Commit | Line | Data |
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c906108c | 1 | /* Support routines for decoding "stabs" debugging information format. |
cf5b2f1b | 2 | |
32d0add0 | 3 | Copyright (C) 1986-2015 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 10 | (at your option) any later version. |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b | 17 | You should have received a copy of the GNU General Public License |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
19 | |
20 | /* Support routines for reading and decoding debugging information in | |
21 | the "stabs" format. This format is used with many systems that use | |
22 | the a.out object file format, as well as some systems that use | |
23 | COFF or ELF where the stabs data is placed in a special section. | |
c378eb4e | 24 | Avoid placing any object file format specific code in this file. */ |
c906108c SS |
25 | |
26 | #include "defs.h" | |
c906108c | 27 | #include "bfd.h" |
04ea0df1 | 28 | #include "gdb_obstack.h" |
c906108c SS |
29 | #include "symtab.h" |
30 | #include "gdbtypes.h" | |
31 | #include "expression.h" | |
32 | #include "symfile.h" | |
33 | #include "objfiles.h" | |
3e43a32a | 34 | #include "aout/stab_gnu.h" /* We always use GNU stabs, not native. */ |
c906108c SS |
35 | #include "libaout.h" |
36 | #include "aout/aout64.h" | |
37 | #include "gdb-stabs.h" | |
38 | #include "buildsym.h" | |
39 | #include "complaints.h" | |
40 | #include "demangle.h" | |
50f182aa | 41 | #include "gdb-demangle.h" |
c906108c | 42 | #include "language.h" |
d16aafd8 | 43 | #include "doublest.h" |
de17c821 DJ |
44 | #include "cp-abi.h" |
45 | #include "cp-support.h" | |
c906108c SS |
46 | #include <ctype.h> |
47 | ||
48 | /* Ask stabsread.h to define the vars it normally declares `extern'. */ | |
c5aa993b JM |
49 | #define EXTERN |
50 | /**/ | |
c906108c SS |
51 | #include "stabsread.h" /* Our own declarations */ |
52 | #undef EXTERN | |
53 | ||
a14ed312 | 54 | extern void _initialize_stabsread (void); |
392a587b | 55 | |
52059ffd TT |
56 | struct nextfield |
57 | { | |
58 | struct nextfield *next; | |
59 | ||
60 | /* This is the raw visibility from the stab. It is not checked | |
61 | for being one of the visibilities we recognize, so code which | |
62 | examines this field better be able to deal. */ | |
63 | int visibility; | |
64 | ||
65 | struct field field; | |
66 | }; | |
67 | ||
68 | struct next_fnfieldlist | |
69 | { | |
70 | struct next_fnfieldlist *next; | |
71 | struct fn_fieldlist fn_fieldlist; | |
72 | }; | |
73 | ||
c906108c SS |
74 | /* The routines that read and process a complete stabs for a C struct or |
75 | C++ class pass lists of data member fields and lists of member function | |
76 | fields in an instance of a field_info structure, as defined below. | |
77 | This is part of some reorganization of low level C++ support and is | |
c378eb4e | 78 | expected to eventually go away... (FIXME) */ |
c906108c SS |
79 | |
80 | struct field_info | |
c5aa993b | 81 | { |
52059ffd TT |
82 | struct nextfield *list; |
83 | struct next_fnfieldlist *fnlist; | |
c5aa993b | 84 | }; |
c906108c SS |
85 | |
86 | static void | |
a14ed312 KB |
87 | read_one_struct_field (struct field_info *, char **, char *, |
88 | struct type *, struct objfile *); | |
c906108c | 89 | |
a14ed312 | 90 | static struct type *dbx_alloc_type (int[2], struct objfile *); |
c906108c | 91 | |
94e10a22 | 92 | static long read_huge_number (char **, int, int *, int); |
c906108c | 93 | |
a14ed312 | 94 | static struct type *error_type (char **, struct objfile *); |
c906108c SS |
95 | |
96 | static void | |
a14ed312 KB |
97 | patch_block_stabs (struct pending *, struct pending_stabs *, |
98 | struct objfile *); | |
c906108c | 99 | |
46cb6474 | 100 | static void fix_common_block (struct symbol *, CORE_ADDR); |
c906108c | 101 | |
a14ed312 | 102 | static int read_type_number (char **, int *); |
c906108c | 103 | |
a7a48797 EZ |
104 | static struct type *read_type (char **, struct objfile *); |
105 | ||
94e10a22 | 106 | static struct type *read_range_type (char **, int[2], int, struct objfile *); |
c906108c | 107 | |
a14ed312 | 108 | static struct type *read_sun_builtin_type (char **, int[2], struct objfile *); |
c906108c | 109 | |
a14ed312 KB |
110 | static struct type *read_sun_floating_type (char **, int[2], |
111 | struct objfile *); | |
c906108c | 112 | |
a14ed312 | 113 | static struct type *read_enum_type (char **, struct type *, struct objfile *); |
c906108c | 114 | |
46bf5051 | 115 | static struct type *rs6000_builtin_type (int, struct objfile *); |
c906108c SS |
116 | |
117 | static int | |
a14ed312 KB |
118 | read_member_functions (struct field_info *, char **, struct type *, |
119 | struct objfile *); | |
c906108c SS |
120 | |
121 | static int | |
a14ed312 KB |
122 | read_struct_fields (struct field_info *, char **, struct type *, |
123 | struct objfile *); | |
c906108c SS |
124 | |
125 | static int | |
a14ed312 KB |
126 | read_baseclasses (struct field_info *, char **, struct type *, |
127 | struct objfile *); | |
c906108c SS |
128 | |
129 | static int | |
a14ed312 KB |
130 | read_tilde_fields (struct field_info *, char **, struct type *, |
131 | struct objfile *); | |
c906108c | 132 | |
a14ed312 | 133 | static int attach_fn_fields_to_type (struct field_info *, struct type *); |
c906108c | 134 | |
570b8f7c AC |
135 | static int attach_fields_to_type (struct field_info *, struct type *, |
136 | struct objfile *); | |
c906108c | 137 | |
a14ed312 | 138 | static struct type *read_struct_type (char **, struct type *, |
2ae1c2d2 | 139 | enum type_code, |
a14ed312 | 140 | struct objfile *); |
c906108c | 141 | |
a14ed312 KB |
142 | static struct type *read_array_type (char **, struct type *, |
143 | struct objfile *); | |
c906108c | 144 | |
ad2f7632 | 145 | static struct field *read_args (char **, int, struct objfile *, int *, int *); |
c906108c | 146 | |
bf362611 | 147 | static void add_undefined_type (struct type *, int[2]); |
a7a48797 | 148 | |
c906108c | 149 | static int |
a14ed312 KB |
150 | read_cpp_abbrev (struct field_info *, char **, struct type *, |
151 | struct objfile *); | |
c906108c | 152 | |
7e1d63ec AF |
153 | static char *find_name_end (char *name); |
154 | ||
a14ed312 | 155 | static int process_reference (char **string); |
c906108c | 156 | |
a14ed312 | 157 | void stabsread_clear_cache (void); |
7be570e7 | 158 | |
8343f86c DJ |
159 | static const char vptr_name[] = "_vptr$"; |
160 | static const char vb_name[] = "_vb$"; | |
c906108c | 161 | |
23136709 KB |
162 | static void |
163 | invalid_cpp_abbrev_complaint (const char *arg1) | |
164 | { | |
e2e0b3e5 | 165 | complaint (&symfile_complaints, _("invalid C++ abbreviation `%s'"), arg1); |
23136709 | 166 | } |
c906108c | 167 | |
23136709 | 168 | static void |
49b0b195 | 169 | reg_value_complaint (int regnum, int num_regs, const char *sym) |
23136709 KB |
170 | { |
171 | complaint (&symfile_complaints, | |
e2e0b3e5 | 172 | _("register number %d too large (max %d) in symbol %s"), |
49b0b195 | 173 | regnum, num_regs - 1, sym); |
23136709 | 174 | } |
c906108c | 175 | |
23136709 KB |
176 | static void |
177 | stabs_general_complaint (const char *arg1) | |
178 | { | |
179 | complaint (&symfile_complaints, "%s", arg1); | |
180 | } | |
c906108c | 181 | |
c906108c SS |
182 | /* Make a list of forward references which haven't been defined. */ |
183 | ||
184 | static struct type **undef_types; | |
185 | static int undef_types_allocated; | |
186 | static int undef_types_length; | |
187 | static struct symbol *current_symbol = NULL; | |
188 | ||
bf362611 JB |
189 | /* Make a list of nameless types that are undefined. |
190 | This happens when another type is referenced by its number | |
c378eb4e | 191 | before this type is actually defined. For instance "t(0,1)=k(0,2)" |
bf362611 JB |
192 | and type (0,2) is defined only later. */ |
193 | ||
194 | struct nat | |
195 | { | |
196 | int typenums[2]; | |
197 | struct type *type; | |
198 | }; | |
199 | static struct nat *noname_undefs; | |
200 | static int noname_undefs_allocated; | |
201 | static int noname_undefs_length; | |
202 | ||
c906108c SS |
203 | /* Check for and handle cretinous stabs symbol name continuation! */ |
204 | #define STABS_CONTINUE(pp,objfile) \ | |
205 | do { \ | |
206 | if (**(pp) == '\\' || (**(pp) == '?' && (*(pp))[1] == '\0')) \ | |
207 | *(pp) = next_symbol_text (objfile); \ | |
208 | } while (0) | |
fc474241 DE |
209 | |
210 | /* Vector of types defined so far, indexed by their type numbers. | |
211 | (In newer sun systems, dbx uses a pair of numbers in parens, | |
212 | as in "(SUBFILENUM,NUMWITHINSUBFILE)". | |
213 | Then these numbers must be translated through the type_translations | |
214 | hash table to get the index into the type vector.) */ | |
215 | ||
216 | static struct type **type_vector; | |
217 | ||
218 | /* Number of elements allocated for type_vector currently. */ | |
219 | ||
220 | static int type_vector_length; | |
221 | ||
222 | /* Initial size of type vector. Is realloc'd larger if needed, and | |
223 | realloc'd down to the size actually used, when completed. */ | |
224 | ||
225 | #define INITIAL_TYPE_VECTOR_LENGTH 160 | |
c906108c | 226 | \f |
c906108c SS |
227 | |
228 | /* Look up a dbx type-number pair. Return the address of the slot | |
229 | where the type for that number-pair is stored. | |
230 | The number-pair is in TYPENUMS. | |
231 | ||
232 | This can be used for finding the type associated with that pair | |
233 | or for associating a new type with the pair. */ | |
234 | ||
a7a48797 | 235 | static struct type ** |
46bf5051 | 236 | dbx_lookup_type (int typenums[2], struct objfile *objfile) |
c906108c | 237 | { |
52f0bd74 AC |
238 | int filenum = typenums[0]; |
239 | int index = typenums[1]; | |
c906108c | 240 | unsigned old_len; |
52f0bd74 AC |
241 | int real_filenum; |
242 | struct header_file *f; | |
c906108c SS |
243 | int f_orig_length; |
244 | ||
245 | if (filenum == -1) /* -1,-1 is for temporary types. */ | |
246 | return 0; | |
247 | ||
248 | if (filenum < 0 || filenum >= n_this_object_header_files) | |
249 | { | |
23136709 | 250 | complaint (&symfile_complaints, |
3e43a32a MS |
251 | _("Invalid symbol data: type number " |
252 | "(%d,%d) out of range at symtab pos %d."), | |
23136709 | 253 | filenum, index, symnum); |
c906108c SS |
254 | goto error_return; |
255 | } | |
256 | ||
257 | if (filenum == 0) | |
258 | { | |
259 | if (index < 0) | |
260 | { | |
261 | /* Caller wants address of address of type. We think | |
262 | that negative (rs6k builtin) types will never appear as | |
263 | "lvalues", (nor should they), so we stuff the real type | |
264 | pointer into a temp, and return its address. If referenced, | |
265 | this will do the right thing. */ | |
266 | static struct type *temp_type; | |
267 | ||
46bf5051 | 268 | temp_type = rs6000_builtin_type (index, objfile); |
c906108c SS |
269 | return &temp_type; |
270 | } | |
271 | ||
272 | /* Type is defined outside of header files. | |
c5aa993b | 273 | Find it in this object file's type vector. */ |
c906108c SS |
274 | if (index >= type_vector_length) |
275 | { | |
276 | old_len = type_vector_length; | |
277 | if (old_len == 0) | |
278 | { | |
279 | type_vector_length = INITIAL_TYPE_VECTOR_LENGTH; | |
280 | type_vector = (struct type **) | |
281 | xmalloc (type_vector_length * sizeof (struct type *)); | |
282 | } | |
283 | while (index >= type_vector_length) | |
284 | { | |
285 | type_vector_length *= 2; | |
286 | } | |
287 | type_vector = (struct type **) | |
288 | xrealloc ((char *) type_vector, | |
289 | (type_vector_length * sizeof (struct type *))); | |
290 | memset (&type_vector[old_len], 0, | |
291 | (type_vector_length - old_len) * sizeof (struct type *)); | |
c906108c SS |
292 | } |
293 | return (&type_vector[index]); | |
294 | } | |
295 | else | |
296 | { | |
297 | real_filenum = this_object_header_files[filenum]; | |
298 | ||
46bf5051 | 299 | if (real_filenum >= N_HEADER_FILES (objfile)) |
c906108c | 300 | { |
46bf5051 | 301 | static struct type *temp_type; |
c906108c | 302 | |
8a3fe4f8 | 303 | warning (_("GDB internal error: bad real_filenum")); |
c906108c SS |
304 | |
305 | error_return: | |
46bf5051 UW |
306 | temp_type = objfile_type (objfile)->builtin_error; |
307 | return &temp_type; | |
c906108c SS |
308 | } |
309 | ||
46bf5051 | 310 | f = HEADER_FILES (objfile) + real_filenum; |
c906108c SS |
311 | |
312 | f_orig_length = f->length; | |
313 | if (index >= f_orig_length) | |
314 | { | |
315 | while (index >= f->length) | |
316 | { | |
317 | f->length *= 2; | |
318 | } | |
319 | f->vector = (struct type **) | |
320 | xrealloc ((char *) f->vector, f->length * sizeof (struct type *)); | |
321 | memset (&f->vector[f_orig_length], 0, | |
322 | (f->length - f_orig_length) * sizeof (struct type *)); | |
323 | } | |
324 | return (&f->vector[index]); | |
325 | } | |
326 | } | |
327 | ||
328 | /* Make sure there is a type allocated for type numbers TYPENUMS | |
329 | and return the type object. | |
330 | This can create an empty (zeroed) type object. | |
331 | TYPENUMS may be (-1, -1) to return a new type object that is not | |
c378eb4e | 332 | put into the type vector, and so may not be referred to by number. */ |
c906108c SS |
333 | |
334 | static struct type * | |
35a2f538 | 335 | dbx_alloc_type (int typenums[2], struct objfile *objfile) |
c906108c | 336 | { |
52f0bd74 | 337 | struct type **type_addr; |
c906108c SS |
338 | |
339 | if (typenums[0] == -1) | |
340 | { | |
341 | return (alloc_type (objfile)); | |
342 | } | |
343 | ||
46bf5051 | 344 | type_addr = dbx_lookup_type (typenums, objfile); |
c906108c SS |
345 | |
346 | /* If we are referring to a type not known at all yet, | |
347 | allocate an empty type for it. | |
348 | We will fill it in later if we find out how. */ | |
349 | if (*type_addr == 0) | |
350 | { | |
351 | *type_addr = alloc_type (objfile); | |
352 | } | |
353 | ||
354 | return (*type_addr); | |
355 | } | |
356 | ||
357 | /* for all the stabs in a given stab vector, build appropriate types | |
c378eb4e | 358 | and fix their symbols in given symbol vector. */ |
c906108c SS |
359 | |
360 | static void | |
fba45db2 KB |
361 | patch_block_stabs (struct pending *symbols, struct pending_stabs *stabs, |
362 | struct objfile *objfile) | |
c906108c SS |
363 | { |
364 | int ii; | |
365 | char *name; | |
366 | char *pp; | |
367 | struct symbol *sym; | |
368 | ||
369 | if (stabs) | |
370 | { | |
c906108c | 371 | /* for all the stab entries, find their corresponding symbols and |
c378eb4e | 372 | patch their types! */ |
c5aa993b | 373 | |
c906108c SS |
374 | for (ii = 0; ii < stabs->count; ++ii) |
375 | { | |
376 | name = stabs->stab[ii]; | |
c5aa993b | 377 | pp = (char *) strchr (name, ':'); |
8fb822e0 | 378 | gdb_assert (pp); /* Must find a ':' or game's over. */ |
c906108c SS |
379 | while (pp[1] == ':') |
380 | { | |
c5aa993b JM |
381 | pp += 2; |
382 | pp = (char *) strchr (pp, ':'); | |
c906108c | 383 | } |
c5aa993b | 384 | sym = find_symbol_in_list (symbols, name, pp - name); |
c906108c SS |
385 | if (!sym) |
386 | { | |
387 | /* FIXME-maybe: it would be nice if we noticed whether | |
c5aa993b JM |
388 | the variable was defined *anywhere*, not just whether |
389 | it is defined in this compilation unit. But neither | |
390 | xlc or GCC seem to need such a definition, and until | |
391 | we do psymtabs (so that the minimal symbols from all | |
392 | compilation units are available now), I'm not sure | |
393 | how to get the information. */ | |
c906108c SS |
394 | |
395 | /* On xcoff, if a global is defined and never referenced, | |
c5aa993b JM |
396 | ld will remove it from the executable. There is then |
397 | a N_GSYM stab for it, but no regular (C_EXT) symbol. */ | |
e623cf5d | 398 | sym = allocate_symbol (objfile); |
176620f1 | 399 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
f1e6e072 | 400 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
3567439c | 401 | SYMBOL_SET_LINKAGE_NAME |
10f0c4bb TT |
402 | (sym, obstack_copy0 (&objfile->objfile_obstack, |
403 | name, pp - name)); | |
c906108c | 404 | pp += 2; |
c5aa993b | 405 | if (*(pp - 1) == 'F' || *(pp - 1) == 'f') |
c906108c SS |
406 | { |
407 | /* I don't think the linker does this with functions, | |
408 | so as far as I know this is never executed. | |
409 | But it doesn't hurt to check. */ | |
410 | SYMBOL_TYPE (sym) = | |
411 | lookup_function_type (read_type (&pp, objfile)); | |
412 | } | |
413 | else | |
414 | { | |
415 | SYMBOL_TYPE (sym) = read_type (&pp, objfile); | |
416 | } | |
417 | add_symbol_to_list (sym, &global_symbols); | |
418 | } | |
419 | else | |
420 | { | |
421 | pp += 2; | |
c5aa993b | 422 | if (*(pp - 1) == 'F' || *(pp - 1) == 'f') |
c906108c SS |
423 | { |
424 | SYMBOL_TYPE (sym) = | |
425 | lookup_function_type (read_type (&pp, objfile)); | |
426 | } | |
427 | else | |
428 | { | |
429 | SYMBOL_TYPE (sym) = read_type (&pp, objfile); | |
430 | } | |
431 | } | |
432 | } | |
433 | } | |
434 | } | |
c906108c | 435 | \f |
c5aa993b | 436 | |
c906108c SS |
437 | /* Read a number by which a type is referred to in dbx data, |
438 | or perhaps read a pair (FILENUM, TYPENUM) in parentheses. | |
439 | Just a single number N is equivalent to (0,N). | |
440 | Return the two numbers by storing them in the vector TYPENUMS. | |
441 | TYPENUMS will then be used as an argument to dbx_lookup_type. | |
442 | ||
443 | Returns 0 for success, -1 for error. */ | |
444 | ||
445 | static int | |
aa1ee363 | 446 | read_type_number (char **pp, int *typenums) |
c906108c SS |
447 | { |
448 | int nbits; | |
433759f7 | 449 | |
c906108c SS |
450 | if (**pp == '(') |
451 | { | |
452 | (*pp)++; | |
94e10a22 | 453 | typenums[0] = read_huge_number (pp, ',', &nbits, 0); |
c5aa993b JM |
454 | if (nbits != 0) |
455 | return -1; | |
94e10a22 | 456 | typenums[1] = read_huge_number (pp, ')', &nbits, 0); |
c5aa993b JM |
457 | if (nbits != 0) |
458 | return -1; | |
c906108c SS |
459 | } |
460 | else | |
461 | { | |
462 | typenums[0] = 0; | |
94e10a22 | 463 | typenums[1] = read_huge_number (pp, 0, &nbits, 0); |
c5aa993b JM |
464 | if (nbits != 0) |
465 | return -1; | |
c906108c SS |
466 | } |
467 | return 0; | |
468 | } | |
c906108c | 469 | \f |
c5aa993b | 470 | |
c906108c SS |
471 | #define VISIBILITY_PRIVATE '0' /* Stabs character for private field */ |
472 | #define VISIBILITY_PROTECTED '1' /* Stabs character for protected fld */ | |
473 | #define VISIBILITY_PUBLIC '2' /* Stabs character for public field */ | |
474 | #define VISIBILITY_IGNORE '9' /* Optimized out or zero length */ | |
475 | ||
c906108c | 476 | /* Structure for storing pointers to reference definitions for fast lookup |
c378eb4e | 477 | during "process_later". */ |
c906108c SS |
478 | |
479 | struct ref_map | |
480 | { | |
481 | char *stabs; | |
482 | CORE_ADDR value; | |
483 | struct symbol *sym; | |
484 | }; | |
485 | ||
486 | #define MAX_CHUNK_REFS 100 | |
487 | #define REF_CHUNK_SIZE (MAX_CHUNK_REFS * sizeof (struct ref_map)) | |
488 | #define REF_MAP_SIZE(ref_chunk) ((ref_chunk) * REF_CHUNK_SIZE) | |
489 | ||
c5aa993b | 490 | static struct ref_map *ref_map; |
c906108c | 491 | |
c378eb4e | 492 | /* Ptr to free cell in chunk's linked list. */ |
c5aa993b | 493 | static int ref_count = 0; |
c906108c | 494 | |
c378eb4e | 495 | /* Number of chunks malloced. */ |
c906108c SS |
496 | static int ref_chunk = 0; |
497 | ||
7be570e7 | 498 | /* This file maintains a cache of stabs aliases found in the symbol |
c378eb4e MS |
499 | table. If the symbol table changes, this cache must be cleared |
500 | or we are left holding onto data in invalid obstacks. */ | |
7be570e7 | 501 | void |
fba45db2 | 502 | stabsread_clear_cache (void) |
7be570e7 JM |
503 | { |
504 | ref_count = 0; | |
505 | ref_chunk = 0; | |
506 | } | |
507 | ||
c906108c SS |
508 | /* Create array of pointers mapping refids to symbols and stab strings. |
509 | Add pointers to reference definition symbols and/or their values as we | |
c378eb4e MS |
510 | find them, using their reference numbers as our index. |
511 | These will be used later when we resolve references. */ | |
c906108c | 512 | void |
fba45db2 | 513 | ref_add (int refnum, struct symbol *sym, char *stabs, CORE_ADDR value) |
c906108c SS |
514 | { |
515 | if (ref_count == 0) | |
516 | ref_chunk = 0; | |
517 | if (refnum >= ref_count) | |
518 | ref_count = refnum + 1; | |
519 | if (ref_count > ref_chunk * MAX_CHUNK_REFS) | |
520 | { | |
c5aa993b | 521 | int new_slots = ref_count - ref_chunk * MAX_CHUNK_REFS; |
c906108c | 522 | int new_chunks = new_slots / MAX_CHUNK_REFS + 1; |
433759f7 | 523 | |
c906108c SS |
524 | ref_map = (struct ref_map *) |
525 | xrealloc (ref_map, REF_MAP_SIZE (ref_chunk + new_chunks)); | |
433759f7 MS |
526 | memset (ref_map + ref_chunk * MAX_CHUNK_REFS, 0, |
527 | new_chunks * REF_CHUNK_SIZE); | |
c906108c SS |
528 | ref_chunk += new_chunks; |
529 | } | |
530 | ref_map[refnum].stabs = stabs; | |
531 | ref_map[refnum].sym = sym; | |
532 | ref_map[refnum].value = value; | |
533 | } | |
534 | ||
535 | /* Return defined sym for the reference REFNUM. */ | |
536 | struct symbol * | |
fba45db2 | 537 | ref_search (int refnum) |
c906108c SS |
538 | { |
539 | if (refnum < 0 || refnum > ref_count) | |
540 | return 0; | |
541 | return ref_map[refnum].sym; | |
542 | } | |
543 | ||
c906108c SS |
544 | /* Parse a reference id in STRING and return the resulting |
545 | reference number. Move STRING beyond the reference id. */ | |
546 | ||
c5aa993b | 547 | static int |
fba45db2 | 548 | process_reference (char **string) |
c906108c SS |
549 | { |
550 | char *p; | |
551 | int refnum = 0; | |
552 | ||
c5aa993b JM |
553 | if (**string != '#') |
554 | return 0; | |
555 | ||
c906108c SS |
556 | /* Advance beyond the initial '#'. */ |
557 | p = *string + 1; | |
558 | ||
c378eb4e | 559 | /* Read number as reference id. */ |
c906108c SS |
560 | while (*p && isdigit (*p)) |
561 | { | |
562 | refnum = refnum * 10 + *p - '0'; | |
563 | p++; | |
564 | } | |
565 | *string = p; | |
566 | return refnum; | |
567 | } | |
568 | ||
569 | /* If STRING defines a reference, store away a pointer to the reference | |
570 | definition for later use. Return the reference number. */ | |
571 | ||
572 | int | |
fba45db2 | 573 | symbol_reference_defined (char **string) |
c906108c SS |
574 | { |
575 | char *p = *string; | |
576 | int refnum = 0; | |
577 | ||
578 | refnum = process_reference (&p); | |
579 | ||
c378eb4e | 580 | /* Defining symbols end in '='. */ |
c5aa993b | 581 | if (*p == '=') |
c906108c | 582 | { |
c378eb4e | 583 | /* Symbol is being defined here. */ |
c906108c SS |
584 | *string = p + 1; |
585 | return refnum; | |
586 | } | |
587 | else | |
588 | { | |
c378eb4e | 589 | /* Must be a reference. Either the symbol has already been defined, |
c906108c SS |
590 | or this is a forward reference to it. */ |
591 | *string = p; | |
592 | return -1; | |
593 | } | |
594 | } | |
595 | ||
768a979c UW |
596 | static int |
597 | stab_reg_to_regnum (struct symbol *sym, struct gdbarch *gdbarch) | |
598 | { | |
599 | int regno = gdbarch_stab_reg_to_regnum (gdbarch, SYMBOL_VALUE (sym)); | |
600 | ||
601 | if (regno >= gdbarch_num_regs (gdbarch) | |
602 | + gdbarch_num_pseudo_regs (gdbarch)) | |
603 | { | |
604 | reg_value_complaint (regno, | |
605 | gdbarch_num_regs (gdbarch) | |
606 | + gdbarch_num_pseudo_regs (gdbarch), | |
607 | SYMBOL_PRINT_NAME (sym)); | |
608 | ||
c378eb4e | 609 | regno = gdbarch_sp_regnum (gdbarch); /* Known safe, though useless. */ |
768a979c UW |
610 | } |
611 | ||
612 | return regno; | |
613 | } | |
614 | ||
615 | static const struct symbol_register_ops stab_register_funcs = { | |
616 | stab_reg_to_regnum | |
617 | }; | |
618 | ||
f1e6e072 TT |
619 | /* The "aclass" indices for computed symbols. */ |
620 | ||
621 | static int stab_register_index; | |
622 | static int stab_regparm_index; | |
623 | ||
c906108c | 624 | struct symbol * |
fba45db2 KB |
625 | define_symbol (CORE_ADDR valu, char *string, int desc, int type, |
626 | struct objfile *objfile) | |
c906108c | 627 | { |
5e2b427d | 628 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
52f0bd74 | 629 | struct symbol *sym; |
7e1d63ec | 630 | char *p = (char *) find_name_end (string); |
c906108c SS |
631 | int deftype; |
632 | int synonym = 0; | |
52f0bd74 | 633 | int i; |
71c25dea | 634 | char *new_name = NULL; |
c906108c SS |
635 | |
636 | /* We would like to eliminate nameless symbols, but keep their types. | |
637 | E.g. stab entry ":t10=*2" should produce a type 10, which is a pointer | |
c378eb4e MS |
638 | to type 2, but, should not create a symbol to address that type. Since |
639 | the symbol will be nameless, there is no way any user can refer to it. */ | |
c906108c SS |
640 | |
641 | int nameless; | |
642 | ||
643 | /* Ignore syms with empty names. */ | |
644 | if (string[0] == 0) | |
645 | return 0; | |
646 | ||
c378eb4e | 647 | /* Ignore old-style symbols from cc -go. */ |
c906108c SS |
648 | if (p == 0) |
649 | return 0; | |
650 | ||
651 | while (p[1] == ':') | |
652 | { | |
c5aa993b JM |
653 | p += 2; |
654 | p = strchr (p, ':'); | |
681c238c MS |
655 | if (p == NULL) |
656 | { | |
657 | complaint (&symfile_complaints, | |
658 | _("Bad stabs string '%s'"), string); | |
659 | return NULL; | |
660 | } | |
c906108c SS |
661 | } |
662 | ||
663 | /* If a nameless stab entry, all we need is the type, not the symbol. | |
664 | e.g. ":t10=*2" or a nameless enum like " :T16=ered:0,green:1,blue:2,;" */ | |
665 | nameless = (p == string || ((string[0] == ' ') && (string[1] == ':'))); | |
666 | ||
e623cf5d | 667 | current_symbol = sym = allocate_symbol (objfile); |
c906108c | 668 | |
c906108c SS |
669 | if (processing_gcc_compilation) |
670 | { | |
671 | /* GCC 2.x puts the line number in desc. SunOS apparently puts in the | |
c5aa993b JM |
672 | number of bytes occupied by a type or object, which we ignore. */ |
673 | SYMBOL_LINE (sym) = desc; | |
c906108c SS |
674 | } |
675 | else | |
676 | { | |
c5aa993b | 677 | SYMBOL_LINE (sym) = 0; /* unknown */ |
c906108c SS |
678 | } |
679 | ||
025ac414 PM |
680 | SYMBOL_SET_LANGUAGE (sym, current_subfile->language, |
681 | &objfile->objfile_obstack); | |
682 | ||
c906108c SS |
683 | if (is_cplus_marker (string[0])) |
684 | { | |
685 | /* Special GNU C++ names. */ | |
686 | switch (string[1]) | |
687 | { | |
c5aa993b | 688 | case 't': |
1c9e8358 | 689 | SYMBOL_SET_LINKAGE_NAME (sym, "this"); |
c5aa993b | 690 | break; |
c906108c | 691 | |
c5aa993b | 692 | case 'v': /* $vtbl_ptr_type */ |
c5aa993b | 693 | goto normal; |
c906108c | 694 | |
c5aa993b | 695 | case 'e': |
1c9e8358 | 696 | SYMBOL_SET_LINKAGE_NAME (sym, "eh_throw"); |
c5aa993b | 697 | break; |
c906108c | 698 | |
c5aa993b JM |
699 | case '_': |
700 | /* This was an anonymous type that was never fixed up. */ | |
701 | goto normal; | |
c906108c | 702 | |
c5aa993b JM |
703 | case 'X': |
704 | /* SunPRO (3.0 at least) static variable encoding. */ | |
5e2b427d | 705 | if (gdbarch_static_transform_name_p (gdbarch)) |
149ad273 | 706 | goto normal; |
c378eb4e | 707 | /* ... fall through ... */ |
c906108c | 708 | |
c5aa993b | 709 | default: |
e2e0b3e5 | 710 | complaint (&symfile_complaints, _("Unknown C++ symbol name `%s'"), |
23136709 | 711 | string); |
c378eb4e | 712 | goto normal; /* Do *something* with it. */ |
c906108c SS |
713 | } |
714 | } | |
c906108c SS |
715 | else |
716 | { | |
717 | normal: | |
df8a16a1 | 718 | if (SYMBOL_LANGUAGE (sym) == language_cplus) |
71c25dea TT |
719 | { |
720 | char *name = alloca (p - string + 1); | |
433759f7 | 721 | |
71c25dea TT |
722 | memcpy (name, string, p - string); |
723 | name[p - string] = '\0'; | |
724 | new_name = cp_canonicalize_string (name); | |
71c25dea TT |
725 | } |
726 | if (new_name != NULL) | |
727 | { | |
04a679b8 | 728 | SYMBOL_SET_NAMES (sym, new_name, strlen (new_name), 1, objfile); |
71c25dea TT |
729 | xfree (new_name); |
730 | } | |
731 | else | |
04a679b8 | 732 | SYMBOL_SET_NAMES (sym, string, p - string, 1, objfile); |
45c58896 SW |
733 | |
734 | if (SYMBOL_LANGUAGE (sym) == language_cplus) | |
a10964d1 | 735 | cp_scan_for_anonymous_namespaces (sym, objfile); |
45c58896 | 736 | |
c906108c SS |
737 | } |
738 | p++; | |
739 | ||
740 | /* Determine the type of name being defined. */ | |
741 | #if 0 | |
742 | /* Getting GDB to correctly skip the symbol on an undefined symbol | |
743 | descriptor and not ever dump core is a very dodgy proposition if | |
744 | we do things this way. I say the acorn RISC machine can just | |
745 | fix their compiler. */ | |
746 | /* The Acorn RISC machine's compiler can put out locals that don't | |
747 | start with "234=" or "(3,4)=", so assume anything other than the | |
748 | deftypes we know how to handle is a local. */ | |
749 | if (!strchr ("cfFGpPrStTvVXCR", *p)) | |
750 | #else | |
751 | if (isdigit (*p) || *p == '(' || *p == '-') | |
752 | #endif | |
753 | deftype = 'l'; | |
754 | else | |
755 | deftype = *p++; | |
756 | ||
757 | switch (deftype) | |
758 | { | |
759 | case 'c': | |
760 | /* c is a special case, not followed by a type-number. | |
c5aa993b JM |
761 | SYMBOL:c=iVALUE for an integer constant symbol. |
762 | SYMBOL:c=rVALUE for a floating constant symbol. | |
763 | SYMBOL:c=eTYPE,INTVALUE for an enum constant symbol. | |
764 | e.g. "b:c=e6,0" for "const b = blob1" | |
765 | (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */ | |
c906108c SS |
766 | if (*p != '=') |
767 | { | |
f1e6e072 | 768 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
c906108c | 769 | SYMBOL_TYPE (sym) = error_type (&p, objfile); |
176620f1 | 770 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
771 | add_symbol_to_list (sym, &file_symbols); |
772 | return sym; | |
773 | } | |
774 | ++p; | |
775 | switch (*p++) | |
776 | { | |
777 | case 'r': | |
778 | { | |
779 | double d = atof (p); | |
4e38b386 | 780 | gdb_byte *dbl_valu; |
6ccb9162 | 781 | struct type *dbl_type; |
c906108c SS |
782 | |
783 | /* FIXME-if-picky-about-floating-accuracy: Should be using | |
784 | target arithmetic to get the value. real.c in GCC | |
785 | probably has the necessary code. */ | |
786 | ||
46bf5051 | 787 | dbl_type = objfile_type (objfile)->builtin_double; |
4e38b386 | 788 | dbl_valu = |
4a146b47 | 789 | obstack_alloc (&objfile->objfile_obstack, |
6ccb9162 UW |
790 | TYPE_LENGTH (dbl_type)); |
791 | store_typed_floating (dbl_valu, dbl_type, d); | |
792 | ||
793 | SYMBOL_TYPE (sym) = dbl_type; | |
c906108c | 794 | SYMBOL_VALUE_BYTES (sym) = dbl_valu; |
f1e6e072 | 795 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST_BYTES; |
c906108c SS |
796 | } |
797 | break; | |
798 | case 'i': | |
799 | { | |
800 | /* Defining integer constants this way is kind of silly, | |
801 | since 'e' constants allows the compiler to give not | |
802 | only the value, but the type as well. C has at least | |
803 | int, long, unsigned int, and long long as constant | |
804 | types; other languages probably should have at least | |
805 | unsigned as well as signed constants. */ | |
806 | ||
46bf5051 | 807 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_long; |
c906108c | 808 | SYMBOL_VALUE (sym) = atoi (p); |
f1e6e072 | 809 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
c906108c SS |
810 | } |
811 | break; | |
ec8a089a PM |
812 | |
813 | case 'c': | |
814 | { | |
815 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_char; | |
816 | SYMBOL_VALUE (sym) = atoi (p); | |
f1e6e072 | 817 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
ec8a089a PM |
818 | } |
819 | break; | |
820 | ||
821 | case 's': | |
822 | { | |
823 | struct type *range_type; | |
824 | int ind = 0; | |
825 | char quote = *p++; | |
ec8a089a PM |
826 | gdb_byte *string_local = (gdb_byte *) alloca (strlen (p)); |
827 | gdb_byte *string_value; | |
828 | ||
829 | if (quote != '\'' && quote != '"') | |
830 | { | |
f1e6e072 | 831 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
ec8a089a PM |
832 | SYMBOL_TYPE (sym) = error_type (&p, objfile); |
833 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; | |
834 | add_symbol_to_list (sym, &file_symbols); | |
835 | return sym; | |
836 | } | |
837 | ||
838 | /* Find matching quote, rejecting escaped quotes. */ | |
839 | while (*p && *p != quote) | |
840 | { | |
841 | if (*p == '\\' && p[1] == quote) | |
842 | { | |
843 | string_local[ind] = (gdb_byte) quote; | |
844 | ind++; | |
845 | p += 2; | |
846 | } | |
847 | else if (*p) | |
848 | { | |
849 | string_local[ind] = (gdb_byte) (*p); | |
850 | ind++; | |
851 | p++; | |
852 | } | |
853 | } | |
854 | if (*p != quote) | |
855 | { | |
f1e6e072 | 856 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
ec8a089a PM |
857 | SYMBOL_TYPE (sym) = error_type (&p, objfile); |
858 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; | |
859 | add_symbol_to_list (sym, &file_symbols); | |
860 | return sym; | |
861 | } | |
862 | ||
863 | /* NULL terminate the string. */ | |
864 | string_local[ind] = 0; | |
3e43a32a | 865 | range_type |
0c9c3474 SA |
866 | = create_static_range_type (NULL, |
867 | objfile_type (objfile)->builtin_int, | |
868 | 0, ind); | |
ec8a089a PM |
869 | SYMBOL_TYPE (sym) = create_array_type (NULL, |
870 | objfile_type (objfile)->builtin_char, | |
871 | range_type); | |
872 | string_value = obstack_alloc (&objfile->objfile_obstack, ind + 1); | |
873 | memcpy (string_value, string_local, ind + 1); | |
874 | p++; | |
875 | ||
876 | SYMBOL_VALUE_BYTES (sym) = string_value; | |
f1e6e072 | 877 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST_BYTES; |
ec8a089a PM |
878 | } |
879 | break; | |
880 | ||
c906108c SS |
881 | case 'e': |
882 | /* SYMBOL:c=eTYPE,INTVALUE for a constant symbol whose value | |
883 | can be represented as integral. | |
884 | e.g. "b:c=e6,0" for "const b = blob1" | |
885 | (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */ | |
886 | { | |
f1e6e072 | 887 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
c906108c SS |
888 | SYMBOL_TYPE (sym) = read_type (&p, objfile); |
889 | ||
890 | if (*p != ',') | |
891 | { | |
892 | SYMBOL_TYPE (sym) = error_type (&p, objfile); | |
893 | break; | |
894 | } | |
895 | ++p; | |
896 | ||
897 | /* If the value is too big to fit in an int (perhaps because | |
898 | it is unsigned), or something like that, we silently get | |
899 | a bogus value. The type and everything else about it is | |
900 | correct. Ideally, we should be using whatever we have | |
901 | available for parsing unsigned and long long values, | |
902 | however. */ | |
903 | SYMBOL_VALUE (sym) = atoi (p); | |
904 | } | |
905 | break; | |
906 | default: | |
907 | { | |
f1e6e072 | 908 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
c906108c SS |
909 | SYMBOL_TYPE (sym) = error_type (&p, objfile); |
910 | } | |
911 | } | |
176620f1 | 912 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
913 | add_symbol_to_list (sym, &file_symbols); |
914 | return sym; | |
915 | ||
916 | case 'C': | |
917 | /* The name of a caught exception. */ | |
918 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
f1e6e072 | 919 | SYMBOL_ACLASS_INDEX (sym) = LOC_LABEL; |
176620f1 | 920 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
921 | SYMBOL_VALUE_ADDRESS (sym) = valu; |
922 | add_symbol_to_list (sym, &local_symbols); | |
923 | break; | |
924 | ||
925 | case 'f': | |
926 | /* A static function definition. */ | |
927 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
f1e6e072 | 928 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
176620f1 | 929 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
930 | add_symbol_to_list (sym, &file_symbols); |
931 | /* fall into process_function_types. */ | |
932 | ||
933 | process_function_types: | |
934 | /* Function result types are described as the result type in stabs. | |
c5aa993b JM |
935 | We need to convert this to the function-returning-type-X type |
936 | in GDB. E.g. "int" is converted to "function returning int". */ | |
c906108c SS |
937 | if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_FUNC) |
938 | SYMBOL_TYPE (sym) = lookup_function_type (SYMBOL_TYPE (sym)); | |
939 | ||
1e698235 DJ |
940 | /* All functions in C++ have prototypes. Stabs does not offer an |
941 | explicit way to identify prototyped or unprototyped functions, | |
942 | but both GCC and Sun CC emit stabs for the "call-as" type rather | |
943 | than the "declared-as" type for unprototyped functions, so | |
944 | we treat all functions as if they were prototyped. This is used | |
945 | primarily for promotion when calling the function from GDB. */ | |
876cecd0 | 946 | TYPE_PROTOTYPED (SYMBOL_TYPE (sym)) = 1; |
c906108c | 947 | |
c378eb4e | 948 | /* fall into process_prototype_types. */ |
c906108c SS |
949 | |
950 | process_prototype_types: | |
951 | /* Sun acc puts declared types of arguments here. */ | |
952 | if (*p == ';') | |
953 | { | |
954 | struct type *ftype = SYMBOL_TYPE (sym); | |
955 | int nsemi = 0; | |
956 | int nparams = 0; | |
957 | char *p1 = p; | |
958 | ||
959 | /* Obtain a worst case guess for the number of arguments | |
960 | by counting the semicolons. */ | |
961 | while (*p1) | |
962 | { | |
963 | if (*p1++ == ';') | |
964 | nsemi++; | |
965 | } | |
966 | ||
c378eb4e | 967 | /* Allocate parameter information fields and fill them in. */ |
c906108c SS |
968 | TYPE_FIELDS (ftype) = (struct field *) |
969 | TYPE_ALLOC (ftype, nsemi * sizeof (struct field)); | |
970 | while (*p++ == ';') | |
971 | { | |
972 | struct type *ptype; | |
973 | ||
974 | /* A type number of zero indicates the start of varargs. | |
c5aa993b | 975 | FIXME: GDB currently ignores vararg functions. */ |
c906108c SS |
976 | if (p[0] == '0' && p[1] == '\0') |
977 | break; | |
978 | ptype = read_type (&p, objfile); | |
979 | ||
980 | /* The Sun compilers mark integer arguments, which should | |
c5aa993b | 981 | be promoted to the width of the calling conventions, with |
c378eb4e | 982 | a type which references itself. This type is turned into |
c5aa993b | 983 | a TYPE_CODE_VOID type by read_type, and we have to turn |
5e2b427d UW |
984 | it back into builtin_int here. |
985 | FIXME: Do we need a new builtin_promoted_int_arg ? */ | |
c906108c | 986 | if (TYPE_CODE (ptype) == TYPE_CODE_VOID) |
46bf5051 | 987 | ptype = objfile_type (objfile)->builtin_int; |
8176bb6d DJ |
988 | TYPE_FIELD_TYPE (ftype, nparams) = ptype; |
989 | TYPE_FIELD_ARTIFICIAL (ftype, nparams++) = 0; | |
c906108c SS |
990 | } |
991 | TYPE_NFIELDS (ftype) = nparams; | |
876cecd0 | 992 | TYPE_PROTOTYPED (ftype) = 1; |
c906108c SS |
993 | } |
994 | break; | |
995 | ||
996 | case 'F': | |
997 | /* A global function definition. */ | |
998 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
f1e6e072 | 999 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
176620f1 | 1000 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1001 | add_symbol_to_list (sym, &global_symbols); |
1002 | goto process_function_types; | |
1003 | ||
1004 | case 'G': | |
1005 | /* For a class G (global) symbol, it appears that the | |
c5aa993b JM |
1006 | value is not correct. It is necessary to search for the |
1007 | corresponding linker definition to find the value. | |
1008 | These definitions appear at the end of the namelist. */ | |
c906108c | 1009 | SYMBOL_TYPE (sym) = read_type (&p, objfile); |
f1e6e072 | 1010 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
176620f1 | 1011 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c | 1012 | /* Don't add symbol references to global_sym_chain. |
c5aa993b JM |
1013 | Symbol references don't have valid names and wont't match up with |
1014 | minimal symbols when the global_sym_chain is relocated. | |
1015 | We'll fixup symbol references when we fixup the defining symbol. */ | |
3567439c | 1016 | if (SYMBOL_LINKAGE_NAME (sym) && SYMBOL_LINKAGE_NAME (sym)[0] != '#') |
c906108c | 1017 | { |
3567439c | 1018 | i = hashname (SYMBOL_LINKAGE_NAME (sym)); |
c5aa993b JM |
1019 | SYMBOL_VALUE_CHAIN (sym) = global_sym_chain[i]; |
1020 | global_sym_chain[i] = sym; | |
c906108c SS |
1021 | } |
1022 | add_symbol_to_list (sym, &global_symbols); | |
1023 | break; | |
1024 | ||
1025 | /* This case is faked by a conditional above, | |
c5aa993b JM |
1026 | when there is no code letter in the dbx data. |
1027 | Dbx data never actually contains 'l'. */ | |
c906108c SS |
1028 | case 's': |
1029 | case 'l': | |
1030 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
f1e6e072 | 1031 | SYMBOL_ACLASS_INDEX (sym) = LOC_LOCAL; |
c906108c | 1032 | SYMBOL_VALUE (sym) = valu; |
176620f1 | 1033 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1034 | add_symbol_to_list (sym, &local_symbols); |
1035 | break; | |
1036 | ||
1037 | case 'p': | |
1038 | if (*p == 'F') | |
1039 | /* pF is a two-letter code that means a function parameter in Fortran. | |
1040 | The type-number specifies the type of the return value. | |
1041 | Translate it into a pointer-to-function type. */ | |
1042 | { | |
1043 | p++; | |
1044 | SYMBOL_TYPE (sym) | |
1045 | = lookup_pointer_type | |
c5aa993b | 1046 | (lookup_function_type (read_type (&p, objfile))); |
c906108c SS |
1047 | } |
1048 | else | |
1049 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
1050 | ||
f1e6e072 | 1051 | SYMBOL_ACLASS_INDEX (sym) = LOC_ARG; |
c906108c | 1052 | SYMBOL_VALUE (sym) = valu; |
176620f1 | 1053 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
2a2d4dc3 | 1054 | SYMBOL_IS_ARGUMENT (sym) = 1; |
c906108c SS |
1055 | add_symbol_to_list (sym, &local_symbols); |
1056 | ||
5e2b427d | 1057 | if (gdbarch_byte_order (gdbarch) != BFD_ENDIAN_BIG) |
c906108c SS |
1058 | { |
1059 | /* On little-endian machines, this crud is never necessary, | |
1060 | and, if the extra bytes contain garbage, is harmful. */ | |
1061 | break; | |
1062 | } | |
1063 | ||
1064 | /* If it's gcc-compiled, if it says `short', believe it. */ | |
f73e88f9 | 1065 | if (processing_gcc_compilation |
5e2b427d | 1066 | || gdbarch_believe_pcc_promotion (gdbarch)) |
c906108c SS |
1067 | break; |
1068 | ||
5e2b427d | 1069 | if (!gdbarch_believe_pcc_promotion (gdbarch)) |
7a292a7a | 1070 | { |
8ee56bcf AC |
1071 | /* If PCC says a parameter is a short or a char, it is |
1072 | really an int. */ | |
5e2b427d UW |
1073 | if (TYPE_LENGTH (SYMBOL_TYPE (sym)) |
1074 | < gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT | |
8ee56bcf | 1075 | && TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_INT) |
7a292a7a | 1076 | { |
8ee56bcf AC |
1077 | SYMBOL_TYPE (sym) = |
1078 | TYPE_UNSIGNED (SYMBOL_TYPE (sym)) | |
46bf5051 UW |
1079 | ? objfile_type (objfile)->builtin_unsigned_int |
1080 | : objfile_type (objfile)->builtin_int; | |
7a292a7a | 1081 | } |
8ee56bcf | 1082 | break; |
7a292a7a | 1083 | } |
c906108c SS |
1084 | |
1085 | case 'P': | |
1086 | /* acc seems to use P to declare the prototypes of functions that | |
1087 | are referenced by this file. gdb is not prepared to deal | |
1088 | with this extra information. FIXME, it ought to. */ | |
1089 | if (type == N_FUN) | |
1090 | { | |
1091 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
1092 | goto process_prototype_types; | |
1093 | } | |
c5aa993b | 1094 | /*FALLTHROUGH */ |
c906108c SS |
1095 | |
1096 | case 'R': | |
1097 | /* Parameter which is in a register. */ | |
1098 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
f1e6e072 | 1099 | SYMBOL_ACLASS_INDEX (sym) = stab_register_index; |
2a2d4dc3 | 1100 | SYMBOL_IS_ARGUMENT (sym) = 1; |
768a979c | 1101 | SYMBOL_VALUE (sym) = valu; |
176620f1 | 1102 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1103 | add_symbol_to_list (sym, &local_symbols); |
1104 | break; | |
1105 | ||
1106 | case 'r': | |
1107 | /* Register variable (either global or local). */ | |
1108 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
f1e6e072 | 1109 | SYMBOL_ACLASS_INDEX (sym) = stab_register_index; |
768a979c | 1110 | SYMBOL_VALUE (sym) = valu; |
176620f1 | 1111 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1112 | if (within_function) |
1113 | { | |
192cb3d4 MK |
1114 | /* Sun cc uses a pair of symbols, one 'p' and one 'r', with |
1115 | the same name to represent an argument passed in a | |
1116 | register. GCC uses 'P' for the same case. So if we find | |
1117 | such a symbol pair we combine it into one 'P' symbol. | |
1118 | For Sun cc we need to do this regardless of | |
1119 | stabs_argument_has_addr, because the compiler puts out | |
1120 | the 'p' symbol even if it never saves the argument onto | |
1121 | the stack. | |
1122 | ||
1123 | On most machines, we want to preserve both symbols, so | |
1124 | that we can still get information about what is going on | |
1125 | with the stack (VAX for computing args_printed, using | |
1126 | stack slots instead of saved registers in backtraces, | |
1127 | etc.). | |
c906108c SS |
1128 | |
1129 | Note that this code illegally combines | |
c5aa993b | 1130 | main(argc) struct foo argc; { register struct foo argc; } |
c906108c SS |
1131 | but this case is considered pathological and causes a warning |
1132 | from a decent compiler. */ | |
1133 | ||
1134 | if (local_symbols | |
1135 | && local_symbols->nsyms > 0 | |
5e2b427d | 1136 | && gdbarch_stabs_argument_has_addr (gdbarch, SYMBOL_TYPE (sym))) |
c906108c SS |
1137 | { |
1138 | struct symbol *prev_sym; | |
433759f7 | 1139 | |
c906108c SS |
1140 | prev_sym = local_symbols->symbol[local_symbols->nsyms - 1]; |
1141 | if ((SYMBOL_CLASS (prev_sym) == LOC_REF_ARG | |
1142 | || SYMBOL_CLASS (prev_sym) == LOC_ARG) | |
3567439c DJ |
1143 | && strcmp (SYMBOL_LINKAGE_NAME (prev_sym), |
1144 | SYMBOL_LINKAGE_NAME (sym)) == 0) | |
c906108c | 1145 | { |
f1e6e072 | 1146 | SYMBOL_ACLASS_INDEX (prev_sym) = stab_register_index; |
c906108c SS |
1147 | /* Use the type from the LOC_REGISTER; that is the type |
1148 | that is actually in that register. */ | |
1149 | SYMBOL_TYPE (prev_sym) = SYMBOL_TYPE (sym); | |
1150 | SYMBOL_VALUE (prev_sym) = SYMBOL_VALUE (sym); | |
1151 | sym = prev_sym; | |
1152 | break; | |
1153 | } | |
1154 | } | |
c5aa993b | 1155 | add_symbol_to_list (sym, &local_symbols); |
c906108c SS |
1156 | } |
1157 | else | |
c5aa993b | 1158 | add_symbol_to_list (sym, &file_symbols); |
c906108c SS |
1159 | break; |
1160 | ||
1161 | case 'S': | |
c378eb4e | 1162 | /* Static symbol at top level of file. */ |
c906108c | 1163 | SYMBOL_TYPE (sym) = read_type (&p, objfile); |
f1e6e072 | 1164 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
c906108c | 1165 | SYMBOL_VALUE_ADDRESS (sym) = valu; |
5e2b427d UW |
1166 | if (gdbarch_static_transform_name_p (gdbarch) |
1167 | && gdbarch_static_transform_name (gdbarch, | |
3567439c DJ |
1168 | SYMBOL_LINKAGE_NAME (sym)) |
1169 | != SYMBOL_LINKAGE_NAME (sym)) | |
c5aa993b | 1170 | { |
3b7344d5 | 1171 | struct bound_minimal_symbol msym; |
433759f7 | 1172 | |
3e43a32a MS |
1173 | msym = lookup_minimal_symbol (SYMBOL_LINKAGE_NAME (sym), |
1174 | NULL, objfile); | |
3b7344d5 | 1175 | if (msym.minsym != NULL) |
c5aa993b | 1176 | { |
0d5cff50 | 1177 | const char *new_name = gdbarch_static_transform_name |
3567439c | 1178 | (gdbarch, SYMBOL_LINKAGE_NAME (sym)); |
433759f7 | 1179 | |
3567439c | 1180 | SYMBOL_SET_LINKAGE_NAME (sym, new_name); |
77e371c0 | 1181 | SYMBOL_VALUE_ADDRESS (sym) = BMSYMBOL_VALUE_ADDRESS (msym); |
c5aa993b JM |
1182 | } |
1183 | } | |
176620f1 | 1184 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1185 | add_symbol_to_list (sym, &file_symbols); |
1186 | break; | |
1187 | ||
1188 | case 't': | |
52eea4ce JB |
1189 | /* In Ada, there is no distinction between typedef and non-typedef; |
1190 | any type declaration implicitly has the equivalent of a typedef, | |
c378eb4e | 1191 | and thus 't' is in fact equivalent to 'Tt'. |
52eea4ce JB |
1192 | |
1193 | Therefore, for Ada units, we check the character immediately | |
1194 | before the 't', and if we do not find a 'T', then make sure to | |
1195 | create the associated symbol in the STRUCT_DOMAIN ('t' definitions | |
1196 | will be stored in the VAR_DOMAIN). If the symbol was indeed | |
1197 | defined as 'Tt' then the STRUCT_DOMAIN symbol will be created | |
1198 | elsewhere, so we don't need to take care of that. | |
1199 | ||
1200 | This is important to do, because of forward references: | |
1201 | The cleanup of undefined types stored in undef_types only uses | |
1202 | STRUCT_DOMAIN symbols to perform the replacement. */ | |
1203 | synonym = (SYMBOL_LANGUAGE (sym) == language_ada && p[-2] != 'T'); | |
1204 | ||
e2cd42dd | 1205 | /* Typedef */ |
c906108c SS |
1206 | SYMBOL_TYPE (sym) = read_type (&p, objfile); |
1207 | ||
1208 | /* For a nameless type, we don't want a create a symbol, thus we | |
c378eb4e | 1209 | did not use `sym'. Return without further processing. */ |
c5aa993b JM |
1210 | if (nameless) |
1211 | return NULL; | |
c906108c | 1212 | |
f1e6e072 | 1213 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
c906108c | 1214 | SYMBOL_VALUE (sym) = valu; |
176620f1 | 1215 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c | 1216 | /* C++ vagaries: we may have a type which is derived from |
c5aa993b JM |
1217 | a base type which did not have its name defined when the |
1218 | derived class was output. We fill in the derived class's | |
1219 | base part member's name here in that case. */ | |
c906108c SS |
1220 | if (TYPE_NAME (SYMBOL_TYPE (sym)) != NULL) |
1221 | if ((TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_STRUCT | |
1222 | || TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_UNION) | |
1223 | && TYPE_N_BASECLASSES (SYMBOL_TYPE (sym))) | |
1224 | { | |
1225 | int j; | |
433759f7 | 1226 | |
c906108c SS |
1227 | for (j = TYPE_N_BASECLASSES (SYMBOL_TYPE (sym)) - 1; j >= 0; j--) |
1228 | if (TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym), j) == 0) | |
1229 | TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym), j) = | |
1230 | type_name_no_tag (TYPE_BASECLASS (SYMBOL_TYPE (sym), j)); | |
1231 | } | |
1232 | ||
1233 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == NULL) | |
1234 | { | |
1235 | /* gcc-2.6 or later (when using -fvtable-thunks) | |
1236 | emits a unique named type for a vtable entry. | |
c378eb4e | 1237 | Some gdb code depends on that specific name. */ |
c906108c SS |
1238 | extern const char vtbl_ptr_name[]; |
1239 | ||
1240 | if ((TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_PTR | |
3567439c | 1241 | && strcmp (SYMBOL_LINKAGE_NAME (sym), vtbl_ptr_name)) |
c906108c SS |
1242 | || TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_FUNC) |
1243 | { | |
1244 | /* If we are giving a name to a type such as "pointer to | |
c5aa993b JM |
1245 | foo" or "function returning foo", we better not set |
1246 | the TYPE_NAME. If the program contains "typedef char | |
1247 | *caddr_t;", we don't want all variables of type char | |
1248 | * to print as caddr_t. This is not just a | |
1249 | consequence of GDB's type management; PCC and GCC (at | |
1250 | least through version 2.4) both output variables of | |
1251 | either type char * or caddr_t with the type number | |
1252 | defined in the 't' symbol for caddr_t. If a future | |
1253 | compiler cleans this up it GDB is not ready for it | |
1254 | yet, but if it becomes ready we somehow need to | |
1255 | disable this check (without breaking the PCC/GCC2.4 | |
1256 | case). | |
1257 | ||
1258 | Sigh. | |
1259 | ||
1260 | Fortunately, this check seems not to be necessary | |
1261 | for anything except pointers or functions. */ | |
c378eb4e MS |
1262 | /* ezannoni: 2000-10-26. This seems to apply for |
1263 | versions of gcc older than 2.8. This was the original | |
49d97c60 | 1264 | problem: with the following code gdb would tell that |
c378eb4e MS |
1265 | the type for name1 is caddr_t, and func is char(). |
1266 | ||
49d97c60 EZ |
1267 | typedef char *caddr_t; |
1268 | char *name2; | |
1269 | struct x | |
1270 | { | |
c378eb4e | 1271 | char *name1; |
49d97c60 EZ |
1272 | } xx; |
1273 | char *func() | |
1274 | { | |
1275 | } | |
1276 | main () {} | |
1277 | */ | |
1278 | ||
c378eb4e | 1279 | /* Pascal accepts names for pointer types. */ |
49d97c60 EZ |
1280 | if (current_subfile->language == language_pascal) |
1281 | { | |
3567439c | 1282 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_LINKAGE_NAME (sym); |
49d97c60 | 1283 | } |
c906108c SS |
1284 | } |
1285 | else | |
3567439c | 1286 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_LINKAGE_NAME (sym); |
c906108c SS |
1287 | } |
1288 | ||
1289 | add_symbol_to_list (sym, &file_symbols); | |
52eea4ce JB |
1290 | |
1291 | if (synonym) | |
1292 | { | |
1293 | /* Create the STRUCT_DOMAIN clone. */ | |
e623cf5d | 1294 | struct symbol *struct_sym = allocate_symbol (objfile); |
52eea4ce JB |
1295 | |
1296 | *struct_sym = *sym; | |
f1e6e072 | 1297 | SYMBOL_ACLASS_INDEX (struct_sym) = LOC_TYPEDEF; |
52eea4ce JB |
1298 | SYMBOL_VALUE (struct_sym) = valu; |
1299 | SYMBOL_DOMAIN (struct_sym) = STRUCT_DOMAIN; | |
1300 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) | |
3e43a32a MS |
1301 | TYPE_NAME (SYMBOL_TYPE (sym)) |
1302 | = obconcat (&objfile->objfile_obstack, | |
1303 | SYMBOL_LINKAGE_NAME (sym), | |
1304 | (char *) NULL); | |
52eea4ce JB |
1305 | add_symbol_to_list (struct_sym, &file_symbols); |
1306 | } | |
1307 | ||
c906108c SS |
1308 | break; |
1309 | ||
1310 | case 'T': | |
1311 | /* Struct, union, or enum tag. For GNU C++, this can be be followed | |
c5aa993b | 1312 | by 't' which means we are typedef'ing it as well. */ |
c906108c SS |
1313 | synonym = *p == 't'; |
1314 | ||
1315 | if (synonym) | |
1316 | p++; | |
c906108c SS |
1317 | |
1318 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
25caa7a8 | 1319 | |
c906108c | 1320 | /* For a nameless type, we don't want a create a symbol, thus we |
c378eb4e | 1321 | did not use `sym'. Return without further processing. */ |
c5aa993b JM |
1322 | if (nameless) |
1323 | return NULL; | |
c906108c | 1324 | |
f1e6e072 | 1325 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
c906108c | 1326 | SYMBOL_VALUE (sym) = valu; |
176620f1 | 1327 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 1328 | if (TYPE_TAG_NAME (SYMBOL_TYPE (sym)) == 0) |
3e43a32a MS |
1329 | TYPE_TAG_NAME (SYMBOL_TYPE (sym)) |
1330 | = obconcat (&objfile->objfile_obstack, | |
1331 | SYMBOL_LINKAGE_NAME (sym), | |
1332 | (char *) NULL); | |
c906108c SS |
1333 | add_symbol_to_list (sym, &file_symbols); |
1334 | ||
1335 | if (synonym) | |
1336 | { | |
c378eb4e | 1337 | /* Clone the sym and then modify it. */ |
e623cf5d | 1338 | struct symbol *typedef_sym = allocate_symbol (objfile); |
433759f7 | 1339 | |
c906108c | 1340 | *typedef_sym = *sym; |
f1e6e072 | 1341 | SYMBOL_ACLASS_INDEX (typedef_sym) = LOC_TYPEDEF; |
c906108c | 1342 | SYMBOL_VALUE (typedef_sym) = valu; |
176620f1 | 1343 | SYMBOL_DOMAIN (typedef_sym) = VAR_DOMAIN; |
c906108c | 1344 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) |
3e43a32a MS |
1345 | TYPE_NAME (SYMBOL_TYPE (sym)) |
1346 | = obconcat (&objfile->objfile_obstack, | |
1347 | SYMBOL_LINKAGE_NAME (sym), | |
1348 | (char *) NULL); | |
c906108c SS |
1349 | add_symbol_to_list (typedef_sym, &file_symbols); |
1350 | } | |
1351 | break; | |
1352 | ||
1353 | case 'V': | |
c378eb4e | 1354 | /* Static symbol of local scope. */ |
c906108c | 1355 | SYMBOL_TYPE (sym) = read_type (&p, objfile); |
f1e6e072 | 1356 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
c906108c | 1357 | SYMBOL_VALUE_ADDRESS (sym) = valu; |
5e2b427d UW |
1358 | if (gdbarch_static_transform_name_p (gdbarch) |
1359 | && gdbarch_static_transform_name (gdbarch, | |
3567439c DJ |
1360 | SYMBOL_LINKAGE_NAME (sym)) |
1361 | != SYMBOL_LINKAGE_NAME (sym)) | |
c5aa993b | 1362 | { |
3b7344d5 | 1363 | struct bound_minimal_symbol msym; |
433759f7 MS |
1364 | |
1365 | msym = lookup_minimal_symbol (SYMBOL_LINKAGE_NAME (sym), | |
1366 | NULL, objfile); | |
3b7344d5 | 1367 | if (msym.minsym != NULL) |
c5aa993b | 1368 | { |
0d5cff50 | 1369 | const char *new_name = gdbarch_static_transform_name |
3567439c | 1370 | (gdbarch, SYMBOL_LINKAGE_NAME (sym)); |
433759f7 | 1371 | |
3567439c | 1372 | SYMBOL_SET_LINKAGE_NAME (sym, new_name); |
77e371c0 | 1373 | SYMBOL_VALUE_ADDRESS (sym) = BMSYMBOL_VALUE_ADDRESS (msym); |
c5aa993b JM |
1374 | } |
1375 | } | |
176620f1 | 1376 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1377 | add_symbol_to_list (sym, &local_symbols); |
1378 | break; | |
1379 | ||
1380 | case 'v': | |
1381 | /* Reference parameter */ | |
1382 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
f1e6e072 | 1383 | SYMBOL_ACLASS_INDEX (sym) = LOC_REF_ARG; |
2a2d4dc3 | 1384 | SYMBOL_IS_ARGUMENT (sym) = 1; |
c906108c | 1385 | SYMBOL_VALUE (sym) = valu; |
176620f1 | 1386 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1387 | add_symbol_to_list (sym, &local_symbols); |
1388 | break; | |
1389 | ||
1390 | case 'a': | |
1391 | /* Reference parameter which is in a register. */ | |
1392 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
f1e6e072 | 1393 | SYMBOL_ACLASS_INDEX (sym) = stab_regparm_index; |
2a2d4dc3 | 1394 | SYMBOL_IS_ARGUMENT (sym) = 1; |
768a979c | 1395 | SYMBOL_VALUE (sym) = valu; |
176620f1 | 1396 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1397 | add_symbol_to_list (sym, &local_symbols); |
1398 | break; | |
1399 | ||
1400 | case 'X': | |
1401 | /* This is used by Sun FORTRAN for "function result value". | |
c5aa993b JM |
1402 | Sun claims ("dbx and dbxtool interfaces", 2nd ed) |
1403 | that Pascal uses it too, but when I tried it Pascal used | |
1404 | "x:3" (local symbol) instead. */ | |
c906108c | 1405 | SYMBOL_TYPE (sym) = read_type (&p, objfile); |
f1e6e072 | 1406 | SYMBOL_ACLASS_INDEX (sym) = LOC_LOCAL; |
c906108c | 1407 | SYMBOL_VALUE (sym) = valu; |
176620f1 | 1408 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1409 | add_symbol_to_list (sym, &local_symbols); |
1410 | break; | |
c906108c SS |
1411 | |
1412 | default: | |
1413 | SYMBOL_TYPE (sym) = error_type (&p, objfile); | |
f1e6e072 | 1414 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
c906108c | 1415 | SYMBOL_VALUE (sym) = 0; |
176620f1 | 1416 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1417 | add_symbol_to_list (sym, &file_symbols); |
1418 | break; | |
1419 | } | |
1420 | ||
192cb3d4 MK |
1421 | /* Some systems pass variables of certain types by reference instead |
1422 | of by value, i.e. they will pass the address of a structure (in a | |
1423 | register or on the stack) instead of the structure itself. */ | |
c906108c | 1424 | |
5e2b427d | 1425 | if (gdbarch_stabs_argument_has_addr (gdbarch, SYMBOL_TYPE (sym)) |
2a2d4dc3 | 1426 | && SYMBOL_IS_ARGUMENT (sym)) |
c906108c | 1427 | { |
2a2d4dc3 | 1428 | /* We have to convert LOC_REGISTER to LOC_REGPARM_ADDR (for |
192cb3d4 | 1429 | variables passed in a register). */ |
2a2d4dc3 | 1430 | if (SYMBOL_CLASS (sym) == LOC_REGISTER) |
f1e6e072 | 1431 | SYMBOL_ACLASS_INDEX (sym) = LOC_REGPARM_ADDR; |
192cb3d4 MK |
1432 | /* Likewise for converting LOC_ARG to LOC_REF_ARG (for the 7th |
1433 | and subsequent arguments on SPARC, for example). */ | |
1434 | else if (SYMBOL_CLASS (sym) == LOC_ARG) | |
f1e6e072 | 1435 | SYMBOL_ACLASS_INDEX (sym) = LOC_REF_ARG; |
c906108c SS |
1436 | } |
1437 | ||
c906108c SS |
1438 | return sym; |
1439 | } | |
1440 | ||
c906108c SS |
1441 | /* Skip rest of this symbol and return an error type. |
1442 | ||
1443 | General notes on error recovery: error_type always skips to the | |
1444 | end of the symbol (modulo cretinous dbx symbol name continuation). | |
1445 | Thus code like this: | |
1446 | ||
1447 | if (*(*pp)++ != ';') | |
c5aa993b | 1448 | return error_type (pp, objfile); |
c906108c SS |
1449 | |
1450 | is wrong because if *pp starts out pointing at '\0' (typically as the | |
1451 | result of an earlier error), it will be incremented to point to the | |
1452 | start of the next symbol, which might produce strange results, at least | |
1453 | if you run off the end of the string table. Instead use | |
1454 | ||
1455 | if (**pp != ';') | |
c5aa993b | 1456 | return error_type (pp, objfile); |
c906108c SS |
1457 | ++*pp; |
1458 | ||
1459 | or | |
1460 | ||
1461 | if (**pp != ';') | |
c5aa993b | 1462 | foo = error_type (pp, objfile); |
c906108c | 1463 | else |
c5aa993b | 1464 | ++*pp; |
c906108c SS |
1465 | |
1466 | And in case it isn't obvious, the point of all this hair is so the compiler | |
1467 | can define new types and new syntaxes, and old versions of the | |
1468 | debugger will be able to read the new symbol tables. */ | |
1469 | ||
1470 | static struct type * | |
fba45db2 | 1471 | error_type (char **pp, struct objfile *objfile) |
c906108c | 1472 | { |
3e43a32a MS |
1473 | complaint (&symfile_complaints, |
1474 | _("couldn't parse type; debugger out of date?")); | |
c906108c SS |
1475 | while (1) |
1476 | { | |
1477 | /* Skip to end of symbol. */ | |
1478 | while (**pp != '\0') | |
1479 | { | |
1480 | (*pp)++; | |
1481 | } | |
1482 | ||
1483 | /* Check for and handle cretinous dbx symbol name continuation! */ | |
1484 | if ((*pp)[-1] == '\\' || (*pp)[-1] == '?') | |
1485 | { | |
1486 | *pp = next_symbol_text (objfile); | |
1487 | } | |
1488 | else | |
1489 | { | |
1490 | break; | |
1491 | } | |
1492 | } | |
46bf5051 | 1493 | return objfile_type (objfile)->builtin_error; |
c906108c | 1494 | } |
c906108c | 1495 | \f |
c5aa993b | 1496 | |
c906108c SS |
1497 | /* Read type information or a type definition; return the type. Even |
1498 | though this routine accepts either type information or a type | |
1499 | definition, the distinction is relevant--some parts of stabsread.c | |
1500 | assume that type information starts with a digit, '-', or '(' in | |
1501 | deciding whether to call read_type. */ | |
1502 | ||
a7a48797 | 1503 | static struct type * |
aa1ee363 | 1504 | read_type (char **pp, struct objfile *objfile) |
c906108c | 1505 | { |
52f0bd74 | 1506 | struct type *type = 0; |
c906108c SS |
1507 | struct type *type1; |
1508 | int typenums[2]; | |
1509 | char type_descriptor; | |
1510 | ||
1511 | /* Size in bits of type if specified by a type attribute, or -1 if | |
1512 | there is no size attribute. */ | |
1513 | int type_size = -1; | |
1514 | ||
c378eb4e | 1515 | /* Used to distinguish string and bitstring from char-array and set. */ |
c906108c SS |
1516 | int is_string = 0; |
1517 | ||
c378eb4e | 1518 | /* Used to distinguish vector from array. */ |
e2cd42dd MS |
1519 | int is_vector = 0; |
1520 | ||
c906108c SS |
1521 | /* Read type number if present. The type number may be omitted. |
1522 | for instance in a two-dimensional array declared with type | |
1523 | "ar1;1;10;ar1;1;10;4". */ | |
1524 | if ((**pp >= '0' && **pp <= '9') | |
1525 | || **pp == '(' | |
1526 | || **pp == '-') | |
1527 | { | |
1528 | if (read_type_number (pp, typenums) != 0) | |
1529 | return error_type (pp, objfile); | |
c5aa993b | 1530 | |
c906108c | 1531 | if (**pp != '=') |
8cfe231d JB |
1532 | { |
1533 | /* Type is not being defined here. Either it already | |
1534 | exists, or this is a forward reference to it. | |
1535 | dbx_alloc_type handles both cases. */ | |
1536 | type = dbx_alloc_type (typenums, objfile); | |
1537 | ||
1538 | /* If this is a forward reference, arrange to complain if it | |
1539 | doesn't get patched up by the time we're done | |
1540 | reading. */ | |
1541 | if (TYPE_CODE (type) == TYPE_CODE_UNDEF) | |
bf362611 | 1542 | add_undefined_type (type, typenums); |
8cfe231d JB |
1543 | |
1544 | return type; | |
1545 | } | |
c906108c SS |
1546 | |
1547 | /* Type is being defined here. */ | |
1548 | /* Skip the '='. | |
c5aa993b JM |
1549 | Also skip the type descriptor - we get it below with (*pp)[-1]. */ |
1550 | (*pp) += 2; | |
c906108c SS |
1551 | } |
1552 | else | |
1553 | { | |
1554 | /* 'typenums=' not present, type is anonymous. Read and return | |
c5aa993b | 1555 | the definition, but don't put it in the type vector. */ |
c906108c SS |
1556 | typenums[0] = typenums[1] = -1; |
1557 | (*pp)++; | |
1558 | } | |
1559 | ||
c5aa993b | 1560 | again: |
c906108c SS |
1561 | type_descriptor = (*pp)[-1]; |
1562 | switch (type_descriptor) | |
1563 | { | |
1564 | case 'x': | |
1565 | { | |
1566 | enum type_code code; | |
1567 | ||
1568 | /* Used to index through file_symbols. */ | |
1569 | struct pending *ppt; | |
1570 | int i; | |
c5aa993b | 1571 | |
c906108c SS |
1572 | /* Name including "struct", etc. */ |
1573 | char *type_name; | |
c5aa993b | 1574 | |
c906108c SS |
1575 | { |
1576 | char *from, *to, *p, *q1, *q2; | |
c5aa993b | 1577 | |
c906108c SS |
1578 | /* Set the type code according to the following letter. */ |
1579 | switch ((*pp)[0]) | |
1580 | { | |
1581 | case 's': | |
1582 | code = TYPE_CODE_STRUCT; | |
1583 | break; | |
1584 | case 'u': | |
1585 | code = TYPE_CODE_UNION; | |
1586 | break; | |
1587 | case 'e': | |
1588 | code = TYPE_CODE_ENUM; | |
1589 | break; | |
1590 | default: | |
1591 | { | |
1592 | /* Complain and keep going, so compilers can invent new | |
1593 | cross-reference types. */ | |
23136709 | 1594 | complaint (&symfile_complaints, |
3e43a32a MS |
1595 | _("Unrecognized cross-reference type `%c'"), |
1596 | (*pp)[0]); | |
c906108c SS |
1597 | code = TYPE_CODE_STRUCT; |
1598 | break; | |
1599 | } | |
1600 | } | |
c5aa993b | 1601 | |
c906108c SS |
1602 | q1 = strchr (*pp, '<'); |
1603 | p = strchr (*pp, ':'); | |
1604 | if (p == NULL) | |
1605 | return error_type (pp, objfile); | |
1606 | if (q1 && p > q1 && p[1] == ':') | |
1607 | { | |
1608 | int nesting_level = 0; | |
433759f7 | 1609 | |
c906108c SS |
1610 | for (q2 = q1; *q2; q2++) |
1611 | { | |
1612 | if (*q2 == '<') | |
1613 | nesting_level++; | |
1614 | else if (*q2 == '>') | |
1615 | nesting_level--; | |
1616 | else if (*q2 == ':' && nesting_level == 0) | |
1617 | break; | |
1618 | } | |
1619 | p = q2; | |
1620 | if (*p != ':') | |
1621 | return error_type (pp, objfile); | |
1622 | } | |
71c25dea TT |
1623 | type_name = NULL; |
1624 | if (current_subfile->language == language_cplus) | |
1625 | { | |
1626 | char *new_name, *name = alloca (p - *pp + 1); | |
433759f7 | 1627 | |
71c25dea TT |
1628 | memcpy (name, *pp, p - *pp); |
1629 | name[p - *pp] = '\0'; | |
1630 | new_name = cp_canonicalize_string (name); | |
1631 | if (new_name != NULL) | |
1632 | { | |
10f0c4bb TT |
1633 | type_name = obstack_copy0 (&objfile->objfile_obstack, |
1634 | new_name, strlen (new_name)); | |
71c25dea TT |
1635 | xfree (new_name); |
1636 | } | |
1637 | } | |
1638 | if (type_name == NULL) | |
1639 | { | |
3e43a32a MS |
1640 | to = type_name = (char *) |
1641 | obstack_alloc (&objfile->objfile_obstack, p - *pp + 1); | |
71c25dea TT |
1642 | |
1643 | /* Copy the name. */ | |
1644 | from = *pp + 1; | |
1645 | while (from < p) | |
1646 | *to++ = *from++; | |
1647 | *to = '\0'; | |
1648 | } | |
c5aa993b | 1649 | |
c906108c SS |
1650 | /* Set the pointer ahead of the name which we just read, and |
1651 | the colon. */ | |
71c25dea | 1652 | *pp = p + 1; |
c906108c SS |
1653 | } |
1654 | ||
149d821b JB |
1655 | /* If this type has already been declared, then reuse the same |
1656 | type, rather than allocating a new one. This saves some | |
1657 | memory. */ | |
c906108c SS |
1658 | |
1659 | for (ppt = file_symbols; ppt; ppt = ppt->next) | |
1660 | for (i = 0; i < ppt->nsyms; i++) | |
1661 | { | |
1662 | struct symbol *sym = ppt->symbol[i]; | |
1663 | ||
1664 | if (SYMBOL_CLASS (sym) == LOC_TYPEDEF | |
176620f1 | 1665 | && SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN |
c906108c | 1666 | && (TYPE_CODE (SYMBOL_TYPE (sym)) == code) |
3567439c | 1667 | && strcmp (SYMBOL_LINKAGE_NAME (sym), type_name) == 0) |
c906108c | 1668 | { |
b99607ea | 1669 | obstack_free (&objfile->objfile_obstack, type_name); |
c906108c | 1670 | type = SYMBOL_TYPE (sym); |
149d821b | 1671 | if (typenums[0] != -1) |
46bf5051 | 1672 | *dbx_lookup_type (typenums, objfile) = type; |
c906108c SS |
1673 | return type; |
1674 | } | |
1675 | } | |
1676 | ||
1677 | /* Didn't find the type to which this refers, so we must | |
1678 | be dealing with a forward reference. Allocate a type | |
1679 | structure for it, and keep track of it so we can | |
1680 | fill in the rest of the fields when we get the full | |
1681 | type. */ | |
1682 | type = dbx_alloc_type (typenums, objfile); | |
1683 | TYPE_CODE (type) = code; | |
1684 | TYPE_TAG_NAME (type) = type_name; | |
c5aa993b | 1685 | INIT_CPLUS_SPECIFIC (type); |
876cecd0 | 1686 | TYPE_STUB (type) = 1; |
c906108c | 1687 | |
bf362611 | 1688 | add_undefined_type (type, typenums); |
c906108c SS |
1689 | return type; |
1690 | } | |
1691 | ||
c5aa993b | 1692 | case '-': /* RS/6000 built-in type */ |
c906108c SS |
1693 | case '0': |
1694 | case '1': | |
1695 | case '2': | |
1696 | case '3': | |
1697 | case '4': | |
1698 | case '5': | |
1699 | case '6': | |
1700 | case '7': | |
1701 | case '8': | |
1702 | case '9': | |
1703 | case '(': | |
1704 | (*pp)--; | |
1705 | ||
1706 | /* We deal with something like t(1,2)=(3,4)=... which | |
c378eb4e | 1707 | the Lucid compiler and recent gcc versions (post 2.7.3) use. */ |
c906108c SS |
1708 | |
1709 | /* Allocate and enter the typedef type first. | |
c378eb4e | 1710 | This handles recursive types. */ |
c906108c SS |
1711 | type = dbx_alloc_type (typenums, objfile); |
1712 | TYPE_CODE (type) = TYPE_CODE_TYPEDEF; | |
c5aa993b JM |
1713 | { |
1714 | struct type *xtype = read_type (pp, objfile); | |
433759f7 | 1715 | |
c906108c SS |
1716 | if (type == xtype) |
1717 | { | |
1718 | /* It's being defined as itself. That means it is "void". */ | |
1719 | TYPE_CODE (type) = TYPE_CODE_VOID; | |
1720 | TYPE_LENGTH (type) = 1; | |
1721 | } | |
1722 | else if (type_size >= 0 || is_string) | |
1723 | { | |
dd6bda65 DJ |
1724 | /* This is the absolute wrong way to construct types. Every |
1725 | other debug format has found a way around this problem and | |
1726 | the related problems with unnecessarily stubbed types; | |
1727 | someone motivated should attempt to clean up the issue | |
1728 | here as well. Once a type pointed to has been created it | |
13a393b0 JB |
1729 | should not be modified. |
1730 | ||
1731 | Well, it's not *absolutely* wrong. Constructing recursive | |
1732 | types (trees, linked lists) necessarily entails modifying | |
1733 | types after creating them. Constructing any loop structure | |
1734 | entails side effects. The Dwarf 2 reader does handle this | |
1735 | more gracefully (it never constructs more than once | |
1736 | instance of a type object, so it doesn't have to copy type | |
1737 | objects wholesale), but it still mutates type objects after | |
1738 | other folks have references to them. | |
1739 | ||
1740 | Keep in mind that this circularity/mutation issue shows up | |
1741 | at the source language level, too: C's "incomplete types", | |
1742 | for example. So the proper cleanup, I think, would be to | |
1743 | limit GDB's type smashing to match exactly those required | |
1744 | by the source language. So GDB could have a | |
1745 | "complete_this_type" function, but never create unnecessary | |
1746 | copies of a type otherwise. */ | |
dd6bda65 | 1747 | replace_type (type, xtype); |
c906108c SS |
1748 | TYPE_NAME (type) = NULL; |
1749 | TYPE_TAG_NAME (type) = NULL; | |
1750 | } | |
1751 | else | |
1752 | { | |
876cecd0 | 1753 | TYPE_TARGET_STUB (type) = 1; |
c906108c SS |
1754 | TYPE_TARGET_TYPE (type) = xtype; |
1755 | } | |
1756 | } | |
1757 | break; | |
1758 | ||
c5aa993b JM |
1759 | /* In the following types, we must be sure to overwrite any existing |
1760 | type that the typenums refer to, rather than allocating a new one | |
1761 | and making the typenums point to the new one. This is because there | |
1762 | may already be pointers to the existing type (if it had been | |
1763 | forward-referenced), and we must change it to a pointer, function, | |
1764 | reference, or whatever, *in-place*. */ | |
c906108c | 1765 | |
e2cd42dd | 1766 | case '*': /* Pointer to another type */ |
c906108c | 1767 | type1 = read_type (pp, objfile); |
46bf5051 | 1768 | type = make_pointer_type (type1, dbx_lookup_type (typenums, objfile)); |
c906108c SS |
1769 | break; |
1770 | ||
c5aa993b | 1771 | case '&': /* Reference to another type */ |
c906108c | 1772 | type1 = read_type (pp, objfile); |
46bf5051 | 1773 | type = make_reference_type (type1, dbx_lookup_type (typenums, objfile)); |
c906108c SS |
1774 | break; |
1775 | ||
c5aa993b | 1776 | case 'f': /* Function returning another type */ |
c906108c | 1777 | type1 = read_type (pp, objfile); |
0c8b41f1 | 1778 | type = make_function_type (type1, dbx_lookup_type (typenums, objfile)); |
c906108c SS |
1779 | break; |
1780 | ||
da966255 JB |
1781 | case 'g': /* Prototyped function. (Sun) */ |
1782 | { | |
1783 | /* Unresolved questions: | |
1784 | ||
1785 | - According to Sun's ``STABS Interface Manual'', for 'f' | |
1786 | and 'F' symbol descriptors, a `0' in the argument type list | |
1787 | indicates a varargs function. But it doesn't say how 'g' | |
1788 | type descriptors represent that info. Someone with access | |
1789 | to Sun's toolchain should try it out. | |
1790 | ||
1791 | - According to the comment in define_symbol (search for | |
1792 | `process_prototype_types:'), Sun emits integer arguments as | |
1793 | types which ref themselves --- like `void' types. Do we | |
1794 | have to deal with that here, too? Again, someone with | |
1795 | access to Sun's toolchain should try it out and let us | |
1796 | know. */ | |
1797 | ||
1798 | const char *type_start = (*pp) - 1; | |
1799 | struct type *return_type = read_type (pp, objfile); | |
1800 | struct type *func_type | |
46bf5051 | 1801 | = make_function_type (return_type, |
0c8b41f1 | 1802 | dbx_lookup_type (typenums, objfile)); |
da966255 JB |
1803 | struct type_list { |
1804 | struct type *type; | |
1805 | struct type_list *next; | |
1806 | } *arg_types = 0; | |
1807 | int num_args = 0; | |
1808 | ||
1809 | while (**pp && **pp != '#') | |
1810 | { | |
1811 | struct type *arg_type = read_type (pp, objfile); | |
fe978cb0 PA |
1812 | struct type_list *newobj = alloca (sizeof (*newobj)); |
1813 | newobj->type = arg_type; | |
1814 | newobj->next = arg_types; | |
1815 | arg_types = newobj; | |
da966255 JB |
1816 | num_args++; |
1817 | } | |
1818 | if (**pp == '#') | |
1819 | ++*pp; | |
1820 | else | |
1821 | { | |
23136709 | 1822 | complaint (&symfile_complaints, |
3e43a32a MS |
1823 | _("Prototyped function type didn't " |
1824 | "end arguments with `#':\n%s"), | |
23136709 | 1825 | type_start); |
da966255 JB |
1826 | } |
1827 | ||
1828 | /* If there is just one argument whose type is `void', then | |
1829 | that's just an empty argument list. */ | |
1830 | if (arg_types | |
1831 | && ! arg_types->next | |
1832 | && TYPE_CODE (arg_types->type) == TYPE_CODE_VOID) | |
1833 | num_args = 0; | |
1834 | ||
1835 | TYPE_FIELDS (func_type) | |
1836 | = (struct field *) TYPE_ALLOC (func_type, | |
1837 | num_args * sizeof (struct field)); | |
1838 | memset (TYPE_FIELDS (func_type), 0, num_args * sizeof (struct field)); | |
1839 | { | |
1840 | int i; | |
1841 | struct type_list *t; | |
1842 | ||
1843 | /* We stuck each argument type onto the front of the list | |
1844 | when we read it, so the list is reversed. Build the | |
1845 | fields array right-to-left. */ | |
1846 | for (t = arg_types, i = num_args - 1; t; t = t->next, i--) | |
1847 | TYPE_FIELD_TYPE (func_type, i) = t->type; | |
1848 | } | |
1849 | TYPE_NFIELDS (func_type) = num_args; | |
876cecd0 | 1850 | TYPE_PROTOTYPED (func_type) = 1; |
da966255 JB |
1851 | |
1852 | type = func_type; | |
1853 | break; | |
1854 | } | |
1855 | ||
c5aa993b | 1856 | case 'k': /* Const qualifier on some type (Sun) */ |
c906108c | 1857 | type = read_type (pp, objfile); |
d7242108 | 1858 | type = make_cv_type (1, TYPE_VOLATILE (type), type, |
46bf5051 | 1859 | dbx_lookup_type (typenums, objfile)); |
c906108c SS |
1860 | break; |
1861 | ||
c5aa993b | 1862 | case 'B': /* Volatile qual on some type (Sun) */ |
c906108c | 1863 | type = read_type (pp, objfile); |
d7242108 | 1864 | type = make_cv_type (TYPE_CONST (type), 1, type, |
46bf5051 | 1865 | dbx_lookup_type (typenums, objfile)); |
c906108c SS |
1866 | break; |
1867 | ||
1868 | case '@': | |
c5aa993b JM |
1869 | if (isdigit (**pp) || **pp == '(' || **pp == '-') |
1870 | { /* Member (class & variable) type */ | |
c906108c SS |
1871 | /* FIXME -- we should be doing smash_to_XXX types here. */ |
1872 | ||
1873 | struct type *domain = read_type (pp, objfile); | |
1874 | struct type *memtype; | |
1875 | ||
1876 | if (**pp != ',') | |
1877 | /* Invalid member type data format. */ | |
1878 | return error_type (pp, objfile); | |
1879 | ++*pp; | |
1880 | ||
1881 | memtype = read_type (pp, objfile); | |
1882 | type = dbx_alloc_type (typenums, objfile); | |
0d5de010 | 1883 | smash_to_memberptr_type (type, domain, memtype); |
c906108c | 1884 | } |
c5aa993b JM |
1885 | else |
1886 | /* type attribute */ | |
c906108c SS |
1887 | { |
1888 | char *attr = *pp; | |
433759f7 | 1889 | |
c906108c SS |
1890 | /* Skip to the semicolon. */ |
1891 | while (**pp != ';' && **pp != '\0') | |
1892 | ++(*pp); | |
1893 | if (**pp == '\0') | |
1894 | return error_type (pp, objfile); | |
1895 | else | |
c5aa993b | 1896 | ++ * pp; /* Skip the semicolon. */ |
c906108c SS |
1897 | |
1898 | switch (*attr) | |
1899 | { | |
e2cd42dd | 1900 | case 's': /* Size attribute */ |
c906108c SS |
1901 | type_size = atoi (attr + 1); |
1902 | if (type_size <= 0) | |
1903 | type_size = -1; | |
1904 | break; | |
1905 | ||
e2cd42dd | 1906 | case 'S': /* String attribute */ |
c378eb4e | 1907 | /* FIXME: check to see if following type is array? */ |
c906108c SS |
1908 | is_string = 1; |
1909 | break; | |
1910 | ||
e2cd42dd | 1911 | case 'V': /* Vector attribute */ |
c378eb4e | 1912 | /* FIXME: check to see if following type is array? */ |
e2cd42dd MS |
1913 | is_vector = 1; |
1914 | break; | |
1915 | ||
c906108c SS |
1916 | default: |
1917 | /* Ignore unrecognized type attributes, so future compilers | |
c5aa993b | 1918 | can invent new ones. */ |
c906108c SS |
1919 | break; |
1920 | } | |
1921 | ++*pp; | |
1922 | goto again; | |
1923 | } | |
1924 | break; | |
1925 | ||
c5aa993b | 1926 | case '#': /* Method (class & fn) type */ |
c906108c SS |
1927 | if ((*pp)[0] == '#') |
1928 | { | |
1929 | /* We'll get the parameter types from the name. */ | |
1930 | struct type *return_type; | |
1931 | ||
1932 | (*pp)++; | |
1933 | return_type = read_type (pp, objfile); | |
1934 | if (*(*pp)++ != ';') | |
23136709 | 1935 | complaint (&symfile_complaints, |
3e43a32a MS |
1936 | _("invalid (minimal) member type " |
1937 | "data format at symtab pos %d."), | |
23136709 | 1938 | symnum); |
c906108c SS |
1939 | type = allocate_stub_method (return_type); |
1940 | if (typenums[0] != -1) | |
46bf5051 | 1941 | *dbx_lookup_type (typenums, objfile) = type; |
c906108c SS |
1942 | } |
1943 | else | |
1944 | { | |
1945 | struct type *domain = read_type (pp, objfile); | |
1946 | struct type *return_type; | |
ad2f7632 DJ |
1947 | struct field *args; |
1948 | int nargs, varargs; | |
c906108c SS |
1949 | |
1950 | if (**pp != ',') | |
1951 | /* Invalid member type data format. */ | |
1952 | return error_type (pp, objfile); | |
1953 | else | |
1954 | ++(*pp); | |
1955 | ||
1956 | return_type = read_type (pp, objfile); | |
ad2f7632 | 1957 | args = read_args (pp, ';', objfile, &nargs, &varargs); |
0a029df5 DJ |
1958 | if (args == NULL) |
1959 | return error_type (pp, objfile); | |
c906108c | 1960 | type = dbx_alloc_type (typenums, objfile); |
ad2f7632 DJ |
1961 | smash_to_method_type (type, domain, return_type, args, |
1962 | nargs, varargs); | |
c906108c SS |
1963 | } |
1964 | break; | |
1965 | ||
c5aa993b | 1966 | case 'r': /* Range type */ |
94e10a22 | 1967 | type = read_range_type (pp, typenums, type_size, objfile); |
c906108c | 1968 | if (typenums[0] != -1) |
46bf5051 | 1969 | *dbx_lookup_type (typenums, objfile) = type; |
c906108c SS |
1970 | break; |
1971 | ||
1972 | case 'b': | |
c906108c SS |
1973 | { |
1974 | /* Sun ACC builtin int type */ | |
1975 | type = read_sun_builtin_type (pp, typenums, objfile); | |
1976 | if (typenums[0] != -1) | |
46bf5051 | 1977 | *dbx_lookup_type (typenums, objfile) = type; |
c906108c SS |
1978 | } |
1979 | break; | |
1980 | ||
c5aa993b | 1981 | case 'R': /* Sun ACC builtin float type */ |
c906108c SS |
1982 | type = read_sun_floating_type (pp, typenums, objfile); |
1983 | if (typenums[0] != -1) | |
46bf5051 | 1984 | *dbx_lookup_type (typenums, objfile) = type; |
c906108c | 1985 | break; |
c5aa993b JM |
1986 | |
1987 | case 'e': /* Enumeration type */ | |
c906108c SS |
1988 | type = dbx_alloc_type (typenums, objfile); |
1989 | type = read_enum_type (pp, type, objfile); | |
1990 | if (typenums[0] != -1) | |
46bf5051 | 1991 | *dbx_lookup_type (typenums, objfile) = type; |
c906108c SS |
1992 | break; |
1993 | ||
c5aa993b JM |
1994 | case 's': /* Struct type */ |
1995 | case 'u': /* Union type */ | |
2ae1c2d2 JB |
1996 | { |
1997 | enum type_code type_code = TYPE_CODE_UNDEF; | |
1998 | type = dbx_alloc_type (typenums, objfile); | |
1999 | switch (type_descriptor) | |
2000 | { | |
2001 | case 's': | |
2002 | type_code = TYPE_CODE_STRUCT; | |
2003 | break; | |
2004 | case 'u': | |
2005 | type_code = TYPE_CODE_UNION; | |
2006 | break; | |
2007 | } | |
2008 | type = read_struct_type (pp, type, type_code, objfile); | |
2009 | break; | |
2010 | } | |
c906108c | 2011 | |
c5aa993b | 2012 | case 'a': /* Array type */ |
c906108c SS |
2013 | if (**pp != 'r') |
2014 | return error_type (pp, objfile); | |
2015 | ++*pp; | |
c5aa993b | 2016 | |
c906108c SS |
2017 | type = dbx_alloc_type (typenums, objfile); |
2018 | type = read_array_type (pp, type, objfile); | |
2019 | if (is_string) | |
2020 | TYPE_CODE (type) = TYPE_CODE_STRING; | |
e2cd42dd | 2021 | if (is_vector) |
ea37ba09 | 2022 | make_vector_type (type); |
c906108c SS |
2023 | break; |
2024 | ||
6b1755ce | 2025 | case 'S': /* Set type */ |
c906108c | 2026 | type1 = read_type (pp, objfile); |
c5aa993b | 2027 | type = create_set_type ((struct type *) NULL, type1); |
c906108c | 2028 | if (typenums[0] != -1) |
46bf5051 | 2029 | *dbx_lookup_type (typenums, objfile) = type; |
c906108c SS |
2030 | break; |
2031 | ||
2032 | default: | |
c378eb4e MS |
2033 | --*pp; /* Go back to the symbol in error. */ |
2034 | /* Particularly important if it was \0! */ | |
c906108c SS |
2035 | return error_type (pp, objfile); |
2036 | } | |
2037 | ||
2038 | if (type == 0) | |
2039 | { | |
8a3fe4f8 | 2040 | warning (_("GDB internal error, type is NULL in stabsread.c.")); |
c906108c SS |
2041 | return error_type (pp, objfile); |
2042 | } | |
2043 | ||
2044 | /* Size specified in a type attribute overrides any other size. */ | |
2045 | if (type_size != -1) | |
2046 | TYPE_LENGTH (type) = (type_size + TARGET_CHAR_BIT - 1) / TARGET_CHAR_BIT; | |
2047 | ||
2048 | return type; | |
2049 | } | |
2050 | \f | |
2051 | /* RS/6000 xlc/dbx combination uses a set of builtin types, starting from -1. | |
c378eb4e | 2052 | Return the proper type node for a given builtin type number. */ |
c906108c | 2053 | |
46bf5051 UW |
2054 | static const struct objfile_data *rs6000_builtin_type_data; |
2055 | ||
c906108c | 2056 | static struct type * |
46bf5051 | 2057 | rs6000_builtin_type (int typenum, struct objfile *objfile) |
c906108c | 2058 | { |
3e43a32a MS |
2059 | struct type **negative_types = objfile_data (objfile, |
2060 | rs6000_builtin_type_data); | |
46bf5051 | 2061 | |
c906108c SS |
2062 | /* We recognize types numbered from -NUMBER_RECOGNIZED to -1. */ |
2063 | #define NUMBER_RECOGNIZED 34 | |
c906108c SS |
2064 | struct type *rettype = NULL; |
2065 | ||
2066 | if (typenum >= 0 || typenum < -NUMBER_RECOGNIZED) | |
2067 | { | |
e2e0b3e5 | 2068 | complaint (&symfile_complaints, _("Unknown builtin type %d"), typenum); |
46bf5051 | 2069 | return objfile_type (objfile)->builtin_error; |
c906108c | 2070 | } |
46bf5051 UW |
2071 | |
2072 | if (!negative_types) | |
2073 | { | |
2074 | /* This includes an empty slot for type number -0. */ | |
2075 | negative_types = OBSTACK_CALLOC (&objfile->objfile_obstack, | |
2076 | NUMBER_RECOGNIZED + 1, struct type *); | |
2077 | set_objfile_data (objfile, rs6000_builtin_type_data, negative_types); | |
2078 | } | |
2079 | ||
c906108c SS |
2080 | if (negative_types[-typenum] != NULL) |
2081 | return negative_types[-typenum]; | |
2082 | ||
2083 | #if TARGET_CHAR_BIT != 8 | |
c5aa993b | 2084 | #error This code wrong for TARGET_CHAR_BIT not 8 |
c906108c SS |
2085 | /* These definitions all assume that TARGET_CHAR_BIT is 8. I think |
2086 | that if that ever becomes not true, the correct fix will be to | |
2087 | make the size in the struct type to be in bits, not in units of | |
2088 | TARGET_CHAR_BIT. */ | |
2089 | #endif | |
2090 | ||
2091 | switch (-typenum) | |
2092 | { | |
2093 | case 1: | |
2094 | /* The size of this and all the other types are fixed, defined | |
c5aa993b JM |
2095 | by the debugging format. If there is a type called "int" which |
2096 | is other than 32 bits, then it should use a new negative type | |
2097 | number (or avoid negative type numbers for that case). | |
2098 | See stabs.texinfo. */ | |
46bf5051 | 2099 | rettype = init_type (TYPE_CODE_INT, 4, 0, "int", objfile); |
c906108c SS |
2100 | break; |
2101 | case 2: | |
46bf5051 | 2102 | rettype = init_type (TYPE_CODE_INT, 1, 0, "char", objfile); |
c906108c SS |
2103 | break; |
2104 | case 3: | |
46bf5051 | 2105 | rettype = init_type (TYPE_CODE_INT, 2, 0, "short", objfile); |
c906108c SS |
2106 | break; |
2107 | case 4: | |
46bf5051 | 2108 | rettype = init_type (TYPE_CODE_INT, 4, 0, "long", objfile); |
c906108c SS |
2109 | break; |
2110 | case 5: | |
2111 | rettype = init_type (TYPE_CODE_INT, 1, TYPE_FLAG_UNSIGNED, | |
46bf5051 | 2112 | "unsigned char", objfile); |
c906108c SS |
2113 | break; |
2114 | case 6: | |
46bf5051 | 2115 | rettype = init_type (TYPE_CODE_INT, 1, 0, "signed char", objfile); |
c906108c SS |
2116 | break; |
2117 | case 7: | |
2118 | rettype = init_type (TYPE_CODE_INT, 2, TYPE_FLAG_UNSIGNED, | |
46bf5051 | 2119 | "unsigned short", objfile); |
c906108c SS |
2120 | break; |
2121 | case 8: | |
2122 | rettype = init_type (TYPE_CODE_INT, 4, TYPE_FLAG_UNSIGNED, | |
46bf5051 | 2123 | "unsigned int", objfile); |
c906108c SS |
2124 | break; |
2125 | case 9: | |
2126 | rettype = init_type (TYPE_CODE_INT, 4, TYPE_FLAG_UNSIGNED, | |
46bf5051 | 2127 | "unsigned", objfile); |
89acf84d | 2128 | break; |
c906108c SS |
2129 | case 10: |
2130 | rettype = init_type (TYPE_CODE_INT, 4, TYPE_FLAG_UNSIGNED, | |
46bf5051 | 2131 | "unsigned long", objfile); |
c906108c SS |
2132 | break; |
2133 | case 11: | |
46bf5051 | 2134 | rettype = init_type (TYPE_CODE_VOID, 1, 0, "void", objfile); |
c906108c SS |
2135 | break; |
2136 | case 12: | |
2137 | /* IEEE single precision (32 bit). */ | |
46bf5051 | 2138 | rettype = init_type (TYPE_CODE_FLT, 4, 0, "float", objfile); |
c906108c SS |
2139 | break; |
2140 | case 13: | |
2141 | /* IEEE double precision (64 bit). */ | |
46bf5051 | 2142 | rettype = init_type (TYPE_CODE_FLT, 8, 0, "double", objfile); |
c906108c SS |
2143 | break; |
2144 | case 14: | |
2145 | /* This is an IEEE double on the RS/6000, and different machines with | |
c5aa993b JM |
2146 | different sizes for "long double" should use different negative |
2147 | type numbers. See stabs.texinfo. */ | |
46bf5051 | 2148 | rettype = init_type (TYPE_CODE_FLT, 8, 0, "long double", objfile); |
c906108c SS |
2149 | break; |
2150 | case 15: | |
46bf5051 | 2151 | rettype = init_type (TYPE_CODE_INT, 4, 0, "integer", objfile); |
c906108c SS |
2152 | break; |
2153 | case 16: | |
2154 | rettype = init_type (TYPE_CODE_BOOL, 4, TYPE_FLAG_UNSIGNED, | |
46bf5051 | 2155 | "boolean", objfile); |
c906108c SS |
2156 | break; |
2157 | case 17: | |
46bf5051 | 2158 | rettype = init_type (TYPE_CODE_FLT, 4, 0, "short real", objfile); |
c906108c SS |
2159 | break; |
2160 | case 18: | |
46bf5051 | 2161 | rettype = init_type (TYPE_CODE_FLT, 8, 0, "real", objfile); |
c906108c SS |
2162 | break; |
2163 | case 19: | |
46bf5051 | 2164 | rettype = init_type (TYPE_CODE_ERROR, 0, 0, "stringptr", objfile); |
c906108c SS |
2165 | break; |
2166 | case 20: | |
2167 | rettype = init_type (TYPE_CODE_CHAR, 1, TYPE_FLAG_UNSIGNED, | |
46bf5051 | 2168 | "character", objfile); |
c906108c SS |
2169 | break; |
2170 | case 21: | |
2171 | rettype = init_type (TYPE_CODE_BOOL, 1, TYPE_FLAG_UNSIGNED, | |
46bf5051 | 2172 | "logical*1", objfile); |
c906108c SS |
2173 | break; |
2174 | case 22: | |
2175 | rettype = init_type (TYPE_CODE_BOOL, 2, TYPE_FLAG_UNSIGNED, | |
46bf5051 | 2176 | "logical*2", objfile); |
c906108c SS |
2177 | break; |
2178 | case 23: | |
2179 | rettype = init_type (TYPE_CODE_BOOL, 4, TYPE_FLAG_UNSIGNED, | |
46bf5051 | 2180 | "logical*4", objfile); |
c906108c SS |
2181 | break; |
2182 | case 24: | |
2183 | rettype = init_type (TYPE_CODE_BOOL, 4, TYPE_FLAG_UNSIGNED, | |
46bf5051 | 2184 | "logical", objfile); |
c906108c SS |
2185 | break; |
2186 | case 25: | |
2187 | /* Complex type consisting of two IEEE single precision values. */ | |
46bf5051 | 2188 | rettype = init_type (TYPE_CODE_COMPLEX, 8, 0, "complex", objfile); |
f65ca430 | 2189 | TYPE_TARGET_TYPE (rettype) = init_type (TYPE_CODE_FLT, 4, 0, "float", |
46bf5051 | 2190 | objfile); |
c906108c SS |
2191 | break; |
2192 | case 26: | |
2193 | /* Complex type consisting of two IEEE double precision values. */ | |
2194 | rettype = init_type (TYPE_CODE_COMPLEX, 16, 0, "double complex", NULL); | |
f65ca430 | 2195 | TYPE_TARGET_TYPE (rettype) = init_type (TYPE_CODE_FLT, 8, 0, "double", |
46bf5051 | 2196 | objfile); |
c906108c SS |
2197 | break; |
2198 | case 27: | |
46bf5051 | 2199 | rettype = init_type (TYPE_CODE_INT, 1, 0, "integer*1", objfile); |
c906108c SS |
2200 | break; |
2201 | case 28: | |
46bf5051 | 2202 | rettype = init_type (TYPE_CODE_INT, 2, 0, "integer*2", objfile); |
c906108c SS |
2203 | break; |
2204 | case 29: | |
46bf5051 | 2205 | rettype = init_type (TYPE_CODE_INT, 4, 0, "integer*4", objfile); |
c906108c SS |
2206 | break; |
2207 | case 30: | |
46bf5051 | 2208 | rettype = init_type (TYPE_CODE_CHAR, 2, 0, "wchar", objfile); |
c906108c SS |
2209 | break; |
2210 | case 31: | |
46bf5051 | 2211 | rettype = init_type (TYPE_CODE_INT, 8, 0, "long long", objfile); |
c906108c SS |
2212 | break; |
2213 | case 32: | |
2214 | rettype = init_type (TYPE_CODE_INT, 8, TYPE_FLAG_UNSIGNED, | |
46bf5051 | 2215 | "unsigned long long", objfile); |
c906108c SS |
2216 | break; |
2217 | case 33: | |
2218 | rettype = init_type (TYPE_CODE_INT, 8, TYPE_FLAG_UNSIGNED, | |
46bf5051 | 2219 | "logical*8", objfile); |
c906108c SS |
2220 | break; |
2221 | case 34: | |
46bf5051 | 2222 | rettype = init_type (TYPE_CODE_INT, 8, 0, "integer*8", objfile); |
c906108c SS |
2223 | break; |
2224 | } | |
2225 | negative_types[-typenum] = rettype; | |
2226 | return rettype; | |
2227 | } | |
2228 | \f | |
2229 | /* This page contains subroutines of read_type. */ | |
2230 | ||
0d5cff50 DE |
2231 | /* Wrapper around method_name_from_physname to flag a complaint |
2232 | if there is an error. */ | |
de17c821 | 2233 | |
0d5cff50 DE |
2234 | static char * |
2235 | stabs_method_name_from_physname (const char *physname) | |
de17c821 DJ |
2236 | { |
2237 | char *method_name; | |
2238 | ||
2239 | method_name = method_name_from_physname (physname); | |
2240 | ||
2241 | if (method_name == NULL) | |
c263362b DJ |
2242 | { |
2243 | complaint (&symfile_complaints, | |
e2e0b3e5 | 2244 | _("Method has bad physname %s\n"), physname); |
0d5cff50 | 2245 | return NULL; |
c263362b | 2246 | } |
de17c821 | 2247 | |
0d5cff50 | 2248 | return method_name; |
de17c821 DJ |
2249 | } |
2250 | ||
c906108c SS |
2251 | /* Read member function stabs info for C++ classes. The form of each member |
2252 | function data is: | |
2253 | ||
c5aa993b | 2254 | NAME :: TYPENUM[=type definition] ARGS : PHYSNAME ; |
c906108c SS |
2255 | |
2256 | An example with two member functions is: | |
2257 | ||
c5aa993b | 2258 | afunc1::20=##15;:i;2A.;afunc2::20:i;2A.; |
c906108c SS |
2259 | |
2260 | For the case of overloaded operators, the format is op$::*.funcs, where | |
2261 | $ is the CPLUS_MARKER (usually '$'), `*' holds the place for an operator | |
2262 | name (such as `+=') and `.' marks the end of the operator name. | |
2263 | ||
2264 | Returns 1 for success, 0 for failure. */ | |
2265 | ||
2266 | static int | |
fba45db2 KB |
2267 | read_member_functions (struct field_info *fip, char **pp, struct type *type, |
2268 | struct objfile *objfile) | |
c906108c SS |
2269 | { |
2270 | int nfn_fields = 0; | |
2271 | int length = 0; | |
c906108c SS |
2272 | int i; |
2273 | struct next_fnfield | |
2274 | { | |
2275 | struct next_fnfield *next; | |
2276 | struct fn_field fn_field; | |
c5aa993b JM |
2277 | } |
2278 | *sublist; | |
c906108c SS |
2279 | struct type *look_ahead_type; |
2280 | struct next_fnfieldlist *new_fnlist; | |
2281 | struct next_fnfield *new_sublist; | |
2282 | char *main_fn_name; | |
52f0bd74 | 2283 | char *p; |
c5aa993b | 2284 | |
c906108c | 2285 | /* Process each list until we find something that is not a member function |
c378eb4e | 2286 | or find the end of the functions. */ |
c906108c SS |
2287 | |
2288 | while (**pp != ';') | |
2289 | { | |
2290 | /* We should be positioned at the start of the function name. | |
c5aa993b | 2291 | Scan forward to find the first ':' and if it is not the |
c378eb4e | 2292 | first of a "::" delimiter, then this is not a member function. */ |
c906108c SS |
2293 | p = *pp; |
2294 | while (*p != ':') | |
2295 | { | |
2296 | p++; | |
2297 | } | |
2298 | if (p[1] != ':') | |
2299 | { | |
2300 | break; | |
2301 | } | |
2302 | ||
2303 | sublist = NULL; | |
2304 | look_ahead_type = NULL; | |
2305 | length = 0; | |
c5aa993b | 2306 | |
c906108c SS |
2307 | new_fnlist = (struct next_fnfieldlist *) |
2308 | xmalloc (sizeof (struct next_fnfieldlist)); | |
b8c9b27d | 2309 | make_cleanup (xfree, new_fnlist); |
c906108c | 2310 | memset (new_fnlist, 0, sizeof (struct next_fnfieldlist)); |
c5aa993b | 2311 | |
c906108c SS |
2312 | if ((*pp)[0] == 'o' && (*pp)[1] == 'p' && is_cplus_marker ((*pp)[2])) |
2313 | { | |
2314 | /* This is a completely wierd case. In order to stuff in the | |
2315 | names that might contain colons (the usual name delimiter), | |
2316 | Mike Tiemann defined a different name format which is | |
2317 | signalled if the identifier is "op$". In that case, the | |
2318 | format is "op$::XXXX." where XXXX is the name. This is | |
2319 | used for names like "+" or "=". YUUUUUUUK! FIXME! */ | |
2320 | /* This lets the user type "break operator+". | |
2321 | We could just put in "+" as the name, but that wouldn't | |
2322 | work for "*". */ | |
8343f86c | 2323 | static char opname[32] = "op$"; |
c906108c | 2324 | char *o = opname + 3; |
c5aa993b | 2325 | |
c906108c SS |
2326 | /* Skip past '::'. */ |
2327 | *pp = p + 2; | |
2328 | ||
2329 | STABS_CONTINUE (pp, objfile); | |
2330 | p = *pp; | |
2331 | while (*p != '.') | |
2332 | { | |
2333 | *o++ = *p++; | |
2334 | } | |
2335 | main_fn_name = savestring (opname, o - opname); | |
2336 | /* Skip past '.' */ | |
2337 | *pp = p + 1; | |
2338 | } | |
2339 | else | |
2340 | { | |
2341 | main_fn_name = savestring (*pp, p - *pp); | |
2342 | /* Skip past '::'. */ | |
2343 | *pp = p + 2; | |
2344 | } | |
c5aa993b JM |
2345 | new_fnlist->fn_fieldlist.name = main_fn_name; |
2346 | ||
c906108c SS |
2347 | do |
2348 | { | |
2349 | new_sublist = | |
2350 | (struct next_fnfield *) xmalloc (sizeof (struct next_fnfield)); | |
b8c9b27d | 2351 | make_cleanup (xfree, new_sublist); |
c906108c | 2352 | memset (new_sublist, 0, sizeof (struct next_fnfield)); |
c5aa993b | 2353 | |
c906108c SS |
2354 | /* Check for and handle cretinous dbx symbol name continuation! */ |
2355 | if (look_ahead_type == NULL) | |
2356 | { | |
c378eb4e | 2357 | /* Normal case. */ |
c906108c | 2358 | STABS_CONTINUE (pp, objfile); |
c5aa993b JM |
2359 | |
2360 | new_sublist->fn_field.type = read_type (pp, objfile); | |
c906108c SS |
2361 | if (**pp != ':') |
2362 | { | |
2363 | /* Invalid symtab info for member function. */ | |
2364 | return 0; | |
2365 | } | |
2366 | } | |
2367 | else | |
2368 | { | |
2369 | /* g++ version 1 kludge */ | |
c5aa993b | 2370 | new_sublist->fn_field.type = look_ahead_type; |
c906108c SS |
2371 | look_ahead_type = NULL; |
2372 | } | |
c5aa993b | 2373 | |
c906108c SS |
2374 | (*pp)++; |
2375 | p = *pp; | |
2376 | while (*p != ';') | |
2377 | { | |
2378 | p++; | |
2379 | } | |
c5aa993b | 2380 | |
09e2d7c7 DE |
2381 | /* These are methods, not functions. */ |
2382 | if (TYPE_CODE (new_sublist->fn_field.type) == TYPE_CODE_FUNC) | |
2383 | TYPE_CODE (new_sublist->fn_field.type) = TYPE_CODE_METHOD; | |
2384 | else | |
2385 | gdb_assert (TYPE_CODE (new_sublist->fn_field.type) | |
2386 | == TYPE_CODE_METHOD); | |
c906108c | 2387 | |
09e2d7c7 | 2388 | /* If this is just a stub, then we don't have the real name here. */ |
74a9bb82 | 2389 | if (TYPE_STUB (new_sublist->fn_field.type)) |
c906108c | 2390 | { |
4bfb94b8 | 2391 | if (!TYPE_SELF_TYPE (new_sublist->fn_field.type)) |
09e2d7c7 | 2392 | set_type_self_type (new_sublist->fn_field.type, type); |
c5aa993b | 2393 | new_sublist->fn_field.is_stub = 1; |
c906108c | 2394 | } |
09e2d7c7 | 2395 | |
c5aa993b | 2396 | new_sublist->fn_field.physname = savestring (*pp, p - *pp); |
c906108c | 2397 | *pp = p + 1; |
c5aa993b | 2398 | |
c906108c SS |
2399 | /* Set this member function's visibility fields. */ |
2400 | switch (*(*pp)++) | |
2401 | { | |
c5aa993b JM |
2402 | case VISIBILITY_PRIVATE: |
2403 | new_sublist->fn_field.is_private = 1; | |
2404 | break; | |
2405 | case VISIBILITY_PROTECTED: | |
2406 | new_sublist->fn_field.is_protected = 1; | |
2407 | break; | |
c906108c | 2408 | } |
c5aa993b | 2409 | |
c906108c SS |
2410 | STABS_CONTINUE (pp, objfile); |
2411 | switch (**pp) | |
2412 | { | |
c378eb4e | 2413 | case 'A': /* Normal functions. */ |
c5aa993b JM |
2414 | new_sublist->fn_field.is_const = 0; |
2415 | new_sublist->fn_field.is_volatile = 0; | |
2416 | (*pp)++; | |
2417 | break; | |
c378eb4e | 2418 | case 'B': /* `const' member functions. */ |
c5aa993b JM |
2419 | new_sublist->fn_field.is_const = 1; |
2420 | new_sublist->fn_field.is_volatile = 0; | |
2421 | (*pp)++; | |
2422 | break; | |
c378eb4e | 2423 | case 'C': /* `volatile' member function. */ |
c5aa993b JM |
2424 | new_sublist->fn_field.is_const = 0; |
2425 | new_sublist->fn_field.is_volatile = 1; | |
2426 | (*pp)++; | |
2427 | break; | |
c378eb4e | 2428 | case 'D': /* `const volatile' member function. */ |
c5aa993b JM |
2429 | new_sublist->fn_field.is_const = 1; |
2430 | new_sublist->fn_field.is_volatile = 1; | |
2431 | (*pp)++; | |
2432 | break; | |
3e43a32a | 2433 | case '*': /* File compiled with g++ version 1 -- |
c378eb4e | 2434 | no info. */ |
c5aa993b JM |
2435 | case '?': |
2436 | case '.': | |
2437 | break; | |
2438 | default: | |
23136709 | 2439 | complaint (&symfile_complaints, |
3e43a32a MS |
2440 | _("const/volatile indicator missing, got '%c'"), |
2441 | **pp); | |
c5aa993b | 2442 | break; |
c906108c | 2443 | } |
c5aa993b | 2444 | |
c906108c SS |
2445 | switch (*(*pp)++) |
2446 | { | |
c5aa993b | 2447 | case '*': |
c906108c SS |
2448 | { |
2449 | int nbits; | |
c5aa993b | 2450 | /* virtual member function, followed by index. |
c906108c SS |
2451 | The sign bit is set to distinguish pointers-to-methods |
2452 | from virtual function indicies. Since the array is | |
2453 | in words, the quantity must be shifted left by 1 | |
2454 | on 16 bit machine, and by 2 on 32 bit machine, forcing | |
2455 | the sign bit out, and usable as a valid index into | |
2456 | the array. Remove the sign bit here. */ | |
c5aa993b | 2457 | new_sublist->fn_field.voffset = |
94e10a22 | 2458 | (0x7fffffff & read_huge_number (pp, ';', &nbits, 0)) + 2; |
c906108c SS |
2459 | if (nbits != 0) |
2460 | return 0; | |
c5aa993b | 2461 | |
c906108c SS |
2462 | STABS_CONTINUE (pp, objfile); |
2463 | if (**pp == ';' || **pp == '\0') | |
2464 | { | |
2465 | /* Must be g++ version 1. */ | |
c5aa993b | 2466 | new_sublist->fn_field.fcontext = 0; |
c906108c SS |
2467 | } |
2468 | else | |
2469 | { | |
2470 | /* Figure out from whence this virtual function came. | |
2471 | It may belong to virtual function table of | |
2472 | one of its baseclasses. */ | |
2473 | look_ahead_type = read_type (pp, objfile); | |
2474 | if (**pp == ':') | |
2475 | { | |
c378eb4e | 2476 | /* g++ version 1 overloaded methods. */ |
c906108c SS |
2477 | } |
2478 | else | |
2479 | { | |
c5aa993b | 2480 | new_sublist->fn_field.fcontext = look_ahead_type; |
c906108c SS |
2481 | if (**pp != ';') |
2482 | { | |
2483 | return 0; | |
2484 | } | |
2485 | else | |
2486 | { | |
2487 | ++*pp; | |
2488 | } | |
2489 | look_ahead_type = NULL; | |
2490 | } | |
2491 | } | |
2492 | break; | |
2493 | } | |
c5aa993b JM |
2494 | case '?': |
2495 | /* static member function. */ | |
4ea09c10 PS |
2496 | { |
2497 | int slen = strlen (main_fn_name); | |
2498 | ||
2499 | new_sublist->fn_field.voffset = VOFFSET_STATIC; | |
2500 | ||
2501 | /* For static member functions, we can't tell if they | |
2502 | are stubbed, as they are put out as functions, and not as | |
2503 | methods. | |
2504 | GCC v2 emits the fully mangled name if | |
2505 | dbxout.c:flag_minimal_debug is not set, so we have to | |
2506 | detect a fully mangled physname here and set is_stub | |
2507 | accordingly. Fully mangled physnames in v2 start with | |
2508 | the member function name, followed by two underscores. | |
2509 | GCC v3 currently always emits stubbed member functions, | |
2510 | but with fully mangled physnames, which start with _Z. */ | |
2511 | if (!(strncmp (new_sublist->fn_field.physname, | |
2512 | main_fn_name, slen) == 0 | |
2513 | && new_sublist->fn_field.physname[slen] == '_' | |
2514 | && new_sublist->fn_field.physname[slen + 1] == '_')) | |
2515 | { | |
2516 | new_sublist->fn_field.is_stub = 1; | |
2517 | } | |
2518 | break; | |
2519 | } | |
c5aa993b JM |
2520 | |
2521 | default: | |
2522 | /* error */ | |
23136709 | 2523 | complaint (&symfile_complaints, |
3e43a32a MS |
2524 | _("member function type missing, got '%c'"), |
2525 | (*pp)[-1]); | |
c5aa993b JM |
2526 | /* Fall through into normal member function. */ |
2527 | ||
2528 | case '.': | |
2529 | /* normal member function. */ | |
2530 | new_sublist->fn_field.voffset = 0; | |
2531 | new_sublist->fn_field.fcontext = 0; | |
2532 | break; | |
c906108c | 2533 | } |
c5aa993b JM |
2534 | |
2535 | new_sublist->next = sublist; | |
c906108c SS |
2536 | sublist = new_sublist; |
2537 | length++; | |
2538 | STABS_CONTINUE (pp, objfile); | |
2539 | } | |
2540 | while (**pp != ';' && **pp != '\0'); | |
c5aa993b | 2541 | |
c906108c | 2542 | (*pp)++; |
0c867556 | 2543 | STABS_CONTINUE (pp, objfile); |
c5aa993b | 2544 | |
0c867556 PS |
2545 | /* Skip GCC 3.X member functions which are duplicates of the callable |
2546 | constructor/destructor. */ | |
6cbbcdfe KS |
2547 | if (strcmp_iw (main_fn_name, "__base_ctor ") == 0 |
2548 | || strcmp_iw (main_fn_name, "__base_dtor ") == 0 | |
0c867556 | 2549 | || strcmp (main_fn_name, "__deleting_dtor") == 0) |
c906108c | 2550 | { |
0c867556 | 2551 | xfree (main_fn_name); |
c906108c | 2552 | } |
0c867556 PS |
2553 | else |
2554 | { | |
de17c821 DJ |
2555 | int has_stub = 0; |
2556 | int has_destructor = 0, has_other = 0; | |
2557 | int is_v3 = 0; | |
2558 | struct next_fnfield *tmp_sublist; | |
2559 | ||
2560 | /* Various versions of GCC emit various mostly-useless | |
2561 | strings in the name field for special member functions. | |
2562 | ||
2563 | For stub methods, we need to defer correcting the name | |
2564 | until we are ready to unstub the method, because the current | |
2565 | name string is used by gdb_mangle_name. The only stub methods | |
2566 | of concern here are GNU v2 operators; other methods have their | |
2567 | names correct (see caveat below). | |
2568 | ||
2569 | For non-stub methods, in GNU v3, we have a complete physname. | |
2570 | Therefore we can safely correct the name now. This primarily | |
2571 | affects constructors and destructors, whose name will be | |
2572 | __comp_ctor or __comp_dtor instead of Foo or ~Foo. Cast | |
2573 | operators will also have incorrect names; for instance, | |
2574 | "operator int" will be named "operator i" (i.e. the type is | |
2575 | mangled). | |
2576 | ||
2577 | For non-stub methods in GNU v2, we have no easy way to | |
2578 | know if we have a complete physname or not. For most | |
2579 | methods the result depends on the platform (if CPLUS_MARKER | |
2580 | can be `$' or `.', it will use minimal debug information, or | |
2581 | otherwise the full physname will be included). | |
2582 | ||
2583 | Rather than dealing with this, we take a different approach. | |
2584 | For v3 mangled names, we can use the full physname; for v2, | |
2585 | we use cplus_demangle_opname (which is actually v2 specific), | |
2586 | because the only interesting names are all operators - once again | |
2587 | barring the caveat below. Skip this process if any method in the | |
2588 | group is a stub, to prevent our fouling up the workings of | |
2589 | gdb_mangle_name. | |
2590 | ||
2591 | The caveat: GCC 2.95.x (and earlier?) put constructors and | |
2592 | destructors in the same method group. We need to split this | |
2593 | into two groups, because they should have different names. | |
2594 | So for each method group we check whether it contains both | |
2595 | routines whose physname appears to be a destructor (the physnames | |
2596 | for and destructors are always provided, due to quirks in v2 | |
2597 | mangling) and routines whose physname does not appear to be a | |
2598 | destructor. If so then we break up the list into two halves. | |
2599 | Even if the constructors and destructors aren't in the same group | |
2600 | the destructor will still lack the leading tilde, so that also | |
2601 | needs to be fixed. | |
2602 | ||
2603 | So, to summarize what we expect and handle here: | |
2604 | ||
2605 | Given Given Real Real Action | |
2606 | method name physname physname method name | |
2607 | ||
2608 | __opi [none] __opi__3Foo operator int opname | |
3e43a32a MS |
2609 | [now or later] |
2610 | Foo _._3Foo _._3Foo ~Foo separate and | |
de17c821 DJ |
2611 | rename |
2612 | operator i _ZN3FoocviEv _ZN3FoocviEv operator int demangle | |
2613 | __comp_ctor _ZN3FooC1ERKS_ _ZN3FooC1ERKS_ Foo demangle | |
2614 | */ | |
2615 | ||
2616 | tmp_sublist = sublist; | |
2617 | while (tmp_sublist != NULL) | |
2618 | { | |
2619 | if (tmp_sublist->fn_field.is_stub) | |
2620 | has_stub = 1; | |
2621 | if (tmp_sublist->fn_field.physname[0] == '_' | |
2622 | && tmp_sublist->fn_field.physname[1] == 'Z') | |
2623 | is_v3 = 1; | |
2624 | ||
2625 | if (is_destructor_name (tmp_sublist->fn_field.physname)) | |
2626 | has_destructor++; | |
2627 | else | |
2628 | has_other++; | |
2629 | ||
2630 | tmp_sublist = tmp_sublist->next; | |
2631 | } | |
2632 | ||
2633 | if (has_destructor && has_other) | |
2634 | { | |
2635 | struct next_fnfieldlist *destr_fnlist; | |
2636 | struct next_fnfield *last_sublist; | |
2637 | ||
2638 | /* Create a new fn_fieldlist for the destructors. */ | |
2639 | ||
2640 | destr_fnlist = (struct next_fnfieldlist *) | |
2641 | xmalloc (sizeof (struct next_fnfieldlist)); | |
2642 | make_cleanup (xfree, destr_fnlist); | |
2643 | memset (destr_fnlist, 0, sizeof (struct next_fnfieldlist)); | |
2644 | destr_fnlist->fn_fieldlist.name | |
48cb83fd JK |
2645 | = obconcat (&objfile->objfile_obstack, "~", |
2646 | new_fnlist->fn_fieldlist.name, (char *) NULL); | |
de17c821 DJ |
2647 | |
2648 | destr_fnlist->fn_fieldlist.fn_fields = (struct fn_field *) | |
b99607ea | 2649 | obstack_alloc (&objfile->objfile_obstack, |
de17c821 DJ |
2650 | sizeof (struct fn_field) * has_destructor); |
2651 | memset (destr_fnlist->fn_fieldlist.fn_fields, 0, | |
2652 | sizeof (struct fn_field) * has_destructor); | |
2653 | tmp_sublist = sublist; | |
2654 | last_sublist = NULL; | |
2655 | i = 0; | |
2656 | while (tmp_sublist != NULL) | |
2657 | { | |
2658 | if (!is_destructor_name (tmp_sublist->fn_field.physname)) | |
2659 | { | |
2660 | tmp_sublist = tmp_sublist->next; | |
2661 | continue; | |
2662 | } | |
2663 | ||
2664 | destr_fnlist->fn_fieldlist.fn_fields[i++] | |
2665 | = tmp_sublist->fn_field; | |
2666 | if (last_sublist) | |
2667 | last_sublist->next = tmp_sublist->next; | |
2668 | else | |
2669 | sublist = tmp_sublist->next; | |
2670 | last_sublist = tmp_sublist; | |
2671 | tmp_sublist = tmp_sublist->next; | |
2672 | } | |
2673 | ||
2674 | destr_fnlist->fn_fieldlist.length = has_destructor; | |
2675 | destr_fnlist->next = fip->fnlist; | |
2676 | fip->fnlist = destr_fnlist; | |
2677 | nfn_fields++; | |
de17c821 DJ |
2678 | length -= has_destructor; |
2679 | } | |
2680 | else if (is_v3) | |
2681 | { | |
2682 | /* v3 mangling prevents the use of abbreviated physnames, | |
2683 | so we can do this here. There are stubbed methods in v3 | |
2684 | only: | |
2685 | - in -gstabs instead of -gstabs+ | |
2686 | - or for static methods, which are output as a function type | |
2687 | instead of a method type. */ | |
0d5cff50 DE |
2688 | char *new_method_name = |
2689 | stabs_method_name_from_physname (sublist->fn_field.physname); | |
de17c821 | 2690 | |
0d5cff50 DE |
2691 | if (new_method_name != NULL |
2692 | && strcmp (new_method_name, | |
2693 | new_fnlist->fn_fieldlist.name) != 0) | |
2694 | { | |
2695 | new_fnlist->fn_fieldlist.name = new_method_name; | |
2696 | xfree (main_fn_name); | |
2697 | } | |
2698 | else | |
2699 | xfree (new_method_name); | |
de17c821 DJ |
2700 | } |
2701 | else if (has_destructor && new_fnlist->fn_fieldlist.name[0] != '~') | |
2702 | { | |
1754f103 | 2703 | new_fnlist->fn_fieldlist.name = |
0d5cff50 DE |
2704 | obconcat (&objfile->objfile_obstack, |
2705 | "~", main_fn_name, (char *)NULL); | |
de17c821 DJ |
2706 | xfree (main_fn_name); |
2707 | } | |
2708 | else if (!has_stub) | |
2709 | { | |
2710 | char dem_opname[256]; | |
2711 | int ret; | |
433759f7 | 2712 | |
de17c821 DJ |
2713 | ret = cplus_demangle_opname (new_fnlist->fn_fieldlist.name, |
2714 | dem_opname, DMGL_ANSI); | |
2715 | if (!ret) | |
2716 | ret = cplus_demangle_opname (new_fnlist->fn_fieldlist.name, | |
2717 | dem_opname, 0); | |
2718 | if (ret) | |
2719 | new_fnlist->fn_fieldlist.name | |
10f0c4bb TT |
2720 | = obstack_copy0 (&objfile->objfile_obstack, |
2721 | dem_opname, strlen (dem_opname)); | |
0d5cff50 | 2722 | xfree (main_fn_name); |
de17c821 DJ |
2723 | } |
2724 | ||
0c867556 | 2725 | new_fnlist->fn_fieldlist.fn_fields = (struct fn_field *) |
b99607ea | 2726 | obstack_alloc (&objfile->objfile_obstack, |
0c867556 PS |
2727 | sizeof (struct fn_field) * length); |
2728 | memset (new_fnlist->fn_fieldlist.fn_fields, 0, | |
2729 | sizeof (struct fn_field) * length); | |
2730 | for (i = length; (i--, sublist); sublist = sublist->next) | |
2731 | { | |
2732 | new_fnlist->fn_fieldlist.fn_fields[i] = sublist->fn_field; | |
2733 | } | |
c5aa993b | 2734 | |
0c867556 PS |
2735 | new_fnlist->fn_fieldlist.length = length; |
2736 | new_fnlist->next = fip->fnlist; | |
2737 | fip->fnlist = new_fnlist; | |
2738 | nfn_fields++; | |
0c867556 | 2739 | } |
c906108c SS |
2740 | } |
2741 | ||
2742 | if (nfn_fields) | |
2743 | { | |
2744 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
2745 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
2746 | TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * nfn_fields); | |
2747 | memset (TYPE_FN_FIELDLISTS (type), 0, | |
2748 | sizeof (struct fn_fieldlist) * nfn_fields); | |
2749 | TYPE_NFN_FIELDS (type) = nfn_fields; | |
c906108c SS |
2750 | } |
2751 | ||
2752 | return 1; | |
2753 | } | |
2754 | ||
2755 | /* Special GNU C++ name. | |
2756 | ||
2757 | Returns 1 for success, 0 for failure. "failure" means that we can't | |
2758 | keep parsing and it's time for error_type(). */ | |
2759 | ||
2760 | static int | |
fba45db2 KB |
2761 | read_cpp_abbrev (struct field_info *fip, char **pp, struct type *type, |
2762 | struct objfile *objfile) | |
c906108c | 2763 | { |
52f0bd74 | 2764 | char *p; |
0d5cff50 | 2765 | const char *name; |
c906108c SS |
2766 | char cpp_abbrev; |
2767 | struct type *context; | |
2768 | ||
2769 | p = *pp; | |
2770 | if (*++p == 'v') | |
2771 | { | |
2772 | name = NULL; | |
2773 | cpp_abbrev = *++p; | |
2774 | ||
2775 | *pp = p + 1; | |
2776 | ||
2777 | /* At this point, *pp points to something like "22:23=*22...", | |
c5aa993b JM |
2778 | where the type number before the ':' is the "context" and |
2779 | everything after is a regular type definition. Lookup the | |
c378eb4e | 2780 | type, find it's name, and construct the field name. */ |
c906108c SS |
2781 | |
2782 | context = read_type (pp, objfile); | |
2783 | ||
2784 | switch (cpp_abbrev) | |
2785 | { | |
c5aa993b | 2786 | case 'f': /* $vf -- a virtual function table pointer */ |
c2bd2ed9 JB |
2787 | name = type_name_no_tag (context); |
2788 | if (name == NULL) | |
433759f7 MS |
2789 | { |
2790 | name = ""; | |
2791 | } | |
48cb83fd JK |
2792 | fip->list->field.name = obconcat (&objfile->objfile_obstack, |
2793 | vptr_name, name, (char *) NULL); | |
c5aa993b | 2794 | break; |
c906108c | 2795 | |
c5aa993b JM |
2796 | case 'b': /* $vb -- a virtual bsomethingorother */ |
2797 | name = type_name_no_tag (context); | |
2798 | if (name == NULL) | |
2799 | { | |
23136709 | 2800 | complaint (&symfile_complaints, |
3e43a32a MS |
2801 | _("C++ abbreviated type name " |
2802 | "unknown at symtab pos %d"), | |
23136709 | 2803 | symnum); |
c5aa993b JM |
2804 | name = "FOO"; |
2805 | } | |
48cb83fd JK |
2806 | fip->list->field.name = obconcat (&objfile->objfile_obstack, vb_name, |
2807 | name, (char *) NULL); | |
c5aa993b | 2808 | break; |
c906108c | 2809 | |
c5aa993b | 2810 | default: |
23136709 | 2811 | invalid_cpp_abbrev_complaint (*pp); |
48cb83fd JK |
2812 | fip->list->field.name = obconcat (&objfile->objfile_obstack, |
2813 | "INVALID_CPLUSPLUS_ABBREV", | |
2814 | (char *) NULL); | |
c5aa993b | 2815 | break; |
c906108c SS |
2816 | } |
2817 | ||
2818 | /* At this point, *pp points to the ':'. Skip it and read the | |
c378eb4e | 2819 | field type. */ |
c906108c SS |
2820 | |
2821 | p = ++(*pp); | |
2822 | if (p[-1] != ':') | |
2823 | { | |
23136709 | 2824 | invalid_cpp_abbrev_complaint (*pp); |
c906108c SS |
2825 | return 0; |
2826 | } | |
2827 | fip->list->field.type = read_type (pp, objfile); | |
2828 | if (**pp == ',') | |
c5aa993b | 2829 | (*pp)++; /* Skip the comma. */ |
c906108c SS |
2830 | else |
2831 | return 0; | |
2832 | ||
2833 | { | |
2834 | int nbits; | |
433759f7 | 2835 | |
f41f5e61 PA |
2836 | SET_FIELD_BITPOS (fip->list->field, |
2837 | read_huge_number (pp, ';', &nbits, 0)); | |
c906108c SS |
2838 | if (nbits != 0) |
2839 | return 0; | |
2840 | } | |
2841 | /* This field is unpacked. */ | |
2842 | FIELD_BITSIZE (fip->list->field) = 0; | |
2843 | fip->list->visibility = VISIBILITY_PRIVATE; | |
2844 | } | |
2845 | else | |
2846 | { | |
23136709 | 2847 | invalid_cpp_abbrev_complaint (*pp); |
c906108c | 2848 | /* We have no idea what syntax an unrecognized abbrev would have, so |
c5aa993b JM |
2849 | better return 0. If we returned 1, we would need to at least advance |
2850 | *pp to avoid an infinite loop. */ | |
c906108c SS |
2851 | return 0; |
2852 | } | |
2853 | return 1; | |
2854 | } | |
2855 | ||
2856 | static void | |
fba45db2 KB |
2857 | read_one_struct_field (struct field_info *fip, char **pp, char *p, |
2858 | struct type *type, struct objfile *objfile) | |
c906108c | 2859 | { |
5e2b427d UW |
2860 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
2861 | ||
41989fcd | 2862 | fip->list->field.name = |
10f0c4bb | 2863 | obstack_copy0 (&objfile->objfile_obstack, *pp, p - *pp); |
c906108c SS |
2864 | *pp = p + 1; |
2865 | ||
c378eb4e | 2866 | /* This means we have a visibility for a field coming. */ |
c906108c SS |
2867 | if (**pp == '/') |
2868 | { | |
2869 | (*pp)++; | |
c5aa993b | 2870 | fip->list->visibility = *(*pp)++; |
c906108c SS |
2871 | } |
2872 | else | |
2873 | { | |
2874 | /* normal dbx-style format, no explicit visibility */ | |
c5aa993b | 2875 | fip->list->visibility = VISIBILITY_PUBLIC; |
c906108c SS |
2876 | } |
2877 | ||
c5aa993b | 2878 | fip->list->field.type = read_type (pp, objfile); |
c906108c SS |
2879 | if (**pp == ':') |
2880 | { | |
2881 | p = ++(*pp); | |
2882 | #if 0 | |
c378eb4e | 2883 | /* Possible future hook for nested types. */ |
c906108c SS |
2884 | if (**pp == '!') |
2885 | { | |
c5aa993b | 2886 | fip->list->field.bitpos = (long) -2; /* nested type */ |
c906108c SS |
2887 | p = ++(*pp); |
2888 | } | |
c5aa993b JM |
2889 | else |
2890 | ...; | |
c906108c | 2891 | #endif |
c5aa993b | 2892 | while (*p != ';') |
c906108c SS |
2893 | { |
2894 | p++; | |
2895 | } | |
2896 | /* Static class member. */ | |
2897 | SET_FIELD_PHYSNAME (fip->list->field, savestring (*pp, p - *pp)); | |
2898 | *pp = p + 1; | |
2899 | return; | |
2900 | } | |
2901 | else if (**pp != ',') | |
2902 | { | |
2903 | /* Bad structure-type format. */ | |
23136709 | 2904 | stabs_general_complaint ("bad structure-type format"); |
c906108c SS |
2905 | return; |
2906 | } | |
2907 | ||
2908 | (*pp)++; /* Skip the comma. */ | |
2909 | ||
2910 | { | |
2911 | int nbits; | |
433759f7 | 2912 | |
f41f5e61 PA |
2913 | SET_FIELD_BITPOS (fip->list->field, |
2914 | read_huge_number (pp, ',', &nbits, 0)); | |
c906108c SS |
2915 | if (nbits != 0) |
2916 | { | |
23136709 | 2917 | stabs_general_complaint ("bad structure-type format"); |
c906108c SS |
2918 | return; |
2919 | } | |
94e10a22 | 2920 | FIELD_BITSIZE (fip->list->field) = read_huge_number (pp, ';', &nbits, 0); |
c906108c SS |
2921 | if (nbits != 0) |
2922 | { | |
23136709 | 2923 | stabs_general_complaint ("bad structure-type format"); |
c906108c SS |
2924 | return; |
2925 | } | |
2926 | } | |
2927 | ||
2928 | if (FIELD_BITPOS (fip->list->field) == 0 | |
2929 | && FIELD_BITSIZE (fip->list->field) == 0) | |
2930 | { | |
2931 | /* This can happen in two cases: (1) at least for gcc 2.4.5 or so, | |
c5aa993b JM |
2932 | it is a field which has been optimized out. The correct stab for |
2933 | this case is to use VISIBILITY_IGNORE, but that is a recent | |
2934 | invention. (2) It is a 0-size array. For example | |
e2e0b3e5 | 2935 | union { int num; char str[0]; } foo. Printing _("<no value>" for |
c5aa993b JM |
2936 | str in "p foo" is OK, since foo.str (and thus foo.str[3]) |
2937 | will continue to work, and a 0-size array as a whole doesn't | |
2938 | have any contents to print. | |
2939 | ||
2940 | I suspect this probably could also happen with gcc -gstabs (not | |
2941 | -gstabs+) for static fields, and perhaps other C++ extensions. | |
2942 | Hopefully few people use -gstabs with gdb, since it is intended | |
2943 | for dbx compatibility. */ | |
c906108c SS |
2944 | |
2945 | /* Ignore this field. */ | |
c5aa993b | 2946 | fip->list->visibility = VISIBILITY_IGNORE; |
c906108c SS |
2947 | } |
2948 | else | |
2949 | { | |
2950 | /* Detect an unpacked field and mark it as such. | |
c5aa993b JM |
2951 | dbx gives a bit size for all fields. |
2952 | Note that forward refs cannot be packed, | |
2953 | and treat enums as if they had the width of ints. */ | |
c906108c SS |
2954 | |
2955 | struct type *field_type = check_typedef (FIELD_TYPE (fip->list->field)); | |
2956 | ||
2957 | if (TYPE_CODE (field_type) != TYPE_CODE_INT | |
2958 | && TYPE_CODE (field_type) != TYPE_CODE_RANGE | |
2959 | && TYPE_CODE (field_type) != TYPE_CODE_BOOL | |
2960 | && TYPE_CODE (field_type) != TYPE_CODE_ENUM) | |
2961 | { | |
2962 | FIELD_BITSIZE (fip->list->field) = 0; | |
2963 | } | |
c5aa993b | 2964 | if ((FIELD_BITSIZE (fip->list->field) |
c906108c SS |
2965 | == TARGET_CHAR_BIT * TYPE_LENGTH (field_type) |
2966 | || (TYPE_CODE (field_type) == TYPE_CODE_ENUM | |
9a76efb6 | 2967 | && FIELD_BITSIZE (fip->list->field) |
5e2b427d | 2968 | == gdbarch_int_bit (gdbarch)) |
c5aa993b | 2969 | ) |
c906108c SS |
2970 | && |
2971 | FIELD_BITPOS (fip->list->field) % 8 == 0) | |
2972 | { | |
2973 | FIELD_BITSIZE (fip->list->field) = 0; | |
2974 | } | |
2975 | } | |
2976 | } | |
2977 | ||
2978 | ||
2979 | /* Read struct or class data fields. They have the form: | |
2980 | ||
c5aa993b | 2981 | NAME : [VISIBILITY] TYPENUM , BITPOS , BITSIZE ; |
c906108c SS |
2982 | |
2983 | At the end, we see a semicolon instead of a field. | |
2984 | ||
2985 | In C++, this may wind up being NAME:?TYPENUM:PHYSNAME; for | |
2986 | a static field. | |
2987 | ||
2988 | The optional VISIBILITY is one of: | |
2989 | ||
c5aa993b JM |
2990 | '/0' (VISIBILITY_PRIVATE) |
2991 | '/1' (VISIBILITY_PROTECTED) | |
2992 | '/2' (VISIBILITY_PUBLIC) | |
2993 | '/9' (VISIBILITY_IGNORE) | |
c906108c SS |
2994 | |
2995 | or nothing, for C style fields with public visibility. | |
2996 | ||
2997 | Returns 1 for success, 0 for failure. */ | |
2998 | ||
2999 | static int | |
fba45db2 KB |
3000 | read_struct_fields (struct field_info *fip, char **pp, struct type *type, |
3001 | struct objfile *objfile) | |
c906108c | 3002 | { |
52f0bd74 | 3003 | char *p; |
fe978cb0 | 3004 | struct nextfield *newobj; |
c906108c SS |
3005 | |
3006 | /* We better set p right now, in case there are no fields at all... */ | |
3007 | ||
3008 | p = *pp; | |
3009 | ||
3010 | /* Read each data member type until we find the terminating ';' at the end of | |
3011 | the data member list, or break for some other reason such as finding the | |
c378eb4e | 3012 | start of the member function list. */ |
fedbd091 | 3013 | /* Stab string for structure/union does not end with two ';' in |
c378eb4e | 3014 | SUN C compiler 5.3 i.e. F6U2, hence check for end of string. */ |
c906108c | 3015 | |
fedbd091 | 3016 | while (**pp != ';' && **pp != '\0') |
c906108c | 3017 | { |
c906108c SS |
3018 | STABS_CONTINUE (pp, objfile); |
3019 | /* Get space to record the next field's data. */ | |
fe978cb0 PA |
3020 | newobj = (struct nextfield *) xmalloc (sizeof (struct nextfield)); |
3021 | make_cleanup (xfree, newobj); | |
3022 | memset (newobj, 0, sizeof (struct nextfield)); | |
3023 | newobj->next = fip->list; | |
3024 | fip->list = newobj; | |
c906108c SS |
3025 | |
3026 | /* Get the field name. */ | |
3027 | p = *pp; | |
3028 | ||
3029 | /* If is starts with CPLUS_MARKER it is a special abbreviation, | |
c5aa993b JM |
3030 | unless the CPLUS_MARKER is followed by an underscore, in |
3031 | which case it is just the name of an anonymous type, which we | |
3032 | should handle like any other type name. */ | |
c906108c SS |
3033 | |
3034 | if (is_cplus_marker (p[0]) && p[1] != '_') | |
3035 | { | |
3036 | if (!read_cpp_abbrev (fip, pp, type, objfile)) | |
3037 | return 0; | |
3038 | continue; | |
3039 | } | |
3040 | ||
3041 | /* Look for the ':' that separates the field name from the field | |
c5aa993b JM |
3042 | values. Data members are delimited by a single ':', while member |
3043 | functions are delimited by a pair of ':'s. When we hit the member | |
c378eb4e | 3044 | functions (if any), terminate scan loop and return. */ |
c906108c | 3045 | |
c5aa993b | 3046 | while (*p != ':' && *p != '\0') |
c906108c SS |
3047 | { |
3048 | p++; | |
3049 | } | |
3050 | if (*p == '\0') | |
3051 | return 0; | |
3052 | ||
3053 | /* Check to see if we have hit the member functions yet. */ | |
3054 | if (p[1] == ':') | |
3055 | { | |
3056 | break; | |
3057 | } | |
3058 | read_one_struct_field (fip, pp, p, type, objfile); | |
3059 | } | |
3060 | if (p[0] == ':' && p[1] == ':') | |
3061 | { | |
1b831c93 AC |
3062 | /* (the deleted) chill the list of fields: the last entry (at |
3063 | the head) is a partially constructed entry which we now | |
c378eb4e | 3064 | scrub. */ |
c5aa993b | 3065 | fip->list = fip->list->next; |
c906108c SS |
3066 | } |
3067 | return 1; | |
3068 | } | |
9846de1b | 3069 | /* *INDENT-OFF* */ |
c906108c SS |
3070 | /* The stabs for C++ derived classes contain baseclass information which |
3071 | is marked by a '!' character after the total size. This function is | |
3072 | called when we encounter the baseclass marker, and slurps up all the | |
3073 | baseclass information. | |
3074 | ||
3075 | Immediately following the '!' marker is the number of base classes that | |
3076 | the class is derived from, followed by information for each base class. | |
3077 | For each base class, there are two visibility specifiers, a bit offset | |
3078 | to the base class information within the derived class, a reference to | |
3079 | the type for the base class, and a terminating semicolon. | |
3080 | ||
3081 | A typical example, with two base classes, would be "!2,020,19;0264,21;". | |
3082 | ^^ ^ ^ ^ ^ ^ ^ | |
3083 | Baseclass information marker __________________|| | | | | | | | |
3084 | Number of baseclasses __________________________| | | | | | | | |
3085 | Visibility specifiers (2) ________________________| | | | | | | |
3086 | Offset in bits from start of class _________________| | | | | | |
3087 | Type number for base class ___________________________| | | | | |
3088 | Visibility specifiers (2) _______________________________| | | | |
3089 | Offset in bits from start of class ________________________| | | |
3090 | Type number of base class ____________________________________| | |
3091 | ||
3092 | Return 1 for success, 0 for (error-type-inducing) failure. */ | |
9846de1b | 3093 | /* *INDENT-ON* */ |
c906108c | 3094 | |
c5aa993b JM |
3095 | |
3096 | ||
c906108c | 3097 | static int |
fba45db2 KB |
3098 | read_baseclasses (struct field_info *fip, char **pp, struct type *type, |
3099 | struct objfile *objfile) | |
c906108c SS |
3100 | { |
3101 | int i; | |
fe978cb0 | 3102 | struct nextfield *newobj; |
c906108c SS |
3103 | |
3104 | if (**pp != '!') | |
3105 | { | |
3106 | return 1; | |
3107 | } | |
3108 | else | |
3109 | { | |
c378eb4e | 3110 | /* Skip the '!' baseclass information marker. */ |
c906108c SS |
3111 | (*pp)++; |
3112 | } | |
3113 | ||
3114 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
3115 | { | |
3116 | int nbits; | |
433759f7 | 3117 | |
94e10a22 | 3118 | TYPE_N_BASECLASSES (type) = read_huge_number (pp, ',', &nbits, 0); |
c906108c SS |
3119 | if (nbits != 0) |
3120 | return 0; | |
3121 | } | |
3122 | ||
3123 | #if 0 | |
3124 | /* Some stupid compilers have trouble with the following, so break | |
3125 | it up into simpler expressions. */ | |
3126 | TYPE_FIELD_VIRTUAL_BITS (type) = (B_TYPE *) | |
3127 | TYPE_ALLOC (type, B_BYTES (TYPE_N_BASECLASSES (type))); | |
3128 | #else | |
3129 | { | |
3130 | int num_bytes = B_BYTES (TYPE_N_BASECLASSES (type)); | |
3131 | char *pointer; | |
3132 | ||
3133 | pointer = (char *) TYPE_ALLOC (type, num_bytes); | |
3134 | TYPE_FIELD_VIRTUAL_BITS (type) = (B_TYPE *) pointer; | |
3135 | } | |
3136 | #endif /* 0 */ | |
3137 | ||
3138 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), TYPE_N_BASECLASSES (type)); | |
3139 | ||
3140 | for (i = 0; i < TYPE_N_BASECLASSES (type); i++) | |
3141 | { | |
fe978cb0 PA |
3142 | newobj = (struct nextfield *) xmalloc (sizeof (struct nextfield)); |
3143 | make_cleanup (xfree, newobj); | |
3144 | memset (newobj, 0, sizeof (struct nextfield)); | |
3145 | newobj->next = fip->list; | |
3146 | fip->list = newobj; | |
3147 | FIELD_BITSIZE (newobj->field) = 0; /* This should be an unpacked | |
c378eb4e | 3148 | field! */ |
c906108c SS |
3149 | |
3150 | STABS_CONTINUE (pp, objfile); | |
3151 | switch (**pp) | |
3152 | { | |
c5aa993b | 3153 | case '0': |
c378eb4e | 3154 | /* Nothing to do. */ |
c5aa993b JM |
3155 | break; |
3156 | case '1': | |
3157 | SET_TYPE_FIELD_VIRTUAL (type, i); | |
3158 | break; | |
3159 | default: | |
3160 | /* Unknown character. Complain and treat it as non-virtual. */ | |
3161 | { | |
23136709 | 3162 | complaint (&symfile_complaints, |
3e43a32a MS |
3163 | _("Unknown virtual character `%c' for baseclass"), |
3164 | **pp); | |
c5aa993b | 3165 | } |
c906108c SS |
3166 | } |
3167 | ++(*pp); | |
3168 | ||
fe978cb0 PA |
3169 | newobj->visibility = *(*pp)++; |
3170 | switch (newobj->visibility) | |
c906108c | 3171 | { |
c5aa993b JM |
3172 | case VISIBILITY_PRIVATE: |
3173 | case VISIBILITY_PROTECTED: | |
3174 | case VISIBILITY_PUBLIC: | |
3175 | break; | |
3176 | default: | |
3177 | /* Bad visibility format. Complain and treat it as | |
3178 | public. */ | |
3179 | { | |
23136709 | 3180 | complaint (&symfile_complaints, |
e2e0b3e5 | 3181 | _("Unknown visibility `%c' for baseclass"), |
fe978cb0 PA |
3182 | newobj->visibility); |
3183 | newobj->visibility = VISIBILITY_PUBLIC; | |
c5aa993b | 3184 | } |
c906108c SS |
3185 | } |
3186 | ||
3187 | { | |
3188 | int nbits; | |
c5aa993b | 3189 | |
c906108c SS |
3190 | /* The remaining value is the bit offset of the portion of the object |
3191 | corresponding to this baseclass. Always zero in the absence of | |
3192 | multiple inheritance. */ | |
3193 | ||
fe978cb0 | 3194 | SET_FIELD_BITPOS (newobj->field, read_huge_number (pp, ',', &nbits, 0)); |
c906108c SS |
3195 | if (nbits != 0) |
3196 | return 0; | |
3197 | } | |
3198 | ||
3199 | /* The last piece of baseclass information is the type of the | |
c5aa993b | 3200 | base class. Read it, and remember it's type name as this |
c378eb4e | 3201 | field's name. */ |
c906108c | 3202 | |
fe978cb0 PA |
3203 | newobj->field.type = read_type (pp, objfile); |
3204 | newobj->field.name = type_name_no_tag (newobj->field.type); | |
c906108c | 3205 | |
c378eb4e | 3206 | /* Skip trailing ';' and bump count of number of fields seen. */ |
c906108c SS |
3207 | if (**pp == ';') |
3208 | (*pp)++; | |
3209 | else | |
3210 | return 0; | |
3211 | } | |
3212 | return 1; | |
3213 | } | |
3214 | ||
3215 | /* The tail end of stabs for C++ classes that contain a virtual function | |
3216 | pointer contains a tilde, a %, and a type number. | |
3217 | The type number refers to the base class (possibly this class itself) which | |
3218 | contains the vtable pointer for the current class. | |
3219 | ||
3220 | This function is called when we have parsed all the method declarations, | |
3221 | so we can look for the vptr base class info. */ | |
3222 | ||
3223 | static int | |
fba45db2 KB |
3224 | read_tilde_fields (struct field_info *fip, char **pp, struct type *type, |
3225 | struct objfile *objfile) | |
c906108c | 3226 | { |
52f0bd74 | 3227 | char *p; |
c906108c SS |
3228 | |
3229 | STABS_CONTINUE (pp, objfile); | |
3230 | ||
c378eb4e | 3231 | /* If we are positioned at a ';', then skip it. */ |
c906108c SS |
3232 | if (**pp == ';') |
3233 | { | |
3234 | (*pp)++; | |
3235 | } | |
3236 | ||
3237 | if (**pp == '~') | |
3238 | { | |
3239 | (*pp)++; | |
3240 | ||
3241 | if (**pp == '=' || **pp == '+' || **pp == '-') | |
3242 | { | |
3243 | /* Obsolete flags that used to indicate the presence | |
c378eb4e | 3244 | of constructors and/or destructors. */ |
c906108c SS |
3245 | (*pp)++; |
3246 | } | |
3247 | ||
3248 | /* Read either a '%' or the final ';'. */ | |
3249 | if (*(*pp)++ == '%') | |
3250 | { | |
3251 | /* The next number is the type number of the base class | |
3252 | (possibly our own class) which supplies the vtable for | |
3253 | this class. Parse it out, and search that class to find | |
3254 | its vtable pointer, and install those into TYPE_VPTR_BASETYPE | |
3255 | and TYPE_VPTR_FIELDNO. */ | |
3256 | ||
3257 | struct type *t; | |
3258 | int i; | |
3259 | ||
3260 | t = read_type (pp, objfile); | |
3261 | p = (*pp)++; | |
3262 | while (*p != '\0' && *p != ';') | |
3263 | { | |
3264 | p++; | |
3265 | } | |
3266 | if (*p == '\0') | |
3267 | { | |
3268 | /* Premature end of symbol. */ | |
3269 | return 0; | |
3270 | } | |
c5aa993b | 3271 | |
ae6ae975 | 3272 | set_type_vptr_basetype (type, t); |
c378eb4e | 3273 | if (type == t) /* Our own class provides vtbl ptr. */ |
c906108c SS |
3274 | { |
3275 | for (i = TYPE_NFIELDS (t) - 1; | |
3276 | i >= TYPE_N_BASECLASSES (t); | |
3277 | --i) | |
3278 | { | |
0d5cff50 | 3279 | const char *name = TYPE_FIELD_NAME (t, i); |
433759f7 | 3280 | |
8343f86c | 3281 | if (!strncmp (name, vptr_name, sizeof (vptr_name) - 2) |
74451869 | 3282 | && is_cplus_marker (name[sizeof (vptr_name) - 2])) |
c906108c | 3283 | { |
ae6ae975 | 3284 | set_type_vptr_fieldno (type, i); |
c906108c SS |
3285 | goto gotit; |
3286 | } | |
3287 | } | |
3288 | /* Virtual function table field not found. */ | |
23136709 | 3289 | complaint (&symfile_complaints, |
3e43a32a MS |
3290 | _("virtual function table pointer " |
3291 | "not found when defining class `%s'"), | |
23136709 | 3292 | TYPE_NAME (type)); |
c906108c SS |
3293 | return 0; |
3294 | } | |
3295 | else | |
3296 | { | |
ae6ae975 | 3297 | set_type_vptr_fieldno (type, TYPE_VPTR_FIELDNO (t)); |
c906108c SS |
3298 | } |
3299 | ||
c5aa993b | 3300 | gotit: |
c906108c SS |
3301 | *pp = p + 1; |
3302 | } | |
3303 | } | |
3304 | return 1; | |
3305 | } | |
3306 | ||
3307 | static int | |
aa1ee363 | 3308 | attach_fn_fields_to_type (struct field_info *fip, struct type *type) |
c906108c | 3309 | { |
52f0bd74 | 3310 | int n; |
c906108c SS |
3311 | |
3312 | for (n = TYPE_NFN_FIELDS (type); | |
c5aa993b JM |
3313 | fip->fnlist != NULL; |
3314 | fip->fnlist = fip->fnlist->next) | |
c906108c | 3315 | { |
c378eb4e | 3316 | --n; /* Circumvent Sun3 compiler bug. */ |
c5aa993b | 3317 | TYPE_FN_FIELDLISTS (type)[n] = fip->fnlist->fn_fieldlist; |
c906108c SS |
3318 | } |
3319 | return 1; | |
3320 | } | |
3321 | ||
c906108c SS |
3322 | /* Create the vector of fields, and record how big it is. |
3323 | We need this info to record proper virtual function table information | |
3324 | for this class's virtual functions. */ | |
3325 | ||
3326 | static int | |
aa1ee363 | 3327 | attach_fields_to_type (struct field_info *fip, struct type *type, |
fba45db2 | 3328 | struct objfile *objfile) |
c906108c | 3329 | { |
52f0bd74 AC |
3330 | int nfields = 0; |
3331 | int non_public_fields = 0; | |
3332 | struct nextfield *scan; | |
c906108c SS |
3333 | |
3334 | /* Count up the number of fields that we have, as well as taking note of | |
3335 | whether or not there are any non-public fields, which requires us to | |
3336 | allocate and build the private_field_bits and protected_field_bits | |
c378eb4e | 3337 | bitfields. */ |
c906108c | 3338 | |
c5aa993b | 3339 | for (scan = fip->list; scan != NULL; scan = scan->next) |
c906108c SS |
3340 | { |
3341 | nfields++; | |
c5aa993b | 3342 | if (scan->visibility != VISIBILITY_PUBLIC) |
c906108c SS |
3343 | { |
3344 | non_public_fields++; | |
3345 | } | |
3346 | } | |
3347 | ||
3348 | /* Now we know how many fields there are, and whether or not there are any | |
3349 | non-public fields. Record the field count, allocate space for the | |
c378eb4e | 3350 | array of fields, and create blank visibility bitfields if necessary. */ |
c906108c SS |
3351 | |
3352 | TYPE_NFIELDS (type) = nfields; | |
3353 | TYPE_FIELDS (type) = (struct field *) | |
3354 | TYPE_ALLOC (type, sizeof (struct field) * nfields); | |
3355 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields); | |
3356 | ||
3357 | if (non_public_fields) | |
3358 | { | |
3359 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
3360 | ||
3361 | TYPE_FIELD_PRIVATE_BITS (type) = | |
3362 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
3363 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
3364 | ||
3365 | TYPE_FIELD_PROTECTED_BITS (type) = | |
3366 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
3367 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
3368 | ||
3369 | TYPE_FIELD_IGNORE_BITS (type) = | |
3370 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
3371 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
3372 | } | |
3373 | ||
c378eb4e MS |
3374 | /* Copy the saved-up fields into the field vector. Start from the |
3375 | head of the list, adding to the tail of the field array, so that | |
3376 | they end up in the same order in the array in which they were | |
3377 | added to the list. */ | |
c906108c SS |
3378 | |
3379 | while (nfields-- > 0) | |
3380 | { | |
c5aa993b JM |
3381 | TYPE_FIELD (type, nfields) = fip->list->field; |
3382 | switch (fip->list->visibility) | |
c906108c | 3383 | { |
c5aa993b JM |
3384 | case VISIBILITY_PRIVATE: |
3385 | SET_TYPE_FIELD_PRIVATE (type, nfields); | |
3386 | break; | |
c906108c | 3387 | |
c5aa993b JM |
3388 | case VISIBILITY_PROTECTED: |
3389 | SET_TYPE_FIELD_PROTECTED (type, nfields); | |
3390 | break; | |
c906108c | 3391 | |
c5aa993b JM |
3392 | case VISIBILITY_IGNORE: |
3393 | SET_TYPE_FIELD_IGNORE (type, nfields); | |
3394 | break; | |
c906108c | 3395 | |
c5aa993b JM |
3396 | case VISIBILITY_PUBLIC: |
3397 | break; | |
c906108c | 3398 | |
c5aa993b JM |
3399 | default: |
3400 | /* Unknown visibility. Complain and treat it as public. */ | |
3401 | { | |
3e43a32a MS |
3402 | complaint (&symfile_complaints, |
3403 | _("Unknown visibility `%c' for field"), | |
23136709 | 3404 | fip->list->visibility); |
c5aa993b JM |
3405 | } |
3406 | break; | |
c906108c | 3407 | } |
c5aa993b | 3408 | fip->list = fip->list->next; |
c906108c SS |
3409 | } |
3410 | return 1; | |
3411 | } | |
3412 | ||
2ae1c2d2 | 3413 | |
2ae1c2d2 JB |
3414 | /* Complain that the compiler has emitted more than one definition for the |
3415 | structure type TYPE. */ | |
3416 | static void | |
3417 | complain_about_struct_wipeout (struct type *type) | |
3418 | { | |
0d5cff50 DE |
3419 | const char *name = ""; |
3420 | const char *kind = ""; | |
2ae1c2d2 JB |
3421 | |
3422 | if (TYPE_TAG_NAME (type)) | |
3423 | { | |
3424 | name = TYPE_TAG_NAME (type); | |
3425 | switch (TYPE_CODE (type)) | |
3426 | { | |
3427 | case TYPE_CODE_STRUCT: kind = "struct "; break; | |
3428 | case TYPE_CODE_UNION: kind = "union "; break; | |
3429 | case TYPE_CODE_ENUM: kind = "enum "; break; | |
3430 | default: kind = ""; | |
3431 | } | |
3432 | } | |
3433 | else if (TYPE_NAME (type)) | |
3434 | { | |
3435 | name = TYPE_NAME (type); | |
3436 | kind = ""; | |
3437 | } | |
3438 | else | |
3439 | { | |
3440 | name = "<unknown>"; | |
3441 | kind = ""; | |
3442 | } | |
3443 | ||
23136709 | 3444 | complaint (&symfile_complaints, |
e2e0b3e5 | 3445 | _("struct/union type gets multiply defined: %s%s"), kind, name); |
2ae1c2d2 JB |
3446 | } |
3447 | ||
621791b8 PM |
3448 | /* Set the length for all variants of a same main_type, which are |
3449 | connected in the closed chain. | |
3450 | ||
3451 | This is something that needs to be done when a type is defined *after* | |
3452 | some cross references to this type have already been read. Consider | |
3453 | for instance the following scenario where we have the following two | |
3454 | stabs entries: | |
3455 | ||
3456 | .stabs "t:p(0,21)=*(0,22)=k(0,23)=xsdummy:",160,0,28,-24 | |
3457 | .stabs "dummy:T(0,23)=s16x:(0,1),0,3[...]" | |
3458 | ||
3459 | A stubbed version of type dummy is created while processing the first | |
3460 | stabs entry. The length of that type is initially set to zero, since | |
3461 | it is unknown at this point. Also, a "constant" variation of type | |
3462 | "dummy" is created as well (this is the "(0,22)=k(0,23)" section of | |
3463 | the stabs line). | |
3464 | ||
3465 | The second stabs entry allows us to replace the stubbed definition | |
3466 | with the real definition. However, we still need to adjust the length | |
3467 | of the "constant" variation of that type, as its length was left | |
3468 | untouched during the main type replacement... */ | |
3469 | ||
3470 | static void | |
9e69f3b6 | 3471 | set_length_in_type_chain (struct type *type) |
621791b8 PM |
3472 | { |
3473 | struct type *ntype = TYPE_CHAIN (type); | |
3474 | ||
3475 | while (ntype != type) | |
3476 | { | |
3477 | if (TYPE_LENGTH(ntype) == 0) | |
3478 | TYPE_LENGTH (ntype) = TYPE_LENGTH (type); | |
3479 | else | |
3480 | complain_about_struct_wipeout (ntype); | |
3481 | ntype = TYPE_CHAIN (ntype); | |
3482 | } | |
3483 | } | |
2ae1c2d2 | 3484 | |
c906108c SS |
3485 | /* Read the description of a structure (or union type) and return an object |
3486 | describing the type. | |
3487 | ||
3488 | PP points to a character pointer that points to the next unconsumed token | |
b021a221 | 3489 | in the stabs string. For example, given stabs "A:T4=s4a:1,0,32;;", |
c906108c SS |
3490 | *PP will point to "4a:1,0,32;;". |
3491 | ||
3492 | TYPE points to an incomplete type that needs to be filled in. | |
3493 | ||
3494 | OBJFILE points to the current objfile from which the stabs information is | |
3495 | being read. (Note that it is redundant in that TYPE also contains a pointer | |
3496 | to this same objfile, so it might be a good idea to eliminate it. FIXME). | |
c5aa993b | 3497 | */ |
c906108c SS |
3498 | |
3499 | static struct type * | |
2ae1c2d2 JB |
3500 | read_struct_type (char **pp, struct type *type, enum type_code type_code, |
3501 | struct objfile *objfile) | |
c906108c SS |
3502 | { |
3503 | struct cleanup *back_to; | |
3504 | struct field_info fi; | |
3505 | ||
3506 | fi.list = NULL; | |
3507 | fi.fnlist = NULL; | |
3508 | ||
2ae1c2d2 JB |
3509 | /* When describing struct/union/class types in stabs, G++ always drops |
3510 | all qualifications from the name. So if you've got: | |
3511 | struct A { ... struct B { ... }; ... }; | |
3512 | then G++ will emit stabs for `struct A::B' that call it simply | |
3513 | `struct B'. Obviously, if you've got a real top-level definition for | |
3514 | `struct B', or other nested definitions, this is going to cause | |
3515 | problems. | |
3516 | ||
3517 | Obviously, GDB can't fix this by itself, but it can at least avoid | |
3518 | scribbling on existing structure type objects when new definitions | |
3519 | appear. */ | |
3520 | if (! (TYPE_CODE (type) == TYPE_CODE_UNDEF | |
3521 | || TYPE_STUB (type))) | |
3522 | { | |
3523 | complain_about_struct_wipeout (type); | |
3524 | ||
3525 | /* It's probably best to return the type unchanged. */ | |
3526 | return type; | |
3527 | } | |
3528 | ||
c906108c SS |
3529 | back_to = make_cleanup (null_cleanup, 0); |
3530 | ||
3531 | INIT_CPLUS_SPECIFIC (type); | |
2ae1c2d2 | 3532 | TYPE_CODE (type) = type_code; |
876cecd0 | 3533 | TYPE_STUB (type) = 0; |
c906108c SS |
3534 | |
3535 | /* First comes the total size in bytes. */ | |
3536 | ||
3537 | { | |
3538 | int nbits; | |
433759f7 | 3539 | |
94e10a22 | 3540 | TYPE_LENGTH (type) = read_huge_number (pp, 0, &nbits, 0); |
c906108c | 3541 | if (nbits != 0) |
73b8d9da TT |
3542 | { |
3543 | do_cleanups (back_to); | |
3544 | return error_type (pp, objfile); | |
3545 | } | |
621791b8 | 3546 | set_length_in_type_chain (type); |
c906108c SS |
3547 | } |
3548 | ||
3549 | /* Now read the baseclasses, if any, read the regular C struct or C++ | |
3550 | class member fields, attach the fields to the type, read the C++ | |
3551 | member functions, attach them to the type, and then read any tilde | |
3e43a32a | 3552 | field (baseclass specifier for the class holding the main vtable). */ |
c906108c SS |
3553 | |
3554 | if (!read_baseclasses (&fi, pp, type, objfile) | |
3555 | || !read_struct_fields (&fi, pp, type, objfile) | |
3556 | || !attach_fields_to_type (&fi, type, objfile) | |
3557 | || !read_member_functions (&fi, pp, type, objfile) | |
3558 | || !attach_fn_fields_to_type (&fi, type) | |
3559 | || !read_tilde_fields (&fi, pp, type, objfile)) | |
3560 | { | |
3561 | type = error_type (pp, objfile); | |
3562 | } | |
3563 | ||
3564 | do_cleanups (back_to); | |
3565 | return (type); | |
3566 | } | |
3567 | ||
3568 | /* Read a definition of an array type, | |
3569 | and create and return a suitable type object. | |
3570 | Also creates a range type which represents the bounds of that | |
3571 | array. */ | |
3572 | ||
3573 | static struct type * | |
aa1ee363 | 3574 | read_array_type (char **pp, struct type *type, |
fba45db2 | 3575 | struct objfile *objfile) |
c906108c SS |
3576 | { |
3577 | struct type *index_type, *element_type, *range_type; | |
3578 | int lower, upper; | |
3579 | int adjustable = 0; | |
3580 | int nbits; | |
3581 | ||
3582 | /* Format of an array type: | |
3583 | "ar<index type>;lower;upper;<array_contents_type>". | |
3584 | OS9000: "arlower,upper;<array_contents_type>". | |
3585 | ||
3586 | Fortran adjustable arrays use Adigits or Tdigits for lower or upper; | |
3587 | for these, produce a type like float[][]. */ | |
3588 | ||
c906108c SS |
3589 | { |
3590 | index_type = read_type (pp, objfile); | |
3591 | if (**pp != ';') | |
3592 | /* Improper format of array type decl. */ | |
3593 | return error_type (pp, objfile); | |
3594 | ++*pp; | |
3595 | } | |
3596 | ||
3597 | if (!(**pp >= '0' && **pp <= '9') && **pp != '-') | |
3598 | { | |
3599 | (*pp)++; | |
3600 | adjustable = 1; | |
3601 | } | |
94e10a22 | 3602 | lower = read_huge_number (pp, ';', &nbits, 0); |
cdecafbe | 3603 | |
c906108c SS |
3604 | if (nbits != 0) |
3605 | return error_type (pp, objfile); | |
3606 | ||
3607 | if (!(**pp >= '0' && **pp <= '9') && **pp != '-') | |
3608 | { | |
3609 | (*pp)++; | |
3610 | adjustable = 1; | |
3611 | } | |
94e10a22 | 3612 | upper = read_huge_number (pp, ';', &nbits, 0); |
c906108c SS |
3613 | if (nbits != 0) |
3614 | return error_type (pp, objfile); | |
c5aa993b | 3615 | |
c906108c SS |
3616 | element_type = read_type (pp, objfile); |
3617 | ||
3618 | if (adjustable) | |
3619 | { | |
3620 | lower = 0; | |
3621 | upper = -1; | |
3622 | } | |
3623 | ||
3624 | range_type = | |
0c9c3474 | 3625 | create_static_range_type ((struct type *) NULL, index_type, lower, upper); |
c906108c SS |
3626 | type = create_array_type (type, element_type, range_type); |
3627 | ||
3628 | return type; | |
3629 | } | |
3630 | ||
3631 | ||
3632 | /* Read a definition of an enumeration type, | |
3633 | and create and return a suitable type object. | |
3634 | Also defines the symbols that represent the values of the type. */ | |
3635 | ||
3636 | static struct type * | |
aa1ee363 | 3637 | read_enum_type (char **pp, struct type *type, |
fba45db2 | 3638 | struct objfile *objfile) |
c906108c | 3639 | { |
5e2b427d | 3640 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
52f0bd74 | 3641 | char *p; |
c906108c | 3642 | char *name; |
52f0bd74 AC |
3643 | long n; |
3644 | struct symbol *sym; | |
c906108c SS |
3645 | int nsyms = 0; |
3646 | struct pending **symlist; | |
3647 | struct pending *osyms, *syms; | |
3648 | int o_nsyms; | |
3649 | int nbits; | |
3650 | int unsigned_enum = 1; | |
3651 | ||
3652 | #if 0 | |
3653 | /* FIXME! The stabs produced by Sun CC merrily define things that ought | |
3654 | to be file-scope, between N_FN entries, using N_LSYM. What's a mother | |
3655 | to do? For now, force all enum values to file scope. */ | |
3656 | if (within_function) | |
3657 | symlist = &local_symbols; | |
3658 | else | |
3659 | #endif | |
3660 | symlist = &file_symbols; | |
3661 | osyms = *symlist; | |
3662 | o_nsyms = osyms ? osyms->nsyms : 0; | |
3663 | ||
c906108c SS |
3664 | /* The aix4 compiler emits an extra field before the enum members; |
3665 | my guess is it's a type of some sort. Just ignore it. */ | |
3666 | if (**pp == '-') | |
3667 | { | |
3668 | /* Skip over the type. */ | |
3669 | while (**pp != ':') | |
c5aa993b | 3670 | (*pp)++; |
c906108c SS |
3671 | |
3672 | /* Skip over the colon. */ | |
3673 | (*pp)++; | |
3674 | } | |
3675 | ||
3676 | /* Read the value-names and their values. | |
3677 | The input syntax is NAME:VALUE,NAME:VALUE, and so on. | |
3678 | A semicolon or comma instead of a NAME means the end. */ | |
3679 | while (**pp && **pp != ';' && **pp != ',') | |
3680 | { | |
3681 | STABS_CONTINUE (pp, objfile); | |
3682 | p = *pp; | |
c5aa993b JM |
3683 | while (*p != ':') |
3684 | p++; | |
10f0c4bb | 3685 | name = obstack_copy0 (&objfile->objfile_obstack, *pp, p - *pp); |
c906108c | 3686 | *pp = p + 1; |
94e10a22 | 3687 | n = read_huge_number (pp, ',', &nbits, 0); |
c906108c SS |
3688 | if (nbits != 0) |
3689 | return error_type (pp, objfile); | |
3690 | ||
e623cf5d | 3691 | sym = allocate_symbol (objfile); |
3567439c | 3692 | SYMBOL_SET_LINKAGE_NAME (sym, name); |
f85f34ed TT |
3693 | SYMBOL_SET_LANGUAGE (sym, current_subfile->language, |
3694 | &objfile->objfile_obstack); | |
f1e6e072 | 3695 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
176620f1 | 3696 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
3697 | SYMBOL_VALUE (sym) = n; |
3698 | if (n < 0) | |
3699 | unsigned_enum = 0; | |
3700 | add_symbol_to_list (sym, symlist); | |
3701 | nsyms++; | |
3702 | } | |
3703 | ||
3704 | if (**pp == ';') | |
3705 | (*pp)++; /* Skip the semicolon. */ | |
3706 | ||
3707 | /* Now fill in the fields of the type-structure. */ | |
3708 | ||
5e2b427d | 3709 | TYPE_LENGTH (type) = gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT; |
621791b8 | 3710 | set_length_in_type_chain (type); |
c906108c | 3711 | TYPE_CODE (type) = TYPE_CODE_ENUM; |
876cecd0 | 3712 | TYPE_STUB (type) = 0; |
c906108c | 3713 | if (unsigned_enum) |
876cecd0 | 3714 | TYPE_UNSIGNED (type) = 1; |
c906108c SS |
3715 | TYPE_NFIELDS (type) = nsyms; |
3716 | TYPE_FIELDS (type) = (struct field *) | |
3717 | TYPE_ALLOC (type, sizeof (struct field) * nsyms); | |
3718 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nsyms); | |
3719 | ||
3720 | /* Find the symbols for the values and put them into the type. | |
3721 | The symbols can be found in the symlist that we put them on | |
3722 | to cause them to be defined. osyms contains the old value | |
3723 | of that symlist; everything up to there was defined by us. */ | |
3724 | /* Note that we preserve the order of the enum constants, so | |
3725 | that in something like "enum {FOO, LAST_THING=FOO}" we print | |
3726 | FOO, not LAST_THING. */ | |
3727 | ||
3728 | for (syms = *symlist, n = nsyms - 1; syms; syms = syms->next) | |
3729 | { | |
3730 | int last = syms == osyms ? o_nsyms : 0; | |
3731 | int j = syms->nsyms; | |
433759f7 | 3732 | |
c906108c SS |
3733 | for (; --j >= last; --n) |
3734 | { | |
3735 | struct symbol *xsym = syms->symbol[j]; | |
433759f7 | 3736 | |
c906108c | 3737 | SYMBOL_TYPE (xsym) = type; |
3567439c | 3738 | TYPE_FIELD_NAME (type, n) = SYMBOL_LINKAGE_NAME (xsym); |
14e75d8e | 3739 | SET_FIELD_ENUMVAL (TYPE_FIELD (type, n), SYMBOL_VALUE (xsym)); |
c906108c SS |
3740 | TYPE_FIELD_BITSIZE (type, n) = 0; |
3741 | } | |
3742 | if (syms == osyms) | |
3743 | break; | |
3744 | } | |
3745 | ||
3746 | return type; | |
3747 | } | |
3748 | ||
3749 | /* Sun's ACC uses a somewhat saner method for specifying the builtin | |
3750 | typedefs in every file (for int, long, etc): | |
3751 | ||
c5aa993b JM |
3752 | type = b <signed> <width> <format type>; <offset>; <nbits> |
3753 | signed = u or s. | |
3754 | optional format type = c or b for char or boolean. | |
3755 | offset = offset from high order bit to start bit of type. | |
3756 | width is # bytes in object of this type, nbits is # bits in type. | |
c906108c SS |
3757 | |
3758 | The width/offset stuff appears to be for small objects stored in | |
3759 | larger ones (e.g. `shorts' in `int' registers). We ignore it for now, | |
3760 | FIXME. */ | |
3761 | ||
3762 | static struct type * | |
35a2f538 | 3763 | read_sun_builtin_type (char **pp, int typenums[2], struct objfile *objfile) |
c906108c SS |
3764 | { |
3765 | int type_bits; | |
3766 | int nbits; | |
3767 | int signed_type; | |
3768 | enum type_code code = TYPE_CODE_INT; | |
3769 | ||
3770 | switch (**pp) | |
3771 | { | |
c5aa993b JM |
3772 | case 's': |
3773 | signed_type = 1; | |
3774 | break; | |
3775 | case 'u': | |
3776 | signed_type = 0; | |
3777 | break; | |
3778 | default: | |
3779 | return error_type (pp, objfile); | |
c906108c SS |
3780 | } |
3781 | (*pp)++; | |
3782 | ||
3783 | /* For some odd reason, all forms of char put a c here. This is strange | |
3784 | because no other type has this honor. We can safely ignore this because | |
3785 | we actually determine 'char'acterness by the number of bits specified in | |
3786 | the descriptor. | |
3787 | Boolean forms, e.g Fortran logical*X, put a b here. */ | |
3788 | ||
3789 | if (**pp == 'c') | |
3790 | (*pp)++; | |
3791 | else if (**pp == 'b') | |
3792 | { | |
3793 | code = TYPE_CODE_BOOL; | |
3794 | (*pp)++; | |
3795 | } | |
3796 | ||
3797 | /* The first number appears to be the number of bytes occupied | |
3798 | by this type, except that unsigned short is 4 instead of 2. | |
3799 | Since this information is redundant with the third number, | |
3800 | we will ignore it. */ | |
94e10a22 | 3801 | read_huge_number (pp, ';', &nbits, 0); |
c906108c SS |
3802 | if (nbits != 0) |
3803 | return error_type (pp, objfile); | |
3804 | ||
c378eb4e | 3805 | /* The second number is always 0, so ignore it too. */ |
94e10a22 | 3806 | read_huge_number (pp, ';', &nbits, 0); |
c906108c SS |
3807 | if (nbits != 0) |
3808 | return error_type (pp, objfile); | |
3809 | ||
c378eb4e | 3810 | /* The third number is the number of bits for this type. */ |
94e10a22 | 3811 | type_bits = read_huge_number (pp, 0, &nbits, 0); |
c906108c SS |
3812 | if (nbits != 0) |
3813 | return error_type (pp, objfile); | |
3814 | /* The type *should* end with a semicolon. If it are embedded | |
3815 | in a larger type the semicolon may be the only way to know where | |
3816 | the type ends. If this type is at the end of the stabstring we | |
3817 | can deal with the omitted semicolon (but we don't have to like | |
3818 | it). Don't bother to complain(), Sun's compiler omits the semicolon | |
3819 | for "void". */ | |
3820 | if (**pp == ';') | |
3821 | ++(*pp); | |
3822 | ||
3823 | if (type_bits == 0) | |
3824 | return init_type (TYPE_CODE_VOID, 1, | |
c5aa993b | 3825 | signed_type ? 0 : TYPE_FLAG_UNSIGNED, (char *) NULL, |
c906108c SS |
3826 | objfile); |
3827 | else | |
3828 | return init_type (code, | |
3829 | type_bits / TARGET_CHAR_BIT, | |
c5aa993b | 3830 | signed_type ? 0 : TYPE_FLAG_UNSIGNED, (char *) NULL, |
c906108c SS |
3831 | objfile); |
3832 | } | |
3833 | ||
3834 | static struct type * | |
35a2f538 | 3835 | read_sun_floating_type (char **pp, int typenums[2], struct objfile *objfile) |
c906108c SS |
3836 | { |
3837 | int nbits; | |
3838 | int details; | |
3839 | int nbytes; | |
f65ca430 | 3840 | struct type *rettype; |
c906108c SS |
3841 | |
3842 | /* The first number has more details about the type, for example | |
3843 | FN_COMPLEX. */ | |
94e10a22 | 3844 | details = read_huge_number (pp, ';', &nbits, 0); |
c906108c SS |
3845 | if (nbits != 0) |
3846 | return error_type (pp, objfile); | |
3847 | ||
c378eb4e | 3848 | /* The second number is the number of bytes occupied by this type. */ |
94e10a22 | 3849 | nbytes = read_huge_number (pp, ';', &nbits, 0); |
c906108c SS |
3850 | if (nbits != 0) |
3851 | return error_type (pp, objfile); | |
3852 | ||
3853 | if (details == NF_COMPLEX || details == NF_COMPLEX16 | |
3854 | || details == NF_COMPLEX32) | |
f65ca430 DJ |
3855 | { |
3856 | rettype = init_type (TYPE_CODE_COMPLEX, nbytes, 0, NULL, objfile); | |
3857 | TYPE_TARGET_TYPE (rettype) | |
3858 | = init_type (TYPE_CODE_FLT, nbytes / 2, 0, NULL, objfile); | |
3859 | return rettype; | |
3860 | } | |
c906108c SS |
3861 | |
3862 | return init_type (TYPE_CODE_FLT, nbytes, 0, NULL, objfile); | |
3863 | } | |
3864 | ||
3865 | /* Read a number from the string pointed to by *PP. | |
3866 | The value of *PP is advanced over the number. | |
3867 | If END is nonzero, the character that ends the | |
3868 | number must match END, or an error happens; | |
3869 | and that character is skipped if it does match. | |
3870 | If END is zero, *PP is left pointing to that character. | |
3871 | ||
94e10a22 JG |
3872 | If TWOS_COMPLEMENT_BITS is set to a strictly positive value and if |
3873 | the number is represented in an octal representation, assume that | |
3874 | it is represented in a 2's complement representation with a size of | |
3875 | TWOS_COMPLEMENT_BITS. | |
3876 | ||
c906108c SS |
3877 | If the number fits in a long, set *BITS to 0 and return the value. |
3878 | If not, set *BITS to be the number of bits in the number and return 0. | |
3879 | ||
3880 | If encounter garbage, set *BITS to -1 and return 0. */ | |
3881 | ||
c2d11a7d | 3882 | static long |
94e10a22 | 3883 | read_huge_number (char **pp, int end, int *bits, int twos_complement_bits) |
c906108c SS |
3884 | { |
3885 | char *p = *pp; | |
3886 | int sign = 1; | |
51e9e0d4 | 3887 | int sign_bit = 0; |
c2d11a7d | 3888 | long n = 0; |
c906108c SS |
3889 | int radix = 10; |
3890 | char overflow = 0; | |
3891 | int nbits = 0; | |
3892 | int c; | |
c2d11a7d | 3893 | long upper_limit; |
a2699720 | 3894 | int twos_complement_representation = 0; |
c5aa993b | 3895 | |
c906108c SS |
3896 | if (*p == '-') |
3897 | { | |
3898 | sign = -1; | |
3899 | p++; | |
3900 | } | |
3901 | ||
3902 | /* Leading zero means octal. GCC uses this to output values larger | |
3903 | than an int (because that would be hard in decimal). */ | |
3904 | if (*p == '0') | |
3905 | { | |
3906 | radix = 8; | |
3907 | p++; | |
3908 | } | |
3909 | ||
a2699720 PA |
3910 | /* Skip extra zeros. */ |
3911 | while (*p == '0') | |
3912 | p++; | |
3913 | ||
3914 | if (sign > 0 && radix == 8 && twos_complement_bits > 0) | |
3915 | { | |
3916 | /* Octal, possibly signed. Check if we have enough chars for a | |
3917 | negative number. */ | |
3918 | ||
3919 | size_t len; | |
3920 | char *p1 = p; | |
433759f7 | 3921 | |
a2699720 PA |
3922 | while ((c = *p1) >= '0' && c < '8') |
3923 | p1++; | |
3924 | ||
3925 | len = p1 - p; | |
3926 | if (len > twos_complement_bits / 3 | |
3e43a32a MS |
3927 | || (twos_complement_bits % 3 == 0 |
3928 | && len == twos_complement_bits / 3)) | |
a2699720 PA |
3929 | { |
3930 | /* Ok, we have enough characters for a signed value, check | |
3931 | for signness by testing if the sign bit is set. */ | |
3932 | sign_bit = (twos_complement_bits % 3 + 2) % 3; | |
3933 | c = *p - '0'; | |
3934 | if (c & (1 << sign_bit)) | |
3935 | { | |
3936 | /* Definitely signed. */ | |
3937 | twos_complement_representation = 1; | |
3938 | sign = -1; | |
3939 | } | |
3940 | } | |
3941 | } | |
3942 | ||
1b831c93 | 3943 | upper_limit = LONG_MAX / radix; |
c906108c SS |
3944 | |
3945 | while ((c = *p++) >= '0' && c < ('0' + radix)) | |
3946 | { | |
3947 | if (n <= upper_limit) | |
94e10a22 JG |
3948 | { |
3949 | if (twos_complement_representation) | |
3950 | { | |
a2699720 PA |
3951 | /* Octal, signed, twos complement representation. In |
3952 | this case, n is the corresponding absolute value. */ | |
3953 | if (n == 0) | |
3954 | { | |
3955 | long sn = c - '0' - ((2 * (c - '0')) | (2 << sign_bit)); | |
433759f7 | 3956 | |
a2699720 PA |
3957 | n = -sn; |
3958 | } | |
94e10a22 JG |
3959 | else |
3960 | { | |
a2699720 PA |
3961 | n *= radix; |
3962 | n -= c - '0'; | |
94e10a22 | 3963 | } |
94e10a22 JG |
3964 | } |
3965 | else | |
3966 | { | |
3967 | /* unsigned representation */ | |
3968 | n *= radix; | |
c378eb4e | 3969 | n += c - '0'; /* FIXME this overflows anyway. */ |
94e10a22 JG |
3970 | } |
3971 | } | |
c906108c | 3972 | else |
94e10a22 | 3973 | overflow = 1; |
c5aa993b | 3974 | |
c906108c | 3975 | /* This depends on large values being output in octal, which is |
c378eb4e | 3976 | what GCC does. */ |
c906108c SS |
3977 | if (radix == 8) |
3978 | { | |
3979 | if (nbits == 0) | |
3980 | { | |
3981 | if (c == '0') | |
3982 | /* Ignore leading zeroes. */ | |
3983 | ; | |
3984 | else if (c == '1') | |
3985 | nbits = 1; | |
3986 | else if (c == '2' || c == '3') | |
3987 | nbits = 2; | |
3988 | else | |
3989 | nbits = 3; | |
3990 | } | |
3991 | else | |
3992 | nbits += 3; | |
3993 | } | |
3994 | } | |
3995 | if (end) | |
3996 | { | |
3997 | if (c && c != end) | |
3998 | { | |
3999 | if (bits != NULL) | |
4000 | *bits = -1; | |
4001 | return 0; | |
4002 | } | |
4003 | } | |
4004 | else | |
4005 | --p; | |
4006 | ||
a2699720 PA |
4007 | if (radix == 8 && twos_complement_bits > 0 && nbits > twos_complement_bits) |
4008 | { | |
4009 | /* We were supposed to parse a number with maximum | |
4010 | TWOS_COMPLEMENT_BITS bits, but something went wrong. */ | |
4011 | if (bits != NULL) | |
4012 | *bits = -1; | |
4013 | return 0; | |
4014 | } | |
4015 | ||
c906108c SS |
4016 | *pp = p; |
4017 | if (overflow) | |
4018 | { | |
4019 | if (nbits == 0) | |
4020 | { | |
4021 | /* Large decimal constants are an error (because it is hard to | |
4022 | count how many bits are in them). */ | |
4023 | if (bits != NULL) | |
4024 | *bits = -1; | |
4025 | return 0; | |
4026 | } | |
c5aa993b | 4027 | |
c906108c | 4028 | /* -0x7f is the same as 0x80. So deal with it by adding one to |
a2699720 PA |
4029 | the number of bits. Two's complement represention octals |
4030 | can't have a '-' in front. */ | |
4031 | if (sign == -1 && !twos_complement_representation) | |
c906108c SS |
4032 | ++nbits; |
4033 | if (bits) | |
4034 | *bits = nbits; | |
4035 | } | |
4036 | else | |
4037 | { | |
4038 | if (bits) | |
4039 | *bits = 0; | |
a2699720 | 4040 | return n * sign; |
c906108c SS |
4041 | } |
4042 | /* It's *BITS which has the interesting information. */ | |
4043 | return 0; | |
4044 | } | |
4045 | ||
4046 | static struct type * | |
94e10a22 JG |
4047 | read_range_type (char **pp, int typenums[2], int type_size, |
4048 | struct objfile *objfile) | |
c906108c | 4049 | { |
5e2b427d | 4050 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
4051 | char *orig_pp = *pp; |
4052 | int rangenums[2]; | |
c2d11a7d | 4053 | long n2, n3; |
c906108c SS |
4054 | int n2bits, n3bits; |
4055 | int self_subrange; | |
4056 | struct type *result_type; | |
4057 | struct type *index_type = NULL; | |
4058 | ||
4059 | /* First comes a type we are a subrange of. | |
4060 | In C it is usually 0, 1 or the type being defined. */ | |
4061 | if (read_type_number (pp, rangenums) != 0) | |
4062 | return error_type (pp, objfile); | |
4063 | self_subrange = (rangenums[0] == typenums[0] && | |
4064 | rangenums[1] == typenums[1]); | |
4065 | ||
4066 | if (**pp == '=') | |
4067 | { | |
4068 | *pp = orig_pp; | |
4069 | index_type = read_type (pp, objfile); | |
4070 | } | |
4071 | ||
4072 | /* A semicolon should now follow; skip it. */ | |
4073 | if (**pp == ';') | |
4074 | (*pp)++; | |
4075 | ||
4076 | /* The remaining two operands are usually lower and upper bounds | |
4077 | of the range. But in some special cases they mean something else. */ | |
94e10a22 JG |
4078 | n2 = read_huge_number (pp, ';', &n2bits, type_size); |
4079 | n3 = read_huge_number (pp, ';', &n3bits, type_size); | |
c906108c SS |
4080 | |
4081 | if (n2bits == -1 || n3bits == -1) | |
4082 | return error_type (pp, objfile); | |
4083 | ||
4084 | if (index_type) | |
4085 | goto handle_true_range; | |
4086 | ||
4087 | /* If limits are huge, must be large integral type. */ | |
4088 | if (n2bits != 0 || n3bits != 0) | |
4089 | { | |
4090 | char got_signed = 0; | |
4091 | char got_unsigned = 0; | |
4092 | /* Number of bits in the type. */ | |
4093 | int nbits = 0; | |
4094 | ||
94e10a22 | 4095 | /* If a type size attribute has been specified, the bounds of |
c378eb4e | 4096 | the range should fit in this size. If the lower bounds needs |
94e10a22 JG |
4097 | more bits than the upper bound, then the type is signed. */ |
4098 | if (n2bits <= type_size && n3bits <= type_size) | |
4099 | { | |
4100 | if (n2bits == type_size && n2bits > n3bits) | |
4101 | got_signed = 1; | |
4102 | else | |
4103 | got_unsigned = 1; | |
4104 | nbits = type_size; | |
4105 | } | |
c906108c | 4106 | /* Range from 0 to <large number> is an unsigned large integral type. */ |
94e10a22 | 4107 | else if ((n2bits == 0 && n2 == 0) && n3bits != 0) |
c906108c SS |
4108 | { |
4109 | got_unsigned = 1; | |
4110 | nbits = n3bits; | |
4111 | } | |
4112 | /* Range from <large number> to <large number>-1 is a large signed | |
c5aa993b JM |
4113 | integral type. Take care of the case where <large number> doesn't |
4114 | fit in a long but <large number>-1 does. */ | |
c906108c SS |
4115 | else if ((n2bits != 0 && n3bits != 0 && n2bits == n3bits + 1) |
4116 | || (n2bits != 0 && n3bits == 0 | |
c2d11a7d JM |
4117 | && (n2bits == sizeof (long) * HOST_CHAR_BIT) |
4118 | && n3 == LONG_MAX)) | |
c906108c SS |
4119 | { |
4120 | got_signed = 1; | |
4121 | nbits = n2bits; | |
4122 | } | |
4123 | ||
4124 | if (got_signed || got_unsigned) | |
4125 | { | |
4126 | return init_type (TYPE_CODE_INT, nbits / TARGET_CHAR_BIT, | |
4127 | got_unsigned ? TYPE_FLAG_UNSIGNED : 0, NULL, | |
4128 | objfile); | |
4129 | } | |
4130 | else | |
4131 | return error_type (pp, objfile); | |
4132 | } | |
4133 | ||
4134 | /* A type defined as a subrange of itself, with bounds both 0, is void. */ | |
4135 | if (self_subrange && n2 == 0 && n3 == 0) | |
4136 | return init_type (TYPE_CODE_VOID, 1, 0, NULL, objfile); | |
4137 | ||
4138 | /* If n3 is zero and n2 is positive, we want a floating type, and n2 | |
4139 | is the width in bytes. | |
4140 | ||
4141 | Fortran programs appear to use this for complex types also. To | |
4142 | distinguish between floats and complex, g77 (and others?) seem | |
4143 | to use self-subranges for the complexes, and subranges of int for | |
4144 | the floats. | |
4145 | ||
4146 | Also note that for complexes, g77 sets n2 to the size of one of | |
4147 | the member floats, not the whole complex beast. My guess is that | |
c378eb4e | 4148 | this was to work well with pre-COMPLEX versions of gdb. */ |
c906108c SS |
4149 | |
4150 | if (n3 == 0 && n2 > 0) | |
4151 | { | |
1300f5dd JB |
4152 | struct type *float_type |
4153 | = init_type (TYPE_CODE_FLT, n2, 0, NULL, objfile); | |
4154 | ||
c906108c SS |
4155 | if (self_subrange) |
4156 | { | |
1300f5dd JB |
4157 | struct type *complex_type = |
4158 | init_type (TYPE_CODE_COMPLEX, 2 * n2, 0, NULL, objfile); | |
433759f7 | 4159 | |
1300f5dd JB |
4160 | TYPE_TARGET_TYPE (complex_type) = float_type; |
4161 | return complex_type; | |
c906108c SS |
4162 | } |
4163 | else | |
1300f5dd | 4164 | return float_type; |
c906108c SS |
4165 | } |
4166 | ||
a2699720 | 4167 | /* If the upper bound is -1, it must really be an unsigned integral. */ |
c906108c SS |
4168 | |
4169 | else if (n2 == 0 && n3 == -1) | |
4170 | { | |
a2699720 | 4171 | int bits = type_size; |
433759f7 | 4172 | |
a2699720 PA |
4173 | if (bits <= 0) |
4174 | { | |
4175 | /* We don't know its size. It is unsigned int or unsigned | |
4176 | long. GCC 2.3.3 uses this for long long too, but that is | |
4177 | just a GDB 3.5 compatibility hack. */ | |
5e2b427d | 4178 | bits = gdbarch_int_bit (gdbarch); |
a2699720 PA |
4179 | } |
4180 | ||
4181 | return init_type (TYPE_CODE_INT, bits / TARGET_CHAR_BIT, | |
c906108c SS |
4182 | TYPE_FLAG_UNSIGNED, NULL, objfile); |
4183 | } | |
4184 | ||
4185 | /* Special case: char is defined (Who knows why) as a subrange of | |
4186 | itself with range 0-127. */ | |
4187 | else if (self_subrange && n2 == 0 && n3 == 127) | |
973ccf8b | 4188 | return init_type (TYPE_CODE_INT, 1, TYPE_FLAG_NOSIGN, NULL, objfile); |
c906108c | 4189 | |
c906108c SS |
4190 | /* We used to do this only for subrange of self or subrange of int. */ |
4191 | else if (n2 == 0) | |
4192 | { | |
a0b3c4fd JM |
4193 | /* -1 is used for the upper bound of (4 byte) "unsigned int" and |
4194 | "unsigned long", and we already checked for that, | |
4195 | so don't need to test for it here. */ | |
4196 | ||
c906108c SS |
4197 | if (n3 < 0) |
4198 | /* n3 actually gives the size. */ | |
c5aa993b | 4199 | return init_type (TYPE_CODE_INT, -n3, TYPE_FLAG_UNSIGNED, |
c906108c | 4200 | NULL, objfile); |
c906108c | 4201 | |
7be570e7 | 4202 | /* Is n3 == 2**(8n)-1 for some integer n? Then it's an |
a0b3c4fd JM |
4203 | unsigned n-byte integer. But do require n to be a power of |
4204 | two; we don't want 3- and 5-byte integers flying around. */ | |
4205 | { | |
4206 | int bytes; | |
4207 | unsigned long bits; | |
4208 | ||
4209 | bits = n3; | |
4210 | for (bytes = 0; (bits & 0xff) == 0xff; bytes++) | |
4211 | bits >>= 8; | |
4212 | if (bits == 0 | |
4213 | && ((bytes - 1) & bytes) == 0) /* "bytes is a power of two" */ | |
4214 | return init_type (TYPE_CODE_INT, bytes, TYPE_FLAG_UNSIGNED, NULL, | |
4215 | objfile); | |
4216 | } | |
c906108c SS |
4217 | } |
4218 | /* I think this is for Convex "long long". Since I don't know whether | |
4219 | Convex sets self_subrange, I also accept that particular size regardless | |
4220 | of self_subrange. */ | |
4221 | else if (n3 == 0 && n2 < 0 | |
4222 | && (self_subrange | |
9a76efb6 | 4223 | || n2 == -gdbarch_long_long_bit |
5e2b427d | 4224 | (gdbarch) / TARGET_CHAR_BIT)) |
c5aa993b JM |
4225 | return init_type (TYPE_CODE_INT, -n2, 0, NULL, objfile); |
4226 | else if (n2 == -n3 - 1) | |
c906108c SS |
4227 | { |
4228 | if (n3 == 0x7f) | |
4229 | return init_type (TYPE_CODE_INT, 1, 0, NULL, objfile); | |
4230 | if (n3 == 0x7fff) | |
4231 | return init_type (TYPE_CODE_INT, 2, 0, NULL, objfile); | |
4232 | if (n3 == 0x7fffffff) | |
4233 | return init_type (TYPE_CODE_INT, 4, 0, NULL, objfile); | |
4234 | } | |
4235 | ||
4236 | /* We have a real range type on our hands. Allocate space and | |
4237 | return a real pointer. */ | |
c5aa993b | 4238 | handle_true_range: |
c906108c SS |
4239 | |
4240 | if (self_subrange) | |
46bf5051 | 4241 | index_type = objfile_type (objfile)->builtin_int; |
c906108c | 4242 | else |
46bf5051 | 4243 | index_type = *dbx_lookup_type (rangenums, objfile); |
c906108c SS |
4244 | if (index_type == NULL) |
4245 | { | |
4246 | /* Does this actually ever happen? Is that why we are worrying | |
4247 | about dealing with it rather than just calling error_type? */ | |
4248 | ||
23136709 | 4249 | complaint (&symfile_complaints, |
e2e0b3e5 | 4250 | _("base type %d of range type is not defined"), rangenums[1]); |
5e2b427d | 4251 | |
46bf5051 | 4252 | index_type = objfile_type (objfile)->builtin_int; |
c906108c SS |
4253 | } |
4254 | ||
0c9c3474 SA |
4255 | result_type |
4256 | = create_static_range_type ((struct type *) NULL, index_type, n2, n3); | |
c906108c SS |
4257 | return (result_type); |
4258 | } | |
4259 | ||
4260 | /* Read in an argument list. This is a list of types, separated by commas | |
0a029df5 DJ |
4261 | and terminated with END. Return the list of types read in, or NULL |
4262 | if there is an error. */ | |
c906108c | 4263 | |
ad2f7632 DJ |
4264 | static struct field * |
4265 | read_args (char **pp, int end, struct objfile *objfile, int *nargsp, | |
4266 | int *varargsp) | |
c906108c SS |
4267 | { |
4268 | /* FIXME! Remove this arbitrary limit! */ | |
c378eb4e | 4269 | struct type *types[1024]; /* Allow for fns of 1023 parameters. */ |
ad2f7632 DJ |
4270 | int n = 0, i; |
4271 | struct field *rval; | |
c906108c SS |
4272 | |
4273 | while (**pp != end) | |
4274 | { | |
4275 | if (**pp != ',') | |
4276 | /* Invalid argument list: no ','. */ | |
0a029df5 | 4277 | return NULL; |
c906108c SS |
4278 | (*pp)++; |
4279 | STABS_CONTINUE (pp, objfile); | |
4280 | types[n++] = read_type (pp, objfile); | |
4281 | } | |
c378eb4e | 4282 | (*pp)++; /* get past `end' (the ':' character). */ |
c906108c | 4283 | |
d24d8548 JK |
4284 | if (n == 0) |
4285 | { | |
4286 | /* We should read at least the THIS parameter here. Some broken stabs | |
4287 | output contained `(0,41),(0,42)=@s8;-16;,(0,43),(0,1);' where should | |
4288 | have been present ";-16,(0,43)" reference instead. This way the | |
4289 | excessive ";" marker prematurely stops the parameters parsing. */ | |
4290 | ||
4291 | complaint (&symfile_complaints, _("Invalid (empty) method arguments")); | |
4292 | *varargsp = 0; | |
4293 | } | |
4294 | else if (TYPE_CODE (types[n - 1]) != TYPE_CODE_VOID) | |
ad2f7632 | 4295 | *varargsp = 1; |
c906108c SS |
4296 | else |
4297 | { | |
ad2f7632 DJ |
4298 | n--; |
4299 | *varargsp = 0; | |
c906108c | 4300 | } |
ad2f7632 DJ |
4301 | |
4302 | rval = (struct field *) xmalloc (n * sizeof (struct field)); | |
4303 | memset (rval, 0, n * sizeof (struct field)); | |
4304 | for (i = 0; i < n; i++) | |
4305 | rval[i].type = types[i]; | |
4306 | *nargsp = n; | |
c906108c SS |
4307 | return rval; |
4308 | } | |
4309 | \f | |
4310 | /* Common block handling. */ | |
4311 | ||
4312 | /* List of symbols declared since the last BCOMM. This list is a tail | |
4313 | of local_symbols. When ECOMM is seen, the symbols on the list | |
4314 | are noted so their proper addresses can be filled in later, | |
4315 | using the common block base address gotten from the assembler | |
4316 | stabs. */ | |
4317 | ||
4318 | static struct pending *common_block; | |
4319 | static int common_block_i; | |
4320 | ||
4321 | /* Name of the current common block. We get it from the BCOMM instead of the | |
4322 | ECOMM to match IBM documentation (even though IBM puts the name both places | |
4323 | like everyone else). */ | |
4324 | static char *common_block_name; | |
4325 | ||
4326 | /* Process a N_BCOMM symbol. The storage for NAME is not guaranteed | |
4327 | to remain after this function returns. */ | |
4328 | ||
4329 | void | |
fba45db2 | 4330 | common_block_start (char *name, struct objfile *objfile) |
c906108c SS |
4331 | { |
4332 | if (common_block_name != NULL) | |
4333 | { | |
23136709 | 4334 | complaint (&symfile_complaints, |
e2e0b3e5 | 4335 | _("Invalid symbol data: common block within common block")); |
c906108c SS |
4336 | } |
4337 | common_block = local_symbols; | |
4338 | common_block_i = local_symbols ? local_symbols->nsyms : 0; | |
10f0c4bb TT |
4339 | common_block_name = obstack_copy0 (&objfile->objfile_obstack, |
4340 | name, strlen (name)); | |
c906108c SS |
4341 | } |
4342 | ||
4343 | /* Process a N_ECOMM symbol. */ | |
4344 | ||
4345 | void | |
fba45db2 | 4346 | common_block_end (struct objfile *objfile) |
c906108c SS |
4347 | { |
4348 | /* Symbols declared since the BCOMM are to have the common block | |
4349 | start address added in when we know it. common_block and | |
4350 | common_block_i point to the first symbol after the BCOMM in | |
4351 | the local_symbols list; copy the list and hang it off the | |
4352 | symbol for the common block name for later fixup. */ | |
4353 | int i; | |
4354 | struct symbol *sym; | |
fe978cb0 | 4355 | struct pending *newobj = 0; |
c906108c SS |
4356 | struct pending *next; |
4357 | int j; | |
4358 | ||
4359 | if (common_block_name == NULL) | |
4360 | { | |
e2e0b3e5 | 4361 | complaint (&symfile_complaints, _("ECOMM symbol unmatched by BCOMM")); |
c906108c SS |
4362 | return; |
4363 | } | |
4364 | ||
e623cf5d | 4365 | sym = allocate_symbol (objfile); |
c378eb4e | 4366 | /* Note: common_block_name already saved on objfile_obstack. */ |
3567439c | 4367 | SYMBOL_SET_LINKAGE_NAME (sym, common_block_name); |
f1e6e072 | 4368 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
c906108c SS |
4369 | |
4370 | /* Now we copy all the symbols which have been defined since the BCOMM. */ | |
4371 | ||
4372 | /* Copy all the struct pendings before common_block. */ | |
4373 | for (next = local_symbols; | |
4374 | next != NULL && next != common_block; | |
4375 | next = next->next) | |
4376 | { | |
4377 | for (j = 0; j < next->nsyms; j++) | |
fe978cb0 | 4378 | add_symbol_to_list (next->symbol[j], &newobj); |
c906108c SS |
4379 | } |
4380 | ||
4381 | /* Copy however much of COMMON_BLOCK we need. If COMMON_BLOCK is | |
4382 | NULL, it means copy all the local symbols (which we already did | |
4383 | above). */ | |
4384 | ||
4385 | if (common_block != NULL) | |
4386 | for (j = common_block_i; j < common_block->nsyms; j++) | |
fe978cb0 | 4387 | add_symbol_to_list (common_block->symbol[j], &newobj); |
c906108c | 4388 | |
fe978cb0 | 4389 | SYMBOL_TYPE (sym) = (struct type *) newobj; |
c906108c SS |
4390 | |
4391 | /* Should we be putting local_symbols back to what it was? | |
4392 | Does it matter? */ | |
4393 | ||
3567439c | 4394 | i = hashname (SYMBOL_LINKAGE_NAME (sym)); |
c906108c SS |
4395 | SYMBOL_VALUE_CHAIN (sym) = global_sym_chain[i]; |
4396 | global_sym_chain[i] = sym; | |
4397 | common_block_name = NULL; | |
4398 | } | |
4399 | ||
4400 | /* Add a common block's start address to the offset of each symbol | |
4401 | declared to be in it (by being between a BCOMM/ECOMM pair that uses | |
4402 | the common block name). */ | |
4403 | ||
4404 | static void | |
46cb6474 | 4405 | fix_common_block (struct symbol *sym, CORE_ADDR valu) |
c906108c SS |
4406 | { |
4407 | struct pending *next = (struct pending *) SYMBOL_TYPE (sym); | |
433759f7 | 4408 | |
c5aa993b | 4409 | for (; next; next = next->next) |
c906108c | 4410 | { |
aa1ee363 | 4411 | int j; |
433759f7 | 4412 | |
c906108c SS |
4413 | for (j = next->nsyms - 1; j >= 0; j--) |
4414 | SYMBOL_VALUE_ADDRESS (next->symbol[j]) += valu; | |
4415 | } | |
4416 | } | |
c5aa993b | 4417 | \f |
c906108c SS |
4418 | |
4419 | ||
bf362611 JB |
4420 | /* Add {TYPE, TYPENUMS} to the NONAME_UNDEFS vector. |
4421 | See add_undefined_type for more details. */ | |
c906108c | 4422 | |
a7a48797 | 4423 | static void |
bf362611 JB |
4424 | add_undefined_type_noname (struct type *type, int typenums[2]) |
4425 | { | |
4426 | struct nat nat; | |
4427 | ||
4428 | nat.typenums[0] = typenums [0]; | |
4429 | nat.typenums[1] = typenums [1]; | |
4430 | nat.type = type; | |
4431 | ||
4432 | if (noname_undefs_length == noname_undefs_allocated) | |
4433 | { | |
4434 | noname_undefs_allocated *= 2; | |
4435 | noname_undefs = (struct nat *) | |
4436 | xrealloc ((char *) noname_undefs, | |
4437 | noname_undefs_allocated * sizeof (struct nat)); | |
4438 | } | |
4439 | noname_undefs[noname_undefs_length++] = nat; | |
4440 | } | |
4441 | ||
4442 | /* Add TYPE to the UNDEF_TYPES vector. | |
4443 | See add_undefined_type for more details. */ | |
4444 | ||
4445 | static void | |
4446 | add_undefined_type_1 (struct type *type) | |
c906108c SS |
4447 | { |
4448 | if (undef_types_length == undef_types_allocated) | |
4449 | { | |
4450 | undef_types_allocated *= 2; | |
4451 | undef_types = (struct type **) | |
4452 | xrealloc ((char *) undef_types, | |
4453 | undef_types_allocated * sizeof (struct type *)); | |
4454 | } | |
4455 | undef_types[undef_types_length++] = type; | |
4456 | } | |
4457 | ||
bf362611 JB |
4458 | /* What about types defined as forward references inside of a small lexical |
4459 | scope? */ | |
4460 | /* Add a type to the list of undefined types to be checked through | |
4461 | once this file has been read in. | |
4462 | ||
4463 | In practice, we actually maintain two such lists: The first list | |
4464 | (UNDEF_TYPES) is used for types whose name has been provided, and | |
4465 | concerns forward references (eg 'xs' or 'xu' forward references); | |
4466 | the second list (NONAME_UNDEFS) is used for types whose name is | |
4467 | unknown at creation time, because they were referenced through | |
4468 | their type number before the actual type was declared. | |
4469 | This function actually adds the given type to the proper list. */ | |
4470 | ||
4471 | static void | |
4472 | add_undefined_type (struct type *type, int typenums[2]) | |
4473 | { | |
4474 | if (TYPE_TAG_NAME (type) == NULL) | |
4475 | add_undefined_type_noname (type, typenums); | |
4476 | else | |
4477 | add_undefined_type_1 (type); | |
4478 | } | |
4479 | ||
4480 | /* Try to fix all undefined types pushed on the UNDEF_TYPES vector. */ | |
4481 | ||
2c0b251b | 4482 | static void |
46bf5051 | 4483 | cleanup_undefined_types_noname (struct objfile *objfile) |
bf362611 JB |
4484 | { |
4485 | int i; | |
4486 | ||
4487 | for (i = 0; i < noname_undefs_length; i++) | |
4488 | { | |
4489 | struct nat nat = noname_undefs[i]; | |
4490 | struct type **type; | |
4491 | ||
46bf5051 | 4492 | type = dbx_lookup_type (nat.typenums, objfile); |
bf362611 | 4493 | if (nat.type != *type && TYPE_CODE (*type) != TYPE_CODE_UNDEF) |
56953f80 JB |
4494 | { |
4495 | /* The instance flags of the undefined type are still unset, | |
4496 | and needs to be copied over from the reference type. | |
4497 | Since replace_type expects them to be identical, we need | |
4498 | to set these flags manually before hand. */ | |
4499 | TYPE_INSTANCE_FLAGS (nat.type) = TYPE_INSTANCE_FLAGS (*type); | |
4500 | replace_type (nat.type, *type); | |
4501 | } | |
bf362611 JB |
4502 | } |
4503 | ||
4504 | noname_undefs_length = 0; | |
4505 | } | |
4506 | ||
c906108c SS |
4507 | /* Go through each undefined type, see if it's still undefined, and fix it |
4508 | up if possible. We have two kinds of undefined types: | |
4509 | ||
4510 | TYPE_CODE_ARRAY: Array whose target type wasn't defined yet. | |
c5aa993b JM |
4511 | Fix: update array length using the element bounds |
4512 | and the target type's length. | |
c906108c | 4513 | TYPE_CODE_STRUCT, TYPE_CODE_UNION: Structure whose fields were not |
c5aa993b JM |
4514 | yet defined at the time a pointer to it was made. |
4515 | Fix: Do a full lookup on the struct/union tag. */ | |
bf362611 | 4516 | |
2c0b251b | 4517 | static void |
bf362611 | 4518 | cleanup_undefined_types_1 (void) |
c906108c SS |
4519 | { |
4520 | struct type **type; | |
4521 | ||
9e386756 JB |
4522 | /* Iterate over every undefined type, and look for a symbol whose type |
4523 | matches our undefined type. The symbol matches if: | |
4524 | 1. It is a typedef in the STRUCT domain; | |
4525 | 2. It has the same name, and same type code; | |
4526 | 3. The instance flags are identical. | |
4527 | ||
4528 | It is important to check the instance flags, because we have seen | |
4529 | examples where the debug info contained definitions such as: | |
4530 | ||
4531 | "foo_t:t30=B31=xefoo_t:" | |
4532 | ||
4533 | In this case, we have created an undefined type named "foo_t" whose | |
4534 | instance flags is null (when processing "xefoo_t"), and then created | |
4535 | another type with the same name, but with different instance flags | |
4536 | ('B' means volatile). I think that the definition above is wrong, | |
4537 | since the same type cannot be volatile and non-volatile at the same | |
4538 | time, but we need to be able to cope with it when it happens. The | |
4539 | approach taken here is to treat these two types as different. */ | |
4540 | ||
c906108c SS |
4541 | for (type = undef_types; type < undef_types + undef_types_length; type++) |
4542 | { | |
4543 | switch (TYPE_CODE (*type)) | |
4544 | { | |
4545 | ||
c5aa993b JM |
4546 | case TYPE_CODE_STRUCT: |
4547 | case TYPE_CODE_UNION: | |
4548 | case TYPE_CODE_ENUM: | |
c906108c SS |
4549 | { |
4550 | /* Check if it has been defined since. Need to do this here | |
4551 | as well as in check_typedef to deal with the (legitimate in | |
4552 | C though not C++) case of several types with the same name | |
4553 | in different source files. */ | |
74a9bb82 | 4554 | if (TYPE_STUB (*type)) |
c906108c SS |
4555 | { |
4556 | struct pending *ppt; | |
4557 | int i; | |
c378eb4e | 4558 | /* Name of the type, without "struct" or "union". */ |
fe978cb0 | 4559 | const char *type_name = TYPE_TAG_NAME (*type); |
c906108c | 4560 | |
fe978cb0 | 4561 | if (type_name == NULL) |
c906108c | 4562 | { |
e2e0b3e5 | 4563 | complaint (&symfile_complaints, _("need a type name")); |
c906108c SS |
4564 | break; |
4565 | } | |
4566 | for (ppt = file_symbols; ppt; ppt = ppt->next) | |
4567 | { | |
4568 | for (i = 0; i < ppt->nsyms; i++) | |
4569 | { | |
4570 | struct symbol *sym = ppt->symbol[i]; | |
c5aa993b | 4571 | |
c906108c | 4572 | if (SYMBOL_CLASS (sym) == LOC_TYPEDEF |
176620f1 | 4573 | && SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN |
c906108c SS |
4574 | && (TYPE_CODE (SYMBOL_TYPE (sym)) == |
4575 | TYPE_CODE (*type)) | |
9e386756 JB |
4576 | && (TYPE_INSTANCE_FLAGS (*type) == |
4577 | TYPE_INSTANCE_FLAGS (SYMBOL_TYPE (sym))) | |
3567439c | 4578 | && strcmp (SYMBOL_LINKAGE_NAME (sym), |
fe978cb0 | 4579 | type_name) == 0) |
13a393b0 | 4580 | replace_type (*type, SYMBOL_TYPE (sym)); |
c906108c SS |
4581 | } |
4582 | } | |
4583 | } | |
4584 | } | |
4585 | break; | |
4586 | ||
4587 | default: | |
4588 | { | |
23136709 | 4589 | complaint (&symfile_complaints, |
e2e0b3e5 AC |
4590 | _("forward-referenced types left unresolved, " |
4591 | "type code %d."), | |
23136709 | 4592 | TYPE_CODE (*type)); |
c906108c SS |
4593 | } |
4594 | break; | |
4595 | } | |
4596 | } | |
4597 | ||
4598 | undef_types_length = 0; | |
4599 | } | |
4600 | ||
bf362611 JB |
4601 | /* Try to fix all the undefined types we ecountered while processing |
4602 | this unit. */ | |
4603 | ||
4604 | void | |
0a0edcd5 | 4605 | cleanup_undefined_stabs_types (struct objfile *objfile) |
bf362611 JB |
4606 | { |
4607 | cleanup_undefined_types_1 (); | |
46bf5051 | 4608 | cleanup_undefined_types_noname (objfile); |
bf362611 JB |
4609 | } |
4610 | ||
c906108c SS |
4611 | /* Scan through all of the global symbols defined in the object file, |
4612 | assigning values to the debugging symbols that need to be assigned | |
4613 | to. Get these symbols from the minimal symbol table. */ | |
4614 | ||
4615 | void | |
fba45db2 | 4616 | scan_file_globals (struct objfile *objfile) |
c906108c SS |
4617 | { |
4618 | int hash; | |
4619 | struct minimal_symbol *msymbol; | |
507836c0 | 4620 | struct symbol *sym, *prev; |
c906108c SS |
4621 | struct objfile *resolve_objfile; |
4622 | ||
4623 | /* SVR4 based linkers copy referenced global symbols from shared | |
4624 | libraries to the main executable. | |
4625 | If we are scanning the symbols for a shared library, try to resolve | |
4626 | them from the minimal symbols of the main executable first. */ | |
4627 | ||
4628 | if (symfile_objfile && objfile != symfile_objfile) | |
4629 | resolve_objfile = symfile_objfile; | |
4630 | else | |
4631 | resolve_objfile = objfile; | |
4632 | ||
4633 | while (1) | |
4634 | { | |
4635 | /* Avoid expensive loop through all minimal symbols if there are | |
c5aa993b | 4636 | no unresolved symbols. */ |
c906108c SS |
4637 | for (hash = 0; hash < HASHSIZE; hash++) |
4638 | { | |
4639 | if (global_sym_chain[hash]) | |
4640 | break; | |
4641 | } | |
4642 | if (hash >= HASHSIZE) | |
4643 | return; | |
4644 | ||
3567439c | 4645 | ALL_OBJFILE_MSYMBOLS (resolve_objfile, msymbol) |
c906108c SS |
4646 | { |
4647 | QUIT; | |
4648 | ||
4649 | /* Skip static symbols. */ | |
4650 | switch (MSYMBOL_TYPE (msymbol)) | |
4651 | { | |
4652 | case mst_file_text: | |
4653 | case mst_file_data: | |
4654 | case mst_file_bss: | |
4655 | continue; | |
4656 | default: | |
4657 | break; | |
4658 | } | |
4659 | ||
4660 | prev = NULL; | |
4661 | ||
4662 | /* Get the hash index and check all the symbols | |
c378eb4e | 4663 | under that hash index. */ |
c906108c | 4664 | |
efd66ac6 | 4665 | hash = hashname (MSYMBOL_LINKAGE_NAME (msymbol)); |
c906108c SS |
4666 | |
4667 | for (sym = global_sym_chain[hash]; sym;) | |
4668 | { | |
efd66ac6 | 4669 | if (strcmp (MSYMBOL_LINKAGE_NAME (msymbol), |
3567439c | 4670 | SYMBOL_LINKAGE_NAME (sym)) == 0) |
c906108c | 4671 | { |
c906108c | 4672 | /* Splice this symbol out of the hash chain and |
c378eb4e | 4673 | assign the value we have to it. */ |
c906108c SS |
4674 | if (prev) |
4675 | { | |
4676 | SYMBOL_VALUE_CHAIN (prev) = SYMBOL_VALUE_CHAIN (sym); | |
4677 | } | |
4678 | else | |
4679 | { | |
4680 | global_sym_chain[hash] = SYMBOL_VALUE_CHAIN (sym); | |
4681 | } | |
c5aa993b | 4682 | |
c906108c SS |
4683 | /* Check to see whether we need to fix up a common block. */ |
4684 | /* Note: this code might be executed several times for | |
4685 | the same symbol if there are multiple references. */ | |
507836c0 | 4686 | if (sym) |
c906108c | 4687 | { |
507836c0 | 4688 | if (SYMBOL_CLASS (sym) == LOC_BLOCK) |
c906108c | 4689 | { |
507836c0 | 4690 | fix_common_block (sym, |
77e371c0 TT |
4691 | MSYMBOL_VALUE_ADDRESS (resolve_objfile, |
4692 | msymbol)); | |
c906108c SS |
4693 | } |
4694 | else | |
4695 | { | |
507836c0 | 4696 | SYMBOL_VALUE_ADDRESS (sym) |
77e371c0 | 4697 | = MSYMBOL_VALUE_ADDRESS (resolve_objfile, msymbol); |
c906108c | 4698 | } |
efd66ac6 | 4699 | SYMBOL_SECTION (sym) = MSYMBOL_SECTION (msymbol); |
c906108c SS |
4700 | } |
4701 | ||
c906108c SS |
4702 | if (prev) |
4703 | { | |
4704 | sym = SYMBOL_VALUE_CHAIN (prev); | |
4705 | } | |
4706 | else | |
4707 | { | |
4708 | sym = global_sym_chain[hash]; | |
4709 | } | |
4710 | } | |
4711 | else | |
4712 | { | |
4713 | prev = sym; | |
4714 | sym = SYMBOL_VALUE_CHAIN (sym); | |
4715 | } | |
4716 | } | |
4717 | } | |
4718 | if (resolve_objfile == objfile) | |
4719 | break; | |
4720 | resolve_objfile = objfile; | |
4721 | } | |
4722 | ||
4723 | /* Change the storage class of any remaining unresolved globals to | |
4724 | LOC_UNRESOLVED and remove them from the chain. */ | |
4725 | for (hash = 0; hash < HASHSIZE; hash++) | |
4726 | { | |
4727 | sym = global_sym_chain[hash]; | |
4728 | while (sym) | |
4729 | { | |
4730 | prev = sym; | |
4731 | sym = SYMBOL_VALUE_CHAIN (sym); | |
4732 | ||
4733 | /* Change the symbol address from the misleading chain value | |
4734 | to address zero. */ | |
4735 | SYMBOL_VALUE_ADDRESS (prev) = 0; | |
4736 | ||
4737 | /* Complain about unresolved common block symbols. */ | |
4738 | if (SYMBOL_CLASS (prev) == LOC_STATIC) | |
f1e6e072 | 4739 | SYMBOL_ACLASS_INDEX (prev) = LOC_UNRESOLVED; |
c906108c | 4740 | else |
23136709 | 4741 | complaint (&symfile_complaints, |
3e43a32a MS |
4742 | _("%s: common block `%s' from " |
4743 | "global_sym_chain unresolved"), | |
4262abfb | 4744 | objfile_name (objfile), SYMBOL_PRINT_NAME (prev)); |
c906108c SS |
4745 | } |
4746 | } | |
4747 | memset (global_sym_chain, 0, sizeof (global_sym_chain)); | |
4748 | } | |
4749 | ||
4750 | /* Initialize anything that needs initializing when starting to read | |
4751 | a fresh piece of a symbol file, e.g. reading in the stuff corresponding | |
4752 | to a psymtab. */ | |
4753 | ||
4754 | void | |
fba45db2 | 4755 | stabsread_init (void) |
c906108c SS |
4756 | { |
4757 | } | |
4758 | ||
4759 | /* Initialize anything that needs initializing when a completely new | |
4760 | symbol file is specified (not just adding some symbols from another | |
4761 | file, e.g. a shared library). */ | |
4762 | ||
4763 | void | |
fba45db2 | 4764 | stabsread_new_init (void) |
c906108c SS |
4765 | { |
4766 | /* Empty the hash table of global syms looking for values. */ | |
4767 | memset (global_sym_chain, 0, sizeof (global_sym_chain)); | |
4768 | } | |
4769 | ||
4770 | /* Initialize anything that needs initializing at the same time as | |
c378eb4e | 4771 | start_symtab() is called. */ |
c906108c | 4772 | |
c5aa993b | 4773 | void |
fba45db2 | 4774 | start_stabs (void) |
c906108c SS |
4775 | { |
4776 | global_stabs = NULL; /* AIX COFF */ | |
4777 | /* Leave FILENUM of 0 free for builtin types and this file's types. */ | |
4778 | n_this_object_header_files = 1; | |
4779 | type_vector_length = 0; | |
4780 | type_vector = (struct type **) 0; | |
4781 | ||
4782 | /* FIXME: If common_block_name is not already NULL, we should complain(). */ | |
4783 | common_block_name = NULL; | |
c906108c SS |
4784 | } |
4785 | ||
c378eb4e | 4786 | /* Call after end_symtab(). */ |
c906108c | 4787 | |
c5aa993b | 4788 | void |
fba45db2 | 4789 | end_stabs (void) |
c906108c SS |
4790 | { |
4791 | if (type_vector) | |
4792 | { | |
b8c9b27d | 4793 | xfree (type_vector); |
c906108c SS |
4794 | } |
4795 | type_vector = 0; | |
4796 | type_vector_length = 0; | |
4797 | previous_stab_code = 0; | |
4798 | } | |
4799 | ||
4800 | void | |
fba45db2 | 4801 | finish_global_stabs (struct objfile *objfile) |
c906108c SS |
4802 | { |
4803 | if (global_stabs) | |
4804 | { | |
4805 | patch_block_stabs (global_symbols, global_stabs, objfile); | |
b8c9b27d | 4806 | xfree (global_stabs); |
c906108c SS |
4807 | global_stabs = NULL; |
4808 | } | |
4809 | } | |
4810 | ||
7e1d63ec AF |
4811 | /* Find the end of the name, delimited by a ':', but don't match |
4812 | ObjC symbols which look like -[Foo bar::]:bla. */ | |
4813 | static char * | |
4814 | find_name_end (char *name) | |
4815 | { | |
4816 | char *s = name; | |
433759f7 | 4817 | |
7e1d63ec AF |
4818 | if (s[0] == '-' || *s == '+') |
4819 | { | |
4820 | /* Must be an ObjC method symbol. */ | |
4821 | if (s[1] != '[') | |
4822 | { | |
8a3fe4f8 | 4823 | error (_("invalid symbol name \"%s\""), name); |
7e1d63ec AF |
4824 | } |
4825 | s = strchr (s, ']'); | |
4826 | if (s == NULL) | |
4827 | { | |
8a3fe4f8 | 4828 | error (_("invalid symbol name \"%s\""), name); |
7e1d63ec AF |
4829 | } |
4830 | return strchr (s, ':'); | |
4831 | } | |
4832 | else | |
4833 | { | |
4834 | return strchr (s, ':'); | |
4835 | } | |
4836 | } | |
4837 | ||
c378eb4e | 4838 | /* Initializer for this module. */ |
c906108c SS |
4839 | |
4840 | void | |
fba45db2 | 4841 | _initialize_stabsread (void) |
c906108c | 4842 | { |
46bf5051 UW |
4843 | rs6000_builtin_type_data = register_objfile_data (); |
4844 | ||
c906108c SS |
4845 | undef_types_allocated = 20; |
4846 | undef_types_length = 0; | |
4847 | undef_types = (struct type **) | |
4848 | xmalloc (undef_types_allocated * sizeof (struct type *)); | |
bf362611 JB |
4849 | |
4850 | noname_undefs_allocated = 20; | |
4851 | noname_undefs_length = 0; | |
4852 | noname_undefs = (struct nat *) | |
4853 | xmalloc (noname_undefs_allocated * sizeof (struct nat)); | |
f1e6e072 TT |
4854 | |
4855 | stab_register_index = register_symbol_register_impl (LOC_REGISTER, | |
4856 | &stab_register_funcs); | |
4857 | stab_regparm_index = register_symbol_register_impl (LOC_REGPARM_ADDR, | |
4858 | &stab_register_funcs); | |
c906108c | 4859 | } |