bfd/cpu-z8k.c

   1 /* BFD library support routines for the Z800n architecture.
   2    Copyright 1992, 1993, 1994, 2000, 2001, 2002
   3    Free Software Foundation, Inc.
   4    Hacked by Steve Chamberlain of 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
  26 static const bfd_arch_info_type *compatible
  27   PARAMS ((const bfd_arch_info_type *, const bfd_arch_info_type *));
  28
  29 #if 0                           /* not used currently */
  30 /*
  31 Relocations for the Z8K
  32
  33 */
  34 static bfd_reloc_status_type
  35 howto16_callback (abfd, reloc_entry, symbol_in, data,
  36                   ignore_input_section, ignore_bfd)
  37      bfd *abfd;
  38      arelent *reloc_entry;
  39      struct symbol_cache_entry *symbol_in;
  40      PTR data;
  41      asection *ignore_input_section;
  42      bfd *ignore_bfd;
  43 {
  44   long relocation = 0;
  45   bfd_vma addr = reloc_entry->address;
  46   long x = bfd_get_16 (abfd, (bfd_byte *) data + addr);
  47
  48   HOWTO_PREPARE (relocation, symbol_in);
  49
  50   x = (x + relocation + reloc_entry->addend);
  51
  52   bfd_put_16 (abfd, x, (bfd_byte *) data + addr);
  53   return bfd_reloc_ok;
  54 }
  55
  56 static bfd_reloc_status_type
  57 howto8_callback (abfd, reloc_entry, symbol_in, data,
  58                  ignore_input_section, ignore_bfd)
  59      bfd *abfd;
  60      arelent *reloc_entry;
  61      struct symbol_cache_entry *symbol_in;
  62      PTR data;
  63      asection *ignore_input_section;
  64      bfd *ignore_bfd;
  65 {
  66   long relocation = 0;
  67   bfd_vma addr = reloc_entry->address;
  68   long x = bfd_get_8 (abfd, (bfd_byte *) data + addr);
  69
  70   HOWTO_PREPARE (relocation, symbol_in);
  71
  72   x = (x + relocation + reloc_entry->addend);
  73
  74   bfd_put_8 (abfd, x, (bfd_byte *) data + addr);
  75   return bfd_reloc_ok;
  76 }
  77
  78 static bfd_reloc_status_type
  79 howto8_FFnn_callback (abfd, reloc_entry, symbol_in, data,
  80                       ignore_input_section, ignore_bfd)
  81      bfd *abfd;
  82      arelent *reloc_entry;
  83      struct symbol_cache_entry *symbol_in;
  84      PTR data;
  85      asection *ignore_input_section;
  86      bfd *ignore_bfd;
  87 {
  88   long relocation = 0;
  89   bfd_vma addr = reloc_entry->address;
  90
  91   long x = bfd_get_8 (abfd, (bfd_byte *) data + addr);
  92   abort ();
  93   HOWTO_PREPARE (relocation, symbol_in);
  94
  95   x = (x + relocation + reloc_entry->addend);
  96
  97   bfd_put_8 (abfd, x, (bfd_byte *) data + addr);
  98   return bfd_reloc_ok;
  99 }
 100
 101 static bfd_reloc_status_type
 102 howto8_pcrel_callback (abfd, reloc_entry, symbol_in, data,
 103                        ignore_input_section, ignore_bfd)
 104      bfd *abfd;
 105      arelent *reloc_entry;
 106      struct symbol_cache_entry *symbol_in;
 107      PTR data;
 108      asection *ignore_input_section;
 109      bfd *ignore_bfd;
 110 {
 111   long relocation = 0;
 112   bfd_vma addr = reloc_entry->address;
 113   long x = bfd_get_8 (abfd, (bfd_byte *) data + addr);
 114   abort ();
 115   HOWTO_PREPARE (relocation, symbol_in);
 116
 117   x = (x + relocation + reloc_entry->addend);
 118
 119   bfd_put_8 (abfd, x, (bfd_byte *) data + addr);
 120   return bfd_reloc_ok;
 121 }
 122
 123 static reloc_howto_type howto_16
 124 = NEWHOWTO (howto16_callback, "abs16", 1, FALSE, FALSE);
 125 static reloc_howto_type howto_8
 126 = NEWHOWTO (howto8_callback, "abs8", 0, FALSE, FALSE);
 127
 128 static reloc_howto_type howto_8_FFnn
 129 = NEWHOWTO (howto8_FFnn_callback, "ff00+abs8", 0, FALSE, FALSE);
 130
 131 static reloc_howto_type howto_8_pcrel
 132 = NEWHOWTO (howto8_pcrel_callback, "pcrel8", 0, FALSE, TRUE);
 133
 134 static reloc_howto_type *
 135 local_bfd_reloc_type_lookup (arch, code)
 136      const struct bfd_arch_info *arch;
 137      bfd_reloc_code_real_type code;
 138 {
 139   switch (code)
 140     {
 141     case BFD_RELOC_16:
 142       return &howto_16;
 143     case BFD_RELOC_8_FFnn:
 144       return &howto_8_FFnn;
 145     case BFD_RELOC_8:
 146       return &howto_8;
 147     case BFD_RELOC_8_PCREL:
 148       return &howto_8_pcrel;
 149     default:
 150       return (reloc_howto_type *) NULL;
 151     }
 152 }
 153 #endif
 154
 155 /* This routine is provided two arch_infos and returns whether
 156    they'd be compatible */
 157
 158 static const bfd_arch_info_type *
 159 compatible (a, b)
 160      const bfd_arch_info_type *a;
 161      const bfd_arch_info_type *b;
 162 {
 163   if (a->arch != b->arch || a->mach != b->mach)
 164     return NULL;
 165   return a;
 166 }
 167
 168 static const bfd_arch_info_type arch_info_struct[] =
 169 {
 170   { 32, 16, 8, bfd_arch_z8k, bfd_mach_z8002, "z8k", "z8002", 1, FALSE,
 171     compatible, bfd_default_scan, 0 }
 172 };
 173
 174 const bfd_arch_info_type bfd_z8k_arch =
 175 {
 176   32, 32, 8, bfd_arch_z8k, bfd_mach_z8001, "z8k", "z8001", 1, TRUE,
 177   compatible, bfd_default_scan, &arch_info_struct[0]
 178 };