Add Linux-compatible rol32/ror32 functions. Amazingly, gcc will
optimise these down to the correct single "roll"/"rorl" instruction.
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#ifndef _GPXE_BITOPS_H
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#define _GPXE_BITOPS_H
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/** @file
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*
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* Bit operations
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*/
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#include <stdint.h>
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static inline uint32_t rol32 ( uint32_t data, unsigned int rotation ) {
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return ( ( data << rotation ) | ( data >> ( 32 - rotation ) ) );
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}
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static inline uint32_t ror32 ( uint32_t data, unsigned int rotation ) {
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return ( ( data >> rotation ) | ( data << ( 32 - rotation ) ) );
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}
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#endif /* _GPXE_BITOPS_H */
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