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[x86_64] Use memory address constraint in __bswap_16s() 

Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown 2012-03-04 21:46:45 +00:00
parent 732bea2f88
commit 3b689e531d
1 changed files with 1 additions and 1 deletions
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2
src/arch/x86_64/include/bits/byteswap.h
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@ -19,7 +19,7 @@ __bswap_variable_16 ( uint16_t x ) {
static inline __attribute__ (( always_inline )) void
__bswap_16s ( uint16_t *x ) {
__asm__ ( "rorw $8, %0" : "=g" ( *x ) : "0" ( *x ) );
__asm__ ( "rorw $8, %0" : "+m" ( *x ) );
}
static inline __attribute__ (( always_inline, const )) uint32_t