM |
2416 | /* Fall through into normal member function. */ |
2417 | ||
2418 | case '.': | |
2419 | /* normal member function. */ | |
2420 | new_sublist->fn_field.voffset = 0; | |
2421 | new_sublist->fn_field.fcontext = 0; | |
2422 | break; | |
c906108c | 2423 | } |
c5aa993b JM |
2424 | |
2425 | new_sublist->next = sublist; | |
c906108c SS |
2426 | sublist = new_sublist; |
2427 | length++; | |
2428 | STABS_CONTINUE (pp, objfile); | |
2429 | } | |
2430 | while (**pp != ';' && **pp != '\0'); | |
c5aa993b | 2431 | |
c906108c | 2432 | (*pp)++; |
0c867556 | 2433 | STABS_CONTINUE (pp, objfile); |
c5aa993b | 2434 | |
0c867556 PS |
2435 | /* Skip GCC 3.X member functions which are duplicates of the callable |
2436 | constructor/destructor. */ | |
2437 | if (strcmp (main_fn_name, "__base_ctor") == 0 | |
2438 | || strcmp (main_fn_name, "__base_dtor") == 0 | |
2439 | || strcmp (main_fn_name, "__deleting_dtor") == 0) | |
c906108c | 2440 | { |
0c867556 | 2441 | xfree (main_fn_name); |
c906108c | 2442 | } |
0c867556 PS |
2443 | else |
2444 | { | |
de17c821 DJ |
2445 | int has_stub = 0; |
2446 | int has_destructor = 0, has_other = 0; | |
2447 | int is_v3 = 0; | |
2448 | struct next_fnfield *tmp_sublist; | |
2449 | ||
2450 | /* Various versions of GCC emit various mostly-useless | |
2451 | strings in the name field for special member functions. | |
2452 | ||
2453 | For stub methods, we need to defer correcting the name | |
2454 | until we are ready to unstub the method, because the current | |
2455 | name string is used by gdb_mangle_name. The only stub methods | |
2456 | of concern here are GNU v2 operators; other methods have their | |
2457 | names correct (see caveat below). | |
2458 | ||
2459 | For non-stub methods, in GNU v3, we have a complete physname. | |
2460 | Therefore we can safely correct the name now. This primarily | |
2461 | affects constructors and destructors, whose name will be | |
2462 | __comp_ctor or __comp_dtor instead of Foo or ~Foo. Cast | |
2463 | operators will also have incorrect names; for instance, | |
2464 | "operator int" will be named "operator i" (i.e. the type is | |
2465 | mangled). | |
2466 | ||
2467 | For non-stub methods in GNU v2, we have no easy way to | |
2468 | know if we have a complete physname or not. For most | |
2469 | methods the result depends on the platform (if CPLUS_MARKER | |
2470 | can be `$' or `.', it will use minimal debug information, or | |
2471 | otherwise the full physname will be included). | |
2472 | ||
2473 | Rather than dealing with this, we take a different approach. | |
2474 | For v3 mangled names, we can use the full physname; for v2, | |
2475 | we use cplus_demangle_opname (which is actually v2 specific), | |
2476 | because the only interesting names are all operators - once again | |
2477 | barring the caveat below. Skip this process if any method in the | |
2478 | group is a stub, to prevent our fouling up the workings of | |
2479 | gdb_mangle_name. | |
2480 | ||
2481 | The caveat: GCC 2.95.x (and earlier?) put constructors and | |
2482 | destructors in the same method group. We need to split this | |
2483 | into two groups, because they should have different names. | |
2484 | So for each method group we check whether it contains both | |
2485 | routines whose physname appears to be a destructor (the physnames | |
2486 | for and destructors are always provided, due to quirks in v2 | |
2487 | mangling) and routines whose physname does not appear to be a | |
2488 | destructor. If so then we break up the list into two halves. | |
2489 | Even if the constructors and destructors aren't in the same group | |
2490 | the destructor will still lack the leading tilde, so that also | |
2491 | needs to be fixed. | |
2492 | ||
2493 | So, to summarize what we expect and handle here: | |
2494 | ||
2495 | Given Given Real Real Action | |
2496 | method name physname physname method name | |
2497 | ||
2498 | __opi [none] __opi__3Foo operator int opname | |
2499 | [now or later] | |
2500 | Foo _._3Foo _._3Foo ~Foo separate and | |
2501 | rename | |
2502 | operator i _ZN3FoocviEv _ZN3FoocviEv operator int demangle | |
2503 | __comp_ctor _ZN3FooC1ERKS_ _ZN3FooC1ERKS_ Foo demangle | |
2504 | */ | |
2505 | ||
2506 | tmp_sublist = sublist; | |
2507 | while (tmp_sublist != NULL) | |
2508 | { | |
2509 | if (tmp_sublist->fn_field.is_stub) | |
2510 | has_stub = 1; | |
2511 | if (tmp_sublist->fn_field.physname[0] == '_' | |
2512 | && tmp_sublist->fn_field.physname[1] == 'Z') | |
2513 | is_v3 = 1; | |
2514 | ||
2515 | if (is_destructor_name (tmp_sublist->fn_field.physname)) | |
2516 | has_destructor++; | |
2517 | else | |
2518 | has_other++; | |
2519 | ||
2520 | tmp_sublist = tmp_sublist->next; | |
2521 | } | |
2522 | ||
2523 | if (has_destructor && has_other) | |
2524 | { | |
2525 | struct next_fnfieldlist *destr_fnlist; | |
2526 | struct next_fnfield *last_sublist; | |
2527 | ||
2528 | /* Create a new fn_fieldlist for the destructors. */ | |
2529 | ||
2530 | destr_fnlist = (struct next_fnfieldlist *) | |
2531 | xmalloc (sizeof (struct next_fnfieldlist)); | |
2532 | make_cleanup (xfree, destr_fnlist); | |
2533 | memset (destr_fnlist, 0, sizeof (struct next_fnfieldlist)); | |
2534 | destr_fnlist->fn_fieldlist.name | |
2535 | = obconcat (&objfile->type_obstack, "", "~", | |
2536 | new_fnlist->fn_fieldlist.name); | |
2537 | ||
2538 | destr_fnlist->fn_fieldlist.fn_fields = (struct fn_field *) | |
2539 | obstack_alloc (&objfile->type_obstack, | |
2540 | sizeof (struct fn_field) * has_destructor); | |
2541 | memset (destr_fnlist->fn_fieldlist.fn_fields, 0, | |
2542 | sizeof (struct fn_field) * has_destructor); | |
2543 | tmp_sublist = sublist; | |
2544 | last_sublist = NULL; | |
2545 | i = 0; | |
2546 | while (tmp_sublist != NULL) | |
2547 | { | |
2548 | if (!is_destructor_name (tmp_sublist->fn_field.physname)) | |
2549 | { | |
2550 | tmp_sublist = tmp_sublist->next; | |
2551 | continue; | |
2552 | } | |
2553 | ||
2554 | destr_fnlist->fn_fieldlist.fn_fields[i++] | |
2555 | = tmp_sublist->fn_field; | |
2556 | if (last_sublist) | |
2557 | last_sublist->next = tmp_sublist->next; | |
2558 | else | |
2559 | sublist = tmp_sublist->next; | |
2560 | last_sublist = tmp_sublist; | |
2561 | tmp_sublist = tmp_sublist->next; | |
2562 | } | |
2563 | ||
2564 | destr_fnlist->fn_fieldlist.length = has_destructor; | |
2565 | destr_fnlist->next = fip->fnlist; | |
2566 | fip->fnlist = destr_fnlist; | |
2567 | nfn_fields++; | |
2568 | total_length += has_destructor; | |
2569 | length -= has_destructor; | |
2570 | } | |
2571 | else if (is_v3) | |
2572 | { | |
2573 | /* v3 mangling prevents the use of abbreviated physnames, | |
2574 | so we can do this here. There are stubbed methods in v3 | |
2575 | only: | |
2576 | - in -gstabs instead of -gstabs+ | |
2577 | - or for static methods, which are output as a function type | |
2578 | instead of a method type. */ | |
2579 | ||
2580 | update_method_name_from_physname (&new_fnlist->fn_fieldlist.name, | |
2581 | sublist->fn_field.physname); | |
2582 | } | |
2583 | else if (has_destructor && new_fnlist->fn_fieldlist.name[0] != '~') | |
2584 | { | |
2585 | new_fnlist->fn_fieldlist.name = concat ("~", main_fn_name, NULL); | |
2586 | xfree (main_fn_name); | |
2587 | } | |
2588 | else if (!has_stub) | |
2589 | { | |
2590 | char dem_opname[256]; | |
2591 | int ret; | |
2592 | ret = cplus_demangle_opname (new_fnlist->fn_fieldlist.name, | |
2593 | dem_opname, DMGL_ANSI); | |
2594 | if (!ret) | |
2595 | ret = cplus_demangle_opname (new_fnlist->fn_fieldlist.name, | |
2596 | dem_opname, 0); | |
2597 | if (ret) | |
2598 | new_fnlist->fn_fieldlist.name | |
2599 | = obsavestring (dem_opname, strlen (dem_opname), | |
2600 | &objfile->type_obstack); | |
2601 | } | |
2602 | ||
0c867556 PS |
2603 | new_fnlist->fn_fieldlist.fn_fields = (struct fn_field *) |
2604 | obstack_alloc (&objfile->type_obstack, | |
2605 | sizeof (struct fn_field) * length); | |
2606 | memset (new_fnlist->fn_fieldlist.fn_fields, 0, | |
2607 | sizeof (struct fn_field) * length); | |
2608 | for (i = length; (i--, sublist); sublist = sublist->next) | |
2609 | { | |
2610 | new_fnlist->fn_fieldlist.fn_fields[i] = sublist->fn_field; | |
2611 | } | |
c5aa993b | 2612 | |
0c867556 PS |
2613 | new_fnlist->fn_fieldlist.length = length; |
2614 | new_fnlist->next = fip->fnlist; | |
2615 | fip->fnlist = new_fnlist; | |
2616 | nfn_fields++; | |
2617 | total_length += length; | |
2618 | } | |
c906108c SS |
2619 | } |
2620 | ||
2621 | if (nfn_fields) | |
2622 | { | |
2623 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
2624 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
2625 | TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * nfn_fields); | |
2626 | memset (TYPE_FN_FIELDLISTS (type), 0, | |
2627 | sizeof (struct fn_fieldlist) * nfn_fields); | |
2628 | TYPE_NFN_FIELDS (type) = nfn_fields; | |
2629 | TYPE_NFN_FIELDS_TOTAL (type) = total_length; | |
2630 | } | |
2631 | ||
2632 | return 1; | |
2633 | } | |
2634 | ||
2635 | /* Special GNU C++ name. | |
2636 | ||
2637 | Returns 1 for success, 0 for failure. "failure" means that we can't | |
2638 | keep parsing and it's time for error_type(). */ | |
2639 | ||
2640 | static int | |
fba45db2 KB |
2641 | read_cpp_abbrev (struct field_info *fip, char **pp, struct type *type, |
2642 | struct objfile *objfile) | |
c906108c | 2643 | { |
52f0bd74 | 2644 | char *p; |
c906108c SS |
2645 | char *name; |
2646 | char cpp_abbrev; | |
2647 | struct type *context; | |
2648 | ||
2649 | p = *pp; | |
2650 | if (*++p == 'v') | |
2651 | { | |
2652 | name = NULL; | |
2653 | cpp_abbrev = *++p; | |
2654 | ||
2655 | *pp = p + 1; | |
2656 | ||
2657 | /* At this point, *pp points to something like "22:23=*22...", | |
c5aa993b JM |
2658 | where the type number before the ':' is the "context" and |
2659 | everything after is a regular type definition. Lookup the | |
2660 | type, find it's name, and construct the field name. */ | |
c906108c SS |
2661 | |
2662 | context = read_type (pp, objfile); | |
2663 | ||
2664 | switch (cpp_abbrev) | |
2665 | { | |
c5aa993b | 2666 | case 'f': /* $vf -- a virtual function table pointer */ |
c2bd2ed9 JB |
2667 | name = type_name_no_tag (context); |
2668 | if (name == NULL) | |
2669 | { | |
2670 | name = ""; | |
2671 | } | |
c5aa993b | 2672 | fip->list->field.name = |
c2bd2ed9 | 2673 | obconcat (&objfile->type_obstack, vptr_name, name, ""); |
c5aa993b | 2674 | break; |
c906108c | 2675 | |
c5aa993b JM |
2676 | case 'b': /* $vb -- a virtual bsomethingorother */ |
2677 | name = type_name_no_tag (context); | |
2678 | if (name == NULL) | |
2679 | { | |
23136709 KB |
2680 | complaint (&symfile_complaints, |
2681 | "C++ abbreviated type name unknown at symtab pos %d", | |
2682 | symnum); | |
c5aa993b JM |
2683 | name = "FOO"; |
2684 | } | |
2685 | fip->list->field.name = | |
2686 | obconcat (&objfile->type_obstack, vb_name, name, ""); | |
2687 | break; | |
c906108c | 2688 | |
c5aa993b | 2689 | default: |
23136709 | 2690 | invalid_cpp_abbrev_complaint (*pp); |
c5aa993b JM |
2691 | fip->list->field.name = |
2692 | obconcat (&objfile->type_obstack, | |
2693 | "INVALID_CPLUSPLUS_ABBREV", "", ""); | |
2694 | break; | |
c906108c SS |
2695 | } |
2696 | ||
2697 | /* At this point, *pp points to the ':'. Skip it and read the | |
c5aa993b | 2698 | field type. */ |
c906108c SS |
2699 | |
2700 | p = ++(*pp); | |
2701 | if (p[-1] != ':') | |
2702 | { | |
23136709 | 2703 | invalid_cpp_abbrev_complaint (*pp); |
c906108c SS |
2704 | return 0; |
2705 | } | |
2706 | fip->list->field.type = read_type (pp, objfile); | |
2707 | if (**pp == ',') | |
c5aa993b | 2708 | (*pp)++; /* Skip the comma. */ |
c906108c SS |
2709 | else |
2710 | return 0; | |
2711 | ||
2712 | { | |
2713 | int nbits; | |
2714 | FIELD_BITPOS (fip->list->field) = read_huge_number (pp, ';', &nbits); | |
2715 | if (nbits != 0) | |
2716 | return 0; | |
2717 | } | |
2718 | /* This field is unpacked. */ | |
2719 | FIELD_BITSIZE (fip->list->field) = 0; | |
2720 | fip->list->visibility = VISIBILITY_PRIVATE; | |
2721 | } | |
2722 | else | |
2723 | { | |
23136709 | 2724 | invalid_cpp_abbrev_complaint (*pp); |
c906108c | 2725 | /* We have no idea what syntax an unrecognized abbrev would have, so |
c5aa993b JM |
2726 | better return 0. If we returned 1, we would need to at least advance |
2727 | *pp to avoid an infinite loop. */ | |
c906108c SS |
2728 | return 0; |
2729 | } | |
2730 | return 1; | |
2731 | } | |
2732 | ||
2733 | static void | |
fba45db2 KB |
2734 | read_one_struct_field (struct field_info *fip, char **pp, char *p, |
2735 | struct type *type, struct objfile *objfile) | |
c906108c | 2736 | { |
41989fcd AC |
2737 | fip->list->field.name = |
2738 | obsavestring (*pp, p - *pp, &objfile->type_obstack); | |
c906108c SS |
2739 | *pp = p + 1; |
2740 | ||
2741 | /* This means we have a visibility for a field coming. */ | |
2742 | if (**pp == '/') | |
2743 | { | |
2744 | (*pp)++; | |
c5aa993b | 2745 | fip->list->visibility = *(*pp)++; |
c906108c SS |
2746 | } |
2747 | else | |
2748 | { | |
2749 | /* normal dbx-style format, no explicit visibility */ | |
c5aa993b | 2750 | fip->list->visibility = VISIBILITY_PUBLIC; |
c906108c SS |
2751 | } |
2752 | ||
c5aa993b | 2753 | fip->list->field.type = read_type (pp, objfile); |
c906108c SS |
2754 | if (**pp == ':') |
2755 | { | |
2756 | p = ++(*pp); | |
2757 | #if 0 | |
2758 | /* Possible future hook for nested types. */ | |
2759 | if (**pp == '!') | |
2760 | { | |
c5aa993b | 2761 | fip->list->field.bitpos = (long) -2; /* nested type */ |
c906108c SS |
2762 | p = ++(*pp); |
2763 | } | |
c5aa993b JM |
2764 | else |
2765 | ...; | |
c906108c | 2766 | #endif |
c5aa993b | 2767 | while (*p != ';') |
c906108c SS |
2768 | { |
2769 | p++; | |
2770 | } | |
2771 | /* Static class member. */ | |
2772 | SET_FIELD_PHYSNAME (fip->list->field, savestring (*pp, p - *pp)); | |
2773 | *pp = p + 1; | |
2774 | return; | |
2775 | } | |
2776 | else if (**pp != ',') | |
2777 | { | |
2778 | /* Bad structure-type format. */ | |
23136709 | 2779 | stabs_general_complaint ("bad structure-type format"); |
c906108c SS |
2780 | return; |
2781 | } | |
2782 | ||
2783 | (*pp)++; /* Skip the comma. */ | |
2784 | ||
2785 | { | |
2786 | int nbits; | |
2787 | FIELD_BITPOS (fip->list->field) = read_huge_number (pp, ',', &nbits); | |
2788 | if (nbits != 0) | |
2789 | { | |
23136709 | 2790 | stabs_general_complaint ("bad structure-type format"); |
c906108c SS |
2791 | return; |
2792 | } | |
2793 | FIELD_BITSIZE (fip->list->field) = read_huge_number (pp, ';', &nbits); | |
2794 | if (nbits != 0) | |
2795 | { | |
23136709 | 2796 | stabs_general_complaint ("bad structure-type format"); |
c906108c SS |
2797 | return; |
2798 | } | |
2799 | } | |
2800 | ||
2801 | if (FIELD_BITPOS (fip->list->field) == 0 | |
2802 | && FIELD_BITSIZE (fip->list->field) == 0) | |
2803 | { | |
2804 | /* This can happen in two cases: (1) at least for gcc 2.4.5 or so, | |
c5aa993b JM |
2805 | it is a field which has been optimized out. The correct stab for |
2806 | this case is to use VISIBILITY_IGNORE, but that is a recent | |
2807 | invention. (2) It is a 0-size array. For example | |
2808 | union { int num; char str[0]; } foo. Printing "<no value>" for | |
2809 | str in "p foo" is OK, since foo.str (and thus foo.str[3]) | |
2810 | will continue to work, and a 0-size array as a whole doesn't | |
2811 | have any contents to print. | |
2812 | ||
2813 | I suspect this probably could also happen with gcc -gstabs (not | |
2814 | -gstabs+) for static fields, and perhaps other C++ extensions. | |
2815 | Hopefully few people use -gstabs with gdb, since it is intended | |
2816 | for dbx compatibility. */ | |
c906108c SS |
2817 | |
2818 | /* Ignore this field. */ | |
c5aa993b | 2819 | fip->list->visibility = VISIBILITY_IGNORE; |
c906108c SS |
2820 | } |
2821 | else | |
2822 | { | |
2823 | /* Detect an unpacked field and mark it as such. | |
c5aa993b JM |
2824 | dbx gives a bit size for all fields. |
2825 | Note that forward refs cannot be packed, | |
2826 | and treat enums as if they had the width of ints. */ | |
c906108c SS |
2827 | |
2828 | struct type *field_type = check_typedef (FIELD_TYPE (fip->list->field)); | |
2829 | ||
2830 | if (TYPE_CODE (field_type) != TYPE_CODE_INT | |
2831 | && TYPE_CODE (field_type) != TYPE_CODE_RANGE | |
2832 | && TYPE_CODE (field_type) != TYPE_CODE_BOOL | |
2833 | && TYPE_CODE (field_type) != TYPE_CODE_ENUM) | |
2834 | { | |
2835 | FIELD_BITSIZE (fip->list->field) = 0; | |
2836 | } | |
c5aa993b | 2837 | if ((FIELD_BITSIZE (fip->list->field) |
c906108c SS |
2838 | == TARGET_CHAR_BIT * TYPE_LENGTH (field_type) |
2839 | || (TYPE_CODE (field_type) == TYPE_CODE_ENUM | |
c5aa993b JM |
2840 | && FIELD_BITSIZE (fip->list->field) == TARGET_INT_BIT) |
2841 | ) | |
c906108c SS |
2842 | && |
2843 | FIELD_BITPOS (fip->list->field) % 8 == 0) | |
2844 | { | |
2845 | FIELD_BITSIZE (fip->list->field) = 0; | |
2846 | } | |
2847 | } | |
2848 | } | |
2849 | ||
2850 | ||
2851 | /* Read struct or class data fields. They have the form: | |
2852 | ||
c5aa993b | 2853 | NAME : [VISIBILITY] TYPENUM , BITPOS , BITSIZE ; |
c906108c SS |
2854 | |
2855 | At the end, we see a semicolon instead of a field. | |
2856 | ||
2857 | In C++, this may wind up being NAME:?TYPENUM:PHYSNAME; for | |
2858 | a static field. | |
2859 | ||
2860 | The optional VISIBILITY is one of: | |
2861 | ||
c5aa993b JM |
2862 | '/0' (VISIBILITY_PRIVATE) |
2863 | '/1' (VISIBILITY_PROTECTED) | |
2864 | '/2' (VISIBILITY_PUBLIC) | |
2865 | '/9' (VISIBILITY_IGNORE) | |
c906108c SS |
2866 | |
2867 | or nothing, for C style fields with public visibility. | |
2868 | ||
2869 | Returns 1 for success, 0 for failure. */ | |
2870 | ||
2871 | static int | |
fba45db2 KB |
2872 | read_struct_fields (struct field_info *fip, char **pp, struct type *type, |
2873 | struct objfile *objfile) | |
c906108c | 2874 | { |
52f0bd74 | 2875 | char *p; |
c906108c SS |
2876 | struct nextfield *new; |
2877 | ||
2878 | /* We better set p right now, in case there are no fields at all... */ | |
2879 | ||
2880 | p = *pp; | |
2881 | ||
2882 | /* Read each data member type until we find the terminating ';' at the end of | |
2883 | the data member list, or break for some other reason such as finding the | |
2884 | start of the member function list. */ | |
fedbd091 EZ |
2885 | /* Stab string for structure/union does not end with two ';' in |
2886 | SUN C compiler 5.3 i.e. F6U2, hence check for end of string. */ | |
c906108c | 2887 | |
fedbd091 | 2888 | while (**pp != ';' && **pp != '\0') |
c906108c | 2889 | { |
c906108c SS |
2890 | STABS_CONTINUE (pp, objfile); |
2891 | /* Get space to record the next field's data. */ | |
2892 | new = (struct nextfield *) xmalloc (sizeof (struct nextfield)); | |
b8c9b27d | 2893 | make_cleanup (xfree, new); |
c906108c | 2894 | memset (new, 0, sizeof (struct nextfield)); |
c5aa993b JM |
2895 | new->next = fip->list; |
2896 | fip->list = new; | |
c906108c SS |
2897 | |
2898 | /* Get the field name. */ | |
2899 | p = *pp; | |
2900 | ||
2901 | /* If is starts with CPLUS_MARKER it is a special abbreviation, | |
c5aa993b JM |
2902 | unless the CPLUS_MARKER is followed by an underscore, in |
2903 | which case it is just the name of an anonymous type, which we | |
2904 | should handle like any other type name. */ | |
c906108c SS |
2905 | |
2906 | if (is_cplus_marker (p[0]) && p[1] != '_') | |
2907 | { | |
2908 | if (!read_cpp_abbrev (fip, pp, type, objfile)) | |
2909 | return 0; | |
2910 | continue; | |
2911 | } | |
2912 | ||
2913 | /* Look for the ':' that separates the field name from the field | |
c5aa993b JM |
2914 | values. Data members are delimited by a single ':', while member |
2915 | functions are delimited by a pair of ':'s. When we hit the member | |
2916 | functions (if any), terminate scan loop and return. */ | |
c906108c | 2917 | |
c5aa993b | 2918 | while (*p != ':' && *p != '\0') |
c906108c SS |
2919 | { |
2920 | p++; | |
2921 | } | |
2922 | if (*p == '\0') | |
2923 | return 0; | |
2924 | ||
2925 | /* Check to see if we have hit the member functions yet. */ | |
2926 | if (p[1] == ':') | |
2927 | { | |
2928 | break; | |
2929 | } | |
2930 | read_one_struct_field (fip, pp, p, type, objfile); | |
2931 | } | |
2932 | if (p[0] == ':' && p[1] == ':') | |
2933 | { | |
1b831c93 AC |
2934 | /* (the deleted) chill the list of fields: the last entry (at |
2935 | the head) is a partially constructed entry which we now | |
2936 | scrub. */ | |
c5aa993b | 2937 | fip->list = fip->list->next; |
c906108c SS |
2938 | } |
2939 | return 1; | |
2940 | } | |
9846de1b | 2941 | /* *INDENT-OFF* */ |
c906108c SS |
2942 | /* The stabs for C++ derived classes contain baseclass information which |
2943 | is marked by a '!' character after the total size. This function is | |
2944 | called when we encounter the baseclass marker, and slurps up all the | |
2945 | baseclass information. | |
2946 | ||
2947 | Immediately following the '!' marker is the number of base classes that | |
2948 | the class is derived from, followed by information for each base class. | |
2949 | For each base class, there are two visibility specifiers, a bit offset | |
2950 | to the base class information within the derived class, a reference to | |
2951 | the type for the base class, and a terminating semicolon. | |
2952 | ||
2953 | A typical example, with two base classes, would be "!2,020,19;0264,21;". | |
2954 | ^^ ^ ^ ^ ^ ^ ^ | |
2955 | Baseclass information marker __________________|| | | | | | | | |
2956 | Number of baseclasses __________________________| | | | | | | | |
2957 | Visibility specifiers (2) ________________________| | | | | | | |
2958 | Offset in bits from start of class _________________| | | | | | |
2959 | Type number for base class ___________________________| | | | | |
2960 | Visibility specifiers (2) _______________________________| | | | |
2961 | Offset in bits from start of class ________________________| | | |
2962 | Type number of base class ____________________________________| | |
2963 | ||
2964 | Return 1 for success, 0 for (error-type-inducing) failure. */ | |
9846de1b | 2965 | /* *INDENT-ON* */ |
c906108c | 2966 | |
c5aa993b JM |
2967 | |
2968 | ||
c906108c | 2969 | static int |
fba45db2 KB |
2970 | read_baseclasses (struct field_info *fip, char **pp, struct type *type, |
2971 | struct objfile *objfile) | |
c906108c SS |
2972 | { |
2973 | int i; | |
2974 | struct nextfield *new; | |
2975 | ||
2976 | if (**pp != '!') | |
2977 | { | |
2978 | return 1; | |
2979 | } | |
2980 | else | |
2981 | { | |
2982 | /* Skip the '!' baseclass information marker. */ | |
2983 | (*pp)++; | |
2984 | } | |
2985 | ||
2986 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
2987 | { | |
2988 | int nbits; | |
2989 | TYPE_N_BASECLASSES (type) = read_huge_number (pp, ',', &nbits); | |
2990 | if (nbits != 0) | |
2991 | return 0; | |
2992 | } | |
2993 | ||
2994 | #if 0 | |
2995 | /* Some stupid compilers have trouble with the following, so break | |
2996 | it up into simpler expressions. */ | |
2997 | TYPE_FIELD_VIRTUAL_BITS (type) = (B_TYPE *) | |
2998 | TYPE_ALLOC (type, B_BYTES (TYPE_N_BASECLASSES (type))); | |
2999 | #else | |
3000 | { | |
3001 | int num_bytes = B_BYTES (TYPE_N_BASECLASSES (type)); | |
3002 | char *pointer; | |
3003 | ||
3004 | pointer = (char *) TYPE_ALLOC (type, num_bytes); | |
3005 | TYPE_FIELD_VIRTUAL_BITS (type) = (B_TYPE *) pointer; | |
3006 | } | |
3007 | #endif /* 0 */ | |
3008 | ||
3009 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), TYPE_N_BASECLASSES (type)); | |
3010 | ||
3011 | for (i = 0; i < TYPE_N_BASECLASSES (type); i++) | |
3012 | { | |
3013 | new = (struct nextfield *) xmalloc (sizeof (struct nextfield)); | |
b8c9b27d | 3014 | make_cleanup (xfree, new); |
c906108c | 3015 | memset (new, 0, sizeof (struct nextfield)); |
c5aa993b JM |
3016 | new->next = fip->list; |
3017 | fip->list = new; | |
c906108c SS |
3018 | FIELD_BITSIZE (new->field) = 0; /* this should be an unpacked field! */ |
3019 | ||
3020 | STABS_CONTINUE (pp, objfile); | |
3021 | switch (**pp) | |
3022 | { | |
c5aa993b JM |
3023 | case '0': |
3024 | /* Nothing to do. */ | |
3025 | break; | |
3026 | case '1': | |
3027 | SET_TYPE_FIELD_VIRTUAL (type, i); | |
3028 | break; | |
3029 | default: | |
3030 | /* Unknown character. Complain and treat it as non-virtual. */ | |
3031 | { | |
23136709 KB |
3032 | complaint (&symfile_complaints, |
3033 | "Unknown virtual character `%c' for baseclass", **pp); | |
c5aa993b | 3034 | } |
c906108c SS |
3035 | } |
3036 | ++(*pp); | |
3037 | ||
c5aa993b JM |
3038 | new->visibility = *(*pp)++; |
3039 | switch (new->visibility) | |
c906108c | 3040 | { |
c5aa993b JM |
3041 | case VISIBILITY_PRIVATE: |
3042 | case VISIBILITY_PROTECTED: | |
3043 | case VISIBILITY_PUBLIC: | |
3044 | break; | |
3045 | default: | |
3046 | /* Bad visibility format. Complain and treat it as | |
3047 | public. */ | |
3048 | { | |
23136709 KB |
3049 | complaint (&symfile_complaints, |
3050 | "Unknown visibility `%c' for baseclass", | |
3051 | new->visibility); | |
c5aa993b JM |
3052 | new->visibility = VISIBILITY_PUBLIC; |
3053 | } | |
c906108c SS |
3054 | } |
3055 | ||
3056 | { | |
3057 | int nbits; | |
c5aa993b | 3058 | |
c906108c SS |
3059 | /* The remaining value is the bit offset of the portion of the object |
3060 | corresponding to this baseclass. Always zero in the absence of | |
3061 | multiple inheritance. */ | |
3062 | ||
3063 | FIELD_BITPOS (new->field) = read_huge_number (pp, ',', &nbits); | |
3064 | if (nbits != 0) | |
3065 | return 0; | |
3066 | } | |
3067 | ||
3068 | /* The last piece of baseclass information is the type of the | |
c5aa993b JM |
3069 | base class. Read it, and remember it's type name as this |
3070 | field's name. */ | |
c906108c | 3071 | |
c5aa993b JM |
3072 | new->field.type = read_type (pp, objfile); |
3073 | new->field.name = type_name_no_tag (new->field.type); | |
c906108c SS |
3074 | |
3075 | /* skip trailing ';' and bump count of number of fields seen */ | |
3076 | if (**pp == ';') | |
3077 | (*pp)++; | |
3078 | else | |
3079 | return 0; | |
3080 | } | |
3081 | return 1; | |
3082 | } | |
3083 | ||
3084 | /* The tail end of stabs for C++ classes that contain a virtual function | |
3085 | pointer contains a tilde, a %, and a type number. | |
3086 | The type number refers to the base class (possibly this class itself) which | |
3087 | contains the vtable pointer for the current class. | |
3088 | ||
3089 | This function is called when we have parsed all the method declarations, | |
3090 | so we can look for the vptr base class info. */ | |
3091 | ||
3092 | static int | |
fba45db2 KB |
3093 | read_tilde_fields (struct field_info *fip, char **pp, struct type *type, |
3094 | struct objfile *objfile) | |
c906108c | 3095 | { |
52f0bd74 | 3096 | char *p; |
c906108c SS |
3097 | |
3098 | STABS_CONTINUE (pp, objfile); | |
3099 | ||
3100 | /* If we are positioned at a ';', then skip it. */ | |
3101 | if (**pp == ';') | |
3102 | { | |
3103 | (*pp)++; | |
3104 | } | |
3105 | ||
3106 | if (**pp == '~') | |
3107 | { | |
3108 | (*pp)++; | |
3109 | ||
3110 | if (**pp == '=' || **pp == '+' || **pp == '-') | |
3111 | { | |
3112 | /* Obsolete flags that used to indicate the presence | |
3113 | of constructors and/or destructors. */ | |
3114 | (*pp)++; | |
3115 | } | |
3116 | ||
3117 | /* Read either a '%' or the final ';'. */ | |
3118 | if (*(*pp)++ == '%') | |
3119 | { | |
3120 | /* The next number is the type number of the base class | |
3121 | (possibly our own class) which supplies the vtable for | |
3122 | this class. Parse it out, and search that class to find | |
3123 | its vtable pointer, and install those into TYPE_VPTR_BASETYPE | |
3124 | and TYPE_VPTR_FIELDNO. */ | |
3125 | ||
3126 | struct type *t; | |
3127 | int i; | |
3128 | ||
3129 | t = read_type (pp, objfile); | |
3130 | p = (*pp)++; | |
3131 | while (*p != '\0' && *p != ';') | |
3132 | { | |
3133 | p++; | |
3134 | } | |
3135 | if (*p == '\0') | |
3136 | { | |
3137 | /* Premature end of symbol. */ | |
3138 | return 0; | |
3139 | } | |
c5aa993b | 3140 | |
c906108c | 3141 | TYPE_VPTR_BASETYPE (type) = t; |
c5aa993b | 3142 | if (type == t) /* Our own class provides vtbl ptr */ |
c906108c SS |
3143 | { |
3144 | for (i = TYPE_NFIELDS (t) - 1; | |
3145 | i >= TYPE_N_BASECLASSES (t); | |
3146 | --i) | |
3147 | { | |
8343f86c DJ |
3148 | char *name = TYPE_FIELD_NAME (t, i); |
3149 | if (!strncmp (name, vptr_name, sizeof (vptr_name) - 2) | |
74451869 | 3150 | && is_cplus_marker (name[sizeof (vptr_name) - 2])) |
c906108c SS |
3151 | { |
3152 | TYPE_VPTR_FIELDNO (type) = i; | |
3153 | goto gotit; | |
3154 | } | |
3155 | } | |
3156 | /* Virtual function table field not found. */ | |
23136709 KB |
3157 | complaint (&symfile_complaints, |
3158 | "virtual function table pointer not found when defining class `%s'", | |
3159 | TYPE_NAME (type)); | |
c906108c SS |
3160 | return 0; |
3161 | } | |
3162 | else | |
3163 | { | |
3164 | TYPE_VPTR_FIELDNO (type) = TYPE_VPTR_FIELDNO (t); | |
3165 | } | |
3166 | ||
c5aa993b | 3167 | gotit: |
c906108c SS |
3168 | *pp = p + 1; |
3169 | } | |
3170 | } | |
3171 | return 1; | |
3172 | } | |
3173 | ||
3174 | static int | |
aa1ee363 | 3175 | attach_fn_fields_to_type (struct field_info *fip, struct type *type) |
c906108c | 3176 | { |
52f0bd74 | 3177 | int n; |
c906108c SS |
3178 | |
3179 | for (n = TYPE_NFN_FIELDS (type); | |
c5aa993b JM |
3180 | fip->fnlist != NULL; |
3181 | fip->fnlist = fip->fnlist->next) | |
c906108c | 3182 | { |
c5aa993b JM |
3183 | --n; /* Circumvent Sun3 compiler bug */ |
3184 | TYPE_FN_FIELDLISTS (type)[n] = fip->fnlist->fn_fieldlist; | |
c906108c SS |
3185 | } |
3186 | return 1; | |
3187 | } | |
3188 | ||
c906108c SS |
3189 | /* Create the vector of fields, and record how big it is. |
3190 | We need this info to record proper virtual function table information | |
3191 | for this class's virtual functions. */ | |
3192 | ||
3193 | static int | |
aa1ee363 | 3194 | attach_fields_to_type (struct field_info *fip, struct type *type, |
fba45db2 | 3195 | struct objfile *objfile) |
c906108c | 3196 | { |
52f0bd74 AC |
3197 | int nfields = 0; |
3198 | int non_public_fields = 0; | |
3199 | struct nextfield *scan; | |
c906108c SS |
3200 | |
3201 | /* Count up the number of fields that we have, as well as taking note of | |
3202 | whether or not there are any non-public fields, which requires us to | |
3203 | allocate and build the private_field_bits and protected_field_bits | |
3204 | bitfields. */ | |
3205 | ||
c5aa993b | 3206 | for (scan = fip->list; scan != NULL; scan = scan->next) |
c906108c SS |
3207 | { |
3208 | nfields++; | |
c5aa993b | 3209 | if (scan->visibility != VISIBILITY_PUBLIC) |
c906108c SS |
3210 | { |
3211 | non_public_fields++; | |
3212 | } | |
3213 | } | |
3214 | ||
3215 | /* Now we know how many fields there are, and whether or not there are any | |
3216 | non-public fields. Record the field count, allocate space for the | |
3217 | array of fields, and create blank visibility bitfields if necessary. */ | |
3218 | ||
3219 | TYPE_NFIELDS (type) = nfields; | |
3220 | TYPE_FIELDS (type) = (struct field *) | |
3221 | TYPE_ALLOC (type, sizeof (struct field) * nfields); | |
3222 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields); | |
3223 | ||
3224 | if (non_public_fields) | |
3225 | { | |
3226 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
3227 | ||
3228 | TYPE_FIELD_PRIVATE_BITS (type) = | |
3229 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
3230 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
3231 | ||
3232 | TYPE_FIELD_PROTECTED_BITS (type) = | |
3233 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
3234 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
3235 | ||
3236 | TYPE_FIELD_IGNORE_BITS (type) = | |
3237 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
3238 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
3239 | } | |
3240 | ||
3241 | /* Copy the saved-up fields into the field vector. Start from the head | |
3242 | of the list, adding to the tail of the field array, so that they end | |
3243 | up in the same order in the array in which they were added to the list. */ | |
3244 | ||
3245 | while (nfields-- > 0) | |
3246 | { | |
c5aa993b JM |
3247 | TYPE_FIELD (type, nfields) = fip->list->field; |
3248 | switch (fip->list->visibility) | |
c906108c | 3249 | { |
c5aa993b JM |
3250 | case VISIBILITY_PRIVATE: |
3251 | SET_TYPE_FIELD_PRIVATE (type, nfields); | |
3252 | break; | |
c906108c | 3253 | |
c5aa993b JM |
3254 | case VISIBILITY_PROTECTED: |
3255 | SET_TYPE_FIELD_PROTECTED (type, nfields); | |
3256 | break; | |
c906108c | 3257 | |
c5aa993b JM |
3258 | case VISIBILITY_IGNORE: |
3259 | SET_TYPE_FIELD_IGNORE (type, nfields); | |
3260 | break; | |
c906108c | 3261 | |
c5aa993b JM |
3262 | case VISIBILITY_PUBLIC: |
3263 | break; | |
c906108c | 3264 | |
c5aa993b JM |
3265 | default: |
3266 | /* Unknown visibility. Complain and treat it as public. */ | |
3267 | { | |
23136709 KB |
3268 | complaint (&symfile_complaints, "Unknown visibility `%c' for field", |
3269 | fip->list->visibility); | |
c5aa993b JM |
3270 | } |
3271 | break; | |
c906108c | 3272 | } |
c5aa993b | 3273 | fip->list = fip->list->next; |
c906108c SS |
3274 | } |
3275 | return 1; | |
3276 | } | |
3277 | ||
2ae1c2d2 | 3278 | |
2ae1c2d2 JB |
3279 | /* Complain that the compiler has emitted more than one definition for the |
3280 | structure type TYPE. */ | |
3281 | static void | |
3282 | complain_about_struct_wipeout (struct type *type) | |
3283 | { | |
3284 | char *name = ""; | |
3285 | char *kind = ""; | |
3286 | ||
3287 | if (TYPE_TAG_NAME (type)) | |
3288 | { | |
3289 | name = TYPE_TAG_NAME (type); | |
3290 | switch (TYPE_CODE (type)) | |
3291 | { | |
3292 | case TYPE_CODE_STRUCT: kind = "struct "; break; | |
3293 | case TYPE_CODE_UNION: kind = "union "; break; | |
3294 | case TYPE_CODE_ENUM: kind = "enum "; break; | |
3295 | default: kind = ""; | |
3296 | } | |
3297 | } | |
3298 | else if (TYPE_NAME (type)) | |
3299 | { | |
3300 | name = TYPE_NAME (type); | |
3301 | kind = ""; | |
3302 | } | |
3303 | else | |
3304 | { | |
3305 | name = "<unknown>"; | |
3306 | kind = ""; | |
3307 | } | |
3308 | ||
23136709 KB |
3309 | complaint (&symfile_complaints, |
3310 | "struct/union type gets multiply defined: %s%s", kind, name); | |
2ae1c2d2 JB |
3311 | } |
3312 | ||
3313 | ||
c906108c SS |
3314 | /* Read the description of a structure (or union type) and return an object |
3315 | describing the type. | |
3316 | ||
3317 | PP points to a character pointer that points to the next unconsumed token | |
3318 | in the the stabs string. For example, given stabs "A:T4=s4a:1,0,32;;", | |
3319 | *PP will point to "4a:1,0,32;;". | |
3320 | ||
3321 | TYPE points to an incomplete type that needs to be filled in. | |
3322 | ||
3323 | OBJFILE points to the current objfile from which the stabs information is | |
3324 | being read. (Note that it is redundant in that TYPE also contains a pointer | |
3325 | to this same objfile, so it might be a good idea to eliminate it. FIXME). | |
c5aa993b | 3326 | */ |
c906108c SS |
3327 | |
3328 | static struct type * | |
2ae1c2d2 JB |
3329 | read_struct_type (char **pp, struct type *type, enum type_code type_code, |
3330 | struct objfile *objfile) | |
c906108c SS |
3331 | { |
3332 | struct cleanup *back_to; | |
3333 | struct field_info fi; | |
3334 | ||
3335 | fi.list = NULL; | |
3336 | fi.fnlist = NULL; | |
3337 | ||
2ae1c2d2 JB |
3338 | /* When describing struct/union/class types in stabs, G++ always drops |
3339 | all qualifications from the name. So if you've got: | |
3340 | struct A { ... struct B { ... }; ... }; | |
3341 | then G++ will emit stabs for `struct A::B' that call it simply | |
3342 | `struct B'. Obviously, if you've got a real top-level definition for | |
3343 | `struct B', or other nested definitions, this is going to cause | |
3344 | problems. | |
3345 | ||
3346 | Obviously, GDB can't fix this by itself, but it can at least avoid | |
3347 | scribbling on existing structure type objects when new definitions | |
3348 | appear. */ | |
3349 | if (! (TYPE_CODE (type) == TYPE_CODE_UNDEF | |
3350 | || TYPE_STUB (type))) | |
3351 | { | |
3352 | complain_about_struct_wipeout (type); | |
3353 | ||
3354 | /* It's probably best to return the type unchanged. */ | |
3355 | return type; | |
3356 | } | |
3357 | ||
c906108c SS |
3358 | back_to = make_cleanup (null_cleanup, 0); |
3359 | ||
3360 | INIT_CPLUS_SPECIFIC (type); | |
2ae1c2d2 | 3361 | TYPE_CODE (type) = type_code; |
c906108c SS |
3362 | TYPE_FLAGS (type) &= ~TYPE_FLAG_STUB; |
3363 | ||
3364 | /* First comes the total size in bytes. */ | |
3365 | ||
3366 | { | |
3367 | int nbits; | |
3368 | TYPE_LENGTH (type) = read_huge_number (pp, 0, &nbits); | |
3369 | if (nbits != 0) | |
3370 | return error_type (pp, objfile); | |
3371 | } | |
3372 | ||
3373 | /* Now read the baseclasses, if any, read the regular C struct or C++ | |
3374 | class member fields, attach the fields to the type, read the C++ | |
3375 | member functions, attach them to the type, and then read any tilde | |
3376 | field (baseclass specifier for the class holding the main vtable). */ | |
3377 | ||
3378 | if (!read_baseclasses (&fi, pp, type, objfile) | |
3379 | || !read_struct_fields (&fi, pp, type, objfile) | |
3380 | || !attach_fields_to_type (&fi, type, objfile) | |
3381 | || !read_member_functions (&fi, pp, type, objfile) | |
3382 | || !attach_fn_fields_to_type (&fi, type) | |
3383 | || !read_tilde_fields (&fi, pp, type, objfile)) | |
3384 | { | |
3385 | type = error_type (pp, objfile); | |
3386 | } | |
3387 | ||
3388 | do_cleanups (back_to); | |
3389 | return (type); | |
3390 | } | |
3391 | ||
3392 | /* Read a definition of an array type, | |
3393 | and create and return a suitable type object. | |
3394 | Also creates a range type which represents the bounds of that | |
3395 | array. */ | |
3396 | ||
3397 | static struct type * | |
aa1ee363 | 3398 | read_array_type (char **pp, struct type *type, |
fba45db2 | 3399 | struct objfile *objfile) |
c906108c SS |
3400 | { |
3401 | struct type *index_type, *element_type, *range_type; | |
3402 | int lower, upper; | |
3403 | int adjustable = 0; | |
3404 | int nbits; | |
3405 | ||
3406 | /* Format of an array type: | |
3407 | "ar<index type>;lower;upper;<array_contents_type>". | |
3408 | OS9000: "arlower,upper;<array_contents_type>". | |
3409 | ||
3410 | Fortran adjustable arrays use Adigits or Tdigits for lower or upper; | |
3411 | for these, produce a type like float[][]. */ | |
3412 | ||
c906108c SS |
3413 | { |
3414 | index_type = read_type (pp, objfile); | |
3415 | if (**pp != ';') | |
3416 | /* Improper format of array type decl. */ | |
3417 | return error_type (pp, objfile); | |
3418 | ++*pp; | |
3419 | } | |
3420 | ||
3421 | if (!(**pp >= '0' && **pp <= '9') && **pp != '-') | |
3422 | { | |
3423 | (*pp)++; | |
3424 | adjustable = 1; | |
3425 | } | |
cdecafbe | 3426 | lower = read_huge_number (pp, ';', &nbits); |
cdecafbe | 3427 | |
c906108c SS |
3428 | if (nbits != 0) |
3429 | return error_type (pp, objfile); | |
3430 | ||
3431 | if (!(**pp >= '0' && **pp <= '9') && **pp != '-') | |
3432 | { | |
3433 | (*pp)++; | |
3434 | adjustable = 1; | |
3435 | } | |
3436 | upper = read_huge_number (pp, ';', &nbits); | |
3437 | if (nbits != 0) | |
3438 | return error_type (pp, objfile); | |
c5aa993b | 3439 | |
c906108c SS |
3440 | element_type = read_type (pp, objfile); |
3441 | ||
3442 | if (adjustable) | |
3443 | { | |
3444 | lower = 0; | |
3445 | upper = -1; | |
3446 | } | |
3447 | ||
3448 | range_type = | |
3449 | create_range_type ((struct type *) NULL, index_type, lower, upper); | |
3450 | type = create_array_type (type, element_type, range_type); | |
3451 | ||
3452 | return type; | |
3453 | } | |
3454 | ||
3455 | ||
3456 | /* Read a definition of an enumeration type, | |
3457 | and create and return a suitable type object. | |
3458 | Also defines the symbols that represent the values of the type. */ | |
3459 | ||
3460 | static struct type * | |
aa1ee363 | 3461 | read_enum_type (char **pp, struct type *type, |
fba45db2 | 3462 | struct objfile *objfile) |
c906108c | 3463 | { |
52f0bd74 | 3464 | char *p; |
c906108c | 3465 | char *name; |
52f0bd74 AC |
3466 | long n; |
3467 | struct symbol *sym; | |
c906108c SS |
3468 | int nsyms = 0; |
3469 | struct pending **symlist; | |
3470 | struct pending *osyms, *syms; | |
3471 | int o_nsyms; | |
3472 | int nbits; | |
3473 | int unsigned_enum = 1; | |
3474 | ||
3475 | #if 0 | |
3476 | /* FIXME! The stabs produced by Sun CC merrily define things that ought | |
3477 | to be file-scope, between N_FN entries, using N_LSYM. What's a mother | |
3478 | to do? For now, force all enum values to file scope. */ | |
3479 | if (within_function) | |
3480 | symlist = &local_symbols; | |
3481 | else | |
3482 | #endif | |
3483 | symlist = &file_symbols; | |
3484 | osyms = *symlist; | |
3485 | o_nsyms = osyms ? osyms->nsyms : 0; | |
3486 | ||
c906108c SS |
3487 | /* The aix4 compiler emits an extra field before the enum members; |
3488 | my guess is it's a type of some sort. Just ignore it. */ | |
3489 | if (**pp == '-') | |
3490 | { | |
3491 | /* Skip over the type. */ | |
3492 | while (**pp != ':') | |
c5aa993b | 3493 | (*pp)++; |
c906108c SS |
3494 | |
3495 | /* Skip over the colon. */ | |
3496 | (*pp)++; | |
3497 | } | |
3498 | ||
3499 | /* Read the value-names and their values. | |
3500 | The input syntax is NAME:VALUE,NAME:VALUE, and so on. | |
3501 | A semicolon or comma instead of a NAME means the end. */ | |
3502 | while (**pp && **pp != ';' && **pp != ',') | |
3503 | { | |
3504 | STABS_CONTINUE (pp, objfile); | |
3505 | p = *pp; | |
c5aa993b JM |
3506 | while (*p != ':') |
3507 | p++; | |
3508 | name = obsavestring (*pp, p - *pp, &objfile->symbol_obstack); | |
c906108c SS |
3509 | *pp = p + 1; |
3510 | n = read_huge_number (pp, ',', &nbits); | |
3511 | if (nbits != 0) | |
3512 | return error_type (pp, objfile); | |
3513 | ||
3514 | sym = (struct symbol *) | |
c5aa993b | 3515 | obstack_alloc (&objfile->symbol_obstack, sizeof (struct symbol)); |
c906108c | 3516 | memset (sym, 0, sizeof (struct symbol)); |
22abf04a | 3517 | DEPRECATED_SYMBOL_NAME (sym) = name; |
c5aa993b | 3518 | SYMBOL_LANGUAGE (sym) = current_subfile->language; |
c906108c | 3519 | SYMBOL_CLASS (sym) = LOC_CONST; |
176620f1 | 3520 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
3521 | SYMBOL_VALUE (sym) = n; |
3522 | if (n < 0) | |
3523 | unsigned_enum = 0; | |
3524 | add_symbol_to_list (sym, symlist); | |
3525 | nsyms++; | |
3526 | } | |
3527 | ||
3528 | if (**pp == ';') | |
3529 | (*pp)++; /* Skip the semicolon. */ | |
3530 | ||
3531 | /* Now fill in the fields of the type-structure. */ | |
3532 | ||
3533 | TYPE_LENGTH (type) = TARGET_INT_BIT / HOST_CHAR_BIT; | |
3534 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
3535 | TYPE_FLAGS (type) &= ~TYPE_FLAG_STUB; | |
3536 | if (unsigned_enum) | |
3537 | TYPE_FLAGS (type) |= TYPE_FLAG_UNSIGNED; | |
3538 | TYPE_NFIELDS (type) = nsyms; | |
3539 | TYPE_FIELDS (type) = (struct field *) | |
3540 | TYPE_ALLOC (type, sizeof (struct field) * nsyms); | |
3541 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nsyms); | |
3542 | ||
3543 | /* Find the symbols for the values and put them into the type. | |
3544 | The symbols can be found in the symlist that we put them on | |
3545 | to cause them to be defined. osyms contains the old value | |
3546 | of that symlist; everything up to there was defined by us. */ | |
3547 | /* Note that we preserve the order of the enum constants, so | |
3548 | that in something like "enum {FOO, LAST_THING=FOO}" we print | |
3549 | FOO, not LAST_THING. */ | |
3550 | ||
3551 | for (syms = *symlist, n = nsyms - 1; syms; syms = syms->next) | |
3552 | { | |
3553 | int last = syms == osyms ? o_nsyms : 0; | |
3554 | int j = syms->nsyms; | |
3555 | for (; --j >= last; --n) | |
3556 | { | |
3557 | struct symbol *xsym = syms->symbol[j]; | |
3558 | SYMBOL_TYPE (xsym) = type; | |
22abf04a | 3559 | TYPE_FIELD_NAME (type, n) = DEPRECATED_SYMBOL_NAME (xsym); |
c906108c SS |
3560 | TYPE_FIELD_BITPOS (type, n) = SYMBOL_VALUE (xsym); |
3561 | TYPE_FIELD_BITSIZE (type, n) = 0; | |
3562 | } | |
3563 | if (syms == osyms) | |
3564 | break; | |
3565 | } | |
3566 | ||
3567 | return type; | |
3568 | } | |
3569 | ||
3570 | /* Sun's ACC uses a somewhat saner method for specifying the builtin | |
3571 | typedefs in every file (for int, long, etc): | |
3572 | ||
c5aa993b JM |
3573 | type = b <signed> <width> <format type>; <offset>; <nbits> |
3574 | signed = u or s. | |
3575 | optional format type = c or b for char or boolean. | |
3576 | offset = offset from high order bit to start bit of type. | |
3577 | width is # bytes in object of this type, nbits is # bits in type. | |
c906108c SS |
3578 | |
3579 | The width/offset stuff appears to be for small objects stored in | |
3580 | larger ones (e.g. `shorts' in `int' registers). We ignore it for now, | |
3581 | FIXME. */ | |
3582 | ||
3583 | static struct type * | |
35a2f538 | 3584 | read_sun_builtin_type (char **pp, int typenums[2], struct objfile *objfile) |
c906108c SS |
3585 | { |
3586 | int type_bits; | |
3587 | int nbits; | |
3588 | int signed_type; | |
3589 | enum type_code code = TYPE_CODE_INT; | |
3590 | ||
3591 | switch (**pp) | |
3592 | { | |
c5aa993b JM |
3593 | case 's': |
3594 | signed_type = 1; | |
3595 | break; | |
3596 | case 'u': | |
3597 | signed_type = 0; | |
3598 | break; | |
3599 | default: | |
3600 | return error_type (pp, objfile); | |
c906108c SS |
3601 | } |
3602 | (*pp)++; | |
3603 | ||
3604 | /* For some odd reason, all forms of char put a c here. This is strange | |
3605 | because no other type has this honor. We can safely ignore this because | |
3606 | we actually determine 'char'acterness by the number of bits specified in | |
3607 | the descriptor. | |
3608 | Boolean forms, e.g Fortran logical*X, put a b here. */ | |
3609 | ||
3610 | if (**pp == 'c') | |
3611 | (*pp)++; | |
3612 | else if (**pp == 'b') | |
3613 | { | |
3614 | code = TYPE_CODE_BOOL; | |
3615 | (*pp)++; | |
3616 | } | |
3617 | ||
3618 | /* The first number appears to be the number of bytes occupied | |
3619 | by this type, except that unsigned short is 4 instead of 2. | |
3620 | Since this information is redundant with the third number, | |
3621 | we will ignore it. */ | |
3622 | read_huge_number (pp, ';', &nbits); | |
3623 | if (nbits != 0) | |
3624 | return error_type (pp, objfile); | |
3625 | ||
3626 | /* The second number is always 0, so ignore it too. */ | |
3627 | read_huge_number (pp, ';', &nbits); | |
3628 | if (nbits != 0) | |
3629 | return error_type (pp, objfile); | |
3630 | ||
3631 | /* The third number is the number of bits for this type. */ | |
3632 | type_bits = read_huge_number (pp, 0, &nbits); | |
3633 | if (nbits != 0) | |
3634 | return error_type (pp, objfile); | |
3635 | /* The type *should* end with a semicolon. If it are embedded | |
3636 | in a larger type the semicolon may be the only way to know where | |
3637 | the type ends. If this type is at the end of the stabstring we | |
3638 | can deal with the omitted semicolon (but we don't have to like | |
3639 | it). Don't bother to complain(), Sun's compiler omits the semicolon | |
3640 | for "void". */ | |
3641 | if (**pp == ';') | |
3642 | ++(*pp); | |
3643 | ||
3644 | if (type_bits == 0) | |
3645 | return init_type (TYPE_CODE_VOID, 1, | |
c5aa993b | 3646 | signed_type ? 0 : TYPE_FLAG_UNSIGNED, (char *) NULL, |
c906108c SS |
3647 | objfile); |
3648 | else | |
3649 | return init_type (code, | |
3650 | type_bits / TARGET_CHAR_BIT, | |
c5aa993b | 3651 | signed_type ? 0 : TYPE_FLAG_UNSIGNED, (char *) NULL, |
c906108c SS |
3652 | objfile); |
3653 | } | |
3654 | ||
3655 | static struct type * | |
35a2f538 | 3656 | read_sun_floating_type (char **pp, int typenums[2], struct objfile *objfile) |
c906108c SS |
3657 | { |
3658 | int nbits; | |
3659 | int details; | |
3660 | int nbytes; | |
f65ca430 | 3661 | struct type *rettype; |
c906108c SS |
3662 | |
3663 | /* The first number has more details about the type, for example | |
3664 | FN_COMPLEX. */ | |
3665 | details = read_huge_number (pp, ';', &nbits); | |
3666 | if (nbits != 0) | |
3667 | return error_type (pp, objfile); | |
3668 | ||
3669 | /* The second number is the number of bytes occupied by this type */ | |
3670 | nbytes = read_huge_number (pp, ';', &nbits); | |
3671 | if (nbits != 0) | |
3672 | return error_type (pp, objfile); | |
3673 | ||
3674 | if (details == NF_COMPLEX || details == NF_COMPLEX16 | |
3675 | || details == NF_COMPLEX32) | |
f65ca430 DJ |
3676 | { |
3677 | rettype = init_type (TYPE_CODE_COMPLEX, nbytes, 0, NULL, objfile); | |
3678 | TYPE_TARGET_TYPE (rettype) | |
3679 | = init_type (TYPE_CODE_FLT, nbytes / 2, 0, NULL, objfile); | |
3680 | return rettype; | |
3681 | } | |
c906108c SS |
3682 | |
3683 | return init_type (TYPE_CODE_FLT, nbytes, 0, NULL, objfile); | |
3684 | } | |
3685 | ||
3686 | /* Read a number from the string pointed to by *PP. | |
3687 | The value of *PP is advanced over the number. | |
3688 | If END is nonzero, the character that ends the | |
3689 | number must match END, or an error happens; | |
3690 | and that character is skipped if it does match. | |
3691 | If END is zero, *PP is left pointing to that character. | |
3692 | ||
3693 | If the number fits in a long, set *BITS to 0 and return the value. | |
3694 | If not, set *BITS to be the number of bits in the number and return 0. | |
3695 | ||
3696 | If encounter garbage, set *BITS to -1 and return 0. */ | |
3697 | ||
c2d11a7d | 3698 | static long |
fba45db2 | 3699 | read_huge_number (char **pp, int end, int *bits) |
c906108c SS |
3700 | { |
3701 | char *p = *pp; | |
3702 | int sign = 1; | |
c2d11a7d | 3703 | long n = 0; |
c906108c SS |
3704 | int radix = 10; |
3705 | char overflow = 0; | |
3706 | int nbits = 0; | |
3707 | int c; | |
c2d11a7d | 3708 | long upper_limit; |
c5aa993b | 3709 | |
c906108c SS |
3710 | if (*p == '-') |
3711 | { | |
3712 | sign = -1; | |
3713 | p++; | |
3714 | } | |
3715 | ||
3716 | /* Leading zero means octal. GCC uses this to output values larger | |
3717 | than an int (because that would be hard in decimal). */ | |
3718 | if (*p == '0') | |
3719 | { | |
3720 | radix = 8; | |
3721 | p++; | |
3722 | } | |
3723 | ||
1b831c93 | 3724 | upper_limit = LONG_MAX / radix; |
c906108c SS |
3725 | |
3726 | while ((c = *p++) >= '0' && c < ('0' + radix)) | |
3727 | { | |
3728 | if (n <= upper_limit) | |
3729 | { | |
3730 | n *= radix; | |
3731 | n += c - '0'; /* FIXME this overflows anyway */ | |
3732 | } | |
3733 | else | |
3734 | overflow = 1; | |
c5aa993b | 3735 | |
c906108c | 3736 | /* This depends on large values being output in octal, which is |
c5aa993b | 3737 | what GCC does. */ |
c906108c SS |
3738 | if (radix == 8) |
3739 | { | |
3740 | if (nbits == 0) | |
3741 | { | |
3742 | if (c == '0') | |
3743 | /* Ignore leading zeroes. */ | |
3744 | ; | |
3745 | else if (c == '1') | |
3746 | nbits = 1; | |
3747 | else if (c == '2' || c == '3') | |
3748 | nbits = 2; | |
3749 | else | |
3750 | nbits = 3; | |
3751 | } | |
3752 | else | |
3753 | nbits += 3; | |
3754 | } | |
3755 | } | |
3756 | if (end) | |
3757 | { | |
3758 | if (c && c != end) | |
3759 | { | |
3760 | if (bits != NULL) | |
3761 | *bits = -1; | |
3762 | return 0; | |
3763 | } | |
3764 | } | |
3765 | else | |
3766 | --p; | |
3767 | ||
3768 | *pp = p; | |
3769 | if (overflow) | |
3770 | { | |
3771 | if (nbits == 0) | |
3772 | { | |
3773 | /* Large decimal constants are an error (because it is hard to | |
3774 | count how many bits are in them). */ | |
3775 | if (bits != NULL) | |
3776 | *bits = -1; | |
3777 | return 0; | |
3778 | } | |
c5aa993b | 3779 | |
c906108c | 3780 | /* -0x7f is the same as 0x80. So deal with it by adding one to |
c5aa993b | 3781 | the number of bits. */ |
c906108c SS |
3782 | if (sign == -1) |
3783 | ++nbits; | |
3784 | if (bits) | |
3785 | *bits = nbits; | |
3786 | } | |
3787 | else | |
3788 | { | |
3789 | if (bits) | |
3790 | *bits = 0; | |
3791 | return n * sign; | |
3792 | } | |
3793 | /* It's *BITS which has the interesting information. */ | |
3794 | return 0; | |
3795 | } | |
3796 | ||
3797 | static struct type * | |
35a2f538 | 3798 | read_range_type (char **pp, int typenums[2], struct objfile *objfile) |
c906108c SS |
3799 | { |
3800 | char *orig_pp = *pp; | |
3801 | int rangenums[2]; | |
c2d11a7d | 3802 | long n2, n3; |
c906108c SS |
3803 | int n2bits, n3bits; |
3804 | int self_subrange; | |
3805 | struct type *result_type; | |
3806 | struct type *index_type = NULL; | |
3807 | ||
3808 | /* First comes a type we are a subrange of. | |
3809 | In C it is usually 0, 1 or the type being defined. */ | |
3810 | if (read_type_number (pp, rangenums) != 0) | |
3811 | return error_type (pp, objfile); | |
3812 | self_subrange = (rangenums[0] == typenums[0] && | |
3813 | rangenums[1] == typenums[1]); | |
3814 | ||
3815 | if (**pp == '=') | |
3816 | { | |
3817 | *pp = orig_pp; | |
3818 | index_type = read_type (pp, objfile); | |
3819 | } | |
3820 | ||
3821 | /* A semicolon should now follow; skip it. */ | |
3822 | if (**pp == ';') | |
3823 | (*pp)++; | |
3824 | ||
3825 | /* The remaining two operands are usually lower and upper bounds | |
3826 | of the range. But in some special cases they mean something else. */ | |
3827 | n2 = read_huge_number (pp, ';', &n2bits); | |
3828 | n3 = read_huge_number (pp, ';', &n3bits); | |
3829 | ||
3830 | if (n2bits == -1 || n3bits == -1) | |
3831 | return error_type (pp, objfile); | |
3832 | ||
3833 | if (index_type) | |
3834 | goto handle_true_range; | |
3835 | ||
3836 | /* If limits are huge, must be large integral type. */ | |
3837 | if (n2bits != 0 || n3bits != 0) | |
3838 | { | |
3839 | char got_signed = 0; | |
3840 | char got_unsigned = 0; | |
3841 | /* Number of bits in the type. */ | |
3842 | int nbits = 0; | |
3843 | ||
3844 | /* Range from 0 to <large number> is an unsigned large integral type. */ | |
3845 | if ((n2bits == 0 && n2 == 0) && n3bits != 0) | |
3846 | { | |
3847 | got_unsigned = 1; | |
3848 | nbits = n3bits; | |
3849 | } | |
3850 | /* Range from <large number> to <large number>-1 is a large signed | |
c5aa993b JM |
3851 | integral type. Take care of the case where <large number> doesn't |
3852 | fit in a long but <large number>-1 does. */ | |
c906108c SS |
3853 | else if ((n2bits != 0 && n3bits != 0 && n2bits == n3bits + 1) |
3854 | || (n2bits != 0 && n3bits == 0 | |
c2d11a7d JM |
3855 | && (n2bits == sizeof (long) * HOST_CHAR_BIT) |
3856 | && n3 == LONG_MAX)) | |
c906108c SS |
3857 | { |
3858 | got_signed = 1; | |
3859 | nbits = n2bits; | |
3860 | } | |
3861 | ||
3862 | if (got_signed || got_unsigned) | |
3863 | { | |
3864 | return init_type (TYPE_CODE_INT, nbits / TARGET_CHAR_BIT, | |
3865 | got_unsigned ? TYPE_FLAG_UNSIGNED : 0, NULL, | |
3866 | objfile); | |
3867 | } | |
3868 | else | |
3869 | return error_type (pp, objfile); | |
3870 | } | |
3871 | ||
3872 | /* A type defined as a subrange of itself, with bounds both 0, is void. */ | |
3873 | if (self_subrange && n2 == 0 && n3 == 0) | |
3874 | return init_type (TYPE_CODE_VOID, 1, 0, NULL, objfile); | |
3875 | ||
3876 | /* If n3 is zero and n2 is positive, we want a floating type, and n2 | |
3877 | is the width in bytes. | |
3878 | ||
3879 | Fortran programs appear to use this for complex types also. To | |
3880 | distinguish between floats and complex, g77 (and others?) seem | |
3881 | to use self-subranges for the complexes, and subranges of int for | |
3882 | the floats. | |
3883 | ||
3884 | Also note that for complexes, g77 sets n2 to the size of one of | |
3885 | the member floats, not the whole complex beast. My guess is that | |
3886 | this was to work well with pre-COMPLEX versions of gdb. */ | |
3887 | ||
3888 | if (n3 == 0 && n2 > 0) | |
3889 | { | |
1300f5dd JB |
3890 | struct type *float_type |
3891 | = init_type (TYPE_CODE_FLT, n2, 0, NULL, objfile); | |
3892 | ||
c906108c SS |
3893 | if (self_subrange) |
3894 | { | |
1300f5dd JB |
3895 | struct type *complex_type = |
3896 | init_type (TYPE_CODE_COMPLEX, 2 * n2, 0, NULL, objfile); | |
3897 | TYPE_TARGET_TYPE (complex_type) = float_type; | |
3898 | return complex_type; | |
c906108c SS |
3899 | } |
3900 | else | |
1300f5dd | 3901 | return float_type; |
c906108c SS |
3902 | } |
3903 | ||
3904 | /* If the upper bound is -1, it must really be an unsigned int. */ | |
3905 | ||
3906 | else if (n2 == 0 && n3 == -1) | |
3907 | { | |
3908 | /* It is unsigned int or unsigned long. */ | |
3909 | /* GCC 2.3.3 uses this for long long too, but that is just a GDB 3.5 | |
c5aa993b | 3910 | compatibility hack. */ |
c906108c SS |
3911 | return init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT, |
3912 | TYPE_FLAG_UNSIGNED, NULL, objfile); | |
3913 | } | |
3914 | ||
3915 | /* Special case: char is defined (Who knows why) as a subrange of | |
3916 | itself with range 0-127. */ | |
3917 | else if (self_subrange && n2 == 0 && n3 == 127) | |
973ccf8b | 3918 | return init_type (TYPE_CODE_INT, 1, TYPE_FLAG_NOSIGN, NULL, objfile); |
c906108c | 3919 | |
c906108c SS |
3920 | /* We used to do this only for subrange of self or subrange of int. */ |
3921 | else if (n2 == 0) | |
3922 | { | |
a0b3c4fd JM |
3923 | /* -1 is used for the upper bound of (4 byte) "unsigned int" and |
3924 | "unsigned long", and we already checked for that, | |
3925 | so don't need to test for it here. */ | |
3926 | ||
c906108c SS |
3927 | if (n3 < 0) |
3928 | /* n3 actually gives the size. */ | |
c5aa993b | 3929 | return init_type (TYPE_CODE_INT, -n3, TYPE_FLAG_UNSIGNED, |
c906108c | 3930 | NULL, objfile); |
c906108c | 3931 | |
7be570e7 | 3932 | /* Is n3 == 2**(8n)-1 for some integer n? Then it's an |
a0b3c4fd JM |
3933 | unsigned n-byte integer. But do require n to be a power of |
3934 | two; we don't want 3- and 5-byte integers flying around. */ | |
3935 | { | |
3936 | int bytes; | |
3937 | unsigned long bits; | |
3938 | ||
3939 | bits = n3; | |
3940 | for (bytes = 0; (bits & 0xff) == 0xff; bytes++) | |
3941 | bits >>= 8; | |
3942 | if (bits == 0 | |
3943 | && ((bytes - 1) & bytes) == 0) /* "bytes is a power of two" */ | |
3944 | return init_type (TYPE_CODE_INT, bytes, TYPE_FLAG_UNSIGNED, NULL, | |
3945 | objfile); | |
3946 | } | |
c906108c SS |
3947 | } |
3948 | /* I think this is for Convex "long long". Since I don't know whether | |
3949 | Convex sets self_subrange, I also accept that particular size regardless | |
3950 | of self_subrange. */ | |
3951 | else if (n3 == 0 && n2 < 0 | |
3952 | && (self_subrange | |
c5aa993b JM |
3953 | || n2 == -TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT)) |
3954 | return init_type (TYPE_CODE_INT, -n2, 0, NULL, objfile); | |
3955 | else if (n2 == -n3 - 1) | |
c906108c SS |
3956 | { |
3957 | if (n3 == 0x7f) | |
3958 | return init_type (TYPE_CODE_INT, 1, 0, NULL, objfile); | |
3959 | if (n3 == 0x7fff) | |
3960 | return init_type (TYPE_CODE_INT, 2, 0, NULL, objfile); | |
3961 | if (n3 == 0x7fffffff) | |
3962 | return init_type (TYPE_CODE_INT, 4, 0, NULL, objfile); | |
3963 | } | |
3964 | ||
3965 | /* We have a real range type on our hands. Allocate space and | |
3966 | return a real pointer. */ | |
c5aa993b | 3967 | handle_true_range: |
c906108c SS |
3968 | |
3969 | if (self_subrange) | |
3970 | index_type = builtin_type_int; | |
3971 | else | |
3972 | index_type = *dbx_lookup_type (rangenums); | |
3973 | if (index_type == NULL) | |
3974 | { | |
3975 | /* Does this actually ever happen? Is that why we are worrying | |
3976 | about dealing with it rather than just calling error_type? */ | |
3977 | ||
3978 | static struct type *range_type_index; | |
3979 | ||
23136709 KB |
3980 | complaint (&symfile_complaints, |
3981 | "base type %d of range type is not defined", rangenums[1]); | |
c906108c SS |
3982 | if (range_type_index == NULL) |
3983 | range_type_index = | |
3984 | init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT, | |
3985 | 0, "range type index type", NULL); | |
3986 | index_type = range_type_index; | |
3987 | } | |
3988 | ||
3989 | result_type = create_range_type ((struct type *) NULL, index_type, n2, n3); | |
3990 | return (result_type); | |
3991 | } | |
3992 | ||
3993 | /* Read in an argument list. This is a list of types, separated by commas | |
3994 | and terminated with END. Return the list of types read in, or (struct type | |
3995 | **)-1 if there is an error. */ | |
3996 | ||
ad2f7632 DJ |
3997 | static struct field * |
3998 | read_args (char **pp, int end, struct objfile *objfile, int *nargsp, | |
3999 | int *varargsp) | |
c906108c SS |
4000 | { |
4001 | /* FIXME! Remove this arbitrary limit! */ | |
ad2f7632 DJ |
4002 | struct type *types[1024]; /* allow for fns of 1023 parameters */ |
4003 | int n = 0, i; | |
4004 | struct field *rval; | |
c906108c SS |
4005 | |
4006 | while (**pp != end) | |
4007 | { | |
4008 | if (**pp != ',') | |
4009 | /* Invalid argument list: no ','. */ | |
ad2f7632 | 4010 | return (struct field *) -1; |
c906108c SS |
4011 | (*pp)++; |
4012 | STABS_CONTINUE (pp, objfile); | |
4013 | types[n++] = read_type (pp, objfile); | |
4014 | } | |
4015 | (*pp)++; /* get past `end' (the ':' character) */ | |
4016 | ||
ad2f7632 DJ |
4017 | if (TYPE_CODE (types[n - 1]) != TYPE_CODE_VOID) |
4018 | *varargsp = 1; | |
c906108c SS |
4019 | else |
4020 | { | |
ad2f7632 DJ |
4021 | n--; |
4022 | *varargsp = 0; | |
c906108c | 4023 | } |
ad2f7632 DJ |
4024 | |
4025 | rval = (struct field *) xmalloc (n * sizeof (struct field)); | |
4026 | memset (rval, 0, n * sizeof (struct field)); | |
4027 | for (i = 0; i < n; i++) | |
4028 | rval[i].type = types[i]; | |
4029 | *nargsp = n; | |
c906108c SS |
4030 | return rval; |
4031 | } | |
4032 | \f | |
4033 | /* Common block handling. */ | |
4034 | ||
4035 | /* List of symbols declared since the last BCOMM. This list is a tail | |
4036 | of local_symbols. When ECOMM is seen, the symbols on the list | |
4037 | are noted so their proper addresses can be filled in later, | |
4038 | using the common block base address gotten from the assembler | |
4039 | stabs. */ | |
4040 | ||
4041 | static struct pending *common_block; | |
4042 | static int common_block_i; | |
4043 | ||
4044 | /* Name of the current common block. We get it from the BCOMM instead of the | |
4045 | ECOMM to match IBM documentation (even though IBM puts the name both places | |
4046 | like everyone else). */ | |
4047 | static char *common_block_name; | |
4048 | ||
4049 | /* Process a N_BCOMM symbol. The storage for NAME is not guaranteed | |
4050 | to remain after this function returns. */ | |
4051 | ||
4052 | void | |
fba45db2 | 4053 | common_block_start (char *name, struct objfile *objfile) |
c906108c SS |
4054 | { |
4055 | if (common_block_name != NULL) | |
4056 | { | |
23136709 KB |
4057 | complaint (&symfile_complaints, |
4058 | "Invalid symbol data: common block within common block"); | |
c906108c SS |
4059 | } |
4060 | common_block = local_symbols; | |
4061 | common_block_i = local_symbols ? local_symbols->nsyms : 0; | |
4062 | common_block_name = obsavestring (name, strlen (name), | |
c5aa993b | 4063 | &objfile->symbol_obstack); |
c906108c SS |
4064 | } |
4065 | ||
4066 | /* Process a N_ECOMM symbol. */ | |
4067 | ||
4068 | void | |
fba45db2 | 4069 | common_block_end (struct objfile *objfile) |
c906108c SS |
4070 | { |
4071 | /* Symbols declared since the BCOMM are to have the common block | |
4072 | start address added in when we know it. common_block and | |
4073 | common_block_i point to the first symbol after the BCOMM in | |
4074 | the local_symbols list; copy the list and hang it off the | |
4075 | symbol for the common block name for later fixup. */ | |
4076 | int i; | |
4077 | struct symbol *sym; | |
4078 | struct pending *new = 0; | |
4079 | struct pending *next; | |
4080 | int j; | |
4081 | ||
4082 | if (common_block_name == NULL) | |
4083 | { | |
23136709 | 4084 | complaint (&symfile_complaints, "ECOMM symbol unmatched by BCOMM"); |
c906108c SS |
4085 | return; |
4086 | } | |
4087 | ||
c5aa993b JM |
4088 | sym = (struct symbol *) |
4089 | obstack_alloc (&objfile->symbol_obstack, sizeof (struct symbol)); | |
c906108c SS |
4090 | memset (sym, 0, sizeof (struct symbol)); |
4091 | /* Note: common_block_name already saved on symbol_obstack */ | |
22abf04a | 4092 | DEPRECATED_SYMBOL_NAME (sym) = common_block_name; |
c906108c SS |
4093 | SYMBOL_CLASS (sym) = LOC_BLOCK; |
4094 | ||
4095 | /* Now we copy all the symbols which have been defined since the BCOMM. */ | |
4096 | ||
4097 | /* Copy all the struct pendings before common_block. */ | |
4098 | for (next = local_symbols; | |
4099 | next != NULL && next != common_block; | |
4100 | next = next->next) | |
4101 | { | |
4102 | for (j = 0; j < next->nsyms; j++) | |
4103 | add_symbol_to_list (next->symbol[j], &new); | |
4104 | } | |
4105 | ||
4106 | /* Copy however much of COMMON_BLOCK we need. If COMMON_BLOCK is | |
4107 | NULL, it means copy all the local symbols (which we already did | |
4108 | above). */ | |
4109 | ||
4110 | if (common_block != NULL) | |
4111 | for (j = common_block_i; j < common_block->nsyms; j++) | |
4112 | add_symbol_to_list (common_block->symbol[j], &new); | |
4113 | ||
4114 | SYMBOL_TYPE (sym) = (struct type *) new; | |
4115 | ||
4116 | /* Should we be putting local_symbols back to what it was? | |
4117 | Does it matter? */ | |
4118 | ||
22abf04a | 4119 | i = hashname (DEPRECATED_SYMBOL_NAME (sym)); |
c906108c SS |
4120 | SYMBOL_VALUE_CHAIN (sym) = global_sym_chain[i]; |
4121 | global_sym_chain[i] = sym; | |
4122 | common_block_name = NULL; | |
4123 | } | |
4124 | ||
4125 | /* Add a common block's start address to the offset of each symbol | |
4126 | declared to be in it (by being between a BCOMM/ECOMM pair that uses | |
4127 | the common block name). */ | |
4128 | ||
4129 | static void | |
fba45db2 | 4130 | fix_common_block (struct symbol *sym, int valu) |
c906108c SS |
4131 | { |
4132 | struct pending *next = (struct pending *) SYMBOL_TYPE (sym); | |
c5aa993b | 4133 | for (; next; next = next->next) |
c906108c | 4134 | { |
aa1ee363 | 4135 | int j; |
c906108c SS |
4136 | for (j = next->nsyms - 1; j >= 0; j--) |
4137 | SYMBOL_VALUE_ADDRESS (next->symbol[j]) += valu; | |
4138 | } | |
4139 | } | |
c5aa993b | 4140 | \f |
c906108c SS |
4141 | |
4142 | ||
c906108c SS |
4143 | /* What about types defined as forward references inside of a small lexical |
4144 | scope? */ | |
4145 | /* Add a type to the list of undefined types to be checked through | |
4146 | once this file has been read in. */ | |
4147 | ||
a7a48797 | 4148 | static void |
fba45db2 | 4149 | add_undefined_type (struct type *type) |
c906108c SS |
4150 | { |
4151 | if (undef_types_length == undef_types_allocated) | |
4152 | { | |
4153 | undef_types_allocated *= 2; | |
4154 | undef_types = (struct type **) | |
4155 | xrealloc ((char *) undef_types, | |
4156 | undef_types_allocated * sizeof (struct type *)); | |
4157 | } | |
4158 | undef_types[undef_types_length++] = type; | |
4159 | } | |
4160 | ||
4161 | /* Go through each undefined type, see if it's still undefined, and fix it | |
4162 | up if possible. We have two kinds of undefined types: | |
4163 | ||
4164 | TYPE_CODE_ARRAY: Array whose target type wasn't defined yet. | |
c5aa993b JM |
4165 | Fix: update array length using the element bounds |
4166 | and the target type's length. | |
c906108c | 4167 | TYPE_CODE_STRUCT, TYPE_CODE_UNION: Structure whose fields were not |
c5aa993b JM |
4168 | yet defined at the time a pointer to it was made. |
4169 | Fix: Do a full lookup on the struct/union tag. */ | |
c906108c | 4170 | void |
fba45db2 | 4171 | cleanup_undefined_types (void) |
c906108c SS |
4172 | { |
4173 | struct type **type; | |
4174 | ||
4175 | for (type = undef_types; type < undef_types + undef_types_length; type++) | |
4176 | { | |
4177 | switch (TYPE_CODE (*type)) | |
4178 | { | |
4179 | ||
c5aa993b JM |
4180 | case TYPE_CODE_STRUCT: |
4181 | case TYPE_CODE_UNION: | |
4182 | case TYPE_CODE_ENUM: | |
c906108c SS |
4183 | { |
4184 | /* Check if it has been defined since. Need to do this here | |
4185 | as well as in check_typedef to deal with the (legitimate in | |
4186 | C though not C++) case of several types with the same name | |
4187 | in different source files. */ | |
74a9bb82 | 4188 | if (TYPE_STUB (*type)) |
c906108c SS |
4189 | { |
4190 | struct pending *ppt; | |
4191 | int i; | |
4192 | /* Name of the type, without "struct" or "union" */ | |
4193 | char *typename = TYPE_TAG_NAME (*type); | |
4194 | ||
4195 | if (typename == NULL) | |
4196 | { | |
23136709 | 4197 | complaint (&symfile_complaints, "need a type name"); |
c906108c SS |
4198 | break; |
4199 | } | |
4200 | for (ppt = file_symbols; ppt; ppt = ppt->next) | |
4201 | { | |
4202 | for (i = 0; i < ppt->nsyms; i++) | |
4203 | { | |
4204 | struct symbol *sym = ppt->symbol[i]; | |
c5aa993b | 4205 | |
c906108c | 4206 | if (SYMBOL_CLASS (sym) == LOC_TYPEDEF |
176620f1 | 4207 | && SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN |
c906108c SS |
4208 | && (TYPE_CODE (SYMBOL_TYPE (sym)) == |
4209 | TYPE_CODE (*type)) | |
22abf04a | 4210 | && STREQ (DEPRECATED_SYMBOL_NAME (sym), typename)) |
13a393b0 | 4211 | replace_type (*type, SYMBOL_TYPE (sym)); |
c906108c SS |
4212 | } |
4213 | } | |
4214 | } | |
4215 | } | |
4216 | break; | |
4217 | ||
4218 | default: | |
4219 | { | |
23136709 KB |
4220 | complaint (&symfile_complaints, |
4221 | "GDB internal error. cleanup_undefined_types with bad type %d.", | |
4222 | TYPE_CODE (*type)); | |
c906108c SS |
4223 | } |
4224 | break; | |
4225 | } | |
4226 | } | |
4227 | ||
4228 | undef_types_length = 0; | |
4229 | } | |
4230 | ||
4231 | /* Scan through all of the global symbols defined in the object file, | |
4232 | assigning values to the debugging symbols that need to be assigned | |
4233 | to. Get these symbols from the minimal symbol table. */ | |
4234 | ||
4235 | void | |
fba45db2 | 4236 | scan_file_globals (struct objfile *objfile) |
c906108c SS |
4237 | { |
4238 | int hash; | |
4239 | struct minimal_symbol *msymbol; | |
507836c0 | 4240 | struct symbol *sym, *prev; |
c906108c SS |
4241 | struct objfile *resolve_objfile; |
4242 | ||
4243 | /* SVR4 based linkers copy referenced global symbols from shared | |
4244 | libraries to the main executable. | |
4245 | If we are scanning the symbols for a shared library, try to resolve | |
4246 | them from the minimal symbols of the main executable first. */ | |
4247 | ||
4248 | if (symfile_objfile && objfile != symfile_objfile) | |
4249 | resolve_objfile = symfile_objfile; | |
4250 | else | |
4251 | resolve_objfile = objfile; | |
4252 | ||
4253 | while (1) | |
4254 | { | |
4255 | /* Avoid expensive loop through all minimal symbols if there are | |
c5aa993b | 4256 | no unresolved symbols. */ |
c906108c SS |
4257 | for (hash = 0; hash < HASHSIZE; hash++) |
4258 | { | |
4259 | if (global_sym_chain[hash]) | |
4260 | break; | |
4261 | } | |
4262 | if (hash >= HASHSIZE) | |
4263 | return; | |
4264 | ||
c5aa993b | 4265 | for (msymbol = resolve_objfile->msymbols; |
22abf04a | 4266 | msymbol && DEPRECATED_SYMBOL_NAME (msymbol) != NULL; |
c906108c SS |
4267 | msymbol++) |
4268 | { | |
4269 | QUIT; | |
4270 | ||
4271 | /* Skip static symbols. */ | |
4272 | switch (MSYMBOL_TYPE (msymbol)) | |
4273 | { | |
4274 | case mst_file_text: | |
4275 | case mst_file_data: | |
4276 | case mst_file_bss: | |
4277 | continue; | |
4278 | default: | |
4279 | break; | |
4280 | } | |
4281 | ||
4282 | prev = NULL; | |
4283 | ||
4284 | /* Get the hash index and check all the symbols | |
4285 | under that hash index. */ | |
4286 | ||
22abf04a | 4287 | hash = hashname (DEPRECATED_SYMBOL_NAME (msymbol)); |
c906108c SS |
4288 | |
4289 | for (sym = global_sym_chain[hash]; sym;) | |
4290 | { | |
22abf04a DC |
4291 | if (DEPRECATED_SYMBOL_NAME (msymbol)[0] == DEPRECATED_SYMBOL_NAME (sym)[0] && |
4292 | STREQ (DEPRECATED_SYMBOL_NAME (msymbol) + 1, DEPRECATED_SYMBOL_NAME (sym) + 1)) | |
c906108c | 4293 | { |
c906108c SS |
4294 | /* Splice this symbol out of the hash chain and |
4295 | assign the value we have to it. */ | |
4296 | if (prev) | |
4297 | { | |
4298 | SYMBOL_VALUE_CHAIN (prev) = SYMBOL_VALUE_CHAIN (sym); | |
4299 | } | |
4300 | else | |
4301 | { | |
4302 | global_sym_chain[hash] = SYMBOL_VALUE_CHAIN (sym); | |
4303 | } | |
c5aa993b | 4304 | |
c906108c SS |
4305 | /* Check to see whether we need to fix up a common block. */ |
4306 | /* Note: this code might be executed several times for | |
4307 | the same symbol if there are multiple references. */ | |
507836c0 | 4308 | if (sym) |
c906108c | 4309 | { |
507836c0 | 4310 | if (SYMBOL_CLASS (sym) == LOC_BLOCK) |
c906108c | 4311 | { |
507836c0 | 4312 | fix_common_block (sym, |
c906108c SS |
4313 | SYMBOL_VALUE_ADDRESS (msymbol)); |
4314 | } | |
4315 | else | |
4316 | { | |
507836c0 | 4317 | SYMBOL_VALUE_ADDRESS (sym) |
c906108c SS |
4318 | = SYMBOL_VALUE_ADDRESS (msymbol); |
4319 | } | |
507836c0 | 4320 | SYMBOL_SECTION (sym) = SYMBOL_SECTION (msymbol); |
c906108c SS |
4321 | } |
4322 | ||
c906108c SS |
4323 | if (prev) |
4324 | { | |
4325 | sym = SYMBOL_VALUE_CHAIN (prev); | |
4326 | } | |
4327 | else | |
4328 | { | |
4329 | sym = global_sym_chain[hash]; | |
4330 | } | |
4331 | } | |
4332 | else | |
4333 | { | |
4334 | prev = sym; | |
4335 | sym = SYMBOL_VALUE_CHAIN (sym); | |
4336 | } | |
4337 | } | |
4338 | } | |
4339 | if (resolve_objfile == objfile) | |
4340 | break; | |
4341 | resolve_objfile = objfile; | |
4342 | } | |
4343 | ||
4344 | /* Change the storage class of any remaining unresolved globals to | |
4345 | LOC_UNRESOLVED and remove them from the chain. */ | |
4346 | for (hash = 0; hash < HASHSIZE; hash++) | |
4347 | { | |
4348 | sym = global_sym_chain[hash]; | |
4349 | while (sym) | |
4350 | { | |
4351 | prev = sym; | |
4352 | sym = SYMBOL_VALUE_CHAIN (sym); | |
4353 | ||
4354 | /* Change the symbol address from the misleading chain value | |
4355 | to address zero. */ | |
4356 | SYMBOL_VALUE_ADDRESS (prev) = 0; | |
4357 | ||
4358 | /* Complain about unresolved common block symbols. */ | |
4359 | if (SYMBOL_CLASS (prev) == LOC_STATIC) | |
4360 | SYMBOL_CLASS (prev) = LOC_UNRESOLVED; | |
4361 | else | |
23136709 KB |
4362 | complaint (&symfile_complaints, |
4363 | "%s: common block `%s' from global_sym_chain unresolved", | |
22abf04a | 4364 | objfile->name, DEPRECATED_SYMBOL_NAME (prev)); |
c906108c SS |
4365 | } |
4366 | } | |
4367 | memset (global_sym_chain, 0, sizeof (global_sym_chain)); | |
4368 | } | |
4369 | ||
4370 | /* Initialize anything that needs initializing when starting to read | |
4371 | a fresh piece of a symbol file, e.g. reading in the stuff corresponding | |
4372 | to a psymtab. */ | |
4373 | ||
4374 | void | |
fba45db2 | 4375 | stabsread_init (void) |
c906108c SS |
4376 | { |
4377 | } | |
4378 | ||
4379 | /* Initialize anything that needs initializing when a completely new | |
4380 | symbol file is specified (not just adding some symbols from another | |
4381 | file, e.g. a shared library). */ | |
4382 | ||
4383 | void | |
fba45db2 | 4384 | stabsread_new_init (void) |
c906108c SS |
4385 | { |
4386 | /* Empty the hash table of global syms looking for values. */ | |
4387 | memset (global_sym_chain, 0, sizeof (global_sym_chain)); | |
4388 | } | |
4389 | ||
4390 | /* Initialize anything that needs initializing at the same time as | |
4391 | start_symtab() is called. */ | |
4392 | ||
c5aa993b | 4393 | void |
fba45db2 | 4394 | start_stabs (void) |
c906108c SS |
4395 | { |
4396 | global_stabs = NULL; /* AIX COFF */ | |
4397 | /* Leave FILENUM of 0 free for builtin types and this file's types. */ | |
4398 | n_this_object_header_files = 1; | |
4399 | type_vector_length = 0; | |
4400 | type_vector = (struct type **) 0; | |
4401 | ||
4402 | /* FIXME: If common_block_name is not already NULL, we should complain(). */ | |
4403 | common_block_name = NULL; | |
c906108c SS |
4404 | } |
4405 | ||
4406 | /* Call after end_symtab() */ | |
4407 | ||
c5aa993b | 4408 | void |
fba45db2 | 4409 | end_stabs (void) |
c906108c SS |
4410 | { |
4411 | if (type_vector) | |
4412 | { | |
b8c9b27d | 4413 | xfree (type_vector); |
c906108c SS |
4414 | } |
4415 | type_vector = 0; | |
4416 | type_vector_length = 0; | |
4417 | previous_stab_code = 0; | |
4418 | } | |
4419 | ||
4420 | void | |
fba45db2 | 4421 | finish_global_stabs (struct objfile *objfile) |
c906108c SS |
4422 | { |
4423 | if (global_stabs) | |
4424 | { | |
4425 | patch_block_stabs (global_symbols, global_stabs, objfile); | |
b8c9b27d | 4426 | xfree (global_stabs); |
c906108c SS |
4427 | global_stabs = NULL; |
4428 | } | |
4429 | } | |
4430 | ||
7e1d63ec AF |
4431 | /* Find the end of the name, delimited by a ':', but don't match |
4432 | ObjC symbols which look like -[Foo bar::]:bla. */ | |
4433 | static char * | |
4434 | find_name_end (char *name) | |
4435 | { | |
4436 | char *s = name; | |
4437 | if (s[0] == '-' || *s == '+') | |
4438 | { | |
4439 | /* Must be an ObjC method symbol. */ | |
4440 | if (s[1] != '[') | |
4441 | { | |
4442 | error ("invalid symbol name \"%s\"", name); | |
4443 | } | |
4444 | s = strchr (s, ']'); | |
4445 | if (s == NULL) | |
4446 | { | |
4447 | error ("invalid symbol name \"%s\"", name); | |
4448 | } | |
4449 | return strchr (s, ':'); | |
4450 | } | |
4451 | else | |
4452 | { | |
4453 | return strchr (s, ':'); | |
4454 | } | |
4455 | } | |
4456 | ||
c906108c SS |
4457 | /* Initializer for this module */ |
4458 | ||
4459 | void | |
fba45db2 | 4460 | _initialize_stabsread (void) |
c906108c SS |
4461 | { |
4462 | undef_types_allocated = 20; | |
4463 | undef_types_length = 0; | |
4464 | undef_types = (struct type **) | |
4465 | xmalloc (undef_types_allocated * sizeof (struct type *)); | |
4466 | } |