Import some basic libraries instances for Mde Packages.

[mirror_edk2.git] / MdePkg / Library / BaseMemoryLibRepStr / Ia32 / ScanMem64.S

diff --git a/MdePkg/Library/BaseMemoryLibRepStr/Ia32/ScanMem64.S b/MdePkg/Library/BaseMemoryLibRepStr/Ia32/ScanMem64.S
new file mode 100644 (file)
index 0000000..37dc3bb
--- /dev/null
+++ b/MdePkg/Library/BaseMemoryLibRepStr/Ia32/ScanMem64.S
@@ -0,0 +1,64 @@
+//\r
+// Include common header file for this module.\r
+//\r
+#include "CommonHeader.h"\r
+\r
+#------------------------------------------------------------------------------\r
+#\r
+# Copyright (c) 2006, Intel Corporation\r
+# All rights reserved. This program and the accompanying materials\r
+# are licensed and made available under the terms and conditions of the BSD License\r
+# which accompanies this distribution.  The full text of the license may be found at\r
+# http://opensource.org/licenses/bsd-license.php\r
+#\r
+# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
+# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+#\r
+# Module Name:\r
+#\r
+#   ScanMem64.Asm\r
+#\r
+# Abstract:\r
+#\r
+#   ScanMem64 function\r
+#\r
+# Notes:\r
+#\r
+#   The following BaseMemoryLib instances share the same version of this file:\r
+#\r
+#       BaseMemoryLibRepStr\r
+#       BaseMemoryLibMmx\r
+#       BaseMemoryLibSse2\r
+#\r
+#------------------------------------------------------------------------------\r
+\r
+.globl _InternalMemScanMem64\r
+\r
+#------------------------------------------------------------------------------\r
+# CONST VOID *\r
+# EFIAPI\r
+# InternalMemScanMem64 (\r
+#   IN      CONST VOID                *Buffer,\r
+#   IN      UINTN                     Length,\r
+#   IN      UINT64                    Value\r
+#   );\r
+#------------------------------------------------------------------------------\r
+_InternalMemScanMem64:\r
+    push    %edi\r
+    movl    12(%esp), %ecx\r
+    movl    16(%esp), %eax\r
+    movl    20(%esp), %edx\r
+    movl    8(%esp), %edi\r
+L0:\r
+    cmpl    (%edi), %eax\r
+    leal    8(%edi), %edi\r
+    loopne  L0\r
+    jne     L1\r
+    cmpl    -4(%edi), %edx\r
+    jecxz   L1\r
+    jne     L0\r
+L1:\r
+    leal    -8(%edi), %eax\r
+    cmovne  %ecx, %eax\r
+    pop     %edi\r
+    ret\r