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c906108c | 1 | /* Read coff symbol tables and convert to internal format, for GDB. |
1d506c26 | 2 | Copyright (C) 1987-2024 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 | 26 | #include "bfd.h" |
bf31fd38 | 27 | #include "gdbsupport/gdb_obstack.h" |
c906108c SS |
28 | #include <ctype.h> |
29 | ||
ef0f16cc TT |
30 | #include "coff/internal.h" |
31 | #include "libcoff.h" | |
4de283e4 | 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 | ||
91a81f69 TT |
43 | /* The objfile we are currently reading. */ |
44 | ||
dd707e8e | 45 | static struct objfile *coffread_objfile; |
91a81f69 | 46 | |
c5aa993b JM |
47 | struct coff_symfile_info |
48 | { | |
24699405 TT |
49 | file_ptr min_lineno_offset = 0; /* Where in file lowest line#s are. */ |
50 | file_ptr max_lineno_offset = 0; /* 1+last byte of line#s in file. */ | |
c906108c | 51 | |
24699405 TT |
52 | CORE_ADDR textaddr = 0; /* Addr of .text section. */ |
53 | unsigned int textsize = 0; /* Size of .text section. */ | |
e2a03548 | 54 | std::vector<asection *> *stabsects; /* .stab sections. */ |
24699405 TT |
55 | asection *stabstrsect = nullptr; /* Section pointer for .stab section. */ |
56 | char *stabstrdata = nullptr; | |
c5aa993b | 57 | }; |
c906108c | 58 | |
24699405 TT |
59 | /* Key for COFF-associated data. */ |
60 | ||
08b8a139 | 61 | static const registry<objfile>::key<coff_symfile_info> coff_objfile_data_key; |
24699405 | 62 | |
c906108c SS |
63 | /* Translate an external name string into a user-visible name. */ |
64 | #define EXTERNAL_NAME(string, abfd) \ | |
cdb090c8 | 65 | (*string != '\0' && *string == bfd_get_symbol_leading_char (abfd) \ |
0e3513d2 | 66 | ? string + 1 : string) |
c906108c SS |
67 | |
68 | /* To be an sdb debug type, type must have at least a basic or primary | |
69 | derived type. Using this rather than checking against T_NULL is | |
70 | said to prevent core dumps if we try to operate on Michael Bloom | |
71 | dbx-in-coff file. */ | |
72 | ||
73 | #define SDB_TYPE(type) (BTYPE(type) | (type & N_TMASK)) | |
74 | ||
c906108c SS |
75 | /* Core address of start and end of text of current source file. |
76 | This comes from a ".text" symbol where x_nlinno > 0. */ | |
77 | ||
78 | static CORE_ADDR current_source_start_addr; | |
79 | static CORE_ADDR current_source_end_addr; | |
80 | ||
81 | /* The addresses of the symbol table stream and number of symbols | |
82 | of the object file we are reading (as copied into core). */ | |
83 | ||
84 | static bfd *nlist_bfd_global; | |
85 | static int nlist_nsyms_global; | |
86 | ||
c906108c | 87 | |
aff410f1 MS |
88 | /* Pointers to scratch storage, used for reading raw symbols and |
89 | auxents. */ | |
c906108c SS |
90 | |
91 | static char *temp_sym; | |
92 | static char *temp_aux; | |
93 | ||
94 | /* Local variables that hold the shift and mask values for the | |
95 | COFF file that we are currently reading. These come back to us | |
96 | from BFD, and are referenced by their macro names, as well as | |
97 | internally to the BTYPE, ISPTR, ISFCN, ISARY, ISTAG, and DECREF | |
98 | macros from include/coff/internal.h . */ | |
99 | ||
c5aa993b JM |
100 | static unsigned local_n_btmask; |
101 | static unsigned local_n_btshft; | |
102 | static unsigned local_n_tmask; | |
103 | static unsigned local_n_tshift; | |
c906108c SS |
104 | |
105 | #define N_BTMASK local_n_btmask | |
106 | #define N_BTSHFT local_n_btshft | |
107 | #define N_TMASK local_n_tmask | |
108 | #define N_TSHIFT local_n_tshift | |
c5aa993b | 109 | |
aff410f1 MS |
110 | /* Local variables that hold the sizes in the file of various COFF |
111 | structures. (We only need to know this to read them from the file | |
112 | -- BFD will then translate the data in them, into `internal_xxx' | |
113 | structs in the right byte order, alignment, etc.) */ | |
c906108c | 114 | |
c5aa993b JM |
115 | static unsigned local_linesz; |
116 | static unsigned local_symesz; | |
117 | static unsigned local_auxesz; | |
c906108c SS |
118 | |
119 | /* This is set if this is a PE format file. */ | |
120 | ||
121 | static int pe_file; | |
122 | ||
123 | /* Chain of typedefs of pointers to empty struct/union types. | |
124 | They are chained thru the SYMBOL_VALUE_CHAIN. */ | |
125 | ||
126 | static struct symbol *opaque_type_chain[HASHSIZE]; | |
127 | ||
aff410f1 | 128 | /* Simplified internal version of coff symbol table information. */ |
c906108c | 129 | |
c5aa993b JM |
130 | struct coff_symbol |
131 | { | |
132 | char *c_name; | |
aff410f1 MS |
133 | int c_symnum; /* Symbol number of this entry. */ |
134 | int c_naux; /* 0 if syment only, 1 if syment + | |
135 | auxent, etc. */ | |
5e8db398 | 136 | CORE_ADDR c_value; |
c5aa993b JM |
137 | int c_sclass; |
138 | int c_secnum; | |
139 | unsigned int c_type; | |
140 | }; | |
c906108c | 141 | |
fc474241 DE |
142 | /* Vector of types defined so far, indexed by their type numbers. */ |
143 | ||
144 | static struct type **type_vector; | |
145 | ||
146 | /* Number of elements allocated for type_vector currently. */ | |
147 | ||
148 | static int type_vector_length; | |
149 | ||
150 | /* Initial size of type vector. Is realloc'd larger if needed, and | |
151 | realloc'd down to the size actually used, when completed. */ | |
152 | ||
153 | #define INITIAL_TYPE_VECTOR_LENGTH 160 | |
154 | ||
e2a03548 | 155 | static char *linetab = NULL; |
a9e48095 JN |
156 | static file_ptr linetab_offset; |
157 | static file_ptr linetab_size; | |
e2a03548 TT |
158 | |
159 | static char *stringtab = NULL; | |
58abdf88 | 160 | static long stringtab_length = 0; |
e2a03548 | 161 | |
a14ed312 | 162 | extern void stabsread_clear_cache (void); |
7be570e7 | 163 | |
5e2b427d UW |
164 | static struct type *coff_read_struct_type (int, int, int, |
165 | struct objfile *); | |
c906108c | 166 | |
a14ed312 | 167 | static struct type *decode_base_type (struct coff_symbol *, |
aff410f1 MS |
168 | unsigned int, |
169 | union internal_auxent *, | |
5e2b427d | 170 | struct objfile *); |
c906108c | 171 | |
a14ed312 | 172 | static struct type *decode_type (struct coff_symbol *, unsigned int, |
5e2b427d UW |
173 | union internal_auxent *, |
174 | struct objfile *); | |
c906108c | 175 | |
a14ed312 KB |
176 | static struct type *decode_function_type (struct coff_symbol *, |
177 | unsigned int, | |
5e2b427d UW |
178 | union internal_auxent *, |
179 | struct objfile *); | |
c906108c | 180 | |
5e2b427d UW |
181 | static struct type *coff_read_enum_type (int, int, int, |
182 | struct objfile *); | |
c906108c | 183 | |
a14ed312 KB |
184 | static struct symbol *process_coff_symbol (struct coff_symbol *, |
185 | union internal_auxent *, | |
186 | struct objfile *); | |
c906108c | 187 | |
a14ed312 | 188 | static void patch_opaque_types (struct symtab *); |
c906108c | 189 | |
a9e48095 | 190 | static void enter_linenos (file_ptr, int, int, struct objfile *); |
c906108c | 191 | |
a9e48095 | 192 | static int init_lineno (bfd *, file_ptr, file_ptr, gdb::unique_xmalloc_ptr<char> *); |
c906108c | 193 | |
a14ed312 | 194 | static char *getsymname (struct internal_syment *); |
c906108c | 195 | |
9f37bbcc | 196 | static const char *coff_getfilename (union internal_auxent *); |
c906108c | 197 | |
a9e48095 | 198 | static int init_stringtab (bfd *, file_ptr, gdb::unique_xmalloc_ptr<char> *); |
c906108c | 199 | |
a14ed312 | 200 | static void read_one_sym (struct coff_symbol *, |
aff410f1 MS |
201 | struct internal_syment *, |
202 | union internal_auxent *); | |
c906108c | 203 | |
8dddcb8f | 204 | static void coff_symtab_read (minimal_symbol_reader &, |
a9e48095 JN |
205 | file_ptr, unsigned int, struct objfile *); |
206 | ||
c906108c SS |
207 | /* We are called once per section from coff_symfile_read. We |
208 | need to examine each section we are passed, check to see | |
209 | if it is something we are interested in processing, and | |
210 | if so, stash away some access information for the section. | |
211 | ||
212 | FIXME: The section names should not be hardwired strings (what | |
213 | should they be? I don't think most object file formats have enough | |
214 | section flags to specify what kind of debug section it is | |
215 | -kingdon). */ | |
216 | ||
217 | static void | |
12b9c64f | 218 | coff_locate_sections (bfd *abfd, asection *sectp, void *csip) |
c906108c | 219 | { |
52f0bd74 | 220 | struct coff_symfile_info *csi; |
c906108c SS |
221 | const char *name; |
222 | ||
223 | csi = (struct coff_symfile_info *) csip; | |
fd361982 | 224 | name = bfd_section_name (sectp); |
7ecb6532 | 225 | if (strcmp (name, ".text") == 0) |
c906108c | 226 | { |
fd361982 AM |
227 | csi->textaddr = bfd_section_vma (sectp); |
228 | csi->textsize += bfd_section_size (sectp); | |
c906108c | 229 | } |
61012eef | 230 | else if (startswith (name, ".text")) |
c906108c | 231 | { |
fd361982 | 232 | csi->textsize += bfd_section_size (sectp); |
c906108c | 233 | } |
7ecb6532 | 234 | else if (strcmp (name, ".stabstr") == 0) |
c906108c SS |
235 | { |
236 | csi->stabstrsect = sectp; | |
237 | } | |
61012eef | 238 | else if (startswith (name, ".stab")) |
c906108c SS |
239 | { |
240 | const char *s; | |
241 | ||
242 | /* We can have multiple .stab sections if linked with | |
dda83cd7 | 243 | --split-by-reloc. */ |
c906108c | 244 | for (s = name + sizeof ".stab" - 1; *s != '\0'; s++) |
c5aa993b | 245 | if (!isdigit (*s)) |
c906108c SS |
246 | break; |
247 | if (*s == '\0') | |
e2a03548 | 248 | csi->stabsects->push_back (sectp); |
c906108c SS |
249 | } |
250 | } | |
251 | ||
252 | /* Return the section_offsets* that CS points to. */ | |
a14ed312 | 253 | static int cs_to_section (struct coff_symbol *, struct objfile *); |
c906108c | 254 | |
ddfc4ef1 | 255 | struct coff_find_targ_sec_arg |
c5aa993b JM |
256 | { |
257 | int targ_index; | |
258 | asection **resultp; | |
259 | }; | |
c906108c | 260 | |
c5aa993b | 261 | static void |
12b9c64f | 262 | find_targ_sec (bfd *abfd, asection *sect, void *obj) |
c906108c | 263 | { |
ddfc4ef1 | 264 | struct coff_find_targ_sec_arg *args = (struct coff_find_targ_sec_arg *) obj; |
c5504eaf | 265 | |
c906108c SS |
266 | if (sect->target_index == args->targ_index) |
267 | *args->resultp = sect; | |
268 | } | |
269 | ||
fbcebcb1 DJ |
270 | /* Return the bfd_section that CS points to. */ |
271 | static struct bfd_section* | |
272 | cs_to_bfd_section (struct coff_symbol *cs, struct objfile *objfile) | |
c906108c SS |
273 | { |
274 | asection *sect = NULL; | |
ddfc4ef1 | 275 | struct coff_find_targ_sec_arg args; |
c906108c SS |
276 | |
277 | args.targ_index = cs->c_secnum; | |
278 | args.resultp = § | |
98badbfd | 279 | bfd_map_over_sections (objfile->obfd.get (), find_targ_sec, &args); |
fbcebcb1 DJ |
280 | return sect; |
281 | } | |
282 | ||
283 | /* Return the section number (SECT_OFF_*) that CS points to. */ | |
284 | static int | |
285 | cs_to_section (struct coff_symbol *cs, struct objfile *objfile) | |
286 | { | |
287 | asection *sect = cs_to_bfd_section (cs, objfile); | |
c5504eaf | 288 | |
05cfdb42 DJ |
289 | if (sect == NULL) |
290 | return SECT_OFF_TEXT (objfile); | |
98badbfd | 291 | return gdb_bfd_section_index (objfile->obfd.get (), sect); |
c906108c SS |
292 | } |
293 | ||
294 | /* Return the address of the section of a COFF symbol. */ | |
295 | ||
a14ed312 | 296 | static CORE_ADDR cs_section_address (struct coff_symbol *, bfd *); |
c906108c SS |
297 | |
298 | static CORE_ADDR | |
fba45db2 | 299 | cs_section_address (struct coff_symbol *cs, bfd *abfd) |
c906108c SS |
300 | { |
301 | asection *sect = NULL; | |
ddfc4ef1 | 302 | struct coff_find_targ_sec_arg args; |
c906108c SS |
303 | CORE_ADDR addr = 0; |
304 | ||
305 | args.targ_index = cs->c_secnum; | |
306 | args.resultp = § | |
307 | bfd_map_over_sections (abfd, find_targ_sec, &args); | |
308 | if (sect != NULL) | |
fd361982 | 309 | addr = bfd_section_vma (sect); |
c906108c SS |
310 | return addr; |
311 | } | |
312 | ||
313 | /* Look up a coff type-number index. Return the address of the slot | |
314 | where the type for that index is stored. | |
315 | The type-number is in INDEX. | |
316 | ||
317 | This can be used for finding the type associated with that index | |
318 | or for associating a new type with the index. */ | |
319 | ||
320 | static struct type ** | |
aa1ee363 | 321 | coff_lookup_type (int index) |
c906108c SS |
322 | { |
323 | if (index >= type_vector_length) | |
324 | { | |
325 | int old_vector_length = type_vector_length; | |
326 | ||
327 | type_vector_length *= 2; | |
c5aa993b | 328 | if (index /* is still */ >= type_vector_length) |
c906108c SS |
329 | type_vector_length = index * 2; |
330 | ||
331 | type_vector = (struct type **) | |
332 | xrealloc ((char *) type_vector, | |
333 | type_vector_length * sizeof (struct type *)); | |
334 | memset (&type_vector[old_vector_length], 0, | |
c5aa993b | 335 | (type_vector_length - old_vector_length) * sizeof (struct type *)); |
c906108c SS |
336 | } |
337 | return &type_vector[index]; | |
338 | } | |
339 | ||
340 | /* Make sure there is a type allocated for type number index | |
341 | and return the type object. | |
342 | This can create an empty (zeroed) type object. */ | |
343 | ||
344 | static struct type * | |
fba45db2 | 345 | coff_alloc_type (int index) |
c906108c | 346 | { |
52f0bd74 AC |
347 | struct type **type_addr = coff_lookup_type (index); |
348 | struct type *type = *type_addr; | |
c906108c SS |
349 | |
350 | /* If we are referring to a type not known at all yet, | |
351 | allocate an empty type for it. | |
352 | We will fill it in later if we find out how. */ | |
353 | if (type == NULL) | |
354 | { | |
76fc0f62 | 355 | type = type_allocator (coffread_objfile, language_c).new_type (); |
c906108c SS |
356 | *type_addr = type; |
357 | } | |
358 | return type; | |
359 | } | |
360 | \f | |
c906108c SS |
361 | /* Start a new symtab for a new source file. |
362 | This is called when a COFF ".file" symbol is seen; | |
363 | it indicates the start of data for one original source file. */ | |
364 | ||
365 | static void | |
59dfe8ad | 366 | coff_start_compunit_symtab (struct objfile *objfile, const char *name) |
c906108c | 367 | { |
5985ac61 | 368 | within_function = 0; |
59dfe8ad SM |
369 | start_compunit_symtab (objfile, |
370 | name, | |
c5aa993b | 371 | /* We never know the directory name for COFF. */ |
59dfe8ad | 372 | NULL, |
2c99ee5c | 373 | /* The start address is irrelevant, since we call |
59dfe8ad SM |
374 | set_last_source_start_addr in coff_end_compunit_symtab. */ |
375 | 0, | |
5ffa0793 | 376 | /* Let buildsym.c deduce the language for this symtab. */ |
59dfe8ad | 377 | language_unknown); |
c906108c | 378 | record_debugformat ("COFF"); |
c906108c SS |
379 | } |
380 | ||
381 | /* Save the vital information from when starting to read a file, | |
382 | for use when closing off the current file. | |
aff410f1 MS |
383 | NAME is the file name the symbols came from, START_ADDR is the |
384 | first text address for the file, and SIZE is the number of bytes of | |
385 | text. */ | |
c906108c SS |
386 | |
387 | static void | |
9f37bbcc | 388 | complete_symtab (const char *name, CORE_ADDR start_addr, unsigned int size) |
c906108c | 389 | { |
46212e0b | 390 | set_last_source_file (name); |
c906108c SS |
391 | current_source_start_addr = start_addr; |
392 | current_source_end_addr = start_addr + size; | |
c906108c SS |
393 | } |
394 | ||
aff410f1 MS |
395 | /* Finish the symbol definitions for one main source file, close off |
396 | all the lexical contexts for that file (creating struct block's for | |
397 | them), then make the struct symtab for that file and put it in the | |
398 | list of all such. */ | |
c906108c SS |
399 | |
400 | static void | |
59dfe8ad | 401 | coff_end_compunit_symtab (struct objfile *objfile) |
c906108c | 402 | { |
2c99ee5c | 403 | set_last_source_start_addr (current_source_start_addr); |
c906108c | 404 | |
83bad316 | 405 | end_compunit_symtab (current_source_end_addr); |
c906108c | 406 | |
aff410f1 | 407 | /* Reinitialize for beginning of new file. */ |
46212e0b | 408 | set_last_source_file (NULL); |
c906108c SS |
409 | } |
410 | \f | |
af312be7 JB |
411 | /* The linker sometimes generates some non-function symbols inside |
412 | functions referencing variables imported from another DLL. | |
413 | Return nonzero if the given symbol corresponds to one of them. */ | |
414 | ||
415 | static int | |
416 | is_import_fixup_symbol (struct coff_symbol *cs, | |
417 | enum minimal_symbol_type type) | |
418 | { | |
85102364 | 419 | /* The following is a bit of a heuristic using the characteristics |
af312be7 JB |
420 | of these fixup symbols, but should work well in practice... */ |
421 | int i; | |
422 | ||
423 | /* Must be a non-static text symbol. */ | |
424 | if (type != mst_text) | |
425 | return 0; | |
426 | ||
427 | /* Must be a non-function symbol. */ | |
428 | if (ISFCN (cs->c_type)) | |
429 | return 0; | |
430 | ||
431 | /* The name must start with "__fu<digits>__". */ | |
61012eef | 432 | if (!startswith (cs->c_name, "__fu")) |
af312be7 JB |
433 | return 0; |
434 | if (! isdigit (cs->c_name[4])) | |
435 | return 0; | |
436 | for (i = 5; cs->c_name[i] != '\0' && isdigit (cs->c_name[i]); i++) | |
437 | /* Nothing, just incrementing index past all digits. */; | |
438 | if (cs->c_name[i] != '_' || cs->c_name[i + 1] != '_') | |
439 | return 0; | |
440 | ||
441 | return 1; | |
442 | } | |
443 | ||
fbcebcb1 | 444 | static struct minimal_symbol * |
8dddcb8f | 445 | record_minimal_symbol (minimal_symbol_reader &reader, |
9675da25 | 446 | struct coff_symbol *cs, unrelocated_addr address, |
fbcebcb1 DJ |
447 | enum minimal_symbol_type type, int section, |
448 | struct objfile *objfile) | |
c906108c | 449 | { |
aff410f1 | 450 | /* We don't want TDESC entry points in the minimal symbol table. */ |
fbcebcb1 DJ |
451 | if (cs->c_name[0] == '@') |
452 | return NULL; | |
c906108c | 453 | |
af312be7 JB |
454 | if (is_import_fixup_symbol (cs, type)) |
455 | { | |
456 | /* Because the value of these symbols is within a function code | |
457 | range, these symbols interfere with the symbol-from-address | |
30baf67b | 458 | reverse lookup; this manifests itself in backtraces, or any |
af312be7 JB |
459 | other commands that prints symbolic addresses. Just pretend |
460 | these symbols do not exist. */ | |
461 | return NULL; | |
462 | } | |
463 | ||
31edb802 | 464 | return reader.record_full (cs->c_name, true, address, type, section); |
c906108c SS |
465 | } |
466 | \f | |
467 | /* coff_symfile_init () | |
468 | is the coff-specific initialization routine for reading symbols. | |
469 | It is passed a struct objfile which contains, among other things, | |
470 | the BFD for the file whose symbols are being read, and a slot for | |
471 | a pointer to "private data" which we fill with cookies and other | |
472 | treats for coff_symfile_read (). | |
473 | ||
aff410f1 MS |
474 | We will only be called if this is a COFF or COFF-like file. BFD |
475 | handles figuring out the format of the file, and code in symtab.c | |
c906108c SS |
476 | uses BFD's determination to vector to us. |
477 | ||
aff410f1 MS |
478 | The ultimate result is a new symtab (or, FIXME, eventually a |
479 | psymtab). */ | |
c906108c SS |
480 | |
481 | static void | |
fba45db2 | 482 | coff_symfile_init (struct objfile *objfile) |
c906108c | 483 | { |
aff410f1 | 484 | /* Allocate struct to keep track of the symfile. */ |
24699405 | 485 | coff_objfile_data_key.emplace (objfile); |
c906108c SS |
486 | } |
487 | ||
aff410f1 MS |
488 | /* This function is called for every section; it finds the outer |
489 | limits of the line table (minimum and maximum file offset) so that | |
490 | the mainline code can read the whole thing for efficiency. */ | |
c906108c | 491 | |
c906108c | 492 | static void |
7be0c536 | 493 | find_linenos (bfd *abfd, struct bfd_section *asect, void *vpinfo) |
c906108c SS |
494 | { |
495 | struct coff_symfile_info *info; | |
496 | int size, count; | |
497 | file_ptr offset, maxoff; | |
498 | ||
aff410f1 | 499 | /* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */ |
c906108c | 500 | count = asect->lineno_count; |
aff410f1 | 501 | /* End of warning. */ |
c906108c SS |
502 | |
503 | if (count == 0) | |
504 | return; | |
505 | size = count * local_linesz; | |
506 | ||
c5aa993b | 507 | info = (struct coff_symfile_info *) vpinfo; |
aff410f1 | 508 | /* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */ |
c906108c | 509 | offset = asect->line_filepos; |
aff410f1 | 510 | /* End of warning. */ |
c906108c SS |
511 | |
512 | if (offset < info->min_lineno_offset || info->min_lineno_offset == 0) | |
513 | info->min_lineno_offset = offset; | |
514 | ||
515 | maxoff = offset + size; | |
516 | if (maxoff > info->max_lineno_offset) | |
517 | info->max_lineno_offset = maxoff; | |
518 | } | |
519 | ||
520 | ||
28c5801a TT |
521 | /* A helper function for coff_symfile_read that reads minimal |
522 | symbols. It may also read other forms of symbol as well. */ | |
523 | ||
524 | static void | |
525 | coff_read_minsyms (file_ptr symtab_offset, unsigned int nsyms, | |
526 | struct objfile *objfile) | |
527 | ||
528 | { | |
529 | /* If minimal symbols were already read, and if we know we aren't | |
530 | going to read any other kind of symbol here, then we can just | |
531 | return. */ | |
532 | if (objfile->per_bfd->minsyms_read && pe_file && nsyms == 0) | |
533 | return; | |
534 | ||
535 | minimal_symbol_reader reader (objfile); | |
536 | ||
537 | if (pe_file && nsyms == 0) | |
538 | { | |
539 | /* We've got no debugging symbols, but it's a portable | |
540 | executable, so try to read the export table. */ | |
541 | read_pe_exported_syms (reader, objfile); | |
542 | } | |
543 | else | |
544 | { | |
545 | /* Now that the executable file is positioned at symbol table, | |
546 | process it and define symbols accordingly. */ | |
547 | coff_symtab_read (reader, symtab_offset, nsyms, objfile); | |
548 | } | |
549 | ||
550 | /* Install any minimal symbols that have been collected as the | |
551 | current minimal symbols for this objfile. */ | |
552 | ||
553 | reader.install (); | |
554 | ||
555 | if (pe_file) | |
556 | { | |
557 | for (minimal_symbol *msym : objfile->msymbols ()) | |
558 | { | |
559 | const char *name = msym->linkage_name (); | |
560 | ||
561 | /* If the minimal symbols whose name are prefixed by "__imp_" | |
562 | or "_imp_", get rid of the prefix, and search the minimal | |
563 | symbol in OBJFILE. Note that 'maintenance print msymbols' | |
564 | shows that type of these "_imp_XXXX" symbols is mst_data. */ | |
565 | if (msym->type () == mst_data) | |
566 | { | |
567 | const char *name1 = NULL; | |
568 | ||
569 | if (startswith (name, "_imp_")) | |
570 | name1 = name + 5; | |
571 | else if (startswith (name, "__imp_")) | |
572 | name1 = name + 6; | |
573 | if (name1 != NULL) | |
574 | { | |
98badbfd TT |
575 | int lead |
576 | = bfd_get_symbol_leading_char (objfile->obfd.get ()); | |
28c5801a TT |
577 | struct bound_minimal_symbol found; |
578 | ||
579 | if (lead != '\0' && *name1 == lead) | |
580 | name1 += 1; | |
581 | ||
582 | found = lookup_minimal_symbol (name1, NULL, objfile); | |
583 | ||
584 | /* If found, there are symbols named "_imp_foo" and "foo" | |
585 | respectively in OBJFILE. Set the type of symbol "foo" | |
586 | as 'mst_solib_trampoline'. */ | |
587 | if (found.minsym != NULL | |
588 | && found.minsym->type () == mst_text) | |
589 | found.minsym->set_type (mst_solib_trampoline); | |
590 | } | |
591 | } | |
592 | } | |
593 | } | |
594 | } | |
595 | ||
c906108c SS |
596 | /* The BFD for this file -- only good while we're actively reading |
597 | symbols into a psymtab or a symtab. */ | |
598 | ||
599 | static bfd *symfile_bfd; | |
600 | ||
601 | /* Read a symbol file, after initialization by coff_symfile_init. */ | |
602 | ||
c906108c | 603 | static void |
b15cc25c | 604 | coff_symfile_read (struct objfile *objfile, symfile_add_flags symfile_flags) |
c906108c SS |
605 | { |
606 | struct coff_symfile_info *info; | |
98badbfd | 607 | bfd *abfd = objfile->obfd.get (); |
c906108c | 608 | coff_data_type *cdata = coff_data (abfd); |
b16c44de | 609 | const char *filename = bfd_get_filename (abfd); |
52f0bd74 | 610 | int val; |
745b8ca0 | 611 | unsigned int num_symbols; |
a9e48095 JN |
612 | file_ptr symtab_offset; |
613 | file_ptr stringtab_offset; | |
614 | unsigned int stabstrsize; | |
c2d11a7d | 615 | |
24699405 | 616 | info = coff_objfile_data_key.get (objfile); |
aff410f1 | 617 | symfile_bfd = abfd; /* Kludge for swap routines. */ |
c906108c | 618 | |
e2a03548 TT |
619 | std::vector<asection *> stabsects; |
620 | scoped_restore restore_stabsects | |
621 | = make_scoped_restore (&info->stabsects, &stabsects); | |
622 | ||
c906108c | 623 | /* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */ |
c5aa993b JM |
624 | num_symbols = bfd_get_symcount (abfd); /* How many syms */ |
625 | symtab_offset = cdata->sym_filepos; /* Symbol table file offset */ | |
626 | stringtab_offset = symtab_offset + /* String table file offset */ | |
627 | num_symbols * cdata->local_symesz; | |
c906108c SS |
628 | |
629 | /* Set a few file-statics that give us specific information about | |
630 | the particular COFF file format we're reading. */ | |
c906108c SS |
631 | local_n_btmask = cdata->local_n_btmask; |
632 | local_n_btshft = cdata->local_n_btshft; | |
c5aa993b | 633 | local_n_tmask = cdata->local_n_tmask; |
c906108c | 634 | local_n_tshift = cdata->local_n_tshift; |
c5aa993b JM |
635 | local_linesz = cdata->local_linesz; |
636 | local_symesz = cdata->local_symesz; | |
637 | local_auxesz = cdata->local_auxesz; | |
c906108c SS |
638 | |
639 | /* Allocate space for raw symbol and aux entries, based on their | |
640 | space requirements as reported by BFD. */ | |
e2a03548 TT |
641 | gdb::def_vector<char> temp_storage (cdata->local_symesz |
642 | + cdata->local_auxesz); | |
643 | temp_sym = temp_storage.data (); | |
c906108c | 644 | temp_aux = temp_sym + cdata->local_symesz; |
c906108c SS |
645 | |
646 | /* We need to know whether this is a PE file, because in PE files, | |
647 | unlike standard COFF files, symbol values are stored as offsets | |
648 | from the section address, rather than as absolute addresses. | |
649 | FIXME: We should use BFD to read the symbol table, and thus avoid | |
650 | this problem. */ | |
0d06e24b | 651 | pe_file = |
98badbfd TT |
652 | startswith (bfd_get_target (objfile->obfd.get ()), "pe") |
653 | || startswith (bfd_get_target (objfile->obfd.get ()), "epoc-pe"); | |
c906108c | 654 | |
aff410f1 | 655 | /* End of warning. */ |
c906108c | 656 | |
c906108c SS |
657 | info->min_lineno_offset = 0; |
658 | info->max_lineno_offset = 0; | |
c906108c | 659 | |
ebeb39fe JB |
660 | /* Only read line number information if we have symbols. |
661 | ||
662 | On Windows NT, some of the system's DLL's have sections with | |
663 | PointerToLinenumbers fields that are non-zero, but point at | |
664 | random places within the image file. (In the case I found, | |
665 | KERNEL32.DLL's .text section has a line number info pointer that | |
666 | points into the middle of the string `lib\\i386\kernel32.dll'.) | |
667 | ||
668 | However, these DLL's also have no symbols. The line number | |
669 | tables are meaningless without symbols. And in fact, GDB never | |
670 | uses the line number information unless there are symbols. So we | |
671 | can avoid spurious error messages (and maybe run a little | |
672 | faster!) by not even reading the line number table unless we have | |
673 | symbols. */ | |
e2a03548 TT |
674 | scoped_restore restore_linetab = make_scoped_restore (&linetab); |
675 | gdb::unique_xmalloc_ptr<char> linetab_storage; | |
ebeb39fe JB |
676 | if (num_symbols > 0) |
677 | { | |
678 | /* Read the line number table, all at once. */ | |
679 | bfd_map_over_sections (abfd, find_linenos, (void *) info); | |
680 | ||
ebeb39fe | 681 | val = init_lineno (abfd, info->min_lineno_offset, |
dda83cd7 | 682 | info->max_lineno_offset - info->min_lineno_offset, |
e2a03548 | 683 | &linetab_storage); |
ebeb39fe | 684 | if (val < 0) |
dda83cd7 | 685 | error (_("\"%s\": error reading line numbers."), filename); |
ebeb39fe | 686 | } |
c906108c SS |
687 | |
688 | /* Now read the string table, all at once. */ | |
689 | ||
e2a03548 TT |
690 | scoped_restore restore_stringtab = make_scoped_restore (&stringtab); |
691 | gdb::unique_xmalloc_ptr<char> stringtab_storage; | |
692 | val = init_stringtab (abfd, stringtab_offset, &stringtab_storage); | |
c906108c | 693 | if (val < 0) |
b926417a | 694 | error (_("\"%s\": can't get string table"), filename); |
c906108c | 695 | |
28c5801a | 696 | coff_read_minsyms (symtab_offset, num_symbols, objfile); |
303c5ee1 | 697 | |
97cbe998 SDJ |
698 | if (!(objfile->flags & OBJF_READNEVER)) |
699 | bfd_map_over_sections (abfd, coff_locate_sections, (void *) info); | |
c906108c | 700 | |
e2a03548 | 701 | if (!info->stabsects->empty()) |
c906108c | 702 | { |
c5aa993b | 703 | if (!info->stabstrsect) |
b83266a0 | 704 | { |
3e43a32a MS |
705 | error (_("The debugging information in `%s' is corrupted.\nThe " |
706 | "file has a `.stabs' section, but no `.stabstr' section."), | |
b926417a | 707 | filename); |
b83266a0 SS |
708 | } |
709 | ||
c906108c | 710 | /* FIXME: dubious. Why can't we use something normal like |
dda83cd7 | 711 | bfd_get_section_contents? */ |
fd361982 | 712 | stabstrsize = bfd_section_size (info->stabstrsect); |
c906108c SS |
713 | |
714 | coffstab_build_psymtabs (objfile, | |
c906108c | 715 | info->textaddr, info->textsize, |
e2a03548 | 716 | *info->stabsects, |
c906108c SS |
717 | info->stabstrsect->filepos, stabstrsize); |
718 | } | |
aecbdf5f TT |
719 | |
720 | if (dwarf2_initialize_objfile (objfile)) | |
42a076f0 | 721 | { |
aecbdf5f | 722 | /* Nothing. */ |
42a076f0 | 723 | } |
c906108c | 724 | |
9cce227f | 725 | /* Try to add separate debug file if no symbols table found. */ |
7628a997 AB |
726 | else if (!objfile->has_partial_symbols () |
727 | && objfile->separate_debug_objfile == NULL | |
728 | && objfile->separate_debug_objfile_backlink == NULL) | |
9cce227f | 729 | { |
27807da5 AB |
730 | if (objfile->find_and_add_separate_symbol_file (symfile_flags)) |
731 | gdb_assert (objfile->separate_debug_objfile != nullptr); | |
9cce227f | 732 | } |
c906108c SS |
733 | } |
734 | ||
735 | static void | |
fba45db2 | 736 | coff_new_init (struct objfile *ignore) |
c906108c SS |
737 | { |
738 | } | |
739 | ||
aff410f1 MS |
740 | /* Perform any local cleanups required when we are done with a |
741 | particular objfile. I.E, we are in the process of discarding all | |
742 | symbol information for an objfile, freeing up all memory held for | |
743 | it, and unlinking the objfile struct from the global list of known | |
744 | objfiles. */ | |
c906108c SS |
745 | |
746 | static void | |
fba45db2 | 747 | coff_symfile_finish (struct objfile *objfile) |
c906108c | 748 | { |
aff410f1 | 749 | /* Let stabs reader clean up. */ |
7be570e7 | 750 | stabsread_clear_cache (); |
c906108c | 751 | } |
c906108c | 752 | \f |
c5aa993b | 753 | |
c906108c SS |
754 | /* Given pointers to a symbol table in coff style exec file, |
755 | analyze them and create struct symtab's describing the symbols. | |
756 | NSYMS is the number of symbols in the symbol table. | |
757 | We read them one at a time using read_one_sym (). */ | |
758 | ||
759 | static void | |
8dddcb8f | 760 | coff_symtab_read (minimal_symbol_reader &reader, |
a9e48095 | 761 | file_ptr symtab_offset, unsigned int nsyms, |
fba45db2 | 762 | struct objfile *objfile) |
c906108c | 763 | { |
08feed99 | 764 | struct gdbarch *gdbarch = objfile->arch (); |
875e5398 | 765 | struct context_stack *newobj = nullptr; |
c906108c | 766 | struct coff_symbol coff_symbol; |
52f0bd74 | 767 | struct coff_symbol *cs = &coff_symbol; |
c906108c SS |
768 | static struct internal_syment main_sym; |
769 | static union internal_auxent main_aux; | |
770 | struct coff_symbol fcn_cs_saved; | |
771 | static struct internal_syment fcn_sym_saved; | |
772 | static union internal_auxent fcn_aux_saved; | |
c906108c SS |
773 | /* A .file is open. */ |
774 | int in_source_file = 0; | |
775 | int next_file_symnum = -1; | |
776 | /* Name of the current file. */ | |
9f37bbcc | 777 | const char *filestring = ""; |
c906108c SS |
778 | int depth = 0; |
779 | int fcn_first_line = 0; | |
b9179dbc | 780 | CORE_ADDR fcn_first_line_addr = 0; |
c906108c SS |
781 | int fcn_last_line = 0; |
782 | int fcn_start_addr = 0; | |
783 | long fcn_line_ptr = 0; | |
784 | int val; | |
785 | CORE_ADDR tmpaddr; | |
05cfdb42 | 786 | struct minimal_symbol *msym; |
c906108c | 787 | |
4735f0ed TT |
788 | scoped_free_pendings free_pending; |
789 | ||
aff410f1 | 790 | /* Position to read the symbol table. */ |
98badbfd | 791 | val = bfd_seek (objfile->obfd.get (), symtab_offset, 0); |
c906108c | 792 | if (val < 0) |
4262abfb | 793 | perror_with_name (objfile_name (objfile)); |
c906108c | 794 | |
dd707e8e | 795 | coffread_objfile = objfile; |
98badbfd | 796 | nlist_bfd_global = objfile->obfd.get (); |
c906108c | 797 | nlist_nsyms_global = nsyms; |
46212e0b | 798 | set_last_source_file (NULL); |
c906108c SS |
799 | memset (opaque_type_chain, 0, sizeof opaque_type_chain); |
800 | ||
aff410f1 | 801 | if (type_vector) /* Get rid of previous one. */ |
b8c9b27d | 802 | xfree (type_vector); |
fc474241 | 803 | type_vector_length = INITIAL_TYPE_VECTOR_LENGTH; |
8d749320 | 804 | type_vector = XCNEWVEC (struct type *, type_vector_length); |
c906108c | 805 | |
59dfe8ad | 806 | coff_start_compunit_symtab (objfile, ""); |
c906108c SS |
807 | |
808 | symnum = 0; | |
809 | while (symnum < nsyms) | |
810 | { | |
811 | QUIT; /* Make this command interruptable. */ | |
812 | ||
813 | read_one_sym (cs, &main_sym, &main_aux); | |
814 | ||
815 | if (cs->c_symnum == next_file_symnum && cs->c_sclass != C_FILE) | |
816 | { | |
46212e0b | 817 | if (get_last_source_file ()) |
59dfe8ad | 818 | coff_end_compunit_symtab (objfile); |
c906108c | 819 | |
59dfe8ad SM |
820 | coff_start_compunit_symtab (objfile, "_globals_"); |
821 | /* coff_start_compunit_symtab will set the language of this symtab to | |
969107c5 EZ |
822 | language_unknown, since such a ``file name'' is not |
823 | recognized. Override that with the minimal language to | |
824 | allow printing values in this symtab. */ | |
3c65e5b3 | 825 | get_current_subfile ()->language = language_minimal; |
c906108c | 826 | complete_symtab ("_globals_", 0, 0); |
aff410f1 MS |
827 | /* Done with all files, everything from here on out is |
828 | globals. */ | |
c906108c SS |
829 | } |
830 | ||
aff410f1 MS |
831 | /* Special case for file with type declarations only, no |
832 | text. */ | |
46212e0b | 833 | if (!get_last_source_file () && SDB_TYPE (cs->c_type) |
c906108c SS |
834 | && cs->c_secnum == N_DEBUG) |
835 | complete_symtab (filestring, 0, 0); | |
836 | ||
837 | /* Typedefs should not be treated as symbol definitions. */ | |
838 | if (ISFCN (cs->c_type) && cs->c_sclass != C_TPDEF) | |
839 | { | |
aff410f1 MS |
840 | /* Record all functions -- external and static -- in |
841 | minsyms. */ | |
fbcebcb1 | 842 | int section = cs_to_section (cs, objfile); |
c5504eaf | 843 | |
2273f0ac | 844 | tmpaddr = cs->c_value; |
156f2366 EZ |
845 | /* Don't record unresolved symbols. */ |
846 | if (!(cs->c_secnum <= 0 && cs->c_value == 0)) | |
9675da25 TT |
847 | record_minimal_symbol (reader, cs, |
848 | unrelocated_addr (tmpaddr), | |
849 | mst_text, section, objfile); | |
c906108c SS |
850 | |
851 | fcn_line_ptr = main_aux.x_sym.x_fcnary.x_fcn.x_lnnoptr; | |
852 | fcn_start_addr = tmpaddr; | |
853 | fcn_cs_saved = *cs; | |
854 | fcn_sym_saved = main_sym; | |
855 | fcn_aux_saved = main_aux; | |
856 | continue; | |
857 | } | |
858 | ||
859 | switch (cs->c_sclass) | |
860 | { | |
c5aa993b JM |
861 | case C_EFCN: |
862 | case C_EXTDEF: | |
863 | case C_ULABEL: | |
864 | case C_USTATIC: | |
865 | case C_LINE: | |
866 | case C_ALIAS: | |
867 | case C_HIDDEN: | |
b98664d3 | 868 | complaint (_("Bad n_sclass for symbol %s"), |
23136709 | 869 | cs->c_name); |
c5aa993b | 870 | break; |
c906108c | 871 | |
c5aa993b | 872 | case C_FILE: |
aff410f1 MS |
873 | /* c_value field contains symnum of next .file entry in |
874 | table or symnum of first global after last .file. */ | |
c5aa993b JM |
875 | next_file_symnum = cs->c_value; |
876 | if (cs->c_naux > 0) | |
877 | filestring = coff_getfilename (&main_aux); | |
878 | else | |
879 | filestring = ""; | |
880 | ||
881 | /* Complete symbol table for last object file | |
882 | containing debugging information. */ | |
46212e0b | 883 | if (get_last_source_file ()) |
c5aa993b | 884 | { |
59dfe8ad SM |
885 | coff_end_compunit_symtab (objfile); |
886 | coff_start_compunit_symtab (objfile, filestring); | |
c5aa993b JM |
887 | } |
888 | in_source_file = 1; | |
889 | break; | |
c906108c | 890 | |
aff410f1 MS |
891 | /* C_LABEL is used for labels and static functions. |
892 | Including it here allows gdb to see static functions when | |
893 | no debug info is available. */ | |
c5aa993b | 894 | case C_LABEL: |
aff410f1 MS |
895 | /* However, labels within a function can make weird |
896 | backtraces, so filter them out (from phdm@macqel.be). */ | |
c5aa993b JM |
897 | if (within_function) |
898 | break; | |
d182e398 | 899 | [[fallthrough]]; |
c5aa993b JM |
900 | case C_STAT: |
901 | case C_THUMBLABEL: | |
902 | case C_THUMBSTAT: | |
903 | case C_THUMBSTATFUNC: | |
904 | if (cs->c_name[0] == '.') | |
905 | { | |
7ecb6532 | 906 | if (strcmp (cs->c_name, ".text") == 0) |
c5aa993b | 907 | { |
aff410f1 MS |
908 | /* FIXME: don't wire in ".text" as section name or |
909 | symbol name! */ | |
910 | /* Check for in_source_file deals with case of a | |
911 | file with debugging symbols followed by a later | |
912 | file with no symbols. */ | |
c906108c SS |
913 | if (in_source_file) |
914 | complete_symtab (filestring, | |
6a053cb1 | 915 | (cs->c_value |
b3b3bada | 916 | + objfile->text_section_offset ()), |
c906108c SS |
917 | main_aux.x_scn.x_scnlen); |
918 | in_source_file = 0; | |
919 | } | |
aff410f1 | 920 | /* Flush rest of '.' symbols. */ |
c906108c | 921 | break; |
c5aa993b JM |
922 | } |
923 | else if (!SDB_TYPE (cs->c_type) | |
924 | && cs->c_name[0] == 'L' | |
61012eef GB |
925 | && (startswith (cs->c_name, "LI%") |
926 | || startswith (cs->c_name, "LF%") | |
927 | || startswith (cs->c_name, "LC%") | |
928 | || startswith (cs->c_name, "LP%") | |
929 | || startswith (cs->c_name, "LPB%") | |
930 | || startswith (cs->c_name, "LBB%") | |
931 | || startswith (cs->c_name, "LBE%") | |
932 | || startswith (cs->c_name, "LPBX%"))) | |
c5aa993b JM |
933 | /* At least on a 3b1, gcc generates swbeg and string labels |
934 | that look like this. Ignore them. */ | |
935 | break; | |
86a73007 | 936 | /* For static symbols that don't start with '.'... */ |
d182e398 | 937 | [[fallthrough]]; |
c5aa993b JM |
938 | case C_THUMBEXT: |
939 | case C_THUMBEXTFUNC: | |
940 | case C_EXT: | |
941 | { | |
942 | /* Record it in the minimal symbols regardless of | |
943 | SDB_TYPE. This parallels what we do for other debug | |
944 | formats, and probably is needed to make | |
945 | print_address_symbolic work right without the (now | |
946 | gone) "set fast-symbolic-addr off" kludge. */ | |
c906108c | 947 | |
c5aa993b JM |
948 | enum minimal_symbol_type ms_type; |
949 | int sec; | |
2273f0ac | 950 | CORE_ADDR offset = 0; |
c906108c | 951 | |
c5aa993b JM |
952 | if (cs->c_secnum == N_UNDEF) |
953 | { | |
d4862372 JB |
954 | /* This is a common symbol. We used to rely on |
955 | the target to tell us whether it knows where | |
956 | the symbol has been relocated to, but none of | |
957 | the target implementations actually provided | |
958 | that operation. So we just ignore the symbol, | |
959 | the same way we would do if we had a target-side | |
960 | symbol lookup which returned no match. */ | |
961 | break; | |
c5aa993b | 962 | } |
24b21115 SM |
963 | else if (cs->c_secnum == N_ABS) |
964 | { | |
965 | /* Use the correct minimal symbol type (and don't | |
966 | relocate) for absolute values. */ | |
967 | ms_type = mst_abs; | |
968 | sec = cs_to_section (cs, objfile); | |
969 | tmpaddr = cs->c_value; | |
970 | } | |
c5aa993b JM |
971 | else |
972 | { | |
05cfdb42 | 973 | asection *bfd_section = cs_to_bfd_section (cs, objfile); |
c5504eaf | 974 | |
c5aa993b JM |
975 | sec = cs_to_section (cs, objfile); |
976 | tmpaddr = cs->c_value; | |
24b21115 SM |
977 | /* Statics in a PE file also get relocated. */ |
978 | if (cs->c_sclass == C_EXT | |
979 | || cs->c_sclass == C_THUMBEXTFUNC | |
980 | || cs->c_sclass == C_THUMBEXT | |
981 | || (pe_file && (cs->c_sclass == C_STAT))) | |
6a053cb1 | 982 | offset = objfile->section_offsets[sec]; |
c906108c | 983 | |
05cfdb42 | 984 | if (bfd_section->flags & SEC_CODE) |
c5aa993b | 985 | { |
c5aa993b JM |
986 | ms_type = |
987 | cs->c_sclass == C_EXT || cs->c_sclass == C_THUMBEXTFUNC | |
988 | || cs->c_sclass == C_THUMBEXT ? | |
989 | mst_text : mst_file_text; | |
85ddcc70 | 990 | tmpaddr = gdbarch_addr_bits_remove (gdbarch, tmpaddr); |
b8fbeb18 | 991 | } |
05cfdb42 DJ |
992 | else if (bfd_section->flags & SEC_ALLOC |
993 | && bfd_section->flags & SEC_LOAD) | |
34e924c0 | 994 | { |
c5aa993b | 995 | ms_type = |
aff410f1 MS |
996 | cs->c_sclass == C_EXT || cs->c_sclass == C_THUMBEXT |
997 | ? mst_data : mst_file_data; | |
34e924c0 | 998 | } |
05cfdb42 | 999 | else if (bfd_section->flags & SEC_ALLOC) |
34e924c0 | 1000 | { |
c5aa993b | 1001 | ms_type = |
aff410f1 MS |
1002 | cs->c_sclass == C_EXT || cs->c_sclass == C_THUMBEXT |
1003 | ? mst_bss : mst_file_bss; | |
34e924c0 EZ |
1004 | } |
1005 | else | |
1006 | ms_type = mst_unknown; | |
c5aa993b | 1007 | } |
c906108c | 1008 | |
9675da25 TT |
1009 | msym = record_minimal_symbol (reader, cs, |
1010 | unrelocated_addr (tmpaddr), | |
1011 | ms_type, sec, objfile); | |
05cfdb42 | 1012 | if (msym) |
aff410f1 MS |
1013 | gdbarch_coff_make_msymbol_special (gdbarch, |
1014 | cs->c_sclass, msym); | |
fbcebcb1 | 1015 | |
c5aa993b JM |
1016 | if (SDB_TYPE (cs->c_type)) |
1017 | { | |
1018 | struct symbol *sym; | |
c5504eaf | 1019 | |
c5aa993b | 1020 | sym = process_coff_symbol |
96baa820 | 1021 | (cs, &main_aux, objfile); |
4aeddc50 | 1022 | sym->set_value_longest (tmpaddr + offset); |
a52d653e | 1023 | sym->set_section_index (sec); |
c5aa993b JM |
1024 | } |
1025 | } | |
1026 | break; | |
1027 | ||
1028 | case C_FCN: | |
7ecb6532 | 1029 | if (strcmp (cs->c_name, ".bf") == 0) |
c5aa993b JM |
1030 | { |
1031 | within_function = 1; | |
1032 | ||
aff410f1 MS |
1033 | /* Value contains address of first non-init type |
1034 | code. */ | |
c5aa993b | 1035 | /* main_aux.x_sym.x_misc.x_lnsz.x_lnno |
dda83cd7 | 1036 | contains line number of '{' }. */ |
c5aa993b | 1037 | if (cs->c_naux != 1) |
b98664d3 | 1038 | complaint (_("`.bf' symbol %d has no aux entry"), |
aff410f1 | 1039 | cs->c_symnum); |
c5aa993b JM |
1040 | fcn_first_line = main_aux.x_sym.x_misc.x_lnsz.x_lnno; |
1041 | fcn_first_line_addr = cs->c_value; | |
1042 | ||
1043 | /* Might want to check that locals are 0 and | |
dda83cd7 | 1044 | context_stack_depth is zero, and complain if not. */ |
c5aa993b JM |
1045 | |
1046 | depth = 0; | |
fe978cb0 | 1047 | newobj = push_context (depth, fcn_start_addr); |
c5aa993b | 1048 | fcn_cs_saved.c_name = getsymname (&fcn_sym_saved); |
fe978cb0 | 1049 | newobj->name = |
aff410f1 MS |
1050 | process_coff_symbol (&fcn_cs_saved, |
1051 | &fcn_aux_saved, objfile); | |
c5aa993b | 1052 | } |
7ecb6532 | 1053 | else if (strcmp (cs->c_name, ".ef") == 0) |
c5aa993b | 1054 | { |
b9179dbc | 1055 | if (!within_function) |
8a3fe4f8 | 1056 | error (_("Bad coff function information.")); |
aff410f1 | 1057 | /* The value of .ef is the address of epilogue code; |
dda83cd7 | 1058 | not useful for gdb. */ |
c5aa993b | 1059 | /* { main_aux.x_sym.x_misc.x_lnsz.x_lnno |
dda83cd7 | 1060 | contains number of lines to '}' */ |
c5aa993b | 1061 | |
edb0470b | 1062 | if (outermost_context_p ()) |
aff410f1 | 1063 | { /* We attempted to pop an empty context stack. */ |
b98664d3 | 1064 | complaint (_("`.ef' symbol without matching `.bf' " |
3e43a32a | 1065 | "symbol ignored starting at symnum %d"), |
23136709 | 1066 | cs->c_symnum); |
c5aa993b JM |
1067 | within_function = 0; |
1068 | break; | |
c906108c | 1069 | } |
c5aa993b | 1070 | |
a60f3166 | 1071 | struct context_stack cstk = pop_context (); |
c5aa993b | 1072 | /* Stack must be empty now. */ |
edb0470b | 1073 | if (!outermost_context_p () || newobj == NULL) |
c906108c | 1074 | { |
b98664d3 | 1075 | complaint (_("Unmatched .ef symbol(s) ignored " |
3e43a32a | 1076 | "starting at symnum %d"), |
23136709 | 1077 | cs->c_symnum); |
c5aa993b JM |
1078 | within_function = 0; |
1079 | break; | |
c906108c | 1080 | } |
c5aa993b JM |
1081 | if (cs->c_naux != 1) |
1082 | { | |
b98664d3 | 1083 | complaint (_("`.ef' symbol %d has no aux entry"), |
aff410f1 | 1084 | cs->c_symnum); |
c5aa993b JM |
1085 | fcn_last_line = 0x7FFFFFFF; |
1086 | } | |
1087 | else | |
1088 | { | |
1089 | fcn_last_line = main_aux.x_sym.x_misc.x_lnsz.x_lnno; | |
1090 | } | |
1091 | /* fcn_first_line is the line number of the opening '{'. | |
dda83cd7 SM |
1092 | Do not record it - because it would affect gdb's idea |
1093 | of the line number of the first statement of the | |
1094 | function - except for one-line functions, for which | |
1095 | it is also the line number of all the statements and | |
1096 | of the closing '}', and for which we do not have any | |
1097 | other statement-line-number. */ | |
c5aa993b | 1098 | if (fcn_last_line == 1) |
48e0f38c TT |
1099 | record_line |
1100 | (get_current_subfile (), fcn_first_line, | |
1101 | unrelocated_addr (gdbarch_addr_bits_remove (gdbarch, | |
1102 | fcn_first_line_addr))); | |
c5aa993b | 1103 | else |
aff410f1 MS |
1104 | enter_linenos (fcn_line_ptr, fcn_first_line, |
1105 | fcn_last_line, objfile); | |
c906108c | 1106 | |
c233e9c6 | 1107 | finish_block (cstk.name, cstk.old_blocks, |
a60f3166 | 1108 | NULL, cstk.start_addr, |
c5aa993b JM |
1109 | fcn_cs_saved.c_value |
1110 | + fcn_aux_saved.x_sym.x_misc.x_fsize | |
b3b3bada | 1111 | + objfile->text_section_offset ()); |
c5aa993b JM |
1112 | within_function = 0; |
1113 | } | |
1114 | break; | |
c906108c | 1115 | |
c5aa993b | 1116 | case C_BLOCK: |
7ecb6532 | 1117 | if (strcmp (cs->c_name, ".bb") == 0) |
c5aa993b JM |
1118 | { |
1119 | tmpaddr = cs->c_value; | |
b3b3bada | 1120 | tmpaddr += objfile->text_section_offset (); |
c5aa993b JM |
1121 | push_context (++depth, tmpaddr); |
1122 | } | |
7ecb6532 | 1123 | else if (strcmp (cs->c_name, ".eb") == 0) |
c5aa993b | 1124 | { |
edb0470b | 1125 | if (outermost_context_p ()) |
0963b4bd | 1126 | { /* We attempted to pop an empty context stack. */ |
b98664d3 | 1127 | complaint (_("`.eb' symbol without matching `.bb' " |
3e43a32a | 1128 | "symbol ignored starting at symnum %d"), |
23136709 | 1129 | cs->c_symnum); |
c5aa993b JM |
1130 | break; |
1131 | } | |
c906108c | 1132 | |
a60f3166 TT |
1133 | struct context_stack cstk = pop_context (); |
1134 | if (depth-- != cstk.depth) | |
c5aa993b | 1135 | { |
b98664d3 | 1136 | complaint (_("Mismatched .eb symbol ignored " |
3e43a32a | 1137 | "starting at symnum %d"), |
23136709 | 1138 | symnum); |
c5aa993b JM |
1139 | break; |
1140 | } | |
e148f09d | 1141 | if (*get_local_symbols () && !outermost_context_p ()) |
c5aa993b | 1142 | { |
b3b3bada | 1143 | tmpaddr = cs->c_value + objfile->text_section_offset (); |
c5aa993b | 1144 | /* Make a block for the local symbols within. */ |
c233e9c6 | 1145 | finish_block (0, cstk.old_blocks, NULL, |
a60f3166 | 1146 | cstk.start_addr, tmpaddr); |
c5aa993b JM |
1147 | } |
1148 | /* Now pop locals of block just finished. */ | |
e148f09d | 1149 | *get_local_symbols () = cstk.locals; |
c5aa993b JM |
1150 | } |
1151 | break; | |
c906108c | 1152 | |
c5aa993b | 1153 | default: |
96baa820 | 1154 | process_coff_symbol (cs, &main_aux, objfile); |
c5aa993b | 1155 | break; |
c906108c SS |
1156 | } |
1157 | } | |
1158 | ||
46212e0b | 1159 | if (get_last_source_file ()) |
59dfe8ad | 1160 | coff_end_compunit_symtab (objfile); |
c906108c SS |
1161 | |
1162 | /* Patch up any opaque types (references to types that are not defined | |
1163 | in the file where they are referenced, e.g. "struct foo *bar"). */ | |
43f3e411 | 1164 | { |
b669c953 | 1165 | for (compunit_symtab *cu : objfile->compunits ()) |
d5da8b3c | 1166 | { |
102cc235 | 1167 | for (symtab *s : cu->filetabs ()) |
d5da8b3c TT |
1168 | patch_opaque_types (s); |
1169 | } | |
43f3e411 | 1170 | } |
c906108c | 1171 | |
dd707e8e | 1172 | coffread_objfile = NULL; |
c906108c SS |
1173 | } |
1174 | \f | |
1175 | /* Routines for reading headers and symbols from executable. */ | |
1176 | ||
aff410f1 MS |
1177 | /* Read the next symbol, swap it, and return it in both |
1178 | internal_syment form, and coff_symbol form. Also return its first | |
1179 | auxent, if any, in internal_auxent form, and skip any other | |
1180 | auxents. */ | |
c906108c SS |
1181 | |
1182 | static void | |
aa1ee363 AC |
1183 | read_one_sym (struct coff_symbol *cs, |
1184 | struct internal_syment *sym, | |
1185 | union internal_auxent *aux) | |
c906108c SS |
1186 | { |
1187 | int i; | |
3b016d57 | 1188 | bfd_size_type bytes; |
c906108c SS |
1189 | |
1190 | cs->c_symnum = symnum; | |
226f9f4f | 1191 | bytes = bfd_read (temp_sym, local_symesz, nlist_bfd_global); |
3b016d57 | 1192 | if (bytes != local_symesz) |
4262abfb | 1193 | error (_("%s: error reading symbols"), objfile_name (coffread_objfile)); |
c5aa993b | 1194 | bfd_coff_swap_sym_in (symfile_bfd, temp_sym, (char *) sym); |
c906108c SS |
1195 | cs->c_naux = sym->n_numaux & 0xff; |
1196 | if (cs->c_naux >= 1) | |
1197 | { | |
226f9f4f | 1198 | bytes = bfd_read (temp_aux, local_auxesz, nlist_bfd_global); |
3b016d57 | 1199 | if (bytes != local_auxesz) |
4262abfb | 1200 | error (_("%s: error reading symbols"), objfile_name (coffread_objfile)); |
aff410f1 MS |
1201 | bfd_coff_swap_aux_in (symfile_bfd, temp_aux, |
1202 | sym->n_type, sym->n_sclass, | |
c5aa993b JM |
1203 | 0, cs->c_naux, (char *) aux); |
1204 | /* If more than one aux entry, read past it (only the first aux | |
dda83cd7 | 1205 | is important). */ |
c5aa993b | 1206 | for (i = 1; i < cs->c_naux; i++) |
3b016d57 | 1207 | { |
226f9f4f | 1208 | bytes = bfd_read (temp_aux, local_auxesz, nlist_bfd_global); |
3b016d57 | 1209 | if (bytes != local_auxesz) |
4262abfb JK |
1210 | error (_("%s: error reading symbols"), |
1211 | objfile_name (coffread_objfile)); | |
3b016d57 | 1212 | } |
c906108c SS |
1213 | } |
1214 | cs->c_name = getsymname (sym); | |
1215 | cs->c_value = sym->n_value; | |
1216 | cs->c_sclass = (sym->n_sclass & 0xff); | |
1217 | cs->c_secnum = sym->n_scnum; | |
1218 | cs->c_type = (unsigned) sym->n_type; | |
1219 | if (!SDB_TYPE (cs->c_type)) | |
1220 | cs->c_type = 0; | |
1221 | ||
1222 | #if 0 | |
1223 | if (cs->c_sclass & 128) | |
3d263c1d | 1224 | printf (_("thumb symbol %s, class 0x%x\n"), cs->c_name, cs->c_sclass); |
c906108c SS |
1225 | #endif |
1226 | ||
1227 | symnum += 1 + cs->c_naux; | |
1228 | ||
1229 | /* The PE file format stores symbol values as offsets within the | |
1230 | section, rather than as absolute addresses. We correct that | |
1231 | here, if the symbol has an appropriate storage class. FIXME: We | |
1232 | should use BFD to read the symbols, rather than duplicating the | |
1233 | work here. */ | |
1234 | if (pe_file) | |
1235 | { | |
1236 | switch (cs->c_sclass) | |
1237 | { | |
1238 | case C_EXT: | |
1239 | case C_THUMBEXT: | |
1240 | case C_THUMBEXTFUNC: | |
1241 | case C_SECTION: | |
1242 | case C_NT_WEAK: | |
1243 | case C_STAT: | |
1244 | case C_THUMBSTAT: | |
1245 | case C_THUMBSTATFUNC: | |
1246 | case C_LABEL: | |
1247 | case C_THUMBLABEL: | |
1248 | case C_BLOCK: | |
1249 | case C_FCN: | |
1250 | case C_EFCN: | |
1251 | if (cs->c_secnum != 0) | |
1252 | cs->c_value += cs_section_address (cs, symfile_bfd); | |
1253 | break; | |
1254 | } | |
1255 | } | |
1256 | } | |
1257 | \f | |
aff410f1 | 1258 | /* Support for string table handling. */ |
c906108c | 1259 | |
c906108c | 1260 | static int |
a9e48095 | 1261 | init_stringtab (bfd *abfd, file_ptr offset, gdb::unique_xmalloc_ptr<char> *storage) |
c906108c SS |
1262 | { |
1263 | long length; | |
1264 | int val; | |
1265 | unsigned char lengthbuf[4]; | |
1266 | ||
c906108c | 1267 | /* If the file is stripped, the offset might be zero, indicating no |
aff410f1 | 1268 | string table. Just return with `stringtab' set to null. */ |
c906108c SS |
1269 | if (offset == 0) |
1270 | return 0; | |
1271 | ||
1272 | if (bfd_seek (abfd, offset, 0) < 0) | |
1273 | return -1; | |
1274 | ||
2db20b97 | 1275 | val = bfd_read (lengthbuf, sizeof lengthbuf, abfd); |
c906108c | 1276 | /* If no string table is needed, then the file may end immediately |
aff410f1 | 1277 | after the symbols. Just return with `stringtab' set to null. */ |
2db20b97 AM |
1278 | if (val != sizeof lengthbuf) |
1279 | return 0; | |
1280 | length = bfd_h_get_32 (symfile_bfd, lengthbuf); | |
1281 | if (length < sizeof lengthbuf) | |
c906108c SS |
1282 | return 0; |
1283 | ||
e2a03548 TT |
1284 | storage->reset ((char *) xmalloc (length)); |
1285 | stringtab = storage->get (); | |
aff410f1 MS |
1286 | /* This is in target format (probably not very useful, and not |
1287 | currently used), not host format. */ | |
c906108c | 1288 | memcpy (stringtab, lengthbuf, sizeof lengthbuf); |
58abdf88 | 1289 | stringtab_length = length; |
aff410f1 | 1290 | if (length == sizeof length) /* Empty table -- just the count. */ |
c906108c SS |
1291 | return 0; |
1292 | ||
226f9f4f AM |
1293 | val = bfd_read (stringtab + sizeof lengthbuf, |
1294 | length - sizeof lengthbuf, abfd); | |
c906108c SS |
1295 | if (val != length - sizeof lengthbuf || stringtab[length - 1] != '\0') |
1296 | return -1; | |
1297 | ||
1298 | return 0; | |
1299 | } | |
1300 | ||
c906108c | 1301 | static char * |
fba45db2 | 1302 | getsymname (struct internal_syment *symbol_entry) |
c906108c | 1303 | { |
c5aa993b | 1304 | static char buffer[SYMNMLEN + 1]; |
c906108c SS |
1305 | char *result; |
1306 | ||
1307 | if (symbol_entry->_n._n_n._n_zeroes == 0) | |
1308 | { | |
58abdf88 | 1309 | if (symbol_entry->_n._n_n._n_offset > stringtab_length) |
a6ce491c MW |
1310 | error (_("COFF Error: string table offset (%s) outside string table (length %ld)"), |
1311 | hex_string (symbol_entry->_n._n_n._n_offset), stringtab_length); | |
c906108c SS |
1312 | result = stringtab + symbol_entry->_n._n_n._n_offset; |
1313 | } | |
1314 | else | |
1315 | { | |
1316 | strncpy (buffer, symbol_entry->_n._n_name, SYMNMLEN); | |
1317 | buffer[SYMNMLEN] = '\0'; | |
1318 | result = buffer; | |
1319 | } | |
1320 | return result; | |
1321 | } | |
1322 | ||
aff410f1 MS |
1323 | /* Extract the file name from the aux entry of a C_FILE symbol. |
1324 | Return only the last component of the name. Result is in static | |
1325 | storage and is only good for temporary use. */ | |
c906108c | 1326 | |
9f37bbcc | 1327 | static const char * |
fba45db2 | 1328 | coff_getfilename (union internal_auxent *aux_entry) |
c906108c SS |
1329 | { |
1330 | static char buffer[BUFSIZ]; | |
9f37bbcc | 1331 | const char *result; |
c906108c | 1332 | |
b08625af | 1333 | if (aux_entry->x_file.x_n.x_n.x_zeroes == 0) |
9e91a352 | 1334 | { |
b08625af | 1335 | if (strlen (stringtab + aux_entry->x_file.x_n.x_n.x_offset) >= BUFSIZ) |
f34652de | 1336 | internal_error (_("coff file name too long")); |
b08625af | 1337 | strcpy (buffer, stringtab + aux_entry->x_file.x_n.x_n.x_offset); |
9e91a352 | 1338 | } |
c906108c SS |
1339 | else |
1340 | { | |
200546f1 TV |
1341 | size_t x_fname_len = sizeof (aux_entry->x_file.x_n.x_fname); |
1342 | strncpy (buffer, aux_entry->x_file.x_n.x_fname, x_fname_len); | |
1343 | buffer[x_fname_len] = '\0'; | |
c906108c SS |
1344 | } |
1345 | result = buffer; | |
1346 | ||
1347 | /* FIXME: We should not be throwing away the information about what | |
1348 | directory. It should go into dirname of the symtab, or some such | |
1349 | place. */ | |
9f37bbcc | 1350 | result = lbasename (result); |
c906108c SS |
1351 | return (result); |
1352 | } | |
1353 | \f | |
1354 | /* Support for line number handling. */ | |
1355 | ||
c906108c SS |
1356 | /* Read in all the line numbers for fast lookups later. Leave them in |
1357 | external (unswapped) format in memory; we'll swap them as we enter | |
1358 | them into GDB's data structures. */ | |
c5aa993b | 1359 | |
c906108c | 1360 | static int |
a9e48095 | 1361 | init_lineno (bfd *abfd, file_ptr offset, file_ptr size, |
e2a03548 | 1362 | gdb::unique_xmalloc_ptr<char> *storage) |
c906108c SS |
1363 | { |
1364 | int val; | |
1365 | ||
1366 | linetab_offset = offset; | |
1367 | linetab_size = size; | |
1368 | ||
c906108c SS |
1369 | if (size == 0) |
1370 | return 0; | |
1371 | ||
1372 | if (bfd_seek (abfd, offset, 0) < 0) | |
1373 | return -1; | |
c5aa993b | 1374 | |
aff410f1 | 1375 | /* Allocate the desired table, plus a sentinel. */ |
e2a03548 TT |
1376 | storage->reset ((char *) xmalloc (size + local_linesz)); |
1377 | linetab = storage->get (); | |
c906108c | 1378 | |
226f9f4f | 1379 | val = bfd_read (storage->get (), size, abfd); |
c906108c SS |
1380 | if (val != size) |
1381 | return -1; | |
1382 | ||
aff410f1 | 1383 | /* Terminate it with an all-zero sentinel record. */ |
c906108c SS |
1384 | memset (linetab + size, 0, local_linesz); |
1385 | ||
1386 | return 0; | |
1387 | } | |
1388 | ||
c906108c SS |
1389 | #if !defined (L_LNNO32) |
1390 | #define L_LNNO32(lp) ((lp)->l_lnno) | |
1391 | #endif | |
1392 | ||
1393 | static void | |
a9e48095 | 1394 | enter_linenos (file_ptr file_offset, int first_line, |
aa1ee363 | 1395 | int last_line, struct objfile *objfile) |
c906108c | 1396 | { |
08feed99 | 1397 | struct gdbarch *gdbarch = objfile->arch (); |
52f0bd74 | 1398 | char *rawptr; |
c906108c SS |
1399 | struct internal_lineno lptr; |
1400 | ||
1401 | if (!linetab) | |
c5aa993b | 1402 | return; |
c906108c SS |
1403 | if (file_offset < linetab_offset) |
1404 | { | |
d5d24e12 LM |
1405 | complaint (_("Line number pointer %s lower than start of line numbers"), |
1406 | plongest (file_offset)); | |
aff410f1 | 1407 | if (file_offset > linetab_size) /* Too big to be an offset? */ |
c906108c | 1408 | return; |
aff410f1 MS |
1409 | file_offset += linetab_offset; /* Try reading at that linetab |
1410 | offset. */ | |
c906108c | 1411 | } |
c5aa993b | 1412 | |
c906108c SS |
1413 | rawptr = &linetab[file_offset - linetab_offset]; |
1414 | ||
aff410f1 | 1415 | /* Skip first line entry for each function. */ |
c906108c | 1416 | rawptr += local_linesz; |
aff410f1 | 1417 | /* Line numbers start at one for the first line of the function. */ |
c906108c SS |
1418 | first_line--; |
1419 | ||
e6a8a7d2 EZ |
1420 | /* If the line number table is full (e.g. 64K lines in COFF debug |
1421 | info), the next function's L_LNNO32 might not be zero, so don't | |
1422 | overstep the table's end in any case. */ | |
1423 | while (rawptr <= &linetab[0] + linetab_size) | |
c5aa993b JM |
1424 | { |
1425 | bfd_coff_swap_lineno_in (symfile_bfd, rawptr, &lptr); | |
1426 | rawptr += local_linesz; | |
e6a8a7d2 | 1427 | /* The next function, or the sentinel, will have L_LNNO32 zero; |
aff410f1 | 1428 | we exit. */ |
c5aa993b | 1429 | if (L_LNNO32 (&lptr) && L_LNNO32 (&lptr) <= last_line) |
fbf65064 UW |
1430 | { |
1431 | CORE_ADDR addr = lptr.l_addr.l_paddr; | |
3c65e5b3 | 1432 | record_line (get_current_subfile (), |
aff410f1 | 1433 | first_line + L_LNNO32 (&lptr), |
48e0f38c TT |
1434 | unrelocated_addr (gdbarch_addr_bits_remove (gdbarch, |
1435 | addr))); | |
fbf65064 | 1436 | } |
c5aa993b JM |
1437 | else |
1438 | break; | |
1439 | } | |
c906108c SS |
1440 | } |
1441 | \f | |
1442 | static void | |
fba45db2 | 1443 | patch_type (struct type *type, struct type *real_type) |
c906108c | 1444 | { |
27710edb SM |
1445 | struct type *target = type->target_type (); |
1446 | struct type *real_target = real_type->target_type (); | |
c906108c | 1447 | |
b6cdbc9a | 1448 | target->set_length (real_target->length ()); |
2774f2da | 1449 | target->copy_fields (real_target); |
c906108c | 1450 | |
7d93a1e0 | 1451 | if (real_target->name ()) |
c906108c | 1452 | { |
0d5cff50 DE |
1453 | /* The previous copy of TYPE_NAME is allocated by |
1454 | process_coff_symbol. */ | |
84d53fa9 | 1455 | xfree ((char *) target->name ()); |
7d93a1e0 | 1456 | target->set_name (xstrdup (real_target->name ())); |
c906108c SS |
1457 | } |
1458 | } | |
1459 | ||
1460 | /* Patch up all appropriate typedef symbols in the opaque_type_chains | |
aff410f1 MS |
1461 | so that they can be used to print out opaque data structures |
1462 | properly. */ | |
c906108c SS |
1463 | |
1464 | static void | |
fba45db2 | 1465 | patch_opaque_types (struct symtab *s) |
c906108c | 1466 | { |
aff410f1 | 1467 | /* Go through the per-file symbols only. */ |
63d609de | 1468 | const struct block *b = s->compunit ()->blockvector ()->static_block (); |
548a89df | 1469 | for (struct symbol *real_sym : block_iterator_range (b)) |
c906108c SS |
1470 | { |
1471 | /* Find completed typedefs to use to fix opaque ones. | |
dda83cd7 SM |
1472 | Remove syms from the chain when their types are stored, |
1473 | but search the whole chain, as there may be several syms | |
1474 | from different files with the same name. */ | |
66d7f48f | 1475 | if (real_sym->aclass () == LOC_TYPEDEF |
6c9c307c | 1476 | && real_sym->domain () == VAR_DOMAIN |
5f9c5a63 | 1477 | && real_sym->type ()->code () == TYPE_CODE_PTR |
df86565b | 1478 | && real_sym->type ()->target_type ()->length () != 0) |
c906108c | 1479 | { |
987012b8 | 1480 | const char *name = real_sym->linkage_name (); |
aa1ee363 AC |
1481 | int hash = hashname (name); |
1482 | struct symbol *sym, *prev; | |
c5aa993b | 1483 | |
c906108c SS |
1484 | prev = 0; |
1485 | for (sym = opaque_type_chain[hash]; sym;) | |
1486 | { | |
987012b8 CB |
1487 | if (name[0] == sym->linkage_name ()[0] |
1488 | && strcmp (name + 1, sym->linkage_name () + 1) == 0) | |
c906108c SS |
1489 | { |
1490 | if (prev) | |
4aeddc50 | 1491 | prev->set_value_chain (sym->value_chain ()); |
c906108c | 1492 | else |
4aeddc50 | 1493 | opaque_type_chain[hash] = sym->value_chain (); |
c5aa993b | 1494 | |
5f9c5a63 | 1495 | patch_type (sym->type (), real_sym->type ()); |
c5aa993b | 1496 | |
c906108c | 1497 | if (prev) |
4aeddc50 | 1498 | sym = prev->value_chain (); |
c906108c | 1499 | else |
4aeddc50 | 1500 | sym = opaque_type_chain[hash]; |
c906108c SS |
1501 | } |
1502 | else | |
1503 | { | |
1504 | prev = sym; | |
4aeddc50 | 1505 | sym->set_value_chain (sym); |
c906108c SS |
1506 | } |
1507 | } | |
1508 | } | |
1509 | } | |
1510 | } | |
1511 | \f | |
768a979c UW |
1512 | static int |
1513 | coff_reg_to_regnum (struct symbol *sym, struct gdbarch *gdbarch) | |
1514 | { | |
4aeddc50 | 1515 | return gdbarch_sdb_reg_to_regnum (gdbarch, sym->value_longest ()); |
768a979c UW |
1516 | } |
1517 | ||
1518 | static const struct symbol_register_ops coff_register_funcs = { | |
1519 | coff_reg_to_regnum | |
1520 | }; | |
1521 | ||
f1e6e072 TT |
1522 | /* The "aclass" index for computed COFF symbols. */ |
1523 | ||
1524 | static int coff_register_index; | |
1525 | ||
c906108c | 1526 | static struct symbol * |
aa1ee363 AC |
1527 | process_coff_symbol (struct coff_symbol *cs, |
1528 | union internal_auxent *aux, | |
fba45db2 | 1529 | struct objfile *objfile) |
c906108c | 1530 | { |
8c14c3a3 | 1531 | struct symbol *sym = new (&objfile->objfile_obstack) symbol; |
c906108c SS |
1532 | char *name; |
1533 | ||
c906108c | 1534 | name = cs->c_name; |
98badbfd | 1535 | name = EXTERNAL_NAME (name, objfile->obfd.get ()); |
d3ecddab CB |
1536 | sym->set_language (get_current_subfile ()->language, |
1537 | &objfile->objfile_obstack); | |
4d4eaa30 | 1538 | sym->compute_and_set_names (name, true, objfile->per_bfd); |
c906108c SS |
1539 | |
1540 | /* default assumptions */ | |
4aeddc50 | 1541 | sym->set_value_longest (cs->c_value); |
6c9c307c | 1542 | sym->set_domain (VAR_DOMAIN); |
a52d653e | 1543 | sym->set_section_index (cs_to_section (cs, objfile)); |
c906108c SS |
1544 | |
1545 | if (ISFCN (cs->c_type)) | |
1546 | { | |
4aeddc50 SM |
1547 | sym->set_value_longest |
1548 | (sym->value_longest () + objfile->text_section_offset ()); | |
5f9c5a63 SM |
1549 | sym->set_type |
1550 | (lookup_function_type (decode_function_type (cs, cs->c_type, | |
1551 | aux, objfile))); | |
c906108c | 1552 | |
ba44b1a3 | 1553 | sym->set_aclass_index (LOC_BLOCK); |
c906108c SS |
1554 | if (cs->c_sclass == C_STAT || cs->c_sclass == C_THUMBSTAT |
1555 | || cs->c_sclass == C_THUMBSTATFUNC) | |
e148f09d | 1556 | add_symbol_to_list (sym, get_file_symbols ()); |
c906108c SS |
1557 | else if (cs->c_sclass == C_EXT || cs->c_sclass == C_THUMBEXT |
1558 | || cs->c_sclass == C_THUMBEXTFUNC) | |
e148f09d | 1559 | add_symbol_to_list (sym, get_global_symbols ()); |
c906108c SS |
1560 | } |
1561 | else | |
1562 | { | |
5f9c5a63 | 1563 | sym->set_type (decode_type (cs, cs->c_type, aux, objfile)); |
c906108c SS |
1564 | switch (cs->c_sclass) |
1565 | { | |
c5aa993b JM |
1566 | case C_NULL: |
1567 | break; | |
c906108c | 1568 | |
c5aa993b | 1569 | case C_AUTO: |
ba44b1a3 | 1570 | sym->set_aclass_index (LOC_LOCAL); |
e148f09d | 1571 | add_symbol_to_list (sym, get_local_symbols ()); |
c5aa993b | 1572 | break; |
c906108c | 1573 | |
c5aa993b JM |
1574 | case C_THUMBEXT: |
1575 | case C_THUMBEXTFUNC: | |
1576 | case C_EXT: | |
ba44b1a3 | 1577 | sym->set_aclass_index (LOC_STATIC); |
4aeddc50 SM |
1578 | sym->set_value_address ((CORE_ADDR) cs->c_value |
1579 | + objfile->section_offsets[SECT_OFF_TEXT (objfile)]); | |
e148f09d | 1580 | add_symbol_to_list (sym, get_global_symbols ()); |
c5aa993b | 1581 | break; |
c906108c | 1582 | |
c5aa993b JM |
1583 | case C_THUMBSTAT: |
1584 | case C_THUMBSTATFUNC: | |
1585 | case C_STAT: | |
ba44b1a3 | 1586 | sym->set_aclass_index (LOC_STATIC); |
4aeddc50 SM |
1587 | sym->set_value_address ((CORE_ADDR) cs->c_value |
1588 | + objfile->section_offsets[SECT_OFF_TEXT (objfile)]); | |
c5aa993b JM |
1589 | if (within_function) |
1590 | { | |
aff410f1 | 1591 | /* Static symbol of local scope. */ |
e148f09d | 1592 | add_symbol_to_list (sym, get_local_symbols ()); |
c906108c | 1593 | } |
c5aa993b JM |
1594 | else |
1595 | { | |
aff410f1 | 1596 | /* Static symbol at top level of file. */ |
e148f09d | 1597 | add_symbol_to_list (sym, get_file_symbols ()); |
c906108c | 1598 | } |
c5aa993b | 1599 | break; |
c906108c SS |
1600 | |
1601 | #ifdef C_GLBLREG /* AMD coff */ | |
c5aa993b | 1602 | case C_GLBLREG: |
c906108c | 1603 | #endif |
c5aa993b | 1604 | case C_REG: |
ba44b1a3 | 1605 | sym->set_aclass_index (coff_register_index); |
4aeddc50 | 1606 | sym->set_value_longest (cs->c_value); |
e148f09d | 1607 | add_symbol_to_list (sym, get_local_symbols ()); |
c5aa993b | 1608 | break; |
c906108c | 1609 | |
c5aa993b JM |
1610 | case C_THUMBLABEL: |
1611 | case C_LABEL: | |
1612 | break; | |
c906108c | 1613 | |
c5aa993b | 1614 | case C_ARG: |
ba44b1a3 | 1615 | sym->set_aclass_index (LOC_ARG); |
d9743061 | 1616 | sym->set_is_argument (1); |
e148f09d | 1617 | add_symbol_to_list (sym, get_local_symbols ()); |
c5aa993b | 1618 | break; |
c906108c | 1619 | |
c5aa993b | 1620 | case C_REGPARM: |
ba44b1a3 | 1621 | sym->set_aclass_index (coff_register_index); |
d9743061 | 1622 | sym->set_is_argument (1); |
4aeddc50 | 1623 | sym->set_value_longest (cs->c_value); |
e148f09d | 1624 | add_symbol_to_list (sym, get_local_symbols ()); |
c5aa993b | 1625 | break; |
c906108c | 1626 | |
c5aa993b | 1627 | case C_TPDEF: |
ba44b1a3 | 1628 | sym->set_aclass_index (LOC_TYPEDEF); |
6c9c307c | 1629 | sym->set_domain (VAR_DOMAIN); |
c5aa993b | 1630 | |
0963b4bd | 1631 | /* If type has no name, give it one. */ |
5f9c5a63 | 1632 | if (sym->type ()->name () == 0) |
c5aa993b | 1633 | { |
5f9c5a63 SM |
1634 | if (sym->type ()->code () == TYPE_CODE_PTR |
1635 | || sym->type ()->code () == TYPE_CODE_FUNC) | |
c5aa993b | 1636 | { |
aff410f1 MS |
1637 | /* If we are giving a name to a type such as |
1638 | "pointer to foo" or "function returning foo", we | |
1639 | better not set the TYPE_NAME. If the program | |
1640 | contains "typedef char *caddr_t;", we don't want | |
1641 | all variables of type char * to print as caddr_t. | |
1642 | This is not just a consequence of GDB's type | |
1643 | management; CC and GCC (at least through version | |
1644 | 2.4) both output variables of either type char * | |
1645 | or caddr_t with the type refering to the C_TPDEF | |
1646 | symbol for caddr_t. If a future compiler cleans | |
1647 | this up it GDB is not ready for it yet, but if it | |
1648 | becomes ready we somehow need to disable this | |
1649 | check (without breaking the PCC/GCC2.4 case). | |
c5aa993b JM |
1650 | |
1651 | Sigh. | |
1652 | ||
1653 | Fortunately, this check seems not to be necessary | |
1654 | for anything except pointers or functions. */ | |
1655 | ; | |
1656 | } | |
1657 | else | |
5f9c5a63 | 1658 | sym->type ()->set_name (xstrdup (sym->linkage_name ())); |
c5aa993b | 1659 | } |
c906108c | 1660 | |
aff410f1 MS |
1661 | /* Keep track of any type which points to empty structured |
1662 | type, so it can be filled from a definition from another | |
1663 | file. A simple forward reference (TYPE_CODE_UNDEF) is | |
1664 | not an empty structured type, though; the forward | |
1665 | references work themselves out via the magic of | |
1666 | coff_lookup_type. */ | |
5f9c5a63 | 1667 | if (sym->type ()->code () == TYPE_CODE_PTR |
df86565b | 1668 | && sym->type ()->target_type ()->length () == 0 |
27710edb | 1669 | && sym->type ()->target_type ()->code () |
78134374 | 1670 | != TYPE_CODE_UNDEF) |
c5aa993b | 1671 | { |
987012b8 | 1672 | int i = hashname (sym->linkage_name ()); |
c906108c | 1673 | |
4aeddc50 | 1674 | sym->set_value_chain (opaque_type_chain[i]); |
c5aa993b JM |
1675 | opaque_type_chain[i] = sym; |
1676 | } | |
e148f09d | 1677 | add_symbol_to_list (sym, get_file_symbols ()); |
c5aa993b | 1678 | break; |
c906108c | 1679 | |
c5aa993b JM |
1680 | case C_STRTAG: |
1681 | case C_UNTAG: | |
1682 | case C_ENTAG: | |
ba44b1a3 | 1683 | sym->set_aclass_index (LOC_TYPEDEF); |
6c9c307c | 1684 | sym->set_domain (STRUCT_DOMAIN); |
c5aa993b JM |
1685 | |
1686 | /* Some compilers try to be helpful by inventing "fake" | |
1687 | names for anonymous enums, structures, and unions, like | |
aff410f1 | 1688 | "~0fake" or ".0fake". Thanks, but no thanks... */ |
5f9c5a63 | 1689 | if (sym->type ()->name () == 0) |
987012b8 CB |
1690 | if (sym->linkage_name () != NULL |
1691 | && *sym->linkage_name () != '~' | |
1692 | && *sym->linkage_name () != '.') | |
5f9c5a63 | 1693 | sym->type ()->set_name (xstrdup (sym->linkage_name ())); |
c5aa993b | 1694 | |
e148f09d | 1695 | add_symbol_to_list (sym, get_file_symbols ()); |
c5aa993b | 1696 | break; |
c906108c | 1697 | |
c5aa993b JM |
1698 | default: |
1699 | break; | |
c906108c SS |
1700 | } |
1701 | } | |
1702 | return sym; | |
1703 | } | |
1704 | \f | |
1705 | /* Decode a coff type specifier; return the type that is meant. */ | |
1706 | ||
1707 | static struct type * | |
aa1ee363 | 1708 | decode_type (struct coff_symbol *cs, unsigned int c_type, |
5e2b427d | 1709 | union internal_auxent *aux, struct objfile *objfile) |
c906108c | 1710 | { |
52f0bd74 | 1711 | struct type *type = 0; |
c906108c SS |
1712 | unsigned int new_c_type; |
1713 | ||
1714 | if (c_type & ~N_BTMASK) | |
1715 | { | |
1716 | new_c_type = DECREF (c_type); | |
1717 | if (ISPTR (c_type)) | |
1718 | { | |
5e2b427d | 1719 | type = decode_type (cs, new_c_type, aux, objfile); |
c906108c SS |
1720 | type = lookup_pointer_type (type); |
1721 | } | |
1722 | else if (ISFCN (c_type)) | |
1723 | { | |
5e2b427d | 1724 | type = decode_type (cs, new_c_type, aux, objfile); |
c906108c SS |
1725 | type = lookup_function_type (type); |
1726 | } | |
1727 | else if (ISARY (c_type)) | |
1728 | { | |
1729 | int i, n; | |
aa1ee363 | 1730 | unsigned short *dim; |
c906108c SS |
1731 | struct type *base_type, *index_type, *range_type; |
1732 | ||
1733 | /* Define an array type. */ | |
aff410f1 | 1734 | /* auxent refers to array, not base type. */ |
a2c7ca15 | 1735 | if (aux->x_sym.x_tagndx.u32 == 0) |
c906108c SS |
1736 | cs->c_naux = 0; |
1737 | ||
aff410f1 | 1738 | /* Shift the indices down. */ |
c906108c SS |
1739 | dim = &aux->x_sym.x_fcnary.x_ary.x_dimen[0]; |
1740 | i = 1; | |
1741 | n = dim[0]; | |
1742 | for (i = 0; *dim && i < DIMNUM - 1; i++, dim++) | |
1743 | *dim = *(dim + 1); | |
1744 | *dim = 0; | |
1745 | ||
5e2b427d | 1746 | base_type = decode_type (cs, new_c_type, aux, objfile); |
a8ed3dde | 1747 | index_type = builtin_type (objfile)->builtin_int; |
76fc0f62 | 1748 | type_allocator alloc (objfile, language_c); |
0c9c3474 | 1749 | range_type |
e727c536 | 1750 | = create_static_range_type (alloc, index_type, 0, n - 1); |
9e76b17a | 1751 | type = create_array_type (alloc, base_type, range_type); |
c906108c SS |
1752 | } |
1753 | return type; | |
1754 | } | |
1755 | ||
aff410f1 MS |
1756 | /* Reference to existing type. This only occurs with the struct, |
1757 | union, and enum types. EPI a29k coff fakes us out by producing | |
1758 | aux entries with a nonzero x_tagndx for definitions of structs, | |
1759 | unions, and enums, so we have to check the c_sclass field. SCO | |
1760 | 3.2v4 cc gets confused with pointers to pointers to defined | |
1761 | structs, and generates negative x_tagndx fields. */ | |
a2c7ca15 | 1762 | if (cs->c_naux > 0 && aux->x_sym.x_tagndx.u32 != 0) |
c906108c SS |
1763 | { |
1764 | if (cs->c_sclass != C_STRTAG | |
1765 | && cs->c_sclass != C_UNTAG | |
1766 | && cs->c_sclass != C_ENTAG | |
a2c7ca15 | 1767 | && (int32_t) aux->x_sym.x_tagndx.u32 >= 0) |
c906108c | 1768 | { |
a2c7ca15 | 1769 | type = coff_alloc_type (aux->x_sym.x_tagndx.u32); |
c906108c SS |
1770 | return type; |
1771 | } | |
1772 | else | |
1773 | { | |
b98664d3 | 1774 | complaint (_("Symbol table entry for %s has bad tagndx value"), |
23136709 | 1775 | cs->c_name); |
aff410f1 | 1776 | /* And fall through to decode_base_type... */ |
c906108c SS |
1777 | } |
1778 | } | |
1779 | ||
5e2b427d | 1780 | return decode_base_type (cs, BTYPE (c_type), aux, objfile); |
c906108c SS |
1781 | } |
1782 | ||
1783 | /* Decode a coff type specifier for function definition; | |
1784 | return the type that the function returns. */ | |
1785 | ||
1786 | static struct type * | |
aff410f1 MS |
1787 | decode_function_type (struct coff_symbol *cs, |
1788 | unsigned int c_type, | |
1789 | union internal_auxent *aux, | |
1790 | struct objfile *objfile) | |
c906108c | 1791 | { |
a2c7ca15 | 1792 | if (aux->x_sym.x_tagndx.u32 == 0) |
aff410f1 MS |
1793 | cs->c_naux = 0; /* auxent refers to function, not base |
1794 | type. */ | |
c906108c | 1795 | |
5e2b427d | 1796 | return decode_type (cs, DECREF (c_type), aux, objfile); |
c906108c SS |
1797 | } |
1798 | \f | |
aff410f1 | 1799 | /* Basic C types. */ |
c906108c SS |
1800 | |
1801 | static struct type * | |
aff410f1 MS |
1802 | decode_base_type (struct coff_symbol *cs, |
1803 | unsigned int c_type, | |
1804 | union internal_auxent *aux, | |
1805 | struct objfile *objfile) | |
c906108c | 1806 | { |
08feed99 | 1807 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c SS |
1808 | struct type *type; |
1809 | ||
1810 | switch (c_type) | |
1811 | { | |
c5aa993b | 1812 | case T_NULL: |
aff410f1 | 1813 | /* Shows up with "void (*foo)();" structure members. */ |
a8ed3dde | 1814 | return builtin_type (objfile)->builtin_void; |
c906108c | 1815 | |
c906108c | 1816 | #ifdef T_VOID |
c5aa993b JM |
1817 | case T_VOID: |
1818 | /* Intel 960 COFF has this symbol and meaning. */ | |
a8ed3dde | 1819 | return builtin_type (objfile)->builtin_void; |
c906108c SS |
1820 | #endif |
1821 | ||
c5aa993b | 1822 | case T_CHAR: |
a8ed3dde | 1823 | return builtin_type (objfile)->builtin_char; |
c906108c | 1824 | |
c5aa993b | 1825 | case T_SHORT: |
a8ed3dde | 1826 | return builtin_type (objfile)->builtin_short; |
c906108c | 1827 | |
c5aa993b | 1828 | case T_INT: |
a8ed3dde | 1829 | return builtin_type (objfile)->builtin_int; |
c906108c | 1830 | |
c5aa993b JM |
1831 | case T_LONG: |
1832 | if (cs->c_sclass == C_FIELD | |
9a76efb6 | 1833 | && aux->x_sym.x_misc.x_lnsz.x_size |
5e2b427d | 1834 | > gdbarch_long_bit (gdbarch)) |
a8ed3dde | 1835 | return builtin_type (objfile)->builtin_long_long; |
c5aa993b | 1836 | else |
a8ed3dde | 1837 | return builtin_type (objfile)->builtin_long; |
c906108c | 1838 | |
c5aa993b | 1839 | case T_FLOAT: |
a8ed3dde | 1840 | return builtin_type (objfile)->builtin_float; |
c906108c | 1841 | |
c5aa993b | 1842 | case T_DOUBLE: |
a8ed3dde | 1843 | return builtin_type (objfile)->builtin_double; |
c906108c | 1844 | |
c5aa993b | 1845 | case T_LNGDBL: |
a8ed3dde | 1846 | return builtin_type (objfile)->builtin_long_double; |
c906108c | 1847 | |
c5aa993b JM |
1848 | case T_STRUCT: |
1849 | if (cs->c_naux != 1) | |
1850 | { | |
aff410f1 | 1851 | /* Anonymous structure type. */ |
c5aa993b | 1852 | type = coff_alloc_type (cs->c_symnum); |
67607e24 | 1853 | type->set_code (TYPE_CODE_STRUCT); |
d0e39ea2 | 1854 | type->set_name (NULL); |
c5aa993b | 1855 | INIT_CPLUS_SPECIFIC (type); |
b6cdbc9a | 1856 | type->set_length (0); |
3cabb6b0 | 1857 | type->set_fields (nullptr); |
5e33d5f4 | 1858 | type->set_num_fields (0); |
c5aa993b JM |
1859 | } |
1860 | else | |
1861 | { | |
1862 | type = coff_read_struct_type (cs->c_symnum, | |
1863 | aux->x_sym.x_misc.x_lnsz.x_size, | |
a2c7ca15 | 1864 | aux->x_sym.x_fcnary.x_fcn.x_endndx.u32, |
5e2b427d | 1865 | objfile); |
c5aa993b JM |
1866 | } |
1867 | return type; | |
c906108c | 1868 | |
c5aa993b JM |
1869 | case T_UNION: |
1870 | if (cs->c_naux != 1) | |
1871 | { | |
aff410f1 | 1872 | /* Anonymous union type. */ |
c5aa993b | 1873 | type = coff_alloc_type (cs->c_symnum); |
d0e39ea2 | 1874 | type->set_name (NULL); |
c5aa993b | 1875 | INIT_CPLUS_SPECIFIC (type); |
b6cdbc9a | 1876 | type->set_length (0); |
3cabb6b0 | 1877 | type->set_fields (nullptr); |
5e33d5f4 | 1878 | type->set_num_fields (0); |
c5aa993b JM |
1879 | } |
1880 | else | |
1881 | { | |
1882 | type = coff_read_struct_type (cs->c_symnum, | |
c906108c | 1883 | aux->x_sym.x_misc.x_lnsz.x_size, |
a2c7ca15 | 1884 | aux->x_sym.x_fcnary.x_fcn.x_endndx.u32, |
5e2b427d | 1885 | objfile); |
c5aa993b | 1886 | } |
67607e24 | 1887 | type->set_code (TYPE_CODE_UNION); |
c5aa993b | 1888 | return type; |
c906108c | 1889 | |
c5aa993b JM |
1890 | case T_ENUM: |
1891 | if (cs->c_naux != 1) | |
1892 | { | |
aff410f1 | 1893 | /* Anonymous enum type. */ |
c5aa993b | 1894 | type = coff_alloc_type (cs->c_symnum); |
67607e24 | 1895 | type->set_code (TYPE_CODE_ENUM); |
d0e39ea2 | 1896 | type->set_name (NULL); |
b6cdbc9a | 1897 | type->set_length (0); |
3cabb6b0 | 1898 | type->set_fields (nullptr); |
5e33d5f4 | 1899 | type->set_num_fields (0); |
c5aa993b JM |
1900 | } |
1901 | else | |
1902 | { | |
1903 | type = coff_read_enum_type (cs->c_symnum, | |
1904 | aux->x_sym.x_misc.x_lnsz.x_size, | |
a2c7ca15 | 1905 | aux->x_sym.x_fcnary.x_fcn.x_endndx.u32, |
5e2b427d | 1906 | objfile); |
c5aa993b JM |
1907 | } |
1908 | return type; | |
1909 | ||
1910 | case T_MOE: | |
aff410f1 | 1911 | /* Shouldn't show up here. */ |
c5aa993b | 1912 | break; |
c906108c | 1913 | |
c5aa993b | 1914 | case T_UCHAR: |
a8ed3dde | 1915 | return builtin_type (objfile)->builtin_unsigned_char; |
c906108c | 1916 | |
c5aa993b | 1917 | case T_USHORT: |
a8ed3dde | 1918 | return builtin_type (objfile)->builtin_unsigned_short; |
c906108c | 1919 | |
c5aa993b | 1920 | case T_UINT: |
a8ed3dde | 1921 | return builtin_type (objfile)->builtin_unsigned_int; |
c906108c | 1922 | |
c5aa993b JM |
1923 | case T_ULONG: |
1924 | if (cs->c_sclass == C_FIELD | |
9a76efb6 | 1925 | && aux->x_sym.x_misc.x_lnsz.x_size |
5e2b427d | 1926 | > gdbarch_long_bit (gdbarch)) |
a8ed3dde | 1927 | return builtin_type (objfile)->builtin_unsigned_long_long; |
c5aa993b | 1928 | else |
a8ed3dde | 1929 | return builtin_type (objfile)->builtin_unsigned_long; |
c906108c | 1930 | } |
b98664d3 | 1931 | complaint (_("Unexpected type for symbol %s"), cs->c_name); |
a8ed3dde | 1932 | return builtin_type (objfile)->builtin_void; |
c906108c SS |
1933 | } |
1934 | \f | |
1935 | /* This page contains subroutines of read_type. */ | |
1936 | ||
1937 | /* Read the description of a structure (or union type) and return an | |
1938 | object describing the type. */ | |
1939 | ||
1940 | static struct type * | |
5e2b427d UW |
1941 | coff_read_struct_type (int index, int length, int lastsym, |
1942 | struct objfile *objfile) | |
c906108c SS |
1943 | { |
1944 | struct nextfield | |
1945 | { | |
1946 | struct nextfield *next; | |
1947 | struct field field; | |
1948 | }; | |
1949 | ||
52f0bd74 AC |
1950 | struct type *type; |
1951 | struct nextfield *list = 0; | |
fe978cb0 | 1952 | struct nextfield *newobj; |
c906108c | 1953 | int nfields = 0; |
52f0bd74 | 1954 | int n; |
c906108c SS |
1955 | char *name; |
1956 | struct coff_symbol member_sym; | |
52f0bd74 | 1957 | struct coff_symbol *ms = &member_sym; |
c906108c SS |
1958 | struct internal_syment sub_sym; |
1959 | union internal_auxent sub_aux; | |
1960 | int done = 0; | |
1961 | ||
1962 | type = coff_alloc_type (index); | |
67607e24 | 1963 | type->set_code (TYPE_CODE_STRUCT); |
c5aa993b | 1964 | INIT_CPLUS_SPECIFIC (type); |
b6cdbc9a | 1965 | type->set_length (length); |
c906108c SS |
1966 | |
1967 | while (!done && symnum < lastsym && symnum < nlist_nsyms_global) | |
1968 | { | |
1969 | read_one_sym (ms, &sub_sym, &sub_aux); | |
1970 | name = ms->c_name; | |
98badbfd | 1971 | name = EXTERNAL_NAME (name, objfile->obfd.get ()); |
c906108c SS |
1972 | |
1973 | switch (ms->c_sclass) | |
1974 | { | |
c5aa993b JM |
1975 | case C_MOS: |
1976 | case C_MOU: | |
1977 | ||
1978 | /* Get space to record the next field's data. */ | |
8d749320 | 1979 | newobj = XALLOCA (struct nextfield); |
fe978cb0 PA |
1980 | newobj->next = list; |
1981 | list = newobj; | |
c5aa993b JM |
1982 | |
1983 | /* Save the data. */ | |
d3fd12df SM |
1984 | list->field.set_name (obstack_strdup (&objfile->objfile_obstack, |
1985 | name)); | |
5d14b6e5 SM |
1986 | list->field.set_type (decode_type (ms, ms->c_type, &sub_aux, |
1987 | objfile)); | |
cd3f655c | 1988 | list->field.set_loc_bitpos (8 * ms->c_value); |
886176b8 | 1989 | list->field.set_bitsize (0); |
c5aa993b JM |
1990 | nfields++; |
1991 | break; | |
c906108c | 1992 | |
c5aa993b JM |
1993 | case C_FIELD: |
1994 | ||
1995 | /* Get space to record the next field's data. */ | |
8d749320 | 1996 | newobj = XALLOCA (struct nextfield); |
fe978cb0 PA |
1997 | newobj->next = list; |
1998 | list = newobj; | |
c5aa993b JM |
1999 | |
2000 | /* Save the data. */ | |
d3fd12df SM |
2001 | list->field.set_name (obstack_strdup (&objfile->objfile_obstack, |
2002 | name)); | |
5d14b6e5 SM |
2003 | list->field.set_type (decode_type (ms, ms->c_type, &sub_aux, |
2004 | objfile)); | |
cd3f655c | 2005 | list->field.set_loc_bitpos (ms->c_value); |
886176b8 | 2006 | list->field.set_bitsize (sub_aux.x_sym.x_misc.x_lnsz.x_size); |
c5aa993b JM |
2007 | nfields++; |
2008 | break; | |
c906108c | 2009 | |
c5aa993b JM |
2010 | case C_EOS: |
2011 | done = 1; | |
2012 | break; | |
c906108c SS |
2013 | } |
2014 | } | |
2015 | /* Now create the vector of fields, and record how big it is. */ | |
2016 | ||
4b3d893a | 2017 | type->alloc_fields (nfields); |
c906108c SS |
2018 | |
2019 | /* Copy the saved-up fields into the field vector. */ | |
2020 | ||
2021 | for (n = nfields; list; list = list->next) | |
ceacbf6e | 2022 | type->field (--n) = list->field; |
c906108c SS |
2023 | |
2024 | return type; | |
2025 | } | |
2026 | \f | |
2027 | /* Read a definition of an enumeration type, | |
2028 | and create and return a suitable type object. | |
2029 | Also defines the symbols that represent the values of the type. */ | |
2030 | ||
c906108c | 2031 | static struct type * |
5e2b427d UW |
2032 | coff_read_enum_type (int index, int length, int lastsym, |
2033 | struct objfile *objfile) | |
c906108c | 2034 | { |
08feed99 | 2035 | struct gdbarch *gdbarch = objfile->arch (); |
52f0bd74 AC |
2036 | struct symbol *sym; |
2037 | struct type *type; | |
c906108c SS |
2038 | int nsyms = 0; |
2039 | int done = 0; | |
2040 | struct pending **symlist; | |
2041 | struct coff_symbol member_sym; | |
52f0bd74 | 2042 | struct coff_symbol *ms = &member_sym; |
c906108c SS |
2043 | struct internal_syment sub_sym; |
2044 | union internal_auxent sub_aux; | |
2045 | struct pending *osyms, *syms; | |
2046 | int o_nsyms; | |
52f0bd74 | 2047 | int n; |
c906108c SS |
2048 | char *name; |
2049 | int unsigned_enum = 1; | |
2050 | ||
2051 | type = coff_alloc_type (index); | |
2052 | if (within_function) | |
e148f09d | 2053 | symlist = get_local_symbols (); |
c906108c | 2054 | else |
e148f09d | 2055 | symlist = get_file_symbols (); |
c906108c SS |
2056 | osyms = *symlist; |
2057 | o_nsyms = osyms ? osyms->nsyms : 0; | |
2058 | ||
2059 | while (!done && symnum < lastsym && symnum < nlist_nsyms_global) | |
2060 | { | |
2061 | read_one_sym (ms, &sub_sym, &sub_aux); | |
2062 | name = ms->c_name; | |
98badbfd | 2063 | name = EXTERNAL_NAME (name, objfile->obfd.get ()); |
c906108c SS |
2064 | |
2065 | switch (ms->c_sclass) | |
2066 | { | |
c5aa993b | 2067 | case C_MOE: |
8c14c3a3 | 2068 | sym = new (&objfile->objfile_obstack) symbol; |
c5aa993b | 2069 | |
021887d8 | 2070 | name = obstack_strdup (&objfile->objfile_obstack, name); |
43678b0a | 2071 | sym->set_linkage_name (name); |
ba44b1a3 | 2072 | sym->set_aclass_index (LOC_CONST); |
6c9c307c | 2073 | sym->set_domain (VAR_DOMAIN); |
4aeddc50 | 2074 | sym->set_value_longest (ms->c_value); |
c5aa993b JM |
2075 | add_symbol_to_list (sym, symlist); |
2076 | nsyms++; | |
2077 | break; | |
c906108c | 2078 | |
c5aa993b JM |
2079 | case C_EOS: |
2080 | /* Sometimes the linker (on 386/ix 2.0.2 at least) screws | |
2081 | up the count of how many symbols to read. So stop | |
2082 | on .eos. */ | |
2083 | done = 1; | |
2084 | break; | |
c906108c SS |
2085 | } |
2086 | } | |
2087 | ||
2088 | /* Now fill in the fields of the type-structure. */ | |
2089 | ||
2090 | if (length > 0) | |
b6cdbc9a | 2091 | type->set_length (length); |
9a76efb6 | 2092 | else /* Assume ints. */ |
b6cdbc9a | 2093 | type->set_length (gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT); |
67607e24 | 2094 | type->set_code (TYPE_CODE_ENUM); |
4b3d893a | 2095 | type->alloc_fields (nsyms); |
c906108c SS |
2096 | |
2097 | /* Find the symbols for the values and put them into the type. | |
2098 | The symbols can be found in the symlist that we put them on | |
2099 | to cause them to be defined. osyms contains the old value | |
2100 | of that symlist; everything up to there was defined by us. */ | |
2101 | /* Note that we preserve the order of the enum constants, so | |
2102 | that in something like "enum {FOO, LAST_THING=FOO}" we print | |
2103 | FOO, not LAST_THING. */ | |
2104 | ||
2105 | for (syms = *symlist, n = 0; syms; syms = syms->next) | |
2106 | { | |
2107 | int j = 0; | |
2108 | ||
2109 | if (syms == osyms) | |
2110 | j = o_nsyms; | |
c5aa993b | 2111 | for (; j < syms->nsyms; j++, n++) |
c906108c SS |
2112 | { |
2113 | struct symbol *xsym = syms->symbol[j]; | |
c5504eaf | 2114 | |
5f9c5a63 | 2115 | xsym->set_type (type); |
d3fd12df | 2116 | type->field (n).set_name (xsym->linkage_name ()); |
4aeddc50 SM |
2117 | type->field (n).set_loc_enumval (xsym->value_longest ()); |
2118 | if (xsym->value_longest () < 0) | |
c906108c | 2119 | unsigned_enum = 0; |
886176b8 | 2120 | type->field (n).set_bitsize (0); |
c906108c SS |
2121 | } |
2122 | if (syms == osyms) | |
2123 | break; | |
2124 | } | |
2125 | ||
2126 | if (unsigned_enum) | |
653223d3 | 2127 | type->set_is_unsigned (true); |
c906108c SS |
2128 | |
2129 | return type; | |
2130 | } | |
2131 | ||
aff410f1 | 2132 | /* Register our ability to parse symbols for coff BFD files. */ |
c906108c | 2133 | |
00b5771c | 2134 | static const struct sym_fns coff_sym_fns = |
c906108c | 2135 | { |
aff410f1 MS |
2136 | coff_new_init, /* sym_new_init: init anything gbl to |
2137 | entire symtab */ | |
2138 | coff_symfile_init, /* sym_init: read initial info, setup | |
2139 | for sym_read() */ | |
2140 | coff_symfile_read, /* sym_read: read a symbol file into | |
2141 | symtab */ | |
2142 | coff_symfile_finish, /* sym_finish: finished with file, | |
2143 | cleanup */ | |
2144 | default_symfile_offsets, /* sym_offsets: xlate external to | |
2145 | internal form */ | |
2146 | default_symfile_segments, /* sym_segments: Get segment | |
2147 | information from a file */ | |
c295b2e5 | 2148 | NULL, /* sym_read_linetable */ |
aff410f1 MS |
2149 | |
2150 | default_symfile_relocate, /* sym_relocate: Relocate a debug | |
2151 | section. */ | |
55aa24fb | 2152 | NULL, /* sym_probe_fns */ |
c906108c SS |
2153 | }; |
2154 | ||
6c265988 | 2155 | void _initialize_coffread (); |
c906108c | 2156 | void |
6c265988 | 2157 | _initialize_coffread () |
c906108c | 2158 | { |
c256e171 | 2159 | add_symtab_fns (bfd_target_coff_flavour, &coff_sym_fns); |
b8b98ad1 | 2160 | |
f1e6e072 TT |
2161 | coff_register_index |
2162 | = register_symbol_register_impl (LOC_REGISTER, &coff_register_funcs); | |
c906108c | 2163 | } |