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