1 files changed, 41 insertions, 0 deletions
diff --git a/Core/MdePkg/Library/BaseLib/Ia32/MultU64x32.S b/Core/MdePkg/Library/BaseLib/Ia32/MultU64x32.S
new file mode 100644
index 0000000000..8e3f6f5560
--- /dev/null
+++ b/Core/MdePkg/Library/BaseLib/Ia32/MultU64x32.S
@@ -0,0 +1,41 @@
+#------------------------------------------------------------------------------
+#
+# Copyright (c) 2006 - 2008, 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.
+#
+# 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:
+#
+#   MultU64x32.S
+#
+# Abstract:
+#
+#   Calculate the product of a 64-bit integer and a 32-bit integer
+#
+#------------------------------------------------------------------------------
+
+
+    .code:
+
+ASM_GLOBAL ASM_PFX(InternalMathMultU64x32)
+
+#------------------------------------------------------------------------------
+# UINT64
+# EFIAPI
+# InternalMathMultU64x32 (
+#   IN      UINT64                    Multiplicand,
+#   IN      UINT32                    Multiplier
+#   );
+#------------------------------------------------------------------------------
+ASM_PFX(InternalMathMultU64x32):
+    movl    12(%esp), %ecx
+    movl    %ecx, %eax
+    imull   8(%esp), %ecx               # overflow not detectable
+    mull    0x4(%esp)
+    addl    %ecx, %edx
+    ret