bfd/coff-apollo.c

   1 /* BFD back-end for Apollo 68000 COFF binaries.
   2    Copyright 1990, 91, 92, 93, 94, 95, 1997 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  21
  22 #include "bfd.h"
  23 #include "sysdep.h"
  24 #include "libbfd.h"
  25 #include "coff/apollo.h"
  26 #include "coff/internal.h"
  27 #include "libcoff.h"
  28
  29 #define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (3)
  30
  31 #ifdef ONLY_DECLARE_RELOCS
  32 extern reloc_howto_type apollocoff_howto_table[];
  33 #else
  34 reloc_howto_type apollocoff_howto_table[] =
  35 {
  36   HOWTO(R_RELBYTE,             0,  0,   8,  false, 0, complain_overflow_bitfield, 0, "8",       true, 0x000000ff,0x000000ff, false),
  37   HOWTO(R_RELWORD,             0,  1,   16, false, 0, complain_overflow_bitfield, 0, "16",      true, 0x0000ffff,0x0000ffff, false),
  38   HOWTO(R_RELLONG,             0,  2,   32, false, 0, complain_overflow_bitfield, 0, "32",      true, 0xffffffff,0xffffffff, false),
  39   HOWTO(R_PCRBYTE,             0,  0,   8,  true,  0, complain_overflow_signed, 0, "DISP8",    true, 0x000000ff,0x000000ff, false),
  40   HOWTO(R_PCRWORD,             0,  1,   16, true,  0, complain_overflow_signed, 0, "DISP16",   true, 0x0000ffff,0x0000ffff, false),
  41   HOWTO(R_PCRLONG,             0,  2,   32, true,  0, complain_overflow_signed, 0, "DISP32",   true, 0xffffffff,0xffffffff, false),
  42   HOWTO(R_RELLONG_NEG,         0,  -2,  32, false, 0, complain_overflow_bitfield, 0, "-32",     true, 0xffffffff,0xffffffff, false),
  43 };
  44 #endif /* not ONLY_DECLARE_RELOCS */
  45
  46 #ifndef BADMAG
  47 #define BADMAG(x) M68KBADMAG(x)
  48 #endif
  49 #define APOLLO_M68 1            /* Customize coffcode.h */
  50
  51 /* Turn a howto into a reloc number */
  52
  53 #ifdef ONLY_DECLARE_RELOCS
  54 extern void apollo_rtype2howto PARAMS ((arelent *internal, int relocentry));
  55 extern int apollo_howto2rtype PARAMS ((reloc_howto_type *));
  56 #else
  57 void
  58 apollo_rtype2howto(internal, relocentry)
  59      arelent *internal;
  60      int relocentry;
  61 {
  62   switch (relocentry)
  63   {
  64    case R_RELBYTE:      internal->howto = apollocoff_howto_table + 0; break;
  65    case R_RELWORD:      internal->howto = apollocoff_howto_table + 1; break;
  66    case R_RELLONG:      internal->howto = apollocoff_howto_table + 2; break;
  67    case R_PCRBYTE:      internal->howto = apollocoff_howto_table + 3; break;
  68    case R_PCRWORD:      internal->howto = apollocoff_howto_table + 4; break;
  69    case R_PCRLONG:      internal->howto = apollocoff_howto_table + 5; break;
  70    case R_RELLONG_NEG:  internal->howto = apollocoff_howto_table + 6; break;
  71   }
  72 }
  73
  74 int
  75 apollo_howto2rtype (internal)
  76      reloc_howto_type *internal;
  77 {
  78   if (internal->pc_relative)
  79   {
  80     switch (internal->bitsize)
  81     {
  82      case 32: return R_PCRLONG;
  83      case 16: return R_PCRWORD;
  84      case 8: return R_PCRBYTE;
  85     }
  86   }
  87   else
  88   {
  89     switch (internal->bitsize)
  90      {
  91       case 32: return R_RELLONG;
  92       case 16: return R_RELWORD;
  93       case 8: return R_RELBYTE;
  94      }
  95   }
  96   return R_RELLONG;
  97 }
  98 #endif /* not ONLY_DECLARE_RELOCS */
  99
 100 #define RTYPE2HOWTO(internal, relocentry) \
 101   apollo_rtype2howto(internal, (relocentry)->r_type)
 102
 103 #define SELECT_RELOC(external, internal) \
 104   external.r_type = apollo_howto2rtype(internal);
 105
 106 #include "coffcode.h"
 107
 108 #ifndef TARGET_SYM
 109 #define TARGET_SYM apollocoff_vec
 110 #endif
 111
 112 #ifndef TARGET_NAME
 113 #define TARGET_NAME "apollo-m68k"
 114 #endif
 115
 116 #ifdef NAMES_HAVE_UNDERSCORE
 117 CREATE_BIG_COFF_TARGET_VEC (TARGET_SYM, TARGET_NAME, 0, 0, '_', NULL)
 118 #else
 119 CREATE_BIG_COFF_TARGET_VEC (TARGET_SYM, TARGET_NAME, 0, 0, 0, NULL)
 120 #endif