bfd/cpu-z8k.c

   1 /* BFD library support routines for the Z800n architecture.
   2    Copyright 1992, 1993, 1994, 2000, 2001 Free Software Foundation, Inc.
   3    Hacked by Steve Chamberlain of Cygnus Support.
   4
   5 This file is part of BFD, the Binary File Descriptor library.
   6
   7 This program is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 2 of the License, or
  10 (at your option) any later version.
  11
  12 This program is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with this program; if not, write to the Free Software
  19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  20
  21 #include "bfd.h"
  22 #include "sysdep.h"
  23 #include "libbfd.h"
  24
  25 static const bfd_arch_info_type *compatible
  26   PARAMS ((const bfd_arch_info_type *, const bfd_arch_info_type *));
  27
  28 #if 0                           /* not used currently */
  29 /*
  30 Relocations for the Z8K
  31
  32 */
  33 static bfd_reloc_status_type
  34 howto16_callback (abfd, reloc_entry, symbol_in, data,
  35                   ignore_input_section, ignore_bfd)
  36      bfd *abfd;
  37      arelent *reloc_entry;
  38      struct symbol_cache_entry *symbol_in;
  39      PTR data;
  40      asection *ignore_input_section;
  41      bfd *ignore_bfd;
  42 {
  43   long relocation = 0;
  44   bfd_vma addr = reloc_entry->address;
  45   long x = bfd_get_16 (abfd, (bfd_byte *) data + addr);
  46
  47   HOWTO_PREPARE (relocation, symbol_in);
  48
  49   x = (x + relocation + reloc_entry->addend);
  50
  51   bfd_put_16 (abfd, x, (bfd_byte *) data + addr);
  52   return bfd_reloc_ok;
  53 }
  54
  55 static bfd_reloc_status_type
  56 howto8_callback (abfd, reloc_entry, symbol_in, data,
  57                  ignore_input_section, ignore_bfd)
  58      bfd *abfd;
  59      arelent *reloc_entry;
  60      struct symbol_cache_entry *symbol_in;
  61      PTR data;
  62      asection *ignore_input_section;
  63      bfd *ignore_bfd;
  64 {
  65   long relocation = 0;
  66   bfd_vma addr = reloc_entry->address;
  67   long x = bfd_get_8 (abfd, (bfd_byte *) data + addr);
  68
  69   HOWTO_PREPARE (relocation, symbol_in);
  70
  71   x = (x + relocation + reloc_entry->addend);
  72
  73   bfd_put_8 (abfd, x, (bfd_byte *) data + addr);
  74   return bfd_reloc_ok;
  75 }
  76
  77 static bfd_reloc_status_type
  78 howto8_FFnn_callback (abfd, reloc_entry, symbol_in, data,
  79                       ignore_input_section, ignore_bfd)
  80      bfd *abfd;
  81      arelent *reloc_entry;
  82      struct symbol_cache_entry *symbol_in;
  83      PTR data;
  84      asection *ignore_input_section;
  85      bfd *ignore_bfd;
  86 {
  87   long relocation = 0;
  88   bfd_vma addr = reloc_entry->address;
  89
  90   long x = bfd_get_8 (abfd, (bfd_byte *) data + addr);
  91   abort ();
  92   HOWTO_PREPARE (relocation, symbol_in);
  93
  94   x = (x + relocation + reloc_entry->addend);
  95
  96   bfd_put_8 (abfd, x, (bfd_byte *) data + addr);
  97   return bfd_reloc_ok;
  98 }
  99
 100 static bfd_reloc_status_type
 101 howto8_pcrel_callback (abfd, reloc_entry, symbol_in, data,
 102                        ignore_input_section, ignore_bfd)
 103      bfd *abfd;
 104      arelent *reloc_entry;
 105      struct symbol_cache_entry *symbol_in;
 106      PTR data;
 107      asection *ignore_input_section;
 108      bfd *ignore_bfd;
 109 {
 110   long relocation = 0;
 111   bfd_vma addr = reloc_entry->address;
 112   long x = bfd_get_8 (abfd, (bfd_byte *) data + addr);
 113   abort ();
 114   HOWTO_PREPARE (relocation, symbol_in);
 115
 116   x = (x + relocation + reloc_entry->addend);
 117
 118   bfd_put_8 (abfd, x, (bfd_byte *) data + addr);
 119   return bfd_reloc_ok;
 120 }
 121
 122 static reloc_howto_type howto_16
 123 = NEWHOWTO (howto16_callback, "abs16", 1, false, false);
 124 static reloc_howto_type howto_8
 125 = NEWHOWTO (howto8_callback, "abs8", 0, false, false);
 126
 127 static reloc_howto_type howto_8_FFnn
 128 = NEWHOWTO (howto8_FFnn_callback, "ff00+abs8", 0, false, false);
 129
 130 static reloc_howto_type howto_8_pcrel
 131 = NEWHOWTO (howto8_pcrel_callback, "pcrel8", 0, false, true);
 132
 133 static reloc_howto_type *
 134 local_bfd_reloc_type_lookup (arch, code)
 135      const struct bfd_arch_info *arch;
 136      bfd_reloc_code_real_type code;
 137 {
 138   switch (code)
 139     {
 140     case BFD_RELOC_16:
 141       return &howto_16;
 142     case BFD_RELOC_8_FFnn:
 143       return &howto_8_FFnn;
 144     case BFD_RELOC_8:
 145       return &howto_8;
 146     case BFD_RELOC_8_PCREL:
 147       return &howto_8_pcrel;
 148     default:
 149       return (reloc_howto_type *) NULL;
 150     }
 151 }
 152 #endif
 153
 154 /* This routine is provided two arch_infos and returns whether
 155    they'd be compatible */
 156
 157 static const bfd_arch_info_type *
 158 compatible (a, b)
 159      const bfd_arch_info_type *a;
 160      const bfd_arch_info_type *b;
 161 {
 162   if (a->arch != b->arch || a->mach != b->mach)
 163     return NULL;
 164   return a;
 165 }
 166
 167 static const bfd_arch_info_type arch_info_struct[] =
 168 {
 169   { 32, 16, 8, bfd_arch_z8k, bfd_mach_z8002, "z8k", "z8002", 1, false,
 170     compatible, bfd_default_scan, 0 }
 171 };
 172
 173 const bfd_arch_info_type bfd_z8k_arch =
 174 {
 175   32, 32, 8, bfd_arch_z8k, bfd_mach_z8001, "z8k", "z8001", 1, true,
 176   compatible, bfd_default_scan, &arch_info_struct[0]
 177 };