_machelf.h revision 11827:d7ef53deac3f
1/* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22/* 23 * Copyright 2010 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 * 26 * Wrapper around the <sys/machelf.h> header that adds 27 * definitions used by SGS. 28 */ 29 30#ifndef _MACHELF_H 31#define _MACHELF_H 32 33#include <sys/machelf.h> 34#include <string.h> /* memcpy() */ 35 36/* 37 * Make machine class dependent functions transparent to the common code 38 */ 39 40/* 41 * Note on ELF_R_TYPE: 64-bit sparc relocations require the use of 42 * ELF64_R_TYPE_ID instead of the ELF64_R_TYPE macro used for all 43 * other platforms. So our ELF_R_TYPE macro requires the caller to 44 * supply the machine type. 45 */ 46 47 48#if defined(_ELF64) 49#define ELF_R_TYPE(_info, _mach) \ 50 (((_mach) == EM_SPARCV9) ? ELF64_R_TYPE_ID(_info) : ELF64_R_TYPE(_info)) 51#define ELF_R_INFO ELF64_R_INFO 52#define ELF_R_SYM ELF64_R_SYM 53#define ELF_R_TYPE_DATA(x) ELF64_R_TYPE_DATA(x) 54#define ELF_R_TYPE_INFO(xoff, type) ELF64_R_TYPE_INFO(xoff, type) 55#define ELF_ST_BIND ELF64_ST_BIND 56#define ELF_ST_TYPE ELF64_ST_TYPE 57#define ELF_ST_INFO ELF64_ST_INFO 58#define ELF_ST_VISIBILITY ELF64_ST_VISIBILITY 59#define ELF_M_SYM ELF64_M_SYM 60#define ELF_M_SIZE ELF64_M_SIZE 61#define ELF_M_INFO ELF64_M_INFO 62#define ELF_C_SYM ELF64_C_SYM 63#define ELF_C_GROUP ELF64_C_GROUP 64#define ELF_C_INFO ELF64_C_INFO 65#define elf_checksum elf64_checksum 66#define elf_fsize elf64_fsize 67#define elf_getehdr elf64_getehdr 68#define elf_getphdr elf64_getphdr 69#define elf_newehdr elf64_newehdr 70#define elf_newphdr elf64_newphdr 71#define elf_getshdr elf64_getshdr 72#define elf_xlatetof elf64_xlatetof 73#define elf_xlatetom elf64_xlatetom 74#else /* _ELF64 */ 75#define ELF_R_TYPE(_info, _mach) ELF32_R_TYPE(_info) 76#define ELF_R_INFO ELF32_R_INFO 77#define ELF_R_SYM ELF32_R_SYM 78/* Elf64 can hide extra offset in r_info */ 79#define ELF_R_TYPE_DATA(x) (0) 80#define ELF_R_TYPE_INFO(xoff, type) (type) 81#define ELF_ST_BIND ELF32_ST_BIND 82#define ELF_ST_TYPE ELF32_ST_TYPE 83#define ELF_ST_INFO ELF32_ST_INFO 84#define ELF_ST_VISIBILITY ELF32_ST_VISIBILITY 85#define ELF_M_SYM ELF32_M_SYM 86#define ELF_M_SIZE ELF32_M_SIZE 87#define ELF_M_INFO ELF32_M_INFO 88#define ELF_C_SYM ELF32_C_SYM 89#define ELF_C_GROUP ELF32_C_GROUP 90#define ELF_C_INFO ELF32_C_INFO 91#define elf_checksum elf32_checksum 92#define elf_fsize elf32_fsize 93#define elf_getehdr elf32_getehdr 94#define elf_getphdr elf32_getphdr 95#define elf_newehdr elf32_newehdr 96#define elf_newphdr elf32_newphdr 97#define elf_getshdr elf32_getshdr 98#define elf_xlatetof elf32_xlatetof 99#define elf_xlatetom elf32_xlatetom 100#endif /* _ELF32 */ 101 102 103/* 104 * Macros for swapping bytes. The type of the argument must 105 * match the type given in the macro name. 106 */ 107#define BSWAP_HALF(_half) \ 108 (((_half) << 8) | ((_half) >> 8)) 109 110#define BSWAP_WORD(_word) \ 111 ((((_word) << 24) | (((_word) & 0xff00) << 8) | \ 112 (((_word) >> 8) & 0xff00) | ((_word) >> 24))) 113 114#define BSWAP_LWORD(_lword) \ 115 (((_lword) << 56) | \ 116 (((_lword) & 0x0000ff00) << 40) | \ 117 (((_lword) & 0x00ff0000) << 24) | \ 118 (((_lword) & 0xff000000) << 8) | \ 119 (((_lword) >> 8) & 0xff000000) | \ 120 (((_lword) >> 24) & 0x00ff0000) | \ 121 (((_lword) >> 40) & 0x0000ff00) | \ 122 ((_lword) >> 56)) /* Lword is unsigned - 0 bits enter from left */ 123 124 125#if defined(_ELF64) 126#define BSWAP_XWORD(_xword) BSWAP_LWORD(_xword) 127#else 128#define BSWAP_XWORD(_xword) BSWAP_WORD(_xword) 129#endif 130 131/* 132 * Macros for assigning Half/Word/Xword items from one location to 133 * another that are safe no matter what the data alignment rules of the 134 * running platform are. Variants exist to swap the data byteorder 135 * at the same time, or not. 136 * 137 * These macros are useful for code that accesses data that is aligned 138 * for a different system architecture, as occurs in cross linking. 139 * 140 * All of these macros assume the arguments are passed as pointers to 141 * bytes (signed or unsigned). 142 */ 143 144#define UL_ASSIGN_HALF(_dst, _src) (void) \ 145 ((_dst)[0] = (_src)[0], (_dst)[1] = (_src)[1]) 146#define UL_ASSIGN_WORD(_dst, _src) (void) \ 147 ((_dst)[0] = (_src)[0], (_dst)[1] = (_src)[1], \ 148 (_dst)[2] = (_src)[2], (_dst)[3] = (_src)[3]) 149#define UL_ASSIGN_LWORD(_dst, _src) (void) memcpy(_dst, (_src), sizeof (Lword)) 150#if defined(_ELF64) 151#define UL_ASSIGN_XWORD(_dst, _src) UL_ASSIGN_LWORD(_dst, _src) 152#else 153#define UL_ASSIGN_XWORD(_xword) UL_ASSIGN_WORD(_xword) 154#endif 155 156#define UL_ASSIGN_BSWAP_HALF(_dst, _src) (void) \ 157 ((_dst)[0] = (_src)[1], (_dst)[1] = (_src)[0]) 158#define UL_ASSIGN_BSWAP_WORD(_dst, _src) (void) \ 159 ((_dst)[0] = (_src)[3], (_dst)[1] = (_src)[2], \ 160 (_dst)[2] = (_src)[1], (_dst)[3] = (_src)[0]) 161#define UL_ASSIGN_BSWAP_LWORD(_dst, _src) (void) \ 162 ((_dst)[0] = (_src)[7], (_dst)[1] = (_src)[6], \ 163 (_dst)[2] = (_src)[5], (_dst)[3] = (_src)[4], \ 164 (_dst)[4] = (_src)[3], (_dst)[5] = (_src)[2], \ 165 (_dst)[6] = (_src)[1], (_dst)[7] = (_src)[0]) 166#if defined(_ELF64) 167#define UL_ASSIGN_BSWAP_XWORD(_dst, _src) UL_ASSIGN_BSWAP_LWORD(_dst, _src) 168#else 169#define UL_ASSIGN_BSWAP_XWORD(_dst, _src) UL_ASSIGN_BSWAP_WORD(_dst, _src) 170#endif 171 172 173#endif /* _MACHELF_H */ 174