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src/arch/x86_64/include/bits/byteswap.h
48 строк
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Michael Brown
[build] Mark core files as permitted for UEFI Secure Boot
14 янв 2026, 16:25
14 янв 2026, 16:25
6cccb3b
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#ifndef _BITS_BYTESWAP_H #define _BITS_BYTESWAP_H /** @file * * Byte-order swapping functions * */ #include <stdint.h> FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL ); FILE_SECBOOT ( PERMITTED ); static inline __attribute__ (( always_inline, const )) uint16_t __bswap_variable_16 ( uint16_t x ) { __asm__ ( "xchgb %b0,%h0" : "=Q" ( x ) : "0" ( x ) ); return x; } static inline __attribute__ (( always_inline )) void __bswap_16s ( uint16_t *x ) { __asm__ ( "rorw $8, %0" : "+m" ( *x ) ); } static inline __attribute__ (( always_inline, const )) uint32_t __bswap_variable_32 ( uint32_t x ) { __asm__ ( "bswapl %k0" : "=r" ( x ) : "0" ( x ) ); return x; } static inline __attribute__ (( always_inline )) void __bswap_32s ( uint32_t *x ) { __asm__ ( "bswapl %k0" : "=r" ( *x ) : "0" ( *x ) ); } static inline __attribute__ (( always_inline, const )) uint64_t __bswap_variable_64 ( uint64_t x ) { __asm__ ( "bswapq %q0" : "=r" ( x ) : "0" ( x ) ); return x; } static inline __attribute__ (( always_inline )) void __bswap_64s ( uint64_t *x ) { __asm__ ( "bswapq %q0" : "=r" ( *x ) : "0" ( *x ) ); } #endif /* _BITS_BYTESWAP_H */