1 #ifndef _IPXE_ROTATE_H
2 #define _IPXE_ROTATE_H
3
4 /** @file
5 *
6 * Bit operations
7 */
8
9 FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
10
11 #include <stdint.h>
12
13 #define ROLx( data, rotation ) \
14 ( ( (data) << (rotation) ) | \
15 ( (data) >> ( ( 8 * sizeof (data) ) - (rotation) ) ) );
16
17 #define RORx( data, rotation ) \
18 ( ( (data) >> (rotation) ) | \
19 ( (data) << ( ( 8 * sizeof (data) ) - (rotation) ) ) );
20
21 static inline __attribute__ (( always_inline )) uint8_t
rol8(uint8_t data,unsigned int rotation)22 rol8 ( uint8_t data, unsigned int rotation ) {
23 return ROLx ( data, rotation );
24 }
25
26 static inline __attribute__ (( always_inline )) uint8_t
ror8(uint8_t data,unsigned int rotation)27 ror8 ( uint8_t data, unsigned int rotation ) {
28 return RORx ( data, rotation );
29 }
30
31 static inline __attribute__ (( always_inline )) uint16_t
rol16(uint16_t data,unsigned int rotation)32 rol16 ( uint16_t data, unsigned int rotation ) {
33 return ROLx ( data, rotation );
34 }
35
36 static inline __attribute__ (( always_inline )) uint16_t
ror16(uint16_t data,unsigned int rotation)37 ror16 ( uint16_t data, unsigned int rotation ) {
38 return RORx ( data, rotation );
39 }
40
41 static inline __attribute__ (( always_inline )) uint32_t
rol32(uint32_t data,unsigned int rotation)42 rol32 ( uint32_t data, unsigned int rotation ) {
43 return ROLx ( data, rotation );
44 }
45
46 static inline __attribute__ (( always_inline )) uint32_t
ror32(uint32_t data,unsigned int rotation)47 ror32 ( uint32_t data, unsigned int rotation ) {
48 return RORx ( data, rotation );
49 }
50
51 static inline __attribute__ (( always_inline )) uint64_t
rol64(uint64_t data,unsigned int rotation)52 rol64 ( uint64_t data, unsigned int rotation ) {
53 return ROLx ( data, rotation );
54 }
55
56 static inline __attribute__ (( always_inline )) uint64_t
ror64(uint64_t data,unsigned int rotation)57 ror64 ( uint64_t data, unsigned int rotation ) {
58 return RORx ( data, rotation );
59 }
60
61 static inline __attribute__ (( always_inline )) unsigned long
roll(unsigned long data,unsigned int rotation)62 roll ( unsigned long data, unsigned int rotation ) {
63 return ROLx ( data, rotation );
64 }
65
66 static inline __attribute__ (( always_inline )) unsigned long
rorl(unsigned long data,unsigned int rotation)67 rorl ( unsigned long data, unsigned int rotation ) {
68 return RORx ( data, rotation );
69 }
70
71 #endif /* _IPXE_ROTATE_H */
72