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- /*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
- *
- * @APPLE_LICENSE_HEADER_START@
- *
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License"). You may not use this file except in compliance with the
- * License. Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
- *
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
- * License for the specific language governing rights and limitations
- * under the License.
- *
- * @APPLE_LICENSE_HEADER_END@
- */
- /*
- * Copyright (c) 1994, The University of Utah and
- * the Center for Software Science at the University of Utah (CSS).
- * All rights reserved.
- *
- * Permission to use, copy, modify and distribute this software and its
- * documentation is hereby granted, provided that both the copyright
- * notice and this permission notice appear in all copies of the
- * software, derivative works or modified versions, and any portions
- * thereof, and that both notices appear in supporting documentation.
- *
- * THE UNIVERSITY OF UTAH AND CSS ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS
- * IS" CONDITION. THE UNIVERSITY OF UTAH AND CSS DISCLAIM ANY LIABILITY OF
- * ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
- *
- * CSS requests users of this software to return to css-dist@cs.utah.edu any
- * improvements that they make and grant CSS redistribution rights.
- *
- */
-
- /* Size of a page in an object file. */
- #define __LDPGSZ 4096
-
- /* Valid magic number check. */
- #define N_BADMAG(ex) \
- ((ex).a_magic != NMAGIC && (ex).a_magic != OMAGIC && \
- (ex).a_magic != ZMAGIC)
-
- /* Address of the bottom of the text segment. */
- #define N_TXTADDR(X) 0
-
- /* Address of the bottom of the data segment. */
- #define N_DATADDR(ex) \
- (N_TXTADDR(ex) + ((ex).a_magic == OMAGIC ? (ex).a_text \
- : __LDPGSZ + ((ex).a_text - 1 & ~(__LDPGSZ - 1))))
-
- /* Text segment offset. */
- #define N_TXTOFF(ex) \
- ((ex).a_magic == ZMAGIC ? __LDPGSZ : sizeof(struct exec))
-
- /* Data segment offset. */
- #define N_DATOFF(ex) \
- (N_TXTOFF(ex) + ((ex).a_magic != ZMAGIC ? (ex).a_text : \
- __LDPGSZ + ((ex).a_text - 1 & ~(__LDPGSZ - 1))))
-
- /* Symbol table offset. */
- #define N_SYMOFF(ex) \
- (N_TXTOFF(ex) + (ex).a_text + (ex).a_data + (ex).a_trsize + \
- (ex).a_drsize)
-
- /* String table offset. */
- #define N_STROFF(ex) (N_SYMOFF(ex) + (ex).a_syms)
-
- /* Description of the object file header (a.out format). */
- struct exec {
- #define OMAGIC 0407 /* old impure format */
- #define NMAGIC 0410 /* read-only text */
- #define ZMAGIC 0413 /* demand load format */
- #define QMAGIC 0314 /* demand load format. Header in text. */
- unsigned int a_magic; /* magic number */
-
- unsigned int a_text; /* text segment size */
- unsigned int a_data; /* initialized data size */
- unsigned int a_bss; /* uninitialized data size */
- unsigned int a_syms; /* symbol table size */
- unsigned int a_entry; /* entry point */
- unsigned int a_trsize; /* text relocation size */
- unsigned int a_drsize; /* data relocation size */
- };
-
- /*
- * Address of ps_strings structure (in user space).
- */
- #define PS_STRINGS \
- ((struct ps_strings *)(USRSTACK - sizeof(struct ps_strings)))
-
-