xref: /illumos-gate/usr/src/uts/common/sys/elf_386.h (revision a530dbfe)

/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */

/*
 *	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T
 *	  All Rights Reserved
 *
 * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#ifndef _SYS_ELF_386_H
#define	_SYS_ELF_386_H

#ifdef	__cplusplus
extern "C" {
#endif

#define	R_386_NONE		0	/* relocation type */
#define	R_386_32		1
#define	R_386_PC32		2
#define	R_386_GOT32		3
#define	R_386_PLT32		4
#define	R_386_COPY		5
#define	R_386_GLOB_DAT		6
#define	R_386_JMP_SLOT		7
#define	R_386_RELATIVE		8
#define	R_386_GOTOFF		9
#define	R_386_GOTPC		10
#define	R_386_32PLT		11
#define	R_386_TLS_GD_PLT	12
#define	R_386_TLS_LDM_PLT	13
#define	R_386_TLS_TPOFF		14
#define	R_386_TLS_IE		15
#define	R_386_TLS_GOTIE		16
#define	R_386_TLS_LE		17
#define	R_386_TLS_GD		18
#define	R_386_TLS_LDM		19
#define	R_386_16		20
#define	R_386_PC16		21
#define	R_386_8			22
#define	R_386_PC8		23
#define	R_386_TLS_GD_32		24
#define	R_386_TLS_GD_PUSH	25
#define	R_386_TLS_GD_CALL	26
#define	R_386_TLS_GD_POP	27
#define	R_386_TLS_LDM_32	28
#define	R_386_TLS_LDM_PUSH	29
#define	R_386_TLS_LDM_CALL	30
#define	R_386_TLS_LDM_POP	31
#define	R_386_TLS_LDO_32	32
#define	R_386_TLS_IE_32		33
#define	R_386_TLS_LE_32		34
#define	R_386_TLS_DTPMOD32	35
#define	R_386_TLS_DTPOFF32	36
#define	R_386_TLS_TPOFF32	37
#define	R_386_SIZE32		38
#define	R_386_TLS_GOTDESC	39
#define	R_386_TLS_DESC_CALL	40
#define	R_386_TLS_DESC		41
#define	R_386_IRELATIVE		42
#define	R_386_GOT32X		43
#define	R_386_NUM		44

#define	ELF_386_MAXPGSZ		0x10000	/* maximum page size */

#define	SHF_ORDERED	0x40000000
#define	SHF_EXCLUDE	0x80000000

#define	SHN_BEFORE	0xff00
#define	SHN_AFTER	0xff01

/*
 * There are consumers of this file that want to include elf defines for
 * all architectures.  This is a problem for the defines below, because
 * while they are architecture specific they have common names.  Hence to
 * prevent attempts to redefine these variables we'll check if any of
 * the other elf architecture header files have been included.  If
 * they have then we'll just stick with the existing definitions.
 */
#if !defined(_SYS_ELF_MACH_COMMON)
#define	_SYS_ELF_MACH_COMMON
#define	_SYS_ELF_MACH_386

/*
 * Plt and Got information; the first few .got and .plt entries are reserved
 *	PLT[0]	jump to dynamic linker
 *	GOT[0]	address of _DYNAMIC
 */
#define	M_PLT_INSSIZE		6	/* single plt instruction size */
#define	M_PLT_XNumber		1	/* PLT[0] reserved */
#define	M_GOT_XDYNAMIC		0	/* got index for _DYNAMIC */
#define	M_GOT_XLINKMAP		1	/* got index for link map */
#define	M_GOT_XRTLD		2	/* got index for rtbinder */
#define	M_GOT_XNumber		3	/* reserved no. of got entries */

#define	M32_WORD_ALIGN		4
#define	M32_PLT_ENTSIZE		16	/* plt entry size in bytes */
#define	M32_PLT_ALIGN		M32_WORD_ALIGN	/* alignment of .plt section */
#define	M32_GOT_ENTSIZE		4	/* got entry size in bytes */
#define	M32_PLT_RESERVSZ	(M_PLT_XNumber * \
				M32_PLT_ENTSIZE) /* first plt reserved */


/*
 * Make common alias for the 32/64 bit specific defines based on _ELF64
 */
#if !defined(_ELF64)
/* architecture common defines */
#define	M_WORD_ALIGN		M32_WORD_ALIGN
#define	M_PLT_ENTSIZE		M32_PLT_ENTSIZE
#define	M_PLT_ALIGN		M32_PLT_ALIGN
#define	M_PLT_RESERVSZ		M32_PLT_RESERVSZ
#define	M_GOT_ENTSIZE		M32_GOT_ENTSIZE
#endif /* !_ELF64 */

#endif /* !_SYS_ELF_MACH_COMMON */

#ifdef	__cplusplus
}
#endif

#endif	/* _SYS_ELF_386_H */