Commit | Line | Data |
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c906108c | 1 | /* Read coff symbol tables and convert to internal format, for GDB. |
3666a048 | 2 | Copyright (C) 1987-2021 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" | |
70182375 | 39 | #include "dwarf2/public.h" |
4de283e4 TT |
40 | |
41 | #include "coff-pe-read.h" | |
42 | ||
43 | #include "psymtab.h" | |
44 | #include "build-id.h" | |
ccefe4c4 | 45 | |
91a81f69 TT |
46 | /* The objfile we are currently reading. */ |
47 | ||
dd707e8e | 48 | static struct objfile *coffread_objfile; |
91a81f69 | 49 | |
c5aa993b JM |
50 | struct coff_symfile_info |
51 | { | |
24699405 TT |
52 | file_ptr min_lineno_offset = 0; /* Where in file lowest line#s are. */ |
53 | file_ptr max_lineno_offset = 0; /* 1+last byte of line#s in file. */ | |
c906108c | 54 | |
24699405 TT |
55 | CORE_ADDR textaddr = 0; /* Addr of .text section. */ |
56 | unsigned int textsize = 0; /* Size of .text section. */ | |
e2a03548 | 57 | std::vector<asection *> *stabsects; /* .stab sections. */ |
24699405 TT |
58 | asection *stabstrsect = nullptr; /* Section pointer for .stab section. */ |
59 | char *stabstrdata = nullptr; | |
c5aa993b | 60 | }; |
c906108c | 61 | |
24699405 TT |
62 | /* Key for COFF-associated data. */ |
63 | ||
64 | static const struct objfile_key<coff_symfile_info> coff_objfile_data_key; | |
65 | ||
c906108c SS |
66 | /* Translate an external name string into a user-visible name. */ |
67 | #define EXTERNAL_NAME(string, abfd) \ | |
aff410f1 MS |
68 | (string[0] == bfd_get_symbol_leading_char (abfd) \ |
69 | ? string + 1 : string) | |
c906108c SS |
70 | |
71 | /* To be an sdb debug type, type must have at least a basic or primary | |
72 | derived type. Using this rather than checking against T_NULL is | |
73 | said to prevent core dumps if we try to operate on Michael Bloom | |
74 | dbx-in-coff file. */ | |
75 | ||
76 | #define SDB_TYPE(type) (BTYPE(type) | (type & N_TMASK)) | |
77 | ||
c906108c SS |
78 | /* Core address of start and end of text of current source file. |
79 | This comes from a ".text" symbol where x_nlinno > 0. */ | |
80 | ||
81 | static CORE_ADDR current_source_start_addr; | |
82 | static CORE_ADDR current_source_end_addr; | |
83 | ||
84 | /* The addresses of the symbol table stream and number of symbols | |
85 | of the object file we are reading (as copied into core). */ | |
86 | ||
87 | static bfd *nlist_bfd_global; | |
88 | static int nlist_nsyms_global; | |
89 | ||
c906108c | 90 | |
aff410f1 MS |
91 | /* Pointers to scratch storage, used for reading raw symbols and |
92 | auxents. */ | |
c906108c SS |
93 | |
94 | static char *temp_sym; | |
95 | static char *temp_aux; | |
96 | ||
97 | /* Local variables that hold the shift and mask values for the | |
98 | COFF file that we are currently reading. These come back to us | |
99 | from BFD, and are referenced by their macro names, as well as | |
100 | internally to the BTYPE, ISPTR, ISFCN, ISARY, ISTAG, and DECREF | |
101 | macros from include/coff/internal.h . */ | |
102 | ||
c5aa993b JM |
103 | static unsigned local_n_btmask; |
104 | static unsigned local_n_btshft; | |
105 | static unsigned local_n_tmask; | |
106 | static unsigned local_n_tshift; | |
c906108c SS |
107 | |
108 | #define N_BTMASK local_n_btmask | |
109 | #define N_BTSHFT local_n_btshft | |
110 | #define N_TMASK local_n_tmask | |
111 | #define N_TSHIFT local_n_tshift | |
c5aa993b | 112 | |
aff410f1 MS |
113 | /* Local variables that hold the sizes in the file of various COFF |
114 | structures. (We only need to know this to read them from the file | |
115 | -- BFD will then translate the data in them, into `internal_xxx' | |
116 | structs in the right byte order, alignment, etc.) */ | |
c906108c | 117 | |
c5aa993b JM |
118 | static unsigned local_linesz; |
119 | static unsigned local_symesz; | |
120 | static unsigned local_auxesz; | |
c906108c SS |
121 | |
122 | /* This is set if this is a PE format file. */ | |
123 | ||
124 | static int pe_file; | |
125 | ||
126 | /* Chain of typedefs of pointers to empty struct/union types. | |
127 | They are chained thru the SYMBOL_VALUE_CHAIN. */ | |
128 | ||
129 | static struct symbol *opaque_type_chain[HASHSIZE]; | |
130 | ||
aff410f1 | 131 | /* Simplified internal version of coff symbol table information. */ |
c906108c | 132 | |
c5aa993b JM |
133 | struct coff_symbol |
134 | { | |
135 | char *c_name; | |
aff410f1 MS |
136 | int c_symnum; /* Symbol number of this entry. */ |
137 | int c_naux; /* 0 if syment only, 1 if syment + | |
138 | auxent, etc. */ | |
5e8db398 | 139 | CORE_ADDR c_value; |
c5aa993b JM |
140 | int c_sclass; |
141 | int c_secnum; | |
142 | unsigned int c_type; | |
143 | }; | |
c906108c | 144 | |
fc474241 DE |
145 | /* Vector of types defined so far, indexed by their type numbers. */ |
146 | ||
147 | static struct type **type_vector; | |
148 | ||
149 | /* Number of elements allocated for type_vector currently. */ | |
150 | ||
151 | static int type_vector_length; | |
152 | ||
153 | /* Initial size of type vector. Is realloc'd larger if needed, and | |
154 | realloc'd down to the size actually used, when completed. */ | |
155 | ||
156 | #define INITIAL_TYPE_VECTOR_LENGTH 160 | |
157 | ||
e2a03548 | 158 | static char *linetab = NULL; |
a9e48095 JN |
159 | static file_ptr linetab_offset; |
160 | static file_ptr linetab_size; | |
e2a03548 TT |
161 | |
162 | static char *stringtab = NULL; | |
163 | ||
a14ed312 | 164 | extern void stabsread_clear_cache (void); |
7be570e7 | 165 | |
5e2b427d UW |
166 | static struct type *coff_read_struct_type (int, int, int, |
167 | struct objfile *); | |
c906108c | 168 | |
a14ed312 | 169 | static struct type *decode_base_type (struct coff_symbol *, |
aff410f1 MS |
170 | unsigned int, |
171 | union internal_auxent *, | |
5e2b427d | 172 | struct objfile *); |
c906108c | 173 | |
a14ed312 | 174 | static struct type *decode_type (struct coff_symbol *, unsigned int, |
5e2b427d UW |
175 | union internal_auxent *, |
176 | struct objfile *); | |
c906108c | 177 | |
a14ed312 KB |
178 | static struct type *decode_function_type (struct coff_symbol *, |
179 | unsigned int, | |
5e2b427d UW |
180 | union internal_auxent *, |
181 | struct objfile *); | |
c906108c | 182 | |
5e2b427d UW |
183 | static struct type *coff_read_enum_type (int, int, int, |
184 | struct objfile *); | |
c906108c | 185 | |
a14ed312 KB |
186 | static struct symbol *process_coff_symbol (struct coff_symbol *, |
187 | union internal_auxent *, | |
188 | struct objfile *); | |
c906108c | 189 | |
a14ed312 | 190 | static void patch_opaque_types (struct symtab *); |
c906108c | 191 | |
a9e48095 | 192 | static void enter_linenos (file_ptr, int, int, struct objfile *); |
c906108c | 193 | |
a9e48095 | 194 | static int init_lineno (bfd *, file_ptr, file_ptr, gdb::unique_xmalloc_ptr<char> *); |
c906108c | 195 | |
a14ed312 | 196 | static char *getsymname (struct internal_syment *); |
c906108c | 197 | |
9f37bbcc | 198 | static const char *coff_getfilename (union internal_auxent *); |
c906108c | 199 | |
a9e48095 | 200 | static int init_stringtab (bfd *, file_ptr, gdb::unique_xmalloc_ptr<char> *); |
c906108c | 201 | |
a14ed312 | 202 | static void read_one_sym (struct coff_symbol *, |
aff410f1 MS |
203 | struct internal_syment *, |
204 | union internal_auxent *); | |
c906108c | 205 | |
8dddcb8f | 206 | static void coff_symtab_read (minimal_symbol_reader &, |
a9e48095 JN |
207 | file_ptr, unsigned int, struct objfile *); |
208 | ||
c906108c SS |
209 | /* We are called once per section from coff_symfile_read. We |
210 | need to examine each section we are passed, check to see | |
211 | if it is something we are interested in processing, and | |
212 | if so, stash away some access information for the section. | |
213 | ||
214 | FIXME: The section names should not be hardwired strings (what | |
215 | should they be? I don't think most object file formats have enough | |
216 | section flags to specify what kind of debug section it is | |
217 | -kingdon). */ | |
218 | ||
219 | static void | |
12b9c64f | 220 | coff_locate_sections (bfd *abfd, asection *sectp, void *csip) |
c906108c | 221 | { |
52f0bd74 | 222 | struct coff_symfile_info *csi; |
c906108c SS |
223 | const char *name; |
224 | ||
225 | csi = (struct coff_symfile_info *) csip; | |
fd361982 | 226 | name = bfd_section_name (sectp); |
7ecb6532 | 227 | if (strcmp (name, ".text") == 0) |
c906108c | 228 | { |
fd361982 AM |
229 | csi->textaddr = bfd_section_vma (sectp); |
230 | csi->textsize += bfd_section_size (sectp); | |
c906108c | 231 | } |
61012eef | 232 | else if (startswith (name, ".text")) |
c906108c | 233 | { |
fd361982 | 234 | csi->textsize += bfd_section_size (sectp); |
c906108c | 235 | } |
7ecb6532 | 236 | else if (strcmp (name, ".stabstr") == 0) |
c906108c SS |
237 | { |
238 | csi->stabstrsect = sectp; | |
239 | } | |
61012eef | 240 | else if (startswith (name, ".stab")) |
c906108c SS |
241 | { |
242 | const char *s; | |
243 | ||
244 | /* We can have multiple .stab sections if linked with | |
dda83cd7 | 245 | --split-by-reloc. */ |
c906108c | 246 | for (s = name + sizeof ".stab" - 1; *s != '\0'; s++) |
c5aa993b | 247 | if (!isdigit (*s)) |
c906108c SS |
248 | break; |
249 | if (*s == '\0') | |
e2a03548 | 250 | csi->stabsects->push_back (sectp); |
c906108c SS |
251 | } |
252 | } | |
253 | ||
254 | /* Return the section_offsets* that CS points to. */ | |
a14ed312 | 255 | static int cs_to_section (struct coff_symbol *, struct objfile *); |
c906108c | 256 | |
c5aa993b JM |
257 | struct find_targ_sec_arg |
258 | { | |
259 | int targ_index; | |
260 | asection **resultp; | |
261 | }; | |
c906108c | 262 | |
c5aa993b | 263 | static void |
12b9c64f | 264 | find_targ_sec (bfd *abfd, asection *sect, void *obj) |
c906108c | 265 | { |
c5aa993b | 266 | struct find_targ_sec_arg *args = (struct find_targ_sec_arg *) obj; |
c5504eaf | 267 | |
c906108c SS |
268 | if (sect->target_index == args->targ_index) |
269 | *args->resultp = sect; | |
270 | } | |
271 | ||
fbcebcb1 DJ |
272 | /* Return the bfd_section that CS points to. */ |
273 | static struct bfd_section* | |
274 | cs_to_bfd_section (struct coff_symbol *cs, struct objfile *objfile) | |
c906108c SS |
275 | { |
276 | asection *sect = NULL; | |
277 | struct find_targ_sec_arg args; | |
c906108c SS |
278 | |
279 | args.targ_index = cs->c_secnum; | |
280 | args.resultp = § | |
281 | bfd_map_over_sections (objfile->obfd, find_targ_sec, &args); | |
fbcebcb1 DJ |
282 | return sect; |
283 | } | |
284 | ||
285 | /* Return the section number (SECT_OFF_*) that CS points to. */ | |
286 | static int | |
287 | cs_to_section (struct coff_symbol *cs, struct objfile *objfile) | |
288 | { | |
289 | asection *sect = cs_to_bfd_section (cs, objfile); | |
c5504eaf | 290 | |
05cfdb42 DJ |
291 | if (sect == NULL) |
292 | return SECT_OFF_TEXT (objfile); | |
65cf3563 | 293 | return gdb_bfd_section_index (objfile->obfd, sect); |
c906108c SS |
294 | } |
295 | ||
296 | /* Return the address of the section of a COFF symbol. */ | |
297 | ||
a14ed312 | 298 | static CORE_ADDR cs_section_address (struct coff_symbol *, bfd *); |
c906108c SS |
299 | |
300 | static CORE_ADDR | |
fba45db2 | 301 | cs_section_address (struct coff_symbol *cs, bfd *abfd) |
c906108c SS |
302 | { |
303 | asection *sect = NULL; | |
304 | struct find_targ_sec_arg args; | |
305 | CORE_ADDR addr = 0; | |
306 | ||
307 | args.targ_index = cs->c_secnum; | |
308 | args.resultp = § | |
309 | bfd_map_over_sections (abfd, find_targ_sec, &args); | |
310 | if (sect != NULL) | |
fd361982 | 311 | addr = bfd_section_vma (sect); |
c906108c SS |
312 | return addr; |
313 | } | |
314 | ||
315 | /* Look up a coff type-number index. Return the address of the slot | |
316 | where the type for that index is stored. | |
317 | The type-number is in INDEX. | |
318 | ||
319 | This can be used for finding the type associated with that index | |
320 | or for associating a new type with the index. */ | |
321 | ||
322 | static struct type ** | |
aa1ee363 | 323 | coff_lookup_type (int index) |
c906108c SS |
324 | { |
325 | if (index >= type_vector_length) | |
326 | { | |
327 | int old_vector_length = type_vector_length; | |
328 | ||
329 | type_vector_length *= 2; | |
c5aa993b | 330 | if (index /* is still */ >= type_vector_length) |
c906108c SS |
331 | type_vector_length = index * 2; |
332 | ||
333 | type_vector = (struct type **) | |
334 | xrealloc ((char *) type_vector, | |
335 | type_vector_length * sizeof (struct type *)); | |
336 | memset (&type_vector[old_vector_length], 0, | |
c5aa993b | 337 | (type_vector_length - old_vector_length) * sizeof (struct type *)); |
c906108c SS |
338 | } |
339 | return &type_vector[index]; | |
340 | } | |
341 | ||
342 | /* Make sure there is a type allocated for type number index | |
343 | and return the type object. | |
344 | This can create an empty (zeroed) type object. */ | |
345 | ||
346 | static struct type * | |
fba45db2 | 347 | coff_alloc_type (int index) |
c906108c | 348 | { |
52f0bd74 AC |
349 | struct type **type_addr = coff_lookup_type (index); |
350 | struct type *type = *type_addr; | |
c906108c SS |
351 | |
352 | /* If we are referring to a type not known at all yet, | |
353 | allocate an empty type for it. | |
354 | We will fill it in later if we find out how. */ | |
355 | if (type == NULL) | |
356 | { | |
dd707e8e | 357 | type = alloc_type (coffread_objfile); |
c906108c SS |
358 | *type_addr = type; |
359 | } | |
360 | return type; | |
361 | } | |
362 | \f | |
c906108c SS |
363 | /* Start a new symtab for a new source file. |
364 | This is called when a COFF ".file" symbol is seen; | |
365 | it indicates the start of data for one original source file. */ | |
366 | ||
367 | static void | |
4d663531 | 368 | coff_start_symtab (struct objfile *objfile, const char *name) |
c906108c | 369 | { |
5985ac61 | 370 | within_function = 0; |
4d663531 | 371 | start_symtab (objfile, |
827f438f | 372 | name, |
c5aa993b JM |
373 | /* We never know the directory name for COFF. */ |
374 | NULL, | |
2c99ee5c TT |
375 | /* The start address is irrelevant, since we call |
376 | set_last_source_start_addr in coff_end_symtab. */ | |
5ffa0793 PA |
377 | 0, |
378 | /* Let buildsym.c deduce the language for this symtab. */ | |
379 | language_unknown); | |
c906108c | 380 | record_debugformat ("COFF"); |
c906108c SS |
381 | } |
382 | ||
383 | /* Save the vital information from when starting to read a file, | |
384 | for use when closing off the current file. | |
aff410f1 MS |
385 | NAME is the file name the symbols came from, START_ADDR is the |
386 | first text address for the file, and SIZE is the number of bytes of | |
387 | text. */ | |
c906108c SS |
388 | |
389 | static void | |
9f37bbcc | 390 | complete_symtab (const char *name, CORE_ADDR start_addr, unsigned int size) |
c906108c | 391 | { |
46212e0b | 392 | set_last_source_file (name); |
c906108c SS |
393 | current_source_start_addr = start_addr; |
394 | current_source_end_addr = start_addr + size; | |
c906108c SS |
395 | } |
396 | ||
aff410f1 MS |
397 | /* Finish the symbol definitions for one main source file, close off |
398 | all the lexical contexts for that file (creating struct block's for | |
399 | them), then make the struct symtab for that file and put it in the | |
400 | list of all such. */ | |
c906108c SS |
401 | |
402 | static void | |
fba45db2 | 403 | coff_end_symtab (struct objfile *objfile) |
c906108c | 404 | { |
2c99ee5c | 405 | set_last_source_start_addr (current_source_start_addr); |
c906108c | 406 | |
4d663531 | 407 | end_symtab (current_source_end_addr, SECT_OFF_TEXT (objfile)); |
c906108c | 408 | |
aff410f1 | 409 | /* Reinitialize for beginning of new file. */ |
46212e0b | 410 | set_last_source_file (NULL); |
c906108c SS |
411 | } |
412 | \f | |
af312be7 JB |
413 | /* The linker sometimes generates some non-function symbols inside |
414 | functions referencing variables imported from another DLL. | |
415 | Return nonzero if the given symbol corresponds to one of them. */ | |
416 | ||
417 | static int | |
418 | is_import_fixup_symbol (struct coff_symbol *cs, | |
419 | enum minimal_symbol_type type) | |
420 | { | |
85102364 | 421 | /* The following is a bit of a heuristic using the characteristics |
af312be7 JB |
422 | of these fixup symbols, but should work well in practice... */ |
423 | int i; | |
424 | ||
425 | /* Must be a non-static text symbol. */ | |
426 | if (type != mst_text) | |
427 | return 0; | |
428 | ||
429 | /* Must be a non-function symbol. */ | |
430 | if (ISFCN (cs->c_type)) | |
431 | return 0; | |
432 | ||
433 | /* The name must start with "__fu<digits>__". */ | |
61012eef | 434 | if (!startswith (cs->c_name, "__fu")) |
af312be7 JB |
435 | return 0; |
436 | if (! isdigit (cs->c_name[4])) | |
437 | return 0; | |
438 | for (i = 5; cs->c_name[i] != '\0' && isdigit (cs->c_name[i]); i++) | |
439 | /* Nothing, just incrementing index past all digits. */; | |
440 | if (cs->c_name[i] != '_' || cs->c_name[i + 1] != '_') | |
441 | return 0; | |
442 | ||
443 | return 1; | |
444 | } | |
445 | ||
fbcebcb1 | 446 | static struct minimal_symbol * |
8dddcb8f TT |
447 | record_minimal_symbol (minimal_symbol_reader &reader, |
448 | struct coff_symbol *cs, CORE_ADDR address, | |
fbcebcb1 DJ |
449 | enum minimal_symbol_type type, int section, |
450 | struct objfile *objfile) | |
c906108c | 451 | { |
aff410f1 | 452 | /* We don't want TDESC entry points in the minimal symbol table. */ |
fbcebcb1 DJ |
453 | if (cs->c_name[0] == '@') |
454 | return NULL; | |
c906108c | 455 | |
af312be7 JB |
456 | if (is_import_fixup_symbol (cs, type)) |
457 | { | |
458 | /* Because the value of these symbols is within a function code | |
459 | range, these symbols interfere with the symbol-from-address | |
30baf67b | 460 | reverse lookup; this manifests itself in backtraces, or any |
af312be7 JB |
461 | other commands that prints symbolic addresses. Just pretend |
462 | these symbols do not exist. */ | |
463 | return NULL; | |
464 | } | |
465 | ||
31edb802 | 466 | return reader.record_full (cs->c_name, true, address, 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); | |
b16c44de | 541 | const char *filename = bfd_get_filename (abfd); |
52f0bd74 | 542 | int val; |
745b8ca0 | 543 | unsigned int num_symbols; |
a9e48095 JN |
544 | file_ptr symtab_offset; |
545 | file_ptr stringtab_offset; | |
546 | unsigned 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, |
dda83cd7 | 614 | info->max_lineno_offset - info->min_lineno_offset, |
e2a03548 | 615 | &linetab_storage); |
ebeb39fe | 616 | if (val < 0) |
dda83cd7 | 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 | { |
c9d95fa3 | 644 | const char *name = msym->linkage_name (); |
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 | ||
dda83cd7 | 663 | if (lead != '\0' && *name1 == lead) |
20d35291 PA |
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 |
dda83cd7 | 692 | bfd_get_section_contents? */ |
c906108c SS |
693 | bfd_seek (abfd, abfd->where, 0); |
694 | ||
fd361982 | 695 | stabstrsize = bfd_section_size (info->stabstrsect); |
c906108c SS |
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 | 710 | /* Try to add separate debug file if no symbols table found. */ |
a8ad4f3c | 711 | if (!objfile->has_partial_symbols ()) |
9cce227f | 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 | 753 | coff_symtab_read (minimal_symbol_reader &reader, |
a9e48095 | 754 | file_ptr symtab_offset, unsigned int nsyms, |
fba45db2 | 755 | struct objfile *objfile) |
c906108c | 756 | { |
08feed99 | 757 | struct gdbarch *gdbarch = objfile->arch (); |
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. */ |
a9e48095 | 800 | val = bfd_seek (objfile->obfd, symtab_offset, 0); |
c906108c | 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, | |
6a053cb1 | 923 | (cs->c_value |
b3b3bada | 924 | + objfile->text_section_offset ()), |
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 | } |
24b21115 SM |
971 | else if (cs->c_secnum == N_ABS) |
972 | { | |
973 | /* Use the correct minimal symbol type (and don't | |
974 | relocate) for absolute values. */ | |
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; | |
24b21115 SM |
985 | /* Statics in a PE file also get relocated. */ |
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))) | |
6a053cb1 | 990 | offset = 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; |
a52d653e | 1030 | sym->set_section_index (sec); |
c5aa993b JM |
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 |
dda83cd7 | 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 | |
dda83cd7 | 1051 | context_stack_depth is zero, and complain if not. */ |
c5aa993b JM |
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; |
dda83cd7 | 1065 | not useful for gdb. */ |
c5aa993b | 1066 | /* { main_aux.x_sym.x_misc.x_lnsz.x_lnno |
dda83cd7 | 1067 | contains number of lines to '}' */ |
c5aa993b | 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 '{'. | |
dda83cd7 SM |
1099 | Do not record it - because it would affect gdb's idea |
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 | |
b3b3bada | 1117 | + objfile->text_section_offset ()); |
c5aa993b JM |
1118 | within_function = 0; |
1119 | } | |
1120 | break; | |
c906108c | 1121 | |
c5aa993b | 1122 | case C_BLOCK: |
7ecb6532 | 1123 | if (strcmp (cs->c_name, ".bb") == 0) |
c5aa993b JM |
1124 | { |
1125 | tmpaddr = cs->c_value; | |
b3b3bada | 1126 | tmpaddr += objfile->text_section_offset (); |
c5aa993b JM |
1127 | push_context (++depth, tmpaddr); |
1128 | } | |
7ecb6532 | 1129 | else if (strcmp (cs->c_name, ".eb") == 0) |
c5aa993b | 1130 | { |
edb0470b | 1131 | if (outermost_context_p ()) |
0963b4bd | 1132 | { /* We attempted to pop an empty context stack. */ |
b98664d3 | 1133 | complaint (_("`.eb' symbol without matching `.bb' " |
3e43a32a | 1134 | "symbol ignored starting at symnum %d"), |
23136709 | 1135 | cs->c_symnum); |
c5aa993b JM |
1136 | break; |
1137 | } | |
c906108c | 1138 | |
a60f3166 TT |
1139 | struct context_stack cstk = pop_context (); |
1140 | if (depth-- != cstk.depth) | |
c5aa993b | 1141 | { |
b98664d3 | 1142 | complaint (_("Mismatched .eb symbol ignored " |
3e43a32a | 1143 | "starting at symnum %d"), |
23136709 | 1144 | symnum); |
c5aa993b JM |
1145 | break; |
1146 | } | |
e148f09d | 1147 | if (*get_local_symbols () && !outermost_context_p ()) |
c5aa993b | 1148 | { |
b3b3bada | 1149 | tmpaddr = cs->c_value + objfile->text_section_offset (); |
c5aa993b | 1150 | /* Make a block for the local symbols within. */ |
c233e9c6 | 1151 | finish_block (0, cstk.old_blocks, NULL, |
a60f3166 | 1152 | cstk.start_addr, tmpaddr); |
c5aa993b JM |
1153 | } |
1154 | /* Now pop locals of block just finished. */ | |
e148f09d | 1155 | *get_local_symbols () = cstk.locals; |
c5aa993b JM |
1156 | } |
1157 | break; | |
c906108c | 1158 | |
c5aa993b | 1159 | default: |
96baa820 | 1160 | process_coff_symbol (cs, &main_aux, objfile); |
c5aa993b | 1161 | break; |
c906108c SS |
1162 | } |
1163 | } | |
1164 | ||
1b6bc7e0 CF |
1165 | if ((nsyms == 0) && (pe_file)) |
1166 | { | |
c2f20dd6 | 1167 | /* We've got no debugging symbols, but it's a portable |
aff410f1 | 1168 | executable, so try to read the export table. */ |
8dddcb8f | 1169 | read_pe_exported_syms (reader, objfile); |
1b6bc7e0 CF |
1170 | } |
1171 | ||
46212e0b | 1172 | if (get_last_source_file ()) |
c906108c SS |
1173 | coff_end_symtab (objfile); |
1174 | ||
1175 | /* Patch up any opaque types (references to types that are not defined | |
1176 | in the file where they are referenced, e.g. "struct foo *bar"). */ | |
43f3e411 | 1177 | { |
b669c953 | 1178 | for (compunit_symtab *cu : objfile->compunits ()) |
d5da8b3c TT |
1179 | { |
1180 | for (symtab *s : compunit_filetabs (cu)) | |
1181 | patch_opaque_types (s); | |
1182 | } | |
43f3e411 | 1183 | } |
c906108c | 1184 | |
dd707e8e | 1185 | coffread_objfile = NULL; |
c906108c SS |
1186 | } |
1187 | \f | |
1188 | /* Routines for reading headers and symbols from executable. */ | |
1189 | ||
aff410f1 MS |
1190 | /* Read the next symbol, swap it, and return it in both |
1191 | internal_syment form, and coff_symbol form. Also return its first | |
1192 | auxent, if any, in internal_auxent form, and skip any other | |
1193 | auxents. */ | |
c906108c SS |
1194 | |
1195 | static void | |
aa1ee363 AC |
1196 | read_one_sym (struct coff_symbol *cs, |
1197 | struct internal_syment *sym, | |
1198 | union internal_auxent *aux) | |
c906108c SS |
1199 | { |
1200 | int i; | |
3b016d57 | 1201 | bfd_size_type bytes; |
c906108c SS |
1202 | |
1203 | cs->c_symnum = symnum; | |
3b016d57 DJ |
1204 | bytes = bfd_bread (temp_sym, local_symesz, nlist_bfd_global); |
1205 | if (bytes != local_symesz) | |
4262abfb | 1206 | error (_("%s: error reading symbols"), objfile_name (coffread_objfile)); |
c5aa993b | 1207 | bfd_coff_swap_sym_in (symfile_bfd, temp_sym, (char *) sym); |
c906108c SS |
1208 | cs->c_naux = sym->n_numaux & 0xff; |
1209 | if (cs->c_naux >= 1) | |
1210 | { | |
3b016d57 DJ |
1211 | bytes = bfd_bread (temp_aux, local_auxesz, nlist_bfd_global); |
1212 | if (bytes != local_auxesz) | |
4262abfb | 1213 | error (_("%s: error reading symbols"), objfile_name (coffread_objfile)); |
aff410f1 MS |
1214 | bfd_coff_swap_aux_in (symfile_bfd, temp_aux, |
1215 | sym->n_type, sym->n_sclass, | |
c5aa993b JM |
1216 | 0, cs->c_naux, (char *) aux); |
1217 | /* If more than one aux entry, read past it (only the first aux | |
dda83cd7 | 1218 | is important). */ |
c5aa993b | 1219 | for (i = 1; i < cs->c_naux; i++) |
3b016d57 DJ |
1220 | { |
1221 | bytes = bfd_bread (temp_aux, local_auxesz, nlist_bfd_global); | |
1222 | if (bytes != local_auxesz) | |
4262abfb JK |
1223 | error (_("%s: error reading symbols"), |
1224 | objfile_name (coffread_objfile)); | |
3b016d57 | 1225 | } |
c906108c SS |
1226 | } |
1227 | cs->c_name = getsymname (sym); | |
1228 | cs->c_value = sym->n_value; | |
1229 | cs->c_sclass = (sym->n_sclass & 0xff); | |
1230 | cs->c_secnum = sym->n_scnum; | |
1231 | cs->c_type = (unsigned) sym->n_type; | |
1232 | if (!SDB_TYPE (cs->c_type)) | |
1233 | cs->c_type = 0; | |
1234 | ||
1235 | #if 0 | |
1236 | if (cs->c_sclass & 128) | |
3d263c1d | 1237 | printf (_("thumb symbol %s, class 0x%x\n"), cs->c_name, cs->c_sclass); |
c906108c SS |
1238 | #endif |
1239 | ||
1240 | symnum += 1 + cs->c_naux; | |
1241 | ||
1242 | /* The PE file format stores symbol values as offsets within the | |
1243 | section, rather than as absolute addresses. We correct that | |
1244 | here, if the symbol has an appropriate storage class. FIXME: We | |
1245 | should use BFD to read the symbols, rather than duplicating the | |
1246 | work here. */ | |
1247 | if (pe_file) | |
1248 | { | |
1249 | switch (cs->c_sclass) | |
1250 | { | |
1251 | case C_EXT: | |
1252 | case C_THUMBEXT: | |
1253 | case C_THUMBEXTFUNC: | |
1254 | case C_SECTION: | |
1255 | case C_NT_WEAK: | |
1256 | case C_STAT: | |
1257 | case C_THUMBSTAT: | |
1258 | case C_THUMBSTATFUNC: | |
1259 | case C_LABEL: | |
1260 | case C_THUMBLABEL: | |
1261 | case C_BLOCK: | |
1262 | case C_FCN: | |
1263 | case C_EFCN: | |
1264 | if (cs->c_secnum != 0) | |
1265 | cs->c_value += cs_section_address (cs, symfile_bfd); | |
1266 | break; | |
1267 | } | |
1268 | } | |
1269 | } | |
1270 | \f | |
aff410f1 | 1271 | /* Support for string table handling. */ |
c906108c | 1272 | |
c906108c | 1273 | static int |
a9e48095 | 1274 | init_stringtab (bfd *abfd, file_ptr offset, gdb::unique_xmalloc_ptr<char> *storage) |
c906108c SS |
1275 | { |
1276 | long length; | |
1277 | int val; | |
1278 | unsigned char lengthbuf[4]; | |
1279 | ||
c906108c | 1280 | /* If the file is stripped, the offset might be zero, indicating no |
aff410f1 | 1281 | string table. Just return with `stringtab' set to null. */ |
c906108c SS |
1282 | if (offset == 0) |
1283 | return 0; | |
1284 | ||
1285 | if (bfd_seek (abfd, offset, 0) < 0) | |
1286 | return -1; | |
1287 | ||
3a42e9d0 | 1288 | val = bfd_bread ((char *) lengthbuf, sizeof lengthbuf, abfd); |
c906108c | 1289 | length = bfd_h_get_32 (symfile_bfd, lengthbuf); |
c5aa993b | 1290 | |
c906108c | 1291 | /* If no string table is needed, then the file may end immediately |
aff410f1 | 1292 | after the symbols. Just return with `stringtab' set to null. */ |
c906108c SS |
1293 | if (val != sizeof lengthbuf || length < sizeof lengthbuf) |
1294 | return 0; | |
1295 | ||
e2a03548 TT |
1296 | storage->reset ((char *) xmalloc (length)); |
1297 | stringtab = storage->get (); | |
aff410f1 MS |
1298 | /* This is in target format (probably not very useful, and not |
1299 | currently used), not host format. */ | |
c906108c | 1300 | memcpy (stringtab, lengthbuf, sizeof lengthbuf); |
aff410f1 | 1301 | if (length == sizeof length) /* Empty table -- just the count. */ |
c906108c SS |
1302 | return 0; |
1303 | ||
aff410f1 MS |
1304 | val = bfd_bread (stringtab + sizeof lengthbuf, |
1305 | length - sizeof lengthbuf, abfd); | |
c906108c SS |
1306 | if (val != length - sizeof lengthbuf || stringtab[length - 1] != '\0') |
1307 | return -1; | |
1308 | ||
1309 | return 0; | |
1310 | } | |
1311 | ||
c906108c | 1312 | static char * |
fba45db2 | 1313 | getsymname (struct internal_syment *symbol_entry) |
c906108c | 1314 | { |
c5aa993b | 1315 | static char buffer[SYMNMLEN + 1]; |
c906108c SS |
1316 | char *result; |
1317 | ||
1318 | if (symbol_entry->_n._n_n._n_zeroes == 0) | |
1319 | { | |
1320 | /* FIXME: Probably should be detecting corrupt symbol files by | |
dda83cd7 | 1321 | seeing whether offset points to within the stringtab. */ |
c906108c SS |
1322 | result = stringtab + symbol_entry->_n._n_n._n_offset; |
1323 | } | |
1324 | else | |
1325 | { | |
1326 | strncpy (buffer, symbol_entry->_n._n_name, SYMNMLEN); | |
1327 | buffer[SYMNMLEN] = '\0'; | |
1328 | result = buffer; | |
1329 | } | |
1330 | return result; | |
1331 | } | |
1332 | ||
aff410f1 MS |
1333 | /* Extract the file name from the aux entry of a C_FILE symbol. |
1334 | Return only the last component of the name. Result is in static | |
1335 | storage and is only good for temporary use. */ | |
c906108c | 1336 | |
9f37bbcc | 1337 | static const char * |
fba45db2 | 1338 | coff_getfilename (union internal_auxent *aux_entry) |
c906108c SS |
1339 | { |
1340 | static char buffer[BUFSIZ]; | |
9f37bbcc | 1341 | const char *result; |
c906108c SS |
1342 | |
1343 | if (aux_entry->x_file.x_n.x_zeroes == 0) | |
9e91a352 MS |
1344 | { |
1345 | if (strlen (stringtab + aux_entry->x_file.x_n.x_offset) >= BUFSIZ) | |
1346 | internal_error (__FILE__, __LINE__, _("coff file name too long")); | |
1347 | strcpy (buffer, stringtab + aux_entry->x_file.x_n.x_offset); | |
1348 | } | |
c906108c SS |
1349 | else |
1350 | { | |
1351 | strncpy (buffer, aux_entry->x_file.x_fname, FILNMLEN); | |
1352 | buffer[FILNMLEN] = '\0'; | |
1353 | } | |
1354 | result = buffer; | |
1355 | ||
1356 | /* FIXME: We should not be throwing away the information about what | |
1357 | directory. It should go into dirname of the symtab, or some such | |
1358 | place. */ | |
9f37bbcc | 1359 | result = lbasename (result); |
c906108c SS |
1360 | return (result); |
1361 | } | |
1362 | \f | |
1363 | /* Support for line number handling. */ | |
1364 | ||
c906108c SS |
1365 | /* Read in all the line numbers for fast lookups later. Leave them in |
1366 | external (unswapped) format in memory; we'll swap them as we enter | |
1367 | them into GDB's data structures. */ | |
c5aa993b | 1368 | |
c906108c | 1369 | static int |
a9e48095 | 1370 | init_lineno (bfd *abfd, file_ptr offset, file_ptr size, |
e2a03548 | 1371 | gdb::unique_xmalloc_ptr<char> *storage) |
c906108c SS |
1372 | { |
1373 | int val; | |
1374 | ||
1375 | linetab_offset = offset; | |
1376 | linetab_size = size; | |
1377 | ||
c906108c SS |
1378 | if (size == 0) |
1379 | return 0; | |
1380 | ||
1381 | if (bfd_seek (abfd, offset, 0) < 0) | |
1382 | return -1; | |
c5aa993b | 1383 | |
aff410f1 | 1384 | /* Allocate the desired table, plus a sentinel. */ |
e2a03548 TT |
1385 | storage->reset ((char *) xmalloc (size + local_linesz)); |
1386 | linetab = storage->get (); | |
c906108c | 1387 | |
e2a03548 | 1388 | val = bfd_bread (storage->get (), size, abfd); |
c906108c SS |
1389 | if (val != size) |
1390 | return -1; | |
1391 | ||
aff410f1 | 1392 | /* Terminate it with an all-zero sentinel record. */ |
c906108c SS |
1393 | memset (linetab + size, 0, local_linesz); |
1394 | ||
1395 | return 0; | |
1396 | } | |
1397 | ||
c906108c SS |
1398 | #if !defined (L_LNNO32) |
1399 | #define L_LNNO32(lp) ((lp)->l_lnno) | |
1400 | #endif | |
1401 | ||
1402 | static void | |
a9e48095 | 1403 | enter_linenos (file_ptr file_offset, int first_line, |
aa1ee363 | 1404 | int last_line, struct objfile *objfile) |
c906108c | 1405 | { |
08feed99 | 1406 | struct gdbarch *gdbarch = objfile->arch (); |
52f0bd74 | 1407 | char *rawptr; |
c906108c SS |
1408 | struct internal_lineno lptr; |
1409 | ||
1410 | if (!linetab) | |
c5aa993b | 1411 | return; |
c906108c SS |
1412 | if (file_offset < linetab_offset) |
1413 | { | |
d5d24e12 LM |
1414 | complaint (_("Line number pointer %s lower than start of line numbers"), |
1415 | plongest (file_offset)); | |
aff410f1 | 1416 | if (file_offset > linetab_size) /* Too big to be an offset? */ |
c906108c | 1417 | return; |
aff410f1 MS |
1418 | file_offset += linetab_offset; /* Try reading at that linetab |
1419 | offset. */ | |
c906108c | 1420 | } |
c5aa993b | 1421 | |
c906108c SS |
1422 | rawptr = &linetab[file_offset - linetab_offset]; |
1423 | ||
aff410f1 | 1424 | /* Skip first line entry for each function. */ |
c906108c | 1425 | rawptr += local_linesz; |
aff410f1 | 1426 | /* Line numbers start at one for the first line of the function. */ |
c906108c SS |
1427 | first_line--; |
1428 | ||
e6a8a7d2 EZ |
1429 | /* If the line number table is full (e.g. 64K lines in COFF debug |
1430 | info), the next function's L_LNNO32 might not be zero, so don't | |
1431 | overstep the table's end in any case. */ | |
1432 | while (rawptr <= &linetab[0] + linetab_size) | |
c5aa993b JM |
1433 | { |
1434 | bfd_coff_swap_lineno_in (symfile_bfd, rawptr, &lptr); | |
1435 | rawptr += local_linesz; | |
e6a8a7d2 | 1436 | /* The next function, or the sentinel, will have L_LNNO32 zero; |
aff410f1 | 1437 | we exit. */ |
c5aa993b | 1438 | if (L_LNNO32 (&lptr) && L_LNNO32 (&lptr) <= last_line) |
fbf65064 UW |
1439 | { |
1440 | CORE_ADDR addr = lptr.l_addr.l_paddr; | |
b3b3bada | 1441 | addr += objfile->text_section_offset (); |
3c65e5b3 | 1442 | record_line (get_current_subfile (), |
aff410f1 | 1443 | first_line + L_LNNO32 (&lptr), |
fbf65064 UW |
1444 | gdbarch_addr_bits_remove (gdbarch, addr)); |
1445 | } | |
c5aa993b JM |
1446 | else |
1447 | break; | |
1448 | } | |
c906108c SS |
1449 | } |
1450 | \f | |
1451 | static void | |
fba45db2 | 1452 | patch_type (struct type *type, struct type *real_type) |
c906108c | 1453 | { |
52f0bd74 AC |
1454 | struct type *target = TYPE_TARGET_TYPE (type); |
1455 | struct type *real_target = TYPE_TARGET_TYPE (real_type); | |
1f704f76 | 1456 | int field_size = real_target->num_fields () * sizeof (struct field); |
c906108c SS |
1457 | |
1458 | TYPE_LENGTH (target) = TYPE_LENGTH (real_target); | |
1f704f76 | 1459 | target->set_num_fields (real_target->num_fields ()); |
c906108c | 1460 | |
3cabb6b0 SM |
1461 | field *fields = (struct field *) TYPE_ALLOC (target, field_size); |
1462 | memcpy (fields, real_target->fields (), field_size); | |
1463 | target->set_fields (fields); | |
c906108c | 1464 | |
7d93a1e0 | 1465 | if (real_target->name ()) |
c906108c | 1466 | { |
0d5cff50 DE |
1467 | /* The previous copy of TYPE_NAME is allocated by |
1468 | process_coff_symbol. */ | |
84d53fa9 | 1469 | xfree ((char *) target->name ()); |
7d93a1e0 | 1470 | target->set_name (xstrdup (real_target->name ())); |
c906108c SS |
1471 | } |
1472 | } | |
1473 | ||
1474 | /* Patch up all appropriate typedef symbols in the opaque_type_chains | |
aff410f1 MS |
1475 | so that they can be used to print out opaque data structures |
1476 | properly. */ | |
c906108c SS |
1477 | |
1478 | static void | |
fba45db2 | 1479 | patch_opaque_types (struct symtab *s) |
c906108c | 1480 | { |
582942f4 | 1481 | const struct block *b; |
8157b174 | 1482 | struct block_iterator iter; |
52f0bd74 | 1483 | struct symbol *real_sym; |
c5aa993b | 1484 | |
aff410f1 | 1485 | /* Go through the per-file symbols only. */ |
439247b6 | 1486 | b = BLOCKVECTOR_BLOCK (SYMTAB_BLOCKVECTOR (s), STATIC_BLOCK); |
de4f826b | 1487 | ALL_BLOCK_SYMBOLS (b, iter, real_sym) |
c906108c SS |
1488 | { |
1489 | /* Find completed typedefs to use to fix opaque ones. | |
dda83cd7 SM |
1490 | Remove syms from the chain when their types are stored, |
1491 | but search the whole chain, as there may be several syms | |
1492 | from different files with the same name. */ | |
5aafa1cc PM |
1493 | if (SYMBOL_CLASS (real_sym) == LOC_TYPEDEF |
1494 | && SYMBOL_DOMAIN (real_sym) == VAR_DOMAIN | |
78134374 | 1495 | && SYMBOL_TYPE (real_sym)->code () == TYPE_CODE_PTR |
5aafa1cc | 1496 | && TYPE_LENGTH (TYPE_TARGET_TYPE (SYMBOL_TYPE (real_sym))) != 0) |
c906108c | 1497 | { |
987012b8 | 1498 | const char *name = real_sym->linkage_name (); |
aa1ee363 AC |
1499 | int hash = hashname (name); |
1500 | struct symbol *sym, *prev; | |
c5aa993b | 1501 | |
c906108c SS |
1502 | prev = 0; |
1503 | for (sym = opaque_type_chain[hash]; sym;) | |
1504 | { | |
987012b8 CB |
1505 | if (name[0] == sym->linkage_name ()[0] |
1506 | && strcmp (name + 1, sym->linkage_name () + 1) == 0) | |
c906108c SS |
1507 | { |
1508 | if (prev) | |
1509 | { | |
1510 | SYMBOL_VALUE_CHAIN (prev) = SYMBOL_VALUE_CHAIN (sym); | |
1511 | } | |
1512 | else | |
1513 | { | |
1514 | opaque_type_chain[hash] = SYMBOL_VALUE_CHAIN (sym); | |
1515 | } | |
c5aa993b | 1516 | |
c906108c | 1517 | patch_type (SYMBOL_TYPE (sym), SYMBOL_TYPE (real_sym)); |
c5aa993b | 1518 | |
c906108c SS |
1519 | if (prev) |
1520 | { | |
1521 | sym = SYMBOL_VALUE_CHAIN (prev); | |
1522 | } | |
1523 | else | |
1524 | { | |
1525 | sym = opaque_type_chain[hash]; | |
1526 | } | |
1527 | } | |
1528 | else | |
1529 | { | |
1530 | prev = sym; | |
1531 | sym = SYMBOL_VALUE_CHAIN (sym); | |
1532 | } | |
1533 | } | |
1534 | } | |
1535 | } | |
1536 | } | |
1537 | \f | |
768a979c UW |
1538 | static int |
1539 | coff_reg_to_regnum (struct symbol *sym, struct gdbarch *gdbarch) | |
1540 | { | |
1541 | return gdbarch_sdb_reg_to_regnum (gdbarch, SYMBOL_VALUE (sym)); | |
1542 | } | |
1543 | ||
1544 | static const struct symbol_register_ops coff_register_funcs = { | |
1545 | coff_reg_to_regnum | |
1546 | }; | |
1547 | ||
f1e6e072 TT |
1548 | /* The "aclass" index for computed COFF symbols. */ |
1549 | ||
1550 | static int coff_register_index; | |
1551 | ||
c906108c | 1552 | static struct symbol * |
aa1ee363 AC |
1553 | process_coff_symbol (struct coff_symbol *cs, |
1554 | union internal_auxent *aux, | |
fba45db2 | 1555 | struct objfile *objfile) |
c906108c | 1556 | { |
8c14c3a3 | 1557 | struct symbol *sym = new (&objfile->objfile_obstack) symbol; |
c906108c SS |
1558 | char *name; |
1559 | ||
c906108c SS |
1560 | name = cs->c_name; |
1561 | name = EXTERNAL_NAME (name, objfile->obfd); | |
d3ecddab CB |
1562 | sym->set_language (get_current_subfile ()->language, |
1563 | &objfile->objfile_obstack); | |
4d4eaa30 | 1564 | sym->compute_and_set_names (name, true, objfile->per_bfd); |
c906108c SS |
1565 | |
1566 | /* default assumptions */ | |
1567 | SYMBOL_VALUE (sym) = cs->c_value; | |
176620f1 | 1568 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
a52d653e | 1569 | sym->set_section_index (cs_to_section (cs, objfile)); |
c906108c SS |
1570 | |
1571 | if (ISFCN (cs->c_type)) | |
1572 | { | |
b3b3bada | 1573 | SYMBOL_VALUE (sym) += objfile->text_section_offset (); |
c5aa993b | 1574 | SYMBOL_TYPE (sym) = |
aff410f1 MS |
1575 | lookup_function_type (decode_function_type (cs, cs->c_type, |
1576 | aux, objfile)); | |
c906108c | 1577 | |
f1e6e072 | 1578 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
c906108c SS |
1579 | if (cs->c_sclass == C_STAT || cs->c_sclass == C_THUMBSTAT |
1580 | || cs->c_sclass == C_THUMBSTATFUNC) | |
e148f09d | 1581 | add_symbol_to_list (sym, get_file_symbols ()); |
c906108c SS |
1582 | else if (cs->c_sclass == C_EXT || cs->c_sclass == C_THUMBEXT |
1583 | || cs->c_sclass == C_THUMBEXTFUNC) | |
e148f09d | 1584 | add_symbol_to_list (sym, get_global_symbols ()); |
c906108c SS |
1585 | } |
1586 | else | |
1587 | { | |
5e2b427d | 1588 | SYMBOL_TYPE (sym) = decode_type (cs, cs->c_type, aux, objfile); |
c906108c SS |
1589 | switch (cs->c_sclass) |
1590 | { | |
c5aa993b JM |
1591 | case C_NULL: |
1592 | break; | |
c906108c | 1593 | |
c5aa993b | 1594 | case C_AUTO: |
f1e6e072 | 1595 | SYMBOL_ACLASS_INDEX (sym) = LOC_LOCAL; |
e148f09d | 1596 | add_symbol_to_list (sym, get_local_symbols ()); |
c5aa993b | 1597 | break; |
c906108c | 1598 | |
c5aa993b JM |
1599 | case C_THUMBEXT: |
1600 | case C_THUMBEXTFUNC: | |
1601 | case C_EXT: | |
f1e6e072 | 1602 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
38583298 TT |
1603 | SET_SYMBOL_VALUE_ADDRESS (sym, |
1604 | (CORE_ADDR) cs->c_value | |
6a053cb1 | 1605 | + objfile->section_offsets[SECT_OFF_TEXT (objfile)]); |
e148f09d | 1606 | add_symbol_to_list (sym, get_global_symbols ()); |
c5aa993b | 1607 | break; |
c906108c | 1608 | |
c5aa993b JM |
1609 | case C_THUMBSTAT: |
1610 | case C_THUMBSTATFUNC: | |
1611 | case C_STAT: | |
f1e6e072 | 1612 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
38583298 TT |
1613 | SET_SYMBOL_VALUE_ADDRESS (sym, |
1614 | (CORE_ADDR) cs->c_value | |
6a053cb1 | 1615 | + objfile->section_offsets[SECT_OFF_TEXT (objfile)]); |
c5aa993b JM |
1616 | if (within_function) |
1617 | { | |
aff410f1 | 1618 | /* Static symbol of local scope. */ |
e148f09d | 1619 | add_symbol_to_list (sym, get_local_symbols ()); |
c906108c | 1620 | } |
c5aa993b JM |
1621 | else |
1622 | { | |
aff410f1 | 1623 | /* Static symbol at top level of file. */ |
e148f09d | 1624 | add_symbol_to_list (sym, get_file_symbols ()); |
c906108c | 1625 | } |
c5aa993b | 1626 | break; |
c906108c SS |
1627 | |
1628 | #ifdef C_GLBLREG /* AMD coff */ | |
c5aa993b | 1629 | case C_GLBLREG: |
c906108c | 1630 | #endif |
c5aa993b | 1631 | case C_REG: |
f1e6e072 | 1632 | SYMBOL_ACLASS_INDEX (sym) = coff_register_index; |
768a979c | 1633 | SYMBOL_VALUE (sym) = cs->c_value; |
e148f09d | 1634 | add_symbol_to_list (sym, get_local_symbols ()); |
c5aa993b | 1635 | break; |
c906108c | 1636 | |
c5aa993b JM |
1637 | case C_THUMBLABEL: |
1638 | case C_LABEL: | |
1639 | break; | |
c906108c | 1640 | |
c5aa993b | 1641 | case C_ARG: |
f1e6e072 | 1642 | SYMBOL_ACLASS_INDEX (sym) = LOC_ARG; |
2a2d4dc3 | 1643 | SYMBOL_IS_ARGUMENT (sym) = 1; |
e148f09d | 1644 | add_symbol_to_list (sym, get_local_symbols ()); |
c5aa993b | 1645 | break; |
c906108c | 1646 | |
c5aa993b | 1647 | case C_REGPARM: |
f1e6e072 | 1648 | SYMBOL_ACLASS_INDEX (sym) = coff_register_index; |
2a2d4dc3 | 1649 | SYMBOL_IS_ARGUMENT (sym) = 1; |
768a979c | 1650 | SYMBOL_VALUE (sym) = cs->c_value; |
e148f09d | 1651 | add_symbol_to_list (sym, get_local_symbols ()); |
c5aa993b | 1652 | break; |
c906108c | 1653 | |
c5aa993b | 1654 | case C_TPDEF: |
f1e6e072 | 1655 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 1656 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c5aa993b | 1657 | |
0963b4bd | 1658 | /* If type has no name, give it one. */ |
7d93a1e0 | 1659 | if (SYMBOL_TYPE (sym)->name () == 0) |
c5aa993b | 1660 | { |
78134374 SM |
1661 | if (SYMBOL_TYPE (sym)->code () == TYPE_CODE_PTR |
1662 | || SYMBOL_TYPE (sym)->code () == TYPE_CODE_FUNC) | |
c5aa993b | 1663 | { |
aff410f1 MS |
1664 | /* If we are giving a name to a type such as |
1665 | "pointer to foo" or "function returning foo", we | |
1666 | better not set the TYPE_NAME. If the program | |
1667 | contains "typedef char *caddr_t;", we don't want | |
1668 | all variables of type char * to print as caddr_t. | |
1669 | This is not just a consequence of GDB's type | |
1670 | management; CC and GCC (at least through version | |
1671 | 2.4) both output variables of either type char * | |
1672 | or caddr_t with the type refering to the C_TPDEF | |
1673 | symbol for caddr_t. If a future compiler cleans | |
1674 | this up it GDB is not ready for it yet, but if it | |
1675 | becomes ready we somehow need to disable this | |
1676 | check (without breaking the PCC/GCC2.4 case). | |
c5aa993b JM |
1677 | |
1678 | Sigh. | |
1679 | ||
1680 | Fortunately, this check seems not to be necessary | |
1681 | for anything except pointers or functions. */ | |
1682 | ; | |
1683 | } | |
1684 | else | |
d0e39ea2 | 1685 | SYMBOL_TYPE (sym)->set_name (xstrdup (sym->linkage_name ())); |
c5aa993b | 1686 | } |
c906108c | 1687 | |
aff410f1 MS |
1688 | /* Keep track of any type which points to empty structured |
1689 | type, so it can be filled from a definition from another | |
1690 | file. A simple forward reference (TYPE_CODE_UNDEF) is | |
1691 | not an empty structured type, though; the forward | |
1692 | references work themselves out via the magic of | |
1693 | coff_lookup_type. */ | |
78134374 | 1694 | if (SYMBOL_TYPE (sym)->code () == TYPE_CODE_PTR |
5aafa1cc | 1695 | && TYPE_LENGTH (TYPE_TARGET_TYPE (SYMBOL_TYPE (sym))) == 0 |
78134374 SM |
1696 | && TYPE_TARGET_TYPE (SYMBOL_TYPE (sym))->code () |
1697 | != TYPE_CODE_UNDEF) | |
c5aa993b | 1698 | { |
987012b8 | 1699 | int i = hashname (sym->linkage_name ()); |
c906108c | 1700 | |
c5aa993b JM |
1701 | SYMBOL_VALUE_CHAIN (sym) = opaque_type_chain[i]; |
1702 | opaque_type_chain[i] = sym; | |
1703 | } | |
e148f09d | 1704 | add_symbol_to_list (sym, get_file_symbols ()); |
c5aa993b | 1705 | break; |
c906108c | 1706 | |
c5aa993b JM |
1707 | case C_STRTAG: |
1708 | case C_UNTAG: | |
1709 | case C_ENTAG: | |
f1e6e072 | 1710 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 1711 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c5aa993b JM |
1712 | |
1713 | /* Some compilers try to be helpful by inventing "fake" | |
1714 | names for anonymous enums, structures, and unions, like | |
aff410f1 | 1715 | "~0fake" or ".0fake". Thanks, but no thanks... */ |
7d93a1e0 | 1716 | if (SYMBOL_TYPE (sym)->name () == 0) |
987012b8 CB |
1717 | if (sym->linkage_name () != NULL |
1718 | && *sym->linkage_name () != '~' | |
1719 | && *sym->linkage_name () != '.') | |
d0e39ea2 | 1720 | SYMBOL_TYPE (sym)->set_name (xstrdup (sym->linkage_name ())); |
c5aa993b | 1721 | |
e148f09d | 1722 | add_symbol_to_list (sym, get_file_symbols ()); |
c5aa993b | 1723 | break; |
c906108c | 1724 | |
c5aa993b JM |
1725 | default: |
1726 | break; | |
c906108c SS |
1727 | } |
1728 | } | |
1729 | return sym; | |
1730 | } | |
1731 | \f | |
1732 | /* Decode a coff type specifier; return the type that is meant. */ | |
1733 | ||
1734 | static struct type * | |
aa1ee363 | 1735 | decode_type (struct coff_symbol *cs, unsigned int c_type, |
5e2b427d | 1736 | union internal_auxent *aux, struct objfile *objfile) |
c906108c | 1737 | { |
52f0bd74 | 1738 | struct type *type = 0; |
c906108c SS |
1739 | unsigned int new_c_type; |
1740 | ||
1741 | if (c_type & ~N_BTMASK) | |
1742 | { | |
1743 | new_c_type = DECREF (c_type); | |
1744 | if (ISPTR (c_type)) | |
1745 | { | |
5e2b427d | 1746 | type = decode_type (cs, new_c_type, aux, objfile); |
c906108c SS |
1747 | type = lookup_pointer_type (type); |
1748 | } | |
1749 | else if (ISFCN (c_type)) | |
1750 | { | |
5e2b427d | 1751 | type = decode_type (cs, new_c_type, aux, objfile); |
c906108c SS |
1752 | type = lookup_function_type (type); |
1753 | } | |
1754 | else if (ISARY (c_type)) | |
1755 | { | |
1756 | int i, n; | |
aa1ee363 | 1757 | unsigned short *dim; |
c906108c SS |
1758 | struct type *base_type, *index_type, *range_type; |
1759 | ||
1760 | /* Define an array type. */ | |
aff410f1 | 1761 | /* auxent refers to array, not base type. */ |
c906108c SS |
1762 | if (aux->x_sym.x_tagndx.l == 0) |
1763 | cs->c_naux = 0; | |
1764 | ||
aff410f1 | 1765 | /* Shift the indices down. */ |
c906108c SS |
1766 | dim = &aux->x_sym.x_fcnary.x_ary.x_dimen[0]; |
1767 | i = 1; | |
1768 | n = dim[0]; | |
1769 | for (i = 0; *dim && i < DIMNUM - 1; i++, dim++) | |
1770 | *dim = *(dim + 1); | |
1771 | *dim = 0; | |
1772 | ||
5e2b427d | 1773 | base_type = decode_type (cs, new_c_type, aux, objfile); |
46bf5051 | 1774 | index_type = objfile_type (objfile)->builtin_int; |
0c9c3474 | 1775 | range_type |
cafb3438 | 1776 | = create_static_range_type (NULL, index_type, 0, n - 1); |
c906108c | 1777 | type = |
cafb3438 | 1778 | create_array_type (NULL, base_type, range_type); |
c906108c SS |
1779 | } |
1780 | return type; | |
1781 | } | |
1782 | ||
aff410f1 MS |
1783 | /* Reference to existing type. This only occurs with the struct, |
1784 | union, and enum types. EPI a29k coff fakes us out by producing | |
1785 | aux entries with a nonzero x_tagndx for definitions of structs, | |
1786 | unions, and enums, so we have to check the c_sclass field. SCO | |
1787 | 3.2v4 cc gets confused with pointers to pointers to defined | |
1788 | structs, and generates negative x_tagndx fields. */ | |
c906108c SS |
1789 | if (cs->c_naux > 0 && aux->x_sym.x_tagndx.l != 0) |
1790 | { | |
1791 | if (cs->c_sclass != C_STRTAG | |
1792 | && cs->c_sclass != C_UNTAG | |
1793 | && cs->c_sclass != C_ENTAG | |
1794 | && aux->x_sym.x_tagndx.l >= 0) | |
1795 | { | |
1796 | type = coff_alloc_type (aux->x_sym.x_tagndx.l); | |
1797 | return type; | |
1798 | } | |
1799 | else | |
1800 | { | |
b98664d3 | 1801 | complaint (_("Symbol table entry for %s has bad tagndx value"), |
23136709 | 1802 | cs->c_name); |
aff410f1 | 1803 | /* And fall through to decode_base_type... */ |
c906108c SS |
1804 | } |
1805 | } | |
1806 | ||
5e2b427d | 1807 | return decode_base_type (cs, BTYPE (c_type), aux, objfile); |
c906108c SS |
1808 | } |
1809 | ||
1810 | /* Decode a coff type specifier for function definition; | |
1811 | return the type that the function returns. */ | |
1812 | ||
1813 | static struct type * | |
aff410f1 MS |
1814 | decode_function_type (struct coff_symbol *cs, |
1815 | unsigned int c_type, | |
1816 | union internal_auxent *aux, | |
1817 | struct objfile *objfile) | |
c906108c SS |
1818 | { |
1819 | if (aux->x_sym.x_tagndx.l == 0) | |
aff410f1 MS |
1820 | cs->c_naux = 0; /* auxent refers to function, not base |
1821 | type. */ | |
c906108c | 1822 | |
5e2b427d | 1823 | return decode_type (cs, DECREF (c_type), aux, objfile); |
c906108c SS |
1824 | } |
1825 | \f | |
aff410f1 | 1826 | /* Basic C types. */ |
c906108c SS |
1827 | |
1828 | static struct type * | |
aff410f1 MS |
1829 | decode_base_type (struct coff_symbol *cs, |
1830 | unsigned int c_type, | |
1831 | union internal_auxent *aux, | |
1832 | struct objfile *objfile) | |
c906108c | 1833 | { |
08feed99 | 1834 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c SS |
1835 | struct type *type; |
1836 | ||
1837 | switch (c_type) | |
1838 | { | |
c5aa993b | 1839 | case T_NULL: |
aff410f1 | 1840 | /* Shows up with "void (*foo)();" structure members. */ |
46bf5051 | 1841 | return objfile_type (objfile)->builtin_void; |
c906108c | 1842 | |
c906108c | 1843 | #ifdef T_VOID |
c5aa993b JM |
1844 | case T_VOID: |
1845 | /* Intel 960 COFF has this symbol and meaning. */ | |
46bf5051 | 1846 | return objfile_type (objfile)->builtin_void; |
c906108c SS |
1847 | #endif |
1848 | ||
c5aa993b | 1849 | case T_CHAR: |
46bf5051 | 1850 | return objfile_type (objfile)->builtin_char; |
c906108c | 1851 | |
c5aa993b | 1852 | case T_SHORT: |
46bf5051 | 1853 | return objfile_type (objfile)->builtin_short; |
c906108c | 1854 | |
c5aa993b | 1855 | case T_INT: |
46bf5051 | 1856 | return objfile_type (objfile)->builtin_int; |
c906108c | 1857 | |
c5aa993b JM |
1858 | case T_LONG: |
1859 | if (cs->c_sclass == C_FIELD | |
9a76efb6 | 1860 | && aux->x_sym.x_misc.x_lnsz.x_size |
5e2b427d | 1861 | > gdbarch_long_bit (gdbarch)) |
46bf5051 | 1862 | return objfile_type (objfile)->builtin_long_long; |
c5aa993b | 1863 | else |
46bf5051 | 1864 | return objfile_type (objfile)->builtin_long; |
c906108c | 1865 | |
c5aa993b | 1866 | case T_FLOAT: |
46bf5051 | 1867 | return objfile_type (objfile)->builtin_float; |
c906108c | 1868 | |
c5aa993b | 1869 | case T_DOUBLE: |
46bf5051 | 1870 | return objfile_type (objfile)->builtin_double; |
c906108c | 1871 | |
c5aa993b | 1872 | case T_LNGDBL: |
46bf5051 | 1873 | return objfile_type (objfile)->builtin_long_double; |
c906108c | 1874 | |
c5aa993b JM |
1875 | case T_STRUCT: |
1876 | if (cs->c_naux != 1) | |
1877 | { | |
aff410f1 | 1878 | /* Anonymous structure type. */ |
c5aa993b | 1879 | type = coff_alloc_type (cs->c_symnum); |
67607e24 | 1880 | type->set_code (TYPE_CODE_STRUCT); |
d0e39ea2 | 1881 | type->set_name (NULL); |
c5aa993b JM |
1882 | INIT_CPLUS_SPECIFIC (type); |
1883 | TYPE_LENGTH (type) = 0; | |
3cabb6b0 | 1884 | type->set_fields (nullptr); |
5e33d5f4 | 1885 | type->set_num_fields (0); |
c5aa993b JM |
1886 | } |
1887 | else | |
1888 | { | |
1889 | type = coff_read_struct_type (cs->c_symnum, | |
1890 | aux->x_sym.x_misc.x_lnsz.x_size, | |
5e2b427d UW |
1891 | aux->x_sym.x_fcnary.x_fcn.x_endndx.l, |
1892 | objfile); | |
c5aa993b JM |
1893 | } |
1894 | return type; | |
c906108c | 1895 | |
c5aa993b JM |
1896 | case T_UNION: |
1897 | if (cs->c_naux != 1) | |
1898 | { | |
aff410f1 | 1899 | /* Anonymous union type. */ |
c5aa993b | 1900 | type = coff_alloc_type (cs->c_symnum); |
d0e39ea2 | 1901 | type->set_name (NULL); |
c5aa993b JM |
1902 | INIT_CPLUS_SPECIFIC (type); |
1903 | TYPE_LENGTH (type) = 0; | |
3cabb6b0 | 1904 | type->set_fields (nullptr); |
5e33d5f4 | 1905 | type->set_num_fields (0); |
c5aa993b JM |
1906 | } |
1907 | else | |
1908 | { | |
1909 | type = coff_read_struct_type (cs->c_symnum, | |
c906108c | 1910 | aux->x_sym.x_misc.x_lnsz.x_size, |
5e2b427d UW |
1911 | aux->x_sym.x_fcnary.x_fcn.x_endndx.l, |
1912 | objfile); | |
c5aa993b | 1913 | } |
67607e24 | 1914 | type->set_code (TYPE_CODE_UNION); |
c5aa993b | 1915 | return type; |
c906108c | 1916 | |
c5aa993b JM |
1917 | case T_ENUM: |
1918 | if (cs->c_naux != 1) | |
1919 | { | |
aff410f1 | 1920 | /* Anonymous enum type. */ |
c5aa993b | 1921 | type = coff_alloc_type (cs->c_symnum); |
67607e24 | 1922 | type->set_code (TYPE_CODE_ENUM); |
d0e39ea2 | 1923 | type->set_name (NULL); |
c5aa993b | 1924 | TYPE_LENGTH (type) = 0; |
3cabb6b0 | 1925 | type->set_fields (nullptr); |
5e33d5f4 | 1926 | type->set_num_fields (0); |
c5aa993b JM |
1927 | } |
1928 | else | |
1929 | { | |
1930 | type = coff_read_enum_type (cs->c_symnum, | |
1931 | aux->x_sym.x_misc.x_lnsz.x_size, | |
5e2b427d UW |
1932 | aux->x_sym.x_fcnary.x_fcn.x_endndx.l, |
1933 | objfile); | |
c5aa993b JM |
1934 | } |
1935 | return type; | |
1936 | ||
1937 | case T_MOE: | |
aff410f1 | 1938 | /* Shouldn't show up here. */ |
c5aa993b | 1939 | break; |
c906108c | 1940 | |
c5aa993b | 1941 | case T_UCHAR: |
46bf5051 | 1942 | return objfile_type (objfile)->builtin_unsigned_char; |
c906108c | 1943 | |
c5aa993b | 1944 | case T_USHORT: |
46bf5051 | 1945 | return objfile_type (objfile)->builtin_unsigned_short; |
c906108c | 1946 | |
c5aa993b | 1947 | case T_UINT: |
46bf5051 | 1948 | return objfile_type (objfile)->builtin_unsigned_int; |
c906108c | 1949 | |
c5aa993b JM |
1950 | case T_ULONG: |
1951 | if (cs->c_sclass == C_FIELD | |
9a76efb6 | 1952 | && aux->x_sym.x_misc.x_lnsz.x_size |
5e2b427d | 1953 | > gdbarch_long_bit (gdbarch)) |
46bf5051 | 1954 | return objfile_type (objfile)->builtin_unsigned_long_long; |
c5aa993b | 1955 | else |
46bf5051 | 1956 | return objfile_type (objfile)->builtin_unsigned_long; |
c906108c | 1957 | } |
b98664d3 | 1958 | complaint (_("Unexpected type for symbol %s"), cs->c_name); |
46bf5051 | 1959 | return objfile_type (objfile)->builtin_void; |
c906108c SS |
1960 | } |
1961 | \f | |
1962 | /* This page contains subroutines of read_type. */ | |
1963 | ||
1964 | /* Read the description of a structure (or union type) and return an | |
1965 | object describing the type. */ | |
1966 | ||
1967 | static struct type * | |
5e2b427d UW |
1968 | coff_read_struct_type (int index, int length, int lastsym, |
1969 | struct objfile *objfile) | |
c906108c SS |
1970 | { |
1971 | struct nextfield | |
1972 | { | |
1973 | struct nextfield *next; | |
1974 | struct field field; | |
1975 | }; | |
1976 | ||
52f0bd74 AC |
1977 | struct type *type; |
1978 | struct nextfield *list = 0; | |
fe978cb0 | 1979 | struct nextfield *newobj; |
c906108c | 1980 | int nfields = 0; |
52f0bd74 | 1981 | int n; |
c906108c SS |
1982 | char *name; |
1983 | struct coff_symbol member_sym; | |
52f0bd74 | 1984 | struct coff_symbol *ms = &member_sym; |
c906108c SS |
1985 | struct internal_syment sub_sym; |
1986 | union internal_auxent sub_aux; | |
1987 | int done = 0; | |
1988 | ||
1989 | type = coff_alloc_type (index); | |
67607e24 | 1990 | type->set_code (TYPE_CODE_STRUCT); |
c5aa993b | 1991 | INIT_CPLUS_SPECIFIC (type); |
c906108c SS |
1992 | TYPE_LENGTH (type) = length; |
1993 | ||
1994 | while (!done && symnum < lastsym && symnum < nlist_nsyms_global) | |
1995 | { | |
1996 | read_one_sym (ms, &sub_sym, &sub_aux); | |
1997 | name = ms->c_name; | |
5e2b427d | 1998 | name = EXTERNAL_NAME (name, objfile->obfd); |
c906108c SS |
1999 | |
2000 | switch (ms->c_sclass) | |
2001 | { | |
c5aa993b JM |
2002 | case C_MOS: |
2003 | case C_MOU: | |
2004 | ||
2005 | /* Get space to record the next field's data. */ | |
8d749320 | 2006 | newobj = XALLOCA (struct nextfield); |
fe978cb0 PA |
2007 | newobj->next = list; |
2008 | list = newobj; | |
c5aa993b JM |
2009 | |
2010 | /* Save the data. */ | |
021887d8 | 2011 | list->field.name = obstack_strdup (&objfile->objfile_obstack, name); |
5d14b6e5 SM |
2012 | list->field.set_type (decode_type (ms, ms->c_type, &sub_aux, |
2013 | objfile)); | |
d6a843b5 | 2014 | SET_FIELD_BITPOS (list->field, 8 * ms->c_value); |
c5aa993b JM |
2015 | FIELD_BITSIZE (list->field) = 0; |
2016 | nfields++; | |
2017 | break; | |
c906108c | 2018 | |
c5aa993b JM |
2019 | case C_FIELD: |
2020 | ||
2021 | /* Get space to record the next field's data. */ | |
8d749320 | 2022 | newobj = XALLOCA (struct nextfield); |
fe978cb0 PA |
2023 | newobj->next = list; |
2024 | list = newobj; | |
c5aa993b JM |
2025 | |
2026 | /* Save the data. */ | |
021887d8 | 2027 | list->field.name = obstack_strdup (&objfile->objfile_obstack, name); |
5d14b6e5 SM |
2028 | list->field.set_type (decode_type (ms, ms->c_type, &sub_aux, |
2029 | objfile)); | |
d6a843b5 | 2030 | SET_FIELD_BITPOS (list->field, ms->c_value); |
c5aa993b JM |
2031 | FIELD_BITSIZE (list->field) = sub_aux.x_sym.x_misc.x_lnsz.x_size; |
2032 | nfields++; | |
2033 | break; | |
c906108c | 2034 | |
c5aa993b JM |
2035 | case C_EOS: |
2036 | done = 1; | |
2037 | break; | |
c906108c SS |
2038 | } |
2039 | } | |
2040 | /* Now create the vector of fields, and record how big it is. */ | |
2041 | ||
5e33d5f4 | 2042 | type->set_num_fields (nfields); |
3cabb6b0 SM |
2043 | type->set_fields |
2044 | ((struct field *) TYPE_ALLOC (type, sizeof (struct field) * nfields)); | |
c906108c SS |
2045 | |
2046 | /* Copy the saved-up fields into the field vector. */ | |
2047 | ||
2048 | for (n = nfields; list; list = list->next) | |
ceacbf6e | 2049 | type->field (--n) = list->field; |
c906108c SS |
2050 | |
2051 | return type; | |
2052 | } | |
2053 | \f | |
2054 | /* Read a definition of an enumeration type, | |
2055 | and create and return a suitable type object. | |
2056 | Also defines the symbols that represent the values of the type. */ | |
2057 | ||
c906108c | 2058 | static struct type * |
5e2b427d UW |
2059 | coff_read_enum_type (int index, int length, int lastsym, |
2060 | struct objfile *objfile) | |
c906108c | 2061 | { |
08feed99 | 2062 | struct gdbarch *gdbarch = objfile->arch (); |
52f0bd74 AC |
2063 | struct symbol *sym; |
2064 | struct type *type; | |
c906108c SS |
2065 | int nsyms = 0; |
2066 | int done = 0; | |
2067 | struct pending **symlist; | |
2068 | struct coff_symbol member_sym; | |
52f0bd74 | 2069 | struct coff_symbol *ms = &member_sym; |
c906108c SS |
2070 | struct internal_syment sub_sym; |
2071 | union internal_auxent sub_aux; | |
2072 | struct pending *osyms, *syms; | |
2073 | int o_nsyms; | |
52f0bd74 | 2074 | int n; |
c906108c SS |
2075 | char *name; |
2076 | int unsigned_enum = 1; | |
2077 | ||
2078 | type = coff_alloc_type (index); | |
2079 | if (within_function) | |
e148f09d | 2080 | symlist = get_local_symbols (); |
c906108c | 2081 | else |
e148f09d | 2082 | symlist = get_file_symbols (); |
c906108c SS |
2083 | osyms = *symlist; |
2084 | o_nsyms = osyms ? osyms->nsyms : 0; | |
2085 | ||
2086 | while (!done && symnum < lastsym && symnum < nlist_nsyms_global) | |
2087 | { | |
2088 | read_one_sym (ms, &sub_sym, &sub_aux); | |
2089 | name = ms->c_name; | |
5e2b427d | 2090 | name = EXTERNAL_NAME (name, objfile->obfd); |
c906108c SS |
2091 | |
2092 | switch (ms->c_sclass) | |
2093 | { | |
c5aa993b | 2094 | case C_MOE: |
8c14c3a3 | 2095 | sym = new (&objfile->objfile_obstack) symbol; |
c5aa993b | 2096 | |
021887d8 | 2097 | name = obstack_strdup (&objfile->objfile_obstack, name); |
43678b0a | 2098 | sym->set_linkage_name (name); |
f1e6e072 | 2099 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
176620f1 | 2100 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c5aa993b JM |
2101 | SYMBOL_VALUE (sym) = ms->c_value; |
2102 | add_symbol_to_list (sym, symlist); | |
2103 | nsyms++; | |
2104 | break; | |
c906108c | 2105 | |
c5aa993b JM |
2106 | case C_EOS: |
2107 | /* Sometimes the linker (on 386/ix 2.0.2 at least) screws | |
2108 | up the count of how many symbols to read. So stop | |
2109 | on .eos. */ | |
2110 | done = 1; | |
2111 | break; | |
c906108c SS |
2112 | } |
2113 | } | |
2114 | ||
2115 | /* Now fill in the fields of the type-structure. */ | |
2116 | ||
2117 | if (length > 0) | |
2118 | TYPE_LENGTH (type) = length; | |
9a76efb6 | 2119 | else /* Assume ints. */ |
5e2b427d | 2120 | TYPE_LENGTH (type) = gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT; |
67607e24 | 2121 | type->set_code (TYPE_CODE_ENUM); |
5e33d5f4 | 2122 | type->set_num_fields (nsyms); |
3cabb6b0 SM |
2123 | type->set_fields |
2124 | ((struct field *) TYPE_ALLOC (type, sizeof (struct field) * nsyms)); | |
c906108c SS |
2125 | |
2126 | /* Find the symbols for the values and put them into the type. | |
2127 | The symbols can be found in the symlist that we put them on | |
2128 | to cause them to be defined. osyms contains the old value | |
2129 | of that symlist; everything up to there was defined by us. */ | |
2130 | /* Note that we preserve the order of the enum constants, so | |
2131 | that in something like "enum {FOO, LAST_THING=FOO}" we print | |
2132 | FOO, not LAST_THING. */ | |
2133 | ||
2134 | for (syms = *symlist, n = 0; syms; syms = syms->next) | |
2135 | { | |
2136 | int j = 0; | |
2137 | ||
2138 | if (syms == osyms) | |
2139 | j = o_nsyms; | |
c5aa993b | 2140 | for (; j < syms->nsyms; j++, n++) |
c906108c SS |
2141 | { |
2142 | struct symbol *xsym = syms->symbol[j]; | |
c5504eaf | 2143 | |
c906108c | 2144 | SYMBOL_TYPE (xsym) = type; |
987012b8 | 2145 | TYPE_FIELD_NAME (type, n) = xsym->linkage_name (); |
ceacbf6e | 2146 | SET_FIELD_ENUMVAL (type->field (n), SYMBOL_VALUE (xsym)); |
c906108c SS |
2147 | if (SYMBOL_VALUE (xsym) < 0) |
2148 | unsigned_enum = 0; | |
2149 | TYPE_FIELD_BITSIZE (type, n) = 0; | |
2150 | } | |
2151 | if (syms == osyms) | |
2152 | break; | |
2153 | } | |
2154 | ||
2155 | if (unsigned_enum) | |
653223d3 | 2156 | type->set_is_unsigned (true); |
c906108c SS |
2157 | |
2158 | return type; | |
2159 | } | |
2160 | ||
aff410f1 | 2161 | /* Register our ability to parse symbols for coff BFD files. */ |
c906108c | 2162 | |
00b5771c | 2163 | static const struct sym_fns coff_sym_fns = |
c906108c | 2164 | { |
aff410f1 MS |
2165 | coff_new_init, /* sym_new_init: init anything gbl to |
2166 | entire symtab */ | |
2167 | coff_symfile_init, /* sym_init: read initial info, setup | |
2168 | for sym_read() */ | |
2169 | coff_symfile_read, /* sym_read: read a symbol file into | |
2170 | symtab */ | |
2171 | coff_symfile_finish, /* sym_finish: finished with file, | |
2172 | cleanup */ | |
2173 | default_symfile_offsets, /* sym_offsets: xlate external to | |
2174 | internal form */ | |
2175 | default_symfile_segments, /* sym_segments: Get segment | |
2176 | information from a file */ | |
c295b2e5 | 2177 | NULL, /* sym_read_linetable */ |
aff410f1 MS |
2178 | |
2179 | default_symfile_relocate, /* sym_relocate: Relocate a debug | |
2180 | section. */ | |
55aa24fb | 2181 | NULL, /* sym_probe_fns */ |
c906108c SS |
2182 | }; |
2183 | ||
6c265988 | 2184 | void _initialize_coffread (); |
c906108c | 2185 | void |
6c265988 | 2186 | _initialize_coffread () |
c906108c | 2187 | { |
c256e171 | 2188 | add_symtab_fns (bfd_target_coff_flavour, &coff_sym_fns); |
b8b98ad1 | 2189 | |
f1e6e072 TT |
2190 | coff_register_index |
2191 | = register_symbol_register_impl (LOC_REGISTER, &coff_register_funcs); | |
c906108c | 2192 | } |