Alessandro Rubini a écrit :

From: Alessandro Rubini rubini@unipv.it

Signed-off-by: Alessandro Rubini rubini@unipv.it Acked-by: Andrea Gallo andrea.gallo@stericsson.com

---

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 ) {

This can be factorized as (a & 3) | (b & 3) | (c & 3) is equivalent to (a | b | c) & 3. GCC is pretty smart but I doubt that it will pick this up :(

• count /= 4;
  

• while (count--)
  

• 	*d32++ = *s32++;
  

• return dest;
  

• }
• /* else, use 1-byte copy */ while (count--) *tmp++ = *s++;

Cheers, Chris