bfd/coff-apollo.c

   1 /* BFD back-end for Apollo 68000 COFF binaries.
   2    Copyright 1990, 1991, 1992, 1993, 1994 Free Software Foundation, Inc.
   3    By Troy Rollo (troy@cbme.unsw.edu.au)
   4    Based on m68k standard COFF version Written by 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 #include "bfd.h"
  23 #include "sysdep.h"
  24 #include "libbfd.h"
  25 #include "obstack.h"
  26 #include "coff/apollo.h"
  27 #include "coff/internal.h"
  28 #include "libcoff.h"
  29
  30 #ifdef ONLY_DECLARE_RELOCS
  31 extern reloc_howto_type apollocoff_howto_table[];
  32 #else
  33 reloc_howto_type apollocoff_howto_table[] =
  34 {
  35   HOWTO(R_RELBYTE,             0,  0,   8,  false, 0, complain_overflow_bitfield, 0, "8",       true, 0x000000ff,0x000000ff, false),
  36   HOWTO(R_RELWORD,             0,  1,   16, false, 0, complain_overflow_bitfield, 0, "16",      true, 0x0000ffff,0x0000ffff, false),
  37   HOWTO(R_RELLONG,             0,  2,   32, false, 0, complain_overflow_bitfield, 0, "32",      true, 0xffffffff,0xffffffff, false),
  38   HOWTO(R_PCRBYTE,             0,  0,   8,  true,  0, complain_overflow_signed, 0, "DISP8",    true, 0x000000ff,0x000000ff, false),
  39   HOWTO(R_PCRWORD,             0,  1,   16, true,  0, complain_overflow_signed, 0, "DISP16",   true, 0x0000ffff,0x0000ffff, false),
  40   HOWTO(R_PCRLONG,             0,  2,   32, true,  0, complain_overflow_signed, 0, "DISP32",   true, 0xffffffff,0xffffffff, false),
  41   HOWTO(R_RELLONG_NEG,         0,  -2,  32, false, 0, complain_overflow_bitfield, 0, "-32",     true, 0xffffffff,0xffffffff, false),
  42 };
  43 #endif /* not ONLY_DECLARE_RELOCS */
  44
  45 #ifndef BADMAG
  46 #define BADMAG(x) M68KBADMAG(x)
  47 #endif
  48 #define APOLLO_M68 1            /* Customize coffcode.h */
  49
  50 /* Turn a howto into a reloc number */
  51
  52 #ifdef ONLY_DECLARE_RELOCS
  53 extern void apollo_rtype2howto PARAMS ((arelent *internal, int relocentry));
  54 extern int apollo_howto2rtype PARAMS ((CONST struct reloc_howto_struct *));
  55 #else
  56 void
  57 apollo_rtype2howto(internal, relocentry)
  58      arelent *internal;
  59      int relocentry;
  60 {
  61   switch (relocentry)
  62   {
  63    case R_RELBYTE:      internal->howto = apollocoff_howto_table + 0; break;
  64    case R_RELWORD:      internal->howto = apollocoff_howto_table + 1; break;
  65    case R_RELLONG:      internal->howto = apollocoff_howto_table + 2; break;
  66    case R_PCRBYTE:      internal->howto = apollocoff_howto_table + 3; break;
  67    case R_PCRWORD:      internal->howto = apollocoff_howto_table + 4; break;
  68    case R_PCRLONG:      internal->howto = apollocoff_howto_table + 5; break;
  69    case R_RELLONG_NEG:  internal->howto = apollocoff_howto_table + 6; break;
  70   }
  71 }
  72
  73 int
  74 apollo_howto2rtype (internal)
  75      CONST struct reloc_howto_struct *internal;
  76 {
  77   if (internal->pc_relative)
  78   {
  79     switch (internal->bitsize)
  80     {
  81      case 32: return R_PCRLONG;
  82      case 16: return R_PCRWORD;
  83      case 8: return R_PCRBYTE;
  84     }
  85   }
  86   else
  87   {
  88     switch (internal->bitsize)
  89      {
  90       case 32: return R_RELLONG;
  91       case 16: return R_RELWORD;
  92       case 8: return R_RELBYTE;
  93      }
  94   }
  95   return R_RELLONG;
  96 }
  97 #endif /* not ONLY_DECLARE_RELOCS */
  98
  99 #define RTYPE2HOWTO(internal, relocentry) \
 100   apollo_rtype2howto(internal, (relocentry)->r_type)
 101
 102 #define SELECT_RELOC(external, internal) \
 103   external.r_type = apollo_howto2rtype(internal);
 104
 105 #include "coffcode.h"
 106
 107 bfd_target
 108 #ifdef TARGET_SYM
 109   TARGET_SYM =
 110 #else
 111   apollocoff_vec =
 112 #endif
 113 {
 114 #ifdef TARGET_NAME
 115   TARGET_NAME,
 116 #else
 117   "apollo-m68k",                        /* name */
 118 #endif
 119   bfd_target_coff_flavour,
 120   true,                         /* data byte order is big */
 121   true,                         /* header byte order is big */
 122
 123   (HAS_RELOC | EXEC_P |         /* object flags */
 124    HAS_LINENO | HAS_DEBUG |
 125    HAS_SYMS | HAS_LOCALS | WP_TEXT),
 126
 127   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
 128 #ifdef NAMES_HAVE_UNDERSCORE
 129   '_',
 130 #else
 131   0,                            /* leading underscore */
 132 #endif
 133   '/',                          /* ar_pad_char */
 134   15,                           /* ar_max_namelen */
 135   3,                            /* minimum section alignment */
 136   bfd_getb64, bfd_getb_signed_64, bfd_putb64,
 137      bfd_getb32, bfd_getb_signed_32, bfd_putb32,
 138      bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* data */
 139   bfd_getb64, bfd_getb_signed_64, bfd_putb64,
 140      bfd_getb32, bfd_getb_signed_32, bfd_putb32,
 141      bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* hdrs */
 142
 143  {_bfd_dummy_target, coff_object_p, /* bfd_check_format */
 144    bfd_generic_archive_p, _bfd_dummy_target},
 145  {bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format */
 146    bfd_false},
 147  {bfd_false, coff_write_object_contents, /* bfd_write_contents */
 148    _bfd_write_archive_contents, bfd_false},
 149
 150      BFD_JUMP_TABLE_GENERIC (coff),
 151      BFD_JUMP_TABLE_COPY (coff),
 152      BFD_JUMP_TABLE_CORE (_bfd_nocore),
 153      BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
 154      BFD_JUMP_TABLE_SYMBOLS (coff),
 155      BFD_JUMP_TABLE_RELOCS (coff),
 156      BFD_JUMP_TABLE_WRITE (coff),
 157      BFD_JUMP_TABLE_LINK (coff),
 158
 159   COFF_SWAP_TABLE
 160  };