From 6cb3a59fd5e754c3627b79db21c5bcc284bfd721 Mon Sep 17 00:00:00 2001 From: Stefan Reinauer Date: Mon, 13 Jul 2015 09:39:15 +0200 Subject: x86: flatten hierarchy It never made sense to have bootblock_* in init, but pirq_routing.c in boot, and some ld scripts on the main level while others live in subdirectories. This patch flattens the directory hierarchy and makes x86 more similar to the other architectures. Change-Id: I4056038fe7813e4d3d3042c441e7ab6076a36384 Signed-off-by: Stefan Reinauer Reviewed-on: http://review.coreboot.org/10901 Tested-by: build bot (Jenkins) Tested-by: Raptor Engineering Automated Test Stand Reviewed-by: Ronald G. Minnich --- src/arch/x86/memcpy.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) create mode 100644 src/arch/x86/memcpy.c (limited to 'src/arch/x86/memcpy.c') diff --git a/src/arch/x86/memcpy.c b/src/arch/x86/memcpy.c new file mode 100644 index 0000000000..4915a9eb51 --- /dev/null +++ b/src/arch/x86/memcpy.c @@ -0,0 +1,22 @@ +#include + +void *memcpy(void *dest, const void *src, size_t n) +{ + unsigned long d0, d1, d2; + + asm volatile( +#ifdef __x86_64__ + "rep ; movsd\n\t" + "mov %4,%%rcx\n\t" +#else + "rep ; movsl\n\t" + "movl %4,%%ecx\n\t" +#endif + "rep ; movsb\n\t" + : "=&c" (d0), "=&D" (d1), "=&S" (d2) + : "0" (n >> 2), "g" (n & 3), "1" (dest), "2" (src) + : "memory" + ); + + return dest; +} -- cgit v1.2.3