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| author |   Yoshinori Sato <ysato@users.sourceforge.jp> | 2006-11-05 16:15:19 +0900 |
|---|---|---|
| committer |   Paul Mundt <lethal@linux-sh.org> | 2006-12-06 10:45:36 +0900 |
| commit | de39840646a223ae13a346048c280b7c871bf56e (patch) | |
| tree | aa2449880c12310ccb92540bfd63e43e8a568745 /arch/sh/kernel/cpu/sh2/ex.S | |
| parent | sh: Wire up division and address error exceptions on SH-2A. (diff) | |
| download | linux-dev-de39840646a223ae13a346048c280b7c871bf56e.tar.xz linux-dev-de39840646a223ae13a346048c280b7c871bf56e.zip | |
sh: Exception vector rework and SH-2/SH-2A support.
This splits out common bits from the existing exception handler for
use between SH-2/SH-2A and SH-3/4, and adds support for the SH-2/2A
exceptions.
Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/kernel/cpu/sh2/ex.S')
| -rw-r--r-- | arch/sh/kernel/cpu/sh2/ex.S | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/arch/sh/kernel/cpu/sh2/ex.S b/arch/sh/kernel/cpu/sh2/ex.S new file mode 100644 index 000000000000..6d285af7846c --- /dev/null +++ b/arch/sh/kernel/cpu/sh2/ex.S @@ -0,0 +1,46 @@ +/* + * 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 r0,@-sp + mov #no,r0 + bra exception_trampoline + and #0xff,r0 +no = no + 1 + .endr +exception_trampoline: + mov.l r1,@-sp + mov.l $exception_handler,r1 + jmp @r1 + + .align 2 +$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 * 8 +vector = vector + 1 + .endr |