1 /* $NetBSD: exec_coff.c,v 1.1 1999/09/12 16:08:14 itojun Exp $ */ 2 3 /* 4 * Copyright (c) 1996 Christopher G. Demetriou. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by Christopher G. Demetriou 17 * for the NetBSD Project. 18 * 4. The name of the author may not be used to endorse or promote products 19 * derived from this software without specific prior written permission 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 #include <sys/cdefs.h> 34 #ifndef lint 35 __RCSID("$NetBSD: exec_coff.c,v 1.1 1999/09/12 16:08:14 itojun Exp $"); 36 #endif /* not lint */ 37 38 #include <sys/param.h> 39 #include <sys/time.h> 40 #include <sys/proc.h> 41 #include <sys/types.h> 42 #include <stdio.h> 43 #include <string.h> 44 #include "extern.h" 45 46 #if defined(NLIST_COFF) 47 #include <machine/exec_coff.h> /* XXX sys/exec_coff.h? */ 48 49 #define check(off, size) ((off < 0) || (off + size > mappedsize)) 50 #define BAD do { rv = -1; goto out; } while (0) 51 52 int 53 check_coff(mappedfile, mappedsize) 54 const char *mappedfile; 55 size_t mappedsize; 56 { 57 struct coff_exechdr *exechdrp; 58 int rv; 59 60 rv = 0; 61 62 if (check(0, sizeof *exechdrp)) 63 BAD; 64 exechdrp = (struct coff_exechdr *)&mappedfile[0]; 65 66 if (COFF_BADMAG(&(exechdrp->f))) 67 BAD; 68 69 out: 70 return (rv); 71 } 72 73 int 74 findoff_coff(mappedfile, mappedsize, vmaddr, fileoffp) 75 const char *mappedfile; 76 size_t mappedsize, *fileoffp; 77 u_long vmaddr; 78 { 79 struct coff_exechdr *exechdrp; 80 int rv; 81 82 rv = 0; 83 exechdrp = (struct coff_exechdr *)&mappedfile[0]; 84 85 #define COFF_TXTOFF_XXX(fp, ap) \ 86 (COFF_ROUND(COFF_HDR_SIZE + (fp)->f_nscns * \ 87 sizeof(struct coff_scnhdr), \ 88 COFF_SEGMENT_ALIGNMENT(fp, ap))) 89 90 #define COFF_DATOFF_XXX(fp, ap) \ 91 (COFF_TXTOFF_XXX(fp, ap) + (ap)->a_tsize) 92 93 if (exechdrp->a.a_tstart <= vmaddr && 94 vmaddr < (exechdrp->a.a_tstart + exechdrp->a.a_tsize)) 95 *fileoffp = vmaddr - exechdrp->a.a_tstart + 96 COFF_TXTOFF(&exechdrp->f, &(exechdrp->a)); 97 else if (exechdrp->a.a_dstart <= vmaddr && 98 vmaddr < (exechdrp->a.a_dstart + exechdrp->a.a_dsize)) 99 *fileoffp = vmaddr - exechdrp->a.a_dstart + 100 COFF_DATOFF_XXX(&exechdrp->f, &(exechdrp->a)); 101 else 102 BAD; 103 104 out: 105 return (rv); 106 } 107 108 #endif /* NLIST_COFF */ 109