gnu/dist/gdb6/bfd/coff-apollo.c

   1 /* BFD back-end for Apollo 68000 COFF binaries.
   2    Copyright 1990, 1991, 1992, 1993, 1994, 1999, 2000, 2001, 2002, 2003
   3    Free Software Foundation, Inc.
   4    By Troy Rollo (troy@cbme.unsw.edu.au)
   5    Based on m68k standard COFF version Written by Cygnus Support.
   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., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */
  22
  23 #include "bfd.h"
  24 #include "sysdep.h"
  25 #include "libbfd.h"
  26 #include "coff/apollo.h"
  27 #include "coff/internal.h"
  28 #include "libcoff.h"
  29
  30 #define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (3)
  31
  32 #ifdef ONLY_DECLARE_RELOCS
  33 extern reloc_howto_type apollocoff_howto_table[];
  34 #else
  35 reloc_howto_type apollocoff_howto_table[] =
  36   {
  37     HOWTO (R_RELBYTE,          0,  0,   8,  FALSE, 0, complain_overflow_bitfield, 0, "8",       TRUE, 0x000000ff,0x000000ff, FALSE),
  38     HOWTO (R_RELWORD,          0,  1,   16, FALSE, 0, complain_overflow_bitfield, 0, "16",      TRUE, 0x0000ffff,0x0000ffff, FALSE),
  39     HOWTO (R_RELLONG,          0,  2,   32, FALSE, 0, complain_overflow_bitfield, 0, "32",      TRUE, 0xffffffff,0xffffffff, FALSE),
  40     HOWTO (R_PCRBYTE,          0,  0,   8,  TRUE,  0, complain_overflow_signed,   0, "DISP8",   TRUE, 0x000000ff,0x000000ff, FALSE),
  41     HOWTO (R_PCRWORD,          0,  1,   16, TRUE,  0, complain_overflow_signed,   0, "DISP16",  TRUE, 0x0000ffff,0x0000ffff, FALSE),
  42     HOWTO (R_PCRLONG,          0,  2,   32, TRUE,  0, complain_overflow_signed,   0, "DISP32",  TRUE, 0xffffffff,0xffffffff, FALSE),
  43     HOWTO (R_RELLONG_NEG,      0,  -2,  32, FALSE, 0, complain_overflow_bitfield, 0, "-32",     TRUE, 0xffffffff,0xffffffff, FALSE),
  44   };
  45 #endif /* not ONLY_DECLARE_RELOCS */
  46
  47 #ifndef BADMAG
  48 #define BADMAG(x) M68KBADMAG(x)
  49 #endif
  50 #define APOLLO_M68 1            /* Customize coffcode.h */
  51
  52 /* Turn a howto into a reloc number.  */
  53
  54 extern void apollo_rtype2howto PARAMS ((arelent *, int));
  55 extern int  apollo_howto2rtype PARAMS ((reloc_howto_type *));
  56 #ifndef ONLY_DECLARE_RELOCS
  57
  58 void
  59 apollo_rtype2howto (internal, relocentry)
  60      arelent *internal;
  61      int relocentry;
  62 {
  63   switch (relocentry)
  64     {
  65     case R_RELBYTE:     internal->howto = apollocoff_howto_table + 0; break;
  66     case R_RELWORD:     internal->howto = apollocoff_howto_table + 1; break;
  67     case R_RELLONG:     internal->howto = apollocoff_howto_table + 2; break;
  68     case R_PCRBYTE:     internal->howto = apollocoff_howto_table + 3; break;
  69     case R_PCRWORD:     internal->howto = apollocoff_howto_table + 4; break;
  70     case R_PCRLONG:     internal->howto = apollocoff_howto_table + 5; break;
  71     case R_RELLONG_NEG: internal->howto = apollocoff_howto_table + 6; break;
  72     }
  73 }
  74
  75 int
  76 apollo_howto2rtype (internal)
  77      reloc_howto_type *internal;
  78 {
  79   if (internal->pc_relative)
  80     {
  81       switch (internal->bitsize)
  82         {
  83         case 32: return R_PCRLONG;
  84         case 16: return R_PCRWORD;
  85         case 8: return R_PCRBYTE;
  86         }
  87     }
  88   else
  89     {
  90       switch (internal->bitsize)
  91         {
  92         case 32: return R_RELLONG;
  93         case 16: return R_RELWORD;
  94         case 8: return R_RELBYTE;
  95         }
  96     }
  97   return R_RELLONG;
  98 }
  99 #endif /* not ONLY_DECLARE_RELOCS */
 100
 101 #define RTYPE2HOWTO(internal, relocentry) \
 102   apollo_rtype2howto (internal, (relocentry)->r_type)
 103
 104 #define SELECT_RELOC(external, internal) \
 105   external.r_type = apollo_howto2rtype (internal);
 106
 107 #include "coffcode.h"
 108
 109 #ifndef TARGET_SYM
 110 #define TARGET_SYM apollocoff_vec
 111 #endif
 112
 113 #ifndef TARGET_NAME
 114 #define TARGET_NAME "apollo-m68k"
 115 #endif
 116
 117 #ifdef NAMES_HAVE_UNDERSCORE
 118 CREATE_BIG_COFF_TARGET_VEC (TARGET_SYM, TARGET_NAME, 0, 0, '_', NULL, COFF_SWAP_TABLE)
 119 #else
 120 CREATE_BIG_COFF_TARGET_VEC (TARGET_SYM, TARGET_NAME, 0, 0, 0, NULL, COFF_SWAP_TABLE)
 121 #endif