diff options
| author | David Howells <dhowells@redhat.com> | 2011-03-18 17:54:30 +0100 |
|---|---|---|
| committer | David Howells <dhowells@redhat.com> | 2011-03-18 17:54:30 +0100 |
| commit | 7f386ac3272e057fbf51e5b5712fad1a80e77125 (patch) | |
| tree | 2ddf1aff83c2b92f2aef82d4db069a1a355b47c0 /arch/mn10300/mm/cache-dbg-inv.S | |
| parent | MN10300: Introduce a general config option for kernel debugger hooks (diff) | |
| download | linux-7f386ac3272e057fbf51e5b5712fad1a80e77125.tar.xz linux-7f386ac3272e057fbf51e5b5712fad1a80e77125.zip | |
MN10300: Create general kernel debugger cache flushing
Create general kernel debugger cache flushing for MN10300 and get rid of the
old stuff that gdbstub was using.
Signed-off-by: David Howells <dhowells@redhat.com>
Diffstat (limited to 'arch/mn10300/mm/cache-dbg-inv.S')
| -rw-r--r-- | arch/mn10300/mm/cache-dbg-inv.S | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/arch/mn10300/mm/cache-dbg-inv.S b/arch/mn10300/mm/cache-dbg-inv.S new file mode 100644 index 000000000000..eba2d6dca066 --- /dev/null +++ b/arch/mn10300/mm/cache-dbg-inv.S @@ -0,0 +1,47 @@ +/* MN10300 CPU cache invalidation routines + * + * Copyright (C) 2011 Red Hat, Inc. All Rights Reserved. + * Written by David Howells (dhowells@redhat.com) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public Licence + * as published by the Free Software Foundation; either version + * 2 of the Licence, or (at your option) any later version. + */ +#include <linux/sys.h> +#include <linux/linkage.h> +#include <asm/smp.h> +#include <asm/page.h> +#include <asm/cache.h> +#include <asm/irqflags.h> +#include <asm/cacheflush.h> +#include "cache.inc" + + .am33_2 + + .globl debugger_local_cache_flushinv + +############################################################################### +# +# void debugger_local_cache_flushinv(void) +# +# Invalidate the entire icache +# +############################################################################### + ALIGN + .globl debugger_local_cache_flushinv + .type debugger_local_cache_flushinv,@function +debugger_local_cache_flushinv: + # + # we only need to invalidate the icache in this cache mode + # + mov CHCTR,a0 + movhu (a0),d0 + btst CHCTR_ICEN,d0 + beq debugger_local_cache_flushinv_end + + invalidate_icache 1 + +debugger_local_cache_flushinv_end: + ret [],0 + .size debugger_local_cache_flushinv,.-debugger_local_cache_flushinv |