blob: 1e22d0941a1a9eeee1d32cc89112d7868043dc48 [file] [log] [blame]
#ifndef _BITS_BYTESWAP_H
#define _BITS_BYTESWAP_H
/** @file
*
* Byte-order swapping functions
*
*/
#include <stdint.h>
FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
static inline __attribute__ (( always_inline, const )) uint16_t
__bswap_variable_16 ( uint16_t x ) {
__asm__ ( "revb.2h %0, %1" : "=r" ( x ) : "r" ( x ) );
return x;
}
static inline __attribute__ (( always_inline )) void
__bswap_16s ( uint16_t *x ) {
*x = __bswap_variable_16 ( *x );
}
static inline __attribute__ (( always_inline, const )) uint32_t
__bswap_variable_32 ( uint32_t x ) {
__asm__ ( "revb.2w %0, %1" : "=r" ( x ) : "r" ( x ) );
return x;
}
static inline __attribute__ (( always_inline )) void
__bswap_32s ( uint32_t *x ) {
*x = __bswap_variable_32 ( *x );
}
static inline __attribute__ (( always_inline, const )) uint64_t
__bswap_variable_64 ( uint64_t x ) {
__asm__ ( "revb.d %0, %1" : "=r" ( x ) : "r" ( x ) );
return x;
}
static inline __attribute__ (( always_inline )) void
__bswap_64s ( uint64_t *x ) {
*x = __bswap_variable_64 ( *x );
}
#endif