sh: Share exception vector table for SH-3/4.

The only difference between these at the moment are the FPU
exceptions, and these are hidden away under CONFIG_SH_FPU
(which is only set for the SH-4 case anyways..).

This consolidates the two tables, and updates SH-4 to use
the updated copy.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

arch/sh/kernel/cpu/sh3/ex.S

 /*
  *  arch/sh/kernel/cpu/sh3/ex.S
  *
- *  The SH-3 exception vector table.
+ *  The SH-3 and SH-4 exception vector table.
 
  *  Copyright (C) 1999, 2000, 2002  Niibe Yutaka
  *  Copyright (C) 2003 - 2006  Paul Mundt
@@ -9,7 +9,6 @@
  * This file is subject to the terms and conditions of the GNU General Public
  * License.  See the file "COPYING" in the main directory of this archive
  * for more details.
- *
  */
 #include <linux/linkage.h>
 
@@ -36,7 +35,11 @@ ENTRY(exception_handling_table)
 	.long	exception_error	! address error load
 	.long	exception_error	! address error store	/* 100 */
 #endif
-	.long	exception_error	! fpu_exception	/* 120 */
+#if defined(CONFIG_SH_FPU)
+	.long	do_fpu_error		/* 120 */
+#else
+	.long	exception_error		/* 120 */
+#endif
 	.long	exception_error		/* 140 */
 	.long	system_call	! Unconditional Trap	 /* 160 */
 	.long	exception_error	! reserved_instruction (filled by trap_init) /* 180 */

arch/sh/kernel/cpu/sh4/Makefile

@@ -2,8 +2,8 @@
 # Makefile for the Linux/SuperH SH-4 backends.
 #
 
-obj-y	:= ex.o probe.o common.o
-common-y	+= $(addprefix ../sh3/, entry.o)
+obj-y	:= probe.o common.o
+common-y	+= $(addprefix ../sh3/, entry.o ex.o)
 
 obj-$(CONFIG_SH_FPU)			+= fpu.o
 obj-$(CONFIG_SH_STORE_QUEUES)		+= sq.o

arch/sh/kernel/cpu/sh4/ex.S

-/*
- *  arch/sh/kernel/cpu/sh4/ex.S
- *
- *  The SH-4 exception vector table.
-
- *  Copyright (C) 1999, 2000, 2002  Niibe Yutaka
- *  Copyright (C) 2003 - 2006  Paul Mundt
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- */
-#include <linux/linkage.h>
-
-	.align 2
-	.data
-
-ENTRY(exception_handling_table)
-	.long	exception_error		/* 000 */
-	.long	exception_error
-#if defined(CONFIG_MMU)
-	.long	tlb_miss_load		/* 040 */
-	.long	tlb_miss_store
-	.long	initial_page_write
-	.long	tlb_protection_violation_load
-	.long	tlb_protection_violation_store
-	.long	address_error_load
-	.long	address_error_store	/* 100 */
-#else
-	.long	exception_error	! tlb miss load		/* 040 */
-	.long	exception_error	! tlb miss store
-	.long	exception_error	! initial page write
-	.long	exception_error	! tlb prot violation load
-	.long	exception_error	! tlb prot violation store
-	.long	exception_error	! address error load
-	.long	exception_error	! address error store	/* 100 */
-#endif
-#if defined(CONFIG_SH_FPU)
-	.long	do_fpu_error		/* 120 */
-#else
-	.long	exception_error		/* 120 */
-#endif
-	.long	exception_error		/* 140 */
-	.long	system_call	! Unconditional Trap	 /* 160 */
-	.long	exception_error	! reserved_instruction (filled by trap_init) /* 180 */
-	.long	exception_error	! illegal_slot_instruction (filled by trap_init) /*1A0*/
-ENTRY(nmi_slot)
-#if defined (CONFIG_KGDB_NMI)
-	.long	debug_enter	/* 1C0 */	! Allow trap to debugger
-#else
-	.long	exception_none	/* 1C0 */	! Not implemented yet
-#endif
-ENTRY(user_break_point_trap)
-	.long	break_point_trap	/* 1E0 */
-
-	/*
-	 * Pad the remainder of the table out, exceptions residing in far
-	 * away offsets can be manually inserted in to their appropriate
-	 * location via set_exception_table_{evt,vec}().
-	 */
-	.balign	4096,0,4096