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c906108c | 1 | /* Read coff symbol tables and convert to internal format, for GDB. |
42a4f53d | 2 | Copyright (C) 1987-2019 Free Software Foundation, Inc. |
c906108c SS |
3 | Contributed by David D. Johnson, Brown University (ddj@cs.brown.edu). |
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 | #include "defs.h" | |
4de283e4 TT |
21 | #include "symtab.h" |
22 | #include "gdbtypes.h" | |
23 | #include "demangle.h" | |
24 | #include "breakpoint.h" | |
c906108c | 25 | |
4de283e4 TT |
26 | #include "bfd.h" |
27 | #include "gdb_obstack.h" | |
c906108c SS |
28 | #include <ctype.h> |
29 | ||
4de283e4 TT |
30 | #include "coff/internal.h" /* Internal format of COFF symbols in BFD */ |
31 | #include "libcoff.h" /* FIXME secret internal data from BFD */ | |
32 | #include "objfiles.h" | |
0baae8db | 33 | #include "buildsym-legacy.h" |
d55e5aa6 | 34 | #include "stabsread.h" |
4de283e4 | 35 | #include "complaints.h" |
d55e5aa6 | 36 | #include "target.h" |
4de283e4 TT |
37 | #include "block.h" |
38 | #include "dictionary.h" | |
39 | ||
40 | #include "coff-pe-read.h" | |
41 | ||
42 | #include "psymtab.h" | |
43 | #include "build-id.h" | |
ccefe4c4 | 44 | |
91a81f69 TT |
45 | /* The objfile we are currently reading. */ |
46 | ||
dd707e8e | 47 | static struct objfile *coffread_objfile; |
91a81f69 | 48 | |
c5aa993b JM |
49 | struct coff_symfile_info |
50 | { | |
24699405 TT |
51 | file_ptr min_lineno_offset = 0; /* Where in file lowest line#s are. */ |
52 | file_ptr max_lineno_offset = 0; /* 1+last byte of line#s in file. */ | |
c906108c | 53 | |
24699405 TT |
54 | CORE_ADDR textaddr = 0; /* Addr of .text section. */ |
55 | unsigned int textsize = 0; /* Size of .text section. */ | |
e2a03548 | 56 | std::vector<asection *> *stabsects; /* .stab sections. */ |
24699405 TT |
57 | asection *stabstrsect = nullptr; /* Section pointer for .stab section. */ |
58 | char *stabstrdata = nullptr; | |
c5aa993b | 59 | }; |
c906108c | 60 | |
24699405 TT |
61 | /* Key for COFF-associated data. */ |
62 | ||
63 | static const struct objfile_key<coff_symfile_info> coff_objfile_data_key; | |
64 | ||
c906108c SS |
65 | /* Translate an external name string into a user-visible name. */ |
66 | #define EXTERNAL_NAME(string, abfd) \ | |
aff410f1 MS |
67 | (string[0] == bfd_get_symbol_leading_char (abfd) \ |
68 | ? string + 1 : string) | |
c906108c SS |
69 | |
70 | /* To be an sdb debug type, type must have at least a basic or primary | |
71 | derived type. Using this rather than checking against T_NULL is | |
72 | said to prevent core dumps if we try to operate on Michael Bloom | |
73 | dbx-in-coff file. */ | |
74 | ||
75 | #define SDB_TYPE(type) (BTYPE(type) | (type & N_TMASK)) | |
76 | ||
c906108c SS |
77 | /* Core address of start and end of text of current source file. |
78 | This comes from a ".text" symbol where x_nlinno > 0. */ | |
79 | ||
80 | static CORE_ADDR current_source_start_addr; | |
81 | static CORE_ADDR current_source_end_addr; | |
82 | ||
83 | /* The addresses of the symbol table stream and number of symbols | |
84 | of the object file we are reading (as copied into core). */ | |
85 | ||
86 | static bfd *nlist_bfd_global; | |
87 | static int nlist_nsyms_global; | |
88 | ||
c906108c | 89 | |
aff410f1 MS |
90 | /* Pointers to scratch storage, used for reading raw symbols and |
91 | auxents. */ | |
c906108c SS |
92 | |
93 | static char *temp_sym; | |
94 | static char *temp_aux; | |
95 | ||
96 | /* Local variables that hold the shift and mask values for the | |
97 | COFF file that we are currently reading. These come back to us | |
98 | from BFD, and are referenced by their macro names, as well as | |
99 | internally to the BTYPE, ISPTR, ISFCN, ISARY, ISTAG, and DECREF | |
100 | macros from include/coff/internal.h . */ | |
101 | ||
c5aa993b JM |
102 | static unsigned local_n_btmask; |
103 | static unsigned local_n_btshft; | |
104 | static unsigned local_n_tmask; | |
105 | static unsigned local_n_tshift; | |
c906108c SS |
106 | |
107 | #define N_BTMASK local_n_btmask | |
108 | #define N_BTSHFT local_n_btshft | |
109 | #define N_TMASK local_n_tmask | |
110 | #define N_TSHIFT local_n_tshift | |
c5aa993b | 111 | |
aff410f1 MS |
112 | /* Local variables that hold the sizes in the file of various COFF |
113 | structures. (We only need to know this to read them from the file | |
114 | -- BFD will then translate the data in them, into `internal_xxx' | |
115 | structs in the right byte order, alignment, etc.) */ | |
c906108c | 116 | |
c5aa993b JM |
117 | static unsigned local_linesz; |
118 | static unsigned local_symesz; | |
119 | static unsigned local_auxesz; | |
c906108c SS |
120 | |
121 | /* This is set if this is a PE format file. */ | |
122 | ||
123 | static int pe_file; | |
124 | ||
125 | /* Chain of typedefs of pointers to empty struct/union types. | |
126 | They are chained thru the SYMBOL_VALUE_CHAIN. */ | |
127 | ||
128 | static struct symbol *opaque_type_chain[HASHSIZE]; | |
129 | ||
aff410f1 | 130 | /* Simplified internal version of coff symbol table information. */ |
c906108c | 131 | |
c5aa993b JM |
132 | struct coff_symbol |
133 | { | |
134 | char *c_name; | |
aff410f1 MS |
135 | int c_symnum; /* Symbol number of this entry. */ |
136 | int c_naux; /* 0 if syment only, 1 if syment + | |
137 | auxent, etc. */ | |
5e8db398 | 138 | CORE_ADDR c_value; |
c5aa993b JM |
139 | int c_sclass; |
140 | int c_secnum; | |
141 | unsigned int c_type; | |
142 | }; | |
c906108c | 143 | |
fc474241 DE |
144 | /* Vector of types defined so far, indexed by their type numbers. */ |
145 | ||
146 | static struct type **type_vector; | |
147 | ||
148 | /* Number of elements allocated for type_vector currently. */ | |
149 | ||
150 | static int type_vector_length; | |
151 | ||
152 | /* Initial size of type vector. Is realloc'd larger if needed, and | |
153 | realloc'd down to the size actually used, when completed. */ | |
154 | ||
155 | #define INITIAL_TYPE_VECTOR_LENGTH 160 | |
156 | ||
e2a03548 TT |
157 | static char *linetab = NULL; |
158 | static long linetab_offset; | |
159 | static unsigned long linetab_size; | |
160 | ||
161 | static char *stringtab = NULL; | |
162 | ||
a14ed312 | 163 | extern void stabsread_clear_cache (void); |
7be570e7 | 164 | |
5e2b427d UW |
165 | static struct type *coff_read_struct_type (int, int, int, |
166 | struct objfile *); | |
c906108c | 167 | |
a14ed312 | 168 | static struct type *decode_base_type (struct coff_symbol *, |
aff410f1 MS |
169 | unsigned int, |
170 | union internal_auxent *, | |
5e2b427d | 171 | struct objfile *); |
c906108c | 172 | |
a14ed312 | 173 | static struct type *decode_type (struct coff_symbol *, unsigned int, |
5e2b427d UW |
174 | union internal_auxent *, |
175 | struct objfile *); | |
c906108c | 176 | |
a14ed312 KB |
177 | static struct type *decode_function_type (struct coff_symbol *, |
178 | unsigned int, | |
5e2b427d UW |
179 | union internal_auxent *, |
180 | struct objfile *); | |
c906108c | 181 | |
5e2b427d UW |
182 | static struct type *coff_read_enum_type (int, int, int, |
183 | struct objfile *); | |
c906108c | 184 | |
a14ed312 KB |
185 | static struct symbol *process_coff_symbol (struct coff_symbol *, |
186 | union internal_auxent *, | |
187 | struct objfile *); | |
c906108c | 188 | |
a14ed312 | 189 | static void patch_opaque_types (struct symtab *); |
c906108c | 190 | |
a14ed312 | 191 | static void enter_linenos (long, int, int, struct objfile *); |
c906108c | 192 | |
e2a03548 | 193 | static int init_lineno (bfd *, long, int, gdb::unique_xmalloc_ptr<char> *); |
c906108c | 194 | |
a14ed312 | 195 | static char *getsymname (struct internal_syment *); |
c906108c | 196 | |
9f37bbcc | 197 | static const char *coff_getfilename (union internal_auxent *); |
c906108c | 198 | |
e2a03548 | 199 | static int init_stringtab (bfd *, long, gdb::unique_xmalloc_ptr<char> *); |
c906108c | 200 | |
a14ed312 | 201 | static void read_one_sym (struct coff_symbol *, |
aff410f1 MS |
202 | struct internal_syment *, |
203 | union internal_auxent *); | |
c906108c | 204 | |
8dddcb8f TT |
205 | static void coff_symtab_read (minimal_symbol_reader &, |
206 | long, unsigned int, struct objfile *); | |
c906108c SS |
207 | \f |
208 | /* We are called once per section from coff_symfile_read. We | |
209 | need to examine each section we are passed, check to see | |
210 | if it is something we are interested in processing, and | |
211 | if so, stash away some access information for the section. | |
212 | ||
213 | FIXME: The section names should not be hardwired strings (what | |
214 | should they be? I don't think most object file formats have enough | |
215 | section flags to specify what kind of debug section it is | |
216 | -kingdon). */ | |
217 | ||
218 | static void | |
12b9c64f | 219 | coff_locate_sections (bfd *abfd, asection *sectp, void *csip) |
c906108c | 220 | { |
52f0bd74 | 221 | struct coff_symfile_info *csi; |
c906108c SS |
222 | const char *name; |
223 | ||
224 | csi = (struct coff_symfile_info *) csip; | |
225 | name = bfd_get_section_name (abfd, sectp); | |
7ecb6532 | 226 | if (strcmp (name, ".text") == 0) |
c906108c SS |
227 | { |
228 | csi->textaddr = bfd_section_vma (abfd, sectp); | |
229 | csi->textsize += bfd_section_size (abfd, sectp); | |
230 | } | |
61012eef | 231 | else if (startswith (name, ".text")) |
c906108c SS |
232 | { |
233 | csi->textsize += bfd_section_size (abfd, sectp); | |
234 | } | |
7ecb6532 | 235 | else if (strcmp (name, ".stabstr") == 0) |
c906108c SS |
236 | { |
237 | csi->stabstrsect = sectp; | |
238 | } | |
61012eef | 239 | else if (startswith (name, ".stab")) |
c906108c SS |
240 | { |
241 | const char *s; | |
242 | ||
243 | /* We can have multiple .stab sections if linked with | |
244 | --split-by-reloc. */ | |
245 | for (s = name + sizeof ".stab" - 1; *s != '\0'; s++) | |
c5aa993b | 246 | if (!isdigit (*s)) |
c906108c SS |
247 | break; |
248 | if (*s == '\0') | |
e2a03548 | 249 | csi->stabsects->push_back (sectp); |
c906108c SS |
250 | } |
251 | } | |
252 | ||
253 | /* Return the section_offsets* that CS points to. */ | |
a14ed312 | 254 | static int cs_to_section (struct coff_symbol *, struct objfile *); |
c906108c | 255 | |
c5aa993b JM |
256 | struct find_targ_sec_arg |
257 | { | |
258 | int targ_index; | |
259 | asection **resultp; | |
260 | }; | |
c906108c | 261 | |
c5aa993b | 262 | static void |
12b9c64f | 263 | find_targ_sec (bfd *abfd, asection *sect, void *obj) |
c906108c | 264 | { |
c5aa993b | 265 | struct find_targ_sec_arg *args = (struct find_targ_sec_arg *) obj; |
c5504eaf | 266 | |
c906108c SS |
267 | if (sect->target_index == args->targ_index) |
268 | *args->resultp = sect; | |
269 | } | |
270 | ||
fbcebcb1 DJ |
271 | /* Return the bfd_section that CS points to. */ |
272 | static struct bfd_section* | |
273 | cs_to_bfd_section (struct coff_symbol *cs, struct objfile *objfile) | |
c906108c SS |
274 | { |
275 | asection *sect = NULL; | |
276 | struct find_targ_sec_arg args; | |
c906108c SS |
277 | |
278 | args.targ_index = cs->c_secnum; | |
279 | args.resultp = § | |
280 | bfd_map_over_sections (objfile->obfd, find_targ_sec, &args); | |
fbcebcb1 DJ |
281 | return sect; |
282 | } | |
283 | ||
284 | /* Return the section number (SECT_OFF_*) that CS points to. */ | |
285 | static int | |
286 | cs_to_section (struct coff_symbol *cs, struct objfile *objfile) | |
287 | { | |
288 | asection *sect = cs_to_bfd_section (cs, objfile); | |
c5504eaf | 289 | |
05cfdb42 DJ |
290 | if (sect == NULL) |
291 | return SECT_OFF_TEXT (objfile); | |
65cf3563 | 292 | return gdb_bfd_section_index (objfile->obfd, sect); |
c906108c SS |
293 | } |
294 | ||
295 | /* Return the address of the section of a COFF symbol. */ | |
296 | ||
a14ed312 | 297 | static CORE_ADDR cs_section_address (struct coff_symbol *, bfd *); |
c906108c SS |
298 | |
299 | static CORE_ADDR | |
fba45db2 | 300 | cs_section_address (struct coff_symbol *cs, bfd *abfd) |
c906108c SS |
301 | { |
302 | asection *sect = NULL; | |
303 | struct find_targ_sec_arg args; | |
304 | CORE_ADDR addr = 0; | |
305 | ||
306 | args.targ_index = cs->c_secnum; | |
307 | args.resultp = § | |
308 | bfd_map_over_sections (abfd, find_targ_sec, &args); | |
309 | if (sect != NULL) | |
81b9b86e | 310 | addr = bfd_get_section_vma (abfd, sect); |
c906108c SS |
311 | return addr; |
312 | } | |
313 | ||
314 | /* Look up a coff type-number index. Return the address of the slot | |
315 | where the type for that index is stored. | |
316 | The type-number is in INDEX. | |
317 | ||
318 | This can be used for finding the type associated with that index | |
319 | or for associating a new type with the index. */ | |
320 | ||
321 | static struct type ** | |
aa1ee363 | 322 | coff_lookup_type (int index) |
c906108c SS |
323 | { |
324 | if (index >= type_vector_length) | |
325 | { | |
326 | int old_vector_length = type_vector_length; | |
327 | ||
328 | type_vector_length *= 2; | |
c5aa993b | 329 | if (index /* is still */ >= type_vector_length) |
c906108c SS |
330 | type_vector_length = index * 2; |
331 | ||
332 | type_vector = (struct type **) | |
333 | xrealloc ((char *) type_vector, | |
334 | type_vector_length * sizeof (struct type *)); | |
335 | memset (&type_vector[old_vector_length], 0, | |
c5aa993b | 336 | (type_vector_length - old_vector_length) * sizeof (struct type *)); |
c906108c SS |
337 | } |
338 | return &type_vector[index]; | |
339 | } | |
340 | ||
341 | /* Make sure there is a type allocated for type number index | |
342 | and return the type object. | |
343 | This can create an empty (zeroed) type object. */ | |
344 | ||
345 | static struct type * | |
fba45db2 | 346 | coff_alloc_type (int index) |
c906108c | 347 | { |
52f0bd74 AC |
348 | struct type **type_addr = coff_lookup_type (index); |
349 | struct type *type = *type_addr; | |
c906108c SS |
350 | |
351 | /* If we are referring to a type not known at all yet, | |
352 | allocate an empty type for it. | |
353 | We will fill it in later if we find out how. */ | |
354 | if (type == NULL) | |
355 | { | |
dd707e8e | 356 | type = alloc_type (coffread_objfile); |
c906108c SS |
357 | *type_addr = type; |
358 | } | |
359 | return type; | |
360 | } | |
361 | \f | |
c906108c SS |
362 | /* Start a new symtab for a new source file. |
363 | This is called when a COFF ".file" symbol is seen; | |
364 | it indicates the start of data for one original source file. */ | |
365 | ||
366 | static void | |
4d663531 | 367 | coff_start_symtab (struct objfile *objfile, const char *name) |
c906108c | 368 | { |
5985ac61 | 369 | within_function = 0; |
4d663531 | 370 | start_symtab (objfile, |
827f438f | 371 | name, |
c5aa993b JM |
372 | /* We never know the directory name for COFF. */ |
373 | NULL, | |
2c99ee5c TT |
374 | /* The start address is irrelevant, since we call |
375 | set_last_source_start_addr in coff_end_symtab. */ | |
5ffa0793 PA |
376 | 0, |
377 | /* Let buildsym.c deduce the language for this symtab. */ | |
378 | language_unknown); | |
c906108c | 379 | record_debugformat ("COFF"); |
c906108c SS |
380 | } |
381 | ||
382 | /* Save the vital information from when starting to read a file, | |
383 | for use when closing off the current file. | |
aff410f1 MS |
384 | NAME is the file name the symbols came from, START_ADDR is the |
385 | first text address for the file, and SIZE is the number of bytes of | |
386 | text. */ | |
c906108c SS |
387 | |
388 | static void | |
9f37bbcc | 389 | complete_symtab (const char *name, CORE_ADDR start_addr, unsigned int size) |
c906108c | 390 | { |
46212e0b | 391 | set_last_source_file (name); |
c906108c SS |
392 | current_source_start_addr = start_addr; |
393 | current_source_end_addr = start_addr + size; | |
c906108c SS |
394 | } |
395 | ||
aff410f1 MS |
396 | /* Finish the symbol definitions for one main source file, close off |
397 | all the lexical contexts for that file (creating struct block's for | |
398 | them), then make the struct symtab for that file and put it in the | |
399 | list of all such. */ | |
c906108c SS |
400 | |
401 | static void | |
fba45db2 | 402 | coff_end_symtab (struct objfile *objfile) |
c906108c | 403 | { |
2c99ee5c | 404 | set_last_source_start_addr (current_source_start_addr); |
c906108c | 405 | |
4d663531 | 406 | end_symtab (current_source_end_addr, SECT_OFF_TEXT (objfile)); |
c906108c | 407 | |
aff410f1 | 408 | /* Reinitialize for beginning of new file. */ |
46212e0b | 409 | set_last_source_file (NULL); |
c906108c SS |
410 | } |
411 | \f | |
af312be7 JB |
412 | /* The linker sometimes generates some non-function symbols inside |
413 | functions referencing variables imported from another DLL. | |
414 | Return nonzero if the given symbol corresponds to one of them. */ | |
415 | ||
416 | static int | |
417 | is_import_fixup_symbol (struct coff_symbol *cs, | |
418 | enum minimal_symbol_type type) | |
419 | { | |
420 | /* The following is a bit of a heuristic using the characterictics | |
421 | of these fixup symbols, but should work well in practice... */ | |
422 | int i; | |
423 | ||
424 | /* Must be a non-static text symbol. */ | |
425 | if (type != mst_text) | |
426 | return 0; | |
427 | ||
428 | /* Must be a non-function symbol. */ | |
429 | if (ISFCN (cs->c_type)) | |
430 | return 0; | |
431 | ||
432 | /* The name must start with "__fu<digits>__". */ | |
61012eef | 433 | if (!startswith (cs->c_name, "__fu")) |
af312be7 JB |
434 | return 0; |
435 | if (! isdigit (cs->c_name[4])) | |
436 | return 0; | |
437 | for (i = 5; cs->c_name[i] != '\0' && isdigit (cs->c_name[i]); i++) | |
438 | /* Nothing, just incrementing index past all digits. */; | |
439 | if (cs->c_name[i] != '_' || cs->c_name[i + 1] != '_') | |
440 | return 0; | |
441 | ||
442 | return 1; | |
443 | } | |
444 | ||
fbcebcb1 | 445 | static struct minimal_symbol * |
8dddcb8f TT |
446 | record_minimal_symbol (minimal_symbol_reader &reader, |
447 | struct coff_symbol *cs, CORE_ADDR address, | |
fbcebcb1 DJ |
448 | enum minimal_symbol_type type, int section, |
449 | struct objfile *objfile) | |
c906108c | 450 | { |
aff410f1 | 451 | /* We don't want TDESC entry points in the minimal symbol table. */ |
fbcebcb1 DJ |
452 | if (cs->c_name[0] == '@') |
453 | return NULL; | |
c906108c | 454 | |
af312be7 JB |
455 | if (is_import_fixup_symbol (cs, type)) |
456 | { | |
457 | /* Because the value of these symbols is within a function code | |
458 | range, these symbols interfere with the symbol-from-address | |
459 | reverse lookup; this manifests itselfs in backtraces, or any | |
460 | other commands that prints symbolic addresses. Just pretend | |
461 | these symbols do not exist. */ | |
462 | return NULL; | |
463 | } | |
464 | ||
3db066bc TT |
465 | return reader.record_full (cs->c_name, strlen (cs->c_name), true, address, |
466 | type, section); | |
c906108c SS |
467 | } |
468 | \f | |
469 | /* coff_symfile_init () | |
470 | is the coff-specific initialization routine for reading symbols. | |
471 | It is passed a struct objfile which contains, among other things, | |
472 | the BFD for the file whose symbols are being read, and a slot for | |
473 | a pointer to "private data" which we fill with cookies and other | |
474 | treats for coff_symfile_read (). | |
475 | ||
aff410f1 MS |
476 | We will only be called if this is a COFF or COFF-like file. BFD |
477 | handles figuring out the format of the file, and code in symtab.c | |
c906108c SS |
478 | uses BFD's determination to vector to us. |
479 | ||
aff410f1 MS |
480 | The ultimate result is a new symtab (or, FIXME, eventually a |
481 | psymtab). */ | |
c906108c SS |
482 | |
483 | static void | |
fba45db2 | 484 | coff_symfile_init (struct objfile *objfile) |
c906108c | 485 | { |
aff410f1 | 486 | /* Allocate struct to keep track of the symfile. */ |
24699405 | 487 | coff_objfile_data_key.emplace (objfile); |
c906108c SS |
488 | |
489 | /* COFF objects may be reordered, so set OBJF_REORDERED. If we | |
490 | find this causes a significant slowdown in gdb then we could | |
491 | set it in the debug symbol readers only when necessary. */ | |
492 | objfile->flags |= OBJF_REORDERED; | |
c906108c SS |
493 | } |
494 | ||
aff410f1 MS |
495 | /* This function is called for every section; it finds the outer |
496 | limits of the line table (minimum and maximum file offset) so that | |
497 | the mainline code can read the whole thing for efficiency. */ | |
c906108c | 498 | |
c906108c | 499 | static void |
7be0c536 | 500 | find_linenos (bfd *abfd, struct bfd_section *asect, void *vpinfo) |
c906108c SS |
501 | { |
502 | struct coff_symfile_info *info; | |
503 | int size, count; | |
504 | file_ptr offset, maxoff; | |
505 | ||
aff410f1 | 506 | /* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */ |
c906108c | 507 | count = asect->lineno_count; |
aff410f1 | 508 | /* End of warning. */ |
c906108c SS |
509 | |
510 | if (count == 0) | |
511 | return; | |
512 | size = count * local_linesz; | |
513 | ||
c5aa993b | 514 | info = (struct coff_symfile_info *) vpinfo; |
aff410f1 | 515 | /* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */ |
c906108c | 516 | offset = asect->line_filepos; |
aff410f1 | 517 | /* End of warning. */ |
c906108c SS |
518 | |
519 | if (offset < info->min_lineno_offset || info->min_lineno_offset == 0) | |
520 | info->min_lineno_offset = offset; | |
521 | ||
522 | maxoff = offset + size; | |
523 | if (maxoff > info->max_lineno_offset) | |
524 | info->max_lineno_offset = maxoff; | |
525 | } | |
526 | ||
527 | ||
528 | /* The BFD for this file -- only good while we're actively reading | |
529 | symbols into a psymtab or a symtab. */ | |
530 | ||
531 | static bfd *symfile_bfd; | |
532 | ||
533 | /* Read a symbol file, after initialization by coff_symfile_init. */ | |
534 | ||
c906108c | 535 | static void |
b15cc25c | 536 | coff_symfile_read (struct objfile *objfile, symfile_add_flags symfile_flags) |
c906108c SS |
537 | { |
538 | struct coff_symfile_info *info; | |
c906108c SS |
539 | bfd *abfd = objfile->obfd; |
540 | coff_data_type *cdata = coff_data (abfd); | |
b926417a | 541 | char *filename = bfd_get_filename (abfd); |
52f0bd74 | 542 | int val; |
745b8ca0 | 543 | unsigned int num_symbols; |
c906108c SS |
544 | int symtab_offset; |
545 | int stringtab_offset; | |
c906108c | 546 | int stabstrsize; |
c2d11a7d | 547 | |
24699405 | 548 | info = coff_objfile_data_key.get (objfile); |
aff410f1 | 549 | symfile_bfd = abfd; /* Kludge for swap routines. */ |
c906108c | 550 | |
e2a03548 TT |
551 | std::vector<asection *> stabsects; |
552 | scoped_restore restore_stabsects | |
553 | = make_scoped_restore (&info->stabsects, &stabsects); | |
554 | ||
c906108c | 555 | /* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */ |
c5aa993b JM |
556 | num_symbols = bfd_get_symcount (abfd); /* How many syms */ |
557 | symtab_offset = cdata->sym_filepos; /* Symbol table file offset */ | |
558 | stringtab_offset = symtab_offset + /* String table file offset */ | |
559 | num_symbols * cdata->local_symesz; | |
c906108c SS |
560 | |
561 | /* Set a few file-statics that give us specific information about | |
562 | the particular COFF file format we're reading. */ | |
c906108c SS |
563 | local_n_btmask = cdata->local_n_btmask; |
564 | local_n_btshft = cdata->local_n_btshft; | |
c5aa993b | 565 | local_n_tmask = cdata->local_n_tmask; |
c906108c | 566 | local_n_tshift = cdata->local_n_tshift; |
c5aa993b JM |
567 | local_linesz = cdata->local_linesz; |
568 | local_symesz = cdata->local_symesz; | |
569 | local_auxesz = cdata->local_auxesz; | |
c906108c SS |
570 | |
571 | /* Allocate space for raw symbol and aux entries, based on their | |
572 | space requirements as reported by BFD. */ | |
e2a03548 TT |
573 | gdb::def_vector<char> temp_storage (cdata->local_symesz |
574 | + cdata->local_auxesz); | |
575 | temp_sym = temp_storage.data (); | |
c906108c | 576 | temp_aux = temp_sym + cdata->local_symesz; |
c906108c SS |
577 | |
578 | /* We need to know whether this is a PE file, because in PE files, | |
579 | unlike standard COFF files, symbol values are stored as offsets | |
580 | from the section address, rather than as absolute addresses. | |
581 | FIXME: We should use BFD to read the symbol table, and thus avoid | |
582 | this problem. */ | |
0d06e24b | 583 | pe_file = |
61012eef GB |
584 | startswith (bfd_get_target (objfile->obfd), "pe") |
585 | || startswith (bfd_get_target (objfile->obfd), "epoc-pe"); | |
c906108c | 586 | |
aff410f1 | 587 | /* End of warning. */ |
c906108c | 588 | |
c906108c SS |
589 | info->min_lineno_offset = 0; |
590 | info->max_lineno_offset = 0; | |
c906108c | 591 | |
ebeb39fe JB |
592 | /* Only read line number information if we have symbols. |
593 | ||
594 | On Windows NT, some of the system's DLL's have sections with | |
595 | PointerToLinenumbers fields that are non-zero, but point at | |
596 | random places within the image file. (In the case I found, | |
597 | KERNEL32.DLL's .text section has a line number info pointer that | |
598 | points into the middle of the string `lib\\i386\kernel32.dll'.) | |
599 | ||
600 | However, these DLL's also have no symbols. The line number | |
601 | tables are meaningless without symbols. And in fact, GDB never | |
602 | uses the line number information unless there are symbols. So we | |
603 | can avoid spurious error messages (and maybe run a little | |
604 | faster!) by not even reading the line number table unless we have | |
605 | symbols. */ | |
e2a03548 TT |
606 | scoped_restore restore_linetab = make_scoped_restore (&linetab); |
607 | gdb::unique_xmalloc_ptr<char> linetab_storage; | |
ebeb39fe JB |
608 | if (num_symbols > 0) |
609 | { | |
610 | /* Read the line number table, all at once. */ | |
611 | bfd_map_over_sections (abfd, find_linenos, (void *) info); | |
612 | ||
ebeb39fe | 613 | val = init_lineno (abfd, info->min_lineno_offset, |
e2a03548 TT |
614 | info->max_lineno_offset - info->min_lineno_offset, |
615 | &linetab_storage); | |
ebeb39fe | 616 | if (val < 0) |
b926417a | 617 | error (_("\"%s\": error reading line numbers."), filename); |
ebeb39fe | 618 | } |
c906108c SS |
619 | |
620 | /* Now read the string table, all at once. */ | |
621 | ||
e2a03548 TT |
622 | scoped_restore restore_stringtab = make_scoped_restore (&stringtab); |
623 | gdb::unique_xmalloc_ptr<char> stringtab_storage; | |
624 | val = init_stringtab (abfd, stringtab_offset, &stringtab_storage); | |
c906108c | 625 | if (val < 0) |
b926417a | 626 | error (_("\"%s\": can't get string table"), filename); |
c906108c | 627 | |
d25e8719 | 628 | minimal_symbol_reader reader (objfile); |
c906108c SS |
629 | |
630 | /* Now that the executable file is positioned at symbol table, | |
631 | process it and define symbols accordingly. */ | |
632 | ||
8dddcb8f | 633 | coff_symtab_read (reader, (long) symtab_offset, num_symbols, objfile); |
c906108c | 634 | |
aff410f1 MS |
635 | /* Install any minimal symbols that have been collected as the |
636 | current minimal symbols for this objfile. */ | |
c906108c | 637 | |
d25e8719 | 638 | reader.install (); |
c906108c | 639 | |
303c5ee1 YQ |
640 | if (pe_file) |
641 | { | |
7932255d | 642 | for (minimal_symbol *msym : objfile->msymbols ()) |
303c5ee1 | 643 | { |
efd66ac6 | 644 | const char *name = MSYMBOL_LINKAGE_NAME (msym); |
303c5ee1 YQ |
645 | |
646 | /* If the minimal symbols whose name are prefixed by "__imp_" | |
647 | or "_imp_", get rid of the prefix, and search the minimal | |
648 | symbol in OBJFILE. Note that 'maintenance print msymbols' | |
649 | shows that type of these "_imp_XXXX" symbols is mst_data. */ | |
20d35291 | 650 | if (MSYMBOL_TYPE (msym) == mst_data) |
303c5ee1 | 651 | { |
20d35291 PA |
652 | const char *name1 = NULL; |
653 | ||
654 | if (startswith (name, "_imp_")) | |
655 | name1 = name + 5; | |
656 | else if (startswith (name, "__imp_")) | |
657 | name1 = name + 6; | |
658 | if (name1 != NULL) | |
659 | { | |
660 | int lead = bfd_get_symbol_leading_char (objfile->obfd); | |
661 | struct bound_minimal_symbol found; | |
662 | ||
663 | if (lead != '\0' && *name1 == lead) | |
664 | name1 += 1; | |
665 | ||
666 | found = lookup_minimal_symbol (name1, NULL, objfile); | |
667 | ||
668 | /* If found, there are symbols named "_imp_foo" and "foo" | |
669 | respectively in OBJFILE. Set the type of symbol "foo" | |
670 | as 'mst_solib_trampoline'. */ | |
671 | if (found.minsym != NULL | |
672 | && MSYMBOL_TYPE (found.minsym) == mst_text) | |
673 | MSYMBOL_TYPE (found.minsym) = mst_solib_trampoline; | |
674 | } | |
303c5ee1 YQ |
675 | } |
676 | } | |
677 | } | |
678 | ||
97cbe998 SDJ |
679 | if (!(objfile->flags & OBJF_READNEVER)) |
680 | bfd_map_over_sections (abfd, coff_locate_sections, (void *) info); | |
c906108c | 681 | |
e2a03548 | 682 | if (!info->stabsects->empty()) |
c906108c | 683 | { |
c5aa993b | 684 | if (!info->stabstrsect) |
b83266a0 | 685 | { |
3e43a32a MS |
686 | error (_("The debugging information in `%s' is corrupted.\nThe " |
687 | "file has a `.stabs' section, but no `.stabstr' section."), | |
b926417a | 688 | filename); |
b83266a0 SS |
689 | } |
690 | ||
c906108c | 691 | /* FIXME: dubious. Why can't we use something normal like |
c5aa993b | 692 | bfd_get_section_contents? */ |
c906108c SS |
693 | bfd_seek (abfd, abfd->where, 0); |
694 | ||
695 | stabstrsize = bfd_section_size (abfd, info->stabstrsect); | |
696 | ||
697 | coffstab_build_psymtabs (objfile, | |
c906108c | 698 | info->textaddr, info->textsize, |
e2a03548 | 699 | *info->stabsects, |
c906108c SS |
700 | info->stabstrsect->filepos, stabstrsize); |
701 | } | |
251d32d9 | 702 | if (dwarf2_has_info (objfile, NULL)) |
42a076f0 EZ |
703 | { |
704 | /* DWARF2 sections. */ | |
f29dff0a | 705 | dwarf2_build_psymtabs (objfile); |
42a076f0 | 706 | } |
c906108c | 707 | |
fea25152 BF |
708 | dwarf2_build_frame_info (objfile); |
709 | ||
9cce227f TG |
710 | /* Try to add separate debug file if no symbols table found. */ |
711 | if (!objfile_has_partial_symbols (objfile)) | |
712 | { | |
a8dbfd58 | 713 | std::string debugfile = find_separate_debug_file_by_buildid (objfile); |
9cce227f | 714 | |
a8dbfd58 | 715 | if (debugfile.empty ()) |
c74f7d1c | 716 | debugfile = find_separate_debug_file_by_debuglink (objfile); |
9cce227f | 717 | |
a8dbfd58 | 718 | if (!debugfile.empty ()) |
9cce227f | 719 | { |
b926417a | 720 | gdb_bfd_ref_ptr debug_bfd (symfile_bfd_open (debugfile.c_str ())); |
c5504eaf | 721 | |
b926417a | 722 | symbol_file_add_separate (debug_bfd.get (), debugfile.c_str (), |
a8dbfd58 | 723 | symfile_flags, objfile); |
9cce227f TG |
724 | } |
725 | } | |
c906108c SS |
726 | } |
727 | ||
728 | static void | |
fba45db2 | 729 | coff_new_init (struct objfile *ignore) |
c906108c SS |
730 | { |
731 | } | |
732 | ||
aff410f1 MS |
733 | /* Perform any local cleanups required when we are done with a |
734 | particular objfile. I.E, we are in the process of discarding all | |
735 | symbol information for an objfile, freeing up all memory held for | |
736 | it, and unlinking the objfile struct from the global list of known | |
737 | objfiles. */ | |
c906108c SS |
738 | |
739 | static void | |
fba45db2 | 740 | coff_symfile_finish (struct objfile *objfile) |
c906108c | 741 | { |
aff410f1 | 742 | /* Let stabs reader clean up. */ |
7be570e7 | 743 | stabsread_clear_cache (); |
c906108c | 744 | } |
c906108c | 745 | \f |
c5aa993b | 746 | |
c906108c SS |
747 | /* Given pointers to a symbol table in coff style exec file, |
748 | analyze them and create struct symtab's describing the symbols. | |
749 | NSYMS is the number of symbols in the symbol table. | |
750 | We read them one at a time using read_one_sym (). */ | |
751 | ||
752 | static void | |
8dddcb8f TT |
753 | coff_symtab_read (minimal_symbol_reader &reader, |
754 | long symtab_offset, unsigned int nsyms, | |
fba45db2 | 755 | struct objfile *objfile) |
c906108c | 756 | { |
5e2b427d | 757 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
875e5398 | 758 | struct context_stack *newobj = nullptr; |
c906108c | 759 | struct coff_symbol coff_symbol; |
52f0bd74 | 760 | struct coff_symbol *cs = &coff_symbol; |
c906108c SS |
761 | static struct internal_syment main_sym; |
762 | static union internal_auxent main_aux; | |
763 | struct coff_symbol fcn_cs_saved; | |
764 | static struct internal_syment fcn_sym_saved; | |
765 | static union internal_auxent fcn_aux_saved; | |
c906108c SS |
766 | /* A .file is open. */ |
767 | int in_source_file = 0; | |
768 | int next_file_symnum = -1; | |
769 | /* Name of the current file. */ | |
9f37bbcc | 770 | const char *filestring = ""; |
c906108c SS |
771 | int depth = 0; |
772 | int fcn_first_line = 0; | |
b9179dbc | 773 | CORE_ADDR fcn_first_line_addr = 0; |
c906108c SS |
774 | int fcn_last_line = 0; |
775 | int fcn_start_addr = 0; | |
776 | long fcn_line_ptr = 0; | |
777 | int val; | |
778 | CORE_ADDR tmpaddr; | |
05cfdb42 | 779 | struct minimal_symbol *msym; |
c906108c | 780 | |
4735f0ed TT |
781 | scoped_free_pendings free_pending; |
782 | ||
c906108c | 783 | /* Work around a stdio bug in SunOS4.1.1 (this makes me nervous.... |
aff410f1 MS |
784 | it's hard to know I've really worked around it. The fix should |
785 | be harmless, anyway). The symptom of the bug is that the first | |
c906108c SS |
786 | fread (in read_one_sym), will (in my example) actually get data |
787 | from file offset 268, when the fseek was to 264 (and ftell shows | |
788 | 264). This causes all hell to break loose. I was unable to | |
789 | reproduce this on a short test program which operated on the same | |
790 | file, performing (I think) the same sequence of operations. | |
791 | ||
792 | It stopped happening when I put in this (former) rewind(). | |
793 | ||
794 | FIXME: Find out if this has been reported to Sun, whether it has | |
795 | been fixed in a later release, etc. */ | |
796 | ||
797 | bfd_seek (objfile->obfd, 0, 0); | |
798 | ||
aff410f1 | 799 | /* Position to read the symbol table. */ |
c906108c SS |
800 | val = bfd_seek (objfile->obfd, (long) symtab_offset, 0); |
801 | if (val < 0) | |
4262abfb | 802 | perror_with_name (objfile_name (objfile)); |
c906108c | 803 | |
dd707e8e | 804 | coffread_objfile = objfile; |
c906108c SS |
805 | nlist_bfd_global = objfile->obfd; |
806 | nlist_nsyms_global = nsyms; | |
46212e0b | 807 | set_last_source_file (NULL); |
c906108c SS |
808 | memset (opaque_type_chain, 0, sizeof opaque_type_chain); |
809 | ||
aff410f1 | 810 | if (type_vector) /* Get rid of previous one. */ |
b8c9b27d | 811 | xfree (type_vector); |
fc474241 | 812 | type_vector_length = INITIAL_TYPE_VECTOR_LENGTH; |
8d749320 | 813 | type_vector = XCNEWVEC (struct type *, type_vector_length); |
c906108c | 814 | |
4d663531 | 815 | coff_start_symtab (objfile, ""); |
c906108c SS |
816 | |
817 | symnum = 0; | |
818 | while (symnum < nsyms) | |
819 | { | |
820 | QUIT; /* Make this command interruptable. */ | |
821 | ||
822 | read_one_sym (cs, &main_sym, &main_aux); | |
823 | ||
824 | if (cs->c_symnum == next_file_symnum && cs->c_sclass != C_FILE) | |
825 | { | |
46212e0b | 826 | if (get_last_source_file ()) |
c906108c SS |
827 | coff_end_symtab (objfile); |
828 | ||
4d663531 | 829 | coff_start_symtab (objfile, "_globals_"); |
969107c5 EZ |
830 | /* coff_start_symtab will set the language of this symtab to |
831 | language_unknown, since such a ``file name'' is not | |
832 | recognized. Override that with the minimal language to | |
833 | allow printing values in this symtab. */ | |
3c65e5b3 | 834 | get_current_subfile ()->language = language_minimal; |
c906108c | 835 | complete_symtab ("_globals_", 0, 0); |
aff410f1 MS |
836 | /* Done with all files, everything from here on out is |
837 | globals. */ | |
c906108c SS |
838 | } |
839 | ||
aff410f1 MS |
840 | /* Special case for file with type declarations only, no |
841 | text. */ | |
46212e0b | 842 | if (!get_last_source_file () && SDB_TYPE (cs->c_type) |
c906108c SS |
843 | && cs->c_secnum == N_DEBUG) |
844 | complete_symtab (filestring, 0, 0); | |
845 | ||
846 | /* Typedefs should not be treated as symbol definitions. */ | |
847 | if (ISFCN (cs->c_type) && cs->c_sclass != C_TPDEF) | |
848 | { | |
aff410f1 MS |
849 | /* Record all functions -- external and static -- in |
850 | minsyms. */ | |
fbcebcb1 | 851 | int section = cs_to_section (cs, objfile); |
c5504eaf | 852 | |
2273f0ac | 853 | tmpaddr = cs->c_value; |
156f2366 EZ |
854 | /* Don't record unresolved symbols. */ |
855 | if (!(cs->c_secnum <= 0 && cs->c_value == 0)) | |
856 | record_minimal_symbol (reader, cs, tmpaddr, mst_text, | |
857 | section, objfile); | |
c906108c SS |
858 | |
859 | fcn_line_ptr = main_aux.x_sym.x_fcnary.x_fcn.x_lnnoptr; | |
860 | fcn_start_addr = tmpaddr; | |
861 | fcn_cs_saved = *cs; | |
862 | fcn_sym_saved = main_sym; | |
863 | fcn_aux_saved = main_aux; | |
864 | continue; | |
865 | } | |
866 | ||
867 | switch (cs->c_sclass) | |
868 | { | |
c5aa993b JM |
869 | case C_EFCN: |
870 | case C_EXTDEF: | |
871 | case C_ULABEL: | |
872 | case C_USTATIC: | |
873 | case C_LINE: | |
874 | case C_ALIAS: | |
875 | case C_HIDDEN: | |
b98664d3 | 876 | complaint (_("Bad n_sclass for symbol %s"), |
23136709 | 877 | cs->c_name); |
c5aa993b | 878 | break; |
c906108c | 879 | |
c5aa993b | 880 | case C_FILE: |
aff410f1 MS |
881 | /* c_value field contains symnum of next .file entry in |
882 | table or symnum of first global after last .file. */ | |
c5aa993b JM |
883 | next_file_symnum = cs->c_value; |
884 | if (cs->c_naux > 0) | |
885 | filestring = coff_getfilename (&main_aux); | |
886 | else | |
887 | filestring = ""; | |
888 | ||
889 | /* Complete symbol table for last object file | |
890 | containing debugging information. */ | |
46212e0b | 891 | if (get_last_source_file ()) |
c5aa993b JM |
892 | { |
893 | coff_end_symtab (objfile); | |
4d663531 | 894 | coff_start_symtab (objfile, filestring); |
c5aa993b JM |
895 | } |
896 | in_source_file = 1; | |
897 | break; | |
c906108c | 898 | |
aff410f1 MS |
899 | /* C_LABEL is used for labels and static functions. |
900 | Including it here allows gdb to see static functions when | |
901 | no debug info is available. */ | |
c5aa993b | 902 | case C_LABEL: |
aff410f1 MS |
903 | /* However, labels within a function can make weird |
904 | backtraces, so filter them out (from phdm@macqel.be). */ | |
c5aa993b JM |
905 | if (within_function) |
906 | break; | |
565e0eda | 907 | /* Fall through. */ |
c5aa993b JM |
908 | case C_STAT: |
909 | case C_THUMBLABEL: | |
910 | case C_THUMBSTAT: | |
911 | case C_THUMBSTATFUNC: | |
912 | if (cs->c_name[0] == '.') | |
913 | { | |
7ecb6532 | 914 | if (strcmp (cs->c_name, ".text") == 0) |
c5aa993b | 915 | { |
aff410f1 MS |
916 | /* FIXME: don't wire in ".text" as section name or |
917 | symbol name! */ | |
918 | /* Check for in_source_file deals with case of a | |
919 | file with debugging symbols followed by a later | |
920 | file with no symbols. */ | |
c906108c SS |
921 | if (in_source_file) |
922 | complete_symtab (filestring, | |
aff410f1 MS |
923 | cs->c_value + ANOFFSET (objfile->section_offsets, |
924 | SECT_OFF_TEXT (objfile)), | |
c906108c SS |
925 | main_aux.x_scn.x_scnlen); |
926 | in_source_file = 0; | |
927 | } | |
aff410f1 | 928 | /* Flush rest of '.' symbols. */ |
c906108c | 929 | break; |
c5aa993b JM |
930 | } |
931 | else if (!SDB_TYPE (cs->c_type) | |
932 | && cs->c_name[0] == 'L' | |
61012eef GB |
933 | && (startswith (cs->c_name, "LI%") |
934 | || startswith (cs->c_name, "LF%") | |
935 | || startswith (cs->c_name, "LC%") | |
936 | || startswith (cs->c_name, "LP%") | |
937 | || startswith (cs->c_name, "LPB%") | |
938 | || startswith (cs->c_name, "LBB%") | |
939 | || startswith (cs->c_name, "LBE%") | |
940 | || startswith (cs->c_name, "LPBX%"))) | |
c5aa993b JM |
941 | /* At least on a 3b1, gcc generates swbeg and string labels |
942 | that look like this. Ignore them. */ | |
943 | break; | |
86a73007 TT |
944 | /* For static symbols that don't start with '.'... */ |
945 | /* Fall through. */ | |
c5aa993b JM |
946 | case C_THUMBEXT: |
947 | case C_THUMBEXTFUNC: | |
948 | case C_EXT: | |
949 | { | |
950 | /* Record it in the minimal symbols regardless of | |
951 | SDB_TYPE. This parallels what we do for other debug | |
952 | formats, and probably is needed to make | |
953 | print_address_symbolic work right without the (now | |
954 | gone) "set fast-symbolic-addr off" kludge. */ | |
c906108c | 955 | |
c5aa993b JM |
956 | enum minimal_symbol_type ms_type; |
957 | int sec; | |
2273f0ac | 958 | CORE_ADDR offset = 0; |
c906108c | 959 | |
c5aa993b JM |
960 | if (cs->c_secnum == N_UNDEF) |
961 | { | |
d4862372 JB |
962 | /* This is a common symbol. We used to rely on |
963 | the target to tell us whether it knows where | |
964 | the symbol has been relocated to, but none of | |
965 | the target implementations actually provided | |
966 | that operation. So we just ignore the symbol, | |
967 | the same way we would do if we had a target-side | |
968 | symbol lookup which returned no match. */ | |
969 | break; | |
c5aa993b | 970 | } |
182d43bc EZ |
971 | else if (cs->c_secnum == N_ABS) |
972 | { | |
973 | /* Use the correct minimal symbol type (and don't | |
aff410f1 | 974 | relocate) for absolute values. */ |
182d43bc EZ |
975 | ms_type = mst_abs; |
976 | sec = cs_to_section (cs, objfile); | |
977 | tmpaddr = cs->c_value; | |
978 | } | |
c5aa993b JM |
979 | else |
980 | { | |
05cfdb42 | 981 | asection *bfd_section = cs_to_bfd_section (cs, objfile); |
c5504eaf | 982 | |
c5aa993b JM |
983 | sec = cs_to_section (cs, objfile); |
984 | tmpaddr = cs->c_value; | |
aff410f1 | 985 | /* Statics in a PE file also get relocated. */ |
182d43bc EZ |
986 | if (cs->c_sclass == C_EXT |
987 | || cs->c_sclass == C_THUMBEXTFUNC | |
988 | || cs->c_sclass == C_THUMBEXT | |
989 | || (pe_file && (cs->c_sclass == C_STAT))) | |
2273f0ac | 990 | offset = ANOFFSET (objfile->section_offsets, sec); |
c906108c | 991 | |
05cfdb42 | 992 | if (bfd_section->flags & SEC_CODE) |
c5aa993b | 993 | { |
c5aa993b JM |
994 | ms_type = |
995 | cs->c_sclass == C_EXT || cs->c_sclass == C_THUMBEXTFUNC | |
996 | || cs->c_sclass == C_THUMBEXT ? | |
997 | mst_text : mst_file_text; | |
85ddcc70 | 998 | tmpaddr = gdbarch_addr_bits_remove (gdbarch, tmpaddr); |
b8fbeb18 | 999 | } |
05cfdb42 DJ |
1000 | else if (bfd_section->flags & SEC_ALLOC |
1001 | && bfd_section->flags & SEC_LOAD) | |
34e924c0 | 1002 | { |
c5aa993b | 1003 | ms_type = |
aff410f1 MS |
1004 | cs->c_sclass == C_EXT || cs->c_sclass == C_THUMBEXT |
1005 | ? mst_data : mst_file_data; | |
34e924c0 | 1006 | } |
05cfdb42 | 1007 | else if (bfd_section->flags & SEC_ALLOC) |
34e924c0 | 1008 | { |
c5aa993b | 1009 | ms_type = |
aff410f1 MS |
1010 | cs->c_sclass == C_EXT || cs->c_sclass == C_THUMBEXT |
1011 | ? mst_bss : mst_file_bss; | |
34e924c0 EZ |
1012 | } |
1013 | else | |
1014 | ms_type = mst_unknown; | |
c5aa993b | 1015 | } |
c906108c | 1016 | |
8dddcb8f | 1017 | msym = record_minimal_symbol (reader, cs, tmpaddr, ms_type, |
aff410f1 | 1018 | sec, objfile); |
05cfdb42 | 1019 | if (msym) |
aff410f1 MS |
1020 | gdbarch_coff_make_msymbol_special (gdbarch, |
1021 | cs->c_sclass, msym); | |
fbcebcb1 | 1022 | |
c5aa993b JM |
1023 | if (SDB_TYPE (cs->c_type)) |
1024 | { | |
1025 | struct symbol *sym; | |
c5504eaf | 1026 | |
c5aa993b | 1027 | sym = process_coff_symbol |
96baa820 | 1028 | (cs, &main_aux, objfile); |
2273f0ac | 1029 | SYMBOL_VALUE (sym) = tmpaddr + offset; |
c5aa993b JM |
1030 | SYMBOL_SECTION (sym) = sec; |
1031 | } | |
1032 | } | |
1033 | break; | |
1034 | ||
1035 | case C_FCN: | |
7ecb6532 | 1036 | if (strcmp (cs->c_name, ".bf") == 0) |
c5aa993b JM |
1037 | { |
1038 | within_function = 1; | |
1039 | ||
aff410f1 MS |
1040 | /* Value contains address of first non-init type |
1041 | code. */ | |
c5aa993b | 1042 | /* main_aux.x_sym.x_misc.x_lnsz.x_lnno |
aff410f1 | 1043 | contains line number of '{' }. */ |
c5aa993b | 1044 | if (cs->c_naux != 1) |
b98664d3 | 1045 | complaint (_("`.bf' symbol %d has no aux entry"), |
aff410f1 | 1046 | cs->c_symnum); |
c5aa993b JM |
1047 | fcn_first_line = main_aux.x_sym.x_misc.x_lnsz.x_lnno; |
1048 | fcn_first_line_addr = cs->c_value; | |
1049 | ||
1050 | /* Might want to check that locals are 0 and | |
1051 | context_stack_depth is zero, and complain if not. */ | |
1052 | ||
1053 | depth = 0; | |
fe978cb0 | 1054 | newobj = push_context (depth, fcn_start_addr); |
c5aa993b | 1055 | fcn_cs_saved.c_name = getsymname (&fcn_sym_saved); |
fe978cb0 | 1056 | newobj->name = |
aff410f1 MS |
1057 | process_coff_symbol (&fcn_cs_saved, |
1058 | &fcn_aux_saved, objfile); | |
c5aa993b | 1059 | } |
7ecb6532 | 1060 | else if (strcmp (cs->c_name, ".ef") == 0) |
c5aa993b | 1061 | { |
b9179dbc | 1062 | if (!within_function) |
8a3fe4f8 | 1063 | error (_("Bad coff function information.")); |
aff410f1 | 1064 | /* The value of .ef is the address of epilogue code; |
c5aa993b JM |
1065 | not useful for gdb. */ |
1066 | /* { main_aux.x_sym.x_misc.x_lnsz.x_lnno | |
1067 | contains number of lines to '}' */ | |
1068 | ||
edb0470b | 1069 | if (outermost_context_p ()) |
aff410f1 | 1070 | { /* We attempted to pop an empty context stack. */ |
b98664d3 | 1071 | complaint (_("`.ef' symbol without matching `.bf' " |
3e43a32a | 1072 | "symbol ignored starting at symnum %d"), |
23136709 | 1073 | cs->c_symnum); |
c5aa993b JM |
1074 | within_function = 0; |
1075 | break; | |
c906108c | 1076 | } |
c5aa993b | 1077 | |
a60f3166 | 1078 | struct context_stack cstk = pop_context (); |
c5aa993b | 1079 | /* Stack must be empty now. */ |
edb0470b | 1080 | if (!outermost_context_p () || newobj == NULL) |
c906108c | 1081 | { |
b98664d3 | 1082 | complaint (_("Unmatched .ef symbol(s) ignored " |
3e43a32a | 1083 | "starting at symnum %d"), |
23136709 | 1084 | cs->c_symnum); |
c5aa993b JM |
1085 | within_function = 0; |
1086 | break; | |
c906108c | 1087 | } |
c5aa993b JM |
1088 | if (cs->c_naux != 1) |
1089 | { | |
b98664d3 | 1090 | complaint (_("`.ef' symbol %d has no aux entry"), |
aff410f1 | 1091 | cs->c_symnum); |
c5aa993b JM |
1092 | fcn_last_line = 0x7FFFFFFF; |
1093 | } | |
1094 | else | |
1095 | { | |
1096 | fcn_last_line = main_aux.x_sym.x_misc.x_lnsz.x_lnno; | |
1097 | } | |
1098 | /* fcn_first_line is the line number of the opening '{'. | |
1099 | Do not record it - because it would affect gdb's idea | |
aff410f1 MS |
1100 | of the line number of the first statement of the |
1101 | function - except for one-line functions, for which | |
1102 | it is also the line number of all the statements and | |
1103 | of the closing '}', and for which we do not have any | |
1104 | other statement-line-number. */ | |
c5aa993b | 1105 | if (fcn_last_line == 1) |
3c65e5b3 | 1106 | record_line (get_current_subfile (), fcn_first_line, |
fbf65064 UW |
1107 | gdbarch_addr_bits_remove (gdbarch, |
1108 | fcn_first_line_addr)); | |
c5aa993b | 1109 | else |
aff410f1 MS |
1110 | enter_linenos (fcn_line_ptr, fcn_first_line, |
1111 | fcn_last_line, objfile); | |
c906108c | 1112 | |
c233e9c6 | 1113 | finish_block (cstk.name, cstk.old_blocks, |
a60f3166 | 1114 | NULL, cstk.start_addr, |
c5aa993b JM |
1115 | fcn_cs_saved.c_value |
1116 | + fcn_aux_saved.x_sym.x_misc.x_fsize | |
aff410f1 | 1117 | + ANOFFSET (objfile->section_offsets, |
4d663531 | 1118 | SECT_OFF_TEXT (objfile))); |
c5aa993b JM |
1119 | within_function = 0; |
1120 | } | |
1121 | break; | |
c906108c | 1122 | |
c5aa993b | 1123 | case C_BLOCK: |
7ecb6532 | 1124 | if (strcmp (cs->c_name, ".bb") == 0) |
c5aa993b JM |
1125 | { |
1126 | tmpaddr = cs->c_value; | |
aff410f1 MS |
1127 | tmpaddr += ANOFFSET (objfile->section_offsets, |
1128 | SECT_OFF_TEXT (objfile)); | |
c5aa993b JM |
1129 | push_context (++depth, tmpaddr); |
1130 | } | |
7ecb6532 | 1131 | else if (strcmp (cs->c_name, ".eb") == 0) |
c5aa993b | 1132 | { |
edb0470b | 1133 | if (outermost_context_p ()) |
0963b4bd | 1134 | { /* We attempted to pop an empty context stack. */ |
b98664d3 | 1135 | complaint (_("`.eb' symbol without matching `.bb' " |
3e43a32a | 1136 | "symbol ignored starting at symnum %d"), |
23136709 | 1137 | cs->c_symnum); |
c5aa993b JM |
1138 | break; |
1139 | } | |
c906108c | 1140 | |
a60f3166 TT |
1141 | struct context_stack cstk = pop_context (); |
1142 | if (depth-- != cstk.depth) | |
c5aa993b | 1143 | { |
b98664d3 | 1144 | complaint (_("Mismatched .eb symbol ignored " |
3e43a32a | 1145 | "starting at symnum %d"), |
23136709 | 1146 | symnum); |
c5aa993b JM |
1147 | break; |
1148 | } | |
e148f09d | 1149 | if (*get_local_symbols () && !outermost_context_p ()) |
c5aa993b JM |
1150 | { |
1151 | tmpaddr = | |
aff410f1 MS |
1152 | cs->c_value + ANOFFSET (objfile->section_offsets, |
1153 | SECT_OFF_TEXT (objfile)); | |
c5aa993b | 1154 | /* Make a block for the local symbols within. */ |
c233e9c6 | 1155 | finish_block (0, cstk.old_blocks, NULL, |
a60f3166 | 1156 | cstk.start_addr, tmpaddr); |
c5aa993b JM |
1157 | } |
1158 | /* Now pop locals of block just finished. */ | |
e148f09d | 1159 | *get_local_symbols () = cstk.locals; |
c5aa993b JM |
1160 | } |
1161 | break; | |
c906108c | 1162 | |
c5aa993b | 1163 | default: |
96baa820 | 1164 | process_coff_symbol (cs, &main_aux, objfile); |
c5aa993b | 1165 | break; |
c906108c SS |
1166 | } |
1167 | } | |
1168 | ||
1b6bc7e0 CF |
1169 | if ((nsyms == 0) && (pe_file)) |
1170 | { | |
c2f20dd6 | 1171 | /* We've got no debugging symbols, but it's a portable |
aff410f1 | 1172 | executable, so try to read the export table. */ |
8dddcb8f | 1173 | read_pe_exported_syms (reader, objfile); |
1b6bc7e0 CF |
1174 | } |
1175 | ||
46212e0b | 1176 | if (get_last_source_file ()) |
c906108c SS |
1177 | coff_end_symtab (objfile); |
1178 | ||
1179 | /* Patch up any opaque types (references to types that are not defined | |
1180 | in the file where they are referenced, e.g. "struct foo *bar"). */ | |
43f3e411 | 1181 | { |
b669c953 | 1182 | for (compunit_symtab *cu : objfile->compunits ()) |
d5da8b3c TT |
1183 | { |
1184 | for (symtab *s : compunit_filetabs (cu)) | |
1185 | patch_opaque_types (s); | |
1186 | } | |
43f3e411 | 1187 | } |
c906108c | 1188 | |
dd707e8e | 1189 | coffread_objfile = NULL; |
c906108c SS |
1190 | } |
1191 | \f | |
1192 | /* Routines for reading headers and symbols from executable. */ | |
1193 | ||
aff410f1 MS |
1194 | /* Read the next symbol, swap it, and return it in both |
1195 | internal_syment form, and coff_symbol form. Also return its first | |
1196 | auxent, if any, in internal_auxent form, and skip any other | |
1197 | auxents. */ | |
c906108c SS |
1198 | |
1199 | static void | |
aa1ee363 AC |
1200 | read_one_sym (struct coff_symbol *cs, |
1201 | struct internal_syment *sym, | |
1202 | union internal_auxent *aux) | |
c906108c SS |
1203 | { |
1204 | int i; | |
3b016d57 | 1205 | bfd_size_type bytes; |
c906108c SS |
1206 | |
1207 | cs->c_symnum = symnum; | |
3b016d57 DJ |
1208 | bytes = bfd_bread (temp_sym, local_symesz, nlist_bfd_global); |
1209 | if (bytes != local_symesz) | |
4262abfb | 1210 | error (_("%s: error reading symbols"), objfile_name (coffread_objfile)); |
c5aa993b | 1211 | bfd_coff_swap_sym_in (symfile_bfd, temp_sym, (char *) sym); |
c906108c SS |
1212 | cs->c_naux = sym->n_numaux & 0xff; |
1213 | if (cs->c_naux >= 1) | |
1214 | { | |
3b016d57 DJ |
1215 | bytes = bfd_bread (temp_aux, local_auxesz, nlist_bfd_global); |
1216 | if (bytes != local_auxesz) | |
4262abfb | 1217 | error (_("%s: error reading symbols"), objfile_name (coffread_objfile)); |
aff410f1 MS |
1218 | bfd_coff_swap_aux_in (symfile_bfd, temp_aux, |
1219 | sym->n_type, sym->n_sclass, | |
c5aa993b JM |
1220 | 0, cs->c_naux, (char *) aux); |
1221 | /* If more than one aux entry, read past it (only the first aux | |
aff410f1 | 1222 | is important). */ |
c5aa993b | 1223 | for (i = 1; i < cs->c_naux; i++) |
3b016d57 DJ |
1224 | { |
1225 | bytes = bfd_bread (temp_aux, local_auxesz, nlist_bfd_global); | |
1226 | if (bytes != local_auxesz) | |
4262abfb JK |
1227 | error (_("%s: error reading symbols"), |
1228 | objfile_name (coffread_objfile)); | |
3b016d57 | 1229 | } |
c906108c SS |
1230 | } |
1231 | cs->c_name = getsymname (sym); | |
1232 | cs->c_value = sym->n_value; | |
1233 | cs->c_sclass = (sym->n_sclass & 0xff); | |
1234 | cs->c_secnum = sym->n_scnum; | |
1235 | cs->c_type = (unsigned) sym->n_type; | |
1236 | if (!SDB_TYPE (cs->c_type)) | |
1237 | cs->c_type = 0; | |
1238 | ||
1239 | #if 0 | |
1240 | if (cs->c_sclass & 128) | |
3d263c1d | 1241 | printf (_("thumb symbol %s, class 0x%x\n"), cs->c_name, cs->c_sclass); |
c906108c SS |
1242 | #endif |
1243 | ||
1244 | symnum += 1 + cs->c_naux; | |
1245 | ||
1246 | /* The PE file format stores symbol values as offsets within the | |
1247 | section, rather than as absolute addresses. We correct that | |
1248 | here, if the symbol has an appropriate storage class. FIXME: We | |
1249 | should use BFD to read the symbols, rather than duplicating the | |
1250 | work here. */ | |
1251 | if (pe_file) | |
1252 | { | |
1253 | switch (cs->c_sclass) | |
1254 | { | |
1255 | case C_EXT: | |
1256 | case C_THUMBEXT: | |
1257 | case C_THUMBEXTFUNC: | |
1258 | case C_SECTION: | |
1259 | case C_NT_WEAK: | |
1260 | case C_STAT: | |
1261 | case C_THUMBSTAT: | |
1262 | case C_THUMBSTATFUNC: | |
1263 | case C_LABEL: | |
1264 | case C_THUMBLABEL: | |
1265 | case C_BLOCK: | |
1266 | case C_FCN: | |
1267 | case C_EFCN: | |
1268 | if (cs->c_secnum != 0) | |
1269 | cs->c_value += cs_section_address (cs, symfile_bfd); | |
1270 | break; | |
1271 | } | |
1272 | } | |
1273 | } | |
1274 | \f | |
aff410f1 | 1275 | /* Support for string table handling. */ |
c906108c | 1276 | |
c906108c | 1277 | static int |
e2a03548 | 1278 | init_stringtab (bfd *abfd, long offset, gdb::unique_xmalloc_ptr<char> *storage) |
c906108c SS |
1279 | { |
1280 | long length; | |
1281 | int val; | |
1282 | unsigned char lengthbuf[4]; | |
1283 | ||
c906108c | 1284 | /* If the file is stripped, the offset might be zero, indicating no |
aff410f1 | 1285 | string table. Just return with `stringtab' set to null. */ |
c906108c SS |
1286 | if (offset == 0) |
1287 | return 0; | |
1288 | ||
1289 | if (bfd_seek (abfd, offset, 0) < 0) | |
1290 | return -1; | |
1291 | ||
3a42e9d0 | 1292 | val = bfd_bread ((char *) lengthbuf, sizeof lengthbuf, abfd); |
c906108c | 1293 | length = bfd_h_get_32 (symfile_bfd, lengthbuf); |
c5aa993b | 1294 | |
c906108c | 1295 | /* If no string table is needed, then the file may end immediately |
aff410f1 | 1296 | after the symbols. Just return with `stringtab' set to null. */ |
c906108c SS |
1297 | if (val != sizeof lengthbuf || length < sizeof lengthbuf) |
1298 | return 0; | |
1299 | ||
e2a03548 TT |
1300 | storage->reset ((char *) xmalloc (length)); |
1301 | stringtab = storage->get (); | |
aff410f1 MS |
1302 | /* This is in target format (probably not very useful, and not |
1303 | currently used), not host format. */ | |
c906108c | 1304 | memcpy (stringtab, lengthbuf, sizeof lengthbuf); |
aff410f1 | 1305 | if (length == sizeof length) /* Empty table -- just the count. */ |
c906108c SS |
1306 | return 0; |
1307 | ||
aff410f1 MS |
1308 | val = bfd_bread (stringtab + sizeof lengthbuf, |
1309 | length - sizeof lengthbuf, abfd); | |
c906108c SS |
1310 | if (val != length - sizeof lengthbuf || stringtab[length - 1] != '\0') |
1311 | return -1; | |
1312 | ||
1313 | return 0; | |
1314 | } | |
1315 | ||
c906108c | 1316 | static char * |
fba45db2 | 1317 | getsymname (struct internal_syment *symbol_entry) |
c906108c | 1318 | { |
c5aa993b | 1319 | static char buffer[SYMNMLEN + 1]; |
c906108c SS |
1320 | char *result; |
1321 | ||
1322 | if (symbol_entry->_n._n_n._n_zeroes == 0) | |
1323 | { | |
1324 | /* FIXME: Probably should be detecting corrupt symbol files by | |
c5aa993b | 1325 | seeing whether offset points to within the stringtab. */ |
c906108c SS |
1326 | result = stringtab + symbol_entry->_n._n_n._n_offset; |
1327 | } | |
1328 | else | |
1329 | { | |
1330 | strncpy (buffer, symbol_entry->_n._n_name, SYMNMLEN); | |
1331 | buffer[SYMNMLEN] = '\0'; | |
1332 | result = buffer; | |
1333 | } | |
1334 | return result; | |
1335 | } | |
1336 | ||
aff410f1 MS |
1337 | /* Extract the file name from the aux entry of a C_FILE symbol. |
1338 | Return only the last component of the name. Result is in static | |
1339 | storage and is only good for temporary use. */ | |
c906108c | 1340 | |
9f37bbcc | 1341 | static const char * |
fba45db2 | 1342 | coff_getfilename (union internal_auxent *aux_entry) |
c906108c SS |
1343 | { |
1344 | static char buffer[BUFSIZ]; | |
9f37bbcc | 1345 | const char *result; |
c906108c SS |
1346 | |
1347 | if (aux_entry->x_file.x_n.x_zeroes == 0) | |
9e91a352 MS |
1348 | { |
1349 | if (strlen (stringtab + aux_entry->x_file.x_n.x_offset) >= BUFSIZ) | |
1350 | internal_error (__FILE__, __LINE__, _("coff file name too long")); | |
1351 | strcpy (buffer, stringtab + aux_entry->x_file.x_n.x_offset); | |
1352 | } | |
c906108c SS |
1353 | else |
1354 | { | |
1355 | strncpy (buffer, aux_entry->x_file.x_fname, FILNMLEN); | |
1356 | buffer[FILNMLEN] = '\0'; | |
1357 | } | |
1358 | result = buffer; | |
1359 | ||
1360 | /* FIXME: We should not be throwing away the information about what | |
1361 | directory. It should go into dirname of the symtab, or some such | |
1362 | place. */ | |
9f37bbcc | 1363 | result = lbasename (result); |
c906108c SS |
1364 | return (result); |
1365 | } | |
1366 | \f | |
1367 | /* Support for line number handling. */ | |
1368 | ||
c906108c SS |
1369 | /* Read in all the line numbers for fast lookups later. Leave them in |
1370 | external (unswapped) format in memory; we'll swap them as we enter | |
1371 | them into GDB's data structures. */ | |
c5aa993b | 1372 | |
c906108c | 1373 | static int |
e2a03548 TT |
1374 | init_lineno (bfd *abfd, long offset, int size, |
1375 | gdb::unique_xmalloc_ptr<char> *storage) | |
c906108c SS |
1376 | { |
1377 | int val; | |
1378 | ||
1379 | linetab_offset = offset; | |
1380 | linetab_size = size; | |
1381 | ||
c906108c SS |
1382 | if (size == 0) |
1383 | return 0; | |
1384 | ||
1385 | if (bfd_seek (abfd, offset, 0) < 0) | |
1386 | return -1; | |
c5aa993b | 1387 | |
aff410f1 | 1388 | /* Allocate the desired table, plus a sentinel. */ |
e2a03548 TT |
1389 | storage->reset ((char *) xmalloc (size + local_linesz)); |
1390 | linetab = storage->get (); | |
c906108c | 1391 | |
e2a03548 | 1392 | val = bfd_bread (storage->get (), size, abfd); |
c906108c SS |
1393 | if (val != size) |
1394 | return -1; | |
1395 | ||
aff410f1 | 1396 | /* Terminate it with an all-zero sentinel record. */ |
c906108c SS |
1397 | memset (linetab + size, 0, local_linesz); |
1398 | ||
1399 | return 0; | |
1400 | } | |
1401 | ||
c906108c SS |
1402 | #if !defined (L_LNNO32) |
1403 | #define L_LNNO32(lp) ((lp)->l_lnno) | |
1404 | #endif | |
1405 | ||
1406 | static void | |
aa1ee363 AC |
1407 | enter_linenos (long file_offset, int first_line, |
1408 | int last_line, struct objfile *objfile) | |
c906108c | 1409 | { |
fbf65064 | 1410 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
52f0bd74 | 1411 | char *rawptr; |
c906108c SS |
1412 | struct internal_lineno lptr; |
1413 | ||
1414 | if (!linetab) | |
c5aa993b | 1415 | return; |
c906108c SS |
1416 | if (file_offset < linetab_offset) |
1417 | { | |
b98664d3 | 1418 | complaint (_("Line number pointer %ld lower than start of line numbers"), |
23136709 | 1419 | file_offset); |
aff410f1 | 1420 | if (file_offset > linetab_size) /* Too big to be an offset? */ |
c906108c | 1421 | return; |
aff410f1 MS |
1422 | file_offset += linetab_offset; /* Try reading at that linetab |
1423 | offset. */ | |
c906108c | 1424 | } |
c5aa993b | 1425 | |
c906108c SS |
1426 | rawptr = &linetab[file_offset - linetab_offset]; |
1427 | ||
aff410f1 | 1428 | /* Skip first line entry for each function. */ |
c906108c | 1429 | rawptr += local_linesz; |
aff410f1 | 1430 | /* Line numbers start at one for the first line of the function. */ |
c906108c SS |
1431 | first_line--; |
1432 | ||
e6a8a7d2 EZ |
1433 | /* If the line number table is full (e.g. 64K lines in COFF debug |
1434 | info), the next function's L_LNNO32 might not be zero, so don't | |
1435 | overstep the table's end in any case. */ | |
1436 | while (rawptr <= &linetab[0] + linetab_size) | |
c5aa993b JM |
1437 | { |
1438 | bfd_coff_swap_lineno_in (symfile_bfd, rawptr, &lptr); | |
1439 | rawptr += local_linesz; | |
e6a8a7d2 | 1440 | /* The next function, or the sentinel, will have L_LNNO32 zero; |
aff410f1 | 1441 | we exit. */ |
c5aa993b | 1442 | if (L_LNNO32 (&lptr) && L_LNNO32 (&lptr) <= last_line) |
fbf65064 UW |
1443 | { |
1444 | CORE_ADDR addr = lptr.l_addr.l_paddr; | |
aff410f1 MS |
1445 | addr += ANOFFSET (objfile->section_offsets, |
1446 | SECT_OFF_TEXT (objfile)); | |
3c65e5b3 | 1447 | record_line (get_current_subfile (), |
aff410f1 | 1448 | first_line + L_LNNO32 (&lptr), |
fbf65064 UW |
1449 | gdbarch_addr_bits_remove (gdbarch, addr)); |
1450 | } | |
c5aa993b JM |
1451 | else |
1452 | break; | |
1453 | } | |
c906108c SS |
1454 | } |
1455 | \f | |
1456 | static void | |
fba45db2 | 1457 | patch_type (struct type *type, struct type *real_type) |
c906108c | 1458 | { |
52f0bd74 AC |
1459 | struct type *target = TYPE_TARGET_TYPE (type); |
1460 | struct type *real_target = TYPE_TARGET_TYPE (real_type); | |
c906108c SS |
1461 | int field_size = TYPE_NFIELDS (real_target) * sizeof (struct field); |
1462 | ||
1463 | TYPE_LENGTH (target) = TYPE_LENGTH (real_target); | |
1464 | TYPE_NFIELDS (target) = TYPE_NFIELDS (real_target); | |
aff410f1 MS |
1465 | TYPE_FIELDS (target) = (struct field *) TYPE_ALLOC (target, |
1466 | field_size); | |
c906108c | 1467 | |
aff410f1 MS |
1468 | memcpy (TYPE_FIELDS (target), |
1469 | TYPE_FIELDS (real_target), | |
1470 | field_size); | |
c906108c SS |
1471 | |
1472 | if (TYPE_NAME (real_target)) | |
1473 | { | |
0d5cff50 DE |
1474 | /* The previous copy of TYPE_NAME is allocated by |
1475 | process_coff_symbol. */ | |
c906108c | 1476 | if (TYPE_NAME (target)) |
0d5cff50 DE |
1477 | xfree ((char*) TYPE_NAME (target)); |
1478 | TYPE_NAME (target) = xstrdup (TYPE_NAME (real_target)); | |
c906108c SS |
1479 | } |
1480 | } | |
1481 | ||
1482 | /* Patch up all appropriate typedef symbols in the opaque_type_chains | |
aff410f1 MS |
1483 | so that they can be used to print out opaque data structures |
1484 | properly. */ | |
c906108c SS |
1485 | |
1486 | static void | |
fba45db2 | 1487 | patch_opaque_types (struct symtab *s) |
c906108c | 1488 | { |
582942f4 | 1489 | const struct block *b; |
8157b174 | 1490 | struct block_iterator iter; |
52f0bd74 | 1491 | struct symbol *real_sym; |
c5aa993b | 1492 | |
aff410f1 | 1493 | /* Go through the per-file symbols only. */ |
439247b6 | 1494 | b = BLOCKVECTOR_BLOCK (SYMTAB_BLOCKVECTOR (s), STATIC_BLOCK); |
de4f826b | 1495 | ALL_BLOCK_SYMBOLS (b, iter, real_sym) |
c906108c SS |
1496 | { |
1497 | /* Find completed typedefs to use to fix opaque ones. | |
c5aa993b JM |
1498 | Remove syms from the chain when their types are stored, |
1499 | but search the whole chain, as there may be several syms | |
1500 | from different files with the same name. */ | |
5aafa1cc PM |
1501 | if (SYMBOL_CLASS (real_sym) == LOC_TYPEDEF |
1502 | && SYMBOL_DOMAIN (real_sym) == VAR_DOMAIN | |
1503 | && TYPE_CODE (SYMBOL_TYPE (real_sym)) == TYPE_CODE_PTR | |
1504 | && TYPE_LENGTH (TYPE_TARGET_TYPE (SYMBOL_TYPE (real_sym))) != 0) | |
c906108c | 1505 | { |
0d5cff50 | 1506 | const char *name = SYMBOL_LINKAGE_NAME (real_sym); |
aa1ee363 AC |
1507 | int hash = hashname (name); |
1508 | struct symbol *sym, *prev; | |
c5aa993b | 1509 | |
c906108c SS |
1510 | prev = 0; |
1511 | for (sym = opaque_type_chain[hash]; sym;) | |
1512 | { | |
5aafa1cc PM |
1513 | if (name[0] == SYMBOL_LINKAGE_NAME (sym)[0] |
1514 | && strcmp (name + 1, SYMBOL_LINKAGE_NAME (sym) + 1) == 0) | |
c906108c SS |
1515 | { |
1516 | if (prev) | |
1517 | { | |
1518 | SYMBOL_VALUE_CHAIN (prev) = SYMBOL_VALUE_CHAIN (sym); | |
1519 | } | |
1520 | else | |
1521 | { | |
1522 | opaque_type_chain[hash] = SYMBOL_VALUE_CHAIN (sym); | |
1523 | } | |
c5aa993b | 1524 | |
c906108c | 1525 | patch_type (SYMBOL_TYPE (sym), SYMBOL_TYPE (real_sym)); |
c5aa993b | 1526 | |
c906108c SS |
1527 | if (prev) |
1528 | { | |
1529 | sym = SYMBOL_VALUE_CHAIN (prev); | |
1530 | } | |
1531 | else | |
1532 | { | |
1533 | sym = opaque_type_chain[hash]; | |
1534 | } | |
1535 | } | |
1536 | else | |
1537 | { | |
1538 | prev = sym; | |
1539 | sym = SYMBOL_VALUE_CHAIN (sym); | |
1540 | } | |
1541 | } | |
1542 | } | |
1543 | } | |
1544 | } | |
1545 | \f | |
768a979c UW |
1546 | static int |
1547 | coff_reg_to_regnum (struct symbol *sym, struct gdbarch *gdbarch) | |
1548 | { | |
1549 | return gdbarch_sdb_reg_to_regnum (gdbarch, SYMBOL_VALUE (sym)); | |
1550 | } | |
1551 | ||
1552 | static const struct symbol_register_ops coff_register_funcs = { | |
1553 | coff_reg_to_regnum | |
1554 | }; | |
1555 | ||
f1e6e072 TT |
1556 | /* The "aclass" index for computed COFF symbols. */ |
1557 | ||
1558 | static int coff_register_index; | |
1559 | ||
c906108c | 1560 | static struct symbol * |
aa1ee363 AC |
1561 | process_coff_symbol (struct coff_symbol *cs, |
1562 | union internal_auxent *aux, | |
fba45db2 | 1563 | struct objfile *objfile) |
c906108c | 1564 | { |
e623cf5d | 1565 | struct symbol *sym = allocate_symbol (objfile); |
c906108c SS |
1566 | char *name; |
1567 | ||
c906108c SS |
1568 | name = cs->c_name; |
1569 | name = EXTERNAL_NAME (name, objfile->obfd); | |
3c65e5b3 | 1570 | SYMBOL_SET_LANGUAGE (sym, get_current_subfile ()->language, |
f85f34ed | 1571 | &objfile->objfile_obstack); |
04a679b8 | 1572 | SYMBOL_SET_NAMES (sym, name, strlen (name), 1, objfile); |
c906108c SS |
1573 | |
1574 | /* default assumptions */ | |
1575 | SYMBOL_VALUE (sym) = cs->c_value; | |
176620f1 | 1576 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1577 | SYMBOL_SECTION (sym) = cs_to_section (cs, objfile); |
1578 | ||
1579 | if (ISFCN (cs->c_type)) | |
1580 | { | |
aff410f1 MS |
1581 | SYMBOL_VALUE (sym) += ANOFFSET (objfile->section_offsets, |
1582 | SECT_OFF_TEXT (objfile)); | |
c5aa993b | 1583 | SYMBOL_TYPE (sym) = |
aff410f1 MS |
1584 | lookup_function_type (decode_function_type (cs, cs->c_type, |
1585 | aux, objfile)); | |
c906108c | 1586 | |
f1e6e072 | 1587 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
c906108c SS |
1588 | if (cs->c_sclass == C_STAT || cs->c_sclass == C_THUMBSTAT |
1589 | || cs->c_sclass == C_THUMBSTATFUNC) | |
e148f09d | 1590 | add_symbol_to_list (sym, get_file_symbols ()); |
c906108c SS |
1591 | else if (cs->c_sclass == C_EXT || cs->c_sclass == C_THUMBEXT |
1592 | || cs->c_sclass == C_THUMBEXTFUNC) | |
e148f09d | 1593 | add_symbol_to_list (sym, get_global_symbols ()); |
c906108c SS |
1594 | } |
1595 | else | |
1596 | { | |
5e2b427d | 1597 | SYMBOL_TYPE (sym) = decode_type (cs, cs->c_type, aux, objfile); |
c906108c SS |
1598 | switch (cs->c_sclass) |
1599 | { | |
c5aa993b JM |
1600 | case C_NULL: |
1601 | break; | |
c906108c | 1602 | |
c5aa993b | 1603 | case C_AUTO: |
f1e6e072 | 1604 | SYMBOL_ACLASS_INDEX (sym) = LOC_LOCAL; |
e148f09d | 1605 | add_symbol_to_list (sym, get_local_symbols ()); |
c5aa993b | 1606 | break; |
c906108c | 1607 | |
c5aa993b JM |
1608 | case C_THUMBEXT: |
1609 | case C_THUMBEXTFUNC: | |
1610 | case C_EXT: | |
f1e6e072 | 1611 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
c5aa993b | 1612 | SYMBOL_VALUE_ADDRESS (sym) = (CORE_ADDR) cs->c_value; |
aff410f1 MS |
1613 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, |
1614 | SECT_OFF_TEXT (objfile)); | |
e148f09d | 1615 | add_symbol_to_list (sym, get_global_symbols ()); |
c5aa993b | 1616 | break; |
c906108c | 1617 | |
c5aa993b JM |
1618 | case C_THUMBSTAT: |
1619 | case C_THUMBSTATFUNC: | |
1620 | case C_STAT: | |
f1e6e072 | 1621 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
c5aa993b | 1622 | SYMBOL_VALUE_ADDRESS (sym) = (CORE_ADDR) cs->c_value; |
aff410f1 MS |
1623 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, |
1624 | SECT_OFF_TEXT (objfile)); | |
c5aa993b JM |
1625 | if (within_function) |
1626 | { | |
aff410f1 | 1627 | /* Static symbol of local scope. */ |
e148f09d | 1628 | add_symbol_to_list (sym, get_local_symbols ()); |
c906108c | 1629 | } |
c5aa993b JM |
1630 | else |
1631 | { | |
aff410f1 | 1632 | /* Static symbol at top level of file. */ |
e148f09d | 1633 | add_symbol_to_list (sym, get_file_symbols ()); |
c906108c | 1634 | } |
c5aa993b | 1635 | break; |
c906108c SS |
1636 | |
1637 | #ifdef C_GLBLREG /* AMD coff */ | |
c5aa993b | 1638 | case C_GLBLREG: |
c906108c | 1639 | #endif |
c5aa993b | 1640 | case C_REG: |
f1e6e072 | 1641 | SYMBOL_ACLASS_INDEX (sym) = coff_register_index; |
768a979c | 1642 | SYMBOL_VALUE (sym) = cs->c_value; |
e148f09d | 1643 | add_symbol_to_list (sym, get_local_symbols ()); |
c5aa993b | 1644 | break; |
c906108c | 1645 | |
c5aa993b JM |
1646 | case C_THUMBLABEL: |
1647 | case C_LABEL: | |
1648 | break; | |
c906108c | 1649 | |
c5aa993b | 1650 | case C_ARG: |
f1e6e072 | 1651 | SYMBOL_ACLASS_INDEX (sym) = LOC_ARG; |
2a2d4dc3 | 1652 | SYMBOL_IS_ARGUMENT (sym) = 1; |
e148f09d | 1653 | add_symbol_to_list (sym, get_local_symbols ()); |
c5aa993b | 1654 | break; |
c906108c | 1655 | |
c5aa993b | 1656 | case C_REGPARM: |
f1e6e072 | 1657 | SYMBOL_ACLASS_INDEX (sym) = coff_register_index; |
2a2d4dc3 | 1658 | SYMBOL_IS_ARGUMENT (sym) = 1; |
768a979c | 1659 | SYMBOL_VALUE (sym) = cs->c_value; |
e148f09d | 1660 | add_symbol_to_list (sym, get_local_symbols ()); |
c5aa993b | 1661 | break; |
c906108c | 1662 | |
c5aa993b | 1663 | case C_TPDEF: |
f1e6e072 | 1664 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 1665 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c5aa993b | 1666 | |
0963b4bd | 1667 | /* If type has no name, give it one. */ |
c5aa993b JM |
1668 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) |
1669 | { | |
1670 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_PTR | |
1671 | || TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_FUNC) | |
1672 | { | |
aff410f1 MS |
1673 | /* If we are giving a name to a type such as |
1674 | "pointer to foo" or "function returning foo", we | |
1675 | better not set the TYPE_NAME. If the program | |
1676 | contains "typedef char *caddr_t;", we don't want | |
1677 | all variables of type char * to print as caddr_t. | |
1678 | This is not just a consequence of GDB's type | |
1679 | management; CC and GCC (at least through version | |
1680 | 2.4) both output variables of either type char * | |
1681 | or caddr_t with the type refering to the C_TPDEF | |
1682 | symbol for caddr_t. If a future compiler cleans | |
1683 | this up it GDB is not ready for it yet, but if it | |
1684 | becomes ready we somehow need to disable this | |
1685 | check (without breaking the PCC/GCC2.4 case). | |
c5aa993b JM |
1686 | |
1687 | Sigh. | |
1688 | ||
1689 | Fortunately, this check seems not to be necessary | |
1690 | for anything except pointers or functions. */ | |
1691 | ; | |
1692 | } | |
1693 | else | |
1694 | TYPE_NAME (SYMBOL_TYPE (sym)) = | |
0d5cff50 | 1695 | xstrdup (SYMBOL_LINKAGE_NAME (sym)); |
c5aa993b | 1696 | } |
c906108c | 1697 | |
aff410f1 MS |
1698 | /* Keep track of any type which points to empty structured |
1699 | type, so it can be filled from a definition from another | |
1700 | file. A simple forward reference (TYPE_CODE_UNDEF) is | |
1701 | not an empty structured type, though; the forward | |
1702 | references work themselves out via the magic of | |
1703 | coff_lookup_type. */ | |
5aafa1cc PM |
1704 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_PTR |
1705 | && TYPE_LENGTH (TYPE_TARGET_TYPE (SYMBOL_TYPE (sym))) == 0 | |
1706 | && TYPE_CODE (TYPE_TARGET_TYPE (SYMBOL_TYPE (sym))) | |
1707 | != TYPE_CODE_UNDEF) | |
c5aa993b | 1708 | { |
3567439c | 1709 | int i = hashname (SYMBOL_LINKAGE_NAME (sym)); |
c906108c | 1710 | |
c5aa993b JM |
1711 | SYMBOL_VALUE_CHAIN (sym) = opaque_type_chain[i]; |
1712 | opaque_type_chain[i] = sym; | |
1713 | } | |
e148f09d | 1714 | add_symbol_to_list (sym, get_file_symbols ()); |
c5aa993b | 1715 | break; |
c906108c | 1716 | |
c5aa993b JM |
1717 | case C_STRTAG: |
1718 | case C_UNTAG: | |
1719 | case C_ENTAG: | |
f1e6e072 | 1720 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 1721 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c5aa993b JM |
1722 | |
1723 | /* Some compilers try to be helpful by inventing "fake" | |
1724 | names for anonymous enums, structures, and unions, like | |
aff410f1 | 1725 | "~0fake" or ".0fake". Thanks, but no thanks... */ |
e86ca25f | 1726 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) |
3567439c DJ |
1727 | if (SYMBOL_LINKAGE_NAME (sym) != NULL |
1728 | && *SYMBOL_LINKAGE_NAME (sym) != '~' | |
1729 | && *SYMBOL_LINKAGE_NAME (sym) != '.') | |
e86ca25f | 1730 | TYPE_NAME (SYMBOL_TYPE (sym)) = |
395f9c91 | 1731 | xstrdup (SYMBOL_LINKAGE_NAME (sym)); |
c5aa993b | 1732 | |
e148f09d | 1733 | add_symbol_to_list (sym, get_file_symbols ()); |
c5aa993b | 1734 | break; |
c906108c | 1735 | |
c5aa993b JM |
1736 | default: |
1737 | break; | |
c906108c SS |
1738 | } |
1739 | } | |
1740 | return sym; | |
1741 | } | |
1742 | \f | |
1743 | /* Decode a coff type specifier; return the type that is meant. */ | |
1744 | ||
1745 | static struct type * | |
aa1ee363 | 1746 | decode_type (struct coff_symbol *cs, unsigned int c_type, |
5e2b427d | 1747 | union internal_auxent *aux, struct objfile *objfile) |
c906108c | 1748 | { |
52f0bd74 | 1749 | struct type *type = 0; |
c906108c SS |
1750 | unsigned int new_c_type; |
1751 | ||
1752 | if (c_type & ~N_BTMASK) | |
1753 | { | |
1754 | new_c_type = DECREF (c_type); | |
1755 | if (ISPTR (c_type)) | |
1756 | { | |
5e2b427d | 1757 | type = decode_type (cs, new_c_type, aux, objfile); |
c906108c SS |
1758 | type = lookup_pointer_type (type); |
1759 | } | |
1760 | else if (ISFCN (c_type)) | |
1761 | { | |
5e2b427d | 1762 | type = decode_type (cs, new_c_type, aux, objfile); |
c906108c SS |
1763 | type = lookup_function_type (type); |
1764 | } | |
1765 | else if (ISARY (c_type)) | |
1766 | { | |
1767 | int i, n; | |
aa1ee363 | 1768 | unsigned short *dim; |
c906108c SS |
1769 | struct type *base_type, *index_type, *range_type; |
1770 | ||
1771 | /* Define an array type. */ | |
aff410f1 | 1772 | /* auxent refers to array, not base type. */ |
c906108c SS |
1773 | if (aux->x_sym.x_tagndx.l == 0) |
1774 | cs->c_naux = 0; | |
1775 | ||
aff410f1 | 1776 | /* Shift the indices down. */ |
c906108c SS |
1777 | dim = &aux->x_sym.x_fcnary.x_ary.x_dimen[0]; |
1778 | i = 1; | |
1779 | n = dim[0]; | |
1780 | for (i = 0; *dim && i < DIMNUM - 1; i++, dim++) | |
1781 | *dim = *(dim + 1); | |
1782 | *dim = 0; | |
1783 | ||
5e2b427d | 1784 | base_type = decode_type (cs, new_c_type, aux, objfile); |
46bf5051 | 1785 | index_type = objfile_type (objfile)->builtin_int; |
0c9c3474 | 1786 | range_type |
cafb3438 | 1787 | = create_static_range_type (NULL, index_type, 0, n - 1); |
c906108c | 1788 | type = |
cafb3438 | 1789 | create_array_type (NULL, base_type, range_type); |
c906108c SS |
1790 | } |
1791 | return type; | |
1792 | } | |
1793 | ||
aff410f1 MS |
1794 | /* Reference to existing type. This only occurs with the struct, |
1795 | union, and enum types. EPI a29k coff fakes us out by producing | |
1796 | aux entries with a nonzero x_tagndx for definitions of structs, | |
1797 | unions, and enums, so we have to check the c_sclass field. SCO | |
1798 | 3.2v4 cc gets confused with pointers to pointers to defined | |
1799 | structs, and generates negative x_tagndx fields. */ | |
c906108c SS |
1800 | if (cs->c_naux > 0 && aux->x_sym.x_tagndx.l != 0) |
1801 | { | |
1802 | if (cs->c_sclass != C_STRTAG | |
1803 | && cs->c_sclass != C_UNTAG | |
1804 | && cs->c_sclass != C_ENTAG | |
1805 | && aux->x_sym.x_tagndx.l >= 0) | |
1806 | { | |
1807 | type = coff_alloc_type (aux->x_sym.x_tagndx.l); | |
1808 | return type; | |
1809 | } | |
1810 | else | |
1811 | { | |
b98664d3 | 1812 | complaint (_("Symbol table entry for %s has bad tagndx value"), |
23136709 | 1813 | cs->c_name); |
aff410f1 | 1814 | /* And fall through to decode_base_type... */ |
c906108c SS |
1815 | } |
1816 | } | |
1817 | ||
5e2b427d | 1818 | return decode_base_type (cs, BTYPE (c_type), aux, objfile); |
c906108c SS |
1819 | } |
1820 | ||
1821 | /* Decode a coff type specifier for function definition; | |
1822 | return the type that the function returns. */ | |
1823 | ||
1824 | static struct type * | |
aff410f1 MS |
1825 | decode_function_type (struct coff_symbol *cs, |
1826 | unsigned int c_type, | |
1827 | union internal_auxent *aux, | |
1828 | struct objfile *objfile) | |
c906108c SS |
1829 | { |
1830 | if (aux->x_sym.x_tagndx.l == 0) | |
aff410f1 MS |
1831 | cs->c_naux = 0; /* auxent refers to function, not base |
1832 | type. */ | |
c906108c | 1833 | |
5e2b427d | 1834 | return decode_type (cs, DECREF (c_type), aux, objfile); |
c906108c SS |
1835 | } |
1836 | \f | |
aff410f1 | 1837 | /* Basic C types. */ |
c906108c SS |
1838 | |
1839 | static struct type * | |
aff410f1 MS |
1840 | decode_base_type (struct coff_symbol *cs, |
1841 | unsigned int c_type, | |
1842 | union internal_auxent *aux, | |
1843 | struct objfile *objfile) | |
c906108c | 1844 | { |
5e2b427d | 1845 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
1846 | struct type *type; |
1847 | ||
1848 | switch (c_type) | |
1849 | { | |
c5aa993b | 1850 | case T_NULL: |
aff410f1 | 1851 | /* Shows up with "void (*foo)();" structure members. */ |
46bf5051 | 1852 | return objfile_type (objfile)->builtin_void; |
c906108c | 1853 | |
c906108c | 1854 | #ifdef T_VOID |
c5aa993b JM |
1855 | case T_VOID: |
1856 | /* Intel 960 COFF has this symbol and meaning. */ | |
46bf5051 | 1857 | return objfile_type (objfile)->builtin_void; |
c906108c SS |
1858 | #endif |
1859 | ||
c5aa993b | 1860 | case T_CHAR: |
46bf5051 | 1861 | return objfile_type (objfile)->builtin_char; |
c906108c | 1862 | |
c5aa993b | 1863 | case T_SHORT: |
46bf5051 | 1864 | return objfile_type (objfile)->builtin_short; |
c906108c | 1865 | |
c5aa993b | 1866 | case T_INT: |
46bf5051 | 1867 | return objfile_type (objfile)->builtin_int; |
c906108c | 1868 | |
c5aa993b JM |
1869 | case T_LONG: |
1870 | if (cs->c_sclass == C_FIELD | |
9a76efb6 | 1871 | && aux->x_sym.x_misc.x_lnsz.x_size |
5e2b427d | 1872 | > gdbarch_long_bit (gdbarch)) |
46bf5051 | 1873 | return objfile_type (objfile)->builtin_long_long; |
c5aa993b | 1874 | else |
46bf5051 | 1875 | return objfile_type (objfile)->builtin_long; |
c906108c | 1876 | |
c5aa993b | 1877 | case T_FLOAT: |
46bf5051 | 1878 | return objfile_type (objfile)->builtin_float; |
c906108c | 1879 | |
c5aa993b | 1880 | case T_DOUBLE: |
46bf5051 | 1881 | return objfile_type (objfile)->builtin_double; |
c906108c | 1882 | |
c5aa993b | 1883 | case T_LNGDBL: |
46bf5051 | 1884 | return objfile_type (objfile)->builtin_long_double; |
c906108c | 1885 | |
c5aa993b JM |
1886 | case T_STRUCT: |
1887 | if (cs->c_naux != 1) | |
1888 | { | |
aff410f1 | 1889 | /* Anonymous structure type. */ |
c5aa993b JM |
1890 | type = coff_alloc_type (cs->c_symnum); |
1891 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
1892 | TYPE_NAME (type) = NULL; | |
c5aa993b JM |
1893 | INIT_CPLUS_SPECIFIC (type); |
1894 | TYPE_LENGTH (type) = 0; | |
1895 | TYPE_FIELDS (type) = 0; | |
1896 | TYPE_NFIELDS (type) = 0; | |
1897 | } | |
1898 | else | |
1899 | { | |
1900 | type = coff_read_struct_type (cs->c_symnum, | |
1901 | aux->x_sym.x_misc.x_lnsz.x_size, | |
5e2b427d UW |
1902 | aux->x_sym.x_fcnary.x_fcn.x_endndx.l, |
1903 | objfile); | |
c5aa993b JM |
1904 | } |
1905 | return type; | |
c906108c | 1906 | |
c5aa993b JM |
1907 | case T_UNION: |
1908 | if (cs->c_naux != 1) | |
1909 | { | |
aff410f1 | 1910 | /* Anonymous union type. */ |
c5aa993b JM |
1911 | type = coff_alloc_type (cs->c_symnum); |
1912 | TYPE_NAME (type) = NULL; | |
c5aa993b JM |
1913 | INIT_CPLUS_SPECIFIC (type); |
1914 | TYPE_LENGTH (type) = 0; | |
1915 | TYPE_FIELDS (type) = 0; | |
1916 | TYPE_NFIELDS (type) = 0; | |
1917 | } | |
1918 | else | |
1919 | { | |
1920 | type = coff_read_struct_type (cs->c_symnum, | |
c906108c | 1921 | aux->x_sym.x_misc.x_lnsz.x_size, |
5e2b427d UW |
1922 | aux->x_sym.x_fcnary.x_fcn.x_endndx.l, |
1923 | objfile); | |
c5aa993b JM |
1924 | } |
1925 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
1926 | return type; | |
c906108c | 1927 | |
c5aa993b JM |
1928 | case T_ENUM: |
1929 | if (cs->c_naux != 1) | |
1930 | { | |
aff410f1 | 1931 | /* Anonymous enum type. */ |
c5aa993b JM |
1932 | type = coff_alloc_type (cs->c_symnum); |
1933 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
1934 | TYPE_NAME (type) = NULL; | |
c5aa993b JM |
1935 | TYPE_LENGTH (type) = 0; |
1936 | TYPE_FIELDS (type) = 0; | |
1937 | TYPE_NFIELDS (type) = 0; | |
1938 | } | |
1939 | else | |
1940 | { | |
1941 | type = coff_read_enum_type (cs->c_symnum, | |
1942 | aux->x_sym.x_misc.x_lnsz.x_size, | |
5e2b427d UW |
1943 | aux->x_sym.x_fcnary.x_fcn.x_endndx.l, |
1944 | objfile); | |
c5aa993b JM |
1945 | } |
1946 | return type; | |
1947 | ||
1948 | case T_MOE: | |
aff410f1 | 1949 | /* Shouldn't show up here. */ |
c5aa993b | 1950 | break; |
c906108c | 1951 | |
c5aa993b | 1952 | case T_UCHAR: |
46bf5051 | 1953 | return objfile_type (objfile)->builtin_unsigned_char; |
c906108c | 1954 | |
c5aa993b | 1955 | case T_USHORT: |
46bf5051 | 1956 | return objfile_type (objfile)->builtin_unsigned_short; |
c906108c | 1957 | |
c5aa993b | 1958 | case T_UINT: |
46bf5051 | 1959 | return objfile_type (objfile)->builtin_unsigned_int; |
c906108c | 1960 | |
c5aa993b JM |
1961 | case T_ULONG: |
1962 | if (cs->c_sclass == C_FIELD | |
9a76efb6 | 1963 | && aux->x_sym.x_misc.x_lnsz.x_size |
5e2b427d | 1964 | > gdbarch_long_bit (gdbarch)) |
46bf5051 | 1965 | return objfile_type (objfile)->builtin_unsigned_long_long; |
c5aa993b | 1966 | else |
46bf5051 | 1967 | return objfile_type (objfile)->builtin_unsigned_long; |
c906108c | 1968 | } |
b98664d3 | 1969 | complaint (_("Unexpected type for symbol %s"), cs->c_name); |
46bf5051 | 1970 | return objfile_type (objfile)->builtin_void; |
c906108c SS |
1971 | } |
1972 | \f | |
1973 | /* This page contains subroutines of read_type. */ | |
1974 | ||
1975 | /* Read the description of a structure (or union type) and return an | |
1976 | object describing the type. */ | |
1977 | ||
1978 | static struct type * | |
5e2b427d UW |
1979 | coff_read_struct_type (int index, int length, int lastsym, |
1980 | struct objfile *objfile) | |
c906108c SS |
1981 | { |
1982 | struct nextfield | |
1983 | { | |
1984 | struct nextfield *next; | |
1985 | struct field field; | |
1986 | }; | |
1987 | ||
52f0bd74 AC |
1988 | struct type *type; |
1989 | struct nextfield *list = 0; | |
fe978cb0 | 1990 | struct nextfield *newobj; |
c906108c | 1991 | int nfields = 0; |
52f0bd74 | 1992 | int n; |
c906108c SS |
1993 | char *name; |
1994 | struct coff_symbol member_sym; | |
52f0bd74 | 1995 | struct coff_symbol *ms = &member_sym; |
c906108c SS |
1996 | struct internal_syment sub_sym; |
1997 | union internal_auxent sub_aux; | |
1998 | int done = 0; | |
1999 | ||
2000 | type = coff_alloc_type (index); | |
2001 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
c5aa993b | 2002 | INIT_CPLUS_SPECIFIC (type); |
c906108c SS |
2003 | TYPE_LENGTH (type) = length; |
2004 | ||
2005 | while (!done && symnum < lastsym && symnum < nlist_nsyms_global) | |
2006 | { | |
2007 | read_one_sym (ms, &sub_sym, &sub_aux); | |
2008 | name = ms->c_name; | |
5e2b427d | 2009 | name = EXTERNAL_NAME (name, objfile->obfd); |
c906108c SS |
2010 | |
2011 | switch (ms->c_sclass) | |
2012 | { | |
c5aa993b JM |
2013 | case C_MOS: |
2014 | case C_MOU: | |
2015 | ||
2016 | /* Get space to record the next field's data. */ | |
8d749320 | 2017 | newobj = XALLOCA (struct nextfield); |
fe978cb0 PA |
2018 | newobj->next = list; |
2019 | list = newobj; | |
c5aa993b JM |
2020 | |
2021 | /* Save the data. */ | |
224c3ddb SM |
2022 | list->field.name |
2023 | = (const char *) obstack_copy0 (&objfile->objfile_obstack, | |
10f0c4bb | 2024 | name, strlen (name)); |
aff410f1 MS |
2025 | FIELD_TYPE (list->field) = decode_type (ms, ms->c_type, |
2026 | &sub_aux, objfile); | |
d6a843b5 | 2027 | SET_FIELD_BITPOS (list->field, 8 * ms->c_value); |
c5aa993b JM |
2028 | FIELD_BITSIZE (list->field) = 0; |
2029 | nfields++; | |
2030 | break; | |
c906108c | 2031 | |
c5aa993b JM |
2032 | case C_FIELD: |
2033 | ||
2034 | /* Get space to record the next field's data. */ | |
8d749320 | 2035 | newobj = XALLOCA (struct nextfield); |
fe978cb0 PA |
2036 | newobj->next = list; |
2037 | list = newobj; | |
c5aa993b JM |
2038 | |
2039 | /* Save the data. */ | |
224c3ddb SM |
2040 | list->field.name |
2041 | = (const char *) obstack_copy0 (&objfile->objfile_obstack, | |
10f0c4bb | 2042 | name, strlen (name)); |
aff410f1 MS |
2043 | FIELD_TYPE (list->field) = decode_type (ms, ms->c_type, |
2044 | &sub_aux, objfile); | |
d6a843b5 | 2045 | SET_FIELD_BITPOS (list->field, ms->c_value); |
c5aa993b JM |
2046 | FIELD_BITSIZE (list->field) = sub_aux.x_sym.x_misc.x_lnsz.x_size; |
2047 | nfields++; | |
2048 | break; | |
c906108c | 2049 | |
c5aa993b JM |
2050 | case C_EOS: |
2051 | done = 1; | |
2052 | break; | |
c906108c SS |
2053 | } |
2054 | } | |
2055 | /* Now create the vector of fields, and record how big it is. */ | |
2056 | ||
2057 | TYPE_NFIELDS (type) = nfields; | |
2058 | TYPE_FIELDS (type) = (struct field *) | |
2059 | TYPE_ALLOC (type, sizeof (struct field) * nfields); | |
2060 | ||
2061 | /* Copy the saved-up fields into the field vector. */ | |
2062 | ||
2063 | for (n = nfields; list; list = list->next) | |
2064 | TYPE_FIELD (type, --n) = list->field; | |
2065 | ||
2066 | return type; | |
2067 | } | |
2068 | \f | |
2069 | /* Read a definition of an enumeration type, | |
2070 | and create and return a suitable type object. | |
2071 | Also defines the symbols that represent the values of the type. */ | |
2072 | ||
c906108c | 2073 | static struct type * |
5e2b427d UW |
2074 | coff_read_enum_type (int index, int length, int lastsym, |
2075 | struct objfile *objfile) | |
c906108c | 2076 | { |
5e2b427d | 2077 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
52f0bd74 AC |
2078 | struct symbol *sym; |
2079 | struct type *type; | |
c906108c SS |
2080 | int nsyms = 0; |
2081 | int done = 0; | |
2082 | struct pending **symlist; | |
2083 | struct coff_symbol member_sym; | |
52f0bd74 | 2084 | struct coff_symbol *ms = &member_sym; |
c906108c SS |
2085 | struct internal_syment sub_sym; |
2086 | union internal_auxent sub_aux; | |
2087 | struct pending *osyms, *syms; | |
2088 | int o_nsyms; | |
52f0bd74 | 2089 | int n; |
c906108c SS |
2090 | char *name; |
2091 | int unsigned_enum = 1; | |
2092 | ||
2093 | type = coff_alloc_type (index); | |
2094 | if (within_function) | |
e148f09d | 2095 | symlist = get_local_symbols (); |
c906108c | 2096 | else |
e148f09d | 2097 | symlist = get_file_symbols (); |
c906108c SS |
2098 | osyms = *symlist; |
2099 | o_nsyms = osyms ? osyms->nsyms : 0; | |
2100 | ||
2101 | while (!done && symnum < lastsym && symnum < nlist_nsyms_global) | |
2102 | { | |
2103 | read_one_sym (ms, &sub_sym, &sub_aux); | |
2104 | name = ms->c_name; | |
5e2b427d | 2105 | name = EXTERNAL_NAME (name, objfile->obfd); |
c906108c SS |
2106 | |
2107 | switch (ms->c_sclass) | |
2108 | { | |
c5aa993b | 2109 | case C_MOE: |
e623cf5d | 2110 | sym = allocate_symbol (objfile); |
c5aa993b | 2111 | |
224c3ddb SM |
2112 | name = (char *) obstack_copy0 (&objfile->objfile_obstack, name, |
2113 | strlen (name)); | |
2114 | SYMBOL_SET_LINKAGE_NAME (sym, name); | |
f1e6e072 | 2115 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
176620f1 | 2116 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c5aa993b JM |
2117 | SYMBOL_VALUE (sym) = ms->c_value; |
2118 | add_symbol_to_list (sym, symlist); | |
2119 | nsyms++; | |
2120 | break; | |
c906108c | 2121 | |
c5aa993b JM |
2122 | case C_EOS: |
2123 | /* Sometimes the linker (on 386/ix 2.0.2 at least) screws | |
2124 | up the count of how many symbols to read. So stop | |
2125 | on .eos. */ | |
2126 | done = 1; | |
2127 | break; | |
c906108c SS |
2128 | } |
2129 | } | |
2130 | ||
2131 | /* Now fill in the fields of the type-structure. */ | |
2132 | ||
2133 | if (length > 0) | |
2134 | TYPE_LENGTH (type) = length; | |
9a76efb6 | 2135 | else /* Assume ints. */ |
5e2b427d | 2136 | TYPE_LENGTH (type) = gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT; |
c906108c SS |
2137 | TYPE_CODE (type) = TYPE_CODE_ENUM; |
2138 | TYPE_NFIELDS (type) = nsyms; | |
2139 | TYPE_FIELDS (type) = (struct field *) | |
2140 | TYPE_ALLOC (type, sizeof (struct field) * nsyms); | |
2141 | ||
2142 | /* Find the symbols for the values and put them into the type. | |
2143 | The symbols can be found in the symlist that we put them on | |
2144 | to cause them to be defined. osyms contains the old value | |
2145 | of that symlist; everything up to there was defined by us. */ | |
2146 | /* Note that we preserve the order of the enum constants, so | |
2147 | that in something like "enum {FOO, LAST_THING=FOO}" we print | |
2148 | FOO, not LAST_THING. */ | |
2149 | ||
2150 | for (syms = *symlist, n = 0; syms; syms = syms->next) | |
2151 | { | |
2152 | int j = 0; | |
2153 | ||
2154 | if (syms == osyms) | |
2155 | j = o_nsyms; | |
c5aa993b | 2156 | for (; j < syms->nsyms; j++, n++) |
c906108c SS |
2157 | { |
2158 | struct symbol *xsym = syms->symbol[j]; | |
c5504eaf | 2159 | |
c906108c | 2160 | SYMBOL_TYPE (xsym) = type; |
3567439c | 2161 | TYPE_FIELD_NAME (type, n) = SYMBOL_LINKAGE_NAME (xsym); |
14e75d8e | 2162 | SET_FIELD_ENUMVAL (TYPE_FIELD (type, n), SYMBOL_VALUE (xsym)); |
c906108c SS |
2163 | if (SYMBOL_VALUE (xsym) < 0) |
2164 | unsigned_enum = 0; | |
2165 | TYPE_FIELD_BITSIZE (type, n) = 0; | |
2166 | } | |
2167 | if (syms == osyms) | |
2168 | break; | |
2169 | } | |
2170 | ||
2171 | if (unsigned_enum) | |
876cecd0 | 2172 | TYPE_UNSIGNED (type) = 1; |
c906108c SS |
2173 | |
2174 | return type; | |
2175 | } | |
2176 | ||
aff410f1 | 2177 | /* Register our ability to parse symbols for coff BFD files. */ |
c906108c | 2178 | |
00b5771c | 2179 | static const struct sym_fns coff_sym_fns = |
c906108c | 2180 | { |
aff410f1 MS |
2181 | coff_new_init, /* sym_new_init: init anything gbl to |
2182 | entire symtab */ | |
2183 | coff_symfile_init, /* sym_init: read initial info, setup | |
2184 | for sym_read() */ | |
2185 | coff_symfile_read, /* sym_read: read a symbol file into | |
2186 | symtab */ | |
b11896a5 | 2187 | NULL, /* sym_read_psymbols */ |
aff410f1 MS |
2188 | coff_symfile_finish, /* sym_finish: finished with file, |
2189 | cleanup */ | |
2190 | default_symfile_offsets, /* sym_offsets: xlate external to | |
2191 | internal form */ | |
2192 | default_symfile_segments, /* sym_segments: Get segment | |
2193 | information from a file */ | |
c295b2e5 | 2194 | NULL, /* sym_read_linetable */ |
aff410f1 MS |
2195 | |
2196 | default_symfile_relocate, /* sym_relocate: Relocate a debug | |
2197 | section. */ | |
55aa24fb | 2198 | NULL, /* sym_probe_fns */ |
00b5771c | 2199 | &psym_functions |
c906108c SS |
2200 | }; |
2201 | ||
2202 | void | |
fba45db2 | 2203 | _initialize_coffread (void) |
c906108c | 2204 | { |
c256e171 | 2205 | add_symtab_fns (bfd_target_coff_flavour, &coff_sym_fns); |
b8b98ad1 | 2206 | |
f1e6e072 TT |
2207 | coff_register_index |
2208 | = register_symbol_register_impl (LOC_REGISTER, &coff_register_funcs); | |
c906108c | 2209 | } |