1/* addr2line.c -- convert addresses to line number and function name 2 Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2006, 2007 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 "sysdep.h" 33#include "bfd.h" 34#include "getopt.h" 35#include "libiberty.h" 36#include "demangle.h" 37#include "bucomm.h" 38 39static bfd_boolean unwind_inlines; /* -i, unwind inlined functions. */ 40static bfd_boolean with_functions; /* -f, show function names. */ 41static bfd_boolean do_demangle; /* -C, demangle names. */ 42static bfd_boolean base_names; /* -s, strip directory names. */ 43 44static int naddr; /* Number of addresses to process. */ 45static char **addr; /* Hex addresses to process. */ 46 47static asymbol **syms; /* Symbol table. */ 48 49static struct option long_options[] = 50{ 51 {"basenames", no_argument, NULL, 's'}, 52 {"demangle", optional_argument, NULL, 'C'}, 53 {"exe", required_argument, NULL, 'e'}, 54 {"functions", no_argument, NULL, 'f'}, 55 {"inlines", no_argument, NULL, 'i'}, 56 {"section", required_argument, NULL, 'j'}, 57 {"target", required_argument, NULL, 'b'}, 58 {"help", no_argument, NULL, 'H'}, 59 {"version", no_argument, NULL, 'V'}, 60 {0, no_argument, 0, 0} 61}; 62 63static void usage (FILE *, int); 64static void slurp_symtab (bfd *); 65static void find_address_in_section (bfd *, asection *, void *); 66static void find_offset_in_section (bfd *, asection *); 67static void translate_addresses (bfd *, asection *); 68 69/* Print a usage message to STREAM and exit with STATUS. */ 70 71static void 72usage (FILE *stream, int status) 73{ 74 fprintf (stream, _("Usage: %s [option(s)] [addr(s)]\n"), program_name); 75 fprintf (stream, _(" Convert addresses into line number/file name pairs.\n")); 76 fprintf (stream, _(" If no addresses are specified on the command line, they will be read from stdin\n")); 77 fprintf (stream, _(" The options are:\n\ 78 @<file> Read options from <file>\n\ 79 -b --target=<bfdname> Set the binary file format\n\ 80 -e --exe=<executable> Set the input file name (default is a.out)\n\ 81 -i --inlines Unwind inlined functions\n\ 82 -j --section=<name> Read section-relative offsets instead of addresses\n\ 83 -s --basenames Strip directory names\n\ 84 -f --functions Show function names\n\ 85 -C --demangle[=style] Demangle function names\n\ 86 -h --help Display this information\n\ 87 -v --version Display the program's version\n\ 88\n")); 89 90 list_supported_targets (program_name, stream); 91 if (REPORT_BUGS_TO[0] && status == 0) 92 fprintf (stream, _("Report bugs to %s\n"), REPORT_BUGS_TO); 93 exit (status); 94} 95 96/* Read in the symbol table. */ 97 98static void 99slurp_symtab (bfd *abfd) 100{ 101 long symcount; 102 unsigned int size; 103 104 if ((bfd_get_file_flags (abfd) & HAS_SYMS) == 0) 105 return; 106 107 symcount = bfd_read_minisymbols (abfd, FALSE, (void *) &syms, &size); 108 if (symcount == 0) 109 symcount = bfd_read_minisymbols (abfd, TRUE /* dynamic */, (void *) &syms, &size); 110 111 if (symcount < 0) 112 bfd_fatal (bfd_get_filename (abfd)); 113} 114 115/* These global variables are used to pass information between 116 translate_addresses and find_address_in_section. */ 117 118static bfd_vma pc; 119static const char *filename; 120static const char *functionname; 121static unsigned int line; 122static bfd_boolean found; 123 124/* Look for an address in a section. This is called via 125 bfd_map_over_sections. */ 126 127static void 128find_address_in_section (bfd *abfd, asection *section, 129 void *data ATTRIBUTE_UNUSED) 130{ 131 bfd_vma vma; 132 bfd_size_type size; 133 134 if (found) 135 return; 136 137 if ((bfd_get_section_flags (abfd, section) & SEC_ALLOC) == 0) 138 return; 139 140 vma = bfd_get_section_vma (abfd, section); 141 if (pc < vma) 142 return; 143 144 size = bfd_get_section_size (section); 145 if (pc >= vma + size) 146 return; 147 148 found = bfd_find_nearest_line (abfd, section, syms, pc - vma, 149 &filename, &functionname, &line); 150} 151 152/* Look for an offset in a section. This is directly called. */ 153 154static void 155find_offset_in_section (bfd *abfd, asection *section) 156{ 157 bfd_size_type size; 158 159 if (found) 160 return; 161 162 if ((bfd_get_section_flags (abfd, section) & SEC_ALLOC) == 0) 163 return; 164 165 size = bfd_get_section_size (section); 166 if (pc >= size) 167 return; 168 169 found = bfd_find_nearest_line (abfd, section, syms, pc, 170 &filename, &functionname, &line); 171} 172 173/* Read hexadecimal addresses from stdin, translate into 174 file_name:line_number and optionally function name. */ 175 176static void 177translate_addresses (bfd *abfd, asection *section) 178{ 179 int read_stdin = (naddr == 0); 180 181 for (;;) 182 { 183 if (read_stdin) 184 { 185 char addr_hex[100]; 186 187 if (fgets (addr_hex, sizeof addr_hex, stdin) == NULL) 188 break; 189 pc = bfd_scan_vma (addr_hex, NULL, 16); 190 } 191 else 192 { 193 if (naddr <= 0) 194 break; 195 --naddr; 196 pc = bfd_scan_vma (*addr++, NULL, 16); 197 } 198 199 found = FALSE; 200 if (section) 201 find_offset_in_section (abfd, section); 202 else 203 bfd_map_over_sections (abfd, find_address_in_section, NULL); 204 205 if (! found) 206 { 207 if (with_functions) 208 printf ("??\n"); 209 printf ("??:0\n"); 210 } 211 else 212 { 213 do { 214 if (with_functions) 215 { 216 const char *name; 217 char *alloc = NULL; 218 219 name = functionname; 220 if (name == NULL || *name == '\0') 221 name = "??"; 222 else if (do_demangle) 223 { 224 alloc = bfd_demangle (abfd, name, DMGL_ANSI | DMGL_PARAMS); 225 if (alloc != NULL) 226 name = alloc; 227 } 228 229 printf ("%s\n", name); 230 231 if (alloc != NULL) 232 free (alloc); 233 } 234 235 if (base_names && filename != NULL) 236 { 237 char *h; 238 239 h = strrchr (filename, '/'); 240 if (h != NULL) 241 filename = h + 1; 242 } 243 244 printf ("%s:%u\n", filename ? filename : "??", line); 245 if (!unwind_inlines) 246 found = FALSE; 247 else 248 found = bfd_find_inliner_info (abfd, &filename, &functionname, &line); 249 } while (found); 250 251 } 252 253 /* fflush() is essential for using this command as a server 254 child process that reads addresses from a pipe and responds 255 with line number information, processing one address at a 256 time. */ 257 fflush (stdout); 258 } 259} 260 261/* Process a file. Returns an exit value for main(). */ 262 263static int 264process_file (const char *file_name, const char *section_name, 265 const char *target) 266{ 267 bfd *abfd; 268 asection *section; 269 char **matching; 270 271 if (get_file_size (file_name) < 1) 272 return 1; 273 274 abfd = bfd_openr (file_name, target); 275 if (abfd == NULL) 276 bfd_fatal (file_name); 277 278 if (bfd_check_format (abfd, bfd_archive)) 279 fatal (_("%s: cannot get addresses from archive"), file_name); 280 281 if (! bfd_check_format_matches (abfd, bfd_object, &matching)) 282 { 283 bfd_nonfatal (bfd_get_filename (abfd)); 284 if (bfd_get_error () == bfd_error_file_ambiguously_recognized) 285 { 286 list_matching_formats (matching); 287 free (matching); 288 } 289 xexit (1); 290 } 291 292 if (section_name != NULL) 293 { 294 section = bfd_get_section_by_name (abfd, section_name); 295 if (section == NULL) 296 fatal (_("%s: cannot find section %s"), file_name, section_name); 297 } 298 else 299 section = NULL; 300 301 slurp_symtab (abfd); 302 303 translate_addresses (abfd, section); 304 305 if (syms != NULL) 306 { 307 free (syms); 308 syms = NULL; 309 } 310 311 bfd_close (abfd); 312 313 return 0; 314} 315 316int 317main (int argc, char **argv) 318{ 319 const char *file_name; 320 const char *section_name; 321 char *target; 322 int c; 323 324#if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES) 325 setlocale (LC_MESSAGES, ""); 326#endif 327#if defined (HAVE_SETLOCALE) 328 setlocale (LC_CTYPE, ""); 329#endif 330 bindtextdomain (PACKAGE, LOCALEDIR); 331 textdomain (PACKAGE); 332 333 program_name = *argv; 334 xmalloc_set_program_name (program_name); 335 336 expandargv (&argc, &argv); 337 338 bfd_init (); 339 set_default_bfd_target (); 340 341 file_name = NULL; 342 section_name = NULL; 343 target = NULL; 344 while ((c = getopt_long (argc, argv, "b:Ce:sfHhij:Vv", long_options, (int *) 0)) 345 != EOF) 346 { 347 switch (c) 348 { 349 case 0: 350 break; /* We've been given a long option. */ 351 case 'b': 352 target = optarg; 353 break; 354 case 'C': 355 do_demangle = TRUE; 356 if (optarg != NULL) 357 { 358 enum demangling_styles style; 359 360 style = cplus_demangle_name_to_style (optarg); 361 if (style == unknown_demangling) 362 fatal (_("unknown demangling style `%s'"), 363 optarg); 364 365 cplus_demangle_set_style (style); 366 } 367 break; 368 case 'e': 369 file_name = optarg; 370 break; 371 case 's': 372 base_names = TRUE; 373 break; 374 case 'f': 375 with_functions = TRUE; 376 break; 377 case 'v': 378 case 'V': 379 print_version ("addr2line"); 380 break; 381 case 'h': 382 case 'H': 383 usage (stdout, 0); 384 break; 385 case 'i': 386 unwind_inlines = TRUE; 387 break; 388 case 'j': 389 section_name = optarg; 390 break; 391 default: 392 usage (stderr, 1); 393 break; 394 } 395 } 396 397 if (file_name == NULL) 398 file_name = "a.out"; 399 400 addr = argv + optind; 401 naddr = argc - optind; 402 403 return process_file (file_name, section_name, target); 404} 405