1 ;------------------------------------------------------------------------------
3 ; Copyright (c) 2006, Intel Corporation
4 ; All rights reserved. This program and the accompanying materials
5 ; are licensed and made available under the terms and conditions of the BSD License
6 ; which accompanies this distribution. The full text of the license may be found at
7 ; http://opensource.org/licenses/bsd-license.php
9 ; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
10 ; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
18 ; Calculate the product of a 64-bit integer and another 64-bit integer
20 ;------------------------------------------------------------------------------
26 ;------------------------------------------------------------------------------
29 ; InternalMathMultU64x64 (
30 ; IN UINT64 Multiplicand,
31 ; IN UINT64 Multiplier
33 ;------------------------------------------------------------------------------
34 InternalMathMultU64x64 PROC USES ebx
35 mov ebx, [esp + 8] ; ebx <- M1[0..31]
36 mov edx, [esp + 16] ; edx <- M2[0..31]
39 imul ebx, [esp + 20] ; ebx <- M1[0..31] * M2[32..63]
40 imul edx, [esp + 12] ; edx <- M1[32..63] * M2[0..31]
41 add ebx, edx ; carries are abandoned
42 mul ecx ; edx:eax <- M1[0..31] * M2[0..31]
43 add edx, ebx ; carries are abandoned
45 InternalMathMultU64x64 ENDP