[git commit ldso-future 1/1] dl-string.h: add optimized memset for i386
Peter S. Mazinger
ps.m at gmx.net
Wed Mar 30 11:53:36 UTC 2011
commit: http://git.uclibc.org/uClibc/commit/?id=fc49ec5553d6bed9257cf5f8edff26f4f247c9a8
branch: http://git.uclibc.org/uClibc/commit/?id=refs/heads/ldso-future
Signed-off-by: Peter S. Mazinger <ps.m at gmx.net>
---
ldso/include/dl-string.h | 13 +++++++++++++
1 files changed, 13 insertions(+), 0 deletions(-)
diff --git a/ldso/include/dl-string.h b/ldso/include/dl-string.h
index bfb79de..bf77f84 100644
--- a/ldso/include/dl-string.h
+++ b/ldso/include/dl-string.h
@@ -169,6 +169,19 @@ lessthan4:
} while (--n);
return to;
}
+#elif defined(__i386__)
+/* smaller, copied from an earlier libc/string/i386/memset.c */
+static __always_inline void *_dl_memset(void *s, int c, size_t count)
+{
+ int d0, d1;
+ __asm__ __volatile__(
+ "rep\n\t"
+ "stosb"
+ : "=&c" (d0), "=&D" (d1)
+ :"a" (c),"1" (s),"0" (count)
+ :"memory");
+ return s;
+}
#else
static __always_inline void * _dl_memset(void *str, int c, size_t len)
{
--
1.7.3.4
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