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@@ -1,22 +1,47 @@
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#ifndef _BITS_BYTESWAP_H
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#define _BITS_BYTESWAP_H
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+/** @file
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+ *
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+ * Byte-order swapping functions
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+ *
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+ */
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+
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+#include <stdint.h>
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+
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+FILE_LICENCE ( GPL2_OR_LATER );
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+
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static inline __attribute__ (( always_inline, const )) uint16_t
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__bswap_variable_16 ( uint16_t x ) {
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__asm__ ( "xchgb %b0,%h0" : "=Q" ( x ) : "0" ( x ) );
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return x;
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}
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+static inline __attribute__ (( always_inline )) void
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+__bswap_16s ( uint16_t *x ) {
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+ __asm__ ( "rorw $8, %0" : "=g" ( *x ) : "0" ( *x ) );
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+}
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+
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static inline __attribute__ (( always_inline, const )) uint32_t
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__bswap_variable_32 ( uint32_t x ) {
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__asm__ ( "bswapl %k0" : "=r" ( x ) : "0" ( x ) );
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return x;
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}
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+static inline __attribute__ (( always_inline )) void
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+__bswap_32s ( uint32_t *x ) {
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+ __asm__ ( "bswapl %k0" : "=r" ( *x ) : "0" ( *x ) );
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+}
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+
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static inline __attribute__ (( always_inline, const )) uint64_t
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__bswap_variable_64 ( uint64_t x ) {
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__asm__ ( "bswapq %q0" : "=r" ( x ) : "0" ( x ) );
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return x;
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}
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+static inline __attribute__ (( always_inline )) void
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+__bswap_64s ( uint64_t *x ) {
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+ __asm__ ( "bswapq %q0" : "=r" ( *x ) : "0" ( *x ) );
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+}
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+
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#endif /* _BITS_BYTESWAP_H */
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