linux-sg2042/arch/sh/kernel/cpu/sh2a/ex.S

73 lines
1.1 KiB
ArmAsm

/*
* arch/sh/kernel/cpu/sh2a/ex.S
*
* The SH-2A exception vector table
*
* Copyright (C) 2008 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 no 0 to 255
exception_entry0:
no = 0
.rept 256
mov.l r1,@-sp
bra exception_trampoline0
mov #no,r1
no = no + 1
.endr
exception_trampoline0:
mov.l r0,@-sp
mov.l 1f,r0
extu.b r1,r1
jmp @r0
extu.w r1,r1
.align 2
1: .long exception_handler
! exception no 256 to 511
exception_entry1:
no = 0
.rept 256
mov.l r1,@-sp
bra exception_trampoline1
mov #no,r1
no = no + 1
.endr
exception_trampoline1:
mov.l r0,@-sp
extu.b r1,r1
movi20 #0x100,r0
add r0,r1
mov.l 1f,r0
jmp @r0
extu.w r1,r1
.align 2
1: .long exception_handler
!
! Exception Vector Base
!
.align 2
ENTRY(vbr_base)
vector = 0
.rept 256
.long exception_entry0 + vector * 6
vector = vector + 1
.endr
.rept 256
.long exception_entry1 + vector * 6
vector = vector + 1
.endr