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author | Greg Kroah-Hartman <gregkh@suse.de> | 2011-02-24 11:36:31 -0800 |
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committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-02-24 11:36:31 -0800 |
commit | f227e08b71b9c273eaa29a57370a3a5b833aa382 (patch) | |
tree | 9f1483776a2bde3bb1a6bd744e69acf19f6f3428 /arch/m68knommu/lib/memmove.c | |
parent | fec38d1752c01ad72789bac9f1a128f7e933735d (diff) | |
parent | f5412be599602124d2bdd49947b231dd77c0bf99 (diff) | |
download | talos-op-linux-f227e08b71b9c273eaa29a57370a3a5b833aa382.tar.gz talos-op-linux-f227e08b71b9c273eaa29a57370a3a5b833aa382.zip |
Merge 2.6.38-rc6 into tty-next
This was to resolve a merge issue with drivers/char/Makefile and
drivers/tty/serial/68328serial.c
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'arch/m68knommu/lib/memmove.c')
-rw-r--r-- | arch/m68knommu/lib/memmove.c | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/arch/m68knommu/lib/memmove.c b/arch/m68knommu/lib/memmove.c new file mode 100644 index 000000000000..b3dcfe9dab7e --- /dev/null +++ b/arch/m68knommu/lib/memmove.c @@ -0,0 +1,105 @@ +/* + * 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. + */ + +#define __IN_STRING_C + +#include <linux/module.h> +#include <linux/string.h> + +void *memmove(void *dest, const void *src, size_t n) +{ + void *xdest = dest; + size_t temp; + + if (!n) + return xdest; + + if (dest < src) { + if ((long)dest & 1) { + char *cdest = dest; + const char *csrc = src; + *cdest++ = *csrc++; + dest = cdest; + src = csrc; + n--; + } + if (n > 2 && (long)dest & 2) { + short *sdest = dest; + const short *ssrc = src; + *sdest++ = *ssrc++; + dest = sdest; + src = ssrc; + n -= 2; + } + temp = n >> 2; + if (temp) { + long *ldest = dest; + const long *lsrc = src; + temp--; + do + *ldest++ = *lsrc++; + while (temp--); + dest = ldest; + src = lsrc; + } + if (n & 2) { + short *sdest = dest; + const short *ssrc = src; + *sdest++ = *ssrc++; + dest = sdest; + src = ssrc; + } + if (n & 1) { + char *cdest = dest; + const char *csrc = src; + *cdest = *csrc; + } + } else { + dest = (char *)dest + n; + src = (const char *)src + n; + if ((long)dest & 1) { + char *cdest = dest; + const char *csrc = src; + *--cdest = *--csrc; + dest = cdest; + src = csrc; + n--; + } + if (n > 2 && (long)dest & 2) { + short *sdest = dest; + const short *ssrc = src; + *--sdest = *--ssrc; + dest = sdest; + src = ssrc; + n -= 2; + } + temp = n >> 2; + if (temp) { + long *ldest = dest; + const long *lsrc = src; + temp--; + do + *--ldest = *--lsrc; + while (temp--); + dest = ldest; + src = lsrc; + } + if (n & 2) { + short *sdest = dest; + const short *ssrc = src; + *--sdest = *--ssrc; + dest = sdest; + src = ssrc; + } + if (n & 1) { + char *cdest = dest; + const char *csrc = src; + *--cdest = *--csrc; + } + } + return xdest; +} +EXPORT_SYMBOL(memmove); |