#include <machine/asm.h>

ENTRY(bcmp)
        RETGUARD_SETUP(bcmp, r11)
        xorl    %eax,%eax               /* clear return value */

        movq    %rdx,%rcx               /* compare by words */
        shrq    $3,%rcx
        repe
        cmpsq
        jne     1f

        movq    %rdx,%rcx               /* compare remainder by bytes */
        andq    $7,%rcx
        repe
        cmpsb
        je      2f

1:      incl    %eax
2:      RETGUARD_CHECK(bcmp, r11)
        ret
        lfence
END(bcmp)