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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/i386/lib/memcpy.c
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'arch/i386/lib/memcpy.c')
-rw-r--r--arch/i386/lib/memcpy.c44
1 files changed, 44 insertions, 0 deletions
diff --git a/arch/i386/lib/memcpy.c b/arch/i386/lib/memcpy.c
new file mode 100644
index 000000000000..891b2359d18a
--- /dev/null
+++ b/arch/i386/lib/memcpy.c
@@ -0,0 +1,44 @@
1#include <linux/config.h>
2#include <linux/string.h>
3#include <linux/module.h>
4
5#undef memcpy
6#undef memset
7
8void *memcpy(void *to, const void *from, size_t n)
9{
10#ifdef CONFIG_X86_USE_3DNOW
11 return __memcpy3d(to, from, n);
12#else
13 return __memcpy(to, from, n);
14#endif
15}
16EXPORT_SYMBOL(memcpy);
17
18void *memset(void *s, int c, size_t count)
19{
20 return __memset(s, c, count);
21}
22EXPORT_SYMBOL(memset);
23
24void *memmove(void *dest, const void *src, size_t n)
25{
26 int d0, d1, d2;
27
28 if (dest < src) {
29 memcpy(dest,src,n);
30 } else {
31 __asm__ __volatile__(
32 "std\n\t"
33 "rep\n\t"
34 "movsb\n\t"
35 "cld"
36 : "=&c" (d0), "=&S" (d1), "=&D" (d2)
37 :"0" (n),
38 "1" (n-1+(const char *)src),
39 "2" (n-1+(char *)dest)
40 :"memory");
41 }
42 return dest;
43}
44EXPORT_SYMBOL(memmove);