From: mdkinney <mdkinney@6f19259b-4bc3-4df7-8a09-765794883524>
Date: Sat, 22 Sep 2007 16:55:58 +0000 (+0000)
Subject: Fix bug in backward copy for x64
X-Git-Tag: edk2-stable201903~22112
X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=a0b4ea2aeca3f0686c0f7662356608ef189c39a7;p=mirror_edk2.git

Fix bug in backward copy for x64



git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@3913 6f19259b-4bc3-4df7-8a09-765794883524
---

diff --git a/MdePkg/Library/BaseMemoryLibRepStr/x64/CopyMem.asm b/MdePkg/Library/BaseMemoryLibRepStr/x64/CopyMem.asm
index a2e04056fd..c2b5d6f92f 100644
--- a/MdePkg/Library/BaseMemoryLibRepStr/x64/CopyMem.asm
+++ b/MdePkg/Library/BaseMemoryLibRepStr/x64/CopyMem.asm
@@ -39,7 +39,7 @@ InternalMemCopyMem  PROC    USES    rsi rdi
     cmp     rsi, rdi
     mov     rax, rdi                    ; rax <- Destination as return value
     jae     @F
-    cmp     r9, rsi
+    cmp     r9, rdi
     jae     @CopyBackward               ; Copy backward if overlapped
 @@:
     mov     rcx, r8