1 files changed, 34 insertions, 0 deletions
diff --git a/roms/edk2/MdePkg/Library/BaseLib/Ia32/MultU64x32.nasm b/roms/edk2/MdePkg/Library/BaseLib/Ia32/MultU64x32.nasm
new file mode 100644
index 000000000..f7591b120
--- /dev/null
+++ b/roms/edk2/MdePkg/Library/BaseLib/Ia32/MultU64x32.nasm
@@ -0,0 +1,34 @@
+;------------------------------------------------------------------------------
+;
+; Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>
+; SPDX-License-Identifier: BSD-2-Clause-Patent
+;
+; Module Name:
+;
+;   MultU64x32.nasm
+;
+; Abstract:
+;
+;   Calculate the product of a 64-bit integer and a 32-bit integer
+;
+;------------------------------------------------------------------------------
+
+    SECTION .text
+
+;------------------------------------------------------------------------------
+; UINT64
+; EFIAPI
+; InternalMathMultU64x32 (
+;   IN      UINT64                    Multiplicand,
+;   IN      UINT32                    Multiplier
+;   );
+;------------------------------------------------------------------------------
+global ASM_PFX(InternalMathMultU64x32)
+ASM_PFX(InternalMathMultU64x32):
+    mov     ecx, [esp + 12]
+    mov     eax, ecx
+    imul    ecx, [esp + 8]              ; overflow not detectable
+    mul     dword [esp + 4]
+    add     edx, ecx
+    ret
+