1 /* $NetBSD: exec_coff.c,v 1.4 2000/06/14 17:26:14 cgd 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. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed for the 18 * NetBSD Project. See http://www.netbsd.org/ for 19 * information about NetBSD. 20 * 4. The name of the author may not be used to endorse or promote products 21 * derived from this software without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 24 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 25 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 26 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 27 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 28 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 29 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 30 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 31 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 32 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 33 * 34 * <<Id: LICENSE,v 1.2 2000/06/14 15:57:33 cgd Exp>> 35 */ 36 37 #include <sys/cdefs.h> 38 #ifndef lint 39 __RCSID("$NetBSD: exec_coff.c,v 1.4 2000/06/14 17:26:14 cgd Exp $"); 40 #endif /* not lint */ 41 42 #include <sys/param.h> 43 #include <sys/time.h> 44 #include <sys/proc.h> 45 #include <sys/types.h> 46 #include <stdio.h> 47 #include <string.h> 48 #include "extern.h" 49 50 #if defined(NLIST_COFF) 51 #include <sys/exec_coff.h> 52 53 #define check(off, size) ((off < 0) || (off + size > mappedsize)) 54 #define BAD do { rv = -1; goto out; } while (0) 55 56 int 57 check_coff(mappedfile, mappedsize) 58 const char *mappedfile; 59 size_t mappedsize; 60 { 61 struct coff_exechdr *exechdrp; 62 int rv; 63 64 rv = 0; 65 66 if (check(0, sizeof *exechdrp)) 67 BAD; 68 exechdrp = (struct coff_exechdr *)&mappedfile[0]; 69 70 if (COFF_BADMAG(&(exechdrp->f))) 71 BAD; 72 73 out: 74 return (rv); 75 } 76 77 int 78 findoff_coff(mappedfile, mappedsize, vmaddr, fileoffp) 79 const char *mappedfile; 80 size_t mappedsize, *fileoffp; 81 u_long vmaddr; 82 { 83 struct coff_exechdr *exechdrp; 84 int rv; 85 86 rv = 0; 87 exechdrp = (struct coff_exechdr *)&mappedfile[0]; 88 89 #define COFF_TXTOFF_XXX(fp, ap) \ 90 (COFF_ROUND(COFF_HDR_SIZE + (fp)->f_nscns * \ 91 sizeof(struct coff_scnhdr), \ 92 COFF_SEGMENT_ALIGNMENT(fp, ap))) 93 94 #define COFF_DATOFF_XXX(fp, ap) \ 95 (COFF_TXTOFF_XXX(fp, ap) + (ap)->a_tsize) 96 97 if (exechdrp->a.a_tstart <= vmaddr && 98 vmaddr < (exechdrp->a.a_tstart + exechdrp->a.a_tsize)) 99 *fileoffp = vmaddr - exechdrp->a.a_tstart + 100 COFF_TXTOFF(&exechdrp->f, &(exechdrp->a)); 101 else if (exechdrp->a.a_dstart <= vmaddr && 102 vmaddr < (exechdrp->a.a_dstart + exechdrp->a.a_dsize)) 103 *fileoffp = vmaddr - exechdrp->a.a_dstart + 104 COFF_DATOFF_XXX(&exechdrp->f, &(exechdrp->a)); 105 else 106 BAD; 107 108 out: 109 return (rv); 110 } 111 112 #endif /* NLIST_COFF */ 113