From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-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! --- arch/i386/lib/memcpy.c | 44 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 44 insertions(+) create mode 100644 arch/i386/lib/memcpy.c (limited to 'arch/i386/lib/memcpy.c') 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 @@ +#include +#include +#include + +#undef memcpy +#undef memset + +void *memcpy(void *to, const void *from, size_t n) +{ +#ifdef CONFIG_X86_USE_3DNOW + return __memcpy3d(to, from, n); +#else + return __memcpy(to, from, n); +#endif +} +EXPORT_SYMBOL(memcpy); + +void *memset(void *s, int c, size_t count) +{ + return __memset(s, c, count); +} +EXPORT_SYMBOL(memset); + +void *memmove(void *dest, const void *src, size_t n) +{ + int d0, d1, d2; + + if (dest < src) { + memcpy(dest,src,n); + } else { + __asm__ __volatile__( + "std\n\t" + "rep\n\t" + "movsb\n\t" + "cld" + : "=&c" (d0), "=&S" (d1), "=&D" (d2) + :"0" (n), + "1" (n-1+(const char *)src), + "2" (n-1+(char *)dest) + :"memory"); + } + return dest; +} +EXPORT_SYMBOL(memmove); -- cgit v1.2.2