From: Alessandro Rubini <[email protected]>
Signed-off-by: Alessandro Rubini <[email protected]>
Acked-by: Andrea Gallo <[email protected]>
---
lib_generic/string.c | 11 ++++++++++-
1 files changed, 10 insertions(+), 1 deletions(-)
diff --git a/lib_generic/string.c b/lib_generic/string.c
index 181eda6..fdccab6 100644
--- a/lib_generic/string.c
+++ b/lib_generic/string.c
@@ -449,7 +449,16 @@ char * bcopy(const char * src, char * dest, int count)
void * memcpy(void * dest,const void *src,size_t count)
{
char *tmp = (char *) dest, *s = (char *) src;
+ u32 *d32 = (u32 *)dest, *s32 = (u32 *) src;
+ /* if both are aligned, use 32-bit copy */
+ if ( (((int)dest & 3) | ((int)src & 3) | (count & 3)) == 0 ) {
+ count /= 4;
+ while (count--)
+ *d32++ = *s32++;
+ return dest;
+ }
+ /* else, use 1-byte copy */
while (count--)
*tmp++ = *s++;
--
1.5.6.5
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