bfd/irix-core.c

   1 /* BFD back-end for Irix core files.
   2    Copyright 1993 Free Software Foundation, Inc.
   3    Written by Stu Grossman, Cygnus Support.
   4    Converted to back-end form by Ian Lance Taylor, Cygnus Support
   5
   6 This file is part of BFD, the Binary File Descriptor library.
   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 of the License, or
  11 (at your option) 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, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
  21
  22 /* This file can only be compiled on systems which use Irix style core
  23    files (namely, Irix 4 and Irix 5, so far).  In the config/XXXXXX.mh
  24    file for such a system add
  25       HDEFINES=-DIRIX_CORE
  26       HDEPFILES=irix-core.o
  27    */
  28
  29 #include "bfd.h"
  30 #include "sysdep.h"
  31 #include "libbfd.h"
  32
  33 #ifdef IRIX_CORE
  34
  35 #include <core.out.h>
  36
  37 struct sgi_core_struct
  38 {
  39   int sig;
  40   char cmd[CORE_NAMESIZE];
  41 };
  42
  43 #define core_hdr(bfd) ((bfd)->tdata.sgi_core_data)
  44 #define core_signal(bfd) (core_hdr(bfd)->sig)
  45 #define core_command(bfd) (core_hdr(bfd)->cmd)
  46
  47 static asection *
  48 make_bfd_asection (abfd, name, flags, _raw_size, vma, filepos)
  49      bfd *abfd;
  50      CONST char *name;
  51      flagword flags;
  52      bfd_size_type _raw_size;
  53      bfd_vma vma;
  54      file_ptr filepos;
  55 {
  56   asection *asect;
  57
  58   asect = bfd_make_section_anyway (abfd, name);
  59   if (!asect)
  60     return NULL;
  61
  62   asect->flags = flags;
  63   asect->_raw_size = _raw_size;
  64   asect->vma = vma;
  65   asect->filepos = filepos;
  66   asect->alignment_power = 4;
  67
  68   return asect;
  69 }
  70
  71 static bfd_target *
  72 irix_core_core_file_p (abfd)
  73      bfd *abfd;
  74 {
  75   int val;
  76   int i;
  77   char *secname;
  78   struct coreout coreout;
  79   struct idesc *idg, *idf, *ids;
  80
  81   val = bfd_read ((PTR)&coreout, 1, sizeof coreout, abfd);
  82   if (val != sizeof coreout)
  83     {
  84       if (bfd_get_error () != bfd_error_system_call)
  85         bfd_set_error (bfd_error_wrong_format);
  86       return 0;
  87     }
  88
  89   if (coreout.c_magic != CORE_MAGIC
  90       || coreout.c_version != CORE_VERSION1)
  91     return 0;
  92
  93   core_hdr (abfd) = (struct sgi_core_struct *) bfd_zalloc (abfd, sizeof (struct sgi_core_struct));
  94   if (!core_hdr (abfd))
  95     return NULL;
  96
  97   strncpy (core_command (abfd), coreout.c_name, CORE_NAMESIZE);
  98   core_signal (abfd) = coreout.c_sigcause;
  99
 100   if (bfd_seek (abfd, coreout.c_vmapoffset, SEEK_SET) != 0)
 101     return NULL;
 102
 103   for (i = 0; i < coreout.c_nvmap; i++)
 104     {
 105       struct vmap vmap;
 106
 107       val = bfd_read ((PTR)&vmap, 1, sizeof vmap, abfd);
 108       if (val != sizeof vmap)
 109         break;
 110
 111       switch (vmap.v_type)
 112         {
 113         case VDATA:
 114           secname = ".data";
 115           break;
 116         case VSTACK:
 117           secname = ".stack";
 118           break;
 119 #ifdef VMAPFILE
 120         case VMAPFILE:
 121           secname = ".mapfile";
 122           break;
 123 #endif
 124         default:
 125           continue;
 126         }
 127
 128       if (!make_bfd_asection (abfd, secname,
 129                               SEC_ALLOC+SEC_LOAD+SEC_HAS_CONTENTS,
 130                               vmap.v_len,
 131                               vmap.v_vaddr,
 132                               vmap.v_offset,
 133                               2))
 134         return NULL;
 135     }
 136
 137   /* Make sure that the regs are contiguous within the core file. */
 138
 139   idg = &coreout.c_idesc[I_GPREGS];
 140   idf = &coreout.c_idesc[I_FPREGS];
 141   ids = &coreout.c_idesc[I_SPECREGS];
 142
 143   if (idg->i_offset + idg->i_len != idf->i_offset
 144       || idf->i_offset + idf->i_len != ids->i_offset)
 145     return 0;                   /* Can't deal with non-contig regs */
 146
 147   if (bfd_seek (abfd, idg->i_offset, SEEK_SET) != 0)
 148     return NULL;
 149
 150   make_bfd_asection (abfd, ".reg",
 151                      SEC_ALLOC+SEC_HAS_CONTENTS,
 152                      idg->i_len + idf->i_len + ids->i_len,
 153                      0,
 154                      idg->i_offset);
 155
 156   /* OK, we believe you.  You're a core file (sure, sure).  */
 157
 158   return abfd->xvec;
 159 }
 160
 161 static char *
 162 irix_core_core_file_failing_command (abfd)
 163      bfd *abfd;
 164 {
 165   return core_command (abfd);
 166 }
 167
 168 static int
 169 irix_core_core_file_failing_signal (abfd)
 170      bfd *abfd;
 171 {
 172   return core_signal (abfd);
 173 }
 174
 175 static boolean
 176 irix_core_core_file_matches_executable_p (core_bfd, exec_bfd)
 177      bfd *core_bfd, *exec_bfd;
 178 {
 179   return true;                  /* XXX - FIXME */
 180 }
 181
 182 static asymbol *
 183 irix_core_make_empty_symbol (abfd)
 184      bfd *abfd;
 185 {
 186   asymbol *new = (asymbol *) bfd_zalloc (abfd, sizeof (asymbol));
 187   if (new)
 188     new->the_bfd = abfd;
 189   return new;
 190 }
 191
 192 #define irix_core_get_symtab_upper_bound _bfd_nosymbols_get_symtab_upper_bound
 193 #define irix_core_get_symtab _bfd_nosymbols_get_symtab
 194 #define irix_core_print_symbol _bfd_nosymbols_print_symbol
 195 #define irix_core_get_symbol_info _bfd_nosymbols_get_symbol_info
 196 #define irix_core_bfd_is_local_label _bfd_nosymbols_bfd_is_local_label
 197 #define irix_core_get_lineno _bfd_nosymbols_get_lineno
 198 #define irix_core_find_nearest_line _bfd_nosymbols_find_nearest_line
 199 #define irix_core_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol
 200
 201 /* If somebody calls any byte-swapping routines, shoot them.  */
 202 void
 203 swap_abort()
 204 {
 205   abort(); /* This way doesn't require any declaration for ANSI to fuck up */
 206 }
 207 #define NO_GET  ((bfd_vma (*) PARAMS ((   const bfd_byte *))) swap_abort )
 208 #define NO_PUT  ((void    (*) PARAMS ((bfd_vma, bfd_byte *))) swap_abort )
 209 #define NO_SIGNED_GET \
 210   ((bfd_signed_vma (*) PARAMS ((const bfd_byte *))) swap_abort )
 211
 212 bfd_target irix_core_vec =
 213   {
 214     "irix-core",
 215     bfd_target_unknown_flavour,
 216     true,                       /* target byte order */
 217     true,                       /* target headers byte order */
 218     (HAS_RELOC | EXEC_P |       /* object flags */
 219      HAS_LINENO | HAS_DEBUG |
 220      HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
 221     (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
 222     0,                                                     /* symbol prefix */
 223     ' ',                                                   /* ar_pad_char */
 224     16,                                                    /* ar_max_namelen */
 225     3,                                                     /* minimum alignment power */
 226     NO_GET, NO_SIGNED_GET, NO_PUT,      /* 64 bit data */
 227     NO_GET, NO_SIGNED_GET, NO_PUT,      /* 32 bit data */
 228     NO_GET, NO_SIGNED_GET, NO_PUT,      /* 16 bit data */
 229     NO_GET, NO_SIGNED_GET, NO_PUT,      /* 64 bit hdrs */
 230     NO_GET, NO_SIGNED_GET, NO_PUT,      /* 32 bit hdrs */
 231     NO_GET, NO_SIGNED_GET, NO_PUT,      /* 16 bit hdrs */
 232
 233     {                           /* bfd_check_format */
 234      _bfd_dummy_target,         /* unknown format */
 235      _bfd_dummy_target,         /* object file */
 236      _bfd_dummy_target,         /* archive */
 237      irix_core_core_file_p      /* a core file */
 238     },
 239     {                           /* bfd_set_format */
 240      bfd_false, bfd_false,
 241      bfd_false, bfd_false
 242     },
 243     {                           /* bfd_write_contents */
 244      bfd_false, bfd_false,
 245      bfd_false, bfd_false
 246     },
 247
 248        BFD_JUMP_TABLE_GENERIC (_bfd_generic),
 249        BFD_JUMP_TABLE_COPY (_bfd_generic),
 250        BFD_JUMP_TABLE_CORE (irix_core),
 251        BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
 252        BFD_JUMP_TABLE_SYMBOLS (irix_core),
 253        BFD_JUMP_TABLE_RELOCS (_bfd_norelocs),
 254        BFD_JUMP_TABLE_WRITE (_bfd_generic),
 255        BFD_JUMP_TABLE_LINK (_bfd_nolink),
 256
 257     (PTR) 0                     /* backend_data */
 258 };
 259
 260 #endif /* IRIX_CORE */