1 /* $NetBSD: aout_machdep.c,v 1.1 2008/11/20 10:53:09 ad Exp $ */ 2 3 /*- 4 * Copyright (c) 1996, 1997, 1998, 2000, 2004, 2006, 2008 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Charles M. Hannum, by Jason R. Thorpe of the Numerical Aerospace 9 * Simulation Facility, NASA Ames Research Center and by Julio M. Merino Vidal. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 /*- 34 * Copyright (c) 1982, 1987, 1990 The Regents of the University of California. 35 * All rights reserved. 36 * 37 * This code is derived from software contributed to Berkeley by 38 * William Jolitz. 39 * 40 * Redistribution and use in source and binary forms, with or without 41 * modification, are permitted provided that the following conditions 42 * are met: 43 * 1. Redistributions of source code must retain the above copyright 44 * notice, this list of conditions and the following disclaimer. 45 * 2. Redistributions in binary form must reproduce the above copyright 46 * notice, this list of conditions and the following disclaimer in the 47 * documentation and/or other materials provided with the distribution. 48 * 3. Neither the name of the University nor the names of its contributors 49 * may be used to endorse or promote products derived from this software 50 * without specific prior written permission. 51 * 52 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 53 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 54 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 55 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 56 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 57 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 58 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 59 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 60 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 61 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 62 * SUCH DAMAGE. 63 * 64 * @(#)machdep.c 7.4 (Berkeley) 6/3/91 65 */ 66 67 #include <sys/cdefs.h> 68 __KERNEL_RCSID(0, "$NetBSD: aout_machdep.c,v 1.1 2008/11/20 10:53:09 ad Exp $"); 69 70 #ifdef _KERNEL_OPT 71 #include "opt_compat_netbsd.h" 72 #endif 73 74 #include <sys/param.h> 75 #include <sys/systm.h> 76 #include <sys/exec.h> 77 #include <sys/exec_aout.h> 78 79 #ifdef COMPAT_NOMID 80 static int 81 exec_nomid(struct lwp *l, struct exec_package *epp) 82 { 83 int error; 84 u_long midmag, magic; 85 u_short mid; 86 struct exec *execp = epp->ep_hdr; 87 88 /* check on validity of epp->ep_hdr performed by exec_out_makecmds */ 89 90 midmag = ntohl(execp->a_midmag); 91 mid = (midmag >> 16) & 0xffff; 92 magic = midmag & 0xffff; 93 94 if (magic == 0) { 95 magic = (execp->a_midmag & 0xffff); 96 mid = MID_ZERO; 97 } 98 99 midmag = mid << 16 | magic; 100 101 switch (midmag) { 102 case (MID_ZERO << 16) | ZMAGIC: 103 /* 104 * 386BSD's ZMAGIC format: 105 */ 106 error = exec_aout_prep_oldzmagic(l, epp); 107 break; 108 109 case (MID_ZERO << 16) | QMAGIC: 110 /* 111 * BSDI's QMAGIC format: 112 * same as new ZMAGIC format, but with different magic number 113 */ 114 error = exec_aout_prep_zmagic(l, epp); 115 break; 116 117 case (MID_ZERO << 16) | NMAGIC: 118 /* 119 * BSDI's NMAGIC format: 120 * same as NMAGIC format, but with different magic number 121 * and with text starting at 0. 122 */ 123 error = exec_aout_prep_oldnmagic(l, epp); 124 break; 125 126 case (MID_ZERO << 16) | OMAGIC: 127 /* 128 * BSDI's OMAGIC format: 129 * same as OMAGIC format, but with different magic number 130 * and with text starting at 0. 131 */ 132 error = exec_aout_prep_oldomagic(l, epp); 133 break; 134 135 default: 136 error = ENOEXEC; 137 } 138 139 return error; 140 } 141 #endif 142 143 /* 144 * cpu_exec_aout_makecmds(): 145 * CPU-dependent a.out format hook for execve(). 146 * 147 * Determine of the given exec package refers to something which we 148 * understand and, if so, set up the vmcmds for it. 149 * 150 * On the i386, old (386bsd) ZMAGIC binaries and BSDI QMAGIC binaries 151 * if COMPAT_NOMID is given as a kernel option. 152 */ 153 int 154 cpu_exec_aout_makecmds(struct lwp *l, struct exec_package *epp) 155 { 156 int error = ENOEXEC; 157 158 #ifdef COMPAT_NOMID 159 if ((error = exec_nomid(l, epp)) == 0) 160 return error; 161 #else 162 (void) l; 163 (void) epp; 164 #endif /* ! COMPAT_NOMID */ 165 166 return error; 167 } 168
Indexes created Sun Oct 25 00:26:45 UTC 2026