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author | 2015-08-04 12:17:53 -0700 | |
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committer | 2015-08-04 15:44:42 -0700 | |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/arch/nios2/lib/memmove.c | |
parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/arch/nios2/lib/memmove.c')
-rw-r--r-- | kernel/arch/nios2/lib/memmove.c | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/kernel/arch/nios2/lib/memmove.c b/kernel/arch/nios2/lib/memmove.c new file mode 100644 index 000000000..c65ef517e --- /dev/null +++ b/kernel/arch/nios2/lib/memmove.c @@ -0,0 +1,82 @@ +/* + * Copyright (C) 2011 Tobias Klauser <tklauser@distanz.ch> + * Copyright (C) 2004 Microtronix Datacom Ltd + * + * 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/types.h> +#include <linux/string.h> + +#ifdef __HAVE_ARCH_MEMMOVE +void *memmove(void *d, const void *s, size_t count) +{ + unsigned long dst, src; + + if (!count) + return d; + + if (d < s) { + dst = (unsigned long) d; + src = (unsigned long) s; + + if ((count < 8) || ((dst ^ src) & 3)) + goto restup; + + if (dst & 1) { + *(char *)dst++ = *(char *)src++; + count--; + } + if (dst & 2) { + *(short *)dst = *(short *)src; + src += 2; + dst += 2; + count -= 2; + } + while (count > 3) { + *(long *)dst = *(long *)src; + src += 4; + dst += 4; + count -= 4; + } +restup: + while (count--) + *(char *)dst++ = *(char *)src++; + } else { + dst = (unsigned long) d + count; + src = (unsigned long) s + count; + + if ((count < 8) || ((dst ^ src) & 3)) + goto restdown; + + if (dst & 1) { + src--; + dst--; + count--; + *(char *)dst = *(char *)src; + } + if (dst & 2) { + src -= 2; + dst -= 2; + count -= 2; + *(short *)dst = *(short *)src; + } + while (count > 3) { + src -= 4; + dst -= 4; + count -= 4; + *(long *)dst = *(long *)src; + } +restdown: + while (count--) { + src--; + dst--; + *(char *)dst = *(char *)src; + } + } + + return d; +} +#endif /* __HAVE_ARCH_MEMMOVE */ |