byteswap.h
95 lines
| 3.5 KiB
| text/x-c
|
CLexer
Jeandet Alexis
|
r0 | /* | ||
| byteswap.h - functions and macros for byte swapping. | ||||
| Copyright (C) 1995 - 2001 Michael Riepe | ||||
| This library is free software; you can redistribute it and/or | ||||
| modify it under the terms of the GNU Library General Public | ||||
| License as published by the Free Software Foundation; either | ||||
| version 2 of the License, or (at your option) any later version. | ||||
| This library is distributed in the hope that it will be useful, | ||||
| but WITHOUT ANY WARRANTY; without even the implied warranty of | ||||
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||||
| Library General Public License for more details. | ||||
| You should have received a copy of the GNU Library General Public | ||||
| License along with this library; if not, write to the Free Software | ||||
| Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA | ||||
| */ | ||||
| /* @(#) $Id: byteswap.h,v 1.7 2008/05/23 08:15:34 michael Exp $ */ | ||||
| #ifndef _BYTESWAP_H | ||||
| #define _BYTESWAP_H | ||||
| #define lu(from,i,s) (((__libelf_u32_t)((unsigned char*)(from))[i])<<(s)) | ||||
| #define li(from,i,s) (((__libelf_i32_t)(( signed char*)(from))[i])<<(s)) | ||||
| #define __load_u16L(from) ((__libelf_u32_t) \ | ||||
| (lu(from,1,8) | lu(from,0,0))) | ||||
| #define __load_u16M(from) ((__libelf_u32_t) \ | ||||
| (lu(from,0,8) | lu(from,1,0))) | ||||
| #define __load_i16L(from) ((__libelf_i32_t) \ | ||||
| (li(from,1,8) | lu(from,0,0))) | ||||
| #define __load_i16M(from) ((__libelf_i32_t) \ | ||||
| (li(from,0,8) | lu(from,1,0))) | ||||
| #define __load_u32L(from) ((__libelf_u32_t) \ | ||||
| (lu(from,3,24) | lu(from,2,16) | lu(from,1,8) | lu(from,0,0))) | ||||
| #define __load_u32M(from) ((__libelf_u32_t) \ | ||||
| (lu(from,0,24) | lu(from,1,16) | lu(from,2,8) | lu(from,3,0))) | ||||
| #define __load_i32L(from) ((__libelf_i32_t) \ | ||||
| (li(from,3,24) | lu(from,2,16) | lu(from,1,8) | lu(from,0,0))) | ||||
| #define __load_i32M(from) ((__libelf_i32_t) \ | ||||
| (li(from,0,24) | lu(from,1,16) | lu(from,2,8) | lu(from,3,0))) | ||||
| #define su(to,i,v,s) (((char*)(to))[i]=((__libelf_u32_t)(v)>>(s))) | ||||
| #define si(to,i,v,s) (((char*)(to))[i]=((__libelf_i32_t)(v)>>(s))) | ||||
| #define __store_u16L(to,v) \ | ||||
| (su(to,1,v,8), su(to,0,v,0)) | ||||
| #define __store_u16M(to,v) \ | ||||
| (su(to,0,v,8), su(to,1,v,0)) | ||||
| #define __store_i16L(to,v) \ | ||||
| (si(to,1,v,8), si(to,0,v,0)) | ||||
| #define __store_i16M(to,v) \ | ||||
| (si(to,0,v,8), si(to,1,v,0)) | ||||
| #define __store_u32L(to,v) \ | ||||
| (su(to,3,v,24), su(to,2,v,16), su(to,1,v,8), su(to,0,v,0)) | ||||
| #define __store_u32M(to,v) \ | ||||
| (su(to,0,v,24), su(to,1,v,16), su(to,2,v,8), su(to,3,v,0)) | ||||
| #define __store_i32L(to,v) \ | ||||
| (si(to,3,v,24), si(to,2,v,16), si(to,1,v,8), si(to,0,v,0)) | ||||
| #define __store_i32M(to,v) \ | ||||
| (si(to,0,v,24), si(to,1,v,16), si(to,2,v,8), si(to,3,v,0)) | ||||
| #if __LIBELF64 | ||||
| /* | ||||
| * conversion functions from swap64.c | ||||
| */ | ||||
| extern __libelf_u64_t _elf_load_u64L(const unsigned char *from); | ||||
| extern __libelf_u64_t _elf_load_u64M(const unsigned char *from); | ||||
| extern __libelf_i64_t _elf_load_i64L(const unsigned char *from); | ||||
| extern __libelf_i64_t _elf_load_i64M(const unsigned char *from); | ||||
| extern void _elf_store_u64L(unsigned char *to, __libelf_u64_t v); | ||||
| extern void _elf_store_u64M(unsigned char *to, __libelf_u64_t v); | ||||
| extern void _elf_store_i64L(unsigned char *to, __libelf_u64_t v); | ||||
| extern void _elf_store_i64M(unsigned char *to, __libelf_u64_t v); | ||||
| /* | ||||
| * aliases for existing conversion code | ||||
| */ | ||||
| #define __load_u64L _elf_load_u64L | ||||
| #define __load_u64M _elf_load_u64M | ||||
| #define __load_i64L _elf_load_i64L | ||||
| #define __load_i64M _elf_load_i64M | ||||
| #define __store_u64L _elf_store_u64L | ||||
| #define __store_u64M _elf_store_u64M | ||||
| #define __store_i64L _elf_store_i64L | ||||
| #define __store_i64M _elf_store_i64M | ||||
| #endif /* __LIBELF64 */ | ||||
| #endif /* _BYTESWAP_H */ | ||||