diff b5625c72f387c5aca7f25c2eb1cbaf01007a9aae uncommitted
--- a/atomic-386.s
+++ b/atomic-386.s
@@ -18,8 +18,10 @@
 TEXT agetv+0(SB),1,$0
 	MOVL	r+0(FP), AX
 	MOVL	p+4(FP), BX
-	FMOVD	(BX), F0
-	FMOVDP	F0, (AX)
+	// movq (%ebx), %mm0
+	// movq %mm0, (%eax)
+	BYTE $0x0f; BYTE $0x6f; BYTE $0x03
+	BYTE $0x0f; BYTE $0x7f; BYTE $0x00
 	RET
 
 /*  set variants */