1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/src/x86dasm/dis-buf.c	Mon Jan 28 02:38:09 2008 +0000
     1.3 @@ -0,0 +1,132 @@
     1.4 +/* Disassemble from a buffer, for GNU.
     1.5 +   Copyright 1993, 1994, 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2005
     1.6 +   Free Software Foundation, Inc.
     1.7 +
     1.8 +This program is free software; you can redistribute it and/or modify
     1.9 +it under the terms of the GNU General Public License as published by
    1.10 +the Free Software Foundation; either version 2 of the License, or
    1.11 +(at your option) any later version.
    1.12 +
    1.13 +This program is distributed in the hope that it will be useful,
    1.14 +but WITHOUT ANY WARRANTY; without even the implied warranty of
    1.15 +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    1.16 +GNU General Public License for more details.
    1.17 +
    1.18 +You should have received a copy of the GNU General Public License
    1.19 +along with this program; if not, write to the Free Software
    1.20 +Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
    1.21 +
    1.22 +#include "sysdep.h"
    1.23 +#include "dis-asm.h"
    1.24 +#include <errno.h>
    1.25 +#include "opintl.h"
    1.26 +
    1.27 +/* Get LENGTH bytes from info's buffer, at target address memaddr.
    1.28 +   Transfer them to myaddr.  */
    1.29 +int
    1.30 +buffer_read_memory (memaddr, myaddr, length, info)
    1.31 +     bfd_vma memaddr;
    1.32 +     bfd_byte *myaddr;
    1.33 +     unsigned int length;
    1.34 +     struct disassemble_info *info;
    1.35 +{
    1.36 +  unsigned int opb = info->octets_per_byte;
    1.37 +  unsigned int end_addr_offset = length / opb;
    1.38 +  unsigned int max_addr_offset = info->buffer_length / opb; 
    1.39 +  unsigned int octets = (memaddr - info->buffer_vma) * opb;
    1.40 +
    1.41 +  if (memaddr < info->buffer_vma
    1.42 +      || memaddr - info->buffer_vma + end_addr_offset > max_addr_offset)
    1.43 +    /* Out of bounds.  Use EIO because GDB uses it.  */
    1.44 +    return EIO;
    1.45 +  memcpy (myaddr, info->buffer + octets, length);
    1.46 +
    1.47 +  return 0;
    1.48 +}
    1.49 +
    1.50 +/* Print an error message.  We can assume that this is in response to
    1.51 +   an error return from buffer_read_memory.  */
    1.52 +void
    1.53 +perror_memory (status, memaddr, info)
    1.54 +     int status;
    1.55 +     bfd_vma memaddr;
    1.56 +     struct disassemble_info *info;
    1.57 +{
    1.58 +  if (status != EIO)
    1.59 +    /* Can't happen.  */
    1.60 +    info->fprintf_func (info->stream, _("Unknown error %d\n"), status);
    1.61 +  else
    1.62 +    {
    1.63 +      char buf[30];
    1.64 +
    1.65 +      /* Actually, address between memaddr and memaddr + len was
    1.66 +	 out of bounds.  */
    1.67 +      sprintf_vma (buf, memaddr);
    1.68 +      info->fprintf_func (info->stream,
    1.69 +			  _("Address 0x%s is out of bounds.\n"), buf);
    1.70 +    }
    1.71 +}
    1.72 +
    1.73 +/* This could be in a separate file, to save miniscule amounts of space
    1.74 +   in statically linked executables.  */
    1.75 +
    1.76 +/* Just print the address is hex.  This is included for completeness even
    1.77 +   though both GDB and objdump provide their own (to print symbolic
    1.78 +   addresses).  */
    1.79 +
    1.80 +void
    1.81 +generic_print_address (addr, info)
    1.82 +     bfd_vma addr;
    1.83 +     struct disassemble_info *info;
    1.84 +{
    1.85 +  char buf[30];
    1.86 +
    1.87 +  sprintf_vma (buf, addr);
    1.88 +  (*info->fprintf_func) (info->stream, "0x%s", buf);
    1.89 +}
    1.90 +
    1.91 +#if 0
    1.92 +/* Just concatenate the address as hex.  This is included for
    1.93 +   completeness even though both GDB and objdump provide their own (to
    1.94 +   print symbolic addresses).  */
    1.95 +
    1.96 +void generic_strcat_address PARAMS ((bfd_vma, char *, int));
    1.97 +
    1.98 +void
    1.99 +generic_strcat_address (addr, buf, len)
   1.100 +     bfd_vma addr;
   1.101 +     char *buf;
   1.102 +     int len;
   1.103 +{
   1.104 +  if (buf != (char *)NULL && len > 0)
   1.105 +    {
   1.106 +      char tmpBuf[30];
   1.107 +
   1.108 +      sprintf_vma (tmpBuf, addr);
   1.109 +      if ((strlen (buf) + strlen (tmpBuf)) <= (unsigned int) len)
   1.110 +	strcat (buf, tmpBuf);
   1.111 +      else
   1.112 +	strncat (buf, tmpBuf, (len - strlen(buf)));
   1.113 +    }
   1.114 +  return;
   1.115 +}
   1.116 +#endif
   1.117 +
   1.118 +/* Just return true.  */
   1.119 +
   1.120 +int
   1.121 +generic_symbol_at_address (addr, info)
   1.122 +     bfd_vma addr ATTRIBUTE_UNUSED;
   1.123 +     struct disassemble_info *info ATTRIBUTE_UNUSED;
   1.124 +{
   1.125 +  return 1;
   1.126 +}
   1.127 +
   1.128 +/* Just return TRUE.  */
   1.129 +
   1.130 +bfd_boolean
   1.131 +generic_symbol_is_valid (asymbol * sym ATTRIBUTE_UNUSED,
   1.132 +			 struct disassemble_info *info ATTRIBUTE_UNUSED)
   1.133 +{
   1.134 +  return TRUE;
   1.135 +}