binutils/addr2line.c

   1 /* addr2line.c -- convert addresses to line number and function name
   2    Copyright 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
   3    Contributed by Ulrich Lauther <Ulrich.Lauther@mchp.siemens.de>
   4
   5    This file is part of GNU Binutils.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2, or (at your option)
  10    any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  20
  21 /* Derived from objdump.c and nm.c by Ulrich.Lauther@mchp.siemens.de
  22
  23    Usage:
  24    addr2line [options] addr addr ...
  25    or
  26    addr2line [options]
  27
  28    both forms write results to stdout, the second form reads addresses
  29    to be converted from stdin.  */
  30
  31 #include <string.h>
  32
  33 #include "bfd.h"
  34 #include "getopt.h"
  35 #include "libiberty.h"
  36 #include "demangle.h"
  37 #include "bucomm.h"
  38
  39 extern char *program_version;
  40
  41 static boolean with_functions;  /* -f, show function names.  */
  42 static boolean do_demangle;     /* -C, demangle names.  */
  43 static boolean base_names;      /* -s, strip directory names.  */
  44
  45 static int naddr;               /* Number of addresses to process.  */
  46 static char **addr;             /* Hex addresses to process.  */
  47
  48 static asymbol **syms;          /* Symbol table.  */
  49
  50 static 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
  62 static void usage PARAMS ((FILE *, int));
  63 static void slurp_symtab PARAMS ((bfd *));
  64 static void find_address_in_section PARAMS ((bfd *, asection *, PTR));
  65 static void translate_addresses PARAMS ((bfd *));
  66 static void process_file PARAMS ((const char *, const char *));
  67 \f
  68 /* Print a usage message to STREAM and exit with STATUS.  */
  69
  70 static void
  71 usage (stream, status)
  72      FILE *stream;
  73      int status;
  74 {
  75   fprintf (stream, _("\
  76 Usage: %s [-CfsHV] [-b bfdname] [--target=bfdname]\n\
  77        [-e executable] [--exe=executable] [--demangle[=style]]\n\
  78        [--basenames] [--functions] [addr addr ...]\n"),
  79            program_name);
  80   list_supported_targets (program_name, stream);
  81   if (status == 0)
  82     fprintf (stream, _("Report bugs to %s\n"), REPORT_BUGS_TO);
  83   exit (status);
  84 }
  85 \f
  86 /* Read in the symbol table.  */
  87
  88 static void
  89 slurp_symtab (abfd)
  90      bfd *abfd;
  91 {
  92   long storage;
  93   long symcount;
  94
  95   if ((bfd_get_file_flags (abfd) & HAS_SYMS) == 0)
  96     return;
  97
  98   storage = bfd_get_symtab_upper_bound (abfd);
  99   if (storage < 0)
 100     bfd_fatal (bfd_get_filename (abfd));
 101
 102   syms = (asymbol **) xmalloc (storage);
 103
 104   symcount = bfd_canonicalize_symtab (abfd, syms);
 105   if (symcount < 0)
 106     bfd_fatal (bfd_get_filename (abfd));
 107 }
 108 \f
 109 /* These global variables are used to pass information between
 110    translate_addresses and find_address_in_section.  */
 111
 112 static bfd_vma pc;
 113 static const char *filename;
 114 static const char *functionname;
 115 static unsigned int line;
 116 static boolean found;
 117
 118 /* Look for an address in a section.  This is called via
 119    bfd_map_over_sections.  */
 120
 121 static void
 122 find_address_in_section (abfd, section, data)
 123      bfd *abfd;
 124      asection *section;
 125      PTR 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
 151 static void
 152 translate_addresses (abfd)
 153      bfd *abfd;
 154 {
 155   int read_stdin = (naddr == 0);
 156
 157   for (;;)
 158     {
 159       if (read_stdin)
 160         {
 161           char addr_hex[100];
 162
 163           if (fgets (addr_hex, sizeof addr_hex, stdin) == NULL)
 164             break;
 165           pc = bfd_scan_vma (addr_hex, NULL, 16);
 166         }
 167       else
 168         {
 169           if (naddr <= 0)
 170             break;
 171           --naddr;
 172           pc = bfd_scan_vma (*addr++, NULL, 16);
 173         }
 174
 175       found = false;
 176       bfd_map_over_sections (abfd, find_address_in_section, (PTR) NULL);
 177
 178       if (! found)
 179         {
 180           if (with_functions)
 181             printf ("??\n");
 182           printf ("??:0\n");
 183         }
 184       else
 185         {
 186           if (with_functions)
 187             {
 188               if (functionname == NULL || *functionname == '\0')
 189                 printf ("??\n");
 190               else if (! do_demangle)
 191                 printf ("%s\n", functionname);
 192               else
 193                 {
 194                   char *res;
 195
 196                   res = cplus_demangle (functionname, DMGL_ANSI | DMGL_PARAMS);
 197                   if (res == NULL)
 198                     printf ("%s\n", functionname);
 199                   else
 200                     {
 201                       printf ("%s\n", res);
 202                       free (res);
 203                     }
 204                 }
 205             }
 206
 207           if (base_names && filename != NULL)
 208             {
 209               char *h;
 210
 211               h = strrchr (filename, '/');
 212               if (h != NULL)
 213                 filename = h + 1;
 214             }
 215
 216           printf ("%s:%u\n", filename ? filename : "??", line);
 217         }
 218
 219       /* fflush() is essential for using this command as a server
 220          child process that reads addresses from a pipe and responds
 221          with line number information, processing one address at a
 222          time.  */
 223       fflush (stdout);
 224     }
 225 }
 226
 227 /* Process a file.  */
 228
 229 static void
 230 process_file (filename, target)
 231      const char *filename;
 232      const char *target;
 233 {
 234   bfd *abfd;
 235   char **matching;
 236
 237   abfd = bfd_openr (filename, target);
 238   if (abfd == NULL)
 239     bfd_fatal (filename);
 240
 241   if (bfd_check_format (abfd, bfd_archive))
 242     fatal (_("%s: can not get addresses from archive"), filename);
 243
 244   if (! bfd_check_format_matches (abfd, bfd_object, &matching))
 245     {
 246       bfd_nonfatal (bfd_get_filename (abfd));
 247       if (bfd_get_error () == bfd_error_file_ambiguously_recognized)
 248         {
 249           list_matching_formats (matching);
 250           free (matching);
 251         }
 252       xexit (1);
 253     }
 254
 255   slurp_symtab (abfd);
 256
 257   translate_addresses (abfd);
 258
 259   if (syms != NULL)
 260     {
 261       free (syms);
 262       syms = NULL;
 263     }
 264
 265   bfd_close (abfd);
 266 }
 267 \f
 268 int
 269 main (argc, argv)
 270      int argc;
 271      char **argv;
 272 {
 273   const char *filename;
 274   char *target;
 275   int c;
 276
 277 #if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES)
 278   setlocale (LC_MESSAGES, "");
 279 #endif
 280 #if defined (HAVE_SETLOCALE)
 281   setlocale (LC_CTYPE, "");
 282 #endif
 283   bindtextdomain (PACKAGE, LOCALEDIR);
 284   textdomain (PACKAGE);
 285
 286   program_name = *argv;
 287   xmalloc_set_program_name (program_name);
 288
 289   bfd_init ();
 290   set_default_bfd_target ();
 291
 292   filename = NULL;
 293   target = NULL;
 294   while ((c = getopt_long (argc, argv, "b:Ce:sfHV", long_options, (int *) 0))
 295          != EOF)
 296     {
 297       switch (c)
 298         {
 299         case 0:
 300           break;                /* we've been given a long option */
 301         case 'b':
 302           target = optarg;
 303           break;
 304         case 'C':
 305           do_demangle = true;
 306           if (optarg != NULL)
 307             {
 308               enum demangling_styles style;
 309
 310               style = cplus_demangle_name_to_style (optarg);
 311               if (style == unknown_demangling)
 312                 fatal (_("unknown demangling style `%s'"),
 313                        optarg);
 314
 315               cplus_demangle_set_style (style);
 316            }
 317           break;
 318         case 'e':
 319           filename = optarg;
 320           break;
 321         case 's':
 322           base_names = true;
 323           break;
 324         case 'f':
 325           with_functions = true;
 326           break;
 327         case 'V':
 328           print_version ("addr2line");
 329           break;
 330         case 'H':
 331           usage (stdout, 0);
 332           break;
 333         default:
 334           usage (stderr, 1);
 335           break;
 336         }
 337     }
 338
 339   if (filename == NULL)
 340     filename = "a.out";
 341
 342   addr = argv + optind;
 343   naddr = argc - optind;
 344
 345   process_file (filename, target);
 346
 347   return 0;
 348 }