Commit | Line | Data |
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c906108c | 1 | /* Support routines for decoding "stabs" debugging information format. |
cf5b2f1b | 2 | |
6aba47ca | 3 | Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, |
9b254dd1 | 4 | 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, |
4c38e0a4 | 5 | 2008, 2009, 2010 Free Software Foundation, Inc. |
c906108c | 6 | |
c5aa993b | 7 | This file is part of GDB. |
c906108c | 8 | |
c5aa993b JM |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 12 | (at your option) any later version. |
c906108c | 13 | |
c5aa993b JM |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
c906108c | 18 | |
c5aa993b | 19 | You should have received a copy of the GNU General Public License |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
21 | |
22 | /* Support routines for reading and decoding debugging information in | |
23 | the "stabs" format. This format is used with many systems that use | |
24 | the a.out object file format, as well as some systems that use | |
25 | COFF or ELF where the stabs data is placed in a special section. | |
26 | Avoid placing any object file format specific code in this file. */ | |
27 | ||
28 | #include "defs.h" | |
29 | #include "gdb_string.h" | |
30 | #include "bfd.h" | |
04ea0df1 | 31 | #include "gdb_obstack.h" |
c906108c SS |
32 | #include "symtab.h" |
33 | #include "gdbtypes.h" | |
34 | #include "expression.h" | |
35 | #include "symfile.h" | |
36 | #include "objfiles.h" | |
37 | #include "aout/stab_gnu.h" /* We always use GNU stabs, not native */ | |
38 | #include "libaout.h" | |
39 | #include "aout/aout64.h" | |
40 | #include "gdb-stabs.h" | |
41 | #include "buildsym.h" | |
42 | #include "complaints.h" | |
43 | #include "demangle.h" | |
44 | #include "language.h" | |
d16aafd8 | 45 | #include "doublest.h" |
de17c821 DJ |
46 | #include "cp-abi.h" |
47 | #include "cp-support.h" | |
8fb822e0 | 48 | #include "gdb_assert.h" |
c906108c SS |
49 | |
50 | #include <ctype.h> | |
51 | ||
52 | /* Ask stabsread.h to define the vars it normally declares `extern'. */ | |
c5aa993b JM |
53 | #define EXTERN |
54 | /**/ | |
c906108c SS |
55 | #include "stabsread.h" /* Our own declarations */ |
56 | #undef EXTERN | |
57 | ||
a14ed312 | 58 | extern void _initialize_stabsread (void); |
392a587b | 59 | |
c906108c SS |
60 | /* The routines that read and process a complete stabs for a C struct or |
61 | C++ class pass lists of data member fields and lists of member function | |
62 | fields in an instance of a field_info structure, as defined below. | |
63 | This is part of some reorganization of low level C++ support and is | |
64 | expected to eventually go away... (FIXME) */ | |
65 | ||
66 | struct field_info | |
c5aa993b JM |
67 | { |
68 | struct nextfield | |
69 | { | |
70 | struct nextfield *next; | |
c906108c | 71 | |
c5aa993b JM |
72 | /* This is the raw visibility from the stab. It is not checked |
73 | for being one of the visibilities we recognize, so code which | |
74 | examines this field better be able to deal. */ | |
75 | int visibility; | |
c906108c | 76 | |
c5aa993b JM |
77 | struct field field; |
78 | } | |
79 | *list; | |
80 | struct next_fnfieldlist | |
81 | { | |
82 | struct next_fnfieldlist *next; | |
83 | struct fn_fieldlist fn_fieldlist; | |
84 | } | |
85 | *fnlist; | |
86 | }; | |
c906108c SS |
87 | |
88 | static void | |
a14ed312 KB |
89 | read_one_struct_field (struct field_info *, char **, char *, |
90 | struct type *, struct objfile *); | |
c906108c | 91 | |
a14ed312 | 92 | static struct type *dbx_alloc_type (int[2], struct objfile *); |
c906108c | 93 | |
94e10a22 | 94 | static long read_huge_number (char **, int, int *, int); |
c906108c | 95 | |
a14ed312 | 96 | static struct type *error_type (char **, struct objfile *); |
c906108c SS |
97 | |
98 | static void | |
a14ed312 KB |
99 | patch_block_stabs (struct pending *, struct pending_stabs *, |
100 | struct objfile *); | |
c906108c | 101 | |
a14ed312 | 102 | static void fix_common_block (struct symbol *, int); |
c906108c | 103 | |
a14ed312 | 104 | static int read_type_number (char **, int *); |
c906108c | 105 | |
a7a48797 EZ |
106 | static struct type *read_type (char **, struct objfile *); |
107 | ||
94e10a22 | 108 | static struct type *read_range_type (char **, int[2], int, struct objfile *); |
c906108c | 109 | |
a14ed312 | 110 | static struct type *read_sun_builtin_type (char **, int[2], struct objfile *); |
c906108c | 111 | |
a14ed312 KB |
112 | static struct type *read_sun_floating_type (char **, int[2], |
113 | struct objfile *); | |
c906108c | 114 | |
a14ed312 | 115 | static struct type *read_enum_type (char **, struct type *, struct objfile *); |
c906108c | 116 | |
46bf5051 | 117 | static struct type *rs6000_builtin_type (int, struct objfile *); |
c906108c SS |
118 | |
119 | static int | |
a14ed312 KB |
120 | read_member_functions (struct field_info *, char **, struct type *, |
121 | struct objfile *); | |
c906108c SS |
122 | |
123 | static int | |
a14ed312 KB |
124 | read_struct_fields (struct field_info *, char **, struct type *, |
125 | struct objfile *); | |
c906108c SS |
126 | |
127 | static int | |
a14ed312 KB |
128 | read_baseclasses (struct field_info *, char **, struct type *, |
129 | struct objfile *); | |
c906108c SS |
130 | |
131 | static int | |
a14ed312 KB |
132 | read_tilde_fields (struct field_info *, char **, struct type *, |
133 | struct objfile *); | |
c906108c | 134 | |
a14ed312 | 135 | static int attach_fn_fields_to_type (struct field_info *, struct type *); |
c906108c | 136 | |
570b8f7c AC |
137 | static int attach_fields_to_type (struct field_info *, struct type *, |
138 | struct objfile *); | |
c906108c | 139 | |
a14ed312 | 140 | static struct type *read_struct_type (char **, struct type *, |
2ae1c2d2 | 141 | enum type_code, |
a14ed312 | 142 | struct objfile *); |
c906108c | 143 | |
a14ed312 KB |
144 | static struct type *read_array_type (char **, struct type *, |
145 | struct objfile *); | |
c906108c | 146 | |
ad2f7632 | 147 | static struct field *read_args (char **, int, struct objfile *, int *, int *); |
c906108c | 148 | |
bf362611 | 149 | static void add_undefined_type (struct type *, int[2]); |
a7a48797 | 150 | |
c906108c | 151 | static int |
a14ed312 KB |
152 | read_cpp_abbrev (struct field_info *, char **, struct type *, |
153 | struct objfile *); | |
c906108c | 154 | |
7e1d63ec AF |
155 | static char *find_name_end (char *name); |
156 | ||
a14ed312 | 157 | static int process_reference (char **string); |
c906108c | 158 | |
a14ed312 | 159 | void stabsread_clear_cache (void); |
7be570e7 | 160 | |
8343f86c DJ |
161 | static const char vptr_name[] = "_vptr$"; |
162 | static const char vb_name[] = "_vb$"; | |
c906108c | 163 | |
23136709 KB |
164 | static void |
165 | invalid_cpp_abbrev_complaint (const char *arg1) | |
166 | { | |
e2e0b3e5 | 167 | complaint (&symfile_complaints, _("invalid C++ abbreviation `%s'"), arg1); |
23136709 | 168 | } |
c906108c | 169 | |
23136709 | 170 | static void |
49b0b195 | 171 | reg_value_complaint (int regnum, int num_regs, const char *sym) |
23136709 KB |
172 | { |
173 | complaint (&symfile_complaints, | |
e2e0b3e5 | 174 | _("register number %d too large (max %d) in symbol %s"), |
49b0b195 | 175 | regnum, num_regs - 1, sym); |
23136709 | 176 | } |
c906108c | 177 | |
23136709 KB |
178 | static void |
179 | stabs_general_complaint (const char *arg1) | |
180 | { | |
181 | complaint (&symfile_complaints, "%s", arg1); | |
182 | } | |
c906108c | 183 | |
c906108c SS |
184 | /* Make a list of forward references which haven't been defined. */ |
185 | ||
186 | static struct type **undef_types; | |
187 | static int undef_types_allocated; | |
188 | static int undef_types_length; | |
189 | static struct symbol *current_symbol = NULL; | |
190 | ||
bf362611 JB |
191 | /* Make a list of nameless types that are undefined. |
192 | This happens when another type is referenced by its number | |
193 | before this type is actually defined. For instance "t(0,1)=k(0,2)" | |
194 | and type (0,2) is defined only later. */ | |
195 | ||
196 | struct nat | |
197 | { | |
198 | int typenums[2]; | |
199 | struct type *type; | |
200 | }; | |
201 | static struct nat *noname_undefs; | |
202 | static int noname_undefs_allocated; | |
203 | static int noname_undefs_length; | |
204 | ||
c906108c SS |
205 | /* Check for and handle cretinous stabs symbol name continuation! */ |
206 | #define STABS_CONTINUE(pp,objfile) \ | |
207 | do { \ | |
208 | if (**(pp) == '\\' || (**(pp) == '?' && (*(pp))[1] == '\0')) \ | |
209 | *(pp) = next_symbol_text (objfile); \ | |
210 | } while (0) | |
211 | \f | |
c906108c SS |
212 | |
213 | /* Look up a dbx type-number pair. Return the address of the slot | |
214 | where the type for that number-pair is stored. | |
215 | The number-pair is in TYPENUMS. | |
216 | ||
217 | This can be used for finding the type associated with that pair | |
218 | or for associating a new type with the pair. */ | |
219 | ||
a7a48797 | 220 | static struct type ** |
46bf5051 | 221 | dbx_lookup_type (int typenums[2], struct objfile *objfile) |
c906108c | 222 | { |
52f0bd74 AC |
223 | int filenum = typenums[0]; |
224 | int index = typenums[1]; | |
c906108c | 225 | unsigned old_len; |
52f0bd74 AC |
226 | int real_filenum; |
227 | struct header_file *f; | |
c906108c SS |
228 | int f_orig_length; |
229 | ||
230 | if (filenum == -1) /* -1,-1 is for temporary types. */ | |
231 | return 0; | |
232 | ||
233 | if (filenum < 0 || filenum >= n_this_object_header_files) | |
234 | { | |
23136709 | 235 | complaint (&symfile_complaints, |
e2e0b3e5 | 236 | _("Invalid symbol data: type number (%d,%d) out of range at symtab pos %d."), |
23136709 | 237 | filenum, index, symnum); |
c906108c SS |
238 | goto error_return; |
239 | } | |
240 | ||
241 | if (filenum == 0) | |
242 | { | |
243 | if (index < 0) | |
244 | { | |
245 | /* Caller wants address of address of type. We think | |
246 | that negative (rs6k builtin) types will never appear as | |
247 | "lvalues", (nor should they), so we stuff the real type | |
248 | pointer into a temp, and return its address. If referenced, | |
249 | this will do the right thing. */ | |
250 | static struct type *temp_type; | |
251 | ||
46bf5051 | 252 | temp_type = rs6000_builtin_type (index, objfile); |
c906108c SS |
253 | return &temp_type; |
254 | } | |
255 | ||
256 | /* Type is defined outside of header files. | |
c5aa993b | 257 | Find it in this object file's type vector. */ |
c906108c SS |
258 | if (index >= type_vector_length) |
259 | { | |
260 | old_len = type_vector_length; | |
261 | if (old_len == 0) | |
262 | { | |
263 | type_vector_length = INITIAL_TYPE_VECTOR_LENGTH; | |
264 | type_vector = (struct type **) | |
265 | xmalloc (type_vector_length * sizeof (struct type *)); | |
266 | } | |
267 | while (index >= type_vector_length) | |
268 | { | |
269 | type_vector_length *= 2; | |
270 | } | |
271 | type_vector = (struct type **) | |
272 | xrealloc ((char *) type_vector, | |
273 | (type_vector_length * sizeof (struct type *))); | |
274 | memset (&type_vector[old_len], 0, | |
275 | (type_vector_length - old_len) * sizeof (struct type *)); | |
c906108c SS |
276 | } |
277 | return (&type_vector[index]); | |
278 | } | |
279 | else | |
280 | { | |
281 | real_filenum = this_object_header_files[filenum]; | |
282 | ||
46bf5051 | 283 | if (real_filenum >= N_HEADER_FILES (objfile)) |
c906108c | 284 | { |
46bf5051 | 285 | static struct type *temp_type; |
c906108c | 286 | |
8a3fe4f8 | 287 | warning (_("GDB internal error: bad real_filenum")); |
c906108c SS |
288 | |
289 | error_return: | |
46bf5051 UW |
290 | temp_type = objfile_type (objfile)->builtin_error; |
291 | return &temp_type; | |
c906108c SS |
292 | } |
293 | ||
46bf5051 | 294 | f = HEADER_FILES (objfile) + real_filenum; |
c906108c SS |
295 | |
296 | f_orig_length = f->length; | |
297 | if (index >= f_orig_length) | |
298 | { | |
299 | while (index >= f->length) | |
300 | { | |
301 | f->length *= 2; | |
302 | } | |
303 | f->vector = (struct type **) | |
304 | xrealloc ((char *) f->vector, f->length * sizeof (struct type *)); | |
305 | memset (&f->vector[f_orig_length], 0, | |
306 | (f->length - f_orig_length) * sizeof (struct type *)); | |
307 | } | |
308 | return (&f->vector[index]); | |
309 | } | |
310 | } | |
311 | ||
312 | /* Make sure there is a type allocated for type numbers TYPENUMS | |
313 | and return the type object. | |
314 | This can create an empty (zeroed) type object. | |
315 | TYPENUMS may be (-1, -1) to return a new type object that is not | |
316 | put into the type vector, and so may not be referred to by number. */ | |
317 | ||
318 | static struct type * | |
35a2f538 | 319 | dbx_alloc_type (int typenums[2], struct objfile *objfile) |
c906108c | 320 | { |
52f0bd74 | 321 | struct type **type_addr; |
c906108c SS |
322 | |
323 | if (typenums[0] == -1) | |
324 | { | |
325 | return (alloc_type (objfile)); | |
326 | } | |
327 | ||
46bf5051 | 328 | type_addr = dbx_lookup_type (typenums, objfile); |
c906108c SS |
329 | |
330 | /* If we are referring to a type not known at all yet, | |
331 | allocate an empty type for it. | |
332 | We will fill it in later if we find out how. */ | |
333 | if (*type_addr == 0) | |
334 | { | |
335 | *type_addr = alloc_type (objfile); | |
336 | } | |
337 | ||
338 | return (*type_addr); | |
339 | } | |
340 | ||
341 | /* for all the stabs in a given stab vector, build appropriate types | |
342 | and fix their symbols in given symbol vector. */ | |
343 | ||
344 | static void | |
fba45db2 KB |
345 | patch_block_stabs (struct pending *symbols, struct pending_stabs *stabs, |
346 | struct objfile *objfile) | |
c906108c SS |
347 | { |
348 | int ii; | |
349 | char *name; | |
350 | char *pp; | |
351 | struct symbol *sym; | |
352 | ||
353 | if (stabs) | |
354 | { | |
c906108c | 355 | /* for all the stab entries, find their corresponding symbols and |
c5aa993b JM |
356 | patch their types! */ |
357 | ||
c906108c SS |
358 | for (ii = 0; ii < stabs->count; ++ii) |
359 | { | |
360 | name = stabs->stab[ii]; | |
c5aa993b | 361 | pp = (char *) strchr (name, ':'); |
8fb822e0 | 362 | gdb_assert (pp); /* Must find a ':' or game's over. */ |
c906108c SS |
363 | while (pp[1] == ':') |
364 | { | |
c5aa993b JM |
365 | pp += 2; |
366 | pp = (char *) strchr (pp, ':'); | |
c906108c | 367 | } |
c5aa993b | 368 | sym = find_symbol_in_list (symbols, name, pp - name); |
c906108c SS |
369 | if (!sym) |
370 | { | |
371 | /* FIXME-maybe: it would be nice if we noticed whether | |
c5aa993b JM |
372 | the variable was defined *anywhere*, not just whether |
373 | it is defined in this compilation unit. But neither | |
374 | xlc or GCC seem to need such a definition, and until | |
375 | we do psymtabs (so that the minimal symbols from all | |
376 | compilation units are available now), I'm not sure | |
377 | how to get the information. */ | |
c906108c SS |
378 | |
379 | /* On xcoff, if a global is defined and never referenced, | |
c5aa993b JM |
380 | ld will remove it from the executable. There is then |
381 | a N_GSYM stab for it, but no regular (C_EXT) symbol. */ | |
c906108c | 382 | sym = (struct symbol *) |
4a146b47 | 383 | obstack_alloc (&objfile->objfile_obstack, |
c906108c SS |
384 | sizeof (struct symbol)); |
385 | ||
386 | memset (sym, 0, sizeof (struct symbol)); | |
176620f1 | 387 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c | 388 | SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT; |
3567439c DJ |
389 | SYMBOL_SET_LINKAGE_NAME |
390 | (sym, obsavestring (name, pp - name, | |
391 | &objfile->objfile_obstack)); | |
c906108c | 392 | pp += 2; |
c5aa993b | 393 | if (*(pp - 1) == 'F' || *(pp - 1) == 'f') |
c906108c SS |
394 | { |
395 | /* I don't think the linker does this with functions, | |
396 | so as far as I know this is never executed. | |
397 | But it doesn't hurt to check. */ | |
398 | SYMBOL_TYPE (sym) = | |
399 | lookup_function_type (read_type (&pp, objfile)); | |
400 | } | |
401 | else | |
402 | { | |
403 | SYMBOL_TYPE (sym) = read_type (&pp, objfile); | |
404 | } | |
405 | add_symbol_to_list (sym, &global_symbols); | |
406 | } | |
407 | else | |
408 | { | |
409 | pp += 2; | |
c5aa993b | 410 | if (*(pp - 1) == 'F' || *(pp - 1) == 'f') |
c906108c SS |
411 | { |
412 | SYMBOL_TYPE (sym) = | |
413 | lookup_function_type (read_type (&pp, objfile)); | |
414 | } | |
415 | else | |
416 | { | |
417 | SYMBOL_TYPE (sym) = read_type (&pp, objfile); | |
418 | } | |
419 | } | |
420 | } | |
421 | } | |
422 | } | |
c906108c | 423 | \f |
c5aa993b | 424 | |
c906108c SS |
425 | /* Read a number by which a type is referred to in dbx data, |
426 | or perhaps read a pair (FILENUM, TYPENUM) in parentheses. | |
427 | Just a single number N is equivalent to (0,N). | |
428 | Return the two numbers by storing them in the vector TYPENUMS. | |
429 | TYPENUMS will then be used as an argument to dbx_lookup_type. | |
430 | ||
431 | Returns 0 for success, -1 for error. */ | |
432 | ||
433 | static int | |
aa1ee363 | 434 | read_type_number (char **pp, int *typenums) |
c906108c SS |
435 | { |
436 | int nbits; | |
433759f7 | 437 | |
c906108c SS |
438 | if (**pp == '(') |
439 | { | |
440 | (*pp)++; | |
94e10a22 | 441 | typenums[0] = read_huge_number (pp, ',', &nbits, 0); |
c5aa993b JM |
442 | if (nbits != 0) |
443 | return -1; | |
94e10a22 | 444 | typenums[1] = read_huge_number (pp, ')', &nbits, 0); |
c5aa993b JM |
445 | if (nbits != 0) |
446 | return -1; | |
c906108c SS |
447 | } |
448 | else | |
449 | { | |
450 | typenums[0] = 0; | |
94e10a22 | 451 | typenums[1] = read_huge_number (pp, 0, &nbits, 0); |
c5aa993b JM |
452 | if (nbits != 0) |
453 | return -1; | |
c906108c SS |
454 | } |
455 | return 0; | |
456 | } | |
c906108c | 457 | \f |
c5aa993b | 458 | |
c906108c SS |
459 | #define VISIBILITY_PRIVATE '0' /* Stabs character for private field */ |
460 | #define VISIBILITY_PROTECTED '1' /* Stabs character for protected fld */ | |
461 | #define VISIBILITY_PUBLIC '2' /* Stabs character for public field */ | |
462 | #define VISIBILITY_IGNORE '9' /* Optimized out or zero length */ | |
463 | ||
c906108c SS |
464 | /* Structure for storing pointers to reference definitions for fast lookup |
465 | during "process_later". */ | |
466 | ||
467 | struct ref_map | |
468 | { | |
469 | char *stabs; | |
470 | CORE_ADDR value; | |
471 | struct symbol *sym; | |
472 | }; | |
473 | ||
474 | #define MAX_CHUNK_REFS 100 | |
475 | #define REF_CHUNK_SIZE (MAX_CHUNK_REFS * sizeof (struct ref_map)) | |
476 | #define REF_MAP_SIZE(ref_chunk) ((ref_chunk) * REF_CHUNK_SIZE) | |
477 | ||
c5aa993b | 478 | static struct ref_map *ref_map; |
c906108c SS |
479 | |
480 | /* Ptr to free cell in chunk's linked list. */ | |
c5aa993b | 481 | static int ref_count = 0; |
c906108c SS |
482 | |
483 | /* Number of chunks malloced. */ | |
484 | static int ref_chunk = 0; | |
485 | ||
7be570e7 JM |
486 | /* This file maintains a cache of stabs aliases found in the symbol |
487 | table. If the symbol table changes, this cache must be cleared | |
488 | or we are left holding onto data in invalid obstacks. */ | |
489 | void | |
fba45db2 | 490 | stabsread_clear_cache (void) |
7be570e7 JM |
491 | { |
492 | ref_count = 0; | |
493 | ref_chunk = 0; | |
494 | } | |
495 | ||
c906108c SS |
496 | /* Create array of pointers mapping refids to symbols and stab strings. |
497 | Add pointers to reference definition symbols and/or their values as we | |
498 | find them, using their reference numbers as our index. | |
499 | These will be used later when we resolve references. */ | |
500 | void | |
fba45db2 | 501 | ref_add (int refnum, struct symbol *sym, char *stabs, CORE_ADDR value) |
c906108c SS |
502 | { |
503 | if (ref_count == 0) | |
504 | ref_chunk = 0; | |
505 | if (refnum >= ref_count) | |
506 | ref_count = refnum + 1; | |
507 | if (ref_count > ref_chunk * MAX_CHUNK_REFS) | |
508 | { | |
c5aa993b | 509 | int new_slots = ref_count - ref_chunk * MAX_CHUNK_REFS; |
c906108c | 510 | int new_chunks = new_slots / MAX_CHUNK_REFS + 1; |
433759f7 | 511 | |
c906108c SS |
512 | ref_map = (struct ref_map *) |
513 | xrealloc (ref_map, REF_MAP_SIZE (ref_chunk + new_chunks)); | |
433759f7 MS |
514 | memset (ref_map + ref_chunk * MAX_CHUNK_REFS, 0, |
515 | new_chunks * REF_CHUNK_SIZE); | |
c906108c SS |
516 | ref_chunk += new_chunks; |
517 | } | |
518 | ref_map[refnum].stabs = stabs; | |
519 | ref_map[refnum].sym = sym; | |
520 | ref_map[refnum].value = value; | |
521 | } | |
522 | ||
523 | /* Return defined sym for the reference REFNUM. */ | |
524 | struct symbol * | |
fba45db2 | 525 | ref_search (int refnum) |
c906108c SS |
526 | { |
527 | if (refnum < 0 || refnum > ref_count) | |
528 | return 0; | |
529 | return ref_map[refnum].sym; | |
530 | } | |
531 | ||
c906108c SS |
532 | /* Parse a reference id in STRING and return the resulting |
533 | reference number. Move STRING beyond the reference id. */ | |
534 | ||
c5aa993b | 535 | static int |
fba45db2 | 536 | process_reference (char **string) |
c906108c SS |
537 | { |
538 | char *p; | |
539 | int refnum = 0; | |
540 | ||
c5aa993b JM |
541 | if (**string != '#') |
542 | return 0; | |
543 | ||
c906108c SS |
544 | /* Advance beyond the initial '#'. */ |
545 | p = *string + 1; | |
546 | ||
547 | /* Read number as reference id. */ | |
548 | while (*p && isdigit (*p)) | |
549 | { | |
550 | refnum = refnum * 10 + *p - '0'; | |
551 | p++; | |
552 | } | |
553 | *string = p; | |
554 | return refnum; | |
555 | } | |
556 | ||
557 | /* If STRING defines a reference, store away a pointer to the reference | |
558 | definition for later use. Return the reference number. */ | |
559 | ||
560 | int | |
fba45db2 | 561 | symbol_reference_defined (char **string) |
c906108c SS |
562 | { |
563 | char *p = *string; | |
564 | int refnum = 0; | |
565 | ||
566 | refnum = process_reference (&p); | |
567 | ||
568 | /* Defining symbols end in '=' */ | |
c5aa993b | 569 | if (*p == '=') |
c906108c | 570 | { |
c5aa993b | 571 | /* Symbol is being defined here. */ |
c906108c SS |
572 | *string = p + 1; |
573 | return refnum; | |
574 | } | |
575 | else | |
576 | { | |
577 | /* Must be a reference. Either the symbol has already been defined, | |
578 | or this is a forward reference to it. */ | |
579 | *string = p; | |
580 | return -1; | |
581 | } | |
582 | } | |
583 | ||
768a979c UW |
584 | static int |
585 | stab_reg_to_regnum (struct symbol *sym, struct gdbarch *gdbarch) | |
586 | { | |
587 | int regno = gdbarch_stab_reg_to_regnum (gdbarch, SYMBOL_VALUE (sym)); | |
588 | ||
589 | if (regno >= gdbarch_num_regs (gdbarch) | |
590 | + gdbarch_num_pseudo_regs (gdbarch)) | |
591 | { | |
592 | reg_value_complaint (regno, | |
593 | gdbarch_num_regs (gdbarch) | |
594 | + gdbarch_num_pseudo_regs (gdbarch), | |
595 | SYMBOL_PRINT_NAME (sym)); | |
596 | ||
597 | regno = gdbarch_sp_regnum (gdbarch); /* Known safe, though useless */ | |
598 | } | |
599 | ||
600 | return regno; | |
601 | } | |
602 | ||
603 | static const struct symbol_register_ops stab_register_funcs = { | |
604 | stab_reg_to_regnum | |
605 | }; | |
606 | ||
c906108c | 607 | struct symbol * |
fba45db2 KB |
608 | define_symbol (CORE_ADDR valu, char *string, int desc, int type, |
609 | struct objfile *objfile) | |
c906108c | 610 | { |
5e2b427d | 611 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
52f0bd74 | 612 | struct symbol *sym; |
7e1d63ec | 613 | char *p = (char *) find_name_end (string); |
c906108c SS |
614 | int deftype; |
615 | int synonym = 0; | |
52f0bd74 | 616 | int i; |
71c25dea | 617 | char *new_name = NULL; |
c906108c SS |
618 | |
619 | /* We would like to eliminate nameless symbols, but keep their types. | |
620 | E.g. stab entry ":t10=*2" should produce a type 10, which is a pointer | |
621 | to type 2, but, should not create a symbol to address that type. Since | |
622 | the symbol will be nameless, there is no way any user can refer to it. */ | |
623 | ||
624 | int nameless; | |
625 | ||
626 | /* Ignore syms with empty names. */ | |
627 | if (string[0] == 0) | |
628 | return 0; | |
629 | ||
630 | /* Ignore old-style symbols from cc -go */ | |
631 | if (p == 0) | |
632 | return 0; | |
633 | ||
634 | while (p[1] == ':') | |
635 | { | |
c5aa993b JM |
636 | p += 2; |
637 | p = strchr (p, ':'); | |
c906108c SS |
638 | } |
639 | ||
640 | /* If a nameless stab entry, all we need is the type, not the symbol. | |
641 | e.g. ":t10=*2" or a nameless enum like " :T16=ered:0,green:1,blue:2,;" */ | |
642 | nameless = (p == string || ((string[0] == ' ') && (string[1] == ':'))); | |
643 | ||
c5aa993b | 644 | current_symbol = sym = (struct symbol *) |
4a146b47 | 645 | obstack_alloc (&objfile->objfile_obstack, sizeof (struct symbol)); |
c906108c SS |
646 | memset (sym, 0, sizeof (struct symbol)); |
647 | ||
648 | switch (type & N_TYPE) | |
649 | { | |
650 | case N_TEXT: | |
b8fbeb18 | 651 | SYMBOL_SECTION (sym) = SECT_OFF_TEXT (objfile); |
c906108c SS |
652 | break; |
653 | case N_DATA: | |
b8fbeb18 | 654 | SYMBOL_SECTION (sym) = SECT_OFF_DATA (objfile); |
c906108c SS |
655 | break; |
656 | case N_BSS: | |
b8fbeb18 | 657 | SYMBOL_SECTION (sym) = SECT_OFF_BSS (objfile); |
c906108c SS |
658 | break; |
659 | } | |
660 | ||
661 | if (processing_gcc_compilation) | |
662 | { | |
663 | /* GCC 2.x puts the line number in desc. SunOS apparently puts in the | |
c5aa993b JM |
664 | number of bytes occupied by a type or object, which we ignore. */ |
665 | SYMBOL_LINE (sym) = desc; | |
c906108c SS |
666 | } |
667 | else | |
668 | { | |
c5aa993b | 669 | SYMBOL_LINE (sym) = 0; /* unknown */ |
c906108c SS |
670 | } |
671 | ||
672 | if (is_cplus_marker (string[0])) | |
673 | { | |
674 | /* Special GNU C++ names. */ | |
675 | switch (string[1]) | |
676 | { | |
c5aa993b | 677 | case 't': |
1c9e8358 | 678 | SYMBOL_SET_LINKAGE_NAME (sym, "this"); |
c5aa993b | 679 | break; |
c906108c | 680 | |
c5aa993b | 681 | case 'v': /* $vtbl_ptr_type */ |
c5aa993b | 682 | goto normal; |
c906108c | 683 | |
c5aa993b | 684 | case 'e': |
1c9e8358 | 685 | SYMBOL_SET_LINKAGE_NAME (sym, "eh_throw"); |
c5aa993b | 686 | break; |
c906108c | 687 | |
c5aa993b JM |
688 | case '_': |
689 | /* This was an anonymous type that was never fixed up. */ | |
690 | goto normal; | |
c906108c | 691 | |
c5aa993b JM |
692 | case 'X': |
693 | /* SunPRO (3.0 at least) static variable encoding. */ | |
5e2b427d | 694 | if (gdbarch_static_transform_name_p (gdbarch)) |
149ad273 UW |
695 | goto normal; |
696 | /* ... fall through ... */ | |
c906108c | 697 | |
c5aa993b | 698 | default: |
e2e0b3e5 | 699 | complaint (&symfile_complaints, _("Unknown C++ symbol name `%s'"), |
23136709 | 700 | string); |
c5aa993b | 701 | goto normal; /* Do *something* with it */ |
c906108c SS |
702 | } |
703 | } | |
c906108c SS |
704 | else |
705 | { | |
706 | normal: | |
33e5013e | 707 | SYMBOL_SET_LANGUAGE (sym, current_subfile->language); |
df8a16a1 | 708 | if (SYMBOL_LANGUAGE (sym) == language_cplus) |
71c25dea TT |
709 | { |
710 | char *name = alloca (p - string + 1); | |
433759f7 | 711 | |
71c25dea TT |
712 | memcpy (name, string, p - string); |
713 | name[p - string] = '\0'; | |
714 | new_name = cp_canonicalize_string (name); | |
71c25dea TT |
715 | } |
716 | if (new_name != NULL) | |
717 | { | |
04a679b8 | 718 | SYMBOL_SET_NAMES (sym, new_name, strlen (new_name), 1, objfile); |
71c25dea TT |
719 | xfree (new_name); |
720 | } | |
721 | else | |
04a679b8 | 722 | SYMBOL_SET_NAMES (sym, string, p - string, 1, objfile); |
45c58896 SW |
723 | |
724 | if (SYMBOL_LANGUAGE (sym) == language_cplus) | |
725 | cp_scan_for_anonymous_namespaces (sym); | |
726 | ||
c906108c SS |
727 | } |
728 | p++; | |
729 | ||
730 | /* Determine the type of name being defined. */ | |
731 | #if 0 | |
732 | /* Getting GDB to correctly skip the symbol on an undefined symbol | |
733 | descriptor and not ever dump core is a very dodgy proposition if | |
734 | we do things this way. I say the acorn RISC machine can just | |
735 | fix their compiler. */ | |
736 | /* The Acorn RISC machine's compiler can put out locals that don't | |
737 | start with "234=" or "(3,4)=", so assume anything other than the | |
738 | deftypes we know how to handle is a local. */ | |
739 | if (!strchr ("cfFGpPrStTvVXCR", *p)) | |
740 | #else | |
741 | if (isdigit (*p) || *p == '(' || *p == '-') | |
742 | #endif | |
743 | deftype = 'l'; | |
744 | else | |
745 | deftype = *p++; | |
746 | ||
747 | switch (deftype) | |
748 | { | |
749 | case 'c': | |
750 | /* c is a special case, not followed by a type-number. | |
c5aa993b JM |
751 | SYMBOL:c=iVALUE for an integer constant symbol. |
752 | SYMBOL:c=rVALUE for a floating constant symbol. | |
753 | SYMBOL:c=eTYPE,INTVALUE for an enum constant symbol. | |
754 | e.g. "b:c=e6,0" for "const b = blob1" | |
755 | (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */ | |
c906108c SS |
756 | if (*p != '=') |
757 | { | |
758 | SYMBOL_CLASS (sym) = LOC_CONST; | |
759 | SYMBOL_TYPE (sym) = error_type (&p, objfile); | |
176620f1 | 760 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
761 | add_symbol_to_list (sym, &file_symbols); |
762 | return sym; | |
763 | } | |
764 | ++p; | |
765 | switch (*p++) | |
766 | { | |
767 | case 'r': | |
768 | { | |
769 | double d = atof (p); | |
4e38b386 | 770 | gdb_byte *dbl_valu; |
6ccb9162 | 771 | struct type *dbl_type; |
c906108c SS |
772 | |
773 | /* FIXME-if-picky-about-floating-accuracy: Should be using | |
774 | target arithmetic to get the value. real.c in GCC | |
775 | probably has the necessary code. */ | |
776 | ||
46bf5051 | 777 | dbl_type = objfile_type (objfile)->builtin_double; |
4e38b386 | 778 | dbl_valu = |
4a146b47 | 779 | obstack_alloc (&objfile->objfile_obstack, |
6ccb9162 UW |
780 | TYPE_LENGTH (dbl_type)); |
781 | store_typed_floating (dbl_valu, dbl_type, d); | |
782 | ||
783 | SYMBOL_TYPE (sym) = dbl_type; | |
c906108c SS |
784 | SYMBOL_VALUE_BYTES (sym) = dbl_valu; |
785 | SYMBOL_CLASS (sym) = LOC_CONST_BYTES; | |
786 | } | |
787 | break; | |
788 | case 'i': | |
789 | { | |
790 | /* Defining integer constants this way is kind of silly, | |
791 | since 'e' constants allows the compiler to give not | |
792 | only the value, but the type as well. C has at least | |
793 | int, long, unsigned int, and long long as constant | |
794 | types; other languages probably should have at least | |
795 | unsigned as well as signed constants. */ | |
796 | ||
46bf5051 | 797 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_long; |
c906108c SS |
798 | SYMBOL_VALUE (sym) = atoi (p); |
799 | SYMBOL_CLASS (sym) = LOC_CONST; | |
800 | } | |
801 | break; | |
ec8a089a PM |
802 | |
803 | case 'c': | |
804 | { | |
805 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_char; | |
806 | SYMBOL_VALUE (sym) = atoi (p); | |
807 | SYMBOL_CLASS (sym) = LOC_CONST; | |
808 | } | |
809 | break; | |
810 | ||
811 | case 's': | |
812 | { | |
813 | struct type *range_type; | |
814 | int ind = 0; | |
815 | char quote = *p++; | |
ec8a089a PM |
816 | gdb_byte *string_local = (gdb_byte *) alloca (strlen (p)); |
817 | gdb_byte *string_value; | |
818 | ||
819 | if (quote != '\'' && quote != '"') | |
820 | { | |
821 | SYMBOL_CLASS (sym) = LOC_CONST; | |
822 | SYMBOL_TYPE (sym) = error_type (&p, objfile); | |
823 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; | |
824 | add_symbol_to_list (sym, &file_symbols); | |
825 | return sym; | |
826 | } | |
827 | ||
828 | /* Find matching quote, rejecting escaped quotes. */ | |
829 | while (*p && *p != quote) | |
830 | { | |
831 | if (*p == '\\' && p[1] == quote) | |
832 | { | |
833 | string_local[ind] = (gdb_byte) quote; | |
834 | ind++; | |
835 | p += 2; | |
836 | } | |
837 | else if (*p) | |
838 | { | |
839 | string_local[ind] = (gdb_byte) (*p); | |
840 | ind++; | |
841 | p++; | |
842 | } | |
843 | } | |
844 | if (*p != quote) | |
845 | { | |
846 | SYMBOL_CLASS (sym) = LOC_CONST; | |
847 | SYMBOL_TYPE (sym) = error_type (&p, objfile); | |
848 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; | |
849 | add_symbol_to_list (sym, &file_symbols); | |
850 | return sym; | |
851 | } | |
852 | ||
853 | /* NULL terminate the string. */ | |
854 | string_local[ind] = 0; | |
855 | range_type = create_range_type (NULL, | |
856 | objfile_type (objfile)->builtin_int, | |
857 | 0, ind); | |
858 | SYMBOL_TYPE (sym) = create_array_type (NULL, | |
859 | objfile_type (objfile)->builtin_char, | |
860 | range_type); | |
861 | string_value = obstack_alloc (&objfile->objfile_obstack, ind + 1); | |
862 | memcpy (string_value, string_local, ind + 1); | |
863 | p++; | |
864 | ||
865 | SYMBOL_VALUE_BYTES (sym) = string_value; | |
866 | SYMBOL_CLASS (sym) = LOC_CONST_BYTES; | |
867 | } | |
868 | break; | |
869 | ||
c906108c SS |
870 | case 'e': |
871 | /* SYMBOL:c=eTYPE,INTVALUE for a constant symbol whose value | |
872 | can be represented as integral. | |
873 | e.g. "b:c=e6,0" for "const b = blob1" | |
874 | (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */ | |
875 | { | |
876 | SYMBOL_CLASS (sym) = LOC_CONST; | |
877 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
878 | ||
879 | if (*p != ',') | |
880 | { | |
881 | SYMBOL_TYPE (sym) = error_type (&p, objfile); | |
882 | break; | |
883 | } | |
884 | ++p; | |
885 | ||
886 | /* If the value is too big to fit in an int (perhaps because | |
887 | it is unsigned), or something like that, we silently get | |
888 | a bogus value. The type and everything else about it is | |
889 | correct. Ideally, we should be using whatever we have | |
890 | available for parsing unsigned and long long values, | |
891 | however. */ | |
892 | SYMBOL_VALUE (sym) = atoi (p); | |
893 | } | |
894 | break; | |
895 | default: | |
896 | { | |
897 | SYMBOL_CLASS (sym) = LOC_CONST; | |
898 | SYMBOL_TYPE (sym) = error_type (&p, objfile); | |
899 | } | |
900 | } | |
176620f1 | 901 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
902 | add_symbol_to_list (sym, &file_symbols); |
903 | return sym; | |
904 | ||
905 | case 'C': | |
906 | /* The name of a caught exception. */ | |
907 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
908 | SYMBOL_CLASS (sym) = LOC_LABEL; | |
176620f1 | 909 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
910 | SYMBOL_VALUE_ADDRESS (sym) = valu; |
911 | add_symbol_to_list (sym, &local_symbols); | |
912 | break; | |
913 | ||
914 | case 'f': | |
915 | /* A static function definition. */ | |
916 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
917 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
176620f1 | 918 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
919 | add_symbol_to_list (sym, &file_symbols); |
920 | /* fall into process_function_types. */ | |
921 | ||
922 | process_function_types: | |
923 | /* Function result types are described as the result type in stabs. | |
c5aa993b JM |
924 | We need to convert this to the function-returning-type-X type |
925 | in GDB. E.g. "int" is converted to "function returning int". */ | |
c906108c SS |
926 | if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_FUNC) |
927 | SYMBOL_TYPE (sym) = lookup_function_type (SYMBOL_TYPE (sym)); | |
928 | ||
1e698235 DJ |
929 | /* All functions in C++ have prototypes. Stabs does not offer an |
930 | explicit way to identify prototyped or unprototyped functions, | |
931 | but both GCC and Sun CC emit stabs for the "call-as" type rather | |
932 | than the "declared-as" type for unprototyped functions, so | |
933 | we treat all functions as if they were prototyped. This is used | |
934 | primarily for promotion when calling the function from GDB. */ | |
876cecd0 | 935 | TYPE_PROTOTYPED (SYMBOL_TYPE (sym)) = 1; |
c906108c SS |
936 | |
937 | /* fall into process_prototype_types */ | |
938 | ||
939 | process_prototype_types: | |
940 | /* Sun acc puts declared types of arguments here. */ | |
941 | if (*p == ';') | |
942 | { | |
943 | struct type *ftype = SYMBOL_TYPE (sym); | |
944 | int nsemi = 0; | |
945 | int nparams = 0; | |
946 | char *p1 = p; | |
947 | ||
948 | /* Obtain a worst case guess for the number of arguments | |
949 | by counting the semicolons. */ | |
950 | while (*p1) | |
951 | { | |
952 | if (*p1++ == ';') | |
953 | nsemi++; | |
954 | } | |
955 | ||
956 | /* Allocate parameter information fields and fill them in. */ | |
957 | TYPE_FIELDS (ftype) = (struct field *) | |
958 | TYPE_ALLOC (ftype, nsemi * sizeof (struct field)); | |
959 | while (*p++ == ';') | |
960 | { | |
961 | struct type *ptype; | |
962 | ||
963 | /* A type number of zero indicates the start of varargs. | |
c5aa993b | 964 | FIXME: GDB currently ignores vararg functions. */ |
c906108c SS |
965 | if (p[0] == '0' && p[1] == '\0') |
966 | break; | |
967 | ptype = read_type (&p, objfile); | |
968 | ||
969 | /* The Sun compilers mark integer arguments, which should | |
c5aa993b JM |
970 | be promoted to the width of the calling conventions, with |
971 | a type which references itself. This type is turned into | |
972 | a TYPE_CODE_VOID type by read_type, and we have to turn | |
5e2b427d UW |
973 | it back into builtin_int here. |
974 | FIXME: Do we need a new builtin_promoted_int_arg ? */ | |
c906108c | 975 | if (TYPE_CODE (ptype) == TYPE_CODE_VOID) |
46bf5051 | 976 | ptype = objfile_type (objfile)->builtin_int; |
8176bb6d DJ |
977 | TYPE_FIELD_TYPE (ftype, nparams) = ptype; |
978 | TYPE_FIELD_ARTIFICIAL (ftype, nparams++) = 0; | |
c906108c SS |
979 | } |
980 | TYPE_NFIELDS (ftype) = nparams; | |
876cecd0 | 981 | TYPE_PROTOTYPED (ftype) = 1; |
c906108c SS |
982 | } |
983 | break; | |
984 | ||
985 | case 'F': | |
986 | /* A global function definition. */ | |
987 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
988 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
176620f1 | 989 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
990 | add_symbol_to_list (sym, &global_symbols); |
991 | goto process_function_types; | |
992 | ||
993 | case 'G': | |
994 | /* For a class G (global) symbol, it appears that the | |
c5aa993b JM |
995 | value is not correct. It is necessary to search for the |
996 | corresponding linker definition to find the value. | |
997 | These definitions appear at the end of the namelist. */ | |
c906108c SS |
998 | SYMBOL_TYPE (sym) = read_type (&p, objfile); |
999 | SYMBOL_CLASS (sym) = LOC_STATIC; | |
176620f1 | 1000 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c | 1001 | /* Don't add symbol references to global_sym_chain. |
c5aa993b JM |
1002 | Symbol references don't have valid names and wont't match up with |
1003 | minimal symbols when the global_sym_chain is relocated. | |
1004 | We'll fixup symbol references when we fixup the defining symbol. */ | |
3567439c | 1005 | if (SYMBOL_LINKAGE_NAME (sym) && SYMBOL_LINKAGE_NAME (sym)[0] != '#') |
c906108c | 1006 | { |
3567439c | 1007 | i = hashname (SYMBOL_LINKAGE_NAME (sym)); |
c5aa993b JM |
1008 | SYMBOL_VALUE_CHAIN (sym) = global_sym_chain[i]; |
1009 | global_sym_chain[i] = sym; | |
c906108c SS |
1010 | } |
1011 | add_symbol_to_list (sym, &global_symbols); | |
1012 | break; | |
1013 | ||
1014 | /* This case is faked by a conditional above, | |
c5aa993b JM |
1015 | when there is no code letter in the dbx data. |
1016 | Dbx data never actually contains 'l'. */ | |
c906108c SS |
1017 | case 's': |
1018 | case 'l': | |
1019 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
1020 | SYMBOL_CLASS (sym) = LOC_LOCAL; | |
1021 | SYMBOL_VALUE (sym) = valu; | |
176620f1 | 1022 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1023 | add_symbol_to_list (sym, &local_symbols); |
1024 | break; | |
1025 | ||
1026 | case 'p': | |
1027 | if (*p == 'F') | |
1028 | /* pF is a two-letter code that means a function parameter in Fortran. | |
1029 | The type-number specifies the type of the return value. | |
1030 | Translate it into a pointer-to-function type. */ | |
1031 | { | |
1032 | p++; | |
1033 | SYMBOL_TYPE (sym) | |
1034 | = lookup_pointer_type | |
c5aa993b | 1035 | (lookup_function_type (read_type (&p, objfile))); |
c906108c SS |
1036 | } |
1037 | else | |
1038 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
1039 | ||
7ca9f392 | 1040 | SYMBOL_CLASS (sym) = LOC_ARG; |
c906108c | 1041 | SYMBOL_VALUE (sym) = valu; |
176620f1 | 1042 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
2a2d4dc3 | 1043 | SYMBOL_IS_ARGUMENT (sym) = 1; |
c906108c SS |
1044 | add_symbol_to_list (sym, &local_symbols); |
1045 | ||
5e2b427d | 1046 | if (gdbarch_byte_order (gdbarch) != BFD_ENDIAN_BIG) |
c906108c SS |
1047 | { |
1048 | /* On little-endian machines, this crud is never necessary, | |
1049 | and, if the extra bytes contain garbage, is harmful. */ | |
1050 | break; | |
1051 | } | |
1052 | ||
1053 | /* If it's gcc-compiled, if it says `short', believe it. */ | |
f73e88f9 | 1054 | if (processing_gcc_compilation |
5e2b427d | 1055 | || gdbarch_believe_pcc_promotion (gdbarch)) |
c906108c SS |
1056 | break; |
1057 | ||
5e2b427d | 1058 | if (!gdbarch_believe_pcc_promotion (gdbarch)) |
7a292a7a | 1059 | { |
8ee56bcf AC |
1060 | /* If PCC says a parameter is a short or a char, it is |
1061 | really an int. */ | |
5e2b427d UW |
1062 | if (TYPE_LENGTH (SYMBOL_TYPE (sym)) |
1063 | < gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT | |
8ee56bcf | 1064 | && TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_INT) |
7a292a7a | 1065 | { |
8ee56bcf AC |
1066 | SYMBOL_TYPE (sym) = |
1067 | TYPE_UNSIGNED (SYMBOL_TYPE (sym)) | |
46bf5051 UW |
1068 | ? objfile_type (objfile)->builtin_unsigned_int |
1069 | : objfile_type (objfile)->builtin_int; | |
7a292a7a | 1070 | } |
8ee56bcf | 1071 | break; |
7a292a7a | 1072 | } |
c906108c SS |
1073 | |
1074 | case 'P': | |
1075 | /* acc seems to use P to declare the prototypes of functions that | |
1076 | are referenced by this file. gdb is not prepared to deal | |
1077 | with this extra information. FIXME, it ought to. */ | |
1078 | if (type == N_FUN) | |
1079 | { | |
1080 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
1081 | goto process_prototype_types; | |
1082 | } | |
c5aa993b | 1083 | /*FALLTHROUGH */ |
c906108c SS |
1084 | |
1085 | case 'R': | |
1086 | /* Parameter which is in a register. */ | |
1087 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
2a2d4dc3 | 1088 | SYMBOL_CLASS (sym) = LOC_REGISTER; |
768a979c | 1089 | SYMBOL_REGISTER_OPS (sym) = &stab_register_funcs; |
2a2d4dc3 | 1090 | SYMBOL_IS_ARGUMENT (sym) = 1; |
768a979c | 1091 | SYMBOL_VALUE (sym) = valu; |
176620f1 | 1092 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1093 | add_symbol_to_list (sym, &local_symbols); |
1094 | break; | |
1095 | ||
1096 | case 'r': | |
1097 | /* Register variable (either global or local). */ | |
1098 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
1099 | SYMBOL_CLASS (sym) = LOC_REGISTER; | |
768a979c UW |
1100 | SYMBOL_REGISTER_OPS (sym) = &stab_register_funcs; |
1101 | SYMBOL_VALUE (sym) = valu; | |
176620f1 | 1102 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1103 | if (within_function) |
1104 | { | |
192cb3d4 MK |
1105 | /* Sun cc uses a pair of symbols, one 'p' and one 'r', with |
1106 | the same name to represent an argument passed in a | |
1107 | register. GCC uses 'P' for the same case. So if we find | |
1108 | such a symbol pair we combine it into one 'P' symbol. | |
1109 | For Sun cc we need to do this regardless of | |
1110 | stabs_argument_has_addr, because the compiler puts out | |
1111 | the 'p' symbol even if it never saves the argument onto | |
1112 | the stack. | |
1113 | ||
1114 | On most machines, we want to preserve both symbols, so | |
1115 | that we can still get information about what is going on | |
1116 | with the stack (VAX for computing args_printed, using | |
1117 | stack slots instead of saved registers in backtraces, | |
1118 | etc.). | |
c906108c SS |
1119 | |
1120 | Note that this code illegally combines | |
c5aa993b | 1121 | main(argc) struct foo argc; { register struct foo argc; } |
c906108c SS |
1122 | but this case is considered pathological and causes a warning |
1123 | from a decent compiler. */ | |
1124 | ||
1125 | if (local_symbols | |
1126 | && local_symbols->nsyms > 0 | |
5e2b427d | 1127 | && gdbarch_stabs_argument_has_addr (gdbarch, SYMBOL_TYPE (sym))) |
c906108c SS |
1128 | { |
1129 | struct symbol *prev_sym; | |
433759f7 | 1130 | |
c906108c SS |
1131 | prev_sym = local_symbols->symbol[local_symbols->nsyms - 1]; |
1132 | if ((SYMBOL_CLASS (prev_sym) == LOC_REF_ARG | |
1133 | || SYMBOL_CLASS (prev_sym) == LOC_ARG) | |
3567439c DJ |
1134 | && strcmp (SYMBOL_LINKAGE_NAME (prev_sym), |
1135 | SYMBOL_LINKAGE_NAME (sym)) == 0) | |
c906108c | 1136 | { |
2a2d4dc3 | 1137 | SYMBOL_CLASS (prev_sym) = LOC_REGISTER; |
768a979c | 1138 | SYMBOL_REGISTER_OPS (prev_sym) = &stab_register_funcs; |
c906108c SS |
1139 | /* Use the type from the LOC_REGISTER; that is the type |
1140 | that is actually in that register. */ | |
1141 | SYMBOL_TYPE (prev_sym) = SYMBOL_TYPE (sym); | |
1142 | SYMBOL_VALUE (prev_sym) = SYMBOL_VALUE (sym); | |
1143 | sym = prev_sym; | |
1144 | break; | |
1145 | } | |
1146 | } | |
c5aa993b | 1147 | add_symbol_to_list (sym, &local_symbols); |
c906108c SS |
1148 | } |
1149 | else | |
c5aa993b | 1150 | add_symbol_to_list (sym, &file_symbols); |
c906108c SS |
1151 | break; |
1152 | ||
1153 | case 'S': | |
1154 | /* Static symbol at top level of file */ | |
1155 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
1156 | SYMBOL_CLASS (sym) = LOC_STATIC; | |
1157 | SYMBOL_VALUE_ADDRESS (sym) = valu; | |
5e2b427d UW |
1158 | if (gdbarch_static_transform_name_p (gdbarch) |
1159 | && gdbarch_static_transform_name (gdbarch, | |
3567439c DJ |
1160 | SYMBOL_LINKAGE_NAME (sym)) |
1161 | != SYMBOL_LINKAGE_NAME (sym)) | |
c5aa993b JM |
1162 | { |
1163 | struct minimal_symbol *msym; | |
433759f7 | 1164 | |
3567439c | 1165 | msym = lookup_minimal_symbol (SYMBOL_LINKAGE_NAME (sym), NULL, objfile); |
c5aa993b JM |
1166 | if (msym != NULL) |
1167 | { | |
3567439c DJ |
1168 | char *new_name = gdbarch_static_transform_name |
1169 | (gdbarch, SYMBOL_LINKAGE_NAME (sym)); | |
433759f7 | 1170 | |
3567439c | 1171 | SYMBOL_SET_LINKAGE_NAME (sym, new_name); |
c5aa993b JM |
1172 | SYMBOL_VALUE_ADDRESS (sym) = SYMBOL_VALUE_ADDRESS (msym); |
1173 | } | |
1174 | } | |
176620f1 | 1175 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1176 | add_symbol_to_list (sym, &file_symbols); |
1177 | break; | |
1178 | ||
1179 | case 't': | |
52eea4ce JB |
1180 | /* In Ada, there is no distinction between typedef and non-typedef; |
1181 | any type declaration implicitly has the equivalent of a typedef, | |
1182 | and thus 't' is in fact equivalent to 'Tt'. | |
1183 | ||
1184 | Therefore, for Ada units, we check the character immediately | |
1185 | before the 't', and if we do not find a 'T', then make sure to | |
1186 | create the associated symbol in the STRUCT_DOMAIN ('t' definitions | |
1187 | will be stored in the VAR_DOMAIN). If the symbol was indeed | |
1188 | defined as 'Tt' then the STRUCT_DOMAIN symbol will be created | |
1189 | elsewhere, so we don't need to take care of that. | |
1190 | ||
1191 | This is important to do, because of forward references: | |
1192 | The cleanup of undefined types stored in undef_types only uses | |
1193 | STRUCT_DOMAIN symbols to perform the replacement. */ | |
1194 | synonym = (SYMBOL_LANGUAGE (sym) == language_ada && p[-2] != 'T'); | |
1195 | ||
e2cd42dd | 1196 | /* Typedef */ |
c906108c SS |
1197 | SYMBOL_TYPE (sym) = read_type (&p, objfile); |
1198 | ||
1199 | /* For a nameless type, we don't want a create a symbol, thus we | |
c5aa993b JM |
1200 | did not use `sym'. Return without further processing. */ |
1201 | if (nameless) | |
1202 | return NULL; | |
c906108c SS |
1203 | |
1204 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
1205 | SYMBOL_VALUE (sym) = valu; | |
176620f1 | 1206 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c | 1207 | /* C++ vagaries: we may have a type which is derived from |
c5aa993b JM |
1208 | a base type which did not have its name defined when the |
1209 | derived class was output. We fill in the derived class's | |
1210 | base part member's name here in that case. */ | |
c906108c SS |
1211 | if (TYPE_NAME (SYMBOL_TYPE (sym)) != NULL) |
1212 | if ((TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_STRUCT | |
1213 | || TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_UNION) | |
1214 | && TYPE_N_BASECLASSES (SYMBOL_TYPE (sym))) | |
1215 | { | |
1216 | int j; | |
433759f7 | 1217 | |
c906108c SS |
1218 | for (j = TYPE_N_BASECLASSES (SYMBOL_TYPE (sym)) - 1; j >= 0; j--) |
1219 | if (TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym), j) == 0) | |
1220 | TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym), j) = | |
1221 | type_name_no_tag (TYPE_BASECLASS (SYMBOL_TYPE (sym), j)); | |
1222 | } | |
1223 | ||
1224 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == NULL) | |
1225 | { | |
1226 | /* gcc-2.6 or later (when using -fvtable-thunks) | |
1227 | emits a unique named type for a vtable entry. | |
1228 | Some gdb code depends on that specific name. */ | |
1229 | extern const char vtbl_ptr_name[]; | |
1230 | ||
1231 | if ((TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_PTR | |
3567439c | 1232 | && strcmp (SYMBOL_LINKAGE_NAME (sym), vtbl_ptr_name)) |
c906108c SS |
1233 | || TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_FUNC) |
1234 | { | |
1235 | /* If we are giving a name to a type such as "pointer to | |
c5aa993b JM |
1236 | foo" or "function returning foo", we better not set |
1237 | the TYPE_NAME. If the program contains "typedef char | |
1238 | *caddr_t;", we don't want all variables of type char | |
1239 | * to print as caddr_t. This is not just a | |
1240 | consequence of GDB's type management; PCC and GCC (at | |
1241 | least through version 2.4) both output variables of | |
1242 | either type char * or caddr_t with the type number | |
1243 | defined in the 't' symbol for caddr_t. If a future | |
1244 | compiler cleans this up it GDB is not ready for it | |
1245 | yet, but if it becomes ready we somehow need to | |
1246 | disable this check (without breaking the PCC/GCC2.4 | |
1247 | case). | |
1248 | ||
1249 | Sigh. | |
1250 | ||
1251 | Fortunately, this check seems not to be necessary | |
1252 | for anything except pointers or functions. */ | |
49d97c60 EZ |
1253 | /* ezannoni: 2000-10-26. This seems to apply for |
1254 | versions of gcc older than 2.8. This was the original | |
1255 | problem: with the following code gdb would tell that | |
1256 | the type for name1 is caddr_t, and func is char() | |
1257 | typedef char *caddr_t; | |
1258 | char *name2; | |
1259 | struct x | |
1260 | { | |
1261 | char *name1; | |
1262 | } xx; | |
1263 | char *func() | |
1264 | { | |
1265 | } | |
1266 | main () {} | |
1267 | */ | |
1268 | ||
1269 | /* Pascal accepts names for pointer types. */ | |
1270 | if (current_subfile->language == language_pascal) | |
1271 | { | |
3567439c | 1272 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_LINKAGE_NAME (sym); |
49d97c60 | 1273 | } |
c906108c SS |
1274 | } |
1275 | else | |
3567439c | 1276 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_LINKAGE_NAME (sym); |
c906108c SS |
1277 | } |
1278 | ||
1279 | add_symbol_to_list (sym, &file_symbols); | |
52eea4ce JB |
1280 | |
1281 | if (synonym) | |
1282 | { | |
1283 | /* Create the STRUCT_DOMAIN clone. */ | |
1284 | struct symbol *struct_sym = (struct symbol *) | |
1285 | obstack_alloc (&objfile->objfile_obstack, sizeof (struct symbol)); | |
1286 | ||
1287 | *struct_sym = *sym; | |
1288 | SYMBOL_CLASS (struct_sym) = LOC_TYPEDEF; | |
1289 | SYMBOL_VALUE (struct_sym) = valu; | |
1290 | SYMBOL_DOMAIN (struct_sym) = STRUCT_DOMAIN; | |
1291 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) | |
48cb83fd JK |
1292 | TYPE_NAME (SYMBOL_TYPE (sym)) = obconcat (&objfile->objfile_obstack, |
1293 | SYMBOL_LINKAGE_NAME (sym), | |
1294 | (char *) NULL); | |
52eea4ce JB |
1295 | add_symbol_to_list (struct_sym, &file_symbols); |
1296 | } | |
1297 | ||
c906108c SS |
1298 | break; |
1299 | ||
1300 | case 'T': | |
1301 | /* Struct, union, or enum tag. For GNU C++, this can be be followed | |
c5aa993b | 1302 | by 't' which means we are typedef'ing it as well. */ |
c906108c SS |
1303 | synonym = *p == 't'; |
1304 | ||
1305 | if (synonym) | |
1306 | p++; | |
c906108c SS |
1307 | |
1308 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
25caa7a8 | 1309 | |
c906108c | 1310 | /* For a nameless type, we don't want a create a symbol, thus we |
c5aa993b JM |
1311 | did not use `sym'. Return without further processing. */ |
1312 | if (nameless) | |
1313 | return NULL; | |
c906108c SS |
1314 | |
1315 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
1316 | SYMBOL_VALUE (sym) = valu; | |
176620f1 | 1317 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 1318 | if (TYPE_TAG_NAME (SYMBOL_TYPE (sym)) == 0) |
48cb83fd JK |
1319 | TYPE_TAG_NAME (SYMBOL_TYPE (sym)) = obconcat (&objfile->objfile_obstack, |
1320 | SYMBOL_LINKAGE_NAME (sym), | |
1321 | (char *) NULL); | |
c906108c SS |
1322 | add_symbol_to_list (sym, &file_symbols); |
1323 | ||
1324 | if (synonym) | |
1325 | { | |
1326 | /* Clone the sym and then modify it. */ | |
aa1ee363 | 1327 | struct symbol *typedef_sym = (struct symbol *) |
433759f7 MS |
1328 | obstack_alloc (&objfile->objfile_obstack, sizeof (struct symbol)); |
1329 | ||
c906108c SS |
1330 | *typedef_sym = *sym; |
1331 | SYMBOL_CLASS (typedef_sym) = LOC_TYPEDEF; | |
1332 | SYMBOL_VALUE (typedef_sym) = valu; | |
176620f1 | 1333 | SYMBOL_DOMAIN (typedef_sym) = VAR_DOMAIN; |
c906108c | 1334 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) |
48cb83fd JK |
1335 | TYPE_NAME (SYMBOL_TYPE (sym)) = obconcat (&objfile->objfile_obstack, |
1336 | SYMBOL_LINKAGE_NAME (sym), | |
1337 | (char *) NULL); | |
c906108c SS |
1338 | add_symbol_to_list (typedef_sym, &file_symbols); |
1339 | } | |
1340 | break; | |
1341 | ||
1342 | case 'V': | |
1343 | /* Static symbol of local scope */ | |
1344 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
1345 | SYMBOL_CLASS (sym) = LOC_STATIC; | |
1346 | SYMBOL_VALUE_ADDRESS (sym) = valu; | |
5e2b427d UW |
1347 | if (gdbarch_static_transform_name_p (gdbarch) |
1348 | && gdbarch_static_transform_name (gdbarch, | |
3567439c DJ |
1349 | SYMBOL_LINKAGE_NAME (sym)) |
1350 | != SYMBOL_LINKAGE_NAME (sym)) | |
c5aa993b JM |
1351 | { |
1352 | struct minimal_symbol *msym; | |
433759f7 MS |
1353 | |
1354 | msym = lookup_minimal_symbol (SYMBOL_LINKAGE_NAME (sym), | |
1355 | NULL, objfile); | |
c5aa993b JM |
1356 | if (msym != NULL) |
1357 | { | |
3567439c DJ |
1358 | char *new_name = gdbarch_static_transform_name |
1359 | (gdbarch, SYMBOL_LINKAGE_NAME (sym)); | |
433759f7 | 1360 | |
3567439c | 1361 | SYMBOL_SET_LINKAGE_NAME (sym, new_name); |
c5aa993b JM |
1362 | SYMBOL_VALUE_ADDRESS (sym) = SYMBOL_VALUE_ADDRESS (msym); |
1363 | } | |
1364 | } | |
176620f1 | 1365 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1366 | add_symbol_to_list (sym, &local_symbols); |
1367 | break; | |
1368 | ||
1369 | case 'v': | |
1370 | /* Reference parameter */ | |
1371 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
1372 | SYMBOL_CLASS (sym) = LOC_REF_ARG; | |
2a2d4dc3 | 1373 | SYMBOL_IS_ARGUMENT (sym) = 1; |
c906108c | 1374 | SYMBOL_VALUE (sym) = valu; |
176620f1 | 1375 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1376 | add_symbol_to_list (sym, &local_symbols); |
1377 | break; | |
1378 | ||
1379 | case 'a': | |
1380 | /* Reference parameter which is in a register. */ | |
1381 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
1382 | SYMBOL_CLASS (sym) = LOC_REGPARM_ADDR; | |
768a979c | 1383 | SYMBOL_REGISTER_OPS (sym) = &stab_register_funcs; |
2a2d4dc3 | 1384 | SYMBOL_IS_ARGUMENT (sym) = 1; |
768a979c | 1385 | SYMBOL_VALUE (sym) = valu; |
176620f1 | 1386 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1387 | add_symbol_to_list (sym, &local_symbols); |
1388 | break; | |
1389 | ||
1390 | case 'X': | |
1391 | /* This is used by Sun FORTRAN for "function result value". | |
c5aa993b JM |
1392 | Sun claims ("dbx and dbxtool interfaces", 2nd ed) |
1393 | that Pascal uses it too, but when I tried it Pascal used | |
1394 | "x:3" (local symbol) instead. */ | |
c906108c SS |
1395 | SYMBOL_TYPE (sym) = read_type (&p, objfile); |
1396 | SYMBOL_CLASS (sym) = LOC_LOCAL; | |
1397 | SYMBOL_VALUE (sym) = valu; | |
176620f1 | 1398 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1399 | add_symbol_to_list (sym, &local_symbols); |
1400 | break; | |
c906108c SS |
1401 | |
1402 | default: | |
1403 | SYMBOL_TYPE (sym) = error_type (&p, objfile); | |
1404 | SYMBOL_CLASS (sym) = LOC_CONST; | |
1405 | SYMBOL_VALUE (sym) = 0; | |
176620f1 | 1406 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1407 | add_symbol_to_list (sym, &file_symbols); |
1408 | break; | |
1409 | } | |
1410 | ||
192cb3d4 MK |
1411 | /* Some systems pass variables of certain types by reference instead |
1412 | of by value, i.e. they will pass the address of a structure (in a | |
1413 | register or on the stack) instead of the structure itself. */ | |
c906108c | 1414 | |
5e2b427d | 1415 | if (gdbarch_stabs_argument_has_addr (gdbarch, SYMBOL_TYPE (sym)) |
2a2d4dc3 | 1416 | && SYMBOL_IS_ARGUMENT (sym)) |
c906108c | 1417 | { |
2a2d4dc3 | 1418 | /* We have to convert LOC_REGISTER to LOC_REGPARM_ADDR (for |
192cb3d4 | 1419 | variables passed in a register). */ |
2a2d4dc3 | 1420 | if (SYMBOL_CLASS (sym) == LOC_REGISTER) |
192cb3d4 MK |
1421 | SYMBOL_CLASS (sym) = LOC_REGPARM_ADDR; |
1422 | /* Likewise for converting LOC_ARG to LOC_REF_ARG (for the 7th | |
1423 | and subsequent arguments on SPARC, for example). */ | |
1424 | else if (SYMBOL_CLASS (sym) == LOC_ARG) | |
1425 | SYMBOL_CLASS (sym) = LOC_REF_ARG; | |
c906108c SS |
1426 | } |
1427 | ||
c906108c SS |
1428 | return sym; |
1429 | } | |
1430 | ||
c906108c SS |
1431 | /* Skip rest of this symbol and return an error type. |
1432 | ||
1433 | General notes on error recovery: error_type always skips to the | |
1434 | end of the symbol (modulo cretinous dbx symbol name continuation). | |
1435 | Thus code like this: | |
1436 | ||
1437 | if (*(*pp)++ != ';') | |
c5aa993b | 1438 | return error_type (pp, objfile); |
c906108c SS |
1439 | |
1440 | is wrong because if *pp starts out pointing at '\0' (typically as the | |
1441 | result of an earlier error), it will be incremented to point to the | |
1442 | start of the next symbol, which might produce strange results, at least | |
1443 | if you run off the end of the string table. Instead use | |
1444 | ||
1445 | if (**pp != ';') | |
c5aa993b | 1446 | return error_type (pp, objfile); |
c906108c SS |
1447 | ++*pp; |
1448 | ||
1449 | or | |
1450 | ||
1451 | if (**pp != ';') | |
c5aa993b | 1452 | foo = error_type (pp, objfile); |
c906108c | 1453 | else |
c5aa993b | 1454 | ++*pp; |
c906108c SS |
1455 | |
1456 | And in case it isn't obvious, the point of all this hair is so the compiler | |
1457 | can define new types and new syntaxes, and old versions of the | |
1458 | debugger will be able to read the new symbol tables. */ | |
1459 | ||
1460 | static struct type * | |
fba45db2 | 1461 | error_type (char **pp, struct objfile *objfile) |
c906108c | 1462 | { |
e2e0b3e5 | 1463 | complaint (&symfile_complaints, _("couldn't parse type; debugger out of date?")); |
c906108c SS |
1464 | while (1) |
1465 | { | |
1466 | /* Skip to end of symbol. */ | |
1467 | while (**pp != '\0') | |
1468 | { | |
1469 | (*pp)++; | |
1470 | } | |
1471 | ||
1472 | /* Check for and handle cretinous dbx symbol name continuation! */ | |
1473 | if ((*pp)[-1] == '\\' || (*pp)[-1] == '?') | |
1474 | { | |
1475 | *pp = next_symbol_text (objfile); | |
1476 | } | |
1477 | else | |
1478 | { | |
1479 | break; | |
1480 | } | |
1481 | } | |
46bf5051 | 1482 | return objfile_type (objfile)->builtin_error; |
c906108c | 1483 | } |
c906108c | 1484 | \f |
c5aa993b | 1485 | |
c906108c SS |
1486 | /* Read type information or a type definition; return the type. Even |
1487 | though this routine accepts either type information or a type | |
1488 | definition, the distinction is relevant--some parts of stabsread.c | |
1489 | assume that type information starts with a digit, '-', or '(' in | |
1490 | deciding whether to call read_type. */ | |
1491 | ||
a7a48797 | 1492 | static struct type * |
aa1ee363 | 1493 | read_type (char **pp, struct objfile *objfile) |
c906108c | 1494 | { |
52f0bd74 | 1495 | struct type *type = 0; |
c906108c SS |
1496 | struct type *type1; |
1497 | int typenums[2]; | |
1498 | char type_descriptor; | |
1499 | ||
1500 | /* Size in bits of type if specified by a type attribute, or -1 if | |
1501 | there is no size attribute. */ | |
1502 | int type_size = -1; | |
1503 | ||
1504 | /* Used to distinguish string and bitstring from char-array and set. */ | |
1505 | int is_string = 0; | |
1506 | ||
e2cd42dd MS |
1507 | /* Used to distinguish vector from array. */ |
1508 | int is_vector = 0; | |
1509 | ||
c906108c SS |
1510 | /* Read type number if present. The type number may be omitted. |
1511 | for instance in a two-dimensional array declared with type | |
1512 | "ar1;1;10;ar1;1;10;4". */ | |
1513 | if ((**pp >= '0' && **pp <= '9') | |
1514 | || **pp == '(' | |
1515 | || **pp == '-') | |
1516 | { | |
1517 | if (read_type_number (pp, typenums) != 0) | |
1518 | return error_type (pp, objfile); | |
c5aa993b | 1519 | |
c906108c | 1520 | if (**pp != '=') |
8cfe231d JB |
1521 | { |
1522 | /* Type is not being defined here. Either it already | |
1523 | exists, or this is a forward reference to it. | |
1524 | dbx_alloc_type handles both cases. */ | |
1525 | type = dbx_alloc_type (typenums, objfile); | |
1526 | ||
1527 | /* If this is a forward reference, arrange to complain if it | |
1528 | doesn't get patched up by the time we're done | |
1529 | reading. */ | |
1530 | if (TYPE_CODE (type) == TYPE_CODE_UNDEF) | |
bf362611 | 1531 | add_undefined_type (type, typenums); |
8cfe231d JB |
1532 | |
1533 | return type; | |
1534 | } | |
c906108c SS |
1535 | |
1536 | /* Type is being defined here. */ | |
1537 | /* Skip the '='. | |
c5aa993b JM |
1538 | Also skip the type descriptor - we get it below with (*pp)[-1]. */ |
1539 | (*pp) += 2; | |
c906108c SS |
1540 | } |
1541 | else | |
1542 | { | |
1543 | /* 'typenums=' not present, type is anonymous. Read and return | |
c5aa993b | 1544 | the definition, but don't put it in the type vector. */ |
c906108c SS |
1545 | typenums[0] = typenums[1] = -1; |
1546 | (*pp)++; | |
1547 | } | |
1548 | ||
c5aa993b | 1549 | again: |
c906108c SS |
1550 | type_descriptor = (*pp)[-1]; |
1551 | switch (type_descriptor) | |
1552 | { | |
1553 | case 'x': | |
1554 | { | |
1555 | enum type_code code; | |
1556 | ||
1557 | /* Used to index through file_symbols. */ | |
1558 | struct pending *ppt; | |
1559 | int i; | |
c5aa993b | 1560 | |
c906108c SS |
1561 | /* Name including "struct", etc. */ |
1562 | char *type_name; | |
c5aa993b | 1563 | |
c906108c SS |
1564 | { |
1565 | char *from, *to, *p, *q1, *q2; | |
c5aa993b | 1566 | |
c906108c SS |
1567 | /* Set the type code according to the following letter. */ |
1568 | switch ((*pp)[0]) | |
1569 | { | |
1570 | case 's': | |
1571 | code = TYPE_CODE_STRUCT; | |
1572 | break; | |
1573 | case 'u': | |
1574 | code = TYPE_CODE_UNION; | |
1575 | break; | |
1576 | case 'e': | |
1577 | code = TYPE_CODE_ENUM; | |
1578 | break; | |
1579 | default: | |
1580 | { | |
1581 | /* Complain and keep going, so compilers can invent new | |
1582 | cross-reference types. */ | |
23136709 | 1583 | complaint (&symfile_complaints, |
e2e0b3e5 | 1584 | _("Unrecognized cross-reference type `%c'"), (*pp)[0]); |
c906108c SS |
1585 | code = TYPE_CODE_STRUCT; |
1586 | break; | |
1587 | } | |
1588 | } | |
c5aa993b | 1589 | |
c906108c SS |
1590 | q1 = strchr (*pp, '<'); |
1591 | p = strchr (*pp, ':'); | |
1592 | if (p == NULL) | |
1593 | return error_type (pp, objfile); | |
1594 | if (q1 && p > q1 && p[1] == ':') | |
1595 | { | |
1596 | int nesting_level = 0; | |
433759f7 | 1597 | |
c906108c SS |
1598 | for (q2 = q1; *q2; q2++) |
1599 | { | |
1600 | if (*q2 == '<') | |
1601 | nesting_level++; | |
1602 | else if (*q2 == '>') | |
1603 | nesting_level--; | |
1604 | else if (*q2 == ':' && nesting_level == 0) | |
1605 | break; | |
1606 | } | |
1607 | p = q2; | |
1608 | if (*p != ':') | |
1609 | return error_type (pp, objfile); | |
1610 | } | |
71c25dea TT |
1611 | type_name = NULL; |
1612 | if (current_subfile->language == language_cplus) | |
1613 | { | |
1614 | char *new_name, *name = alloca (p - *pp + 1); | |
433759f7 | 1615 | |
71c25dea TT |
1616 | memcpy (name, *pp, p - *pp); |
1617 | name[p - *pp] = '\0'; | |
1618 | new_name = cp_canonicalize_string (name); | |
1619 | if (new_name != NULL) | |
1620 | { | |
1621 | type_name = obsavestring (new_name, strlen (new_name), | |
1622 | &objfile->objfile_obstack); | |
1623 | xfree (new_name); | |
1624 | } | |
1625 | } | |
1626 | if (type_name == NULL) | |
1627 | { | |
1628 | to = type_name = | |
1629 | (char *) obstack_alloc (&objfile->objfile_obstack, p - *pp + 1); | |
1630 | ||
1631 | /* Copy the name. */ | |
1632 | from = *pp + 1; | |
1633 | while (from < p) | |
1634 | *to++ = *from++; | |
1635 | *to = '\0'; | |
1636 | } | |
c5aa993b | 1637 | |
c906108c SS |
1638 | /* Set the pointer ahead of the name which we just read, and |
1639 | the colon. */ | |
71c25dea | 1640 | *pp = p + 1; |
c906108c SS |
1641 | } |
1642 | ||
149d821b JB |
1643 | /* If this type has already been declared, then reuse the same |
1644 | type, rather than allocating a new one. This saves some | |
1645 | memory. */ | |
c906108c SS |
1646 | |
1647 | for (ppt = file_symbols; ppt; ppt = ppt->next) | |
1648 | for (i = 0; i < ppt->nsyms; i++) | |
1649 | { | |
1650 | struct symbol *sym = ppt->symbol[i]; | |
1651 | ||
1652 | if (SYMBOL_CLASS (sym) == LOC_TYPEDEF | |
176620f1 | 1653 | && SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN |
c906108c | 1654 | && (TYPE_CODE (SYMBOL_TYPE (sym)) == code) |
3567439c | 1655 | && strcmp (SYMBOL_LINKAGE_NAME (sym), type_name) == 0) |
c906108c | 1656 | { |
b99607ea | 1657 | obstack_free (&objfile->objfile_obstack, type_name); |
c906108c | 1658 | type = SYMBOL_TYPE (sym); |
149d821b | 1659 | if (typenums[0] != -1) |
46bf5051 | 1660 | *dbx_lookup_type (typenums, objfile) = type; |
c906108c SS |
1661 | return type; |
1662 | } | |
1663 | } | |
1664 | ||
1665 | /* Didn't find the type to which this refers, so we must | |
1666 | be dealing with a forward reference. Allocate a type | |
1667 | structure for it, and keep track of it so we can | |
1668 | fill in the rest of the fields when we get the full | |
1669 | type. */ | |
1670 | type = dbx_alloc_type (typenums, objfile); | |
1671 | TYPE_CODE (type) = code; | |
1672 | TYPE_TAG_NAME (type) = type_name; | |
c5aa993b | 1673 | INIT_CPLUS_SPECIFIC (type); |
876cecd0 | 1674 | TYPE_STUB (type) = 1; |
c906108c | 1675 | |
bf362611 | 1676 | add_undefined_type (type, typenums); |
c906108c SS |
1677 | return type; |
1678 | } | |
1679 | ||
c5aa993b | 1680 | case '-': /* RS/6000 built-in type */ |
c906108c SS |
1681 | case '0': |
1682 | case '1': | |
1683 | case '2': | |
1684 | case '3': | |
1685 | case '4': | |
1686 | case '5': | |
1687 | case '6': | |
1688 | case '7': | |
1689 | case '8': | |
1690 | case '9': | |
1691 | case '(': | |
1692 | (*pp)--; | |
1693 | ||
1694 | /* We deal with something like t(1,2)=(3,4)=... which | |
c5aa993b | 1695 | the Lucid compiler and recent gcc versions (post 2.7.3) use. */ |
c906108c SS |
1696 | |
1697 | /* Allocate and enter the typedef type first. | |
c5aa993b | 1698 | This handles recursive types. */ |
c906108c SS |
1699 | type = dbx_alloc_type (typenums, objfile); |
1700 | TYPE_CODE (type) = TYPE_CODE_TYPEDEF; | |
c5aa993b JM |
1701 | { |
1702 | struct type *xtype = read_type (pp, objfile); | |
433759f7 | 1703 | |
c906108c SS |
1704 | if (type == xtype) |
1705 | { | |
1706 | /* It's being defined as itself. That means it is "void". */ | |
1707 | TYPE_CODE (type) = TYPE_CODE_VOID; | |
1708 | TYPE_LENGTH (type) = 1; | |
1709 | } | |
1710 | else if (type_size >= 0 || is_string) | |
1711 | { | |
dd6bda65 DJ |
1712 | /* This is the absolute wrong way to construct types. Every |
1713 | other debug format has found a way around this problem and | |
1714 | the related problems with unnecessarily stubbed types; | |
1715 | someone motivated should attempt to clean up the issue | |
1716 | here as well. Once a type pointed to has been created it | |
13a393b0 JB |
1717 | should not be modified. |
1718 | ||
1719 | Well, it's not *absolutely* wrong. Constructing recursive | |
1720 | types (trees, linked lists) necessarily entails modifying | |
1721 | types after creating them. Constructing any loop structure | |
1722 | entails side effects. The Dwarf 2 reader does handle this | |
1723 | more gracefully (it never constructs more than once | |
1724 | instance of a type object, so it doesn't have to copy type | |
1725 | objects wholesale), but it still mutates type objects after | |
1726 | other folks have references to them. | |
1727 | ||
1728 | Keep in mind that this circularity/mutation issue shows up | |
1729 | at the source language level, too: C's "incomplete types", | |
1730 | for example. So the proper cleanup, I think, would be to | |
1731 | limit GDB's type smashing to match exactly those required | |
1732 | by the source language. So GDB could have a | |
1733 | "complete_this_type" function, but never create unnecessary | |
1734 | copies of a type otherwise. */ | |
dd6bda65 | 1735 | replace_type (type, xtype); |
c906108c SS |
1736 | TYPE_NAME (type) = NULL; |
1737 | TYPE_TAG_NAME (type) = NULL; | |
1738 | } | |
1739 | else | |
1740 | { | |
876cecd0 | 1741 | TYPE_TARGET_STUB (type) = 1; |
c906108c SS |
1742 | TYPE_TARGET_TYPE (type) = xtype; |
1743 | } | |
1744 | } | |
1745 | break; | |
1746 | ||
c5aa993b JM |
1747 | /* In the following types, we must be sure to overwrite any existing |
1748 | type that the typenums refer to, rather than allocating a new one | |
1749 | and making the typenums point to the new one. This is because there | |
1750 | may already be pointers to the existing type (if it had been | |
1751 | forward-referenced), and we must change it to a pointer, function, | |
1752 | reference, or whatever, *in-place*. */ | |
c906108c | 1753 | |
e2cd42dd | 1754 | case '*': /* Pointer to another type */ |
c906108c | 1755 | type1 = read_type (pp, objfile); |
46bf5051 | 1756 | type = make_pointer_type (type1, dbx_lookup_type (typenums, objfile)); |
c906108c SS |
1757 | break; |
1758 | ||
c5aa993b | 1759 | case '&': /* Reference to another type */ |
c906108c | 1760 | type1 = read_type (pp, objfile); |
46bf5051 | 1761 | type = make_reference_type (type1, dbx_lookup_type (typenums, objfile)); |
c906108c SS |
1762 | break; |
1763 | ||
c5aa993b | 1764 | case 'f': /* Function returning another type */ |
c906108c | 1765 | type1 = read_type (pp, objfile); |
0c8b41f1 | 1766 | type = make_function_type (type1, dbx_lookup_type (typenums, objfile)); |
c906108c SS |
1767 | break; |
1768 | ||
da966255 JB |
1769 | case 'g': /* Prototyped function. (Sun) */ |
1770 | { | |
1771 | /* Unresolved questions: | |
1772 | ||
1773 | - According to Sun's ``STABS Interface Manual'', for 'f' | |
1774 | and 'F' symbol descriptors, a `0' in the argument type list | |
1775 | indicates a varargs function. But it doesn't say how 'g' | |
1776 | type descriptors represent that info. Someone with access | |
1777 | to Sun's toolchain should try it out. | |
1778 | ||
1779 | - According to the comment in define_symbol (search for | |
1780 | `process_prototype_types:'), Sun emits integer arguments as | |
1781 | types which ref themselves --- like `void' types. Do we | |
1782 | have to deal with that here, too? Again, someone with | |
1783 | access to Sun's toolchain should try it out and let us | |
1784 | know. */ | |
1785 | ||
1786 | const char *type_start = (*pp) - 1; | |
1787 | struct type *return_type = read_type (pp, objfile); | |
1788 | struct type *func_type | |
46bf5051 | 1789 | = make_function_type (return_type, |
0c8b41f1 | 1790 | dbx_lookup_type (typenums, objfile)); |
da966255 JB |
1791 | struct type_list { |
1792 | struct type *type; | |
1793 | struct type_list *next; | |
1794 | } *arg_types = 0; | |
1795 | int num_args = 0; | |
1796 | ||
1797 | while (**pp && **pp != '#') | |
1798 | { | |
1799 | struct type *arg_type = read_type (pp, objfile); | |
1800 | struct type_list *new = alloca (sizeof (*new)); | |
1801 | new->type = arg_type; | |
1802 | new->next = arg_types; | |
1803 | arg_types = new; | |
1804 | num_args++; | |
1805 | } | |
1806 | if (**pp == '#') | |
1807 | ++*pp; | |
1808 | else | |
1809 | { | |
23136709 | 1810 | complaint (&symfile_complaints, |
e2e0b3e5 | 1811 | _("Prototyped function type didn't end arguments with `#':\n%s"), |
23136709 | 1812 | type_start); |
da966255 JB |
1813 | } |
1814 | ||
1815 | /* If there is just one argument whose type is `void', then | |
1816 | that's just an empty argument list. */ | |
1817 | if (arg_types | |
1818 | && ! arg_types->next | |
1819 | && TYPE_CODE (arg_types->type) == TYPE_CODE_VOID) | |
1820 | num_args = 0; | |
1821 | ||
1822 | TYPE_FIELDS (func_type) | |
1823 | = (struct field *) TYPE_ALLOC (func_type, | |
1824 | num_args * sizeof (struct field)); | |
1825 | memset (TYPE_FIELDS (func_type), 0, num_args * sizeof (struct field)); | |
1826 | { | |
1827 | int i; | |
1828 | struct type_list *t; | |
1829 | ||
1830 | /* We stuck each argument type onto the front of the list | |
1831 | when we read it, so the list is reversed. Build the | |
1832 | fields array right-to-left. */ | |
1833 | for (t = arg_types, i = num_args - 1; t; t = t->next, i--) | |
1834 | TYPE_FIELD_TYPE (func_type, i) = t->type; | |
1835 | } | |
1836 | TYPE_NFIELDS (func_type) = num_args; | |
876cecd0 | 1837 | TYPE_PROTOTYPED (func_type) = 1; |
da966255 JB |
1838 | |
1839 | type = func_type; | |
1840 | break; | |
1841 | } | |
1842 | ||
c5aa993b | 1843 | case 'k': /* Const qualifier on some type (Sun) */ |
c906108c | 1844 | type = read_type (pp, objfile); |
d7242108 | 1845 | type = make_cv_type (1, TYPE_VOLATILE (type), type, |
46bf5051 | 1846 | dbx_lookup_type (typenums, objfile)); |
c906108c SS |
1847 | break; |
1848 | ||
c5aa993b | 1849 | case 'B': /* Volatile qual on some type (Sun) */ |
c906108c | 1850 | type = read_type (pp, objfile); |
d7242108 | 1851 | type = make_cv_type (TYPE_CONST (type), 1, type, |
46bf5051 | 1852 | dbx_lookup_type (typenums, objfile)); |
c906108c SS |
1853 | break; |
1854 | ||
1855 | case '@': | |
c5aa993b JM |
1856 | if (isdigit (**pp) || **pp == '(' || **pp == '-') |
1857 | { /* Member (class & variable) type */ | |
c906108c SS |
1858 | /* FIXME -- we should be doing smash_to_XXX types here. */ |
1859 | ||
1860 | struct type *domain = read_type (pp, objfile); | |
1861 | struct type *memtype; | |
1862 | ||
1863 | if (**pp != ',') | |
1864 | /* Invalid member type data format. */ | |
1865 | return error_type (pp, objfile); | |
1866 | ++*pp; | |
1867 | ||
1868 | memtype = read_type (pp, objfile); | |
1869 | type = dbx_alloc_type (typenums, objfile); | |
0d5de010 | 1870 | smash_to_memberptr_type (type, domain, memtype); |
c906108c | 1871 | } |
c5aa993b JM |
1872 | else |
1873 | /* type attribute */ | |
c906108c SS |
1874 | { |
1875 | char *attr = *pp; | |
433759f7 | 1876 | |
c906108c SS |
1877 | /* Skip to the semicolon. */ |
1878 | while (**pp != ';' && **pp != '\0') | |
1879 | ++(*pp); | |
1880 | if (**pp == '\0') | |
1881 | return error_type (pp, objfile); | |
1882 | else | |
c5aa993b | 1883 | ++ * pp; /* Skip the semicolon. */ |
c906108c SS |
1884 | |
1885 | switch (*attr) | |
1886 | { | |
e2cd42dd | 1887 | case 's': /* Size attribute */ |
c906108c SS |
1888 | type_size = atoi (attr + 1); |
1889 | if (type_size <= 0) | |
1890 | type_size = -1; | |
1891 | break; | |
1892 | ||
e2cd42dd MS |
1893 | case 'S': /* String attribute */ |
1894 | /* FIXME: check to see if following type is array? */ | |
c906108c SS |
1895 | is_string = 1; |
1896 | break; | |
1897 | ||
e2cd42dd MS |
1898 | case 'V': /* Vector attribute */ |
1899 | /* FIXME: check to see if following type is array? */ | |
1900 | is_vector = 1; | |
1901 | break; | |
1902 | ||
c906108c SS |
1903 | default: |
1904 | /* Ignore unrecognized type attributes, so future compilers | |
c5aa993b | 1905 | can invent new ones. */ |
c906108c SS |
1906 | break; |
1907 | } | |
1908 | ++*pp; | |
1909 | goto again; | |
1910 | } | |
1911 | break; | |
1912 | ||
c5aa993b | 1913 | case '#': /* Method (class & fn) type */ |
c906108c SS |
1914 | if ((*pp)[0] == '#') |
1915 | { | |
1916 | /* We'll get the parameter types from the name. */ | |
1917 | struct type *return_type; | |
1918 | ||
1919 | (*pp)++; | |
1920 | return_type = read_type (pp, objfile); | |
1921 | if (*(*pp)++ != ';') | |
23136709 | 1922 | complaint (&symfile_complaints, |
e2e0b3e5 | 1923 | _("invalid (minimal) member type data format at symtab pos %d."), |
23136709 | 1924 | symnum); |
c906108c SS |
1925 | type = allocate_stub_method (return_type); |
1926 | if (typenums[0] != -1) | |
46bf5051 | 1927 | *dbx_lookup_type (typenums, objfile) = type; |
c906108c SS |
1928 | } |
1929 | else | |
1930 | { | |
1931 | struct type *domain = read_type (pp, objfile); | |
1932 | struct type *return_type; | |
ad2f7632 DJ |
1933 | struct field *args; |
1934 | int nargs, varargs; | |
c906108c SS |
1935 | |
1936 | if (**pp != ',') | |
1937 | /* Invalid member type data format. */ | |
1938 | return error_type (pp, objfile); | |
1939 | else | |
1940 | ++(*pp); | |
1941 | ||
1942 | return_type = read_type (pp, objfile); | |
ad2f7632 | 1943 | args = read_args (pp, ';', objfile, &nargs, &varargs); |
0a029df5 DJ |
1944 | if (args == NULL) |
1945 | return error_type (pp, objfile); | |
c906108c | 1946 | type = dbx_alloc_type (typenums, objfile); |
ad2f7632 DJ |
1947 | smash_to_method_type (type, domain, return_type, args, |
1948 | nargs, varargs); | |
c906108c SS |
1949 | } |
1950 | break; | |
1951 | ||
c5aa993b | 1952 | case 'r': /* Range type */ |
94e10a22 | 1953 | type = read_range_type (pp, typenums, type_size, objfile); |
c906108c | 1954 | if (typenums[0] != -1) |
46bf5051 | 1955 | *dbx_lookup_type (typenums, objfile) = type; |
c906108c SS |
1956 | break; |
1957 | ||
1958 | case 'b': | |
c906108c SS |
1959 | { |
1960 | /* Sun ACC builtin int type */ | |
1961 | type = read_sun_builtin_type (pp, typenums, objfile); | |
1962 | if (typenums[0] != -1) | |
46bf5051 | 1963 | *dbx_lookup_type (typenums, objfile) = type; |
c906108c SS |
1964 | } |
1965 | break; | |
1966 | ||
c5aa993b | 1967 | case 'R': /* Sun ACC builtin float type */ |
c906108c SS |
1968 | type = read_sun_floating_type (pp, typenums, objfile); |
1969 | if (typenums[0] != -1) | |
46bf5051 | 1970 | *dbx_lookup_type (typenums, objfile) = type; |
c906108c | 1971 | break; |
c5aa993b JM |
1972 | |
1973 | case 'e': /* Enumeration type */ | |
c906108c SS |
1974 | type = dbx_alloc_type (typenums, objfile); |
1975 | type = read_enum_type (pp, type, objfile); | |
1976 | if (typenums[0] != -1) | |
46bf5051 | 1977 | *dbx_lookup_type (typenums, objfile) = type; |
c906108c SS |
1978 | break; |
1979 | ||
c5aa993b JM |
1980 | case 's': /* Struct type */ |
1981 | case 'u': /* Union type */ | |
2ae1c2d2 JB |
1982 | { |
1983 | enum type_code type_code = TYPE_CODE_UNDEF; | |
1984 | type = dbx_alloc_type (typenums, objfile); | |
1985 | switch (type_descriptor) | |
1986 | { | |
1987 | case 's': | |
1988 | type_code = TYPE_CODE_STRUCT; | |
1989 | break; | |
1990 | case 'u': | |
1991 | type_code = TYPE_CODE_UNION; | |
1992 | break; | |
1993 | } | |
1994 | type = read_struct_type (pp, type, type_code, objfile); | |
1995 | break; | |
1996 | } | |
c906108c | 1997 | |
c5aa993b | 1998 | case 'a': /* Array type */ |
c906108c SS |
1999 | if (**pp != 'r') |
2000 | return error_type (pp, objfile); | |
2001 | ++*pp; | |
c5aa993b | 2002 | |
c906108c SS |
2003 | type = dbx_alloc_type (typenums, objfile); |
2004 | type = read_array_type (pp, type, objfile); | |
2005 | if (is_string) | |
2006 | TYPE_CODE (type) = TYPE_CODE_STRING; | |
e2cd42dd | 2007 | if (is_vector) |
ea37ba09 | 2008 | make_vector_type (type); |
c906108c SS |
2009 | break; |
2010 | ||
e2cd42dd | 2011 | case 'S': /* Set or bitstring type */ |
c906108c | 2012 | type1 = read_type (pp, objfile); |
c5aa993b | 2013 | type = create_set_type ((struct type *) NULL, type1); |
c906108c SS |
2014 | if (is_string) |
2015 | TYPE_CODE (type) = TYPE_CODE_BITSTRING; | |
2016 | if (typenums[0] != -1) | |
46bf5051 | 2017 | *dbx_lookup_type (typenums, objfile) = type; |
c906108c SS |
2018 | break; |
2019 | ||
2020 | default: | |
2021 | --*pp; /* Go back to the symbol in error */ | |
c5aa993b | 2022 | /* Particularly important if it was \0! */ |
c906108c SS |
2023 | return error_type (pp, objfile); |
2024 | } | |
2025 | ||
2026 | if (type == 0) | |
2027 | { | |
8a3fe4f8 | 2028 | warning (_("GDB internal error, type is NULL in stabsread.c.")); |
c906108c SS |
2029 | return error_type (pp, objfile); |
2030 | } | |
2031 | ||
2032 | /* Size specified in a type attribute overrides any other size. */ | |
2033 | if (type_size != -1) | |
2034 | TYPE_LENGTH (type) = (type_size + TARGET_CHAR_BIT - 1) / TARGET_CHAR_BIT; | |
2035 | ||
2036 | return type; | |
2037 | } | |
2038 | \f | |
2039 | /* RS/6000 xlc/dbx combination uses a set of builtin types, starting from -1. | |
2040 | Return the proper type node for a given builtin type number. */ | |
2041 | ||
46bf5051 UW |
2042 | static const struct objfile_data *rs6000_builtin_type_data; |
2043 | ||
c906108c | 2044 | static struct type * |
46bf5051 | 2045 | rs6000_builtin_type (int typenum, struct objfile *objfile) |
c906108c | 2046 | { |
46bf5051 UW |
2047 | struct type **negative_types = objfile_data (objfile, rs6000_builtin_type_data); |
2048 | ||
c906108c SS |
2049 | /* We recognize types numbered from -NUMBER_RECOGNIZED to -1. */ |
2050 | #define NUMBER_RECOGNIZED 34 | |
c906108c SS |
2051 | struct type *rettype = NULL; |
2052 | ||
2053 | if (typenum >= 0 || typenum < -NUMBER_RECOGNIZED) | |
2054 | { | |
e2e0b3e5 | 2055 | complaint (&symfile_complaints, _("Unknown builtin type %d"), typenum); |
46bf5051 | 2056 | return objfile_type (objfile)->builtin_error; |
c906108c | 2057 | } |
46bf5051 UW |
2058 | |
2059 | if (!negative_types) | |
2060 | { | |
2061 | /* This includes an empty slot for type number -0. */ | |
2062 | negative_types = OBSTACK_CALLOC (&objfile->objfile_obstack, | |
2063 | NUMBER_RECOGNIZED + 1, struct type *); | |
2064 | set_objfile_data (objfile, rs6000_builtin_type_data, negative_types); | |
2065 | } | |
2066 | ||
c906108c SS |
2067 | if (negative_types[-typenum] != NULL) |
2068 | return negative_types[-typenum]; | |
2069 | ||
2070 | #if TARGET_CHAR_BIT != 8 | |
c5aa993b | 2071 | #error This code wrong for TARGET_CHAR_BIT not 8 |
c906108c SS |
2072 | /* These definitions all assume that TARGET_CHAR_BIT is 8. I think |
2073 | that if that ever becomes not true, the correct fix will be to | |
2074 | make the size in the struct type to be in bits, not in units of | |
2075 | TARGET_CHAR_BIT. */ | |
2076 | #endif | |
2077 | ||
2078 | switch (-typenum) | |
2079 | { | |
2080 | case 1: | |
2081 | /* The size of this and all the other types are fixed, defined | |
c5aa993b JM |
2082 | by the debugging format. If there is a type called "int" which |
2083 | is other than 32 bits, then it should use a new negative type | |
2084 | number (or avoid negative type numbers for that case). | |
2085 | See stabs.texinfo. */ | |
46bf5051 | 2086 | rettype = init_type (TYPE_CODE_INT, 4, 0, "int", objfile); |
c906108c SS |
2087 | break; |
2088 | case 2: | |
46bf5051 | 2089 | rettype = init_type (TYPE_CODE_INT, 1, 0, "char", objfile); |
c906108c SS |
2090 | break; |
2091 | case 3: | |
46bf5051 | 2092 | rettype = init_type (TYPE_CODE_INT, 2, 0, "short", objfile); |
c906108c SS |
2093 | break; |
2094 | case 4: | |
46bf5051 | 2095 | rettype = init_type (TYPE_CODE_INT, 4, 0, "long", objfile); |
c906108c SS |
2096 | break; |
2097 | case 5: | |
2098 | rettype = init_type (TYPE_CODE_INT, 1, TYPE_FLAG_UNSIGNED, | |
46bf5051 | 2099 | "unsigned char", objfile); |
c906108c SS |
2100 | break; |
2101 | case 6: | |
46bf5051 | 2102 | rettype = init_type (TYPE_CODE_INT, 1, 0, "signed char", objfile); |
c906108c SS |
2103 | break; |
2104 | case 7: | |
2105 | rettype = init_type (TYPE_CODE_INT, 2, TYPE_FLAG_UNSIGNED, | |
46bf5051 | 2106 | "unsigned short", objfile); |
c906108c SS |
2107 | break; |
2108 | case 8: | |
2109 | rettype = init_type (TYPE_CODE_INT, 4, TYPE_FLAG_UNSIGNED, | |
46bf5051 | 2110 | "unsigned int", objfile); |
c906108c SS |
2111 | break; |
2112 | case 9: | |
2113 | rettype = init_type (TYPE_CODE_INT, 4, TYPE_FLAG_UNSIGNED, | |
46bf5051 | 2114 | "unsigned", objfile); |
c906108c SS |
2115 | case 10: |
2116 | rettype = init_type (TYPE_CODE_INT, 4, TYPE_FLAG_UNSIGNED, | |
46bf5051 | 2117 | "unsigned long", objfile); |
c906108c SS |
2118 | break; |
2119 | case 11: | |
46bf5051 | 2120 | rettype = init_type (TYPE_CODE_VOID, 1, 0, "void", objfile); |
c906108c SS |
2121 | break; |
2122 | case 12: | |
2123 | /* IEEE single precision (32 bit). */ | |
46bf5051 | 2124 | rettype = init_type (TYPE_CODE_FLT, 4, 0, "float", objfile); |
c906108c SS |
2125 | break; |
2126 | case 13: | |
2127 | /* IEEE double precision (64 bit). */ | |
46bf5051 | 2128 | rettype = init_type (TYPE_CODE_FLT, 8, 0, "double", objfile); |
c906108c SS |
2129 | break; |
2130 | case 14: | |
2131 | /* This is an IEEE double on the RS/6000, and different machines with | |
c5aa993b JM |
2132 | different sizes for "long double" should use different negative |
2133 | type numbers. See stabs.texinfo. */ | |
46bf5051 | 2134 | rettype = init_type (TYPE_CODE_FLT, 8, 0, "long double", objfile); |
c906108c SS |
2135 | break; |
2136 | case 15: | |
46bf5051 | 2137 | rettype = init_type (TYPE_CODE_INT, 4, 0, "integer", objfile); |
c906108c SS |
2138 | break; |
2139 | case 16: | |
2140 | rettype = init_type (TYPE_CODE_BOOL, 4, TYPE_FLAG_UNSIGNED, | |
46bf5051 | 2141 | "boolean", objfile); |
c906108c SS |
2142 | break; |
2143 | case 17: | |
46bf5051 | 2144 | rettype = init_type (TYPE_CODE_FLT, 4, 0, "short real", objfile); |
c906108c SS |
2145 | break; |
2146 | case 18: | |
46bf5051 | 2147 | rettype = init_type (TYPE_CODE_FLT, 8, 0, "real", objfile); |
c906108c SS |
2148 | break; |
2149 | case 19: | |
46bf5051 | 2150 | rettype = init_type (TYPE_CODE_ERROR, 0, 0, "stringptr", objfile); |
c906108c SS |
2151 | break; |
2152 | case 20: | |
2153 | rettype = init_type (TYPE_CODE_CHAR, 1, TYPE_FLAG_UNSIGNED, | |
46bf5051 | 2154 | "character", objfile); |
c906108c SS |
2155 | break; |
2156 | case 21: | |
2157 | rettype = init_type (TYPE_CODE_BOOL, 1, TYPE_FLAG_UNSIGNED, | |
46bf5051 | 2158 | "logical*1", objfile); |
c906108c SS |
2159 | break; |
2160 | case 22: | |
2161 | rettype = init_type (TYPE_CODE_BOOL, 2, TYPE_FLAG_UNSIGNED, | |
46bf5051 | 2162 | "logical*2", objfile); |
c906108c SS |
2163 | break; |
2164 | case 23: | |
2165 | rettype = init_type (TYPE_CODE_BOOL, 4, TYPE_FLAG_UNSIGNED, | |
46bf5051 | 2166 | "logical*4", objfile); |
c906108c SS |
2167 | break; |
2168 | case 24: | |
2169 | rettype = init_type (TYPE_CODE_BOOL, 4, TYPE_FLAG_UNSIGNED, | |
46bf5051 | 2170 | "logical", objfile); |
c906108c SS |
2171 | break; |
2172 | case 25: | |
2173 | /* Complex type consisting of two IEEE single precision values. */ | |
46bf5051 | 2174 | rettype = init_type (TYPE_CODE_COMPLEX, 8, 0, "complex", objfile); |
f65ca430 | 2175 | TYPE_TARGET_TYPE (rettype) = init_type (TYPE_CODE_FLT, 4, 0, "float", |
46bf5051 | 2176 | objfile); |
c906108c SS |
2177 | break; |
2178 | case 26: | |
2179 | /* Complex type consisting of two IEEE double precision values. */ | |
2180 | rettype = init_type (TYPE_CODE_COMPLEX, 16, 0, "double complex", NULL); | |
f65ca430 | 2181 | TYPE_TARGET_TYPE (rettype) = init_type (TYPE_CODE_FLT, 8, 0, "double", |
46bf5051 | 2182 | objfile); |
c906108c SS |
2183 | break; |
2184 | case 27: | |
46bf5051 | 2185 | rettype = init_type (TYPE_CODE_INT, 1, 0, "integer*1", objfile); |
c906108c SS |
2186 | break; |
2187 | case 28: | |
46bf5051 | 2188 | rettype = init_type (TYPE_CODE_INT, 2, 0, "integer*2", objfile); |
c906108c SS |
2189 | break; |
2190 | case 29: | |
46bf5051 | 2191 | rettype = init_type (TYPE_CODE_INT, 4, 0, "integer*4", objfile); |
c906108c SS |
2192 | break; |
2193 | case 30: | |
46bf5051 | 2194 | rettype = init_type (TYPE_CODE_CHAR, 2, 0, "wchar", objfile); |
c906108c SS |
2195 | break; |
2196 | case 31: | |
46bf5051 | 2197 | rettype = init_type (TYPE_CODE_INT, 8, 0, "long long", objfile); |
c906108c SS |
2198 | break; |
2199 | case 32: | |
2200 | rettype = init_type (TYPE_CODE_INT, 8, TYPE_FLAG_UNSIGNED, | |
46bf5051 | 2201 | "unsigned long long", objfile); |
c906108c SS |
2202 | break; |
2203 | case 33: | |
2204 | rettype = init_type (TYPE_CODE_INT, 8, TYPE_FLAG_UNSIGNED, | |
46bf5051 | 2205 | "logical*8", objfile); |
c906108c SS |
2206 | break; |
2207 | case 34: | |
46bf5051 | 2208 | rettype = init_type (TYPE_CODE_INT, 8, 0, "integer*8", objfile); |
c906108c SS |
2209 | break; |
2210 | } | |
2211 | negative_types[-typenum] = rettype; | |
2212 | return rettype; | |
2213 | } | |
2214 | \f | |
2215 | /* This page contains subroutines of read_type. */ | |
2216 | ||
de17c821 DJ |
2217 | /* Replace *OLD_NAME with the method name portion of PHYSNAME. */ |
2218 | ||
2219 | static void | |
2220 | update_method_name_from_physname (char **old_name, char *physname) | |
2221 | { | |
2222 | char *method_name; | |
2223 | ||
2224 | method_name = method_name_from_physname (physname); | |
2225 | ||
2226 | if (method_name == NULL) | |
c263362b DJ |
2227 | { |
2228 | complaint (&symfile_complaints, | |
e2e0b3e5 | 2229 | _("Method has bad physname %s\n"), physname); |
c263362b DJ |
2230 | return; |
2231 | } | |
de17c821 DJ |
2232 | |
2233 | if (strcmp (*old_name, method_name) != 0) | |
2234 | { | |
2235 | xfree (*old_name); | |
2236 | *old_name = method_name; | |
2237 | } | |
2238 | else | |
2239 | xfree (method_name); | |
2240 | } | |
2241 | ||
c906108c SS |
2242 | /* Read member function stabs info for C++ classes. The form of each member |
2243 | function data is: | |
2244 | ||
c5aa993b | 2245 | NAME :: TYPENUM[=type definition] ARGS : PHYSNAME ; |
c906108c SS |
2246 | |
2247 | An example with two member functions is: | |
2248 | ||
c5aa993b | 2249 | afunc1::20=##15;:i;2A.;afunc2::20:i;2A.; |
c906108c SS |
2250 | |
2251 | For the case of overloaded operators, the format is op$::*.funcs, where | |
2252 | $ is the CPLUS_MARKER (usually '$'), `*' holds the place for an operator | |
2253 | name (such as `+=') and `.' marks the end of the operator name. | |
2254 | ||
2255 | Returns 1 for success, 0 for failure. */ | |
2256 | ||
2257 | static int | |
fba45db2 KB |
2258 | read_member_functions (struct field_info *fip, char **pp, struct type *type, |
2259 | struct objfile *objfile) | |
c906108c SS |
2260 | { |
2261 | int nfn_fields = 0; | |
2262 | int length = 0; | |
2263 | /* Total number of member functions defined in this class. If the class | |
2264 | defines two `f' functions, and one `g' function, then this will have | |
2265 | the value 3. */ | |
2266 | int total_length = 0; | |
2267 | int i; | |
2268 | struct next_fnfield | |
2269 | { | |
2270 | struct next_fnfield *next; | |
2271 | struct fn_field fn_field; | |
c5aa993b JM |
2272 | } |
2273 | *sublist; | |
c906108c SS |
2274 | struct type *look_ahead_type; |
2275 | struct next_fnfieldlist *new_fnlist; | |
2276 | struct next_fnfield *new_sublist; | |
2277 | char *main_fn_name; | |
52f0bd74 | 2278 | char *p; |
c5aa993b | 2279 | |
c906108c SS |
2280 | /* Process each list until we find something that is not a member function |
2281 | or find the end of the functions. */ | |
2282 | ||
2283 | while (**pp != ';') | |
2284 | { | |
2285 | /* We should be positioned at the start of the function name. | |
c5aa993b JM |
2286 | Scan forward to find the first ':' and if it is not the |
2287 | first of a "::" delimiter, then this is not a member function. */ | |
c906108c SS |
2288 | p = *pp; |
2289 | while (*p != ':') | |
2290 | { | |
2291 | p++; | |
2292 | } | |
2293 | if (p[1] != ':') | |
2294 | { | |
2295 | break; | |
2296 | } | |
2297 | ||
2298 | sublist = NULL; | |
2299 | look_ahead_type = NULL; | |
2300 | length = 0; | |
c5aa993b | 2301 | |
c906108c SS |
2302 | new_fnlist = (struct next_fnfieldlist *) |
2303 | xmalloc (sizeof (struct next_fnfieldlist)); | |
b8c9b27d | 2304 | make_cleanup (xfree, new_fnlist); |
c906108c | 2305 | memset (new_fnlist, 0, sizeof (struct next_fnfieldlist)); |
c5aa993b | 2306 | |
c906108c SS |
2307 | if ((*pp)[0] == 'o' && (*pp)[1] == 'p' && is_cplus_marker ((*pp)[2])) |
2308 | { | |
2309 | /* This is a completely wierd case. In order to stuff in the | |
2310 | names that might contain colons (the usual name delimiter), | |
2311 | Mike Tiemann defined a different name format which is | |
2312 | signalled if the identifier is "op$". In that case, the | |
2313 | format is "op$::XXXX." where XXXX is the name. This is | |
2314 | used for names like "+" or "=". YUUUUUUUK! FIXME! */ | |
2315 | /* This lets the user type "break operator+". | |
2316 | We could just put in "+" as the name, but that wouldn't | |
2317 | work for "*". */ | |
8343f86c | 2318 | static char opname[32] = "op$"; |
c906108c | 2319 | char *o = opname + 3; |
c5aa993b | 2320 | |
c906108c SS |
2321 | /* Skip past '::'. */ |
2322 | *pp = p + 2; | |
2323 | ||
2324 | STABS_CONTINUE (pp, objfile); | |
2325 | p = *pp; | |
2326 | while (*p != '.') | |
2327 | { | |
2328 | *o++ = *p++; | |
2329 | } | |
2330 | main_fn_name = savestring (opname, o - opname); | |
2331 | /* Skip past '.' */ | |
2332 | *pp = p + 1; | |
2333 | } | |
2334 | else | |
2335 | { | |
2336 | main_fn_name = savestring (*pp, p - *pp); | |
2337 | /* Skip past '::'. */ | |
2338 | *pp = p + 2; | |
2339 | } | |
c5aa993b JM |
2340 | new_fnlist->fn_fieldlist.name = main_fn_name; |
2341 | ||
c906108c SS |
2342 | do |
2343 | { | |
2344 | new_sublist = | |
2345 | (struct next_fnfield *) xmalloc (sizeof (struct next_fnfield)); | |
b8c9b27d | 2346 | make_cleanup (xfree, new_sublist); |
c906108c | 2347 | memset (new_sublist, 0, sizeof (struct next_fnfield)); |
c5aa993b | 2348 | |
c906108c SS |
2349 | /* Check for and handle cretinous dbx symbol name continuation! */ |
2350 | if (look_ahead_type == NULL) | |
2351 | { | |
2352 | /* Normal case. */ | |
2353 | STABS_CONTINUE (pp, objfile); | |
c5aa993b JM |
2354 | |
2355 | new_sublist->fn_field.type = read_type (pp, objfile); | |
c906108c SS |
2356 | if (**pp != ':') |
2357 | { | |
2358 | /* Invalid symtab info for member function. */ | |
2359 | return 0; | |
2360 | } | |
2361 | } | |
2362 | else | |
2363 | { | |
2364 | /* g++ version 1 kludge */ | |
c5aa993b | 2365 | new_sublist->fn_field.type = look_ahead_type; |
c906108c SS |
2366 | look_ahead_type = NULL; |
2367 | } | |
c5aa993b | 2368 | |
c906108c SS |
2369 | (*pp)++; |
2370 | p = *pp; | |
2371 | while (*p != ';') | |
2372 | { | |
2373 | p++; | |
2374 | } | |
c5aa993b | 2375 | |
c906108c SS |
2376 | /* If this is just a stub, then we don't have the real name here. */ |
2377 | ||
74a9bb82 | 2378 | if (TYPE_STUB (new_sublist->fn_field.type)) |
c906108c | 2379 | { |
c5aa993b JM |
2380 | if (!TYPE_DOMAIN_TYPE (new_sublist->fn_field.type)) |
2381 | TYPE_DOMAIN_TYPE (new_sublist->fn_field.type) = type; | |
2382 | new_sublist->fn_field.is_stub = 1; | |
c906108c | 2383 | } |
c5aa993b | 2384 | new_sublist->fn_field.physname = savestring (*pp, p - *pp); |
c906108c | 2385 | *pp = p + 1; |
c5aa993b | 2386 | |
c906108c SS |
2387 | /* Set this member function's visibility fields. */ |
2388 | switch (*(*pp)++) | |
2389 | { | |
c5aa993b JM |
2390 | case VISIBILITY_PRIVATE: |
2391 | new_sublist->fn_field.is_private = 1; | |
2392 | break; | |
2393 | case VISIBILITY_PROTECTED: | |
2394 | new_sublist->fn_field.is_protected = 1; | |
2395 | break; | |
c906108c | 2396 | } |
c5aa993b | 2397 | |
c906108c SS |
2398 | STABS_CONTINUE (pp, objfile); |
2399 | switch (**pp) | |
2400 | { | |
c5aa993b JM |
2401 | case 'A': /* Normal functions. */ |
2402 | new_sublist->fn_field.is_const = 0; | |
2403 | new_sublist->fn_field.is_volatile = 0; | |
2404 | (*pp)++; | |
2405 | break; | |
2406 | case 'B': /* `const' member functions. */ | |
2407 | new_sublist->fn_field.is_const = 1; | |
2408 | new_sublist->fn_field.is_volatile = 0; | |
2409 | (*pp)++; | |
2410 | break; | |
2411 | case 'C': /* `volatile' member function. */ | |
2412 | new_sublist->fn_field.is_const = 0; | |
2413 | new_sublist->fn_field.is_volatile = 1; | |
2414 | (*pp)++; | |
2415 | break; | |
2416 | case 'D': /* `const volatile' member function. */ | |
2417 | new_sublist->fn_field.is_const = 1; | |
2418 | new_sublist->fn_field.is_volatile = 1; | |
2419 | (*pp)++; | |
2420 | break; | |
2421 | case '*': /* File compiled with g++ version 1 -- no info */ | |
2422 | case '?': | |
2423 | case '.': | |
2424 | break; | |
2425 | default: | |
23136709 | 2426 | complaint (&symfile_complaints, |
e2e0b3e5 | 2427 | _("const/volatile indicator missing, got '%c'"), **pp); |
c5aa993b | 2428 | break; |
c906108c | 2429 | } |
c5aa993b | 2430 | |
c906108c SS |
2431 | switch (*(*pp)++) |
2432 | { | |
c5aa993b | 2433 | case '*': |
c906108c SS |
2434 | { |
2435 | int nbits; | |
c5aa993b | 2436 | /* virtual member function, followed by index. |
c906108c SS |
2437 | The sign bit is set to distinguish pointers-to-methods |
2438 | from virtual function indicies. Since the array is | |
2439 | in words, the quantity must be shifted left by 1 | |
2440 | on 16 bit machine, and by 2 on 32 bit machine, forcing | |
2441 | the sign bit out, and usable as a valid index into | |
2442 | the array. Remove the sign bit here. */ | |
c5aa993b | 2443 | new_sublist->fn_field.voffset = |
94e10a22 | 2444 | (0x7fffffff & read_huge_number (pp, ';', &nbits, 0)) + 2; |
c906108c SS |
2445 | if (nbits != 0) |
2446 | return 0; | |
c5aa993b | 2447 | |
c906108c SS |
2448 | STABS_CONTINUE (pp, objfile); |
2449 | if (**pp == ';' || **pp == '\0') | |
2450 | { | |
2451 | /* Must be g++ version 1. */ | |
c5aa993b | 2452 | new_sublist->fn_field.fcontext = 0; |
c906108c SS |
2453 | } |
2454 | else | |
2455 | { | |
2456 | /* Figure out from whence this virtual function came. | |
2457 | It may belong to virtual function table of | |
2458 | one of its baseclasses. */ | |
2459 | look_ahead_type = read_type (pp, objfile); | |
2460 | if (**pp == ':') | |
2461 | { | |
2462 | /* g++ version 1 overloaded methods. */ | |
2463 | } | |
2464 | else | |
2465 | { | |
c5aa993b | 2466 | new_sublist->fn_field.fcontext = look_ahead_type; |
c906108c SS |
2467 | if (**pp != ';') |
2468 | { | |
2469 | return 0; | |
2470 | } | |
2471 | else | |
2472 | { | |
2473 | ++*pp; | |
2474 | } | |
2475 | look_ahead_type = NULL; | |
2476 | } | |
2477 | } | |
2478 | break; | |
2479 | } | |
c5aa993b JM |
2480 | case '?': |
2481 | /* static member function. */ | |
4ea09c10 PS |
2482 | { |
2483 | int slen = strlen (main_fn_name); | |
2484 | ||
2485 | new_sublist->fn_field.voffset = VOFFSET_STATIC; | |
2486 | ||
2487 | /* For static member functions, we can't tell if they | |
2488 | are stubbed, as they are put out as functions, and not as | |
2489 | methods. | |
2490 | GCC v2 emits the fully mangled name if | |
2491 | dbxout.c:flag_minimal_debug is not set, so we have to | |
2492 | detect a fully mangled physname here and set is_stub | |
2493 | accordingly. Fully mangled physnames in v2 start with | |
2494 | the member function name, followed by two underscores. | |
2495 | GCC v3 currently always emits stubbed member functions, | |
2496 | but with fully mangled physnames, which start with _Z. */ | |
2497 | if (!(strncmp (new_sublist->fn_field.physname, | |
2498 | main_fn_name, slen) == 0 | |
2499 | && new_sublist->fn_field.physname[slen] == '_' | |
2500 | && new_sublist->fn_field.physname[slen + 1] == '_')) | |
2501 | { | |
2502 | new_sublist->fn_field.is_stub = 1; | |
2503 | } | |
2504 | break; | |
2505 | } | |
c5aa993b JM |
2506 | |
2507 | default: | |
2508 | /* error */ | |
23136709 | 2509 | complaint (&symfile_complaints, |
e2e0b3e5 | 2510 | _("member function type missing, got '%c'"), (*pp)[-1]); |
c5aa993b JM |
2511 | /* Fall through into normal member function. */ |
2512 | ||
2513 | case '.': | |
2514 | /* normal member function. */ | |
2515 | new_sublist->fn_field.voffset = 0; | |
2516 | new_sublist->fn_field.fcontext = 0; | |
2517 | break; | |
c906108c | 2518 | } |
c5aa993b JM |
2519 | |
2520 | new_sublist->next = sublist; | |
c906108c SS |
2521 | sublist = new_sublist; |
2522 | length++; | |
2523 | STABS_CONTINUE (pp, objfile); | |
2524 | } | |
2525 | while (**pp != ';' && **pp != '\0'); | |
c5aa993b | 2526 | |
c906108c | 2527 | (*pp)++; |
0c867556 | 2528 | STABS_CONTINUE (pp, objfile); |
c5aa993b | 2529 | |
0c867556 PS |
2530 | /* Skip GCC 3.X member functions which are duplicates of the callable |
2531 | constructor/destructor. */ | |
6cbbcdfe KS |
2532 | if (strcmp_iw (main_fn_name, "__base_ctor ") == 0 |
2533 | || strcmp_iw (main_fn_name, "__base_dtor ") == 0 | |
0c867556 | 2534 | || strcmp (main_fn_name, "__deleting_dtor") == 0) |
c906108c | 2535 | { |
0c867556 | 2536 | xfree (main_fn_name); |
c906108c | 2537 | } |
0c867556 PS |
2538 | else |
2539 | { | |
de17c821 DJ |
2540 | int has_stub = 0; |
2541 | int has_destructor = 0, has_other = 0; | |
2542 | int is_v3 = 0; | |
2543 | struct next_fnfield *tmp_sublist; | |
2544 | ||
2545 | /* Various versions of GCC emit various mostly-useless | |
2546 | strings in the name field for special member functions. | |
2547 | ||
2548 | For stub methods, we need to defer correcting the name | |
2549 | until we are ready to unstub the method, because the current | |
2550 | name string is used by gdb_mangle_name. The only stub methods | |
2551 | of concern here are GNU v2 operators; other methods have their | |
2552 | names correct (see caveat below). | |
2553 | ||
2554 | For non-stub methods, in GNU v3, we have a complete physname. | |
2555 | Therefore we can safely correct the name now. This primarily | |
2556 | affects constructors and destructors, whose name will be | |
2557 | __comp_ctor or __comp_dtor instead of Foo or ~Foo. Cast | |
2558 | operators will also have incorrect names; for instance, | |
2559 | "operator int" will be named "operator i" (i.e. the type is | |
2560 | mangled). | |
2561 | ||
2562 | For non-stub methods in GNU v2, we have no easy way to | |
2563 | know if we have a complete physname or not. For most | |
2564 | methods the result depends on the platform (if CPLUS_MARKER | |
2565 | can be `$' or `.', it will use minimal debug information, or | |
2566 | otherwise the full physname will be included). | |
2567 | ||
2568 | Rather than dealing with this, we take a different approach. | |
2569 | For v3 mangled names, we can use the full physname; for v2, | |
2570 | we use cplus_demangle_opname (which is actually v2 specific), | |
2571 | because the only interesting names are all operators - once again | |
2572 | barring the caveat below. Skip this process if any method in the | |
2573 | group is a stub, to prevent our fouling up the workings of | |
2574 | gdb_mangle_name. | |
2575 | ||
2576 | The caveat: GCC 2.95.x (and earlier?) put constructors and | |
2577 | destructors in the same method group. We need to split this | |
2578 | into two groups, because they should have different names. | |
2579 | So for each method group we check whether it contains both | |
2580 | routines whose physname appears to be a destructor (the physnames | |
2581 | for and destructors are always provided, due to quirks in v2 | |
2582 | mangling) and routines whose physname does not appear to be a | |
2583 | destructor. If so then we break up the list into two halves. | |
2584 | Even if the constructors and destructors aren't in the same group | |
2585 | the destructor will still lack the leading tilde, so that also | |
2586 | needs to be fixed. | |
2587 | ||
2588 | So, to summarize what we expect and handle here: | |
2589 | ||
2590 | Given Given Real Real Action | |
2591 | method name physname physname method name | |
2592 | ||
2593 | __opi [none] __opi__3Foo operator int opname | |
2594 | [now or later] | |
2595 | Foo _._3Foo _._3Foo ~Foo separate and | |
2596 | rename | |
2597 | operator i _ZN3FoocviEv _ZN3FoocviEv operator int demangle | |
2598 | __comp_ctor _ZN3FooC1ERKS_ _ZN3FooC1ERKS_ Foo demangle | |
2599 | */ | |
2600 | ||
2601 | tmp_sublist = sublist; | |
2602 | while (tmp_sublist != NULL) | |
2603 | { | |
2604 | if (tmp_sublist->fn_field.is_stub) | |
2605 | has_stub = 1; | |
2606 | if (tmp_sublist->fn_field.physname[0] == '_' | |
2607 | && tmp_sublist->fn_field.physname[1] == 'Z') | |
2608 | is_v3 = 1; | |
2609 | ||
2610 | if (is_destructor_name (tmp_sublist->fn_field.physname)) | |
2611 | has_destructor++; | |
2612 | else | |
2613 | has_other++; | |
2614 | ||
2615 | tmp_sublist = tmp_sublist->next; | |
2616 | } | |
2617 | ||
2618 | if (has_destructor && has_other) | |
2619 | { | |
2620 | struct next_fnfieldlist *destr_fnlist; | |
2621 | struct next_fnfield *last_sublist; | |
2622 | ||
2623 | /* Create a new fn_fieldlist for the destructors. */ | |
2624 | ||
2625 | destr_fnlist = (struct next_fnfieldlist *) | |
2626 | xmalloc (sizeof (struct next_fnfieldlist)); | |
2627 | make_cleanup (xfree, destr_fnlist); | |
2628 | memset (destr_fnlist, 0, sizeof (struct next_fnfieldlist)); | |
2629 | destr_fnlist->fn_fieldlist.name | |
48cb83fd JK |
2630 | = obconcat (&objfile->objfile_obstack, "~", |
2631 | new_fnlist->fn_fieldlist.name, (char *) NULL); | |
de17c821 DJ |
2632 | |
2633 | destr_fnlist->fn_fieldlist.fn_fields = (struct fn_field *) | |
b99607ea | 2634 | obstack_alloc (&objfile->objfile_obstack, |
de17c821 DJ |
2635 | sizeof (struct fn_field) * has_destructor); |
2636 | memset (destr_fnlist->fn_fieldlist.fn_fields, 0, | |
2637 | sizeof (struct fn_field) * has_destructor); | |
2638 | tmp_sublist = sublist; | |
2639 | last_sublist = NULL; | |
2640 | i = 0; | |
2641 | while (tmp_sublist != NULL) | |
2642 | { | |
2643 | if (!is_destructor_name (tmp_sublist->fn_field.physname)) | |
2644 | { | |
2645 | tmp_sublist = tmp_sublist->next; | |
2646 | continue; | |
2647 | } | |
2648 | ||
2649 | destr_fnlist->fn_fieldlist.fn_fields[i++] | |
2650 | = tmp_sublist->fn_field; | |
2651 | if (last_sublist) | |
2652 | last_sublist->next = tmp_sublist->next; | |
2653 | else | |
2654 | sublist = tmp_sublist->next; | |
2655 | last_sublist = tmp_sublist; | |
2656 | tmp_sublist = tmp_sublist->next; | |
2657 | } | |
2658 | ||
2659 | destr_fnlist->fn_fieldlist.length = has_destructor; | |
2660 | destr_fnlist->next = fip->fnlist; | |
2661 | fip->fnlist = destr_fnlist; | |
2662 | nfn_fields++; | |
2663 | total_length += has_destructor; | |
2664 | length -= has_destructor; | |
2665 | } | |
2666 | else if (is_v3) | |
2667 | { | |
2668 | /* v3 mangling prevents the use of abbreviated physnames, | |
2669 | so we can do this here. There are stubbed methods in v3 | |
2670 | only: | |
2671 | - in -gstabs instead of -gstabs+ | |
2672 | - or for static methods, which are output as a function type | |
2673 | instead of a method type. */ | |
2674 | ||
2675 | update_method_name_from_physname (&new_fnlist->fn_fieldlist.name, | |
2676 | sublist->fn_field.physname); | |
2677 | } | |
2678 | else if (has_destructor && new_fnlist->fn_fieldlist.name[0] != '~') | |
2679 | { | |
1754f103 MK |
2680 | new_fnlist->fn_fieldlist.name = |
2681 | concat ("~", main_fn_name, (char *)NULL); | |
de17c821 DJ |
2682 | xfree (main_fn_name); |
2683 | } | |
2684 | else if (!has_stub) | |
2685 | { | |
2686 | char dem_opname[256]; | |
2687 | int ret; | |
433759f7 | 2688 | |
de17c821 DJ |
2689 | ret = cplus_demangle_opname (new_fnlist->fn_fieldlist.name, |
2690 | dem_opname, DMGL_ANSI); | |
2691 | if (!ret) | |
2692 | ret = cplus_demangle_opname (new_fnlist->fn_fieldlist.name, | |
2693 | dem_opname, 0); | |
2694 | if (ret) | |
2695 | new_fnlist->fn_fieldlist.name | |
2696 | = obsavestring (dem_opname, strlen (dem_opname), | |
b99607ea | 2697 | &objfile->objfile_obstack); |
de17c821 DJ |
2698 | } |
2699 | ||
0c867556 | 2700 | new_fnlist->fn_fieldlist.fn_fields = (struct fn_field *) |
b99607ea | 2701 | obstack_alloc (&objfile->objfile_obstack, |
0c867556 PS |
2702 | sizeof (struct fn_field) * length); |
2703 | memset (new_fnlist->fn_fieldlist.fn_fields, 0, | |
2704 | sizeof (struct fn_field) * length); | |
2705 | for (i = length; (i--, sublist); sublist = sublist->next) | |
2706 | { | |
2707 | new_fnlist->fn_fieldlist.fn_fields[i] = sublist->fn_field; | |
2708 | } | |
c5aa993b | 2709 | |
0c867556 PS |
2710 | new_fnlist->fn_fieldlist.length = length; |
2711 | new_fnlist->next = fip->fnlist; | |
2712 | fip->fnlist = new_fnlist; | |
2713 | nfn_fields++; | |
2714 | total_length += length; | |
2715 | } | |
c906108c SS |
2716 | } |
2717 | ||
2718 | if (nfn_fields) | |
2719 | { | |
2720 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
2721 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
2722 | TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * nfn_fields); | |
2723 | memset (TYPE_FN_FIELDLISTS (type), 0, | |
2724 | sizeof (struct fn_fieldlist) * nfn_fields); | |
2725 | TYPE_NFN_FIELDS (type) = nfn_fields; | |
2726 | TYPE_NFN_FIELDS_TOTAL (type) = total_length; | |
2727 | } | |
2728 | ||
2729 | return 1; | |
2730 | } | |
2731 | ||
2732 | /* Special GNU C++ name. | |
2733 | ||
2734 | Returns 1 for success, 0 for failure. "failure" means that we can't | |
2735 | keep parsing and it's time for error_type(). */ | |
2736 | ||
2737 | static int | |
fba45db2 KB |
2738 | read_cpp_abbrev (struct field_info *fip, char **pp, struct type *type, |
2739 | struct objfile *objfile) | |
c906108c | 2740 | { |
52f0bd74 | 2741 | char *p; |
c906108c SS |
2742 | char *name; |
2743 | char cpp_abbrev; | |
2744 | struct type *context; | |
2745 | ||
2746 | p = *pp; | |
2747 | if (*++p == 'v') | |
2748 | { | |
2749 | name = NULL; | |
2750 | cpp_abbrev = *++p; | |
2751 | ||
2752 | *pp = p + 1; | |
2753 | ||
2754 | /* At this point, *pp points to something like "22:23=*22...", | |
c5aa993b JM |
2755 | where the type number before the ':' is the "context" and |
2756 | everything after is a regular type definition. Lookup the | |
2757 | type, find it's name, and construct the field name. */ | |
c906108c SS |
2758 | |
2759 | context = read_type (pp, objfile); | |
2760 | ||
2761 | switch (cpp_abbrev) | |
2762 | { | |
c5aa993b | 2763 | case 'f': /* $vf -- a virtual function table pointer */ |
c2bd2ed9 JB |
2764 | name = type_name_no_tag (context); |
2765 | if (name == NULL) | |
433759f7 MS |
2766 | { |
2767 | name = ""; | |
2768 | } | |
48cb83fd JK |
2769 | fip->list->field.name = obconcat (&objfile->objfile_obstack, |
2770 | vptr_name, name, (char *) NULL); | |
c5aa993b | 2771 | break; |
c906108c | 2772 | |
c5aa993b JM |
2773 | case 'b': /* $vb -- a virtual bsomethingorother */ |
2774 | name = type_name_no_tag (context); | |
2775 | if (name == NULL) | |
2776 | { | |
23136709 | 2777 | complaint (&symfile_complaints, |
e2e0b3e5 | 2778 | _("C++ abbreviated type name unknown at symtab pos %d"), |
23136709 | 2779 | symnum); |
c5aa993b JM |
2780 | name = "FOO"; |
2781 | } | |
48cb83fd JK |
2782 | fip->list->field.name = obconcat (&objfile->objfile_obstack, vb_name, |
2783 | name, (char *) NULL); | |
c5aa993b | 2784 | break; |
c906108c | 2785 | |
c5aa993b | 2786 | default: |
23136709 | 2787 | invalid_cpp_abbrev_complaint (*pp); |
48cb83fd JK |
2788 | fip->list->field.name = obconcat (&objfile->objfile_obstack, |
2789 | "INVALID_CPLUSPLUS_ABBREV", | |
2790 | (char *) NULL); | |
c5aa993b | 2791 | break; |
c906108c SS |
2792 | } |
2793 | ||
2794 | /* At this point, *pp points to the ':'. Skip it and read the | |
c5aa993b | 2795 | field type. */ |
c906108c SS |
2796 | |
2797 | p = ++(*pp); | |
2798 | if (p[-1] != ':') | |
2799 | { | |
23136709 | 2800 | invalid_cpp_abbrev_complaint (*pp); |
c906108c SS |
2801 | return 0; |
2802 | } | |
2803 | fip->list->field.type = read_type (pp, objfile); | |
2804 | if (**pp == ',') | |
c5aa993b | 2805 | (*pp)++; /* Skip the comma. */ |
c906108c SS |
2806 | else |
2807 | return 0; | |
2808 | ||
2809 | { | |
2810 | int nbits; | |
433759f7 | 2811 | |
94e10a22 JG |
2812 | FIELD_BITPOS (fip->list->field) = read_huge_number (pp, ';', &nbits, |
2813 | 0); | |
c906108c SS |
2814 | if (nbits != 0) |
2815 | return 0; | |
2816 | } | |
2817 | /* This field is unpacked. */ | |
2818 | FIELD_BITSIZE (fip->list->field) = 0; | |
2819 | fip->list->visibility = VISIBILITY_PRIVATE; | |
2820 | } | |
2821 | else | |
2822 | { | |
23136709 | 2823 | invalid_cpp_abbrev_complaint (*pp); |
c906108c | 2824 | /* We have no idea what syntax an unrecognized abbrev would have, so |
c5aa993b JM |
2825 | better return 0. If we returned 1, we would need to at least advance |
2826 | *pp to avoid an infinite loop. */ | |
c906108c SS |
2827 | return 0; |
2828 | } | |
2829 | return 1; | |
2830 | } | |
2831 | ||
2832 | static void | |
fba45db2 KB |
2833 | read_one_struct_field (struct field_info *fip, char **pp, char *p, |
2834 | struct type *type, struct objfile *objfile) | |
c906108c | 2835 | { |
5e2b427d UW |
2836 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
2837 | ||
41989fcd | 2838 | fip->list->field.name = |
b99607ea | 2839 | obsavestring (*pp, p - *pp, &objfile->objfile_obstack); |
c906108c SS |
2840 | *pp = p + 1; |
2841 | ||
2842 | /* This means we have a visibility for a field coming. */ | |
2843 | if (**pp == '/') | |
2844 | { | |
2845 | (*pp)++; | |
c5aa993b | 2846 | fip->list->visibility = *(*pp)++; |
c906108c SS |
2847 | } |
2848 | else | |
2849 | { | |
2850 | /* normal dbx-style format, no explicit visibility */ | |
c5aa993b | 2851 | fip->list->visibility = VISIBILITY_PUBLIC; |
c906108c SS |
2852 | } |
2853 | ||
c5aa993b | 2854 | fip->list->field.type = read_type (pp, objfile); |
c906108c SS |
2855 | if (**pp == ':') |
2856 | { | |
2857 | p = ++(*pp); | |
2858 | #if 0 | |
2859 | /* Possible future hook for nested types. */ | |
2860 | if (**pp == '!') | |
2861 | { | |
c5aa993b | 2862 | fip->list->field.bitpos = (long) -2; /* nested type */ |
c906108c SS |
2863 | p = ++(*pp); |
2864 | } | |
c5aa993b JM |
2865 | else |
2866 | ...; | |
c906108c | 2867 | #endif |
c5aa993b | 2868 | while (*p != ';') |
c906108c SS |
2869 | { |
2870 | p++; | |
2871 | } | |
2872 | /* Static class member. */ | |
2873 | SET_FIELD_PHYSNAME (fip->list->field, savestring (*pp, p - *pp)); | |
2874 | *pp = p + 1; | |
2875 | return; | |
2876 | } | |
2877 | else if (**pp != ',') | |
2878 | { | |
2879 | /* Bad structure-type format. */ | |
23136709 | 2880 | stabs_general_complaint ("bad structure-type format"); |
c906108c SS |
2881 | return; |
2882 | } | |
2883 | ||
2884 | (*pp)++; /* Skip the comma. */ | |
2885 | ||
2886 | { | |
2887 | int nbits; | |
433759f7 | 2888 | |
94e10a22 | 2889 | FIELD_BITPOS (fip->list->field) = read_huge_number (pp, ',', &nbits, 0); |
c906108c SS |
2890 | if (nbits != 0) |
2891 | { | |
23136709 | 2892 | stabs_general_complaint ("bad structure-type format"); |
c906108c SS |
2893 | return; |
2894 | } | |
94e10a22 | 2895 | FIELD_BITSIZE (fip->list->field) = read_huge_number (pp, ';', &nbits, 0); |
c906108c SS |
2896 | if (nbits != 0) |
2897 | { | |
23136709 | 2898 | stabs_general_complaint ("bad structure-type format"); |
c906108c SS |
2899 | return; |
2900 | } | |
2901 | } | |
2902 | ||
2903 | if (FIELD_BITPOS (fip->list->field) == 0 | |
2904 | && FIELD_BITSIZE (fip->list->field) == 0) | |
2905 | { | |
2906 | /* This can happen in two cases: (1) at least for gcc 2.4.5 or so, | |
c5aa993b JM |
2907 | it is a field which has been optimized out. The correct stab for |
2908 | this case is to use VISIBILITY_IGNORE, but that is a recent | |
2909 | invention. (2) It is a 0-size array. For example | |
e2e0b3e5 | 2910 | union { int num; char str[0]; } foo. Printing _("<no value>" for |
c5aa993b JM |
2911 | str in "p foo" is OK, since foo.str (and thus foo.str[3]) |
2912 | will continue to work, and a 0-size array as a whole doesn't | |
2913 | have any contents to print. | |
2914 | ||
2915 | I suspect this probably could also happen with gcc -gstabs (not | |
2916 | -gstabs+) for static fields, and perhaps other C++ extensions. | |
2917 | Hopefully few people use -gstabs with gdb, since it is intended | |
2918 | for dbx compatibility. */ | |
c906108c SS |
2919 | |
2920 | /* Ignore this field. */ | |
c5aa993b | 2921 | fip->list->visibility = VISIBILITY_IGNORE; |
c906108c SS |
2922 | } |
2923 | else | |
2924 | { | |
2925 | /* Detect an unpacked field and mark it as such. | |
c5aa993b JM |
2926 | dbx gives a bit size for all fields. |
2927 | Note that forward refs cannot be packed, | |
2928 | and treat enums as if they had the width of ints. */ | |
c906108c SS |
2929 | |
2930 | struct type *field_type = check_typedef (FIELD_TYPE (fip->list->field)); | |
2931 | ||
2932 | if (TYPE_CODE (field_type) != TYPE_CODE_INT | |
2933 | && TYPE_CODE (field_type) != TYPE_CODE_RANGE | |
2934 | && TYPE_CODE (field_type) != TYPE_CODE_BOOL | |
2935 | && TYPE_CODE (field_type) != TYPE_CODE_ENUM) | |
2936 | { | |
2937 | FIELD_BITSIZE (fip->list->field) = 0; | |
2938 | } | |
c5aa993b | 2939 | if ((FIELD_BITSIZE (fip->list->field) |
c906108c SS |
2940 | == TARGET_CHAR_BIT * TYPE_LENGTH (field_type) |
2941 | || (TYPE_CODE (field_type) == TYPE_CODE_ENUM | |
9a76efb6 | 2942 | && FIELD_BITSIZE (fip->list->field) |
5e2b427d | 2943 | == gdbarch_int_bit (gdbarch)) |
c5aa993b | 2944 | ) |
c906108c SS |
2945 | && |
2946 | FIELD_BITPOS (fip->list->field) % 8 == 0) | |
2947 | { | |
2948 | FIELD_BITSIZE (fip->list->field) = 0; | |
2949 | } | |
2950 | } | |
2951 | } | |
2952 | ||
2953 | ||
2954 | /* Read struct or class data fields. They have the form: | |
2955 | ||
c5aa993b | 2956 | NAME : [VISIBILITY] TYPENUM , BITPOS , BITSIZE ; |
c906108c SS |
2957 | |
2958 | At the end, we see a semicolon instead of a field. | |
2959 | ||
2960 | In C++, this may wind up being NAME:?TYPENUM:PHYSNAME; for | |
2961 | a static field. | |
2962 | ||
2963 | The optional VISIBILITY is one of: | |
2964 | ||
c5aa993b JM |
2965 | '/0' (VISIBILITY_PRIVATE) |
2966 | '/1' (VISIBILITY_PROTECTED) | |
2967 | '/2' (VISIBILITY_PUBLIC) | |
2968 | '/9' (VISIBILITY_IGNORE) | |
c906108c SS |
2969 | |
2970 | or nothing, for C style fields with public visibility. | |
2971 | ||
2972 | Returns 1 for success, 0 for failure. */ | |
2973 | ||
2974 | static int | |
fba45db2 KB |
2975 | read_struct_fields (struct field_info *fip, char **pp, struct type *type, |
2976 | struct objfile *objfile) | |
c906108c | 2977 | { |
52f0bd74 | 2978 | char *p; |
c906108c SS |
2979 | struct nextfield *new; |
2980 | ||
2981 | /* We better set p right now, in case there are no fields at all... */ | |
2982 | ||
2983 | p = *pp; | |
2984 | ||
2985 | /* Read each data member type until we find the terminating ';' at the end of | |
2986 | the data member list, or break for some other reason such as finding the | |
2987 | start of the member function list. */ | |
fedbd091 EZ |
2988 | /* Stab string for structure/union does not end with two ';' in |
2989 | SUN C compiler 5.3 i.e. F6U2, hence check for end of string. */ | |
c906108c | 2990 | |
fedbd091 | 2991 | while (**pp != ';' && **pp != '\0') |
c906108c | 2992 | { |
c906108c SS |
2993 | STABS_CONTINUE (pp, objfile); |
2994 | /* Get space to record the next field's data. */ | |
2995 | new = (struct nextfield *) xmalloc (sizeof (struct nextfield)); | |
b8c9b27d | 2996 | make_cleanup (xfree, new); |
c906108c | 2997 | memset (new, 0, sizeof (struct nextfield)); |
c5aa993b JM |
2998 | new->next = fip->list; |
2999 | fip->list = new; | |
c906108c SS |
3000 | |
3001 | /* Get the field name. */ | |
3002 | p = *pp; | |
3003 | ||
3004 | /* If is starts with CPLUS_MARKER it is a special abbreviation, | |
c5aa993b JM |
3005 | unless the CPLUS_MARKER is followed by an underscore, in |
3006 | which case it is just the name of an anonymous type, which we | |
3007 | should handle like any other type name. */ | |
c906108c SS |
3008 | |
3009 | if (is_cplus_marker (p[0]) && p[1] != '_') | |
3010 | { | |
3011 | if (!read_cpp_abbrev (fip, pp, type, objfile)) | |
3012 | return 0; | |
3013 | continue; | |
3014 | } | |
3015 | ||
3016 | /* Look for the ':' that separates the field name from the field | |
c5aa993b JM |
3017 | values. Data members are delimited by a single ':', while member |
3018 | functions are delimited by a pair of ':'s. When we hit the member | |
3019 | functions (if any), terminate scan loop and return. */ | |
c906108c | 3020 | |
c5aa993b | 3021 | while (*p != ':' && *p != '\0') |
c906108c SS |
3022 | { |
3023 | p++; | |
3024 | } | |
3025 | if (*p == '\0') | |
3026 | return 0; | |
3027 | ||
3028 | /* Check to see if we have hit the member functions yet. */ | |
3029 | if (p[1] == ':') | |
3030 | { | |
3031 | break; | |
3032 | } | |
3033 | read_one_struct_field (fip, pp, p, type, objfile); | |
3034 | } | |
3035 | if (p[0] == ':' && p[1] == ':') | |
3036 | { | |
1b831c93 AC |
3037 | /* (the deleted) chill the list of fields: the last entry (at |
3038 | the head) is a partially constructed entry which we now | |
3039 | scrub. */ | |
c5aa993b | 3040 | fip->list = fip->list->next; |
c906108c SS |
3041 | } |
3042 | return 1; | |
3043 | } | |
9846de1b | 3044 | /* *INDENT-OFF* */ |
c906108c SS |
3045 | /* The stabs for C++ derived classes contain baseclass information which |
3046 | is marked by a '!' character after the total size. This function is | |
3047 | called when we encounter the baseclass marker, and slurps up all the | |
3048 | baseclass information. | |
3049 | ||
3050 | Immediately following the '!' marker is the number of base classes that | |
3051 | the class is derived from, followed by information for each base class. | |
3052 | For each base class, there are two visibility specifiers, a bit offset | |
3053 | to the base class information within the derived class, a reference to | |
3054 | the type for the base class, and a terminating semicolon. | |
3055 | ||
3056 | A typical example, with two base classes, would be "!2,020,19;0264,21;". | |
3057 | ^^ ^ ^ ^ ^ ^ ^ | |
3058 | Baseclass information marker __________________|| | | | | | | | |
3059 | Number of baseclasses __________________________| | | | | | | | |
3060 | Visibility specifiers (2) ________________________| | | | | | | |
3061 | Offset in bits from start of class _________________| | | | | | |
3062 | Type number for base class ___________________________| | | | | |
3063 | Visibility specifiers (2) _______________________________| | | | |
3064 | Offset in bits from start of class ________________________| | | |
3065 | Type number of base class ____________________________________| | |
3066 | ||
3067 | Return 1 for success, 0 for (error-type-inducing) failure. */ | |
9846de1b | 3068 | /* *INDENT-ON* */ |
c906108c | 3069 | |
c5aa993b JM |
3070 | |
3071 | ||
c906108c | 3072 | static int |
fba45db2 KB |
3073 | read_baseclasses (struct field_info *fip, char **pp, struct type *type, |
3074 | struct objfile *objfile) | |
c906108c SS |
3075 | { |
3076 | int i; | |
3077 | struct nextfield *new; | |
3078 | ||
3079 | if (**pp != '!') | |
3080 | { | |
3081 | return 1; | |
3082 | } | |
3083 | else | |
3084 | { | |
3085 | /* Skip the '!' baseclass information marker. */ | |
3086 | (*pp)++; | |
3087 | } | |
3088 | ||
3089 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
3090 | { | |
3091 | int nbits; | |
433759f7 | 3092 | |
94e10a22 | 3093 | TYPE_N_BASECLASSES (type) = read_huge_number (pp, ',', &nbits, 0); |
c906108c SS |
3094 | if (nbits != 0) |
3095 | return 0; | |
3096 | } | |
3097 | ||
3098 | #if 0 | |
3099 | /* Some stupid compilers have trouble with the following, so break | |
3100 | it up into simpler expressions. */ | |
3101 | TYPE_FIELD_VIRTUAL_BITS (type) = (B_TYPE *) | |
3102 | TYPE_ALLOC (type, B_BYTES (TYPE_N_BASECLASSES (type))); | |
3103 | #else | |
3104 | { | |
3105 | int num_bytes = B_BYTES (TYPE_N_BASECLASSES (type)); | |
3106 | char *pointer; | |
3107 | ||
3108 | pointer = (char *) TYPE_ALLOC (type, num_bytes); | |
3109 | TYPE_FIELD_VIRTUAL_BITS (type) = (B_TYPE *) pointer; | |
3110 | } | |
3111 | #endif /* 0 */ | |
3112 | ||
3113 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), TYPE_N_BASECLASSES (type)); | |
3114 | ||
3115 | for (i = 0; i < TYPE_N_BASECLASSES (type); i++) | |
3116 | { | |
3117 | new = (struct nextfield *) xmalloc (sizeof (struct nextfield)); | |
b8c9b27d | 3118 | make_cleanup (xfree, new); |
c906108c | 3119 | memset (new, 0, sizeof (struct nextfield)); |
c5aa993b JM |
3120 | new->next = fip->list; |
3121 | fip->list = new; | |
c906108c SS |
3122 | FIELD_BITSIZE (new->field) = 0; /* this should be an unpacked field! */ |
3123 | ||
3124 | STABS_CONTINUE (pp, objfile); | |
3125 | switch (**pp) | |
3126 | { | |
c5aa993b JM |
3127 | case '0': |
3128 | /* Nothing to do. */ | |
3129 | break; | |
3130 | case '1': | |
3131 | SET_TYPE_FIELD_VIRTUAL (type, i); | |
3132 | break; | |
3133 | default: | |
3134 | /* Unknown character. Complain and treat it as non-virtual. */ | |
3135 | { | |
23136709 | 3136 | complaint (&symfile_complaints, |
e2e0b3e5 | 3137 | _("Unknown virtual character `%c' for baseclass"), **pp); |
c5aa993b | 3138 | } |
c906108c SS |
3139 | } |
3140 | ++(*pp); | |
3141 | ||
c5aa993b JM |
3142 | new->visibility = *(*pp)++; |
3143 | switch (new->visibility) | |
c906108c | 3144 | { |
c5aa993b JM |
3145 | case VISIBILITY_PRIVATE: |
3146 | case VISIBILITY_PROTECTED: | |
3147 | case VISIBILITY_PUBLIC: | |
3148 | break; | |
3149 | default: | |
3150 | /* Bad visibility format. Complain and treat it as | |
3151 | public. */ | |
3152 | { | |
23136709 | 3153 | complaint (&symfile_complaints, |
e2e0b3e5 | 3154 | _("Unknown visibility `%c' for baseclass"), |
23136709 | 3155 | new->visibility); |
c5aa993b JM |
3156 | new->visibility = VISIBILITY_PUBLIC; |
3157 | } | |
c906108c SS |
3158 | } |
3159 | ||
3160 | { | |
3161 | int nbits; | |
c5aa993b | 3162 | |
c906108c SS |
3163 | /* The remaining value is the bit offset of the portion of the object |
3164 | corresponding to this baseclass. Always zero in the absence of | |
3165 | multiple inheritance. */ | |
3166 | ||
94e10a22 | 3167 | FIELD_BITPOS (new->field) = read_huge_number (pp, ',', &nbits, 0); |
c906108c SS |
3168 | if (nbits != 0) |
3169 | return 0; | |
3170 | } | |
3171 | ||
3172 | /* The last piece of baseclass information is the type of the | |
c5aa993b JM |
3173 | base class. Read it, and remember it's type name as this |
3174 | field's name. */ | |
c906108c | 3175 | |
c5aa993b JM |
3176 | new->field.type = read_type (pp, objfile); |
3177 | new->field.name = type_name_no_tag (new->field.type); | |
c906108c SS |
3178 | |
3179 | /* skip trailing ';' and bump count of number of fields seen */ | |
3180 | if (**pp == ';') | |
3181 | (*pp)++; | |
3182 | else | |
3183 | return 0; | |
3184 | } | |
3185 | return 1; | |
3186 | } | |
3187 | ||
3188 | /* The tail end of stabs for C++ classes that contain a virtual function | |
3189 | pointer contains a tilde, a %, and a type number. | |
3190 | The type number refers to the base class (possibly this class itself) which | |
3191 | contains the vtable pointer for the current class. | |
3192 | ||
3193 | This function is called when we have parsed all the method declarations, | |
3194 | so we can look for the vptr base class info. */ | |
3195 | ||
3196 | static int | |
fba45db2 KB |
3197 | read_tilde_fields (struct field_info *fip, char **pp, struct type *type, |
3198 | struct objfile *objfile) | |
c906108c | 3199 | { |
52f0bd74 | 3200 | char *p; |
c906108c SS |
3201 | |
3202 | STABS_CONTINUE (pp, objfile); | |
3203 | ||
3204 | /* If we are positioned at a ';', then skip it. */ | |
3205 | if (**pp == ';') | |
3206 | { | |
3207 | (*pp)++; | |
3208 | } | |
3209 | ||
3210 | if (**pp == '~') | |
3211 | { | |
3212 | (*pp)++; | |
3213 | ||
3214 | if (**pp == '=' || **pp == '+' || **pp == '-') | |
3215 | { | |
3216 | /* Obsolete flags that used to indicate the presence | |
3217 | of constructors and/or destructors. */ | |
3218 | (*pp)++; | |
3219 | } | |
3220 | ||
3221 | /* Read either a '%' or the final ';'. */ | |
3222 | if (*(*pp)++ == '%') | |
3223 | { | |
3224 | /* The next number is the type number of the base class | |
3225 | (possibly our own class) which supplies the vtable for | |
3226 | this class. Parse it out, and search that class to find | |
3227 | its vtable pointer, and install those into TYPE_VPTR_BASETYPE | |
3228 | and TYPE_VPTR_FIELDNO. */ | |
3229 | ||
3230 | struct type *t; | |
3231 | int i; | |
3232 | ||
3233 | t = read_type (pp, objfile); | |
3234 | p = (*pp)++; | |
3235 | while (*p != '\0' && *p != ';') | |
3236 | { | |
3237 | p++; | |
3238 | } | |
3239 | if (*p == '\0') | |
3240 | { | |
3241 | /* Premature end of symbol. */ | |
3242 | return 0; | |
3243 | } | |
c5aa993b | 3244 | |
c906108c | 3245 | TYPE_VPTR_BASETYPE (type) = t; |
c5aa993b | 3246 | if (type == t) /* Our own class provides vtbl ptr */ |
c906108c SS |
3247 | { |
3248 | for (i = TYPE_NFIELDS (t) - 1; | |
3249 | i >= TYPE_N_BASECLASSES (t); | |
3250 | --i) | |
3251 | { | |
8343f86c | 3252 | char *name = TYPE_FIELD_NAME (t, i); |
433759f7 | 3253 | |
8343f86c | 3254 | if (!strncmp (name, vptr_name, sizeof (vptr_name) - 2) |
74451869 | 3255 | && is_cplus_marker (name[sizeof (vptr_name) - 2])) |
c906108c SS |
3256 | { |
3257 | TYPE_VPTR_FIELDNO (type) = i; | |
3258 | goto gotit; | |
3259 | } | |
3260 | } | |
3261 | /* Virtual function table field not found. */ | |
23136709 | 3262 | complaint (&symfile_complaints, |
e2e0b3e5 | 3263 | _("virtual function table pointer not found when defining class `%s'"), |
23136709 | 3264 | TYPE_NAME (type)); |
c906108c SS |
3265 | return 0; |
3266 | } | |
3267 | else | |
3268 | { | |
3269 | TYPE_VPTR_FIELDNO (type) = TYPE_VPTR_FIELDNO (t); | |
3270 | } | |
3271 | ||
c5aa993b | 3272 | gotit: |
c906108c SS |
3273 | *pp = p + 1; |
3274 | } | |
3275 | } | |
3276 | return 1; | |
3277 | } | |
3278 | ||
3279 | static int | |
aa1ee363 | 3280 | attach_fn_fields_to_type (struct field_info *fip, struct type *type) |
c906108c | 3281 | { |
52f0bd74 | 3282 | int n; |
c906108c SS |
3283 | |
3284 | for (n = TYPE_NFN_FIELDS (type); | |
c5aa993b JM |
3285 | fip->fnlist != NULL; |
3286 | fip->fnlist = fip->fnlist->next) | |
c906108c | 3287 | { |
c5aa993b JM |
3288 | --n; /* Circumvent Sun3 compiler bug */ |
3289 | TYPE_FN_FIELDLISTS (type)[n] = fip->fnlist->fn_fieldlist; | |
c906108c SS |
3290 | } |
3291 | return 1; | |
3292 | } | |
3293 | ||
c906108c SS |
3294 | /* Create the vector of fields, and record how big it is. |
3295 | We need this info to record proper virtual function table information | |
3296 | for this class's virtual functions. */ | |
3297 | ||
3298 | static int | |
aa1ee363 | 3299 | attach_fields_to_type (struct field_info *fip, struct type *type, |
fba45db2 | 3300 | struct objfile *objfile) |
c906108c | 3301 | { |
52f0bd74 AC |
3302 | int nfields = 0; |
3303 | int non_public_fields = 0; | |
3304 | struct nextfield *scan; | |
c906108c SS |
3305 | |
3306 | /* Count up the number of fields that we have, as well as taking note of | |
3307 | whether or not there are any non-public fields, which requires us to | |
3308 | allocate and build the private_field_bits and protected_field_bits | |
3309 | bitfields. */ | |
3310 | ||
c5aa993b | 3311 | for (scan = fip->list; scan != NULL; scan = scan->next) |
c906108c SS |
3312 | { |
3313 | nfields++; | |
c5aa993b | 3314 | if (scan->visibility != VISIBILITY_PUBLIC) |
c906108c SS |
3315 | { |
3316 | non_public_fields++; | |
3317 | } | |
3318 | } | |
3319 | ||
3320 | /* Now we know how many fields there are, and whether or not there are any | |
3321 | non-public fields. Record the field count, allocate space for the | |
3322 | array of fields, and create blank visibility bitfields if necessary. */ | |
3323 | ||
3324 | TYPE_NFIELDS (type) = nfields; | |
3325 | TYPE_FIELDS (type) = (struct field *) | |
3326 | TYPE_ALLOC (type, sizeof (struct field) * nfields); | |
3327 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields); | |
3328 | ||
3329 | if (non_public_fields) | |
3330 | { | |
3331 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
3332 | ||
3333 | TYPE_FIELD_PRIVATE_BITS (type) = | |
3334 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
3335 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
3336 | ||
3337 | TYPE_FIELD_PROTECTED_BITS (type) = | |
3338 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
3339 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
3340 | ||
3341 | TYPE_FIELD_IGNORE_BITS (type) = | |
3342 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
3343 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
3344 | } | |
3345 | ||
3346 | /* Copy the saved-up fields into the field vector. Start from the head | |
3347 | of the list, adding to the tail of the field array, so that they end | |
3348 | up in the same order in the array in which they were added to the list. */ | |
3349 | ||
3350 | while (nfields-- > 0) | |
3351 | { | |
c5aa993b JM |
3352 | TYPE_FIELD (type, nfields) = fip->list->field; |
3353 | switch (fip->list->visibility) | |
c906108c | 3354 | { |
c5aa993b JM |
3355 | case VISIBILITY_PRIVATE: |
3356 | SET_TYPE_FIELD_PRIVATE (type, nfields); | |
3357 | break; | |
c906108c | 3358 | |
c5aa993b JM |
3359 | case VISIBILITY_PROTECTED: |
3360 | SET_TYPE_FIELD_PROTECTED (type, nfields); | |
3361 | break; | |
c906108c | 3362 | |
c5aa993b JM |
3363 | case VISIBILITY_IGNORE: |
3364 | SET_TYPE_FIELD_IGNORE (type, nfields); | |
3365 | break; | |
c906108c | 3366 | |
c5aa993b JM |
3367 | case VISIBILITY_PUBLIC: |
3368 | break; | |
c906108c | 3369 | |
c5aa993b JM |
3370 | default: |
3371 | /* Unknown visibility. Complain and treat it as public. */ | |
3372 | { | |
e2e0b3e5 | 3373 | complaint (&symfile_complaints, _("Unknown visibility `%c' for field"), |
23136709 | 3374 | fip->list->visibility); |
c5aa993b JM |
3375 | } |
3376 | break; | |
c906108c | 3377 | } |
c5aa993b | 3378 | fip->list = fip->list->next; |
c906108c SS |
3379 | } |
3380 | return 1; | |
3381 | } | |
3382 | ||
2ae1c2d2 | 3383 | |
2ae1c2d2 JB |
3384 | /* Complain that the compiler has emitted more than one definition for the |
3385 | structure type TYPE. */ | |
3386 | static void | |
3387 | complain_about_struct_wipeout (struct type *type) | |
3388 | { | |
3389 | char *name = ""; | |
3390 | char *kind = ""; | |
3391 | ||
3392 | if (TYPE_TAG_NAME (type)) | |
3393 | { | |
3394 | name = TYPE_TAG_NAME (type); | |
3395 | switch (TYPE_CODE (type)) | |
3396 | { | |
3397 | case TYPE_CODE_STRUCT: kind = "struct "; break; | |
3398 | case TYPE_CODE_UNION: kind = "union "; break; | |
3399 | case TYPE_CODE_ENUM: kind = "enum "; break; | |
3400 | default: kind = ""; | |
3401 | } | |
3402 | } | |
3403 | else if (TYPE_NAME (type)) | |
3404 | { | |
3405 | name = TYPE_NAME (type); | |
3406 | kind = ""; | |
3407 | } | |
3408 | else | |
3409 | { | |
3410 | name = "<unknown>"; | |
3411 | kind = ""; | |
3412 | } | |
3413 | ||
23136709 | 3414 | complaint (&symfile_complaints, |
e2e0b3e5 | 3415 | _("struct/union type gets multiply defined: %s%s"), kind, name); |
2ae1c2d2 JB |
3416 | } |
3417 | ||
621791b8 PM |
3418 | /* Set the length for all variants of a same main_type, which are |
3419 | connected in the closed chain. | |
3420 | ||
3421 | This is something that needs to be done when a type is defined *after* | |
3422 | some cross references to this type have already been read. Consider | |
3423 | for instance the following scenario where we have the following two | |
3424 | stabs entries: | |
3425 | ||
3426 | .stabs "t:p(0,21)=*(0,22)=k(0,23)=xsdummy:",160,0,28,-24 | |
3427 | .stabs "dummy:T(0,23)=s16x:(0,1),0,3[...]" | |
3428 | ||
3429 | A stubbed version of type dummy is created while processing the first | |
3430 | stabs entry. The length of that type is initially set to zero, since | |
3431 | it is unknown at this point. Also, a "constant" variation of type | |
3432 | "dummy" is created as well (this is the "(0,22)=k(0,23)" section of | |
3433 | the stabs line). | |
3434 | ||
3435 | The second stabs entry allows us to replace the stubbed definition | |
3436 | with the real definition. However, we still need to adjust the length | |
3437 | of the "constant" variation of that type, as its length was left | |
3438 | untouched during the main type replacement... */ | |
3439 | ||
3440 | static void | |
9e69f3b6 | 3441 | set_length_in_type_chain (struct type *type) |
621791b8 PM |
3442 | { |
3443 | struct type *ntype = TYPE_CHAIN (type); | |
3444 | ||
3445 | while (ntype != type) | |
3446 | { | |
3447 | if (TYPE_LENGTH(ntype) == 0) | |
3448 | TYPE_LENGTH (ntype) = TYPE_LENGTH (type); | |
3449 | else | |
3450 | complain_about_struct_wipeout (ntype); | |
3451 | ntype = TYPE_CHAIN (ntype); | |
3452 | } | |
3453 | } | |
2ae1c2d2 | 3454 | |
c906108c SS |
3455 | /* Read the description of a structure (or union type) and return an object |
3456 | describing the type. | |
3457 | ||
3458 | PP points to a character pointer that points to the next unconsumed token | |
3459 | in the the stabs string. For example, given stabs "A:T4=s4a:1,0,32;;", | |
3460 | *PP will point to "4a:1,0,32;;". | |
3461 | ||
3462 | TYPE points to an incomplete type that needs to be filled in. | |
3463 | ||
3464 | OBJFILE points to the current objfile from which the stabs information is | |
3465 | being read. (Note that it is redundant in that TYPE also contains a pointer | |
3466 | to this same objfile, so it might be a good idea to eliminate it. FIXME). | |
c5aa993b | 3467 | */ |
c906108c SS |
3468 | |
3469 | static struct type * | |
2ae1c2d2 JB |
3470 | read_struct_type (char **pp, struct type *type, enum type_code type_code, |
3471 | struct objfile *objfile) | |
c906108c SS |
3472 | { |
3473 | struct cleanup *back_to; | |
3474 | struct field_info fi; | |
3475 | ||
3476 | fi.list = NULL; | |
3477 | fi.fnlist = NULL; | |
3478 | ||
2ae1c2d2 JB |
3479 | /* When describing struct/union/class types in stabs, G++ always drops |
3480 | all qualifications from the name. So if you've got: | |
3481 | struct A { ... struct B { ... }; ... }; | |
3482 | then G++ will emit stabs for `struct A::B' that call it simply | |
3483 | `struct B'. Obviously, if you've got a real top-level definition for | |
3484 | `struct B', or other nested definitions, this is going to cause | |
3485 | problems. | |
3486 | ||
3487 | Obviously, GDB can't fix this by itself, but it can at least avoid | |
3488 | scribbling on existing structure type objects when new definitions | |
3489 | appear. */ | |
3490 | if (! (TYPE_CODE (type) == TYPE_CODE_UNDEF | |
3491 | || TYPE_STUB (type))) | |
3492 | { | |
3493 | complain_about_struct_wipeout (type); | |
3494 | ||
3495 | /* It's probably best to return the type unchanged. */ | |
3496 | return type; | |
3497 | } | |
3498 | ||
c906108c SS |
3499 | back_to = make_cleanup (null_cleanup, 0); |
3500 | ||
3501 | INIT_CPLUS_SPECIFIC (type); | |
2ae1c2d2 | 3502 | TYPE_CODE (type) = type_code; |
876cecd0 | 3503 | TYPE_STUB (type) = 0; |
c906108c SS |
3504 | |
3505 | /* First comes the total size in bytes. */ | |
3506 | ||
3507 | { | |
3508 | int nbits; | |
433759f7 | 3509 | |
94e10a22 | 3510 | TYPE_LENGTH (type) = read_huge_number (pp, 0, &nbits, 0); |
c906108c SS |
3511 | if (nbits != 0) |
3512 | return error_type (pp, objfile); | |
621791b8 | 3513 | set_length_in_type_chain (type); |
c906108c SS |
3514 | } |
3515 | ||
3516 | /* Now read the baseclasses, if any, read the regular C struct or C++ | |
3517 | class member fields, attach the fields to the type, read the C++ | |
3518 | member functions, attach them to the type, and then read any tilde | |
3519 | field (baseclass specifier for the class holding the main vtable). */ | |
3520 | ||
3521 | if (!read_baseclasses (&fi, pp, type, objfile) | |
3522 | || !read_struct_fields (&fi, pp, type, objfile) | |
3523 | || !attach_fields_to_type (&fi, type, objfile) | |
3524 | || !read_member_functions (&fi, pp, type, objfile) | |
3525 | || !attach_fn_fields_to_type (&fi, type) | |
3526 | || !read_tilde_fields (&fi, pp, type, objfile)) | |
3527 | { | |
3528 | type = error_type (pp, objfile); | |
3529 | } | |
3530 | ||
3531 | do_cleanups (back_to); | |
3532 | return (type); | |
3533 | } | |
3534 | ||
3535 | /* Read a definition of an array type, | |
3536 | and create and return a suitable type object. | |
3537 | Also creates a range type which represents the bounds of that | |
3538 | array. */ | |
3539 | ||
3540 | static struct type * | |
aa1ee363 | 3541 | read_array_type (char **pp, struct type *type, |
fba45db2 | 3542 | struct objfile *objfile) |
c906108c SS |
3543 | { |
3544 | struct type *index_type, *element_type, *range_type; | |
3545 | int lower, upper; | |
3546 | int adjustable = 0; | |
3547 | int nbits; | |
3548 | ||
3549 | /* Format of an array type: | |
3550 | "ar<index type>;lower;upper;<array_contents_type>". | |
3551 | OS9000: "arlower,upper;<array_contents_type>". | |
3552 | ||
3553 | Fortran adjustable arrays use Adigits or Tdigits for lower or upper; | |
3554 | for these, produce a type like float[][]. */ | |
3555 | ||
c906108c SS |
3556 | { |
3557 | index_type = read_type (pp, objfile); | |
3558 | if (**pp != ';') | |
3559 | /* Improper format of array type decl. */ | |
3560 | return error_type (pp, objfile); | |
3561 | ++*pp; | |
3562 | } | |
3563 | ||
3564 | if (!(**pp >= '0' && **pp <= '9') && **pp != '-') | |
3565 | { | |
3566 | (*pp)++; | |
3567 | adjustable = 1; | |
3568 | } | |
94e10a22 | 3569 | lower = read_huge_number (pp, ';', &nbits, 0); |
cdecafbe | 3570 | |
c906108c SS |
3571 | if (nbits != 0) |
3572 | return error_type (pp, objfile); | |
3573 | ||
3574 | if (!(**pp >= '0' && **pp <= '9') && **pp != '-') | |
3575 | { | |
3576 | (*pp)++; | |
3577 | adjustable = 1; | |
3578 | } | |
94e10a22 | 3579 | upper = read_huge_number (pp, ';', &nbits, 0); |
c906108c SS |
3580 | if (nbits != 0) |
3581 | return error_type (pp, objfile); | |
c5aa993b | 3582 | |
c906108c SS |
3583 | element_type = read_type (pp, objfile); |
3584 | ||
3585 | if (adjustable) | |
3586 | { | |
3587 | lower = 0; | |
3588 | upper = -1; | |
3589 | } | |
3590 | ||
3591 | range_type = | |
3592 | create_range_type ((struct type *) NULL, index_type, lower, upper); | |
3593 | type = create_array_type (type, element_type, range_type); | |
3594 | ||
3595 | return type; | |
3596 | } | |
3597 | ||
3598 | ||
3599 | /* Read a definition of an enumeration type, | |
3600 | and create and return a suitable type object. | |
3601 | Also defines the symbols that represent the values of the type. */ | |
3602 | ||
3603 | static struct type * | |
aa1ee363 | 3604 | read_enum_type (char **pp, struct type *type, |
fba45db2 | 3605 | struct objfile *objfile) |
c906108c | 3606 | { |
5e2b427d | 3607 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
52f0bd74 | 3608 | char *p; |
c906108c | 3609 | char *name; |
52f0bd74 AC |
3610 | long n; |
3611 | struct symbol *sym; | |
c906108c SS |
3612 | int nsyms = 0; |
3613 | struct pending **symlist; | |
3614 | struct pending *osyms, *syms; | |
3615 | int o_nsyms; | |
3616 | int nbits; | |
3617 | int unsigned_enum = 1; | |
3618 | ||
3619 | #if 0 | |
3620 | /* FIXME! The stabs produced by Sun CC merrily define things that ought | |
3621 | to be file-scope, between N_FN entries, using N_LSYM. What's a mother | |
3622 | to do? For now, force all enum values to file scope. */ | |
3623 | if (within_function) | |
3624 | symlist = &local_symbols; | |
3625 | else | |
3626 | #endif | |
3627 | symlist = &file_symbols; | |
3628 | osyms = *symlist; | |
3629 | o_nsyms = osyms ? osyms->nsyms : 0; | |
3630 | ||
c906108c SS |
3631 | /* The aix4 compiler emits an extra field before the enum members; |
3632 | my guess is it's a type of some sort. Just ignore it. */ | |
3633 | if (**pp == '-') | |
3634 | { | |
3635 | /* Skip over the type. */ | |
3636 | while (**pp != ':') | |
c5aa993b | 3637 | (*pp)++; |
c906108c SS |
3638 | |
3639 | /* Skip over the colon. */ | |
3640 | (*pp)++; | |
3641 | } | |
3642 | ||
3643 | /* Read the value-names and their values. | |
3644 | The input syntax is NAME:VALUE,NAME:VALUE, and so on. | |
3645 | A semicolon or comma instead of a NAME means the end. */ | |
3646 | while (**pp && **pp != ';' && **pp != ',') | |
3647 | { | |
3648 | STABS_CONTINUE (pp, objfile); | |
3649 | p = *pp; | |
c5aa993b JM |
3650 | while (*p != ':') |
3651 | p++; | |
4a146b47 | 3652 | name = obsavestring (*pp, p - *pp, &objfile->objfile_obstack); |
c906108c | 3653 | *pp = p + 1; |
94e10a22 | 3654 | n = read_huge_number (pp, ',', &nbits, 0); |
c906108c SS |
3655 | if (nbits != 0) |
3656 | return error_type (pp, objfile); | |
3657 | ||
3658 | sym = (struct symbol *) | |
4a146b47 | 3659 | obstack_alloc (&objfile->objfile_obstack, sizeof (struct symbol)); |
c906108c | 3660 | memset (sym, 0, sizeof (struct symbol)); |
3567439c | 3661 | SYMBOL_SET_LINKAGE_NAME (sym, name); |
33e5013e | 3662 | SYMBOL_SET_LANGUAGE (sym, current_subfile->language); |
c906108c | 3663 | SYMBOL_CLASS (sym) = LOC_CONST; |
176620f1 | 3664 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
3665 | SYMBOL_VALUE (sym) = n; |
3666 | if (n < 0) | |
3667 | unsigned_enum = 0; | |
3668 | add_symbol_to_list (sym, symlist); | |
3669 | nsyms++; | |
3670 | } | |
3671 | ||
3672 | if (**pp == ';') | |
3673 | (*pp)++; /* Skip the semicolon. */ | |
3674 | ||
3675 | /* Now fill in the fields of the type-structure. */ | |
3676 | ||
5e2b427d | 3677 | TYPE_LENGTH (type) = gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT; |
621791b8 | 3678 | set_length_in_type_chain (type); |
c906108c | 3679 | TYPE_CODE (type) = TYPE_CODE_ENUM; |
876cecd0 | 3680 | TYPE_STUB (type) = 0; |
c906108c | 3681 | if (unsigned_enum) |
876cecd0 | 3682 | TYPE_UNSIGNED (type) = 1; |
c906108c SS |
3683 | TYPE_NFIELDS (type) = nsyms; |
3684 | TYPE_FIELDS (type) = (struct field *) | |
3685 | TYPE_ALLOC (type, sizeof (struct field) * nsyms); | |
3686 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nsyms); | |
3687 | ||
3688 | /* Find the symbols for the values and put them into the type. | |
3689 | The symbols can be found in the symlist that we put them on | |
3690 | to cause them to be defined. osyms contains the old value | |
3691 | of that symlist; everything up to there was defined by us. */ | |
3692 | /* Note that we preserve the order of the enum constants, so | |
3693 | that in something like "enum {FOO, LAST_THING=FOO}" we print | |
3694 | FOO, not LAST_THING. */ | |
3695 | ||
3696 | for (syms = *symlist, n = nsyms - 1; syms; syms = syms->next) | |
3697 | { | |
3698 | int last = syms == osyms ? o_nsyms : 0; | |
3699 | int j = syms->nsyms; | |
433759f7 | 3700 | |
c906108c SS |
3701 | for (; --j >= last; --n) |
3702 | { | |
3703 | struct symbol *xsym = syms->symbol[j]; | |
433759f7 | 3704 | |
c906108c | 3705 | SYMBOL_TYPE (xsym) = type; |
3567439c | 3706 | TYPE_FIELD_NAME (type, n) = SYMBOL_LINKAGE_NAME (xsym); |
c906108c SS |
3707 | TYPE_FIELD_BITPOS (type, n) = SYMBOL_VALUE (xsym); |
3708 | TYPE_FIELD_BITSIZE (type, n) = 0; | |
3709 | } | |
3710 | if (syms == osyms) | |
3711 | break; | |
3712 | } | |
3713 | ||
3714 | return type; | |
3715 | } | |
3716 | ||
3717 | /* Sun's ACC uses a somewhat saner method for specifying the builtin | |
3718 | typedefs in every file (for int, long, etc): | |
3719 | ||
c5aa993b JM |
3720 | type = b <signed> <width> <format type>; <offset>; <nbits> |
3721 | signed = u or s. | |
3722 | optional format type = c or b for char or boolean. | |
3723 | offset = offset from high order bit to start bit of type. | |
3724 | width is # bytes in object of this type, nbits is # bits in type. | |
c906108c SS |
3725 | |
3726 | The width/offset stuff appears to be for small objects stored in | |
3727 | larger ones (e.g. `shorts' in `int' registers). We ignore it for now, | |
3728 | FIXME. */ | |
3729 | ||
3730 | static struct type * | |
35a2f538 | 3731 | read_sun_builtin_type (char **pp, int typenums[2], struct objfile *objfile) |
c906108c SS |
3732 | { |
3733 | int type_bits; | |
3734 | int nbits; | |
3735 | int signed_type; | |
3736 | enum type_code code = TYPE_CODE_INT; | |
3737 | ||
3738 | switch (**pp) | |
3739 | { | |
c5aa993b JM |
3740 | case 's': |
3741 | signed_type = 1; | |
3742 | break; | |
3743 | case 'u': | |
3744 | signed_type = 0; | |
3745 | break; | |
3746 | default: | |
3747 | return error_type (pp, objfile); | |
c906108c SS |
3748 | } |
3749 | (*pp)++; | |
3750 | ||
3751 | /* For some odd reason, all forms of char put a c here. This is strange | |
3752 | because no other type has this honor. We can safely ignore this because | |
3753 | we actually determine 'char'acterness by the number of bits specified in | |
3754 | the descriptor. | |
3755 | Boolean forms, e.g Fortran logical*X, put a b here. */ | |
3756 | ||
3757 | if (**pp == 'c') | |
3758 | (*pp)++; | |
3759 | else if (**pp == 'b') | |
3760 | { | |
3761 | code = TYPE_CODE_BOOL; | |
3762 | (*pp)++; | |
3763 | } | |
3764 | ||
3765 | /* The first number appears to be the number of bytes occupied | |
3766 | by this type, except that unsigned short is 4 instead of 2. | |
3767 | Since this information is redundant with the third number, | |
3768 | we will ignore it. */ | |
94e10a22 | 3769 | read_huge_number (pp, ';', &nbits, 0); |
c906108c SS |
3770 | if (nbits != 0) |
3771 | return error_type (pp, objfile); | |
3772 | ||
3773 | /* The second number is always 0, so ignore it too. */ | |
94e10a22 | 3774 | read_huge_number (pp, ';', &nbits, 0); |
c906108c SS |
3775 | if (nbits != 0) |
3776 | return error_type (pp, objfile); | |
3777 | ||
3778 | /* The third number is the number of bits for this type. */ | |
94e10a22 | 3779 | type_bits = read_huge_number (pp, 0, &nbits, 0); |
c906108c SS |
3780 | if (nbits != 0) |
3781 | return error_type (pp, objfile); | |
3782 | /* The type *should* end with a semicolon. If it are embedded | |
3783 | in a larger type the semicolon may be the only way to know where | |
3784 | the type ends. If this type is at the end of the stabstring we | |
3785 | can deal with the omitted semicolon (but we don't have to like | |
3786 | it). Don't bother to complain(), Sun's compiler omits the semicolon | |
3787 | for "void". */ | |
3788 | if (**pp == ';') | |
3789 | ++(*pp); | |
3790 | ||
3791 | if (type_bits == 0) | |
3792 | return init_type (TYPE_CODE_VOID, 1, | |
c5aa993b | 3793 | signed_type ? 0 : TYPE_FLAG_UNSIGNED, (char *) NULL, |
c906108c SS |
3794 | objfile); |
3795 | else | |
3796 | return init_type (code, | |
3797 | type_bits / TARGET_CHAR_BIT, | |
c5aa993b | 3798 | signed_type ? 0 : TYPE_FLAG_UNSIGNED, (char *) NULL, |
c906108c SS |
3799 | objfile); |
3800 | } | |
3801 | ||
3802 | static struct type * | |
35a2f538 | 3803 | read_sun_floating_type (char **pp, int typenums[2], struct objfile *objfile) |
c906108c SS |
3804 | { |
3805 | int nbits; | |
3806 | int details; | |
3807 | int nbytes; | |
f65ca430 | 3808 | struct type *rettype; |
c906108c SS |
3809 | |
3810 | /* The first number has more details about the type, for example | |
3811 | FN_COMPLEX. */ | |
94e10a22 | 3812 | details = read_huge_number (pp, ';', &nbits, 0); |
c906108c SS |
3813 | if (nbits != 0) |
3814 | return error_type (pp, objfile); | |
3815 | ||
3816 | /* The second number is the number of bytes occupied by this type */ | |
94e10a22 | 3817 | nbytes = read_huge_number (pp, ';', &nbits, 0); |
c906108c SS |
3818 | if (nbits != 0) |
3819 | return error_type (pp, objfile); | |
3820 | ||
3821 | if (details == NF_COMPLEX || details == NF_COMPLEX16 | |
3822 | || details == NF_COMPLEX32) | |
f65ca430 DJ |
3823 | { |
3824 | rettype = init_type (TYPE_CODE_COMPLEX, nbytes, 0, NULL, objfile); | |
3825 | TYPE_TARGET_TYPE (rettype) | |
3826 | = init_type (TYPE_CODE_FLT, nbytes / 2, 0, NULL, objfile); | |
3827 | return rettype; | |
3828 | } | |
c906108c SS |
3829 | |
3830 | return init_type (TYPE_CODE_FLT, nbytes, 0, NULL, objfile); | |
3831 | } | |
3832 | ||
3833 | /* Read a number from the string pointed to by *PP. | |
3834 | The value of *PP is advanced over the number. | |
3835 | If END is nonzero, the character that ends the | |
3836 | number must match END, or an error happens; | |
3837 | and that character is skipped if it does match. | |
3838 | If END is zero, *PP is left pointing to that character. | |
3839 | ||
94e10a22 JG |
3840 | If TWOS_COMPLEMENT_BITS is set to a strictly positive value and if |
3841 | the number is represented in an octal representation, assume that | |
3842 | it is represented in a 2's complement representation with a size of | |
3843 | TWOS_COMPLEMENT_BITS. | |
3844 | ||
c906108c SS |
3845 | If the number fits in a long, set *BITS to 0 and return the value. |
3846 | If not, set *BITS to be the number of bits in the number and return 0. | |
3847 | ||
3848 | If encounter garbage, set *BITS to -1 and return 0. */ | |
3849 | ||
c2d11a7d | 3850 | static long |
94e10a22 | 3851 | read_huge_number (char **pp, int end, int *bits, int twos_complement_bits) |
c906108c SS |
3852 | { |
3853 | char *p = *pp; | |
3854 | int sign = 1; | |
51e9e0d4 | 3855 | int sign_bit = 0; |
c2d11a7d | 3856 | long n = 0; |
c906108c SS |
3857 | int radix = 10; |
3858 | char overflow = 0; | |
3859 | int nbits = 0; | |
3860 | int c; | |
c2d11a7d | 3861 | long upper_limit; |
a2699720 | 3862 | int twos_complement_representation = 0; |
c5aa993b | 3863 | |
c906108c SS |
3864 | if (*p == '-') |
3865 | { | |
3866 | sign = -1; | |
3867 | p++; | |
3868 | } | |
3869 | ||
3870 | /* Leading zero means octal. GCC uses this to output values larger | |
3871 | than an int (because that would be hard in decimal). */ | |
3872 | if (*p == '0') | |
3873 | { | |
3874 | radix = 8; | |
3875 | p++; | |
3876 | } | |
3877 | ||
a2699720 PA |
3878 | /* Skip extra zeros. */ |
3879 | while (*p == '0') | |
3880 | p++; | |
3881 | ||
3882 | if (sign > 0 && radix == 8 && twos_complement_bits > 0) | |
3883 | { | |
3884 | /* Octal, possibly signed. Check if we have enough chars for a | |
3885 | negative number. */ | |
3886 | ||
3887 | size_t len; | |
3888 | char *p1 = p; | |
433759f7 | 3889 | |
a2699720 PA |
3890 | while ((c = *p1) >= '0' && c < '8') |
3891 | p1++; | |
3892 | ||
3893 | len = p1 - p; | |
3894 | if (len > twos_complement_bits / 3 | |
3895 | || (twos_complement_bits % 3 == 0 && len == twos_complement_bits / 3)) | |
3896 | { | |
3897 | /* Ok, we have enough characters for a signed value, check | |
3898 | for signness by testing if the sign bit is set. */ | |
3899 | sign_bit = (twos_complement_bits % 3 + 2) % 3; | |
3900 | c = *p - '0'; | |
3901 | if (c & (1 << sign_bit)) | |
3902 | { | |
3903 | /* Definitely signed. */ | |
3904 | twos_complement_representation = 1; | |
3905 | sign = -1; | |
3906 | } | |
3907 | } | |
3908 | } | |
3909 | ||
1b831c93 | 3910 | upper_limit = LONG_MAX / radix; |
c906108c SS |
3911 | |
3912 | while ((c = *p++) >= '0' && c < ('0' + radix)) | |
3913 | { | |
3914 | if (n <= upper_limit) | |
94e10a22 JG |
3915 | { |
3916 | if (twos_complement_representation) | |
3917 | { | |
a2699720 PA |
3918 | /* Octal, signed, twos complement representation. In |
3919 | this case, n is the corresponding absolute value. */ | |
3920 | if (n == 0) | |
3921 | { | |
3922 | long sn = c - '0' - ((2 * (c - '0')) | (2 << sign_bit)); | |
433759f7 | 3923 | |
a2699720 PA |
3924 | n = -sn; |
3925 | } | |
94e10a22 JG |
3926 | else |
3927 | { | |
a2699720 PA |
3928 | n *= radix; |
3929 | n -= c - '0'; | |
94e10a22 | 3930 | } |
94e10a22 JG |
3931 | } |
3932 | else | |
3933 | { | |
3934 | /* unsigned representation */ | |
3935 | n *= radix; | |
3936 | n += c - '0'; /* FIXME this overflows anyway */ | |
3937 | } | |
3938 | } | |
c906108c | 3939 | else |
94e10a22 | 3940 | overflow = 1; |
c5aa993b | 3941 | |
c906108c | 3942 | /* This depends on large values being output in octal, which is |
c5aa993b | 3943 | what GCC does. */ |
c906108c SS |
3944 | if (radix == 8) |
3945 | { | |
3946 | if (nbits == 0) | |
3947 | { | |
3948 | if (c == '0') | |
3949 | /* Ignore leading zeroes. */ | |
3950 | ; | |
3951 | else if (c == '1') | |
3952 | nbits = 1; | |
3953 | else if (c == '2' || c == '3') | |
3954 | nbits = 2; | |
3955 | else | |
3956 | nbits = 3; | |
3957 | } | |
3958 | else | |
3959 | nbits += 3; | |
3960 | } | |
3961 | } | |
3962 | if (end) | |
3963 | { | |
3964 | if (c && c != end) | |
3965 | { | |
3966 | if (bits != NULL) | |
3967 | *bits = -1; | |
3968 | return 0; | |
3969 | } | |
3970 | } | |
3971 | else | |
3972 | --p; | |
3973 | ||
a2699720 PA |
3974 | if (radix == 8 && twos_complement_bits > 0 && nbits > twos_complement_bits) |
3975 | { | |
3976 | /* We were supposed to parse a number with maximum | |
3977 | TWOS_COMPLEMENT_BITS bits, but something went wrong. */ | |
3978 | if (bits != NULL) | |
3979 | *bits = -1; | |
3980 | return 0; | |
3981 | } | |
3982 | ||
c906108c SS |
3983 | *pp = p; |
3984 | if (overflow) | |
3985 | { | |
3986 | if (nbits == 0) | |
3987 | { | |
3988 | /* Large decimal constants are an error (because it is hard to | |
3989 | count how many bits are in them). */ | |
3990 | if (bits != NULL) | |
3991 | *bits = -1; | |
3992 | return 0; | |
3993 | } | |
c5aa993b | 3994 | |
c906108c | 3995 | /* -0x7f is the same as 0x80. So deal with it by adding one to |
a2699720 PA |
3996 | the number of bits. Two's complement represention octals |
3997 | can't have a '-' in front. */ | |
3998 | if (sign == -1 && !twos_complement_representation) | |
c906108c SS |
3999 | ++nbits; |
4000 | if (bits) | |
4001 | *bits = nbits; | |
4002 | } | |
4003 | else | |
4004 | { | |
4005 | if (bits) | |
4006 | *bits = 0; | |
a2699720 | 4007 | return n * sign; |
c906108c SS |
4008 | } |
4009 | /* It's *BITS which has the interesting information. */ | |
4010 | return 0; | |
4011 | } | |
4012 | ||
4013 | static struct type * | |
94e10a22 JG |
4014 | read_range_type (char **pp, int typenums[2], int type_size, |
4015 | struct objfile *objfile) | |
c906108c | 4016 | { |
5e2b427d | 4017 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
4018 | char *orig_pp = *pp; |
4019 | int rangenums[2]; | |
c2d11a7d | 4020 | long n2, n3; |
c906108c SS |
4021 | int n2bits, n3bits; |
4022 | int self_subrange; | |
4023 | struct type *result_type; | |
4024 | struct type *index_type = NULL; | |
4025 | ||
4026 | /* First comes a type we are a subrange of. | |
4027 | In C it is usually 0, 1 or the type being defined. */ | |
4028 | if (read_type_number (pp, rangenums) != 0) | |
4029 | return error_type (pp, objfile); | |
4030 | self_subrange = (rangenums[0] == typenums[0] && | |
4031 | rangenums[1] == typenums[1]); | |
4032 | ||
4033 | if (**pp == '=') | |
4034 | { | |
4035 | *pp = orig_pp; | |
4036 | index_type = read_type (pp, objfile); | |
4037 | } | |
4038 | ||
4039 | /* A semicolon should now follow; skip it. */ | |
4040 | if (**pp == ';') | |
4041 | (*pp)++; | |
4042 | ||
4043 | /* The remaining two operands are usually lower and upper bounds | |
4044 | of the range. But in some special cases they mean something else. */ | |
94e10a22 JG |
4045 | n2 = read_huge_number (pp, ';', &n2bits, type_size); |
4046 | n3 = read_huge_number (pp, ';', &n3bits, type_size); | |
c906108c SS |
4047 | |
4048 | if (n2bits == -1 || n3bits == -1) | |
4049 | return error_type (pp, objfile); | |
4050 | ||
4051 | if (index_type) | |
4052 | goto handle_true_range; | |
4053 | ||
4054 | /* If limits are huge, must be large integral type. */ | |
4055 | if (n2bits != 0 || n3bits != 0) | |
4056 | { | |
4057 | char got_signed = 0; | |
4058 | char got_unsigned = 0; | |
4059 | /* Number of bits in the type. */ | |
4060 | int nbits = 0; | |
4061 | ||
94e10a22 JG |
4062 | /* If a type size attribute has been specified, the bounds of |
4063 | the range should fit in this size. If the lower bounds needs | |
4064 | more bits than the upper bound, then the type is signed. */ | |
4065 | if (n2bits <= type_size && n3bits <= type_size) | |
4066 | { | |
4067 | if (n2bits == type_size && n2bits > n3bits) | |
4068 | got_signed = 1; | |
4069 | else | |
4070 | got_unsigned = 1; | |
4071 | nbits = type_size; | |
4072 | } | |
c906108c | 4073 | /* Range from 0 to <large number> is an unsigned large integral type. */ |
94e10a22 | 4074 | else if ((n2bits == 0 && n2 == 0) && n3bits != 0) |
c906108c SS |
4075 | { |
4076 | got_unsigned = 1; | |
4077 | nbits = n3bits; | |
4078 | } | |
4079 | /* Range from <large number> to <large number>-1 is a large signed | |
c5aa993b JM |
4080 | integral type. Take care of the case where <large number> doesn't |
4081 | fit in a long but <large number>-1 does. */ | |
c906108c SS |
4082 | else if ((n2bits != 0 && n3bits != 0 && n2bits == n3bits + 1) |
4083 | || (n2bits != 0 && n3bits == 0 | |
c2d11a7d JM |
4084 | && (n2bits == sizeof (long) * HOST_CHAR_BIT) |
4085 | && n3 == LONG_MAX)) | |
c906108c SS |
4086 | { |
4087 | got_signed = 1; | |
4088 | nbits = n2bits; | |
4089 | } | |
4090 | ||
4091 | if (got_signed || got_unsigned) | |
4092 | { | |
4093 | return init_type (TYPE_CODE_INT, nbits / TARGET_CHAR_BIT, | |
4094 | got_unsigned ? TYPE_FLAG_UNSIGNED : 0, NULL, | |
4095 | objfile); | |
4096 | } | |
4097 | else | |
4098 | return error_type (pp, objfile); | |
4099 | } | |
4100 | ||
4101 | /* A type defined as a subrange of itself, with bounds both 0, is void. */ | |
4102 | if (self_subrange && n2 == 0 && n3 == 0) | |
4103 | return init_type (TYPE_CODE_VOID, 1, 0, NULL, objfile); | |
4104 | ||
4105 | /* If n3 is zero and n2 is positive, we want a floating type, and n2 | |
4106 | is the width in bytes. | |
4107 | ||
4108 | Fortran programs appear to use this for complex types also. To | |
4109 | distinguish between floats and complex, g77 (and others?) seem | |
4110 | to use self-subranges for the complexes, and subranges of int for | |
4111 | the floats. | |
4112 | ||
4113 | Also note that for complexes, g77 sets n2 to the size of one of | |
4114 | the member floats, not the whole complex beast. My guess is that | |
4115 | this was to work well with pre-COMPLEX versions of gdb. */ | |
4116 | ||
4117 | if (n3 == 0 && n2 > 0) | |
4118 | { | |
1300f5dd JB |
4119 | struct type *float_type |
4120 | = init_type (TYPE_CODE_FLT, n2, 0, NULL, objfile); | |
4121 | ||
c906108c SS |
4122 | if (self_subrange) |
4123 | { | |
1300f5dd JB |
4124 | struct type *complex_type = |
4125 | init_type (TYPE_CODE_COMPLEX, 2 * n2, 0, NULL, objfile); | |
433759f7 | 4126 | |
1300f5dd JB |
4127 | TYPE_TARGET_TYPE (complex_type) = float_type; |
4128 | return complex_type; | |
c906108c SS |
4129 | } |
4130 | else | |
1300f5dd | 4131 | return float_type; |
c906108c SS |
4132 | } |
4133 | ||
a2699720 | 4134 | /* If the upper bound is -1, it must really be an unsigned integral. */ |
c906108c SS |
4135 | |
4136 | else if (n2 == 0 && n3 == -1) | |
4137 | { | |
a2699720 | 4138 | int bits = type_size; |
433759f7 | 4139 | |
a2699720 PA |
4140 | if (bits <= 0) |
4141 | { | |
4142 | /* We don't know its size. It is unsigned int or unsigned | |
4143 | long. GCC 2.3.3 uses this for long long too, but that is | |
4144 | just a GDB 3.5 compatibility hack. */ | |
5e2b427d | 4145 | bits = gdbarch_int_bit (gdbarch); |
a2699720 PA |
4146 | } |
4147 | ||
4148 | return init_type (TYPE_CODE_INT, bits / TARGET_CHAR_BIT, | |
c906108c SS |
4149 | TYPE_FLAG_UNSIGNED, NULL, objfile); |
4150 | } | |
4151 | ||
4152 | /* Special case: char is defined (Who knows why) as a subrange of | |
4153 | itself with range 0-127. */ | |
4154 | else if (self_subrange && n2 == 0 && n3 == 127) | |
973ccf8b | 4155 | return init_type (TYPE_CODE_INT, 1, TYPE_FLAG_NOSIGN, NULL, objfile); |
c906108c | 4156 | |
c906108c SS |
4157 | /* We used to do this only for subrange of self or subrange of int. */ |
4158 | else if (n2 == 0) | |
4159 | { | |
a0b3c4fd JM |
4160 | /* -1 is used for the upper bound of (4 byte) "unsigned int" and |
4161 | "unsigned long", and we already checked for that, | |
4162 | so don't need to test for it here. */ | |
4163 | ||
c906108c SS |
4164 | if (n3 < 0) |
4165 | /* n3 actually gives the size. */ | |
c5aa993b | 4166 | return init_type (TYPE_CODE_INT, -n3, TYPE_FLAG_UNSIGNED, |
c906108c | 4167 | NULL, objfile); |
c906108c | 4168 | |
7be570e7 | 4169 | /* Is n3 == 2**(8n)-1 for some integer n? Then it's an |
a0b3c4fd JM |
4170 | unsigned n-byte integer. But do require n to be a power of |
4171 | two; we don't want 3- and 5-byte integers flying around. */ | |
4172 | { | |
4173 | int bytes; | |
4174 | unsigned long bits; | |
4175 | ||
4176 | bits = n3; | |
4177 | for (bytes = 0; (bits & 0xff) == 0xff; bytes++) | |
4178 | bits >>= 8; | |
4179 | if (bits == 0 | |
4180 | && ((bytes - 1) & bytes) == 0) /* "bytes is a power of two" */ | |
4181 | return init_type (TYPE_CODE_INT, bytes, TYPE_FLAG_UNSIGNED, NULL, | |
4182 | objfile); | |
4183 | } | |
c906108c SS |
4184 | } |
4185 | /* I think this is for Convex "long long". Since I don't know whether | |
4186 | Convex sets self_subrange, I also accept that particular size regardless | |
4187 | of self_subrange. */ | |
4188 | else if (n3 == 0 && n2 < 0 | |
4189 | && (self_subrange | |
9a76efb6 | 4190 | || n2 == -gdbarch_long_long_bit |
5e2b427d | 4191 | (gdbarch) / TARGET_CHAR_BIT)) |
c5aa993b JM |
4192 | return init_type (TYPE_CODE_INT, -n2, 0, NULL, objfile); |
4193 | else if (n2 == -n3 - 1) | |
c906108c SS |
4194 | { |
4195 | if (n3 == 0x7f) | |
4196 | return init_type (TYPE_CODE_INT, 1, 0, NULL, objfile); | |
4197 | if (n3 == 0x7fff) | |
4198 | return init_type (TYPE_CODE_INT, 2, 0, NULL, objfile); | |
4199 | if (n3 == 0x7fffffff) | |
4200 | return init_type (TYPE_CODE_INT, 4, 0, NULL, objfile); | |
4201 | } | |
4202 | ||
4203 | /* We have a real range type on our hands. Allocate space and | |
4204 | return a real pointer. */ | |
c5aa993b | 4205 | handle_true_range: |
c906108c SS |
4206 | |
4207 | if (self_subrange) | |
46bf5051 | 4208 | index_type = objfile_type (objfile)->builtin_int; |
c906108c | 4209 | else |
46bf5051 | 4210 | index_type = *dbx_lookup_type (rangenums, objfile); |
c906108c SS |
4211 | if (index_type == NULL) |
4212 | { | |
4213 | /* Does this actually ever happen? Is that why we are worrying | |
4214 | about dealing with it rather than just calling error_type? */ | |
4215 | ||
23136709 | 4216 | complaint (&symfile_complaints, |
e2e0b3e5 | 4217 | _("base type %d of range type is not defined"), rangenums[1]); |
5e2b427d | 4218 | |
46bf5051 | 4219 | index_type = objfile_type (objfile)->builtin_int; |
c906108c SS |
4220 | } |
4221 | ||
4222 | result_type = create_range_type ((struct type *) NULL, index_type, n2, n3); | |
4223 | return (result_type); | |
4224 | } | |
4225 | ||
4226 | /* Read in an argument list. This is a list of types, separated by commas | |
0a029df5 DJ |
4227 | and terminated with END. Return the list of types read in, or NULL |
4228 | if there is an error. */ | |
c906108c | 4229 | |
ad2f7632 DJ |
4230 | static struct field * |
4231 | read_args (char **pp, int end, struct objfile *objfile, int *nargsp, | |
4232 | int *varargsp) | |
c906108c SS |
4233 | { |
4234 | /* FIXME! Remove this arbitrary limit! */ | |
ad2f7632 DJ |
4235 | struct type *types[1024]; /* allow for fns of 1023 parameters */ |
4236 | int n = 0, i; | |
4237 | struct field *rval; | |
c906108c SS |
4238 | |
4239 | while (**pp != end) | |
4240 | { | |
4241 | if (**pp != ',') | |
4242 | /* Invalid argument list: no ','. */ | |
0a029df5 | 4243 | return NULL; |
c906108c SS |
4244 | (*pp)++; |
4245 | STABS_CONTINUE (pp, objfile); | |
4246 | types[n++] = read_type (pp, objfile); | |
4247 | } | |
4248 | (*pp)++; /* get past `end' (the ':' character) */ | |
4249 | ||
d24d8548 JK |
4250 | if (n == 0) |
4251 | { | |
4252 | /* We should read at least the THIS parameter here. Some broken stabs | |
4253 | output contained `(0,41),(0,42)=@s8;-16;,(0,43),(0,1);' where should | |
4254 | have been present ";-16,(0,43)" reference instead. This way the | |
4255 | excessive ";" marker prematurely stops the parameters parsing. */ | |
4256 | ||
4257 | complaint (&symfile_complaints, _("Invalid (empty) method arguments")); | |
4258 | *varargsp = 0; | |
4259 | } | |
4260 | else if (TYPE_CODE (types[n - 1]) != TYPE_CODE_VOID) | |
ad2f7632 | 4261 | *varargsp = 1; |
c906108c SS |
4262 | else |
4263 | { | |
ad2f7632 DJ |
4264 | n--; |
4265 | *varargsp = 0; | |
c906108c | 4266 | } |
ad2f7632 DJ |
4267 | |
4268 | rval = (struct field *) xmalloc (n * sizeof (struct field)); | |
4269 | memset (rval, 0, n * sizeof (struct field)); | |
4270 | for (i = 0; i < n; i++) | |
4271 | rval[i].type = types[i]; | |
4272 | *nargsp = n; | |
c906108c SS |
4273 | return rval; |
4274 | } | |
4275 | \f | |
4276 | /* Common block handling. */ | |
4277 | ||
4278 | /* List of symbols declared since the last BCOMM. This list is a tail | |
4279 | of local_symbols. When ECOMM is seen, the symbols on the list | |
4280 | are noted so their proper addresses can be filled in later, | |
4281 | using the common block base address gotten from the assembler | |
4282 | stabs. */ | |
4283 | ||
4284 | static struct pending *common_block; | |
4285 | static int common_block_i; | |
4286 | ||
4287 | /* Name of the current common block. We get it from the BCOMM instead of the | |
4288 | ECOMM to match IBM documentation (even though IBM puts the name both places | |
4289 | like everyone else). */ | |
4290 | static char *common_block_name; | |
4291 | ||
4292 | /* Process a N_BCOMM symbol. The storage for NAME is not guaranteed | |
4293 | to remain after this function returns. */ | |
4294 | ||
4295 | void | |
fba45db2 | 4296 | common_block_start (char *name, struct objfile *objfile) |
c906108c SS |
4297 | { |
4298 | if (common_block_name != NULL) | |
4299 | { | |
23136709 | 4300 | complaint (&symfile_complaints, |
e2e0b3e5 | 4301 | _("Invalid symbol data: common block within common block")); |
c906108c SS |
4302 | } |
4303 | common_block = local_symbols; | |
4304 | common_block_i = local_symbols ? local_symbols->nsyms : 0; | |
4305 | common_block_name = obsavestring (name, strlen (name), | |
4a146b47 | 4306 | &objfile->objfile_obstack); |
c906108c SS |
4307 | } |
4308 | ||
4309 | /* Process a N_ECOMM symbol. */ | |
4310 | ||
4311 | void | |
fba45db2 | 4312 | common_block_end (struct objfile *objfile) |
c906108c SS |
4313 | { |
4314 | /* Symbols declared since the BCOMM are to have the common block | |
4315 | start address added in when we know it. common_block and | |
4316 | common_block_i point to the first symbol after the BCOMM in | |
4317 | the local_symbols list; copy the list and hang it off the | |
4318 | symbol for the common block name for later fixup. */ | |
4319 | int i; | |
4320 | struct symbol *sym; | |
4321 | struct pending *new = 0; | |
4322 | struct pending *next; | |
4323 | int j; | |
4324 | ||
4325 | if (common_block_name == NULL) | |
4326 | { | |
e2e0b3e5 | 4327 | complaint (&symfile_complaints, _("ECOMM symbol unmatched by BCOMM")); |
c906108c SS |
4328 | return; |
4329 | } | |
4330 | ||
c5aa993b | 4331 | sym = (struct symbol *) |
4a146b47 | 4332 | obstack_alloc (&objfile->objfile_obstack, sizeof (struct symbol)); |
c906108c | 4333 | memset (sym, 0, sizeof (struct symbol)); |
4a146b47 | 4334 | /* Note: common_block_name already saved on objfile_obstack */ |
3567439c | 4335 | SYMBOL_SET_LINKAGE_NAME (sym, common_block_name); |
c906108c SS |
4336 | SYMBOL_CLASS (sym) = LOC_BLOCK; |
4337 | ||
4338 | /* Now we copy all the symbols which have been defined since the BCOMM. */ | |
4339 | ||
4340 | /* Copy all the struct pendings before common_block. */ | |
4341 | for (next = local_symbols; | |
4342 | next != NULL && next != common_block; | |
4343 | next = next->next) | |
4344 | { | |
4345 | for (j = 0; j < next->nsyms; j++) | |
4346 | add_symbol_to_list (next->symbol[j], &new); | |
4347 | } | |
4348 | ||
4349 | /* Copy however much of COMMON_BLOCK we need. If COMMON_BLOCK is | |
4350 | NULL, it means copy all the local symbols (which we already did | |
4351 | above). */ | |
4352 | ||
4353 | if (common_block != NULL) | |
4354 | for (j = common_block_i; j < common_block->nsyms; j++) | |
4355 | add_symbol_to_list (common_block->symbol[j], &new); | |
4356 | ||
4357 | SYMBOL_TYPE (sym) = (struct type *) new; | |
4358 | ||
4359 | /* Should we be putting local_symbols back to what it was? | |
4360 | Does it matter? */ | |
4361 | ||
3567439c | 4362 | i = hashname (SYMBOL_LINKAGE_NAME (sym)); |
c906108c SS |
4363 | SYMBOL_VALUE_CHAIN (sym) = global_sym_chain[i]; |
4364 | global_sym_chain[i] = sym; | |
4365 | common_block_name = NULL; | |
4366 | } | |
4367 | ||
4368 | /* Add a common block's start address to the offset of each symbol | |
4369 | declared to be in it (by being between a BCOMM/ECOMM pair that uses | |
4370 | the common block name). */ | |
4371 | ||
4372 | static void | |
fba45db2 | 4373 | fix_common_block (struct symbol *sym, int valu) |
c906108c SS |
4374 | { |
4375 | struct pending *next = (struct pending *) SYMBOL_TYPE (sym); | |
433759f7 | 4376 | |
c5aa993b | 4377 | for (; next; next = next->next) |
c906108c | 4378 | { |
aa1ee363 | 4379 | int j; |
433759f7 | 4380 | |
c906108c SS |
4381 | for (j = next->nsyms - 1; j >= 0; j--) |
4382 | SYMBOL_VALUE_ADDRESS (next->symbol[j]) += valu; | |
4383 | } | |
4384 | } | |
c5aa993b | 4385 | \f |
c906108c SS |
4386 | |
4387 | ||
bf362611 JB |
4388 | /* Add {TYPE, TYPENUMS} to the NONAME_UNDEFS vector. |
4389 | See add_undefined_type for more details. */ | |
c906108c | 4390 | |
a7a48797 | 4391 | static void |
bf362611 JB |
4392 | add_undefined_type_noname (struct type *type, int typenums[2]) |
4393 | { | |
4394 | struct nat nat; | |
4395 | ||
4396 | nat.typenums[0] = typenums [0]; | |
4397 | nat.typenums[1] = typenums [1]; | |
4398 | nat.type = type; | |
4399 | ||
4400 | if (noname_undefs_length == noname_undefs_allocated) | |
4401 | { | |
4402 | noname_undefs_allocated *= 2; | |
4403 | noname_undefs = (struct nat *) | |
4404 | xrealloc ((char *) noname_undefs, | |
4405 | noname_undefs_allocated * sizeof (struct nat)); | |
4406 | } | |
4407 | noname_undefs[noname_undefs_length++] = nat; | |
4408 | } | |
4409 | ||
4410 | /* Add TYPE to the UNDEF_TYPES vector. | |
4411 | See add_undefined_type for more details. */ | |
4412 | ||
4413 | static void | |
4414 | add_undefined_type_1 (struct type *type) | |
c906108c SS |
4415 | { |
4416 | if (undef_types_length == undef_types_allocated) | |
4417 | { | |
4418 | undef_types_allocated *= 2; | |
4419 | undef_types = (struct type **) | |
4420 | xrealloc ((char *) undef_types, | |
4421 | undef_types_allocated * sizeof (struct type *)); | |
4422 | } | |
4423 | undef_types[undef_types_length++] = type; | |
4424 | } | |
4425 | ||
bf362611 JB |
4426 | /* What about types defined as forward references inside of a small lexical |
4427 | scope? */ | |
4428 | /* Add a type to the list of undefined types to be checked through | |
4429 | once this file has been read in. | |
4430 | ||
4431 | In practice, we actually maintain two such lists: The first list | |
4432 | (UNDEF_TYPES) is used for types whose name has been provided, and | |
4433 | concerns forward references (eg 'xs' or 'xu' forward references); | |
4434 | the second list (NONAME_UNDEFS) is used for types whose name is | |
4435 | unknown at creation time, because they were referenced through | |
4436 | their type number before the actual type was declared. | |
4437 | This function actually adds the given type to the proper list. */ | |
4438 | ||
4439 | static void | |
4440 | add_undefined_type (struct type *type, int typenums[2]) | |
4441 | { | |
4442 | if (TYPE_TAG_NAME (type) == NULL) | |
4443 | add_undefined_type_noname (type, typenums); | |
4444 | else | |
4445 | add_undefined_type_1 (type); | |
4446 | } | |
4447 | ||
4448 | /* Try to fix all undefined types pushed on the UNDEF_TYPES vector. */ | |
4449 | ||
2c0b251b | 4450 | static void |
46bf5051 | 4451 | cleanup_undefined_types_noname (struct objfile *objfile) |
bf362611 JB |
4452 | { |
4453 | int i; | |
4454 | ||
4455 | for (i = 0; i < noname_undefs_length; i++) | |
4456 | { | |
4457 | struct nat nat = noname_undefs[i]; | |
4458 | struct type **type; | |
4459 | ||
46bf5051 | 4460 | type = dbx_lookup_type (nat.typenums, objfile); |
bf362611 | 4461 | if (nat.type != *type && TYPE_CODE (*type) != TYPE_CODE_UNDEF) |
56953f80 JB |
4462 | { |
4463 | /* The instance flags of the undefined type are still unset, | |
4464 | and needs to be copied over from the reference type. | |
4465 | Since replace_type expects them to be identical, we need | |
4466 | to set these flags manually before hand. */ | |
4467 | TYPE_INSTANCE_FLAGS (nat.type) = TYPE_INSTANCE_FLAGS (*type); | |
4468 | replace_type (nat.type, *type); | |
4469 | } | |
bf362611 JB |
4470 | } |
4471 | ||
4472 | noname_undefs_length = 0; | |
4473 | } | |
4474 | ||
c906108c SS |
4475 | /* Go through each undefined type, see if it's still undefined, and fix it |
4476 | up if possible. We have two kinds of undefined types: | |
4477 | ||
4478 | TYPE_CODE_ARRAY: Array whose target type wasn't defined yet. | |
c5aa993b JM |
4479 | Fix: update array length using the element bounds |
4480 | and the target type's length. | |
c906108c | 4481 | TYPE_CODE_STRUCT, TYPE_CODE_UNION: Structure whose fields were not |
c5aa993b JM |
4482 | yet defined at the time a pointer to it was made. |
4483 | Fix: Do a full lookup on the struct/union tag. */ | |
bf362611 | 4484 | |
2c0b251b | 4485 | static void |
bf362611 | 4486 | cleanup_undefined_types_1 (void) |
c906108c SS |
4487 | { |
4488 | struct type **type; | |
4489 | ||
9e386756 JB |
4490 | /* Iterate over every undefined type, and look for a symbol whose type |
4491 | matches our undefined type. The symbol matches if: | |
4492 | 1. It is a typedef in the STRUCT domain; | |
4493 | 2. It has the same name, and same type code; | |
4494 | 3. The instance flags are identical. | |
4495 | ||
4496 | It is important to check the instance flags, because we have seen | |
4497 | examples where the debug info contained definitions such as: | |
4498 | ||
4499 | "foo_t:t30=B31=xefoo_t:" | |
4500 | ||
4501 | In this case, we have created an undefined type named "foo_t" whose | |
4502 | instance flags is null (when processing "xefoo_t"), and then created | |
4503 | another type with the same name, but with different instance flags | |
4504 | ('B' means volatile). I think that the definition above is wrong, | |
4505 | since the same type cannot be volatile and non-volatile at the same | |
4506 | time, but we need to be able to cope with it when it happens. The | |
4507 | approach taken here is to treat these two types as different. */ | |
4508 | ||
c906108c SS |
4509 | for (type = undef_types; type < undef_types + undef_types_length; type++) |
4510 | { | |
4511 | switch (TYPE_CODE (*type)) | |
4512 | { | |
4513 | ||
c5aa993b JM |
4514 | case TYPE_CODE_STRUCT: |
4515 | case TYPE_CODE_UNION: | |
4516 | case TYPE_CODE_ENUM: | |
c906108c SS |
4517 | { |
4518 | /* Check if it has been defined since. Need to do this here | |
4519 | as well as in check_typedef to deal with the (legitimate in | |
4520 | C though not C++) case of several types with the same name | |
4521 | in different source files. */ | |
74a9bb82 | 4522 | if (TYPE_STUB (*type)) |
c906108c SS |
4523 | { |
4524 | struct pending *ppt; | |
4525 | int i; | |
4526 | /* Name of the type, without "struct" or "union" */ | |
4527 | char *typename = TYPE_TAG_NAME (*type); | |
4528 | ||
4529 | if (typename == NULL) | |
4530 | { | |
e2e0b3e5 | 4531 | complaint (&symfile_complaints, _("need a type name")); |
c906108c SS |
4532 | break; |
4533 | } | |
4534 | for (ppt = file_symbols; ppt; ppt = ppt->next) | |
4535 | { | |
4536 | for (i = 0; i < ppt->nsyms; i++) | |
4537 | { | |
4538 | struct symbol *sym = ppt->symbol[i]; | |
c5aa993b | 4539 | |
c906108c | 4540 | if (SYMBOL_CLASS (sym) == LOC_TYPEDEF |
176620f1 | 4541 | && SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN |
c906108c SS |
4542 | && (TYPE_CODE (SYMBOL_TYPE (sym)) == |
4543 | TYPE_CODE (*type)) | |
9e386756 JB |
4544 | && (TYPE_INSTANCE_FLAGS (*type) == |
4545 | TYPE_INSTANCE_FLAGS (SYMBOL_TYPE (sym))) | |
3567439c | 4546 | && strcmp (SYMBOL_LINKAGE_NAME (sym), |
9e386756 | 4547 | typename) == 0) |
13a393b0 | 4548 | replace_type (*type, SYMBOL_TYPE (sym)); |
c906108c SS |
4549 | } |
4550 | } | |
4551 | } | |
4552 | } | |
4553 | break; | |
4554 | ||
4555 | default: | |
4556 | { | |
23136709 | 4557 | complaint (&symfile_complaints, |
e2e0b3e5 AC |
4558 | _("forward-referenced types left unresolved, " |
4559 | "type code %d."), | |
23136709 | 4560 | TYPE_CODE (*type)); |
c906108c SS |
4561 | } |
4562 | break; | |
4563 | } | |
4564 | } | |
4565 | ||
4566 | undef_types_length = 0; | |
4567 | } | |
4568 | ||
bf362611 JB |
4569 | /* Try to fix all the undefined types we ecountered while processing |
4570 | this unit. */ | |
4571 | ||
4572 | void | |
46bf5051 | 4573 | cleanup_undefined_types (struct objfile *objfile) |
bf362611 JB |
4574 | { |
4575 | cleanup_undefined_types_1 (); | |
46bf5051 | 4576 | cleanup_undefined_types_noname (objfile); |
bf362611 JB |
4577 | } |
4578 | ||
c906108c SS |
4579 | /* Scan through all of the global symbols defined in the object file, |
4580 | assigning values to the debugging symbols that need to be assigned | |
4581 | to. Get these symbols from the minimal symbol table. */ | |
4582 | ||
4583 | void | |
fba45db2 | 4584 | scan_file_globals (struct objfile *objfile) |
c906108c SS |
4585 | { |
4586 | int hash; | |
4587 | struct minimal_symbol *msymbol; | |
507836c0 | 4588 | struct symbol *sym, *prev; |
c906108c SS |
4589 | struct objfile *resolve_objfile; |
4590 | ||
4591 | /* SVR4 based linkers copy referenced global symbols from shared | |
4592 | libraries to the main executable. | |
4593 | If we are scanning the symbols for a shared library, try to resolve | |
4594 | them from the minimal symbols of the main executable first. */ | |
4595 | ||
4596 | if (symfile_objfile && objfile != symfile_objfile) | |
4597 | resolve_objfile = symfile_objfile; | |
4598 | else | |
4599 | resolve_objfile = objfile; | |
4600 | ||
4601 | while (1) | |
4602 | { | |
4603 | /* Avoid expensive loop through all minimal symbols if there are | |
c5aa993b | 4604 | no unresolved symbols. */ |
c906108c SS |
4605 | for (hash = 0; hash < HASHSIZE; hash++) |
4606 | { | |
4607 | if (global_sym_chain[hash]) | |
4608 | break; | |
4609 | } | |
4610 | if (hash >= HASHSIZE) | |
4611 | return; | |
4612 | ||
3567439c | 4613 | ALL_OBJFILE_MSYMBOLS (resolve_objfile, msymbol) |
c906108c SS |
4614 | { |
4615 | QUIT; | |
4616 | ||
4617 | /* Skip static symbols. */ | |
4618 | switch (MSYMBOL_TYPE (msymbol)) | |
4619 | { | |
4620 | case mst_file_text: | |
4621 | case mst_file_data: | |
4622 | case mst_file_bss: | |
4623 | continue; | |
4624 | default: | |
4625 | break; | |
4626 | } | |
4627 | ||
4628 | prev = NULL; | |
4629 | ||
4630 | /* Get the hash index and check all the symbols | |
4631 | under that hash index. */ | |
4632 | ||
3567439c | 4633 | hash = hashname (SYMBOL_LINKAGE_NAME (msymbol)); |
c906108c SS |
4634 | |
4635 | for (sym = global_sym_chain[hash]; sym;) | |
4636 | { | |
3567439c DJ |
4637 | if (strcmp (SYMBOL_LINKAGE_NAME (msymbol), |
4638 | SYMBOL_LINKAGE_NAME (sym)) == 0) | |
c906108c | 4639 | { |
c906108c SS |
4640 | /* Splice this symbol out of the hash chain and |
4641 | assign the value we have to it. */ | |
4642 | if (prev) | |
4643 | { | |
4644 | SYMBOL_VALUE_CHAIN (prev) = SYMBOL_VALUE_CHAIN (sym); | |
4645 | } | |
4646 | else | |
4647 | { | |
4648 | global_sym_chain[hash] = SYMBOL_VALUE_CHAIN (sym); | |
4649 | } | |
c5aa993b | 4650 | |
c906108c SS |
4651 | /* Check to see whether we need to fix up a common block. */ |
4652 | /* Note: this code might be executed several times for | |
4653 | the same symbol if there are multiple references. */ | |
507836c0 | 4654 | if (sym) |
c906108c | 4655 | { |
507836c0 | 4656 | if (SYMBOL_CLASS (sym) == LOC_BLOCK) |
c906108c | 4657 | { |
507836c0 | 4658 | fix_common_block (sym, |
c906108c SS |
4659 | SYMBOL_VALUE_ADDRESS (msymbol)); |
4660 | } | |
4661 | else | |
4662 | { | |
507836c0 | 4663 | SYMBOL_VALUE_ADDRESS (sym) |
c906108c SS |
4664 | = SYMBOL_VALUE_ADDRESS (msymbol); |
4665 | } | |
507836c0 | 4666 | SYMBOL_SECTION (sym) = SYMBOL_SECTION (msymbol); |
c906108c SS |
4667 | } |
4668 | ||
c906108c SS |
4669 | if (prev) |
4670 | { | |
4671 | sym = SYMBOL_VALUE_CHAIN (prev); | |
4672 | } | |
4673 | else | |
4674 | { | |
4675 | sym = global_sym_chain[hash]; | |
4676 | } | |
4677 | } | |
4678 | else | |
4679 | { | |
4680 | prev = sym; | |
4681 | sym = SYMBOL_VALUE_CHAIN (sym); | |
4682 | } | |
4683 | } | |
4684 | } | |
4685 | if (resolve_objfile == objfile) | |
4686 | break; | |
4687 | resolve_objfile = objfile; | |
4688 | } | |
4689 | ||
4690 | /* Change the storage class of any remaining unresolved globals to | |
4691 | LOC_UNRESOLVED and remove them from the chain. */ | |
4692 | for (hash = 0; hash < HASHSIZE; hash++) | |
4693 | { | |
4694 | sym = global_sym_chain[hash]; | |
4695 | while (sym) | |
4696 | { | |
4697 | prev = sym; | |
4698 | sym = SYMBOL_VALUE_CHAIN (sym); | |
4699 | ||
4700 | /* Change the symbol address from the misleading chain value | |
4701 | to address zero. */ | |
4702 | SYMBOL_VALUE_ADDRESS (prev) = 0; | |
4703 | ||
4704 | /* Complain about unresolved common block symbols. */ | |
4705 | if (SYMBOL_CLASS (prev) == LOC_STATIC) | |
4706 | SYMBOL_CLASS (prev) = LOC_UNRESOLVED; | |
4707 | else | |
23136709 | 4708 | complaint (&symfile_complaints, |
e2e0b3e5 | 4709 | _("%s: common block `%s' from global_sym_chain unresolved"), |
3567439c | 4710 | objfile->name, SYMBOL_PRINT_NAME (prev)); |
c906108c SS |
4711 | } |
4712 | } | |
4713 | memset (global_sym_chain, 0, sizeof (global_sym_chain)); | |
4714 | } | |
4715 | ||
4716 | /* Initialize anything that needs initializing when starting to read | |
4717 | a fresh piece of a symbol file, e.g. reading in the stuff corresponding | |
4718 | to a psymtab. */ | |
4719 | ||
4720 | void | |
fba45db2 | 4721 | stabsread_init (void) |
c906108c SS |
4722 | { |
4723 | } | |
4724 | ||
4725 | /* Initialize anything that needs initializing when a completely new | |
4726 | symbol file is specified (not just adding some symbols from another | |
4727 | file, e.g. a shared library). */ | |
4728 | ||
4729 | void | |
fba45db2 | 4730 | stabsread_new_init (void) |
c906108c SS |
4731 | { |
4732 | /* Empty the hash table of global syms looking for values. */ | |
4733 | memset (global_sym_chain, 0, sizeof (global_sym_chain)); | |
4734 | } | |
4735 | ||
4736 | /* Initialize anything that needs initializing at the same time as | |
4737 | start_symtab() is called. */ | |
4738 | ||
c5aa993b | 4739 | void |
fba45db2 | 4740 | start_stabs (void) |
c906108c SS |
4741 | { |
4742 | global_stabs = NULL; /* AIX COFF */ | |
4743 | /* Leave FILENUM of 0 free for builtin types and this file's types. */ | |
4744 | n_this_object_header_files = 1; | |
4745 | type_vector_length = 0; | |
4746 | type_vector = (struct type **) 0; | |
4747 | ||
4748 | /* FIXME: If common_block_name is not already NULL, we should complain(). */ | |
4749 | common_block_name = NULL; | |
c906108c SS |
4750 | } |
4751 | ||
4752 | /* Call after end_symtab() */ | |
4753 | ||
c5aa993b | 4754 | void |
fba45db2 | 4755 | end_stabs (void) |
c906108c SS |
4756 | { |
4757 | if (type_vector) | |
4758 | { | |
b8c9b27d | 4759 | xfree (type_vector); |
c906108c SS |
4760 | } |
4761 | type_vector = 0; | |
4762 | type_vector_length = 0; | |
4763 | previous_stab_code = 0; | |
4764 | } | |
4765 | ||
4766 | void | |
fba45db2 | 4767 | finish_global_stabs (struct objfile *objfile) |
c906108c SS |
4768 | { |
4769 | if (global_stabs) | |
4770 | { | |
4771 | patch_block_stabs (global_symbols, global_stabs, objfile); | |
b8c9b27d | 4772 | xfree (global_stabs); |
c906108c SS |
4773 | global_stabs = NULL; |
4774 | } | |
4775 | } | |
4776 | ||
7e1d63ec AF |
4777 | /* Find the end of the name, delimited by a ':', but don't match |
4778 | ObjC symbols which look like -[Foo bar::]:bla. */ | |
4779 | static char * | |
4780 | find_name_end (char *name) | |
4781 | { | |
4782 | char *s = name; | |
433759f7 | 4783 | |
7e1d63ec AF |
4784 | if (s[0] == '-' || *s == '+') |
4785 | { | |
4786 | /* Must be an ObjC method symbol. */ | |
4787 | if (s[1] != '[') | |
4788 | { | |
8a3fe4f8 | 4789 | error (_("invalid symbol name \"%s\""), name); |
7e1d63ec AF |
4790 | } |
4791 | s = strchr (s, ']'); | |
4792 | if (s == NULL) | |
4793 | { | |
8a3fe4f8 | 4794 | error (_("invalid symbol name \"%s\""), name); |
7e1d63ec AF |
4795 | } |
4796 | return strchr (s, ':'); | |
4797 | } | |
4798 | else | |
4799 | { | |
4800 | return strchr (s, ':'); | |
4801 | } | |
4802 | } | |
4803 | ||
c906108c SS |
4804 | /* Initializer for this module */ |
4805 | ||
4806 | void | |
fba45db2 | 4807 | _initialize_stabsread (void) |
c906108c | 4808 | { |
46bf5051 UW |
4809 | rs6000_builtin_type_data = register_objfile_data (); |
4810 | ||
c906108c SS |
4811 | undef_types_allocated = 20; |
4812 | undef_types_length = 0; | |
4813 | undef_types = (struct type **) | |
4814 | xmalloc (undef_types_allocated * sizeof (struct type *)); | |
bf362611 JB |
4815 | |
4816 | noname_undefs_allocated = 20; | |
4817 | noname_undefs_length = 0; | |
4818 | noname_undefs = (struct nat *) | |
4819 | xmalloc (noname_undefs_allocated * sizeof (struct nat)); | |
c906108c | 4820 | } |