vendor/edk2/7babb4372e6a34cbbc54249b25056272a5a9924c

1 files changed, 48 insertions, 0 deletions

diff --git a/MdePkg/Library/BaseLib/Ia32/ModU64x32.c b/MdePkg/Library/BaseLib/Ia32/ModU64x32.c
new file mode 100644
index 0000000000000..3186ccb2a2651
--- /dev/null
+++ b/MdePkg/Library/BaseLib/Ia32/ModU64x32.c
@@ -0,0 +1,48 @@
+/** @file
+  Calculate the remainder of a 64-bit integer by a 32-bit integer
+
+  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 32-bit unsigned remainder.
+
+  This function divides the 64-bit unsigned value Dividend by the 32-bit
+  unsigned value Divisor and generates a 32-bit remainder. This function
+  returns the 32-bit unsigned remainder.
+
+  @param  Dividend  A 64-bit unsigned value.
+  @param  Divisor   A 32-bit unsigned value.
+
+  @return Dividend % Divisor
+
+**/
+UINT32
+EFIAPI
+InternalMathModU64x32 (
+  IN      UINT64                    Dividend,
+  IN      UINT32                    Divisor
+  )
+{
+  _asm {
+    mov     eax, dword ptr [Dividend + 4]
+    mov     ecx, Divisor
+    xor     edx, edx
+    div     ecx
+    mov     eax, dword ptr [Dividend + 0]
+    div     ecx
+    mov     eax, edx
+  }
+}