333 lines
8.5 KiB
C
Executable File
333 lines
8.5 KiB
C
Executable File
/*
|
|
* Byte order utilities
|
|
*
|
|
* Copyright (C) 1999-2016, Broadcom Corporation
|
|
*
|
|
* Unless you and Broadcom execute a separate written software license
|
|
* agreement governing use of this software, this software is licensed to you
|
|
* under the terms of the GNU General Public License version 2 (the "GPL"),
|
|
* available at http://www.broadcom.com/licenses/GPLv2.php, with the
|
|
* following added to such license:
|
|
*
|
|
* As a special exception, the copyright holders of this software give you
|
|
* permission to link this software with independent modules, and to copy and
|
|
* distribute the resulting executable under terms of your choice, provided that
|
|
* you also meet, for each linked independent module, the terms and conditions of
|
|
* the license of that module. An independent module is a module which is not
|
|
* derived from this software. The special exception does not apply to any
|
|
* modifications of the software.
|
|
*
|
|
* Notwithstanding the above, under no circumstances may you combine this
|
|
* software in any way with any other Broadcom software provided under a license
|
|
* other than the GPL, without Broadcom's express prior written consent.
|
|
*
|
|
*
|
|
* <<Broadcom-WL-IPTag/Open:>>
|
|
*
|
|
* $Id: bcmendian.h 514727 2014-11-12 03:02:48Z $
|
|
*
|
|
* 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>
|
|
|
|
/* Reverse the bytes in a 16-bit value */
|
|
#define BCMSWAP16(val) \
|
|
((uint16)((((uint16)(val) & (uint16)0x00ffU) << 8) | \
|
|
(((uint16)(val) & (uint16)0xff00U) >> 8)))
|
|
|
|
/* Reverse the bytes in a 32-bit value */
|
|
#define BCMSWAP32(val) \
|
|
((uint32)((((uint32)(val) & (uint32)0x000000ffU) << 24) | \
|
|
(((uint32)(val) & (uint32)0x0000ff00U) << 8) | \
|
|
(((uint32)(val) & (uint32)0x00ff0000U) >> 8) | \
|
|
(((uint32)(val) & (uint32)0xff000000U) >> 24)))
|
|
|
|
/* Reverse the two 16-bit halves of a 32-bit value */
|
|
#define BCMSWAP32BY16(val) \
|
|
((uint32)((((uint32)(val) & (uint32)0x0000ffffU) << 16) | \
|
|
(((uint32)(val) & (uint32)0xffff0000U) >> 16)))
|
|
|
|
/* Reverse the bytes in a 64-bit value */
|
|
#define BCMSWAP64(val) \
|
|
((uint64)((((uint64)(val) & 0x00000000000000ffULL) << 56) | \
|
|
(((uint64)(val) & 0x000000000000ff00ULL) << 40) | \
|
|
(((uint64)(val) & 0x0000000000ff0000ULL) << 24) | \
|
|
(((uint64)(val) & 0x00000000ff000000ULL) << 8) | \
|
|
(((uint64)(val) & 0x000000ff00000000ULL) >> 8) | \
|
|
(((uint64)(val) & 0x0000ff0000000000ULL) >> 24) | \
|
|
(((uint64)(val) & 0x00ff000000000000ULL) >> 40) | \
|
|
(((uint64)(val) & 0xff00000000000000ULL) >> 56)))
|
|
|
|
/* Reverse the two 32-bit halves of a 64-bit value */
|
|
#define BCMSWAP64BY32(val) \
|
|
((uint64)((((uint64)(val) & 0x00000000ffffffffULL) << 32) | \
|
|
(((uint64)(val) & 0xffffffff00000000ULL) >> 32)))
|
|
|
|
|
|
/* Byte swapping macros
|
|
* Host <=> Network (Big Endian) for 16- and 32-bit values
|
|
* Host <=> Little-Endian for 16- and 32-bit values
|
|
*/
|
|
#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)
|
|
#define HTOL64(i) (i)
|
|
#define htol64(i) (i)
|
|
#endif /* hton16 */
|
|
|
|
#define ltoh16_buf(buf, i)
|
|
#define htol16_buf(buf, i)
|
|
|
|
/* Unaligned loads and stores in host byte order */
|
|
#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__
|
|
|
|
/* GNU macro versions avoid referencing the argument multiple times, while also
|
|
* avoiding the -fno-inline used in ROM builds.
|
|
*/
|
|
|
|
#define bcmswap16(val) ({ \
|
|
uint16 _val = (val); \
|
|
BCMSWAP16(_val); \
|
|
})
|
|
|
|
#define bcmswap32(val) ({ \
|
|
uint32 _val = (val); \
|
|
BCMSWAP32(_val); \
|
|
})
|
|
|
|
#define bcmswap64(val) ({ \
|
|
uint64 _val = (val); \
|
|
BCMSWAP64(_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 /* !__GNUC__ */
|
|
|
|
/* Inline versions avoid referencing the argument multiple times */
|
|
static INLINE uint16
|
|
bcmswap16(uint16 val)
|
|
{
|
|
return BCMSWAP16(val);
|
|
}
|
|
|
|
static INLINE uint32
|
|
bcmswap32(uint32 val)
|
|
{
|
|
return BCMSWAP32(val);
|
|
}
|
|
|
|
static INLINE uint64
|
|
bcmswap64(uint64 val)
|
|
{
|
|
return BCMSWAP64(val);
|
|
}
|
|
|
|
static INLINE uint32
|
|
bcmswap32by16(uint32 val)
|
|
{
|
|
return BCMSWAP32BY16(val);
|
|
}
|
|
|
|
/* Reverse pairs of bytes in a buffer (not for high-performance use) */
|
|
/* 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++;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 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[0] = val >> 8;
|
|
bytes[1] = val & 0xff;
|
|
}
|
|
|
|
/*
|
|
* Store 32-bit value to unaligned network-(big-)endian byte array.
|
|
*/
|
|
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;
|
|
}
|
|
|
|
/*
|
|
* Load 16-bit value from unaligned little-endian byte array.
|
|
*/
|
|
static INLINE uint16
|
|
ltoh16_ua(const void *bytes)
|
|
{
|
|
return _LTOH16_UA((const uint8 *)bytes);
|
|
}
|
|
|
|
/*
|
|
* Load 32-bit value from unaligned little-endian byte array.
|
|
*/
|
|
static INLINE uint32
|
|
ltoh32_ua(const void *bytes)
|
|
{
|
|
return _LTOH32_UA((const uint8 *)bytes);
|
|
}
|
|
|
|
/*
|
|
* Load 16-bit value from unaligned big-(network-)endian byte array.
|
|
*/
|
|
static INLINE uint16
|
|
ntoh16_ua(const void *bytes)
|
|
{
|
|
return _NTOH16_UA((const uint8 *)bytes);
|
|
}
|
|
|
|
/*
|
|
* Load 32-bit value from unaligned big-(network-)endian byte array.
|
|
*/
|
|
static INLINE uint32
|
|
ntoh32_ua(const void *bytes)
|
|
{
|
|
return _NTOH32_UA((const uint8 *)bytes);
|
|
}
|
|
|
|
#endif /* !__GNUC__ */
|
|
#endif /* !_BCMENDIAN_H_ */
|