NetBSD/usr.sbin/rdsetimage/exec_ecoff.c

97 lines
3.0 KiB
C

/* $NetBSD: exec_ecoff.c,v 1.1 1996/10/04 00:18:56 cgd Exp $ */
/*
* Copyright (c) 1996 Christopher G. Demetriou. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Christopher G. Demetriou
* for the NetBSD Project.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef lint
static char *rcsid = "$NetBSD: exec_ecoff.c,v 1.1 1996/10/04 00:18:56 cgd Exp $";
#endif /* not lint */
#include <sys/types.h>
#include <stdio.h>
#include <string.h>
#include "extern.h"
#if defined(NLIST_ECOFF)
#include <sys/exec_ecoff.h>
#define check(off, size) ((off < 0) || (off + size > mappedsize))
#define BAD do { rv = -1; goto out; } while (0)
int
check_ecoff(mappedfile, mappedsize)
const char *mappedfile;
size_t mappedsize;
{
struct ecoff_exechdr *exechdrp;
int rv;
rv = 0;
if (check(0, sizeof *exechdrp))
BAD;
exechdrp = (struct ecoff_exechdr *)&mappedfile[0];
if (ECOFF_BADMAG(exechdrp))
BAD;
out:
return (rv);
}
int
findoff_ecoff(mappedfile, mappedsize, vmaddr, fileoffp)
const char *mappedfile;
size_t mappedsize, *fileoffp;
u_long vmaddr;
{
struct ecoff_exechdr *exechdrp;
int rv;
rv = 0;
exechdrp = (struct ecoff_exechdr *)&mappedfile[0];
if (exechdrp->a.text_start <= vmaddr &&
vmaddr < (exechdrp->a.text_start + exechdrp->a.tsize))
*fileoffp = vmaddr - exechdrp->a.text_start +
ECOFF_TXTOFF(exechdrp);
else if (exechdrp->a.data_start <= vmaddr &&
vmaddr < (exechdrp->a.data_start + exechdrp->a.dsize))
*fileoffp = vmaddr - exechdrp->a.data_start +
ECOFF_DATOFF(exechdrp);
else
BAD;
out:
return (rv);
}
#endif /* NLIST_ECOFF */