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This patch reroutes endian.h and byteswap.h usage through a new header,

Browse source 
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
This commit is contained in:
Stefan Reinauer 2007-05-05 17:27:54 +00:00
commit 3ba16aed25
2 changed files with 95 additions and 2 deletions
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5
util/dtc/dtc.h
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@ -31,8 +31,9 @@
#include <errno.h>
#include <unistd.h>
#include <netinet/in.h>
#include <endian.h>
#include <byteswap.h>
/* also covers (part of?) linux's byteswap.h functionality */
#include "endian.h"
#include "flat_dt.h"

92
util/dtc/endian.h Normal file
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@ -0,0 +1,92 @@
#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