1/* addr2line.c -- convert addresses to line number and function name 2 Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2006 3 Free Software Foundation, Inc. 4 Contributed by Ulrich Lauther <Ulrich.Lauther@mchp.siemens.de> 5 6 This file is part of GNU Binutils. 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, or (at your option) 11 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, 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ 21 22/* Derived from objdump.c and nm.c by Ulrich.Lauther@mchp.siemens.de 23 24 Usage: 25 addr2line [options] addr addr ... 26 or 27 addr2line [options] 28 29 both forms write results to stdout, the second form reads addresses 30 to be converted from stdin. */ 31 32#include "config.h" 33#include <string.h> 34 35#include "bfd.h" 36#include "getopt.h" 37#include "libiberty.h" 38#include "demangle.h" 39#include "bucomm.h" 40#include "budemang.h" 41 42static bfd_boolean unwind_inlines; /* -i, unwind inlined functions. */ 43static bfd_boolean with_functions; /* -f, show function names. */ 44static bfd_boolean do_demangle; /* -C, demangle names. */ 45static bfd_boolean base_names; /* -s, strip directory names. */ 46 47static int naddr; /* Number of addresses to process. */ 48static char **addr; /* Hex addresses to process. */ 49 50static asymbol **syms; /* Symbol table. */ 51 52static struct option long_options[] = 53{ 54 {"basenames", no_argument, NULL, 's'}, 55 {"demangle", optional_argument, NULL, 'C'}, 56 {"exe", required_argument, NULL, 'e'}, 57 {"functions", no_argument, NULL, 'f'}, 58 {"inlines", no_argument, NULL, 'i'}, 59 {"section", required_argument, NULL, 'j'}, 60 {"target", required_argument, NULL, 'b'}, 61 {"help", no_argument, NULL, 'H'}, 62 {"version", no_argument, NULL, 'V'}, 63 {0, no_argument, 0, 0} 64}; 65 66static void usage (FILE *, int); 67static void slurp_symtab (bfd *); 68static void find_address_in_section (bfd *, asection *, void *); 69static void find_offset_in_section (bfd *, asection *); 70static void translate_addresses (bfd *, asection *); 71 72/* Print a usage message to STREAM and exit with STATUS. */ 73 74static void 75usage (FILE *stream, int status) 76{ 77 fprintf (stream, _("Usage: %s [option(s)] [addr(s)]\n"), program_name); 78 fprintf (stream, _(" Convert addresses into line number/file name pairs.\n")); 79 fprintf (stream, _(" If no addresses are specified on the command line, they will be read from stdin\n")); 80 fprintf (stream, _(" The options are:\n\ 81 @<file> Read options from <file>\n\ 82 -b --target=<bfdname> Set the binary file format\n\ 83 -e --exe=<executable> Set the input file name (default is a.out)\n\ 84 -i --inlines Unwind inlined functions\n\ 85 -j --section=<name> Read section-relative offsets instead of addresses\n\ 86 -s --basenames Strip directory names\n\ 87 -f --functions Show function names\n\ 88 -C --demangle[=style] Demangle function names\n\ 89 -h --help Display this information\n\ 90 -v --version Display the program's version\n\ 91\n")); 92 93 list_supported_targets (program_name, stream); 94 if (status == 0) 95 fprintf (stream, _("Report bugs to %s\n"), REPORT_BUGS_TO); 96 exit (status); 97} 98 99/* Read in the symbol table. */ 100 101static void 102slurp_symtab (bfd *abfd) 103{ 104 long symcount; 105 unsigned int size; 106 107 if ((bfd_get_file_flags (abfd) & HAS_SYMS) == 0) 108 return; 109 110 symcount = bfd_read_minisymbols (abfd, FALSE, (void *) &syms, &size); 111 if (symcount == 0) 112 symcount = bfd_read_minisymbols (abfd, TRUE /* dynamic */, (void *) &syms, &size); 113 114 if (symcount < 0) 115 bfd_fatal (bfd_get_filename (abfd)); 116} 117 118/* These global variables are used to pass information between 119 translate_addresses and find_address_in_section. */ 120 121static bfd_vma pc; 122static const char *filename; 123static const char *functionname; 124static unsigned int line; 125static bfd_boolean found; 126 127/* Look for an address in a section. This is called via 128 bfd_map_over_sections. */ 129 130static void 131find_address_in_section (bfd *abfd, asection *section, 132 void *data ATTRIBUTE_UNUSED) 133{ 134 bfd_vma vma; 135 bfd_size_type size; 136 137 if (found) 138 return; 139 140 if ((bfd_get_section_flags (abfd, section) & SEC_ALLOC) == 0) 141 return; 142 143 vma = bfd_get_section_vma (abfd, section); 144 if (pc < vma) 145 return; 146 147 size = bfd_get_section_size (section); 148 if (pc >= vma + size) 149 return; 150 151 found = bfd_find_nearest_line (abfd, section, syms, pc - vma, 152 &filename, &functionname, &line); 153} 154 155/* Look for an offset in a section. This is directly called. */ 156 157static void 158find_offset_in_section (bfd *abfd, asection *section) 159{ 160 bfd_size_type size; 161 162 if (found) 163 return; 164 165 if ((bfd_get_section_flags (abfd, section) & SEC_ALLOC) == 0) 166 return; 167 168 size = bfd_get_section_size (section); 169 if (pc >= size) 170 return; 171 172 found = bfd_find_nearest_line (abfd, section, syms, pc, 173 &filename, &functionname, &line); 174} 175 176/* Read hexadecimal addresses from stdin, translate into 177 file_name:line_number and optionally function name. */ 178 179static void 180translate_addresses (bfd *abfd, asection *section) 181{ 182 int read_stdin = (naddr == 0); 183 184 for (;;) 185 { 186 if (read_stdin) 187 { 188 char addr_hex[100]; 189 190 if (fgets (addr_hex, sizeof addr_hex, stdin) == NULL) 191 break; 192 pc = bfd_scan_vma (addr_hex, NULL, 16); 193 } 194 else 195 { 196 if (naddr <= 0) 197 break; 198 --naddr; 199 pc = bfd_scan_vma (*addr++, NULL, 16); 200 } 201 202 found = FALSE; 203 if (section) 204 find_offset_in_section (abfd, section); 205 else 206 bfd_map_over_sections (abfd, find_address_in_section, NULL); 207 208 if (! found) 209 { 210 if (with_functions) 211 printf ("??\n"); 212 printf ("??:0\n"); 213 } 214 else 215 { 216 do { 217 if (with_functions) 218 { 219 const char *name; 220 char *alloc = NULL; 221 222 name = functionname; 223 if (name == NULL || *name == '\0') 224 name = "??"; 225 else if (do_demangle) 226 { 227 alloc = demangle (abfd, name); 228 name = alloc; 229 } 230 231 printf ("%s\n", name); 232 233 if (alloc != NULL) 234 free (alloc); 235 } 236 237 if (base_names && filename != NULL) 238 { 239 char *h; 240 241 h = strrchr (filename, '/'); 242 if (h != NULL) 243 filename = h + 1; 244 } 245 246 printf ("%s:%u\n", filename ? filename : "??", line); 247 if (!unwind_inlines) 248 found = FALSE; 249 else 250 found = bfd_find_inliner_info (abfd, &filename, &functionname, &line); 251 } while (found); 252 253 } 254 255 /* fflush() is essential for using this command as a server 256 child process that reads addresses from a pipe and responds 257 with line number information, processing one address at a 258 time. */ 259 fflush (stdout); 260 } 261} 262 263/* Process a file. Returns an exit value for main(). */ 264 265static int 266process_file (const char *file_name, const char *section_name, 267 const char *target) 268{ 269 bfd *abfd; 270 asection *section; 271 char **matching; 272 273 if (get_file_size (file_name) < 1) 274 return 1; 275 276 abfd = bfd_openr (file_name, target); 277 if (abfd == NULL) 278 bfd_fatal (file_name); 279 280 if (bfd_check_format (abfd, bfd_archive)) 281 fatal (_("%s: cannot get addresses from archive"), file_name); 282 283 if (! bfd_check_format_matches (abfd, bfd_object, &matching)) 284 { 285 bfd_nonfatal (bfd_get_filename (abfd)); 286 if (bfd_get_error () == bfd_error_file_ambiguously_recognized) 287 { 288 list_matching_formats (matching); 289 free (matching); 290 } 291 xexit (1); 292 } 293 294 if (section_name != NULL) 295 { 296 section = bfd_get_section_by_name (abfd, section_name); 297 if (section == NULL) 298 fatal (_("%s: cannot find section %s"), file_name, section_name); 299 } 300 else 301 section = NULL; 302 303 slurp_symtab (abfd); 304 305 translate_addresses (abfd, section); 306 307 if (syms != NULL) 308 { 309 free (syms); 310 syms = NULL; 311 } 312 313 bfd_close (abfd); 314 315 return 0; 316} 317 318int 319main (int argc, char **argv) 320{ 321 const char *file_name; 322 const char *section_name; 323 char *target; 324 int c; 325 326#if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES) 327 setlocale (LC_MESSAGES, ""); 328#endif 329#if defined (HAVE_SETLOCALE) 330 setlocale (LC_CTYPE, ""); 331#endif 332 bindtextdomain (PACKAGE, LOCALEDIR); 333 textdomain (PACKAGE); 334 335 program_name = *argv; 336 xmalloc_set_program_name (program_name); 337 338 expandargv (&argc, &argv); 339 340 bfd_init (); 341 set_default_bfd_target (); 342 343 file_name = NULL; 344 section_name = NULL; 345 target = NULL; 346 while ((c = getopt_long (argc, argv, "b:Ce:sfHhij:Vv", long_options, (int *) 0)) 347 != EOF) 348 { 349 switch (c) 350 { 351 case 0: 352 break; /* We've been given a long option. */ 353 case 'b': 354 target = optarg; 355 break; 356 case 'C': 357 do_demangle = TRUE; 358 if (optarg != NULL) 359 { 360 enum demangling_styles style; 361 362 style = cplus_demangle_name_to_style (optarg); 363 if (style == unknown_demangling) 364 fatal (_("unknown demangling style `%s'"), 365 optarg); 366 367 cplus_demangle_set_style (style); 368 } 369 break; 370 case 'e': 371 file_name = optarg; 372 break; 373 case 's': 374 base_names = TRUE; 375 break; 376 case 'f': 377 with_functions = TRUE; 378 break; 379 case 'v': 380 case 'V': 381 print_version ("addr2line"); 382 break; 383 case 'h': 384 case 'H': 385 usage (stdout, 0); 386 break; 387 case 'i': 388 unwind_inlines = TRUE; 389 break; 390 case 'j': 391 section_name = optarg; 392 break; 393 default: 394 usage (stderr, 1); 395 break; 396 } 397 } 398 399 if (file_name == NULL) 400 file_name = "a.out"; 401 402 addr = argv + optind; 403 naddr = argc - optind; 404 405 return process_file (file_name, section_name, target); 406} 407