1/* addr2line.c -- convert addresses to line number and function name 2 Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003 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, 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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 <string.h> 33 34#include "bfd.h" 35#include "getopt.h" 36#include "libiberty.h" 37#include "demangle.h" 38#include "bucomm.h" 39#include "budemang.h" 40 41static bfd_boolean with_functions; /* -f, show function names. */ 42static bfd_boolean do_demangle; /* -C, demangle names. */ 43static bfd_boolean base_names; /* -s, strip directory names. */ 44 45static int naddr; /* Number of addresses to process. */ 46static char **addr; /* Hex addresses to process. */ 47 48static asymbol **syms; /* Symbol table. */ 49 50static struct option long_options[] = 51{ 52 {"basenames", no_argument, NULL, 's'}, 53 {"demangle", optional_argument, NULL, 'C'}, 54 {"exe", required_argument, NULL, 'e'}, 55 {"functions", no_argument, NULL, 'f'}, 56 {"target", required_argument, NULL, 'b'}, 57 {"help", no_argument, NULL, 'H'}, 58 {"version", no_argument, NULL, 'V'}, 59 {0, no_argument, 0, 0} 60}; 61 62static void usage (FILE *, int); 63static void slurp_symtab (bfd *); 64static void find_address_in_section (bfd *, asection *, void *); 65static void translate_addresses (bfd *); 66static void process_file (const char *, const char *); 67 68/* Print a usage message to STREAM and exit with STATUS. */ 69 70static void 71usage (FILE *stream, int status) 72{ 73 fprintf (stream, _("Usage: %s [option(s)] [addr(s)]\n"), program_name); 74 fprintf (stream, _(" Convert addresses into line number/file name pairs.\n")); 75 fprintf (stream, _(" If no addresses are specified on the command line, they will be read from stdin\n")); 76 fprintf (stream, _(" The options are:\n\ 77 -b --target=<bfdname> Set the binary file format\n\ 78 -e --exe=<executable> Set the input file name (default is a.out)\n\ 79 -s --basenames Strip directory names\n\ 80 -f --functions Show function names\n\ 81 -C --demangle[=style] Demangle function names\n\ 82 -h --help Display this information\n\ 83 -v --version Display the program's version\n\ 84\n")); 85 86 list_supported_targets (program_name, stream); 87 if (status == 0) 88 fprintf (stream, _("Report bugs to %s\n"), REPORT_BUGS_TO); 89 exit (status); 90} 91 92/* Read in the symbol table. */ 93 94static void 95slurp_symtab (bfd *abfd) 96{ 97 long symcount; 98 unsigned int size; 99 100 if ((bfd_get_file_flags (abfd) & HAS_SYMS) == 0) 101 return; 102 103 symcount = bfd_read_minisymbols (abfd, FALSE, (void *) &syms, &size); 104 if (symcount == 0) 105 symcount = bfd_read_minisymbols (abfd, TRUE /* dynamic */, (void *) &syms, &size); 106 107 if (symcount < 0) 108 bfd_fatal (bfd_get_filename (abfd)); 109} 110 111/* These global variables are used to pass information between 112 translate_addresses and find_address_in_section. */ 113 114static bfd_vma pc; 115static const char *filename; 116static const char *functionname; 117static unsigned int line; 118static bfd_boolean found; 119 120/* Look for an address in a section. This is called via 121 bfd_map_over_sections. */ 122 123static void 124find_address_in_section (bfd *abfd, asection *section, 125 void *data ATTRIBUTE_UNUSED) 126{ 127 bfd_vma vma; 128 bfd_size_type size; 129 130 if (found) 131 return; 132 133 if ((bfd_get_section_flags (abfd, section) & SEC_ALLOC) == 0) 134 return; 135 136 vma = bfd_get_section_vma (abfd, section); 137 if (pc < vma) 138 return; 139 140 size = bfd_get_section_size_before_reloc (section); 141 if (pc >= vma + size) 142 return; 143 144 found = bfd_find_nearest_line (abfd, section, syms, pc - vma, 145 &filename, &functionname, &line); 146} 147 148/* Read hexadecimal addresses from stdin, translate into 149 file_name:line_number and optionally function name. */ 150 151static void 152translate_addresses (bfd *abfd) 153{ 154 int read_stdin = (naddr == 0); 155 156 for (;;) 157 { 158 if (read_stdin) 159 { 160 char addr_hex[100]; 161 162 if (fgets (addr_hex, sizeof addr_hex, stdin) == NULL) 163 break; 164 pc = bfd_scan_vma (addr_hex, NULL, 16); 165 } 166 else 167 { 168 if (naddr <= 0) 169 break; 170 --naddr; 171 pc = bfd_scan_vma (*addr++, NULL, 16); 172 } 173 174 found = FALSE; 175 bfd_map_over_sections (abfd, find_address_in_section, NULL); 176 177 if (! found) 178 { 179 if (with_functions) 180 printf ("??\n"); 181 printf ("??:0\n"); 182 } 183 else 184 { 185 if (with_functions) 186 { 187 const char *name; 188 char *alloc = NULL; 189 190 name = functionname; 191 if (name == NULL || *name == '\0') 192 name = "??"; 193 else if (do_demangle) 194 { 195 alloc = demangle (abfd, name); 196 name = alloc; 197 } 198 199 printf ("%s\n", name); 200 201 if (alloc != NULL) 202 free (alloc); 203 } 204 205 if (base_names && filename != NULL) 206 { 207 char *h; 208 209 h = strrchr (filename, '/'); 210 if (h != NULL) 211 filename = h + 1; 212 } 213 214 printf ("%s:%u\n", filename ? filename : "??", line); 215 } 216 217 /* fflush() is essential for using this command as a server 218 child process that reads addresses from a pipe and responds 219 with line number information, processing one address at a 220 time. */ 221 fflush (stdout); 222 } 223} 224 225/* Process a file. */ 226 227static void 228process_file (const char *file_name, const char *target) 229{ 230 bfd *abfd; 231 char **matching; 232 233 if (get_file_size (file_name) < 1) 234 return; 235 236 abfd = bfd_openr (file_name, target); 237 if (abfd == NULL) 238 bfd_fatal (file_name); 239 240 if (bfd_check_format (abfd, bfd_archive)) 241 fatal (_("%s: can not get addresses from archive"), file_name); 242 243 if (! bfd_check_format_matches (abfd, bfd_object, &matching)) 244 { 245 bfd_nonfatal (bfd_get_filename (abfd)); 246 if (bfd_get_error () == bfd_error_file_ambiguously_recognized) 247 { 248 list_matching_formats (matching); 249 free (matching); 250 } 251 xexit (1); 252 } 253 254 slurp_symtab (abfd); 255 256 translate_addresses (abfd); 257 258 if (syms != NULL) 259 { 260 free (syms); 261 syms = NULL; 262 } 263 264 bfd_close (abfd); 265} 266 267int main (int, char **); 268 269int 270main (int argc, char **argv) 271{ 272 const char *file_name; 273 char *target; 274 int c; 275 276#if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES) 277 setlocale (LC_MESSAGES, ""); 278#endif 279#if defined (HAVE_SETLOCALE) 280 setlocale (LC_CTYPE, ""); 281#endif 282 bindtextdomain (PACKAGE, LOCALEDIR); 283 textdomain (PACKAGE); 284 285 program_name = *argv; 286 xmalloc_set_program_name (program_name); 287 288 expandargv (&argc, &argv); 289 290 bfd_init (); 291 set_default_bfd_target (); 292 293 file_name = NULL; 294 target = NULL; 295 while ((c = getopt_long (argc, argv, "b:Ce:sfHhVv", long_options, (int *) 0)) 296 != EOF) 297 { 298 switch (c) 299 { 300 case 0: 301 break; /* We've been given a long option. */ 302 case 'b': 303 target = optarg; 304 break; 305 case 'C': 306 do_demangle = TRUE; 307 if (optarg != NULL) 308 { 309 enum demangling_styles style; 310 311 style = cplus_demangle_name_to_style (optarg); 312 if (style == unknown_demangling) 313 fatal (_("unknown demangling style `%s'"), 314 optarg); 315 316 cplus_demangle_set_style (style); 317 } 318 break; 319 case 'e': 320 file_name = optarg; 321 break; 322 case 's': 323 base_names = TRUE; 324 break; 325 case 'f': 326 with_functions = TRUE; 327 break; 328 case 'v': 329 case 'V': 330 print_version ("addr2line"); 331 break; 332 case 'h': 333 case 'H': 334 usage (stdout, 0); 335 break; 336 default: 337 usage (stderr, 1); 338 break; 339 } 340 } 341 342 if (file_name == NULL) 343 file_name = "a.out"; 344 345 addr = argv + optind; 346 naddr = argc - optind; 347 348 process_file (file_name, target); 349 350 return 0; 351} 352