1
linux/arch/sh/kernel/cpu/sh2/ex.S
Yoshinori Sato 6e80f5e8c4 sh2(A) exception handler update
This patch is

By sh2
- Remove duplicate code
- Reduce stack usage
- Cleanup and little optimize

By sh2a
- Add missing handler(256 to 511)
- Use sh2a instructions handler

Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-07-28 18:10:34 +09:00

48 lines
821 B
ArmAsm

/*
* arch/sh/kernel/cpu/sh2/ex.S
*
* The SH-2 exception vector table
*
* Copyright (C) 2005 Yoshinori Sato
*
* 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>
!
! convert Exception Vector to Exception Number
!
exception_entry:
no = 0
.rept 256
mov.l r1,@-sp
bra exception_trampoline
mov #no,r1
no = no + 1
.endr
exception_trampoline:
mov.l r0,@-sp
mov.l $exception_handler,r0
extu.b r1,r1
jmp @r0
extu.w r1,r1
.align 2
$exception_entry:
.long exception_entry
$exception_handler:
.long exception_handler
!
! Exception Vector Base
!
.align 2
ENTRY(vbr_base)
vector = 0
.rept 256
.long exception_entry + vector * 6
vector = vector + 1
.endr