bfd/netbsd-core.c

   1 /* BFD back end for NetBSD style core files
   2    Copyright 1988, 1989, 1991, 1992, 1993, 1996, 1998, 1999, 2000, 2001,
   3    2002, 2003, 2004
   4    Free Software Foundation, Inc.
   5    Written by Paul Kranenburg, EUR
   6
   7    This file is part of BFD, the Binary File Descriptor library.
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 2 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program; if not, write to the Free Software
  21    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  22
  23 #include "bfd.h"
  24 #include "sysdep.h"
  25 #include "libbfd.h"
  26 #include "libaout.h"           /* BFD a.out internal data structures.  */
  27
  28 #include <sys/param.h>
  29 #include <sys/dir.h>
  30 #include <signal.h>
  31 #include <sys/core.h>
  32
  33 /* The machine ID for OpenBSD/sparc64 and older versions of
  34    NetBSD/sparc64 overlaps with M_MIPS1.  */
  35 #define M_SPARC64_OPENBSD       M_MIPS1
  36
  37 struct netbsd_core_struct
  38 {
  39   struct core core;
  40 } *rawptr;
  41
  42 /* Forward declarations.  */
  43
  44 static const bfd_target *netbsd_core_file_p
  45   PARAMS ((bfd *abfd));
  46 static char *netbsd_core_file_failing_command
  47   PARAMS ((bfd *abfd));
  48 static int netbsd_core_file_failing_signal
  49   PARAMS ((bfd *abfd));
  50 static bfd_boolean netbsd_core_file_matches_executable_p
  51   PARAMS ((bfd *core_bfd, bfd *exec_bfd));
  52 static void swap_abort
  53   PARAMS ((void));
  54
  55 /* Handle NetBSD-style core dump file.  */
  56
  57 static const bfd_target *
  58 netbsd_core_file_p (abfd)
  59      bfd *abfd;
  60
  61 {
  62   int i, val;
  63   file_ptr offset;
  64   asection *asect;
  65   struct core core;
  66   struct coreseg coreseg;
  67   bfd_size_type amt = sizeof core;
  68
  69   val = bfd_bread ((void *) &core, amt, abfd);
  70   if (val != sizeof core)
  71     {
  72       /* Too small to be a core file.  */
  73       bfd_set_error (bfd_error_wrong_format);
  74       return 0;
  75     }
  76
  77   if (CORE_GETMAGIC (core) != COREMAGIC)
  78     {
  79       bfd_set_error (bfd_error_wrong_format);
  80       return 0;
  81     }
  82
  83   amt = sizeof (struct netbsd_core_struct);
  84   rawptr = (struct netbsd_core_struct *) bfd_zalloc (abfd, amt);
  85   if (rawptr == NULL)
  86     return 0;
  87
  88   rawptr->core = core;
  89   abfd->tdata.netbsd_core_data = rawptr;
  90
  91   offset = core.c_hdrsize;
  92   for (i = 0; i < core.c_nseg; i++)
  93     {
  94       const char *sname;
  95       flagword flags;
  96
  97       if (bfd_seek (abfd, offset, SEEK_SET) != 0)
  98         goto punt;
  99
 100       val = bfd_bread ((void *) &coreseg, (bfd_size_type) sizeof coreseg, abfd);
 101       if (val != sizeof coreseg)
 102         {
 103           bfd_set_error (bfd_error_file_truncated);
 104           goto punt;
 105         }
 106       if (CORE_GETMAGIC (coreseg) != CORESEGMAGIC)
 107         {
 108           bfd_set_error (bfd_error_wrong_format);
 109           goto punt;
 110         }
 111
 112       offset += core.c_seghdrsize;
 113
 114       switch (CORE_GETFLAG (coreseg))
 115         {
 116         case CORE_CPU:
 117           sname = ".reg";
 118           flags = SEC_ALLOC + SEC_HAS_CONTENTS;
 119           break;
 120         case CORE_DATA:
 121           sname = ".data";
 122           flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS;
 123           break;
 124         case CORE_STACK:
 125           sname = ".stack";
 126           flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS;
 127           break;
 128         default:
 129           sname = ".unknown";
 130           flags = SEC_ALLOC + SEC_HAS_CONTENTS;
 131           break;
 132         }
 133       asect = bfd_make_section_anyway (abfd, sname);
 134       if (asect == NULL)
 135         goto punt;
 136
 137       asect->flags = flags;
 138       asect->_raw_size = coreseg.c_size;
 139       asect->vma = coreseg.c_addr;
 140       asect->filepos = offset;
 141       asect->alignment_power = 2;
 142
 143       offset += coreseg.c_size;
 144     }
 145
 146  /* Set architecture from machine ID.  */
 147  switch (CORE_GETMID (core))
 148    {
 149    case M_X86_64_NETBSD:
 150      bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x86_64);
 151      break;
 152
 153    case M_386_NETBSD:
 154      bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_i386_i386);
 155      break;
 156
 157    case M_SPARC_NETBSD:
 158      bfd_default_set_arch_mach (abfd, bfd_arch_sparc, bfd_mach_sparc);
 159      break;
 160
 161    case M_SPARC64_NETBSD:
 162    case M_SPARC64_OPENBSD:
 163      bfd_default_set_arch_mach (abfd, bfd_arch_sparc, bfd_mach_sparc_v9);
 164      break;
 165    }
 166
 167   /* OK, we believe you.  You're a core file (sure, sure).  */
 168   return abfd->xvec;
 169
 170  punt:
 171   bfd_release (abfd, abfd->tdata.any);
 172   abfd->tdata.any = NULL;
 173   bfd_section_list_clear (abfd);
 174   return 0;
 175 }
 176
 177 static char*
 178 netbsd_core_file_failing_command (abfd)
 179         bfd *abfd;
 180 {
 181  /*return core_command (abfd);*/
 182   return abfd->tdata.netbsd_core_data->core.c_name;
 183 }
 184
 185 static int
 186 netbsd_core_file_failing_signal (abfd)
 187         bfd *abfd;
 188 {
 189   /*return core_signal (abfd);*/
 190   return abfd->tdata.netbsd_core_data->core.c_signo;
 191 }
 192
 193 static bfd_boolean
 194 netbsd_core_file_matches_executable_p  (core_bfd, exec_bfd)
 195      bfd *core_bfd ATTRIBUTE_UNUSED;
 196      bfd *exec_bfd ATTRIBUTE_UNUSED;
 197 {
 198   /* FIXME, We have no way of telling at this point.  */
 199   return TRUE;
 200 }
 201 \f
 202 /* If somebody calls any byte-swapping routines, shoot them.  */
 203
 204 static void
 205 swap_abort ()
 206 {
 207  /* This way doesn't require any declaration for ANSI to fuck up.  */
 208   abort ();
 209 }
 210
 211 #define NO_GET ((bfd_vma (*) (const void *)) swap_abort)
 212 #define NO_PUT ((void (*) (bfd_vma, void *)) swap_abort)
 213 #define NO_GETS ((bfd_signed_vma (*) (const void *)) swap_abort)
 214 #define NO_GET64 ((bfd_uint64_t (*) (const void *)) swap_abort)
 215 #define NO_PUT64 ((void (*) (bfd_uint64_t, void *)) swap_abort)
 216 #define NO_GETS64 ((bfd_int64_t (*) (const void *)) swap_abort)
 217
 218 const bfd_target netbsd_core_vec =
 219   {
 220     "netbsd-core",
 221     bfd_target_unknown_flavour,
 222     BFD_ENDIAN_UNKNOWN,         /* Target byte order.  */
 223     BFD_ENDIAN_UNKNOWN,         /* Target headers byte order.  */
 224     (HAS_RELOC | EXEC_P |       /* Object flags.  */
 225      HAS_LINENO | HAS_DEBUG |
 226      HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
 227     (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* Section flags.  */
 228     0,                                                     /* Symbol prefix.  */
 229     ' ',                                                   /* ar_pad_char.  */
 230     16,                                                    /* ar_max_namelen.  */
 231     NO_GET64, NO_GETS64, NO_PUT64,      /* 64 bit data.  */
 232     NO_GET, NO_GETS, NO_PUT,            /* 32 bit data.  */
 233     NO_GET, NO_GETS, NO_PUT,            /* 16 bit data.  */
 234     NO_GET64, NO_GETS64, NO_PUT64,      /* 64 bit hdrs.  */
 235     NO_GET, NO_GETS, NO_PUT,            /* 32 bit hdrs.  */
 236     NO_GET, NO_GETS, NO_PUT,            /* 16 bit hdrs.  */
 237
 238     {                                   /* bfd_check_format.  */
 239       _bfd_dummy_target,                /* Unknown format.  */
 240       _bfd_dummy_target,                /* Object file.  */
 241       _bfd_dummy_target,                /* Archive.  */
 242       netbsd_core_file_p                /* A core file.  */
 243     },
 244     {                                   /* bfd_set_format.  */
 245       bfd_false, bfd_false,
 246       bfd_false, bfd_false
 247     },
 248     {                                   /* bfd_write_contents.  */
 249       bfd_false, bfd_false,
 250       bfd_false, bfd_false
 251     },
 252
 253     BFD_JUMP_TABLE_GENERIC (_bfd_generic),
 254     BFD_JUMP_TABLE_COPY (_bfd_generic),
 255     BFD_JUMP_TABLE_CORE (netbsd),
 256     BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
 257     BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols),
 258     BFD_JUMP_TABLE_RELOCS (_bfd_norelocs),
 259     BFD_JUMP_TABLE_WRITE (_bfd_generic),
 260     BFD_JUMP_TABLE_LINK (_bfd_nolink),
 261     BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
 262
 263     NULL,
 264
 265     (PTR) 0                             /* Backend_data.  */
 266   };