mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-12-22 23:56:48 +02:00
7ed9009bbd
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@7092 3c298f89-4303-0410-b956-a3cf2f4a3e73
199 lines
4.5 KiB
C
199 lines
4.5 KiB
C
/*
|
|
* local version of endian.h - byte order defines
|
|
*
|
|
* Copyright 2006, Broadcom Corporation
|
|
* All Rights Reserved.
|
|
*
|
|
* THIS SOFTWARE IS OFFERED "AS IS", AND BROADCOM GRANTS NO WARRANTIES OF ANY
|
|
* KIND, EXPRESS OR IMPLIED, BY STATUTE, COMMUNICATION OR OTHERWISE. BROADCOM
|
|
* SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS
|
|
* FOR A SPECIFIC PURPOSE OR NONINFRINGEMENT CONCERNING THIS SOFTWARE.
|
|
*
|
|
* $Id: bcmendian.h,v 1.1.1.10 2006/02/27 03:43:16 honor Exp $
|
|
*/
|
|
|
|
#ifndef _BCMENDIAN_H_
|
|
#define _BCMENDIAN_H_
|
|
|
|
#include <typedefs.h>
|
|
|
|
/* Byte swap a 16 bit value */
|
|
#define BCMSWAP16(val) \
|
|
((uint16)(\
|
|
(((uint16)(val) & (uint16)0x00ffU) << 8) | \
|
|
(((uint16)(val) & (uint16)0xff00U) >> 8)))
|
|
|
|
/* Byte swap a 32 bit value */
|
|
#define BCMSWAP32(val) \
|
|
((uint32)(\
|
|
(((uint32)(val) & (uint32)0x000000ffUL) << 24) | \
|
|
(((uint32)(val) & (uint32)0x0000ff00UL) << 8) | \
|
|
(((uint32)(val) & (uint32)0x00ff0000UL) >> 8) | \
|
|
(((uint32)(val) & (uint32)0xff000000UL) >> 24)))
|
|
|
|
/* 2 Byte swap a 32 bit value */
|
|
#define BCMSWAP32BY16(val) \
|
|
((uint32)(\
|
|
(((uint32)(val) & (uint32)0x0000ffffUL) << 16) | \
|
|
(((uint32)(val) & (uint32)0xffff0000UL) >> 16)))
|
|
|
|
|
|
static INLINE uint16
|
|
bcmswap16(uint16 val)
|
|
{
|
|
return BCMSWAP16(val);
|
|
}
|
|
|
|
static INLINE uint32
|
|
bcmswap32(uint32 val)
|
|
{
|
|
return BCMSWAP32(val);
|
|
}
|
|
|
|
static INLINE uint32
|
|
bcmswap32by16(uint32 val)
|
|
{
|
|
return BCMSWAP32BY16(val);
|
|
}
|
|
|
|
/* buf - start of buffer of shorts to swap */
|
|
/* len - byte length of buffer */
|
|
static INLINE void
|
|
bcmswap16_buf(uint16 *buf, uint len)
|
|
{
|
|
len = len/2;
|
|
|
|
while (len--) {
|
|
*buf = bcmswap16(*buf);
|
|
buf++;
|
|
}
|
|
}
|
|
|
|
#ifndef hton16
|
|
#ifndef IL_BIGENDIAN
|
|
#define HTON16(i) BCMSWAP16(i)
|
|
#define hton16(i) bcmswap16(i)
|
|
#define hton32(i) bcmswap32(i)
|
|
#define ntoh16(i) bcmswap16(i)
|
|
#define ntoh32(i) bcmswap32(i)
|
|
#define ltoh16(i) (i)
|
|
#define ltoh32(i) (i)
|
|
#define htol16(i) (i)
|
|
#define htol32(i) (i)
|
|
#else
|
|
#define HTON16(i) (i)
|
|
#define hton16(i) (i)
|
|
#define hton32(i) (i)
|
|
#define ntoh16(i) (i)
|
|
#define ntoh32(i) (i)
|
|
#define ltoh16(i) bcmswap16(i)
|
|
#define ltoh32(i) bcmswap32(i)
|
|
#define htol16(i) bcmswap16(i)
|
|
#define htol32(i) bcmswap32(i)
|
|
#endif /* IL_BIGENDIAN */
|
|
#endif /* hton16 */
|
|
|
|
#ifndef IL_BIGENDIAN
|
|
#define ltoh16_buf(buf, i)
|
|
#define htol16_buf(buf, i)
|
|
#else
|
|
#define ltoh16_buf(buf, i) bcmswap16_buf((uint16*)buf, i)
|
|
#define htol16_buf(buf, i) bcmswap16_buf((uint16*)buf, i)
|
|
#endif /* IL_BIGENDIAN */
|
|
|
|
/*
|
|
* store 16-bit value to unaligned little endian byte array.
|
|
*/
|
|
static INLINE void
|
|
htol16_ua_store(uint16 val, uint8 *bytes)
|
|
{
|
|
bytes[0] = val&0xff;
|
|
bytes[1] = val>>8;
|
|
}
|
|
|
|
/*
|
|
* store 32-bit value to unaligned little endian byte array.
|
|
*/
|
|
static INLINE void
|
|
htol32_ua_store(uint32 val, uint8 *bytes)
|
|
{
|
|
bytes[0] = val&0xff;
|
|
bytes[1] = (val>>8)&0xff;
|
|
bytes[2] = (val>>16)&0xff;
|
|
bytes[3] = val>>24;
|
|
}
|
|
|
|
/*
|
|
* store 16-bit value to unaligned network(big) endian byte array.
|
|
*/
|
|
static INLINE void
|
|
hton16_ua_store(uint16 val, uint8 *bytes)
|
|
{
|
|
bytes[1] = val&0xff;
|
|
bytes[0] = val>>8;
|
|
}
|
|
|
|
/*
|
|
* store 32-bit value to unaligned network(big) endian byte array.
|
|
*/
|
|
static INLINE void
|
|
hton32_ua_store(uint32 val, uint8 *bytes)
|
|
{
|
|
bytes[3] = val&0xff;
|
|
bytes[2] = (val>>8)&0xff;
|
|
bytes[1] = (val>>16)&0xff;
|
|
bytes[0] = val>>24;
|
|
}
|
|
|
|
/*
|
|
* load 16-bit value from unaligned little endian byte array.
|
|
*/
|
|
static INLINE uint16
|
|
ltoh16_ua(void *bytes)
|
|
{
|
|
return (((uint8*)bytes)[1]<<8)+((uint8 *)bytes)[0];
|
|
}
|
|
|
|
/*
|
|
* load 32-bit value from unaligned little endian byte array.
|
|
*/
|
|
static INLINE uint32
|
|
ltoh32_ua(void *bytes)
|
|
{
|
|
return (((uint8*)bytes)[3]<<24)+(((uint8*)bytes)[2]<<16)+
|
|
(((uint8*)bytes)[1]<<8)+((uint8*)bytes)[0];
|
|
}
|
|
|
|
/*
|
|
* load 16-bit value from unaligned big(network) endian byte array.
|
|
*/
|
|
static INLINE uint16
|
|
ntoh16_ua(void *bytes)
|
|
{
|
|
return (((uint8*)bytes)[0]<<8)+((uint8*)bytes)[1];
|
|
}
|
|
|
|
/*
|
|
* load 32-bit value from unaligned big(network) endian byte array.
|
|
*/
|
|
static INLINE uint32
|
|
ntoh32_ua(void *bytes)
|
|
{
|
|
return (((uint8*)bytes)[0]<<24)+(((uint8*)bytes)[1]<<16)+
|
|
(((uint8*)bytes)[2]<<8)+((uint8*)bytes)[3];
|
|
}
|
|
|
|
#define ltoh_ua(ptr) (\
|
|
sizeof(*(ptr)) == sizeof(uint8) ? *(uint8 *)ptr : \
|
|
sizeof(*(ptr)) == sizeof(uint16) ? (((uint8 *)ptr)[1]<<8)+((uint8 *)ptr)[0] : \
|
|
(((uint8 *)ptr)[3]<<24)+(((uint8 *)ptr)[2]<<16)+(((uint8 *)ptr)[1]<<8)+((uint8 *)ptr)[0] \
|
|
)
|
|
|
|
#define ntoh_ua(ptr) (\
|
|
sizeof(*(ptr)) == sizeof(uint8) ? *(uint8 *)ptr : \
|
|
sizeof(*(ptr)) == sizeof(uint16) ? (((uint8 *)ptr)[0]<<8)+((uint8 *)ptr)[1] : \
|
|
(((uint8 *)ptr)[0]<<24)+(((uint8 *)ptr)[1]<<16)+(((uint8 *)ptr)[2]<<8)+((uint8 *)ptr)[3] \
|
|
)
|
|
|
|
#endif /* _BCMENDIAN_H_ */
|