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 | 16 +++++++++++++++-
1 files changed, 15 insertions(+), 1 deletions(-)
diff --git a/lib_generic/string.c b/lib_generic/string.c
index fdccab6..68e0255 100644
--- a/lib_generic/string.c
+++ b/lib_generic/string.c
@@ -404,7 +404,21 @@ char *strswab(const char *s)
void * memset(void * s,int c,size_t count)
{
char *xs = (char *) s;
+ u32 *s32 = (u32 *) s;
+ int c32 = 0; /* most common case */
+ /* do it 32 bits at a time if possible */
+ if ( ((count & 3) | ((int)s & 3)) == 0) {
+ count /= 4;
+ if (c) { /* not 0: build 32-bit value */
+ c32 = c | (c<<8);
+ c32 |= c32 << 16;
+ }
+ while (count--)
+ *s32++ = c32;
+ return s;
+ }
+ /* else, fill 8 bits at a time */
while (count--)
*xs++ = c;
--
1.5.6.5
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