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/*
* 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 2010 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*
* Wrapper around the <sys/machelf.h> header that adds
* definitions used by SGS.
*/
#ifndef _MACHELF_H
#define _MACHELF_H
#include <sys/machelf.h>
#include <string.h> /* memcpy() */
/*
* Make machine class dependent functions transparent to the common code
*/
/*
* Note on ELF_R_TYPE: 64-bit sparc relocations require the use of
* ELF64_R_TYPE_ID instead of the ELF64_R_TYPE macro used for all
* other platforms. So our ELF_R_TYPE macro requires the caller to
* supply the machine type.
*/
#if defined(_ELF64)
#define ELF_R_TYPE(_info, _mach) \
(((_mach) == EM_SPARCV9) ? ELF64_R_TYPE_ID(_info) : ELF64_R_TYPE(_info))
#define ELF_R_INFO ELF64_R_INFO
#define ELF_R_SYM ELF64_R_SYM
#define ELF_R_TYPE_DATA(x) ELF64_R_TYPE_DATA(x)
#define ELF_R_TYPE_INFO(xoff, type) ELF64_R_TYPE_INFO(xoff, type)
#define ELF_ST_BIND ELF64_ST_BIND
#define ELF_ST_TYPE ELF64_ST_TYPE
#define ELF_ST_INFO ELF64_ST_INFO
#define ELF_ST_VISIBILITY ELF64_ST_VISIBILITY
#define ELF_M_SYM ELF64_M_SYM
#define ELF_M_SIZE ELF64_M_SIZE
#define ELF_M_INFO ELF64_M_INFO
#define ELF_C_SYM ELF64_C_SYM
#define ELF_C_GROUP ELF64_C_GROUP
#define ELF_C_INFO ELF64_C_INFO
#define elf_checksum elf64_checksum
#define elf_fsize elf64_fsize
#define elf_getehdr elf64_getehdr
#define elf_getphdr elf64_getphdr
#define elf_newehdr elf64_newehdr
#define elf_newphdr elf64_newphdr
#define elf_getshdr elf64_getshdr
#define elf_xlatetof elf64_xlatetof
#define elf_xlatetom elf64_xlatetom
#else /* _ELF64 */
#define ELF_R_TYPE(_info, _mach) ELF32_R_TYPE(_info)
#define ELF_R_INFO ELF32_R_INFO
#define ELF_R_SYM ELF32_R_SYM
/* Elf64 can hide extra offset in r_info */
#define ELF_R_TYPE_DATA(x) (0)
#define ELF_R_TYPE_INFO(xoff, type) (type)
#define ELF_ST_BIND ELF32_ST_BIND
#define ELF_ST_TYPE ELF32_ST_TYPE
#define ELF_ST_INFO ELF32_ST_INFO
#define ELF_ST_VISIBILITY ELF32_ST_VISIBILITY
#define ELF_M_SYM ELF32_M_SYM
#define ELF_M_SIZE ELF32_M_SIZE
#define ELF_M_INFO ELF32_M_INFO
#define ELF_C_SYM ELF32_C_SYM
#define ELF_C_GROUP ELF32_C_GROUP
#define ELF_C_INFO ELF32_C_INFO
#define elf_checksum elf32_checksum
#define elf_fsize elf32_fsize
#define elf_getehdr elf32_getehdr
#define elf_getphdr elf32_getphdr
#define elf_newehdr elf32_newehdr
#define elf_newphdr elf32_newphdr
#define elf_getshdr elf32_getshdr
#define elf_xlatetof elf32_xlatetof
#define elf_xlatetom elf32_xlatetom
#endif /* _ELF32 */
/*
* Macros for swapping bytes. The type of the argument must
* match the type given in the macro name.
*/
#define BSWAP_HALF(_half) \
(((_half) << 8) | ((_half) >> 8))
#define BSWAP_WORD(_word) \
((((_word) << 24) | (((_word) & 0xff00) << 8) | \
(((_word) >> 8) & 0xff00) | ((_word) >> 24)))
#define BSWAP_LWORD(_lword) \
(((_lword) << 56) | \
(((_lword) & 0x0000ff00) << 40) | \
(((_lword) & 0x00ff0000) << 24) | \
(((_lword) & 0xff000000) << 8) | \
(((_lword) >> 8) & 0xff000000) | \
(((_lword) >> 24) & 0x00ff0000) | \
(((_lword) >> 40) & 0x0000ff00) | \
((_lword) >> 56)) /* Lword is unsigned - 0 bits enter from left */
#if defined(_ELF64)
#define BSWAP_XWORD(_xword) BSWAP_LWORD(_xword)
#else
#define BSWAP_XWORD(_xword) BSWAP_WORD(_xword)
#endif
/*
* Macros for assigning Half/Word/Xword items from one location to
* another that are safe no matter what the data alignment rules of the
* running platform are. Variants exist to swap the data byteorder
* at the same time, or not.
*
* These macros are useful for code that accesses data that is aligned
* for a different system architecture, as occurs in cross linking.
*
* All of these macros assume the arguments are passed as pointers to
* bytes (signed or unsigned).
*/
#define UL_ASSIGN_HALF(_dst, _src) (void) \
((_dst)[0] = (_src)[0], (_dst)[1] = (_src)[1])
#define UL_ASSIGN_WORD(_dst, _src) (void) \
((_dst)[0] = (_src)[0], (_dst)[1] = (_src)[1], \
(_dst)[2] = (_src)[2], (_dst)[3] = (_src)[3])
#define UL_ASSIGN_LWORD(_dst, _src) (void) memcpy(_dst, (_src), sizeof (Lword))
#if defined(_ELF64)
#define UL_ASSIGN_XWORD(_dst, _src) UL_ASSIGN_LWORD(_dst, _src)
#else
#define UL_ASSIGN_XWORD(_xword) UL_ASSIGN_WORD(_xword)
#endif
#define UL_ASSIGN_BSWAP_HALF(_dst, _src) (void) \
((_dst)[0] = (_src)[1], (_dst)[1] = (_src)[0])
#define UL_ASSIGN_BSWAP_WORD(_dst, _src) (void) \
((_dst)[0] = (_src)[3], (_dst)[1] = (_src)[2], \
(_dst)[2] = (_src)[1], (_dst)[3] = (_src)[0])
#define UL_ASSIGN_BSWAP_LWORD(_dst, _src) (void) \
((_dst)[0] = (_src)[7], (_dst)[1] = (_src)[6], \
(_dst)[2] = (_src)[5], (_dst)[3] = (_src)[4], \
(_dst)[4] = (_src)[3], (_dst)[5] = (_src)[2], \
(_dst)[6] = (_src)[1], (_dst)[7] = (_src)[0])
#if defined(_ELF64)
#define UL_ASSIGN_BSWAP_XWORD(_dst, _src) UL_ASSIGN_BSWAP_LWORD(_dst, _src)
#else
#define UL_ASSIGN_BSWAP_XWORD(_dst, _src) UL_ASSIGN_BSWAP_WORD(_dst, _src)
#endif
#endif /* _MACHELF_H */
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