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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/arch/sh/kernel/cpu/sh2a/ex.S
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/* SPDX-License-Identifier: GPL-2.0

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 *

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 * arch/sh/kernel/cpu/sh2a/ex.S

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 *

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 * The SH-2A exception vector table

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 *

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 * Copyright (C) 2008 Yoshinori Sato

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 */

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#include <linux/linkage.h>

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!

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! convert Exception Vector to Exception Number

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!

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! exception no 0 to 255

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exception_entry0:

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no	=	0

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	.rept	256

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	mov.l	r1,@-sp

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	bra	exception_trampoline0

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	mov	#no,r1

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no	=	no + 1

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	.endr

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exception_trampoline0:

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	mov.l	r0,@-sp

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	mov.l	1f,r0

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	extu.b	r1,r1

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	jmp	@r0

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	  extu.w	r1,r1

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	.align	2

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1:	.long	exception_handler

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! exception no 256 to 511

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exception_entry1:

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no	=	0

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	.rept	256

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	mov.l	r1,@-sp

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	bra	exception_trampoline1

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	mov	#no,r1

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no	=	no + 1

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	.endr

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exception_trampoline1:

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	mov.l	r0,@-sp

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	extu.b	r1,r1

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	movi20	#0x100,r0

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	add	r0,r1

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	mov.l	1f,r0

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	jmp	@r0

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	  extu.w	r1,r1

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	.align	2

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1:	.long	exception_handler

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	!

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! Exception Vector Base

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!

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	.align	2

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ENTRY(vbr_base)

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vector	=	0

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	.rept	256

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	.long	exception_entry0 + vector * 6

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vector	=	vector + 1

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	.endr

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vector	=	0

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	.rept	256

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	.long	exception_entry1 + vector * 6

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vector	=	vector + 1

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	.endr

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