/* * local version of endian.h - byte order defines * * Copyright 2007, 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 1.1.1.11 2007/05/31 08:00:41 michael Exp $ */ #ifndef _BCMENDIAN_H_ #define _BCMENDIAN_H_ #include /* 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_ */