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/*
* Byte order utilities
*
* $Copyright Open Broadcom Corporation$
*
* $Id: bcmendian.h 241182 2011-02-17 21:50:03Z $
*
* This file by default provides proper behavior on little-endian architectures.
* On big-endian architectures, IL_BIGENDIAN should be defined.
*/
#ifndef _BCMENDIAN_H_
#define _BCMENDIAN_H_
#include <typedefs.h>
#define BCMSWAP16(val) \
((uint16)((((uint16)(val) & (uint16)0x00ffU) << 8) | \
(((uint16)(val) & (uint16)0xff00U) >> 8)))
#define BCMSWAP32(val) \
((uint32)((((uint32)(val) & (uint32)0x000000ffU) << 24) | \
(((uint32)(val) & (uint32)0x0000ff00U) << 8) | \
(((uint32)(val) & (uint32)0x00ff0000U) >> 8) | \
(((uint32)(val) & (uint32)0xff000000U) >> 24)))
#define BCMSWAP32BY16(val) \
((uint32)((((uint32)(val) & (uint32)0x0000ffffU) << 16) | \
(((uint32)(val) & (uint32)0xffff0000U) >> 16)))
#ifndef hton16
#define HTON16(i) BCMSWAP16(i)
#define hton16(i) bcmswap16(i)
#define HTON32(i) BCMSWAP32(i)
#define hton32(i) bcmswap32(i)
#define NTOH16(i) BCMSWAP16(i)
#define ntoh16(i) bcmswap16(i)
#define NTOH32(i) BCMSWAP32(i)
#define ntoh32(i) bcmswap32(i)
#define LTOH16(i) (i)
#define ltoh16(i) (i)
#define LTOH32(i) (i)
#define ltoh32(i) (i)
#define HTOL16(i) (i)
#define htol16(i) (i)
#define HTOL32(i) (i)
#define htol32(i) (i)
#endif
#define ltoh16_buf(buf, i)
#define htol16_buf(buf, i)
#define load32_ua(a) ltoh32_ua(a)
#define store32_ua(a, v) htol32_ua_store(v, a)
#define load16_ua(a) ltoh16_ua(a)
#define store16_ua(a, v) htol16_ua_store(v, a)
#define _LTOH16_UA(cp) ((cp)[0] | ((cp)[1] << 8))
#define _LTOH32_UA(cp) ((cp)[0] | ((cp)[1] << 8) | ((cp)[2] << 16) | ((cp)[3] << 24))
#define _NTOH16_UA(cp) (((cp)[0] << 8) | (cp)[1])
#define _NTOH32_UA(cp) (((cp)[0] << 24) | ((cp)[1] << 16) | ((cp)[2] << 8) | (cp)[3])
#define ltoh_ua(ptr) \
(sizeof(*(ptr)) == sizeof(uint8) ? *(const uint8 *)(ptr) : \
sizeof(*(ptr)) == sizeof(uint16) ? _LTOH16_UA((const uint8 *)(ptr)) : \
sizeof(*(ptr)) == sizeof(uint32) ? _LTOH32_UA((const uint8 *)(ptr)) : \
*(uint8 *)0)
#define ntoh_ua(ptr) \
(sizeof(*(ptr)) == sizeof(uint8) ? *(const uint8 *)(ptr) : \
sizeof(*(ptr)) == sizeof(uint16) ? _NTOH16_UA((const uint8 *)(ptr)) : \
sizeof(*(ptr)) == sizeof(uint32) ? _NTOH32_UA((const uint8 *)(ptr)) : \
*(uint8 *)0)
#ifdef __GNUC__
#define bcmswap16(val) ({ \
uint16 _val = (val); \
BCMSWAP16(_val); \
})
#define bcmswap32(val) ({ \
uint32 _val = (val); \
BCMSWAP32(_val); \
})
#define bcmswap32by16(val) ({ \
uint32 _val = (val); \
BCMSWAP32BY16(_val); \
})
#define bcmswap16_buf(buf, len) ({ \
uint16 *_buf = (uint16 *)(buf); \
uint _wds = (len) / 2; \
while (_wds--) { \
*_buf = bcmswap16(*_buf); \
_buf++; \
} \
})
#define htol16_ua_store(val, bytes) ({ \
uint16 _val = (val); \
uint8 *_bytes = (uint8 *)(bytes); \
_bytes[0] = _val & 0xff; \
_bytes[1] = _val >> 8; \
})
#define htol32_ua_store(val, bytes) ({ \
uint32 _val = (val); \
uint8 *_bytes = (uint8 *)(bytes); \
_bytes[0] = _val & 0xff; \
_bytes[1] = (_val >> 8) & 0xff; \
_bytes[2] = (_val >> 16) & 0xff; \
_bytes[3] = _val >> 24; \
})
#define hton16_ua_store(val, bytes) ({ \
uint16 _val = (val); \
uint8 *_bytes = (uint8 *)(bytes); \
_bytes[0] = _val >> 8; \
_bytes[1] = _val & 0xff; \
})
#define hton32_ua_store(val, bytes) ({ \
uint32 _val = (val); \
uint8 *_bytes = (uint8 *)(bytes); \
_bytes[0] = _val >> 24; \
_bytes[1] = (_val >> 16) & 0xff; \
_bytes[2] = (_val >> 8) & 0xff; \
_bytes[3] = _val & 0xff; \
})
#define ltoh16_ua(bytes) ({ \
const uint8 *_bytes = (const uint8 *)(bytes); \
_LTOH16_UA(_bytes); \
})
#define ltoh32_ua(bytes) ({ \
const uint8 *_bytes = (const uint8 *)(bytes); \
_LTOH32_UA(_bytes); \
})
#define ntoh16_ua(bytes) ({ \
const uint8 *_bytes = (const uint8 *)(bytes); \
_NTOH16_UA(_bytes); \
})
#define ntoh32_ua(bytes) ({ \
const uint8 *_bytes = (const uint8 *)(bytes); \
_NTOH32_UA(_bytes); \
})
#else
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);
}
static INLINE void
bcmswap16_buf(uint16 *buf, uint len)
{
len = len / 2;
while (len--) {
*buf = bcmswap16(*buf);
buf++;
}
}
static INLINE void
htol16_ua_store(uint16 val, uint8 *bytes)
{
bytes[0] = val & 0xff;
bytes[1] = val >> 8;
}
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;
}
static INLINE void
hton16_ua_store(uint16 val, uint8 *bytes)
{
bytes[0] = val >> 8;
bytes[1] = val & 0xff;
}
static INLINE void
hton32_ua_store(uint32 val, uint8 *bytes)
{
bytes[0] = val >> 24;
bytes[1] = (val >> 16) & 0xff;
bytes[2] = (val >> 8) & 0xff;
bytes[3] = val & 0xff;
}
static INLINE uint16
ltoh16_ua(const void *bytes)
{
return _LTOH16_UA((const uint8 *)bytes);
}
static INLINE uint32
ltoh32_ua(const void *bytes)
{
return _LTOH32_UA((const uint8 *)bytes);
}
static INLINE uint16
ntoh16_ua(const void *bytes)
{
return _NTOH16_UA((const uint8 *)bytes);
}
static INLINE uint32
ntoh32_ua(const void *bytes)
{
return _NTOH32_UA((const uint8 *)bytes);
}
#endif
#endif
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