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[crypto] Use standard bit-rotation functions

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Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2012-03-21 14:13:15 +00:00
parent cf78afa5c5
commit c76afb3605
4 changed files with 11 additions and 37 deletions
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12
src/include/ipxe/rotate.h
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@@ -10,19 +10,23 @@ FILE_LICENCE ( GPL2_OR_LATER );
#include <stdint.h>
static inline uint32_t rol32 ( uint32_t data, unsigned int rotation ) {
static inline __attribute__ (( always_inline )) uint32_t
rol32 ( uint32_t data, unsigned int rotation ) {
return ( ( data << rotation ) | ( data >> ( 32 - rotation ) ) );
}
static inline uint32_t ror32 ( uint32_t data, unsigned int rotation ) {
static inline __attribute__ (( always_inline )) uint32_t
ror32 ( uint32_t data, unsigned int rotation ) {
return ( ( data >> rotation ) | ( data << ( 32 - rotation ) ) );
}
static inline uint64_t rol64 ( uint64_t data, unsigned int rotation ) {
static inline __attribute__ (( always_inline )) uint64_t
rol64 ( uint64_t data, unsigned int rotation ) {
return ( ( data << rotation ) | ( data >> ( 64 - rotation ) ) );
}
static inline uint64_t ror64 ( uint64_t data, unsigned int rotation ) {
static inline __attribute__ (( always_inline )) uint64_t
ror64 ( uint64_t data, unsigned int rotation ) {
return ( ( data >> rotation ) | ( data << ( 64 - rotation ) ) );
}