diff options
| author | Ley Foon Tan <lftan@altera.com> | 2014-11-06 10:19:44 +0300 |
|---|---|---|
| committer | Ley Foon Tan <lftan@altera.com> | 2014-12-08 07:55:52 +0300 |
| commit | 862674d4249c204ce58313ec4f59190abbc86b7e (patch) | |
| tree | 0a36821c0671a2ff6f990c098628149a04cbb9ef /arch/nios2/mm/extable.c | |
| parent | 6b8baec4d652df19be6e0997c50b9894e5ca30a8 (diff) | |
| download | linux-862674d4249c204ce58313ec4f59190abbc86b7e.tar.xz | |
nios2: MMU Fault handling
This patch adds support for the handling of the MMU faults (exception
entry code introduced by a previous patch, kernel/entry.S).
Signed-off-by: Ley Foon Tan <lftan@altera.com>
Diffstat (limited to 'arch/nios2/mm/extable.c')
| -rw-r--r-- | arch/nios2/mm/extable.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/arch/nios2/mm/extable.c b/arch/nios2/mm/extable.c new file mode 100644 index 000000000000..4d2fc5a589d0 --- /dev/null +++ b/arch/nios2/mm/extable.c @@ -0,0 +1,25 @@ +/* + * Copyright (C) 2010, Tobias Klauser <tklauser@distanz.ch> + * Copyright (C) 2009, Wind River Systems Inc + * Implemented by fredrik.markstrom@gmail.com and ivarholmqvist@gmail.com + * + * 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/module.h> +#include <linux/uaccess.h> + +int fixup_exception(struct pt_regs *regs) +{ + const struct exception_table_entry *fixup; + + fixup = search_exception_tables(regs->ea); + if (fixup) { + regs->ea = fixup->fixup; + return 1; + } + + return 0; +} |