1 files changed, 55 insertions, 0 deletions
diff --git a/Core/MdePkg/Library/BaseLib/Ia32/DivU64x32Remainder.c b/Core/MdePkg/Library/BaseLib/Ia32/DivU64x32Remainder.c
new file mode 100644
index 0000000000..87eef8bb26
--- /dev/null
+++ b/Core/MdePkg/Library/BaseLib/Ia32/DivU64x32Remainder.c
@@ -0,0 +1,55 @@
+/** @file
+  Set error flag for all division functions
+
+  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.
+
+**/
+
+/**
+  Divides a 64-bit unsigned integer by a 32-bit unsigned integer and
+  generates a 64-bit unsigned result and an optional 32-bit unsigned remainder.
+
+  This function divides the 64-bit unsigned value Dividend by the 32-bit
+  unsigned value Divisor and generates a 64-bit unsigned quotient. If Remainder
+  is not NULL, then the 32-bit unsigned remainder is returned in Remainder.
+  This function returns the 64-bit unsigned quotient.
+
+  @param  Dividend  A 64-bit unsigned value.
+  @param  Divisor   A 32-bit unsigned value.
+  @param  Remainder A pointer to a 32-bit unsigned value. This parameter is
+                    optional and may be NULL.
+
+  @return Dividend / Divisor
+
+**/
+UINT64
+EFIAPI
+InternalMathDivRemU64x32 (
+  IN      UINT64                    Dividend,
+  IN      UINT32                    Divisor,
+  OUT     UINT32                    *Remainder
+  )
+{
+  _asm {
+    mov     ecx, Divisor
+    mov     eax, dword ptr [Dividend + 4]
+    xor     edx, edx
+    div     ecx
+    push    eax
+    mov     eax, dword ptr [Dividend + 0]
+    div     ecx
+    mov     ecx, Remainder
+    jecxz   RemainderNull                      // abandon remainder if Remainder == NULL
+    mov     [ecx], edx
+RemainderNull:
+    pop     edx
+  }
+}
+