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c906108c | 1 | /* Read coff symbol tables and convert to internal format, for GDB. |
0b302171 | 2 | Copyright (C) 1987-2005, 2007-2012 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" | |
21 | #include "symtab.h" | |
22 | #include "gdbtypes.h" | |
23 | #include "demangle.h" | |
24 | #include "breakpoint.h" | |
25 | ||
26 | #include "bfd.h" | |
04ea0df1 | 27 | #include "gdb_obstack.h" |
c906108c SS |
28 | |
29 | #include "gdb_string.h" | |
30 | #include <ctype.h> | |
31 | ||
32 | #include "coff/internal.h" /* Internal format of COFF symbols in BFD */ | |
33 | #include "libcoff.h" /* FIXME secret internal data from BFD */ | |
c906108c SS |
34 | #include "objfiles.h" |
35 | #include "buildsym.h" | |
36 | #include "gdb-stabs.h" | |
37 | #include "stabsread.h" | |
38 | #include "complaints.h" | |
39 | #include "target.h" | |
6ec4c4bd | 40 | #include "gdb_assert.h" |
fe898f56 | 41 | #include "block.h" |
de4f826b | 42 | #include "dictionary.h" |
c906108c | 43 | |
1b6bc7e0 CF |
44 | #include "coff-pe-read.h" |
45 | ||
ccefe4c4 TT |
46 | #include "psymtab.h" |
47 | ||
a14ed312 | 48 | extern void _initialize_coffread (void); |
392a587b | 49 | |
b8b98ad1 TT |
50 | /* Key for COFF-associated data. */ |
51 | ||
52 | static const struct objfile_data *coff_objfile_data_key; | |
53 | ||
91a81f69 TT |
54 | /* The objfile we are currently reading. */ |
55 | ||
dd707e8e | 56 | static struct objfile *coffread_objfile; |
91a81f69 | 57 | |
c5aa993b JM |
58 | struct coff_symfile_info |
59 | { | |
aff410f1 MS |
60 | file_ptr min_lineno_offset; /* Where in file lowest line#s are. */ |
61 | file_ptr max_lineno_offset; /* 1+last byte of line#s in file. */ | |
c906108c | 62 | |
aff410f1 MS |
63 | CORE_ADDR textaddr; /* Addr of .text section. */ |
64 | unsigned int textsize; /* Size of .text section. */ | |
c5aa993b | 65 | struct stab_section_list *stabsects; /* .stab sections. */ |
aff410f1 | 66 | asection *stabstrsect; /* Section pointer for .stab section. */ |
c5aa993b JM |
67 | char *stabstrdata; |
68 | }; | |
c906108c SS |
69 | |
70 | /* Translate an external name string into a user-visible name. */ | |
71 | #define EXTERNAL_NAME(string, abfd) \ | |
aff410f1 MS |
72 | (string[0] == bfd_get_symbol_leading_char (abfd) \ |
73 | ? string + 1 : string) | |
c906108c SS |
74 | |
75 | /* To be an sdb debug type, type must have at least a basic or primary | |
76 | derived type. Using this rather than checking against T_NULL is | |
77 | said to prevent core dumps if we try to operate on Michael Bloom | |
78 | dbx-in-coff file. */ | |
79 | ||
80 | #define SDB_TYPE(type) (BTYPE(type) | (type & N_TMASK)) | |
81 | ||
c906108c SS |
82 | /* Core address of start and end of text of current source file. |
83 | This comes from a ".text" symbol where x_nlinno > 0. */ | |
84 | ||
85 | static CORE_ADDR current_source_start_addr; | |
86 | static CORE_ADDR current_source_end_addr; | |
87 | ||
88 | /* The addresses of the symbol table stream and number of symbols | |
89 | of the object file we are reading (as copied into core). */ | |
90 | ||
91 | static bfd *nlist_bfd_global; | |
92 | static int nlist_nsyms_global; | |
93 | ||
c906108c | 94 | |
aff410f1 MS |
95 | /* Pointers to scratch storage, used for reading raw symbols and |
96 | auxents. */ | |
c906108c SS |
97 | |
98 | static char *temp_sym; | |
99 | static char *temp_aux; | |
100 | ||
101 | /* Local variables that hold the shift and mask values for the | |
102 | COFF file that we are currently reading. These come back to us | |
103 | from BFD, and are referenced by their macro names, as well as | |
104 | internally to the BTYPE, ISPTR, ISFCN, ISARY, ISTAG, and DECREF | |
105 | macros from include/coff/internal.h . */ | |
106 | ||
c5aa993b JM |
107 | static unsigned local_n_btmask; |
108 | static unsigned local_n_btshft; | |
109 | static unsigned local_n_tmask; | |
110 | static unsigned local_n_tshift; | |
c906108c SS |
111 | |
112 | #define N_BTMASK local_n_btmask | |
113 | #define N_BTSHFT local_n_btshft | |
114 | #define N_TMASK local_n_tmask | |
115 | #define N_TSHIFT local_n_tshift | |
c5aa993b | 116 | |
aff410f1 MS |
117 | /* Local variables that hold the sizes in the file of various COFF |
118 | structures. (We only need to know this to read them from the file | |
119 | -- BFD will then translate the data in them, into `internal_xxx' | |
120 | structs in the right byte order, alignment, etc.) */ | |
c906108c | 121 | |
c5aa993b JM |
122 | static unsigned local_linesz; |
123 | static unsigned local_symesz; | |
124 | static unsigned local_auxesz; | |
c906108c SS |
125 | |
126 | /* This is set if this is a PE format file. */ | |
127 | ||
128 | static int pe_file; | |
129 | ||
130 | /* Chain of typedefs of pointers to empty struct/union types. | |
131 | They are chained thru the SYMBOL_VALUE_CHAIN. */ | |
132 | ||
133 | static struct symbol *opaque_type_chain[HASHSIZE]; | |
134 | ||
aff410f1 | 135 | /* Simplified internal version of coff symbol table information. */ |
c906108c | 136 | |
c5aa993b JM |
137 | struct coff_symbol |
138 | { | |
139 | char *c_name; | |
aff410f1 MS |
140 | int c_symnum; /* Symbol number of this entry. */ |
141 | int c_naux; /* 0 if syment only, 1 if syment + | |
142 | auxent, etc. */ | |
5e8db398 | 143 | CORE_ADDR c_value; |
c5aa993b JM |
144 | int c_sclass; |
145 | int c_secnum; | |
146 | unsigned int c_type; | |
147 | }; | |
c906108c | 148 | |
a14ed312 | 149 | extern void stabsread_clear_cache (void); |
7be570e7 | 150 | |
5e2b427d UW |
151 | static struct type *coff_read_struct_type (int, int, int, |
152 | struct objfile *); | |
c906108c | 153 | |
a14ed312 | 154 | static struct type *decode_base_type (struct coff_symbol *, |
aff410f1 MS |
155 | unsigned int, |
156 | union internal_auxent *, | |
5e2b427d | 157 | struct objfile *); |
c906108c | 158 | |
a14ed312 | 159 | static struct type *decode_type (struct coff_symbol *, unsigned int, |
5e2b427d UW |
160 | union internal_auxent *, |
161 | struct objfile *); | |
c906108c | 162 | |
a14ed312 KB |
163 | static struct type *decode_function_type (struct coff_symbol *, |
164 | unsigned int, | |
5e2b427d UW |
165 | union internal_auxent *, |
166 | struct objfile *); | |
c906108c | 167 | |
5e2b427d UW |
168 | static struct type *coff_read_enum_type (int, int, int, |
169 | struct objfile *); | |
c906108c | 170 | |
a14ed312 KB |
171 | static struct symbol *process_coff_symbol (struct coff_symbol *, |
172 | union internal_auxent *, | |
173 | struct objfile *); | |
c906108c | 174 | |
a14ed312 | 175 | static void patch_opaque_types (struct symtab *); |
c906108c | 176 | |
a14ed312 | 177 | static void enter_linenos (long, int, int, struct objfile *); |
c906108c | 178 | |
a14ed312 | 179 | static void free_linetab (void); |
c906108c | 180 | |
74b7792f AC |
181 | static void free_linetab_cleanup (void *ignore); |
182 | ||
a14ed312 | 183 | static int init_lineno (bfd *, long, int); |
c906108c | 184 | |
a14ed312 | 185 | static char *getsymname (struct internal_syment *); |
c906108c | 186 | |
9f37bbcc | 187 | static const char *coff_getfilename (union internal_auxent *); |
c906108c | 188 | |
a14ed312 | 189 | static void free_stringtab (void); |
c906108c | 190 | |
74b7792f AC |
191 | static void free_stringtab_cleanup (void *ignore); |
192 | ||
a14ed312 | 193 | static int init_stringtab (bfd *, long); |
c906108c | 194 | |
a14ed312 | 195 | static void read_one_sym (struct coff_symbol *, |
aff410f1 MS |
196 | struct internal_syment *, |
197 | union internal_auxent *); | |
c906108c | 198 | |
a14ed312 | 199 | static void coff_symtab_read (long, unsigned int, struct objfile *); |
c906108c SS |
200 | \f |
201 | /* We are called once per section from coff_symfile_read. We | |
202 | need to examine each section we are passed, check to see | |
203 | if it is something we are interested in processing, and | |
204 | if so, stash away some access information for the section. | |
205 | ||
206 | FIXME: The section names should not be hardwired strings (what | |
207 | should they be? I don't think most object file formats have enough | |
208 | section flags to specify what kind of debug section it is | |
209 | -kingdon). */ | |
210 | ||
211 | static void | |
12b9c64f | 212 | coff_locate_sections (bfd *abfd, asection *sectp, void *csip) |
c906108c | 213 | { |
52f0bd74 | 214 | struct coff_symfile_info *csi; |
c906108c SS |
215 | const char *name; |
216 | ||
217 | csi = (struct coff_symfile_info *) csip; | |
218 | name = bfd_get_section_name (abfd, sectp); | |
7ecb6532 | 219 | if (strcmp (name, ".text") == 0) |
c906108c SS |
220 | { |
221 | csi->textaddr = bfd_section_vma (abfd, sectp); | |
222 | csi->textsize += bfd_section_size (abfd, sectp); | |
223 | } | |
224 | else if (strncmp (name, ".text", sizeof ".text" - 1) == 0) | |
225 | { | |
226 | csi->textsize += bfd_section_size (abfd, sectp); | |
227 | } | |
7ecb6532 | 228 | else if (strcmp (name, ".stabstr") == 0) |
c906108c SS |
229 | { |
230 | csi->stabstrsect = sectp; | |
231 | } | |
232 | else if (strncmp (name, ".stab", sizeof ".stab" - 1) == 0) | |
233 | { | |
234 | const char *s; | |
235 | ||
236 | /* We can have multiple .stab sections if linked with | |
237 | --split-by-reloc. */ | |
238 | for (s = name + sizeof ".stab" - 1; *s != '\0'; s++) | |
c5aa993b | 239 | if (!isdigit (*s)) |
c906108c SS |
240 | break; |
241 | if (*s == '\0') | |
242 | { | |
243 | struct stab_section_list *n, **pn; | |
244 | ||
245 | n = ((struct stab_section_list *) | |
246 | xmalloc (sizeof (struct stab_section_list))); | |
247 | n->section = sectp; | |
248 | n->next = NULL; | |
249 | for (pn = &csi->stabsects; *pn != NULL; pn = &(*pn)->next) | |
250 | ; | |
251 | *pn = n; | |
252 | ||
253 | /* This will be run after coffstab_build_psymtabs is called | |
c5aa993b JM |
254 | in coff_symfile_read, at which point we no longer need |
255 | the information. */ | |
b8c9b27d | 256 | make_cleanup (xfree, n); |
c906108c SS |
257 | } |
258 | } | |
259 | } | |
260 | ||
261 | /* Return the section_offsets* that CS points to. */ | |
a14ed312 | 262 | static int cs_to_section (struct coff_symbol *, struct objfile *); |
c906108c | 263 | |
c5aa993b JM |
264 | struct find_targ_sec_arg |
265 | { | |
266 | int targ_index; | |
267 | asection **resultp; | |
268 | }; | |
c906108c | 269 | |
c5aa993b | 270 | static void |
12b9c64f | 271 | find_targ_sec (bfd *abfd, asection *sect, void *obj) |
c906108c | 272 | { |
c5aa993b | 273 | struct find_targ_sec_arg *args = (struct find_targ_sec_arg *) obj; |
c5504eaf | 274 | |
c906108c SS |
275 | if (sect->target_index == args->targ_index) |
276 | *args->resultp = sect; | |
277 | } | |
278 | ||
fbcebcb1 DJ |
279 | /* Return the bfd_section that CS points to. */ |
280 | static struct bfd_section* | |
281 | cs_to_bfd_section (struct coff_symbol *cs, struct objfile *objfile) | |
c906108c SS |
282 | { |
283 | asection *sect = NULL; | |
284 | struct find_targ_sec_arg args; | |
c906108c SS |
285 | |
286 | args.targ_index = cs->c_secnum; | |
287 | args.resultp = § | |
288 | bfd_map_over_sections (objfile->obfd, find_targ_sec, &args); | |
fbcebcb1 DJ |
289 | return sect; |
290 | } | |
291 | ||
292 | /* Return the section number (SECT_OFF_*) that CS points to. */ | |
293 | static int | |
294 | cs_to_section (struct coff_symbol *cs, struct objfile *objfile) | |
295 | { | |
296 | asection *sect = cs_to_bfd_section (cs, objfile); | |
c5504eaf | 297 | |
05cfdb42 DJ |
298 | if (sect == NULL) |
299 | return SECT_OFF_TEXT (objfile); | |
300 | return sect->index; | |
c906108c SS |
301 | } |
302 | ||
303 | /* Return the address of the section of a COFF symbol. */ | |
304 | ||
a14ed312 | 305 | static CORE_ADDR cs_section_address (struct coff_symbol *, bfd *); |
c906108c SS |
306 | |
307 | static CORE_ADDR | |
fba45db2 | 308 | cs_section_address (struct coff_symbol *cs, bfd *abfd) |
c906108c SS |
309 | { |
310 | asection *sect = NULL; | |
311 | struct find_targ_sec_arg args; | |
312 | CORE_ADDR addr = 0; | |
313 | ||
314 | args.targ_index = cs->c_secnum; | |
315 | args.resultp = § | |
316 | bfd_map_over_sections (abfd, find_targ_sec, &args); | |
317 | if (sect != NULL) | |
81b9b86e | 318 | addr = bfd_get_section_vma (abfd, sect); |
c906108c SS |
319 | return addr; |
320 | } | |
321 | ||
322 | /* Look up a coff type-number index. Return the address of the slot | |
323 | where the type for that index is stored. | |
324 | The type-number is in INDEX. | |
325 | ||
326 | This can be used for finding the type associated with that index | |
327 | or for associating a new type with the index. */ | |
328 | ||
329 | static struct type ** | |
aa1ee363 | 330 | coff_lookup_type (int index) |
c906108c SS |
331 | { |
332 | if (index >= type_vector_length) | |
333 | { | |
334 | int old_vector_length = type_vector_length; | |
335 | ||
336 | type_vector_length *= 2; | |
c5aa993b | 337 | if (index /* is still */ >= type_vector_length) |
c906108c SS |
338 | type_vector_length = index * 2; |
339 | ||
340 | type_vector = (struct type **) | |
341 | xrealloc ((char *) type_vector, | |
342 | type_vector_length * sizeof (struct type *)); | |
343 | memset (&type_vector[old_vector_length], 0, | |
c5aa993b | 344 | (type_vector_length - old_vector_length) * sizeof (struct type *)); |
c906108c SS |
345 | } |
346 | return &type_vector[index]; | |
347 | } | |
348 | ||
349 | /* Make sure there is a type allocated for type number index | |
350 | and return the type object. | |
351 | This can create an empty (zeroed) type object. */ | |
352 | ||
353 | static struct type * | |
fba45db2 | 354 | coff_alloc_type (int index) |
c906108c | 355 | { |
52f0bd74 AC |
356 | struct type **type_addr = coff_lookup_type (index); |
357 | struct type *type = *type_addr; | |
c906108c SS |
358 | |
359 | /* If we are referring to a type not known at all yet, | |
360 | allocate an empty type for it. | |
361 | We will fill it in later if we find out how. */ | |
362 | if (type == NULL) | |
363 | { | |
dd707e8e | 364 | type = alloc_type (coffread_objfile); |
c906108c SS |
365 | *type_addr = type; |
366 | } | |
367 | return type; | |
368 | } | |
369 | \f | |
c906108c SS |
370 | /* Start a new symtab for a new source file. |
371 | This is called when a COFF ".file" symbol is seen; | |
372 | it indicates the start of data for one original source file. */ | |
373 | ||
374 | static void | |
9f37bbcc | 375 | coff_start_symtab (const char *name) |
c906108c SS |
376 | { |
377 | start_symtab ( | |
aff410f1 MS |
378 | /* We fill in the filename later. start_symtab puts this pointer |
379 | into last_source_file and we put it in subfiles->name, which | |
380 | end_symtab frees; that's why it must be malloc'd. */ | |
1b36a34b | 381 | xstrdup (name), |
c5aa993b JM |
382 | /* We never know the directory name for COFF. */ |
383 | NULL, | |
384 | /* The start address is irrelevant, since we set | |
385 | last_source_start_addr in coff_end_symtab. */ | |
386 | 0); | |
c906108c | 387 | record_debugformat ("COFF"); |
c906108c SS |
388 | } |
389 | ||
390 | /* Save the vital information from when starting to read a file, | |
391 | for use when closing off the current file. | |
aff410f1 MS |
392 | NAME is the file name the symbols came from, START_ADDR is the |
393 | first text address for the file, and SIZE is the number of bytes of | |
394 | text. */ | |
c906108c SS |
395 | |
396 | static void | |
9f37bbcc | 397 | complete_symtab (const char *name, CORE_ADDR start_addr, unsigned int size) |
c906108c SS |
398 | { |
399 | if (last_source_file != NULL) | |
b8c9b27d | 400 | xfree (last_source_file); |
1b36a34b | 401 | last_source_file = xstrdup (name); |
c906108c SS |
402 | current_source_start_addr = start_addr; |
403 | current_source_end_addr = start_addr + size; | |
c906108c SS |
404 | } |
405 | ||
aff410f1 MS |
406 | /* Finish the symbol definitions for one main source file, close off |
407 | all the lexical contexts for that file (creating struct block's for | |
408 | them), then make the struct symtab for that file and put it in the | |
409 | list of all such. */ | |
c906108c SS |
410 | |
411 | static void | |
fba45db2 | 412 | coff_end_symtab (struct objfile *objfile) |
c906108c | 413 | { |
c906108c SS |
414 | last_source_start_addr = current_source_start_addr; |
415 | ||
6b4511ab MS |
416 | end_symtab (current_source_end_addr, objfile, |
417 | SECT_OFF_TEXT (objfile)); | |
c906108c | 418 | |
aff410f1 | 419 | /* Reinitialize for beginning of new file. */ |
c906108c SS |
420 | last_source_file = NULL; |
421 | } | |
422 | \f | |
fbcebcb1 DJ |
423 | static struct minimal_symbol * |
424 | record_minimal_symbol (struct coff_symbol *cs, CORE_ADDR address, | |
425 | enum minimal_symbol_type type, int section, | |
426 | struct objfile *objfile) | |
c906108c | 427 | { |
fbcebcb1 | 428 | struct bfd_section *bfd_section; |
c5504eaf | 429 | |
aff410f1 | 430 | /* We don't want TDESC entry points in the minimal symbol table. */ |
fbcebcb1 DJ |
431 | if (cs->c_name[0] == '@') |
432 | return NULL; | |
c906108c | 433 | |
fbcebcb1 | 434 | bfd_section = cs_to_bfd_section (cs, objfile); |
aff410f1 MS |
435 | return prim_record_minimal_symbol_and_info (cs->c_name, address, |
436 | type, section, | |
437 | bfd_section, objfile); | |
c906108c SS |
438 | } |
439 | \f | |
440 | /* coff_symfile_init () | |
441 | is the coff-specific initialization routine for reading symbols. | |
442 | It is passed a struct objfile which contains, among other things, | |
443 | the BFD for the file whose symbols are being read, and a slot for | |
444 | a pointer to "private data" which we fill with cookies and other | |
445 | treats for coff_symfile_read (). | |
446 | ||
aff410f1 MS |
447 | We will only be called if this is a COFF or COFF-like file. BFD |
448 | handles figuring out the format of the file, and code in symtab.c | |
c906108c SS |
449 | uses BFD's determination to vector to us. |
450 | ||
aff410f1 MS |
451 | The ultimate result is a new symtab (or, FIXME, eventually a |
452 | psymtab). */ | |
c906108c SS |
453 | |
454 | static void | |
fba45db2 | 455 | coff_symfile_init (struct objfile *objfile) |
c906108c | 456 | { |
d2f4b8fe | 457 | struct dbx_symfile_info *dbx; |
b8b98ad1 | 458 | struct coff_symfile_info *coff; |
c906108c | 459 | |
d2f4b8fe TT |
460 | /* Allocate struct to keep track of stab reading. */ |
461 | dbx = XCNEW (struct dbx_symfile_info); | |
462 | set_objfile_data (objfile, dbx_objfile_data_key, dbx); | |
c906108c | 463 | |
aff410f1 | 464 | /* Allocate struct to keep track of the symfile. */ |
b8b98ad1 TT |
465 | coff = XCNEW (struct coff_symfile_info); |
466 | set_objfile_data (objfile, coff_objfile_data_key, coff); | |
c906108c SS |
467 | |
468 | /* COFF objects may be reordered, so set OBJF_REORDERED. If we | |
469 | find this causes a significant slowdown in gdb then we could | |
470 | set it in the debug symbol readers only when necessary. */ | |
471 | objfile->flags |= OBJF_REORDERED; | |
472 | ||
473 | init_entry_point_info (objfile); | |
474 | } | |
475 | ||
aff410f1 MS |
476 | /* This function is called for every section; it finds the outer |
477 | limits of the line table (minimum and maximum file offset) so that | |
478 | the mainline code can read the whole thing for efficiency. */ | |
c906108c | 479 | |
c906108c | 480 | static void |
7be0c536 | 481 | find_linenos (bfd *abfd, struct bfd_section *asect, void *vpinfo) |
c906108c SS |
482 | { |
483 | struct coff_symfile_info *info; | |
484 | int size, count; | |
485 | file_ptr offset, maxoff; | |
486 | ||
aff410f1 | 487 | /* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */ |
c906108c | 488 | count = asect->lineno_count; |
aff410f1 | 489 | /* End of warning. */ |
c906108c SS |
490 | |
491 | if (count == 0) | |
492 | return; | |
493 | size = count * local_linesz; | |
494 | ||
c5aa993b | 495 | info = (struct coff_symfile_info *) vpinfo; |
aff410f1 | 496 | /* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */ |
c906108c | 497 | offset = asect->line_filepos; |
aff410f1 | 498 | /* End of warning. */ |
c906108c SS |
499 | |
500 | if (offset < info->min_lineno_offset || info->min_lineno_offset == 0) | |
501 | info->min_lineno_offset = offset; | |
502 | ||
503 | maxoff = offset + size; | |
504 | if (maxoff > info->max_lineno_offset) | |
505 | info->max_lineno_offset = maxoff; | |
506 | } | |
507 | ||
508 | ||
509 | /* The BFD for this file -- only good while we're actively reading | |
510 | symbols into a psymtab or a symtab. */ | |
511 | ||
512 | static bfd *symfile_bfd; | |
513 | ||
514 | /* Read a symbol file, after initialization by coff_symfile_init. */ | |
515 | ||
c906108c | 516 | static void |
f4352531 | 517 | coff_symfile_read (struct objfile *objfile, int symfile_flags) |
c906108c SS |
518 | { |
519 | struct coff_symfile_info *info; | |
520 | struct dbx_symfile_info *dbxinfo; | |
521 | bfd *abfd = objfile->obfd; | |
522 | coff_data_type *cdata = coff_data (abfd); | |
523 | char *name = bfd_get_filename (abfd); | |
52f0bd74 | 524 | int val; |
745b8ca0 | 525 | unsigned int num_symbols; |
c906108c SS |
526 | int symtab_offset; |
527 | int stringtab_offset; | |
7134143f | 528 | struct cleanup *back_to, *cleanup_minimal_symbols; |
c906108c | 529 | int stabstrsize; |
c2d11a7d | 530 | |
b8b98ad1 | 531 | info = objfile_data (objfile, coff_objfile_data_key); |
d2f4b8fe | 532 | dbxinfo = DBX_SYMFILE_INFO (objfile); |
aff410f1 | 533 | symfile_bfd = abfd; /* Kludge for swap routines. */ |
c906108c SS |
534 | |
535 | /* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */ | |
c5aa993b JM |
536 | num_symbols = bfd_get_symcount (abfd); /* How many syms */ |
537 | symtab_offset = cdata->sym_filepos; /* Symbol table file offset */ | |
538 | stringtab_offset = symtab_offset + /* String table file offset */ | |
539 | num_symbols * cdata->local_symesz; | |
c906108c SS |
540 | |
541 | /* Set a few file-statics that give us specific information about | |
542 | the particular COFF file format we're reading. */ | |
c906108c SS |
543 | local_n_btmask = cdata->local_n_btmask; |
544 | local_n_btshft = cdata->local_n_btshft; | |
c5aa993b | 545 | local_n_tmask = cdata->local_n_tmask; |
c906108c | 546 | local_n_tshift = cdata->local_n_tshift; |
c5aa993b JM |
547 | local_linesz = cdata->local_linesz; |
548 | local_symesz = cdata->local_symesz; | |
549 | local_auxesz = cdata->local_auxesz; | |
c906108c SS |
550 | |
551 | /* Allocate space for raw symbol and aux entries, based on their | |
552 | space requirements as reported by BFD. */ | |
553 | temp_sym = (char *) xmalloc | |
c5aa993b | 554 | (cdata->local_symesz + cdata->local_auxesz); |
c906108c | 555 | temp_aux = temp_sym + cdata->local_symesz; |
c13c43fd | 556 | back_to = make_cleanup (free_current_contents, &temp_sym); |
c906108c SS |
557 | |
558 | /* We need to know whether this is a PE file, because in PE files, | |
559 | unlike standard COFF files, symbol values are stored as offsets | |
560 | from the section address, rather than as absolute addresses. | |
561 | FIXME: We should use BFD to read the symbol table, and thus avoid | |
562 | this problem. */ | |
0d06e24b JM |
563 | pe_file = |
564 | strncmp (bfd_get_target (objfile->obfd), "pe", 2) == 0 | |
565 | || strncmp (bfd_get_target (objfile->obfd), "epoc-pe", 7) == 0; | |
c906108c | 566 | |
aff410f1 | 567 | /* End of warning. */ |
c906108c | 568 | |
c906108c SS |
569 | info->min_lineno_offset = 0; |
570 | info->max_lineno_offset = 0; | |
c906108c | 571 | |
ebeb39fe JB |
572 | /* Only read line number information if we have symbols. |
573 | ||
574 | On Windows NT, some of the system's DLL's have sections with | |
575 | PointerToLinenumbers fields that are non-zero, but point at | |
576 | random places within the image file. (In the case I found, | |
577 | KERNEL32.DLL's .text section has a line number info pointer that | |
578 | points into the middle of the string `lib\\i386\kernel32.dll'.) | |
579 | ||
580 | However, these DLL's also have no symbols. The line number | |
581 | tables are meaningless without symbols. And in fact, GDB never | |
582 | uses the line number information unless there are symbols. So we | |
583 | can avoid spurious error messages (and maybe run a little | |
584 | faster!) by not even reading the line number table unless we have | |
585 | symbols. */ | |
586 | if (num_symbols > 0) | |
587 | { | |
588 | /* Read the line number table, all at once. */ | |
589 | bfd_map_over_sections (abfd, find_linenos, (void *) info); | |
590 | ||
591 | make_cleanup (free_linetab_cleanup, 0 /*ignore*/); | |
592 | val = init_lineno (abfd, info->min_lineno_offset, | |
593 | info->max_lineno_offset - info->min_lineno_offset); | |
594 | if (val < 0) | |
8a3fe4f8 | 595 | error (_("\"%s\": error reading line numbers."), name); |
ebeb39fe | 596 | } |
c906108c SS |
597 | |
598 | /* Now read the string table, all at once. */ | |
599 | ||
74b7792f | 600 | make_cleanup (free_stringtab_cleanup, 0 /*ignore*/); |
c906108c SS |
601 | val = init_stringtab (abfd, stringtab_offset); |
602 | if (val < 0) | |
3d263c1d | 603 | error (_("\"%s\": can't get string table"), name); |
c906108c SS |
604 | |
605 | init_minimal_symbol_collection (); | |
7134143f | 606 | cleanup_minimal_symbols = make_cleanup_discard_minimal_symbols (); |
c906108c SS |
607 | |
608 | /* Now that the executable file is positioned at symbol table, | |
609 | process it and define symbols accordingly. */ | |
610 | ||
96baa820 | 611 | coff_symtab_read ((long) symtab_offset, num_symbols, objfile); |
c906108c | 612 | |
aff410f1 MS |
613 | /* Install any minimal symbols that have been collected as the |
614 | current minimal symbols for this objfile. */ | |
c906108c SS |
615 | |
616 | install_minimal_symbols (objfile); | |
617 | ||
7134143f DJ |
618 | /* Free the installed minimal symbol data. */ |
619 | do_cleanups (cleanup_minimal_symbols); | |
620 | ||
12b9c64f | 621 | bfd_map_over_sections (abfd, coff_locate_sections, (void *) info); |
c906108c SS |
622 | |
623 | if (info->stabsects) | |
624 | { | |
c5aa993b | 625 | if (!info->stabstrsect) |
b83266a0 | 626 | { |
3e43a32a MS |
627 | error (_("The debugging information in `%s' is corrupted.\nThe " |
628 | "file has a `.stabs' section, but no `.stabstr' section."), | |
255e7dbf | 629 | name); |
b83266a0 SS |
630 | } |
631 | ||
c906108c | 632 | /* FIXME: dubious. Why can't we use something normal like |
c5aa993b | 633 | bfd_get_section_contents? */ |
c906108c SS |
634 | bfd_seek (abfd, abfd->where, 0); |
635 | ||
636 | stabstrsize = bfd_section_size (abfd, info->stabstrsect); | |
637 | ||
638 | coffstab_build_psymtabs (objfile, | |
c906108c SS |
639 | info->textaddr, info->textsize, |
640 | info->stabsects, | |
641 | info->stabstrsect->filepos, stabstrsize); | |
642 | } | |
251d32d9 | 643 | if (dwarf2_has_info (objfile, NULL)) |
42a076f0 EZ |
644 | { |
645 | /* DWARF2 sections. */ | |
f29dff0a | 646 | dwarf2_build_psymtabs (objfile); |
42a076f0 | 647 | } |
c906108c | 648 | |
fea25152 BF |
649 | dwarf2_build_frame_info (objfile); |
650 | ||
9cce227f TG |
651 | /* Try to add separate debug file if no symbols table found. */ |
652 | if (!objfile_has_partial_symbols (objfile)) | |
653 | { | |
654 | char *debugfile; | |
655 | ||
656 | debugfile = find_separate_debug_file_by_debuglink (objfile); | |
8ac244b4 | 657 | make_cleanup (xfree, debugfile); |
9cce227f TG |
658 | |
659 | if (debugfile) | |
660 | { | |
661 | bfd *abfd = symfile_bfd_open (debugfile); | |
c5504eaf | 662 | |
8ac244b4 | 663 | make_cleanup_bfd_unref (abfd); |
9cce227f | 664 | symbol_file_add_separate (abfd, symfile_flags, objfile); |
9cce227f TG |
665 | } |
666 | } | |
667 | ||
c906108c SS |
668 | do_cleanups (back_to); |
669 | } | |
670 | ||
671 | static void | |
fba45db2 | 672 | coff_new_init (struct objfile *ignore) |
c906108c SS |
673 | { |
674 | } | |
675 | ||
aff410f1 MS |
676 | /* Perform any local cleanups required when we are done with a |
677 | particular objfile. I.E, we are in the process of discarding all | |
678 | symbol information for an objfile, freeing up all memory held for | |
679 | it, and unlinking the objfile struct from the global list of known | |
680 | objfiles. */ | |
c906108c SS |
681 | |
682 | static void | |
fba45db2 | 683 | coff_symfile_finish (struct objfile *objfile) |
c906108c | 684 | { |
aff410f1 | 685 | /* Let stabs reader clean up. */ |
7be570e7 | 686 | stabsread_clear_cache (); |
fe3e1990 DJ |
687 | |
688 | dwarf2_free_objfile (objfile); | |
c906108c | 689 | } |
c906108c | 690 | \f |
c5aa993b | 691 | |
c906108c SS |
692 | /* Given pointers to a symbol table in coff style exec file, |
693 | analyze them and create struct symtab's describing the symbols. | |
694 | NSYMS is the number of symbols in the symbol table. | |
695 | We read them one at a time using read_one_sym (). */ | |
696 | ||
697 | static void | |
fba45db2 KB |
698 | coff_symtab_read (long symtab_offset, unsigned int nsyms, |
699 | struct objfile *objfile) | |
c906108c | 700 | { |
5e2b427d | 701 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
52f0bd74 | 702 | struct context_stack *new; |
c906108c | 703 | struct coff_symbol coff_symbol; |
52f0bd74 | 704 | struct coff_symbol *cs = &coff_symbol; |
c906108c SS |
705 | static struct internal_syment main_sym; |
706 | static union internal_auxent main_aux; | |
707 | struct coff_symbol fcn_cs_saved; | |
708 | static struct internal_syment fcn_sym_saved; | |
709 | static union internal_auxent fcn_aux_saved; | |
710 | struct symtab *s; | |
711 | /* A .file is open. */ | |
712 | int in_source_file = 0; | |
713 | int next_file_symnum = -1; | |
714 | /* Name of the current file. */ | |
9f37bbcc | 715 | const char *filestring = ""; |
c906108c SS |
716 | int depth = 0; |
717 | int fcn_first_line = 0; | |
b9179dbc | 718 | CORE_ADDR fcn_first_line_addr = 0; |
c906108c SS |
719 | int fcn_last_line = 0; |
720 | int fcn_start_addr = 0; | |
721 | long fcn_line_ptr = 0; | |
722 | int val; | |
723 | CORE_ADDR tmpaddr; | |
05cfdb42 | 724 | struct minimal_symbol *msym; |
c906108c SS |
725 | |
726 | /* Work around a stdio bug in SunOS4.1.1 (this makes me nervous.... | |
aff410f1 MS |
727 | it's hard to know I've really worked around it. The fix should |
728 | be harmless, anyway). The symptom of the bug is that the first | |
c906108c SS |
729 | fread (in read_one_sym), will (in my example) actually get data |
730 | from file offset 268, when the fseek was to 264 (and ftell shows | |
731 | 264). This causes all hell to break loose. I was unable to | |
732 | reproduce this on a short test program which operated on the same | |
733 | file, performing (I think) the same sequence of operations. | |
734 | ||
735 | It stopped happening when I put in this (former) rewind(). | |
736 | ||
737 | FIXME: Find out if this has been reported to Sun, whether it has | |
738 | been fixed in a later release, etc. */ | |
739 | ||
740 | bfd_seek (objfile->obfd, 0, 0); | |
741 | ||
aff410f1 | 742 | /* Position to read the symbol table. */ |
c906108c SS |
743 | val = bfd_seek (objfile->obfd, (long) symtab_offset, 0); |
744 | if (val < 0) | |
745 | perror_with_name (objfile->name); | |
746 | ||
dd707e8e | 747 | coffread_objfile = objfile; |
c906108c SS |
748 | nlist_bfd_global = objfile->obfd; |
749 | nlist_nsyms_global = nsyms; | |
750 | last_source_file = NULL; | |
751 | memset (opaque_type_chain, 0, sizeof opaque_type_chain); | |
752 | ||
aff410f1 | 753 | if (type_vector) /* Get rid of previous one. */ |
b8c9b27d | 754 | xfree (type_vector); |
c906108c SS |
755 | type_vector_length = 160; |
756 | type_vector = (struct type **) | |
757 | xmalloc (type_vector_length * sizeof (struct type *)); | |
758 | memset (type_vector, 0, type_vector_length * sizeof (struct type *)); | |
759 | ||
760 | coff_start_symtab (""); | |
761 | ||
762 | symnum = 0; | |
763 | while (symnum < nsyms) | |
764 | { | |
765 | QUIT; /* Make this command interruptable. */ | |
766 | ||
767 | read_one_sym (cs, &main_sym, &main_aux); | |
768 | ||
769 | if (cs->c_symnum == next_file_symnum && cs->c_sclass != C_FILE) | |
770 | { | |
771 | if (last_source_file) | |
772 | coff_end_symtab (objfile); | |
773 | ||
774 | coff_start_symtab ("_globals_"); | |
969107c5 EZ |
775 | /* coff_start_symtab will set the language of this symtab to |
776 | language_unknown, since such a ``file name'' is not | |
777 | recognized. Override that with the minimal language to | |
778 | allow printing values in this symtab. */ | |
779 | current_subfile->language = language_minimal; | |
c906108c | 780 | complete_symtab ("_globals_", 0, 0); |
aff410f1 MS |
781 | /* Done with all files, everything from here on out is |
782 | globals. */ | |
c906108c SS |
783 | } |
784 | ||
aff410f1 MS |
785 | /* Special case for file with type declarations only, no |
786 | text. */ | |
c906108c SS |
787 | if (!last_source_file && SDB_TYPE (cs->c_type) |
788 | && cs->c_secnum == N_DEBUG) | |
789 | complete_symtab (filestring, 0, 0); | |
790 | ||
791 | /* Typedefs should not be treated as symbol definitions. */ | |
792 | if (ISFCN (cs->c_type) && cs->c_sclass != C_TPDEF) | |
793 | { | |
aff410f1 MS |
794 | /* Record all functions -- external and static -- in |
795 | minsyms. */ | |
fbcebcb1 | 796 | int section = cs_to_section (cs, objfile); |
c5504eaf | 797 | |
aff410f1 MS |
798 | tmpaddr = cs->c_value + ANOFFSET (objfile->section_offsets, |
799 | SECT_OFF_TEXT (objfile)); | |
800 | record_minimal_symbol (cs, tmpaddr, mst_text, | |
801 | section, objfile); | |
c906108c SS |
802 | |
803 | fcn_line_ptr = main_aux.x_sym.x_fcnary.x_fcn.x_lnnoptr; | |
804 | fcn_start_addr = tmpaddr; | |
805 | fcn_cs_saved = *cs; | |
806 | fcn_sym_saved = main_sym; | |
807 | fcn_aux_saved = main_aux; | |
808 | continue; | |
809 | } | |
810 | ||
811 | switch (cs->c_sclass) | |
812 | { | |
c5aa993b JM |
813 | case C_EFCN: |
814 | case C_EXTDEF: | |
815 | case C_ULABEL: | |
816 | case C_USTATIC: | |
817 | case C_LINE: | |
818 | case C_ALIAS: | |
819 | case C_HIDDEN: | |
aff410f1 MS |
820 | complaint (&symfile_complaints, |
821 | _("Bad n_sclass for symbol %s"), | |
23136709 | 822 | cs->c_name); |
c5aa993b | 823 | break; |
c906108c | 824 | |
c5aa993b | 825 | case C_FILE: |
aff410f1 MS |
826 | /* c_value field contains symnum of next .file entry in |
827 | table or symnum of first global after last .file. */ | |
c5aa993b JM |
828 | next_file_symnum = cs->c_value; |
829 | if (cs->c_naux > 0) | |
830 | filestring = coff_getfilename (&main_aux); | |
831 | else | |
832 | filestring = ""; | |
833 | ||
834 | /* Complete symbol table for last object file | |
835 | containing debugging information. */ | |
836 | if (last_source_file) | |
837 | { | |
838 | coff_end_symtab (objfile); | |
839 | coff_start_symtab (filestring); | |
840 | } | |
841 | in_source_file = 1; | |
842 | break; | |
c906108c | 843 | |
aff410f1 MS |
844 | /* C_LABEL is used for labels and static functions. |
845 | Including it here allows gdb to see static functions when | |
846 | no debug info is available. */ | |
c5aa993b | 847 | case C_LABEL: |
aff410f1 MS |
848 | /* However, labels within a function can make weird |
849 | backtraces, so filter them out (from phdm@macqel.be). */ | |
c5aa993b JM |
850 | if (within_function) |
851 | break; | |
852 | case C_STAT: | |
853 | case C_THUMBLABEL: | |
854 | case C_THUMBSTAT: | |
855 | case C_THUMBSTATFUNC: | |
856 | if (cs->c_name[0] == '.') | |
857 | { | |
7ecb6532 | 858 | if (strcmp (cs->c_name, ".text") == 0) |
c5aa993b | 859 | { |
aff410f1 MS |
860 | /* FIXME: don't wire in ".text" as section name or |
861 | symbol name! */ | |
862 | /* Check for in_source_file deals with case of a | |
863 | file with debugging symbols followed by a later | |
864 | file with no symbols. */ | |
c906108c SS |
865 | if (in_source_file) |
866 | complete_symtab (filestring, | |
aff410f1 MS |
867 | cs->c_value + ANOFFSET (objfile->section_offsets, |
868 | SECT_OFF_TEXT (objfile)), | |
c906108c SS |
869 | main_aux.x_scn.x_scnlen); |
870 | in_source_file = 0; | |
871 | } | |
aff410f1 | 872 | /* Flush rest of '.' symbols. */ |
c906108c | 873 | break; |
c5aa993b JM |
874 | } |
875 | else if (!SDB_TYPE (cs->c_type) | |
876 | && cs->c_name[0] == 'L' | |
877 | && (strncmp (cs->c_name, "LI%", 3) == 0 | |
878 | || strncmp (cs->c_name, "LF%", 3) == 0 | |
879 | || strncmp (cs->c_name, "LC%", 3) == 0 | |
880 | || strncmp (cs->c_name, "LP%", 3) == 0 | |
881 | || strncmp (cs->c_name, "LPB%", 4) == 0 | |
882 | || strncmp (cs->c_name, "LBB%", 4) == 0 | |
883 | || strncmp (cs->c_name, "LBE%", 4) == 0 | |
884 | || strncmp (cs->c_name, "LPBX%", 5) == 0)) | |
885 | /* At least on a 3b1, gcc generates swbeg and string labels | |
886 | that look like this. Ignore them. */ | |
887 | break; | |
aff410f1 | 888 | /* Fall in for static symbols that don't start with '.' */ |
c5aa993b JM |
889 | case C_THUMBEXT: |
890 | case C_THUMBEXTFUNC: | |
891 | case C_EXT: | |
892 | { | |
893 | /* Record it in the minimal symbols regardless of | |
894 | SDB_TYPE. This parallels what we do for other debug | |
895 | formats, and probably is needed to make | |
896 | print_address_symbolic work right without the (now | |
897 | gone) "set fast-symbolic-addr off" kludge. */ | |
c906108c | 898 | |
c5aa993b JM |
899 | enum minimal_symbol_type ms_type; |
900 | int sec; | |
c906108c | 901 | |
c5aa993b JM |
902 | if (cs->c_secnum == N_UNDEF) |
903 | { | |
d4862372 JB |
904 | /* This is a common symbol. We used to rely on |
905 | the target to tell us whether it knows where | |
906 | the symbol has been relocated to, but none of | |
907 | the target implementations actually provided | |
908 | that operation. So we just ignore the symbol, | |
909 | the same way we would do if we had a target-side | |
910 | symbol lookup which returned no match. */ | |
911 | break; | |
c5aa993b | 912 | } |
182d43bc EZ |
913 | else if (cs->c_secnum == N_ABS) |
914 | { | |
915 | /* Use the correct minimal symbol type (and don't | |
aff410f1 | 916 | relocate) for absolute values. */ |
182d43bc EZ |
917 | ms_type = mst_abs; |
918 | sec = cs_to_section (cs, objfile); | |
919 | tmpaddr = cs->c_value; | |
920 | } | |
c5aa993b JM |
921 | else |
922 | { | |
05cfdb42 | 923 | asection *bfd_section = cs_to_bfd_section (cs, objfile); |
c5504eaf | 924 | |
c5aa993b JM |
925 | sec = cs_to_section (cs, objfile); |
926 | tmpaddr = cs->c_value; | |
aff410f1 | 927 | /* Statics in a PE file also get relocated. */ |
182d43bc EZ |
928 | if (cs->c_sclass == C_EXT |
929 | || cs->c_sclass == C_THUMBEXTFUNC | |
930 | || cs->c_sclass == C_THUMBEXT | |
931 | || (pe_file && (cs->c_sclass == C_STAT))) | |
96baa820 | 932 | tmpaddr += ANOFFSET (objfile->section_offsets, sec); |
c906108c | 933 | |
05cfdb42 | 934 | if (bfd_section->flags & SEC_CODE) |
c5aa993b | 935 | { |
c5aa993b JM |
936 | ms_type = |
937 | cs->c_sclass == C_EXT || cs->c_sclass == C_THUMBEXTFUNC | |
938 | || cs->c_sclass == C_THUMBEXT ? | |
939 | mst_text : mst_file_text; | |
85ddcc70 | 940 | tmpaddr = gdbarch_addr_bits_remove (gdbarch, tmpaddr); |
b8fbeb18 | 941 | } |
05cfdb42 DJ |
942 | else if (bfd_section->flags & SEC_ALLOC |
943 | && bfd_section->flags & SEC_LOAD) | |
34e924c0 | 944 | { |
c5aa993b | 945 | ms_type = |
aff410f1 MS |
946 | cs->c_sclass == C_EXT || cs->c_sclass == C_THUMBEXT |
947 | ? mst_data : mst_file_data; | |
34e924c0 | 948 | } |
05cfdb42 | 949 | else if (bfd_section->flags & SEC_ALLOC) |
34e924c0 | 950 | { |
c5aa993b | 951 | ms_type = |
aff410f1 MS |
952 | cs->c_sclass == C_EXT || cs->c_sclass == C_THUMBEXT |
953 | ? mst_bss : mst_file_bss; | |
34e924c0 EZ |
954 | } |
955 | else | |
956 | ms_type = mst_unknown; | |
c5aa993b | 957 | } |
c906108c | 958 | |
aff410f1 MS |
959 | msym = record_minimal_symbol (cs, tmpaddr, ms_type, |
960 | sec, objfile); | |
05cfdb42 | 961 | if (msym) |
aff410f1 MS |
962 | gdbarch_coff_make_msymbol_special (gdbarch, |
963 | cs->c_sclass, msym); | |
fbcebcb1 | 964 | |
c5aa993b JM |
965 | if (SDB_TYPE (cs->c_type)) |
966 | { | |
967 | struct symbol *sym; | |
c5504eaf | 968 | |
c5aa993b | 969 | sym = process_coff_symbol |
96baa820 | 970 | (cs, &main_aux, objfile); |
c5aa993b JM |
971 | SYMBOL_VALUE (sym) = tmpaddr; |
972 | SYMBOL_SECTION (sym) = sec; | |
973 | } | |
974 | } | |
975 | break; | |
976 | ||
977 | case C_FCN: | |
7ecb6532 | 978 | if (strcmp (cs->c_name, ".bf") == 0) |
c5aa993b JM |
979 | { |
980 | within_function = 1; | |
981 | ||
aff410f1 MS |
982 | /* Value contains address of first non-init type |
983 | code. */ | |
c5aa993b | 984 | /* main_aux.x_sym.x_misc.x_lnsz.x_lnno |
aff410f1 | 985 | contains line number of '{' }. */ |
c5aa993b | 986 | if (cs->c_naux != 1) |
23136709 | 987 | complaint (&symfile_complaints, |
aff410f1 MS |
988 | _("`.bf' symbol %d has no aux entry"), |
989 | cs->c_symnum); | |
c5aa993b JM |
990 | fcn_first_line = main_aux.x_sym.x_misc.x_lnsz.x_lnno; |
991 | fcn_first_line_addr = cs->c_value; | |
992 | ||
993 | /* Might want to check that locals are 0 and | |
994 | context_stack_depth is zero, and complain if not. */ | |
995 | ||
996 | depth = 0; | |
997 | new = push_context (depth, fcn_start_addr); | |
998 | fcn_cs_saved.c_name = getsymname (&fcn_sym_saved); | |
999 | new->name = | |
aff410f1 MS |
1000 | process_coff_symbol (&fcn_cs_saved, |
1001 | &fcn_aux_saved, objfile); | |
c5aa993b | 1002 | } |
7ecb6532 | 1003 | else if (strcmp (cs->c_name, ".ef") == 0) |
c5aa993b | 1004 | { |
b9179dbc | 1005 | if (!within_function) |
8a3fe4f8 | 1006 | error (_("Bad coff function information.")); |
aff410f1 | 1007 | /* The value of .ef is the address of epilogue code; |
c5aa993b JM |
1008 | not useful for gdb. */ |
1009 | /* { main_aux.x_sym.x_misc.x_lnsz.x_lnno | |
1010 | contains number of lines to '}' */ | |
1011 | ||
1012 | if (context_stack_depth <= 0) | |
aff410f1 | 1013 | { /* We attempted to pop an empty context stack. */ |
23136709 | 1014 | complaint (&symfile_complaints, |
3e43a32a MS |
1015 | _("`.ef' symbol without matching `.bf' " |
1016 | "symbol ignored starting at symnum %d"), | |
23136709 | 1017 | cs->c_symnum); |
c5aa993b JM |
1018 | within_function = 0; |
1019 | break; | |
c906108c | 1020 | } |
c5aa993b JM |
1021 | |
1022 | new = pop_context (); | |
1023 | /* Stack must be empty now. */ | |
1024 | if (context_stack_depth > 0 || new == NULL) | |
c906108c | 1025 | { |
23136709 | 1026 | complaint (&symfile_complaints, |
3e43a32a MS |
1027 | _("Unmatched .ef symbol(s) ignored " |
1028 | "starting at symnum %d"), | |
23136709 | 1029 | cs->c_symnum); |
c5aa993b JM |
1030 | within_function = 0; |
1031 | break; | |
c906108c | 1032 | } |
c5aa993b JM |
1033 | if (cs->c_naux != 1) |
1034 | { | |
23136709 | 1035 | complaint (&symfile_complaints, |
aff410f1 MS |
1036 | _("`.ef' symbol %d has no aux entry"), |
1037 | cs->c_symnum); | |
c5aa993b JM |
1038 | fcn_last_line = 0x7FFFFFFF; |
1039 | } | |
1040 | else | |
1041 | { | |
1042 | fcn_last_line = main_aux.x_sym.x_misc.x_lnsz.x_lnno; | |
1043 | } | |
1044 | /* fcn_first_line is the line number of the opening '{'. | |
1045 | Do not record it - because it would affect gdb's idea | |
aff410f1 MS |
1046 | of the line number of the first statement of the |
1047 | function - except for one-line functions, for which | |
1048 | it is also the line number of all the statements and | |
1049 | of the closing '}', and for which we do not have any | |
1050 | other statement-line-number. */ | |
c5aa993b JM |
1051 | if (fcn_last_line == 1) |
1052 | record_line (current_subfile, fcn_first_line, | |
fbf65064 UW |
1053 | gdbarch_addr_bits_remove (gdbarch, |
1054 | fcn_first_line_addr)); | |
c5aa993b | 1055 | else |
aff410f1 MS |
1056 | enter_linenos (fcn_line_ptr, fcn_first_line, |
1057 | fcn_last_line, objfile); | |
c906108c | 1058 | |
aff410f1 MS |
1059 | finish_block (new->name, &local_symbols, |
1060 | new->old_blocks, new->start_addr, | |
c5aa993b JM |
1061 | fcn_cs_saved.c_value |
1062 | + fcn_aux_saved.x_sym.x_misc.x_fsize | |
aff410f1 MS |
1063 | + ANOFFSET (objfile->section_offsets, |
1064 | SECT_OFF_TEXT (objfile)), | |
c5aa993b JM |
1065 | objfile |
1066 | ); | |
1067 | within_function = 0; | |
1068 | } | |
1069 | break; | |
c906108c | 1070 | |
c5aa993b | 1071 | case C_BLOCK: |
7ecb6532 | 1072 | if (strcmp (cs->c_name, ".bb") == 0) |
c5aa993b JM |
1073 | { |
1074 | tmpaddr = cs->c_value; | |
aff410f1 MS |
1075 | tmpaddr += ANOFFSET (objfile->section_offsets, |
1076 | SECT_OFF_TEXT (objfile)); | |
c5aa993b JM |
1077 | push_context (++depth, tmpaddr); |
1078 | } | |
7ecb6532 | 1079 | else if (strcmp (cs->c_name, ".eb") == 0) |
c5aa993b JM |
1080 | { |
1081 | if (context_stack_depth <= 0) | |
0963b4bd | 1082 | { /* We attempted to pop an empty context stack. */ |
23136709 | 1083 | complaint (&symfile_complaints, |
3e43a32a MS |
1084 | _("`.eb' symbol without matching `.bb' " |
1085 | "symbol ignored starting at symnum %d"), | |
23136709 | 1086 | cs->c_symnum); |
c5aa993b JM |
1087 | break; |
1088 | } | |
c906108c | 1089 | |
c5aa993b JM |
1090 | new = pop_context (); |
1091 | if (depth-- != new->depth) | |
1092 | { | |
3e43a32a MS |
1093 | complaint (&symfile_complaints, |
1094 | _("Mismatched .eb symbol ignored " | |
1095 | "starting at symnum %d"), | |
23136709 | 1096 | symnum); |
c5aa993b JM |
1097 | break; |
1098 | } | |
1099 | if (local_symbols && context_stack_depth > 0) | |
1100 | { | |
1101 | tmpaddr = | |
aff410f1 MS |
1102 | cs->c_value + ANOFFSET (objfile->section_offsets, |
1103 | SECT_OFF_TEXT (objfile)); | |
c5aa993b JM |
1104 | /* Make a block for the local symbols within. */ |
1105 | finish_block (0, &local_symbols, new->old_blocks, | |
1106 | new->start_addr, tmpaddr, objfile); | |
1107 | } | |
1108 | /* Now pop locals of block just finished. */ | |
1109 | local_symbols = new->locals; | |
1110 | } | |
1111 | break; | |
c906108c | 1112 | |
c5aa993b | 1113 | default: |
96baa820 | 1114 | process_coff_symbol (cs, &main_aux, objfile); |
c5aa993b | 1115 | break; |
c906108c SS |
1116 | } |
1117 | } | |
1118 | ||
1b6bc7e0 CF |
1119 | if ((nsyms == 0) && (pe_file)) |
1120 | { | |
c2f20dd6 | 1121 | /* We've got no debugging symbols, but it's a portable |
aff410f1 | 1122 | executable, so try to read the export table. */ |
1b6bc7e0 CF |
1123 | read_pe_exported_syms (objfile); |
1124 | } | |
1125 | ||
c906108c SS |
1126 | if (last_source_file) |
1127 | coff_end_symtab (objfile); | |
1128 | ||
1129 | /* Patch up any opaque types (references to types that are not defined | |
1130 | in the file where they are referenced, e.g. "struct foo *bar"). */ | |
1131 | ALL_OBJFILE_SYMTABS (objfile, s) | |
1132 | patch_opaque_types (s); | |
1133 | ||
dd707e8e | 1134 | coffread_objfile = NULL; |
c906108c SS |
1135 | } |
1136 | \f | |
1137 | /* Routines for reading headers and symbols from executable. */ | |
1138 | ||
aff410f1 MS |
1139 | /* Read the next symbol, swap it, and return it in both |
1140 | internal_syment form, and coff_symbol form. Also return its first | |
1141 | auxent, if any, in internal_auxent form, and skip any other | |
1142 | auxents. */ | |
c906108c SS |
1143 | |
1144 | static void | |
aa1ee363 AC |
1145 | read_one_sym (struct coff_symbol *cs, |
1146 | struct internal_syment *sym, | |
1147 | union internal_auxent *aux) | |
c906108c SS |
1148 | { |
1149 | int i; | |
3b016d57 | 1150 | bfd_size_type bytes; |
c906108c SS |
1151 | |
1152 | cs->c_symnum = symnum; | |
3b016d57 DJ |
1153 | bytes = bfd_bread (temp_sym, local_symesz, nlist_bfd_global); |
1154 | if (bytes != local_symesz) | |
dd707e8e | 1155 | error (_("%s: error reading symbols"), coffread_objfile->name); |
c5aa993b | 1156 | bfd_coff_swap_sym_in (symfile_bfd, temp_sym, (char *) sym); |
c906108c SS |
1157 | cs->c_naux = sym->n_numaux & 0xff; |
1158 | if (cs->c_naux >= 1) | |
1159 | { | |
3b016d57 DJ |
1160 | bytes = bfd_bread (temp_aux, local_auxesz, nlist_bfd_global); |
1161 | if (bytes != local_auxesz) | |
dd707e8e | 1162 | error (_("%s: error reading symbols"), coffread_objfile->name); |
aff410f1 MS |
1163 | bfd_coff_swap_aux_in (symfile_bfd, temp_aux, |
1164 | sym->n_type, sym->n_sclass, | |
c5aa993b JM |
1165 | 0, cs->c_naux, (char *) aux); |
1166 | /* If more than one aux entry, read past it (only the first aux | |
aff410f1 | 1167 | is important). */ |
c5aa993b | 1168 | for (i = 1; i < cs->c_naux; i++) |
3b016d57 DJ |
1169 | { |
1170 | bytes = bfd_bread (temp_aux, local_auxesz, nlist_bfd_global); | |
1171 | if (bytes != local_auxesz) | |
dd707e8e | 1172 | error (_("%s: error reading symbols"), coffread_objfile->name); |
3b016d57 | 1173 | } |
c906108c SS |
1174 | } |
1175 | cs->c_name = getsymname (sym); | |
1176 | cs->c_value = sym->n_value; | |
1177 | cs->c_sclass = (sym->n_sclass & 0xff); | |
1178 | cs->c_secnum = sym->n_scnum; | |
1179 | cs->c_type = (unsigned) sym->n_type; | |
1180 | if (!SDB_TYPE (cs->c_type)) | |
1181 | cs->c_type = 0; | |
1182 | ||
1183 | #if 0 | |
1184 | if (cs->c_sclass & 128) | |
3d263c1d | 1185 | printf (_("thumb symbol %s, class 0x%x\n"), cs->c_name, cs->c_sclass); |
c906108c SS |
1186 | #endif |
1187 | ||
1188 | symnum += 1 + cs->c_naux; | |
1189 | ||
1190 | /* The PE file format stores symbol values as offsets within the | |
1191 | section, rather than as absolute addresses. We correct that | |
1192 | here, if the symbol has an appropriate storage class. FIXME: We | |
1193 | should use BFD to read the symbols, rather than duplicating the | |
1194 | work here. */ | |
1195 | if (pe_file) | |
1196 | { | |
1197 | switch (cs->c_sclass) | |
1198 | { | |
1199 | case C_EXT: | |
1200 | case C_THUMBEXT: | |
1201 | case C_THUMBEXTFUNC: | |
1202 | case C_SECTION: | |
1203 | case C_NT_WEAK: | |
1204 | case C_STAT: | |
1205 | case C_THUMBSTAT: | |
1206 | case C_THUMBSTATFUNC: | |
1207 | case C_LABEL: | |
1208 | case C_THUMBLABEL: | |
1209 | case C_BLOCK: | |
1210 | case C_FCN: | |
1211 | case C_EFCN: | |
1212 | if (cs->c_secnum != 0) | |
1213 | cs->c_value += cs_section_address (cs, symfile_bfd); | |
1214 | break; | |
1215 | } | |
1216 | } | |
1217 | } | |
1218 | \f | |
aff410f1 | 1219 | /* Support for string table handling. */ |
c906108c SS |
1220 | |
1221 | static char *stringtab = NULL; | |
1222 | ||
1223 | static int | |
fba45db2 | 1224 | init_stringtab (bfd *abfd, long offset) |
c906108c SS |
1225 | { |
1226 | long length; | |
1227 | int val; | |
1228 | unsigned char lengthbuf[4]; | |
1229 | ||
1230 | free_stringtab (); | |
1231 | ||
1232 | /* If the file is stripped, the offset might be zero, indicating no | |
aff410f1 | 1233 | string table. Just return with `stringtab' set to null. */ |
c906108c SS |
1234 | if (offset == 0) |
1235 | return 0; | |
1236 | ||
1237 | if (bfd_seek (abfd, offset, 0) < 0) | |
1238 | return -1; | |
1239 | ||
3a42e9d0 | 1240 | val = bfd_bread ((char *) lengthbuf, sizeof lengthbuf, abfd); |
c906108c | 1241 | length = bfd_h_get_32 (symfile_bfd, lengthbuf); |
c5aa993b | 1242 | |
c906108c | 1243 | /* If no string table is needed, then the file may end immediately |
aff410f1 | 1244 | after the symbols. Just return with `stringtab' set to null. */ |
c906108c SS |
1245 | if (val != sizeof lengthbuf || length < sizeof lengthbuf) |
1246 | return 0; | |
1247 | ||
1248 | stringtab = (char *) xmalloc (length); | |
aff410f1 MS |
1249 | /* This is in target format (probably not very useful, and not |
1250 | currently used), not host format. */ | |
c906108c | 1251 | memcpy (stringtab, lengthbuf, sizeof lengthbuf); |
aff410f1 | 1252 | if (length == sizeof length) /* Empty table -- just the count. */ |
c906108c SS |
1253 | return 0; |
1254 | ||
aff410f1 MS |
1255 | val = bfd_bread (stringtab + sizeof lengthbuf, |
1256 | length - sizeof lengthbuf, abfd); | |
c906108c SS |
1257 | if (val != length - sizeof lengthbuf || stringtab[length - 1] != '\0') |
1258 | return -1; | |
1259 | ||
1260 | return 0; | |
1261 | } | |
1262 | ||
1263 | static void | |
fba45db2 | 1264 | free_stringtab (void) |
c906108c SS |
1265 | { |
1266 | if (stringtab) | |
b8c9b27d | 1267 | xfree (stringtab); |
c906108c SS |
1268 | stringtab = NULL; |
1269 | } | |
1270 | ||
74b7792f AC |
1271 | static void |
1272 | free_stringtab_cleanup (void *ignore) | |
1273 | { | |
1274 | free_stringtab (); | |
1275 | } | |
1276 | ||
c906108c | 1277 | static char * |
fba45db2 | 1278 | getsymname (struct internal_syment *symbol_entry) |
c906108c | 1279 | { |
c5aa993b | 1280 | static char buffer[SYMNMLEN + 1]; |
c906108c SS |
1281 | char *result; |
1282 | ||
1283 | if (symbol_entry->_n._n_n._n_zeroes == 0) | |
1284 | { | |
1285 | /* FIXME: Probably should be detecting corrupt symbol files by | |
c5aa993b | 1286 | seeing whether offset points to within the stringtab. */ |
c906108c SS |
1287 | result = stringtab + symbol_entry->_n._n_n._n_offset; |
1288 | } | |
1289 | else | |
1290 | { | |
1291 | strncpy (buffer, symbol_entry->_n._n_name, SYMNMLEN); | |
1292 | buffer[SYMNMLEN] = '\0'; | |
1293 | result = buffer; | |
1294 | } | |
1295 | return result; | |
1296 | } | |
1297 | ||
aff410f1 MS |
1298 | /* Extract the file name from the aux entry of a C_FILE symbol. |
1299 | Return only the last component of the name. Result is in static | |
1300 | storage and is only good for temporary use. */ | |
c906108c | 1301 | |
9f37bbcc | 1302 | static const char * |
fba45db2 | 1303 | coff_getfilename (union internal_auxent *aux_entry) |
c906108c SS |
1304 | { |
1305 | static char buffer[BUFSIZ]; | |
9f37bbcc | 1306 | const char *result; |
c906108c SS |
1307 | |
1308 | if (aux_entry->x_file.x_n.x_zeroes == 0) | |
9e91a352 MS |
1309 | { |
1310 | if (strlen (stringtab + aux_entry->x_file.x_n.x_offset) >= BUFSIZ) | |
1311 | internal_error (__FILE__, __LINE__, _("coff file name too long")); | |
1312 | strcpy (buffer, stringtab + aux_entry->x_file.x_n.x_offset); | |
1313 | } | |
c906108c SS |
1314 | else |
1315 | { | |
1316 | strncpy (buffer, aux_entry->x_file.x_fname, FILNMLEN); | |
1317 | buffer[FILNMLEN] = '\0'; | |
1318 | } | |
1319 | result = buffer; | |
1320 | ||
1321 | /* FIXME: We should not be throwing away the information about what | |
1322 | directory. It should go into dirname of the symtab, or some such | |
1323 | place. */ | |
9f37bbcc | 1324 | result = lbasename (result); |
c906108c SS |
1325 | return (result); |
1326 | } | |
1327 | \f | |
1328 | /* Support for line number handling. */ | |
1329 | ||
1330 | static char *linetab = NULL; | |
1331 | static long linetab_offset; | |
1332 | static unsigned long linetab_size; | |
1333 | ||
1334 | /* Read in all the line numbers for fast lookups later. Leave them in | |
1335 | external (unswapped) format in memory; we'll swap them as we enter | |
1336 | them into GDB's data structures. */ | |
c5aa993b | 1337 | |
c906108c | 1338 | static int |
fba45db2 | 1339 | init_lineno (bfd *abfd, long offset, int size) |
c906108c SS |
1340 | { |
1341 | int val; | |
1342 | ||
1343 | linetab_offset = offset; | |
1344 | linetab_size = size; | |
1345 | ||
c5aa993b | 1346 | free_linetab (); |
c906108c SS |
1347 | |
1348 | if (size == 0) | |
1349 | return 0; | |
1350 | ||
1351 | if (bfd_seek (abfd, offset, 0) < 0) | |
1352 | return -1; | |
c5aa993b | 1353 | |
aff410f1 | 1354 | /* Allocate the desired table, plus a sentinel. */ |
c906108c SS |
1355 | linetab = (char *) xmalloc (size + local_linesz); |
1356 | ||
3a42e9d0 | 1357 | val = bfd_bread (linetab, size, abfd); |
c906108c SS |
1358 | if (val != size) |
1359 | return -1; | |
1360 | ||
aff410f1 | 1361 | /* Terminate it with an all-zero sentinel record. */ |
c906108c SS |
1362 | memset (linetab + size, 0, local_linesz); |
1363 | ||
1364 | return 0; | |
1365 | } | |
1366 | ||
1367 | static void | |
fba45db2 | 1368 | free_linetab (void) |
c906108c SS |
1369 | { |
1370 | if (linetab) | |
b8c9b27d | 1371 | xfree (linetab); |
c906108c SS |
1372 | linetab = NULL; |
1373 | } | |
1374 | ||
74b7792f AC |
1375 | static void |
1376 | free_linetab_cleanup (void *ignore) | |
1377 | { | |
1378 | free_linetab (); | |
1379 | } | |
1380 | ||
c906108c SS |
1381 | #if !defined (L_LNNO32) |
1382 | #define L_LNNO32(lp) ((lp)->l_lnno) | |
1383 | #endif | |
1384 | ||
1385 | static void | |
aa1ee363 AC |
1386 | enter_linenos (long file_offset, int first_line, |
1387 | int last_line, struct objfile *objfile) | |
c906108c | 1388 | { |
fbf65064 | 1389 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
52f0bd74 | 1390 | char *rawptr; |
c906108c SS |
1391 | struct internal_lineno lptr; |
1392 | ||
1393 | if (!linetab) | |
c5aa993b | 1394 | return; |
c906108c SS |
1395 | if (file_offset < linetab_offset) |
1396 | { | |
23136709 | 1397 | complaint (&symfile_complaints, |
3d263c1d | 1398 | _("Line number pointer %ld lower than start of line numbers"), |
23136709 | 1399 | file_offset); |
aff410f1 | 1400 | if (file_offset > linetab_size) /* Too big to be an offset? */ |
c906108c | 1401 | return; |
aff410f1 MS |
1402 | file_offset += linetab_offset; /* Try reading at that linetab |
1403 | offset. */ | |
c906108c | 1404 | } |
c5aa993b | 1405 | |
c906108c SS |
1406 | rawptr = &linetab[file_offset - linetab_offset]; |
1407 | ||
aff410f1 | 1408 | /* Skip first line entry for each function. */ |
c906108c | 1409 | rawptr += local_linesz; |
aff410f1 | 1410 | /* Line numbers start at one for the first line of the function. */ |
c906108c SS |
1411 | first_line--; |
1412 | ||
e6a8a7d2 EZ |
1413 | /* If the line number table is full (e.g. 64K lines in COFF debug |
1414 | info), the next function's L_LNNO32 might not be zero, so don't | |
1415 | overstep the table's end in any case. */ | |
1416 | while (rawptr <= &linetab[0] + linetab_size) | |
c5aa993b JM |
1417 | { |
1418 | bfd_coff_swap_lineno_in (symfile_bfd, rawptr, &lptr); | |
1419 | rawptr += local_linesz; | |
e6a8a7d2 | 1420 | /* The next function, or the sentinel, will have L_LNNO32 zero; |
aff410f1 | 1421 | we exit. */ |
c5aa993b | 1422 | if (L_LNNO32 (&lptr) && L_LNNO32 (&lptr) <= last_line) |
fbf65064 UW |
1423 | { |
1424 | CORE_ADDR addr = lptr.l_addr.l_paddr; | |
aff410f1 MS |
1425 | addr += ANOFFSET (objfile->section_offsets, |
1426 | SECT_OFF_TEXT (objfile)); | |
1427 | record_line (current_subfile, | |
1428 | first_line + L_LNNO32 (&lptr), | |
fbf65064 UW |
1429 | gdbarch_addr_bits_remove (gdbarch, addr)); |
1430 | } | |
c5aa993b JM |
1431 | else |
1432 | break; | |
1433 | } | |
c906108c SS |
1434 | } |
1435 | \f | |
1436 | static void | |
fba45db2 | 1437 | patch_type (struct type *type, struct type *real_type) |
c906108c | 1438 | { |
52f0bd74 AC |
1439 | struct type *target = TYPE_TARGET_TYPE (type); |
1440 | struct type *real_target = TYPE_TARGET_TYPE (real_type); | |
c906108c SS |
1441 | int field_size = TYPE_NFIELDS (real_target) * sizeof (struct field); |
1442 | ||
1443 | TYPE_LENGTH (target) = TYPE_LENGTH (real_target); | |
1444 | TYPE_NFIELDS (target) = TYPE_NFIELDS (real_target); | |
aff410f1 MS |
1445 | TYPE_FIELDS (target) = (struct field *) TYPE_ALLOC (target, |
1446 | field_size); | |
c906108c | 1447 | |
aff410f1 MS |
1448 | memcpy (TYPE_FIELDS (target), |
1449 | TYPE_FIELDS (real_target), | |
1450 | field_size); | |
c906108c SS |
1451 | |
1452 | if (TYPE_NAME (real_target)) | |
1453 | { | |
0d5cff50 DE |
1454 | /* The previous copy of TYPE_NAME is allocated by |
1455 | process_coff_symbol. */ | |
c906108c | 1456 | if (TYPE_NAME (target)) |
0d5cff50 DE |
1457 | xfree ((char*) TYPE_NAME (target)); |
1458 | TYPE_NAME (target) = xstrdup (TYPE_NAME (real_target)); | |
c906108c SS |
1459 | } |
1460 | } | |
1461 | ||
1462 | /* Patch up all appropriate typedef symbols in the opaque_type_chains | |
aff410f1 MS |
1463 | so that they can be used to print out opaque data structures |
1464 | properly. */ | |
c906108c SS |
1465 | |
1466 | static void | |
fba45db2 | 1467 | patch_opaque_types (struct symtab *s) |
c906108c | 1468 | { |
52f0bd74 | 1469 | struct block *b; |
8157b174 | 1470 | struct block_iterator iter; |
52f0bd74 | 1471 | struct symbol *real_sym; |
c5aa993b | 1472 | |
aff410f1 | 1473 | /* Go through the per-file symbols only. */ |
c906108c | 1474 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK); |
de4f826b | 1475 | ALL_BLOCK_SYMBOLS (b, iter, real_sym) |
c906108c SS |
1476 | { |
1477 | /* Find completed typedefs to use to fix opaque ones. | |
c5aa993b JM |
1478 | Remove syms from the chain when their types are stored, |
1479 | but search the whole chain, as there may be several syms | |
1480 | from different files with the same name. */ | |
5aafa1cc PM |
1481 | if (SYMBOL_CLASS (real_sym) == LOC_TYPEDEF |
1482 | && SYMBOL_DOMAIN (real_sym) == VAR_DOMAIN | |
1483 | && TYPE_CODE (SYMBOL_TYPE (real_sym)) == TYPE_CODE_PTR | |
1484 | && TYPE_LENGTH (TYPE_TARGET_TYPE (SYMBOL_TYPE (real_sym))) != 0) | |
c906108c | 1485 | { |
0d5cff50 | 1486 | const char *name = SYMBOL_LINKAGE_NAME (real_sym); |
aa1ee363 AC |
1487 | int hash = hashname (name); |
1488 | struct symbol *sym, *prev; | |
c5aa993b | 1489 | |
c906108c SS |
1490 | prev = 0; |
1491 | for (sym = opaque_type_chain[hash]; sym;) | |
1492 | { | |
5aafa1cc PM |
1493 | if (name[0] == SYMBOL_LINKAGE_NAME (sym)[0] |
1494 | && strcmp (name + 1, SYMBOL_LINKAGE_NAME (sym) + 1) == 0) | |
c906108c SS |
1495 | { |
1496 | if (prev) | |
1497 | { | |
1498 | SYMBOL_VALUE_CHAIN (prev) = SYMBOL_VALUE_CHAIN (sym); | |
1499 | } | |
1500 | else | |
1501 | { | |
1502 | opaque_type_chain[hash] = SYMBOL_VALUE_CHAIN (sym); | |
1503 | } | |
c5aa993b | 1504 | |
c906108c | 1505 | patch_type (SYMBOL_TYPE (sym), SYMBOL_TYPE (real_sym)); |
c5aa993b | 1506 | |
c906108c SS |
1507 | if (prev) |
1508 | { | |
1509 | sym = SYMBOL_VALUE_CHAIN (prev); | |
1510 | } | |
1511 | else | |
1512 | { | |
1513 | sym = opaque_type_chain[hash]; | |
1514 | } | |
1515 | } | |
1516 | else | |
1517 | { | |
1518 | prev = sym; | |
1519 | sym = SYMBOL_VALUE_CHAIN (sym); | |
1520 | } | |
1521 | } | |
1522 | } | |
1523 | } | |
1524 | } | |
1525 | \f | |
768a979c UW |
1526 | static int |
1527 | coff_reg_to_regnum (struct symbol *sym, struct gdbarch *gdbarch) | |
1528 | { | |
1529 | return gdbarch_sdb_reg_to_regnum (gdbarch, SYMBOL_VALUE (sym)); | |
1530 | } | |
1531 | ||
1532 | static const struct symbol_register_ops coff_register_funcs = { | |
1533 | coff_reg_to_regnum | |
1534 | }; | |
1535 | ||
c906108c | 1536 | static struct symbol * |
aa1ee363 AC |
1537 | process_coff_symbol (struct coff_symbol *cs, |
1538 | union internal_auxent *aux, | |
fba45db2 | 1539 | struct objfile *objfile) |
c906108c | 1540 | { |
52f0bd74 | 1541 | struct symbol *sym |
c5504eaf MS |
1542 | = (struct symbol *) obstack_alloc (&objfile->objfile_obstack, |
1543 | sizeof (struct symbol)); | |
c906108c SS |
1544 | char *name; |
1545 | ||
1546 | memset (sym, 0, sizeof (struct symbol)); | |
1547 | name = cs->c_name; | |
1548 | name = EXTERNAL_NAME (name, objfile->obfd); | |
33e5013e | 1549 | SYMBOL_SET_LANGUAGE (sym, current_subfile->language); |
04a679b8 | 1550 | SYMBOL_SET_NAMES (sym, name, strlen (name), 1, objfile); |
c906108c SS |
1551 | |
1552 | /* default assumptions */ | |
1553 | SYMBOL_VALUE (sym) = cs->c_value; | |
176620f1 | 1554 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
1555 | SYMBOL_SECTION (sym) = cs_to_section (cs, objfile); |
1556 | ||
1557 | if (ISFCN (cs->c_type)) | |
1558 | { | |
aff410f1 MS |
1559 | SYMBOL_VALUE (sym) += ANOFFSET (objfile->section_offsets, |
1560 | SECT_OFF_TEXT (objfile)); | |
c5aa993b | 1561 | SYMBOL_TYPE (sym) = |
aff410f1 MS |
1562 | lookup_function_type (decode_function_type (cs, cs->c_type, |
1563 | aux, objfile)); | |
c906108c SS |
1564 | |
1565 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
1566 | if (cs->c_sclass == C_STAT || cs->c_sclass == C_THUMBSTAT | |
1567 | || cs->c_sclass == C_THUMBSTATFUNC) | |
1568 | add_symbol_to_list (sym, &file_symbols); | |
1569 | else if (cs->c_sclass == C_EXT || cs->c_sclass == C_THUMBEXT | |
1570 | || cs->c_sclass == C_THUMBEXTFUNC) | |
1571 | add_symbol_to_list (sym, &global_symbols); | |
1572 | } | |
1573 | else | |
1574 | { | |
5e2b427d | 1575 | SYMBOL_TYPE (sym) = decode_type (cs, cs->c_type, aux, objfile); |
c906108c SS |
1576 | switch (cs->c_sclass) |
1577 | { | |
c5aa993b JM |
1578 | case C_NULL: |
1579 | break; | |
c906108c | 1580 | |
c5aa993b JM |
1581 | case C_AUTO: |
1582 | SYMBOL_CLASS (sym) = LOC_LOCAL; | |
1583 | add_symbol_to_list (sym, &local_symbols); | |
1584 | break; | |
c906108c | 1585 | |
c5aa993b JM |
1586 | case C_THUMBEXT: |
1587 | case C_THUMBEXTFUNC: | |
1588 | case C_EXT: | |
1589 | SYMBOL_CLASS (sym) = LOC_STATIC; | |
1590 | SYMBOL_VALUE_ADDRESS (sym) = (CORE_ADDR) cs->c_value; | |
aff410f1 MS |
1591 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, |
1592 | SECT_OFF_TEXT (objfile)); | |
c5aa993b JM |
1593 | add_symbol_to_list (sym, &global_symbols); |
1594 | break; | |
c906108c | 1595 | |
c5aa993b JM |
1596 | case C_THUMBSTAT: |
1597 | case C_THUMBSTATFUNC: | |
1598 | case C_STAT: | |
1599 | SYMBOL_CLASS (sym) = LOC_STATIC; | |
1600 | SYMBOL_VALUE_ADDRESS (sym) = (CORE_ADDR) cs->c_value; | |
aff410f1 MS |
1601 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, |
1602 | SECT_OFF_TEXT (objfile)); | |
c5aa993b JM |
1603 | if (within_function) |
1604 | { | |
aff410f1 | 1605 | /* Static symbol of local scope. */ |
c906108c SS |
1606 | add_symbol_to_list (sym, &local_symbols); |
1607 | } | |
c5aa993b JM |
1608 | else |
1609 | { | |
aff410f1 | 1610 | /* Static symbol at top level of file. */ |
c906108c SS |
1611 | add_symbol_to_list (sym, &file_symbols); |
1612 | } | |
c5aa993b | 1613 | break; |
c906108c SS |
1614 | |
1615 | #ifdef C_GLBLREG /* AMD coff */ | |
c5aa993b | 1616 | case C_GLBLREG: |
c906108c | 1617 | #endif |
c5aa993b JM |
1618 | case C_REG: |
1619 | SYMBOL_CLASS (sym) = LOC_REGISTER; | |
768a979c UW |
1620 | SYMBOL_REGISTER_OPS (sym) = &coff_register_funcs; |
1621 | SYMBOL_VALUE (sym) = cs->c_value; | |
c5aa993b JM |
1622 | add_symbol_to_list (sym, &local_symbols); |
1623 | break; | |
c906108c | 1624 | |
c5aa993b JM |
1625 | case C_THUMBLABEL: |
1626 | case C_LABEL: | |
1627 | break; | |
c906108c | 1628 | |
c5aa993b JM |
1629 | case C_ARG: |
1630 | SYMBOL_CLASS (sym) = LOC_ARG; | |
2a2d4dc3 | 1631 | SYMBOL_IS_ARGUMENT (sym) = 1; |
c5aa993b | 1632 | add_symbol_to_list (sym, &local_symbols); |
c5aa993b | 1633 | break; |
c906108c | 1634 | |
c5aa993b | 1635 | case C_REGPARM: |
2a2d4dc3 | 1636 | SYMBOL_CLASS (sym) = LOC_REGISTER; |
768a979c | 1637 | SYMBOL_REGISTER_OPS (sym) = &coff_register_funcs; |
2a2d4dc3 | 1638 | SYMBOL_IS_ARGUMENT (sym) = 1; |
768a979c | 1639 | SYMBOL_VALUE (sym) = cs->c_value; |
c5aa993b | 1640 | add_symbol_to_list (sym, &local_symbols); |
c5aa993b | 1641 | break; |
c906108c | 1642 | |
c5aa993b JM |
1643 | case C_TPDEF: |
1644 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
176620f1 | 1645 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c5aa993b | 1646 | |
0963b4bd | 1647 | /* If type has no name, give it one. */ |
c5aa993b JM |
1648 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) |
1649 | { | |
1650 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_PTR | |
1651 | || TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_FUNC) | |
1652 | { | |
aff410f1 MS |
1653 | /* If we are giving a name to a type such as |
1654 | "pointer to foo" or "function returning foo", we | |
1655 | better not set the TYPE_NAME. If the program | |
1656 | contains "typedef char *caddr_t;", we don't want | |
1657 | all variables of type char * to print as caddr_t. | |
1658 | This is not just a consequence of GDB's type | |
1659 | management; CC and GCC (at least through version | |
1660 | 2.4) both output variables of either type char * | |
1661 | or caddr_t with the type refering to the C_TPDEF | |
1662 | symbol for caddr_t. If a future compiler cleans | |
1663 | this up it GDB is not ready for it yet, but if it | |
1664 | becomes ready we somehow need to disable this | |
1665 | check (without breaking the PCC/GCC2.4 case). | |
c5aa993b JM |
1666 | |
1667 | Sigh. | |
1668 | ||
1669 | Fortunately, this check seems not to be necessary | |
1670 | for anything except pointers or functions. */ | |
1671 | ; | |
1672 | } | |
1673 | else | |
1674 | TYPE_NAME (SYMBOL_TYPE (sym)) = | |
0d5cff50 | 1675 | xstrdup (SYMBOL_LINKAGE_NAME (sym)); |
c5aa993b | 1676 | } |
c906108c | 1677 | |
aff410f1 MS |
1678 | /* Keep track of any type which points to empty structured |
1679 | type, so it can be filled from a definition from another | |
1680 | file. A simple forward reference (TYPE_CODE_UNDEF) is | |
1681 | not an empty structured type, though; the forward | |
1682 | references work themselves out via the magic of | |
1683 | coff_lookup_type. */ | |
5aafa1cc PM |
1684 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_PTR |
1685 | && TYPE_LENGTH (TYPE_TARGET_TYPE (SYMBOL_TYPE (sym))) == 0 | |
1686 | && TYPE_CODE (TYPE_TARGET_TYPE (SYMBOL_TYPE (sym))) | |
1687 | != TYPE_CODE_UNDEF) | |
c5aa993b | 1688 | { |
3567439c | 1689 | int i = hashname (SYMBOL_LINKAGE_NAME (sym)); |
c906108c | 1690 | |
c5aa993b JM |
1691 | SYMBOL_VALUE_CHAIN (sym) = opaque_type_chain[i]; |
1692 | opaque_type_chain[i] = sym; | |
1693 | } | |
1694 | add_symbol_to_list (sym, &file_symbols); | |
1695 | break; | |
c906108c | 1696 | |
c5aa993b JM |
1697 | case C_STRTAG: |
1698 | case C_UNTAG: | |
1699 | case C_ENTAG: | |
1700 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
176620f1 | 1701 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c5aa993b JM |
1702 | |
1703 | /* Some compilers try to be helpful by inventing "fake" | |
1704 | names for anonymous enums, structures, and unions, like | |
aff410f1 | 1705 | "~0fake" or ".0fake". Thanks, but no thanks... */ |
c5aa993b | 1706 | if (TYPE_TAG_NAME (SYMBOL_TYPE (sym)) == 0) |
3567439c DJ |
1707 | if (SYMBOL_LINKAGE_NAME (sym) != NULL |
1708 | && *SYMBOL_LINKAGE_NAME (sym) != '~' | |
1709 | && *SYMBOL_LINKAGE_NAME (sym) != '.') | |
c5aa993b | 1710 | TYPE_TAG_NAME (SYMBOL_TYPE (sym)) = |
3567439c | 1711 | concat (SYMBOL_LINKAGE_NAME (sym), (char *)NULL); |
c5aa993b JM |
1712 | |
1713 | add_symbol_to_list (sym, &file_symbols); | |
1714 | break; | |
c906108c | 1715 | |
c5aa993b JM |
1716 | default: |
1717 | break; | |
c906108c SS |
1718 | } |
1719 | } | |
1720 | return sym; | |
1721 | } | |
1722 | \f | |
1723 | /* Decode a coff type specifier; return the type that is meant. */ | |
1724 | ||
1725 | static struct type * | |
aa1ee363 | 1726 | decode_type (struct coff_symbol *cs, unsigned int c_type, |
5e2b427d | 1727 | union internal_auxent *aux, struct objfile *objfile) |
c906108c | 1728 | { |
52f0bd74 | 1729 | struct type *type = 0; |
c906108c SS |
1730 | unsigned int new_c_type; |
1731 | ||
1732 | if (c_type & ~N_BTMASK) | |
1733 | { | |
1734 | new_c_type = DECREF (c_type); | |
1735 | if (ISPTR (c_type)) | |
1736 | { | |
5e2b427d | 1737 | type = decode_type (cs, new_c_type, aux, objfile); |
c906108c SS |
1738 | type = lookup_pointer_type (type); |
1739 | } | |
1740 | else if (ISFCN (c_type)) | |
1741 | { | |
5e2b427d | 1742 | type = decode_type (cs, new_c_type, aux, objfile); |
c906108c SS |
1743 | type = lookup_function_type (type); |
1744 | } | |
1745 | else if (ISARY (c_type)) | |
1746 | { | |
1747 | int i, n; | |
aa1ee363 | 1748 | unsigned short *dim; |
c906108c SS |
1749 | struct type *base_type, *index_type, *range_type; |
1750 | ||
1751 | /* Define an array type. */ | |
aff410f1 | 1752 | /* auxent refers to array, not base type. */ |
c906108c SS |
1753 | if (aux->x_sym.x_tagndx.l == 0) |
1754 | cs->c_naux = 0; | |
1755 | ||
aff410f1 | 1756 | /* Shift the indices down. */ |
c906108c SS |
1757 | dim = &aux->x_sym.x_fcnary.x_ary.x_dimen[0]; |
1758 | i = 1; | |
1759 | n = dim[0]; | |
1760 | for (i = 0; *dim && i < DIMNUM - 1; i++, dim++) | |
1761 | *dim = *(dim + 1); | |
1762 | *dim = 0; | |
1763 | ||
5e2b427d | 1764 | base_type = decode_type (cs, new_c_type, aux, objfile); |
46bf5051 | 1765 | index_type = objfile_type (objfile)->builtin_int; |
c906108c | 1766 | range_type = |
aff410f1 MS |
1767 | create_range_type ((struct type *) NULL, |
1768 | index_type, 0, n - 1); | |
c906108c | 1769 | type = |
aff410f1 MS |
1770 | create_array_type ((struct type *) NULL, |
1771 | base_type, range_type); | |
c906108c SS |
1772 | } |
1773 | return type; | |
1774 | } | |
1775 | ||
aff410f1 MS |
1776 | /* Reference to existing type. This only occurs with the struct, |
1777 | union, and enum types. EPI a29k coff fakes us out by producing | |
1778 | aux entries with a nonzero x_tagndx for definitions of structs, | |
1779 | unions, and enums, so we have to check the c_sclass field. SCO | |
1780 | 3.2v4 cc gets confused with pointers to pointers to defined | |
1781 | structs, and generates negative x_tagndx fields. */ | |
c906108c SS |
1782 | if (cs->c_naux > 0 && aux->x_sym.x_tagndx.l != 0) |
1783 | { | |
1784 | if (cs->c_sclass != C_STRTAG | |
1785 | && cs->c_sclass != C_UNTAG | |
1786 | && cs->c_sclass != C_ENTAG | |
1787 | && aux->x_sym.x_tagndx.l >= 0) | |
1788 | { | |
1789 | type = coff_alloc_type (aux->x_sym.x_tagndx.l); | |
1790 | return type; | |
1791 | } | |
1792 | else | |
1793 | { | |
23136709 | 1794 | complaint (&symfile_complaints, |
3d263c1d | 1795 | _("Symbol table entry for %s has bad tagndx value"), |
23136709 | 1796 | cs->c_name); |
aff410f1 | 1797 | /* And fall through to decode_base_type... */ |
c906108c SS |
1798 | } |
1799 | } | |
1800 | ||
5e2b427d | 1801 | return decode_base_type (cs, BTYPE (c_type), aux, objfile); |
c906108c SS |
1802 | } |
1803 | ||
1804 | /* Decode a coff type specifier for function definition; | |
1805 | return the type that the function returns. */ | |
1806 | ||
1807 | static struct type * | |
aff410f1 MS |
1808 | decode_function_type (struct coff_symbol *cs, |
1809 | unsigned int c_type, | |
1810 | union internal_auxent *aux, | |
1811 | struct objfile *objfile) | |
c906108c SS |
1812 | { |
1813 | if (aux->x_sym.x_tagndx.l == 0) | |
aff410f1 MS |
1814 | cs->c_naux = 0; /* auxent refers to function, not base |
1815 | type. */ | |
c906108c | 1816 | |
5e2b427d | 1817 | return decode_type (cs, DECREF (c_type), aux, objfile); |
c906108c SS |
1818 | } |
1819 | \f | |
aff410f1 | 1820 | /* Basic C types. */ |
c906108c SS |
1821 | |
1822 | static struct type * | |
aff410f1 MS |
1823 | decode_base_type (struct coff_symbol *cs, |
1824 | unsigned int c_type, | |
1825 | union internal_auxent *aux, | |
1826 | struct objfile *objfile) | |
c906108c | 1827 | { |
5e2b427d | 1828 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
1829 | struct type *type; |
1830 | ||
1831 | switch (c_type) | |
1832 | { | |
c5aa993b | 1833 | case T_NULL: |
aff410f1 | 1834 | /* Shows up with "void (*foo)();" structure members. */ |
46bf5051 | 1835 | return objfile_type (objfile)->builtin_void; |
c906108c | 1836 | |
c906108c | 1837 | #ifdef T_VOID |
c5aa993b JM |
1838 | case T_VOID: |
1839 | /* Intel 960 COFF has this symbol and meaning. */ | |
46bf5051 | 1840 | return objfile_type (objfile)->builtin_void; |
c906108c SS |
1841 | #endif |
1842 | ||
c5aa993b | 1843 | case T_CHAR: |
46bf5051 | 1844 | return objfile_type (objfile)->builtin_char; |
c906108c | 1845 | |
c5aa993b | 1846 | case T_SHORT: |
46bf5051 | 1847 | return objfile_type (objfile)->builtin_short; |
c906108c | 1848 | |
c5aa993b | 1849 | case T_INT: |
46bf5051 | 1850 | return objfile_type (objfile)->builtin_int; |
c906108c | 1851 | |
c5aa993b JM |
1852 | case T_LONG: |
1853 | if (cs->c_sclass == C_FIELD | |
9a76efb6 | 1854 | && aux->x_sym.x_misc.x_lnsz.x_size |
5e2b427d | 1855 | > gdbarch_long_bit (gdbarch)) |
46bf5051 | 1856 | return objfile_type (objfile)->builtin_long_long; |
c5aa993b | 1857 | else |
46bf5051 | 1858 | return objfile_type (objfile)->builtin_long; |
c906108c | 1859 | |
c5aa993b | 1860 | case T_FLOAT: |
46bf5051 | 1861 | return objfile_type (objfile)->builtin_float; |
c906108c | 1862 | |
c5aa993b | 1863 | case T_DOUBLE: |
46bf5051 | 1864 | return objfile_type (objfile)->builtin_double; |
c906108c | 1865 | |
c5aa993b | 1866 | case T_LNGDBL: |
46bf5051 | 1867 | return objfile_type (objfile)->builtin_long_double; |
c906108c | 1868 | |
c5aa993b JM |
1869 | case T_STRUCT: |
1870 | if (cs->c_naux != 1) | |
1871 | { | |
aff410f1 | 1872 | /* Anonymous structure type. */ |
c5aa993b JM |
1873 | type = coff_alloc_type (cs->c_symnum); |
1874 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
1875 | TYPE_NAME (type) = NULL; | |
aff410f1 MS |
1876 | /* This used to set the tag to "<opaque>". But I think |
1877 | setting it to NULL is right, and the printing code can | |
1878 | print it as "struct {...}". */ | |
c5aa993b JM |
1879 | TYPE_TAG_NAME (type) = NULL; |
1880 | INIT_CPLUS_SPECIFIC (type); | |
1881 | TYPE_LENGTH (type) = 0; | |
1882 | TYPE_FIELDS (type) = 0; | |
1883 | TYPE_NFIELDS (type) = 0; | |
1884 | } | |
1885 | else | |
1886 | { | |
1887 | type = coff_read_struct_type (cs->c_symnum, | |
1888 | aux->x_sym.x_misc.x_lnsz.x_size, | |
5e2b427d UW |
1889 | aux->x_sym.x_fcnary.x_fcn.x_endndx.l, |
1890 | objfile); | |
c5aa993b JM |
1891 | } |
1892 | return type; | |
c906108c | 1893 | |
c5aa993b JM |
1894 | case T_UNION: |
1895 | if (cs->c_naux != 1) | |
1896 | { | |
aff410f1 | 1897 | /* Anonymous union type. */ |
c5aa993b JM |
1898 | type = coff_alloc_type (cs->c_symnum); |
1899 | TYPE_NAME (type) = NULL; | |
aff410f1 MS |
1900 | /* This used to set the tag to "<opaque>". But I think |
1901 | setting it to NULL is right, and the printing code can | |
1902 | print it as "union {...}". */ | |
c5aa993b JM |
1903 | TYPE_TAG_NAME (type) = NULL; |
1904 | INIT_CPLUS_SPECIFIC (type); | |
1905 | TYPE_LENGTH (type) = 0; | |
1906 | TYPE_FIELDS (type) = 0; | |
1907 | TYPE_NFIELDS (type) = 0; | |
1908 | } | |
1909 | else | |
1910 | { | |
1911 | type = coff_read_struct_type (cs->c_symnum, | |
c906108c | 1912 | aux->x_sym.x_misc.x_lnsz.x_size, |
5e2b427d UW |
1913 | aux->x_sym.x_fcnary.x_fcn.x_endndx.l, |
1914 | objfile); | |
c5aa993b JM |
1915 | } |
1916 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
1917 | return type; | |
c906108c | 1918 | |
c5aa993b JM |
1919 | case T_ENUM: |
1920 | if (cs->c_naux != 1) | |
1921 | { | |
aff410f1 | 1922 | /* Anonymous enum type. */ |
c5aa993b JM |
1923 | type = coff_alloc_type (cs->c_symnum); |
1924 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
1925 | TYPE_NAME (type) = NULL; | |
aff410f1 MS |
1926 | /* This used to set the tag to "<opaque>". But I think |
1927 | setting it to NULL is right, and the printing code can | |
1928 | print it as "enum {...}". */ | |
c5aa993b JM |
1929 | TYPE_TAG_NAME (type) = NULL; |
1930 | TYPE_LENGTH (type) = 0; | |
1931 | TYPE_FIELDS (type) = 0; | |
1932 | TYPE_NFIELDS (type) = 0; | |
1933 | } | |
1934 | else | |
1935 | { | |
1936 | type = coff_read_enum_type (cs->c_symnum, | |
1937 | aux->x_sym.x_misc.x_lnsz.x_size, | |
5e2b427d UW |
1938 | aux->x_sym.x_fcnary.x_fcn.x_endndx.l, |
1939 | objfile); | |
c5aa993b JM |
1940 | } |
1941 | return type; | |
1942 | ||
1943 | case T_MOE: | |
aff410f1 | 1944 | /* Shouldn't show up here. */ |
c5aa993b | 1945 | break; |
c906108c | 1946 | |
c5aa993b | 1947 | case T_UCHAR: |
46bf5051 | 1948 | return objfile_type (objfile)->builtin_unsigned_char; |
c906108c | 1949 | |
c5aa993b | 1950 | case T_USHORT: |
46bf5051 | 1951 | return objfile_type (objfile)->builtin_unsigned_short; |
c906108c | 1952 | |
c5aa993b | 1953 | case T_UINT: |
46bf5051 | 1954 | return objfile_type (objfile)->builtin_unsigned_int; |
c906108c | 1955 | |
c5aa993b JM |
1956 | case T_ULONG: |
1957 | if (cs->c_sclass == C_FIELD | |
9a76efb6 | 1958 | && aux->x_sym.x_misc.x_lnsz.x_size |
5e2b427d | 1959 | > gdbarch_long_bit (gdbarch)) |
46bf5051 | 1960 | return objfile_type (objfile)->builtin_unsigned_long_long; |
c5aa993b | 1961 | else |
46bf5051 | 1962 | return objfile_type (objfile)->builtin_unsigned_long; |
c906108c | 1963 | } |
aff410f1 MS |
1964 | complaint (&symfile_complaints, |
1965 | _("Unexpected type for symbol %s"), cs->c_name); | |
46bf5051 | 1966 | return objfile_type (objfile)->builtin_void; |
c906108c SS |
1967 | } |
1968 | \f | |
1969 | /* This page contains subroutines of read_type. */ | |
1970 | ||
1971 | /* Read the description of a structure (or union type) and return an | |
1972 | object describing the type. */ | |
1973 | ||
1974 | static struct type * | |
5e2b427d UW |
1975 | coff_read_struct_type (int index, int length, int lastsym, |
1976 | struct objfile *objfile) | |
c906108c SS |
1977 | { |
1978 | struct nextfield | |
1979 | { | |
1980 | struct nextfield *next; | |
1981 | struct field field; | |
1982 | }; | |
1983 | ||
52f0bd74 AC |
1984 | struct type *type; |
1985 | struct nextfield *list = 0; | |
c906108c SS |
1986 | struct nextfield *new; |
1987 | int nfields = 0; | |
52f0bd74 | 1988 | int n; |
c906108c SS |
1989 | char *name; |
1990 | struct coff_symbol member_sym; | |
52f0bd74 | 1991 | struct coff_symbol *ms = &member_sym; |
c906108c SS |
1992 | struct internal_syment sub_sym; |
1993 | union internal_auxent sub_aux; | |
1994 | int done = 0; | |
1995 | ||
1996 | type = coff_alloc_type (index); | |
1997 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
c5aa993b | 1998 | INIT_CPLUS_SPECIFIC (type); |
c906108c SS |
1999 | TYPE_LENGTH (type) = length; |
2000 | ||
2001 | while (!done && symnum < lastsym && symnum < nlist_nsyms_global) | |
2002 | { | |
2003 | read_one_sym (ms, &sub_sym, &sub_aux); | |
2004 | name = ms->c_name; | |
5e2b427d | 2005 | name = EXTERNAL_NAME (name, objfile->obfd); |
c906108c SS |
2006 | |
2007 | switch (ms->c_sclass) | |
2008 | { | |
c5aa993b JM |
2009 | case C_MOS: |
2010 | case C_MOU: | |
2011 | ||
2012 | /* Get space to record the next field's data. */ | |
2013 | new = (struct nextfield *) alloca (sizeof (struct nextfield)); | |
2014 | new->next = list; | |
2015 | list = new; | |
2016 | ||
2017 | /* Save the data. */ | |
aff410f1 MS |
2018 | list->field.name = obsavestring (name, strlen (name), |
2019 | &objfile->objfile_obstack); | |
2020 | FIELD_TYPE (list->field) = decode_type (ms, ms->c_type, | |
2021 | &sub_aux, objfile); | |
d6a843b5 | 2022 | SET_FIELD_BITPOS (list->field, 8 * ms->c_value); |
c5aa993b JM |
2023 | FIELD_BITSIZE (list->field) = 0; |
2024 | nfields++; | |
2025 | break; | |
c906108c | 2026 | |
c5aa993b JM |
2027 | case C_FIELD: |
2028 | ||
2029 | /* Get space to record the next field's data. */ | |
2030 | new = (struct nextfield *) alloca (sizeof (struct nextfield)); | |
2031 | new->next = list; | |
2032 | list = new; | |
2033 | ||
2034 | /* Save the data. */ | |
aff410f1 MS |
2035 | list->field.name = obsavestring (name, strlen (name), |
2036 | &objfile->objfile_obstack); | |
2037 | FIELD_TYPE (list->field) = decode_type (ms, ms->c_type, | |
2038 | &sub_aux, objfile); | |
d6a843b5 | 2039 | SET_FIELD_BITPOS (list->field, ms->c_value); |
c5aa993b JM |
2040 | FIELD_BITSIZE (list->field) = sub_aux.x_sym.x_misc.x_lnsz.x_size; |
2041 | nfields++; | |
2042 | break; | |
c906108c | 2043 | |
c5aa993b JM |
2044 | case C_EOS: |
2045 | done = 1; | |
2046 | break; | |
c906108c SS |
2047 | } |
2048 | } | |
2049 | /* Now create the vector of fields, and record how big it is. */ | |
2050 | ||
2051 | TYPE_NFIELDS (type) = nfields; | |
2052 | TYPE_FIELDS (type) = (struct field *) | |
2053 | TYPE_ALLOC (type, sizeof (struct field) * nfields); | |
2054 | ||
2055 | /* Copy the saved-up fields into the field vector. */ | |
2056 | ||
2057 | for (n = nfields; list; list = list->next) | |
2058 | TYPE_FIELD (type, --n) = list->field; | |
2059 | ||
2060 | return type; | |
2061 | } | |
2062 | \f | |
2063 | /* Read a definition of an enumeration type, | |
2064 | and create and return a suitable type object. | |
2065 | Also defines the symbols that represent the values of the type. */ | |
2066 | ||
c906108c | 2067 | static struct type * |
5e2b427d UW |
2068 | coff_read_enum_type (int index, int length, int lastsym, |
2069 | struct objfile *objfile) | |
c906108c | 2070 | { |
5e2b427d | 2071 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
52f0bd74 AC |
2072 | struct symbol *sym; |
2073 | struct type *type; | |
c906108c SS |
2074 | int nsyms = 0; |
2075 | int done = 0; | |
2076 | struct pending **symlist; | |
2077 | struct coff_symbol member_sym; | |
52f0bd74 | 2078 | struct coff_symbol *ms = &member_sym; |
c906108c SS |
2079 | struct internal_syment sub_sym; |
2080 | union internal_auxent sub_aux; | |
2081 | struct pending *osyms, *syms; | |
2082 | int o_nsyms; | |
52f0bd74 | 2083 | int n; |
c906108c SS |
2084 | char *name; |
2085 | int unsigned_enum = 1; | |
2086 | ||
2087 | type = coff_alloc_type (index); | |
2088 | if (within_function) | |
2089 | symlist = &local_symbols; | |
2090 | else | |
2091 | symlist = &file_symbols; | |
2092 | osyms = *symlist; | |
2093 | o_nsyms = osyms ? osyms->nsyms : 0; | |
2094 | ||
2095 | while (!done && symnum < lastsym && symnum < nlist_nsyms_global) | |
2096 | { | |
2097 | read_one_sym (ms, &sub_sym, &sub_aux); | |
2098 | name = ms->c_name; | |
5e2b427d | 2099 | name = EXTERNAL_NAME (name, objfile->obfd); |
c906108c SS |
2100 | |
2101 | switch (ms->c_sclass) | |
2102 | { | |
c5aa993b JM |
2103 | case C_MOE: |
2104 | sym = (struct symbol *) obstack_alloc | |
5e2b427d | 2105 | (&objfile->objfile_obstack, sizeof (struct symbol)); |
c5aa993b JM |
2106 | memset (sym, 0, sizeof (struct symbol)); |
2107 | ||
3567439c DJ |
2108 | SYMBOL_SET_LINKAGE_NAME (sym, |
2109 | obsavestring (name, strlen (name), | |
2110 | &objfile->objfile_obstack)); | |
c5aa993b | 2111 | SYMBOL_CLASS (sym) = LOC_CONST; |
176620f1 | 2112 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c5aa993b JM |
2113 | SYMBOL_VALUE (sym) = ms->c_value; |
2114 | add_symbol_to_list (sym, symlist); | |
2115 | nsyms++; | |
2116 | break; | |
c906108c | 2117 | |
c5aa993b JM |
2118 | case C_EOS: |
2119 | /* Sometimes the linker (on 386/ix 2.0.2 at least) screws | |
2120 | up the count of how many symbols to read. So stop | |
2121 | on .eos. */ | |
2122 | done = 1; | |
2123 | break; | |
c906108c SS |
2124 | } |
2125 | } | |
2126 | ||
2127 | /* Now fill in the fields of the type-structure. */ | |
2128 | ||
2129 | if (length > 0) | |
2130 | TYPE_LENGTH (type) = length; | |
9a76efb6 | 2131 | else /* Assume ints. */ |
5e2b427d | 2132 | TYPE_LENGTH (type) = gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT; |
c906108c SS |
2133 | TYPE_CODE (type) = TYPE_CODE_ENUM; |
2134 | TYPE_NFIELDS (type) = nsyms; | |
2135 | TYPE_FIELDS (type) = (struct field *) | |
2136 | TYPE_ALLOC (type, sizeof (struct field) * nsyms); | |
2137 | ||
2138 | /* Find the symbols for the values and put them into the type. | |
2139 | The symbols can be found in the symlist that we put them on | |
2140 | to cause them to be defined. osyms contains the old value | |
2141 | of that symlist; everything up to there was defined by us. */ | |
2142 | /* Note that we preserve the order of the enum constants, so | |
2143 | that in something like "enum {FOO, LAST_THING=FOO}" we print | |
2144 | FOO, not LAST_THING. */ | |
2145 | ||
2146 | for (syms = *symlist, n = 0; syms; syms = syms->next) | |
2147 | { | |
2148 | int j = 0; | |
2149 | ||
2150 | if (syms == osyms) | |
2151 | j = o_nsyms; | |
c5aa993b | 2152 | for (; j < syms->nsyms; j++, n++) |
c906108c SS |
2153 | { |
2154 | struct symbol *xsym = syms->symbol[j]; | |
c5504eaf | 2155 | |
c906108c | 2156 | SYMBOL_TYPE (xsym) = type; |
3567439c | 2157 | TYPE_FIELD_NAME (type, n) = SYMBOL_LINKAGE_NAME (xsym); |
14e75d8e | 2158 | SET_FIELD_ENUMVAL (TYPE_FIELD (type, n), SYMBOL_VALUE (xsym)); |
c906108c SS |
2159 | if (SYMBOL_VALUE (xsym) < 0) |
2160 | unsigned_enum = 0; | |
2161 | TYPE_FIELD_BITSIZE (type, n) = 0; | |
2162 | } | |
2163 | if (syms == osyms) | |
2164 | break; | |
2165 | } | |
2166 | ||
2167 | if (unsigned_enum) | |
876cecd0 | 2168 | TYPE_UNSIGNED (type) = 1; |
c906108c SS |
2169 | |
2170 | return type; | |
2171 | } | |
2172 | ||
aff410f1 | 2173 | /* Register our ability to parse symbols for coff BFD files. */ |
c906108c | 2174 | |
00b5771c | 2175 | static const struct sym_fns coff_sym_fns = |
c906108c SS |
2176 | { |
2177 | bfd_target_coff_flavour, | |
aff410f1 MS |
2178 | coff_new_init, /* sym_new_init: init anything gbl to |
2179 | entire symtab */ | |
2180 | coff_symfile_init, /* sym_init: read initial info, setup | |
2181 | for sym_read() */ | |
2182 | coff_symfile_read, /* sym_read: read a symbol file into | |
2183 | symtab */ | |
b11896a5 | 2184 | NULL, /* sym_read_psymbols */ |
aff410f1 MS |
2185 | coff_symfile_finish, /* sym_finish: finished with file, |
2186 | cleanup */ | |
2187 | default_symfile_offsets, /* sym_offsets: xlate external to | |
2188 | internal form */ | |
2189 | default_symfile_segments, /* sym_segments: Get segment | |
2190 | information from a file */ | |
c295b2e5 | 2191 | NULL, /* sym_read_linetable */ |
aff410f1 MS |
2192 | |
2193 | default_symfile_relocate, /* sym_relocate: Relocate a debug | |
2194 | section. */ | |
55aa24fb | 2195 | NULL, /* sym_probe_fns */ |
00b5771c | 2196 | &psym_functions |
c906108c SS |
2197 | }; |
2198 | ||
b8b98ad1 TT |
2199 | /* Free the per-objfile COFF data. */ |
2200 | ||
2201 | static void | |
2202 | coff_free_info (struct objfile *objfile, void *arg) | |
2203 | { | |
2204 | xfree (arg); | |
2205 | } | |
2206 | ||
c906108c | 2207 | void |
fba45db2 | 2208 | _initialize_coffread (void) |
c906108c SS |
2209 | { |
2210 | add_symtab_fns (&coff_sym_fns); | |
b8b98ad1 TT |
2211 | |
2212 | coff_objfile_data_key = register_objfile_data_with_cleanup (NULL, | |
2213 | coff_free_info); | |
c906108c | 2214 | } |