[apple/xnu.git] / bsd / ppc / exec.h

/*
 * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
 * 
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. The rights granted to you under the License
 * may not be used to create, or enable the creation or redistribution of,
 * unlawful or unlicensed copies of an Apple operating system, or to
 * circumvent, violate, or enable the circumvention or violation of, any
 * terms of an Apple operating system software license agreement.
 * 
 * Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this file.
 * 
 * The 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, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 * 
 * @APPLE_OSREFERENCE_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.
 *
 */

#ifndef _BSD_PPC_EXEC_H_
#define _BSD_PPC_EXEC_H_


#include <sys/appleapiopts.h>

#ifdef BSD_KERNEL_PRIVATE
/* 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 */
};

#endif /* BSD_KERNEL_PRIVATE */

#endif /* _BSD_PPC_EXEC_H_ */
Commit	Line	Data
1c79356b	1	/*
5d5c5d0d A	2	* Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
5d5c5d0d A	3	*
2d21ac55	4	* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
1c79356b	5	*
2d21ac55 A	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.
8f6c56a5	14	*
2d21ac55 A	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
8f6c56a5 A	20	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
8f6c56a5 A	21	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
2d21ac55 A	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.
8f6c56a5	25	*
2d21ac55	26	* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
1c79356b A	27	*/
	28	/*
	29	* Copyright (c) 1994, The University of Utah and
	30	* the Center for Software Science at the University of Utah (CSS).
	31	* All rights reserved.
	32	*
	33	* Permission to use, copy, modify and distribute this software and its
	34	* documentation is hereby granted, provided that both the copyright
	35	* notice and this permission notice appear in all copies of the
	36	* software, derivative works or modified versions, and any portions
	37	* thereof, and that both notices appear in supporting documentation.
	38	*
	39	* THE UNIVERSITY OF UTAH AND CSS ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS
	40	* IS" CONDITION. THE UNIVERSITY OF UTAH AND CSS DISCLAIM ANY LIABILITY OF
	41	* ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
	42	*
	43	* CSS requests users of this software to return to css-dist@cs.utah.edu any
	44	* improvements that they make and grant CSS redistribution rights.
	45	*
	46	*/
	47
9bccf70c A	48	#ifndef _BSD_PPC_EXEC_H_
	49	#define _BSD_PPC_EXEC_H_
	50
	51
	52	#include <sys/appleapiopts.h>
	53
91447636	54	#ifdef BSD_KERNEL_PRIVATE
1c79356b A	55	/* Size of a page in an object file. */
	56	#define __LDPGSZ 4096
	57
	58	/* Valid magic number check. */
	59	#define N_BADMAG(ex) \
	60	((ex).a_magic != NMAGIC && (ex).a_magic != OMAGIC && \
	61	(ex).a_magic != ZMAGIC)
	62
	63	/* Address of the bottom of the text segment. */
	64	#define N_TXTADDR(X) 0
	65
	66	/* Address of the bottom of the data segment. */
	67	#define N_DATADDR(ex) \
	68	(N_TXTADDR(ex) + ((ex).a_magic == OMAGIC ? (ex).a_text \
	69	: __LDPGSZ + ((ex).a_text - 1 & ~(__LDPGSZ - 1))))
	70
	71	/* Text segment offset. */
	72	#define N_TXTOFF(ex) \
	73	((ex).a_magic == ZMAGIC ? __LDPGSZ : sizeof(struct exec))
	74
	75	/* Data segment offset. */
	76	#define N_DATOFF(ex) \
	77	(N_TXTOFF(ex) + ((ex).a_magic != ZMAGIC ? (ex).a_text : \
	78	__LDPGSZ + ((ex).a_text - 1 & ~(__LDPGSZ - 1))))
	79
	80	/* Symbol table offset. */
	81	#define N_SYMOFF(ex) \
	82	(N_TXTOFF(ex) + (ex).a_text + (ex).a_data + (ex).a_trsize + \
	83	(ex).a_drsize)
	84
	85	/* String table offset. */
	86	#define N_STROFF(ex) (N_SYMOFF(ex) + (ex).a_syms)
	87
	88	/* Description of the object file header (a.out format). */
	89	struct exec {
	90	#define OMAGIC 0407 /* old impure format */
	91	#define NMAGIC 0410 /* read-only text */
	92	#define ZMAGIC 0413 /* demand load format */
	93	#define QMAGIC 0314 /* demand load format. Header in text. */
	94	unsigned int a_magic; /* magic number */
	95
	96	unsigned int a_text; /* text segment size */
	97	unsigned int a_data; /* initialized data size */
	98	unsigned int a_bss; /* uninitialized data size */
	99	unsigned int a_syms; /* symbol table size */
	100	unsigned int a_entry; /* entry point */
	101	unsigned int a_trsize; /* text relocation size */
	102	unsigned int a_drsize; /* data relocation size */
	103	};
	104
91447636	105	#endif /* BSD_KERNEL_PRIVATE */
9bccf70c A	106
	107	#endif /* _BSD_PPC_EXEC_H_ */
	108