From: John Hodge <tpg@mutabah.net>
Date: Fri, 11 Nov 2011 04:59:49 +0000 (+0800)
Subject: Kernel/x86 - Distinguished tracing of unaligned memcpys from aligned
X-Git-Tag: rel0.14~124
X-Git-Url: https://git.ucc.asn.au/?a=commitdiff_plain;h=51d1da69cd1c30ff20a2ff1d958fe0cd149c9cbf;p=tpg%2Facess2.git

Kernel/x86 - Distinguished tracing of unaligned memcpys from aligned
---

diff --git a/Kernel/arch/x86/lib.c b/Kernel/arch/x86/lib.c
index 9dc631d0..0b802d1e 100644
--- a/Kernel/arch/x86/lib.c
+++ b/Kernel/arch/x86/lib.c
@@ -324,10 +324,12 @@ int memcmp(const void *m1, const void *m2, size_t Num)
  */
 void *memcpy(void *Dest, const void *Src, size_t Num)
 {
-//	Debug("\nmemcpy:Num=0x%x by %p", Num, __builtin_return_address(0));
-	if( ((Uint)Dest & 3) || ((Uint)Src & 3) )
+	if( ((Uint)Dest & 3) || ((Uint)Src & 3) ) {
 		__asm__ __volatile__ ("rep movsb" :: "D" (Dest), "S" (Src), "c" (Num));
+//		Debug("\nmemcpy:Num=0x%x by %p (UA)", Num, __builtin_return_address(0));
+	}
 	else {
+//		Debug("\nmemcpy:Num=0x%x by %p", Num, __builtin_return_address(0));
 		__asm__ __volatile__ (
 			"rep movsl;\n\t"
 			"mov %3, %%ecx;\n\t"