sh: Update SH-2 to use the debug trap jump table.

Signed-off-by: NYoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

arch/sh/kernel/cpu/sh2/entry.S

@@ -178,12 +178,10 @@ interrupt_entry:
 8:	.long	do_exception_error
 	
 trap_entry:
-	/* verbose BUG trapa entry check */
-	mov	#0x3e,r8
-	cmp/ge	r8,r9
-	bf/s	1f
-	 add	#-0x10,r9
-	add	#0x10,r9
+	mov	#0x30,r8
+	cmp/ge	r8,r9		! vector 0x20-0x2f is systemcall
+	bt	1f
+	add	#-0x10,r9	! convert SH2 to SH3/4 ABI
 1:	
 	shll2	r9			! TRA
 	mov	#OFF_TRA,r8