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" | |
39 | #include "buildsym.h" | |
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" | |
c906108c SS |
47 | #include <ctype.h> |
48 | ||
49 | /* Ask stabsread.h to define the vars it normally declares `extern'. */ | |
c5aa993b JM |
50 | #define EXTERN |
51 | /**/ | |
c906108c SS |
52 | #include "stabsread.h" /* Our own declarations */ |
53 | #undef EXTERN | |
54 | ||
52059ffd TT |
55 | struct nextfield |
56 | { | |
57 | struct nextfield *next; | |
58 | ||
59 | /* This is the raw visibility from the stab. It is not checked | |
60 | for being one of the visibilities we recognize, so code which | |
61 | examines this field better be able to deal. */ | |
62 | int visibility; | |
63 | ||
64 | struct field field; | |
65 | }; | |
66 | ||
67 | struct next_fnfieldlist | |
68 | { | |
69 | struct next_fnfieldlist *next; | |
70 | struct fn_fieldlist fn_fieldlist; | |
71 | }; | |
72 | ||
c906108c SS |
73 | /* The routines that read and process a complete stabs for a C struct or |
74 | C++ class pass lists of data member fields and lists of member function | |
75 | fields in an instance of a field_info structure, as defined below. | |
76 | This is part of some reorganization of low level C++ support and is | |
c378eb4e | 77 | expected to eventually go away... (FIXME) */ |
c906108c SS |
78 | |
79 | struct field_info | |
c5aa993b | 80 | { |
52059ffd TT |
81 | struct nextfield *list; |
82 | struct next_fnfieldlist *fnlist; | |
c5aa993b | 83 | }; |
c906108c SS |
84 | |
85 | static void | |
a121b7c1 | 86 | read_one_struct_field (struct field_info *, const char **, const char *, |
a14ed312 | 87 | struct type *, struct objfile *); |
c906108c | 88 | |
a14ed312 | 89 | static struct type *dbx_alloc_type (int[2], struct objfile *); |
c906108c | 90 | |
a121b7c1 | 91 | static long read_huge_number (const char **, int, int *, int); |
c906108c | 92 | |
a121b7c1 | 93 | static struct type *error_type (const char **, struct objfile *); |
c906108c SS |
94 | |
95 | static void | |
a14ed312 KB |
96 | patch_block_stabs (struct pending *, struct pending_stabs *, |
97 | struct objfile *); | |
c906108c | 98 | |
46cb6474 | 99 | static void fix_common_block (struct symbol *, CORE_ADDR); |
c906108c | 100 | |
a121b7c1 | 101 | static int read_type_number (const char **, int *); |
c906108c | 102 | |
a121b7c1 | 103 | static struct type *read_type (const char **, struct objfile *); |
a7a48797 | 104 | |
a121b7c1 PA |
105 | static struct type *read_range_type (const char **, int[2], |
106 | int, struct objfile *); | |
c906108c | 107 | |
a121b7c1 PA |
108 | static struct type *read_sun_builtin_type (const char **, |
109 | int[2], struct objfile *); | |
c906108c | 110 | |
a121b7c1 | 111 | static struct type *read_sun_floating_type (const char **, int[2], |
a14ed312 | 112 | struct objfile *); |
c906108c | 113 | |
a121b7c1 | 114 | static struct type *read_enum_type (const char **, struct type *, struct objfile *); |
c906108c | 115 | |
46bf5051 | 116 | static struct type *rs6000_builtin_type (int, struct objfile *); |
c906108c SS |
117 | |
118 | static int | |
a121b7c1 | 119 | read_member_functions (struct field_info *, const char **, struct type *, |
a14ed312 | 120 | struct objfile *); |
c906108c SS |
121 | |
122 | static int | |
a121b7c1 | 123 | read_struct_fields (struct field_info *, const char **, struct type *, |
a14ed312 | 124 | struct objfile *); |
c906108c SS |
125 | |
126 | static int | |
a121b7c1 | 127 | read_baseclasses (struct field_info *, const char **, struct type *, |
a14ed312 | 128 | struct objfile *); |
c906108c SS |
129 | |
130 | static int | |
a121b7c1 | 131 | read_tilde_fields (struct field_info *, const char **, struct type *, |
a14ed312 | 132 | struct objfile *); |
c906108c | 133 | |
a14ed312 | 134 | static int attach_fn_fields_to_type (struct field_info *, struct type *); |
c906108c | 135 | |
570b8f7c AC |
136 | static int attach_fields_to_type (struct field_info *, struct type *, |
137 | struct objfile *); | |
c906108c | 138 | |
a121b7c1 | 139 | static struct type *read_struct_type (const char **, struct type *, |
2ae1c2d2 | 140 | enum type_code, |
a14ed312 | 141 | struct objfile *); |
c906108c | 142 | |
a121b7c1 | 143 | static struct type *read_array_type (const char **, struct type *, |
a14ed312 | 144 | struct objfile *); |
c906108c | 145 | |
a121b7c1 PA |
146 | static struct field *read_args (const char **, int, struct objfile *, |
147 | int *, int *); | |
c906108c | 148 | |
bf362611 | 149 | static void add_undefined_type (struct type *, int[2]); |
a7a48797 | 150 | |
c906108c | 151 | static int |
a121b7c1 | 152 | read_cpp_abbrev (struct field_info *, const char **, struct type *, |
a14ed312 | 153 | struct objfile *); |
c906108c | 154 | |
a121b7c1 | 155 | static const char *find_name_end (const char *name); |
7e1d63ec | 156 | |
a121b7c1 | 157 | static int process_reference (const char **string); |
c906108c | 158 | |
a14ed312 | 159 | void stabsread_clear_cache (void); |
7be570e7 | 160 | |
8343f86c DJ |
161 | static const char vptr_name[] = "_vptr$"; |
162 | static const char vb_name[] = "_vb$"; | |
c906108c | 163 | |
23136709 KB |
164 | static void |
165 | invalid_cpp_abbrev_complaint (const char *arg1) | |
166 | { | |
b98664d3 | 167 | complaint (_("invalid C++ abbreviation `%s'"), arg1); |
23136709 | 168 | } |
c906108c | 169 | |
23136709 | 170 | static void |
49b0b195 | 171 | reg_value_complaint (int regnum, int num_regs, const char *sym) |
23136709 | 172 | { |
b98664d3 | 173 | complaint (_("bad register number %d (max %d) in symbol %s"), |
49b0b195 | 174 | regnum, num_regs - 1, sym); |
23136709 | 175 | } |
c906108c | 176 | |
23136709 KB |
177 | static void |
178 | stabs_general_complaint (const char *arg1) | |
179 | { | |
b98664d3 | 180 | complaint ("%s", arg1); |
23136709 | 181 | } |
c906108c | 182 | |
c906108c SS |
183 | /* Make a list of forward references which haven't been defined. */ |
184 | ||
185 | static struct type **undef_types; | |
186 | static int undef_types_allocated; | |
187 | static int undef_types_length; | |
188 | static struct symbol *current_symbol = NULL; | |
189 | ||
bf362611 JB |
190 | /* Make a list of nameless types that are undefined. |
191 | This happens when another type is referenced by its number | |
c378eb4e | 192 | before this type is actually defined. For instance "t(0,1)=k(0,2)" |
bf362611 JB |
193 | and type (0,2) is defined only later. */ |
194 | ||
195 | struct nat | |
196 | { | |
197 | int typenums[2]; | |
198 | struct type *type; | |
199 | }; | |
200 | static struct nat *noname_undefs; | |
201 | static int noname_undefs_allocated; | |
202 | static int noname_undefs_length; | |
203 | ||
c906108c SS |
204 | /* Check for and handle cretinous stabs symbol name continuation! */ |
205 | #define STABS_CONTINUE(pp,objfile) \ | |
206 | do { \ | |
207 | if (**(pp) == '\\' || (**(pp) == '?' && (*(pp))[1] == '\0')) \ | |
208 | *(pp) = next_symbol_text (objfile); \ | |
209 | } while (0) | |
fc474241 DE |
210 | |
211 | /* Vector of types defined so far, indexed by their type numbers. | |
212 | (In newer sun systems, dbx uses a pair of numbers in parens, | |
213 | as in "(SUBFILENUM,NUMWITHINSUBFILE)". | |
214 | Then these numbers must be translated through the type_translations | |
215 | hash table to get the index into the type vector.) */ | |
216 | ||
217 | static struct type **type_vector; | |
218 | ||
219 | /* Number of elements allocated for type_vector currently. */ | |
220 | ||
221 | static int type_vector_length; | |
222 | ||
223 | /* Initial size of type vector. Is realloc'd larger if needed, and | |
224 | realloc'd down to the size actually used, when completed. */ | |
225 | ||
226 | #define INITIAL_TYPE_VECTOR_LENGTH 160 | |
c906108c | 227 | \f |
c906108c SS |
228 | |
229 | /* Look up a dbx type-number pair. Return the address of the slot | |
230 | where the type for that number-pair is stored. | |
231 | The number-pair is in TYPENUMS. | |
232 | ||
233 | This can be used for finding the type associated with that pair | |
234 | or for associating a new type with the pair. */ | |
235 | ||
a7a48797 | 236 | static struct type ** |
46bf5051 | 237 | dbx_lookup_type (int typenums[2], struct objfile *objfile) |
c906108c | 238 | { |
52f0bd74 AC |
239 | int filenum = typenums[0]; |
240 | int index = typenums[1]; | |
c906108c | 241 | unsigned old_len; |
52f0bd74 AC |
242 | int real_filenum; |
243 | struct header_file *f; | |
c906108c SS |
244 | int f_orig_length; |
245 | ||
246 | if (filenum == -1) /* -1,-1 is for temporary types. */ | |
247 | return 0; | |
248 | ||
249 | if (filenum < 0 || filenum >= n_this_object_header_files) | |
250 | { | |
b98664d3 | 251 | complaint (_("Invalid symbol data: type number " |
3e43a32a | 252 | "(%d,%d) out of range at symtab pos %d."), |
23136709 | 253 | filenum, index, symnum); |
c906108c SS |
254 | goto error_return; |
255 | } | |
256 | ||
257 | if (filenum == 0) | |
258 | { | |
259 | if (index < 0) | |
260 | { | |
261 | /* Caller wants address of address of type. We think | |
262 | that negative (rs6k builtin) types will never appear as | |
263 | "lvalues", (nor should they), so we stuff the real type | |
264 | pointer into a temp, and return its address. If referenced, | |
265 | this will do the right thing. */ | |
266 | static struct type *temp_type; | |
267 | ||
46bf5051 | 268 | temp_type = rs6000_builtin_type (index, objfile); |
c906108c SS |
269 | return &temp_type; |
270 | } | |
271 | ||
272 | /* Type is defined outside of header files. | |
c5aa993b | 273 | Find it in this object file's type vector. */ |
c906108c SS |
274 | if (index >= type_vector_length) |
275 | { | |
276 | old_len = type_vector_length; | |
277 | if (old_len == 0) | |
278 | { | |
279 | type_vector_length = INITIAL_TYPE_VECTOR_LENGTH; | |
8d749320 | 280 | type_vector = XNEWVEC (struct type *, type_vector_length); |
c906108c SS |
281 | } |
282 | while (index >= type_vector_length) | |
283 | { | |
284 | type_vector_length *= 2; | |
285 | } | |
286 | type_vector = (struct type **) | |
287 | xrealloc ((char *) type_vector, | |
288 | (type_vector_length * sizeof (struct type *))); | |
289 | memset (&type_vector[old_len], 0, | |
290 | (type_vector_length - old_len) * sizeof (struct type *)); | |
c906108c SS |
291 | } |
292 | return (&type_vector[index]); | |
293 | } | |
294 | else | |
295 | { | |
296 | real_filenum = this_object_header_files[filenum]; | |
297 | ||
46bf5051 | 298 | if (real_filenum >= N_HEADER_FILES (objfile)) |
c906108c | 299 | { |
46bf5051 | 300 | static struct type *temp_type; |
c906108c | 301 | |
8a3fe4f8 | 302 | warning (_("GDB internal error: bad real_filenum")); |
c906108c SS |
303 | |
304 | error_return: | |
46bf5051 UW |
305 | temp_type = objfile_type (objfile)->builtin_error; |
306 | return &temp_type; | |
c906108c SS |
307 | } |
308 | ||
46bf5051 | 309 | f = HEADER_FILES (objfile) + real_filenum; |
c906108c SS |
310 | |
311 | f_orig_length = f->length; | |
312 | if (index >= f_orig_length) | |
313 | { | |
314 | while (index >= f->length) | |
315 | { | |
316 | f->length *= 2; | |
317 | } | |
318 | f->vector = (struct type **) | |
319 | xrealloc ((char *) f->vector, f->length * sizeof (struct type *)); | |
320 | memset (&f->vector[f_orig_length], 0, | |
321 | (f->length - f_orig_length) * sizeof (struct type *)); | |
322 | } | |
323 | return (&f->vector[index]); | |
324 | } | |
325 | } | |
326 | ||
327 | /* Make sure there is a type allocated for type numbers TYPENUMS | |
328 | and return the type object. | |
329 | This can create an empty (zeroed) type object. | |
330 | TYPENUMS may be (-1, -1) to return a new type object that is not | |
c378eb4e | 331 | put into the type vector, and so may not be referred to by number. */ |
c906108c SS |
332 | |
333 | static struct type * | |
35a2f538 | 334 | dbx_alloc_type (int typenums[2], struct objfile *objfile) |
c906108c | 335 | { |
52f0bd74 | 336 | struct type **type_addr; |
c906108c SS |
337 | |
338 | if (typenums[0] == -1) | |
339 | { | |
340 | return (alloc_type (objfile)); | |
341 | } | |
342 | ||
46bf5051 | 343 | type_addr = dbx_lookup_type (typenums, objfile); |
c906108c SS |
344 | |
345 | /* If we are referring to a type not known at all yet, | |
346 | allocate an empty type for it. | |
347 | We will fill it in later if we find out how. */ | |
348 | if (*type_addr == 0) | |
349 | { | |
350 | *type_addr = alloc_type (objfile); | |
351 | } | |
352 | ||
353 | return (*type_addr); | |
354 | } | |
355 | ||
9b790ce7 UW |
356 | /* Allocate a floating-point type of size BITS. */ |
357 | ||
358 | static struct type * | |
359 | dbx_init_float_type (struct objfile *objfile, int bits) | |
360 | { | |
361 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
362 | const struct floatformat **format; | |
363 | struct type *type; | |
364 | ||
365 | format = gdbarch_floatformat_for_type (gdbarch, NULL, bits); | |
366 | if (format) | |
367 | type = init_float_type (objfile, bits, NULL, format); | |
368 | else | |
77b7c781 | 369 | type = init_type (objfile, TYPE_CODE_ERROR, bits, NULL); |
9b790ce7 UW |
370 | |
371 | return type; | |
372 | } | |
373 | ||
c906108c | 374 | /* for all the stabs in a given stab vector, build appropriate types |
c378eb4e | 375 | and fix their symbols in given symbol vector. */ |
c906108c SS |
376 | |
377 | static void | |
fba45db2 KB |
378 | patch_block_stabs (struct pending *symbols, struct pending_stabs *stabs, |
379 | struct objfile *objfile) | |
c906108c SS |
380 | { |
381 | int ii; | |
382 | char *name; | |
a121b7c1 | 383 | const char *pp; |
c906108c SS |
384 | struct symbol *sym; |
385 | ||
386 | if (stabs) | |
387 | { | |
c906108c | 388 | /* for all the stab entries, find their corresponding symbols and |
c378eb4e | 389 | patch their types! */ |
c5aa993b | 390 | |
c906108c SS |
391 | for (ii = 0; ii < stabs->count; ++ii) |
392 | { | |
393 | name = stabs->stab[ii]; | |
c5aa993b | 394 | pp = (char *) strchr (name, ':'); |
8fb822e0 | 395 | gdb_assert (pp); /* Must find a ':' or game's over. */ |
c906108c SS |
396 | while (pp[1] == ':') |
397 | { | |
c5aa993b JM |
398 | pp += 2; |
399 | pp = (char *) strchr (pp, ':'); | |
c906108c | 400 | } |
c5aa993b | 401 | sym = find_symbol_in_list (symbols, name, pp - name); |
c906108c SS |
402 | if (!sym) |
403 | { | |
404 | /* FIXME-maybe: it would be nice if we noticed whether | |
c5aa993b JM |
405 | the variable was defined *anywhere*, not just whether |
406 | it is defined in this compilation unit. But neither | |
407 | xlc or GCC seem to need such a definition, and until | |
408 | we do psymtabs (so that the minimal symbols from all | |
409 | compilation units are available now), I'm not sure | |
410 | how to get the information. */ | |
c906108c SS |
411 | |
412 | /* On xcoff, if a global is defined and never referenced, | |
c5aa993b JM |
413 | ld will remove it from the executable. There is then |
414 | a N_GSYM stab for it, but no regular (C_EXT) symbol. */ | |
e623cf5d | 415 | sym = allocate_symbol (objfile); |
176620f1 | 416 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
f1e6e072 | 417 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
3567439c | 418 | SYMBOL_SET_LINKAGE_NAME |
224c3ddb SM |
419 | (sym, (char *) obstack_copy0 (&objfile->objfile_obstack, |
420 | name, pp - name)); | |
c906108c | 421 | pp += 2; |
c5aa993b | 422 | if (*(pp - 1) == 'F' || *(pp - 1) == 'f') |
c906108c SS |
423 | { |
424 | /* I don't think the linker does this with functions, | |
425 | so as far as I know this is never executed. | |
426 | But it doesn't hurt to check. */ | |
427 | SYMBOL_TYPE (sym) = | |
428 | lookup_function_type (read_type (&pp, objfile)); | |
429 | } | |
430 | else | |
431 | { | |
432 | SYMBOL_TYPE (sym) = read_type (&pp, objfile); | |
433 | } | |
434 | add_symbol_to_list (sym, &global_symbols); | |
435 | } | |
436 | else | |
437 | { | |
438 | pp += 2; | |
c5aa993b | 439 | if (*(pp - 1) == 'F' || *(pp - 1) == 'f') |
c906108c SS |
440 | { |
441 | SYMBOL_TYPE (sym) = | |
442 | lookup_function_type (read_type (&pp, objfile)); | |
443 | } | |
444 | else | |
445 | { | |
446 | SYMBOL_TYPE (sym) = read_type (&pp, objfile); | |
447 | } | |
448 | } | |
449 | } | |
450 | } | |
451 | } | |
c906108c | 452 | \f |
c5aa993b | 453 | |
c906108c SS |
454 | /* Read a number by which a type is referred to in dbx data, |
455 | or perhaps read a pair (FILENUM, TYPENUM) in parentheses. | |
456 | Just a single number N is equivalent to (0,N). | |
457 | Return the two numbers by storing them in the vector TYPENUMS. | |
458 | TYPENUMS will then be used as an argument to dbx_lookup_type. | |
459 | ||
460 | Returns 0 for success, -1 for error. */ | |
461 | ||
462 | static int | |
a121b7c1 | 463 | read_type_number (const char **pp, int *typenums) |
c906108c SS |
464 | { |
465 | int nbits; | |
433759f7 | 466 | |
c906108c SS |
467 | if (**pp == '(') |
468 | { | |
469 | (*pp)++; | |
94e10a22 | 470 | typenums[0] = read_huge_number (pp, ',', &nbits, 0); |
c5aa993b JM |
471 | if (nbits != 0) |
472 | return -1; | |
94e10a22 | 473 | typenums[1] = read_huge_number (pp, ')', &nbits, 0); |
c5aa993b JM |
474 | if (nbits != 0) |
475 | return -1; | |
c906108c SS |
476 | } |
477 | else | |
478 | { | |
479 | typenums[0] = 0; | |
94e10a22 | 480 | typenums[1] = read_huge_number (pp, 0, &nbits, 0); |
c5aa993b JM |
481 | if (nbits != 0) |
482 | return -1; | |
c906108c SS |
483 | } |
484 | return 0; | |
485 | } | |
c906108c | 486 | \f |
c5aa993b | 487 | |
c906108c SS |
488 | #define VISIBILITY_PRIVATE '0' /* Stabs character for private field */ |
489 | #define VISIBILITY_PROTECTED '1' /* Stabs character for protected fld */ | |
490 | #define VISIBILITY_PUBLIC '2' /* Stabs character for public field */ | |
491 | #define VISIBILITY_IGNORE '9' /* Optimized out or zero length */ | |
492 | ||
c906108c | 493 | /* Structure for storing pointers to reference definitions for fast lookup |
c378eb4e | 494 | during "process_later". */ |
c906108c SS |
495 | |
496 | struct ref_map | |
497 | { | |
a121b7c1 | 498 | const char *stabs; |
c906108c SS |
499 | CORE_ADDR value; |
500 | struct symbol *sym; | |
501 | }; | |
502 | ||
503 | #define MAX_CHUNK_REFS 100 | |
504 | #define REF_CHUNK_SIZE (MAX_CHUNK_REFS * sizeof (struct ref_map)) | |
505 | #define REF_MAP_SIZE(ref_chunk) ((ref_chunk) * REF_CHUNK_SIZE) | |
506 | ||
c5aa993b | 507 | static struct ref_map *ref_map; |
c906108c | 508 | |
c378eb4e | 509 | /* Ptr to free cell in chunk's linked list. */ |
c5aa993b | 510 | static int ref_count = 0; |
c906108c | 511 | |
c378eb4e | 512 | /* Number of chunks malloced. */ |
c906108c SS |
513 | static int ref_chunk = 0; |
514 | ||
7be570e7 | 515 | /* This file maintains a cache of stabs aliases found in the symbol |
c378eb4e MS |
516 | table. If the symbol table changes, this cache must be cleared |
517 | or we are left holding onto data in invalid obstacks. */ | |
7be570e7 | 518 | void |
fba45db2 | 519 | stabsread_clear_cache (void) |
7be570e7 JM |
520 | { |
521 | ref_count = 0; | |
522 | ref_chunk = 0; | |
523 | } | |
524 | ||
c906108c SS |
525 | /* Create array of pointers mapping refids to symbols and stab strings. |
526 | Add pointers to reference definition symbols and/or their values as we | |
c378eb4e MS |
527 | find them, using their reference numbers as our index. |
528 | These will be used later when we resolve references. */ | |
c906108c | 529 | void |
a121b7c1 | 530 | ref_add (int refnum, struct symbol *sym, const char *stabs, CORE_ADDR value) |
c906108c SS |
531 | { |
532 | if (ref_count == 0) | |
533 | ref_chunk = 0; | |
534 | if (refnum >= ref_count) | |
535 | ref_count = refnum + 1; | |
536 | if (ref_count > ref_chunk * MAX_CHUNK_REFS) | |
537 | { | |
c5aa993b | 538 | int new_slots = ref_count - ref_chunk * MAX_CHUNK_REFS; |
c906108c | 539 | int new_chunks = new_slots / MAX_CHUNK_REFS + 1; |
433759f7 | 540 | |
c906108c SS |
541 | ref_map = (struct ref_map *) |
542 | xrealloc (ref_map, REF_MAP_SIZE (ref_chunk + new_chunks)); | |
433759f7 MS |
543 | memset (ref_map + ref_chunk * MAX_CHUNK_REFS, 0, |
544 | new_chunks * REF_CHUNK_SIZE); | |
c906108c SS |
545 | ref_chunk += new_chunks; |
546 | } | |
547 | ref_map[refnum].stabs = stabs; | |
548 | ref_map[refnum].sym = sym; | |
549 | ref_map[refnum].value = value; | |
550 | } | |
551 | ||
552 | /* Return defined sym for the reference REFNUM. */ | |
553 | struct symbol * | |
fba45db2 | 554 | ref_search (int refnum) |
c906108c SS |
555 | { |
556 | if (refnum < 0 || refnum > ref_count) | |
557 | return 0; | |
558 | return ref_map[refnum].sym; | |
559 | } | |
560 | ||
c906108c SS |
561 | /* Parse a reference id in STRING and return the resulting |
562 | reference number. Move STRING beyond the reference id. */ | |
563 | ||
c5aa993b | 564 | static int |
a121b7c1 | 565 | process_reference (const char **string) |
c906108c | 566 | { |
a121b7c1 | 567 | const char *p; |
c906108c SS |
568 | int refnum = 0; |
569 | ||
c5aa993b JM |
570 | if (**string != '#') |
571 | return 0; | |
572 | ||
c906108c SS |
573 | /* Advance beyond the initial '#'. */ |
574 | p = *string + 1; | |
575 | ||
c378eb4e | 576 | /* Read number as reference id. */ |
c906108c SS |
577 | while (*p && isdigit (*p)) |
578 | { | |
579 | refnum = refnum * 10 + *p - '0'; | |
580 | p++; | |
581 | } | |
582 | *string = p; | |
583 | return refnum; | |
584 | } | |
585 | ||
586 | /* If STRING defines a reference, store away a pointer to the reference | |
587 | definition for later use. Return the reference number. */ | |
588 | ||
589 | int | |
a121b7c1 | 590 | symbol_reference_defined (const char **string) |
c906108c | 591 | { |
a121b7c1 | 592 | const char *p = *string; |
c906108c SS |
593 | int refnum = 0; |
594 | ||
595 | refnum = process_reference (&p); | |
596 | ||
c378eb4e | 597 | /* Defining symbols end in '='. */ |
c5aa993b | 598 | if (*p == '=') |
c906108c | 599 | { |
c378eb4e | 600 | /* Symbol is being defined here. */ |
c906108c SS |
601 | *string = p + 1; |
602 | return refnum; | |
603 | } | |
604 | else | |
605 | { | |
c378eb4e | 606 | /* Must be a reference. Either the symbol has already been defined, |
c906108c SS |
607 | or this is a forward reference to it. */ |
608 | *string = p; | |
609 | return -1; | |
610 | } | |
611 | } | |
612 | ||
768a979c UW |
613 | static int |
614 | stab_reg_to_regnum (struct symbol *sym, struct gdbarch *gdbarch) | |
615 | { | |
616 | int regno = gdbarch_stab_reg_to_regnum (gdbarch, SYMBOL_VALUE (sym)); | |
617 | ||
0fde2c53 DE |
618 | if (regno < 0 |
619 | || regno >= (gdbarch_num_regs (gdbarch) | |
620 | + gdbarch_num_pseudo_regs (gdbarch))) | |
768a979c UW |
621 | { |
622 | reg_value_complaint (regno, | |
623 | gdbarch_num_regs (gdbarch) | |
624 | + gdbarch_num_pseudo_regs (gdbarch), | |
625 | SYMBOL_PRINT_NAME (sym)); | |
626 | ||
c378eb4e | 627 | regno = gdbarch_sp_regnum (gdbarch); /* Known safe, though useless. */ |
768a979c UW |
628 | } |
629 | ||
630 | return regno; | |
631 | } | |
632 | ||
633 | static const struct symbol_register_ops stab_register_funcs = { | |
634 | stab_reg_to_regnum | |
635 | }; | |
636 | ||
f1e6e072 TT |
637 | /* The "aclass" indices for computed symbols. */ |
638 | ||
639 | static int stab_register_index; | |
640 | static int stab_regparm_index; | |
641 | ||
c906108c | 642 | struct symbol * |
a121b7c1 | 643 | define_symbol (CORE_ADDR valu, const char *string, int desc, int type, |
fba45db2 | 644 | struct objfile *objfile) |
c906108c | 645 | { |
5e2b427d | 646 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
52f0bd74 | 647 | struct symbol *sym; |
a121b7c1 | 648 | const char *p = find_name_end (string); |
c906108c SS |
649 | int deftype; |
650 | int synonym = 0; | |
52f0bd74 | 651 | int i; |
c906108c SS |
652 | |
653 | /* We would like to eliminate nameless symbols, but keep their types. | |
654 | E.g. stab entry ":t10=*2" should produce a type 10, which is a pointer | |
c378eb4e MS |
655 | to type 2, but, should not create a symbol to address that type. Since |
656 | the symbol will be nameless, there is no way any user can refer to it. */ | |
c906108c SS |
657 | |
658 | int nameless; | |
659 | ||
660 | /* Ignore syms with empty names. */ | |
661 | if (string[0] == 0) | |
662 | return 0; | |
663 | ||
c378eb4e | 664 | /* Ignore old-style symbols from cc -go. */ |
c906108c SS |
665 | if (p == 0) |
666 | return 0; | |
667 | ||
668 | while (p[1] == ':') | |
669 | { | |
c5aa993b JM |
670 | p += 2; |
671 | p = strchr (p, ':'); | |
681c238c MS |
672 | if (p == NULL) |
673 | { | |
b98664d3 | 674 | complaint ( |
681c238c MS |
675 | _("Bad stabs string '%s'"), string); |
676 | return NULL; | |
677 | } | |
c906108c SS |
678 | } |
679 | ||
680 | /* If a nameless stab entry, all we need is the type, not the symbol. | |
681 | e.g. ":t10=*2" or a nameless enum like " :T16=ered:0,green:1,blue:2,;" */ | |
682 | nameless = (p == string || ((string[0] == ' ') && (string[1] == ':'))); | |
683 | ||
e623cf5d | 684 | current_symbol = sym = allocate_symbol (objfile); |
c906108c | 685 | |
c906108c SS |
686 | if (processing_gcc_compilation) |
687 | { | |
688 | /* GCC 2.x puts the line number in desc. SunOS apparently puts in the | |
c5aa993b JM |
689 | number of bytes occupied by a type or object, which we ignore. */ |
690 | SYMBOL_LINE (sym) = desc; | |
c906108c SS |
691 | } |
692 | else | |
693 | { | |
c5aa993b | 694 | SYMBOL_LINE (sym) = 0; /* unknown */ |
c906108c SS |
695 | } |
696 | ||
025ac414 PM |
697 | SYMBOL_SET_LANGUAGE (sym, current_subfile->language, |
698 | &objfile->objfile_obstack); | |
699 | ||
c906108c SS |
700 | if (is_cplus_marker (string[0])) |
701 | { | |
702 | /* Special GNU C++ names. */ | |
703 | switch (string[1]) | |
704 | { | |
c5aa993b | 705 | case 't': |
1c9e8358 | 706 | SYMBOL_SET_LINKAGE_NAME (sym, "this"); |
c5aa993b | 707 | break; |
c906108c | 708 | |
c5aa993b | 709 | case 'v': /* $vtbl_ptr_type */ |
c5aa993b | 710 | goto normal; |
c906108c | 711 | |
c5aa993b | 712 | case 'e': |
1c9e8358 | 713 | SYMBOL_SET_LINKAGE_NAME (sym, "eh_throw"); |
c5aa993b | 714 | break; |
c906108c | 715 | |
c5aa993b JM |
716 | case '_': |
717 | /* This was an anonymous type that was never fixed up. */ | |
718 | goto normal; | |
c906108c | 719 | |
c5aa993b JM |
720 | case 'X': |
721 | /* SunPRO (3.0 at least) static variable encoding. */ | |
5e2b427d | 722 | if (gdbarch_static_transform_name_p (gdbarch)) |
149ad273 | 723 | goto normal; |
86a73007 | 724 | /* fall through */ |
c906108c | 725 | |
c5aa993b | 726 | default: |
b98664d3 | 727 | complaint (_("Unknown C++ symbol name `%s'"), |
23136709 | 728 | string); |
c378eb4e | 729 | goto normal; /* Do *something* with it. */ |
c906108c SS |
730 | } |
731 | } | |
c906108c SS |
732 | else |
733 | { | |
734 | normal: | |
2f408ecb PA |
735 | std::string new_name; |
736 | ||
df8a16a1 | 737 | if (SYMBOL_LANGUAGE (sym) == language_cplus) |
71c25dea | 738 | { |
224c3ddb | 739 | char *name = (char *) alloca (p - string + 1); |
433759f7 | 740 | |
71c25dea TT |
741 | memcpy (name, string, p - string); |
742 | name[p - string] = '\0'; | |
743 | new_name = cp_canonicalize_string (name); | |
71c25dea | 744 | } |
2f408ecb | 745 | if (!new_name.empty ()) |
71c25dea | 746 | { |
2f408ecb PA |
747 | SYMBOL_SET_NAMES (sym, |
748 | new_name.c_str (), new_name.length (), | |
749 | 1, objfile); | |
71c25dea TT |
750 | } |
751 | else | |
04a679b8 | 752 | SYMBOL_SET_NAMES (sym, string, p - string, 1, objfile); |
45c58896 SW |
753 | |
754 | if (SYMBOL_LANGUAGE (sym) == language_cplus) | |
a10964d1 | 755 | cp_scan_for_anonymous_namespaces (sym, objfile); |
45c58896 | 756 | |
c906108c SS |
757 | } |
758 | p++; | |
759 | ||
760 | /* Determine the type of name being defined. */ | |
761 | #if 0 | |
762 | /* Getting GDB to correctly skip the symbol on an undefined symbol | |
763 | descriptor and not ever dump core is a very dodgy proposition if | |
764 | we do things this way. I say the acorn RISC machine can just | |
765 | fix their compiler. */ | |
766 | /* The Acorn RISC machine's compiler can put out locals that don't | |
767 | start with "234=" or "(3,4)=", so assume anything other than the | |
768 | deftypes we know how to handle is a local. */ | |
769 | if (!strchr ("cfFGpPrStTvVXCR", *p)) | |
770 | #else | |
771 | if (isdigit (*p) || *p == '(' || *p == '-') | |
772 | #endif | |
773 | deftype = 'l'; | |
774 | else | |
775 | deftype = *p++; | |
776 | ||
777 | switch (deftype) | |
778 | { | |
779 | case 'c': | |
780 | /* c is a special case, not followed by a type-number. | |
c5aa993b JM |
781 | SYMBOL:c=iVALUE for an integer constant symbol. |
782 | SYMBOL:c=rVALUE for a floating constant symbol. | |
783 | SYMBOL:c=eTYPE,INTVALUE for an enum constant symbol. | |
784 | e.g. "b:c=e6,0" for "const b = blob1" | |
785 | (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */ | |
c906108c SS |
786 | if (*p != '=') |
787 | { | |
f1e6e072 | 788 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
c906108c | 789 | SYMBOL_TYPE (sym) = error_type (&p, objfile); |
176620f1 | 790 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
791 | add_symbol_to_list (sym, &file_symbols); |
792 | return sym; | |
793 | } | |
794 | ++p; | |
795 | switch (*p++) | |
796 | { | |
797 | case 'r': | |
798 | { | |
4e38b386 | 799 | gdb_byte *dbl_valu; |
6ccb9162 | 800 | struct type *dbl_type; |
c906108c | 801 | |
46bf5051 | 802 | dbl_type = objfile_type (objfile)->builtin_double; |
224c3ddb SM |
803 | dbl_valu |
804 | = (gdb_byte *) obstack_alloc (&objfile->objfile_obstack, | |
805 | TYPE_LENGTH (dbl_type)); | |
f69fdf9b UW |
806 | |
807 | target_float_from_string (dbl_valu, dbl_type, std::string (p)); | |
6ccb9162 UW |
808 | |
809 | SYMBOL_TYPE (sym) = dbl_type; | |
c906108c | 810 | SYMBOL_VALUE_BYTES (sym) = dbl_valu; |
f1e6e072 | 811 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST_BYTES; |
c906108c SS |
812 | } |
813 | break; | |
814 | case 'i': | |
815 | { | |
816 | /* Defining integer constants this way is kind of silly, | |
817 | since 'e' constants allows the compiler to give not | |
818 | only the value, but the type as well. C has at least | |
819 | int, long, unsigned int, and long long as constant | |
820 | types; other languages probably should have at least | |
821 | unsigned as well as signed constants. */ | |
822 | ||
46bf5051 | 823 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_long; |
c906108c | 824 | SYMBOL_VALUE (sym) = atoi (p); |
f1e6e072 | 825 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
c906108c SS |
826 | } |
827 | break; | |
ec8a089a PM |
828 | |
829 | case 'c': | |
830 | { | |
831 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_char; | |
832 | SYMBOL_VALUE (sym) = atoi (p); | |
f1e6e072 | 833 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
ec8a089a PM |
834 | } |
835 | break; | |
836 | ||
837 | case 's': | |
838 | { | |
839 | struct type *range_type; | |
840 | int ind = 0; | |
841 | char quote = *p++; | |
ec8a089a PM |
842 | gdb_byte *string_local = (gdb_byte *) alloca (strlen (p)); |
843 | gdb_byte *string_value; | |
844 | ||
845 | if (quote != '\'' && quote != '"') | |
846 | { | |
f1e6e072 | 847 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
ec8a089a PM |
848 | SYMBOL_TYPE (sym) = error_type (&p, objfile); |
849 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; | |
850 | add_symbol_to_list (sym, &file_symbols); | |
851 | return sym; | |
852 | } | |
853 | ||
854 | /* Find matching quote, rejecting escaped quotes. */ | |
855 | while (*p && *p != quote) | |
856 | { | |
857 | if (*p == '\\' && p[1] == quote) | |
858 | { | |
859 | string_local[ind] = (gdb_byte) quote; | |
860 | ind++; | |
861 | p += 2; | |
862 | } | |
863 | else if (*p) | |
864 | { | |
865 | string_local[ind] = (gdb_byte) (*p); | |
866 | ind++; | |
867 | p++; | |
868 | } | |
869 | } | |
870 | if (*p != quote) | |
871 | { | |
f1e6e072 | 872 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
ec8a089a PM |
873 | SYMBOL_TYPE (sym) = error_type (&p, objfile); |
874 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; | |
875 | add_symbol_to_list (sym, &file_symbols); | |
876 | return sym; | |
877 | } | |
878 | ||
879 | /* NULL terminate the string. */ | |
880 | string_local[ind] = 0; | |
3e43a32a | 881 | range_type |
0c9c3474 SA |
882 | = create_static_range_type (NULL, |
883 | objfile_type (objfile)->builtin_int, | |
884 | 0, ind); | |
ec8a089a PM |
885 | SYMBOL_TYPE (sym) = create_array_type (NULL, |
886 | objfile_type (objfile)->builtin_char, | |
887 | range_type); | |
224c3ddb SM |
888 | string_value |
889 | = (gdb_byte *) obstack_alloc (&objfile->objfile_obstack, ind + 1); | |
ec8a089a PM |
890 | memcpy (string_value, string_local, ind + 1); |
891 | p++; | |
892 | ||
893 | SYMBOL_VALUE_BYTES (sym) = string_value; | |
f1e6e072 | 894 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST_BYTES; |
ec8a089a PM |
895 | } |
896 | break; | |
897 | ||
c906108c SS |
898 | case 'e': |
899 | /* SYMBOL:c=eTYPE,INTVALUE for a constant symbol whose value | |
900 | can be represented as integral. | |
901 | e.g. "b:c=e6,0" for "const b = blob1" | |
902 | (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */ | |
903 | { | |
f1e6e072 | 904 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
c906108c SS |
905 | SYMBOL_TYPE (sym) = read_type (&p, objfile); |
906 | ||
907 | if (*p != ',') | |
908 | { | |
909 | SYMBOL_TYPE (sym) = error_type (&p, objfile); | |
910 | break; | |
911 | } | |
912 | ++p; | |
913 | ||
914 | /* If the value is too big to fit in an int (perhaps because | |
915 | it is unsigned), or something like that, we silently get | |
916 | a bogus value. The type and everything else about it is | |
917 | correct. Ideally, we should be using whatever we have | |
918 | available for parsing unsigned and long long values, | |
919 | however. */ | |
920 | SYMBOL_VALUE (sym) = atoi (p); | |
921 | } | |
922 | break; | |
923 | default: | |
924 | { | |
f1e6e072 | 925 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
c906108c SS |
926 | SYMBOL_TYPE (sym) = error_type (&p, objfile); |
927 | } | |
928 | } | |
176620f1 | 929 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
930 | add_symbol_to_list (sym, &file_symbols); |
931 | return sym; | |
932 | ||
933 | case 'C': | |
934 | /* The name of a caught exception. */ | |
935 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
f1e6e072 | 936 | SYMBOL_ACLASS_INDEX (sym) = LOC_LABEL; |
176620f1 | 937 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
938 | SYMBOL_VALUE_ADDRESS (sym) = valu; |
939 | add_symbol_to_list (sym, &local_symbols); | |
940 | break; | |
941 | ||
942 | case 'f': | |
943 | /* A static function definition. */ | |
944 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
f1e6e072 | 945 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
176620f1 | 946 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
947 | add_symbol_to_list (sym, &file_symbols); |
948 | /* fall into process_function_types. */ | |
949 | ||
950 | process_function_types: | |
951 | /* Function result types are described as the result type in stabs. | |
c5aa993b JM |
952 | We need to convert this to the function-returning-type-X type |
953 | in GDB. E.g. "int" is converted to "function returning int". */ | |
c906108c SS |
954 | if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_FUNC) |
955 | SYMBOL_TYPE (sym) = lookup_function_type (SYMBOL_TYPE (sym)); | |
956 | ||
1e698235 DJ |
957 | /* All functions in C++ have prototypes. Stabs does not offer an |
958 | explicit way to identify prototyped or unprototyped functions, | |
959 | but both GCC and Sun CC emit stabs for the "call-as" type rather | |
960 | than the "declared-as" type for unprototyped functions, so | |
961 | we treat all functions as if they were prototyped. This is used | |
962 | primarily for promotion when calling the function from GDB. */ | |
876cecd0 | 963 | TYPE_PROTOTYPED (SYMBOL_TYPE (sym)) = 1; |
c906108c | 964 | |
c378eb4e | 965 | /* fall into process_prototype_types. */ |
c906108c SS |
966 | |
967 | process_prototype_types: | |
968 | /* Sun acc puts declared types of arguments here. */ | |
969 | if (*p == ';') | |
970 | { | |
971 | struct type *ftype = SYMBOL_TYPE (sym); | |
972 | int nsemi = 0; | |
973 | int nparams = 0; | |
a121b7c1 | 974 | const char *p1 = p; |
c906108c SS |
975 | |
976 | /* Obtain a worst case guess for the number of arguments | |
977 | by counting the semicolons. */ | |
978 | while (*p1) | |
979 | { | |
980 | if (*p1++ == ';') | |
981 | nsemi++; | |
982 | } | |
983 | ||
c378eb4e | 984 | /* Allocate parameter information fields and fill them in. */ |
c906108c SS |
985 | TYPE_FIELDS (ftype) = (struct field *) |
986 | TYPE_ALLOC (ftype, nsemi * sizeof (struct field)); | |
987 | while (*p++ == ';') | |
988 | { | |
989 | struct type *ptype; | |
990 | ||
991 | /* A type number of zero indicates the start of varargs. | |
c5aa993b | 992 | FIXME: GDB currently ignores vararg functions. */ |
c906108c SS |
993 | if (p[0] == '0' && p[1] == '\0') |
994 | break; | |
995 | ptype = read_type (&p, objfile); | |
996 | ||
997 | /* The Sun compilers mark integer arguments, which should | |
c5aa993b | 998 | be promoted to the width of the calling conventions, with |
c378eb4e | 999 | a type which references itself. This type is turned into |
c5aa993b | 1000 | a TYPE_CODE_VOID type by read_type, and we have to turn |
5e2b427d UW |
1001 | it back into builtin_int here. |
1002 | FIXME: Do we need a new builtin_promoted_int_arg ? */ | |
c906108c | 1003 | if (TYPE_CODE (ptype) == TYPE_CODE_VOID) |
46bf5051 | 1004 | ptype = objfile_type (objfile)->builtin_int; |
8176bb6d DJ |
1005 | TYPE_FIELD_TYPE (ftype, nparams) = ptype; |
1006 | TYPE_FIELD_ARTIFICIAL (ftype, nparams++) = 0; | |
c906108c SS |
1007 | } |
1008 | TYPE_NFIELDS (ftype) = nparams; | |
876cecd0 | 1009 | TYPE_PROTOTYPED (ftype) = 1; |
c906108c SS |
1010 | } |
1011 | break; | |
1012 | ||
1013 | case 'F': | |
1014 | /* A global function definition. */ | |
1015 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
f1e6e072 | 1016 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
176620f1 | 1017 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1018 | add_symbol_to_list (sym, &global_symbols); |
1019 | goto process_function_types; | |
1020 | ||
1021 | case 'G': | |
1022 | /* For a class G (global) symbol, it appears that the | |
c5aa993b JM |
1023 | value is not correct. It is necessary to search for the |
1024 | corresponding linker definition to find the value. | |
1025 | These definitions appear at the end of the namelist. */ | |
c906108c | 1026 | SYMBOL_TYPE (sym) = read_type (&p, objfile); |
f1e6e072 | 1027 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
176620f1 | 1028 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c | 1029 | /* Don't add symbol references to global_sym_chain. |
c5aa993b JM |
1030 | Symbol references don't have valid names and wont't match up with |
1031 | minimal symbols when the global_sym_chain is relocated. | |
1032 | We'll fixup symbol references when we fixup the defining symbol. */ | |
3567439c | 1033 | if (SYMBOL_LINKAGE_NAME (sym) && SYMBOL_LINKAGE_NAME (sym)[0] != '#') |
c906108c | 1034 | { |
3567439c | 1035 | i = hashname (SYMBOL_LINKAGE_NAME (sym)); |
c5aa993b JM |
1036 | SYMBOL_VALUE_CHAIN (sym) = global_sym_chain[i]; |
1037 | global_sym_chain[i] = sym; | |
c906108c SS |
1038 | } |
1039 | add_symbol_to_list (sym, &global_symbols); | |
1040 | break; | |
1041 | ||
1042 | /* This case is faked by a conditional above, | |
c5aa993b JM |
1043 | when there is no code letter in the dbx data. |
1044 | Dbx data never actually contains 'l'. */ | |
c906108c SS |
1045 | case 's': |
1046 | case 'l': | |
1047 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
f1e6e072 | 1048 | SYMBOL_ACLASS_INDEX (sym) = LOC_LOCAL; |
c906108c | 1049 | SYMBOL_VALUE (sym) = valu; |
176620f1 | 1050 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1051 | add_symbol_to_list (sym, &local_symbols); |
1052 | break; | |
1053 | ||
1054 | case 'p': | |
1055 | if (*p == 'F') | |
1056 | /* pF is a two-letter code that means a function parameter in Fortran. | |
1057 | The type-number specifies the type of the return value. | |
1058 | Translate it into a pointer-to-function type. */ | |
1059 | { | |
1060 | p++; | |
1061 | SYMBOL_TYPE (sym) | |
1062 | = lookup_pointer_type | |
c5aa993b | 1063 | (lookup_function_type (read_type (&p, objfile))); |
c906108c SS |
1064 | } |
1065 | else | |
1066 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
1067 | ||
f1e6e072 | 1068 | SYMBOL_ACLASS_INDEX (sym) = LOC_ARG; |
c906108c | 1069 | SYMBOL_VALUE (sym) = valu; |
176620f1 | 1070 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
2a2d4dc3 | 1071 | SYMBOL_IS_ARGUMENT (sym) = 1; |
c906108c SS |
1072 | add_symbol_to_list (sym, &local_symbols); |
1073 | ||
5e2b427d | 1074 | if (gdbarch_byte_order (gdbarch) != BFD_ENDIAN_BIG) |
c906108c SS |
1075 | { |
1076 | /* On little-endian machines, this crud is never necessary, | |
1077 | and, if the extra bytes contain garbage, is harmful. */ | |
1078 | break; | |
1079 | } | |
1080 | ||
1081 | /* If it's gcc-compiled, if it says `short', believe it. */ | |
f73e88f9 | 1082 | if (processing_gcc_compilation |
5e2b427d | 1083 | || gdbarch_believe_pcc_promotion (gdbarch)) |
c906108c SS |
1084 | break; |
1085 | ||
5e2b427d | 1086 | if (!gdbarch_believe_pcc_promotion (gdbarch)) |
7a292a7a | 1087 | { |
8ee56bcf AC |
1088 | /* If PCC says a parameter is a short or a char, it is |
1089 | really an int. */ | |
5e2b427d UW |
1090 | if (TYPE_LENGTH (SYMBOL_TYPE (sym)) |
1091 | < gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT | |
8ee56bcf | 1092 | && TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_INT) |
7a292a7a | 1093 | { |
8ee56bcf AC |
1094 | SYMBOL_TYPE (sym) = |
1095 | TYPE_UNSIGNED (SYMBOL_TYPE (sym)) | |
46bf5051 UW |
1096 | ? objfile_type (objfile)->builtin_unsigned_int |
1097 | : objfile_type (objfile)->builtin_int; | |
7a292a7a | 1098 | } |
8ee56bcf | 1099 | break; |
7a292a7a | 1100 | } |
0019cd49 | 1101 | /* Fall through. */ |
c906108c SS |
1102 | |
1103 | case 'P': | |
1104 | /* acc seems to use P to declare the prototypes of functions that | |
1105 | are referenced by this file. gdb is not prepared to deal | |
1106 | with this extra information. FIXME, it ought to. */ | |
1107 | if (type == N_FUN) | |
1108 | { | |
1109 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
1110 | goto process_prototype_types; | |
1111 | } | |
c5aa993b | 1112 | /*FALLTHROUGH */ |
c906108c SS |
1113 | |
1114 | case 'R': | |
1115 | /* Parameter which is in a register. */ | |
1116 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
f1e6e072 | 1117 | SYMBOL_ACLASS_INDEX (sym) = stab_register_index; |
2a2d4dc3 | 1118 | SYMBOL_IS_ARGUMENT (sym) = 1; |
768a979c | 1119 | SYMBOL_VALUE (sym) = valu; |
176620f1 | 1120 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1121 | add_symbol_to_list (sym, &local_symbols); |
1122 | break; | |
1123 | ||
1124 | case 'r': | |
1125 | /* Register variable (either global or local). */ | |
1126 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
f1e6e072 | 1127 | SYMBOL_ACLASS_INDEX (sym) = stab_register_index; |
768a979c | 1128 | SYMBOL_VALUE (sym) = valu; |
176620f1 | 1129 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1130 | if (within_function) |
1131 | { | |
192cb3d4 MK |
1132 | /* Sun cc uses a pair of symbols, one 'p' and one 'r', with |
1133 | the same name to represent an argument passed in a | |
1134 | register. GCC uses 'P' for the same case. So if we find | |
1135 | such a symbol pair we combine it into one 'P' symbol. | |
1136 | For Sun cc we need to do this regardless of | |
1137 | stabs_argument_has_addr, because the compiler puts out | |
1138 | the 'p' symbol even if it never saves the argument onto | |
1139 | the stack. | |
1140 | ||
1141 | On most machines, we want to preserve both symbols, so | |
1142 | that we can still get information about what is going on | |
1143 | with the stack (VAX for computing args_printed, using | |
1144 | stack slots instead of saved registers in backtraces, | |
1145 | etc.). | |
c906108c SS |
1146 | |
1147 | Note that this code illegally combines | |
c5aa993b | 1148 | main(argc) struct foo argc; { register struct foo argc; } |
c906108c SS |
1149 | but this case is considered pathological and causes a warning |
1150 | from a decent compiler. */ | |
1151 | ||
1152 | if (local_symbols | |
1153 | && local_symbols->nsyms > 0 | |
5e2b427d | 1154 | && gdbarch_stabs_argument_has_addr (gdbarch, SYMBOL_TYPE (sym))) |
c906108c SS |
1155 | { |
1156 | struct symbol *prev_sym; | |
433759f7 | 1157 | |
c906108c SS |
1158 | prev_sym = local_symbols->symbol[local_symbols->nsyms - 1]; |
1159 | if ((SYMBOL_CLASS (prev_sym) == LOC_REF_ARG | |
1160 | || SYMBOL_CLASS (prev_sym) == LOC_ARG) | |
3567439c DJ |
1161 | && strcmp (SYMBOL_LINKAGE_NAME (prev_sym), |
1162 | SYMBOL_LINKAGE_NAME (sym)) == 0) | |
c906108c | 1163 | { |
f1e6e072 | 1164 | SYMBOL_ACLASS_INDEX (prev_sym) = stab_register_index; |
c906108c SS |
1165 | /* Use the type from the LOC_REGISTER; that is the type |
1166 | that is actually in that register. */ | |
1167 | SYMBOL_TYPE (prev_sym) = SYMBOL_TYPE (sym); | |
1168 | SYMBOL_VALUE (prev_sym) = SYMBOL_VALUE (sym); | |
1169 | sym = prev_sym; | |
1170 | break; | |
1171 | } | |
1172 | } | |
c5aa993b | 1173 | add_symbol_to_list (sym, &local_symbols); |
c906108c SS |
1174 | } |
1175 | else | |
c5aa993b | 1176 | add_symbol_to_list (sym, &file_symbols); |
c906108c SS |
1177 | break; |
1178 | ||
1179 | case 'S': | |
c378eb4e | 1180 | /* Static symbol at top level of file. */ |
c906108c | 1181 | SYMBOL_TYPE (sym) = read_type (&p, objfile); |
f1e6e072 | 1182 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
c906108c | 1183 | SYMBOL_VALUE_ADDRESS (sym) = valu; |
5e2b427d UW |
1184 | if (gdbarch_static_transform_name_p (gdbarch) |
1185 | && gdbarch_static_transform_name (gdbarch, | |
3567439c DJ |
1186 | SYMBOL_LINKAGE_NAME (sym)) |
1187 | != SYMBOL_LINKAGE_NAME (sym)) | |
c5aa993b | 1188 | { |
3b7344d5 | 1189 | struct bound_minimal_symbol msym; |
433759f7 | 1190 | |
3e43a32a MS |
1191 | msym = lookup_minimal_symbol (SYMBOL_LINKAGE_NAME (sym), |
1192 | NULL, objfile); | |
3b7344d5 | 1193 | if (msym.minsym != NULL) |
c5aa993b | 1194 | { |
0d5cff50 | 1195 | const char *new_name = gdbarch_static_transform_name |
3567439c | 1196 | (gdbarch, SYMBOL_LINKAGE_NAME (sym)); |
433759f7 | 1197 | |
3567439c | 1198 | SYMBOL_SET_LINKAGE_NAME (sym, new_name); |
77e371c0 | 1199 | SYMBOL_VALUE_ADDRESS (sym) = BMSYMBOL_VALUE_ADDRESS (msym); |
c5aa993b JM |
1200 | } |
1201 | } | |
176620f1 | 1202 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1203 | add_symbol_to_list (sym, &file_symbols); |
1204 | break; | |
1205 | ||
1206 | case 't': | |
52eea4ce JB |
1207 | /* In Ada, there is no distinction between typedef and non-typedef; |
1208 | any type declaration implicitly has the equivalent of a typedef, | |
c378eb4e | 1209 | and thus 't' is in fact equivalent to 'Tt'. |
52eea4ce JB |
1210 | |
1211 | Therefore, for Ada units, we check the character immediately | |
1212 | before the 't', and if we do not find a 'T', then make sure to | |
1213 | create the associated symbol in the STRUCT_DOMAIN ('t' definitions | |
1214 | will be stored in the VAR_DOMAIN). If the symbol was indeed | |
1215 | defined as 'Tt' then the STRUCT_DOMAIN symbol will be created | |
1216 | elsewhere, so we don't need to take care of that. | |
1217 | ||
1218 | This is important to do, because of forward references: | |
1219 | The cleanup of undefined types stored in undef_types only uses | |
1220 | STRUCT_DOMAIN symbols to perform the replacement. */ | |
1221 | synonym = (SYMBOL_LANGUAGE (sym) == language_ada && p[-2] != 'T'); | |
1222 | ||
e2cd42dd | 1223 | /* Typedef */ |
c906108c SS |
1224 | SYMBOL_TYPE (sym) = read_type (&p, objfile); |
1225 | ||
1226 | /* For a nameless type, we don't want a create a symbol, thus we | |
c378eb4e | 1227 | did not use `sym'. Return without further processing. */ |
c5aa993b JM |
1228 | if (nameless) |
1229 | return NULL; | |
c906108c | 1230 | |
f1e6e072 | 1231 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
c906108c | 1232 | SYMBOL_VALUE (sym) = valu; |
176620f1 | 1233 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c | 1234 | /* C++ vagaries: we may have a type which is derived from |
c5aa993b JM |
1235 | a base type which did not have its name defined when the |
1236 | derived class was output. We fill in the derived class's | |
1237 | base part member's name here in that case. */ | |
c906108c SS |
1238 | if (TYPE_NAME (SYMBOL_TYPE (sym)) != NULL) |
1239 | if ((TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_STRUCT | |
1240 | || TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_UNION) | |
1241 | && TYPE_N_BASECLASSES (SYMBOL_TYPE (sym))) | |
1242 | { | |
1243 | int j; | |
433759f7 | 1244 | |
c906108c SS |
1245 | for (j = TYPE_N_BASECLASSES (SYMBOL_TYPE (sym)) - 1; j >= 0; j--) |
1246 | if (TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym), j) == 0) | |
1247 | TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym), j) = | |
a737d952 | 1248 | TYPE_NAME (TYPE_BASECLASS (SYMBOL_TYPE (sym), j)); |
c906108c SS |
1249 | } |
1250 | ||
1251 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == NULL) | |
1252 | { | |
1253 | /* gcc-2.6 or later (when using -fvtable-thunks) | |
1254 | emits a unique named type for a vtable entry. | |
c378eb4e | 1255 | Some gdb code depends on that specific name. */ |
c906108c SS |
1256 | extern const char vtbl_ptr_name[]; |
1257 | ||
1258 | if ((TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_PTR | |
3567439c | 1259 | && strcmp (SYMBOL_LINKAGE_NAME (sym), vtbl_ptr_name)) |
c906108c SS |
1260 | || TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_FUNC) |
1261 | { | |
1262 | /* If we are giving a name to a type such as "pointer to | |
c5aa993b JM |
1263 | foo" or "function returning foo", we better not set |
1264 | the TYPE_NAME. If the program contains "typedef char | |
1265 | *caddr_t;", we don't want all variables of type char | |
1266 | * to print as caddr_t. This is not just a | |
1267 | consequence of GDB's type management; PCC and GCC (at | |
1268 | least through version 2.4) both output variables of | |
1269 | either type char * or caddr_t with the type number | |
1270 | defined in the 't' symbol for caddr_t. If a future | |
1271 | compiler cleans this up it GDB is not ready for it | |
1272 | yet, but if it becomes ready we somehow need to | |
1273 | disable this check (without breaking the PCC/GCC2.4 | |
1274 | case). | |
1275 | ||
1276 | Sigh. | |
1277 | ||
1278 | Fortunately, this check seems not to be necessary | |
1279 | for anything except pointers or functions. */ | |
c378eb4e MS |
1280 | /* ezannoni: 2000-10-26. This seems to apply for |
1281 | versions of gcc older than 2.8. This was the original | |
49d97c60 | 1282 | problem: with the following code gdb would tell that |
c378eb4e MS |
1283 | the type for name1 is caddr_t, and func is char(). |
1284 | ||
49d97c60 EZ |
1285 | typedef char *caddr_t; |
1286 | char *name2; | |
1287 | struct x | |
1288 | { | |
c378eb4e | 1289 | char *name1; |
49d97c60 EZ |
1290 | } xx; |
1291 | char *func() | |
1292 | { | |
1293 | } | |
1294 | main () {} | |
1295 | */ | |
1296 | ||
c378eb4e | 1297 | /* Pascal accepts names for pointer types. */ |
49d97c60 EZ |
1298 | if (current_subfile->language == language_pascal) |
1299 | { | |
3567439c | 1300 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_LINKAGE_NAME (sym); |
49d97c60 | 1301 | } |
c906108c SS |
1302 | } |
1303 | else | |
3567439c | 1304 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_LINKAGE_NAME (sym); |
c906108c SS |
1305 | } |
1306 | ||
1307 | add_symbol_to_list (sym, &file_symbols); | |
52eea4ce JB |
1308 | |
1309 | if (synonym) | |
1310 | { | |
1311 | /* Create the STRUCT_DOMAIN clone. */ | |
e623cf5d | 1312 | struct symbol *struct_sym = allocate_symbol (objfile); |
52eea4ce JB |
1313 | |
1314 | *struct_sym = *sym; | |
f1e6e072 | 1315 | SYMBOL_ACLASS_INDEX (struct_sym) = LOC_TYPEDEF; |
52eea4ce JB |
1316 | SYMBOL_VALUE (struct_sym) = valu; |
1317 | SYMBOL_DOMAIN (struct_sym) = STRUCT_DOMAIN; | |
1318 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) | |
3e43a32a MS |
1319 | TYPE_NAME (SYMBOL_TYPE (sym)) |
1320 | = obconcat (&objfile->objfile_obstack, | |
1321 | SYMBOL_LINKAGE_NAME (sym), | |
1322 | (char *) NULL); | |
52eea4ce JB |
1323 | add_symbol_to_list (struct_sym, &file_symbols); |
1324 | } | |
1325 | ||
c906108c SS |
1326 | break; |
1327 | ||
1328 | case 'T': | |
1329 | /* Struct, union, or enum tag. For GNU C++, this can be be followed | |
c5aa993b | 1330 | by 't' which means we are typedef'ing it as well. */ |
c906108c SS |
1331 | synonym = *p == 't'; |
1332 | ||
1333 | if (synonym) | |
1334 | p++; | |
c906108c SS |
1335 | |
1336 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
25caa7a8 | 1337 | |
c906108c | 1338 | /* For a nameless type, we don't want a create a symbol, thus we |
c378eb4e | 1339 | did not use `sym'. Return without further processing. */ |
c5aa993b JM |
1340 | if (nameless) |
1341 | return NULL; | |
c906108c | 1342 | |
f1e6e072 | 1343 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
c906108c | 1344 | SYMBOL_VALUE (sym) = valu; |
176620f1 | 1345 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
e86ca25f TT |
1346 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) |
1347 | TYPE_NAME (SYMBOL_TYPE (sym)) | |
3e43a32a MS |
1348 | = obconcat (&objfile->objfile_obstack, |
1349 | SYMBOL_LINKAGE_NAME (sym), | |
1350 | (char *) NULL); | |
c906108c SS |
1351 | add_symbol_to_list (sym, &file_symbols); |
1352 | ||
1353 | if (synonym) | |
1354 | { | |
c378eb4e | 1355 | /* Clone the sym and then modify it. */ |
e623cf5d | 1356 | struct symbol *typedef_sym = allocate_symbol (objfile); |
433759f7 | 1357 | |
c906108c | 1358 | *typedef_sym = *sym; |
f1e6e072 | 1359 | SYMBOL_ACLASS_INDEX (typedef_sym) = LOC_TYPEDEF; |
c906108c | 1360 | SYMBOL_VALUE (typedef_sym) = valu; |
176620f1 | 1361 | SYMBOL_DOMAIN (typedef_sym) = VAR_DOMAIN; |
c906108c | 1362 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) |
3e43a32a MS |
1363 | TYPE_NAME (SYMBOL_TYPE (sym)) |
1364 | = obconcat (&objfile->objfile_obstack, | |
1365 | SYMBOL_LINKAGE_NAME (sym), | |
1366 | (char *) NULL); | |
c906108c SS |
1367 | add_symbol_to_list (typedef_sym, &file_symbols); |
1368 | } | |
1369 | break; | |
1370 | ||
1371 | case 'V': | |
c378eb4e | 1372 | /* Static symbol of local scope. */ |
c906108c | 1373 | SYMBOL_TYPE (sym) = read_type (&p, objfile); |
f1e6e072 | 1374 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
c906108c | 1375 | SYMBOL_VALUE_ADDRESS (sym) = valu; |
5e2b427d UW |
1376 | if (gdbarch_static_transform_name_p (gdbarch) |
1377 | && gdbarch_static_transform_name (gdbarch, | |
3567439c DJ |
1378 | SYMBOL_LINKAGE_NAME (sym)) |
1379 | != SYMBOL_LINKAGE_NAME (sym)) | |
c5aa993b | 1380 | { |
3b7344d5 | 1381 | struct bound_minimal_symbol msym; |
433759f7 MS |
1382 | |
1383 | msym = lookup_minimal_symbol (SYMBOL_LINKAGE_NAME (sym), | |
1384 | NULL, objfile); | |
3b7344d5 | 1385 | if (msym.minsym != NULL) |
c5aa993b | 1386 | { |
0d5cff50 | 1387 | const char *new_name = gdbarch_static_transform_name |
3567439c | 1388 | (gdbarch, SYMBOL_LINKAGE_NAME (sym)); |
433759f7 | 1389 | |
3567439c | 1390 | SYMBOL_SET_LINKAGE_NAME (sym, new_name); |
77e371c0 | 1391 | SYMBOL_VALUE_ADDRESS (sym) = BMSYMBOL_VALUE_ADDRESS (msym); |
c5aa993b JM |
1392 | } |
1393 | } | |
176620f1 | 1394 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1395 | add_symbol_to_list (sym, &local_symbols); |
1396 | break; | |
1397 | ||
1398 | case 'v': | |
1399 | /* Reference parameter */ | |
1400 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
f1e6e072 | 1401 | SYMBOL_ACLASS_INDEX (sym) = LOC_REF_ARG; |
2a2d4dc3 | 1402 | SYMBOL_IS_ARGUMENT (sym) = 1; |
c906108c | 1403 | SYMBOL_VALUE (sym) = valu; |
176620f1 | 1404 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1405 | add_symbol_to_list (sym, &local_symbols); |
1406 | break; | |
1407 | ||
1408 | case 'a': | |
1409 | /* Reference parameter which is in a register. */ | |
1410 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
f1e6e072 | 1411 | SYMBOL_ACLASS_INDEX (sym) = stab_regparm_index; |
2a2d4dc3 | 1412 | SYMBOL_IS_ARGUMENT (sym) = 1; |
768a979c | 1413 | SYMBOL_VALUE (sym) = valu; |
176620f1 | 1414 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1415 | add_symbol_to_list (sym, &local_symbols); |
1416 | break; | |
1417 | ||
1418 | case 'X': | |
1419 | /* This is used by Sun FORTRAN for "function result value". | |
c5aa993b JM |
1420 | Sun claims ("dbx and dbxtool interfaces", 2nd ed) |
1421 | that Pascal uses it too, but when I tried it Pascal used | |
1422 | "x:3" (local symbol) instead. */ | |
c906108c | 1423 | SYMBOL_TYPE (sym) = read_type (&p, objfile); |
f1e6e072 | 1424 | SYMBOL_ACLASS_INDEX (sym) = LOC_LOCAL; |
c906108c | 1425 | SYMBOL_VALUE (sym) = valu; |
176620f1 | 1426 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1427 | add_symbol_to_list (sym, &local_symbols); |
1428 | break; | |
c906108c SS |
1429 | |
1430 | default: | |
1431 | SYMBOL_TYPE (sym) = error_type (&p, objfile); | |
f1e6e072 | 1432 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
c906108c | 1433 | SYMBOL_VALUE (sym) = 0; |
176620f1 | 1434 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1435 | add_symbol_to_list (sym, &file_symbols); |
1436 | break; | |
1437 | } | |
1438 | ||
192cb3d4 MK |
1439 | /* Some systems pass variables of certain types by reference instead |
1440 | of by value, i.e. they will pass the address of a structure (in a | |
1441 | register or on the stack) instead of the structure itself. */ | |
c906108c | 1442 | |
5e2b427d | 1443 | if (gdbarch_stabs_argument_has_addr (gdbarch, SYMBOL_TYPE (sym)) |
2a2d4dc3 | 1444 | && SYMBOL_IS_ARGUMENT (sym)) |
c906108c | 1445 | { |
2a2d4dc3 | 1446 | /* We have to convert LOC_REGISTER to LOC_REGPARM_ADDR (for |
192cb3d4 | 1447 | variables passed in a register). */ |
2a2d4dc3 | 1448 | if (SYMBOL_CLASS (sym) == LOC_REGISTER) |
f1e6e072 | 1449 | SYMBOL_ACLASS_INDEX (sym) = LOC_REGPARM_ADDR; |
192cb3d4 MK |
1450 | /* Likewise for converting LOC_ARG to LOC_REF_ARG (for the 7th |
1451 | and subsequent arguments on SPARC, for example). */ | |
1452 | else if (SYMBOL_CLASS (sym) == LOC_ARG) | |
f1e6e072 | 1453 | SYMBOL_ACLASS_INDEX (sym) = LOC_REF_ARG; |
c906108c SS |
1454 | } |
1455 | ||
c906108c SS |
1456 | return sym; |
1457 | } | |
1458 | ||
c906108c SS |
1459 | /* Skip rest of this symbol and return an error type. |
1460 | ||
1461 | General notes on error recovery: error_type always skips to the | |
1462 | end of the symbol (modulo cretinous dbx symbol name continuation). | |
1463 | Thus code like this: | |
1464 | ||
1465 | if (*(*pp)++ != ';') | |
c5aa993b | 1466 | return error_type (pp, objfile); |
c906108c SS |
1467 | |
1468 | is wrong because if *pp starts out pointing at '\0' (typically as the | |
1469 | result of an earlier error), it will be incremented to point to the | |
1470 | start of the next symbol, which might produce strange results, at least | |
1471 | if you run off the end of the string table. Instead use | |
1472 | ||
1473 | if (**pp != ';') | |
c5aa993b | 1474 | return error_type (pp, objfile); |
c906108c SS |
1475 | ++*pp; |
1476 | ||
1477 | or | |
1478 | ||
1479 | if (**pp != ';') | |
c5aa993b | 1480 | foo = error_type (pp, objfile); |
c906108c | 1481 | else |
c5aa993b | 1482 | ++*pp; |
c906108c SS |
1483 | |
1484 | And in case it isn't obvious, the point of all this hair is so the compiler | |
1485 | can define new types and new syntaxes, and old versions of the | |
1486 | debugger will be able to read the new symbol tables. */ | |
1487 | ||
1488 | static struct type * | |
a121b7c1 | 1489 | error_type (const char **pp, struct objfile *objfile) |
c906108c | 1490 | { |
b98664d3 | 1491 | complaint (_("couldn't parse type; debugger out of date?")); |
c906108c SS |
1492 | while (1) |
1493 | { | |
1494 | /* Skip to end of symbol. */ | |
1495 | while (**pp != '\0') | |
1496 | { | |
1497 | (*pp)++; | |
1498 | } | |
1499 | ||
1500 | /* Check for and handle cretinous dbx symbol name continuation! */ | |
1501 | if ((*pp)[-1] == '\\' || (*pp)[-1] == '?') | |
1502 | { | |
1503 | *pp = next_symbol_text (objfile); | |
1504 | } | |
1505 | else | |
1506 | { | |
1507 | break; | |
1508 | } | |
1509 | } | |
46bf5051 | 1510 | return objfile_type (objfile)->builtin_error; |
c906108c | 1511 | } |
c906108c | 1512 | \f |
c5aa993b | 1513 | |
c906108c SS |
1514 | /* Read type information or a type definition; return the type. Even |
1515 | though this routine accepts either type information or a type | |
1516 | definition, the distinction is relevant--some parts of stabsread.c | |
1517 | assume that type information starts with a digit, '-', or '(' in | |
1518 | deciding whether to call read_type. */ | |
1519 | ||
a7a48797 | 1520 | static struct type * |
a121b7c1 | 1521 | read_type (const char **pp, struct objfile *objfile) |
c906108c | 1522 | { |
52f0bd74 | 1523 | struct type *type = 0; |
c906108c SS |
1524 | struct type *type1; |
1525 | int typenums[2]; | |
1526 | char type_descriptor; | |
1527 | ||
1528 | /* Size in bits of type if specified by a type attribute, or -1 if | |
1529 | there is no size attribute. */ | |
1530 | int type_size = -1; | |
1531 | ||
c378eb4e | 1532 | /* Used to distinguish string and bitstring from char-array and set. */ |
c906108c SS |
1533 | int is_string = 0; |
1534 | ||
c378eb4e | 1535 | /* Used to distinguish vector from array. */ |
e2cd42dd MS |
1536 | int is_vector = 0; |
1537 | ||
c906108c SS |
1538 | /* Read type number if present. The type number may be omitted. |
1539 | for instance in a two-dimensional array declared with type | |
1540 | "ar1;1;10;ar1;1;10;4". */ | |
1541 | if ((**pp >= '0' && **pp <= '9') | |
1542 | || **pp == '(' | |
1543 | || **pp == '-') | |
1544 | { | |
1545 | if (read_type_number (pp, typenums) != 0) | |
1546 | return error_type (pp, objfile); | |
c5aa993b | 1547 | |
c906108c | 1548 | if (**pp != '=') |
8cfe231d JB |
1549 | { |
1550 | /* Type is not being defined here. Either it already | |
1551 | exists, or this is a forward reference to it. | |
1552 | dbx_alloc_type handles both cases. */ | |
1553 | type = dbx_alloc_type (typenums, objfile); | |
1554 | ||
1555 | /* If this is a forward reference, arrange to complain if it | |
1556 | doesn't get patched up by the time we're done | |
1557 | reading. */ | |
1558 | if (TYPE_CODE (type) == TYPE_CODE_UNDEF) | |
bf362611 | 1559 | add_undefined_type (type, typenums); |
8cfe231d JB |
1560 | |
1561 | return type; | |
1562 | } | |
c906108c SS |
1563 | |
1564 | /* Type is being defined here. */ | |
1565 | /* Skip the '='. | |
c5aa993b JM |
1566 | Also skip the type descriptor - we get it below with (*pp)[-1]. */ |
1567 | (*pp) += 2; | |
c906108c SS |
1568 | } |
1569 | else | |
1570 | { | |
1571 | /* 'typenums=' not present, type is anonymous. Read and return | |
c5aa993b | 1572 | the definition, but don't put it in the type vector. */ |
c906108c SS |
1573 | typenums[0] = typenums[1] = -1; |
1574 | (*pp)++; | |
1575 | } | |
1576 | ||
c5aa993b | 1577 | again: |
c906108c SS |
1578 | type_descriptor = (*pp)[-1]; |
1579 | switch (type_descriptor) | |
1580 | { | |
1581 | case 'x': | |
1582 | { | |
1583 | enum type_code code; | |
1584 | ||
1585 | /* Used to index through file_symbols. */ | |
1586 | struct pending *ppt; | |
1587 | int i; | |
c5aa993b | 1588 | |
c906108c SS |
1589 | /* Name including "struct", etc. */ |
1590 | char *type_name; | |
c5aa993b | 1591 | |
c906108c | 1592 | { |
a121b7c1 | 1593 | const char *from, *p, *q1, *q2; |
c5aa993b | 1594 | |
c906108c SS |
1595 | /* Set the type code according to the following letter. */ |
1596 | switch ((*pp)[0]) | |
1597 | { | |
1598 | case 's': | |
1599 | code = TYPE_CODE_STRUCT; | |
1600 | break; | |
1601 | case 'u': | |
1602 | code = TYPE_CODE_UNION; | |
1603 | break; | |
1604 | case 'e': | |
1605 | code = TYPE_CODE_ENUM; | |
1606 | break; | |
1607 | default: | |
1608 | { | |
1609 | /* Complain and keep going, so compilers can invent new | |
1610 | cross-reference types. */ | |
b98664d3 | 1611 | complaint (_("Unrecognized cross-reference type `%c'"), |
3e43a32a | 1612 | (*pp)[0]); |
c906108c SS |
1613 | code = TYPE_CODE_STRUCT; |
1614 | break; | |
1615 | } | |
1616 | } | |
c5aa993b | 1617 | |
c906108c SS |
1618 | q1 = strchr (*pp, '<'); |
1619 | p = strchr (*pp, ':'); | |
1620 | if (p == NULL) | |
1621 | return error_type (pp, objfile); | |
1622 | if (q1 && p > q1 && p[1] == ':') | |
1623 | { | |
1624 | int nesting_level = 0; | |
433759f7 | 1625 | |
c906108c SS |
1626 | for (q2 = q1; *q2; q2++) |
1627 | { | |
1628 | if (*q2 == '<') | |
1629 | nesting_level++; | |
1630 | else if (*q2 == '>') | |
1631 | nesting_level--; | |
1632 | else if (*q2 == ':' && nesting_level == 0) | |
1633 | break; | |
1634 | } | |
1635 | p = q2; | |
1636 | if (*p != ':') | |
1637 | return error_type (pp, objfile); | |
1638 | } | |
71c25dea TT |
1639 | type_name = NULL; |
1640 | if (current_subfile->language == language_cplus) | |
1641 | { | |
2f408ecb | 1642 | char *name = (char *) alloca (p - *pp + 1); |
433759f7 | 1643 | |
71c25dea TT |
1644 | memcpy (name, *pp, p - *pp); |
1645 | name[p - *pp] = '\0'; | |
2f408ecb PA |
1646 | |
1647 | std::string new_name = cp_canonicalize_string (name); | |
1648 | if (!new_name.empty ()) | |
71c25dea | 1649 | { |
224c3ddb SM |
1650 | type_name |
1651 | = (char *) obstack_copy0 (&objfile->objfile_obstack, | |
2f408ecb PA |
1652 | new_name.c_str (), |
1653 | new_name.length ()); | |
71c25dea TT |
1654 | } |
1655 | } | |
1656 | if (type_name == NULL) | |
1657 | { | |
a121b7c1 | 1658 | char *to = type_name = (char *) |
3e43a32a | 1659 | obstack_alloc (&objfile->objfile_obstack, p - *pp + 1); |
71c25dea TT |
1660 | |
1661 | /* Copy the name. */ | |
1662 | from = *pp + 1; | |
1663 | while (from < p) | |
1664 | *to++ = *from++; | |
1665 | *to = '\0'; | |
1666 | } | |
c5aa993b | 1667 | |
c906108c SS |
1668 | /* Set the pointer ahead of the name which we just read, and |
1669 | the colon. */ | |
71c25dea | 1670 | *pp = p + 1; |
c906108c SS |
1671 | } |
1672 | ||
149d821b JB |
1673 | /* If this type has already been declared, then reuse the same |
1674 | type, rather than allocating a new one. This saves some | |
1675 | memory. */ | |
c906108c SS |
1676 | |
1677 | for (ppt = file_symbols; ppt; ppt = ppt->next) | |
1678 | for (i = 0; i < ppt->nsyms; i++) | |
1679 | { | |
1680 | struct symbol *sym = ppt->symbol[i]; | |
1681 | ||
1682 | if (SYMBOL_CLASS (sym) == LOC_TYPEDEF | |
176620f1 | 1683 | && SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN |
c906108c | 1684 | && (TYPE_CODE (SYMBOL_TYPE (sym)) == code) |
3567439c | 1685 | && strcmp (SYMBOL_LINKAGE_NAME (sym), type_name) == 0) |
c906108c | 1686 | { |
b99607ea | 1687 | obstack_free (&objfile->objfile_obstack, type_name); |
c906108c | 1688 | type = SYMBOL_TYPE (sym); |
149d821b | 1689 | if (typenums[0] != -1) |
46bf5051 | 1690 | *dbx_lookup_type (typenums, objfile) = type; |
c906108c SS |
1691 | return type; |
1692 | } | |
1693 | } | |
1694 | ||
1695 | /* Didn't find the type to which this refers, so we must | |
1696 | be dealing with a forward reference. Allocate a type | |
1697 | structure for it, and keep track of it so we can | |
1698 | fill in the rest of the fields when we get the full | |
1699 | type. */ | |
1700 | type = dbx_alloc_type (typenums, objfile); | |
1701 | TYPE_CODE (type) = code; | |
e86ca25f | 1702 | TYPE_NAME (type) = type_name; |
c5aa993b | 1703 | INIT_CPLUS_SPECIFIC (type); |
876cecd0 | 1704 | TYPE_STUB (type) = 1; |
c906108c | 1705 | |
bf362611 | 1706 | add_undefined_type (type, typenums); |
c906108c SS |
1707 | return type; |
1708 | } | |
1709 | ||
c5aa993b | 1710 | case '-': /* RS/6000 built-in type */ |
c906108c SS |
1711 | case '0': |
1712 | case '1': | |
1713 | case '2': | |
1714 | case '3': | |
1715 | case '4': | |
1716 | case '5': | |
1717 | case '6': | |
1718 | case '7': | |
1719 | case '8': | |
1720 | case '9': | |
1721 | case '(': | |
1722 | (*pp)--; | |
1723 | ||
1724 | /* We deal with something like t(1,2)=(3,4)=... which | |
c378eb4e | 1725 | the Lucid compiler and recent gcc versions (post 2.7.3) use. */ |
c906108c SS |
1726 | |
1727 | /* Allocate and enter the typedef type first. | |
c378eb4e | 1728 | This handles recursive types. */ |
c906108c SS |
1729 | type = dbx_alloc_type (typenums, objfile); |
1730 | TYPE_CODE (type) = TYPE_CODE_TYPEDEF; | |
c5aa993b JM |
1731 | { |
1732 | struct type *xtype = read_type (pp, objfile); | |
433759f7 | 1733 | |
c906108c SS |
1734 | if (type == xtype) |
1735 | { | |
1736 | /* It's being defined as itself. That means it is "void". */ | |
1737 | TYPE_CODE (type) = TYPE_CODE_VOID; | |
1738 | TYPE_LENGTH (type) = 1; | |
1739 | } | |
1740 | else if (type_size >= 0 || is_string) | |
1741 | { | |
dd6bda65 DJ |
1742 | /* This is the absolute wrong way to construct types. Every |
1743 | other debug format has found a way around this problem and | |
1744 | the related problems with unnecessarily stubbed types; | |
1745 | someone motivated should attempt to clean up the issue | |
1746 | here as well. Once a type pointed to has been created it | |
13a393b0 JB |
1747 | should not be modified. |
1748 | ||
1749 | Well, it's not *absolutely* wrong. Constructing recursive | |
1750 | types (trees, linked lists) necessarily entails modifying | |
1751 | types after creating them. Constructing any loop structure | |
1752 | entails side effects. The Dwarf 2 reader does handle this | |
1753 | more gracefully (it never constructs more than once | |
1754 | instance of a type object, so it doesn't have to copy type | |
1755 | objects wholesale), but it still mutates type objects after | |
1756 | other folks have references to them. | |
1757 | ||
1758 | Keep in mind that this circularity/mutation issue shows up | |
1759 | at the source language level, too: C's "incomplete types", | |
1760 | for example. So the proper cleanup, I think, would be to | |
1761 | limit GDB's type smashing to match exactly those required | |
1762 | by the source language. So GDB could have a | |
1763 | "complete_this_type" function, but never create unnecessary | |
1764 | copies of a type otherwise. */ | |
dd6bda65 | 1765 | replace_type (type, xtype); |
c906108c | 1766 | TYPE_NAME (type) = NULL; |
c906108c SS |
1767 | } |
1768 | else | |
1769 | { | |
876cecd0 | 1770 | TYPE_TARGET_STUB (type) = 1; |
c906108c SS |
1771 | TYPE_TARGET_TYPE (type) = xtype; |
1772 | } | |
1773 | } | |
1774 | break; | |
1775 | ||
c5aa993b JM |
1776 | /* In the following types, we must be sure to overwrite any existing |
1777 | type that the typenums refer to, rather than allocating a new one | |
1778 | and making the typenums point to the new one. This is because there | |
1779 | may already be pointers to the existing type (if it had been | |
1780 | forward-referenced), and we must change it to a pointer, function, | |
1781 | reference, or whatever, *in-place*. */ | |
c906108c | 1782 | |
e2cd42dd | 1783 | case '*': /* Pointer to another type */ |
c906108c | 1784 | type1 = read_type (pp, objfile); |
46bf5051 | 1785 | type = make_pointer_type (type1, dbx_lookup_type (typenums, objfile)); |
c906108c SS |
1786 | break; |
1787 | ||
c5aa993b | 1788 | case '&': /* Reference to another type */ |
c906108c | 1789 | type1 = read_type (pp, objfile); |
3b224330 AV |
1790 | type = make_reference_type (type1, dbx_lookup_type (typenums, objfile), |
1791 | TYPE_CODE_REF); | |
c906108c SS |
1792 | break; |
1793 | ||
c5aa993b | 1794 | case 'f': /* Function returning another type */ |
c906108c | 1795 | type1 = read_type (pp, objfile); |
0c8b41f1 | 1796 | type = make_function_type (type1, dbx_lookup_type (typenums, objfile)); |
c906108c SS |
1797 | break; |
1798 | ||
da966255 JB |
1799 | case 'g': /* Prototyped function. (Sun) */ |
1800 | { | |
1801 | /* Unresolved questions: | |
1802 | ||
1803 | - According to Sun's ``STABS Interface Manual'', for 'f' | |
1804 | and 'F' symbol descriptors, a `0' in the argument type list | |
1805 | indicates a varargs function. But it doesn't say how 'g' | |
1806 | type descriptors represent that info. Someone with access | |
1807 | to Sun's toolchain should try it out. | |
1808 | ||
1809 | - According to the comment in define_symbol (search for | |
1810 | `process_prototype_types:'), Sun emits integer arguments as | |
1811 | types which ref themselves --- like `void' types. Do we | |
1812 | have to deal with that here, too? Again, someone with | |
1813 | access to Sun's toolchain should try it out and let us | |
1814 | know. */ | |
1815 | ||
1816 | const char *type_start = (*pp) - 1; | |
1817 | struct type *return_type = read_type (pp, objfile); | |
1818 | struct type *func_type | |
46bf5051 | 1819 | = make_function_type (return_type, |
0c8b41f1 | 1820 | dbx_lookup_type (typenums, objfile)); |
da966255 JB |
1821 | struct type_list { |
1822 | struct type *type; | |
1823 | struct type_list *next; | |
1824 | } *arg_types = 0; | |
1825 | int num_args = 0; | |
1826 | ||
1827 | while (**pp && **pp != '#') | |
1828 | { | |
1829 | struct type *arg_type = read_type (pp, objfile); | |
8d749320 | 1830 | struct type_list *newobj = XALLOCA (struct type_list); |
fe978cb0 PA |
1831 | newobj->type = arg_type; |
1832 | newobj->next = arg_types; | |
1833 | arg_types = newobj; | |
da966255 JB |
1834 | num_args++; |
1835 | } | |
1836 | if (**pp == '#') | |
1837 | ++*pp; | |
1838 | else | |
1839 | { | |
b98664d3 | 1840 | complaint (_("Prototyped function type didn't " |
3e43a32a | 1841 | "end arguments with `#':\n%s"), |
23136709 | 1842 | type_start); |
da966255 JB |
1843 | } |
1844 | ||
1845 | /* If there is just one argument whose type is `void', then | |
1846 | that's just an empty argument list. */ | |
1847 | if (arg_types | |
1848 | && ! arg_types->next | |
1849 | && TYPE_CODE (arg_types->type) == TYPE_CODE_VOID) | |
1850 | num_args = 0; | |
1851 | ||
1852 | TYPE_FIELDS (func_type) | |
1853 | = (struct field *) TYPE_ALLOC (func_type, | |
1854 | num_args * sizeof (struct field)); | |
1855 | memset (TYPE_FIELDS (func_type), 0, num_args * sizeof (struct field)); | |
1856 | { | |
1857 | int i; | |
1858 | struct type_list *t; | |
1859 | ||
1860 | /* We stuck each argument type onto the front of the list | |
1861 | when we read it, so the list is reversed. Build the | |
1862 | fields array right-to-left. */ | |
1863 | for (t = arg_types, i = num_args - 1; t; t = t->next, i--) | |
1864 | TYPE_FIELD_TYPE (func_type, i) = t->type; | |
1865 | } | |
1866 | TYPE_NFIELDS (func_type) = num_args; | |
876cecd0 | 1867 | TYPE_PROTOTYPED (func_type) = 1; |
da966255 JB |
1868 | |
1869 | type = func_type; | |
1870 | break; | |
1871 | } | |
1872 | ||
c5aa993b | 1873 | case 'k': /* Const qualifier on some type (Sun) */ |
c906108c | 1874 | type = read_type (pp, objfile); |
d7242108 | 1875 | type = make_cv_type (1, TYPE_VOLATILE (type), type, |
46bf5051 | 1876 | dbx_lookup_type (typenums, objfile)); |
c906108c SS |
1877 | break; |
1878 | ||
c5aa993b | 1879 | case 'B': /* Volatile qual on some type (Sun) */ |
c906108c | 1880 | type = read_type (pp, objfile); |
d7242108 | 1881 | type = make_cv_type (TYPE_CONST (type), 1, type, |
46bf5051 | 1882 | dbx_lookup_type (typenums, objfile)); |
c906108c SS |
1883 | break; |
1884 | ||
1885 | case '@': | |
c5aa993b JM |
1886 | if (isdigit (**pp) || **pp == '(' || **pp == '-') |
1887 | { /* Member (class & variable) type */ | |
c906108c SS |
1888 | /* FIXME -- we should be doing smash_to_XXX types here. */ |
1889 | ||
1890 | struct type *domain = read_type (pp, objfile); | |
1891 | struct type *memtype; | |
1892 | ||
1893 | if (**pp != ',') | |
1894 | /* Invalid member type data format. */ | |
1895 | return error_type (pp, objfile); | |
1896 | ++*pp; | |
1897 | ||
1898 | memtype = read_type (pp, objfile); | |
1899 | type = dbx_alloc_type (typenums, objfile); | |
0d5de010 | 1900 | smash_to_memberptr_type (type, domain, memtype); |
c906108c | 1901 | } |
c5aa993b JM |
1902 | else |
1903 | /* type attribute */ | |
c906108c | 1904 | { |
a121b7c1 | 1905 | const char *attr = *pp; |
433759f7 | 1906 | |
c906108c SS |
1907 | /* Skip to the semicolon. */ |
1908 | while (**pp != ';' && **pp != '\0') | |
1909 | ++(*pp); | |
1910 | if (**pp == '\0') | |
1911 | return error_type (pp, objfile); | |
1912 | else | |
c5aa993b | 1913 | ++ * pp; /* Skip the semicolon. */ |
c906108c SS |
1914 | |
1915 | switch (*attr) | |
1916 | { | |
e2cd42dd | 1917 | case 's': /* Size attribute */ |
c906108c SS |
1918 | type_size = atoi (attr + 1); |
1919 | if (type_size <= 0) | |
1920 | type_size = -1; | |
1921 | break; | |
1922 | ||
e2cd42dd | 1923 | case 'S': /* String attribute */ |
c378eb4e | 1924 | /* FIXME: check to see if following type is array? */ |
c906108c SS |
1925 | is_string = 1; |
1926 | break; | |
1927 | ||
e2cd42dd | 1928 | case 'V': /* Vector attribute */ |
c378eb4e | 1929 | /* FIXME: check to see if following type is array? */ |
e2cd42dd MS |
1930 | is_vector = 1; |
1931 | break; | |
1932 | ||
c906108c SS |
1933 | default: |
1934 | /* Ignore unrecognized type attributes, so future compilers | |
c5aa993b | 1935 | can invent new ones. */ |
c906108c SS |
1936 | break; |
1937 | } | |
1938 | ++*pp; | |
1939 | goto again; | |
1940 | } | |
1941 | break; | |
1942 | ||
c5aa993b | 1943 | case '#': /* Method (class & fn) type */ |
c906108c SS |
1944 | if ((*pp)[0] == '#') |
1945 | { | |
1946 | /* We'll get the parameter types from the name. */ | |
1947 | struct type *return_type; | |
1948 | ||
1949 | (*pp)++; | |
1950 | return_type = read_type (pp, objfile); | |
1951 | if (*(*pp)++ != ';') | |
b98664d3 | 1952 | complaint (_("invalid (minimal) member type " |
3e43a32a | 1953 | "data format at symtab pos %d."), |
23136709 | 1954 | symnum); |
c906108c SS |
1955 | type = allocate_stub_method (return_type); |
1956 | if (typenums[0] != -1) | |
46bf5051 | 1957 | *dbx_lookup_type (typenums, objfile) = type; |
c906108c SS |
1958 | } |
1959 | else | |
1960 | { | |
1961 | struct type *domain = read_type (pp, objfile); | |
1962 | struct type *return_type; | |
ad2f7632 DJ |
1963 | struct field *args; |
1964 | int nargs, varargs; | |
c906108c SS |
1965 | |
1966 | if (**pp != ',') | |
1967 | /* Invalid member type data format. */ | |
1968 | return error_type (pp, objfile); | |
1969 | else | |
1970 | ++(*pp); | |
1971 | ||
1972 | return_type = read_type (pp, objfile); | |
ad2f7632 | 1973 | args = read_args (pp, ';', objfile, &nargs, &varargs); |
0a029df5 DJ |
1974 | if (args == NULL) |
1975 | return error_type (pp, objfile); | |
c906108c | 1976 | type = dbx_alloc_type (typenums, objfile); |
ad2f7632 DJ |
1977 | smash_to_method_type (type, domain, return_type, args, |
1978 | nargs, varargs); | |
c906108c SS |
1979 | } |
1980 | break; | |
1981 | ||
c5aa993b | 1982 | case 'r': /* Range type */ |
94e10a22 | 1983 | type = read_range_type (pp, typenums, type_size, objfile); |
c906108c | 1984 | if (typenums[0] != -1) |
46bf5051 | 1985 | *dbx_lookup_type (typenums, objfile) = type; |
c906108c SS |
1986 | break; |
1987 | ||
1988 | case 'b': | |
c906108c SS |
1989 | { |
1990 | /* Sun ACC builtin int type */ | |
1991 | type = read_sun_builtin_type (pp, typenums, objfile); | |
1992 | if (typenums[0] != -1) | |
46bf5051 | 1993 | *dbx_lookup_type (typenums, objfile) = type; |
c906108c SS |
1994 | } |
1995 | break; | |
1996 | ||
c5aa993b | 1997 | case 'R': /* Sun ACC builtin float type */ |
c906108c SS |
1998 | type = read_sun_floating_type (pp, typenums, objfile); |
1999 | if (typenums[0] != -1) | |
46bf5051 | 2000 | *dbx_lookup_type (typenums, objfile) = type; |
c906108c | 2001 | break; |
c5aa993b JM |
2002 | |
2003 | case 'e': /* Enumeration type */ | |
c906108c SS |
2004 | type = dbx_alloc_type (typenums, objfile); |
2005 | type = read_enum_type (pp, type, objfile); | |
2006 | if (typenums[0] != -1) | |
46bf5051 | 2007 | *dbx_lookup_type (typenums, objfile) = type; |
c906108c SS |
2008 | break; |
2009 | ||
c5aa993b JM |
2010 | case 's': /* Struct type */ |
2011 | case 'u': /* Union type */ | |
2ae1c2d2 JB |
2012 | { |
2013 | enum type_code type_code = TYPE_CODE_UNDEF; | |
2014 | type = dbx_alloc_type (typenums, objfile); | |
2015 | switch (type_descriptor) | |
2016 | { | |
2017 | case 's': | |
2018 | type_code = TYPE_CODE_STRUCT; | |
2019 | break; | |
2020 | case 'u': | |
2021 | type_code = TYPE_CODE_UNION; | |
2022 | break; | |
2023 | } | |
2024 | type = read_struct_type (pp, type, type_code, objfile); | |
2025 | break; | |
2026 | } | |
c906108c | 2027 | |
c5aa993b | 2028 | case 'a': /* Array type */ |
c906108c SS |
2029 | if (**pp != 'r') |
2030 | return error_type (pp, objfile); | |
2031 | ++*pp; | |
c5aa993b | 2032 | |
c906108c SS |
2033 | type = dbx_alloc_type (typenums, objfile); |
2034 | type = read_array_type (pp, type, objfile); | |
2035 | if (is_string) | |
2036 | TYPE_CODE (type) = TYPE_CODE_STRING; | |
e2cd42dd | 2037 | if (is_vector) |
ea37ba09 | 2038 | make_vector_type (type); |
c906108c SS |
2039 | break; |
2040 | ||
6b1755ce | 2041 | case 'S': /* Set type */ |
c906108c | 2042 | type1 = read_type (pp, objfile); |
c5aa993b | 2043 | type = create_set_type ((struct type *) NULL, type1); |
c906108c | 2044 | if (typenums[0] != -1) |
46bf5051 | 2045 | *dbx_lookup_type (typenums, objfile) = type; |
c906108c SS |
2046 | break; |
2047 | ||
2048 | default: | |
c378eb4e MS |
2049 | --*pp; /* Go back to the symbol in error. */ |
2050 | /* Particularly important if it was \0! */ | |
c906108c SS |
2051 | return error_type (pp, objfile); |
2052 | } | |
2053 | ||
2054 | if (type == 0) | |
2055 | { | |
8a3fe4f8 | 2056 | warning (_("GDB internal error, type is NULL in stabsread.c.")); |
c906108c SS |
2057 | return error_type (pp, objfile); |
2058 | } | |
2059 | ||
2060 | /* Size specified in a type attribute overrides any other size. */ | |
2061 | if (type_size != -1) | |
2062 | TYPE_LENGTH (type) = (type_size + TARGET_CHAR_BIT - 1) / TARGET_CHAR_BIT; | |
2063 | ||
2064 | return type; | |
2065 | } | |
2066 | \f | |
2067 | /* RS/6000 xlc/dbx combination uses a set of builtin types, starting from -1. | |
c378eb4e | 2068 | Return the proper type node for a given builtin type number. */ |
c906108c | 2069 | |
46bf5051 UW |
2070 | static const struct objfile_data *rs6000_builtin_type_data; |
2071 | ||
c906108c | 2072 | static struct type * |
46bf5051 | 2073 | rs6000_builtin_type (int typenum, struct objfile *objfile) |
c906108c | 2074 | { |
19ba03f4 SM |
2075 | struct type **negative_types |
2076 | = (struct type **) objfile_data (objfile, rs6000_builtin_type_data); | |
46bf5051 | 2077 | |
c906108c SS |
2078 | /* We recognize types numbered from -NUMBER_RECOGNIZED to -1. */ |
2079 | #define NUMBER_RECOGNIZED 34 | |
c906108c SS |
2080 | struct type *rettype = NULL; |
2081 | ||
2082 | if (typenum >= 0 || typenum < -NUMBER_RECOGNIZED) | |
2083 | { | |
b98664d3 | 2084 | complaint (_("Unknown builtin type %d"), typenum); |
46bf5051 | 2085 | return objfile_type (objfile)->builtin_error; |
c906108c | 2086 | } |
46bf5051 UW |
2087 | |
2088 | if (!negative_types) | |
2089 | { | |
2090 | /* This includes an empty slot for type number -0. */ | |
2091 | negative_types = OBSTACK_CALLOC (&objfile->objfile_obstack, | |
2092 | NUMBER_RECOGNIZED + 1, struct type *); | |
2093 | set_objfile_data (objfile, rs6000_builtin_type_data, negative_types); | |
2094 | } | |
2095 | ||
c906108c SS |
2096 | if (negative_types[-typenum] != NULL) |
2097 | return negative_types[-typenum]; | |
2098 | ||
2099 | #if TARGET_CHAR_BIT != 8 | |
c5aa993b | 2100 | #error This code wrong for TARGET_CHAR_BIT not 8 |
c906108c SS |
2101 | /* These definitions all assume that TARGET_CHAR_BIT is 8. I think |
2102 | that if that ever becomes not true, the correct fix will be to | |
2103 | make the size in the struct type to be in bits, not in units of | |
2104 | TARGET_CHAR_BIT. */ | |
2105 | #endif | |
2106 | ||
2107 | switch (-typenum) | |
2108 | { | |
2109 | case 1: | |
2110 | /* The size of this and all the other types are fixed, defined | |
c5aa993b JM |
2111 | by the debugging format. If there is a type called "int" which |
2112 | is other than 32 bits, then it should use a new negative type | |
2113 | number (or avoid negative type numbers for that case). | |
2114 | See stabs.texinfo. */ | |
19f392bc | 2115 | rettype = init_integer_type (objfile, 32, 0, "int"); |
c906108c SS |
2116 | break; |
2117 | case 2: | |
19f392bc | 2118 | rettype = init_integer_type (objfile, 8, 0, "char"); |
c413c448 | 2119 | TYPE_NOSIGN (rettype) = 1; |
c906108c SS |
2120 | break; |
2121 | case 3: | |
19f392bc | 2122 | rettype = init_integer_type (objfile, 16, 0, "short"); |
c906108c SS |
2123 | break; |
2124 | case 4: | |
19f392bc | 2125 | rettype = init_integer_type (objfile, 32, 0, "long"); |
c906108c SS |
2126 | break; |
2127 | case 5: | |
19f392bc | 2128 | rettype = init_integer_type (objfile, 8, 1, "unsigned char"); |
c906108c SS |
2129 | break; |
2130 | case 6: | |
19f392bc | 2131 | rettype = init_integer_type (objfile, 8, 0, "signed char"); |
c906108c SS |
2132 | break; |
2133 | case 7: | |
19f392bc | 2134 | rettype = init_integer_type (objfile, 16, 1, "unsigned short"); |
c906108c SS |
2135 | break; |
2136 | case 8: | |
19f392bc | 2137 | rettype = init_integer_type (objfile, 32, 1, "unsigned int"); |
c906108c SS |
2138 | break; |
2139 | case 9: | |
19f392bc | 2140 | rettype = init_integer_type (objfile, 32, 1, "unsigned"); |
89acf84d | 2141 | break; |
c906108c | 2142 | case 10: |
19f392bc | 2143 | rettype = init_integer_type (objfile, 32, 1, "unsigned long"); |
c906108c SS |
2144 | break; |
2145 | case 11: | |
77b7c781 | 2146 | rettype = init_type (objfile, TYPE_CODE_VOID, TARGET_CHAR_BIT, "void"); |
c906108c SS |
2147 | break; |
2148 | case 12: | |
2149 | /* IEEE single precision (32 bit). */ | |
49f190bc UW |
2150 | rettype = init_float_type (objfile, 32, "float", |
2151 | floatformats_ieee_single); | |
c906108c SS |
2152 | break; |
2153 | case 13: | |
2154 | /* IEEE double precision (64 bit). */ | |
49f190bc UW |
2155 | rettype = init_float_type (objfile, 64, "double", |
2156 | floatformats_ieee_double); | |
c906108c SS |
2157 | break; |
2158 | case 14: | |
2159 | /* This is an IEEE double on the RS/6000, and different machines with | |
c5aa993b JM |
2160 | different sizes for "long double" should use different negative |
2161 | type numbers. See stabs.texinfo. */ | |
49f190bc UW |
2162 | rettype = init_float_type (objfile, 64, "long double", |
2163 | floatformats_ieee_double); | |
c906108c SS |
2164 | break; |
2165 | case 15: | |
19f392bc | 2166 | rettype = init_integer_type (objfile, 32, 0, "integer"); |
c906108c SS |
2167 | break; |
2168 | case 16: | |
19f392bc | 2169 | rettype = init_boolean_type (objfile, 32, 1, "boolean"); |
c906108c SS |
2170 | break; |
2171 | case 17: | |
49f190bc UW |
2172 | rettype = init_float_type (objfile, 32, "short real", |
2173 | floatformats_ieee_single); | |
c906108c SS |
2174 | break; |
2175 | case 18: | |
49f190bc UW |
2176 | rettype = init_float_type (objfile, 64, "real", |
2177 | floatformats_ieee_double); | |
c906108c SS |
2178 | break; |
2179 | case 19: | |
19f392bc | 2180 | rettype = init_type (objfile, TYPE_CODE_ERROR, 0, "stringptr"); |
c906108c SS |
2181 | break; |
2182 | case 20: | |
19f392bc | 2183 | rettype = init_character_type (objfile, 8, 1, "character"); |
c906108c SS |
2184 | break; |
2185 | case 21: | |
19f392bc | 2186 | rettype = init_boolean_type (objfile, 8, 1, "logical*1"); |
c906108c SS |
2187 | break; |
2188 | case 22: | |
19f392bc | 2189 | rettype = init_boolean_type (objfile, 16, 1, "logical*2"); |
c906108c SS |
2190 | break; |
2191 | case 23: | |
19f392bc | 2192 | rettype = init_boolean_type (objfile, 32, 1, "logical*4"); |
c906108c SS |
2193 | break; |
2194 | case 24: | |
19f392bc | 2195 | rettype = init_boolean_type (objfile, 32, 1, "logical"); |
c906108c SS |
2196 | break; |
2197 | case 25: | |
2198 | /* Complex type consisting of two IEEE single precision values. */ | |
19f392bc UW |
2199 | rettype = init_complex_type (objfile, "complex", |
2200 | rs6000_builtin_type (12, objfile)); | |
c906108c SS |
2201 | break; |
2202 | case 26: | |
2203 | /* Complex type consisting of two IEEE double precision values. */ | |
19f392bc UW |
2204 | rettype = init_complex_type (objfile, "double complex", |
2205 | rs6000_builtin_type (13, objfile)); | |
c906108c SS |
2206 | break; |
2207 | case 27: | |
19f392bc | 2208 | rettype = init_integer_type (objfile, 8, 0, "integer*1"); |
c906108c SS |
2209 | break; |
2210 | case 28: | |
19f392bc | 2211 | rettype = init_integer_type (objfile, 16, 0, "integer*2"); |
c906108c SS |
2212 | break; |
2213 | case 29: | |
19f392bc | 2214 | rettype = init_integer_type (objfile, 32, 0, "integer*4"); |
c906108c SS |
2215 | break; |
2216 | case 30: | |
19f392bc | 2217 | rettype = init_character_type (objfile, 16, 0, "wchar"); |
c906108c SS |
2218 | break; |
2219 | case 31: | |
19f392bc | 2220 | rettype = init_integer_type (objfile, 64, 0, "long long"); |
c906108c SS |
2221 | break; |
2222 | case 32: | |
19f392bc | 2223 | rettype = init_integer_type (objfile, 64, 1, "unsigned long long"); |
c906108c SS |
2224 | break; |
2225 | case 33: | |
19f392bc | 2226 | rettype = init_integer_type (objfile, 64, 1, "logical*8"); |
c906108c SS |
2227 | break; |
2228 | case 34: | |
19f392bc | 2229 | rettype = init_integer_type (objfile, 64, 0, "integer*8"); |
c906108c SS |
2230 | break; |
2231 | } | |
2232 | negative_types[-typenum] = rettype; | |
2233 | return rettype; | |
2234 | } | |
2235 | \f | |
2236 | /* This page contains subroutines of read_type. */ | |
2237 | ||
0d5cff50 DE |
2238 | /* Wrapper around method_name_from_physname to flag a complaint |
2239 | if there is an error. */ | |
de17c821 | 2240 | |
0d5cff50 DE |
2241 | static char * |
2242 | stabs_method_name_from_physname (const char *physname) | |
de17c821 DJ |
2243 | { |
2244 | char *method_name; | |
2245 | ||
2246 | method_name = method_name_from_physname (physname); | |
2247 | ||
2248 | if (method_name == NULL) | |
c263362b | 2249 | { |
b98664d3 | 2250 | complaint (_("Method has bad physname %s\n"), physname); |
0d5cff50 | 2251 | return NULL; |
c263362b | 2252 | } |
de17c821 | 2253 | |
0d5cff50 | 2254 | return method_name; |
de17c821 DJ |
2255 | } |
2256 | ||
c906108c SS |
2257 | /* Read member function stabs info for C++ classes. The form of each member |
2258 | function data is: | |
2259 | ||
c5aa993b | 2260 | NAME :: TYPENUM[=type definition] ARGS : PHYSNAME ; |
c906108c SS |
2261 | |
2262 | An example with two member functions is: | |
2263 | ||
c5aa993b | 2264 | afunc1::20=##15;:i;2A.;afunc2::20:i;2A.; |
c906108c SS |
2265 | |
2266 | For the case of overloaded operators, the format is op$::*.funcs, where | |
2267 | $ is the CPLUS_MARKER (usually '$'), `*' holds the place for an operator | |
2268 | name (such as `+=') and `.' marks the end of the operator name. | |
2269 | ||
2270 | Returns 1 for success, 0 for failure. */ | |
2271 | ||
2272 | static int | |
a121b7c1 PA |
2273 | read_member_functions (struct field_info *fip, const char **pp, |
2274 | struct type *type, struct objfile *objfile) | |
c906108c SS |
2275 | { |
2276 | int nfn_fields = 0; | |
2277 | int length = 0; | |
c906108c SS |
2278 | int i; |
2279 | struct next_fnfield | |
2280 | { | |
2281 | struct next_fnfield *next; | |
2282 | struct fn_field fn_field; | |
c5aa993b JM |
2283 | } |
2284 | *sublist; | |
c906108c SS |
2285 | struct type *look_ahead_type; |
2286 | struct next_fnfieldlist *new_fnlist; | |
2287 | struct next_fnfield *new_sublist; | |
2288 | char *main_fn_name; | |
a121b7c1 | 2289 | const char *p; |
c5aa993b | 2290 | |
c906108c | 2291 | /* Process each list until we find something that is not a member function |
c378eb4e | 2292 | or find the end of the functions. */ |
c906108c SS |
2293 | |
2294 | while (**pp != ';') | |
2295 | { | |
2296 | /* We should be positioned at the start of the function name. | |
c5aa993b | 2297 | Scan forward to find the first ':' and if it is not the |
c378eb4e | 2298 | first of a "::" delimiter, then this is not a member function. */ |
c906108c SS |
2299 | p = *pp; |
2300 | while (*p != ':') | |
2301 | { | |
2302 | p++; | |
2303 | } | |
2304 | if (p[1] != ':') | |
2305 | { | |
2306 | break; | |
2307 | } | |
2308 | ||
2309 | sublist = NULL; | |
2310 | look_ahead_type = NULL; | |
2311 | length = 0; | |
c5aa993b | 2312 | |
8d749320 | 2313 | new_fnlist = XCNEW (struct next_fnfieldlist); |
b8c9b27d | 2314 | make_cleanup (xfree, new_fnlist); |
c5aa993b | 2315 | |
c906108c SS |
2316 | if ((*pp)[0] == 'o' && (*pp)[1] == 'p' && is_cplus_marker ((*pp)[2])) |
2317 | { | |
2318 | /* This is a completely wierd case. In order to stuff in the | |
2319 | names that might contain colons (the usual name delimiter), | |
2320 | Mike Tiemann defined a different name format which is | |
2321 | signalled if the identifier is "op$". In that case, the | |
2322 | format is "op$::XXXX." where XXXX is the name. This is | |
2323 | used for names like "+" or "=". YUUUUUUUK! FIXME! */ | |
2324 | /* This lets the user type "break operator+". | |
2325 | We could just put in "+" as the name, but that wouldn't | |
2326 | work for "*". */ | |
8343f86c | 2327 | static char opname[32] = "op$"; |
c906108c | 2328 | char *o = opname + 3; |
c5aa993b | 2329 | |
c906108c SS |
2330 | /* Skip past '::'. */ |
2331 | *pp = p + 2; | |
2332 | ||
2333 | STABS_CONTINUE (pp, objfile); | |
2334 | p = *pp; | |
2335 | while (*p != '.') | |
2336 | { | |
2337 | *o++ = *p++; | |
2338 | } | |
2339 | main_fn_name = savestring (opname, o - opname); | |
2340 | /* Skip past '.' */ | |
2341 | *pp = p + 1; | |
2342 | } | |
2343 | else | |
2344 | { | |
2345 | main_fn_name = savestring (*pp, p - *pp); | |
2346 | /* Skip past '::'. */ | |
2347 | *pp = p + 2; | |
2348 | } | |
c5aa993b JM |
2349 | new_fnlist->fn_fieldlist.name = main_fn_name; |
2350 | ||
c906108c SS |
2351 | do |
2352 | { | |
8d749320 | 2353 | new_sublist = XCNEW (struct next_fnfield); |
b8c9b27d | 2354 | make_cleanup (xfree, new_sublist); |
c5aa993b | 2355 | |
c906108c SS |
2356 | /* Check for and handle cretinous dbx symbol name continuation! */ |
2357 | if (look_ahead_type == NULL) | |
2358 | { | |
c378eb4e | 2359 | /* Normal case. */ |
c906108c | 2360 | STABS_CONTINUE (pp, objfile); |
c5aa993b JM |
2361 | |
2362 | new_sublist->fn_field.type = read_type (pp, objfile); | |
c906108c SS |
2363 | if (**pp != ':') |
2364 | { | |
2365 | /* Invalid symtab info for member function. */ | |
2366 | return 0; | |
2367 | } | |
2368 | } | |
2369 | else | |
2370 | { | |
2371 | /* g++ version 1 kludge */ | |
c5aa993b | 2372 | new_sublist->fn_field.type = look_ahead_type; |
c906108c SS |
2373 | look_ahead_type = NULL; |
2374 | } | |
c5aa993b | 2375 | |
c906108c SS |
2376 | (*pp)++; |
2377 | p = *pp; | |
2378 | while (*p != ';') | |
2379 | { | |
2380 | p++; | |
2381 | } | |
c5aa993b | 2382 | |
09e2d7c7 DE |
2383 | /* These are methods, not functions. */ |
2384 | if (TYPE_CODE (new_sublist->fn_field.type) == TYPE_CODE_FUNC) | |
2385 | TYPE_CODE (new_sublist->fn_field.type) = TYPE_CODE_METHOD; | |
2386 | else | |
2387 | gdb_assert (TYPE_CODE (new_sublist->fn_field.type) | |
2388 | == TYPE_CODE_METHOD); | |
c906108c | 2389 | |
09e2d7c7 | 2390 | /* If this is just a stub, then we don't have the real name here. */ |
74a9bb82 | 2391 | if (TYPE_STUB (new_sublist->fn_field.type)) |
c906108c | 2392 | { |
4bfb94b8 | 2393 | if (!TYPE_SELF_TYPE (new_sublist->fn_field.type)) |
09e2d7c7 | 2394 | set_type_self_type (new_sublist->fn_field.type, type); |
c5aa993b | 2395 | new_sublist->fn_field.is_stub = 1; |
c906108c | 2396 | } |
09e2d7c7 | 2397 | |
c5aa993b | 2398 | new_sublist->fn_field.physname = savestring (*pp, p - *pp); |
c906108c | 2399 | *pp = p + 1; |
c5aa993b | 2400 | |
c906108c SS |
2401 | /* Set this member function's visibility fields. */ |
2402 | switch (*(*pp)++) | |
2403 | { | |
c5aa993b JM |
2404 | case VISIBILITY_PRIVATE: |
2405 | new_sublist->fn_field.is_private = 1; | |
2406 | break; | |
2407 | case VISIBILITY_PROTECTED: | |
2408 | new_sublist->fn_field.is_protected = 1; | |
2409 | break; | |
c906108c | 2410 | } |
c5aa993b | 2411 | |
c906108c SS |
2412 | STABS_CONTINUE (pp, objfile); |
2413 | switch (**pp) | |
2414 | { | |
c378eb4e | 2415 | case 'A': /* Normal functions. */ |
c5aa993b JM |
2416 | new_sublist->fn_field.is_const = 0; |
2417 | new_sublist->fn_field.is_volatile = 0; | |
2418 | (*pp)++; | |
2419 | break; | |
c378eb4e | 2420 | case 'B': /* `const' member functions. */ |
c5aa993b JM |
2421 | new_sublist->fn_field.is_const = 1; |
2422 | new_sublist->fn_field.is_volatile = 0; | |
2423 | (*pp)++; | |
2424 | break; | |
c378eb4e | 2425 | case 'C': /* `volatile' member function. */ |
c5aa993b JM |
2426 | new_sublist->fn_field.is_const = 0; |
2427 | new_sublist->fn_field.is_volatile = 1; | |
2428 | (*pp)++; | |
2429 | break; | |
c378eb4e | 2430 | case 'D': /* `const volatile' member function. */ |
c5aa993b JM |
2431 | new_sublist->fn_field.is_const = 1; |
2432 | new_sublist->fn_field.is_volatile = 1; | |
2433 | (*pp)++; | |
2434 | break; | |
3e43a32a | 2435 | case '*': /* File compiled with g++ version 1 -- |
c378eb4e | 2436 | no info. */ |
c5aa993b JM |
2437 | case '?': |
2438 | case '.': | |
2439 | break; | |
2440 | default: | |
b98664d3 | 2441 | complaint (_("const/volatile indicator missing, got '%c'"), |
3e43a32a | 2442 | **pp); |
c5aa993b | 2443 | break; |
c906108c | 2444 | } |
c5aa993b | 2445 | |
c906108c SS |
2446 | switch (*(*pp)++) |
2447 | { | |
c5aa993b | 2448 | case '*': |
c906108c SS |
2449 | { |
2450 | int nbits; | |
c5aa993b | 2451 | /* virtual member function, followed by index. |
c906108c SS |
2452 | The sign bit is set to distinguish pointers-to-methods |
2453 | from virtual function indicies. Since the array is | |
2454 | in words, the quantity must be shifted left by 1 | |
2455 | on 16 bit machine, and by 2 on 32 bit machine, forcing | |
2456 | the sign bit out, and usable as a valid index into | |
2457 | the array. Remove the sign bit here. */ | |
c5aa993b | 2458 | new_sublist->fn_field.voffset = |
94e10a22 | 2459 | (0x7fffffff & read_huge_number (pp, ';', &nbits, 0)) + 2; |
c906108c SS |
2460 | if (nbits != 0) |
2461 | return 0; | |
c5aa993b | 2462 | |
c906108c SS |
2463 | STABS_CONTINUE (pp, objfile); |
2464 | if (**pp == ';' || **pp == '\0') | |
2465 | { | |
2466 | /* Must be g++ version 1. */ | |
c5aa993b | 2467 | new_sublist->fn_field.fcontext = 0; |
c906108c SS |
2468 | } |
2469 | else | |
2470 | { | |
2471 | /* Figure out from whence this virtual function came. | |
2472 | It may belong to virtual function table of | |
2473 | one of its baseclasses. */ | |
2474 | look_ahead_type = read_type (pp, objfile); | |
2475 | if (**pp == ':') | |
2476 | { | |
c378eb4e | 2477 | /* g++ version 1 overloaded methods. */ |
c906108c SS |
2478 | } |
2479 | else | |
2480 | { | |
c5aa993b | 2481 | new_sublist->fn_field.fcontext = look_ahead_type; |
c906108c SS |
2482 | if (**pp != ';') |
2483 | { | |
2484 | return 0; | |
2485 | } | |
2486 | else | |
2487 | { | |
2488 | ++*pp; | |
2489 | } | |
2490 | look_ahead_type = NULL; | |
2491 | } | |
2492 | } | |
2493 | break; | |
2494 | } | |
c5aa993b JM |
2495 | case '?': |
2496 | /* static member function. */ | |
4ea09c10 PS |
2497 | { |
2498 | int slen = strlen (main_fn_name); | |
2499 | ||
2500 | new_sublist->fn_field.voffset = VOFFSET_STATIC; | |
2501 | ||
2502 | /* For static member functions, we can't tell if they | |
2503 | are stubbed, as they are put out as functions, and not as | |
2504 | methods. | |
2505 | GCC v2 emits the fully mangled name if | |
2506 | dbxout.c:flag_minimal_debug is not set, so we have to | |
2507 | detect a fully mangled physname here and set is_stub | |
2508 | accordingly. Fully mangled physnames in v2 start with | |
2509 | the member function name, followed by two underscores. | |
2510 | GCC v3 currently always emits stubbed member functions, | |
2511 | but with fully mangled physnames, which start with _Z. */ | |
2512 | if (!(strncmp (new_sublist->fn_field.physname, | |
2513 | main_fn_name, slen) == 0 | |
2514 | && new_sublist->fn_field.physname[slen] == '_' | |
2515 | && new_sublist->fn_field.physname[slen + 1] == '_')) | |
2516 | { | |
2517 | new_sublist->fn_field.is_stub = 1; | |
2518 | } | |
2519 | break; | |
2520 | } | |
c5aa993b JM |
2521 | |
2522 | default: | |
2523 | /* error */ | |
b98664d3 | 2524 | complaint (_("member function type missing, got '%c'"), |
3e43a32a | 2525 | (*pp)[-1]); |
86a73007 TT |
2526 | /* Normal member function. */ |
2527 | /* Fall through. */ | |
c5aa993b JM |
2528 | |
2529 | case '.': | |
2530 | /* normal member function. */ | |
2531 | new_sublist->fn_field.voffset = 0; | |
2532 | new_sublist->fn_field.fcontext = 0; | |
2533 | break; | |
c906108c | 2534 | } |
c5aa993b JM |
2535 | |
2536 | new_sublist->next = sublist; | |
c906108c SS |
2537 | sublist = new_sublist; |
2538 | length++; | |
2539 | STABS_CONTINUE (pp, objfile); | |
2540 | } | |
2541 | while (**pp != ';' && **pp != '\0'); | |
c5aa993b | 2542 | |
c906108c | 2543 | (*pp)++; |
0c867556 | 2544 | STABS_CONTINUE (pp, objfile); |
c5aa993b | 2545 | |
0c867556 PS |
2546 | /* Skip GCC 3.X member functions which are duplicates of the callable |
2547 | constructor/destructor. */ | |
6cbbcdfe KS |
2548 | if (strcmp_iw (main_fn_name, "__base_ctor ") == 0 |
2549 | || strcmp_iw (main_fn_name, "__base_dtor ") == 0 | |
0c867556 | 2550 | || strcmp (main_fn_name, "__deleting_dtor") == 0) |
c906108c | 2551 | { |
0c867556 | 2552 | xfree (main_fn_name); |
c906108c | 2553 | } |
0c867556 PS |
2554 | else |
2555 | { | |
de17c821 DJ |
2556 | int has_stub = 0; |
2557 | int has_destructor = 0, has_other = 0; | |
2558 | int is_v3 = 0; | |
2559 | struct next_fnfield *tmp_sublist; | |
2560 | ||
2561 | /* Various versions of GCC emit various mostly-useless | |
2562 | strings in the name field for special member functions. | |
2563 | ||
2564 | For stub methods, we need to defer correcting the name | |
2565 | until we are ready to unstub the method, because the current | |
2566 | name string is used by gdb_mangle_name. The only stub methods | |
2567 | of concern here are GNU v2 operators; other methods have their | |
2568 | names correct (see caveat below). | |
2569 | ||
2570 | For non-stub methods, in GNU v3, we have a complete physname. | |
2571 | Therefore we can safely correct the name now. This primarily | |
2572 | affects constructors and destructors, whose name will be | |
2573 | __comp_ctor or __comp_dtor instead of Foo or ~Foo. Cast | |
2574 | operators will also have incorrect names; for instance, | |
2575 | "operator int" will be named "operator i" (i.e. the type is | |
2576 | mangled). | |
2577 | ||
2578 | For non-stub methods in GNU v2, we have no easy way to | |
2579 | know if we have a complete physname or not. For most | |
2580 | methods the result depends on the platform (if CPLUS_MARKER | |
2581 | can be `$' or `.', it will use minimal debug information, or | |
2582 | otherwise the full physname will be included). | |
2583 | ||
2584 | Rather than dealing with this, we take a different approach. | |
2585 | For v3 mangled names, we can use the full physname; for v2, | |
2586 | we use cplus_demangle_opname (which is actually v2 specific), | |
2587 | because the only interesting names are all operators - once again | |
2588 | barring the caveat below. Skip this process if any method in the | |
2589 | group is a stub, to prevent our fouling up the workings of | |
2590 | gdb_mangle_name. | |
2591 | ||
2592 | The caveat: GCC 2.95.x (and earlier?) put constructors and | |
2593 | destructors in the same method group. We need to split this | |
2594 | into two groups, because they should have different names. | |
2595 | So for each method group we check whether it contains both | |
2596 | routines whose physname appears to be a destructor (the physnames | |
2597 | for and destructors are always provided, due to quirks in v2 | |
2598 | mangling) and routines whose physname does not appear to be a | |
2599 | destructor. If so then we break up the list into two halves. | |
2600 | Even if the constructors and destructors aren't in the same group | |
2601 | the destructor will still lack the leading tilde, so that also | |
2602 | needs to be fixed. | |
2603 | ||
2604 | So, to summarize what we expect and handle here: | |
2605 | ||
2606 | Given Given Real Real Action | |
2607 | method name physname physname method name | |
2608 | ||
2609 | __opi [none] __opi__3Foo operator int opname | |
3e43a32a MS |
2610 | [now or later] |
2611 | Foo _._3Foo _._3Foo ~Foo separate and | |
de17c821 DJ |
2612 | rename |
2613 | operator i _ZN3FoocviEv _ZN3FoocviEv operator int demangle | |
2614 | __comp_ctor _ZN3FooC1ERKS_ _ZN3FooC1ERKS_ Foo demangle | |
2615 | */ | |
2616 | ||
2617 | tmp_sublist = sublist; | |
2618 | while (tmp_sublist != NULL) | |
2619 | { | |
2620 | if (tmp_sublist->fn_field.is_stub) | |
2621 | has_stub = 1; | |
2622 | if (tmp_sublist->fn_field.physname[0] == '_' | |
2623 | && tmp_sublist->fn_field.physname[1] == 'Z') | |
2624 | is_v3 = 1; | |
2625 | ||
2626 | if (is_destructor_name (tmp_sublist->fn_field.physname)) | |
2627 | has_destructor++; | |
2628 | else | |
2629 | has_other++; | |
2630 | ||
2631 | tmp_sublist = tmp_sublist->next; | |
2632 | } | |
2633 | ||
2634 | if (has_destructor && has_other) | |
2635 | { | |
2636 | struct next_fnfieldlist *destr_fnlist; | |
2637 | struct next_fnfield *last_sublist; | |
2638 | ||
2639 | /* Create a new fn_fieldlist for the destructors. */ | |
2640 | ||
8d749320 | 2641 | destr_fnlist = XCNEW (struct next_fnfieldlist); |
de17c821 | 2642 | make_cleanup (xfree, destr_fnlist); |
8d749320 | 2643 | |
de17c821 | 2644 | destr_fnlist->fn_fieldlist.name |
48cb83fd JK |
2645 | = obconcat (&objfile->objfile_obstack, "~", |
2646 | new_fnlist->fn_fieldlist.name, (char *) NULL); | |
de17c821 | 2647 | |
8d749320 SM |
2648 | destr_fnlist->fn_fieldlist.fn_fields = |
2649 | XOBNEWVEC (&objfile->objfile_obstack, | |
2650 | struct fn_field, has_destructor); | |
de17c821 DJ |
2651 | memset (destr_fnlist->fn_fieldlist.fn_fields, 0, |
2652 | sizeof (struct fn_field) * has_destructor); | |
2653 | tmp_sublist = sublist; | |
2654 | last_sublist = NULL; | |
2655 | i = 0; | |
2656 | while (tmp_sublist != NULL) | |
2657 | { | |
2658 | if (!is_destructor_name (tmp_sublist->fn_field.physname)) | |
2659 | { | |
2660 | tmp_sublist = tmp_sublist->next; | |
2661 | continue; | |
2662 | } | |
2663 | ||
2664 | destr_fnlist->fn_fieldlist.fn_fields[i++] | |
2665 | = tmp_sublist->fn_field; | |
2666 | if (last_sublist) | |
2667 | last_sublist->next = tmp_sublist->next; | |
2668 | else | |
2669 | sublist = tmp_sublist->next; | |
2670 | last_sublist = tmp_sublist; | |
2671 | tmp_sublist = tmp_sublist->next; | |
2672 | } | |
2673 | ||
2674 | destr_fnlist->fn_fieldlist.length = has_destructor; | |
2675 | destr_fnlist->next = fip->fnlist; | |
2676 | fip->fnlist = destr_fnlist; | |
2677 | nfn_fields++; | |
de17c821 DJ |
2678 | length -= has_destructor; |
2679 | } | |
2680 | else if (is_v3) | |
2681 | { | |
2682 | /* v3 mangling prevents the use of abbreviated physnames, | |
2683 | so we can do this here. There are stubbed methods in v3 | |
2684 | only: | |
2685 | - in -gstabs instead of -gstabs+ | |
2686 | - or for static methods, which are output as a function type | |
2687 | instead of a method type. */ | |
0d5cff50 DE |
2688 | char *new_method_name = |
2689 | stabs_method_name_from_physname (sublist->fn_field.physname); | |
de17c821 | 2690 | |
0d5cff50 DE |
2691 | if (new_method_name != NULL |
2692 | && strcmp (new_method_name, | |
2693 | new_fnlist->fn_fieldlist.name) != 0) | |
2694 | { | |
2695 | new_fnlist->fn_fieldlist.name = new_method_name; | |
2696 | xfree (main_fn_name); | |
2697 | } | |
2698 | else | |
2699 | xfree (new_method_name); | |
de17c821 DJ |
2700 | } |
2701 | else if (has_destructor && new_fnlist->fn_fieldlist.name[0] != '~') | |
2702 | { | |
1754f103 | 2703 | new_fnlist->fn_fieldlist.name = |
0d5cff50 DE |
2704 | obconcat (&objfile->objfile_obstack, |
2705 | "~", main_fn_name, (char *)NULL); | |
de17c821 DJ |
2706 | xfree (main_fn_name); |
2707 | } | |
2708 | else if (!has_stub) | |
2709 | { | |
2710 | char dem_opname[256]; | |
2711 | int ret; | |
433759f7 | 2712 | |
de17c821 DJ |
2713 | ret = cplus_demangle_opname (new_fnlist->fn_fieldlist.name, |
2714 | dem_opname, DMGL_ANSI); | |
2715 | if (!ret) | |
2716 | ret = cplus_demangle_opname (new_fnlist->fn_fieldlist.name, | |
2717 | dem_opname, 0); | |
2718 | if (ret) | |
2719 | new_fnlist->fn_fieldlist.name | |
224c3ddb SM |
2720 | = ((const char *) |
2721 | obstack_copy0 (&objfile->objfile_obstack, dem_opname, | |
2722 | strlen (dem_opname))); | |
0d5cff50 | 2723 | xfree (main_fn_name); |
de17c821 DJ |
2724 | } |
2725 | ||
e39db4db SM |
2726 | new_fnlist->fn_fieldlist.fn_fields |
2727 | = OBSTACK_CALLOC (&objfile->objfile_obstack, length, fn_field); | |
0c867556 PS |
2728 | for (i = length; (i--, sublist); sublist = sublist->next) |
2729 | { | |
2730 | new_fnlist->fn_fieldlist.fn_fields[i] = sublist->fn_field; | |
2731 | } | |
c5aa993b | 2732 | |
0c867556 PS |
2733 | new_fnlist->fn_fieldlist.length = length; |
2734 | new_fnlist->next = fip->fnlist; | |
2735 | fip->fnlist = new_fnlist; | |
2736 | nfn_fields++; | |
0c867556 | 2737 | } |
c906108c SS |
2738 | } |
2739 | ||
2740 | if (nfn_fields) | |
2741 | { | |
2742 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
2743 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
2744 | TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * nfn_fields); | |
2745 | memset (TYPE_FN_FIELDLISTS (type), 0, | |
2746 | sizeof (struct fn_fieldlist) * nfn_fields); | |
2747 | TYPE_NFN_FIELDS (type) = nfn_fields; | |
c906108c SS |
2748 | } |
2749 | ||
2750 | return 1; | |
2751 | } | |
2752 | ||
2753 | /* Special GNU C++ name. | |
2754 | ||
2755 | Returns 1 for success, 0 for failure. "failure" means that we can't | |
2756 | keep parsing and it's time for error_type(). */ | |
2757 | ||
2758 | static int | |
a121b7c1 | 2759 | read_cpp_abbrev (struct field_info *fip, const char **pp, struct type *type, |
fba45db2 | 2760 | struct objfile *objfile) |
c906108c | 2761 | { |
a121b7c1 | 2762 | const char *p; |
0d5cff50 | 2763 | const char *name; |
c906108c SS |
2764 | char cpp_abbrev; |
2765 | struct type *context; | |
2766 | ||
2767 | p = *pp; | |
2768 | if (*++p == 'v') | |
2769 | { | |
2770 | name = NULL; | |
2771 | cpp_abbrev = *++p; | |
2772 | ||
2773 | *pp = p + 1; | |
2774 | ||
2775 | /* At this point, *pp points to something like "22:23=*22...", | |
c5aa993b JM |
2776 | where the type number before the ':' is the "context" and |
2777 | everything after is a regular type definition. Lookup the | |
c378eb4e | 2778 | type, find it's name, and construct the field name. */ |
c906108c SS |
2779 | |
2780 | context = read_type (pp, objfile); | |
2781 | ||
2782 | switch (cpp_abbrev) | |
2783 | { | |
c5aa993b | 2784 | case 'f': /* $vf -- a virtual function table pointer */ |
a737d952 | 2785 | name = TYPE_NAME (context); |
c2bd2ed9 | 2786 | if (name == NULL) |
433759f7 MS |
2787 | { |
2788 | name = ""; | |
2789 | } | |
48cb83fd JK |
2790 | fip->list->field.name = obconcat (&objfile->objfile_obstack, |
2791 | vptr_name, name, (char *) NULL); | |
c5aa993b | 2792 | break; |
c906108c | 2793 | |
c5aa993b | 2794 | case 'b': /* $vb -- a virtual bsomethingorother */ |
a737d952 | 2795 | name = TYPE_NAME (context); |
c5aa993b JM |
2796 | if (name == NULL) |
2797 | { | |
b98664d3 | 2798 | complaint (_("C++ abbreviated type name " |
3e43a32a | 2799 | "unknown at symtab pos %d"), |
23136709 | 2800 | symnum); |
c5aa993b JM |
2801 | name = "FOO"; |
2802 | } | |
48cb83fd JK |
2803 | fip->list->field.name = obconcat (&objfile->objfile_obstack, vb_name, |
2804 | name, (char *) NULL); | |
c5aa993b | 2805 | break; |
c906108c | 2806 | |
c5aa993b | 2807 | default: |
23136709 | 2808 | invalid_cpp_abbrev_complaint (*pp); |
48cb83fd JK |
2809 | fip->list->field.name = obconcat (&objfile->objfile_obstack, |
2810 | "INVALID_CPLUSPLUS_ABBREV", | |
2811 | (char *) NULL); | |
c5aa993b | 2812 | break; |
c906108c SS |
2813 | } |
2814 | ||
2815 | /* At this point, *pp points to the ':'. Skip it and read the | |
c378eb4e | 2816 | field type. */ |
c906108c SS |
2817 | |
2818 | p = ++(*pp); | |
2819 | if (p[-1] != ':') | |
2820 | { | |
23136709 | 2821 | invalid_cpp_abbrev_complaint (*pp); |
c906108c SS |
2822 | return 0; |
2823 | } | |
2824 | fip->list->field.type = read_type (pp, objfile); | |
2825 | if (**pp == ',') | |
c5aa993b | 2826 | (*pp)++; /* Skip the comma. */ |
c906108c SS |
2827 | else |
2828 | return 0; | |
2829 | ||
2830 | { | |
2831 | int nbits; | |
433759f7 | 2832 | |
f41f5e61 PA |
2833 | SET_FIELD_BITPOS (fip->list->field, |
2834 | read_huge_number (pp, ';', &nbits, 0)); | |
c906108c SS |
2835 | if (nbits != 0) |
2836 | return 0; | |
2837 | } | |
2838 | /* This field is unpacked. */ | |
2839 | FIELD_BITSIZE (fip->list->field) = 0; | |
2840 | fip->list->visibility = VISIBILITY_PRIVATE; | |
2841 | } | |
2842 | else | |
2843 | { | |
23136709 | 2844 | invalid_cpp_abbrev_complaint (*pp); |
c906108c | 2845 | /* We have no idea what syntax an unrecognized abbrev would have, so |
c5aa993b JM |
2846 | better return 0. If we returned 1, we would need to at least advance |
2847 | *pp to avoid an infinite loop. */ | |
c906108c SS |
2848 | return 0; |
2849 | } | |
2850 | return 1; | |
2851 | } | |
2852 | ||
2853 | static void | |
a121b7c1 | 2854 | read_one_struct_field (struct field_info *fip, const char **pp, const char *p, |
fba45db2 | 2855 | struct type *type, struct objfile *objfile) |
c906108c | 2856 | { |
5e2b427d UW |
2857 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
2858 | ||
224c3ddb SM |
2859 | fip->list->field.name |
2860 | = (const char *) obstack_copy0 (&objfile->objfile_obstack, *pp, p - *pp); | |
c906108c SS |
2861 | *pp = p + 1; |
2862 | ||
c378eb4e | 2863 | /* This means we have a visibility for a field coming. */ |
c906108c SS |
2864 | if (**pp == '/') |
2865 | { | |
2866 | (*pp)++; | |
c5aa993b | 2867 | fip->list->visibility = *(*pp)++; |
c906108c SS |
2868 | } |
2869 | else | |
2870 | { | |
2871 | /* normal dbx-style format, no explicit visibility */ | |
c5aa993b | 2872 | fip->list->visibility = VISIBILITY_PUBLIC; |
c906108c SS |
2873 | } |
2874 | ||
c5aa993b | 2875 | fip->list->field.type = read_type (pp, objfile); |
c906108c SS |
2876 | if (**pp == ':') |
2877 | { | |
2878 | p = ++(*pp); | |
2879 | #if 0 | |
c378eb4e | 2880 | /* Possible future hook for nested types. */ |
c906108c SS |
2881 | if (**pp == '!') |
2882 | { | |
c5aa993b | 2883 | fip->list->field.bitpos = (long) -2; /* nested type */ |
c906108c SS |
2884 | p = ++(*pp); |
2885 | } | |
c5aa993b JM |
2886 | else |
2887 | ...; | |
c906108c | 2888 | #endif |
c5aa993b | 2889 | while (*p != ';') |
c906108c SS |
2890 | { |
2891 | p++; | |
2892 | } | |
2893 | /* Static class member. */ | |
2894 | SET_FIELD_PHYSNAME (fip->list->field, savestring (*pp, p - *pp)); | |
2895 | *pp = p + 1; | |
2896 | return; | |
2897 | } | |
2898 | else if (**pp != ',') | |
2899 | { | |
2900 | /* Bad structure-type format. */ | |
23136709 | 2901 | stabs_general_complaint ("bad structure-type format"); |
c906108c SS |
2902 | return; |
2903 | } | |
2904 | ||
2905 | (*pp)++; /* Skip the comma. */ | |
2906 | ||
2907 | { | |
2908 | int nbits; | |
433759f7 | 2909 | |
f41f5e61 PA |
2910 | SET_FIELD_BITPOS (fip->list->field, |
2911 | read_huge_number (pp, ',', &nbits, 0)); | |
c906108c SS |
2912 | if (nbits != 0) |
2913 | { | |
23136709 | 2914 | stabs_general_complaint ("bad structure-type format"); |
c906108c SS |
2915 | return; |
2916 | } | |
94e10a22 | 2917 | FIELD_BITSIZE (fip->list->field) = read_huge_number (pp, ';', &nbits, 0); |
c906108c SS |
2918 | if (nbits != 0) |
2919 | { | |
23136709 | 2920 | stabs_general_complaint ("bad structure-type format"); |
c906108c SS |
2921 | return; |
2922 | } | |
2923 | } | |
2924 | ||
2925 | if (FIELD_BITPOS (fip->list->field) == 0 | |
2926 | && FIELD_BITSIZE (fip->list->field) == 0) | |
2927 | { | |
2928 | /* This can happen in two cases: (1) at least for gcc 2.4.5 or so, | |
c5aa993b JM |
2929 | it is a field which has been optimized out. The correct stab for |
2930 | this case is to use VISIBILITY_IGNORE, but that is a recent | |
2931 | invention. (2) It is a 0-size array. For example | |
e2e0b3e5 | 2932 | union { int num; char str[0]; } foo. Printing _("<no value>" for |
c5aa993b JM |
2933 | str in "p foo" is OK, since foo.str (and thus foo.str[3]) |
2934 | will continue to work, and a 0-size array as a whole doesn't | |
2935 | have any contents to print. | |
2936 | ||
2937 | I suspect this probably could also happen with gcc -gstabs (not | |
2938 | -gstabs+) for static fields, and perhaps other C++ extensions. | |
2939 | Hopefully few people use -gstabs with gdb, since it is intended | |
2940 | for dbx compatibility. */ | |
c906108c SS |
2941 | |
2942 | /* Ignore this field. */ | |
c5aa993b | 2943 | fip->list->visibility = VISIBILITY_IGNORE; |
c906108c SS |
2944 | } |
2945 | else | |
2946 | { | |
2947 | /* Detect an unpacked field and mark it as such. | |
c5aa993b JM |
2948 | dbx gives a bit size for all fields. |
2949 | Note that forward refs cannot be packed, | |
2950 | and treat enums as if they had the width of ints. */ | |
c906108c SS |
2951 | |
2952 | struct type *field_type = check_typedef (FIELD_TYPE (fip->list->field)); | |
2953 | ||
2954 | if (TYPE_CODE (field_type) != TYPE_CODE_INT | |
2955 | && TYPE_CODE (field_type) != TYPE_CODE_RANGE | |
2956 | && TYPE_CODE (field_type) != TYPE_CODE_BOOL | |
2957 | && TYPE_CODE (field_type) != TYPE_CODE_ENUM) | |
2958 | { | |
2959 | FIELD_BITSIZE (fip->list->field) = 0; | |
2960 | } | |
c5aa993b | 2961 | if ((FIELD_BITSIZE (fip->list->field) |
c906108c SS |
2962 | == TARGET_CHAR_BIT * TYPE_LENGTH (field_type) |
2963 | || (TYPE_CODE (field_type) == TYPE_CODE_ENUM | |
9a76efb6 | 2964 | && FIELD_BITSIZE (fip->list->field) |
5e2b427d | 2965 | == gdbarch_int_bit (gdbarch)) |
c5aa993b | 2966 | ) |
c906108c SS |
2967 | && |
2968 | FIELD_BITPOS (fip->list->field) % 8 == 0) | |
2969 | { | |
2970 | FIELD_BITSIZE (fip->list->field) = 0; | |
2971 | } | |
2972 | } | |
2973 | } | |
2974 | ||
2975 | ||
2976 | /* Read struct or class data fields. They have the form: | |
2977 | ||
c5aa993b | 2978 | NAME : [VISIBILITY] TYPENUM , BITPOS , BITSIZE ; |
c906108c SS |
2979 | |
2980 | At the end, we see a semicolon instead of a field. | |
2981 | ||
2982 | In C++, this may wind up being NAME:?TYPENUM:PHYSNAME; for | |
2983 | a static field. | |
2984 | ||
2985 | The optional VISIBILITY is one of: | |
2986 | ||
c5aa993b JM |
2987 | '/0' (VISIBILITY_PRIVATE) |
2988 | '/1' (VISIBILITY_PROTECTED) | |
2989 | '/2' (VISIBILITY_PUBLIC) | |
2990 | '/9' (VISIBILITY_IGNORE) | |
c906108c SS |
2991 | |
2992 | or nothing, for C style fields with public visibility. | |
2993 | ||
2994 | Returns 1 for success, 0 for failure. */ | |
2995 | ||
2996 | static int | |
a121b7c1 | 2997 | read_struct_fields (struct field_info *fip, const char **pp, struct type *type, |
fba45db2 | 2998 | struct objfile *objfile) |
c906108c | 2999 | { |
a121b7c1 | 3000 | const char *p; |
fe978cb0 | 3001 | struct nextfield *newobj; |
c906108c SS |
3002 | |
3003 | /* We better set p right now, in case there are no fields at all... */ | |
3004 | ||
3005 | p = *pp; | |
3006 | ||
3007 | /* Read each data member type until we find the terminating ';' at the end of | |
3008 | the data member list, or break for some other reason such as finding the | |
c378eb4e | 3009 | start of the member function list. */ |
fedbd091 | 3010 | /* Stab string for structure/union does not end with two ';' in |
c378eb4e | 3011 | SUN C compiler 5.3 i.e. F6U2, hence check for end of string. */ |
c906108c | 3012 | |
fedbd091 | 3013 | while (**pp != ';' && **pp != '\0') |
c906108c | 3014 | { |
c906108c SS |
3015 | STABS_CONTINUE (pp, objfile); |
3016 | /* Get space to record the next field's data. */ | |
8d749320 | 3017 | newobj = XCNEW (struct nextfield); |
fe978cb0 | 3018 | make_cleanup (xfree, newobj); |
8d749320 | 3019 | |
fe978cb0 PA |
3020 | newobj->next = fip->list; |
3021 | fip->list = newobj; | |
c906108c SS |
3022 | |
3023 | /* Get the field name. */ | |
3024 | p = *pp; | |
3025 | ||
3026 | /* If is starts with CPLUS_MARKER it is a special abbreviation, | |
c5aa993b JM |
3027 | unless the CPLUS_MARKER is followed by an underscore, in |
3028 | which case it is just the name of an anonymous type, which we | |
3029 | should handle like any other type name. */ | |
c906108c SS |
3030 | |
3031 | if (is_cplus_marker (p[0]) && p[1] != '_') | |
3032 | { | |
3033 | if (!read_cpp_abbrev (fip, pp, type, objfile)) | |
3034 | return 0; | |
3035 | continue; | |
3036 | } | |
3037 | ||
3038 | /* Look for the ':' that separates the field name from the field | |
c5aa993b JM |
3039 | values. Data members are delimited by a single ':', while member |
3040 | functions are delimited by a pair of ':'s. When we hit the member | |
c378eb4e | 3041 | functions (if any), terminate scan loop and return. */ |
c906108c | 3042 | |
c5aa993b | 3043 | while (*p != ':' && *p != '\0') |
c906108c SS |
3044 | { |
3045 | p++; | |
3046 | } | |
3047 | if (*p == '\0') | |
3048 | return 0; | |
3049 | ||
3050 | /* Check to see if we have hit the member functions yet. */ | |
3051 | if (p[1] == ':') | |
3052 | { | |
3053 | break; | |
3054 | } | |
3055 | read_one_struct_field (fip, pp, p, type, objfile); | |
3056 | } | |
3057 | if (p[0] == ':' && p[1] == ':') | |
3058 | { | |
1b831c93 AC |
3059 | /* (the deleted) chill the list of fields: the last entry (at |
3060 | the head) is a partially constructed entry which we now | |
c378eb4e | 3061 | scrub. */ |
c5aa993b | 3062 | fip->list = fip->list->next; |
c906108c SS |
3063 | } |
3064 | return 1; | |
3065 | } | |
9846de1b | 3066 | /* *INDENT-OFF* */ |
c906108c SS |
3067 | /* The stabs for C++ derived classes contain baseclass information which |
3068 | is marked by a '!' character after the total size. This function is | |
3069 | called when we encounter the baseclass marker, and slurps up all the | |
3070 | baseclass information. | |
3071 | ||
3072 | Immediately following the '!' marker is the number of base classes that | |
3073 | the class is derived from, followed by information for each base class. | |
3074 | For each base class, there are two visibility specifiers, a bit offset | |
3075 | to the base class information within the derived class, a reference to | |
3076 | the type for the base class, and a terminating semicolon. | |
3077 | ||
3078 | A typical example, with two base classes, would be "!2,020,19;0264,21;". | |
3079 | ^^ ^ ^ ^ ^ ^ ^ | |
3080 | Baseclass information marker __________________|| | | | | | | | |
3081 | Number of baseclasses __________________________| | | | | | | | |
3082 | Visibility specifiers (2) ________________________| | | | | | | |
3083 | Offset in bits from start of class _________________| | | | | | |
3084 | Type number for base class ___________________________| | | | | |
3085 | Visibility specifiers (2) _______________________________| | | | |
3086 | Offset in bits from start of class ________________________| | | |
3087 | Type number of base class ____________________________________| | |
3088 | ||
3089 | Return 1 for success, 0 for (error-type-inducing) failure. */ | |
9846de1b | 3090 | /* *INDENT-ON* */ |
c906108c | 3091 | |
c5aa993b JM |
3092 | |
3093 | ||
c906108c | 3094 | static int |
a121b7c1 | 3095 | read_baseclasses (struct field_info *fip, const char **pp, struct type *type, |
fba45db2 | 3096 | struct objfile *objfile) |
c906108c SS |
3097 | { |
3098 | int i; | |
fe978cb0 | 3099 | struct nextfield *newobj; |
c906108c SS |
3100 | |
3101 | if (**pp != '!') | |
3102 | { | |
3103 | return 1; | |
3104 | } | |
3105 | else | |
3106 | { | |
c378eb4e | 3107 | /* Skip the '!' baseclass information marker. */ |
c906108c SS |
3108 | (*pp)++; |
3109 | } | |
3110 | ||
3111 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
3112 | { | |
3113 | int nbits; | |
433759f7 | 3114 | |
94e10a22 | 3115 | TYPE_N_BASECLASSES (type) = read_huge_number (pp, ',', &nbits, 0); |
c906108c SS |
3116 | if (nbits != 0) |
3117 | return 0; | |
3118 | } | |
3119 | ||
3120 | #if 0 | |
3121 | /* Some stupid compilers have trouble with the following, so break | |
3122 | it up into simpler expressions. */ | |
3123 | TYPE_FIELD_VIRTUAL_BITS (type) = (B_TYPE *) | |
3124 | TYPE_ALLOC (type, B_BYTES (TYPE_N_BASECLASSES (type))); | |
3125 | #else | |
3126 | { | |
3127 | int num_bytes = B_BYTES (TYPE_N_BASECLASSES (type)); | |
3128 | char *pointer; | |
3129 | ||
3130 | pointer = (char *) TYPE_ALLOC (type, num_bytes); | |
3131 | TYPE_FIELD_VIRTUAL_BITS (type) = (B_TYPE *) pointer; | |
3132 | } | |
3133 | #endif /* 0 */ | |
3134 | ||
3135 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), TYPE_N_BASECLASSES (type)); | |
3136 | ||
3137 | for (i = 0; i < TYPE_N_BASECLASSES (type); i++) | |
3138 | { | |
8d749320 | 3139 | newobj = XCNEW (struct nextfield); |
fe978cb0 | 3140 | make_cleanup (xfree, newobj); |
8d749320 | 3141 | |
fe978cb0 PA |
3142 | newobj->next = fip->list; |
3143 | fip->list = newobj; | |
3144 | FIELD_BITSIZE (newobj->field) = 0; /* This should be an unpacked | |
c378eb4e | 3145 | field! */ |
c906108c SS |
3146 | |
3147 | STABS_CONTINUE (pp, objfile); | |
3148 | switch (**pp) | |
3149 | { | |
c5aa993b | 3150 | case '0': |
c378eb4e | 3151 | /* Nothing to do. */ |
c5aa993b JM |
3152 | break; |
3153 | case '1': | |
3154 | SET_TYPE_FIELD_VIRTUAL (type, i); | |
3155 | break; | |
3156 | default: | |
3157 | /* Unknown character. Complain and treat it as non-virtual. */ | |
3158 | { | |
b98664d3 | 3159 | complaint (_("Unknown virtual character `%c' for baseclass"), |
3e43a32a | 3160 | **pp); |
c5aa993b | 3161 | } |
c906108c SS |
3162 | } |
3163 | ++(*pp); | |
3164 | ||
fe978cb0 PA |
3165 | newobj->visibility = *(*pp)++; |
3166 | switch (newobj->visibility) | |
c906108c | 3167 | { |
c5aa993b JM |
3168 | case VISIBILITY_PRIVATE: |
3169 | case VISIBILITY_PROTECTED: | |
3170 | case VISIBILITY_PUBLIC: | |
3171 | break; | |
3172 | default: | |
3173 | /* Bad visibility format. Complain and treat it as | |
3174 | public. */ | |
3175 | { | |
b98664d3 | 3176 | complaint (_("Unknown visibility `%c' for baseclass"), |
fe978cb0 PA |
3177 | newobj->visibility); |
3178 | newobj->visibility = VISIBILITY_PUBLIC; | |
c5aa993b | 3179 | } |
c906108c SS |
3180 | } |
3181 | ||
3182 | { | |
3183 | int nbits; | |
c5aa993b | 3184 | |
c906108c SS |
3185 | /* The remaining value is the bit offset of the portion of the object |
3186 | corresponding to this baseclass. Always zero in the absence of | |
3187 | multiple inheritance. */ | |
3188 | ||
fe978cb0 | 3189 | SET_FIELD_BITPOS (newobj->field, read_huge_number (pp, ',', &nbits, 0)); |
c906108c SS |
3190 | if (nbits != 0) |
3191 | return 0; | |
3192 | } | |
3193 | ||
3194 | /* The last piece of baseclass information is the type of the | |
c5aa993b | 3195 | base class. Read it, and remember it's type name as this |
c378eb4e | 3196 | field's name. */ |
c906108c | 3197 | |
fe978cb0 | 3198 | newobj->field.type = read_type (pp, objfile); |
a737d952 | 3199 | newobj->field.name = TYPE_NAME (newobj->field.type); |
c906108c | 3200 | |
c378eb4e | 3201 | /* Skip trailing ';' and bump count of number of fields seen. */ |
c906108c SS |
3202 | if (**pp == ';') |
3203 | (*pp)++; | |
3204 | else | |
3205 | return 0; | |
3206 | } | |
3207 | return 1; | |
3208 | } | |
3209 | ||
3210 | /* The tail end of stabs for C++ classes that contain a virtual function | |
3211 | pointer contains a tilde, a %, and a type number. | |
3212 | The type number refers to the base class (possibly this class itself) which | |
3213 | contains the vtable pointer for the current class. | |
3214 | ||
3215 | This function is called when we have parsed all the method declarations, | |
3216 | so we can look for the vptr base class info. */ | |
3217 | ||
3218 | static int | |
a121b7c1 | 3219 | read_tilde_fields (struct field_info *fip, const char **pp, struct type *type, |
fba45db2 | 3220 | struct objfile *objfile) |
c906108c | 3221 | { |
a121b7c1 | 3222 | const char *p; |
c906108c SS |
3223 | |
3224 | STABS_CONTINUE (pp, objfile); | |
3225 | ||
c378eb4e | 3226 | /* If we are positioned at a ';', then skip it. */ |
c906108c SS |
3227 | if (**pp == ';') |
3228 | { | |
3229 | (*pp)++; | |
3230 | } | |
3231 | ||
3232 | if (**pp == '~') | |
3233 | { | |
3234 | (*pp)++; | |
3235 | ||
3236 | if (**pp == '=' || **pp == '+' || **pp == '-') | |
3237 | { | |
3238 | /* Obsolete flags that used to indicate the presence | |
c378eb4e | 3239 | of constructors and/or destructors. */ |
c906108c SS |
3240 | (*pp)++; |
3241 | } | |
3242 | ||
3243 | /* Read either a '%' or the final ';'. */ | |
3244 | if (*(*pp)++ == '%') | |
3245 | { | |
3246 | /* The next number is the type number of the base class | |
3247 | (possibly our own class) which supplies the vtable for | |
3248 | this class. Parse it out, and search that class to find | |
3249 | its vtable pointer, and install those into TYPE_VPTR_BASETYPE | |
3250 | and TYPE_VPTR_FIELDNO. */ | |
3251 | ||
3252 | struct type *t; | |
3253 | int i; | |
3254 | ||
3255 | t = read_type (pp, objfile); | |
3256 | p = (*pp)++; | |
3257 | while (*p != '\0' && *p != ';') | |
3258 | { | |
3259 | p++; | |
3260 | } | |
3261 | if (*p == '\0') | |
3262 | { | |
3263 | /* Premature end of symbol. */ | |
3264 | return 0; | |
3265 | } | |
c5aa993b | 3266 | |
ae6ae975 | 3267 | set_type_vptr_basetype (type, t); |
c378eb4e | 3268 | if (type == t) /* Our own class provides vtbl ptr. */ |
c906108c SS |
3269 | { |
3270 | for (i = TYPE_NFIELDS (t) - 1; | |
3271 | i >= TYPE_N_BASECLASSES (t); | |
3272 | --i) | |
3273 | { | |
0d5cff50 | 3274 | const char *name = TYPE_FIELD_NAME (t, i); |
433759f7 | 3275 | |
8343f86c | 3276 | if (!strncmp (name, vptr_name, sizeof (vptr_name) - 2) |
74451869 | 3277 | && is_cplus_marker (name[sizeof (vptr_name) - 2])) |
c906108c | 3278 | { |
ae6ae975 | 3279 | set_type_vptr_fieldno (type, i); |
c906108c SS |
3280 | goto gotit; |
3281 | } | |
3282 | } | |
3283 | /* Virtual function table field not found. */ | |
b98664d3 | 3284 | complaint (_("virtual function table pointer " |
3e43a32a | 3285 | "not found when defining class `%s'"), |
23136709 | 3286 | TYPE_NAME (type)); |
c906108c SS |
3287 | return 0; |
3288 | } | |
3289 | else | |
3290 | { | |
ae6ae975 | 3291 | set_type_vptr_fieldno (type, TYPE_VPTR_FIELDNO (t)); |
c906108c SS |
3292 | } |
3293 | ||
c5aa993b | 3294 | gotit: |
c906108c SS |
3295 | *pp = p + 1; |
3296 | } | |
3297 | } | |
3298 | return 1; | |
3299 | } | |
3300 | ||
3301 | static int | |
aa1ee363 | 3302 | attach_fn_fields_to_type (struct field_info *fip, struct type *type) |
c906108c | 3303 | { |
52f0bd74 | 3304 | int n; |
c906108c SS |
3305 | |
3306 | for (n = TYPE_NFN_FIELDS (type); | |
c5aa993b JM |
3307 | fip->fnlist != NULL; |
3308 | fip->fnlist = fip->fnlist->next) | |
c906108c | 3309 | { |
c378eb4e | 3310 | --n; /* Circumvent Sun3 compiler bug. */ |
c5aa993b | 3311 | TYPE_FN_FIELDLISTS (type)[n] = fip->fnlist->fn_fieldlist; |
c906108c SS |
3312 | } |
3313 | return 1; | |
3314 | } | |
3315 | ||
c906108c SS |
3316 | /* Create the vector of fields, and record how big it is. |
3317 | We need this info to record proper virtual function table information | |
3318 | for this class's virtual functions. */ | |
3319 | ||
3320 | static int | |
aa1ee363 | 3321 | attach_fields_to_type (struct field_info *fip, struct type *type, |
fba45db2 | 3322 | struct objfile *objfile) |
c906108c | 3323 | { |
52f0bd74 AC |
3324 | int nfields = 0; |
3325 | int non_public_fields = 0; | |
3326 | struct nextfield *scan; | |
c906108c SS |
3327 | |
3328 | /* Count up the number of fields that we have, as well as taking note of | |
3329 | whether or not there are any non-public fields, which requires us to | |
3330 | allocate and build the private_field_bits and protected_field_bits | |
c378eb4e | 3331 | bitfields. */ |
c906108c | 3332 | |
c5aa993b | 3333 | for (scan = fip->list; scan != NULL; scan = scan->next) |
c906108c SS |
3334 | { |
3335 | nfields++; | |
c5aa993b | 3336 | if (scan->visibility != VISIBILITY_PUBLIC) |
c906108c SS |
3337 | { |
3338 | non_public_fields++; | |
3339 | } | |
3340 | } | |
3341 | ||
3342 | /* Now we know how many fields there are, and whether or not there are any | |
3343 | non-public fields. Record the field count, allocate space for the | |
c378eb4e | 3344 | array of fields, and create blank visibility bitfields if necessary. */ |
c906108c SS |
3345 | |
3346 | TYPE_NFIELDS (type) = nfields; | |
3347 | TYPE_FIELDS (type) = (struct field *) | |
3348 | TYPE_ALLOC (type, sizeof (struct field) * nfields); | |
3349 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields); | |
3350 | ||
3351 | if (non_public_fields) | |
3352 | { | |
3353 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
3354 | ||
3355 | TYPE_FIELD_PRIVATE_BITS (type) = | |
3356 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
3357 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
3358 | ||
3359 | TYPE_FIELD_PROTECTED_BITS (type) = | |
3360 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
3361 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
3362 | ||
3363 | TYPE_FIELD_IGNORE_BITS (type) = | |
3364 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
3365 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
3366 | } | |
3367 | ||
c378eb4e MS |
3368 | /* Copy the saved-up fields into the field vector. Start from the |
3369 | head of the list, adding to the tail of the field array, so that | |
3370 | they end up in the same order in the array in which they were | |
3371 | added to the list. */ | |
c906108c SS |
3372 | |
3373 | while (nfields-- > 0) | |
3374 | { | |
c5aa993b JM |
3375 | TYPE_FIELD (type, nfields) = fip->list->field; |
3376 | switch (fip->list->visibility) | |
c906108c | 3377 | { |
c5aa993b JM |
3378 | case VISIBILITY_PRIVATE: |
3379 | SET_TYPE_FIELD_PRIVATE (type, nfields); | |
3380 | break; | |
c906108c | 3381 | |
c5aa993b JM |
3382 | case VISIBILITY_PROTECTED: |
3383 | SET_TYPE_FIELD_PROTECTED (type, nfields); | |
3384 | break; | |
c906108c | 3385 | |
c5aa993b JM |
3386 | case VISIBILITY_IGNORE: |
3387 | SET_TYPE_FIELD_IGNORE (type, nfields); | |
3388 | break; | |
c906108c | 3389 | |
c5aa993b JM |
3390 | case VISIBILITY_PUBLIC: |
3391 | break; | |
c906108c | 3392 | |
c5aa993b JM |
3393 | default: |
3394 | /* Unknown visibility. Complain and treat it as public. */ | |
3395 | { | |
b98664d3 | 3396 | complaint (_("Unknown visibility `%c' for field"), |
23136709 | 3397 | fip->list->visibility); |
c5aa993b JM |
3398 | } |
3399 | break; | |
c906108c | 3400 | } |
c5aa993b | 3401 | fip->list = fip->list->next; |
c906108c SS |
3402 | } |
3403 | return 1; | |
3404 | } | |
3405 | ||
2ae1c2d2 | 3406 | |
2ae1c2d2 JB |
3407 | /* Complain that the compiler has emitted more than one definition for the |
3408 | structure type TYPE. */ | |
3409 | static void | |
3410 | complain_about_struct_wipeout (struct type *type) | |
3411 | { | |
0d5cff50 DE |
3412 | const char *name = ""; |
3413 | const char *kind = ""; | |
2ae1c2d2 | 3414 | |
e86ca25f | 3415 | if (TYPE_NAME (type)) |
2ae1c2d2 | 3416 | { |
e86ca25f | 3417 | name = TYPE_NAME (type); |
2ae1c2d2 JB |
3418 | switch (TYPE_CODE (type)) |
3419 | { | |
3420 | case TYPE_CODE_STRUCT: kind = "struct "; break; | |
3421 | case TYPE_CODE_UNION: kind = "union "; break; | |
3422 | case TYPE_CODE_ENUM: kind = "enum "; break; | |
3423 | default: kind = ""; | |
3424 | } | |
3425 | } | |
2ae1c2d2 JB |
3426 | else |
3427 | { | |
3428 | name = "<unknown>"; | |
3429 | kind = ""; | |
3430 | } | |
3431 | ||
b98664d3 | 3432 | complaint (_("struct/union type gets multiply defined: %s%s"), kind, name); |
2ae1c2d2 JB |
3433 | } |
3434 | ||
621791b8 PM |
3435 | /* Set the length for all variants of a same main_type, which are |
3436 | connected in the closed chain. | |
3437 | ||
3438 | This is something that needs to be done when a type is defined *after* | |
3439 | some cross references to this type have already been read. Consider | |
3440 | for instance the following scenario where we have the following two | |
3441 | stabs entries: | |
3442 | ||
3443 | .stabs "t:p(0,21)=*(0,22)=k(0,23)=xsdummy:",160,0,28,-24 | |
3444 | .stabs "dummy:T(0,23)=s16x:(0,1),0,3[...]" | |
3445 | ||
3446 | A stubbed version of type dummy is created while processing the first | |
3447 | stabs entry. The length of that type is initially set to zero, since | |
3448 | it is unknown at this point. Also, a "constant" variation of type | |
3449 | "dummy" is created as well (this is the "(0,22)=k(0,23)" section of | |
3450 | the stabs line). | |
3451 | ||
3452 | The second stabs entry allows us to replace the stubbed definition | |
3453 | with the real definition. However, we still need to adjust the length | |
3454 | of the "constant" variation of that type, as its length was left | |
3455 | untouched during the main type replacement... */ | |
3456 | ||
3457 | static void | |
9e69f3b6 | 3458 | set_length_in_type_chain (struct type *type) |
621791b8 PM |
3459 | { |
3460 | struct type *ntype = TYPE_CHAIN (type); | |
3461 | ||
3462 | while (ntype != type) | |
3463 | { | |
3464 | if (TYPE_LENGTH(ntype) == 0) | |
3465 | TYPE_LENGTH (ntype) = TYPE_LENGTH (type); | |
3466 | else | |
3467 | complain_about_struct_wipeout (ntype); | |
3468 | ntype = TYPE_CHAIN (ntype); | |
3469 | } | |
3470 | } | |
2ae1c2d2 | 3471 | |
c906108c SS |
3472 | /* Read the description of a structure (or union type) and return an object |
3473 | describing the type. | |
3474 | ||
3475 | PP points to a character pointer that points to the next unconsumed token | |
b021a221 | 3476 | in the stabs string. For example, given stabs "A:T4=s4a:1,0,32;;", |
c906108c SS |
3477 | *PP will point to "4a:1,0,32;;". |
3478 | ||
3479 | TYPE points to an incomplete type that needs to be filled in. | |
3480 | ||
3481 | OBJFILE points to the current objfile from which the stabs information is | |
3482 | being read. (Note that it is redundant in that TYPE also contains a pointer | |
3483 | to this same objfile, so it might be a good idea to eliminate it. FIXME). | |
c5aa993b | 3484 | */ |
c906108c SS |
3485 | |
3486 | static struct type * | |
a121b7c1 | 3487 | read_struct_type (const char **pp, struct type *type, enum type_code type_code, |
2ae1c2d2 | 3488 | struct objfile *objfile) |
c906108c SS |
3489 | { |
3490 | struct cleanup *back_to; | |
3491 | struct field_info fi; | |
3492 | ||
3493 | fi.list = NULL; | |
3494 | fi.fnlist = NULL; | |
3495 | ||
2ae1c2d2 JB |
3496 | /* When describing struct/union/class types in stabs, G++ always drops |
3497 | all qualifications from the name. So if you've got: | |
3498 | struct A { ... struct B { ... }; ... }; | |
3499 | then G++ will emit stabs for `struct A::B' that call it simply | |
3500 | `struct B'. Obviously, if you've got a real top-level definition for | |
3501 | `struct B', or other nested definitions, this is going to cause | |
3502 | problems. | |
3503 | ||
3504 | Obviously, GDB can't fix this by itself, but it can at least avoid | |
3505 | scribbling on existing structure type objects when new definitions | |
3506 | appear. */ | |
3507 | if (! (TYPE_CODE (type) == TYPE_CODE_UNDEF | |
3508 | || TYPE_STUB (type))) | |
3509 | { | |
3510 | complain_about_struct_wipeout (type); | |
3511 | ||
3512 | /* It's probably best to return the type unchanged. */ | |
3513 | return type; | |
3514 | } | |
3515 | ||
c906108c SS |
3516 | back_to = make_cleanup (null_cleanup, 0); |
3517 | ||
3518 | INIT_CPLUS_SPECIFIC (type); | |
2ae1c2d2 | 3519 | TYPE_CODE (type) = type_code; |
876cecd0 | 3520 | TYPE_STUB (type) = 0; |
c906108c SS |
3521 | |
3522 | /* First comes the total size in bytes. */ | |
3523 | ||
3524 | { | |
3525 | int nbits; | |
433759f7 | 3526 | |
94e10a22 | 3527 | TYPE_LENGTH (type) = read_huge_number (pp, 0, &nbits, 0); |
c906108c | 3528 | if (nbits != 0) |
73b8d9da TT |
3529 | { |
3530 | do_cleanups (back_to); | |
3531 | return error_type (pp, objfile); | |
3532 | } | |
621791b8 | 3533 | set_length_in_type_chain (type); |
c906108c SS |
3534 | } |
3535 | ||
3536 | /* Now read the baseclasses, if any, read the regular C struct or C++ | |
3537 | class member fields, attach the fields to the type, read the C++ | |
3538 | member functions, attach them to the type, and then read any tilde | |
3e43a32a | 3539 | field (baseclass specifier for the class holding the main vtable). */ |
c906108c SS |
3540 | |
3541 | if (!read_baseclasses (&fi, pp, type, objfile) | |
3542 | || !read_struct_fields (&fi, pp, type, objfile) | |
3543 | || !attach_fields_to_type (&fi, type, objfile) | |
3544 | || !read_member_functions (&fi, pp, type, objfile) | |
3545 | || !attach_fn_fields_to_type (&fi, type) | |
3546 | || !read_tilde_fields (&fi, pp, type, objfile)) | |
3547 | { | |
3548 | type = error_type (pp, objfile); | |
3549 | } | |
3550 | ||
3551 | do_cleanups (back_to); | |
3552 | return (type); | |
3553 | } | |
3554 | ||
3555 | /* Read a definition of an array type, | |
3556 | and create and return a suitable type object. | |
3557 | Also creates a range type which represents the bounds of that | |
3558 | array. */ | |
3559 | ||
3560 | static struct type * | |
a121b7c1 | 3561 | read_array_type (const char **pp, struct type *type, |
fba45db2 | 3562 | struct objfile *objfile) |
c906108c SS |
3563 | { |
3564 | struct type *index_type, *element_type, *range_type; | |
3565 | int lower, upper; | |
3566 | int adjustable = 0; | |
3567 | int nbits; | |
3568 | ||
3569 | /* Format of an array type: | |
3570 | "ar<index type>;lower;upper;<array_contents_type>". | |
3571 | OS9000: "arlower,upper;<array_contents_type>". | |
3572 | ||
3573 | Fortran adjustable arrays use Adigits or Tdigits for lower or upper; | |
3574 | for these, produce a type like float[][]. */ | |
3575 | ||
c906108c SS |
3576 | { |
3577 | index_type = read_type (pp, objfile); | |
3578 | if (**pp != ';') | |
3579 | /* Improper format of array type decl. */ | |
3580 | return error_type (pp, objfile); | |
3581 | ++*pp; | |
3582 | } | |
3583 | ||
3584 | if (!(**pp >= '0' && **pp <= '9') && **pp != '-') | |
3585 | { | |
3586 | (*pp)++; | |
3587 | adjustable = 1; | |
3588 | } | |
94e10a22 | 3589 | lower = read_huge_number (pp, ';', &nbits, 0); |
cdecafbe | 3590 | |
c906108c SS |
3591 | if (nbits != 0) |
3592 | return error_type (pp, objfile); | |
3593 | ||
3594 | if (!(**pp >= '0' && **pp <= '9') && **pp != '-') | |
3595 | { | |
3596 | (*pp)++; | |
3597 | adjustable = 1; | |
3598 | } | |
94e10a22 | 3599 | upper = read_huge_number (pp, ';', &nbits, 0); |
c906108c SS |
3600 | if (nbits != 0) |
3601 | return error_type (pp, objfile); | |
c5aa993b | 3602 | |
c906108c SS |
3603 | element_type = read_type (pp, objfile); |
3604 | ||
3605 | if (adjustable) | |
3606 | { | |
3607 | lower = 0; | |
3608 | upper = -1; | |
3609 | } | |
3610 | ||
3611 | range_type = | |
0c9c3474 | 3612 | create_static_range_type ((struct type *) NULL, index_type, lower, upper); |
c906108c SS |
3613 | type = create_array_type (type, element_type, range_type); |
3614 | ||
3615 | return type; | |
3616 | } | |
3617 | ||
3618 | ||
3619 | /* Read a definition of an enumeration type, | |
3620 | and create and return a suitable type object. | |
3621 | Also defines the symbols that represent the values of the type. */ | |
3622 | ||
3623 | static struct type * | |
a121b7c1 | 3624 | read_enum_type (const char **pp, struct type *type, |
fba45db2 | 3625 | struct objfile *objfile) |
c906108c | 3626 | { |
5e2b427d | 3627 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
a121b7c1 | 3628 | const char *p; |
c906108c | 3629 | char *name; |
52f0bd74 AC |
3630 | long n; |
3631 | struct symbol *sym; | |
c906108c SS |
3632 | int nsyms = 0; |
3633 | struct pending **symlist; | |
3634 | struct pending *osyms, *syms; | |
3635 | int o_nsyms; | |
3636 | int nbits; | |
3637 | int unsigned_enum = 1; | |
3638 | ||
3639 | #if 0 | |
3640 | /* FIXME! The stabs produced by Sun CC merrily define things that ought | |
3641 | to be file-scope, between N_FN entries, using N_LSYM. What's a mother | |
3642 | to do? For now, force all enum values to file scope. */ | |
3643 | if (within_function) | |
3644 | symlist = &local_symbols; | |
3645 | else | |
3646 | #endif | |
3647 | symlist = &file_symbols; | |
3648 | osyms = *symlist; | |
3649 | o_nsyms = osyms ? osyms->nsyms : 0; | |
3650 | ||
c906108c SS |
3651 | /* The aix4 compiler emits an extra field before the enum members; |
3652 | my guess is it's a type of some sort. Just ignore it. */ | |
3653 | if (**pp == '-') | |
3654 | { | |
3655 | /* Skip over the type. */ | |
3656 | while (**pp != ':') | |
c5aa993b | 3657 | (*pp)++; |
c906108c SS |
3658 | |
3659 | /* Skip over the colon. */ | |
3660 | (*pp)++; | |
3661 | } | |
3662 | ||
3663 | /* Read the value-names and their values. | |
3664 | The input syntax is NAME:VALUE,NAME:VALUE, and so on. | |
3665 | A semicolon or comma instead of a NAME means the end. */ | |
3666 | while (**pp && **pp != ';' && **pp != ',') | |
3667 | { | |
3668 | STABS_CONTINUE (pp, objfile); | |
3669 | p = *pp; | |
c5aa993b JM |
3670 | while (*p != ':') |
3671 | p++; | |
224c3ddb | 3672 | name = (char *) obstack_copy0 (&objfile->objfile_obstack, *pp, p - *pp); |
c906108c | 3673 | *pp = p + 1; |
94e10a22 | 3674 | n = read_huge_number (pp, ',', &nbits, 0); |
c906108c SS |
3675 | if (nbits != 0) |
3676 | return error_type (pp, objfile); | |
3677 | ||
e623cf5d | 3678 | sym = allocate_symbol (objfile); |
3567439c | 3679 | SYMBOL_SET_LINKAGE_NAME (sym, name); |
f85f34ed TT |
3680 | SYMBOL_SET_LANGUAGE (sym, current_subfile->language, |
3681 | &objfile->objfile_obstack); | |
f1e6e072 | 3682 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
176620f1 | 3683 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
3684 | SYMBOL_VALUE (sym) = n; |
3685 | if (n < 0) | |
3686 | unsigned_enum = 0; | |
3687 | add_symbol_to_list (sym, symlist); | |
3688 | nsyms++; | |
3689 | } | |
3690 | ||
3691 | if (**pp == ';') | |
3692 | (*pp)++; /* Skip the semicolon. */ | |
3693 | ||
3694 | /* Now fill in the fields of the type-structure. */ | |
3695 | ||
5e2b427d | 3696 | TYPE_LENGTH (type) = gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT; |
621791b8 | 3697 | set_length_in_type_chain (type); |
c906108c | 3698 | TYPE_CODE (type) = TYPE_CODE_ENUM; |
876cecd0 | 3699 | TYPE_STUB (type) = 0; |
c906108c | 3700 | if (unsigned_enum) |
876cecd0 | 3701 | TYPE_UNSIGNED (type) = 1; |
c906108c SS |
3702 | TYPE_NFIELDS (type) = nsyms; |
3703 | TYPE_FIELDS (type) = (struct field *) | |
3704 | TYPE_ALLOC (type, sizeof (struct field) * nsyms); | |
3705 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nsyms); | |
3706 | ||
3707 | /* Find the symbols for the values and put them into the type. | |
3708 | The symbols can be found in the symlist that we put them on | |
3709 | to cause them to be defined. osyms contains the old value | |
3710 | of that symlist; everything up to there was defined by us. */ | |
3711 | /* Note that we preserve the order of the enum constants, so | |
3712 | that in something like "enum {FOO, LAST_THING=FOO}" we print | |
3713 | FOO, not LAST_THING. */ | |
3714 | ||
3715 | for (syms = *symlist, n = nsyms - 1; syms; syms = syms->next) | |
3716 | { | |
3717 | int last = syms == osyms ? o_nsyms : 0; | |
3718 | int j = syms->nsyms; | |
433759f7 | 3719 | |
c906108c SS |
3720 | for (; --j >= last; --n) |
3721 | { | |
3722 | struct symbol *xsym = syms->symbol[j]; | |
433759f7 | 3723 | |
c906108c | 3724 | SYMBOL_TYPE (xsym) = type; |
3567439c | 3725 | TYPE_FIELD_NAME (type, n) = SYMBOL_LINKAGE_NAME (xsym); |
14e75d8e | 3726 | SET_FIELD_ENUMVAL (TYPE_FIELD (type, n), SYMBOL_VALUE (xsym)); |
c906108c SS |
3727 | TYPE_FIELD_BITSIZE (type, n) = 0; |
3728 | } | |
3729 | if (syms == osyms) | |
3730 | break; | |
3731 | } | |
3732 | ||
3733 | return type; | |
3734 | } | |
3735 | ||
3736 | /* Sun's ACC uses a somewhat saner method for specifying the builtin | |
3737 | typedefs in every file (for int, long, etc): | |
3738 | ||
c5aa993b JM |
3739 | type = b <signed> <width> <format type>; <offset>; <nbits> |
3740 | signed = u or s. | |
3741 | optional format type = c or b for char or boolean. | |
3742 | offset = offset from high order bit to start bit of type. | |
3743 | width is # bytes in object of this type, nbits is # bits in type. | |
c906108c SS |
3744 | |
3745 | The width/offset stuff appears to be for small objects stored in | |
3746 | larger ones (e.g. `shorts' in `int' registers). We ignore it for now, | |
3747 | FIXME. */ | |
3748 | ||
3749 | static struct type * | |
a121b7c1 | 3750 | read_sun_builtin_type (const char **pp, int typenums[2], struct objfile *objfile) |
c906108c SS |
3751 | { |
3752 | int type_bits; | |
3753 | int nbits; | |
19f392bc UW |
3754 | int unsigned_type; |
3755 | int boolean_type = 0; | |
c906108c SS |
3756 | |
3757 | switch (**pp) | |
3758 | { | |
c5aa993b | 3759 | case 's': |
19f392bc | 3760 | unsigned_type = 0; |
c5aa993b JM |
3761 | break; |
3762 | case 'u': | |
19f392bc | 3763 | unsigned_type = 1; |
c5aa993b JM |
3764 | break; |
3765 | default: | |
3766 | return error_type (pp, objfile); | |
c906108c SS |
3767 | } |
3768 | (*pp)++; | |
3769 | ||
3770 | /* For some odd reason, all forms of char put a c here. This is strange | |
3771 | because no other type has this honor. We can safely ignore this because | |
3772 | we actually determine 'char'acterness by the number of bits specified in | |
3773 | the descriptor. | |
3774 | Boolean forms, e.g Fortran logical*X, put a b here. */ | |
3775 | ||
3776 | if (**pp == 'c') | |
3777 | (*pp)++; | |
3778 | else if (**pp == 'b') | |
3779 | { | |
19f392bc | 3780 | boolean_type = 1; |
c906108c SS |
3781 | (*pp)++; |
3782 | } | |
3783 | ||
3784 | /* The first number appears to be the number of bytes occupied | |
3785 | by this type, except that unsigned short is 4 instead of 2. | |
3786 | Since this information is redundant with the third number, | |
3787 | we will ignore it. */ | |
94e10a22 | 3788 | read_huge_number (pp, ';', &nbits, 0); |
c906108c SS |
3789 | if (nbits != 0) |
3790 | return error_type (pp, objfile); | |
3791 | ||
c378eb4e | 3792 | /* The second number is always 0, so ignore it too. */ |
94e10a22 | 3793 | read_huge_number (pp, ';', &nbits, 0); |
c906108c SS |
3794 | if (nbits != 0) |
3795 | return error_type (pp, objfile); | |
3796 | ||
c378eb4e | 3797 | /* The third number is the number of bits for this type. */ |
94e10a22 | 3798 | type_bits = read_huge_number (pp, 0, &nbits, 0); |
c906108c SS |
3799 | if (nbits != 0) |
3800 | return error_type (pp, objfile); | |
3801 | /* The type *should* end with a semicolon. If it are embedded | |
3802 | in a larger type the semicolon may be the only way to know where | |
3803 | the type ends. If this type is at the end of the stabstring we | |
3804 | can deal with the omitted semicolon (but we don't have to like | |
3805 | it). Don't bother to complain(), Sun's compiler omits the semicolon | |
3806 | for "void". */ | |
3807 | if (**pp == ';') | |
3808 | ++(*pp); | |
3809 | ||
3810 | if (type_bits == 0) | |
19f392bc | 3811 | { |
77b7c781 UW |
3812 | struct type *type = init_type (objfile, TYPE_CODE_VOID, |
3813 | TARGET_CHAR_BIT, NULL); | |
19f392bc UW |
3814 | if (unsigned_type) |
3815 | TYPE_UNSIGNED (type) = 1; | |
3816 | return type; | |
3817 | } | |
3818 | ||
3819 | if (boolean_type) | |
3820 | return init_boolean_type (objfile, type_bits, unsigned_type, NULL); | |
c906108c | 3821 | else |
19f392bc | 3822 | return init_integer_type (objfile, type_bits, unsigned_type, NULL); |
c906108c SS |
3823 | } |
3824 | ||
3825 | static struct type * | |
a121b7c1 PA |
3826 | read_sun_floating_type (const char **pp, int typenums[2], |
3827 | struct objfile *objfile) | |
c906108c SS |
3828 | { |
3829 | int nbits; | |
3830 | int details; | |
3831 | int nbytes; | |
f65ca430 | 3832 | struct type *rettype; |
c906108c SS |
3833 | |
3834 | /* The first number has more details about the type, for example | |
3835 | FN_COMPLEX. */ | |
94e10a22 | 3836 | details = read_huge_number (pp, ';', &nbits, 0); |
c906108c SS |
3837 | if (nbits != 0) |
3838 | return error_type (pp, objfile); | |
3839 | ||
c378eb4e | 3840 | /* The second number is the number of bytes occupied by this type. */ |
94e10a22 | 3841 | nbytes = read_huge_number (pp, ';', &nbits, 0); |
c906108c SS |
3842 | if (nbits != 0) |
3843 | return error_type (pp, objfile); | |
3844 | ||
19f392bc UW |
3845 | nbits = nbytes * TARGET_CHAR_BIT; |
3846 | ||
c906108c SS |
3847 | if (details == NF_COMPLEX || details == NF_COMPLEX16 |
3848 | || details == NF_COMPLEX32) | |
f65ca430 | 3849 | { |
9b790ce7 | 3850 | rettype = dbx_init_float_type (objfile, nbits / 2); |
19f392bc | 3851 | return init_complex_type (objfile, NULL, rettype); |
f65ca430 | 3852 | } |
c906108c | 3853 | |
9b790ce7 | 3854 | return dbx_init_float_type (objfile, nbits); |
c906108c SS |
3855 | } |
3856 | ||
3857 | /* Read a number from the string pointed to by *PP. | |
3858 | The value of *PP is advanced over the number. | |
3859 | If END is nonzero, the character that ends the | |
3860 | number must match END, or an error happens; | |
3861 | and that character is skipped if it does match. | |
3862 | If END is zero, *PP is left pointing to that character. | |
3863 | ||
94e10a22 JG |
3864 | If TWOS_COMPLEMENT_BITS is set to a strictly positive value and if |
3865 | the number is represented in an octal representation, assume that | |
3866 | it is represented in a 2's complement representation with a size of | |
3867 | TWOS_COMPLEMENT_BITS. | |
3868 | ||
c906108c SS |
3869 | If the number fits in a long, set *BITS to 0 and return the value. |
3870 | If not, set *BITS to be the number of bits in the number and return 0. | |
3871 | ||
3872 | If encounter garbage, set *BITS to -1 and return 0. */ | |
3873 | ||
c2d11a7d | 3874 | static long |
a121b7c1 PA |
3875 | read_huge_number (const char **pp, int end, int *bits, |
3876 | int twos_complement_bits) | |
c906108c | 3877 | { |
a121b7c1 | 3878 | const char *p = *pp; |
c906108c | 3879 | int sign = 1; |
51e9e0d4 | 3880 | int sign_bit = 0; |
c2d11a7d | 3881 | long n = 0; |
c906108c SS |
3882 | int radix = 10; |
3883 | char overflow = 0; | |
3884 | int nbits = 0; | |
3885 | int c; | |
c2d11a7d | 3886 | long upper_limit; |
a2699720 | 3887 | int twos_complement_representation = 0; |
c5aa993b | 3888 | |
c906108c SS |
3889 | if (*p == '-') |
3890 | { | |
3891 | sign = -1; | |
3892 | p++; | |
3893 | } | |
3894 | ||
3895 | /* Leading zero means octal. GCC uses this to output values larger | |
3896 | than an int (because that would be hard in decimal). */ | |
3897 | if (*p == '0') | |
3898 | { | |
3899 | radix = 8; | |
3900 | p++; | |
3901 | } | |
3902 | ||
a2699720 PA |
3903 | /* Skip extra zeros. */ |
3904 | while (*p == '0') | |
3905 | p++; | |
3906 | ||
3907 | if (sign > 0 && radix == 8 && twos_complement_bits > 0) | |
3908 | { | |
3909 | /* Octal, possibly signed. Check if we have enough chars for a | |
3910 | negative number. */ | |
3911 | ||
3912 | size_t len; | |
a121b7c1 | 3913 | const char *p1 = p; |
433759f7 | 3914 | |
a2699720 PA |
3915 | while ((c = *p1) >= '0' && c < '8') |
3916 | p1++; | |
3917 | ||
3918 | len = p1 - p; | |
3919 | if (len > twos_complement_bits / 3 | |
3e43a32a MS |
3920 | || (twos_complement_bits % 3 == 0 |
3921 | && len == twos_complement_bits / 3)) | |
a2699720 PA |
3922 | { |
3923 | /* Ok, we have enough characters for a signed value, check | |
3924 | for signness by testing if the sign bit is set. */ | |
3925 | sign_bit = (twos_complement_bits % 3 + 2) % 3; | |
3926 | c = *p - '0'; | |
3927 | if (c & (1 << sign_bit)) | |
3928 | { | |
3929 | /* Definitely signed. */ | |
3930 | twos_complement_representation = 1; | |
3931 | sign = -1; | |
3932 | } | |
3933 | } | |
3934 | } | |
3935 | ||
1b831c93 | 3936 | upper_limit = LONG_MAX / radix; |
c906108c SS |
3937 | |
3938 | while ((c = *p++) >= '0' && c < ('0' + radix)) | |
3939 | { | |
3940 | if (n <= upper_limit) | |
94e10a22 JG |
3941 | { |
3942 | if (twos_complement_representation) | |
3943 | { | |
a2699720 PA |
3944 | /* Octal, signed, twos complement representation. In |
3945 | this case, n is the corresponding absolute value. */ | |
3946 | if (n == 0) | |
3947 | { | |
3948 | long sn = c - '0' - ((2 * (c - '0')) | (2 << sign_bit)); | |
433759f7 | 3949 | |
a2699720 PA |
3950 | n = -sn; |
3951 | } | |
94e10a22 JG |
3952 | else |
3953 | { | |
a2699720 PA |
3954 | n *= radix; |
3955 | n -= c - '0'; | |
94e10a22 | 3956 | } |
94e10a22 JG |
3957 | } |
3958 | else | |
3959 | { | |
3960 | /* unsigned representation */ | |
3961 | n *= radix; | |
c378eb4e | 3962 | n += c - '0'; /* FIXME this overflows anyway. */ |
94e10a22 JG |
3963 | } |
3964 | } | |
c906108c | 3965 | else |
94e10a22 | 3966 | overflow = 1; |
c5aa993b | 3967 | |
c906108c | 3968 | /* This depends on large values being output in octal, which is |
c378eb4e | 3969 | what GCC does. */ |
c906108c SS |
3970 | if (radix == 8) |
3971 | { | |
3972 | if (nbits == 0) | |
3973 | { | |
3974 | if (c == '0') | |
3975 | /* Ignore leading zeroes. */ | |
3976 | ; | |
3977 | else if (c == '1') | |
3978 | nbits = 1; | |
3979 | else if (c == '2' || c == '3') | |
3980 | nbits = 2; | |
3981 | else | |
3982 | nbits = 3; | |
3983 | } | |
3984 | else | |
3985 | nbits += 3; | |
3986 | } | |
3987 | } | |
3988 | if (end) | |
3989 | { | |
3990 | if (c && c != end) | |
3991 | { | |
3992 | if (bits != NULL) | |
3993 | *bits = -1; | |
3994 | return 0; | |
3995 | } | |
3996 | } | |
3997 | else | |
3998 | --p; | |
3999 | ||
a2699720 PA |
4000 | if (radix == 8 && twos_complement_bits > 0 && nbits > twos_complement_bits) |
4001 | { | |
4002 | /* We were supposed to parse a number with maximum | |
4003 | TWOS_COMPLEMENT_BITS bits, but something went wrong. */ | |
4004 | if (bits != NULL) | |
4005 | *bits = -1; | |
4006 | return 0; | |
4007 | } | |
4008 | ||
c906108c SS |
4009 | *pp = p; |
4010 | if (overflow) | |
4011 | { | |
4012 | if (nbits == 0) | |
4013 | { | |
4014 | /* Large decimal constants are an error (because it is hard to | |
4015 | count how many bits are in them). */ | |
4016 | if (bits != NULL) | |
4017 | *bits = -1; | |
4018 | return 0; | |
4019 | } | |
c5aa993b | 4020 | |
c906108c | 4021 | /* -0x7f is the same as 0x80. So deal with it by adding one to |
a2699720 PA |
4022 | the number of bits. Two's complement represention octals |
4023 | can't have a '-' in front. */ | |
4024 | if (sign == -1 && !twos_complement_representation) | |
c906108c SS |
4025 | ++nbits; |
4026 | if (bits) | |
4027 | *bits = nbits; | |
4028 | } | |
4029 | else | |
4030 | { | |
4031 | if (bits) | |
4032 | *bits = 0; | |
a2699720 | 4033 | return n * sign; |
c906108c SS |
4034 | } |
4035 | /* It's *BITS which has the interesting information. */ | |
4036 | return 0; | |
4037 | } | |
4038 | ||
4039 | static struct type * | |
a121b7c1 | 4040 | read_range_type (const char **pp, int typenums[2], int type_size, |
94e10a22 | 4041 | struct objfile *objfile) |
c906108c | 4042 | { |
5e2b427d | 4043 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
a121b7c1 | 4044 | const char *orig_pp = *pp; |
c906108c | 4045 | int rangenums[2]; |
c2d11a7d | 4046 | long n2, n3; |
c906108c SS |
4047 | int n2bits, n3bits; |
4048 | int self_subrange; | |
4049 | struct type *result_type; | |
4050 | struct type *index_type = NULL; | |
4051 | ||
4052 | /* First comes a type we are a subrange of. | |
4053 | In C it is usually 0, 1 or the type being defined. */ | |
4054 | if (read_type_number (pp, rangenums) != 0) | |
4055 | return error_type (pp, objfile); | |
4056 | self_subrange = (rangenums[0] == typenums[0] && | |
4057 | rangenums[1] == typenums[1]); | |
4058 | ||
4059 | if (**pp == '=') | |
4060 | { | |
4061 | *pp = orig_pp; | |
4062 | index_type = read_type (pp, objfile); | |
4063 | } | |
4064 | ||
4065 | /* A semicolon should now follow; skip it. */ | |
4066 | if (**pp == ';') | |
4067 | (*pp)++; | |
4068 | ||
4069 | /* The remaining two operands are usually lower and upper bounds | |
4070 | of the range. But in some special cases they mean something else. */ | |
94e10a22 JG |
4071 | n2 = read_huge_number (pp, ';', &n2bits, type_size); |
4072 | n3 = read_huge_number (pp, ';', &n3bits, type_size); | |
c906108c SS |
4073 | |
4074 | if (n2bits == -1 || n3bits == -1) | |
4075 | return error_type (pp, objfile); | |
4076 | ||
4077 | if (index_type) | |
4078 | goto handle_true_range; | |
4079 | ||
4080 | /* If limits are huge, must be large integral type. */ | |
4081 | if (n2bits != 0 || n3bits != 0) | |
4082 | { | |
4083 | char got_signed = 0; | |
4084 | char got_unsigned = 0; | |
4085 | /* Number of bits in the type. */ | |
4086 | int nbits = 0; | |
4087 | ||
94e10a22 | 4088 | /* If a type size attribute has been specified, the bounds of |
c378eb4e | 4089 | the range should fit in this size. If the lower bounds needs |
94e10a22 JG |
4090 | more bits than the upper bound, then the type is signed. */ |
4091 | if (n2bits <= type_size && n3bits <= type_size) | |
4092 | { | |
4093 | if (n2bits == type_size && n2bits > n3bits) | |
4094 | got_signed = 1; | |
4095 | else | |
4096 | got_unsigned = 1; | |
4097 | nbits = type_size; | |
4098 | } | |
c906108c | 4099 | /* Range from 0 to <large number> is an unsigned large integral type. */ |
94e10a22 | 4100 | else if ((n2bits == 0 && n2 == 0) && n3bits != 0) |
c906108c SS |
4101 | { |
4102 | got_unsigned = 1; | |
4103 | nbits = n3bits; | |
4104 | } | |
4105 | /* Range from <large number> to <large number>-1 is a large signed | |
c5aa993b JM |
4106 | integral type. Take care of the case where <large number> doesn't |
4107 | fit in a long but <large number>-1 does. */ | |
c906108c SS |
4108 | else if ((n2bits != 0 && n3bits != 0 && n2bits == n3bits + 1) |
4109 | || (n2bits != 0 && n3bits == 0 | |
c2d11a7d JM |
4110 | && (n2bits == sizeof (long) * HOST_CHAR_BIT) |
4111 | && n3 == LONG_MAX)) | |
c906108c SS |
4112 | { |
4113 | got_signed = 1; | |
4114 | nbits = n2bits; | |
4115 | } | |
4116 | ||
4117 | if (got_signed || got_unsigned) | |
19f392bc | 4118 | return init_integer_type (objfile, nbits, got_unsigned, NULL); |
c906108c SS |
4119 | else |
4120 | return error_type (pp, objfile); | |
4121 | } | |
4122 | ||
4123 | /* A type defined as a subrange of itself, with bounds both 0, is void. */ | |
4124 | if (self_subrange && n2 == 0 && n3 == 0) | |
77b7c781 | 4125 | return init_type (objfile, TYPE_CODE_VOID, TARGET_CHAR_BIT, NULL); |
c906108c SS |
4126 | |
4127 | /* If n3 is zero and n2 is positive, we want a floating type, and n2 | |
4128 | is the width in bytes. | |
4129 | ||
4130 | Fortran programs appear to use this for complex types also. To | |
4131 | distinguish between floats and complex, g77 (and others?) seem | |
4132 | to use self-subranges for the complexes, and subranges of int for | |
4133 | the floats. | |
4134 | ||
4135 | Also note that for complexes, g77 sets n2 to the size of one of | |
4136 | the member floats, not the whole complex beast. My guess is that | |
c378eb4e | 4137 | this was to work well with pre-COMPLEX versions of gdb. */ |
c906108c SS |
4138 | |
4139 | if (n3 == 0 && n2 > 0) | |
4140 | { | |
1300f5dd | 4141 | struct type *float_type |
9b790ce7 | 4142 | = dbx_init_float_type (objfile, n2 * TARGET_CHAR_BIT); |
1300f5dd | 4143 | |
c906108c | 4144 | if (self_subrange) |
19f392bc | 4145 | return init_complex_type (objfile, NULL, float_type); |
c906108c | 4146 | else |
1300f5dd | 4147 | return float_type; |
c906108c SS |
4148 | } |
4149 | ||
a2699720 | 4150 | /* If the upper bound is -1, it must really be an unsigned integral. */ |
c906108c SS |
4151 | |
4152 | else if (n2 == 0 && n3 == -1) | |
4153 | { | |
a2699720 | 4154 | int bits = type_size; |
433759f7 | 4155 | |
a2699720 PA |
4156 | if (bits <= 0) |
4157 | { | |
4158 | /* We don't know its size. It is unsigned int or unsigned | |
4159 | long. GCC 2.3.3 uses this for long long too, but that is | |
4160 | just a GDB 3.5 compatibility hack. */ | |
5e2b427d | 4161 | bits = gdbarch_int_bit (gdbarch); |
a2699720 PA |
4162 | } |
4163 | ||
19f392bc | 4164 | return init_integer_type (objfile, bits, 1, NULL); |
c906108c SS |
4165 | } |
4166 | ||
4167 | /* Special case: char is defined (Who knows why) as a subrange of | |
4168 | itself with range 0-127. */ | |
4169 | else if (self_subrange && n2 == 0 && n3 == 127) | |
19f392bc | 4170 | { |
77b7c781 UW |
4171 | struct type *type = init_integer_type (objfile, TARGET_CHAR_BIT, |
4172 | 0, NULL); | |
19f392bc UW |
4173 | TYPE_NOSIGN (type) = 1; |
4174 | return type; | |
4175 | } | |
c906108c SS |
4176 | /* We used to do this only for subrange of self or subrange of int. */ |
4177 | else if (n2 == 0) | |
4178 | { | |
a0b3c4fd JM |
4179 | /* -1 is used for the upper bound of (4 byte) "unsigned int" and |
4180 | "unsigned long", and we already checked for that, | |
4181 | so don't need to test for it here. */ | |
4182 | ||
c906108c SS |
4183 | if (n3 < 0) |
4184 | /* n3 actually gives the size. */ | |
19f392bc | 4185 | return init_integer_type (objfile, -n3 * TARGET_CHAR_BIT, 1, NULL); |
c906108c | 4186 | |
7be570e7 | 4187 | /* Is n3 == 2**(8n)-1 for some integer n? Then it's an |
a0b3c4fd JM |
4188 | unsigned n-byte integer. But do require n to be a power of |
4189 | two; we don't want 3- and 5-byte integers flying around. */ | |
4190 | { | |
4191 | int bytes; | |
4192 | unsigned long bits; | |
4193 | ||
4194 | bits = n3; | |
4195 | for (bytes = 0; (bits & 0xff) == 0xff; bytes++) | |
4196 | bits >>= 8; | |
4197 | if (bits == 0 | |
4198 | && ((bytes - 1) & bytes) == 0) /* "bytes is a power of two" */ | |
19f392bc | 4199 | return init_integer_type (objfile, bytes * TARGET_CHAR_BIT, 1, NULL); |
a0b3c4fd | 4200 | } |
c906108c SS |
4201 | } |
4202 | /* I think this is for Convex "long long". Since I don't know whether | |
4203 | Convex sets self_subrange, I also accept that particular size regardless | |
4204 | of self_subrange. */ | |
4205 | else if (n3 == 0 && n2 < 0 | |
4206 | && (self_subrange | |
9a76efb6 | 4207 | || n2 == -gdbarch_long_long_bit |
5e2b427d | 4208 | (gdbarch) / TARGET_CHAR_BIT)) |
19f392bc | 4209 | return init_integer_type (objfile, -n2 * TARGET_CHAR_BIT, 0, NULL); |
c5aa993b | 4210 | else if (n2 == -n3 - 1) |
c906108c SS |
4211 | { |
4212 | if (n3 == 0x7f) | |
19f392bc | 4213 | return init_integer_type (objfile, 8, 0, NULL); |
c906108c | 4214 | if (n3 == 0x7fff) |
19f392bc | 4215 | return init_integer_type (objfile, 16, 0, NULL); |
c906108c | 4216 | if (n3 == 0x7fffffff) |
19f392bc | 4217 | return init_integer_type (objfile, 32, 0, NULL); |
c906108c SS |
4218 | } |
4219 | ||
4220 | /* We have a real range type on our hands. Allocate space and | |
4221 | return a real pointer. */ | |
c5aa993b | 4222 | handle_true_range: |
c906108c SS |
4223 | |
4224 | if (self_subrange) | |
46bf5051 | 4225 | index_type = objfile_type (objfile)->builtin_int; |
c906108c | 4226 | else |
46bf5051 | 4227 | index_type = *dbx_lookup_type (rangenums, objfile); |
c906108c SS |
4228 | if (index_type == NULL) |
4229 | { | |
4230 | /* Does this actually ever happen? Is that why we are worrying | |
4231 | about dealing with it rather than just calling error_type? */ | |
4232 | ||
b98664d3 | 4233 | complaint (_("base type %d of range type is not defined"), rangenums[1]); |
5e2b427d | 4234 | |
46bf5051 | 4235 | index_type = objfile_type (objfile)->builtin_int; |
c906108c SS |
4236 | } |
4237 | ||
0c9c3474 SA |
4238 | result_type |
4239 | = create_static_range_type ((struct type *) NULL, index_type, n2, n3); | |
c906108c SS |
4240 | return (result_type); |
4241 | } | |
4242 | ||
4243 | /* Read in an argument list. This is a list of types, separated by commas | |
0a029df5 DJ |
4244 | and terminated with END. Return the list of types read in, or NULL |
4245 | if there is an error. */ | |
c906108c | 4246 | |
ad2f7632 | 4247 | static struct field * |
a121b7c1 | 4248 | read_args (const char **pp, int end, struct objfile *objfile, int *nargsp, |
ad2f7632 | 4249 | int *varargsp) |
c906108c SS |
4250 | { |
4251 | /* FIXME! Remove this arbitrary limit! */ | |
c378eb4e | 4252 | struct type *types[1024]; /* Allow for fns of 1023 parameters. */ |
ad2f7632 DJ |
4253 | int n = 0, i; |
4254 | struct field *rval; | |
c906108c SS |
4255 | |
4256 | while (**pp != end) | |
4257 | { | |
4258 | if (**pp != ',') | |
4259 | /* Invalid argument list: no ','. */ | |
0a029df5 | 4260 | return NULL; |
c906108c SS |
4261 | (*pp)++; |
4262 | STABS_CONTINUE (pp, objfile); | |
4263 | types[n++] = read_type (pp, objfile); | |
4264 | } | |
c378eb4e | 4265 | (*pp)++; /* get past `end' (the ':' character). */ |
c906108c | 4266 | |
d24d8548 JK |
4267 | if (n == 0) |
4268 | { | |
4269 | /* We should read at least the THIS parameter here. Some broken stabs | |
4270 | output contained `(0,41),(0,42)=@s8;-16;,(0,43),(0,1);' where should | |
4271 | have been present ";-16,(0,43)" reference instead. This way the | |
4272 | excessive ";" marker prematurely stops the parameters parsing. */ | |
4273 | ||
b98664d3 | 4274 | complaint (_("Invalid (empty) method arguments")); |
d24d8548 JK |
4275 | *varargsp = 0; |
4276 | } | |
4277 | else if (TYPE_CODE (types[n - 1]) != TYPE_CODE_VOID) | |
ad2f7632 | 4278 | *varargsp = 1; |
c906108c SS |
4279 | else |
4280 | { | |
ad2f7632 DJ |
4281 | n--; |
4282 | *varargsp = 0; | |
c906108c | 4283 | } |
ad2f7632 | 4284 | |
8d749320 | 4285 | rval = XCNEWVEC (struct field, n); |
ad2f7632 DJ |
4286 | for (i = 0; i < n; i++) |
4287 | rval[i].type = types[i]; | |
4288 | *nargsp = n; | |
c906108c SS |
4289 | return rval; |
4290 | } | |
4291 | \f | |
4292 | /* Common block handling. */ | |
4293 | ||
4294 | /* List of symbols declared since the last BCOMM. This list is a tail | |
4295 | of local_symbols. When ECOMM is seen, the symbols on the list | |
4296 | are noted so their proper addresses can be filled in later, | |
4297 | using the common block base address gotten from the assembler | |
4298 | stabs. */ | |
4299 | ||
4300 | static struct pending *common_block; | |
4301 | static int common_block_i; | |
4302 | ||
4303 | /* Name of the current common block. We get it from the BCOMM instead of the | |
4304 | ECOMM to match IBM documentation (even though IBM puts the name both places | |
4305 | like everyone else). */ | |
4306 | static char *common_block_name; | |
4307 | ||
4308 | /* Process a N_BCOMM symbol. The storage for NAME is not guaranteed | |
4309 | to remain after this function returns. */ | |
4310 | ||
4311 | void | |
a121b7c1 | 4312 | common_block_start (const char *name, struct objfile *objfile) |
c906108c SS |
4313 | { |
4314 | if (common_block_name != NULL) | |
4315 | { | |
b98664d3 | 4316 | complaint (_("Invalid symbol data: common block within common block")); |
c906108c SS |
4317 | } |
4318 | common_block = local_symbols; | |
4319 | common_block_i = local_symbols ? local_symbols->nsyms : 0; | |
224c3ddb SM |
4320 | common_block_name = (char *) obstack_copy0 (&objfile->objfile_obstack, name, |
4321 | strlen (name)); | |
c906108c SS |
4322 | } |
4323 | ||
4324 | /* Process a N_ECOMM symbol. */ | |
4325 | ||
4326 | void | |
fba45db2 | 4327 | common_block_end (struct objfile *objfile) |
c906108c SS |
4328 | { |
4329 | /* Symbols declared since the BCOMM are to have the common block | |
4330 | start address added in when we know it. common_block and | |
4331 | common_block_i point to the first symbol after the BCOMM in | |
4332 | the local_symbols list; copy the list and hang it off the | |
4333 | symbol for the common block name for later fixup. */ | |
4334 | int i; | |
4335 | struct symbol *sym; | |
fe978cb0 | 4336 | struct pending *newobj = 0; |
c906108c SS |
4337 | struct pending *next; |
4338 | int j; | |
4339 | ||
4340 | if (common_block_name == NULL) | |
4341 | { | |
b98664d3 | 4342 | complaint (_("ECOMM symbol unmatched by BCOMM")); |
c906108c SS |
4343 | return; |
4344 | } | |
4345 | ||
e623cf5d | 4346 | sym = allocate_symbol (objfile); |
c378eb4e | 4347 | /* Note: common_block_name already saved on objfile_obstack. */ |
3567439c | 4348 | SYMBOL_SET_LINKAGE_NAME (sym, common_block_name); |
f1e6e072 | 4349 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
c906108c SS |
4350 | |
4351 | /* Now we copy all the symbols which have been defined since the BCOMM. */ | |
4352 | ||
4353 | /* Copy all the struct pendings before common_block. */ | |
4354 | for (next = local_symbols; | |
4355 | next != NULL && next != common_block; | |
4356 | next = next->next) | |
4357 | { | |
4358 | for (j = 0; j < next->nsyms; j++) | |
fe978cb0 | 4359 | add_symbol_to_list (next->symbol[j], &newobj); |
c906108c SS |
4360 | } |
4361 | ||
4362 | /* Copy however much of COMMON_BLOCK we need. If COMMON_BLOCK is | |
4363 | NULL, it means copy all the local symbols (which we already did | |
4364 | above). */ | |
4365 | ||
4366 | if (common_block != NULL) | |
4367 | for (j = common_block_i; j < common_block->nsyms; j++) | |
fe978cb0 | 4368 | add_symbol_to_list (common_block->symbol[j], &newobj); |
c906108c | 4369 | |
fe978cb0 | 4370 | SYMBOL_TYPE (sym) = (struct type *) newobj; |
c906108c SS |
4371 | |
4372 | /* Should we be putting local_symbols back to what it was? | |
4373 | Does it matter? */ | |
4374 | ||
3567439c | 4375 | i = hashname (SYMBOL_LINKAGE_NAME (sym)); |
c906108c SS |
4376 | SYMBOL_VALUE_CHAIN (sym) = global_sym_chain[i]; |
4377 | global_sym_chain[i] = sym; | |
4378 | common_block_name = NULL; | |
4379 | } | |
4380 | ||
4381 | /* Add a common block's start address to the offset of each symbol | |
4382 | declared to be in it (by being between a BCOMM/ECOMM pair that uses | |
4383 | the common block name). */ | |
4384 | ||
4385 | static void | |
46cb6474 | 4386 | fix_common_block (struct symbol *sym, CORE_ADDR valu) |
c906108c SS |
4387 | { |
4388 | struct pending *next = (struct pending *) SYMBOL_TYPE (sym); | |
433759f7 | 4389 | |
c5aa993b | 4390 | for (; next; next = next->next) |
c906108c | 4391 | { |
aa1ee363 | 4392 | int j; |
433759f7 | 4393 | |
c906108c SS |
4394 | for (j = next->nsyms - 1; j >= 0; j--) |
4395 | SYMBOL_VALUE_ADDRESS (next->symbol[j]) += valu; | |
4396 | } | |
4397 | } | |
c5aa993b | 4398 | \f |
c906108c SS |
4399 | |
4400 | ||
bf362611 JB |
4401 | /* Add {TYPE, TYPENUMS} to the NONAME_UNDEFS vector. |
4402 | See add_undefined_type for more details. */ | |
c906108c | 4403 | |
a7a48797 | 4404 | static void |
bf362611 JB |
4405 | add_undefined_type_noname (struct type *type, int typenums[2]) |
4406 | { | |
4407 | struct nat nat; | |
4408 | ||
4409 | nat.typenums[0] = typenums [0]; | |
4410 | nat.typenums[1] = typenums [1]; | |
4411 | nat.type = type; | |
4412 | ||
4413 | if (noname_undefs_length == noname_undefs_allocated) | |
4414 | { | |
4415 | noname_undefs_allocated *= 2; | |
4416 | noname_undefs = (struct nat *) | |
4417 | xrealloc ((char *) noname_undefs, | |
4418 | noname_undefs_allocated * sizeof (struct nat)); | |
4419 | } | |
4420 | noname_undefs[noname_undefs_length++] = nat; | |
4421 | } | |
4422 | ||
4423 | /* Add TYPE to the UNDEF_TYPES vector. | |
4424 | See add_undefined_type for more details. */ | |
4425 | ||
4426 | static void | |
4427 | add_undefined_type_1 (struct type *type) | |
c906108c SS |
4428 | { |
4429 | if (undef_types_length == undef_types_allocated) | |
4430 | { | |
4431 | undef_types_allocated *= 2; | |
4432 | undef_types = (struct type **) | |
4433 | xrealloc ((char *) undef_types, | |
4434 | undef_types_allocated * sizeof (struct type *)); | |
4435 | } | |
4436 | undef_types[undef_types_length++] = type; | |
4437 | } | |
4438 | ||
bf362611 JB |
4439 | /* What about types defined as forward references inside of a small lexical |
4440 | scope? */ | |
4441 | /* Add a type to the list of undefined types to be checked through | |
4442 | once this file has been read in. | |
4443 | ||
4444 | In practice, we actually maintain two such lists: The first list | |
4445 | (UNDEF_TYPES) is used for types whose name has been provided, and | |
4446 | concerns forward references (eg 'xs' or 'xu' forward references); | |
4447 | the second list (NONAME_UNDEFS) is used for types whose name is | |
4448 | unknown at creation time, because they were referenced through | |
4449 | their type number before the actual type was declared. | |
4450 | This function actually adds the given type to the proper list. */ | |
4451 | ||
4452 | static void | |
4453 | add_undefined_type (struct type *type, int typenums[2]) | |
4454 | { | |
e86ca25f | 4455 | if (TYPE_NAME (type) == NULL) |
bf362611 JB |
4456 | add_undefined_type_noname (type, typenums); |
4457 | else | |
4458 | add_undefined_type_1 (type); | |
4459 | } | |
4460 | ||
4461 | /* Try to fix all undefined types pushed on the UNDEF_TYPES vector. */ | |
4462 | ||
2c0b251b | 4463 | static void |
46bf5051 | 4464 | cleanup_undefined_types_noname (struct objfile *objfile) |
bf362611 JB |
4465 | { |
4466 | int i; | |
4467 | ||
4468 | for (i = 0; i < noname_undefs_length; i++) | |
4469 | { | |
4470 | struct nat nat = noname_undefs[i]; | |
4471 | struct type **type; | |
4472 | ||
46bf5051 | 4473 | type = dbx_lookup_type (nat.typenums, objfile); |
bf362611 | 4474 | if (nat.type != *type && TYPE_CODE (*type) != TYPE_CODE_UNDEF) |
56953f80 JB |
4475 | { |
4476 | /* The instance flags of the undefined type are still unset, | |
4477 | and needs to be copied over from the reference type. | |
4478 | Since replace_type expects them to be identical, we need | |
4479 | to set these flags manually before hand. */ | |
4480 | TYPE_INSTANCE_FLAGS (nat.type) = TYPE_INSTANCE_FLAGS (*type); | |
4481 | replace_type (nat.type, *type); | |
4482 | } | |
bf362611 JB |
4483 | } |
4484 | ||
4485 | noname_undefs_length = 0; | |
4486 | } | |
4487 | ||
c906108c SS |
4488 | /* Go through each undefined type, see if it's still undefined, and fix it |
4489 | up if possible. We have two kinds of undefined types: | |
4490 | ||
4491 | TYPE_CODE_ARRAY: Array whose target type wasn't defined yet. | |
c5aa993b JM |
4492 | Fix: update array length using the element bounds |
4493 | and the target type's length. | |
c906108c | 4494 | TYPE_CODE_STRUCT, TYPE_CODE_UNION: Structure whose fields were not |
c5aa993b JM |
4495 | yet defined at the time a pointer to it was made. |
4496 | Fix: Do a full lookup on the struct/union tag. */ | |
bf362611 | 4497 | |
2c0b251b | 4498 | static void |
bf362611 | 4499 | cleanup_undefined_types_1 (void) |
c906108c SS |
4500 | { |
4501 | struct type **type; | |
4502 | ||
9e386756 JB |
4503 | /* Iterate over every undefined type, and look for a symbol whose type |
4504 | matches our undefined type. The symbol matches if: | |
4505 | 1. It is a typedef in the STRUCT domain; | |
4506 | 2. It has the same name, and same type code; | |
4507 | 3. The instance flags are identical. | |
4508 | ||
4509 | It is important to check the instance flags, because we have seen | |
4510 | examples where the debug info contained definitions such as: | |
4511 | ||
4512 | "foo_t:t30=B31=xefoo_t:" | |
4513 | ||
4514 | In this case, we have created an undefined type named "foo_t" whose | |
4515 | instance flags is null (when processing "xefoo_t"), and then created | |
4516 | another type with the same name, but with different instance flags | |
4517 | ('B' means volatile). I think that the definition above is wrong, | |
4518 | since the same type cannot be volatile and non-volatile at the same | |
4519 | time, but we need to be able to cope with it when it happens. The | |
4520 | approach taken here is to treat these two types as different. */ | |
4521 | ||
c906108c SS |
4522 | for (type = undef_types; type < undef_types + undef_types_length; type++) |
4523 | { | |
4524 | switch (TYPE_CODE (*type)) | |
4525 | { | |
4526 | ||
c5aa993b JM |
4527 | case TYPE_CODE_STRUCT: |
4528 | case TYPE_CODE_UNION: | |
4529 | case TYPE_CODE_ENUM: | |
c906108c SS |
4530 | { |
4531 | /* Check if it has been defined since. Need to do this here | |
4532 | as well as in check_typedef to deal with the (legitimate in | |
4533 | C though not C++) case of several types with the same name | |
4534 | in different source files. */ | |
74a9bb82 | 4535 | if (TYPE_STUB (*type)) |
c906108c SS |
4536 | { |
4537 | struct pending *ppt; | |
4538 | int i; | |
c378eb4e | 4539 | /* Name of the type, without "struct" or "union". */ |
e86ca25f | 4540 | const char *type_name = TYPE_NAME (*type); |
c906108c | 4541 | |
fe978cb0 | 4542 | if (type_name == NULL) |
c906108c | 4543 | { |
b98664d3 | 4544 | complaint (_("need a type name")); |
c906108c SS |
4545 | break; |
4546 | } | |
4547 | for (ppt = file_symbols; ppt; ppt = ppt->next) | |
4548 | { | |
4549 | for (i = 0; i < ppt->nsyms; i++) | |
4550 | { | |
4551 | struct symbol *sym = ppt->symbol[i]; | |
c5aa993b | 4552 | |
c906108c | 4553 | if (SYMBOL_CLASS (sym) == LOC_TYPEDEF |
176620f1 | 4554 | && SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN |
c906108c SS |
4555 | && (TYPE_CODE (SYMBOL_TYPE (sym)) == |
4556 | TYPE_CODE (*type)) | |
9e386756 JB |
4557 | && (TYPE_INSTANCE_FLAGS (*type) == |
4558 | TYPE_INSTANCE_FLAGS (SYMBOL_TYPE (sym))) | |
3567439c | 4559 | && strcmp (SYMBOL_LINKAGE_NAME (sym), |
fe978cb0 | 4560 | type_name) == 0) |
13a393b0 | 4561 | replace_type (*type, SYMBOL_TYPE (sym)); |
c906108c SS |
4562 | } |
4563 | } | |
4564 | } | |
4565 | } | |
4566 | break; | |
4567 | ||
4568 | default: | |
4569 | { | |
b98664d3 | 4570 | complaint (_("forward-referenced types left unresolved, " |
e2e0b3e5 | 4571 | "type code %d."), |
23136709 | 4572 | TYPE_CODE (*type)); |
c906108c SS |
4573 | } |
4574 | break; | |
4575 | } | |
4576 | } | |
4577 | ||
4578 | undef_types_length = 0; | |
4579 | } | |
4580 | ||
bf362611 JB |
4581 | /* Try to fix all the undefined types we ecountered while processing |
4582 | this unit. */ | |
4583 | ||
4584 | void | |
0a0edcd5 | 4585 | cleanup_undefined_stabs_types (struct objfile *objfile) |
bf362611 JB |
4586 | { |
4587 | cleanup_undefined_types_1 (); | |
46bf5051 | 4588 | cleanup_undefined_types_noname (objfile); |
bf362611 JB |
4589 | } |
4590 | ||
c906108c SS |
4591 | /* Scan through all of the global symbols defined in the object file, |
4592 | assigning values to the debugging symbols that need to be assigned | |
4593 | to. Get these symbols from the minimal symbol table. */ | |
4594 | ||
4595 | void | |
fba45db2 | 4596 | scan_file_globals (struct objfile *objfile) |
c906108c SS |
4597 | { |
4598 | int hash; | |
4599 | struct minimal_symbol *msymbol; | |
507836c0 | 4600 | struct symbol *sym, *prev; |
c906108c SS |
4601 | struct objfile *resolve_objfile; |
4602 | ||
4603 | /* SVR4 based linkers copy referenced global symbols from shared | |
4604 | libraries to the main executable. | |
4605 | If we are scanning the symbols for a shared library, try to resolve | |
4606 | them from the minimal symbols of the main executable first. */ | |
4607 | ||
4608 | if (symfile_objfile && objfile != symfile_objfile) | |
4609 | resolve_objfile = symfile_objfile; | |
4610 | else | |
4611 | resolve_objfile = objfile; | |
4612 | ||
4613 | while (1) | |
4614 | { | |
4615 | /* Avoid expensive loop through all minimal symbols if there are | |
c5aa993b | 4616 | no unresolved symbols. */ |
c906108c SS |
4617 | for (hash = 0; hash < HASHSIZE; hash++) |
4618 | { | |
4619 | if (global_sym_chain[hash]) | |
4620 | break; | |
4621 | } | |
4622 | if (hash >= HASHSIZE) | |
4623 | return; | |
4624 | ||
3567439c | 4625 | ALL_OBJFILE_MSYMBOLS (resolve_objfile, msymbol) |
c906108c SS |
4626 | { |
4627 | QUIT; | |
4628 | ||
4629 | /* Skip static symbols. */ | |
4630 | switch (MSYMBOL_TYPE (msymbol)) | |
4631 | { | |
4632 | case mst_file_text: | |
4633 | case mst_file_data: | |
4634 | case mst_file_bss: | |
4635 | continue; | |
4636 | default: | |
4637 | break; | |
4638 | } | |
4639 | ||
4640 | prev = NULL; | |
4641 | ||
4642 | /* Get the hash index and check all the symbols | |
c378eb4e | 4643 | under that hash index. */ |
c906108c | 4644 | |
efd66ac6 | 4645 | hash = hashname (MSYMBOL_LINKAGE_NAME (msymbol)); |
c906108c SS |
4646 | |
4647 | for (sym = global_sym_chain[hash]; sym;) | |
4648 | { | |
efd66ac6 | 4649 | if (strcmp (MSYMBOL_LINKAGE_NAME (msymbol), |
3567439c | 4650 | SYMBOL_LINKAGE_NAME (sym)) == 0) |
c906108c | 4651 | { |
c906108c | 4652 | /* Splice this symbol out of the hash chain and |
c378eb4e | 4653 | assign the value we have to it. */ |
c906108c SS |
4654 | if (prev) |
4655 | { | |
4656 | SYMBOL_VALUE_CHAIN (prev) = SYMBOL_VALUE_CHAIN (sym); | |
4657 | } | |
4658 | else | |
4659 | { | |
4660 | global_sym_chain[hash] = SYMBOL_VALUE_CHAIN (sym); | |
4661 | } | |
c5aa993b | 4662 | |
c906108c SS |
4663 | /* Check to see whether we need to fix up a common block. */ |
4664 | /* Note: this code might be executed several times for | |
4665 | the same symbol if there are multiple references. */ | |
507836c0 | 4666 | if (sym) |
c906108c | 4667 | { |
507836c0 | 4668 | if (SYMBOL_CLASS (sym) == LOC_BLOCK) |
c906108c | 4669 | { |
507836c0 | 4670 | fix_common_block (sym, |
77e371c0 TT |
4671 | MSYMBOL_VALUE_ADDRESS (resolve_objfile, |
4672 | msymbol)); | |
c906108c SS |
4673 | } |
4674 | else | |
4675 | { | |
507836c0 | 4676 | SYMBOL_VALUE_ADDRESS (sym) |
77e371c0 | 4677 | = MSYMBOL_VALUE_ADDRESS (resolve_objfile, msymbol); |
c906108c | 4678 | } |
efd66ac6 | 4679 | SYMBOL_SECTION (sym) = MSYMBOL_SECTION (msymbol); |
c906108c SS |
4680 | } |
4681 | ||
c906108c SS |
4682 | if (prev) |
4683 | { | |
4684 | sym = SYMBOL_VALUE_CHAIN (prev); | |
4685 | } | |
4686 | else | |
4687 | { | |
4688 | sym = global_sym_chain[hash]; | |
4689 | } | |
4690 | } | |
4691 | else | |
4692 | { | |
4693 | prev = sym; | |
4694 | sym = SYMBOL_VALUE_CHAIN (sym); | |
4695 | } | |
4696 | } | |
4697 | } | |
4698 | if (resolve_objfile == objfile) | |
4699 | break; | |
4700 | resolve_objfile = objfile; | |
4701 | } | |
4702 | ||
4703 | /* Change the storage class of any remaining unresolved globals to | |
4704 | LOC_UNRESOLVED and remove them from the chain. */ | |
4705 | for (hash = 0; hash < HASHSIZE; hash++) | |
4706 | { | |
4707 | sym = global_sym_chain[hash]; | |
4708 | while (sym) | |
4709 | { | |
4710 | prev = sym; | |
4711 | sym = SYMBOL_VALUE_CHAIN (sym); | |
4712 | ||
4713 | /* Change the symbol address from the misleading chain value | |
4714 | to address zero. */ | |
4715 | SYMBOL_VALUE_ADDRESS (prev) = 0; | |
4716 | ||
4717 | /* Complain about unresolved common block symbols. */ | |
4718 | if (SYMBOL_CLASS (prev) == LOC_STATIC) | |
f1e6e072 | 4719 | SYMBOL_ACLASS_INDEX (prev) = LOC_UNRESOLVED; |
c906108c | 4720 | else |
b98664d3 | 4721 | complaint (_("%s: common block `%s' from " |
3e43a32a | 4722 | "global_sym_chain unresolved"), |
4262abfb | 4723 | objfile_name (objfile), SYMBOL_PRINT_NAME (prev)); |
c906108c SS |
4724 | } |
4725 | } | |
4726 | memset (global_sym_chain, 0, sizeof (global_sym_chain)); | |
4727 | } | |
4728 | ||
4729 | /* Initialize anything that needs initializing when starting to read | |
4730 | a fresh piece of a symbol file, e.g. reading in the stuff corresponding | |
4731 | to a psymtab. */ | |
4732 | ||
4733 | void | |
fba45db2 | 4734 | stabsread_init (void) |
c906108c SS |
4735 | { |
4736 | } | |
4737 | ||
4738 | /* Initialize anything that needs initializing when a completely new | |
4739 | symbol file is specified (not just adding some symbols from another | |
4740 | file, e.g. a shared library). */ | |
4741 | ||
4742 | void | |
fba45db2 | 4743 | stabsread_new_init (void) |
c906108c SS |
4744 | { |
4745 | /* Empty the hash table of global syms looking for values. */ | |
4746 | memset (global_sym_chain, 0, sizeof (global_sym_chain)); | |
4747 | } | |
4748 | ||
4749 | /* Initialize anything that needs initializing at the same time as | |
c378eb4e | 4750 | start_symtab() is called. */ |
c906108c | 4751 | |
c5aa993b | 4752 | void |
fba45db2 | 4753 | start_stabs (void) |
c906108c SS |
4754 | { |
4755 | global_stabs = NULL; /* AIX COFF */ | |
4756 | /* Leave FILENUM of 0 free for builtin types and this file's types. */ | |
4757 | n_this_object_header_files = 1; | |
4758 | type_vector_length = 0; | |
4759 | type_vector = (struct type **) 0; | |
4760 | ||
4761 | /* FIXME: If common_block_name is not already NULL, we should complain(). */ | |
4762 | common_block_name = NULL; | |
c906108c SS |
4763 | } |
4764 | ||
c378eb4e | 4765 | /* Call after end_symtab(). */ |
c906108c | 4766 | |
c5aa993b | 4767 | void |
fba45db2 | 4768 | end_stabs (void) |
c906108c SS |
4769 | { |
4770 | if (type_vector) | |
4771 | { | |
b8c9b27d | 4772 | xfree (type_vector); |
c906108c SS |
4773 | } |
4774 | type_vector = 0; | |
4775 | type_vector_length = 0; | |
4776 | previous_stab_code = 0; | |
4777 | } | |
4778 | ||
4779 | void | |
fba45db2 | 4780 | finish_global_stabs (struct objfile *objfile) |
c906108c SS |
4781 | { |
4782 | if (global_stabs) | |
4783 | { | |
4784 | patch_block_stabs (global_symbols, global_stabs, objfile); | |
b8c9b27d | 4785 | xfree (global_stabs); |
c906108c SS |
4786 | global_stabs = NULL; |
4787 | } | |
4788 | } | |
4789 | ||
7e1d63ec AF |
4790 | /* Find the end of the name, delimited by a ':', but don't match |
4791 | ObjC symbols which look like -[Foo bar::]:bla. */ | |
a121b7c1 PA |
4792 | static const char * |
4793 | find_name_end (const char *name) | |
7e1d63ec | 4794 | { |
a121b7c1 | 4795 | const char *s = name; |
433759f7 | 4796 | |
7e1d63ec AF |
4797 | if (s[0] == '-' || *s == '+') |
4798 | { | |
4799 | /* Must be an ObjC method symbol. */ | |
4800 | if (s[1] != '[') | |
4801 | { | |
8a3fe4f8 | 4802 | error (_("invalid symbol name \"%s\""), name); |
7e1d63ec AF |
4803 | } |
4804 | s = strchr (s, ']'); | |
4805 | if (s == NULL) | |
4806 | { | |
8a3fe4f8 | 4807 | error (_("invalid symbol name \"%s\""), name); |
7e1d63ec AF |
4808 | } |
4809 | return strchr (s, ':'); | |
4810 | } | |
4811 | else | |
4812 | { | |
4813 | return strchr (s, ':'); | |
4814 | } | |
4815 | } | |
4816 | ||
c378eb4e | 4817 | /* Initializer for this module. */ |
c906108c SS |
4818 | |
4819 | void | |
fba45db2 | 4820 | _initialize_stabsread (void) |
c906108c | 4821 | { |
46bf5051 UW |
4822 | rs6000_builtin_type_data = register_objfile_data (); |
4823 | ||
c906108c SS |
4824 | undef_types_allocated = 20; |
4825 | undef_types_length = 0; | |
8d749320 | 4826 | undef_types = XNEWVEC (struct type *, undef_types_allocated); |
bf362611 JB |
4827 | |
4828 | noname_undefs_allocated = 20; | |
4829 | noname_undefs_length = 0; | |
8d749320 | 4830 | noname_undefs = XNEWVEC (struct nat, noname_undefs_allocated); |
f1e6e072 TT |
4831 | |
4832 | stab_register_index = register_symbol_register_impl (LOC_REGISTER, | |
4833 | &stab_register_funcs); | |
4834 | stab_regparm_index = register_symbol_register_impl (LOC_REGPARM_ADDR, | |
4835 | &stab_register_funcs); | |
c906108c | 4836 | } |