1/* 2 * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved. 3 * 4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5 * 6 * This file contains Original Code and/or Modifications of Original Code 7 * as defined in and that are subject to the Apple Public Source License 8 * Version 2.0 (the 'License'). You may not use this file except in 9 * compliance with the License. The rights granted to you under the License 10 * may not be used to create, or enable the creation or redistribution of, 11 * unlawful or unlicensed copies of an Apple operating system, or to 12 * circumvent, violate, or enable the circumvention or violation of, any 13 * terms of an Apple operating system software license agreement. 14 * 15 * Please obtain a copy of the License at 16 * http://www.opensource.apple.com/apsl/ and read it before using this file. 17 * 18 * The Original Code and all software distributed under the License are 19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23 * Please see the License for the specific language governing rights and 24 * limitations under the License. 25 * 26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27 */ 28/*- 29 * Copyright (c) 1992, 1993 30 * The Regents of the University of California. All rights reserved. 31 * 32 * Redistribution and use in source and binary forms, with or without 33 * modification, are permitted provided that the following conditions 34 * are met: 35 * 1. Redistributions of source code must retain the above copyright 36 * notice, this list of conditions and the following disclaimer. 37 * 2. Redistributions in binary form must reproduce the above copyright 38 * notice, this list of conditions and the following disclaimer in the 39 * documentation and/or other materials provided with the distribution. 40 * 3. All advertising materials mentioning features or use of this software 41 * must display the following acknowledgement: 42 * This product includes software developed by the University of 43 * California, Berkeley and its contributors. 44 * 4. Neither the name of the University nor the names of its contributors 45 * may be used to endorse or promote products derived from this software 46 * without specific prior written permission. 47 * 48 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 49 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 50 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 51 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 52 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 53 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 54 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 55 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 56 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 57 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 58 * SUCH DAMAGE. 59 * 60 * @(#)exec.h 8.1 (Berkeley) 6/11/93 61 */ 62 63#ifndef _BSD_I386_EXEC_H_ 64#define _BSD_I386_EXEC_H_ 65 66 67#ifdef BSD_KERNEL_PRIVATE 68/* Size of a page in an object file. */ 69#define __LDPGSZ 4096 70 71/* Valid magic number check. */ 72#define N_BADMAG(ex) \ 73 ((ex).a_magic != NMAGIC && (ex).a_magic != OMAGIC && \ 74 (ex).a_magic != ZMAGIC) 75 76/* Address of the bottom of the text segment. */ 77#define N_TXTADDR(X) 0 78 79/* Address of the bottom of the data segment. */ 80#define N_DATADDR(ex) \ 81 (N_TXTADDR(ex) + ((ex).a_magic == OMAGIC ? (ex).a_text \ 82 : __LDPGSZ + ((ex).a_text - 1 & ~(__LDPGSZ - 1)))) 83 84/* Text segment offset. */ 85#define N_TXTOFF(ex) \ 86 ((ex).a_magic == ZMAGIC ? __LDPGSZ : sizeof(struct exec)) 87 88/* Data segment offset. */ 89#define N_DATOFF(ex) \ 90 (N_TXTOFF(ex) + ((ex).a_magic != ZMAGIC ? (ex).a_text : \ 91 __LDPGSZ + ((ex).a_text - 1 & ~(__LDPGSZ - 1)))) 92 93/* Symbol table offset. */ 94#define N_SYMOFF(ex) \ 95 (N_TXTOFF(ex) + (ex).a_text + (ex).a_data + (ex).a_trsize + \ 96 (ex).a_drsize) 97 98/* String table offset. */ 99#define N_STROFF(ex) (N_SYMOFF(ex) + (ex).a_syms) 100 101/* Description of the object file header (a.out format). */ 102struct exec { 103#define OMAGIC 0407 /* old impure format */ 104#define NMAGIC 0410 /* read-only text */ 105#define ZMAGIC 0413 /* demand load format */ 106#define QMAGIC 0314 /* demand load format. Header in text. */ 107 unsigned int a_magic; /* magic number */ 108 109 unsigned int a_text; /* text segment size */ 110 unsigned int a_data; /* initialized data size */ 111 unsigned int a_bss; /* uninitialized data size */ 112 unsigned int a_syms; /* symbol table size */ 113 unsigned int a_entry; /* entry point */ 114 unsigned int a_trsize; /* text relocation size */ 115 unsigned int a_drsize; /* data relocation size */ 116}; 117 118#endif /* BSD_KERNEL_PRIVATE */ 119 120#endif /* _BSD_I386_EXEC_H_ */ 121