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| author | H. Peter Anvin <hpa@zytor.com> | 2008-07-07 16:05:17 -0700 |
|---|---|---|
| committer | H. Peter Anvin <hpa@zytor.com> | 2008-07-07 16:05:17 -0700 |
| commit | 95543286c5d1587aac92c1cb7d3a51f9dd1c1696 (patch) | |
| tree | bdabd6f09661fae47a03263514624c0a3154d336 | |
| parent | 18e266792a8bbd155f53c91703d18248adf83690 (diff) | |
| download | klibc-95543286c5d1587aac92c1cb7d3a51f9dd1c1696.tar.gz | |
[klibc] memmove: when we do std, we need to also cldklibc-1.5.12
After doing std, we absolutely need to cld afterwards (the compiler
has the right to assume DF=0, and we do elsewhere.)
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
| -rw-r--r-- | usr/klibc/memmove.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/usr/klibc/memmove.c b/usr/klibc/memmove.c index 659c77850605b..a398cd8dc986b 100644 --- a/usr/klibc/memmove.c +++ b/usr/klibc/memmove.c @@ -10,12 +10,12 @@ void *memmove(void *dst, const void *src, size_t n) char *q = dst; #if defined(__i386__) || defined(__x86_64__) if (q < p) { - asm volatile("cld ; rep ; movsb" + asm volatile("cld; rep; movsb" : "+c" (n), "+S"(p), "+D"(q)); } else { p += (n - 1); q += (n - 1); - asm volatile("std ; rep ; movsb" + asm volatile("std; rep; movsb; cld" : "+c" (n), "+S"(p), "+D"(q)); } #else |