Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Support routines for decoding "stabs" debugging information format. |
cf5b2f1b | 2 | |
42a4f53d | 3 | Copyright (C) 1986-2019 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 10 | (at your option) any later version. |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b | 17 | You should have received a copy of the GNU General Public License |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
19 | |
20 | /* Support routines for reading and decoding debugging information in | |
1736a7bd PA |
21 | the "stabs" format. This format is used by some systems that use |
22 | COFF or ELF where the stabs data is placed in a special section (as | |
23 | well as with many old systems that used the a.out object file | |
24 | format). Avoid placing any object file format specific code in | |
25 | this file. */ | |
c906108c SS |
26 | |
27 | #include "defs.h" | |
c906108c | 28 | #include "bfd.h" |
04ea0df1 | 29 | #include "gdb_obstack.h" |
c906108c SS |
30 | #include "symtab.h" |
31 | #include "gdbtypes.h" | |
32 | #include "expression.h" | |
33 | #include "symfile.h" | |
34 | #include "objfiles.h" | |
3e43a32a | 35 | #include "aout/stab_gnu.h" /* We always use GNU stabs, not native. */ |
c906108c SS |
36 | #include "libaout.h" |
37 | #include "aout/aout64.h" | |
38 | #include "gdb-stabs.h" | |
0baae8db | 39 | #include "buildsym-legacy.h" |
c906108c SS |
40 | #include "complaints.h" |
41 | #include "demangle.h" | |
50f182aa | 42 | #include "gdb-demangle.h" |
c906108c | 43 | #include "language.h" |
f69fdf9b | 44 | #include "target-float.h" |
de17c821 DJ |
45 | #include "cp-abi.h" |
46 | #include "cp-support.h" | |
c906108c SS |
47 | #include <ctype.h> |
48 | ||
d65d5705 TT |
49 | #include "stabsread.h" |
50 | ||
51 | /* See stabsread.h for these globals. */ | |
52 | unsigned int symnum; | |
53 | const char *(*next_symbol_text_func) (struct objfile *); | |
54 | unsigned char processing_gcc_compilation; | |
55 | int within_function; | |
56 | struct symbol *global_sym_chain[HASHSIZE]; | |
57 | struct pending_stabs *global_stabs; | |
58 | int previous_stab_code; | |
59 | int *this_object_header_files; | |
60 | int n_this_object_header_files; | |
61 | int n_allocated_this_object_header_files; | |
c906108c | 62 | |
52059ffd TT |
63 | struct nextfield |
64 | { | |
65 | struct nextfield *next; | |
66 | ||
67 | /* This is the raw visibility from the stab. It is not checked | |
68 | for being one of the visibilities we recognize, so code which | |
69 | examines this field better be able to deal. */ | |
70 | int visibility; | |
71 | ||
72 | struct field field; | |
73 | }; | |
74 | ||
75 | struct next_fnfieldlist | |
76 | { | |
77 | struct next_fnfieldlist *next; | |
78 | struct fn_fieldlist fn_fieldlist; | |
79 | }; | |
80 | ||
c906108c SS |
81 | /* The routines that read and process a complete stabs for a C struct or |
82 | C++ class pass lists of data member fields and lists of member function | |
83 | fields in an instance of a field_info structure, as defined below. | |
84 | This is part of some reorganization of low level C++ support and is | |
c378eb4e | 85 | expected to eventually go away... (FIXME) */ |
c906108c | 86 | |
61b30099 | 87 | struct stab_field_info |
c5aa993b | 88 | { |
61b30099 TT |
89 | struct nextfield *list = nullptr; |
90 | struct next_fnfieldlist *fnlist = nullptr; | |
91 | ||
92 | auto_obstack obstack; | |
c5aa993b | 93 | }; |
c906108c SS |
94 | |
95 | static void | |
61b30099 | 96 | read_one_struct_field (struct stab_field_info *, const char **, const char *, |
a14ed312 | 97 | struct type *, struct objfile *); |
c906108c | 98 | |
a14ed312 | 99 | static struct type *dbx_alloc_type (int[2], struct objfile *); |
c906108c | 100 | |
a121b7c1 | 101 | static long read_huge_number (const char **, int, int *, int); |
c906108c | 102 | |
a121b7c1 | 103 | static struct type *error_type (const char **, struct objfile *); |
c906108c SS |
104 | |
105 | static void | |
a14ed312 KB |
106 | patch_block_stabs (struct pending *, struct pending_stabs *, |
107 | struct objfile *); | |
c906108c | 108 | |
46cb6474 | 109 | static void fix_common_block (struct symbol *, CORE_ADDR); |
c906108c | 110 | |
a121b7c1 | 111 | static int read_type_number (const char **, int *); |
c906108c | 112 | |
a121b7c1 | 113 | static struct type *read_type (const char **, struct objfile *); |
a7a48797 | 114 | |
a121b7c1 PA |
115 | static struct type *read_range_type (const char **, int[2], |
116 | int, struct objfile *); | |
c906108c | 117 | |
a121b7c1 PA |
118 | static struct type *read_sun_builtin_type (const char **, |
119 | int[2], struct objfile *); | |
c906108c | 120 | |
a121b7c1 | 121 | static struct type *read_sun_floating_type (const char **, int[2], |
a14ed312 | 122 | struct objfile *); |
c906108c | 123 | |
a121b7c1 | 124 | static struct type *read_enum_type (const char **, struct type *, struct objfile *); |
c906108c | 125 | |
46bf5051 | 126 | static struct type *rs6000_builtin_type (int, struct objfile *); |
c906108c SS |
127 | |
128 | static int | |
61b30099 | 129 | read_member_functions (struct stab_field_info *, const char **, struct type *, |
a14ed312 | 130 | struct objfile *); |
c906108c SS |
131 | |
132 | static int | |
61b30099 | 133 | read_struct_fields (struct stab_field_info *, const char **, struct type *, |
a14ed312 | 134 | struct objfile *); |
c906108c SS |
135 | |
136 | static int | |
61b30099 | 137 | read_baseclasses (struct stab_field_info *, const char **, struct type *, |
a14ed312 | 138 | struct objfile *); |
c906108c SS |
139 | |
140 | static int | |
61b30099 | 141 | read_tilde_fields (struct stab_field_info *, const char **, struct type *, |
a14ed312 | 142 | struct objfile *); |
c906108c | 143 | |
61b30099 | 144 | static int attach_fn_fields_to_type (struct stab_field_info *, struct type *); |
c906108c | 145 | |
61b30099 | 146 | static int attach_fields_to_type (struct stab_field_info *, struct type *, |
570b8f7c | 147 | struct objfile *); |
c906108c | 148 | |
a121b7c1 | 149 | static struct type *read_struct_type (const char **, struct type *, |
2ae1c2d2 | 150 | enum type_code, |
a14ed312 | 151 | struct objfile *); |
c906108c | 152 | |
a121b7c1 | 153 | static struct type *read_array_type (const char **, struct type *, |
a14ed312 | 154 | struct objfile *); |
c906108c | 155 | |
a121b7c1 PA |
156 | static struct field *read_args (const char **, int, struct objfile *, |
157 | int *, int *); | |
c906108c | 158 | |
bf362611 | 159 | static void add_undefined_type (struct type *, int[2]); |
a7a48797 | 160 | |
c906108c | 161 | static int |
61b30099 | 162 | read_cpp_abbrev (struct stab_field_info *, const char **, struct type *, |
a14ed312 | 163 | struct objfile *); |
c906108c | 164 | |
a121b7c1 | 165 | static const char *find_name_end (const char *name); |
7e1d63ec | 166 | |
a121b7c1 | 167 | static int process_reference (const char **string); |
c906108c | 168 | |
a14ed312 | 169 | void stabsread_clear_cache (void); |
7be570e7 | 170 | |
8343f86c DJ |
171 | static const char vptr_name[] = "_vptr$"; |
172 | static const char vb_name[] = "_vb$"; | |
c906108c | 173 | |
23136709 KB |
174 | static void |
175 | invalid_cpp_abbrev_complaint (const char *arg1) | |
176 | { | |
b98664d3 | 177 | complaint (_("invalid C++ abbreviation `%s'"), arg1); |
23136709 | 178 | } |
c906108c | 179 | |
23136709 | 180 | static void |
49b0b195 | 181 | reg_value_complaint (int regnum, int num_regs, const char *sym) |
23136709 | 182 | { |
b98664d3 | 183 | complaint (_("bad register number %d (max %d) in symbol %s"), |
49b0b195 | 184 | regnum, num_regs - 1, sym); |
23136709 | 185 | } |
c906108c | 186 | |
23136709 KB |
187 | static void |
188 | stabs_general_complaint (const char *arg1) | |
189 | { | |
b98664d3 | 190 | complaint ("%s", arg1); |
23136709 | 191 | } |
c906108c | 192 | |
c906108c SS |
193 | /* Make a list of forward references which haven't been defined. */ |
194 | ||
195 | static struct type **undef_types; | |
196 | static int undef_types_allocated; | |
197 | static int undef_types_length; | |
198 | static struct symbol *current_symbol = NULL; | |
199 | ||
bf362611 JB |
200 | /* Make a list of nameless types that are undefined. |
201 | This happens when another type is referenced by its number | |
c378eb4e | 202 | before this type is actually defined. For instance "t(0,1)=k(0,2)" |
bf362611 JB |
203 | and type (0,2) is defined only later. */ |
204 | ||
205 | struct nat | |
206 | { | |
207 | int typenums[2]; | |
208 | struct type *type; | |
209 | }; | |
210 | static struct nat *noname_undefs; | |
211 | static int noname_undefs_allocated; | |
212 | static int noname_undefs_length; | |
213 | ||
c906108c SS |
214 | /* Check for and handle cretinous stabs symbol name continuation! */ |
215 | #define STABS_CONTINUE(pp,objfile) \ | |
216 | do { \ | |
217 | if (**(pp) == '\\' || (**(pp) == '?' && (*(pp))[1] == '\0')) \ | |
218 | *(pp) = next_symbol_text (objfile); \ | |
219 | } while (0) | |
fc474241 DE |
220 | |
221 | /* Vector of types defined so far, indexed by their type numbers. | |
222 | (In newer sun systems, dbx uses a pair of numbers in parens, | |
223 | as in "(SUBFILENUM,NUMWITHINSUBFILE)". | |
224 | Then these numbers must be translated through the type_translations | |
225 | hash table to get the index into the type vector.) */ | |
226 | ||
227 | static struct type **type_vector; | |
228 | ||
229 | /* Number of elements allocated for type_vector currently. */ | |
230 | ||
231 | static int type_vector_length; | |
232 | ||
233 | /* Initial size of type vector. Is realloc'd larger if needed, and | |
234 | realloc'd down to the size actually used, when completed. */ | |
235 | ||
236 | #define INITIAL_TYPE_VECTOR_LENGTH 160 | |
c906108c | 237 | \f |
c906108c SS |
238 | |
239 | /* Look up a dbx type-number pair. Return the address of the slot | |
240 | where the type for that number-pair is stored. | |
241 | The number-pair is in TYPENUMS. | |
242 | ||
243 | This can be used for finding the type associated with that pair | |
244 | or for associating a new type with the pair. */ | |
245 | ||
a7a48797 | 246 | static struct type ** |
46bf5051 | 247 | dbx_lookup_type (int typenums[2], struct objfile *objfile) |
c906108c | 248 | { |
52f0bd74 AC |
249 | int filenum = typenums[0]; |
250 | int index = typenums[1]; | |
c906108c | 251 | unsigned old_len; |
52f0bd74 AC |
252 | int real_filenum; |
253 | struct header_file *f; | |
c906108c SS |
254 | int f_orig_length; |
255 | ||
256 | if (filenum == -1) /* -1,-1 is for temporary types. */ | |
257 | return 0; | |
258 | ||
259 | if (filenum < 0 || filenum >= n_this_object_header_files) | |
260 | { | |
b98664d3 | 261 | complaint (_("Invalid symbol data: type number " |
3e43a32a | 262 | "(%d,%d) out of range at symtab pos %d."), |
23136709 | 263 | filenum, index, symnum); |
c906108c SS |
264 | goto error_return; |
265 | } | |
266 | ||
267 | if (filenum == 0) | |
268 | { | |
269 | if (index < 0) | |
270 | { | |
271 | /* Caller wants address of address of type. We think | |
272 | that negative (rs6k builtin) types will never appear as | |
273 | "lvalues", (nor should they), so we stuff the real type | |
274 | pointer into a temp, and return its address. If referenced, | |
275 | this will do the right thing. */ | |
276 | static struct type *temp_type; | |
277 | ||
46bf5051 | 278 | temp_type = rs6000_builtin_type (index, objfile); |
c906108c SS |
279 | return &temp_type; |
280 | } | |
281 | ||
282 | /* Type is defined outside of header files. | |
c5aa993b | 283 | Find it in this object file's type vector. */ |
c906108c SS |
284 | if (index >= type_vector_length) |
285 | { | |
286 | old_len = type_vector_length; | |
287 | if (old_len == 0) | |
288 | { | |
289 | type_vector_length = INITIAL_TYPE_VECTOR_LENGTH; | |
8d749320 | 290 | type_vector = XNEWVEC (struct type *, type_vector_length); |
c906108c SS |
291 | } |
292 | while (index >= type_vector_length) | |
293 | { | |
294 | type_vector_length *= 2; | |
295 | } | |
296 | type_vector = (struct type **) | |
297 | xrealloc ((char *) type_vector, | |
298 | (type_vector_length * sizeof (struct type *))); | |
299 | memset (&type_vector[old_len], 0, | |
300 | (type_vector_length - old_len) * sizeof (struct type *)); | |
c906108c SS |
301 | } |
302 | return (&type_vector[index]); | |
303 | } | |
304 | else | |
305 | { | |
306 | real_filenum = this_object_header_files[filenum]; | |
307 | ||
46bf5051 | 308 | if (real_filenum >= N_HEADER_FILES (objfile)) |
c906108c | 309 | { |
46bf5051 | 310 | static struct type *temp_type; |
c906108c | 311 | |
8a3fe4f8 | 312 | warning (_("GDB internal error: bad real_filenum")); |
c906108c SS |
313 | |
314 | error_return: | |
46bf5051 UW |
315 | temp_type = objfile_type (objfile)->builtin_error; |
316 | return &temp_type; | |
c906108c SS |
317 | } |
318 | ||
46bf5051 | 319 | f = HEADER_FILES (objfile) + real_filenum; |
c906108c SS |
320 | |
321 | f_orig_length = f->length; | |
322 | if (index >= f_orig_length) | |
323 | { | |
324 | while (index >= f->length) | |
325 | { | |
326 | f->length *= 2; | |
327 | } | |
328 | f->vector = (struct type **) | |
329 | xrealloc ((char *) f->vector, f->length * sizeof (struct type *)); | |
330 | memset (&f->vector[f_orig_length], 0, | |
331 | (f->length - f_orig_length) * sizeof (struct type *)); | |
332 | } | |
333 | return (&f->vector[index]); | |
334 | } | |
335 | } | |
336 | ||
337 | /* Make sure there is a type allocated for type numbers TYPENUMS | |
338 | and return the type object. | |
339 | This can create an empty (zeroed) type object. | |
340 | TYPENUMS may be (-1, -1) to return a new type object that is not | |
c378eb4e | 341 | put into the type vector, and so may not be referred to by number. */ |
c906108c SS |
342 | |
343 | static struct type * | |
35a2f538 | 344 | dbx_alloc_type (int typenums[2], struct objfile *objfile) |
c906108c | 345 | { |
52f0bd74 | 346 | struct type **type_addr; |
c906108c SS |
347 | |
348 | if (typenums[0] == -1) | |
349 | { | |
350 | return (alloc_type (objfile)); | |
351 | } | |
352 | ||
46bf5051 | 353 | type_addr = dbx_lookup_type (typenums, objfile); |
c906108c SS |
354 | |
355 | /* If we are referring to a type not known at all yet, | |
356 | allocate an empty type for it. | |
357 | We will fill it in later if we find out how. */ | |
358 | if (*type_addr == 0) | |
359 | { | |
360 | *type_addr = alloc_type (objfile); | |
361 | } | |
362 | ||
363 | return (*type_addr); | |
364 | } | |
365 | ||
9b790ce7 UW |
366 | /* Allocate a floating-point type of size BITS. */ |
367 | ||
368 | static struct type * | |
369 | dbx_init_float_type (struct objfile *objfile, int bits) | |
370 | { | |
371 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
372 | const struct floatformat **format; | |
373 | struct type *type; | |
374 | ||
375 | format = gdbarch_floatformat_for_type (gdbarch, NULL, bits); | |
376 | if (format) | |
377 | type = init_float_type (objfile, bits, NULL, format); | |
378 | else | |
77b7c781 | 379 | type = init_type (objfile, TYPE_CODE_ERROR, bits, NULL); |
9b790ce7 UW |
380 | |
381 | return type; | |
382 | } | |
383 | ||
c906108c | 384 | /* for all the stabs in a given stab vector, build appropriate types |
c378eb4e | 385 | and fix their symbols in given symbol vector. */ |
c906108c SS |
386 | |
387 | static void | |
fba45db2 KB |
388 | patch_block_stabs (struct pending *symbols, struct pending_stabs *stabs, |
389 | struct objfile *objfile) | |
c906108c SS |
390 | { |
391 | int ii; | |
392 | char *name; | |
a121b7c1 | 393 | const char *pp; |
c906108c SS |
394 | struct symbol *sym; |
395 | ||
396 | if (stabs) | |
397 | { | |
c906108c | 398 | /* for all the stab entries, find their corresponding symbols and |
c378eb4e | 399 | patch their types! */ |
c5aa993b | 400 | |
c906108c SS |
401 | for (ii = 0; ii < stabs->count; ++ii) |
402 | { | |
403 | name = stabs->stab[ii]; | |
c5aa993b | 404 | pp = (char *) strchr (name, ':'); |
8fb822e0 | 405 | gdb_assert (pp); /* Must find a ':' or game's over. */ |
c906108c SS |
406 | while (pp[1] == ':') |
407 | { | |
c5aa993b JM |
408 | pp += 2; |
409 | pp = (char *) strchr (pp, ':'); | |
c906108c | 410 | } |
c5aa993b | 411 | sym = find_symbol_in_list (symbols, name, pp - name); |
c906108c SS |
412 | if (!sym) |
413 | { | |
414 | /* FIXME-maybe: it would be nice if we noticed whether | |
c5aa993b JM |
415 | the variable was defined *anywhere*, not just whether |
416 | it is defined in this compilation unit. But neither | |
417 | xlc or GCC seem to need such a definition, and until | |
418 | we do psymtabs (so that the minimal symbols from all | |
419 | compilation units are available now), I'm not sure | |
420 | how to get the information. */ | |
c906108c SS |
421 | |
422 | /* On xcoff, if a global is defined and never referenced, | |
c5aa993b JM |
423 | ld will remove it from the executable. There is then |
424 | a N_GSYM stab for it, but no regular (C_EXT) symbol. */ | |
e623cf5d | 425 | sym = allocate_symbol (objfile); |
176620f1 | 426 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
f1e6e072 | 427 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
3567439c | 428 | SYMBOL_SET_LINKAGE_NAME |
224c3ddb SM |
429 | (sym, (char *) obstack_copy0 (&objfile->objfile_obstack, |
430 | name, pp - name)); | |
c906108c | 431 | pp += 2; |
c5aa993b | 432 | if (*(pp - 1) == 'F' || *(pp - 1) == 'f') |
c906108c SS |
433 | { |
434 | /* I don't think the linker does this with functions, | |
435 | so as far as I know this is never executed. | |
436 | But it doesn't hurt to check. */ | |
437 | SYMBOL_TYPE (sym) = | |
438 | lookup_function_type (read_type (&pp, objfile)); | |
439 | } | |
440 | else | |
441 | { | |
442 | SYMBOL_TYPE (sym) = read_type (&pp, objfile); | |
443 | } | |
e148f09d | 444 | add_symbol_to_list (sym, get_global_symbols ()); |
c906108c SS |
445 | } |
446 | else | |
447 | { | |
448 | pp += 2; | |
c5aa993b | 449 | if (*(pp - 1) == 'F' || *(pp - 1) == 'f') |
c906108c SS |
450 | { |
451 | SYMBOL_TYPE (sym) = | |
452 | lookup_function_type (read_type (&pp, objfile)); | |
453 | } | |
454 | else | |
455 | { | |
456 | SYMBOL_TYPE (sym) = read_type (&pp, objfile); | |
457 | } | |
458 | } | |
459 | } | |
460 | } | |
461 | } | |
c906108c | 462 | \f |
c5aa993b | 463 | |
c906108c SS |
464 | /* Read a number by which a type is referred to in dbx data, |
465 | or perhaps read a pair (FILENUM, TYPENUM) in parentheses. | |
466 | Just a single number N is equivalent to (0,N). | |
467 | Return the two numbers by storing them in the vector TYPENUMS. | |
468 | TYPENUMS will then be used as an argument to dbx_lookup_type. | |
469 | ||
470 | Returns 0 for success, -1 for error. */ | |
471 | ||
472 | static int | |
a121b7c1 | 473 | read_type_number (const char **pp, int *typenums) |
c906108c SS |
474 | { |
475 | int nbits; | |
433759f7 | 476 | |
c906108c SS |
477 | if (**pp == '(') |
478 | { | |
479 | (*pp)++; | |
94e10a22 | 480 | typenums[0] = read_huge_number (pp, ',', &nbits, 0); |
c5aa993b JM |
481 | if (nbits != 0) |
482 | return -1; | |
94e10a22 | 483 | typenums[1] = read_huge_number (pp, ')', &nbits, 0); |
c5aa993b JM |
484 | if (nbits != 0) |
485 | return -1; | |
c906108c SS |
486 | } |
487 | else | |
488 | { | |
489 | typenums[0] = 0; | |
94e10a22 | 490 | typenums[1] = read_huge_number (pp, 0, &nbits, 0); |
c5aa993b JM |
491 | if (nbits != 0) |
492 | return -1; | |
c906108c SS |
493 | } |
494 | return 0; | |
495 | } | |
c906108c | 496 | \f |
c5aa993b | 497 | |
c906108c SS |
498 | #define VISIBILITY_PRIVATE '0' /* Stabs character for private field */ |
499 | #define VISIBILITY_PROTECTED '1' /* Stabs character for protected fld */ | |
500 | #define VISIBILITY_PUBLIC '2' /* Stabs character for public field */ | |
501 | #define VISIBILITY_IGNORE '9' /* Optimized out or zero length */ | |
502 | ||
c906108c | 503 | /* Structure for storing pointers to reference definitions for fast lookup |
c378eb4e | 504 | during "process_later". */ |
c906108c SS |
505 | |
506 | struct ref_map | |
507 | { | |
a121b7c1 | 508 | const char *stabs; |
c906108c SS |
509 | CORE_ADDR value; |
510 | struct symbol *sym; | |
511 | }; | |
512 | ||
513 | #define MAX_CHUNK_REFS 100 | |
514 | #define REF_CHUNK_SIZE (MAX_CHUNK_REFS * sizeof (struct ref_map)) | |
515 | #define REF_MAP_SIZE(ref_chunk) ((ref_chunk) * REF_CHUNK_SIZE) | |
516 | ||
c5aa993b | 517 | static struct ref_map *ref_map; |
c906108c | 518 | |
c378eb4e | 519 | /* Ptr to free cell in chunk's linked list. */ |
c5aa993b | 520 | static int ref_count = 0; |
c906108c | 521 | |
c378eb4e | 522 | /* Number of chunks malloced. */ |
c906108c SS |
523 | static int ref_chunk = 0; |
524 | ||
7be570e7 | 525 | /* This file maintains a cache of stabs aliases found in the symbol |
c378eb4e MS |
526 | table. If the symbol table changes, this cache must be cleared |
527 | or we are left holding onto data in invalid obstacks. */ | |
7be570e7 | 528 | void |
fba45db2 | 529 | stabsread_clear_cache (void) |
7be570e7 JM |
530 | { |
531 | ref_count = 0; | |
532 | ref_chunk = 0; | |
533 | } | |
534 | ||
c906108c SS |
535 | /* Create array of pointers mapping refids to symbols and stab strings. |
536 | Add pointers to reference definition symbols and/or their values as we | |
c378eb4e MS |
537 | find them, using their reference numbers as our index. |
538 | These will be used later when we resolve references. */ | |
c906108c | 539 | void |
a121b7c1 | 540 | ref_add (int refnum, struct symbol *sym, const char *stabs, CORE_ADDR value) |
c906108c SS |
541 | { |
542 | if (ref_count == 0) | |
543 | ref_chunk = 0; | |
544 | if (refnum >= ref_count) | |
545 | ref_count = refnum + 1; | |
546 | if (ref_count > ref_chunk * MAX_CHUNK_REFS) | |
547 | { | |
c5aa993b | 548 | int new_slots = ref_count - ref_chunk * MAX_CHUNK_REFS; |
c906108c | 549 | int new_chunks = new_slots / MAX_CHUNK_REFS + 1; |
433759f7 | 550 | |
c906108c SS |
551 | ref_map = (struct ref_map *) |
552 | xrealloc (ref_map, REF_MAP_SIZE (ref_chunk + new_chunks)); | |
433759f7 MS |
553 | memset (ref_map + ref_chunk * MAX_CHUNK_REFS, 0, |
554 | new_chunks * REF_CHUNK_SIZE); | |
c906108c SS |
555 | ref_chunk += new_chunks; |
556 | } | |
557 | ref_map[refnum].stabs = stabs; | |
558 | ref_map[refnum].sym = sym; | |
559 | ref_map[refnum].value = value; | |
560 | } | |
561 | ||
562 | /* Return defined sym for the reference REFNUM. */ | |
563 | struct symbol * | |
fba45db2 | 564 | ref_search (int refnum) |
c906108c SS |
565 | { |
566 | if (refnum < 0 || refnum > ref_count) | |
567 | return 0; | |
568 | return ref_map[refnum].sym; | |
569 | } | |
570 | ||
c906108c SS |
571 | /* Parse a reference id in STRING and return the resulting |
572 | reference number. Move STRING beyond the reference id. */ | |
573 | ||
c5aa993b | 574 | static int |
a121b7c1 | 575 | process_reference (const char **string) |
c906108c | 576 | { |
a121b7c1 | 577 | const char *p; |
c906108c SS |
578 | int refnum = 0; |
579 | ||
c5aa993b JM |
580 | if (**string != '#') |
581 | return 0; | |
582 | ||
c906108c SS |
583 | /* Advance beyond the initial '#'. */ |
584 | p = *string + 1; | |
585 | ||
c378eb4e | 586 | /* Read number as reference id. */ |
c906108c SS |
587 | while (*p && isdigit (*p)) |
588 | { | |
589 | refnum = refnum * 10 + *p - '0'; | |
590 | p++; | |
591 | } | |
592 | *string = p; | |
593 | return refnum; | |
594 | } | |
595 | ||
596 | /* If STRING defines a reference, store away a pointer to the reference | |
597 | definition for later use. Return the reference number. */ | |
598 | ||
599 | int | |
a121b7c1 | 600 | symbol_reference_defined (const char **string) |
c906108c | 601 | { |
a121b7c1 | 602 | const char *p = *string; |
c906108c SS |
603 | int refnum = 0; |
604 | ||
605 | refnum = process_reference (&p); | |
606 | ||
c378eb4e | 607 | /* Defining symbols end in '='. */ |
c5aa993b | 608 | if (*p == '=') |
c906108c | 609 | { |
c378eb4e | 610 | /* Symbol is being defined here. */ |
c906108c SS |
611 | *string = p + 1; |
612 | return refnum; | |
613 | } | |
614 | else | |
615 | { | |
c378eb4e | 616 | /* Must be a reference. Either the symbol has already been defined, |
c906108c SS |
617 | or this is a forward reference to it. */ |
618 | *string = p; | |
619 | return -1; | |
620 | } | |
621 | } | |
622 | ||
768a979c UW |
623 | static int |
624 | stab_reg_to_regnum (struct symbol *sym, struct gdbarch *gdbarch) | |
625 | { | |
626 | int regno = gdbarch_stab_reg_to_regnum (gdbarch, SYMBOL_VALUE (sym)); | |
627 | ||
f6efe3f8 | 628 | if (regno < 0 || regno >= gdbarch_num_cooked_regs (gdbarch)) |
768a979c | 629 | { |
f6efe3f8 | 630 | reg_value_complaint (regno, gdbarch_num_cooked_regs (gdbarch), |
768a979c UW |
631 | SYMBOL_PRINT_NAME (sym)); |
632 | ||
c378eb4e | 633 | regno = gdbarch_sp_regnum (gdbarch); /* Known safe, though useless. */ |
768a979c UW |
634 | } |
635 | ||
636 | return regno; | |
637 | } | |
638 | ||
639 | static const struct symbol_register_ops stab_register_funcs = { | |
640 | stab_reg_to_regnum | |
641 | }; | |
642 | ||
f1e6e072 TT |
643 | /* The "aclass" indices for computed symbols. */ |
644 | ||
645 | static int stab_register_index; | |
646 | static int stab_regparm_index; | |
647 | ||
c906108c | 648 | struct symbol * |
a121b7c1 | 649 | define_symbol (CORE_ADDR valu, const char *string, int desc, int type, |
fba45db2 | 650 | struct objfile *objfile) |
c906108c | 651 | { |
5e2b427d | 652 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
52f0bd74 | 653 | struct symbol *sym; |
a121b7c1 | 654 | const char *p = find_name_end (string); |
c906108c SS |
655 | int deftype; |
656 | int synonym = 0; | |
52f0bd74 | 657 | int i; |
c906108c SS |
658 | |
659 | /* We would like to eliminate nameless symbols, but keep their types. | |
660 | E.g. stab entry ":t10=*2" should produce a type 10, which is a pointer | |
c378eb4e MS |
661 | to type 2, but, should not create a symbol to address that type. Since |
662 | the symbol will be nameless, there is no way any user can refer to it. */ | |
c906108c SS |
663 | |
664 | int nameless; | |
665 | ||
666 | /* Ignore syms with empty names. */ | |
667 | if (string[0] == 0) | |
668 | return 0; | |
669 | ||
c378eb4e | 670 | /* Ignore old-style symbols from cc -go. */ |
c906108c SS |
671 | if (p == 0) |
672 | return 0; | |
673 | ||
674 | while (p[1] == ':') | |
675 | { | |
c5aa993b JM |
676 | p += 2; |
677 | p = strchr (p, ':'); | |
681c238c MS |
678 | if (p == NULL) |
679 | { | |
b98664d3 | 680 | complaint ( |
681c238c MS |
681 | _("Bad stabs string '%s'"), string); |
682 | return NULL; | |
683 | } | |
c906108c SS |
684 | } |
685 | ||
686 | /* If a nameless stab entry, all we need is the type, not the symbol. | |
687 | e.g. ":t10=*2" or a nameless enum like " :T16=ered:0,green:1,blue:2,;" */ | |
688 | nameless = (p == string || ((string[0] == ' ') && (string[1] == ':'))); | |
689 | ||
e623cf5d | 690 | current_symbol = sym = allocate_symbol (objfile); |
c906108c | 691 | |
c906108c SS |
692 | if (processing_gcc_compilation) |
693 | { | |
694 | /* GCC 2.x puts the line number in desc. SunOS apparently puts in the | |
c5aa993b JM |
695 | number of bytes occupied by a type or object, which we ignore. */ |
696 | SYMBOL_LINE (sym) = desc; | |
c906108c SS |
697 | } |
698 | else | |
699 | { | |
c5aa993b | 700 | SYMBOL_LINE (sym) = 0; /* unknown */ |
c906108c SS |
701 | } |
702 | ||
3c65e5b3 | 703 | SYMBOL_SET_LANGUAGE (sym, get_current_subfile ()->language, |
025ac414 PM |
704 | &objfile->objfile_obstack); |
705 | ||
c906108c SS |
706 | if (is_cplus_marker (string[0])) |
707 | { | |
708 | /* Special GNU C++ names. */ | |
709 | switch (string[1]) | |
710 | { | |
c5aa993b | 711 | case 't': |
1c9e8358 | 712 | SYMBOL_SET_LINKAGE_NAME (sym, "this"); |
c5aa993b | 713 | break; |
c906108c | 714 | |
c5aa993b | 715 | case 'v': /* $vtbl_ptr_type */ |
c5aa993b | 716 | goto normal; |
c906108c | 717 | |
c5aa993b | 718 | case 'e': |
1c9e8358 | 719 | SYMBOL_SET_LINKAGE_NAME (sym, "eh_throw"); |
c5aa993b | 720 | break; |
c906108c | 721 | |
c5aa993b JM |
722 | case '_': |
723 | /* This was an anonymous type that was never fixed up. */ | |
724 | goto normal; | |
c906108c | 725 | |
c5aa993b JM |
726 | case 'X': |
727 | /* SunPRO (3.0 at least) static variable encoding. */ | |
5e2b427d | 728 | if (gdbarch_static_transform_name_p (gdbarch)) |
149ad273 | 729 | goto normal; |
86a73007 | 730 | /* fall through */ |
c906108c | 731 | |
c5aa993b | 732 | default: |
b98664d3 | 733 | complaint (_("Unknown C++ symbol name `%s'"), |
23136709 | 734 | string); |
c378eb4e | 735 | goto normal; /* Do *something* with it. */ |
c906108c SS |
736 | } |
737 | } | |
c906108c SS |
738 | else |
739 | { | |
740 | normal: | |
2f408ecb PA |
741 | std::string new_name; |
742 | ||
df8a16a1 | 743 | if (SYMBOL_LANGUAGE (sym) == language_cplus) |
71c25dea | 744 | { |
224c3ddb | 745 | char *name = (char *) alloca (p - string + 1); |
433759f7 | 746 | |
71c25dea TT |
747 | memcpy (name, string, p - string); |
748 | name[p - string] = '\0'; | |
749 | new_name = cp_canonicalize_string (name); | |
71c25dea | 750 | } |
2f408ecb | 751 | if (!new_name.empty ()) |
71c25dea | 752 | { |
2f408ecb PA |
753 | SYMBOL_SET_NAMES (sym, |
754 | new_name.c_str (), new_name.length (), | |
755 | 1, objfile); | |
71c25dea TT |
756 | } |
757 | else | |
04a679b8 | 758 | SYMBOL_SET_NAMES (sym, string, p - string, 1, objfile); |
45c58896 SW |
759 | |
760 | if (SYMBOL_LANGUAGE (sym) == language_cplus) | |
80e649fc TT |
761 | cp_scan_for_anonymous_namespaces (get_buildsym_compunit (), sym, |
762 | objfile); | |
45c58896 | 763 | |
c906108c SS |
764 | } |
765 | p++; | |
766 | ||
767 | /* Determine the type of name being defined. */ | |
768 | #if 0 | |
769 | /* Getting GDB to correctly skip the symbol on an undefined symbol | |
770 | descriptor and not ever dump core is a very dodgy proposition if | |
771 | we do things this way. I say the acorn RISC machine can just | |
772 | fix their compiler. */ | |
773 | /* The Acorn RISC machine's compiler can put out locals that don't | |
774 | start with "234=" or "(3,4)=", so assume anything other than the | |
775 | deftypes we know how to handle is a local. */ | |
776 | if (!strchr ("cfFGpPrStTvVXCR", *p)) | |
777 | #else | |
778 | if (isdigit (*p) || *p == '(' || *p == '-') | |
779 | #endif | |
780 | deftype = 'l'; | |
781 | else | |
782 | deftype = *p++; | |
783 | ||
784 | switch (deftype) | |
785 | { | |
786 | case 'c': | |
787 | /* c is a special case, not followed by a type-number. | |
c5aa993b JM |
788 | SYMBOL:c=iVALUE for an integer constant symbol. |
789 | SYMBOL:c=rVALUE for a floating constant symbol. | |
790 | SYMBOL:c=eTYPE,INTVALUE for an enum constant symbol. | |
791 | e.g. "b:c=e6,0" for "const b = blob1" | |
792 | (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */ | |
c906108c SS |
793 | if (*p != '=') |
794 | { | |
f1e6e072 | 795 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
c906108c | 796 | SYMBOL_TYPE (sym) = error_type (&p, objfile); |
176620f1 | 797 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e148f09d | 798 | add_symbol_to_list (sym, get_file_symbols ()); |
c906108c SS |
799 | return sym; |
800 | } | |
801 | ++p; | |
802 | switch (*p++) | |
803 | { | |
804 | case 'r': | |
805 | { | |
4e38b386 | 806 | gdb_byte *dbl_valu; |
6ccb9162 | 807 | struct type *dbl_type; |
c906108c | 808 | |
46bf5051 | 809 | dbl_type = objfile_type (objfile)->builtin_double; |
224c3ddb SM |
810 | dbl_valu |
811 | = (gdb_byte *) obstack_alloc (&objfile->objfile_obstack, | |
812 | TYPE_LENGTH (dbl_type)); | |
f69fdf9b UW |
813 | |
814 | target_float_from_string (dbl_valu, dbl_type, std::string (p)); | |
6ccb9162 UW |
815 | |
816 | SYMBOL_TYPE (sym) = dbl_type; | |
c906108c | 817 | SYMBOL_VALUE_BYTES (sym) = dbl_valu; |
f1e6e072 | 818 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST_BYTES; |
c906108c SS |
819 | } |
820 | break; | |
821 | case 'i': | |
822 | { | |
823 | /* Defining integer constants this way is kind of silly, | |
824 | since 'e' constants allows the compiler to give not | |
825 | only the value, but the type as well. C has at least | |
826 | int, long, unsigned int, and long long as constant | |
827 | types; other languages probably should have at least | |
828 | unsigned as well as signed constants. */ | |
829 | ||
46bf5051 | 830 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_long; |
c906108c | 831 | SYMBOL_VALUE (sym) = atoi (p); |
f1e6e072 | 832 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
c906108c SS |
833 | } |
834 | break; | |
ec8a089a PM |
835 | |
836 | case 'c': | |
837 | { | |
838 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_char; | |
839 | SYMBOL_VALUE (sym) = atoi (p); | |
f1e6e072 | 840 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
ec8a089a PM |
841 | } |
842 | break; | |
843 | ||
844 | case 's': | |
845 | { | |
846 | struct type *range_type; | |
847 | int ind = 0; | |
848 | char quote = *p++; | |
ec8a089a PM |
849 | gdb_byte *string_local = (gdb_byte *) alloca (strlen (p)); |
850 | gdb_byte *string_value; | |
851 | ||
852 | if (quote != '\'' && quote != '"') | |
853 | { | |
f1e6e072 | 854 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
ec8a089a PM |
855 | SYMBOL_TYPE (sym) = error_type (&p, objfile); |
856 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; | |
e148f09d | 857 | add_symbol_to_list (sym, get_file_symbols ()); |
ec8a089a PM |
858 | return sym; |
859 | } | |
860 | ||
861 | /* Find matching quote, rejecting escaped quotes. */ | |
862 | while (*p && *p != quote) | |
863 | { | |
864 | if (*p == '\\' && p[1] == quote) | |
865 | { | |
866 | string_local[ind] = (gdb_byte) quote; | |
867 | ind++; | |
868 | p += 2; | |
869 | } | |
870 | else if (*p) | |
871 | { | |
872 | string_local[ind] = (gdb_byte) (*p); | |
873 | ind++; | |
874 | p++; | |
875 | } | |
876 | } | |
877 | if (*p != quote) | |
878 | { | |
f1e6e072 | 879 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
ec8a089a PM |
880 | SYMBOL_TYPE (sym) = error_type (&p, objfile); |
881 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; | |
e148f09d | 882 | add_symbol_to_list (sym, get_file_symbols ()); |
ec8a089a PM |
883 | return sym; |
884 | } | |
885 | ||
886 | /* NULL terminate the string. */ | |
887 | string_local[ind] = 0; | |
3e43a32a | 888 | range_type |
0c9c3474 SA |
889 | = create_static_range_type (NULL, |
890 | objfile_type (objfile)->builtin_int, | |
891 | 0, ind); | |
ec8a089a PM |
892 | SYMBOL_TYPE (sym) = create_array_type (NULL, |
893 | objfile_type (objfile)->builtin_char, | |
894 | range_type); | |
224c3ddb SM |
895 | string_value |
896 | = (gdb_byte *) obstack_alloc (&objfile->objfile_obstack, ind + 1); | |
ec8a089a PM |
897 | memcpy (string_value, string_local, ind + 1); |
898 | p++; | |
899 | ||
900 | SYMBOL_VALUE_BYTES (sym) = string_value; | |
f1e6e072 | 901 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST_BYTES; |
ec8a089a PM |
902 | } |
903 | break; | |
904 | ||
c906108c SS |
905 | case 'e': |
906 | /* SYMBOL:c=eTYPE,INTVALUE for a constant symbol whose value | |
907 | can be represented as integral. | |
908 | e.g. "b:c=e6,0" for "const b = blob1" | |
909 | (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */ | |
910 | { | |
f1e6e072 | 911 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
c906108c SS |
912 | SYMBOL_TYPE (sym) = read_type (&p, objfile); |
913 | ||
914 | if (*p != ',') | |
915 | { | |
916 | SYMBOL_TYPE (sym) = error_type (&p, objfile); | |
917 | break; | |
918 | } | |
919 | ++p; | |
920 | ||
921 | /* If the value is too big to fit in an int (perhaps because | |
922 | it is unsigned), or something like that, we silently get | |
923 | a bogus value. The type and everything else about it is | |
924 | correct. Ideally, we should be using whatever we have | |
925 | available for parsing unsigned and long long values, | |
926 | however. */ | |
927 | SYMBOL_VALUE (sym) = atoi (p); | |
928 | } | |
929 | break; | |
930 | default: | |
931 | { | |
f1e6e072 | 932 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
c906108c SS |
933 | SYMBOL_TYPE (sym) = error_type (&p, objfile); |
934 | } | |
935 | } | |
176620f1 | 936 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e148f09d | 937 | add_symbol_to_list (sym, get_file_symbols ()); |
c906108c SS |
938 | return sym; |
939 | ||
940 | case 'C': | |
941 | /* The name of a caught exception. */ | |
942 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
f1e6e072 | 943 | SYMBOL_ACLASS_INDEX (sym) = LOC_LABEL; |
176620f1 | 944 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c | 945 | SYMBOL_VALUE_ADDRESS (sym) = valu; |
e148f09d | 946 | add_symbol_to_list (sym, get_local_symbols ()); |
c906108c SS |
947 | break; |
948 | ||
949 | case 'f': | |
950 | /* A static function definition. */ | |
951 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
f1e6e072 | 952 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
176620f1 | 953 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e148f09d | 954 | add_symbol_to_list (sym, get_file_symbols ()); |
c906108c SS |
955 | /* fall into process_function_types. */ |
956 | ||
957 | process_function_types: | |
958 | /* Function result types are described as the result type in stabs. | |
c5aa993b JM |
959 | We need to convert this to the function-returning-type-X type |
960 | in GDB. E.g. "int" is converted to "function returning int". */ | |
c906108c SS |
961 | if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_FUNC) |
962 | SYMBOL_TYPE (sym) = lookup_function_type (SYMBOL_TYPE (sym)); | |
963 | ||
1e698235 DJ |
964 | /* All functions in C++ have prototypes. Stabs does not offer an |
965 | explicit way to identify prototyped or unprototyped functions, | |
966 | but both GCC and Sun CC emit stabs for the "call-as" type rather | |
967 | than the "declared-as" type for unprototyped functions, so | |
968 | we treat all functions as if they were prototyped. This is used | |
969 | primarily for promotion when calling the function from GDB. */ | |
876cecd0 | 970 | TYPE_PROTOTYPED (SYMBOL_TYPE (sym)) = 1; |
c906108c | 971 | |
c378eb4e | 972 | /* fall into process_prototype_types. */ |
c906108c SS |
973 | |
974 | process_prototype_types: | |
975 | /* Sun acc puts declared types of arguments here. */ | |
976 | if (*p == ';') | |
977 | { | |
978 | struct type *ftype = SYMBOL_TYPE (sym); | |
979 | int nsemi = 0; | |
980 | int nparams = 0; | |
a121b7c1 | 981 | const char *p1 = p; |
c906108c SS |
982 | |
983 | /* Obtain a worst case guess for the number of arguments | |
984 | by counting the semicolons. */ | |
985 | while (*p1) | |
986 | { | |
987 | if (*p1++ == ';') | |
988 | nsemi++; | |
989 | } | |
990 | ||
c378eb4e | 991 | /* Allocate parameter information fields and fill them in. */ |
c906108c SS |
992 | TYPE_FIELDS (ftype) = (struct field *) |
993 | TYPE_ALLOC (ftype, nsemi * sizeof (struct field)); | |
994 | while (*p++ == ';') | |
995 | { | |
996 | struct type *ptype; | |
997 | ||
998 | /* A type number of zero indicates the start of varargs. | |
c5aa993b | 999 | FIXME: GDB currently ignores vararg functions. */ |
c906108c SS |
1000 | if (p[0] == '0' && p[1] == '\0') |
1001 | break; | |
1002 | ptype = read_type (&p, objfile); | |
1003 | ||
1004 | /* The Sun compilers mark integer arguments, which should | |
c5aa993b | 1005 | be promoted to the width of the calling conventions, with |
c378eb4e | 1006 | a type which references itself. This type is turned into |
c5aa993b | 1007 | a TYPE_CODE_VOID type by read_type, and we have to turn |
5e2b427d UW |
1008 | it back into builtin_int here. |
1009 | FIXME: Do we need a new builtin_promoted_int_arg ? */ | |
c906108c | 1010 | if (TYPE_CODE (ptype) == TYPE_CODE_VOID) |
46bf5051 | 1011 | ptype = objfile_type (objfile)->builtin_int; |
8176bb6d DJ |
1012 | TYPE_FIELD_TYPE (ftype, nparams) = ptype; |
1013 | TYPE_FIELD_ARTIFICIAL (ftype, nparams++) = 0; | |
c906108c SS |
1014 | } |
1015 | TYPE_NFIELDS (ftype) = nparams; | |
876cecd0 | 1016 | TYPE_PROTOTYPED (ftype) = 1; |
c906108c SS |
1017 | } |
1018 | break; | |
1019 | ||
1020 | case 'F': | |
1021 | /* A global function definition. */ | |
1022 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
f1e6e072 | 1023 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
176620f1 | 1024 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e148f09d | 1025 | add_symbol_to_list (sym, get_global_symbols ()); |
c906108c SS |
1026 | goto process_function_types; |
1027 | ||
1028 | case 'G': | |
1029 | /* For a class G (global) symbol, it appears that the | |
c5aa993b JM |
1030 | value is not correct. It is necessary to search for the |
1031 | corresponding linker definition to find the value. | |
1032 | These definitions appear at the end of the namelist. */ | |
c906108c | 1033 | SYMBOL_TYPE (sym) = read_type (&p, objfile); |
f1e6e072 | 1034 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
176620f1 | 1035 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c | 1036 | /* Don't add symbol references to global_sym_chain. |
c5aa993b JM |
1037 | Symbol references don't have valid names and wont't match up with |
1038 | minimal symbols when the global_sym_chain is relocated. | |
1039 | We'll fixup symbol references when we fixup the defining symbol. */ | |
3567439c | 1040 | if (SYMBOL_LINKAGE_NAME (sym) && SYMBOL_LINKAGE_NAME (sym)[0] != '#') |
c906108c | 1041 | { |
3567439c | 1042 | i = hashname (SYMBOL_LINKAGE_NAME (sym)); |
c5aa993b JM |
1043 | SYMBOL_VALUE_CHAIN (sym) = global_sym_chain[i]; |
1044 | global_sym_chain[i] = sym; | |
c906108c | 1045 | } |
e148f09d | 1046 | add_symbol_to_list (sym, get_global_symbols ()); |
c906108c SS |
1047 | break; |
1048 | ||
1049 | /* This case is faked by a conditional above, | |
c5aa993b JM |
1050 | when there is no code letter in the dbx data. |
1051 | Dbx data never actually contains 'l'. */ | |
c906108c SS |
1052 | case 's': |
1053 | case 'l': | |
1054 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
f1e6e072 | 1055 | SYMBOL_ACLASS_INDEX (sym) = LOC_LOCAL; |
c906108c | 1056 | SYMBOL_VALUE (sym) = valu; |
176620f1 | 1057 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e148f09d | 1058 | add_symbol_to_list (sym, get_local_symbols ()); |
c906108c SS |
1059 | break; |
1060 | ||
1061 | case 'p': | |
1062 | if (*p == 'F') | |
1063 | /* pF is a two-letter code that means a function parameter in Fortran. | |
1064 | The type-number specifies the type of the return value. | |
1065 | Translate it into a pointer-to-function type. */ | |
1066 | { | |
1067 | p++; | |
1068 | SYMBOL_TYPE (sym) | |
1069 | = lookup_pointer_type | |
c5aa993b | 1070 | (lookup_function_type (read_type (&p, objfile))); |
c906108c SS |
1071 | } |
1072 | else | |
1073 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
1074 | ||
f1e6e072 | 1075 | SYMBOL_ACLASS_INDEX (sym) = LOC_ARG; |
c906108c | 1076 | SYMBOL_VALUE (sym) = valu; |
176620f1 | 1077 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
2a2d4dc3 | 1078 | SYMBOL_IS_ARGUMENT (sym) = 1; |
e148f09d | 1079 | add_symbol_to_list (sym, get_local_symbols ()); |
c906108c | 1080 | |
5e2b427d | 1081 | if (gdbarch_byte_order (gdbarch) != BFD_ENDIAN_BIG) |
c906108c SS |
1082 | { |
1083 | /* On little-endian machines, this crud is never necessary, | |
1084 | and, if the extra bytes contain garbage, is harmful. */ | |
1085 | break; | |
1086 | } | |
1087 | ||
1088 | /* If it's gcc-compiled, if it says `short', believe it. */ | |
f73e88f9 | 1089 | if (processing_gcc_compilation |
5e2b427d | 1090 | || gdbarch_believe_pcc_promotion (gdbarch)) |
c906108c SS |
1091 | break; |
1092 | ||
5e2b427d | 1093 | if (!gdbarch_believe_pcc_promotion (gdbarch)) |
7a292a7a | 1094 | { |
8ee56bcf AC |
1095 | /* If PCC says a parameter is a short or a char, it is |
1096 | really an int. */ | |
5e2b427d UW |
1097 | if (TYPE_LENGTH (SYMBOL_TYPE (sym)) |
1098 | < gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT | |
8ee56bcf | 1099 | && TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_INT) |
7a292a7a | 1100 | { |
8ee56bcf AC |
1101 | SYMBOL_TYPE (sym) = |
1102 | TYPE_UNSIGNED (SYMBOL_TYPE (sym)) | |
46bf5051 UW |
1103 | ? objfile_type (objfile)->builtin_unsigned_int |
1104 | : objfile_type (objfile)->builtin_int; | |
7a292a7a | 1105 | } |
8ee56bcf | 1106 | break; |
7a292a7a | 1107 | } |
0019cd49 | 1108 | /* Fall through. */ |
c906108c SS |
1109 | |
1110 | case 'P': | |
1111 | /* acc seems to use P to declare the prototypes of functions that | |
1112 | are referenced by this file. gdb is not prepared to deal | |
1113 | with this extra information. FIXME, it ought to. */ | |
1114 | if (type == N_FUN) | |
1115 | { | |
1116 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
1117 | goto process_prototype_types; | |
1118 | } | |
c5aa993b | 1119 | /*FALLTHROUGH */ |
c906108c SS |
1120 | |
1121 | case 'R': | |
1122 | /* Parameter which is in a register. */ | |
1123 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
f1e6e072 | 1124 | SYMBOL_ACLASS_INDEX (sym) = stab_register_index; |
2a2d4dc3 | 1125 | SYMBOL_IS_ARGUMENT (sym) = 1; |
768a979c | 1126 | SYMBOL_VALUE (sym) = valu; |
176620f1 | 1127 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e148f09d | 1128 | add_symbol_to_list (sym, get_local_symbols ()); |
c906108c SS |
1129 | break; |
1130 | ||
1131 | case 'r': | |
1132 | /* Register variable (either global or local). */ | |
1133 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
f1e6e072 | 1134 | SYMBOL_ACLASS_INDEX (sym) = stab_register_index; |
768a979c | 1135 | SYMBOL_VALUE (sym) = valu; |
176620f1 | 1136 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1137 | if (within_function) |
1138 | { | |
192cb3d4 MK |
1139 | /* Sun cc uses a pair of symbols, one 'p' and one 'r', with |
1140 | the same name to represent an argument passed in a | |
1141 | register. GCC uses 'P' for the same case. So if we find | |
1142 | such a symbol pair we combine it into one 'P' symbol. | |
1143 | For Sun cc we need to do this regardless of | |
1144 | stabs_argument_has_addr, because the compiler puts out | |
1145 | the 'p' symbol even if it never saves the argument onto | |
1146 | the stack. | |
1147 | ||
1148 | On most machines, we want to preserve both symbols, so | |
1149 | that we can still get information about what is going on | |
1150 | with the stack (VAX for computing args_printed, using | |
1151 | stack slots instead of saved registers in backtraces, | |
1152 | etc.). | |
c906108c SS |
1153 | |
1154 | Note that this code illegally combines | |
c5aa993b | 1155 | main(argc) struct foo argc; { register struct foo argc; } |
c906108c SS |
1156 | but this case is considered pathological and causes a warning |
1157 | from a decent compiler. */ | |
1158 | ||
e148f09d | 1159 | struct pending *local_symbols = *get_local_symbols (); |
c906108c SS |
1160 | if (local_symbols |
1161 | && local_symbols->nsyms > 0 | |
5e2b427d | 1162 | && gdbarch_stabs_argument_has_addr (gdbarch, SYMBOL_TYPE (sym))) |
c906108c SS |
1163 | { |
1164 | struct symbol *prev_sym; | |
433759f7 | 1165 | |
c906108c SS |
1166 | prev_sym = local_symbols->symbol[local_symbols->nsyms - 1]; |
1167 | if ((SYMBOL_CLASS (prev_sym) == LOC_REF_ARG | |
1168 | || SYMBOL_CLASS (prev_sym) == LOC_ARG) | |
3567439c DJ |
1169 | && strcmp (SYMBOL_LINKAGE_NAME (prev_sym), |
1170 | SYMBOL_LINKAGE_NAME (sym)) == 0) | |
c906108c | 1171 | { |
f1e6e072 | 1172 | SYMBOL_ACLASS_INDEX (prev_sym) = stab_register_index; |
c906108c SS |
1173 | /* Use the type from the LOC_REGISTER; that is the type |
1174 | that is actually in that register. */ | |
1175 | SYMBOL_TYPE (prev_sym) = SYMBOL_TYPE (sym); | |
1176 | SYMBOL_VALUE (prev_sym) = SYMBOL_VALUE (sym); | |
1177 | sym = prev_sym; | |
1178 | break; | |
1179 | } | |
1180 | } | |
e148f09d | 1181 | add_symbol_to_list (sym, get_local_symbols ()); |
c906108c SS |
1182 | } |
1183 | else | |
e148f09d | 1184 | add_symbol_to_list (sym, get_file_symbols ()); |
c906108c SS |
1185 | break; |
1186 | ||
1187 | case 'S': | |
c378eb4e | 1188 | /* Static symbol at top level of file. */ |
c906108c | 1189 | SYMBOL_TYPE (sym) = read_type (&p, objfile); |
f1e6e072 | 1190 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
c906108c | 1191 | SYMBOL_VALUE_ADDRESS (sym) = valu; |
5e2b427d UW |
1192 | if (gdbarch_static_transform_name_p (gdbarch) |
1193 | && gdbarch_static_transform_name (gdbarch, | |
3567439c DJ |
1194 | SYMBOL_LINKAGE_NAME (sym)) |
1195 | != SYMBOL_LINKAGE_NAME (sym)) | |
c5aa993b | 1196 | { |
3b7344d5 | 1197 | struct bound_minimal_symbol msym; |
433759f7 | 1198 | |
3e43a32a MS |
1199 | msym = lookup_minimal_symbol (SYMBOL_LINKAGE_NAME (sym), |
1200 | NULL, objfile); | |
3b7344d5 | 1201 | if (msym.minsym != NULL) |
c5aa993b | 1202 | { |
0d5cff50 | 1203 | const char *new_name = gdbarch_static_transform_name |
3567439c | 1204 | (gdbarch, SYMBOL_LINKAGE_NAME (sym)); |
433759f7 | 1205 | |
3567439c | 1206 | SYMBOL_SET_LINKAGE_NAME (sym, new_name); |
77e371c0 | 1207 | SYMBOL_VALUE_ADDRESS (sym) = BMSYMBOL_VALUE_ADDRESS (msym); |
c5aa993b JM |
1208 | } |
1209 | } | |
176620f1 | 1210 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e148f09d | 1211 | add_symbol_to_list (sym, get_file_symbols ()); |
c906108c SS |
1212 | break; |
1213 | ||
1214 | case 't': | |
52eea4ce JB |
1215 | /* In Ada, there is no distinction between typedef and non-typedef; |
1216 | any type declaration implicitly has the equivalent of a typedef, | |
c378eb4e | 1217 | and thus 't' is in fact equivalent to 'Tt'. |
52eea4ce JB |
1218 | |
1219 | Therefore, for Ada units, we check the character immediately | |
1220 | before the 't', and if we do not find a 'T', then make sure to | |
1221 | create the associated symbol in the STRUCT_DOMAIN ('t' definitions | |
1222 | will be stored in the VAR_DOMAIN). If the symbol was indeed | |
1223 | defined as 'Tt' then the STRUCT_DOMAIN symbol will be created | |
1224 | elsewhere, so we don't need to take care of that. | |
1225 | ||
1226 | This is important to do, because of forward references: | |
1227 | The cleanup of undefined types stored in undef_types only uses | |
1228 | STRUCT_DOMAIN symbols to perform the replacement. */ | |
1229 | synonym = (SYMBOL_LANGUAGE (sym) == language_ada && p[-2] != 'T'); | |
1230 | ||
e2cd42dd | 1231 | /* Typedef */ |
c906108c SS |
1232 | SYMBOL_TYPE (sym) = read_type (&p, objfile); |
1233 | ||
1234 | /* For a nameless type, we don't want a create a symbol, thus we | |
c378eb4e | 1235 | did not use `sym'. Return without further processing. */ |
c5aa993b JM |
1236 | if (nameless) |
1237 | return NULL; | |
c906108c | 1238 | |
f1e6e072 | 1239 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
c906108c | 1240 | SYMBOL_VALUE (sym) = valu; |
176620f1 | 1241 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c | 1242 | /* C++ vagaries: we may have a type which is derived from |
c5aa993b JM |
1243 | a base type which did not have its name defined when the |
1244 | derived class was output. We fill in the derived class's | |
1245 | base part member's name here in that case. */ | |
c906108c SS |
1246 | if (TYPE_NAME (SYMBOL_TYPE (sym)) != NULL) |
1247 | if ((TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_STRUCT | |
1248 | || TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_UNION) | |
1249 | && TYPE_N_BASECLASSES (SYMBOL_TYPE (sym))) | |
1250 | { | |
1251 | int j; | |
433759f7 | 1252 | |
c906108c SS |
1253 | for (j = TYPE_N_BASECLASSES (SYMBOL_TYPE (sym)) - 1; j >= 0; j--) |
1254 | if (TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym), j) == 0) | |
1255 | TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym), j) = | |
a737d952 | 1256 | TYPE_NAME (TYPE_BASECLASS (SYMBOL_TYPE (sym), j)); |
c906108c SS |
1257 | } |
1258 | ||
1259 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == NULL) | |
1260 | { | |
1261 | /* gcc-2.6 or later (when using -fvtable-thunks) | |
1262 | emits a unique named type for a vtable entry. | |
c378eb4e | 1263 | Some gdb code depends on that specific name. */ |
c906108c SS |
1264 | extern const char vtbl_ptr_name[]; |
1265 | ||
1266 | if ((TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_PTR | |
3567439c | 1267 | && strcmp (SYMBOL_LINKAGE_NAME (sym), vtbl_ptr_name)) |
c906108c SS |
1268 | || TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_FUNC) |
1269 | { | |
1270 | /* If we are giving a name to a type such as "pointer to | |
c5aa993b JM |
1271 | foo" or "function returning foo", we better not set |
1272 | the TYPE_NAME. If the program contains "typedef char | |
1273 | *caddr_t;", we don't want all variables of type char | |
1274 | * to print as caddr_t. This is not just a | |
1275 | consequence of GDB's type management; PCC and GCC (at | |
1276 | least through version 2.4) both output variables of | |
1277 | either type char * or caddr_t with the type number | |
1278 | defined in the 't' symbol for caddr_t. If a future | |
1279 | compiler cleans this up it GDB is not ready for it | |
1280 | yet, but if it becomes ready we somehow need to | |
1281 | disable this check (without breaking the PCC/GCC2.4 | |
1282 | case). | |
1283 | ||
1284 | Sigh. | |
1285 | ||
1286 | Fortunately, this check seems not to be necessary | |
1287 | for anything except pointers or functions. */ | |
c378eb4e MS |
1288 | /* ezannoni: 2000-10-26. This seems to apply for |
1289 | versions of gcc older than 2.8. This was the original | |
49d97c60 | 1290 | problem: with the following code gdb would tell that |
c378eb4e MS |
1291 | the type for name1 is caddr_t, and func is char(). |
1292 | ||
49d97c60 EZ |
1293 | typedef char *caddr_t; |
1294 | char *name2; | |
1295 | struct x | |
1296 | { | |
c378eb4e | 1297 | char *name1; |
49d97c60 EZ |
1298 | } xx; |
1299 | char *func() | |
1300 | { | |
1301 | } | |
1302 | main () {} | |
1303 | */ | |
1304 | ||
c378eb4e | 1305 | /* Pascal accepts names for pointer types. */ |
3c65e5b3 | 1306 | if (get_current_subfile ()->language == language_pascal) |
49d97c60 | 1307 | { |
3567439c | 1308 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_LINKAGE_NAME (sym); |
49d97c60 | 1309 | } |
c906108c SS |
1310 | } |
1311 | else | |
3567439c | 1312 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_LINKAGE_NAME (sym); |
c906108c SS |
1313 | } |
1314 | ||
e148f09d | 1315 | add_symbol_to_list (sym, get_file_symbols ()); |
52eea4ce JB |
1316 | |
1317 | if (synonym) | |
1318 | { | |
1319 | /* Create the STRUCT_DOMAIN clone. */ | |
e623cf5d | 1320 | struct symbol *struct_sym = allocate_symbol (objfile); |
52eea4ce JB |
1321 | |
1322 | *struct_sym = *sym; | |
f1e6e072 | 1323 | SYMBOL_ACLASS_INDEX (struct_sym) = LOC_TYPEDEF; |
52eea4ce JB |
1324 | SYMBOL_VALUE (struct_sym) = valu; |
1325 | SYMBOL_DOMAIN (struct_sym) = STRUCT_DOMAIN; | |
1326 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) | |
3e43a32a MS |
1327 | TYPE_NAME (SYMBOL_TYPE (sym)) |
1328 | = obconcat (&objfile->objfile_obstack, | |
1329 | SYMBOL_LINKAGE_NAME (sym), | |
1330 | (char *) NULL); | |
e148f09d | 1331 | add_symbol_to_list (struct_sym, get_file_symbols ()); |
52eea4ce JB |
1332 | } |
1333 | ||
c906108c SS |
1334 | break; |
1335 | ||
1336 | case 'T': | |
1337 | /* Struct, union, or enum tag. For GNU C++, this can be be followed | |
c5aa993b | 1338 | by 't' which means we are typedef'ing it as well. */ |
c906108c SS |
1339 | synonym = *p == 't'; |
1340 | ||
1341 | if (synonym) | |
1342 | p++; | |
c906108c SS |
1343 | |
1344 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
25caa7a8 | 1345 | |
c906108c | 1346 | /* For a nameless type, we don't want a create a symbol, thus we |
c378eb4e | 1347 | did not use `sym'. Return without further processing. */ |
c5aa993b JM |
1348 | if (nameless) |
1349 | return NULL; | |
c906108c | 1350 | |
f1e6e072 | 1351 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
c906108c | 1352 | SYMBOL_VALUE (sym) = valu; |
176620f1 | 1353 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
e86ca25f TT |
1354 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) |
1355 | TYPE_NAME (SYMBOL_TYPE (sym)) | |
3e43a32a MS |
1356 | = obconcat (&objfile->objfile_obstack, |
1357 | SYMBOL_LINKAGE_NAME (sym), | |
1358 | (char *) NULL); | |
e148f09d | 1359 | add_symbol_to_list (sym, get_file_symbols ()); |
c906108c SS |
1360 | |
1361 | if (synonym) | |
1362 | { | |
c378eb4e | 1363 | /* Clone the sym and then modify it. */ |
e623cf5d | 1364 | struct symbol *typedef_sym = allocate_symbol (objfile); |
433759f7 | 1365 | |
c906108c | 1366 | *typedef_sym = *sym; |
f1e6e072 | 1367 | SYMBOL_ACLASS_INDEX (typedef_sym) = LOC_TYPEDEF; |
c906108c | 1368 | SYMBOL_VALUE (typedef_sym) = valu; |
176620f1 | 1369 | SYMBOL_DOMAIN (typedef_sym) = VAR_DOMAIN; |
c906108c | 1370 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) |
3e43a32a MS |
1371 | TYPE_NAME (SYMBOL_TYPE (sym)) |
1372 | = obconcat (&objfile->objfile_obstack, | |
1373 | SYMBOL_LINKAGE_NAME (sym), | |
1374 | (char *) NULL); | |
e148f09d | 1375 | add_symbol_to_list (typedef_sym, get_file_symbols ()); |
c906108c SS |
1376 | } |
1377 | break; | |
1378 | ||
1379 | case 'V': | |
c378eb4e | 1380 | /* Static symbol of local scope. */ |
c906108c | 1381 | SYMBOL_TYPE (sym) = read_type (&p, objfile); |
f1e6e072 | 1382 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
c906108c | 1383 | SYMBOL_VALUE_ADDRESS (sym) = valu; |
5e2b427d UW |
1384 | if (gdbarch_static_transform_name_p (gdbarch) |
1385 | && gdbarch_static_transform_name (gdbarch, | |
3567439c DJ |
1386 | SYMBOL_LINKAGE_NAME (sym)) |
1387 | != SYMBOL_LINKAGE_NAME (sym)) | |
c5aa993b | 1388 | { |
3b7344d5 | 1389 | struct bound_minimal_symbol msym; |
433759f7 MS |
1390 | |
1391 | msym = lookup_minimal_symbol (SYMBOL_LINKAGE_NAME (sym), | |
1392 | NULL, objfile); | |
3b7344d5 | 1393 | if (msym.minsym != NULL) |
c5aa993b | 1394 | { |
0d5cff50 | 1395 | const char *new_name = gdbarch_static_transform_name |
3567439c | 1396 | (gdbarch, SYMBOL_LINKAGE_NAME (sym)); |
433759f7 | 1397 | |
3567439c | 1398 | SYMBOL_SET_LINKAGE_NAME (sym, new_name); |
77e371c0 | 1399 | SYMBOL_VALUE_ADDRESS (sym) = BMSYMBOL_VALUE_ADDRESS (msym); |
c5aa993b JM |
1400 | } |
1401 | } | |
176620f1 | 1402 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e148f09d | 1403 | add_symbol_to_list (sym, get_local_symbols ()); |
c906108c SS |
1404 | break; |
1405 | ||
1406 | case 'v': | |
1407 | /* Reference parameter */ | |
1408 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
f1e6e072 | 1409 | SYMBOL_ACLASS_INDEX (sym) = LOC_REF_ARG; |
2a2d4dc3 | 1410 | SYMBOL_IS_ARGUMENT (sym) = 1; |
c906108c | 1411 | SYMBOL_VALUE (sym) = valu; |
176620f1 | 1412 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e148f09d | 1413 | add_symbol_to_list (sym, get_local_symbols ()); |
c906108c SS |
1414 | break; |
1415 | ||
1416 | case 'a': | |
1417 | /* Reference parameter which is in a register. */ | |
1418 | SYMBOL_TYPE (sym) = read_type (&p, objfile); | |
f1e6e072 | 1419 | SYMBOL_ACLASS_INDEX (sym) = stab_regparm_index; |
2a2d4dc3 | 1420 | SYMBOL_IS_ARGUMENT (sym) = 1; |
768a979c | 1421 | SYMBOL_VALUE (sym) = valu; |
176620f1 | 1422 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e148f09d | 1423 | add_symbol_to_list (sym, get_local_symbols ()); |
c906108c SS |
1424 | break; |
1425 | ||
1426 | case 'X': | |
1427 | /* This is used by Sun FORTRAN for "function result value". | |
c5aa993b JM |
1428 | Sun claims ("dbx and dbxtool interfaces", 2nd ed) |
1429 | that Pascal uses it too, but when I tried it Pascal used | |
1430 | "x:3" (local symbol) instead. */ | |
c906108c | 1431 | SYMBOL_TYPE (sym) = read_type (&p, objfile); |
f1e6e072 | 1432 | SYMBOL_ACLASS_INDEX (sym) = LOC_LOCAL; |
c906108c | 1433 | SYMBOL_VALUE (sym) = valu; |
176620f1 | 1434 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e148f09d | 1435 | add_symbol_to_list (sym, get_local_symbols ()); |
c906108c | 1436 | break; |
c906108c SS |
1437 | |
1438 | default: | |
1439 | SYMBOL_TYPE (sym) = error_type (&p, objfile); | |
f1e6e072 | 1440 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
c906108c | 1441 | SYMBOL_VALUE (sym) = 0; |
176620f1 | 1442 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e148f09d | 1443 | add_symbol_to_list (sym, get_file_symbols ()); |
c906108c SS |
1444 | break; |
1445 | } | |
1446 | ||
192cb3d4 MK |
1447 | /* Some systems pass variables of certain types by reference instead |
1448 | of by value, i.e. they will pass the address of a structure (in a | |
1449 | register or on the stack) instead of the structure itself. */ | |
c906108c | 1450 | |
5e2b427d | 1451 | if (gdbarch_stabs_argument_has_addr (gdbarch, SYMBOL_TYPE (sym)) |
2a2d4dc3 | 1452 | && SYMBOL_IS_ARGUMENT (sym)) |
c906108c | 1453 | { |
2a2d4dc3 | 1454 | /* We have to convert LOC_REGISTER to LOC_REGPARM_ADDR (for |
192cb3d4 | 1455 | variables passed in a register). */ |
2a2d4dc3 | 1456 | if (SYMBOL_CLASS (sym) == LOC_REGISTER) |
f1e6e072 | 1457 | SYMBOL_ACLASS_INDEX (sym) = LOC_REGPARM_ADDR; |
192cb3d4 MK |
1458 | /* Likewise for converting LOC_ARG to LOC_REF_ARG (for the 7th |
1459 | and subsequent arguments on SPARC, for example). */ | |
1460 | else if (SYMBOL_CLASS (sym) == LOC_ARG) | |
f1e6e072 | 1461 | SYMBOL_ACLASS_INDEX (sym) = LOC_REF_ARG; |
c906108c SS |
1462 | } |
1463 | ||
c906108c SS |
1464 | return sym; |
1465 | } | |
1466 | ||
c906108c SS |
1467 | /* Skip rest of this symbol and return an error type. |
1468 | ||
1469 | General notes on error recovery: error_type always skips to the | |
1470 | end of the symbol (modulo cretinous dbx symbol name continuation). | |
1471 | Thus code like this: | |
1472 | ||
1473 | if (*(*pp)++ != ';') | |
c5aa993b | 1474 | return error_type (pp, objfile); |
c906108c SS |
1475 | |
1476 | is wrong because if *pp starts out pointing at '\0' (typically as the | |
1477 | result of an earlier error), it will be incremented to point to the | |
1478 | start of the next symbol, which might produce strange results, at least | |
1479 | if you run off the end of the string table. Instead use | |
1480 | ||
1481 | if (**pp != ';') | |
c5aa993b | 1482 | return error_type (pp, objfile); |
c906108c SS |
1483 | ++*pp; |
1484 | ||
1485 | or | |
1486 | ||
1487 | if (**pp != ';') | |
c5aa993b | 1488 | foo = error_type (pp, objfile); |
c906108c | 1489 | else |
c5aa993b | 1490 | ++*pp; |
c906108c SS |
1491 | |
1492 | And in case it isn't obvious, the point of all this hair is so the compiler | |
1493 | can define new types and new syntaxes, and old versions of the | |
1494 | debugger will be able to read the new symbol tables. */ | |
1495 | ||
1496 | static struct type * | |
a121b7c1 | 1497 | error_type (const char **pp, struct objfile *objfile) |
c906108c | 1498 | { |
b98664d3 | 1499 | complaint (_("couldn't parse type; debugger out of date?")); |
c906108c SS |
1500 | while (1) |
1501 | { | |
1502 | /* Skip to end of symbol. */ | |
1503 | while (**pp != '\0') | |
1504 | { | |
1505 | (*pp)++; | |
1506 | } | |
1507 | ||
1508 | /* Check for and handle cretinous dbx symbol name continuation! */ | |
1509 | if ((*pp)[-1] == '\\' || (*pp)[-1] == '?') | |
1510 | { | |
1511 | *pp = next_symbol_text (objfile); | |
1512 | } | |
1513 | else | |
1514 | { | |
1515 | break; | |
1516 | } | |
1517 | } | |
46bf5051 | 1518 | return objfile_type (objfile)->builtin_error; |
c906108c | 1519 | } |
c906108c | 1520 | \f |
c5aa993b | 1521 | |
c906108c SS |
1522 | /* Read type information or a type definition; return the type. Even |
1523 | though this routine accepts either type information or a type | |
1524 | definition, the distinction is relevant--some parts of stabsread.c | |
1525 | assume that type information starts with a digit, '-', or '(' in | |
1526 | deciding whether to call read_type. */ | |
1527 | ||
a7a48797 | 1528 | static struct type * |
a121b7c1 | 1529 | read_type (const char **pp, struct objfile *objfile) |
c906108c | 1530 | { |
52f0bd74 | 1531 | struct type *type = 0; |
c906108c SS |
1532 | struct type *type1; |
1533 | int typenums[2]; | |
1534 | char type_descriptor; | |
1535 | ||
1536 | /* Size in bits of type if specified by a type attribute, or -1 if | |
1537 | there is no size attribute. */ | |
1538 | int type_size = -1; | |
1539 | ||
c378eb4e | 1540 | /* Used to distinguish string and bitstring from char-array and set. */ |
c906108c SS |
1541 | int is_string = 0; |
1542 | ||
c378eb4e | 1543 | /* Used to distinguish vector from array. */ |
e2cd42dd MS |
1544 | int is_vector = 0; |
1545 | ||
c906108c SS |
1546 | /* Read type number if present. The type number may be omitted. |
1547 | for instance in a two-dimensional array declared with type | |
1548 | "ar1;1;10;ar1;1;10;4". */ | |
1549 | if ((**pp >= '0' && **pp <= '9') | |
1550 | || **pp == '(' | |
1551 | || **pp == '-') | |
1552 | { | |
1553 | if (read_type_number (pp, typenums) != 0) | |
1554 | return error_type (pp, objfile); | |
c5aa993b | 1555 | |
c906108c | 1556 | if (**pp != '=') |
8cfe231d JB |
1557 | { |
1558 | /* Type is not being defined here. Either it already | |
1559 | exists, or this is a forward reference to it. | |
1560 | dbx_alloc_type handles both cases. */ | |
1561 | type = dbx_alloc_type (typenums, objfile); | |
1562 | ||
1563 | /* If this is a forward reference, arrange to complain if it | |
1564 | doesn't get patched up by the time we're done | |
1565 | reading. */ | |
1566 | if (TYPE_CODE (type) == TYPE_CODE_UNDEF) | |
bf362611 | 1567 | add_undefined_type (type, typenums); |
8cfe231d JB |
1568 | |
1569 | return type; | |
1570 | } | |
c906108c SS |
1571 | |
1572 | /* Type is being defined here. */ | |
1573 | /* Skip the '='. | |
c5aa993b JM |
1574 | Also skip the type descriptor - we get it below with (*pp)[-1]. */ |
1575 | (*pp) += 2; | |
c906108c SS |
1576 | } |
1577 | else | |
1578 | { | |
1579 | /* 'typenums=' not present, type is anonymous. Read and return | |
c5aa993b | 1580 | the definition, but don't put it in the type vector. */ |
c906108c SS |
1581 | typenums[0] = typenums[1] = -1; |
1582 | (*pp)++; | |
1583 | } | |
1584 | ||
c5aa993b | 1585 | again: |
c906108c SS |
1586 | type_descriptor = (*pp)[-1]; |
1587 | switch (type_descriptor) | |
1588 | { | |
1589 | case 'x': | |
1590 | { | |
1591 | enum type_code code; | |
1592 | ||
1593 | /* Used to index through file_symbols. */ | |
1594 | struct pending *ppt; | |
1595 | int i; | |
c5aa993b | 1596 | |
c906108c SS |
1597 | /* Name including "struct", etc. */ |
1598 | char *type_name; | |
c5aa993b | 1599 | |
c906108c | 1600 | { |
a121b7c1 | 1601 | const char *from, *p, *q1, *q2; |
c5aa993b | 1602 | |
c906108c SS |
1603 | /* Set the type code according to the following letter. */ |
1604 | switch ((*pp)[0]) | |
1605 | { | |
1606 | case 's': | |
1607 | code = TYPE_CODE_STRUCT; | |
1608 | break; | |
1609 | case 'u': | |
1610 | code = TYPE_CODE_UNION; | |
1611 | break; | |
1612 | case 'e': | |
1613 | code = TYPE_CODE_ENUM; | |
1614 | break; | |
1615 | default: | |
1616 | { | |
1617 | /* Complain and keep going, so compilers can invent new | |
1618 | cross-reference types. */ | |
b98664d3 | 1619 | complaint (_("Unrecognized cross-reference type `%c'"), |
3e43a32a | 1620 | (*pp)[0]); |
c906108c SS |
1621 | code = TYPE_CODE_STRUCT; |
1622 | break; | |
1623 | } | |
1624 | } | |
c5aa993b | 1625 | |
c906108c SS |
1626 | q1 = strchr (*pp, '<'); |
1627 | p = strchr (*pp, ':'); | |
1628 | if (p == NULL) | |
1629 | return error_type (pp, objfile); | |
1630 | if (q1 && p > q1 && p[1] == ':') | |
1631 | { | |
1632 | int nesting_level = 0; | |
433759f7 | 1633 | |
c906108c SS |
1634 | for (q2 = q1; *q2; q2++) |
1635 | { | |
1636 | if (*q2 == '<') | |
1637 | nesting_level++; | |
1638 | else if (*q2 == '>') | |
1639 | nesting_level--; | |
1640 | else if (*q2 == ':' && nesting_level == 0) | |
1641 | break; | |
1642 | } | |
1643 | p = q2; | |
1644 | if (*p != ':') | |
1645 | return error_type (pp, objfile); | |
1646 | } | |
71c25dea | 1647 | type_name = NULL; |
3c65e5b3 | 1648 | if (get_current_subfile ()->language == language_cplus) |
71c25dea | 1649 | { |
2f408ecb | 1650 | char *name = (char *) alloca (p - *pp + 1); |
433759f7 | 1651 | |
71c25dea TT |
1652 | memcpy (name, *pp, p - *pp); |
1653 | name[p - *pp] = '\0'; | |
2f408ecb PA |
1654 | |
1655 | std::string new_name = cp_canonicalize_string (name); | |
1656 | if (!new_name.empty ()) | |
71c25dea | 1657 | { |
224c3ddb SM |
1658 | type_name |
1659 | = (char *) obstack_copy0 (&objfile->objfile_obstack, | |
2f408ecb PA |
1660 | new_name.c_str (), |
1661 | new_name.length ()); | |
71c25dea TT |
1662 | } |
1663 | } | |
1664 | if (type_name == NULL) | |
1665 | { | |
a121b7c1 | 1666 | char *to = type_name = (char *) |
3e43a32a | 1667 | obstack_alloc (&objfile->objfile_obstack, p - *pp + 1); |
71c25dea TT |
1668 | |
1669 | /* Copy the name. */ | |
1670 | from = *pp + 1; | |
1671 | while (from < p) | |
1672 | *to++ = *from++; | |
1673 | *to = '\0'; | |
1674 | } | |
c5aa993b | 1675 | |
c906108c SS |
1676 | /* Set the pointer ahead of the name which we just read, and |
1677 | the colon. */ | |
71c25dea | 1678 | *pp = p + 1; |
c906108c SS |
1679 | } |
1680 | ||
149d821b JB |
1681 | /* If this type has already been declared, then reuse the same |
1682 | type, rather than allocating a new one. This saves some | |
1683 | memory. */ | |
c906108c | 1684 | |
e148f09d | 1685 | for (ppt = *get_file_symbols (); ppt; ppt = ppt->next) |
c906108c SS |
1686 | for (i = 0; i < ppt->nsyms; i++) |
1687 | { | |
1688 | struct symbol *sym = ppt->symbol[i]; | |
1689 | ||
1690 | if (SYMBOL_CLASS (sym) == LOC_TYPEDEF | |
176620f1 | 1691 | && SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN |
c906108c | 1692 | && (TYPE_CODE (SYMBOL_TYPE (sym)) == code) |
3567439c | 1693 | && strcmp (SYMBOL_LINKAGE_NAME (sym), type_name) == 0) |
c906108c | 1694 | { |
b99607ea | 1695 | obstack_free (&objfile->objfile_obstack, type_name); |
c906108c | 1696 | type = SYMBOL_TYPE (sym); |
149d821b | 1697 | if (typenums[0] != -1) |
46bf5051 | 1698 | *dbx_lookup_type (typenums, objfile) = type; |
c906108c SS |
1699 | return type; |
1700 | } | |
1701 | } | |
1702 | ||
1703 | /* Didn't find the type to which this refers, so we must | |
1704 | be dealing with a forward reference. Allocate a type | |
1705 | structure for it, and keep track of it so we can | |
1706 | fill in the rest of the fields when we get the full | |
1707 | type. */ | |
1708 | type = dbx_alloc_type (typenums, objfile); | |
1709 | TYPE_CODE (type) = code; | |
e86ca25f | 1710 | TYPE_NAME (type) = type_name; |
c5aa993b | 1711 | INIT_CPLUS_SPECIFIC (type); |
876cecd0 | 1712 | TYPE_STUB (type) = 1; |
c906108c | 1713 | |
bf362611 | 1714 | add_undefined_type (type, typenums); |
c906108c SS |
1715 | return type; |
1716 | } | |
1717 | ||
c5aa993b | 1718 | case '-': /* RS/6000 built-in type */ |
c906108c SS |
1719 | case '0': |
1720 | case '1': | |
1721 | case '2': | |
1722 | case '3': | |
1723 | case '4': | |
1724 | case '5': | |
1725 | case '6': | |
1726 | case '7': | |
1727 | case '8': | |
1728 | case '9': | |
1729 | case '(': | |
1730 | (*pp)--; | |
1731 | ||
1732 | /* We deal with something like t(1,2)=(3,4)=... which | |
c378eb4e | 1733 | the Lucid compiler and recent gcc versions (post 2.7.3) use. */ |
c906108c SS |
1734 | |
1735 | /* Allocate and enter the typedef type first. | |
c378eb4e | 1736 | This handles recursive types. */ |
c906108c SS |
1737 | type = dbx_alloc_type (typenums, objfile); |
1738 | TYPE_CODE (type) = TYPE_CODE_TYPEDEF; | |
c5aa993b JM |
1739 | { |
1740 | struct type *xtype = read_type (pp, objfile); | |
433759f7 | 1741 | |
c906108c SS |
1742 | if (type == xtype) |
1743 | { | |
1744 | /* It's being defined as itself. That means it is "void". */ | |
1745 | TYPE_CODE (type) = TYPE_CODE_VOID; | |
1746 | TYPE_LENGTH (type) = 1; | |
1747 | } | |
1748 | else if (type_size >= 0 || is_string) | |
1749 | { | |
dd6bda65 DJ |
1750 | /* This is the absolute wrong way to construct types. Every |
1751 | other debug format has found a way around this problem and | |
1752 | the related problems with unnecessarily stubbed types; | |
1753 | someone motivated should attempt to clean up the issue | |
1754 | here as well. Once a type pointed to has been created it | |
13a393b0 JB |
1755 | should not be modified. |
1756 | ||
1757 | Well, it's not *absolutely* wrong. Constructing recursive | |
1758 | types (trees, linked lists) necessarily entails modifying | |
1759 | types after creating them. Constructing any loop structure | |
1760 | entails side effects. The Dwarf 2 reader does handle this | |
1761 | more gracefully (it never constructs more than once | |
1762 | instance of a type object, so it doesn't have to copy type | |
1763 | objects wholesale), but it still mutates type objects after | |
1764 | other folks have references to them. | |
1765 | ||
1766 | Keep in mind that this circularity/mutation issue shows up | |
1767 | at the source language level, too: C's "incomplete types", | |
1768 | for example. So the proper cleanup, I think, would be to | |
1769 | limit GDB's type smashing to match exactly those required | |
1770 | by the source language. So GDB could have a | |
1771 | "complete_this_type" function, but never create unnecessary | |
1772 | copies of a type otherwise. */ | |
dd6bda65 | 1773 | replace_type (type, xtype); |
c906108c | 1774 | TYPE_NAME (type) = NULL; |
c906108c SS |
1775 | } |
1776 | else | |
1777 | { | |
876cecd0 | 1778 | TYPE_TARGET_STUB (type) = 1; |
c906108c SS |
1779 | TYPE_TARGET_TYPE (type) = xtype; |
1780 | } | |
1781 | } | |
1782 | break; | |
1783 | ||
c5aa993b JM |
1784 | /* In the following types, we must be sure to overwrite any existing |
1785 | type that the typenums refer to, rather than allocating a new one | |
1786 | and making the typenums point to the new one. This is because there | |
1787 | may already be pointers to the existing type (if it had been | |
1788 | forward-referenced), and we must change it to a pointer, function, | |
1789 | reference, or whatever, *in-place*. */ | |
c906108c | 1790 | |
e2cd42dd | 1791 | case '*': /* Pointer to another type */ |
c906108c | 1792 | type1 = read_type (pp, objfile); |
46bf5051 | 1793 | type = make_pointer_type (type1, dbx_lookup_type (typenums, objfile)); |
c906108c SS |
1794 | break; |
1795 | ||
c5aa993b | 1796 | case '&': /* Reference to another type */ |
c906108c | 1797 | type1 = read_type (pp, objfile); |
3b224330 AV |
1798 | type = make_reference_type (type1, dbx_lookup_type (typenums, objfile), |
1799 | TYPE_CODE_REF); | |
c906108c SS |
1800 | break; |
1801 | ||
c5aa993b | 1802 | case 'f': /* Function returning another type */ |
c906108c | 1803 | type1 = read_type (pp, objfile); |
0c8b41f1 | 1804 | type = make_function_type (type1, dbx_lookup_type (typenums, objfile)); |
c906108c SS |
1805 | break; |
1806 | ||
da966255 JB |
1807 | case 'g': /* Prototyped function. (Sun) */ |
1808 | { | |
1809 | /* Unresolved questions: | |
1810 | ||
1811 | - According to Sun's ``STABS Interface Manual'', for 'f' | |
1812 | and 'F' symbol descriptors, a `0' in the argument type list | |
1813 | indicates a varargs function. But it doesn't say how 'g' | |
1814 | type descriptors represent that info. Someone with access | |
1815 | to Sun's toolchain should try it out. | |
1816 | ||
1817 | - According to the comment in define_symbol (search for | |
1818 | `process_prototype_types:'), Sun emits integer arguments as | |
1819 | types which ref themselves --- like `void' types. Do we | |
1820 | have to deal with that here, too? Again, someone with | |
1821 | access to Sun's toolchain should try it out and let us | |
1822 | know. */ | |
1823 | ||
1824 | const char *type_start = (*pp) - 1; | |
1825 | struct type *return_type = read_type (pp, objfile); | |
1826 | struct type *func_type | |
46bf5051 | 1827 | = make_function_type (return_type, |
0c8b41f1 | 1828 | dbx_lookup_type (typenums, objfile)); |
da966255 JB |
1829 | struct type_list { |
1830 | struct type *type; | |
1831 | struct type_list *next; | |
1832 | } *arg_types = 0; | |
1833 | int num_args = 0; | |
1834 | ||
1835 | while (**pp && **pp != '#') | |
1836 | { | |
1837 | struct type *arg_type = read_type (pp, objfile); | |
8d749320 | 1838 | struct type_list *newobj = XALLOCA (struct type_list); |
fe978cb0 PA |
1839 | newobj->type = arg_type; |
1840 | newobj->next = arg_types; | |
1841 | arg_types = newobj; | |
da966255 JB |
1842 | num_args++; |
1843 | } | |
1844 | if (**pp == '#') | |
1845 | ++*pp; | |
1846 | else | |
1847 | { | |
b98664d3 | 1848 | complaint (_("Prototyped function type didn't " |
3e43a32a | 1849 | "end arguments with `#':\n%s"), |
23136709 | 1850 | type_start); |
da966255 JB |
1851 | } |
1852 | ||
1853 | /* If there is just one argument whose type is `void', then | |
1854 | that's just an empty argument list. */ | |
1855 | if (arg_types | |
1856 | && ! arg_types->next | |
1857 | && TYPE_CODE (arg_types->type) == TYPE_CODE_VOID) | |
1858 | num_args = 0; | |
1859 | ||
1860 | TYPE_FIELDS (func_type) | |
1861 | = (struct field *) TYPE_ALLOC (func_type, | |
1862 | num_args * sizeof (struct field)); | |
1863 | memset (TYPE_FIELDS (func_type), 0, num_args * sizeof (struct field)); | |
1864 | { | |
1865 | int i; | |
1866 | struct type_list *t; | |
1867 | ||
1868 | /* We stuck each argument type onto the front of the list | |
1869 | when we read it, so the list is reversed. Build the | |
1870 | fields array right-to-left. */ | |
1871 | for (t = arg_types, i = num_args - 1; t; t = t->next, i--) | |
1872 | TYPE_FIELD_TYPE (func_type, i) = t->type; | |
1873 | } | |
1874 | TYPE_NFIELDS (func_type) = num_args; | |
876cecd0 | 1875 | TYPE_PROTOTYPED (func_type) = 1; |
da966255 JB |
1876 | |
1877 | type = func_type; | |
1878 | break; | |
1879 | } | |
1880 | ||
c5aa993b | 1881 | case 'k': /* Const qualifier on some type (Sun) */ |
c906108c | 1882 | type = read_type (pp, objfile); |
d7242108 | 1883 | type = make_cv_type (1, TYPE_VOLATILE (type), type, |
46bf5051 | 1884 | dbx_lookup_type (typenums, objfile)); |
c906108c SS |
1885 | break; |
1886 | ||
c5aa993b | 1887 | case 'B': /* Volatile qual on some type (Sun) */ |
c906108c | 1888 | type = read_type (pp, objfile); |
d7242108 | 1889 | type = make_cv_type (TYPE_CONST (type), 1, type, |
46bf5051 | 1890 | dbx_lookup_type (typenums, objfile)); |
c906108c SS |
1891 | break; |
1892 | ||
1893 | case '@': | |
c5aa993b JM |
1894 | if (isdigit (**pp) || **pp == '(' || **pp == '-') |
1895 | { /* Member (class & variable) type */ | |
c906108c SS |
1896 | /* FIXME -- we should be doing smash_to_XXX types here. */ |
1897 | ||
1898 | struct type *domain = read_type (pp, objfile); | |
1899 | struct type *memtype; | |
1900 | ||
1901 | if (**pp != ',') | |
1902 | /* Invalid member type data format. */ | |
1903 | return error_type (pp, objfile); | |
1904 | ++*pp; | |
1905 | ||
1906 | memtype = read_type (pp, objfile); | |
1907 | type = dbx_alloc_type (typenums, objfile); | |
0d5de010 | 1908 | smash_to_memberptr_type (type, domain, memtype); |
c906108c | 1909 | } |
c5aa993b JM |
1910 | else |
1911 | /* type attribute */ | |
c906108c | 1912 | { |
a121b7c1 | 1913 | const char *attr = *pp; |
433759f7 | 1914 | |
c906108c SS |
1915 | /* Skip to the semicolon. */ |
1916 | while (**pp != ';' && **pp != '\0') | |
1917 | ++(*pp); | |
1918 | if (**pp == '\0') | |
1919 | return error_type (pp, objfile); | |
1920 | else | |
c5aa993b | 1921 | ++ * pp; /* Skip the semicolon. */ |
c906108c SS |
1922 | |
1923 | switch (*attr) | |
1924 | { | |
e2cd42dd | 1925 | case 's': /* Size attribute */ |
c906108c SS |
1926 | type_size = atoi (attr + 1); |
1927 | if (type_size <= 0) | |
1928 | type_size = -1; | |
1929 | break; | |
1930 | ||
e2cd42dd | 1931 | case 'S': /* String attribute */ |
c378eb4e | 1932 | /* FIXME: check to see if following type is array? */ |
c906108c SS |
1933 | is_string = 1; |
1934 | break; | |
1935 | ||
e2cd42dd | 1936 | case 'V': /* Vector attribute */ |
c378eb4e | 1937 | /* FIXME: check to see if following type is array? */ |
e2cd42dd MS |
1938 | is_vector = 1; |
1939 | break; | |
1940 | ||
c906108c SS |
1941 | default: |
1942 | /* Ignore unrecognized type attributes, so future compilers | |
c5aa993b | 1943 | can invent new ones. */ |
c906108c SS |
1944 | break; |
1945 | } | |
1946 | ++*pp; | |
1947 | goto again; | |
1948 | } | |
1949 | break; | |
1950 | ||
c5aa993b | 1951 | case '#': /* Method (class & fn) type */ |
c906108c SS |
1952 | if ((*pp)[0] == '#') |
1953 | { | |
1954 | /* We'll get the parameter types from the name. */ | |
1955 | struct type *return_type; | |
1956 | ||
1957 | (*pp)++; | |
1958 | return_type = read_type (pp, objfile); | |
1959 | if (*(*pp)++ != ';') | |
b98664d3 | 1960 | complaint (_("invalid (minimal) member type " |
3e43a32a | 1961 | "data format at symtab pos %d."), |
23136709 | 1962 | symnum); |
c906108c SS |
1963 | type = allocate_stub_method (return_type); |
1964 | if (typenums[0] != -1) | |
46bf5051 | 1965 | *dbx_lookup_type (typenums, objfile) = type; |
c906108c SS |
1966 | } |
1967 | else | |
1968 | { | |
1969 | struct type *domain = read_type (pp, objfile); | |
1970 | struct type *return_type; | |
ad2f7632 DJ |
1971 | struct field *args; |
1972 | int nargs, varargs; | |
c906108c SS |
1973 | |
1974 | if (**pp != ',') | |
1975 | /* Invalid member type data format. */ | |
1976 | return error_type (pp, objfile); | |
1977 | else | |
1978 | ++(*pp); | |
1979 | ||
1980 | return_type = read_type (pp, objfile); | |
ad2f7632 | 1981 | args = read_args (pp, ';', objfile, &nargs, &varargs); |
0a029df5 DJ |
1982 | if (args == NULL) |
1983 | return error_type (pp, objfile); | |
c906108c | 1984 | type = dbx_alloc_type (typenums, objfile); |
ad2f7632 DJ |
1985 | smash_to_method_type (type, domain, return_type, args, |
1986 | nargs, varargs); | |
c906108c SS |
1987 | } |
1988 | break; | |
1989 | ||
c5aa993b | 1990 | case 'r': /* Range type */ |
94e10a22 | 1991 | type = read_range_type (pp, typenums, type_size, objfile); |
c906108c | 1992 | if (typenums[0] != -1) |
46bf5051 | 1993 | *dbx_lookup_type (typenums, objfile) = type; |
c906108c SS |
1994 | break; |
1995 | ||
1996 | case 'b': | |
c906108c SS |
1997 | { |
1998 | /* Sun ACC builtin int type */ | |
1999 | type = read_sun_builtin_type (pp, typenums, objfile); | |
2000 | if (typenums[0] != -1) | |
46bf5051 | 2001 | *dbx_lookup_type (typenums, objfile) = type; |
c906108c SS |
2002 | } |
2003 | break; | |
2004 | ||
c5aa993b | 2005 | case 'R': /* Sun ACC builtin float type */ |
c906108c SS |
2006 | type = read_sun_floating_type (pp, typenums, objfile); |
2007 | if (typenums[0] != -1) | |
46bf5051 | 2008 | *dbx_lookup_type (typenums, objfile) = type; |
c906108c | 2009 | break; |
c5aa993b JM |
2010 | |
2011 | case 'e': /* Enumeration type */ | |
c906108c SS |
2012 | type = dbx_alloc_type (typenums, objfile); |
2013 | type = read_enum_type (pp, type, objfile); | |
2014 | if (typenums[0] != -1) | |
46bf5051 | 2015 | *dbx_lookup_type (typenums, objfile) = type; |
c906108c SS |
2016 | break; |
2017 | ||
c5aa993b JM |
2018 | case 's': /* Struct type */ |
2019 | case 'u': /* Union type */ | |
2ae1c2d2 JB |
2020 | { |
2021 | enum type_code type_code = TYPE_CODE_UNDEF; | |
2022 | type = dbx_alloc_type (typenums, objfile); | |
2023 | switch (type_descriptor) | |
2024 | { | |
2025 | case 's': | |
2026 | type_code = TYPE_CODE_STRUCT; | |
2027 | break; | |
2028 | case 'u': | |
2029 | type_code = TYPE_CODE_UNION; | |
2030 | break; | |
2031 | } | |
2032 | type = read_struct_type (pp, type, type_code, objfile); | |
2033 | break; | |
2034 | } | |
c906108c | 2035 | |
c5aa993b | 2036 | case 'a': /* Array type */ |
c906108c SS |
2037 | if (**pp != 'r') |
2038 | return error_type (pp, objfile); | |
2039 | ++*pp; | |
c5aa993b | 2040 | |
c906108c SS |
2041 | type = dbx_alloc_type (typenums, objfile); |
2042 | type = read_array_type (pp, type, objfile); | |
2043 | if (is_string) | |
2044 | TYPE_CODE (type) = TYPE_CODE_STRING; | |
e2cd42dd | 2045 | if (is_vector) |
ea37ba09 | 2046 | make_vector_type (type); |
c906108c SS |
2047 | break; |
2048 | ||
6b1755ce | 2049 | case 'S': /* Set type */ |
c906108c | 2050 | type1 = read_type (pp, objfile); |
cafb3438 | 2051 | type = create_set_type (NULL, type1); |
c906108c | 2052 | if (typenums[0] != -1) |
46bf5051 | 2053 | *dbx_lookup_type (typenums, objfile) = type; |
c906108c SS |
2054 | break; |
2055 | ||
2056 | default: | |
c378eb4e MS |
2057 | --*pp; /* Go back to the symbol in error. */ |
2058 | /* Particularly important if it was \0! */ | |
c906108c SS |
2059 | return error_type (pp, objfile); |
2060 | } | |
2061 | ||
2062 | if (type == 0) | |
2063 | { | |
8a3fe4f8 | 2064 | warning (_("GDB internal error, type is NULL in stabsread.c.")); |
c906108c SS |
2065 | return error_type (pp, objfile); |
2066 | } | |
2067 | ||
2068 | /* Size specified in a type attribute overrides any other size. */ | |
2069 | if (type_size != -1) | |
2070 | TYPE_LENGTH (type) = (type_size + TARGET_CHAR_BIT - 1) / TARGET_CHAR_BIT; | |
2071 | ||
2072 | return type; | |
2073 | } | |
2074 | \f | |
2075 | /* RS/6000 xlc/dbx combination uses a set of builtin types, starting from -1. | |
c378eb4e | 2076 | Return the proper type node for a given builtin type number. */ |
c906108c | 2077 | |
d772d2ab TT |
2078 | static const struct objfile_key<struct type *, |
2079 | gdb::noop_deleter<struct type *>> | |
2080 | rs6000_builtin_type_data; | |
46bf5051 | 2081 | |
c906108c | 2082 | static struct type * |
46bf5051 | 2083 | rs6000_builtin_type (int typenum, struct objfile *objfile) |
c906108c | 2084 | { |
d772d2ab | 2085 | struct type **negative_types = rs6000_builtin_type_data.get (objfile); |
46bf5051 | 2086 | |
c906108c SS |
2087 | /* We recognize types numbered from -NUMBER_RECOGNIZED to -1. */ |
2088 | #define NUMBER_RECOGNIZED 34 | |
c906108c SS |
2089 | struct type *rettype = NULL; |
2090 | ||
2091 | if (typenum >= 0 || typenum < -NUMBER_RECOGNIZED) | |
2092 | { | |
b98664d3 | 2093 | complaint (_("Unknown builtin type %d"), typenum); |
46bf5051 | 2094 | return objfile_type (objfile)->builtin_error; |
c906108c | 2095 | } |
46bf5051 UW |
2096 | |
2097 | if (!negative_types) | |
2098 | { | |
2099 | /* This includes an empty slot for type number -0. */ | |
2100 | negative_types = OBSTACK_CALLOC (&objfile->objfile_obstack, | |
2101 | NUMBER_RECOGNIZED + 1, struct type *); | |
d772d2ab | 2102 | rs6000_builtin_type_data.set (objfile, negative_types); |
46bf5051 UW |
2103 | } |
2104 | ||
c906108c SS |
2105 | if (negative_types[-typenum] != NULL) |
2106 | return negative_types[-typenum]; | |
2107 | ||
2108 | #if TARGET_CHAR_BIT != 8 | |
c5aa993b | 2109 | #error This code wrong for TARGET_CHAR_BIT not 8 |
c906108c SS |
2110 | /* These definitions all assume that TARGET_CHAR_BIT is 8. I think |
2111 | that if that ever becomes not true, the correct fix will be to | |
2112 | make the size in the struct type to be in bits, not in units of | |
2113 | TARGET_CHAR_BIT. */ | |
2114 | #endif | |
2115 | ||
2116 | switch (-typenum) | |
2117 | { | |
2118 | case 1: | |
2119 | /* The size of this and all the other types are fixed, defined | |
c5aa993b JM |
2120 | by the debugging format. If there is a type called "int" which |
2121 | is other than 32 bits, then it should use a new negative type | |
2122 | number (or avoid negative type numbers for that case). | |
2123 | See stabs.texinfo. */ | |
19f392bc | 2124 | rettype = init_integer_type (objfile, 32, 0, "int"); |
c906108c SS |
2125 | break; |
2126 | case 2: | |
19f392bc | 2127 | rettype = init_integer_type (objfile, 8, 0, "char"); |
c413c448 | 2128 | TYPE_NOSIGN (rettype) = 1; |
c906108c SS |
2129 | break; |
2130 | case 3: | |
19f392bc | 2131 | rettype = init_integer_type (objfile, 16, 0, "short"); |
c906108c SS |
2132 | break; |
2133 | case 4: | |
19f392bc | 2134 | rettype = init_integer_type (objfile, 32, 0, "long"); |
c906108c SS |
2135 | break; |
2136 | case 5: | |
19f392bc | 2137 | rettype = init_integer_type (objfile, 8, 1, "unsigned char"); |
c906108c SS |
2138 | break; |
2139 | case 6: | |
19f392bc | 2140 | rettype = init_integer_type (objfile, 8, 0, "signed char"); |
c906108c SS |
2141 | break; |
2142 | case 7: | |
19f392bc | 2143 | rettype = init_integer_type (objfile, 16, 1, "unsigned short"); |
c906108c SS |
2144 | break; |
2145 | case 8: | |
19f392bc | 2146 | rettype = init_integer_type (objfile, 32, 1, "unsigned int"); |
c906108c SS |
2147 | break; |
2148 | case 9: | |
19f392bc | 2149 | rettype = init_integer_type (objfile, 32, 1, "unsigned"); |
89acf84d | 2150 | break; |
c906108c | 2151 | case 10: |
19f392bc | 2152 | rettype = init_integer_type (objfile, 32, 1, "unsigned long"); |
c906108c SS |
2153 | break; |
2154 | case 11: | |
77b7c781 | 2155 | rettype = init_type (objfile, TYPE_CODE_VOID, TARGET_CHAR_BIT, "void"); |
c906108c SS |
2156 | break; |
2157 | case 12: | |
2158 | /* IEEE single precision (32 bit). */ | |
49f190bc UW |
2159 | rettype = init_float_type (objfile, 32, "float", |
2160 | floatformats_ieee_single); | |
c906108c SS |
2161 | break; |
2162 | case 13: | |
2163 | /* IEEE double precision (64 bit). */ | |
49f190bc UW |
2164 | rettype = init_float_type (objfile, 64, "double", |
2165 | floatformats_ieee_double); | |
c906108c SS |
2166 | break; |
2167 | case 14: | |
2168 | /* This is an IEEE double on the RS/6000, and different machines with | |
c5aa993b JM |
2169 | different sizes for "long double" should use different negative |
2170 | type numbers. See stabs.texinfo. */ | |
49f190bc UW |
2171 | rettype = init_float_type (objfile, 64, "long double", |
2172 | floatformats_ieee_double); | |
c906108c SS |
2173 | break; |
2174 | case 15: | |
19f392bc | 2175 | rettype = init_integer_type (objfile, 32, 0, "integer"); |
c906108c SS |
2176 | break; |
2177 | case 16: | |
19f392bc | 2178 | rettype = init_boolean_type (objfile, 32, 1, "boolean"); |
c906108c SS |
2179 | break; |
2180 | case 17: | |
49f190bc UW |
2181 | rettype = init_float_type (objfile, 32, "short real", |
2182 | floatformats_ieee_single); | |
c906108c SS |
2183 | break; |
2184 | case 18: | |
49f190bc UW |
2185 | rettype = init_float_type (objfile, 64, "real", |
2186 | floatformats_ieee_double); | |
c906108c SS |
2187 | break; |
2188 | case 19: | |
19f392bc | 2189 | rettype = init_type (objfile, TYPE_CODE_ERROR, 0, "stringptr"); |
c906108c SS |
2190 | break; |
2191 | case 20: | |
19f392bc | 2192 | rettype = init_character_type (objfile, 8, 1, "character"); |
c906108c SS |
2193 | break; |
2194 | case 21: | |
19f392bc | 2195 | rettype = init_boolean_type (objfile, 8, 1, "logical*1"); |
c906108c SS |
2196 | break; |
2197 | case 22: | |
19f392bc | 2198 | rettype = init_boolean_type (objfile, 16, 1, "logical*2"); |
c906108c SS |
2199 | break; |
2200 | case 23: | |
19f392bc | 2201 | rettype = init_boolean_type (objfile, 32, 1, "logical*4"); |
c906108c SS |
2202 | break; |
2203 | case 24: | |
19f392bc | 2204 | rettype = init_boolean_type (objfile, 32, 1, "logical"); |
c906108c SS |
2205 | break; |
2206 | case 25: | |
2207 | /* Complex type consisting of two IEEE single precision values. */ | |
19f392bc UW |
2208 | rettype = init_complex_type (objfile, "complex", |
2209 | rs6000_builtin_type (12, objfile)); | |
c906108c SS |
2210 | break; |
2211 | case 26: | |
2212 | /* Complex type consisting of two IEEE double precision values. */ | |
19f392bc UW |
2213 | rettype = init_complex_type (objfile, "double complex", |
2214 | rs6000_builtin_type (13, objfile)); | |
c906108c SS |
2215 | break; |
2216 | case 27: | |
19f392bc | 2217 | rettype = init_integer_type (objfile, 8, 0, "integer*1"); |
c906108c SS |
2218 | break; |
2219 | case 28: | |
19f392bc | 2220 | rettype = init_integer_type (objfile, 16, 0, "integer*2"); |
c906108c SS |
2221 | break; |
2222 | case 29: | |
19f392bc | 2223 | rettype = init_integer_type (objfile, 32, 0, "integer*4"); |
c906108c SS |
2224 | break; |
2225 | case 30: | |
19f392bc | 2226 | rettype = init_character_type (objfile, 16, 0, "wchar"); |
c906108c SS |
2227 | break; |
2228 | case 31: | |
19f392bc | 2229 | rettype = init_integer_type (objfile, 64, 0, "long long"); |
c906108c SS |
2230 | break; |
2231 | case 32: | |
19f392bc | 2232 | rettype = init_integer_type (objfile, 64, 1, "unsigned long long"); |
c906108c SS |
2233 | break; |
2234 | case 33: | |
19f392bc | 2235 | rettype = init_integer_type (objfile, 64, 1, "logical*8"); |
c906108c SS |
2236 | break; |
2237 | case 34: | |
19f392bc | 2238 | rettype = init_integer_type (objfile, 64, 0, "integer*8"); |
c906108c SS |
2239 | break; |
2240 | } | |
2241 | negative_types[-typenum] = rettype; | |
2242 | return rettype; | |
2243 | } | |
2244 | \f | |
2245 | /* This page contains subroutines of read_type. */ | |
2246 | ||
0d5cff50 DE |
2247 | /* Wrapper around method_name_from_physname to flag a complaint |
2248 | if there is an error. */ | |
de17c821 | 2249 | |
0d5cff50 DE |
2250 | static char * |
2251 | stabs_method_name_from_physname (const char *physname) | |
de17c821 DJ |
2252 | { |
2253 | char *method_name; | |
2254 | ||
2255 | method_name = method_name_from_physname (physname); | |
2256 | ||
2257 | if (method_name == NULL) | |
c263362b | 2258 | { |
b98664d3 | 2259 | complaint (_("Method has bad physname %s\n"), physname); |
0d5cff50 | 2260 | return NULL; |
c263362b | 2261 | } |
de17c821 | 2262 | |
0d5cff50 | 2263 | return method_name; |
de17c821 DJ |
2264 | } |
2265 | ||
c906108c SS |
2266 | /* Read member function stabs info for C++ classes. The form of each member |
2267 | function data is: | |
2268 | ||
c5aa993b | 2269 | NAME :: TYPENUM[=type definition] ARGS : PHYSNAME ; |
c906108c SS |
2270 | |
2271 | An example with two member functions is: | |
2272 | ||
c5aa993b | 2273 | afunc1::20=##15;:i;2A.;afunc2::20:i;2A.; |
c906108c SS |
2274 | |
2275 | For the case of overloaded operators, the format is op$::*.funcs, where | |
2276 | $ is the CPLUS_MARKER (usually '$'), `*' holds the place for an operator | |
2277 | name (such as `+=') and `.' marks the end of the operator name. | |
2278 | ||
2279 | Returns 1 for success, 0 for failure. */ | |
2280 | ||
2281 | static int | |
61b30099 | 2282 | read_member_functions (struct stab_field_info *fip, const char **pp, |
a121b7c1 | 2283 | struct type *type, struct objfile *objfile) |
c906108c SS |
2284 | { |
2285 | int nfn_fields = 0; | |
2286 | int length = 0; | |
c906108c SS |
2287 | int i; |
2288 | struct next_fnfield | |
2289 | { | |
2290 | struct next_fnfield *next; | |
2291 | struct fn_field fn_field; | |
c5aa993b JM |
2292 | } |
2293 | *sublist; | |
c906108c SS |
2294 | struct type *look_ahead_type; |
2295 | struct next_fnfieldlist *new_fnlist; | |
2296 | struct next_fnfield *new_sublist; | |
2297 | char *main_fn_name; | |
a121b7c1 | 2298 | const char *p; |
c5aa993b | 2299 | |
c906108c | 2300 | /* Process each list until we find something that is not a member function |
c378eb4e | 2301 | or find the end of the functions. */ |
c906108c SS |
2302 | |
2303 | while (**pp != ';') | |
2304 | { | |
2305 | /* We should be positioned at the start of the function name. | |
c5aa993b | 2306 | Scan forward to find the first ':' and if it is not the |
c378eb4e | 2307 | first of a "::" delimiter, then this is not a member function. */ |
c906108c SS |
2308 | p = *pp; |
2309 | while (*p != ':') | |
2310 | { | |
2311 | p++; | |
2312 | } | |
2313 | if (p[1] != ':') | |
2314 | { | |
2315 | break; | |
2316 | } | |
2317 | ||
2318 | sublist = NULL; | |
2319 | look_ahead_type = NULL; | |
2320 | length = 0; | |
c5aa993b | 2321 | |
61b30099 | 2322 | new_fnlist = OBSTACK_ZALLOC (&fip->obstack, struct next_fnfieldlist); |
c5aa993b | 2323 | |
c906108c SS |
2324 | if ((*pp)[0] == 'o' && (*pp)[1] == 'p' && is_cplus_marker ((*pp)[2])) |
2325 | { | |
2326 | /* This is a completely wierd case. In order to stuff in the | |
2327 | names that might contain colons (the usual name delimiter), | |
2328 | Mike Tiemann defined a different name format which is | |
2329 | signalled if the identifier is "op$". In that case, the | |
2330 | format is "op$::XXXX." where XXXX is the name. This is | |
2331 | used for names like "+" or "=". YUUUUUUUK! FIXME! */ | |
2332 | /* This lets the user type "break operator+". | |
2333 | We could just put in "+" as the name, but that wouldn't | |
2334 | work for "*". */ | |
8343f86c | 2335 | static char opname[32] = "op$"; |
c906108c | 2336 | char *o = opname + 3; |
c5aa993b | 2337 | |
c906108c SS |
2338 | /* Skip past '::'. */ |
2339 | *pp = p + 2; | |
2340 | ||
2341 | STABS_CONTINUE (pp, objfile); | |
2342 | p = *pp; | |
2343 | while (*p != '.') | |
2344 | { | |
2345 | *o++ = *p++; | |
2346 | } | |
2347 | main_fn_name = savestring (opname, o - opname); | |
2348 | /* Skip past '.' */ | |
2349 | *pp = p + 1; | |
2350 | } | |
2351 | else | |
2352 | { | |
2353 | main_fn_name = savestring (*pp, p - *pp); | |
2354 | /* Skip past '::'. */ | |
2355 | *pp = p + 2; | |
2356 | } | |
c5aa993b JM |
2357 | new_fnlist->fn_fieldlist.name = main_fn_name; |
2358 | ||
c906108c SS |
2359 | do |
2360 | { | |
61b30099 | 2361 | new_sublist = OBSTACK_ZALLOC (&fip->obstack, struct next_fnfield); |
c5aa993b | 2362 | |
c906108c SS |
2363 | /* Check for and handle cretinous dbx symbol name continuation! */ |
2364 | if (look_ahead_type == NULL) | |
2365 | { | |
c378eb4e | 2366 | /* Normal case. */ |
c906108c | 2367 | STABS_CONTINUE (pp, objfile); |
c5aa993b JM |
2368 | |
2369 | new_sublist->fn_field.type = read_type (pp, objfile); | |
c906108c SS |
2370 | if (**pp != ':') |
2371 | { | |
2372 | /* Invalid symtab info for member function. */ | |
2373 | return 0; | |
2374 | } | |
2375 | } | |
2376 | else | |
2377 | { | |
2378 | /* g++ version 1 kludge */ | |
c5aa993b | 2379 | new_sublist->fn_field.type = look_ahead_type; |
c906108c SS |
2380 | look_ahead_type = NULL; |
2381 | } | |
c5aa993b | 2382 | |
c906108c SS |
2383 | (*pp)++; |
2384 | p = *pp; | |
2385 | while (*p != ';') | |
2386 | { | |
2387 | p++; | |
2388 | } | |
c5aa993b | 2389 | |
09e2d7c7 DE |
2390 | /* These are methods, not functions. */ |
2391 | if (TYPE_CODE (new_sublist->fn_field.type) == TYPE_CODE_FUNC) | |
2392 | TYPE_CODE (new_sublist->fn_field.type) = TYPE_CODE_METHOD; | |
2393 | else | |
2394 | gdb_assert (TYPE_CODE (new_sublist->fn_field.type) | |
2395 | == TYPE_CODE_METHOD); | |
c906108c | 2396 | |
09e2d7c7 | 2397 | /* If this is just a stub, then we don't have the real name here. */ |
74a9bb82 | 2398 | if (TYPE_STUB (new_sublist->fn_field.type)) |
c906108c | 2399 | { |
4bfb94b8 | 2400 | if (!TYPE_SELF_TYPE (new_sublist->fn_field.type)) |
09e2d7c7 | 2401 | set_type_self_type (new_sublist->fn_field.type, type); |
c5aa993b | 2402 | new_sublist->fn_field.is_stub = 1; |
c906108c | 2403 | } |
09e2d7c7 | 2404 | |
c5aa993b | 2405 | new_sublist->fn_field.physname = savestring (*pp, p - *pp); |
c906108c | 2406 | *pp = p + 1; |
c5aa993b | 2407 | |
c906108c SS |
2408 | /* Set this member function's visibility fields. */ |
2409 | switch (*(*pp)++) | |
2410 | { | |
c5aa993b JM |
2411 | case VISIBILITY_PRIVATE: |
2412 | new_sublist->fn_field.is_private = 1; | |
2413 | break; | |
2414 | case VISIBILITY_PROTECTED: | |
2415 | new_sublist->fn_field.is_protected = 1; | |
2416 | break; | |
c906108c | 2417 | } |
c5aa993b | 2418 | |
c906108c SS |
2419 | STABS_CONTINUE (pp, objfile); |
2420 | switch (**pp) | |
2421 | { | |
c378eb4e | 2422 | case 'A': /* Normal functions. */ |
c5aa993b JM |
2423 | new_sublist->fn_field.is_const = 0; |
2424 | new_sublist->fn_field.is_volatile = 0; | |
2425 | (*pp)++; | |
2426 | break; | |
c378eb4e | 2427 | case 'B': /* `const' member functions. */ |
c5aa993b JM |
2428 | new_sublist->fn_field.is_const = 1; |
2429 | new_sublist->fn_field.is_volatile = 0; | |
2430 | (*pp)++; | |
2431 | break; | |
c378eb4e | 2432 | case 'C': /* `volatile' member function. */ |
c5aa993b JM |
2433 | new_sublist->fn_field.is_const = 0; |
2434 | new_sublist->fn_field.is_volatile = 1; | |
2435 | (*pp)++; | |
2436 | break; | |
c378eb4e | 2437 | case 'D': /* `const volatile' member function. */ |
c5aa993b JM |
2438 | new_sublist->fn_field.is_const = 1; |
2439 | new_sublist->fn_field.is_volatile = 1; | |
2440 | (*pp)++; | |
2441 | break; | |
3e43a32a | 2442 | case '*': /* File compiled with g++ version 1 -- |
c378eb4e | 2443 | no info. */ |
c5aa993b JM |
2444 | case '?': |
2445 | case '.': | |
2446 | break; | |
2447 | default: | |
b98664d3 | 2448 | complaint (_("const/volatile indicator missing, got '%c'"), |
3e43a32a | 2449 | **pp); |
c5aa993b | 2450 | break; |
c906108c | 2451 | } |
c5aa993b | 2452 | |
c906108c SS |
2453 | switch (*(*pp)++) |
2454 | { | |
c5aa993b | 2455 | case '*': |
c906108c SS |
2456 | { |
2457 | int nbits; | |
c5aa993b | 2458 | /* virtual member function, followed by index. |
c906108c SS |
2459 | The sign bit is set to distinguish pointers-to-methods |
2460 | from virtual function indicies. Since the array is | |
2461 | in words, the quantity must be shifted left by 1 | |
2462 | on 16 bit machine, and by 2 on 32 bit machine, forcing | |
2463 | the sign bit out, and usable as a valid index into | |
2464 | the array. Remove the sign bit here. */ | |
c5aa993b | 2465 | new_sublist->fn_field.voffset = |
94e10a22 | 2466 | (0x7fffffff & read_huge_number (pp, ';', &nbits, 0)) + 2; |
c906108c SS |
2467 | if (nbits != 0) |
2468 | return 0; | |
c5aa993b | 2469 | |
c906108c SS |
2470 | STABS_CONTINUE (pp, objfile); |
2471 | if (**pp == ';' || **pp == '\0') | |
2472 | { | |
2473 | /* Must be g++ version 1. */ | |
c5aa993b | 2474 | new_sublist->fn_field.fcontext = 0; |
c906108c SS |
2475 | } |
2476 | else | |
2477 | { | |
2478 | /* Figure out from whence this virtual function came. | |
2479 | It may belong to virtual function table of | |
2480 | one of its baseclasses. */ | |
2481 | look_ahead_type = read_type (pp, objfile); | |
2482 | if (**pp == ':') | |
2483 | { | |
c378eb4e | 2484 | /* g++ version 1 overloaded methods. */ |
c906108c SS |
2485 | } |
2486 | else | |
2487 | { | |
c5aa993b | 2488 | new_sublist->fn_field.fcontext = look_ahead_type; |
c906108c SS |
2489 | if (**pp != ';') |
2490 | { | |
2491 | return 0; | |
2492 | } | |
2493 | else | |
2494 | { | |
2495 | ++*pp; | |
2496 | } | |
2497 | look_ahead_type = NULL; | |
2498 | } | |
2499 | } | |
2500 | break; | |
2501 | } | |
c5aa993b JM |
2502 | case '?': |
2503 | /* static member function. */ | |
4ea09c10 PS |
2504 | { |
2505 | int slen = strlen (main_fn_name); | |
2506 | ||
2507 | new_sublist->fn_field.voffset = VOFFSET_STATIC; | |
2508 | ||
2509 | /* For static member functions, we can't tell if they | |
2510 | are stubbed, as they are put out as functions, and not as | |
2511 | methods. | |
2512 | GCC v2 emits the fully mangled name if | |
2513 | dbxout.c:flag_minimal_debug is not set, so we have to | |
2514 | detect a fully mangled physname here and set is_stub | |
2515 | accordingly. Fully mangled physnames in v2 start with | |
2516 | the member function name, followed by two underscores. | |
2517 | GCC v3 currently always emits stubbed member functions, | |
2518 | but with fully mangled physnames, which start with _Z. */ | |
2519 | if (!(strncmp (new_sublist->fn_field.physname, | |
2520 | main_fn_name, slen) == 0 | |
2521 | && new_sublist->fn_field.physname[slen] == '_' | |
2522 | && new_sublist->fn_field.physname[slen + 1] == '_')) | |
2523 | { | |
2524 | new_sublist->fn_field.is_stub = 1; | |
2525 | } | |
2526 | break; | |
2527 | } | |
c5aa993b JM |
2528 | |
2529 | default: | |
2530 | /* error */ | |
b98664d3 | 2531 | complaint (_("member function type missing, got '%c'"), |
3e43a32a | 2532 | (*pp)[-1]); |
86a73007 TT |
2533 | /* Normal member function. */ |
2534 | /* Fall through. */ | |
c5aa993b JM |
2535 | |
2536 | case '.': | |
2537 | /* normal member function. */ | |
2538 | new_sublist->fn_field.voffset = 0; | |
2539 | new_sublist->fn_field.fcontext = 0; | |
2540 | break; | |
c906108c | 2541 | } |
c5aa993b JM |
2542 | |
2543 | new_sublist->next = sublist; | |
c906108c SS |
2544 | sublist = new_sublist; |
2545 | length++; | |
2546 | STABS_CONTINUE (pp, objfile); | |
2547 | } | |
2548 | while (**pp != ';' && **pp != '\0'); | |
c5aa993b | 2549 | |
c906108c | 2550 | (*pp)++; |
0c867556 | 2551 | STABS_CONTINUE (pp, objfile); |
c5aa993b | 2552 | |
0c867556 PS |
2553 | /* Skip GCC 3.X member functions which are duplicates of the callable |
2554 | constructor/destructor. */ | |
6cbbcdfe KS |
2555 | if (strcmp_iw (main_fn_name, "__base_ctor ") == 0 |
2556 | || strcmp_iw (main_fn_name, "__base_dtor ") == 0 | |
0c867556 | 2557 | || strcmp (main_fn_name, "__deleting_dtor") == 0) |
c906108c | 2558 | { |
0c867556 | 2559 | xfree (main_fn_name); |
c906108c | 2560 | } |
0c867556 PS |
2561 | else |
2562 | { | |
de17c821 DJ |
2563 | int has_destructor = 0, has_other = 0; |
2564 | int is_v3 = 0; | |
2565 | struct next_fnfield *tmp_sublist; | |
2566 | ||
2567 | /* Various versions of GCC emit various mostly-useless | |
2568 | strings in the name field for special member functions. | |
2569 | ||
2570 | For stub methods, we need to defer correcting the name | |
2571 | until we are ready to unstub the method, because the current | |
2572 | name string is used by gdb_mangle_name. The only stub methods | |
2573 | of concern here are GNU v2 operators; other methods have their | |
2574 | names correct (see caveat below). | |
2575 | ||
2576 | For non-stub methods, in GNU v3, we have a complete physname. | |
2577 | Therefore we can safely correct the name now. This primarily | |
2578 | affects constructors and destructors, whose name will be | |
2579 | __comp_ctor or __comp_dtor instead of Foo or ~Foo. Cast | |
2580 | operators will also have incorrect names; for instance, | |
2581 | "operator int" will be named "operator i" (i.e. the type is | |
2582 | mangled). | |
2583 | ||
2584 | For non-stub methods in GNU v2, we have no easy way to | |
2585 | know if we have a complete physname or not. For most | |
2586 | methods the result depends on the platform (if CPLUS_MARKER | |
2587 | can be `$' or `.', it will use minimal debug information, or | |
2588 | otherwise the full physname will be included). | |
2589 | ||
2590 | Rather than dealing with this, we take a different approach. | |
2591 | For v3 mangled names, we can use the full physname; for v2, | |
2592 | we use cplus_demangle_opname (which is actually v2 specific), | |
2593 | because the only interesting names are all operators - once again | |
2594 | barring the caveat below. Skip this process if any method in the | |
2595 | group is a stub, to prevent our fouling up the workings of | |
2596 | gdb_mangle_name. | |
2597 | ||
2598 | The caveat: GCC 2.95.x (and earlier?) put constructors and | |
2599 | destructors in the same method group. We need to split this | |
2600 | into two groups, because they should have different names. | |
2601 | So for each method group we check whether it contains both | |
2602 | routines whose physname appears to be a destructor (the physnames | |
2603 | for and destructors are always provided, due to quirks in v2 | |
2604 | mangling) and routines whose physname does not appear to be a | |
2605 | destructor. If so then we break up the list into two halves. | |
2606 | Even if the constructors and destructors aren't in the same group | |
2607 | the destructor will still lack the leading tilde, so that also | |
2608 | needs to be fixed. | |
2609 | ||
2610 | So, to summarize what we expect and handle here: | |
2611 | ||
2612 | Given Given Real Real Action | |
2613 | method name physname physname method name | |
2614 | ||
2615 | __opi [none] __opi__3Foo operator int opname | |
3e43a32a MS |
2616 | [now or later] |
2617 | Foo _._3Foo _._3Foo ~Foo separate and | |
de17c821 DJ |
2618 | rename |
2619 | operator i _ZN3FoocviEv _ZN3FoocviEv operator int demangle | |
2620 | __comp_ctor _ZN3FooC1ERKS_ _ZN3FooC1ERKS_ Foo demangle | |
2621 | */ | |
2622 | ||
2623 | tmp_sublist = sublist; | |
2624 | while (tmp_sublist != NULL) | |
2625 | { | |
de17c821 DJ |
2626 | if (tmp_sublist->fn_field.physname[0] == '_' |
2627 | && tmp_sublist->fn_field.physname[1] == 'Z') | |
2628 | is_v3 = 1; | |
2629 | ||
2630 | if (is_destructor_name (tmp_sublist->fn_field.physname)) | |
2631 | has_destructor++; | |
2632 | else | |
2633 | has_other++; | |
2634 | ||
2635 | tmp_sublist = tmp_sublist->next; | |
2636 | } | |
2637 | ||
2638 | if (has_destructor && has_other) | |
2639 | { | |
2640 | struct next_fnfieldlist *destr_fnlist; | |
2641 | struct next_fnfield *last_sublist; | |
2642 | ||
2643 | /* Create a new fn_fieldlist for the destructors. */ | |
2644 | ||
61b30099 TT |
2645 | destr_fnlist = OBSTACK_ZALLOC (&fip->obstack, |
2646 | struct next_fnfieldlist); | |
8d749320 | 2647 | |
de17c821 | 2648 | destr_fnlist->fn_fieldlist.name |
48cb83fd JK |
2649 | = obconcat (&objfile->objfile_obstack, "~", |
2650 | new_fnlist->fn_fieldlist.name, (char *) NULL); | |
de17c821 | 2651 | |
8d749320 SM |
2652 | destr_fnlist->fn_fieldlist.fn_fields = |
2653 | XOBNEWVEC (&objfile->objfile_obstack, | |
2654 | struct fn_field, has_destructor); | |
de17c821 DJ |
2655 | memset (destr_fnlist->fn_fieldlist.fn_fields, 0, |
2656 | sizeof (struct fn_field) * has_destructor); | |
2657 | tmp_sublist = sublist; | |
2658 | last_sublist = NULL; | |
2659 | i = 0; | |
2660 | while (tmp_sublist != NULL) | |
2661 | { | |
2662 | if (!is_destructor_name (tmp_sublist->fn_field.physname)) | |
2663 | { | |
2664 | tmp_sublist = tmp_sublist->next; | |
2665 | continue; | |
2666 | } | |
2667 | ||
2668 | destr_fnlist->fn_fieldlist.fn_fields[i++] | |
2669 | = tmp_sublist->fn_field; | |
2670 | if (last_sublist) | |
2671 | last_sublist->next = tmp_sublist->next; | |
2672 | else | |
2673 | sublist = tmp_sublist->next; | |
2674 | last_sublist = tmp_sublist; | |
2675 | tmp_sublist = tmp_sublist->next; | |
2676 | } | |
2677 | ||
2678 | destr_fnlist->fn_fieldlist.length = has_destructor; | |
2679 | destr_fnlist->next = fip->fnlist; | |
2680 | fip->fnlist = destr_fnlist; | |
2681 | nfn_fields++; | |
de17c821 DJ |
2682 | length -= has_destructor; |
2683 | } | |
2684 | else if (is_v3) | |
2685 | { | |
2686 | /* v3 mangling prevents the use of abbreviated physnames, | |
2687 | so we can do this here. There are stubbed methods in v3 | |
2688 | only: | |
2689 | - in -gstabs instead of -gstabs+ | |
2690 | - or for static methods, which are output as a function type | |
2691 | instead of a method type. */ | |
0d5cff50 DE |
2692 | char *new_method_name = |
2693 | stabs_method_name_from_physname (sublist->fn_field.physname); | |
de17c821 | 2694 | |
0d5cff50 DE |
2695 | if (new_method_name != NULL |
2696 | && strcmp (new_method_name, | |
2697 | new_fnlist->fn_fieldlist.name) != 0) | |
2698 | { | |
2699 | new_fnlist->fn_fieldlist.name = new_method_name; | |
2700 | xfree (main_fn_name); | |
2701 | } | |
2702 | else | |
2703 | xfree (new_method_name); | |
de17c821 DJ |
2704 | } |
2705 | else if (has_destructor && new_fnlist->fn_fieldlist.name[0] != '~') | |
2706 | { | |
1754f103 | 2707 | new_fnlist->fn_fieldlist.name = |
0d5cff50 DE |
2708 | obconcat (&objfile->objfile_obstack, |
2709 | "~", main_fn_name, (char *)NULL); | |
de17c821 DJ |
2710 | xfree (main_fn_name); |
2711 | } | |
de17c821 | 2712 | |
e39db4db SM |
2713 | new_fnlist->fn_fieldlist.fn_fields |
2714 | = OBSTACK_CALLOC (&objfile->objfile_obstack, length, fn_field); | |
0c867556 PS |
2715 | for (i = length; (i--, sublist); sublist = sublist->next) |
2716 | { | |
2717 | new_fnlist->fn_fieldlist.fn_fields[i] = sublist->fn_field; | |
2718 | } | |
c5aa993b | 2719 | |
0c867556 PS |
2720 | new_fnlist->fn_fieldlist.length = length; |
2721 | new_fnlist->next = fip->fnlist; | |
2722 | fip->fnlist = new_fnlist; | |
2723 | nfn_fields++; | |
0c867556 | 2724 | } |
c906108c SS |
2725 | } |
2726 | ||
2727 | if (nfn_fields) | |
2728 | { | |
2729 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
2730 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
2731 | TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * nfn_fields); | |
2732 | memset (TYPE_FN_FIELDLISTS (type), 0, | |
2733 | sizeof (struct fn_fieldlist) * nfn_fields); | |
2734 | TYPE_NFN_FIELDS (type) = nfn_fields; | |
c906108c SS |
2735 | } |
2736 | ||
2737 | return 1; | |
2738 | } | |
2739 | ||
2740 | /* Special GNU C++ name. | |
2741 | ||
2742 | Returns 1 for success, 0 for failure. "failure" means that we can't | |
2743 | keep parsing and it's time for error_type(). */ | |
2744 | ||
2745 | static int | |
61b30099 TT |
2746 | read_cpp_abbrev (struct stab_field_info *fip, const char **pp, |
2747 | struct type *type, struct objfile *objfile) | |
c906108c | 2748 | { |
a121b7c1 | 2749 | const char *p; |
0d5cff50 | 2750 | const char *name; |
c906108c SS |
2751 | char cpp_abbrev; |
2752 | struct type *context; | |
2753 | ||
2754 | p = *pp; | |
2755 | if (*++p == 'v') | |
2756 | { | |
2757 | name = NULL; | |
2758 | cpp_abbrev = *++p; | |
2759 | ||
2760 | *pp = p + 1; | |
2761 | ||
2762 | /* At this point, *pp points to something like "22:23=*22...", | |
c5aa993b JM |
2763 | where the type number before the ':' is the "context" and |
2764 | everything after is a regular type definition. Lookup the | |
c378eb4e | 2765 | type, find it's name, and construct the field name. */ |
c906108c SS |
2766 | |
2767 | context = read_type (pp, objfile); | |
2768 | ||
2769 | switch (cpp_abbrev) | |
2770 | { | |
c5aa993b | 2771 | case 'f': /* $vf -- a virtual function table pointer */ |
a737d952 | 2772 | name = TYPE_NAME (context); |
c2bd2ed9 | 2773 | if (name == NULL) |
433759f7 MS |
2774 | { |
2775 | name = ""; | |
2776 | } | |
48cb83fd JK |
2777 | fip->list->field.name = obconcat (&objfile->objfile_obstack, |
2778 | vptr_name, name, (char *) NULL); | |
c5aa993b | 2779 | break; |
c906108c | 2780 | |
c5aa993b | 2781 | case 'b': /* $vb -- a virtual bsomethingorother */ |
a737d952 | 2782 | name = TYPE_NAME (context); |
c5aa993b JM |
2783 | if (name == NULL) |
2784 | { | |
b98664d3 | 2785 | complaint (_("C++ abbreviated type name " |
3e43a32a | 2786 | "unknown at symtab pos %d"), |
23136709 | 2787 | symnum); |
c5aa993b JM |
2788 | name = "FOO"; |
2789 | } | |
48cb83fd JK |
2790 | fip->list->field.name = obconcat (&objfile->objfile_obstack, vb_name, |
2791 | name, (char *) NULL); | |
c5aa993b | 2792 | break; |
c906108c | 2793 | |
c5aa993b | 2794 | default: |
23136709 | 2795 | invalid_cpp_abbrev_complaint (*pp); |
48cb83fd JK |
2796 | fip->list->field.name = obconcat (&objfile->objfile_obstack, |
2797 | "INVALID_CPLUSPLUS_ABBREV", | |
2798 | (char *) NULL); | |
c5aa993b | 2799 | break; |
c906108c SS |
2800 | } |
2801 | ||
2802 | /* At this point, *pp points to the ':'. Skip it and read the | |
c378eb4e | 2803 | field type. */ |
c906108c SS |
2804 | |
2805 | p = ++(*pp); | |
2806 | if (p[-1] != ':') | |
2807 | { | |
23136709 | 2808 | invalid_cpp_abbrev_complaint (*pp); |
c906108c SS |
2809 | return 0; |
2810 | } | |
2811 | fip->list->field.type = read_type (pp, objfile); | |
2812 | if (**pp == ',') | |
c5aa993b | 2813 | (*pp)++; /* Skip the comma. */ |
c906108c SS |
2814 | else |
2815 | return 0; | |
2816 | ||
2817 | { | |
2818 | int nbits; | |
433759f7 | 2819 | |
f41f5e61 PA |
2820 | SET_FIELD_BITPOS (fip->list->field, |
2821 | read_huge_number (pp, ';', &nbits, 0)); | |
c906108c SS |
2822 | if (nbits != 0) |
2823 | return 0; | |
2824 | } | |
2825 | /* This field is unpacked. */ | |
2826 | FIELD_BITSIZE (fip->list->field) = 0; | |
2827 | fip->list->visibility = VISIBILITY_PRIVATE; | |
2828 | } | |
2829 | else | |
2830 | { | |
23136709 | 2831 | invalid_cpp_abbrev_complaint (*pp); |
c906108c | 2832 | /* We have no idea what syntax an unrecognized abbrev would have, so |
c5aa993b JM |
2833 | better return 0. If we returned 1, we would need to at least advance |
2834 | *pp to avoid an infinite loop. */ | |
c906108c SS |
2835 | return 0; |
2836 | } | |
2837 | return 1; | |
2838 | } | |
2839 | ||
2840 | static void | |
61b30099 TT |
2841 | read_one_struct_field (struct stab_field_info *fip, const char **pp, |
2842 | const char *p, struct type *type, | |
2843 | struct objfile *objfile) | |
c906108c | 2844 | { |
5e2b427d UW |
2845 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
2846 | ||
224c3ddb SM |
2847 | fip->list->field.name |
2848 | = (const char *) obstack_copy0 (&objfile->objfile_obstack, *pp, p - *pp); | |
c906108c SS |
2849 | *pp = p + 1; |
2850 | ||
c378eb4e | 2851 | /* This means we have a visibility for a field coming. */ |
c906108c SS |
2852 | if (**pp == '/') |
2853 | { | |
2854 | (*pp)++; | |
c5aa993b | 2855 | fip->list->visibility = *(*pp)++; |
c906108c SS |
2856 | } |
2857 | else | |
2858 | { | |
2859 | /* normal dbx-style format, no explicit visibility */ | |
c5aa993b | 2860 | fip->list->visibility = VISIBILITY_PUBLIC; |
c906108c SS |
2861 | } |
2862 | ||
c5aa993b | 2863 | fip->list->field.type = read_type (pp, objfile); |
c906108c SS |
2864 | if (**pp == ':') |
2865 | { | |
2866 | p = ++(*pp); | |
2867 | #if 0 | |
c378eb4e | 2868 | /* Possible future hook for nested types. */ |
c906108c SS |
2869 | if (**pp == '!') |
2870 | { | |
c5aa993b | 2871 | fip->list->field.bitpos = (long) -2; /* nested type */ |
c906108c SS |
2872 | p = ++(*pp); |
2873 | } | |
c5aa993b JM |
2874 | else |
2875 | ...; | |
c906108c | 2876 | #endif |
c5aa993b | 2877 | while (*p != ';') |
c906108c SS |
2878 | { |
2879 | p++; | |
2880 | } | |
2881 | /* Static class member. */ | |
2882 | SET_FIELD_PHYSNAME (fip->list->field, savestring (*pp, p - *pp)); | |
2883 | *pp = p + 1; | |
2884 | return; | |
2885 | } | |
2886 | else if (**pp != ',') | |
2887 | { | |
2888 | /* Bad structure-type format. */ | |
23136709 | 2889 | stabs_general_complaint ("bad structure-type format"); |
c906108c SS |
2890 | return; |
2891 | } | |
2892 | ||
2893 | (*pp)++; /* Skip the comma. */ | |
2894 | ||
2895 | { | |
2896 | int nbits; | |
433759f7 | 2897 | |
f41f5e61 PA |
2898 | SET_FIELD_BITPOS (fip->list->field, |
2899 | read_huge_number (pp, ',', &nbits, 0)); | |
c906108c SS |
2900 | if (nbits != 0) |
2901 | { | |
23136709 | 2902 | stabs_general_complaint ("bad structure-type format"); |
c906108c SS |
2903 | return; |
2904 | } | |
94e10a22 | 2905 | FIELD_BITSIZE (fip->list->field) = read_huge_number (pp, ';', &nbits, 0); |
c906108c SS |
2906 | if (nbits != 0) |
2907 | { | |
23136709 | 2908 | stabs_general_complaint ("bad structure-type format"); |
c906108c SS |
2909 | return; |
2910 | } | |
2911 | } | |
2912 | ||
2913 | if (FIELD_BITPOS (fip->list->field) == 0 | |
2914 | && FIELD_BITSIZE (fip->list->field) == 0) | |
2915 | { | |
2916 | /* This can happen in two cases: (1) at least for gcc 2.4.5 or so, | |
c5aa993b JM |
2917 | it is a field which has been optimized out. The correct stab for |
2918 | this case is to use VISIBILITY_IGNORE, but that is a recent | |
2919 | invention. (2) It is a 0-size array. For example | |
e2e0b3e5 | 2920 | union { int num; char str[0]; } foo. Printing _("<no value>" for |
c5aa993b JM |
2921 | str in "p foo" is OK, since foo.str (and thus foo.str[3]) |
2922 | will continue to work, and a 0-size array as a whole doesn't | |
2923 | have any contents to print. | |
2924 | ||
2925 | I suspect this probably could also happen with gcc -gstabs (not | |
2926 | -gstabs+) for static fields, and perhaps other C++ extensions. | |
2927 | Hopefully few people use -gstabs with gdb, since it is intended | |
2928 | for dbx compatibility. */ | |
c906108c SS |
2929 | |
2930 | /* Ignore this field. */ | |
c5aa993b | 2931 | fip->list->visibility = VISIBILITY_IGNORE; |
c906108c SS |
2932 | } |
2933 | else | |
2934 | { | |
2935 | /* Detect an unpacked field and mark it as such. | |
c5aa993b JM |
2936 | dbx gives a bit size for all fields. |
2937 | Note that forward refs cannot be packed, | |
2938 | and treat enums as if they had the width of ints. */ | |
c906108c SS |
2939 | |
2940 | struct type *field_type = check_typedef (FIELD_TYPE (fip->list->field)); | |
2941 | ||
2942 | if (TYPE_CODE (field_type) != TYPE_CODE_INT | |
2943 | && TYPE_CODE (field_type) != TYPE_CODE_RANGE | |
2944 | && TYPE_CODE (field_type) != TYPE_CODE_BOOL | |
2945 | && TYPE_CODE (field_type) != TYPE_CODE_ENUM) | |
2946 | { | |
2947 | FIELD_BITSIZE (fip->list->field) = 0; | |
2948 | } | |
c5aa993b | 2949 | if ((FIELD_BITSIZE (fip->list->field) |
c906108c SS |
2950 | == TARGET_CHAR_BIT * TYPE_LENGTH (field_type) |
2951 | || (TYPE_CODE (field_type) == TYPE_CODE_ENUM | |
9a76efb6 | 2952 | && FIELD_BITSIZE (fip->list->field) |
5e2b427d | 2953 | == gdbarch_int_bit (gdbarch)) |
c5aa993b | 2954 | ) |
c906108c SS |
2955 | && |
2956 | FIELD_BITPOS (fip->list->field) % 8 == 0) | |
2957 | { | |
2958 | FIELD_BITSIZE (fip->list->field) = 0; | |
2959 | } | |
2960 | } | |
2961 | } | |
2962 | ||
2963 | ||
2964 | /* Read struct or class data fields. They have the form: | |
2965 | ||
c5aa993b | 2966 | NAME : [VISIBILITY] TYPENUM , BITPOS , BITSIZE ; |
c906108c SS |
2967 | |
2968 | At the end, we see a semicolon instead of a field. | |
2969 | ||
2970 | In C++, this may wind up being NAME:?TYPENUM:PHYSNAME; for | |
2971 | a static field. | |
2972 | ||
2973 | The optional VISIBILITY is one of: | |
2974 | ||
c5aa993b JM |
2975 | '/0' (VISIBILITY_PRIVATE) |
2976 | '/1' (VISIBILITY_PROTECTED) | |
2977 | '/2' (VISIBILITY_PUBLIC) | |
2978 | '/9' (VISIBILITY_IGNORE) | |
c906108c SS |
2979 | |
2980 | or nothing, for C style fields with public visibility. | |
2981 | ||
2982 | Returns 1 for success, 0 for failure. */ | |
2983 | ||
2984 | static int | |
61b30099 TT |
2985 | read_struct_fields (struct stab_field_info *fip, const char **pp, |
2986 | struct type *type, struct objfile *objfile) | |
c906108c | 2987 | { |
a121b7c1 | 2988 | const char *p; |
fe978cb0 | 2989 | struct nextfield *newobj; |
c906108c SS |
2990 | |
2991 | /* We better set p right now, in case there are no fields at all... */ | |
2992 | ||
2993 | p = *pp; | |
2994 | ||
2995 | /* Read each data member type until we find the terminating ';' at the end of | |
2996 | the data member list, or break for some other reason such as finding the | |
c378eb4e | 2997 | start of the member function list. */ |
fedbd091 | 2998 | /* Stab string for structure/union does not end with two ';' in |
c378eb4e | 2999 | SUN C compiler 5.3 i.e. F6U2, hence check for end of string. */ |
c906108c | 3000 | |
fedbd091 | 3001 | while (**pp != ';' && **pp != '\0') |
c906108c | 3002 | { |
c906108c SS |
3003 | STABS_CONTINUE (pp, objfile); |
3004 | /* Get space to record the next field's data. */ | |
61b30099 | 3005 | newobj = OBSTACK_ZALLOC (&fip->obstack, struct nextfield); |
8d749320 | 3006 | |
fe978cb0 PA |
3007 | newobj->next = fip->list; |
3008 | fip->list = newobj; | |
c906108c SS |
3009 | |
3010 | /* Get the field name. */ | |
3011 | p = *pp; | |
3012 | ||
3013 | /* If is starts with CPLUS_MARKER it is a special abbreviation, | |
c5aa993b JM |
3014 | unless the CPLUS_MARKER is followed by an underscore, in |
3015 | which case it is just the name of an anonymous type, which we | |
3016 | should handle like any other type name. */ | |
c906108c SS |
3017 | |
3018 | if (is_cplus_marker (p[0]) && p[1] != '_') | |
3019 | { | |
3020 | if (!read_cpp_abbrev (fip, pp, type, objfile)) | |
3021 | return 0; | |
3022 | continue; | |
3023 | } | |
3024 | ||
3025 | /* Look for the ':' that separates the field name from the field | |
c5aa993b JM |
3026 | values. Data members are delimited by a single ':', while member |
3027 | functions are delimited by a pair of ':'s. When we hit the member | |
c378eb4e | 3028 | functions (if any), terminate scan loop and return. */ |
c906108c | 3029 | |
c5aa993b | 3030 | while (*p != ':' && *p != '\0') |
c906108c SS |
3031 | { |
3032 | p++; | |
3033 | } | |
3034 | if (*p == '\0') | |
3035 | return 0; | |
3036 | ||
3037 | /* Check to see if we have hit the member functions yet. */ | |
3038 | if (p[1] == ':') | |
3039 | { | |
3040 | break; | |
3041 | } | |
3042 | read_one_struct_field (fip, pp, p, type, objfile); | |
3043 | } | |
3044 | if (p[0] == ':' && p[1] == ':') | |
3045 | { | |
1b831c93 AC |
3046 | /* (the deleted) chill the list of fields: the last entry (at |
3047 | the head) is a partially constructed entry which we now | |
c378eb4e | 3048 | scrub. */ |
c5aa993b | 3049 | fip->list = fip->list->next; |
c906108c SS |
3050 | } |
3051 | return 1; | |
3052 | } | |
9846de1b | 3053 | /* *INDENT-OFF* */ |
c906108c SS |
3054 | /* The stabs for C++ derived classes contain baseclass information which |
3055 | is marked by a '!' character after the total size. This function is | |
3056 | called when we encounter the baseclass marker, and slurps up all the | |
3057 | baseclass information. | |
3058 | ||
3059 | Immediately following the '!' marker is the number of base classes that | |
3060 | the class is derived from, followed by information for each base class. | |
3061 | For each base class, there are two visibility specifiers, a bit offset | |
3062 | to the base class information within the derived class, a reference to | |
3063 | the type for the base class, and a terminating semicolon. | |
3064 | ||
3065 | A typical example, with two base classes, would be "!2,020,19;0264,21;". | |
3066 | ^^ ^ ^ ^ ^ ^ ^ | |
3067 | Baseclass information marker __________________|| | | | | | | | |
3068 | Number of baseclasses __________________________| | | | | | | | |
3069 | Visibility specifiers (2) ________________________| | | | | | | |
3070 | Offset in bits from start of class _________________| | | | | | |
3071 | Type number for base class ___________________________| | | | | |
3072 | Visibility specifiers (2) _______________________________| | | | |
3073 | Offset in bits from start of class ________________________| | | |
3074 | Type number of base class ____________________________________| | |
3075 | ||
3076 | Return 1 for success, 0 for (error-type-inducing) failure. */ | |
9846de1b | 3077 | /* *INDENT-ON* */ |
c906108c | 3078 | |
c5aa993b JM |
3079 | |
3080 | ||
c906108c | 3081 | static int |
61b30099 TT |
3082 | read_baseclasses (struct stab_field_info *fip, const char **pp, |
3083 | struct type *type, struct objfile *objfile) | |
c906108c SS |
3084 | { |
3085 | int i; | |
fe978cb0 | 3086 | struct nextfield *newobj; |
c906108c SS |
3087 | |
3088 | if (**pp != '!') | |
3089 | { | |
3090 | return 1; | |
3091 | } | |
3092 | else | |
3093 | { | |
c378eb4e | 3094 | /* Skip the '!' baseclass information marker. */ |
c906108c SS |
3095 | (*pp)++; |
3096 | } | |
3097 | ||
3098 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
3099 | { | |
3100 | int nbits; | |
433759f7 | 3101 | |
94e10a22 | 3102 | TYPE_N_BASECLASSES (type) = read_huge_number (pp, ',', &nbits, 0); |
c906108c SS |
3103 | if (nbits != 0) |
3104 | return 0; | |
3105 | } | |
3106 | ||
3107 | #if 0 | |
3108 | /* Some stupid compilers have trouble with the following, so break | |
3109 | it up into simpler expressions. */ | |
3110 | TYPE_FIELD_VIRTUAL_BITS (type) = (B_TYPE *) | |
3111 | TYPE_ALLOC (type, B_BYTES (TYPE_N_BASECLASSES (type))); | |
3112 | #else | |
3113 | { | |
3114 | int num_bytes = B_BYTES (TYPE_N_BASECLASSES (type)); | |
3115 | char *pointer; | |
3116 | ||
3117 | pointer = (char *) TYPE_ALLOC (type, num_bytes); | |
3118 | TYPE_FIELD_VIRTUAL_BITS (type) = (B_TYPE *) pointer; | |
3119 | } | |
3120 | #endif /* 0 */ | |
3121 | ||
3122 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), TYPE_N_BASECLASSES (type)); | |
3123 | ||
3124 | for (i = 0; i < TYPE_N_BASECLASSES (type); i++) | |
3125 | { | |
61b30099 | 3126 | newobj = OBSTACK_ZALLOC (&fip->obstack, struct nextfield); |
8d749320 | 3127 | |
fe978cb0 PA |
3128 | newobj->next = fip->list; |
3129 | fip->list = newobj; | |
3130 | FIELD_BITSIZE (newobj->field) = 0; /* This should be an unpacked | |
c378eb4e | 3131 | field! */ |
c906108c SS |
3132 | |
3133 | STABS_CONTINUE (pp, objfile); | |
3134 | switch (**pp) | |
3135 | { | |
c5aa993b | 3136 | case '0': |
c378eb4e | 3137 | /* Nothing to do. */ |
c5aa993b JM |
3138 | break; |
3139 | case '1': | |
3140 | SET_TYPE_FIELD_VIRTUAL (type, i); | |
3141 | break; | |
3142 | default: | |
3143 | /* Unknown character. Complain and treat it as non-virtual. */ | |
3144 | { | |
b98664d3 | 3145 | complaint (_("Unknown virtual character `%c' for baseclass"), |
3e43a32a | 3146 | **pp); |
c5aa993b | 3147 | } |
c906108c SS |
3148 | } |
3149 | ++(*pp); | |
3150 | ||
fe978cb0 PA |
3151 | newobj->visibility = *(*pp)++; |
3152 | switch (newobj->visibility) | |
c906108c | 3153 | { |
c5aa993b JM |
3154 | case VISIBILITY_PRIVATE: |
3155 | case VISIBILITY_PROTECTED: | |
3156 | case VISIBILITY_PUBLIC: | |
3157 | break; | |
3158 | default: | |
3159 | /* Bad visibility format. Complain and treat it as | |
3160 | public. */ | |
3161 | { | |
b98664d3 | 3162 | complaint (_("Unknown visibility `%c' for baseclass"), |
fe978cb0 PA |
3163 | newobj->visibility); |
3164 | newobj->visibility = VISIBILITY_PUBLIC; | |
c5aa993b | 3165 | } |
c906108c SS |
3166 | } |
3167 | ||
3168 | { | |
3169 | int nbits; | |
c5aa993b | 3170 | |
c906108c SS |
3171 | /* The remaining value is the bit offset of the portion of the object |
3172 | corresponding to this baseclass. Always zero in the absence of | |
3173 | multiple inheritance. */ | |
3174 | ||
fe978cb0 | 3175 | SET_FIELD_BITPOS (newobj->field, read_huge_number (pp, ',', &nbits, 0)); |
c906108c SS |
3176 | if (nbits != 0) |
3177 | return 0; | |
3178 | } | |
3179 | ||
3180 | /* The last piece of baseclass information is the type of the | |
c5aa993b | 3181 | base class. Read it, and remember it's type name as this |
c378eb4e | 3182 | field's name. */ |
c906108c | 3183 | |
fe978cb0 | 3184 | newobj->field.type = read_type (pp, objfile); |
a737d952 | 3185 | newobj->field.name = TYPE_NAME (newobj->field.type); |
c906108c | 3186 | |
c378eb4e | 3187 | /* Skip trailing ';' and bump count of number of fields seen. */ |
c906108c SS |
3188 | if (**pp == ';') |
3189 | (*pp)++; | |
3190 | else | |
3191 | return 0; | |
3192 | } | |
3193 | return 1; | |
3194 | } | |
3195 | ||
3196 | /* The tail end of stabs for C++ classes that contain a virtual function | |
3197 | pointer contains a tilde, a %, and a type number. | |
3198 | The type number refers to the base class (possibly this class itself) which | |
3199 | contains the vtable pointer for the current class. | |
3200 | ||
3201 | This function is called when we have parsed all the method declarations, | |
3202 | so we can look for the vptr base class info. */ | |
3203 | ||
3204 | static int | |
61b30099 TT |
3205 | read_tilde_fields (struct stab_field_info *fip, const char **pp, |
3206 | struct type *type, struct objfile *objfile) | |
c906108c | 3207 | { |
a121b7c1 | 3208 | const char *p; |
c906108c SS |
3209 | |
3210 | STABS_CONTINUE (pp, objfile); | |
3211 | ||
c378eb4e | 3212 | /* If we are positioned at a ';', then skip it. */ |
c906108c SS |
3213 | if (**pp == ';') |
3214 | { | |
3215 | (*pp)++; | |
3216 | } | |
3217 | ||
3218 | if (**pp == '~') | |
3219 | { | |
3220 | (*pp)++; | |
3221 | ||
3222 | if (**pp == '=' || **pp == '+' || **pp == '-') | |
3223 | { | |
3224 | /* Obsolete flags that used to indicate the presence | |
c378eb4e | 3225 | of constructors and/or destructors. */ |
c906108c SS |
3226 | (*pp)++; |
3227 | } | |
3228 | ||
3229 | /* Read either a '%' or the final ';'. */ | |
3230 | if (*(*pp)++ == '%') | |
3231 | { | |
3232 | /* The next number is the type number of the base class | |
3233 | (possibly our own class) which supplies the vtable for | |
3234 | this class. Parse it out, and search that class to find | |
3235 | its vtable pointer, and install those into TYPE_VPTR_BASETYPE | |
3236 | and TYPE_VPTR_FIELDNO. */ | |
3237 | ||
3238 | struct type *t; | |
3239 | int i; | |
3240 | ||
3241 | t = read_type (pp, objfile); | |
3242 | p = (*pp)++; | |
3243 | while (*p != '\0' && *p != ';') | |
3244 | { | |
3245 | p++; | |
3246 | } | |
3247 | if (*p == '\0') | |
3248 | { | |
3249 | /* Premature end of symbol. */ | |
3250 | return 0; | |
3251 | } | |
c5aa993b | 3252 | |
ae6ae975 | 3253 | set_type_vptr_basetype (type, t); |
c378eb4e | 3254 | if (type == t) /* Our own class provides vtbl ptr. */ |
c906108c SS |
3255 | { |
3256 | for (i = TYPE_NFIELDS (t) - 1; | |
3257 | i >= TYPE_N_BASECLASSES (t); | |
3258 | --i) | |
3259 | { | |
0d5cff50 | 3260 | const char *name = TYPE_FIELD_NAME (t, i); |
433759f7 | 3261 | |
8343f86c | 3262 | if (!strncmp (name, vptr_name, sizeof (vptr_name) - 2) |
74451869 | 3263 | && is_cplus_marker (name[sizeof (vptr_name) - 2])) |
c906108c | 3264 | { |
ae6ae975 | 3265 | set_type_vptr_fieldno (type, i); |
c906108c SS |
3266 | goto gotit; |
3267 | } | |
3268 | } | |
3269 | /* Virtual function table field not found. */ | |
b98664d3 | 3270 | complaint (_("virtual function table pointer " |
3e43a32a | 3271 | "not found when defining class `%s'"), |
23136709 | 3272 | TYPE_NAME (type)); |
c906108c SS |
3273 | return 0; |
3274 | } | |
3275 | else | |
3276 | { | |
ae6ae975 | 3277 | set_type_vptr_fieldno (type, TYPE_VPTR_FIELDNO (t)); |
c906108c SS |
3278 | } |
3279 | ||
c5aa993b | 3280 | gotit: |
c906108c SS |
3281 | *pp = p + 1; |
3282 | } | |
3283 | } | |
3284 | return 1; | |
3285 | } | |
3286 | ||
3287 | static int | |
61b30099 | 3288 | attach_fn_fields_to_type (struct stab_field_info *fip, struct type *type) |
c906108c | 3289 | { |
52f0bd74 | 3290 | int n; |
c906108c SS |
3291 | |
3292 | for (n = TYPE_NFN_FIELDS (type); | |
c5aa993b JM |
3293 | fip->fnlist != NULL; |
3294 | fip->fnlist = fip->fnlist->next) | |
c906108c | 3295 | { |
c378eb4e | 3296 | --n; /* Circumvent Sun3 compiler bug. */ |
c5aa993b | 3297 | TYPE_FN_FIELDLISTS (type)[n] = fip->fnlist->fn_fieldlist; |
c906108c SS |
3298 | } |
3299 | return 1; | |
3300 | } | |
3301 | ||
c906108c SS |
3302 | /* Create the vector of fields, and record how big it is. |
3303 | We need this info to record proper virtual function table information | |
3304 | for this class's virtual functions. */ | |
3305 | ||
3306 | static int | |
61b30099 | 3307 | attach_fields_to_type (struct stab_field_info *fip, struct type *type, |
fba45db2 | 3308 | struct objfile *objfile) |
c906108c | 3309 | { |
52f0bd74 AC |
3310 | int nfields = 0; |
3311 | int non_public_fields = 0; | |
3312 | struct nextfield *scan; | |
c906108c SS |
3313 | |
3314 | /* Count up the number of fields that we have, as well as taking note of | |
3315 | whether or not there are any non-public fields, which requires us to | |
3316 | allocate and build the private_field_bits and protected_field_bits | |
c378eb4e | 3317 | bitfields. */ |
c906108c | 3318 | |
c5aa993b | 3319 | for (scan = fip->list; scan != NULL; scan = scan->next) |
c906108c SS |
3320 | { |
3321 | nfields++; | |
c5aa993b | 3322 | if (scan->visibility != VISIBILITY_PUBLIC) |
c906108c SS |
3323 | { |
3324 | non_public_fields++; | |
3325 | } | |
3326 | } | |
3327 | ||
3328 | /* Now we know how many fields there are, and whether or not there are any | |
3329 | non-public fields. Record the field count, allocate space for the | |
c378eb4e | 3330 | array of fields, and create blank visibility bitfields if necessary. */ |
c906108c SS |
3331 | |
3332 | TYPE_NFIELDS (type) = nfields; | |
3333 | TYPE_FIELDS (type) = (struct field *) | |
3334 | TYPE_ALLOC (type, sizeof (struct field) * nfields); | |
3335 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields); | |
3336 | ||
3337 | if (non_public_fields) | |
3338 | { | |
3339 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
3340 | ||
3341 | TYPE_FIELD_PRIVATE_BITS (type) = | |
3342 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
3343 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
3344 | ||
3345 | TYPE_FIELD_PROTECTED_BITS (type) = | |
3346 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
3347 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
3348 | ||
3349 | TYPE_FIELD_IGNORE_BITS (type) = | |
3350 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
3351 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
3352 | } | |
3353 | ||
c378eb4e MS |
3354 | /* Copy the saved-up fields into the field vector. Start from the |
3355 | head of the list, adding to the tail of the field array, so that | |
3356 | they end up in the same order in the array in which they were | |
3357 | added to the list. */ | |
c906108c SS |
3358 | |
3359 | while (nfields-- > 0) | |
3360 | { | |
c5aa993b JM |
3361 | TYPE_FIELD (type, nfields) = fip->list->field; |
3362 | switch (fip->list->visibility) | |
c906108c | 3363 | { |
c5aa993b JM |
3364 | case VISIBILITY_PRIVATE: |
3365 | SET_TYPE_FIELD_PRIVATE (type, nfields); | |
3366 | break; | |
c906108c | 3367 | |
c5aa993b JM |
3368 | case VISIBILITY_PROTECTED: |
3369 | SET_TYPE_FIELD_PROTECTED (type, nfields); | |
3370 | break; | |
c906108c | 3371 | |
c5aa993b JM |
3372 | case VISIBILITY_IGNORE: |
3373 | SET_TYPE_FIELD_IGNORE (type, nfields); | |
3374 | break; | |
c906108c | 3375 | |
c5aa993b JM |
3376 | case VISIBILITY_PUBLIC: |
3377 | break; | |
c906108c | 3378 | |
c5aa993b JM |
3379 | default: |
3380 | /* Unknown visibility. Complain and treat it as public. */ | |
3381 | { | |
b98664d3 | 3382 | complaint (_("Unknown visibility `%c' for field"), |
23136709 | 3383 | fip->list->visibility); |
c5aa993b JM |
3384 | } |
3385 | break; | |
c906108c | 3386 | } |
c5aa993b | 3387 | fip->list = fip->list->next; |
c906108c SS |
3388 | } |
3389 | return 1; | |
3390 | } | |
3391 | ||
2ae1c2d2 | 3392 | |
2ae1c2d2 JB |
3393 | /* Complain that the compiler has emitted more than one definition for the |
3394 | structure type TYPE. */ | |
3395 | static void | |
3396 | complain_about_struct_wipeout (struct type *type) | |
3397 | { | |
0d5cff50 DE |
3398 | const char *name = ""; |
3399 | const char *kind = ""; | |
2ae1c2d2 | 3400 | |
e86ca25f | 3401 | if (TYPE_NAME (type)) |
2ae1c2d2 | 3402 | { |
e86ca25f | 3403 | name = TYPE_NAME (type); |
2ae1c2d2 JB |
3404 | switch (TYPE_CODE (type)) |
3405 | { | |
3406 | case TYPE_CODE_STRUCT: kind = "struct "; break; | |
3407 | case TYPE_CODE_UNION: kind = "union "; break; | |
3408 | case TYPE_CODE_ENUM: kind = "enum "; break; | |
3409 | default: kind = ""; | |
3410 | } | |
3411 | } | |
2ae1c2d2 JB |
3412 | else |
3413 | { | |
3414 | name = "<unknown>"; | |
3415 | kind = ""; | |
3416 | } | |
3417 | ||
b98664d3 | 3418 | complaint (_("struct/union type gets multiply defined: %s%s"), kind, name); |
2ae1c2d2 JB |
3419 | } |
3420 | ||
621791b8 PM |
3421 | /* Set the length for all variants of a same main_type, which are |
3422 | connected in the closed chain. | |
3423 | ||
3424 | This is something that needs to be done when a type is defined *after* | |
3425 | some cross references to this type have already been read. Consider | |
3426 | for instance the following scenario where we have the following two | |
3427 | stabs entries: | |
3428 | ||
3429 | .stabs "t:p(0,21)=*(0,22)=k(0,23)=xsdummy:",160,0,28,-24 | |
3430 | .stabs "dummy:T(0,23)=s16x:(0,1),0,3[...]" | |
3431 | ||
3432 | A stubbed version of type dummy is created while processing the first | |
3433 | stabs entry. The length of that type is initially set to zero, since | |
3434 | it is unknown at this point. Also, a "constant" variation of type | |
3435 | "dummy" is created as well (this is the "(0,22)=k(0,23)" section of | |
3436 | the stabs line). | |
3437 | ||
3438 | The second stabs entry allows us to replace the stubbed definition | |
3439 | with the real definition. However, we still need to adjust the length | |
3440 | of the "constant" variation of that type, as its length was left | |
3441 | untouched during the main type replacement... */ | |
3442 | ||
3443 | static void | |
9e69f3b6 | 3444 | set_length_in_type_chain (struct type *type) |
621791b8 PM |
3445 | { |
3446 | struct type *ntype = TYPE_CHAIN (type); | |
3447 | ||
3448 | while (ntype != type) | |
3449 | { | |
3450 | if (TYPE_LENGTH(ntype) == 0) | |
3451 | TYPE_LENGTH (ntype) = TYPE_LENGTH (type); | |
3452 | else | |
3453 | complain_about_struct_wipeout (ntype); | |
3454 | ntype = TYPE_CHAIN (ntype); | |
3455 | } | |
3456 | } | |
2ae1c2d2 | 3457 | |
c906108c SS |
3458 | /* Read the description of a structure (or union type) and return an object |
3459 | describing the type. | |
3460 | ||
3461 | PP points to a character pointer that points to the next unconsumed token | |
b021a221 | 3462 | in the stabs string. For example, given stabs "A:T4=s4a:1,0,32;;", |
c906108c SS |
3463 | *PP will point to "4a:1,0,32;;". |
3464 | ||
3465 | TYPE points to an incomplete type that needs to be filled in. | |
3466 | ||
3467 | OBJFILE points to the current objfile from which the stabs information is | |
3468 | being read. (Note that it is redundant in that TYPE also contains a pointer | |
3469 | to this same objfile, so it might be a good idea to eliminate it. FIXME). | |
c5aa993b | 3470 | */ |
c906108c SS |
3471 | |
3472 | static struct type * | |
a121b7c1 | 3473 | read_struct_type (const char **pp, struct type *type, enum type_code type_code, |
2ae1c2d2 | 3474 | struct objfile *objfile) |
c906108c | 3475 | { |
61b30099 | 3476 | struct stab_field_info fi; |
c906108c | 3477 | |
2ae1c2d2 JB |
3478 | /* When describing struct/union/class types in stabs, G++ always drops |
3479 | all qualifications from the name. So if you've got: | |
3480 | struct A { ... struct B { ... }; ... }; | |
3481 | then G++ will emit stabs for `struct A::B' that call it simply | |
3482 | `struct B'. Obviously, if you've got a real top-level definition for | |
3483 | `struct B', or other nested definitions, this is going to cause | |
3484 | problems. | |
3485 | ||
3486 | Obviously, GDB can't fix this by itself, but it can at least avoid | |
3487 | scribbling on existing structure type objects when new definitions | |
3488 | appear. */ | |
3489 | if (! (TYPE_CODE (type) == TYPE_CODE_UNDEF | |
3490 | || TYPE_STUB (type))) | |
3491 | { | |
3492 | complain_about_struct_wipeout (type); | |
3493 | ||
3494 | /* It's probably best to return the type unchanged. */ | |
3495 | return type; | |
3496 | } | |
3497 | ||
c906108c | 3498 | INIT_CPLUS_SPECIFIC (type); |
2ae1c2d2 | 3499 | TYPE_CODE (type) = type_code; |
876cecd0 | 3500 | TYPE_STUB (type) = 0; |
c906108c SS |
3501 | |
3502 | /* First comes the total size in bytes. */ | |
3503 | ||
3504 | { | |
3505 | int nbits; | |
433759f7 | 3506 | |
94e10a22 | 3507 | TYPE_LENGTH (type) = read_huge_number (pp, 0, &nbits, 0); |
c906108c | 3508 | if (nbits != 0) |
61b30099 | 3509 | return error_type (pp, objfile); |
621791b8 | 3510 | set_length_in_type_chain (type); |
c906108c SS |
3511 | } |
3512 | ||
3513 | /* Now read the baseclasses, if any, read the regular C struct or C++ | |
3514 | class member fields, attach the fields to the type, read the C++ | |
3515 | member functions, attach them to the type, and then read any tilde | |
3e43a32a | 3516 | field (baseclass specifier for the class holding the main vtable). */ |
c906108c SS |
3517 | |
3518 | if (!read_baseclasses (&fi, pp, type, objfile) | |
3519 | || !read_struct_fields (&fi, pp, type, objfile) | |
3520 | || !attach_fields_to_type (&fi, type, objfile) | |
3521 | || !read_member_functions (&fi, pp, type, objfile) | |
3522 | || !attach_fn_fields_to_type (&fi, type) | |
3523 | || !read_tilde_fields (&fi, pp, type, objfile)) | |
3524 | { | |
3525 | type = error_type (pp, objfile); | |
3526 | } | |
3527 | ||
c906108c SS |
3528 | return (type); |
3529 | } | |
3530 | ||
3531 | /* Read a definition of an array type, | |
3532 | and create and return a suitable type object. | |
3533 | Also creates a range type which represents the bounds of that | |
3534 | array. */ | |
3535 | ||
3536 | static struct type * | |
a121b7c1 | 3537 | read_array_type (const char **pp, struct type *type, |
fba45db2 | 3538 | struct objfile *objfile) |
c906108c SS |
3539 | { |
3540 | struct type *index_type, *element_type, *range_type; | |
3541 | int lower, upper; | |
3542 | int adjustable = 0; | |
3543 | int nbits; | |
3544 | ||
3545 | /* Format of an array type: | |
3546 | "ar<index type>;lower;upper;<array_contents_type>". | |
3547 | OS9000: "arlower,upper;<array_contents_type>". | |
3548 | ||
3549 | Fortran adjustable arrays use Adigits or Tdigits for lower or upper; | |
3550 | for these, produce a type like float[][]. */ | |
3551 | ||
c906108c SS |
3552 | { |
3553 | index_type = read_type (pp, objfile); | |
3554 | if (**pp != ';') | |
3555 | /* Improper format of array type decl. */ | |
3556 | return error_type (pp, objfile); | |
3557 | ++*pp; | |
3558 | } | |
3559 | ||
3560 | if (!(**pp >= '0' && **pp <= '9') && **pp != '-') | |
3561 | { | |
3562 | (*pp)++; | |
3563 | adjustable = 1; | |
3564 | } | |
94e10a22 | 3565 | lower = read_huge_number (pp, ';', &nbits, 0); |
cdecafbe | 3566 | |
c906108c SS |
3567 | if (nbits != 0) |
3568 | return error_type (pp, objfile); | |
3569 | ||
3570 | if (!(**pp >= '0' && **pp <= '9') && **pp != '-') | |
3571 | { | |
3572 | (*pp)++; | |
3573 | adjustable = 1; | |
3574 | } | |
94e10a22 | 3575 | upper = read_huge_number (pp, ';', &nbits, 0); |
c906108c SS |
3576 | if (nbits != 0) |
3577 | return error_type (pp, objfile); | |
c5aa993b | 3578 | |
c906108c SS |
3579 | element_type = read_type (pp, objfile); |
3580 | ||
3581 | if (adjustable) | |
3582 | { | |
3583 | lower = 0; | |
3584 | upper = -1; | |
3585 | } | |
3586 | ||
3587 | range_type = | |
cafb3438 | 3588 | create_static_range_type (NULL, index_type, lower, upper); |
c906108c SS |
3589 | type = create_array_type (type, element_type, range_type); |
3590 | ||
3591 | return type; | |
3592 | } | |
3593 | ||
3594 | ||
3595 | /* Read a definition of an enumeration type, | |
3596 | and create and return a suitable type object. | |
3597 | Also defines the symbols that represent the values of the type. */ | |
3598 | ||
3599 | static struct type * | |
a121b7c1 | 3600 | read_enum_type (const char **pp, struct type *type, |
fba45db2 | 3601 | struct objfile *objfile) |
c906108c | 3602 | { |
5e2b427d | 3603 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
a121b7c1 | 3604 | const char *p; |
c906108c | 3605 | char *name; |
52f0bd74 AC |
3606 | long n; |
3607 | struct symbol *sym; | |
c906108c SS |
3608 | int nsyms = 0; |
3609 | struct pending **symlist; | |
3610 | struct pending *osyms, *syms; | |
3611 | int o_nsyms; | |
3612 | int nbits; | |
3613 | int unsigned_enum = 1; | |
3614 | ||
3615 | #if 0 | |
3616 | /* FIXME! The stabs produced by Sun CC merrily define things that ought | |
3617 | to be file-scope, between N_FN entries, using N_LSYM. What's a mother | |
3618 | to do? For now, force all enum values to file scope. */ | |
3619 | if (within_function) | |
e148f09d | 3620 | symlist = get_local_symbols (); |
c906108c SS |
3621 | else |
3622 | #endif | |
e148f09d | 3623 | symlist = get_file_symbols (); |
c906108c SS |
3624 | osyms = *symlist; |
3625 | o_nsyms = osyms ? osyms->nsyms : 0; | |
3626 | ||
c906108c SS |
3627 | /* The aix4 compiler emits an extra field before the enum members; |
3628 | my guess is it's a type of some sort. Just ignore it. */ | |
3629 | if (**pp == '-') | |
3630 | { | |
3631 | /* Skip over the type. */ | |
3632 | while (**pp != ':') | |
c5aa993b | 3633 | (*pp)++; |
c906108c SS |
3634 | |
3635 | /* Skip over the colon. */ | |
3636 | (*pp)++; | |
3637 | } | |
3638 | ||
3639 | /* Read the value-names and their values. | |
3640 | The input syntax is NAME:VALUE,NAME:VALUE, and so on. | |
3641 | A semicolon or comma instead of a NAME means the end. */ | |
3642 | while (**pp && **pp != ';' && **pp != ',') | |
3643 | { | |
3644 | STABS_CONTINUE (pp, objfile); | |
3645 | p = *pp; | |
c5aa993b JM |
3646 | while (*p != ':') |
3647 | p++; | |
224c3ddb | 3648 | name = (char *) obstack_copy0 (&objfile->objfile_obstack, *pp, p - *pp); |
c906108c | 3649 | *pp = p + 1; |
94e10a22 | 3650 | n = read_huge_number (pp, ',', &nbits, 0); |
c906108c SS |
3651 | if (nbits != 0) |
3652 | return error_type (pp, objfile); | |
3653 | ||
e623cf5d | 3654 | sym = allocate_symbol (objfile); |
3567439c | 3655 | SYMBOL_SET_LINKAGE_NAME (sym, name); |
3c65e5b3 | 3656 | SYMBOL_SET_LANGUAGE (sym, get_current_subfile ()->language, |
f85f34ed | 3657 | &objfile->objfile_obstack); |
f1e6e072 | 3658 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
176620f1 | 3659 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
3660 | SYMBOL_VALUE (sym) = n; |
3661 | if (n < 0) | |
3662 | unsigned_enum = 0; | |
3663 | add_symbol_to_list (sym, symlist); | |
3664 | nsyms++; | |
3665 | } | |
3666 | ||
3667 | if (**pp == ';') | |
3668 | (*pp)++; /* Skip the semicolon. */ | |
3669 | ||
3670 | /* Now fill in the fields of the type-structure. */ | |
3671 | ||
5e2b427d | 3672 | TYPE_LENGTH (type) = gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT; |
621791b8 | 3673 | set_length_in_type_chain (type); |
c906108c | 3674 | TYPE_CODE (type) = TYPE_CODE_ENUM; |
876cecd0 | 3675 | TYPE_STUB (type) = 0; |
c906108c | 3676 | if (unsigned_enum) |
876cecd0 | 3677 | TYPE_UNSIGNED (type) = 1; |
c906108c SS |
3678 | TYPE_NFIELDS (type) = nsyms; |
3679 | TYPE_FIELDS (type) = (struct field *) | |
3680 | TYPE_ALLOC (type, sizeof (struct field) * nsyms); | |
3681 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nsyms); | |
3682 | ||
3683 | /* Find the symbols for the values and put them into the type. | |
3684 | The symbols can be found in the symlist that we put them on | |
3685 | to cause them to be defined. osyms contains the old value | |
3686 | of that symlist; everything up to there was defined by us. */ | |
3687 | /* Note that we preserve the order of the enum constants, so | |
3688 | that in something like "enum {FOO, LAST_THING=FOO}" we print | |
3689 | FOO, not LAST_THING. */ | |
3690 | ||
3691 | for (syms = *symlist, n = nsyms - 1; syms; syms = syms->next) | |
3692 | { | |
3693 | int last = syms == osyms ? o_nsyms : 0; | |
3694 | int j = syms->nsyms; | |
433759f7 | 3695 | |
c906108c SS |
3696 | for (; --j >= last; --n) |
3697 | { | |
3698 | struct symbol *xsym = syms->symbol[j]; | |
433759f7 | 3699 | |
c906108c | 3700 | SYMBOL_TYPE (xsym) = type; |
3567439c | 3701 | TYPE_FIELD_NAME (type, n) = SYMBOL_LINKAGE_NAME (xsym); |
14e75d8e | 3702 | SET_FIELD_ENUMVAL (TYPE_FIELD (type, n), SYMBOL_VALUE (xsym)); |
c906108c SS |
3703 | TYPE_FIELD_BITSIZE (type, n) = 0; |
3704 | } | |
3705 | if (syms == osyms) | |
3706 | break; | |
3707 | } | |
3708 | ||
3709 | return type; | |
3710 | } | |
3711 | ||
3712 | /* Sun's ACC uses a somewhat saner method for specifying the builtin | |
3713 | typedefs in every file (for int, long, etc): | |
3714 | ||
c5aa993b JM |
3715 | type = b <signed> <width> <format type>; <offset>; <nbits> |
3716 | signed = u or s. | |
3717 | optional format type = c or b for char or boolean. | |
3718 | offset = offset from high order bit to start bit of type. | |
3719 | width is # bytes in object of this type, nbits is # bits in type. | |
c906108c SS |
3720 | |
3721 | The width/offset stuff appears to be for small objects stored in | |
3722 | larger ones (e.g. `shorts' in `int' registers). We ignore it for now, | |
3723 | FIXME. */ | |
3724 | ||
3725 | static struct type * | |
a121b7c1 | 3726 | read_sun_builtin_type (const char **pp, int typenums[2], struct objfile *objfile) |
c906108c SS |
3727 | { |
3728 | int type_bits; | |
3729 | int nbits; | |
19f392bc UW |
3730 | int unsigned_type; |
3731 | int boolean_type = 0; | |
c906108c SS |
3732 | |
3733 | switch (**pp) | |
3734 | { | |
c5aa993b | 3735 | case 's': |
19f392bc | 3736 | unsigned_type = 0; |
c5aa993b JM |
3737 | break; |
3738 | case 'u': | |
19f392bc | 3739 | unsigned_type = 1; |
c5aa993b JM |
3740 | break; |
3741 | default: | |
3742 | return error_type (pp, objfile); | |
c906108c SS |
3743 | } |
3744 | (*pp)++; | |
3745 | ||
3746 | /* For some odd reason, all forms of char put a c here. This is strange | |
3747 | because no other type has this honor. We can safely ignore this because | |
3748 | we actually determine 'char'acterness by the number of bits specified in | |
3749 | the descriptor. | |
3750 | Boolean forms, e.g Fortran logical*X, put a b here. */ | |
3751 | ||
3752 | if (**pp == 'c') | |
3753 | (*pp)++; | |
3754 | else if (**pp == 'b') | |
3755 | { | |
19f392bc | 3756 | boolean_type = 1; |
c906108c SS |
3757 | (*pp)++; |
3758 | } | |
3759 | ||
3760 | /* The first number appears to be the number of bytes occupied | |
3761 | by this type, except that unsigned short is 4 instead of 2. | |
3762 | Since this information is redundant with the third number, | |
3763 | we will ignore it. */ | |
94e10a22 | 3764 | read_huge_number (pp, ';', &nbits, 0); |
c906108c SS |
3765 | if (nbits != 0) |
3766 | return error_type (pp, objfile); | |
3767 | ||
c378eb4e | 3768 | /* The second number is always 0, so ignore it too. */ |
94e10a22 | 3769 | read_huge_number (pp, ';', &nbits, 0); |
c906108c SS |
3770 | if (nbits != 0) |
3771 | return error_type (pp, objfile); | |
3772 | ||
c378eb4e | 3773 | /* The third number is the number of bits for this type. */ |
94e10a22 | 3774 | type_bits = read_huge_number (pp, 0, &nbits, 0); |
c906108c SS |
3775 | if (nbits != 0) |
3776 | return error_type (pp, objfile); | |
3777 | /* The type *should* end with a semicolon. If it are embedded | |
3778 | in a larger type the semicolon may be the only way to know where | |
3779 | the type ends. If this type is at the end of the stabstring we | |
3780 | can deal with the omitted semicolon (but we don't have to like | |
3781 | it). Don't bother to complain(), Sun's compiler omits the semicolon | |
3782 | for "void". */ | |
3783 | if (**pp == ';') | |
3784 | ++(*pp); | |
3785 | ||
3786 | if (type_bits == 0) | |
19f392bc | 3787 | { |
77b7c781 UW |
3788 | struct type *type = init_type (objfile, TYPE_CODE_VOID, |
3789 | TARGET_CHAR_BIT, NULL); | |
19f392bc UW |
3790 | if (unsigned_type) |
3791 | TYPE_UNSIGNED (type) = 1; | |
3792 | return type; | |
3793 | } | |
3794 | ||
3795 | if (boolean_type) | |
3796 | return init_boolean_type (objfile, type_bits, unsigned_type, NULL); | |
c906108c | 3797 | else |
19f392bc | 3798 | return init_integer_type (objfile, type_bits, unsigned_type, NULL); |
c906108c SS |
3799 | } |
3800 | ||
3801 | static struct type * | |
a121b7c1 PA |
3802 | read_sun_floating_type (const char **pp, int typenums[2], |
3803 | struct objfile *objfile) | |
c906108c SS |
3804 | { |
3805 | int nbits; | |
3806 | int details; | |
3807 | int nbytes; | |
f65ca430 | 3808 | struct type *rettype; |
c906108c SS |
3809 | |
3810 | /* The first number has more details about the type, for example | |
3811 | FN_COMPLEX. */ | |
94e10a22 | 3812 | details = read_huge_number (pp, ';', &nbits, 0); |
c906108c SS |
3813 | if (nbits != 0) |
3814 | return error_type (pp, objfile); | |
3815 | ||
c378eb4e | 3816 | /* The second number is the number of bytes occupied by this type. */ |
94e10a22 | 3817 | nbytes = read_huge_number (pp, ';', &nbits, 0); |
c906108c SS |
3818 | if (nbits != 0) |
3819 | return error_type (pp, objfile); | |
3820 | ||
19f392bc UW |
3821 | nbits = nbytes * TARGET_CHAR_BIT; |
3822 | ||
c906108c SS |
3823 | if (details == NF_COMPLEX || details == NF_COMPLEX16 |
3824 | || details == NF_COMPLEX32) | |
f65ca430 | 3825 | { |
9b790ce7 | 3826 | rettype = dbx_init_float_type (objfile, nbits / 2); |
19f392bc | 3827 | return init_complex_type (objfile, NULL, rettype); |
f65ca430 | 3828 | } |
c906108c | 3829 | |
9b790ce7 | 3830 | return dbx_init_float_type (objfile, nbits); |
c906108c SS |
3831 | } |
3832 | ||
3833 | /* Read a number from the string pointed to by *PP. | |
3834 | The value of *PP is advanced over the number. | |
3835 | If END is nonzero, the character that ends the | |
3836 | number must match END, or an error happens; | |
3837 | and that character is skipped if it does match. | |
3838 | If END is zero, *PP is left pointing to that character. | |
3839 | ||
94e10a22 JG |
3840 | If TWOS_COMPLEMENT_BITS is set to a strictly positive value and if |
3841 | the number is represented in an octal representation, assume that | |
3842 | it is represented in a 2's complement representation with a size of | |
3843 | TWOS_COMPLEMENT_BITS. | |
3844 | ||
c906108c SS |
3845 | If the number fits in a long, set *BITS to 0 and return the value. |
3846 | If not, set *BITS to be the number of bits in the number and return 0. | |
3847 | ||
3848 | If encounter garbage, set *BITS to -1 and return 0. */ | |
3849 | ||
c2d11a7d | 3850 | static long |
a121b7c1 PA |
3851 | read_huge_number (const char **pp, int end, int *bits, |
3852 | int twos_complement_bits) | |
c906108c | 3853 | { |
a121b7c1 | 3854 | const char *p = *pp; |
c906108c | 3855 | int sign = 1; |
51e9e0d4 | 3856 | int sign_bit = 0; |
c2d11a7d | 3857 | long n = 0; |
c906108c SS |
3858 | int radix = 10; |
3859 | char overflow = 0; | |
3860 | int nbits = 0; | |
3861 | int c; | |
c2d11a7d | 3862 | long upper_limit; |
a2699720 | 3863 | int twos_complement_representation = 0; |
c5aa993b | 3864 | |
c906108c SS |
3865 | if (*p == '-') |
3866 | { | |
3867 | sign = -1; | |
3868 | p++; | |
3869 | } | |
3870 | ||
3871 | /* Leading zero means octal. GCC uses this to output values larger | |
3872 | than an int (because that would be hard in decimal). */ | |
3873 | if (*p == '0') | |
3874 | { | |
3875 | radix = 8; | |
3876 | p++; | |
3877 | } | |
3878 | ||
a2699720 PA |
3879 | /* Skip extra zeros. */ |
3880 | while (*p == '0') | |
3881 | p++; | |
3882 | ||
3883 | if (sign > 0 && radix == 8 && twos_complement_bits > 0) | |
3884 | { | |
3885 | /* Octal, possibly signed. Check if we have enough chars for a | |
3886 | negative number. */ | |
3887 | ||
3888 | size_t len; | |
a121b7c1 | 3889 | const char *p1 = p; |
433759f7 | 3890 | |
a2699720 PA |
3891 | while ((c = *p1) >= '0' && c < '8') |
3892 | p1++; | |
3893 | ||
3894 | len = p1 - p; | |
3895 | if (len > twos_complement_bits / 3 | |
3e43a32a MS |
3896 | || (twos_complement_bits % 3 == 0 |
3897 | && len == twos_complement_bits / 3)) | |
a2699720 PA |
3898 | { |
3899 | /* Ok, we have enough characters for a signed value, check | |
3900 | for signness by testing if the sign bit is set. */ | |
3901 | sign_bit = (twos_complement_bits % 3 + 2) % 3; | |
3902 | c = *p - '0'; | |
3903 | if (c & (1 << sign_bit)) | |
3904 | { | |
3905 | /* Definitely signed. */ | |
3906 | twos_complement_representation = 1; | |
3907 | sign = -1; | |
3908 | } | |
3909 | } | |
3910 | } | |
3911 | ||
1b831c93 | 3912 | upper_limit = LONG_MAX / radix; |
c906108c SS |
3913 | |
3914 | while ((c = *p++) >= '0' && c < ('0' + radix)) | |
3915 | { | |
3916 | if (n <= upper_limit) | |
94e10a22 JG |
3917 | { |
3918 | if (twos_complement_representation) | |
3919 | { | |
a2699720 PA |
3920 | /* Octal, signed, twos complement representation. In |
3921 | this case, n is the corresponding absolute value. */ | |
3922 | if (n == 0) | |
3923 | { | |
3924 | long sn = c - '0' - ((2 * (c - '0')) | (2 << sign_bit)); | |
433759f7 | 3925 | |
a2699720 PA |
3926 | n = -sn; |
3927 | } | |
94e10a22 JG |
3928 | else |
3929 | { | |
a2699720 PA |
3930 | n *= radix; |
3931 | n -= c - '0'; | |
94e10a22 | 3932 | } |
94e10a22 JG |
3933 | } |
3934 | else | |
3935 | { | |
3936 | /* unsigned representation */ | |
3937 | n *= radix; | |
c378eb4e | 3938 | n += c - '0'; /* FIXME this overflows anyway. */ |
94e10a22 JG |
3939 | } |
3940 | } | |
c906108c | 3941 | else |
94e10a22 | 3942 | overflow = 1; |
c5aa993b | 3943 | |
c906108c | 3944 | /* This depends on large values being output in octal, which is |
c378eb4e | 3945 | what GCC does. */ |
c906108c SS |
3946 | if (radix == 8) |
3947 | { | |
3948 | if (nbits == 0) | |
3949 | { | |
3950 | if (c == '0') | |
3951 | /* Ignore leading zeroes. */ | |
3952 | ; | |
3953 | else if (c == '1') | |
3954 | nbits = 1; | |
3955 | else if (c == '2' || c == '3') | |
3956 | nbits = 2; | |
3957 | else | |
3958 | nbits = 3; | |
3959 | } | |
3960 | else | |
3961 | nbits += 3; | |
3962 | } | |
3963 | } | |
3964 | if (end) | |
3965 | { | |
3966 | if (c && c != end) | |
3967 | { | |
3968 | if (bits != NULL) | |
3969 | *bits = -1; | |
3970 | return 0; | |
3971 | } | |
3972 | } | |
3973 | else | |
3974 | --p; | |
3975 | ||
a2699720 PA |
3976 | if (radix == 8 && twos_complement_bits > 0 && nbits > twos_complement_bits) |
3977 | { | |
3978 | /* We were supposed to parse a number with maximum | |
3979 | TWOS_COMPLEMENT_BITS bits, but something went wrong. */ | |
3980 | if (bits != NULL) | |
3981 | *bits = -1; | |
3982 | return 0; | |
3983 | } | |
3984 | ||
c906108c SS |
3985 | *pp = p; |
3986 | if (overflow) | |
3987 | { | |
3988 | if (nbits == 0) | |
3989 | { | |
3990 | /* Large decimal constants are an error (because it is hard to | |
3991 | count how many bits are in them). */ | |
3992 | if (bits != NULL) | |
3993 | *bits = -1; | |
3994 | return 0; | |
3995 | } | |
c5aa993b | 3996 | |
c906108c | 3997 | /* -0x7f is the same as 0x80. So deal with it by adding one to |
a2699720 PA |
3998 | the number of bits. Two's complement represention octals |
3999 | can't have a '-' in front. */ | |
4000 | if (sign == -1 && !twos_complement_representation) | |
c906108c SS |
4001 | ++nbits; |
4002 | if (bits) | |
4003 | *bits = nbits; | |
4004 | } | |
4005 | else | |
4006 | { | |
4007 | if (bits) | |
4008 | *bits = 0; | |
a2699720 | 4009 | return n * sign; |
c906108c SS |
4010 | } |
4011 | /* It's *BITS which has the interesting information. */ | |
4012 | return 0; | |
4013 | } | |
4014 | ||
4015 | static struct type * | |
a121b7c1 | 4016 | read_range_type (const char **pp, int typenums[2], int type_size, |
94e10a22 | 4017 | struct objfile *objfile) |
c906108c | 4018 | { |
5e2b427d | 4019 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
a121b7c1 | 4020 | const char *orig_pp = *pp; |
c906108c | 4021 | int rangenums[2]; |
c2d11a7d | 4022 | long n2, n3; |
c906108c SS |
4023 | int n2bits, n3bits; |
4024 | int self_subrange; | |
4025 | struct type *result_type; | |
4026 | struct type *index_type = NULL; | |
4027 | ||
4028 | /* First comes a type we are a subrange of. | |
4029 | In C it is usually 0, 1 or the type being defined. */ | |
4030 | if (read_type_number (pp, rangenums) != 0) | |
4031 | return error_type (pp, objfile); | |
4032 | self_subrange = (rangenums[0] == typenums[0] && | |
4033 | rangenums[1] == typenums[1]); | |
4034 | ||
4035 | if (**pp == '=') | |
4036 | { | |
4037 | *pp = orig_pp; | |
4038 | index_type = read_type (pp, objfile); | |
4039 | } | |
4040 | ||
4041 | /* A semicolon should now follow; skip it. */ | |
4042 | if (**pp == ';') | |
4043 | (*pp)++; | |
4044 | ||
4045 | /* The remaining two operands are usually lower and upper bounds | |
4046 | of the range. But in some special cases they mean something else. */ | |
94e10a22 JG |
4047 | n2 = read_huge_number (pp, ';', &n2bits, type_size); |
4048 | n3 = read_huge_number (pp, ';', &n3bits, type_size); | |
c906108c SS |
4049 | |
4050 | if (n2bits == -1 || n3bits == -1) | |
4051 | return error_type (pp, objfile); | |
4052 | ||
4053 | if (index_type) | |
4054 | goto handle_true_range; | |
4055 | ||
4056 | /* If limits are huge, must be large integral type. */ | |
4057 | if (n2bits != 0 || n3bits != 0) | |
4058 | { | |
4059 | char got_signed = 0; | |
4060 | char got_unsigned = 0; | |
4061 | /* Number of bits in the type. */ | |
4062 | int nbits = 0; | |
4063 | ||
94e10a22 | 4064 | /* If a type size attribute has been specified, the bounds of |
c378eb4e | 4065 | the range should fit in this size. If the lower bounds needs |
94e10a22 JG |
4066 | more bits than the upper bound, then the type is signed. */ |
4067 | if (n2bits <= type_size && n3bits <= type_size) | |
4068 | { | |
4069 | if (n2bits == type_size && n2bits > n3bits) | |
4070 | got_signed = 1; | |
4071 | else | |
4072 | got_unsigned = 1; | |
4073 | nbits = type_size; | |
4074 | } | |
c906108c | 4075 | /* Range from 0 to <large number> is an unsigned large integral type. */ |
94e10a22 | 4076 | else if ((n2bits == 0 && n2 == 0) && n3bits != 0) |
c906108c SS |
4077 | { |
4078 | got_unsigned = 1; | |
4079 | nbits = n3bits; | |
4080 | } | |
4081 | /* Range from <large number> to <large number>-1 is a large signed | |
c5aa993b JM |
4082 | integral type. Take care of the case where <large number> doesn't |
4083 | fit in a long but <large number>-1 does. */ | |
c906108c SS |
4084 | else if ((n2bits != 0 && n3bits != 0 && n2bits == n3bits + 1) |
4085 | || (n2bits != 0 && n3bits == 0 | |
c2d11a7d JM |
4086 | && (n2bits == sizeof (long) * HOST_CHAR_BIT) |
4087 | && n3 == LONG_MAX)) | |
c906108c SS |
4088 | { |
4089 | got_signed = 1; | |
4090 | nbits = n2bits; | |
4091 | } | |
4092 | ||
4093 | if (got_signed || got_unsigned) | |
19f392bc | 4094 | return init_integer_type (objfile, nbits, got_unsigned, NULL); |
c906108c SS |
4095 | else |
4096 | return error_type (pp, objfile); | |
4097 | } | |
4098 | ||
4099 | /* A type defined as a subrange of itself, with bounds both 0, is void. */ | |
4100 | if (self_subrange && n2 == 0 && n3 == 0) | |
77b7c781 | 4101 | return init_type (objfile, TYPE_CODE_VOID, TARGET_CHAR_BIT, NULL); |
c906108c SS |
4102 | |
4103 | /* If n3 is zero and n2 is positive, we want a floating type, and n2 | |
4104 | is the width in bytes. | |
4105 | ||
4106 | Fortran programs appear to use this for complex types also. To | |
4107 | distinguish between floats and complex, g77 (and others?) seem | |
4108 | to use self-subranges for the complexes, and subranges of int for | |
4109 | the floats. | |
4110 | ||
4111 | Also note that for complexes, g77 sets n2 to the size of one of | |
4112 | the member floats, not the whole complex beast. My guess is that | |
c378eb4e | 4113 | this was to work well with pre-COMPLEX versions of gdb. */ |
c906108c SS |
4114 | |
4115 | if (n3 == 0 && n2 > 0) | |
4116 | { | |
1300f5dd | 4117 | struct type *float_type |
9b790ce7 | 4118 | = dbx_init_float_type (objfile, n2 * TARGET_CHAR_BIT); |
1300f5dd | 4119 | |
c906108c | 4120 | if (self_subrange) |
19f392bc | 4121 | return init_complex_type (objfile, NULL, float_type); |
c906108c | 4122 | else |
1300f5dd | 4123 | return float_type; |
c906108c SS |
4124 | } |
4125 | ||
a2699720 | 4126 | /* If the upper bound is -1, it must really be an unsigned integral. */ |
c906108c SS |
4127 | |
4128 | else if (n2 == 0 && n3 == -1) | |
4129 | { | |
a2699720 | 4130 | int bits = type_size; |
433759f7 | 4131 | |
a2699720 PA |
4132 | if (bits <= 0) |
4133 | { | |
4134 | /* We don't know its size. It is unsigned int or unsigned | |
4135 | long. GCC 2.3.3 uses this for long long too, but that is | |
4136 | just a GDB 3.5 compatibility hack. */ | |
5e2b427d | 4137 | bits = gdbarch_int_bit (gdbarch); |
a2699720 PA |
4138 | } |
4139 | ||
19f392bc | 4140 | return init_integer_type (objfile, bits, 1, NULL); |
c906108c SS |
4141 | } |
4142 | ||
4143 | /* Special case: char is defined (Who knows why) as a subrange of | |
4144 | itself with range 0-127. */ | |
4145 | else if (self_subrange && n2 == 0 && n3 == 127) | |
19f392bc | 4146 | { |
77b7c781 UW |
4147 | struct type *type = init_integer_type (objfile, TARGET_CHAR_BIT, |
4148 | 0, NULL); | |
19f392bc UW |
4149 | TYPE_NOSIGN (type) = 1; |
4150 | return type; | |
4151 | } | |
c906108c SS |
4152 | /* We used to do this only for subrange of self or subrange of int. */ |
4153 | else if (n2 == 0) | |
4154 | { | |
a0b3c4fd JM |
4155 | /* -1 is used for the upper bound of (4 byte) "unsigned int" and |
4156 | "unsigned long", and we already checked for that, | |
4157 | so don't need to test for it here. */ | |
4158 | ||
c906108c SS |
4159 | if (n3 < 0) |
4160 | /* n3 actually gives the size. */ | |
19f392bc | 4161 | return init_integer_type (objfile, -n3 * TARGET_CHAR_BIT, 1, NULL); |
c906108c | 4162 | |
7be570e7 | 4163 | /* Is n3 == 2**(8n)-1 for some integer n? Then it's an |
a0b3c4fd JM |
4164 | unsigned n-byte integer. But do require n to be a power of |
4165 | two; we don't want 3- and 5-byte integers flying around. */ | |
4166 | { | |
4167 | int bytes; | |
4168 | unsigned long bits; | |
4169 | ||
4170 | bits = n3; | |
4171 | for (bytes = 0; (bits & 0xff) == 0xff; bytes++) | |
4172 | bits >>= 8; | |
4173 | if (bits == 0 | |
4174 | && ((bytes - 1) & bytes) == 0) /* "bytes is a power of two" */ | |
19f392bc | 4175 | return init_integer_type (objfile, bytes * TARGET_CHAR_BIT, 1, NULL); |
a0b3c4fd | 4176 | } |
c906108c SS |
4177 | } |
4178 | /* I think this is for Convex "long long". Since I don't know whether | |
4179 | Convex sets self_subrange, I also accept that particular size regardless | |
4180 | of self_subrange. */ | |
4181 | else if (n3 == 0 && n2 < 0 | |
4182 | && (self_subrange | |
9a76efb6 | 4183 | || n2 == -gdbarch_long_long_bit |
5e2b427d | 4184 | (gdbarch) / TARGET_CHAR_BIT)) |
19f392bc | 4185 | return init_integer_type (objfile, -n2 * TARGET_CHAR_BIT, 0, NULL); |
c5aa993b | 4186 | else if (n2 == -n3 - 1) |
c906108c SS |
4187 | { |
4188 | if (n3 == 0x7f) | |
19f392bc | 4189 | return init_integer_type (objfile, 8, 0, NULL); |
c906108c | 4190 | if (n3 == 0x7fff) |
19f392bc | 4191 | return init_integer_type (objfile, 16, 0, NULL); |
c906108c | 4192 | if (n3 == 0x7fffffff) |
19f392bc | 4193 | return init_integer_type (objfile, 32, 0, NULL); |
c906108c SS |
4194 | } |
4195 | ||
4196 | /* We have a real range type on our hands. Allocate space and | |
4197 | return a real pointer. */ | |
c5aa993b | 4198 | handle_true_range: |
c906108c SS |
4199 | |
4200 | if (self_subrange) | |
46bf5051 | 4201 | index_type = objfile_type (objfile)->builtin_int; |
c906108c | 4202 | else |
46bf5051 | 4203 | index_type = *dbx_lookup_type (rangenums, objfile); |
c906108c SS |
4204 | if (index_type == NULL) |
4205 | { | |
4206 | /* Does this actually ever happen? Is that why we are worrying | |
4207 | about dealing with it rather than just calling error_type? */ | |
4208 | ||
b98664d3 | 4209 | complaint (_("base type %d of range type is not defined"), rangenums[1]); |
5e2b427d | 4210 | |
46bf5051 | 4211 | index_type = objfile_type (objfile)->builtin_int; |
c906108c SS |
4212 | } |
4213 | ||
0c9c3474 | 4214 | result_type |
cafb3438 | 4215 | = create_static_range_type (NULL, index_type, n2, n3); |
c906108c SS |
4216 | return (result_type); |
4217 | } | |
4218 | ||
4219 | /* Read in an argument list. This is a list of types, separated by commas | |
0a029df5 DJ |
4220 | and terminated with END. Return the list of types read in, or NULL |
4221 | if there is an error. */ | |
c906108c | 4222 | |
ad2f7632 | 4223 | static struct field * |
a121b7c1 | 4224 | read_args (const char **pp, int end, struct objfile *objfile, int *nargsp, |
ad2f7632 | 4225 | int *varargsp) |
c906108c SS |
4226 | { |
4227 | /* FIXME! Remove this arbitrary limit! */ | |
c378eb4e | 4228 | struct type *types[1024]; /* Allow for fns of 1023 parameters. */ |
ad2f7632 DJ |
4229 | int n = 0, i; |
4230 | struct field *rval; | |
c906108c SS |
4231 | |
4232 | while (**pp != end) | |
4233 | { | |
4234 | if (**pp != ',') | |
4235 | /* Invalid argument list: no ','. */ | |
0a029df5 | 4236 | return NULL; |
c906108c SS |
4237 | (*pp)++; |
4238 | STABS_CONTINUE (pp, objfile); | |
4239 | types[n++] = read_type (pp, objfile); | |
4240 | } | |
c378eb4e | 4241 | (*pp)++; /* get past `end' (the ':' character). */ |
c906108c | 4242 | |
d24d8548 JK |
4243 | if (n == 0) |
4244 | { | |
4245 | /* We should read at least the THIS parameter here. Some broken stabs | |
4246 | output contained `(0,41),(0,42)=@s8;-16;,(0,43),(0,1);' where should | |
4247 | have been present ";-16,(0,43)" reference instead. This way the | |
4248 | excessive ";" marker prematurely stops the parameters parsing. */ | |
4249 | ||
b98664d3 | 4250 | complaint (_("Invalid (empty) method arguments")); |
d24d8548 JK |
4251 | *varargsp = 0; |
4252 | } | |
4253 | else if (TYPE_CODE (types[n - 1]) != TYPE_CODE_VOID) | |
ad2f7632 | 4254 | *varargsp = 1; |
c906108c SS |
4255 | else |
4256 | { | |
ad2f7632 DJ |
4257 | n--; |
4258 | *varargsp = 0; | |
c906108c | 4259 | } |
ad2f7632 | 4260 | |
8d749320 | 4261 | rval = XCNEWVEC (struct field, n); |
ad2f7632 DJ |
4262 | for (i = 0; i < n; i++) |
4263 | rval[i].type = types[i]; | |
4264 | *nargsp = n; | |
c906108c SS |
4265 | return rval; |
4266 | } | |
4267 | \f | |
4268 | /* Common block handling. */ | |
4269 | ||
4270 | /* List of symbols declared since the last BCOMM. This list is a tail | |
4271 | of local_symbols. When ECOMM is seen, the symbols on the list | |
4272 | are noted so their proper addresses can be filled in later, | |
4273 | using the common block base address gotten from the assembler | |
4274 | stabs. */ | |
4275 | ||
4276 | static struct pending *common_block; | |
4277 | static int common_block_i; | |
4278 | ||
4279 | /* Name of the current common block. We get it from the BCOMM instead of the | |
4280 | ECOMM to match IBM documentation (even though IBM puts the name both places | |
4281 | like everyone else). */ | |
4282 | static char *common_block_name; | |
4283 | ||
4284 | /* Process a N_BCOMM symbol. The storage for NAME is not guaranteed | |
4285 | to remain after this function returns. */ | |
4286 | ||
4287 | void | |
a121b7c1 | 4288 | common_block_start (const char *name, struct objfile *objfile) |
c906108c SS |
4289 | { |
4290 | if (common_block_name != NULL) | |
4291 | { | |
b98664d3 | 4292 | complaint (_("Invalid symbol data: common block within common block")); |
c906108c | 4293 | } |
e148f09d TT |
4294 | common_block = *get_local_symbols (); |
4295 | common_block_i = common_block ? common_block->nsyms : 0; | |
224c3ddb SM |
4296 | common_block_name = (char *) obstack_copy0 (&objfile->objfile_obstack, name, |
4297 | strlen (name)); | |
c906108c SS |
4298 | } |
4299 | ||
4300 | /* Process a N_ECOMM symbol. */ | |
4301 | ||
4302 | void | |
fba45db2 | 4303 | common_block_end (struct objfile *objfile) |
c906108c SS |
4304 | { |
4305 | /* Symbols declared since the BCOMM are to have the common block | |
4306 | start address added in when we know it. common_block and | |
4307 | common_block_i point to the first symbol after the BCOMM in | |
4308 | the local_symbols list; copy the list and hang it off the | |
4309 | symbol for the common block name for later fixup. */ | |
4310 | int i; | |
4311 | struct symbol *sym; | |
fe978cb0 | 4312 | struct pending *newobj = 0; |
c906108c SS |
4313 | struct pending *next; |
4314 | int j; | |
4315 | ||
4316 | if (common_block_name == NULL) | |
4317 | { | |
b98664d3 | 4318 | complaint (_("ECOMM symbol unmatched by BCOMM")); |
c906108c SS |
4319 | return; |
4320 | } | |
4321 | ||
e623cf5d | 4322 | sym = allocate_symbol (objfile); |
c378eb4e | 4323 | /* Note: common_block_name already saved on objfile_obstack. */ |
3567439c | 4324 | SYMBOL_SET_LINKAGE_NAME (sym, common_block_name); |
f1e6e072 | 4325 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
c906108c SS |
4326 | |
4327 | /* Now we copy all the symbols which have been defined since the BCOMM. */ | |
4328 | ||
4329 | /* Copy all the struct pendings before common_block. */ | |
e148f09d | 4330 | for (next = *get_local_symbols (); |
c906108c SS |
4331 | next != NULL && next != common_block; |
4332 | next = next->next) | |
4333 | { | |
4334 | for (j = 0; j < next->nsyms; j++) | |
fe978cb0 | 4335 | add_symbol_to_list (next->symbol[j], &newobj); |
c906108c SS |
4336 | } |
4337 | ||
4338 | /* Copy however much of COMMON_BLOCK we need. If COMMON_BLOCK is | |
4339 | NULL, it means copy all the local symbols (which we already did | |
4340 | above). */ | |
4341 | ||
4342 | if (common_block != NULL) | |
4343 | for (j = common_block_i; j < common_block->nsyms; j++) | |
fe978cb0 | 4344 | add_symbol_to_list (common_block->symbol[j], &newobj); |
c906108c | 4345 | |
fe978cb0 | 4346 | SYMBOL_TYPE (sym) = (struct type *) newobj; |
c906108c SS |
4347 | |
4348 | /* Should we be putting local_symbols back to what it was? | |
4349 | Does it matter? */ | |
4350 | ||
3567439c | 4351 | i = hashname (SYMBOL_LINKAGE_NAME (sym)); |
c906108c SS |
4352 | SYMBOL_VALUE_CHAIN (sym) = global_sym_chain[i]; |
4353 | global_sym_chain[i] = sym; | |
4354 | common_block_name = NULL; | |
4355 | } | |
4356 | ||
4357 | /* Add a common block's start address to the offset of each symbol | |
4358 | declared to be in it (by being between a BCOMM/ECOMM pair that uses | |
4359 | the common block name). */ | |
4360 | ||
4361 | static void | |
46cb6474 | 4362 | fix_common_block (struct symbol *sym, CORE_ADDR valu) |
c906108c SS |
4363 | { |
4364 | struct pending *next = (struct pending *) SYMBOL_TYPE (sym); | |
433759f7 | 4365 | |
c5aa993b | 4366 | for (; next; next = next->next) |
c906108c | 4367 | { |
aa1ee363 | 4368 | int j; |
433759f7 | 4369 | |
c906108c SS |
4370 | for (j = next->nsyms - 1; j >= 0; j--) |
4371 | SYMBOL_VALUE_ADDRESS (next->symbol[j]) += valu; | |
4372 | } | |
4373 | } | |
c5aa993b | 4374 | \f |
c906108c SS |
4375 | |
4376 | ||
bf362611 JB |
4377 | /* Add {TYPE, TYPENUMS} to the NONAME_UNDEFS vector. |
4378 | See add_undefined_type for more details. */ | |
c906108c | 4379 | |
a7a48797 | 4380 | static void |
bf362611 JB |
4381 | add_undefined_type_noname (struct type *type, int typenums[2]) |
4382 | { | |
4383 | struct nat nat; | |
4384 | ||
4385 | nat.typenums[0] = typenums [0]; | |
4386 | nat.typenums[1] = typenums [1]; | |
4387 | nat.type = type; | |
4388 | ||
4389 | if (noname_undefs_length == noname_undefs_allocated) | |
4390 | { | |
4391 | noname_undefs_allocated *= 2; | |
4392 | noname_undefs = (struct nat *) | |
4393 | xrealloc ((char *) noname_undefs, | |
4394 | noname_undefs_allocated * sizeof (struct nat)); | |
4395 | } | |
4396 | noname_undefs[noname_undefs_length++] = nat; | |
4397 | } | |
4398 | ||
4399 | /* Add TYPE to the UNDEF_TYPES vector. | |
4400 | See add_undefined_type for more details. */ | |
4401 | ||
4402 | static void | |
4403 | add_undefined_type_1 (struct type *type) | |
c906108c SS |
4404 | { |
4405 | if (undef_types_length == undef_types_allocated) | |
4406 | { | |
4407 | undef_types_allocated *= 2; | |
4408 | undef_types = (struct type **) | |
4409 | xrealloc ((char *) undef_types, | |
4410 | undef_types_allocated * sizeof (struct type *)); | |
4411 | } | |
4412 | undef_types[undef_types_length++] = type; | |
4413 | } | |
4414 | ||
bf362611 JB |
4415 | /* What about types defined as forward references inside of a small lexical |
4416 | scope? */ | |
4417 | /* Add a type to the list of undefined types to be checked through | |
4418 | once this file has been read in. | |
4419 | ||
4420 | In practice, we actually maintain two such lists: The first list | |
4421 | (UNDEF_TYPES) is used for types whose name has been provided, and | |
4422 | concerns forward references (eg 'xs' or 'xu' forward references); | |
4423 | the second list (NONAME_UNDEFS) is used for types whose name is | |
4424 | unknown at creation time, because they were referenced through | |
4425 | their type number before the actual type was declared. | |
4426 | This function actually adds the given type to the proper list. */ | |
4427 | ||
4428 | static void | |
4429 | add_undefined_type (struct type *type, int typenums[2]) | |
4430 | { | |
e86ca25f | 4431 | if (TYPE_NAME (type) == NULL) |
bf362611 JB |
4432 | add_undefined_type_noname (type, typenums); |
4433 | else | |
4434 | add_undefined_type_1 (type); | |
4435 | } | |
4436 | ||
4437 | /* Try to fix all undefined types pushed on the UNDEF_TYPES vector. */ | |
4438 | ||
2c0b251b | 4439 | static void |
46bf5051 | 4440 | cleanup_undefined_types_noname (struct objfile *objfile) |
bf362611 JB |
4441 | { |
4442 | int i; | |
4443 | ||
4444 | for (i = 0; i < noname_undefs_length; i++) | |
4445 | { | |
4446 | struct nat nat = noname_undefs[i]; | |
4447 | struct type **type; | |
4448 | ||
46bf5051 | 4449 | type = dbx_lookup_type (nat.typenums, objfile); |
bf362611 | 4450 | if (nat.type != *type && TYPE_CODE (*type) != TYPE_CODE_UNDEF) |
56953f80 JB |
4451 | { |
4452 | /* The instance flags of the undefined type are still unset, | |
4453 | and needs to be copied over from the reference type. | |
4454 | Since replace_type expects them to be identical, we need | |
4455 | to set these flags manually before hand. */ | |
4456 | TYPE_INSTANCE_FLAGS (nat.type) = TYPE_INSTANCE_FLAGS (*type); | |
4457 | replace_type (nat.type, *type); | |
4458 | } | |
bf362611 JB |
4459 | } |
4460 | ||
4461 | noname_undefs_length = 0; | |
4462 | } | |
4463 | ||
c906108c SS |
4464 | /* Go through each undefined type, see if it's still undefined, and fix it |
4465 | up if possible. We have two kinds of undefined types: | |
4466 | ||
4467 | TYPE_CODE_ARRAY: Array whose target type wasn't defined yet. | |
c5aa993b JM |
4468 | Fix: update array length using the element bounds |
4469 | and the target type's length. | |
c906108c | 4470 | TYPE_CODE_STRUCT, TYPE_CODE_UNION: Structure whose fields were not |
c5aa993b JM |
4471 | yet defined at the time a pointer to it was made. |
4472 | Fix: Do a full lookup on the struct/union tag. */ | |
bf362611 | 4473 | |
2c0b251b | 4474 | static void |
bf362611 | 4475 | cleanup_undefined_types_1 (void) |
c906108c SS |
4476 | { |
4477 | struct type **type; | |
4478 | ||
9e386756 JB |
4479 | /* Iterate over every undefined type, and look for a symbol whose type |
4480 | matches our undefined type. The symbol matches if: | |
4481 | 1. It is a typedef in the STRUCT domain; | |
4482 | 2. It has the same name, and same type code; | |
4483 | 3. The instance flags are identical. | |
4484 | ||
4485 | It is important to check the instance flags, because we have seen | |
4486 | examples where the debug info contained definitions such as: | |
4487 | ||
4488 | "foo_t:t30=B31=xefoo_t:" | |
4489 | ||
4490 | In this case, we have created an undefined type named "foo_t" whose | |
4491 | instance flags is null (when processing "xefoo_t"), and then created | |
4492 | another type with the same name, but with different instance flags | |
4493 | ('B' means volatile). I think that the definition above is wrong, | |
4494 | since the same type cannot be volatile and non-volatile at the same | |
4495 | time, but we need to be able to cope with it when it happens. The | |
4496 | approach taken here is to treat these two types as different. */ | |
4497 | ||
c906108c SS |
4498 | for (type = undef_types; type < undef_types + undef_types_length; type++) |
4499 | { | |
4500 | switch (TYPE_CODE (*type)) | |
4501 | { | |
4502 | ||
c5aa993b JM |
4503 | case TYPE_CODE_STRUCT: |
4504 | case TYPE_CODE_UNION: | |
4505 | case TYPE_CODE_ENUM: | |
c906108c SS |
4506 | { |
4507 | /* Check if it has been defined since. Need to do this here | |
4508 | as well as in check_typedef to deal with the (legitimate in | |
4509 | C though not C++) case of several types with the same name | |
4510 | in different source files. */ | |
74a9bb82 | 4511 | if (TYPE_STUB (*type)) |
c906108c SS |
4512 | { |
4513 | struct pending *ppt; | |
4514 | int i; | |
c378eb4e | 4515 | /* Name of the type, without "struct" or "union". */ |
e86ca25f | 4516 | const char *type_name = TYPE_NAME (*type); |
c906108c | 4517 | |
fe978cb0 | 4518 | if (type_name == NULL) |
c906108c | 4519 | { |
b98664d3 | 4520 | complaint (_("need a type name")); |
c906108c SS |
4521 | break; |
4522 | } | |
e148f09d | 4523 | for (ppt = *get_file_symbols (); ppt; ppt = ppt->next) |
c906108c SS |
4524 | { |
4525 | for (i = 0; i < ppt->nsyms; i++) | |
4526 | { | |
4527 | struct symbol *sym = ppt->symbol[i]; | |
c5aa993b | 4528 | |
c906108c | 4529 | if (SYMBOL_CLASS (sym) == LOC_TYPEDEF |
176620f1 | 4530 | && SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN |
c906108c SS |
4531 | && (TYPE_CODE (SYMBOL_TYPE (sym)) == |
4532 | TYPE_CODE (*type)) | |
9e386756 JB |
4533 | && (TYPE_INSTANCE_FLAGS (*type) == |
4534 | TYPE_INSTANCE_FLAGS (SYMBOL_TYPE (sym))) | |
3567439c | 4535 | && strcmp (SYMBOL_LINKAGE_NAME (sym), |
fe978cb0 | 4536 | type_name) == 0) |
13a393b0 | 4537 | replace_type (*type, SYMBOL_TYPE (sym)); |
c906108c SS |
4538 | } |
4539 | } | |
4540 | } | |
4541 | } | |
4542 | break; | |
4543 | ||
4544 | default: | |
4545 | { | |
b98664d3 | 4546 | complaint (_("forward-referenced types left unresolved, " |
e2e0b3e5 | 4547 | "type code %d."), |
23136709 | 4548 | TYPE_CODE (*type)); |
c906108c SS |
4549 | } |
4550 | break; | |
4551 | } | |
4552 | } | |
4553 | ||
4554 | undef_types_length = 0; | |
4555 | } | |
4556 | ||
bf362611 JB |
4557 | /* Try to fix all the undefined types we ecountered while processing |
4558 | this unit. */ | |
4559 | ||
4560 | void | |
0a0edcd5 | 4561 | cleanup_undefined_stabs_types (struct objfile *objfile) |
bf362611 JB |
4562 | { |
4563 | cleanup_undefined_types_1 (); | |
46bf5051 | 4564 | cleanup_undefined_types_noname (objfile); |
bf362611 JB |
4565 | } |
4566 | ||
77d6f1aa | 4567 | /* See stabsread.h. */ |
c906108c SS |
4568 | |
4569 | void | |
fba45db2 | 4570 | scan_file_globals (struct objfile *objfile) |
c906108c SS |
4571 | { |
4572 | int hash; | |
507836c0 | 4573 | struct symbol *sym, *prev; |
c906108c SS |
4574 | struct objfile *resolve_objfile; |
4575 | ||
4576 | /* SVR4 based linkers copy referenced global symbols from shared | |
4577 | libraries to the main executable. | |
4578 | If we are scanning the symbols for a shared library, try to resolve | |
4579 | them from the minimal symbols of the main executable first. */ | |
4580 | ||
4581 | if (symfile_objfile && objfile != symfile_objfile) | |
4582 | resolve_objfile = symfile_objfile; | |
4583 | else | |
4584 | resolve_objfile = objfile; | |
4585 | ||
4586 | while (1) | |
4587 | { | |
4588 | /* Avoid expensive loop through all minimal symbols if there are | |
c5aa993b | 4589 | no unresolved symbols. */ |
c906108c SS |
4590 | for (hash = 0; hash < HASHSIZE; hash++) |
4591 | { | |
4592 | if (global_sym_chain[hash]) | |
4593 | break; | |
4594 | } | |
4595 | if (hash >= HASHSIZE) | |
4596 | return; | |
4597 | ||
7932255d | 4598 | for (minimal_symbol *msymbol : resolve_objfile->msymbols ()) |
c906108c SS |
4599 | { |
4600 | QUIT; | |
4601 | ||
4602 | /* Skip static symbols. */ | |
4603 | switch (MSYMBOL_TYPE (msymbol)) | |
4604 | { | |
4605 | case mst_file_text: | |
4606 | case mst_file_data: | |
4607 | case mst_file_bss: | |
4608 | continue; | |
4609 | default: | |
4610 | break; | |
4611 | } | |
4612 | ||
4613 | prev = NULL; | |
4614 | ||
4615 | /* Get the hash index and check all the symbols | |
c378eb4e | 4616 | under that hash index. */ |
c906108c | 4617 | |
efd66ac6 | 4618 | hash = hashname (MSYMBOL_LINKAGE_NAME (msymbol)); |
c906108c SS |
4619 | |
4620 | for (sym = global_sym_chain[hash]; sym;) | |
4621 | { | |
efd66ac6 | 4622 | if (strcmp (MSYMBOL_LINKAGE_NAME (msymbol), |
3567439c | 4623 | SYMBOL_LINKAGE_NAME (sym)) == 0) |
c906108c | 4624 | { |
c906108c | 4625 | /* Splice this symbol out of the hash chain and |
c378eb4e | 4626 | assign the value we have to it. */ |
c906108c SS |
4627 | if (prev) |
4628 | { | |
4629 | SYMBOL_VALUE_CHAIN (prev) = SYMBOL_VALUE_CHAIN (sym); | |
4630 | } | |
4631 | else | |
4632 | { | |
4633 | global_sym_chain[hash] = SYMBOL_VALUE_CHAIN (sym); | |
4634 | } | |
c5aa993b | 4635 | |
c906108c SS |
4636 | /* Check to see whether we need to fix up a common block. */ |
4637 | /* Note: this code might be executed several times for | |
4638 | the same symbol if there are multiple references. */ | |
507836c0 | 4639 | if (sym) |
c906108c | 4640 | { |
507836c0 | 4641 | if (SYMBOL_CLASS (sym) == LOC_BLOCK) |
c906108c | 4642 | { |
507836c0 | 4643 | fix_common_block (sym, |
77e371c0 TT |
4644 | MSYMBOL_VALUE_ADDRESS (resolve_objfile, |
4645 | msymbol)); | |
c906108c SS |
4646 | } |
4647 | else | |
4648 | { | |
507836c0 | 4649 | SYMBOL_VALUE_ADDRESS (sym) |
77e371c0 | 4650 | = MSYMBOL_VALUE_ADDRESS (resolve_objfile, msymbol); |
c906108c | 4651 | } |
efd66ac6 | 4652 | SYMBOL_SECTION (sym) = MSYMBOL_SECTION (msymbol); |
c906108c SS |
4653 | } |
4654 | ||
c906108c SS |
4655 | if (prev) |
4656 | { | |
4657 | sym = SYMBOL_VALUE_CHAIN (prev); | |
4658 | } | |
4659 | else | |
4660 | { | |
4661 | sym = global_sym_chain[hash]; | |
4662 | } | |
4663 | } | |
4664 | else | |
4665 | { | |
4666 | prev = sym; | |
4667 | sym = SYMBOL_VALUE_CHAIN (sym); | |
4668 | } | |
4669 | } | |
4670 | } | |
4671 | if (resolve_objfile == objfile) | |
4672 | break; | |
4673 | resolve_objfile = objfile; | |
4674 | } | |
4675 | ||
4676 | /* Change the storage class of any remaining unresolved globals to | |
4677 | LOC_UNRESOLVED and remove them from the chain. */ | |
4678 | for (hash = 0; hash < HASHSIZE; hash++) | |
4679 | { | |
4680 | sym = global_sym_chain[hash]; | |
4681 | while (sym) | |
4682 | { | |
4683 | prev = sym; | |
4684 | sym = SYMBOL_VALUE_CHAIN (sym); | |
4685 | ||
4686 | /* Change the symbol address from the misleading chain value | |
4687 | to address zero. */ | |
4688 | SYMBOL_VALUE_ADDRESS (prev) = 0; | |
4689 | ||
4690 | /* Complain about unresolved common block symbols. */ | |
4691 | if (SYMBOL_CLASS (prev) == LOC_STATIC) | |
f1e6e072 | 4692 | SYMBOL_ACLASS_INDEX (prev) = LOC_UNRESOLVED; |
c906108c | 4693 | else |
b98664d3 | 4694 | complaint (_("%s: common block `%s' from " |
3e43a32a | 4695 | "global_sym_chain unresolved"), |
4262abfb | 4696 | objfile_name (objfile), SYMBOL_PRINT_NAME (prev)); |
c906108c SS |
4697 | } |
4698 | } | |
4699 | memset (global_sym_chain, 0, sizeof (global_sym_chain)); | |
4700 | } | |
4701 | ||
4702 | /* Initialize anything that needs initializing when starting to read | |
4703 | a fresh piece of a symbol file, e.g. reading in the stuff corresponding | |
4704 | to a psymtab. */ | |
4705 | ||
4706 | void | |
fba45db2 | 4707 | stabsread_init (void) |
c906108c SS |
4708 | { |
4709 | } | |
4710 | ||
4711 | /* Initialize anything that needs initializing when a completely new | |
4712 | symbol file is specified (not just adding some symbols from another | |
4713 | file, e.g. a shared library). */ | |
4714 | ||
4715 | void | |
fba45db2 | 4716 | stabsread_new_init (void) |
c906108c SS |
4717 | { |
4718 | /* Empty the hash table of global syms looking for values. */ | |
4719 | memset (global_sym_chain, 0, sizeof (global_sym_chain)); | |
4720 | } | |
4721 | ||
4722 | /* Initialize anything that needs initializing at the same time as | |
c378eb4e | 4723 | start_symtab() is called. */ |
c906108c | 4724 | |
c5aa993b | 4725 | void |
fba45db2 | 4726 | start_stabs (void) |
c906108c SS |
4727 | { |
4728 | global_stabs = NULL; /* AIX COFF */ | |
4729 | /* Leave FILENUM of 0 free for builtin types and this file's types. */ | |
4730 | n_this_object_header_files = 1; | |
4731 | type_vector_length = 0; | |
4732 | type_vector = (struct type **) 0; | |
5985ac61 | 4733 | within_function = 0; |
c906108c SS |
4734 | |
4735 | /* FIXME: If common_block_name is not already NULL, we should complain(). */ | |
4736 | common_block_name = NULL; | |
c906108c SS |
4737 | } |
4738 | ||
c378eb4e | 4739 | /* Call after end_symtab(). */ |
c906108c | 4740 | |
c5aa993b | 4741 | void |
fba45db2 | 4742 | end_stabs (void) |
c906108c SS |
4743 | { |
4744 | if (type_vector) | |
4745 | { | |
b8c9b27d | 4746 | xfree (type_vector); |
c906108c SS |
4747 | } |
4748 | type_vector = 0; | |
4749 | type_vector_length = 0; | |
4750 | previous_stab_code = 0; | |
4751 | } | |
4752 | ||
4753 | void | |
fba45db2 | 4754 | finish_global_stabs (struct objfile *objfile) |
c906108c SS |
4755 | { |
4756 | if (global_stabs) | |
4757 | { | |
e148f09d | 4758 | patch_block_stabs (*get_global_symbols (), global_stabs, objfile); |
b8c9b27d | 4759 | xfree (global_stabs); |
c906108c SS |
4760 | global_stabs = NULL; |
4761 | } | |
4762 | } | |
4763 | ||
7e1d63ec AF |
4764 | /* Find the end of the name, delimited by a ':', but don't match |
4765 | ObjC symbols which look like -[Foo bar::]:bla. */ | |
a121b7c1 PA |
4766 | static const char * |
4767 | find_name_end (const char *name) | |
7e1d63ec | 4768 | { |
a121b7c1 | 4769 | const char *s = name; |
433759f7 | 4770 | |
7e1d63ec AF |
4771 | if (s[0] == '-' || *s == '+') |
4772 | { | |
4773 | /* Must be an ObjC method symbol. */ | |
4774 | if (s[1] != '[') | |
4775 | { | |
8a3fe4f8 | 4776 | error (_("invalid symbol name \"%s\""), name); |
7e1d63ec AF |
4777 | } |
4778 | s = strchr (s, ']'); | |
4779 | if (s == NULL) | |
4780 | { | |
8a3fe4f8 | 4781 | error (_("invalid symbol name \"%s\""), name); |
7e1d63ec AF |
4782 | } |
4783 | return strchr (s, ':'); | |
4784 | } | |
4785 | else | |
4786 | { | |
4787 | return strchr (s, ':'); | |
4788 | } | |
4789 | } | |
4790 | ||
2150c3ef TT |
4791 | /* See stabsread.h. */ |
4792 | ||
4793 | int | |
4794 | hashname (const char *name) | |
4795 | { | |
4796 | return hash (name, strlen (name)) % HASHSIZE; | |
4797 | } | |
4798 | ||
c378eb4e | 4799 | /* Initializer for this module. */ |
c906108c SS |
4800 | |
4801 | void | |
fba45db2 | 4802 | _initialize_stabsread (void) |
c906108c SS |
4803 | { |
4804 | undef_types_allocated = 20; | |
4805 | undef_types_length = 0; | |
8d749320 | 4806 | undef_types = XNEWVEC (struct type *, undef_types_allocated); |
bf362611 JB |
4807 | |
4808 | noname_undefs_allocated = 20; | |
4809 | noname_undefs_length = 0; | |
8d749320 | 4810 | noname_undefs = XNEWVEC (struct nat, noname_undefs_allocated); |
f1e6e072 TT |
4811 | |
4812 | stab_register_index = register_symbol_register_impl (LOC_REGISTER, | |
4813 | &stab_register_funcs); | |
4814 | stab_regparm_index = register_symbol_register_impl (LOC_REGPARM_ADDR, | |
4815 | &stab_register_funcs); | |
c906108c | 4816 | } |