1 files changed, 46 insertions, 0 deletions
diff --git a/Core/MdePkg/Library/BaseLib/Ia32/DivU64x32Remainder.S b/Core/MdePkg/Library/BaseLib/Ia32/DivU64x32Remainder.S
new file mode 100644
index 0000000000..d9eb8e9e11
--- /dev/null
+++ b/Core/MdePkg/Library/BaseLib/Ia32/DivU64x32Remainder.S
@@ -0,0 +1,46 @@
+#------------------------------------------------------------------------------
+#
+# 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:
+#
+#   DivError.S
+#
+# Abstract:
+#
+#   Set error flag for all division functions
+#
+#------------------------------------------------------------------------------
+
+ASM_GLOBAL ASM_PFX(InternalMathDivRemU64x32)
+
+#------------------------------------------------------------------------------
+# UINT64
+# EFIAPI
+# InternalMathDivRemU64x32 (
+#   IN      UINT64                    Dividend,
+#   IN      UINT32                    Divisor,
+#   OUT     UINT32                    *Remainder
+#   );
+#------------------------------------------------------------------------------
+ASM_PFX(InternalMathDivRemU64x32):
+    movl    12(%esp), %ecx          # ecx <- divisor
+    movl    8(%esp), %eax           # eax <- dividend[32..63]
+    xorl    %edx, %edx
+    divl    %ecx                    # eax <- quotient[32..63], edx <- remainder
+    push    %eax
+    movl    8(%esp), %eax           # eax <- dividend[0..31]
+    divl    %ecx                    # eax <- quotient[0..31]
+    movl    20(%esp), %ecx          # ecx <- Remainder
+    jecxz   L1                      # abandon remainder if Remainder == NULL
+    movl    %edx, (%ecx)
+L1:
+    pop     %edx                    # edx <- quotient[32..63]
+    ret