mirror of
https://github.com/fail0verflow/switch-coreboot.git
synced 2025-05-04 01:39:18 -04:00
3ba16aed25
which just includes those two files on linux, and provides a compatibility wrapper on Solaris, with room for other systems. Signed-off-by: Patrick Georgi <patrick@georgi-clan.de> Acked-by: Stefan Reinauer <stepan@coresystems.de> git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@309 f3766cd6-281f-0410-b1cd-43a5c92072e9
92 lines
2.4 KiB
C
92 lines
2.4 KiB
C
#ifndef _OSDEP_ENDIAN_H
|
|
#define _OSDEP_ENDIAN_H
|
|
|
|
/*
|
|
* This file is part of the LinuxBIOS project.
|
|
*
|
|
* Copyright (C) 2006 Michael Niedermayer <michaelni@gmx.at>
|
|
* Copyright (C) 2007 Patrick Georgi <patrick@georgi-clan.de>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program 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 General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
|
|
/*
|
|
* This file implements the Linux API (as of early 2007 at least)
|
|
* for compile time endian checking, and provides support for
|
|
* byte swap operations.
|
|
*
|
|
* Supported are: Linux, Solaris
|
|
* Adding support for other operating systems is a matter of
|
|
* figuring out how the system exposes information about the ISA
|
|
* to the C preprocessor and use this to represent that information
|
|
* The Linux Way.
|
|
*
|
|
* See Solaris as an example.
|
|
*/
|
|
|
|
/* define __BYTE_ORDER to __LITTLE_ENDIAN or __BIG_ENDIAN as appropriate */
|
|
#ifdef linux
|
|
#include <endian.h>
|
|
#endif
|
|
|
|
#ifdef sun
|
|
#include <sys/isa_defs.h>
|
|
|
|
#ifdef _LITLE_ENDIAN
|
|
#define __BYTE_ORDER __LITTLE_ENDIAN
|
|
#else
|
|
#define __BYTE_ORDER __BIG_ENDIAN
|
|
#endif
|
|
|
|
#endif
|
|
|
|
/* implement bswap_{16,32,64}.
|
|
* A portable default implementation exists, but there might be
|
|
* faster ways on your system.
|
|
*/
|
|
#ifdef linux
|
|
#include <byteswap.h>
|
|
#else
|
|
/* bswap_16, bswap_32, bswap_64:
|
|
taken from libavutil, under the following terms:
|
|
|
|
copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
|
|
LGPL v2.1 or later
|
|
considered relicensed as GPL according to LGPL article 3
|
|
*/
|
|
static inline uint16_t bswap_16(uint16_t x){
|
|
return (x>>8) | (x<<8);
|
|
}
|
|
|
|
static inline uint32_t bswap_32(uint32_t x){
|
|
x= ((x<<8)&0xFF00FF00) | ((x>>8)&0x00FF00FF);
|
|
return (x>>16) | (x<<16);
|
|
}
|
|
|
|
static inline uint64_t bswap_64(uint64_t x)
|
|
{
|
|
union {
|
|
uint64_t ll;
|
|
uint32_t l[2];
|
|
} w, r;
|
|
w.ll = x;
|
|
r.l[0] = bswap_32 (w.l[1]);
|
|
r.l[1] = bswap_32 (w.l[0]);
|
|
return r.ll;
|
|
}
|
|
#endif
|
|
|
|
#endif
|