Commit | Line | Data |
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c906108c | 1 | /* Support routines for decoding "stabs" debugging information format. |
cf5b2f1b | 2 | |
61baf725 | 3 | Copyright (C) 1986-2017 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 | |
1736a7bd PA |
21 | the "stabs" format. This format is used by some systems that use |
22 | COFF or ELF where the stabs data is placed in a special section (as | |
23 | well as with many old systems that used the a.out object file | |
24 | format). Avoid placing any object file format specific code in | |
25 | this file. */ | |
c906108c SS |
26 | |
27 | #include "defs.h" | |
c906108c | 28 | #include "bfd.h" |
04ea0df1 | 29 | #include "gdb_obstack.h" |
c906108c SS |
30 | #include "symtab.h" |
31 | #include "gdbtypes.h" | |
32 | #include "expression.h" | |
33 | #include "symfile.h" | |
34 | #include "objfiles.h" | |
3e43a32a | 35 | #include "aout/stab_gnu.h" /* We always use GNU stabs, not native. */ |
c906108c SS |
36 | #include "libaout.h" |
37 | #include "aout/aout64.h" | |
38 | #include "gdb-stabs.h" | |
39 | #include "buildsym.h" | |
40 | #include "complaints.h" | |
41 | #include "demangle.h" | |
50f182aa | 42 | #include "gdb-demangle.h" |
c906108c | 43 | #include "language.h" |
d16aafd8 | 44 | #include "doublest.h" |
de17c821 DJ |
45 | #include "cp-abi.h" |
46 | #include "cp-support.h" | |
c906108c SS |
47 | #include <ctype.h> |
48 | ||
49 | /* Ask stabsread.h to define the vars it normally declares `extern'. */ | |
c5aa993b JM |
50 | #define EXTERN |
51 | /**/ | |
c906108c SS |
52 | #include "stabsread.h" /* Our own declarations */ |
53 | #undef EXTERN | |
54 | ||
52059ffd TT |
55 | struct nextfield |
56 | { | |
57 | struct nextfield *next; | |
58 | ||
59 | /* This is the raw visibility from the stab. It is not checked | |
60 | for being one of the visibilities we recognize, so code which | |
61 | examines this field better be able to deal. */ | |
62 | int visibility; | |
63 | ||
64 | struct field field; | |
65 | }; | |
66 | ||
67 | struct next_fnfieldlist | |
68 | { | |
69 | struct next_fnfieldlist *next; | |
70 | struct fn_fieldlist fn_fieldlist; | |
71 | }; | |
72 | ||
c906108c SS |
73 | /* The routines that read and process a complete stabs for a C struct or |
74 | C++ class pass lists of data member fields and lists of member function | |
75 | fields in an instance of a field_info structure, as defined below. | |
76 | This is part of some reorganization of low level C++ support and is | |
c378eb4e | 77 | expected to eventually go away... (FIXME) */ |
c906108c SS |
78 | |
79 | struct field_info | |
c5aa993b | 80 | { |
52059ffd TT |
81 | struct nextfield *list; |
82 | struct next_fnfieldlist *fnlist; | |
c5aa993b | 83 | }; |
c906108c SS |
84 | |
85 | static void | |
a121b7c1 | 86 | read_one_struct_field (struct field_info *, const char **, const char *, |
a14ed312 | 87 | struct type *, struct objfile *); |
c906108c | 88 | |
a14ed312 | 89 | static struct type *dbx_alloc_type (int[2], struct objfile *); |
c906108c | 90 | |
a121b7c1 | 91 | static long read_huge_number (const char **, int, int *, int); |
c906108c | 92 | |
a121b7c1 | 93 | static struct type *error_type (const char **, struct objfile *); |
c906108c SS |
94 | |
95 | static void | |
a14ed312 KB |
96 | patch_block_stabs (struct pending *, struct pending_stabs *, |
97 | struct objfile *); | |
c906108c | 98 | |
46cb6474 | 99 | static void fix_common_block (struct symbol *, CORE_ADDR); |
c906108c | 100 | |
a121b7c1 | 101 | static int read_type_number (const char **, int *); |
c906108c | 102 | |
a121b7c1 | 103 | static struct type *read_type (const char **, struct objfile *); |
a7a48797 | 104 | |
a121b7c1 PA |
105 | static struct type *read_range_type (const char **, int[2], |
106 | int, struct objfile *); | |
c906108c | 107 | |
a121b7c1 PA |
108 | static struct type *read_sun_builtin_type (const char **, |
109 | int[2], struct objfile *); | |
c906108c | 110 | |
a121b7c1 | 111 | static struct type *read_sun_floating_type (const char **, int[2], |
a14ed312 | 112 | struct objfile *); |
c906108c | 113 | |
a121b7c1 | 114 | static struct type *read_enum_type (const char **, struct type *, struct objfile *); |
c906108c | 115 | |
46bf5051 | 116 | static struct type *rs6000_builtin_type (int, struct objfile *); |
c906108c SS |
117 | |
118 | static int | |
a121b7c1 | 119 | read_member_functions (struct field_info *, const char **, struct type *, |
a14ed312 | 120 | struct objfile *); |
c906108c SS |
121 | |
122 | static int | |
a121b7c1 | 123 | read_struct_fields (struct field_info *, const char **, struct type *, |
a14ed312 | 124 | struct objfile *); |
c906108c SS |
125 | |
126 | static int | |
a121b7c1 | 127 | read_baseclasses (struct field_info *, const char **, struct type *, |
a14ed312 | 128 | struct objfile *); |
c906108c SS |
129 | |
130 | static int | |
a121b7c1 | 131 | read_tilde_fields (struct field_info *, const char **, struct type *, |
a14ed312 | 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 | |
a121b7c1 | 139 | static struct type *read_struct_type (const char **, struct type *, |
2ae1c2d2 | 140 | enum type_code, |
a14ed312 | 141 | struct objfile *); |
c906108c | 142 | |
a121b7c1 | 143 | static struct type *read_array_type (const char **, struct type *, |
a14ed312 | 144 | struct objfile *); |
c906108c | 145 | |
a121b7c1 PA |
146 | static struct field *read_args (const char **, int, struct objfile *, |
147 | int *, int *); | |
c906108c | 148 | |
bf362611 | 149 | static void add_undefined_type (struct type *, int[2]); |
a7a48797 | 150 | |
c906108c | 151 | static int |
a121b7c1 | 152 | read_cpp_abbrev (struct field_info *, const char **, struct type *, |
a14ed312 | 153 | struct objfile *); |
c906108c | 154 | |
a121b7c1 | 155 | static const char *find_name_end (const char *name); |
7e1d63ec | 156 | |
a121b7c1 | 157 | static int process_reference (const char **string); |
c906108c | 158 | |
a14ed312 | 159 | void stabsread_clear_cache (void); |
7be570e7 | 160 | |
8343f86c DJ |
161 | static const char vptr_name[] = "_vptr$"; |
162 | static const char vb_name[] = "_vb$"; | |
c906108c | 163 | |
23136709 KB |
164 | static void |
165 | invalid_cpp_abbrev_complaint (const char *arg1) | |
166 | { | |
e2e0b3e5 | 167 | complaint (&symfile_complaints, _("invalid C++ abbreviation `%s'"), arg1); |
23136709 | 168 | } |
c906108c | 169 | |
23136709 | 170 | static void |
49b0b195 | 171 | reg_value_complaint (int regnum, int num_regs, const char *sym) |
23136709 KB |
172 | { |
173 | complaint (&symfile_complaints, | |
0fde2c53 | 174 | _("bad register number %d (max %d) in symbol %s"), |
49b0b195 | 175 | regnum, num_regs - 1, sym); |
23136709 | 176 | } |
c906108c | 177 | |
23136709 KB |
178 | static void |
179 | stabs_general_complaint (const char *arg1) | |
180 | { | |
181 | complaint (&symfile_complaints, "%s", arg1); | |
182 | } | |
c906108c | 183 | |
c906108c SS |
184 | /* Make a list of forward references which haven't been defined. */ |
185 | ||
186 | static struct type **undef_types; | |
187 | static int undef_types_allocated; | |
188 | static int undef_types_length; | |
189 | static struct symbol *current_symbol = NULL; | |
190 | ||
bf362611 JB |
191 | /* Make a list of nameless types that are undefined. |
192 | This happens when another type is referenced by its number | |
c378eb4e | 193 | before this type is actually defined. For instance "t(0,1)=k(0,2)" |
bf362611 JB |
194 | and type (0,2) is defined only later. */ |
195 | ||
196 | struct nat | |
197 | { | |
198 | int typenums[2]; | |
199 | struct type *type; | |
200 | }; | |
201 | static struct nat *noname_undefs; | |
202 | static int noname_undefs_allocated; | |
203 | static int noname_undefs_length; | |
204 | ||
c906108c SS |
205 | /* Check for and handle cretinous stabs symbol name continuation! */ |
206 | #define STABS_CONTINUE(pp,objfile) \ | |
207 | do { \ | |
208 | if (**(pp) == '\\' || (**(pp) == '?' && (*(pp))[1] == '\0')) \ | |
209 | *(pp) = next_symbol_text (objfile); \ | |
210 | } while (0) | |
fc474241 DE |
211 | |
212 | /* Vector of types defined so far, indexed by their type numbers. | |
213 | (In newer sun systems, dbx uses a pair of numbers in parens, | |
214 | as in "(SUBFILENUM,NUMWITHINSUBFILE)". | |
215 | Then these numbers must be translated through the type_translations | |
216 | hash table to get the index into the type vector.) */ | |
217 | ||
218 | static struct type **type_vector; | |
219 | ||
220 | /* Number of elements allocated for type_vector currently. */ | |
221 | ||
222 | static int type_vector_length; | |
223 | ||
224 | /* Initial size of type vector. Is realloc'd larger if needed, and | |
225 | realloc'd down to the size actually used, when completed. */ | |
226 | ||
227 | #define INITIAL_TYPE_VECTOR_LENGTH 160 | |
c906108c | 228 | \f |
c906108c SS |
229 | |
230 | /* Look up a dbx type-number pair. Return the address of the slot | |
231 | where the type for that number-pair is stored. | |
232 | The number-pair is in TYPENUMS. | |
233 | ||
234 | This can be used for finding the type associated with that pair | |
235 | or for associating a new type with the pair. */ | |
236 | ||
a7a48797 | 237 | static struct type ** |
46bf5051 | 238 | dbx_lookup_type (int typenums[2], struct objfile *objfile) |
c906108c | 239 | { |
52f0bd74 AC |
240 | int filenum = typenums[0]; |
241 | int index = typenums[1]; | |
c906108c | 242 | unsigned old_len; |
52f0bd74 AC |
243 | int real_filenum; |
244 | struct header_file *f; | |
c906108c SS |
245 | int f_orig_length; |
246 | ||
247 | if (filenum == -1) /* -1,-1 is for temporary types. */ | |
248 | return 0; | |
249 | ||
250 | if (filenum < 0 || filenum >= n_this_object_header_files) | |
251 | { | |
23136709 | 252 | complaint (&symfile_complaints, |
3e43a32a MS |
253 | _("Invalid symbol data: type number " |
254 | "(%d,%d) out of range at symtab pos %d."), | |
23136709 | 255 | filenum, index, symnum); |
c906108c SS |
256 | goto error_return; |
257 | } | |
258 | ||
259 | if (filenum == 0) | |
260 | { | |
261 | if (index < 0) | |
262 | { | |
263 | /* Caller wants address of address of type. We think | |
264 | that negative (rs6k builtin) types will never appear as | |
265 | "lvalues", (nor should they), so we stuff the real type | |
266 | pointer into a temp, and return its address. If referenced, | |
267 | this will do the right thing. */ | |
268 | static struct type *temp_type; | |
269 | ||
46bf5051 | 270 | temp_type = rs6000_builtin_type (index, objfile); |
c906108c SS |
271 | return &temp_type; |
272 | } | |
273 | ||
274 | /* Type is defined outside of header files. | |
c5aa993b | 275 | Find it in this object file's type vector. */ |
c906108c SS |
276 | if (index >= type_vector_length) |
277 | { | |
278 | old_len = type_vector_length; | |
279 | if (old_len == 0) | |
280 | { | |
281 | type_vector_length = INITIAL_TYPE_VECTOR_LENGTH; | |
8d749320 | 282 | type_vector = XNEWVEC (struct type *, type_vector_length); |
c906108c SS |
283 | } |
284 | while (index >= type_vector_length) | |
285 | { | |
286 | type_vector_length *= 2; | |
287 | } | |
288 | type_vector = (struct type **) | |
289 | xrealloc ((char *) type_vector, | |
290 | (type_vector_length * sizeof (struct type *))); | |
291 | memset (&type_vector[old_len], 0, | |
292 | (type_vector_length - old_len) * sizeof (struct type *)); | |
c906108c SS |
293 | } |
294 | return (&type_vector[index]); | |
295 | } | |
296 | else | |
297 | { | |
298 | real_filenum = this_object_header_files[filenum]; | |
299 | ||
46bf5051 | 300 | if (real_filenum >= N_HEADER_FILES (objfile)) |
c906108c | 301 | { |
46bf5051 | 302 | static struct type *temp_type; |
c906108c | 303 | |
8a3fe4f8 | 304 | warning (_("GDB internal error: bad real_filenum")); |
c906108c SS |
305 | |
306 | error_return: | |
46bf5051 UW |
307 | temp_type = objfile_type (objfile)->builtin_error; |
308 | return &temp_type; | |
c906108c SS |
309 | } |
310 | ||
46bf5051 | 311 | f = HEADER_FILES (objfile) + real_filenum; |
c906108c SS |
312 | |
313 | f_orig_length = f->length; | |
314 | if (index >= f_orig_length) | |
315 | { | |
316 | while (index >= f->length) | |
317 | { | |
318 | f->length *= 2; | |
319 | } | |
320 | f->vector = (struct type **) | |
321 | xrealloc ((char *) f->vector, f->length * sizeof (struct type *)); | |
322 | memset (&f->vector[f_orig_length], 0, | |
323 | (f->length - f_orig_length) * sizeof (struct type *)); | |
324 | } | |
325 | return (&f->vector[index]); | |
326 | } | |
327 | } | |
328 | ||
329 | /* Make sure there is a type allocated for type numbers TYPENUMS | |
330 | and return the type object. | |
331 | This can create an empty (zeroed) type object. | |
332 | TYPENUMS may be (-1, -1) to return a new type object that is not | |
c378eb4e | 333 | put into the type vector, and so may not be referred to by number. */ |
c906108c SS |
334 | |
335 | static struct type * | |
35a2f538 | 336 | dbx_alloc_type (int typenums[2], struct objfile *objfile) |
c906108c | 337 | { |
52f0bd74 | 338 | struct type **type_addr; |
c906108c SS |
339 | |
340 | if (typenums[0] == -1) | |
341 | { | |
342 | return (alloc_type (objfile)); | |
343 | } | |
344 | ||
46bf5051 | 345 | type_addr = dbx_lookup_type (typenums, objfile); |
c906108c SS |
346 | |
347 | /* If we are referring to a type not known at all yet, | |
348 | allocate an empty type for it. | |
349 | We will fill it in later if we find out how. */ | |
350 | if (*type_addr == 0) | |
351 | { | |
352 | *type_addr = alloc_type (objfile); | |
353 | } | |
354 | ||
355 | return (*type_addr); | |
356 | } | |
357 | ||
9b790ce7 UW |
358 | /* Allocate a floating-point type of size BITS. */ |
359 | ||
360 | static struct type * | |
361 | dbx_init_float_type (struct objfile *objfile, int bits) | |
362 | { | |
363 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
364 | const struct floatformat **format; | |
365 | struct type *type; | |
366 | ||
367 | format = gdbarch_floatformat_for_type (gdbarch, NULL, bits); | |
368 | if (format) | |
369 | type = init_float_type (objfile, bits, NULL, format); | |
370 | else | |
77b7c781 | 371 | type = init_type (objfile, TYPE_CODE_ERROR, bits, NULL); |
9b790ce7 UW |
372 | |
373 | return type; | |
374 | } | |
375 | ||
c906108c | 376 | /* for all the stabs in a given stab vector, build appropriate types |
c378eb4e | 377 | and fix their symbols in given symbol vector. */ |
c906108c SS |
378 | |
379 | static void | |
fba45db2 KB |
380 | patch_block_stabs (struct pending *symbols, struct pending_stabs *stabs, |
381 | struct objfile *objfile) | |
c906108c SS |
382 | { |
383 | int ii; | |
384 | char *name; | |
a121b7c1 | 385 | const char *pp; |
c906108c SS |
386 | struct symbol *sym; |
387 | ||
388 | if (stabs) | |
389 | { | |
c906108c | 390 | /* for all the stab entries, find their corresponding symbols and |
c378eb4e | 391 | patch their types! */ |
c5aa993b | 392 | |
c906108c SS |
393 | for (ii = 0; ii < stabs->count; ++ii) |
394 | { | |
395 | name = stabs->stab[ii]; | |
c5aa993b | 396 | pp = (char *) strchr (name, ':'); |
8fb822e0 | 397 | gdb_assert (pp); /* Must find a ':' or game's over. */ |
c906108c SS |
398 | while (pp[1] == ':') |
399 | { | |
c5aa993b JM |
400 | pp += 2; |
401 | pp = (char *) strchr (pp, ':'); | |
c906108c | 402 | } |
c5aa993b | 403 | sym = find_symbol_in_list (symbols, name, pp - name); |
c906108c SS |
404 | if (!sym) |
405 | { | |
406 | /* FIXME-maybe: it would be nice if we noticed whether | |
c5aa993b JM |
407 | the variable was defined *anywhere*, not just whether |
408 | it is defined in this compilation unit. But neither | |
409 | xlc or GCC seem to need such a definition, and until | |
410 | we do psymtabs (so that the minimal symbols from all | |
411 | compilation units are available now), I'm not sure | |
412 | how to get the information. */ | |
c906108c SS |
413 | |
414 | /* On xcoff, if a global is defined and never referenced, | |
c5aa993b JM |
415 | ld will remove it from the executable. There is then |
416 | a N_GSYM stab for it, but no regular (C_EXT) symbol. */ | |
e623cf5d | 417 | sym = allocate_symbol (objfile); |
176620f1 | 418 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
f1e6e072 | 419 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
3567439c | 420 | SYMBOL_SET_LINKAGE_NAME |
224c3ddb SM |
421 | (sym, (char *) obstack_copy0 (&objfile->objfile_obstack, |
422 | name, pp - name)); | |
c906108c | 423 | pp += 2; |
c5aa993b | 424 | if (*(pp - 1) == 'F' || *(pp - 1) == 'f') |
c906108c SS |
425 | { |
426 | /* I don't think the linker does this with functions, | |
427 | so as far as I know this is never executed. | |
428 | But it doesn't hurt to check. */ | |
429 | SYMBOL_TYPE (sym) = | |
430 | lookup_function_type (read_type (&pp, objfile)); | |
431 | } | |
432 | else | |
433 | { | |
434 | SYMBOL_TYPE (sym) = read_type (&pp, objfile); | |
435 | } | |
436 | add_symbol_to_list (sym, &global_symbols); | |
437 | } | |
438 | else | |
439 | { | |
440 | pp += 2; | |
c5aa993b | 441 | if (*(pp - 1) == 'F' || *(pp - 1) == 'f') |
c906108c SS |
442 | { |
443 | SYMBOL_TYPE (sym) = | |
444 | lookup_function_type (read_type (&pp, objfile)); | |
445 | } | |
446 | else | |
447 | { | |
448 | SYMBOL_TYPE (sym) = read_type (&pp, objfile); | |
449 | } | |
450 | } | |
451 | } | |
452 | } | |
453 | } | |
c906108c | 454 | \f |
c5aa993b | 455 | |
c906108c SS |
456 | /* Read a number by which a type is referred to in dbx data, |
457 | or perhaps read a pair (FILENUM, TYPENUM) in parentheses. | |
458 | Just a single number N is equivalent to (0,N). | |
459 | Return the two numbers by storing them in the vector TYPENUMS. | |
460 | TYPENUMS will then be used as an argument to dbx_lookup_type. | |
461 | ||
462 | Returns 0 for success, -1 for error. */ | |
463 | ||
464 | static int | |
a121b7c1 | 465 | read_type_number (const char **pp, int *typenums) |
c906108c SS |
466 | { |
467 | int nbits; | |
433759f7 | 468 | |
c906108c SS |
469 | if (**pp == '(') |
470 | { | |
471 | (*pp)++; | |
94e10a22 | 472 | typenums[0] = read_huge_number (pp, ',', &nbits, 0); |
c5aa993b JM |
473 | if (nbits != 0) |
474 | return -1; | |
94e10a22 | 475 | typenums[1] = read_huge_number (pp, ')', &nbits, 0); |
c5aa993b JM |
476 | if (nbits != 0) |
477 | return -1; | |
c906108c SS |
478 | } |
479 | else | |
480 | { | |
481 | typenums[0] = 0; | |
94e10a22 | 482 | typenums[1] = read_huge_number (pp, 0, &nbits, 0); |
c5aa993b JM |
483 | if (nbits != 0) |
484 | return -1; | |
c906108c SS |
485 | } |
486 | return 0; | |
487 | } | |
c906108c | 488 | \f |
c5aa993b | 489 | |
c906108c SS |
490 | #define VISIBILITY_PRIVATE '0' /* Stabs character for private field */ |
491 | #define VISIBILITY_PROTECTED '1' /* Stabs character for protected fld */ | |
492 | #define VISIBILITY_PUBLIC '2' /* Stabs character for public field */ | |
493 | #define VISIBILITY_IGNORE '9' /* Optimized out or zero length */ | |
494 | ||
c906108c | 495 | /* Structure for storing pointers to reference definitions for fast lookup |
c378eb4e | 496 | during "process_later". */ |
c906108c SS |
497 | |
498 | struct ref_map | |
499 | { | |
a121b7c1 | 500 | const char *stabs; |
c906108c SS |
501 | CORE_ADDR value; |
502 | struct symbol *sym; | |
503 | }; | |
504 | ||
505 | #define MAX_CHUNK_REFS 100 | |
506 | #define REF_CHUNK_SIZE (MAX_CHUNK_REFS * sizeof (struct ref_map)) | |
507 | #define REF_MAP_SIZE(ref_chunk) ((ref_chunk) * REF_CHUNK_SIZE) | |
508 | ||
c5aa993b | 509 | static struct ref_map *ref_map; |
c906108c | 510 | |
c378eb4e | 511 | /* Ptr to free cell in chunk's linked list. */ |
c5aa993b | 512 | static int ref_count = 0; |
c906108c | 513 | |
c378eb4e | 514 | /* Number of chunks malloced. */ |
c906108c SS |
515 | static int ref_chunk = 0; |
516 | ||
7be570e7 | 517 | /* This file maintains a cache of stabs aliases found in the symbol |
c378eb4e MS |
518 | table. If the symbol table changes, this cache must be cleared |
519 | or we are left holding onto data in invalid obstacks. */ | |
7be570e7 | 520 | void |
fba45db2 | 521 | stabsread_clear_cache (void) |
7be570e7 JM |
522 | { |
523 | ref_count = 0; | |
524 | ref_chunk = 0; | |
525 | } | |
526 | ||
c906108c SS |
527 | /* Create array of pointers mapping refids to symbols and stab strings. |
528 | Add pointers to reference definition symbols and/or their values as we | |
c378eb4e MS |
529 | find them, using their reference numbers as our index. |
530 | These will be used later when we resolve references. */ | |
c906108c | 531 | void |
a121b7c1 | 532 | ref_add (int refnum, struct symbol *sym, const char *stabs, CORE_ADDR value) |
c906108c SS |
533 | { |
534 | if (ref_count == 0) | |
535 | ref_chunk = 0; | |
536 | if (refnum >= ref_count) | |
537 | ref_count = refnum + 1; | |
538 | if (ref_count > ref_chunk * MAX_CHUNK_REFS) | |
539 | { | |
c5aa993b | 540 | int new_slots = ref_count - ref_chunk * MAX_CHUNK_REFS; |
c906108c | 541 | int new_chunks = new_slots / MAX_CHUNK_REFS + 1; |
433759f7 | 542 | |
c906108c SS |
543 | ref_map = (struct ref_map *) |
544 | xrealloc (ref_map, REF_MAP_SIZE (ref_chunk + new_chunks)); | |
433759f7 MS |
545 | memset (ref_map + ref_chunk * MAX_CHUNK_REFS, 0, |
546 | new_chunks * REF_CHUNK_SIZE); | |
c906108c SS |
547 | ref_chunk += new_chunks; |
548 | } | |
549 | ref_map[refnum].stabs = stabs; | |
550 | ref_map[refnum].sym = sym; | |
551 | ref_map[refnum].value = value; | |
552 | } | |
553 | ||
554 | /* Return defined sym for the reference REFNUM. */ | |
555 | struct symbol * | |
fba45db2 | 556 | ref_search (int refnum) |
c906108c SS |
557 | { |
558 | if (refnum < 0 || refnum > ref_count) | |
559 | return 0; | |
560 | return ref_map[refnum].sym; | |
561 | } | |
562 | ||
c906108c SS |
563 | /* Parse a reference id in STRING and return the resulting |
564 | reference number. Move STRING beyond the reference id. */ | |
565 | ||
c5aa993b | 566 | static int |
a121b7c1 | 567 | process_reference (const char **string) |
c906108c | 568 | { |
a121b7c1 | 569 | const char *p; |
c906108c SS |
570 | int refnum = 0; |
571 | ||
c5aa993b JM |
572 | if (**string != '#') |
573 | return 0; | |
574 | ||
c906108c SS |
575 | /* Advance beyond the initial '#'. */ |
576 | p = *string + 1; | |
577 | ||
c378eb4e | 578 | /* Read number as reference id. */ |
c906108c SS |
579 | while (*p && isdigit (*p)) |
580 | { | |
581 | refnum = refnum * 10 + *p - '0'; | |
582 | p++; | |
583 | } | |
584 | *string = p; | |
585 | return refnum; | |
586 | } | |
587 | ||
588 | /* If STRING defines a reference, store away a pointer to the reference | |
589 | definition for later use. Return the reference number. */ | |
590 | ||
591 | int | |
a121b7c1 | 592 | symbol_reference_defined (const char **string) |
c906108c | 593 | { |
a121b7c1 | 594 | const char *p = *string; |
c906108c SS |
595 | int refnum = 0; |
596 | ||
597 | refnum = process_reference (&p); | |
598 | ||
c378eb4e | 599 | /* Defining symbols end in '='. */ |
c5aa993b | 600 | if (*p == '=') |
c906108c | 601 | { |
c378eb4e | 602 | /* Symbol is being defined here. */ |
c906108c SS |
603 | *string = p + 1; |
604 | return refnum; | |
605 | } | |
606 | else | |
607 | { | |
c378eb4e | 608 | /* Must be a reference. Either the symbol has already been defined, |
c906108c SS |
609 | or this is a forward reference to it. */ |
610 | *string = p; | |
611 | return -1; | |
612 | } | |
613 | } | |
614 | ||
768a979c UW |
615 | static int |
616 | stab_reg_to_regnum (struct symbol *sym, struct gdbarch *gdbarch) | |
617 | { | |
618 | int regno = gdbarch_stab_reg_to_regnum (gdbarch, SYMBOL_VALUE (sym)); | |
619 | ||
0fde2c53 DE |
620 | if (regno < 0 |
621 | || regno >= (gdbarch_num_regs (gdbarch) | |
622 | + gdbarch_num_pseudo_regs (gdbarch))) | |
768a979c UW |
623 | { |
624 | reg_value_complaint (regno, | |
625 | gdbarch_num_regs (gdbarch) | |
626 | + gdbarch_num_pseudo_regs (gdbarch), | |
627 | SYMBOL_PRINT_NAME (sym)); | |
628 | ||
c378eb4e | 629 | regno = gdbarch_sp_regnum (gdbarch); /* Known safe, though useless. */ |
768a979c UW |
630 | } |
631 | ||
632 | return regno; | |
633 | } | |
634 | ||
635 | static const struct symbol_register_ops stab_register_funcs = { | |
636 | stab_reg_to_regnum | |
637 | }; | |
638 | ||
f1e6e072 TT |
639 | /* The "aclass" indices for computed symbols. */ |
640 | ||
641 | static int stab_register_index; | |
642 | static int stab_regparm_index; | |
643 | ||
c906108c | 644 | struct symbol * |
a121b7c1 | 645 | define_symbol (CORE_ADDR valu, const char *string, int desc, int type, |
fba45db2 | 646 | struct objfile *objfile) |
c906108c | 647 | { |
5e2b427d | 648 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
52f0bd74 | 649 | struct symbol *sym; |
a121b7c1 | 650 | const char *p = find_name_end (string); |
c906108c SS |
651 | int deftype; |
652 | int synonym = 0; | |
52f0bd74 | 653 | int i; |
c906108c SS |
654 | |
655 | /* We would like to eliminate nameless symbols, but keep their types. | |
656 | E.g. stab entry ":t10=*2" should produce a type 10, which is a pointer | |
c378eb4e MS |
657 | to type 2, but, should not create a symbol to address that type. Since |
658 | the symbol will be nameless, there is no way any user can refer to it. */ | |
c906108c SS |
659 | |
660 | int nameless; | |
661 | ||
662 | /* Ignore syms with empty names. */ | |
663 | if (string[0] == 0) | |
664 | return 0; | |
665 | ||
c378eb4e | 666 | /* Ignore old-style symbols from cc -go. */ |
c906108c SS |
667 | if (p == 0) |
668 | return 0; | |
669 | ||
670 | while (p[1] == ':') | |
671 | { | |
c5aa993b JM |
672 | p += 2; |
673 | p = strchr (p, ':'); | |
681c238c MS |
674 | if (p == NULL) |
675 | { | |
676 | complaint (&symfile_complaints, | |
677 | _("Bad stabs string '%s'"), string); | |
678 | return NULL; | |
679 | } | |
c906108c SS |
680 | } |
681 | ||
682 | /* If a nameless stab entry, all we need is the type, not the symbol. | |
683 | e.g. ":t10=*2" or a nameless enum like " :T16=ered:0,green:1,blue:2,;" */ | |
684 | nameless = (p == string || ((string[0] == ' ') && (string[1] == ':'))); | |
685 | ||
e623cf5d | 686 | current_symbol = sym = allocate_symbol (objfile); |
c906108c | 687 | |
c906108c SS |
688 | if (processing_gcc_compilation) |
689 | { | |
690 | /* GCC 2.x puts the line number in desc. SunOS apparently puts in the | |
c5aa993b JM |
691 | number of bytes occupied by a type or object, which we ignore. */ |
692 | SYMBOL_LINE (sym) = desc; | |
c906108c SS |
693 | } |
694 | else | |
695 | { | |
c5aa993b | 696 | SYMBOL_LINE (sym) = 0; /* unknown */ |
c906108c SS |
697 | } |
698 | ||
025ac414 PM |
699 | SYMBOL_SET_LANGUAGE (sym, current_subfile->language, |
700 | &objfile->objfile_obstack); | |
701 | ||
c906108c SS |
702 | if (is_cplus_marker (string[0])) |
703 | { | |
704 | /* Special GNU C++ names. */ | |
705 | switch (string[1]) | |
706 | { | |
c5aa993b | 707 | case 't': |
1c9e8358 | 708 | SYMBOL_SET_LINKAGE_NAME (sym, "this"); |
c5aa993b | 709 | break; |
c906108c | 710 | |
c5aa993b | 711 | case 'v': /* $vtbl_ptr_type */ |
c5aa993b | 712 | goto normal; |
c906108c | 713 | |
c5aa993b | 714 | case 'e': |
1c9e8358 | 715 | SYMBOL_SET_LINKAGE_NAME (sym, "eh_throw"); |
c5aa993b | 716 | break; |
c906108c | 717 | |
c5aa993b JM |
718 | case '_': |
719 | /* This was an anonymous type that was never fixed up. */ | |
720 | goto normal; | |
c906108c | 721 | |
c5aa993b JM |
722 | case 'X': |
723 | /* SunPRO (3.0 at least) static variable encoding. */ | |
5e2b427d | 724 | if (gdbarch_static_transform_name_p (gdbarch)) |
149ad273 | 725 | goto normal; |
c378eb4e | 726 | /* ... fall through ... */ |
c906108c | 727 | |
c5aa993b | 728 | default: |
e2e0b3e5 | 729 | complaint (&symfile_complaints, _("Unknown C++ symbol name `%s'"), |
23136709 | 730 | string); |
c378eb4e | 731 | goto normal; /* Do *something* with it. */ |
c906108c SS |
732 | } |
733 | } | |
c906108c SS |
734 | else |
735 | { | |
736 | normal: | |
2f408ecb PA |
737 | std::string new_name; |
738 | ||
df8a16a1 | 739 | if (SYMBOL_LANGUAGE (sym) == language_cplus) |
71c25dea | 740 | { |
224c3ddb | 741 | char *name = (char *) alloca (p - string + 1); |
433759f7 | 742 | |
71c25dea TT |
743 | memcpy (name, string, p - string); |
744 | name[p - string] = '\0'; | |
745 | new_name = cp_canonicalize_string (name); | |
71c25dea | 746 | } |
2f408ecb | 747 | if (!new_name.empty ()) |
71c25dea | 748 | { |
2f408ecb PA |
749 | SYMBOL_SET_NAMES (sym, |
750 | new_name.c_str (), new_name.length (), | |
751 | 1, objfile); | |
71c25dea TT |
752 | } |
753 | else | |
04a679b8 | 754 | SYMBOL_SET_NAMES (sym, string, p - string, 1, objfile); |
45c58896 SW |
755 | |
756 | if (SYMBOL_LANGUAGE (sym) == language_cplus) | |
a10964d1 | 757 | cp_scan_for_anonymous_namespaces (sym, objfile); |
45c58896 | 758 | |
c906108c SS |
759 | } |
760 | p++; | |
761 | ||
762 | /* Determine the type of name being defined. */ | |
763 | #if 0 | |
764 | /* Getting GDB to correctly skip the symbol on an undefined symbol | |
765 | descriptor and not ever dump core is a very dodgy proposition if | |
766 | we do things this way. I say the acorn RISC machine can just | |
767 | fix their compiler. */ | |
768 | /* The Acorn RISC machine's compiler can put out locals that don't | |
769 | start with "234=" or "(3,4)=", so assume anything other than the | |
770 | deftypes we know how to handle is a local. */ | |
771 | if (!strchr ("cfFGpPrStTvVXCR", *p)) | |
772 | #else | |
773 | if (isdigit (*p) || *p == '(' || *p == '-') | |
774 | #endif | |
775 | deftype = 'l'; | |
776 | else | |
777 | deftype = *p++; | |
778 | ||
779 | switch (deftype) | |
780 | { | |
781 | case 'c': | |
782 | /* c is a special case, not followed by a type-number. | |
c5aa993b JM |
783 | SYMBOL:c=iVALUE for an integer constant symbol. |
784 | SYMBOL:c=rVALUE for a floating constant symbol. | |
785 | SYMBOL:c=eTYPE,INTVALUE for an enum constant symbol. | |
786 | e.g. "b:c=e6,0" for "const b = blob1" | |
787 | (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */ | |
c906108c SS |
788 | if (*p != '=') |
789 | { | |
f1e6e072 | 790 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
c906108c | 791 | SYMBOL_TYPE (sym) = error_type (&p, objfile); |
176620f1 | 792 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
793 | add_symbol_to_list (sym, &file_symbols); |
794 | return sym; | |
795 | } | |
796 | ++p; | |
797 | switch (*p++) | |
798 | { | |
799 | case 'r': | |
800 | { | |
801 | double d = atof (p); | |
4e38b386 | 802 | gdb_byte *dbl_valu; |
6ccb9162 | 803 | struct type *dbl_type; |
c906108c SS |
804 | |
805 | /* FIXME-if-picky-about-floating-accuracy: Should be using | |
806 | target arithmetic to get the value. real.c in GCC | |
807 | probably has the necessary code. */ | |
808 | ||
46bf5051 | 809 | dbl_type = objfile_type (objfile)->builtin_double; |
224c3ddb SM |
810 | dbl_valu |
811 | = (gdb_byte *) obstack_alloc (&objfile->objfile_obstack, | |
812 | TYPE_LENGTH (dbl_type)); | |
6ccb9162 UW |
813 | store_typed_floating (dbl_valu, dbl_type, d); |
814 | ||
815 | SYMBOL_TYPE (sym) = dbl_type; | |
c906108c | 816 | SYMBOL_VALUE_BYTES (sym) = dbl_valu; |
f1e6e072 | 817 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST_BYTES; |
c906108c SS |
818 | } |
819 | break; | |
820 | case 'i': | |
821 | { | |
822 | /* Defining integer constants this way is kind of silly, | |
823 | since 'e' constants allows the compiler to give not | |
824 | only the value, but the type as well. C has at least | |
825 | int, long, unsigned int, and long long as constant | |
826 | types; other languages probably should have at least | |
827 | unsigned as well as signed constants. */ | |
828 | ||
46bf5051 | 829 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_long; |
c906108c | 830 | SYMBOL_VALUE (sym) = atoi (p); |
f1e6e072 | 831 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
c906108c SS |
832 | } |
833 | break; | |
ec8a089a PM |
834 | |
835 | case 'c': | |
836 | { | |
837 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_char; | |
838 | SYMBOL_VALUE (sym) = atoi (p); | |
f1e6e072 | 839 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
ec8a089a PM |
840 | } |
841 | break; | |
842 | ||
843 | case 's': | |
844 | { | |
845 | struct type *range_type; | |
846 | int ind = 0; | |
847 | char quote = *p++; | |
ec8a089a PM |
848 | gdb_byte *string_local = (gdb_byte *) alloca (strlen (p)); |
849 | gdb_byte *string_value; | |
850 | ||
851 | if (quote != '\'' && quote != '"') | |
852 | { | |
f1e6e072 | 853 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
ec8a089a PM |
854 | SYMBOL_TYPE (sym) = error_type (&p, objfile); |
855 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; | |
856 | add_symbol_to_list (sym, &file_symbols); | |
857 | return sym; | |
858 | } | |
859 | ||
860 | /* Find matching quote, rejecting escaped quotes. */ | |
861 | while (*p && *p != quote) | |
862 | { | |
863 | if (*p == '\\' && p[1] == quote) | |
864 | { | |
865 | string_local[ind] = (gdb_byte) quote; | |
866 | ind++; | |
867 | p += 2; | |
868 | } | |
869 | else if (*p) | |
870 | { | |
871 | string_local[ind] = (gdb_byte) (*p); | |
872 | ind++; | |
873 | p++; | |
874 | } | |
875 | } | |
876 | if (*p != quote) | |
877 | { | |
f1e6e072 | 878 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
ec8a089a PM |
879 | SYMBOL_TYPE (sym) = error_type (&p, objfile); |
880 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; | |
881 | add_symbol_to_list (sym, &file_symbols); | |
882 | return sym; | |
883 | } | |
884 | ||
885 | /* NULL terminate the string. */ | |
886 | string_local[ind] = 0; | |
3e43a32a | 887 | range_type |
0c9c3474 SA |
888 | = create_static_range_type (NULL, |
889 | objfile_type (objfile)->builtin_int, | |
890 | 0, ind); | |
ec8a089a PM |
891 | SYMBOL_TYPE (sym) = create_array_type (NULL, |
892 | objfile_type (objfile)->builtin_char, | |
893 | range_type); | |
224c3ddb SM |
894 | string_value |
895 | = (gdb_byte *) obstack_alloc (&objfile->objfile_obstack, ind + 1); | |
ec8a089a PM |
896 | memcpy (string_value, string_local, ind + 1); |
897 | p++; | |
898 | ||
899 | SYMBOL_VALUE_BYTES (sym) = string_value; | |
f1e6e072 | 900 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST_BYTES; |
ec8a089a PM |
901 | } |
902 | break; | |
903 | ||
c906108c SS |
904 | case 'e': |
905 | /* SYMBOL:c=eTYPE,INTVALUE for a constant symbol whose value | |
906 | can be represented as integral. | |
907 | e.g. "b:c=e6,0" for "const b = blob1" | |
908 | (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */ | |
909 | { | |
f1e6e072 | 910 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
c906108c SS |
911 | SYMBOL_TYPE (sym) = read_type (&p, objfile); |
912 | ||
913 | if (*p != ',') | |
914 | { | |
915 | SYMBOL_TYPE (sym) = error_type (&p, objfile); | |
916 | break; | |
917 | } | |
918 | ++p; | |
919 | ||
920 | /* If the value is too big to fit in an int (perhaps because | |
921 | it is unsigned), or something like that, we silently get | |
922 | a bogus value. The type and everything else about it is | |
923 | correct. Ideally, we should be using whatever we have | |
924 | available for parsing unsigned and long long values, | |
925 | however. */ | |
926 | SYMBOL_VALUE (sym) = atoi (p); | |
927 | } | |
928 | break; | |
929 | default: | |
930 | { | |
f1e6e072 | 931 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
c906108c SS |
932 | SYMBOL_TYPE (sym) = error_type (&p, objfile); |
933 | } | |
934 | } | |
176620f1 | 935 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
936 | add_symbol_to_list (sym, &file_symbols); |
937 | return sym; | |
938 | ||
939 | case 'C': | |
940 | /* The name of a caught exception. */ | |
941 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
f1e6e072 | 942 | SYMBOL_ACLASS_INDEX (sym) = LOC_LABEL; |
176620f1 | 943 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
944 | SYMBOL_VALUE_ADDRESS (sym) = valu; |
945 | add_symbol_to_list (sym, &local_symbols); | |
946 | break; | |
947 | ||
948 | case 'f': | |
949 | /* A static function definition. */ | |
950 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
f1e6e072 | 951 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
176620f1 | 952 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
953 | add_symbol_to_list (sym, &file_symbols); |
954 | /* fall into process_function_types. */ | |
955 | ||
956 | process_function_types: | |
957 | /* Function result types are described as the result type in stabs. | |
c5aa993b JM |
958 | We need to convert this to the function-returning-type-X type |
959 | in GDB. E.g. "int" is converted to "function returning int". */ | |
c906108c SS |
960 | if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_FUNC) |
961 | SYMBOL_TYPE (sym) = lookup_function_type (SYMBOL_TYPE (sym)); | |
962 | ||
1e698235 DJ |
963 | /* All functions in C++ have prototypes. Stabs does not offer an |
964 | explicit way to identify prototyped or unprototyped functions, | |
965 | but both GCC and Sun CC emit stabs for the "call-as" type rather | |
966 | than the "declared-as" type for unprototyped functions, so | |
967 | we treat all functions as if they were prototyped. This is used | |
968 | primarily for promotion when calling the function from GDB. */ | |
876cecd0 | 969 | TYPE_PROTOTYPED (SYMBOL_TYPE (sym)) = 1; |
c906108c | 970 | |
c378eb4e | 971 | /* fall into process_prototype_types. */ |
c906108c SS |
972 | |
973 | process_prototype_types: | |
974 | /* Sun acc puts declared types of arguments here. */ | |
975 | if (*p == ';') | |
976 | { | |
977 | struct type *ftype = SYMBOL_TYPE (sym); | |
978 | int nsemi = 0; | |
979 | int nparams = 0; | |
a121b7c1 | 980 | const char *p1 = p; |
c906108c SS |
981 | |
982 | /* Obtain a worst case guess for the number of arguments | |
983 | by counting the semicolons. */ | |
984 | while (*p1) | |
985 | { | |
986 | if (*p1++ == ';') | |
987 | nsemi++; | |
988 | } | |
989 | ||
c378eb4e | 990 | /* Allocate parameter information fields and fill them in. */ |
c906108c SS |
991 | TYPE_FIELDS (ftype) = (struct field *) |
992 | TYPE_ALLOC (ftype, nsemi * sizeof (struct field)); | |
993 | while (*p++ == ';') | |
994 | { | |
995 | struct type *ptype; | |
996 | ||
997 | /* A type number of zero indicates the start of varargs. | |
c5aa993b | 998 | FIXME: GDB currently ignores vararg functions. */ |
c906108c SS |
999 | if (p[0] == '0' && p[1] == '\0') |
1000 | break; | |
1001 | ptype = read_type (&p, objfile); | |
1002 | ||
1003 | /* The Sun compilers mark integer arguments, which should | |
c5aa993b | 1004 | be promoted to the width of the calling conventions, with |
c378eb4e | 1005 | a type which references itself. This type is turned into |
c5aa993b | 1006 | a TYPE_CODE_VOID type by read_type, and we have to turn |
5e2b427d UW |
1007 | it back into builtin_int here. |
1008 | FIXME: Do we need a new builtin_promoted_int_arg ? */ | |
c906108c | 1009 | if (TYPE_CODE (ptype) == TYPE_CODE_VOID) |
46bf5051 | 1010 | ptype = objfile_type (objfile)->builtin_int; |
8176bb6d DJ |
1011 | TYPE_FIELD_TYPE (ftype, nparams) = ptype; |
1012 | TYPE_FIELD_ARTIFICIAL (ftype, nparams++) = 0; | |
c906108c SS |
1013 | } |
1014 | TYPE_NFIELDS (ftype) = nparams; | |
876cecd0 | 1015 | TYPE_PROTOTYPED (ftype) = 1; |
c906108c SS |
1016 | } |
1017 | break; | |
1018 | ||
1019 | case 'F': | |
1020 | /* A global function definition. */ | |
1021 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
f1e6e072 | 1022 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
176620f1 | 1023 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1024 | add_symbol_to_list (sym, &global_symbols); |
1025 | goto process_function_types; | |
1026 | ||
1027 | case 'G': | |
1028 | /* For a class G (global) symbol, it appears that the | |
c5aa993b JM |
1029 | value is not correct. It is necessary to search for the |
1030 | corresponding linker definition to find the value. | |
1031 | These definitions appear at the end of the namelist. */ | |
c906108c | 1032 | SYMBOL_TYPE (sym) = read_type (&p, objfile); |
f1e6e072 | 1033 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
176620f1 | 1034 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c | 1035 | /* Don't add symbol references to global_sym_chain. |
c5aa993b JM |
1036 | Symbol references don't have valid names and wont't match up with |
1037 | minimal symbols when the global_sym_chain is relocated. | |
1038 | We'll fixup symbol references when we fixup the defining symbol. */ | |
3567439c | 1039 | if (SYMBOL_LINKAGE_NAME (sym) && SYMBOL_LINKAGE_NAME (sym)[0] != '#') |
c906108c | 1040 | { |
3567439c | 1041 | i = hashname (SYMBOL_LINKAGE_NAME (sym)); |
c5aa993b JM |
1042 | SYMBOL_VALUE_CHAIN (sym) = global_sym_chain[i]; |
1043 | global_sym_chain[i] = sym; | |
c906108c SS |
1044 | } |
1045 | add_symbol_to_list (sym, &global_symbols); | |
1046 | break; | |
1047 | ||
1048 | /* This case is faked by a conditional above, | |
c5aa993b JM |
1049 | when there is no code letter in the dbx data. |
1050 | Dbx data never actually contains 'l'. */ | |
c906108c SS |
1051 | case 's': |
1052 | case 'l': | |
1053 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
f1e6e072 | 1054 | SYMBOL_ACLASS_INDEX (sym) = LOC_LOCAL; |
c906108c | 1055 | SYMBOL_VALUE (sym) = valu; |
176620f1 | 1056 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1057 | add_symbol_to_list (sym, &local_symbols); |
1058 | break; | |
1059 | ||
1060 | case 'p': | |
1061 | if (*p == 'F') | |
1062 | /* pF is a two-letter code that means a function parameter in Fortran. | |
1063 | The type-number specifies the type of the return value. | |
1064 | Translate it into a pointer-to-function type. */ | |
1065 | { | |
1066 | p++; | |
1067 | SYMBOL_TYPE (sym) | |
1068 | = lookup_pointer_type | |
c5aa993b | 1069 | (lookup_function_type (read_type (&p, objfile))); |
c906108c SS |
1070 | } |
1071 | else | |
1072 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
1073 | ||
f1e6e072 | 1074 | SYMBOL_ACLASS_INDEX (sym) = LOC_ARG; |
c906108c | 1075 | SYMBOL_VALUE (sym) = valu; |
176620f1 | 1076 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
2a2d4dc3 | 1077 | SYMBOL_IS_ARGUMENT (sym) = 1; |
c906108c SS |
1078 | add_symbol_to_list (sym, &local_symbols); |
1079 | ||
5e2b427d | 1080 | if (gdbarch_byte_order (gdbarch) != BFD_ENDIAN_BIG) |
c906108c SS |
1081 | { |
1082 | /* On little-endian machines, this crud is never necessary, | |
1083 | and, if the extra bytes contain garbage, is harmful. */ | |
1084 | break; | |
1085 | } | |
1086 | ||
1087 | /* If it's gcc-compiled, if it says `short', believe it. */ | |
f73e88f9 | 1088 | if (processing_gcc_compilation |
5e2b427d | 1089 | || gdbarch_believe_pcc_promotion (gdbarch)) |
c906108c SS |
1090 | break; |
1091 | ||
5e2b427d | 1092 | if (!gdbarch_believe_pcc_promotion (gdbarch)) |
7a292a7a | 1093 | { |
8ee56bcf AC |
1094 | /* If PCC says a parameter is a short or a char, it is |
1095 | really an int. */ | |
5e2b427d UW |
1096 | if (TYPE_LENGTH (SYMBOL_TYPE (sym)) |
1097 | < gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT | |
8ee56bcf | 1098 | && TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_INT) |
7a292a7a | 1099 | { |
8ee56bcf AC |
1100 | SYMBOL_TYPE (sym) = |
1101 | TYPE_UNSIGNED (SYMBOL_TYPE (sym)) | |
46bf5051 UW |
1102 | ? objfile_type (objfile)->builtin_unsigned_int |
1103 | : objfile_type (objfile)->builtin_int; | |
7a292a7a | 1104 | } |
8ee56bcf | 1105 | break; |
7a292a7a | 1106 | } |
c906108c SS |
1107 | |
1108 | case 'P': | |
1109 | /* acc seems to use P to declare the prototypes of functions that | |
1110 | are referenced by this file. gdb is not prepared to deal | |
1111 | with this extra information. FIXME, it ought to. */ | |
1112 | if (type == N_FUN) | |
1113 | { | |
1114 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
1115 | goto process_prototype_types; | |
1116 | } | |
c5aa993b | 1117 | /*FALLTHROUGH */ |
c906108c SS |
1118 | |
1119 | case 'R': | |
1120 | /* Parameter which is in a register. */ | |
1121 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
f1e6e072 | 1122 | SYMBOL_ACLASS_INDEX (sym) = stab_register_index; |
2a2d4dc3 | 1123 | SYMBOL_IS_ARGUMENT (sym) = 1; |
768a979c | 1124 | SYMBOL_VALUE (sym) = valu; |
176620f1 | 1125 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1126 | add_symbol_to_list (sym, &local_symbols); |
1127 | break; | |
1128 | ||
1129 | case 'r': | |
1130 | /* Register variable (either global or local). */ | |
1131 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
f1e6e072 | 1132 | SYMBOL_ACLASS_INDEX (sym) = stab_register_index; |
768a979c | 1133 | SYMBOL_VALUE (sym) = valu; |
176620f1 | 1134 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1135 | if (within_function) |
1136 | { | |
192cb3d4 MK |
1137 | /* Sun cc uses a pair of symbols, one 'p' and one 'r', with |
1138 | the same name to represent an argument passed in a | |
1139 | register. GCC uses 'P' for the same case. So if we find | |
1140 | such a symbol pair we combine it into one 'P' symbol. | |
1141 | For Sun cc we need to do this regardless of | |
1142 | stabs_argument_has_addr, because the compiler puts out | |
1143 | the 'p' symbol even if it never saves the argument onto | |
1144 | the stack. | |
1145 | ||
1146 | On most machines, we want to preserve both symbols, so | |
1147 | that we can still get information about what is going on | |
1148 | with the stack (VAX for computing args_printed, using | |
1149 | stack slots instead of saved registers in backtraces, | |
1150 | etc.). | |
c906108c SS |
1151 | |
1152 | Note that this code illegally combines | |
c5aa993b | 1153 | main(argc) struct foo argc; { register struct foo argc; } |
c906108c SS |
1154 | but this case is considered pathological and causes a warning |
1155 | from a decent compiler. */ | |
1156 | ||
1157 | if (local_symbols | |
1158 | && local_symbols->nsyms > 0 | |
5e2b427d | 1159 | && gdbarch_stabs_argument_has_addr (gdbarch, SYMBOL_TYPE (sym))) |
c906108c SS |
1160 | { |
1161 | struct symbol *prev_sym; | |
433759f7 | 1162 | |
c906108c SS |
1163 | prev_sym = local_symbols->symbol[local_symbols->nsyms - 1]; |
1164 | if ((SYMBOL_CLASS (prev_sym) == LOC_REF_ARG | |
1165 | || SYMBOL_CLASS (prev_sym) == LOC_ARG) | |
3567439c DJ |
1166 | && strcmp (SYMBOL_LINKAGE_NAME (prev_sym), |
1167 | SYMBOL_LINKAGE_NAME (sym)) == 0) | |
c906108c | 1168 | { |
f1e6e072 | 1169 | SYMBOL_ACLASS_INDEX (prev_sym) = stab_register_index; |
c906108c SS |
1170 | /* Use the type from the LOC_REGISTER; that is the type |
1171 | that is actually in that register. */ | |
1172 | SYMBOL_TYPE (prev_sym) = SYMBOL_TYPE (sym); | |
1173 | SYMBOL_VALUE (prev_sym) = SYMBOL_VALUE (sym); | |
1174 | sym = prev_sym; | |
1175 | break; | |
1176 | } | |
1177 | } | |
c5aa993b | 1178 | add_symbol_to_list (sym, &local_symbols); |
c906108c SS |
1179 | } |
1180 | else | |
c5aa993b | 1181 | add_symbol_to_list (sym, &file_symbols); |
c906108c SS |
1182 | break; |
1183 | ||
1184 | case 'S': | |
c378eb4e | 1185 | /* Static symbol at top level of file. */ |
c906108c | 1186 | SYMBOL_TYPE (sym) = read_type (&p, objfile); |
f1e6e072 | 1187 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
c906108c | 1188 | SYMBOL_VALUE_ADDRESS (sym) = valu; |
5e2b427d UW |
1189 | if (gdbarch_static_transform_name_p (gdbarch) |
1190 | && gdbarch_static_transform_name (gdbarch, | |
3567439c DJ |
1191 | SYMBOL_LINKAGE_NAME (sym)) |
1192 | != SYMBOL_LINKAGE_NAME (sym)) | |
c5aa993b | 1193 | { |
3b7344d5 | 1194 | struct bound_minimal_symbol msym; |
433759f7 | 1195 | |
3e43a32a MS |
1196 | msym = lookup_minimal_symbol (SYMBOL_LINKAGE_NAME (sym), |
1197 | NULL, objfile); | |
3b7344d5 | 1198 | if (msym.minsym != NULL) |
c5aa993b | 1199 | { |
0d5cff50 | 1200 | const char *new_name = gdbarch_static_transform_name |
3567439c | 1201 | (gdbarch, SYMBOL_LINKAGE_NAME (sym)); |
433759f7 | 1202 | |
3567439c | 1203 | SYMBOL_SET_LINKAGE_NAME (sym, new_name); |
77e371c0 | 1204 | SYMBOL_VALUE_ADDRESS (sym) = BMSYMBOL_VALUE_ADDRESS (msym); |
c5aa993b JM |
1205 | } |
1206 | } | |
176620f1 | 1207 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1208 | add_symbol_to_list (sym, &file_symbols); |
1209 | break; | |
1210 | ||
1211 | case 't': | |
52eea4ce JB |
1212 | /* In Ada, there is no distinction between typedef and non-typedef; |
1213 | any type declaration implicitly has the equivalent of a typedef, | |
c378eb4e | 1214 | and thus 't' is in fact equivalent to 'Tt'. |
52eea4ce JB |
1215 | |
1216 | Therefore, for Ada units, we check the character immediately | |
1217 | before the 't', and if we do not find a 'T', then make sure to | |
1218 | create the associated symbol in the STRUCT_DOMAIN ('t' definitions | |
1219 | will be stored in the VAR_DOMAIN). If the symbol was indeed | |
1220 | defined as 'Tt' then the STRUCT_DOMAIN symbol will be created | |
1221 | elsewhere, so we don't need to take care of that. | |
1222 | ||
1223 | This is important to do, because of forward references: | |
1224 | The cleanup of undefined types stored in undef_types only uses | |
1225 | STRUCT_DOMAIN symbols to perform the replacement. */ | |
1226 | synonym = (SYMBOL_LANGUAGE (sym) == language_ada && p[-2] != 'T'); | |
1227 | ||
e2cd42dd | 1228 | /* Typedef */ |
c906108c SS |
1229 | SYMBOL_TYPE (sym) = read_type (&p, objfile); |
1230 | ||
1231 | /* For a nameless type, we don't want a create a symbol, thus we | |
c378eb4e | 1232 | did not use `sym'. Return without further processing. */ |
c5aa993b JM |
1233 | if (nameless) |
1234 | return NULL; | |
c906108c | 1235 | |
f1e6e072 | 1236 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
c906108c | 1237 | SYMBOL_VALUE (sym) = valu; |
176620f1 | 1238 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c | 1239 | /* C++ vagaries: we may have a type which is derived from |
c5aa993b JM |
1240 | a base type which did not have its name defined when the |
1241 | derived class was output. We fill in the derived class's | |
1242 | base part member's name here in that case. */ | |
c906108c SS |
1243 | if (TYPE_NAME (SYMBOL_TYPE (sym)) != NULL) |
1244 | if ((TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_STRUCT | |
1245 | || TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_UNION) | |
1246 | && TYPE_N_BASECLASSES (SYMBOL_TYPE (sym))) | |
1247 | { | |
1248 | int j; | |
433759f7 | 1249 | |
c906108c SS |
1250 | for (j = TYPE_N_BASECLASSES (SYMBOL_TYPE (sym)) - 1; j >= 0; j--) |
1251 | if (TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym), j) == 0) | |
1252 | TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym), j) = | |
1253 | type_name_no_tag (TYPE_BASECLASS (SYMBOL_TYPE (sym), j)); | |
1254 | } | |
1255 | ||
1256 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == NULL) | |
1257 | { | |
1258 | /* gcc-2.6 or later (when using -fvtable-thunks) | |
1259 | emits a unique named type for a vtable entry. | |
c378eb4e | 1260 | Some gdb code depends on that specific name. */ |
c906108c SS |
1261 | extern const char vtbl_ptr_name[]; |
1262 | ||
1263 | if ((TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_PTR | |
3567439c | 1264 | && strcmp (SYMBOL_LINKAGE_NAME (sym), vtbl_ptr_name)) |
c906108c SS |
1265 | || TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_FUNC) |
1266 | { | |
1267 | /* If we are giving a name to a type such as "pointer to | |
c5aa993b JM |
1268 | foo" or "function returning foo", we better not set |
1269 | the TYPE_NAME. If the program contains "typedef char | |
1270 | *caddr_t;", we don't want all variables of type char | |
1271 | * to print as caddr_t. This is not just a | |
1272 | consequence of GDB's type management; PCC and GCC (at | |
1273 | least through version 2.4) both output variables of | |
1274 | either type char * or caddr_t with the type number | |
1275 | defined in the 't' symbol for caddr_t. If a future | |
1276 | compiler cleans this up it GDB is not ready for it | |
1277 | yet, but if it becomes ready we somehow need to | |
1278 | disable this check (without breaking the PCC/GCC2.4 | |
1279 | case). | |
1280 | ||
1281 | Sigh. | |
1282 | ||
1283 | Fortunately, this check seems not to be necessary | |
1284 | for anything except pointers or functions. */ | |
c378eb4e MS |
1285 | /* ezannoni: 2000-10-26. This seems to apply for |
1286 | versions of gcc older than 2.8. This was the original | |
49d97c60 | 1287 | problem: with the following code gdb would tell that |
c378eb4e MS |
1288 | the type for name1 is caddr_t, and func is char(). |
1289 | ||
49d97c60 EZ |
1290 | typedef char *caddr_t; |
1291 | char *name2; | |
1292 | struct x | |
1293 | { | |
c378eb4e | 1294 | char *name1; |
49d97c60 EZ |
1295 | } xx; |
1296 | char *func() | |
1297 | { | |
1298 | } | |
1299 | main () {} | |
1300 | */ | |
1301 | ||
c378eb4e | 1302 | /* Pascal accepts names for pointer types. */ |
49d97c60 EZ |
1303 | if (current_subfile->language == language_pascal) |
1304 | { | |
3567439c | 1305 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_LINKAGE_NAME (sym); |
49d97c60 | 1306 | } |
c906108c SS |
1307 | } |
1308 | else | |
3567439c | 1309 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_LINKAGE_NAME (sym); |
c906108c SS |
1310 | } |
1311 | ||
1312 | add_symbol_to_list (sym, &file_symbols); | |
52eea4ce JB |
1313 | |
1314 | if (synonym) | |
1315 | { | |
1316 | /* Create the STRUCT_DOMAIN clone. */ | |
e623cf5d | 1317 | struct symbol *struct_sym = allocate_symbol (objfile); |
52eea4ce JB |
1318 | |
1319 | *struct_sym = *sym; | |
f1e6e072 | 1320 | SYMBOL_ACLASS_INDEX (struct_sym) = LOC_TYPEDEF; |
52eea4ce JB |
1321 | SYMBOL_VALUE (struct_sym) = valu; |
1322 | SYMBOL_DOMAIN (struct_sym) = STRUCT_DOMAIN; | |
1323 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) | |
3e43a32a MS |
1324 | TYPE_NAME (SYMBOL_TYPE (sym)) |
1325 | = obconcat (&objfile->objfile_obstack, | |
1326 | SYMBOL_LINKAGE_NAME (sym), | |
1327 | (char *) NULL); | |
52eea4ce JB |
1328 | add_symbol_to_list (struct_sym, &file_symbols); |
1329 | } | |
1330 | ||
c906108c SS |
1331 | break; |
1332 | ||
1333 | case 'T': | |
1334 | /* Struct, union, or enum tag. For GNU C++, this can be be followed | |
c5aa993b | 1335 | by 't' which means we are typedef'ing it as well. */ |
c906108c SS |
1336 | synonym = *p == 't'; |
1337 | ||
1338 | if (synonym) | |
1339 | p++; | |
c906108c SS |
1340 | |
1341 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
25caa7a8 | 1342 | |
c906108c | 1343 | /* For a nameless type, we don't want a create a symbol, thus we |
c378eb4e | 1344 | did not use `sym'. Return without further processing. */ |
c5aa993b JM |
1345 | if (nameless) |
1346 | return NULL; | |
c906108c | 1347 | |
f1e6e072 | 1348 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
c906108c | 1349 | SYMBOL_VALUE (sym) = valu; |
176620f1 | 1350 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 1351 | if (TYPE_TAG_NAME (SYMBOL_TYPE (sym)) == 0) |
3e43a32a MS |
1352 | TYPE_TAG_NAME (SYMBOL_TYPE (sym)) |
1353 | = obconcat (&objfile->objfile_obstack, | |
1354 | SYMBOL_LINKAGE_NAME (sym), | |
1355 | (char *) NULL); | |
c906108c SS |
1356 | add_symbol_to_list (sym, &file_symbols); |
1357 | ||
1358 | if (synonym) | |
1359 | { | |
c378eb4e | 1360 | /* Clone the sym and then modify it. */ |
e623cf5d | 1361 | struct symbol *typedef_sym = allocate_symbol (objfile); |
433759f7 | 1362 | |
c906108c | 1363 | *typedef_sym = *sym; |
f1e6e072 | 1364 | SYMBOL_ACLASS_INDEX (typedef_sym) = LOC_TYPEDEF; |
c906108c | 1365 | SYMBOL_VALUE (typedef_sym) = valu; |
176620f1 | 1366 | SYMBOL_DOMAIN (typedef_sym) = VAR_DOMAIN; |
c906108c | 1367 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) |
3e43a32a MS |
1368 | TYPE_NAME (SYMBOL_TYPE (sym)) |
1369 | = obconcat (&objfile->objfile_obstack, | |
1370 | SYMBOL_LINKAGE_NAME (sym), | |
1371 | (char *) NULL); | |
c906108c SS |
1372 | add_symbol_to_list (typedef_sym, &file_symbols); |
1373 | } | |
1374 | break; | |
1375 | ||
1376 | case 'V': | |
c378eb4e | 1377 | /* Static symbol of local scope. */ |
c906108c | 1378 | SYMBOL_TYPE (sym) = read_type (&p, objfile); |
f1e6e072 | 1379 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
c906108c | 1380 | SYMBOL_VALUE_ADDRESS (sym) = valu; |
5e2b427d UW |
1381 | if (gdbarch_static_transform_name_p (gdbarch) |
1382 | && gdbarch_static_transform_name (gdbarch, | |
3567439c DJ |
1383 | SYMBOL_LINKAGE_NAME (sym)) |
1384 | != SYMBOL_LINKAGE_NAME (sym)) | |
c5aa993b | 1385 | { |
3b7344d5 | 1386 | struct bound_minimal_symbol msym; |
433759f7 MS |
1387 | |
1388 | msym = lookup_minimal_symbol (SYMBOL_LINKAGE_NAME (sym), | |
1389 | NULL, objfile); | |
3b7344d5 | 1390 | if (msym.minsym != NULL) |
c5aa993b | 1391 | { |
0d5cff50 | 1392 | const char *new_name = gdbarch_static_transform_name |
3567439c | 1393 | (gdbarch, SYMBOL_LINKAGE_NAME (sym)); |
433759f7 | 1394 | |
3567439c | 1395 | SYMBOL_SET_LINKAGE_NAME (sym, new_name); |
77e371c0 | 1396 | SYMBOL_VALUE_ADDRESS (sym) = BMSYMBOL_VALUE_ADDRESS (msym); |
c5aa993b JM |
1397 | } |
1398 | } | |
176620f1 | 1399 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1400 | add_symbol_to_list (sym, &local_symbols); |
1401 | break; | |
1402 | ||
1403 | case 'v': | |
1404 | /* Reference parameter */ | |
1405 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
f1e6e072 | 1406 | SYMBOL_ACLASS_INDEX (sym) = LOC_REF_ARG; |
2a2d4dc3 | 1407 | SYMBOL_IS_ARGUMENT (sym) = 1; |
c906108c | 1408 | SYMBOL_VALUE (sym) = valu; |
176620f1 | 1409 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1410 | add_symbol_to_list (sym, &local_symbols); |
1411 | break; | |
1412 | ||
1413 | case 'a': | |
1414 | /* Reference parameter which is in a register. */ | |
1415 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
f1e6e072 | 1416 | SYMBOL_ACLASS_INDEX (sym) = stab_regparm_index; |
2a2d4dc3 | 1417 | SYMBOL_IS_ARGUMENT (sym) = 1; |
768a979c | 1418 | SYMBOL_VALUE (sym) = valu; |
176620f1 | 1419 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1420 | add_symbol_to_list (sym, &local_symbols); |
1421 | break; | |
1422 | ||
1423 | case 'X': | |
1424 | /* This is used by Sun FORTRAN for "function result value". | |
c5aa993b JM |
1425 | Sun claims ("dbx and dbxtool interfaces", 2nd ed) |
1426 | that Pascal uses it too, but when I tried it Pascal used | |
1427 | "x:3" (local symbol) instead. */ | |
c906108c | 1428 | SYMBOL_TYPE (sym) = read_type (&p, objfile); |
f1e6e072 | 1429 | SYMBOL_ACLASS_INDEX (sym) = LOC_LOCAL; |
c906108c | 1430 | SYMBOL_VALUE (sym) = valu; |
176620f1 | 1431 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1432 | add_symbol_to_list (sym, &local_symbols); |
1433 | break; | |
c906108c SS |
1434 | |
1435 | default: | |
1436 | SYMBOL_TYPE (sym) = error_type (&p, objfile); | |
f1e6e072 | 1437 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
c906108c | 1438 | SYMBOL_VALUE (sym) = 0; |
176620f1 | 1439 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1440 | add_symbol_to_list (sym, &file_symbols); |
1441 | break; | |
1442 | } | |
1443 | ||
192cb3d4 MK |
1444 | /* Some systems pass variables of certain types by reference instead |
1445 | of by value, i.e. they will pass the address of a structure (in a | |
1446 | register or on the stack) instead of the structure itself. */ | |
c906108c | 1447 | |
5e2b427d | 1448 | if (gdbarch_stabs_argument_has_addr (gdbarch, SYMBOL_TYPE (sym)) |
2a2d4dc3 | 1449 | && SYMBOL_IS_ARGUMENT (sym)) |
c906108c | 1450 | { |
2a2d4dc3 | 1451 | /* We have to convert LOC_REGISTER to LOC_REGPARM_ADDR (for |
192cb3d4 | 1452 | variables passed in a register). */ |
2a2d4dc3 | 1453 | if (SYMBOL_CLASS (sym) == LOC_REGISTER) |
f1e6e072 | 1454 | SYMBOL_ACLASS_INDEX (sym) = LOC_REGPARM_ADDR; |
192cb3d4 MK |
1455 | /* Likewise for converting LOC_ARG to LOC_REF_ARG (for the 7th |
1456 | and subsequent arguments on SPARC, for example). */ | |
1457 | else if (SYMBOL_CLASS (sym) == LOC_ARG) | |
f1e6e072 | 1458 | SYMBOL_ACLASS_INDEX (sym) = LOC_REF_ARG; |
c906108c SS |
1459 | } |
1460 | ||
c906108c SS |
1461 | return sym; |
1462 | } | |
1463 | ||
c906108c SS |
1464 | /* Skip rest of this symbol and return an error type. |
1465 | ||
1466 | General notes on error recovery: error_type always skips to the | |
1467 | end of the symbol (modulo cretinous dbx symbol name continuation). | |
1468 | Thus code like this: | |
1469 | ||
1470 | if (*(*pp)++ != ';') | |
c5aa993b | 1471 | return error_type (pp, objfile); |
c906108c SS |
1472 | |
1473 | is wrong because if *pp starts out pointing at '\0' (typically as the | |
1474 | result of an earlier error), it will be incremented to point to the | |
1475 | start of the next symbol, which might produce strange results, at least | |
1476 | if you run off the end of the string table. Instead use | |
1477 | ||
1478 | if (**pp != ';') | |
c5aa993b | 1479 | return error_type (pp, objfile); |
c906108c SS |
1480 | ++*pp; |
1481 | ||
1482 | or | |
1483 | ||
1484 | if (**pp != ';') | |
c5aa993b | 1485 | foo = error_type (pp, objfile); |
c906108c | 1486 | else |
c5aa993b | 1487 | ++*pp; |
c906108c SS |
1488 | |
1489 | And in case it isn't obvious, the point of all this hair is so the compiler | |
1490 | can define new types and new syntaxes, and old versions of the | |
1491 | debugger will be able to read the new symbol tables. */ | |
1492 | ||
1493 | static struct type * | |
a121b7c1 | 1494 | error_type (const char **pp, struct objfile *objfile) |
c906108c | 1495 | { |
3e43a32a MS |
1496 | complaint (&symfile_complaints, |
1497 | _("couldn't parse type; debugger out of date?")); | |
c906108c SS |
1498 | while (1) |
1499 | { | |
1500 | /* Skip to end of symbol. */ | |
1501 | while (**pp != '\0') | |
1502 | { | |
1503 | (*pp)++; | |
1504 | } | |
1505 | ||
1506 | /* Check for and handle cretinous dbx symbol name continuation! */ | |
1507 | if ((*pp)[-1] == '\\' || (*pp)[-1] == '?') | |
1508 | { | |
1509 | *pp = next_symbol_text (objfile); | |
1510 | } | |
1511 | else | |
1512 | { | |
1513 | break; | |
1514 | } | |
1515 | } | |
46bf5051 | 1516 | return objfile_type (objfile)->builtin_error; |
c906108c | 1517 | } |
c906108c | 1518 | \f |
c5aa993b | 1519 | |
c906108c SS |
1520 | /* Read type information or a type definition; return the type. Even |
1521 | though this routine accepts either type information or a type | |
1522 | definition, the distinction is relevant--some parts of stabsread.c | |
1523 | assume that type information starts with a digit, '-', or '(' in | |
1524 | deciding whether to call read_type. */ | |
1525 | ||
a7a48797 | 1526 | static struct type * |
a121b7c1 | 1527 | read_type (const char **pp, struct objfile *objfile) |
c906108c | 1528 | { |
52f0bd74 | 1529 | struct type *type = 0; |
c906108c SS |
1530 | struct type *type1; |
1531 | int typenums[2]; | |
1532 | char type_descriptor; | |
1533 | ||
1534 | /* Size in bits of type if specified by a type attribute, or -1 if | |
1535 | there is no size attribute. */ | |
1536 | int type_size = -1; | |
1537 | ||
c378eb4e | 1538 | /* Used to distinguish string and bitstring from char-array and set. */ |
c906108c SS |
1539 | int is_string = 0; |
1540 | ||
c378eb4e | 1541 | /* Used to distinguish vector from array. */ |
e2cd42dd MS |
1542 | int is_vector = 0; |
1543 | ||
c906108c SS |
1544 | /* Read type number if present. The type number may be omitted. |
1545 | for instance in a two-dimensional array declared with type | |
1546 | "ar1;1;10;ar1;1;10;4". */ | |
1547 | if ((**pp >= '0' && **pp <= '9') | |
1548 | || **pp == '(' | |
1549 | || **pp == '-') | |
1550 | { | |
1551 | if (read_type_number (pp, typenums) != 0) | |
1552 | return error_type (pp, objfile); | |
c5aa993b | 1553 | |
c906108c | 1554 | if (**pp != '=') |
8cfe231d JB |
1555 | { |
1556 | /* Type is not being defined here. Either it already | |
1557 | exists, or this is a forward reference to it. | |
1558 | dbx_alloc_type handles both cases. */ | |
1559 | type = dbx_alloc_type (typenums, objfile); | |
1560 | ||
1561 | /* If this is a forward reference, arrange to complain if it | |
1562 | doesn't get patched up by the time we're done | |
1563 | reading. */ | |
1564 | if (TYPE_CODE (type) == TYPE_CODE_UNDEF) | |
bf362611 | 1565 | add_undefined_type (type, typenums); |
8cfe231d JB |
1566 | |
1567 | return type; | |
1568 | } | |
c906108c SS |
1569 | |
1570 | /* Type is being defined here. */ | |
1571 | /* Skip the '='. | |
c5aa993b JM |
1572 | Also skip the type descriptor - we get it below with (*pp)[-1]. */ |
1573 | (*pp) += 2; | |
c906108c SS |
1574 | } |
1575 | else | |
1576 | { | |
1577 | /* 'typenums=' not present, type is anonymous. Read and return | |
c5aa993b | 1578 | the definition, but don't put it in the type vector. */ |
c906108c SS |
1579 | typenums[0] = typenums[1] = -1; |
1580 | (*pp)++; | |
1581 | } | |
1582 | ||
c5aa993b | 1583 | again: |
c906108c SS |
1584 | type_descriptor = (*pp)[-1]; |
1585 | switch (type_descriptor) | |
1586 | { | |
1587 | case 'x': | |
1588 | { | |
1589 | enum type_code code; | |
1590 | ||
1591 | /* Used to index through file_symbols. */ | |
1592 | struct pending *ppt; | |
1593 | int i; | |
c5aa993b | 1594 | |
c906108c SS |
1595 | /* Name including "struct", etc. */ |
1596 | char *type_name; | |
c5aa993b | 1597 | |
c906108c | 1598 | { |
a121b7c1 | 1599 | const char *from, *p, *q1, *q2; |
c5aa993b | 1600 | |
c906108c SS |
1601 | /* Set the type code according to the following letter. */ |
1602 | switch ((*pp)[0]) | |
1603 | { | |
1604 | case 's': | |
1605 | code = TYPE_CODE_STRUCT; | |
1606 | break; | |
1607 | case 'u': | |
1608 | code = TYPE_CODE_UNION; | |
1609 | break; | |
1610 | case 'e': | |
1611 | code = TYPE_CODE_ENUM; | |
1612 | break; | |
1613 | default: | |
1614 | { | |
1615 | /* Complain and keep going, so compilers can invent new | |
1616 | cross-reference types. */ | |
23136709 | 1617 | complaint (&symfile_complaints, |
3e43a32a MS |
1618 | _("Unrecognized cross-reference type `%c'"), |
1619 | (*pp)[0]); | |
c906108c SS |
1620 | code = TYPE_CODE_STRUCT; |
1621 | break; | |
1622 | } | |
1623 | } | |
c5aa993b | 1624 | |
c906108c SS |
1625 | q1 = strchr (*pp, '<'); |
1626 | p = strchr (*pp, ':'); | |
1627 | if (p == NULL) | |
1628 | return error_type (pp, objfile); | |
1629 | if (q1 && p > q1 && p[1] == ':') | |
1630 | { | |
1631 | int nesting_level = 0; | |
433759f7 | 1632 | |
c906108c SS |
1633 | for (q2 = q1; *q2; q2++) |
1634 | { | |
1635 | if (*q2 == '<') | |
1636 | nesting_level++; | |
1637 | else if (*q2 == '>') | |
1638 | nesting_level--; | |
1639 | else if (*q2 == ':' && nesting_level == 0) | |
1640 | break; | |
1641 | } | |
1642 | p = q2; | |
1643 | if (*p != ':') | |
1644 | return error_type (pp, objfile); | |
1645 | } | |
71c25dea TT |
1646 | type_name = NULL; |
1647 | if (current_subfile->language == language_cplus) | |
1648 | { | |
2f408ecb | 1649 | char *name = (char *) alloca (p - *pp + 1); |
433759f7 | 1650 | |
71c25dea TT |
1651 | memcpy (name, *pp, p - *pp); |
1652 | name[p - *pp] = '\0'; | |
2f408ecb PA |
1653 | |
1654 | std::string new_name = cp_canonicalize_string (name); | |
1655 | if (!new_name.empty ()) | |
71c25dea | 1656 | { |
224c3ddb SM |
1657 | type_name |
1658 | = (char *) obstack_copy0 (&objfile->objfile_obstack, | |
2f408ecb PA |
1659 | new_name.c_str (), |
1660 | new_name.length ()); | |
71c25dea TT |
1661 | } |
1662 | } | |
1663 | if (type_name == NULL) | |
1664 | { | |
a121b7c1 | 1665 | char *to = type_name = (char *) |
3e43a32a | 1666 | obstack_alloc (&objfile->objfile_obstack, p - *pp + 1); |
71c25dea TT |
1667 | |
1668 | /* Copy the name. */ | |
1669 | from = *pp + 1; | |
1670 | while (from < p) | |
1671 | *to++ = *from++; | |
1672 | *to = '\0'; | |
1673 | } | |
c5aa993b | 1674 | |
c906108c SS |
1675 | /* Set the pointer ahead of the name which we just read, and |
1676 | the colon. */ | |
71c25dea | 1677 | *pp = p + 1; |
c906108c SS |
1678 | } |
1679 | ||
149d821b JB |
1680 | /* If this type has already been declared, then reuse the same |
1681 | type, rather than allocating a new one. This saves some | |
1682 | memory. */ | |
c906108c SS |
1683 | |
1684 | for (ppt = file_symbols; ppt; ppt = ppt->next) | |
1685 | for (i = 0; i < ppt->nsyms; i++) | |
1686 | { | |
1687 | struct symbol *sym = ppt->symbol[i]; | |
1688 | ||
1689 | if (SYMBOL_CLASS (sym) == LOC_TYPEDEF | |
176620f1 | 1690 | && SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN |
c906108c | 1691 | && (TYPE_CODE (SYMBOL_TYPE (sym)) == code) |
3567439c | 1692 | && strcmp (SYMBOL_LINKAGE_NAME (sym), type_name) == 0) |
c906108c | 1693 | { |
b99607ea | 1694 | obstack_free (&objfile->objfile_obstack, type_name); |
c906108c | 1695 | type = SYMBOL_TYPE (sym); |
149d821b | 1696 | if (typenums[0] != -1) |
46bf5051 | 1697 | *dbx_lookup_type (typenums, objfile) = type; |
c906108c SS |
1698 | return type; |
1699 | } | |
1700 | } | |
1701 | ||
1702 | /* Didn't find the type to which this refers, so we must | |
1703 | be dealing with a forward reference. Allocate a type | |
1704 | structure for it, and keep track of it so we can | |
1705 | fill in the rest of the fields when we get the full | |
1706 | type. */ | |
1707 | type = dbx_alloc_type (typenums, objfile); | |
1708 | TYPE_CODE (type) = code; | |
1709 | TYPE_TAG_NAME (type) = type_name; | |
c5aa993b | 1710 | INIT_CPLUS_SPECIFIC (type); |
876cecd0 | 1711 | TYPE_STUB (type) = 1; |
c906108c | 1712 | |
bf362611 | 1713 | add_undefined_type (type, typenums); |
c906108c SS |
1714 | return type; |
1715 | } | |
1716 | ||
c5aa993b | 1717 | case '-': /* RS/6000 built-in type */ |
c906108c SS |
1718 | case '0': |
1719 | case '1': | |
1720 | case '2': | |
1721 | case '3': | |
1722 | case '4': | |
1723 | case '5': | |
1724 | case '6': | |
1725 | case '7': | |
1726 | case '8': | |
1727 | case '9': | |
1728 | case '(': | |
1729 | (*pp)--; | |
1730 | ||
1731 | /* We deal with something like t(1,2)=(3,4)=... which | |
c378eb4e | 1732 | the Lucid compiler and recent gcc versions (post 2.7.3) use. */ |
c906108c SS |
1733 | |
1734 | /* Allocate and enter the typedef type first. | |
c378eb4e | 1735 | This handles recursive types. */ |
c906108c SS |
1736 | type = dbx_alloc_type (typenums, objfile); |
1737 | TYPE_CODE (type) = TYPE_CODE_TYPEDEF; | |
c5aa993b JM |
1738 | { |
1739 | struct type *xtype = read_type (pp, objfile); | |
433759f7 | 1740 | |
c906108c SS |
1741 | if (type == xtype) |
1742 | { | |
1743 | /* It's being defined as itself. That means it is "void". */ | |
1744 | TYPE_CODE (type) = TYPE_CODE_VOID; | |
1745 | TYPE_LENGTH (type) = 1; | |
1746 | } | |
1747 | else if (type_size >= 0 || is_string) | |
1748 | { | |
dd6bda65 DJ |
1749 | /* This is the absolute wrong way to construct types. Every |
1750 | other debug format has found a way around this problem and | |
1751 | the related problems with unnecessarily stubbed types; | |
1752 | someone motivated should attempt to clean up the issue | |
1753 | here as well. Once a type pointed to has been created it | |
13a393b0 JB |
1754 | should not be modified. |
1755 | ||
1756 | Well, it's not *absolutely* wrong. Constructing recursive | |
1757 | types (trees, linked lists) necessarily entails modifying | |
1758 | types after creating them. Constructing any loop structure | |
1759 | entails side effects. The Dwarf 2 reader does handle this | |
1760 | more gracefully (it never constructs more than once | |
1761 | instance of a type object, so it doesn't have to copy type | |
1762 | objects wholesale), but it still mutates type objects after | |
1763 | other folks have references to them. | |
1764 | ||
1765 | Keep in mind that this circularity/mutation issue shows up | |
1766 | at the source language level, too: C's "incomplete types", | |
1767 | for example. So the proper cleanup, I think, would be to | |
1768 | limit GDB's type smashing to match exactly those required | |
1769 | by the source language. So GDB could have a | |
1770 | "complete_this_type" function, but never create unnecessary | |
1771 | copies of a type otherwise. */ | |
dd6bda65 | 1772 | replace_type (type, xtype); |
c906108c SS |
1773 | TYPE_NAME (type) = NULL; |
1774 | TYPE_TAG_NAME (type) = NULL; | |
1775 | } | |
1776 | else | |
1777 | { | |
876cecd0 | 1778 | TYPE_TARGET_STUB (type) = 1; |
c906108c SS |
1779 | TYPE_TARGET_TYPE (type) = xtype; |
1780 | } | |
1781 | } | |
1782 | break; | |
1783 | ||
c5aa993b JM |
1784 | /* In the following types, we must be sure to overwrite any existing |
1785 | type that the typenums refer to, rather than allocating a new one | |
1786 | and making the typenums point to the new one. This is because there | |
1787 | may already be pointers to the existing type (if it had been | |
1788 | forward-referenced), and we must change it to a pointer, function, | |
1789 | reference, or whatever, *in-place*. */ | |
c906108c | 1790 | |
e2cd42dd | 1791 | case '*': /* Pointer to another type */ |
c906108c | 1792 | type1 = read_type (pp, objfile); |
46bf5051 | 1793 | type = make_pointer_type (type1, dbx_lookup_type (typenums, objfile)); |
c906108c SS |
1794 | break; |
1795 | ||
c5aa993b | 1796 | case '&': /* Reference to another type */ |
c906108c | 1797 | type1 = read_type (pp, objfile); |
3b224330 AV |
1798 | type = make_reference_type (type1, dbx_lookup_type (typenums, objfile), |
1799 | TYPE_CODE_REF); | |
c906108c SS |
1800 | break; |
1801 | ||
c5aa993b | 1802 | case 'f': /* Function returning another type */ |
c906108c | 1803 | type1 = read_type (pp, objfile); |
0c8b41f1 | 1804 | type = make_function_type (type1, dbx_lookup_type (typenums, objfile)); |
c906108c SS |
1805 | break; |
1806 | ||
da966255 JB |
1807 | case 'g': /* Prototyped function. (Sun) */ |
1808 | { | |
1809 | /* Unresolved questions: | |
1810 | ||
1811 | - According to Sun's ``STABS Interface Manual'', for 'f' | |
1812 | and 'F' symbol descriptors, a `0' in the argument type list | |
1813 | indicates a varargs function. But it doesn't say how 'g' | |
1814 | type descriptors represent that info. Someone with access | |
1815 | to Sun's toolchain should try it out. | |
1816 | ||
1817 | - According to the comment in define_symbol (search for | |
1818 | `process_prototype_types:'), Sun emits integer arguments as | |
1819 | types which ref themselves --- like `void' types. Do we | |
1820 | have to deal with that here, too? Again, someone with | |
1821 | access to Sun's toolchain should try it out and let us | |
1822 | know. */ | |
1823 | ||
1824 | const char *type_start = (*pp) - 1; | |
1825 | struct type *return_type = read_type (pp, objfile); | |
1826 | struct type *func_type | |
46bf5051 | 1827 | = make_function_type (return_type, |
0c8b41f1 | 1828 | dbx_lookup_type (typenums, objfile)); |
da966255 JB |
1829 | struct type_list { |
1830 | struct type *type; | |
1831 | struct type_list *next; | |
1832 | } *arg_types = 0; | |
1833 | int num_args = 0; | |
1834 | ||
1835 | while (**pp && **pp != '#') | |
1836 | { | |
1837 | struct type *arg_type = read_type (pp, objfile); | |
8d749320 | 1838 | struct type_list *newobj = XALLOCA (struct type_list); |
fe978cb0 PA |
1839 | newobj->type = arg_type; |
1840 | newobj->next = arg_types; | |
1841 | arg_types = newobj; | |
da966255 JB |
1842 | num_args++; |
1843 | } | |
1844 | if (**pp == '#') | |
1845 | ++*pp; | |
1846 | else | |
1847 | { | |
23136709 | 1848 | complaint (&symfile_complaints, |
3e43a32a MS |
1849 | _("Prototyped function type didn't " |
1850 | "end arguments with `#':\n%s"), | |
23136709 | 1851 | type_start); |
da966255 JB |
1852 | } |
1853 | ||
1854 | /* If there is just one argument whose type is `void', then | |
1855 | that's just an empty argument list. */ | |
1856 | if (arg_types | |
1857 | && ! arg_types->next | |
1858 | && TYPE_CODE (arg_types->type) == TYPE_CODE_VOID) | |
1859 | num_args = 0; | |
1860 | ||
1861 | TYPE_FIELDS (func_type) | |
1862 | = (struct field *) TYPE_ALLOC (func_type, | |
1863 | num_args * sizeof (struct field)); | |
1864 | memset (TYPE_FIELDS (func_type), 0, num_args * sizeof (struct field)); | |
1865 | { | |
1866 | int i; | |
1867 | struct type_list *t; | |
1868 | ||
1869 | /* We stuck each argument type onto the front of the list | |
1870 | when we read it, so the list is reversed. Build the | |
1871 | fields array right-to-left. */ | |
1872 | for (t = arg_types, i = num_args - 1; t; t = t->next, i--) | |
1873 | TYPE_FIELD_TYPE (func_type, i) = t->type; | |
1874 | } | |
1875 | TYPE_NFIELDS (func_type) = num_args; | |
876cecd0 | 1876 | TYPE_PROTOTYPED (func_type) = 1; |
da966255 JB |
1877 | |
1878 | type = func_type; | |
1879 | break; | |
1880 | } | |
1881 | ||
c5aa993b | 1882 | case 'k': /* Const qualifier on some type (Sun) */ |
c906108c | 1883 | type = read_type (pp, objfile); |
d7242108 | 1884 | type = make_cv_type (1, TYPE_VOLATILE (type), type, |
46bf5051 | 1885 | dbx_lookup_type (typenums, objfile)); |
c906108c SS |
1886 | break; |
1887 | ||
c5aa993b | 1888 | case 'B': /* Volatile qual on some type (Sun) */ |
c906108c | 1889 | type = read_type (pp, objfile); |
d7242108 | 1890 | type = make_cv_type (TYPE_CONST (type), 1, type, |
46bf5051 | 1891 | dbx_lookup_type (typenums, objfile)); |
c906108c SS |
1892 | break; |
1893 | ||
1894 | case '@': | |
c5aa993b JM |
1895 | if (isdigit (**pp) || **pp == '(' || **pp == '-') |
1896 | { /* Member (class & variable) type */ | |
c906108c SS |
1897 | /* FIXME -- we should be doing smash_to_XXX types here. */ |
1898 | ||
1899 | struct type *domain = read_type (pp, objfile); | |
1900 | struct type *memtype; | |
1901 | ||
1902 | if (**pp != ',') | |
1903 | /* Invalid member type data format. */ | |
1904 | return error_type (pp, objfile); | |
1905 | ++*pp; | |
1906 | ||
1907 | memtype = read_type (pp, objfile); | |
1908 | type = dbx_alloc_type (typenums, objfile); | |
0d5de010 | 1909 | smash_to_memberptr_type (type, domain, memtype); |
c906108c | 1910 | } |
c5aa993b JM |
1911 | else |
1912 | /* type attribute */ | |
c906108c | 1913 | { |
a121b7c1 | 1914 | const char *attr = *pp; |
433759f7 | 1915 | |
c906108c SS |
1916 | /* Skip to the semicolon. */ |
1917 | while (**pp != ';' && **pp != '\0') | |
1918 | ++(*pp); | |
1919 | if (**pp == '\0') | |
1920 | return error_type (pp, objfile); | |
1921 | else | |
c5aa993b | 1922 | ++ * pp; /* Skip the semicolon. */ |
c906108c SS |
1923 | |
1924 | switch (*attr) | |
1925 | { | |
e2cd42dd | 1926 | case 's': /* Size attribute */ |
c906108c SS |
1927 | type_size = atoi (attr + 1); |
1928 | if (type_size <= 0) | |
1929 | type_size = -1; | |
1930 | break; | |
1931 | ||
e2cd42dd | 1932 | case 'S': /* String attribute */ |
c378eb4e | 1933 | /* FIXME: check to see if following type is array? */ |
c906108c SS |
1934 | is_string = 1; |
1935 | break; | |
1936 | ||
e2cd42dd | 1937 | case 'V': /* Vector attribute */ |
c378eb4e | 1938 | /* FIXME: check to see if following type is array? */ |
e2cd42dd MS |
1939 | is_vector = 1; |
1940 | break; | |
1941 | ||
c906108c SS |
1942 | default: |
1943 | /* Ignore unrecognized type attributes, so future compilers | |
c5aa993b | 1944 | can invent new ones. */ |
c906108c SS |
1945 | break; |
1946 | } | |
1947 | ++*pp; | |
1948 | goto again; | |
1949 | } | |
1950 | break; | |
1951 | ||
c5aa993b | 1952 | case '#': /* Method (class & fn) type */ |
c906108c SS |
1953 | if ((*pp)[0] == '#') |
1954 | { | |
1955 | /* We'll get the parameter types from the name. */ | |
1956 | struct type *return_type; | |
1957 | ||
1958 | (*pp)++; | |
1959 | return_type = read_type (pp, objfile); | |
1960 | if (*(*pp)++ != ';') | |
23136709 | 1961 | complaint (&symfile_complaints, |
3e43a32a MS |
1962 | _("invalid (minimal) member type " |
1963 | "data format at symtab pos %d."), | |
23136709 | 1964 | symnum); |
c906108c SS |
1965 | type = allocate_stub_method (return_type); |
1966 | if (typenums[0] != -1) | |
46bf5051 | 1967 | *dbx_lookup_type (typenums, objfile) = type; |
c906108c SS |
1968 | } |
1969 | else | |
1970 | { | |
1971 | struct type *domain = read_type (pp, objfile); | |
1972 | struct type *return_type; | |
ad2f7632 DJ |
1973 | struct field *args; |
1974 | int nargs, varargs; | |
c906108c SS |
1975 | |
1976 | if (**pp != ',') | |
1977 | /* Invalid member type data format. */ | |
1978 | return error_type (pp, objfile); | |
1979 | else | |
1980 | ++(*pp); | |
1981 | ||
1982 | return_type = read_type (pp, objfile); | |
ad2f7632 | 1983 | args = read_args (pp, ';', objfile, &nargs, &varargs); |
0a029df5 DJ |
1984 | if (args == NULL) |
1985 | return error_type (pp, objfile); | |
c906108c | 1986 | type = dbx_alloc_type (typenums, objfile); |
ad2f7632 DJ |
1987 | smash_to_method_type (type, domain, return_type, args, |
1988 | nargs, varargs); | |
c906108c SS |
1989 | } |
1990 | break; | |
1991 | ||
c5aa993b | 1992 | case 'r': /* Range type */ |
94e10a22 | 1993 | type = read_range_type (pp, typenums, type_size, objfile); |
c906108c | 1994 | if (typenums[0] != -1) |
46bf5051 | 1995 | *dbx_lookup_type (typenums, objfile) = type; |
c906108c SS |
1996 | break; |
1997 | ||
1998 | case 'b': | |
c906108c SS |
1999 | { |
2000 | /* Sun ACC builtin int type */ | |
2001 | type = read_sun_builtin_type (pp, typenums, objfile); | |
2002 | if (typenums[0] != -1) | |
46bf5051 | 2003 | *dbx_lookup_type (typenums, objfile) = type; |
c906108c SS |
2004 | } |
2005 | break; | |
2006 | ||
c5aa993b | 2007 | case 'R': /* Sun ACC builtin float type */ |
c906108c SS |
2008 | type = read_sun_floating_type (pp, typenums, objfile); |
2009 | if (typenums[0] != -1) | |
46bf5051 | 2010 | *dbx_lookup_type (typenums, objfile) = type; |
c906108c | 2011 | break; |
c5aa993b JM |
2012 | |
2013 | case 'e': /* Enumeration type */ | |
c906108c SS |
2014 | type = dbx_alloc_type (typenums, objfile); |
2015 | type = read_enum_type (pp, type, objfile); | |
2016 | if (typenums[0] != -1) | |
46bf5051 | 2017 | *dbx_lookup_type (typenums, objfile) = type; |
c906108c SS |
2018 | break; |
2019 | ||
c5aa993b JM |
2020 | case 's': /* Struct type */ |
2021 | case 'u': /* Union type */ | |
2ae1c2d2 JB |
2022 | { |
2023 | enum type_code type_code = TYPE_CODE_UNDEF; | |
2024 | type = dbx_alloc_type (typenums, objfile); | |
2025 | switch (type_descriptor) | |
2026 | { | |
2027 | case 's': | |
2028 | type_code = TYPE_CODE_STRUCT; | |
2029 | break; | |
2030 | case 'u': | |
2031 | type_code = TYPE_CODE_UNION; | |
2032 | break; | |
2033 | } | |
2034 | type = read_struct_type (pp, type, type_code, objfile); | |
2035 | break; | |
2036 | } | |
c906108c | 2037 | |
c5aa993b | 2038 | case 'a': /* Array type */ |
c906108c SS |
2039 | if (**pp != 'r') |
2040 | return error_type (pp, objfile); | |
2041 | ++*pp; | |
c5aa993b | 2042 | |
c906108c SS |
2043 | type = dbx_alloc_type (typenums, objfile); |
2044 | type = read_array_type (pp, type, objfile); | |
2045 | if (is_string) | |
2046 | TYPE_CODE (type) = TYPE_CODE_STRING; | |
e2cd42dd | 2047 | if (is_vector) |
ea37ba09 | 2048 | make_vector_type (type); |
c906108c SS |
2049 | break; |
2050 | ||
6b1755ce | 2051 | case 'S': /* Set type */ |
c906108c | 2052 | type1 = read_type (pp, objfile); |
c5aa993b | 2053 | type = create_set_type ((struct type *) NULL, type1); |
c906108c | 2054 | if (typenums[0] != -1) |
46bf5051 | 2055 | *dbx_lookup_type (typenums, objfile) = type; |
c906108c SS |
2056 | break; |
2057 | ||
2058 | default: | |
c378eb4e MS |
2059 | --*pp; /* Go back to the symbol in error. */ |
2060 | /* Particularly important if it was \0! */ | |
c906108c SS |
2061 | return error_type (pp, objfile); |
2062 | } | |
2063 | ||
2064 | if (type == 0) | |
2065 | { | |
8a3fe4f8 | 2066 | warning (_("GDB internal error, type is NULL in stabsread.c.")); |
c906108c SS |
2067 | return error_type (pp, objfile); |
2068 | } | |
2069 | ||
2070 | /* Size specified in a type attribute overrides any other size. */ | |
2071 | if (type_size != -1) | |
2072 | TYPE_LENGTH (type) = (type_size + TARGET_CHAR_BIT - 1) / TARGET_CHAR_BIT; | |
2073 | ||
2074 | return type; | |
2075 | } | |
2076 | \f | |
2077 | /* RS/6000 xlc/dbx combination uses a set of builtin types, starting from -1. | |
c378eb4e | 2078 | Return the proper type node for a given builtin type number. */ |
c906108c | 2079 | |
46bf5051 UW |
2080 | static const struct objfile_data *rs6000_builtin_type_data; |
2081 | ||
c906108c | 2082 | static struct type * |
46bf5051 | 2083 | rs6000_builtin_type (int typenum, struct objfile *objfile) |
c906108c | 2084 | { |
19ba03f4 SM |
2085 | struct type **negative_types |
2086 | = (struct type **) objfile_data (objfile, rs6000_builtin_type_data); | |
46bf5051 | 2087 | |
c906108c SS |
2088 | /* We recognize types numbered from -NUMBER_RECOGNIZED to -1. */ |
2089 | #define NUMBER_RECOGNIZED 34 | |
c906108c SS |
2090 | struct type *rettype = NULL; |
2091 | ||
2092 | if (typenum >= 0 || typenum < -NUMBER_RECOGNIZED) | |
2093 | { | |
e2e0b3e5 | 2094 | complaint (&symfile_complaints, _("Unknown builtin type %d"), typenum); |
46bf5051 | 2095 | return objfile_type (objfile)->builtin_error; |
c906108c | 2096 | } |
46bf5051 UW |
2097 | |
2098 | if (!negative_types) | |
2099 | { | |
2100 | /* This includes an empty slot for type number -0. */ | |
2101 | negative_types = OBSTACK_CALLOC (&objfile->objfile_obstack, | |
2102 | NUMBER_RECOGNIZED + 1, struct type *); | |
2103 | set_objfile_data (objfile, rs6000_builtin_type_data, negative_types); | |
2104 | } | |
2105 | ||
c906108c SS |
2106 | if (negative_types[-typenum] != NULL) |
2107 | return negative_types[-typenum]; | |
2108 | ||
2109 | #if TARGET_CHAR_BIT != 8 | |
c5aa993b | 2110 | #error This code wrong for TARGET_CHAR_BIT not 8 |
c906108c SS |
2111 | /* These definitions all assume that TARGET_CHAR_BIT is 8. I think |
2112 | that if that ever becomes not true, the correct fix will be to | |
2113 | make the size in the struct type to be in bits, not in units of | |
2114 | TARGET_CHAR_BIT. */ | |
2115 | #endif | |
2116 | ||
2117 | switch (-typenum) | |
2118 | { | |
2119 | case 1: | |
2120 | /* The size of this and all the other types are fixed, defined | |
c5aa993b JM |
2121 | by the debugging format. If there is a type called "int" which |
2122 | is other than 32 bits, then it should use a new negative type | |
2123 | number (or avoid negative type numbers for that case). | |
2124 | See stabs.texinfo. */ | |
19f392bc | 2125 | rettype = init_integer_type (objfile, 32, 0, "int"); |
c906108c SS |
2126 | break; |
2127 | case 2: | |
19f392bc | 2128 | rettype = init_integer_type (objfile, 8, 0, "char"); |
c413c448 | 2129 | TYPE_NOSIGN (rettype) = 1; |
c906108c SS |
2130 | break; |
2131 | case 3: | |
19f392bc | 2132 | rettype = init_integer_type (objfile, 16, 0, "short"); |
c906108c SS |
2133 | break; |
2134 | case 4: | |
19f392bc | 2135 | rettype = init_integer_type (objfile, 32, 0, "long"); |
c906108c SS |
2136 | break; |
2137 | case 5: | |
19f392bc | 2138 | rettype = init_integer_type (objfile, 8, 1, "unsigned char"); |
c906108c SS |
2139 | break; |
2140 | case 6: | |
19f392bc | 2141 | rettype = init_integer_type (objfile, 8, 0, "signed char"); |
c906108c SS |
2142 | break; |
2143 | case 7: | |
19f392bc | 2144 | rettype = init_integer_type (objfile, 16, 1, "unsigned short"); |
c906108c SS |
2145 | break; |
2146 | case 8: | |
19f392bc | 2147 | rettype = init_integer_type (objfile, 32, 1, "unsigned int"); |
c906108c SS |
2148 | break; |
2149 | case 9: | |
19f392bc | 2150 | rettype = init_integer_type (objfile, 32, 1, "unsigned"); |
89acf84d | 2151 | break; |
c906108c | 2152 | case 10: |
19f392bc | 2153 | rettype = init_integer_type (objfile, 32, 1, "unsigned long"); |
c906108c SS |
2154 | break; |
2155 | case 11: | |
77b7c781 | 2156 | rettype = init_type (objfile, TYPE_CODE_VOID, TARGET_CHAR_BIT, "void"); |
c906108c SS |
2157 | break; |
2158 | case 12: | |
2159 | /* IEEE single precision (32 bit). */ | |
49f190bc UW |
2160 | rettype = init_float_type (objfile, 32, "float", |
2161 | floatformats_ieee_single); | |
c906108c SS |
2162 | break; |
2163 | case 13: | |
2164 | /* IEEE double precision (64 bit). */ | |
49f190bc UW |
2165 | rettype = init_float_type (objfile, 64, "double", |
2166 | floatformats_ieee_double); | |
c906108c SS |
2167 | break; |
2168 | case 14: | |
2169 | /* This is an IEEE double on the RS/6000, and different machines with | |
c5aa993b JM |
2170 | different sizes for "long double" should use different negative |
2171 | type numbers. See stabs.texinfo. */ | |
49f190bc UW |
2172 | rettype = init_float_type (objfile, 64, "long double", |
2173 | floatformats_ieee_double); | |
c906108c SS |
2174 | break; |
2175 | case 15: | |
19f392bc | 2176 | rettype = init_integer_type (objfile, 32, 0, "integer"); |
c906108c SS |
2177 | break; |
2178 | case 16: | |
19f392bc | 2179 | rettype = init_boolean_type (objfile, 32, 1, "boolean"); |
c906108c SS |
2180 | break; |
2181 | case 17: | |
49f190bc UW |
2182 | rettype = init_float_type (objfile, 32, "short real", |
2183 | floatformats_ieee_single); | |
c906108c SS |
2184 | break; |
2185 | case 18: | |
49f190bc UW |
2186 | rettype = init_float_type (objfile, 64, "real", |
2187 | floatformats_ieee_double); | |
c906108c SS |
2188 | break; |
2189 | case 19: | |
19f392bc | 2190 | rettype = init_type (objfile, TYPE_CODE_ERROR, 0, "stringptr"); |
c906108c SS |
2191 | break; |
2192 | case 20: | |
19f392bc | 2193 | rettype = init_character_type (objfile, 8, 1, "character"); |
c906108c SS |
2194 | break; |
2195 | case 21: | |
19f392bc | 2196 | rettype = init_boolean_type (objfile, 8, 1, "logical*1"); |
c906108c SS |
2197 | break; |
2198 | case 22: | |
19f392bc | 2199 | rettype = init_boolean_type (objfile, 16, 1, "logical*2"); |
c906108c SS |
2200 | break; |
2201 | case 23: | |
19f392bc | 2202 | rettype = init_boolean_type (objfile, 32, 1, "logical*4"); |
c906108c SS |
2203 | break; |
2204 | case 24: | |
19f392bc | 2205 | rettype = init_boolean_type (objfile, 32, 1, "logical"); |
c906108c SS |
2206 | break; |
2207 | case 25: | |
2208 | /* Complex type consisting of two IEEE single precision values. */ | |
19f392bc UW |
2209 | rettype = init_complex_type (objfile, "complex", |
2210 | rs6000_builtin_type (12, objfile)); | |
c906108c SS |
2211 | break; |
2212 | case 26: | |
2213 | /* Complex type consisting of two IEEE double precision values. */ | |
19f392bc UW |
2214 | rettype = init_complex_type (objfile, "double complex", |
2215 | rs6000_builtin_type (13, objfile)); | |
c906108c SS |
2216 | break; |
2217 | case 27: | |
19f392bc | 2218 | rettype = init_integer_type (objfile, 8, 0, "integer*1"); |
c906108c SS |
2219 | break; |
2220 | case 28: | |
19f392bc | 2221 | rettype = init_integer_type (objfile, 16, 0, "integer*2"); |
c906108c SS |
2222 | break; |
2223 | case 29: | |
19f392bc | 2224 | rettype = init_integer_type (objfile, 32, 0, "integer*4"); |
c906108c SS |
2225 | break; |
2226 | case 30: | |
19f392bc | 2227 | rettype = init_character_type (objfile, 16, 0, "wchar"); |
c906108c SS |
2228 | break; |
2229 | case 31: | |
19f392bc | 2230 | rettype = init_integer_type (objfile, 64, 0, "long long"); |
c906108c SS |
2231 | break; |
2232 | case 32: | |
19f392bc | 2233 | rettype = init_integer_type (objfile, 64, 1, "unsigned long long"); |
c906108c SS |
2234 | break; |
2235 | case 33: | |
19f392bc | 2236 | rettype = init_integer_type (objfile, 64, 1, "logical*8"); |
c906108c SS |
2237 | break; |
2238 | case 34: | |
19f392bc | 2239 | rettype = init_integer_type (objfile, 64, 0, "integer*8"); |
c906108c SS |
2240 | break; |
2241 | } | |
2242 | negative_types[-typenum] = rettype; | |
2243 | return rettype; | |
2244 | } | |
2245 | \f | |
2246 | /* This page contains subroutines of read_type. */ | |
2247 | ||
0d5cff50 DE |
2248 | /* Wrapper around method_name_from_physname to flag a complaint |
2249 | if there is an error. */ | |
de17c821 | 2250 | |
0d5cff50 DE |
2251 | static char * |
2252 | stabs_method_name_from_physname (const char *physname) | |
de17c821 DJ |
2253 | { |
2254 | char *method_name; | |
2255 | ||
2256 | method_name = method_name_from_physname (physname); | |
2257 | ||
2258 | if (method_name == NULL) | |
c263362b DJ |
2259 | { |
2260 | complaint (&symfile_complaints, | |
e2e0b3e5 | 2261 | _("Method has bad physname %s\n"), physname); |
0d5cff50 | 2262 | return NULL; |
c263362b | 2263 | } |
de17c821 | 2264 | |
0d5cff50 | 2265 | return method_name; |
de17c821 DJ |
2266 | } |
2267 | ||
c906108c SS |
2268 | /* Read member function stabs info for C++ classes. The form of each member |
2269 | function data is: | |
2270 | ||
c5aa993b | 2271 | NAME :: TYPENUM[=type definition] ARGS : PHYSNAME ; |
c906108c SS |
2272 | |
2273 | An example with two member functions is: | |
2274 | ||
c5aa993b | 2275 | afunc1::20=##15;:i;2A.;afunc2::20:i;2A.; |
c906108c SS |
2276 | |
2277 | For the case of overloaded operators, the format is op$::*.funcs, where | |
2278 | $ is the CPLUS_MARKER (usually '$'), `*' holds the place for an operator | |
2279 | name (such as `+=') and `.' marks the end of the operator name. | |
2280 | ||
2281 | Returns 1 for success, 0 for failure. */ | |
2282 | ||
2283 | static int | |
a121b7c1 PA |
2284 | read_member_functions (struct field_info *fip, const char **pp, |
2285 | struct type *type, struct objfile *objfile) | |
c906108c SS |
2286 | { |
2287 | int nfn_fields = 0; | |
2288 | int length = 0; | |
c906108c SS |
2289 | int i; |
2290 | struct next_fnfield | |
2291 | { | |
2292 | struct next_fnfield *next; | |
2293 | struct fn_field fn_field; | |
c5aa993b JM |
2294 | } |
2295 | *sublist; | |
c906108c SS |
2296 | struct type *look_ahead_type; |
2297 | struct next_fnfieldlist *new_fnlist; | |
2298 | struct next_fnfield *new_sublist; | |
2299 | char *main_fn_name; | |
a121b7c1 | 2300 | const char *p; |
c5aa993b | 2301 | |
c906108c | 2302 | /* Process each list until we find something that is not a member function |
c378eb4e | 2303 | or find the end of the functions. */ |
c906108c SS |
2304 | |
2305 | while (**pp != ';') | |
2306 | { | |
2307 | /* We should be positioned at the start of the function name. | |
c5aa993b | 2308 | Scan forward to find the first ':' and if it is not the |
c378eb4e | 2309 | first of a "::" delimiter, then this is not a member function. */ |
c906108c SS |
2310 | p = *pp; |
2311 | while (*p != ':') | |
2312 | { | |
2313 | p++; | |
2314 | } | |
2315 | if (p[1] != ':') | |
2316 | { | |
2317 | break; | |
2318 | } | |
2319 | ||
2320 | sublist = NULL; | |
2321 | look_ahead_type = NULL; | |
2322 | length = 0; | |
c5aa993b | 2323 | |
8d749320 | 2324 | new_fnlist = XCNEW (struct next_fnfieldlist); |
b8c9b27d | 2325 | make_cleanup (xfree, new_fnlist); |
c5aa993b | 2326 | |
c906108c SS |
2327 | if ((*pp)[0] == 'o' && (*pp)[1] == 'p' && is_cplus_marker ((*pp)[2])) |
2328 | { | |
2329 | /* This is a completely wierd case. In order to stuff in the | |
2330 | names that might contain colons (the usual name delimiter), | |
2331 | Mike Tiemann defined a different name format which is | |
2332 | signalled if the identifier is "op$". In that case, the | |
2333 | format is "op$::XXXX." where XXXX is the name. This is | |
2334 | used for names like "+" or "=". YUUUUUUUK! FIXME! */ | |
2335 | /* This lets the user type "break operator+". | |
2336 | We could just put in "+" as the name, but that wouldn't | |
2337 | work for "*". */ | |
8343f86c | 2338 | static char opname[32] = "op$"; |
c906108c | 2339 | char *o = opname + 3; |
c5aa993b | 2340 | |
c906108c SS |
2341 | /* Skip past '::'. */ |
2342 | *pp = p + 2; | |
2343 | ||
2344 | STABS_CONTINUE (pp, objfile); | |
2345 | p = *pp; | |
2346 | while (*p != '.') | |
2347 | { | |
2348 | *o++ = *p++; | |
2349 | } | |
2350 | main_fn_name = savestring (opname, o - opname); | |
2351 | /* Skip past '.' */ | |
2352 | *pp = p + 1; | |
2353 | } | |
2354 | else | |
2355 | { | |
2356 | main_fn_name = savestring (*pp, p - *pp); | |
2357 | /* Skip past '::'. */ | |
2358 | *pp = p + 2; | |
2359 | } | |
c5aa993b JM |
2360 | new_fnlist->fn_fieldlist.name = main_fn_name; |
2361 | ||
c906108c SS |
2362 | do |
2363 | { | |
8d749320 | 2364 | new_sublist = XCNEW (struct next_fnfield); |
b8c9b27d | 2365 | make_cleanup (xfree, new_sublist); |
c5aa993b | 2366 | |
c906108c SS |
2367 | /* Check for and handle cretinous dbx symbol name continuation! */ |
2368 | if (look_ahead_type == NULL) | |
2369 | { | |
c378eb4e | 2370 | /* Normal case. */ |
c906108c | 2371 | STABS_CONTINUE (pp, objfile); |
c5aa993b JM |
2372 | |
2373 | new_sublist->fn_field.type = read_type (pp, objfile); | |
c906108c SS |
2374 | if (**pp != ':') |
2375 | { | |
2376 | /* Invalid symtab info for member function. */ | |
2377 | return 0; | |
2378 | } | |
2379 | } | |
2380 | else | |
2381 | { | |
2382 | /* g++ version 1 kludge */ | |
c5aa993b | 2383 | new_sublist->fn_field.type = look_ahead_type; |
c906108c SS |
2384 | look_ahead_type = NULL; |
2385 | } | |
c5aa993b | 2386 | |
c906108c SS |
2387 | (*pp)++; |
2388 | p = *pp; | |
2389 | while (*p != ';') | |
2390 | { | |
2391 | p++; | |
2392 | } | |
c5aa993b | 2393 | |
09e2d7c7 DE |
2394 | /* These are methods, not functions. */ |
2395 | if (TYPE_CODE (new_sublist->fn_field.type) == TYPE_CODE_FUNC) | |
2396 | TYPE_CODE (new_sublist->fn_field.type) = TYPE_CODE_METHOD; | |
2397 | else | |
2398 | gdb_assert (TYPE_CODE (new_sublist->fn_field.type) | |
2399 | == TYPE_CODE_METHOD); | |
c906108c | 2400 | |
09e2d7c7 | 2401 | /* If this is just a stub, then we don't have the real name here. */ |
74a9bb82 | 2402 | if (TYPE_STUB (new_sublist->fn_field.type)) |
c906108c | 2403 | { |
4bfb94b8 | 2404 | if (!TYPE_SELF_TYPE (new_sublist->fn_field.type)) |
09e2d7c7 | 2405 | set_type_self_type (new_sublist->fn_field.type, type); |
c5aa993b | 2406 | new_sublist->fn_field.is_stub = 1; |
c906108c | 2407 | } |
09e2d7c7 | 2408 | |
c5aa993b | 2409 | new_sublist->fn_field.physname = savestring (*pp, p - *pp); |
c906108c | 2410 | *pp = p + 1; |
c5aa993b | 2411 | |
c906108c SS |
2412 | /* Set this member function's visibility fields. */ |
2413 | switch (*(*pp)++) | |
2414 | { | |
c5aa993b JM |
2415 | case VISIBILITY_PRIVATE: |
2416 | new_sublist->fn_field.is_private = 1; | |
2417 | break; | |
2418 | case VISIBILITY_PROTECTED: | |
2419 | new_sublist->fn_field.is_protected = 1; | |
2420 | break; | |
c906108c | 2421 | } |
c5aa993b | 2422 | |
c906108c SS |
2423 | STABS_CONTINUE (pp, objfile); |
2424 | switch (**pp) | |
2425 | { | |
c378eb4e | 2426 | case 'A': /* Normal functions. */ |
c5aa993b JM |
2427 | new_sublist->fn_field.is_const = 0; |
2428 | new_sublist->fn_field.is_volatile = 0; | |
2429 | (*pp)++; | |
2430 | break; | |
c378eb4e | 2431 | case 'B': /* `const' member functions. */ |
c5aa993b JM |
2432 | new_sublist->fn_field.is_const = 1; |
2433 | new_sublist->fn_field.is_volatile = 0; | |
2434 | (*pp)++; | |
2435 | break; | |
c378eb4e | 2436 | case 'C': /* `volatile' member function. */ |
c5aa993b JM |
2437 | new_sublist->fn_field.is_const = 0; |
2438 | new_sublist->fn_field.is_volatile = 1; | |
2439 | (*pp)++; | |
2440 | break; | |
c378eb4e | 2441 | case 'D': /* `const volatile' member function. */ |
c5aa993b JM |
2442 | new_sublist->fn_field.is_const = 1; |
2443 | new_sublist->fn_field.is_volatile = 1; | |
2444 | (*pp)++; | |
2445 | break; | |
3e43a32a | 2446 | case '*': /* File compiled with g++ version 1 -- |
c378eb4e | 2447 | no info. */ |
c5aa993b JM |
2448 | case '?': |
2449 | case '.': | |
2450 | break; | |
2451 | default: | |
23136709 | 2452 | complaint (&symfile_complaints, |
3e43a32a MS |
2453 | _("const/volatile indicator missing, got '%c'"), |
2454 | **pp); | |
c5aa993b | 2455 | break; |
c906108c | 2456 | } |
c5aa993b | 2457 | |
c906108c SS |
2458 | switch (*(*pp)++) |
2459 | { | |
c5aa993b | 2460 | case '*': |
c906108c SS |
2461 | { |
2462 | int nbits; | |
c5aa993b | 2463 | /* virtual member function, followed by index. |
c906108c SS |
2464 | The sign bit is set to distinguish pointers-to-methods |
2465 | from virtual function indicies. Since the array is | |
2466 | in words, the quantity must be shifted left by 1 | |
2467 | on 16 bit machine, and by 2 on 32 bit machine, forcing | |
2468 | the sign bit out, and usable as a valid index into | |
2469 | the array. Remove the sign bit here. */ | |
c5aa993b | 2470 | new_sublist->fn_field.voffset = |
94e10a22 | 2471 | (0x7fffffff & read_huge_number (pp, ';', &nbits, 0)) + 2; |
c906108c SS |
2472 | if (nbits != 0) |
2473 | return 0; | |
c5aa993b | 2474 | |
c906108c SS |
2475 | STABS_CONTINUE (pp, objfile); |
2476 | if (**pp == ';' || **pp == '\0') | |
2477 | { | |
2478 | /* Must be g++ version 1. */ | |
c5aa993b | 2479 | new_sublist->fn_field.fcontext = 0; |
c906108c SS |
2480 | } |
2481 | else | |
2482 | { | |
2483 | /* Figure out from whence this virtual function came. | |
2484 | It may belong to virtual function table of | |
2485 | one of its baseclasses. */ | |
2486 | look_ahead_type = read_type (pp, objfile); | |
2487 | if (**pp == ':') | |
2488 | { | |
c378eb4e | 2489 | /* g++ version 1 overloaded methods. */ |
c906108c SS |
2490 | } |
2491 | else | |
2492 | { | |
c5aa993b | 2493 | new_sublist->fn_field.fcontext = look_ahead_type; |
c906108c SS |
2494 | if (**pp != ';') |
2495 | { | |
2496 | return 0; | |
2497 | } | |
2498 | else | |
2499 | { | |
2500 | ++*pp; | |
2501 | } | |
2502 | look_ahead_type = NULL; | |
2503 | } | |
2504 | } | |
2505 | break; | |
2506 | } | |
c5aa993b JM |
2507 | case '?': |
2508 | /* static member function. */ | |
4ea09c10 PS |
2509 | { |
2510 | int slen = strlen (main_fn_name); | |
2511 | ||
2512 | new_sublist->fn_field.voffset = VOFFSET_STATIC; | |
2513 | ||
2514 | /* For static member functions, we can't tell if they | |
2515 | are stubbed, as they are put out as functions, and not as | |
2516 | methods. | |
2517 | GCC v2 emits the fully mangled name if | |
2518 | dbxout.c:flag_minimal_debug is not set, so we have to | |
2519 | detect a fully mangled physname here and set is_stub | |
2520 | accordingly. Fully mangled physnames in v2 start with | |
2521 | the member function name, followed by two underscores. | |
2522 | GCC v3 currently always emits stubbed member functions, | |
2523 | but with fully mangled physnames, which start with _Z. */ | |
2524 | if (!(strncmp (new_sublist->fn_field.physname, | |
2525 | main_fn_name, slen) == 0 | |
2526 | && new_sublist->fn_field.physname[slen] == '_' | |
2527 | && new_sublist->fn_field.physname[slen + 1] == '_')) | |
2528 | { | |
2529 | new_sublist->fn_field.is_stub = 1; | |
2530 | } | |
2531 | break; | |
2532 | } | |
c5aa993b JM |
2533 | |
2534 | default: | |
2535 | /* error */ | |
23136709 | 2536 | complaint (&symfile_complaints, |
3e43a32a MS |
2537 | _("member function type missing, got '%c'"), |
2538 | (*pp)[-1]); | |
c5aa993b JM |
2539 | /* Fall through into normal member function. */ |
2540 | ||
2541 | case '.': | |
2542 | /* normal member function. */ | |
2543 | new_sublist->fn_field.voffset = 0; | |
2544 | new_sublist->fn_field.fcontext = 0; | |
2545 | break; | |
c906108c | 2546 | } |
c5aa993b JM |
2547 | |
2548 | new_sublist->next = sublist; | |
c906108c SS |
2549 | sublist = new_sublist; |
2550 | length++; | |
2551 | STABS_CONTINUE (pp, objfile); | |
2552 | } | |
2553 | while (**pp != ';' && **pp != '\0'); | |
c5aa993b | 2554 | |
c906108c | 2555 | (*pp)++; |
0c867556 | 2556 | STABS_CONTINUE (pp, objfile); |
c5aa993b | 2557 | |
0c867556 PS |
2558 | /* Skip GCC 3.X member functions which are duplicates of the callable |
2559 | constructor/destructor. */ | |
6cbbcdfe KS |
2560 | if (strcmp_iw (main_fn_name, "__base_ctor ") == 0 |
2561 | || strcmp_iw (main_fn_name, "__base_dtor ") == 0 | |
0c867556 | 2562 | || strcmp (main_fn_name, "__deleting_dtor") == 0) |
c906108c | 2563 | { |
0c867556 | 2564 | xfree (main_fn_name); |
c906108c | 2565 | } |
0c867556 PS |
2566 | else |
2567 | { | |
de17c821 DJ |
2568 | int has_stub = 0; |
2569 | int has_destructor = 0, has_other = 0; | |
2570 | int is_v3 = 0; | |
2571 | struct next_fnfield *tmp_sublist; | |
2572 | ||
2573 | /* Various versions of GCC emit various mostly-useless | |
2574 | strings in the name field for special member functions. | |
2575 | ||
2576 | For stub methods, we need to defer correcting the name | |
2577 | until we are ready to unstub the method, because the current | |
2578 | name string is used by gdb_mangle_name. The only stub methods | |
2579 | of concern here are GNU v2 operators; other methods have their | |
2580 | names correct (see caveat below). | |
2581 | ||
2582 | For non-stub methods, in GNU v3, we have a complete physname. | |
2583 | Therefore we can safely correct the name now. This primarily | |
2584 | affects constructors and destructors, whose name will be | |
2585 | __comp_ctor or __comp_dtor instead of Foo or ~Foo. Cast | |
2586 | operators will also have incorrect names; for instance, | |
2587 | "operator int" will be named "operator i" (i.e. the type is | |
2588 | mangled). | |
2589 | ||
2590 | For non-stub methods in GNU v2, we have no easy way to | |
2591 | know if we have a complete physname or not. For most | |
2592 | methods the result depends on the platform (if CPLUS_MARKER | |
2593 | can be `$' or `.', it will use minimal debug information, or | |
2594 | otherwise the full physname will be included). | |
2595 | ||
2596 | Rather than dealing with this, we take a different approach. | |
2597 | For v3 mangled names, we can use the full physname; for v2, | |
2598 | we use cplus_demangle_opname (which is actually v2 specific), | |
2599 | because the only interesting names are all operators - once again | |
2600 | barring the caveat below. Skip this process if any method in the | |
2601 | group is a stub, to prevent our fouling up the workings of | |
2602 | gdb_mangle_name. | |
2603 | ||
2604 | The caveat: GCC 2.95.x (and earlier?) put constructors and | |
2605 | destructors in the same method group. We need to split this | |
2606 | into two groups, because they should have different names. | |
2607 | So for each method group we check whether it contains both | |
2608 | routines whose physname appears to be a destructor (the physnames | |
2609 | for and destructors are always provided, due to quirks in v2 | |
2610 | mangling) and routines whose physname does not appear to be a | |
2611 | destructor. If so then we break up the list into two halves. | |
2612 | Even if the constructors and destructors aren't in the same group | |
2613 | the destructor will still lack the leading tilde, so that also | |
2614 | needs to be fixed. | |
2615 | ||
2616 | So, to summarize what we expect and handle here: | |
2617 | ||
2618 | Given Given Real Real Action | |
2619 | method name physname physname method name | |
2620 | ||
2621 | __opi [none] __opi__3Foo operator int opname | |
3e43a32a MS |
2622 | [now or later] |
2623 | Foo _._3Foo _._3Foo ~Foo separate and | |
de17c821 DJ |
2624 | rename |
2625 | operator i _ZN3FoocviEv _ZN3FoocviEv operator int demangle | |
2626 | __comp_ctor _ZN3FooC1ERKS_ _ZN3FooC1ERKS_ Foo demangle | |
2627 | */ | |
2628 | ||
2629 | tmp_sublist = sublist; | |
2630 | while (tmp_sublist != NULL) | |
2631 | { | |
2632 | if (tmp_sublist->fn_field.is_stub) | |
2633 | has_stub = 1; | |
2634 | if (tmp_sublist->fn_field.physname[0] == '_' | |
2635 | && tmp_sublist->fn_field.physname[1] == 'Z') | |
2636 | is_v3 = 1; | |
2637 | ||
2638 | if (is_destructor_name (tmp_sublist->fn_field.physname)) | |
2639 | has_destructor++; | |
2640 | else | |
2641 | has_other++; | |
2642 | ||
2643 | tmp_sublist = tmp_sublist->next; | |
2644 | } | |
2645 | ||
2646 | if (has_destructor && has_other) | |
2647 | { | |
2648 | struct next_fnfieldlist *destr_fnlist; | |
2649 | struct next_fnfield *last_sublist; | |
2650 | ||
2651 | /* Create a new fn_fieldlist for the destructors. */ | |
2652 | ||
8d749320 | 2653 | destr_fnlist = XCNEW (struct next_fnfieldlist); |
de17c821 | 2654 | make_cleanup (xfree, destr_fnlist); |
8d749320 | 2655 | |
de17c821 | 2656 | destr_fnlist->fn_fieldlist.name |
48cb83fd JK |
2657 | = obconcat (&objfile->objfile_obstack, "~", |
2658 | new_fnlist->fn_fieldlist.name, (char *) NULL); | |
de17c821 | 2659 | |
8d749320 SM |
2660 | destr_fnlist->fn_fieldlist.fn_fields = |
2661 | XOBNEWVEC (&objfile->objfile_obstack, | |
2662 | struct fn_field, has_destructor); | |
de17c821 DJ |
2663 | memset (destr_fnlist->fn_fieldlist.fn_fields, 0, |
2664 | sizeof (struct fn_field) * has_destructor); | |
2665 | tmp_sublist = sublist; | |
2666 | last_sublist = NULL; | |
2667 | i = 0; | |
2668 | while (tmp_sublist != NULL) | |
2669 | { | |
2670 | if (!is_destructor_name (tmp_sublist->fn_field.physname)) | |
2671 | { | |
2672 | tmp_sublist = tmp_sublist->next; | |
2673 | continue; | |
2674 | } | |
2675 | ||
2676 | destr_fnlist->fn_fieldlist.fn_fields[i++] | |
2677 | = tmp_sublist->fn_field; | |
2678 | if (last_sublist) | |
2679 | last_sublist->next = tmp_sublist->next; | |
2680 | else | |
2681 | sublist = tmp_sublist->next; | |
2682 | last_sublist = tmp_sublist; | |
2683 | tmp_sublist = tmp_sublist->next; | |
2684 | } | |
2685 | ||
2686 | destr_fnlist->fn_fieldlist.length = has_destructor; | |
2687 | destr_fnlist->next = fip->fnlist; | |
2688 | fip->fnlist = destr_fnlist; | |
2689 | nfn_fields++; | |
de17c821 DJ |
2690 | length -= has_destructor; |
2691 | } | |
2692 | else if (is_v3) | |
2693 | { | |
2694 | /* v3 mangling prevents the use of abbreviated physnames, | |
2695 | so we can do this here. There are stubbed methods in v3 | |
2696 | only: | |
2697 | - in -gstabs instead of -gstabs+ | |
2698 | - or for static methods, which are output as a function type | |
2699 | instead of a method type. */ | |
0d5cff50 DE |
2700 | char *new_method_name = |
2701 | stabs_method_name_from_physname (sublist->fn_field.physname); | |
de17c821 | 2702 | |
0d5cff50 DE |
2703 | if (new_method_name != NULL |
2704 | && strcmp (new_method_name, | |
2705 | new_fnlist->fn_fieldlist.name) != 0) | |
2706 | { | |
2707 | new_fnlist->fn_fieldlist.name = new_method_name; | |
2708 | xfree (main_fn_name); | |
2709 | } | |
2710 | else | |
2711 | xfree (new_method_name); | |
de17c821 DJ |
2712 | } |
2713 | else if (has_destructor && new_fnlist->fn_fieldlist.name[0] != '~') | |
2714 | { | |
1754f103 | 2715 | new_fnlist->fn_fieldlist.name = |
0d5cff50 DE |
2716 | obconcat (&objfile->objfile_obstack, |
2717 | "~", main_fn_name, (char *)NULL); | |
de17c821 DJ |
2718 | xfree (main_fn_name); |
2719 | } | |
2720 | else if (!has_stub) | |
2721 | { | |
2722 | char dem_opname[256]; | |
2723 | int ret; | |
433759f7 | 2724 | |
de17c821 DJ |
2725 | ret = cplus_demangle_opname (new_fnlist->fn_fieldlist.name, |
2726 | dem_opname, DMGL_ANSI); | |
2727 | if (!ret) | |
2728 | ret = cplus_demangle_opname (new_fnlist->fn_fieldlist.name, | |
2729 | dem_opname, 0); | |
2730 | if (ret) | |
2731 | new_fnlist->fn_fieldlist.name | |
224c3ddb SM |
2732 | = ((const char *) |
2733 | obstack_copy0 (&objfile->objfile_obstack, dem_opname, | |
2734 | strlen (dem_opname))); | |
0d5cff50 | 2735 | xfree (main_fn_name); |
de17c821 DJ |
2736 | } |
2737 | ||
0c867556 | 2738 | new_fnlist->fn_fieldlist.fn_fields = (struct fn_field *) |
b99607ea | 2739 | obstack_alloc (&objfile->objfile_obstack, |
0c867556 PS |
2740 | sizeof (struct fn_field) * length); |
2741 | memset (new_fnlist->fn_fieldlist.fn_fields, 0, | |
2742 | sizeof (struct fn_field) * length); | |
2743 | for (i = length; (i--, sublist); sublist = sublist->next) | |
2744 | { | |
2745 | new_fnlist->fn_fieldlist.fn_fields[i] = sublist->fn_field; | |
2746 | } | |
c5aa993b | 2747 | |
0c867556 PS |
2748 | new_fnlist->fn_fieldlist.length = length; |
2749 | new_fnlist->next = fip->fnlist; | |
2750 | fip->fnlist = new_fnlist; | |
2751 | nfn_fields++; | |
0c867556 | 2752 | } |
c906108c SS |
2753 | } |
2754 | ||
2755 | if (nfn_fields) | |
2756 | { | |
2757 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
2758 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
2759 | TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * nfn_fields); | |
2760 | memset (TYPE_FN_FIELDLISTS (type), 0, | |
2761 | sizeof (struct fn_fieldlist) * nfn_fields); | |
2762 | TYPE_NFN_FIELDS (type) = nfn_fields; | |
c906108c SS |
2763 | } |
2764 | ||
2765 | return 1; | |
2766 | } | |
2767 | ||
2768 | /* Special GNU C++ name. | |
2769 | ||
2770 | Returns 1 for success, 0 for failure. "failure" means that we can't | |
2771 | keep parsing and it's time for error_type(). */ | |
2772 | ||
2773 | static int | |
a121b7c1 | 2774 | read_cpp_abbrev (struct field_info *fip, const char **pp, struct type *type, |
fba45db2 | 2775 | struct objfile *objfile) |
c906108c | 2776 | { |
a121b7c1 | 2777 | const char *p; |
0d5cff50 | 2778 | const char *name; |
c906108c SS |
2779 | char cpp_abbrev; |
2780 | struct type *context; | |
2781 | ||
2782 | p = *pp; | |
2783 | if (*++p == 'v') | |
2784 | { | |
2785 | name = NULL; | |
2786 | cpp_abbrev = *++p; | |
2787 | ||
2788 | *pp = p + 1; | |
2789 | ||
2790 | /* At this point, *pp points to something like "22:23=*22...", | |
c5aa993b JM |
2791 | where the type number before the ':' is the "context" and |
2792 | everything after is a regular type definition. Lookup the | |
c378eb4e | 2793 | type, find it's name, and construct the field name. */ |
c906108c SS |
2794 | |
2795 | context = read_type (pp, objfile); | |
2796 | ||
2797 | switch (cpp_abbrev) | |
2798 | { | |
c5aa993b | 2799 | case 'f': /* $vf -- a virtual function table pointer */ |
c2bd2ed9 JB |
2800 | name = type_name_no_tag (context); |
2801 | if (name == NULL) | |
433759f7 MS |
2802 | { |
2803 | name = ""; | |
2804 | } | |
48cb83fd JK |
2805 | fip->list->field.name = obconcat (&objfile->objfile_obstack, |
2806 | vptr_name, name, (char *) NULL); | |
c5aa993b | 2807 | break; |
c906108c | 2808 | |
c5aa993b JM |
2809 | case 'b': /* $vb -- a virtual bsomethingorother */ |
2810 | name = type_name_no_tag (context); | |
2811 | if (name == NULL) | |
2812 | { | |
23136709 | 2813 | complaint (&symfile_complaints, |
3e43a32a MS |
2814 | _("C++ abbreviated type name " |
2815 | "unknown at symtab pos %d"), | |
23136709 | 2816 | symnum); |
c5aa993b JM |
2817 | name = "FOO"; |
2818 | } | |
48cb83fd JK |
2819 | fip->list->field.name = obconcat (&objfile->objfile_obstack, vb_name, |
2820 | name, (char *) NULL); | |
c5aa993b | 2821 | break; |
c906108c | 2822 | |
c5aa993b | 2823 | default: |
23136709 | 2824 | invalid_cpp_abbrev_complaint (*pp); |
48cb83fd JK |
2825 | fip->list->field.name = obconcat (&objfile->objfile_obstack, |
2826 | "INVALID_CPLUSPLUS_ABBREV", | |
2827 | (char *) NULL); | |
c5aa993b | 2828 | break; |
c906108c SS |
2829 | } |
2830 | ||
2831 | /* At this point, *pp points to the ':'. Skip it and read the | |
c378eb4e | 2832 | field type. */ |
c906108c SS |
2833 | |
2834 | p = ++(*pp); | |
2835 | if (p[-1] != ':') | |
2836 | { | |
23136709 | 2837 | invalid_cpp_abbrev_complaint (*pp); |
c906108c SS |
2838 | return 0; |
2839 | } | |
2840 | fip->list->field.type = read_type (pp, objfile); | |
2841 | if (**pp == ',') | |
c5aa993b | 2842 | (*pp)++; /* Skip the comma. */ |
c906108c SS |
2843 | else |
2844 | return 0; | |
2845 | ||
2846 | { | |
2847 | int nbits; | |
433759f7 | 2848 | |
f41f5e61 PA |
2849 | SET_FIELD_BITPOS (fip->list->field, |
2850 | read_huge_number (pp, ';', &nbits, 0)); | |
c906108c SS |
2851 | if (nbits != 0) |
2852 | return 0; | |
2853 | } | |
2854 | /* This field is unpacked. */ | |
2855 | FIELD_BITSIZE (fip->list->field) = 0; | |
2856 | fip->list->visibility = VISIBILITY_PRIVATE; | |
2857 | } | |
2858 | else | |
2859 | { | |
23136709 | 2860 | invalid_cpp_abbrev_complaint (*pp); |
c906108c | 2861 | /* We have no idea what syntax an unrecognized abbrev would have, so |
c5aa993b JM |
2862 | better return 0. If we returned 1, we would need to at least advance |
2863 | *pp to avoid an infinite loop. */ | |
c906108c SS |
2864 | return 0; |
2865 | } | |
2866 | return 1; | |
2867 | } | |
2868 | ||
2869 | static void | |
a121b7c1 | 2870 | read_one_struct_field (struct field_info *fip, const char **pp, const char *p, |
fba45db2 | 2871 | struct type *type, struct objfile *objfile) |
c906108c | 2872 | { |
5e2b427d UW |
2873 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
2874 | ||
224c3ddb SM |
2875 | fip->list->field.name |
2876 | = (const char *) obstack_copy0 (&objfile->objfile_obstack, *pp, p - *pp); | |
c906108c SS |
2877 | *pp = p + 1; |
2878 | ||
c378eb4e | 2879 | /* This means we have a visibility for a field coming. */ |
c906108c SS |
2880 | if (**pp == '/') |
2881 | { | |
2882 | (*pp)++; | |
c5aa993b | 2883 | fip->list->visibility = *(*pp)++; |
c906108c SS |
2884 | } |
2885 | else | |
2886 | { | |
2887 | /* normal dbx-style format, no explicit visibility */ | |
c5aa993b | 2888 | fip->list->visibility = VISIBILITY_PUBLIC; |
c906108c SS |
2889 | } |
2890 | ||
c5aa993b | 2891 | fip->list->field.type = read_type (pp, objfile); |
c906108c SS |
2892 | if (**pp == ':') |
2893 | { | |
2894 | p = ++(*pp); | |
2895 | #if 0 | |
c378eb4e | 2896 | /* Possible future hook for nested types. */ |
c906108c SS |
2897 | if (**pp == '!') |
2898 | { | |
c5aa993b | 2899 | fip->list->field.bitpos = (long) -2; /* nested type */ |
c906108c SS |
2900 | p = ++(*pp); |
2901 | } | |
c5aa993b JM |
2902 | else |
2903 | ...; | |
c906108c | 2904 | #endif |
c5aa993b | 2905 | while (*p != ';') |
c906108c SS |
2906 | { |
2907 | p++; | |
2908 | } | |
2909 | /* Static class member. */ | |
2910 | SET_FIELD_PHYSNAME (fip->list->field, savestring (*pp, p - *pp)); | |
2911 | *pp = p + 1; | |
2912 | return; | |
2913 | } | |
2914 | else if (**pp != ',') | |
2915 | { | |
2916 | /* Bad structure-type format. */ | |
23136709 | 2917 | stabs_general_complaint ("bad structure-type format"); |
c906108c SS |
2918 | return; |
2919 | } | |
2920 | ||
2921 | (*pp)++; /* Skip the comma. */ | |
2922 | ||
2923 | { | |
2924 | int nbits; | |
433759f7 | 2925 | |
f41f5e61 PA |
2926 | SET_FIELD_BITPOS (fip->list->field, |
2927 | read_huge_number (pp, ',', &nbits, 0)); | |
c906108c SS |
2928 | if (nbits != 0) |
2929 | { | |
23136709 | 2930 | stabs_general_complaint ("bad structure-type format"); |
c906108c SS |
2931 | return; |
2932 | } | |
94e10a22 | 2933 | FIELD_BITSIZE (fip->list->field) = read_huge_number (pp, ';', &nbits, 0); |
c906108c SS |
2934 | if (nbits != 0) |
2935 | { | |
23136709 | 2936 | stabs_general_complaint ("bad structure-type format"); |
c906108c SS |
2937 | return; |
2938 | } | |
2939 | } | |
2940 | ||
2941 | if (FIELD_BITPOS (fip->list->field) == 0 | |
2942 | && FIELD_BITSIZE (fip->list->field) == 0) | |
2943 | { | |
2944 | /* This can happen in two cases: (1) at least for gcc 2.4.5 or so, | |
c5aa993b JM |
2945 | it is a field which has been optimized out. The correct stab for |
2946 | this case is to use VISIBILITY_IGNORE, but that is a recent | |
2947 | invention. (2) It is a 0-size array. For example | |
e2e0b3e5 | 2948 | union { int num; char str[0]; } foo. Printing _("<no value>" for |
c5aa993b JM |
2949 | str in "p foo" is OK, since foo.str (and thus foo.str[3]) |
2950 | will continue to work, and a 0-size array as a whole doesn't | |
2951 | have any contents to print. | |
2952 | ||
2953 | I suspect this probably could also happen with gcc -gstabs (not | |
2954 | -gstabs+) for static fields, and perhaps other C++ extensions. | |
2955 | Hopefully few people use -gstabs with gdb, since it is intended | |
2956 | for dbx compatibility. */ | |
c906108c SS |
2957 | |
2958 | /* Ignore this field. */ | |
c5aa993b | 2959 | fip->list->visibility = VISIBILITY_IGNORE; |
c906108c SS |
2960 | } |
2961 | else | |
2962 | { | |
2963 | /* Detect an unpacked field and mark it as such. | |
c5aa993b JM |
2964 | dbx gives a bit size for all fields. |
2965 | Note that forward refs cannot be packed, | |
2966 | and treat enums as if they had the width of ints. */ | |
c906108c SS |
2967 | |
2968 | struct type *field_type = check_typedef (FIELD_TYPE (fip->list->field)); | |
2969 | ||
2970 | if (TYPE_CODE (field_type) != TYPE_CODE_INT | |
2971 | && TYPE_CODE (field_type) != TYPE_CODE_RANGE | |
2972 | && TYPE_CODE (field_type) != TYPE_CODE_BOOL | |
2973 | && TYPE_CODE (field_type) != TYPE_CODE_ENUM) | |
2974 | { | |
2975 | FIELD_BITSIZE (fip->list->field) = 0; | |
2976 | } | |
c5aa993b | 2977 | if ((FIELD_BITSIZE (fip->list->field) |
c906108c SS |
2978 | == TARGET_CHAR_BIT * TYPE_LENGTH (field_type) |
2979 | || (TYPE_CODE (field_type) == TYPE_CODE_ENUM | |
9a76efb6 | 2980 | && FIELD_BITSIZE (fip->list->field) |
5e2b427d | 2981 | == gdbarch_int_bit (gdbarch)) |
c5aa993b | 2982 | ) |
c906108c SS |
2983 | && |
2984 | FIELD_BITPOS (fip->list->field) % 8 == 0) | |
2985 | { | |
2986 | FIELD_BITSIZE (fip->list->field) = 0; | |
2987 | } | |
2988 | } | |
2989 | } | |
2990 | ||
2991 | ||
2992 | /* Read struct or class data fields. They have the form: | |
2993 | ||
c5aa993b | 2994 | NAME : [VISIBILITY] TYPENUM , BITPOS , BITSIZE ; |
c906108c SS |
2995 | |
2996 | At the end, we see a semicolon instead of a field. | |
2997 | ||
2998 | In C++, this may wind up being NAME:?TYPENUM:PHYSNAME; for | |
2999 | a static field. | |
3000 | ||
3001 | The optional VISIBILITY is one of: | |
3002 | ||
c5aa993b JM |
3003 | '/0' (VISIBILITY_PRIVATE) |
3004 | '/1' (VISIBILITY_PROTECTED) | |
3005 | '/2' (VISIBILITY_PUBLIC) | |
3006 | '/9' (VISIBILITY_IGNORE) | |
c906108c SS |
3007 | |
3008 | or nothing, for C style fields with public visibility. | |
3009 | ||
3010 | Returns 1 for success, 0 for failure. */ | |
3011 | ||
3012 | static int | |
a121b7c1 | 3013 | read_struct_fields (struct field_info *fip, const char **pp, struct type *type, |
fba45db2 | 3014 | struct objfile *objfile) |
c906108c | 3015 | { |
a121b7c1 | 3016 | const char *p; |
fe978cb0 | 3017 | struct nextfield *newobj; |
c906108c SS |
3018 | |
3019 | /* We better set p right now, in case there are no fields at all... */ | |
3020 | ||
3021 | p = *pp; | |
3022 | ||
3023 | /* Read each data member type until we find the terminating ';' at the end of | |
3024 | the data member list, or break for some other reason such as finding the | |
c378eb4e | 3025 | start of the member function list. */ |
fedbd091 | 3026 | /* Stab string for structure/union does not end with two ';' in |
c378eb4e | 3027 | SUN C compiler 5.3 i.e. F6U2, hence check for end of string. */ |
c906108c | 3028 | |
fedbd091 | 3029 | while (**pp != ';' && **pp != '\0') |
c906108c | 3030 | { |
c906108c SS |
3031 | STABS_CONTINUE (pp, objfile); |
3032 | /* Get space to record the next field's data. */ | |
8d749320 | 3033 | newobj = XCNEW (struct nextfield); |
fe978cb0 | 3034 | make_cleanup (xfree, newobj); |
8d749320 | 3035 | |
fe978cb0 PA |
3036 | newobj->next = fip->list; |
3037 | fip->list = newobj; | |
c906108c SS |
3038 | |
3039 | /* Get the field name. */ | |
3040 | p = *pp; | |
3041 | ||
3042 | /* If is starts with CPLUS_MARKER it is a special abbreviation, | |
c5aa993b JM |
3043 | unless the CPLUS_MARKER is followed by an underscore, in |
3044 | which case it is just the name of an anonymous type, which we | |
3045 | should handle like any other type name. */ | |
c906108c SS |
3046 | |
3047 | if (is_cplus_marker (p[0]) && p[1] != '_') | |
3048 | { | |
3049 | if (!read_cpp_abbrev (fip, pp, type, objfile)) | |
3050 | return 0; | |
3051 | continue; | |
3052 | } | |
3053 | ||
3054 | /* Look for the ':' that separates the field name from the field | |
c5aa993b JM |
3055 | values. Data members are delimited by a single ':', while member |
3056 | functions are delimited by a pair of ':'s. When we hit the member | |
c378eb4e | 3057 | functions (if any), terminate scan loop and return. */ |
c906108c | 3058 | |
c5aa993b | 3059 | while (*p != ':' && *p != '\0') |
c906108c SS |
3060 | { |
3061 | p++; | |
3062 | } | |
3063 | if (*p == '\0') | |
3064 | return 0; | |
3065 | ||
3066 | /* Check to see if we have hit the member functions yet. */ | |
3067 | if (p[1] == ':') | |
3068 | { | |
3069 | break; | |
3070 | } | |
3071 | read_one_struct_field (fip, pp, p, type, objfile); | |
3072 | } | |
3073 | if (p[0] == ':' && p[1] == ':') | |
3074 | { | |
1b831c93 AC |
3075 | /* (the deleted) chill the list of fields: the last entry (at |
3076 | the head) is a partially constructed entry which we now | |
c378eb4e | 3077 | scrub. */ |
c5aa993b | 3078 | fip->list = fip->list->next; |
c906108c SS |
3079 | } |
3080 | return 1; | |
3081 | } | |
9846de1b | 3082 | /* *INDENT-OFF* */ |
c906108c SS |
3083 | /* The stabs for C++ derived classes contain baseclass information which |
3084 | is marked by a '!' character after the total size. This function is | |
3085 | called when we encounter the baseclass marker, and slurps up all the | |
3086 | baseclass information. | |
3087 | ||
3088 | Immediately following the '!' marker is the number of base classes that | |
3089 | the class is derived from, followed by information for each base class. | |
3090 | For each base class, there are two visibility specifiers, a bit offset | |
3091 | to the base class information within the derived class, a reference to | |
3092 | the type for the base class, and a terminating semicolon. | |
3093 | ||
3094 | A typical example, with two base classes, would be "!2,020,19;0264,21;". | |
3095 | ^^ ^ ^ ^ ^ ^ ^ | |
3096 | Baseclass information marker __________________|| | | | | | | | |
3097 | Number of baseclasses __________________________| | | | | | | | |
3098 | Visibility specifiers (2) ________________________| | | | | | | |
3099 | Offset in bits from start of class _________________| | | | | | |
3100 | Type number for base class ___________________________| | | | | |
3101 | Visibility specifiers (2) _______________________________| | | | |
3102 | Offset in bits from start of class ________________________| | | |
3103 | Type number of base class ____________________________________| | |
3104 | ||
3105 | Return 1 for success, 0 for (error-type-inducing) failure. */ | |
9846de1b | 3106 | /* *INDENT-ON* */ |
c906108c | 3107 | |
c5aa993b JM |
3108 | |
3109 | ||
c906108c | 3110 | static int |
a121b7c1 | 3111 | read_baseclasses (struct field_info *fip, const char **pp, struct type *type, |
fba45db2 | 3112 | struct objfile *objfile) |
c906108c SS |
3113 | { |
3114 | int i; | |
fe978cb0 | 3115 | struct nextfield *newobj; |
c906108c SS |
3116 | |
3117 | if (**pp != '!') | |
3118 | { | |
3119 | return 1; | |
3120 | } | |
3121 | else | |
3122 | { | |
c378eb4e | 3123 | /* Skip the '!' baseclass information marker. */ |
c906108c SS |
3124 | (*pp)++; |
3125 | } | |
3126 | ||
3127 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
3128 | { | |
3129 | int nbits; | |
433759f7 | 3130 | |
94e10a22 | 3131 | TYPE_N_BASECLASSES (type) = read_huge_number (pp, ',', &nbits, 0); |
c906108c SS |
3132 | if (nbits != 0) |
3133 | return 0; | |
3134 | } | |
3135 | ||
3136 | #if 0 | |
3137 | /* Some stupid compilers have trouble with the following, so break | |
3138 | it up into simpler expressions. */ | |
3139 | TYPE_FIELD_VIRTUAL_BITS (type) = (B_TYPE *) | |
3140 | TYPE_ALLOC (type, B_BYTES (TYPE_N_BASECLASSES (type))); | |
3141 | #else | |
3142 | { | |
3143 | int num_bytes = B_BYTES (TYPE_N_BASECLASSES (type)); | |
3144 | char *pointer; | |
3145 | ||
3146 | pointer = (char *) TYPE_ALLOC (type, num_bytes); | |
3147 | TYPE_FIELD_VIRTUAL_BITS (type) = (B_TYPE *) pointer; | |
3148 | } | |
3149 | #endif /* 0 */ | |
3150 | ||
3151 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), TYPE_N_BASECLASSES (type)); | |
3152 | ||
3153 | for (i = 0; i < TYPE_N_BASECLASSES (type); i++) | |
3154 | { | |
8d749320 | 3155 | newobj = XCNEW (struct nextfield); |
fe978cb0 | 3156 | make_cleanup (xfree, newobj); |
8d749320 | 3157 | |
fe978cb0 PA |
3158 | newobj->next = fip->list; |
3159 | fip->list = newobj; | |
3160 | FIELD_BITSIZE (newobj->field) = 0; /* This should be an unpacked | |
c378eb4e | 3161 | field! */ |
c906108c SS |
3162 | |
3163 | STABS_CONTINUE (pp, objfile); | |
3164 | switch (**pp) | |
3165 | { | |
c5aa993b | 3166 | case '0': |
c378eb4e | 3167 | /* Nothing to do. */ |
c5aa993b JM |
3168 | break; |
3169 | case '1': | |
3170 | SET_TYPE_FIELD_VIRTUAL (type, i); | |
3171 | break; | |
3172 | default: | |
3173 | /* Unknown character. Complain and treat it as non-virtual. */ | |
3174 | { | |
23136709 | 3175 | complaint (&symfile_complaints, |
3e43a32a MS |
3176 | _("Unknown virtual character `%c' for baseclass"), |
3177 | **pp); | |
c5aa993b | 3178 | } |
c906108c SS |
3179 | } |
3180 | ++(*pp); | |
3181 | ||
fe978cb0 PA |
3182 | newobj->visibility = *(*pp)++; |
3183 | switch (newobj->visibility) | |
c906108c | 3184 | { |
c5aa993b JM |
3185 | case VISIBILITY_PRIVATE: |
3186 | case VISIBILITY_PROTECTED: | |
3187 | case VISIBILITY_PUBLIC: | |
3188 | break; | |
3189 | default: | |
3190 | /* Bad visibility format. Complain and treat it as | |
3191 | public. */ | |
3192 | { | |
23136709 | 3193 | complaint (&symfile_complaints, |
e2e0b3e5 | 3194 | _("Unknown visibility `%c' for baseclass"), |
fe978cb0 PA |
3195 | newobj->visibility); |
3196 | newobj->visibility = VISIBILITY_PUBLIC; | |
c5aa993b | 3197 | } |
c906108c SS |
3198 | } |
3199 | ||
3200 | { | |
3201 | int nbits; | |
c5aa993b | 3202 | |
c906108c SS |
3203 | /* The remaining value is the bit offset of the portion of the object |
3204 | corresponding to this baseclass. Always zero in the absence of | |
3205 | multiple inheritance. */ | |
3206 | ||
fe978cb0 | 3207 | SET_FIELD_BITPOS (newobj->field, read_huge_number (pp, ',', &nbits, 0)); |
c906108c SS |
3208 | if (nbits != 0) |
3209 | return 0; | |
3210 | } | |
3211 | ||
3212 | /* The last piece of baseclass information is the type of the | |
c5aa993b | 3213 | base class. Read it, and remember it's type name as this |
c378eb4e | 3214 | field's name. */ |
c906108c | 3215 | |
fe978cb0 PA |
3216 | newobj->field.type = read_type (pp, objfile); |
3217 | newobj->field.name = type_name_no_tag (newobj->field.type); | |
c906108c | 3218 | |
c378eb4e | 3219 | /* Skip trailing ';' and bump count of number of fields seen. */ |
c906108c SS |
3220 | if (**pp == ';') |
3221 | (*pp)++; | |
3222 | else | |
3223 | return 0; | |
3224 | } | |
3225 | return 1; | |
3226 | } | |
3227 | ||
3228 | /* The tail end of stabs for C++ classes that contain a virtual function | |
3229 | pointer contains a tilde, a %, and a type number. | |
3230 | The type number refers to the base class (possibly this class itself) which | |
3231 | contains the vtable pointer for the current class. | |
3232 | ||
3233 | This function is called when we have parsed all the method declarations, | |
3234 | so we can look for the vptr base class info. */ | |
3235 | ||
3236 | static int | |
a121b7c1 | 3237 | read_tilde_fields (struct field_info *fip, const char **pp, struct type *type, |
fba45db2 | 3238 | struct objfile *objfile) |
c906108c | 3239 | { |
a121b7c1 | 3240 | const char *p; |
c906108c SS |
3241 | |
3242 | STABS_CONTINUE (pp, objfile); | |
3243 | ||
c378eb4e | 3244 | /* If we are positioned at a ';', then skip it. */ |
c906108c SS |
3245 | if (**pp == ';') |
3246 | { | |
3247 | (*pp)++; | |
3248 | } | |
3249 | ||
3250 | if (**pp == '~') | |
3251 | { | |
3252 | (*pp)++; | |
3253 | ||
3254 | if (**pp == '=' || **pp == '+' || **pp == '-') | |
3255 | { | |
3256 | /* Obsolete flags that used to indicate the presence | |
c378eb4e | 3257 | of constructors and/or destructors. */ |
c906108c SS |
3258 | (*pp)++; |
3259 | } | |
3260 | ||
3261 | /* Read either a '%' or the final ';'. */ | |
3262 | if (*(*pp)++ == '%') | |
3263 | { | |
3264 | /* The next number is the type number of the base class | |
3265 | (possibly our own class) which supplies the vtable for | |
3266 | this class. Parse it out, and search that class to find | |
3267 | its vtable pointer, and install those into TYPE_VPTR_BASETYPE | |
3268 | and TYPE_VPTR_FIELDNO. */ | |
3269 | ||
3270 | struct type *t; | |
3271 | int i; | |
3272 | ||
3273 | t = read_type (pp, objfile); | |
3274 | p = (*pp)++; | |
3275 | while (*p != '\0' && *p != ';') | |
3276 | { | |
3277 | p++; | |
3278 | } | |
3279 | if (*p == '\0') | |
3280 | { | |
3281 | /* Premature end of symbol. */ | |
3282 | return 0; | |
3283 | } | |
c5aa993b | 3284 | |
ae6ae975 | 3285 | set_type_vptr_basetype (type, t); |
c378eb4e | 3286 | if (type == t) /* Our own class provides vtbl ptr. */ |
c906108c SS |
3287 | { |
3288 | for (i = TYPE_NFIELDS (t) - 1; | |
3289 | i >= TYPE_N_BASECLASSES (t); | |
3290 | --i) | |
3291 | { | |
0d5cff50 | 3292 | const char *name = TYPE_FIELD_NAME (t, i); |
433759f7 | 3293 | |
8343f86c | 3294 | if (!strncmp (name, vptr_name, sizeof (vptr_name) - 2) |
74451869 | 3295 | && is_cplus_marker (name[sizeof (vptr_name) - 2])) |
c906108c | 3296 | { |
ae6ae975 | 3297 | set_type_vptr_fieldno (type, i); |
c906108c SS |
3298 | goto gotit; |
3299 | } | |
3300 | } | |
3301 | /* Virtual function table field not found. */ | |
23136709 | 3302 | complaint (&symfile_complaints, |
3e43a32a MS |
3303 | _("virtual function table pointer " |
3304 | "not found when defining class `%s'"), | |
23136709 | 3305 | TYPE_NAME (type)); |
c906108c SS |
3306 | return 0; |
3307 | } | |
3308 | else | |
3309 | { | |
ae6ae975 | 3310 | set_type_vptr_fieldno (type, TYPE_VPTR_FIELDNO (t)); |
c906108c SS |
3311 | } |
3312 | ||
c5aa993b | 3313 | gotit: |
c906108c SS |
3314 | *pp = p + 1; |
3315 | } | |
3316 | } | |
3317 | return 1; | |
3318 | } | |
3319 | ||
3320 | static int | |
aa1ee363 | 3321 | attach_fn_fields_to_type (struct field_info *fip, struct type *type) |
c906108c | 3322 | { |
52f0bd74 | 3323 | int n; |
c906108c SS |
3324 | |
3325 | for (n = TYPE_NFN_FIELDS (type); | |
c5aa993b JM |
3326 | fip->fnlist != NULL; |
3327 | fip->fnlist = fip->fnlist->next) | |
c906108c | 3328 | { |
c378eb4e | 3329 | --n; /* Circumvent Sun3 compiler bug. */ |
c5aa993b | 3330 | TYPE_FN_FIELDLISTS (type)[n] = fip->fnlist->fn_fieldlist; |
c906108c SS |
3331 | } |
3332 | return 1; | |
3333 | } | |
3334 | ||
c906108c SS |
3335 | /* Create the vector of fields, and record how big it is. |
3336 | We need this info to record proper virtual function table information | |
3337 | for this class's virtual functions. */ | |
3338 | ||
3339 | static int | |
aa1ee363 | 3340 | attach_fields_to_type (struct field_info *fip, struct type *type, |
fba45db2 | 3341 | struct objfile *objfile) |
c906108c | 3342 | { |
52f0bd74 AC |
3343 | int nfields = 0; |
3344 | int non_public_fields = 0; | |
3345 | struct nextfield *scan; | |
c906108c SS |
3346 | |
3347 | /* Count up the number of fields that we have, as well as taking note of | |
3348 | whether or not there are any non-public fields, which requires us to | |
3349 | allocate and build the private_field_bits and protected_field_bits | |
c378eb4e | 3350 | bitfields. */ |
c906108c | 3351 | |
c5aa993b | 3352 | for (scan = fip->list; scan != NULL; scan = scan->next) |
c906108c SS |
3353 | { |
3354 | nfields++; | |
c5aa993b | 3355 | if (scan->visibility != VISIBILITY_PUBLIC) |
c906108c SS |
3356 | { |
3357 | non_public_fields++; | |
3358 | } | |
3359 | } | |
3360 | ||
3361 | /* Now we know how many fields there are, and whether or not there are any | |
3362 | non-public fields. Record the field count, allocate space for the | |
c378eb4e | 3363 | array of fields, and create blank visibility bitfields if necessary. */ |
c906108c SS |
3364 | |
3365 | TYPE_NFIELDS (type) = nfields; | |
3366 | TYPE_FIELDS (type) = (struct field *) | |
3367 | TYPE_ALLOC (type, sizeof (struct field) * nfields); | |
3368 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields); | |
3369 | ||
3370 | if (non_public_fields) | |
3371 | { | |
3372 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
3373 | ||
3374 | TYPE_FIELD_PRIVATE_BITS (type) = | |
3375 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
3376 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
3377 | ||
3378 | TYPE_FIELD_PROTECTED_BITS (type) = | |
3379 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
3380 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
3381 | ||
3382 | TYPE_FIELD_IGNORE_BITS (type) = | |
3383 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
3384 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
3385 | } | |
3386 | ||
c378eb4e MS |
3387 | /* Copy the saved-up fields into the field vector. Start from the |
3388 | head of the list, adding to the tail of the field array, so that | |
3389 | they end up in the same order in the array in which they were | |
3390 | added to the list. */ | |
c906108c SS |
3391 | |
3392 | while (nfields-- > 0) | |
3393 | { | |
c5aa993b JM |
3394 | TYPE_FIELD (type, nfields) = fip->list->field; |
3395 | switch (fip->list->visibility) | |
c906108c | 3396 | { |
c5aa993b JM |
3397 | case VISIBILITY_PRIVATE: |
3398 | SET_TYPE_FIELD_PRIVATE (type, nfields); | |
3399 | break; | |
c906108c | 3400 | |
c5aa993b JM |
3401 | case VISIBILITY_PROTECTED: |
3402 | SET_TYPE_FIELD_PROTECTED (type, nfields); | |
3403 | break; | |
c906108c | 3404 | |
c5aa993b JM |
3405 | case VISIBILITY_IGNORE: |
3406 | SET_TYPE_FIELD_IGNORE (type, nfields); | |
3407 | break; | |
c906108c | 3408 | |
c5aa993b JM |
3409 | case VISIBILITY_PUBLIC: |
3410 | break; | |
c906108c | 3411 | |
c5aa993b JM |
3412 | default: |
3413 | /* Unknown visibility. Complain and treat it as public. */ | |
3414 | { | |
3e43a32a MS |
3415 | complaint (&symfile_complaints, |
3416 | _("Unknown visibility `%c' for field"), | |
23136709 | 3417 | fip->list->visibility); |
c5aa993b JM |
3418 | } |
3419 | break; | |
c906108c | 3420 | } |
c5aa993b | 3421 | fip->list = fip->list->next; |
c906108c SS |
3422 | } |
3423 | return 1; | |
3424 | } | |
3425 | ||
2ae1c2d2 | 3426 | |
2ae1c2d2 JB |
3427 | /* Complain that the compiler has emitted more than one definition for the |
3428 | structure type TYPE. */ | |
3429 | static void | |
3430 | complain_about_struct_wipeout (struct type *type) | |
3431 | { | |
0d5cff50 DE |
3432 | const char *name = ""; |
3433 | const char *kind = ""; | |
2ae1c2d2 JB |
3434 | |
3435 | if (TYPE_TAG_NAME (type)) | |
3436 | { | |
3437 | name = TYPE_TAG_NAME (type); | |
3438 | switch (TYPE_CODE (type)) | |
3439 | { | |
3440 | case TYPE_CODE_STRUCT: kind = "struct "; break; | |
3441 | case TYPE_CODE_UNION: kind = "union "; break; | |
3442 | case TYPE_CODE_ENUM: kind = "enum "; break; | |
3443 | default: kind = ""; | |
3444 | } | |
3445 | } | |
3446 | else if (TYPE_NAME (type)) | |
3447 | { | |
3448 | name = TYPE_NAME (type); | |
3449 | kind = ""; | |
3450 | } | |
3451 | else | |
3452 | { | |
3453 | name = "<unknown>"; | |
3454 | kind = ""; | |
3455 | } | |
3456 | ||
23136709 | 3457 | complaint (&symfile_complaints, |
e2e0b3e5 | 3458 | _("struct/union type gets multiply defined: %s%s"), kind, name); |
2ae1c2d2 JB |
3459 | } |
3460 | ||
621791b8 PM |
3461 | /* Set the length for all variants of a same main_type, which are |
3462 | connected in the closed chain. | |
3463 | ||
3464 | This is something that needs to be done when a type is defined *after* | |
3465 | some cross references to this type have already been read. Consider | |
3466 | for instance the following scenario where we have the following two | |
3467 | stabs entries: | |
3468 | ||
3469 | .stabs "t:p(0,21)=*(0,22)=k(0,23)=xsdummy:",160,0,28,-24 | |
3470 | .stabs "dummy:T(0,23)=s16x:(0,1),0,3[...]" | |
3471 | ||
3472 | A stubbed version of type dummy is created while processing the first | |
3473 | stabs entry. The length of that type is initially set to zero, since | |
3474 | it is unknown at this point. Also, a "constant" variation of type | |
3475 | "dummy" is created as well (this is the "(0,22)=k(0,23)" section of | |
3476 | the stabs line). | |
3477 | ||
3478 | The second stabs entry allows us to replace the stubbed definition | |
3479 | with the real definition. However, we still need to adjust the length | |
3480 | of the "constant" variation of that type, as its length was left | |
3481 | untouched during the main type replacement... */ | |
3482 | ||
3483 | static void | |
9e69f3b6 | 3484 | set_length_in_type_chain (struct type *type) |
621791b8 PM |
3485 | { |
3486 | struct type *ntype = TYPE_CHAIN (type); | |
3487 | ||
3488 | while (ntype != type) | |
3489 | { | |
3490 | if (TYPE_LENGTH(ntype) == 0) | |
3491 | TYPE_LENGTH (ntype) = TYPE_LENGTH (type); | |
3492 | else | |
3493 | complain_about_struct_wipeout (ntype); | |
3494 | ntype = TYPE_CHAIN (ntype); | |
3495 | } | |
3496 | } | |
2ae1c2d2 | 3497 | |
c906108c SS |
3498 | /* Read the description of a structure (or union type) and return an object |
3499 | describing the type. | |
3500 | ||
3501 | PP points to a character pointer that points to the next unconsumed token | |
b021a221 | 3502 | in the stabs string. For example, given stabs "A:T4=s4a:1,0,32;;", |
c906108c SS |
3503 | *PP will point to "4a:1,0,32;;". |
3504 | ||
3505 | TYPE points to an incomplete type that needs to be filled in. | |
3506 | ||
3507 | OBJFILE points to the current objfile from which the stabs information is | |
3508 | being read. (Note that it is redundant in that TYPE also contains a pointer | |
3509 | to this same objfile, so it might be a good idea to eliminate it. FIXME). | |
c5aa993b | 3510 | */ |
c906108c SS |
3511 | |
3512 | static struct type * | |
a121b7c1 | 3513 | read_struct_type (const char **pp, struct type *type, enum type_code type_code, |
2ae1c2d2 | 3514 | struct objfile *objfile) |
c906108c SS |
3515 | { |
3516 | struct cleanup *back_to; | |
3517 | struct field_info fi; | |
3518 | ||
3519 | fi.list = NULL; | |
3520 | fi.fnlist = NULL; | |
3521 | ||
2ae1c2d2 JB |
3522 | /* When describing struct/union/class types in stabs, G++ always drops |
3523 | all qualifications from the name. So if you've got: | |
3524 | struct A { ... struct B { ... }; ... }; | |
3525 | then G++ will emit stabs for `struct A::B' that call it simply | |
3526 | `struct B'. Obviously, if you've got a real top-level definition for | |
3527 | `struct B', or other nested definitions, this is going to cause | |
3528 | problems. | |
3529 | ||
3530 | Obviously, GDB can't fix this by itself, but it can at least avoid | |
3531 | scribbling on existing structure type objects when new definitions | |
3532 | appear. */ | |
3533 | if (! (TYPE_CODE (type) == TYPE_CODE_UNDEF | |
3534 | || TYPE_STUB (type))) | |
3535 | { | |
3536 | complain_about_struct_wipeout (type); | |
3537 | ||
3538 | /* It's probably best to return the type unchanged. */ | |
3539 | return type; | |
3540 | } | |
3541 | ||
c906108c SS |
3542 | back_to = make_cleanup (null_cleanup, 0); |
3543 | ||
3544 | INIT_CPLUS_SPECIFIC (type); | |
2ae1c2d2 | 3545 | TYPE_CODE (type) = type_code; |
876cecd0 | 3546 | TYPE_STUB (type) = 0; |
c906108c SS |
3547 | |
3548 | /* First comes the total size in bytes. */ | |
3549 | ||
3550 | { | |
3551 | int nbits; | |
433759f7 | 3552 | |
94e10a22 | 3553 | TYPE_LENGTH (type) = read_huge_number (pp, 0, &nbits, 0); |
c906108c | 3554 | if (nbits != 0) |
73b8d9da TT |
3555 | { |
3556 | do_cleanups (back_to); | |
3557 | return error_type (pp, objfile); | |
3558 | } | |
621791b8 | 3559 | set_length_in_type_chain (type); |
c906108c SS |
3560 | } |
3561 | ||
3562 | /* Now read the baseclasses, if any, read the regular C struct or C++ | |
3563 | class member fields, attach the fields to the type, read the C++ | |
3564 | member functions, attach them to the type, and then read any tilde | |
3e43a32a | 3565 | field (baseclass specifier for the class holding the main vtable). */ |
c906108c SS |
3566 | |
3567 | if (!read_baseclasses (&fi, pp, type, objfile) | |
3568 | || !read_struct_fields (&fi, pp, type, objfile) | |
3569 | || !attach_fields_to_type (&fi, type, objfile) | |
3570 | || !read_member_functions (&fi, pp, type, objfile) | |
3571 | || !attach_fn_fields_to_type (&fi, type) | |
3572 | || !read_tilde_fields (&fi, pp, type, objfile)) | |
3573 | { | |
3574 | type = error_type (pp, objfile); | |
3575 | } | |
3576 | ||
3577 | do_cleanups (back_to); | |
3578 | return (type); | |
3579 | } | |
3580 | ||
3581 | /* Read a definition of an array type, | |
3582 | and create and return a suitable type object. | |
3583 | Also creates a range type which represents the bounds of that | |
3584 | array. */ | |
3585 | ||
3586 | static struct type * | |
a121b7c1 | 3587 | read_array_type (const char **pp, struct type *type, |
fba45db2 | 3588 | struct objfile *objfile) |
c906108c SS |
3589 | { |
3590 | struct type *index_type, *element_type, *range_type; | |
3591 | int lower, upper; | |
3592 | int adjustable = 0; | |
3593 | int nbits; | |
3594 | ||
3595 | /* Format of an array type: | |
3596 | "ar<index type>;lower;upper;<array_contents_type>". | |
3597 | OS9000: "arlower,upper;<array_contents_type>". | |
3598 | ||
3599 | Fortran adjustable arrays use Adigits or Tdigits for lower or upper; | |
3600 | for these, produce a type like float[][]. */ | |
3601 | ||
c906108c SS |
3602 | { |
3603 | index_type = read_type (pp, objfile); | |
3604 | if (**pp != ';') | |
3605 | /* Improper format of array type decl. */ | |
3606 | return error_type (pp, objfile); | |
3607 | ++*pp; | |
3608 | } | |
3609 | ||
3610 | if (!(**pp >= '0' && **pp <= '9') && **pp != '-') | |
3611 | { | |
3612 | (*pp)++; | |
3613 | adjustable = 1; | |
3614 | } | |
94e10a22 | 3615 | lower = read_huge_number (pp, ';', &nbits, 0); |
cdecafbe | 3616 | |
c906108c SS |
3617 | if (nbits != 0) |
3618 | return error_type (pp, objfile); | |
3619 | ||
3620 | if (!(**pp >= '0' && **pp <= '9') && **pp != '-') | |
3621 | { | |
3622 | (*pp)++; | |
3623 | adjustable = 1; | |
3624 | } | |
94e10a22 | 3625 | upper = read_huge_number (pp, ';', &nbits, 0); |
c906108c SS |
3626 | if (nbits != 0) |
3627 | return error_type (pp, objfile); | |
c5aa993b | 3628 | |
c906108c SS |
3629 | element_type = read_type (pp, objfile); |
3630 | ||
3631 | if (adjustable) | |
3632 | { | |
3633 | lower = 0; | |
3634 | upper = -1; | |
3635 | } | |
3636 | ||
3637 | range_type = | |
0c9c3474 | 3638 | create_static_range_type ((struct type *) NULL, index_type, lower, upper); |
c906108c SS |
3639 | type = create_array_type (type, element_type, range_type); |
3640 | ||
3641 | return type; | |
3642 | } | |
3643 | ||
3644 | ||
3645 | /* Read a definition of an enumeration type, | |
3646 | and create and return a suitable type object. | |
3647 | Also defines the symbols that represent the values of the type. */ | |
3648 | ||
3649 | static struct type * | |
a121b7c1 | 3650 | read_enum_type (const char **pp, struct type *type, |
fba45db2 | 3651 | struct objfile *objfile) |
c906108c | 3652 | { |
5e2b427d | 3653 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
a121b7c1 | 3654 | const char *p; |
c906108c | 3655 | char *name; |
52f0bd74 AC |
3656 | long n; |
3657 | struct symbol *sym; | |
c906108c SS |
3658 | int nsyms = 0; |
3659 | struct pending **symlist; | |
3660 | struct pending *osyms, *syms; | |
3661 | int o_nsyms; | |
3662 | int nbits; | |
3663 | int unsigned_enum = 1; | |
3664 | ||
3665 | #if 0 | |
3666 | /* FIXME! The stabs produced by Sun CC merrily define things that ought | |
3667 | to be file-scope, between N_FN entries, using N_LSYM. What's a mother | |
3668 | to do? For now, force all enum values to file scope. */ | |
3669 | if (within_function) | |
3670 | symlist = &local_symbols; | |
3671 | else | |
3672 | #endif | |
3673 | symlist = &file_symbols; | |
3674 | osyms = *symlist; | |
3675 | o_nsyms = osyms ? osyms->nsyms : 0; | |
3676 | ||
c906108c SS |
3677 | /* The aix4 compiler emits an extra field before the enum members; |
3678 | my guess is it's a type of some sort. Just ignore it. */ | |
3679 | if (**pp == '-') | |
3680 | { | |
3681 | /* Skip over the type. */ | |
3682 | while (**pp != ':') | |
c5aa993b | 3683 | (*pp)++; |
c906108c SS |
3684 | |
3685 | /* Skip over the colon. */ | |
3686 | (*pp)++; | |
3687 | } | |
3688 | ||
3689 | /* Read the value-names and their values. | |
3690 | The input syntax is NAME:VALUE,NAME:VALUE, and so on. | |
3691 | A semicolon or comma instead of a NAME means the end. */ | |
3692 | while (**pp && **pp != ';' && **pp != ',') | |
3693 | { | |
3694 | STABS_CONTINUE (pp, objfile); | |
3695 | p = *pp; | |
c5aa993b JM |
3696 | while (*p != ':') |
3697 | p++; | |
224c3ddb | 3698 | name = (char *) obstack_copy0 (&objfile->objfile_obstack, *pp, p - *pp); |
c906108c | 3699 | *pp = p + 1; |
94e10a22 | 3700 | n = read_huge_number (pp, ',', &nbits, 0); |
c906108c SS |
3701 | if (nbits != 0) |
3702 | return error_type (pp, objfile); | |
3703 | ||
e623cf5d | 3704 | sym = allocate_symbol (objfile); |
3567439c | 3705 | SYMBOL_SET_LINKAGE_NAME (sym, name); |
f85f34ed TT |
3706 | SYMBOL_SET_LANGUAGE (sym, current_subfile->language, |
3707 | &objfile->objfile_obstack); | |
f1e6e072 | 3708 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
176620f1 | 3709 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
3710 | SYMBOL_VALUE (sym) = n; |
3711 | if (n < 0) | |
3712 | unsigned_enum = 0; | |
3713 | add_symbol_to_list (sym, symlist); | |
3714 | nsyms++; | |
3715 | } | |
3716 | ||
3717 | if (**pp == ';') | |
3718 | (*pp)++; /* Skip the semicolon. */ | |
3719 | ||
3720 | /* Now fill in the fields of the type-structure. */ | |
3721 | ||
5e2b427d | 3722 | TYPE_LENGTH (type) = gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT; |
621791b8 | 3723 | set_length_in_type_chain (type); |
c906108c | 3724 | TYPE_CODE (type) = TYPE_CODE_ENUM; |
876cecd0 | 3725 | TYPE_STUB (type) = 0; |
c906108c | 3726 | if (unsigned_enum) |
876cecd0 | 3727 | TYPE_UNSIGNED (type) = 1; |
c906108c SS |
3728 | TYPE_NFIELDS (type) = nsyms; |
3729 | TYPE_FIELDS (type) = (struct field *) | |
3730 | TYPE_ALLOC (type, sizeof (struct field) * nsyms); | |
3731 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nsyms); | |
3732 | ||
3733 | /* Find the symbols for the values and put them into the type. | |
3734 | The symbols can be found in the symlist that we put them on | |
3735 | to cause them to be defined. osyms contains the old value | |
3736 | of that symlist; everything up to there was defined by us. */ | |
3737 | /* Note that we preserve the order of the enum constants, so | |
3738 | that in something like "enum {FOO, LAST_THING=FOO}" we print | |
3739 | FOO, not LAST_THING. */ | |
3740 | ||
3741 | for (syms = *symlist, n = nsyms - 1; syms; syms = syms->next) | |
3742 | { | |
3743 | int last = syms == osyms ? o_nsyms : 0; | |
3744 | int j = syms->nsyms; | |
433759f7 | 3745 | |
c906108c SS |
3746 | for (; --j >= last; --n) |
3747 | { | |
3748 | struct symbol *xsym = syms->symbol[j]; | |
433759f7 | 3749 | |
c906108c | 3750 | SYMBOL_TYPE (xsym) = type; |
3567439c | 3751 | TYPE_FIELD_NAME (type, n) = SYMBOL_LINKAGE_NAME (xsym); |
14e75d8e | 3752 | SET_FIELD_ENUMVAL (TYPE_FIELD (type, n), SYMBOL_VALUE (xsym)); |
c906108c SS |
3753 | TYPE_FIELD_BITSIZE (type, n) = 0; |
3754 | } | |
3755 | if (syms == osyms) | |
3756 | break; | |
3757 | } | |
3758 | ||
3759 | return type; | |
3760 | } | |
3761 | ||
3762 | /* Sun's ACC uses a somewhat saner method for specifying the builtin | |
3763 | typedefs in every file (for int, long, etc): | |
3764 | ||
c5aa993b JM |
3765 | type = b <signed> <width> <format type>; <offset>; <nbits> |
3766 | signed = u or s. | |
3767 | optional format type = c or b for char or boolean. | |
3768 | offset = offset from high order bit to start bit of type. | |
3769 | width is # bytes in object of this type, nbits is # bits in type. | |
c906108c SS |
3770 | |
3771 | The width/offset stuff appears to be for small objects stored in | |
3772 | larger ones (e.g. `shorts' in `int' registers). We ignore it for now, | |
3773 | FIXME. */ | |
3774 | ||
3775 | static struct type * | |
a121b7c1 | 3776 | read_sun_builtin_type (const char **pp, int typenums[2], struct objfile *objfile) |
c906108c SS |
3777 | { |
3778 | int type_bits; | |
3779 | int nbits; | |
19f392bc UW |
3780 | int unsigned_type; |
3781 | int boolean_type = 0; | |
c906108c SS |
3782 | |
3783 | switch (**pp) | |
3784 | { | |
c5aa993b | 3785 | case 's': |
19f392bc | 3786 | unsigned_type = 0; |
c5aa993b JM |
3787 | break; |
3788 | case 'u': | |
19f392bc | 3789 | unsigned_type = 1; |
c5aa993b JM |
3790 | break; |
3791 | default: | |
3792 | return error_type (pp, objfile); | |
c906108c SS |
3793 | } |
3794 | (*pp)++; | |
3795 | ||
3796 | /* For some odd reason, all forms of char put a c here. This is strange | |
3797 | because no other type has this honor. We can safely ignore this because | |
3798 | we actually determine 'char'acterness by the number of bits specified in | |
3799 | the descriptor. | |
3800 | Boolean forms, e.g Fortran logical*X, put a b here. */ | |
3801 | ||
3802 | if (**pp == 'c') | |
3803 | (*pp)++; | |
3804 | else if (**pp == 'b') | |
3805 | { | |
19f392bc | 3806 | boolean_type = 1; |
c906108c SS |
3807 | (*pp)++; |
3808 | } | |
3809 | ||
3810 | /* The first number appears to be the number of bytes occupied | |
3811 | by this type, except that unsigned short is 4 instead of 2. | |
3812 | Since this information is redundant with the third number, | |
3813 | we will ignore it. */ | |
94e10a22 | 3814 | read_huge_number (pp, ';', &nbits, 0); |
c906108c SS |
3815 | if (nbits != 0) |
3816 | return error_type (pp, objfile); | |
3817 | ||
c378eb4e | 3818 | /* The second number is always 0, so ignore it too. */ |
94e10a22 | 3819 | read_huge_number (pp, ';', &nbits, 0); |
c906108c SS |
3820 | if (nbits != 0) |
3821 | return error_type (pp, objfile); | |
3822 | ||
c378eb4e | 3823 | /* The third number is the number of bits for this type. */ |
94e10a22 | 3824 | type_bits = read_huge_number (pp, 0, &nbits, 0); |
c906108c SS |
3825 | if (nbits != 0) |
3826 | return error_type (pp, objfile); | |
3827 | /* The type *should* end with a semicolon. If it are embedded | |
3828 | in a larger type the semicolon may be the only way to know where | |
3829 | the type ends. If this type is at the end of the stabstring we | |
3830 | can deal with the omitted semicolon (but we don't have to like | |
3831 | it). Don't bother to complain(), Sun's compiler omits the semicolon | |
3832 | for "void". */ | |
3833 | if (**pp == ';') | |
3834 | ++(*pp); | |
3835 | ||
3836 | if (type_bits == 0) | |
19f392bc | 3837 | { |
77b7c781 UW |
3838 | struct type *type = init_type (objfile, TYPE_CODE_VOID, |
3839 | TARGET_CHAR_BIT, NULL); | |
19f392bc UW |
3840 | if (unsigned_type) |
3841 | TYPE_UNSIGNED (type) = 1; | |
3842 | return type; | |
3843 | } | |
3844 | ||
3845 | if (boolean_type) | |
3846 | return init_boolean_type (objfile, type_bits, unsigned_type, NULL); | |
c906108c | 3847 | else |
19f392bc | 3848 | return init_integer_type (objfile, type_bits, unsigned_type, NULL); |
c906108c SS |
3849 | } |
3850 | ||
3851 | static struct type * | |
a121b7c1 PA |
3852 | read_sun_floating_type (const char **pp, int typenums[2], |
3853 | struct objfile *objfile) | |
c906108c SS |
3854 | { |
3855 | int nbits; | |
3856 | int details; | |
3857 | int nbytes; | |
f65ca430 | 3858 | struct type *rettype; |
c906108c SS |
3859 | |
3860 | /* The first number has more details about the type, for example | |
3861 | FN_COMPLEX. */ | |
94e10a22 | 3862 | details = read_huge_number (pp, ';', &nbits, 0); |
c906108c SS |
3863 | if (nbits != 0) |
3864 | return error_type (pp, objfile); | |
3865 | ||
c378eb4e | 3866 | /* The second number is the number of bytes occupied by this type. */ |
94e10a22 | 3867 | nbytes = read_huge_number (pp, ';', &nbits, 0); |
c906108c SS |
3868 | if (nbits != 0) |
3869 | return error_type (pp, objfile); | |
3870 | ||
19f392bc UW |
3871 | nbits = nbytes * TARGET_CHAR_BIT; |
3872 | ||
c906108c SS |
3873 | if (details == NF_COMPLEX || details == NF_COMPLEX16 |
3874 | || details == NF_COMPLEX32) | |
f65ca430 | 3875 | { |
9b790ce7 | 3876 | rettype = dbx_init_float_type (objfile, nbits / 2); |
19f392bc | 3877 | return init_complex_type (objfile, NULL, rettype); |
f65ca430 | 3878 | } |
c906108c | 3879 | |
9b790ce7 | 3880 | return dbx_init_float_type (objfile, nbits); |
c906108c SS |
3881 | } |
3882 | ||
3883 | /* Read a number from the string pointed to by *PP. | |
3884 | The value of *PP is advanced over the number. | |
3885 | If END is nonzero, the character that ends the | |
3886 | number must match END, or an error happens; | |
3887 | and that character is skipped if it does match. | |
3888 | If END is zero, *PP is left pointing to that character. | |
3889 | ||
94e10a22 JG |
3890 | If TWOS_COMPLEMENT_BITS is set to a strictly positive value and if |
3891 | the number is represented in an octal representation, assume that | |
3892 | it is represented in a 2's complement representation with a size of | |
3893 | TWOS_COMPLEMENT_BITS. | |
3894 | ||
c906108c SS |
3895 | If the number fits in a long, set *BITS to 0 and return the value. |
3896 | If not, set *BITS to be the number of bits in the number and return 0. | |
3897 | ||
3898 | If encounter garbage, set *BITS to -1 and return 0. */ | |
3899 | ||
c2d11a7d | 3900 | static long |
a121b7c1 PA |
3901 | read_huge_number (const char **pp, int end, int *bits, |
3902 | int twos_complement_bits) | |
c906108c | 3903 | { |
a121b7c1 | 3904 | const char *p = *pp; |
c906108c | 3905 | int sign = 1; |
51e9e0d4 | 3906 | int sign_bit = 0; |
c2d11a7d | 3907 | long n = 0; |
c906108c SS |
3908 | int radix = 10; |
3909 | char overflow = 0; | |
3910 | int nbits = 0; | |
3911 | int c; | |
c2d11a7d | 3912 | long upper_limit; |
a2699720 | 3913 | int twos_complement_representation = 0; |
c5aa993b | 3914 | |
c906108c SS |
3915 | if (*p == '-') |
3916 | { | |
3917 | sign = -1; | |
3918 | p++; | |
3919 | } | |
3920 | ||
3921 | /* Leading zero means octal. GCC uses this to output values larger | |
3922 | than an int (because that would be hard in decimal). */ | |
3923 | if (*p == '0') | |
3924 | { | |
3925 | radix = 8; | |
3926 | p++; | |
3927 | } | |
3928 | ||
a2699720 PA |
3929 | /* Skip extra zeros. */ |
3930 | while (*p == '0') | |
3931 | p++; | |
3932 | ||
3933 | if (sign > 0 && radix == 8 && twos_complement_bits > 0) | |
3934 | { | |
3935 | /* Octal, possibly signed. Check if we have enough chars for a | |
3936 | negative number. */ | |
3937 | ||
3938 | size_t len; | |
a121b7c1 | 3939 | const char *p1 = p; |
433759f7 | 3940 | |
a2699720 PA |
3941 | while ((c = *p1) >= '0' && c < '8') |
3942 | p1++; | |
3943 | ||
3944 | len = p1 - p; | |
3945 | if (len > twos_complement_bits / 3 | |
3e43a32a MS |
3946 | || (twos_complement_bits % 3 == 0 |
3947 | && len == twos_complement_bits / 3)) | |
a2699720 PA |
3948 | { |
3949 | /* Ok, we have enough characters for a signed value, check | |
3950 | for signness by testing if the sign bit is set. */ | |
3951 | sign_bit = (twos_complement_bits % 3 + 2) % 3; | |
3952 | c = *p - '0'; | |
3953 | if (c & (1 << sign_bit)) | |
3954 | { | |
3955 | /* Definitely signed. */ | |
3956 | twos_complement_representation = 1; | |
3957 | sign = -1; | |
3958 | } | |
3959 | } | |
3960 | } | |
3961 | ||
1b831c93 | 3962 | upper_limit = LONG_MAX / radix; |
c906108c SS |
3963 | |
3964 | while ((c = *p++) >= '0' && c < ('0' + radix)) | |
3965 | { | |
3966 | if (n <= upper_limit) | |
94e10a22 JG |
3967 | { |
3968 | if (twos_complement_representation) | |
3969 | { | |
a2699720 PA |
3970 | /* Octal, signed, twos complement representation. In |
3971 | this case, n is the corresponding absolute value. */ | |
3972 | if (n == 0) | |
3973 | { | |
3974 | long sn = c - '0' - ((2 * (c - '0')) | (2 << sign_bit)); | |
433759f7 | 3975 | |
a2699720 PA |
3976 | n = -sn; |
3977 | } | |
94e10a22 JG |
3978 | else |
3979 | { | |
a2699720 PA |
3980 | n *= radix; |
3981 | n -= c - '0'; | |
94e10a22 | 3982 | } |
94e10a22 JG |
3983 | } |
3984 | else | |
3985 | { | |
3986 | /* unsigned representation */ | |
3987 | n *= radix; | |
c378eb4e | 3988 | n += c - '0'; /* FIXME this overflows anyway. */ |
94e10a22 JG |
3989 | } |
3990 | } | |
c906108c | 3991 | else |
94e10a22 | 3992 | overflow = 1; |
c5aa993b | 3993 | |
c906108c | 3994 | /* This depends on large values being output in octal, which is |
c378eb4e | 3995 | what GCC does. */ |
c906108c SS |
3996 | if (radix == 8) |
3997 | { | |
3998 | if (nbits == 0) | |
3999 | { | |
4000 | if (c == '0') | |
4001 | /* Ignore leading zeroes. */ | |
4002 | ; | |
4003 | else if (c == '1') | |
4004 | nbits = 1; | |
4005 | else if (c == '2' || c == '3') | |
4006 | nbits = 2; | |
4007 | else | |
4008 | nbits = 3; | |
4009 | } | |
4010 | else | |
4011 | nbits += 3; | |
4012 | } | |
4013 | } | |
4014 | if (end) | |
4015 | { | |
4016 | if (c && c != end) | |
4017 | { | |
4018 | if (bits != NULL) | |
4019 | *bits = -1; | |
4020 | return 0; | |
4021 | } | |
4022 | } | |
4023 | else | |
4024 | --p; | |
4025 | ||
a2699720 PA |
4026 | if (radix == 8 && twos_complement_bits > 0 && nbits > twos_complement_bits) |
4027 | { | |
4028 | /* We were supposed to parse a number with maximum | |
4029 | TWOS_COMPLEMENT_BITS bits, but something went wrong. */ | |
4030 | if (bits != NULL) | |
4031 | *bits = -1; | |
4032 | return 0; | |
4033 | } | |
4034 | ||
c906108c SS |
4035 | *pp = p; |
4036 | if (overflow) | |
4037 | { | |
4038 | if (nbits == 0) | |
4039 | { | |
4040 | /* Large decimal constants are an error (because it is hard to | |
4041 | count how many bits are in them). */ | |
4042 | if (bits != NULL) | |
4043 | *bits = -1; | |
4044 | return 0; | |
4045 | } | |
c5aa993b | 4046 | |
c906108c | 4047 | /* -0x7f is the same as 0x80. So deal with it by adding one to |
a2699720 PA |
4048 | the number of bits. Two's complement represention octals |
4049 | can't have a '-' in front. */ | |
4050 | if (sign == -1 && !twos_complement_representation) | |
c906108c SS |
4051 | ++nbits; |
4052 | if (bits) | |
4053 | *bits = nbits; | |
4054 | } | |
4055 | else | |
4056 | { | |
4057 | if (bits) | |
4058 | *bits = 0; | |
a2699720 | 4059 | return n * sign; |
c906108c SS |
4060 | } |
4061 | /* It's *BITS which has the interesting information. */ | |
4062 | return 0; | |
4063 | } | |
4064 | ||
4065 | static struct type * | |
a121b7c1 | 4066 | read_range_type (const char **pp, int typenums[2], int type_size, |
94e10a22 | 4067 | struct objfile *objfile) |
c906108c | 4068 | { |
5e2b427d | 4069 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
a121b7c1 | 4070 | const char *orig_pp = *pp; |
c906108c | 4071 | int rangenums[2]; |
c2d11a7d | 4072 | long n2, n3; |
c906108c SS |
4073 | int n2bits, n3bits; |
4074 | int self_subrange; | |
4075 | struct type *result_type; | |
4076 | struct type *index_type = NULL; | |
4077 | ||
4078 | /* First comes a type we are a subrange of. | |
4079 | In C it is usually 0, 1 or the type being defined. */ | |
4080 | if (read_type_number (pp, rangenums) != 0) | |
4081 | return error_type (pp, objfile); | |
4082 | self_subrange = (rangenums[0] == typenums[0] && | |
4083 | rangenums[1] == typenums[1]); | |
4084 | ||
4085 | if (**pp == '=') | |
4086 | { | |
4087 | *pp = orig_pp; | |
4088 | index_type = read_type (pp, objfile); | |
4089 | } | |
4090 | ||
4091 | /* A semicolon should now follow; skip it. */ | |
4092 | if (**pp == ';') | |
4093 | (*pp)++; | |
4094 | ||
4095 | /* The remaining two operands are usually lower and upper bounds | |
4096 | of the range. But in some special cases they mean something else. */ | |
94e10a22 JG |
4097 | n2 = read_huge_number (pp, ';', &n2bits, type_size); |
4098 | n3 = read_huge_number (pp, ';', &n3bits, type_size); | |
c906108c SS |
4099 | |
4100 | if (n2bits == -1 || n3bits == -1) | |
4101 | return error_type (pp, objfile); | |
4102 | ||
4103 | if (index_type) | |
4104 | goto handle_true_range; | |
4105 | ||
4106 | /* If limits are huge, must be large integral type. */ | |
4107 | if (n2bits != 0 || n3bits != 0) | |
4108 | { | |
4109 | char got_signed = 0; | |
4110 | char got_unsigned = 0; | |
4111 | /* Number of bits in the type. */ | |
4112 | int nbits = 0; | |
4113 | ||
94e10a22 | 4114 | /* If a type size attribute has been specified, the bounds of |
c378eb4e | 4115 | the range should fit in this size. If the lower bounds needs |
94e10a22 JG |
4116 | more bits than the upper bound, then the type is signed. */ |
4117 | if (n2bits <= type_size && n3bits <= type_size) | |
4118 | { | |
4119 | if (n2bits == type_size && n2bits > n3bits) | |
4120 | got_signed = 1; | |
4121 | else | |
4122 | got_unsigned = 1; | |
4123 | nbits = type_size; | |
4124 | } | |
c906108c | 4125 | /* Range from 0 to <large number> is an unsigned large integral type. */ |
94e10a22 | 4126 | else if ((n2bits == 0 && n2 == 0) && n3bits != 0) |
c906108c SS |
4127 | { |
4128 | got_unsigned = 1; | |
4129 | nbits = n3bits; | |
4130 | } | |
4131 | /* Range from <large number> to <large number>-1 is a large signed | |
c5aa993b JM |
4132 | integral type. Take care of the case where <large number> doesn't |
4133 | fit in a long but <large number>-1 does. */ | |
c906108c SS |
4134 | else if ((n2bits != 0 && n3bits != 0 && n2bits == n3bits + 1) |
4135 | || (n2bits != 0 && n3bits == 0 | |
c2d11a7d JM |
4136 | && (n2bits == sizeof (long) * HOST_CHAR_BIT) |
4137 | && n3 == LONG_MAX)) | |
c906108c SS |
4138 | { |
4139 | got_signed = 1; | |
4140 | nbits = n2bits; | |
4141 | } | |
4142 | ||
4143 | if (got_signed || got_unsigned) | |
19f392bc | 4144 | return init_integer_type (objfile, nbits, got_unsigned, NULL); |
c906108c SS |
4145 | else |
4146 | return error_type (pp, objfile); | |
4147 | } | |
4148 | ||
4149 | /* A type defined as a subrange of itself, with bounds both 0, is void. */ | |
4150 | if (self_subrange && n2 == 0 && n3 == 0) | |
77b7c781 | 4151 | return init_type (objfile, TYPE_CODE_VOID, TARGET_CHAR_BIT, NULL); |
c906108c SS |
4152 | |
4153 | /* If n3 is zero and n2 is positive, we want a floating type, and n2 | |
4154 | is the width in bytes. | |
4155 | ||
4156 | Fortran programs appear to use this for complex types also. To | |
4157 | distinguish between floats and complex, g77 (and others?) seem | |
4158 | to use self-subranges for the complexes, and subranges of int for | |
4159 | the floats. | |
4160 | ||
4161 | Also note that for complexes, g77 sets n2 to the size of one of | |
4162 | the member floats, not the whole complex beast. My guess is that | |
c378eb4e | 4163 | this was to work well with pre-COMPLEX versions of gdb. */ |
c906108c SS |
4164 | |
4165 | if (n3 == 0 && n2 > 0) | |
4166 | { | |
1300f5dd | 4167 | struct type *float_type |
9b790ce7 | 4168 | = dbx_init_float_type (objfile, n2 * TARGET_CHAR_BIT); |
1300f5dd | 4169 | |
c906108c | 4170 | if (self_subrange) |
19f392bc | 4171 | return init_complex_type (objfile, NULL, float_type); |
c906108c | 4172 | else |
1300f5dd | 4173 | return float_type; |
c906108c SS |
4174 | } |
4175 | ||
a2699720 | 4176 | /* If the upper bound is -1, it must really be an unsigned integral. */ |
c906108c SS |
4177 | |
4178 | else if (n2 == 0 && n3 == -1) | |
4179 | { | |
a2699720 | 4180 | int bits = type_size; |
433759f7 | 4181 | |
a2699720 PA |
4182 | if (bits <= 0) |
4183 | { | |
4184 | /* We don't know its size. It is unsigned int or unsigned | |
4185 | long. GCC 2.3.3 uses this for long long too, but that is | |
4186 | just a GDB 3.5 compatibility hack. */ | |
5e2b427d | 4187 | bits = gdbarch_int_bit (gdbarch); |
a2699720 PA |
4188 | } |
4189 | ||
19f392bc | 4190 | return init_integer_type (objfile, bits, 1, NULL); |
c906108c SS |
4191 | } |
4192 | ||
4193 | /* Special case: char is defined (Who knows why) as a subrange of | |
4194 | itself with range 0-127. */ | |
4195 | else if (self_subrange && n2 == 0 && n3 == 127) | |
19f392bc | 4196 | { |
77b7c781 UW |
4197 | struct type *type = init_integer_type (objfile, TARGET_CHAR_BIT, |
4198 | 0, NULL); | |
19f392bc UW |
4199 | TYPE_NOSIGN (type) = 1; |
4200 | return type; | |
4201 | } | |
c906108c SS |
4202 | /* We used to do this only for subrange of self or subrange of int. */ |
4203 | else if (n2 == 0) | |
4204 | { | |
a0b3c4fd JM |
4205 | /* -1 is used for the upper bound of (4 byte) "unsigned int" and |
4206 | "unsigned long", and we already checked for that, | |
4207 | so don't need to test for it here. */ | |
4208 | ||
c906108c SS |
4209 | if (n3 < 0) |
4210 | /* n3 actually gives the size. */ | |
19f392bc | 4211 | return init_integer_type (objfile, -n3 * TARGET_CHAR_BIT, 1, NULL); |
c906108c | 4212 | |
7be570e7 | 4213 | /* Is n3 == 2**(8n)-1 for some integer n? Then it's an |
a0b3c4fd JM |
4214 | unsigned n-byte integer. But do require n to be a power of |
4215 | two; we don't want 3- and 5-byte integers flying around. */ | |
4216 | { | |
4217 | int bytes; | |
4218 | unsigned long bits; | |
4219 | ||
4220 | bits = n3; | |
4221 | for (bytes = 0; (bits & 0xff) == 0xff; bytes++) | |
4222 | bits >>= 8; | |
4223 | if (bits == 0 | |
4224 | && ((bytes - 1) & bytes) == 0) /* "bytes is a power of two" */ | |
19f392bc | 4225 | return init_integer_type (objfile, bytes * TARGET_CHAR_BIT, 1, NULL); |
a0b3c4fd | 4226 | } |
c906108c SS |
4227 | } |
4228 | /* I think this is for Convex "long long". Since I don't know whether | |
4229 | Convex sets self_subrange, I also accept that particular size regardless | |
4230 | of self_subrange. */ | |
4231 | else if (n3 == 0 && n2 < 0 | |
4232 | && (self_subrange | |
9a76efb6 | 4233 | || n2 == -gdbarch_long_long_bit |
5e2b427d | 4234 | (gdbarch) / TARGET_CHAR_BIT)) |
19f392bc | 4235 | return init_integer_type (objfile, -n2 * TARGET_CHAR_BIT, 0, NULL); |
c5aa993b | 4236 | else if (n2 == -n3 - 1) |
c906108c SS |
4237 | { |
4238 | if (n3 == 0x7f) | |
19f392bc | 4239 | return init_integer_type (objfile, 8, 0, NULL); |
c906108c | 4240 | if (n3 == 0x7fff) |
19f392bc | 4241 | return init_integer_type (objfile, 16, 0, NULL); |
c906108c | 4242 | if (n3 == 0x7fffffff) |
19f392bc | 4243 | return init_integer_type (objfile, 32, 0, NULL); |
c906108c SS |
4244 | } |
4245 | ||
4246 | /* We have a real range type on our hands. Allocate space and | |
4247 | return a real pointer. */ | |
c5aa993b | 4248 | handle_true_range: |
c906108c SS |
4249 | |
4250 | if (self_subrange) | |
46bf5051 | 4251 | index_type = objfile_type (objfile)->builtin_int; |
c906108c | 4252 | else |
46bf5051 | 4253 | index_type = *dbx_lookup_type (rangenums, objfile); |
c906108c SS |
4254 | if (index_type == NULL) |
4255 | { | |
4256 | /* Does this actually ever happen? Is that why we are worrying | |
4257 | about dealing with it rather than just calling error_type? */ | |
4258 | ||
23136709 | 4259 | complaint (&symfile_complaints, |
e2e0b3e5 | 4260 | _("base type %d of range type is not defined"), rangenums[1]); |
5e2b427d | 4261 | |
46bf5051 | 4262 | index_type = objfile_type (objfile)->builtin_int; |
c906108c SS |
4263 | } |
4264 | ||
0c9c3474 SA |
4265 | result_type |
4266 | = create_static_range_type ((struct type *) NULL, index_type, n2, n3); | |
c906108c SS |
4267 | return (result_type); |
4268 | } | |
4269 | ||
4270 | /* Read in an argument list. This is a list of types, separated by commas | |
0a029df5 DJ |
4271 | and terminated with END. Return the list of types read in, or NULL |
4272 | if there is an error. */ | |
c906108c | 4273 | |
ad2f7632 | 4274 | static struct field * |
a121b7c1 | 4275 | read_args (const char **pp, int end, struct objfile *objfile, int *nargsp, |
ad2f7632 | 4276 | int *varargsp) |
c906108c SS |
4277 | { |
4278 | /* FIXME! Remove this arbitrary limit! */ | |
c378eb4e | 4279 | struct type *types[1024]; /* Allow for fns of 1023 parameters. */ |
ad2f7632 DJ |
4280 | int n = 0, i; |
4281 | struct field *rval; | |
c906108c SS |
4282 | |
4283 | while (**pp != end) | |
4284 | { | |
4285 | if (**pp != ',') | |
4286 | /* Invalid argument list: no ','. */ | |
0a029df5 | 4287 | return NULL; |
c906108c SS |
4288 | (*pp)++; |
4289 | STABS_CONTINUE (pp, objfile); | |
4290 | types[n++] = read_type (pp, objfile); | |
4291 | } | |
c378eb4e | 4292 | (*pp)++; /* get past `end' (the ':' character). */ |
c906108c | 4293 | |
d24d8548 JK |
4294 | if (n == 0) |
4295 | { | |
4296 | /* We should read at least the THIS parameter here. Some broken stabs | |
4297 | output contained `(0,41),(0,42)=@s8;-16;,(0,43),(0,1);' where should | |
4298 | have been present ";-16,(0,43)" reference instead. This way the | |
4299 | excessive ";" marker prematurely stops the parameters parsing. */ | |
4300 | ||
4301 | complaint (&symfile_complaints, _("Invalid (empty) method arguments")); | |
4302 | *varargsp = 0; | |
4303 | } | |
4304 | else if (TYPE_CODE (types[n - 1]) != TYPE_CODE_VOID) | |
ad2f7632 | 4305 | *varargsp = 1; |
c906108c SS |
4306 | else |
4307 | { | |
ad2f7632 DJ |
4308 | n--; |
4309 | *varargsp = 0; | |
c906108c | 4310 | } |
ad2f7632 | 4311 | |
8d749320 | 4312 | rval = XCNEWVEC (struct field, n); |
ad2f7632 DJ |
4313 | for (i = 0; i < n; i++) |
4314 | rval[i].type = types[i]; | |
4315 | *nargsp = n; | |
c906108c SS |
4316 | return rval; |
4317 | } | |
4318 | \f | |
4319 | /* Common block handling. */ | |
4320 | ||
4321 | /* List of symbols declared since the last BCOMM. This list is a tail | |
4322 | of local_symbols. When ECOMM is seen, the symbols on the list | |
4323 | are noted so their proper addresses can be filled in later, | |
4324 | using the common block base address gotten from the assembler | |
4325 | stabs. */ | |
4326 | ||
4327 | static struct pending *common_block; | |
4328 | static int common_block_i; | |
4329 | ||
4330 | /* Name of the current common block. We get it from the BCOMM instead of the | |
4331 | ECOMM to match IBM documentation (even though IBM puts the name both places | |
4332 | like everyone else). */ | |
4333 | static char *common_block_name; | |
4334 | ||
4335 | /* Process a N_BCOMM symbol. The storage for NAME is not guaranteed | |
4336 | to remain after this function returns. */ | |
4337 | ||
4338 | void | |
a121b7c1 | 4339 | common_block_start (const char *name, struct objfile *objfile) |
c906108c SS |
4340 | { |
4341 | if (common_block_name != NULL) | |
4342 | { | |
23136709 | 4343 | complaint (&symfile_complaints, |
e2e0b3e5 | 4344 | _("Invalid symbol data: common block within common block")); |
c906108c SS |
4345 | } |
4346 | common_block = local_symbols; | |
4347 | common_block_i = local_symbols ? local_symbols->nsyms : 0; | |
224c3ddb SM |
4348 | common_block_name = (char *) obstack_copy0 (&objfile->objfile_obstack, name, |
4349 | strlen (name)); | |
c906108c SS |
4350 | } |
4351 | ||
4352 | /* Process a N_ECOMM symbol. */ | |
4353 | ||
4354 | void | |
fba45db2 | 4355 | common_block_end (struct objfile *objfile) |
c906108c SS |
4356 | { |
4357 | /* Symbols declared since the BCOMM are to have the common block | |
4358 | start address added in when we know it. common_block and | |
4359 | common_block_i point to the first symbol after the BCOMM in | |
4360 | the local_symbols list; copy the list and hang it off the | |
4361 | symbol for the common block name for later fixup. */ | |
4362 | int i; | |
4363 | struct symbol *sym; | |
fe978cb0 | 4364 | struct pending *newobj = 0; |
c906108c SS |
4365 | struct pending *next; |
4366 | int j; | |
4367 | ||
4368 | if (common_block_name == NULL) | |
4369 | { | |
e2e0b3e5 | 4370 | complaint (&symfile_complaints, _("ECOMM symbol unmatched by BCOMM")); |
c906108c SS |
4371 | return; |
4372 | } | |
4373 | ||
e623cf5d | 4374 | sym = allocate_symbol (objfile); |
c378eb4e | 4375 | /* Note: common_block_name already saved on objfile_obstack. */ |
3567439c | 4376 | SYMBOL_SET_LINKAGE_NAME (sym, common_block_name); |
f1e6e072 | 4377 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
c906108c SS |
4378 | |
4379 | /* Now we copy all the symbols which have been defined since the BCOMM. */ | |
4380 | ||
4381 | /* Copy all the struct pendings before common_block. */ | |
4382 | for (next = local_symbols; | |
4383 | next != NULL && next != common_block; | |
4384 | next = next->next) | |
4385 | { | |
4386 | for (j = 0; j < next->nsyms; j++) | |
fe978cb0 | 4387 | add_symbol_to_list (next->symbol[j], &newobj); |
c906108c SS |
4388 | } |
4389 | ||
4390 | /* Copy however much of COMMON_BLOCK we need. If COMMON_BLOCK is | |
4391 | NULL, it means copy all the local symbols (which we already did | |
4392 | above). */ | |
4393 | ||
4394 | if (common_block != NULL) | |
4395 | for (j = common_block_i; j < common_block->nsyms; j++) | |
fe978cb0 | 4396 | add_symbol_to_list (common_block->symbol[j], &newobj); |
c906108c | 4397 | |
fe978cb0 | 4398 | SYMBOL_TYPE (sym) = (struct type *) newobj; |
c906108c SS |
4399 | |
4400 | /* Should we be putting local_symbols back to what it was? | |
4401 | Does it matter? */ | |
4402 | ||
3567439c | 4403 | i = hashname (SYMBOL_LINKAGE_NAME (sym)); |
c906108c SS |
4404 | SYMBOL_VALUE_CHAIN (sym) = global_sym_chain[i]; |
4405 | global_sym_chain[i] = sym; | |
4406 | common_block_name = NULL; | |
4407 | } | |
4408 | ||
4409 | /* Add a common block's start address to the offset of each symbol | |
4410 | declared to be in it (by being between a BCOMM/ECOMM pair that uses | |
4411 | the common block name). */ | |
4412 | ||
4413 | static void | |
46cb6474 | 4414 | fix_common_block (struct symbol *sym, CORE_ADDR valu) |
c906108c SS |
4415 | { |
4416 | struct pending *next = (struct pending *) SYMBOL_TYPE (sym); | |
433759f7 | 4417 | |
c5aa993b | 4418 | for (; next; next = next->next) |
c906108c | 4419 | { |
aa1ee363 | 4420 | int j; |
433759f7 | 4421 | |
c906108c SS |
4422 | for (j = next->nsyms - 1; j >= 0; j--) |
4423 | SYMBOL_VALUE_ADDRESS (next->symbol[j]) += valu; | |
4424 | } | |
4425 | } | |
c5aa993b | 4426 | \f |
c906108c SS |
4427 | |
4428 | ||
bf362611 JB |
4429 | /* Add {TYPE, TYPENUMS} to the NONAME_UNDEFS vector. |
4430 | See add_undefined_type for more details. */ | |
c906108c | 4431 | |
a7a48797 | 4432 | static void |
bf362611 JB |
4433 | add_undefined_type_noname (struct type *type, int typenums[2]) |
4434 | { | |
4435 | struct nat nat; | |
4436 | ||
4437 | nat.typenums[0] = typenums [0]; | |
4438 | nat.typenums[1] = typenums [1]; | |
4439 | nat.type = type; | |
4440 | ||
4441 | if (noname_undefs_length == noname_undefs_allocated) | |
4442 | { | |
4443 | noname_undefs_allocated *= 2; | |
4444 | noname_undefs = (struct nat *) | |
4445 | xrealloc ((char *) noname_undefs, | |
4446 | noname_undefs_allocated * sizeof (struct nat)); | |
4447 | } | |
4448 | noname_undefs[noname_undefs_length++] = nat; | |
4449 | } | |
4450 | ||
4451 | /* Add TYPE to the UNDEF_TYPES vector. | |
4452 | See add_undefined_type for more details. */ | |
4453 | ||
4454 | static void | |
4455 | add_undefined_type_1 (struct type *type) | |
c906108c SS |
4456 | { |
4457 | if (undef_types_length == undef_types_allocated) | |
4458 | { | |
4459 | undef_types_allocated *= 2; | |
4460 | undef_types = (struct type **) | |
4461 | xrealloc ((char *) undef_types, | |
4462 | undef_types_allocated * sizeof (struct type *)); | |
4463 | } | |
4464 | undef_types[undef_types_length++] = type; | |
4465 | } | |
4466 | ||
bf362611 JB |
4467 | /* What about types defined as forward references inside of a small lexical |
4468 | scope? */ | |
4469 | /* Add a type to the list of undefined types to be checked through | |
4470 | once this file has been read in. | |
4471 | ||
4472 | In practice, we actually maintain two such lists: The first list | |
4473 | (UNDEF_TYPES) is used for types whose name has been provided, and | |
4474 | concerns forward references (eg 'xs' or 'xu' forward references); | |
4475 | the second list (NONAME_UNDEFS) is used for types whose name is | |
4476 | unknown at creation time, because they were referenced through | |
4477 | their type number before the actual type was declared. | |
4478 | This function actually adds the given type to the proper list. */ | |
4479 | ||
4480 | static void | |
4481 | add_undefined_type (struct type *type, int typenums[2]) | |
4482 | { | |
4483 | if (TYPE_TAG_NAME (type) == NULL) | |
4484 | add_undefined_type_noname (type, typenums); | |
4485 | else | |
4486 | add_undefined_type_1 (type); | |
4487 | } | |
4488 | ||
4489 | /* Try to fix all undefined types pushed on the UNDEF_TYPES vector. */ | |
4490 | ||
2c0b251b | 4491 | static void |
46bf5051 | 4492 | cleanup_undefined_types_noname (struct objfile *objfile) |
bf362611 JB |
4493 | { |
4494 | int i; | |
4495 | ||
4496 | for (i = 0; i < noname_undefs_length; i++) | |
4497 | { | |
4498 | struct nat nat = noname_undefs[i]; | |
4499 | struct type **type; | |
4500 | ||
46bf5051 | 4501 | type = dbx_lookup_type (nat.typenums, objfile); |
bf362611 | 4502 | if (nat.type != *type && TYPE_CODE (*type) != TYPE_CODE_UNDEF) |
56953f80 JB |
4503 | { |
4504 | /* The instance flags of the undefined type are still unset, | |
4505 | and needs to be copied over from the reference type. | |
4506 | Since replace_type expects them to be identical, we need | |
4507 | to set these flags manually before hand. */ | |
4508 | TYPE_INSTANCE_FLAGS (nat.type) = TYPE_INSTANCE_FLAGS (*type); | |
4509 | replace_type (nat.type, *type); | |
4510 | } | |
bf362611 JB |
4511 | } |
4512 | ||
4513 | noname_undefs_length = 0; | |
4514 | } | |
4515 | ||
c906108c SS |
4516 | /* Go through each undefined type, see if it's still undefined, and fix it |
4517 | up if possible. We have two kinds of undefined types: | |
4518 | ||
4519 | TYPE_CODE_ARRAY: Array whose target type wasn't defined yet. | |
c5aa993b JM |
4520 | Fix: update array length using the element bounds |
4521 | and the target type's length. | |
c906108c | 4522 | TYPE_CODE_STRUCT, TYPE_CODE_UNION: Structure whose fields were not |
c5aa993b JM |
4523 | yet defined at the time a pointer to it was made. |
4524 | Fix: Do a full lookup on the struct/union tag. */ | |
bf362611 | 4525 | |
2c0b251b | 4526 | static void |
bf362611 | 4527 | cleanup_undefined_types_1 (void) |
c906108c SS |
4528 | { |
4529 | struct type **type; | |
4530 | ||
9e386756 JB |
4531 | /* Iterate over every undefined type, and look for a symbol whose type |
4532 | matches our undefined type. The symbol matches if: | |
4533 | 1. It is a typedef in the STRUCT domain; | |
4534 | 2. It has the same name, and same type code; | |
4535 | 3. The instance flags are identical. | |
4536 | ||
4537 | It is important to check the instance flags, because we have seen | |
4538 | examples where the debug info contained definitions such as: | |
4539 | ||
4540 | "foo_t:t30=B31=xefoo_t:" | |
4541 | ||
4542 | In this case, we have created an undefined type named "foo_t" whose | |
4543 | instance flags is null (when processing "xefoo_t"), and then created | |
4544 | another type with the same name, but with different instance flags | |
4545 | ('B' means volatile). I think that the definition above is wrong, | |
4546 | since the same type cannot be volatile and non-volatile at the same | |
4547 | time, but we need to be able to cope with it when it happens. The | |
4548 | approach taken here is to treat these two types as different. */ | |
4549 | ||
c906108c SS |
4550 | for (type = undef_types; type < undef_types + undef_types_length; type++) |
4551 | { | |
4552 | switch (TYPE_CODE (*type)) | |
4553 | { | |
4554 | ||
c5aa993b JM |
4555 | case TYPE_CODE_STRUCT: |
4556 | case TYPE_CODE_UNION: | |
4557 | case TYPE_CODE_ENUM: | |
c906108c SS |
4558 | { |
4559 | /* Check if it has been defined since. Need to do this here | |
4560 | as well as in check_typedef to deal with the (legitimate in | |
4561 | C though not C++) case of several types with the same name | |
4562 | in different source files. */ | |
74a9bb82 | 4563 | if (TYPE_STUB (*type)) |
c906108c SS |
4564 | { |
4565 | struct pending *ppt; | |
4566 | int i; | |
c378eb4e | 4567 | /* Name of the type, without "struct" or "union". */ |
fe978cb0 | 4568 | const char *type_name = TYPE_TAG_NAME (*type); |
c906108c | 4569 | |
fe978cb0 | 4570 | if (type_name == NULL) |
c906108c | 4571 | { |
e2e0b3e5 | 4572 | complaint (&symfile_complaints, _("need a type name")); |
c906108c SS |
4573 | break; |
4574 | } | |
4575 | for (ppt = file_symbols; ppt; ppt = ppt->next) | |
4576 | { | |
4577 | for (i = 0; i < ppt->nsyms; i++) | |
4578 | { | |
4579 | struct symbol *sym = ppt->symbol[i]; | |
c5aa993b | 4580 | |
c906108c | 4581 | if (SYMBOL_CLASS (sym) == LOC_TYPEDEF |
176620f1 | 4582 | && SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN |
c906108c SS |
4583 | && (TYPE_CODE (SYMBOL_TYPE (sym)) == |
4584 | TYPE_CODE (*type)) | |
9e386756 JB |
4585 | && (TYPE_INSTANCE_FLAGS (*type) == |
4586 | TYPE_INSTANCE_FLAGS (SYMBOL_TYPE (sym))) | |
3567439c | 4587 | && strcmp (SYMBOL_LINKAGE_NAME (sym), |
fe978cb0 | 4588 | type_name) == 0) |
13a393b0 | 4589 | replace_type (*type, SYMBOL_TYPE (sym)); |
c906108c SS |
4590 | } |
4591 | } | |
4592 | } | |
4593 | } | |
4594 | break; | |
4595 | ||
4596 | default: | |
4597 | { | |
23136709 | 4598 | complaint (&symfile_complaints, |
e2e0b3e5 AC |
4599 | _("forward-referenced types left unresolved, " |
4600 | "type code %d."), | |
23136709 | 4601 | TYPE_CODE (*type)); |
c906108c SS |
4602 | } |
4603 | break; | |
4604 | } | |
4605 | } | |
4606 | ||
4607 | undef_types_length = 0; | |
4608 | } | |
4609 | ||
bf362611 JB |
4610 | /* Try to fix all the undefined types we ecountered while processing |
4611 | this unit. */ | |
4612 | ||
4613 | void | |
0a0edcd5 | 4614 | cleanup_undefined_stabs_types (struct objfile *objfile) |
bf362611 JB |
4615 | { |
4616 | cleanup_undefined_types_1 (); | |
46bf5051 | 4617 | cleanup_undefined_types_noname (objfile); |
bf362611 JB |
4618 | } |
4619 | ||
c906108c SS |
4620 | /* Scan through all of the global symbols defined in the object file, |
4621 | assigning values to the debugging symbols that need to be assigned | |
4622 | to. Get these symbols from the minimal symbol table. */ | |
4623 | ||
4624 | void | |
fba45db2 | 4625 | scan_file_globals (struct objfile *objfile) |
c906108c SS |
4626 | { |
4627 | int hash; | |
4628 | struct minimal_symbol *msymbol; | |
507836c0 | 4629 | struct symbol *sym, *prev; |
c906108c SS |
4630 | struct objfile *resolve_objfile; |
4631 | ||
4632 | /* SVR4 based linkers copy referenced global symbols from shared | |
4633 | libraries to the main executable. | |
4634 | If we are scanning the symbols for a shared library, try to resolve | |
4635 | them from the minimal symbols of the main executable first. */ | |
4636 | ||
4637 | if (symfile_objfile && objfile != symfile_objfile) | |
4638 | resolve_objfile = symfile_objfile; | |
4639 | else | |
4640 | resolve_objfile = objfile; | |
4641 | ||
4642 | while (1) | |
4643 | { | |
4644 | /* Avoid expensive loop through all minimal symbols if there are | |
c5aa993b | 4645 | no unresolved symbols. */ |
c906108c SS |
4646 | for (hash = 0; hash < HASHSIZE; hash++) |
4647 | { | |
4648 | if (global_sym_chain[hash]) | |
4649 | break; | |
4650 | } | |
4651 | if (hash >= HASHSIZE) | |
4652 | return; | |
4653 | ||
3567439c | 4654 | ALL_OBJFILE_MSYMBOLS (resolve_objfile, msymbol) |
c906108c SS |
4655 | { |
4656 | QUIT; | |
4657 | ||
4658 | /* Skip static symbols. */ | |
4659 | switch (MSYMBOL_TYPE (msymbol)) | |
4660 | { | |
4661 | case mst_file_text: | |
4662 | case mst_file_data: | |
4663 | case mst_file_bss: | |
4664 | continue; | |
4665 | default: | |
4666 | break; | |
4667 | } | |
4668 | ||
4669 | prev = NULL; | |
4670 | ||
4671 | /* Get the hash index and check all the symbols | |
c378eb4e | 4672 | under that hash index. */ |
c906108c | 4673 | |
efd66ac6 | 4674 | hash = hashname (MSYMBOL_LINKAGE_NAME (msymbol)); |
c906108c SS |
4675 | |
4676 | for (sym = global_sym_chain[hash]; sym;) | |
4677 | { | |
efd66ac6 | 4678 | if (strcmp (MSYMBOL_LINKAGE_NAME (msymbol), |
3567439c | 4679 | SYMBOL_LINKAGE_NAME (sym)) == 0) |
c906108c | 4680 | { |
c906108c | 4681 | /* Splice this symbol out of the hash chain and |
c378eb4e | 4682 | assign the value we have to it. */ |
c906108c SS |
4683 | if (prev) |
4684 | { | |
4685 | SYMBOL_VALUE_CHAIN (prev) = SYMBOL_VALUE_CHAIN (sym); | |
4686 | } | |
4687 | else | |
4688 | { | |
4689 | global_sym_chain[hash] = SYMBOL_VALUE_CHAIN (sym); | |
4690 | } | |
c5aa993b | 4691 | |
c906108c SS |
4692 | /* Check to see whether we need to fix up a common block. */ |
4693 | /* Note: this code might be executed several times for | |
4694 | the same symbol if there are multiple references. */ | |
507836c0 | 4695 | if (sym) |
c906108c | 4696 | { |
507836c0 | 4697 | if (SYMBOL_CLASS (sym) == LOC_BLOCK) |
c906108c | 4698 | { |
507836c0 | 4699 | fix_common_block (sym, |
77e371c0 TT |
4700 | MSYMBOL_VALUE_ADDRESS (resolve_objfile, |
4701 | msymbol)); | |
c906108c SS |
4702 | } |
4703 | else | |
4704 | { | |
507836c0 | 4705 | SYMBOL_VALUE_ADDRESS (sym) |
77e371c0 | 4706 | = MSYMBOL_VALUE_ADDRESS (resolve_objfile, msymbol); |
c906108c | 4707 | } |
efd66ac6 | 4708 | SYMBOL_SECTION (sym) = MSYMBOL_SECTION (msymbol); |
c906108c SS |
4709 | } |
4710 | ||
c906108c SS |
4711 | if (prev) |
4712 | { | |
4713 | sym = SYMBOL_VALUE_CHAIN (prev); | |
4714 | } | |
4715 | else | |
4716 | { | |
4717 | sym = global_sym_chain[hash]; | |
4718 | } | |
4719 | } | |
4720 | else | |
4721 | { | |
4722 | prev = sym; | |
4723 | sym = SYMBOL_VALUE_CHAIN (sym); | |
4724 | } | |
4725 | } | |
4726 | } | |
4727 | if (resolve_objfile == objfile) | |
4728 | break; | |
4729 | resolve_objfile = objfile; | |
4730 | } | |
4731 | ||
4732 | /* Change the storage class of any remaining unresolved globals to | |
4733 | LOC_UNRESOLVED and remove them from the chain. */ | |
4734 | for (hash = 0; hash < HASHSIZE; hash++) | |
4735 | { | |
4736 | sym = global_sym_chain[hash]; | |
4737 | while (sym) | |
4738 | { | |
4739 | prev = sym; | |
4740 | sym = SYMBOL_VALUE_CHAIN (sym); | |
4741 | ||
4742 | /* Change the symbol address from the misleading chain value | |
4743 | to address zero. */ | |
4744 | SYMBOL_VALUE_ADDRESS (prev) = 0; | |
4745 | ||
4746 | /* Complain about unresolved common block symbols. */ | |
4747 | if (SYMBOL_CLASS (prev) == LOC_STATIC) | |
f1e6e072 | 4748 | SYMBOL_ACLASS_INDEX (prev) = LOC_UNRESOLVED; |
c906108c | 4749 | else |
23136709 | 4750 | complaint (&symfile_complaints, |
3e43a32a MS |
4751 | _("%s: common block `%s' from " |
4752 | "global_sym_chain unresolved"), | |
4262abfb | 4753 | objfile_name (objfile), SYMBOL_PRINT_NAME (prev)); |
c906108c SS |
4754 | } |
4755 | } | |
4756 | memset (global_sym_chain, 0, sizeof (global_sym_chain)); | |
4757 | } | |
4758 | ||
4759 | /* Initialize anything that needs initializing when starting to read | |
4760 | a fresh piece of a symbol file, e.g. reading in the stuff corresponding | |
4761 | to a psymtab. */ | |
4762 | ||
4763 | void | |
fba45db2 | 4764 | stabsread_init (void) |
c906108c SS |
4765 | { |
4766 | } | |
4767 | ||
4768 | /* Initialize anything that needs initializing when a completely new | |
4769 | symbol file is specified (not just adding some symbols from another | |
4770 | file, e.g. a shared library). */ | |
4771 | ||
4772 | void | |
fba45db2 | 4773 | stabsread_new_init (void) |
c906108c SS |
4774 | { |
4775 | /* Empty the hash table of global syms looking for values. */ | |
4776 | memset (global_sym_chain, 0, sizeof (global_sym_chain)); | |
4777 | } | |
4778 | ||
4779 | /* Initialize anything that needs initializing at the same time as | |
c378eb4e | 4780 | start_symtab() is called. */ |
c906108c | 4781 | |
c5aa993b | 4782 | void |
fba45db2 | 4783 | start_stabs (void) |
c906108c SS |
4784 | { |
4785 | global_stabs = NULL; /* AIX COFF */ | |
4786 | /* Leave FILENUM of 0 free for builtin types and this file's types. */ | |
4787 | n_this_object_header_files = 1; | |
4788 | type_vector_length = 0; | |
4789 | type_vector = (struct type **) 0; | |
4790 | ||
4791 | /* FIXME: If common_block_name is not already NULL, we should complain(). */ | |
4792 | common_block_name = NULL; | |
c906108c SS |
4793 | } |
4794 | ||
c378eb4e | 4795 | /* Call after end_symtab(). */ |
c906108c | 4796 | |
c5aa993b | 4797 | void |
fba45db2 | 4798 | end_stabs (void) |
c906108c SS |
4799 | { |
4800 | if (type_vector) | |
4801 | { | |
b8c9b27d | 4802 | xfree (type_vector); |
c906108c SS |
4803 | } |
4804 | type_vector = 0; | |
4805 | type_vector_length = 0; | |
4806 | previous_stab_code = 0; | |
4807 | } | |
4808 | ||
4809 | void | |
fba45db2 | 4810 | finish_global_stabs (struct objfile *objfile) |
c906108c SS |
4811 | { |
4812 | if (global_stabs) | |
4813 | { | |
4814 | patch_block_stabs (global_symbols, global_stabs, objfile); | |
b8c9b27d | 4815 | xfree (global_stabs); |
c906108c SS |
4816 | global_stabs = NULL; |
4817 | } | |
4818 | } | |
4819 | ||
7e1d63ec AF |
4820 | /* Find the end of the name, delimited by a ':', but don't match |
4821 | ObjC symbols which look like -[Foo bar::]:bla. */ | |
a121b7c1 PA |
4822 | static const char * |
4823 | find_name_end (const char *name) | |
7e1d63ec | 4824 | { |
a121b7c1 | 4825 | const char *s = name; |
433759f7 | 4826 | |
7e1d63ec AF |
4827 | if (s[0] == '-' || *s == '+') |
4828 | { | |
4829 | /* Must be an ObjC method symbol. */ | |
4830 | if (s[1] != '[') | |
4831 | { | |
8a3fe4f8 | 4832 | error (_("invalid symbol name \"%s\""), name); |
7e1d63ec AF |
4833 | } |
4834 | s = strchr (s, ']'); | |
4835 | if (s == NULL) | |
4836 | { | |
8a3fe4f8 | 4837 | error (_("invalid symbol name \"%s\""), name); |
7e1d63ec AF |
4838 | } |
4839 | return strchr (s, ':'); | |
4840 | } | |
4841 | else | |
4842 | { | |
4843 | return strchr (s, ':'); | |
4844 | } | |
4845 | } | |
4846 | ||
c378eb4e | 4847 | /* Initializer for this module. */ |
c906108c SS |
4848 | |
4849 | void | |
fba45db2 | 4850 | _initialize_stabsread (void) |
c906108c | 4851 | { |
46bf5051 UW |
4852 | rs6000_builtin_type_data = register_objfile_data (); |
4853 | ||
c906108c SS |
4854 | undef_types_allocated = 20; |
4855 | undef_types_length = 0; | |
8d749320 | 4856 | undef_types = XNEWVEC (struct type *, undef_types_allocated); |
bf362611 JB |
4857 | |
4858 | noname_undefs_allocated = 20; | |
4859 | noname_undefs_length = 0; | |
8d749320 | 4860 | noname_undefs = XNEWVEC (struct nat, noname_undefs_allocated); |
f1e6e072 TT |
4861 | |
4862 | stab_register_index = register_symbol_register_impl (LOC_REGISTER, | |
4863 | &stab_register_funcs); | |
4864 | stab_regparm_index = register_symbol_register_impl (LOC_REGPARM_ADDR, | |
4865 | &stab_register_funcs); | |
c906108c | 4866 | } |