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authorStefan Reinauer <stefan.reinauer@coreboot.org>2015-07-13 09:39:15 +0200
committerStefan Reinauer <stefan.reinauer@coreboot.org>2015-07-13 21:04:56 +0200
commit6cb3a59fd5e754c3627b79db21c5bcc284bfd721 (patch)
treee83db5b11ee4a29d496dcf2798d024b6b8455ab7 /src/arch/x86/memcpy.c
parent9693885ad88d21ead7bd9ebc32f3e4901841b18b (diff)
downloadcoreboot-6cb3a59fd5e754c3627b79db21c5bcc284bfd721.tar.xz
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 <stefan.reinauer@coreboot.org> Reviewed-on: http://review.coreboot.org/10901 Tested-by: build bot (Jenkins) Tested-by: Raptor Engineering Automated Test Stand <noreply@raptorengineeringinc.com> Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Diffstat (limited to 'src/arch/x86/memcpy.c')
-rw-r--r--src/arch/x86/memcpy.c22
1 files changed, 22 insertions, 0 deletions
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 <string.h>
+
+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;
+}