diff --git a/arch/csky/kernel/entry.S b/arch/csky/kernel/entry.S
index c68cdcc..3261f46 100644
--- a/arch/csky/kernel/entry.S
+++ b/arch/csky/kernel/entry.S
@@ -93,11 +93,11 @@ csky_syscall_trace:
 	ldw	a2, (sp, LSAVE_A2)
 	ldw	a3, (sp, LSAVE_A3)
 #if defined(__CSKYABIV2__)
-	subi	sp, 8
 	ldw	r9, (sp, LSAVE_A4)
+	ldw	r10, (sp, LSAVE_A5)
+	subi	sp, 8
 	stw	r9, (sp, 0x0)
-	ldw	r9, (sp, LSAVE_A5)
-	stw	r9, (sp, 0x4)
+	stw	r10, (sp, 0x4)
 	jsr	syscallid                     /* Do system call */
 	addi	sp, 8
 #else