* libbfd.c (real_read): don't call fread for zero bytes. This

[deliverable/binutils-gdb.git] / bfd / cpu-v850.c

/* BFD support for the NEC V850 processor
   Copyright 1996, 1997 Free Software Foundation, Inc.

This file is part of BFD, the Binary File Descriptor library.

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */

#include "bfd.h"
#include "sysdep.h"
#include "libbfd.h"

static boolean 
scan (info, string)
     const struct bfd_arch_info * info;
     const char * string;
{
  const char *ptr_src;
  const char *ptr_tst;
  unsigned long number;
  enum bfd_architecture arch;

  /* First test for an exact match */
  if (strcasecmp (string, info->printable_name) == 0)
    return true;

  /* See how much of the supplied string matches with the
     architecture, eg the string m68k:68020 would match the m68k entry
     up to the :, then we get left with the machine number */

  for (ptr_src = string, ptr_tst = info->arch_name; 
       *ptr_src && *ptr_tst;
       ptr_src++, ptr_tst++) 
    {
      if (*ptr_src != *ptr_tst) break;
    }

  /* Chewed up as much of the architecture as will match, skip any
     colons */
  if (*ptr_src == ':')
    ptr_src++;
  
  if (*ptr_src == 0)
    {
      /* nothing more, then only keep this one if it is the default
	 machine for this architecture */
      return info->the_default;
    }

  number = 0;
  while (isdigit (*ptr_src))
    {
      number = number * 10 + * ptr_src  - '0';
      ptr_src++;
    }

  switch (number) 
    {
/* start-sanitize-v850e */
    case bfd_mach_v850e:  arch = bfd_arch_v850; break;
/* end-sanitize-v850e */
/* start-sanitize-v850eq */
    case bfd_mach_v850eq: arch = bfd_arch_v850; break;
/* end-sanitize-v850eq */

    default:  
      return false;
    }

  if (arch != info->arch) 
    return false;

  if (number != info->mach)
    return false;

  return true;
}

#define N(number, print, default, next)  \
{  32, 32, 8, bfd_arch_v850, number, "v850", print, 2, default, bfd_default_compatible, scan, next }

static const bfd_arch_info_type arch_info_struct[2] = 
{
/* start-sanitize-v850e */
  N( bfd_mach_v850e, "v850e", false, & arch_info_struct[1] ),
/* end-sanitize-v850e */
/* start-sanitize-v850eq */
  N( bfd_mach_v850eq, "v850eq", false, NULL ),
/* end-sanitize-v850eq */
};

const bfd_arch_info_type bfd_v850_arch =
  N( bfd_mach_v850, "v850", true, & arch_info_struct[0] );