Archipelago » qemu

/* Disassemble from a buffer, for GNU.

   Copyright (C) 1993, 1994 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 "dis-asm.h"

#include <errno.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;

     int length;

     struct disassemble_info *info;

{

  if (memaddr < info->buffer_vma

      || memaddr + length > info->buffer_vma + info->buffer_length)

    /* Out of bounds.  Use EIO because GDB uses it.  */

    return EIO;

  memcpy (myaddr, info->buffer + (memaddr - info->buffer_vma), length);

  return 0;

}

/* Print an error message.  We can assume that this is in response to

   an error return from buffer_read_memory.  */

void

perror_memory (status, memaddr, info)

     int status;

     bfd_vma memaddr;

     struct disassemble_info *info;

{

  if (status != EIO)

    /* Can't happen.  */

    (*info->fprintf_func) (info->stream, "Unknown error %d\n", status);

  else

    /* Actually, address between memaddr and memaddr + len was

       out of bounds.  */

    (*info->fprintf_func) (info->stream,

                           "Address 0x%x is out of bounds.\n", memaddr);

}

/* This could be in a separate file, to save miniscule amounts of space

   in statically linked executables.  */

/* Just print the address is hex.  This is included for completeness even

   though both GDB and objdump provide their own (to print symbolic

   addresses).  */

void

generic_print_address (addr, info)

     bfd_vma addr;

     struct disassemble_info *info;

{

  (*info->fprintf_func) (info->stream, "0x%x", addr);

}

/* Just return the given address.  */

int

generic_symbol_at_address (addr, info)

     bfd_vma addr;

     struct disassemble_info * info;

{

  return 1;

}