Commit | Line | Data |
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c906108c | 1 | /* Support routines for decoding "stabs" debugging information format. |
cf5b2f1b | 2 | |
28e7fd62 | 3 | Copyright (C) 1986-2013 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 10 | (at your option) any later version. |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b | 17 | You should have received a copy of the GNU General Public License |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
19 | |
20 | /* Support routines for reading and decoding debugging information in | |
21 | the "stabs" format. This format is used with many systems that use | |
22 | the a.out object file format, as well as some systems that use | |
23 | COFF or ELF where the stabs data is placed in a special section. | |
c378eb4e | 24 | Avoid placing any object file format specific code in this file. */ |
c906108c SS |
25 | |
26 | #include "defs.h" | |
27 | #include "gdb_string.h" | |
28 | #include "bfd.h" | |
04ea0df1 | 29 | #include "gdb_obstack.h" |
c906108c SS |
30 | #include "symtab.h" |
31 | #include "gdbtypes.h" | |
32 | #include "expression.h" | |
33 | #include "symfile.h" | |
34 | #include "objfiles.h" | |
3e43a32a | 35 | #include "aout/stab_gnu.h" /* We always use GNU stabs, not native. */ |
c906108c SS |
36 | #include "libaout.h" |
37 | #include "aout/aout64.h" | |
38 | #include "gdb-stabs.h" | |
39 | #include "buildsym.h" | |
40 | #include "complaints.h" | |
41 | #include "demangle.h" | |
50f182aa | 42 | #include "gdb-demangle.h" |
c906108c | 43 | #include "language.h" |
d16aafd8 | 44 | #include "doublest.h" |
de17c821 DJ |
45 | #include "cp-abi.h" |
46 | #include "cp-support.h" | |
8fb822e0 | 47 | #include "gdb_assert.h" |
c906108c SS |
48 | |
49 | #include <ctype.h> | |
50 | ||
51 | /* Ask stabsread.h to define the vars it normally declares `extern'. */ | |
c5aa993b JM |
52 | #define EXTERN |
53 | /**/ | |
c906108c SS |
54 | #include "stabsread.h" /* Our own declarations */ |
55 | #undef EXTERN | |
56 | ||
a14ed312 | 57 | extern void _initialize_stabsread (void); |
392a587b | 58 | |
c906108c SS |
59 | /* The routines that read and process a complete stabs for a C struct or |
60 | C++ class pass lists of data member fields and lists of member function | |
61 | fields in an instance of a field_info structure, as defined below. | |
62 | This is part of some reorganization of low level C++ support and is | |
c378eb4e | 63 | expected to eventually go away... (FIXME) */ |
c906108c SS |
64 | |
65 | struct field_info | |
c5aa993b JM |
66 | { |
67 | struct nextfield | |
68 | { | |
69 | struct nextfield *next; | |
c906108c | 70 | |
c5aa993b JM |
71 | /* This is the raw visibility from the stab. It is not checked |
72 | for being one of the visibilities we recognize, so code which | |
73 | examines this field better be able to deal. */ | |
74 | int visibility; | |
c906108c | 75 | |
c5aa993b JM |
76 | struct field field; |
77 | } | |
78 | *list; | |
79 | struct next_fnfieldlist | |
80 | { | |
81 | struct next_fnfieldlist *next; | |
82 | struct fn_fieldlist fn_fieldlist; | |
83 | } | |
84 | *fnlist; | |
85 | }; | |
c906108c SS |
86 | |
87 | static void | |
a14ed312 KB |
88 | read_one_struct_field (struct field_info *, char **, char *, |
89 | struct type *, struct objfile *); | |
c906108c | 90 | |
a14ed312 | 91 | static struct type *dbx_alloc_type (int[2], struct objfile *); |
c906108c | 92 | |
94e10a22 | 93 | static long read_huge_number (char **, int, int *, int); |
c906108c | 94 | |
a14ed312 | 95 | static struct type *error_type (char **, struct objfile *); |
c906108c SS |
96 | |
97 | static void | |
a14ed312 KB |
98 | patch_block_stabs (struct pending *, struct pending_stabs *, |
99 | struct objfile *); | |
c906108c | 100 | |
46cb6474 | 101 | static void fix_common_block (struct symbol *, CORE_ADDR); |
c906108c | 102 | |
a14ed312 | 103 | static int read_type_number (char **, int *); |
c906108c | 104 | |
a7a48797 EZ |
105 | static struct type *read_type (char **, struct objfile *); |
106 | ||
94e10a22 | 107 | static struct type *read_range_type (char **, int[2], int, struct objfile *); |
c906108c | 108 | |
a14ed312 | 109 | static struct type *read_sun_builtin_type (char **, int[2], struct objfile *); |
c906108c | 110 | |
a14ed312 KB |
111 | static struct type *read_sun_floating_type (char **, int[2], |
112 | struct objfile *); | |
c906108c | 113 | |
a14ed312 | 114 | static struct type *read_enum_type (char **, struct type *, struct objfile *); |
c906108c | 115 | |
46bf5051 | 116 | static struct type *rs6000_builtin_type (int, struct objfile *); |
c906108c SS |
117 | |
118 | static int | |
a14ed312 KB |
119 | read_member_functions (struct field_info *, char **, struct type *, |
120 | struct objfile *); | |
c906108c SS |
121 | |
122 | static int | |
a14ed312 KB |
123 | read_struct_fields (struct field_info *, char **, struct type *, |
124 | struct objfile *); | |
c906108c SS |
125 | |
126 | static int | |
a14ed312 KB |
127 | read_baseclasses (struct field_info *, char **, struct type *, |
128 | struct objfile *); | |
c906108c SS |
129 | |
130 | static int | |
a14ed312 KB |
131 | read_tilde_fields (struct field_info *, char **, struct type *, |
132 | struct objfile *); | |
c906108c | 133 | |
a14ed312 | 134 | static int attach_fn_fields_to_type (struct field_info *, struct type *); |
c906108c | 135 | |
570b8f7c AC |
136 | static int attach_fields_to_type (struct field_info *, struct type *, |
137 | struct objfile *); | |
c906108c | 138 | |
a14ed312 | 139 | static struct type *read_struct_type (char **, struct type *, |
2ae1c2d2 | 140 | enum type_code, |
a14ed312 | 141 | struct objfile *); |
c906108c | 142 | |
a14ed312 KB |
143 | static struct type *read_array_type (char **, struct type *, |
144 | struct objfile *); | |
c906108c | 145 | |
ad2f7632 | 146 | static struct field *read_args (char **, int, struct objfile *, int *, int *); |
c906108c | 147 | |
bf362611 | 148 | static void add_undefined_type (struct type *, int[2]); |
a7a48797 | 149 | |
c906108c | 150 | static int |
a14ed312 KB |
151 | read_cpp_abbrev (struct field_info *, char **, struct type *, |
152 | struct objfile *); | |
c906108c | 153 | |
7e1d63ec AF |
154 | static char *find_name_end (char *name); |
155 | ||
a14ed312 | 156 | static int process_reference (char **string); |
c906108c | 157 | |
a14ed312 | 158 | void stabsread_clear_cache (void); |
7be570e7 | 159 | |
8343f86c DJ |
160 | static const char vptr_name[] = "_vptr$"; |
161 | static const char vb_name[] = "_vb$"; | |
c906108c | 162 | |
23136709 KB |
163 | static void |
164 | invalid_cpp_abbrev_complaint (const char *arg1) | |
165 | { | |
e2e0b3e5 | 166 | complaint (&symfile_complaints, _("invalid C++ abbreviation `%s'"), arg1); |
23136709 | 167 | } |
c906108c | 168 | |
23136709 | 169 | static void |
49b0b195 | 170 | reg_value_complaint (int regnum, int num_regs, const char *sym) |
23136709 KB |
171 | { |
172 | complaint (&symfile_complaints, | |
e2e0b3e5 | 173 | _("register number %d too large (max %d) in symbol %s"), |
49b0b195 | 174 | regnum, num_regs - 1, sym); |
23136709 | 175 | } |
c906108c | 176 | |
23136709 KB |
177 | static void |
178 | stabs_general_complaint (const char *arg1) | |
179 | { | |
180 | complaint (&symfile_complaints, "%s", arg1); | |
181 | } | |
c906108c | 182 | |
c906108c SS |
183 | /* Make a list of forward references which haven't been defined. */ |
184 | ||
185 | static struct type **undef_types; | |
186 | static int undef_types_allocated; | |
187 | static int undef_types_length; | |
188 | static struct symbol *current_symbol = NULL; | |
189 | ||
bf362611 JB |
190 | /* Make a list of nameless types that are undefined. |
191 | This happens when another type is referenced by its number | |
c378eb4e | 192 | before this type is actually defined. For instance "t(0,1)=k(0,2)" |
bf362611 JB |
193 | and type (0,2) is defined only later. */ |
194 | ||
195 | struct nat | |
196 | { | |
197 | int typenums[2]; | |
198 | struct type *type; | |
199 | }; | |
200 | static struct nat *noname_undefs; | |
201 | static int noname_undefs_allocated; | |
202 | static int noname_undefs_length; | |
203 | ||
c906108c SS |
204 | /* Check for and handle cretinous stabs symbol name continuation! */ |
205 | #define STABS_CONTINUE(pp,objfile) \ | |
206 | do { \ | |
207 | if (**(pp) == '\\' || (**(pp) == '?' && (*(pp))[1] == '\0')) \ | |
208 | *(pp) = next_symbol_text (objfile); \ | |
209 | } while (0) | |
210 | \f | |
c906108c SS |
211 | |
212 | /* Look up a dbx type-number pair. Return the address of the slot | |
213 | where the type for that number-pair is stored. | |
214 | The number-pair is in TYPENUMS. | |
215 | ||
216 | This can be used for finding the type associated with that pair | |
217 | or for associating a new type with the pair. */ | |
218 | ||
a7a48797 | 219 | static struct type ** |
46bf5051 | 220 | dbx_lookup_type (int typenums[2], struct objfile *objfile) |
c906108c | 221 | { |
52f0bd74 AC |
222 | int filenum = typenums[0]; |
223 | int index = typenums[1]; | |
c906108c | 224 | unsigned old_len; |
52f0bd74 AC |
225 | int real_filenum; |
226 | struct header_file *f; | |
c906108c SS |
227 | int f_orig_length; |
228 | ||
229 | if (filenum == -1) /* -1,-1 is for temporary types. */ | |
230 | return 0; | |
231 | ||
232 | if (filenum < 0 || filenum >= n_this_object_header_files) | |
233 | { | |
23136709 | 234 | complaint (&symfile_complaints, |
3e43a32a MS |
235 | _("Invalid symbol data: type number " |
236 | "(%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 | |
c378eb4e | 316 | put into the type vector, and so may not be referred to by number. */ |
c906108c SS |
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 | |
c378eb4e | 342 | and fix their symbols in given symbol vector. */ |
c906108c SS |
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 |
c378eb4e | 356 | patch their types! */ |
c5aa993b | 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 | 464 | /* Structure for storing pointers to reference definitions for fast lookup |
c378eb4e | 465 | during "process_later". */ |
c906108c SS |
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 | 479 | |
c378eb4e | 480 | /* Ptr to free cell in chunk's linked list. */ |
c5aa993b | 481 | static int ref_count = 0; |
c906108c | 482 | |
c378eb4e | 483 | /* Number of chunks malloced. */ |
c906108c SS |
484 | static int ref_chunk = 0; |
485 | ||
7be570e7 | 486 | /* This file maintains a cache of stabs aliases found in the symbol |
c378eb4e MS |
487 | table. If the symbol table changes, this cache must be cleared |
488 | or we are left holding onto data in invalid obstacks. */ | |
7be570e7 | 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 | |
c378eb4e MS |
498 | find them, using their reference numbers as our index. |
499 | These will be used later when we resolve references. */ | |
c906108c | 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 | ||
c378eb4e | 547 | /* Read number as reference id. */ |
c906108c SS |
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 | ||
c378eb4e | 568 | /* Defining symbols end in '='. */ |
c5aa993b | 569 | if (*p == '=') |
c906108c | 570 | { |
c378eb4e | 571 | /* Symbol is being defined here. */ |
c906108c SS |
572 | *string = p + 1; |
573 | return refnum; | |
574 | } | |
575 | else | |
576 | { | |
c378eb4e | 577 | /* Must be a reference. Either the symbol has already been defined, |
c906108c SS |
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 | ||
c378eb4e | 597 | regno = gdbarch_sp_regnum (gdbarch); /* Known safe, though useless. */ |
768a979c UW |
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 | |
c378eb4e MS |
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. */ | |
c906108c SS |
623 | |
624 | int nameless; | |
625 | ||
626 | /* Ignore syms with empty names. */ | |
627 | if (string[0] == 0) | |
628 | return 0; | |
629 | ||
c378eb4e | 630 | /* Ignore old-style symbols from cc -go. */ |
c906108c SS |
631 | if (p == 0) |
632 | return 0; | |
633 | ||
634 | while (p[1] == ':') | |
635 | { | |
c5aa993b JM |
636 | p += 2; |
637 | p = strchr (p, ':'); | |
681c238c MS |
638 | if (p == NULL) |
639 | { | |
640 | complaint (&symfile_complaints, | |
641 | _("Bad stabs string '%s'"), string); | |
642 | return NULL; | |
643 | } | |
c906108c SS |
644 | } |
645 | ||
646 | /* If a nameless stab entry, all we need is the type, not the symbol. | |
647 | e.g. ":t10=*2" or a nameless enum like " :T16=ered:0,green:1,blue:2,;" */ | |
648 | nameless = (p == string || ((string[0] == ' ') && (string[1] == ':'))); | |
649 | ||
c5aa993b | 650 | current_symbol = sym = (struct symbol *) |
4a146b47 | 651 | obstack_alloc (&objfile->objfile_obstack, sizeof (struct symbol)); |
c906108c SS |
652 | memset (sym, 0, sizeof (struct symbol)); |
653 | ||
654 | switch (type & N_TYPE) | |
655 | { | |
656 | case N_TEXT: | |
b8fbeb18 | 657 | SYMBOL_SECTION (sym) = SECT_OFF_TEXT (objfile); |
c906108c SS |
658 | break; |
659 | case N_DATA: | |
b8fbeb18 | 660 | SYMBOL_SECTION (sym) = SECT_OFF_DATA (objfile); |
c906108c SS |
661 | break; |
662 | case N_BSS: | |
b8fbeb18 | 663 | SYMBOL_SECTION (sym) = SECT_OFF_BSS (objfile); |
c906108c SS |
664 | break; |
665 | } | |
666 | ||
667 | if (processing_gcc_compilation) | |
668 | { | |
669 | /* GCC 2.x puts the line number in desc. SunOS apparently puts in the | |
c5aa993b JM |
670 | number of bytes occupied by a type or object, which we ignore. */ |
671 | SYMBOL_LINE (sym) = desc; | |
c906108c SS |
672 | } |
673 | else | |
674 | { | |
c5aa993b | 675 | SYMBOL_LINE (sym) = 0; /* unknown */ |
c906108c SS |
676 | } |
677 | ||
678 | if (is_cplus_marker (string[0])) | |
679 | { | |
680 | /* Special GNU C++ names. */ | |
681 | switch (string[1]) | |
682 | { | |
c5aa993b | 683 | case 't': |
1c9e8358 | 684 | SYMBOL_SET_LINKAGE_NAME (sym, "this"); |
c5aa993b | 685 | break; |
c906108c | 686 | |
c5aa993b | 687 | case 'v': /* $vtbl_ptr_type */ |
c5aa993b | 688 | goto normal; |
c906108c | 689 | |
c5aa993b | 690 | case 'e': |
1c9e8358 | 691 | SYMBOL_SET_LINKAGE_NAME (sym, "eh_throw"); |
c5aa993b | 692 | break; |
c906108c | 693 | |
c5aa993b JM |
694 | case '_': |
695 | /* This was an anonymous type that was never fixed up. */ | |
696 | goto normal; | |
c906108c | 697 | |
c5aa993b JM |
698 | case 'X': |
699 | /* SunPRO (3.0 at least) static variable encoding. */ | |
5e2b427d | 700 | if (gdbarch_static_transform_name_p (gdbarch)) |
149ad273 | 701 | goto normal; |
c378eb4e | 702 | /* ... fall through ... */ |
c906108c | 703 | |
c5aa993b | 704 | default: |
e2e0b3e5 | 705 | complaint (&symfile_complaints, _("Unknown C++ symbol name `%s'"), |
23136709 | 706 | string); |
c378eb4e | 707 | goto normal; /* Do *something* with it. */ |
c906108c SS |
708 | } |
709 | } | |
c906108c SS |
710 | else |
711 | { | |
712 | normal: | |
33e5013e | 713 | SYMBOL_SET_LANGUAGE (sym, current_subfile->language); |
df8a16a1 | 714 | if (SYMBOL_LANGUAGE (sym) == language_cplus) |
71c25dea TT |
715 | { |
716 | char *name = alloca (p - string + 1); | |
433759f7 | 717 | |
71c25dea TT |
718 | memcpy (name, string, p - string); |
719 | name[p - string] = '\0'; | |
720 | new_name = cp_canonicalize_string (name); | |
71c25dea TT |
721 | } |
722 | if (new_name != NULL) | |
723 | { | |
04a679b8 | 724 | SYMBOL_SET_NAMES (sym, new_name, strlen (new_name), 1, objfile); |
71c25dea TT |
725 | xfree (new_name); |
726 | } | |
727 | else | |
04a679b8 | 728 | SYMBOL_SET_NAMES (sym, string, p - string, 1, objfile); |
45c58896 SW |
729 | |
730 | if (SYMBOL_LANGUAGE (sym) == language_cplus) | |
a10964d1 | 731 | cp_scan_for_anonymous_namespaces (sym, objfile); |
45c58896 | 732 | |
c906108c SS |
733 | } |
734 | p++; | |
735 | ||
736 | /* Determine the type of name being defined. */ | |
737 | #if 0 | |
738 | /* Getting GDB to correctly skip the symbol on an undefined symbol | |
739 | descriptor and not ever dump core is a very dodgy proposition if | |
740 | we do things this way. I say the acorn RISC machine can just | |
741 | fix their compiler. */ | |
742 | /* The Acorn RISC machine's compiler can put out locals that don't | |
743 | start with "234=" or "(3,4)=", so assume anything other than the | |
744 | deftypes we know how to handle is a local. */ | |
745 | if (!strchr ("cfFGpPrStTvVXCR", *p)) | |
746 | #else | |
747 | if (isdigit (*p) || *p == '(' || *p == '-') | |
748 | #endif | |
749 | deftype = 'l'; | |
750 | else | |
751 | deftype = *p++; | |
752 | ||
753 | switch (deftype) | |
754 | { | |
755 | case 'c': | |
756 | /* c is a special case, not followed by a type-number. | |
c5aa993b JM |
757 | SYMBOL:c=iVALUE for an integer constant symbol. |
758 | SYMBOL:c=rVALUE for a floating constant symbol. | |
759 | SYMBOL:c=eTYPE,INTVALUE for an enum constant symbol. | |
760 | e.g. "b:c=e6,0" for "const b = blob1" | |
761 | (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */ | |
c906108c SS |
762 | if (*p != '=') |
763 | { | |
764 | SYMBOL_CLASS (sym) = LOC_CONST; | |
765 | SYMBOL_TYPE (sym) = error_type (&p, objfile); | |
176620f1 | 766 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
767 | add_symbol_to_list (sym, &file_symbols); |
768 | return sym; | |
769 | } | |
770 | ++p; | |
771 | switch (*p++) | |
772 | { | |
773 | case 'r': | |
774 | { | |
775 | double d = atof (p); | |
4e38b386 | 776 | gdb_byte *dbl_valu; |
6ccb9162 | 777 | struct type *dbl_type; |
c906108c SS |
778 | |
779 | /* FIXME-if-picky-about-floating-accuracy: Should be using | |
780 | target arithmetic to get the value. real.c in GCC | |
781 | probably has the necessary code. */ | |
782 | ||
46bf5051 | 783 | dbl_type = objfile_type (objfile)->builtin_double; |
4e38b386 | 784 | dbl_valu = |
4a146b47 | 785 | obstack_alloc (&objfile->objfile_obstack, |
6ccb9162 UW |
786 | TYPE_LENGTH (dbl_type)); |
787 | store_typed_floating (dbl_valu, dbl_type, d); | |
788 | ||
789 | SYMBOL_TYPE (sym) = dbl_type; | |
c906108c SS |
790 | SYMBOL_VALUE_BYTES (sym) = dbl_valu; |
791 | SYMBOL_CLASS (sym) = LOC_CONST_BYTES; | |
792 | } | |
793 | break; | |
794 | case 'i': | |
795 | { | |
796 | /* Defining integer constants this way is kind of silly, | |
797 | since 'e' constants allows the compiler to give not | |
798 | only the value, but the type as well. C has at least | |
799 | int, long, unsigned int, and long long as constant | |
800 | types; other languages probably should have at least | |
801 | unsigned as well as signed constants. */ | |
802 | ||
46bf5051 | 803 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_long; |
c906108c SS |
804 | SYMBOL_VALUE (sym) = atoi (p); |
805 | SYMBOL_CLASS (sym) = LOC_CONST; | |
806 | } | |
807 | break; | |
ec8a089a PM |
808 | |
809 | case 'c': | |
810 | { | |
811 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_char; | |
812 | SYMBOL_VALUE (sym) = atoi (p); | |
813 | SYMBOL_CLASS (sym) = LOC_CONST; | |
814 | } | |
815 | break; | |
816 | ||
817 | case 's': | |
818 | { | |
819 | struct type *range_type; | |
820 | int ind = 0; | |
821 | char quote = *p++; | |
ec8a089a PM |
822 | gdb_byte *string_local = (gdb_byte *) alloca (strlen (p)); |
823 | gdb_byte *string_value; | |
824 | ||
825 | if (quote != '\'' && quote != '"') | |
826 | { | |
827 | SYMBOL_CLASS (sym) = LOC_CONST; | |
828 | SYMBOL_TYPE (sym) = error_type (&p, objfile); | |
829 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; | |
830 | add_symbol_to_list (sym, &file_symbols); | |
831 | return sym; | |
832 | } | |
833 | ||
834 | /* Find matching quote, rejecting escaped quotes. */ | |
835 | while (*p && *p != quote) | |
836 | { | |
837 | if (*p == '\\' && p[1] == quote) | |
838 | { | |
839 | string_local[ind] = (gdb_byte) quote; | |
840 | ind++; | |
841 | p += 2; | |
842 | } | |
843 | else if (*p) | |
844 | { | |
845 | string_local[ind] = (gdb_byte) (*p); | |
846 | ind++; | |
847 | p++; | |
848 | } | |
849 | } | |
850 | if (*p != quote) | |
851 | { | |
852 | SYMBOL_CLASS (sym) = LOC_CONST; | |
853 | SYMBOL_TYPE (sym) = error_type (&p, objfile); | |
854 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; | |
855 | add_symbol_to_list (sym, &file_symbols); | |
856 | return sym; | |
857 | } | |
858 | ||
859 | /* NULL terminate the string. */ | |
860 | string_local[ind] = 0; | |
3e43a32a MS |
861 | range_type |
862 | = create_range_type (NULL, | |
863 | objfile_type (objfile)->builtin_int, | |
864 | 0, ind); | |
ec8a089a PM |
865 | SYMBOL_TYPE (sym) = create_array_type (NULL, |
866 | objfile_type (objfile)->builtin_char, | |
867 | range_type); | |
868 | string_value = obstack_alloc (&objfile->objfile_obstack, ind + 1); | |
869 | memcpy (string_value, string_local, ind + 1); | |
870 | p++; | |
871 | ||
872 | SYMBOL_VALUE_BYTES (sym) = string_value; | |
873 | SYMBOL_CLASS (sym) = LOC_CONST_BYTES; | |
874 | } | |
875 | break; | |
876 | ||
c906108c SS |
877 | case 'e': |
878 | /* SYMBOL:c=eTYPE,INTVALUE for a constant symbol whose value | |
879 | can be represented as integral. | |
880 | e.g. "b:c=e6,0" for "const b = blob1" | |
881 | (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */ | |
882 | { | |
883 | SYMBOL_CLASS (sym) = LOC_CONST; | |
884 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
885 | ||
886 | if (*p != ',') | |
887 | { | |
888 | SYMBOL_TYPE (sym) = error_type (&p, objfile); | |
889 | break; | |
890 | } | |
891 | ++p; | |
892 | ||
893 | /* If the value is too big to fit in an int (perhaps because | |
894 | it is unsigned), or something like that, we silently get | |
895 | a bogus value. The type and everything else about it is | |
896 | correct. Ideally, we should be using whatever we have | |
897 | available for parsing unsigned and long long values, | |
898 | however. */ | |
899 | SYMBOL_VALUE (sym) = atoi (p); | |
900 | } | |
901 | break; | |
902 | default: | |
903 | { | |
904 | SYMBOL_CLASS (sym) = LOC_CONST; | |
905 | SYMBOL_TYPE (sym) = error_type (&p, objfile); | |
906 | } | |
907 | } | |
176620f1 | 908 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
909 | add_symbol_to_list (sym, &file_symbols); |
910 | return sym; | |
911 | ||
912 | case 'C': | |
913 | /* The name of a caught exception. */ | |
914 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
915 | SYMBOL_CLASS (sym) = LOC_LABEL; | |
176620f1 | 916 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
917 | SYMBOL_VALUE_ADDRESS (sym) = valu; |
918 | add_symbol_to_list (sym, &local_symbols); | |
919 | break; | |
920 | ||
921 | case 'f': | |
922 | /* A static function definition. */ | |
923 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
924 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
176620f1 | 925 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
926 | add_symbol_to_list (sym, &file_symbols); |
927 | /* fall into process_function_types. */ | |
928 | ||
929 | process_function_types: | |
930 | /* Function result types are described as the result type in stabs. | |
c5aa993b JM |
931 | We need to convert this to the function-returning-type-X type |
932 | in GDB. E.g. "int" is converted to "function returning int". */ | |
c906108c SS |
933 | if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_FUNC) |
934 | SYMBOL_TYPE (sym) = lookup_function_type (SYMBOL_TYPE (sym)); | |
935 | ||
1e698235 DJ |
936 | /* All functions in C++ have prototypes. Stabs does not offer an |
937 | explicit way to identify prototyped or unprototyped functions, | |
938 | but both GCC and Sun CC emit stabs for the "call-as" type rather | |
939 | than the "declared-as" type for unprototyped functions, so | |
940 | we treat all functions as if they were prototyped. This is used | |
941 | primarily for promotion when calling the function from GDB. */ | |
876cecd0 | 942 | TYPE_PROTOTYPED (SYMBOL_TYPE (sym)) = 1; |
c906108c | 943 | |
c378eb4e | 944 | /* fall into process_prototype_types. */ |
c906108c SS |
945 | |
946 | process_prototype_types: | |
947 | /* Sun acc puts declared types of arguments here. */ | |
948 | if (*p == ';') | |
949 | { | |
950 | struct type *ftype = SYMBOL_TYPE (sym); | |
951 | int nsemi = 0; | |
952 | int nparams = 0; | |
953 | char *p1 = p; | |
954 | ||
955 | /* Obtain a worst case guess for the number of arguments | |
956 | by counting the semicolons. */ | |
957 | while (*p1) | |
958 | { | |
959 | if (*p1++ == ';') | |
960 | nsemi++; | |
961 | } | |
962 | ||
c378eb4e | 963 | /* Allocate parameter information fields and fill them in. */ |
c906108c SS |
964 | TYPE_FIELDS (ftype) = (struct field *) |
965 | TYPE_ALLOC (ftype, nsemi * sizeof (struct field)); | |
966 | while (*p++ == ';') | |
967 | { | |
968 | struct type *ptype; | |
969 | ||
970 | /* A type number of zero indicates the start of varargs. | |
c5aa993b | 971 | FIXME: GDB currently ignores vararg functions. */ |
c906108c SS |
972 | if (p[0] == '0' && p[1] == '\0') |
973 | break; | |
974 | ptype = read_type (&p, objfile); | |
975 | ||
976 | /* The Sun compilers mark integer arguments, which should | |
c5aa993b | 977 | be promoted to the width of the calling conventions, with |
c378eb4e | 978 | a type which references itself. This type is turned into |
c5aa993b | 979 | a TYPE_CODE_VOID type by read_type, and we have to turn |
5e2b427d UW |
980 | it back into builtin_int here. |
981 | FIXME: Do we need a new builtin_promoted_int_arg ? */ | |
c906108c | 982 | if (TYPE_CODE (ptype) == TYPE_CODE_VOID) |
46bf5051 | 983 | ptype = objfile_type (objfile)->builtin_int; |
8176bb6d DJ |
984 | TYPE_FIELD_TYPE (ftype, nparams) = ptype; |
985 | TYPE_FIELD_ARTIFICIAL (ftype, nparams++) = 0; | |
c906108c SS |
986 | } |
987 | TYPE_NFIELDS (ftype) = nparams; | |
876cecd0 | 988 | TYPE_PROTOTYPED (ftype) = 1; |
c906108c SS |
989 | } |
990 | break; | |
991 | ||
992 | case 'F': | |
993 | /* A global function definition. */ | |
994 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
995 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
176620f1 | 996 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
997 | add_symbol_to_list (sym, &global_symbols); |
998 | goto process_function_types; | |
999 | ||
1000 | case 'G': | |
1001 | /* For a class G (global) symbol, it appears that the | |
c5aa993b JM |
1002 | value is not correct. It is necessary to search for the |
1003 | corresponding linker definition to find the value. | |
1004 | These definitions appear at the end of the namelist. */ | |
c906108c SS |
1005 | SYMBOL_TYPE (sym) = read_type (&p, objfile); |
1006 | SYMBOL_CLASS (sym) = LOC_STATIC; | |
176620f1 | 1007 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c | 1008 | /* Don't add symbol references to global_sym_chain. |
c5aa993b JM |
1009 | Symbol references don't have valid names and wont't match up with |
1010 | minimal symbols when the global_sym_chain is relocated. | |
1011 | We'll fixup symbol references when we fixup the defining symbol. */ | |
3567439c | 1012 | if (SYMBOL_LINKAGE_NAME (sym) && SYMBOL_LINKAGE_NAME (sym)[0] != '#') |
c906108c | 1013 | { |
3567439c | 1014 | i = hashname (SYMBOL_LINKAGE_NAME (sym)); |
c5aa993b JM |
1015 | SYMBOL_VALUE_CHAIN (sym) = global_sym_chain[i]; |
1016 | global_sym_chain[i] = sym; | |
c906108c SS |
1017 | } |
1018 | add_symbol_to_list (sym, &global_symbols); | |
1019 | break; | |
1020 | ||
1021 | /* This case is faked by a conditional above, | |
c5aa993b JM |
1022 | when there is no code letter in the dbx data. |
1023 | Dbx data never actually contains 'l'. */ | |
c906108c SS |
1024 | case 's': |
1025 | case 'l': | |
1026 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
1027 | SYMBOL_CLASS (sym) = LOC_LOCAL; | |
1028 | SYMBOL_VALUE (sym) = valu; | |
176620f1 | 1029 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1030 | add_symbol_to_list (sym, &local_symbols); |
1031 | break; | |
1032 | ||
1033 | case 'p': | |
1034 | if (*p == 'F') | |
1035 | /* pF is a two-letter code that means a function parameter in Fortran. | |
1036 | The type-number specifies the type of the return value. | |
1037 | Translate it into a pointer-to-function type. */ | |
1038 | { | |
1039 | p++; | |
1040 | SYMBOL_TYPE (sym) | |
1041 | = lookup_pointer_type | |
c5aa993b | 1042 | (lookup_function_type (read_type (&p, objfile))); |
c906108c SS |
1043 | } |
1044 | else | |
1045 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
1046 | ||
7ca9f392 | 1047 | SYMBOL_CLASS (sym) = LOC_ARG; |
c906108c | 1048 | SYMBOL_VALUE (sym) = valu; |
176620f1 | 1049 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
2a2d4dc3 | 1050 | SYMBOL_IS_ARGUMENT (sym) = 1; |
c906108c SS |
1051 | add_symbol_to_list (sym, &local_symbols); |
1052 | ||
5e2b427d | 1053 | if (gdbarch_byte_order (gdbarch) != BFD_ENDIAN_BIG) |
c906108c SS |
1054 | { |
1055 | /* On little-endian machines, this crud is never necessary, | |
1056 | and, if the extra bytes contain garbage, is harmful. */ | |
1057 | break; | |
1058 | } | |
1059 | ||
1060 | /* If it's gcc-compiled, if it says `short', believe it. */ | |
f73e88f9 | 1061 | if (processing_gcc_compilation |
5e2b427d | 1062 | || gdbarch_believe_pcc_promotion (gdbarch)) |
c906108c SS |
1063 | break; |
1064 | ||
5e2b427d | 1065 | if (!gdbarch_believe_pcc_promotion (gdbarch)) |
7a292a7a | 1066 | { |
8ee56bcf AC |
1067 | /* If PCC says a parameter is a short or a char, it is |
1068 | really an int. */ | |
5e2b427d UW |
1069 | if (TYPE_LENGTH (SYMBOL_TYPE (sym)) |
1070 | < gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT | |
8ee56bcf | 1071 | && TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_INT) |
7a292a7a | 1072 | { |
8ee56bcf AC |
1073 | SYMBOL_TYPE (sym) = |
1074 | TYPE_UNSIGNED (SYMBOL_TYPE (sym)) | |
46bf5051 UW |
1075 | ? objfile_type (objfile)->builtin_unsigned_int |
1076 | : objfile_type (objfile)->builtin_int; | |
7a292a7a | 1077 | } |
8ee56bcf | 1078 | break; |
7a292a7a | 1079 | } |
c906108c SS |
1080 | |
1081 | case 'P': | |
1082 | /* acc seems to use P to declare the prototypes of functions that | |
1083 | are referenced by this file. gdb is not prepared to deal | |
1084 | with this extra information. FIXME, it ought to. */ | |
1085 | if (type == N_FUN) | |
1086 | { | |
1087 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
1088 | goto process_prototype_types; | |
1089 | } | |
c5aa993b | 1090 | /*FALLTHROUGH */ |
c906108c SS |
1091 | |
1092 | case 'R': | |
1093 | /* Parameter which is in a register. */ | |
1094 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
2a2d4dc3 | 1095 | SYMBOL_CLASS (sym) = LOC_REGISTER; |
768a979c | 1096 | SYMBOL_REGISTER_OPS (sym) = &stab_register_funcs; |
2a2d4dc3 | 1097 | SYMBOL_IS_ARGUMENT (sym) = 1; |
768a979c | 1098 | SYMBOL_VALUE (sym) = valu; |
176620f1 | 1099 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1100 | add_symbol_to_list (sym, &local_symbols); |
1101 | break; | |
1102 | ||
1103 | case 'r': | |
1104 | /* Register variable (either global or local). */ | |
1105 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
1106 | SYMBOL_CLASS (sym) = LOC_REGISTER; | |
768a979c UW |
1107 | SYMBOL_REGISTER_OPS (sym) = &stab_register_funcs; |
1108 | SYMBOL_VALUE (sym) = valu; | |
176620f1 | 1109 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1110 | if (within_function) |
1111 | { | |
192cb3d4 MK |
1112 | /* Sun cc uses a pair of symbols, one 'p' and one 'r', with |
1113 | the same name to represent an argument passed in a | |
1114 | register. GCC uses 'P' for the same case. So if we find | |
1115 | such a symbol pair we combine it into one 'P' symbol. | |
1116 | For Sun cc we need to do this regardless of | |
1117 | stabs_argument_has_addr, because the compiler puts out | |
1118 | the 'p' symbol even if it never saves the argument onto | |
1119 | the stack. | |
1120 | ||
1121 | On most machines, we want to preserve both symbols, so | |
1122 | that we can still get information about what is going on | |
1123 | with the stack (VAX for computing args_printed, using | |
1124 | stack slots instead of saved registers in backtraces, | |
1125 | etc.). | |
c906108c SS |
1126 | |
1127 | Note that this code illegally combines | |
c5aa993b | 1128 | main(argc) struct foo argc; { register struct foo argc; } |
c906108c SS |
1129 | but this case is considered pathological and causes a warning |
1130 | from a decent compiler. */ | |
1131 | ||
1132 | if (local_symbols | |
1133 | && local_symbols->nsyms > 0 | |
5e2b427d | 1134 | && gdbarch_stabs_argument_has_addr (gdbarch, SYMBOL_TYPE (sym))) |
c906108c SS |
1135 | { |
1136 | struct symbol *prev_sym; | |
433759f7 | 1137 | |
c906108c SS |
1138 | prev_sym = local_symbols->symbol[local_symbols->nsyms - 1]; |
1139 | if ((SYMBOL_CLASS (prev_sym) == LOC_REF_ARG | |
1140 | || SYMBOL_CLASS (prev_sym) == LOC_ARG) | |
3567439c DJ |
1141 | && strcmp (SYMBOL_LINKAGE_NAME (prev_sym), |
1142 | SYMBOL_LINKAGE_NAME (sym)) == 0) | |
c906108c | 1143 | { |
2a2d4dc3 | 1144 | SYMBOL_CLASS (prev_sym) = LOC_REGISTER; |
768a979c | 1145 | SYMBOL_REGISTER_OPS (prev_sym) = &stab_register_funcs; |
c906108c SS |
1146 | /* Use the type from the LOC_REGISTER; that is the type |
1147 | that is actually in that register. */ | |
1148 | SYMBOL_TYPE (prev_sym) = SYMBOL_TYPE (sym); | |
1149 | SYMBOL_VALUE (prev_sym) = SYMBOL_VALUE (sym); | |
1150 | sym = prev_sym; | |
1151 | break; | |
1152 | } | |
1153 | } | |
c5aa993b | 1154 | add_symbol_to_list (sym, &local_symbols); |
c906108c SS |
1155 | } |
1156 | else | |
c5aa993b | 1157 | add_symbol_to_list (sym, &file_symbols); |
c906108c SS |
1158 | break; |
1159 | ||
1160 | case 'S': | |
c378eb4e | 1161 | /* Static symbol at top level of file. */ |
c906108c SS |
1162 | SYMBOL_TYPE (sym) = read_type (&p, objfile); |
1163 | SYMBOL_CLASS (sym) = LOC_STATIC; | |
1164 | SYMBOL_VALUE_ADDRESS (sym) = valu; | |
5e2b427d UW |
1165 | if (gdbarch_static_transform_name_p (gdbarch) |
1166 | && gdbarch_static_transform_name (gdbarch, | |
3567439c DJ |
1167 | SYMBOL_LINKAGE_NAME (sym)) |
1168 | != SYMBOL_LINKAGE_NAME (sym)) | |
c5aa993b JM |
1169 | { |
1170 | struct minimal_symbol *msym; | |
433759f7 | 1171 | |
3e43a32a MS |
1172 | msym = lookup_minimal_symbol (SYMBOL_LINKAGE_NAME (sym), |
1173 | NULL, objfile); | |
c5aa993b JM |
1174 | if (msym != NULL) |
1175 | { | |
0d5cff50 | 1176 | const char *new_name = gdbarch_static_transform_name |
3567439c | 1177 | (gdbarch, SYMBOL_LINKAGE_NAME (sym)); |
433759f7 | 1178 | |
3567439c | 1179 | SYMBOL_SET_LINKAGE_NAME (sym, new_name); |
c5aa993b JM |
1180 | SYMBOL_VALUE_ADDRESS (sym) = SYMBOL_VALUE_ADDRESS (msym); |
1181 | } | |
1182 | } | |
176620f1 | 1183 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1184 | add_symbol_to_list (sym, &file_symbols); |
1185 | break; | |
1186 | ||
1187 | case 't': | |
52eea4ce JB |
1188 | /* In Ada, there is no distinction between typedef and non-typedef; |
1189 | any type declaration implicitly has the equivalent of a typedef, | |
c378eb4e | 1190 | and thus 't' is in fact equivalent to 'Tt'. |
52eea4ce JB |
1191 | |
1192 | Therefore, for Ada units, we check the character immediately | |
1193 | before the 't', and if we do not find a 'T', then make sure to | |
1194 | create the associated symbol in the STRUCT_DOMAIN ('t' definitions | |
1195 | will be stored in the VAR_DOMAIN). If the symbol was indeed | |
1196 | defined as 'Tt' then the STRUCT_DOMAIN symbol will be created | |
1197 | elsewhere, so we don't need to take care of that. | |
1198 | ||
1199 | This is important to do, because of forward references: | |
1200 | The cleanup of undefined types stored in undef_types only uses | |
1201 | STRUCT_DOMAIN symbols to perform the replacement. */ | |
1202 | synonym = (SYMBOL_LANGUAGE (sym) == language_ada && p[-2] != 'T'); | |
1203 | ||
e2cd42dd | 1204 | /* Typedef */ |
c906108c SS |
1205 | SYMBOL_TYPE (sym) = read_type (&p, objfile); |
1206 | ||
1207 | /* For a nameless type, we don't want a create a symbol, thus we | |
c378eb4e | 1208 | did not use `sym'. Return without further processing. */ |
c5aa993b JM |
1209 | if (nameless) |
1210 | return NULL; | |
c906108c SS |
1211 | |
1212 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
1213 | SYMBOL_VALUE (sym) = valu; | |
176620f1 | 1214 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c | 1215 | /* C++ vagaries: we may have a type which is derived from |
c5aa993b JM |
1216 | a base type which did not have its name defined when the |
1217 | derived class was output. We fill in the derived class's | |
1218 | base part member's name here in that case. */ | |
c906108c SS |
1219 | if (TYPE_NAME (SYMBOL_TYPE (sym)) != NULL) |
1220 | if ((TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_STRUCT | |
1221 | || TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_UNION) | |
1222 | && TYPE_N_BASECLASSES (SYMBOL_TYPE (sym))) | |
1223 | { | |
1224 | int j; | |
433759f7 | 1225 | |
c906108c SS |
1226 | for (j = TYPE_N_BASECLASSES (SYMBOL_TYPE (sym)) - 1; j >= 0; j--) |
1227 | if (TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym), j) == 0) | |
1228 | TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym), j) = | |
1229 | type_name_no_tag (TYPE_BASECLASS (SYMBOL_TYPE (sym), j)); | |
1230 | } | |
1231 | ||
1232 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == NULL) | |
1233 | { | |
1234 | /* gcc-2.6 or later (when using -fvtable-thunks) | |
1235 | emits a unique named type for a vtable entry. | |
c378eb4e | 1236 | Some gdb code depends on that specific name. */ |
c906108c SS |
1237 | extern const char vtbl_ptr_name[]; |
1238 | ||
1239 | if ((TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_PTR | |
3567439c | 1240 | && strcmp (SYMBOL_LINKAGE_NAME (sym), vtbl_ptr_name)) |
c906108c SS |
1241 | || TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_FUNC) |
1242 | { | |
1243 | /* If we are giving a name to a type such as "pointer to | |
c5aa993b JM |
1244 | foo" or "function returning foo", we better not set |
1245 | the TYPE_NAME. If the program contains "typedef char | |
1246 | *caddr_t;", we don't want all variables of type char | |
1247 | * to print as caddr_t. This is not just a | |
1248 | consequence of GDB's type management; PCC and GCC (at | |
1249 | least through version 2.4) both output variables of | |
1250 | either type char * or caddr_t with the type number | |
1251 | defined in the 't' symbol for caddr_t. If a future | |
1252 | compiler cleans this up it GDB is not ready for it | |
1253 | yet, but if it becomes ready we somehow need to | |
1254 | disable this check (without breaking the PCC/GCC2.4 | |
1255 | case). | |
1256 | ||
1257 | Sigh. | |
1258 | ||
1259 | Fortunately, this check seems not to be necessary | |
1260 | for anything except pointers or functions. */ | |
c378eb4e MS |
1261 | /* ezannoni: 2000-10-26. This seems to apply for |
1262 | versions of gcc older than 2.8. This was the original | |
49d97c60 | 1263 | problem: with the following code gdb would tell that |
c378eb4e MS |
1264 | the type for name1 is caddr_t, and func is char(). |
1265 | ||
49d97c60 EZ |
1266 | typedef char *caddr_t; |
1267 | char *name2; | |
1268 | struct x | |
1269 | { | |
c378eb4e | 1270 | char *name1; |
49d97c60 EZ |
1271 | } xx; |
1272 | char *func() | |
1273 | { | |
1274 | } | |
1275 | main () {} | |
1276 | */ | |
1277 | ||
c378eb4e | 1278 | /* Pascal accepts names for pointer types. */ |
49d97c60 EZ |
1279 | if (current_subfile->language == language_pascal) |
1280 | { | |
3567439c | 1281 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_LINKAGE_NAME (sym); |
49d97c60 | 1282 | } |
c906108c SS |
1283 | } |
1284 | else | |
3567439c | 1285 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_LINKAGE_NAME (sym); |
c906108c SS |
1286 | } |
1287 | ||
1288 | add_symbol_to_list (sym, &file_symbols); | |
52eea4ce JB |
1289 | |
1290 | if (synonym) | |
1291 | { | |
1292 | /* Create the STRUCT_DOMAIN clone. */ | |
1293 | struct symbol *struct_sym = (struct symbol *) | |
1294 | obstack_alloc (&objfile->objfile_obstack, sizeof (struct symbol)); | |
1295 | ||
1296 | *struct_sym = *sym; | |
1297 | SYMBOL_CLASS (struct_sym) = LOC_TYPEDEF; | |
1298 | SYMBOL_VALUE (struct_sym) = valu; | |
1299 | SYMBOL_DOMAIN (struct_sym) = STRUCT_DOMAIN; | |
1300 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) | |
3e43a32a MS |
1301 | TYPE_NAME (SYMBOL_TYPE (sym)) |
1302 | = obconcat (&objfile->objfile_obstack, | |
1303 | SYMBOL_LINKAGE_NAME (sym), | |
1304 | (char *) NULL); | |
52eea4ce JB |
1305 | add_symbol_to_list (struct_sym, &file_symbols); |
1306 | } | |
1307 | ||
c906108c SS |
1308 | break; |
1309 | ||
1310 | case 'T': | |
1311 | /* Struct, union, or enum tag. For GNU C++, this can be be followed | |
c5aa993b | 1312 | by 't' which means we are typedef'ing it as well. */ |
c906108c SS |
1313 | synonym = *p == 't'; |
1314 | ||
1315 | if (synonym) | |
1316 | p++; | |
c906108c SS |
1317 | |
1318 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
25caa7a8 | 1319 | |
c906108c | 1320 | /* For a nameless type, we don't want a create a symbol, thus we |
c378eb4e | 1321 | did not use `sym'. Return without further processing. */ |
c5aa993b JM |
1322 | if (nameless) |
1323 | return NULL; | |
c906108c SS |
1324 | |
1325 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
1326 | SYMBOL_VALUE (sym) = valu; | |
176620f1 | 1327 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 1328 | if (TYPE_TAG_NAME (SYMBOL_TYPE (sym)) == 0) |
3e43a32a MS |
1329 | TYPE_TAG_NAME (SYMBOL_TYPE (sym)) |
1330 | = obconcat (&objfile->objfile_obstack, | |
1331 | SYMBOL_LINKAGE_NAME (sym), | |
1332 | (char *) NULL); | |
c906108c SS |
1333 | add_symbol_to_list (sym, &file_symbols); |
1334 | ||
1335 | if (synonym) | |
1336 | { | |
c378eb4e | 1337 | /* Clone the sym and then modify it. */ |
aa1ee363 | 1338 | struct symbol *typedef_sym = (struct symbol *) |
433759f7 MS |
1339 | obstack_alloc (&objfile->objfile_obstack, sizeof (struct symbol)); |
1340 | ||
c906108c SS |
1341 | *typedef_sym = *sym; |
1342 | SYMBOL_CLASS (typedef_sym) = LOC_TYPEDEF; | |
1343 | SYMBOL_VALUE (typedef_sym) = valu; | |
176620f1 | 1344 | SYMBOL_DOMAIN (typedef_sym) = VAR_DOMAIN; |
c906108c | 1345 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) |
3e43a32a MS |
1346 | TYPE_NAME (SYMBOL_TYPE (sym)) |
1347 | = obconcat (&objfile->objfile_obstack, | |
1348 | SYMBOL_LINKAGE_NAME (sym), | |
1349 | (char *) NULL); | |
c906108c SS |
1350 | add_symbol_to_list (typedef_sym, &file_symbols); |
1351 | } | |
1352 | break; | |
1353 | ||
1354 | case 'V': | |
c378eb4e | 1355 | /* Static symbol of local scope. */ |
c906108c SS |
1356 | SYMBOL_TYPE (sym) = read_type (&p, objfile); |
1357 | SYMBOL_CLASS (sym) = LOC_STATIC; | |
1358 | SYMBOL_VALUE_ADDRESS (sym) = valu; | |
5e2b427d UW |
1359 | if (gdbarch_static_transform_name_p (gdbarch) |
1360 | && gdbarch_static_transform_name (gdbarch, | |
3567439c DJ |
1361 | SYMBOL_LINKAGE_NAME (sym)) |
1362 | != SYMBOL_LINKAGE_NAME (sym)) | |
c5aa993b JM |
1363 | { |
1364 | struct minimal_symbol *msym; | |
433759f7 MS |
1365 | |
1366 | msym = lookup_minimal_symbol (SYMBOL_LINKAGE_NAME (sym), | |
1367 | NULL, objfile); | |
c5aa993b JM |
1368 | if (msym != NULL) |
1369 | { | |
0d5cff50 | 1370 | const char *new_name = gdbarch_static_transform_name |
3567439c | 1371 | (gdbarch, SYMBOL_LINKAGE_NAME (sym)); |
433759f7 | 1372 | |
3567439c | 1373 | SYMBOL_SET_LINKAGE_NAME (sym, new_name); |
c5aa993b JM |
1374 | SYMBOL_VALUE_ADDRESS (sym) = SYMBOL_VALUE_ADDRESS (msym); |
1375 | } | |
1376 | } | |
176620f1 | 1377 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1378 | add_symbol_to_list (sym, &local_symbols); |
1379 | break; | |
1380 | ||
1381 | case 'v': | |
1382 | /* Reference parameter */ | |
1383 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
1384 | SYMBOL_CLASS (sym) = LOC_REF_ARG; | |
2a2d4dc3 | 1385 | SYMBOL_IS_ARGUMENT (sym) = 1; |
c906108c | 1386 | SYMBOL_VALUE (sym) = valu; |
176620f1 | 1387 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1388 | add_symbol_to_list (sym, &local_symbols); |
1389 | break; | |
1390 | ||
1391 | case 'a': | |
1392 | /* Reference parameter which is in a register. */ | |
1393 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
1394 | SYMBOL_CLASS (sym) = LOC_REGPARM_ADDR; | |
768a979c | 1395 | SYMBOL_REGISTER_OPS (sym) = &stab_register_funcs; |
2a2d4dc3 | 1396 | SYMBOL_IS_ARGUMENT (sym) = 1; |
768a979c | 1397 | SYMBOL_VALUE (sym) = valu; |
176620f1 | 1398 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1399 | add_symbol_to_list (sym, &local_symbols); |
1400 | break; | |
1401 | ||
1402 | case 'X': | |
1403 | /* This is used by Sun FORTRAN for "function result value". | |
c5aa993b JM |
1404 | Sun claims ("dbx and dbxtool interfaces", 2nd ed) |
1405 | that Pascal uses it too, but when I tried it Pascal used | |
1406 | "x:3" (local symbol) instead. */ | |
c906108c SS |
1407 | SYMBOL_TYPE (sym) = read_type (&p, objfile); |
1408 | SYMBOL_CLASS (sym) = LOC_LOCAL; | |
1409 | SYMBOL_VALUE (sym) = valu; | |
176620f1 | 1410 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1411 | add_symbol_to_list (sym, &local_symbols); |
1412 | break; | |
c906108c SS |
1413 | |
1414 | default: | |
1415 | SYMBOL_TYPE (sym) = error_type (&p, objfile); | |
1416 | SYMBOL_CLASS (sym) = LOC_CONST; | |
1417 | SYMBOL_VALUE (sym) = 0; | |
176620f1 | 1418 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1419 | add_symbol_to_list (sym, &file_symbols); |
1420 | break; | |
1421 | } | |
1422 | ||
192cb3d4 MK |
1423 | /* Some systems pass variables of certain types by reference instead |
1424 | of by value, i.e. they will pass the address of a structure (in a | |
1425 | register or on the stack) instead of the structure itself. */ | |
c906108c | 1426 | |
5e2b427d | 1427 | if (gdbarch_stabs_argument_has_addr (gdbarch, SYMBOL_TYPE (sym)) |
2a2d4dc3 | 1428 | && SYMBOL_IS_ARGUMENT (sym)) |
c906108c | 1429 | { |
2a2d4dc3 | 1430 | /* We have to convert LOC_REGISTER to LOC_REGPARM_ADDR (for |
192cb3d4 | 1431 | variables passed in a register). */ |
2a2d4dc3 | 1432 | if (SYMBOL_CLASS (sym) == LOC_REGISTER) |
192cb3d4 MK |
1433 | SYMBOL_CLASS (sym) = LOC_REGPARM_ADDR; |
1434 | /* Likewise for converting LOC_ARG to LOC_REF_ARG (for the 7th | |
1435 | and subsequent arguments on SPARC, for example). */ | |
1436 | else if (SYMBOL_CLASS (sym) == LOC_ARG) | |
1437 | SYMBOL_CLASS (sym) = LOC_REF_ARG; | |
c906108c SS |
1438 | } |
1439 | ||
c906108c SS |
1440 | return sym; |
1441 | } | |
1442 | ||
c906108c SS |
1443 | /* Skip rest of this symbol and return an error type. |
1444 | ||
1445 | General notes on error recovery: error_type always skips to the | |
1446 | end of the symbol (modulo cretinous dbx symbol name continuation). | |
1447 | Thus code like this: | |
1448 | ||
1449 | if (*(*pp)++ != ';') | |
c5aa993b | 1450 | return error_type (pp, objfile); |
c906108c SS |
1451 | |
1452 | is wrong because if *pp starts out pointing at '\0' (typically as the | |
1453 | result of an earlier error), it will be incremented to point to the | |
1454 | start of the next symbol, which might produce strange results, at least | |
1455 | if you run off the end of the string table. Instead use | |
1456 | ||
1457 | if (**pp != ';') | |
c5aa993b | 1458 | return error_type (pp, objfile); |
c906108c SS |
1459 | ++*pp; |
1460 | ||
1461 | or | |
1462 | ||
1463 | if (**pp != ';') | |
c5aa993b | 1464 | foo = error_type (pp, objfile); |
c906108c | 1465 | else |
c5aa993b | 1466 | ++*pp; |
c906108c SS |
1467 | |
1468 | And in case it isn't obvious, the point of all this hair is so the compiler | |
1469 | can define new types and new syntaxes, and old versions of the | |
1470 | debugger will be able to read the new symbol tables. */ | |
1471 | ||
1472 | static struct type * | |
fba45db2 | 1473 | error_type (char **pp, struct objfile *objfile) |
c906108c | 1474 | { |
3e43a32a MS |
1475 | complaint (&symfile_complaints, |
1476 | _("couldn't parse type; debugger out of date?")); | |
c906108c SS |
1477 | while (1) |
1478 | { | |
1479 | /* Skip to end of symbol. */ | |
1480 | while (**pp != '\0') | |
1481 | { | |
1482 | (*pp)++; | |
1483 | } | |
1484 | ||
1485 | /* Check for and handle cretinous dbx symbol name continuation! */ | |
1486 | if ((*pp)[-1] == '\\' || (*pp)[-1] == '?') | |
1487 | { | |
1488 | *pp = next_symbol_text (objfile); | |
1489 | } | |
1490 | else | |
1491 | { | |
1492 | break; | |
1493 | } | |
1494 | } | |
46bf5051 | 1495 | return objfile_type (objfile)->builtin_error; |
c906108c | 1496 | } |
c906108c | 1497 | \f |
c5aa993b | 1498 | |
c906108c SS |
1499 | /* Read type information or a type definition; return the type. Even |
1500 | though this routine accepts either type information or a type | |
1501 | definition, the distinction is relevant--some parts of stabsread.c | |
1502 | assume that type information starts with a digit, '-', or '(' in | |
1503 | deciding whether to call read_type. */ | |
1504 | ||
a7a48797 | 1505 | static struct type * |
aa1ee363 | 1506 | read_type (char **pp, struct objfile *objfile) |
c906108c | 1507 | { |
52f0bd74 | 1508 | struct type *type = 0; |
c906108c SS |
1509 | struct type *type1; |
1510 | int typenums[2]; | |
1511 | char type_descriptor; | |
1512 | ||
1513 | /* Size in bits of type if specified by a type attribute, or -1 if | |
1514 | there is no size attribute. */ | |
1515 | int type_size = -1; | |
1516 | ||
c378eb4e | 1517 | /* Used to distinguish string and bitstring from char-array and set. */ |
c906108c SS |
1518 | int is_string = 0; |
1519 | ||
c378eb4e | 1520 | /* Used to distinguish vector from array. */ |
e2cd42dd MS |
1521 | int is_vector = 0; |
1522 | ||
c906108c SS |
1523 | /* Read type number if present. The type number may be omitted. |
1524 | for instance in a two-dimensional array declared with type | |
1525 | "ar1;1;10;ar1;1;10;4". */ | |
1526 | if ((**pp >= '0' && **pp <= '9') | |
1527 | || **pp == '(' | |
1528 | || **pp == '-') | |
1529 | { | |
1530 | if (read_type_number (pp, typenums) != 0) | |
1531 | return error_type (pp, objfile); | |
c5aa993b | 1532 | |
c906108c | 1533 | if (**pp != '=') |
8cfe231d JB |
1534 | { |
1535 | /* Type is not being defined here. Either it already | |
1536 | exists, or this is a forward reference to it. | |
1537 | dbx_alloc_type handles both cases. */ | |
1538 | type = dbx_alloc_type (typenums, objfile); | |
1539 | ||
1540 | /* If this is a forward reference, arrange to complain if it | |
1541 | doesn't get patched up by the time we're done | |
1542 | reading. */ | |
1543 | if (TYPE_CODE (type) == TYPE_CODE_UNDEF) | |
bf362611 | 1544 | add_undefined_type (type, typenums); |
8cfe231d JB |
1545 | |
1546 | return type; | |
1547 | } | |
c906108c SS |
1548 | |
1549 | /* Type is being defined here. */ | |
1550 | /* Skip the '='. | |
c5aa993b JM |
1551 | Also skip the type descriptor - we get it below with (*pp)[-1]. */ |
1552 | (*pp) += 2; | |
c906108c SS |
1553 | } |
1554 | else | |
1555 | { | |
1556 | /* 'typenums=' not present, type is anonymous. Read and return | |
c5aa993b | 1557 | the definition, but don't put it in the type vector. */ |
c906108c SS |
1558 | typenums[0] = typenums[1] = -1; |
1559 | (*pp)++; | |
1560 | } | |
1561 | ||
c5aa993b | 1562 | again: |
c906108c SS |
1563 | type_descriptor = (*pp)[-1]; |
1564 | switch (type_descriptor) | |
1565 | { | |
1566 | case 'x': | |
1567 | { | |
1568 | enum type_code code; | |
1569 | ||
1570 | /* Used to index through file_symbols. */ | |
1571 | struct pending *ppt; | |
1572 | int i; | |
c5aa993b | 1573 | |
c906108c SS |
1574 | /* Name including "struct", etc. */ |
1575 | char *type_name; | |
c5aa993b | 1576 | |
c906108c SS |
1577 | { |
1578 | char *from, *to, *p, *q1, *q2; | |
c5aa993b | 1579 | |
c906108c SS |
1580 | /* Set the type code according to the following letter. */ |
1581 | switch ((*pp)[0]) | |
1582 | { | |
1583 | case 's': | |
1584 | code = TYPE_CODE_STRUCT; | |
1585 | break; | |
1586 | case 'u': | |
1587 | code = TYPE_CODE_UNION; | |
1588 | break; | |
1589 | case 'e': | |
1590 | code = TYPE_CODE_ENUM; | |
1591 | break; | |
1592 | default: | |
1593 | { | |
1594 | /* Complain and keep going, so compilers can invent new | |
1595 | cross-reference types. */ | |
23136709 | 1596 | complaint (&symfile_complaints, |
3e43a32a MS |
1597 | _("Unrecognized cross-reference type `%c'"), |
1598 | (*pp)[0]); | |
c906108c SS |
1599 | code = TYPE_CODE_STRUCT; |
1600 | break; | |
1601 | } | |
1602 | } | |
c5aa993b | 1603 | |
c906108c SS |
1604 | q1 = strchr (*pp, '<'); |
1605 | p = strchr (*pp, ':'); | |
1606 | if (p == NULL) | |
1607 | return error_type (pp, objfile); | |
1608 | if (q1 && p > q1 && p[1] == ':') | |
1609 | { | |
1610 | int nesting_level = 0; | |
433759f7 | 1611 | |
c906108c SS |
1612 | for (q2 = q1; *q2; q2++) |
1613 | { | |
1614 | if (*q2 == '<') | |
1615 | nesting_level++; | |
1616 | else if (*q2 == '>') | |
1617 | nesting_level--; | |
1618 | else if (*q2 == ':' && nesting_level == 0) | |
1619 | break; | |
1620 | } | |
1621 | p = q2; | |
1622 | if (*p != ':') | |
1623 | return error_type (pp, objfile); | |
1624 | } | |
71c25dea TT |
1625 | type_name = NULL; |
1626 | if (current_subfile->language == language_cplus) | |
1627 | { | |
1628 | char *new_name, *name = alloca (p - *pp + 1); | |
433759f7 | 1629 | |
71c25dea TT |
1630 | memcpy (name, *pp, p - *pp); |
1631 | name[p - *pp] = '\0'; | |
1632 | new_name = cp_canonicalize_string (name); | |
1633 | if (new_name != NULL) | |
1634 | { | |
1635 | type_name = obsavestring (new_name, strlen (new_name), | |
1636 | &objfile->objfile_obstack); | |
1637 | xfree (new_name); | |
1638 | } | |
1639 | } | |
1640 | if (type_name == NULL) | |
1641 | { | |
3e43a32a MS |
1642 | to = type_name = (char *) |
1643 | obstack_alloc (&objfile->objfile_obstack, p - *pp + 1); | |
71c25dea TT |
1644 | |
1645 | /* Copy the name. */ | |
1646 | from = *pp + 1; | |
1647 | while (from < p) | |
1648 | *to++ = *from++; | |
1649 | *to = '\0'; | |
1650 | } | |
c5aa993b | 1651 | |
c906108c SS |
1652 | /* Set the pointer ahead of the name which we just read, and |
1653 | the colon. */ | |
71c25dea | 1654 | *pp = p + 1; |
c906108c SS |
1655 | } |
1656 | ||
149d821b JB |
1657 | /* If this type has already been declared, then reuse the same |
1658 | type, rather than allocating a new one. This saves some | |
1659 | memory. */ | |
c906108c SS |
1660 | |
1661 | for (ppt = file_symbols; ppt; ppt = ppt->next) | |
1662 | for (i = 0; i < ppt->nsyms; i++) | |
1663 | { | |
1664 | struct symbol *sym = ppt->symbol[i]; | |
1665 | ||
1666 | if (SYMBOL_CLASS (sym) == LOC_TYPEDEF | |
176620f1 | 1667 | && SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN |
c906108c | 1668 | && (TYPE_CODE (SYMBOL_TYPE (sym)) == code) |
3567439c | 1669 | && strcmp (SYMBOL_LINKAGE_NAME (sym), type_name) == 0) |
c906108c | 1670 | { |
b99607ea | 1671 | obstack_free (&objfile->objfile_obstack, type_name); |
c906108c | 1672 | type = SYMBOL_TYPE (sym); |
149d821b | 1673 | if (typenums[0] != -1) |
46bf5051 | 1674 | *dbx_lookup_type (typenums, objfile) = type; |
c906108c SS |
1675 | return type; |
1676 | } | |
1677 | } | |
1678 | ||
1679 | /* Didn't find the type to which this refers, so we must | |
1680 | be dealing with a forward reference. Allocate a type | |
1681 | structure for it, and keep track of it so we can | |
1682 | fill in the rest of the fields when we get the full | |
1683 | type. */ | |
1684 | type = dbx_alloc_type (typenums, objfile); | |
1685 | TYPE_CODE (type) = code; | |
1686 | TYPE_TAG_NAME (type) = type_name; | |
c5aa993b | 1687 | INIT_CPLUS_SPECIFIC (type); |
876cecd0 | 1688 | TYPE_STUB (type) = 1; |
c906108c | 1689 | |
bf362611 | 1690 | add_undefined_type (type, typenums); |
c906108c SS |
1691 | return type; |
1692 | } | |
1693 | ||
c5aa993b | 1694 | case '-': /* RS/6000 built-in type */ |
c906108c SS |
1695 | case '0': |
1696 | case '1': | |
1697 | case '2': | |
1698 | case '3': | |
1699 | case '4': | |
1700 | case '5': | |
1701 | case '6': | |
1702 | case '7': | |
1703 | case '8': | |
1704 | case '9': | |
1705 | case '(': | |
1706 | (*pp)--; | |
1707 | ||
1708 | /* We deal with something like t(1,2)=(3,4)=... which | |
c378eb4e | 1709 | the Lucid compiler and recent gcc versions (post 2.7.3) use. */ |
c906108c SS |
1710 | |
1711 | /* Allocate and enter the typedef type first. | |
c378eb4e | 1712 | This handles recursive types. */ |
c906108c SS |
1713 | type = dbx_alloc_type (typenums, objfile); |
1714 | TYPE_CODE (type) = TYPE_CODE_TYPEDEF; | |
c5aa993b JM |
1715 | { |
1716 | struct type *xtype = read_type (pp, objfile); | |
433759f7 | 1717 | |
c906108c SS |
1718 | if (type == xtype) |
1719 | { | |
1720 | /* It's being defined as itself. That means it is "void". */ | |
1721 | TYPE_CODE (type) = TYPE_CODE_VOID; | |
1722 | TYPE_LENGTH (type) = 1; | |
1723 | } | |
1724 | else if (type_size >= 0 || is_string) | |
1725 | { | |
dd6bda65 DJ |
1726 | /* This is the absolute wrong way to construct types. Every |
1727 | other debug format has found a way around this problem and | |
1728 | the related problems with unnecessarily stubbed types; | |
1729 | someone motivated should attempt to clean up the issue | |
1730 | here as well. Once a type pointed to has been created it | |
13a393b0 JB |
1731 | should not be modified. |
1732 | ||
1733 | Well, it's not *absolutely* wrong. Constructing recursive | |
1734 | types (trees, linked lists) necessarily entails modifying | |
1735 | types after creating them. Constructing any loop structure | |
1736 | entails side effects. The Dwarf 2 reader does handle this | |
1737 | more gracefully (it never constructs more than once | |
1738 | instance of a type object, so it doesn't have to copy type | |
1739 | objects wholesale), but it still mutates type objects after | |
1740 | other folks have references to them. | |
1741 | ||
1742 | Keep in mind that this circularity/mutation issue shows up | |
1743 | at the source language level, too: C's "incomplete types", | |
1744 | for example. So the proper cleanup, I think, would be to | |
1745 | limit GDB's type smashing to match exactly those required | |
1746 | by the source language. So GDB could have a | |
1747 | "complete_this_type" function, but never create unnecessary | |
1748 | copies of a type otherwise. */ | |
dd6bda65 | 1749 | replace_type (type, xtype); |
c906108c SS |
1750 | TYPE_NAME (type) = NULL; |
1751 | TYPE_TAG_NAME (type) = NULL; | |
1752 | } | |
1753 | else | |
1754 | { | |
876cecd0 | 1755 | TYPE_TARGET_STUB (type) = 1; |
c906108c SS |
1756 | TYPE_TARGET_TYPE (type) = xtype; |
1757 | } | |
1758 | } | |
1759 | break; | |
1760 | ||
c5aa993b JM |
1761 | /* In the following types, we must be sure to overwrite any existing |
1762 | type that the typenums refer to, rather than allocating a new one | |
1763 | and making the typenums point to the new one. This is because there | |
1764 | may already be pointers to the existing type (if it had been | |
1765 | forward-referenced), and we must change it to a pointer, function, | |
1766 | reference, or whatever, *in-place*. */ | |
c906108c | 1767 | |
e2cd42dd | 1768 | case '*': /* Pointer to another type */ |
c906108c | 1769 | type1 = read_type (pp, objfile); |
46bf5051 | 1770 | type = make_pointer_type (type1, dbx_lookup_type (typenums, objfile)); |
c906108c SS |
1771 | break; |
1772 | ||
c5aa993b | 1773 | case '&': /* Reference to another type */ |
c906108c | 1774 | type1 = read_type (pp, objfile); |
46bf5051 | 1775 | type = make_reference_type (type1, dbx_lookup_type (typenums, objfile)); |
c906108c SS |
1776 | break; |
1777 | ||
c5aa993b | 1778 | case 'f': /* Function returning another type */ |
c906108c | 1779 | type1 = read_type (pp, objfile); |
0c8b41f1 | 1780 | type = make_function_type (type1, dbx_lookup_type (typenums, objfile)); |
c906108c SS |
1781 | break; |
1782 | ||
da966255 JB |
1783 | case 'g': /* Prototyped function. (Sun) */ |
1784 | { | |
1785 | /* Unresolved questions: | |
1786 | ||
1787 | - According to Sun's ``STABS Interface Manual'', for 'f' | |
1788 | and 'F' symbol descriptors, a `0' in the argument type list | |
1789 | indicates a varargs function. But it doesn't say how 'g' | |
1790 | type descriptors represent that info. Someone with access | |
1791 | to Sun's toolchain should try it out. | |
1792 | ||
1793 | - According to the comment in define_symbol (search for | |
1794 | `process_prototype_types:'), Sun emits integer arguments as | |
1795 | types which ref themselves --- like `void' types. Do we | |
1796 | have to deal with that here, too? Again, someone with | |
1797 | access to Sun's toolchain should try it out and let us | |
1798 | know. */ | |
1799 | ||
1800 | const char *type_start = (*pp) - 1; | |
1801 | struct type *return_type = read_type (pp, objfile); | |
1802 | struct type *func_type | |
46bf5051 | 1803 | = make_function_type (return_type, |
0c8b41f1 | 1804 | dbx_lookup_type (typenums, objfile)); |
da966255 JB |
1805 | struct type_list { |
1806 | struct type *type; | |
1807 | struct type_list *next; | |
1808 | } *arg_types = 0; | |
1809 | int num_args = 0; | |
1810 | ||
1811 | while (**pp && **pp != '#') | |
1812 | { | |
1813 | struct type *arg_type = read_type (pp, objfile); | |
1814 | struct type_list *new = alloca (sizeof (*new)); | |
1815 | new->type = arg_type; | |
1816 | new->next = arg_types; | |
1817 | arg_types = new; | |
1818 | num_args++; | |
1819 | } | |
1820 | if (**pp == '#') | |
1821 | ++*pp; | |
1822 | else | |
1823 | { | |
23136709 | 1824 | complaint (&symfile_complaints, |
3e43a32a MS |
1825 | _("Prototyped function type didn't " |
1826 | "end arguments with `#':\n%s"), | |
23136709 | 1827 | type_start); |
da966255 JB |
1828 | } |
1829 | ||
1830 | /* If there is just one argument whose type is `void', then | |
1831 | that's just an empty argument list. */ | |
1832 | if (arg_types | |
1833 | && ! arg_types->next | |
1834 | && TYPE_CODE (arg_types->type) == TYPE_CODE_VOID) | |
1835 | num_args = 0; | |
1836 | ||
1837 | TYPE_FIELDS (func_type) | |
1838 | = (struct field *) TYPE_ALLOC (func_type, | |
1839 | num_args * sizeof (struct field)); | |
1840 | memset (TYPE_FIELDS (func_type), 0, num_args * sizeof (struct field)); | |
1841 | { | |
1842 | int i; | |
1843 | struct type_list *t; | |
1844 | ||
1845 | /* We stuck each argument type onto the front of the list | |
1846 | when we read it, so the list is reversed. Build the | |
1847 | fields array right-to-left. */ | |
1848 | for (t = arg_types, i = num_args - 1; t; t = t->next, i--) | |
1849 | TYPE_FIELD_TYPE (func_type, i) = t->type; | |
1850 | } | |
1851 | TYPE_NFIELDS (func_type) = num_args; | |
876cecd0 | 1852 | TYPE_PROTOTYPED (func_type) = 1; |
da966255 JB |
1853 | |
1854 | type = func_type; | |
1855 | break; | |
1856 | } | |
1857 | ||
c5aa993b | 1858 | case 'k': /* Const qualifier on some type (Sun) */ |
c906108c | 1859 | type = read_type (pp, objfile); |
d7242108 | 1860 | type = make_cv_type (1, TYPE_VOLATILE (type), type, |
46bf5051 | 1861 | dbx_lookup_type (typenums, objfile)); |
c906108c SS |
1862 | break; |
1863 | ||
c5aa993b | 1864 | case 'B': /* Volatile qual on some type (Sun) */ |
c906108c | 1865 | type = read_type (pp, objfile); |
d7242108 | 1866 | type = make_cv_type (TYPE_CONST (type), 1, type, |
46bf5051 | 1867 | dbx_lookup_type (typenums, objfile)); |
c906108c SS |
1868 | break; |
1869 | ||
1870 | case '@': | |
c5aa993b JM |
1871 | if (isdigit (**pp) || **pp == '(' || **pp == '-') |
1872 | { /* Member (class & variable) type */ | |
c906108c SS |
1873 | /* FIXME -- we should be doing smash_to_XXX types here. */ |
1874 | ||
1875 | struct type *domain = read_type (pp, objfile); | |
1876 | struct type *memtype; | |
1877 | ||
1878 | if (**pp != ',') | |
1879 | /* Invalid member type data format. */ | |
1880 | return error_type (pp, objfile); | |
1881 | ++*pp; | |
1882 | ||
1883 | memtype = read_type (pp, objfile); | |
1884 | type = dbx_alloc_type (typenums, objfile); | |
0d5de010 | 1885 | smash_to_memberptr_type (type, domain, memtype); |
c906108c | 1886 | } |
c5aa993b JM |
1887 | else |
1888 | /* type attribute */ | |
c906108c SS |
1889 | { |
1890 | char *attr = *pp; | |
433759f7 | 1891 | |
c906108c SS |
1892 | /* Skip to the semicolon. */ |
1893 | while (**pp != ';' && **pp != '\0') | |
1894 | ++(*pp); | |
1895 | if (**pp == '\0') | |
1896 | return error_type (pp, objfile); | |
1897 | else | |
c5aa993b | 1898 | ++ * pp; /* Skip the semicolon. */ |
c906108c SS |
1899 | |
1900 | switch (*attr) | |
1901 | { | |
e2cd42dd | 1902 | case 's': /* Size attribute */ |
c906108c SS |
1903 | type_size = atoi (attr + 1); |
1904 | if (type_size <= 0) | |
1905 | type_size = -1; | |
1906 | break; | |
1907 | ||
e2cd42dd | 1908 | case 'S': /* String attribute */ |
c378eb4e | 1909 | /* FIXME: check to see if following type is array? */ |
c906108c SS |
1910 | is_string = 1; |
1911 | break; | |
1912 | ||
e2cd42dd | 1913 | case 'V': /* Vector attribute */ |
c378eb4e | 1914 | /* FIXME: check to see if following type is array? */ |
e2cd42dd MS |
1915 | is_vector = 1; |
1916 | break; | |
1917 | ||
c906108c SS |
1918 | default: |
1919 | /* Ignore unrecognized type attributes, so future compilers | |
c5aa993b | 1920 | can invent new ones. */ |
c906108c SS |
1921 | break; |
1922 | } | |
1923 | ++*pp; | |
1924 | goto again; | |
1925 | } | |
1926 | break; | |
1927 | ||
c5aa993b | 1928 | case '#': /* Method (class & fn) type */ |
c906108c SS |
1929 | if ((*pp)[0] == '#') |
1930 | { | |
1931 | /* We'll get the parameter types from the name. */ | |
1932 | struct type *return_type; | |
1933 | ||
1934 | (*pp)++; | |
1935 | return_type = read_type (pp, objfile); | |
1936 | if (*(*pp)++ != ';') | |
23136709 | 1937 | complaint (&symfile_complaints, |
3e43a32a MS |
1938 | _("invalid (minimal) member type " |
1939 | "data format at symtab pos %d."), | |
23136709 | 1940 | symnum); |
c906108c SS |
1941 | type = allocate_stub_method (return_type); |
1942 | if (typenums[0] != -1) | |
46bf5051 | 1943 | *dbx_lookup_type (typenums, objfile) = type; |
c906108c SS |
1944 | } |
1945 | else | |
1946 | { | |
1947 | struct type *domain = read_type (pp, objfile); | |
1948 | struct type *return_type; | |
ad2f7632 DJ |
1949 | struct field *args; |
1950 | int nargs, varargs; | |
c906108c SS |
1951 | |
1952 | if (**pp != ',') | |
1953 | /* Invalid member type data format. */ | |
1954 | return error_type (pp, objfile); | |
1955 | else | |
1956 | ++(*pp); | |
1957 | ||
1958 | return_type = read_type (pp, objfile); | |
ad2f7632 | 1959 | args = read_args (pp, ';', objfile, &nargs, &varargs); |
0a029df5 DJ |
1960 | if (args == NULL) |
1961 | return error_type (pp, objfile); | |
c906108c | 1962 | type = dbx_alloc_type (typenums, objfile); |
ad2f7632 DJ |
1963 | smash_to_method_type (type, domain, return_type, args, |
1964 | nargs, varargs); | |
c906108c SS |
1965 | } |
1966 | break; | |
1967 | ||
c5aa993b | 1968 | case 'r': /* Range type */ |
94e10a22 | 1969 | type = read_range_type (pp, typenums, type_size, objfile); |
c906108c | 1970 | if (typenums[0] != -1) |
46bf5051 | 1971 | *dbx_lookup_type (typenums, objfile) = type; |
c906108c SS |
1972 | break; |
1973 | ||
1974 | case 'b': | |
c906108c SS |
1975 | { |
1976 | /* Sun ACC builtin int type */ | |
1977 | type = read_sun_builtin_type (pp, typenums, objfile); | |
1978 | if (typenums[0] != -1) | |
46bf5051 | 1979 | *dbx_lookup_type (typenums, objfile) = type; |
c906108c SS |
1980 | } |
1981 | break; | |
1982 | ||
c5aa993b | 1983 | case 'R': /* Sun ACC builtin float type */ |
c906108c SS |
1984 | type = read_sun_floating_type (pp, typenums, objfile); |
1985 | if (typenums[0] != -1) | |
46bf5051 | 1986 | *dbx_lookup_type (typenums, objfile) = type; |
c906108c | 1987 | break; |
c5aa993b JM |
1988 | |
1989 | case 'e': /* Enumeration type */ | |
c906108c SS |
1990 | type = dbx_alloc_type (typenums, objfile); |
1991 | type = read_enum_type (pp, type, objfile); | |
1992 | if (typenums[0] != -1) | |
46bf5051 | 1993 | *dbx_lookup_type (typenums, objfile) = type; |
c906108c SS |
1994 | break; |
1995 | ||
c5aa993b JM |
1996 | case 's': /* Struct type */ |
1997 | case 'u': /* Union type */ | |
2ae1c2d2 JB |
1998 | { |
1999 | enum type_code type_code = TYPE_CODE_UNDEF; | |
2000 | type = dbx_alloc_type (typenums, objfile); | |
2001 | switch (type_descriptor) | |
2002 | { | |
2003 | case 's': | |
2004 | type_code = TYPE_CODE_STRUCT; | |
2005 | break; | |
2006 | case 'u': | |
2007 | type_code = TYPE_CODE_UNION; | |
2008 | break; | |
2009 | } | |
2010 | type = read_struct_type (pp, type, type_code, objfile); | |
2011 | break; | |
2012 | } | |
c906108c | 2013 | |
c5aa993b | 2014 | case 'a': /* Array type */ |
c906108c SS |
2015 | if (**pp != 'r') |
2016 | return error_type (pp, objfile); | |
2017 | ++*pp; | |
c5aa993b | 2018 | |
c906108c SS |
2019 | type = dbx_alloc_type (typenums, objfile); |
2020 | type = read_array_type (pp, type, objfile); | |
2021 | if (is_string) | |
2022 | TYPE_CODE (type) = TYPE_CODE_STRING; | |
e2cd42dd | 2023 | if (is_vector) |
ea37ba09 | 2024 | make_vector_type (type); |
c906108c SS |
2025 | break; |
2026 | ||
6b1755ce | 2027 | case 'S': /* Set type */ |
c906108c | 2028 | type1 = read_type (pp, objfile); |
c5aa993b | 2029 | type = create_set_type ((struct type *) NULL, type1); |
c906108c | 2030 | if (typenums[0] != -1) |
46bf5051 | 2031 | *dbx_lookup_type (typenums, objfile) = type; |
c906108c SS |
2032 | break; |
2033 | ||
2034 | default: | |
c378eb4e MS |
2035 | --*pp; /* Go back to the symbol in error. */ |
2036 | /* Particularly important if it was \0! */ | |
c906108c SS |
2037 | return error_type (pp, objfile); |
2038 | } | |
2039 | ||
2040 | if (type == 0) | |
2041 | { | |
8a3fe4f8 | 2042 | warning (_("GDB internal error, type is NULL in stabsread.c.")); |
c906108c SS |
2043 | return error_type (pp, objfile); |
2044 | } | |
2045 | ||
2046 | /* Size specified in a type attribute overrides any other size. */ | |
2047 | if (type_size != -1) | |
2048 | TYPE_LENGTH (type) = (type_size + TARGET_CHAR_BIT - 1) / TARGET_CHAR_BIT; | |
2049 | ||
2050 | return type; | |
2051 | } | |
2052 | \f | |
2053 | /* RS/6000 xlc/dbx combination uses a set of builtin types, starting from -1. | |
c378eb4e | 2054 | Return the proper type node for a given builtin type number. */ |
c906108c | 2055 | |
46bf5051 UW |
2056 | static const struct objfile_data *rs6000_builtin_type_data; |
2057 | ||
c906108c | 2058 | static struct type * |
46bf5051 | 2059 | rs6000_builtin_type (int typenum, struct objfile *objfile) |
c906108c | 2060 | { |
3e43a32a MS |
2061 | struct type **negative_types = objfile_data (objfile, |
2062 | rs6000_builtin_type_data); | |
46bf5051 | 2063 | |
c906108c SS |
2064 | /* We recognize types numbered from -NUMBER_RECOGNIZED to -1. */ |
2065 | #define NUMBER_RECOGNIZED 34 | |
c906108c SS |
2066 | struct type *rettype = NULL; |
2067 | ||
2068 | if (typenum >= 0 || typenum < -NUMBER_RECOGNIZED) | |
2069 | { | |
e2e0b3e5 | 2070 | complaint (&symfile_complaints, _("Unknown builtin type %d"), typenum); |
46bf5051 | 2071 | return objfile_type (objfile)->builtin_error; |
c906108c | 2072 | } |
46bf5051 UW |
2073 | |
2074 | if (!negative_types) | |
2075 | { | |
2076 | /* This includes an empty slot for type number -0. */ | |
2077 | negative_types = OBSTACK_CALLOC (&objfile->objfile_obstack, | |
2078 | NUMBER_RECOGNIZED + 1, struct type *); | |
2079 | set_objfile_data (objfile, rs6000_builtin_type_data, negative_types); | |
2080 | } | |
2081 | ||
c906108c SS |
2082 | if (negative_types[-typenum] != NULL) |
2083 | return negative_types[-typenum]; | |
2084 | ||
2085 | #if TARGET_CHAR_BIT != 8 | |
c5aa993b | 2086 | #error This code wrong for TARGET_CHAR_BIT not 8 |
c906108c SS |
2087 | /* These definitions all assume that TARGET_CHAR_BIT is 8. I think |
2088 | that if that ever becomes not true, the correct fix will be to | |
2089 | make the size in the struct type to be in bits, not in units of | |
2090 | TARGET_CHAR_BIT. */ | |
2091 | #endif | |
2092 | ||
2093 | switch (-typenum) | |
2094 | { | |
2095 | case 1: | |
2096 | /* The size of this and all the other types are fixed, defined | |
c5aa993b JM |
2097 | by the debugging format. If there is a type called "int" which |
2098 | is other than 32 bits, then it should use a new negative type | |
2099 | number (or avoid negative type numbers for that case). | |
2100 | See stabs.texinfo. */ | |
46bf5051 | 2101 | rettype = init_type (TYPE_CODE_INT, 4, 0, "int", objfile); |
c906108c SS |
2102 | break; |
2103 | case 2: | |
46bf5051 | 2104 | rettype = init_type (TYPE_CODE_INT, 1, 0, "char", objfile); |
c906108c SS |
2105 | break; |
2106 | case 3: | |
46bf5051 | 2107 | rettype = init_type (TYPE_CODE_INT, 2, 0, "short", objfile); |
c906108c SS |
2108 | break; |
2109 | case 4: | |
46bf5051 | 2110 | rettype = init_type (TYPE_CODE_INT, 4, 0, "long", objfile); |
c906108c SS |
2111 | break; |
2112 | case 5: | |
2113 | rettype = init_type (TYPE_CODE_INT, 1, TYPE_FLAG_UNSIGNED, | |
46bf5051 | 2114 | "unsigned char", objfile); |
c906108c SS |
2115 | break; |
2116 | case 6: | |
46bf5051 | 2117 | rettype = init_type (TYPE_CODE_INT, 1, 0, "signed char", objfile); |
c906108c SS |
2118 | break; |
2119 | case 7: | |
2120 | rettype = init_type (TYPE_CODE_INT, 2, TYPE_FLAG_UNSIGNED, | |
46bf5051 | 2121 | "unsigned short", objfile); |
c906108c SS |
2122 | break; |
2123 | case 8: | |
2124 | rettype = init_type (TYPE_CODE_INT, 4, TYPE_FLAG_UNSIGNED, | |
46bf5051 | 2125 | "unsigned int", objfile); |
c906108c SS |
2126 | break; |
2127 | case 9: | |
2128 | rettype = init_type (TYPE_CODE_INT, 4, TYPE_FLAG_UNSIGNED, | |
46bf5051 | 2129 | "unsigned", objfile); |
89acf84d | 2130 | break; |
c906108c SS |
2131 | case 10: |
2132 | rettype = init_type (TYPE_CODE_INT, 4, TYPE_FLAG_UNSIGNED, | |
46bf5051 | 2133 | "unsigned long", objfile); |
c906108c SS |
2134 | break; |
2135 | case 11: | |
46bf5051 | 2136 | rettype = init_type (TYPE_CODE_VOID, 1, 0, "void", objfile); |
c906108c SS |
2137 | break; |
2138 | case 12: | |
2139 | /* IEEE single precision (32 bit). */ | |
46bf5051 | 2140 | rettype = init_type (TYPE_CODE_FLT, 4, 0, "float", objfile); |
c906108c SS |
2141 | break; |
2142 | case 13: | |
2143 | /* IEEE double precision (64 bit). */ | |
46bf5051 | 2144 | rettype = init_type (TYPE_CODE_FLT, 8, 0, "double", objfile); |
c906108c SS |
2145 | break; |
2146 | case 14: | |
2147 | /* This is an IEEE double on the RS/6000, and different machines with | |
c5aa993b JM |
2148 | different sizes for "long double" should use different negative |
2149 | type numbers. See stabs.texinfo. */ | |
46bf5051 | 2150 | rettype = init_type (TYPE_CODE_FLT, 8, 0, "long double", objfile); |
c906108c SS |
2151 | break; |
2152 | case 15: | |
46bf5051 | 2153 | rettype = init_type (TYPE_CODE_INT, 4, 0, "integer", objfile); |
c906108c SS |
2154 | break; |
2155 | case 16: | |
2156 | rettype = init_type (TYPE_CODE_BOOL, 4, TYPE_FLAG_UNSIGNED, | |
46bf5051 | 2157 | "boolean", objfile); |
c906108c SS |
2158 | break; |
2159 | case 17: | |
46bf5051 | 2160 | rettype = init_type (TYPE_CODE_FLT, 4, 0, "short real", objfile); |
c906108c SS |
2161 | break; |
2162 | case 18: | |
46bf5051 | 2163 | rettype = init_type (TYPE_CODE_FLT, 8, 0, "real", objfile); |
c906108c SS |
2164 | break; |
2165 | case 19: | |
46bf5051 | 2166 | rettype = init_type (TYPE_CODE_ERROR, 0, 0, "stringptr", objfile); |
c906108c SS |
2167 | break; |
2168 | case 20: | |
2169 | rettype = init_type (TYPE_CODE_CHAR, 1, TYPE_FLAG_UNSIGNED, | |
46bf5051 | 2170 | "character", objfile); |
c906108c SS |
2171 | break; |
2172 | case 21: | |
2173 | rettype = init_type (TYPE_CODE_BOOL, 1, TYPE_FLAG_UNSIGNED, | |
46bf5051 | 2174 | "logical*1", objfile); |
c906108c SS |
2175 | break; |
2176 | case 22: | |
2177 | rettype = init_type (TYPE_CODE_BOOL, 2, TYPE_FLAG_UNSIGNED, | |
46bf5051 | 2178 | "logical*2", objfile); |
c906108c SS |
2179 | break; |
2180 | case 23: | |
2181 | rettype = init_type (TYPE_CODE_BOOL, 4, TYPE_FLAG_UNSIGNED, | |
46bf5051 | 2182 | "logical*4", objfile); |
c906108c SS |
2183 | break; |
2184 | case 24: | |
2185 | rettype = init_type (TYPE_CODE_BOOL, 4, TYPE_FLAG_UNSIGNED, | |
46bf5051 | 2186 | "logical", objfile); |
c906108c SS |
2187 | break; |
2188 | case 25: | |
2189 | /* Complex type consisting of two IEEE single precision values. */ | |
46bf5051 | 2190 | rettype = init_type (TYPE_CODE_COMPLEX, 8, 0, "complex", objfile); |
f65ca430 | 2191 | TYPE_TARGET_TYPE (rettype) = init_type (TYPE_CODE_FLT, 4, 0, "float", |
46bf5051 | 2192 | objfile); |
c906108c SS |
2193 | break; |
2194 | case 26: | |
2195 | /* Complex type consisting of two IEEE double precision values. */ | |
2196 | rettype = init_type (TYPE_CODE_COMPLEX, 16, 0, "double complex", NULL); | |
f65ca430 | 2197 | TYPE_TARGET_TYPE (rettype) = init_type (TYPE_CODE_FLT, 8, 0, "double", |
46bf5051 | 2198 | objfile); |
c906108c SS |
2199 | break; |
2200 | case 27: | |
46bf5051 | 2201 | rettype = init_type (TYPE_CODE_INT, 1, 0, "integer*1", objfile); |
c906108c SS |
2202 | break; |
2203 | case 28: | |
46bf5051 | 2204 | rettype = init_type (TYPE_CODE_INT, 2, 0, "integer*2", objfile); |
c906108c SS |
2205 | break; |
2206 | case 29: | |
46bf5051 | 2207 | rettype = init_type (TYPE_CODE_INT, 4, 0, "integer*4", objfile); |
c906108c SS |
2208 | break; |
2209 | case 30: | |
46bf5051 | 2210 | rettype = init_type (TYPE_CODE_CHAR, 2, 0, "wchar", objfile); |
c906108c SS |
2211 | break; |
2212 | case 31: | |
46bf5051 | 2213 | rettype = init_type (TYPE_CODE_INT, 8, 0, "long long", objfile); |
c906108c SS |
2214 | break; |
2215 | case 32: | |
2216 | rettype = init_type (TYPE_CODE_INT, 8, TYPE_FLAG_UNSIGNED, | |
46bf5051 | 2217 | "unsigned long long", objfile); |
c906108c SS |
2218 | break; |
2219 | case 33: | |
2220 | rettype = init_type (TYPE_CODE_INT, 8, TYPE_FLAG_UNSIGNED, | |
46bf5051 | 2221 | "logical*8", objfile); |
c906108c SS |
2222 | break; |
2223 | case 34: | |
46bf5051 | 2224 | rettype = init_type (TYPE_CODE_INT, 8, 0, "integer*8", objfile); |
c906108c SS |
2225 | break; |
2226 | } | |
2227 | negative_types[-typenum] = rettype; | |
2228 | return rettype; | |
2229 | } | |
2230 | \f | |
2231 | /* This page contains subroutines of read_type. */ | |
2232 | ||
0d5cff50 DE |
2233 | /* Wrapper around method_name_from_physname to flag a complaint |
2234 | if there is an error. */ | |
de17c821 | 2235 | |
0d5cff50 DE |
2236 | static char * |
2237 | stabs_method_name_from_physname (const char *physname) | |
de17c821 DJ |
2238 | { |
2239 | char *method_name; | |
2240 | ||
2241 | method_name = method_name_from_physname (physname); | |
2242 | ||
2243 | if (method_name == NULL) | |
c263362b DJ |
2244 | { |
2245 | complaint (&symfile_complaints, | |
e2e0b3e5 | 2246 | _("Method has bad physname %s\n"), physname); |
0d5cff50 | 2247 | return NULL; |
c263362b | 2248 | } |
de17c821 | 2249 | |
0d5cff50 | 2250 | return method_name; |
de17c821 DJ |
2251 | } |
2252 | ||
c906108c SS |
2253 | /* Read member function stabs info for C++ classes. The form of each member |
2254 | function data is: | |
2255 | ||
c5aa993b | 2256 | NAME :: TYPENUM[=type definition] ARGS : PHYSNAME ; |
c906108c SS |
2257 | |
2258 | An example with two member functions is: | |
2259 | ||
c5aa993b | 2260 | afunc1::20=##15;:i;2A.;afunc2::20:i;2A.; |
c906108c SS |
2261 | |
2262 | For the case of overloaded operators, the format is op$::*.funcs, where | |
2263 | $ is the CPLUS_MARKER (usually '$'), `*' holds the place for an operator | |
2264 | name (such as `+=') and `.' marks the end of the operator name. | |
2265 | ||
2266 | Returns 1 for success, 0 for failure. */ | |
2267 | ||
2268 | static int | |
fba45db2 KB |
2269 | read_member_functions (struct field_info *fip, char **pp, struct type *type, |
2270 | struct objfile *objfile) | |
c906108c SS |
2271 | { |
2272 | int nfn_fields = 0; | |
2273 | int length = 0; | |
c906108c SS |
2274 | int i; |
2275 | struct next_fnfield | |
2276 | { | |
2277 | struct next_fnfield *next; | |
2278 | struct fn_field fn_field; | |
c5aa993b JM |
2279 | } |
2280 | *sublist; | |
c906108c SS |
2281 | struct type *look_ahead_type; |
2282 | struct next_fnfieldlist *new_fnlist; | |
2283 | struct next_fnfield *new_sublist; | |
2284 | char *main_fn_name; | |
52f0bd74 | 2285 | char *p; |
c5aa993b | 2286 | |
c906108c | 2287 | /* Process each list until we find something that is not a member function |
c378eb4e | 2288 | or find the end of the functions. */ |
c906108c SS |
2289 | |
2290 | while (**pp != ';') | |
2291 | { | |
2292 | /* We should be positioned at the start of the function name. | |
c5aa993b | 2293 | Scan forward to find the first ':' and if it is not the |
c378eb4e | 2294 | first of a "::" delimiter, then this is not a member function. */ |
c906108c SS |
2295 | p = *pp; |
2296 | while (*p != ':') | |
2297 | { | |
2298 | p++; | |
2299 | } | |
2300 | if (p[1] != ':') | |
2301 | { | |
2302 | break; | |
2303 | } | |
2304 | ||
2305 | sublist = NULL; | |
2306 | look_ahead_type = NULL; | |
2307 | length = 0; | |
c5aa993b | 2308 | |
c906108c SS |
2309 | new_fnlist = (struct next_fnfieldlist *) |
2310 | xmalloc (sizeof (struct next_fnfieldlist)); | |
b8c9b27d | 2311 | make_cleanup (xfree, new_fnlist); |
c906108c | 2312 | memset (new_fnlist, 0, sizeof (struct next_fnfieldlist)); |
c5aa993b | 2313 | |
c906108c SS |
2314 | if ((*pp)[0] == 'o' && (*pp)[1] == 'p' && is_cplus_marker ((*pp)[2])) |
2315 | { | |
2316 | /* This is a completely wierd case. In order to stuff in the | |
2317 | names that might contain colons (the usual name delimiter), | |
2318 | Mike Tiemann defined a different name format which is | |
2319 | signalled if the identifier is "op$". In that case, the | |
2320 | format is "op$::XXXX." where XXXX is the name. This is | |
2321 | used for names like "+" or "=". YUUUUUUUK! FIXME! */ | |
2322 | /* This lets the user type "break operator+". | |
2323 | We could just put in "+" as the name, but that wouldn't | |
2324 | work for "*". */ | |
8343f86c | 2325 | static char opname[32] = "op$"; |
c906108c | 2326 | char *o = opname + 3; |
c5aa993b | 2327 | |
c906108c SS |
2328 | /* Skip past '::'. */ |
2329 | *pp = p + 2; | |
2330 | ||
2331 | STABS_CONTINUE (pp, objfile); | |
2332 | p = *pp; | |
2333 | while (*p != '.') | |
2334 | { | |
2335 | *o++ = *p++; | |
2336 | } | |
2337 | main_fn_name = savestring (opname, o - opname); | |
2338 | /* Skip past '.' */ | |
2339 | *pp = p + 1; | |
2340 | } | |
2341 | else | |
2342 | { | |
2343 | main_fn_name = savestring (*pp, p - *pp); | |
2344 | /* Skip past '::'. */ | |
2345 | *pp = p + 2; | |
2346 | } | |
c5aa993b JM |
2347 | new_fnlist->fn_fieldlist.name = main_fn_name; |
2348 | ||
c906108c SS |
2349 | do |
2350 | { | |
2351 | new_sublist = | |
2352 | (struct next_fnfield *) xmalloc (sizeof (struct next_fnfield)); | |
b8c9b27d | 2353 | make_cleanup (xfree, new_sublist); |
c906108c | 2354 | memset (new_sublist, 0, sizeof (struct next_fnfield)); |
c5aa993b | 2355 | |
c906108c SS |
2356 | /* Check for and handle cretinous dbx symbol name continuation! */ |
2357 | if (look_ahead_type == NULL) | |
2358 | { | |
c378eb4e | 2359 | /* Normal case. */ |
c906108c | 2360 | STABS_CONTINUE (pp, objfile); |
c5aa993b JM |
2361 | |
2362 | new_sublist->fn_field.type = read_type (pp, objfile); | |
c906108c SS |
2363 | if (**pp != ':') |
2364 | { | |
2365 | /* Invalid symtab info for member function. */ | |
2366 | return 0; | |
2367 | } | |
2368 | } | |
2369 | else | |
2370 | { | |
2371 | /* g++ version 1 kludge */ | |
c5aa993b | 2372 | new_sublist->fn_field.type = look_ahead_type; |
c906108c SS |
2373 | look_ahead_type = NULL; |
2374 | } | |
c5aa993b | 2375 | |
c906108c SS |
2376 | (*pp)++; |
2377 | p = *pp; | |
2378 | while (*p != ';') | |
2379 | { | |
2380 | p++; | |
2381 | } | |
c5aa993b | 2382 | |
c378eb4e | 2383 | /* If this is just a stub, then we don't have the real name here. */ |
c906108c | 2384 | |
74a9bb82 | 2385 | if (TYPE_STUB (new_sublist->fn_field.type)) |
c906108c | 2386 | { |
c5aa993b JM |
2387 | if (!TYPE_DOMAIN_TYPE (new_sublist->fn_field.type)) |
2388 | TYPE_DOMAIN_TYPE (new_sublist->fn_field.type) = type; | |
2389 | new_sublist->fn_field.is_stub = 1; | |
c906108c | 2390 | } |
c5aa993b | 2391 | new_sublist->fn_field.physname = savestring (*pp, p - *pp); |
c906108c | 2392 | *pp = p + 1; |
c5aa993b | 2393 | |
c906108c SS |
2394 | /* Set this member function's visibility fields. */ |
2395 | switch (*(*pp)++) | |
2396 | { | |
c5aa993b JM |
2397 | case VISIBILITY_PRIVATE: |
2398 | new_sublist->fn_field.is_private = 1; | |
2399 | break; | |
2400 | case VISIBILITY_PROTECTED: | |
2401 | new_sublist->fn_field.is_protected = 1; | |
2402 | break; | |
c906108c | 2403 | } |
c5aa993b | 2404 | |
c906108c SS |
2405 | STABS_CONTINUE (pp, objfile); |
2406 | switch (**pp) | |
2407 | { | |
c378eb4e | 2408 | case 'A': /* Normal functions. */ |
c5aa993b JM |
2409 | new_sublist->fn_field.is_const = 0; |
2410 | new_sublist->fn_field.is_volatile = 0; | |
2411 | (*pp)++; | |
2412 | break; | |
c378eb4e | 2413 | case 'B': /* `const' member functions. */ |
c5aa993b JM |
2414 | new_sublist->fn_field.is_const = 1; |
2415 | new_sublist->fn_field.is_volatile = 0; | |
2416 | (*pp)++; | |
2417 | break; | |
c378eb4e | 2418 | case 'C': /* `volatile' member function. */ |
c5aa993b JM |
2419 | new_sublist->fn_field.is_const = 0; |
2420 | new_sublist->fn_field.is_volatile = 1; | |
2421 | (*pp)++; | |
2422 | break; | |
c378eb4e | 2423 | case 'D': /* `const volatile' member function. */ |
c5aa993b JM |
2424 | new_sublist->fn_field.is_const = 1; |
2425 | new_sublist->fn_field.is_volatile = 1; | |
2426 | (*pp)++; | |
2427 | break; | |
3e43a32a | 2428 | case '*': /* File compiled with g++ version 1 -- |
c378eb4e | 2429 | no info. */ |
c5aa993b JM |
2430 | case '?': |
2431 | case '.': | |
2432 | break; | |
2433 | default: | |
23136709 | 2434 | complaint (&symfile_complaints, |
3e43a32a MS |
2435 | _("const/volatile indicator missing, got '%c'"), |
2436 | **pp); | |
c5aa993b | 2437 | break; |
c906108c | 2438 | } |
c5aa993b | 2439 | |
c906108c SS |
2440 | switch (*(*pp)++) |
2441 | { | |
c5aa993b | 2442 | case '*': |
c906108c SS |
2443 | { |
2444 | int nbits; | |
c5aa993b | 2445 | /* virtual member function, followed by index. |
c906108c SS |
2446 | The sign bit is set to distinguish pointers-to-methods |
2447 | from virtual function indicies. Since the array is | |
2448 | in words, the quantity must be shifted left by 1 | |
2449 | on 16 bit machine, and by 2 on 32 bit machine, forcing | |
2450 | the sign bit out, and usable as a valid index into | |
2451 | the array. Remove the sign bit here. */ | |
c5aa993b | 2452 | new_sublist->fn_field.voffset = |
94e10a22 | 2453 | (0x7fffffff & read_huge_number (pp, ';', &nbits, 0)) + 2; |
c906108c SS |
2454 | if (nbits != 0) |
2455 | return 0; | |
c5aa993b | 2456 | |
c906108c SS |
2457 | STABS_CONTINUE (pp, objfile); |
2458 | if (**pp == ';' || **pp == '\0') | |
2459 | { | |
2460 | /* Must be g++ version 1. */ | |
c5aa993b | 2461 | new_sublist->fn_field.fcontext = 0; |
c906108c SS |
2462 | } |
2463 | else | |
2464 | { | |
2465 | /* Figure out from whence this virtual function came. | |
2466 | It may belong to virtual function table of | |
2467 | one of its baseclasses. */ | |
2468 | look_ahead_type = read_type (pp, objfile); | |
2469 | if (**pp == ':') | |
2470 | { | |
c378eb4e | 2471 | /* g++ version 1 overloaded methods. */ |
c906108c SS |
2472 | } |
2473 | else | |
2474 | { | |
c5aa993b | 2475 | new_sublist->fn_field.fcontext = look_ahead_type; |
c906108c SS |
2476 | if (**pp != ';') |
2477 | { | |
2478 | return 0; | |
2479 | } | |
2480 | else | |
2481 | { | |
2482 | ++*pp; | |
2483 | } | |
2484 | look_ahead_type = NULL; | |
2485 | } | |
2486 | } | |
2487 | break; | |
2488 | } | |
c5aa993b JM |
2489 | case '?': |
2490 | /* static member function. */ | |
4ea09c10 PS |
2491 | { |
2492 | int slen = strlen (main_fn_name); | |
2493 | ||
2494 | new_sublist->fn_field.voffset = VOFFSET_STATIC; | |
2495 | ||
2496 | /* For static member functions, we can't tell if they | |
2497 | are stubbed, as they are put out as functions, and not as | |
2498 | methods. | |
2499 | GCC v2 emits the fully mangled name if | |
2500 | dbxout.c:flag_minimal_debug is not set, so we have to | |
2501 | detect a fully mangled physname here and set is_stub | |
2502 | accordingly. Fully mangled physnames in v2 start with | |
2503 | the member function name, followed by two underscores. | |
2504 | GCC v3 currently always emits stubbed member functions, | |
2505 | but with fully mangled physnames, which start with _Z. */ | |
2506 | if (!(strncmp (new_sublist->fn_field.physname, | |
2507 | main_fn_name, slen) == 0 | |
2508 | && new_sublist->fn_field.physname[slen] == '_' | |
2509 | && new_sublist->fn_field.physname[slen + 1] == '_')) | |
2510 | { | |
2511 | new_sublist->fn_field.is_stub = 1; | |
2512 | } | |
2513 | break; | |
2514 | } | |
c5aa993b JM |
2515 | |
2516 | default: | |
2517 | /* error */ | |
23136709 | 2518 | complaint (&symfile_complaints, |
3e43a32a MS |
2519 | _("member function type missing, got '%c'"), |
2520 | (*pp)[-1]); | |
c5aa993b JM |
2521 | /* Fall through into normal member function. */ |
2522 | ||
2523 | case '.': | |
2524 | /* normal member function. */ | |
2525 | new_sublist->fn_field.voffset = 0; | |
2526 | new_sublist->fn_field.fcontext = 0; | |
2527 | break; | |
c906108c | 2528 | } |
c5aa993b JM |
2529 | |
2530 | new_sublist->next = sublist; | |
c906108c SS |
2531 | sublist = new_sublist; |
2532 | length++; | |
2533 | STABS_CONTINUE (pp, objfile); | |
2534 | } | |
2535 | while (**pp != ';' && **pp != '\0'); | |
c5aa993b | 2536 | |
c906108c | 2537 | (*pp)++; |
0c867556 | 2538 | STABS_CONTINUE (pp, objfile); |
c5aa993b | 2539 | |
0c867556 PS |
2540 | /* Skip GCC 3.X member functions which are duplicates of the callable |
2541 | constructor/destructor. */ | |
6cbbcdfe KS |
2542 | if (strcmp_iw (main_fn_name, "__base_ctor ") == 0 |
2543 | || strcmp_iw (main_fn_name, "__base_dtor ") == 0 | |
0c867556 | 2544 | || strcmp (main_fn_name, "__deleting_dtor") == 0) |
c906108c | 2545 | { |
0c867556 | 2546 | xfree (main_fn_name); |
c906108c | 2547 | } |
0c867556 PS |
2548 | else |
2549 | { | |
de17c821 DJ |
2550 | int has_stub = 0; |
2551 | int has_destructor = 0, has_other = 0; | |
2552 | int is_v3 = 0; | |
2553 | struct next_fnfield *tmp_sublist; | |
2554 | ||
2555 | /* Various versions of GCC emit various mostly-useless | |
2556 | strings in the name field for special member functions. | |
2557 | ||
2558 | For stub methods, we need to defer correcting the name | |
2559 | until we are ready to unstub the method, because the current | |
2560 | name string is used by gdb_mangle_name. The only stub methods | |
2561 | of concern here are GNU v2 operators; other methods have their | |
2562 | names correct (see caveat below). | |
2563 | ||
2564 | For non-stub methods, in GNU v3, we have a complete physname. | |
2565 | Therefore we can safely correct the name now. This primarily | |
2566 | affects constructors and destructors, whose name will be | |
2567 | __comp_ctor or __comp_dtor instead of Foo or ~Foo. Cast | |
2568 | operators will also have incorrect names; for instance, | |
2569 | "operator int" will be named "operator i" (i.e. the type is | |
2570 | mangled). | |
2571 | ||
2572 | For non-stub methods in GNU v2, we have no easy way to | |
2573 | know if we have a complete physname or not. For most | |
2574 | methods the result depends on the platform (if CPLUS_MARKER | |
2575 | can be `$' or `.', it will use minimal debug information, or | |
2576 | otherwise the full physname will be included). | |
2577 | ||
2578 | Rather than dealing with this, we take a different approach. | |
2579 | For v3 mangled names, we can use the full physname; for v2, | |
2580 | we use cplus_demangle_opname (which is actually v2 specific), | |
2581 | because the only interesting names are all operators - once again | |
2582 | barring the caveat below. Skip this process if any method in the | |
2583 | group is a stub, to prevent our fouling up the workings of | |
2584 | gdb_mangle_name. | |
2585 | ||
2586 | The caveat: GCC 2.95.x (and earlier?) put constructors and | |
2587 | destructors in the same method group. We need to split this | |
2588 | into two groups, because they should have different names. | |
2589 | So for each method group we check whether it contains both | |
2590 | routines whose physname appears to be a destructor (the physnames | |
2591 | for and destructors are always provided, due to quirks in v2 | |
2592 | mangling) and routines whose physname does not appear to be a | |
2593 | destructor. If so then we break up the list into two halves. | |
2594 | Even if the constructors and destructors aren't in the same group | |
2595 | the destructor will still lack the leading tilde, so that also | |
2596 | needs to be fixed. | |
2597 | ||
2598 | So, to summarize what we expect and handle here: | |
2599 | ||
2600 | Given Given Real Real Action | |
2601 | method name physname physname method name | |
2602 | ||
2603 | __opi [none] __opi__3Foo operator int opname | |
3e43a32a MS |
2604 | [now or later] |
2605 | Foo _._3Foo _._3Foo ~Foo separate and | |
de17c821 DJ |
2606 | rename |
2607 | operator i _ZN3FoocviEv _ZN3FoocviEv operator int demangle | |
2608 | __comp_ctor _ZN3FooC1ERKS_ _ZN3FooC1ERKS_ Foo demangle | |
2609 | */ | |
2610 | ||
2611 | tmp_sublist = sublist; | |
2612 | while (tmp_sublist != NULL) | |
2613 | { | |
2614 | if (tmp_sublist->fn_field.is_stub) | |
2615 | has_stub = 1; | |
2616 | if (tmp_sublist->fn_field.physname[0] == '_' | |
2617 | && tmp_sublist->fn_field.physname[1] == 'Z') | |
2618 | is_v3 = 1; | |
2619 | ||
2620 | if (is_destructor_name (tmp_sublist->fn_field.physname)) | |
2621 | has_destructor++; | |
2622 | else | |
2623 | has_other++; | |
2624 | ||
2625 | tmp_sublist = tmp_sublist->next; | |
2626 | } | |
2627 | ||
2628 | if (has_destructor && has_other) | |
2629 | { | |
2630 | struct next_fnfieldlist *destr_fnlist; | |
2631 | struct next_fnfield *last_sublist; | |
2632 | ||
2633 | /* Create a new fn_fieldlist for the destructors. */ | |
2634 | ||
2635 | destr_fnlist = (struct next_fnfieldlist *) | |
2636 | xmalloc (sizeof (struct next_fnfieldlist)); | |
2637 | make_cleanup (xfree, destr_fnlist); | |
2638 | memset (destr_fnlist, 0, sizeof (struct next_fnfieldlist)); | |
2639 | destr_fnlist->fn_fieldlist.name | |
48cb83fd JK |
2640 | = obconcat (&objfile->objfile_obstack, "~", |
2641 | new_fnlist->fn_fieldlist.name, (char *) NULL); | |
de17c821 DJ |
2642 | |
2643 | destr_fnlist->fn_fieldlist.fn_fields = (struct fn_field *) | |
b99607ea | 2644 | obstack_alloc (&objfile->objfile_obstack, |
de17c821 DJ |
2645 | sizeof (struct fn_field) * has_destructor); |
2646 | memset (destr_fnlist->fn_fieldlist.fn_fields, 0, | |
2647 | sizeof (struct fn_field) * has_destructor); | |
2648 | tmp_sublist = sublist; | |
2649 | last_sublist = NULL; | |
2650 | i = 0; | |
2651 | while (tmp_sublist != NULL) | |
2652 | { | |
2653 | if (!is_destructor_name (tmp_sublist->fn_field.physname)) | |
2654 | { | |
2655 | tmp_sublist = tmp_sublist->next; | |
2656 | continue; | |
2657 | } | |
2658 | ||
2659 | destr_fnlist->fn_fieldlist.fn_fields[i++] | |
2660 | = tmp_sublist->fn_field; | |
2661 | if (last_sublist) | |
2662 | last_sublist->next = tmp_sublist->next; | |
2663 | else | |
2664 | sublist = tmp_sublist->next; | |
2665 | last_sublist = tmp_sublist; | |
2666 | tmp_sublist = tmp_sublist->next; | |
2667 | } | |
2668 | ||
2669 | destr_fnlist->fn_fieldlist.length = has_destructor; | |
2670 | destr_fnlist->next = fip->fnlist; | |
2671 | fip->fnlist = destr_fnlist; | |
2672 | nfn_fields++; | |
de17c821 DJ |
2673 | length -= has_destructor; |
2674 | } | |
2675 | else if (is_v3) | |
2676 | { | |
2677 | /* v3 mangling prevents the use of abbreviated physnames, | |
2678 | so we can do this here. There are stubbed methods in v3 | |
2679 | only: | |
2680 | - in -gstabs instead of -gstabs+ | |
2681 | - or for static methods, which are output as a function type | |
2682 | instead of a method type. */ | |
0d5cff50 DE |
2683 | char *new_method_name = |
2684 | stabs_method_name_from_physname (sublist->fn_field.physname); | |
de17c821 | 2685 | |
0d5cff50 DE |
2686 | if (new_method_name != NULL |
2687 | && strcmp (new_method_name, | |
2688 | new_fnlist->fn_fieldlist.name) != 0) | |
2689 | { | |
2690 | new_fnlist->fn_fieldlist.name = new_method_name; | |
2691 | xfree (main_fn_name); | |
2692 | } | |
2693 | else | |
2694 | xfree (new_method_name); | |
de17c821 DJ |
2695 | } |
2696 | else if (has_destructor && new_fnlist->fn_fieldlist.name[0] != '~') | |
2697 | { | |
1754f103 | 2698 | new_fnlist->fn_fieldlist.name = |
0d5cff50 DE |
2699 | obconcat (&objfile->objfile_obstack, |
2700 | "~", main_fn_name, (char *)NULL); | |
de17c821 DJ |
2701 | xfree (main_fn_name); |
2702 | } | |
2703 | else if (!has_stub) | |
2704 | { | |
2705 | char dem_opname[256]; | |
2706 | int ret; | |
433759f7 | 2707 | |
de17c821 DJ |
2708 | ret = cplus_demangle_opname (new_fnlist->fn_fieldlist.name, |
2709 | dem_opname, DMGL_ANSI); | |
2710 | if (!ret) | |
2711 | ret = cplus_demangle_opname (new_fnlist->fn_fieldlist.name, | |
2712 | dem_opname, 0); | |
2713 | if (ret) | |
2714 | new_fnlist->fn_fieldlist.name | |
2715 | = obsavestring (dem_opname, strlen (dem_opname), | |
b99607ea | 2716 | &objfile->objfile_obstack); |
0d5cff50 | 2717 | xfree (main_fn_name); |
de17c821 DJ |
2718 | } |
2719 | ||
0c867556 | 2720 | new_fnlist->fn_fieldlist.fn_fields = (struct fn_field *) |
b99607ea | 2721 | obstack_alloc (&objfile->objfile_obstack, |
0c867556 PS |
2722 | sizeof (struct fn_field) * length); |
2723 | memset (new_fnlist->fn_fieldlist.fn_fields, 0, | |
2724 | sizeof (struct fn_field) * length); | |
2725 | for (i = length; (i--, sublist); sublist = sublist->next) | |
2726 | { | |
2727 | new_fnlist->fn_fieldlist.fn_fields[i] = sublist->fn_field; | |
2728 | } | |
c5aa993b | 2729 | |
0c867556 PS |
2730 | new_fnlist->fn_fieldlist.length = length; |
2731 | new_fnlist->next = fip->fnlist; | |
2732 | fip->fnlist = new_fnlist; | |
2733 | nfn_fields++; | |
0c867556 | 2734 | } |
c906108c SS |
2735 | } |
2736 | ||
2737 | if (nfn_fields) | |
2738 | { | |
2739 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
2740 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
2741 | TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * nfn_fields); | |
2742 | memset (TYPE_FN_FIELDLISTS (type), 0, | |
2743 | sizeof (struct fn_fieldlist) * nfn_fields); | |
2744 | TYPE_NFN_FIELDS (type) = nfn_fields; | |
c906108c SS |
2745 | } |
2746 | ||
2747 | return 1; | |
2748 | } | |
2749 | ||
2750 | /* Special GNU C++ name. | |
2751 | ||
2752 | Returns 1 for success, 0 for failure. "failure" means that we can't | |
2753 | keep parsing and it's time for error_type(). */ | |
2754 | ||
2755 | static int | |
fba45db2 KB |
2756 | read_cpp_abbrev (struct field_info *fip, char **pp, struct type *type, |
2757 | struct objfile *objfile) | |
c906108c | 2758 | { |
52f0bd74 | 2759 | char *p; |
0d5cff50 | 2760 | const char *name; |
c906108c SS |
2761 | char cpp_abbrev; |
2762 | struct type *context; | |
2763 | ||
2764 | p = *pp; | |
2765 | if (*++p == 'v') | |
2766 | { | |
2767 | name = NULL; | |
2768 | cpp_abbrev = *++p; | |
2769 | ||
2770 | *pp = p + 1; | |
2771 | ||
2772 | /* At this point, *pp points to something like "22:23=*22...", | |
c5aa993b JM |
2773 | where the type number before the ':' is the "context" and |
2774 | everything after is a regular type definition. Lookup the | |
c378eb4e | 2775 | type, find it's name, and construct the field name. */ |
c906108c SS |
2776 | |
2777 | context = read_type (pp, objfile); | |
2778 | ||
2779 | switch (cpp_abbrev) | |
2780 | { | |
c5aa993b | 2781 | case 'f': /* $vf -- a virtual function table pointer */ |
c2bd2ed9 JB |
2782 | name = type_name_no_tag (context); |
2783 | if (name == NULL) | |
433759f7 MS |
2784 | { |
2785 | name = ""; | |
2786 | } | |
48cb83fd JK |
2787 | fip->list->field.name = obconcat (&objfile->objfile_obstack, |
2788 | vptr_name, name, (char *) NULL); | |
c5aa993b | 2789 | break; |
c906108c | 2790 | |
c5aa993b JM |
2791 | case 'b': /* $vb -- a virtual bsomethingorother */ |
2792 | name = type_name_no_tag (context); | |
2793 | if (name == NULL) | |
2794 | { | |
23136709 | 2795 | complaint (&symfile_complaints, |
3e43a32a MS |
2796 | _("C++ abbreviated type name " |
2797 | "unknown at symtab pos %d"), | |
23136709 | 2798 | symnum); |
c5aa993b JM |
2799 | name = "FOO"; |
2800 | } | |
48cb83fd JK |
2801 | fip->list->field.name = obconcat (&objfile->objfile_obstack, vb_name, |
2802 | name, (char *) NULL); | |
c5aa993b | 2803 | break; |
c906108c | 2804 | |
c5aa993b | 2805 | default: |
23136709 | 2806 | invalid_cpp_abbrev_complaint (*pp); |
48cb83fd JK |
2807 | fip->list->field.name = obconcat (&objfile->objfile_obstack, |
2808 | "INVALID_CPLUSPLUS_ABBREV", | |
2809 | (char *) NULL); | |
c5aa993b | 2810 | break; |
c906108c SS |
2811 | } |
2812 | ||
2813 | /* At this point, *pp points to the ':'. Skip it and read the | |
c378eb4e | 2814 | field type. */ |
c906108c SS |
2815 | |
2816 | p = ++(*pp); | |
2817 | if (p[-1] != ':') | |
2818 | { | |
23136709 | 2819 | invalid_cpp_abbrev_complaint (*pp); |
c906108c SS |
2820 | return 0; |
2821 | } | |
2822 | fip->list->field.type = read_type (pp, objfile); | |
2823 | if (**pp == ',') | |
c5aa993b | 2824 | (*pp)++; /* Skip the comma. */ |
c906108c SS |
2825 | else |
2826 | return 0; | |
2827 | ||
2828 | { | |
2829 | int nbits; | |
433759f7 | 2830 | |
f41f5e61 PA |
2831 | SET_FIELD_BITPOS (fip->list->field, |
2832 | read_huge_number (pp, ';', &nbits, 0)); | |
c906108c SS |
2833 | if (nbits != 0) |
2834 | return 0; | |
2835 | } | |
2836 | /* This field is unpacked. */ | |
2837 | FIELD_BITSIZE (fip->list->field) = 0; | |
2838 | fip->list->visibility = VISIBILITY_PRIVATE; | |
2839 | } | |
2840 | else | |
2841 | { | |
23136709 | 2842 | invalid_cpp_abbrev_complaint (*pp); |
c906108c | 2843 | /* We have no idea what syntax an unrecognized abbrev would have, so |
c5aa993b JM |
2844 | better return 0. If we returned 1, we would need to at least advance |
2845 | *pp to avoid an infinite loop. */ | |
c906108c SS |
2846 | return 0; |
2847 | } | |
2848 | return 1; | |
2849 | } | |
2850 | ||
2851 | static void | |
fba45db2 KB |
2852 | read_one_struct_field (struct field_info *fip, char **pp, char *p, |
2853 | struct type *type, struct objfile *objfile) | |
c906108c | 2854 | { |
5e2b427d UW |
2855 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
2856 | ||
41989fcd | 2857 | fip->list->field.name = |
b99607ea | 2858 | obsavestring (*pp, p - *pp, &objfile->objfile_obstack); |
c906108c SS |
2859 | *pp = p + 1; |
2860 | ||
c378eb4e | 2861 | /* This means we have a visibility for a field coming. */ |
c906108c SS |
2862 | if (**pp == '/') |
2863 | { | |
2864 | (*pp)++; | |
c5aa993b | 2865 | fip->list->visibility = *(*pp)++; |
c906108c SS |
2866 | } |
2867 | else | |
2868 | { | |
2869 | /* normal dbx-style format, no explicit visibility */ | |
c5aa993b | 2870 | fip->list->visibility = VISIBILITY_PUBLIC; |
c906108c SS |
2871 | } |
2872 | ||
c5aa993b | 2873 | fip->list->field.type = read_type (pp, objfile); |
c906108c SS |
2874 | if (**pp == ':') |
2875 | { | |
2876 | p = ++(*pp); | |
2877 | #if 0 | |
c378eb4e | 2878 | /* Possible future hook for nested types. */ |
c906108c SS |
2879 | if (**pp == '!') |
2880 | { | |
c5aa993b | 2881 | fip->list->field.bitpos = (long) -2; /* nested type */ |
c906108c SS |
2882 | p = ++(*pp); |
2883 | } | |
c5aa993b JM |
2884 | else |
2885 | ...; | |
c906108c | 2886 | #endif |
c5aa993b | 2887 | while (*p != ';') |
c906108c SS |
2888 | { |
2889 | p++; | |
2890 | } | |
2891 | /* Static class member. */ | |
2892 | SET_FIELD_PHYSNAME (fip->list->field, savestring (*pp, p - *pp)); | |
2893 | *pp = p + 1; | |
2894 | return; | |
2895 | } | |
2896 | else if (**pp != ',') | |
2897 | { | |
2898 | /* Bad structure-type format. */ | |
23136709 | 2899 | stabs_general_complaint ("bad structure-type format"); |
c906108c SS |
2900 | return; |
2901 | } | |
2902 | ||
2903 | (*pp)++; /* Skip the comma. */ | |
2904 | ||
2905 | { | |
2906 | int nbits; | |
433759f7 | 2907 | |
f41f5e61 PA |
2908 | SET_FIELD_BITPOS (fip->list->field, |
2909 | read_huge_number (pp, ',', &nbits, 0)); | |
c906108c SS |
2910 | if (nbits != 0) |
2911 | { | |
23136709 | 2912 | stabs_general_complaint ("bad structure-type format"); |
c906108c SS |
2913 | return; |
2914 | } | |
94e10a22 | 2915 | FIELD_BITSIZE (fip->list->field) = read_huge_number (pp, ';', &nbits, 0); |
c906108c SS |
2916 | if (nbits != 0) |
2917 | { | |
23136709 | 2918 | stabs_general_complaint ("bad structure-type format"); |
c906108c SS |
2919 | return; |
2920 | } | |
2921 | } | |
2922 | ||
2923 | if (FIELD_BITPOS (fip->list->field) == 0 | |
2924 | && FIELD_BITSIZE (fip->list->field) == 0) | |
2925 | { | |
2926 | /* This can happen in two cases: (1) at least for gcc 2.4.5 or so, | |
c5aa993b JM |
2927 | it is a field which has been optimized out. The correct stab for |
2928 | this case is to use VISIBILITY_IGNORE, but that is a recent | |
2929 | invention. (2) It is a 0-size array. For example | |
e2e0b3e5 | 2930 | union { int num; char str[0]; } foo. Printing _("<no value>" for |
c5aa993b JM |
2931 | str in "p foo" is OK, since foo.str (and thus foo.str[3]) |
2932 | will continue to work, and a 0-size array as a whole doesn't | |
2933 | have any contents to print. | |
2934 | ||
2935 | I suspect this probably could also happen with gcc -gstabs (not | |
2936 | -gstabs+) for static fields, and perhaps other C++ extensions. | |
2937 | Hopefully few people use -gstabs with gdb, since it is intended | |
2938 | for dbx compatibility. */ | |
c906108c SS |
2939 | |
2940 | /* Ignore this field. */ | |
c5aa993b | 2941 | fip->list->visibility = VISIBILITY_IGNORE; |
c906108c SS |
2942 | } |
2943 | else | |
2944 | { | |
2945 | /* Detect an unpacked field and mark it as such. | |
c5aa993b JM |
2946 | dbx gives a bit size for all fields. |
2947 | Note that forward refs cannot be packed, | |
2948 | and treat enums as if they had the width of ints. */ | |
c906108c SS |
2949 | |
2950 | struct type *field_type = check_typedef (FIELD_TYPE (fip->list->field)); | |
2951 | ||
2952 | if (TYPE_CODE (field_type) != TYPE_CODE_INT | |
2953 | && TYPE_CODE (field_type) != TYPE_CODE_RANGE | |
2954 | && TYPE_CODE (field_type) != TYPE_CODE_BOOL | |
2955 | && TYPE_CODE (field_type) != TYPE_CODE_ENUM) | |
2956 | { | |
2957 | FIELD_BITSIZE (fip->list->field) = 0; | |
2958 | } | |
c5aa993b | 2959 | if ((FIELD_BITSIZE (fip->list->field) |
c906108c SS |
2960 | == TARGET_CHAR_BIT * TYPE_LENGTH (field_type) |
2961 | || (TYPE_CODE (field_type) == TYPE_CODE_ENUM | |
9a76efb6 | 2962 | && FIELD_BITSIZE (fip->list->field) |
5e2b427d | 2963 | == gdbarch_int_bit (gdbarch)) |
c5aa993b | 2964 | ) |
c906108c SS |
2965 | && |
2966 | FIELD_BITPOS (fip->list->field) % 8 == 0) | |
2967 | { | |
2968 | FIELD_BITSIZE (fip->list->field) = 0; | |
2969 | } | |
2970 | } | |
2971 | } | |
2972 | ||
2973 | ||
2974 | /* Read struct or class data fields. They have the form: | |
2975 | ||
c5aa993b | 2976 | NAME : [VISIBILITY] TYPENUM , BITPOS , BITSIZE ; |
c906108c SS |
2977 | |
2978 | At the end, we see a semicolon instead of a field. | |
2979 | ||
2980 | In C++, this may wind up being NAME:?TYPENUM:PHYSNAME; for | |
2981 | a static field. | |
2982 | ||
2983 | The optional VISIBILITY is one of: | |
2984 | ||
c5aa993b JM |
2985 | '/0' (VISIBILITY_PRIVATE) |
2986 | '/1' (VISIBILITY_PROTECTED) | |
2987 | '/2' (VISIBILITY_PUBLIC) | |
2988 | '/9' (VISIBILITY_IGNORE) | |
c906108c SS |
2989 | |
2990 | or nothing, for C style fields with public visibility. | |
2991 | ||
2992 | Returns 1 for success, 0 for failure. */ | |
2993 | ||
2994 | static int | |
fba45db2 KB |
2995 | read_struct_fields (struct field_info *fip, char **pp, struct type *type, |
2996 | struct objfile *objfile) | |
c906108c | 2997 | { |
52f0bd74 | 2998 | char *p; |
c906108c SS |
2999 | struct nextfield *new; |
3000 | ||
3001 | /* We better set p right now, in case there are no fields at all... */ | |
3002 | ||
3003 | p = *pp; | |
3004 | ||
3005 | /* Read each data member type until we find the terminating ';' at the end of | |
3006 | the data member list, or break for some other reason such as finding the | |
c378eb4e | 3007 | start of the member function list. */ |
fedbd091 | 3008 | /* Stab string for structure/union does not end with two ';' in |
c378eb4e | 3009 | SUN C compiler 5.3 i.e. F6U2, hence check for end of string. */ |
c906108c | 3010 | |
fedbd091 | 3011 | while (**pp != ';' && **pp != '\0') |
c906108c | 3012 | { |
c906108c SS |
3013 | STABS_CONTINUE (pp, objfile); |
3014 | /* Get space to record the next field's data. */ | |
3015 | new = (struct nextfield *) xmalloc (sizeof (struct nextfield)); | |
b8c9b27d | 3016 | make_cleanup (xfree, new); |
c906108c | 3017 | memset (new, 0, sizeof (struct nextfield)); |
c5aa993b JM |
3018 | new->next = fip->list; |
3019 | fip->list = new; | |
c906108c SS |
3020 | |
3021 | /* Get the field name. */ | |
3022 | p = *pp; | |
3023 | ||
3024 | /* If is starts with CPLUS_MARKER it is a special abbreviation, | |
c5aa993b JM |
3025 | unless the CPLUS_MARKER is followed by an underscore, in |
3026 | which case it is just the name of an anonymous type, which we | |
3027 | should handle like any other type name. */ | |
c906108c SS |
3028 | |
3029 | if (is_cplus_marker (p[0]) && p[1] != '_') | |
3030 | { | |
3031 | if (!read_cpp_abbrev (fip, pp, type, objfile)) | |
3032 | return 0; | |
3033 | continue; | |
3034 | } | |
3035 | ||
3036 | /* Look for the ':' that separates the field name from the field | |
c5aa993b JM |
3037 | values. Data members are delimited by a single ':', while member |
3038 | functions are delimited by a pair of ':'s. When we hit the member | |
c378eb4e | 3039 | functions (if any), terminate scan loop and return. */ |
c906108c | 3040 | |
c5aa993b | 3041 | while (*p != ':' && *p != '\0') |
c906108c SS |
3042 | { |
3043 | p++; | |
3044 | } | |
3045 | if (*p == '\0') | |
3046 | return 0; | |
3047 | ||
3048 | /* Check to see if we have hit the member functions yet. */ | |
3049 | if (p[1] == ':') | |
3050 | { | |
3051 | break; | |
3052 | } | |
3053 | read_one_struct_field (fip, pp, p, type, objfile); | |
3054 | } | |
3055 | if (p[0] == ':' && p[1] == ':') | |
3056 | { | |
1b831c93 AC |
3057 | /* (the deleted) chill the list of fields: the last entry (at |
3058 | the head) is a partially constructed entry which we now | |
c378eb4e | 3059 | scrub. */ |
c5aa993b | 3060 | fip->list = fip->list->next; |
c906108c SS |
3061 | } |
3062 | return 1; | |
3063 | } | |
9846de1b | 3064 | /* *INDENT-OFF* */ |
c906108c SS |
3065 | /* The stabs for C++ derived classes contain baseclass information which |
3066 | is marked by a '!' character after the total size. This function is | |
3067 | called when we encounter the baseclass marker, and slurps up all the | |
3068 | baseclass information. | |
3069 | ||
3070 | Immediately following the '!' marker is the number of base classes that | |
3071 | the class is derived from, followed by information for each base class. | |
3072 | For each base class, there are two visibility specifiers, a bit offset | |
3073 | to the base class information within the derived class, a reference to | |
3074 | the type for the base class, and a terminating semicolon. | |
3075 | ||
3076 | A typical example, with two base classes, would be "!2,020,19;0264,21;". | |
3077 | ^^ ^ ^ ^ ^ ^ ^ | |
3078 | Baseclass information marker __________________|| | | | | | | | |
3079 | Number of baseclasses __________________________| | | | | | | | |
3080 | Visibility specifiers (2) ________________________| | | | | | | |
3081 | Offset in bits from start of class _________________| | | | | | |
3082 | Type number for base class ___________________________| | | | | |
3083 | Visibility specifiers (2) _______________________________| | | | |
3084 | Offset in bits from start of class ________________________| | | |
3085 | Type number of base class ____________________________________| | |
3086 | ||
3087 | Return 1 for success, 0 for (error-type-inducing) failure. */ | |
9846de1b | 3088 | /* *INDENT-ON* */ |
c906108c | 3089 | |
c5aa993b JM |
3090 | |
3091 | ||
c906108c | 3092 | static int |
fba45db2 KB |
3093 | read_baseclasses (struct field_info *fip, char **pp, struct type *type, |
3094 | struct objfile *objfile) | |
c906108c SS |
3095 | { |
3096 | int i; | |
3097 | struct nextfield *new; | |
3098 | ||
3099 | if (**pp != '!') | |
3100 | { | |
3101 | return 1; | |
3102 | } | |
3103 | else | |
3104 | { | |
c378eb4e | 3105 | /* Skip the '!' baseclass information marker. */ |
c906108c SS |
3106 | (*pp)++; |
3107 | } | |
3108 | ||
3109 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
3110 | { | |
3111 | int nbits; | |
433759f7 | 3112 | |
94e10a22 | 3113 | TYPE_N_BASECLASSES (type) = read_huge_number (pp, ',', &nbits, 0); |
c906108c SS |
3114 | if (nbits != 0) |
3115 | return 0; | |
3116 | } | |
3117 | ||
3118 | #if 0 | |
3119 | /* Some stupid compilers have trouble with the following, so break | |
3120 | it up into simpler expressions. */ | |
3121 | TYPE_FIELD_VIRTUAL_BITS (type) = (B_TYPE *) | |
3122 | TYPE_ALLOC (type, B_BYTES (TYPE_N_BASECLASSES (type))); | |
3123 | #else | |
3124 | { | |
3125 | int num_bytes = B_BYTES (TYPE_N_BASECLASSES (type)); | |
3126 | char *pointer; | |
3127 | ||
3128 | pointer = (char *) TYPE_ALLOC (type, num_bytes); | |
3129 | TYPE_FIELD_VIRTUAL_BITS (type) = (B_TYPE *) pointer; | |
3130 | } | |
3131 | #endif /* 0 */ | |
3132 | ||
3133 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), TYPE_N_BASECLASSES (type)); | |
3134 | ||
3135 | for (i = 0; i < TYPE_N_BASECLASSES (type); i++) | |
3136 | { | |
3137 | new = (struct nextfield *) xmalloc (sizeof (struct nextfield)); | |
b8c9b27d | 3138 | make_cleanup (xfree, new); |
c906108c | 3139 | memset (new, 0, sizeof (struct nextfield)); |
c5aa993b JM |
3140 | new->next = fip->list; |
3141 | fip->list = new; | |
c378eb4e MS |
3142 | FIELD_BITSIZE (new->field) = 0; /* This should be an unpacked |
3143 | field! */ | |
c906108c SS |
3144 | |
3145 | STABS_CONTINUE (pp, objfile); | |
3146 | switch (**pp) | |
3147 | { | |
c5aa993b | 3148 | case '0': |
c378eb4e | 3149 | /* Nothing to do. */ |
c5aa993b JM |
3150 | break; |
3151 | case '1': | |
3152 | SET_TYPE_FIELD_VIRTUAL (type, i); | |
3153 | break; | |
3154 | default: | |
3155 | /* Unknown character. Complain and treat it as non-virtual. */ | |
3156 | { | |
23136709 | 3157 | complaint (&symfile_complaints, |
3e43a32a MS |
3158 | _("Unknown virtual character `%c' for baseclass"), |
3159 | **pp); | |
c5aa993b | 3160 | } |
c906108c SS |
3161 | } |
3162 | ++(*pp); | |
3163 | ||
c5aa993b JM |
3164 | new->visibility = *(*pp)++; |
3165 | switch (new->visibility) | |
c906108c | 3166 | { |
c5aa993b JM |
3167 | case VISIBILITY_PRIVATE: |
3168 | case VISIBILITY_PROTECTED: | |
3169 | case VISIBILITY_PUBLIC: | |
3170 | break; | |
3171 | default: | |
3172 | /* Bad visibility format. Complain and treat it as | |
3173 | public. */ | |
3174 | { | |
23136709 | 3175 | complaint (&symfile_complaints, |
e2e0b3e5 | 3176 | _("Unknown visibility `%c' for baseclass"), |
23136709 | 3177 | new->visibility); |
c5aa993b JM |
3178 | new->visibility = VISIBILITY_PUBLIC; |
3179 | } | |
c906108c SS |
3180 | } |
3181 | ||
3182 | { | |
3183 | int nbits; | |
c5aa993b | 3184 | |
c906108c SS |
3185 | /* The remaining value is the bit offset of the portion of the object |
3186 | corresponding to this baseclass. Always zero in the absence of | |
3187 | multiple inheritance. */ | |
3188 | ||
f41f5e61 | 3189 | SET_FIELD_BITPOS (new->field, read_huge_number (pp, ',', &nbits, 0)); |
c906108c SS |
3190 | if (nbits != 0) |
3191 | return 0; | |
3192 | } | |
3193 | ||
3194 | /* The last piece of baseclass information is the type of the | |
c5aa993b | 3195 | base class. Read it, and remember it's type name as this |
c378eb4e | 3196 | field's name. */ |
c906108c | 3197 | |
c5aa993b JM |
3198 | new->field.type = read_type (pp, objfile); |
3199 | new->field.name = type_name_no_tag (new->field.type); | |
c906108c | 3200 | |
c378eb4e | 3201 | /* Skip trailing ';' and bump count of number of fields seen. */ |
c906108c SS |
3202 | if (**pp == ';') |
3203 | (*pp)++; | |
3204 | else | |
3205 | return 0; | |
3206 | } | |
3207 | return 1; | |
3208 | } | |
3209 | ||
3210 | /* The tail end of stabs for C++ classes that contain a virtual function | |
3211 | pointer contains a tilde, a %, and a type number. | |
3212 | The type number refers to the base class (possibly this class itself) which | |
3213 | contains the vtable pointer for the current class. | |
3214 | ||
3215 | This function is called when we have parsed all the method declarations, | |
3216 | so we can look for the vptr base class info. */ | |
3217 | ||
3218 | static int | |
fba45db2 KB |
3219 | read_tilde_fields (struct field_info *fip, char **pp, struct type *type, |
3220 | struct objfile *objfile) | |
c906108c | 3221 | { |
52f0bd74 | 3222 | char *p; |
c906108c SS |
3223 | |
3224 | STABS_CONTINUE (pp, objfile); | |
3225 | ||
c378eb4e | 3226 | /* If we are positioned at a ';', then skip it. */ |
c906108c SS |
3227 | if (**pp == ';') |
3228 | { | |
3229 | (*pp)++; | |
3230 | } | |
3231 | ||
3232 | if (**pp == '~') | |
3233 | { | |
3234 | (*pp)++; | |
3235 | ||
3236 | if (**pp == '=' || **pp == '+' || **pp == '-') | |
3237 | { | |
3238 | /* Obsolete flags that used to indicate the presence | |
c378eb4e | 3239 | of constructors and/or destructors. */ |
c906108c SS |
3240 | (*pp)++; |
3241 | } | |
3242 | ||
3243 | /* Read either a '%' or the final ';'. */ | |
3244 | if (*(*pp)++ == '%') | |
3245 | { | |
3246 | /* The next number is the type number of the base class | |
3247 | (possibly our own class) which supplies the vtable for | |
3248 | this class. Parse it out, and search that class to find | |
3249 | its vtable pointer, and install those into TYPE_VPTR_BASETYPE | |
3250 | and TYPE_VPTR_FIELDNO. */ | |
3251 | ||
3252 | struct type *t; | |
3253 | int i; | |
3254 | ||
3255 | t = read_type (pp, objfile); | |
3256 | p = (*pp)++; | |
3257 | while (*p != '\0' && *p != ';') | |
3258 | { | |
3259 | p++; | |
3260 | } | |
3261 | if (*p == '\0') | |
3262 | { | |
3263 | /* Premature end of symbol. */ | |
3264 | return 0; | |
3265 | } | |
c5aa993b | 3266 | |
c906108c | 3267 | TYPE_VPTR_BASETYPE (type) = t; |
c378eb4e | 3268 | if (type == t) /* Our own class provides vtbl ptr. */ |
c906108c SS |
3269 | { |
3270 | for (i = TYPE_NFIELDS (t) - 1; | |
3271 | i >= TYPE_N_BASECLASSES (t); | |
3272 | --i) | |
3273 | { | |
0d5cff50 | 3274 | const char *name = TYPE_FIELD_NAME (t, i); |
433759f7 | 3275 | |
8343f86c | 3276 | if (!strncmp (name, vptr_name, sizeof (vptr_name) - 2) |
74451869 | 3277 | && is_cplus_marker (name[sizeof (vptr_name) - 2])) |
c906108c SS |
3278 | { |
3279 | TYPE_VPTR_FIELDNO (type) = i; | |
3280 | goto gotit; | |
3281 | } | |
3282 | } | |
3283 | /* Virtual function table field not found. */ | |
23136709 | 3284 | complaint (&symfile_complaints, |
3e43a32a MS |
3285 | _("virtual function table pointer " |
3286 | "not found when defining class `%s'"), | |
23136709 | 3287 | TYPE_NAME (type)); |
c906108c SS |
3288 | return 0; |
3289 | } | |
3290 | else | |
3291 | { | |
3292 | TYPE_VPTR_FIELDNO (type) = TYPE_VPTR_FIELDNO (t); | |
3293 | } | |
3294 | ||
c5aa993b | 3295 | gotit: |
c906108c SS |
3296 | *pp = p + 1; |
3297 | } | |
3298 | } | |
3299 | return 1; | |
3300 | } | |
3301 | ||
3302 | static int | |
aa1ee363 | 3303 | attach_fn_fields_to_type (struct field_info *fip, struct type *type) |
c906108c | 3304 | { |
52f0bd74 | 3305 | int n; |
c906108c SS |
3306 | |
3307 | for (n = TYPE_NFN_FIELDS (type); | |
c5aa993b JM |
3308 | fip->fnlist != NULL; |
3309 | fip->fnlist = fip->fnlist->next) | |
c906108c | 3310 | { |
c378eb4e | 3311 | --n; /* Circumvent Sun3 compiler bug. */ |
c5aa993b | 3312 | TYPE_FN_FIELDLISTS (type)[n] = fip->fnlist->fn_fieldlist; |
c906108c SS |
3313 | } |
3314 | return 1; | |
3315 | } | |
3316 | ||
c906108c SS |
3317 | /* Create the vector of fields, and record how big it is. |
3318 | We need this info to record proper virtual function table information | |
3319 | for this class's virtual functions. */ | |
3320 | ||
3321 | static int | |
aa1ee363 | 3322 | attach_fields_to_type (struct field_info *fip, struct type *type, |
fba45db2 | 3323 | struct objfile *objfile) |
c906108c | 3324 | { |
52f0bd74 AC |
3325 | int nfields = 0; |
3326 | int non_public_fields = 0; | |
3327 | struct nextfield *scan; | |
c906108c SS |
3328 | |
3329 | /* Count up the number of fields that we have, as well as taking note of | |
3330 | whether or not there are any non-public fields, which requires us to | |
3331 | allocate and build the private_field_bits and protected_field_bits | |
c378eb4e | 3332 | bitfields. */ |
c906108c | 3333 | |
c5aa993b | 3334 | for (scan = fip->list; scan != NULL; scan = scan->next) |
c906108c SS |
3335 | { |
3336 | nfields++; | |
c5aa993b | 3337 | if (scan->visibility != VISIBILITY_PUBLIC) |
c906108c SS |
3338 | { |
3339 | non_public_fields++; | |
3340 | } | |
3341 | } | |
3342 | ||
3343 | /* Now we know how many fields there are, and whether or not there are any | |
3344 | non-public fields. Record the field count, allocate space for the | |
c378eb4e | 3345 | array of fields, and create blank visibility bitfields if necessary. */ |
c906108c SS |
3346 | |
3347 | TYPE_NFIELDS (type) = nfields; | |
3348 | TYPE_FIELDS (type) = (struct field *) | |
3349 | TYPE_ALLOC (type, sizeof (struct field) * nfields); | |
3350 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields); | |
3351 | ||
3352 | if (non_public_fields) | |
3353 | { | |
3354 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
3355 | ||
3356 | TYPE_FIELD_PRIVATE_BITS (type) = | |
3357 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
3358 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
3359 | ||
3360 | TYPE_FIELD_PROTECTED_BITS (type) = | |
3361 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
3362 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
3363 | ||
3364 | TYPE_FIELD_IGNORE_BITS (type) = | |
3365 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
3366 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
3367 | } | |
3368 | ||
c378eb4e MS |
3369 | /* Copy the saved-up fields into the field vector. Start from the |
3370 | head of the list, adding to the tail of the field array, so that | |
3371 | they end up in the same order in the array in which they were | |
3372 | added to the list. */ | |
c906108c SS |
3373 | |
3374 | while (nfields-- > 0) | |
3375 | { | |
c5aa993b JM |
3376 | TYPE_FIELD (type, nfields) = fip->list->field; |
3377 | switch (fip->list->visibility) | |
c906108c | 3378 | { |
c5aa993b JM |
3379 | case VISIBILITY_PRIVATE: |
3380 | SET_TYPE_FIELD_PRIVATE (type, nfields); | |
3381 | break; | |
c906108c | 3382 | |
c5aa993b JM |
3383 | case VISIBILITY_PROTECTED: |
3384 | SET_TYPE_FIELD_PROTECTED (type, nfields); | |
3385 | break; | |
c906108c | 3386 | |
c5aa993b JM |
3387 | case VISIBILITY_IGNORE: |
3388 | SET_TYPE_FIELD_IGNORE (type, nfields); | |
3389 | break; | |
c906108c | 3390 | |
c5aa993b JM |
3391 | case VISIBILITY_PUBLIC: |
3392 | break; | |
c906108c | 3393 | |
c5aa993b JM |
3394 | default: |
3395 | /* Unknown visibility. Complain and treat it as public. */ | |
3396 | { | |
3e43a32a MS |
3397 | complaint (&symfile_complaints, |
3398 | _("Unknown visibility `%c' for field"), | |
23136709 | 3399 | fip->list->visibility); |
c5aa993b JM |
3400 | } |
3401 | break; | |
c906108c | 3402 | } |
c5aa993b | 3403 | fip->list = fip->list->next; |
c906108c SS |
3404 | } |
3405 | return 1; | |
3406 | } | |
3407 | ||
2ae1c2d2 | 3408 | |
2ae1c2d2 JB |
3409 | /* Complain that the compiler has emitted more than one definition for the |
3410 | structure type TYPE. */ | |
3411 | static void | |
3412 | complain_about_struct_wipeout (struct type *type) | |
3413 | { | |
0d5cff50 DE |
3414 | const char *name = ""; |
3415 | const char *kind = ""; | |
2ae1c2d2 JB |
3416 | |
3417 | if (TYPE_TAG_NAME (type)) | |
3418 | { | |
3419 | name = TYPE_TAG_NAME (type); | |
3420 | switch (TYPE_CODE (type)) | |
3421 | { | |
3422 | case TYPE_CODE_STRUCT: kind = "struct "; break; | |
3423 | case TYPE_CODE_UNION: kind = "union "; break; | |
3424 | case TYPE_CODE_ENUM: kind = "enum "; break; | |
3425 | default: kind = ""; | |
3426 | } | |
3427 | } | |
3428 | else if (TYPE_NAME (type)) | |
3429 | { | |
3430 | name = TYPE_NAME (type); | |
3431 | kind = ""; | |
3432 | } | |
3433 | else | |
3434 | { | |
3435 | name = "<unknown>"; | |
3436 | kind = ""; | |
3437 | } | |
3438 | ||
23136709 | 3439 | complaint (&symfile_complaints, |
e2e0b3e5 | 3440 | _("struct/union type gets multiply defined: %s%s"), kind, name); |
2ae1c2d2 JB |
3441 | } |
3442 | ||
621791b8 PM |
3443 | /* Set the length for all variants of a same main_type, which are |
3444 | connected in the closed chain. | |
3445 | ||
3446 | This is something that needs to be done when a type is defined *after* | |
3447 | some cross references to this type have already been read. Consider | |
3448 | for instance the following scenario where we have the following two | |
3449 | stabs entries: | |
3450 | ||
3451 | .stabs "t:p(0,21)=*(0,22)=k(0,23)=xsdummy:",160,0,28,-24 | |
3452 | .stabs "dummy:T(0,23)=s16x:(0,1),0,3[...]" | |
3453 | ||
3454 | A stubbed version of type dummy is created while processing the first | |
3455 | stabs entry. The length of that type is initially set to zero, since | |
3456 | it is unknown at this point. Also, a "constant" variation of type | |
3457 | "dummy" is created as well (this is the "(0,22)=k(0,23)" section of | |
3458 | the stabs line). | |
3459 | ||
3460 | The second stabs entry allows us to replace the stubbed definition | |
3461 | with the real definition. However, we still need to adjust the length | |
3462 | of the "constant" variation of that type, as its length was left | |
3463 | untouched during the main type replacement... */ | |
3464 | ||
3465 | static void | |
9e69f3b6 | 3466 | set_length_in_type_chain (struct type *type) |
621791b8 PM |
3467 | { |
3468 | struct type *ntype = TYPE_CHAIN (type); | |
3469 | ||
3470 | while (ntype != type) | |
3471 | { | |
3472 | if (TYPE_LENGTH(ntype) == 0) | |
3473 | TYPE_LENGTH (ntype) = TYPE_LENGTH (type); | |
3474 | else | |
3475 | complain_about_struct_wipeout (ntype); | |
3476 | ntype = TYPE_CHAIN (ntype); | |
3477 | } | |
3478 | } | |
2ae1c2d2 | 3479 | |
c906108c SS |
3480 | /* Read the description of a structure (or union type) and return an object |
3481 | describing the type. | |
3482 | ||
3483 | PP points to a character pointer that points to the next unconsumed token | |
b021a221 | 3484 | in the stabs string. For example, given stabs "A:T4=s4a:1,0,32;;", |
c906108c SS |
3485 | *PP will point to "4a:1,0,32;;". |
3486 | ||
3487 | TYPE points to an incomplete type that needs to be filled in. | |
3488 | ||
3489 | OBJFILE points to the current objfile from which the stabs information is | |
3490 | being read. (Note that it is redundant in that TYPE also contains a pointer | |
3491 | to this same objfile, so it might be a good idea to eliminate it. FIXME). | |
c5aa993b | 3492 | */ |
c906108c SS |
3493 | |
3494 | static struct type * | |
2ae1c2d2 JB |
3495 | read_struct_type (char **pp, struct type *type, enum type_code type_code, |
3496 | struct objfile *objfile) | |
c906108c SS |
3497 | { |
3498 | struct cleanup *back_to; | |
3499 | struct field_info fi; | |
3500 | ||
3501 | fi.list = NULL; | |
3502 | fi.fnlist = NULL; | |
3503 | ||
2ae1c2d2 JB |
3504 | /* When describing struct/union/class types in stabs, G++ always drops |
3505 | all qualifications from the name. So if you've got: | |
3506 | struct A { ... struct B { ... }; ... }; | |
3507 | then G++ will emit stabs for `struct A::B' that call it simply | |
3508 | `struct B'. Obviously, if you've got a real top-level definition for | |
3509 | `struct B', or other nested definitions, this is going to cause | |
3510 | problems. | |
3511 | ||
3512 | Obviously, GDB can't fix this by itself, but it can at least avoid | |
3513 | scribbling on existing structure type objects when new definitions | |
3514 | appear. */ | |
3515 | if (! (TYPE_CODE (type) == TYPE_CODE_UNDEF | |
3516 | || TYPE_STUB (type))) | |
3517 | { | |
3518 | complain_about_struct_wipeout (type); | |
3519 | ||
3520 | /* It's probably best to return the type unchanged. */ | |
3521 | return type; | |
3522 | } | |
3523 | ||
c906108c SS |
3524 | back_to = make_cleanup (null_cleanup, 0); |
3525 | ||
3526 | INIT_CPLUS_SPECIFIC (type); | |
2ae1c2d2 | 3527 | TYPE_CODE (type) = type_code; |
876cecd0 | 3528 | TYPE_STUB (type) = 0; |
c906108c SS |
3529 | |
3530 | /* First comes the total size in bytes. */ | |
3531 | ||
3532 | { | |
3533 | int nbits; | |
433759f7 | 3534 | |
94e10a22 | 3535 | TYPE_LENGTH (type) = read_huge_number (pp, 0, &nbits, 0); |
c906108c SS |
3536 | if (nbits != 0) |
3537 | return error_type (pp, objfile); | |
621791b8 | 3538 | set_length_in_type_chain (type); |
c906108c SS |
3539 | } |
3540 | ||
3541 | /* Now read the baseclasses, if any, read the regular C struct or C++ | |
3542 | class member fields, attach the fields to the type, read the C++ | |
3543 | member functions, attach them to the type, and then read any tilde | |
3e43a32a | 3544 | field (baseclass specifier for the class holding the main vtable). */ |
c906108c SS |
3545 | |
3546 | if (!read_baseclasses (&fi, pp, type, objfile) | |
3547 | || !read_struct_fields (&fi, pp, type, objfile) | |
3548 | || !attach_fields_to_type (&fi, type, objfile) | |
3549 | || !read_member_functions (&fi, pp, type, objfile) | |
3550 | || !attach_fn_fields_to_type (&fi, type) | |
3551 | || !read_tilde_fields (&fi, pp, type, objfile)) | |
3552 | { | |
3553 | type = error_type (pp, objfile); | |
3554 | } | |
3555 | ||
3556 | do_cleanups (back_to); | |
3557 | return (type); | |
3558 | } | |
3559 | ||
3560 | /* Read a definition of an array type, | |
3561 | and create and return a suitable type object. | |
3562 | Also creates a range type which represents the bounds of that | |
3563 | array. */ | |
3564 | ||
3565 | static struct type * | |
aa1ee363 | 3566 | read_array_type (char **pp, struct type *type, |
fba45db2 | 3567 | struct objfile *objfile) |
c906108c SS |
3568 | { |
3569 | struct type *index_type, *element_type, *range_type; | |
3570 | int lower, upper; | |
3571 | int adjustable = 0; | |
3572 | int nbits; | |
3573 | ||
3574 | /* Format of an array type: | |
3575 | "ar<index type>;lower;upper;<array_contents_type>". | |
3576 | OS9000: "arlower,upper;<array_contents_type>". | |
3577 | ||
3578 | Fortran adjustable arrays use Adigits or Tdigits for lower or upper; | |
3579 | for these, produce a type like float[][]. */ | |
3580 | ||
c906108c SS |
3581 | { |
3582 | index_type = read_type (pp, objfile); | |
3583 | if (**pp != ';') | |
3584 | /* Improper format of array type decl. */ | |
3585 | return error_type (pp, objfile); | |
3586 | ++*pp; | |
3587 | } | |
3588 | ||
3589 | if (!(**pp >= '0' && **pp <= '9') && **pp != '-') | |
3590 | { | |
3591 | (*pp)++; | |
3592 | adjustable = 1; | |
3593 | } | |
94e10a22 | 3594 | lower = read_huge_number (pp, ';', &nbits, 0); |
cdecafbe | 3595 | |
c906108c SS |
3596 | if (nbits != 0) |
3597 | return error_type (pp, objfile); | |
3598 | ||
3599 | if (!(**pp >= '0' && **pp <= '9') && **pp != '-') | |
3600 | { | |
3601 | (*pp)++; | |
3602 | adjustable = 1; | |
3603 | } | |
94e10a22 | 3604 | upper = read_huge_number (pp, ';', &nbits, 0); |
c906108c SS |
3605 | if (nbits != 0) |
3606 | return error_type (pp, objfile); | |
c5aa993b | 3607 | |
c906108c SS |
3608 | element_type = read_type (pp, objfile); |
3609 | ||
3610 | if (adjustable) | |
3611 | { | |
3612 | lower = 0; | |
3613 | upper = -1; | |
3614 | } | |
3615 | ||
3616 | range_type = | |
3617 | create_range_type ((struct type *) NULL, index_type, lower, upper); | |
3618 | type = create_array_type (type, element_type, range_type); | |
3619 | ||
3620 | return type; | |
3621 | } | |
3622 | ||
3623 | ||
3624 | /* Read a definition of an enumeration type, | |
3625 | and create and return a suitable type object. | |
3626 | Also defines the symbols that represent the values of the type. */ | |
3627 | ||
3628 | static struct type * | |
aa1ee363 | 3629 | read_enum_type (char **pp, struct type *type, |
fba45db2 | 3630 | struct objfile *objfile) |
c906108c | 3631 | { |
5e2b427d | 3632 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
52f0bd74 | 3633 | char *p; |
c906108c | 3634 | char *name; |
52f0bd74 AC |
3635 | long n; |
3636 | struct symbol *sym; | |
c906108c SS |
3637 | int nsyms = 0; |
3638 | struct pending **symlist; | |
3639 | struct pending *osyms, *syms; | |
3640 | int o_nsyms; | |
3641 | int nbits; | |
3642 | int unsigned_enum = 1; | |
3643 | ||
3644 | #if 0 | |
3645 | /* FIXME! The stabs produced by Sun CC merrily define things that ought | |
3646 | to be file-scope, between N_FN entries, using N_LSYM. What's a mother | |
3647 | to do? For now, force all enum values to file scope. */ | |
3648 | if (within_function) | |
3649 | symlist = &local_symbols; | |
3650 | else | |
3651 | #endif | |
3652 | symlist = &file_symbols; | |
3653 | osyms = *symlist; | |
3654 | o_nsyms = osyms ? osyms->nsyms : 0; | |
3655 | ||
c906108c SS |
3656 | /* The aix4 compiler emits an extra field before the enum members; |
3657 | my guess is it's a type of some sort. Just ignore it. */ | |
3658 | if (**pp == '-') | |
3659 | { | |
3660 | /* Skip over the type. */ | |
3661 | while (**pp != ':') | |
c5aa993b | 3662 | (*pp)++; |
c906108c SS |
3663 | |
3664 | /* Skip over the colon. */ | |
3665 | (*pp)++; | |
3666 | } | |
3667 | ||
3668 | /* Read the value-names and their values. | |
3669 | The input syntax is NAME:VALUE,NAME:VALUE, and so on. | |
3670 | A semicolon or comma instead of a NAME means the end. */ | |
3671 | while (**pp && **pp != ';' && **pp != ',') | |
3672 | { | |
3673 | STABS_CONTINUE (pp, objfile); | |
3674 | p = *pp; | |
c5aa993b JM |
3675 | while (*p != ':') |
3676 | p++; | |
4a146b47 | 3677 | name = obsavestring (*pp, p - *pp, &objfile->objfile_obstack); |
c906108c | 3678 | *pp = p + 1; |
94e10a22 | 3679 | n = read_huge_number (pp, ',', &nbits, 0); |
c906108c SS |
3680 | if (nbits != 0) |
3681 | return error_type (pp, objfile); | |
3682 | ||
3683 | sym = (struct symbol *) | |
4a146b47 | 3684 | obstack_alloc (&objfile->objfile_obstack, sizeof (struct symbol)); |
c906108c | 3685 | memset (sym, 0, sizeof (struct symbol)); |
3567439c | 3686 | SYMBOL_SET_LINKAGE_NAME (sym, name); |
33e5013e | 3687 | SYMBOL_SET_LANGUAGE (sym, current_subfile->language); |
c906108c | 3688 | SYMBOL_CLASS (sym) = LOC_CONST; |
176620f1 | 3689 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
3690 | SYMBOL_VALUE (sym) = n; |
3691 | if (n < 0) | |
3692 | unsigned_enum = 0; | |
3693 | add_symbol_to_list (sym, symlist); | |
3694 | nsyms++; | |
3695 | } | |
3696 | ||
3697 | if (**pp == ';') | |
3698 | (*pp)++; /* Skip the semicolon. */ | |
3699 | ||
3700 | /* Now fill in the fields of the type-structure. */ | |
3701 | ||
5e2b427d | 3702 | TYPE_LENGTH (type) = gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT; |
621791b8 | 3703 | set_length_in_type_chain (type); |
c906108c | 3704 | TYPE_CODE (type) = TYPE_CODE_ENUM; |
876cecd0 | 3705 | TYPE_STUB (type) = 0; |
c906108c | 3706 | if (unsigned_enum) |
876cecd0 | 3707 | TYPE_UNSIGNED (type) = 1; |
c906108c SS |
3708 | TYPE_NFIELDS (type) = nsyms; |
3709 | TYPE_FIELDS (type) = (struct field *) | |
3710 | TYPE_ALLOC (type, sizeof (struct field) * nsyms); | |
3711 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nsyms); | |
3712 | ||
3713 | /* Find the symbols for the values and put them into the type. | |
3714 | The symbols can be found in the symlist that we put them on | |
3715 | to cause them to be defined. osyms contains the old value | |
3716 | of that symlist; everything up to there was defined by us. */ | |
3717 | /* Note that we preserve the order of the enum constants, so | |
3718 | that in something like "enum {FOO, LAST_THING=FOO}" we print | |
3719 | FOO, not LAST_THING. */ | |
3720 | ||
3721 | for (syms = *symlist, n = nsyms - 1; syms; syms = syms->next) | |
3722 | { | |
3723 | int last = syms == osyms ? o_nsyms : 0; | |
3724 | int j = syms->nsyms; | |
433759f7 | 3725 | |
c906108c SS |
3726 | for (; --j >= last; --n) |
3727 | { | |
3728 | struct symbol *xsym = syms->symbol[j]; | |
433759f7 | 3729 | |
c906108c | 3730 | SYMBOL_TYPE (xsym) = type; |
3567439c | 3731 | TYPE_FIELD_NAME (type, n) = SYMBOL_LINKAGE_NAME (xsym); |
14e75d8e | 3732 | SET_FIELD_ENUMVAL (TYPE_FIELD (type, n), SYMBOL_VALUE (xsym)); |
c906108c SS |
3733 | TYPE_FIELD_BITSIZE (type, n) = 0; |
3734 | } | |
3735 | if (syms == osyms) | |
3736 | break; | |
3737 | } | |
3738 | ||
3739 | return type; | |
3740 | } | |
3741 | ||
3742 | /* Sun's ACC uses a somewhat saner method for specifying the builtin | |
3743 | typedefs in every file (for int, long, etc): | |
3744 | ||
c5aa993b JM |
3745 | type = b <signed> <width> <format type>; <offset>; <nbits> |
3746 | signed = u or s. | |
3747 | optional format type = c or b for char or boolean. | |
3748 | offset = offset from high order bit to start bit of type. | |
3749 | width is # bytes in object of this type, nbits is # bits in type. | |
c906108c SS |
3750 | |
3751 | The width/offset stuff appears to be for small objects stored in | |
3752 | larger ones (e.g. `shorts' in `int' registers). We ignore it for now, | |
3753 | FIXME. */ | |
3754 | ||
3755 | static struct type * | |
35a2f538 | 3756 | read_sun_builtin_type (char **pp, int typenums[2], struct objfile *objfile) |
c906108c SS |
3757 | { |
3758 | int type_bits; | |
3759 | int nbits; | |
3760 | int signed_type; | |
3761 | enum type_code code = TYPE_CODE_INT; | |
3762 | ||
3763 | switch (**pp) | |
3764 | { | |
c5aa993b JM |
3765 | case 's': |
3766 | signed_type = 1; | |
3767 | break; | |
3768 | case 'u': | |
3769 | signed_type = 0; | |
3770 | break; | |
3771 | default: | |
3772 | return error_type (pp, objfile); | |
c906108c SS |
3773 | } |
3774 | (*pp)++; | |
3775 | ||
3776 | /* For some odd reason, all forms of char put a c here. This is strange | |
3777 | because no other type has this honor. We can safely ignore this because | |
3778 | we actually determine 'char'acterness by the number of bits specified in | |
3779 | the descriptor. | |
3780 | Boolean forms, e.g Fortran logical*X, put a b here. */ | |
3781 | ||
3782 | if (**pp == 'c') | |
3783 | (*pp)++; | |
3784 | else if (**pp == 'b') | |
3785 | { | |
3786 | code = TYPE_CODE_BOOL; | |
3787 | (*pp)++; | |
3788 | } | |
3789 | ||
3790 | /* The first number appears to be the number of bytes occupied | |
3791 | by this type, except that unsigned short is 4 instead of 2. | |
3792 | Since this information is redundant with the third number, | |
3793 | we will ignore it. */ | |
94e10a22 | 3794 | read_huge_number (pp, ';', &nbits, 0); |
c906108c SS |
3795 | if (nbits != 0) |
3796 | return error_type (pp, objfile); | |
3797 | ||
c378eb4e | 3798 | /* The second number is always 0, so ignore it too. */ |
94e10a22 | 3799 | read_huge_number (pp, ';', &nbits, 0); |
c906108c SS |
3800 | if (nbits != 0) |
3801 | return error_type (pp, objfile); | |
3802 | ||
c378eb4e | 3803 | /* The third number is the number of bits for this type. */ |
94e10a22 | 3804 | type_bits = read_huge_number (pp, 0, &nbits, 0); |
c906108c SS |
3805 | if (nbits != 0) |
3806 | return error_type (pp, objfile); | |
3807 | /* The type *should* end with a semicolon. If it are embedded | |
3808 | in a larger type the semicolon may be the only way to know where | |
3809 | the type ends. If this type is at the end of the stabstring we | |
3810 | can deal with the omitted semicolon (but we don't have to like | |
3811 | it). Don't bother to complain(), Sun's compiler omits the semicolon | |
3812 | for "void". */ | |
3813 | if (**pp == ';') | |
3814 | ++(*pp); | |
3815 | ||
3816 | if (type_bits == 0) | |
3817 | return init_type (TYPE_CODE_VOID, 1, | |
c5aa993b | 3818 | signed_type ? 0 : TYPE_FLAG_UNSIGNED, (char *) NULL, |
c906108c SS |
3819 | objfile); |
3820 | else | |
3821 | return init_type (code, | |
3822 | type_bits / TARGET_CHAR_BIT, | |
c5aa993b | 3823 | signed_type ? 0 : TYPE_FLAG_UNSIGNED, (char *) NULL, |
c906108c SS |
3824 | objfile); |
3825 | } | |
3826 | ||
3827 | static struct type * | |
35a2f538 | 3828 | read_sun_floating_type (char **pp, int typenums[2], struct objfile *objfile) |
c906108c SS |
3829 | { |
3830 | int nbits; | |
3831 | int details; | |
3832 | int nbytes; | |
f65ca430 | 3833 | struct type *rettype; |
c906108c SS |
3834 | |
3835 | /* The first number has more details about the type, for example | |
3836 | FN_COMPLEX. */ | |
94e10a22 | 3837 | details = read_huge_number (pp, ';', &nbits, 0); |
c906108c SS |
3838 | if (nbits != 0) |
3839 | return error_type (pp, objfile); | |
3840 | ||
c378eb4e | 3841 | /* The second number is the number of bytes occupied by this type. */ |
94e10a22 | 3842 | nbytes = read_huge_number (pp, ';', &nbits, 0); |
c906108c SS |
3843 | if (nbits != 0) |
3844 | return error_type (pp, objfile); | |
3845 | ||
3846 | if (details == NF_COMPLEX || details == NF_COMPLEX16 | |
3847 | || details == NF_COMPLEX32) | |
f65ca430 DJ |
3848 | { |
3849 | rettype = init_type (TYPE_CODE_COMPLEX, nbytes, 0, NULL, objfile); | |
3850 | TYPE_TARGET_TYPE (rettype) | |
3851 | = init_type (TYPE_CODE_FLT, nbytes / 2, 0, NULL, objfile); | |
3852 | return rettype; | |
3853 | } | |
c906108c SS |
3854 | |
3855 | return init_type (TYPE_CODE_FLT, nbytes, 0, NULL, objfile); | |
3856 | } | |
3857 | ||
3858 | /* Read a number from the string pointed to by *PP. | |
3859 | The value of *PP is advanced over the number. | |
3860 | If END is nonzero, the character that ends the | |
3861 | number must match END, or an error happens; | |
3862 | and that character is skipped if it does match. | |
3863 | If END is zero, *PP is left pointing to that character. | |
3864 | ||
94e10a22 JG |
3865 | If TWOS_COMPLEMENT_BITS is set to a strictly positive value and if |
3866 | the number is represented in an octal representation, assume that | |
3867 | it is represented in a 2's complement representation with a size of | |
3868 | TWOS_COMPLEMENT_BITS. | |
3869 | ||
c906108c SS |
3870 | If the number fits in a long, set *BITS to 0 and return the value. |
3871 | If not, set *BITS to be the number of bits in the number and return 0. | |
3872 | ||
3873 | If encounter garbage, set *BITS to -1 and return 0. */ | |
3874 | ||
c2d11a7d | 3875 | static long |
94e10a22 | 3876 | read_huge_number (char **pp, int end, int *bits, int twos_complement_bits) |
c906108c SS |
3877 | { |
3878 | char *p = *pp; | |
3879 | int sign = 1; | |
51e9e0d4 | 3880 | int sign_bit = 0; |
c2d11a7d | 3881 | long n = 0; |
c906108c SS |
3882 | int radix = 10; |
3883 | char overflow = 0; | |
3884 | int nbits = 0; | |
3885 | int c; | |
c2d11a7d | 3886 | long upper_limit; |
a2699720 | 3887 | int twos_complement_representation = 0; |
c5aa993b | 3888 | |
c906108c SS |
3889 | if (*p == '-') |
3890 | { | |
3891 | sign = -1; | |
3892 | p++; | |
3893 | } | |
3894 | ||
3895 | /* Leading zero means octal. GCC uses this to output values larger | |
3896 | than an int (because that would be hard in decimal). */ | |
3897 | if (*p == '0') | |
3898 | { | |
3899 | radix = 8; | |
3900 | p++; | |
3901 | } | |
3902 | ||
a2699720 PA |
3903 | /* Skip extra zeros. */ |
3904 | while (*p == '0') | |
3905 | p++; | |
3906 | ||
3907 | if (sign > 0 && radix == 8 && twos_complement_bits > 0) | |
3908 | { | |
3909 | /* Octal, possibly signed. Check if we have enough chars for a | |
3910 | negative number. */ | |
3911 | ||
3912 | size_t len; | |
3913 | char *p1 = p; | |
433759f7 | 3914 | |
a2699720 PA |
3915 | while ((c = *p1) >= '0' && c < '8') |
3916 | p1++; | |
3917 | ||
3918 | len = p1 - p; | |
3919 | if (len > twos_complement_bits / 3 | |
3e43a32a MS |
3920 | || (twos_complement_bits % 3 == 0 |
3921 | && len == twos_complement_bits / 3)) | |
a2699720 PA |
3922 | { |
3923 | /* Ok, we have enough characters for a signed value, check | |
3924 | for signness by testing if the sign bit is set. */ | |
3925 | sign_bit = (twos_complement_bits % 3 + 2) % 3; | |
3926 | c = *p - '0'; | |
3927 | if (c & (1 << sign_bit)) | |
3928 | { | |
3929 | /* Definitely signed. */ | |
3930 | twos_complement_representation = 1; | |
3931 | sign = -1; | |
3932 | } | |
3933 | } | |
3934 | } | |
3935 | ||
1b831c93 | 3936 | upper_limit = LONG_MAX / radix; |
c906108c SS |
3937 | |
3938 | while ((c = *p++) >= '0' && c < ('0' + radix)) | |
3939 | { | |
3940 | if (n <= upper_limit) | |
94e10a22 JG |
3941 | { |
3942 | if (twos_complement_representation) | |
3943 | { | |
a2699720 PA |
3944 | /* Octal, signed, twos complement representation. In |
3945 | this case, n is the corresponding absolute value. */ | |
3946 | if (n == 0) | |
3947 | { | |
3948 | long sn = c - '0' - ((2 * (c - '0')) | (2 << sign_bit)); | |
433759f7 | 3949 | |
a2699720 PA |
3950 | n = -sn; |
3951 | } | |
94e10a22 JG |
3952 | else |
3953 | { | |
a2699720 PA |
3954 | n *= radix; |
3955 | n -= c - '0'; | |
94e10a22 | 3956 | } |
94e10a22 JG |
3957 | } |
3958 | else | |
3959 | { | |
3960 | /* unsigned representation */ | |
3961 | n *= radix; | |
c378eb4e | 3962 | n += c - '0'; /* FIXME this overflows anyway. */ |
94e10a22 JG |
3963 | } |
3964 | } | |
c906108c | 3965 | else |
94e10a22 | 3966 | overflow = 1; |
c5aa993b | 3967 | |
c906108c | 3968 | /* This depends on large values being output in octal, which is |
c378eb4e | 3969 | what GCC does. */ |
c906108c SS |
3970 | if (radix == 8) |
3971 | { | |
3972 | if (nbits == 0) | |
3973 | { | |
3974 | if (c == '0') | |
3975 | /* Ignore leading zeroes. */ | |
3976 | ; | |
3977 | else if (c == '1') | |
3978 | nbits = 1; | |
3979 | else if (c == '2' || c == '3') | |
3980 | nbits = 2; | |
3981 | else | |
3982 | nbits = 3; | |
3983 | } | |
3984 | else | |
3985 | nbits += 3; | |
3986 | } | |
3987 | } | |
3988 | if (end) | |
3989 | { | |
3990 | if (c && c != end) | |
3991 | { | |
3992 | if (bits != NULL) | |
3993 | *bits = -1; | |
3994 | return 0; | |
3995 | } | |
3996 | } | |
3997 | else | |
3998 | --p; | |
3999 | ||
a2699720 PA |
4000 | if (radix == 8 && twos_complement_bits > 0 && nbits > twos_complement_bits) |
4001 | { | |
4002 | /* We were supposed to parse a number with maximum | |
4003 | TWOS_COMPLEMENT_BITS bits, but something went wrong. */ | |
4004 | if (bits != NULL) | |
4005 | *bits = -1; | |
4006 | return 0; | |
4007 | } | |
4008 | ||
c906108c SS |
4009 | *pp = p; |
4010 | if (overflow) | |
4011 | { | |
4012 | if (nbits == 0) | |
4013 | { | |
4014 | /* Large decimal constants are an error (because it is hard to | |
4015 | count how many bits are in them). */ | |
4016 | if (bits != NULL) | |
4017 | *bits = -1; | |
4018 | return 0; | |
4019 | } | |
c5aa993b | 4020 | |
c906108c | 4021 | /* -0x7f is the same as 0x80. So deal with it by adding one to |
a2699720 PA |
4022 | the number of bits. Two's complement represention octals |
4023 | can't have a '-' in front. */ | |
4024 | if (sign == -1 && !twos_complement_representation) | |
c906108c SS |
4025 | ++nbits; |
4026 | if (bits) | |
4027 | *bits = nbits; | |
4028 | } | |
4029 | else | |
4030 | { | |
4031 | if (bits) | |
4032 | *bits = 0; | |
a2699720 | 4033 | return n * sign; |
c906108c SS |
4034 | } |
4035 | /* It's *BITS which has the interesting information. */ | |
4036 | return 0; | |
4037 | } | |
4038 | ||
4039 | static struct type * | |
94e10a22 JG |
4040 | read_range_type (char **pp, int typenums[2], int type_size, |
4041 | struct objfile *objfile) | |
c906108c | 4042 | { |
5e2b427d | 4043 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
4044 | char *orig_pp = *pp; |
4045 | int rangenums[2]; | |
c2d11a7d | 4046 | long n2, n3; |
c906108c SS |
4047 | int n2bits, n3bits; |
4048 | int self_subrange; | |
4049 | struct type *result_type; | |
4050 | struct type *index_type = NULL; | |
4051 | ||
4052 | /* First comes a type we are a subrange of. | |
4053 | In C it is usually 0, 1 or the type being defined. */ | |
4054 | if (read_type_number (pp, rangenums) != 0) | |
4055 | return error_type (pp, objfile); | |
4056 | self_subrange = (rangenums[0] == typenums[0] && | |
4057 | rangenums[1] == typenums[1]); | |
4058 | ||
4059 | if (**pp == '=') | |
4060 | { | |
4061 | *pp = orig_pp; | |
4062 | index_type = read_type (pp, objfile); | |
4063 | } | |
4064 | ||
4065 | /* A semicolon should now follow; skip it. */ | |
4066 | if (**pp == ';') | |
4067 | (*pp)++; | |
4068 | ||
4069 | /* The remaining two operands are usually lower and upper bounds | |
4070 | of the range. But in some special cases they mean something else. */ | |
94e10a22 JG |
4071 | n2 = read_huge_number (pp, ';', &n2bits, type_size); |
4072 | n3 = read_huge_number (pp, ';', &n3bits, type_size); | |
c906108c SS |
4073 | |
4074 | if (n2bits == -1 || n3bits == -1) | |
4075 | return error_type (pp, objfile); | |
4076 | ||
4077 | if (index_type) | |
4078 | goto handle_true_range; | |
4079 | ||
4080 | /* If limits are huge, must be large integral type. */ | |
4081 | if (n2bits != 0 || n3bits != 0) | |
4082 | { | |
4083 | char got_signed = 0; | |
4084 | char got_unsigned = 0; | |
4085 | /* Number of bits in the type. */ | |
4086 | int nbits = 0; | |
4087 | ||
94e10a22 | 4088 | /* If a type size attribute has been specified, the bounds of |
c378eb4e | 4089 | the range should fit in this size. If the lower bounds needs |
94e10a22 JG |
4090 | more bits than the upper bound, then the type is signed. */ |
4091 | if (n2bits <= type_size && n3bits <= type_size) | |
4092 | { | |
4093 | if (n2bits == type_size && n2bits > n3bits) | |
4094 | got_signed = 1; | |
4095 | else | |
4096 | got_unsigned = 1; | |
4097 | nbits = type_size; | |
4098 | } | |
c906108c | 4099 | /* Range from 0 to <large number> is an unsigned large integral type. */ |
94e10a22 | 4100 | else if ((n2bits == 0 && n2 == 0) && n3bits != 0) |
c906108c SS |
4101 | { |
4102 | got_unsigned = 1; | |
4103 | nbits = n3bits; | |
4104 | } | |
4105 | /* Range from <large number> to <large number>-1 is a large signed | |
c5aa993b JM |
4106 | integral type. Take care of the case where <large number> doesn't |
4107 | fit in a long but <large number>-1 does. */ | |
c906108c SS |
4108 | else if ((n2bits != 0 && n3bits != 0 && n2bits == n3bits + 1) |
4109 | || (n2bits != 0 && n3bits == 0 | |
c2d11a7d JM |
4110 | && (n2bits == sizeof (long) * HOST_CHAR_BIT) |
4111 | && n3 == LONG_MAX)) | |
c906108c SS |
4112 | { |
4113 | got_signed = 1; | |
4114 | nbits = n2bits; | |
4115 | } | |
4116 | ||
4117 | if (got_signed || got_unsigned) | |
4118 | { | |
4119 | return init_type (TYPE_CODE_INT, nbits / TARGET_CHAR_BIT, | |
4120 | got_unsigned ? TYPE_FLAG_UNSIGNED : 0, NULL, | |
4121 | objfile); | |
4122 | } | |
4123 | else | |
4124 | return error_type (pp, objfile); | |
4125 | } | |
4126 | ||
4127 | /* A type defined as a subrange of itself, with bounds both 0, is void. */ | |
4128 | if (self_subrange && n2 == 0 && n3 == 0) | |
4129 | return init_type (TYPE_CODE_VOID, 1, 0, NULL, objfile); | |
4130 | ||
4131 | /* If n3 is zero and n2 is positive, we want a floating type, and n2 | |
4132 | is the width in bytes. | |
4133 | ||
4134 | Fortran programs appear to use this for complex types also. To | |
4135 | distinguish between floats and complex, g77 (and others?) seem | |
4136 | to use self-subranges for the complexes, and subranges of int for | |
4137 | the floats. | |
4138 | ||
4139 | Also note that for complexes, g77 sets n2 to the size of one of | |
4140 | the member floats, not the whole complex beast. My guess is that | |
c378eb4e | 4141 | this was to work well with pre-COMPLEX versions of gdb. */ |
c906108c SS |
4142 | |
4143 | if (n3 == 0 && n2 > 0) | |
4144 | { | |
1300f5dd JB |
4145 | struct type *float_type |
4146 | = init_type (TYPE_CODE_FLT, n2, 0, NULL, objfile); | |
4147 | ||
c906108c SS |
4148 | if (self_subrange) |
4149 | { | |
1300f5dd JB |
4150 | struct type *complex_type = |
4151 | init_type (TYPE_CODE_COMPLEX, 2 * n2, 0, NULL, objfile); | |
433759f7 | 4152 | |
1300f5dd JB |
4153 | TYPE_TARGET_TYPE (complex_type) = float_type; |
4154 | return complex_type; | |
c906108c SS |
4155 | } |
4156 | else | |
1300f5dd | 4157 | return float_type; |
c906108c SS |
4158 | } |
4159 | ||
a2699720 | 4160 | /* If the upper bound is -1, it must really be an unsigned integral. */ |
c906108c SS |
4161 | |
4162 | else if (n2 == 0 && n3 == -1) | |
4163 | { | |
a2699720 | 4164 | int bits = type_size; |
433759f7 | 4165 | |
a2699720 PA |
4166 | if (bits <= 0) |
4167 | { | |
4168 | /* We don't know its size. It is unsigned int or unsigned | |
4169 | long. GCC 2.3.3 uses this for long long too, but that is | |
4170 | just a GDB 3.5 compatibility hack. */ | |
5e2b427d | 4171 | bits = gdbarch_int_bit (gdbarch); |
a2699720 PA |
4172 | } |
4173 | ||
4174 | return init_type (TYPE_CODE_INT, bits / TARGET_CHAR_BIT, | |
c906108c SS |
4175 | TYPE_FLAG_UNSIGNED, NULL, objfile); |
4176 | } | |
4177 | ||
4178 | /* Special case: char is defined (Who knows why) as a subrange of | |
4179 | itself with range 0-127. */ | |
4180 | else if (self_subrange && n2 == 0 && n3 == 127) | |
973ccf8b | 4181 | return init_type (TYPE_CODE_INT, 1, TYPE_FLAG_NOSIGN, NULL, objfile); |
c906108c | 4182 | |
c906108c SS |
4183 | /* We used to do this only for subrange of self or subrange of int. */ |
4184 | else if (n2 == 0) | |
4185 | { | |
a0b3c4fd JM |
4186 | /* -1 is used for the upper bound of (4 byte) "unsigned int" and |
4187 | "unsigned long", and we already checked for that, | |
4188 | so don't need to test for it here. */ | |
4189 | ||
c906108c SS |
4190 | if (n3 < 0) |
4191 | /* n3 actually gives the size. */ | |
c5aa993b | 4192 | return init_type (TYPE_CODE_INT, -n3, TYPE_FLAG_UNSIGNED, |
c906108c | 4193 | NULL, objfile); |
c906108c | 4194 | |
7be570e7 | 4195 | /* Is n3 == 2**(8n)-1 for some integer n? Then it's an |
a0b3c4fd JM |
4196 | unsigned n-byte integer. But do require n to be a power of |
4197 | two; we don't want 3- and 5-byte integers flying around. */ | |
4198 | { | |
4199 | int bytes; | |
4200 | unsigned long bits; | |
4201 | ||
4202 | bits = n3; | |
4203 | for (bytes = 0; (bits & 0xff) == 0xff; bytes++) | |
4204 | bits >>= 8; | |
4205 | if (bits == 0 | |
4206 | && ((bytes - 1) & bytes) == 0) /* "bytes is a power of two" */ | |
4207 | return init_type (TYPE_CODE_INT, bytes, TYPE_FLAG_UNSIGNED, NULL, | |
4208 | objfile); | |
4209 | } | |
c906108c SS |
4210 | } |
4211 | /* I think this is for Convex "long long". Since I don't know whether | |
4212 | Convex sets self_subrange, I also accept that particular size regardless | |
4213 | of self_subrange. */ | |
4214 | else if (n3 == 0 && n2 < 0 | |
4215 | && (self_subrange | |
9a76efb6 | 4216 | || n2 == -gdbarch_long_long_bit |
5e2b427d | 4217 | (gdbarch) / TARGET_CHAR_BIT)) |
c5aa993b JM |
4218 | return init_type (TYPE_CODE_INT, -n2, 0, NULL, objfile); |
4219 | else if (n2 == -n3 - 1) | |
c906108c SS |
4220 | { |
4221 | if (n3 == 0x7f) | |
4222 | return init_type (TYPE_CODE_INT, 1, 0, NULL, objfile); | |
4223 | if (n3 == 0x7fff) | |
4224 | return init_type (TYPE_CODE_INT, 2, 0, NULL, objfile); | |
4225 | if (n3 == 0x7fffffff) | |
4226 | return init_type (TYPE_CODE_INT, 4, 0, NULL, objfile); | |
4227 | } | |
4228 | ||
4229 | /* We have a real range type on our hands. Allocate space and | |
4230 | return a real pointer. */ | |
c5aa993b | 4231 | handle_true_range: |
c906108c SS |
4232 | |
4233 | if (self_subrange) | |
46bf5051 | 4234 | index_type = objfile_type (objfile)->builtin_int; |
c906108c | 4235 | else |
46bf5051 | 4236 | index_type = *dbx_lookup_type (rangenums, objfile); |
c906108c SS |
4237 | if (index_type == NULL) |
4238 | { | |
4239 | /* Does this actually ever happen? Is that why we are worrying | |
4240 | about dealing with it rather than just calling error_type? */ | |
4241 | ||
23136709 | 4242 | complaint (&symfile_complaints, |
e2e0b3e5 | 4243 | _("base type %d of range type is not defined"), rangenums[1]); |
5e2b427d | 4244 | |
46bf5051 | 4245 | index_type = objfile_type (objfile)->builtin_int; |
c906108c SS |
4246 | } |
4247 | ||
4248 | result_type = create_range_type ((struct type *) NULL, index_type, n2, n3); | |
4249 | return (result_type); | |
4250 | } | |
4251 | ||
4252 | /* Read in an argument list. This is a list of types, separated by commas | |
0a029df5 DJ |
4253 | and terminated with END. Return the list of types read in, or NULL |
4254 | if there is an error. */ | |
c906108c | 4255 | |
ad2f7632 DJ |
4256 | static struct field * |
4257 | read_args (char **pp, int end, struct objfile *objfile, int *nargsp, | |
4258 | int *varargsp) | |
c906108c SS |
4259 | { |
4260 | /* FIXME! Remove this arbitrary limit! */ | |
c378eb4e | 4261 | struct type *types[1024]; /* Allow for fns of 1023 parameters. */ |
ad2f7632 DJ |
4262 | int n = 0, i; |
4263 | struct field *rval; | |
c906108c SS |
4264 | |
4265 | while (**pp != end) | |
4266 | { | |
4267 | if (**pp != ',') | |
4268 | /* Invalid argument list: no ','. */ | |
0a029df5 | 4269 | return NULL; |
c906108c SS |
4270 | (*pp)++; |
4271 | STABS_CONTINUE (pp, objfile); | |
4272 | types[n++] = read_type (pp, objfile); | |
4273 | } | |
c378eb4e | 4274 | (*pp)++; /* get past `end' (the ':' character). */ |
c906108c | 4275 | |
d24d8548 JK |
4276 | if (n == 0) |
4277 | { | |
4278 | /* We should read at least the THIS parameter here. Some broken stabs | |
4279 | output contained `(0,41),(0,42)=@s8;-16;,(0,43),(0,1);' where should | |
4280 | have been present ";-16,(0,43)" reference instead. This way the | |
4281 | excessive ";" marker prematurely stops the parameters parsing. */ | |
4282 | ||
4283 | complaint (&symfile_complaints, _("Invalid (empty) method arguments")); | |
4284 | *varargsp = 0; | |
4285 | } | |
4286 | else if (TYPE_CODE (types[n - 1]) != TYPE_CODE_VOID) | |
ad2f7632 | 4287 | *varargsp = 1; |
c906108c SS |
4288 | else |
4289 | { | |
ad2f7632 DJ |
4290 | n--; |
4291 | *varargsp = 0; | |
c906108c | 4292 | } |
ad2f7632 DJ |
4293 | |
4294 | rval = (struct field *) xmalloc (n * sizeof (struct field)); | |
4295 | memset (rval, 0, n * sizeof (struct field)); | |
4296 | for (i = 0; i < n; i++) | |
4297 | rval[i].type = types[i]; | |
4298 | *nargsp = n; | |
c906108c SS |
4299 | return rval; |
4300 | } | |
4301 | \f | |
4302 | /* Common block handling. */ | |
4303 | ||
4304 | /* List of symbols declared since the last BCOMM. This list is a tail | |
4305 | of local_symbols. When ECOMM is seen, the symbols on the list | |
4306 | are noted so their proper addresses can be filled in later, | |
4307 | using the common block base address gotten from the assembler | |
4308 | stabs. */ | |
4309 | ||
4310 | static struct pending *common_block; | |
4311 | static int common_block_i; | |
4312 | ||
4313 | /* Name of the current common block. We get it from the BCOMM instead of the | |
4314 | ECOMM to match IBM documentation (even though IBM puts the name both places | |
4315 | like everyone else). */ | |
4316 | static char *common_block_name; | |
4317 | ||
4318 | /* Process a N_BCOMM symbol. The storage for NAME is not guaranteed | |
4319 | to remain after this function returns. */ | |
4320 | ||
4321 | void | |
fba45db2 | 4322 | common_block_start (char *name, struct objfile *objfile) |
c906108c SS |
4323 | { |
4324 | if (common_block_name != NULL) | |
4325 | { | |
23136709 | 4326 | complaint (&symfile_complaints, |
e2e0b3e5 | 4327 | _("Invalid symbol data: common block within common block")); |
c906108c SS |
4328 | } |
4329 | common_block = local_symbols; | |
4330 | common_block_i = local_symbols ? local_symbols->nsyms : 0; | |
4331 | common_block_name = obsavestring (name, strlen (name), | |
4a146b47 | 4332 | &objfile->objfile_obstack); |
c906108c SS |
4333 | } |
4334 | ||
4335 | /* Process a N_ECOMM symbol. */ | |
4336 | ||
4337 | void | |
fba45db2 | 4338 | common_block_end (struct objfile *objfile) |
c906108c SS |
4339 | { |
4340 | /* Symbols declared since the BCOMM are to have the common block | |
4341 | start address added in when we know it. common_block and | |
4342 | common_block_i point to the first symbol after the BCOMM in | |
4343 | the local_symbols list; copy the list and hang it off the | |
4344 | symbol for the common block name for later fixup. */ | |
4345 | int i; | |
4346 | struct symbol *sym; | |
4347 | struct pending *new = 0; | |
4348 | struct pending *next; | |
4349 | int j; | |
4350 | ||
4351 | if (common_block_name == NULL) | |
4352 | { | |
e2e0b3e5 | 4353 | complaint (&symfile_complaints, _("ECOMM symbol unmatched by BCOMM")); |
c906108c SS |
4354 | return; |
4355 | } | |
4356 | ||
c5aa993b | 4357 | sym = (struct symbol *) |
4a146b47 | 4358 | obstack_alloc (&objfile->objfile_obstack, sizeof (struct symbol)); |
c906108c | 4359 | memset (sym, 0, sizeof (struct symbol)); |
c378eb4e | 4360 | /* Note: common_block_name already saved on objfile_obstack. */ |
3567439c | 4361 | SYMBOL_SET_LINKAGE_NAME (sym, common_block_name); |
c906108c SS |
4362 | SYMBOL_CLASS (sym) = LOC_BLOCK; |
4363 | ||
4364 | /* Now we copy all the symbols which have been defined since the BCOMM. */ | |
4365 | ||
4366 | /* Copy all the struct pendings before common_block. */ | |
4367 | for (next = local_symbols; | |
4368 | next != NULL && next != common_block; | |
4369 | next = next->next) | |
4370 | { | |
4371 | for (j = 0; j < next->nsyms; j++) | |
4372 | add_symbol_to_list (next->symbol[j], &new); | |
4373 | } | |
4374 | ||
4375 | /* Copy however much of COMMON_BLOCK we need. If COMMON_BLOCK is | |
4376 | NULL, it means copy all the local symbols (which we already did | |
4377 | above). */ | |
4378 | ||
4379 | if (common_block != NULL) | |
4380 | for (j = common_block_i; j < common_block->nsyms; j++) | |
4381 | add_symbol_to_list (common_block->symbol[j], &new); | |
4382 | ||
4383 | SYMBOL_TYPE (sym) = (struct type *) new; | |
4384 | ||
4385 | /* Should we be putting local_symbols back to what it was? | |
4386 | Does it matter? */ | |
4387 | ||
3567439c | 4388 | i = hashname (SYMBOL_LINKAGE_NAME (sym)); |
c906108c SS |
4389 | SYMBOL_VALUE_CHAIN (sym) = global_sym_chain[i]; |
4390 | global_sym_chain[i] = sym; | |
4391 | common_block_name = NULL; | |
4392 | } | |
4393 | ||
4394 | /* Add a common block's start address to the offset of each symbol | |
4395 | declared to be in it (by being between a BCOMM/ECOMM pair that uses | |
4396 | the common block name). */ | |
4397 | ||
4398 | static void | |
46cb6474 | 4399 | fix_common_block (struct symbol *sym, CORE_ADDR valu) |
c906108c SS |
4400 | { |
4401 | struct pending *next = (struct pending *) SYMBOL_TYPE (sym); | |
433759f7 | 4402 | |
c5aa993b | 4403 | for (; next; next = next->next) |
c906108c | 4404 | { |
aa1ee363 | 4405 | int j; |
433759f7 | 4406 | |
c906108c SS |
4407 | for (j = next->nsyms - 1; j >= 0; j--) |
4408 | SYMBOL_VALUE_ADDRESS (next->symbol[j]) += valu; | |
4409 | } | |
4410 | } | |
c5aa993b | 4411 | \f |
c906108c SS |
4412 | |
4413 | ||
bf362611 JB |
4414 | /* Add {TYPE, TYPENUMS} to the NONAME_UNDEFS vector. |
4415 | See add_undefined_type for more details. */ | |
c906108c | 4416 | |
a7a48797 | 4417 | static void |
bf362611 JB |
4418 | add_undefined_type_noname (struct type *type, int typenums[2]) |
4419 | { | |
4420 | struct nat nat; | |
4421 | ||
4422 | nat.typenums[0] = typenums [0]; | |
4423 | nat.typenums[1] = typenums [1]; | |
4424 | nat.type = type; | |
4425 | ||
4426 | if (noname_undefs_length == noname_undefs_allocated) | |
4427 | { | |
4428 | noname_undefs_allocated *= 2; | |
4429 | noname_undefs = (struct nat *) | |
4430 | xrealloc ((char *) noname_undefs, | |
4431 | noname_undefs_allocated * sizeof (struct nat)); | |
4432 | } | |
4433 | noname_undefs[noname_undefs_length++] = nat; | |
4434 | } | |
4435 | ||
4436 | /* Add TYPE to the UNDEF_TYPES vector. | |
4437 | See add_undefined_type for more details. */ | |
4438 | ||
4439 | static void | |
4440 | add_undefined_type_1 (struct type *type) | |
c906108c SS |
4441 | { |
4442 | if (undef_types_length == undef_types_allocated) | |
4443 | { | |
4444 | undef_types_allocated *= 2; | |
4445 | undef_types = (struct type **) | |
4446 | xrealloc ((char *) undef_types, | |
4447 | undef_types_allocated * sizeof (struct type *)); | |
4448 | } | |
4449 | undef_types[undef_types_length++] = type; | |
4450 | } | |
4451 | ||
bf362611 JB |
4452 | /* What about types defined as forward references inside of a small lexical |
4453 | scope? */ | |
4454 | /* Add a type to the list of undefined types to be checked through | |
4455 | once this file has been read in. | |
4456 | ||
4457 | In practice, we actually maintain two such lists: The first list | |
4458 | (UNDEF_TYPES) is used for types whose name has been provided, and | |
4459 | concerns forward references (eg 'xs' or 'xu' forward references); | |
4460 | the second list (NONAME_UNDEFS) is used for types whose name is | |
4461 | unknown at creation time, because they were referenced through | |
4462 | their type number before the actual type was declared. | |
4463 | This function actually adds the given type to the proper list. */ | |
4464 | ||
4465 | static void | |
4466 | add_undefined_type (struct type *type, int typenums[2]) | |
4467 | { | |
4468 | if (TYPE_TAG_NAME (type) == NULL) | |
4469 | add_undefined_type_noname (type, typenums); | |
4470 | else | |
4471 | add_undefined_type_1 (type); | |
4472 | } | |
4473 | ||
4474 | /* Try to fix all undefined types pushed on the UNDEF_TYPES vector. */ | |
4475 | ||
2c0b251b | 4476 | static void |
46bf5051 | 4477 | cleanup_undefined_types_noname (struct objfile *objfile) |
bf362611 JB |
4478 | { |
4479 | int i; | |
4480 | ||
4481 | for (i = 0; i < noname_undefs_length; i++) | |
4482 | { | |
4483 | struct nat nat = noname_undefs[i]; | |
4484 | struct type **type; | |
4485 | ||
46bf5051 | 4486 | type = dbx_lookup_type (nat.typenums, objfile); |
bf362611 | 4487 | if (nat.type != *type && TYPE_CODE (*type) != TYPE_CODE_UNDEF) |
56953f80 JB |
4488 | { |
4489 | /* The instance flags of the undefined type are still unset, | |
4490 | and needs to be copied over from the reference type. | |
4491 | Since replace_type expects them to be identical, we need | |
4492 | to set these flags manually before hand. */ | |
4493 | TYPE_INSTANCE_FLAGS (nat.type) = TYPE_INSTANCE_FLAGS (*type); | |
4494 | replace_type (nat.type, *type); | |
4495 | } | |
bf362611 JB |
4496 | } |
4497 | ||
4498 | noname_undefs_length = 0; | |
4499 | } | |
4500 | ||
c906108c SS |
4501 | /* Go through each undefined type, see if it's still undefined, and fix it |
4502 | up if possible. We have two kinds of undefined types: | |
4503 | ||
4504 | TYPE_CODE_ARRAY: Array whose target type wasn't defined yet. | |
c5aa993b JM |
4505 | Fix: update array length using the element bounds |
4506 | and the target type's length. | |
c906108c | 4507 | TYPE_CODE_STRUCT, TYPE_CODE_UNION: Structure whose fields were not |
c5aa993b JM |
4508 | yet defined at the time a pointer to it was made. |
4509 | Fix: Do a full lookup on the struct/union tag. */ | |
bf362611 | 4510 | |
2c0b251b | 4511 | static void |
bf362611 | 4512 | cleanup_undefined_types_1 (void) |
c906108c SS |
4513 | { |
4514 | struct type **type; | |
4515 | ||
9e386756 JB |
4516 | /* Iterate over every undefined type, and look for a symbol whose type |
4517 | matches our undefined type. The symbol matches if: | |
4518 | 1. It is a typedef in the STRUCT domain; | |
4519 | 2. It has the same name, and same type code; | |
4520 | 3. The instance flags are identical. | |
4521 | ||
4522 | It is important to check the instance flags, because we have seen | |
4523 | examples where the debug info contained definitions such as: | |
4524 | ||
4525 | "foo_t:t30=B31=xefoo_t:" | |
4526 | ||
4527 | In this case, we have created an undefined type named "foo_t" whose | |
4528 | instance flags is null (when processing "xefoo_t"), and then created | |
4529 | another type with the same name, but with different instance flags | |
4530 | ('B' means volatile). I think that the definition above is wrong, | |
4531 | since the same type cannot be volatile and non-volatile at the same | |
4532 | time, but we need to be able to cope with it when it happens. The | |
4533 | approach taken here is to treat these two types as different. */ | |
4534 | ||
c906108c SS |
4535 | for (type = undef_types; type < undef_types + undef_types_length; type++) |
4536 | { | |
4537 | switch (TYPE_CODE (*type)) | |
4538 | { | |
4539 | ||
c5aa993b JM |
4540 | case TYPE_CODE_STRUCT: |
4541 | case TYPE_CODE_UNION: | |
4542 | case TYPE_CODE_ENUM: | |
c906108c SS |
4543 | { |
4544 | /* Check if it has been defined since. Need to do this here | |
4545 | as well as in check_typedef to deal with the (legitimate in | |
4546 | C though not C++) case of several types with the same name | |
4547 | in different source files. */ | |
74a9bb82 | 4548 | if (TYPE_STUB (*type)) |
c906108c SS |
4549 | { |
4550 | struct pending *ppt; | |
4551 | int i; | |
c378eb4e | 4552 | /* Name of the type, without "struct" or "union". */ |
0d5cff50 | 4553 | const char *typename = TYPE_TAG_NAME (*type); |
c906108c SS |
4554 | |
4555 | if (typename == NULL) | |
4556 | { | |
e2e0b3e5 | 4557 | complaint (&symfile_complaints, _("need a type name")); |
c906108c SS |
4558 | break; |
4559 | } | |
4560 | for (ppt = file_symbols; ppt; ppt = ppt->next) | |
4561 | { | |
4562 | for (i = 0; i < ppt->nsyms; i++) | |
4563 | { | |
4564 | struct symbol *sym = ppt->symbol[i]; | |
c5aa993b | 4565 | |
c906108c | 4566 | if (SYMBOL_CLASS (sym) == LOC_TYPEDEF |
176620f1 | 4567 | && SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN |
c906108c SS |
4568 | && (TYPE_CODE (SYMBOL_TYPE (sym)) == |
4569 | TYPE_CODE (*type)) | |
9e386756 JB |
4570 | && (TYPE_INSTANCE_FLAGS (*type) == |
4571 | TYPE_INSTANCE_FLAGS (SYMBOL_TYPE (sym))) | |
3567439c | 4572 | && strcmp (SYMBOL_LINKAGE_NAME (sym), |
9e386756 | 4573 | typename) == 0) |
13a393b0 | 4574 | replace_type (*type, SYMBOL_TYPE (sym)); |
c906108c SS |
4575 | } |
4576 | } | |
4577 | } | |
4578 | } | |
4579 | break; | |
4580 | ||
4581 | default: | |
4582 | { | |
23136709 | 4583 | complaint (&symfile_complaints, |
e2e0b3e5 AC |
4584 | _("forward-referenced types left unresolved, " |
4585 | "type code %d."), | |
23136709 | 4586 | TYPE_CODE (*type)); |
c906108c SS |
4587 | } |
4588 | break; | |
4589 | } | |
4590 | } | |
4591 | ||
4592 | undef_types_length = 0; | |
4593 | } | |
4594 | ||
bf362611 JB |
4595 | /* Try to fix all the undefined types we ecountered while processing |
4596 | this unit. */ | |
4597 | ||
4598 | void | |
0a0edcd5 | 4599 | cleanup_undefined_stabs_types (struct objfile *objfile) |
bf362611 JB |
4600 | { |
4601 | cleanup_undefined_types_1 (); | |
46bf5051 | 4602 | cleanup_undefined_types_noname (objfile); |
bf362611 JB |
4603 | } |
4604 | ||
c906108c SS |
4605 | /* Scan through all of the global symbols defined in the object file, |
4606 | assigning values to the debugging symbols that need to be assigned | |
4607 | to. Get these symbols from the minimal symbol table. */ | |
4608 | ||
4609 | void | |
fba45db2 | 4610 | scan_file_globals (struct objfile *objfile) |
c906108c SS |
4611 | { |
4612 | int hash; | |
4613 | struct minimal_symbol *msymbol; | |
507836c0 | 4614 | struct symbol *sym, *prev; |
c906108c SS |
4615 | struct objfile *resolve_objfile; |
4616 | ||
4617 | /* SVR4 based linkers copy referenced global symbols from shared | |
4618 | libraries to the main executable. | |
4619 | If we are scanning the symbols for a shared library, try to resolve | |
4620 | them from the minimal symbols of the main executable first. */ | |
4621 | ||
4622 | if (symfile_objfile && objfile != symfile_objfile) | |
4623 | resolve_objfile = symfile_objfile; | |
4624 | else | |
4625 | resolve_objfile = objfile; | |
4626 | ||
4627 | while (1) | |
4628 | { | |
4629 | /* Avoid expensive loop through all minimal symbols if there are | |
c5aa993b | 4630 | no unresolved symbols. */ |
c906108c SS |
4631 | for (hash = 0; hash < HASHSIZE; hash++) |
4632 | { | |
4633 | if (global_sym_chain[hash]) | |
4634 | break; | |
4635 | } | |
4636 | if (hash >= HASHSIZE) | |
4637 | return; | |
4638 | ||
3567439c | 4639 | ALL_OBJFILE_MSYMBOLS (resolve_objfile, msymbol) |
c906108c SS |
4640 | { |
4641 | QUIT; | |
4642 | ||
4643 | /* Skip static symbols. */ | |
4644 | switch (MSYMBOL_TYPE (msymbol)) | |
4645 | { | |
4646 | case mst_file_text: | |
4647 | case mst_file_data: | |
4648 | case mst_file_bss: | |
4649 | continue; | |
4650 | default: | |
4651 | break; | |
4652 | } | |
4653 | ||
4654 | prev = NULL; | |
4655 | ||
4656 | /* Get the hash index and check all the symbols | |
c378eb4e | 4657 | under that hash index. */ |
c906108c | 4658 | |
3567439c | 4659 | hash = hashname (SYMBOL_LINKAGE_NAME (msymbol)); |
c906108c SS |
4660 | |
4661 | for (sym = global_sym_chain[hash]; sym;) | |
4662 | { | |
3567439c DJ |
4663 | if (strcmp (SYMBOL_LINKAGE_NAME (msymbol), |
4664 | SYMBOL_LINKAGE_NAME (sym)) == 0) | |
c906108c | 4665 | { |
c906108c | 4666 | /* Splice this symbol out of the hash chain and |
c378eb4e | 4667 | assign the value we have to it. */ |
c906108c SS |
4668 | if (prev) |
4669 | { | |
4670 | SYMBOL_VALUE_CHAIN (prev) = SYMBOL_VALUE_CHAIN (sym); | |
4671 | } | |
4672 | else | |
4673 | { | |
4674 | global_sym_chain[hash] = SYMBOL_VALUE_CHAIN (sym); | |
4675 | } | |
c5aa993b | 4676 | |
c906108c SS |
4677 | /* Check to see whether we need to fix up a common block. */ |
4678 | /* Note: this code might be executed several times for | |
4679 | the same symbol if there are multiple references. */ | |
507836c0 | 4680 | if (sym) |
c906108c | 4681 | { |
507836c0 | 4682 | if (SYMBOL_CLASS (sym) == LOC_BLOCK) |
c906108c | 4683 | { |
507836c0 | 4684 | fix_common_block (sym, |
c906108c SS |
4685 | SYMBOL_VALUE_ADDRESS (msymbol)); |
4686 | } | |
4687 | else | |
4688 | { | |
507836c0 | 4689 | SYMBOL_VALUE_ADDRESS (sym) |
c906108c SS |
4690 | = SYMBOL_VALUE_ADDRESS (msymbol); |
4691 | } | |
507836c0 | 4692 | SYMBOL_SECTION (sym) = SYMBOL_SECTION (msymbol); |
c906108c SS |
4693 | } |
4694 | ||
c906108c SS |
4695 | if (prev) |
4696 | { | |
4697 | sym = SYMBOL_VALUE_CHAIN (prev); | |
4698 | } | |
4699 | else | |
4700 | { | |
4701 | sym = global_sym_chain[hash]; | |
4702 | } | |
4703 | } | |
4704 | else | |
4705 | { | |
4706 | prev = sym; | |
4707 | sym = SYMBOL_VALUE_CHAIN (sym); | |
4708 | } | |
4709 | } | |
4710 | } | |
4711 | if (resolve_objfile == objfile) | |
4712 | break; | |
4713 | resolve_objfile = objfile; | |
4714 | } | |
4715 | ||
4716 | /* Change the storage class of any remaining unresolved globals to | |
4717 | LOC_UNRESOLVED and remove them from the chain. */ | |
4718 | for (hash = 0; hash < HASHSIZE; hash++) | |
4719 | { | |
4720 | sym = global_sym_chain[hash]; | |
4721 | while (sym) | |
4722 | { | |
4723 | prev = sym; | |
4724 | sym = SYMBOL_VALUE_CHAIN (sym); | |
4725 | ||
4726 | /* Change the symbol address from the misleading chain value | |
4727 | to address zero. */ | |
4728 | SYMBOL_VALUE_ADDRESS (prev) = 0; | |
4729 | ||
4730 | /* Complain about unresolved common block symbols. */ | |
4731 | if (SYMBOL_CLASS (prev) == LOC_STATIC) | |
4732 | SYMBOL_CLASS (prev) = LOC_UNRESOLVED; | |
4733 | else | |
23136709 | 4734 | complaint (&symfile_complaints, |
3e43a32a MS |
4735 | _("%s: common block `%s' from " |
4736 | "global_sym_chain unresolved"), | |
3567439c | 4737 | objfile->name, SYMBOL_PRINT_NAME (prev)); |
c906108c SS |
4738 | } |
4739 | } | |
4740 | memset (global_sym_chain, 0, sizeof (global_sym_chain)); | |
4741 | } | |
4742 | ||
4743 | /* Initialize anything that needs initializing when starting to read | |
4744 | a fresh piece of a symbol file, e.g. reading in the stuff corresponding | |
4745 | to a psymtab. */ | |
4746 | ||
4747 | void | |
fba45db2 | 4748 | stabsread_init (void) |
c906108c SS |
4749 | { |
4750 | } | |
4751 | ||
4752 | /* Initialize anything that needs initializing when a completely new | |
4753 | symbol file is specified (not just adding some symbols from another | |
4754 | file, e.g. a shared library). */ | |
4755 | ||
4756 | void | |
fba45db2 | 4757 | stabsread_new_init (void) |
c906108c SS |
4758 | { |
4759 | /* Empty the hash table of global syms looking for values. */ | |
4760 | memset (global_sym_chain, 0, sizeof (global_sym_chain)); | |
4761 | } | |
4762 | ||
4763 | /* Initialize anything that needs initializing at the same time as | |
c378eb4e | 4764 | start_symtab() is called. */ |
c906108c | 4765 | |
c5aa993b | 4766 | void |
fba45db2 | 4767 | start_stabs (void) |
c906108c SS |
4768 | { |
4769 | global_stabs = NULL; /* AIX COFF */ | |
4770 | /* Leave FILENUM of 0 free for builtin types and this file's types. */ | |
4771 | n_this_object_header_files = 1; | |
4772 | type_vector_length = 0; | |
4773 | type_vector = (struct type **) 0; | |
4774 | ||
4775 | /* FIXME: If common_block_name is not already NULL, we should complain(). */ | |
4776 | common_block_name = NULL; | |
c906108c SS |
4777 | } |
4778 | ||
c378eb4e | 4779 | /* Call after end_symtab(). */ |
c906108c | 4780 | |
c5aa993b | 4781 | void |
fba45db2 | 4782 | end_stabs (void) |
c906108c SS |
4783 | { |
4784 | if (type_vector) | |
4785 | { | |
b8c9b27d | 4786 | xfree (type_vector); |
c906108c SS |
4787 | } |
4788 | type_vector = 0; | |
4789 | type_vector_length = 0; | |
4790 | previous_stab_code = 0; | |
4791 | } | |
4792 | ||
4793 | void | |
fba45db2 | 4794 | finish_global_stabs (struct objfile *objfile) |
c906108c SS |
4795 | { |
4796 | if (global_stabs) | |
4797 | { | |
4798 | patch_block_stabs (global_symbols, global_stabs, objfile); | |
b8c9b27d | 4799 | xfree (global_stabs); |
c906108c SS |
4800 | global_stabs = NULL; |
4801 | } | |
4802 | } | |
4803 | ||
7e1d63ec AF |
4804 | /* Find the end of the name, delimited by a ':', but don't match |
4805 | ObjC symbols which look like -[Foo bar::]:bla. */ | |
4806 | static char * | |
4807 | find_name_end (char *name) | |
4808 | { | |
4809 | char *s = name; | |
433759f7 | 4810 | |
7e1d63ec AF |
4811 | if (s[0] == '-' || *s == '+') |
4812 | { | |
4813 | /* Must be an ObjC method symbol. */ | |
4814 | if (s[1] != '[') | |
4815 | { | |
8a3fe4f8 | 4816 | error (_("invalid symbol name \"%s\""), name); |
7e1d63ec AF |
4817 | } |
4818 | s = strchr (s, ']'); | |
4819 | if (s == NULL) | |
4820 | { | |
8a3fe4f8 | 4821 | error (_("invalid symbol name \"%s\""), name); |
7e1d63ec AF |
4822 | } |
4823 | return strchr (s, ':'); | |
4824 | } | |
4825 | else | |
4826 | { | |
4827 | return strchr (s, ':'); | |
4828 | } | |
4829 | } | |
4830 | ||
c378eb4e | 4831 | /* Initializer for this module. */ |
c906108c SS |
4832 | |
4833 | void | |
fba45db2 | 4834 | _initialize_stabsread (void) |
c906108c | 4835 | { |
46bf5051 UW |
4836 | rs6000_builtin_type_data = register_objfile_data (); |
4837 | ||
c906108c SS |
4838 | undef_types_allocated = 20; |
4839 | undef_types_length = 0; | |
4840 | undef_types = (struct type **) | |
4841 | xmalloc (undef_types_allocated * sizeof (struct type *)); | |
bf362611 JB |
4842 | |
4843 | noname_undefs_allocated = 20; | |
4844 | noname_undefs_length = 0; | |
4845 | noname_undefs = (struct nat *) | |
4846 | xmalloc (noname_undefs_allocated * sizeof (struct nat)); | |
c906108c | 4847 | } |