bfd/cpu-z8k.c

   1 /* BFD library support routines for the Z800n architecture.
   2    Copyright (C) 1992 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 #if 0                           /* not used currently */
  26 /*
  27 Relocations for the Z8K
  28
  29 */
  30 static bfd_reloc_status_type
  31 howto16_callback (abfd, reloc_entry, symbol_in, data,
  32                   ignore_input_section, ignore_bfd)
  33      bfd *abfd;
  34      arelent *reloc_entry;
  35      struct symbol_cache_entry *symbol_in;
  36      PTR data;
  37      asection *ignore_input_section;
  38      bfd *ignore_bfd;
  39 {
  40   long relocation = 0;
  41   bfd_vma addr = reloc_entry->address;
  42   long x = bfd_get_16 (abfd, (bfd_byte *) data + addr);
  43
  44   HOWTO_PREPARE (relocation, symbol_in);
  45
  46   x = (x + relocation + reloc_entry->addend);
  47
  48   bfd_put_16 (abfd, x, (bfd_byte *) data + addr);
  49   return bfd_reloc_ok;
  50 }
  51
  52 static bfd_reloc_status_type
  53 howto8_callback (abfd, reloc_entry, symbol_in, data,
  54                  ignore_input_section, ignore_bfd)
  55      bfd *abfd;
  56      arelent *reloc_entry;
  57      struct symbol_cache_entry *symbol_in;
  58      PTR data;
  59      asection *ignore_input_section;
  60      bfd *ignore_bfd;
  61 {
  62   long relocation = 0;
  63   bfd_vma addr = reloc_entry->address;
  64   long x = bfd_get_8 (abfd, (bfd_byte *) data + addr);
  65
  66   HOWTO_PREPARE (relocation, symbol_in);
  67
  68   x = (x + relocation + reloc_entry->addend);
  69
  70   bfd_put_8 (abfd, x, (bfd_byte *) data + addr);
  71   return bfd_reloc_ok;
  72 }
  73
  74 static bfd_reloc_status_type
  75 howto8_FFnn_callback (abfd, reloc_entry, symbol_in, data,
  76                       ignore_input_section, ignore_bfd)
  77      bfd *abfd;
  78      arelent *reloc_entry;
  79      struct symbol_cache_entry *symbol_in;
  80      PTR data;
  81      asection *ignore_input_section;
  82      bfd *ignore_bfd;
  83 {
  84   long relocation = 0;
  85   bfd_vma addr = reloc_entry->address;
  86
  87   long x = bfd_get_8 (abfd, (bfd_byte *) data + addr);
  88   abort ();
  89   HOWTO_PREPARE (relocation, symbol_in);
  90
  91   x = (x + relocation + reloc_entry->addend);
  92
  93   bfd_put_8 (abfd, x, (bfd_byte *) data + addr);
  94   return bfd_reloc_ok;
  95 }
  96
  97 static bfd_reloc_status_type
  98 howto8_pcrel_callback (abfd, reloc_entry, symbol_in, data,
  99                        ignore_input_section, ignore_bfd)
 100      bfd *abfd;
 101      arelent *reloc_entry;
 102      struct symbol_cache_entry *symbol_in;
 103      PTR data;
 104      asection *ignore_input_section;
 105      bfd *ignore_bfd;
 106 {
 107   long relocation = 0;
 108   bfd_vma addr = reloc_entry->address;
 109   long x = bfd_get_8 (abfd, (bfd_byte *) data + addr);
 110   abort ();
 111   HOWTO_PREPARE (relocation, symbol_in);
 112
 113   x = (x + relocation + reloc_entry->addend);
 114
 115   bfd_put_8 (abfd, x, (bfd_byte *) data + addr);
 116   return bfd_reloc_ok;
 117 }
 118
 119 static reloc_howto_type howto_16
 120 = NEWHOWTO (howto16_callback, "abs16", 1, false, false);
 121 static reloc_howto_type howto_8
 122 = NEWHOWTO (howto8_callback, "abs8", 0, false, false);
 123
 124 static reloc_howto_type howto_8_FFnn
 125 = NEWHOWTO (howto8_FFnn_callback, "ff00+abs8", 0, false, false);
 126
 127 static reloc_howto_type howto_8_pcrel
 128 = NEWHOWTO (howto8_pcrel_callback, "pcrel8", 0, false, true);
 129
 130 static reloc_howto_type *
 131 local_bfd_reloc_type_lookup (arch, code)
 132      const struct bfd_arch_info *arch;
 133      bfd_reloc_code_real_type code;
 134 {
 135   switch (code)
 136     {
 137     case BFD_RELOC_16:
 138       return &howto_16;
 139     case BFD_RELOC_8_FFnn:
 140       return &howto_8_FFnn;
 141     case BFD_RELOC_8:
 142       return &howto_8;
 143     case BFD_RELOC_8_PCREL:
 144       return &howto_8_pcrel;
 145     default:
 146       return (reloc_howto_type *) NULL;
 147     }
 148 }
 149 #endif
 150
 151 int bfd_default_scan_num_mach ();
 152
 153 static boolean
 154 scan_mach (info, string)
 155      const struct bfd_arch_info *info;
 156      const char *string;
 157 {
 158   if (strcmp (string, "z8001") == 0 || strcmp (string, "z8k") == 0)
 159     {
 160       return bfd_mach_z8001 == info->mach;
 161     }
 162   if (strcmp (string, "z8002") == 0)
 163     {
 164       return bfd_mach_z8002 == info->mach;
 165     }
 166   return false;
 167 }
 168
 169 /* This routine is provided two arch_infos and returns whether
 170    they'd be compatible */
 171
 172 static const bfd_arch_info_type *
 173 compatible (a, b)
 174      const bfd_arch_info_type *a;
 175      const bfd_arch_info_type *b;
 176 {
 177   if (a->arch != b->arch || a->mach != b->mach)
 178     return NULL;
 179   return a;
 180 }
 181
 182 static const bfd_arch_info_type arch_info_struct[] =
 183 {
 184   {32, 32, 8, bfd_arch_z8k, bfd_mach_z8001, "z8k", "z8001", 1, false, compatible, scan_mach, 0,},
 185 };
 186
 187 const bfd_arch_info_type bfd_z8k_arch =
 188 {
 189   32, 16, 8, bfd_arch_z8k, bfd_mach_z8002, "z8k", "z8002", 1, true, compatible, scan_mach, &arch_info_struct[0],
 190 };