Commit | Line | Data |
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c906108c | 1 | /* Support routines for decoding "stabs" debugging information format. |
cf5b2f1b | 2 | |
ecd75fc8 | 3 | Copyright (C) 1986-2014 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" | |
0e9f083f | 27 | #include <string.h> |
c906108c | 28 | #include "bfd.h" |
04ea0df1 | 29 | #include "gdb_obstack.h" |
c906108c SS |
30 | #include "symtab.h" |
31 | #include "gdbtypes.h" | |
32 | #include "expression.h" | |
33 | #include "symfile.h" | |
34 | #include "objfiles.h" | |
3e43a32a | 35 | #include "aout/stab_gnu.h" /* We always use GNU stabs, not native. */ |
c906108c SS |
36 | #include "libaout.h" |
37 | #include "aout/aout64.h" | |
38 | #include "gdb-stabs.h" | |
39 | #include "buildsym.h" | |
40 | #include "complaints.h" | |
41 | #include "demangle.h" | |
50f182aa | 42 | #include "gdb-demangle.h" |
c906108c | 43 | #include "language.h" |
d16aafd8 | 44 | #include "doublest.h" |
de17c821 DJ |
45 | #include "cp-abi.h" |
46 | #include "cp-support.h" | |
c906108c SS |
47 | #include <ctype.h> |
48 | ||
49 | /* Ask stabsread.h to define the vars it normally declares `extern'. */ | |
c5aa993b JM |
50 | #define EXTERN |
51 | /**/ | |
c906108c SS |
52 | #include "stabsread.h" /* Our own declarations */ |
53 | #undef EXTERN | |
54 | ||
a14ed312 | 55 | extern void _initialize_stabsread (void); |
392a587b | 56 | |
c906108c SS |
57 | /* The routines that read and process a complete stabs for a C struct or |
58 | C++ class pass lists of data member fields and lists of member function | |
59 | fields in an instance of a field_info structure, as defined below. | |
60 | This is part of some reorganization of low level C++ support and is | |
c378eb4e | 61 | expected to eventually go away... (FIXME) */ |
c906108c SS |
62 | |
63 | struct field_info | |
c5aa993b JM |
64 | { |
65 | struct nextfield | |
66 | { | |
67 | struct nextfield *next; | |
c906108c | 68 | |
c5aa993b JM |
69 | /* This is the raw visibility from the stab. It is not checked |
70 | for being one of the visibilities we recognize, so code which | |
71 | examines this field better be able to deal. */ | |
72 | int visibility; | |
c906108c | 73 | |
c5aa993b JM |
74 | struct field field; |
75 | } | |
76 | *list; | |
77 | struct next_fnfieldlist | |
78 | { | |
79 | struct next_fnfieldlist *next; | |
80 | struct fn_fieldlist fn_fieldlist; | |
81 | } | |
82 | *fnlist; | |
83 | }; | |
c906108c SS |
84 | |
85 | static void | |
a14ed312 KB |
86 | read_one_struct_field (struct field_info *, char **, char *, |
87 | struct type *, struct objfile *); | |
c906108c | 88 | |
a14ed312 | 89 | static struct type *dbx_alloc_type (int[2], struct objfile *); |
c906108c | 90 | |
94e10a22 | 91 | static long read_huge_number (char **, int, int *, int); |
c906108c | 92 | |
a14ed312 | 93 | static struct type *error_type (char **, struct objfile *); |
c906108c SS |
94 | |
95 | static void | |
a14ed312 KB |
96 | patch_block_stabs (struct pending *, struct pending_stabs *, |
97 | struct objfile *); | |
c906108c | 98 | |
46cb6474 | 99 | static void fix_common_block (struct symbol *, CORE_ADDR); |
c906108c | 100 | |
a14ed312 | 101 | static int read_type_number (char **, int *); |
c906108c | 102 | |
a7a48797 EZ |
103 | static struct type *read_type (char **, struct objfile *); |
104 | ||
94e10a22 | 105 | static struct type *read_range_type (char **, int[2], int, struct objfile *); |
c906108c | 106 | |
a14ed312 | 107 | static struct type *read_sun_builtin_type (char **, int[2], struct objfile *); |
c906108c | 108 | |
a14ed312 KB |
109 | static struct type *read_sun_floating_type (char **, int[2], |
110 | struct objfile *); | |
c906108c | 111 | |
a14ed312 | 112 | static struct type *read_enum_type (char **, struct type *, struct objfile *); |
c906108c | 113 | |
46bf5051 | 114 | static struct type *rs6000_builtin_type (int, struct objfile *); |
c906108c SS |
115 | |
116 | static int | |
a14ed312 KB |
117 | read_member_functions (struct field_info *, char **, struct type *, |
118 | struct objfile *); | |
c906108c SS |
119 | |
120 | static int | |
a14ed312 KB |
121 | read_struct_fields (struct field_info *, char **, struct type *, |
122 | struct objfile *); | |
c906108c SS |
123 | |
124 | static int | |
a14ed312 KB |
125 | read_baseclasses (struct field_info *, char **, struct type *, |
126 | struct objfile *); | |
c906108c SS |
127 | |
128 | static int | |
a14ed312 KB |
129 | read_tilde_fields (struct field_info *, char **, struct type *, |
130 | struct objfile *); | |
c906108c | 131 | |
a14ed312 | 132 | static int attach_fn_fields_to_type (struct field_info *, struct type *); |
c906108c | 133 | |
570b8f7c AC |
134 | static int attach_fields_to_type (struct field_info *, struct type *, |
135 | struct objfile *); | |
c906108c | 136 | |
a14ed312 | 137 | static struct type *read_struct_type (char **, struct type *, |
2ae1c2d2 | 138 | enum type_code, |
a14ed312 | 139 | struct objfile *); |
c906108c | 140 | |
a14ed312 KB |
141 | static struct type *read_array_type (char **, struct type *, |
142 | struct objfile *); | |
c906108c | 143 | |
ad2f7632 | 144 | static struct field *read_args (char **, int, struct objfile *, int *, int *); |
c906108c | 145 | |
bf362611 | 146 | static void add_undefined_type (struct type *, int[2]); |
a7a48797 | 147 | |
c906108c | 148 | static int |
a14ed312 KB |
149 | read_cpp_abbrev (struct field_info *, char **, struct type *, |
150 | struct objfile *); | |
c906108c | 151 | |
7e1d63ec AF |
152 | static char *find_name_end (char *name); |
153 | ||
a14ed312 | 154 | static int process_reference (char **string); |
c906108c | 155 | |
a14ed312 | 156 | void stabsread_clear_cache (void); |
7be570e7 | 157 | |
8343f86c DJ |
158 | static const char vptr_name[] = "_vptr$"; |
159 | static const char vb_name[] = "_vb$"; | |
c906108c | 160 | |
23136709 KB |
161 | static void |
162 | invalid_cpp_abbrev_complaint (const char *arg1) | |
163 | { | |
e2e0b3e5 | 164 | complaint (&symfile_complaints, _("invalid C++ abbreviation `%s'"), arg1); |
23136709 | 165 | } |
c906108c | 166 | |
23136709 | 167 | static void |
49b0b195 | 168 | reg_value_complaint (int regnum, int num_regs, const char *sym) |
23136709 KB |
169 | { |
170 | complaint (&symfile_complaints, | |
e2e0b3e5 | 171 | _("register number %d too large (max %d) in symbol %s"), |
49b0b195 | 172 | regnum, num_regs - 1, sym); |
23136709 | 173 | } |
c906108c | 174 | |
23136709 KB |
175 | static void |
176 | stabs_general_complaint (const char *arg1) | |
177 | { | |
178 | complaint (&symfile_complaints, "%s", arg1); | |
179 | } | |
c906108c | 180 | |
c906108c SS |
181 | /* Make a list of forward references which haven't been defined. */ |
182 | ||
183 | static struct type **undef_types; | |
184 | static int undef_types_allocated; | |
185 | static int undef_types_length; | |
186 | static struct symbol *current_symbol = NULL; | |
187 | ||
bf362611 JB |
188 | /* Make a list of nameless types that are undefined. |
189 | This happens when another type is referenced by its number | |
c378eb4e | 190 | before this type is actually defined. For instance "t(0,1)=k(0,2)" |
bf362611 JB |
191 | and type (0,2) is defined only later. */ |
192 | ||
193 | struct nat | |
194 | { | |
195 | int typenums[2]; | |
196 | struct type *type; | |
197 | }; | |
198 | static struct nat *noname_undefs; | |
199 | static int noname_undefs_allocated; | |
200 | static int noname_undefs_length; | |
201 | ||
c906108c SS |
202 | /* Check for and handle cretinous stabs symbol name continuation! */ |
203 | #define STABS_CONTINUE(pp,objfile) \ | |
204 | do { \ | |
205 | if (**(pp) == '\\' || (**(pp) == '?' && (*(pp))[1] == '\0')) \ | |
206 | *(pp) = next_symbol_text (objfile); \ | |
207 | } while (0) | |
fc474241 DE |
208 | |
209 | /* Vector of types defined so far, indexed by their type numbers. | |
210 | (In newer sun systems, dbx uses a pair of numbers in parens, | |
211 | as in "(SUBFILENUM,NUMWITHINSUBFILE)". | |
212 | Then these numbers must be translated through the type_translations | |
213 | hash table to get the index into the type vector.) */ | |
214 | ||
215 | static struct type **type_vector; | |
216 | ||
217 | /* Number of elements allocated for type_vector currently. */ | |
218 | ||
219 | static int type_vector_length; | |
220 | ||
221 | /* Initial size of type vector. Is realloc'd larger if needed, and | |
222 | realloc'd down to the size actually used, when completed. */ | |
223 | ||
224 | #define INITIAL_TYPE_VECTOR_LENGTH 160 | |
c906108c | 225 | \f |
c906108c SS |
226 | |
227 | /* Look up a dbx type-number pair. Return the address of the slot | |
228 | where the type for that number-pair is stored. | |
229 | The number-pair is in TYPENUMS. | |
230 | ||
231 | This can be used for finding the type associated with that pair | |
232 | or for associating a new type with the pair. */ | |
233 | ||
a7a48797 | 234 | static struct type ** |
46bf5051 | 235 | dbx_lookup_type (int typenums[2], struct objfile *objfile) |
c906108c | 236 | { |
52f0bd74 AC |
237 | int filenum = typenums[0]; |
238 | int index = typenums[1]; | |
c906108c | 239 | unsigned old_len; |
52f0bd74 AC |
240 | int real_filenum; |
241 | struct header_file *f; | |
c906108c SS |
242 | int f_orig_length; |
243 | ||
244 | if (filenum == -1) /* -1,-1 is for temporary types. */ | |
245 | return 0; | |
246 | ||
247 | if (filenum < 0 || filenum >= n_this_object_header_files) | |
248 | { | |
23136709 | 249 | complaint (&symfile_complaints, |
3e43a32a MS |
250 | _("Invalid symbol data: type number " |
251 | "(%d,%d) out of range at symtab pos %d."), | |
23136709 | 252 | filenum, index, symnum); |
c906108c SS |
253 | goto error_return; |
254 | } | |
255 | ||
256 | if (filenum == 0) | |
257 | { | |
258 | if (index < 0) | |
259 | { | |
260 | /* Caller wants address of address of type. We think | |
261 | that negative (rs6k builtin) types will never appear as | |
262 | "lvalues", (nor should they), so we stuff the real type | |
263 | pointer into a temp, and return its address. If referenced, | |
264 | this will do the right thing. */ | |
265 | static struct type *temp_type; | |
266 | ||
46bf5051 | 267 | temp_type = rs6000_builtin_type (index, objfile); |
c906108c SS |
268 | return &temp_type; |
269 | } | |
270 | ||
271 | /* Type is defined outside of header files. | |
c5aa993b | 272 | Find it in this object file's type vector. */ |
c906108c SS |
273 | if (index >= type_vector_length) |
274 | { | |
275 | old_len = type_vector_length; | |
276 | if (old_len == 0) | |
277 | { | |
278 | type_vector_length = INITIAL_TYPE_VECTOR_LENGTH; | |
279 | type_vector = (struct type **) | |
280 | xmalloc (type_vector_length * sizeof (struct type *)); | |
281 | } | |
282 | while (index >= type_vector_length) | |
283 | { | |
284 | type_vector_length *= 2; | |
285 | } | |
286 | type_vector = (struct type **) | |
287 | xrealloc ((char *) type_vector, | |
288 | (type_vector_length * sizeof (struct type *))); | |
289 | memset (&type_vector[old_len], 0, | |
290 | (type_vector_length - old_len) * sizeof (struct type *)); | |
c906108c SS |
291 | } |
292 | return (&type_vector[index]); | |
293 | } | |
294 | else | |
295 | { | |
296 | real_filenum = this_object_header_files[filenum]; | |
297 | ||
46bf5051 | 298 | if (real_filenum >= N_HEADER_FILES (objfile)) |
c906108c | 299 | { |
46bf5051 | 300 | static struct type *temp_type; |
c906108c | 301 | |
8a3fe4f8 | 302 | warning (_("GDB internal error: bad real_filenum")); |
c906108c SS |
303 | |
304 | error_return: | |
46bf5051 UW |
305 | temp_type = objfile_type (objfile)->builtin_error; |
306 | return &temp_type; | |
c906108c SS |
307 | } |
308 | ||
46bf5051 | 309 | f = HEADER_FILES (objfile) + real_filenum; |
c906108c SS |
310 | |
311 | f_orig_length = f->length; | |
312 | if (index >= f_orig_length) | |
313 | { | |
314 | while (index >= f->length) | |
315 | { | |
316 | f->length *= 2; | |
317 | } | |
318 | f->vector = (struct type **) | |
319 | xrealloc ((char *) f->vector, f->length * sizeof (struct type *)); | |
320 | memset (&f->vector[f_orig_length], 0, | |
321 | (f->length - f_orig_length) * sizeof (struct type *)); | |
322 | } | |
323 | return (&f->vector[index]); | |
324 | } | |
325 | } | |
326 | ||
327 | /* Make sure there is a type allocated for type numbers TYPENUMS | |
328 | and return the type object. | |
329 | This can create an empty (zeroed) type object. | |
330 | TYPENUMS may be (-1, -1) to return a new type object that is not | |
c378eb4e | 331 | put into the type vector, and so may not be referred to by number. */ |
c906108c SS |
332 | |
333 | static struct type * | |
35a2f538 | 334 | dbx_alloc_type (int typenums[2], struct objfile *objfile) |
c906108c | 335 | { |
52f0bd74 | 336 | struct type **type_addr; |
c906108c SS |
337 | |
338 | if (typenums[0] == -1) | |
339 | { | |
340 | return (alloc_type (objfile)); | |
341 | } | |
342 | ||
46bf5051 | 343 | type_addr = dbx_lookup_type (typenums, objfile); |
c906108c SS |
344 | |
345 | /* If we are referring to a type not known at all yet, | |
346 | allocate an empty type for it. | |
347 | We will fill it in later if we find out how. */ | |
348 | if (*type_addr == 0) | |
349 | { | |
350 | *type_addr = alloc_type (objfile); | |
351 | } | |
352 | ||
353 | return (*type_addr); | |
354 | } | |
355 | ||
356 | /* for all the stabs in a given stab vector, build appropriate types | |
c378eb4e | 357 | and fix their symbols in given symbol vector. */ |
c906108c SS |
358 | |
359 | static void | |
fba45db2 KB |
360 | patch_block_stabs (struct pending *symbols, struct pending_stabs *stabs, |
361 | struct objfile *objfile) | |
c906108c SS |
362 | { |
363 | int ii; | |
364 | char *name; | |
365 | char *pp; | |
366 | struct symbol *sym; | |
367 | ||
368 | if (stabs) | |
369 | { | |
c906108c | 370 | /* for all the stab entries, find their corresponding symbols and |
c378eb4e | 371 | patch their types! */ |
c5aa993b | 372 | |
c906108c SS |
373 | for (ii = 0; ii < stabs->count; ++ii) |
374 | { | |
375 | name = stabs->stab[ii]; | |
c5aa993b | 376 | pp = (char *) strchr (name, ':'); |
8fb822e0 | 377 | gdb_assert (pp); /* Must find a ':' or game's over. */ |
c906108c SS |
378 | while (pp[1] == ':') |
379 | { | |
c5aa993b JM |
380 | pp += 2; |
381 | pp = (char *) strchr (pp, ':'); | |
c906108c | 382 | } |
c5aa993b | 383 | sym = find_symbol_in_list (symbols, name, pp - name); |
c906108c SS |
384 | if (!sym) |
385 | { | |
386 | /* FIXME-maybe: it would be nice if we noticed whether | |
c5aa993b JM |
387 | the variable was defined *anywhere*, not just whether |
388 | it is defined in this compilation unit. But neither | |
389 | xlc or GCC seem to need such a definition, and until | |
390 | we do psymtabs (so that the minimal symbols from all | |
391 | compilation units are available now), I'm not sure | |
392 | how to get the information. */ | |
c906108c SS |
393 | |
394 | /* On xcoff, if a global is defined and never referenced, | |
c5aa993b JM |
395 | ld will remove it from the executable. There is then |
396 | a N_GSYM stab for it, but no regular (C_EXT) symbol. */ | |
e623cf5d | 397 | sym = allocate_symbol (objfile); |
176620f1 | 398 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
f1e6e072 | 399 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
3567439c | 400 | SYMBOL_SET_LINKAGE_NAME |
10f0c4bb TT |
401 | (sym, obstack_copy0 (&objfile->objfile_obstack, |
402 | name, pp - name)); | |
c906108c | 403 | pp += 2; |
c5aa993b | 404 | if (*(pp - 1) == 'F' || *(pp - 1) == 'f') |
c906108c SS |
405 | { |
406 | /* I don't think the linker does this with functions, | |
407 | so as far as I know this is never executed. | |
408 | But it doesn't hurt to check. */ | |
409 | SYMBOL_TYPE (sym) = | |
410 | lookup_function_type (read_type (&pp, objfile)); | |
411 | } | |
412 | else | |
413 | { | |
414 | SYMBOL_TYPE (sym) = read_type (&pp, objfile); | |
415 | } | |
416 | add_symbol_to_list (sym, &global_symbols); | |
417 | } | |
418 | else | |
419 | { | |
420 | pp += 2; | |
c5aa993b | 421 | if (*(pp - 1) == 'F' || *(pp - 1) == 'f') |
c906108c SS |
422 | { |
423 | SYMBOL_TYPE (sym) = | |
424 | lookup_function_type (read_type (&pp, objfile)); | |
425 | } | |
426 | else | |
427 | { | |
428 | SYMBOL_TYPE (sym) = read_type (&pp, objfile); | |
429 | } | |
430 | } | |
431 | } | |
432 | } | |
433 | } | |
c906108c | 434 | \f |
c5aa993b | 435 | |
c906108c SS |
436 | /* Read a number by which a type is referred to in dbx data, |
437 | or perhaps read a pair (FILENUM, TYPENUM) in parentheses. | |
438 | Just a single number N is equivalent to (0,N). | |
439 | Return the two numbers by storing them in the vector TYPENUMS. | |
440 | TYPENUMS will then be used as an argument to dbx_lookup_type. | |
441 | ||
442 | Returns 0 for success, -1 for error. */ | |
443 | ||
444 | static int | |
aa1ee363 | 445 | read_type_number (char **pp, int *typenums) |
c906108c SS |
446 | { |
447 | int nbits; | |
433759f7 | 448 | |
c906108c SS |
449 | if (**pp == '(') |
450 | { | |
451 | (*pp)++; | |
94e10a22 | 452 | typenums[0] = read_huge_number (pp, ',', &nbits, 0); |
c5aa993b JM |
453 | if (nbits != 0) |
454 | return -1; | |
94e10a22 | 455 | typenums[1] = read_huge_number (pp, ')', &nbits, 0); |
c5aa993b JM |
456 | if (nbits != 0) |
457 | return -1; | |
c906108c SS |
458 | } |
459 | else | |
460 | { | |
461 | typenums[0] = 0; | |
94e10a22 | 462 | typenums[1] = read_huge_number (pp, 0, &nbits, 0); |
c5aa993b JM |
463 | if (nbits != 0) |
464 | return -1; | |
c906108c SS |
465 | } |
466 | return 0; | |
467 | } | |
c906108c | 468 | \f |
c5aa993b | 469 | |
c906108c SS |
470 | #define VISIBILITY_PRIVATE '0' /* Stabs character for private field */ |
471 | #define VISIBILITY_PROTECTED '1' /* Stabs character for protected fld */ | |
472 | #define VISIBILITY_PUBLIC '2' /* Stabs character for public field */ | |
473 | #define VISIBILITY_IGNORE '9' /* Optimized out or zero length */ | |
474 | ||
c906108c | 475 | /* Structure for storing pointers to reference definitions for fast lookup |
c378eb4e | 476 | during "process_later". */ |
c906108c SS |
477 | |
478 | struct ref_map | |
479 | { | |
480 | char *stabs; | |
481 | CORE_ADDR value; | |
482 | struct symbol *sym; | |
483 | }; | |
484 | ||
485 | #define MAX_CHUNK_REFS 100 | |
486 | #define REF_CHUNK_SIZE (MAX_CHUNK_REFS * sizeof (struct ref_map)) | |
487 | #define REF_MAP_SIZE(ref_chunk) ((ref_chunk) * REF_CHUNK_SIZE) | |
488 | ||
c5aa993b | 489 | static struct ref_map *ref_map; |
c906108c | 490 | |
c378eb4e | 491 | /* Ptr to free cell in chunk's linked list. */ |
c5aa993b | 492 | static int ref_count = 0; |
c906108c | 493 | |
c378eb4e | 494 | /* Number of chunks malloced. */ |
c906108c SS |
495 | static int ref_chunk = 0; |
496 | ||
7be570e7 | 497 | /* This file maintains a cache of stabs aliases found in the symbol |
c378eb4e MS |
498 | table. If the symbol table changes, this cache must be cleared |
499 | or we are left holding onto data in invalid obstacks. */ | |
7be570e7 | 500 | void |
fba45db2 | 501 | stabsread_clear_cache (void) |
7be570e7 JM |
502 | { |
503 | ref_count = 0; | |
504 | ref_chunk = 0; | |
505 | } | |
506 | ||
c906108c SS |
507 | /* Create array of pointers mapping refids to symbols and stab strings. |
508 | Add pointers to reference definition symbols and/or their values as we | |
c378eb4e MS |
509 | find them, using their reference numbers as our index. |
510 | These will be used later when we resolve references. */ | |
c906108c | 511 | void |
fba45db2 | 512 | ref_add (int refnum, struct symbol *sym, char *stabs, CORE_ADDR value) |
c906108c SS |
513 | { |
514 | if (ref_count == 0) | |
515 | ref_chunk = 0; | |
516 | if (refnum >= ref_count) | |
517 | ref_count = refnum + 1; | |
518 | if (ref_count > ref_chunk * MAX_CHUNK_REFS) | |
519 | { | |
c5aa993b | 520 | int new_slots = ref_count - ref_chunk * MAX_CHUNK_REFS; |
c906108c | 521 | int new_chunks = new_slots / MAX_CHUNK_REFS + 1; |
433759f7 | 522 | |
c906108c SS |
523 | ref_map = (struct ref_map *) |
524 | xrealloc (ref_map, REF_MAP_SIZE (ref_chunk + new_chunks)); | |
433759f7 MS |
525 | memset (ref_map + ref_chunk * MAX_CHUNK_REFS, 0, |
526 | new_chunks * REF_CHUNK_SIZE); | |
c906108c SS |
527 | ref_chunk += new_chunks; |
528 | } | |
529 | ref_map[refnum].stabs = stabs; | |
530 | ref_map[refnum].sym = sym; | |
531 | ref_map[refnum].value = value; | |
532 | } | |
533 | ||
534 | /* Return defined sym for the reference REFNUM. */ | |
535 | struct symbol * | |
fba45db2 | 536 | ref_search (int refnum) |
c906108c SS |
537 | { |
538 | if (refnum < 0 || refnum > ref_count) | |
539 | return 0; | |
540 | return ref_map[refnum].sym; | |
541 | } | |
542 | ||
c906108c SS |
543 | /* Parse a reference id in STRING and return the resulting |
544 | reference number. Move STRING beyond the reference id. */ | |
545 | ||
c5aa993b | 546 | static int |
fba45db2 | 547 | process_reference (char **string) |
c906108c SS |
548 | { |
549 | char *p; | |
550 | int refnum = 0; | |
551 | ||
c5aa993b JM |
552 | if (**string != '#') |
553 | return 0; | |
554 | ||
c906108c SS |
555 | /* Advance beyond the initial '#'. */ |
556 | p = *string + 1; | |
557 | ||
c378eb4e | 558 | /* Read number as reference id. */ |
c906108c SS |
559 | while (*p && isdigit (*p)) |
560 | { | |
561 | refnum = refnum * 10 + *p - '0'; | |
562 | p++; | |
563 | } | |
564 | *string = p; | |
565 | return refnum; | |
566 | } | |
567 | ||
568 | /* If STRING defines a reference, store away a pointer to the reference | |
569 | definition for later use. Return the reference number. */ | |
570 | ||
571 | int | |
fba45db2 | 572 | symbol_reference_defined (char **string) |
c906108c SS |
573 | { |
574 | char *p = *string; | |
575 | int refnum = 0; | |
576 | ||
577 | refnum = process_reference (&p); | |
578 | ||
c378eb4e | 579 | /* Defining symbols end in '='. */ |
c5aa993b | 580 | if (*p == '=') |
c906108c | 581 | { |
c378eb4e | 582 | /* Symbol is being defined here. */ |
c906108c SS |
583 | *string = p + 1; |
584 | return refnum; | |
585 | } | |
586 | else | |
587 | { | |
c378eb4e | 588 | /* Must be a reference. Either the symbol has already been defined, |
c906108c SS |
589 | or this is a forward reference to it. */ |
590 | *string = p; | |
591 | return -1; | |
592 | } | |
593 | } | |
594 | ||
768a979c UW |
595 | static int |
596 | stab_reg_to_regnum (struct symbol *sym, struct gdbarch *gdbarch) | |
597 | { | |
598 | int regno = gdbarch_stab_reg_to_regnum (gdbarch, SYMBOL_VALUE (sym)); | |
599 | ||
600 | if (regno >= gdbarch_num_regs (gdbarch) | |
601 | + gdbarch_num_pseudo_regs (gdbarch)) | |
602 | { | |
603 | reg_value_complaint (regno, | |
604 | gdbarch_num_regs (gdbarch) | |
605 | + gdbarch_num_pseudo_regs (gdbarch), | |
606 | SYMBOL_PRINT_NAME (sym)); | |
607 | ||
c378eb4e | 608 | regno = gdbarch_sp_regnum (gdbarch); /* Known safe, though useless. */ |
768a979c UW |
609 | } |
610 | ||
611 | return regno; | |
612 | } | |
613 | ||
614 | static const struct symbol_register_ops stab_register_funcs = { | |
615 | stab_reg_to_regnum | |
616 | }; | |
617 | ||
f1e6e072 TT |
618 | /* The "aclass" indices for computed symbols. */ |
619 | ||
620 | static int stab_register_index; | |
621 | static int stab_regparm_index; | |
622 | ||
c906108c | 623 | struct symbol * |
fba45db2 KB |
624 | define_symbol (CORE_ADDR valu, char *string, int desc, int type, |
625 | struct objfile *objfile) | |
c906108c | 626 | { |
5e2b427d | 627 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
52f0bd74 | 628 | struct symbol *sym; |
7e1d63ec | 629 | char *p = (char *) find_name_end (string); |
c906108c SS |
630 | int deftype; |
631 | int synonym = 0; | |
52f0bd74 | 632 | int i; |
71c25dea | 633 | char *new_name = NULL; |
c906108c SS |
634 | |
635 | /* We would like to eliminate nameless symbols, but keep their types. | |
636 | E.g. stab entry ":t10=*2" should produce a type 10, which is a pointer | |
c378eb4e MS |
637 | to type 2, but, should not create a symbol to address that type. Since |
638 | the symbol will be nameless, there is no way any user can refer to it. */ | |
c906108c SS |
639 | |
640 | int nameless; | |
641 | ||
642 | /* Ignore syms with empty names. */ | |
643 | if (string[0] == 0) | |
644 | return 0; | |
645 | ||
c378eb4e | 646 | /* Ignore old-style symbols from cc -go. */ |
c906108c SS |
647 | if (p == 0) |
648 | return 0; | |
649 | ||
650 | while (p[1] == ':') | |
651 | { | |
c5aa993b JM |
652 | p += 2; |
653 | p = strchr (p, ':'); | |
681c238c MS |
654 | if (p == NULL) |
655 | { | |
656 | complaint (&symfile_complaints, | |
657 | _("Bad stabs string '%s'"), string); | |
658 | return NULL; | |
659 | } | |
c906108c SS |
660 | } |
661 | ||
662 | /* If a nameless stab entry, all we need is the type, not the symbol. | |
663 | e.g. ":t10=*2" or a nameless enum like " :T16=ered:0,green:1,blue:2,;" */ | |
664 | nameless = (p == string || ((string[0] == ' ') && (string[1] == ':'))); | |
665 | ||
e623cf5d | 666 | current_symbol = sym = allocate_symbol (objfile); |
c906108c | 667 | |
c906108c SS |
668 | if (processing_gcc_compilation) |
669 | { | |
670 | /* GCC 2.x puts the line number in desc. SunOS apparently puts in the | |
c5aa993b JM |
671 | number of bytes occupied by a type or object, which we ignore. */ |
672 | SYMBOL_LINE (sym) = desc; | |
c906108c SS |
673 | } |
674 | else | |
675 | { | |
c5aa993b | 676 | SYMBOL_LINE (sym) = 0; /* unknown */ |
c906108c SS |
677 | } |
678 | ||
679 | if (is_cplus_marker (string[0])) | |
680 | { | |
681 | /* Special GNU C++ names. */ | |
682 | switch (string[1]) | |
683 | { | |
c5aa993b | 684 | case 't': |
1c9e8358 | 685 | SYMBOL_SET_LINKAGE_NAME (sym, "this"); |
c5aa993b | 686 | break; |
c906108c | 687 | |
c5aa993b | 688 | case 'v': /* $vtbl_ptr_type */ |
c5aa993b | 689 | goto normal; |
c906108c | 690 | |
c5aa993b | 691 | case 'e': |
1c9e8358 | 692 | SYMBOL_SET_LINKAGE_NAME (sym, "eh_throw"); |
c5aa993b | 693 | break; |
c906108c | 694 | |
c5aa993b JM |
695 | case '_': |
696 | /* This was an anonymous type that was never fixed up. */ | |
697 | goto normal; | |
c906108c | 698 | |
c5aa993b JM |
699 | case 'X': |
700 | /* SunPRO (3.0 at least) static variable encoding. */ | |
5e2b427d | 701 | if (gdbarch_static_transform_name_p (gdbarch)) |
149ad273 | 702 | goto normal; |
c378eb4e | 703 | /* ... fall through ... */ |
c906108c | 704 | |
c5aa993b | 705 | default: |
e2e0b3e5 | 706 | complaint (&symfile_complaints, _("Unknown C++ symbol name `%s'"), |
23136709 | 707 | string); |
c378eb4e | 708 | goto normal; /* Do *something* with it. */ |
c906108c SS |
709 | } |
710 | } | |
c906108c SS |
711 | else |
712 | { | |
713 | normal: | |
f85f34ed TT |
714 | SYMBOL_SET_LANGUAGE (sym, current_subfile->language, |
715 | &objfile->objfile_obstack); | |
df8a16a1 | 716 | if (SYMBOL_LANGUAGE (sym) == language_cplus) |
71c25dea TT |
717 | { |
718 | char *name = alloca (p - string + 1); | |
433759f7 | 719 | |
71c25dea TT |
720 | memcpy (name, string, p - string); |
721 | name[p - string] = '\0'; | |
722 | new_name = cp_canonicalize_string (name); | |
71c25dea TT |
723 | } |
724 | if (new_name != NULL) | |
725 | { | |
04a679b8 | 726 | SYMBOL_SET_NAMES (sym, new_name, strlen (new_name), 1, objfile); |
71c25dea TT |
727 | xfree (new_name); |
728 | } | |
729 | else | |
04a679b8 | 730 | SYMBOL_SET_NAMES (sym, string, p - string, 1, objfile); |
45c58896 SW |
731 | |
732 | if (SYMBOL_LANGUAGE (sym) == language_cplus) | |
a10964d1 | 733 | cp_scan_for_anonymous_namespaces (sym, objfile); |
45c58896 | 734 | |
c906108c SS |
735 | } |
736 | p++; | |
737 | ||
738 | /* Determine the type of name being defined. */ | |
739 | #if 0 | |
740 | /* Getting GDB to correctly skip the symbol on an undefined symbol | |
741 | descriptor and not ever dump core is a very dodgy proposition if | |
742 | we do things this way. I say the acorn RISC machine can just | |
743 | fix their compiler. */ | |
744 | /* The Acorn RISC machine's compiler can put out locals that don't | |
745 | start with "234=" or "(3,4)=", so assume anything other than the | |
746 | deftypes we know how to handle is a local. */ | |
747 | if (!strchr ("cfFGpPrStTvVXCR", *p)) | |
748 | #else | |
749 | if (isdigit (*p) || *p == '(' || *p == '-') | |
750 | #endif | |
751 | deftype = 'l'; | |
752 | else | |
753 | deftype = *p++; | |
754 | ||
755 | switch (deftype) | |
756 | { | |
757 | case 'c': | |
758 | /* c is a special case, not followed by a type-number. | |
c5aa993b JM |
759 | SYMBOL:c=iVALUE for an integer constant symbol. |
760 | SYMBOL:c=rVALUE for a floating constant symbol. | |
761 | SYMBOL:c=eTYPE,INTVALUE for an enum constant symbol. | |
762 | e.g. "b:c=e6,0" for "const b = blob1" | |
763 | (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */ | |
c906108c SS |
764 | if (*p != '=') |
765 | { | |
f1e6e072 | 766 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
c906108c | 767 | SYMBOL_TYPE (sym) = error_type (&p, objfile); |
176620f1 | 768 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
769 | add_symbol_to_list (sym, &file_symbols); |
770 | return sym; | |
771 | } | |
772 | ++p; | |
773 | switch (*p++) | |
774 | { | |
775 | case 'r': | |
776 | { | |
777 | double d = atof (p); | |
4e38b386 | 778 | gdb_byte *dbl_valu; |
6ccb9162 | 779 | struct type *dbl_type; |
c906108c SS |
780 | |
781 | /* FIXME-if-picky-about-floating-accuracy: Should be using | |
782 | target arithmetic to get the value. real.c in GCC | |
783 | probably has the necessary code. */ | |
784 | ||
46bf5051 | 785 | dbl_type = objfile_type (objfile)->builtin_double; |
4e38b386 | 786 | dbl_valu = |
4a146b47 | 787 | obstack_alloc (&objfile->objfile_obstack, |
6ccb9162 UW |
788 | TYPE_LENGTH (dbl_type)); |
789 | store_typed_floating (dbl_valu, dbl_type, d); | |
790 | ||
791 | SYMBOL_TYPE (sym) = dbl_type; | |
c906108c | 792 | SYMBOL_VALUE_BYTES (sym) = dbl_valu; |
f1e6e072 | 793 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST_BYTES; |
c906108c SS |
794 | } |
795 | break; | |
796 | case 'i': | |
797 | { | |
798 | /* Defining integer constants this way is kind of silly, | |
799 | since 'e' constants allows the compiler to give not | |
800 | only the value, but the type as well. C has at least | |
801 | int, long, unsigned int, and long long as constant | |
802 | types; other languages probably should have at least | |
803 | unsigned as well as signed constants. */ | |
804 | ||
46bf5051 | 805 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_long; |
c906108c | 806 | SYMBOL_VALUE (sym) = atoi (p); |
f1e6e072 | 807 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
c906108c SS |
808 | } |
809 | break; | |
ec8a089a PM |
810 | |
811 | case 'c': | |
812 | { | |
813 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_char; | |
814 | SYMBOL_VALUE (sym) = atoi (p); | |
f1e6e072 | 815 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
ec8a089a PM |
816 | } |
817 | break; | |
818 | ||
819 | case 's': | |
820 | { | |
821 | struct type *range_type; | |
822 | int ind = 0; | |
823 | char quote = *p++; | |
ec8a089a PM |
824 | gdb_byte *string_local = (gdb_byte *) alloca (strlen (p)); |
825 | gdb_byte *string_value; | |
826 | ||
827 | if (quote != '\'' && quote != '"') | |
828 | { | |
f1e6e072 | 829 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
ec8a089a PM |
830 | SYMBOL_TYPE (sym) = error_type (&p, objfile); |
831 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; | |
832 | add_symbol_to_list (sym, &file_symbols); | |
833 | return sym; | |
834 | } | |
835 | ||
836 | /* Find matching quote, rejecting escaped quotes. */ | |
837 | while (*p && *p != quote) | |
838 | { | |
839 | if (*p == '\\' && p[1] == quote) | |
840 | { | |
841 | string_local[ind] = (gdb_byte) quote; | |
842 | ind++; | |
843 | p += 2; | |
844 | } | |
845 | else if (*p) | |
846 | { | |
847 | string_local[ind] = (gdb_byte) (*p); | |
848 | ind++; | |
849 | p++; | |
850 | } | |
851 | } | |
852 | if (*p != quote) | |
853 | { | |
f1e6e072 | 854 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
ec8a089a PM |
855 | SYMBOL_TYPE (sym) = error_type (&p, objfile); |
856 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; | |
857 | add_symbol_to_list (sym, &file_symbols); | |
858 | return sym; | |
859 | } | |
860 | ||
861 | /* NULL terminate the string. */ | |
862 | string_local[ind] = 0; | |
3e43a32a | 863 | range_type |
0c9c3474 SA |
864 | = create_static_range_type (NULL, |
865 | objfile_type (objfile)->builtin_int, | |
866 | 0, ind); | |
ec8a089a PM |
867 | SYMBOL_TYPE (sym) = create_array_type (NULL, |
868 | objfile_type (objfile)->builtin_char, | |
869 | range_type); | |
870 | string_value = obstack_alloc (&objfile->objfile_obstack, ind + 1); | |
871 | memcpy (string_value, string_local, ind + 1); | |
872 | p++; | |
873 | ||
874 | SYMBOL_VALUE_BYTES (sym) = string_value; | |
f1e6e072 | 875 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST_BYTES; |
ec8a089a PM |
876 | } |
877 | break; | |
878 | ||
c906108c SS |
879 | case 'e': |
880 | /* SYMBOL:c=eTYPE,INTVALUE for a constant symbol whose value | |
881 | can be represented as integral. | |
882 | e.g. "b:c=e6,0" for "const b = blob1" | |
883 | (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */ | |
884 | { | |
f1e6e072 | 885 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
c906108c SS |
886 | SYMBOL_TYPE (sym) = read_type (&p, objfile); |
887 | ||
888 | if (*p != ',') | |
889 | { | |
890 | SYMBOL_TYPE (sym) = error_type (&p, objfile); | |
891 | break; | |
892 | } | |
893 | ++p; | |
894 | ||
895 | /* If the value is too big to fit in an int (perhaps because | |
896 | it is unsigned), or something like that, we silently get | |
897 | a bogus value. The type and everything else about it is | |
898 | correct. Ideally, we should be using whatever we have | |
899 | available for parsing unsigned and long long values, | |
900 | however. */ | |
901 | SYMBOL_VALUE (sym) = atoi (p); | |
902 | } | |
903 | break; | |
904 | default: | |
905 | { | |
f1e6e072 | 906 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
c906108c SS |
907 | SYMBOL_TYPE (sym) = error_type (&p, objfile); |
908 | } | |
909 | } | |
176620f1 | 910 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
911 | add_symbol_to_list (sym, &file_symbols); |
912 | return sym; | |
913 | ||
914 | case 'C': | |
915 | /* The name of a caught exception. */ | |
916 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
f1e6e072 | 917 | SYMBOL_ACLASS_INDEX (sym) = LOC_LABEL; |
176620f1 | 918 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
919 | SYMBOL_VALUE_ADDRESS (sym) = valu; |
920 | add_symbol_to_list (sym, &local_symbols); | |
921 | break; | |
922 | ||
923 | case 'f': | |
924 | /* A static function definition. */ | |
925 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
f1e6e072 | 926 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
176620f1 | 927 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
928 | add_symbol_to_list (sym, &file_symbols); |
929 | /* fall into process_function_types. */ | |
930 | ||
931 | process_function_types: | |
932 | /* Function result types are described as the result type in stabs. | |
c5aa993b JM |
933 | We need to convert this to the function-returning-type-X type |
934 | in GDB. E.g. "int" is converted to "function returning int". */ | |
c906108c SS |
935 | if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_FUNC) |
936 | SYMBOL_TYPE (sym) = lookup_function_type (SYMBOL_TYPE (sym)); | |
937 | ||
1e698235 DJ |
938 | /* All functions in C++ have prototypes. Stabs does not offer an |
939 | explicit way to identify prototyped or unprototyped functions, | |
940 | but both GCC and Sun CC emit stabs for the "call-as" type rather | |
941 | than the "declared-as" type for unprototyped functions, so | |
942 | we treat all functions as if they were prototyped. This is used | |
943 | primarily for promotion when calling the function from GDB. */ | |
876cecd0 | 944 | TYPE_PROTOTYPED (SYMBOL_TYPE (sym)) = 1; |
c906108c | 945 | |
c378eb4e | 946 | /* fall into process_prototype_types. */ |
c906108c SS |
947 | |
948 | process_prototype_types: | |
949 | /* Sun acc puts declared types of arguments here. */ | |
950 | if (*p == ';') | |
951 | { | |
952 | struct type *ftype = SYMBOL_TYPE (sym); | |
953 | int nsemi = 0; | |
954 | int nparams = 0; | |
955 | char *p1 = p; | |
956 | ||
957 | /* Obtain a worst case guess for the number of arguments | |
958 | by counting the semicolons. */ | |
959 | while (*p1) | |
960 | { | |
961 | if (*p1++ == ';') | |
962 | nsemi++; | |
963 | } | |
964 | ||
c378eb4e | 965 | /* Allocate parameter information fields and fill them in. */ |
c906108c SS |
966 | TYPE_FIELDS (ftype) = (struct field *) |
967 | TYPE_ALLOC (ftype, nsemi * sizeof (struct field)); | |
968 | while (*p++ == ';') | |
969 | { | |
970 | struct type *ptype; | |
971 | ||
972 | /* A type number of zero indicates the start of varargs. | |
c5aa993b | 973 | FIXME: GDB currently ignores vararg functions. */ |
c906108c SS |
974 | if (p[0] == '0' && p[1] == '\0') |
975 | break; | |
976 | ptype = read_type (&p, objfile); | |
977 | ||
978 | /* The Sun compilers mark integer arguments, which should | |
c5aa993b | 979 | be promoted to the width of the calling conventions, with |
c378eb4e | 980 | a type which references itself. This type is turned into |
c5aa993b | 981 | a TYPE_CODE_VOID type by read_type, and we have to turn |
5e2b427d UW |
982 | it back into builtin_int here. |
983 | FIXME: Do we need a new builtin_promoted_int_arg ? */ | |
c906108c | 984 | if (TYPE_CODE (ptype) == TYPE_CODE_VOID) |
46bf5051 | 985 | ptype = objfile_type (objfile)->builtin_int; |
8176bb6d DJ |
986 | TYPE_FIELD_TYPE (ftype, nparams) = ptype; |
987 | TYPE_FIELD_ARTIFICIAL (ftype, nparams++) = 0; | |
c906108c SS |
988 | } |
989 | TYPE_NFIELDS (ftype) = nparams; | |
876cecd0 | 990 | TYPE_PROTOTYPED (ftype) = 1; |
c906108c SS |
991 | } |
992 | break; | |
993 | ||
994 | case 'F': | |
995 | /* A global function definition. */ | |
996 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
f1e6e072 | 997 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
176620f1 | 998 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
999 | add_symbol_to_list (sym, &global_symbols); |
1000 | goto process_function_types; | |
1001 | ||
1002 | case 'G': | |
1003 | /* For a class G (global) symbol, it appears that the | |
c5aa993b JM |
1004 | value is not correct. It is necessary to search for the |
1005 | corresponding linker definition to find the value. | |
1006 | These definitions appear at the end of the namelist. */ | |
c906108c | 1007 | SYMBOL_TYPE (sym) = read_type (&p, objfile); |
f1e6e072 | 1008 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
176620f1 | 1009 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c | 1010 | /* Don't add symbol references to global_sym_chain. |
c5aa993b JM |
1011 | Symbol references don't have valid names and wont't match up with |
1012 | minimal symbols when the global_sym_chain is relocated. | |
1013 | We'll fixup symbol references when we fixup the defining symbol. */ | |
3567439c | 1014 | if (SYMBOL_LINKAGE_NAME (sym) && SYMBOL_LINKAGE_NAME (sym)[0] != '#') |
c906108c | 1015 | { |
3567439c | 1016 | i = hashname (SYMBOL_LINKAGE_NAME (sym)); |
c5aa993b JM |
1017 | SYMBOL_VALUE_CHAIN (sym) = global_sym_chain[i]; |
1018 | global_sym_chain[i] = sym; | |
c906108c SS |
1019 | } |
1020 | add_symbol_to_list (sym, &global_symbols); | |
1021 | break; | |
1022 | ||
1023 | /* This case is faked by a conditional above, | |
c5aa993b JM |
1024 | when there is no code letter in the dbx data. |
1025 | Dbx data never actually contains 'l'. */ | |
c906108c SS |
1026 | case 's': |
1027 | case 'l': | |
1028 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
f1e6e072 | 1029 | SYMBOL_ACLASS_INDEX (sym) = LOC_LOCAL; |
c906108c | 1030 | SYMBOL_VALUE (sym) = valu; |
176620f1 | 1031 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1032 | add_symbol_to_list (sym, &local_symbols); |
1033 | break; | |
1034 | ||
1035 | case 'p': | |
1036 | if (*p == 'F') | |
1037 | /* pF is a two-letter code that means a function parameter in Fortran. | |
1038 | The type-number specifies the type of the return value. | |
1039 | Translate it into a pointer-to-function type. */ | |
1040 | { | |
1041 | p++; | |
1042 | SYMBOL_TYPE (sym) | |
1043 | = lookup_pointer_type | |
c5aa993b | 1044 | (lookup_function_type (read_type (&p, objfile))); |
c906108c SS |
1045 | } |
1046 | else | |
1047 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
1048 | ||
f1e6e072 | 1049 | SYMBOL_ACLASS_INDEX (sym) = LOC_ARG; |
c906108c | 1050 | SYMBOL_VALUE (sym) = valu; |
176620f1 | 1051 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
2a2d4dc3 | 1052 | SYMBOL_IS_ARGUMENT (sym) = 1; |
c906108c SS |
1053 | add_symbol_to_list (sym, &local_symbols); |
1054 | ||
5e2b427d | 1055 | if (gdbarch_byte_order (gdbarch) != BFD_ENDIAN_BIG) |
c906108c SS |
1056 | { |
1057 | /* On little-endian machines, this crud is never necessary, | |
1058 | and, if the extra bytes contain garbage, is harmful. */ | |
1059 | break; | |
1060 | } | |
1061 | ||
1062 | /* If it's gcc-compiled, if it says `short', believe it. */ | |
f73e88f9 | 1063 | if (processing_gcc_compilation |
5e2b427d | 1064 | || gdbarch_believe_pcc_promotion (gdbarch)) |
c906108c SS |
1065 | break; |
1066 | ||
5e2b427d | 1067 | if (!gdbarch_believe_pcc_promotion (gdbarch)) |
7a292a7a | 1068 | { |
8ee56bcf AC |
1069 | /* If PCC says a parameter is a short or a char, it is |
1070 | really an int. */ | |
5e2b427d UW |
1071 | if (TYPE_LENGTH (SYMBOL_TYPE (sym)) |
1072 | < gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT | |
8ee56bcf | 1073 | && TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_INT) |
7a292a7a | 1074 | { |
8ee56bcf AC |
1075 | SYMBOL_TYPE (sym) = |
1076 | TYPE_UNSIGNED (SYMBOL_TYPE (sym)) | |
46bf5051 UW |
1077 | ? objfile_type (objfile)->builtin_unsigned_int |
1078 | : objfile_type (objfile)->builtin_int; | |
7a292a7a | 1079 | } |
8ee56bcf | 1080 | break; |
7a292a7a | 1081 | } |
c906108c SS |
1082 | |
1083 | case 'P': | |
1084 | /* acc seems to use P to declare the prototypes of functions that | |
1085 | are referenced by this file. gdb is not prepared to deal | |
1086 | with this extra information. FIXME, it ought to. */ | |
1087 | if (type == N_FUN) | |
1088 | { | |
1089 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
1090 | goto process_prototype_types; | |
1091 | } | |
c5aa993b | 1092 | /*FALLTHROUGH */ |
c906108c SS |
1093 | |
1094 | case 'R': | |
1095 | /* Parameter which is in a register. */ | |
1096 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
f1e6e072 | 1097 | SYMBOL_ACLASS_INDEX (sym) = stab_register_index; |
2a2d4dc3 | 1098 | SYMBOL_IS_ARGUMENT (sym) = 1; |
768a979c | 1099 | SYMBOL_VALUE (sym) = valu; |
176620f1 | 1100 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1101 | add_symbol_to_list (sym, &local_symbols); |
1102 | break; | |
1103 | ||
1104 | case 'r': | |
1105 | /* Register variable (either global or local). */ | |
1106 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
f1e6e072 | 1107 | SYMBOL_ACLASS_INDEX (sym) = stab_register_index; |
768a979c | 1108 | SYMBOL_VALUE (sym) = valu; |
176620f1 | 1109 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1110 | if (within_function) |
1111 | { | |
192cb3d4 MK |
1112 | /* Sun cc uses a pair of symbols, one 'p' and one 'r', with |
1113 | the same name to represent an argument passed in a | |
1114 | register. GCC uses 'P' for the same case. So if we find | |
1115 | such a symbol pair we combine it into one 'P' symbol. | |
1116 | For Sun cc we need to do this regardless of | |
1117 | stabs_argument_has_addr, because the compiler puts out | |
1118 | the 'p' symbol even if it never saves the argument onto | |
1119 | the stack. | |
1120 | ||
1121 | On most machines, we want to preserve both symbols, so | |
1122 | that we can still get information about what is going on | |
1123 | with the stack (VAX for computing args_printed, using | |
1124 | stack slots instead of saved registers in backtraces, | |
1125 | etc.). | |
c906108c SS |
1126 | |
1127 | Note that this code illegally combines | |
c5aa993b | 1128 | main(argc) struct foo argc; { register struct foo argc; } |
c906108c SS |
1129 | but this case is considered pathological and causes a warning |
1130 | from a decent compiler. */ | |
1131 | ||
1132 | if (local_symbols | |
1133 | && local_symbols->nsyms > 0 | |
5e2b427d | 1134 | && gdbarch_stabs_argument_has_addr (gdbarch, SYMBOL_TYPE (sym))) |
c906108c SS |
1135 | { |
1136 | struct symbol *prev_sym; | |
433759f7 | 1137 | |
c906108c SS |
1138 | prev_sym = local_symbols->symbol[local_symbols->nsyms - 1]; |
1139 | if ((SYMBOL_CLASS (prev_sym) == LOC_REF_ARG | |
1140 | || SYMBOL_CLASS (prev_sym) == LOC_ARG) | |
3567439c DJ |
1141 | && strcmp (SYMBOL_LINKAGE_NAME (prev_sym), |
1142 | SYMBOL_LINKAGE_NAME (sym)) == 0) | |
c906108c | 1143 | { |
f1e6e072 | 1144 | SYMBOL_ACLASS_INDEX (prev_sym) = stab_register_index; |
c906108c SS |
1145 | /* Use the type from the LOC_REGISTER; that is the type |
1146 | that is actually in that register. */ | |
1147 | SYMBOL_TYPE (prev_sym) = SYMBOL_TYPE (sym); | |
1148 | SYMBOL_VALUE (prev_sym) = SYMBOL_VALUE (sym); | |
1149 | sym = prev_sym; | |
1150 | break; | |
1151 | } | |
1152 | } | |
c5aa993b | 1153 | add_symbol_to_list (sym, &local_symbols); |
c906108c SS |
1154 | } |
1155 | else | |
c5aa993b | 1156 | add_symbol_to_list (sym, &file_symbols); |
c906108c SS |
1157 | break; |
1158 | ||
1159 | case 'S': | |
c378eb4e | 1160 | /* Static symbol at top level of file. */ |
c906108c | 1161 | SYMBOL_TYPE (sym) = read_type (&p, objfile); |
f1e6e072 | 1162 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
c906108c | 1163 | SYMBOL_VALUE_ADDRESS (sym) = valu; |
5e2b427d UW |
1164 | if (gdbarch_static_transform_name_p (gdbarch) |
1165 | && gdbarch_static_transform_name (gdbarch, | |
3567439c DJ |
1166 | SYMBOL_LINKAGE_NAME (sym)) |
1167 | != SYMBOL_LINKAGE_NAME (sym)) | |
c5aa993b | 1168 | { |
3b7344d5 | 1169 | struct bound_minimal_symbol msym; |
433759f7 | 1170 | |
3e43a32a MS |
1171 | msym = lookup_minimal_symbol (SYMBOL_LINKAGE_NAME (sym), |
1172 | NULL, objfile); | |
3b7344d5 | 1173 | if (msym.minsym != NULL) |
c5aa993b | 1174 | { |
0d5cff50 | 1175 | const char *new_name = gdbarch_static_transform_name |
3567439c | 1176 | (gdbarch, SYMBOL_LINKAGE_NAME (sym)); |
433759f7 | 1177 | |
3567439c | 1178 | SYMBOL_SET_LINKAGE_NAME (sym, new_name); |
77e371c0 | 1179 | SYMBOL_VALUE_ADDRESS (sym) = BMSYMBOL_VALUE_ADDRESS (msym); |
c5aa993b JM |
1180 | } |
1181 | } | |
176620f1 | 1182 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1183 | add_symbol_to_list (sym, &file_symbols); |
1184 | break; | |
1185 | ||
1186 | case 't': | |
52eea4ce JB |
1187 | /* In Ada, there is no distinction between typedef and non-typedef; |
1188 | any type declaration implicitly has the equivalent of a typedef, | |
c378eb4e | 1189 | and thus 't' is in fact equivalent to 'Tt'. |
52eea4ce JB |
1190 | |
1191 | Therefore, for Ada units, we check the character immediately | |
1192 | before the 't', and if we do not find a 'T', then make sure to | |
1193 | create the associated symbol in the STRUCT_DOMAIN ('t' definitions | |
1194 | will be stored in the VAR_DOMAIN). If the symbol was indeed | |
1195 | defined as 'Tt' then the STRUCT_DOMAIN symbol will be created | |
1196 | elsewhere, so we don't need to take care of that. | |
1197 | ||
1198 | This is important to do, because of forward references: | |
1199 | The cleanup of undefined types stored in undef_types only uses | |
1200 | STRUCT_DOMAIN symbols to perform the replacement. */ | |
1201 | synonym = (SYMBOL_LANGUAGE (sym) == language_ada && p[-2] != 'T'); | |
1202 | ||
e2cd42dd | 1203 | /* Typedef */ |
c906108c SS |
1204 | SYMBOL_TYPE (sym) = read_type (&p, objfile); |
1205 | ||
1206 | /* For a nameless type, we don't want a create a symbol, thus we | |
c378eb4e | 1207 | did not use `sym'. Return without further processing. */ |
c5aa993b JM |
1208 | if (nameless) |
1209 | return NULL; | |
c906108c | 1210 | |
f1e6e072 | 1211 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
c906108c | 1212 | SYMBOL_VALUE (sym) = valu; |
176620f1 | 1213 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c | 1214 | /* C++ vagaries: we may have a type which is derived from |
c5aa993b JM |
1215 | a base type which did not have its name defined when the |
1216 | derived class was output. We fill in the derived class's | |
1217 | base part member's name here in that case. */ | |
c906108c SS |
1218 | if (TYPE_NAME (SYMBOL_TYPE (sym)) != NULL) |
1219 | if ((TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_STRUCT | |
1220 | || TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_UNION) | |
1221 | && TYPE_N_BASECLASSES (SYMBOL_TYPE (sym))) | |
1222 | { | |
1223 | int j; | |
433759f7 | 1224 | |
c906108c SS |
1225 | for (j = TYPE_N_BASECLASSES (SYMBOL_TYPE (sym)) - 1; j >= 0; j--) |
1226 | if (TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym), j) == 0) | |
1227 | TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym), j) = | |
1228 | type_name_no_tag (TYPE_BASECLASS (SYMBOL_TYPE (sym), j)); | |
1229 | } | |
1230 | ||
1231 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == NULL) | |
1232 | { | |
1233 | /* gcc-2.6 or later (when using -fvtable-thunks) | |
1234 | emits a unique named type for a vtable entry. | |
c378eb4e | 1235 | Some gdb code depends on that specific name. */ |
c906108c SS |
1236 | extern const char vtbl_ptr_name[]; |
1237 | ||
1238 | if ((TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_PTR | |
3567439c | 1239 | && strcmp (SYMBOL_LINKAGE_NAME (sym), vtbl_ptr_name)) |
c906108c SS |
1240 | || TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_FUNC) |
1241 | { | |
1242 | /* If we are giving a name to a type such as "pointer to | |
c5aa993b JM |
1243 | foo" or "function returning foo", we better not set |
1244 | the TYPE_NAME. If the program contains "typedef char | |
1245 | *caddr_t;", we don't want all variables of type char | |
1246 | * to print as caddr_t. This is not just a | |
1247 | consequence of GDB's type management; PCC and GCC (at | |
1248 | least through version 2.4) both output variables of | |
1249 | either type char * or caddr_t with the type number | |
1250 | defined in the 't' symbol for caddr_t. If a future | |
1251 | compiler cleans this up it GDB is not ready for it | |
1252 | yet, but if it becomes ready we somehow need to | |
1253 | disable this check (without breaking the PCC/GCC2.4 | |
1254 | case). | |
1255 | ||
1256 | Sigh. | |
1257 | ||
1258 | Fortunately, this check seems not to be necessary | |
1259 | for anything except pointers or functions. */ | |
c378eb4e MS |
1260 | /* ezannoni: 2000-10-26. This seems to apply for |
1261 | versions of gcc older than 2.8. This was the original | |
49d97c60 | 1262 | problem: with the following code gdb would tell that |
c378eb4e MS |
1263 | the type for name1 is caddr_t, and func is char(). |
1264 | ||
49d97c60 EZ |
1265 | typedef char *caddr_t; |
1266 | char *name2; | |
1267 | struct x | |
1268 | { | |
c378eb4e | 1269 | char *name1; |
49d97c60 EZ |
1270 | } xx; |
1271 | char *func() | |
1272 | { | |
1273 | } | |
1274 | main () {} | |
1275 | */ | |
1276 | ||
c378eb4e | 1277 | /* Pascal accepts names for pointer types. */ |
49d97c60 EZ |
1278 | if (current_subfile->language == language_pascal) |
1279 | { | |
3567439c | 1280 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_LINKAGE_NAME (sym); |
49d97c60 | 1281 | } |
c906108c SS |
1282 | } |
1283 | else | |
3567439c | 1284 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_LINKAGE_NAME (sym); |
c906108c SS |
1285 | } |
1286 | ||
1287 | add_symbol_to_list (sym, &file_symbols); | |
52eea4ce JB |
1288 | |
1289 | if (synonym) | |
1290 | { | |
1291 | /* Create the STRUCT_DOMAIN clone. */ | |
e623cf5d | 1292 | struct symbol *struct_sym = allocate_symbol (objfile); |
52eea4ce JB |
1293 | |
1294 | *struct_sym = *sym; | |
f1e6e072 | 1295 | SYMBOL_ACLASS_INDEX (struct_sym) = LOC_TYPEDEF; |
52eea4ce JB |
1296 | SYMBOL_VALUE (struct_sym) = valu; |
1297 | SYMBOL_DOMAIN (struct_sym) = STRUCT_DOMAIN; | |
1298 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) | |
3e43a32a MS |
1299 | TYPE_NAME (SYMBOL_TYPE (sym)) |
1300 | = obconcat (&objfile->objfile_obstack, | |
1301 | SYMBOL_LINKAGE_NAME (sym), | |
1302 | (char *) NULL); | |
52eea4ce JB |
1303 | add_symbol_to_list (struct_sym, &file_symbols); |
1304 | } | |
1305 | ||
c906108c SS |
1306 | break; |
1307 | ||
1308 | case 'T': | |
1309 | /* Struct, union, or enum tag. For GNU C++, this can be be followed | |
c5aa993b | 1310 | by 't' which means we are typedef'ing it as well. */ |
c906108c SS |
1311 | synonym = *p == 't'; |
1312 | ||
1313 | if (synonym) | |
1314 | p++; | |
c906108c SS |
1315 | |
1316 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
25caa7a8 | 1317 | |
c906108c | 1318 | /* For a nameless type, we don't want a create a symbol, thus we |
c378eb4e | 1319 | did not use `sym'. Return without further processing. */ |
c5aa993b JM |
1320 | if (nameless) |
1321 | return NULL; | |
c906108c | 1322 | |
f1e6e072 | 1323 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
c906108c | 1324 | SYMBOL_VALUE (sym) = valu; |
176620f1 | 1325 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 1326 | if (TYPE_TAG_NAME (SYMBOL_TYPE (sym)) == 0) |
3e43a32a MS |
1327 | TYPE_TAG_NAME (SYMBOL_TYPE (sym)) |
1328 | = obconcat (&objfile->objfile_obstack, | |
1329 | SYMBOL_LINKAGE_NAME (sym), | |
1330 | (char *) NULL); | |
c906108c SS |
1331 | add_symbol_to_list (sym, &file_symbols); |
1332 | ||
1333 | if (synonym) | |
1334 | { | |
c378eb4e | 1335 | /* Clone the sym and then modify it. */ |
e623cf5d | 1336 | struct symbol *typedef_sym = allocate_symbol (objfile); |
433759f7 | 1337 | |
c906108c | 1338 | *typedef_sym = *sym; |
f1e6e072 | 1339 | SYMBOL_ACLASS_INDEX (typedef_sym) = LOC_TYPEDEF; |
c906108c | 1340 | SYMBOL_VALUE (typedef_sym) = valu; |
176620f1 | 1341 | SYMBOL_DOMAIN (typedef_sym) = VAR_DOMAIN; |
c906108c | 1342 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) |
3e43a32a MS |
1343 | TYPE_NAME (SYMBOL_TYPE (sym)) |
1344 | = obconcat (&objfile->objfile_obstack, | |
1345 | SYMBOL_LINKAGE_NAME (sym), | |
1346 | (char *) NULL); | |
c906108c SS |
1347 | add_symbol_to_list (typedef_sym, &file_symbols); |
1348 | } | |
1349 | break; | |
1350 | ||
1351 | case 'V': | |
c378eb4e | 1352 | /* Static symbol of local scope. */ |
c906108c | 1353 | SYMBOL_TYPE (sym) = read_type (&p, objfile); |
f1e6e072 | 1354 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
c906108c | 1355 | SYMBOL_VALUE_ADDRESS (sym) = valu; |
5e2b427d UW |
1356 | if (gdbarch_static_transform_name_p (gdbarch) |
1357 | && gdbarch_static_transform_name (gdbarch, | |
3567439c DJ |
1358 | SYMBOL_LINKAGE_NAME (sym)) |
1359 | != SYMBOL_LINKAGE_NAME (sym)) | |
c5aa993b | 1360 | { |
3b7344d5 | 1361 | struct bound_minimal_symbol msym; |
433759f7 MS |
1362 | |
1363 | msym = lookup_minimal_symbol (SYMBOL_LINKAGE_NAME (sym), | |
1364 | NULL, objfile); | |
3b7344d5 | 1365 | if (msym.minsym != NULL) |
c5aa993b | 1366 | { |
0d5cff50 | 1367 | const char *new_name = gdbarch_static_transform_name |
3567439c | 1368 | (gdbarch, SYMBOL_LINKAGE_NAME (sym)); |
433759f7 | 1369 | |
3567439c | 1370 | SYMBOL_SET_LINKAGE_NAME (sym, new_name); |
77e371c0 | 1371 | SYMBOL_VALUE_ADDRESS (sym) = BMSYMBOL_VALUE_ADDRESS (msym); |
c5aa993b JM |
1372 | } |
1373 | } | |
176620f1 | 1374 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1375 | add_symbol_to_list (sym, &local_symbols); |
1376 | break; | |
1377 | ||
1378 | case 'v': | |
1379 | /* Reference parameter */ | |
1380 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
f1e6e072 | 1381 | SYMBOL_ACLASS_INDEX (sym) = LOC_REF_ARG; |
2a2d4dc3 | 1382 | SYMBOL_IS_ARGUMENT (sym) = 1; |
c906108c | 1383 | SYMBOL_VALUE (sym) = valu; |
176620f1 | 1384 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1385 | add_symbol_to_list (sym, &local_symbols); |
1386 | break; | |
1387 | ||
1388 | case 'a': | |
1389 | /* Reference parameter which is in a register. */ | |
1390 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
f1e6e072 | 1391 | SYMBOL_ACLASS_INDEX (sym) = stab_regparm_index; |
2a2d4dc3 | 1392 | SYMBOL_IS_ARGUMENT (sym) = 1; |
768a979c | 1393 | SYMBOL_VALUE (sym) = valu; |
176620f1 | 1394 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1395 | add_symbol_to_list (sym, &local_symbols); |
1396 | break; | |
1397 | ||
1398 | case 'X': | |
1399 | /* This is used by Sun FORTRAN for "function result value". | |
c5aa993b JM |
1400 | Sun claims ("dbx and dbxtool interfaces", 2nd ed) |
1401 | that Pascal uses it too, but when I tried it Pascal used | |
1402 | "x:3" (local symbol) instead. */ | |
c906108c | 1403 | SYMBOL_TYPE (sym) = read_type (&p, objfile); |
f1e6e072 | 1404 | SYMBOL_ACLASS_INDEX (sym) = LOC_LOCAL; |
c906108c | 1405 | SYMBOL_VALUE (sym) = valu; |
176620f1 | 1406 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1407 | add_symbol_to_list (sym, &local_symbols); |
1408 | break; | |
c906108c SS |
1409 | |
1410 | default: | |
1411 | SYMBOL_TYPE (sym) = error_type (&p, objfile); | |
f1e6e072 | 1412 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
c906108c | 1413 | SYMBOL_VALUE (sym) = 0; |
176620f1 | 1414 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1415 | add_symbol_to_list (sym, &file_symbols); |
1416 | break; | |
1417 | } | |
1418 | ||
192cb3d4 MK |
1419 | /* Some systems pass variables of certain types by reference instead |
1420 | of by value, i.e. they will pass the address of a structure (in a | |
1421 | register or on the stack) instead of the structure itself. */ | |
c906108c | 1422 | |
5e2b427d | 1423 | if (gdbarch_stabs_argument_has_addr (gdbarch, SYMBOL_TYPE (sym)) |
2a2d4dc3 | 1424 | && SYMBOL_IS_ARGUMENT (sym)) |
c906108c | 1425 | { |
2a2d4dc3 | 1426 | /* We have to convert LOC_REGISTER to LOC_REGPARM_ADDR (for |
192cb3d4 | 1427 | variables passed in a register). */ |
2a2d4dc3 | 1428 | if (SYMBOL_CLASS (sym) == LOC_REGISTER) |
f1e6e072 | 1429 | SYMBOL_ACLASS_INDEX (sym) = LOC_REGPARM_ADDR; |
192cb3d4 MK |
1430 | /* Likewise for converting LOC_ARG to LOC_REF_ARG (for the 7th |
1431 | and subsequent arguments on SPARC, for example). */ | |
1432 | else if (SYMBOL_CLASS (sym) == LOC_ARG) | |
f1e6e072 | 1433 | SYMBOL_ACLASS_INDEX (sym) = LOC_REF_ARG; |
c906108c SS |
1434 | } |
1435 | ||
c906108c SS |
1436 | return sym; |
1437 | } | |
1438 | ||
c906108c SS |
1439 | /* Skip rest of this symbol and return an error type. |
1440 | ||
1441 | General notes on error recovery: error_type always skips to the | |
1442 | end of the symbol (modulo cretinous dbx symbol name continuation). | |
1443 | Thus code like this: | |
1444 | ||
1445 | if (*(*pp)++ != ';') | |
c5aa993b | 1446 | return error_type (pp, objfile); |
c906108c SS |
1447 | |
1448 | is wrong because if *pp starts out pointing at '\0' (typically as the | |
1449 | result of an earlier error), it will be incremented to point to the | |
1450 | start of the next symbol, which might produce strange results, at least | |
1451 | if you run off the end of the string table. Instead use | |
1452 | ||
1453 | if (**pp != ';') | |
c5aa993b | 1454 | return error_type (pp, objfile); |
c906108c SS |
1455 | ++*pp; |
1456 | ||
1457 | or | |
1458 | ||
1459 | if (**pp != ';') | |
c5aa993b | 1460 | foo = error_type (pp, objfile); |
c906108c | 1461 | else |
c5aa993b | 1462 | ++*pp; |
c906108c SS |
1463 | |
1464 | And in case it isn't obvious, the point of all this hair is so the compiler | |
1465 | can define new types and new syntaxes, and old versions of the | |
1466 | debugger will be able to read the new symbol tables. */ | |
1467 | ||
1468 | static struct type * | |
fba45db2 | 1469 | error_type (char **pp, struct objfile *objfile) |
c906108c | 1470 | { |
3e43a32a MS |
1471 | complaint (&symfile_complaints, |
1472 | _("couldn't parse type; debugger out of date?")); | |
c906108c SS |
1473 | while (1) |
1474 | { | |
1475 | /* Skip to end of symbol. */ | |
1476 | while (**pp != '\0') | |
1477 | { | |
1478 | (*pp)++; | |
1479 | } | |
1480 | ||
1481 | /* Check for and handle cretinous dbx symbol name continuation! */ | |
1482 | if ((*pp)[-1] == '\\' || (*pp)[-1] == '?') | |
1483 | { | |
1484 | *pp = next_symbol_text (objfile); | |
1485 | } | |
1486 | else | |
1487 | { | |
1488 | break; | |
1489 | } | |
1490 | } | |
46bf5051 | 1491 | return objfile_type (objfile)->builtin_error; |
c906108c | 1492 | } |
c906108c | 1493 | \f |
c5aa993b | 1494 | |
c906108c SS |
1495 | /* Read type information or a type definition; return the type. Even |
1496 | though this routine accepts either type information or a type | |
1497 | definition, the distinction is relevant--some parts of stabsread.c | |
1498 | assume that type information starts with a digit, '-', or '(' in | |
1499 | deciding whether to call read_type. */ | |
1500 | ||
a7a48797 | 1501 | static struct type * |
aa1ee363 | 1502 | read_type (char **pp, struct objfile *objfile) |
c906108c | 1503 | { |
52f0bd74 | 1504 | struct type *type = 0; |
c906108c SS |
1505 | struct type *type1; |
1506 | int typenums[2]; | |
1507 | char type_descriptor; | |
1508 | ||
1509 | /* Size in bits of type if specified by a type attribute, or -1 if | |
1510 | there is no size attribute. */ | |
1511 | int type_size = -1; | |
1512 | ||
c378eb4e | 1513 | /* Used to distinguish string and bitstring from char-array and set. */ |
c906108c SS |
1514 | int is_string = 0; |
1515 | ||
c378eb4e | 1516 | /* Used to distinguish vector from array. */ |
e2cd42dd MS |
1517 | int is_vector = 0; |
1518 | ||
c906108c SS |
1519 | /* Read type number if present. The type number may be omitted. |
1520 | for instance in a two-dimensional array declared with type | |
1521 | "ar1;1;10;ar1;1;10;4". */ | |
1522 | if ((**pp >= '0' && **pp <= '9') | |
1523 | || **pp == '(' | |
1524 | || **pp == '-') | |
1525 | { | |
1526 | if (read_type_number (pp, typenums) != 0) | |
1527 | return error_type (pp, objfile); | |
c5aa993b | 1528 | |
c906108c | 1529 | if (**pp != '=') |
8cfe231d JB |
1530 | { |
1531 | /* Type is not being defined here. Either it already | |
1532 | exists, or this is a forward reference to it. | |
1533 | dbx_alloc_type handles both cases. */ | |
1534 | type = dbx_alloc_type (typenums, objfile); | |
1535 | ||
1536 | /* If this is a forward reference, arrange to complain if it | |
1537 | doesn't get patched up by the time we're done | |
1538 | reading. */ | |
1539 | if (TYPE_CODE (type) == TYPE_CODE_UNDEF) | |
bf362611 | 1540 | add_undefined_type (type, typenums); |
8cfe231d JB |
1541 | |
1542 | return type; | |
1543 | } | |
c906108c SS |
1544 | |
1545 | /* Type is being defined here. */ | |
1546 | /* Skip the '='. | |
c5aa993b JM |
1547 | Also skip the type descriptor - we get it below with (*pp)[-1]. */ |
1548 | (*pp) += 2; | |
c906108c SS |
1549 | } |
1550 | else | |
1551 | { | |
1552 | /* 'typenums=' not present, type is anonymous. Read and return | |
c5aa993b | 1553 | the definition, but don't put it in the type vector. */ |
c906108c SS |
1554 | typenums[0] = typenums[1] = -1; |
1555 | (*pp)++; | |
1556 | } | |
1557 | ||
c5aa993b | 1558 | again: |
c906108c SS |
1559 | type_descriptor = (*pp)[-1]; |
1560 | switch (type_descriptor) | |
1561 | { | |
1562 | case 'x': | |
1563 | { | |
1564 | enum type_code code; | |
1565 | ||
1566 | /* Used to index through file_symbols. */ | |
1567 | struct pending *ppt; | |
1568 | int i; | |
c5aa993b | 1569 | |
c906108c SS |
1570 | /* Name including "struct", etc. */ |
1571 | char *type_name; | |
c5aa993b | 1572 | |
c906108c SS |
1573 | { |
1574 | char *from, *to, *p, *q1, *q2; | |
c5aa993b | 1575 | |
c906108c SS |
1576 | /* Set the type code according to the following letter. */ |
1577 | switch ((*pp)[0]) | |
1578 | { | |
1579 | case 's': | |
1580 | code = TYPE_CODE_STRUCT; | |
1581 | break; | |
1582 | case 'u': | |
1583 | code = TYPE_CODE_UNION; | |
1584 | break; | |
1585 | case 'e': | |
1586 | code = TYPE_CODE_ENUM; | |
1587 | break; | |
1588 | default: | |
1589 | { | |
1590 | /* Complain and keep going, so compilers can invent new | |
1591 | cross-reference types. */ | |
23136709 | 1592 | complaint (&symfile_complaints, |
3e43a32a MS |
1593 | _("Unrecognized cross-reference type `%c'"), |
1594 | (*pp)[0]); | |
c906108c SS |
1595 | code = TYPE_CODE_STRUCT; |
1596 | break; | |
1597 | } | |
1598 | } | |
c5aa993b | 1599 | |
c906108c SS |
1600 | q1 = strchr (*pp, '<'); |
1601 | p = strchr (*pp, ':'); | |
1602 | if (p == NULL) | |
1603 | return error_type (pp, objfile); | |
1604 | if (q1 && p > q1 && p[1] == ':') | |
1605 | { | |
1606 | int nesting_level = 0; | |
433759f7 | 1607 | |
c906108c SS |
1608 | for (q2 = q1; *q2; q2++) |
1609 | { | |
1610 | if (*q2 == '<') | |
1611 | nesting_level++; | |
1612 | else if (*q2 == '>') | |
1613 | nesting_level--; | |
1614 | else if (*q2 == ':' && nesting_level == 0) | |
1615 | break; | |
1616 | } | |
1617 | p = q2; | |
1618 | if (*p != ':') | |
1619 | return error_type (pp, objfile); | |
1620 | } | |
71c25dea TT |
1621 | type_name = NULL; |
1622 | if (current_subfile->language == language_cplus) | |
1623 | { | |
1624 | char *new_name, *name = alloca (p - *pp + 1); | |
433759f7 | 1625 | |
71c25dea TT |
1626 | memcpy (name, *pp, p - *pp); |
1627 | name[p - *pp] = '\0'; | |
1628 | new_name = cp_canonicalize_string (name); | |
1629 | if (new_name != NULL) | |
1630 | { | |
10f0c4bb TT |
1631 | type_name = obstack_copy0 (&objfile->objfile_obstack, |
1632 | new_name, strlen (new_name)); | |
71c25dea TT |
1633 | xfree (new_name); |
1634 | } | |
1635 | } | |
1636 | if (type_name == NULL) | |
1637 | { | |
3e43a32a MS |
1638 | to = type_name = (char *) |
1639 | obstack_alloc (&objfile->objfile_obstack, p - *pp + 1); | |
71c25dea TT |
1640 | |
1641 | /* Copy the name. */ | |
1642 | from = *pp + 1; | |
1643 | while (from < p) | |
1644 | *to++ = *from++; | |
1645 | *to = '\0'; | |
1646 | } | |
c5aa993b | 1647 | |
c906108c SS |
1648 | /* Set the pointer ahead of the name which we just read, and |
1649 | the colon. */ | |
71c25dea | 1650 | *pp = p + 1; |
c906108c SS |
1651 | } |
1652 | ||
149d821b JB |
1653 | /* If this type has already been declared, then reuse the same |
1654 | type, rather than allocating a new one. This saves some | |
1655 | memory. */ | |
c906108c SS |
1656 | |
1657 | for (ppt = file_symbols; ppt; ppt = ppt->next) | |
1658 | for (i = 0; i < ppt->nsyms; i++) | |
1659 | { | |
1660 | struct symbol *sym = ppt->symbol[i]; | |
1661 | ||
1662 | if (SYMBOL_CLASS (sym) == LOC_TYPEDEF | |
176620f1 | 1663 | && SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN |
c906108c | 1664 | && (TYPE_CODE (SYMBOL_TYPE (sym)) == code) |
3567439c | 1665 | && strcmp (SYMBOL_LINKAGE_NAME (sym), type_name) == 0) |
c906108c | 1666 | { |
b99607ea | 1667 | obstack_free (&objfile->objfile_obstack, type_name); |
c906108c | 1668 | type = SYMBOL_TYPE (sym); |
149d821b | 1669 | if (typenums[0] != -1) |
46bf5051 | 1670 | *dbx_lookup_type (typenums, objfile) = type; |
c906108c SS |
1671 | return type; |
1672 | } | |
1673 | } | |
1674 | ||
1675 | /* Didn't find the type to which this refers, so we must | |
1676 | be dealing with a forward reference. Allocate a type | |
1677 | structure for it, and keep track of it so we can | |
1678 | fill in the rest of the fields when we get the full | |
1679 | type. */ | |
1680 | type = dbx_alloc_type (typenums, objfile); | |
1681 | TYPE_CODE (type) = code; | |
1682 | TYPE_TAG_NAME (type) = type_name; | |
c5aa993b | 1683 | INIT_CPLUS_SPECIFIC (type); |
876cecd0 | 1684 | TYPE_STUB (type) = 1; |
c906108c | 1685 | |
bf362611 | 1686 | add_undefined_type (type, typenums); |
c906108c SS |
1687 | return type; |
1688 | } | |
1689 | ||
c5aa993b | 1690 | case '-': /* RS/6000 built-in type */ |
c906108c SS |
1691 | case '0': |
1692 | case '1': | |
1693 | case '2': | |
1694 | case '3': | |
1695 | case '4': | |
1696 | case '5': | |
1697 | case '6': | |
1698 | case '7': | |
1699 | case '8': | |
1700 | case '9': | |
1701 | case '(': | |
1702 | (*pp)--; | |
1703 | ||
1704 | /* We deal with something like t(1,2)=(3,4)=... which | |
c378eb4e | 1705 | the Lucid compiler and recent gcc versions (post 2.7.3) use. */ |
c906108c SS |
1706 | |
1707 | /* Allocate and enter the typedef type first. | |
c378eb4e | 1708 | This handles recursive types. */ |
c906108c SS |
1709 | type = dbx_alloc_type (typenums, objfile); |
1710 | TYPE_CODE (type) = TYPE_CODE_TYPEDEF; | |
c5aa993b JM |
1711 | { |
1712 | struct type *xtype = read_type (pp, objfile); | |
433759f7 | 1713 | |
c906108c SS |
1714 | if (type == xtype) |
1715 | { | |
1716 | /* It's being defined as itself. That means it is "void". */ | |
1717 | TYPE_CODE (type) = TYPE_CODE_VOID; | |
1718 | TYPE_LENGTH (type) = 1; | |
1719 | } | |
1720 | else if (type_size >= 0 || is_string) | |
1721 | { | |
dd6bda65 DJ |
1722 | /* This is the absolute wrong way to construct types. Every |
1723 | other debug format has found a way around this problem and | |
1724 | the related problems with unnecessarily stubbed types; | |
1725 | someone motivated should attempt to clean up the issue | |
1726 | here as well. Once a type pointed to has been created it | |
13a393b0 JB |
1727 | should not be modified. |
1728 | ||
1729 | Well, it's not *absolutely* wrong. Constructing recursive | |
1730 | types (trees, linked lists) necessarily entails modifying | |
1731 | types after creating them. Constructing any loop structure | |
1732 | entails side effects. The Dwarf 2 reader does handle this | |
1733 | more gracefully (it never constructs more than once | |
1734 | instance of a type object, so it doesn't have to copy type | |
1735 | objects wholesale), but it still mutates type objects after | |
1736 | other folks have references to them. | |
1737 | ||
1738 | Keep in mind that this circularity/mutation issue shows up | |
1739 | at the source language level, too: C's "incomplete types", | |
1740 | for example. So the proper cleanup, I think, would be to | |
1741 | limit GDB's type smashing to match exactly those required | |
1742 | by the source language. So GDB could have a | |
1743 | "complete_this_type" function, but never create unnecessary | |
1744 | copies of a type otherwise. */ | |
dd6bda65 | 1745 | replace_type (type, xtype); |
c906108c SS |
1746 | TYPE_NAME (type) = NULL; |
1747 | TYPE_TAG_NAME (type) = NULL; | |
1748 | } | |
1749 | else | |
1750 | { | |
876cecd0 | 1751 | TYPE_TARGET_STUB (type) = 1; |
c906108c SS |
1752 | TYPE_TARGET_TYPE (type) = xtype; |
1753 | } | |
1754 | } | |
1755 | break; | |
1756 | ||
c5aa993b JM |
1757 | /* In the following types, we must be sure to overwrite any existing |
1758 | type that the typenums refer to, rather than allocating a new one | |
1759 | and making the typenums point to the new one. This is because there | |
1760 | may already be pointers to the existing type (if it had been | |
1761 | forward-referenced), and we must change it to a pointer, function, | |
1762 | reference, or whatever, *in-place*. */ | |
c906108c | 1763 | |
e2cd42dd | 1764 | case '*': /* Pointer to another type */ |
c906108c | 1765 | type1 = read_type (pp, objfile); |
46bf5051 | 1766 | type = make_pointer_type (type1, dbx_lookup_type (typenums, objfile)); |
c906108c SS |
1767 | break; |
1768 | ||
c5aa993b | 1769 | case '&': /* Reference to another type */ |
c906108c | 1770 | type1 = read_type (pp, objfile); |
46bf5051 | 1771 | type = make_reference_type (type1, dbx_lookup_type (typenums, objfile)); |
c906108c SS |
1772 | break; |
1773 | ||
c5aa993b | 1774 | case 'f': /* Function returning another type */ |
c906108c | 1775 | type1 = read_type (pp, objfile); |
0c8b41f1 | 1776 | type = make_function_type (type1, dbx_lookup_type (typenums, objfile)); |
c906108c SS |
1777 | break; |
1778 | ||
da966255 JB |
1779 | case 'g': /* Prototyped function. (Sun) */ |
1780 | { | |
1781 | /* Unresolved questions: | |
1782 | ||
1783 | - According to Sun's ``STABS Interface Manual'', for 'f' | |
1784 | and 'F' symbol descriptors, a `0' in the argument type list | |
1785 | indicates a varargs function. But it doesn't say how 'g' | |
1786 | type descriptors represent that info. Someone with access | |
1787 | to Sun's toolchain should try it out. | |
1788 | ||
1789 | - According to the comment in define_symbol (search for | |
1790 | `process_prototype_types:'), Sun emits integer arguments as | |
1791 | types which ref themselves --- like `void' types. Do we | |
1792 | have to deal with that here, too? Again, someone with | |
1793 | access to Sun's toolchain should try it out and let us | |
1794 | know. */ | |
1795 | ||
1796 | const char *type_start = (*pp) - 1; | |
1797 | struct type *return_type = read_type (pp, objfile); | |
1798 | struct type *func_type | |
46bf5051 | 1799 | = make_function_type (return_type, |
0c8b41f1 | 1800 | dbx_lookup_type (typenums, objfile)); |
da966255 JB |
1801 | struct type_list { |
1802 | struct type *type; | |
1803 | struct type_list *next; | |
1804 | } *arg_types = 0; | |
1805 | int num_args = 0; | |
1806 | ||
1807 | while (**pp && **pp != '#') | |
1808 | { | |
1809 | struct type *arg_type = read_type (pp, objfile); | |
1810 | struct type_list *new = alloca (sizeof (*new)); | |
1811 | new->type = arg_type; | |
1812 | new->next = arg_types; | |
1813 | arg_types = new; | |
1814 | num_args++; | |
1815 | } | |
1816 | if (**pp == '#') | |
1817 | ++*pp; | |
1818 | else | |
1819 | { | |
23136709 | 1820 | complaint (&symfile_complaints, |
3e43a32a MS |
1821 | _("Prototyped function type didn't " |
1822 | "end arguments with `#':\n%s"), | |
23136709 | 1823 | type_start); |
da966255 JB |
1824 | } |
1825 | ||
1826 | /* If there is just one argument whose type is `void', then | |
1827 | that's just an empty argument list. */ | |
1828 | if (arg_types | |
1829 | && ! arg_types->next | |
1830 | && TYPE_CODE (arg_types->type) == TYPE_CODE_VOID) | |
1831 | num_args = 0; | |
1832 | ||
1833 | TYPE_FIELDS (func_type) | |
1834 | = (struct field *) TYPE_ALLOC (func_type, | |
1835 | num_args * sizeof (struct field)); | |
1836 | memset (TYPE_FIELDS (func_type), 0, num_args * sizeof (struct field)); | |
1837 | { | |
1838 | int i; | |
1839 | struct type_list *t; | |
1840 | ||
1841 | /* We stuck each argument type onto the front of the list | |
1842 | when we read it, so the list is reversed. Build the | |
1843 | fields array right-to-left. */ | |
1844 | for (t = arg_types, i = num_args - 1; t; t = t->next, i--) | |
1845 | TYPE_FIELD_TYPE (func_type, i) = t->type; | |
1846 | } | |
1847 | TYPE_NFIELDS (func_type) = num_args; | |
876cecd0 | 1848 | TYPE_PROTOTYPED (func_type) = 1; |
da966255 JB |
1849 | |
1850 | type = func_type; | |
1851 | break; | |
1852 | } | |
1853 | ||
c5aa993b | 1854 | case 'k': /* Const qualifier on some type (Sun) */ |
c906108c | 1855 | type = read_type (pp, objfile); |
d7242108 | 1856 | type = make_cv_type (1, TYPE_VOLATILE (type), type, |
46bf5051 | 1857 | dbx_lookup_type (typenums, objfile)); |
c906108c SS |
1858 | break; |
1859 | ||
c5aa993b | 1860 | case 'B': /* Volatile qual on some type (Sun) */ |
c906108c | 1861 | type = read_type (pp, objfile); |
d7242108 | 1862 | type = make_cv_type (TYPE_CONST (type), 1, type, |
46bf5051 | 1863 | dbx_lookup_type (typenums, objfile)); |
c906108c SS |
1864 | break; |
1865 | ||
1866 | case '@': | |
c5aa993b JM |
1867 | if (isdigit (**pp) || **pp == '(' || **pp == '-') |
1868 | { /* Member (class & variable) type */ | |
c906108c SS |
1869 | /* FIXME -- we should be doing smash_to_XXX types here. */ |
1870 | ||
1871 | struct type *domain = read_type (pp, objfile); | |
1872 | struct type *memtype; | |
1873 | ||
1874 | if (**pp != ',') | |
1875 | /* Invalid member type data format. */ | |
1876 | return error_type (pp, objfile); | |
1877 | ++*pp; | |
1878 | ||
1879 | memtype = read_type (pp, objfile); | |
1880 | type = dbx_alloc_type (typenums, objfile); | |
0d5de010 | 1881 | smash_to_memberptr_type (type, domain, memtype); |
c906108c | 1882 | } |
c5aa993b JM |
1883 | else |
1884 | /* type attribute */ | |
c906108c SS |
1885 | { |
1886 | char *attr = *pp; | |
433759f7 | 1887 | |
c906108c SS |
1888 | /* Skip to the semicolon. */ |
1889 | while (**pp != ';' && **pp != '\0') | |
1890 | ++(*pp); | |
1891 | if (**pp == '\0') | |
1892 | return error_type (pp, objfile); | |
1893 | else | |
c5aa993b | 1894 | ++ * pp; /* Skip the semicolon. */ |
c906108c SS |
1895 | |
1896 | switch (*attr) | |
1897 | { | |
e2cd42dd | 1898 | case 's': /* Size attribute */ |
c906108c SS |
1899 | type_size = atoi (attr + 1); |
1900 | if (type_size <= 0) | |
1901 | type_size = -1; | |
1902 | break; | |
1903 | ||
e2cd42dd | 1904 | case 'S': /* String attribute */ |
c378eb4e | 1905 | /* FIXME: check to see if following type is array? */ |
c906108c SS |
1906 | is_string = 1; |
1907 | break; | |
1908 | ||
e2cd42dd | 1909 | case 'V': /* Vector attribute */ |
c378eb4e | 1910 | /* FIXME: check to see if following type is array? */ |
e2cd42dd MS |
1911 | is_vector = 1; |
1912 | break; | |
1913 | ||
c906108c SS |
1914 | default: |
1915 | /* Ignore unrecognized type attributes, so future compilers | |
c5aa993b | 1916 | can invent new ones. */ |
c906108c SS |
1917 | break; |
1918 | } | |
1919 | ++*pp; | |
1920 | goto again; | |
1921 | } | |
1922 | break; | |
1923 | ||
c5aa993b | 1924 | case '#': /* Method (class & fn) type */ |
c906108c SS |
1925 | if ((*pp)[0] == '#') |
1926 | { | |
1927 | /* We'll get the parameter types from the name. */ | |
1928 | struct type *return_type; | |
1929 | ||
1930 | (*pp)++; | |
1931 | return_type = read_type (pp, objfile); | |
1932 | if (*(*pp)++ != ';') | |
23136709 | 1933 | complaint (&symfile_complaints, |
3e43a32a MS |
1934 | _("invalid (minimal) member type " |
1935 | "data format at symtab pos %d."), | |
23136709 | 1936 | symnum); |
c906108c SS |
1937 | type = allocate_stub_method (return_type); |
1938 | if (typenums[0] != -1) | |
46bf5051 | 1939 | *dbx_lookup_type (typenums, objfile) = type; |
c906108c SS |
1940 | } |
1941 | else | |
1942 | { | |
1943 | struct type *domain = read_type (pp, objfile); | |
1944 | struct type *return_type; | |
ad2f7632 DJ |
1945 | struct field *args; |
1946 | int nargs, varargs; | |
c906108c SS |
1947 | |
1948 | if (**pp != ',') | |
1949 | /* Invalid member type data format. */ | |
1950 | return error_type (pp, objfile); | |
1951 | else | |
1952 | ++(*pp); | |
1953 | ||
1954 | return_type = read_type (pp, objfile); | |
ad2f7632 | 1955 | args = read_args (pp, ';', objfile, &nargs, &varargs); |
0a029df5 DJ |
1956 | if (args == NULL) |
1957 | return error_type (pp, objfile); | |
c906108c | 1958 | type = dbx_alloc_type (typenums, objfile); |
ad2f7632 DJ |
1959 | smash_to_method_type (type, domain, return_type, args, |
1960 | nargs, varargs); | |
c906108c SS |
1961 | } |
1962 | break; | |
1963 | ||
c5aa993b | 1964 | case 'r': /* Range type */ |
94e10a22 | 1965 | type = read_range_type (pp, typenums, type_size, objfile); |
c906108c | 1966 | if (typenums[0] != -1) |
46bf5051 | 1967 | *dbx_lookup_type (typenums, objfile) = type; |
c906108c SS |
1968 | break; |
1969 | ||
1970 | case 'b': | |
c906108c SS |
1971 | { |
1972 | /* Sun ACC builtin int type */ | |
1973 | type = read_sun_builtin_type (pp, typenums, objfile); | |
1974 | if (typenums[0] != -1) | |
46bf5051 | 1975 | *dbx_lookup_type (typenums, objfile) = type; |
c906108c SS |
1976 | } |
1977 | break; | |
1978 | ||
c5aa993b | 1979 | case 'R': /* Sun ACC builtin float type */ |
c906108c SS |
1980 | type = read_sun_floating_type (pp, typenums, objfile); |
1981 | if (typenums[0] != -1) | |
46bf5051 | 1982 | *dbx_lookup_type (typenums, objfile) = type; |
c906108c | 1983 | break; |
c5aa993b JM |
1984 | |
1985 | case 'e': /* Enumeration type */ | |
c906108c SS |
1986 | type = dbx_alloc_type (typenums, objfile); |
1987 | type = read_enum_type (pp, type, objfile); | |
1988 | if (typenums[0] != -1) | |
46bf5051 | 1989 | *dbx_lookup_type (typenums, objfile) = type; |
c906108c SS |
1990 | break; |
1991 | ||
c5aa993b JM |
1992 | case 's': /* Struct type */ |
1993 | case 'u': /* Union type */ | |
2ae1c2d2 JB |
1994 | { |
1995 | enum type_code type_code = TYPE_CODE_UNDEF; | |
1996 | type = dbx_alloc_type (typenums, objfile); | |
1997 | switch (type_descriptor) | |
1998 | { | |
1999 | case 's': | |
2000 | type_code = TYPE_CODE_STRUCT; | |
2001 | break; | |
2002 | case 'u': | |
2003 | type_code = TYPE_CODE_UNION; | |
2004 | break; | |
2005 | } | |
2006 | type = read_struct_type (pp, type, type_code, objfile); | |
2007 | break; | |
2008 | } | |
c906108c | 2009 | |
c5aa993b | 2010 | case 'a': /* Array type */ |
c906108c SS |
2011 | if (**pp != 'r') |
2012 | return error_type (pp, objfile); | |
2013 | ++*pp; | |
c5aa993b | 2014 | |
c906108c SS |
2015 | type = dbx_alloc_type (typenums, objfile); |
2016 | type = read_array_type (pp, type, objfile); | |
2017 | if (is_string) | |
2018 | TYPE_CODE (type) = TYPE_CODE_STRING; | |
e2cd42dd | 2019 | if (is_vector) |
ea37ba09 | 2020 | make_vector_type (type); |
c906108c SS |
2021 | break; |
2022 | ||
6b1755ce | 2023 | case 'S': /* Set type */ |
c906108c | 2024 | type1 = read_type (pp, objfile); |
c5aa993b | 2025 | type = create_set_type ((struct type *) NULL, type1); |
c906108c | 2026 | if (typenums[0] != -1) |
46bf5051 | 2027 | *dbx_lookup_type (typenums, objfile) = type; |
c906108c SS |
2028 | break; |
2029 | ||
2030 | default: | |
c378eb4e MS |
2031 | --*pp; /* Go back to the symbol in error. */ |
2032 | /* Particularly important if it was \0! */ | |
c906108c SS |
2033 | return error_type (pp, objfile); |
2034 | } | |
2035 | ||
2036 | if (type == 0) | |
2037 | { | |
8a3fe4f8 | 2038 | warning (_("GDB internal error, type is NULL in stabsread.c.")); |
c906108c SS |
2039 | return error_type (pp, objfile); |
2040 | } | |
2041 | ||
2042 | /* Size specified in a type attribute overrides any other size. */ | |
2043 | if (type_size != -1) | |
2044 | TYPE_LENGTH (type) = (type_size + TARGET_CHAR_BIT - 1) / TARGET_CHAR_BIT; | |
2045 | ||
2046 | return type; | |
2047 | } | |
2048 | \f | |
2049 | /* RS/6000 xlc/dbx combination uses a set of builtin types, starting from -1. | |
c378eb4e | 2050 | Return the proper type node for a given builtin type number. */ |
c906108c | 2051 | |
46bf5051 UW |
2052 | static const struct objfile_data *rs6000_builtin_type_data; |
2053 | ||
c906108c | 2054 | static struct type * |
46bf5051 | 2055 | rs6000_builtin_type (int typenum, struct objfile *objfile) |
c906108c | 2056 | { |
3e43a32a MS |
2057 | struct type **negative_types = objfile_data (objfile, |
2058 | rs6000_builtin_type_data); | |
46bf5051 | 2059 | |
c906108c SS |
2060 | /* We recognize types numbered from -NUMBER_RECOGNIZED to -1. */ |
2061 | #define NUMBER_RECOGNIZED 34 | |
c906108c SS |
2062 | struct type *rettype = NULL; |
2063 | ||
2064 | if (typenum >= 0 || typenum < -NUMBER_RECOGNIZED) | |
2065 | { | |
e2e0b3e5 | 2066 | complaint (&symfile_complaints, _("Unknown builtin type %d"), typenum); |
46bf5051 | 2067 | return objfile_type (objfile)->builtin_error; |
c906108c | 2068 | } |
46bf5051 UW |
2069 | |
2070 | if (!negative_types) | |
2071 | { | |
2072 | /* This includes an empty slot for type number -0. */ | |
2073 | negative_types = OBSTACK_CALLOC (&objfile->objfile_obstack, | |
2074 | NUMBER_RECOGNIZED + 1, struct type *); | |
2075 | set_objfile_data (objfile, rs6000_builtin_type_data, negative_types); | |
2076 | } | |
2077 | ||
c906108c SS |
2078 | if (negative_types[-typenum] != NULL) |
2079 | return negative_types[-typenum]; | |
2080 | ||
2081 | #if TARGET_CHAR_BIT != 8 | |
c5aa993b | 2082 | #error This code wrong for TARGET_CHAR_BIT not 8 |
c906108c SS |
2083 | /* These definitions all assume that TARGET_CHAR_BIT is 8. I think |
2084 | that if that ever becomes not true, the correct fix will be to | |
2085 | make the size in the struct type to be in bits, not in units of | |
2086 | TARGET_CHAR_BIT. */ | |
2087 | #endif | |
2088 | ||
2089 | switch (-typenum) | |
2090 | { | |
2091 | case 1: | |
2092 | /* The size of this and all the other types are fixed, defined | |
c5aa993b JM |
2093 | by the debugging format. If there is a type called "int" which |
2094 | is other than 32 bits, then it should use a new negative type | |
2095 | number (or avoid negative type numbers for that case). | |
2096 | See stabs.texinfo. */ | |
46bf5051 | 2097 | rettype = init_type (TYPE_CODE_INT, 4, 0, "int", objfile); |
c906108c SS |
2098 | break; |
2099 | case 2: | |
46bf5051 | 2100 | rettype = init_type (TYPE_CODE_INT, 1, 0, "char", objfile); |
c906108c SS |
2101 | break; |
2102 | case 3: | |
46bf5051 | 2103 | rettype = init_type (TYPE_CODE_INT, 2, 0, "short", objfile); |
c906108c SS |
2104 | break; |
2105 | case 4: | |
46bf5051 | 2106 | rettype = init_type (TYPE_CODE_INT, 4, 0, "long", objfile); |
c906108c SS |
2107 | break; |
2108 | case 5: | |
2109 | rettype = init_type (TYPE_CODE_INT, 1, TYPE_FLAG_UNSIGNED, | |
46bf5051 | 2110 | "unsigned char", objfile); |
c906108c SS |
2111 | break; |
2112 | case 6: | |
46bf5051 | 2113 | rettype = init_type (TYPE_CODE_INT, 1, 0, "signed char", objfile); |
c906108c SS |
2114 | break; |
2115 | case 7: | |
2116 | rettype = init_type (TYPE_CODE_INT, 2, TYPE_FLAG_UNSIGNED, | |
46bf5051 | 2117 | "unsigned short", objfile); |
c906108c SS |
2118 | break; |
2119 | case 8: | |
2120 | rettype = init_type (TYPE_CODE_INT, 4, TYPE_FLAG_UNSIGNED, | |
46bf5051 | 2121 | "unsigned int", objfile); |
c906108c SS |
2122 | break; |
2123 | case 9: | |
2124 | rettype = init_type (TYPE_CODE_INT, 4, TYPE_FLAG_UNSIGNED, | |
46bf5051 | 2125 | "unsigned", objfile); |
89acf84d | 2126 | break; |
c906108c SS |
2127 | case 10: |
2128 | rettype = init_type (TYPE_CODE_INT, 4, TYPE_FLAG_UNSIGNED, | |
46bf5051 | 2129 | "unsigned long", objfile); |
c906108c SS |
2130 | break; |
2131 | case 11: | |
46bf5051 | 2132 | rettype = init_type (TYPE_CODE_VOID, 1, 0, "void", objfile); |
c906108c SS |
2133 | break; |
2134 | case 12: | |
2135 | /* IEEE single precision (32 bit). */ | |
46bf5051 | 2136 | rettype = init_type (TYPE_CODE_FLT, 4, 0, "float", objfile); |
c906108c SS |
2137 | break; |
2138 | case 13: | |
2139 | /* IEEE double precision (64 bit). */ | |
46bf5051 | 2140 | rettype = init_type (TYPE_CODE_FLT, 8, 0, "double", objfile); |
c906108c SS |
2141 | break; |
2142 | case 14: | |
2143 | /* This is an IEEE double on the RS/6000, and different machines with | |
c5aa993b JM |
2144 | different sizes for "long double" should use different negative |
2145 | type numbers. See stabs.texinfo. */ | |
46bf5051 | 2146 | rettype = init_type (TYPE_CODE_FLT, 8, 0, "long double", objfile); |
c906108c SS |
2147 | break; |
2148 | case 15: | |
46bf5051 | 2149 | rettype = init_type (TYPE_CODE_INT, 4, 0, "integer", objfile); |
c906108c SS |
2150 | break; |
2151 | case 16: | |
2152 | rettype = init_type (TYPE_CODE_BOOL, 4, TYPE_FLAG_UNSIGNED, | |
46bf5051 | 2153 | "boolean", objfile); |
c906108c SS |
2154 | break; |
2155 | case 17: | |
46bf5051 | 2156 | rettype = init_type (TYPE_CODE_FLT, 4, 0, "short real", objfile); |
c906108c SS |
2157 | break; |
2158 | case 18: | |
46bf5051 | 2159 | rettype = init_type (TYPE_CODE_FLT, 8, 0, "real", objfile); |
c906108c SS |
2160 | break; |
2161 | case 19: | |
46bf5051 | 2162 | rettype = init_type (TYPE_CODE_ERROR, 0, 0, "stringptr", objfile); |
c906108c SS |
2163 | break; |
2164 | case 20: | |
2165 | rettype = init_type (TYPE_CODE_CHAR, 1, TYPE_FLAG_UNSIGNED, | |
46bf5051 | 2166 | "character", objfile); |
c906108c SS |
2167 | break; |
2168 | case 21: | |
2169 | rettype = init_type (TYPE_CODE_BOOL, 1, TYPE_FLAG_UNSIGNED, | |
46bf5051 | 2170 | "logical*1", objfile); |
c906108c SS |
2171 | break; |
2172 | case 22: | |
2173 | rettype = init_type (TYPE_CODE_BOOL, 2, TYPE_FLAG_UNSIGNED, | |
46bf5051 | 2174 | "logical*2", objfile); |
c906108c SS |
2175 | break; |
2176 | case 23: | |
2177 | rettype = init_type (TYPE_CODE_BOOL, 4, TYPE_FLAG_UNSIGNED, | |
46bf5051 | 2178 | "logical*4", objfile); |
c906108c SS |
2179 | break; |
2180 | case 24: | |
2181 | rettype = init_type (TYPE_CODE_BOOL, 4, TYPE_FLAG_UNSIGNED, | |
46bf5051 | 2182 | "logical", objfile); |
c906108c SS |
2183 | break; |
2184 | case 25: | |
2185 | /* Complex type consisting of two IEEE single precision values. */ | |
46bf5051 | 2186 | rettype = init_type (TYPE_CODE_COMPLEX, 8, 0, "complex", objfile); |
f65ca430 | 2187 | TYPE_TARGET_TYPE (rettype) = init_type (TYPE_CODE_FLT, 4, 0, "float", |
46bf5051 | 2188 | objfile); |
c906108c SS |
2189 | break; |
2190 | case 26: | |
2191 | /* Complex type consisting of two IEEE double precision values. */ | |
2192 | rettype = init_type (TYPE_CODE_COMPLEX, 16, 0, "double complex", NULL); | |
f65ca430 | 2193 | TYPE_TARGET_TYPE (rettype) = init_type (TYPE_CODE_FLT, 8, 0, "double", |
46bf5051 | 2194 | objfile); |
c906108c SS |
2195 | break; |
2196 | case 27: | |
46bf5051 | 2197 | rettype = init_type (TYPE_CODE_INT, 1, 0, "integer*1", objfile); |
c906108c SS |
2198 | break; |
2199 | case 28: | |
46bf5051 | 2200 | rettype = init_type (TYPE_CODE_INT, 2, 0, "integer*2", objfile); |
c906108c SS |
2201 | break; |
2202 | case 29: | |
46bf5051 | 2203 | rettype = init_type (TYPE_CODE_INT, 4, 0, "integer*4", objfile); |
c906108c SS |
2204 | break; |
2205 | case 30: | |
46bf5051 | 2206 | rettype = init_type (TYPE_CODE_CHAR, 2, 0, "wchar", objfile); |
c906108c SS |
2207 | break; |
2208 | case 31: | |
46bf5051 | 2209 | rettype = init_type (TYPE_CODE_INT, 8, 0, "long long", objfile); |
c906108c SS |
2210 | break; |
2211 | case 32: | |
2212 | rettype = init_type (TYPE_CODE_INT, 8, TYPE_FLAG_UNSIGNED, | |
46bf5051 | 2213 | "unsigned long long", objfile); |
c906108c SS |
2214 | break; |
2215 | case 33: | |
2216 | rettype = init_type (TYPE_CODE_INT, 8, TYPE_FLAG_UNSIGNED, | |
46bf5051 | 2217 | "logical*8", objfile); |
c906108c SS |
2218 | break; |
2219 | case 34: | |
46bf5051 | 2220 | rettype = init_type (TYPE_CODE_INT, 8, 0, "integer*8", objfile); |
c906108c SS |
2221 | break; |
2222 | } | |
2223 | negative_types[-typenum] = rettype; | |
2224 | return rettype; | |
2225 | } | |
2226 | \f | |
2227 | /* This page contains subroutines of read_type. */ | |
2228 | ||
0d5cff50 DE |
2229 | /* Wrapper around method_name_from_physname to flag a complaint |
2230 | if there is an error. */ | |
de17c821 | 2231 | |
0d5cff50 DE |
2232 | static char * |
2233 | stabs_method_name_from_physname (const char *physname) | |
de17c821 DJ |
2234 | { |
2235 | char *method_name; | |
2236 | ||
2237 | method_name = method_name_from_physname (physname); | |
2238 | ||
2239 | if (method_name == NULL) | |
c263362b DJ |
2240 | { |
2241 | complaint (&symfile_complaints, | |
e2e0b3e5 | 2242 | _("Method has bad physname %s\n"), physname); |
0d5cff50 | 2243 | return NULL; |
c263362b | 2244 | } |
de17c821 | 2245 | |
0d5cff50 | 2246 | return method_name; |
de17c821 DJ |
2247 | } |
2248 | ||
c906108c SS |
2249 | /* Read member function stabs info for C++ classes. The form of each member |
2250 | function data is: | |
2251 | ||
c5aa993b | 2252 | NAME :: TYPENUM[=type definition] ARGS : PHYSNAME ; |
c906108c SS |
2253 | |
2254 | An example with two member functions is: | |
2255 | ||
c5aa993b | 2256 | afunc1::20=##15;:i;2A.;afunc2::20:i;2A.; |
c906108c SS |
2257 | |
2258 | For the case of overloaded operators, the format is op$::*.funcs, where | |
2259 | $ is the CPLUS_MARKER (usually '$'), `*' holds the place for an operator | |
2260 | name (such as `+=') and `.' marks the end of the operator name. | |
2261 | ||
2262 | Returns 1 for success, 0 for failure. */ | |
2263 | ||
2264 | static int | |
fba45db2 KB |
2265 | read_member_functions (struct field_info *fip, char **pp, struct type *type, |
2266 | struct objfile *objfile) | |
c906108c SS |
2267 | { |
2268 | int nfn_fields = 0; | |
2269 | int length = 0; | |
c906108c SS |
2270 | int i; |
2271 | struct next_fnfield | |
2272 | { | |
2273 | struct next_fnfield *next; | |
2274 | struct fn_field fn_field; | |
c5aa993b JM |
2275 | } |
2276 | *sublist; | |
c906108c SS |
2277 | struct type *look_ahead_type; |
2278 | struct next_fnfieldlist *new_fnlist; | |
2279 | struct next_fnfield *new_sublist; | |
2280 | char *main_fn_name; | |
52f0bd74 | 2281 | char *p; |
c5aa993b | 2282 | |
c906108c | 2283 | /* Process each list until we find something that is not a member function |
c378eb4e | 2284 | or find the end of the functions. */ |
c906108c SS |
2285 | |
2286 | while (**pp != ';') | |
2287 | { | |
2288 | /* We should be positioned at the start of the function name. | |
c5aa993b | 2289 | Scan forward to find the first ':' and if it is not the |
c378eb4e | 2290 | first of a "::" delimiter, then this is not a member function. */ |
c906108c SS |
2291 | p = *pp; |
2292 | while (*p != ':') | |
2293 | { | |
2294 | p++; | |
2295 | } | |
2296 | if (p[1] != ':') | |
2297 | { | |
2298 | break; | |
2299 | } | |
2300 | ||
2301 | sublist = NULL; | |
2302 | look_ahead_type = NULL; | |
2303 | length = 0; | |
c5aa993b | 2304 | |
c906108c SS |
2305 | new_fnlist = (struct next_fnfieldlist *) |
2306 | xmalloc (sizeof (struct next_fnfieldlist)); | |
b8c9b27d | 2307 | make_cleanup (xfree, new_fnlist); |
c906108c | 2308 | memset (new_fnlist, 0, sizeof (struct next_fnfieldlist)); |
c5aa993b | 2309 | |
c906108c SS |
2310 | if ((*pp)[0] == 'o' && (*pp)[1] == 'p' && is_cplus_marker ((*pp)[2])) |
2311 | { | |
2312 | /* This is a completely wierd case. In order to stuff in the | |
2313 | names that might contain colons (the usual name delimiter), | |
2314 | Mike Tiemann defined a different name format which is | |
2315 | signalled if the identifier is "op$". In that case, the | |
2316 | format is "op$::XXXX." where XXXX is the name. This is | |
2317 | used for names like "+" or "=". YUUUUUUUK! FIXME! */ | |
2318 | /* This lets the user type "break operator+". | |
2319 | We could just put in "+" as the name, but that wouldn't | |
2320 | work for "*". */ | |
8343f86c | 2321 | static char opname[32] = "op$"; |
c906108c | 2322 | char *o = opname + 3; |
c5aa993b | 2323 | |
c906108c SS |
2324 | /* Skip past '::'. */ |
2325 | *pp = p + 2; | |
2326 | ||
2327 | STABS_CONTINUE (pp, objfile); | |
2328 | p = *pp; | |
2329 | while (*p != '.') | |
2330 | { | |
2331 | *o++ = *p++; | |
2332 | } | |
2333 | main_fn_name = savestring (opname, o - opname); | |
2334 | /* Skip past '.' */ | |
2335 | *pp = p + 1; | |
2336 | } | |
2337 | else | |
2338 | { | |
2339 | main_fn_name = savestring (*pp, p - *pp); | |
2340 | /* Skip past '::'. */ | |
2341 | *pp = p + 2; | |
2342 | } | |
c5aa993b JM |
2343 | new_fnlist->fn_fieldlist.name = main_fn_name; |
2344 | ||
c906108c SS |
2345 | do |
2346 | { | |
2347 | new_sublist = | |
2348 | (struct next_fnfield *) xmalloc (sizeof (struct next_fnfield)); | |
b8c9b27d | 2349 | make_cleanup (xfree, new_sublist); |
c906108c | 2350 | memset (new_sublist, 0, sizeof (struct next_fnfield)); |
c5aa993b | 2351 | |
c906108c SS |
2352 | /* Check for and handle cretinous dbx symbol name continuation! */ |
2353 | if (look_ahead_type == NULL) | |
2354 | { | |
c378eb4e | 2355 | /* Normal case. */ |
c906108c | 2356 | STABS_CONTINUE (pp, objfile); |
c5aa993b JM |
2357 | |
2358 | new_sublist->fn_field.type = read_type (pp, objfile); | |
c906108c SS |
2359 | if (**pp != ':') |
2360 | { | |
2361 | /* Invalid symtab info for member function. */ | |
2362 | return 0; | |
2363 | } | |
2364 | } | |
2365 | else | |
2366 | { | |
2367 | /* g++ version 1 kludge */ | |
c5aa993b | 2368 | new_sublist->fn_field.type = look_ahead_type; |
c906108c SS |
2369 | look_ahead_type = NULL; |
2370 | } | |
c5aa993b | 2371 | |
c906108c SS |
2372 | (*pp)++; |
2373 | p = *pp; | |
2374 | while (*p != ';') | |
2375 | { | |
2376 | p++; | |
2377 | } | |
c5aa993b | 2378 | |
c378eb4e | 2379 | /* If this is just a stub, then we don't have the real name here. */ |
c906108c | 2380 | |
74a9bb82 | 2381 | if (TYPE_STUB (new_sublist->fn_field.type)) |
c906108c | 2382 | { |
c5aa993b JM |
2383 | if (!TYPE_DOMAIN_TYPE (new_sublist->fn_field.type)) |
2384 | TYPE_DOMAIN_TYPE (new_sublist->fn_field.type) = type; | |
2385 | new_sublist->fn_field.is_stub = 1; | |
c906108c | 2386 | } |
c5aa993b | 2387 | new_sublist->fn_field.physname = savestring (*pp, p - *pp); |
c906108c | 2388 | *pp = p + 1; |
c5aa993b | 2389 | |
c906108c SS |
2390 | /* Set this member function's visibility fields. */ |
2391 | switch (*(*pp)++) | |
2392 | { | |
c5aa993b JM |
2393 | case VISIBILITY_PRIVATE: |
2394 | new_sublist->fn_field.is_private = 1; | |
2395 | break; | |
2396 | case VISIBILITY_PROTECTED: | |
2397 | new_sublist->fn_field.is_protected = 1; | |
2398 | break; | |
c906108c | 2399 | } |
c5aa993b | 2400 | |
c906108c SS |
2401 | STABS_CONTINUE (pp, objfile); |
2402 | switch (**pp) | |
2403 | { | |
c378eb4e | 2404 | case 'A': /* Normal functions. */ |
c5aa993b JM |
2405 | new_sublist->fn_field.is_const = 0; |
2406 | new_sublist->fn_field.is_volatile = 0; | |
2407 | (*pp)++; | |
2408 | break; | |
c378eb4e | 2409 | case 'B': /* `const' member functions. */ |
c5aa993b JM |
2410 | new_sublist->fn_field.is_const = 1; |
2411 | new_sublist->fn_field.is_volatile = 0; | |
2412 | (*pp)++; | |
2413 | break; | |
c378eb4e | 2414 | case 'C': /* `volatile' member function. */ |
c5aa993b JM |
2415 | new_sublist->fn_field.is_const = 0; |
2416 | new_sublist->fn_field.is_volatile = 1; | |
2417 | (*pp)++; | |
2418 | break; | |
c378eb4e | 2419 | case 'D': /* `const volatile' member function. */ |
c5aa993b JM |
2420 | new_sublist->fn_field.is_const = 1; |
2421 | new_sublist->fn_field.is_volatile = 1; | |
2422 | (*pp)++; | |
2423 | break; | |
3e43a32a | 2424 | case '*': /* File compiled with g++ version 1 -- |
c378eb4e | 2425 | no info. */ |
c5aa993b JM |
2426 | case '?': |
2427 | case '.': | |
2428 | break; | |
2429 | default: | |
23136709 | 2430 | complaint (&symfile_complaints, |
3e43a32a MS |
2431 | _("const/volatile indicator missing, got '%c'"), |
2432 | **pp); | |
c5aa993b | 2433 | break; |
c906108c | 2434 | } |
c5aa993b | 2435 | |
c906108c SS |
2436 | switch (*(*pp)++) |
2437 | { | |
c5aa993b | 2438 | case '*': |
c906108c SS |
2439 | { |
2440 | int nbits; | |
c5aa993b | 2441 | /* virtual member function, followed by index. |
c906108c SS |
2442 | The sign bit is set to distinguish pointers-to-methods |
2443 | from virtual function indicies. Since the array is | |
2444 | in words, the quantity must be shifted left by 1 | |
2445 | on 16 bit machine, and by 2 on 32 bit machine, forcing | |
2446 | the sign bit out, and usable as a valid index into | |
2447 | the array. Remove the sign bit here. */ | |
c5aa993b | 2448 | new_sublist->fn_field.voffset = |
94e10a22 | 2449 | (0x7fffffff & read_huge_number (pp, ';', &nbits, 0)) + 2; |
c906108c SS |
2450 | if (nbits != 0) |
2451 | return 0; | |
c5aa993b | 2452 | |
c906108c SS |
2453 | STABS_CONTINUE (pp, objfile); |
2454 | if (**pp == ';' || **pp == '\0') | |
2455 | { | |
2456 | /* Must be g++ version 1. */ | |
c5aa993b | 2457 | new_sublist->fn_field.fcontext = 0; |
c906108c SS |
2458 | } |
2459 | else | |
2460 | { | |
2461 | /* Figure out from whence this virtual function came. | |
2462 | It may belong to virtual function table of | |
2463 | one of its baseclasses. */ | |
2464 | look_ahead_type = read_type (pp, objfile); | |
2465 | if (**pp == ':') | |
2466 | { | |
c378eb4e | 2467 | /* g++ version 1 overloaded methods. */ |
c906108c SS |
2468 | } |
2469 | else | |
2470 | { | |
c5aa993b | 2471 | new_sublist->fn_field.fcontext = look_ahead_type; |
c906108c SS |
2472 | if (**pp != ';') |
2473 | { | |
2474 | return 0; | |
2475 | } | |
2476 | else | |
2477 | { | |
2478 | ++*pp; | |
2479 | } | |
2480 | look_ahead_type = NULL; | |
2481 | } | |
2482 | } | |
2483 | break; | |
2484 | } | |
c5aa993b JM |
2485 | case '?': |
2486 | /* static member function. */ | |
4ea09c10 PS |
2487 | { |
2488 | int slen = strlen (main_fn_name); | |
2489 | ||
2490 | new_sublist->fn_field.voffset = VOFFSET_STATIC; | |
2491 | ||
2492 | /* For static member functions, we can't tell if they | |
2493 | are stubbed, as they are put out as functions, and not as | |
2494 | methods. | |
2495 | GCC v2 emits the fully mangled name if | |
2496 | dbxout.c:flag_minimal_debug is not set, so we have to | |
2497 | detect a fully mangled physname here and set is_stub | |
2498 | accordingly. Fully mangled physnames in v2 start with | |
2499 | the member function name, followed by two underscores. | |
2500 | GCC v3 currently always emits stubbed member functions, | |
2501 | but with fully mangled physnames, which start with _Z. */ | |
2502 | if (!(strncmp (new_sublist->fn_field.physname, | |
2503 | main_fn_name, slen) == 0 | |
2504 | && new_sublist->fn_field.physname[slen] == '_' | |
2505 | && new_sublist->fn_field.physname[slen + 1] == '_')) | |
2506 | { | |
2507 | new_sublist->fn_field.is_stub = 1; | |
2508 | } | |
2509 | break; | |
2510 | } | |
c5aa993b JM |
2511 | |
2512 | default: | |
2513 | /* error */ | |
23136709 | 2514 | complaint (&symfile_complaints, |
3e43a32a MS |
2515 | _("member function type missing, got '%c'"), |
2516 | (*pp)[-1]); | |
c5aa993b JM |
2517 | /* Fall through into normal member function. */ |
2518 | ||
2519 | case '.': | |
2520 | /* normal member function. */ | |
2521 | new_sublist->fn_field.voffset = 0; | |
2522 | new_sublist->fn_field.fcontext = 0; | |
2523 | break; | |
c906108c | 2524 | } |
c5aa993b JM |
2525 | |
2526 | new_sublist->next = sublist; | |
c906108c SS |
2527 | sublist = new_sublist; |
2528 | length++; | |
2529 | STABS_CONTINUE (pp, objfile); | |
2530 | } | |
2531 | while (**pp != ';' && **pp != '\0'); | |
c5aa993b | 2532 | |
c906108c | 2533 | (*pp)++; |
0c867556 | 2534 | STABS_CONTINUE (pp, objfile); |
c5aa993b | 2535 | |
0c867556 PS |
2536 | /* Skip GCC 3.X member functions which are duplicates of the callable |
2537 | constructor/destructor. */ | |
6cbbcdfe KS |
2538 | if (strcmp_iw (main_fn_name, "__base_ctor ") == 0 |
2539 | || strcmp_iw (main_fn_name, "__base_dtor ") == 0 | |
0c867556 | 2540 | || strcmp (main_fn_name, "__deleting_dtor") == 0) |
c906108c | 2541 | { |
0c867556 | 2542 | xfree (main_fn_name); |
c906108c | 2543 | } |
0c867556 PS |
2544 | else |
2545 | { | |
de17c821 DJ |
2546 | int has_stub = 0; |
2547 | int has_destructor = 0, has_other = 0; | |
2548 | int is_v3 = 0; | |
2549 | struct next_fnfield *tmp_sublist; | |
2550 | ||
2551 | /* Various versions of GCC emit various mostly-useless | |
2552 | strings in the name field for special member functions. | |
2553 | ||
2554 | For stub methods, we need to defer correcting the name | |
2555 | until we are ready to unstub the method, because the current | |
2556 | name string is used by gdb_mangle_name. The only stub methods | |
2557 | of concern here are GNU v2 operators; other methods have their | |
2558 | names correct (see caveat below). | |
2559 | ||
2560 | For non-stub methods, in GNU v3, we have a complete physname. | |
2561 | Therefore we can safely correct the name now. This primarily | |
2562 | affects constructors and destructors, whose name will be | |
2563 | __comp_ctor or __comp_dtor instead of Foo or ~Foo. Cast | |
2564 | operators will also have incorrect names; for instance, | |
2565 | "operator int" will be named "operator i" (i.e. the type is | |
2566 | mangled). | |
2567 | ||
2568 | For non-stub methods in GNU v2, we have no easy way to | |
2569 | know if we have a complete physname or not. For most | |
2570 | methods the result depends on the platform (if CPLUS_MARKER | |
2571 | can be `$' or `.', it will use minimal debug information, or | |
2572 | otherwise the full physname will be included). | |
2573 | ||
2574 | Rather than dealing with this, we take a different approach. | |
2575 | For v3 mangled names, we can use the full physname; for v2, | |
2576 | we use cplus_demangle_opname (which is actually v2 specific), | |
2577 | because the only interesting names are all operators - once again | |
2578 | barring the caveat below. Skip this process if any method in the | |
2579 | group is a stub, to prevent our fouling up the workings of | |
2580 | gdb_mangle_name. | |
2581 | ||
2582 | The caveat: GCC 2.95.x (and earlier?) put constructors and | |
2583 | destructors in the same method group. We need to split this | |
2584 | into two groups, because they should have different names. | |
2585 | So for each method group we check whether it contains both | |
2586 | routines whose physname appears to be a destructor (the physnames | |
2587 | for and destructors are always provided, due to quirks in v2 | |
2588 | mangling) and routines whose physname does not appear to be a | |
2589 | destructor. If so then we break up the list into two halves. | |
2590 | Even if the constructors and destructors aren't in the same group | |
2591 | the destructor will still lack the leading tilde, so that also | |
2592 | needs to be fixed. | |
2593 | ||
2594 | So, to summarize what we expect and handle here: | |
2595 | ||
2596 | Given Given Real Real Action | |
2597 | method name physname physname method name | |
2598 | ||
2599 | __opi [none] __opi__3Foo operator int opname | |
3e43a32a MS |
2600 | [now or later] |
2601 | Foo _._3Foo _._3Foo ~Foo separate and | |
de17c821 DJ |
2602 | rename |
2603 | operator i _ZN3FoocviEv _ZN3FoocviEv operator int demangle | |
2604 | __comp_ctor _ZN3FooC1ERKS_ _ZN3FooC1ERKS_ Foo demangle | |
2605 | */ | |
2606 | ||
2607 | tmp_sublist = sublist; | |
2608 | while (tmp_sublist != NULL) | |
2609 | { | |
2610 | if (tmp_sublist->fn_field.is_stub) | |
2611 | has_stub = 1; | |
2612 | if (tmp_sublist->fn_field.physname[0] == '_' | |
2613 | && tmp_sublist->fn_field.physname[1] == 'Z') | |
2614 | is_v3 = 1; | |
2615 | ||
2616 | if (is_destructor_name (tmp_sublist->fn_field.physname)) | |
2617 | has_destructor++; | |
2618 | else | |
2619 | has_other++; | |
2620 | ||
2621 | tmp_sublist = tmp_sublist->next; | |
2622 | } | |
2623 | ||
2624 | if (has_destructor && has_other) | |
2625 | { | |
2626 | struct next_fnfieldlist *destr_fnlist; | |
2627 | struct next_fnfield *last_sublist; | |
2628 | ||
2629 | /* Create a new fn_fieldlist for the destructors. */ | |
2630 | ||
2631 | destr_fnlist = (struct next_fnfieldlist *) | |
2632 | xmalloc (sizeof (struct next_fnfieldlist)); | |
2633 | make_cleanup (xfree, destr_fnlist); | |
2634 | memset (destr_fnlist, 0, sizeof (struct next_fnfieldlist)); | |
2635 | destr_fnlist->fn_fieldlist.name | |
48cb83fd JK |
2636 | = obconcat (&objfile->objfile_obstack, "~", |
2637 | new_fnlist->fn_fieldlist.name, (char *) NULL); | |
de17c821 DJ |
2638 | |
2639 | destr_fnlist->fn_fieldlist.fn_fields = (struct fn_field *) | |
b99607ea | 2640 | obstack_alloc (&objfile->objfile_obstack, |
de17c821 DJ |
2641 | sizeof (struct fn_field) * has_destructor); |
2642 | memset (destr_fnlist->fn_fieldlist.fn_fields, 0, | |
2643 | sizeof (struct fn_field) * has_destructor); | |
2644 | tmp_sublist = sublist; | |
2645 | last_sublist = NULL; | |
2646 | i = 0; | |
2647 | while (tmp_sublist != NULL) | |
2648 | { | |
2649 | if (!is_destructor_name (tmp_sublist->fn_field.physname)) | |
2650 | { | |
2651 | tmp_sublist = tmp_sublist->next; | |
2652 | continue; | |
2653 | } | |
2654 | ||
2655 | destr_fnlist->fn_fieldlist.fn_fields[i++] | |
2656 | = tmp_sublist->fn_field; | |
2657 | if (last_sublist) | |
2658 | last_sublist->next = tmp_sublist->next; | |
2659 | else | |
2660 | sublist = tmp_sublist->next; | |
2661 | last_sublist = tmp_sublist; | |
2662 | tmp_sublist = tmp_sublist->next; | |
2663 | } | |
2664 | ||
2665 | destr_fnlist->fn_fieldlist.length = has_destructor; | |
2666 | destr_fnlist->next = fip->fnlist; | |
2667 | fip->fnlist = destr_fnlist; | |
2668 | nfn_fields++; | |
de17c821 DJ |
2669 | length -= has_destructor; |
2670 | } | |
2671 | else if (is_v3) | |
2672 | { | |
2673 | /* v3 mangling prevents the use of abbreviated physnames, | |
2674 | so we can do this here. There are stubbed methods in v3 | |
2675 | only: | |
2676 | - in -gstabs instead of -gstabs+ | |
2677 | - or for static methods, which are output as a function type | |
2678 | instead of a method type. */ | |
0d5cff50 DE |
2679 | char *new_method_name = |
2680 | stabs_method_name_from_physname (sublist->fn_field.physname); | |
de17c821 | 2681 | |
0d5cff50 DE |
2682 | if (new_method_name != NULL |
2683 | && strcmp (new_method_name, | |
2684 | new_fnlist->fn_fieldlist.name) != 0) | |
2685 | { | |
2686 | new_fnlist->fn_fieldlist.name = new_method_name; | |
2687 | xfree (main_fn_name); | |
2688 | } | |
2689 | else | |
2690 | xfree (new_method_name); | |
de17c821 DJ |
2691 | } |
2692 | else if (has_destructor && new_fnlist->fn_fieldlist.name[0] != '~') | |
2693 | { | |
1754f103 | 2694 | new_fnlist->fn_fieldlist.name = |
0d5cff50 DE |
2695 | obconcat (&objfile->objfile_obstack, |
2696 | "~", main_fn_name, (char *)NULL); | |
de17c821 DJ |
2697 | xfree (main_fn_name); |
2698 | } | |
2699 | else if (!has_stub) | |
2700 | { | |
2701 | char dem_opname[256]; | |
2702 | int ret; | |
433759f7 | 2703 | |
de17c821 DJ |
2704 | ret = cplus_demangle_opname (new_fnlist->fn_fieldlist.name, |
2705 | dem_opname, DMGL_ANSI); | |
2706 | if (!ret) | |
2707 | ret = cplus_demangle_opname (new_fnlist->fn_fieldlist.name, | |
2708 | dem_opname, 0); | |
2709 | if (ret) | |
2710 | new_fnlist->fn_fieldlist.name | |
10f0c4bb TT |
2711 | = obstack_copy0 (&objfile->objfile_obstack, |
2712 | dem_opname, strlen (dem_opname)); | |
0d5cff50 | 2713 | xfree (main_fn_name); |
de17c821 DJ |
2714 | } |
2715 | ||
0c867556 | 2716 | new_fnlist->fn_fieldlist.fn_fields = (struct fn_field *) |
b99607ea | 2717 | obstack_alloc (&objfile->objfile_obstack, |
0c867556 PS |
2718 | sizeof (struct fn_field) * length); |
2719 | memset (new_fnlist->fn_fieldlist.fn_fields, 0, | |
2720 | sizeof (struct fn_field) * length); | |
2721 | for (i = length; (i--, sublist); sublist = sublist->next) | |
2722 | { | |
2723 | new_fnlist->fn_fieldlist.fn_fields[i] = sublist->fn_field; | |
2724 | } | |
c5aa993b | 2725 | |
0c867556 PS |
2726 | new_fnlist->fn_fieldlist.length = length; |
2727 | new_fnlist->next = fip->fnlist; | |
2728 | fip->fnlist = new_fnlist; | |
2729 | nfn_fields++; | |
0c867556 | 2730 | } |
c906108c SS |
2731 | } |
2732 | ||
2733 | if (nfn_fields) | |
2734 | { | |
2735 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
2736 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
2737 | TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * nfn_fields); | |
2738 | memset (TYPE_FN_FIELDLISTS (type), 0, | |
2739 | sizeof (struct fn_fieldlist) * nfn_fields); | |
2740 | TYPE_NFN_FIELDS (type) = nfn_fields; | |
c906108c SS |
2741 | } |
2742 | ||
2743 | return 1; | |
2744 | } | |
2745 | ||
2746 | /* Special GNU C++ name. | |
2747 | ||
2748 | Returns 1 for success, 0 for failure. "failure" means that we can't | |
2749 | keep parsing and it's time for error_type(). */ | |
2750 | ||
2751 | static int | |
fba45db2 KB |
2752 | read_cpp_abbrev (struct field_info *fip, char **pp, struct type *type, |
2753 | struct objfile *objfile) | |
c906108c | 2754 | { |
52f0bd74 | 2755 | char *p; |
0d5cff50 | 2756 | const char *name; |
c906108c SS |
2757 | char cpp_abbrev; |
2758 | struct type *context; | |
2759 | ||
2760 | p = *pp; | |
2761 | if (*++p == 'v') | |
2762 | { | |
2763 | name = NULL; | |
2764 | cpp_abbrev = *++p; | |
2765 | ||
2766 | *pp = p + 1; | |
2767 | ||
2768 | /* At this point, *pp points to something like "22:23=*22...", | |
c5aa993b JM |
2769 | where the type number before the ':' is the "context" and |
2770 | everything after is a regular type definition. Lookup the | |
c378eb4e | 2771 | type, find it's name, and construct the field name. */ |
c906108c SS |
2772 | |
2773 | context = read_type (pp, objfile); | |
2774 | ||
2775 | switch (cpp_abbrev) | |
2776 | { | |
c5aa993b | 2777 | case 'f': /* $vf -- a virtual function table pointer */ |
c2bd2ed9 JB |
2778 | name = type_name_no_tag (context); |
2779 | if (name == NULL) | |
433759f7 MS |
2780 | { |
2781 | name = ""; | |
2782 | } | |
48cb83fd JK |
2783 | fip->list->field.name = obconcat (&objfile->objfile_obstack, |
2784 | vptr_name, name, (char *) NULL); | |
c5aa993b | 2785 | break; |
c906108c | 2786 | |
c5aa993b JM |
2787 | case 'b': /* $vb -- a virtual bsomethingorother */ |
2788 | name = type_name_no_tag (context); | |
2789 | if (name == NULL) | |
2790 | { | |
23136709 | 2791 | complaint (&symfile_complaints, |
3e43a32a MS |
2792 | _("C++ abbreviated type name " |
2793 | "unknown at symtab pos %d"), | |
23136709 | 2794 | symnum); |
c5aa993b JM |
2795 | name = "FOO"; |
2796 | } | |
48cb83fd JK |
2797 | fip->list->field.name = obconcat (&objfile->objfile_obstack, vb_name, |
2798 | name, (char *) NULL); | |
c5aa993b | 2799 | break; |
c906108c | 2800 | |
c5aa993b | 2801 | default: |
23136709 | 2802 | invalid_cpp_abbrev_complaint (*pp); |
48cb83fd JK |
2803 | fip->list->field.name = obconcat (&objfile->objfile_obstack, |
2804 | "INVALID_CPLUSPLUS_ABBREV", | |
2805 | (char *) NULL); | |
c5aa993b | 2806 | break; |
c906108c SS |
2807 | } |
2808 | ||
2809 | /* At this point, *pp points to the ':'. Skip it and read the | |
c378eb4e | 2810 | field type. */ |
c906108c SS |
2811 | |
2812 | p = ++(*pp); | |
2813 | if (p[-1] != ':') | |
2814 | { | |
23136709 | 2815 | invalid_cpp_abbrev_complaint (*pp); |
c906108c SS |
2816 | return 0; |
2817 | } | |
2818 | fip->list->field.type = read_type (pp, objfile); | |
2819 | if (**pp == ',') | |
c5aa993b | 2820 | (*pp)++; /* Skip the comma. */ |
c906108c SS |
2821 | else |
2822 | return 0; | |
2823 | ||
2824 | { | |
2825 | int nbits; | |
433759f7 | 2826 | |
f41f5e61 PA |
2827 | SET_FIELD_BITPOS (fip->list->field, |
2828 | read_huge_number (pp, ';', &nbits, 0)); | |
c906108c SS |
2829 | if (nbits != 0) |
2830 | return 0; | |
2831 | } | |
2832 | /* This field is unpacked. */ | |
2833 | FIELD_BITSIZE (fip->list->field) = 0; | |
2834 | fip->list->visibility = VISIBILITY_PRIVATE; | |
2835 | } | |
2836 | else | |
2837 | { | |
23136709 | 2838 | invalid_cpp_abbrev_complaint (*pp); |
c906108c | 2839 | /* We have no idea what syntax an unrecognized abbrev would have, so |
c5aa993b JM |
2840 | better return 0. If we returned 1, we would need to at least advance |
2841 | *pp to avoid an infinite loop. */ | |
c906108c SS |
2842 | return 0; |
2843 | } | |
2844 | return 1; | |
2845 | } | |
2846 | ||
2847 | static void | |
fba45db2 KB |
2848 | read_one_struct_field (struct field_info *fip, char **pp, char *p, |
2849 | struct type *type, struct objfile *objfile) | |
c906108c | 2850 | { |
5e2b427d UW |
2851 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
2852 | ||
41989fcd | 2853 | fip->list->field.name = |
10f0c4bb | 2854 | obstack_copy0 (&objfile->objfile_obstack, *pp, p - *pp); |
c906108c SS |
2855 | *pp = p + 1; |
2856 | ||
c378eb4e | 2857 | /* This means we have a visibility for a field coming. */ |
c906108c SS |
2858 | if (**pp == '/') |
2859 | { | |
2860 | (*pp)++; | |
c5aa993b | 2861 | fip->list->visibility = *(*pp)++; |
c906108c SS |
2862 | } |
2863 | else | |
2864 | { | |
2865 | /* normal dbx-style format, no explicit visibility */ | |
c5aa993b | 2866 | fip->list->visibility = VISIBILITY_PUBLIC; |
c906108c SS |
2867 | } |
2868 | ||
c5aa993b | 2869 | fip->list->field.type = read_type (pp, objfile); |
c906108c SS |
2870 | if (**pp == ':') |
2871 | { | |
2872 | p = ++(*pp); | |
2873 | #if 0 | |
c378eb4e | 2874 | /* Possible future hook for nested types. */ |
c906108c SS |
2875 | if (**pp == '!') |
2876 | { | |
c5aa993b | 2877 | fip->list->field.bitpos = (long) -2; /* nested type */ |
c906108c SS |
2878 | p = ++(*pp); |
2879 | } | |
c5aa993b JM |
2880 | else |
2881 | ...; | |
c906108c | 2882 | #endif |
c5aa993b | 2883 | while (*p != ';') |
c906108c SS |
2884 | { |
2885 | p++; | |
2886 | } | |
2887 | /* Static class member. */ | |
2888 | SET_FIELD_PHYSNAME (fip->list->field, savestring (*pp, p - *pp)); | |
2889 | *pp = p + 1; | |
2890 | return; | |
2891 | } | |
2892 | else if (**pp != ',') | |
2893 | { | |
2894 | /* Bad structure-type format. */ | |
23136709 | 2895 | stabs_general_complaint ("bad structure-type format"); |
c906108c SS |
2896 | return; |
2897 | } | |
2898 | ||
2899 | (*pp)++; /* Skip the comma. */ | |
2900 | ||
2901 | { | |
2902 | int nbits; | |
433759f7 | 2903 | |
f41f5e61 PA |
2904 | SET_FIELD_BITPOS (fip->list->field, |
2905 | read_huge_number (pp, ',', &nbits, 0)); | |
c906108c SS |
2906 | if (nbits != 0) |
2907 | { | |
23136709 | 2908 | stabs_general_complaint ("bad structure-type format"); |
c906108c SS |
2909 | return; |
2910 | } | |
94e10a22 | 2911 | FIELD_BITSIZE (fip->list->field) = read_huge_number (pp, ';', &nbits, 0); |
c906108c SS |
2912 | if (nbits != 0) |
2913 | { | |
23136709 | 2914 | stabs_general_complaint ("bad structure-type format"); |
c906108c SS |
2915 | return; |
2916 | } | |
2917 | } | |
2918 | ||
2919 | if (FIELD_BITPOS (fip->list->field) == 0 | |
2920 | && FIELD_BITSIZE (fip->list->field) == 0) | |
2921 | { | |
2922 | /* This can happen in two cases: (1) at least for gcc 2.4.5 or so, | |
c5aa993b JM |
2923 | it is a field which has been optimized out. The correct stab for |
2924 | this case is to use VISIBILITY_IGNORE, but that is a recent | |
2925 | invention. (2) It is a 0-size array. For example | |
e2e0b3e5 | 2926 | union { int num; char str[0]; } foo. Printing _("<no value>" for |
c5aa993b JM |
2927 | str in "p foo" is OK, since foo.str (and thus foo.str[3]) |
2928 | will continue to work, and a 0-size array as a whole doesn't | |
2929 | have any contents to print. | |
2930 | ||
2931 | I suspect this probably could also happen with gcc -gstabs (not | |
2932 | -gstabs+) for static fields, and perhaps other C++ extensions. | |
2933 | Hopefully few people use -gstabs with gdb, since it is intended | |
2934 | for dbx compatibility. */ | |
c906108c SS |
2935 | |
2936 | /* Ignore this field. */ | |
c5aa993b | 2937 | fip->list->visibility = VISIBILITY_IGNORE; |
c906108c SS |
2938 | } |
2939 | else | |
2940 | { | |
2941 | /* Detect an unpacked field and mark it as such. | |
c5aa993b JM |
2942 | dbx gives a bit size for all fields. |
2943 | Note that forward refs cannot be packed, | |
2944 | and treat enums as if they had the width of ints. */ | |
c906108c SS |
2945 | |
2946 | struct type *field_type = check_typedef (FIELD_TYPE (fip->list->field)); | |
2947 | ||
2948 | if (TYPE_CODE (field_type) != TYPE_CODE_INT | |
2949 | && TYPE_CODE (field_type) != TYPE_CODE_RANGE | |
2950 | && TYPE_CODE (field_type) != TYPE_CODE_BOOL | |
2951 | && TYPE_CODE (field_type) != TYPE_CODE_ENUM) | |
2952 | { | |
2953 | FIELD_BITSIZE (fip->list->field) = 0; | |
2954 | } | |
c5aa993b | 2955 | if ((FIELD_BITSIZE (fip->list->field) |
c906108c SS |
2956 | == TARGET_CHAR_BIT * TYPE_LENGTH (field_type) |
2957 | || (TYPE_CODE (field_type) == TYPE_CODE_ENUM | |
9a76efb6 | 2958 | && FIELD_BITSIZE (fip->list->field) |
5e2b427d | 2959 | == gdbarch_int_bit (gdbarch)) |
c5aa993b | 2960 | ) |
c906108c SS |
2961 | && |
2962 | FIELD_BITPOS (fip->list->field) % 8 == 0) | |
2963 | { | |
2964 | FIELD_BITSIZE (fip->list->field) = 0; | |
2965 | } | |
2966 | } | |
2967 | } | |
2968 | ||
2969 | ||
2970 | /* Read struct or class data fields. They have the form: | |
2971 | ||
c5aa993b | 2972 | NAME : [VISIBILITY] TYPENUM , BITPOS , BITSIZE ; |
c906108c SS |
2973 | |
2974 | At the end, we see a semicolon instead of a field. | |
2975 | ||
2976 | In C++, this may wind up being NAME:?TYPENUM:PHYSNAME; for | |
2977 | a static field. | |
2978 | ||
2979 | The optional VISIBILITY is one of: | |
2980 | ||
c5aa993b JM |
2981 | '/0' (VISIBILITY_PRIVATE) |
2982 | '/1' (VISIBILITY_PROTECTED) | |
2983 | '/2' (VISIBILITY_PUBLIC) | |
2984 | '/9' (VISIBILITY_IGNORE) | |
c906108c SS |
2985 | |
2986 | or nothing, for C style fields with public visibility. | |
2987 | ||
2988 | Returns 1 for success, 0 for failure. */ | |
2989 | ||
2990 | static int | |
fba45db2 KB |
2991 | read_struct_fields (struct field_info *fip, char **pp, struct type *type, |
2992 | struct objfile *objfile) | |
c906108c | 2993 | { |
52f0bd74 | 2994 | char *p; |
c906108c SS |
2995 | struct nextfield *new; |
2996 | ||
2997 | /* We better set p right now, in case there are no fields at all... */ | |
2998 | ||
2999 | p = *pp; | |
3000 | ||
3001 | /* Read each data member type until we find the terminating ';' at the end of | |
3002 | the data member list, or break for some other reason such as finding the | |
c378eb4e | 3003 | start of the member function list. */ |
fedbd091 | 3004 | /* Stab string for structure/union does not end with two ';' in |
c378eb4e | 3005 | SUN C compiler 5.3 i.e. F6U2, hence check for end of string. */ |
c906108c | 3006 | |
fedbd091 | 3007 | while (**pp != ';' && **pp != '\0') |
c906108c | 3008 | { |
c906108c SS |
3009 | STABS_CONTINUE (pp, objfile); |
3010 | /* Get space to record the next field's data. */ | |
3011 | new = (struct nextfield *) xmalloc (sizeof (struct nextfield)); | |
b8c9b27d | 3012 | make_cleanup (xfree, new); |
c906108c | 3013 | memset (new, 0, sizeof (struct nextfield)); |
c5aa993b JM |
3014 | new->next = fip->list; |
3015 | fip->list = new; | |
c906108c SS |
3016 | |
3017 | /* Get the field name. */ | |
3018 | p = *pp; | |
3019 | ||
3020 | /* If is starts with CPLUS_MARKER it is a special abbreviation, | |
c5aa993b JM |
3021 | unless the CPLUS_MARKER is followed by an underscore, in |
3022 | which case it is just the name of an anonymous type, which we | |
3023 | should handle like any other type name. */ | |
c906108c SS |
3024 | |
3025 | if (is_cplus_marker (p[0]) && p[1] != '_') | |
3026 | { | |
3027 | if (!read_cpp_abbrev (fip, pp, type, objfile)) | |
3028 | return 0; | |
3029 | continue; | |
3030 | } | |
3031 | ||
3032 | /* Look for the ':' that separates the field name from the field | |
c5aa993b JM |
3033 | values. Data members are delimited by a single ':', while member |
3034 | functions are delimited by a pair of ':'s. When we hit the member | |
c378eb4e | 3035 | functions (if any), terminate scan loop and return. */ |
c906108c | 3036 | |
c5aa993b | 3037 | while (*p != ':' && *p != '\0') |
c906108c SS |
3038 | { |
3039 | p++; | |
3040 | } | |
3041 | if (*p == '\0') | |
3042 | return 0; | |
3043 | ||
3044 | /* Check to see if we have hit the member functions yet. */ | |
3045 | if (p[1] == ':') | |
3046 | { | |
3047 | break; | |
3048 | } | |
3049 | read_one_struct_field (fip, pp, p, type, objfile); | |
3050 | } | |
3051 | if (p[0] == ':' && p[1] == ':') | |
3052 | { | |
1b831c93 AC |
3053 | /* (the deleted) chill the list of fields: the last entry (at |
3054 | the head) is a partially constructed entry which we now | |
c378eb4e | 3055 | scrub. */ |
c5aa993b | 3056 | fip->list = fip->list->next; |
c906108c SS |
3057 | } |
3058 | return 1; | |
3059 | } | |
9846de1b | 3060 | /* *INDENT-OFF* */ |
c906108c SS |
3061 | /* The stabs for C++ derived classes contain baseclass information which |
3062 | is marked by a '!' character after the total size. This function is | |
3063 | called when we encounter the baseclass marker, and slurps up all the | |
3064 | baseclass information. | |
3065 | ||
3066 | Immediately following the '!' marker is the number of base classes that | |
3067 | the class is derived from, followed by information for each base class. | |
3068 | For each base class, there are two visibility specifiers, a bit offset | |
3069 | to the base class information within the derived class, a reference to | |
3070 | the type for the base class, and a terminating semicolon. | |
3071 | ||
3072 | A typical example, with two base classes, would be "!2,020,19;0264,21;". | |
3073 | ^^ ^ ^ ^ ^ ^ ^ | |
3074 | Baseclass information marker __________________|| | | | | | | | |
3075 | Number of baseclasses __________________________| | | | | | | | |
3076 | Visibility specifiers (2) ________________________| | | | | | | |
3077 | Offset in bits from start of class _________________| | | | | | |
3078 | Type number for base class ___________________________| | | | | |
3079 | Visibility specifiers (2) _______________________________| | | | |
3080 | Offset in bits from start of class ________________________| | | |
3081 | Type number of base class ____________________________________| | |
3082 | ||
3083 | Return 1 for success, 0 for (error-type-inducing) failure. */ | |
9846de1b | 3084 | /* *INDENT-ON* */ |
c906108c | 3085 | |
c5aa993b JM |
3086 | |
3087 | ||
c906108c | 3088 | static int |
fba45db2 KB |
3089 | read_baseclasses (struct field_info *fip, char **pp, struct type *type, |
3090 | struct objfile *objfile) | |
c906108c SS |
3091 | { |
3092 | int i; | |
3093 | struct nextfield *new; | |
3094 | ||
3095 | if (**pp != '!') | |
3096 | { | |
3097 | return 1; | |
3098 | } | |
3099 | else | |
3100 | { | |
c378eb4e | 3101 | /* Skip the '!' baseclass information marker. */ |
c906108c SS |
3102 | (*pp)++; |
3103 | } | |
3104 | ||
3105 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
3106 | { | |
3107 | int nbits; | |
433759f7 | 3108 | |
94e10a22 | 3109 | TYPE_N_BASECLASSES (type) = read_huge_number (pp, ',', &nbits, 0); |
c906108c SS |
3110 | if (nbits != 0) |
3111 | return 0; | |
3112 | } | |
3113 | ||
3114 | #if 0 | |
3115 | /* Some stupid compilers have trouble with the following, so break | |
3116 | it up into simpler expressions. */ | |
3117 | TYPE_FIELD_VIRTUAL_BITS (type) = (B_TYPE *) | |
3118 | TYPE_ALLOC (type, B_BYTES (TYPE_N_BASECLASSES (type))); | |
3119 | #else | |
3120 | { | |
3121 | int num_bytes = B_BYTES (TYPE_N_BASECLASSES (type)); | |
3122 | char *pointer; | |
3123 | ||
3124 | pointer = (char *) TYPE_ALLOC (type, num_bytes); | |
3125 | TYPE_FIELD_VIRTUAL_BITS (type) = (B_TYPE *) pointer; | |
3126 | } | |
3127 | #endif /* 0 */ | |
3128 | ||
3129 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), TYPE_N_BASECLASSES (type)); | |
3130 | ||
3131 | for (i = 0; i < TYPE_N_BASECLASSES (type); i++) | |
3132 | { | |
3133 | new = (struct nextfield *) xmalloc (sizeof (struct nextfield)); | |
b8c9b27d | 3134 | make_cleanup (xfree, new); |
c906108c | 3135 | memset (new, 0, sizeof (struct nextfield)); |
c5aa993b JM |
3136 | new->next = fip->list; |
3137 | fip->list = new; | |
c378eb4e MS |
3138 | FIELD_BITSIZE (new->field) = 0; /* This should be an unpacked |
3139 | field! */ | |
c906108c SS |
3140 | |
3141 | STABS_CONTINUE (pp, objfile); | |
3142 | switch (**pp) | |
3143 | { | |
c5aa993b | 3144 | case '0': |
c378eb4e | 3145 | /* Nothing to do. */ |
c5aa993b JM |
3146 | break; |
3147 | case '1': | |
3148 | SET_TYPE_FIELD_VIRTUAL (type, i); | |
3149 | break; | |
3150 | default: | |
3151 | /* Unknown character. Complain and treat it as non-virtual. */ | |
3152 | { | |
23136709 | 3153 | complaint (&symfile_complaints, |
3e43a32a MS |
3154 | _("Unknown virtual character `%c' for baseclass"), |
3155 | **pp); | |
c5aa993b | 3156 | } |
c906108c SS |
3157 | } |
3158 | ++(*pp); | |
3159 | ||
c5aa993b JM |
3160 | new->visibility = *(*pp)++; |
3161 | switch (new->visibility) | |
c906108c | 3162 | { |
c5aa993b JM |
3163 | case VISIBILITY_PRIVATE: |
3164 | case VISIBILITY_PROTECTED: | |
3165 | case VISIBILITY_PUBLIC: | |
3166 | break; | |
3167 | default: | |
3168 | /* Bad visibility format. Complain and treat it as | |
3169 | public. */ | |
3170 | { | |
23136709 | 3171 | complaint (&symfile_complaints, |
e2e0b3e5 | 3172 | _("Unknown visibility `%c' for baseclass"), |
23136709 | 3173 | new->visibility); |
c5aa993b JM |
3174 | new->visibility = VISIBILITY_PUBLIC; |
3175 | } | |
c906108c SS |
3176 | } |
3177 | ||
3178 | { | |
3179 | int nbits; | |
c5aa993b | 3180 | |
c906108c SS |
3181 | /* The remaining value is the bit offset of the portion of the object |
3182 | corresponding to this baseclass. Always zero in the absence of | |
3183 | multiple inheritance. */ | |
3184 | ||
f41f5e61 | 3185 | SET_FIELD_BITPOS (new->field, read_huge_number (pp, ',', &nbits, 0)); |
c906108c SS |
3186 | if (nbits != 0) |
3187 | return 0; | |
3188 | } | |
3189 | ||
3190 | /* The last piece of baseclass information is the type of the | |
c5aa993b | 3191 | base class. Read it, and remember it's type name as this |
c378eb4e | 3192 | field's name. */ |
c906108c | 3193 | |
c5aa993b JM |
3194 | new->field.type = read_type (pp, objfile); |
3195 | new->field.name = type_name_no_tag (new->field.type); | |
c906108c | 3196 | |
c378eb4e | 3197 | /* Skip trailing ';' and bump count of number of fields seen. */ |
c906108c SS |
3198 | if (**pp == ';') |
3199 | (*pp)++; | |
3200 | else | |
3201 | return 0; | |
3202 | } | |
3203 | return 1; | |
3204 | } | |
3205 | ||
3206 | /* The tail end of stabs for C++ classes that contain a virtual function | |
3207 | pointer contains a tilde, a %, and a type number. | |
3208 | The type number refers to the base class (possibly this class itself) which | |
3209 | contains the vtable pointer for the current class. | |
3210 | ||
3211 | This function is called when we have parsed all the method declarations, | |
3212 | so we can look for the vptr base class info. */ | |
3213 | ||
3214 | static int | |
fba45db2 KB |
3215 | read_tilde_fields (struct field_info *fip, char **pp, struct type *type, |
3216 | struct objfile *objfile) | |
c906108c | 3217 | { |
52f0bd74 | 3218 | char *p; |
c906108c SS |
3219 | |
3220 | STABS_CONTINUE (pp, objfile); | |
3221 | ||
c378eb4e | 3222 | /* If we are positioned at a ';', then skip it. */ |
c906108c SS |
3223 | if (**pp == ';') |
3224 | { | |
3225 | (*pp)++; | |
3226 | } | |
3227 | ||
3228 | if (**pp == '~') | |
3229 | { | |
3230 | (*pp)++; | |
3231 | ||
3232 | if (**pp == '=' || **pp == '+' || **pp == '-') | |
3233 | { | |
3234 | /* Obsolete flags that used to indicate the presence | |
c378eb4e | 3235 | of constructors and/or destructors. */ |
c906108c SS |
3236 | (*pp)++; |
3237 | } | |
3238 | ||
3239 | /* Read either a '%' or the final ';'. */ | |
3240 | if (*(*pp)++ == '%') | |
3241 | { | |
3242 | /* The next number is the type number of the base class | |
3243 | (possibly our own class) which supplies the vtable for | |
3244 | this class. Parse it out, and search that class to find | |
3245 | its vtable pointer, and install those into TYPE_VPTR_BASETYPE | |
3246 | and TYPE_VPTR_FIELDNO. */ | |
3247 | ||
3248 | struct type *t; | |
3249 | int i; | |
3250 | ||
3251 | t = read_type (pp, objfile); | |
3252 | p = (*pp)++; | |
3253 | while (*p != '\0' && *p != ';') | |
3254 | { | |
3255 | p++; | |
3256 | } | |
3257 | if (*p == '\0') | |
3258 | { | |
3259 | /* Premature end of symbol. */ | |
3260 | return 0; | |
3261 | } | |
c5aa993b | 3262 | |
c906108c | 3263 | TYPE_VPTR_BASETYPE (type) = t; |
c378eb4e | 3264 | if (type == t) /* Our own class provides vtbl ptr. */ |
c906108c SS |
3265 | { |
3266 | for (i = TYPE_NFIELDS (t) - 1; | |
3267 | i >= TYPE_N_BASECLASSES (t); | |
3268 | --i) | |
3269 | { | |
0d5cff50 | 3270 | const char *name = TYPE_FIELD_NAME (t, i); |
433759f7 | 3271 | |
8343f86c | 3272 | if (!strncmp (name, vptr_name, sizeof (vptr_name) - 2) |
74451869 | 3273 | && is_cplus_marker (name[sizeof (vptr_name) - 2])) |
c906108c SS |
3274 | { |
3275 | TYPE_VPTR_FIELDNO (type) = i; | |
3276 | goto gotit; | |
3277 | } | |
3278 | } | |
3279 | /* Virtual function table field not found. */ | |
23136709 | 3280 | complaint (&symfile_complaints, |
3e43a32a MS |
3281 | _("virtual function table pointer " |
3282 | "not found when defining class `%s'"), | |
23136709 | 3283 | TYPE_NAME (type)); |
c906108c SS |
3284 | return 0; |
3285 | } | |
3286 | else | |
3287 | { | |
3288 | TYPE_VPTR_FIELDNO (type) = TYPE_VPTR_FIELDNO (t); | |
3289 | } | |
3290 | ||
c5aa993b | 3291 | gotit: |
c906108c SS |
3292 | *pp = p + 1; |
3293 | } | |
3294 | } | |
3295 | return 1; | |
3296 | } | |
3297 | ||
3298 | static int | |
aa1ee363 | 3299 | attach_fn_fields_to_type (struct field_info *fip, struct type *type) |
c906108c | 3300 | { |
52f0bd74 | 3301 | int n; |
c906108c SS |
3302 | |
3303 | for (n = TYPE_NFN_FIELDS (type); | |
c5aa993b JM |
3304 | fip->fnlist != NULL; |
3305 | fip->fnlist = fip->fnlist->next) | |
c906108c | 3306 | { |
c378eb4e | 3307 | --n; /* Circumvent Sun3 compiler bug. */ |
c5aa993b | 3308 | TYPE_FN_FIELDLISTS (type)[n] = fip->fnlist->fn_fieldlist; |
c906108c SS |
3309 | } |
3310 | return 1; | |
3311 | } | |
3312 | ||
c906108c SS |
3313 | /* Create the vector of fields, and record how big it is. |
3314 | We need this info to record proper virtual function table information | |
3315 | for this class's virtual functions. */ | |
3316 | ||
3317 | static int | |
aa1ee363 | 3318 | attach_fields_to_type (struct field_info *fip, struct type *type, |
fba45db2 | 3319 | struct objfile *objfile) |
c906108c | 3320 | { |
52f0bd74 AC |
3321 | int nfields = 0; |
3322 | int non_public_fields = 0; | |
3323 | struct nextfield *scan; | |
c906108c SS |
3324 | |
3325 | /* Count up the number of fields that we have, as well as taking note of | |
3326 | whether or not there are any non-public fields, which requires us to | |
3327 | allocate and build the private_field_bits and protected_field_bits | |
c378eb4e | 3328 | bitfields. */ |
c906108c | 3329 | |
c5aa993b | 3330 | for (scan = fip->list; scan != NULL; scan = scan->next) |
c906108c SS |
3331 | { |
3332 | nfields++; | |
c5aa993b | 3333 | if (scan->visibility != VISIBILITY_PUBLIC) |
c906108c SS |
3334 | { |
3335 | non_public_fields++; | |
3336 | } | |
3337 | } | |
3338 | ||
3339 | /* Now we know how many fields there are, and whether or not there are any | |
3340 | non-public fields. Record the field count, allocate space for the | |
c378eb4e | 3341 | array of fields, and create blank visibility bitfields if necessary. */ |
c906108c SS |
3342 | |
3343 | TYPE_NFIELDS (type) = nfields; | |
3344 | TYPE_FIELDS (type) = (struct field *) | |
3345 | TYPE_ALLOC (type, sizeof (struct field) * nfields); | |
3346 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields); | |
3347 | ||
3348 | if (non_public_fields) | |
3349 | { | |
3350 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
3351 | ||
3352 | TYPE_FIELD_PRIVATE_BITS (type) = | |
3353 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
3354 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
3355 | ||
3356 | TYPE_FIELD_PROTECTED_BITS (type) = | |
3357 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
3358 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
3359 | ||
3360 | TYPE_FIELD_IGNORE_BITS (type) = | |
3361 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
3362 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
3363 | } | |
3364 | ||
c378eb4e MS |
3365 | /* Copy the saved-up fields into the field vector. Start from the |
3366 | head of the list, adding to the tail of the field array, so that | |
3367 | they end up in the same order in the array in which they were | |
3368 | added to the list. */ | |
c906108c SS |
3369 | |
3370 | while (nfields-- > 0) | |
3371 | { | |
c5aa993b JM |
3372 | TYPE_FIELD (type, nfields) = fip->list->field; |
3373 | switch (fip->list->visibility) | |
c906108c | 3374 | { |
c5aa993b JM |
3375 | case VISIBILITY_PRIVATE: |
3376 | SET_TYPE_FIELD_PRIVATE (type, nfields); | |
3377 | break; | |
c906108c | 3378 | |
c5aa993b JM |
3379 | case VISIBILITY_PROTECTED: |
3380 | SET_TYPE_FIELD_PROTECTED (type, nfields); | |
3381 | break; | |
c906108c | 3382 | |
c5aa993b JM |
3383 | case VISIBILITY_IGNORE: |
3384 | SET_TYPE_FIELD_IGNORE (type, nfields); | |
3385 | break; | |
c906108c | 3386 | |
c5aa993b JM |
3387 | case VISIBILITY_PUBLIC: |
3388 | break; | |
c906108c | 3389 | |
c5aa993b JM |
3390 | default: |
3391 | /* Unknown visibility. Complain and treat it as public. */ | |
3392 | { | |
3e43a32a MS |
3393 | complaint (&symfile_complaints, |
3394 | _("Unknown visibility `%c' for field"), | |
23136709 | 3395 | fip->list->visibility); |
c5aa993b JM |
3396 | } |
3397 | break; | |
c906108c | 3398 | } |
c5aa993b | 3399 | fip->list = fip->list->next; |
c906108c SS |
3400 | } |
3401 | return 1; | |
3402 | } | |
3403 | ||
2ae1c2d2 | 3404 | |
2ae1c2d2 JB |
3405 | /* Complain that the compiler has emitted more than one definition for the |
3406 | structure type TYPE. */ | |
3407 | static void | |
3408 | complain_about_struct_wipeout (struct type *type) | |
3409 | { | |
0d5cff50 DE |
3410 | const char *name = ""; |
3411 | const char *kind = ""; | |
2ae1c2d2 JB |
3412 | |
3413 | if (TYPE_TAG_NAME (type)) | |
3414 | { | |
3415 | name = TYPE_TAG_NAME (type); | |
3416 | switch (TYPE_CODE (type)) | |
3417 | { | |
3418 | case TYPE_CODE_STRUCT: kind = "struct "; break; | |
3419 | case TYPE_CODE_UNION: kind = "union "; break; | |
3420 | case TYPE_CODE_ENUM: kind = "enum "; break; | |
3421 | default: kind = ""; | |
3422 | } | |
3423 | } | |
3424 | else if (TYPE_NAME (type)) | |
3425 | { | |
3426 | name = TYPE_NAME (type); | |
3427 | kind = ""; | |
3428 | } | |
3429 | else | |
3430 | { | |
3431 | name = "<unknown>"; | |
3432 | kind = ""; | |
3433 | } | |
3434 | ||
23136709 | 3435 | complaint (&symfile_complaints, |
e2e0b3e5 | 3436 | _("struct/union type gets multiply defined: %s%s"), kind, name); |
2ae1c2d2 JB |
3437 | } |
3438 | ||
621791b8 PM |
3439 | /* Set the length for all variants of a same main_type, which are |
3440 | connected in the closed chain. | |
3441 | ||
3442 | This is something that needs to be done when a type is defined *after* | |
3443 | some cross references to this type have already been read. Consider | |
3444 | for instance the following scenario where we have the following two | |
3445 | stabs entries: | |
3446 | ||
3447 | .stabs "t:p(0,21)=*(0,22)=k(0,23)=xsdummy:",160,0,28,-24 | |
3448 | .stabs "dummy:T(0,23)=s16x:(0,1),0,3[...]" | |
3449 | ||
3450 | A stubbed version of type dummy is created while processing the first | |
3451 | stabs entry. The length of that type is initially set to zero, since | |
3452 | it is unknown at this point. Also, a "constant" variation of type | |
3453 | "dummy" is created as well (this is the "(0,22)=k(0,23)" section of | |
3454 | the stabs line). | |
3455 | ||
3456 | The second stabs entry allows us to replace the stubbed definition | |
3457 | with the real definition. However, we still need to adjust the length | |
3458 | of the "constant" variation of that type, as its length was left | |
3459 | untouched during the main type replacement... */ | |
3460 | ||
3461 | static void | |
9e69f3b6 | 3462 | set_length_in_type_chain (struct type *type) |
621791b8 PM |
3463 | { |
3464 | struct type *ntype = TYPE_CHAIN (type); | |
3465 | ||
3466 | while (ntype != type) | |
3467 | { | |
3468 | if (TYPE_LENGTH(ntype) == 0) | |
3469 | TYPE_LENGTH (ntype) = TYPE_LENGTH (type); | |
3470 | else | |
3471 | complain_about_struct_wipeout (ntype); | |
3472 | ntype = TYPE_CHAIN (ntype); | |
3473 | } | |
3474 | } | |
2ae1c2d2 | 3475 | |
c906108c SS |
3476 | /* Read the description of a structure (or union type) and return an object |
3477 | describing the type. | |
3478 | ||
3479 | PP points to a character pointer that points to the next unconsumed token | |
b021a221 | 3480 | in the stabs string. For example, given stabs "A:T4=s4a:1,0,32;;", |
c906108c SS |
3481 | *PP will point to "4a:1,0,32;;". |
3482 | ||
3483 | TYPE points to an incomplete type that needs to be filled in. | |
3484 | ||
3485 | OBJFILE points to the current objfile from which the stabs information is | |
3486 | being read. (Note that it is redundant in that TYPE also contains a pointer | |
3487 | to this same objfile, so it might be a good idea to eliminate it. FIXME). | |
c5aa993b | 3488 | */ |
c906108c SS |
3489 | |
3490 | static struct type * | |
2ae1c2d2 JB |
3491 | read_struct_type (char **pp, struct type *type, enum type_code type_code, |
3492 | struct objfile *objfile) | |
c906108c SS |
3493 | { |
3494 | struct cleanup *back_to; | |
3495 | struct field_info fi; | |
3496 | ||
3497 | fi.list = NULL; | |
3498 | fi.fnlist = NULL; | |
3499 | ||
2ae1c2d2 JB |
3500 | /* When describing struct/union/class types in stabs, G++ always drops |
3501 | all qualifications from the name. So if you've got: | |
3502 | struct A { ... struct B { ... }; ... }; | |
3503 | then G++ will emit stabs for `struct A::B' that call it simply | |
3504 | `struct B'. Obviously, if you've got a real top-level definition for | |
3505 | `struct B', or other nested definitions, this is going to cause | |
3506 | problems. | |
3507 | ||
3508 | Obviously, GDB can't fix this by itself, but it can at least avoid | |
3509 | scribbling on existing structure type objects when new definitions | |
3510 | appear. */ | |
3511 | if (! (TYPE_CODE (type) == TYPE_CODE_UNDEF | |
3512 | || TYPE_STUB (type))) | |
3513 | { | |
3514 | complain_about_struct_wipeout (type); | |
3515 | ||
3516 | /* It's probably best to return the type unchanged. */ | |
3517 | return type; | |
3518 | } | |
3519 | ||
c906108c SS |
3520 | back_to = make_cleanup (null_cleanup, 0); |
3521 | ||
3522 | INIT_CPLUS_SPECIFIC (type); | |
2ae1c2d2 | 3523 | TYPE_CODE (type) = type_code; |
876cecd0 | 3524 | TYPE_STUB (type) = 0; |
c906108c SS |
3525 | |
3526 | /* First comes the total size in bytes. */ | |
3527 | ||
3528 | { | |
3529 | int nbits; | |
433759f7 | 3530 | |
94e10a22 | 3531 | TYPE_LENGTH (type) = read_huge_number (pp, 0, &nbits, 0); |
c906108c | 3532 | if (nbits != 0) |
73b8d9da TT |
3533 | { |
3534 | do_cleanups (back_to); | |
3535 | return error_type (pp, objfile); | |
3536 | } | |
621791b8 | 3537 | set_length_in_type_chain (type); |
c906108c SS |
3538 | } |
3539 | ||
3540 | /* Now read the baseclasses, if any, read the regular C struct or C++ | |
3541 | class member fields, attach the fields to the type, read the C++ | |
3542 | member functions, attach them to the type, and then read any tilde | |
3e43a32a | 3543 | field (baseclass specifier for the class holding the main vtable). */ |
c906108c SS |
3544 | |
3545 | if (!read_baseclasses (&fi, pp, type, objfile) | |
3546 | || !read_struct_fields (&fi, pp, type, objfile) | |
3547 | || !attach_fields_to_type (&fi, type, objfile) | |
3548 | || !read_member_functions (&fi, pp, type, objfile) | |
3549 | || !attach_fn_fields_to_type (&fi, type) | |
3550 | || !read_tilde_fields (&fi, pp, type, objfile)) | |
3551 | { | |
3552 | type = error_type (pp, objfile); | |
3553 | } | |
3554 | ||
3555 | do_cleanups (back_to); | |
3556 | return (type); | |
3557 | } | |
3558 | ||
3559 | /* Read a definition of an array type, | |
3560 | and create and return a suitable type object. | |
3561 | Also creates a range type which represents the bounds of that | |
3562 | array. */ | |
3563 | ||
3564 | static struct type * | |
aa1ee363 | 3565 | read_array_type (char **pp, struct type *type, |
fba45db2 | 3566 | struct objfile *objfile) |
c906108c SS |
3567 | { |
3568 | struct type *index_type, *element_type, *range_type; | |
3569 | int lower, upper; | |
3570 | int adjustable = 0; | |
3571 | int nbits; | |
3572 | ||
3573 | /* Format of an array type: | |
3574 | "ar<index type>;lower;upper;<array_contents_type>". | |
3575 | OS9000: "arlower,upper;<array_contents_type>". | |
3576 | ||
3577 | Fortran adjustable arrays use Adigits or Tdigits for lower or upper; | |
3578 | for these, produce a type like float[][]. */ | |
3579 | ||
c906108c SS |
3580 | { |
3581 | index_type = read_type (pp, objfile); | |
3582 | if (**pp != ';') | |
3583 | /* Improper format of array type decl. */ | |
3584 | return error_type (pp, objfile); | |
3585 | ++*pp; | |
3586 | } | |
3587 | ||
3588 | if (!(**pp >= '0' && **pp <= '9') && **pp != '-') | |
3589 | { | |
3590 | (*pp)++; | |
3591 | adjustable = 1; | |
3592 | } | |
94e10a22 | 3593 | lower = read_huge_number (pp, ';', &nbits, 0); |
cdecafbe | 3594 | |
c906108c SS |
3595 | if (nbits != 0) |
3596 | return error_type (pp, objfile); | |
3597 | ||
3598 | if (!(**pp >= '0' && **pp <= '9') && **pp != '-') | |
3599 | { | |
3600 | (*pp)++; | |
3601 | adjustable = 1; | |
3602 | } | |
94e10a22 | 3603 | upper = read_huge_number (pp, ';', &nbits, 0); |
c906108c SS |
3604 | if (nbits != 0) |
3605 | return error_type (pp, objfile); | |
c5aa993b | 3606 | |
c906108c SS |
3607 | element_type = read_type (pp, objfile); |
3608 | ||
3609 | if (adjustable) | |
3610 | { | |
3611 | lower = 0; | |
3612 | upper = -1; | |
3613 | } | |
3614 | ||
3615 | range_type = | |
0c9c3474 | 3616 | create_static_range_type ((struct type *) NULL, index_type, lower, upper); |
c906108c SS |
3617 | type = create_array_type (type, element_type, range_type); |
3618 | ||
3619 | return type; | |
3620 | } | |
3621 | ||
3622 | ||
3623 | /* Read a definition of an enumeration type, | |
3624 | and create and return a suitable type object. | |
3625 | Also defines the symbols that represent the values of the type. */ | |
3626 | ||
3627 | static struct type * | |
aa1ee363 | 3628 | read_enum_type (char **pp, struct type *type, |
fba45db2 | 3629 | struct objfile *objfile) |
c906108c | 3630 | { |
5e2b427d | 3631 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
52f0bd74 | 3632 | char *p; |
c906108c | 3633 | char *name; |
52f0bd74 AC |
3634 | long n; |
3635 | struct symbol *sym; | |
c906108c SS |
3636 | int nsyms = 0; |
3637 | struct pending **symlist; | |
3638 | struct pending *osyms, *syms; | |
3639 | int o_nsyms; | |
3640 | int nbits; | |
3641 | int unsigned_enum = 1; | |
3642 | ||
3643 | #if 0 | |
3644 | /* FIXME! The stabs produced by Sun CC merrily define things that ought | |
3645 | to be file-scope, between N_FN entries, using N_LSYM. What's a mother | |
3646 | to do? For now, force all enum values to file scope. */ | |
3647 | if (within_function) | |
3648 | symlist = &local_symbols; | |
3649 | else | |
3650 | #endif | |
3651 | symlist = &file_symbols; | |
3652 | osyms = *symlist; | |
3653 | o_nsyms = osyms ? osyms->nsyms : 0; | |
3654 | ||
c906108c SS |
3655 | /* The aix4 compiler emits an extra field before the enum members; |
3656 | my guess is it's a type of some sort. Just ignore it. */ | |
3657 | if (**pp == '-') | |
3658 | { | |
3659 | /* Skip over the type. */ | |
3660 | while (**pp != ':') | |
c5aa993b | 3661 | (*pp)++; |
c906108c SS |
3662 | |
3663 | /* Skip over the colon. */ | |
3664 | (*pp)++; | |
3665 | } | |
3666 | ||
3667 | /* Read the value-names and their values. | |
3668 | The input syntax is NAME:VALUE,NAME:VALUE, and so on. | |
3669 | A semicolon or comma instead of a NAME means the end. */ | |
3670 | while (**pp && **pp != ';' && **pp != ',') | |
3671 | { | |
3672 | STABS_CONTINUE (pp, objfile); | |
3673 | p = *pp; | |
c5aa993b JM |
3674 | while (*p != ':') |
3675 | p++; | |
10f0c4bb | 3676 | name = obstack_copy0 (&objfile->objfile_obstack, *pp, p - *pp); |
c906108c | 3677 | *pp = p + 1; |
94e10a22 | 3678 | n = read_huge_number (pp, ',', &nbits, 0); |
c906108c SS |
3679 | if (nbits != 0) |
3680 | return error_type (pp, objfile); | |
3681 | ||
e623cf5d | 3682 | sym = allocate_symbol (objfile); |
3567439c | 3683 | SYMBOL_SET_LINKAGE_NAME (sym, name); |
f85f34ed TT |
3684 | SYMBOL_SET_LANGUAGE (sym, current_subfile->language, |
3685 | &objfile->objfile_obstack); | |
f1e6e072 | 3686 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
176620f1 | 3687 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
3688 | SYMBOL_VALUE (sym) = n; |
3689 | if (n < 0) | |
3690 | unsigned_enum = 0; | |
3691 | add_symbol_to_list (sym, symlist); | |
3692 | nsyms++; | |
3693 | } | |
3694 | ||
3695 | if (**pp == ';') | |
3696 | (*pp)++; /* Skip the semicolon. */ | |
3697 | ||
3698 | /* Now fill in the fields of the type-structure. */ | |
3699 | ||
5e2b427d | 3700 | TYPE_LENGTH (type) = gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT; |
621791b8 | 3701 | set_length_in_type_chain (type); |
c906108c | 3702 | TYPE_CODE (type) = TYPE_CODE_ENUM; |
876cecd0 | 3703 | TYPE_STUB (type) = 0; |
c906108c | 3704 | if (unsigned_enum) |
876cecd0 | 3705 | TYPE_UNSIGNED (type) = 1; |
c906108c SS |
3706 | TYPE_NFIELDS (type) = nsyms; |
3707 | TYPE_FIELDS (type) = (struct field *) | |
3708 | TYPE_ALLOC (type, sizeof (struct field) * nsyms); | |
3709 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nsyms); | |
3710 | ||
3711 | /* Find the symbols for the values and put them into the type. | |
3712 | The symbols can be found in the symlist that we put them on | |
3713 | to cause them to be defined. osyms contains the old value | |
3714 | of that symlist; everything up to there was defined by us. */ | |
3715 | /* Note that we preserve the order of the enum constants, so | |
3716 | that in something like "enum {FOO, LAST_THING=FOO}" we print | |
3717 | FOO, not LAST_THING. */ | |
3718 | ||
3719 | for (syms = *symlist, n = nsyms - 1; syms; syms = syms->next) | |
3720 | { | |
3721 | int last = syms == osyms ? o_nsyms : 0; | |
3722 | int j = syms->nsyms; | |
433759f7 | 3723 | |
c906108c SS |
3724 | for (; --j >= last; --n) |
3725 | { | |
3726 | struct symbol *xsym = syms->symbol[j]; | |
433759f7 | 3727 | |
c906108c | 3728 | SYMBOL_TYPE (xsym) = type; |
3567439c | 3729 | TYPE_FIELD_NAME (type, n) = SYMBOL_LINKAGE_NAME (xsym); |
14e75d8e | 3730 | SET_FIELD_ENUMVAL (TYPE_FIELD (type, n), SYMBOL_VALUE (xsym)); |
c906108c SS |
3731 | TYPE_FIELD_BITSIZE (type, n) = 0; |
3732 | } | |
3733 | if (syms == osyms) | |
3734 | break; | |
3735 | } | |
3736 | ||
3737 | return type; | |
3738 | } | |
3739 | ||
3740 | /* Sun's ACC uses a somewhat saner method for specifying the builtin | |
3741 | typedefs in every file (for int, long, etc): | |
3742 | ||
c5aa993b JM |
3743 | type = b <signed> <width> <format type>; <offset>; <nbits> |
3744 | signed = u or s. | |
3745 | optional format type = c or b for char or boolean. | |
3746 | offset = offset from high order bit to start bit of type. | |
3747 | width is # bytes in object of this type, nbits is # bits in type. | |
c906108c SS |
3748 | |
3749 | The width/offset stuff appears to be for small objects stored in | |
3750 | larger ones (e.g. `shorts' in `int' registers). We ignore it for now, | |
3751 | FIXME. */ | |
3752 | ||
3753 | static struct type * | |
35a2f538 | 3754 | read_sun_builtin_type (char **pp, int typenums[2], struct objfile *objfile) |
c906108c SS |
3755 | { |
3756 | int type_bits; | |
3757 | int nbits; | |
3758 | int signed_type; | |
3759 | enum type_code code = TYPE_CODE_INT; | |
3760 | ||
3761 | switch (**pp) | |
3762 | { | |
c5aa993b JM |
3763 | case 's': |
3764 | signed_type = 1; | |
3765 | break; | |
3766 | case 'u': | |
3767 | signed_type = 0; | |
3768 | break; | |
3769 | default: | |
3770 | return error_type (pp, objfile); | |
c906108c SS |
3771 | } |
3772 | (*pp)++; | |
3773 | ||
3774 | /* For some odd reason, all forms of char put a c here. This is strange | |
3775 | because no other type has this honor. We can safely ignore this because | |
3776 | we actually determine 'char'acterness by the number of bits specified in | |
3777 | the descriptor. | |
3778 | Boolean forms, e.g Fortran logical*X, put a b here. */ | |
3779 | ||
3780 | if (**pp == 'c') | |
3781 | (*pp)++; | |
3782 | else if (**pp == 'b') | |
3783 | { | |
3784 | code = TYPE_CODE_BOOL; | |
3785 | (*pp)++; | |
3786 | } | |
3787 | ||
3788 | /* The first number appears to be the number of bytes occupied | |
3789 | by this type, except that unsigned short is 4 instead of 2. | |
3790 | Since this information is redundant with the third number, | |
3791 | we will ignore it. */ | |
94e10a22 | 3792 | read_huge_number (pp, ';', &nbits, 0); |
c906108c SS |
3793 | if (nbits != 0) |
3794 | return error_type (pp, objfile); | |
3795 | ||
c378eb4e | 3796 | /* The second number is always 0, so ignore it too. */ |
94e10a22 | 3797 | read_huge_number (pp, ';', &nbits, 0); |
c906108c SS |
3798 | if (nbits != 0) |
3799 | return error_type (pp, objfile); | |
3800 | ||
c378eb4e | 3801 | /* The third number is the number of bits for this type. */ |
94e10a22 | 3802 | type_bits = read_huge_number (pp, 0, &nbits, 0); |
c906108c SS |
3803 | if (nbits != 0) |
3804 | return error_type (pp, objfile); | |
3805 | /* The type *should* end with a semicolon. If it are embedded | |
3806 | in a larger type the semicolon may be the only way to know where | |
3807 | the type ends. If this type is at the end of the stabstring we | |
3808 | can deal with the omitted semicolon (but we don't have to like | |
3809 | it). Don't bother to complain(), Sun's compiler omits the semicolon | |
3810 | for "void". */ | |
3811 | if (**pp == ';') | |
3812 | ++(*pp); | |
3813 | ||
3814 | if (type_bits == 0) | |
3815 | return init_type (TYPE_CODE_VOID, 1, | |
c5aa993b | 3816 | signed_type ? 0 : TYPE_FLAG_UNSIGNED, (char *) NULL, |
c906108c SS |
3817 | objfile); |
3818 | else | |
3819 | return init_type (code, | |
3820 | type_bits / TARGET_CHAR_BIT, | |
c5aa993b | 3821 | signed_type ? 0 : TYPE_FLAG_UNSIGNED, (char *) NULL, |
c906108c SS |
3822 | objfile); |
3823 | } | |
3824 | ||
3825 | static struct type * | |
35a2f538 | 3826 | read_sun_floating_type (char **pp, int typenums[2], struct objfile *objfile) |
c906108c SS |
3827 | { |
3828 | int nbits; | |
3829 | int details; | |
3830 | int nbytes; | |
f65ca430 | 3831 | struct type *rettype; |
c906108c SS |
3832 | |
3833 | /* The first number has more details about the type, for example | |
3834 | FN_COMPLEX. */ | |
94e10a22 | 3835 | details = read_huge_number (pp, ';', &nbits, 0); |
c906108c SS |
3836 | if (nbits != 0) |
3837 | return error_type (pp, objfile); | |
3838 | ||
c378eb4e | 3839 | /* The second number is the number of bytes occupied by this type. */ |
94e10a22 | 3840 | nbytes = read_huge_number (pp, ';', &nbits, 0); |
c906108c SS |
3841 | if (nbits != 0) |
3842 | return error_type (pp, objfile); | |
3843 | ||
3844 | if (details == NF_COMPLEX || details == NF_COMPLEX16 | |
3845 | || details == NF_COMPLEX32) | |
f65ca430 DJ |
3846 | { |
3847 | rettype = init_type (TYPE_CODE_COMPLEX, nbytes, 0, NULL, objfile); | |
3848 | TYPE_TARGET_TYPE (rettype) | |
3849 | = init_type (TYPE_CODE_FLT, nbytes / 2, 0, NULL, objfile); | |
3850 | return rettype; | |
3851 | } | |
c906108c SS |
3852 | |
3853 | return init_type (TYPE_CODE_FLT, nbytes, 0, NULL, objfile); | |
3854 | } | |
3855 | ||
3856 | /* Read a number from the string pointed to by *PP. | |
3857 | The value of *PP is advanced over the number. | |
3858 | If END is nonzero, the character that ends the | |
3859 | number must match END, or an error happens; | |
3860 | and that character is skipped if it does match. | |
3861 | If END is zero, *PP is left pointing to that character. | |
3862 | ||
94e10a22 JG |
3863 | If TWOS_COMPLEMENT_BITS is set to a strictly positive value and if |
3864 | the number is represented in an octal representation, assume that | |
3865 | it is represented in a 2's complement representation with a size of | |
3866 | TWOS_COMPLEMENT_BITS. | |
3867 | ||
c906108c SS |
3868 | If the number fits in a long, set *BITS to 0 and return the value. |
3869 | If not, set *BITS to be the number of bits in the number and return 0. | |
3870 | ||
3871 | If encounter garbage, set *BITS to -1 and return 0. */ | |
3872 | ||
c2d11a7d | 3873 | static long |
94e10a22 | 3874 | read_huge_number (char **pp, int end, int *bits, int twos_complement_bits) |
c906108c SS |
3875 | { |
3876 | char *p = *pp; | |
3877 | int sign = 1; | |
51e9e0d4 | 3878 | int sign_bit = 0; |
c2d11a7d | 3879 | long n = 0; |
c906108c SS |
3880 | int radix = 10; |
3881 | char overflow = 0; | |
3882 | int nbits = 0; | |
3883 | int c; | |
c2d11a7d | 3884 | long upper_limit; |
a2699720 | 3885 | int twos_complement_representation = 0; |
c5aa993b | 3886 | |
c906108c SS |
3887 | if (*p == '-') |
3888 | { | |
3889 | sign = -1; | |
3890 | p++; | |
3891 | } | |
3892 | ||
3893 | /* Leading zero means octal. GCC uses this to output values larger | |
3894 | than an int (because that would be hard in decimal). */ | |
3895 | if (*p == '0') | |
3896 | { | |
3897 | radix = 8; | |
3898 | p++; | |
3899 | } | |
3900 | ||
a2699720 PA |
3901 | /* Skip extra zeros. */ |
3902 | while (*p == '0') | |
3903 | p++; | |
3904 | ||
3905 | if (sign > 0 && radix == 8 && twos_complement_bits > 0) | |
3906 | { | |
3907 | /* Octal, possibly signed. Check if we have enough chars for a | |
3908 | negative number. */ | |
3909 | ||
3910 | size_t len; | |
3911 | char *p1 = p; | |
433759f7 | 3912 | |
a2699720 PA |
3913 | while ((c = *p1) >= '0' && c < '8') |
3914 | p1++; | |
3915 | ||
3916 | len = p1 - p; | |
3917 | if (len > twos_complement_bits / 3 | |
3e43a32a MS |
3918 | || (twos_complement_bits % 3 == 0 |
3919 | && len == twos_complement_bits / 3)) | |
a2699720 PA |
3920 | { |
3921 | /* Ok, we have enough characters for a signed value, check | |
3922 | for signness by testing if the sign bit is set. */ | |
3923 | sign_bit = (twos_complement_bits % 3 + 2) % 3; | |
3924 | c = *p - '0'; | |
3925 | if (c & (1 << sign_bit)) | |
3926 | { | |
3927 | /* Definitely signed. */ | |
3928 | twos_complement_representation = 1; | |
3929 | sign = -1; | |
3930 | } | |
3931 | } | |
3932 | } | |
3933 | ||
1b831c93 | 3934 | upper_limit = LONG_MAX / radix; |
c906108c SS |
3935 | |
3936 | while ((c = *p++) >= '0' && c < ('0' + radix)) | |
3937 | { | |
3938 | if (n <= upper_limit) | |
94e10a22 JG |
3939 | { |
3940 | if (twos_complement_representation) | |
3941 | { | |
a2699720 PA |
3942 | /* Octal, signed, twos complement representation. In |
3943 | this case, n is the corresponding absolute value. */ | |
3944 | if (n == 0) | |
3945 | { | |
3946 | long sn = c - '0' - ((2 * (c - '0')) | (2 << sign_bit)); | |
433759f7 | 3947 | |
a2699720 PA |
3948 | n = -sn; |
3949 | } | |
94e10a22 JG |
3950 | else |
3951 | { | |
a2699720 PA |
3952 | n *= radix; |
3953 | n -= c - '0'; | |
94e10a22 | 3954 | } |
94e10a22 JG |
3955 | } |
3956 | else | |
3957 | { | |
3958 | /* unsigned representation */ | |
3959 | n *= radix; | |
c378eb4e | 3960 | n += c - '0'; /* FIXME this overflows anyway. */ |
94e10a22 JG |
3961 | } |
3962 | } | |
c906108c | 3963 | else |
94e10a22 | 3964 | overflow = 1; |
c5aa993b | 3965 | |
c906108c | 3966 | /* This depends on large values being output in octal, which is |
c378eb4e | 3967 | what GCC does. */ |
c906108c SS |
3968 | if (radix == 8) |
3969 | { | |
3970 | if (nbits == 0) | |
3971 | { | |
3972 | if (c == '0') | |
3973 | /* Ignore leading zeroes. */ | |
3974 | ; | |
3975 | else if (c == '1') | |
3976 | nbits = 1; | |
3977 | else if (c == '2' || c == '3') | |
3978 | nbits = 2; | |
3979 | else | |
3980 | nbits = 3; | |
3981 | } | |
3982 | else | |
3983 | nbits += 3; | |
3984 | } | |
3985 | } | |
3986 | if (end) | |
3987 | { | |
3988 | if (c && c != end) | |
3989 | { | |
3990 | if (bits != NULL) | |
3991 | *bits = -1; | |
3992 | return 0; | |
3993 | } | |
3994 | } | |
3995 | else | |
3996 | --p; | |
3997 | ||
a2699720 PA |
3998 | if (radix == 8 && twos_complement_bits > 0 && nbits > twos_complement_bits) |
3999 | { | |
4000 | /* We were supposed to parse a number with maximum | |
4001 | TWOS_COMPLEMENT_BITS bits, but something went wrong. */ | |
4002 | if (bits != NULL) | |
4003 | *bits = -1; | |
4004 | return 0; | |
4005 | } | |
4006 | ||
c906108c SS |
4007 | *pp = p; |
4008 | if (overflow) | |
4009 | { | |
4010 | if (nbits == 0) | |
4011 | { | |
4012 | /* Large decimal constants are an error (because it is hard to | |
4013 | count how many bits are in them). */ | |
4014 | if (bits != NULL) | |
4015 | *bits = -1; | |
4016 | return 0; | |
4017 | } | |
c5aa993b | 4018 | |
c906108c | 4019 | /* -0x7f is the same as 0x80. So deal with it by adding one to |
a2699720 PA |
4020 | the number of bits. Two's complement represention octals |
4021 | can't have a '-' in front. */ | |
4022 | if (sign == -1 && !twos_complement_representation) | |
c906108c SS |
4023 | ++nbits; |
4024 | if (bits) | |
4025 | *bits = nbits; | |
4026 | } | |
4027 | else | |
4028 | { | |
4029 | if (bits) | |
4030 | *bits = 0; | |
a2699720 | 4031 | return n * sign; |
c906108c SS |
4032 | } |
4033 | /* It's *BITS which has the interesting information. */ | |
4034 | return 0; | |
4035 | } | |
4036 | ||
4037 | static struct type * | |
94e10a22 JG |
4038 | read_range_type (char **pp, int typenums[2], int type_size, |
4039 | struct objfile *objfile) | |
c906108c | 4040 | { |
5e2b427d | 4041 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
4042 | char *orig_pp = *pp; |
4043 | int rangenums[2]; | |
c2d11a7d | 4044 | long n2, n3; |
c906108c SS |
4045 | int n2bits, n3bits; |
4046 | int self_subrange; | |
4047 | struct type *result_type; | |
4048 | struct type *index_type = NULL; | |
4049 | ||
4050 | /* First comes a type we are a subrange of. | |
4051 | In C it is usually 0, 1 or the type being defined. */ | |
4052 | if (read_type_number (pp, rangenums) != 0) | |
4053 | return error_type (pp, objfile); | |
4054 | self_subrange = (rangenums[0] == typenums[0] && | |
4055 | rangenums[1] == typenums[1]); | |
4056 | ||
4057 | if (**pp == '=') | |
4058 | { | |
4059 | *pp = orig_pp; | |
4060 | index_type = read_type (pp, objfile); | |
4061 | } | |
4062 | ||
4063 | /* A semicolon should now follow; skip it. */ | |
4064 | if (**pp == ';') | |
4065 | (*pp)++; | |
4066 | ||
4067 | /* The remaining two operands are usually lower and upper bounds | |
4068 | of the range. But in some special cases they mean something else. */ | |
94e10a22 JG |
4069 | n2 = read_huge_number (pp, ';', &n2bits, type_size); |
4070 | n3 = read_huge_number (pp, ';', &n3bits, type_size); | |
c906108c SS |
4071 | |
4072 | if (n2bits == -1 || n3bits == -1) | |
4073 | return error_type (pp, objfile); | |
4074 | ||
4075 | if (index_type) | |
4076 | goto handle_true_range; | |
4077 | ||
4078 | /* If limits are huge, must be large integral type. */ | |
4079 | if (n2bits != 0 || n3bits != 0) | |
4080 | { | |
4081 | char got_signed = 0; | |
4082 | char got_unsigned = 0; | |
4083 | /* Number of bits in the type. */ | |
4084 | int nbits = 0; | |
4085 | ||
94e10a22 | 4086 | /* If a type size attribute has been specified, the bounds of |
c378eb4e | 4087 | the range should fit in this size. If the lower bounds needs |
94e10a22 JG |
4088 | more bits than the upper bound, then the type is signed. */ |
4089 | if (n2bits <= type_size && n3bits <= type_size) | |
4090 | { | |
4091 | if (n2bits == type_size && n2bits > n3bits) | |
4092 | got_signed = 1; | |
4093 | else | |
4094 | got_unsigned = 1; | |
4095 | nbits = type_size; | |
4096 | } | |
c906108c | 4097 | /* Range from 0 to <large number> is an unsigned large integral type. */ |
94e10a22 | 4098 | else if ((n2bits == 0 && n2 == 0) && n3bits != 0) |
c906108c SS |
4099 | { |
4100 | got_unsigned = 1; | |
4101 | nbits = n3bits; | |
4102 | } | |
4103 | /* Range from <large number> to <large number>-1 is a large signed | |
c5aa993b JM |
4104 | integral type. Take care of the case where <large number> doesn't |
4105 | fit in a long but <large number>-1 does. */ | |
c906108c SS |
4106 | else if ((n2bits != 0 && n3bits != 0 && n2bits == n3bits + 1) |
4107 | || (n2bits != 0 && n3bits == 0 | |
c2d11a7d JM |
4108 | && (n2bits == sizeof (long) * HOST_CHAR_BIT) |
4109 | && n3 == LONG_MAX)) | |
c906108c SS |
4110 | { |
4111 | got_signed = 1; | |
4112 | nbits = n2bits; | |
4113 | } | |
4114 | ||
4115 | if (got_signed || got_unsigned) | |
4116 | { | |
4117 | return init_type (TYPE_CODE_INT, nbits / TARGET_CHAR_BIT, | |
4118 | got_unsigned ? TYPE_FLAG_UNSIGNED : 0, NULL, | |
4119 | objfile); | |
4120 | } | |
4121 | else | |
4122 | return error_type (pp, objfile); | |
4123 | } | |
4124 | ||
4125 | /* A type defined as a subrange of itself, with bounds both 0, is void. */ | |
4126 | if (self_subrange && n2 == 0 && n3 == 0) | |
4127 | return init_type (TYPE_CODE_VOID, 1, 0, NULL, objfile); | |
4128 | ||
4129 | /* If n3 is zero and n2 is positive, we want a floating type, and n2 | |
4130 | is the width in bytes. | |
4131 | ||
4132 | Fortran programs appear to use this for complex types also. To | |
4133 | distinguish between floats and complex, g77 (and others?) seem | |
4134 | to use self-subranges for the complexes, and subranges of int for | |
4135 | the floats. | |
4136 | ||
4137 | Also note that for complexes, g77 sets n2 to the size of one of | |
4138 | the member floats, not the whole complex beast. My guess is that | |
c378eb4e | 4139 | this was to work well with pre-COMPLEX versions of gdb. */ |
c906108c SS |
4140 | |
4141 | if (n3 == 0 && n2 > 0) | |
4142 | { | |
1300f5dd JB |
4143 | struct type *float_type |
4144 | = init_type (TYPE_CODE_FLT, n2, 0, NULL, objfile); | |
4145 | ||
c906108c SS |
4146 | if (self_subrange) |
4147 | { | |
1300f5dd JB |
4148 | struct type *complex_type = |
4149 | init_type (TYPE_CODE_COMPLEX, 2 * n2, 0, NULL, objfile); | |
433759f7 | 4150 | |
1300f5dd JB |
4151 | TYPE_TARGET_TYPE (complex_type) = float_type; |
4152 | return complex_type; | |
c906108c SS |
4153 | } |
4154 | else | |
1300f5dd | 4155 | return float_type; |
c906108c SS |
4156 | } |
4157 | ||
a2699720 | 4158 | /* If the upper bound is -1, it must really be an unsigned integral. */ |
c906108c SS |
4159 | |
4160 | else if (n2 == 0 && n3 == -1) | |
4161 | { | |
a2699720 | 4162 | int bits = type_size; |
433759f7 | 4163 | |
a2699720 PA |
4164 | if (bits <= 0) |
4165 | { | |
4166 | /* We don't know its size. It is unsigned int or unsigned | |
4167 | long. GCC 2.3.3 uses this for long long too, but that is | |
4168 | just a GDB 3.5 compatibility hack. */ | |
5e2b427d | 4169 | bits = gdbarch_int_bit (gdbarch); |
a2699720 PA |
4170 | } |
4171 | ||
4172 | return init_type (TYPE_CODE_INT, bits / TARGET_CHAR_BIT, | |
c906108c SS |
4173 | TYPE_FLAG_UNSIGNED, NULL, objfile); |
4174 | } | |
4175 | ||
4176 | /* Special case: char is defined (Who knows why) as a subrange of | |
4177 | itself with range 0-127. */ | |
4178 | else if (self_subrange && n2 == 0 && n3 == 127) | |
973ccf8b | 4179 | return init_type (TYPE_CODE_INT, 1, TYPE_FLAG_NOSIGN, NULL, objfile); |
c906108c | 4180 | |
c906108c SS |
4181 | /* We used to do this only for subrange of self or subrange of int. */ |
4182 | else if (n2 == 0) | |
4183 | { | |
a0b3c4fd JM |
4184 | /* -1 is used for the upper bound of (4 byte) "unsigned int" and |
4185 | "unsigned long", and we already checked for that, | |
4186 | so don't need to test for it here. */ | |
4187 | ||
c906108c SS |
4188 | if (n3 < 0) |
4189 | /* n3 actually gives the size. */ | |
c5aa993b | 4190 | return init_type (TYPE_CODE_INT, -n3, TYPE_FLAG_UNSIGNED, |
c906108c | 4191 | NULL, objfile); |
c906108c | 4192 | |
7be570e7 | 4193 | /* Is n3 == 2**(8n)-1 for some integer n? Then it's an |
a0b3c4fd JM |
4194 | unsigned n-byte integer. But do require n to be a power of |
4195 | two; we don't want 3- and 5-byte integers flying around. */ | |
4196 | { | |
4197 | int bytes; | |
4198 | unsigned long bits; | |
4199 | ||
4200 | bits = n3; | |
4201 | for (bytes = 0; (bits & 0xff) == 0xff; bytes++) | |
4202 | bits >>= 8; | |
4203 | if (bits == 0 | |
4204 | && ((bytes - 1) & bytes) == 0) /* "bytes is a power of two" */ | |
4205 | return init_type (TYPE_CODE_INT, bytes, TYPE_FLAG_UNSIGNED, NULL, | |
4206 | objfile); | |
4207 | } | |
c906108c SS |
4208 | } |
4209 | /* I think this is for Convex "long long". Since I don't know whether | |
4210 | Convex sets self_subrange, I also accept that particular size regardless | |
4211 | of self_subrange. */ | |
4212 | else if (n3 == 0 && n2 < 0 | |
4213 | && (self_subrange | |
9a76efb6 | 4214 | || n2 == -gdbarch_long_long_bit |
5e2b427d | 4215 | (gdbarch) / TARGET_CHAR_BIT)) |
c5aa993b JM |
4216 | return init_type (TYPE_CODE_INT, -n2, 0, NULL, objfile); |
4217 | else if (n2 == -n3 - 1) | |
c906108c SS |
4218 | { |
4219 | if (n3 == 0x7f) | |
4220 | return init_type (TYPE_CODE_INT, 1, 0, NULL, objfile); | |
4221 | if (n3 == 0x7fff) | |
4222 | return init_type (TYPE_CODE_INT, 2, 0, NULL, objfile); | |
4223 | if (n3 == 0x7fffffff) | |
4224 | return init_type (TYPE_CODE_INT, 4, 0, NULL, objfile); | |
4225 | } | |
4226 | ||
4227 | /* We have a real range type on our hands. Allocate space and | |
4228 | return a real pointer. */ | |
c5aa993b | 4229 | handle_true_range: |
c906108c SS |
4230 | |
4231 | if (self_subrange) | |
46bf5051 | 4232 | index_type = objfile_type (objfile)->builtin_int; |
c906108c | 4233 | else |
46bf5051 | 4234 | index_type = *dbx_lookup_type (rangenums, objfile); |
c906108c SS |
4235 | if (index_type == NULL) |
4236 | { | |
4237 | /* Does this actually ever happen? Is that why we are worrying | |
4238 | about dealing with it rather than just calling error_type? */ | |
4239 | ||
23136709 | 4240 | complaint (&symfile_complaints, |
e2e0b3e5 | 4241 | _("base type %d of range type is not defined"), rangenums[1]); |
5e2b427d | 4242 | |
46bf5051 | 4243 | index_type = objfile_type (objfile)->builtin_int; |
c906108c SS |
4244 | } |
4245 | ||
0c9c3474 SA |
4246 | result_type |
4247 | = create_static_range_type ((struct type *) NULL, index_type, n2, n3); | |
c906108c SS |
4248 | return (result_type); |
4249 | } | |
4250 | ||
4251 | /* Read in an argument list. This is a list of types, separated by commas | |
0a029df5 DJ |
4252 | and terminated with END. Return the list of types read in, or NULL |
4253 | if there is an error. */ | |
c906108c | 4254 | |
ad2f7632 DJ |
4255 | static struct field * |
4256 | read_args (char **pp, int end, struct objfile *objfile, int *nargsp, | |
4257 | int *varargsp) | |
c906108c SS |
4258 | { |
4259 | /* FIXME! Remove this arbitrary limit! */ | |
c378eb4e | 4260 | struct type *types[1024]; /* Allow for fns of 1023 parameters. */ |
ad2f7632 DJ |
4261 | int n = 0, i; |
4262 | struct field *rval; | |
c906108c SS |
4263 | |
4264 | while (**pp != end) | |
4265 | { | |
4266 | if (**pp != ',') | |
4267 | /* Invalid argument list: no ','. */ | |
0a029df5 | 4268 | return NULL; |
c906108c SS |
4269 | (*pp)++; |
4270 | STABS_CONTINUE (pp, objfile); | |
4271 | types[n++] = read_type (pp, objfile); | |
4272 | } | |
c378eb4e | 4273 | (*pp)++; /* get past `end' (the ':' character). */ |
c906108c | 4274 | |
d24d8548 JK |
4275 | if (n == 0) |
4276 | { | |
4277 | /* We should read at least the THIS parameter here. Some broken stabs | |
4278 | output contained `(0,41),(0,42)=@s8;-16;,(0,43),(0,1);' where should | |
4279 | have been present ";-16,(0,43)" reference instead. This way the | |
4280 | excessive ";" marker prematurely stops the parameters parsing. */ | |
4281 | ||
4282 | complaint (&symfile_complaints, _("Invalid (empty) method arguments")); | |
4283 | *varargsp = 0; | |
4284 | } | |
4285 | else if (TYPE_CODE (types[n - 1]) != TYPE_CODE_VOID) | |
ad2f7632 | 4286 | *varargsp = 1; |
c906108c SS |
4287 | else |
4288 | { | |
ad2f7632 DJ |
4289 | n--; |
4290 | *varargsp = 0; | |
c906108c | 4291 | } |
ad2f7632 DJ |
4292 | |
4293 | rval = (struct field *) xmalloc (n * sizeof (struct field)); | |
4294 | memset (rval, 0, n * sizeof (struct field)); | |
4295 | for (i = 0; i < n; i++) | |
4296 | rval[i].type = types[i]; | |
4297 | *nargsp = n; | |
c906108c SS |
4298 | return rval; |
4299 | } | |
4300 | \f | |
4301 | /* Common block handling. */ | |
4302 | ||
4303 | /* List of symbols declared since the last BCOMM. This list is a tail | |
4304 | of local_symbols. When ECOMM is seen, the symbols on the list | |
4305 | are noted so their proper addresses can be filled in later, | |
4306 | using the common block base address gotten from the assembler | |
4307 | stabs. */ | |
4308 | ||
4309 | static struct pending *common_block; | |
4310 | static int common_block_i; | |
4311 | ||
4312 | /* Name of the current common block. We get it from the BCOMM instead of the | |
4313 | ECOMM to match IBM documentation (even though IBM puts the name both places | |
4314 | like everyone else). */ | |
4315 | static char *common_block_name; | |
4316 | ||
4317 | /* Process a N_BCOMM symbol. The storage for NAME is not guaranteed | |
4318 | to remain after this function returns. */ | |
4319 | ||
4320 | void | |
fba45db2 | 4321 | common_block_start (char *name, struct objfile *objfile) |
c906108c SS |
4322 | { |
4323 | if (common_block_name != NULL) | |
4324 | { | |
23136709 | 4325 | complaint (&symfile_complaints, |
e2e0b3e5 | 4326 | _("Invalid symbol data: common block within common block")); |
c906108c SS |
4327 | } |
4328 | common_block = local_symbols; | |
4329 | common_block_i = local_symbols ? local_symbols->nsyms : 0; | |
10f0c4bb TT |
4330 | common_block_name = obstack_copy0 (&objfile->objfile_obstack, |
4331 | name, strlen (name)); | |
c906108c SS |
4332 | } |
4333 | ||
4334 | /* Process a N_ECOMM symbol. */ | |
4335 | ||
4336 | void | |
fba45db2 | 4337 | common_block_end (struct objfile *objfile) |
c906108c SS |
4338 | { |
4339 | /* Symbols declared since the BCOMM are to have the common block | |
4340 | start address added in when we know it. common_block and | |
4341 | common_block_i point to the first symbol after the BCOMM in | |
4342 | the local_symbols list; copy the list and hang it off the | |
4343 | symbol for the common block name for later fixup. */ | |
4344 | int i; | |
4345 | struct symbol *sym; | |
4346 | struct pending *new = 0; | |
4347 | struct pending *next; | |
4348 | int j; | |
4349 | ||
4350 | if (common_block_name == NULL) | |
4351 | { | |
e2e0b3e5 | 4352 | complaint (&symfile_complaints, _("ECOMM symbol unmatched by BCOMM")); |
c906108c SS |
4353 | return; |
4354 | } | |
4355 | ||
e623cf5d | 4356 | sym = allocate_symbol (objfile); |
c378eb4e | 4357 | /* Note: common_block_name already saved on objfile_obstack. */ |
3567439c | 4358 | SYMBOL_SET_LINKAGE_NAME (sym, common_block_name); |
f1e6e072 | 4359 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
c906108c SS |
4360 | |
4361 | /* Now we copy all the symbols which have been defined since the BCOMM. */ | |
4362 | ||
4363 | /* Copy all the struct pendings before common_block. */ | |
4364 | for (next = local_symbols; | |
4365 | next != NULL && next != common_block; | |
4366 | next = next->next) | |
4367 | { | |
4368 | for (j = 0; j < next->nsyms; j++) | |
4369 | add_symbol_to_list (next->symbol[j], &new); | |
4370 | } | |
4371 | ||
4372 | /* Copy however much of COMMON_BLOCK we need. If COMMON_BLOCK is | |
4373 | NULL, it means copy all the local symbols (which we already did | |
4374 | above). */ | |
4375 | ||
4376 | if (common_block != NULL) | |
4377 | for (j = common_block_i; j < common_block->nsyms; j++) | |
4378 | add_symbol_to_list (common_block->symbol[j], &new); | |
4379 | ||
4380 | SYMBOL_TYPE (sym) = (struct type *) new; | |
4381 | ||
4382 | /* Should we be putting local_symbols back to what it was? | |
4383 | Does it matter? */ | |
4384 | ||
3567439c | 4385 | i = hashname (SYMBOL_LINKAGE_NAME (sym)); |
c906108c SS |
4386 | SYMBOL_VALUE_CHAIN (sym) = global_sym_chain[i]; |
4387 | global_sym_chain[i] = sym; | |
4388 | common_block_name = NULL; | |
4389 | } | |
4390 | ||
4391 | /* Add a common block's start address to the offset of each symbol | |
4392 | declared to be in it (by being between a BCOMM/ECOMM pair that uses | |
4393 | the common block name). */ | |
4394 | ||
4395 | static void | |
46cb6474 | 4396 | fix_common_block (struct symbol *sym, CORE_ADDR valu) |
c906108c SS |
4397 | { |
4398 | struct pending *next = (struct pending *) SYMBOL_TYPE (sym); | |
433759f7 | 4399 | |
c5aa993b | 4400 | for (; next; next = next->next) |
c906108c | 4401 | { |
aa1ee363 | 4402 | int j; |
433759f7 | 4403 | |
c906108c SS |
4404 | for (j = next->nsyms - 1; j >= 0; j--) |
4405 | SYMBOL_VALUE_ADDRESS (next->symbol[j]) += valu; | |
4406 | } | |
4407 | } | |
c5aa993b | 4408 | \f |
c906108c SS |
4409 | |
4410 | ||
bf362611 JB |
4411 | /* Add {TYPE, TYPENUMS} to the NONAME_UNDEFS vector. |
4412 | See add_undefined_type for more details. */ | |
c906108c | 4413 | |
a7a48797 | 4414 | static void |
bf362611 JB |
4415 | add_undefined_type_noname (struct type *type, int typenums[2]) |
4416 | { | |
4417 | struct nat nat; | |
4418 | ||
4419 | nat.typenums[0] = typenums [0]; | |
4420 | nat.typenums[1] = typenums [1]; | |
4421 | nat.type = type; | |
4422 | ||
4423 | if (noname_undefs_length == noname_undefs_allocated) | |
4424 | { | |
4425 | noname_undefs_allocated *= 2; | |
4426 | noname_undefs = (struct nat *) | |
4427 | xrealloc ((char *) noname_undefs, | |
4428 | noname_undefs_allocated * sizeof (struct nat)); | |
4429 | } | |
4430 | noname_undefs[noname_undefs_length++] = nat; | |
4431 | } | |
4432 | ||
4433 | /* Add TYPE to the UNDEF_TYPES vector. | |
4434 | See add_undefined_type for more details. */ | |
4435 | ||
4436 | static void | |
4437 | add_undefined_type_1 (struct type *type) | |
c906108c SS |
4438 | { |
4439 | if (undef_types_length == undef_types_allocated) | |
4440 | { | |
4441 | undef_types_allocated *= 2; | |
4442 | undef_types = (struct type **) | |
4443 | xrealloc ((char *) undef_types, | |
4444 | undef_types_allocated * sizeof (struct type *)); | |
4445 | } | |
4446 | undef_types[undef_types_length++] = type; | |
4447 | } | |
4448 | ||
bf362611 JB |
4449 | /* What about types defined as forward references inside of a small lexical |
4450 | scope? */ | |
4451 | /* Add a type to the list of undefined types to be checked through | |
4452 | once this file has been read in. | |
4453 | ||
4454 | In practice, we actually maintain two such lists: The first list | |
4455 | (UNDEF_TYPES) is used for types whose name has been provided, and | |
4456 | concerns forward references (eg 'xs' or 'xu' forward references); | |
4457 | the second list (NONAME_UNDEFS) is used for types whose name is | |
4458 | unknown at creation time, because they were referenced through | |
4459 | their type number before the actual type was declared. | |
4460 | This function actually adds the given type to the proper list. */ | |
4461 | ||
4462 | static void | |
4463 | add_undefined_type (struct type *type, int typenums[2]) | |
4464 | { | |
4465 | if (TYPE_TAG_NAME (type) == NULL) | |
4466 | add_undefined_type_noname (type, typenums); | |
4467 | else | |
4468 | add_undefined_type_1 (type); | |
4469 | } | |
4470 | ||
4471 | /* Try to fix all undefined types pushed on the UNDEF_TYPES vector. */ | |
4472 | ||
2c0b251b | 4473 | static void |
46bf5051 | 4474 | cleanup_undefined_types_noname (struct objfile *objfile) |
bf362611 JB |
4475 | { |
4476 | int i; | |
4477 | ||
4478 | for (i = 0; i < noname_undefs_length; i++) | |
4479 | { | |
4480 | struct nat nat = noname_undefs[i]; | |
4481 | struct type **type; | |
4482 | ||
46bf5051 | 4483 | type = dbx_lookup_type (nat.typenums, objfile); |
bf362611 | 4484 | if (nat.type != *type && TYPE_CODE (*type) != TYPE_CODE_UNDEF) |
56953f80 JB |
4485 | { |
4486 | /* The instance flags of the undefined type are still unset, | |
4487 | and needs to be copied over from the reference type. | |
4488 | Since replace_type expects them to be identical, we need | |
4489 | to set these flags manually before hand. */ | |
4490 | TYPE_INSTANCE_FLAGS (nat.type) = TYPE_INSTANCE_FLAGS (*type); | |
4491 | replace_type (nat.type, *type); | |
4492 | } | |
bf362611 JB |
4493 | } |
4494 | ||
4495 | noname_undefs_length = 0; | |
4496 | } | |
4497 | ||
c906108c SS |
4498 | /* Go through each undefined type, see if it's still undefined, and fix it |
4499 | up if possible. We have two kinds of undefined types: | |
4500 | ||
4501 | TYPE_CODE_ARRAY: Array whose target type wasn't defined yet. | |
c5aa993b JM |
4502 | Fix: update array length using the element bounds |
4503 | and the target type's length. | |
c906108c | 4504 | TYPE_CODE_STRUCT, TYPE_CODE_UNION: Structure whose fields were not |
c5aa993b JM |
4505 | yet defined at the time a pointer to it was made. |
4506 | Fix: Do a full lookup on the struct/union tag. */ | |
bf362611 | 4507 | |
2c0b251b | 4508 | static void |
bf362611 | 4509 | cleanup_undefined_types_1 (void) |
c906108c SS |
4510 | { |
4511 | struct type **type; | |
4512 | ||
9e386756 JB |
4513 | /* Iterate over every undefined type, and look for a symbol whose type |
4514 | matches our undefined type. The symbol matches if: | |
4515 | 1. It is a typedef in the STRUCT domain; | |
4516 | 2. It has the same name, and same type code; | |
4517 | 3. The instance flags are identical. | |
4518 | ||
4519 | It is important to check the instance flags, because we have seen | |
4520 | examples where the debug info contained definitions such as: | |
4521 | ||
4522 | "foo_t:t30=B31=xefoo_t:" | |
4523 | ||
4524 | In this case, we have created an undefined type named "foo_t" whose | |
4525 | instance flags is null (when processing "xefoo_t"), and then created | |
4526 | another type with the same name, but with different instance flags | |
4527 | ('B' means volatile). I think that the definition above is wrong, | |
4528 | since the same type cannot be volatile and non-volatile at the same | |
4529 | time, but we need to be able to cope with it when it happens. The | |
4530 | approach taken here is to treat these two types as different. */ | |
4531 | ||
c906108c SS |
4532 | for (type = undef_types; type < undef_types + undef_types_length; type++) |
4533 | { | |
4534 | switch (TYPE_CODE (*type)) | |
4535 | { | |
4536 | ||
c5aa993b JM |
4537 | case TYPE_CODE_STRUCT: |
4538 | case TYPE_CODE_UNION: | |
4539 | case TYPE_CODE_ENUM: | |
c906108c SS |
4540 | { |
4541 | /* Check if it has been defined since. Need to do this here | |
4542 | as well as in check_typedef to deal with the (legitimate in | |
4543 | C though not C++) case of several types with the same name | |
4544 | in different source files. */ | |
74a9bb82 | 4545 | if (TYPE_STUB (*type)) |
c906108c SS |
4546 | { |
4547 | struct pending *ppt; | |
4548 | int i; | |
c378eb4e | 4549 | /* Name of the type, without "struct" or "union". */ |
0d5cff50 | 4550 | const char *typename = TYPE_TAG_NAME (*type); |
c906108c SS |
4551 | |
4552 | if (typename == NULL) | |
4553 | { | |
e2e0b3e5 | 4554 | complaint (&symfile_complaints, _("need a type name")); |
c906108c SS |
4555 | break; |
4556 | } | |
4557 | for (ppt = file_symbols; ppt; ppt = ppt->next) | |
4558 | { | |
4559 | for (i = 0; i < ppt->nsyms; i++) | |
4560 | { | |
4561 | struct symbol *sym = ppt->symbol[i]; | |
c5aa993b | 4562 | |
c906108c | 4563 | if (SYMBOL_CLASS (sym) == LOC_TYPEDEF |
176620f1 | 4564 | && SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN |
c906108c SS |
4565 | && (TYPE_CODE (SYMBOL_TYPE (sym)) == |
4566 | TYPE_CODE (*type)) | |
9e386756 JB |
4567 | && (TYPE_INSTANCE_FLAGS (*type) == |
4568 | TYPE_INSTANCE_FLAGS (SYMBOL_TYPE (sym))) | |
3567439c | 4569 | && strcmp (SYMBOL_LINKAGE_NAME (sym), |
9e386756 | 4570 | typename) == 0) |
13a393b0 | 4571 | replace_type (*type, SYMBOL_TYPE (sym)); |
c906108c SS |
4572 | } |
4573 | } | |
4574 | } | |
4575 | } | |
4576 | break; | |
4577 | ||
4578 | default: | |
4579 | { | |
23136709 | 4580 | complaint (&symfile_complaints, |
e2e0b3e5 AC |
4581 | _("forward-referenced types left unresolved, " |
4582 | "type code %d."), | |
23136709 | 4583 | TYPE_CODE (*type)); |
c906108c SS |
4584 | } |
4585 | break; | |
4586 | } | |
4587 | } | |
4588 | ||
4589 | undef_types_length = 0; | |
4590 | } | |
4591 | ||
bf362611 JB |
4592 | /* Try to fix all the undefined types we ecountered while processing |
4593 | this unit. */ | |
4594 | ||
4595 | void | |
0a0edcd5 | 4596 | cleanup_undefined_stabs_types (struct objfile *objfile) |
bf362611 JB |
4597 | { |
4598 | cleanup_undefined_types_1 (); | |
46bf5051 | 4599 | cleanup_undefined_types_noname (objfile); |
bf362611 JB |
4600 | } |
4601 | ||
c906108c SS |
4602 | /* Scan through all of the global symbols defined in the object file, |
4603 | assigning values to the debugging symbols that need to be assigned | |
4604 | to. Get these symbols from the minimal symbol table. */ | |
4605 | ||
4606 | void | |
fba45db2 | 4607 | scan_file_globals (struct objfile *objfile) |
c906108c SS |
4608 | { |
4609 | int hash; | |
4610 | struct minimal_symbol *msymbol; | |
507836c0 | 4611 | struct symbol *sym, *prev; |
c906108c SS |
4612 | struct objfile *resolve_objfile; |
4613 | ||
4614 | /* SVR4 based linkers copy referenced global symbols from shared | |
4615 | libraries to the main executable. | |
4616 | If we are scanning the symbols for a shared library, try to resolve | |
4617 | them from the minimal symbols of the main executable first. */ | |
4618 | ||
4619 | if (symfile_objfile && objfile != symfile_objfile) | |
4620 | resolve_objfile = symfile_objfile; | |
4621 | else | |
4622 | resolve_objfile = objfile; | |
4623 | ||
4624 | while (1) | |
4625 | { | |
4626 | /* Avoid expensive loop through all minimal symbols if there are | |
c5aa993b | 4627 | no unresolved symbols. */ |
c906108c SS |
4628 | for (hash = 0; hash < HASHSIZE; hash++) |
4629 | { | |
4630 | if (global_sym_chain[hash]) | |
4631 | break; | |
4632 | } | |
4633 | if (hash >= HASHSIZE) | |
4634 | return; | |
4635 | ||
3567439c | 4636 | ALL_OBJFILE_MSYMBOLS (resolve_objfile, msymbol) |
c906108c SS |
4637 | { |
4638 | QUIT; | |
4639 | ||
4640 | /* Skip static symbols. */ | |
4641 | switch (MSYMBOL_TYPE (msymbol)) | |
4642 | { | |
4643 | case mst_file_text: | |
4644 | case mst_file_data: | |
4645 | case mst_file_bss: | |
4646 | continue; | |
4647 | default: | |
4648 | break; | |
4649 | } | |
4650 | ||
4651 | prev = NULL; | |
4652 | ||
4653 | /* Get the hash index and check all the symbols | |
c378eb4e | 4654 | under that hash index. */ |
c906108c | 4655 | |
efd66ac6 | 4656 | hash = hashname (MSYMBOL_LINKAGE_NAME (msymbol)); |
c906108c SS |
4657 | |
4658 | for (sym = global_sym_chain[hash]; sym;) | |
4659 | { | |
efd66ac6 | 4660 | if (strcmp (MSYMBOL_LINKAGE_NAME (msymbol), |
3567439c | 4661 | SYMBOL_LINKAGE_NAME (sym)) == 0) |
c906108c | 4662 | { |
c906108c | 4663 | /* Splice this symbol out of the hash chain and |
c378eb4e | 4664 | assign the value we have to it. */ |
c906108c SS |
4665 | if (prev) |
4666 | { | |
4667 | SYMBOL_VALUE_CHAIN (prev) = SYMBOL_VALUE_CHAIN (sym); | |
4668 | } | |
4669 | else | |
4670 | { | |
4671 | global_sym_chain[hash] = SYMBOL_VALUE_CHAIN (sym); | |
4672 | } | |
c5aa993b | 4673 | |
c906108c SS |
4674 | /* Check to see whether we need to fix up a common block. */ |
4675 | /* Note: this code might be executed several times for | |
4676 | the same symbol if there are multiple references. */ | |
507836c0 | 4677 | if (sym) |
c906108c | 4678 | { |
507836c0 | 4679 | if (SYMBOL_CLASS (sym) == LOC_BLOCK) |
c906108c | 4680 | { |
507836c0 | 4681 | fix_common_block (sym, |
77e371c0 TT |
4682 | MSYMBOL_VALUE_ADDRESS (resolve_objfile, |
4683 | msymbol)); | |
c906108c SS |
4684 | } |
4685 | else | |
4686 | { | |
507836c0 | 4687 | SYMBOL_VALUE_ADDRESS (sym) |
77e371c0 | 4688 | = MSYMBOL_VALUE_ADDRESS (resolve_objfile, msymbol); |
c906108c | 4689 | } |
efd66ac6 | 4690 | SYMBOL_SECTION (sym) = MSYMBOL_SECTION (msymbol); |
c906108c SS |
4691 | } |
4692 | ||
c906108c SS |
4693 | if (prev) |
4694 | { | |
4695 | sym = SYMBOL_VALUE_CHAIN (prev); | |
4696 | } | |
4697 | else | |
4698 | { | |
4699 | sym = global_sym_chain[hash]; | |
4700 | } | |
4701 | } | |
4702 | else | |
4703 | { | |
4704 | prev = sym; | |
4705 | sym = SYMBOL_VALUE_CHAIN (sym); | |
4706 | } | |
4707 | } | |
4708 | } | |
4709 | if (resolve_objfile == objfile) | |
4710 | break; | |
4711 | resolve_objfile = objfile; | |
4712 | } | |
4713 | ||
4714 | /* Change the storage class of any remaining unresolved globals to | |
4715 | LOC_UNRESOLVED and remove them from the chain. */ | |
4716 | for (hash = 0; hash < HASHSIZE; hash++) | |
4717 | { | |
4718 | sym = global_sym_chain[hash]; | |
4719 | while (sym) | |
4720 | { | |
4721 | prev = sym; | |
4722 | sym = SYMBOL_VALUE_CHAIN (sym); | |
4723 | ||
4724 | /* Change the symbol address from the misleading chain value | |
4725 | to address zero. */ | |
4726 | SYMBOL_VALUE_ADDRESS (prev) = 0; | |
4727 | ||
4728 | /* Complain about unresolved common block symbols. */ | |
4729 | if (SYMBOL_CLASS (prev) == LOC_STATIC) | |
f1e6e072 | 4730 | SYMBOL_ACLASS_INDEX (prev) = LOC_UNRESOLVED; |
c906108c | 4731 | else |
23136709 | 4732 | complaint (&symfile_complaints, |
3e43a32a MS |
4733 | _("%s: common block `%s' from " |
4734 | "global_sym_chain unresolved"), | |
4262abfb | 4735 | objfile_name (objfile), SYMBOL_PRINT_NAME (prev)); |
c906108c SS |
4736 | } |
4737 | } | |
4738 | memset (global_sym_chain, 0, sizeof (global_sym_chain)); | |
4739 | } | |
4740 | ||
4741 | /* Initialize anything that needs initializing when starting to read | |
4742 | a fresh piece of a symbol file, e.g. reading in the stuff corresponding | |
4743 | to a psymtab. */ | |
4744 | ||
4745 | void | |
fba45db2 | 4746 | stabsread_init (void) |
c906108c SS |
4747 | { |
4748 | } | |
4749 | ||
4750 | /* Initialize anything that needs initializing when a completely new | |
4751 | symbol file is specified (not just adding some symbols from another | |
4752 | file, e.g. a shared library). */ | |
4753 | ||
4754 | void | |
fba45db2 | 4755 | stabsread_new_init (void) |
c906108c SS |
4756 | { |
4757 | /* Empty the hash table of global syms looking for values. */ | |
4758 | memset (global_sym_chain, 0, sizeof (global_sym_chain)); | |
4759 | } | |
4760 | ||
4761 | /* Initialize anything that needs initializing at the same time as | |
c378eb4e | 4762 | start_symtab() is called. */ |
c906108c | 4763 | |
c5aa993b | 4764 | void |
fba45db2 | 4765 | start_stabs (void) |
c906108c SS |
4766 | { |
4767 | global_stabs = NULL; /* AIX COFF */ | |
4768 | /* Leave FILENUM of 0 free for builtin types and this file's types. */ | |
4769 | n_this_object_header_files = 1; | |
4770 | type_vector_length = 0; | |
4771 | type_vector = (struct type **) 0; | |
4772 | ||
4773 | /* FIXME: If common_block_name is not already NULL, we should complain(). */ | |
4774 | common_block_name = NULL; | |
c906108c SS |
4775 | } |
4776 | ||
c378eb4e | 4777 | /* Call after end_symtab(). */ |
c906108c | 4778 | |
c5aa993b | 4779 | void |
fba45db2 | 4780 | end_stabs (void) |
c906108c SS |
4781 | { |
4782 | if (type_vector) | |
4783 | { | |
b8c9b27d | 4784 | xfree (type_vector); |
c906108c SS |
4785 | } |
4786 | type_vector = 0; | |
4787 | type_vector_length = 0; | |
4788 | previous_stab_code = 0; | |
4789 | } | |
4790 | ||
4791 | void | |
fba45db2 | 4792 | finish_global_stabs (struct objfile *objfile) |
c906108c SS |
4793 | { |
4794 | if (global_stabs) | |
4795 | { | |
4796 | patch_block_stabs (global_symbols, global_stabs, objfile); | |
b8c9b27d | 4797 | xfree (global_stabs); |
c906108c SS |
4798 | global_stabs = NULL; |
4799 | } | |
4800 | } | |
4801 | ||
7e1d63ec AF |
4802 | /* Find the end of the name, delimited by a ':', but don't match |
4803 | ObjC symbols which look like -[Foo bar::]:bla. */ | |
4804 | static char * | |
4805 | find_name_end (char *name) | |
4806 | { | |
4807 | char *s = name; | |
433759f7 | 4808 | |
7e1d63ec AF |
4809 | if (s[0] == '-' || *s == '+') |
4810 | { | |
4811 | /* Must be an ObjC method symbol. */ | |
4812 | if (s[1] != '[') | |
4813 | { | |
8a3fe4f8 | 4814 | error (_("invalid symbol name \"%s\""), name); |
7e1d63ec AF |
4815 | } |
4816 | s = strchr (s, ']'); | |
4817 | if (s == NULL) | |
4818 | { | |
8a3fe4f8 | 4819 | error (_("invalid symbol name \"%s\""), name); |
7e1d63ec AF |
4820 | } |
4821 | return strchr (s, ':'); | |
4822 | } | |
4823 | else | |
4824 | { | |
4825 | return strchr (s, ':'); | |
4826 | } | |
4827 | } | |
4828 | ||
c378eb4e | 4829 | /* Initializer for this module. */ |
c906108c SS |
4830 | |
4831 | void | |
fba45db2 | 4832 | _initialize_stabsread (void) |
c906108c | 4833 | { |
46bf5051 UW |
4834 | rs6000_builtin_type_data = register_objfile_data (); |
4835 | ||
c906108c SS |
4836 | undef_types_allocated = 20; |
4837 | undef_types_length = 0; | |
4838 | undef_types = (struct type **) | |
4839 | xmalloc (undef_types_allocated * sizeof (struct type *)); | |
bf362611 JB |
4840 | |
4841 | noname_undefs_allocated = 20; | |
4842 | noname_undefs_length = 0; | |
4843 | noname_undefs = (struct nat *) | |
4844 | xmalloc (noname_undefs_allocated * sizeof (struct nat)); | |
f1e6e072 TT |
4845 | |
4846 | stab_register_index = register_symbol_register_impl (LOC_REGISTER, | |
4847 | &stab_register_funcs); | |
4848 | stab_regparm_index = register_symbol_register_impl (LOC_REGPARM_ADDR, | |
4849 | &stab_register_funcs); | |
c906108c | 4850 | } |