diff options
| -rw-r--r-- | src/include/ipxe/rotate.h | 34 |
1 files changed, 26 insertions, 8 deletions
diff --git a/src/include/ipxe/rotate.h b/src/include/ipxe/rotate.h index b5693e3..4dea09a 100644 --- a/src/include/ipxe/rotate.h +++ b/src/include/ipxe/rotate.h @@ -10,44 +10,62 @@ FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL ); #include <stdint.h> +#define ROLx( data, rotation ) \ + ( ( (data) << (rotation) ) | \ + ( (data) >> ( ( 8 * sizeof (data) ) - (rotation) ) ) ); + +#define RORx( data, rotation ) \ + ( ( (data) >> (rotation) ) | \ + ( (data) << ( ( 8 * sizeof (data) ) - (rotation) ) ) ); + static inline __attribute__ (( always_inline )) uint8_t rol8 ( uint8_t data, unsigned int rotation ) { - return ( ( data << rotation ) | ( data >> ( 8 - rotation ) ) ); + return ROLx ( data, rotation ); } static inline __attribute__ (( always_inline )) uint8_t ror8 ( uint8_t data, unsigned int rotation ) { - return ( ( data >> rotation ) | ( data << ( 8 - rotation ) ) ); + return RORx ( data, rotation ); } static inline __attribute__ (( always_inline )) uint16_t rol16 ( uint16_t data, unsigned int rotation ) { - return ( ( data << rotation ) | ( data >> ( 16 - rotation ) ) ); + return ROLx ( data, rotation ); } static inline __attribute__ (( always_inline )) uint16_t ror16 ( uint16_t data, unsigned int rotation ) { - return ( ( data >> rotation ) | ( data << ( 16 - rotation ) ) ); + return RORx ( data, rotation ); } static inline __attribute__ (( always_inline )) uint32_t rol32 ( uint32_t data, unsigned int rotation ) { - return ( ( data << rotation ) | ( data >> ( 32 - rotation ) ) ); + return ROLx ( data, rotation ); } static inline __attribute__ (( always_inline )) uint32_t ror32 ( uint32_t data, unsigned int rotation ) { - return ( ( data >> rotation ) | ( data << ( 32 - rotation ) ) ); + return RORx ( data, rotation ); } static inline __attribute__ (( always_inline )) uint64_t rol64 ( uint64_t data, unsigned int rotation ) { - return ( ( data << rotation ) | ( data >> ( 64 - rotation ) ) ); + return ROLx ( data, rotation ); } static inline __attribute__ (( always_inline )) uint64_t ror64 ( uint64_t data, unsigned int rotation ) { - return ( ( data >> rotation ) | ( data << ( 64 - rotation ) ) ); + return RORx ( data, rotation ); +} + +static inline __attribute__ (( always_inline )) unsigned long +roll ( unsigned long data, unsigned int rotation ) { + return ROLx ( data, rotation ); +} + +static inline __attribute__ (( always_inline )) unsigned long +rorl ( unsigned long data, unsigned int rotation ) { + return RORx ( data, rotation ); } #endif /* _IPXE_ROTATE_H */ |