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exec_ecoff.c revision 1.6
      1  1.6  tsutsui /* $NetBSD: exec_ecoff.c,v 1.6 2009/07/30 15:16:37 tsutsui Exp $ */
      2  1.1      cgd 
      3  1.1      cgd /*
      4  1.4      cgd  * Copyright (c) 1996 Christopher G. Demetriou
      5  1.4      cgd  * All rights reserved.
      6  1.4      cgd  *
      7  1.1      cgd  * Redistribution and use in source and binary forms, with or without
      8  1.1      cgd  * modification, are permitted provided that the following conditions
      9  1.1      cgd  * are met:
     10  1.1      cgd  * 1. Redistributions of source code must retain the above copyright
     11  1.1      cgd  *    notice, this list of conditions and the following disclaimer.
     12  1.1      cgd  * 2. Redistributions in binary form must reproduce the above copyright
     13  1.1      cgd  *    notice, this list of conditions and the following disclaimer in the
     14  1.1      cgd  *    documentation and/or other materials provided with the distribution.
     15  1.5      cgd  * 3. The name of the author may not be used to endorse or promote products
     16  1.4      cgd  *    derived from this software without specific prior written permission.
     17  1.4      cgd  *
     18  1.1      cgd  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     19  1.1      cgd  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     20  1.1      cgd  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     21  1.1      cgd  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     22  1.1      cgd  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     23  1.1      cgd  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     24  1.1      cgd  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     25  1.1      cgd  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     26  1.1      cgd  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     27  1.1      cgd  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     28  1.4      cgd  *
     29  1.5      cgd  * <<Id: LICENSE_GC,v 1.1 2001/10/01 23:24:05 cgd Exp>>
     30  1.1      cgd  */
     31  1.1      cgd 
     32  1.2    lukem #include <sys/cdefs.h>
     33  1.1      cgd #ifndef lint
     34  1.6  tsutsui __RCSID("$NetBSD: exec_ecoff.c,v 1.6 2009/07/30 15:16:37 tsutsui Exp $");
     35  1.1      cgd #endif /* not lint */
     36  1.1      cgd 
     37  1.1      cgd #include <sys/types.h>
     38  1.1      cgd #include <stdio.h>
     39  1.1      cgd #include <string.h>
     40  1.1      cgd #include "extern.h"
     41  1.1      cgd 
     42  1.1      cgd #if defined(NLIST_ECOFF)
     43  1.1      cgd #include <sys/exec_ecoff.h>
     44  1.1      cgd 
     45  1.1      cgd #define	check(off, size)	((off < 0) || (off + size > mappedsize))
     46  1.1      cgd #define	BAD			do { rv = -1; goto out; } while (0)
     47  1.1      cgd 
     48  1.1      cgd int
     49  1.1      cgd check_ecoff(mappedfile, mappedsize)
     50  1.1      cgd 	const char *mappedfile;
     51  1.1      cgd 	size_t mappedsize;
     52  1.1      cgd {
     53  1.6  tsutsui 	const struct ecoff_exechdr *exechdrp;
     54  1.1      cgd 	int rv;
     55  1.1      cgd 
     56  1.1      cgd 	rv = 0;
     57  1.1      cgd 
     58  1.1      cgd 	if (check(0, sizeof *exechdrp))
     59  1.1      cgd 		BAD;
     60  1.6  tsutsui 	exechdrp = (const struct ecoff_exechdr *)&mappedfile[0];
     61  1.1      cgd 
     62  1.1      cgd 	if (ECOFF_BADMAG(exechdrp))
     63  1.1      cgd 		BAD;
     64  1.1      cgd 
     65  1.1      cgd out:
     66  1.1      cgd 	return (rv);
     67  1.1      cgd }
     68  1.1      cgd 
     69  1.1      cgd int
     70  1.1      cgd findoff_ecoff(mappedfile, mappedsize, vmaddr, fileoffp)
     71  1.1      cgd 	const char *mappedfile;
     72  1.1      cgd 	size_t mappedsize, *fileoffp;
     73  1.1      cgd 	u_long vmaddr;
     74  1.1      cgd {
     75  1.6  tsutsui 	const struct ecoff_exechdr *exechdrp;
     76  1.1      cgd 	int rv;
     77  1.1      cgd 
     78  1.1      cgd 	rv = 0;
     79  1.6  tsutsui 	exechdrp = (const struct ecoff_exechdr *)&mappedfile[0];
     80  1.1      cgd 
     81  1.1      cgd 	if (exechdrp->a.text_start <= vmaddr &&
     82  1.1      cgd 	    vmaddr < (exechdrp->a.text_start + exechdrp->a.tsize))
     83  1.1      cgd 		*fileoffp = vmaddr - exechdrp->a.text_start +
     84  1.1      cgd 		    ECOFF_TXTOFF(exechdrp);
     85  1.1      cgd 	else if (exechdrp->a.data_start <= vmaddr &&
     86  1.1      cgd             vmaddr < (exechdrp->a.data_start + exechdrp->a.dsize))
     87  1.1      cgd 		*fileoffp = vmaddr - exechdrp->a.data_start +
     88  1.1      cgd 		    ECOFF_DATOFF(exechdrp);
     89  1.1      cgd 	else
     90  1.1      cgd 		BAD;
     91  1.1      cgd 
     92  1.1      cgd out:
     93  1.1      cgd 	return (rv);
     94  1.1      cgd }
     95  1.1      cgd 
     96  1.1      cgd #endif /* NLIST_ECOFF */
     97