bfd/cpu-h8300.c

   1 /* BFD library support routines for the Renesas H8/300 architecture.
   2    Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 2000, 2001, 2002,
   3    2003, 2004, 2005, 2007 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 3 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., 51 Franklin Street - Fifth Floor, Boston,
  21    MA 02110-1301, USA.  */
  22
  23 #include "sysdep.h"
  24 #include "bfd.h"
  25 #include "libbfd.h"
  26
  27 static bfd_boolean
  28 h8300_scan (const struct bfd_arch_info *info, const char *string)
  29 {
  30   if (*string != 'h' && *string != 'H')
  31     return FALSE;
  32
  33   string++;
  34   if (*string != '8')
  35     return FALSE;
  36
  37   string++;
  38   if (*string == '/')
  39     string++;
  40
  41   if (*string != '3')
  42     return FALSE;
  43   string++;
  44   if (*string != '0')
  45     return FALSE;
  46   string++;
  47   if (*string != '0')
  48     return FALSE;
  49   string++;
  50   if (*string == '-')
  51     string++;
  52
  53   /* In ELF linker scripts, we typically express the architecture/machine
  54      as architecture:machine.
  55
  56      So if we've matched so far and encounter a colon, try to match the
  57      string following the colon.  */
  58   if (*string == ':')
  59     {
  60       string++;
  61       return h8300_scan (info, string);
  62     }
  63
  64   if (*string == 'h' || *string == 'H')
  65     {
  66       string++;
  67       if (*string == 'n' || *string == 'N')
  68         return (info->mach == bfd_mach_h8300hn);
  69
  70       return (info->mach == bfd_mach_h8300h);
  71     }
  72   else if (*string == 's' || *string == 'S')
  73     {
  74       string++;
  75       if (*string == 'n' || *string == 'N')
  76         return (info->mach == bfd_mach_h8300sn);
  77
  78       if (*string == 'x' || *string == 'X')
  79         {
  80           string++;
  81           if (*string == 'n' || *string == 'N')
  82             return (info->mach == bfd_mach_h8300sxn);
  83
  84           return (info->mach == bfd_mach_h8300sx);
  85         }
  86
  87       return (info->mach == bfd_mach_h8300s);
  88     }
  89   else
  90     return info->mach == bfd_mach_h8300;
  91 }
  92
  93 /* This routine is provided two arch_infos and works out the machine
  94    which would be compatible with both and returns a pointer to its
  95    info structure.  */
  96
  97 static const bfd_arch_info_type *
  98 compatible (const bfd_arch_info_type *in, const bfd_arch_info_type *out)
  99 {
 100   if (in->arch != out->arch)
 101     return 0;
 102   if (in->mach == bfd_mach_h8300sx && out->mach == bfd_mach_h8300s)
 103     return in;
 104   if (in->mach == bfd_mach_h8300s && out->mach == bfd_mach_h8300sx)
 105     return out;
 106   if (in->mach == bfd_mach_h8300sxn && out->mach == bfd_mach_h8300sn)
 107     return in;
 108   if (in->mach == bfd_mach_h8300sn && out->mach == bfd_mach_h8300sxn)
 109     return out;
 110   /* It's really not a good idea to mix and match modes.  */
 111   if (in->mach != out->mach)
 112     return 0;
 113   else
 114     return in;
 115 }
 116
 117 static const bfd_arch_info_type h8300sxn_info_struct =
 118 {
 119   32,                           /* 32 bits in a word */
 120   16,                           /* 16 bits in an address */
 121   8,                            /* 8 bits in a byte */
 122   bfd_arch_h8300,
 123   bfd_mach_h8300sxn,
 124   "h8300sxn",                   /* arch_name  */
 125   "h8300sxn",                   /* printable name */
 126   1,
 127   FALSE,                        /* the default machine */
 128   compatible,
 129   h8300_scan,
 130   bfd_arch_default_fill,
 131   0
 132 };
 133
 134 static const bfd_arch_info_type h8300sx_info_struct =
 135 {
 136   32,                           /* 32 bits in a word */
 137   32,                           /* 32 bits in an address */
 138   8,                            /* 8 bits in a byte */
 139   bfd_arch_h8300,
 140   bfd_mach_h8300sx,
 141   "h8300sx",                    /* arch_name  */
 142   "h8300sx",                    /* printable name */
 143   1,
 144   FALSE,                        /* the default machine */
 145   compatible,
 146   h8300_scan,
 147   bfd_arch_default_fill,
 148   &h8300sxn_info_struct
 149 };
 150
 151 static const bfd_arch_info_type h8300sn_info_struct =
 152 {
 153   32,                           /* 32 bits in a word.  */
 154   16,                           /* 16 bits in an address.  */
 155   8,                            /* 8 bits in a byte.  */
 156   bfd_arch_h8300,
 157   bfd_mach_h8300sn,
 158   "h8300sn",                    /* Architecture name.  */
 159   "h8300sn",                    /* Printable name.  */
 160   1,
 161   FALSE,                        /* The default machine.  */
 162   compatible,
 163   h8300_scan,
 164   bfd_arch_default_fill,
 165   &h8300sx_info_struct
 166 };
 167
 168 static const bfd_arch_info_type h8300hn_info_struct =
 169 {
 170   32,                           /* 32 bits in a word.  */
 171   16,                           /* 16 bits in an address.  */
 172   8,                            /* 8 bits in a byte.  */
 173   bfd_arch_h8300,
 174   bfd_mach_h8300hn,
 175   "h8300hn",                    /* Architecture name.  */
 176   "h8300hn",                    /* Printable name.  */
 177   1,
 178   FALSE,                        /* The default machine.  */
 179   compatible,
 180   h8300_scan,
 181   bfd_arch_default_fill,
 182   &h8300sn_info_struct
 183 };
 184
 185 static const bfd_arch_info_type h8300s_info_struct =
 186 {
 187   32,                           /* 32 bits in a word.  */
 188   32,                           /* 32 bits in an address.  */
 189   8,                            /* 8 bits in a byte.  */
 190   bfd_arch_h8300,
 191   bfd_mach_h8300s,
 192   "h8300s",                     /* Architecture name.  */
 193   "h8300s",                     /* Printable name.  */
 194   1,
 195   FALSE,                        /* The default machine.  */
 196   compatible,
 197   h8300_scan,
 198   bfd_arch_default_fill,
 199   & h8300hn_info_struct
 200 };
 201
 202 static const bfd_arch_info_type h8300h_info_struct =
 203 {
 204   32,                           /* 32 bits in a word.  */
 205   32,                           /* 32 bits in an address.  */
 206   8,                            /* 8 bits in a byte.  */
 207   bfd_arch_h8300,
 208   bfd_mach_h8300h,
 209   "h8300h",                     /* Architecture name.  */
 210   "h8300h",                     /* Printable name.  */
 211   1,
 212   FALSE,                        /* The default machine.  */
 213   compatible,
 214   h8300_scan,
 215   bfd_arch_default_fill,
 216   &h8300s_info_struct
 217 };
 218
 219 const bfd_arch_info_type bfd_h8300_arch =
 220 {
 221   16,                           /* 16 bits in a word.  */
 222   16,                           /* 16 bits in an address.  */
 223   8,                            /* 8 bits in a byte.  */
 224   bfd_arch_h8300,
 225   bfd_mach_h8300,
 226   "h8300",                      /* Architecture name.  */
 227   "h8300",                      /* Printable name.  */
 228   1,
 229   TRUE,                         /* The default machine.  */
 230   compatible,
 231   h8300_scan,
 232   bfd_arch_default_fill,
 233   &h8300h_info_struct
 234 };
 235
 236 /* Pad the given address to 32 bits, converting 16-bit and 24-bit
 237    addresses into the values they would have had on a h8s target.  */
 238
 239 bfd_vma
 240 bfd_h8300_pad_address (bfd *abfd, bfd_vma address)
 241 {
 242   /* Cope with bfd_vma's larger than 32 bits.  */
 243   address &= 0xffffffffu;
 244
 245   switch (bfd_get_mach (abfd))
 246     {
 247     case bfd_mach_h8300:
 248     case bfd_mach_h8300hn:
 249     case bfd_mach_h8300sn:
 250     case bfd_mach_h8300sxn:
 251       /* Sign extend a 16-bit address.  */
 252       if (address >= 0x8000)
 253         return address | 0xffff0000u;
 254       return address;
 255
 256     case bfd_mach_h8300h:
 257       /* Sign extend a 24-bit address.  */
 258       if (address >= 0x800000)
 259         return address | 0xff000000u;
 260       return address;
 261
 262     case bfd_mach_h8300s:
 263     case bfd_mach_h8300sx:
 264       return address;
 265
 266     default:
 267       abort ();
 268     }
 269 }