X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=blobdiff_plain;f=MdePkg%2FLibrary%2FBaseMemoryLibOptPei%2FX64%2FCopyMem.S;h=fad30a5f3187ca7f1a1dc7b7ca3c97bc82348d36;hp=2ab574621e4d568dd371b4b4a816553f0b10eb43;hb=2fc59a003ed9104f9feebe0e418f2a04a50f3284;hpb=132f41f0a92082775d931067089a63ca50367225

diff --git a/MdePkg/Library/BaseMemoryLibOptPei/X64/CopyMem.S b/MdePkg/Library/BaseMemoryLibOptPei/X64/CopyMem.S
index 2ab574621e..fad30a5f31 100644
--- a/MdePkg/Library/BaseMemoryLibOptPei/X64/CopyMem.S
+++ b/MdePkg/Library/BaseMemoryLibOptPei/X64/CopyMem.S
@@ -3,11 +3,11 @@
 #
 #------------------------------------------------------------------------------
 #
-# Copyright (c) 2006 - 2008, Intel Corporation
-# All rights reserved. This program and the accompanying materials
+# Copyright (c) 2006 - 2009, Intel Corporation. All rights reserved.<BR>
+# 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
-# http://opensource.org/licenses/bsd-license.php
+# http://opensource.org/licenses/bsd-license.php.
 #
 # THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
 # WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
@@ -34,34 +34,33 @@
 #    IN UINTN  Count
 #    )
 #------------------------------------------------------------------------------
-.intel_syntax noprefix
 ASM_GLOBAL ASM_PFX(InternalMemCopyMem)
 ASM_PFX(InternalMemCopyMem):
-    push    rsi
-    push    rdi
-    mov     rsi, rdx                    # rsi <- Source
-    mov     rdi, rcx                    # rdi <- Destination
-    lea     r9, [rsi + r8 - 1]          # r9 <- End of Source
-    cmp     rsi, rdi
-    mov     rax, rdi                    # rax <- Destination as return value
+    pushq   %rsi
+    pushq   %rdi
+    movq    %rdx, %rsi                  # rsi <- Source
+    movq    %rcx, %rdi                  # rdi <- Destination
+    leaq    -1(%rsi, %r8,), %r9         # r9 <- End of Source
+    cmpq    %rdi, %rsi
+    movq    %rdi, %rax                  # rax <- Destination as return value
     jae     _InternalMemCopyMem_al_0000
-    cmp     r9, rdi
+    cmpq    %rdi, %r9
     jae     _atSym_CopyBackward         # Copy backward if overlapped
 _InternalMemCopyMem_al_0000:
-    mov     rcx, r8
-    and     r8, 7
-    shr     rcx, 3
+    movq    %r8, %rcx
+    andq    $7, %r8
+    shrq    $3, %rcx
     rep     movsq                       # Copy as many Qwords as possible
     jmp     _atSym_CopyBytes
 _atSym_CopyBackward:
-    mov     rsi, r9                     # rsi <- End of Source
-    lea     rdi, [rdi + r8 - 1]         # esi <- End of Destination
+    movq    %r9, %rsi                   # rsi <- End of Source
+    leaq    -1(%rdi, %r8), %rdi         # rdi <- End of Destination
     std                                 # set direction flag
 _atSym_CopyBytes:
-    mov     rcx, r8
+    movq    %r8, %rcx
     rep     movsb                       # Copy bytes backward
     cld
-    pop     rdi
-    pop     rsi
+    popq    %rdi
+    popq    %rsi
     ret