Import BaseMemoryLibMmx.

[mirror_edk2.git] / MdePkg / Library / BaseMemoryLibMmx / Ia32 / SetMem16.S

diff --git a/MdePkg/Library/BaseMemoryLibMmx/Ia32/SetMem16.S b/MdePkg/Library/BaseMemoryLibMmx/Ia32/SetMem16.S
new file mode 100644 (file)
index 0000000..e0a787a
--- /dev/null
+++ b/MdePkg/Library/BaseMemoryLibMmx/Ia32/SetMem16.S
@@ -0,0 +1,59 @@
+#------------------------------------------------------------------------------\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
+#   SetMem16.asm\r
+#\r
+# Abstract:\r
+#\r
+#   SetMem16 function\r
+#\r
+# Notes:\r
+#\r
+#------------------------------------------------------------------------------\r
+\r
+.globl _InternalMemSetMem16\r
+\r
+#------------------------------------------------------------------------------\r
+#  VOID *\r
+#  InternalMemSetMem16 (\r
+#    IN VOID   *Buffer,\r
+#    IN UINTN  Count,\r
+#    IN UINT16 Value\r
+#    )\r
+#------------------------------------------------------------------------------\r
+_InternalMemSetMem16:\r
+    push    %edi\r
+    movl    16(%esp), %eax\r
+    shrdl   $16, %eax, %edx\r
+    shldl   $16, %edx, %eax\r
+    movl    12(%esp), %edx\r
+    movl    8(%esp), %edi\r
+    movl    %edx, %ecx\r
+    andl    $3, %edx\r
+    shrl    $2, %ecx\r
+    jz      L1\r
+    movd    %eax, %mm0\r
+    movd    %eax, %mm1\r
+    psllq   $32, %mm0\r
+    por     %mm1, %mm0\r
+L0:\r
+    movq    %mm0, (%edi)\r
+    addl    $8, %edi\r
+    loopl   L0\r
+L1:\r
+    movl    %edx, %ecx\r
+    rep\r
+    stosw\r
+    movl    8(%esp), %eax\r
+    pop     %edi\r
+    ret\r