source: trunk/src/binutils/opcodes/dis-buf.c@ 610

/* Disassemble from a buffer, for GNU.
   Copyright 1993, 1994, 1996, 1997, 1998, 1999, 2000
   Free Software Foundation, Inc.

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 "sysdep.h"
#include "dis-asm.h"
#include <errno.h>
#include "opintl.h"

/* Get LENGTH bytes from info's buffer, at target address memaddr.
   Transfer them to myaddr.  */
int
buffer_read_memory (memaddr, myaddr, length, info)
     bfd_vma memaddr;
     bfd_byte *myaddr;
     unsigned int length;
     struct disassemble_info *info;
{
  unsigned int opb = info->octets_per_byte;
  unsigned int end_addr_offset = length / opb;
  unsigned int max_addr_offset = info->buffer_length / opb; 
  unsigned int octets = (memaddr - info->buffer_vma) * opb;

  if (memaddr < info->buffer_vma
      || memaddr - info->buffer_vma + end_addr_offset > max_addr_offset)
    /* Out of bounds.  Use EIO because GDB uses it.  */
    return EIO;
  memcpy (myaddr, info->buffer + octets, length);

  return 0;
}