1/* $NetBSD: exec_ecoff.c,v 1.7 2016/09/21 16:27:55 christos Exp $ */ 2 3/* 4 * Copyright (c) 1996 Christopher G. Demetriou 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 * 29 * <<Id: LICENSE_GC,v 1.1 2001/10/01 23:24:05 cgd Exp>> 30 */ 31 32#include <sys/cdefs.h> 33#ifndef lint 34__RCSID("$NetBSD: exec_ecoff.c,v 1.7 2016/09/21 16:27:55 christos Exp $"); 35#endif /* not lint */ 36 37#include <sys/types.h> 38#include <stdio.h> 39#include <string.h> 40#include "extern.h" 41 42#if defined(NLIST_ECOFF) 43#include <sys/exec_ecoff.h> 44 45#define check(off, size) ((off < 0) || (off + size > mappedsize)) 46#define BAD do { rv = -1; goto out; } while (0) 47 48int 49check_ecoff(const char *mappedfile, size_t mappedsize) 50{ 51 const struct ecoff_exechdr *exechdrp; 52 int rv; 53 54 rv = 0; 55 56 if (check(0, sizeof *exechdrp)) 57 BAD; 58 exechdrp = (const struct ecoff_exechdr *)&mappedfile[0]; 59 60 if (ECOFF_BADMAG(exechdrp)) 61 BAD; 62 63out: 64 return (rv); 65} 66 67int 68findoff_ecoff(const char *mappedfile, size_t mappedsize, u_long vmaddr, 69 size_t *fileoffp, u_long text_address) 70{ 71 const struct ecoff_exechdr *exechdrp; 72 int rv; 73 74 rv = 0; 75 exechdrp = (const struct ecoff_exechdr *)&mappedfile[0]; 76 77 if (exechdrp->a.text_start <= vmaddr && 78 vmaddr < (exechdrp->a.text_start + exechdrp->a.tsize)) 79 *fileoffp = vmaddr - exechdrp->a.text_start + 80 ECOFF_TXTOFF(exechdrp); 81 else if (exechdrp->a.data_start <= vmaddr && 82 vmaddr < (exechdrp->a.data_start + exechdrp->a.dsize)) 83 *fileoffp = vmaddr - exechdrp->a.data_start + 84 ECOFF_DATOFF(exechdrp); 85 else 86 BAD; 87 88out: 89 return (rv); 90} 91 92#endif /* NLIST_ECOFF */ 93