[arm] only restore the relevant parts of cpsr in arm debug code
diff --git a/arch/arm/asm.S b/arch/arm/asm.S
index 4a31684..1b0ea1e 100644
--- a/arch/arm/asm.S
+++ b/arch/arm/asm.S
@@ -92,7 +92,7 @@
 	b		.
 #endif
 	
-	msr		cpsr, r1
+	msr		cpsr_c, r1
 
 	bx		lr