runtime: fix openbsd nanotime?

TBR=r
CC=golang-dev
https://golang.org/cl/5353041

diff --git a/src/pkg/runtime/openbsd/amd64/sys.s b/src/pkg/runtime/openbsd/amd64/sys.s
index dfbb2547fafebf5ca43fe665006cc238c68d23ac..7bb44d6a953492b6bf219f0b8946906bd9861120 100644 (file)
--- a/src/pkg/runtime/openbsd/amd64/sys.s
+++ b/src/pkg/runtime/openbsd/amd64/sys.s
@@ -139,7 +139,7 @@ TEXT runtime·nanotime(SB),7,$32
        MOVL    $116, AX                // sys_gettimeofday
        SYSCALL
        MOVQ    8(SP), AX               // sec
-       MOVL    16(SP), BX              // usec
+       MOVL    16(SP), DX      // usec
 
        // sec is in AX, usec in DX
        // return nsec in AX