From: Alessandro Rubini <rub...@unipv.it>
Signed-off-by: Alessandro Rubini <rub...@unipv.it>
Acked-by: Andrea Gallo <andrea.ga...@stericsson.com>
---
lib_generic/string.c | 17 +++++++++++++----
1 files changed, 13 insertions(+), 4 deletions(-)
diff --git a/lib_generic/string.c b/lib_generic/string.c
index 181eda6..9911941 100644
--- a/lib_generic/string.c
+++ b/lib_generic/string.c
@@ -446,12 +446,21 @@ char * bcopy(const char * src, char * dest, int count)
* You should not use this function to access IO space, use memcpy_toio()
* or memcpy_fromio() instead.
*/
-void * memcpy(void * dest,const void *src,size_t count)
+void * memcpy(void *dest, const void *src, size_t count)
{
- char *tmp = (char *) dest, *s = (char *) src;
+ char *d8 = (char *)dest, *s8 = (char *)src;
+ unsigned long *dl = (unsigned long *)dest, *sl = (unsigned long *)src;
+ /* if all data is aligned (common case), copy a word at a time */
+ if ( (((int)dest | (int)src | count) & (sizeof(long) - 1)) == 0) {
+ count /= sizeof(unsigned long);
+ while (count--)
+ *dl++ = *sl++;
+ return dest;
+ }
+ /* else, use 1-byte copy */
while (count--)
- *tmp++ = *s++;
+ *d8++ = *s8++;
return dest;
}
--
1.6.0.2
_______________________________________________
U-Boot mailing list
U-Boot@lists.denx.de
http://lists.denx.de/mailman/listinfo/u-boot
