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 | |
192cb3d4 | 1121 | && gdbarch_stabs_argument_has_addr (current_gdbarch, |
5439edaa | 1122 | SYMBOL_TYPE (sym))) |
c906108c SS |
1123 | { |
1124 | struct symbol *prev_sym; | |
1125 | prev_sym = local_symbols->symbol[local_symbols->nsyms - 1]; | |
1126 | if ((SYMBOL_CLASS (prev_sym) == LOC_REF_ARG | |
1127 | || SYMBOL_CLASS (prev_sym) == LOC_ARG) | |
6314a349 AC |
1128 | && strcmp (DEPRECATED_SYMBOL_NAME (prev_sym), |
1129 | DEPRECATED_SYMBOL_NAME (sym)) == 0) | |
c906108c SS |
1130 | { |
1131 | SYMBOL_CLASS (prev_sym) = LOC_REGPARM; | |
1132 | /* Use the type from the LOC_REGISTER; that is the type | |
1133 | that is actually in that register. */ | |
1134 | SYMBOL_TYPE (prev_sym) = SYMBOL_TYPE (sym); | |
1135 | SYMBOL_VALUE (prev_sym) = SYMBOL_VALUE (sym); | |
1136 | sym = prev_sym; | |
1137 | break; | |
1138 | } | |
1139 | } | |
c5aa993b | 1140 | add_symbol_to_list (sym, &local_symbols); |
c906108c SS |
1141 | } |
1142 | else | |
c5aa993b | 1143 | add_symbol_to_list (sym, &file_symbols); |
c906108c SS |
1144 | break; |
1145 | ||
1146 | case 'S': | |
1147 | /* Static symbol at top level of file */ | |
1148 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
1149 | SYMBOL_CLASS (sym) = LOC_STATIC; | |
1150 | SYMBOL_VALUE_ADDRESS (sym) = valu; | |
1151 | #ifdef STATIC_TRANSFORM_NAME | |
22abf04a | 1152 | if (IS_STATIC_TRANSFORM_NAME (DEPRECATED_SYMBOL_NAME (sym))) |
c5aa993b JM |
1153 | { |
1154 | struct minimal_symbol *msym; | |
22abf04a | 1155 | msym = lookup_minimal_symbol (DEPRECATED_SYMBOL_NAME (sym), NULL, objfile); |
c5aa993b JM |
1156 | if (msym != NULL) |
1157 | { | |
22abf04a | 1158 | DEPRECATED_SYMBOL_NAME (sym) = STATIC_TRANSFORM_NAME (DEPRECATED_SYMBOL_NAME (sym)); |
c5aa993b JM |
1159 | SYMBOL_VALUE_ADDRESS (sym) = SYMBOL_VALUE_ADDRESS (msym); |
1160 | } | |
1161 | } | |
c906108c | 1162 | #endif |
176620f1 | 1163 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1164 | add_symbol_to_list (sym, &file_symbols); |
1165 | break; | |
1166 | ||
1167 | case 't': | |
e2cd42dd | 1168 | /* Typedef */ |
c906108c SS |
1169 | SYMBOL_TYPE (sym) = read_type (&p, objfile); |
1170 | ||
1171 | /* For a nameless type, we don't want a create a symbol, thus we | |
c5aa993b JM |
1172 | did not use `sym'. Return without further processing. */ |
1173 | if (nameless) | |
1174 | return NULL; | |
c906108c SS |
1175 | |
1176 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
1177 | SYMBOL_VALUE (sym) = valu; | |
176620f1 | 1178 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c | 1179 | /* C++ vagaries: we may have a type which is derived from |
c5aa993b JM |
1180 | a base type which did not have its name defined when the |
1181 | derived class was output. We fill in the derived class's | |
1182 | base part member's name here in that case. */ | |
c906108c SS |
1183 | if (TYPE_NAME (SYMBOL_TYPE (sym)) != NULL) |
1184 | if ((TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_STRUCT | |
1185 | || TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_UNION) | |
1186 | && TYPE_N_BASECLASSES (SYMBOL_TYPE (sym))) | |
1187 | { | |
1188 | int j; | |
1189 | for (j = TYPE_N_BASECLASSES (SYMBOL_TYPE (sym)) - 1; j >= 0; j--) | |
1190 | if (TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym), j) == 0) | |
1191 | TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym), j) = | |
1192 | type_name_no_tag (TYPE_BASECLASS (SYMBOL_TYPE (sym), j)); | |
1193 | } | |
1194 | ||
1195 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == NULL) | |
1196 | { | |
1197 | /* gcc-2.6 or later (when using -fvtable-thunks) | |
1198 | emits a unique named type for a vtable entry. | |
1199 | Some gdb code depends on that specific name. */ | |
1200 | extern const char vtbl_ptr_name[]; | |
1201 | ||
1202 | if ((TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_PTR | |
22abf04a | 1203 | && strcmp (DEPRECATED_SYMBOL_NAME (sym), vtbl_ptr_name)) |
c906108c SS |
1204 | || TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_FUNC) |
1205 | { | |
1206 | /* If we are giving a name to a type such as "pointer to | |
c5aa993b JM |
1207 | foo" or "function returning foo", we better not set |
1208 | the TYPE_NAME. If the program contains "typedef char | |
1209 | *caddr_t;", we don't want all variables of type char | |
1210 | * to print as caddr_t. This is not just a | |
1211 | consequence of GDB's type management; PCC and GCC (at | |
1212 | least through version 2.4) both output variables of | |
1213 | either type char * or caddr_t with the type number | |
1214 | defined in the 't' symbol for caddr_t. If a future | |
1215 | compiler cleans this up it GDB is not ready for it | |
1216 | yet, but if it becomes ready we somehow need to | |
1217 | disable this check (without breaking the PCC/GCC2.4 | |
1218 | case). | |
1219 | ||
1220 | Sigh. | |
1221 | ||
1222 | Fortunately, this check seems not to be necessary | |
1223 | for anything except pointers or functions. */ | |
49d97c60 EZ |
1224 | /* ezannoni: 2000-10-26. This seems to apply for |
1225 | versions of gcc older than 2.8. This was the original | |
1226 | problem: with the following code gdb would tell that | |
1227 | the type for name1 is caddr_t, and func is char() | |
1228 | typedef char *caddr_t; | |
1229 | char *name2; | |
1230 | struct x | |
1231 | { | |
1232 | char *name1; | |
1233 | } xx; | |
1234 | char *func() | |
1235 | { | |
1236 | } | |
1237 | main () {} | |
1238 | */ | |
1239 | ||
1240 | /* Pascal accepts names for pointer types. */ | |
1241 | if (current_subfile->language == language_pascal) | |
1242 | { | |
22abf04a | 1243 | TYPE_NAME (SYMBOL_TYPE (sym)) = DEPRECATED_SYMBOL_NAME (sym); |
49d97c60 | 1244 | } |
c906108c SS |
1245 | } |
1246 | else | |
22abf04a | 1247 | TYPE_NAME (SYMBOL_TYPE (sym)) = DEPRECATED_SYMBOL_NAME (sym); |
c906108c SS |
1248 | } |
1249 | ||
1250 | add_symbol_to_list (sym, &file_symbols); | |
1251 | break; | |
1252 | ||
1253 | case 'T': | |
1254 | /* Struct, union, or enum tag. For GNU C++, this can be be followed | |
c5aa993b | 1255 | by 't' which means we are typedef'ing it as well. */ |
c906108c SS |
1256 | synonym = *p == 't'; |
1257 | ||
1258 | if (synonym) | |
1259 | p++; | |
c906108c SS |
1260 | |
1261 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
25caa7a8 | 1262 | |
c906108c | 1263 | /* For a nameless type, we don't want a create a symbol, thus we |
c5aa993b JM |
1264 | did not use `sym'. Return without further processing. */ |
1265 | if (nameless) | |
1266 | return NULL; | |
c906108c SS |
1267 | |
1268 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
1269 | SYMBOL_VALUE (sym) = valu; | |
176620f1 | 1270 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c SS |
1271 | if (TYPE_TAG_NAME (SYMBOL_TYPE (sym)) == 0) |
1272 | TYPE_TAG_NAME (SYMBOL_TYPE (sym)) | |
22abf04a | 1273 | = obconcat (&objfile->type_obstack, "", "", DEPRECATED_SYMBOL_NAME (sym)); |
c906108c SS |
1274 | add_symbol_to_list (sym, &file_symbols); |
1275 | ||
1276 | if (synonym) | |
1277 | { | |
1278 | /* Clone the sym and then modify it. */ | |
aa1ee363 | 1279 | struct symbol *typedef_sym = (struct symbol *) |
c5aa993b | 1280 | obstack_alloc (&objfile->symbol_obstack, sizeof (struct symbol)); |
c906108c SS |
1281 | *typedef_sym = *sym; |
1282 | SYMBOL_CLASS (typedef_sym) = LOC_TYPEDEF; | |
1283 | SYMBOL_VALUE (typedef_sym) = valu; | |
176620f1 | 1284 | SYMBOL_DOMAIN (typedef_sym) = VAR_DOMAIN; |
c906108c SS |
1285 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) |
1286 | TYPE_NAME (SYMBOL_TYPE (sym)) | |
22abf04a | 1287 | = obconcat (&objfile->type_obstack, "", "", DEPRECATED_SYMBOL_NAME (sym)); |
c906108c SS |
1288 | add_symbol_to_list (typedef_sym, &file_symbols); |
1289 | } | |
1290 | break; | |
1291 | ||
1292 | case 'V': | |
1293 | /* Static symbol of local scope */ | |
1294 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
1295 | SYMBOL_CLASS (sym) = LOC_STATIC; | |
1296 | SYMBOL_VALUE_ADDRESS (sym) = valu; | |
1297 | #ifdef STATIC_TRANSFORM_NAME | |
22abf04a | 1298 | if (IS_STATIC_TRANSFORM_NAME (DEPRECATED_SYMBOL_NAME (sym))) |
c5aa993b JM |
1299 | { |
1300 | struct minimal_symbol *msym; | |
22abf04a | 1301 | msym = lookup_minimal_symbol (DEPRECATED_SYMBOL_NAME (sym), NULL, objfile); |
c5aa993b JM |
1302 | if (msym != NULL) |
1303 | { | |
22abf04a | 1304 | DEPRECATED_SYMBOL_NAME (sym) = STATIC_TRANSFORM_NAME (DEPRECATED_SYMBOL_NAME (sym)); |
c5aa993b JM |
1305 | SYMBOL_VALUE_ADDRESS (sym) = SYMBOL_VALUE_ADDRESS (msym); |
1306 | } | |
1307 | } | |
c906108c | 1308 | #endif |
176620f1 | 1309 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1310 | add_symbol_to_list (sym, &local_symbols); |
1311 | break; | |
1312 | ||
1313 | case 'v': | |
1314 | /* Reference parameter */ | |
1315 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
1316 | SYMBOL_CLASS (sym) = LOC_REF_ARG; | |
1317 | SYMBOL_VALUE (sym) = valu; | |
176620f1 | 1318 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1319 | add_symbol_to_list (sym, &local_symbols); |
1320 | break; | |
1321 | ||
1322 | case 'a': | |
1323 | /* Reference parameter which is in a register. */ | |
1324 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
1325 | SYMBOL_CLASS (sym) = LOC_REGPARM_ADDR; | |
1326 | SYMBOL_VALUE (sym) = STAB_REG_TO_REGNUM (valu); | |
64485362 | 1327 | if (SYMBOL_VALUE (sym) >= NUM_REGS + NUM_PSEUDO_REGS) |
c906108c | 1328 | { |
23136709 KB |
1329 | reg_value_complaint (SYMBOL_VALUE (sym), |
1330 | NUM_REGS + NUM_PSEUDO_REGS, | |
de5ad195 | 1331 | SYMBOL_PRINT_NAME (sym)); |
c5aa993b | 1332 | SYMBOL_VALUE (sym) = SP_REGNUM; /* Known safe, though useless */ |
c906108c | 1333 | } |
176620f1 | 1334 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1335 | add_symbol_to_list (sym, &local_symbols); |
1336 | break; | |
1337 | ||
1338 | case 'X': | |
1339 | /* This is used by Sun FORTRAN for "function result value". | |
c5aa993b JM |
1340 | Sun claims ("dbx and dbxtool interfaces", 2nd ed) |
1341 | that Pascal uses it too, but when I tried it Pascal used | |
1342 | "x:3" (local symbol) instead. */ | |
c906108c SS |
1343 | SYMBOL_TYPE (sym) = read_type (&p, objfile); |
1344 | SYMBOL_CLASS (sym) = LOC_LOCAL; | |
1345 | SYMBOL_VALUE (sym) = valu; | |
176620f1 | 1346 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1347 | add_symbol_to_list (sym, &local_symbols); |
1348 | break; | |
c906108c SS |
1349 | |
1350 | default: | |
1351 | SYMBOL_TYPE (sym) = error_type (&p, objfile); | |
1352 | SYMBOL_CLASS (sym) = LOC_CONST; | |
1353 | SYMBOL_VALUE (sym) = 0; | |
176620f1 | 1354 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1355 | add_symbol_to_list (sym, &file_symbols); |
1356 | break; | |
1357 | } | |
1358 | ||
192cb3d4 MK |
1359 | /* Some systems pass variables of certain types by reference instead |
1360 | of by value, i.e. they will pass the address of a structure (in a | |
1361 | register or on the stack) instead of the structure itself. */ | |
c906108c | 1362 | |
192cb3d4 | 1363 | if (gdbarch_stabs_argument_has_addr (current_gdbarch, SYMBOL_TYPE (sym)) |
d03e67c9 | 1364 | && (SYMBOL_CLASS (sym) == LOC_REGPARM || SYMBOL_CLASS (sym) == LOC_ARG)) |
c906108c | 1365 | { |
192cb3d4 MK |
1366 | /* We have to convert LOC_REGPARM to LOC_REGPARM_ADDR (for |
1367 | variables passed in a register). */ | |
1368 | if (SYMBOL_CLASS (sym) == LOC_REGPARM) | |
1369 | SYMBOL_CLASS (sym) = LOC_REGPARM_ADDR; | |
1370 | /* Likewise for converting LOC_ARG to LOC_REF_ARG (for the 7th | |
1371 | and subsequent arguments on SPARC, for example). */ | |
1372 | else if (SYMBOL_CLASS (sym) == LOC_ARG) | |
1373 | SYMBOL_CLASS (sym) = LOC_REF_ARG; | |
c906108c SS |
1374 | } |
1375 | ||
c906108c SS |
1376 | return sym; |
1377 | } | |
1378 | ||
c906108c SS |
1379 | /* Skip rest of this symbol and return an error type. |
1380 | ||
1381 | General notes on error recovery: error_type always skips to the | |
1382 | end of the symbol (modulo cretinous dbx symbol name continuation). | |
1383 | Thus code like this: | |
1384 | ||
1385 | if (*(*pp)++ != ';') | |
c5aa993b | 1386 | return error_type (pp, objfile); |
c906108c SS |
1387 | |
1388 | is wrong because if *pp starts out pointing at '\0' (typically as the | |
1389 | result of an earlier error), it will be incremented to point to the | |
1390 | start of the next symbol, which might produce strange results, at least | |
1391 | if you run off the end of the string table. Instead use | |
1392 | ||
1393 | if (**pp != ';') | |
c5aa993b | 1394 | return error_type (pp, objfile); |
c906108c SS |
1395 | ++*pp; |
1396 | ||
1397 | or | |
1398 | ||
1399 | if (**pp != ';') | |
c5aa993b | 1400 | foo = error_type (pp, objfile); |
c906108c | 1401 | else |
c5aa993b | 1402 | ++*pp; |
c906108c SS |
1403 | |
1404 | And in case it isn't obvious, the point of all this hair is so the compiler | |
1405 | can define new types and new syntaxes, and old versions of the | |
1406 | debugger will be able to read the new symbol tables. */ | |
1407 | ||
1408 | static struct type * | |
fba45db2 | 1409 | error_type (char **pp, struct objfile *objfile) |
c906108c | 1410 | { |
23136709 | 1411 | complaint (&symfile_complaints, "couldn't parse type; debugger out of date?"); |
c906108c SS |
1412 | while (1) |
1413 | { | |
1414 | /* Skip to end of symbol. */ | |
1415 | while (**pp != '\0') | |
1416 | { | |
1417 | (*pp)++; | |
1418 | } | |
1419 | ||
1420 | /* Check for and handle cretinous dbx symbol name continuation! */ | |
1421 | if ((*pp)[-1] == '\\' || (*pp)[-1] == '?') | |
1422 | { | |
1423 | *pp = next_symbol_text (objfile); | |
1424 | } | |
1425 | else | |
1426 | { | |
1427 | break; | |
1428 | } | |
1429 | } | |
1430 | return (builtin_type_error); | |
1431 | } | |
c906108c | 1432 | \f |
c5aa993b | 1433 | |
c906108c SS |
1434 | /* Read type information or a type definition; return the type. Even |
1435 | though this routine accepts either type information or a type | |
1436 | definition, the distinction is relevant--some parts of stabsread.c | |
1437 | assume that type information starts with a digit, '-', or '(' in | |
1438 | deciding whether to call read_type. */ | |
1439 | ||
a7a48797 | 1440 | static struct type * |
aa1ee363 | 1441 | read_type (char **pp, struct objfile *objfile) |
c906108c | 1442 | { |
52f0bd74 | 1443 | struct type *type = 0; |
c906108c SS |
1444 | struct type *type1; |
1445 | int typenums[2]; | |
1446 | char type_descriptor; | |
1447 | ||
1448 | /* Size in bits of type if specified by a type attribute, or -1 if | |
1449 | there is no size attribute. */ | |
1450 | int type_size = -1; | |
1451 | ||
1452 | /* Used to distinguish string and bitstring from char-array and set. */ | |
1453 | int is_string = 0; | |
1454 | ||
e2cd42dd MS |
1455 | /* Used to distinguish vector from array. */ |
1456 | int is_vector = 0; | |
1457 | ||
c906108c SS |
1458 | /* Read type number if present. The type number may be omitted. |
1459 | for instance in a two-dimensional array declared with type | |
1460 | "ar1;1;10;ar1;1;10;4". */ | |
1461 | if ((**pp >= '0' && **pp <= '9') | |
1462 | || **pp == '(' | |
1463 | || **pp == '-') | |
1464 | { | |
1465 | if (read_type_number (pp, typenums) != 0) | |
1466 | return error_type (pp, objfile); | |
c5aa993b | 1467 | |
c906108c | 1468 | /* Type is not being defined here. Either it already exists, |
c5aa993b JM |
1469 | or this is a forward reference to it. dbx_alloc_type handles |
1470 | both cases. */ | |
c906108c SS |
1471 | if (**pp != '=') |
1472 | return dbx_alloc_type (typenums, objfile); | |
1473 | ||
1474 | /* Type is being defined here. */ | |
1475 | /* Skip the '='. | |
c5aa993b JM |
1476 | Also skip the type descriptor - we get it below with (*pp)[-1]. */ |
1477 | (*pp) += 2; | |
c906108c SS |
1478 | } |
1479 | else | |
1480 | { | |
1481 | /* 'typenums=' not present, type is anonymous. Read and return | |
c5aa993b | 1482 | the definition, but don't put it in the type vector. */ |
c906108c SS |
1483 | typenums[0] = typenums[1] = -1; |
1484 | (*pp)++; | |
1485 | } | |
1486 | ||
c5aa993b | 1487 | again: |
c906108c SS |
1488 | type_descriptor = (*pp)[-1]; |
1489 | switch (type_descriptor) | |
1490 | { | |
1491 | case 'x': | |
1492 | { | |
1493 | enum type_code code; | |
1494 | ||
1495 | /* Used to index through file_symbols. */ | |
1496 | struct pending *ppt; | |
1497 | int i; | |
c5aa993b | 1498 | |
c906108c SS |
1499 | /* Name including "struct", etc. */ |
1500 | char *type_name; | |
c5aa993b | 1501 | |
c906108c SS |
1502 | { |
1503 | char *from, *to, *p, *q1, *q2; | |
c5aa993b | 1504 | |
c906108c SS |
1505 | /* Set the type code according to the following letter. */ |
1506 | switch ((*pp)[0]) | |
1507 | { | |
1508 | case 's': | |
1509 | code = TYPE_CODE_STRUCT; | |
1510 | break; | |
1511 | case 'u': | |
1512 | code = TYPE_CODE_UNION; | |
1513 | break; | |
1514 | case 'e': | |
1515 | code = TYPE_CODE_ENUM; | |
1516 | break; | |
1517 | default: | |
1518 | { | |
1519 | /* Complain and keep going, so compilers can invent new | |
1520 | cross-reference types. */ | |
23136709 KB |
1521 | complaint (&symfile_complaints, |
1522 | "Unrecognized cross-reference type `%c'", (*pp)[0]); | |
c906108c SS |
1523 | code = TYPE_CODE_STRUCT; |
1524 | break; | |
1525 | } | |
1526 | } | |
c5aa993b | 1527 | |
c906108c SS |
1528 | q1 = strchr (*pp, '<'); |
1529 | p = strchr (*pp, ':'); | |
1530 | if (p == NULL) | |
1531 | return error_type (pp, objfile); | |
1532 | if (q1 && p > q1 && p[1] == ':') | |
1533 | { | |
1534 | int nesting_level = 0; | |
1535 | for (q2 = q1; *q2; q2++) | |
1536 | { | |
1537 | if (*q2 == '<') | |
1538 | nesting_level++; | |
1539 | else if (*q2 == '>') | |
1540 | nesting_level--; | |
1541 | else if (*q2 == ':' && nesting_level == 0) | |
1542 | break; | |
1543 | } | |
1544 | p = q2; | |
1545 | if (*p != ':') | |
1546 | return error_type (pp, objfile); | |
1547 | } | |
c5aa993b JM |
1548 | to = type_name = |
1549 | (char *) obstack_alloc (&objfile->type_obstack, p - *pp + 1); | |
1550 | ||
c906108c SS |
1551 | /* Copy the name. */ |
1552 | from = *pp + 1; | |
c5aa993b | 1553 | while (from < p) |
c906108c SS |
1554 | *to++ = *from++; |
1555 | *to = '\0'; | |
c5aa993b | 1556 | |
c906108c SS |
1557 | /* Set the pointer ahead of the name which we just read, and |
1558 | the colon. */ | |
1559 | *pp = from + 1; | |
1560 | } | |
1561 | ||
149d821b JB |
1562 | /* If this type has already been declared, then reuse the same |
1563 | type, rather than allocating a new one. This saves some | |
1564 | memory. */ | |
c906108c SS |
1565 | |
1566 | for (ppt = file_symbols; ppt; ppt = ppt->next) | |
1567 | for (i = 0; i < ppt->nsyms; i++) | |
1568 | { | |
1569 | struct symbol *sym = ppt->symbol[i]; | |
1570 | ||
1571 | if (SYMBOL_CLASS (sym) == LOC_TYPEDEF | |
176620f1 | 1572 | && SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN |
c906108c | 1573 | && (TYPE_CODE (SYMBOL_TYPE (sym)) == code) |
6314a349 | 1574 | && strcmp (DEPRECATED_SYMBOL_NAME (sym), type_name) == 0) |
c906108c | 1575 | { |
c5aa993b | 1576 | obstack_free (&objfile->type_obstack, type_name); |
c906108c | 1577 | type = SYMBOL_TYPE (sym); |
149d821b JB |
1578 | if (typenums[0] != -1) |
1579 | *dbx_lookup_type (typenums) = type; | |
c906108c SS |
1580 | return type; |
1581 | } | |
1582 | } | |
1583 | ||
1584 | /* Didn't find the type to which this refers, so we must | |
1585 | be dealing with a forward reference. Allocate a type | |
1586 | structure for it, and keep track of it so we can | |
1587 | fill in the rest of the fields when we get the full | |
1588 | type. */ | |
1589 | type = dbx_alloc_type (typenums, objfile); | |
1590 | TYPE_CODE (type) = code; | |
1591 | TYPE_TAG_NAME (type) = type_name; | |
c5aa993b | 1592 | INIT_CPLUS_SPECIFIC (type); |
c906108c SS |
1593 | TYPE_FLAGS (type) |= TYPE_FLAG_STUB; |
1594 | ||
1595 | add_undefined_type (type); | |
1596 | return type; | |
1597 | } | |
1598 | ||
c5aa993b | 1599 | case '-': /* RS/6000 built-in type */ |
c906108c SS |
1600 | case '0': |
1601 | case '1': | |
1602 | case '2': | |
1603 | case '3': | |
1604 | case '4': | |
1605 | case '5': | |
1606 | case '6': | |
1607 | case '7': | |
1608 | case '8': | |
1609 | case '9': | |
1610 | case '(': | |
1611 | (*pp)--; | |
1612 | ||
1613 | /* We deal with something like t(1,2)=(3,4)=... which | |
c5aa993b | 1614 | the Lucid compiler and recent gcc versions (post 2.7.3) use. */ |
c906108c SS |
1615 | |
1616 | /* Allocate and enter the typedef type first. | |
c5aa993b | 1617 | This handles recursive types. */ |
c906108c SS |
1618 | type = dbx_alloc_type (typenums, objfile); |
1619 | TYPE_CODE (type) = TYPE_CODE_TYPEDEF; | |
c5aa993b JM |
1620 | { |
1621 | struct type *xtype = read_type (pp, objfile); | |
c906108c SS |
1622 | if (type == xtype) |
1623 | { | |
1624 | /* It's being defined as itself. That means it is "void". */ | |
1625 | TYPE_CODE (type) = TYPE_CODE_VOID; | |
1626 | TYPE_LENGTH (type) = 1; | |
1627 | } | |
1628 | else if (type_size >= 0 || is_string) | |
1629 | { | |
dd6bda65 DJ |
1630 | /* This is the absolute wrong way to construct types. Every |
1631 | other debug format has found a way around this problem and | |
1632 | the related problems with unnecessarily stubbed types; | |
1633 | someone motivated should attempt to clean up the issue | |
1634 | here as well. Once a type pointed to has been created it | |
13a393b0 JB |
1635 | should not be modified. |
1636 | ||
1637 | Well, it's not *absolutely* wrong. Constructing recursive | |
1638 | types (trees, linked lists) necessarily entails modifying | |
1639 | types after creating them. Constructing any loop structure | |
1640 | entails side effects. The Dwarf 2 reader does handle this | |
1641 | more gracefully (it never constructs more than once | |
1642 | instance of a type object, so it doesn't have to copy type | |
1643 | objects wholesale), but it still mutates type objects after | |
1644 | other folks have references to them. | |
1645 | ||
1646 | Keep in mind that this circularity/mutation issue shows up | |
1647 | at the source language level, too: C's "incomplete types", | |
1648 | for example. So the proper cleanup, I think, would be to | |
1649 | limit GDB's type smashing to match exactly those required | |
1650 | by the source language. So GDB could have a | |
1651 | "complete_this_type" function, but never create unnecessary | |
1652 | copies of a type otherwise. */ | |
dd6bda65 | 1653 | replace_type (type, xtype); |
c906108c SS |
1654 | TYPE_NAME (type) = NULL; |
1655 | TYPE_TAG_NAME (type) = NULL; | |
1656 | } | |
1657 | else | |
1658 | { | |
1659 | TYPE_FLAGS (type) |= TYPE_FLAG_TARGET_STUB; | |
1660 | TYPE_TARGET_TYPE (type) = xtype; | |
1661 | } | |
1662 | } | |
1663 | break; | |
1664 | ||
c5aa993b JM |
1665 | /* In the following types, we must be sure to overwrite any existing |
1666 | type that the typenums refer to, rather than allocating a new one | |
1667 | and making the typenums point to the new one. This is because there | |
1668 | may already be pointers to the existing type (if it had been | |
1669 | forward-referenced), and we must change it to a pointer, function, | |
1670 | reference, or whatever, *in-place*. */ | |
c906108c | 1671 | |
e2cd42dd | 1672 | case '*': /* Pointer to another type */ |
c906108c SS |
1673 | type1 = read_type (pp, objfile); |
1674 | type = make_pointer_type (type1, dbx_lookup_type (typenums)); | |
1675 | break; | |
1676 | ||
c5aa993b | 1677 | case '&': /* Reference to another type */ |
c906108c SS |
1678 | type1 = read_type (pp, objfile); |
1679 | type = make_reference_type (type1, dbx_lookup_type (typenums)); | |
1680 | break; | |
1681 | ||
c5aa993b | 1682 | case 'f': /* Function returning another type */ |
c906108c SS |
1683 | type1 = read_type (pp, objfile); |
1684 | type = make_function_type (type1, dbx_lookup_type (typenums)); | |
1685 | break; | |
1686 | ||
da966255 JB |
1687 | case 'g': /* Prototyped function. (Sun) */ |
1688 | { | |
1689 | /* Unresolved questions: | |
1690 | ||
1691 | - According to Sun's ``STABS Interface Manual'', for 'f' | |
1692 | and 'F' symbol descriptors, a `0' in the argument type list | |
1693 | indicates a varargs function. But it doesn't say how 'g' | |
1694 | type descriptors represent that info. Someone with access | |
1695 | to Sun's toolchain should try it out. | |
1696 | ||
1697 | - According to the comment in define_symbol (search for | |
1698 | `process_prototype_types:'), Sun emits integer arguments as | |
1699 | types which ref themselves --- like `void' types. Do we | |
1700 | have to deal with that here, too? Again, someone with | |
1701 | access to Sun's toolchain should try it out and let us | |
1702 | know. */ | |
1703 | ||
1704 | const char *type_start = (*pp) - 1; | |
1705 | struct type *return_type = read_type (pp, objfile); | |
1706 | struct type *func_type | |
1707 | = make_function_type (return_type, dbx_lookup_type (typenums)); | |
1708 | struct type_list { | |
1709 | struct type *type; | |
1710 | struct type_list *next; | |
1711 | } *arg_types = 0; | |
1712 | int num_args = 0; | |
1713 | ||
1714 | while (**pp && **pp != '#') | |
1715 | { | |
1716 | struct type *arg_type = read_type (pp, objfile); | |
1717 | struct type_list *new = alloca (sizeof (*new)); | |
1718 | new->type = arg_type; | |
1719 | new->next = arg_types; | |
1720 | arg_types = new; | |
1721 | num_args++; | |
1722 | } | |
1723 | if (**pp == '#') | |
1724 | ++*pp; | |
1725 | else | |
1726 | { | |
23136709 KB |
1727 | complaint (&symfile_complaints, |
1728 | "Prototyped function type didn't end arguments with `#':\n%s", | |
1729 | type_start); | |
da966255 JB |
1730 | } |
1731 | ||
1732 | /* If there is just one argument whose type is `void', then | |
1733 | that's just an empty argument list. */ | |
1734 | if (arg_types | |
1735 | && ! arg_types->next | |
1736 | && TYPE_CODE (arg_types->type) == TYPE_CODE_VOID) | |
1737 | num_args = 0; | |
1738 | ||
1739 | TYPE_FIELDS (func_type) | |
1740 | = (struct field *) TYPE_ALLOC (func_type, | |
1741 | num_args * sizeof (struct field)); | |
1742 | memset (TYPE_FIELDS (func_type), 0, num_args * sizeof (struct field)); | |
1743 | { | |
1744 | int i; | |
1745 | struct type_list *t; | |
1746 | ||
1747 | /* We stuck each argument type onto the front of the list | |
1748 | when we read it, so the list is reversed. Build the | |
1749 | fields array right-to-left. */ | |
1750 | for (t = arg_types, i = num_args - 1; t; t = t->next, i--) | |
1751 | TYPE_FIELD_TYPE (func_type, i) = t->type; | |
1752 | } | |
1753 | TYPE_NFIELDS (func_type) = num_args; | |
1754 | TYPE_FLAGS (func_type) |= TYPE_FLAG_PROTOTYPED; | |
1755 | ||
1756 | type = func_type; | |
1757 | break; | |
1758 | } | |
1759 | ||
c5aa993b | 1760 | case 'k': /* Const qualifier on some type (Sun) */ |
c906108c | 1761 | type = read_type (pp, objfile); |
d7242108 DJ |
1762 | type = make_cv_type (1, TYPE_VOLATILE (type), type, |
1763 | dbx_lookup_type (typenums)); | |
c906108c SS |
1764 | break; |
1765 | ||
c5aa993b | 1766 | case 'B': /* Volatile qual on some type (Sun) */ |
c906108c | 1767 | type = read_type (pp, objfile); |
d7242108 DJ |
1768 | type = make_cv_type (TYPE_CONST (type), 1, type, |
1769 | dbx_lookup_type (typenums)); | |
c906108c SS |
1770 | break; |
1771 | ||
1772 | case '@': | |
c5aa993b JM |
1773 | if (isdigit (**pp) || **pp == '(' || **pp == '-') |
1774 | { /* Member (class & variable) type */ | |
c906108c SS |
1775 | /* FIXME -- we should be doing smash_to_XXX types here. */ |
1776 | ||
1777 | struct type *domain = read_type (pp, objfile); | |
1778 | struct type *memtype; | |
1779 | ||
1780 | if (**pp != ',') | |
1781 | /* Invalid member type data format. */ | |
1782 | return error_type (pp, objfile); | |
1783 | ++*pp; | |
1784 | ||
1785 | memtype = read_type (pp, objfile); | |
1786 | type = dbx_alloc_type (typenums, objfile); | |
1787 | smash_to_member_type (type, domain, memtype); | |
1788 | } | |
c5aa993b JM |
1789 | else |
1790 | /* type attribute */ | |
c906108c SS |
1791 | { |
1792 | char *attr = *pp; | |
1793 | /* Skip to the semicolon. */ | |
1794 | while (**pp != ';' && **pp != '\0') | |
1795 | ++(*pp); | |
1796 | if (**pp == '\0') | |
1797 | return error_type (pp, objfile); | |
1798 | else | |
c5aa993b | 1799 | ++ * pp; /* Skip the semicolon. */ |
c906108c SS |
1800 | |
1801 | switch (*attr) | |
1802 | { | |
e2cd42dd | 1803 | case 's': /* Size attribute */ |
c906108c SS |
1804 | type_size = atoi (attr + 1); |
1805 | if (type_size <= 0) | |
1806 | type_size = -1; | |
1807 | break; | |
1808 | ||
e2cd42dd MS |
1809 | case 'S': /* String attribute */ |
1810 | /* FIXME: check to see if following type is array? */ | |
c906108c SS |
1811 | is_string = 1; |
1812 | break; | |
1813 | ||
e2cd42dd MS |
1814 | case 'V': /* Vector attribute */ |
1815 | /* FIXME: check to see if following type is array? */ | |
1816 | is_vector = 1; | |
1817 | break; | |
1818 | ||
c906108c SS |
1819 | default: |
1820 | /* Ignore unrecognized type attributes, so future compilers | |
c5aa993b | 1821 | can invent new ones. */ |
c906108c SS |
1822 | break; |
1823 | } | |
1824 | ++*pp; | |
1825 | goto again; | |
1826 | } | |
1827 | break; | |
1828 | ||
c5aa993b | 1829 | case '#': /* Method (class & fn) type */ |
c906108c SS |
1830 | if ((*pp)[0] == '#') |
1831 | { | |
1832 | /* We'll get the parameter types from the name. */ | |
1833 | struct type *return_type; | |
1834 | ||
1835 | (*pp)++; | |
1836 | return_type = read_type (pp, objfile); | |
1837 | if (*(*pp)++ != ';') | |
23136709 KB |
1838 | complaint (&symfile_complaints, |
1839 | "invalid (minimal) member type data format at symtab pos %d.", | |
1840 | symnum); | |
c906108c SS |
1841 | type = allocate_stub_method (return_type); |
1842 | if (typenums[0] != -1) | |
1843 | *dbx_lookup_type (typenums) = type; | |
1844 | } | |
1845 | else | |
1846 | { | |
1847 | struct type *domain = read_type (pp, objfile); | |
1848 | struct type *return_type; | |
ad2f7632 DJ |
1849 | struct field *args; |
1850 | int nargs, varargs; | |
c906108c SS |
1851 | |
1852 | if (**pp != ',') | |
1853 | /* Invalid member type data format. */ | |
1854 | return error_type (pp, objfile); | |
1855 | else | |
1856 | ++(*pp); | |
1857 | ||
1858 | return_type = read_type (pp, objfile); | |
ad2f7632 | 1859 | args = read_args (pp, ';', objfile, &nargs, &varargs); |
c906108c | 1860 | type = dbx_alloc_type (typenums, objfile); |
ad2f7632 DJ |
1861 | smash_to_method_type (type, domain, return_type, args, |
1862 | nargs, varargs); | |
c906108c SS |
1863 | } |
1864 | break; | |
1865 | ||
c5aa993b | 1866 | case 'r': /* Range type */ |
c906108c SS |
1867 | type = read_range_type (pp, typenums, objfile); |
1868 | if (typenums[0] != -1) | |
1869 | *dbx_lookup_type (typenums) = type; | |
1870 | break; | |
1871 | ||
1872 | case 'b': | |
c906108c SS |
1873 | { |
1874 | /* Sun ACC builtin int type */ | |
1875 | type = read_sun_builtin_type (pp, typenums, objfile); | |
1876 | if (typenums[0] != -1) | |
1877 | *dbx_lookup_type (typenums) = type; | |
1878 | } | |
1879 | break; | |
1880 | ||
c5aa993b | 1881 | case 'R': /* Sun ACC builtin float type */ |
c906108c SS |
1882 | type = read_sun_floating_type (pp, typenums, objfile); |
1883 | if (typenums[0] != -1) | |
1884 | *dbx_lookup_type (typenums) = type; | |
1885 | break; | |
c5aa993b JM |
1886 | |
1887 | case 'e': /* Enumeration type */ | |
c906108c SS |
1888 | type = dbx_alloc_type (typenums, objfile); |
1889 | type = read_enum_type (pp, type, objfile); | |
1890 | if (typenums[0] != -1) | |
1891 | *dbx_lookup_type (typenums) = type; | |
1892 | break; | |
1893 | ||
c5aa993b JM |
1894 | case 's': /* Struct type */ |
1895 | case 'u': /* Union type */ | |
2ae1c2d2 JB |
1896 | { |
1897 | enum type_code type_code = TYPE_CODE_UNDEF; | |
1898 | type = dbx_alloc_type (typenums, objfile); | |
1899 | switch (type_descriptor) | |
1900 | { | |
1901 | case 's': | |
1902 | type_code = TYPE_CODE_STRUCT; | |
1903 | break; | |
1904 | case 'u': | |
1905 | type_code = TYPE_CODE_UNION; | |
1906 | break; | |
1907 | } | |
1908 | type = read_struct_type (pp, type, type_code, objfile); | |
1909 | break; | |
1910 | } | |
c906108c | 1911 | |
c5aa993b | 1912 | case 'a': /* Array type */ |
c906108c SS |
1913 | if (**pp != 'r') |
1914 | return error_type (pp, objfile); | |
1915 | ++*pp; | |
c5aa993b | 1916 | |
c906108c SS |
1917 | type = dbx_alloc_type (typenums, objfile); |
1918 | type = read_array_type (pp, type, objfile); | |
1919 | if (is_string) | |
1920 | TYPE_CODE (type) = TYPE_CODE_STRING; | |
e2cd42dd MS |
1921 | if (is_vector) |
1922 | TYPE_FLAGS (type) |= TYPE_FLAG_VECTOR; | |
c906108c SS |
1923 | break; |
1924 | ||
e2cd42dd | 1925 | case 'S': /* Set or bitstring type */ |
c906108c | 1926 | type1 = read_type (pp, objfile); |
c5aa993b | 1927 | type = create_set_type ((struct type *) NULL, type1); |
c906108c SS |
1928 | if (is_string) |
1929 | TYPE_CODE (type) = TYPE_CODE_BITSTRING; | |
1930 | if (typenums[0] != -1) | |
1931 | *dbx_lookup_type (typenums) = type; | |
1932 | break; | |
1933 | ||
1934 | default: | |
1935 | --*pp; /* Go back to the symbol in error */ | |
c5aa993b | 1936 | /* Particularly important if it was \0! */ |
c906108c SS |
1937 | return error_type (pp, objfile); |
1938 | } | |
1939 | ||
1940 | if (type == 0) | |
1941 | { | |
1942 | warning ("GDB internal error, type is NULL in stabsread.c\n"); | |
1943 | return error_type (pp, objfile); | |
1944 | } | |
1945 | ||
1946 | /* Size specified in a type attribute overrides any other size. */ | |
1947 | if (type_size != -1) | |
1948 | TYPE_LENGTH (type) = (type_size + TARGET_CHAR_BIT - 1) / TARGET_CHAR_BIT; | |
1949 | ||
1950 | return type; | |
1951 | } | |
1952 | \f | |
1953 | /* RS/6000 xlc/dbx combination uses a set of builtin types, starting from -1. | |
1954 | Return the proper type node for a given builtin type number. */ | |
1955 | ||
1956 | static struct type * | |
fba45db2 | 1957 | rs6000_builtin_type (int typenum) |
c906108c SS |
1958 | { |
1959 | /* We recognize types numbered from -NUMBER_RECOGNIZED to -1. */ | |
1960 | #define NUMBER_RECOGNIZED 34 | |
1961 | /* This includes an empty slot for type number -0. */ | |
1962 | static struct type *negative_types[NUMBER_RECOGNIZED + 1]; | |
1963 | struct type *rettype = NULL; | |
1964 | ||
1965 | if (typenum >= 0 || typenum < -NUMBER_RECOGNIZED) | |
1966 | { | |
23136709 | 1967 | complaint (&symfile_complaints, "Unknown builtin type %d", typenum); |
c906108c SS |
1968 | return builtin_type_error; |
1969 | } | |
1970 | if (negative_types[-typenum] != NULL) | |
1971 | return negative_types[-typenum]; | |
1972 | ||
1973 | #if TARGET_CHAR_BIT != 8 | |
c5aa993b | 1974 | #error This code wrong for TARGET_CHAR_BIT not 8 |
c906108c SS |
1975 | /* These definitions all assume that TARGET_CHAR_BIT is 8. I think |
1976 | that if that ever becomes not true, the correct fix will be to | |
1977 | make the size in the struct type to be in bits, not in units of | |
1978 | TARGET_CHAR_BIT. */ | |
1979 | #endif | |
1980 | ||
1981 | switch (-typenum) | |
1982 | { | |
1983 | case 1: | |
1984 | /* The size of this and all the other types are fixed, defined | |
c5aa993b JM |
1985 | by the debugging format. If there is a type called "int" which |
1986 | is other than 32 bits, then it should use a new negative type | |
1987 | number (or avoid negative type numbers for that case). | |
1988 | See stabs.texinfo. */ | |
c906108c SS |
1989 | rettype = init_type (TYPE_CODE_INT, 4, 0, "int", NULL); |
1990 | break; | |
1991 | case 2: | |
1992 | rettype = init_type (TYPE_CODE_INT, 1, 0, "char", NULL); | |
1993 | break; | |
1994 | case 3: | |
1995 | rettype = init_type (TYPE_CODE_INT, 2, 0, "short", NULL); | |
1996 | break; | |
1997 | case 4: | |
1998 | rettype = init_type (TYPE_CODE_INT, 4, 0, "long", NULL); | |
1999 | break; | |
2000 | case 5: | |
2001 | rettype = init_type (TYPE_CODE_INT, 1, TYPE_FLAG_UNSIGNED, | |
2002 | "unsigned char", NULL); | |
2003 | break; | |
2004 | case 6: | |
2005 | rettype = init_type (TYPE_CODE_INT, 1, 0, "signed char", NULL); | |
2006 | break; | |
2007 | case 7: | |
2008 | rettype = init_type (TYPE_CODE_INT, 2, TYPE_FLAG_UNSIGNED, | |
2009 | "unsigned short", NULL); | |
2010 | break; | |
2011 | case 8: | |
2012 | rettype = init_type (TYPE_CODE_INT, 4, TYPE_FLAG_UNSIGNED, | |
2013 | "unsigned int", NULL); | |
2014 | break; | |
2015 | case 9: | |
2016 | rettype = init_type (TYPE_CODE_INT, 4, TYPE_FLAG_UNSIGNED, | |
2017 | "unsigned", NULL); | |
2018 | case 10: | |
2019 | rettype = init_type (TYPE_CODE_INT, 4, TYPE_FLAG_UNSIGNED, | |
2020 | "unsigned long", NULL); | |
2021 | break; | |
2022 | case 11: | |
2023 | rettype = init_type (TYPE_CODE_VOID, 1, 0, "void", NULL); | |
2024 | break; | |
2025 | case 12: | |
2026 | /* IEEE single precision (32 bit). */ | |
2027 | rettype = init_type (TYPE_CODE_FLT, 4, 0, "float", NULL); | |
2028 | break; | |
2029 | case 13: | |
2030 | /* IEEE double precision (64 bit). */ | |
2031 | rettype = init_type (TYPE_CODE_FLT, 8, 0, "double", NULL); | |
2032 | break; | |
2033 | case 14: | |
2034 | /* This is an IEEE double on the RS/6000, and different machines with | |
c5aa993b JM |
2035 | different sizes for "long double" should use different negative |
2036 | type numbers. See stabs.texinfo. */ | |
c906108c SS |
2037 | rettype = init_type (TYPE_CODE_FLT, 8, 0, "long double", NULL); |
2038 | break; | |
2039 | case 15: | |
2040 | rettype = init_type (TYPE_CODE_INT, 4, 0, "integer", NULL); | |
2041 | break; | |
2042 | case 16: | |
2043 | rettype = init_type (TYPE_CODE_BOOL, 4, TYPE_FLAG_UNSIGNED, | |
2044 | "boolean", NULL); | |
2045 | break; | |
2046 | case 17: | |
2047 | rettype = init_type (TYPE_CODE_FLT, 4, 0, "short real", NULL); | |
2048 | break; | |
2049 | case 18: | |
2050 | rettype = init_type (TYPE_CODE_FLT, 8, 0, "real", NULL); | |
2051 | break; | |
2052 | case 19: | |
2053 | rettype = init_type (TYPE_CODE_ERROR, 0, 0, "stringptr", NULL); | |
2054 | break; | |
2055 | case 20: | |
2056 | rettype = init_type (TYPE_CODE_CHAR, 1, TYPE_FLAG_UNSIGNED, | |
2057 | "character", NULL); | |
2058 | break; | |
2059 | case 21: | |
2060 | rettype = init_type (TYPE_CODE_BOOL, 1, TYPE_FLAG_UNSIGNED, | |
2061 | "logical*1", NULL); | |
2062 | break; | |
2063 | case 22: | |
2064 | rettype = init_type (TYPE_CODE_BOOL, 2, TYPE_FLAG_UNSIGNED, | |
2065 | "logical*2", NULL); | |
2066 | break; | |
2067 | case 23: | |
2068 | rettype = init_type (TYPE_CODE_BOOL, 4, TYPE_FLAG_UNSIGNED, | |
2069 | "logical*4", NULL); | |
2070 | break; | |
2071 | case 24: | |
2072 | rettype = init_type (TYPE_CODE_BOOL, 4, TYPE_FLAG_UNSIGNED, | |
2073 | "logical", NULL); | |
2074 | break; | |
2075 | case 25: | |
2076 | /* Complex type consisting of two IEEE single precision values. */ | |
2077 | rettype = init_type (TYPE_CODE_COMPLEX, 8, 0, "complex", NULL); | |
f65ca430 DJ |
2078 | TYPE_TARGET_TYPE (rettype) = init_type (TYPE_CODE_FLT, 4, 0, "float", |
2079 | NULL); | |
c906108c SS |
2080 | break; |
2081 | case 26: | |
2082 | /* Complex type consisting of two IEEE double precision values. */ | |
2083 | rettype = init_type (TYPE_CODE_COMPLEX, 16, 0, "double complex", NULL); | |
f65ca430 DJ |
2084 | TYPE_TARGET_TYPE (rettype) = init_type (TYPE_CODE_FLT, 8, 0, "double", |
2085 | NULL); | |
c906108c SS |
2086 | break; |
2087 | case 27: | |
2088 | rettype = init_type (TYPE_CODE_INT, 1, 0, "integer*1", NULL); | |
2089 | break; | |
2090 | case 28: | |
2091 | rettype = init_type (TYPE_CODE_INT, 2, 0, "integer*2", NULL); | |
2092 | break; | |
2093 | case 29: | |
2094 | rettype = init_type (TYPE_CODE_INT, 4, 0, "integer*4", NULL); | |
2095 | break; | |
2096 | case 30: | |
2097 | rettype = init_type (TYPE_CODE_CHAR, 2, 0, "wchar", NULL); | |
2098 | break; | |
2099 | case 31: | |
2100 | rettype = init_type (TYPE_CODE_INT, 8, 0, "long long", NULL); | |
2101 | break; | |
2102 | case 32: | |
2103 | rettype = init_type (TYPE_CODE_INT, 8, TYPE_FLAG_UNSIGNED, | |
2104 | "unsigned long long", NULL); | |
2105 | break; | |
2106 | case 33: | |
2107 | rettype = init_type (TYPE_CODE_INT, 8, TYPE_FLAG_UNSIGNED, | |
2108 | "logical*8", NULL); | |
2109 | break; | |
2110 | case 34: | |
2111 | rettype = init_type (TYPE_CODE_INT, 8, 0, "integer*8", NULL); | |
2112 | break; | |
2113 | } | |
2114 | negative_types[-typenum] = rettype; | |
2115 | return rettype; | |
2116 | } | |
2117 | \f | |
2118 | /* This page contains subroutines of read_type. */ | |
2119 | ||
de17c821 DJ |
2120 | /* Replace *OLD_NAME with the method name portion of PHYSNAME. */ |
2121 | ||
2122 | static void | |
2123 | update_method_name_from_physname (char **old_name, char *physname) | |
2124 | { | |
2125 | char *method_name; | |
2126 | ||
2127 | method_name = method_name_from_physname (physname); | |
2128 | ||
2129 | if (method_name == NULL) | |
c263362b DJ |
2130 | { |
2131 | complaint (&symfile_complaints, | |
2132 | "Method has bad physname %s\n", physname); | |
2133 | return; | |
2134 | } | |
de17c821 DJ |
2135 | |
2136 | if (strcmp (*old_name, method_name) != 0) | |
2137 | { | |
2138 | xfree (*old_name); | |
2139 | *old_name = method_name; | |
2140 | } | |
2141 | else | |
2142 | xfree (method_name); | |
2143 | } | |
2144 | ||
c906108c SS |
2145 | /* Read member function stabs info for C++ classes. The form of each member |
2146 | function data is: | |
2147 | ||
c5aa993b | 2148 | NAME :: TYPENUM[=type definition] ARGS : PHYSNAME ; |
c906108c SS |
2149 | |
2150 | An example with two member functions is: | |
2151 | ||
c5aa993b | 2152 | afunc1::20=##15;:i;2A.;afunc2::20:i;2A.; |
c906108c SS |
2153 | |
2154 | For the case of overloaded operators, the format is op$::*.funcs, where | |
2155 | $ is the CPLUS_MARKER (usually '$'), `*' holds the place for an operator | |
2156 | name (such as `+=') and `.' marks the end of the operator name. | |
2157 | ||
2158 | Returns 1 for success, 0 for failure. */ | |
2159 | ||
2160 | static int | |
fba45db2 KB |
2161 | read_member_functions (struct field_info *fip, char **pp, struct type *type, |
2162 | struct objfile *objfile) | |
c906108c SS |
2163 | { |
2164 | int nfn_fields = 0; | |
2165 | int length = 0; | |
2166 | /* Total number of member functions defined in this class. If the class | |
2167 | defines two `f' functions, and one `g' function, then this will have | |
2168 | the value 3. */ | |
2169 | int total_length = 0; | |
2170 | int i; | |
2171 | struct next_fnfield | |
2172 | { | |
2173 | struct next_fnfield *next; | |
2174 | struct fn_field fn_field; | |
c5aa993b JM |
2175 | } |
2176 | *sublist; | |
c906108c SS |
2177 | struct type *look_ahead_type; |
2178 | struct next_fnfieldlist *new_fnlist; | |
2179 | struct next_fnfield *new_sublist; | |
2180 | char *main_fn_name; | |
52f0bd74 | 2181 | char *p; |
c5aa993b | 2182 | |
c906108c SS |
2183 | /* Process each list until we find something that is not a member function |
2184 | or find the end of the functions. */ | |
2185 | ||
2186 | while (**pp != ';') | |
2187 | { | |
2188 | /* We should be positioned at the start of the function name. | |
c5aa993b JM |
2189 | Scan forward to find the first ':' and if it is not the |
2190 | first of a "::" delimiter, then this is not a member function. */ | |
c906108c SS |
2191 | p = *pp; |
2192 | while (*p != ':') | |
2193 | { | |
2194 | p++; | |
2195 | } | |
2196 | if (p[1] != ':') | |
2197 | { | |
2198 | break; | |
2199 | } | |
2200 | ||
2201 | sublist = NULL; | |
2202 | look_ahead_type = NULL; | |
2203 | length = 0; | |
c5aa993b | 2204 | |
c906108c SS |
2205 | new_fnlist = (struct next_fnfieldlist *) |
2206 | xmalloc (sizeof (struct next_fnfieldlist)); | |
b8c9b27d | 2207 | make_cleanup (xfree, new_fnlist); |
c906108c | 2208 | memset (new_fnlist, 0, sizeof (struct next_fnfieldlist)); |
c5aa993b | 2209 | |
c906108c SS |
2210 | if ((*pp)[0] == 'o' && (*pp)[1] == 'p' && is_cplus_marker ((*pp)[2])) |
2211 | { | |
2212 | /* This is a completely wierd case. In order to stuff in the | |
2213 | names that might contain colons (the usual name delimiter), | |
2214 | Mike Tiemann defined a different name format which is | |
2215 | signalled if the identifier is "op$". In that case, the | |
2216 | format is "op$::XXXX." where XXXX is the name. This is | |
2217 | used for names like "+" or "=". YUUUUUUUK! FIXME! */ | |
2218 | /* This lets the user type "break operator+". | |
2219 | We could just put in "+" as the name, but that wouldn't | |
2220 | work for "*". */ | |
8343f86c | 2221 | static char opname[32] = "op$"; |
c906108c | 2222 | char *o = opname + 3; |
c5aa993b | 2223 | |
c906108c SS |
2224 | /* Skip past '::'. */ |
2225 | *pp = p + 2; | |
2226 | ||
2227 | STABS_CONTINUE (pp, objfile); | |
2228 | p = *pp; | |
2229 | while (*p != '.') | |
2230 | { | |
2231 | *o++ = *p++; | |
2232 | } | |
2233 | main_fn_name = savestring (opname, o - opname); | |
2234 | /* Skip past '.' */ | |
2235 | *pp = p + 1; | |
2236 | } | |
2237 | else | |
2238 | { | |
2239 | main_fn_name = savestring (*pp, p - *pp); | |
2240 | /* Skip past '::'. */ | |
2241 | *pp = p + 2; | |
2242 | } | |
c5aa993b JM |
2243 | new_fnlist->fn_fieldlist.name = main_fn_name; |
2244 | ||
c906108c SS |
2245 | do |
2246 | { | |
2247 | new_sublist = | |
2248 | (struct next_fnfield *) xmalloc (sizeof (struct next_fnfield)); | |
b8c9b27d | 2249 | make_cleanup (xfree, new_sublist); |
c906108c | 2250 | memset (new_sublist, 0, sizeof (struct next_fnfield)); |
c5aa993b | 2251 | |
c906108c SS |
2252 | /* Check for and handle cretinous dbx symbol name continuation! */ |
2253 | if (look_ahead_type == NULL) | |
2254 | { | |
2255 | /* Normal case. */ | |
2256 | STABS_CONTINUE (pp, objfile); | |
c5aa993b JM |
2257 | |
2258 | new_sublist->fn_field.type = read_type (pp, objfile); | |
c906108c SS |
2259 | if (**pp != ':') |
2260 | { | |
2261 | /* Invalid symtab info for member function. */ | |
2262 | return 0; | |
2263 | } | |
2264 | } | |
2265 | else | |
2266 | { | |
2267 | /* g++ version 1 kludge */ | |
c5aa993b | 2268 | new_sublist->fn_field.type = look_ahead_type; |
c906108c SS |
2269 | look_ahead_type = NULL; |
2270 | } | |
c5aa993b | 2271 | |
c906108c SS |
2272 | (*pp)++; |
2273 | p = *pp; | |
2274 | while (*p != ';') | |
2275 | { | |
2276 | p++; | |
2277 | } | |
c5aa993b | 2278 | |
c906108c SS |
2279 | /* If this is just a stub, then we don't have the real name here. */ |
2280 | ||
74a9bb82 | 2281 | if (TYPE_STUB (new_sublist->fn_field.type)) |
c906108c | 2282 | { |
c5aa993b JM |
2283 | if (!TYPE_DOMAIN_TYPE (new_sublist->fn_field.type)) |
2284 | TYPE_DOMAIN_TYPE (new_sublist->fn_field.type) = type; | |
2285 | new_sublist->fn_field.is_stub = 1; | |
c906108c | 2286 | } |
c5aa993b | 2287 | new_sublist->fn_field.physname = savestring (*pp, p - *pp); |
c906108c | 2288 | *pp = p + 1; |
c5aa993b | 2289 | |
c906108c SS |
2290 | /* Set this member function's visibility fields. */ |
2291 | switch (*(*pp)++) | |
2292 | { | |
c5aa993b JM |
2293 | case VISIBILITY_PRIVATE: |
2294 | new_sublist->fn_field.is_private = 1; | |
2295 | break; | |
2296 | case VISIBILITY_PROTECTED: | |
2297 | new_sublist->fn_field.is_protected = 1; | |
2298 | break; | |
c906108c | 2299 | } |
c5aa993b | 2300 | |
c906108c SS |
2301 | STABS_CONTINUE (pp, objfile); |
2302 | switch (**pp) | |
2303 | { | |
c5aa993b JM |
2304 | case 'A': /* Normal functions. */ |
2305 | new_sublist->fn_field.is_const = 0; | |
2306 | new_sublist->fn_field.is_volatile = 0; | |
2307 | (*pp)++; | |
2308 | break; | |
2309 | case 'B': /* `const' member functions. */ | |
2310 | new_sublist->fn_field.is_const = 1; | |
2311 | new_sublist->fn_field.is_volatile = 0; | |
2312 | (*pp)++; | |
2313 | break; | |
2314 | case 'C': /* `volatile' member function. */ | |
2315 | new_sublist->fn_field.is_const = 0; | |
2316 | new_sublist->fn_field.is_volatile = 1; | |
2317 | (*pp)++; | |
2318 | break; | |
2319 | case 'D': /* `const volatile' member function. */ | |
2320 | new_sublist->fn_field.is_const = 1; | |
2321 | new_sublist->fn_field.is_volatile = 1; | |
2322 | (*pp)++; | |
2323 | break; | |
2324 | case '*': /* File compiled with g++ version 1 -- no info */ | |
2325 | case '?': | |
2326 | case '.': | |
2327 | break; | |
2328 | default: | |
23136709 KB |
2329 | complaint (&symfile_complaints, |
2330 | "const/volatile indicator missing, got '%c'", **pp); | |
c5aa993b | 2331 | break; |
c906108c | 2332 | } |
c5aa993b | 2333 | |
c906108c SS |
2334 | switch (*(*pp)++) |
2335 | { | |
c5aa993b | 2336 | case '*': |
c906108c SS |
2337 | { |
2338 | int nbits; | |
c5aa993b | 2339 | /* virtual member function, followed by index. |
c906108c SS |
2340 | The sign bit is set to distinguish pointers-to-methods |
2341 | from virtual function indicies. Since the array is | |
2342 | in words, the quantity must be shifted left by 1 | |
2343 | on 16 bit machine, and by 2 on 32 bit machine, forcing | |
2344 | the sign bit out, and usable as a valid index into | |
2345 | the array. Remove the sign bit here. */ | |
c5aa993b | 2346 | new_sublist->fn_field.voffset = |
c906108c SS |
2347 | (0x7fffffff & read_huge_number (pp, ';', &nbits)) + 2; |
2348 | if (nbits != 0) | |
2349 | return 0; | |
c5aa993b | 2350 | |
c906108c SS |
2351 | STABS_CONTINUE (pp, objfile); |
2352 | if (**pp == ';' || **pp == '\0') | |
2353 | { | |
2354 | /* Must be g++ version 1. */ | |
c5aa993b | 2355 | new_sublist->fn_field.fcontext = 0; |
c906108c SS |
2356 | } |
2357 | else | |
2358 | { | |
2359 | /* Figure out from whence this virtual function came. | |
2360 | It may belong to virtual function table of | |
2361 | one of its baseclasses. */ | |
2362 | look_ahead_type = read_type (pp, objfile); | |
2363 | if (**pp == ':') | |
2364 | { | |
2365 | /* g++ version 1 overloaded methods. */ | |
2366 | } | |
2367 | else | |
2368 | { | |
c5aa993b | 2369 | new_sublist->fn_field.fcontext = look_ahead_type; |
c906108c SS |
2370 | if (**pp != ';') |
2371 | { | |
2372 | return 0; | |
2373 | } | |
2374 | else | |
2375 | { | |
2376 | ++*pp; | |
2377 | } | |
2378 | look_ahead_type = NULL; | |
2379 | } | |
2380 | } | |
2381 | break; | |
2382 | } | |
c5aa993b JM |
2383 | case '?': |
2384 | /* static member function. */ | |
4ea09c10 PS |
2385 | { |
2386 | int slen = strlen (main_fn_name); | |
2387 | ||
2388 | new_sublist->fn_field.voffset = VOFFSET_STATIC; | |
2389 | ||
2390 | /* For static member functions, we can't tell if they | |
2391 | are stubbed, as they are put out as functions, and not as | |
2392 | methods. | |
2393 | GCC v2 emits the fully mangled name if | |
2394 | dbxout.c:flag_minimal_debug is not set, so we have to | |
2395 | detect a fully mangled physname here and set is_stub | |
2396 | accordingly. Fully mangled physnames in v2 start with | |
2397 | the member function name, followed by two underscores. | |
2398 | GCC v3 currently always emits stubbed member functions, | |
2399 | but with fully mangled physnames, which start with _Z. */ | |
2400 | if (!(strncmp (new_sublist->fn_field.physname, | |
2401 | main_fn_name, slen) == 0 | |
2402 | && new_sublist->fn_field.physname[slen] == '_' | |
2403 | && new_sublist->fn_field.physname[slen + 1] == '_')) | |
2404 | { | |
2405 | new_sublist->fn_field.is_stub = 1; | |
2406 | } | |
2407 | break; | |
2408 | } | |
c5aa993b JM |
2409 | |
2410 | default: | |
2411 | /* error */ | |
23136709 KB |
2412 | complaint (&symfile_complaints, |
2413 | "member function type missing, got '%c'", (*pp)[-1]); | |
c5aa993b JM |
2414 | /* Fall through into normal member function. */ |
2415 | ||
2416 | case '.': | |
2417 | /* normal member function. */ | |
2418 | new_sublist->fn_field.voffset = 0; | |
2419 | new_sublist->fn_field.fcontext = 0; | |
2420 | break; | |
c906108c | 2421 | } |
c5aa993b JM |
2422 | |
2423 | new_sublist->next = sublist; | |
c906108c SS |
2424 | sublist = new_sublist; |
2425 | length++; | |
2426 | STABS_CONTINUE (pp, objfile); | |
2427 | } | |
2428 | while (**pp != ';' && **pp != '\0'); | |
c5aa993b | 2429 | |
c906108c | 2430 | (*pp)++; |
0c867556 | 2431 | STABS_CONTINUE (pp, objfile); |
c5aa993b | 2432 | |
0c867556 PS |
2433 | /* Skip GCC 3.X member functions which are duplicates of the callable |
2434 | constructor/destructor. */ | |
2435 | if (strcmp (main_fn_name, "__base_ctor") == 0 | |
2436 | || strcmp (main_fn_name, "__base_dtor") == 0 | |
2437 | || strcmp (main_fn_name, "__deleting_dtor") == 0) | |
c906108c | 2438 | { |
0c867556 | 2439 | xfree (main_fn_name); |
c906108c | 2440 | } |
0c867556 PS |
2441 | else |
2442 | { | |
de17c821 DJ |
2443 | int has_stub = 0; |
2444 | int has_destructor = 0, has_other = 0; | |
2445 | int is_v3 = 0; | |
2446 | struct next_fnfield *tmp_sublist; | |
2447 | ||
2448 | /* Various versions of GCC emit various mostly-useless | |
2449 | strings in the name field for special member functions. | |
2450 | ||
2451 | For stub methods, we need to defer correcting the name | |
2452 | until we are ready to unstub the method, because the current | |
2453 | name string is used by gdb_mangle_name. The only stub methods | |
2454 | of concern here are GNU v2 operators; other methods have their | |
2455 | names correct (see caveat below). | |
2456 | ||
2457 | For non-stub methods, in GNU v3, we have a complete physname. | |
2458 | Therefore we can safely correct the name now. This primarily | |
2459 | affects constructors and destructors, whose name will be | |
2460 | __comp_ctor or __comp_dtor instead of Foo or ~Foo. Cast | |
2461 | operators will also have incorrect names; for instance, | |
2462 | "operator int" will be named "operator i" (i.e. the type is | |
2463 | mangled). | |
2464 | ||
2465 | For non-stub methods in GNU v2, we have no easy way to | |
2466 | know if we have a complete physname or not. For most | |
2467 | methods the result depends on the platform (if CPLUS_MARKER | |
2468 | can be `$' or `.', it will use minimal debug information, or | |
2469 | otherwise the full physname will be included). | |
2470 | ||
2471 | Rather than dealing with this, we take a different approach. | |
2472 | For v3 mangled names, we can use the full physname; for v2, | |
2473 | we use cplus_demangle_opname (which is actually v2 specific), | |
2474 | because the only interesting names are all operators - once again | |
2475 | barring the caveat below. Skip this process if any method in the | |
2476 | group is a stub, to prevent our fouling up the workings of | |
2477 | gdb_mangle_name. | |
2478 | ||
2479 | The caveat: GCC 2.95.x (and earlier?) put constructors and | |
2480 | destructors in the same method group. We need to split this | |
2481 | into two groups, because they should have different names. | |
2482 | So for each method group we check whether it contains both | |
2483 | routines whose physname appears to be a destructor (the physnames | |
2484 | for and destructors are always provided, due to quirks in v2 | |
2485 | mangling) and routines whose physname does not appear to be a | |
2486 | destructor. If so then we break up the list into two halves. | |
2487 | Even if the constructors and destructors aren't in the same group | |
2488 | the destructor will still lack the leading tilde, so that also | |
2489 | needs to be fixed. | |
2490 | ||
2491 | So, to summarize what we expect and handle here: | |
2492 | ||
2493 | Given Given Real Real Action | |
2494 | method name physname physname method name | |
2495 | ||
2496 | __opi [none] __opi__3Foo operator int opname | |
2497 | [now or later] | |
2498 | Foo _._3Foo _._3Foo ~Foo separate and | |
2499 | rename | |
2500 | operator i _ZN3FoocviEv _ZN3FoocviEv operator int demangle | |
2501 | __comp_ctor _ZN3FooC1ERKS_ _ZN3FooC1ERKS_ Foo demangle | |
2502 | */ | |
2503 | ||
2504 | tmp_sublist = sublist; | |
2505 | while (tmp_sublist != NULL) | |
2506 | { | |
2507 | if (tmp_sublist->fn_field.is_stub) | |
2508 | has_stub = 1; | |
2509 | if (tmp_sublist->fn_field.physname[0] == '_' | |
2510 | && tmp_sublist->fn_field.physname[1] == 'Z') | |
2511 | is_v3 = 1; | |
2512 | ||
2513 | if (is_destructor_name (tmp_sublist->fn_field.physname)) | |
2514 | has_destructor++; | |
2515 | else | |
2516 | has_other++; | |
2517 | ||
2518 | tmp_sublist = tmp_sublist->next; | |
2519 | } | |
2520 | ||
2521 | if (has_destructor && has_other) | |
2522 | { | |
2523 | struct next_fnfieldlist *destr_fnlist; | |
2524 | struct next_fnfield *last_sublist; | |
2525 | ||
2526 | /* Create a new fn_fieldlist for the destructors. */ | |
2527 | ||
2528 | destr_fnlist = (struct next_fnfieldlist *) | |
2529 | xmalloc (sizeof (struct next_fnfieldlist)); | |
2530 | make_cleanup (xfree, destr_fnlist); | |
2531 | memset (destr_fnlist, 0, sizeof (struct next_fnfieldlist)); | |
2532 | destr_fnlist->fn_fieldlist.name | |
2533 | = obconcat (&objfile->type_obstack, "", "~", | |
2534 | new_fnlist->fn_fieldlist.name); | |
2535 | ||
2536 | destr_fnlist->fn_fieldlist.fn_fields = (struct fn_field *) | |
2537 | obstack_alloc (&objfile->type_obstack, | |
2538 | sizeof (struct fn_field) * has_destructor); | |
2539 | memset (destr_fnlist->fn_fieldlist.fn_fields, 0, | |
2540 | sizeof (struct fn_field) * has_destructor); | |
2541 | tmp_sublist = sublist; | |
2542 | last_sublist = NULL; | |
2543 | i = 0; | |
2544 | while (tmp_sublist != NULL) | |
2545 | { | |
2546 | if (!is_destructor_name (tmp_sublist->fn_field.physname)) | |
2547 | { | |
2548 | tmp_sublist = tmp_sublist->next; | |
2549 | continue; | |
2550 | } | |
2551 | ||
2552 | destr_fnlist->fn_fieldlist.fn_fields[i++] | |
2553 | = tmp_sublist->fn_field; | |
2554 | if (last_sublist) | |
2555 | last_sublist->next = tmp_sublist->next; | |
2556 | else | |
2557 | sublist = tmp_sublist->next; | |
2558 | last_sublist = tmp_sublist; | |
2559 | tmp_sublist = tmp_sublist->next; | |
2560 | } | |
2561 | ||
2562 | destr_fnlist->fn_fieldlist.length = has_destructor; | |
2563 | destr_fnlist->next = fip->fnlist; | |
2564 | fip->fnlist = destr_fnlist; | |
2565 | nfn_fields++; | |
2566 | total_length += has_destructor; | |
2567 | length -= has_destructor; | |
2568 | } | |
2569 | else if (is_v3) | |
2570 | { | |
2571 | /* v3 mangling prevents the use of abbreviated physnames, | |
2572 | so we can do this here. There are stubbed methods in v3 | |
2573 | only: | |
2574 | - in -gstabs instead of -gstabs+ | |
2575 | - or for static methods, which are output as a function type | |
2576 | instead of a method type. */ | |
2577 | ||
2578 | update_method_name_from_physname (&new_fnlist->fn_fieldlist.name, | |
2579 | sublist->fn_field.physname); | |
2580 | } | |
2581 | else if (has_destructor && new_fnlist->fn_fieldlist.name[0] != '~') | |
2582 | { | |
2583 | new_fnlist->fn_fieldlist.name = concat ("~", main_fn_name, NULL); | |
2584 | xfree (main_fn_name); | |
2585 | } | |
2586 | else if (!has_stub) | |
2587 | { | |
2588 | char dem_opname[256]; | |
2589 | int ret; | |
2590 | ret = cplus_demangle_opname (new_fnlist->fn_fieldlist.name, | |
2591 | dem_opname, DMGL_ANSI); | |
2592 | if (!ret) | |
2593 | ret = cplus_demangle_opname (new_fnlist->fn_fieldlist.name, | |
2594 | dem_opname, 0); | |
2595 | if (ret) | |
2596 | new_fnlist->fn_fieldlist.name | |
2597 | = obsavestring (dem_opname, strlen (dem_opname), | |
2598 | &objfile->type_obstack); | |
2599 | } | |
2600 | ||
0c867556 PS |
2601 | new_fnlist->fn_fieldlist.fn_fields = (struct fn_field *) |
2602 | obstack_alloc (&objfile->type_obstack, | |
2603 | sizeof (struct fn_field) * length); | |
2604 | memset (new_fnlist->fn_fieldlist.fn_fields, 0, | |
2605 | sizeof (struct fn_field) * length); | |
2606 | for (i = length; (i--, sublist); sublist = sublist->next) | |
2607 | { | |
2608 | new_fnlist->fn_fieldlist.fn_fields[i] = sublist->fn_field; | |
2609 | } | |
c5aa993b | 2610 | |
0c867556 PS |
2611 | new_fnlist->fn_fieldlist.length = length; |
2612 | new_fnlist->next = fip->fnlist; | |
2613 | fip->fnlist = new_fnlist; | |
2614 | nfn_fields++; | |
2615 | total_length += length; | |
2616 | } | |
c906108c SS |
2617 | } |
2618 | ||
2619 | if (nfn_fields) | |
2620 | { | |
2621 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
2622 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
2623 | TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * nfn_fields); | |
2624 | memset (TYPE_FN_FIELDLISTS (type), 0, | |
2625 | sizeof (struct fn_fieldlist) * nfn_fields); | |
2626 | TYPE_NFN_FIELDS (type) = nfn_fields; | |
2627 | TYPE_NFN_FIELDS_TOTAL (type) = total_length; | |
2628 | } | |
2629 | ||
2630 | return 1; | |
2631 | } | |
2632 | ||
2633 | /* Special GNU C++ name. | |
2634 | ||
2635 | Returns 1 for success, 0 for failure. "failure" means that we can't | |
2636 | keep parsing and it's time for error_type(). */ | |
2637 | ||
2638 | static int | |
fba45db2 KB |
2639 | read_cpp_abbrev (struct field_info *fip, char **pp, struct type *type, |
2640 | struct objfile *objfile) | |
c906108c | 2641 | { |
52f0bd74 | 2642 | char *p; |
c906108c SS |
2643 | char *name; |
2644 | char cpp_abbrev; | |
2645 | struct type *context; | |
2646 | ||
2647 | p = *pp; | |
2648 | if (*++p == 'v') | |
2649 | { | |
2650 | name = NULL; | |
2651 | cpp_abbrev = *++p; | |
2652 | ||
2653 | *pp = p + 1; | |
2654 | ||
2655 | /* At this point, *pp points to something like "22:23=*22...", | |
c5aa993b JM |
2656 | where the type number before the ':' is the "context" and |
2657 | everything after is a regular type definition. Lookup the | |
2658 | type, find it's name, and construct the field name. */ | |
c906108c SS |
2659 | |
2660 | context = read_type (pp, objfile); | |
2661 | ||
2662 | switch (cpp_abbrev) | |
2663 | { | |
c5aa993b | 2664 | case 'f': /* $vf -- a virtual function table pointer */ |
c2bd2ed9 JB |
2665 | name = type_name_no_tag (context); |
2666 | if (name == NULL) | |
2667 | { | |
2668 | name = ""; | |
2669 | } | |
c5aa993b | 2670 | fip->list->field.name = |
c2bd2ed9 | 2671 | obconcat (&objfile->type_obstack, vptr_name, name, ""); |
c5aa993b | 2672 | break; |
c906108c | 2673 | |
c5aa993b JM |
2674 | case 'b': /* $vb -- a virtual bsomethingorother */ |
2675 | name = type_name_no_tag (context); | |
2676 | if (name == NULL) | |
2677 | { | |
23136709 KB |
2678 | complaint (&symfile_complaints, |
2679 | "C++ abbreviated type name unknown at symtab pos %d", | |
2680 | symnum); | |
c5aa993b JM |
2681 | name = "FOO"; |
2682 | } | |
2683 | fip->list->field.name = | |
2684 | obconcat (&objfile->type_obstack, vb_name, name, ""); | |
2685 | break; | |
c906108c | 2686 | |
c5aa993b | 2687 | default: |
23136709 | 2688 | invalid_cpp_abbrev_complaint (*pp); |
c5aa993b JM |
2689 | fip->list->field.name = |
2690 | obconcat (&objfile->type_obstack, | |
2691 | "INVALID_CPLUSPLUS_ABBREV", "", ""); | |
2692 | break; | |
c906108c SS |
2693 | } |
2694 | ||
2695 | /* At this point, *pp points to the ':'. Skip it and read the | |
c5aa993b | 2696 | field type. */ |
c906108c SS |
2697 | |
2698 | p = ++(*pp); | |
2699 | if (p[-1] != ':') | |
2700 | { | |
23136709 | 2701 | invalid_cpp_abbrev_complaint (*pp); |
c906108c SS |
2702 | return 0; |
2703 | } | |
2704 | fip->list->field.type = read_type (pp, objfile); | |
2705 | if (**pp == ',') | |
c5aa993b | 2706 | (*pp)++; /* Skip the comma. */ |
c906108c SS |
2707 | else |
2708 | return 0; | |
2709 | ||
2710 | { | |
2711 | int nbits; | |
2712 | FIELD_BITPOS (fip->list->field) = read_huge_number (pp, ';', &nbits); | |
2713 | if (nbits != 0) | |
2714 | return 0; | |
2715 | } | |
2716 | /* This field is unpacked. */ | |
2717 | FIELD_BITSIZE (fip->list->field) = 0; | |
2718 | fip->list->visibility = VISIBILITY_PRIVATE; | |
2719 | } | |
2720 | else | |
2721 | { | |
23136709 | 2722 | invalid_cpp_abbrev_complaint (*pp); |
c906108c | 2723 | /* We have no idea what syntax an unrecognized abbrev would have, so |
c5aa993b JM |
2724 | better return 0. If we returned 1, we would need to at least advance |
2725 | *pp to avoid an infinite loop. */ | |
c906108c SS |
2726 | return 0; |
2727 | } | |
2728 | return 1; | |
2729 | } | |
2730 | ||
2731 | static void | |
fba45db2 KB |
2732 | read_one_struct_field (struct field_info *fip, char **pp, char *p, |
2733 | struct type *type, struct objfile *objfile) | |
c906108c | 2734 | { |
41989fcd AC |
2735 | fip->list->field.name = |
2736 | obsavestring (*pp, p - *pp, &objfile->type_obstack); | |
c906108c SS |
2737 | *pp = p + 1; |
2738 | ||
2739 | /* This means we have a visibility for a field coming. */ | |
2740 | if (**pp == '/') | |
2741 | { | |
2742 | (*pp)++; | |
c5aa993b | 2743 | fip->list->visibility = *(*pp)++; |
c906108c SS |
2744 | } |
2745 | else | |
2746 | { | |
2747 | /* normal dbx-style format, no explicit visibility */ | |
c5aa993b | 2748 | fip->list->visibility = VISIBILITY_PUBLIC; |
c906108c SS |
2749 | } |
2750 | ||
c5aa993b | 2751 | fip->list->field.type = read_type (pp, objfile); |
c906108c SS |
2752 | if (**pp == ':') |
2753 | { | |
2754 | p = ++(*pp); | |
2755 | #if 0 | |
2756 | /* Possible future hook for nested types. */ | |
2757 | if (**pp == '!') | |
2758 | { | |
c5aa993b | 2759 | fip->list->field.bitpos = (long) -2; /* nested type */ |
c906108c SS |
2760 | p = ++(*pp); |
2761 | } | |
c5aa993b JM |
2762 | else |
2763 | ...; | |
c906108c | 2764 | #endif |
c5aa993b | 2765 | while (*p != ';') |
c906108c SS |
2766 | { |
2767 | p++; | |
2768 | } | |
2769 | /* Static class member. */ | |
2770 | SET_FIELD_PHYSNAME (fip->list->field, savestring (*pp, p - *pp)); | |
2771 | *pp = p + 1; | |
2772 | return; | |
2773 | } | |
2774 | else if (**pp != ',') | |
2775 | { | |
2776 | /* Bad structure-type format. */ | |
23136709 | 2777 | stabs_general_complaint ("bad structure-type format"); |
c906108c SS |
2778 | return; |
2779 | } | |
2780 | ||
2781 | (*pp)++; /* Skip the comma. */ | |
2782 | ||
2783 | { | |
2784 | int nbits; | |
2785 | FIELD_BITPOS (fip->list->field) = read_huge_number (pp, ',', &nbits); | |
2786 | if (nbits != 0) | |
2787 | { | |
23136709 | 2788 | stabs_general_complaint ("bad structure-type format"); |
c906108c SS |
2789 | return; |
2790 | } | |
2791 | FIELD_BITSIZE (fip->list->field) = read_huge_number (pp, ';', &nbits); | |
2792 | if (nbits != 0) | |
2793 | { | |
23136709 | 2794 | stabs_general_complaint ("bad structure-type format"); |
c906108c SS |
2795 | return; |
2796 | } | |
2797 | } | |
2798 | ||
2799 | if (FIELD_BITPOS (fip->list->field) == 0 | |
2800 | && FIELD_BITSIZE (fip->list->field) == 0) | |
2801 | { | |
2802 | /* This can happen in two cases: (1) at least for gcc 2.4.5 or so, | |
c5aa993b JM |
2803 | it is a field which has been optimized out. The correct stab for |
2804 | this case is to use VISIBILITY_IGNORE, but that is a recent | |
2805 | invention. (2) It is a 0-size array. For example | |
2806 | union { int num; char str[0]; } foo. Printing "<no value>" for | |
2807 | str in "p foo" is OK, since foo.str (and thus foo.str[3]) | |
2808 | will continue to work, and a 0-size array as a whole doesn't | |
2809 | have any contents to print. | |
2810 | ||
2811 | I suspect this probably could also happen with gcc -gstabs (not | |
2812 | -gstabs+) for static fields, and perhaps other C++ extensions. | |
2813 | Hopefully few people use -gstabs with gdb, since it is intended | |
2814 | for dbx compatibility. */ | |
c906108c SS |
2815 | |
2816 | /* Ignore this field. */ | |
c5aa993b | 2817 | fip->list->visibility = VISIBILITY_IGNORE; |
c906108c SS |
2818 | } |
2819 | else | |
2820 | { | |
2821 | /* Detect an unpacked field and mark it as such. | |
c5aa993b JM |
2822 | dbx gives a bit size for all fields. |
2823 | Note that forward refs cannot be packed, | |
2824 | and treat enums as if they had the width of ints. */ | |
c906108c SS |
2825 | |
2826 | struct type *field_type = check_typedef (FIELD_TYPE (fip->list->field)); | |
2827 | ||
2828 | if (TYPE_CODE (field_type) != TYPE_CODE_INT | |
2829 | && TYPE_CODE (field_type) != TYPE_CODE_RANGE | |
2830 | && TYPE_CODE (field_type) != TYPE_CODE_BOOL | |
2831 | && TYPE_CODE (field_type) != TYPE_CODE_ENUM) | |
2832 | { | |
2833 | FIELD_BITSIZE (fip->list->field) = 0; | |
2834 | } | |
c5aa993b | 2835 | if ((FIELD_BITSIZE (fip->list->field) |
c906108c SS |
2836 | == TARGET_CHAR_BIT * TYPE_LENGTH (field_type) |
2837 | || (TYPE_CODE (field_type) == TYPE_CODE_ENUM | |
c5aa993b JM |
2838 | && FIELD_BITSIZE (fip->list->field) == TARGET_INT_BIT) |
2839 | ) | |
c906108c SS |
2840 | && |
2841 | FIELD_BITPOS (fip->list->field) % 8 == 0) | |
2842 | { | |
2843 | FIELD_BITSIZE (fip->list->field) = 0; | |
2844 | } | |
2845 | } | |
2846 | } | |
2847 | ||
2848 | ||
2849 | /* Read struct or class data fields. They have the form: | |
2850 | ||
c5aa993b | 2851 | NAME : [VISIBILITY] TYPENUM , BITPOS , BITSIZE ; |
c906108c SS |
2852 | |
2853 | At the end, we see a semicolon instead of a field. | |
2854 | ||
2855 | In C++, this may wind up being NAME:?TYPENUM:PHYSNAME; for | |
2856 | a static field. | |
2857 | ||
2858 | The optional VISIBILITY is one of: | |
2859 | ||
c5aa993b JM |
2860 | '/0' (VISIBILITY_PRIVATE) |
2861 | '/1' (VISIBILITY_PROTECTED) | |
2862 | '/2' (VISIBILITY_PUBLIC) | |
2863 | '/9' (VISIBILITY_IGNORE) | |
c906108c SS |
2864 | |
2865 | or nothing, for C style fields with public visibility. | |
2866 | ||
2867 | Returns 1 for success, 0 for failure. */ | |
2868 | ||
2869 | static int | |
fba45db2 KB |
2870 | read_struct_fields (struct field_info *fip, char **pp, struct type *type, |
2871 | struct objfile *objfile) | |
c906108c | 2872 | { |
52f0bd74 | 2873 | char *p; |
c906108c SS |
2874 | struct nextfield *new; |
2875 | ||
2876 | /* We better set p right now, in case there are no fields at all... */ | |
2877 | ||
2878 | p = *pp; | |
2879 | ||
2880 | /* Read each data member type until we find the terminating ';' at the end of | |
2881 | the data member list, or break for some other reason such as finding the | |
2882 | start of the member function list. */ | |
fedbd091 EZ |
2883 | /* Stab string for structure/union does not end with two ';' in |
2884 | SUN C compiler 5.3 i.e. F6U2, hence check for end of string. */ | |
c906108c | 2885 | |
fedbd091 | 2886 | while (**pp != ';' && **pp != '\0') |
c906108c | 2887 | { |
c906108c SS |
2888 | STABS_CONTINUE (pp, objfile); |
2889 | /* Get space to record the next field's data. */ | |
2890 | new = (struct nextfield *) xmalloc (sizeof (struct nextfield)); | |
b8c9b27d | 2891 | make_cleanup (xfree, new); |
c906108c | 2892 | memset (new, 0, sizeof (struct nextfield)); |
c5aa993b JM |
2893 | new->next = fip->list; |
2894 | fip->list = new; | |
c906108c SS |
2895 | |
2896 | /* Get the field name. */ | |
2897 | p = *pp; | |
2898 | ||
2899 | /* If is starts with CPLUS_MARKER it is a special abbreviation, | |
c5aa993b JM |
2900 | unless the CPLUS_MARKER is followed by an underscore, in |
2901 | which case it is just the name of an anonymous type, which we | |
2902 | should handle like any other type name. */ | |
c906108c SS |
2903 | |
2904 | if (is_cplus_marker (p[0]) && p[1] != '_') | |
2905 | { | |
2906 | if (!read_cpp_abbrev (fip, pp, type, objfile)) | |
2907 | return 0; | |
2908 | continue; | |
2909 | } | |
2910 | ||
2911 | /* Look for the ':' that separates the field name from the field | |
c5aa993b JM |
2912 | values. Data members are delimited by a single ':', while member |
2913 | functions are delimited by a pair of ':'s. When we hit the member | |
2914 | functions (if any), terminate scan loop and return. */ | |
c906108c | 2915 | |
c5aa993b | 2916 | while (*p != ':' && *p != '\0') |
c906108c SS |
2917 | { |
2918 | p++; | |
2919 | } | |
2920 | if (*p == '\0') | |
2921 | return 0; | |
2922 | ||
2923 | /* Check to see if we have hit the member functions yet. */ | |
2924 | if (p[1] == ':') | |
2925 | { | |
2926 | break; | |
2927 | } | |
2928 | read_one_struct_field (fip, pp, p, type, objfile); | |
2929 | } | |
2930 | if (p[0] == ':' && p[1] == ':') | |
2931 | { | |
1b831c93 AC |
2932 | /* (the deleted) chill the list of fields: the last entry (at |
2933 | the head) is a partially constructed entry which we now | |
2934 | scrub. */ | |
c5aa993b | 2935 | fip->list = fip->list->next; |
c906108c SS |
2936 | } |
2937 | return 1; | |
2938 | } | |
9846de1b | 2939 | /* *INDENT-OFF* */ |
c906108c SS |
2940 | /* The stabs for C++ derived classes contain baseclass information which |
2941 | is marked by a '!' character after the total size. This function is | |
2942 | called when we encounter the baseclass marker, and slurps up all the | |
2943 | baseclass information. | |
2944 | ||
2945 | Immediately following the '!' marker is the number of base classes that | |
2946 | the class is derived from, followed by information for each base class. | |
2947 | For each base class, there are two visibility specifiers, a bit offset | |
2948 | to the base class information within the derived class, a reference to | |
2949 | the type for the base class, and a terminating semicolon. | |
2950 | ||
2951 | A typical example, with two base classes, would be "!2,020,19;0264,21;". | |
2952 | ^^ ^ ^ ^ ^ ^ ^ | |
2953 | Baseclass information marker __________________|| | | | | | | | |
2954 | Number of baseclasses __________________________| | | | | | | | |
2955 | Visibility specifiers (2) ________________________| | | | | | | |
2956 | Offset in bits from start of class _________________| | | | | | |
2957 | Type number for base class ___________________________| | | | | |
2958 | Visibility specifiers (2) _______________________________| | | | |
2959 | Offset in bits from start of class ________________________| | | |
2960 | Type number of base class ____________________________________| | |
2961 | ||
2962 | Return 1 for success, 0 for (error-type-inducing) failure. */ | |
9846de1b | 2963 | /* *INDENT-ON* */ |
c906108c | 2964 | |
c5aa993b JM |
2965 | |
2966 | ||
c906108c | 2967 | static int |
fba45db2 KB |
2968 | read_baseclasses (struct field_info *fip, char **pp, struct type *type, |
2969 | struct objfile *objfile) | |
c906108c SS |
2970 | { |
2971 | int i; | |
2972 | struct nextfield *new; | |
2973 | ||
2974 | if (**pp != '!') | |
2975 | { | |
2976 | return 1; | |
2977 | } | |
2978 | else | |
2979 | { | |
2980 | /* Skip the '!' baseclass information marker. */ | |
2981 | (*pp)++; | |
2982 | } | |
2983 | ||
2984 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
2985 | { | |
2986 | int nbits; | |
2987 | TYPE_N_BASECLASSES (type) = read_huge_number (pp, ',', &nbits); | |
2988 | if (nbits != 0) | |
2989 | return 0; | |
2990 | } | |
2991 | ||
2992 | #if 0 | |
2993 | /* Some stupid compilers have trouble with the following, so break | |
2994 | it up into simpler expressions. */ | |
2995 | TYPE_FIELD_VIRTUAL_BITS (type) = (B_TYPE *) | |
2996 | TYPE_ALLOC (type, B_BYTES (TYPE_N_BASECLASSES (type))); | |
2997 | #else | |
2998 | { | |
2999 | int num_bytes = B_BYTES (TYPE_N_BASECLASSES (type)); | |
3000 | char *pointer; | |
3001 | ||
3002 | pointer = (char *) TYPE_ALLOC (type, num_bytes); | |
3003 | TYPE_FIELD_VIRTUAL_BITS (type) = (B_TYPE *) pointer; | |
3004 | } | |
3005 | #endif /* 0 */ | |
3006 | ||
3007 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), TYPE_N_BASECLASSES (type)); | |
3008 | ||
3009 | for (i = 0; i < TYPE_N_BASECLASSES (type); i++) | |
3010 | { | |
3011 | new = (struct nextfield *) xmalloc (sizeof (struct nextfield)); | |
b8c9b27d | 3012 | make_cleanup (xfree, new); |
c906108c | 3013 | memset (new, 0, sizeof (struct nextfield)); |
c5aa993b JM |
3014 | new->next = fip->list; |
3015 | fip->list = new; | |
c906108c SS |
3016 | FIELD_BITSIZE (new->field) = 0; /* this should be an unpacked field! */ |
3017 | ||
3018 | STABS_CONTINUE (pp, objfile); | |
3019 | switch (**pp) | |
3020 | { | |
c5aa993b JM |
3021 | case '0': |
3022 | /* Nothing to do. */ | |
3023 | break; | |
3024 | case '1': | |
3025 | SET_TYPE_FIELD_VIRTUAL (type, i); | |
3026 | break; | |
3027 | default: | |
3028 | /* Unknown character. Complain and treat it as non-virtual. */ | |
3029 | { | |
23136709 KB |
3030 | complaint (&symfile_complaints, |
3031 | "Unknown virtual character `%c' for baseclass", **pp); | |
c5aa993b | 3032 | } |
c906108c SS |
3033 | } |
3034 | ++(*pp); | |
3035 | ||
c5aa993b JM |
3036 | new->visibility = *(*pp)++; |
3037 | switch (new->visibility) | |
c906108c | 3038 | { |
c5aa993b JM |
3039 | case VISIBILITY_PRIVATE: |
3040 | case VISIBILITY_PROTECTED: | |
3041 | case VISIBILITY_PUBLIC: | |
3042 | break; | |
3043 | default: | |
3044 | /* Bad visibility format. Complain and treat it as | |
3045 | public. */ | |
3046 | { | |
23136709 KB |
3047 | complaint (&symfile_complaints, |
3048 | "Unknown visibility `%c' for baseclass", | |
3049 | new->visibility); | |
c5aa993b JM |
3050 | new->visibility = VISIBILITY_PUBLIC; |
3051 | } | |
c906108c SS |
3052 | } |
3053 | ||
3054 | { | |
3055 | int nbits; | |
c5aa993b | 3056 | |
c906108c SS |
3057 | /* The remaining value is the bit offset of the portion of the object |
3058 | corresponding to this baseclass. Always zero in the absence of | |
3059 | multiple inheritance. */ | |
3060 | ||
3061 | FIELD_BITPOS (new->field) = read_huge_number (pp, ',', &nbits); | |
3062 | if (nbits != 0) | |
3063 | return 0; | |
3064 | } | |
3065 | ||
3066 | /* The last piece of baseclass information is the type of the | |
c5aa993b JM |
3067 | base class. Read it, and remember it's type name as this |
3068 | field's name. */ | |
c906108c | 3069 | |
c5aa993b JM |
3070 | new->field.type = read_type (pp, objfile); |
3071 | new->field.name = type_name_no_tag (new->field.type); | |
c906108c SS |
3072 | |
3073 | /* skip trailing ';' and bump count of number of fields seen */ | |
3074 | if (**pp == ';') | |
3075 | (*pp)++; | |
3076 | else | |
3077 | return 0; | |
3078 | } | |
3079 | return 1; | |
3080 | } | |
3081 | ||
3082 | /* The tail end of stabs for C++ classes that contain a virtual function | |
3083 | pointer contains a tilde, a %, and a type number. | |
3084 | The type number refers to the base class (possibly this class itself) which | |
3085 | contains the vtable pointer for the current class. | |
3086 | ||
3087 | This function is called when we have parsed all the method declarations, | |
3088 | so we can look for the vptr base class info. */ | |
3089 | ||
3090 | static int | |
fba45db2 KB |
3091 | read_tilde_fields (struct field_info *fip, char **pp, struct type *type, |
3092 | struct objfile *objfile) | |
c906108c | 3093 | { |
52f0bd74 | 3094 | char *p; |
c906108c SS |
3095 | |
3096 | STABS_CONTINUE (pp, objfile); | |
3097 | ||
3098 | /* If we are positioned at a ';', then skip it. */ | |
3099 | if (**pp == ';') | |
3100 | { | |
3101 | (*pp)++; | |
3102 | } | |
3103 | ||
3104 | if (**pp == '~') | |
3105 | { | |
3106 | (*pp)++; | |
3107 | ||
3108 | if (**pp == '=' || **pp == '+' || **pp == '-') | |
3109 | { | |
3110 | /* Obsolete flags that used to indicate the presence | |
3111 | of constructors and/or destructors. */ | |
3112 | (*pp)++; | |
3113 | } | |
3114 | ||
3115 | /* Read either a '%' or the final ';'. */ | |
3116 | if (*(*pp)++ == '%') | |
3117 | { | |
3118 | /* The next number is the type number of the base class | |
3119 | (possibly our own class) which supplies the vtable for | |
3120 | this class. Parse it out, and search that class to find | |
3121 | its vtable pointer, and install those into TYPE_VPTR_BASETYPE | |
3122 | and TYPE_VPTR_FIELDNO. */ | |
3123 | ||
3124 | struct type *t; | |
3125 | int i; | |
3126 | ||
3127 | t = read_type (pp, objfile); | |
3128 | p = (*pp)++; | |
3129 | while (*p != '\0' && *p != ';') | |
3130 | { | |
3131 | p++; | |
3132 | } | |
3133 | if (*p == '\0') | |
3134 | { | |
3135 | /* Premature end of symbol. */ | |
3136 | return 0; | |
3137 | } | |
c5aa993b | 3138 | |
c906108c | 3139 | TYPE_VPTR_BASETYPE (type) = t; |
c5aa993b | 3140 | if (type == t) /* Our own class provides vtbl ptr */ |
c906108c SS |
3141 | { |
3142 | for (i = TYPE_NFIELDS (t) - 1; | |
3143 | i >= TYPE_N_BASECLASSES (t); | |
3144 | --i) | |
3145 | { | |
8343f86c DJ |
3146 | char *name = TYPE_FIELD_NAME (t, i); |
3147 | if (!strncmp (name, vptr_name, sizeof (vptr_name) - 2) | |
74451869 | 3148 | && is_cplus_marker (name[sizeof (vptr_name) - 2])) |
c906108c SS |
3149 | { |
3150 | TYPE_VPTR_FIELDNO (type) = i; | |
3151 | goto gotit; | |
3152 | } | |
3153 | } | |
3154 | /* Virtual function table field not found. */ | |
23136709 KB |
3155 | complaint (&symfile_complaints, |
3156 | "virtual function table pointer not found when defining class `%s'", | |
3157 | TYPE_NAME (type)); | |
c906108c SS |
3158 | return 0; |
3159 | } | |
3160 | else | |
3161 | { | |
3162 | TYPE_VPTR_FIELDNO (type) = TYPE_VPTR_FIELDNO (t); | |
3163 | } | |
3164 | ||
c5aa993b | 3165 | gotit: |
c906108c SS |
3166 | *pp = p + 1; |
3167 | } | |
3168 | } | |
3169 | return 1; | |
3170 | } | |
3171 | ||
3172 | static int | |
aa1ee363 | 3173 | attach_fn_fields_to_type (struct field_info *fip, struct type *type) |
c906108c | 3174 | { |
52f0bd74 | 3175 | int n; |
c906108c SS |
3176 | |
3177 | for (n = TYPE_NFN_FIELDS (type); | |
c5aa993b JM |
3178 | fip->fnlist != NULL; |
3179 | fip->fnlist = fip->fnlist->next) | |
c906108c | 3180 | { |
c5aa993b JM |
3181 | --n; /* Circumvent Sun3 compiler bug */ |
3182 | TYPE_FN_FIELDLISTS (type)[n] = fip->fnlist->fn_fieldlist; | |
c906108c SS |
3183 | } |
3184 | return 1; | |
3185 | } | |
3186 | ||
c906108c SS |
3187 | /* Create the vector of fields, and record how big it is. |
3188 | We need this info to record proper virtual function table information | |
3189 | for this class's virtual functions. */ | |
3190 | ||
3191 | static int | |
aa1ee363 | 3192 | attach_fields_to_type (struct field_info *fip, struct type *type, |
fba45db2 | 3193 | struct objfile *objfile) |
c906108c | 3194 | { |
52f0bd74 AC |
3195 | int nfields = 0; |
3196 | int non_public_fields = 0; | |
3197 | struct nextfield *scan; | |
c906108c SS |
3198 | |
3199 | /* Count up the number of fields that we have, as well as taking note of | |
3200 | whether or not there are any non-public fields, which requires us to | |
3201 | allocate and build the private_field_bits and protected_field_bits | |
3202 | bitfields. */ | |
3203 | ||
c5aa993b | 3204 | for (scan = fip->list; scan != NULL; scan = scan->next) |
c906108c SS |
3205 | { |
3206 | nfields++; | |
c5aa993b | 3207 | if (scan->visibility != VISIBILITY_PUBLIC) |
c906108c SS |
3208 | { |
3209 | non_public_fields++; | |
3210 | } | |
3211 | } | |
3212 | ||
3213 | /* Now we know how many fields there are, and whether or not there are any | |
3214 | non-public fields. Record the field count, allocate space for the | |
3215 | array of fields, and create blank visibility bitfields if necessary. */ | |
3216 | ||
3217 | TYPE_NFIELDS (type) = nfields; | |
3218 | TYPE_FIELDS (type) = (struct field *) | |
3219 | TYPE_ALLOC (type, sizeof (struct field) * nfields); | |
3220 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields); | |
3221 | ||
3222 | if (non_public_fields) | |
3223 | { | |
3224 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
3225 | ||
3226 | TYPE_FIELD_PRIVATE_BITS (type) = | |
3227 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
3228 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
3229 | ||
3230 | TYPE_FIELD_PROTECTED_BITS (type) = | |
3231 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
3232 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
3233 | ||
3234 | TYPE_FIELD_IGNORE_BITS (type) = | |
3235 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
3236 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
3237 | } | |
3238 | ||
3239 | /* Copy the saved-up fields into the field vector. Start from the head | |
3240 | of the list, adding to the tail of the field array, so that they end | |
3241 | up in the same order in the array in which they were added to the list. */ | |
3242 | ||
3243 | while (nfields-- > 0) | |
3244 | { | |
c5aa993b JM |
3245 | TYPE_FIELD (type, nfields) = fip->list->field; |
3246 | switch (fip->list->visibility) | |
c906108c | 3247 | { |
c5aa993b JM |
3248 | case VISIBILITY_PRIVATE: |
3249 | SET_TYPE_FIELD_PRIVATE (type, nfields); | |
3250 | break; | |
c906108c | 3251 | |
c5aa993b JM |
3252 | case VISIBILITY_PROTECTED: |
3253 | SET_TYPE_FIELD_PROTECTED (type, nfields); | |
3254 | break; | |
c906108c | 3255 | |
c5aa993b JM |
3256 | case VISIBILITY_IGNORE: |
3257 | SET_TYPE_FIELD_IGNORE (type, nfields); | |
3258 | break; | |
c906108c | 3259 | |
c5aa993b JM |
3260 | case VISIBILITY_PUBLIC: |
3261 | break; | |
c906108c | 3262 | |
c5aa993b JM |
3263 | default: |
3264 | /* Unknown visibility. Complain and treat it as public. */ | |
3265 | { | |
23136709 KB |
3266 | complaint (&symfile_complaints, "Unknown visibility `%c' for field", |
3267 | fip->list->visibility); | |
c5aa993b JM |
3268 | } |
3269 | break; | |
c906108c | 3270 | } |
c5aa993b | 3271 | fip->list = fip->list->next; |
c906108c SS |
3272 | } |
3273 | return 1; | |
3274 | } | |
3275 | ||
2ae1c2d2 | 3276 | |
2ae1c2d2 JB |
3277 | /* Complain that the compiler has emitted more than one definition for the |
3278 | structure type TYPE. */ | |
3279 | static void | |
3280 | complain_about_struct_wipeout (struct type *type) | |
3281 | { | |
3282 | char *name = ""; | |
3283 | char *kind = ""; | |
3284 | ||
3285 | if (TYPE_TAG_NAME (type)) | |
3286 | { | |
3287 | name = TYPE_TAG_NAME (type); | |
3288 | switch (TYPE_CODE (type)) | |
3289 | { | |
3290 | case TYPE_CODE_STRUCT: kind = "struct "; break; | |
3291 | case TYPE_CODE_UNION: kind = "union "; break; | |
3292 | case TYPE_CODE_ENUM: kind = "enum "; break; | |
3293 | default: kind = ""; | |
3294 | } | |
3295 | } | |
3296 | else if (TYPE_NAME (type)) | |
3297 | { | |
3298 | name = TYPE_NAME (type); | |
3299 | kind = ""; | |
3300 | } | |
3301 | else | |
3302 | { | |
3303 | name = "<unknown>"; | |
3304 | kind = ""; | |
3305 | } | |
3306 | ||
23136709 KB |
3307 | complaint (&symfile_complaints, |
3308 | "struct/union type gets multiply defined: %s%s", kind, name); | |
2ae1c2d2 JB |
3309 | } |
3310 | ||
3311 | ||
c906108c SS |
3312 | /* Read the description of a structure (or union type) and return an object |
3313 | describing the type. | |
3314 | ||
3315 | PP points to a character pointer that points to the next unconsumed token | |
3316 | in the the stabs string. For example, given stabs "A:T4=s4a:1,0,32;;", | |
3317 | *PP will point to "4a:1,0,32;;". | |
3318 | ||
3319 | TYPE points to an incomplete type that needs to be filled in. | |
3320 | ||
3321 | OBJFILE points to the current objfile from which the stabs information is | |
3322 | being read. (Note that it is redundant in that TYPE also contains a pointer | |
3323 | to this same objfile, so it might be a good idea to eliminate it. FIXME). | |
c5aa993b | 3324 | */ |
c906108c SS |
3325 | |
3326 | static struct type * | |
2ae1c2d2 JB |
3327 | read_struct_type (char **pp, struct type *type, enum type_code type_code, |
3328 | struct objfile *objfile) | |
c906108c SS |
3329 | { |
3330 | struct cleanup *back_to; | |
3331 | struct field_info fi; | |
3332 | ||
3333 | fi.list = NULL; | |
3334 | fi.fnlist = NULL; | |
3335 | ||
2ae1c2d2 JB |
3336 | /* When describing struct/union/class types in stabs, G++ always drops |
3337 | all qualifications from the name. So if you've got: | |
3338 | struct A { ... struct B { ... }; ... }; | |
3339 | then G++ will emit stabs for `struct A::B' that call it simply | |
3340 | `struct B'. Obviously, if you've got a real top-level definition for | |
3341 | `struct B', or other nested definitions, this is going to cause | |
3342 | problems. | |
3343 | ||
3344 | Obviously, GDB can't fix this by itself, but it can at least avoid | |
3345 | scribbling on existing structure type objects when new definitions | |
3346 | appear. */ | |
3347 | if (! (TYPE_CODE (type) == TYPE_CODE_UNDEF | |
3348 | || TYPE_STUB (type))) | |
3349 | { | |
3350 | complain_about_struct_wipeout (type); | |
3351 | ||
3352 | /* It's probably best to return the type unchanged. */ | |
3353 | return type; | |
3354 | } | |
3355 | ||
c906108c SS |
3356 | back_to = make_cleanup (null_cleanup, 0); |
3357 | ||
3358 | INIT_CPLUS_SPECIFIC (type); | |
2ae1c2d2 | 3359 | TYPE_CODE (type) = type_code; |
c906108c SS |
3360 | TYPE_FLAGS (type) &= ~TYPE_FLAG_STUB; |
3361 | ||
3362 | /* First comes the total size in bytes. */ | |
3363 | ||
3364 | { | |
3365 | int nbits; | |
3366 | TYPE_LENGTH (type) = read_huge_number (pp, 0, &nbits); | |
3367 | if (nbits != 0) | |
3368 | return error_type (pp, objfile); | |
3369 | } | |
3370 | ||
3371 | /* Now read the baseclasses, if any, read the regular C struct or C++ | |
3372 | class member fields, attach the fields to the type, read the C++ | |
3373 | member functions, attach them to the type, and then read any tilde | |
3374 | field (baseclass specifier for the class holding the main vtable). */ | |
3375 | ||
3376 | if (!read_baseclasses (&fi, pp, type, objfile) | |
3377 | || !read_struct_fields (&fi, pp, type, objfile) | |
3378 | || !attach_fields_to_type (&fi, type, objfile) | |
3379 | || !read_member_functions (&fi, pp, type, objfile) | |
3380 | || !attach_fn_fields_to_type (&fi, type) | |
3381 | || !read_tilde_fields (&fi, pp, type, objfile)) | |
3382 | { | |
3383 | type = error_type (pp, objfile); | |
3384 | } | |
3385 | ||
3386 | do_cleanups (back_to); | |
3387 | return (type); | |
3388 | } | |
3389 | ||
3390 | /* Read a definition of an array type, | |
3391 | and create and return a suitable type object. | |
3392 | Also creates a range type which represents the bounds of that | |
3393 | array. */ | |
3394 | ||
3395 | static struct type * | |
aa1ee363 | 3396 | read_array_type (char **pp, struct type *type, |
fba45db2 | 3397 | struct objfile *objfile) |
c906108c SS |
3398 | { |
3399 | struct type *index_type, *element_type, *range_type; | |
3400 | int lower, upper; | |
3401 | int adjustable = 0; | |
3402 | int nbits; | |
3403 | ||
3404 | /* Format of an array type: | |
3405 | "ar<index type>;lower;upper;<array_contents_type>". | |
3406 | OS9000: "arlower,upper;<array_contents_type>". | |
3407 | ||
3408 | Fortran adjustable arrays use Adigits or Tdigits for lower or upper; | |
3409 | for these, produce a type like float[][]. */ | |
3410 | ||
c906108c SS |
3411 | { |
3412 | index_type = read_type (pp, objfile); | |
3413 | if (**pp != ';') | |
3414 | /* Improper format of array type decl. */ | |
3415 | return error_type (pp, objfile); | |
3416 | ++*pp; | |
3417 | } | |
3418 | ||
3419 | if (!(**pp >= '0' && **pp <= '9') && **pp != '-') | |
3420 | { | |
3421 | (*pp)++; | |
3422 | adjustable = 1; | |
3423 | } | |
cdecafbe | 3424 | lower = read_huge_number (pp, ';', &nbits); |
cdecafbe | 3425 | |
c906108c SS |
3426 | if (nbits != 0) |
3427 | return error_type (pp, objfile); | |
3428 | ||
3429 | if (!(**pp >= '0' && **pp <= '9') && **pp != '-') | |
3430 | { | |
3431 | (*pp)++; | |
3432 | adjustable = 1; | |
3433 | } | |
3434 | upper = read_huge_number (pp, ';', &nbits); | |
3435 | if (nbits != 0) | |
3436 | return error_type (pp, objfile); | |
c5aa993b | 3437 | |
c906108c SS |
3438 | element_type = read_type (pp, objfile); |
3439 | ||
3440 | if (adjustable) | |
3441 | { | |
3442 | lower = 0; | |
3443 | upper = -1; | |
3444 | } | |
3445 | ||
3446 | range_type = | |
3447 | create_range_type ((struct type *) NULL, index_type, lower, upper); | |
3448 | type = create_array_type (type, element_type, range_type); | |
3449 | ||
3450 | return type; | |
3451 | } | |
3452 | ||
3453 | ||
3454 | /* Read a definition of an enumeration type, | |
3455 | and create and return a suitable type object. | |
3456 | Also defines the symbols that represent the values of the type. */ | |
3457 | ||
3458 | static struct type * | |
aa1ee363 | 3459 | read_enum_type (char **pp, struct type *type, |
fba45db2 | 3460 | struct objfile *objfile) |
c906108c | 3461 | { |
52f0bd74 | 3462 | char *p; |
c906108c | 3463 | char *name; |
52f0bd74 AC |
3464 | long n; |
3465 | struct symbol *sym; | |
c906108c SS |
3466 | int nsyms = 0; |
3467 | struct pending **symlist; | |
3468 | struct pending *osyms, *syms; | |
3469 | int o_nsyms; | |
3470 | int nbits; | |
3471 | int unsigned_enum = 1; | |
3472 | ||
3473 | #if 0 | |
3474 | /* FIXME! The stabs produced by Sun CC merrily define things that ought | |
3475 | to be file-scope, between N_FN entries, using N_LSYM. What's a mother | |
3476 | to do? For now, force all enum values to file scope. */ | |
3477 | if (within_function) | |
3478 | symlist = &local_symbols; | |
3479 | else | |
3480 | #endif | |
3481 | symlist = &file_symbols; | |
3482 | osyms = *symlist; | |
3483 | o_nsyms = osyms ? osyms->nsyms : 0; | |
3484 | ||
c906108c SS |
3485 | /* The aix4 compiler emits an extra field before the enum members; |
3486 | my guess is it's a type of some sort. Just ignore it. */ | |
3487 | if (**pp == '-') | |
3488 | { | |
3489 | /* Skip over the type. */ | |
3490 | while (**pp != ':') | |
c5aa993b | 3491 | (*pp)++; |
c906108c SS |
3492 | |
3493 | /* Skip over the colon. */ | |
3494 | (*pp)++; | |
3495 | } | |
3496 | ||
3497 | /* Read the value-names and their values. | |
3498 | The input syntax is NAME:VALUE,NAME:VALUE, and so on. | |
3499 | A semicolon or comma instead of a NAME means the end. */ | |
3500 | while (**pp && **pp != ';' && **pp != ',') | |
3501 | { | |
3502 | STABS_CONTINUE (pp, objfile); | |
3503 | p = *pp; | |
c5aa993b JM |
3504 | while (*p != ':') |
3505 | p++; | |
3506 | name = obsavestring (*pp, p - *pp, &objfile->symbol_obstack); | |
c906108c SS |
3507 | *pp = p + 1; |
3508 | n = read_huge_number (pp, ',', &nbits); | |
3509 | if (nbits != 0) | |
3510 | return error_type (pp, objfile); | |
3511 | ||
3512 | sym = (struct symbol *) | |
c5aa993b | 3513 | obstack_alloc (&objfile->symbol_obstack, sizeof (struct symbol)); |
c906108c | 3514 | memset (sym, 0, sizeof (struct symbol)); |
22abf04a | 3515 | DEPRECATED_SYMBOL_NAME (sym) = name; |
c5aa993b | 3516 | SYMBOL_LANGUAGE (sym) = current_subfile->language; |
c906108c | 3517 | SYMBOL_CLASS (sym) = LOC_CONST; |
176620f1 | 3518 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
3519 | SYMBOL_VALUE (sym) = n; |
3520 | if (n < 0) | |
3521 | unsigned_enum = 0; | |
3522 | add_symbol_to_list (sym, symlist); | |
3523 | nsyms++; | |
3524 | } | |
3525 | ||
3526 | if (**pp == ';') | |
3527 | (*pp)++; /* Skip the semicolon. */ | |
3528 | ||
3529 | /* Now fill in the fields of the type-structure. */ | |
3530 | ||
3531 | TYPE_LENGTH (type) = TARGET_INT_BIT / HOST_CHAR_BIT; | |
3532 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
3533 | TYPE_FLAGS (type) &= ~TYPE_FLAG_STUB; | |
3534 | if (unsigned_enum) | |
3535 | TYPE_FLAGS (type) |= TYPE_FLAG_UNSIGNED; | |
3536 | TYPE_NFIELDS (type) = nsyms; | |
3537 | TYPE_FIELDS (type) = (struct field *) | |
3538 | TYPE_ALLOC (type, sizeof (struct field) * nsyms); | |
3539 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nsyms); | |
3540 | ||
3541 | /* Find the symbols for the values and put them into the type. | |
3542 | The symbols can be found in the symlist that we put them on | |
3543 | to cause them to be defined. osyms contains the old value | |
3544 | of that symlist; everything up to there was defined by us. */ | |
3545 | /* Note that we preserve the order of the enum constants, so | |
3546 | that in something like "enum {FOO, LAST_THING=FOO}" we print | |
3547 | FOO, not LAST_THING. */ | |
3548 | ||
3549 | for (syms = *symlist, n = nsyms - 1; syms; syms = syms->next) | |
3550 | { | |
3551 | int last = syms == osyms ? o_nsyms : 0; | |
3552 | int j = syms->nsyms; | |
3553 | for (; --j >= last; --n) | |
3554 | { | |
3555 | struct symbol *xsym = syms->symbol[j]; | |
3556 | SYMBOL_TYPE (xsym) = type; | |
22abf04a | 3557 | TYPE_FIELD_NAME (type, n) = DEPRECATED_SYMBOL_NAME (xsym); |
c906108c SS |
3558 | TYPE_FIELD_BITPOS (type, n) = SYMBOL_VALUE (xsym); |
3559 | TYPE_FIELD_BITSIZE (type, n) = 0; | |
3560 | } | |
3561 | if (syms == osyms) | |
3562 | break; | |
3563 | } | |
3564 | ||
3565 | return type; | |
3566 | } | |
3567 | ||
3568 | /* Sun's ACC uses a somewhat saner method for specifying the builtin | |
3569 | typedefs in every file (for int, long, etc): | |
3570 | ||
c5aa993b JM |
3571 | type = b <signed> <width> <format type>; <offset>; <nbits> |
3572 | signed = u or s. | |
3573 | optional format type = c or b for char or boolean. | |
3574 | offset = offset from high order bit to start bit of type. | |
3575 | width is # bytes in object of this type, nbits is # bits in type. | |
c906108c SS |
3576 | |
3577 | The width/offset stuff appears to be for small objects stored in | |
3578 | larger ones (e.g. `shorts' in `int' registers). We ignore it for now, | |
3579 | FIXME. */ | |
3580 | ||
3581 | static struct type * | |
35a2f538 | 3582 | read_sun_builtin_type (char **pp, int typenums[2], struct objfile *objfile) |
c906108c SS |
3583 | { |
3584 | int type_bits; | |
3585 | int nbits; | |
3586 | int signed_type; | |
3587 | enum type_code code = TYPE_CODE_INT; | |
3588 | ||
3589 | switch (**pp) | |
3590 | { | |
c5aa993b JM |
3591 | case 's': |
3592 | signed_type = 1; | |
3593 | break; | |
3594 | case 'u': | |
3595 | signed_type = 0; | |
3596 | break; | |
3597 | default: | |
3598 | return error_type (pp, objfile); | |
c906108c SS |
3599 | } |
3600 | (*pp)++; | |
3601 | ||
3602 | /* For some odd reason, all forms of char put a c here. This is strange | |
3603 | because no other type has this honor. We can safely ignore this because | |
3604 | we actually determine 'char'acterness by the number of bits specified in | |
3605 | the descriptor. | |
3606 | Boolean forms, e.g Fortran logical*X, put a b here. */ | |
3607 | ||
3608 | if (**pp == 'c') | |
3609 | (*pp)++; | |
3610 | else if (**pp == 'b') | |
3611 | { | |
3612 | code = TYPE_CODE_BOOL; | |
3613 | (*pp)++; | |
3614 | } | |
3615 | ||
3616 | /* The first number appears to be the number of bytes occupied | |
3617 | by this type, except that unsigned short is 4 instead of 2. | |
3618 | Since this information is redundant with the third number, | |
3619 | we will ignore it. */ | |
3620 | read_huge_number (pp, ';', &nbits); | |
3621 | if (nbits != 0) | |
3622 | return error_type (pp, objfile); | |
3623 | ||
3624 | /* The second number is always 0, so ignore it too. */ | |
3625 | read_huge_number (pp, ';', &nbits); | |
3626 | if (nbits != 0) | |
3627 | return error_type (pp, objfile); | |
3628 | ||
3629 | /* The third number is the number of bits for this type. */ | |
3630 | type_bits = read_huge_number (pp, 0, &nbits); | |
3631 | if (nbits != 0) | |
3632 | return error_type (pp, objfile); | |
3633 | /* The type *should* end with a semicolon. If it are embedded | |
3634 | in a larger type the semicolon may be the only way to know where | |
3635 | the type ends. If this type is at the end of the stabstring we | |
3636 | can deal with the omitted semicolon (but we don't have to like | |
3637 | it). Don't bother to complain(), Sun's compiler omits the semicolon | |
3638 | for "void". */ | |
3639 | if (**pp == ';') | |
3640 | ++(*pp); | |
3641 | ||
3642 | if (type_bits == 0) | |
3643 | return init_type (TYPE_CODE_VOID, 1, | |
c5aa993b | 3644 | signed_type ? 0 : TYPE_FLAG_UNSIGNED, (char *) NULL, |
c906108c SS |
3645 | objfile); |
3646 | else | |
3647 | return init_type (code, | |
3648 | type_bits / TARGET_CHAR_BIT, | |
c5aa993b | 3649 | signed_type ? 0 : TYPE_FLAG_UNSIGNED, (char *) NULL, |
c906108c SS |
3650 | objfile); |
3651 | } | |
3652 | ||
3653 | static struct type * | |
35a2f538 | 3654 | read_sun_floating_type (char **pp, int typenums[2], struct objfile *objfile) |
c906108c SS |
3655 | { |
3656 | int nbits; | |
3657 | int details; | |
3658 | int nbytes; | |
f65ca430 | 3659 | struct type *rettype; |
c906108c SS |
3660 | |
3661 | /* The first number has more details about the type, for example | |
3662 | FN_COMPLEX. */ | |
3663 | details = read_huge_number (pp, ';', &nbits); | |
3664 | if (nbits != 0) | |
3665 | return error_type (pp, objfile); | |
3666 | ||
3667 | /* The second number is the number of bytes occupied by this type */ | |
3668 | nbytes = read_huge_number (pp, ';', &nbits); | |
3669 | if (nbits != 0) | |
3670 | return error_type (pp, objfile); | |
3671 | ||
3672 | if (details == NF_COMPLEX || details == NF_COMPLEX16 | |
3673 | || details == NF_COMPLEX32) | |
f65ca430 DJ |
3674 | { |
3675 | rettype = init_type (TYPE_CODE_COMPLEX, nbytes, 0, NULL, objfile); | |
3676 | TYPE_TARGET_TYPE (rettype) | |
3677 | = init_type (TYPE_CODE_FLT, nbytes / 2, 0, NULL, objfile); | |
3678 | return rettype; | |
3679 | } | |
c906108c SS |
3680 | |
3681 | return init_type (TYPE_CODE_FLT, nbytes, 0, NULL, objfile); | |
3682 | } | |
3683 | ||
3684 | /* Read a number from the string pointed to by *PP. | |
3685 | The value of *PP is advanced over the number. | |
3686 | If END is nonzero, the character that ends the | |
3687 | number must match END, or an error happens; | |
3688 | and that character is skipped if it does match. | |
3689 | If END is zero, *PP is left pointing to that character. | |
3690 | ||
3691 | If the number fits in a long, set *BITS to 0 and return the value. | |
3692 | If not, set *BITS to be the number of bits in the number and return 0. | |
3693 | ||
3694 | If encounter garbage, set *BITS to -1 and return 0. */ | |
3695 | ||
c2d11a7d | 3696 | static long |
fba45db2 | 3697 | read_huge_number (char **pp, int end, int *bits) |
c906108c SS |
3698 | { |
3699 | char *p = *pp; | |
3700 | int sign = 1; | |
c2d11a7d | 3701 | long n = 0; |
c906108c SS |
3702 | int radix = 10; |
3703 | char overflow = 0; | |
3704 | int nbits = 0; | |
3705 | int c; | |
c2d11a7d | 3706 | long upper_limit; |
c5aa993b | 3707 | |
c906108c SS |
3708 | if (*p == '-') |
3709 | { | |
3710 | sign = -1; | |
3711 | p++; | |
3712 | } | |
3713 | ||
3714 | /* Leading zero means octal. GCC uses this to output values larger | |
3715 | than an int (because that would be hard in decimal). */ | |
3716 | if (*p == '0') | |
3717 | { | |
3718 | radix = 8; | |
3719 | p++; | |
3720 | } | |
3721 | ||
1b831c93 | 3722 | upper_limit = LONG_MAX / radix; |
c906108c SS |
3723 | |
3724 | while ((c = *p++) >= '0' && c < ('0' + radix)) | |
3725 | { | |
3726 | if (n <= upper_limit) | |
3727 | { | |
3728 | n *= radix; | |
3729 | n += c - '0'; /* FIXME this overflows anyway */ | |
3730 | } | |
3731 | else | |
3732 | overflow = 1; | |
c5aa993b | 3733 | |
c906108c | 3734 | /* This depends on large values being output in octal, which is |
c5aa993b | 3735 | what GCC does. */ |
c906108c SS |
3736 | if (radix == 8) |
3737 | { | |
3738 | if (nbits == 0) | |
3739 | { | |
3740 | if (c == '0') | |
3741 | /* Ignore leading zeroes. */ | |
3742 | ; | |
3743 | else if (c == '1') | |
3744 | nbits = 1; | |
3745 | else if (c == '2' || c == '3') | |
3746 | nbits = 2; | |
3747 | else | |
3748 | nbits = 3; | |
3749 | } | |
3750 | else | |
3751 | nbits += 3; | |
3752 | } | |
3753 | } | |
3754 | if (end) | |
3755 | { | |
3756 | if (c && c != end) | |
3757 | { | |
3758 | if (bits != NULL) | |
3759 | *bits = -1; | |
3760 | return 0; | |
3761 | } | |
3762 | } | |
3763 | else | |
3764 | --p; | |
3765 | ||
3766 | *pp = p; | |
3767 | if (overflow) | |
3768 | { | |
3769 | if (nbits == 0) | |
3770 | { | |
3771 | /* Large decimal constants are an error (because it is hard to | |
3772 | count how many bits are in them). */ | |
3773 | if (bits != NULL) | |
3774 | *bits = -1; | |
3775 | return 0; | |
3776 | } | |
c5aa993b | 3777 | |
c906108c | 3778 | /* -0x7f is the same as 0x80. So deal with it by adding one to |
c5aa993b | 3779 | the number of bits. */ |
c906108c SS |
3780 | if (sign == -1) |
3781 | ++nbits; | |
3782 | if (bits) | |
3783 | *bits = nbits; | |
3784 | } | |
3785 | else | |
3786 | { | |
3787 | if (bits) | |
3788 | *bits = 0; | |
3789 | return n * sign; | |
3790 | } | |
3791 | /* It's *BITS which has the interesting information. */ | |
3792 | return 0; | |
3793 | } | |
3794 | ||
3795 | static struct type * | |
35a2f538 | 3796 | read_range_type (char **pp, int typenums[2], struct objfile *objfile) |
c906108c SS |
3797 | { |
3798 | char *orig_pp = *pp; | |
3799 | int rangenums[2]; | |
c2d11a7d | 3800 | long n2, n3; |
c906108c SS |
3801 | int n2bits, n3bits; |
3802 | int self_subrange; | |
3803 | struct type *result_type; | |
3804 | struct type *index_type = NULL; | |
3805 | ||
3806 | /* First comes a type we are a subrange of. | |
3807 | In C it is usually 0, 1 or the type being defined. */ | |
3808 | if (read_type_number (pp, rangenums) != 0) | |
3809 | return error_type (pp, objfile); | |
3810 | self_subrange = (rangenums[0] == typenums[0] && | |
3811 | rangenums[1] == typenums[1]); | |
3812 | ||
3813 | if (**pp == '=') | |
3814 | { | |
3815 | *pp = orig_pp; | |
3816 | index_type = read_type (pp, objfile); | |
3817 | } | |
3818 | ||
3819 | /* A semicolon should now follow; skip it. */ | |
3820 | if (**pp == ';') | |
3821 | (*pp)++; | |
3822 | ||
3823 | /* The remaining two operands are usually lower and upper bounds | |
3824 | of the range. But in some special cases they mean something else. */ | |
3825 | n2 = read_huge_number (pp, ';', &n2bits); | |
3826 | n3 = read_huge_number (pp, ';', &n3bits); | |
3827 | ||
3828 | if (n2bits == -1 || n3bits == -1) | |
3829 | return error_type (pp, objfile); | |
3830 | ||
3831 | if (index_type) | |
3832 | goto handle_true_range; | |
3833 | ||
3834 | /* If limits are huge, must be large integral type. */ | |
3835 | if (n2bits != 0 || n3bits != 0) | |
3836 | { | |
3837 | char got_signed = 0; | |
3838 | char got_unsigned = 0; | |
3839 | /* Number of bits in the type. */ | |
3840 | int nbits = 0; | |
3841 | ||
3842 | /* Range from 0 to <large number> is an unsigned large integral type. */ | |
3843 | if ((n2bits == 0 && n2 == 0) && n3bits != 0) | |
3844 | { | |
3845 | got_unsigned = 1; | |
3846 | nbits = n3bits; | |
3847 | } | |
3848 | /* Range from <large number> to <large number>-1 is a large signed | |
c5aa993b JM |
3849 | integral type. Take care of the case where <large number> doesn't |
3850 | fit in a long but <large number>-1 does. */ | |
c906108c SS |
3851 | else if ((n2bits != 0 && n3bits != 0 && n2bits == n3bits + 1) |
3852 | || (n2bits != 0 && n3bits == 0 | |
c2d11a7d JM |
3853 | && (n2bits == sizeof (long) * HOST_CHAR_BIT) |
3854 | && n3 == LONG_MAX)) | |
c906108c SS |
3855 | { |
3856 | got_signed = 1; | |
3857 | nbits = n2bits; | |
3858 | } | |
3859 | ||
3860 | if (got_signed || got_unsigned) | |
3861 | { | |
3862 | return init_type (TYPE_CODE_INT, nbits / TARGET_CHAR_BIT, | |
3863 | got_unsigned ? TYPE_FLAG_UNSIGNED : 0, NULL, | |
3864 | objfile); | |
3865 | } | |
3866 | else | |
3867 | return error_type (pp, objfile); | |
3868 | } | |
3869 | ||
3870 | /* A type defined as a subrange of itself, with bounds both 0, is void. */ | |
3871 | if (self_subrange && n2 == 0 && n3 == 0) | |
3872 | return init_type (TYPE_CODE_VOID, 1, 0, NULL, objfile); | |
3873 | ||
3874 | /* If n3 is zero and n2 is positive, we want a floating type, and n2 | |
3875 | is the width in bytes. | |
3876 | ||
3877 | Fortran programs appear to use this for complex types also. To | |
3878 | distinguish between floats and complex, g77 (and others?) seem | |
3879 | to use self-subranges for the complexes, and subranges of int for | |
3880 | the floats. | |
3881 | ||
3882 | Also note that for complexes, g77 sets n2 to the size of one of | |
3883 | the member floats, not the whole complex beast. My guess is that | |
3884 | this was to work well with pre-COMPLEX versions of gdb. */ | |
3885 | ||
3886 | if (n3 == 0 && n2 > 0) | |
3887 | { | |
1300f5dd JB |
3888 | struct type *float_type |
3889 | = init_type (TYPE_CODE_FLT, n2, 0, NULL, objfile); | |
3890 | ||
c906108c SS |
3891 | if (self_subrange) |
3892 | { | |
1300f5dd JB |
3893 | struct type *complex_type = |
3894 | init_type (TYPE_CODE_COMPLEX, 2 * n2, 0, NULL, objfile); | |
3895 | TYPE_TARGET_TYPE (complex_type) = float_type; | |
3896 | return complex_type; | |
c906108c SS |
3897 | } |
3898 | else | |
1300f5dd | 3899 | return float_type; |
c906108c SS |
3900 | } |
3901 | ||
3902 | /* If the upper bound is -1, it must really be an unsigned int. */ | |
3903 | ||
3904 | else if (n2 == 0 && n3 == -1) | |
3905 | { | |
3906 | /* It is unsigned int or unsigned long. */ | |
3907 | /* GCC 2.3.3 uses this for long long too, but that is just a GDB 3.5 | |
c5aa993b | 3908 | compatibility hack. */ |
c906108c SS |
3909 | return init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT, |
3910 | TYPE_FLAG_UNSIGNED, NULL, objfile); | |
3911 | } | |
3912 | ||
3913 | /* Special case: char is defined (Who knows why) as a subrange of | |
3914 | itself with range 0-127. */ | |
3915 | else if (self_subrange && n2 == 0 && n3 == 127) | |
973ccf8b | 3916 | return init_type (TYPE_CODE_INT, 1, TYPE_FLAG_NOSIGN, NULL, objfile); |
c906108c | 3917 | |
c906108c SS |
3918 | /* We used to do this only for subrange of self or subrange of int. */ |
3919 | else if (n2 == 0) | |
3920 | { | |
a0b3c4fd JM |
3921 | /* -1 is used for the upper bound of (4 byte) "unsigned int" and |
3922 | "unsigned long", and we already checked for that, | |
3923 | so don't need to test for it here. */ | |
3924 | ||
c906108c SS |
3925 | if (n3 < 0) |
3926 | /* n3 actually gives the size. */ | |
c5aa993b | 3927 | return init_type (TYPE_CODE_INT, -n3, TYPE_FLAG_UNSIGNED, |
c906108c | 3928 | NULL, objfile); |
c906108c | 3929 | |
7be570e7 | 3930 | /* Is n3 == 2**(8n)-1 for some integer n? Then it's an |
a0b3c4fd JM |
3931 | unsigned n-byte integer. But do require n to be a power of |
3932 | two; we don't want 3- and 5-byte integers flying around. */ | |
3933 | { | |
3934 | int bytes; | |
3935 | unsigned long bits; | |
3936 | ||
3937 | bits = n3; | |
3938 | for (bytes = 0; (bits & 0xff) == 0xff; bytes++) | |
3939 | bits >>= 8; | |
3940 | if (bits == 0 | |
3941 | && ((bytes - 1) & bytes) == 0) /* "bytes is a power of two" */ | |
3942 | return init_type (TYPE_CODE_INT, bytes, TYPE_FLAG_UNSIGNED, NULL, | |
3943 | objfile); | |
3944 | } | |
c906108c SS |
3945 | } |
3946 | /* I think this is for Convex "long long". Since I don't know whether | |
3947 | Convex sets self_subrange, I also accept that particular size regardless | |
3948 | of self_subrange. */ | |
3949 | else if (n3 == 0 && n2 < 0 | |
3950 | && (self_subrange | |
c5aa993b JM |
3951 | || n2 == -TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT)) |
3952 | return init_type (TYPE_CODE_INT, -n2, 0, NULL, objfile); | |
3953 | else if (n2 == -n3 - 1) | |
c906108c SS |
3954 | { |
3955 | if (n3 == 0x7f) | |
3956 | return init_type (TYPE_CODE_INT, 1, 0, NULL, objfile); | |
3957 | if (n3 == 0x7fff) | |
3958 | return init_type (TYPE_CODE_INT, 2, 0, NULL, objfile); | |
3959 | if (n3 == 0x7fffffff) | |
3960 | return init_type (TYPE_CODE_INT, 4, 0, NULL, objfile); | |
3961 | } | |
3962 | ||
3963 | /* We have a real range type on our hands. Allocate space and | |
3964 | return a real pointer. */ | |
c5aa993b | 3965 | handle_true_range: |
c906108c SS |
3966 | |
3967 | if (self_subrange) | |
3968 | index_type = builtin_type_int; | |
3969 | else | |
3970 | index_type = *dbx_lookup_type (rangenums); | |
3971 | if (index_type == NULL) | |
3972 | { | |
3973 | /* Does this actually ever happen? Is that why we are worrying | |
3974 | about dealing with it rather than just calling error_type? */ | |
3975 | ||
3976 | static struct type *range_type_index; | |
3977 | ||
23136709 KB |
3978 | complaint (&symfile_complaints, |
3979 | "base type %d of range type is not defined", rangenums[1]); | |
c906108c SS |
3980 | if (range_type_index == NULL) |
3981 | range_type_index = | |
3982 | init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT, | |
3983 | 0, "range type index type", NULL); | |
3984 | index_type = range_type_index; | |
3985 | } | |
3986 | ||
3987 | result_type = create_range_type ((struct type *) NULL, index_type, n2, n3); | |
3988 | return (result_type); | |
3989 | } | |
3990 | ||
3991 | /* Read in an argument list. This is a list of types, separated by commas | |
3992 | and terminated with END. Return the list of types read in, or (struct type | |
3993 | **)-1 if there is an error. */ | |
3994 | ||
ad2f7632 DJ |
3995 | static struct field * |
3996 | read_args (char **pp, int end, struct objfile *objfile, int *nargsp, | |
3997 | int *varargsp) | |
c906108c SS |
3998 | { |
3999 | /* FIXME! Remove this arbitrary limit! */ | |
ad2f7632 DJ |
4000 | struct type *types[1024]; /* allow for fns of 1023 parameters */ |
4001 | int n = 0, i; | |
4002 | struct field *rval; | |
c906108c SS |
4003 | |
4004 | while (**pp != end) | |
4005 | { | |
4006 | if (**pp != ',') | |
4007 | /* Invalid argument list: no ','. */ | |
ad2f7632 | 4008 | return (struct field *) -1; |
c906108c SS |
4009 | (*pp)++; |
4010 | STABS_CONTINUE (pp, objfile); | |
4011 | types[n++] = read_type (pp, objfile); | |
4012 | } | |
4013 | (*pp)++; /* get past `end' (the ':' character) */ | |
4014 | ||
ad2f7632 DJ |
4015 | if (TYPE_CODE (types[n - 1]) != TYPE_CODE_VOID) |
4016 | *varargsp = 1; | |
c906108c SS |
4017 | else |
4018 | { | |
ad2f7632 DJ |
4019 | n--; |
4020 | *varargsp = 0; | |
c906108c | 4021 | } |
ad2f7632 DJ |
4022 | |
4023 | rval = (struct field *) xmalloc (n * sizeof (struct field)); | |
4024 | memset (rval, 0, n * sizeof (struct field)); | |
4025 | for (i = 0; i < n; i++) | |
4026 | rval[i].type = types[i]; | |
4027 | *nargsp = n; | |
c906108c SS |
4028 | return rval; |
4029 | } | |
4030 | \f | |
4031 | /* Common block handling. */ | |
4032 | ||
4033 | /* List of symbols declared since the last BCOMM. This list is a tail | |
4034 | of local_symbols. When ECOMM is seen, the symbols on the list | |
4035 | are noted so their proper addresses can be filled in later, | |
4036 | using the common block base address gotten from the assembler | |
4037 | stabs. */ | |
4038 | ||
4039 | static struct pending *common_block; | |
4040 | static int common_block_i; | |
4041 | ||
4042 | /* Name of the current common block. We get it from the BCOMM instead of the | |
4043 | ECOMM to match IBM documentation (even though IBM puts the name both places | |
4044 | like everyone else). */ | |
4045 | static char *common_block_name; | |
4046 | ||
4047 | /* Process a N_BCOMM symbol. The storage for NAME is not guaranteed | |
4048 | to remain after this function returns. */ | |
4049 | ||
4050 | void | |
fba45db2 | 4051 | common_block_start (char *name, struct objfile *objfile) |
c906108c SS |
4052 | { |
4053 | if (common_block_name != NULL) | |
4054 | { | |
23136709 KB |
4055 | complaint (&symfile_complaints, |
4056 | "Invalid symbol data: common block within common block"); | |
c906108c SS |
4057 | } |
4058 | common_block = local_symbols; | |
4059 | common_block_i = local_symbols ? local_symbols->nsyms : 0; | |
4060 | common_block_name = obsavestring (name, strlen (name), | |
c5aa993b | 4061 | &objfile->symbol_obstack); |
c906108c SS |
4062 | } |
4063 | ||
4064 | /* Process a N_ECOMM symbol. */ | |
4065 | ||
4066 | void | |
fba45db2 | 4067 | common_block_end (struct objfile *objfile) |
c906108c SS |
4068 | { |
4069 | /* Symbols declared since the BCOMM are to have the common block | |
4070 | start address added in when we know it. common_block and | |
4071 | common_block_i point to the first symbol after the BCOMM in | |
4072 | the local_symbols list; copy the list and hang it off the | |
4073 | symbol for the common block name for later fixup. */ | |
4074 | int i; | |
4075 | struct symbol *sym; | |
4076 | struct pending *new = 0; | |
4077 | struct pending *next; | |
4078 | int j; | |
4079 | ||
4080 | if (common_block_name == NULL) | |
4081 | { | |
23136709 | 4082 | complaint (&symfile_complaints, "ECOMM symbol unmatched by BCOMM"); |
c906108c SS |
4083 | return; |
4084 | } | |
4085 | ||
c5aa993b JM |
4086 | sym = (struct symbol *) |
4087 | obstack_alloc (&objfile->symbol_obstack, sizeof (struct symbol)); | |
c906108c SS |
4088 | memset (sym, 0, sizeof (struct symbol)); |
4089 | /* Note: common_block_name already saved on symbol_obstack */ | |
22abf04a | 4090 | DEPRECATED_SYMBOL_NAME (sym) = common_block_name; |
c906108c SS |
4091 | SYMBOL_CLASS (sym) = LOC_BLOCK; |
4092 | ||
4093 | /* Now we copy all the symbols which have been defined since the BCOMM. */ | |
4094 | ||
4095 | /* Copy all the struct pendings before common_block. */ | |
4096 | for (next = local_symbols; | |
4097 | next != NULL && next != common_block; | |
4098 | next = next->next) | |
4099 | { | |
4100 | for (j = 0; j < next->nsyms; j++) | |
4101 | add_symbol_to_list (next->symbol[j], &new); | |
4102 | } | |
4103 | ||
4104 | /* Copy however much of COMMON_BLOCK we need. If COMMON_BLOCK is | |
4105 | NULL, it means copy all the local symbols (which we already did | |
4106 | above). */ | |
4107 | ||
4108 | if (common_block != NULL) | |
4109 | for (j = common_block_i; j < common_block->nsyms; j++) | |
4110 | add_symbol_to_list (common_block->symbol[j], &new); | |
4111 | ||
4112 | SYMBOL_TYPE (sym) = (struct type *) new; | |
4113 | ||
4114 | /* Should we be putting local_symbols back to what it was? | |
4115 | Does it matter? */ | |
4116 | ||
22abf04a | 4117 | i = hashname (DEPRECATED_SYMBOL_NAME (sym)); |
c906108c SS |
4118 | SYMBOL_VALUE_CHAIN (sym) = global_sym_chain[i]; |
4119 | global_sym_chain[i] = sym; | |
4120 | common_block_name = NULL; | |
4121 | } | |
4122 | ||
4123 | /* Add a common block's start address to the offset of each symbol | |
4124 | declared to be in it (by being between a BCOMM/ECOMM pair that uses | |
4125 | the common block name). */ | |
4126 | ||
4127 | static void | |
fba45db2 | 4128 | fix_common_block (struct symbol *sym, int valu) |
c906108c SS |
4129 | { |
4130 | struct pending *next = (struct pending *) SYMBOL_TYPE (sym); | |
c5aa993b | 4131 | for (; next; next = next->next) |
c906108c | 4132 | { |
aa1ee363 | 4133 | int j; |
c906108c SS |
4134 | for (j = next->nsyms - 1; j >= 0; j--) |
4135 | SYMBOL_VALUE_ADDRESS (next->symbol[j]) += valu; | |
4136 | } | |
4137 | } | |
c5aa993b | 4138 | \f |
c906108c SS |
4139 | |
4140 | ||
c906108c SS |
4141 | /* What about types defined as forward references inside of a small lexical |
4142 | scope? */ | |
4143 | /* Add a type to the list of undefined types to be checked through | |
4144 | once this file has been read in. */ | |
4145 | ||
a7a48797 | 4146 | static void |
fba45db2 | 4147 | add_undefined_type (struct type *type) |
c906108c SS |
4148 | { |
4149 | if (undef_types_length == undef_types_allocated) | |
4150 | { | |
4151 | undef_types_allocated *= 2; | |
4152 | undef_types = (struct type **) | |
4153 | xrealloc ((char *) undef_types, | |
4154 | undef_types_allocated * sizeof (struct type *)); | |
4155 | } | |
4156 | undef_types[undef_types_length++] = type; | |
4157 | } | |
4158 | ||
4159 | /* Go through each undefined type, see if it's still undefined, and fix it | |
4160 | up if possible. We have two kinds of undefined types: | |
4161 | ||
4162 | TYPE_CODE_ARRAY: Array whose target type wasn't defined yet. | |
c5aa993b JM |
4163 | Fix: update array length using the element bounds |
4164 | and the target type's length. | |
c906108c | 4165 | TYPE_CODE_STRUCT, TYPE_CODE_UNION: Structure whose fields were not |
c5aa993b JM |
4166 | yet defined at the time a pointer to it was made. |
4167 | Fix: Do a full lookup on the struct/union tag. */ | |
c906108c | 4168 | void |
fba45db2 | 4169 | cleanup_undefined_types (void) |
c906108c SS |
4170 | { |
4171 | struct type **type; | |
4172 | ||
4173 | for (type = undef_types; type < undef_types + undef_types_length; type++) | |
4174 | { | |
4175 | switch (TYPE_CODE (*type)) | |
4176 | { | |
4177 | ||
c5aa993b JM |
4178 | case TYPE_CODE_STRUCT: |
4179 | case TYPE_CODE_UNION: | |
4180 | case TYPE_CODE_ENUM: | |
c906108c SS |
4181 | { |
4182 | /* Check if it has been defined since. Need to do this here | |
4183 | as well as in check_typedef to deal with the (legitimate in | |
4184 | C though not C++) case of several types with the same name | |
4185 | in different source files. */ | |
74a9bb82 | 4186 | if (TYPE_STUB (*type)) |
c906108c SS |
4187 | { |
4188 | struct pending *ppt; | |
4189 | int i; | |
4190 | /* Name of the type, without "struct" or "union" */ | |
4191 | char *typename = TYPE_TAG_NAME (*type); | |
4192 | ||
4193 | if (typename == NULL) | |
4194 | { | |
23136709 | 4195 | complaint (&symfile_complaints, "need a type name"); |
c906108c SS |
4196 | break; |
4197 | } | |
4198 | for (ppt = file_symbols; ppt; ppt = ppt->next) | |
4199 | { | |
4200 | for (i = 0; i < ppt->nsyms; i++) | |
4201 | { | |
4202 | struct symbol *sym = ppt->symbol[i]; | |
c5aa993b | 4203 | |
c906108c | 4204 | if (SYMBOL_CLASS (sym) == LOC_TYPEDEF |
176620f1 | 4205 | && SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN |
c906108c SS |
4206 | && (TYPE_CODE (SYMBOL_TYPE (sym)) == |
4207 | TYPE_CODE (*type)) | |
6314a349 | 4208 | && strcmp (DEPRECATED_SYMBOL_NAME (sym), typename) == 0) |
13a393b0 | 4209 | replace_type (*type, SYMBOL_TYPE (sym)); |
c906108c SS |
4210 | } |
4211 | } | |
4212 | } | |
4213 | } | |
4214 | break; | |
4215 | ||
4216 | default: | |
4217 | { | |
23136709 KB |
4218 | complaint (&symfile_complaints, |
4219 | "GDB internal error. cleanup_undefined_types with bad type %d.", | |
4220 | TYPE_CODE (*type)); | |
c906108c SS |
4221 | } |
4222 | break; | |
4223 | } | |
4224 | } | |
4225 | ||
4226 | undef_types_length = 0; | |
4227 | } | |
4228 | ||
4229 | /* Scan through all of the global symbols defined in the object file, | |
4230 | assigning values to the debugging symbols that need to be assigned | |
4231 | to. Get these symbols from the minimal symbol table. */ | |
4232 | ||
4233 | void | |
fba45db2 | 4234 | scan_file_globals (struct objfile *objfile) |
c906108c SS |
4235 | { |
4236 | int hash; | |
4237 | struct minimal_symbol *msymbol; | |
507836c0 | 4238 | struct symbol *sym, *prev; |
c906108c SS |
4239 | struct objfile *resolve_objfile; |
4240 | ||
4241 | /* SVR4 based linkers copy referenced global symbols from shared | |
4242 | libraries to the main executable. | |
4243 | If we are scanning the symbols for a shared library, try to resolve | |
4244 | them from the minimal symbols of the main executable first. */ | |
4245 | ||
4246 | if (symfile_objfile && objfile != symfile_objfile) | |
4247 | resolve_objfile = symfile_objfile; | |
4248 | else | |
4249 | resolve_objfile = objfile; | |
4250 | ||
4251 | while (1) | |
4252 | { | |
4253 | /* Avoid expensive loop through all minimal symbols if there are | |
c5aa993b | 4254 | no unresolved symbols. */ |
c906108c SS |
4255 | for (hash = 0; hash < HASHSIZE; hash++) |
4256 | { | |
4257 | if (global_sym_chain[hash]) | |
4258 | break; | |
4259 | } | |
4260 | if (hash >= HASHSIZE) | |
4261 | return; | |
4262 | ||
c5aa993b | 4263 | for (msymbol = resolve_objfile->msymbols; |
22abf04a | 4264 | msymbol && DEPRECATED_SYMBOL_NAME (msymbol) != NULL; |
c906108c SS |
4265 | msymbol++) |
4266 | { | |
4267 | QUIT; | |
4268 | ||
4269 | /* Skip static symbols. */ | |
4270 | switch (MSYMBOL_TYPE (msymbol)) | |
4271 | { | |
4272 | case mst_file_text: | |
4273 | case mst_file_data: | |
4274 | case mst_file_bss: | |
4275 | continue; | |
4276 | default: | |
4277 | break; | |
4278 | } | |
4279 | ||
4280 | prev = NULL; | |
4281 | ||
4282 | /* Get the hash index and check all the symbols | |
4283 | under that hash index. */ | |
4284 | ||
22abf04a | 4285 | hash = hashname (DEPRECATED_SYMBOL_NAME (msymbol)); |
c906108c SS |
4286 | |
4287 | for (sym = global_sym_chain[hash]; sym;) | |
4288 | { | |
22abf04a | 4289 | if (DEPRECATED_SYMBOL_NAME (msymbol)[0] == DEPRECATED_SYMBOL_NAME (sym)[0] && |
6314a349 | 4290 | strcmp (DEPRECATED_SYMBOL_NAME (msymbol) + 1, DEPRECATED_SYMBOL_NAME (sym) + 1) == 0) |
c906108c | 4291 | { |
c906108c SS |
4292 | /* Splice this symbol out of the hash chain and |
4293 | assign the value we have to it. */ | |
4294 | if (prev) | |
4295 | { | |
4296 | SYMBOL_VALUE_CHAIN (prev) = SYMBOL_VALUE_CHAIN (sym); | |
4297 | } | |
4298 | else | |
4299 | { | |
4300 | global_sym_chain[hash] = SYMBOL_VALUE_CHAIN (sym); | |
4301 | } | |
c5aa993b | 4302 | |
c906108c SS |
4303 | /* Check to see whether we need to fix up a common block. */ |
4304 | /* Note: this code might be executed several times for | |
4305 | the same symbol if there are multiple references. */ | |
507836c0 | 4306 | if (sym) |
c906108c | 4307 | { |
507836c0 | 4308 | if (SYMBOL_CLASS (sym) == LOC_BLOCK) |
c906108c | 4309 | { |
507836c0 | 4310 | fix_common_block (sym, |
c906108c SS |
4311 | SYMBOL_VALUE_ADDRESS (msymbol)); |
4312 | } | |
4313 | else | |
4314 | { | |
507836c0 | 4315 | SYMBOL_VALUE_ADDRESS (sym) |
c906108c SS |
4316 | = SYMBOL_VALUE_ADDRESS (msymbol); |
4317 | } | |
507836c0 | 4318 | SYMBOL_SECTION (sym) = SYMBOL_SECTION (msymbol); |
c906108c SS |
4319 | } |
4320 | ||
c906108c SS |
4321 | if (prev) |
4322 | { | |
4323 | sym = SYMBOL_VALUE_CHAIN (prev); | |
4324 | } | |
4325 | else | |
4326 | { | |
4327 | sym = global_sym_chain[hash]; | |
4328 | } | |
4329 | } | |
4330 | else | |
4331 | { | |
4332 | prev = sym; | |
4333 | sym = SYMBOL_VALUE_CHAIN (sym); | |
4334 | } | |
4335 | } | |
4336 | } | |
4337 | if (resolve_objfile == objfile) | |
4338 | break; | |
4339 | resolve_objfile = objfile; | |
4340 | } | |
4341 | ||
4342 | /* Change the storage class of any remaining unresolved globals to | |
4343 | LOC_UNRESOLVED and remove them from the chain. */ | |
4344 | for (hash = 0; hash < HASHSIZE; hash++) | |
4345 | { | |
4346 | sym = global_sym_chain[hash]; | |
4347 | while (sym) | |
4348 | { | |
4349 | prev = sym; | |
4350 | sym = SYMBOL_VALUE_CHAIN (sym); | |
4351 | ||
4352 | /* Change the symbol address from the misleading chain value | |
4353 | to address zero. */ | |
4354 | SYMBOL_VALUE_ADDRESS (prev) = 0; | |
4355 | ||
4356 | /* Complain about unresolved common block symbols. */ | |
4357 | if (SYMBOL_CLASS (prev) == LOC_STATIC) | |
4358 | SYMBOL_CLASS (prev) = LOC_UNRESOLVED; | |
4359 | else | |
23136709 KB |
4360 | complaint (&symfile_complaints, |
4361 | "%s: common block `%s' from global_sym_chain unresolved", | |
22abf04a | 4362 | objfile->name, DEPRECATED_SYMBOL_NAME (prev)); |
c906108c SS |
4363 | } |
4364 | } | |
4365 | memset (global_sym_chain, 0, sizeof (global_sym_chain)); | |
4366 | } | |
4367 | ||
4368 | /* Initialize anything that needs initializing when starting to read | |
4369 | a fresh piece of a symbol file, e.g. reading in the stuff corresponding | |
4370 | to a psymtab. */ | |
4371 | ||
4372 | void | |
fba45db2 | 4373 | stabsread_init (void) |
c906108c SS |
4374 | { |
4375 | } | |
4376 | ||
4377 | /* Initialize anything that needs initializing when a completely new | |
4378 | symbol file is specified (not just adding some symbols from another | |
4379 | file, e.g. a shared library). */ | |
4380 | ||
4381 | void | |
fba45db2 | 4382 | stabsread_new_init (void) |
c906108c SS |
4383 | { |
4384 | /* Empty the hash table of global syms looking for values. */ | |
4385 | memset (global_sym_chain, 0, sizeof (global_sym_chain)); | |
4386 | } | |
4387 | ||
4388 | /* Initialize anything that needs initializing at the same time as | |
4389 | start_symtab() is called. */ | |
4390 | ||
c5aa993b | 4391 | void |
fba45db2 | 4392 | start_stabs (void) |
c906108c SS |
4393 | { |
4394 | global_stabs = NULL; /* AIX COFF */ | |
4395 | /* Leave FILENUM of 0 free for builtin types and this file's types. */ | |
4396 | n_this_object_header_files = 1; | |
4397 | type_vector_length = 0; | |
4398 | type_vector = (struct type **) 0; | |
4399 | ||
4400 | /* FIXME: If common_block_name is not already NULL, we should complain(). */ | |
4401 | common_block_name = NULL; | |
c906108c SS |
4402 | } |
4403 | ||
4404 | /* Call after end_symtab() */ | |
4405 | ||
c5aa993b | 4406 | void |
fba45db2 | 4407 | end_stabs (void) |
c906108c SS |
4408 | { |
4409 | if (type_vector) | |
4410 | { | |
b8c9b27d | 4411 | xfree (type_vector); |
c906108c SS |
4412 | } |
4413 | type_vector = 0; | |
4414 | type_vector_length = 0; | |
4415 | previous_stab_code = 0; | |
4416 | } | |
4417 | ||
4418 | void | |
fba45db2 | 4419 | finish_global_stabs (struct objfile *objfile) |
c906108c SS |
4420 | { |
4421 | if (global_stabs) | |
4422 | { | |
4423 | patch_block_stabs (global_symbols, global_stabs, objfile); | |
b8c9b27d | 4424 | xfree (global_stabs); |
c906108c SS |
4425 | global_stabs = NULL; |
4426 | } | |
4427 | } | |
4428 | ||
7e1d63ec AF |
4429 | /* Find the end of the name, delimited by a ':', but don't match |
4430 | ObjC symbols which look like -[Foo bar::]:bla. */ | |
4431 | static char * | |
4432 | find_name_end (char *name) | |
4433 | { | |
4434 | char *s = name; | |
4435 | if (s[0] == '-' || *s == '+') | |
4436 | { | |
4437 | /* Must be an ObjC method symbol. */ | |
4438 | if (s[1] != '[') | |
4439 | { | |
4440 | error ("invalid symbol name \"%s\"", name); | |
4441 | } | |
4442 | s = strchr (s, ']'); | |
4443 | if (s == NULL) | |
4444 | { | |
4445 | error ("invalid symbol name \"%s\"", name); | |
4446 | } | |
4447 | return strchr (s, ':'); | |
4448 | } | |
4449 | else | |
4450 | { | |
4451 | return strchr (s, ':'); | |
4452 | } | |
4453 | } | |
4454 | ||
c906108c SS |
4455 | /* Initializer for this module */ |
4456 | ||
4457 | void | |
fba45db2 | 4458 | _initialize_stabsread (void) |
c906108c SS |
4459 | { |
4460 | undef_types_allocated = 20; | |
4461 | undef_types_length = 0; | |
4462 | undef_types = (struct type **) | |
4463 | xmalloc (undef_types_allocated * sizeof (struct type *)); | |
4464 | } |