1 files changed, 10 insertions, 9 deletions

diff --git a/tools/KSE/ksetest/kse_asm.S b/tools/KSE/ksetest/kse_asm.S
index d568988a71414..79859d8d60a0d 100644
--- a/tools/KSE/ksetest/kse_asm.S
+++ b/tools/KSE/ksetest/kse_asm.S
@@ -62,7 +62,7 @@ ENTRY(uts_to_thread)
 	movl	$-1, %eax		/* bzzzt, invalid context */
 	jmp	5f
 2:	movl	8(%esp), %eax		/* get address of curthreadp */
-	movl	%edx, (%eax)		/* we're now the current thread */
+	movl	%edx, %ebx		/* save the pointer for later */
 	/*
 	 * From here on, we don't touch the old stack.
 	 */
@@ -85,14 +85,15 @@ ENTRY(uts_to_thread)
 	jmp	4f
 3:	fninit
 	fldcw	MC_FP_CW_OFFSET(%edx)
-4:	movl	48(%edx), %eax		/* restore ax, bx, cx */
-	movl	36(%edx), %ebx
-	movl	44(%edx), %ecx
-	pushl	68(%edx)		/* flags on stack */
-	pushl	40(%edx)		/* %edx on stack  */
-	popl	%edx			/* %edx off stack */
-	popf				/* flags off stack */
-5:	ret				/* %eip off stack */
+4:	pushl	68(%edx)		/* flags */
+	pushl	48(%edx)		/* eax */
+	pushl	36(%edx)		/* ebx */
+	movl	40(%edx), %edx		/* edx */
+	movl	%ebx, (%eax)		/* <---- set new mailbox pointer */
+	popl	%ebx
+	popl	%eax
+	popf
+5:	ret
 
 /*
  * int thread_to_uts(struct kse_thr_mailbox *tm, struct kse_mailbox *km);