bfd/cpu-h8300.c

   1 /* BFD library support routines for the Renesas H8/300 architecture.
   2    Copyright (C) 1990-2019 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 3 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., 51 Franklin Street - Fifth Floor, Boston,
  20    MA 02110-1301, USA.  */
  21
  22 #include "sysdep.h"
  23 #include "bfd.h"
  24 #include "libbfd.h"
  25
  26 static bfd_boolean
  27 h8300_scan (const struct bfd_arch_info *info, const char *string)
  28 {
  29   if (*string != 'h' && *string != 'H')
  30     return FALSE;
  31
  32   string++;
  33   if (*string != '8')
  34     return FALSE;
  35
  36   string++;
  37   if (*string == '/')
  38     string++;
  39
  40   if (*string != '3')
  41     return FALSE;
  42   string++;
  43   if (*string != '0')
  44     return FALSE;
  45   string++;
  46   if (*string != '0')
  47     return FALSE;
  48   string++;
  49   if (*string == '-')
  50     string++;
  51
  52   /* In ELF linker scripts, we typically express the architecture/machine
  53      as architecture:machine.
  54
  55      So if we've matched so far and encounter a colon, try to match the
  56      string following the colon.  */
  57   if (*string == ':')
  58     {
  59       string++;
  60       return h8300_scan (info, string);
  61     }
  62
  63   if (*string == 'h' || *string == 'H')
  64     {
  65       string++;
  66       if (*string == 'n' || *string == 'N')
  67         return (info->mach == bfd_mach_h8300hn);
  68
  69       return (info->mach == bfd_mach_h8300h);
  70     }
  71   else if (*string == 's' || *string == 'S')
  72     {
  73       string++;
  74       if (*string == 'n' || *string == 'N')
  75         return (info->mach == bfd_mach_h8300sn);
  76
  77       if (*string == 'x' || *string == 'X')
  78         {
  79           string++;
  80           if (*string == 'n' || *string == 'N')
  81             return (info->mach == bfd_mach_h8300sxn);
  82
  83           return (info->mach == bfd_mach_h8300sx);
  84         }
  85
  86       return (info->mach == bfd_mach_h8300s);
  87     }
  88   else
  89     return info->mach == bfd_mach_h8300;
  90 }
  91
  92 /* This routine is provided two arch_infos and works out the machine
  93    which would be compatible with both and returns a pointer to its
  94    info structure.  */
  95
  96 static const bfd_arch_info_type *
  97 compatible (const bfd_arch_info_type *in, const bfd_arch_info_type *out)
  98 {
  99   if (in->arch != out->arch)
 100     return 0;
 101   if (in->mach == bfd_mach_h8300sx && out->mach == bfd_mach_h8300s)
 102     return in;
 103   if (in->mach == bfd_mach_h8300s && out->mach == bfd_mach_h8300sx)
 104     return out;
 105   if (in->mach == bfd_mach_h8300sxn && out->mach == bfd_mach_h8300sn)
 106     return in;
 107   if (in->mach == bfd_mach_h8300sn && out->mach == bfd_mach_h8300sxn)
 108     return out;
 109   /* It's really not a good idea to mix and match modes.  */
 110   if (in->mach != out->mach)
 111     return 0;
 112   else
 113     return in;
 114 }
 115
 116 #define N(word, addr, number, name, print, default, next)         \
 117   { word, addr, 8, bfd_arch_h8300, number, name, print, 1, default, \
 118     compatible, h8300_scan, bfd_arch_default_fill, next, 0 }
 119
 120 static const bfd_arch_info_type h8300sxn_info_struct =
 121   N (32, 16, bfd_mach_h8300sxn, "h8300sxn", "h8300sxn", FALSE, NULL);
 122
 123 static const bfd_arch_info_type h8300sx_info_struct =
 124   N (32, 32, bfd_mach_h8300sx, "h8300sx", "h8300sx", FALSE, &h8300sxn_info_struct);
 125
 126 static const bfd_arch_info_type h8300sn_info_struct =
 127   N (32, 16, bfd_mach_h8300sn, "h8300sn", "h8300sn", FALSE, &h8300sx_info_struct);
 128
 129 static const bfd_arch_info_type h8300hn_info_struct =
 130   N (32, 16, bfd_mach_h8300hn, "h8300hn", "h8300hn", FALSE, &h8300sn_info_struct);
 131
 132 static const bfd_arch_info_type h8300s_info_struct =
 133   N (32, 32, bfd_mach_h8300s, "h8300s", "h8300s", FALSE, & h8300hn_info_struct);
 134
 135 static const bfd_arch_info_type h8300h_info_struct =
 136   N (32, 32, bfd_mach_h8300h, "h8300h", "h8300h", FALSE, &h8300s_info_struct);
 137
 138 const bfd_arch_info_type bfd_h8300_arch =
 139   N (16, 16, bfd_mach_h8300, "h8300", "h8300", TRUE, &h8300h_info_struct);
 140
 141 /* Pad the given address to 32 bits, converting 16-bit and 24-bit
 142    addresses into the values they would have had on a h8s target.  */
 143
 144 bfd_vma
 145 bfd_h8300_pad_address (bfd *abfd, bfd_vma address)
 146 {
 147   /* Cope with bfd_vma's larger than 32 bits.  */
 148   address &= 0xffffffffu;
 149
 150   switch (bfd_get_mach (abfd))
 151     {
 152     case bfd_mach_h8300:
 153     case bfd_mach_h8300hn:
 154     case bfd_mach_h8300sn:
 155     case bfd_mach_h8300sxn:
 156       /* Sign extend a 16-bit address.  */
 157       if (address >= 0x8000)
 158         return address | 0xffff0000u;
 159       return address;
 160
 161     case bfd_mach_h8300h:
 162       /* Sign extend a 24-bit address.  */
 163       if (address >= 0x800000)
 164         return address | 0xff000000u;
 165       return address;
 166
 167     case bfd_mach_h8300s:
 168     case bfd_mach_h8300sx:
 169       return address;
 170
 171     default:
 172       abort ();
 173     }
 174 }