projects / apple / xnu.git / blame
| Commit | Line | Data |
|---|---|---|
| 1c79356b A |
1 | /* |
| 2 | * Copyright (c) 2000 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 | /* Size of a page in an object file. */ | |
| 58 | #define __LDPGSZ 4096 | |
| 59 | ||
| 60 | /* Valid magic number check. */ | |
| 61 | #define N_BADMAG(ex) \ | |
| 62 | ((ex).a_magic != NMAGIC && (ex).a_magic != OMAGIC && \ | |
| 63 | (ex).a_magic != ZMAGIC) | |
| 64 | ||
| 65 | /* Address of the bottom of the text segment. */ | |
| 66 | #define N_TXTADDR(X) 0 | |
| 67 | ||
| 68 | /* Address of the bottom of the data segment. */ | |
| 69 | #define N_DATADDR(ex) \ | |
| 70 | (N_TXTADDR(ex) + ((ex).a_magic == OMAGIC ? (ex).a_text \ | |
| 71 | : __LDPGSZ + ((ex).a_text - 1 & ~(__LDPGSZ - 1)))) | |
| 72 | ||
| 73 | /* Text segment offset. */ | |
| 74 | #define N_TXTOFF(ex) \ | |
| 75 | ((ex).a_magic == ZMAGIC ? __LDPGSZ : sizeof(struct exec)) | |
| 76 | ||
| 77 | /* Data segment offset. */ | |
| 78 | #define N_DATOFF(ex) \ | |
| 79 | (N_TXTOFF(ex) + ((ex).a_magic != ZMAGIC ? (ex).a_text : \ | |
| 80 | __LDPGSZ + ((ex).a_text - 1 & ~(__LDPGSZ - 1)))) | |
| 81 | ||
| 82 | /* Symbol table offset. */ | |
| 83 | #define N_SYMOFF(ex) \ | |
| 84 | (N_TXTOFF(ex) + (ex).a_text + (ex).a_data + (ex).a_trsize + \ | |
| 85 | (ex).a_drsize) | |
| 86 | ||
| 87 | /* String table offset. */ | |
| 88 | #define N_STROFF(ex) (N_SYMOFF(ex) + (ex).a_syms) | |
| 89 | ||
| 90 | /* Description of the object file header (a.out format). */ | |
| 91 | struct exec { | |
| 92 | #define OMAGIC 0407 /* old impure format */ | |
| 93 | #define NMAGIC 0410 /* read-only text */ | |
| 94 | #define ZMAGIC 0413 /* demand load format */ | |
| 95 | #define QMAGIC 0314 /* demand load format. Header in text. */ | |
| 96 | unsigned int a_magic; /* magic number */ | |
| 97 | ||
| 98 | unsigned int a_text; /* text segment size */ | |
| 99 | unsigned int a_data; /* initialized data size */ | |
| 100 | unsigned int a_bss; /* uninitialized data size */ | |
| 101 | unsigned int a_syms; /* symbol table size */ | |
| 102 | unsigned int a_entry; /* entry point */ | |
| 103 | unsigned int a_trsize; /* text relocation size */ | |
| 104 | unsigned int a_drsize; /* data relocation size */ | |
| 105 | }; | |
| 106 | ||
| 107 | /* | |
| 108 | * Address of ps_strings structure (in user space). | |
| 109 | */ | |
| 110 | #define PS_STRINGS \ | |
| 111 | ((struct ps_strings *)(USRSTACK - sizeof(struct ps_strings))) |