| File: | src/gnu/usr.bin/binutils/gdb/dbxread.c |
| Warning: | line 3334, column 3 Value stored to 'info' is never read |
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| 1 | /* Read dbx symbol tables and convert to internal format, for GDB. |
| 2 | Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, |
| 3 | 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004. |
| 4 | Free Software Foundation, Inc. |
| 5 | |
| 6 | This file is part of GDB. |
| 7 | |
| 8 | This program is free software; you can redistribute it and/or modify |
| 9 | it under the terms of the GNU General Public License as published by |
| 10 | the Free Software Foundation; either version 2 of the License, or |
| 11 | (at your option) any later version. |
| 12 | |
| 13 | This program is distributed in the hope that it will be useful, |
| 14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | GNU General Public License for more details. |
| 17 | |
| 18 | You should have received a copy of the GNU General Public License |
| 19 | along with this program; if not, write to the Free Software |
| 20 | Foundation, Inc., 59 Temple Place - Suite 330, |
| 21 | Boston, MA 02111-1307, USA. */ |
| 22 | |
| 23 | /* This module provides three functions: dbx_symfile_init, |
| 24 | which initializes to read a symbol file; dbx_new_init, which |
| 25 | discards existing cached information when all symbols are being |
| 26 | discarded; and dbx_symfile_read, which reads a symbol table |
| 27 | from a file. |
| 28 | |
| 29 | dbx_symfile_read only does the minimum work necessary for letting the |
| 30 | user "name" things symbolically; it does not read the entire symtab. |
| 31 | Instead, it reads the external and static symbols and puts them in partial |
| 32 | symbol tables. When more extensive information is requested of a |
| 33 | file, the corresponding partial symbol table is mutated into a full |
| 34 | fledged symbol table by going back and reading the symbols |
| 35 | for real. dbx_psymtab_to_symtab() is the function that does this */ |
| 36 | |
| 37 | #include "defs.h" |
| 38 | #include "gdb_string.h" |
| 39 | |
| 40 | #if defined(__CYGNUSCLIB__) |
| 41 | #include <sys/types.h> |
| 42 | #include <fcntl.h> |
| 43 | #endif |
| 44 | |
| 45 | #include "gdb_obstack.h" |
| 46 | #include "gdb_stat.h" |
| 47 | #include "symtab.h" |
| 48 | #include "breakpoint.h" |
| 49 | #include "target.h" |
| 50 | #include "gdbcore.h" /* for bfd stuff */ |
| 51 | #include "libaout.h" /* FIXME Secret internal BFD stuff for a.out */ |
| 52 | #include "objfiles.h" |
| 53 | #include "buildsym.h" |
| 54 | #include "stabsread.h" |
| 55 | #include "gdb-stabs.h" |
| 56 | #include "demangle.h" |
| 57 | #include "complaints.h" |
| 58 | #include "cp-abi.h" |
| 59 | #include "gdb_assert.h" |
| 60 | |
| 61 | #include "aout/aout64.h" |
| 62 | #include "aout/stab_gnu.h" /* We always use GNU stabs, not native, now */ |
| 63 | |
| 64 | |
| 65 | /* We put a pointer to this structure in the read_symtab_private field |
| 66 | of the psymtab. */ |
| 67 | |
| 68 | struct symloc |
| 69 | { |
| 70 | /* Offset within the file symbol table of first local symbol for this |
| 71 | file. */ |
| 72 | |
| 73 | int ldsymoff; |
| 74 | |
| 75 | /* Length (in bytes) of the section of the symbol table devoted to |
| 76 | this file's symbols (actually, the section bracketed may contain |
| 77 | more than just this file's symbols). If ldsymlen is 0, the only |
| 78 | reason for this thing's existence is the dependency list. Nothing |
| 79 | else will happen when it is read in. */ |
| 80 | |
| 81 | int ldsymlen; |
| 82 | |
| 83 | /* The size of each symbol in the symbol file (in external form). */ |
| 84 | |
| 85 | int symbol_size; |
| 86 | |
| 87 | /* Further information needed to locate the symbols if they are in |
| 88 | an ELF file. */ |
| 89 | |
| 90 | int symbol_offset; |
| 91 | int string_offset; |
| 92 | int file_string_offset; |
| 93 | }; |
| 94 | |
| 95 | #define LDSYMOFF(p)(((struct symloc *)((p)->read_symtab_private))->ldsymoff ) (((struct symloc *)((p)->read_symtab_private))->ldsymoff) |
| 96 | #define LDSYMLEN(p)(((struct symloc *)((p)->read_symtab_private))->ldsymlen ) (((struct symloc *)((p)->read_symtab_private))->ldsymlen) |
| 97 | #define SYMLOC(p)((struct symloc *)((p)->read_symtab_private)) ((struct symloc *)((p)->read_symtab_private)) |
| 98 | #define SYMBOL_SIZE(p)(((struct symloc *)((p)->read_symtab_private))->symbol_size ) (SYMLOC(p)((struct symloc *)((p)->read_symtab_private))->symbol_size) |
| 99 | #define SYMBOL_OFFSET(p)(((struct symloc *)((p)->read_symtab_private))->symbol_offset ) (SYMLOC(p)((struct symloc *)((p)->read_symtab_private))->symbol_offset) |
| 100 | #define STRING_OFFSET(p)(((struct symloc *)((p)->read_symtab_private))->string_offset ) (SYMLOC(p)((struct symloc *)((p)->read_symtab_private))->string_offset) |
| 101 | #define FILE_STRING_OFFSET(p)(((struct symloc *)((p)->read_symtab_private))->file_string_offset ) (SYMLOC(p)((struct symloc *)((p)->read_symtab_private))->file_string_offset) |
| 102 | |
| 103 | |
| 104 | /* Remember what we deduced to be the source language of this psymtab. */ |
| 105 | |
| 106 | static enum language psymtab_language = language_unknown; |
| 107 | |
| 108 | /* The BFD for this file -- implicit parameter to next_symbol_text. */ |
| 109 | |
| 110 | static bfd *symfile_bfd; |
| 111 | |
| 112 | /* The size of each symbol in the symbol file (in external form). |
| 113 | This is set by dbx_symfile_read when building psymtabs, and by |
| 114 | dbx_psymtab_to_symtab when building symtabs. */ |
| 115 | |
| 116 | static unsigned symbol_size; |
| 117 | |
| 118 | /* This is the offset of the symbol table in the executable file. */ |
| 119 | |
| 120 | static unsigned symbol_table_offset; |
| 121 | |
| 122 | /* This is the offset of the string table in the executable file. */ |
| 123 | |
| 124 | static unsigned string_table_offset; |
| 125 | |
| 126 | /* For elf+stab executables, the n_strx field is not a simple index |
| 127 | into the string table. Instead, each .o file has a base offset in |
| 128 | the string table, and the associated symbols contain offsets from |
| 129 | this base. The following two variables contain the base offset for |
| 130 | the current and next .o files. */ |
| 131 | |
| 132 | static unsigned int file_string_table_offset; |
| 133 | static unsigned int next_file_string_table_offset; |
| 134 | |
| 135 | /* .o and NLM files contain unrelocated addresses which are based at |
| 136 | 0. When non-zero, this flag disables some of the special cases for |
| 137 | Solaris elf+stab text addresses at location 0. */ |
| 138 | |
| 139 | static int symfile_relocatable = 0; |
| 140 | |
| 141 | /* If this is nonzero, N_LBRAC, N_RBRAC, and N_SLINE entries are |
| 142 | relative to the function start address. */ |
| 143 | |
| 144 | static int block_address_function_relative = 0; |
| 145 | |
| 146 | /* The lowest text address we have yet encountered. This is needed |
| 147 | because in an a.out file, there is no header field which tells us |
| 148 | what address the program is actually going to be loaded at, so we |
| 149 | need to make guesses based on the symbols (which *are* relocated to |
| 150 | reflect the address it will be loaded at). */ |
| 151 | |
| 152 | static CORE_ADDR lowest_text_address; |
| 153 | |
| 154 | /* Non-zero if there is any line number info in the objfile. Prevents |
| 155 | end_psymtab from discarding an otherwise empty psymtab. */ |
| 156 | |
| 157 | static int has_line_numbers; |
| 158 | |
| 159 | /* Complaints about the symbols we have encountered. */ |
| 160 | |
| 161 | static void |
| 162 | unknown_symtype_complaint (const char *arg1) |
| 163 | { |
| 164 | complaint (&symfile_complaints, "unknown symbol type %s", arg1); |
| 165 | } |
| 166 | |
| 167 | static void |
| 168 | lbrac_mismatch_complaint (int arg1) |
| 169 | { |
| 170 | complaint (&symfile_complaints, |
| 171 | "N_LBRAC/N_RBRAC symbol mismatch at symtab pos %d", arg1); |
| 172 | } |
| 173 | |
| 174 | static void |
| 175 | repeated_header_complaint (const char *arg1, int arg2) |
| 176 | { |
| 177 | complaint (&symfile_complaints, |
| 178 | "\"repeated\" header file %s not previously seen, at symtab pos %d", |
| 179 | arg1, arg2); |
| 180 | } |
| 181 | |
| 182 | /* find_text_range --- find start and end of loadable code sections |
| 183 | |
| 184 | The find_text_range function finds the shortest address range that |
| 185 | encloses all sections containing executable code, and stores it in |
| 186 | objfile's text_addr and text_size members. |
| 187 | |
| 188 | dbx_symfile_read will use this to finish off the partial symbol |
| 189 | table, in some cases. */ |
| 190 | |
| 191 | static void |
| 192 | find_text_range (bfd * sym_bfd, struct objfile *objfile) |
| 193 | { |
| 194 | asection *sec; |
| 195 | int found_any = 0; |
| 196 | CORE_ADDR start = 0; |
| 197 | CORE_ADDR end = 0; |
| 198 | |
| 199 | for (sec = sym_bfd->sections; sec; sec = sec->next) |
| 200 | if (bfd_get_section_flags (sym_bfd, sec)((sec)->flags + 0) & SEC_CODE0x020) |
| 201 | { |
| 202 | CORE_ADDR sec_start = bfd_section_vma (sym_bfd, sec)((sec)->vma); |
| 203 | CORE_ADDR sec_end = sec_start + bfd_section_size (sym_bfd, sec)((sec)->_raw_size); |
| 204 | |
| 205 | if (found_any) |
| 206 | { |
| 207 | if (sec_start < start) |
| 208 | start = sec_start; |
| 209 | if (sec_end > end) |
| 210 | end = sec_end; |
| 211 | } |
| 212 | else |
| 213 | { |
| 214 | start = sec_start; |
| 215 | end = sec_end; |
| 216 | } |
| 217 | |
| 218 | found_any = 1; |
| 219 | } |
| 220 | |
| 221 | if (!found_any) |
| 222 | error ("Can't find any code sections in symbol file"); |
| 223 | |
| 224 | DBX_TEXT_ADDR (objfile)(((objfile)->sym_stab_info)->text_addr) = start; |
| 225 | DBX_TEXT_SIZE (objfile)(((objfile)->sym_stab_info)->text_size) = end - start; |
| 226 | } |
| 227 | |
| 228 | |
| 229 | |
| 230 | /* During initial symbol readin, we need to have a structure to keep |
| 231 | track of which psymtabs have which bincls in them. This structure |
| 232 | is used during readin to setup the list of dependencies within each |
| 233 | partial symbol table. */ |
| 234 | |
| 235 | struct header_file_location |
| 236 | { |
| 237 | char *name; /* Name of header file */ |
| 238 | int instance; /* See above */ |
| 239 | struct partial_symtab *pst; /* Partial symtab that has the |
| 240 | BINCL/EINCL defs for this file */ |
| 241 | }; |
| 242 | |
| 243 | /* The actual list and controling variables */ |
| 244 | static struct header_file_location *bincl_list, *next_bincl; |
| 245 | static int bincls_allocated; |
| 246 | |
| 247 | /* Local function prototypes */ |
| 248 | |
| 249 | extern void _initialize_dbxread (void); |
| 250 | |
| 251 | static void read_ofile_symtab (struct partial_symtab *); |
| 252 | |
| 253 | static void dbx_psymtab_to_symtab (struct partial_symtab *); |
| 254 | |
| 255 | static void dbx_psymtab_to_symtab_1 (struct partial_symtab *); |
| 256 | |
| 257 | static void read_dbx_dynamic_symtab (struct objfile *objfile); |
| 258 | |
| 259 | static void read_dbx_symtab (struct objfile *); |
| 260 | |
| 261 | static void free_bincl_list (struct objfile *); |
| 262 | |
| 263 | static struct partial_symtab *find_corresponding_bincl_psymtab (char *, int); |
| 264 | |
| 265 | static void add_bincl_to_list (struct partial_symtab *, char *, int); |
| 266 | |
| 267 | static void init_bincl_list (int, struct objfile *); |
| 268 | |
| 269 | static char *dbx_next_symbol_text (struct objfile *); |
| 270 | |
| 271 | static void fill_symbuf (bfd *); |
| 272 | |
| 273 | static void dbx_symfile_init (struct objfile *); |
| 274 | |
| 275 | static void dbx_new_init (struct objfile *); |
| 276 | |
| 277 | static void dbx_symfile_read (struct objfile *, int); |
| 278 | |
| 279 | static void dbx_symfile_finish (struct objfile *); |
| 280 | |
| 281 | static void record_minimal_symbol (char *, CORE_ADDR, int, struct objfile *); |
| 282 | |
| 283 | static void add_new_header_file (char *, int); |
| 284 | |
| 285 | static void add_old_header_file (char *, int); |
| 286 | |
| 287 | static void add_this_object_header_file (int); |
| 288 | |
| 289 | static struct partial_symtab *start_psymtab (struct objfile *, char *, |
| 290 | CORE_ADDR, int, |
| 291 | struct partial_symbol **, |
| 292 | struct partial_symbol **); |
| 293 | |
| 294 | /* Free up old header file tables */ |
| 295 | |
| 296 | void |
| 297 | free_header_files (void) |
| 298 | { |
| 299 | if (this_object_header_files) |
| 300 | { |
| 301 | xfree (this_object_header_files); |
| 302 | this_object_header_files = NULL((void*)0); |
| 303 | } |
| 304 | n_allocated_this_object_header_files = 0; |
| 305 | } |
| 306 | |
| 307 | /* Allocate new header file tables */ |
| 308 | |
| 309 | void |
| 310 | init_header_files (void) |
| 311 | { |
| 312 | n_allocated_this_object_header_files = 10; |
| 313 | this_object_header_files = (int *) xmalloc (10 * sizeof (int)); |
| 314 | } |
| 315 | |
| 316 | /* Add header file number I for this object file |
| 317 | at the next successive FILENUM. */ |
| 318 | |
| 319 | static void |
| 320 | add_this_object_header_file (int i) |
| 321 | { |
| 322 | if (n_this_object_header_files == n_allocated_this_object_header_files) |
| 323 | { |
| 324 | n_allocated_this_object_header_files *= 2; |
| 325 | this_object_header_files |
| 326 | = (int *) xrealloc ((char *) this_object_header_files, |
| 327 | n_allocated_this_object_header_files * sizeof (int)); |
| 328 | } |
| 329 | |
| 330 | this_object_header_files[n_this_object_header_files++] = i; |
| 331 | } |
| 332 | |
| 333 | /* Add to this file an "old" header file, one already seen in |
| 334 | a previous object file. NAME is the header file's name. |
| 335 | INSTANCE is its instance code, to select among multiple |
| 336 | symbol tables for the same header file. */ |
| 337 | |
| 338 | static void |
| 339 | add_old_header_file (char *name, int instance) |
| 340 | { |
| 341 | struct header_file *p = HEADER_FILES (current_objfile)(((current_objfile)->sym_stab_info)->header_files); |
| 342 | int i; |
| 343 | |
| 344 | for (i = 0; i < N_HEADER_FILES (current_objfile)(((current_objfile)->sym_stab_info)->n_header_files); i++) |
| 345 | if (strcmp (p[i].name, name) == 0 && instance == p[i].instance) |
| 346 | { |
| 347 | add_this_object_header_file (i); |
| 348 | return; |
| 349 | } |
| 350 | repeated_header_complaint (name, symnum); |
| 351 | } |
| 352 | |
| 353 | /* Add to this file a "new" header file: definitions for its types follow. |
| 354 | NAME is the header file's name. |
| 355 | Most often this happens only once for each distinct header file, |
| 356 | but not necessarily. If it happens more than once, INSTANCE has |
| 357 | a different value each time, and references to the header file |
| 358 | use INSTANCE values to select among them. |
| 359 | |
| 360 | dbx output contains "begin" and "end" markers for each new header file, |
| 361 | but at this level we just need to know which files there have been; |
| 362 | so we record the file when its "begin" is seen and ignore the "end". */ |
| 363 | |
| 364 | static void |
| 365 | add_new_header_file (char *name, int instance) |
| 366 | { |
| 367 | int i; |
| 368 | struct header_file *hfile; |
| 369 | |
| 370 | /* Make sure there is room for one more header file. */ |
| 371 | |
| 372 | i = N_ALLOCATED_HEADER_FILES (current_objfile)(((current_objfile)->sym_stab_info)->n_allocated_header_files ); |
| 373 | |
| 374 | if (N_HEADER_FILES (current_objfile)(((current_objfile)->sym_stab_info)->n_header_files) == i) |
| 375 | { |
| 376 | if (i == 0) |
| 377 | { |
| 378 | N_ALLOCATED_HEADER_FILES (current_objfile)(((current_objfile)->sym_stab_info)->n_allocated_header_files ) = 10; |
| 379 | HEADER_FILES (current_objfile)(((current_objfile)->sym_stab_info)->header_files) = (struct header_file *) |
| 380 | xmalloc (10 * sizeof (struct header_file)); |
| 381 | } |
| 382 | else |
| 383 | { |
| 384 | i *= 2; |
| 385 | N_ALLOCATED_HEADER_FILES (current_objfile)(((current_objfile)->sym_stab_info)->n_allocated_header_files ) = i; |
| 386 | HEADER_FILES (current_objfile)(((current_objfile)->sym_stab_info)->header_files) = (struct header_file *) |
| 387 | xrealloc ((char *) HEADER_FILES (current_objfile)(((current_objfile)->sym_stab_info)->header_files), |
| 388 | (i * sizeof (struct header_file))); |
| 389 | } |
| 390 | } |
| 391 | |
| 392 | /* Create an entry for this header file. */ |
| 393 | |
| 394 | i = N_HEADER_FILES (current_objfile)(((current_objfile)->sym_stab_info)->n_header_files)++; |
| 395 | hfile = HEADER_FILES (current_objfile)(((current_objfile)->sym_stab_info)->header_files) + i; |
| 396 | hfile->name = savestring (name, strlen (name)); |
| 397 | hfile->instance = instance; |
| 398 | hfile->length = 10; |
| 399 | hfile->vector |
| 400 | = (struct type **) xmalloc (10 * sizeof (struct type *)); |
| 401 | memset (hfile->vector, 0, 10 * sizeof (struct type *)); |
| 402 | |
| 403 | add_this_object_header_file (i); |
| 404 | } |
| 405 | |
| 406 | #if 0 |
| 407 | static struct type ** |
| 408 | explicit_lookup_type (int real_filenum, int index) |
| 409 | { |
| 410 | struct header_file *f = &HEADER_FILES (current_objfile)(((current_objfile)->sym_stab_info)->header_files)[real_filenum]; |
| 411 | |
| 412 | if (index >= f->length) |
| 413 | { |
| 414 | f->length *= 2; |
| 415 | f->vector = (struct type **) |
| 416 | xrealloc (f->vector, f->length * sizeof (struct type *)); |
| 417 | memset (&f->vector[f->length / 2], |
| 418 | '\0', f->length * sizeof (struct type *) / 2); |
| 419 | } |
| 420 | return &f->vector[index]; |
| 421 | } |
| 422 | #endif |
| 423 | |
| 424 | static void |
| 425 | record_minimal_symbol (char *name, CORE_ADDR address, int type, |
| 426 | struct objfile *objfile) |
| 427 | { |
| 428 | enum minimal_symbol_type ms_type; |
| 429 | int section; |
| 430 | asection *bfd_section; |
| 431 | |
| 432 | switch (type) |
| 433 | { |
| 434 | case N_TEXT4 | N_EXT1: |
| 435 | ms_type = mst_text; |
| 436 | section = SECT_OFF_TEXT (objfile)((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 436, "sect_index_text not initialized"), -1) : objfile-> sect_index_text); |
| 437 | bfd_section = DBX_TEXT_SECTION (objfile)(((objfile)->sym_stab_info)->text_section); |
| 438 | break; |
| 439 | case N_DATA6 | N_EXT1: |
| 440 | ms_type = mst_data; |
| 441 | section = SECT_OFF_DATA (objfile)((objfile->sect_index_data == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 441, "sect_index_data not initialized"), -1) : objfile-> sect_index_data); |
| 442 | bfd_section = DBX_DATA_SECTION (objfile)(((objfile)->sym_stab_info)->data_section); |
| 443 | break; |
| 444 | case N_BSS8 | N_EXT1: |
| 445 | ms_type = mst_bss; |
| 446 | section = SECT_OFF_BSS (objfile)(objfile)->sect_index_bss; |
| 447 | bfd_section = DBX_BSS_SECTION (objfile)(((objfile)->sym_stab_info)->bss_section); |
| 448 | break; |
| 449 | case N_ABS2 | N_EXT1: |
| 450 | ms_type = mst_abs; |
| 451 | section = -1; |
| 452 | bfd_section = NULL((void*)0); |
| 453 | break; |
| 454 | #ifdef N_SETV0x1C |
| 455 | case N_SETV0x1C | N_EXT1: |
| 456 | ms_type = mst_data; |
| 457 | section = SECT_OFF_DATA (objfile)((objfile->sect_index_data == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 457, "sect_index_data not initialized"), -1) : objfile-> sect_index_data); |
| 458 | bfd_section = DBX_DATA_SECTION (objfile)(((objfile)->sym_stab_info)->data_section); |
| 459 | break; |
| 460 | case N_SETV0x1C: |
| 461 | /* I don't think this type actually exists; since a N_SETV is the result |
| 462 | of going over many .o files, it doesn't make sense to have one |
| 463 | file local. */ |
| 464 | ms_type = mst_file_data; |
| 465 | section = SECT_OFF_DATA (objfile)((objfile->sect_index_data == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 465, "sect_index_data not initialized"), -1) : objfile-> sect_index_data); |
| 466 | bfd_section = DBX_DATA_SECTION (objfile)(((objfile)->sym_stab_info)->data_section); |
| 467 | break; |
| 468 | #endif |
| 469 | case N_TEXT4: |
| 470 | case N_NBTEXT: |
| 471 | case N_FN0x1f: |
| 472 | case N_FN_SEQ0x0C: |
| 473 | ms_type = mst_file_text; |
| 474 | section = SECT_OFF_TEXT (objfile)((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 474, "sect_index_text not initialized"), -1) : objfile-> sect_index_text); |
| 475 | bfd_section = DBX_TEXT_SECTION (objfile)(((objfile)->sym_stab_info)->text_section); |
| 476 | break; |
| 477 | case N_DATA6: |
| 478 | ms_type = mst_file_data; |
| 479 | |
| 480 | /* Check for __DYNAMIC, which is used by Sun shared libraries. |
| 481 | Record it as global even if it's local, not global, so |
| 482 | lookup_minimal_symbol can find it. We don't check symbol_leading_char |
| 483 | because for SunOS4 it always is '_'. */ |
| 484 | if (name[8] == 'C' && DEPRECATED_STREQ ("__DYNAMIC", name)(strcmp (("__DYNAMIC"), (name)) == 0)) |
| 485 | ms_type = mst_data; |
| 486 | |
| 487 | /* Same with virtual function tables, both global and static. */ |
| 488 | { |
| 489 | char *tempstring = name; |
| 490 | if (tempstring[0] == bfd_get_symbol_leading_char (objfile->obfd)((objfile->obfd)->xvec->symbol_leading_char)) |
| 491 | ++tempstring; |
| 492 | if (is_vtable_name (tempstring)) |
| 493 | ms_type = mst_data; |
| 494 | } |
| 495 | section = SECT_OFF_DATA (objfile)((objfile->sect_index_data == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 495, "sect_index_data not initialized"), -1) : objfile-> sect_index_data); |
| 496 | bfd_section = DBX_DATA_SECTION (objfile)(((objfile)->sym_stab_info)->data_section); |
| 497 | break; |
| 498 | case N_BSS8: |
| 499 | ms_type = mst_file_bss; |
| 500 | section = SECT_OFF_BSS (objfile)(objfile)->sect_index_bss; |
| 501 | bfd_section = DBX_BSS_SECTION (objfile)(((objfile)->sym_stab_info)->bss_section); |
| 502 | break; |
| 503 | default: |
| 504 | ms_type = mst_unknown; |
| 505 | section = -1; |
| 506 | bfd_section = NULL((void*)0); |
| 507 | break; |
| 508 | } |
| 509 | |
| 510 | if ((ms_type == mst_file_text || ms_type == mst_text) |
| 511 | && address < lowest_text_address) |
| 512 | lowest_text_address = address; |
| 513 | |
| 514 | prim_record_minimal_symbol_and_info |
| 515 | (name, address, ms_type, NULL((void*)0), section, bfd_section, objfile); |
| 516 | } |
| 517 | |
| 518 | /* Scan and build partial symbols for a symbol file. |
| 519 | We have been initialized by a call to dbx_symfile_init, which |
| 520 | put all the relevant info into a "struct dbx_symfile_info", |
| 521 | hung off the objfile structure. |
| 522 | |
| 523 | MAINLINE is true if we are reading the main symbol |
| 524 | table (as opposed to a shared lib or dynamically loaded file). */ |
| 525 | |
| 526 | static void |
| 527 | dbx_symfile_read (struct objfile *objfile, int mainline) |
| 528 | { |
| 529 | bfd *sym_bfd; |
| 530 | int val; |
| 531 | struct cleanup *back_to; |
| 532 | |
| 533 | sym_bfd = objfile->obfd; |
| 534 | |
| 535 | /* .o and .nlm files are relocatables with text, data and bss segs based at |
| 536 | 0. This flag disables special (Solaris stabs-in-elf only) fixups for |
| 537 | symbols with a value of 0. */ |
| 538 | |
| 539 | symfile_relocatable = bfd_get_file_flags (sym_bfd)((sym_bfd)->flags) & HAS_RELOC0x01; |
| 540 | |
| 541 | /* This is true for Solaris (and all other systems which put stabs |
| 542 | in sections, hopefully, since it would be silly to do things |
| 543 | differently from Solaris), and false for SunOS4 and other a.out |
| 544 | file formats. */ |
| 545 | block_address_function_relative = |
| 546 | ((0 == strncmp (bfd_get_target (sym_bfd)((sym_bfd)->xvec->name), "elf", 3)) |
| 547 | || (0 == strncmp (bfd_get_target (sym_bfd)((sym_bfd)->xvec->name), "som", 3)) |
| 548 | || (0 == strncmp (bfd_get_target (sym_bfd)((sym_bfd)->xvec->name), "coff", 4)) |
| 549 | || (0 == strncmp (bfd_get_target (sym_bfd)((sym_bfd)->xvec->name), "pe", 2)) |
| 550 | || (0 == strncmp (bfd_get_target (sym_bfd)((sym_bfd)->xvec->name), "epoc-pe", 7)) |
| 551 | || (0 == strncmp (bfd_get_target (sym_bfd)((sym_bfd)->xvec->name), "nlm", 3))); |
| 552 | |
| 553 | val = bfd_seek (sym_bfd, DBX_SYMTAB_OFFSET (objfile)(((objfile)->sym_stab_info)->symtab_offset), SEEK_SET0); |
| 554 | if (val < 0) |
| 555 | perror_with_name (objfile->name); |
| 556 | |
| 557 | /* If we are reinitializing, or if we have never loaded syms yet, init */ |
| 558 | if (mainline |
| 559 | || (objfile->global_psymbols.size == 0 |
| 560 | && objfile->static_psymbols.size == 0)) |
| 561 | init_psymbol_list (objfile, DBX_SYMCOUNT (objfile)(((objfile)->sym_stab_info)->symcount)); |
| 562 | |
| 563 | symbol_size = DBX_SYMBOL_SIZE (objfile)(((objfile)->sym_stab_info)->symbol_size); |
| 564 | symbol_table_offset = DBX_SYMTAB_OFFSET (objfile)(((objfile)->sym_stab_info)->symtab_offset); |
| 565 | |
| 566 | free_pending_blocks (); |
| 567 | back_to = make_cleanup (really_free_pendings, 0); |
| 568 | |
| 569 | init_minimal_symbol_collection (); |
| 570 | make_cleanup_discard_minimal_symbols (); |
| 571 | |
| 572 | /* Read stabs data from executable file and define symbols. */ |
| 573 | |
| 574 | read_dbx_symtab (objfile); |
| 575 | |
| 576 | /* Add the dynamic symbols. */ |
| 577 | |
| 578 | read_dbx_dynamic_symtab (objfile); |
| 579 | |
| 580 | /* Install any minimal symbols that have been collected as the current |
| 581 | minimal symbols for this objfile. */ |
| 582 | |
| 583 | install_minimal_symbols (objfile); |
| 584 | |
| 585 | do_cleanups (back_to); |
| 586 | } |
| 587 | |
| 588 | /* Initialize anything that needs initializing when a completely new |
| 589 | symbol file is specified (not just adding some symbols from another |
| 590 | file, e.g. a shared library). */ |
| 591 | |
| 592 | static void |
| 593 | dbx_new_init (struct objfile *ignore) |
| 594 | { |
| 595 | stabsread_new_init (); |
| 596 | buildsym_new_init (); |
| 597 | init_header_files (); |
| 598 | } |
| 599 | |
| 600 | |
| 601 | /* dbx_symfile_init () |
| 602 | is the dbx-specific initialization routine for reading symbols. |
| 603 | It is passed a struct objfile which contains, among other things, |
| 604 | the BFD for the file whose symbols are being read, and a slot for a pointer |
| 605 | to "private data" which we fill with goodies. |
| 606 | |
| 607 | We read the string table into malloc'd space and stash a pointer to it. |
| 608 | |
| 609 | Since BFD doesn't know how to read debug symbols in a format-independent |
| 610 | way (and may never do so...), we have to do it ourselves. We will never |
| 611 | be called unless this is an a.out (or very similar) file. |
| 612 | FIXME, there should be a cleaner peephole into the BFD environment here. */ |
| 613 | |
| 614 | #define DBX_STRINGTAB_SIZE_SIZEsizeof(long) sizeof(long) /* FIXME */ |
| 615 | |
| 616 | static void |
| 617 | dbx_symfile_init (struct objfile *objfile) |
| 618 | { |
| 619 | int val; |
| 620 | bfd *sym_bfd = objfile->obfd; |
| 621 | char *name = bfd_get_filename (sym_bfd)((char *) (sym_bfd)->filename); |
| 622 | asection *text_sect; |
| 623 | unsigned char size_temp[DBX_STRINGTAB_SIZE_SIZEsizeof(long)]; |
| 624 | |
| 625 | /* Allocate struct to keep track of the symfile */ |
| 626 | objfile->sym_stab_info = (struct dbx_symfile_info *) |
| 627 | xmalloc (sizeof (struct dbx_symfile_info)); |
| 628 | memset (objfile->sym_stab_info, 0, sizeof (struct dbx_symfile_info)); |
| 629 | |
| 630 | DBX_TEXT_SECTION (objfile)(((objfile)->sym_stab_info)->text_section) = bfd_get_section_by_name (sym_bfd, ".text"); |
| 631 | DBX_DATA_SECTION (objfile)(((objfile)->sym_stab_info)->data_section) = bfd_get_section_by_name (sym_bfd, ".data"); |
| 632 | DBX_BSS_SECTION (objfile)(((objfile)->sym_stab_info)->bss_section) = bfd_get_section_by_name (sym_bfd, ".bss"); |
| 633 | |
| 634 | /* FIXME POKING INSIDE BFD DATA STRUCTURES */ |
| 635 | #define STRING_TABLE_OFFSET(sym_bfd->origin + (((sym_bfd)->tdata.aout_data->a). str_filepos)) (sym_bfd->origin + obj_str_filepos (sym_bfd)(((sym_bfd)->tdata.aout_data->a).str_filepos)) |
| 636 | #define SYMBOL_TABLE_OFFSET(sym_bfd->origin + (((sym_bfd)->tdata.aout_data->a). sym_filepos)) (sym_bfd->origin + obj_sym_filepos (sym_bfd)(((sym_bfd)->tdata.aout_data->a).sym_filepos)) |
| 637 | |
| 638 | /* FIXME POKING INSIDE BFD DATA STRUCTURES */ |
| 639 | |
| 640 | DBX_SYMFILE_INFO (objfile)((objfile)->sym_stab_info)->stab_section_info = NULL((void*)0); |
| 641 | |
| 642 | text_sect = bfd_get_section_by_name (sym_bfd, ".text"); |
| 643 | if (!text_sect) |
| 644 | error ("Can't find .text section in symbol file"); |
| 645 | DBX_TEXT_ADDR (objfile)(((objfile)->sym_stab_info)->text_addr) = bfd_section_vma (sym_bfd, text_sect)((text_sect)->vma); |
| 646 | DBX_TEXT_SIZE (objfile)(((objfile)->sym_stab_info)->text_size) = bfd_section_size (sym_bfd, text_sect)((text_sect)->_raw_size); |
| 647 | |
| 648 | DBX_SYMBOL_SIZE (objfile)(((objfile)->sym_stab_info)->symbol_size) = obj_symbol_entry_size (sym_bfd)(((sym_bfd)->tdata.aout_data->a).symbol_entry_size); |
| 649 | DBX_SYMCOUNT (objfile)(((objfile)->sym_stab_info)->symcount) = bfd_get_symcount (sym_bfd)((sym_bfd)->symcount); |
| 650 | DBX_SYMTAB_OFFSET (objfile)(((objfile)->sym_stab_info)->symtab_offset) = SYMBOL_TABLE_OFFSET(sym_bfd->origin + (((sym_bfd)->tdata.aout_data->a). sym_filepos)); |
| 651 | |
| 652 | /* Read the string table and stash it away in the objfile_obstack. |
| 653 | When we blow away the objfile the string table goes away as well. |
| 654 | Note that gdb used to use the results of attempting to malloc the |
| 655 | string table, based on the size it read, as a form of sanity check |
| 656 | for botched byte swapping, on the theory that a byte swapped string |
| 657 | table size would be so totally bogus that the malloc would fail. Now |
| 658 | that we put in on the objfile_obstack, we can't do this since gdb gets |
| 659 | a fatal error (out of virtual memory) if the size is bogus. We can |
| 660 | however at least check to see if the size is less than the size of |
| 661 | the size field itself, or larger than the size of the entire file. |
| 662 | Note that all valid string tables have a size greater than zero, since |
| 663 | the bytes used to hold the size are included in the count. */ |
| 664 | |
| 665 | if (STRING_TABLE_OFFSET(sym_bfd->origin + (((sym_bfd)->tdata.aout_data->a). str_filepos)) == 0) |
| 666 | { |
| 667 | /* It appears that with the existing bfd code, STRING_TABLE_OFFSET |
| 668 | will never be zero, even when there is no string table. This |
| 669 | would appear to be a bug in bfd. */ |
| 670 | DBX_STRINGTAB_SIZE (objfile)(((objfile)->sym_stab_info)->stringtab_size) = 0; |
| 671 | DBX_STRINGTAB (objfile)(((objfile)->sym_stab_info)->stringtab) = NULL((void*)0); |
| 672 | } |
| 673 | else |
| 674 | { |
| 675 | val = bfd_seek (sym_bfd, STRING_TABLE_OFFSET(sym_bfd->origin + (((sym_bfd)->tdata.aout_data->a). str_filepos)), SEEK_SET0); |
| 676 | if (val < 0) |
| 677 | perror_with_name (name); |
| 678 | |
| 679 | memset (size_temp, 0, sizeof (size_temp)); |
| 680 | val = bfd_bread (size_temp, sizeof (size_temp), sym_bfd); |
| 681 | if (val < 0) |
| 682 | { |
| 683 | perror_with_name (name); |
| 684 | } |
| 685 | else if (val == 0) |
| 686 | { |
| 687 | /* With the existing bfd code, STRING_TABLE_OFFSET will be set to |
| 688 | EOF if there is no string table, and attempting to read the size |
| 689 | from EOF will read zero bytes. */ |
| 690 | DBX_STRINGTAB_SIZE (objfile)(((objfile)->sym_stab_info)->stringtab_size) = 0; |
| 691 | DBX_STRINGTAB (objfile)(((objfile)->sym_stab_info)->stringtab) = NULL((void*)0); |
| 692 | } |
| 693 | else |
| 694 | { |
| 695 | /* Read some data that would appear to be the string table size. |
| 696 | If there really is a string table, then it is probably the right |
| 697 | size. Byteswap if necessary and validate the size. Note that |
| 698 | the minimum is DBX_STRINGTAB_SIZE_SIZE. If we just read some |
| 699 | random data that happened to be at STRING_TABLE_OFFSET, because |
| 700 | bfd can't tell us there is no string table, the sanity checks may |
| 701 | or may not catch this. */ |
| 702 | DBX_STRINGTAB_SIZE (objfile)(((objfile)->sym_stab_info)->stringtab_size) = bfd_h_get_32 (sym_bfd, size_temp)((*((sym_bfd)->xvec->bfd_h_getx32)) (size_temp)); |
| 703 | |
| 704 | if (DBX_STRINGTAB_SIZE (objfile)(((objfile)->sym_stab_info)->stringtab_size) < sizeof (size_temp) |
| 705 | || DBX_STRINGTAB_SIZE (objfile)(((objfile)->sym_stab_info)->stringtab_size) > bfd_get_size (sym_bfd)) |
| 706 | error ("ridiculous string table size (%d bytes).", |
| 707 | DBX_STRINGTAB_SIZE (objfile)(((objfile)->sym_stab_info)->stringtab_size)); |
| 708 | |
| 709 | DBX_STRINGTAB (objfile)(((objfile)->sym_stab_info)->stringtab) = |
| 710 | (char *) obstack_alloc (&objfile->objfile_obstack,__extension__ ({ struct obstack *__h = (&objfile->objfile_obstack ); __extension__ ({ struct obstack *__o = (__h); int __len = ( ((((objfile)->sym_stab_info)->stringtab_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; }); }) |
| 711 | DBX_STRINGTAB_SIZE (objfile))__extension__ ({ struct obstack *__h = (&objfile->objfile_obstack ); __extension__ ({ struct obstack *__o = (__h); int __len = ( ((((objfile)->sym_stab_info)->stringtab_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; }); }); |
| 712 | OBJSTAT (objfile, sz_strtab += DBX_STRINGTAB_SIZE (objfile))(objfile -> stats.sz_strtab += (((objfile)->sym_stab_info )->stringtab_size)); |
| 713 | |
| 714 | /* Now read in the string table in one big gulp. */ |
| 715 | |
| 716 | val = bfd_seek (sym_bfd, STRING_TABLE_OFFSET(sym_bfd->origin + (((sym_bfd)->tdata.aout_data->a). str_filepos)), SEEK_SET0); |
| 717 | if (val < 0) |
| 718 | perror_with_name (name); |
| 719 | val = bfd_bread (DBX_STRINGTAB (objfile)(((objfile)->sym_stab_info)->stringtab), |
| 720 | DBX_STRINGTAB_SIZE (objfile)(((objfile)->sym_stab_info)->stringtab_size), |
| 721 | sym_bfd); |
| 722 | if (val != DBX_STRINGTAB_SIZE (objfile)(((objfile)->sym_stab_info)->stringtab_size)) |
| 723 | perror_with_name (name); |
| 724 | } |
| 725 | } |
| 726 | } |
| 727 | |
| 728 | /* Perform any local cleanups required when we are done with a particular |
| 729 | objfile. I.E, we are in the process of discarding all symbol information |
| 730 | for an objfile, freeing up all memory held for it, and unlinking the |
| 731 | objfile struct from the global list of known objfiles. */ |
| 732 | |
| 733 | static void |
| 734 | dbx_symfile_finish (struct objfile *objfile) |
| 735 | { |
| 736 | if (objfile->sym_stab_info != NULL((void*)0)) |
| 737 | { |
| 738 | if (HEADER_FILES (objfile)(((objfile)->sym_stab_info)->header_files) != NULL((void*)0)) |
| 739 | { |
| 740 | int i = N_HEADER_FILES (objfile)(((objfile)->sym_stab_info)->n_header_files); |
| 741 | struct header_file *hfiles = HEADER_FILES (objfile)(((objfile)->sym_stab_info)->header_files); |
| 742 | |
| 743 | while (--i >= 0) |
| 744 | { |
| 745 | xfree (hfiles[i].name); |
| 746 | xfree (hfiles[i].vector); |
| 747 | } |
| 748 | xfree (hfiles); |
| 749 | } |
| 750 | xfree (objfile->sym_stab_info); |
| 751 | } |
| 752 | free_header_files (); |
| 753 | } |
| 754 | |
| 755 | |
| 756 | /* Buffer for reading the symbol table entries. */ |
| 757 | static struct external_nlist symbuf[4096]; |
| 758 | static int symbuf_idx; |
| 759 | static int symbuf_end; |
| 760 | |
| 761 | /* Name of last function encountered. Used in Solaris to approximate |
| 762 | object file boundaries. */ |
| 763 | static char *last_function_name; |
| 764 | |
| 765 | /* The address in memory of the string table of the object file we are |
| 766 | reading (which might not be the "main" object file, but might be a |
| 767 | shared library or some other dynamically loaded thing). This is |
| 768 | set by read_dbx_symtab when building psymtabs, and by |
| 769 | read_ofile_symtab when building symtabs, and is used only by |
| 770 | next_symbol_text. FIXME: If that is true, we don't need it when |
| 771 | building psymtabs, right? */ |
| 772 | static char *stringtab_global; |
| 773 | |
| 774 | /* These variables are used to control fill_symbuf when the stabs |
| 775 | symbols are not contiguous (as may be the case when a COFF file is |
| 776 | linked using --split-by-reloc). */ |
| 777 | static struct stab_section_list *symbuf_sections; |
| 778 | static unsigned int symbuf_left; |
| 779 | static unsigned int symbuf_read; |
| 780 | |
| 781 | /* This variable stores a global stabs buffer, if we read stabs into |
| 782 | memory in one chunk in order to process relocations. */ |
| 783 | static bfd_byte *stabs_data; |
| 784 | |
| 785 | /* Refill the symbol table input buffer |
| 786 | and set the variables that control fetching entries from it. |
| 787 | Reports an error if no data available. |
| 788 | This function can read past the end of the symbol table |
| 789 | (into the string table) but this does no harm. */ |
| 790 | |
| 791 | static void |
| 792 | fill_symbuf (bfd *sym_bfd) |
| 793 | { |
| 794 | unsigned int count; |
| 795 | int nbytes; |
| 796 | |
| 797 | if (stabs_data) |
| 798 | { |
| 799 | nbytes = sizeof (symbuf); |
| 800 | if (nbytes > symbuf_left) |
| 801 | nbytes = symbuf_left; |
| 802 | memcpy (symbuf, stabs_data + symbuf_read, nbytes); |
| 803 | } |
| 804 | else if (symbuf_sections == NULL((void*)0)) |
| 805 | { |
| 806 | count = sizeof (symbuf); |
| 807 | nbytes = bfd_bread (symbuf, count, sym_bfd); |
| 808 | } |
| 809 | else |
| 810 | { |
| 811 | if (symbuf_left <= 0) |
| 812 | { |
| 813 | file_ptr filepos = symbuf_sections->section->filepos; |
| 814 | if (bfd_seek (sym_bfd, filepos, SEEK_SET0) != 0) |
| 815 | perror_with_name (bfd_get_filename (sym_bfd)((char *) (sym_bfd)->filename)); |
| 816 | symbuf_left = bfd_section_size (sym_bfd, symbuf_sections->section)((symbuf_sections->section)->_raw_size); |
| 817 | symbol_table_offset = filepos - symbuf_read; |
| 818 | symbuf_sections = symbuf_sections->next; |
| 819 | } |
| 820 | |
| 821 | count = symbuf_left; |
| 822 | if (count > sizeof (symbuf)) |
| 823 | count = sizeof (symbuf); |
| 824 | nbytes = bfd_bread (symbuf, count, sym_bfd); |
| 825 | } |
| 826 | |
| 827 | if (nbytes < 0) |
| 828 | perror_with_name (bfd_get_filename (sym_bfd)((char *) (sym_bfd)->filename)); |
| 829 | else if (nbytes == 0) |
| 830 | error ("Premature end of file reading symbol table"); |
| 831 | symbuf_end = nbytes / symbol_size; |
| 832 | symbuf_idx = 0; |
| 833 | symbuf_left -= nbytes; |
| 834 | symbuf_read += nbytes; |
| 835 | } |
| 836 | |
| 837 | static void |
| 838 | stabs_seek (int sym_offset) |
| 839 | { |
| 840 | if (stabs_data) |
| 841 | { |
| 842 | symbuf_read += sym_offset; |
| 843 | symbuf_left -= sym_offset; |
| 844 | } |
| 845 | else |
| 846 | bfd_seek (symfile_bfd, sym_offset, SEEK_CUR1); |
| 847 | } |
| 848 | |
| 849 | #define INTERNALIZE_SYMBOL(intern, extern, abfd){ (intern).n_type = (*(unsigned char *) ((extern)->e_type) & 0xff); (intern).n_strx = ((*((abfd)->xvec->bfd_h_getx32 )) ((extern)->e_strx)); (intern).n_desc = ((*((abfd)->xvec ->bfd_h_getx16)) ((extern)->e_desc)); if (bfd_get_sign_extend_vma (abfd)) (intern).n_value = ((*((abfd)->xvec->bfd_h_getx_signed_32 )) ((extern)->e_value)); else (intern).n_value = ((*((abfd )->xvec->bfd_h_getx32)) ((extern)->e_value)); } \ |
| 850 | { \ |
| 851 | (intern).n_type = bfd_h_get_8 (abfd, (extern)->e_type)(*(unsigned char *) ((extern)->e_type) & 0xff); \ |
| 852 | (intern).n_strx = bfd_h_get_32 (abfd, (extern)->e_strx)((*((abfd)->xvec->bfd_h_getx32)) ((extern)->e_strx)); \ |
| 853 | (intern).n_desc = bfd_h_get_16 (abfd, (extern)->e_desc)((*((abfd)->xvec->bfd_h_getx16)) ((extern)->e_desc)); \ |
| 854 | if (bfd_get_sign_extend_vma (abfd)) \ |
| 855 | (intern).n_value = bfd_h_get_signed_32 (abfd, (extern)->e_value)((*((abfd)->xvec->bfd_h_getx_signed_32)) ((extern)-> e_value)); \ |
| 856 | else \ |
| 857 | (intern).n_value = bfd_h_get_32 (abfd, (extern)->e_value)((*((abfd)->xvec->bfd_h_getx32)) ((extern)->e_value) ); \ |
| 858 | } |
| 859 | |
| 860 | /* Invariant: The symbol pointed to by symbuf_idx is the first one |
| 861 | that hasn't been swapped. Swap the symbol at the same time |
| 862 | that symbuf_idx is incremented. */ |
| 863 | |
| 864 | /* dbx allows the text of a symbol name to be continued into the |
| 865 | next symbol name! When such a continuation is encountered |
| 866 | (a \ at the end of the text of a name) |
| 867 | call this function to get the continuation. */ |
| 868 | |
| 869 | static char * |
| 870 | dbx_next_symbol_text (struct objfile *objfile) |
| 871 | { |
| 872 | struct internal_nlist nlist; |
| 873 | |
| 874 | if (symbuf_idx == symbuf_end) |
| 875 | fill_symbuf (symfile_bfd); |
| 876 | |
| 877 | symnum++; |
| 878 | INTERNALIZE_SYMBOL (nlist, &symbuf[symbuf_idx], symfile_bfd){ (nlist).n_type = (*(unsigned char *) ((&symbuf[symbuf_idx ])->e_type) & 0xff); (nlist).n_strx = ((*((symfile_bfd )->xvec->bfd_h_getx32)) ((&symbuf[symbuf_idx])-> e_strx)); (nlist).n_desc = ((*((symfile_bfd)->xvec->bfd_h_getx16 )) ((&symbuf[symbuf_idx])->e_desc)); if (bfd_get_sign_extend_vma (symfile_bfd)) (nlist).n_value = ((*((symfile_bfd)->xvec-> bfd_h_getx_signed_32)) ((&symbuf[symbuf_idx])->e_value )); else (nlist).n_value = ((*((symfile_bfd)->xvec->bfd_h_getx32 )) ((&symbuf[symbuf_idx])->e_value)); }; |
| 879 | OBJSTAT (objfile, n_stabs++)(objfile -> stats.n_stabs++); |
| 880 | |
| 881 | symbuf_idx++; |
| 882 | |
| 883 | return nlist.n_strx + stringtab_global + file_string_table_offset; |
| 884 | } |
| 885 | |
| 886 | /* Initialize the list of bincls to contain none and have some |
| 887 | allocated. */ |
| 888 | |
| 889 | static void |
| 890 | init_bincl_list (int number, struct objfile *objfile) |
| 891 | { |
| 892 | bincls_allocated = number; |
| 893 | next_bincl = bincl_list = (struct header_file_location *) |
| 894 | xmalloc (bincls_allocated * sizeof (struct header_file_location)); |
| 895 | } |
| 896 | |
| 897 | /* Add a bincl to the list. */ |
| 898 | |
| 899 | static void |
| 900 | add_bincl_to_list (struct partial_symtab *pst, char *name, int instance) |
| 901 | { |
| 902 | if (next_bincl >= bincl_list + bincls_allocated) |
| 903 | { |
| 904 | int offset = next_bincl - bincl_list; |
| 905 | bincls_allocated *= 2; |
| 906 | bincl_list = (struct header_file_location *) |
| 907 | xrealloc ((char *) bincl_list, |
| 908 | bincls_allocated * sizeof (struct header_file_location)); |
| 909 | next_bincl = bincl_list + offset; |
| 910 | } |
| 911 | next_bincl->pst = pst; |
| 912 | next_bincl->instance = instance; |
| 913 | next_bincl++->name = name; |
| 914 | } |
| 915 | |
| 916 | /* Given a name, value pair, find the corresponding |
| 917 | bincl in the list. Return the partial symtab associated |
| 918 | with that header_file_location. */ |
| 919 | |
| 920 | static struct partial_symtab * |
| 921 | find_corresponding_bincl_psymtab (char *name, int instance) |
| 922 | { |
| 923 | struct header_file_location *bincl; |
| 924 | |
| 925 | for (bincl = bincl_list; bincl < next_bincl; bincl++) |
| 926 | if (bincl->instance == instance |
| 927 | && strcmp (name, bincl->name) == 0) |
| 928 | return bincl->pst; |
| 929 | |
| 930 | repeated_header_complaint (name, symnum); |
| 931 | return (struct partial_symtab *) 0; |
| 932 | } |
| 933 | |
| 934 | /* Free the storage allocated for the bincl list. */ |
| 935 | |
| 936 | static void |
| 937 | free_bincl_list (struct objfile *objfile) |
| 938 | { |
| 939 | xfree (bincl_list); |
| 940 | bincls_allocated = 0; |
| 941 | } |
| 942 | |
| 943 | static void |
| 944 | do_free_bincl_list_cleanup (void *objfile) |
| 945 | { |
| 946 | free_bincl_list (objfile); |
| 947 | } |
| 948 | |
| 949 | static struct cleanup * |
| 950 | make_cleanup_free_bincl_list (struct objfile *objfile) |
| 951 | { |
| 952 | return make_cleanup (do_free_bincl_list_cleanup, objfile); |
| 953 | } |
| 954 | |
| 955 | /* Set namestring based on nlist. If the string table index is invalid, |
| 956 | give a fake name, and print a single error message per symbol file read, |
| 957 | rather than abort the symbol reading or flood the user with messages. */ |
| 958 | |
| 959 | static char * |
| 960 | set_namestring (struct objfile *objfile, struct internal_nlist nlist) |
| 961 | { |
| 962 | char *namestring; |
| 963 | |
| 964 | if (((unsigned) nlist.n_strx + file_string_table_offset) >= |
| 965 | DBX_STRINGTAB_SIZE (objfile)(((objfile)->sym_stab_info)->stringtab_size)) |
| 966 | { |
| 967 | complaint (&symfile_complaints, "bad string table offset in symbol %d", |
| 968 | symnum); |
| 969 | namestring = "<bad string table offset>"; |
| 970 | } |
| 971 | else |
| 972 | namestring = nlist.n_strx + file_string_table_offset + |
| 973 | DBX_STRINGTAB (objfile)(((objfile)->sym_stab_info)->stringtab); |
| 974 | return namestring; |
| 975 | } |
| 976 | |
| 977 | /* Scan a SunOs dynamic symbol table for symbols of interest and |
| 978 | add them to the minimal symbol table. */ |
| 979 | |
| 980 | static void |
| 981 | read_dbx_dynamic_symtab (struct objfile *objfile) |
| 982 | { |
| 983 | bfd *abfd = objfile->obfd; |
| 984 | struct cleanup *back_to; |
| 985 | int counter; |
| 986 | long dynsym_size; |
| 987 | long dynsym_count; |
| 988 | asymbol **dynsyms; |
| 989 | asymbol **symptr; |
| 990 | arelent **relptr; |
| 991 | long dynrel_size; |
| 992 | long dynrel_count; |
| 993 | arelent **dynrels; |
| 994 | CORE_ADDR sym_value; |
| 995 | char *name; |
| 996 | |
| 997 | /* Check that the symbol file has dynamic symbols that we know about. |
| 998 | bfd_arch_unknown can happen if we are reading a sun3 symbol file |
| 999 | on a sun4 host (and vice versa) and bfd is not configured |
| 1000 | --with-target=all. This would trigger an assertion in bfd/sunos.c, |
| 1001 | so we ignore the dynamic symbols in this case. */ |
| 1002 | if (bfd_get_flavour (abfd)((abfd)->xvec->flavour) != bfd_target_aout_flavour |
| 1003 | || (bfd_get_file_flags (abfd)((abfd)->flags) & DYNAMIC0x40) == 0 |
| 1004 | || bfd_get_arch (abfd) == bfd_arch_unknown) |
| 1005 | return; |
| 1006 | |
| 1007 | dynsym_size = bfd_get_dynamic_symtab_upper_bound (abfd)((*((abfd)->xvec->_bfd_get_dynamic_symtab_upper_bound)) (abfd)); |
| 1008 | if (dynsym_size < 0) |
| 1009 | return; |
| 1010 | |
| 1011 | dynsyms = (asymbol **) xmalloc (dynsym_size); |
| 1012 | back_to = make_cleanup (xfree, dynsyms); |
| 1013 | |
| 1014 | dynsym_count = bfd_canonicalize_dynamic_symtab (abfd, dynsyms)((*((abfd)->xvec->_bfd_canonicalize_dynamic_symtab)) (abfd , dynsyms)); |
| 1015 | if (dynsym_count < 0) |
| 1016 | { |
| 1017 | do_cleanups (back_to); |
| 1018 | return; |
| 1019 | } |
| 1020 | |
| 1021 | /* Enter dynamic symbols into the minimal symbol table |
| 1022 | if this is a stripped executable. */ |
| 1023 | if (bfd_get_symcount (abfd)((abfd)->symcount) <= 0) |
| 1024 | { |
| 1025 | symptr = dynsyms; |
| 1026 | for (counter = 0; counter < dynsym_count; counter++, symptr++) |
| 1027 | { |
| 1028 | asymbol *sym = *symptr; |
| 1029 | asection *sec; |
| 1030 | int type; |
| 1031 | |
| 1032 | sec = bfd_get_section (sym)((sym)->section); |
| 1033 | |
| 1034 | /* BFD symbols are section relative. */ |
| 1035 | sym_value = sym->value + sec->vma; |
| 1036 | |
| 1037 | if (bfd_get_section_flags (abfd, sec)((sec)->flags + 0) & SEC_CODE0x020) |
| 1038 | { |
| 1039 | sym_value += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile))((((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1039, "sect_index_text not initialized"), -1) : objfile-> sect_index_text) == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1039, "Section index is uninitialized"), -1) : objfile-> section_offsets->offsets[((objfile->sect_index_text == - 1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1039, "sect_index_text not initialized"), -1) : objfile-> sect_index_text)]); |
| 1040 | type = N_TEXT4; |
| 1041 | } |
| 1042 | else if (bfd_get_section_flags (abfd, sec)((sec)->flags + 0) & SEC_DATA0x040) |
| 1043 | { |
| 1044 | sym_value += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile))((((objfile->sect_index_data == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1044, "sect_index_data not initialized"), -1) : objfile-> sect_index_data) == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1044, "Section index is uninitialized"), -1) : objfile-> section_offsets->offsets[((objfile->sect_index_data == - 1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1044, "sect_index_data not initialized"), -1) : objfile-> sect_index_data)]); |
| 1045 | type = N_DATA6; |
| 1046 | } |
| 1047 | else if (bfd_get_section_flags (abfd, sec)((sec)->flags + 0) & SEC_ALLOC0x001) |
| 1048 | { |
| 1049 | sym_value += ANOFFSET (objfile->section_offsets, SECT_OFF_BSS (objfile))(((objfile)->sect_index_bss == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1049, "Section index is uninitialized"), -1) : objfile-> section_offsets->offsets[(objfile)->sect_index_bss]); |
| 1050 | type = N_BSS8; |
| 1051 | } |
| 1052 | else |
| 1053 | continue; |
| 1054 | |
| 1055 | if (sym->flags & BSF_GLOBAL0x02) |
| 1056 | type |= N_EXT1; |
| 1057 | |
| 1058 | record_minimal_symbol ((char *) bfd_asymbol_name (sym)((sym)->name), sym_value, |
| 1059 | type, objfile); |
| 1060 | } |
| 1061 | } |
| 1062 | |
| 1063 | /* Symbols from shared libraries have a dynamic relocation entry |
| 1064 | that points to the associated slot in the procedure linkage table. |
| 1065 | We make a mininal symbol table entry with type mst_solib_trampoline |
| 1066 | at the address in the procedure linkage table. */ |
| 1067 | dynrel_size = bfd_get_dynamic_reloc_upper_bound (abfd)((*((abfd)->xvec->_bfd_get_dynamic_reloc_upper_bound)) ( abfd)); |
| 1068 | if (dynrel_size < 0) |
| 1069 | { |
| 1070 | do_cleanups (back_to); |
| 1071 | return; |
| 1072 | } |
| 1073 | |
| 1074 | dynrels = (arelent **) xmalloc (dynrel_size); |
| 1075 | make_cleanup (xfree, dynrels); |
| 1076 | |
| 1077 | dynrel_count = bfd_canonicalize_dynamic_reloc (abfd, dynrels, dynsyms)((*((abfd)->xvec->_bfd_canonicalize_dynamic_reloc)) (abfd , dynrels, dynsyms)); |
| 1078 | if (dynrel_count < 0) |
| 1079 | { |
| 1080 | do_cleanups (back_to); |
| 1081 | return; |
| 1082 | } |
| 1083 | |
| 1084 | for (counter = 0, relptr = dynrels; |
| 1085 | counter < dynrel_count; |
| 1086 | counter++, relptr++) |
| 1087 | { |
| 1088 | arelent *rel = *relptr; |
| 1089 | CORE_ADDR address = |
| 1090 | rel->address + ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile))((((objfile->sect_index_data == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1090, "sect_index_data not initialized"), -1) : objfile-> sect_index_data) == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1090, "Section index is uninitialized"), -1) : objfile-> section_offsets->offsets[((objfile->sect_index_data == - 1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1090, "sect_index_data not initialized"), -1) : objfile-> sect_index_data)]); |
| 1091 | |
| 1092 | switch (bfd_get_arch (abfd)) |
| 1093 | { |
| 1094 | case bfd_arch_sparc: |
| 1095 | if (rel->howto->type != RELOC_JMP_SLOT) |
| 1096 | continue; |
| 1097 | break; |
| 1098 | case bfd_arch_m68k: |
| 1099 | /* `16' is the type BFD produces for a jump table relocation. */ |
| 1100 | if (rel->howto->type != 16) |
| 1101 | continue; |
| 1102 | |
| 1103 | /* Adjust address in the jump table to point to |
| 1104 | the start of the bsr instruction. */ |
| 1105 | address -= 2; |
| 1106 | break; |
| 1107 | default: |
| 1108 | continue; |
| 1109 | } |
| 1110 | |
| 1111 | name = (char *) bfd_asymbol_name (*rel->sym_ptr_ptr)((*rel->sym_ptr_ptr)->name); |
| 1112 | prim_record_minimal_symbol (name, address, mst_solib_trampoline, |
| 1113 | objfile); |
| 1114 | } |
| 1115 | |
| 1116 | do_cleanups (back_to); |
| 1117 | } |
| 1118 | |
| 1119 | #ifdef SOFUN_ADDRESS_MAYBE_MISSING |
| 1120 | static CORE_ADDR |
| 1121 | find_stab_function_addr (char *namestring, char *filename, |
| 1122 | struct objfile *objfile) |
| 1123 | { |
| 1124 | struct minimal_symbol *msym; |
| 1125 | char *p; |
| 1126 | int n; |
| 1127 | |
| 1128 | p = strchr (namestring, ':'); |
| 1129 | if (p == NULL((void*)0)) |
| 1130 | p = namestring; |
| 1131 | n = p - namestring; |
| 1132 | p = alloca (n + 2)__builtin_alloca(n + 2); |
| 1133 | strncpy (p, namestring, n); |
| 1134 | p[n] = 0; |
| 1135 | |
| 1136 | msym = lookup_minimal_symbol (p, filename, objfile); |
| 1137 | if (msym == NULL((void*)0)) |
| 1138 | { |
| 1139 | /* Sun Fortran appends an underscore to the minimal symbol name, |
| 1140 | try again with an appended underscore if the minimal symbol |
| 1141 | was not found. */ |
| 1142 | p[n] = '_'; |
| 1143 | p[n + 1] = 0; |
| 1144 | msym = lookup_minimal_symbol (p, filename, objfile); |
| 1145 | } |
| 1146 | |
| 1147 | if (msym == NULL((void*)0) && filename != NULL((void*)0)) |
| 1148 | { |
| 1149 | /* Try again without the filename. */ |
| 1150 | p[n] = 0; |
| 1151 | msym = lookup_minimal_symbol (p, NULL((void*)0), objfile); |
| 1152 | } |
| 1153 | if (msym == NULL((void*)0) && filename != NULL((void*)0)) |
| 1154 | { |
| 1155 | /* And try again for Sun Fortran, but without the filename. */ |
| 1156 | p[n] = '_'; |
| 1157 | p[n + 1] = 0; |
| 1158 | msym = lookup_minimal_symbol (p, NULL((void*)0), objfile); |
| 1159 | } |
| 1160 | |
| 1161 | return msym == NULL((void*)0) ? 0 : SYMBOL_VALUE_ADDRESS (msym)(msym)->ginfo.value.address; |
| 1162 | } |
| 1163 | #endif /* SOFUN_ADDRESS_MAYBE_MISSING */ |
| 1164 | |
| 1165 | static void |
| 1166 | function_outside_compilation_unit_complaint (const char *arg1) |
| 1167 | { |
| 1168 | complaint (&symfile_complaints, |
| 1169 | "function `%s' appears to be defined outside of all compilation units", |
| 1170 | arg1); |
| 1171 | } |
| 1172 | |
| 1173 | /* Setup partial_symtab's describing each source file for which |
| 1174 | debugging information is available. */ |
| 1175 | |
| 1176 | static void |
| 1177 | read_dbx_symtab (struct objfile *objfile) |
| 1178 | { |
| 1179 | struct external_nlist *bufp = 0; /* =0 avoids gcc -Wall glitch */ |
| 1180 | struct internal_nlist nlist; |
| 1181 | CORE_ADDR text_addr; |
| 1182 | int text_size; |
| 1183 | |
| 1184 | char *namestring; |
| 1185 | int nsl; |
| 1186 | int past_first_source_file = 0; |
| 1187 | CORE_ADDR last_o_file_start = 0; |
| 1188 | CORE_ADDR last_function_start = 0; |
| 1189 | struct cleanup *back_to; |
| 1190 | bfd *abfd; |
| 1191 | int textlow_not_set; |
| 1192 | int data_sect_index; |
| 1193 | |
| 1194 | /* Current partial symtab */ |
| 1195 | struct partial_symtab *pst; |
| 1196 | |
| 1197 | /* List of current psymtab's include files */ |
| 1198 | char **psymtab_include_list; |
| 1199 | int includes_allocated; |
| 1200 | int includes_used; |
| 1201 | |
| 1202 | /* Index within current psymtab dependency list */ |
| 1203 | struct partial_symtab **dependency_list; |
| 1204 | int dependencies_used, dependencies_allocated; |
| 1205 | |
| 1206 | text_addr = DBX_TEXT_ADDR (objfile)(((objfile)->sym_stab_info)->text_addr); |
| 1207 | text_size = DBX_TEXT_SIZE (objfile)(((objfile)->sym_stab_info)->text_size); |
| 1208 | |
| 1209 | /* FIXME. We probably want to change stringtab_global rather than add this |
| 1210 | while processing every symbol entry. FIXME. */ |
| 1211 | file_string_table_offset = 0; |
| 1212 | next_file_string_table_offset = 0; |
| 1213 | |
| 1214 | stringtab_global = DBX_STRINGTAB (objfile)(((objfile)->sym_stab_info)->stringtab); |
| 1215 | |
| 1216 | pst = (struct partial_symtab *) 0; |
| 1217 | |
| 1218 | includes_allocated = 30; |
| 1219 | includes_used = 0; |
| 1220 | psymtab_include_list = (char **) alloca (includes_allocated *__builtin_alloca(includes_allocated * sizeof (char *)) |
| 1221 | sizeof (char *))__builtin_alloca(includes_allocated * sizeof (char *)); |
| 1222 | |
| 1223 | dependencies_allocated = 30; |
| 1224 | dependencies_used = 0; |
| 1225 | dependency_list = |
| 1226 | (struct partial_symtab **) alloca (dependencies_allocated *__builtin_alloca(dependencies_allocated * sizeof (struct partial_symtab *)) |
| 1227 | sizeof (struct partial_symtab *))__builtin_alloca(dependencies_allocated * sizeof (struct partial_symtab *)); |
| 1228 | |
| 1229 | /* Init bincl list */ |
| 1230 | init_bincl_list (20, objfile); |
| 1231 | back_to = make_cleanup_free_bincl_list (objfile); |
| 1232 | |
| 1233 | last_source_file = NULL((void*)0); |
| 1234 | |
| 1235 | lowest_text_address = (CORE_ADDR) -1; |
| 1236 | |
| 1237 | symfile_bfd = objfile->obfd; /* For next_text_symbol */ |
| 1238 | abfd = objfile->obfd; |
| 1239 | symbuf_end = symbuf_idx = 0; |
| 1240 | next_symbol_text_func = dbx_next_symbol_text; |
| 1241 | textlow_not_set = 1; |
| 1242 | has_line_numbers = 0; |
| 1243 | |
| 1244 | /* FIXME: jimb/2003-09-12: We don't apply the right section's offset |
| 1245 | to global and static variables. The stab for a global or static |
| 1246 | variable doesn't give us any indication of which section it's in, |
| 1247 | so we can't tell immediately which offset in |
| 1248 | objfile->section_offsets we should apply to the variable's |
| 1249 | address. |
| 1250 | |
| 1251 | We could certainly find out which section contains the variable |
| 1252 | by looking up the variable's unrelocated address with |
| 1253 | find_pc_section, but that would be expensive; this is the |
| 1254 | function that constructs the partial symbol tables by examining |
| 1255 | every symbol in the entire executable, and it's |
| 1256 | performance-critical. So that expense would not be welcome. I'm |
| 1257 | not sure what to do about this at the moment. |
| 1258 | |
| 1259 | What we have done for years is to simply assume that the .data |
| 1260 | section's offset is appropriate for all global and static |
| 1261 | variables. Recently, this was expanded to fall back to the .bss |
| 1262 | section's offset if there is no .data section, and then to the |
| 1263 | .rodata section's offset. */ |
| 1264 | data_sect_index = objfile->sect_index_data; |
| 1265 | if (data_sect_index == -1) |
| 1266 | data_sect_index = SECT_OFF_BSS (objfile)(objfile)->sect_index_bss; |
| 1267 | if (data_sect_index == -1) |
| 1268 | data_sect_index = SECT_OFF_RODATA (objfile)((objfile->sect_index_rodata == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1268, "sect_index_rodata not initialized"), -1) : objfile-> sect_index_rodata); |
| 1269 | |
| 1270 | /* If data_sect_index is still -1, that's okay. It's perfectly fine |
| 1271 | for the file to have no .data, no .bss, and no .text at all, if |
| 1272 | it also has no global or static variables. If it does, we will |
| 1273 | get an internal error from an ANOFFSET macro below when we try to |
| 1274 | use data_sect_index. */ |
| 1275 | |
| 1276 | for (symnum = 0; symnum < DBX_SYMCOUNT (objfile)(((objfile)->sym_stab_info)->symcount); symnum++) |
| 1277 | { |
| 1278 | /* Get the symbol for this run and pull out some info */ |
| 1279 | QUIT{ if (quit_flag) quit (); if (deprecated_interactive_hook) deprecated_interactive_hook (); }; /* allow this to be interruptable */ |
| 1280 | if (symbuf_idx == symbuf_end) |
| 1281 | fill_symbuf (abfd); |
| 1282 | bufp = &symbuf[symbuf_idx++]; |
| 1283 | |
| 1284 | /* |
| 1285 | * Special case to speed up readin. |
| 1286 | */ |
| 1287 | if (bfd_h_get_8 (abfd, bufp->e_type)(*(unsigned char *) (bufp->e_type) & 0xff) == N_SLINE) |
| 1288 | { |
| 1289 | has_line_numbers = 1; |
| 1290 | continue; |
| 1291 | } |
| 1292 | |
| 1293 | INTERNALIZE_SYMBOL (nlist, bufp, abfd){ (nlist).n_type = (*(unsigned char *) ((bufp)->e_type) & 0xff); (nlist).n_strx = ((*((abfd)->xvec->bfd_h_getx32 )) ((bufp)->e_strx)); (nlist).n_desc = ((*((abfd)->xvec ->bfd_h_getx16)) ((bufp)->e_desc)); if (bfd_get_sign_extend_vma (abfd)) (nlist).n_value = ((*((abfd)->xvec->bfd_h_getx_signed_32 )) ((bufp)->e_value)); else (nlist).n_value = ((*((abfd)-> xvec->bfd_h_getx32)) ((bufp)->e_value)); }; |
| 1294 | OBJSTAT (objfile, n_stabs++)(objfile -> stats.n_stabs++); |
| 1295 | |
| 1296 | /* Ok. There is a lot of code duplicated in the rest of this |
| 1297 | switch statement (for efficiency reasons). Since I don't |
| 1298 | like duplicating code, I will do my penance here, and |
| 1299 | describe the code which is duplicated: |
| 1300 | |
| 1301 | *) The assignment to namestring. |
| 1302 | *) The call to strchr. |
| 1303 | *) The addition of a partial symbol the the two partial |
| 1304 | symbol lists. This last is a large section of code, so |
| 1305 | I've imbedded it in the following macro. |
| 1306 | */ |
| 1307 | |
| 1308 | switch (nlist.n_type) |
| 1309 | { |
| 1310 | char *p; |
| 1311 | /* |
| 1312 | * Standard, external, non-debugger, symbols |
| 1313 | */ |
| 1314 | |
| 1315 | case N_TEXT4 | N_EXT1: |
| 1316 | case N_NBTEXT | N_EXT1: |
| 1317 | nlist.n_value += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile))((((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1317, "sect_index_text not initialized"), -1) : objfile-> sect_index_text) == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1317, "Section index is uninitialized"), -1) : objfile-> section_offsets->offsets[((objfile->sect_index_text == - 1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1317, "sect_index_text not initialized"), -1) : objfile-> sect_index_text)]); |
| 1318 | goto record_it; |
| 1319 | |
| 1320 | case N_DATA6 | N_EXT1: |
| 1321 | case N_NBDATA | N_EXT1: |
| 1322 | nlist.n_value += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile))((((objfile->sect_index_data == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1322, "sect_index_data not initialized"), -1) : objfile-> sect_index_data) == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1322, "Section index is uninitialized"), -1) : objfile-> section_offsets->offsets[((objfile->sect_index_data == - 1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1322, "sect_index_data not initialized"), -1) : objfile-> sect_index_data)]); |
| 1323 | goto record_it; |
| 1324 | |
| 1325 | case N_BSS8: |
| 1326 | case N_BSS8 | N_EXT1: |
| 1327 | case N_NBBSS | N_EXT1: |
| 1328 | case N_SETV0x1C | N_EXT1: /* FIXME, is this in BSS? */ |
| 1329 | nlist.n_value += ANOFFSET (objfile->section_offsets, SECT_OFF_BSS (objfile))(((objfile)->sect_index_bss == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1329, "Section index is uninitialized"), -1) : objfile-> section_offsets->offsets[(objfile)->sect_index_bss]); |
| 1330 | goto record_it; |
| 1331 | |
| 1332 | case N_ABS2 | N_EXT1: |
| 1333 | record_it: |
| 1334 | namestring = set_namestring (objfile, nlist); |
| 1335 | |
| 1336 | bss_ext_symbol: |
| 1337 | record_minimal_symbol (namestring, nlist.n_value, |
| 1338 | nlist.n_type, objfile); /* Always */ |
| 1339 | continue; |
| 1340 | |
| 1341 | /* Standard, local, non-debugger, symbols */ |
| 1342 | |
| 1343 | case N_NBTEXT: |
| 1344 | |
| 1345 | /* We need to be able to deal with both N_FN or N_TEXT, |
| 1346 | because we have no way of knowing whether the sys-supplied ld |
| 1347 | or GNU ld was used to make the executable. Sequents throw |
| 1348 | in another wrinkle -- they renumbered N_FN. */ |
| 1349 | |
| 1350 | case N_FN0x1f: |
| 1351 | case N_FN_SEQ0x0C: |
| 1352 | case N_TEXT4: |
| 1353 | nlist.n_value += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile))((((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1353, "sect_index_text not initialized"), -1) : objfile-> sect_index_text) == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1353, "Section index is uninitialized"), -1) : objfile-> section_offsets->offsets[((objfile->sect_index_text == - 1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1353, "sect_index_text not initialized"), -1) : objfile-> sect_index_text)]); |
| 1354 | namestring = set_namestring (objfile, nlist); |
| 1355 | |
| 1356 | if ((namestring[0] == '-' && namestring[1] == 'l') |
| 1357 | || (namestring[(nsl = strlen (namestring)) - 1] == 'o' |
| 1358 | && namestring[nsl - 2] == '.')) |
| 1359 | { |
| 1360 | if (past_first_source_file && pst |
| 1361 | /* The gould NP1 uses low values for .o and -l symbols |
| 1362 | which are not the address. */ |
| 1363 | && nlist.n_value >= pst->textlow) |
| 1364 | { |
| 1365 | end_psymtab (pst, psymtab_include_list, includes_used, |
| 1366 | symnum * symbol_size, |
| 1367 | nlist.n_value > pst->texthigh |
| 1368 | ? nlist.n_value : pst->texthigh, |
| 1369 | dependency_list, dependencies_used, textlow_not_set); |
| 1370 | pst = (struct partial_symtab *) 0; |
| 1371 | includes_used = 0; |
| 1372 | dependencies_used = 0; |
| 1373 | } |
| 1374 | else |
| 1375 | past_first_source_file = 1; |
| 1376 | last_o_file_start = nlist.n_value; |
| 1377 | } |
| 1378 | else |
| 1379 | goto record_it; |
| 1380 | continue; |
| 1381 | |
| 1382 | case N_DATA6: |
| 1383 | nlist.n_value += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile))((((objfile->sect_index_data == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1383, "sect_index_data not initialized"), -1) : objfile-> sect_index_data) == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1383, "Section index is uninitialized"), -1) : objfile-> section_offsets->offsets[((objfile->sect_index_data == - 1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1383, "sect_index_data not initialized"), -1) : objfile-> sect_index_data)]); |
| 1384 | goto record_it; |
| 1385 | |
| 1386 | case N_UNDF0 | N_EXT1: |
| 1387 | if (nlist.n_value != 0) |
| 1388 | { |
| 1389 | /* This is a "Fortran COMMON" symbol. See if the target |
| 1390 | environment knows where it has been relocated to. */ |
| 1391 | |
| 1392 | CORE_ADDR reladdr; |
| 1393 | |
| 1394 | namestring = set_namestring (objfile, nlist); |
| 1395 | if (target_lookup_symbol (namestring, &reladdr)(*current_target.to_lookup_symbol) (namestring, &reladdr)) |
| 1396 | { |
| 1397 | continue; /* Error in lookup; ignore symbol for now. */ |
| 1398 | } |
| 1399 | nlist.n_type ^= (N_BSS8 ^ N_UNDF0); /* Define it as a bss-symbol */ |
| 1400 | nlist.n_value = reladdr; |
| 1401 | goto bss_ext_symbol; |
| 1402 | } |
| 1403 | continue; /* Just undefined, not COMMON */ |
| 1404 | |
| 1405 | case N_UNDF0: |
| 1406 | if (processing_acc_compilation && nlist.n_strx == 1) |
| 1407 | { |
| 1408 | /* Deal with relative offsets in the string table |
| 1409 | used in ELF+STAB under Solaris. If we want to use the |
| 1410 | n_strx field, which contains the name of the file, |
| 1411 | we must adjust file_string_table_offset *before* calling |
| 1412 | set_namestring(). */ |
| 1413 | past_first_source_file = 1; |
| 1414 | file_string_table_offset = next_file_string_table_offset; |
| 1415 | next_file_string_table_offset = |
| 1416 | file_string_table_offset + nlist.n_value; |
| 1417 | if (next_file_string_table_offset < file_string_table_offset) |
| 1418 | error ("string table offset backs up at %d", symnum); |
| 1419 | /* FIXME -- replace error() with complaint. */ |
| 1420 | continue; |
| 1421 | } |
| 1422 | continue; |
| 1423 | |
| 1424 | /* Lots of symbol types we can just ignore. */ |
| 1425 | |
| 1426 | case N_ABS2: |
| 1427 | case N_NBDATA: |
| 1428 | case N_NBBSS: |
| 1429 | continue; |
| 1430 | |
| 1431 | /* Keep going . . . */ |
| 1432 | |
| 1433 | /* |
| 1434 | * Special symbol types for GNU |
| 1435 | */ |
| 1436 | case N_INDR0x0a: |
| 1437 | case N_INDR0x0a | N_EXT1: |
| 1438 | case N_SETA0x14: |
| 1439 | case N_SETA0x14 | N_EXT1: |
| 1440 | case N_SETT0x16: |
| 1441 | case N_SETT0x16 | N_EXT1: |
| 1442 | case N_SETD0x18: |
| 1443 | case N_SETD0x18 | N_EXT1: |
| 1444 | case N_SETB0x1A: |
| 1445 | case N_SETB0x1A | N_EXT1: |
| 1446 | case N_SETV0x1C: |
| 1447 | continue; |
| 1448 | |
| 1449 | /* |
| 1450 | * Debugger symbols |
| 1451 | */ |
| 1452 | |
| 1453 | case N_SO: |
| 1454 | { |
| 1455 | CORE_ADDR valu; |
| 1456 | static int prev_so_symnum = -10; |
| 1457 | static int first_so_symnum; |
| 1458 | char *p; |
| 1459 | static char *dirname_nso; |
| 1460 | int prev_textlow_not_set; |
| 1461 | |
| 1462 | valu = nlist.n_value + ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile))((((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1462, "sect_index_text not initialized"), -1) : objfile-> sect_index_text) == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1462, "Section index is uninitialized"), -1) : objfile-> section_offsets->offsets[((objfile->sect_index_text == - 1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1462, "sect_index_text not initialized"), -1) : objfile-> sect_index_text)]); |
| 1463 | |
| 1464 | prev_textlow_not_set = textlow_not_set; |
| 1465 | |
| 1466 | #ifdef SOFUN_ADDRESS_MAYBE_MISSING |
| 1467 | /* A zero value is probably an indication for the SunPRO 3.0 |
| 1468 | compiler. end_psymtab explicitly tests for zero, so |
| 1469 | don't relocate it. */ |
| 1470 | |
| 1471 | if (nlist.n_value == 0) |
| 1472 | { |
| 1473 | textlow_not_set = 1; |
| 1474 | valu = 0; |
| 1475 | } |
| 1476 | else |
| 1477 | textlow_not_set = 0; |
| 1478 | #else |
| 1479 | textlow_not_set = 0; |
| 1480 | #endif |
| 1481 | past_first_source_file = 1; |
| 1482 | |
| 1483 | if (prev_so_symnum != symnum - 1) |
| 1484 | { /* Here if prev stab wasn't N_SO */ |
| 1485 | first_so_symnum = symnum; |
| 1486 | |
| 1487 | if (pst) |
| 1488 | { |
| 1489 | end_psymtab (pst, psymtab_include_list, includes_used, |
| 1490 | symnum * symbol_size, |
| 1491 | valu > pst->texthigh ? valu : pst->texthigh, |
| 1492 | dependency_list, dependencies_used, |
| 1493 | prev_textlow_not_set); |
| 1494 | pst = (struct partial_symtab *) 0; |
| 1495 | includes_used = 0; |
| 1496 | dependencies_used = 0; |
| 1497 | } |
| 1498 | } |
| 1499 | |
| 1500 | prev_so_symnum = symnum; |
| 1501 | |
| 1502 | /* End the current partial symtab and start a new one */ |
| 1503 | |
| 1504 | namestring = set_namestring (objfile, nlist); |
| 1505 | |
| 1506 | /* Null name means end of .o file. Don't start a new one. */ |
| 1507 | if (*namestring == '\000') |
| 1508 | continue; |
| 1509 | |
| 1510 | /* Some compilers (including gcc) emit a pair of initial N_SOs. |
| 1511 | The first one is a directory name; the second the file name. |
| 1512 | If pst exists, is empty, and has a filename ending in '/', |
| 1513 | we assume the previous N_SO was a directory name. */ |
| 1514 | |
| 1515 | p = strrchr (namestring, '/'); |
| 1516 | if (p && *(p + 1) == '\000') |
| 1517 | { |
| 1518 | /* Save the directory name SOs locally, then save it into |
| 1519 | the psymtab when it's created below. */ |
| 1520 | dirname_nso = namestring; |
| 1521 | continue; |
| 1522 | } |
| 1523 | |
| 1524 | /* Some other compilers (C++ ones in particular) emit useless |
| 1525 | SOs for non-existant .c files. We ignore all subsequent SOs that |
| 1526 | immediately follow the first. */ |
| 1527 | |
| 1528 | if (!pst) |
| 1529 | { |
| 1530 | pst = start_psymtab (objfile, |
| 1531 | namestring, valu, |
| 1532 | first_so_symnum * symbol_size, |
| 1533 | objfile->global_psymbols.next, |
| 1534 | objfile->static_psymbols.next); |
| 1535 | pst->dirname = dirname_nso; |
| 1536 | dirname_nso = NULL((void*)0); |
| 1537 | } |
| 1538 | continue; |
| 1539 | } |
| 1540 | |
| 1541 | case N_BINCL: |
| 1542 | { |
| 1543 | enum language tmp_language; |
| 1544 | /* Add this bincl to the bincl_list for future EXCLs. No |
| 1545 | need to save the string; it'll be around until |
| 1546 | read_dbx_symtab function returns */ |
| 1547 | |
| 1548 | namestring = set_namestring (objfile, nlist); |
| 1549 | tmp_language = deduce_language_from_filename (namestring); |
| 1550 | |
| 1551 | /* Only change the psymtab's language if we've learned |
| 1552 | something useful (eg. tmp_language is not language_unknown). |
| 1553 | In addition, to match what start_subfile does, never change |
| 1554 | from C++ to C. */ |
| 1555 | if (tmp_language != language_unknown |
| 1556 | && (tmp_language != language_c |
| 1557 | || psymtab_language != language_cplus)) |
| 1558 | psymtab_language = tmp_language; |
| 1559 | |
| 1560 | if (pst == NULL((void*)0)) |
| 1561 | { |
| 1562 | /* FIXME: we should not get here without a PST to work on. |
| 1563 | Attempt to recover. */ |
| 1564 | complaint (&symfile_complaints, |
| 1565 | "N_BINCL %s not in entries for any file, at symtab pos %d", |
| 1566 | namestring, symnum); |
| 1567 | continue; |
| 1568 | } |
| 1569 | add_bincl_to_list (pst, namestring, nlist.n_value); |
| 1570 | |
| 1571 | /* Mark down an include file in the current psymtab */ |
| 1572 | |
| 1573 | goto record_include_file; |
| 1574 | } |
| 1575 | |
| 1576 | case N_SOL: |
| 1577 | { |
| 1578 | enum language tmp_language; |
| 1579 | /* Mark down an include file in the current psymtab */ |
| 1580 | |
| 1581 | namestring = set_namestring (objfile, nlist); |
| 1582 | tmp_language = deduce_language_from_filename (namestring); |
| 1583 | |
| 1584 | /* Only change the psymtab's language if we've learned |
| 1585 | something useful (eg. tmp_language is not language_unknown). |
| 1586 | In addition, to match what start_subfile does, never change |
| 1587 | from C++ to C. */ |
| 1588 | if (tmp_language != language_unknown |
| 1589 | && (tmp_language != language_c |
| 1590 | || psymtab_language != language_cplus)) |
| 1591 | psymtab_language = tmp_language; |
| 1592 | |
| 1593 | /* In C++, one may expect the same filename to come round many |
| 1594 | times, when code is coming alternately from the main file |
| 1595 | and from inline functions in other files. So I check to see |
| 1596 | if this is a file we've seen before -- either the main |
| 1597 | source file, or a previously included file. |
| 1598 | |
| 1599 | This seems to be a lot of time to be spending on N_SOL, but |
| 1600 | things like "break c-exp.y:435" need to work (I |
| 1601 | suppose the psymtab_include_list could be hashed or put |
| 1602 | in a binary tree, if profiling shows this is a major hog). */ |
| 1603 | if (pst && strcmp (namestring, pst->filename) == 0) |
| 1604 | continue; |
| 1605 | { |
| 1606 | int i; |
| 1607 | for (i = 0; i < includes_used; i++) |
| 1608 | if (strcmp (namestring, psymtab_include_list[i]) == 0) |
| 1609 | { |
| 1610 | i = -1; |
| 1611 | break; |
| 1612 | } |
| 1613 | if (i == -1) |
| 1614 | continue; |
| 1615 | } |
| 1616 | |
| 1617 | record_include_file: |
| 1618 | |
| 1619 | psymtab_include_list[includes_used++] = namestring; |
| 1620 | if (includes_used >= includes_allocated) |
| 1621 | { |
| 1622 | char **orig = psymtab_include_list; |
| 1623 | |
| 1624 | psymtab_include_list = (char **) |
| 1625 | alloca ((includes_allocated *= 2) *__builtin_alloca((includes_allocated *= 2) * sizeof (char *)) |
| 1626 | sizeof (char *))__builtin_alloca((includes_allocated *= 2) * sizeof (char *)); |
| 1627 | memcpy (psymtab_include_list, orig, |
| 1628 | includes_used * sizeof (char *)); |
| 1629 | } |
| 1630 | continue; |
| 1631 | } |
| 1632 | case N_LSYM: /* Typedef or automatic variable. */ |
| 1633 | case N_STSYM: /* Data seg var -- static */ |
| 1634 | case N_LCSYM: /* BSS " */ |
| 1635 | case N_ROSYM: /* Read-only data seg var -- static. */ |
| 1636 | case N_NBSTS: /* Gould nobase. */ |
| 1637 | case N_NBLCS: /* symbols. */ |
| 1638 | case N_FUN: |
| 1639 | case N_GSYM: /* Global (extern) variable; can be |
| 1640 | data or bss (sigh FIXME). */ |
| 1641 | |
| 1642 | /* Following may probably be ignored; I'll leave them here |
| 1643 | for now (until I do Pascal and Modula 2 extensions). */ |
| 1644 | |
| 1645 | case N_PC: /* I may or may not need this; I |
| 1646 | suspect not. */ |
| 1647 | case N_M2C: /* I suspect that I can ignore this here. */ |
| 1648 | case N_SCOPE: /* Same. */ |
| 1649 | |
| 1650 | namestring = set_namestring (objfile, nlist); |
| 1651 | |
| 1652 | /* See if this is an end of function stab. */ |
| 1653 | if (pst && nlist.n_type == N_FUN && *namestring == '\000') |
| 1654 | { |
| 1655 | CORE_ADDR valu; |
| 1656 | |
| 1657 | /* It's value is the size (in bytes) of the function for |
| 1658 | function relative stabs, or the address of the function's |
| 1659 | end for old style stabs. */ |
| 1660 | valu = nlist.n_value + last_function_start; |
| 1661 | if (pst->texthigh == 0 || valu > pst->texthigh) |
| 1662 | pst->texthigh = valu; |
| 1663 | break; |
| 1664 | } |
| 1665 | |
| 1666 | p = (char *) strchr (namestring, ':'); |
| 1667 | if (!p) |
| 1668 | continue; /* Not a debugging symbol. */ |
| 1669 | |
| 1670 | |
| 1671 | |
| 1672 | /* Main processing section for debugging symbols which |
| 1673 | the initial read through the symbol tables needs to worry |
| 1674 | about. If we reach this point, the symbol which we are |
| 1675 | considering is definitely one we are interested in. |
| 1676 | p must also contain the (valid) index into the namestring |
| 1677 | which indicates the debugging type symbol. */ |
| 1678 | |
| 1679 | switch (p[1]) |
| 1680 | { |
| 1681 | case 'S': |
| 1682 | nlist.n_value += ANOFFSET (objfile->section_offsets, data_sect_index)((data_sect_index == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1682, "Section index is uninitialized"), -1) : objfile-> section_offsets->offsets[data_sect_index]); |
| 1683 | #ifdef STATIC_TRANSFORM_NAME |
| 1684 | namestring = STATIC_TRANSFORM_NAME (namestring); |
| 1685 | #endif |
| 1686 | add_psymbol_to_list (namestring, p - namestring, |
| 1687 | VAR_DOMAIN, LOC_STATIC, |
| 1688 | &objfile->static_psymbols, |
| 1689 | 0, nlist.n_value, |
| 1690 | psymtab_language, objfile); |
| 1691 | continue; |
| 1692 | case 'G': |
| 1693 | nlist.n_value += ANOFFSET (objfile->section_offsets, data_sect_index)((data_sect_index == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1693, "Section index is uninitialized"), -1) : objfile-> section_offsets->offsets[data_sect_index]); |
| 1694 | /* The addresses in these entries are reported to be |
| 1695 | wrong. See the code that reads 'G's for symtabs. */ |
| 1696 | add_psymbol_to_list (namestring, p - namestring, |
| 1697 | VAR_DOMAIN, LOC_STATIC, |
| 1698 | &objfile->global_psymbols, |
| 1699 | 0, nlist.n_value, |
| 1700 | psymtab_language, objfile); |
| 1701 | continue; |
| 1702 | |
| 1703 | case 'T': |
| 1704 | /* When a 'T' entry is defining an anonymous enum, it |
| 1705 | may have a name which is the empty string, or a |
| 1706 | single space. Since they're not really defining a |
| 1707 | symbol, those shouldn't go in the partial symbol |
| 1708 | table. We do pick up the elements of such enums at |
| 1709 | 'check_enum:', below. */ |
| 1710 | if (p >= namestring + 2 |
| 1711 | || (p == namestring + 1 |
| 1712 | && namestring[0] != ' ')) |
| 1713 | { |
| 1714 | add_psymbol_to_list (namestring, p - namestring, |
| 1715 | STRUCT_DOMAIN, LOC_TYPEDEF, |
| 1716 | &objfile->static_psymbols, |
| 1717 | nlist.n_value, 0, |
| 1718 | psymtab_language, objfile); |
| 1719 | if (p[2] == 't') |
| 1720 | { |
| 1721 | /* Also a typedef with the same name. */ |
| 1722 | add_psymbol_to_list (namestring, p - namestring, |
| 1723 | VAR_DOMAIN, LOC_TYPEDEF, |
| 1724 | &objfile->static_psymbols, |
| 1725 | nlist.n_value, 0, |
| 1726 | psymtab_language, objfile); |
| 1727 | p += 1; |
| 1728 | } |
| 1729 | } |
| 1730 | goto check_enum; |
| 1731 | case 't': |
| 1732 | if (p != namestring) /* a name is there, not just :T... */ |
| 1733 | { |
| 1734 | add_psymbol_to_list (namestring, p - namestring, |
| 1735 | VAR_DOMAIN, LOC_TYPEDEF, |
| 1736 | &objfile->static_psymbols, |
| 1737 | nlist.n_value, 0, |
| 1738 | psymtab_language, objfile); |
| 1739 | } |
| 1740 | check_enum: |
| 1741 | /* If this is an enumerated type, we need to |
| 1742 | add all the enum constants to the partial symbol |
| 1743 | table. This does not cover enums without names, e.g. |
| 1744 | "enum {a, b} c;" in C, but fortunately those are |
| 1745 | rare. There is no way for GDB to find those from the |
| 1746 | enum type without spending too much time on it. Thus |
| 1747 | to solve this problem, the compiler needs to put out the |
| 1748 | enum in a nameless type. GCC2 does this. */ |
| 1749 | |
| 1750 | /* We are looking for something of the form |
| 1751 | <name> ":" ("t" | "T") [<number> "="] "e" |
| 1752 | {<constant> ":" <value> ","} ";". */ |
| 1753 | |
| 1754 | /* Skip over the colon and the 't' or 'T'. */ |
| 1755 | p += 2; |
| 1756 | /* This type may be given a number. Also, numbers can come |
| 1757 | in pairs like (0,26). Skip over it. */ |
| 1758 | while ((*p >= '0' && *p <= '9') |
| 1759 | || *p == '(' || *p == ',' || *p == ')' |
| 1760 | || *p == '=') |
| 1761 | p++; |
| 1762 | |
| 1763 | if (*p++ == 'e') |
| 1764 | { |
| 1765 | /* The aix4 compiler emits extra crud before the members. */ |
| 1766 | if (*p == '-') |
| 1767 | { |
| 1768 | /* Skip over the type (?). */ |
| 1769 | while (*p != ':') |
| 1770 | p++; |
| 1771 | |
| 1772 | /* Skip over the colon. */ |
| 1773 | p++; |
| 1774 | } |
| 1775 | |
| 1776 | /* We have found an enumerated type. */ |
| 1777 | /* According to comments in read_enum_type |
| 1778 | a comma could end it instead of a semicolon. |
| 1779 | I don't know where that happens. |
| 1780 | Accept either. */ |
| 1781 | while (*p && *p != ';' && *p != ',') |
| 1782 | { |
| 1783 | char *q; |
| 1784 | |
| 1785 | /* Check for and handle cretinous dbx symbol name |
| 1786 | continuation! */ |
| 1787 | if (*p == '\\' || (*p == '?' && p[1] == '\0')) |
| 1788 | p = next_symbol_text (objfile)(*next_symbol_text_func)(objfile); |
| 1789 | |
| 1790 | /* Point to the character after the name |
| 1791 | of the enum constant. */ |
| 1792 | for (q = p; *q && *q != ':'; q++) |
| 1793 | ; |
| 1794 | /* Note that the value doesn't matter for |
| 1795 | enum constants in psymtabs, just in symtabs. */ |
| 1796 | add_psymbol_to_list (p, q - p, |
| 1797 | VAR_DOMAIN, LOC_CONST, |
| 1798 | &objfile->static_psymbols, 0, |
| 1799 | 0, psymtab_language, objfile); |
| 1800 | /* Point past the name. */ |
| 1801 | p = q; |
| 1802 | /* Skip over the value. */ |
| 1803 | while (*p && *p != ',') |
| 1804 | p++; |
| 1805 | /* Advance past the comma. */ |
| 1806 | if (*p) |
| 1807 | p++; |
| 1808 | } |
| 1809 | } |
| 1810 | continue; |
| 1811 | case 'c': |
| 1812 | /* Constant, e.g. from "const" in Pascal. */ |
| 1813 | add_psymbol_to_list (namestring, p - namestring, |
| 1814 | VAR_DOMAIN, LOC_CONST, |
| 1815 | &objfile->static_psymbols, nlist.n_value, |
| 1816 | 0, psymtab_language, objfile); |
| 1817 | continue; |
| 1818 | |
| 1819 | case 'f': |
| 1820 | if (! pst) |
| 1821 | { |
| 1822 | int name_len = p - namestring; |
| 1823 | char *name = xmalloc (name_len + 1); |
| 1824 | memcpy (name, namestring, name_len); |
| 1825 | name[name_len] = '\0'; |
| 1826 | function_outside_compilation_unit_complaint (name); |
| 1827 | xfree (name); |
| 1828 | } |
| 1829 | nlist.n_value += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile))((((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1829, "sect_index_text not initialized"), -1) : objfile-> sect_index_text) == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1829, "Section index is uninitialized"), -1) : objfile-> section_offsets->offsets[((objfile->sect_index_text == - 1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1829, "sect_index_text not initialized"), -1) : objfile-> sect_index_text)]); |
| 1830 | /* Kludges for ELF/STABS with Sun ACC */ |
| 1831 | last_function_name = namestring; |
| 1832 | #ifdef SOFUN_ADDRESS_MAYBE_MISSING |
| 1833 | /* Do not fix textlow==0 for .o or NLM files, as 0 is a legit |
| 1834 | value for the bottom of the text seg in those cases. */ |
| 1835 | if (nlist.n_value == ANOFFSET (objfile->section_offsets,((((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1836, "sect_index_text not initialized"), -1) : objfile-> sect_index_text) == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1836, "Section index is uninitialized"), -1) : objfile-> section_offsets->offsets[((objfile->sect_index_text == - 1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1836, "sect_index_text not initialized"), -1) : objfile-> sect_index_text)]) |
| 1836 | SECT_OFF_TEXT (objfile))((((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1836, "sect_index_text not initialized"), -1) : objfile-> sect_index_text) == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1836, "Section index is uninitialized"), -1) : objfile-> section_offsets->offsets[((objfile->sect_index_text == - 1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1836, "sect_index_text not initialized"), -1) : objfile-> sect_index_text)])) |
| 1837 | { |
| 1838 | CORE_ADDR minsym_valu = |
| 1839 | find_stab_function_addr (namestring, pst->filename, objfile); |
| 1840 | /* find_stab_function_addr will return 0 if the minimal |
| 1841 | symbol wasn't found. (Unfortunately, this might also |
| 1842 | be a valid address.) Anyway, if it *does* return 0, |
| 1843 | it is likely that the value was set correctly to begin |
| 1844 | with... */ |
| 1845 | if (minsym_valu != 0) |
| 1846 | nlist.n_value = minsym_valu; |
| 1847 | } |
| 1848 | if (pst && textlow_not_set) |
| 1849 | { |
| 1850 | pst->textlow = nlist.n_value; |
| 1851 | textlow_not_set = 0; |
| 1852 | } |
| 1853 | #endif |
| 1854 | /* End kludge. */ |
| 1855 | |
| 1856 | /* Keep track of the start of the last function so we |
| 1857 | can handle end of function symbols. */ |
| 1858 | last_function_start = nlist.n_value; |
| 1859 | |
| 1860 | /* In reordered executables this function may lie outside |
| 1861 | the bounds created by N_SO symbols. If that's the case |
| 1862 | use the address of this function as the low bound for |
| 1863 | the partial symbol table. */ |
| 1864 | if (pst |
| 1865 | && (textlow_not_set |
| 1866 | || (nlist.n_value < pst->textlow |
| 1867 | && (nlist.n_value |
| 1868 | != ANOFFSET (objfile->section_offsets,((((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1869, "sect_index_text not initialized"), -1) : objfile-> sect_index_text) == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1869, "Section index is uninitialized"), -1) : objfile-> section_offsets->offsets[((objfile->sect_index_text == - 1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1869, "sect_index_text not initialized"), -1) : objfile-> sect_index_text)]) |
| 1869 | SECT_OFF_TEXT (objfile))((((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1869, "sect_index_text not initialized"), -1) : objfile-> sect_index_text) == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1869, "Section index is uninitialized"), -1) : objfile-> section_offsets->offsets[((objfile->sect_index_text == - 1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1869, "sect_index_text not initialized"), -1) : objfile-> sect_index_text)]))))) |
| 1870 | { |
| 1871 | pst->textlow = nlist.n_value; |
| 1872 | textlow_not_set = 0; |
| 1873 | } |
| 1874 | add_psymbol_to_list (namestring, p - namestring, |
| 1875 | VAR_DOMAIN, LOC_BLOCK, |
| 1876 | &objfile->static_psymbols, |
| 1877 | 0, nlist.n_value, |
| 1878 | psymtab_language, objfile); |
| 1879 | continue; |
| 1880 | |
| 1881 | /* Global functions were ignored here, but now they |
| 1882 | are put into the global psymtab like one would expect. |
| 1883 | They're also in the minimal symbol table. */ |
| 1884 | case 'F': |
| 1885 | if (! pst) |
| 1886 | { |
| 1887 | int name_len = p - namestring; |
| 1888 | char *name = xmalloc (name_len + 1); |
| 1889 | memcpy (name, namestring, name_len); |
| 1890 | name[name_len] = '\0'; |
| 1891 | function_outside_compilation_unit_complaint (name); |
| 1892 | xfree (name); |
| 1893 | } |
| 1894 | nlist.n_value += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile))((((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1894, "sect_index_text not initialized"), -1) : objfile-> sect_index_text) == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1894, "Section index is uninitialized"), -1) : objfile-> section_offsets->offsets[((objfile->sect_index_text == - 1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1894, "sect_index_text not initialized"), -1) : objfile-> sect_index_text)]); |
| 1895 | /* Kludges for ELF/STABS with Sun ACC */ |
| 1896 | last_function_name = namestring; |
| 1897 | #ifdef SOFUN_ADDRESS_MAYBE_MISSING |
| 1898 | /* Do not fix textlow==0 for .o or NLM files, as 0 is a legit |
| 1899 | value for the bottom of the text seg in those cases. */ |
| 1900 | if (nlist.n_value == ANOFFSET (objfile->section_offsets,((((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1901, "sect_index_text not initialized"), -1) : objfile-> sect_index_text) == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1901, "Section index is uninitialized"), -1) : objfile-> section_offsets->offsets[((objfile->sect_index_text == - 1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1901, "sect_index_text not initialized"), -1) : objfile-> sect_index_text)]) |
| 1901 | SECT_OFF_TEXT (objfile))((((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1901, "sect_index_text not initialized"), -1) : objfile-> sect_index_text) == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1901, "Section index is uninitialized"), -1) : objfile-> section_offsets->offsets[((objfile->sect_index_text == - 1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1901, "sect_index_text not initialized"), -1) : objfile-> sect_index_text)])) |
| 1902 | { |
| 1903 | CORE_ADDR minsym_valu = |
| 1904 | find_stab_function_addr (namestring, pst->filename, objfile); |
| 1905 | /* find_stab_function_addr will return 0 if the minimal |
| 1906 | symbol wasn't found. (Unfortunately, this might also |
| 1907 | be a valid address.) Anyway, if it *does* return 0, |
| 1908 | it is likely that the value was set correctly to begin |
| 1909 | with... */ |
| 1910 | if (minsym_valu != 0) |
| 1911 | nlist.n_value = minsym_valu; |
| 1912 | } |
| 1913 | if (pst && textlow_not_set) |
| 1914 | { |
| 1915 | pst->textlow = nlist.n_value; |
| 1916 | textlow_not_set = 0; |
| 1917 | } |
| 1918 | #endif |
| 1919 | /* End kludge. */ |
| 1920 | |
| 1921 | /* Keep track of the start of the last function so we |
| 1922 | can handle end of function symbols. */ |
| 1923 | last_function_start = nlist.n_value; |
| 1924 | |
| 1925 | /* In reordered executables this function may lie outside |
| 1926 | the bounds created by N_SO symbols. If that's the case |
| 1927 | use the address of this function as the low bound for |
| 1928 | the partial symbol table. */ |
| 1929 | if (pst |
| 1930 | && (textlow_not_set |
| 1931 | || (nlist.n_value < pst->textlow |
| 1932 | && (nlist.n_value |
| 1933 | != ANOFFSET (objfile->section_offsets,((((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1934, "sect_index_text not initialized"), -1) : objfile-> sect_index_text) == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1934, "Section index is uninitialized"), -1) : objfile-> section_offsets->offsets[((objfile->sect_index_text == - 1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1934, "sect_index_text not initialized"), -1) : objfile-> sect_index_text)]) |
| 1934 | SECT_OFF_TEXT (objfile))((((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1934, "sect_index_text not initialized"), -1) : objfile-> sect_index_text) == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1934, "Section index is uninitialized"), -1) : objfile-> section_offsets->offsets[((objfile->sect_index_text == - 1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 1934, "sect_index_text not initialized"), -1) : objfile-> sect_index_text)]))))) |
| 1935 | { |
| 1936 | pst->textlow = nlist.n_value; |
| 1937 | textlow_not_set = 0; |
| 1938 | } |
| 1939 | add_psymbol_to_list (namestring, p - namestring, |
| 1940 | VAR_DOMAIN, LOC_BLOCK, |
| 1941 | &objfile->global_psymbols, |
| 1942 | 0, nlist.n_value, |
| 1943 | psymtab_language, objfile); |
| 1944 | continue; |
| 1945 | |
| 1946 | /* Two things show up here (hopefully); static symbols of |
| 1947 | local scope (static used inside braces) or extensions |
| 1948 | of structure symbols. We can ignore both. */ |
| 1949 | case 'V': |
| 1950 | case '(': |
| 1951 | case '0': |
| 1952 | case '1': |
| 1953 | case '2': |
| 1954 | case '3': |
| 1955 | case '4': |
| 1956 | case '5': |
| 1957 | case '6': |
| 1958 | case '7': |
| 1959 | case '8': |
| 1960 | case '9': |
| 1961 | case '-': |
| 1962 | case '#': /* for symbol identification (used in live ranges) */ |
| 1963 | continue; |
| 1964 | |
| 1965 | case ':': |
| 1966 | /* It is a C++ nested symbol. We don't need to record it |
| 1967 | (I don't think); if we try to look up foo::bar::baz, |
| 1968 | then symbols for the symtab containing foo should get |
| 1969 | read in, I think. */ |
| 1970 | /* Someone says sun cc puts out symbols like |
| 1971 | /foo/baz/maclib::/usr/local/bin/maclib, |
| 1972 | which would get here with a symbol type of ':'. */ |
| 1973 | continue; |
| 1974 | |
| 1975 | default: |
| 1976 | /* Unexpected symbol descriptor. The second and subsequent stabs |
| 1977 | of a continued stab can show up here. The question is |
| 1978 | whether they ever can mimic a normal stab--it would be |
| 1979 | nice if not, since we certainly don't want to spend the |
| 1980 | time searching to the end of every string looking for |
| 1981 | a backslash. */ |
| 1982 | |
| 1983 | complaint (&symfile_complaints, "unknown symbol descriptor `%c'", |
| 1984 | p[1]); |
| 1985 | |
| 1986 | /* Ignore it; perhaps it is an extension that we don't |
| 1987 | know about. */ |
| 1988 | continue; |
| 1989 | } |
| 1990 | |
| 1991 | case N_EXCL: |
| 1992 | |
| 1993 | namestring = set_namestring (objfile, nlist); |
| 1994 | |
| 1995 | /* Find the corresponding bincl and mark that psymtab on the |
| 1996 | psymtab dependency list */ |
| 1997 | { |
| 1998 | struct partial_symtab *needed_pst = |
| 1999 | find_corresponding_bincl_psymtab (namestring, nlist.n_value); |
| 2000 | |
| 2001 | /* If this include file was defined earlier in this file, |
| 2002 | leave it alone. */ |
| 2003 | if (needed_pst == pst) |
| 2004 | continue; |
| 2005 | |
| 2006 | if (needed_pst) |
| 2007 | { |
| 2008 | int i; |
| 2009 | int found = 0; |
| 2010 | |
| 2011 | for (i = 0; i < dependencies_used; i++) |
| 2012 | if (dependency_list[i] == needed_pst) |
| 2013 | { |
| 2014 | found = 1; |
| 2015 | break; |
| 2016 | } |
| 2017 | |
| 2018 | /* If it's already in the list, skip the rest. */ |
| 2019 | if (found) |
| 2020 | continue; |
| 2021 | |
| 2022 | dependency_list[dependencies_used++] = needed_pst; |
| 2023 | if (dependencies_used >= dependencies_allocated) |
| 2024 | { |
| 2025 | struct partial_symtab **orig = dependency_list; |
| 2026 | dependency_list = |
| 2027 | (struct partial_symtab **) |
| 2028 | alloca ((dependencies_allocated *= 2)__builtin_alloca((dependencies_allocated *= 2) * sizeof (struct partial_symtab *)) |
| 2029 | * sizeof (struct partial_symtab *))__builtin_alloca((dependencies_allocated *= 2) * sizeof (struct partial_symtab *)); |
| 2030 | memcpy (dependency_list, orig, |
| 2031 | (dependencies_used |
| 2032 | * sizeof (struct partial_symtab *))); |
| 2033 | #ifdef DEBUG_INFO |
| 2034 | fprintf_unfiltered (gdb_stderr, "Had to reallocate dependency list.\n"); |
| 2035 | fprintf_unfiltered (gdb_stderr, "New dependencies allocated: %d\n", |
| 2036 | dependencies_allocated); |
| 2037 | #endif |
| 2038 | } |
| 2039 | } |
| 2040 | } |
| 2041 | continue; |
| 2042 | |
| 2043 | case N_ENDM: |
| 2044 | #ifdef SOFUN_ADDRESS_MAYBE_MISSING |
| 2045 | /* Solaris 2 end of module, finish current partial symbol table. |
| 2046 | end_psymtab will set pst->texthigh to the proper value, which |
| 2047 | is necessary if a module compiled without debugging info |
| 2048 | follows this module. */ |
| 2049 | if (pst) |
| 2050 | { |
| 2051 | end_psymtab (pst, psymtab_include_list, includes_used, |
| 2052 | symnum * symbol_size, |
| 2053 | (CORE_ADDR) 0, |
| 2054 | dependency_list, dependencies_used, textlow_not_set); |
| 2055 | pst = (struct partial_symtab *) 0; |
| 2056 | includes_used = 0; |
| 2057 | dependencies_used = 0; |
| 2058 | } |
| 2059 | #endif |
| 2060 | continue; |
| 2061 | |
| 2062 | case N_RBRAC: |
| 2063 | #ifdef HANDLE_RBRAC |
| 2064 | HANDLE_RBRAC (nlist.n_value); |
| 2065 | continue; |
| 2066 | #endif |
| 2067 | case N_EINCL: |
| 2068 | case N_DSLINE: |
| 2069 | case N_BSLINE: |
| 2070 | case N_SSYM: /* Claim: Structure or union element. |
| 2071 | Hopefully, I can ignore this. */ |
| 2072 | case N_ENTRY: /* Alternate entry point; can ignore. */ |
| 2073 | case N_MAIN: /* Can definitely ignore this. */ |
| 2074 | case N_CATCH: /* These are GNU C++ extensions */ |
| 2075 | case N_EHDECL: /* that can safely be ignored here. */ |
| 2076 | case N_LENG: |
| 2077 | case N_BCOMM: |
| 2078 | case N_ECOMM: |
| 2079 | case N_ECOML: |
| 2080 | case N_FNAME: |
| 2081 | case N_SLINE: |
| 2082 | case N_RSYM: |
| 2083 | case N_PSYM: |
| 2084 | case N_LBRAC: |
| 2085 | case N_NSYMS: /* Ultrix 4.0: symbol count */ |
| 2086 | case N_DEFD: /* GNU Modula-2 */ |
| 2087 | case N_ALIAS: /* SunPro F77: alias name, ignore for now. */ |
| 2088 | |
| 2089 | case N_OBJ: /* useless types from Solaris */ |
| 2090 | case N_OPT: |
| 2091 | case N_PATCH: |
| 2092 | /* These symbols aren't interesting; don't worry about them */ |
| 2093 | |
| 2094 | continue; |
| 2095 | |
| 2096 | default: |
| 2097 | /* If we haven't found it yet, ignore it. It's probably some |
| 2098 | new type we don't know about yet. */ |
| 2099 | unknown_symtype_complaint (hex_string (nlist.n_type)); |
| 2100 | continue; |
| 2101 | } |
| 2102 | } |
| 2103 | |
| 2104 | /* If there's stuff to be cleaned up, clean it up. */ |
| 2105 | if (pst) |
| 2106 | { |
| 2107 | /* Don't set pst->texthigh lower than it already is. */ |
| 2108 | CORE_ADDR text_end = |
| 2109 | (lowest_text_address == (CORE_ADDR) -1 |
| 2110 | ? (text_addr + ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile))((((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 2110, "sect_index_text not initialized"), -1) : objfile-> sect_index_text) == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 2110, "Section index is uninitialized"), -1) : objfile-> section_offsets->offsets[((objfile->sect_index_text == - 1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 2110, "sect_index_text not initialized"), -1) : objfile-> sect_index_text)])) |
| 2111 | : lowest_text_address) |
| 2112 | + text_size; |
| 2113 | |
| 2114 | end_psymtab (pst, psymtab_include_list, includes_used, |
| 2115 | symnum * symbol_size, |
| 2116 | text_end > pst->texthigh ? text_end : pst->texthigh, |
| 2117 | dependency_list, dependencies_used, textlow_not_set); |
| 2118 | } |
| 2119 | |
| 2120 | do_cleanups (back_to); |
| 2121 | } |
| 2122 | |
| 2123 | /* Allocate and partially fill a partial symtab. It will be |
| 2124 | completely filled at the end of the symbol list. |
| 2125 | |
| 2126 | SYMFILE_NAME is the name of the symbol-file we are reading from, and ADDR |
| 2127 | is the address relative to which its symbols are (incremental) or 0 |
| 2128 | (normal). */ |
| 2129 | |
| 2130 | |
| 2131 | static struct partial_symtab * |
| 2132 | start_psymtab (struct objfile *objfile, char *filename, CORE_ADDR textlow, |
| 2133 | int ldsymoff, struct partial_symbol **global_syms, |
| 2134 | struct partial_symbol **static_syms) |
| 2135 | { |
| 2136 | struct partial_symtab *result = |
| 2137 | start_psymtab_common (objfile, objfile->section_offsets, |
| 2138 | filename, textlow, global_syms, static_syms); |
| 2139 | |
| 2140 | result->read_symtab_private = (char *) |
| 2141 | obstack_alloc (&objfile->objfile_obstack, sizeof (struct symloc))__extension__ ({ struct obstack *__h = (&objfile->objfile_obstack ); __extension__ ({ struct obstack *__o = (__h); int __len = ( (sizeof (struct symloc))); 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; }); }); |
| 2142 | LDSYMOFF (result)(((struct symloc *)((result)->read_symtab_private))->ldsymoff ) = ldsymoff; |
| 2143 | result->read_symtab = dbx_psymtab_to_symtab; |
| 2144 | SYMBOL_SIZE (result)(((struct symloc *)((result)->read_symtab_private))->symbol_size ) = symbol_size; |
| 2145 | SYMBOL_OFFSET (result)(((struct symloc *)((result)->read_symtab_private))->symbol_offset ) = symbol_table_offset; |
| 2146 | STRING_OFFSET (result)(((struct symloc *)((result)->read_symtab_private))->string_offset ) = string_table_offset; |
| 2147 | FILE_STRING_OFFSET (result)(((struct symloc *)((result)->read_symtab_private))->file_string_offset ) = file_string_table_offset; |
| 2148 | |
| 2149 | /* If we're handling an ELF file, drag some section-relocation info |
| 2150 | for this source file out of the ELF symbol table, to compensate for |
| 2151 | Sun brain death. This replaces the section_offsets in this psymtab, |
| 2152 | if successful. */ |
| 2153 | elfstab_offset_sections (objfile, result); |
| 2154 | |
| 2155 | /* Deduce the source language from the filename for this psymtab. */ |
| 2156 | psymtab_language = deduce_language_from_filename (filename); |
| 2157 | |
| 2158 | return result; |
| 2159 | } |
| 2160 | |
| 2161 | /* Close off the current usage of PST. |
| 2162 | Returns PST or NULL if the partial symtab was empty and thrown away. |
| 2163 | |
| 2164 | FIXME: List variables and peculiarities of same. */ |
| 2165 | |
| 2166 | struct partial_symtab * |
| 2167 | end_psymtab (struct partial_symtab *pst, char **include_list, int num_includes, |
| 2168 | int capping_symbol_offset, CORE_ADDR capping_text, |
| 2169 | struct partial_symtab **dependency_list, int number_dependencies, |
| 2170 | int textlow_not_set) |
| 2171 | { |
| 2172 | int i; |
| 2173 | struct objfile *objfile = pst->objfile; |
| 2174 | |
| 2175 | if (capping_symbol_offset != -1) |
| 2176 | LDSYMLEN (pst)(((struct symloc *)((pst)->read_symtab_private))->ldsymlen ) = capping_symbol_offset - LDSYMOFF (pst)(((struct symloc *)((pst)->read_symtab_private))->ldsymoff ); |
| 2177 | pst->texthigh = capping_text; |
| 2178 | |
| 2179 | #ifdef SOFUN_ADDRESS_MAYBE_MISSING |
| 2180 | /* Under Solaris, the N_SO symbols always have a value of 0, |
| 2181 | instead of the usual address of the .o file. Therefore, |
| 2182 | we have to do some tricks to fill in texthigh and textlow. |
| 2183 | The first trick is: if we see a static |
| 2184 | or global function, and the textlow for the current pst |
| 2185 | is not set (ie: textlow_not_set), then we use that function's |
| 2186 | address for the textlow of the pst. */ |
| 2187 | |
| 2188 | /* Now, to fill in texthigh, we remember the last function seen |
| 2189 | in the .o file. Also, there's a hack in |
| 2190 | bfd/elf.c and gdb/elfread.c to pass the ELF st_size field |
| 2191 | to here via the misc_info field. Therefore, we can fill in |
| 2192 | a reliable texthigh by taking the address plus size of the |
| 2193 | last function in the file. */ |
| 2194 | |
| 2195 | if (pst->texthigh == 0 && last_function_name) |
| 2196 | { |
| 2197 | char *p; |
| 2198 | int n; |
| 2199 | struct minimal_symbol *minsym; |
| 2200 | |
| 2201 | p = strchr (last_function_name, ':'); |
| 2202 | if (p == NULL((void*)0)) |
| 2203 | p = last_function_name; |
| 2204 | n = p - last_function_name; |
| 2205 | p = alloca (n + 2)__builtin_alloca(n + 2); |
| 2206 | strncpy (p, last_function_name, n); |
| 2207 | p[n] = 0; |
| 2208 | |
| 2209 | minsym = lookup_minimal_symbol (p, pst->filename, objfile); |
| 2210 | if (minsym == NULL((void*)0)) |
| 2211 | { |
| 2212 | /* Sun Fortran appends an underscore to the minimal symbol name, |
| 2213 | try again with an appended underscore if the minimal symbol |
| 2214 | was not found. */ |
| 2215 | p[n] = '_'; |
| 2216 | p[n + 1] = 0; |
| 2217 | minsym = lookup_minimal_symbol (p, pst->filename, objfile); |
| 2218 | } |
| 2219 | |
| 2220 | if (minsym) |
| 2221 | pst->texthigh = SYMBOL_VALUE_ADDRESS (minsym)(minsym)->ginfo.value.address + MSYMBOL_SIZE (minsym)(minsym)->size; |
| 2222 | |
| 2223 | last_function_name = NULL((void*)0); |
| 2224 | } |
| 2225 | |
| 2226 | /* this test will be true if the last .o file is only data */ |
| 2227 | if (textlow_not_set) |
| 2228 | pst->textlow = pst->texthigh; |
| 2229 | else |
| 2230 | { |
| 2231 | struct partial_symtab *p1; |
| 2232 | |
| 2233 | /* If we know our own starting text address, then walk through all other |
| 2234 | psymtabs for this objfile, and if any didn't know their ending text |
| 2235 | address, set it to our starting address. Take care to not set our |
| 2236 | own ending address to our starting address, nor to set addresses on |
| 2237 | `dependency' files that have both textlow and texthigh zero. */ |
| 2238 | |
| 2239 | ALL_OBJFILE_PSYMTABS (objfile, p1)for ((p1) = (objfile) -> psymtabs; (p1) != ((void*)0); (p1 ) = (p1) -> next) |
| 2240 | { |
| 2241 | if (p1->texthigh == 0 && p1->textlow != 0 && p1 != pst) |
| 2242 | { |
| 2243 | p1->texthigh = pst->textlow; |
| 2244 | /* if this file has only data, then make textlow match texthigh */ |
| 2245 | if (p1->textlow == 0) |
| 2246 | p1->textlow = p1->texthigh; |
| 2247 | } |
| 2248 | } |
| 2249 | } |
| 2250 | |
| 2251 | /* End of kludge for patching Solaris textlow and texthigh. */ |
| 2252 | #endif /* SOFUN_ADDRESS_MAYBE_MISSING. */ |
| 2253 | |
| 2254 | pst->n_global_syms = |
| 2255 | objfile->global_psymbols.next - (objfile->global_psymbols.list + pst->globals_offset); |
| 2256 | pst->n_static_syms = |
| 2257 | objfile->static_psymbols.next - (objfile->static_psymbols.list + pst->statics_offset); |
| 2258 | |
| 2259 | pst->number_of_dependencies = number_dependencies; |
| 2260 | if (number_dependencies) |
| 2261 | { |
| 2262 | pst->dependencies = (struct partial_symtab **) |
| 2263 | obstack_alloc (&objfile->objfile_obstack,__extension__ ({ struct obstack *__h = (&objfile->objfile_obstack ); __extension__ ({ struct obstack *__o = (__h); int __len = ( (number_dependencies * sizeof (struct partial_symtab *))); 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; }); }) |
| 2264 | number_dependencies * sizeof (struct partial_symtab *))__extension__ ({ struct obstack *__h = (&objfile->objfile_obstack ); __extension__ ({ struct obstack *__o = (__h); int __len = ( (number_dependencies * sizeof (struct partial_symtab *))); 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; }); }); |
| 2265 | memcpy (pst->dependencies, dependency_list, |
| 2266 | number_dependencies * sizeof (struct partial_symtab *)); |
| 2267 | } |
| 2268 | else |
| 2269 | pst->dependencies = 0; |
| 2270 | |
| 2271 | for (i = 0; i < num_includes; i++) |
| 2272 | { |
| 2273 | struct partial_symtab *subpst = |
| 2274 | allocate_psymtab (include_list[i], objfile); |
| 2275 | |
| 2276 | /* Copy the sesction_offsets array from the main psymtab. */ |
| 2277 | subpst->section_offsets = pst->section_offsets; |
| 2278 | subpst->read_symtab_private = |
| 2279 | (char *) obstack_alloc (&objfile->objfile_obstack,__extension__ ({ struct obstack *__h = (&objfile->objfile_obstack ); __extension__ ({ struct obstack *__o = (__h); int __len = ( (sizeof (struct symloc))); 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; }); }) |
| 2280 | sizeof (struct symloc))__extension__ ({ struct obstack *__h = (&objfile->objfile_obstack ); __extension__ ({ struct obstack *__o = (__h); int __len = ( (sizeof (struct symloc))); 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; }); }); |
| 2281 | LDSYMOFF (subpst)(((struct symloc *)((subpst)->read_symtab_private))->ldsymoff ) = |
| 2282 | LDSYMLEN (subpst)(((struct symloc *)((subpst)->read_symtab_private))->ldsymlen ) = |
| 2283 | subpst->textlow = |
| 2284 | subpst->texthigh = 0; |
| 2285 | |
| 2286 | /* We could save slight bits of space by only making one of these, |
| 2287 | shared by the entire set of include files. FIXME-someday. */ |
| 2288 | subpst->dependencies = (struct partial_symtab **) |
| 2289 | obstack_alloc (&objfile->objfile_obstack,__extension__ ({ struct obstack *__h = (&objfile->objfile_obstack ); __extension__ ({ struct obstack *__o = (__h); int __len = ( (sizeof (struct partial_symtab *))); 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; }); }) |
| 2290 | sizeof (struct partial_symtab *))__extension__ ({ struct obstack *__h = (&objfile->objfile_obstack ); __extension__ ({ struct obstack *__o = (__h); int __len = ( (sizeof (struct partial_symtab *))); 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; }); }); |
| 2291 | subpst->dependencies[0] = pst; |
| 2292 | subpst->number_of_dependencies = 1; |
| 2293 | |
| 2294 | subpst->globals_offset = |
| 2295 | subpst->n_global_syms = |
| 2296 | subpst->statics_offset = |
| 2297 | subpst->n_static_syms = 0; |
| 2298 | |
| 2299 | subpst->readin = 0; |
| 2300 | subpst->symtab = 0; |
| 2301 | subpst->read_symtab = pst->read_symtab; |
| 2302 | } |
| 2303 | |
| 2304 | sort_pst_symbols (pst); |
| 2305 | |
| 2306 | /* If there is already a psymtab or symtab for a file of this name, remove it. |
| 2307 | (If there is a symtab, more drastic things also happen.) |
| 2308 | This happens in VxWorks. */ |
| 2309 | free_named_symtabs (pst->filename); |
| 2310 | |
| 2311 | if (num_includes == 0 |
| 2312 | && number_dependencies == 0 |
| 2313 | && pst->n_global_syms == 0 |
| 2314 | && pst->n_static_syms == 0 |
| 2315 | && has_line_numbers == 0) |
| 2316 | { |
| 2317 | /* Throw away this psymtab, it's empty. We can't deallocate it, since |
| 2318 | it is on the obstack, but we can forget to chain it on the list. */ |
| 2319 | /* Empty psymtabs happen as a result of header files which don't have |
| 2320 | any symbols in them. There can be a lot of them. But this check |
| 2321 | is wrong, in that a psymtab with N_SLINE entries but nothing else |
| 2322 | is not empty, but we don't realize that. Fixing that without slowing |
| 2323 | things down might be tricky. */ |
| 2324 | |
| 2325 | discard_psymtab (pst); |
| 2326 | |
| 2327 | /* Indicate that psymtab was thrown away. */ |
| 2328 | pst = (struct partial_symtab *) NULL((void*)0); |
| 2329 | } |
| 2330 | return pst; |
| 2331 | } |
| 2332 | |
| 2333 | static void |
| 2334 | dbx_psymtab_to_symtab_1 (struct partial_symtab *pst) |
| 2335 | { |
| 2336 | struct cleanup *old_chain; |
| 2337 | int i; |
| 2338 | |
| 2339 | if (!pst) |
| 2340 | return; |
| 2341 | |
| 2342 | if (pst->readin) |
| 2343 | { |
| 2344 | fprintf_unfiltered (gdb_stderr, "Psymtab for %s already read in. Shouldn't happen.\n", |
| 2345 | pst->filename); |
| 2346 | return; |
| 2347 | } |
| 2348 | |
| 2349 | /* Read in all partial symtabs on which this one is dependent */ |
| 2350 | for (i = 0; i < pst->number_of_dependencies; i++) |
| 2351 | if (!pst->dependencies[i]->readin) |
| 2352 | { |
| 2353 | /* Inform about additional files that need to be read in. */ |
| 2354 | if (info_verbose) |
| 2355 | { |
| 2356 | fputs_filtered (" ", gdb_stdout); |
| 2357 | wrap_here (""); |
| 2358 | fputs_filtered ("and ", gdb_stdout); |
| 2359 | wrap_here (""); |
| 2360 | printf_filtered ("%s...", pst->dependencies[i]->filename); |
| 2361 | wrap_here (""); /* Flush output */ |
| 2362 | gdb_flush (gdb_stdout); |
| 2363 | } |
| 2364 | dbx_psymtab_to_symtab_1 (pst->dependencies[i]); |
| 2365 | } |
| 2366 | |
| 2367 | if (LDSYMLEN (pst)(((struct symloc *)((pst)->read_symtab_private))->ldsymlen )) /* Otherwise it's a dummy */ |
| 2368 | { |
| 2369 | /* Init stuff necessary for reading in symbols */ |
| 2370 | stabsread_init (); |
| 2371 | buildsym_init (); |
| 2372 | old_chain = make_cleanup (really_free_pendings, 0); |
| 2373 | file_string_table_offset = FILE_STRING_OFFSET (pst)(((struct symloc *)((pst)->read_symtab_private))->file_string_offset ); |
| 2374 | symbol_size = SYMBOL_SIZE (pst)(((struct symloc *)((pst)->read_symtab_private))->symbol_size ); |
| 2375 | |
| 2376 | /* Read in this file's symbols */ |
| 2377 | bfd_seek (pst->objfile->obfd, SYMBOL_OFFSET (pst)(((struct symloc *)((pst)->read_symtab_private))->symbol_offset ), SEEK_SET0); |
| 2378 | read_ofile_symtab (pst); |
| 2379 | |
| 2380 | do_cleanups (old_chain); |
| 2381 | } |
| 2382 | |
| 2383 | pst->readin = 1; |
| 2384 | } |
| 2385 | |
| 2386 | /* Read in all of the symbols for a given psymtab for real. |
| 2387 | Be verbose about it if the user wants that. */ |
| 2388 | |
| 2389 | static void |
| 2390 | dbx_psymtab_to_symtab (struct partial_symtab *pst) |
| 2391 | { |
| 2392 | bfd *sym_bfd; |
| 2393 | struct cleanup *back_to = NULL((void*)0); |
| 2394 | |
| 2395 | if (!pst) |
| 2396 | return; |
| 2397 | |
| 2398 | if (pst->readin) |
| 2399 | { |
| 2400 | fprintf_unfiltered (gdb_stderr, "Psymtab for %s already read in. Shouldn't happen.\n", |
| 2401 | pst->filename); |
| 2402 | return; |
| 2403 | } |
| 2404 | |
| 2405 | if (LDSYMLEN (pst)(((struct symloc *)((pst)->read_symtab_private))->ldsymlen ) || pst->number_of_dependencies) |
| 2406 | { |
| 2407 | /* Print the message now, before reading the string table, |
| 2408 | to avoid disconcerting pauses. */ |
| 2409 | if (info_verbose) |
| 2410 | { |
| 2411 | printf_filtered ("Reading in symbols for %s...", pst->filename); |
| 2412 | gdb_flush (gdb_stdout); |
| 2413 | } |
| 2414 | |
| 2415 | sym_bfd = pst->objfile->obfd; |
| 2416 | |
| 2417 | next_symbol_text_func = dbx_next_symbol_text; |
| 2418 | |
| 2419 | if (DBX_STAB_SECTION (pst->objfile)(((pst->objfile)->sym_stab_info)->stab_section)) |
| 2420 | { |
| 2421 | stabs_data |
| 2422 | = symfile_relocate_debug_section (pst->objfile->obfd, |
| 2423 | DBX_STAB_SECTION (pst->objfile)(((pst->objfile)->sym_stab_info)->stab_section), |
| 2424 | NULL((void*)0)); |
| 2425 | if (stabs_data) |
| 2426 | back_to = make_cleanup (free_current_contents, (void *) &stabs_data); |
| 2427 | } |
| 2428 | |
| 2429 | dbx_psymtab_to_symtab_1 (pst); |
| 2430 | |
| 2431 | if (back_to) |
| 2432 | do_cleanups (back_to); |
| 2433 | |
| 2434 | /* Match with global symbols. This only needs to be done once, |
| 2435 | after all of the symtabs and dependencies have been read in. */ |
| 2436 | scan_file_globals (pst->objfile); |
| 2437 | |
| 2438 | /* Finish up the debug error message. */ |
| 2439 | if (info_verbose) |
| 2440 | printf_filtered ("done.\n"); |
| 2441 | } |
| 2442 | } |
| 2443 | |
| 2444 | /* Read in a defined section of a specific object file's symbols. */ |
| 2445 | |
| 2446 | static void |
| 2447 | read_ofile_symtab (struct partial_symtab *pst) |
| 2448 | { |
| 2449 | char *namestring; |
| 2450 | struct external_nlist *bufp; |
| 2451 | struct internal_nlist nlist; |
| 2452 | unsigned char type; |
| 2453 | unsigned max_symnum; |
| 2454 | bfd *abfd; |
| 2455 | struct objfile *objfile; |
| 2456 | int sym_offset; /* Offset to start of symbols to read */ |
| 2457 | int sym_size; /* Size of symbols to read */ |
| 2458 | CORE_ADDR text_offset; /* Start of text segment for symbols */ |
| 2459 | int text_size; /* Size of text segment for symbols */ |
| 2460 | struct section_offsets *section_offsets; |
| 2461 | |
| 2462 | objfile = pst->objfile; |
| 2463 | sym_offset = LDSYMOFF (pst)(((struct symloc *)((pst)->read_symtab_private))->ldsymoff ); |
| 2464 | sym_size = LDSYMLEN (pst)(((struct symloc *)((pst)->read_symtab_private))->ldsymlen ); |
| 2465 | text_offset = pst->textlow; |
| 2466 | text_size = pst->texthigh - pst->textlow; |
| 2467 | /* This cannot be simply objfile->section_offsets because of |
| 2468 | elfstab_offset_sections() which initializes the psymtab section |
| 2469 | offsets information in a special way, and that is different from |
| 2470 | objfile->section_offsets. */ |
| 2471 | section_offsets = pst->section_offsets; |
| 2472 | |
| 2473 | current_objfile = objfile; |
| 2474 | subfile_stack = NULL((void*)0); |
| 2475 | |
| 2476 | stringtab_global = DBX_STRINGTAB (objfile)(((objfile)->sym_stab_info)->stringtab); |
| 2477 | last_source_file = NULL((void*)0); |
| 2478 | |
| 2479 | abfd = objfile->obfd; |
| 2480 | symfile_bfd = objfile->obfd; /* Implicit param to next_text_symbol */ |
| 2481 | symbuf_end = symbuf_idx = 0; |
| 2482 | symbuf_read = 0; |
| 2483 | symbuf_left = sym_offset + sym_size; |
| 2484 | |
| 2485 | /* It is necessary to actually read one symbol *before* the start |
| 2486 | of this symtab's symbols, because the GCC_COMPILED_FLAG_SYMBOL |
| 2487 | occurs before the N_SO symbol. |
| 2488 | |
| 2489 | Detecting this in read_dbx_symtab |
| 2490 | would slow down initial readin, so we look for it here instead. */ |
| 2491 | if (!processing_acc_compilation && sym_offset >= (int) symbol_size) |
| 2492 | { |
| 2493 | stabs_seek (sym_offset - symbol_size); |
| 2494 | fill_symbuf (abfd); |
| 2495 | bufp = &symbuf[symbuf_idx++]; |
| 2496 | INTERNALIZE_SYMBOL (nlist, bufp, abfd){ (nlist).n_type = (*(unsigned char *) ((bufp)->e_type) & 0xff); (nlist).n_strx = ((*((abfd)->xvec->bfd_h_getx32 )) ((bufp)->e_strx)); (nlist).n_desc = ((*((abfd)->xvec ->bfd_h_getx16)) ((bufp)->e_desc)); if (bfd_get_sign_extend_vma (abfd)) (nlist).n_value = ((*((abfd)->xvec->bfd_h_getx_signed_32 )) ((bufp)->e_value)); else (nlist).n_value = ((*((abfd)-> xvec->bfd_h_getx32)) ((bufp)->e_value)); }; |
| 2497 | OBJSTAT (objfile, n_stabs++)(objfile -> stats.n_stabs++); |
| 2498 | |
| 2499 | namestring = set_namestring (objfile, nlist); |
| 2500 | |
| 2501 | processing_gcc_compilation = 0; |
| 2502 | if (nlist.n_type == N_TEXT4) |
| 2503 | { |
| 2504 | const char *tempstring = namestring; |
| 2505 | |
| 2506 | if (DEPRECATED_STREQ (namestring, GCC_COMPILED_FLAG_SYMBOL)(strcmp ((namestring), ("gcc_compiled.")) == 0)) |
| 2507 | processing_gcc_compilation = 1; |
| 2508 | else if (DEPRECATED_STREQ (namestring, GCC2_COMPILED_FLAG_SYMBOL)(strcmp ((namestring), ("gcc2_compiled.")) == 0)) |
| 2509 | processing_gcc_compilation = 2; |
| 2510 | if (tempstring[0] == bfd_get_symbol_leading_char (symfile_bfd)((symfile_bfd)->xvec->symbol_leading_char)) |
| 2511 | ++tempstring; |
| 2512 | if (DEPRECATED_STREQN (tempstring, "__gnu_compiled", 14)(strncmp ((tempstring), ("__gnu_compiled"), (14)) == 0)) |
| 2513 | processing_gcc_compilation = 2; |
| 2514 | } |
| 2515 | |
| 2516 | /* Try to select a C++ demangling based on the compilation unit |
| 2517 | producer. */ |
| 2518 | |
| 2519 | #if 0 |
| 2520 | /* For now, stay with AUTO_DEMANGLING for g++ output, as we don't |
| 2521 | know whether it will use the old style or v3 mangling. */ |
| 2522 | if (processing_gcc_compilation) |
| 2523 | { |
| 2524 | if (AUTO_DEMANGLING(((int) current_demangling_style) & (1 << 8))) |
| 2525 | { |
| 2526 | set_demangling_style (GNU_DEMANGLING_STYLE_STRING"gnu"); |
| 2527 | } |
| 2528 | } |
| 2529 | #endif |
| 2530 | } |
| 2531 | else |
| 2532 | { |
| 2533 | /* The N_SO starting this symtab is the first symbol, so we |
| 2534 | better not check the symbol before it. I'm not this can |
| 2535 | happen, but it doesn't hurt to check for it. */ |
| 2536 | stabs_seek (sym_offset); |
| 2537 | processing_gcc_compilation = 0; |
| 2538 | } |
| 2539 | |
| 2540 | if (symbuf_idx == symbuf_end) |
| 2541 | fill_symbuf (abfd); |
| 2542 | bufp = &symbuf[symbuf_idx]; |
| 2543 | if (bfd_h_get_8 (abfd, bufp->e_type)(*(unsigned char *) (bufp->e_type) & 0xff) != N_SO) |
| 2544 | error ("First symbol in segment of executable not a source symbol"); |
| 2545 | |
| 2546 | max_symnum = sym_size / symbol_size; |
| 2547 | |
| 2548 | for (symnum = 0; |
| 2549 | symnum < max_symnum; |
| 2550 | symnum++) |
| 2551 | { |
| 2552 | QUIT{ if (quit_flag) quit (); if (deprecated_interactive_hook) deprecated_interactive_hook (); }; /* Allow this to be interruptable */ |
| 2553 | if (symbuf_idx == symbuf_end) |
| 2554 | fill_symbuf (abfd); |
| 2555 | bufp = &symbuf[symbuf_idx++]; |
| 2556 | INTERNALIZE_SYMBOL (nlist, bufp, abfd){ (nlist).n_type = (*(unsigned char *) ((bufp)->e_type) & 0xff); (nlist).n_strx = ((*((abfd)->xvec->bfd_h_getx32 )) ((bufp)->e_strx)); (nlist).n_desc = ((*((abfd)->xvec ->bfd_h_getx16)) ((bufp)->e_desc)); if (bfd_get_sign_extend_vma (abfd)) (nlist).n_value = ((*((abfd)->xvec->bfd_h_getx_signed_32 )) ((bufp)->e_value)); else (nlist).n_value = ((*((abfd)-> xvec->bfd_h_getx32)) ((bufp)->e_value)); }; |
| 2557 | OBJSTAT (objfile, n_stabs++)(objfile -> stats.n_stabs++); |
| 2558 | |
| 2559 | type = bfd_h_get_8 (abfd, bufp->e_type)(*(unsigned char *) (bufp->e_type) & 0xff); |
| 2560 | |
| 2561 | namestring = set_namestring (objfile, nlist); |
| 2562 | |
| 2563 | if (type & N_STAB0xe0) |
| 2564 | { |
| 2565 | process_one_symbol (type, nlist.n_desc, nlist.n_value, |
| 2566 | namestring, section_offsets, objfile); |
| 2567 | } |
| 2568 | /* We skip checking for a new .o or -l file; that should never |
| 2569 | happen in this routine. */ |
| 2570 | else if (type == N_TEXT4) |
| 2571 | { |
| 2572 | /* I don't think this code will ever be executed, because |
| 2573 | the GCC_COMPILED_FLAG_SYMBOL usually is right before |
| 2574 | the N_SO symbol which starts this source file. |
| 2575 | However, there is no reason not to accept |
| 2576 | the GCC_COMPILED_FLAG_SYMBOL anywhere. */ |
| 2577 | |
| 2578 | if (DEPRECATED_STREQ (namestring, GCC_COMPILED_FLAG_SYMBOL)(strcmp ((namestring), ("gcc_compiled.")) == 0)) |
| 2579 | processing_gcc_compilation = 1; |
| 2580 | else if (DEPRECATED_STREQ (namestring, GCC2_COMPILED_FLAG_SYMBOL)(strcmp ((namestring), ("gcc2_compiled.")) == 0)) |
| 2581 | processing_gcc_compilation = 2; |
| 2582 | |
| 2583 | #if 0 |
| 2584 | /* For now, stay with AUTO_DEMANGLING for g++ output, as we don't |
| 2585 | know whether it will use the old style or v3 mangling. */ |
| 2586 | if (AUTO_DEMANGLING(((int) current_demangling_style) & (1 << 8))) |
| 2587 | { |
| 2588 | set_demangling_style (GNU_DEMANGLING_STYLE_STRING"gnu"); |
| 2589 | } |
| 2590 | #endif |
| 2591 | } |
| 2592 | else if (type & N_EXT1 || type == (unsigned char) N_TEXT4 |
| 2593 | || type == (unsigned char) N_NBTEXT |
| 2594 | ) |
| 2595 | { |
| 2596 | /* Global symbol: see if we came across a dbx defintion for |
| 2597 | a corresponding symbol. If so, store the value. Remove |
| 2598 | syms from the chain when their values are stored, but |
| 2599 | search the whole chain, as there may be several syms from |
| 2600 | different files with the same name. */ |
| 2601 | /* This is probably not true. Since the files will be read |
| 2602 | in one at a time, each reference to a global symbol will |
| 2603 | be satisfied in each file as it appears. So we skip this |
| 2604 | section. */ |
| 2605 | ; |
| 2606 | } |
| 2607 | } |
| 2608 | |
| 2609 | current_objfile = NULL((void*)0); |
| 2610 | |
| 2611 | /* In a Solaris elf file, this variable, which comes from the |
| 2612 | value of the N_SO symbol, will still be 0. Luckily, text_offset, |
| 2613 | which comes from pst->textlow is correct. */ |
| 2614 | if (last_source_start_addr == 0) |
| 2615 | last_source_start_addr = text_offset; |
| 2616 | |
| 2617 | /* In reordered executables last_source_start_addr may not be the |
| 2618 | lower bound for this symtab, instead use text_offset which comes |
| 2619 | from pst->textlow which is correct. */ |
| 2620 | if (last_source_start_addr > text_offset) |
| 2621 | last_source_start_addr = text_offset; |
| 2622 | |
| 2623 | pst->symtab = end_symtab (text_offset + text_size, objfile, SECT_OFF_TEXT (objfile)((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 2623, "sect_index_text not initialized"), -1) : objfile-> sect_index_text)); |
| 2624 | |
| 2625 | end_stabs (); |
| 2626 | } |
| 2627 | |
| 2628 | |
| 2629 | /* This handles a single symbol from the symbol-file, building symbols |
| 2630 | into a GDB symtab. It takes these arguments and an implicit argument. |
| 2631 | |
| 2632 | TYPE is the type field of the ".stab" symbol entry. |
| 2633 | DESC is the desc field of the ".stab" entry. |
| 2634 | VALU is the value field of the ".stab" entry. |
| 2635 | NAME is the symbol name, in our address space. |
| 2636 | SECTION_OFFSETS is a set of amounts by which the sections of this object |
| 2637 | file were relocated when it was loaded into memory. |
| 2638 | Note that these section_offsets are not the |
| 2639 | objfile->section_offsets but the pst->section_offsets. |
| 2640 | All symbols that refer |
| 2641 | to memory locations need to be offset by these amounts. |
| 2642 | OBJFILE is the object file from which we are reading symbols. |
| 2643 | It is used in end_symtab. */ |
| 2644 | |
| 2645 | void |
| 2646 | process_one_symbol (int type, int desc, CORE_ADDR valu, char *name, |
| 2647 | struct section_offsets *section_offsets, |
| 2648 | struct objfile *objfile) |
| 2649 | { |
| 2650 | struct context_stack *new; |
| 2651 | /* This remembers the address of the start of a function. It is used |
| 2652 | because in Solaris 2, N_LBRAC, N_RBRAC, and N_SLINE entries are |
| 2653 | relative to the current function's start address. On systems |
| 2654 | other than Solaris 2, this just holds the SECT_OFF_TEXT value, and is |
| 2655 | used to relocate these symbol types rather than SECTION_OFFSETS. */ |
| 2656 | static CORE_ADDR function_start_offset; |
| 2657 | |
| 2658 | /* This holds the address of the start of a function, without the system |
| 2659 | peculiarities of function_start_offset. */ |
| 2660 | static CORE_ADDR last_function_start; |
| 2661 | |
| 2662 | /* If this is nonzero, we've seen an N_SLINE since the start of the |
| 2663 | current function. We use this to tell us to move the first sline |
| 2664 | to the beginning of the function regardless of what its given |
| 2665 | value is. */ |
| 2666 | static int sline_found_in_function = 1; |
| 2667 | |
| 2668 | /* If this is nonzero, we've seen a non-gcc N_OPT symbol for this source |
| 2669 | file. Used to detect the SunPRO solaris compiler. */ |
| 2670 | static int n_opt_found; |
| 2671 | |
| 2672 | /* The stab type used for the definition of the last function. |
| 2673 | N_STSYM or N_GSYM for SunOS4 acc; N_FUN for other compilers. */ |
| 2674 | static int function_stab_type = 0; |
| 2675 | |
| 2676 | if (!block_address_function_relative) |
| 2677 | /* N_LBRAC, N_RBRAC and N_SLINE entries are not relative to the |
| 2678 | function start address, so just use the text offset. */ |
| 2679 | function_start_offset = ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile))((((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 2679, "sect_index_text not initialized"), -1) : objfile-> sect_index_text) == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 2679, "Section index is uninitialized"), -1) : section_offsets ->offsets[((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c", 2679, "sect_index_text not initialized" ), -1) : objfile->sect_index_text)]); |
| 2680 | |
| 2681 | /* Something is wrong if we see real data before |
| 2682 | seeing a source file name. */ |
| 2683 | |
| 2684 | if (last_source_file == NULL((void*)0) && type != (unsigned char) N_SO) |
| 2685 | { |
| 2686 | /* Ignore any symbols which appear before an N_SO symbol. |
| 2687 | Currently no one puts symbols there, but we should deal |
| 2688 | gracefully with the case. A complain()t might be in order, |
| 2689 | but this should not be an error (). */ |
| 2690 | return; |
| 2691 | } |
| 2692 | |
| 2693 | switch (type) |
| 2694 | { |
| 2695 | case N_FUN: |
| 2696 | case N_FNAME: |
| 2697 | |
| 2698 | if (*name == '\000') |
| 2699 | { |
| 2700 | /* This N_FUN marks the end of a function. This closes off the |
| 2701 | current block. */ |
| 2702 | |
| 2703 | if (context_stack_depth <= 0) |
| 2704 | { |
| 2705 | lbrac_mismatch_complaint (symnum); |
| 2706 | break; |
| 2707 | } |
| 2708 | |
| 2709 | /* The following check is added before recording line 0 at |
| 2710 | end of function so as to handle hand-generated stabs |
| 2711 | which may have an N_FUN stabs at the end of the function, but |
| 2712 | no N_SLINE stabs. */ |
| 2713 | if (sline_found_in_function) |
| 2714 | record_line (current_subfile, 0, last_function_start + valu); |
| 2715 | |
| 2716 | within_function = 0; |
| 2717 | new = pop_context (); |
| 2718 | |
| 2719 | /* Make a block for the local symbols within. */ |
| 2720 | finish_block (new->name, &local_symbols, new->old_blocks, |
| 2721 | new->start_addr, new->start_addr + valu, |
| 2722 | objfile); |
| 2723 | |
| 2724 | /* May be switching to an assembler file which may not be using |
| 2725 | block relative stabs, so reset the offset. */ |
| 2726 | if (block_address_function_relative) |
| 2727 | function_start_offset = 0; |
| 2728 | |
| 2729 | break; |
| 2730 | } |
| 2731 | |
| 2732 | sline_found_in_function = 0; |
| 2733 | |
| 2734 | /* Relocate for dynamic loading */ |
| 2735 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile))((((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 2735, "sect_index_text not initialized"), -1) : objfile-> sect_index_text) == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 2735, "Section index is uninitialized"), -1) : section_offsets ->offsets[((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c", 2735, "sect_index_text not initialized" ), -1) : objfile->sect_index_text)]); |
| 2736 | valu = SMASH_TEXT_ADDRESS (valu)(gdbarch_smash_text_address (current_gdbarch, valu)); |
| 2737 | last_function_start = valu; |
| 2738 | |
| 2739 | goto define_a_symbol; |
| 2740 | |
| 2741 | case N_LBRAC: |
| 2742 | /* This "symbol" just indicates the start of an inner lexical |
| 2743 | context within a function. */ |
| 2744 | |
| 2745 | /* Ignore extra outermost context from SunPRO cc and acc. */ |
| 2746 | if (n_opt_found && desc == 1) |
| 2747 | break; |
| 2748 | |
| 2749 | if (block_address_function_relative) |
| 2750 | /* Relocate for Sun ELF acc fn-relative syms. */ |
| 2751 | valu += function_start_offset; |
| 2752 | else |
| 2753 | /* On most machines, the block addresses are relative to the |
| 2754 | N_SO, the linker did not relocate them (sigh). */ |
| 2755 | valu += last_source_start_addr; |
| 2756 | |
| 2757 | new = push_context (desc, valu); |
| 2758 | break; |
| 2759 | |
| 2760 | case N_RBRAC: |
| 2761 | /* This "symbol" just indicates the end of an inner lexical |
| 2762 | context that was started with N_LBRAC. */ |
| 2763 | |
| 2764 | /* Ignore extra outermost context from SunPRO cc and acc. */ |
| 2765 | if (n_opt_found && desc == 1) |
| 2766 | break; |
| 2767 | |
| 2768 | if (block_address_function_relative) |
| 2769 | /* Relocate for Sun ELF acc fn-relative syms. */ |
| 2770 | valu += function_start_offset; |
| 2771 | else |
| 2772 | /* On most machines, the block addresses are relative to the |
| 2773 | N_SO, the linker did not relocate them (sigh). */ |
| 2774 | valu += last_source_start_addr; |
| 2775 | |
| 2776 | if (context_stack_depth <= 0) |
| 2777 | { |
| 2778 | lbrac_mismatch_complaint (symnum); |
| 2779 | break; |
| 2780 | } |
| 2781 | |
| 2782 | new = pop_context (); |
| 2783 | if (desc != new->depth) |
| 2784 | lbrac_mismatch_complaint (symnum); |
| 2785 | |
| 2786 | /* Some compilers put the variable decls inside of an |
| 2787 | LBRAC/RBRAC block. This macro should be nonzero if this |
| 2788 | is true. DESC is N_DESC from the N_RBRAC symbol. |
| 2789 | GCC_P is true if we've detected the GCC_COMPILED_SYMBOL |
| 2790 | or the GCC2_COMPILED_SYMBOL. */ |
| 2791 | #if !defined (VARIABLES_INSIDE_BLOCK) |
| 2792 | #define VARIABLES_INSIDE_BLOCK(desc, gcc_p)0 0 |
| 2793 | #endif |
| 2794 | |
| 2795 | /* Can only use new->locals as local symbols here if we're in |
| 2796 | gcc or on a machine that puts them before the lbrack. */ |
| 2797 | if (!VARIABLES_INSIDE_BLOCK (desc, processing_gcc_compilation)0) |
| 2798 | { |
| 2799 | if (local_symbols != NULL((void*)0)) |
| 2800 | { |
| 2801 | /* GCC development snapshots from March to December of |
| 2802 | 2000 would output N_LSYM entries after N_LBRAC |
| 2803 | entries. As a consequence, these symbols are simply |
| 2804 | discarded. Complain if this is the case. Note that |
| 2805 | there are some compilers which legitimately put local |
| 2806 | symbols within an LBRAC/RBRAC block; this complaint |
| 2807 | might also help sort out problems in which |
| 2808 | VARIABLES_INSIDE_BLOCK is incorrectly defined. */ |
| 2809 | complaint (&symfile_complaints, |
| 2810 | "misplaced N_LBRAC entry; discarding local symbols which have no enclosing block"); |
| 2811 | } |
| 2812 | local_symbols = new->locals; |
| 2813 | } |
| 2814 | |
| 2815 | if (context_stack_depth |
| 2816 | > !VARIABLES_INSIDE_BLOCK (desc, processing_gcc_compilation)0) |
| 2817 | { |
| 2818 | /* This is not the outermost LBRAC...RBRAC pair in the function, |
| 2819 | its local symbols preceded it, and are the ones just recovered |
| 2820 | from the context stack. Define the block for them (but don't |
| 2821 | bother if the block contains no symbols. Should we complain |
| 2822 | on blocks without symbols? I can't think of any useful purpose |
| 2823 | for them). */ |
| 2824 | if (local_symbols != NULL((void*)0)) |
| 2825 | { |
| 2826 | /* Muzzle a compiler bug that makes end < start. (which |
| 2827 | compilers? Is this ever harmful?). */ |
| 2828 | if (new->start_addr > valu) |
| 2829 | { |
| 2830 | complaint (&symfile_complaints, |
| 2831 | "block start larger than block end"); |
| 2832 | new->start_addr = valu; |
| 2833 | } |
| 2834 | /* Make a block for the local symbols within. */ |
| 2835 | finish_block (0, &local_symbols, new->old_blocks, |
| 2836 | new->start_addr, valu, objfile); |
| 2837 | } |
| 2838 | } |
| 2839 | else |
| 2840 | { |
| 2841 | /* This is the outermost LBRAC...RBRAC pair. There is no |
| 2842 | need to do anything; leave the symbols that preceded it |
| 2843 | to be attached to the function's own block. We need to |
| 2844 | indicate that we just moved outside of the function. */ |
| 2845 | within_function = 0; |
| 2846 | } |
| 2847 | |
| 2848 | if (VARIABLES_INSIDE_BLOCK (desc, processing_gcc_compilation)0) |
| 2849 | /* Now pop locals of block just finished. */ |
| 2850 | local_symbols = new->locals; |
| 2851 | break; |
| 2852 | |
| 2853 | case N_FN0x1f: |
| 2854 | case N_FN_SEQ0x0C: |
| 2855 | /* This kind of symbol indicates the start of an object file. */ |
| 2856 | /* Relocate for dynamic loading */ |
| 2857 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile))((((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 2857, "sect_index_text not initialized"), -1) : objfile-> sect_index_text) == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 2857, "Section index is uninitialized"), -1) : section_offsets ->offsets[((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c", 2857, "sect_index_text not initialized" ), -1) : objfile->sect_index_text)]); |
| 2858 | break; |
| 2859 | |
| 2860 | case N_SO: |
| 2861 | /* This type of symbol indicates the start of data |
| 2862 | for one source file. |
| 2863 | Finish the symbol table of the previous source file |
| 2864 | (if any) and start accumulating a new symbol table. */ |
| 2865 | /* Relocate for dynamic loading */ |
| 2866 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile))((((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 2866, "sect_index_text not initialized"), -1) : objfile-> sect_index_text) == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 2866, "Section index is uninitialized"), -1) : section_offsets ->offsets[((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c", 2866, "sect_index_text not initialized" ), -1) : objfile->sect_index_text)]); |
| 2867 | |
| 2868 | n_opt_found = 0; |
| 2869 | |
| 2870 | if (last_source_file) |
| 2871 | { |
| 2872 | /* Check if previous symbol was also an N_SO (with some |
| 2873 | sanity checks). If so, that one was actually the directory |
| 2874 | name, and the current one is the real file name. |
| 2875 | Patch things up. */ |
| 2876 | if (previous_stab_code == (unsigned char) N_SO) |
| 2877 | { |
| 2878 | patch_subfile_names (current_subfile, name); |
| 2879 | break; /* Ignore repeated SOs */ |
| 2880 | } |
| 2881 | end_symtab (valu, objfile, SECT_OFF_TEXT (objfile)((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 2881, "sect_index_text not initialized"), -1) : objfile-> sect_index_text)); |
| 2882 | end_stabs (); |
| 2883 | } |
| 2884 | |
| 2885 | /* Null name means this just marks the end of text for this .o file. |
| 2886 | Don't start a new symtab in this case. */ |
| 2887 | if (*name == '\000') |
| 2888 | break; |
| 2889 | |
| 2890 | if (block_address_function_relative) |
| 2891 | function_start_offset = 0; |
| 2892 | |
| 2893 | start_stabs (); |
| 2894 | start_symtab (name, NULL((void*)0), valu); |
| 2895 | record_debugformat ("stabs"); |
| 2896 | break; |
| 2897 | |
| 2898 | case N_SOL: |
| 2899 | /* This type of symbol indicates the start of data for |
| 2900 | a sub-source-file, one whose contents were copied or |
| 2901 | included in the compilation of the main source file |
| 2902 | (whose name was given in the N_SO symbol.) */ |
| 2903 | /* Relocate for dynamic loading */ |
| 2904 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile))((((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 2904, "sect_index_text not initialized"), -1) : objfile-> sect_index_text) == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 2904, "Section index is uninitialized"), -1) : section_offsets ->offsets[((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c", 2904, "sect_index_text not initialized" ), -1) : objfile->sect_index_text)]); |
| 2905 | start_subfile (name, current_subfile->dirname); |
| 2906 | break; |
| 2907 | |
| 2908 | case N_BINCL: |
| 2909 | push_subfile (); |
| 2910 | add_new_header_file (name, valu); |
| 2911 | start_subfile (name, current_subfile->dirname); |
| 2912 | break; |
| 2913 | |
| 2914 | case N_EINCL: |
| 2915 | start_subfile (pop_subfile (), current_subfile->dirname); |
| 2916 | break; |
| 2917 | |
| 2918 | case N_EXCL: |
| 2919 | add_old_header_file (name, valu); |
| 2920 | break; |
| 2921 | |
| 2922 | case N_SLINE: |
| 2923 | /* This type of "symbol" really just records |
| 2924 | one line-number -- core-address correspondence. |
| 2925 | Enter it in the line list for this symbol table. */ |
| 2926 | |
| 2927 | /* Relocate for dynamic loading and for ELF acc fn-relative syms. */ |
| 2928 | valu += function_start_offset; |
| 2929 | |
| 2930 | /* If this is the first SLINE note in the function, record it at |
| 2931 | the start of the function instead of at the listed location. */ |
| 2932 | if (within_function && sline_found_in_function == 0) |
| 2933 | { |
| 2934 | record_line (current_subfile, desc, last_function_start); |
| 2935 | sline_found_in_function = 1; |
| 2936 | } |
| 2937 | else |
| 2938 | record_line (current_subfile, desc, valu); |
| 2939 | break; |
| 2940 | |
| 2941 | case N_BCOMM: |
| 2942 | common_block_start (name, objfile); |
| 2943 | break; |
| 2944 | |
| 2945 | case N_ECOMM: |
| 2946 | common_block_end (objfile); |
| 2947 | break; |
| 2948 | |
| 2949 | /* The following symbol types need to have the appropriate offset added |
| 2950 | to their value; then we process symbol definitions in the name. */ |
| 2951 | |
| 2952 | case N_STSYM: /* Static symbol in data seg */ |
| 2953 | case N_LCSYM: /* Static symbol in BSS seg */ |
| 2954 | case N_ROSYM: /* Static symbol in Read-only data seg */ |
| 2955 | /* HORRID HACK DEPT. However, it's Sun's furgin' fault. |
| 2956 | Solaris2's stabs-in-elf makes *most* symbols relative |
| 2957 | but leaves a few absolute (at least for Solaris 2.1 and version |
| 2958 | 2.0.1 of the SunPRO compiler). N_STSYM and friends sit on the fence. |
| 2959 | .stab "foo:S...",N_STSYM is absolute (ld relocates it) |
| 2960 | .stab "foo:V...",N_STSYM is relative (section base subtracted). |
| 2961 | This leaves us no choice but to search for the 'S' or 'V'... |
| 2962 | (or pass the whole section_offsets stuff down ONE MORE function |
| 2963 | call level, which we really don't want to do). */ |
| 2964 | { |
| 2965 | char *p; |
| 2966 | |
| 2967 | /* .o files and NLMs have non-zero text seg offsets, but don't need |
| 2968 | their static syms offset in this fashion. XXX - This is really a |
| 2969 | crock that should be fixed in the solib handling code so that I |
| 2970 | don't have to work around it here. */ |
| 2971 | |
| 2972 | if (!symfile_relocatable) |
| 2973 | { |
| 2974 | p = strchr (name, ':'); |
| 2975 | if (p != 0 && p[1] == 'S') |
| 2976 | { |
| 2977 | /* The linker relocated it. We don't want to add an |
| 2978 | elfstab_offset_sections-type offset, but we *do* want |
| 2979 | to add whatever solib.c passed to symbol_file_add as |
| 2980 | addr (this is known to affect SunOS4, and I suspect ELF |
| 2981 | too). Since elfstab_offset_sections currently does not |
| 2982 | muck with the text offset (there is no Ttext.text |
| 2983 | symbol), we can get addr from the text offset. If |
| 2984 | elfstab_offset_sections ever starts dealing with the |
| 2985 | text offset, and we still need to do this, we need to |
| 2986 | invent a SECT_OFF_ADDR_KLUDGE or something. */ |
| 2987 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile))((((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 2987, "sect_index_text not initialized"), -1) : objfile-> sect_index_text) == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 2987, "Section index is uninitialized"), -1) : section_offsets ->offsets[((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c", 2987, "sect_index_text not initialized" ), -1) : objfile->sect_index_text)]); |
| 2988 | goto define_a_symbol; |
| 2989 | } |
| 2990 | } |
| 2991 | /* Since it's not the kludge case, re-dispatch to the right handler. */ |
| 2992 | switch (type) |
| 2993 | { |
| 2994 | case N_STSYM: |
| 2995 | goto case_N_STSYM; |
| 2996 | case N_LCSYM: |
| 2997 | goto case_N_LCSYM; |
| 2998 | case N_ROSYM: |
| 2999 | goto case_N_ROSYM; |
| 3000 | default: |
| 3001 | internal_error (__FILE__"/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c", __LINE__3001, "failed internal consistency check"); |
| 3002 | } |
| 3003 | } |
| 3004 | |
| 3005 | case_N_STSYM: /* Static symbol in data seg */ |
| 3006 | case N_DSLINE: /* Source line number, data seg */ |
| 3007 | valu += ANOFFSET (section_offsets, SECT_OFF_DATA (objfile))((((objfile->sect_index_data == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 3007, "sect_index_data not initialized"), -1) : objfile-> sect_index_data) == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 3007, "Section index is uninitialized"), -1) : section_offsets ->offsets[((objfile->sect_index_data == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c", 3007, "sect_index_data not initialized" ), -1) : objfile->sect_index_data)]); |
| 3008 | goto define_a_symbol; |
| 3009 | |
| 3010 | case_N_LCSYM: /* Static symbol in BSS seg */ |
| 3011 | case N_BSLINE: /* Source line number, bss seg */ |
| 3012 | /* N_BROWS: overlaps with N_BSLINE */ |
| 3013 | valu += ANOFFSET (section_offsets, SECT_OFF_BSS (objfile))(((objfile)->sect_index_bss == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 3013, "Section index is uninitialized"), -1) : section_offsets ->offsets[(objfile)->sect_index_bss]); |
| 3014 | goto define_a_symbol; |
| 3015 | |
| 3016 | case_N_ROSYM: /* Static symbol in Read-only data seg */ |
| 3017 | valu += ANOFFSET (section_offsets, SECT_OFF_RODATA (objfile))((((objfile->sect_index_rodata == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 3017, "sect_index_rodata not initialized"), -1) : objfile-> sect_index_rodata) == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 3017, "Section index is uninitialized"), -1) : section_offsets ->offsets[((objfile->sect_index_rodata == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c", 3017, "sect_index_rodata not initialized" ), -1) : objfile->sect_index_rodata)]); |
| 3018 | goto define_a_symbol; |
| 3019 | |
| 3020 | case N_ENTRY: /* Alternate entry point */ |
| 3021 | /* Relocate for dynamic loading */ |
| 3022 | valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile))((((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 3022, "sect_index_text not initialized"), -1) : objfile-> sect_index_text) == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 3022, "Section index is uninitialized"), -1) : section_offsets ->offsets[((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c", 3022, "sect_index_text not initialized" ), -1) : objfile->sect_index_text)]); |
| 3023 | goto define_a_symbol; |
| 3024 | |
| 3025 | /* The following symbol types we don't know how to process. Handle |
| 3026 | them in a "default" way, but complain to people who care. */ |
| 3027 | default: |
| 3028 | case N_CATCH: /* Exception handler catcher */ |
| 3029 | case N_EHDECL: /* Exception handler name */ |
| 3030 | case N_PC: /* Global symbol in Pascal */ |
| 3031 | case N_M2C: /* Modula-2 compilation unit */ |
| 3032 | /* N_MOD2: overlaps with N_EHDECL */ |
| 3033 | case N_SCOPE: /* Modula-2 scope information */ |
| 3034 | case N_ECOML: /* End common (local name) */ |
| 3035 | case N_NBTEXT: /* Gould Non-Base-Register symbols??? */ |
| 3036 | case N_NBDATA: |
| 3037 | case N_NBBSS: |
| 3038 | case N_NBSTS: |
| 3039 | case N_NBLCS: |
| 3040 | unknown_symtype_complaint (hex_string (type)); |
| 3041 | /* FALLTHROUGH */ |
| 3042 | |
| 3043 | /* The following symbol types don't need the address field relocated, |
| 3044 | since it is either unused, or is absolute. */ |
| 3045 | define_a_symbol: |
| 3046 | case N_GSYM: /* Global variable */ |
| 3047 | case N_NSYMS: /* Number of symbols (ultrix) */ |
| 3048 | case N_NOMAP: /* No map? (ultrix) */ |
| 3049 | case N_RSYM: /* Register variable */ |
| 3050 | case N_DEFD: /* Modula-2 GNU module dependency */ |
| 3051 | case N_SSYM: /* Struct or union element */ |
| 3052 | case N_LSYM: /* Local symbol in stack */ |
| 3053 | case N_PSYM: /* Parameter variable */ |
| 3054 | case N_LENG: /* Length of preceding symbol type */ |
| 3055 | if (name) |
| 3056 | { |
| 3057 | int deftype; |
| 3058 | char *colon_pos = strchr (name, ':'); |
| 3059 | if (colon_pos == NULL((void*)0)) |
| 3060 | deftype = '\0'; |
| 3061 | else |
| 3062 | deftype = colon_pos[1]; |
| 3063 | |
| 3064 | switch (deftype) |
| 3065 | { |
| 3066 | case 'f': |
| 3067 | case 'F': |
| 3068 | function_stab_type = type; |
| 3069 | |
| 3070 | #ifdef SOFUN_ADDRESS_MAYBE_MISSING |
| 3071 | /* Deal with the SunPRO 3.0 compiler which omits the address |
| 3072 | from N_FUN symbols. */ |
| 3073 | if (type == N_FUN |
| 3074 | && valu == ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile))((((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 3074, "sect_index_text not initialized"), -1) : objfile-> sect_index_text) == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c" , 3074, "Section index is uninitialized"), -1) : section_offsets ->offsets[((objfile->sect_index_text == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/dbxread.c", 3074, "sect_index_text not initialized" ), -1) : objfile->sect_index_text)])) |
| 3075 | { |
| 3076 | CORE_ADDR minsym_valu = |
| 3077 | find_stab_function_addr (name, last_source_file, objfile); |
| 3078 | |
| 3079 | /* find_stab_function_addr will return 0 if the minimal |
| 3080 | symbol wasn't found. (Unfortunately, this might also |
| 3081 | be a valid address.) Anyway, if it *does* return 0, |
| 3082 | it is likely that the value was set correctly to begin |
| 3083 | with... */ |
| 3084 | if (minsym_valu != 0) |
| 3085 | valu = minsym_valu; |
| 3086 | } |
| 3087 | #endif |
| 3088 | |
| 3089 | if (block_address_function_relative) |
| 3090 | /* For Solaris 2.0 compilers, the block addresses and |
| 3091 | N_SLINE's are relative to the start of the |
| 3092 | function. On normal systems, and when using gcc on |
| 3093 | Solaris 2.0, these addresses are just absolute, or |
| 3094 | relative to the N_SO, depending on |
| 3095 | BLOCK_ADDRESS_ABSOLUTE. */ |
| 3096 | function_start_offset = valu; |
| 3097 | |
| 3098 | within_function = 1; |
| 3099 | |
| 3100 | if (context_stack_depth > 1) |
| 3101 | { |
| 3102 | complaint (&symfile_complaints, |
| 3103 | "unmatched N_LBRAC before symtab pos %d", symnum); |
| 3104 | break; |
| 3105 | } |
| 3106 | |
| 3107 | if (context_stack_depth > 0) |
| 3108 | { |
| 3109 | new = pop_context (); |
| 3110 | /* Make a block for the local symbols within. */ |
| 3111 | finish_block (new->name, &local_symbols, new->old_blocks, |
| 3112 | new->start_addr, valu, objfile); |
| 3113 | } |
| 3114 | |
| 3115 | new = push_context (0, valu); |
| 3116 | new->name = define_symbol (valu, name, desc, type, objfile); |
| 3117 | break; |
| 3118 | |
| 3119 | default: |
| 3120 | define_symbol (valu, name, desc, type, objfile); |
| 3121 | break; |
| 3122 | } |
| 3123 | } |
| 3124 | break; |
| 3125 | |
| 3126 | /* We use N_OPT to carry the gcc2_compiled flag. Sun uses it |
| 3127 | for a bunch of other flags, too. Someday we may parse their |
| 3128 | flags; for now we ignore theirs and hope they'll ignore ours. */ |
| 3129 | case N_OPT: /* Solaris 2: Compiler options */ |
| 3130 | if (name) |
| 3131 | { |
| 3132 | if (strcmp (name, GCC2_COMPILED_FLAG_SYMBOL"gcc2_compiled.") == 0) |
| 3133 | { |
| 3134 | processing_gcc_compilation = 2; |
| 3135 | #if 0 /* Works, but is experimental. -fnf */ |
| 3136 | /* For now, stay with AUTO_DEMANGLING for g++ output, as we don't |
| 3137 | know whether it will use the old style or v3 mangling. */ |
| 3138 | if (AUTO_DEMANGLING(((int) current_demangling_style) & (1 << 8))) |
| 3139 | { |
| 3140 | set_demangling_style (GNU_DEMANGLING_STYLE_STRING"gnu"); |
| 3141 | } |
| 3142 | #endif |
| 3143 | } |
| 3144 | else |
| 3145 | n_opt_found = 1; |
| 3146 | } |
| 3147 | break; |
| 3148 | |
| 3149 | case N_MAIN: /* Name of main routine. */ |
| 3150 | /* FIXME: If one has a symbol file with N_MAIN and then replaces |
| 3151 | it with a symbol file with "main" and without N_MAIN. I'm |
| 3152 | not sure exactly what rule to follow but probably something |
| 3153 | like: N_MAIN takes precedence over "main" no matter what |
| 3154 | objfile it is in; If there is more than one N_MAIN, choose |
| 3155 | the one in the symfile_objfile; If there is more than one |
| 3156 | N_MAIN within a given objfile, complain() and choose |
| 3157 | arbitrarily. (kingdon) */ |
| 3158 | if (name != NULL((void*)0)) |
| 3159 | set_main_name (name); |
| 3160 | break; |
| 3161 | |
| 3162 | /* The following symbol types can be ignored. */ |
| 3163 | case N_OBJ: /* Solaris 2: Object file dir and name */ |
| 3164 | case N_PATCH: /* Solaris2: Patch Run Time Checker. */ |
| 3165 | /* N_UNDF: Solaris 2: file separator mark */ |
| 3166 | /* N_UNDF: -- we will never encounter it, since we only process one |
| 3167 | file's symbols at once. */ |
| 3168 | case N_ENDM: /* Solaris 2: End of module */ |
| 3169 | case N_ALIAS: /* SunPro F77: alias name, ignore for now. */ |
| 3170 | break; |
| 3171 | } |
| 3172 | |
| 3173 | /* '#' is a GNU C extension to allow one symbol to refer to another |
| 3174 | related symbol. |
| 3175 | |
| 3176 | Generally this is used so that an alias can refer to its main |
| 3177 | symbol. */ |
| 3178 | if (name[0] == '#') |
| 3179 | { |
| 3180 | /* Initialize symbol reference names and determine if this is |
| 3181 | a definition. If symbol reference is being defined, go |
| 3182 | ahead and add it. Otherwise, just return sym. */ |
| 3183 | |
| 3184 | char *s = name; |
| 3185 | int refnum; |
| 3186 | |
| 3187 | /* If this stab defines a new reference ID that is not on the |
| 3188 | reference list, then put it on the reference list. |
| 3189 | |
| 3190 | We go ahead and advance NAME past the reference, even though |
| 3191 | it is not strictly necessary at this time. */ |
| 3192 | refnum = symbol_reference_defined (&s); |
| 3193 | if (refnum >= 0) |
| 3194 | if (!ref_search (refnum)) |
| 3195 | ref_add (refnum, 0, name, valu); |
| 3196 | name = s; |
| 3197 | } |
| 3198 | |
| 3199 | |
| 3200 | previous_stab_code = type; |
| 3201 | } |
| 3202 | |
| 3203 | /* FIXME: The only difference between this and elfstab_build_psymtabs |
| 3204 | is the call to install_minimal_symbols for elf, and the support for |
| 3205 | split sections. If the differences are really that small, the code |
| 3206 | should be shared. */ |
| 3207 | |
| 3208 | /* Scan and build partial symbols for an coff symbol file. |
| 3209 | The coff file has already been processed to get its minimal symbols. |
| 3210 | |
| 3211 | This routine is the equivalent of dbx_symfile_init and dbx_symfile_read |
| 3212 | rolled into one. |
| 3213 | |
| 3214 | OBJFILE is the object file we are reading symbols from. |
| 3215 | ADDR is the address relative to which the symbols are (e.g. |
| 3216 | the base address of the text segment). |
| 3217 | MAINLINE is true if we are reading the main symbol |
| 3218 | table (as opposed to a shared lib or dynamically loaded file). |
| 3219 | TEXTADDR is the address of the text section. |
| 3220 | TEXTSIZE is the size of the text section. |
| 3221 | STABSECTS is the list of .stab sections in OBJFILE. |
| 3222 | STABSTROFFSET and STABSTRSIZE define the location in OBJFILE where the |
| 3223 | .stabstr section exists. |
| 3224 | |
| 3225 | This routine is mostly copied from dbx_symfile_init and dbx_symfile_read, |
| 3226 | adjusted for coff details. */ |
| 3227 | |
| 3228 | void |
| 3229 | coffstab_build_psymtabs (struct objfile *objfile, int mainline, |
| 3230 | CORE_ADDR textaddr, unsigned int textsize, |
| 3231 | struct stab_section_list *stabsects, |
| 3232 | file_ptr stabstroffset, unsigned int stabstrsize) |
| 3233 | { |
| 3234 | int val; |
| 3235 | bfd *sym_bfd = objfile->obfd; |
| 3236 | char *name = bfd_get_filename (sym_bfd)((char *) (sym_bfd)->filename); |
| 3237 | struct dbx_symfile_info *info; |
| 3238 | unsigned int stabsize; |
| 3239 | |
| 3240 | /* There is already a dbx_symfile_info allocated by our caller. |
| 3241 | It might even contain some info from the coff symtab to help us. */ |
| 3242 | info = objfile->sym_stab_info; |
| 3243 | |
| 3244 | DBX_TEXT_ADDR (objfile)(((objfile)->sym_stab_info)->text_addr) = textaddr; |
| 3245 | DBX_TEXT_SIZE (objfile)(((objfile)->sym_stab_info)->text_size) = textsize; |
| 3246 | |
| 3247 | #define COFF_STABS_SYMBOL_SIZE12 12 /* XXX FIXME XXX */ |
| 3248 | DBX_SYMBOL_SIZE (objfile)(((objfile)->sym_stab_info)->symbol_size) = COFF_STABS_SYMBOL_SIZE12; |
| 3249 | DBX_STRINGTAB_SIZE (objfile)(((objfile)->sym_stab_info)->stringtab_size) = stabstrsize; |
| 3250 | |
| 3251 | if (stabstrsize > bfd_get_size (sym_bfd)) |
| 3252 | error ("ridiculous string table size: %d bytes", stabstrsize); |
| 3253 | DBX_STRINGTAB (objfile)(((objfile)->sym_stab_info)->stringtab) = (char *) |
| 3254 | obstack_alloc (&objfile->objfile_obstack, stabstrsize + 1)__extension__ ({ struct obstack *__h = (&objfile->objfile_obstack ); __extension__ ({ struct obstack *__o = (__h); int __len = ( (stabstrsize + 1)); 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; }); }); |
| 3255 | OBJSTAT (objfile, sz_strtab += stabstrsize + 1)(objfile -> stats.sz_strtab += stabstrsize + 1); |
| 3256 | |
| 3257 | /* Now read in the string table in one big gulp. */ |
| 3258 | |
| 3259 | val = bfd_seek (sym_bfd, stabstroffset, SEEK_SET0); |
| 3260 | if (val < 0) |
| 3261 | perror_with_name (name); |
| 3262 | val = bfd_bread (DBX_STRINGTAB (objfile)(((objfile)->sym_stab_info)->stringtab), stabstrsize, sym_bfd); |
| 3263 | if (val != stabstrsize) |
| 3264 | perror_with_name (name); |
| 3265 | |
| 3266 | stabsread_new_init (); |
| 3267 | buildsym_new_init (); |
| 3268 | free_header_files (); |
| 3269 | init_header_files (); |
| 3270 | |
| 3271 | processing_acc_compilation = 1; |
| 3272 | |
| 3273 | /* In a coff file, we've already installed the minimal symbols that came |
| 3274 | from the coff (non-stab) symbol table, so always act like an |
| 3275 | incremental load here. */ |
| 3276 | if (stabsects->next == NULL((void*)0)) |
| 3277 | { |
| 3278 | stabsize = bfd_section_size (sym_bfd, stabsects->section)((stabsects->section)->_raw_size); |
| 3279 | DBX_SYMCOUNT (objfile)(((objfile)->sym_stab_info)->symcount) = stabsize / DBX_SYMBOL_SIZE (objfile)(((objfile)->sym_stab_info)->symbol_size); |
| 3280 | DBX_SYMTAB_OFFSET (objfile)(((objfile)->sym_stab_info)->symtab_offset) = stabsects->section->filepos; |
| 3281 | } |
| 3282 | else |
| 3283 | { |
| 3284 | struct stab_section_list *stabsect; |
| 3285 | |
| 3286 | DBX_SYMCOUNT (objfile)(((objfile)->sym_stab_info)->symcount) = 0; |
| 3287 | for (stabsect = stabsects; stabsect != NULL((void*)0); stabsect = stabsect->next) |
| 3288 | { |
| 3289 | stabsize = bfd_section_size (sym_bfd, stabsect->section)((stabsect->section)->_raw_size); |
| 3290 | DBX_SYMCOUNT (objfile)(((objfile)->sym_stab_info)->symcount) += stabsize / DBX_SYMBOL_SIZE (objfile)(((objfile)->sym_stab_info)->symbol_size); |
| 3291 | } |
| 3292 | |
| 3293 | DBX_SYMTAB_OFFSET (objfile)(((objfile)->sym_stab_info)->symtab_offset) = stabsects->section->filepos; |
| 3294 | |
| 3295 | symbuf_sections = stabsects->next; |
| 3296 | symbuf_left = bfd_section_size (sym_bfd, stabsects->section)((stabsects->section)->_raw_size); |
| 3297 | symbuf_read = 0; |
| 3298 | } |
| 3299 | |
| 3300 | dbx_symfile_read (objfile, 0); |
| 3301 | } |
| 3302 | |
| 3303 | /* Scan and build partial symbols for an ELF symbol file. |
| 3304 | This ELF file has already been processed to get its minimal symbols. |
| 3305 | |
| 3306 | This routine is the equivalent of dbx_symfile_init and dbx_symfile_read |
| 3307 | rolled into one. |
| 3308 | |
| 3309 | OBJFILE is the object file we are reading symbols from. |
| 3310 | ADDR is the address relative to which the symbols are (e.g. |
| 3311 | the base address of the text segment). |
| 3312 | MAINLINE is true if we are reading the main symbol |
| 3313 | table (as opposed to a shared lib or dynamically loaded file). |
| 3314 | STABSECT is the BFD section information for the .stab section. |
| 3315 | STABSTROFFSET and STABSTRSIZE define the location in OBJFILE where the |
| 3316 | .stabstr section exists. |
| 3317 | |
| 3318 | This routine is mostly copied from dbx_symfile_init and dbx_symfile_read, |
| 3319 | adjusted for elf details. */ |
| 3320 | |
| 3321 | void |
| 3322 | elfstab_build_psymtabs (struct objfile *objfile, int mainline, |
| 3323 | asection *stabsect, |
| 3324 | file_ptr stabstroffset, unsigned int stabstrsize) |
| 3325 | { |
| 3326 | int val; |
| 3327 | bfd *sym_bfd = objfile->obfd; |
| 3328 | char *name = bfd_get_filename (sym_bfd)((char *) (sym_bfd)->filename); |
| 3329 | struct dbx_symfile_info *info; |
| 3330 | struct cleanup *back_to = NULL((void*)0); |
| 3331 | |
| 3332 | /* There is already a dbx_symfile_info allocated by our caller. |
| 3333 | It might even contain some info from the ELF symtab to help us. */ |
| 3334 | info = objfile->sym_stab_info; |
Value stored to 'info' is never read | |
| 3335 | |
| 3336 | /* Find the first and last text address. dbx_symfile_read seems to |
| 3337 | want this. */ |
| 3338 | find_text_range (sym_bfd, objfile); |
| 3339 | |
| 3340 | #define ELF_STABS_SYMBOL_SIZE12 12 /* XXX FIXME XXX */ |
| 3341 | DBX_SYMBOL_SIZE (objfile)(((objfile)->sym_stab_info)->symbol_size) = ELF_STABS_SYMBOL_SIZE12; |
| 3342 | DBX_SYMCOUNT (objfile)(((objfile)->sym_stab_info)->symcount) |
| 3343 | = bfd_section_size (objfile->obfd, stabsect)((stabsect)->_raw_size) / DBX_SYMBOL_SIZE (objfile)(((objfile)->sym_stab_info)->symbol_size); |
| 3344 | DBX_STRINGTAB_SIZE (objfile)(((objfile)->sym_stab_info)->stringtab_size) = stabstrsize; |
| 3345 | DBX_SYMTAB_OFFSET (objfile)(((objfile)->sym_stab_info)->symtab_offset) = stabsect->filepos; |
| 3346 | DBX_STAB_SECTION (objfile)(((objfile)->sym_stab_info)->stab_section) = stabsect; |
| 3347 | |
| 3348 | if (stabstrsize > bfd_get_size (sym_bfd)) |
| 3349 | error ("ridiculous string table size: %d bytes", stabstrsize); |
| 3350 | DBX_STRINGTAB (objfile)(((objfile)->sym_stab_info)->stringtab) = (char *) |
| 3351 | obstack_alloc (&objfile->objfile_obstack, stabstrsize + 1)__extension__ ({ struct obstack *__h = (&objfile->objfile_obstack ); __extension__ ({ struct obstack *__o = (__h); int __len = ( (stabstrsize + 1)); 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; }); }); |
| 3352 | OBJSTAT (objfile, sz_strtab += stabstrsize + 1)(objfile -> stats.sz_strtab += stabstrsize + 1); |
| 3353 | |
| 3354 | /* Now read in the string table in one big gulp. */ |
| 3355 | |
| 3356 | val = bfd_seek (sym_bfd, stabstroffset, SEEK_SET0); |
| 3357 | if (val < 0) |
| 3358 | perror_with_name (name); |
| 3359 | val = bfd_bread (DBX_STRINGTAB (objfile)(((objfile)->sym_stab_info)->stringtab), stabstrsize, sym_bfd); |
| 3360 | if (val != stabstrsize) |
| 3361 | perror_with_name (name); |
| 3362 | |
| 3363 | stabsread_new_init (); |
| 3364 | buildsym_new_init (); |
| 3365 | free_header_files (); |
| 3366 | init_header_files (); |
| 3367 | |
| 3368 | processing_acc_compilation = 1; |
| 3369 | |
| 3370 | symbuf_read = 0; |
| 3371 | symbuf_left = bfd_section_size (objfile->obfd, stabsect)((stabsect)->_raw_size); |
| 3372 | stabs_data = symfile_relocate_debug_section (objfile->obfd, stabsect, NULL((void*)0)); |
| 3373 | if (stabs_data) |
| 3374 | back_to = make_cleanup (free_current_contents, (void *) &stabs_data); |
| 3375 | |
| 3376 | /* In an elf file, we've already installed the minimal symbols that came |
| 3377 | from the elf (non-stab) symbol table, so always act like an |
| 3378 | incremental load here. dbx_symfile_read should not generate any new |
| 3379 | minimal symbols, since we will have already read the ELF dynamic symbol |
| 3380 | table and normal symbol entries won't be in the ".stab" section; but in |
| 3381 | case it does, it will install them itself. */ |
| 3382 | dbx_symfile_read (objfile, 0); |
| 3383 | |
| 3384 | if (back_to) |
| 3385 | do_cleanups (back_to); |
| 3386 | } |
| 3387 | |
| 3388 | /* Scan and build partial symbols for a file with special sections for stabs |
| 3389 | and stabstrings. The file has already been processed to get its minimal |
| 3390 | symbols, and any other symbols that might be necessary to resolve GSYMs. |
| 3391 | |
| 3392 | This routine is the equivalent of dbx_symfile_init and dbx_symfile_read |
| 3393 | rolled into one. |
| 3394 | |
| 3395 | OBJFILE is the object file we are reading symbols from. |
| 3396 | ADDR is the address relative to which the symbols are (e.g. the base address |
| 3397 | of the text segment). |
| 3398 | MAINLINE is true if we are reading the main symbol table (as opposed to a |
| 3399 | shared lib or dynamically loaded file). |
| 3400 | STAB_NAME is the name of the section that contains the stabs. |
| 3401 | STABSTR_NAME is the name of the section that contains the stab strings. |
| 3402 | |
| 3403 | This routine is mostly copied from dbx_symfile_init and dbx_symfile_read. */ |
| 3404 | |
| 3405 | void |
| 3406 | stabsect_build_psymtabs (struct objfile *objfile, int mainline, char *stab_name, |
| 3407 | char *stabstr_name, char *text_name) |
| 3408 | { |
| 3409 | int val; |
| 3410 | bfd *sym_bfd = objfile->obfd; |
| 3411 | char *name = bfd_get_filename (sym_bfd)((char *) (sym_bfd)->filename); |
| 3412 | asection *stabsect; |
| 3413 | asection *stabstrsect; |
| 3414 | asection *text_sect; |
| 3415 | |
| 3416 | stabsect = bfd_get_section_by_name (sym_bfd, stab_name); |
| 3417 | stabstrsect = bfd_get_section_by_name (sym_bfd, stabstr_name); |
| 3418 | |
| 3419 | if (!stabsect) |
| 3420 | return; |
| 3421 | |
| 3422 | if (!stabstrsect) |
| 3423 | error ("stabsect_build_psymtabs: Found stabs (%s), but not string section (%s)", |
| 3424 | stab_name, stabstr_name); |
| 3425 | |
| 3426 | objfile->sym_stab_info = (struct dbx_symfile_info *) |
| 3427 | xmalloc (sizeof (struct dbx_symfile_info)); |
| 3428 | memset (objfile->sym_stab_info, 0, sizeof (struct dbx_symfile_info)); |
| 3429 | |
| 3430 | text_sect = bfd_get_section_by_name (sym_bfd, text_name); |
| 3431 | if (!text_sect) |
| 3432 | error ("Can't find %s section in symbol file", text_name); |
| 3433 | DBX_TEXT_ADDR (objfile)(((objfile)->sym_stab_info)->text_addr) = bfd_section_vma (sym_bfd, text_sect)((text_sect)->vma); |
| 3434 | DBX_TEXT_SIZE (objfile)(((objfile)->sym_stab_info)->text_size) = bfd_section_size (sym_bfd, text_sect)((text_sect)->_raw_size); |
| 3435 | |
| 3436 | DBX_SYMBOL_SIZE (objfile)(((objfile)->sym_stab_info)->symbol_size) = sizeof (struct external_nlist); |
| 3437 | DBX_SYMCOUNT (objfile)(((objfile)->sym_stab_info)->symcount) = bfd_section_size (sym_bfd, stabsect)((stabsect)->_raw_size) |
| 3438 | / DBX_SYMBOL_SIZE (objfile)(((objfile)->sym_stab_info)->symbol_size); |
| 3439 | DBX_STRINGTAB_SIZE (objfile)(((objfile)->sym_stab_info)->stringtab_size) = bfd_section_size (sym_bfd, stabstrsect)((stabstrsect)->_raw_size); |
| 3440 | DBX_SYMTAB_OFFSET (objfile)(((objfile)->sym_stab_info)->symtab_offset) = stabsect->filepos; /* XXX - FIXME: POKING INSIDE BFD DATA STRUCTURES */ |
| 3441 | |
| 3442 | if (DBX_STRINGTAB_SIZE (objfile)(((objfile)->sym_stab_info)->stringtab_size) > bfd_get_size (sym_bfd)) |
| 3443 | error ("ridiculous string table size: %d bytes", DBX_STRINGTAB_SIZE (objfile)(((objfile)->sym_stab_info)->stringtab_size)); |
| 3444 | DBX_STRINGTAB (objfile)(((objfile)->sym_stab_info)->stringtab) = (char *) |
| 3445 | obstack_alloc (&objfile->objfile_obstack, DBX_STRINGTAB_SIZE (objfile) + 1)__extension__ ({ struct obstack *__h = (&objfile->objfile_obstack ); __extension__ ({ struct obstack *__o = (__h); int __len = ( ((((objfile)->sym_stab_info)->stringtab_size) + 1)); 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; }); }); |
| 3446 | OBJSTAT (objfile, sz_strtab += DBX_STRINGTAB_SIZE (objfile) + 1)(objfile -> stats.sz_strtab += (((objfile)->sym_stab_info )->stringtab_size) + 1); |
| 3447 | |
| 3448 | /* Now read in the string table in one big gulp. */ |
| 3449 | |
| 3450 | val = bfd_get_section_contents (sym_bfd, /* bfd */ |
| 3451 | stabstrsect, /* bfd section */ |
| 3452 | DBX_STRINGTAB (objfile)(((objfile)->sym_stab_info)->stringtab), /* input buffer */ |
| 3453 | 0, /* offset into section */ |
| 3454 | DBX_STRINGTAB_SIZE (objfile)(((objfile)->sym_stab_info)->stringtab_size)); /* amount to read */ |
| 3455 | |
| 3456 | if (!val) |
| 3457 | perror_with_name (name); |
| 3458 | |
| 3459 | stabsread_new_init (); |
| 3460 | buildsym_new_init (); |
| 3461 | free_header_files (); |
| 3462 | init_header_files (); |
| 3463 | |
| 3464 | /* Now, do an incremental load */ |
| 3465 | |
| 3466 | processing_acc_compilation = 1; |
| 3467 | dbx_symfile_read (objfile, 0); |
| 3468 | } |
| 3469 | |
| 3470 | static struct sym_fns aout_sym_fns = |
| 3471 | { |
| 3472 | bfd_target_aout_flavour, |
| 3473 | dbx_new_init, /* sym_new_init: init anything gbl to entire symtab */ |
| 3474 | dbx_symfile_init, /* sym_init: read initial info, setup for sym_read() */ |
| 3475 | dbx_symfile_read, /* sym_read: read a symbol file into symtab */ |
| 3476 | dbx_symfile_finish, /* sym_finish: finished with file, cleanup */ |
| 3477 | default_symfile_offsets, /* sym_offsets: parse user's offsets to internal form */ |
| 3478 | NULL((void*)0) /* next: pointer to next struct sym_fns */ |
| 3479 | }; |
| 3480 | |
| 3481 | void |
| 3482 | _initialize_dbxread (void) |
| 3483 | { |
| 3484 | add_symtab_fns (&aout_sym_fns); |
| 3485 | } |