From ab4458bdb5074ababe09f2538cb9f25901121ebb Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Sun, 2 Apr 2017 09:50:28 -0600 Subject: string: Provide a slimmed-down memset() Most of the time the optimised memset() is what we want. For extreme situations such as TPL it may be too large. For example on the 'rock' board, using a simple loop saves a useful 48 bytes. With gcc 4.9 and the rodata bug, this patch is enough to reduce the TPL image below the limit. Signed-off-by: Simon Glass Reviewed-by: Heiko Stuebner --- lib/string.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'lib/string.c') diff --git a/lib/string.c b/lib/string.c index 67d5f6a..c1a28c1 100644 --- a/lib/string.c +++ b/lib/string.c @@ -437,8 +437,10 @@ char *strswab(const char *s) void * memset(void * s,int c,size_t count) { unsigned long *sl = (unsigned long *) s; - unsigned long cl = 0; char *s8; + +#if !CONFIG_IS_ENABLED(TINY_MEMSET) + unsigned long cl = 0; int i; /* do it one word at a time (32 bits or 64 bits) while possible */ @@ -452,7 +454,7 @@ void * memset(void * s,int c,size_t count) count -= sizeof(*sl); } } - /* fill 8 bits at a time */ +#endif /* fill 8 bits at a time */ s8 = (char *)sl; while (count--) *s8++ = c; -- cgit v1.1