Commit | Line | Data |
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c906108c | 1 | /* Support routines for decoding "stabs" debugging information format. |
cf5b2f1b | 2 | |
e2882c85 | 3 | Copyright (C) 1986-2018 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" | |
0baae8db | 39 | #include "buildsym-legacy.h" |
c906108c SS |
40 | #include "complaints.h" |
41 | #include "demangle.h" | |
50f182aa | 42 | #include "gdb-demangle.h" |
c906108c | 43 | #include "language.h" |
f69fdf9b | 44 | #include "target-float.h" |
de17c821 DJ |
45 | #include "cp-abi.h" |
46 | #include "cp-support.h" | |
2150c3ef | 47 | #include "bcache.h" |
c906108c SS |
48 | #include <ctype.h> |
49 | ||
50 | /* Ask stabsread.h to define the vars it normally declares `extern'. */ | |
c5aa993b JM |
51 | #define EXTERN |
52 | /**/ | |
c906108c SS |
53 | #include "stabsread.h" /* Our own declarations */ |
54 | #undef EXTERN | |
55 | ||
52059ffd TT |
56 | struct nextfield |
57 | { | |
58 | struct nextfield *next; | |
59 | ||
60 | /* This is the raw visibility from the stab. It is not checked | |
61 | for being one of the visibilities we recognize, so code which | |
62 | examines this field better be able to deal. */ | |
63 | int visibility; | |
64 | ||
65 | struct field field; | |
66 | }; | |
67 | ||
68 | struct next_fnfieldlist | |
69 | { | |
70 | struct next_fnfieldlist *next; | |
71 | struct fn_fieldlist fn_fieldlist; | |
72 | }; | |
73 | ||
c906108c SS |
74 | /* The routines that read and process a complete stabs for a C struct or |
75 | C++ class pass lists of data member fields and lists of member function | |
76 | fields in an instance of a field_info structure, as defined below. | |
77 | This is part of some reorganization of low level C++ support and is | |
c378eb4e | 78 | expected to eventually go away... (FIXME) */ |
c906108c SS |
79 | |
80 | struct field_info | |
c5aa993b | 81 | { |
52059ffd TT |
82 | struct nextfield *list; |
83 | struct next_fnfieldlist *fnlist; | |
c5aa993b | 84 | }; |
c906108c SS |
85 | |
86 | static void | |
a121b7c1 | 87 | read_one_struct_field (struct field_info *, const char **, const char *, |
a14ed312 | 88 | struct type *, struct objfile *); |
c906108c | 89 | |
a14ed312 | 90 | static struct type *dbx_alloc_type (int[2], struct objfile *); |
c906108c | 91 | |
a121b7c1 | 92 | static long read_huge_number (const char **, int, int *, int); |
c906108c | 93 | |
a121b7c1 | 94 | static struct type *error_type (const char **, struct objfile *); |
c906108c SS |
95 | |
96 | static void | |
a14ed312 KB |
97 | patch_block_stabs (struct pending *, struct pending_stabs *, |
98 | struct objfile *); | |
c906108c | 99 | |
46cb6474 | 100 | static void fix_common_block (struct symbol *, CORE_ADDR); |
c906108c | 101 | |
a121b7c1 | 102 | static int read_type_number (const char **, int *); |
c906108c | 103 | |
a121b7c1 | 104 | static struct type *read_type (const char **, struct objfile *); |
a7a48797 | 105 | |
a121b7c1 PA |
106 | static struct type *read_range_type (const char **, int[2], |
107 | int, struct objfile *); | |
c906108c | 108 | |
a121b7c1 PA |
109 | static struct type *read_sun_builtin_type (const char **, |
110 | int[2], struct objfile *); | |
c906108c | 111 | |
a121b7c1 | 112 | static struct type *read_sun_floating_type (const char **, int[2], |
a14ed312 | 113 | struct objfile *); |
c906108c | 114 | |
a121b7c1 | 115 | static struct type *read_enum_type (const char **, struct type *, struct objfile *); |
c906108c | 116 | |
46bf5051 | 117 | static struct type *rs6000_builtin_type (int, struct objfile *); |
c906108c SS |
118 | |
119 | static int | |
a121b7c1 | 120 | read_member_functions (struct field_info *, const char **, struct type *, |
a14ed312 | 121 | struct objfile *); |
c906108c SS |
122 | |
123 | static int | |
a121b7c1 | 124 | read_struct_fields (struct field_info *, const char **, struct type *, |
a14ed312 | 125 | struct objfile *); |
c906108c SS |
126 | |
127 | static int | |
a121b7c1 | 128 | read_baseclasses (struct field_info *, const char **, struct type *, |
a14ed312 | 129 | struct objfile *); |
c906108c SS |
130 | |
131 | static int | |
a121b7c1 | 132 | read_tilde_fields (struct field_info *, const char **, struct type *, |
a14ed312 | 133 | struct objfile *); |
c906108c | 134 | |
a14ed312 | 135 | static int attach_fn_fields_to_type (struct field_info *, struct type *); |
c906108c | 136 | |
570b8f7c AC |
137 | static int attach_fields_to_type (struct field_info *, struct type *, |
138 | struct objfile *); | |
c906108c | 139 | |
a121b7c1 | 140 | static struct type *read_struct_type (const char **, struct type *, |
2ae1c2d2 | 141 | enum type_code, |
a14ed312 | 142 | struct objfile *); |
c906108c | 143 | |
a121b7c1 | 144 | static struct type *read_array_type (const char **, struct type *, |
a14ed312 | 145 | struct objfile *); |
c906108c | 146 | |
a121b7c1 PA |
147 | static struct field *read_args (const char **, int, struct objfile *, |
148 | int *, int *); | |
c906108c | 149 | |
bf362611 | 150 | static void add_undefined_type (struct type *, int[2]); |
a7a48797 | 151 | |
c906108c | 152 | static int |
a121b7c1 | 153 | read_cpp_abbrev (struct field_info *, const char **, struct type *, |
a14ed312 | 154 | struct objfile *); |
c906108c | 155 | |
a121b7c1 | 156 | static const char *find_name_end (const char *name); |
7e1d63ec | 157 | |
a121b7c1 | 158 | static int process_reference (const char **string); |
c906108c | 159 | |
a14ed312 | 160 | void stabsread_clear_cache (void); |
7be570e7 | 161 | |
8343f86c DJ |
162 | static const char vptr_name[] = "_vptr$"; |
163 | static const char vb_name[] = "_vb$"; | |
c906108c | 164 | |
23136709 KB |
165 | static void |
166 | invalid_cpp_abbrev_complaint (const char *arg1) | |
167 | { | |
b98664d3 | 168 | complaint (_("invalid C++ abbreviation `%s'"), arg1); |
23136709 | 169 | } |
c906108c | 170 | |
23136709 | 171 | static void |
49b0b195 | 172 | reg_value_complaint (int regnum, int num_regs, const char *sym) |
23136709 | 173 | { |
b98664d3 | 174 | complaint (_("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 | { | |
b98664d3 | 181 | complaint ("%s", arg1); |
23136709 | 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 | { | |
b98664d3 | 252 | complaint (_("Invalid symbol data: type number " |
3e43a32a | 253 | "(%d,%d) out of range at symtab pos %d."), |
23136709 | 254 | filenum, index, symnum); |
c906108c SS |
255 | goto error_return; |
256 | } | |
257 | ||
258 | if (filenum == 0) | |
259 | { | |
260 | if (index < 0) | |
261 | { | |
262 | /* Caller wants address of address of type. We think | |
263 | that negative (rs6k builtin) types will never appear as | |
264 | "lvalues", (nor should they), so we stuff the real type | |
265 | pointer into a temp, and return its address. If referenced, | |
266 | this will do the right thing. */ | |
267 | static struct type *temp_type; | |
268 | ||
46bf5051 | 269 | temp_type = rs6000_builtin_type (index, objfile); |
c906108c SS |
270 | return &temp_type; |
271 | } | |
272 | ||
273 | /* Type is defined outside of header files. | |
c5aa993b | 274 | Find it in this object file's type vector. */ |
c906108c SS |
275 | if (index >= type_vector_length) |
276 | { | |
277 | old_len = type_vector_length; | |
278 | if (old_len == 0) | |
279 | { | |
280 | type_vector_length = INITIAL_TYPE_VECTOR_LENGTH; | |
8d749320 | 281 | type_vector = XNEWVEC (struct type *, type_vector_length); |
c906108c SS |
282 | } |
283 | while (index >= type_vector_length) | |
284 | { | |
285 | type_vector_length *= 2; | |
286 | } | |
287 | type_vector = (struct type **) | |
288 | xrealloc ((char *) type_vector, | |
289 | (type_vector_length * sizeof (struct type *))); | |
290 | memset (&type_vector[old_len], 0, | |
291 | (type_vector_length - old_len) * sizeof (struct type *)); | |
c906108c SS |
292 | } |
293 | return (&type_vector[index]); | |
294 | } | |
295 | else | |
296 | { | |
297 | real_filenum = this_object_header_files[filenum]; | |
298 | ||
46bf5051 | 299 | if (real_filenum >= N_HEADER_FILES (objfile)) |
c906108c | 300 | { |
46bf5051 | 301 | static struct type *temp_type; |
c906108c | 302 | |
8a3fe4f8 | 303 | warning (_("GDB internal error: bad real_filenum")); |
c906108c SS |
304 | |
305 | error_return: | |
46bf5051 UW |
306 | temp_type = objfile_type (objfile)->builtin_error; |
307 | return &temp_type; | |
c906108c SS |
308 | } |
309 | ||
46bf5051 | 310 | f = HEADER_FILES (objfile) + real_filenum; |
c906108c SS |
311 | |
312 | f_orig_length = f->length; | |
313 | if (index >= f_orig_length) | |
314 | { | |
315 | while (index >= f->length) | |
316 | { | |
317 | f->length *= 2; | |
318 | } | |
319 | f->vector = (struct type **) | |
320 | xrealloc ((char *) f->vector, f->length * sizeof (struct type *)); | |
321 | memset (&f->vector[f_orig_length], 0, | |
322 | (f->length - f_orig_length) * sizeof (struct type *)); | |
323 | } | |
324 | return (&f->vector[index]); | |
325 | } | |
326 | } | |
327 | ||
328 | /* Make sure there is a type allocated for type numbers TYPENUMS | |
329 | and return the type object. | |
330 | This can create an empty (zeroed) type object. | |
331 | TYPENUMS may be (-1, -1) to return a new type object that is not | |
c378eb4e | 332 | put into the type vector, and so may not be referred to by number. */ |
c906108c SS |
333 | |
334 | static struct type * | |
35a2f538 | 335 | dbx_alloc_type (int typenums[2], struct objfile *objfile) |
c906108c | 336 | { |
52f0bd74 | 337 | struct type **type_addr; |
c906108c SS |
338 | |
339 | if (typenums[0] == -1) | |
340 | { | |
341 | return (alloc_type (objfile)); | |
342 | } | |
343 | ||
46bf5051 | 344 | type_addr = dbx_lookup_type (typenums, objfile); |
c906108c SS |
345 | |
346 | /* If we are referring to a type not known at all yet, | |
347 | allocate an empty type for it. | |
348 | We will fill it in later if we find out how. */ | |
349 | if (*type_addr == 0) | |
350 | { | |
351 | *type_addr = alloc_type (objfile); | |
352 | } | |
353 | ||
354 | return (*type_addr); | |
355 | } | |
356 | ||
9b790ce7 UW |
357 | /* Allocate a floating-point type of size BITS. */ |
358 | ||
359 | static struct type * | |
360 | dbx_init_float_type (struct objfile *objfile, int bits) | |
361 | { | |
362 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
363 | const struct floatformat **format; | |
364 | struct type *type; | |
365 | ||
366 | format = gdbarch_floatformat_for_type (gdbarch, NULL, bits); | |
367 | if (format) | |
368 | type = init_float_type (objfile, bits, NULL, format); | |
369 | else | |
77b7c781 | 370 | type = init_type (objfile, TYPE_CODE_ERROR, bits, NULL); |
9b790ce7 UW |
371 | |
372 | return type; | |
373 | } | |
374 | ||
c906108c | 375 | /* for all the stabs in a given stab vector, build appropriate types |
c378eb4e | 376 | and fix their symbols in given symbol vector. */ |
c906108c SS |
377 | |
378 | static void | |
fba45db2 KB |
379 | patch_block_stabs (struct pending *symbols, struct pending_stabs *stabs, |
380 | struct objfile *objfile) | |
c906108c SS |
381 | { |
382 | int ii; | |
383 | char *name; | |
a121b7c1 | 384 | const char *pp; |
c906108c SS |
385 | struct symbol *sym; |
386 | ||
387 | if (stabs) | |
388 | { | |
c906108c | 389 | /* for all the stab entries, find their corresponding symbols and |
c378eb4e | 390 | patch their types! */ |
c5aa993b | 391 | |
c906108c SS |
392 | for (ii = 0; ii < stabs->count; ++ii) |
393 | { | |
394 | name = stabs->stab[ii]; | |
c5aa993b | 395 | pp = (char *) strchr (name, ':'); |
8fb822e0 | 396 | gdb_assert (pp); /* Must find a ':' or game's over. */ |
c906108c SS |
397 | while (pp[1] == ':') |
398 | { | |
c5aa993b JM |
399 | pp += 2; |
400 | pp = (char *) strchr (pp, ':'); | |
c906108c | 401 | } |
c5aa993b | 402 | sym = find_symbol_in_list (symbols, name, pp - name); |
c906108c SS |
403 | if (!sym) |
404 | { | |
405 | /* FIXME-maybe: it would be nice if we noticed whether | |
c5aa993b JM |
406 | the variable was defined *anywhere*, not just whether |
407 | it is defined in this compilation unit. But neither | |
408 | xlc or GCC seem to need such a definition, and until | |
409 | we do psymtabs (so that the minimal symbols from all | |
410 | compilation units are available now), I'm not sure | |
411 | how to get the information. */ | |
c906108c SS |
412 | |
413 | /* On xcoff, if a global is defined and never referenced, | |
c5aa993b JM |
414 | ld will remove it from the executable. There is then |
415 | a N_GSYM stab for it, but no regular (C_EXT) symbol. */ | |
e623cf5d | 416 | sym = allocate_symbol (objfile); |
176620f1 | 417 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
f1e6e072 | 418 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
3567439c | 419 | SYMBOL_SET_LINKAGE_NAME |
224c3ddb SM |
420 | (sym, (char *) obstack_copy0 (&objfile->objfile_obstack, |
421 | name, pp - name)); | |
c906108c | 422 | pp += 2; |
c5aa993b | 423 | if (*(pp - 1) == 'F' || *(pp - 1) == 'f') |
c906108c SS |
424 | { |
425 | /* I don't think the linker does this with functions, | |
426 | so as far as I know this is never executed. | |
427 | But it doesn't hurt to check. */ | |
428 | SYMBOL_TYPE (sym) = | |
429 | lookup_function_type (read_type (&pp, objfile)); | |
430 | } | |
431 | else | |
432 | { | |
433 | SYMBOL_TYPE (sym) = read_type (&pp, objfile); | |
434 | } | |
e148f09d | 435 | add_symbol_to_list (sym, get_global_symbols ()); |
c906108c SS |
436 | } |
437 | else | |
438 | { | |
439 | pp += 2; | |
c5aa993b | 440 | if (*(pp - 1) == 'F' || *(pp - 1) == 'f') |
c906108c SS |
441 | { |
442 | SYMBOL_TYPE (sym) = | |
443 | lookup_function_type (read_type (&pp, objfile)); | |
444 | } | |
445 | else | |
446 | { | |
447 | SYMBOL_TYPE (sym) = read_type (&pp, objfile); | |
448 | } | |
449 | } | |
450 | } | |
451 | } | |
452 | } | |
c906108c | 453 | \f |
c5aa993b | 454 | |
c906108c SS |
455 | /* Read a number by which a type is referred to in dbx data, |
456 | or perhaps read a pair (FILENUM, TYPENUM) in parentheses. | |
457 | Just a single number N is equivalent to (0,N). | |
458 | Return the two numbers by storing them in the vector TYPENUMS. | |
459 | TYPENUMS will then be used as an argument to dbx_lookup_type. | |
460 | ||
461 | Returns 0 for success, -1 for error. */ | |
462 | ||
463 | static int | |
a121b7c1 | 464 | read_type_number (const char **pp, int *typenums) |
c906108c SS |
465 | { |
466 | int nbits; | |
433759f7 | 467 | |
c906108c SS |
468 | if (**pp == '(') |
469 | { | |
470 | (*pp)++; | |
94e10a22 | 471 | typenums[0] = read_huge_number (pp, ',', &nbits, 0); |
c5aa993b JM |
472 | if (nbits != 0) |
473 | return -1; | |
94e10a22 | 474 | typenums[1] = read_huge_number (pp, ')', &nbits, 0); |
c5aa993b JM |
475 | if (nbits != 0) |
476 | return -1; | |
c906108c SS |
477 | } |
478 | else | |
479 | { | |
480 | typenums[0] = 0; | |
94e10a22 | 481 | typenums[1] = read_huge_number (pp, 0, &nbits, 0); |
c5aa993b JM |
482 | if (nbits != 0) |
483 | return -1; | |
c906108c SS |
484 | } |
485 | return 0; | |
486 | } | |
c906108c | 487 | \f |
c5aa993b | 488 | |
c906108c SS |
489 | #define VISIBILITY_PRIVATE '0' /* Stabs character for private field */ |
490 | #define VISIBILITY_PROTECTED '1' /* Stabs character for protected fld */ | |
491 | #define VISIBILITY_PUBLIC '2' /* Stabs character for public field */ | |
492 | #define VISIBILITY_IGNORE '9' /* Optimized out or zero length */ | |
493 | ||
c906108c | 494 | /* Structure for storing pointers to reference definitions for fast lookup |
c378eb4e | 495 | during "process_later". */ |
c906108c SS |
496 | |
497 | struct ref_map | |
498 | { | |
a121b7c1 | 499 | const char *stabs; |
c906108c SS |
500 | CORE_ADDR value; |
501 | struct symbol *sym; | |
502 | }; | |
503 | ||
504 | #define MAX_CHUNK_REFS 100 | |
505 | #define REF_CHUNK_SIZE (MAX_CHUNK_REFS * sizeof (struct ref_map)) | |
506 | #define REF_MAP_SIZE(ref_chunk) ((ref_chunk) * REF_CHUNK_SIZE) | |
507 | ||
c5aa993b | 508 | static struct ref_map *ref_map; |
c906108c | 509 | |
c378eb4e | 510 | /* Ptr to free cell in chunk's linked list. */ |
c5aa993b | 511 | static int ref_count = 0; |
c906108c | 512 | |
c378eb4e | 513 | /* Number of chunks malloced. */ |
c906108c SS |
514 | static int ref_chunk = 0; |
515 | ||
7be570e7 | 516 | /* This file maintains a cache of stabs aliases found in the symbol |
c378eb4e MS |
517 | table. If the symbol table changes, this cache must be cleared |
518 | or we are left holding onto data in invalid obstacks. */ | |
7be570e7 | 519 | void |
fba45db2 | 520 | stabsread_clear_cache (void) |
7be570e7 JM |
521 | { |
522 | ref_count = 0; | |
523 | ref_chunk = 0; | |
524 | } | |
525 | ||
c906108c SS |
526 | /* Create array of pointers mapping refids to symbols and stab strings. |
527 | Add pointers to reference definition symbols and/or their values as we | |
c378eb4e MS |
528 | find them, using their reference numbers as our index. |
529 | These will be used later when we resolve references. */ | |
c906108c | 530 | void |
a121b7c1 | 531 | ref_add (int refnum, struct symbol *sym, const char *stabs, CORE_ADDR value) |
c906108c SS |
532 | { |
533 | if (ref_count == 0) | |
534 | ref_chunk = 0; | |
535 | if (refnum >= ref_count) | |
536 | ref_count = refnum + 1; | |
537 | if (ref_count > ref_chunk * MAX_CHUNK_REFS) | |
538 | { | |
c5aa993b | 539 | int new_slots = ref_count - ref_chunk * MAX_CHUNK_REFS; |
c906108c | 540 | int new_chunks = new_slots / MAX_CHUNK_REFS + 1; |
433759f7 | 541 | |
c906108c SS |
542 | ref_map = (struct ref_map *) |
543 | xrealloc (ref_map, REF_MAP_SIZE (ref_chunk + new_chunks)); | |
433759f7 MS |
544 | memset (ref_map + ref_chunk * MAX_CHUNK_REFS, 0, |
545 | new_chunks * REF_CHUNK_SIZE); | |
c906108c SS |
546 | ref_chunk += new_chunks; |
547 | } | |
548 | ref_map[refnum].stabs = stabs; | |
549 | ref_map[refnum].sym = sym; | |
550 | ref_map[refnum].value = value; | |
551 | } | |
552 | ||
553 | /* Return defined sym for the reference REFNUM. */ | |
554 | struct symbol * | |
fba45db2 | 555 | ref_search (int refnum) |
c906108c SS |
556 | { |
557 | if (refnum < 0 || refnum > ref_count) | |
558 | return 0; | |
559 | return ref_map[refnum].sym; | |
560 | } | |
561 | ||
c906108c SS |
562 | /* Parse a reference id in STRING and return the resulting |
563 | reference number. Move STRING beyond the reference id. */ | |
564 | ||
c5aa993b | 565 | static int |
a121b7c1 | 566 | process_reference (const char **string) |
c906108c | 567 | { |
a121b7c1 | 568 | const char *p; |
c906108c SS |
569 | int refnum = 0; |
570 | ||
c5aa993b JM |
571 | if (**string != '#') |
572 | return 0; | |
573 | ||
c906108c SS |
574 | /* Advance beyond the initial '#'. */ |
575 | p = *string + 1; | |
576 | ||
c378eb4e | 577 | /* Read number as reference id. */ |
c906108c SS |
578 | while (*p && isdigit (*p)) |
579 | { | |
580 | refnum = refnum * 10 + *p - '0'; | |
581 | p++; | |
582 | } | |
583 | *string = p; | |
584 | return refnum; | |
585 | } | |
586 | ||
587 | /* If STRING defines a reference, store away a pointer to the reference | |
588 | definition for later use. Return the reference number. */ | |
589 | ||
590 | int | |
a121b7c1 | 591 | symbol_reference_defined (const char **string) |
c906108c | 592 | { |
a121b7c1 | 593 | const char *p = *string; |
c906108c SS |
594 | int refnum = 0; |
595 | ||
596 | refnum = process_reference (&p); | |
597 | ||
c378eb4e | 598 | /* Defining symbols end in '='. */ |
c5aa993b | 599 | if (*p == '=') |
c906108c | 600 | { |
c378eb4e | 601 | /* Symbol is being defined here. */ |
c906108c SS |
602 | *string = p + 1; |
603 | return refnum; | |
604 | } | |
605 | else | |
606 | { | |
c378eb4e | 607 | /* Must be a reference. Either the symbol has already been defined, |
c906108c SS |
608 | or this is a forward reference to it. */ |
609 | *string = p; | |
610 | return -1; | |
611 | } | |
612 | } | |
613 | ||
768a979c UW |
614 | static int |
615 | stab_reg_to_regnum (struct symbol *sym, struct gdbarch *gdbarch) | |
616 | { | |
617 | int regno = gdbarch_stab_reg_to_regnum (gdbarch, SYMBOL_VALUE (sym)); | |
618 | ||
0fde2c53 DE |
619 | if (regno < 0 |
620 | || regno >= (gdbarch_num_regs (gdbarch) | |
621 | + gdbarch_num_pseudo_regs (gdbarch))) | |
768a979c UW |
622 | { |
623 | reg_value_complaint (regno, | |
624 | gdbarch_num_regs (gdbarch) | |
625 | + gdbarch_num_pseudo_regs (gdbarch), | |
626 | SYMBOL_PRINT_NAME (sym)); | |
627 | ||
c378eb4e | 628 | regno = gdbarch_sp_regnum (gdbarch); /* Known safe, though useless. */ |
768a979c UW |
629 | } |
630 | ||
631 | return regno; | |
632 | } | |
633 | ||
634 | static const struct symbol_register_ops stab_register_funcs = { | |
635 | stab_reg_to_regnum | |
636 | }; | |
637 | ||
f1e6e072 TT |
638 | /* The "aclass" indices for computed symbols. */ |
639 | ||
640 | static int stab_register_index; | |
641 | static int stab_regparm_index; | |
642 | ||
c906108c | 643 | struct symbol * |
a121b7c1 | 644 | define_symbol (CORE_ADDR valu, const char *string, int desc, int type, |
fba45db2 | 645 | struct objfile *objfile) |
c906108c | 646 | { |
5e2b427d | 647 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
52f0bd74 | 648 | struct symbol *sym; |
a121b7c1 | 649 | const char *p = find_name_end (string); |
c906108c SS |
650 | int deftype; |
651 | int synonym = 0; | |
52f0bd74 | 652 | int i; |
c906108c SS |
653 | |
654 | /* We would like to eliminate nameless symbols, but keep their types. | |
655 | E.g. stab entry ":t10=*2" should produce a type 10, which is a pointer | |
c378eb4e MS |
656 | to type 2, but, should not create a symbol to address that type. Since |
657 | the symbol will be nameless, there is no way any user can refer to it. */ | |
c906108c SS |
658 | |
659 | int nameless; | |
660 | ||
661 | /* Ignore syms with empty names. */ | |
662 | if (string[0] == 0) | |
663 | return 0; | |
664 | ||
c378eb4e | 665 | /* Ignore old-style symbols from cc -go. */ |
c906108c SS |
666 | if (p == 0) |
667 | return 0; | |
668 | ||
669 | while (p[1] == ':') | |
670 | { | |
c5aa993b JM |
671 | p += 2; |
672 | p = strchr (p, ':'); | |
681c238c MS |
673 | if (p == NULL) |
674 | { | |
b98664d3 | 675 | complaint ( |
681c238c MS |
676 | _("Bad stabs string '%s'"), string); |
677 | return NULL; | |
678 | } | |
c906108c SS |
679 | } |
680 | ||
681 | /* If a nameless stab entry, all we need is the type, not the symbol. | |
682 | e.g. ":t10=*2" or a nameless enum like " :T16=ered:0,green:1,blue:2,;" */ | |
683 | nameless = (p == string || ((string[0] == ' ') && (string[1] == ':'))); | |
684 | ||
e623cf5d | 685 | current_symbol = sym = allocate_symbol (objfile); |
c906108c | 686 | |
c906108c SS |
687 | if (processing_gcc_compilation) |
688 | { | |
689 | /* GCC 2.x puts the line number in desc. SunOS apparently puts in the | |
c5aa993b JM |
690 | number of bytes occupied by a type or object, which we ignore. */ |
691 | SYMBOL_LINE (sym) = desc; | |
c906108c SS |
692 | } |
693 | else | |
694 | { | |
c5aa993b | 695 | SYMBOL_LINE (sym) = 0; /* unknown */ |
c906108c SS |
696 | } |
697 | ||
3c65e5b3 | 698 | SYMBOL_SET_LANGUAGE (sym, get_current_subfile ()->language, |
025ac414 PM |
699 | &objfile->objfile_obstack); |
700 | ||
c906108c SS |
701 | if (is_cplus_marker (string[0])) |
702 | { | |
703 | /* Special GNU C++ names. */ | |
704 | switch (string[1]) | |
705 | { | |
c5aa993b | 706 | case 't': |
1c9e8358 | 707 | SYMBOL_SET_LINKAGE_NAME (sym, "this"); |
c5aa993b | 708 | break; |
c906108c | 709 | |
c5aa993b | 710 | case 'v': /* $vtbl_ptr_type */ |
c5aa993b | 711 | goto normal; |
c906108c | 712 | |
c5aa993b | 713 | case 'e': |
1c9e8358 | 714 | SYMBOL_SET_LINKAGE_NAME (sym, "eh_throw"); |
c5aa993b | 715 | break; |
c906108c | 716 | |
c5aa993b JM |
717 | case '_': |
718 | /* This was an anonymous type that was never fixed up. */ | |
719 | goto normal; | |
c906108c | 720 | |
c5aa993b JM |
721 | case 'X': |
722 | /* SunPRO (3.0 at least) static variable encoding. */ | |
5e2b427d | 723 | if (gdbarch_static_transform_name_p (gdbarch)) |
149ad273 | 724 | goto normal; |
86a73007 | 725 | /* fall through */ |
c906108c | 726 | |
c5aa993b | 727 | default: |
b98664d3 | 728 | complaint (_("Unknown C++ symbol name `%s'"), |
23136709 | 729 | string); |
c378eb4e | 730 | goto normal; /* Do *something* with it. */ |
c906108c SS |
731 | } |
732 | } | |
c906108c SS |
733 | else |
734 | { | |
735 | normal: | |
2f408ecb PA |
736 | std::string new_name; |
737 | ||
df8a16a1 | 738 | if (SYMBOL_LANGUAGE (sym) == language_cplus) |
71c25dea | 739 | { |
224c3ddb | 740 | char *name = (char *) alloca (p - string + 1); |
433759f7 | 741 | |
71c25dea TT |
742 | memcpy (name, string, p - string); |
743 | name[p - string] = '\0'; | |
744 | new_name = cp_canonicalize_string (name); | |
71c25dea | 745 | } |
2f408ecb | 746 | if (!new_name.empty ()) |
71c25dea | 747 | { |
2f408ecb PA |
748 | SYMBOL_SET_NAMES (sym, |
749 | new_name.c_str (), new_name.length (), | |
750 | 1, objfile); | |
71c25dea TT |
751 | } |
752 | else | |
04a679b8 | 753 | SYMBOL_SET_NAMES (sym, string, p - string, 1, objfile); |
45c58896 SW |
754 | |
755 | if (SYMBOL_LANGUAGE (sym) == language_cplus) | |
80e649fc TT |
756 | cp_scan_for_anonymous_namespaces (get_buildsym_compunit (), sym, |
757 | 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; |
e148f09d | 793 | add_symbol_to_list (sym, get_file_symbols ()); |
c906108c SS |
794 | return sym; |
795 | } | |
796 | ++p; | |
797 | switch (*p++) | |
798 | { | |
799 | case 'r': | |
800 | { | |
4e38b386 | 801 | gdb_byte *dbl_valu; |
6ccb9162 | 802 | struct type *dbl_type; |
c906108c | 803 | |
46bf5051 | 804 | dbl_type = objfile_type (objfile)->builtin_double; |
224c3ddb SM |
805 | dbl_valu |
806 | = (gdb_byte *) obstack_alloc (&objfile->objfile_obstack, | |
807 | TYPE_LENGTH (dbl_type)); | |
f69fdf9b UW |
808 | |
809 | target_float_from_string (dbl_valu, dbl_type, std::string (p)); | |
6ccb9162 UW |
810 | |
811 | SYMBOL_TYPE (sym) = dbl_type; | |
c906108c | 812 | SYMBOL_VALUE_BYTES (sym) = dbl_valu; |
f1e6e072 | 813 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST_BYTES; |
c906108c SS |
814 | } |
815 | break; | |
816 | case 'i': | |
817 | { | |
818 | /* Defining integer constants this way is kind of silly, | |
819 | since 'e' constants allows the compiler to give not | |
820 | only the value, but the type as well. C has at least | |
821 | int, long, unsigned int, and long long as constant | |
822 | types; other languages probably should have at least | |
823 | unsigned as well as signed constants. */ | |
824 | ||
46bf5051 | 825 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_long; |
c906108c | 826 | SYMBOL_VALUE (sym) = atoi (p); |
f1e6e072 | 827 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
c906108c SS |
828 | } |
829 | break; | |
ec8a089a PM |
830 | |
831 | case 'c': | |
832 | { | |
833 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_char; | |
834 | SYMBOL_VALUE (sym) = atoi (p); | |
f1e6e072 | 835 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
ec8a089a PM |
836 | } |
837 | break; | |
838 | ||
839 | case 's': | |
840 | { | |
841 | struct type *range_type; | |
842 | int ind = 0; | |
843 | char quote = *p++; | |
ec8a089a PM |
844 | gdb_byte *string_local = (gdb_byte *) alloca (strlen (p)); |
845 | gdb_byte *string_value; | |
846 | ||
847 | if (quote != '\'' && quote != '"') | |
848 | { | |
f1e6e072 | 849 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
ec8a089a PM |
850 | SYMBOL_TYPE (sym) = error_type (&p, objfile); |
851 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; | |
e148f09d | 852 | add_symbol_to_list (sym, get_file_symbols ()); |
ec8a089a PM |
853 | return sym; |
854 | } | |
855 | ||
856 | /* Find matching quote, rejecting escaped quotes. */ | |
857 | while (*p && *p != quote) | |
858 | { | |
859 | if (*p == '\\' && p[1] == quote) | |
860 | { | |
861 | string_local[ind] = (gdb_byte) quote; | |
862 | ind++; | |
863 | p += 2; | |
864 | } | |
865 | else if (*p) | |
866 | { | |
867 | string_local[ind] = (gdb_byte) (*p); | |
868 | ind++; | |
869 | p++; | |
870 | } | |
871 | } | |
872 | if (*p != quote) | |
873 | { | |
f1e6e072 | 874 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
ec8a089a PM |
875 | SYMBOL_TYPE (sym) = error_type (&p, objfile); |
876 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; | |
e148f09d | 877 | add_symbol_to_list (sym, get_file_symbols ()); |
ec8a089a PM |
878 | return sym; |
879 | } | |
880 | ||
881 | /* NULL terminate the string. */ | |
882 | string_local[ind] = 0; | |
3e43a32a | 883 | range_type |
0c9c3474 SA |
884 | = create_static_range_type (NULL, |
885 | objfile_type (objfile)->builtin_int, | |
886 | 0, ind); | |
ec8a089a PM |
887 | SYMBOL_TYPE (sym) = create_array_type (NULL, |
888 | objfile_type (objfile)->builtin_char, | |
889 | range_type); | |
224c3ddb SM |
890 | string_value |
891 | = (gdb_byte *) obstack_alloc (&objfile->objfile_obstack, ind + 1); | |
ec8a089a PM |
892 | memcpy (string_value, string_local, ind + 1); |
893 | p++; | |
894 | ||
895 | SYMBOL_VALUE_BYTES (sym) = string_value; | |
f1e6e072 | 896 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST_BYTES; |
ec8a089a PM |
897 | } |
898 | break; | |
899 | ||
c906108c SS |
900 | case 'e': |
901 | /* SYMBOL:c=eTYPE,INTVALUE for a constant symbol whose value | |
902 | can be represented as integral. | |
903 | e.g. "b:c=e6,0" for "const b = blob1" | |
904 | (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */ | |
905 | { | |
f1e6e072 | 906 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
c906108c SS |
907 | SYMBOL_TYPE (sym) = read_type (&p, objfile); |
908 | ||
909 | if (*p != ',') | |
910 | { | |
911 | SYMBOL_TYPE (sym) = error_type (&p, objfile); | |
912 | break; | |
913 | } | |
914 | ++p; | |
915 | ||
916 | /* If the value is too big to fit in an int (perhaps because | |
917 | it is unsigned), or something like that, we silently get | |
918 | a bogus value. The type and everything else about it is | |
919 | correct. Ideally, we should be using whatever we have | |
920 | available for parsing unsigned and long long values, | |
921 | however. */ | |
922 | SYMBOL_VALUE (sym) = atoi (p); | |
923 | } | |
924 | break; | |
925 | default: | |
926 | { | |
f1e6e072 | 927 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
c906108c SS |
928 | SYMBOL_TYPE (sym) = error_type (&p, objfile); |
929 | } | |
930 | } | |
176620f1 | 931 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e148f09d | 932 | add_symbol_to_list (sym, get_file_symbols ()); |
c906108c SS |
933 | return sym; |
934 | ||
935 | case 'C': | |
936 | /* The name of a caught exception. */ | |
937 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
f1e6e072 | 938 | SYMBOL_ACLASS_INDEX (sym) = LOC_LABEL; |
176620f1 | 939 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c | 940 | SYMBOL_VALUE_ADDRESS (sym) = valu; |
e148f09d | 941 | add_symbol_to_list (sym, get_local_symbols ()); |
c906108c SS |
942 | break; |
943 | ||
944 | case 'f': | |
945 | /* A static function definition. */ | |
946 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
f1e6e072 | 947 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
176620f1 | 948 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e148f09d | 949 | add_symbol_to_list (sym, get_file_symbols ()); |
c906108c SS |
950 | /* fall into process_function_types. */ |
951 | ||
952 | process_function_types: | |
953 | /* Function result types are described as the result type in stabs. | |
c5aa993b JM |
954 | We need to convert this to the function-returning-type-X type |
955 | in GDB. E.g. "int" is converted to "function returning int". */ | |
c906108c SS |
956 | if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_FUNC) |
957 | SYMBOL_TYPE (sym) = lookup_function_type (SYMBOL_TYPE (sym)); | |
958 | ||
1e698235 DJ |
959 | /* All functions in C++ have prototypes. Stabs does not offer an |
960 | explicit way to identify prototyped or unprototyped functions, | |
961 | but both GCC and Sun CC emit stabs for the "call-as" type rather | |
962 | than the "declared-as" type for unprototyped functions, so | |
963 | we treat all functions as if they were prototyped. This is used | |
964 | primarily for promotion when calling the function from GDB. */ | |
876cecd0 | 965 | TYPE_PROTOTYPED (SYMBOL_TYPE (sym)) = 1; |
c906108c | 966 | |
c378eb4e | 967 | /* fall into process_prototype_types. */ |
c906108c SS |
968 | |
969 | process_prototype_types: | |
970 | /* Sun acc puts declared types of arguments here. */ | |
971 | if (*p == ';') | |
972 | { | |
973 | struct type *ftype = SYMBOL_TYPE (sym); | |
974 | int nsemi = 0; | |
975 | int nparams = 0; | |
a121b7c1 | 976 | const char *p1 = p; |
c906108c SS |
977 | |
978 | /* Obtain a worst case guess for the number of arguments | |
979 | by counting the semicolons. */ | |
980 | while (*p1) | |
981 | { | |
982 | if (*p1++ == ';') | |
983 | nsemi++; | |
984 | } | |
985 | ||
c378eb4e | 986 | /* Allocate parameter information fields and fill them in. */ |
c906108c SS |
987 | TYPE_FIELDS (ftype) = (struct field *) |
988 | TYPE_ALLOC (ftype, nsemi * sizeof (struct field)); | |
989 | while (*p++ == ';') | |
990 | { | |
991 | struct type *ptype; | |
992 | ||
993 | /* A type number of zero indicates the start of varargs. | |
c5aa993b | 994 | FIXME: GDB currently ignores vararg functions. */ |
c906108c SS |
995 | if (p[0] == '0' && p[1] == '\0') |
996 | break; | |
997 | ptype = read_type (&p, objfile); | |
998 | ||
999 | /* The Sun compilers mark integer arguments, which should | |
c5aa993b | 1000 | be promoted to the width of the calling conventions, with |
c378eb4e | 1001 | a type which references itself. This type is turned into |
c5aa993b | 1002 | a TYPE_CODE_VOID type by read_type, and we have to turn |
5e2b427d UW |
1003 | it back into builtin_int here. |
1004 | FIXME: Do we need a new builtin_promoted_int_arg ? */ | |
c906108c | 1005 | if (TYPE_CODE (ptype) == TYPE_CODE_VOID) |
46bf5051 | 1006 | ptype = objfile_type (objfile)->builtin_int; |
8176bb6d DJ |
1007 | TYPE_FIELD_TYPE (ftype, nparams) = ptype; |
1008 | TYPE_FIELD_ARTIFICIAL (ftype, nparams++) = 0; | |
c906108c SS |
1009 | } |
1010 | TYPE_NFIELDS (ftype) = nparams; | |
876cecd0 | 1011 | TYPE_PROTOTYPED (ftype) = 1; |
c906108c SS |
1012 | } |
1013 | break; | |
1014 | ||
1015 | case 'F': | |
1016 | /* A global function definition. */ | |
1017 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
f1e6e072 | 1018 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
176620f1 | 1019 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e148f09d | 1020 | add_symbol_to_list (sym, get_global_symbols ()); |
c906108c SS |
1021 | goto process_function_types; |
1022 | ||
1023 | case 'G': | |
1024 | /* For a class G (global) symbol, it appears that the | |
c5aa993b JM |
1025 | value is not correct. It is necessary to search for the |
1026 | corresponding linker definition to find the value. | |
1027 | These definitions appear at the end of the namelist. */ | |
c906108c | 1028 | SYMBOL_TYPE (sym) = read_type (&p, objfile); |
f1e6e072 | 1029 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
176620f1 | 1030 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c | 1031 | /* Don't add symbol references to global_sym_chain. |
c5aa993b JM |
1032 | Symbol references don't have valid names and wont't match up with |
1033 | minimal symbols when the global_sym_chain is relocated. | |
1034 | We'll fixup symbol references when we fixup the defining symbol. */ | |
3567439c | 1035 | if (SYMBOL_LINKAGE_NAME (sym) && SYMBOL_LINKAGE_NAME (sym)[0] != '#') |
c906108c | 1036 | { |
3567439c | 1037 | i = hashname (SYMBOL_LINKAGE_NAME (sym)); |
c5aa993b JM |
1038 | SYMBOL_VALUE_CHAIN (sym) = global_sym_chain[i]; |
1039 | global_sym_chain[i] = sym; | |
c906108c | 1040 | } |
e148f09d | 1041 | add_symbol_to_list (sym, get_global_symbols ()); |
c906108c SS |
1042 | break; |
1043 | ||
1044 | /* This case is faked by a conditional above, | |
c5aa993b JM |
1045 | when there is no code letter in the dbx data. |
1046 | Dbx data never actually contains 'l'. */ | |
c906108c SS |
1047 | case 's': |
1048 | case 'l': | |
1049 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
f1e6e072 | 1050 | SYMBOL_ACLASS_INDEX (sym) = LOC_LOCAL; |
c906108c | 1051 | SYMBOL_VALUE (sym) = valu; |
176620f1 | 1052 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e148f09d | 1053 | add_symbol_to_list (sym, get_local_symbols ()); |
c906108c SS |
1054 | break; |
1055 | ||
1056 | case 'p': | |
1057 | if (*p == 'F') | |
1058 | /* pF is a two-letter code that means a function parameter in Fortran. | |
1059 | The type-number specifies the type of the return value. | |
1060 | Translate it into a pointer-to-function type. */ | |
1061 | { | |
1062 | p++; | |
1063 | SYMBOL_TYPE (sym) | |
1064 | = lookup_pointer_type | |
c5aa993b | 1065 | (lookup_function_type (read_type (&p, objfile))); |
c906108c SS |
1066 | } |
1067 | else | |
1068 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
1069 | ||
f1e6e072 | 1070 | SYMBOL_ACLASS_INDEX (sym) = LOC_ARG; |
c906108c | 1071 | SYMBOL_VALUE (sym) = valu; |
176620f1 | 1072 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
2a2d4dc3 | 1073 | SYMBOL_IS_ARGUMENT (sym) = 1; |
e148f09d | 1074 | add_symbol_to_list (sym, get_local_symbols ()); |
c906108c | 1075 | |
5e2b427d | 1076 | if (gdbarch_byte_order (gdbarch) != BFD_ENDIAN_BIG) |
c906108c SS |
1077 | { |
1078 | /* On little-endian machines, this crud is never necessary, | |
1079 | and, if the extra bytes contain garbage, is harmful. */ | |
1080 | break; | |
1081 | } | |
1082 | ||
1083 | /* If it's gcc-compiled, if it says `short', believe it. */ | |
f73e88f9 | 1084 | if (processing_gcc_compilation |
5e2b427d | 1085 | || gdbarch_believe_pcc_promotion (gdbarch)) |
c906108c SS |
1086 | break; |
1087 | ||
5e2b427d | 1088 | if (!gdbarch_believe_pcc_promotion (gdbarch)) |
7a292a7a | 1089 | { |
8ee56bcf AC |
1090 | /* If PCC says a parameter is a short or a char, it is |
1091 | really an int. */ | |
5e2b427d UW |
1092 | if (TYPE_LENGTH (SYMBOL_TYPE (sym)) |
1093 | < gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT | |
8ee56bcf | 1094 | && TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_INT) |
7a292a7a | 1095 | { |
8ee56bcf AC |
1096 | SYMBOL_TYPE (sym) = |
1097 | TYPE_UNSIGNED (SYMBOL_TYPE (sym)) | |
46bf5051 UW |
1098 | ? objfile_type (objfile)->builtin_unsigned_int |
1099 | : objfile_type (objfile)->builtin_int; | |
7a292a7a | 1100 | } |
8ee56bcf | 1101 | break; |
7a292a7a | 1102 | } |
0019cd49 | 1103 | /* Fall through. */ |
c906108c SS |
1104 | |
1105 | case 'P': | |
1106 | /* acc seems to use P to declare the prototypes of functions that | |
1107 | are referenced by this file. gdb is not prepared to deal | |
1108 | with this extra information. FIXME, it ought to. */ | |
1109 | if (type == N_FUN) | |
1110 | { | |
1111 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
1112 | goto process_prototype_types; | |
1113 | } | |
c5aa993b | 1114 | /*FALLTHROUGH */ |
c906108c SS |
1115 | |
1116 | case 'R': | |
1117 | /* Parameter which is in a register. */ | |
1118 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
f1e6e072 | 1119 | SYMBOL_ACLASS_INDEX (sym) = stab_register_index; |
2a2d4dc3 | 1120 | SYMBOL_IS_ARGUMENT (sym) = 1; |
768a979c | 1121 | SYMBOL_VALUE (sym) = valu; |
176620f1 | 1122 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e148f09d | 1123 | add_symbol_to_list (sym, get_local_symbols ()); |
c906108c SS |
1124 | break; |
1125 | ||
1126 | case 'r': | |
1127 | /* Register variable (either global or local). */ | |
1128 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
f1e6e072 | 1129 | SYMBOL_ACLASS_INDEX (sym) = stab_register_index; |
768a979c | 1130 | SYMBOL_VALUE (sym) = valu; |
176620f1 | 1131 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1132 | if (within_function) |
1133 | { | |
192cb3d4 MK |
1134 | /* Sun cc uses a pair of symbols, one 'p' and one 'r', with |
1135 | the same name to represent an argument passed in a | |
1136 | register. GCC uses 'P' for the same case. So if we find | |
1137 | such a symbol pair we combine it into one 'P' symbol. | |
1138 | For Sun cc we need to do this regardless of | |
1139 | stabs_argument_has_addr, because the compiler puts out | |
1140 | the 'p' symbol even if it never saves the argument onto | |
1141 | the stack. | |
1142 | ||
1143 | On most machines, we want to preserve both symbols, so | |
1144 | that we can still get information about what is going on | |
1145 | with the stack (VAX for computing args_printed, using | |
1146 | stack slots instead of saved registers in backtraces, | |
1147 | etc.). | |
c906108c SS |
1148 | |
1149 | Note that this code illegally combines | |
c5aa993b | 1150 | main(argc) struct foo argc; { register struct foo argc; } |
c906108c SS |
1151 | but this case is considered pathological and causes a warning |
1152 | from a decent compiler. */ | |
1153 | ||
e148f09d | 1154 | struct pending *local_symbols = *get_local_symbols (); |
c906108c SS |
1155 | if (local_symbols |
1156 | && local_symbols->nsyms > 0 | |
5e2b427d | 1157 | && gdbarch_stabs_argument_has_addr (gdbarch, SYMBOL_TYPE (sym))) |
c906108c SS |
1158 | { |
1159 | struct symbol *prev_sym; | |
433759f7 | 1160 | |
c906108c SS |
1161 | prev_sym = local_symbols->symbol[local_symbols->nsyms - 1]; |
1162 | if ((SYMBOL_CLASS (prev_sym) == LOC_REF_ARG | |
1163 | || SYMBOL_CLASS (prev_sym) == LOC_ARG) | |
3567439c DJ |
1164 | && strcmp (SYMBOL_LINKAGE_NAME (prev_sym), |
1165 | SYMBOL_LINKAGE_NAME (sym)) == 0) | |
c906108c | 1166 | { |
f1e6e072 | 1167 | SYMBOL_ACLASS_INDEX (prev_sym) = stab_register_index; |
c906108c SS |
1168 | /* Use the type from the LOC_REGISTER; that is the type |
1169 | that is actually in that register. */ | |
1170 | SYMBOL_TYPE (prev_sym) = SYMBOL_TYPE (sym); | |
1171 | SYMBOL_VALUE (prev_sym) = SYMBOL_VALUE (sym); | |
1172 | sym = prev_sym; | |
1173 | break; | |
1174 | } | |
1175 | } | |
e148f09d | 1176 | add_symbol_to_list (sym, get_local_symbols ()); |
c906108c SS |
1177 | } |
1178 | else | |
e148f09d | 1179 | add_symbol_to_list (sym, get_file_symbols ()); |
c906108c SS |
1180 | break; |
1181 | ||
1182 | case 'S': | |
c378eb4e | 1183 | /* Static symbol at top level of file. */ |
c906108c | 1184 | SYMBOL_TYPE (sym) = read_type (&p, objfile); |
f1e6e072 | 1185 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
c906108c | 1186 | SYMBOL_VALUE_ADDRESS (sym) = valu; |
5e2b427d UW |
1187 | if (gdbarch_static_transform_name_p (gdbarch) |
1188 | && gdbarch_static_transform_name (gdbarch, | |
3567439c DJ |
1189 | SYMBOL_LINKAGE_NAME (sym)) |
1190 | != SYMBOL_LINKAGE_NAME (sym)) | |
c5aa993b | 1191 | { |
3b7344d5 | 1192 | struct bound_minimal_symbol msym; |
433759f7 | 1193 | |
3e43a32a MS |
1194 | msym = lookup_minimal_symbol (SYMBOL_LINKAGE_NAME (sym), |
1195 | NULL, objfile); | |
3b7344d5 | 1196 | if (msym.minsym != NULL) |
c5aa993b | 1197 | { |
0d5cff50 | 1198 | const char *new_name = gdbarch_static_transform_name |
3567439c | 1199 | (gdbarch, SYMBOL_LINKAGE_NAME (sym)); |
433759f7 | 1200 | |
3567439c | 1201 | SYMBOL_SET_LINKAGE_NAME (sym, new_name); |
77e371c0 | 1202 | SYMBOL_VALUE_ADDRESS (sym) = BMSYMBOL_VALUE_ADDRESS (msym); |
c5aa993b JM |
1203 | } |
1204 | } | |
176620f1 | 1205 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e148f09d | 1206 | add_symbol_to_list (sym, get_file_symbols ()); |
c906108c SS |
1207 | break; |
1208 | ||
1209 | case 't': | |
52eea4ce JB |
1210 | /* In Ada, there is no distinction between typedef and non-typedef; |
1211 | any type declaration implicitly has the equivalent of a typedef, | |
c378eb4e | 1212 | and thus 't' is in fact equivalent to 'Tt'. |
52eea4ce JB |
1213 | |
1214 | Therefore, for Ada units, we check the character immediately | |
1215 | before the 't', and if we do not find a 'T', then make sure to | |
1216 | create the associated symbol in the STRUCT_DOMAIN ('t' definitions | |
1217 | will be stored in the VAR_DOMAIN). If the symbol was indeed | |
1218 | defined as 'Tt' then the STRUCT_DOMAIN symbol will be created | |
1219 | elsewhere, so we don't need to take care of that. | |
1220 | ||
1221 | This is important to do, because of forward references: | |
1222 | The cleanup of undefined types stored in undef_types only uses | |
1223 | STRUCT_DOMAIN symbols to perform the replacement. */ | |
1224 | synonym = (SYMBOL_LANGUAGE (sym) == language_ada && p[-2] != 'T'); | |
1225 | ||
e2cd42dd | 1226 | /* Typedef */ |
c906108c SS |
1227 | SYMBOL_TYPE (sym) = read_type (&p, objfile); |
1228 | ||
1229 | /* For a nameless type, we don't want a create a symbol, thus we | |
c378eb4e | 1230 | did not use `sym'. Return without further processing. */ |
c5aa993b JM |
1231 | if (nameless) |
1232 | return NULL; | |
c906108c | 1233 | |
f1e6e072 | 1234 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
c906108c | 1235 | SYMBOL_VALUE (sym) = valu; |
176620f1 | 1236 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c | 1237 | /* C++ vagaries: we may have a type which is derived from |
c5aa993b JM |
1238 | a base type which did not have its name defined when the |
1239 | derived class was output. We fill in the derived class's | |
1240 | base part member's name here in that case. */ | |
c906108c SS |
1241 | if (TYPE_NAME (SYMBOL_TYPE (sym)) != NULL) |
1242 | if ((TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_STRUCT | |
1243 | || TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_UNION) | |
1244 | && TYPE_N_BASECLASSES (SYMBOL_TYPE (sym))) | |
1245 | { | |
1246 | int j; | |
433759f7 | 1247 | |
c906108c SS |
1248 | for (j = TYPE_N_BASECLASSES (SYMBOL_TYPE (sym)) - 1; j >= 0; j--) |
1249 | if (TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym), j) == 0) | |
1250 | TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym), j) = | |
a737d952 | 1251 | TYPE_NAME (TYPE_BASECLASS (SYMBOL_TYPE (sym), j)); |
c906108c SS |
1252 | } |
1253 | ||
1254 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == NULL) | |
1255 | { | |
1256 | /* gcc-2.6 or later (when using -fvtable-thunks) | |
1257 | emits a unique named type for a vtable entry. | |
c378eb4e | 1258 | Some gdb code depends on that specific name. */ |
c906108c SS |
1259 | extern const char vtbl_ptr_name[]; |
1260 | ||
1261 | if ((TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_PTR | |
3567439c | 1262 | && strcmp (SYMBOL_LINKAGE_NAME (sym), vtbl_ptr_name)) |
c906108c SS |
1263 | || TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_FUNC) |
1264 | { | |
1265 | /* If we are giving a name to a type such as "pointer to | |
c5aa993b JM |
1266 | foo" or "function returning foo", we better not set |
1267 | the TYPE_NAME. If the program contains "typedef char | |
1268 | *caddr_t;", we don't want all variables of type char | |
1269 | * to print as caddr_t. This is not just a | |
1270 | consequence of GDB's type management; PCC and GCC (at | |
1271 | least through version 2.4) both output variables of | |
1272 | either type char * or caddr_t with the type number | |
1273 | defined in the 't' symbol for caddr_t. If a future | |
1274 | compiler cleans this up it GDB is not ready for it | |
1275 | yet, but if it becomes ready we somehow need to | |
1276 | disable this check (without breaking the PCC/GCC2.4 | |
1277 | case). | |
1278 | ||
1279 | Sigh. | |
1280 | ||
1281 | Fortunately, this check seems not to be necessary | |
1282 | for anything except pointers or functions. */ | |
c378eb4e MS |
1283 | /* ezannoni: 2000-10-26. This seems to apply for |
1284 | versions of gcc older than 2.8. This was the original | |
49d97c60 | 1285 | problem: with the following code gdb would tell that |
c378eb4e MS |
1286 | the type for name1 is caddr_t, and func is char(). |
1287 | ||
49d97c60 EZ |
1288 | typedef char *caddr_t; |
1289 | char *name2; | |
1290 | struct x | |
1291 | { | |
c378eb4e | 1292 | char *name1; |
49d97c60 EZ |
1293 | } xx; |
1294 | char *func() | |
1295 | { | |
1296 | } | |
1297 | main () {} | |
1298 | */ | |
1299 | ||
c378eb4e | 1300 | /* Pascal accepts names for pointer types. */ |
3c65e5b3 | 1301 | if (get_current_subfile ()->language == language_pascal) |
49d97c60 | 1302 | { |
3567439c | 1303 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_LINKAGE_NAME (sym); |
49d97c60 | 1304 | } |
c906108c SS |
1305 | } |
1306 | else | |
3567439c | 1307 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_LINKAGE_NAME (sym); |
c906108c SS |
1308 | } |
1309 | ||
e148f09d | 1310 | add_symbol_to_list (sym, get_file_symbols ()); |
52eea4ce JB |
1311 | |
1312 | if (synonym) | |
1313 | { | |
1314 | /* Create the STRUCT_DOMAIN clone. */ | |
e623cf5d | 1315 | struct symbol *struct_sym = allocate_symbol (objfile); |
52eea4ce JB |
1316 | |
1317 | *struct_sym = *sym; | |
f1e6e072 | 1318 | SYMBOL_ACLASS_INDEX (struct_sym) = LOC_TYPEDEF; |
52eea4ce JB |
1319 | SYMBOL_VALUE (struct_sym) = valu; |
1320 | SYMBOL_DOMAIN (struct_sym) = STRUCT_DOMAIN; | |
1321 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) | |
3e43a32a MS |
1322 | TYPE_NAME (SYMBOL_TYPE (sym)) |
1323 | = obconcat (&objfile->objfile_obstack, | |
1324 | SYMBOL_LINKAGE_NAME (sym), | |
1325 | (char *) NULL); | |
e148f09d | 1326 | add_symbol_to_list (struct_sym, get_file_symbols ()); |
52eea4ce JB |
1327 | } |
1328 | ||
c906108c SS |
1329 | break; |
1330 | ||
1331 | case 'T': | |
1332 | /* Struct, union, or enum tag. For GNU C++, this can be be followed | |
c5aa993b | 1333 | by 't' which means we are typedef'ing it as well. */ |
c906108c SS |
1334 | synonym = *p == 't'; |
1335 | ||
1336 | if (synonym) | |
1337 | p++; | |
c906108c SS |
1338 | |
1339 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
25caa7a8 | 1340 | |
c906108c | 1341 | /* For a nameless type, we don't want a create a symbol, thus we |
c378eb4e | 1342 | did not use `sym'. Return without further processing. */ |
c5aa993b JM |
1343 | if (nameless) |
1344 | return NULL; | |
c906108c | 1345 | |
f1e6e072 | 1346 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
c906108c | 1347 | SYMBOL_VALUE (sym) = valu; |
176620f1 | 1348 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
e86ca25f TT |
1349 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) |
1350 | TYPE_NAME (SYMBOL_TYPE (sym)) | |
3e43a32a MS |
1351 | = obconcat (&objfile->objfile_obstack, |
1352 | SYMBOL_LINKAGE_NAME (sym), | |
1353 | (char *) NULL); | |
e148f09d | 1354 | add_symbol_to_list (sym, get_file_symbols ()); |
c906108c SS |
1355 | |
1356 | if (synonym) | |
1357 | { | |
c378eb4e | 1358 | /* Clone the sym and then modify it. */ |
e623cf5d | 1359 | struct symbol *typedef_sym = allocate_symbol (objfile); |
433759f7 | 1360 | |
c906108c | 1361 | *typedef_sym = *sym; |
f1e6e072 | 1362 | SYMBOL_ACLASS_INDEX (typedef_sym) = LOC_TYPEDEF; |
c906108c | 1363 | SYMBOL_VALUE (typedef_sym) = valu; |
176620f1 | 1364 | SYMBOL_DOMAIN (typedef_sym) = VAR_DOMAIN; |
c906108c | 1365 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) |
3e43a32a MS |
1366 | TYPE_NAME (SYMBOL_TYPE (sym)) |
1367 | = obconcat (&objfile->objfile_obstack, | |
1368 | SYMBOL_LINKAGE_NAME (sym), | |
1369 | (char *) NULL); | |
e148f09d | 1370 | add_symbol_to_list (typedef_sym, get_file_symbols ()); |
c906108c SS |
1371 | } |
1372 | break; | |
1373 | ||
1374 | case 'V': | |
c378eb4e | 1375 | /* Static symbol of local scope. */ |
c906108c | 1376 | SYMBOL_TYPE (sym) = read_type (&p, objfile); |
f1e6e072 | 1377 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
c906108c | 1378 | SYMBOL_VALUE_ADDRESS (sym) = valu; |
5e2b427d UW |
1379 | if (gdbarch_static_transform_name_p (gdbarch) |
1380 | && gdbarch_static_transform_name (gdbarch, | |
3567439c DJ |
1381 | SYMBOL_LINKAGE_NAME (sym)) |
1382 | != SYMBOL_LINKAGE_NAME (sym)) | |
c5aa993b | 1383 | { |
3b7344d5 | 1384 | struct bound_minimal_symbol msym; |
433759f7 MS |
1385 | |
1386 | msym = lookup_minimal_symbol (SYMBOL_LINKAGE_NAME (sym), | |
1387 | NULL, objfile); | |
3b7344d5 | 1388 | if (msym.minsym != NULL) |
c5aa993b | 1389 | { |
0d5cff50 | 1390 | const char *new_name = gdbarch_static_transform_name |
3567439c | 1391 | (gdbarch, SYMBOL_LINKAGE_NAME (sym)); |
433759f7 | 1392 | |
3567439c | 1393 | SYMBOL_SET_LINKAGE_NAME (sym, new_name); |
77e371c0 | 1394 | SYMBOL_VALUE_ADDRESS (sym) = BMSYMBOL_VALUE_ADDRESS (msym); |
c5aa993b JM |
1395 | } |
1396 | } | |
176620f1 | 1397 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e148f09d | 1398 | add_symbol_to_list (sym, get_local_symbols ()); |
c906108c SS |
1399 | break; |
1400 | ||
1401 | case 'v': | |
1402 | /* Reference parameter */ | |
1403 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
f1e6e072 | 1404 | SYMBOL_ACLASS_INDEX (sym) = LOC_REF_ARG; |
2a2d4dc3 | 1405 | SYMBOL_IS_ARGUMENT (sym) = 1; |
c906108c | 1406 | SYMBOL_VALUE (sym) = valu; |
176620f1 | 1407 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e148f09d | 1408 | add_symbol_to_list (sym, get_local_symbols ()); |
c906108c SS |
1409 | break; |
1410 | ||
1411 | case 'a': | |
1412 | /* Reference parameter which is in a register. */ | |
1413 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
f1e6e072 | 1414 | SYMBOL_ACLASS_INDEX (sym) = stab_regparm_index; |
2a2d4dc3 | 1415 | SYMBOL_IS_ARGUMENT (sym) = 1; |
768a979c | 1416 | SYMBOL_VALUE (sym) = valu; |
176620f1 | 1417 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e148f09d | 1418 | add_symbol_to_list (sym, get_local_symbols ()); |
c906108c SS |
1419 | break; |
1420 | ||
1421 | case 'X': | |
1422 | /* This is used by Sun FORTRAN for "function result value". | |
c5aa993b JM |
1423 | Sun claims ("dbx and dbxtool interfaces", 2nd ed) |
1424 | that Pascal uses it too, but when I tried it Pascal used | |
1425 | "x:3" (local symbol) instead. */ | |
c906108c | 1426 | SYMBOL_TYPE (sym) = read_type (&p, objfile); |
f1e6e072 | 1427 | SYMBOL_ACLASS_INDEX (sym) = LOC_LOCAL; |
c906108c | 1428 | SYMBOL_VALUE (sym) = valu; |
176620f1 | 1429 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e148f09d | 1430 | add_symbol_to_list (sym, get_local_symbols ()); |
c906108c | 1431 | break; |
c906108c SS |
1432 | |
1433 | default: | |
1434 | SYMBOL_TYPE (sym) = error_type (&p, objfile); | |
f1e6e072 | 1435 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
c906108c | 1436 | SYMBOL_VALUE (sym) = 0; |
176620f1 | 1437 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e148f09d | 1438 | add_symbol_to_list (sym, get_file_symbols ()); |
c906108c SS |
1439 | break; |
1440 | } | |
1441 | ||
192cb3d4 MK |
1442 | /* Some systems pass variables of certain types by reference instead |
1443 | of by value, i.e. they will pass the address of a structure (in a | |
1444 | register or on the stack) instead of the structure itself. */ | |
c906108c | 1445 | |
5e2b427d | 1446 | if (gdbarch_stabs_argument_has_addr (gdbarch, SYMBOL_TYPE (sym)) |
2a2d4dc3 | 1447 | && SYMBOL_IS_ARGUMENT (sym)) |
c906108c | 1448 | { |
2a2d4dc3 | 1449 | /* We have to convert LOC_REGISTER to LOC_REGPARM_ADDR (for |
192cb3d4 | 1450 | variables passed in a register). */ |
2a2d4dc3 | 1451 | if (SYMBOL_CLASS (sym) == LOC_REGISTER) |
f1e6e072 | 1452 | SYMBOL_ACLASS_INDEX (sym) = LOC_REGPARM_ADDR; |
192cb3d4 MK |
1453 | /* Likewise for converting LOC_ARG to LOC_REF_ARG (for the 7th |
1454 | and subsequent arguments on SPARC, for example). */ | |
1455 | else if (SYMBOL_CLASS (sym) == LOC_ARG) | |
f1e6e072 | 1456 | SYMBOL_ACLASS_INDEX (sym) = LOC_REF_ARG; |
c906108c SS |
1457 | } |
1458 | ||
c906108c SS |
1459 | return sym; |
1460 | } | |
1461 | ||
c906108c SS |
1462 | /* Skip rest of this symbol and return an error type. |
1463 | ||
1464 | General notes on error recovery: error_type always skips to the | |
1465 | end of the symbol (modulo cretinous dbx symbol name continuation). | |
1466 | Thus code like this: | |
1467 | ||
1468 | if (*(*pp)++ != ';') | |
c5aa993b | 1469 | return error_type (pp, objfile); |
c906108c SS |
1470 | |
1471 | is wrong because if *pp starts out pointing at '\0' (typically as the | |
1472 | result of an earlier error), it will be incremented to point to the | |
1473 | start of the next symbol, which might produce strange results, at least | |
1474 | if you run off the end of the string table. Instead use | |
1475 | ||
1476 | if (**pp != ';') | |
c5aa993b | 1477 | return error_type (pp, objfile); |
c906108c SS |
1478 | ++*pp; |
1479 | ||
1480 | or | |
1481 | ||
1482 | if (**pp != ';') | |
c5aa993b | 1483 | foo = error_type (pp, objfile); |
c906108c | 1484 | else |
c5aa993b | 1485 | ++*pp; |
c906108c SS |
1486 | |
1487 | And in case it isn't obvious, the point of all this hair is so the compiler | |
1488 | can define new types and new syntaxes, and old versions of the | |
1489 | debugger will be able to read the new symbol tables. */ | |
1490 | ||
1491 | static struct type * | |
a121b7c1 | 1492 | error_type (const char **pp, struct objfile *objfile) |
c906108c | 1493 | { |
b98664d3 | 1494 | complaint (_("couldn't parse type; debugger out of date?")); |
c906108c SS |
1495 | while (1) |
1496 | { | |
1497 | /* Skip to end of symbol. */ | |
1498 | while (**pp != '\0') | |
1499 | { | |
1500 | (*pp)++; | |
1501 | } | |
1502 | ||
1503 | /* Check for and handle cretinous dbx symbol name continuation! */ | |
1504 | if ((*pp)[-1] == '\\' || (*pp)[-1] == '?') | |
1505 | { | |
1506 | *pp = next_symbol_text (objfile); | |
1507 | } | |
1508 | else | |
1509 | { | |
1510 | break; | |
1511 | } | |
1512 | } | |
46bf5051 | 1513 | return objfile_type (objfile)->builtin_error; |
c906108c | 1514 | } |
c906108c | 1515 | \f |
c5aa993b | 1516 | |
c906108c SS |
1517 | /* Read type information or a type definition; return the type. Even |
1518 | though this routine accepts either type information or a type | |
1519 | definition, the distinction is relevant--some parts of stabsread.c | |
1520 | assume that type information starts with a digit, '-', or '(' in | |
1521 | deciding whether to call read_type. */ | |
1522 | ||
a7a48797 | 1523 | static struct type * |
a121b7c1 | 1524 | read_type (const char **pp, struct objfile *objfile) |
c906108c | 1525 | { |
52f0bd74 | 1526 | struct type *type = 0; |
c906108c SS |
1527 | struct type *type1; |
1528 | int typenums[2]; | |
1529 | char type_descriptor; | |
1530 | ||
1531 | /* Size in bits of type if specified by a type attribute, or -1 if | |
1532 | there is no size attribute. */ | |
1533 | int type_size = -1; | |
1534 | ||
c378eb4e | 1535 | /* Used to distinguish string and bitstring from char-array and set. */ |
c906108c SS |
1536 | int is_string = 0; |
1537 | ||
c378eb4e | 1538 | /* Used to distinguish vector from array. */ |
e2cd42dd MS |
1539 | int is_vector = 0; |
1540 | ||
c906108c SS |
1541 | /* Read type number if present. The type number may be omitted. |
1542 | for instance in a two-dimensional array declared with type | |
1543 | "ar1;1;10;ar1;1;10;4". */ | |
1544 | if ((**pp >= '0' && **pp <= '9') | |
1545 | || **pp == '(' | |
1546 | || **pp == '-') | |
1547 | { | |
1548 | if (read_type_number (pp, typenums) != 0) | |
1549 | return error_type (pp, objfile); | |
c5aa993b | 1550 | |
c906108c | 1551 | if (**pp != '=') |
8cfe231d JB |
1552 | { |
1553 | /* Type is not being defined here. Either it already | |
1554 | exists, or this is a forward reference to it. | |
1555 | dbx_alloc_type handles both cases. */ | |
1556 | type = dbx_alloc_type (typenums, objfile); | |
1557 | ||
1558 | /* If this is a forward reference, arrange to complain if it | |
1559 | doesn't get patched up by the time we're done | |
1560 | reading. */ | |
1561 | if (TYPE_CODE (type) == TYPE_CODE_UNDEF) | |
bf362611 | 1562 | add_undefined_type (type, typenums); |
8cfe231d JB |
1563 | |
1564 | return type; | |
1565 | } | |
c906108c SS |
1566 | |
1567 | /* Type is being defined here. */ | |
1568 | /* Skip the '='. | |
c5aa993b JM |
1569 | Also skip the type descriptor - we get it below with (*pp)[-1]. */ |
1570 | (*pp) += 2; | |
c906108c SS |
1571 | } |
1572 | else | |
1573 | { | |
1574 | /* 'typenums=' not present, type is anonymous. Read and return | |
c5aa993b | 1575 | the definition, but don't put it in the type vector. */ |
c906108c SS |
1576 | typenums[0] = typenums[1] = -1; |
1577 | (*pp)++; | |
1578 | } | |
1579 | ||
c5aa993b | 1580 | again: |
c906108c SS |
1581 | type_descriptor = (*pp)[-1]; |
1582 | switch (type_descriptor) | |
1583 | { | |
1584 | case 'x': | |
1585 | { | |
1586 | enum type_code code; | |
1587 | ||
1588 | /* Used to index through file_symbols. */ | |
1589 | struct pending *ppt; | |
1590 | int i; | |
c5aa993b | 1591 | |
c906108c SS |
1592 | /* Name including "struct", etc. */ |
1593 | char *type_name; | |
c5aa993b | 1594 | |
c906108c | 1595 | { |
a121b7c1 | 1596 | const char *from, *p, *q1, *q2; |
c5aa993b | 1597 | |
c906108c SS |
1598 | /* Set the type code according to the following letter. */ |
1599 | switch ((*pp)[0]) | |
1600 | { | |
1601 | case 's': | |
1602 | code = TYPE_CODE_STRUCT; | |
1603 | break; | |
1604 | case 'u': | |
1605 | code = TYPE_CODE_UNION; | |
1606 | break; | |
1607 | case 'e': | |
1608 | code = TYPE_CODE_ENUM; | |
1609 | break; | |
1610 | default: | |
1611 | { | |
1612 | /* Complain and keep going, so compilers can invent new | |
1613 | cross-reference types. */ | |
b98664d3 | 1614 | complaint (_("Unrecognized cross-reference type `%c'"), |
3e43a32a | 1615 | (*pp)[0]); |
c906108c SS |
1616 | code = TYPE_CODE_STRUCT; |
1617 | break; | |
1618 | } | |
1619 | } | |
c5aa993b | 1620 | |
c906108c SS |
1621 | q1 = strchr (*pp, '<'); |
1622 | p = strchr (*pp, ':'); | |
1623 | if (p == NULL) | |
1624 | return error_type (pp, objfile); | |
1625 | if (q1 && p > q1 && p[1] == ':') | |
1626 | { | |
1627 | int nesting_level = 0; | |
433759f7 | 1628 | |
c906108c SS |
1629 | for (q2 = q1; *q2; q2++) |
1630 | { | |
1631 | if (*q2 == '<') | |
1632 | nesting_level++; | |
1633 | else if (*q2 == '>') | |
1634 | nesting_level--; | |
1635 | else if (*q2 == ':' && nesting_level == 0) | |
1636 | break; | |
1637 | } | |
1638 | p = q2; | |
1639 | if (*p != ':') | |
1640 | return error_type (pp, objfile); | |
1641 | } | |
71c25dea | 1642 | type_name = NULL; |
3c65e5b3 | 1643 | if (get_current_subfile ()->language == language_cplus) |
71c25dea | 1644 | { |
2f408ecb | 1645 | char *name = (char *) alloca (p - *pp + 1); |
433759f7 | 1646 | |
71c25dea TT |
1647 | memcpy (name, *pp, p - *pp); |
1648 | name[p - *pp] = '\0'; | |
2f408ecb PA |
1649 | |
1650 | std::string new_name = cp_canonicalize_string (name); | |
1651 | if (!new_name.empty ()) | |
71c25dea | 1652 | { |
224c3ddb SM |
1653 | type_name |
1654 | = (char *) obstack_copy0 (&objfile->objfile_obstack, | |
2f408ecb PA |
1655 | new_name.c_str (), |
1656 | new_name.length ()); | |
71c25dea TT |
1657 | } |
1658 | } | |
1659 | if (type_name == NULL) | |
1660 | { | |
a121b7c1 | 1661 | char *to = type_name = (char *) |
3e43a32a | 1662 | obstack_alloc (&objfile->objfile_obstack, p - *pp + 1); |
71c25dea TT |
1663 | |
1664 | /* Copy the name. */ | |
1665 | from = *pp + 1; | |
1666 | while (from < p) | |
1667 | *to++ = *from++; | |
1668 | *to = '\0'; | |
1669 | } | |
c5aa993b | 1670 | |
c906108c SS |
1671 | /* Set the pointer ahead of the name which we just read, and |
1672 | the colon. */ | |
71c25dea | 1673 | *pp = p + 1; |
c906108c SS |
1674 | } |
1675 | ||
149d821b JB |
1676 | /* If this type has already been declared, then reuse the same |
1677 | type, rather than allocating a new one. This saves some | |
1678 | memory. */ | |
c906108c | 1679 | |
e148f09d | 1680 | for (ppt = *get_file_symbols (); ppt; ppt = ppt->next) |
c906108c SS |
1681 | for (i = 0; i < ppt->nsyms; i++) |
1682 | { | |
1683 | struct symbol *sym = ppt->symbol[i]; | |
1684 | ||
1685 | if (SYMBOL_CLASS (sym) == LOC_TYPEDEF | |
176620f1 | 1686 | && SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN |
c906108c | 1687 | && (TYPE_CODE (SYMBOL_TYPE (sym)) == code) |
3567439c | 1688 | && strcmp (SYMBOL_LINKAGE_NAME (sym), type_name) == 0) |
c906108c | 1689 | { |
b99607ea | 1690 | obstack_free (&objfile->objfile_obstack, type_name); |
c906108c | 1691 | type = SYMBOL_TYPE (sym); |
149d821b | 1692 | if (typenums[0] != -1) |
46bf5051 | 1693 | *dbx_lookup_type (typenums, objfile) = type; |
c906108c SS |
1694 | return type; |
1695 | } | |
1696 | } | |
1697 | ||
1698 | /* Didn't find the type to which this refers, so we must | |
1699 | be dealing with a forward reference. Allocate a type | |
1700 | structure for it, and keep track of it so we can | |
1701 | fill in the rest of the fields when we get the full | |
1702 | type. */ | |
1703 | type = dbx_alloc_type (typenums, objfile); | |
1704 | TYPE_CODE (type) = code; | |
e86ca25f | 1705 | TYPE_NAME (type) = type_name; |
c5aa993b | 1706 | INIT_CPLUS_SPECIFIC (type); |
876cecd0 | 1707 | TYPE_STUB (type) = 1; |
c906108c | 1708 | |
bf362611 | 1709 | add_undefined_type (type, typenums); |
c906108c SS |
1710 | return type; |
1711 | } | |
1712 | ||
c5aa993b | 1713 | case '-': /* RS/6000 built-in type */ |
c906108c SS |
1714 | case '0': |
1715 | case '1': | |
1716 | case '2': | |
1717 | case '3': | |
1718 | case '4': | |
1719 | case '5': | |
1720 | case '6': | |
1721 | case '7': | |
1722 | case '8': | |
1723 | case '9': | |
1724 | case '(': | |
1725 | (*pp)--; | |
1726 | ||
1727 | /* We deal with something like t(1,2)=(3,4)=... which | |
c378eb4e | 1728 | the Lucid compiler and recent gcc versions (post 2.7.3) use. */ |
c906108c SS |
1729 | |
1730 | /* Allocate and enter the typedef type first. | |
c378eb4e | 1731 | This handles recursive types. */ |
c906108c SS |
1732 | type = dbx_alloc_type (typenums, objfile); |
1733 | TYPE_CODE (type) = TYPE_CODE_TYPEDEF; | |
c5aa993b JM |
1734 | { |
1735 | struct type *xtype = read_type (pp, objfile); | |
433759f7 | 1736 | |
c906108c SS |
1737 | if (type == xtype) |
1738 | { | |
1739 | /* It's being defined as itself. That means it is "void". */ | |
1740 | TYPE_CODE (type) = TYPE_CODE_VOID; | |
1741 | TYPE_LENGTH (type) = 1; | |
1742 | } | |
1743 | else if (type_size >= 0 || is_string) | |
1744 | { | |
dd6bda65 DJ |
1745 | /* This is the absolute wrong way to construct types. Every |
1746 | other debug format has found a way around this problem and | |
1747 | the related problems with unnecessarily stubbed types; | |
1748 | someone motivated should attempt to clean up the issue | |
1749 | here as well. Once a type pointed to has been created it | |
13a393b0 JB |
1750 | should not be modified. |
1751 | ||
1752 | Well, it's not *absolutely* wrong. Constructing recursive | |
1753 | types (trees, linked lists) necessarily entails modifying | |
1754 | types after creating them. Constructing any loop structure | |
1755 | entails side effects. The Dwarf 2 reader does handle this | |
1756 | more gracefully (it never constructs more than once | |
1757 | instance of a type object, so it doesn't have to copy type | |
1758 | objects wholesale), but it still mutates type objects after | |
1759 | other folks have references to them. | |
1760 | ||
1761 | Keep in mind that this circularity/mutation issue shows up | |
1762 | at the source language level, too: C's "incomplete types", | |
1763 | for example. So the proper cleanup, I think, would be to | |
1764 | limit GDB's type smashing to match exactly those required | |
1765 | by the source language. So GDB could have a | |
1766 | "complete_this_type" function, but never create unnecessary | |
1767 | copies of a type otherwise. */ | |
dd6bda65 | 1768 | replace_type (type, xtype); |
c906108c | 1769 | TYPE_NAME (type) = NULL; |
c906108c SS |
1770 | } |
1771 | else | |
1772 | { | |
876cecd0 | 1773 | TYPE_TARGET_STUB (type) = 1; |
c906108c SS |
1774 | TYPE_TARGET_TYPE (type) = xtype; |
1775 | } | |
1776 | } | |
1777 | break; | |
1778 | ||
c5aa993b JM |
1779 | /* In the following types, we must be sure to overwrite any existing |
1780 | type that the typenums refer to, rather than allocating a new one | |
1781 | and making the typenums point to the new one. This is because there | |
1782 | may already be pointers to the existing type (if it had been | |
1783 | forward-referenced), and we must change it to a pointer, function, | |
1784 | reference, or whatever, *in-place*. */ | |
c906108c | 1785 | |
e2cd42dd | 1786 | case '*': /* Pointer to another type */ |
c906108c | 1787 | type1 = read_type (pp, objfile); |
46bf5051 | 1788 | type = make_pointer_type (type1, dbx_lookup_type (typenums, objfile)); |
c906108c SS |
1789 | break; |
1790 | ||
c5aa993b | 1791 | case '&': /* Reference to another type */ |
c906108c | 1792 | type1 = read_type (pp, objfile); |
3b224330 AV |
1793 | type = make_reference_type (type1, dbx_lookup_type (typenums, objfile), |
1794 | TYPE_CODE_REF); | |
c906108c SS |
1795 | break; |
1796 | ||
c5aa993b | 1797 | case 'f': /* Function returning another type */ |
c906108c | 1798 | type1 = read_type (pp, objfile); |
0c8b41f1 | 1799 | type = make_function_type (type1, dbx_lookup_type (typenums, objfile)); |
c906108c SS |
1800 | break; |
1801 | ||
da966255 JB |
1802 | case 'g': /* Prototyped function. (Sun) */ |
1803 | { | |
1804 | /* Unresolved questions: | |
1805 | ||
1806 | - According to Sun's ``STABS Interface Manual'', for 'f' | |
1807 | and 'F' symbol descriptors, a `0' in the argument type list | |
1808 | indicates a varargs function. But it doesn't say how 'g' | |
1809 | type descriptors represent that info. Someone with access | |
1810 | to Sun's toolchain should try it out. | |
1811 | ||
1812 | - According to the comment in define_symbol (search for | |
1813 | `process_prototype_types:'), Sun emits integer arguments as | |
1814 | types which ref themselves --- like `void' types. Do we | |
1815 | have to deal with that here, too? Again, someone with | |
1816 | access to Sun's toolchain should try it out and let us | |
1817 | know. */ | |
1818 | ||
1819 | const char *type_start = (*pp) - 1; | |
1820 | struct type *return_type = read_type (pp, objfile); | |
1821 | struct type *func_type | |
46bf5051 | 1822 | = make_function_type (return_type, |
0c8b41f1 | 1823 | dbx_lookup_type (typenums, objfile)); |
da966255 JB |
1824 | struct type_list { |
1825 | struct type *type; | |
1826 | struct type_list *next; | |
1827 | } *arg_types = 0; | |
1828 | int num_args = 0; | |
1829 | ||
1830 | while (**pp && **pp != '#') | |
1831 | { | |
1832 | struct type *arg_type = read_type (pp, objfile); | |
8d749320 | 1833 | struct type_list *newobj = XALLOCA (struct type_list); |
fe978cb0 PA |
1834 | newobj->type = arg_type; |
1835 | newobj->next = arg_types; | |
1836 | arg_types = newobj; | |
da966255 JB |
1837 | num_args++; |
1838 | } | |
1839 | if (**pp == '#') | |
1840 | ++*pp; | |
1841 | else | |
1842 | { | |
b98664d3 | 1843 | complaint (_("Prototyped function type didn't " |
3e43a32a | 1844 | "end arguments with `#':\n%s"), |
23136709 | 1845 | type_start); |
da966255 JB |
1846 | } |
1847 | ||
1848 | /* If there is just one argument whose type is `void', then | |
1849 | that's just an empty argument list. */ | |
1850 | if (arg_types | |
1851 | && ! arg_types->next | |
1852 | && TYPE_CODE (arg_types->type) == TYPE_CODE_VOID) | |
1853 | num_args = 0; | |
1854 | ||
1855 | TYPE_FIELDS (func_type) | |
1856 | = (struct field *) TYPE_ALLOC (func_type, | |
1857 | num_args * sizeof (struct field)); | |
1858 | memset (TYPE_FIELDS (func_type), 0, num_args * sizeof (struct field)); | |
1859 | { | |
1860 | int i; | |
1861 | struct type_list *t; | |
1862 | ||
1863 | /* We stuck each argument type onto the front of the list | |
1864 | when we read it, so the list is reversed. Build the | |
1865 | fields array right-to-left. */ | |
1866 | for (t = arg_types, i = num_args - 1; t; t = t->next, i--) | |
1867 | TYPE_FIELD_TYPE (func_type, i) = t->type; | |
1868 | } | |
1869 | TYPE_NFIELDS (func_type) = num_args; | |
876cecd0 | 1870 | TYPE_PROTOTYPED (func_type) = 1; |
da966255 JB |
1871 | |
1872 | type = func_type; | |
1873 | break; | |
1874 | } | |
1875 | ||
c5aa993b | 1876 | case 'k': /* Const qualifier on some type (Sun) */ |
c906108c | 1877 | type = read_type (pp, objfile); |
d7242108 | 1878 | type = make_cv_type (1, TYPE_VOLATILE (type), type, |
46bf5051 | 1879 | dbx_lookup_type (typenums, objfile)); |
c906108c SS |
1880 | break; |
1881 | ||
c5aa993b | 1882 | case 'B': /* Volatile qual on some type (Sun) */ |
c906108c | 1883 | type = read_type (pp, objfile); |
d7242108 | 1884 | type = make_cv_type (TYPE_CONST (type), 1, type, |
46bf5051 | 1885 | dbx_lookup_type (typenums, objfile)); |
c906108c SS |
1886 | break; |
1887 | ||
1888 | case '@': | |
c5aa993b JM |
1889 | if (isdigit (**pp) || **pp == '(' || **pp == '-') |
1890 | { /* Member (class & variable) type */ | |
c906108c SS |
1891 | /* FIXME -- we should be doing smash_to_XXX types here. */ |
1892 | ||
1893 | struct type *domain = read_type (pp, objfile); | |
1894 | struct type *memtype; | |
1895 | ||
1896 | if (**pp != ',') | |
1897 | /* Invalid member type data format. */ | |
1898 | return error_type (pp, objfile); | |
1899 | ++*pp; | |
1900 | ||
1901 | memtype = read_type (pp, objfile); | |
1902 | type = dbx_alloc_type (typenums, objfile); | |
0d5de010 | 1903 | smash_to_memberptr_type (type, domain, memtype); |
c906108c | 1904 | } |
c5aa993b JM |
1905 | else |
1906 | /* type attribute */ | |
c906108c | 1907 | { |
a121b7c1 | 1908 | const char *attr = *pp; |
433759f7 | 1909 | |
c906108c SS |
1910 | /* Skip to the semicolon. */ |
1911 | while (**pp != ';' && **pp != '\0') | |
1912 | ++(*pp); | |
1913 | if (**pp == '\0') | |
1914 | return error_type (pp, objfile); | |
1915 | else | |
c5aa993b | 1916 | ++ * pp; /* Skip the semicolon. */ |
c906108c SS |
1917 | |
1918 | switch (*attr) | |
1919 | { | |
e2cd42dd | 1920 | case 's': /* Size attribute */ |
c906108c SS |
1921 | type_size = atoi (attr + 1); |
1922 | if (type_size <= 0) | |
1923 | type_size = -1; | |
1924 | break; | |
1925 | ||
e2cd42dd | 1926 | case 'S': /* String attribute */ |
c378eb4e | 1927 | /* FIXME: check to see if following type is array? */ |
c906108c SS |
1928 | is_string = 1; |
1929 | break; | |
1930 | ||
e2cd42dd | 1931 | case 'V': /* Vector attribute */ |
c378eb4e | 1932 | /* FIXME: check to see if following type is array? */ |
e2cd42dd MS |
1933 | is_vector = 1; |
1934 | break; | |
1935 | ||
c906108c SS |
1936 | default: |
1937 | /* Ignore unrecognized type attributes, so future compilers | |
c5aa993b | 1938 | can invent new ones. */ |
c906108c SS |
1939 | break; |
1940 | } | |
1941 | ++*pp; | |
1942 | goto again; | |
1943 | } | |
1944 | break; | |
1945 | ||
c5aa993b | 1946 | case '#': /* Method (class & fn) type */ |
c906108c SS |
1947 | if ((*pp)[0] == '#') |
1948 | { | |
1949 | /* We'll get the parameter types from the name. */ | |
1950 | struct type *return_type; | |
1951 | ||
1952 | (*pp)++; | |
1953 | return_type = read_type (pp, objfile); | |
1954 | if (*(*pp)++ != ';') | |
b98664d3 | 1955 | complaint (_("invalid (minimal) member type " |
3e43a32a | 1956 | "data format at symtab pos %d."), |
23136709 | 1957 | symnum); |
c906108c SS |
1958 | type = allocate_stub_method (return_type); |
1959 | if (typenums[0] != -1) | |
46bf5051 | 1960 | *dbx_lookup_type (typenums, objfile) = type; |
c906108c SS |
1961 | } |
1962 | else | |
1963 | { | |
1964 | struct type *domain = read_type (pp, objfile); | |
1965 | struct type *return_type; | |
ad2f7632 DJ |
1966 | struct field *args; |
1967 | int nargs, varargs; | |
c906108c SS |
1968 | |
1969 | if (**pp != ',') | |
1970 | /* Invalid member type data format. */ | |
1971 | return error_type (pp, objfile); | |
1972 | else | |
1973 | ++(*pp); | |
1974 | ||
1975 | return_type = read_type (pp, objfile); | |
ad2f7632 | 1976 | args = read_args (pp, ';', objfile, &nargs, &varargs); |
0a029df5 DJ |
1977 | if (args == NULL) |
1978 | return error_type (pp, objfile); | |
c906108c | 1979 | type = dbx_alloc_type (typenums, objfile); |
ad2f7632 DJ |
1980 | smash_to_method_type (type, domain, return_type, args, |
1981 | nargs, varargs); | |
c906108c SS |
1982 | } |
1983 | break; | |
1984 | ||
c5aa993b | 1985 | case 'r': /* Range type */ |
94e10a22 | 1986 | type = read_range_type (pp, typenums, type_size, objfile); |
c906108c | 1987 | if (typenums[0] != -1) |
46bf5051 | 1988 | *dbx_lookup_type (typenums, objfile) = type; |
c906108c SS |
1989 | break; |
1990 | ||
1991 | case 'b': | |
c906108c SS |
1992 | { |
1993 | /* Sun ACC builtin int type */ | |
1994 | type = read_sun_builtin_type (pp, typenums, objfile); | |
1995 | if (typenums[0] != -1) | |
46bf5051 | 1996 | *dbx_lookup_type (typenums, objfile) = type; |
c906108c SS |
1997 | } |
1998 | break; | |
1999 | ||
c5aa993b | 2000 | case 'R': /* Sun ACC builtin float type */ |
c906108c SS |
2001 | type = read_sun_floating_type (pp, typenums, objfile); |
2002 | if (typenums[0] != -1) | |
46bf5051 | 2003 | *dbx_lookup_type (typenums, objfile) = type; |
c906108c | 2004 | break; |
c5aa993b JM |
2005 | |
2006 | case 'e': /* Enumeration type */ | |
c906108c SS |
2007 | type = dbx_alloc_type (typenums, objfile); |
2008 | type = read_enum_type (pp, type, objfile); | |
2009 | if (typenums[0] != -1) | |
46bf5051 | 2010 | *dbx_lookup_type (typenums, objfile) = type; |
c906108c SS |
2011 | break; |
2012 | ||
c5aa993b JM |
2013 | case 's': /* Struct type */ |
2014 | case 'u': /* Union type */ | |
2ae1c2d2 JB |
2015 | { |
2016 | enum type_code type_code = TYPE_CODE_UNDEF; | |
2017 | type = dbx_alloc_type (typenums, objfile); | |
2018 | switch (type_descriptor) | |
2019 | { | |
2020 | case 's': | |
2021 | type_code = TYPE_CODE_STRUCT; | |
2022 | break; | |
2023 | case 'u': | |
2024 | type_code = TYPE_CODE_UNION; | |
2025 | break; | |
2026 | } | |
2027 | type = read_struct_type (pp, type, type_code, objfile); | |
2028 | break; | |
2029 | } | |
c906108c | 2030 | |
c5aa993b | 2031 | case 'a': /* Array type */ |
c906108c SS |
2032 | if (**pp != 'r') |
2033 | return error_type (pp, objfile); | |
2034 | ++*pp; | |
c5aa993b | 2035 | |
c906108c SS |
2036 | type = dbx_alloc_type (typenums, objfile); |
2037 | type = read_array_type (pp, type, objfile); | |
2038 | if (is_string) | |
2039 | TYPE_CODE (type) = TYPE_CODE_STRING; | |
e2cd42dd | 2040 | if (is_vector) |
ea37ba09 | 2041 | make_vector_type (type); |
c906108c SS |
2042 | break; |
2043 | ||
6b1755ce | 2044 | case 'S': /* Set type */ |
c906108c | 2045 | type1 = read_type (pp, objfile); |
c5aa993b | 2046 | type = create_set_type ((struct type *) NULL, type1); |
c906108c | 2047 | if (typenums[0] != -1) |
46bf5051 | 2048 | *dbx_lookup_type (typenums, objfile) = type; |
c906108c SS |
2049 | break; |
2050 | ||
2051 | default: | |
c378eb4e MS |
2052 | --*pp; /* Go back to the symbol in error. */ |
2053 | /* Particularly important if it was \0! */ | |
c906108c SS |
2054 | return error_type (pp, objfile); |
2055 | } | |
2056 | ||
2057 | if (type == 0) | |
2058 | { | |
8a3fe4f8 | 2059 | warning (_("GDB internal error, type is NULL in stabsread.c.")); |
c906108c SS |
2060 | return error_type (pp, objfile); |
2061 | } | |
2062 | ||
2063 | /* Size specified in a type attribute overrides any other size. */ | |
2064 | if (type_size != -1) | |
2065 | TYPE_LENGTH (type) = (type_size + TARGET_CHAR_BIT - 1) / TARGET_CHAR_BIT; | |
2066 | ||
2067 | return type; | |
2068 | } | |
2069 | \f | |
2070 | /* RS/6000 xlc/dbx combination uses a set of builtin types, starting from -1. | |
c378eb4e | 2071 | Return the proper type node for a given builtin type number. */ |
c906108c | 2072 | |
46bf5051 UW |
2073 | static const struct objfile_data *rs6000_builtin_type_data; |
2074 | ||
c906108c | 2075 | static struct type * |
46bf5051 | 2076 | rs6000_builtin_type (int typenum, struct objfile *objfile) |
c906108c | 2077 | { |
19ba03f4 SM |
2078 | struct type **negative_types |
2079 | = (struct type **) objfile_data (objfile, rs6000_builtin_type_data); | |
46bf5051 | 2080 | |
c906108c SS |
2081 | /* We recognize types numbered from -NUMBER_RECOGNIZED to -1. */ |
2082 | #define NUMBER_RECOGNIZED 34 | |
c906108c SS |
2083 | struct type *rettype = NULL; |
2084 | ||
2085 | if (typenum >= 0 || typenum < -NUMBER_RECOGNIZED) | |
2086 | { | |
b98664d3 | 2087 | complaint (_("Unknown builtin type %d"), typenum); |
46bf5051 | 2088 | return objfile_type (objfile)->builtin_error; |
c906108c | 2089 | } |
46bf5051 UW |
2090 | |
2091 | if (!negative_types) | |
2092 | { | |
2093 | /* This includes an empty slot for type number -0. */ | |
2094 | negative_types = OBSTACK_CALLOC (&objfile->objfile_obstack, | |
2095 | NUMBER_RECOGNIZED + 1, struct type *); | |
2096 | set_objfile_data (objfile, rs6000_builtin_type_data, negative_types); | |
2097 | } | |
2098 | ||
c906108c SS |
2099 | if (negative_types[-typenum] != NULL) |
2100 | return negative_types[-typenum]; | |
2101 | ||
2102 | #if TARGET_CHAR_BIT != 8 | |
c5aa993b | 2103 | #error This code wrong for TARGET_CHAR_BIT not 8 |
c906108c SS |
2104 | /* These definitions all assume that TARGET_CHAR_BIT is 8. I think |
2105 | that if that ever becomes not true, the correct fix will be to | |
2106 | make the size in the struct type to be in bits, not in units of | |
2107 | TARGET_CHAR_BIT. */ | |
2108 | #endif | |
2109 | ||
2110 | switch (-typenum) | |
2111 | { | |
2112 | case 1: | |
2113 | /* The size of this and all the other types are fixed, defined | |
c5aa993b JM |
2114 | by the debugging format. If there is a type called "int" which |
2115 | is other than 32 bits, then it should use a new negative type | |
2116 | number (or avoid negative type numbers for that case). | |
2117 | See stabs.texinfo. */ | |
19f392bc | 2118 | rettype = init_integer_type (objfile, 32, 0, "int"); |
c906108c SS |
2119 | break; |
2120 | case 2: | |
19f392bc | 2121 | rettype = init_integer_type (objfile, 8, 0, "char"); |
c413c448 | 2122 | TYPE_NOSIGN (rettype) = 1; |
c906108c SS |
2123 | break; |
2124 | case 3: | |
19f392bc | 2125 | rettype = init_integer_type (objfile, 16, 0, "short"); |
c906108c SS |
2126 | break; |
2127 | case 4: | |
19f392bc | 2128 | rettype = init_integer_type (objfile, 32, 0, "long"); |
c906108c SS |
2129 | break; |
2130 | case 5: | |
19f392bc | 2131 | rettype = init_integer_type (objfile, 8, 1, "unsigned char"); |
c906108c SS |
2132 | break; |
2133 | case 6: | |
19f392bc | 2134 | rettype = init_integer_type (objfile, 8, 0, "signed char"); |
c906108c SS |
2135 | break; |
2136 | case 7: | |
19f392bc | 2137 | rettype = init_integer_type (objfile, 16, 1, "unsigned short"); |
c906108c SS |
2138 | break; |
2139 | case 8: | |
19f392bc | 2140 | rettype = init_integer_type (objfile, 32, 1, "unsigned int"); |
c906108c SS |
2141 | break; |
2142 | case 9: | |
19f392bc | 2143 | rettype = init_integer_type (objfile, 32, 1, "unsigned"); |
89acf84d | 2144 | break; |
c906108c | 2145 | case 10: |
19f392bc | 2146 | rettype = init_integer_type (objfile, 32, 1, "unsigned long"); |
c906108c SS |
2147 | break; |
2148 | case 11: | |
77b7c781 | 2149 | rettype = init_type (objfile, TYPE_CODE_VOID, TARGET_CHAR_BIT, "void"); |
c906108c SS |
2150 | break; |
2151 | case 12: | |
2152 | /* IEEE single precision (32 bit). */ | |
49f190bc UW |
2153 | rettype = init_float_type (objfile, 32, "float", |
2154 | floatformats_ieee_single); | |
c906108c SS |
2155 | break; |
2156 | case 13: | |
2157 | /* IEEE double precision (64 bit). */ | |
49f190bc UW |
2158 | rettype = init_float_type (objfile, 64, "double", |
2159 | floatformats_ieee_double); | |
c906108c SS |
2160 | break; |
2161 | case 14: | |
2162 | /* This is an IEEE double on the RS/6000, and different machines with | |
c5aa993b JM |
2163 | different sizes for "long double" should use different negative |
2164 | type numbers. See stabs.texinfo. */ | |
49f190bc UW |
2165 | rettype = init_float_type (objfile, 64, "long double", |
2166 | floatformats_ieee_double); | |
c906108c SS |
2167 | break; |
2168 | case 15: | |
19f392bc | 2169 | rettype = init_integer_type (objfile, 32, 0, "integer"); |
c906108c SS |
2170 | break; |
2171 | case 16: | |
19f392bc | 2172 | rettype = init_boolean_type (objfile, 32, 1, "boolean"); |
c906108c SS |
2173 | break; |
2174 | case 17: | |
49f190bc UW |
2175 | rettype = init_float_type (objfile, 32, "short real", |
2176 | floatformats_ieee_single); | |
c906108c SS |
2177 | break; |
2178 | case 18: | |
49f190bc UW |
2179 | rettype = init_float_type (objfile, 64, "real", |
2180 | floatformats_ieee_double); | |
c906108c SS |
2181 | break; |
2182 | case 19: | |
19f392bc | 2183 | rettype = init_type (objfile, TYPE_CODE_ERROR, 0, "stringptr"); |
c906108c SS |
2184 | break; |
2185 | case 20: | |
19f392bc | 2186 | rettype = init_character_type (objfile, 8, 1, "character"); |
c906108c SS |
2187 | break; |
2188 | case 21: | |
19f392bc | 2189 | rettype = init_boolean_type (objfile, 8, 1, "logical*1"); |
c906108c SS |
2190 | break; |
2191 | case 22: | |
19f392bc | 2192 | rettype = init_boolean_type (objfile, 16, 1, "logical*2"); |
c906108c SS |
2193 | break; |
2194 | case 23: | |
19f392bc | 2195 | rettype = init_boolean_type (objfile, 32, 1, "logical*4"); |
c906108c SS |
2196 | break; |
2197 | case 24: | |
19f392bc | 2198 | rettype = init_boolean_type (objfile, 32, 1, "logical"); |
c906108c SS |
2199 | break; |
2200 | case 25: | |
2201 | /* Complex type consisting of two IEEE single precision values. */ | |
19f392bc UW |
2202 | rettype = init_complex_type (objfile, "complex", |
2203 | rs6000_builtin_type (12, objfile)); | |
c906108c SS |
2204 | break; |
2205 | case 26: | |
2206 | /* Complex type consisting of two IEEE double precision values. */ | |
19f392bc UW |
2207 | rettype = init_complex_type (objfile, "double complex", |
2208 | rs6000_builtin_type (13, objfile)); | |
c906108c SS |
2209 | break; |
2210 | case 27: | |
19f392bc | 2211 | rettype = init_integer_type (objfile, 8, 0, "integer*1"); |
c906108c SS |
2212 | break; |
2213 | case 28: | |
19f392bc | 2214 | rettype = init_integer_type (objfile, 16, 0, "integer*2"); |
c906108c SS |
2215 | break; |
2216 | case 29: | |
19f392bc | 2217 | rettype = init_integer_type (objfile, 32, 0, "integer*4"); |
c906108c SS |
2218 | break; |
2219 | case 30: | |
19f392bc | 2220 | rettype = init_character_type (objfile, 16, 0, "wchar"); |
c906108c SS |
2221 | break; |
2222 | case 31: | |
19f392bc | 2223 | rettype = init_integer_type (objfile, 64, 0, "long long"); |
c906108c SS |
2224 | break; |
2225 | case 32: | |
19f392bc | 2226 | rettype = init_integer_type (objfile, 64, 1, "unsigned long long"); |
c906108c SS |
2227 | break; |
2228 | case 33: | |
19f392bc | 2229 | rettype = init_integer_type (objfile, 64, 1, "logical*8"); |
c906108c SS |
2230 | break; |
2231 | case 34: | |
19f392bc | 2232 | rettype = init_integer_type (objfile, 64, 0, "integer*8"); |
c906108c SS |
2233 | break; |
2234 | } | |
2235 | negative_types[-typenum] = rettype; | |
2236 | return rettype; | |
2237 | } | |
2238 | \f | |
2239 | /* This page contains subroutines of read_type. */ | |
2240 | ||
0d5cff50 DE |
2241 | /* Wrapper around method_name_from_physname to flag a complaint |
2242 | if there is an error. */ | |
de17c821 | 2243 | |
0d5cff50 DE |
2244 | static char * |
2245 | stabs_method_name_from_physname (const char *physname) | |
de17c821 DJ |
2246 | { |
2247 | char *method_name; | |
2248 | ||
2249 | method_name = method_name_from_physname (physname); | |
2250 | ||
2251 | if (method_name == NULL) | |
c263362b | 2252 | { |
b98664d3 | 2253 | complaint (_("Method has bad physname %s\n"), physname); |
0d5cff50 | 2254 | return NULL; |
c263362b | 2255 | } |
de17c821 | 2256 | |
0d5cff50 | 2257 | return method_name; |
de17c821 DJ |
2258 | } |
2259 | ||
c906108c SS |
2260 | /* Read member function stabs info for C++ classes. The form of each member |
2261 | function data is: | |
2262 | ||
c5aa993b | 2263 | NAME :: TYPENUM[=type definition] ARGS : PHYSNAME ; |
c906108c SS |
2264 | |
2265 | An example with two member functions is: | |
2266 | ||
c5aa993b | 2267 | afunc1::20=##15;:i;2A.;afunc2::20:i;2A.; |
c906108c SS |
2268 | |
2269 | For the case of overloaded operators, the format is op$::*.funcs, where | |
2270 | $ is the CPLUS_MARKER (usually '$'), `*' holds the place for an operator | |
2271 | name (such as `+=') and `.' marks the end of the operator name. | |
2272 | ||
2273 | Returns 1 for success, 0 for failure. */ | |
2274 | ||
2275 | static int | |
a121b7c1 PA |
2276 | read_member_functions (struct field_info *fip, const char **pp, |
2277 | struct type *type, struct objfile *objfile) | |
c906108c SS |
2278 | { |
2279 | int nfn_fields = 0; | |
2280 | int length = 0; | |
c906108c SS |
2281 | int i; |
2282 | struct next_fnfield | |
2283 | { | |
2284 | struct next_fnfield *next; | |
2285 | struct fn_field fn_field; | |
c5aa993b JM |
2286 | } |
2287 | *sublist; | |
c906108c SS |
2288 | struct type *look_ahead_type; |
2289 | struct next_fnfieldlist *new_fnlist; | |
2290 | struct next_fnfield *new_sublist; | |
2291 | char *main_fn_name; | |
a121b7c1 | 2292 | const char *p; |
c5aa993b | 2293 | |
c906108c | 2294 | /* Process each list until we find something that is not a member function |
c378eb4e | 2295 | or find the end of the functions. */ |
c906108c SS |
2296 | |
2297 | while (**pp != ';') | |
2298 | { | |
2299 | /* We should be positioned at the start of the function name. | |
c5aa993b | 2300 | Scan forward to find the first ':' and if it is not the |
c378eb4e | 2301 | first of a "::" delimiter, then this is not a member function. */ |
c906108c SS |
2302 | p = *pp; |
2303 | while (*p != ':') | |
2304 | { | |
2305 | p++; | |
2306 | } | |
2307 | if (p[1] != ':') | |
2308 | { | |
2309 | break; | |
2310 | } | |
2311 | ||
2312 | sublist = NULL; | |
2313 | look_ahead_type = NULL; | |
2314 | length = 0; | |
c5aa993b | 2315 | |
8d749320 | 2316 | new_fnlist = XCNEW (struct next_fnfieldlist); |
b8c9b27d | 2317 | make_cleanup (xfree, new_fnlist); |
c5aa993b | 2318 | |
c906108c SS |
2319 | if ((*pp)[0] == 'o' && (*pp)[1] == 'p' && is_cplus_marker ((*pp)[2])) |
2320 | { | |
2321 | /* This is a completely wierd case. In order to stuff in the | |
2322 | names that might contain colons (the usual name delimiter), | |
2323 | Mike Tiemann defined a different name format which is | |
2324 | signalled if the identifier is "op$". In that case, the | |
2325 | format is "op$::XXXX." where XXXX is the name. This is | |
2326 | used for names like "+" or "=". YUUUUUUUK! FIXME! */ | |
2327 | /* This lets the user type "break operator+". | |
2328 | We could just put in "+" as the name, but that wouldn't | |
2329 | work for "*". */ | |
8343f86c | 2330 | static char opname[32] = "op$"; |
c906108c | 2331 | char *o = opname + 3; |
c5aa993b | 2332 | |
c906108c SS |
2333 | /* Skip past '::'. */ |
2334 | *pp = p + 2; | |
2335 | ||
2336 | STABS_CONTINUE (pp, objfile); | |
2337 | p = *pp; | |
2338 | while (*p != '.') | |
2339 | { | |
2340 | *o++ = *p++; | |
2341 | } | |
2342 | main_fn_name = savestring (opname, o - opname); | |
2343 | /* Skip past '.' */ | |
2344 | *pp = p + 1; | |
2345 | } | |
2346 | else | |
2347 | { | |
2348 | main_fn_name = savestring (*pp, p - *pp); | |
2349 | /* Skip past '::'. */ | |
2350 | *pp = p + 2; | |
2351 | } | |
c5aa993b JM |
2352 | new_fnlist->fn_fieldlist.name = main_fn_name; |
2353 | ||
c906108c SS |
2354 | do |
2355 | { | |
8d749320 | 2356 | new_sublist = XCNEW (struct next_fnfield); |
b8c9b27d | 2357 | make_cleanup (xfree, new_sublist); |
c5aa993b | 2358 | |
c906108c SS |
2359 | /* Check for and handle cretinous dbx symbol name continuation! */ |
2360 | if (look_ahead_type == NULL) | |
2361 | { | |
c378eb4e | 2362 | /* Normal case. */ |
c906108c | 2363 | STABS_CONTINUE (pp, objfile); |
c5aa993b JM |
2364 | |
2365 | new_sublist->fn_field.type = read_type (pp, objfile); | |
c906108c SS |
2366 | if (**pp != ':') |
2367 | { | |
2368 | /* Invalid symtab info for member function. */ | |
2369 | return 0; | |
2370 | } | |
2371 | } | |
2372 | else | |
2373 | { | |
2374 | /* g++ version 1 kludge */ | |
c5aa993b | 2375 | new_sublist->fn_field.type = look_ahead_type; |
c906108c SS |
2376 | look_ahead_type = NULL; |
2377 | } | |
c5aa993b | 2378 | |
c906108c SS |
2379 | (*pp)++; |
2380 | p = *pp; | |
2381 | while (*p != ';') | |
2382 | { | |
2383 | p++; | |
2384 | } | |
c5aa993b | 2385 | |
09e2d7c7 DE |
2386 | /* These are methods, not functions. */ |
2387 | if (TYPE_CODE (new_sublist->fn_field.type) == TYPE_CODE_FUNC) | |
2388 | TYPE_CODE (new_sublist->fn_field.type) = TYPE_CODE_METHOD; | |
2389 | else | |
2390 | gdb_assert (TYPE_CODE (new_sublist->fn_field.type) | |
2391 | == TYPE_CODE_METHOD); | |
c906108c | 2392 | |
09e2d7c7 | 2393 | /* If this is just a stub, then we don't have the real name here. */ |
74a9bb82 | 2394 | if (TYPE_STUB (new_sublist->fn_field.type)) |
c906108c | 2395 | { |
4bfb94b8 | 2396 | if (!TYPE_SELF_TYPE (new_sublist->fn_field.type)) |
09e2d7c7 | 2397 | set_type_self_type (new_sublist->fn_field.type, type); |
c5aa993b | 2398 | new_sublist->fn_field.is_stub = 1; |
c906108c | 2399 | } |
09e2d7c7 | 2400 | |
c5aa993b | 2401 | new_sublist->fn_field.physname = savestring (*pp, p - *pp); |
c906108c | 2402 | *pp = p + 1; |
c5aa993b | 2403 | |
c906108c SS |
2404 | /* Set this member function's visibility fields. */ |
2405 | switch (*(*pp)++) | |
2406 | { | |
c5aa993b JM |
2407 | case VISIBILITY_PRIVATE: |
2408 | new_sublist->fn_field.is_private = 1; | |
2409 | break; | |
2410 | case VISIBILITY_PROTECTED: | |
2411 | new_sublist->fn_field.is_protected = 1; | |
2412 | break; | |
c906108c | 2413 | } |
c5aa993b | 2414 | |
c906108c SS |
2415 | STABS_CONTINUE (pp, objfile); |
2416 | switch (**pp) | |
2417 | { | |
c378eb4e | 2418 | case 'A': /* Normal functions. */ |
c5aa993b JM |
2419 | new_sublist->fn_field.is_const = 0; |
2420 | new_sublist->fn_field.is_volatile = 0; | |
2421 | (*pp)++; | |
2422 | break; | |
c378eb4e | 2423 | case 'B': /* `const' member functions. */ |
c5aa993b JM |
2424 | new_sublist->fn_field.is_const = 1; |
2425 | new_sublist->fn_field.is_volatile = 0; | |
2426 | (*pp)++; | |
2427 | break; | |
c378eb4e | 2428 | case 'C': /* `volatile' member function. */ |
c5aa993b JM |
2429 | new_sublist->fn_field.is_const = 0; |
2430 | new_sublist->fn_field.is_volatile = 1; | |
2431 | (*pp)++; | |
2432 | break; | |
c378eb4e | 2433 | case 'D': /* `const volatile' member function. */ |
c5aa993b JM |
2434 | new_sublist->fn_field.is_const = 1; |
2435 | new_sublist->fn_field.is_volatile = 1; | |
2436 | (*pp)++; | |
2437 | break; | |
3e43a32a | 2438 | case '*': /* File compiled with g++ version 1 -- |
c378eb4e | 2439 | no info. */ |
c5aa993b JM |
2440 | case '?': |
2441 | case '.': | |
2442 | break; | |
2443 | default: | |
b98664d3 | 2444 | complaint (_("const/volatile indicator missing, got '%c'"), |
3e43a32a | 2445 | **pp); |
c5aa993b | 2446 | break; |
c906108c | 2447 | } |
c5aa993b | 2448 | |
c906108c SS |
2449 | switch (*(*pp)++) |
2450 | { | |
c5aa993b | 2451 | case '*': |
c906108c SS |
2452 | { |
2453 | int nbits; | |
c5aa993b | 2454 | /* virtual member function, followed by index. |
c906108c SS |
2455 | The sign bit is set to distinguish pointers-to-methods |
2456 | from virtual function indicies. Since the array is | |
2457 | in words, the quantity must be shifted left by 1 | |
2458 | on 16 bit machine, and by 2 on 32 bit machine, forcing | |
2459 | the sign bit out, and usable as a valid index into | |
2460 | the array. Remove the sign bit here. */ | |
c5aa993b | 2461 | new_sublist->fn_field.voffset = |
94e10a22 | 2462 | (0x7fffffff & read_huge_number (pp, ';', &nbits, 0)) + 2; |
c906108c SS |
2463 | if (nbits != 0) |
2464 | return 0; | |
c5aa993b | 2465 | |
c906108c SS |
2466 | STABS_CONTINUE (pp, objfile); |
2467 | if (**pp == ';' || **pp == '\0') | |
2468 | { | |
2469 | /* Must be g++ version 1. */ | |
c5aa993b | 2470 | new_sublist->fn_field.fcontext = 0; |
c906108c SS |
2471 | } |
2472 | else | |
2473 | { | |
2474 | /* Figure out from whence this virtual function came. | |
2475 | It may belong to virtual function table of | |
2476 | one of its baseclasses. */ | |
2477 | look_ahead_type = read_type (pp, objfile); | |
2478 | if (**pp == ':') | |
2479 | { | |
c378eb4e | 2480 | /* g++ version 1 overloaded methods. */ |
c906108c SS |
2481 | } |
2482 | else | |
2483 | { | |
c5aa993b | 2484 | new_sublist->fn_field.fcontext = look_ahead_type; |
c906108c SS |
2485 | if (**pp != ';') |
2486 | { | |
2487 | return 0; | |
2488 | } | |
2489 | else | |
2490 | { | |
2491 | ++*pp; | |
2492 | } | |
2493 | look_ahead_type = NULL; | |
2494 | } | |
2495 | } | |
2496 | break; | |
2497 | } | |
c5aa993b JM |
2498 | case '?': |
2499 | /* static member function. */ | |
4ea09c10 PS |
2500 | { |
2501 | int slen = strlen (main_fn_name); | |
2502 | ||
2503 | new_sublist->fn_field.voffset = VOFFSET_STATIC; | |
2504 | ||
2505 | /* For static member functions, we can't tell if they | |
2506 | are stubbed, as they are put out as functions, and not as | |
2507 | methods. | |
2508 | GCC v2 emits the fully mangled name if | |
2509 | dbxout.c:flag_minimal_debug is not set, so we have to | |
2510 | detect a fully mangled physname here and set is_stub | |
2511 | accordingly. Fully mangled physnames in v2 start with | |
2512 | the member function name, followed by two underscores. | |
2513 | GCC v3 currently always emits stubbed member functions, | |
2514 | but with fully mangled physnames, which start with _Z. */ | |
2515 | if (!(strncmp (new_sublist->fn_field.physname, | |
2516 | main_fn_name, slen) == 0 | |
2517 | && new_sublist->fn_field.physname[slen] == '_' | |
2518 | && new_sublist->fn_field.physname[slen + 1] == '_')) | |
2519 | { | |
2520 | new_sublist->fn_field.is_stub = 1; | |
2521 | } | |
2522 | break; | |
2523 | } | |
c5aa993b JM |
2524 | |
2525 | default: | |
2526 | /* error */ | |
b98664d3 | 2527 | complaint (_("member function type missing, got '%c'"), |
3e43a32a | 2528 | (*pp)[-1]); |
86a73007 TT |
2529 | /* Normal member function. */ |
2530 | /* Fall through. */ | |
c5aa993b JM |
2531 | |
2532 | case '.': | |
2533 | /* normal member function. */ | |
2534 | new_sublist->fn_field.voffset = 0; | |
2535 | new_sublist->fn_field.fcontext = 0; | |
2536 | break; | |
c906108c | 2537 | } |
c5aa993b JM |
2538 | |
2539 | new_sublist->next = sublist; | |
c906108c SS |
2540 | sublist = new_sublist; |
2541 | length++; | |
2542 | STABS_CONTINUE (pp, objfile); | |
2543 | } | |
2544 | while (**pp != ';' && **pp != '\0'); | |
c5aa993b | 2545 | |
c906108c | 2546 | (*pp)++; |
0c867556 | 2547 | STABS_CONTINUE (pp, objfile); |
c5aa993b | 2548 | |
0c867556 PS |
2549 | /* Skip GCC 3.X member functions which are duplicates of the callable |
2550 | constructor/destructor. */ | |
6cbbcdfe KS |
2551 | if (strcmp_iw (main_fn_name, "__base_ctor ") == 0 |
2552 | || strcmp_iw (main_fn_name, "__base_dtor ") == 0 | |
0c867556 | 2553 | || strcmp (main_fn_name, "__deleting_dtor") == 0) |
c906108c | 2554 | { |
0c867556 | 2555 | xfree (main_fn_name); |
c906108c | 2556 | } |
0c867556 PS |
2557 | else |
2558 | { | |
de17c821 DJ |
2559 | int has_stub = 0; |
2560 | int has_destructor = 0, has_other = 0; | |
2561 | int is_v3 = 0; | |
2562 | struct next_fnfield *tmp_sublist; | |
2563 | ||
2564 | /* Various versions of GCC emit various mostly-useless | |
2565 | strings in the name field for special member functions. | |
2566 | ||
2567 | For stub methods, we need to defer correcting the name | |
2568 | until we are ready to unstub the method, because the current | |
2569 | name string is used by gdb_mangle_name. The only stub methods | |
2570 | of concern here are GNU v2 operators; other methods have their | |
2571 | names correct (see caveat below). | |
2572 | ||
2573 | For non-stub methods, in GNU v3, we have a complete physname. | |
2574 | Therefore we can safely correct the name now. This primarily | |
2575 | affects constructors and destructors, whose name will be | |
2576 | __comp_ctor or __comp_dtor instead of Foo or ~Foo. Cast | |
2577 | operators will also have incorrect names; for instance, | |
2578 | "operator int" will be named "operator i" (i.e. the type is | |
2579 | mangled). | |
2580 | ||
2581 | For non-stub methods in GNU v2, we have no easy way to | |
2582 | know if we have a complete physname or not. For most | |
2583 | methods the result depends on the platform (if CPLUS_MARKER | |
2584 | can be `$' or `.', it will use minimal debug information, or | |
2585 | otherwise the full physname will be included). | |
2586 | ||
2587 | Rather than dealing with this, we take a different approach. | |
2588 | For v3 mangled names, we can use the full physname; for v2, | |
2589 | we use cplus_demangle_opname (which is actually v2 specific), | |
2590 | because the only interesting names are all operators - once again | |
2591 | barring the caveat below. Skip this process if any method in the | |
2592 | group is a stub, to prevent our fouling up the workings of | |
2593 | gdb_mangle_name. | |
2594 | ||
2595 | The caveat: GCC 2.95.x (and earlier?) put constructors and | |
2596 | destructors in the same method group. We need to split this | |
2597 | into two groups, because they should have different names. | |
2598 | So for each method group we check whether it contains both | |
2599 | routines whose physname appears to be a destructor (the physnames | |
2600 | for and destructors are always provided, due to quirks in v2 | |
2601 | mangling) and routines whose physname does not appear to be a | |
2602 | destructor. If so then we break up the list into two halves. | |
2603 | Even if the constructors and destructors aren't in the same group | |
2604 | the destructor will still lack the leading tilde, so that also | |
2605 | needs to be fixed. | |
2606 | ||
2607 | So, to summarize what we expect and handle here: | |
2608 | ||
2609 | Given Given Real Real Action | |
2610 | method name physname physname method name | |
2611 | ||
2612 | __opi [none] __opi__3Foo operator int opname | |
3e43a32a MS |
2613 | [now or later] |
2614 | Foo _._3Foo _._3Foo ~Foo separate and | |
de17c821 DJ |
2615 | rename |
2616 | operator i _ZN3FoocviEv _ZN3FoocviEv operator int demangle | |
2617 | __comp_ctor _ZN3FooC1ERKS_ _ZN3FooC1ERKS_ Foo demangle | |
2618 | */ | |
2619 | ||
2620 | tmp_sublist = sublist; | |
2621 | while (tmp_sublist != NULL) | |
2622 | { | |
2623 | if (tmp_sublist->fn_field.is_stub) | |
2624 | has_stub = 1; | |
2625 | if (tmp_sublist->fn_field.physname[0] == '_' | |
2626 | && tmp_sublist->fn_field.physname[1] == 'Z') | |
2627 | is_v3 = 1; | |
2628 | ||
2629 | if (is_destructor_name (tmp_sublist->fn_field.physname)) | |
2630 | has_destructor++; | |
2631 | else | |
2632 | has_other++; | |
2633 | ||
2634 | tmp_sublist = tmp_sublist->next; | |
2635 | } | |
2636 | ||
2637 | if (has_destructor && has_other) | |
2638 | { | |
2639 | struct next_fnfieldlist *destr_fnlist; | |
2640 | struct next_fnfield *last_sublist; | |
2641 | ||
2642 | /* Create a new fn_fieldlist for the destructors. */ | |
2643 | ||
8d749320 | 2644 | destr_fnlist = XCNEW (struct next_fnfieldlist); |
de17c821 | 2645 | make_cleanup (xfree, destr_fnlist); |
8d749320 | 2646 | |
de17c821 | 2647 | destr_fnlist->fn_fieldlist.name |
48cb83fd JK |
2648 | = obconcat (&objfile->objfile_obstack, "~", |
2649 | new_fnlist->fn_fieldlist.name, (char *) NULL); | |
de17c821 | 2650 | |
8d749320 SM |
2651 | destr_fnlist->fn_fieldlist.fn_fields = |
2652 | XOBNEWVEC (&objfile->objfile_obstack, | |
2653 | struct fn_field, has_destructor); | |
de17c821 DJ |
2654 | memset (destr_fnlist->fn_fieldlist.fn_fields, 0, |
2655 | sizeof (struct fn_field) * has_destructor); | |
2656 | tmp_sublist = sublist; | |
2657 | last_sublist = NULL; | |
2658 | i = 0; | |
2659 | while (tmp_sublist != NULL) | |
2660 | { | |
2661 | if (!is_destructor_name (tmp_sublist->fn_field.physname)) | |
2662 | { | |
2663 | tmp_sublist = tmp_sublist->next; | |
2664 | continue; | |
2665 | } | |
2666 | ||
2667 | destr_fnlist->fn_fieldlist.fn_fields[i++] | |
2668 | = tmp_sublist->fn_field; | |
2669 | if (last_sublist) | |
2670 | last_sublist->next = tmp_sublist->next; | |
2671 | else | |
2672 | sublist = tmp_sublist->next; | |
2673 | last_sublist = tmp_sublist; | |
2674 | tmp_sublist = tmp_sublist->next; | |
2675 | } | |
2676 | ||
2677 | destr_fnlist->fn_fieldlist.length = has_destructor; | |
2678 | destr_fnlist->next = fip->fnlist; | |
2679 | fip->fnlist = destr_fnlist; | |
2680 | nfn_fields++; | |
de17c821 DJ |
2681 | length -= has_destructor; |
2682 | } | |
2683 | else if (is_v3) | |
2684 | { | |
2685 | /* v3 mangling prevents the use of abbreviated physnames, | |
2686 | so we can do this here. There are stubbed methods in v3 | |
2687 | only: | |
2688 | - in -gstabs instead of -gstabs+ | |
2689 | - or for static methods, which are output as a function type | |
2690 | instead of a method type. */ | |
0d5cff50 DE |
2691 | char *new_method_name = |
2692 | stabs_method_name_from_physname (sublist->fn_field.physname); | |
de17c821 | 2693 | |
0d5cff50 DE |
2694 | if (new_method_name != NULL |
2695 | && strcmp (new_method_name, | |
2696 | new_fnlist->fn_fieldlist.name) != 0) | |
2697 | { | |
2698 | new_fnlist->fn_fieldlist.name = new_method_name; | |
2699 | xfree (main_fn_name); | |
2700 | } | |
2701 | else | |
2702 | xfree (new_method_name); | |
de17c821 DJ |
2703 | } |
2704 | else if (has_destructor && new_fnlist->fn_fieldlist.name[0] != '~') | |
2705 | { | |
1754f103 | 2706 | new_fnlist->fn_fieldlist.name = |
0d5cff50 DE |
2707 | obconcat (&objfile->objfile_obstack, |
2708 | "~", main_fn_name, (char *)NULL); | |
de17c821 DJ |
2709 | xfree (main_fn_name); |
2710 | } | |
2711 | else if (!has_stub) | |
2712 | { | |
2713 | char dem_opname[256]; | |
2714 | int ret; | |
433759f7 | 2715 | |
de17c821 DJ |
2716 | ret = cplus_demangle_opname (new_fnlist->fn_fieldlist.name, |
2717 | dem_opname, DMGL_ANSI); | |
2718 | if (!ret) | |
2719 | ret = cplus_demangle_opname (new_fnlist->fn_fieldlist.name, | |
2720 | dem_opname, 0); | |
2721 | if (ret) | |
2722 | new_fnlist->fn_fieldlist.name | |
224c3ddb SM |
2723 | = ((const char *) |
2724 | obstack_copy0 (&objfile->objfile_obstack, dem_opname, | |
2725 | strlen (dem_opname))); | |
0d5cff50 | 2726 | xfree (main_fn_name); |
de17c821 DJ |
2727 | } |
2728 | ||
e39db4db SM |
2729 | new_fnlist->fn_fieldlist.fn_fields |
2730 | = OBSTACK_CALLOC (&objfile->objfile_obstack, length, fn_field); | |
0c867556 PS |
2731 | for (i = length; (i--, sublist); sublist = sublist->next) |
2732 | { | |
2733 | new_fnlist->fn_fieldlist.fn_fields[i] = sublist->fn_field; | |
2734 | } | |
c5aa993b | 2735 | |
0c867556 PS |
2736 | new_fnlist->fn_fieldlist.length = length; |
2737 | new_fnlist->next = fip->fnlist; | |
2738 | fip->fnlist = new_fnlist; | |
2739 | nfn_fields++; | |
0c867556 | 2740 | } |
c906108c SS |
2741 | } |
2742 | ||
2743 | if (nfn_fields) | |
2744 | { | |
2745 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
2746 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
2747 | TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * nfn_fields); | |
2748 | memset (TYPE_FN_FIELDLISTS (type), 0, | |
2749 | sizeof (struct fn_fieldlist) * nfn_fields); | |
2750 | TYPE_NFN_FIELDS (type) = nfn_fields; | |
c906108c SS |
2751 | } |
2752 | ||
2753 | return 1; | |
2754 | } | |
2755 | ||
2756 | /* Special GNU C++ name. | |
2757 | ||
2758 | Returns 1 for success, 0 for failure. "failure" means that we can't | |
2759 | keep parsing and it's time for error_type(). */ | |
2760 | ||
2761 | static int | |
a121b7c1 | 2762 | read_cpp_abbrev (struct field_info *fip, const char **pp, struct type *type, |
fba45db2 | 2763 | struct objfile *objfile) |
c906108c | 2764 | { |
a121b7c1 | 2765 | const char *p; |
0d5cff50 | 2766 | const char *name; |
c906108c SS |
2767 | char cpp_abbrev; |
2768 | struct type *context; | |
2769 | ||
2770 | p = *pp; | |
2771 | if (*++p == 'v') | |
2772 | { | |
2773 | name = NULL; | |
2774 | cpp_abbrev = *++p; | |
2775 | ||
2776 | *pp = p + 1; | |
2777 | ||
2778 | /* At this point, *pp points to something like "22:23=*22...", | |
c5aa993b JM |
2779 | where the type number before the ':' is the "context" and |
2780 | everything after is a regular type definition. Lookup the | |
c378eb4e | 2781 | type, find it's name, and construct the field name. */ |
c906108c SS |
2782 | |
2783 | context = read_type (pp, objfile); | |
2784 | ||
2785 | switch (cpp_abbrev) | |
2786 | { | |
c5aa993b | 2787 | case 'f': /* $vf -- a virtual function table pointer */ |
a737d952 | 2788 | name = TYPE_NAME (context); |
c2bd2ed9 | 2789 | if (name == NULL) |
433759f7 MS |
2790 | { |
2791 | name = ""; | |
2792 | } | |
48cb83fd JK |
2793 | fip->list->field.name = obconcat (&objfile->objfile_obstack, |
2794 | vptr_name, name, (char *) NULL); | |
c5aa993b | 2795 | break; |
c906108c | 2796 | |
c5aa993b | 2797 | case 'b': /* $vb -- a virtual bsomethingorother */ |
a737d952 | 2798 | name = TYPE_NAME (context); |
c5aa993b JM |
2799 | if (name == NULL) |
2800 | { | |
b98664d3 | 2801 | complaint (_("C++ abbreviated type name " |
3e43a32a | 2802 | "unknown at symtab pos %d"), |
23136709 | 2803 | symnum); |
c5aa993b JM |
2804 | name = "FOO"; |
2805 | } | |
48cb83fd JK |
2806 | fip->list->field.name = obconcat (&objfile->objfile_obstack, vb_name, |
2807 | name, (char *) NULL); | |
c5aa993b | 2808 | break; |
c906108c | 2809 | |
c5aa993b | 2810 | default: |
23136709 | 2811 | invalid_cpp_abbrev_complaint (*pp); |
48cb83fd JK |
2812 | fip->list->field.name = obconcat (&objfile->objfile_obstack, |
2813 | "INVALID_CPLUSPLUS_ABBREV", | |
2814 | (char *) NULL); | |
c5aa993b | 2815 | break; |
c906108c SS |
2816 | } |
2817 | ||
2818 | /* At this point, *pp points to the ':'. Skip it and read the | |
c378eb4e | 2819 | field type. */ |
c906108c SS |
2820 | |
2821 | p = ++(*pp); | |
2822 | if (p[-1] != ':') | |
2823 | { | |
23136709 | 2824 | invalid_cpp_abbrev_complaint (*pp); |
c906108c SS |
2825 | return 0; |
2826 | } | |
2827 | fip->list->field.type = read_type (pp, objfile); | |
2828 | if (**pp == ',') | |
c5aa993b | 2829 | (*pp)++; /* Skip the comma. */ |
c906108c SS |
2830 | else |
2831 | return 0; | |
2832 | ||
2833 | { | |
2834 | int nbits; | |
433759f7 | 2835 | |
f41f5e61 PA |
2836 | SET_FIELD_BITPOS (fip->list->field, |
2837 | read_huge_number (pp, ';', &nbits, 0)); | |
c906108c SS |
2838 | if (nbits != 0) |
2839 | return 0; | |
2840 | } | |
2841 | /* This field is unpacked. */ | |
2842 | FIELD_BITSIZE (fip->list->field) = 0; | |
2843 | fip->list->visibility = VISIBILITY_PRIVATE; | |
2844 | } | |
2845 | else | |
2846 | { | |
23136709 | 2847 | invalid_cpp_abbrev_complaint (*pp); |
c906108c | 2848 | /* We have no idea what syntax an unrecognized abbrev would have, so |
c5aa993b JM |
2849 | better return 0. If we returned 1, we would need to at least advance |
2850 | *pp to avoid an infinite loop. */ | |
c906108c SS |
2851 | return 0; |
2852 | } | |
2853 | return 1; | |
2854 | } | |
2855 | ||
2856 | static void | |
a121b7c1 | 2857 | read_one_struct_field (struct field_info *fip, const char **pp, const char *p, |
fba45db2 | 2858 | struct type *type, struct objfile *objfile) |
c906108c | 2859 | { |
5e2b427d UW |
2860 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
2861 | ||
224c3ddb SM |
2862 | fip->list->field.name |
2863 | = (const char *) obstack_copy0 (&objfile->objfile_obstack, *pp, p - *pp); | |
c906108c SS |
2864 | *pp = p + 1; |
2865 | ||
c378eb4e | 2866 | /* This means we have a visibility for a field coming. */ |
c906108c SS |
2867 | if (**pp == '/') |
2868 | { | |
2869 | (*pp)++; | |
c5aa993b | 2870 | fip->list->visibility = *(*pp)++; |
c906108c SS |
2871 | } |
2872 | else | |
2873 | { | |
2874 | /* normal dbx-style format, no explicit visibility */ | |
c5aa993b | 2875 | fip->list->visibility = VISIBILITY_PUBLIC; |
c906108c SS |
2876 | } |
2877 | ||
c5aa993b | 2878 | fip->list->field.type = read_type (pp, objfile); |
c906108c SS |
2879 | if (**pp == ':') |
2880 | { | |
2881 | p = ++(*pp); | |
2882 | #if 0 | |
c378eb4e | 2883 | /* Possible future hook for nested types. */ |
c906108c SS |
2884 | if (**pp == '!') |
2885 | { | |
c5aa993b | 2886 | fip->list->field.bitpos = (long) -2; /* nested type */ |
c906108c SS |
2887 | p = ++(*pp); |
2888 | } | |
c5aa993b JM |
2889 | else |
2890 | ...; | |
c906108c | 2891 | #endif |
c5aa993b | 2892 | while (*p != ';') |
c906108c SS |
2893 | { |
2894 | p++; | |
2895 | } | |
2896 | /* Static class member. */ | |
2897 | SET_FIELD_PHYSNAME (fip->list->field, savestring (*pp, p - *pp)); | |
2898 | *pp = p + 1; | |
2899 | return; | |
2900 | } | |
2901 | else if (**pp != ',') | |
2902 | { | |
2903 | /* Bad structure-type format. */ | |
23136709 | 2904 | stabs_general_complaint ("bad structure-type format"); |
c906108c SS |
2905 | return; |
2906 | } | |
2907 | ||
2908 | (*pp)++; /* Skip the comma. */ | |
2909 | ||
2910 | { | |
2911 | int nbits; | |
433759f7 | 2912 | |
f41f5e61 PA |
2913 | SET_FIELD_BITPOS (fip->list->field, |
2914 | read_huge_number (pp, ',', &nbits, 0)); | |
c906108c SS |
2915 | if (nbits != 0) |
2916 | { | |
23136709 | 2917 | stabs_general_complaint ("bad structure-type format"); |
c906108c SS |
2918 | return; |
2919 | } | |
94e10a22 | 2920 | FIELD_BITSIZE (fip->list->field) = read_huge_number (pp, ';', &nbits, 0); |
c906108c SS |
2921 | if (nbits != 0) |
2922 | { | |
23136709 | 2923 | stabs_general_complaint ("bad structure-type format"); |
c906108c SS |
2924 | return; |
2925 | } | |
2926 | } | |
2927 | ||
2928 | if (FIELD_BITPOS (fip->list->field) == 0 | |
2929 | && FIELD_BITSIZE (fip->list->field) == 0) | |
2930 | { | |
2931 | /* This can happen in two cases: (1) at least for gcc 2.4.5 or so, | |
c5aa993b JM |
2932 | it is a field which has been optimized out. The correct stab for |
2933 | this case is to use VISIBILITY_IGNORE, but that is a recent | |
2934 | invention. (2) It is a 0-size array. For example | |
e2e0b3e5 | 2935 | union { int num; char str[0]; } foo. Printing _("<no value>" for |
c5aa993b JM |
2936 | str in "p foo" is OK, since foo.str (and thus foo.str[3]) |
2937 | will continue to work, and a 0-size array as a whole doesn't | |
2938 | have any contents to print. | |
2939 | ||
2940 | I suspect this probably could also happen with gcc -gstabs (not | |
2941 | -gstabs+) for static fields, and perhaps other C++ extensions. | |
2942 | Hopefully few people use -gstabs with gdb, since it is intended | |
2943 | for dbx compatibility. */ | |
c906108c SS |
2944 | |
2945 | /* Ignore this field. */ | |
c5aa993b | 2946 | fip->list->visibility = VISIBILITY_IGNORE; |
c906108c SS |
2947 | } |
2948 | else | |
2949 | { | |
2950 | /* Detect an unpacked field and mark it as such. | |
c5aa993b JM |
2951 | dbx gives a bit size for all fields. |
2952 | Note that forward refs cannot be packed, | |
2953 | and treat enums as if they had the width of ints. */ | |
c906108c SS |
2954 | |
2955 | struct type *field_type = check_typedef (FIELD_TYPE (fip->list->field)); | |
2956 | ||
2957 | if (TYPE_CODE (field_type) != TYPE_CODE_INT | |
2958 | && TYPE_CODE (field_type) != TYPE_CODE_RANGE | |
2959 | && TYPE_CODE (field_type) != TYPE_CODE_BOOL | |
2960 | && TYPE_CODE (field_type) != TYPE_CODE_ENUM) | |
2961 | { | |
2962 | FIELD_BITSIZE (fip->list->field) = 0; | |
2963 | } | |
c5aa993b | 2964 | if ((FIELD_BITSIZE (fip->list->field) |
c906108c SS |
2965 | == TARGET_CHAR_BIT * TYPE_LENGTH (field_type) |
2966 | || (TYPE_CODE (field_type) == TYPE_CODE_ENUM | |
9a76efb6 | 2967 | && FIELD_BITSIZE (fip->list->field) |
5e2b427d | 2968 | == gdbarch_int_bit (gdbarch)) |
c5aa993b | 2969 | ) |
c906108c SS |
2970 | && |
2971 | FIELD_BITPOS (fip->list->field) % 8 == 0) | |
2972 | { | |
2973 | FIELD_BITSIZE (fip->list->field) = 0; | |
2974 | } | |
2975 | } | |
2976 | } | |
2977 | ||
2978 | ||
2979 | /* Read struct or class data fields. They have the form: | |
2980 | ||
c5aa993b | 2981 | NAME : [VISIBILITY] TYPENUM , BITPOS , BITSIZE ; |
c906108c SS |
2982 | |
2983 | At the end, we see a semicolon instead of a field. | |
2984 | ||
2985 | In C++, this may wind up being NAME:?TYPENUM:PHYSNAME; for | |
2986 | a static field. | |
2987 | ||
2988 | The optional VISIBILITY is one of: | |
2989 | ||
c5aa993b JM |
2990 | '/0' (VISIBILITY_PRIVATE) |
2991 | '/1' (VISIBILITY_PROTECTED) | |
2992 | '/2' (VISIBILITY_PUBLIC) | |
2993 | '/9' (VISIBILITY_IGNORE) | |
c906108c SS |
2994 | |
2995 | or nothing, for C style fields with public visibility. | |
2996 | ||
2997 | Returns 1 for success, 0 for failure. */ | |
2998 | ||
2999 | static int | |
a121b7c1 | 3000 | read_struct_fields (struct field_info *fip, const char **pp, struct type *type, |
fba45db2 | 3001 | struct objfile *objfile) |
c906108c | 3002 | { |
a121b7c1 | 3003 | const char *p; |
fe978cb0 | 3004 | struct nextfield *newobj; |
c906108c SS |
3005 | |
3006 | /* We better set p right now, in case there are no fields at all... */ | |
3007 | ||
3008 | p = *pp; | |
3009 | ||
3010 | /* Read each data member type until we find the terminating ';' at the end of | |
3011 | the data member list, or break for some other reason such as finding the | |
c378eb4e | 3012 | start of the member function list. */ |
fedbd091 | 3013 | /* Stab string for structure/union does not end with two ';' in |
c378eb4e | 3014 | SUN C compiler 5.3 i.e. F6U2, hence check for end of string. */ |
c906108c | 3015 | |
fedbd091 | 3016 | while (**pp != ';' && **pp != '\0') |
c906108c | 3017 | { |
c906108c SS |
3018 | STABS_CONTINUE (pp, objfile); |
3019 | /* Get space to record the next field's data. */ | |
8d749320 | 3020 | newobj = XCNEW (struct nextfield); |
fe978cb0 | 3021 | make_cleanup (xfree, newobj); |
8d749320 | 3022 | |
fe978cb0 PA |
3023 | newobj->next = fip->list; |
3024 | fip->list = newobj; | |
c906108c SS |
3025 | |
3026 | /* Get the field name. */ | |
3027 | p = *pp; | |
3028 | ||
3029 | /* If is starts with CPLUS_MARKER it is a special abbreviation, | |
c5aa993b JM |
3030 | unless the CPLUS_MARKER is followed by an underscore, in |
3031 | which case it is just the name of an anonymous type, which we | |
3032 | should handle like any other type name. */ | |
c906108c SS |
3033 | |
3034 | if (is_cplus_marker (p[0]) && p[1] != '_') | |
3035 | { | |
3036 | if (!read_cpp_abbrev (fip, pp, type, objfile)) | |
3037 | return 0; | |
3038 | continue; | |
3039 | } | |
3040 | ||
3041 | /* Look for the ':' that separates the field name from the field | |
c5aa993b JM |
3042 | values. Data members are delimited by a single ':', while member |
3043 | functions are delimited by a pair of ':'s. When we hit the member | |
c378eb4e | 3044 | functions (if any), terminate scan loop and return. */ |
c906108c | 3045 | |
c5aa993b | 3046 | while (*p != ':' && *p != '\0') |
c906108c SS |
3047 | { |
3048 | p++; | |
3049 | } | |
3050 | if (*p == '\0') | |
3051 | return 0; | |
3052 | ||
3053 | /* Check to see if we have hit the member functions yet. */ | |
3054 | if (p[1] == ':') | |
3055 | { | |
3056 | break; | |
3057 | } | |
3058 | read_one_struct_field (fip, pp, p, type, objfile); | |
3059 | } | |
3060 | if (p[0] == ':' && p[1] == ':') | |
3061 | { | |
1b831c93 AC |
3062 | /* (the deleted) chill the list of fields: the last entry (at |
3063 | the head) is a partially constructed entry which we now | |
c378eb4e | 3064 | scrub. */ |
c5aa993b | 3065 | fip->list = fip->list->next; |
c906108c SS |
3066 | } |
3067 | return 1; | |
3068 | } | |
9846de1b | 3069 | /* *INDENT-OFF* */ |
c906108c SS |
3070 | /* The stabs for C++ derived classes contain baseclass information which |
3071 | is marked by a '!' character after the total size. This function is | |
3072 | called when we encounter the baseclass marker, and slurps up all the | |
3073 | baseclass information. | |
3074 | ||
3075 | Immediately following the '!' marker is the number of base classes that | |
3076 | the class is derived from, followed by information for each base class. | |
3077 | For each base class, there are two visibility specifiers, a bit offset | |
3078 | to the base class information within the derived class, a reference to | |
3079 | the type for the base class, and a terminating semicolon. | |
3080 | ||
3081 | A typical example, with two base classes, would be "!2,020,19;0264,21;". | |
3082 | ^^ ^ ^ ^ ^ ^ ^ | |
3083 | Baseclass information marker __________________|| | | | | | | | |
3084 | Number of baseclasses __________________________| | | | | | | | |
3085 | Visibility specifiers (2) ________________________| | | | | | | |
3086 | Offset in bits from start of class _________________| | | | | | |
3087 | Type number for base class ___________________________| | | | | |
3088 | Visibility specifiers (2) _______________________________| | | | |
3089 | Offset in bits from start of class ________________________| | | |
3090 | Type number of base class ____________________________________| | |
3091 | ||
3092 | Return 1 for success, 0 for (error-type-inducing) failure. */ | |
9846de1b | 3093 | /* *INDENT-ON* */ |
c906108c | 3094 | |
c5aa993b JM |
3095 | |
3096 | ||
c906108c | 3097 | static int |
a121b7c1 | 3098 | read_baseclasses (struct field_info *fip, const char **pp, struct type *type, |
fba45db2 | 3099 | struct objfile *objfile) |
c906108c SS |
3100 | { |
3101 | int i; | |
fe978cb0 | 3102 | struct nextfield *newobj; |
c906108c SS |
3103 | |
3104 | if (**pp != '!') | |
3105 | { | |
3106 | return 1; | |
3107 | } | |
3108 | else | |
3109 | { | |
c378eb4e | 3110 | /* Skip the '!' baseclass information marker. */ |
c906108c SS |
3111 | (*pp)++; |
3112 | } | |
3113 | ||
3114 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
3115 | { | |
3116 | int nbits; | |
433759f7 | 3117 | |
94e10a22 | 3118 | TYPE_N_BASECLASSES (type) = read_huge_number (pp, ',', &nbits, 0); |
c906108c SS |
3119 | if (nbits != 0) |
3120 | return 0; | |
3121 | } | |
3122 | ||
3123 | #if 0 | |
3124 | /* Some stupid compilers have trouble with the following, so break | |
3125 | it up into simpler expressions. */ | |
3126 | TYPE_FIELD_VIRTUAL_BITS (type) = (B_TYPE *) | |
3127 | TYPE_ALLOC (type, B_BYTES (TYPE_N_BASECLASSES (type))); | |
3128 | #else | |
3129 | { | |
3130 | int num_bytes = B_BYTES (TYPE_N_BASECLASSES (type)); | |
3131 | char *pointer; | |
3132 | ||
3133 | pointer = (char *) TYPE_ALLOC (type, num_bytes); | |
3134 | TYPE_FIELD_VIRTUAL_BITS (type) = (B_TYPE *) pointer; | |
3135 | } | |
3136 | #endif /* 0 */ | |
3137 | ||
3138 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), TYPE_N_BASECLASSES (type)); | |
3139 | ||
3140 | for (i = 0; i < TYPE_N_BASECLASSES (type); i++) | |
3141 | { | |
8d749320 | 3142 | newobj = XCNEW (struct nextfield); |
fe978cb0 | 3143 | make_cleanup (xfree, newobj); |
8d749320 | 3144 | |
fe978cb0 PA |
3145 | newobj->next = fip->list; |
3146 | fip->list = newobj; | |
3147 | FIELD_BITSIZE (newobj->field) = 0; /* This should be an unpacked | |
c378eb4e | 3148 | field! */ |
c906108c SS |
3149 | |
3150 | STABS_CONTINUE (pp, objfile); | |
3151 | switch (**pp) | |
3152 | { | |
c5aa993b | 3153 | case '0': |
c378eb4e | 3154 | /* Nothing to do. */ |
c5aa993b JM |
3155 | break; |
3156 | case '1': | |
3157 | SET_TYPE_FIELD_VIRTUAL (type, i); | |
3158 | break; | |
3159 | default: | |
3160 | /* Unknown character. Complain and treat it as non-virtual. */ | |
3161 | { | |
b98664d3 | 3162 | complaint (_("Unknown virtual character `%c' for baseclass"), |
3e43a32a | 3163 | **pp); |
c5aa993b | 3164 | } |
c906108c SS |
3165 | } |
3166 | ++(*pp); | |
3167 | ||
fe978cb0 PA |
3168 | newobj->visibility = *(*pp)++; |
3169 | switch (newobj->visibility) | |
c906108c | 3170 | { |
c5aa993b JM |
3171 | case VISIBILITY_PRIVATE: |
3172 | case VISIBILITY_PROTECTED: | |
3173 | case VISIBILITY_PUBLIC: | |
3174 | break; | |
3175 | default: | |
3176 | /* Bad visibility format. Complain and treat it as | |
3177 | public. */ | |
3178 | { | |
b98664d3 | 3179 | complaint (_("Unknown visibility `%c' for baseclass"), |
fe978cb0 PA |
3180 | newobj->visibility); |
3181 | newobj->visibility = VISIBILITY_PUBLIC; | |
c5aa993b | 3182 | } |
c906108c SS |
3183 | } |
3184 | ||
3185 | { | |
3186 | int nbits; | |
c5aa993b | 3187 | |
c906108c SS |
3188 | /* The remaining value is the bit offset of the portion of the object |
3189 | corresponding to this baseclass. Always zero in the absence of | |
3190 | multiple inheritance. */ | |
3191 | ||
fe978cb0 | 3192 | SET_FIELD_BITPOS (newobj->field, read_huge_number (pp, ',', &nbits, 0)); |
c906108c SS |
3193 | if (nbits != 0) |
3194 | return 0; | |
3195 | } | |
3196 | ||
3197 | /* The last piece of baseclass information is the type of the | |
c5aa993b | 3198 | base class. Read it, and remember it's type name as this |
c378eb4e | 3199 | field's name. */ |
c906108c | 3200 | |
fe978cb0 | 3201 | newobj->field.type = read_type (pp, objfile); |
a737d952 | 3202 | newobj->field.name = TYPE_NAME (newobj->field.type); |
c906108c | 3203 | |
c378eb4e | 3204 | /* Skip trailing ';' and bump count of number of fields seen. */ |
c906108c SS |
3205 | if (**pp == ';') |
3206 | (*pp)++; | |
3207 | else | |
3208 | return 0; | |
3209 | } | |
3210 | return 1; | |
3211 | } | |
3212 | ||
3213 | /* The tail end of stabs for C++ classes that contain a virtual function | |
3214 | pointer contains a tilde, a %, and a type number. | |
3215 | The type number refers to the base class (possibly this class itself) which | |
3216 | contains the vtable pointer for the current class. | |
3217 | ||
3218 | This function is called when we have parsed all the method declarations, | |
3219 | so we can look for the vptr base class info. */ | |
3220 | ||
3221 | static int | |
a121b7c1 | 3222 | read_tilde_fields (struct field_info *fip, const char **pp, struct type *type, |
fba45db2 | 3223 | struct objfile *objfile) |
c906108c | 3224 | { |
a121b7c1 | 3225 | const char *p; |
c906108c SS |
3226 | |
3227 | STABS_CONTINUE (pp, objfile); | |
3228 | ||
c378eb4e | 3229 | /* If we are positioned at a ';', then skip it. */ |
c906108c SS |
3230 | if (**pp == ';') |
3231 | { | |
3232 | (*pp)++; | |
3233 | } | |
3234 | ||
3235 | if (**pp == '~') | |
3236 | { | |
3237 | (*pp)++; | |
3238 | ||
3239 | if (**pp == '=' || **pp == '+' || **pp == '-') | |
3240 | { | |
3241 | /* Obsolete flags that used to indicate the presence | |
c378eb4e | 3242 | of constructors and/or destructors. */ |
c906108c SS |
3243 | (*pp)++; |
3244 | } | |
3245 | ||
3246 | /* Read either a '%' or the final ';'. */ | |
3247 | if (*(*pp)++ == '%') | |
3248 | { | |
3249 | /* The next number is the type number of the base class | |
3250 | (possibly our own class) which supplies the vtable for | |
3251 | this class. Parse it out, and search that class to find | |
3252 | its vtable pointer, and install those into TYPE_VPTR_BASETYPE | |
3253 | and TYPE_VPTR_FIELDNO. */ | |
3254 | ||
3255 | struct type *t; | |
3256 | int i; | |
3257 | ||
3258 | t = read_type (pp, objfile); | |
3259 | p = (*pp)++; | |
3260 | while (*p != '\0' && *p != ';') | |
3261 | { | |
3262 | p++; | |
3263 | } | |
3264 | if (*p == '\0') | |
3265 | { | |
3266 | /* Premature end of symbol. */ | |
3267 | return 0; | |
3268 | } | |
c5aa993b | 3269 | |
ae6ae975 | 3270 | set_type_vptr_basetype (type, t); |
c378eb4e | 3271 | if (type == t) /* Our own class provides vtbl ptr. */ |
c906108c SS |
3272 | { |
3273 | for (i = TYPE_NFIELDS (t) - 1; | |
3274 | i >= TYPE_N_BASECLASSES (t); | |
3275 | --i) | |
3276 | { | |
0d5cff50 | 3277 | const char *name = TYPE_FIELD_NAME (t, i); |
433759f7 | 3278 | |
8343f86c | 3279 | if (!strncmp (name, vptr_name, sizeof (vptr_name) - 2) |
74451869 | 3280 | && is_cplus_marker (name[sizeof (vptr_name) - 2])) |
c906108c | 3281 | { |
ae6ae975 | 3282 | set_type_vptr_fieldno (type, i); |
c906108c SS |
3283 | goto gotit; |
3284 | } | |
3285 | } | |
3286 | /* Virtual function table field not found. */ | |
b98664d3 | 3287 | complaint (_("virtual function table pointer " |
3e43a32a | 3288 | "not found when defining class `%s'"), |
23136709 | 3289 | TYPE_NAME (type)); |
c906108c SS |
3290 | return 0; |
3291 | } | |
3292 | else | |
3293 | { | |
ae6ae975 | 3294 | set_type_vptr_fieldno (type, TYPE_VPTR_FIELDNO (t)); |
c906108c SS |
3295 | } |
3296 | ||
c5aa993b | 3297 | gotit: |
c906108c SS |
3298 | *pp = p + 1; |
3299 | } | |
3300 | } | |
3301 | return 1; | |
3302 | } | |
3303 | ||
3304 | static int | |
aa1ee363 | 3305 | attach_fn_fields_to_type (struct field_info *fip, struct type *type) |
c906108c | 3306 | { |
52f0bd74 | 3307 | int n; |
c906108c SS |
3308 | |
3309 | for (n = TYPE_NFN_FIELDS (type); | |
c5aa993b JM |
3310 | fip->fnlist != NULL; |
3311 | fip->fnlist = fip->fnlist->next) | |
c906108c | 3312 | { |
c378eb4e | 3313 | --n; /* Circumvent Sun3 compiler bug. */ |
c5aa993b | 3314 | TYPE_FN_FIELDLISTS (type)[n] = fip->fnlist->fn_fieldlist; |
c906108c SS |
3315 | } |
3316 | return 1; | |
3317 | } | |
3318 | ||
c906108c SS |
3319 | /* Create the vector of fields, and record how big it is. |
3320 | We need this info to record proper virtual function table information | |
3321 | for this class's virtual functions. */ | |
3322 | ||
3323 | static int | |
aa1ee363 | 3324 | attach_fields_to_type (struct field_info *fip, struct type *type, |
fba45db2 | 3325 | struct objfile *objfile) |
c906108c | 3326 | { |
52f0bd74 AC |
3327 | int nfields = 0; |
3328 | int non_public_fields = 0; | |
3329 | struct nextfield *scan; | |
c906108c SS |
3330 | |
3331 | /* Count up the number of fields that we have, as well as taking note of | |
3332 | whether or not there are any non-public fields, which requires us to | |
3333 | allocate and build the private_field_bits and protected_field_bits | |
c378eb4e | 3334 | bitfields. */ |
c906108c | 3335 | |
c5aa993b | 3336 | for (scan = fip->list; scan != NULL; scan = scan->next) |
c906108c SS |
3337 | { |
3338 | nfields++; | |
c5aa993b | 3339 | if (scan->visibility != VISIBILITY_PUBLIC) |
c906108c SS |
3340 | { |
3341 | non_public_fields++; | |
3342 | } | |
3343 | } | |
3344 | ||
3345 | /* Now we know how many fields there are, and whether or not there are any | |
3346 | non-public fields. Record the field count, allocate space for the | |
c378eb4e | 3347 | array of fields, and create blank visibility bitfields if necessary. */ |
c906108c SS |
3348 | |
3349 | TYPE_NFIELDS (type) = nfields; | |
3350 | TYPE_FIELDS (type) = (struct field *) | |
3351 | TYPE_ALLOC (type, sizeof (struct field) * nfields); | |
3352 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields); | |
3353 | ||
3354 | if (non_public_fields) | |
3355 | { | |
3356 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
3357 | ||
3358 | TYPE_FIELD_PRIVATE_BITS (type) = | |
3359 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
3360 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
3361 | ||
3362 | TYPE_FIELD_PROTECTED_BITS (type) = | |
3363 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
3364 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
3365 | ||
3366 | TYPE_FIELD_IGNORE_BITS (type) = | |
3367 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
3368 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
3369 | } | |
3370 | ||
c378eb4e MS |
3371 | /* Copy the saved-up fields into the field vector. Start from the |
3372 | head of the list, adding to the tail of the field array, so that | |
3373 | they end up in the same order in the array in which they were | |
3374 | added to the list. */ | |
c906108c SS |
3375 | |
3376 | while (nfields-- > 0) | |
3377 | { | |
c5aa993b JM |
3378 | TYPE_FIELD (type, nfields) = fip->list->field; |
3379 | switch (fip->list->visibility) | |
c906108c | 3380 | { |
c5aa993b JM |
3381 | case VISIBILITY_PRIVATE: |
3382 | SET_TYPE_FIELD_PRIVATE (type, nfields); | |
3383 | break; | |
c906108c | 3384 | |
c5aa993b JM |
3385 | case VISIBILITY_PROTECTED: |
3386 | SET_TYPE_FIELD_PROTECTED (type, nfields); | |
3387 | break; | |
c906108c | 3388 | |
c5aa993b JM |
3389 | case VISIBILITY_IGNORE: |
3390 | SET_TYPE_FIELD_IGNORE (type, nfields); | |
3391 | break; | |
c906108c | 3392 | |
c5aa993b JM |
3393 | case VISIBILITY_PUBLIC: |
3394 | break; | |
c906108c | 3395 | |
c5aa993b JM |
3396 | default: |
3397 | /* Unknown visibility. Complain and treat it as public. */ | |
3398 | { | |
b98664d3 | 3399 | complaint (_("Unknown visibility `%c' for field"), |
23136709 | 3400 | fip->list->visibility); |
c5aa993b JM |
3401 | } |
3402 | break; | |
c906108c | 3403 | } |
c5aa993b | 3404 | fip->list = fip->list->next; |
c906108c SS |
3405 | } |
3406 | return 1; | |
3407 | } | |
3408 | ||
2ae1c2d2 | 3409 | |
2ae1c2d2 JB |
3410 | /* Complain that the compiler has emitted more than one definition for the |
3411 | structure type TYPE. */ | |
3412 | static void | |
3413 | complain_about_struct_wipeout (struct type *type) | |
3414 | { | |
0d5cff50 DE |
3415 | const char *name = ""; |
3416 | const char *kind = ""; | |
2ae1c2d2 | 3417 | |
e86ca25f | 3418 | if (TYPE_NAME (type)) |
2ae1c2d2 | 3419 | { |
e86ca25f | 3420 | name = TYPE_NAME (type); |
2ae1c2d2 JB |
3421 | switch (TYPE_CODE (type)) |
3422 | { | |
3423 | case TYPE_CODE_STRUCT: kind = "struct "; break; | |
3424 | case TYPE_CODE_UNION: kind = "union "; break; | |
3425 | case TYPE_CODE_ENUM: kind = "enum "; break; | |
3426 | default: kind = ""; | |
3427 | } | |
3428 | } | |
2ae1c2d2 JB |
3429 | else |
3430 | { | |
3431 | name = "<unknown>"; | |
3432 | kind = ""; | |
3433 | } | |
3434 | ||
b98664d3 | 3435 | complaint (_("struct/union type gets multiply defined: %s%s"), kind, name); |
2ae1c2d2 JB |
3436 | } |
3437 | ||
621791b8 PM |
3438 | /* Set the length for all variants of a same main_type, which are |
3439 | connected in the closed chain. | |
3440 | ||
3441 | This is something that needs to be done when a type is defined *after* | |
3442 | some cross references to this type have already been read. Consider | |
3443 | for instance the following scenario where we have the following two | |
3444 | stabs entries: | |
3445 | ||
3446 | .stabs "t:p(0,21)=*(0,22)=k(0,23)=xsdummy:",160,0,28,-24 | |
3447 | .stabs "dummy:T(0,23)=s16x:(0,1),0,3[...]" | |
3448 | ||
3449 | A stubbed version of type dummy is created while processing the first | |
3450 | stabs entry. The length of that type is initially set to zero, since | |
3451 | it is unknown at this point. Also, a "constant" variation of type | |
3452 | "dummy" is created as well (this is the "(0,22)=k(0,23)" section of | |
3453 | the stabs line). | |
3454 | ||
3455 | The second stabs entry allows us to replace the stubbed definition | |
3456 | with the real definition. However, we still need to adjust the length | |
3457 | of the "constant" variation of that type, as its length was left | |
3458 | untouched during the main type replacement... */ | |
3459 | ||
3460 | static void | |
9e69f3b6 | 3461 | set_length_in_type_chain (struct type *type) |
621791b8 PM |
3462 | { |
3463 | struct type *ntype = TYPE_CHAIN (type); | |
3464 | ||
3465 | while (ntype != type) | |
3466 | { | |
3467 | if (TYPE_LENGTH(ntype) == 0) | |
3468 | TYPE_LENGTH (ntype) = TYPE_LENGTH (type); | |
3469 | else | |
3470 | complain_about_struct_wipeout (ntype); | |
3471 | ntype = TYPE_CHAIN (ntype); | |
3472 | } | |
3473 | } | |
2ae1c2d2 | 3474 | |
c906108c SS |
3475 | /* Read the description of a structure (or union type) and return an object |
3476 | describing the type. | |
3477 | ||
3478 | PP points to a character pointer that points to the next unconsumed token | |
b021a221 | 3479 | in the stabs string. For example, given stabs "A:T4=s4a:1,0,32;;", |
c906108c SS |
3480 | *PP will point to "4a:1,0,32;;". |
3481 | ||
3482 | TYPE points to an incomplete type that needs to be filled in. | |
3483 | ||
3484 | OBJFILE points to the current objfile from which the stabs information is | |
3485 | being read. (Note that it is redundant in that TYPE also contains a pointer | |
3486 | to this same objfile, so it might be a good idea to eliminate it. FIXME). | |
c5aa993b | 3487 | */ |
c906108c SS |
3488 | |
3489 | static struct type * | |
a121b7c1 | 3490 | read_struct_type (const char **pp, struct type *type, enum type_code type_code, |
2ae1c2d2 | 3491 | struct objfile *objfile) |
c906108c SS |
3492 | { |
3493 | struct cleanup *back_to; | |
3494 | struct field_info fi; | |
3495 | ||
3496 | fi.list = NULL; | |
3497 | fi.fnlist = NULL; | |
3498 | ||
2ae1c2d2 JB |
3499 | /* When describing struct/union/class types in stabs, G++ always drops |
3500 | all qualifications from the name. So if you've got: | |
3501 | struct A { ... struct B { ... }; ... }; | |
3502 | then G++ will emit stabs for `struct A::B' that call it simply | |
3503 | `struct B'. Obviously, if you've got a real top-level definition for | |
3504 | `struct B', or other nested definitions, this is going to cause | |
3505 | problems. | |
3506 | ||
3507 | Obviously, GDB can't fix this by itself, but it can at least avoid | |
3508 | scribbling on existing structure type objects when new definitions | |
3509 | appear. */ | |
3510 | if (! (TYPE_CODE (type) == TYPE_CODE_UNDEF | |
3511 | || TYPE_STUB (type))) | |
3512 | { | |
3513 | complain_about_struct_wipeout (type); | |
3514 | ||
3515 | /* It's probably best to return the type unchanged. */ | |
3516 | return type; | |
3517 | } | |
3518 | ||
c906108c SS |
3519 | back_to = make_cleanup (null_cleanup, 0); |
3520 | ||
3521 | INIT_CPLUS_SPECIFIC (type); | |
2ae1c2d2 | 3522 | TYPE_CODE (type) = type_code; |
876cecd0 | 3523 | TYPE_STUB (type) = 0; |
c906108c SS |
3524 | |
3525 | /* First comes the total size in bytes. */ | |
3526 | ||
3527 | { | |
3528 | int nbits; | |
433759f7 | 3529 | |
94e10a22 | 3530 | TYPE_LENGTH (type) = read_huge_number (pp, 0, &nbits, 0); |
c906108c | 3531 | if (nbits != 0) |
73b8d9da TT |
3532 | { |
3533 | do_cleanups (back_to); | |
3534 | return error_type (pp, objfile); | |
3535 | } | |
621791b8 | 3536 | set_length_in_type_chain (type); |
c906108c SS |
3537 | } |
3538 | ||
3539 | /* Now read the baseclasses, if any, read the regular C struct or C++ | |
3540 | class member fields, attach the fields to the type, read the C++ | |
3541 | member functions, attach them to the type, and then read any tilde | |
3e43a32a | 3542 | field (baseclass specifier for the class holding the main vtable). */ |
c906108c SS |
3543 | |
3544 | if (!read_baseclasses (&fi, pp, type, objfile) | |
3545 | || !read_struct_fields (&fi, pp, type, objfile) | |
3546 | || !attach_fields_to_type (&fi, type, objfile) | |
3547 | || !read_member_functions (&fi, pp, type, objfile) | |
3548 | || !attach_fn_fields_to_type (&fi, type) | |
3549 | || !read_tilde_fields (&fi, pp, type, objfile)) | |
3550 | { | |
3551 | type = error_type (pp, objfile); | |
3552 | } | |
3553 | ||
3554 | do_cleanups (back_to); | |
3555 | return (type); | |
3556 | } | |
3557 | ||
3558 | /* Read a definition of an array type, | |
3559 | and create and return a suitable type object. | |
3560 | Also creates a range type which represents the bounds of that | |
3561 | array. */ | |
3562 | ||
3563 | static struct type * | |
a121b7c1 | 3564 | read_array_type (const char **pp, struct type *type, |
fba45db2 | 3565 | struct objfile *objfile) |
c906108c SS |
3566 | { |
3567 | struct type *index_type, *element_type, *range_type; | |
3568 | int lower, upper; | |
3569 | int adjustable = 0; | |
3570 | int nbits; | |
3571 | ||
3572 | /* Format of an array type: | |
3573 | "ar<index type>;lower;upper;<array_contents_type>". | |
3574 | OS9000: "arlower,upper;<array_contents_type>". | |
3575 | ||
3576 | Fortran adjustable arrays use Adigits or Tdigits for lower or upper; | |
3577 | for these, produce a type like float[][]. */ | |
3578 | ||
c906108c SS |
3579 | { |
3580 | index_type = read_type (pp, objfile); | |
3581 | if (**pp != ';') | |
3582 | /* Improper format of array type decl. */ | |
3583 | return error_type (pp, objfile); | |
3584 | ++*pp; | |
3585 | } | |
3586 | ||
3587 | if (!(**pp >= '0' && **pp <= '9') && **pp != '-') | |
3588 | { | |
3589 | (*pp)++; | |
3590 | adjustable = 1; | |
3591 | } | |
94e10a22 | 3592 | lower = read_huge_number (pp, ';', &nbits, 0); |
cdecafbe | 3593 | |
c906108c SS |
3594 | if (nbits != 0) |
3595 | return error_type (pp, objfile); | |
3596 | ||
3597 | if (!(**pp >= '0' && **pp <= '9') && **pp != '-') | |
3598 | { | |
3599 | (*pp)++; | |
3600 | adjustable = 1; | |
3601 | } | |
94e10a22 | 3602 | upper = read_huge_number (pp, ';', &nbits, 0); |
c906108c SS |
3603 | if (nbits != 0) |
3604 | return error_type (pp, objfile); | |
c5aa993b | 3605 | |
c906108c SS |
3606 | element_type = read_type (pp, objfile); |
3607 | ||
3608 | if (adjustable) | |
3609 | { | |
3610 | lower = 0; | |
3611 | upper = -1; | |
3612 | } | |
3613 | ||
3614 | range_type = | |
0c9c3474 | 3615 | create_static_range_type ((struct type *) NULL, index_type, lower, upper); |
c906108c SS |
3616 | type = create_array_type (type, element_type, range_type); |
3617 | ||
3618 | return type; | |
3619 | } | |
3620 | ||
3621 | ||
3622 | /* Read a definition of an enumeration type, | |
3623 | and create and return a suitable type object. | |
3624 | Also defines the symbols that represent the values of the type. */ | |
3625 | ||
3626 | static struct type * | |
a121b7c1 | 3627 | read_enum_type (const char **pp, struct type *type, |
fba45db2 | 3628 | struct objfile *objfile) |
c906108c | 3629 | { |
5e2b427d | 3630 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
a121b7c1 | 3631 | const char *p; |
c906108c | 3632 | char *name; |
52f0bd74 AC |
3633 | long n; |
3634 | struct symbol *sym; | |
c906108c SS |
3635 | int nsyms = 0; |
3636 | struct pending **symlist; | |
3637 | struct pending *osyms, *syms; | |
3638 | int o_nsyms; | |
3639 | int nbits; | |
3640 | int unsigned_enum = 1; | |
3641 | ||
3642 | #if 0 | |
3643 | /* FIXME! The stabs produced by Sun CC merrily define things that ought | |
3644 | to be file-scope, between N_FN entries, using N_LSYM. What's a mother | |
3645 | to do? For now, force all enum values to file scope. */ | |
3646 | if (within_function) | |
e148f09d | 3647 | symlist = get_local_symbols (); |
c906108c SS |
3648 | else |
3649 | #endif | |
e148f09d | 3650 | symlist = get_file_symbols (); |
c906108c SS |
3651 | osyms = *symlist; |
3652 | o_nsyms = osyms ? osyms->nsyms : 0; | |
3653 | ||
c906108c SS |
3654 | /* The aix4 compiler emits an extra field before the enum members; |
3655 | my guess is it's a type of some sort. Just ignore it. */ | |
3656 | if (**pp == '-') | |
3657 | { | |
3658 | /* Skip over the type. */ | |
3659 | while (**pp != ':') | |
c5aa993b | 3660 | (*pp)++; |
c906108c SS |
3661 | |
3662 | /* Skip over the colon. */ | |
3663 | (*pp)++; | |
3664 | } | |
3665 | ||
3666 | /* Read the value-names and their values. | |
3667 | The input syntax is NAME:VALUE,NAME:VALUE, and so on. | |
3668 | A semicolon or comma instead of a NAME means the end. */ | |
3669 | while (**pp && **pp != ';' && **pp != ',') | |
3670 | { | |
3671 | STABS_CONTINUE (pp, objfile); | |
3672 | p = *pp; | |
c5aa993b JM |
3673 | while (*p != ':') |
3674 | p++; | |
224c3ddb | 3675 | name = (char *) obstack_copy0 (&objfile->objfile_obstack, *pp, p - *pp); |
c906108c | 3676 | *pp = p + 1; |
94e10a22 | 3677 | n = read_huge_number (pp, ',', &nbits, 0); |
c906108c SS |
3678 | if (nbits != 0) |
3679 | return error_type (pp, objfile); | |
3680 | ||
e623cf5d | 3681 | sym = allocate_symbol (objfile); |
3567439c | 3682 | SYMBOL_SET_LINKAGE_NAME (sym, name); |
3c65e5b3 | 3683 | SYMBOL_SET_LANGUAGE (sym, get_current_subfile ()->language, |
f85f34ed | 3684 | &objfile->objfile_obstack); |
f1e6e072 | 3685 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
176620f1 | 3686 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
3687 | SYMBOL_VALUE (sym) = n; |
3688 | if (n < 0) | |
3689 | unsigned_enum = 0; | |
3690 | add_symbol_to_list (sym, symlist); | |
3691 | nsyms++; | |
3692 | } | |
3693 | ||
3694 | if (**pp == ';') | |
3695 | (*pp)++; /* Skip the semicolon. */ | |
3696 | ||
3697 | /* Now fill in the fields of the type-structure. */ | |
3698 | ||
5e2b427d | 3699 | TYPE_LENGTH (type) = gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT; |
621791b8 | 3700 | set_length_in_type_chain (type); |
c906108c | 3701 | TYPE_CODE (type) = TYPE_CODE_ENUM; |
876cecd0 | 3702 | TYPE_STUB (type) = 0; |
c906108c | 3703 | if (unsigned_enum) |
876cecd0 | 3704 | TYPE_UNSIGNED (type) = 1; |
c906108c SS |
3705 | TYPE_NFIELDS (type) = nsyms; |
3706 | TYPE_FIELDS (type) = (struct field *) | |
3707 | TYPE_ALLOC (type, sizeof (struct field) * nsyms); | |
3708 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nsyms); | |
3709 | ||
3710 | /* Find the symbols for the values and put them into the type. | |
3711 | The symbols can be found in the symlist that we put them on | |
3712 | to cause them to be defined. osyms contains the old value | |
3713 | of that symlist; everything up to there was defined by us. */ | |
3714 | /* Note that we preserve the order of the enum constants, so | |
3715 | that in something like "enum {FOO, LAST_THING=FOO}" we print | |
3716 | FOO, not LAST_THING. */ | |
3717 | ||
3718 | for (syms = *symlist, n = nsyms - 1; syms; syms = syms->next) | |
3719 | { | |
3720 | int last = syms == osyms ? o_nsyms : 0; | |
3721 | int j = syms->nsyms; | |
433759f7 | 3722 | |
c906108c SS |
3723 | for (; --j >= last; --n) |
3724 | { | |
3725 | struct symbol *xsym = syms->symbol[j]; | |
433759f7 | 3726 | |
c906108c | 3727 | SYMBOL_TYPE (xsym) = type; |
3567439c | 3728 | TYPE_FIELD_NAME (type, n) = SYMBOL_LINKAGE_NAME (xsym); |
14e75d8e | 3729 | SET_FIELD_ENUMVAL (TYPE_FIELD (type, n), SYMBOL_VALUE (xsym)); |
c906108c SS |
3730 | TYPE_FIELD_BITSIZE (type, n) = 0; |
3731 | } | |
3732 | if (syms == osyms) | |
3733 | break; | |
3734 | } | |
3735 | ||
3736 | return type; | |
3737 | } | |
3738 | ||
3739 | /* Sun's ACC uses a somewhat saner method for specifying the builtin | |
3740 | typedefs in every file (for int, long, etc): | |
3741 | ||
c5aa993b JM |
3742 | type = b <signed> <width> <format type>; <offset>; <nbits> |
3743 | signed = u or s. | |
3744 | optional format type = c or b for char or boolean. | |
3745 | offset = offset from high order bit to start bit of type. | |
3746 | width is # bytes in object of this type, nbits is # bits in type. | |
c906108c SS |
3747 | |
3748 | The width/offset stuff appears to be for small objects stored in | |
3749 | larger ones (e.g. `shorts' in `int' registers). We ignore it for now, | |
3750 | FIXME. */ | |
3751 | ||
3752 | static struct type * | |
a121b7c1 | 3753 | read_sun_builtin_type (const char **pp, int typenums[2], struct objfile *objfile) |
c906108c SS |
3754 | { |
3755 | int type_bits; | |
3756 | int nbits; | |
19f392bc UW |
3757 | int unsigned_type; |
3758 | int boolean_type = 0; | |
c906108c SS |
3759 | |
3760 | switch (**pp) | |
3761 | { | |
c5aa993b | 3762 | case 's': |
19f392bc | 3763 | unsigned_type = 0; |
c5aa993b JM |
3764 | break; |
3765 | case 'u': | |
19f392bc | 3766 | unsigned_type = 1; |
c5aa993b JM |
3767 | break; |
3768 | default: | |
3769 | return error_type (pp, objfile); | |
c906108c SS |
3770 | } |
3771 | (*pp)++; | |
3772 | ||
3773 | /* For some odd reason, all forms of char put a c here. This is strange | |
3774 | because no other type has this honor. We can safely ignore this because | |
3775 | we actually determine 'char'acterness by the number of bits specified in | |
3776 | the descriptor. | |
3777 | Boolean forms, e.g Fortran logical*X, put a b here. */ | |
3778 | ||
3779 | if (**pp == 'c') | |
3780 | (*pp)++; | |
3781 | else if (**pp == 'b') | |
3782 | { | |
19f392bc | 3783 | boolean_type = 1; |
c906108c SS |
3784 | (*pp)++; |
3785 | } | |
3786 | ||
3787 | /* The first number appears to be the number of bytes occupied | |
3788 | by this type, except that unsigned short is 4 instead of 2. | |
3789 | Since this information is redundant with the third number, | |
3790 | we will ignore it. */ | |
94e10a22 | 3791 | read_huge_number (pp, ';', &nbits, 0); |
c906108c SS |
3792 | if (nbits != 0) |
3793 | return error_type (pp, objfile); | |
3794 | ||
c378eb4e | 3795 | /* The second number is always 0, so ignore it too. */ |
94e10a22 | 3796 | read_huge_number (pp, ';', &nbits, 0); |
c906108c SS |
3797 | if (nbits != 0) |
3798 | return error_type (pp, objfile); | |
3799 | ||
c378eb4e | 3800 | /* The third number is the number of bits for this type. */ |
94e10a22 | 3801 | type_bits = read_huge_number (pp, 0, &nbits, 0); |
c906108c SS |
3802 | if (nbits != 0) |
3803 | return error_type (pp, objfile); | |
3804 | /* The type *should* end with a semicolon. If it are embedded | |
3805 | in a larger type the semicolon may be the only way to know where | |
3806 | the type ends. If this type is at the end of the stabstring we | |
3807 | can deal with the omitted semicolon (but we don't have to like | |
3808 | it). Don't bother to complain(), Sun's compiler omits the semicolon | |
3809 | for "void". */ | |
3810 | if (**pp == ';') | |
3811 | ++(*pp); | |
3812 | ||
3813 | if (type_bits == 0) | |
19f392bc | 3814 | { |
77b7c781 UW |
3815 | struct type *type = init_type (objfile, TYPE_CODE_VOID, |
3816 | TARGET_CHAR_BIT, NULL); | |
19f392bc UW |
3817 | if (unsigned_type) |
3818 | TYPE_UNSIGNED (type) = 1; | |
3819 | return type; | |
3820 | } | |
3821 | ||
3822 | if (boolean_type) | |
3823 | return init_boolean_type (objfile, type_bits, unsigned_type, NULL); | |
c906108c | 3824 | else |
19f392bc | 3825 | return init_integer_type (objfile, type_bits, unsigned_type, NULL); |
c906108c SS |
3826 | } |
3827 | ||
3828 | static struct type * | |
a121b7c1 PA |
3829 | read_sun_floating_type (const char **pp, int typenums[2], |
3830 | struct objfile *objfile) | |
c906108c SS |
3831 | { |
3832 | int nbits; | |
3833 | int details; | |
3834 | int nbytes; | |
f65ca430 | 3835 | struct type *rettype; |
c906108c SS |
3836 | |
3837 | /* The first number has more details about the type, for example | |
3838 | FN_COMPLEX. */ | |
94e10a22 | 3839 | details = read_huge_number (pp, ';', &nbits, 0); |
c906108c SS |
3840 | if (nbits != 0) |
3841 | return error_type (pp, objfile); | |
3842 | ||
c378eb4e | 3843 | /* The second number is the number of bytes occupied by this type. */ |
94e10a22 | 3844 | nbytes = read_huge_number (pp, ';', &nbits, 0); |
c906108c SS |
3845 | if (nbits != 0) |
3846 | return error_type (pp, objfile); | |
3847 | ||
19f392bc UW |
3848 | nbits = nbytes * TARGET_CHAR_BIT; |
3849 | ||
c906108c SS |
3850 | if (details == NF_COMPLEX || details == NF_COMPLEX16 |
3851 | || details == NF_COMPLEX32) | |
f65ca430 | 3852 | { |
9b790ce7 | 3853 | rettype = dbx_init_float_type (objfile, nbits / 2); |
19f392bc | 3854 | return init_complex_type (objfile, NULL, rettype); |
f65ca430 | 3855 | } |
c906108c | 3856 | |
9b790ce7 | 3857 | return dbx_init_float_type (objfile, nbits); |
c906108c SS |
3858 | } |
3859 | ||
3860 | /* Read a number from the string pointed to by *PP. | |
3861 | The value of *PP is advanced over the number. | |
3862 | If END is nonzero, the character that ends the | |
3863 | number must match END, or an error happens; | |
3864 | and that character is skipped if it does match. | |
3865 | If END is zero, *PP is left pointing to that character. | |
3866 | ||
94e10a22 JG |
3867 | If TWOS_COMPLEMENT_BITS is set to a strictly positive value and if |
3868 | the number is represented in an octal representation, assume that | |
3869 | it is represented in a 2's complement representation with a size of | |
3870 | TWOS_COMPLEMENT_BITS. | |
3871 | ||
c906108c SS |
3872 | If the number fits in a long, set *BITS to 0 and return the value. |
3873 | If not, set *BITS to be the number of bits in the number and return 0. | |
3874 | ||
3875 | If encounter garbage, set *BITS to -1 and return 0. */ | |
3876 | ||
c2d11a7d | 3877 | static long |
a121b7c1 PA |
3878 | read_huge_number (const char **pp, int end, int *bits, |
3879 | int twos_complement_bits) | |
c906108c | 3880 | { |
a121b7c1 | 3881 | const char *p = *pp; |
c906108c | 3882 | int sign = 1; |
51e9e0d4 | 3883 | int sign_bit = 0; |
c2d11a7d | 3884 | long n = 0; |
c906108c SS |
3885 | int radix = 10; |
3886 | char overflow = 0; | |
3887 | int nbits = 0; | |
3888 | int c; | |
c2d11a7d | 3889 | long upper_limit; |
a2699720 | 3890 | int twos_complement_representation = 0; |
c5aa993b | 3891 | |
c906108c SS |
3892 | if (*p == '-') |
3893 | { | |
3894 | sign = -1; | |
3895 | p++; | |
3896 | } | |
3897 | ||
3898 | /* Leading zero means octal. GCC uses this to output values larger | |
3899 | than an int (because that would be hard in decimal). */ | |
3900 | if (*p == '0') | |
3901 | { | |
3902 | radix = 8; | |
3903 | p++; | |
3904 | } | |
3905 | ||
a2699720 PA |
3906 | /* Skip extra zeros. */ |
3907 | while (*p == '0') | |
3908 | p++; | |
3909 | ||
3910 | if (sign > 0 && radix == 8 && twos_complement_bits > 0) | |
3911 | { | |
3912 | /* Octal, possibly signed. Check if we have enough chars for a | |
3913 | negative number. */ | |
3914 | ||
3915 | size_t len; | |
a121b7c1 | 3916 | const char *p1 = p; |
433759f7 | 3917 | |
a2699720 PA |
3918 | while ((c = *p1) >= '0' && c < '8') |
3919 | p1++; | |
3920 | ||
3921 | len = p1 - p; | |
3922 | if (len > twos_complement_bits / 3 | |
3e43a32a MS |
3923 | || (twos_complement_bits % 3 == 0 |
3924 | && len == twos_complement_bits / 3)) | |
a2699720 PA |
3925 | { |
3926 | /* Ok, we have enough characters for a signed value, check | |
3927 | for signness by testing if the sign bit is set. */ | |
3928 | sign_bit = (twos_complement_bits % 3 + 2) % 3; | |
3929 | c = *p - '0'; | |
3930 | if (c & (1 << sign_bit)) | |
3931 | { | |
3932 | /* Definitely signed. */ | |
3933 | twos_complement_representation = 1; | |
3934 | sign = -1; | |
3935 | } | |
3936 | } | |
3937 | } | |
3938 | ||
1b831c93 | 3939 | upper_limit = LONG_MAX / radix; |
c906108c SS |
3940 | |
3941 | while ((c = *p++) >= '0' && c < ('0' + radix)) | |
3942 | { | |
3943 | if (n <= upper_limit) | |
94e10a22 JG |
3944 | { |
3945 | if (twos_complement_representation) | |
3946 | { | |
a2699720 PA |
3947 | /* Octal, signed, twos complement representation. In |
3948 | this case, n is the corresponding absolute value. */ | |
3949 | if (n == 0) | |
3950 | { | |
3951 | long sn = c - '0' - ((2 * (c - '0')) | (2 << sign_bit)); | |
433759f7 | 3952 | |
a2699720 PA |
3953 | n = -sn; |
3954 | } | |
94e10a22 JG |
3955 | else |
3956 | { | |
a2699720 PA |
3957 | n *= radix; |
3958 | n -= c - '0'; | |
94e10a22 | 3959 | } |
94e10a22 JG |
3960 | } |
3961 | else | |
3962 | { | |
3963 | /* unsigned representation */ | |
3964 | n *= radix; | |
c378eb4e | 3965 | n += c - '0'; /* FIXME this overflows anyway. */ |
94e10a22 JG |
3966 | } |
3967 | } | |
c906108c | 3968 | else |
94e10a22 | 3969 | overflow = 1; |
c5aa993b | 3970 | |
c906108c | 3971 | /* This depends on large values being output in octal, which is |
c378eb4e | 3972 | what GCC does. */ |
c906108c SS |
3973 | if (radix == 8) |
3974 | { | |
3975 | if (nbits == 0) | |
3976 | { | |
3977 | if (c == '0') | |
3978 | /* Ignore leading zeroes. */ | |
3979 | ; | |
3980 | else if (c == '1') | |
3981 | nbits = 1; | |
3982 | else if (c == '2' || c == '3') | |
3983 | nbits = 2; | |
3984 | else | |
3985 | nbits = 3; | |
3986 | } | |
3987 | else | |
3988 | nbits += 3; | |
3989 | } | |
3990 | } | |
3991 | if (end) | |
3992 | { | |
3993 | if (c && c != end) | |
3994 | { | |
3995 | if (bits != NULL) | |
3996 | *bits = -1; | |
3997 | return 0; | |
3998 | } | |
3999 | } | |
4000 | else | |
4001 | --p; | |
4002 | ||
a2699720 PA |
4003 | if (radix == 8 && twos_complement_bits > 0 && nbits > twos_complement_bits) |
4004 | { | |
4005 | /* We were supposed to parse a number with maximum | |
4006 | TWOS_COMPLEMENT_BITS bits, but something went wrong. */ | |
4007 | if (bits != NULL) | |
4008 | *bits = -1; | |
4009 | return 0; | |
4010 | } | |
4011 | ||
c906108c SS |
4012 | *pp = p; |
4013 | if (overflow) | |
4014 | { | |
4015 | if (nbits == 0) | |
4016 | { | |
4017 | /* Large decimal constants are an error (because it is hard to | |
4018 | count how many bits are in them). */ | |
4019 | if (bits != NULL) | |
4020 | *bits = -1; | |
4021 | return 0; | |
4022 | } | |
c5aa993b | 4023 | |
c906108c | 4024 | /* -0x7f is the same as 0x80. So deal with it by adding one to |
a2699720 PA |
4025 | the number of bits. Two's complement represention octals |
4026 | can't have a '-' in front. */ | |
4027 | if (sign == -1 && !twos_complement_representation) | |
c906108c SS |
4028 | ++nbits; |
4029 | if (bits) | |
4030 | *bits = nbits; | |
4031 | } | |
4032 | else | |
4033 | { | |
4034 | if (bits) | |
4035 | *bits = 0; | |
a2699720 | 4036 | return n * sign; |
c906108c SS |
4037 | } |
4038 | /* It's *BITS which has the interesting information. */ | |
4039 | return 0; | |
4040 | } | |
4041 | ||
4042 | static struct type * | |
a121b7c1 | 4043 | read_range_type (const char **pp, int typenums[2], int type_size, |
94e10a22 | 4044 | struct objfile *objfile) |
c906108c | 4045 | { |
5e2b427d | 4046 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
a121b7c1 | 4047 | const char *orig_pp = *pp; |
c906108c | 4048 | int rangenums[2]; |
c2d11a7d | 4049 | long n2, n3; |
c906108c SS |
4050 | int n2bits, n3bits; |
4051 | int self_subrange; | |
4052 | struct type *result_type; | |
4053 | struct type *index_type = NULL; | |
4054 | ||
4055 | /* First comes a type we are a subrange of. | |
4056 | In C it is usually 0, 1 or the type being defined. */ | |
4057 | if (read_type_number (pp, rangenums) != 0) | |
4058 | return error_type (pp, objfile); | |
4059 | self_subrange = (rangenums[0] == typenums[0] && | |
4060 | rangenums[1] == typenums[1]); | |
4061 | ||
4062 | if (**pp == '=') | |
4063 | { | |
4064 | *pp = orig_pp; | |
4065 | index_type = read_type (pp, objfile); | |
4066 | } | |
4067 | ||
4068 | /* A semicolon should now follow; skip it. */ | |
4069 | if (**pp == ';') | |
4070 | (*pp)++; | |
4071 | ||
4072 | /* The remaining two operands are usually lower and upper bounds | |
4073 | of the range. But in some special cases they mean something else. */ | |
94e10a22 JG |
4074 | n2 = read_huge_number (pp, ';', &n2bits, type_size); |
4075 | n3 = read_huge_number (pp, ';', &n3bits, type_size); | |
c906108c SS |
4076 | |
4077 | if (n2bits == -1 || n3bits == -1) | |
4078 | return error_type (pp, objfile); | |
4079 | ||
4080 | if (index_type) | |
4081 | goto handle_true_range; | |
4082 | ||
4083 | /* If limits are huge, must be large integral type. */ | |
4084 | if (n2bits != 0 || n3bits != 0) | |
4085 | { | |
4086 | char got_signed = 0; | |
4087 | char got_unsigned = 0; | |
4088 | /* Number of bits in the type. */ | |
4089 | int nbits = 0; | |
4090 | ||
94e10a22 | 4091 | /* If a type size attribute has been specified, the bounds of |
c378eb4e | 4092 | the range should fit in this size. If the lower bounds needs |
94e10a22 JG |
4093 | more bits than the upper bound, then the type is signed. */ |
4094 | if (n2bits <= type_size && n3bits <= type_size) | |
4095 | { | |
4096 | if (n2bits == type_size && n2bits > n3bits) | |
4097 | got_signed = 1; | |
4098 | else | |
4099 | got_unsigned = 1; | |
4100 | nbits = type_size; | |
4101 | } | |
c906108c | 4102 | /* Range from 0 to <large number> is an unsigned large integral type. */ |
94e10a22 | 4103 | else if ((n2bits == 0 && n2 == 0) && n3bits != 0) |
c906108c SS |
4104 | { |
4105 | got_unsigned = 1; | |
4106 | nbits = n3bits; | |
4107 | } | |
4108 | /* Range from <large number> to <large number>-1 is a large signed | |
c5aa993b JM |
4109 | integral type. Take care of the case where <large number> doesn't |
4110 | fit in a long but <large number>-1 does. */ | |
c906108c SS |
4111 | else if ((n2bits != 0 && n3bits != 0 && n2bits == n3bits + 1) |
4112 | || (n2bits != 0 && n3bits == 0 | |
c2d11a7d JM |
4113 | && (n2bits == sizeof (long) * HOST_CHAR_BIT) |
4114 | && n3 == LONG_MAX)) | |
c906108c SS |
4115 | { |
4116 | got_signed = 1; | |
4117 | nbits = n2bits; | |
4118 | } | |
4119 | ||
4120 | if (got_signed || got_unsigned) | |
19f392bc | 4121 | return init_integer_type (objfile, nbits, got_unsigned, NULL); |
c906108c SS |
4122 | else |
4123 | return error_type (pp, objfile); | |
4124 | } | |
4125 | ||
4126 | /* A type defined as a subrange of itself, with bounds both 0, is void. */ | |
4127 | if (self_subrange && n2 == 0 && n3 == 0) | |
77b7c781 | 4128 | return init_type (objfile, TYPE_CODE_VOID, TARGET_CHAR_BIT, NULL); |
c906108c SS |
4129 | |
4130 | /* If n3 is zero and n2 is positive, we want a floating type, and n2 | |
4131 | is the width in bytes. | |
4132 | ||
4133 | Fortran programs appear to use this for complex types also. To | |
4134 | distinguish between floats and complex, g77 (and others?) seem | |
4135 | to use self-subranges for the complexes, and subranges of int for | |
4136 | the floats. | |
4137 | ||
4138 | Also note that for complexes, g77 sets n2 to the size of one of | |
4139 | the member floats, not the whole complex beast. My guess is that | |
c378eb4e | 4140 | this was to work well with pre-COMPLEX versions of gdb. */ |
c906108c SS |
4141 | |
4142 | if (n3 == 0 && n2 > 0) | |
4143 | { | |
1300f5dd | 4144 | struct type *float_type |
9b790ce7 | 4145 | = dbx_init_float_type (objfile, n2 * TARGET_CHAR_BIT); |
1300f5dd | 4146 | |
c906108c | 4147 | if (self_subrange) |
19f392bc | 4148 | return init_complex_type (objfile, NULL, float_type); |
c906108c | 4149 | else |
1300f5dd | 4150 | return float_type; |
c906108c SS |
4151 | } |
4152 | ||
a2699720 | 4153 | /* If the upper bound is -1, it must really be an unsigned integral. */ |
c906108c SS |
4154 | |
4155 | else if (n2 == 0 && n3 == -1) | |
4156 | { | |
a2699720 | 4157 | int bits = type_size; |
433759f7 | 4158 | |
a2699720 PA |
4159 | if (bits <= 0) |
4160 | { | |
4161 | /* We don't know its size. It is unsigned int or unsigned | |
4162 | long. GCC 2.3.3 uses this for long long too, but that is | |
4163 | just a GDB 3.5 compatibility hack. */ | |
5e2b427d | 4164 | bits = gdbarch_int_bit (gdbarch); |
a2699720 PA |
4165 | } |
4166 | ||
19f392bc | 4167 | return init_integer_type (objfile, bits, 1, NULL); |
c906108c SS |
4168 | } |
4169 | ||
4170 | /* Special case: char is defined (Who knows why) as a subrange of | |
4171 | itself with range 0-127. */ | |
4172 | else if (self_subrange && n2 == 0 && n3 == 127) | |
19f392bc | 4173 | { |
77b7c781 UW |
4174 | struct type *type = init_integer_type (objfile, TARGET_CHAR_BIT, |
4175 | 0, NULL); | |
19f392bc UW |
4176 | TYPE_NOSIGN (type) = 1; |
4177 | return type; | |
4178 | } | |
c906108c SS |
4179 | /* We used to do this only for subrange of self or subrange of int. */ |
4180 | else if (n2 == 0) | |
4181 | { | |
a0b3c4fd JM |
4182 | /* -1 is used for the upper bound of (4 byte) "unsigned int" and |
4183 | "unsigned long", and we already checked for that, | |
4184 | so don't need to test for it here. */ | |
4185 | ||
c906108c SS |
4186 | if (n3 < 0) |
4187 | /* n3 actually gives the size. */ | |
19f392bc | 4188 | return init_integer_type (objfile, -n3 * TARGET_CHAR_BIT, 1, NULL); |
c906108c | 4189 | |
7be570e7 | 4190 | /* Is n3 == 2**(8n)-1 for some integer n? Then it's an |
a0b3c4fd JM |
4191 | unsigned n-byte integer. But do require n to be a power of |
4192 | two; we don't want 3- and 5-byte integers flying around. */ | |
4193 | { | |
4194 | int bytes; | |
4195 | unsigned long bits; | |
4196 | ||
4197 | bits = n3; | |
4198 | for (bytes = 0; (bits & 0xff) == 0xff; bytes++) | |
4199 | bits >>= 8; | |
4200 | if (bits == 0 | |
4201 | && ((bytes - 1) & bytes) == 0) /* "bytes is a power of two" */ | |
19f392bc | 4202 | return init_integer_type (objfile, bytes * TARGET_CHAR_BIT, 1, NULL); |
a0b3c4fd | 4203 | } |
c906108c SS |
4204 | } |
4205 | /* I think this is for Convex "long long". Since I don't know whether | |
4206 | Convex sets self_subrange, I also accept that particular size regardless | |
4207 | of self_subrange. */ | |
4208 | else if (n3 == 0 && n2 < 0 | |
4209 | && (self_subrange | |
9a76efb6 | 4210 | || n2 == -gdbarch_long_long_bit |
5e2b427d | 4211 | (gdbarch) / TARGET_CHAR_BIT)) |
19f392bc | 4212 | return init_integer_type (objfile, -n2 * TARGET_CHAR_BIT, 0, NULL); |
c5aa993b | 4213 | else if (n2 == -n3 - 1) |
c906108c SS |
4214 | { |
4215 | if (n3 == 0x7f) | |
19f392bc | 4216 | return init_integer_type (objfile, 8, 0, NULL); |
c906108c | 4217 | if (n3 == 0x7fff) |
19f392bc | 4218 | return init_integer_type (objfile, 16, 0, NULL); |
c906108c | 4219 | if (n3 == 0x7fffffff) |
19f392bc | 4220 | return init_integer_type (objfile, 32, 0, NULL); |
c906108c SS |
4221 | } |
4222 | ||
4223 | /* We have a real range type on our hands. Allocate space and | |
4224 | return a real pointer. */ | |
c5aa993b | 4225 | handle_true_range: |
c906108c SS |
4226 | |
4227 | if (self_subrange) | |
46bf5051 | 4228 | index_type = objfile_type (objfile)->builtin_int; |
c906108c | 4229 | else |
46bf5051 | 4230 | index_type = *dbx_lookup_type (rangenums, objfile); |
c906108c SS |
4231 | if (index_type == NULL) |
4232 | { | |
4233 | /* Does this actually ever happen? Is that why we are worrying | |
4234 | about dealing with it rather than just calling error_type? */ | |
4235 | ||
b98664d3 | 4236 | complaint (_("base type %d of range type is not defined"), rangenums[1]); |
5e2b427d | 4237 | |
46bf5051 | 4238 | index_type = objfile_type (objfile)->builtin_int; |
c906108c SS |
4239 | } |
4240 | ||
0c9c3474 SA |
4241 | result_type |
4242 | = create_static_range_type ((struct type *) NULL, index_type, n2, n3); | |
c906108c SS |
4243 | return (result_type); |
4244 | } | |
4245 | ||
4246 | /* Read in an argument list. This is a list of types, separated by commas | |
0a029df5 DJ |
4247 | and terminated with END. Return the list of types read in, or NULL |
4248 | if there is an error. */ | |
c906108c | 4249 | |
ad2f7632 | 4250 | static struct field * |
a121b7c1 | 4251 | read_args (const char **pp, int end, struct objfile *objfile, int *nargsp, |
ad2f7632 | 4252 | int *varargsp) |
c906108c SS |
4253 | { |
4254 | /* FIXME! Remove this arbitrary limit! */ | |
c378eb4e | 4255 | struct type *types[1024]; /* Allow for fns of 1023 parameters. */ |
ad2f7632 DJ |
4256 | int n = 0, i; |
4257 | struct field *rval; | |
c906108c SS |
4258 | |
4259 | while (**pp != end) | |
4260 | { | |
4261 | if (**pp != ',') | |
4262 | /* Invalid argument list: no ','. */ | |
0a029df5 | 4263 | return NULL; |
c906108c SS |
4264 | (*pp)++; |
4265 | STABS_CONTINUE (pp, objfile); | |
4266 | types[n++] = read_type (pp, objfile); | |
4267 | } | |
c378eb4e | 4268 | (*pp)++; /* get past `end' (the ':' character). */ |
c906108c | 4269 | |
d24d8548 JK |
4270 | if (n == 0) |
4271 | { | |
4272 | /* We should read at least the THIS parameter here. Some broken stabs | |
4273 | output contained `(0,41),(0,42)=@s8;-16;,(0,43),(0,1);' where should | |
4274 | have been present ";-16,(0,43)" reference instead. This way the | |
4275 | excessive ";" marker prematurely stops the parameters parsing. */ | |
4276 | ||
b98664d3 | 4277 | complaint (_("Invalid (empty) method arguments")); |
d24d8548 JK |
4278 | *varargsp = 0; |
4279 | } | |
4280 | else if (TYPE_CODE (types[n - 1]) != TYPE_CODE_VOID) | |
ad2f7632 | 4281 | *varargsp = 1; |
c906108c SS |
4282 | else |
4283 | { | |
ad2f7632 DJ |
4284 | n--; |
4285 | *varargsp = 0; | |
c906108c | 4286 | } |
ad2f7632 | 4287 | |
8d749320 | 4288 | rval = XCNEWVEC (struct field, n); |
ad2f7632 DJ |
4289 | for (i = 0; i < n; i++) |
4290 | rval[i].type = types[i]; | |
4291 | *nargsp = n; | |
c906108c SS |
4292 | return rval; |
4293 | } | |
4294 | \f | |
4295 | /* Common block handling. */ | |
4296 | ||
4297 | /* List of symbols declared since the last BCOMM. This list is a tail | |
4298 | of local_symbols. When ECOMM is seen, the symbols on the list | |
4299 | are noted so their proper addresses can be filled in later, | |
4300 | using the common block base address gotten from the assembler | |
4301 | stabs. */ | |
4302 | ||
4303 | static struct pending *common_block; | |
4304 | static int common_block_i; | |
4305 | ||
4306 | /* Name of the current common block. We get it from the BCOMM instead of the | |
4307 | ECOMM to match IBM documentation (even though IBM puts the name both places | |
4308 | like everyone else). */ | |
4309 | static char *common_block_name; | |
4310 | ||
4311 | /* Process a N_BCOMM symbol. The storage for NAME is not guaranteed | |
4312 | to remain after this function returns. */ | |
4313 | ||
4314 | void | |
a121b7c1 | 4315 | common_block_start (const char *name, struct objfile *objfile) |
c906108c SS |
4316 | { |
4317 | if (common_block_name != NULL) | |
4318 | { | |
b98664d3 | 4319 | complaint (_("Invalid symbol data: common block within common block")); |
c906108c | 4320 | } |
e148f09d TT |
4321 | common_block = *get_local_symbols (); |
4322 | common_block_i = common_block ? common_block->nsyms : 0; | |
224c3ddb SM |
4323 | common_block_name = (char *) obstack_copy0 (&objfile->objfile_obstack, name, |
4324 | strlen (name)); | |
c906108c SS |
4325 | } |
4326 | ||
4327 | /* Process a N_ECOMM symbol. */ | |
4328 | ||
4329 | void | |
fba45db2 | 4330 | common_block_end (struct objfile *objfile) |
c906108c SS |
4331 | { |
4332 | /* Symbols declared since the BCOMM are to have the common block | |
4333 | start address added in when we know it. common_block and | |
4334 | common_block_i point to the first symbol after the BCOMM in | |
4335 | the local_symbols list; copy the list and hang it off the | |
4336 | symbol for the common block name for later fixup. */ | |
4337 | int i; | |
4338 | struct symbol *sym; | |
fe978cb0 | 4339 | struct pending *newobj = 0; |
c906108c SS |
4340 | struct pending *next; |
4341 | int j; | |
4342 | ||
4343 | if (common_block_name == NULL) | |
4344 | { | |
b98664d3 | 4345 | complaint (_("ECOMM symbol unmatched by BCOMM")); |
c906108c SS |
4346 | return; |
4347 | } | |
4348 | ||
e623cf5d | 4349 | sym = allocate_symbol (objfile); |
c378eb4e | 4350 | /* Note: common_block_name already saved on objfile_obstack. */ |
3567439c | 4351 | SYMBOL_SET_LINKAGE_NAME (sym, common_block_name); |
f1e6e072 | 4352 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
c906108c SS |
4353 | |
4354 | /* Now we copy all the symbols which have been defined since the BCOMM. */ | |
4355 | ||
4356 | /* Copy all the struct pendings before common_block. */ | |
e148f09d | 4357 | for (next = *get_local_symbols (); |
c906108c SS |
4358 | next != NULL && next != common_block; |
4359 | next = next->next) | |
4360 | { | |
4361 | for (j = 0; j < next->nsyms; j++) | |
fe978cb0 | 4362 | add_symbol_to_list (next->symbol[j], &newobj); |
c906108c SS |
4363 | } |
4364 | ||
4365 | /* Copy however much of COMMON_BLOCK we need. If COMMON_BLOCK is | |
4366 | NULL, it means copy all the local symbols (which we already did | |
4367 | above). */ | |
4368 | ||
4369 | if (common_block != NULL) | |
4370 | for (j = common_block_i; j < common_block->nsyms; j++) | |
fe978cb0 | 4371 | add_symbol_to_list (common_block->symbol[j], &newobj); |
c906108c | 4372 | |
fe978cb0 | 4373 | SYMBOL_TYPE (sym) = (struct type *) newobj; |
c906108c SS |
4374 | |
4375 | /* Should we be putting local_symbols back to what it was? | |
4376 | Does it matter? */ | |
4377 | ||
3567439c | 4378 | i = hashname (SYMBOL_LINKAGE_NAME (sym)); |
c906108c SS |
4379 | SYMBOL_VALUE_CHAIN (sym) = global_sym_chain[i]; |
4380 | global_sym_chain[i] = sym; | |
4381 | common_block_name = NULL; | |
4382 | } | |
4383 | ||
4384 | /* Add a common block's start address to the offset of each symbol | |
4385 | declared to be in it (by being between a BCOMM/ECOMM pair that uses | |
4386 | the common block name). */ | |
4387 | ||
4388 | static void | |
46cb6474 | 4389 | fix_common_block (struct symbol *sym, CORE_ADDR valu) |
c906108c SS |
4390 | { |
4391 | struct pending *next = (struct pending *) SYMBOL_TYPE (sym); | |
433759f7 | 4392 | |
c5aa993b | 4393 | for (; next; next = next->next) |
c906108c | 4394 | { |
aa1ee363 | 4395 | int j; |
433759f7 | 4396 | |
c906108c SS |
4397 | for (j = next->nsyms - 1; j >= 0; j--) |
4398 | SYMBOL_VALUE_ADDRESS (next->symbol[j]) += valu; | |
4399 | } | |
4400 | } | |
c5aa993b | 4401 | \f |
c906108c SS |
4402 | |
4403 | ||
bf362611 JB |
4404 | /* Add {TYPE, TYPENUMS} to the NONAME_UNDEFS vector. |
4405 | See add_undefined_type for more details. */ | |
c906108c | 4406 | |
a7a48797 | 4407 | static void |
bf362611 JB |
4408 | add_undefined_type_noname (struct type *type, int typenums[2]) |
4409 | { | |
4410 | struct nat nat; | |
4411 | ||
4412 | nat.typenums[0] = typenums [0]; | |
4413 | nat.typenums[1] = typenums [1]; | |
4414 | nat.type = type; | |
4415 | ||
4416 | if (noname_undefs_length == noname_undefs_allocated) | |
4417 | { | |
4418 | noname_undefs_allocated *= 2; | |
4419 | noname_undefs = (struct nat *) | |
4420 | xrealloc ((char *) noname_undefs, | |
4421 | noname_undefs_allocated * sizeof (struct nat)); | |
4422 | } | |
4423 | noname_undefs[noname_undefs_length++] = nat; | |
4424 | } | |
4425 | ||
4426 | /* Add TYPE to the UNDEF_TYPES vector. | |
4427 | See add_undefined_type for more details. */ | |
4428 | ||
4429 | static void | |
4430 | add_undefined_type_1 (struct type *type) | |
c906108c SS |
4431 | { |
4432 | if (undef_types_length == undef_types_allocated) | |
4433 | { | |
4434 | undef_types_allocated *= 2; | |
4435 | undef_types = (struct type **) | |
4436 | xrealloc ((char *) undef_types, | |
4437 | undef_types_allocated * sizeof (struct type *)); | |
4438 | } | |
4439 | undef_types[undef_types_length++] = type; | |
4440 | } | |
4441 | ||
bf362611 JB |
4442 | /* What about types defined as forward references inside of a small lexical |
4443 | scope? */ | |
4444 | /* Add a type to the list of undefined types to be checked through | |
4445 | once this file has been read in. | |
4446 | ||
4447 | In practice, we actually maintain two such lists: The first list | |
4448 | (UNDEF_TYPES) is used for types whose name has been provided, and | |
4449 | concerns forward references (eg 'xs' or 'xu' forward references); | |
4450 | the second list (NONAME_UNDEFS) is used for types whose name is | |
4451 | unknown at creation time, because they were referenced through | |
4452 | their type number before the actual type was declared. | |
4453 | This function actually adds the given type to the proper list. */ | |
4454 | ||
4455 | static void | |
4456 | add_undefined_type (struct type *type, int typenums[2]) | |
4457 | { | |
e86ca25f | 4458 | if (TYPE_NAME (type) == NULL) |
bf362611 JB |
4459 | add_undefined_type_noname (type, typenums); |
4460 | else | |
4461 | add_undefined_type_1 (type); | |
4462 | } | |
4463 | ||
4464 | /* Try to fix all undefined types pushed on the UNDEF_TYPES vector. */ | |
4465 | ||
2c0b251b | 4466 | static void |
46bf5051 | 4467 | cleanup_undefined_types_noname (struct objfile *objfile) |
bf362611 JB |
4468 | { |
4469 | int i; | |
4470 | ||
4471 | for (i = 0; i < noname_undefs_length; i++) | |
4472 | { | |
4473 | struct nat nat = noname_undefs[i]; | |
4474 | struct type **type; | |
4475 | ||
46bf5051 | 4476 | type = dbx_lookup_type (nat.typenums, objfile); |
bf362611 | 4477 | if (nat.type != *type && TYPE_CODE (*type) != TYPE_CODE_UNDEF) |
56953f80 JB |
4478 | { |
4479 | /* The instance flags of the undefined type are still unset, | |
4480 | and needs to be copied over from the reference type. | |
4481 | Since replace_type expects them to be identical, we need | |
4482 | to set these flags manually before hand. */ | |
4483 | TYPE_INSTANCE_FLAGS (nat.type) = TYPE_INSTANCE_FLAGS (*type); | |
4484 | replace_type (nat.type, *type); | |
4485 | } | |
bf362611 JB |
4486 | } |
4487 | ||
4488 | noname_undefs_length = 0; | |
4489 | } | |
4490 | ||
c906108c SS |
4491 | /* Go through each undefined type, see if it's still undefined, and fix it |
4492 | up if possible. We have two kinds of undefined types: | |
4493 | ||
4494 | TYPE_CODE_ARRAY: Array whose target type wasn't defined yet. | |
c5aa993b JM |
4495 | Fix: update array length using the element bounds |
4496 | and the target type's length. | |
c906108c | 4497 | TYPE_CODE_STRUCT, TYPE_CODE_UNION: Structure whose fields were not |
c5aa993b JM |
4498 | yet defined at the time a pointer to it was made. |
4499 | Fix: Do a full lookup on the struct/union tag. */ | |
bf362611 | 4500 | |
2c0b251b | 4501 | static void |
bf362611 | 4502 | cleanup_undefined_types_1 (void) |
c906108c SS |
4503 | { |
4504 | struct type **type; | |
4505 | ||
9e386756 JB |
4506 | /* Iterate over every undefined type, and look for a symbol whose type |
4507 | matches our undefined type. The symbol matches if: | |
4508 | 1. It is a typedef in the STRUCT domain; | |
4509 | 2. It has the same name, and same type code; | |
4510 | 3. The instance flags are identical. | |
4511 | ||
4512 | It is important to check the instance flags, because we have seen | |
4513 | examples where the debug info contained definitions such as: | |
4514 | ||
4515 | "foo_t:t30=B31=xefoo_t:" | |
4516 | ||
4517 | In this case, we have created an undefined type named "foo_t" whose | |
4518 | instance flags is null (when processing "xefoo_t"), and then created | |
4519 | another type with the same name, but with different instance flags | |
4520 | ('B' means volatile). I think that the definition above is wrong, | |
4521 | since the same type cannot be volatile and non-volatile at the same | |
4522 | time, but we need to be able to cope with it when it happens. The | |
4523 | approach taken here is to treat these two types as different. */ | |
4524 | ||
c906108c SS |
4525 | for (type = undef_types; type < undef_types + undef_types_length; type++) |
4526 | { | |
4527 | switch (TYPE_CODE (*type)) | |
4528 | { | |
4529 | ||
c5aa993b JM |
4530 | case TYPE_CODE_STRUCT: |
4531 | case TYPE_CODE_UNION: | |
4532 | case TYPE_CODE_ENUM: | |
c906108c SS |
4533 | { |
4534 | /* Check if it has been defined since. Need to do this here | |
4535 | as well as in check_typedef to deal with the (legitimate in | |
4536 | C though not C++) case of several types with the same name | |
4537 | in different source files. */ | |
74a9bb82 | 4538 | if (TYPE_STUB (*type)) |
c906108c SS |
4539 | { |
4540 | struct pending *ppt; | |
4541 | int i; | |
c378eb4e | 4542 | /* Name of the type, without "struct" or "union". */ |
e86ca25f | 4543 | const char *type_name = TYPE_NAME (*type); |
c906108c | 4544 | |
fe978cb0 | 4545 | if (type_name == NULL) |
c906108c | 4546 | { |
b98664d3 | 4547 | complaint (_("need a type name")); |
c906108c SS |
4548 | break; |
4549 | } | |
e148f09d | 4550 | for (ppt = *get_file_symbols (); ppt; ppt = ppt->next) |
c906108c SS |
4551 | { |
4552 | for (i = 0; i < ppt->nsyms; i++) | |
4553 | { | |
4554 | struct symbol *sym = ppt->symbol[i]; | |
c5aa993b | 4555 | |
c906108c | 4556 | if (SYMBOL_CLASS (sym) == LOC_TYPEDEF |
176620f1 | 4557 | && SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN |
c906108c SS |
4558 | && (TYPE_CODE (SYMBOL_TYPE (sym)) == |
4559 | TYPE_CODE (*type)) | |
9e386756 JB |
4560 | && (TYPE_INSTANCE_FLAGS (*type) == |
4561 | TYPE_INSTANCE_FLAGS (SYMBOL_TYPE (sym))) | |
3567439c | 4562 | && strcmp (SYMBOL_LINKAGE_NAME (sym), |
fe978cb0 | 4563 | type_name) == 0) |
13a393b0 | 4564 | replace_type (*type, SYMBOL_TYPE (sym)); |
c906108c SS |
4565 | } |
4566 | } | |
4567 | } | |
4568 | } | |
4569 | break; | |
4570 | ||
4571 | default: | |
4572 | { | |
b98664d3 | 4573 | complaint (_("forward-referenced types left unresolved, " |
e2e0b3e5 | 4574 | "type code %d."), |
23136709 | 4575 | TYPE_CODE (*type)); |
c906108c SS |
4576 | } |
4577 | break; | |
4578 | } | |
4579 | } | |
4580 | ||
4581 | undef_types_length = 0; | |
4582 | } | |
4583 | ||
bf362611 JB |
4584 | /* Try to fix all the undefined types we ecountered while processing |
4585 | this unit. */ | |
4586 | ||
4587 | void | |
0a0edcd5 | 4588 | cleanup_undefined_stabs_types (struct objfile *objfile) |
bf362611 JB |
4589 | { |
4590 | cleanup_undefined_types_1 (); | |
46bf5051 | 4591 | cleanup_undefined_types_noname (objfile); |
bf362611 JB |
4592 | } |
4593 | ||
77d6f1aa | 4594 | /* See stabsread.h. */ |
c906108c SS |
4595 | |
4596 | void | |
fba45db2 | 4597 | scan_file_globals (struct objfile *objfile) |
c906108c SS |
4598 | { |
4599 | int hash; | |
4600 | struct minimal_symbol *msymbol; | |
507836c0 | 4601 | struct symbol *sym, *prev; |
c906108c SS |
4602 | struct objfile *resolve_objfile; |
4603 | ||
4604 | /* SVR4 based linkers copy referenced global symbols from shared | |
4605 | libraries to the main executable. | |
4606 | If we are scanning the symbols for a shared library, try to resolve | |
4607 | them from the minimal symbols of the main executable first. */ | |
4608 | ||
4609 | if (symfile_objfile && objfile != symfile_objfile) | |
4610 | resolve_objfile = symfile_objfile; | |
4611 | else | |
4612 | resolve_objfile = objfile; | |
4613 | ||
4614 | while (1) | |
4615 | { | |
4616 | /* Avoid expensive loop through all minimal symbols if there are | |
c5aa993b | 4617 | no unresolved symbols. */ |
c906108c SS |
4618 | for (hash = 0; hash < HASHSIZE; hash++) |
4619 | { | |
4620 | if (global_sym_chain[hash]) | |
4621 | break; | |
4622 | } | |
4623 | if (hash >= HASHSIZE) | |
4624 | return; | |
4625 | ||
3567439c | 4626 | ALL_OBJFILE_MSYMBOLS (resolve_objfile, msymbol) |
c906108c SS |
4627 | { |
4628 | QUIT; | |
4629 | ||
4630 | /* Skip static symbols. */ | |
4631 | switch (MSYMBOL_TYPE (msymbol)) | |
4632 | { | |
4633 | case mst_file_text: | |
4634 | case mst_file_data: | |
4635 | case mst_file_bss: | |
4636 | continue; | |
4637 | default: | |
4638 | break; | |
4639 | } | |
4640 | ||
4641 | prev = NULL; | |
4642 | ||
4643 | /* Get the hash index and check all the symbols | |
c378eb4e | 4644 | under that hash index. */ |
c906108c | 4645 | |
efd66ac6 | 4646 | hash = hashname (MSYMBOL_LINKAGE_NAME (msymbol)); |
c906108c SS |
4647 | |
4648 | for (sym = global_sym_chain[hash]; sym;) | |
4649 | { | |
efd66ac6 | 4650 | if (strcmp (MSYMBOL_LINKAGE_NAME (msymbol), |
3567439c | 4651 | SYMBOL_LINKAGE_NAME (sym)) == 0) |
c906108c | 4652 | { |
c906108c | 4653 | /* Splice this symbol out of the hash chain and |
c378eb4e | 4654 | assign the value we have to it. */ |
c906108c SS |
4655 | if (prev) |
4656 | { | |
4657 | SYMBOL_VALUE_CHAIN (prev) = SYMBOL_VALUE_CHAIN (sym); | |
4658 | } | |
4659 | else | |
4660 | { | |
4661 | global_sym_chain[hash] = SYMBOL_VALUE_CHAIN (sym); | |
4662 | } | |
c5aa993b | 4663 | |
c906108c SS |
4664 | /* Check to see whether we need to fix up a common block. */ |
4665 | /* Note: this code might be executed several times for | |
4666 | the same symbol if there are multiple references. */ | |
507836c0 | 4667 | if (sym) |
c906108c | 4668 | { |
507836c0 | 4669 | if (SYMBOL_CLASS (sym) == LOC_BLOCK) |
c906108c | 4670 | { |
507836c0 | 4671 | fix_common_block (sym, |
77e371c0 TT |
4672 | MSYMBOL_VALUE_ADDRESS (resolve_objfile, |
4673 | msymbol)); | |
c906108c SS |
4674 | } |
4675 | else | |
4676 | { | |
507836c0 | 4677 | SYMBOL_VALUE_ADDRESS (sym) |
77e371c0 | 4678 | = MSYMBOL_VALUE_ADDRESS (resolve_objfile, msymbol); |
c906108c | 4679 | } |
efd66ac6 | 4680 | SYMBOL_SECTION (sym) = MSYMBOL_SECTION (msymbol); |
c906108c SS |
4681 | } |
4682 | ||
c906108c SS |
4683 | if (prev) |
4684 | { | |
4685 | sym = SYMBOL_VALUE_CHAIN (prev); | |
4686 | } | |
4687 | else | |
4688 | { | |
4689 | sym = global_sym_chain[hash]; | |
4690 | } | |
4691 | } | |
4692 | else | |
4693 | { | |
4694 | prev = sym; | |
4695 | sym = SYMBOL_VALUE_CHAIN (sym); | |
4696 | } | |
4697 | } | |
4698 | } | |
4699 | if (resolve_objfile == objfile) | |
4700 | break; | |
4701 | resolve_objfile = objfile; | |
4702 | } | |
4703 | ||
4704 | /* Change the storage class of any remaining unresolved globals to | |
4705 | LOC_UNRESOLVED and remove them from the chain. */ | |
4706 | for (hash = 0; hash < HASHSIZE; hash++) | |
4707 | { | |
4708 | sym = global_sym_chain[hash]; | |
4709 | while (sym) | |
4710 | { | |
4711 | prev = sym; | |
4712 | sym = SYMBOL_VALUE_CHAIN (sym); | |
4713 | ||
4714 | /* Change the symbol address from the misleading chain value | |
4715 | to address zero. */ | |
4716 | SYMBOL_VALUE_ADDRESS (prev) = 0; | |
4717 | ||
4718 | /* Complain about unresolved common block symbols. */ | |
4719 | if (SYMBOL_CLASS (prev) == LOC_STATIC) | |
f1e6e072 | 4720 | SYMBOL_ACLASS_INDEX (prev) = LOC_UNRESOLVED; |
c906108c | 4721 | else |
b98664d3 | 4722 | complaint (_("%s: common block `%s' from " |
3e43a32a | 4723 | "global_sym_chain unresolved"), |
4262abfb | 4724 | objfile_name (objfile), SYMBOL_PRINT_NAME (prev)); |
c906108c SS |
4725 | } |
4726 | } | |
4727 | memset (global_sym_chain, 0, sizeof (global_sym_chain)); | |
4728 | } | |
4729 | ||
4730 | /* Initialize anything that needs initializing when starting to read | |
4731 | a fresh piece of a symbol file, e.g. reading in the stuff corresponding | |
4732 | to a psymtab. */ | |
4733 | ||
4734 | void | |
fba45db2 | 4735 | stabsread_init (void) |
c906108c SS |
4736 | { |
4737 | } | |
4738 | ||
4739 | /* Initialize anything that needs initializing when a completely new | |
4740 | symbol file is specified (not just adding some symbols from another | |
4741 | file, e.g. a shared library). */ | |
4742 | ||
4743 | void | |
fba45db2 | 4744 | stabsread_new_init (void) |
c906108c SS |
4745 | { |
4746 | /* Empty the hash table of global syms looking for values. */ | |
4747 | memset (global_sym_chain, 0, sizeof (global_sym_chain)); | |
4748 | } | |
4749 | ||
4750 | /* Initialize anything that needs initializing at the same time as | |
c378eb4e | 4751 | start_symtab() is called. */ |
c906108c | 4752 | |
c5aa993b | 4753 | void |
fba45db2 | 4754 | start_stabs (void) |
c906108c SS |
4755 | { |
4756 | global_stabs = NULL; /* AIX COFF */ | |
4757 | /* Leave FILENUM of 0 free for builtin types and this file's types. */ | |
4758 | n_this_object_header_files = 1; | |
4759 | type_vector_length = 0; | |
4760 | type_vector = (struct type **) 0; | |
5985ac61 | 4761 | within_function = 0; |
c906108c SS |
4762 | |
4763 | /* FIXME: If common_block_name is not already NULL, we should complain(). */ | |
4764 | common_block_name = NULL; | |
c906108c SS |
4765 | } |
4766 | ||
c378eb4e | 4767 | /* Call after end_symtab(). */ |
c906108c | 4768 | |
c5aa993b | 4769 | void |
fba45db2 | 4770 | end_stabs (void) |
c906108c SS |
4771 | { |
4772 | if (type_vector) | |
4773 | { | |
b8c9b27d | 4774 | xfree (type_vector); |
c906108c SS |
4775 | } |
4776 | type_vector = 0; | |
4777 | type_vector_length = 0; | |
4778 | previous_stab_code = 0; | |
4779 | } | |
4780 | ||
4781 | void | |
fba45db2 | 4782 | finish_global_stabs (struct objfile *objfile) |
c906108c SS |
4783 | { |
4784 | if (global_stabs) | |
4785 | { | |
e148f09d | 4786 | patch_block_stabs (*get_global_symbols (), global_stabs, objfile); |
b8c9b27d | 4787 | xfree (global_stabs); |
c906108c SS |
4788 | global_stabs = NULL; |
4789 | } | |
4790 | } | |
4791 | ||
7e1d63ec AF |
4792 | /* Find the end of the name, delimited by a ':', but don't match |
4793 | ObjC symbols which look like -[Foo bar::]:bla. */ | |
a121b7c1 PA |
4794 | static const char * |
4795 | find_name_end (const char *name) | |
7e1d63ec | 4796 | { |
a121b7c1 | 4797 | const char *s = name; |
433759f7 | 4798 | |
7e1d63ec AF |
4799 | if (s[0] == '-' || *s == '+') |
4800 | { | |
4801 | /* Must be an ObjC method symbol. */ | |
4802 | if (s[1] != '[') | |
4803 | { | |
8a3fe4f8 | 4804 | error (_("invalid symbol name \"%s\""), name); |
7e1d63ec AF |
4805 | } |
4806 | s = strchr (s, ']'); | |
4807 | if (s == NULL) | |
4808 | { | |
8a3fe4f8 | 4809 | error (_("invalid symbol name \"%s\""), name); |
7e1d63ec AF |
4810 | } |
4811 | return strchr (s, ':'); | |
4812 | } | |
4813 | else | |
4814 | { | |
4815 | return strchr (s, ':'); | |
4816 | } | |
4817 | } | |
4818 | ||
2150c3ef TT |
4819 | /* See stabsread.h. */ |
4820 | ||
4821 | int | |
4822 | hashname (const char *name) | |
4823 | { | |
4824 | return hash (name, strlen (name)) % HASHSIZE; | |
4825 | } | |
4826 | ||
c378eb4e | 4827 | /* Initializer for this module. */ |
c906108c SS |
4828 | |
4829 | void | |
fba45db2 | 4830 | _initialize_stabsread (void) |
c906108c | 4831 | { |
46bf5051 UW |
4832 | rs6000_builtin_type_data = register_objfile_data (); |
4833 | ||
c906108c SS |
4834 | undef_types_allocated = 20; |
4835 | undef_types_length = 0; | |
8d749320 | 4836 | undef_types = XNEWVEC (struct type *, undef_types_allocated); |
bf362611 JB |
4837 | |
4838 | noname_undefs_allocated = 20; | |
4839 | noname_undefs_length = 0; | |
8d749320 | 4840 | noname_undefs = XNEWVEC (struct nat, noname_undefs_allocated); |
f1e6e072 TT |
4841 | |
4842 | stab_register_index = register_symbol_register_impl (LOC_REGISTER, | |
4843 | &stab_register_funcs); | |
4844 | stab_regparm_index = register_symbol_register_impl (LOC_REGPARM_ADDR, | |
4845 | &stab_register_funcs); | |
c906108c | 4846 | } |