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

/*
 * Copyright (c) 2000-2007 Apple Inc. All rights reserved.
 */
/*-
 * Copyright (c) 1992, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *	@(#)exec.h	8.1 (Berkeley) 6/11/93
 */

#ifndef _BSD_ARM_EXEC_H_
#define _BSD_ARM_EXEC_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_ARM_EXEC_H_ */
Commit	Line	Data
5ba3f43e A	1	/*
	2	* Copyright (c) 2000-2007 Apple Inc. All rights reserved.
	3	*/
	4	/*-
	5	* Copyright (c) 1992, 1993
	6	* The Regents of the University of California. All rights reserved.
	7	*
	8	* Redistribution and use in source and binary forms, with or without
	9	* modification, are permitted provided that the following conditions
	10	* are met:
	11	* 1. Redistributions of source code must retain the above copyright
	12	* notice, this list of conditions and the following disclaimer.
	13	* 2. Redistributions in binary form must reproduce the above copyright
	14	* notice, this list of conditions and the following disclaimer in the
	15	* documentation and/or other materials provided with the distribution.
	16	* 3. All advertising materials mentioning features or use of this software
	17	* must display the following acknowledgement:
	18	* This product includes software developed by the University of
	19	* California, Berkeley and its contributors.
	20	* 4. Neither the name of the University nor the names of its contributors
	21	* may be used to endorse or promote products derived from this software
	22	* without specific prior written permission.
	23	*
	24	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	25	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	26	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	27	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	28	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	29	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	30	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	31	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	32	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	33	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	34	* SUCH DAMAGE.
	35	*
	36	* @(#)exec.h 8.1 (Berkeley) 6/11/93
	37	*/
	38
	39	#ifndef _BSD_ARM_EXEC_H_
	40	#define _BSD_ARM_EXEC_H_
	41
	42
	43	#ifdef BSD_KERNEL_PRIVATE
	44	/* Size of a page in an object file. */
0a7de745	45	#define __LDPGSZ 4096
5ba3f43e A	46
5ba3f43e A	47	/* Valid magic number check. */
0a7de745	48	#define N_BADMAG(ex) \
5ba3f43e A	49	((ex).a_magic != NMAGIC && (ex).a_magic != OMAGIC && \
	50	(ex).a_magic != ZMAGIC)
	51
	52	/* Address of the bottom of the text segment. */
0a7de745	53	#define N_TXTADDR(X) 0
5ba3f43e A	54
	55	/* Address of the bottom of the data segment. */
	56	#define N_DATADDR(ex) \
	57	(N_TXTADDR(ex) + ((ex).a_magic == OMAGIC ? (ex).a_text \
	58	: __LDPGSZ + ((ex).a_text - 1 & ~(__LDPGSZ - 1))))
	59
	60	/* Text segment offset. */
0a7de745	61	#define N_TXTOFF(ex) \
5ba3f43e A	62	((ex).a_magic == ZMAGIC ? __LDPGSZ : sizeof(struct exec))
	63
	64	/* Data segment offset. */
0a7de745	65	#define N_DATOFF(ex) \
5ba3f43e A	66	(N_TXTOFF(ex) + ((ex).a_magic != ZMAGIC ? (ex).a_text : \
	67	__LDPGSZ + ((ex).a_text - 1 & ~(__LDPGSZ - 1))))
	68
	69	/* Symbol table offset. */
	70	#define N_SYMOFF(ex) \
	71	(N_TXTOFF(ex) + (ex).a_text + (ex).a_data + (ex).a_trsize + \
	72	(ex).a_drsize)
	73
	74	/* String table offset. */
0a7de745	75	#define N_STROFF(ex) (N_SYMOFF(ex) + (ex).a_syms)
5ba3f43e A	76
	77	/* Description of the object file header (a.out format). */
	78	struct exec {
0a7de745 A	79	#define OMAGIC 0407 /* old impure format */
	80	#define NMAGIC 0410 /* read-only text */
	81	#define ZMAGIC 0413 /* demand load format */
	82	#define QMAGIC 0314 /* demand load format. Header in text. */
	83	unsigned int a_magic; /* magic number */
5ba3f43e	84
0a7de745 A	85	unsigned int a_text; /* text segment size */
	86	unsigned int a_data; /* initialized data size */
	87	unsigned int a_bss; /* uninitialized data size */
	88	unsigned int a_syms; /* symbol table size */
	89	unsigned int a_entry; /* entry point */
	90	unsigned int a_trsize; /* text relocation size */
	91	unsigned int a_drsize; /* data relocation size */
5ba3f43e A	92	};
	93
	94	#endif /* BSD_KERNEL_PRIVATE */
	95
	96	#endif /* _BSD_ARM_EXEC_H_ */