X-Git-Url: https://git.proxmox.com/?a=blobdiff_plain;ds=sidebyside;f=MdePkg%2FLibrary%2FBaseMemoryLibRepStr%2FX64%2FScanMem64.S;h=9bc02b06b2fae9cd0a870ffd68c3fa3647847349;hb=1fef058f4b8fefc455bb171e4908c3e835b1b492;hp=917c37c3c5b6064d63d84accbf7e0275ad98ae38;hpb=132f41f0a92082775d931067089a63ca50367225;p=mirror_edk2.git

diff --git a/MdePkg/Library/BaseMemoryLibRepStr/X64/ScanMem64.S b/MdePkg/Library/BaseMemoryLibRepStr/X64/ScanMem64.S
index 917c37c3c5..9bc02b06b2 100644
--- a/MdePkg/Library/BaseMemoryLibRepStr/X64/ScanMem64.S
+++ b/MdePkg/Library/BaseMemoryLibRepStr/X64/ScanMem64.S
@@ -3,7 +3,7 @@
 #
 #------------------------------------------------------------------------------
 #
-# Copyright (c) 2006 - 2008, Intel Corporation
+# Copyright (c) 2006 - 2009, Intel Corporation
 # All rights reserved. This program and the accompanying materials
 # are licensed and made available under the terms and conditions of the BSD License
 # which accompanies this distribution.  The full text of the license may be found at
@@ -42,16 +42,15 @@
 #   IN      UINT64                    Value
 #   );
 #------------------------------------------------------------------------------
-.intel_syntax noprefix
 ASM_GLOBAL ASM_PFX(InternalMemScanMem64)
 ASM_PFX(InternalMemScanMem64):
-    push    rdi
-    mov     rdi, rcx
-    mov     rax, r8
-    mov     rcx, rdx
+    pushq   %rdi
+    movq    %rcx, %rdi
+    movq    %rdx, %rcx
+    movq    %r8, %rax
     repne   scasq
-    lea     rax, [rdi - 8]
-    cmovnz  rax, rcx
-    pop     rdi
+    leaq    -8(%rdi), %rax
+    cmovnz  %rcx, %rax                    # set rax to 0 if not found
+    popq    %rdi
     ret