1/* 2 * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved. 3 * 4 * @APPLE_LICENSE_HEADER_START@ 5 * 6 * The contents of this file constitute Original Code as defined in and 7 * are subject to the Apple Public Source License Version 1.1 (the 8 * "License"). You may not use this file except in compliance with the 9 * License. Please obtain a copy of the License at 10 * http://www.apple.com/publicsource and read it before using this file. 11 * 12 * This Original Code and all software distributed under the License are 13 * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER 14 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 15 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the 17 * License for the specific language governing rights and limitations 18 * under the License. 19 * 20 * @APPLE_LICENSE_HEADER_END@ 21 */ 22/*- 23 * Copyright (c) 1992, 1993 24 * The Regents of the University of California. All rights reserved. 25 * 26 * Redistribution and use in source and binary forms, with or without 27 * modification, are permitted provided that the following conditions 28 * are met: 29 * 1. Redistributions of source code must retain the above copyright 30 * notice, this list of conditions and the following disclaimer. 31 * 2. Redistributions in binary form must reproduce the above copyright 32 * notice, this list of conditions and the following disclaimer in the 33 * documentation and/or other materials provided with the distribution. 34 * 3. All advertising materials mentioning features or use of this software 35 * must display the following acknowledgement: 36 * This product includes software developed by the University of 37 * California, Berkeley and its contributors. 38 * 4. Neither the name of the University nor the names of its contributors 39 * may be used to endorse or promote products derived from this software 40 * without specific prior written permission. 41 * 42 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 43 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 44 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 45 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 46 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 47 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 48 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 49 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 50 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 51 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 52 * SUCH DAMAGE. 53 * 54 * @(#)exec.h 8.1 (Berkeley) 6/11/93 55 */ 56 57#ifndef _BSD_I386_EXEC_H_ 58#define _BSD_I386_EXEC_H_ 59 60 61#ifdef BSD_KERNEL_PRIVATE 62/* Size of a page in an object file. */ 63#define __LDPGSZ 4096 64 65/* Valid magic number check. */ 66#define N_BADMAG(ex) \ 67 ((ex).a_magic != NMAGIC && (ex).a_magic != OMAGIC && \ 68 (ex).a_magic != ZMAGIC) 69 70/* Address of the bottom of the text segment. */ 71#define N_TXTADDR(X) 0 72 73/* Address of the bottom of the data segment. */ 74#define N_DATADDR(ex) \ 75 (N_TXTADDR(ex) + ((ex).a_magic == OMAGIC ? (ex).a_text \ 76 : __LDPGSZ + ((ex).a_text - 1 & ~(__LDPGSZ - 1)))) 77 78/* Text segment offset. */ 79#define N_TXTOFF(ex) \ 80 ((ex).a_magic == ZMAGIC ? __LDPGSZ : sizeof(struct exec)) 81 82/* Data segment offset. */ 83#define N_DATOFF(ex) \ 84 (N_TXTOFF(ex) + ((ex).a_magic != ZMAGIC ? (ex).a_text : \ 85 __LDPGSZ + ((ex).a_text - 1 & ~(__LDPGSZ - 1)))) 86 87/* Symbol table offset. */ 88#define N_SYMOFF(ex) \ 89 (N_TXTOFF(ex) + (ex).a_text + (ex).a_data + (ex).a_trsize + \ 90 (ex).a_drsize) 91 92/* String table offset. */ 93#define N_STROFF(ex) (N_SYMOFF(ex) + (ex).a_syms) 94 95/* Description of the object file header (a.out format). */ 96struct exec { 97#define OMAGIC 0407 /* old impure format */ 98#define NMAGIC 0410 /* read-only text */ 99#define ZMAGIC 0413 /* demand load format */ 100#define QMAGIC 0314 /* demand load format. Header in text. */ 101 unsigned int a_magic; /* magic number */ 102 103 unsigned int a_text; /* text segment size */ 104 unsigned int a_data; /* initialized data size */ 105 unsigned int a_bss; /* uninitialized data size */ 106 unsigned int a_syms; /* symbol table size */ 107 unsigned int a_entry; /* entry point */ 108 unsigned int a_trsize; /* text relocation size */ 109 unsigned int a_drsize; /* data relocation size */ 110}; 111 112#endif /* BSD_KERNEL_PRIVATE */ 113 114#endif /* _BSD_I386_EXEC_H_ */ 115