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   0
 131 };
 132
 133 static const bfd_arch_info_type h8300sx_info_struct =
 134 {
 135   32,                           /* 32 bits in a word */
 136   32,                           /* 32 bits in an address */
 137   8,                            /* 8 bits in a byte */
 138   bfd_arch_h8300,
 139   bfd_mach_h8300sx,
 140   "h8300sx",                    /* arch_name  */
 141   "h8300sx",                    /* printable name */
 142   1,
 143   FALSE,                        /* the default machine */
 144   compatible,
 145   h8300_scan,
 146   &h8300sxn_info_struct
 147 };
 148
 149 static const bfd_arch_info_type h8300sn_info_struct =
 150 {
 151   32,                           /* 32 bits in a word.  */
 152   16,                           /* 16 bits in an address.  */
 153   8,                            /* 8 bits in a byte.  */
 154   bfd_arch_h8300,
 155   bfd_mach_h8300sn,
 156   "h8300sn",                    /* Architecture name.  */
 157   "h8300sn",                    /* Printable name.  */
 158   1,
 159   FALSE,                        /* The default machine.  */
 160   compatible,
 161   h8300_scan,
 162   &h8300sx_info_struct
 163 };
 164
 165 static const bfd_arch_info_type h8300hn_info_struct =
 166 {
 167   32,                           /* 32 bits in a word.  */
 168   16,                           /* 16 bits in an address.  */
 169   8,                            /* 8 bits in a byte.  */
 170   bfd_arch_h8300,
 171   bfd_mach_h8300hn,
 172   "h8300hn",                    /* Architecture name.  */
 173   "h8300hn",                    /* Printable name.  */
 174   1,
 175   FALSE,                        /* The default machine.  */
 176   compatible,
 177   h8300_scan,
 178   &h8300sn_info_struct
 179 };
 180
 181 static const bfd_arch_info_type h8300s_info_struct =
 182 {
 183   32,                           /* 32 bits in a word.  */
 184   32,                           /* 32 bits in an address.  */
 185   8,                            /* 8 bits in a byte.  */
 186   bfd_arch_h8300,
 187   bfd_mach_h8300s,
 188   "h8300s",                     /* Architecture name.  */
 189   "h8300s",                     /* Printable name.  */
 190   1,
 191   FALSE,                        /* The default machine.  */
 192   compatible,
 193   h8300_scan,
 194   & h8300hn_info_struct
 195 };
 196
 197 static const bfd_arch_info_type h8300h_info_struct =
 198 {
 199   32,                           /* 32 bits in a word.  */
 200   32,                           /* 32 bits in an address.  */
 201   8,                            /* 8 bits in a byte.  */
 202   bfd_arch_h8300,
 203   bfd_mach_h8300h,
 204   "h8300h",                     /* Architecture name.  */
 205   "h8300h",                     /* Printable name.  */
 206   1,
 207   FALSE,                        /* The default machine.  */
 208   compatible,
 209   h8300_scan,
 210   &h8300s_info_struct
 211 };
 212
 213 const bfd_arch_info_type bfd_h8300_arch =
 214 {
 215   16,                           /* 16 bits in a word.  */
 216   16,                           /* 16 bits in an address.  */
 217   8,                            /* 8 bits in a byte.  */
 218   bfd_arch_h8300,
 219   bfd_mach_h8300,
 220   "h8300",                      /* Architecture name.  */
 221   "h8300",                      /* Printable name.  */
 222   1,
 223   TRUE,                         /* The default machine.  */
 224   compatible,
 225   h8300_scan,
 226   &h8300h_info_struct
 227 };
 228
 229 /* Pad the given address to 32 bits, converting 16-bit and 24-bit
 230    addresses into the values they would have had on a h8s target.  */
 231
 232 bfd_vma
 233 bfd_h8300_pad_address (bfd *abfd, bfd_vma address)
 234 {
 235   /* Cope with bfd_vma's larger than 32 bits.  */
 236   address &= 0xffffffffu;
 237
 238   switch (bfd_get_mach (abfd))
 239     {
 240     case bfd_mach_h8300:
 241     case bfd_mach_h8300hn:
 242     case bfd_mach_h8300sn:
 243     case bfd_mach_h8300sxn:
 244       /* Sign extend a 16-bit address.  */
 245       if (address >= 0x8000)
 246         return address | 0xffff0000u;
 247       return address;
 248
 249     case bfd_mach_h8300h:
 250       /* Sign extend a 24-bit address.  */
 251       if (address >= 0x800000)
 252         return address | 0xff000000u;
 253       return address;
 254
 255     case bfd_mach_h8300s:
 256     case bfd_mach_h8300sx:
 257       return address;
 258
 259     default:
 260       abort ();
 261     }
 262 }