File: | src/gnu/usr.bin/binutils/gdb/coffread.c |
Warning: | line 1722, column 4 Value stored to 'i' is never read |
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1 | /* Read coff symbol tables and convert to internal format, for GDB. |
2 | Copyright 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, |
3 | 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004 |
4 | Free Software Foundation, Inc. |
5 | Contributed by David D. Johnson, Brown University (ddj@cs.brown.edu). |
6 | |
7 | This file is part of GDB. |
8 | |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by |
11 | the Free Software Foundation; either version 2 of the License, or |
12 | (at your option) any later version. |
13 | |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
17 | GNU General Public License for more details. |
18 | |
19 | You should have received a copy of the GNU General Public License |
20 | along with this program; if not, write to the Free Software |
21 | Foundation, Inc., 59 Temple Place - Suite 330, |
22 | Boston, MA 02111-1307, USA. */ |
23 | |
24 | #include "defs.h" |
25 | #include "symtab.h" |
26 | #include "gdbtypes.h" |
27 | #include "demangle.h" |
28 | #include "breakpoint.h" |
29 | |
30 | #include "bfd.h" |
31 | #include "gdb_obstack.h" |
32 | |
33 | #include "gdb_string.h" |
34 | #include <ctype.h> |
35 | |
36 | #include "coff/internal.h" /* Internal format of COFF symbols in BFD */ |
37 | #include "libcoff.h" /* FIXME secret internal data from BFD */ |
38 | #include "objfiles.h" |
39 | #include "buildsym.h" |
40 | #include "gdb-stabs.h" |
41 | #include "stabsread.h" |
42 | #include "complaints.h" |
43 | #include "target.h" |
44 | #include "gdb_assert.h" |
45 | #include "block.h" |
46 | #include "dictionary.h" |
47 | |
48 | #include "coff-pe-read.h" |
49 | |
50 | extern void _initialize_coffread (void); |
51 | |
52 | struct coff_symfile_info |
53 | { |
54 | file_ptr min_lineno_offset; /* Where in file lowest line#s are */ |
55 | file_ptr max_lineno_offset; /* 1+last byte of line#s in file */ |
56 | |
57 | CORE_ADDR textaddr; /* Addr of .text section. */ |
58 | unsigned int textsize; /* Size of .text section. */ |
59 | struct stab_section_list *stabsects; /* .stab sections. */ |
60 | asection *stabstrsect; /* Section pointer for .stab section */ |
61 | char *stabstrdata; |
62 | }; |
63 | |
64 | /* Translate an external name string into a user-visible name. */ |
65 | #define EXTERNAL_NAME(string, abfd)(string[0] == ((abfd)->xvec->symbol_leading_char)? string +1: string) \ |
66 | (string[0] == bfd_get_symbol_leading_char(abfd)((abfd)->xvec->symbol_leading_char)? string+1: string) |
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)(((type) & local_n_btmask) | (type & local_n_tmask)) (BTYPE(type)((type) & local_n_btmask) | (type & N_TMASKlocal_n_tmask)) |
74 | |
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 | |
87 | |
88 | /* Pointers to scratch storage, used for reading raw symbols and auxents. */ |
89 | |
90 | static char *temp_sym; |
91 | static char *temp_aux; |
92 | |
93 | /* Local variables that hold the shift and mask values for the |
94 | COFF file that we are currently reading. These come back to us |
95 | from BFD, and are referenced by their macro names, as well as |
96 | internally to the BTYPE, ISPTR, ISFCN, ISARY, ISTAG, and DECREF |
97 | macros from include/coff/internal.h . */ |
98 | |
99 | static unsigned local_n_btmask; |
100 | static unsigned local_n_btshft; |
101 | static unsigned local_n_tmask; |
102 | static unsigned local_n_tshift; |
103 | |
104 | #define N_BTMASKlocal_n_btmask local_n_btmask |
105 | #define N_BTSHFTlocal_n_btshft local_n_btshft |
106 | #define N_TMASKlocal_n_tmask local_n_tmask |
107 | #define N_TSHIFTlocal_n_tshift local_n_tshift |
108 | |
109 | /* Local variables that hold the sizes in the file of various COFF structures. |
110 | (We only need to know this to read them from the file -- BFD will then |
111 | translate the data in them, into `internal_xxx' structs in the right |
112 | byte order, alignment, etc.) */ |
113 | |
114 | static unsigned local_linesz; |
115 | static unsigned local_symesz; |
116 | static unsigned local_auxesz; |
117 | |
118 | /* This is set if this is a PE format file. */ |
119 | |
120 | static int pe_file; |
121 | |
122 | /* Chain of typedefs of pointers to empty struct/union types. |
123 | They are chained thru the SYMBOL_VALUE_CHAIN. */ |
124 | |
125 | static struct symbol *opaque_type_chain[HASHSIZE127]; |
126 | |
127 | /* Simplified internal version of coff symbol table information */ |
128 | |
129 | struct coff_symbol |
130 | { |
131 | char *c_name; |
132 | int c_symnum; /* symbol number of this entry */ |
133 | int c_naux; /* 0 if syment only, 1 if syment + auxent, etc */ |
134 | long c_value; |
135 | int c_sclass; |
136 | int c_secnum; |
137 | unsigned int c_type; |
138 | }; |
139 | |
140 | extern void stabsread_clear_cache (void); |
141 | |
142 | static struct type *coff_read_struct_type (int, int, int); |
143 | |
144 | static struct type *decode_base_type (struct coff_symbol *, |
145 | unsigned int, union internal_auxent *); |
146 | |
147 | static struct type *decode_type (struct coff_symbol *, unsigned int, |
148 | union internal_auxent *); |
149 | |
150 | static struct type *decode_function_type (struct coff_symbol *, |
151 | unsigned int, |
152 | union internal_auxent *); |
153 | |
154 | static struct type *coff_read_enum_type (int, int, int); |
155 | |
156 | static struct symbol *process_coff_symbol (struct coff_symbol *, |
157 | union internal_auxent *, |
158 | struct objfile *); |
159 | |
160 | static void patch_opaque_types (struct symtab *); |
161 | |
162 | static void enter_linenos (long, int, int, struct objfile *); |
163 | |
164 | static void free_linetab (void); |
165 | |
166 | static void free_linetab_cleanup (void *ignore); |
167 | |
168 | static int init_lineno (bfd *, long, int); |
169 | |
170 | static char *getsymname (struct internal_syment *); |
171 | |
172 | static char *coff_getfilename (union internal_auxent *); |
173 | |
174 | static void free_stringtab (void); |
175 | |
176 | static void free_stringtab_cleanup (void *ignore); |
177 | |
178 | static int init_stringtab (bfd *, long); |
179 | |
180 | static void read_one_sym (struct coff_symbol *, |
181 | struct internal_syment *, union internal_auxent *); |
182 | |
183 | static void coff_symtab_read (long, unsigned int, struct objfile *); |
184 | |
185 | /* We are called once per section from coff_symfile_read. We |
186 | need to examine each section we are passed, check to see |
187 | if it is something we are interested in processing, and |
188 | if so, stash away some access information for the section. |
189 | |
190 | FIXME: The section names should not be hardwired strings (what |
191 | should they be? I don't think most object file formats have enough |
192 | section flags to specify what kind of debug section it is |
193 | -kingdon). */ |
194 | |
195 | static void |
196 | coff_locate_sections (bfd *abfd, asection *sectp, void *csip) |
197 | { |
198 | struct coff_symfile_info *csi; |
199 | const char *name; |
200 | |
201 | csi = (struct coff_symfile_info *) csip; |
202 | name = bfd_get_section_name (abfd, sectp)((sectp)->name + 0); |
203 | if (DEPRECATED_STREQ (name, ".text")(strcmp ((name), (".text")) == 0)) |
204 | { |
205 | csi->textaddr = bfd_section_vma (abfd, sectp)((sectp)->vma); |
206 | csi->textsize += bfd_section_size (abfd, sectp)((sectp)->_raw_size); |
207 | } |
208 | else if (strncmp (name, ".text", sizeof ".text" - 1) == 0) |
209 | { |
210 | csi->textsize += bfd_section_size (abfd, sectp)((sectp)->_raw_size); |
211 | } |
212 | else if (DEPRECATED_STREQ (name, ".stabstr")(strcmp ((name), (".stabstr")) == 0)) |
213 | { |
214 | csi->stabstrsect = sectp; |
215 | } |
216 | else if (strncmp (name, ".stab", sizeof ".stab" - 1) == 0) |
217 | { |
218 | const char *s; |
219 | |
220 | /* We can have multiple .stab sections if linked with |
221 | --split-by-reloc. */ |
222 | for (s = name + sizeof ".stab" - 1; *s != '\0'; s++) |
223 | if (!isdigit (*s)) |
224 | break; |
225 | if (*s == '\0') |
226 | { |
227 | struct stab_section_list *n, **pn; |
228 | |
229 | n = ((struct stab_section_list *) |
230 | xmalloc (sizeof (struct stab_section_list))); |
231 | n->section = sectp; |
232 | n->next = NULL((void*)0); |
233 | for (pn = &csi->stabsects; *pn != NULL((void*)0); pn = &(*pn)->next) |
234 | ; |
235 | *pn = n; |
236 | |
237 | /* This will be run after coffstab_build_psymtabs is called |
238 | in coff_symfile_read, at which point we no longer need |
239 | the information. */ |
240 | make_cleanup (xfree, n); |
241 | } |
242 | } |
243 | } |
244 | |
245 | /* Return the section_offsets* that CS points to. */ |
246 | static int cs_to_section (struct coff_symbol *, struct objfile *); |
247 | |
248 | struct find_targ_sec_arg |
249 | { |
250 | int targ_index; |
251 | asection **resultp; |
252 | }; |
253 | |
254 | static void |
255 | find_targ_sec (bfd *abfd, asection *sect, void *obj) |
256 | { |
257 | struct find_targ_sec_arg *args = (struct find_targ_sec_arg *) obj; |
258 | if (sect->target_index == args->targ_index) |
259 | *args->resultp = sect; |
260 | } |
261 | |
262 | /* Return the section number (SECT_OFF_*) that CS points to. */ |
263 | static int |
264 | cs_to_section (struct coff_symbol *cs, struct objfile *objfile) |
265 | { |
266 | asection *sect = NULL((void*)0); |
267 | struct find_targ_sec_arg args; |
268 | int off = SECT_OFF_TEXT (objfile)((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/coffread.c" , 268, "sect_index_text not initialized"), -1) : objfile-> sect_index_text); |
269 | |
270 | args.targ_index = cs->c_secnum; |
271 | args.resultp = § |
272 | bfd_map_over_sections (objfile->obfd, find_targ_sec, &args); |
273 | if (sect != NULL((void*)0)) |
274 | { |
275 | /* This is the section. Figure out what SECT_OFF_* code it is. */ |
276 | if (bfd_get_section_flags (abfd, sect)((sect)->flags + 0) & SEC_CODE0x020) |
277 | off = SECT_OFF_TEXT (objfile)((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/coffread.c" , 277, "sect_index_text not initialized"), -1) : objfile-> sect_index_text); |
278 | else if (bfd_get_section_flags (abfd, sect)((sect)->flags + 0) & SEC_LOAD0x002) |
279 | off = SECT_OFF_DATA (objfile)((objfile->sect_index_data == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/coffread.c" , 279, "sect_index_data not initialized"), -1) : objfile-> sect_index_data); |
280 | else |
281 | /* Just return the bfd section index. */ |
282 | off = sect->index; |
283 | } |
284 | return off; |
285 | } |
286 | |
287 | /* Return the address of the section of a COFF symbol. */ |
288 | |
289 | static CORE_ADDR cs_section_address (struct coff_symbol *, bfd *); |
290 | |
291 | static CORE_ADDR |
292 | cs_section_address (struct coff_symbol *cs, bfd *abfd) |
293 | { |
294 | asection *sect = NULL((void*)0); |
295 | struct find_targ_sec_arg args; |
296 | CORE_ADDR addr = 0; |
297 | |
298 | args.targ_index = cs->c_secnum; |
299 | args.resultp = § |
300 | bfd_map_over_sections (abfd, find_targ_sec, &args); |
301 | if (sect != NULL((void*)0)) |
302 | addr = bfd_get_section_vma (objfile->obfd, sect)((sect)->vma + 0); |
303 | return addr; |
304 | } |
305 | |
306 | /* Look up a coff type-number index. Return the address of the slot |
307 | where the type for that index is stored. |
308 | The type-number is in INDEX. |
309 | |
310 | This can be used for finding the type associated with that index |
311 | or for associating a new type with the index. */ |
312 | |
313 | static struct type ** |
314 | coff_lookup_type (int index) |
315 | { |
316 | if (index >= type_vector_length) |
317 | { |
318 | int old_vector_length = type_vector_length; |
319 | |
320 | type_vector_length *= 2; |
321 | if (index /* is still */ >= type_vector_length) |
322 | type_vector_length = index * 2; |
323 | |
324 | type_vector = (struct type **) |
325 | xrealloc ((char *) type_vector, |
326 | type_vector_length * sizeof (struct type *)); |
327 | memset (&type_vector[old_vector_length], 0, |
328 | (type_vector_length - old_vector_length) * sizeof (struct type *)); |
329 | } |
330 | return &type_vector[index]; |
331 | } |
332 | |
333 | /* Make sure there is a type allocated for type number index |
334 | and return the type object. |
335 | This can create an empty (zeroed) type object. */ |
336 | |
337 | static struct type * |
338 | coff_alloc_type (int index) |
339 | { |
340 | struct type **type_addr = coff_lookup_type (index); |
341 | struct type *type = *type_addr; |
342 | |
343 | /* If we are referring to a type not known at all yet, |
344 | allocate an empty type for it. |
345 | We will fill it in later if we find out how. */ |
346 | if (type == NULL((void*)0)) |
347 | { |
348 | type = alloc_type (current_objfile); |
349 | *type_addr = type; |
350 | } |
351 | return type; |
352 | } |
353 | |
354 | /* Start a new symtab for a new source file. |
355 | This is called when a COFF ".file" symbol is seen; |
356 | it indicates the start of data for one original source file. */ |
357 | |
358 | static void |
359 | coff_start_symtab (char *name) |
360 | { |
361 | start_symtab ( |
362 | /* We fill in the filename later. start_symtab puts |
363 | this pointer into last_source_file and we put it in |
364 | subfiles->name, which end_symtab frees; that's why |
365 | it must be malloc'd. */ |
366 | savestring (name, strlen (name)), |
367 | /* We never know the directory name for COFF. */ |
368 | NULL((void*)0), |
369 | /* The start address is irrelevant, since we set |
370 | last_source_start_addr in coff_end_symtab. */ |
371 | 0); |
372 | record_debugformat ("COFF"); |
373 | } |
374 | |
375 | /* Save the vital information from when starting to read a file, |
376 | for use when closing off the current file. |
377 | NAME is the file name the symbols came from, START_ADDR is the first |
378 | text address for the file, and SIZE is the number of bytes of text. */ |
379 | |
380 | static void |
381 | complete_symtab (char *name, CORE_ADDR start_addr, unsigned int size) |
382 | { |
383 | if (last_source_file != NULL((void*)0)) |
384 | xfree (last_source_file); |
385 | last_source_file = savestring (name, strlen (name)); |
386 | current_source_start_addr = start_addr; |
387 | current_source_end_addr = start_addr + size; |
388 | } |
389 | |
390 | /* Finish the symbol definitions for one main source file, |
391 | close off all the lexical contexts for that file |
392 | (creating struct block's for them), then make the |
393 | struct symtab for that file and put it in the list of all such. */ |
394 | |
395 | static void |
396 | coff_end_symtab (struct objfile *objfile) |
397 | { |
398 | struct symtab *symtab; |
399 | |
400 | last_source_start_addr = current_source_start_addr; |
401 | |
402 | symtab = end_symtab (current_source_end_addr, objfile, SECT_OFF_TEXT (objfile)((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/coffread.c" , 402, "sect_index_text not initialized"), -1) : objfile-> sect_index_text)); |
403 | |
404 | if (symtab != NULL((void*)0)) |
405 | free_named_symtabs (symtab->filename); |
406 | |
407 | /* Reinitialize for beginning of new file. */ |
408 | last_source_file = NULL((void*)0); |
409 | } |
410 | |
411 | static void |
412 | record_minimal_symbol (char *name, CORE_ADDR address, |
413 | enum minimal_symbol_type type, struct objfile *objfile) |
414 | { |
415 | /* We don't want TDESC entry points in the minimal symbol table */ |
416 | if (name[0] == '@') |
417 | return; |
418 | |
419 | prim_record_minimal_symbol (name, address, type, objfile); |
420 | } |
421 | |
422 | /* coff_symfile_init () |
423 | is the coff-specific initialization routine for reading symbols. |
424 | It is passed a struct objfile which contains, among other things, |
425 | the BFD for the file whose symbols are being read, and a slot for |
426 | a pointer to "private data" which we fill with cookies and other |
427 | treats for coff_symfile_read (). |
428 | |
429 | We will only be called if this is a COFF or COFF-like file. |
430 | BFD handles figuring out the format of the file, and code in symtab.c |
431 | uses BFD's determination to vector to us. |
432 | |
433 | The ultimate result is a new symtab (or, FIXME, eventually a psymtab). */ |
434 | |
435 | static void |
436 | coff_symfile_init (struct objfile *objfile) |
437 | { |
438 | /* Allocate struct to keep track of stab reading. */ |
439 | objfile->sym_stab_info = (struct dbx_symfile_info *) |
440 | xmalloc (sizeof (struct dbx_symfile_info)); |
441 | |
442 | memset (objfile->sym_stab_info, 0, |
443 | sizeof (struct dbx_symfile_info)); |
444 | |
445 | /* Allocate struct to keep track of the symfile */ |
446 | objfile->sym_private = xmalloc (sizeof (struct coff_symfile_info)); |
447 | |
448 | memset (objfile->sym_private, 0, sizeof (struct coff_symfile_info)); |
449 | |
450 | /* COFF objects may be reordered, so set OBJF_REORDERED. If we |
451 | find this causes a significant slowdown in gdb then we could |
452 | set it in the debug symbol readers only when necessary. */ |
453 | objfile->flags |= OBJF_REORDERED(1 << 2); |
454 | |
455 | init_entry_point_info (objfile); |
456 | } |
457 | |
458 | /* This function is called for every section; it finds the outer limits |
459 | of the line table (minimum and maximum file offset) so that the |
460 | mainline code can read the whole thing for efficiency. */ |
461 | |
462 | static void |
463 | find_linenos (bfd *abfd, struct bfd_section *asect, void *vpinfo) |
464 | { |
465 | struct coff_symfile_info *info; |
466 | int size, count; |
467 | file_ptr offset, maxoff; |
468 | |
469 | /* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */ |
470 | count = asect->lineno_count; |
471 | /* End of warning */ |
472 | |
473 | if (count == 0) |
474 | return; |
475 | size = count * local_linesz; |
476 | |
477 | info = (struct coff_symfile_info *) vpinfo; |
478 | /* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */ |
479 | offset = asect->line_filepos; |
480 | /* End of warning */ |
481 | |
482 | if (offset < info->min_lineno_offset || info->min_lineno_offset == 0) |
483 | info->min_lineno_offset = offset; |
484 | |
485 | maxoff = offset + size; |
486 | if (maxoff > info->max_lineno_offset) |
487 | info->max_lineno_offset = maxoff; |
488 | } |
489 | |
490 | |
491 | /* The BFD for this file -- only good while we're actively reading |
492 | symbols into a psymtab or a symtab. */ |
493 | |
494 | static bfd *symfile_bfd; |
495 | |
496 | /* Read a symbol file, after initialization by coff_symfile_init. */ |
497 | |
498 | static void |
499 | coff_symfile_read (struct objfile *objfile, int mainline) |
500 | { |
501 | struct coff_symfile_info *info; |
502 | struct dbx_symfile_info *dbxinfo; |
503 | bfd *abfd = objfile->obfd; |
504 | coff_data_type *cdata = coff_data (abfd)((abfd)->tdata.coff_obj_data); |
505 | char *name = bfd_get_filename (abfd)((char *) (abfd)->filename); |
506 | int val; |
507 | unsigned int num_symbols; |
508 | int symtab_offset; |
509 | int stringtab_offset; |
510 | struct cleanup *back_to, *cleanup_minimal_symbols; |
511 | int stabstrsize; |
512 | int len; |
513 | char * target; |
514 | |
515 | info = (struct coff_symfile_info *) objfile->sym_private; |
516 | dbxinfo = objfile->sym_stab_info; |
517 | symfile_bfd = abfd; /* Kludge for swap routines */ |
518 | |
519 | /* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */ |
520 | num_symbols = bfd_get_symcount (abfd)((abfd)->symcount); /* How many syms */ |
521 | symtab_offset = cdata->sym_filepos; /* Symbol table file offset */ |
522 | stringtab_offset = symtab_offset + /* String table file offset */ |
523 | num_symbols * cdata->local_symesz; |
524 | |
525 | /* Set a few file-statics that give us specific information about |
526 | the particular COFF file format we're reading. */ |
527 | local_n_btmask = cdata->local_n_btmask; |
528 | local_n_btshft = cdata->local_n_btshft; |
529 | local_n_tmask = cdata->local_n_tmask; |
530 | local_n_tshift = cdata->local_n_tshift; |
531 | local_linesz = cdata->local_linesz; |
532 | local_symesz = cdata->local_symesz; |
533 | local_auxesz = cdata->local_auxesz; |
534 | |
535 | /* Allocate space for raw symbol and aux entries, based on their |
536 | space requirements as reported by BFD. */ |
537 | temp_sym = (char *) xmalloc |
538 | (cdata->local_symesz + cdata->local_auxesz); |
539 | temp_aux = temp_sym + cdata->local_symesz; |
540 | back_to = make_cleanup (free_current_contents, &temp_sym); |
541 | |
542 | /* We need to know whether this is a PE file, because in PE files, |
543 | unlike standard COFF files, symbol values are stored as offsets |
544 | from the section address, rather than as absolute addresses. |
545 | FIXME: We should use BFD to read the symbol table, and thus avoid |
546 | this problem. */ |
547 | pe_file = |
548 | strncmp (bfd_get_target (objfile->obfd)((objfile->obfd)->xvec->name), "pe", 2) == 0 |
549 | || strncmp (bfd_get_target (objfile->obfd)((objfile->obfd)->xvec->name), "epoc-pe", 7) == 0; |
550 | |
551 | /* End of warning */ |
552 | |
553 | info->min_lineno_offset = 0; |
554 | info->max_lineno_offset = 0; |
555 | |
556 | /* Only read line number information if we have symbols. |
557 | |
558 | On Windows NT, some of the system's DLL's have sections with |
559 | PointerToLinenumbers fields that are non-zero, but point at |
560 | random places within the image file. (In the case I found, |
561 | KERNEL32.DLL's .text section has a line number info pointer that |
562 | points into the middle of the string `lib\\i386\kernel32.dll'.) |
563 | |
564 | However, these DLL's also have no symbols. The line number |
565 | tables are meaningless without symbols. And in fact, GDB never |
566 | uses the line number information unless there are symbols. So we |
567 | can avoid spurious error messages (and maybe run a little |
568 | faster!) by not even reading the line number table unless we have |
569 | symbols. */ |
570 | if (num_symbols > 0) |
571 | { |
572 | /* Read the line number table, all at once. */ |
573 | bfd_map_over_sections (abfd, find_linenos, (void *) info); |
574 | |
575 | make_cleanup (free_linetab_cleanup, 0 /*ignore*/); |
576 | val = init_lineno (abfd, info->min_lineno_offset, |
577 | info->max_lineno_offset - info->min_lineno_offset); |
578 | if (val < 0) |
579 | error ("\"%s\": error reading line numbers\n", name); |
580 | } |
581 | |
582 | /* Now read the string table, all at once. */ |
583 | |
584 | make_cleanup (free_stringtab_cleanup, 0 /*ignore*/); |
585 | val = init_stringtab (abfd, stringtab_offset); |
586 | if (val < 0) |
587 | error ("\"%s\": can't get string table", name); |
588 | |
589 | init_minimal_symbol_collection (); |
590 | cleanup_minimal_symbols = make_cleanup_discard_minimal_symbols (); |
591 | |
592 | /* Now that the executable file is positioned at symbol table, |
593 | process it and define symbols accordingly. */ |
594 | |
595 | coff_symtab_read ((long) symtab_offset, num_symbols, objfile); |
596 | |
597 | /* Install any minimal symbols that have been collected as the current |
598 | minimal symbols for this objfile. */ |
599 | |
600 | install_minimal_symbols (objfile); |
601 | |
602 | /* Free the installed minimal symbol data. */ |
603 | do_cleanups (cleanup_minimal_symbols); |
604 | |
605 | /* If we are reinitializing, or if we have not loaded syms yet, |
606 | empty the psymtab. "mainline" is cleared so the *_read_psymtab |
607 | functions do not all re-initialize it. */ |
608 | if (mainline) |
609 | { |
610 | init_psymbol_list (objfile, 0); |
611 | mainline = 0; |
612 | } |
613 | |
614 | bfd_map_over_sections (abfd, coff_locate_sections, (void *) info); |
615 | |
616 | if (info->stabsects) |
617 | { |
618 | if (!info->stabstrsect) |
619 | { |
620 | error (("The debugging information in `%s' is corrupted.\n" |
621 | "The file has a `.stabs' section, but no `.stabstr' " |
622 | "section."), |
623 | name); |
624 | } |
625 | |
626 | /* FIXME: dubious. Why can't we use something normal like |
627 | bfd_get_section_contents? */ |
628 | bfd_seek (abfd, abfd->where, 0); |
629 | |
630 | stabstrsize = bfd_section_size (abfd, info->stabstrsect)((info->stabstrsect)->_raw_size); |
631 | |
632 | coffstab_build_psymtabs (objfile, |
633 | mainline, |
634 | info->textaddr, info->textsize, |
635 | info->stabsects, |
636 | info->stabstrsect->filepos, stabstrsize); |
637 | } |
638 | if (dwarf2_has_info (objfile)) |
639 | { |
640 | /* DWARF2 sections. */ |
641 | dwarf2_build_psymtabs (objfile, mainline); |
642 | } |
643 | |
644 | dwarf2_build_frame_info (objfile); |
645 | |
646 | do_cleanups (back_to); |
647 | } |
648 | |
649 | static void |
650 | coff_new_init (struct objfile *ignore) |
651 | { |
652 | } |
653 | |
654 | /* Perform any local cleanups required when we are done with a particular |
655 | objfile. I.E, we are in the process of discarding all symbol information |
656 | for an objfile, freeing up all memory held for it, and unlinking the |
657 | objfile struct from the global list of known objfiles. */ |
658 | |
659 | static void |
660 | coff_symfile_finish (struct objfile *objfile) |
661 | { |
662 | if (objfile->sym_private != NULL((void*)0)) |
663 | { |
664 | xfree (objfile->sym_private); |
665 | } |
666 | |
667 | /* Let stabs reader clean up */ |
668 | stabsread_clear_cache (); |
669 | } |
670 | |
671 | |
672 | /* Given pointers to a symbol table in coff style exec file, |
673 | analyze them and create struct symtab's describing the symbols. |
674 | NSYMS is the number of symbols in the symbol table. |
675 | We read them one at a time using read_one_sym (). */ |
676 | |
677 | static void |
678 | coff_symtab_read (long symtab_offset, unsigned int nsyms, |
679 | struct objfile *objfile) |
680 | { |
681 | struct context_stack *new; |
682 | struct coff_symbol coff_symbol; |
683 | struct coff_symbol *cs = &coff_symbol; |
684 | static struct internal_syment main_sym; |
685 | static union internal_auxent main_aux; |
686 | struct coff_symbol fcn_cs_saved; |
687 | static struct internal_syment fcn_sym_saved; |
688 | static union internal_auxent fcn_aux_saved; |
689 | struct symtab *s; |
690 | /* A .file is open. */ |
691 | int in_source_file = 0; |
692 | int next_file_symnum = -1; |
693 | /* Name of the current file. */ |
694 | char *filestring = ""; |
695 | int depth = 0; |
696 | int fcn_first_line = 0; |
697 | CORE_ADDR fcn_first_line_addr = 0; |
698 | int fcn_last_line = 0; |
699 | int fcn_start_addr = 0; |
700 | long fcn_line_ptr = 0; |
701 | int val; |
702 | CORE_ADDR tmpaddr; |
703 | |
704 | /* Work around a stdio bug in SunOS4.1.1 (this makes me nervous.... |
705 | it's hard to know I've really worked around it. The fix should be |
706 | harmless, anyway). The symptom of the bug is that the first |
707 | fread (in read_one_sym), will (in my example) actually get data |
708 | from file offset 268, when the fseek was to 264 (and ftell shows |
709 | 264). This causes all hell to break loose. I was unable to |
710 | reproduce this on a short test program which operated on the same |
711 | file, performing (I think) the same sequence of operations. |
712 | |
713 | It stopped happening when I put in this (former) rewind(). |
714 | |
715 | FIXME: Find out if this has been reported to Sun, whether it has |
716 | been fixed in a later release, etc. */ |
717 | |
718 | bfd_seek (objfile->obfd, 0, 0); |
719 | |
720 | /* Position to read the symbol table. */ |
721 | val = bfd_seek (objfile->obfd, (long) symtab_offset, 0); |
722 | if (val < 0) |
723 | perror_with_name (objfile->name); |
724 | |
725 | current_objfile = objfile; |
726 | nlist_bfd_global = objfile->obfd; |
727 | nlist_nsyms_global = nsyms; |
728 | last_source_file = NULL((void*)0); |
729 | memset (opaque_type_chain, 0, sizeof opaque_type_chain); |
730 | |
731 | if (type_vector) /* Get rid of previous one */ |
732 | xfree (type_vector); |
733 | type_vector_length = 160; |
734 | type_vector = (struct type **) |
735 | xmalloc (type_vector_length * sizeof (struct type *)); |
736 | memset (type_vector, 0, type_vector_length * sizeof (struct type *)); |
737 | |
738 | coff_start_symtab (""); |
739 | |
740 | symnum = 0; |
741 | while (symnum < nsyms) |
742 | { |
743 | QUIT{ if (quit_flag) quit (); if (deprecated_interactive_hook) deprecated_interactive_hook (); }; /* Make this command interruptable. */ |
744 | |
745 | read_one_sym (cs, &main_sym, &main_aux); |
746 | |
747 | if (cs->c_symnum == next_file_symnum && cs->c_sclass != C_FILE103) |
748 | { |
749 | if (last_source_file) |
750 | coff_end_symtab (objfile); |
751 | |
752 | coff_start_symtab ("_globals_"); |
753 | complete_symtab ("_globals_", 0, 0); |
754 | /* done with all files, everything from here on out is globals */ |
755 | } |
756 | |
757 | /* Special case for file with type declarations only, no text. */ |
758 | if (!last_source_file && SDB_TYPE (cs->c_type)(((cs->c_type) & local_n_btmask) | (cs->c_type & local_n_tmask)) |
759 | && cs->c_secnum == N_DEBUG((short)-2)) |
760 | complete_symtab (filestring, 0, 0); |
761 | |
762 | /* Typedefs should not be treated as symbol definitions. */ |
763 | if (ISFCN (cs->c_type)(((unsigned long) (cs->c_type) & local_n_tmask) == ((unsigned long) (2) << local_n_btshft)) && cs->c_sclass != C_TPDEF13) |
764 | { |
765 | /* Record all functions -- external and static -- in minsyms. */ |
766 | tmpaddr = cs->c_value + ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile))((((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/coffread.c" , 766, "sect_index_text not initialized"), -1) : objfile-> sect_index_text) == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/coffread.c" , 766, "Section index is uninitialized"), -1) : objfile->section_offsets ->offsets[((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/coffread.c", 766, "sect_index_text not initialized" ), -1) : objfile->sect_index_text)]); |
767 | record_minimal_symbol (cs->c_name, tmpaddr, mst_text, objfile); |
768 | |
769 | fcn_line_ptr = main_aux.x_sym.x_fcnary.x_fcn.x_lnnoptr; |
770 | fcn_start_addr = tmpaddr; |
771 | fcn_cs_saved = *cs; |
772 | fcn_sym_saved = main_sym; |
773 | fcn_aux_saved = main_aux; |
774 | continue; |
775 | } |
776 | |
777 | switch (cs->c_sclass) |
778 | { |
779 | case C_EFCN0xff: |
780 | case C_EXTDEF5: |
781 | case C_ULABEL7: |
782 | case C_USTATIC14: |
783 | case C_LINE104: |
784 | case C_ALIAS105: |
785 | case C_HIDDEN106: |
786 | complaint (&symfile_complaints, "Bad n_sclass for symbol %s", |
787 | cs->c_name); |
788 | break; |
789 | |
790 | case C_FILE103: |
791 | /* c_value field contains symnum of next .file entry in table |
792 | or symnum of first global after last .file. */ |
793 | next_file_symnum = cs->c_value; |
794 | if (cs->c_naux > 0) |
795 | filestring = coff_getfilename (&main_aux); |
796 | else |
797 | filestring = ""; |
798 | |
799 | /* Complete symbol table for last object file |
800 | containing debugging information. */ |
801 | if (last_source_file) |
802 | { |
803 | coff_end_symtab (objfile); |
804 | coff_start_symtab (filestring); |
805 | } |
806 | in_source_file = 1; |
807 | break; |
808 | |
809 | /* C_LABEL is used for labels and static functions. Including |
810 | it here allows gdb to see static functions when no debug |
811 | info is available. */ |
812 | case C_LABEL6: |
813 | /* However, labels within a function can make weird backtraces, |
814 | so filter them out (from phdm@macqel.be). */ |
815 | if (within_function) |
816 | break; |
817 | case C_STAT3: |
818 | case C_THUMBLABEL(128 + 6): |
819 | case C_THUMBSTAT(128 + 3): |
820 | case C_THUMBSTATFUNC((128 + 3) + 20): |
821 | if (cs->c_name[0] == '.') |
822 | { |
823 | if (DEPRECATED_STREQ (cs->c_name, ".text")(strcmp ((cs->c_name), (".text")) == 0)) |
824 | { |
825 | /* FIXME: don't wire in ".text" as section name |
826 | or symbol name! */ |
827 | /* Check for in_source_file deals with case of |
828 | a file with debugging symbols |
829 | followed by a later file with no symbols. */ |
830 | if (in_source_file) |
831 | complete_symtab (filestring, |
832 | cs->c_value + ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile))((((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/coffread.c" , 832, "sect_index_text not initialized"), -1) : objfile-> sect_index_text) == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/coffread.c" , 832, "Section index is uninitialized"), -1) : objfile->section_offsets ->offsets[((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/coffread.c", 832, "sect_index_text not initialized" ), -1) : objfile->sect_index_text)]), |
833 | main_aux.x_scn.x_scnlen); |
834 | in_source_file = 0; |
835 | } |
836 | /* flush rest of '.' symbols */ |
837 | break; |
838 | } |
839 | else if (!SDB_TYPE (cs->c_type)(((cs->c_type) & local_n_btmask) | (cs->c_type & local_n_tmask)) |
840 | && cs->c_name[0] == 'L' |
841 | && (strncmp (cs->c_name, "LI%", 3) == 0 |
842 | || strncmp (cs->c_name, "LF%", 3) == 0 |
843 | || strncmp (cs->c_name, "LC%", 3) == 0 |
844 | || strncmp (cs->c_name, "LP%", 3) == 0 |
845 | || strncmp (cs->c_name, "LPB%", 4) == 0 |
846 | || strncmp (cs->c_name, "LBB%", 4) == 0 |
847 | || strncmp (cs->c_name, "LBE%", 4) == 0 |
848 | || strncmp (cs->c_name, "LPBX%", 5) == 0)) |
849 | /* At least on a 3b1, gcc generates swbeg and string labels |
850 | that look like this. Ignore them. */ |
851 | break; |
852 | /* fall in for static symbols that don't start with '.' */ |
853 | case C_THUMBEXT(128 + 2): |
854 | case C_THUMBEXTFUNC((128 + 2) + 20): |
855 | case C_EXT2: |
856 | { |
857 | /* Record it in the minimal symbols regardless of |
858 | SDB_TYPE. This parallels what we do for other debug |
859 | formats, and probably is needed to make |
860 | print_address_symbolic work right without the (now |
861 | gone) "set fast-symbolic-addr off" kludge. */ |
862 | |
863 | enum minimal_symbol_type ms_type; |
864 | int sec; |
865 | |
866 | if (cs->c_secnum == N_UNDEF((short)0)) |
867 | { |
868 | /* This is a common symbol. See if the target |
869 | environment knows where it has been relocated to. */ |
870 | CORE_ADDR reladdr; |
871 | if (target_lookup_symbol (cs->c_name, &reladdr)(*current_target.to_lookup_symbol) (cs->c_name, &reladdr )) |
872 | { |
873 | /* Error in lookup; ignore symbol. */ |
874 | break; |
875 | } |
876 | tmpaddr = reladdr; |
877 | /* The address has already been relocated; make sure that |
878 | objfile_relocate doesn't relocate it again. */ |
879 | sec = -2; |
880 | ms_type = cs->c_sclass == C_EXT2 |
881 | || cs->c_sclass == C_THUMBEXT(128 + 2) ? |
882 | mst_bss : mst_file_bss; |
883 | } |
884 | else if (cs->c_secnum == N_ABS((short)-1)) |
885 | { |
886 | /* Use the correct minimal symbol type (and don't |
887 | relocate) for absolute values. */ |
888 | ms_type = mst_abs; |
889 | sec = cs_to_section (cs, objfile); |
890 | tmpaddr = cs->c_value; |
891 | } |
892 | else |
893 | { |
894 | sec = cs_to_section (cs, objfile); |
895 | tmpaddr = cs->c_value; |
896 | /* Statics in a PE file also get relocated */ |
897 | if (cs->c_sclass == C_EXT2 |
898 | || cs->c_sclass == C_THUMBEXTFUNC((128 + 2) + 20) |
899 | || cs->c_sclass == C_THUMBEXT(128 + 2) |
900 | || (pe_file && (cs->c_sclass == C_STAT3))) |
901 | tmpaddr += ANOFFSET (objfile->section_offsets, sec)((sec == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/coffread.c" , 901, "Section index is uninitialized"), -1) : objfile->section_offsets ->offsets[sec]); |
902 | |
903 | if (sec == SECT_OFF_TEXT (objfile)((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/coffread.c" , 903, "sect_index_text not initialized"), -1) : objfile-> sect_index_text)) |
904 | { |
905 | ms_type = |
906 | cs->c_sclass == C_EXT2 || cs->c_sclass == C_THUMBEXTFUNC((128 + 2) + 20) |
907 | || cs->c_sclass == C_THUMBEXT(128 + 2) ? |
908 | mst_text : mst_file_text; |
909 | tmpaddr = SMASH_TEXT_ADDRESS (tmpaddr)(gdbarch_smash_text_address (current_gdbarch, tmpaddr)); |
910 | } |
911 | else if (sec == SECT_OFF_DATA (objfile)((objfile->sect_index_data == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/coffread.c" , 911, "sect_index_data not initialized"), -1) : objfile-> sect_index_data)) |
912 | { |
913 | ms_type = |
914 | cs->c_sclass == C_EXT2 || cs->c_sclass == C_THUMBEXT(128 + 2) ? |
915 | mst_data : mst_file_data; |
916 | } |
917 | else if (sec == SECT_OFF_BSS (objfile)(objfile)->sect_index_bss) |
918 | { |
919 | ms_type = |
920 | cs->c_sclass == C_EXT2 || cs->c_sclass == C_THUMBEXT(128 + 2) ? |
921 | mst_data : mst_file_data; |
922 | } |
923 | else |
924 | ms_type = mst_unknown; |
925 | } |
926 | |
927 | if (cs->c_name[0] != '@' /* Skip tdesc symbols */ ) |
928 | { |
929 | struct minimal_symbol *msym; |
930 | msym = prim_record_minimal_symbol_and_info |
931 | (cs->c_name, tmpaddr, ms_type, NULL((void*)0), |
932 | sec, NULL((void*)0), objfile); |
933 | if (msym) |
934 | COFF_MAKE_MSYMBOL_SPECIAL (cs->c_sclass, msym)(gdbarch_coff_make_msymbol_special (current_gdbarch, cs->c_sclass , msym)); |
935 | } |
936 | if (SDB_TYPE (cs->c_type)(((cs->c_type) & local_n_btmask) | (cs->c_type & local_n_tmask))) |
937 | { |
938 | struct symbol *sym; |
939 | sym = process_coff_symbol |
940 | (cs, &main_aux, objfile); |
941 | SYMBOL_VALUE (sym)(sym)->ginfo.value.ivalue = tmpaddr; |
942 | SYMBOL_SECTION (sym)(sym)->ginfo.section = sec; |
943 | } |
944 | } |
945 | break; |
946 | |
947 | case C_FCN101: |
948 | if (DEPRECATED_STREQ (cs->c_name, ".bf")(strcmp ((cs->c_name), (".bf")) == 0)) |
949 | { |
950 | within_function = 1; |
951 | |
952 | /* value contains address of first non-init type code */ |
953 | /* main_aux.x_sym.x_misc.x_lnsz.x_lnno |
954 | contains line number of '{' } */ |
955 | if (cs->c_naux != 1) |
956 | complaint (&symfile_complaints, |
957 | "`.bf' symbol %d has no aux entry", cs->c_symnum); |
958 | fcn_first_line = main_aux.x_sym.x_misc.x_lnsz.x_lnno; |
959 | fcn_first_line_addr = cs->c_value; |
960 | |
961 | /* Might want to check that locals are 0 and |
962 | context_stack_depth is zero, and complain if not. */ |
963 | |
964 | depth = 0; |
965 | new = push_context (depth, fcn_start_addr); |
966 | fcn_cs_saved.c_name = getsymname (&fcn_sym_saved); |
967 | new->name = |
968 | process_coff_symbol (&fcn_cs_saved, &fcn_aux_saved, objfile); |
969 | } |
970 | else if (DEPRECATED_STREQ (cs->c_name, ".ef")(strcmp ((cs->c_name), (".ef")) == 0)) |
971 | { |
972 | if (!within_function) |
973 | error ("Bad coff function information\n"); |
974 | /* the value of .ef is the address of epilogue code; |
975 | not useful for gdb. */ |
976 | /* { main_aux.x_sym.x_misc.x_lnsz.x_lnno |
977 | contains number of lines to '}' */ |
978 | |
979 | if (context_stack_depth <= 0) |
980 | { /* We attempted to pop an empty context stack */ |
981 | complaint (&symfile_complaints, |
982 | "`.ef' symbol without matching `.bf' symbol ignored starting at symnum %d", |
983 | cs->c_symnum); |
984 | within_function = 0; |
985 | break; |
986 | } |
987 | |
988 | new = pop_context (); |
989 | /* Stack must be empty now. */ |
990 | if (context_stack_depth > 0 || new == NULL((void*)0)) |
991 | { |
992 | complaint (&symfile_complaints, |
993 | "Unmatched .ef symbol(s) ignored starting at symnum %d", |
994 | cs->c_symnum); |
995 | within_function = 0; |
996 | break; |
997 | } |
998 | if (cs->c_naux != 1) |
999 | { |
1000 | complaint (&symfile_complaints, |
1001 | "`.ef' symbol %d has no aux entry", cs->c_symnum); |
1002 | fcn_last_line = 0x7FFFFFFF; |
1003 | } |
1004 | else |
1005 | { |
1006 | fcn_last_line = main_aux.x_sym.x_misc.x_lnsz.x_lnno; |
1007 | } |
1008 | /* fcn_first_line is the line number of the opening '{'. |
1009 | Do not record it - because it would affect gdb's idea |
1010 | of the line number of the first statement of the function - |
1011 | except for one-line functions, for which it is also the line |
1012 | number of all the statements and of the closing '}', and |
1013 | for which we do not have any other statement-line-number. */ |
1014 | if (fcn_last_line == 1) |
1015 | record_line (current_subfile, fcn_first_line, |
1016 | fcn_first_line_addr); |
1017 | else |
1018 | enter_linenos (fcn_line_ptr, fcn_first_line, fcn_last_line, |
1019 | objfile); |
1020 | |
1021 | finish_block (new->name, &local_symbols, new->old_blocks, |
1022 | new->start_addr, |
1023 | #if defined (FUNCTION_EPILOGUE_SIZE) |
1024 | /* This macro should be defined only on |
1025 | machines where the |
1026 | fcn_aux_saved.x_sym.x_misc.x_fsize |
1027 | field is always zero. |
1028 | So use the .bf record information that |
1029 | points to the epilogue and add the size |
1030 | of the epilogue. */ |
1031 | cs->c_value |
1032 | + FUNCTION_EPILOGUE_SIZE |
1033 | + ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile))((((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/coffread.c" , 1033, "sect_index_text not initialized"), -1) : objfile-> sect_index_text) == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/coffread.c" , 1033, "Section index is uninitialized"), -1) : objfile-> section_offsets->offsets[((objfile->sect_index_text == - 1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/coffread.c" , 1033, "sect_index_text not initialized"), -1) : objfile-> sect_index_text)]), |
1034 | #else |
1035 | fcn_cs_saved.c_value |
1036 | + fcn_aux_saved.x_sym.x_misc.x_fsize |
1037 | + ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile))((((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/coffread.c" , 1037, "sect_index_text not initialized"), -1) : objfile-> sect_index_text) == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/coffread.c" , 1037, "Section index is uninitialized"), -1) : objfile-> section_offsets->offsets[((objfile->sect_index_text == - 1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/coffread.c" , 1037, "sect_index_text not initialized"), -1) : objfile-> sect_index_text)]), |
1038 | #endif |
1039 | objfile |
1040 | ); |
1041 | within_function = 0; |
1042 | } |
1043 | break; |
1044 | |
1045 | case C_BLOCK100: |
1046 | if (DEPRECATED_STREQ (cs->c_name, ".bb")(strcmp ((cs->c_name), (".bb")) == 0)) |
1047 | { |
1048 | tmpaddr = cs->c_value; |
1049 | tmpaddr += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile))((((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/coffread.c" , 1049, "sect_index_text not initialized"), -1) : objfile-> sect_index_text) == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/coffread.c" , 1049, "Section index is uninitialized"), -1) : objfile-> section_offsets->offsets[((objfile->sect_index_text == - 1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/coffread.c" , 1049, "sect_index_text not initialized"), -1) : objfile-> sect_index_text)]); |
1050 | push_context (++depth, tmpaddr); |
1051 | } |
1052 | else if (DEPRECATED_STREQ (cs->c_name, ".eb")(strcmp ((cs->c_name), (".eb")) == 0)) |
1053 | { |
1054 | if (context_stack_depth <= 0) |
1055 | { /* We attempted to pop an empty context stack */ |
1056 | complaint (&symfile_complaints, |
1057 | "`.eb' symbol without matching `.bb' symbol ignored starting at symnum %d", |
1058 | cs->c_symnum); |
1059 | break; |
1060 | } |
1061 | |
1062 | new = pop_context (); |
1063 | if (depth-- != new->depth) |
1064 | { |
1065 | complaint (&symfile_complaints, |
1066 | "Mismatched .eb symbol ignored starting at symnum %d", |
1067 | symnum); |
1068 | break; |
1069 | } |
1070 | if (local_symbols && context_stack_depth > 0) |
1071 | { |
1072 | tmpaddr = |
1073 | cs->c_value + ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile))((((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/coffread.c" , 1073, "sect_index_text not initialized"), -1) : objfile-> sect_index_text) == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/coffread.c" , 1073, "Section index is uninitialized"), -1) : objfile-> section_offsets->offsets[((objfile->sect_index_text == - 1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/coffread.c" , 1073, "sect_index_text not initialized"), -1) : objfile-> sect_index_text)]); |
1074 | /* Make a block for the local symbols within. */ |
1075 | finish_block (0, &local_symbols, new->old_blocks, |
1076 | new->start_addr, tmpaddr, objfile); |
1077 | } |
1078 | /* Now pop locals of block just finished. */ |
1079 | local_symbols = new->locals; |
1080 | } |
1081 | break; |
1082 | |
1083 | default: |
1084 | process_coff_symbol (cs, &main_aux, objfile); |
1085 | break; |
1086 | } |
1087 | } |
1088 | |
1089 | if ((nsyms == 0) && (pe_file)) |
1090 | { |
1091 | /* We've got no debugging symbols, but it's is a portable |
1092 | executable, so try to read the export table */ |
1093 | read_pe_exported_syms (objfile); |
1094 | } |
1095 | |
1096 | if (last_source_file) |
1097 | coff_end_symtab (objfile); |
1098 | |
1099 | /* Patch up any opaque types (references to types that are not defined |
1100 | in the file where they are referenced, e.g. "struct foo *bar"). */ |
1101 | ALL_OBJFILE_SYMTABS (objfile, s)for ((s) = (objfile) -> symtabs; (s) != ((void*)0); (s) = ( s) -> next) |
1102 | patch_opaque_types (s); |
1103 | |
1104 | current_objfile = NULL((void*)0); |
1105 | } |
1106 | |
1107 | /* Routines for reading headers and symbols from executable. */ |
1108 | |
1109 | /* Read the next symbol, swap it, and return it in both internal_syment |
1110 | form, and coff_symbol form. Also return its first auxent, if any, |
1111 | in internal_auxent form, and skip any other auxents. */ |
1112 | |
1113 | static void |
1114 | read_one_sym (struct coff_symbol *cs, |
1115 | struct internal_syment *sym, |
1116 | union internal_auxent *aux) |
1117 | { |
1118 | int i; |
1119 | |
1120 | cs->c_symnum = symnum; |
1121 | bfd_bread (temp_sym, local_symesz, nlist_bfd_global); |
1122 | bfd_coff_swap_sym_in (symfile_bfd, temp_sym, (char *) sym)((((bfd_coff_backend_data *) (symfile_bfd)->xvec->backend_data )->_bfd_coff_swap_sym_in) (symfile_bfd,temp_sym,(char *) sym )); |
1123 | cs->c_naux = sym->n_numaux & 0xff; |
1124 | if (cs->c_naux >= 1) |
1125 | { |
1126 | bfd_bread (temp_aux, local_auxesz, nlist_bfd_global); |
1127 | bfd_coff_swap_aux_in (symfile_bfd, temp_aux, sym->n_type, sym->n_sclass,((((bfd_coff_backend_data *) (symfile_bfd)->xvec->backend_data )->_bfd_coff_swap_aux_in) (symfile_bfd,temp_aux,sym->n_type ,sym->n_sclass,0,cs->c_naux,(char *) aux)) |
1128 | 0, cs->c_naux, (char *) aux)((((bfd_coff_backend_data *) (symfile_bfd)->xvec->backend_data )->_bfd_coff_swap_aux_in) (symfile_bfd,temp_aux,sym->n_type ,sym->n_sclass,0,cs->c_naux,(char *) aux)); |
1129 | /* If more than one aux entry, read past it (only the first aux |
1130 | is important). */ |
1131 | for (i = 1; i < cs->c_naux; i++) |
1132 | bfd_bread (temp_aux, local_auxesz, nlist_bfd_global); |
1133 | } |
1134 | cs->c_name = getsymname (sym); |
1135 | cs->c_value = sym->n_value; |
1136 | cs->c_sclass = (sym->n_sclass & 0xff); |
1137 | cs->c_secnum = sym->n_scnum; |
1138 | cs->c_type = (unsigned) sym->n_type; |
1139 | if (!SDB_TYPE (cs->c_type)(((cs->c_type) & local_n_btmask) | (cs->c_type & local_n_tmask))) |
1140 | cs->c_type = 0; |
1141 | |
1142 | #if 0 |
1143 | if (cs->c_sclass & 128) |
1144 | printf ("thumb symbol %s, class 0x%x\n", cs->c_name, cs->c_sclass); |
1145 | #endif |
1146 | |
1147 | symnum += 1 + cs->c_naux; |
1148 | |
1149 | /* The PE file format stores symbol values as offsets within the |
1150 | section, rather than as absolute addresses. We correct that |
1151 | here, if the symbol has an appropriate storage class. FIXME: We |
1152 | should use BFD to read the symbols, rather than duplicating the |
1153 | work here. */ |
1154 | if (pe_file) |
1155 | { |
1156 | switch (cs->c_sclass) |
1157 | { |
1158 | case C_EXT2: |
1159 | case C_THUMBEXT(128 + 2): |
1160 | case C_THUMBEXTFUNC((128 + 2) + 20): |
1161 | case C_SECTION104: |
1162 | case C_NT_WEAK105: |
1163 | case C_STAT3: |
1164 | case C_THUMBSTAT(128 + 3): |
1165 | case C_THUMBSTATFUNC((128 + 3) + 20): |
1166 | case C_LABEL6: |
1167 | case C_THUMBLABEL(128 + 6): |
1168 | case C_BLOCK100: |
1169 | case C_FCN101: |
1170 | case C_EFCN0xff: |
1171 | if (cs->c_secnum != 0) |
1172 | cs->c_value += cs_section_address (cs, symfile_bfd); |
1173 | break; |
1174 | } |
1175 | } |
1176 | } |
1177 | |
1178 | /* Support for string table handling */ |
1179 | |
1180 | static char *stringtab = NULL((void*)0); |
1181 | |
1182 | static int |
1183 | init_stringtab (bfd *abfd, long offset) |
1184 | { |
1185 | long length; |
1186 | int val; |
1187 | unsigned char lengthbuf[4]; |
1188 | |
1189 | free_stringtab (); |
1190 | |
1191 | /* If the file is stripped, the offset might be zero, indicating no |
1192 | string table. Just return with `stringtab' set to null. */ |
1193 | if (offset == 0) |
1194 | return 0; |
1195 | |
1196 | if (bfd_seek (abfd, offset, 0) < 0) |
1197 | return -1; |
1198 | |
1199 | val = bfd_bread ((char *) lengthbuf, sizeof lengthbuf, abfd); |
1200 | length = bfd_h_get_32 (symfile_bfd, lengthbuf)((*((symfile_bfd)->xvec->bfd_h_getx32)) (lengthbuf)); |
1201 | |
1202 | /* If no string table is needed, then the file may end immediately |
1203 | after the symbols. Just return with `stringtab' set to null. */ |
1204 | if (val != sizeof lengthbuf || length < sizeof lengthbuf) |
1205 | return 0; |
1206 | |
1207 | stringtab = (char *) xmalloc (length); |
1208 | /* This is in target format (probably not very useful, and not currently |
1209 | used), not host format. */ |
1210 | memcpy (stringtab, lengthbuf, sizeof lengthbuf); |
1211 | if (length == sizeof length) /* Empty table -- just the count */ |
1212 | return 0; |
1213 | |
1214 | val = bfd_bread (stringtab + sizeof lengthbuf, length - sizeof lengthbuf, |
1215 | abfd); |
1216 | if (val != length - sizeof lengthbuf || stringtab[length - 1] != '\0') |
1217 | return -1; |
1218 | |
1219 | return 0; |
1220 | } |
1221 | |
1222 | static void |
1223 | free_stringtab (void) |
1224 | { |
1225 | if (stringtab) |
1226 | xfree (stringtab); |
1227 | stringtab = NULL((void*)0); |
1228 | } |
1229 | |
1230 | static void |
1231 | free_stringtab_cleanup (void *ignore) |
1232 | { |
1233 | free_stringtab (); |
1234 | } |
1235 | |
1236 | static char * |
1237 | getsymname (struct internal_syment *symbol_entry) |
1238 | { |
1239 | static char buffer[SYMNMLEN8 + 1]; |
1240 | char *result; |
1241 | |
1242 | if (symbol_entry->_n._n_n._n_zeroes == 0) |
1243 | { |
1244 | /* FIXME: Probably should be detecting corrupt symbol files by |
1245 | seeing whether offset points to within the stringtab. */ |
1246 | result = stringtab + symbol_entry->_n._n_n._n_offset; |
1247 | } |
1248 | else |
1249 | { |
1250 | strncpy (buffer, symbol_entry->_n._n_name, SYMNMLEN8); |
1251 | buffer[SYMNMLEN8] = '\0'; |
1252 | result = buffer; |
1253 | } |
1254 | return result; |
1255 | } |
1256 | |
1257 | /* Extract the file name from the aux entry of a C_FILE symbol. Return |
1258 | only the last component of the name. Result is in static storage and |
1259 | is only good for temporary use. */ |
1260 | |
1261 | static char * |
1262 | coff_getfilename (union internal_auxent *aux_entry) |
1263 | { |
1264 | static char buffer[BUFSIZ1024]; |
1265 | char *temp; |
1266 | char *result; |
1267 | |
1268 | if (aux_entry->x_file.x_n.x_zeroes == 0) |
1269 | strcpy (buffer, stringtab + aux_entry->x_file.x_n.x_offset); |
1270 | else |
1271 | { |
1272 | strncpy (buffer, aux_entry->x_file.x_fname, FILNMLEN14); |
1273 | buffer[FILNMLEN14] = '\0'; |
1274 | } |
1275 | result = buffer; |
1276 | |
1277 | /* FIXME: We should not be throwing away the information about what |
1278 | directory. It should go into dirname of the symtab, or some such |
1279 | place. */ |
1280 | if ((temp = strrchr (result, '/')) != NULL((void*)0)) |
1281 | result = temp + 1; |
1282 | return (result); |
1283 | } |
1284 | |
1285 | /* Support for line number handling. */ |
1286 | |
1287 | static char *linetab = NULL((void*)0); |
1288 | static long linetab_offset; |
1289 | static unsigned long linetab_size; |
1290 | |
1291 | /* Read in all the line numbers for fast lookups later. Leave them in |
1292 | external (unswapped) format in memory; we'll swap them as we enter |
1293 | them into GDB's data structures. */ |
1294 | |
1295 | static int |
1296 | init_lineno (bfd *abfd, long offset, int size) |
1297 | { |
1298 | int val; |
1299 | |
1300 | linetab_offset = offset; |
1301 | linetab_size = size; |
1302 | |
1303 | free_linetab (); |
1304 | |
1305 | if (size == 0) |
1306 | return 0; |
1307 | |
1308 | if (bfd_seek (abfd, offset, 0) < 0) |
1309 | return -1; |
1310 | |
1311 | /* Allocate the desired table, plus a sentinel */ |
1312 | linetab = (char *) xmalloc (size + local_linesz); |
1313 | |
1314 | val = bfd_bread (linetab, size, abfd); |
1315 | if (val != size) |
1316 | return -1; |
1317 | |
1318 | /* Terminate it with an all-zero sentinel record */ |
1319 | memset (linetab + size, 0, local_linesz); |
1320 | |
1321 | return 0; |
1322 | } |
1323 | |
1324 | static void |
1325 | free_linetab (void) |
1326 | { |
1327 | if (linetab) |
1328 | xfree (linetab); |
1329 | linetab = NULL((void*)0); |
1330 | } |
1331 | |
1332 | static void |
1333 | free_linetab_cleanup (void *ignore) |
1334 | { |
1335 | free_linetab (); |
1336 | } |
1337 | |
1338 | #if !defined (L_LNNO32) |
1339 | #define L_LNNO32(lp)((lp)->l_lnno) ((lp)->l_lnno) |
1340 | #endif |
1341 | |
1342 | static void |
1343 | enter_linenos (long file_offset, int first_line, |
1344 | int last_line, struct objfile *objfile) |
1345 | { |
1346 | char *rawptr; |
1347 | struct internal_lineno lptr; |
1348 | |
1349 | if (!linetab) |
1350 | return; |
1351 | if (file_offset < linetab_offset) |
1352 | { |
1353 | complaint (&symfile_complaints, |
1354 | "Line number pointer %ld lower than start of line numbers", |
1355 | file_offset); |
1356 | if (file_offset > linetab_size) /* Too big to be an offset? */ |
1357 | return; |
1358 | file_offset += linetab_offset; /* Try reading at that linetab offset */ |
1359 | } |
1360 | |
1361 | rawptr = &linetab[file_offset - linetab_offset]; |
1362 | |
1363 | /* skip first line entry for each function */ |
1364 | rawptr += local_linesz; |
1365 | /* line numbers start at one for the first line of the function */ |
1366 | first_line--; |
1367 | |
1368 | /* If the line number table is full (e.g. 64K lines in COFF debug |
1369 | info), the next function's L_LNNO32 might not be zero, so don't |
1370 | overstep the table's end in any case. */ |
1371 | while (rawptr <= &linetab[0] + linetab_size) |
1372 | { |
1373 | bfd_coff_swap_lineno_in (symfile_bfd, rawptr, &lptr)((((bfd_coff_backend_data *) (symfile_bfd)->xvec->backend_data )->_bfd_coff_swap_lineno_in) (symfile_bfd,rawptr,&lptr )); |
1374 | rawptr += local_linesz; |
1375 | /* The next function, or the sentinel, will have L_LNNO32 zero; |
1376 | we exit. */ |
1377 | if (L_LNNO32 (&lptr)((&lptr)->l_lnno) && L_LNNO32 (&lptr)((&lptr)->l_lnno) <= last_line) |
1378 | record_line (current_subfile, first_line + L_LNNO32 (&lptr)((&lptr)->l_lnno), |
1379 | lptr.l_addr.l_paddr |
1380 | + ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile))((((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/coffread.c" , 1380, "sect_index_text not initialized"), -1) : objfile-> sect_index_text) == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/coffread.c" , 1380, "Section index is uninitialized"), -1) : objfile-> section_offsets->offsets[((objfile->sect_index_text == - 1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/coffread.c" , 1380, "sect_index_text not initialized"), -1) : objfile-> sect_index_text)])); |
1381 | else |
1382 | break; |
1383 | } |
1384 | } |
1385 | |
1386 | static void |
1387 | patch_type (struct type *type, struct type *real_type) |
1388 | { |
1389 | struct type *target = TYPE_TARGET_TYPE (type)(type)->main_type->target_type; |
1390 | struct type *real_target = TYPE_TARGET_TYPE (real_type)(real_type)->main_type->target_type; |
1391 | int field_size = TYPE_NFIELDS (real_target)(real_target)->main_type->nfields * sizeof (struct field); |
1392 | |
1393 | TYPE_LENGTH (target)(target)->length = TYPE_LENGTH (real_target)(real_target)->length; |
1394 | TYPE_NFIELDS (target)(target)->main_type->nfields = TYPE_NFIELDS (real_target)(real_target)->main_type->nfields; |
1395 | TYPE_FIELDS (target)(target)->main_type->fields = (struct field *) TYPE_ALLOC (target, field_size)((target)->main_type->objfile != ((void*)0) ? __extension__ ({ struct obstack *__h = (&(target)->main_type->objfile -> objfile_obstack); __extension__ ({ struct obstack *__o = (__h); int __len = ((field_size)); if (__o->chunk_limit - __o->next_free < __len) _obstack_newchunk (__o, __len ); ((__o)->next_free += (__len)); (void) 0; }); __extension__ ({ struct obstack *__o1 = (__h); void *value; value = (void * ) __o1->object_base; if (__o1->next_free == value) __o1 ->maybe_empty_object = 1; __o1->next_free = (((((__o1-> next_free) - (char *) 0)+__o1->alignment_mask) & ~ (__o1 ->alignment_mask)) + (char *) 0); if (__o1->next_free - (char *)__o1->chunk > __o1->chunk_limit - (char *)__o1 ->chunk) __o1->next_free = __o1->chunk_limit; __o1-> object_base = __o1->next_free; value; }); }) : xmalloc (field_size )); |
1396 | |
1397 | memcpy (TYPE_FIELDS (target)(target)->main_type->fields, TYPE_FIELDS (real_target)(real_target)->main_type->fields, field_size); |
1398 | |
1399 | if (TYPE_NAME (real_target)(real_target)->main_type->name) |
1400 | { |
1401 | if (TYPE_NAME (target)(target)->main_type->name) |
1402 | xfree (TYPE_NAME (target)(target)->main_type->name); |
1403 | TYPE_NAME (target)(target)->main_type->name = concat (TYPE_NAME (real_target)(real_target)->main_type->name, NULL((void*)0)); |
1404 | } |
1405 | } |
1406 | |
1407 | /* Patch up all appropriate typedef symbols in the opaque_type_chains |
1408 | so that they can be used to print out opaque data structures properly. */ |
1409 | |
1410 | static void |
1411 | patch_opaque_types (struct symtab *s) |
1412 | { |
1413 | struct block *b; |
1414 | struct dict_iterator iter; |
1415 | struct symbol *real_sym; |
1416 | |
1417 | /* Go through the per-file symbols only */ |
1418 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK)((s)->blockvector)->block[STATIC_BLOCK]; |
1419 | ALL_BLOCK_SYMBOLS (b, iter, real_sym)for ((real_sym) = dict_iterator_first (((b)->dict), &( iter)); (real_sym); (real_sym) = dict_iterator_next (&(iter ))) |
1420 | { |
1421 | /* Find completed typedefs to use to fix opaque ones. |
1422 | Remove syms from the chain when their types are stored, |
1423 | but search the whole chain, as there may be several syms |
1424 | from different files with the same name. */ |
1425 | if (SYMBOL_CLASS (real_sym)(real_sym)->aclass == LOC_TYPEDEF && |
1426 | SYMBOL_DOMAIN (real_sym)(real_sym)->domain == VAR_DOMAIN && |
1427 | TYPE_CODE (SYMBOL_TYPE (real_sym))((real_sym)->type)->main_type->code == TYPE_CODE_PTR && |
1428 | TYPE_LENGTH (TYPE_TARGET_TYPE (SYMBOL_TYPE (real_sym)))(((real_sym)->type)->main_type->target_type)->length != 0) |
1429 | { |
1430 | char *name = DEPRECATED_SYMBOL_NAME (real_sym)(real_sym)->ginfo.name; |
1431 | int hash = hashname (name); |
1432 | struct symbol *sym, *prev; |
1433 | |
1434 | prev = 0; |
1435 | for (sym = opaque_type_chain[hash]; sym;) |
1436 | { |
1437 | if (name[0] == DEPRECATED_SYMBOL_NAME (sym)(sym)->ginfo.name[0] && |
1438 | strcmp (name + 1, DEPRECATED_SYMBOL_NAME (sym)(sym)->ginfo.name + 1) == 0) |
1439 | { |
1440 | if (prev) |
1441 | { |
1442 | SYMBOL_VALUE_CHAIN (prev)(prev)->ginfo.value.chain = SYMBOL_VALUE_CHAIN (sym)(sym)->ginfo.value.chain; |
1443 | } |
1444 | else |
1445 | { |
1446 | opaque_type_chain[hash] = SYMBOL_VALUE_CHAIN (sym)(sym)->ginfo.value.chain; |
1447 | } |
1448 | |
1449 | patch_type (SYMBOL_TYPE (sym)(sym)->type, SYMBOL_TYPE (real_sym)(real_sym)->type); |
1450 | |
1451 | if (prev) |
1452 | { |
1453 | sym = SYMBOL_VALUE_CHAIN (prev)(prev)->ginfo.value.chain; |
1454 | } |
1455 | else |
1456 | { |
1457 | sym = opaque_type_chain[hash]; |
1458 | } |
1459 | } |
1460 | else |
1461 | { |
1462 | prev = sym; |
1463 | sym = SYMBOL_VALUE_CHAIN (sym)(sym)->ginfo.value.chain; |
1464 | } |
1465 | } |
1466 | } |
1467 | } |
1468 | } |
1469 | |
1470 | static struct symbol * |
1471 | process_coff_symbol (struct coff_symbol *cs, |
1472 | union internal_auxent *aux, |
1473 | struct objfile *objfile) |
1474 | { |
1475 | struct symbol *sym |
1476 | = (struct symbol *) obstack_alloc (&objfile->objfile_obstack,__extension__ ({ struct obstack *__h = (&objfile->objfile_obstack ); __extension__ ({ struct obstack *__o = (__h); int __len = ( (sizeof (struct symbol))); if (__o->chunk_limit - __o-> next_free < __len) _obstack_newchunk (__o, __len); ((__o)-> next_free += (__len)); (void) 0; }); __extension__ ({ struct obstack *__o1 = (__h); void *value; value = (void *) __o1->object_base ; if (__o1->next_free == value) __o1->maybe_empty_object = 1; __o1->next_free = (((((__o1->next_free) - (char * ) 0)+__o1->alignment_mask) & ~ (__o1->alignment_mask )) + (char *) 0); if (__o1->next_free - (char *)__o1->chunk > __o1->chunk_limit - (char *)__o1->chunk) __o1-> next_free = __o1->chunk_limit; __o1->object_base = __o1 ->next_free; value; }); }) |
1477 | sizeof (struct symbol))__extension__ ({ struct obstack *__h = (&objfile->objfile_obstack ); __extension__ ({ struct obstack *__o = (__h); int __len = ( (sizeof (struct symbol))); if (__o->chunk_limit - __o-> next_free < __len) _obstack_newchunk (__o, __len); ((__o)-> next_free += (__len)); (void) 0; }); __extension__ ({ struct obstack *__o1 = (__h); void *value; value = (void *) __o1->object_base ; if (__o1->next_free == value) __o1->maybe_empty_object = 1; __o1->next_free = (((((__o1->next_free) - (char * ) 0)+__o1->alignment_mask) & ~ (__o1->alignment_mask )) + (char *) 0); if (__o1->next_free - (char *)__o1->chunk > __o1->chunk_limit - (char *)__o1->chunk) __o1-> next_free = __o1->chunk_limit; __o1->object_base = __o1 ->next_free; value; }); }); |
1478 | char *name; |
1479 | |
1480 | memset (sym, 0, sizeof (struct symbol)); |
1481 | name = cs->c_name; |
1482 | name = EXTERNAL_NAME (name, objfile->obfd)(name[0] == ((objfile->obfd)->xvec->symbol_leading_char )? name+1: name); |
1483 | SYMBOL_LANGUAGE (sym)(sym)->ginfo.language = language_auto; |
1484 | SYMBOL_SET_NAMES (sym, name, strlen (name), objfile)symbol_set_names (&(sym)->ginfo, name, strlen (name), objfile ); |
1485 | |
1486 | /* default assumptions */ |
1487 | SYMBOL_VALUE (sym)(sym)->ginfo.value.ivalue = cs->c_value; |
1488 | SYMBOL_DOMAIN (sym)(sym)->domain = VAR_DOMAIN; |
1489 | SYMBOL_SECTION (sym)(sym)->ginfo.section = cs_to_section (cs, objfile); |
1490 | |
1491 | if (ISFCN (cs->c_type)(((unsigned long) (cs->c_type) & local_n_tmask) == ((unsigned long) (2) << local_n_btshft))) |
1492 | { |
1493 | SYMBOL_VALUE (sym)(sym)->ginfo.value.ivalue += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile))((((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/coffread.c" , 1493, "sect_index_text not initialized"), -1) : objfile-> sect_index_text) == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/coffread.c" , 1493, "Section index is uninitialized"), -1) : objfile-> section_offsets->offsets[((objfile->sect_index_text == - 1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/coffread.c" , 1493, "sect_index_text not initialized"), -1) : objfile-> sect_index_text)]); |
1494 | SYMBOL_TYPE (sym)(sym)->type = |
1495 | lookup_function_type (decode_function_type (cs, cs->c_type, aux)); |
1496 | |
1497 | SYMBOL_CLASS (sym)(sym)->aclass = LOC_BLOCK; |
1498 | if (cs->c_sclass == C_STAT3 || cs->c_sclass == C_THUMBSTAT(128 + 3) |
1499 | || cs->c_sclass == C_THUMBSTATFUNC((128 + 3) + 20)) |
1500 | add_symbol_to_list (sym, &file_symbols); |
1501 | else if (cs->c_sclass == C_EXT2 || cs->c_sclass == C_THUMBEXT(128 + 2) |
1502 | || cs->c_sclass == C_THUMBEXTFUNC((128 + 2) + 20)) |
1503 | add_symbol_to_list (sym, &global_symbols); |
1504 | } |
1505 | else |
1506 | { |
1507 | SYMBOL_TYPE (sym)(sym)->type = decode_type (cs, cs->c_type, aux); |
1508 | switch (cs->c_sclass) |
1509 | { |
1510 | case C_NULL0: |
1511 | break; |
1512 | |
1513 | case C_AUTO1: |
1514 | SYMBOL_CLASS (sym)(sym)->aclass = LOC_LOCAL; |
1515 | add_symbol_to_list (sym, &local_symbols); |
1516 | break; |
1517 | |
1518 | case C_THUMBEXT(128 + 2): |
1519 | case C_THUMBEXTFUNC((128 + 2) + 20): |
1520 | case C_EXT2: |
1521 | SYMBOL_CLASS (sym)(sym)->aclass = LOC_STATIC; |
1522 | SYMBOL_VALUE_ADDRESS (sym)(sym)->ginfo.value.address = (CORE_ADDR) cs->c_value; |
1523 | SYMBOL_VALUE_ADDRESS (sym)(sym)->ginfo.value.address += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile))((((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/coffread.c" , 1523, "sect_index_text not initialized"), -1) : objfile-> sect_index_text) == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/coffread.c" , 1523, "Section index is uninitialized"), -1) : objfile-> section_offsets->offsets[((objfile->sect_index_text == - 1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/coffread.c" , 1523, "sect_index_text not initialized"), -1) : objfile-> sect_index_text)]); |
1524 | add_symbol_to_list (sym, &global_symbols); |
1525 | break; |
1526 | |
1527 | case C_THUMBSTAT(128 + 3): |
1528 | case C_THUMBSTATFUNC((128 + 3) + 20): |
1529 | case C_STAT3: |
1530 | SYMBOL_CLASS (sym)(sym)->aclass = LOC_STATIC; |
1531 | SYMBOL_VALUE_ADDRESS (sym)(sym)->ginfo.value.address = (CORE_ADDR) cs->c_value; |
1532 | SYMBOL_VALUE_ADDRESS (sym)(sym)->ginfo.value.address += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile))((((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/coffread.c" , 1532, "sect_index_text not initialized"), -1) : objfile-> sect_index_text) == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/coffread.c" , 1532, "Section index is uninitialized"), -1) : objfile-> section_offsets->offsets[((objfile->sect_index_text == - 1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/coffread.c" , 1532, "sect_index_text not initialized"), -1) : objfile-> sect_index_text)]); |
1533 | if (within_function) |
1534 | { |
1535 | /* Static symbol of local scope */ |
1536 | add_symbol_to_list (sym, &local_symbols); |
1537 | } |
1538 | else |
1539 | { |
1540 | /* Static symbol at top level of file */ |
1541 | add_symbol_to_list (sym, &file_symbols); |
1542 | } |
1543 | break; |
1544 | |
1545 | #ifdef C_GLBLREG /* AMD coff */ |
1546 | case C_GLBLREG: |
1547 | #endif |
1548 | case C_REG4: |
1549 | SYMBOL_CLASS (sym)(sym)->aclass = LOC_REGISTER; |
1550 | SYMBOL_VALUE (sym)(sym)->ginfo.value.ivalue = SDB_REG_TO_REGNUM (cs->c_value)(gdbarch_sdb_reg_to_regnum (current_gdbarch, cs->c_value)); |
1551 | add_symbol_to_list (sym, &local_symbols); |
1552 | break; |
1553 | |
1554 | case C_THUMBLABEL(128 + 6): |
1555 | case C_LABEL6: |
1556 | break; |
1557 | |
1558 | case C_ARG9: |
1559 | SYMBOL_CLASS (sym)(sym)->aclass = LOC_ARG; |
1560 | add_symbol_to_list (sym, &local_symbols); |
1561 | #if !defined (BELIEVE_PCC_PROMOTION(gdbarch_believe_pcc_promotion (current_gdbarch))) |
1562 | if (TARGET_BYTE_ORDER(gdbarch_byte_order (current_gdbarch)) == BFD_ENDIAN_BIG) |
1563 | { |
1564 | /* If PCC says a parameter is a short or a char, |
1565 | aligned on an int boundary, realign it to the |
1566 | "little end" of the int. */ |
1567 | struct type *temptype; |
1568 | temptype = lookup_fundamental_type (current_objfile, |
1569 | FT_INTEGER8); |
1570 | if (TYPE_LENGTH (SYMBOL_TYPE (sym))((sym)->type)->length < TYPE_LENGTH (temptype)(temptype)->length |
1571 | && TYPE_CODE (SYMBOL_TYPE (sym))((sym)->type)->main_type->code == TYPE_CODE_INT |
1572 | && 0 == SYMBOL_VALUE (sym)(sym)->ginfo.value.ivalue % TYPE_LENGTH (temptype)(temptype)->length) |
1573 | { |
1574 | SYMBOL_VALUE (sym)(sym)->ginfo.value.ivalue += |
1575 | TYPE_LENGTH (temptype)(temptype)->length |
1576 | - TYPE_LENGTH (SYMBOL_TYPE (sym))((sym)->type)->length; |
1577 | } |
1578 | } |
1579 | #endif |
1580 | break; |
1581 | |
1582 | case C_REGPARM17: |
1583 | SYMBOL_CLASS (sym)(sym)->aclass = LOC_REGPARM; |
1584 | SYMBOL_VALUE (sym)(sym)->ginfo.value.ivalue = SDB_REG_TO_REGNUM (cs->c_value)(gdbarch_sdb_reg_to_regnum (current_gdbarch, cs->c_value)); |
1585 | add_symbol_to_list (sym, &local_symbols); |
1586 | #if !defined (BELIEVE_PCC_PROMOTION(gdbarch_believe_pcc_promotion (current_gdbarch))) |
1587 | /* FIXME: This should retain the current type, since it's just |
1588 | a register value. gnu@adobe, 26Feb93 */ |
1589 | { |
1590 | /* If PCC says a parameter is a short or a char, |
1591 | it is really an int. */ |
1592 | struct type *temptype; |
1593 | temptype = |
1594 | lookup_fundamental_type (current_objfile, FT_INTEGER8); |
1595 | if (TYPE_LENGTH (SYMBOL_TYPE (sym))((sym)->type)->length < TYPE_LENGTH (temptype)(temptype)->length |
1596 | && TYPE_CODE (SYMBOL_TYPE (sym))((sym)->type)->main_type->code == TYPE_CODE_INT) |
1597 | { |
1598 | SYMBOL_TYPE (sym)(sym)->type = |
1599 | (TYPE_UNSIGNED (SYMBOL_TYPE (sym))(((sym)->type)->main_type->flags & (1 << 0 )) |
1600 | ? lookup_fundamental_type (current_objfile, |
1601 | FT_UNSIGNED_INTEGER10) |
1602 | : temptype); |
1603 | } |
1604 | } |
1605 | #endif |
1606 | break; |
1607 | |
1608 | case C_TPDEF13: |
1609 | SYMBOL_CLASS (sym)(sym)->aclass = LOC_TYPEDEF; |
1610 | SYMBOL_DOMAIN (sym)(sym)->domain = VAR_DOMAIN; |
1611 | |
1612 | /* If type has no name, give it one */ |
1613 | if (TYPE_NAME (SYMBOL_TYPE (sym))((sym)->type)->main_type->name == 0) |
1614 | { |
1615 | if (TYPE_CODE (SYMBOL_TYPE (sym))((sym)->type)->main_type->code == TYPE_CODE_PTR |
1616 | || TYPE_CODE (SYMBOL_TYPE (sym))((sym)->type)->main_type->code == TYPE_CODE_FUNC) |
1617 | { |
1618 | /* If we are giving a name to a type such as "pointer to |
1619 | foo" or "function returning foo", we better not set |
1620 | the TYPE_NAME. If the program contains "typedef char |
1621 | *caddr_t;", we don't want all variables of type char |
1622 | * to print as caddr_t. This is not just a |
1623 | consequence of GDB's type management; CC and GCC (at |
1624 | least through version 2.4) both output variables of |
1625 | either type char * or caddr_t with the type |
1626 | refering to the C_TPDEF symbol for caddr_t. If a future |
1627 | compiler cleans this up it GDB is not ready for it |
1628 | yet, but if it becomes ready we somehow need to |
1629 | disable this check (without breaking the PCC/GCC2.4 |
1630 | case). |
1631 | |
1632 | Sigh. |
1633 | |
1634 | Fortunately, this check seems not to be necessary |
1635 | for anything except pointers or functions. */ |
1636 | ; |
1637 | } |
1638 | else |
1639 | TYPE_NAME (SYMBOL_TYPE (sym))((sym)->type)->main_type->name = |
1640 | concat (DEPRECATED_SYMBOL_NAME (sym)(sym)->ginfo.name, NULL((void*)0)); |
1641 | } |
1642 | |
1643 | /* Keep track of any type which points to empty structured type, |
1644 | so it can be filled from a definition from another file. A |
1645 | simple forward reference (TYPE_CODE_UNDEF) is not an |
1646 | empty structured type, though; the forward references |
1647 | work themselves out via the magic of coff_lookup_type. */ |
1648 | if (TYPE_CODE (SYMBOL_TYPE (sym))((sym)->type)->main_type->code == TYPE_CODE_PTR && |
1649 | TYPE_LENGTH (TYPE_TARGET_TYPE (SYMBOL_TYPE (sym)))(((sym)->type)->main_type->target_type)->length == 0 && |
1650 | TYPE_CODE (TYPE_TARGET_TYPE (SYMBOL_TYPE (sym)))(((sym)->type)->main_type->target_type)->main_type ->code != |
1651 | TYPE_CODE_UNDEF) |
1652 | { |
1653 | int i = hashname (DEPRECATED_SYMBOL_NAME (sym)(sym)->ginfo.name); |
1654 | |
1655 | SYMBOL_VALUE_CHAIN (sym)(sym)->ginfo.value.chain = opaque_type_chain[i]; |
1656 | opaque_type_chain[i] = sym; |
1657 | } |
1658 | add_symbol_to_list (sym, &file_symbols); |
1659 | break; |
1660 | |
1661 | case C_STRTAG10: |
1662 | case C_UNTAG12: |
1663 | case C_ENTAG15: |
1664 | SYMBOL_CLASS (sym)(sym)->aclass = LOC_TYPEDEF; |
1665 | SYMBOL_DOMAIN (sym)(sym)->domain = STRUCT_DOMAIN; |
1666 | |
1667 | /* Some compilers try to be helpful by inventing "fake" |
1668 | names for anonymous enums, structures, and unions, like |
1669 | "~0fake" or ".0fake". Thanks, but no thanks... */ |
1670 | if (TYPE_TAG_NAME (SYMBOL_TYPE (sym))((sym)->type)->main_type->tag_name == 0) |
1671 | if (DEPRECATED_SYMBOL_NAME (sym)(sym)->ginfo.name != NULL((void*)0) |
1672 | && *DEPRECATED_SYMBOL_NAME (sym)(sym)->ginfo.name != '~' |
1673 | && *DEPRECATED_SYMBOL_NAME (sym)(sym)->ginfo.name != '.') |
1674 | TYPE_TAG_NAME (SYMBOL_TYPE (sym))((sym)->type)->main_type->tag_name = |
1675 | concat (DEPRECATED_SYMBOL_NAME (sym)(sym)->ginfo.name, NULL((void*)0)); |
1676 | |
1677 | add_symbol_to_list (sym, &file_symbols); |
1678 | break; |
1679 | |
1680 | default: |
1681 | break; |
1682 | } |
1683 | } |
1684 | return sym; |
1685 | } |
1686 | |
1687 | /* Decode a coff type specifier; return the type that is meant. */ |
1688 | |
1689 | static struct type * |
1690 | decode_type (struct coff_symbol *cs, unsigned int c_type, |
1691 | union internal_auxent *aux) |
1692 | { |
1693 | struct type *type = 0; |
1694 | unsigned int new_c_type; |
1695 | |
1696 | if (c_type & ~N_BTMASKlocal_n_btmask) |
1697 | { |
1698 | new_c_type = DECREF (c_type)((((c_type) >> local_n_tshift) & ~ local_n_btmask) | ((c_type) & local_n_btmask)); |
1699 | if (ISPTR (c_type)(((unsigned long) (c_type) & local_n_tmask) == ((unsigned long) (1) << local_n_btshft))) |
1700 | { |
1701 | type = decode_type (cs, new_c_type, aux); |
1702 | type = lookup_pointer_type (type); |
1703 | } |
1704 | else if (ISFCN (c_type)(((unsigned long) (c_type) & local_n_tmask) == ((unsigned long) (2) << local_n_btshft))) |
1705 | { |
1706 | type = decode_type (cs, new_c_type, aux); |
1707 | type = lookup_function_type (type); |
1708 | } |
1709 | else if (ISARY (c_type)(((unsigned long) (c_type) & local_n_tmask) == ((unsigned long) (3) << local_n_btshft))) |
1710 | { |
1711 | int i, n; |
1712 | unsigned short *dim; |
1713 | struct type *base_type, *index_type, *range_type; |
1714 | |
1715 | /* Define an array type. */ |
1716 | /* auxent refers to array, not base type */ |
1717 | if (aux->x_sym.x_tagndx.l == 0) |
1718 | cs->c_naux = 0; |
1719 | |
1720 | /* shift the indices down */ |
1721 | dim = &aux->x_sym.x_fcnary.x_ary.x_dimen[0]; |
1722 | i = 1; |
Value stored to 'i' is never read | |
1723 | n = dim[0]; |
1724 | for (i = 0; *dim && i < DIMNUM4 - 1; i++, dim++) |
1725 | *dim = *(dim + 1); |
1726 | *dim = 0; |
1727 | |
1728 | base_type = decode_type (cs, new_c_type, aux); |
1729 | index_type = lookup_fundamental_type (current_objfile, FT_INTEGER8); |
1730 | range_type = |
1731 | create_range_type ((struct type *) NULL((void*)0), index_type, 0, n - 1); |
1732 | type = |
1733 | create_array_type ((struct type *) NULL((void*)0), base_type, range_type); |
1734 | } |
1735 | return type; |
1736 | } |
1737 | |
1738 | /* Reference to existing type. This only occurs with the |
1739 | struct, union, and enum types. EPI a29k coff |
1740 | fakes us out by producing aux entries with a nonzero |
1741 | x_tagndx for definitions of structs, unions, and enums, so we |
1742 | have to check the c_sclass field. SCO 3.2v4 cc gets confused |
1743 | with pointers to pointers to defined structs, and generates |
1744 | negative x_tagndx fields. */ |
1745 | if (cs->c_naux > 0 && aux->x_sym.x_tagndx.l != 0) |
1746 | { |
1747 | if (cs->c_sclass != C_STRTAG10 |
1748 | && cs->c_sclass != C_UNTAG12 |
1749 | && cs->c_sclass != C_ENTAG15 |
1750 | && aux->x_sym.x_tagndx.l >= 0) |
1751 | { |
1752 | type = coff_alloc_type (aux->x_sym.x_tagndx.l); |
1753 | return type; |
1754 | } |
1755 | else |
1756 | { |
1757 | complaint (&symfile_complaints, |
1758 | "Symbol table entry for %s has bad tagndx value", |
1759 | cs->c_name); |
1760 | /* And fall through to decode_base_type... */ |
1761 | } |
1762 | } |
1763 | |
1764 | return decode_base_type (cs, BTYPE (c_type)((c_type) & local_n_btmask), aux); |
1765 | } |
1766 | |
1767 | /* Decode a coff type specifier for function definition; |
1768 | return the type that the function returns. */ |
1769 | |
1770 | static struct type * |
1771 | decode_function_type (struct coff_symbol *cs, unsigned int c_type, |
1772 | union internal_auxent *aux) |
1773 | { |
1774 | if (aux->x_sym.x_tagndx.l == 0) |
1775 | cs->c_naux = 0; /* auxent refers to function, not base type */ |
1776 | |
1777 | return decode_type (cs, DECREF (c_type)((((c_type) >> local_n_tshift) & ~ local_n_btmask) | ((c_type) & local_n_btmask)), aux); |
1778 | } |
1779 | |
1780 | /* basic C types */ |
1781 | |
1782 | static struct type * |
1783 | decode_base_type (struct coff_symbol *cs, unsigned int c_type, |
1784 | union internal_auxent *aux) |
1785 | { |
1786 | struct type *type; |
1787 | |
1788 | switch (c_type) |
1789 | { |
1790 | case T_NULL0: |
1791 | /* shows up with "void (*foo)();" structure members */ |
1792 | return lookup_fundamental_type (current_objfile, FT_VOID0); |
1793 | |
1794 | #ifdef T_VOID1 |
1795 | case T_VOID1: |
1796 | /* Intel 960 COFF has this symbol and meaning. */ |
1797 | return lookup_fundamental_type (current_objfile, FT_VOID0); |
1798 | #endif |
1799 | |
1800 | case T_CHAR2: |
1801 | return lookup_fundamental_type (current_objfile, FT_CHAR2); |
1802 | |
1803 | case T_SHORT3: |
1804 | return lookup_fundamental_type (current_objfile, FT_SHORT5); |
1805 | |
1806 | case T_INT4: |
1807 | return lookup_fundamental_type (current_objfile, FT_INTEGER8); |
1808 | |
1809 | case T_LONG5: |
1810 | if (cs->c_sclass == C_FIELD18 |
1811 | && aux->x_sym.x_misc.x_lnsz.x_size > TARGET_LONG_BIT(gdbarch_long_bit (current_gdbarch))) |
1812 | return lookup_fundamental_type (current_objfile, FT_LONG_LONG14); |
1813 | else |
1814 | return lookup_fundamental_type (current_objfile, FT_LONG11); |
1815 | |
1816 | case T_FLOAT6: |
1817 | return lookup_fundamental_type (current_objfile, FT_FLOAT17); |
1818 | |
1819 | case T_DOUBLE7: |
1820 | return lookup_fundamental_type (current_objfile, FT_DBL_PREC_FLOAT18); |
1821 | |
1822 | case T_LNGDBL16: |
1823 | return lookup_fundamental_type (current_objfile, FT_EXT_PREC_FLOAT19); |
1824 | |
1825 | case T_STRUCT8: |
1826 | if (cs->c_naux != 1) |
1827 | { |
1828 | /* anonymous structure type */ |
1829 | type = coff_alloc_type (cs->c_symnum); |
1830 | TYPE_CODE (type)(type)->main_type->code = TYPE_CODE_STRUCT; |
1831 | TYPE_NAME (type)(type)->main_type->name = NULL((void*)0); |
1832 | /* This used to set the tag to "<opaque>". But I think setting it |
1833 | to NULL is right, and the printing code can print it as |
1834 | "struct {...}". */ |
1835 | TYPE_TAG_NAME (type)(type)->main_type->tag_name = NULL((void*)0); |
1836 | INIT_CPLUS_SPECIFIC (type)((type)->main_type->type_specific.cplus_stuff=(struct cplus_struct_type *)&cplus_struct_default); |
1837 | TYPE_LENGTH (type)(type)->length = 0; |
1838 | TYPE_FIELDS (type)(type)->main_type->fields = 0; |
1839 | TYPE_NFIELDS (type)(type)->main_type->nfields = 0; |
1840 | } |
1841 | else |
1842 | { |
1843 | type = coff_read_struct_type (cs->c_symnum, |
1844 | aux->x_sym.x_misc.x_lnsz.x_size, |
1845 | aux->x_sym.x_fcnary.x_fcn.x_endndx.l); |
1846 | } |
1847 | return type; |
1848 | |
1849 | case T_UNION9: |
1850 | if (cs->c_naux != 1) |
1851 | { |
1852 | /* anonymous union type */ |
1853 | type = coff_alloc_type (cs->c_symnum); |
1854 | TYPE_NAME (type)(type)->main_type->name = NULL((void*)0); |
1855 | /* This used to set the tag to "<opaque>". But I think setting it |
1856 | to NULL is right, and the printing code can print it as |
1857 | "union {...}". */ |
1858 | TYPE_TAG_NAME (type)(type)->main_type->tag_name = NULL((void*)0); |
1859 | INIT_CPLUS_SPECIFIC (type)((type)->main_type->type_specific.cplus_stuff=(struct cplus_struct_type *)&cplus_struct_default); |
1860 | TYPE_LENGTH (type)(type)->length = 0; |
1861 | TYPE_FIELDS (type)(type)->main_type->fields = 0; |
1862 | TYPE_NFIELDS (type)(type)->main_type->nfields = 0; |
1863 | } |
1864 | else |
1865 | { |
1866 | type = coff_read_struct_type (cs->c_symnum, |
1867 | aux->x_sym.x_misc.x_lnsz.x_size, |
1868 | aux->x_sym.x_fcnary.x_fcn.x_endndx.l); |
1869 | } |
1870 | TYPE_CODE (type)(type)->main_type->code = TYPE_CODE_UNION; |
1871 | return type; |
1872 | |
1873 | case T_ENUM10: |
1874 | if (cs->c_naux != 1) |
1875 | { |
1876 | /* anonymous enum type */ |
1877 | type = coff_alloc_type (cs->c_symnum); |
1878 | TYPE_CODE (type)(type)->main_type->code = TYPE_CODE_ENUM; |
1879 | TYPE_NAME (type)(type)->main_type->name = NULL((void*)0); |
1880 | /* This used to set the tag to "<opaque>". But I think setting it |
1881 | to NULL is right, and the printing code can print it as |
1882 | "enum {...}". */ |
1883 | TYPE_TAG_NAME (type)(type)->main_type->tag_name = NULL((void*)0); |
1884 | TYPE_LENGTH (type)(type)->length = 0; |
1885 | TYPE_FIELDS (type)(type)->main_type->fields = 0; |
1886 | TYPE_NFIELDS (type)(type)->main_type->nfields = 0; |
1887 | } |
1888 | else |
1889 | { |
1890 | type = coff_read_enum_type (cs->c_symnum, |
1891 | aux->x_sym.x_misc.x_lnsz.x_size, |
1892 | aux->x_sym.x_fcnary.x_fcn.x_endndx.l); |
1893 | } |
1894 | return type; |
1895 | |
1896 | case T_MOE11: |
1897 | /* shouldn't show up here */ |
1898 | break; |
1899 | |
1900 | case T_UCHAR12: |
1901 | return lookup_fundamental_type (current_objfile, FT_UNSIGNED_CHAR4); |
1902 | |
1903 | case T_USHORT13: |
1904 | return lookup_fundamental_type (current_objfile, FT_UNSIGNED_SHORT7); |
1905 | |
1906 | case T_UINT14: |
1907 | return lookup_fundamental_type (current_objfile, FT_UNSIGNED_INTEGER10); |
1908 | |
1909 | case T_ULONG15: |
1910 | if (cs->c_sclass == C_FIELD18 |
1911 | && aux->x_sym.x_misc.x_lnsz.x_size > TARGET_LONG_BIT(gdbarch_long_bit (current_gdbarch))) |
1912 | return lookup_fundamental_type (current_objfile, FT_UNSIGNED_LONG_LONG16); |
1913 | else |
1914 | return lookup_fundamental_type (current_objfile, FT_UNSIGNED_LONG13); |
1915 | } |
1916 | complaint (&symfile_complaints, "Unexpected type for symbol %s", cs->c_name); |
1917 | return lookup_fundamental_type (current_objfile, FT_VOID0); |
1918 | } |
1919 | |
1920 | /* This page contains subroutines of read_type. */ |
1921 | |
1922 | /* Read the description of a structure (or union type) and return an |
1923 | object describing the type. */ |
1924 | |
1925 | static struct type * |
1926 | coff_read_struct_type (int index, int length, int lastsym) |
1927 | { |
1928 | struct nextfield |
1929 | { |
1930 | struct nextfield *next; |
1931 | struct field field; |
1932 | }; |
1933 | |
1934 | struct type *type; |
1935 | struct nextfield *list = 0; |
1936 | struct nextfield *new; |
1937 | int nfields = 0; |
1938 | int n; |
1939 | char *name; |
1940 | struct coff_symbol member_sym; |
1941 | struct coff_symbol *ms = &member_sym; |
1942 | struct internal_syment sub_sym; |
1943 | union internal_auxent sub_aux; |
1944 | int done = 0; |
1945 | |
1946 | type = coff_alloc_type (index); |
1947 | TYPE_CODE (type)(type)->main_type->code = TYPE_CODE_STRUCT; |
1948 | INIT_CPLUS_SPECIFIC (type)((type)->main_type->type_specific.cplus_stuff=(struct cplus_struct_type *)&cplus_struct_default); |
1949 | TYPE_LENGTH (type)(type)->length = length; |
1950 | |
1951 | while (!done && symnum < lastsym && symnum < nlist_nsyms_global) |
1952 | { |
1953 | read_one_sym (ms, &sub_sym, &sub_aux); |
1954 | name = ms->c_name; |
1955 | name = EXTERNAL_NAME (name, current_objfile->obfd)(name[0] == ((current_objfile->obfd)->xvec->symbol_leading_char )? name+1: name); |
1956 | |
1957 | switch (ms->c_sclass) |
1958 | { |
1959 | case C_MOS8: |
1960 | case C_MOU11: |
1961 | |
1962 | /* Get space to record the next field's data. */ |
1963 | new = (struct nextfield *) alloca (sizeof (struct nextfield))__builtin_alloca(sizeof (struct nextfield)); |
1964 | new->next = list; |
1965 | list = new; |
1966 | |
1967 | /* Save the data. */ |
1968 | list->field.name = |
1969 | obsavestring (name, |
1970 | strlen (name), |
1971 | ¤t_objfile->objfile_obstack); |
1972 | FIELD_TYPE (list->field)((list->field).type) = decode_type (ms, ms->c_type, &sub_aux); |
1973 | FIELD_BITPOS (list->field)((list->field).loc.bitpos) = 8 * ms->c_value; |
1974 | FIELD_BITSIZE (list->field)((list->field).bitsize) = 0; |
1975 | FIELD_STATIC_KIND (list->field)((list->field).static_kind) = 0; |
1976 | nfields++; |
1977 | break; |
1978 | |
1979 | case C_FIELD18: |
1980 | |
1981 | /* Get space to record the next field's data. */ |
1982 | new = (struct nextfield *) alloca (sizeof (struct nextfield))__builtin_alloca(sizeof (struct nextfield)); |
1983 | new->next = list; |
1984 | list = new; |
1985 | |
1986 | /* Save the data. */ |
1987 | list->field.name = |
1988 | obsavestring (name, |
1989 | strlen (name), |
1990 | ¤t_objfile->objfile_obstack); |
1991 | FIELD_TYPE (list->field)((list->field).type) = decode_type (ms, ms->c_type, &sub_aux); |
1992 | FIELD_BITPOS (list->field)((list->field).loc.bitpos) = ms->c_value; |
1993 | FIELD_BITSIZE (list->field)((list->field).bitsize) = sub_aux.x_sym.x_misc.x_lnsz.x_size; |
1994 | FIELD_STATIC_KIND (list->field)((list->field).static_kind) = 0; |
1995 | nfields++; |
1996 | break; |
1997 | |
1998 | case C_EOS102: |
1999 | done = 1; |
2000 | break; |
2001 | } |
2002 | } |
2003 | /* Now create the vector of fields, and record how big it is. */ |
2004 | |
2005 | TYPE_NFIELDS (type)(type)->main_type->nfields = nfields; |
2006 | TYPE_FIELDS (type)(type)->main_type->fields = (struct field *) |
2007 | TYPE_ALLOC (type, sizeof (struct field) * nfields)((type)->main_type->objfile != ((void*)0) ? __extension__ ({ struct obstack *__h = (&(type)->main_type->objfile -> objfile_obstack); __extension__ ({ struct obstack *__o = (__h); int __len = ((sizeof (struct field) * nfields)); if (__o->chunk_limit - __o->next_free < __len) _obstack_newchunk (__o, __len); ((__o)->next_free += (__len)); (void) 0; }) ; __extension__ ({ struct obstack *__o1 = (__h); void *value; value = (void *) __o1->object_base; if (__o1->next_free == value) __o1->maybe_empty_object = 1; __o1->next_free = (((((__o1->next_free) - (char *) 0)+__o1->alignment_mask ) & ~ (__o1->alignment_mask)) + (char *) 0); if (__o1-> next_free - (char *)__o1->chunk > __o1->chunk_limit - (char *)__o1->chunk) __o1->next_free = __o1->chunk_limit ; __o1->object_base = __o1->next_free; value; }); }) : xmalloc (sizeof (struct field) * nfields)); |
2008 | |
2009 | /* Copy the saved-up fields into the field vector. */ |
2010 | |
2011 | for (n = nfields; list; list = list->next) |
2012 | TYPE_FIELD (type, --n)(type)->main_type->fields[--n] = list->field; |
2013 | |
2014 | return type; |
2015 | } |
2016 | |
2017 | /* Read a definition of an enumeration type, |
2018 | and create and return a suitable type object. |
2019 | Also defines the symbols that represent the values of the type. */ |
2020 | |
2021 | static struct type * |
2022 | coff_read_enum_type (int index, int length, int lastsym) |
2023 | { |
2024 | struct symbol *sym; |
2025 | struct type *type; |
2026 | int nsyms = 0; |
2027 | int done = 0; |
2028 | struct pending **symlist; |
2029 | struct coff_symbol member_sym; |
2030 | struct coff_symbol *ms = &member_sym; |
2031 | struct internal_syment sub_sym; |
2032 | union internal_auxent sub_aux; |
2033 | struct pending *osyms, *syms; |
2034 | int o_nsyms; |
2035 | int n; |
2036 | char *name; |
2037 | int unsigned_enum = 1; |
2038 | |
2039 | type = coff_alloc_type (index); |
2040 | if (within_function) |
2041 | symlist = &local_symbols; |
2042 | else |
2043 | symlist = &file_symbols; |
2044 | osyms = *symlist; |
2045 | o_nsyms = osyms ? osyms->nsyms : 0; |
2046 | |
2047 | while (!done && symnum < lastsym && symnum < nlist_nsyms_global) |
2048 | { |
2049 | read_one_sym (ms, &sub_sym, &sub_aux); |
2050 | name = ms->c_name; |
2051 | name = EXTERNAL_NAME (name, current_objfile->obfd)(name[0] == ((current_objfile->obfd)->xvec->symbol_leading_char )? name+1: name); |
2052 | |
2053 | switch (ms->c_sclass) |
2054 | { |
2055 | case C_MOE16: |
2056 | sym = (struct symbol *) obstack_alloc__extension__ ({ struct obstack *__h = (¤t_objfile-> objfile_obstack); __extension__ ({ struct obstack *__o = (__h ); int __len = ((sizeof (struct symbol))); if (__o->chunk_limit - __o->next_free < __len) _obstack_newchunk (__o, __len ); ((__o)->next_free += (__len)); (void) 0; }); __extension__ ({ struct obstack *__o1 = (__h); void *value; value = (void * ) __o1->object_base; if (__o1->next_free == value) __o1 ->maybe_empty_object = 1; __o1->next_free = (((((__o1-> next_free) - (char *) 0)+__o1->alignment_mask) & ~ (__o1 ->alignment_mask)) + (char *) 0); if (__o1->next_free - (char *)__o1->chunk > __o1->chunk_limit - (char *)__o1 ->chunk) __o1->next_free = __o1->chunk_limit; __o1-> object_base = __o1->next_free; value; }); }) |
2057 | (¤t_objfile->objfile_obstack,__extension__ ({ struct obstack *__h = (¤t_objfile-> objfile_obstack); __extension__ ({ struct obstack *__o = (__h ); int __len = ((sizeof (struct symbol))); if (__o->chunk_limit - __o->next_free < __len) _obstack_newchunk (__o, __len ); ((__o)->next_free += (__len)); (void) 0; }); __extension__ ({ struct obstack *__o1 = (__h); void *value; value = (void * ) __o1->object_base; if (__o1->next_free == value) __o1 ->maybe_empty_object = 1; __o1->next_free = (((((__o1-> next_free) - (char *) 0)+__o1->alignment_mask) & ~ (__o1 ->alignment_mask)) + (char *) 0); if (__o1->next_free - (char *)__o1->chunk > __o1->chunk_limit - (char *)__o1 ->chunk) __o1->next_free = __o1->chunk_limit; __o1-> object_base = __o1->next_free; value; }); }) |
2058 | sizeof (struct symbol))__extension__ ({ struct obstack *__h = (¤t_objfile-> objfile_obstack); __extension__ ({ struct obstack *__o = (__h ); int __len = ((sizeof (struct symbol))); if (__o->chunk_limit - __o->next_free < __len) _obstack_newchunk (__o, __len ); ((__o)->next_free += (__len)); (void) 0; }); __extension__ ({ struct obstack *__o1 = (__h); void *value; value = (void * ) __o1->object_base; if (__o1->next_free == value) __o1 ->maybe_empty_object = 1; __o1->next_free = (((((__o1-> next_free) - (char *) 0)+__o1->alignment_mask) & ~ (__o1 ->alignment_mask)) + (char *) 0); if (__o1->next_free - (char *)__o1->chunk > __o1->chunk_limit - (char *)__o1 ->chunk) __o1->next_free = __o1->chunk_limit; __o1-> object_base = __o1->next_free; value; }); }); |
2059 | memset (sym, 0, sizeof (struct symbol)); |
2060 | |
2061 | DEPRECATED_SYMBOL_NAME (sym)(sym)->ginfo.name = |
2062 | obsavestring (name, strlen (name), |
2063 | ¤t_objfile->objfile_obstack); |
2064 | SYMBOL_CLASS (sym)(sym)->aclass = LOC_CONST; |
2065 | SYMBOL_DOMAIN (sym)(sym)->domain = VAR_DOMAIN; |
2066 | SYMBOL_VALUE (sym)(sym)->ginfo.value.ivalue = ms->c_value; |
2067 | add_symbol_to_list (sym, symlist); |
2068 | nsyms++; |
2069 | break; |
2070 | |
2071 | case C_EOS102: |
2072 | /* Sometimes the linker (on 386/ix 2.0.2 at least) screws |
2073 | up the count of how many symbols to read. So stop |
2074 | on .eos. */ |
2075 | done = 1; |
2076 | break; |
2077 | } |
2078 | } |
2079 | |
2080 | /* Now fill in the fields of the type-structure. */ |
2081 | |
2082 | if (length > 0) |
2083 | TYPE_LENGTH (type)(type)->length = length; |
2084 | else |
2085 | TYPE_LENGTH (type)(type)->length = TARGET_INT_BIT(gdbarch_int_bit (current_gdbarch)) / TARGET_CHAR_BIT8; /* Assume ints */ |
2086 | TYPE_CODE (type)(type)->main_type->code = TYPE_CODE_ENUM; |
2087 | TYPE_NFIELDS (type)(type)->main_type->nfields = nsyms; |
2088 | TYPE_FIELDS (type)(type)->main_type->fields = (struct field *) |
2089 | TYPE_ALLOC (type, sizeof (struct field) * nsyms)((type)->main_type->objfile != ((void*)0) ? __extension__ ({ struct obstack *__h = (&(type)->main_type->objfile -> objfile_obstack); __extension__ ({ struct obstack *__o = (__h); int __len = ((sizeof (struct field) * nsyms)); if ( __o->chunk_limit - __o->next_free < __len) _obstack_newchunk (__o, __len); ((__o)->next_free += (__len)); (void) 0; }) ; __extension__ ({ struct obstack *__o1 = (__h); void *value; value = (void *) __o1->object_base; if (__o1->next_free == value) __o1->maybe_empty_object = 1; __o1->next_free = (((((__o1->next_free) - (char *) 0)+__o1->alignment_mask ) & ~ (__o1->alignment_mask)) + (char *) 0); if (__o1-> next_free - (char *)__o1->chunk > __o1->chunk_limit - (char *)__o1->chunk) __o1->next_free = __o1->chunk_limit ; __o1->object_base = __o1->next_free; value; }); }) : xmalloc (sizeof (struct field) * nsyms)); |
2090 | |
2091 | /* Find the symbols for the values and put them into the type. |
2092 | The symbols can be found in the symlist that we put them on |
2093 | to cause them to be defined. osyms contains the old value |
2094 | of that symlist; everything up to there was defined by us. */ |
2095 | /* Note that we preserve the order of the enum constants, so |
2096 | that in something like "enum {FOO, LAST_THING=FOO}" we print |
2097 | FOO, not LAST_THING. */ |
2098 | |
2099 | for (syms = *symlist, n = 0; syms; syms = syms->next) |
2100 | { |
2101 | int j = 0; |
2102 | |
2103 | if (syms == osyms) |
2104 | j = o_nsyms; |
2105 | for (; j < syms->nsyms; j++, n++) |
2106 | { |
2107 | struct symbol *xsym = syms->symbol[j]; |
2108 | SYMBOL_TYPE (xsym)(xsym)->type = type; |
2109 | TYPE_FIELD_NAME (type, n)(((type)->main_type->fields[n]).name) = DEPRECATED_SYMBOL_NAME (xsym)(xsym)->ginfo.name; |
2110 | TYPE_FIELD_BITPOS (type, n)(((type)->main_type->fields[n]).loc.bitpos) = SYMBOL_VALUE (xsym)(xsym)->ginfo.value.ivalue; |
2111 | if (SYMBOL_VALUE (xsym)(xsym)->ginfo.value.ivalue < 0) |
2112 | unsigned_enum = 0; |
2113 | TYPE_FIELD_BITSIZE (type, n)(((type)->main_type->fields[n]).bitsize) = 0; |
2114 | TYPE_FIELD_STATIC_KIND (type, n)(type)->main_type->fields[n].static_kind = 0; |
2115 | } |
2116 | if (syms == osyms) |
2117 | break; |
2118 | } |
2119 | |
2120 | if (unsigned_enum) |
2121 | TYPE_FLAGS (type)(type)->main_type->flags |= TYPE_FLAG_UNSIGNED(1 << 0); |
2122 | |
2123 | return type; |
2124 | } |
2125 | |
2126 | /* Register our ability to parse symbols for coff BFD files. */ |
2127 | |
2128 | static struct sym_fns coff_sym_fns = |
2129 | { |
2130 | bfd_target_coff_flavour, |
2131 | coff_new_init, /* sym_new_init: init anything gbl to entire symtab */ |
2132 | coff_symfile_init, /* sym_init: read initial info, setup for sym_read() */ |
2133 | coff_symfile_read, /* sym_read: read a symbol file into symtab */ |
2134 | coff_symfile_finish, /* sym_finish: finished with file, cleanup */ |
2135 | default_symfile_offsets, /* sym_offsets: xlate external to internal form */ |
2136 | NULL((void*)0) /* next: pointer to next struct sym_fns */ |
2137 | }; |
2138 | |
2139 | void |
2140 | _initialize_coffread (void) |
2141 | { |
2142 | add_symtab_fns (&coff_sym_fns); |
2143 | } |