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 | 17 ++++++++++++++++- 1 files changed, 16 insertions(+), 1 deletions(-)
diff --git a/lib_generic/string.c b/lib_generic/string.c index 9911941..5f7aff9 100644 --- a/lib_generic/string.c +++ b/lib_generic/string.c @@ -404,7 +404,22 @@ char *strswab(const char *s) void * memset(void * s,int c,size_t count) { char *xs = (char *) s; - + unsigned long *sl = (unsigned long *) s; + unsigned long cl = 0; + int i; + + /* do it one word at a time (32 bits or 64 bits) if possible */ + if ( ((count | (int)s) & (sizeof(long) - 1)) == 0) { + count /= sizeof(long); + for (i=0; i<sizeof(long); ++i) { + cl <<= 8; + cl |= c & 0xff; + } + while (count--) + *sl++ = cl; + return s; + } + /* else, fill 8 bits at a time */ while (count--) *xs++ = c;