X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=blobdiff_plain;f=OldMdePkg%2FLibrary%2FBaseMemoryLibMmx%2FIa32%2FZeroMem.S;fp=OldMdePkg%2FLibrary%2FBaseMemoryLibMmx%2FIa32%2FZeroMem.S;h=8c52a3c950836118d221a6aac2f2f678388696af;hp=0000000000000000000000000000000000000000;hb=586cd1f1f4129ab7ec24543d4968801e17cc870b;hpb=144d783d40c8a02113350feabd1b9a55b692313f

diff --git a/OldMdePkg/Library/BaseMemoryLibMmx/Ia32/ZeroMem.S b/OldMdePkg/Library/BaseMemoryLibMmx/Ia32/ZeroMem.S
new file mode 100644
index 0000000000..8c52a3c950
--- /dev/null
+++ b/OldMdePkg/Library/BaseMemoryLibMmx/Ia32/ZeroMem.S
@@ -0,0 +1,54 @@
+#------------------------------------------------------------------------------
+#
+# Copyright (c) 2006, 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
+# 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.
+#
+# Module Name:
+#
+#   ZeroMem.asm
+#
+# Abstract:
+#
+#   ZeroMem function
+#
+# Notes:
+#
+#------------------------------------------------------------------------------
+
+.globl _InternalMemZeroMem
+
+#------------------------------------------------------------------------------
+#  VOID *
+#  EFIAPI
+#  InternalMemZeroMem (
+#    IN VOID   *Buffer,
+#    IN UINTN  Count
+#    );
+#------------------------------------------------------------------------------
+_InternalMemZeroMem:
+    push    %edi
+    movl    8(%esp), %edi
+    movl    12(%esp), %ecx
+    movl    %ecx, %edx
+    shrl    $3, %ecx
+    jz      L_ZeroBytes
+    pxor    %mm0, %mm0
+L0:
+    movq    %mm0, (%edi)
+    addl    $8, %edi
+    loop    L0
+L_ZeroBytes:
+    andl    $7, %edx
+    xorl    %eax, %eax
+    movl    %edx, %ecx
+    rep
+    stosb
+    movl    8(%esp), %eax
+    pop     %edi
+    ret