1 files changed, 44 insertions, 0 deletions
diff --git a/roms/edk2/MdePkg/Library/BaseLib/Ia32/DivU64x32.c b/roms/edk2/MdePkg/Library/BaseLib/Ia32/DivU64x32.c
new file mode 100644
index 000000000..538f77a83
--- /dev/null
+++ b/roms/edk2/MdePkg/Library/BaseLib/Ia32/DivU64x32.c
@@ -0,0 +1,44 @@
+/** @file
+  Calculate the quotient of a 64-bit integer by a 32-bit integer
+
+  Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+
+
+
+/**
+  Divides a 64-bit unsigned integer by a 32-bit unsigned integer and
+  generates a 64-bit unsigned result.
+
+  This function divides the 64-bit unsigned value Dividend by the 32-bit
+  unsigned value Divisor and generates a 64-bit unsigned quotient. This
+  function returns the 64-bit unsigned quotient.
+
+  @param  Dividend  A 64-bit unsigned value.
+  @param  Divisor   A 32-bit unsigned value.
+
+  @return Dividend / Divisor
+
+**/
+UINT64
+EFIAPI
+InternalMathDivU64x32 (
+  IN      UINT64                    Dividend,
+  IN      UINT32                    Divisor
+  )
+{
+  _asm {
+    mov     eax, dword ptr [Dividend + 4]
+    mov     ecx, Divisor
+    xor     edx, edx
+    div     ecx
+    push    eax                     ; save quotient on stack
+    mov     eax, dword ptr [Dividend]
+    div     ecx
+    pop     edx                     ; restore high-order dword of the quotient
+  }
+}
+