1 #------------------------------------------------------------------------------
3 # Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
4 # 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 #------------------------------------------------------------------------------
22 ASM_GLOBAL ASM_PFX(InternalMathMultU64x64)
24 #------------------------------------------------------------------------------
27 # InternalMathMultU64x64 (
28 # IN UINT64 Multiplicand,
29 # IN UINT64 Multiplier
31 #------------------------------------------------------------------------------
32 ASM_PFX(InternalMathMultU64x64):
34 movl 8(%esp), %ebx # ebx <- M1[0..31]
35 movl 16(%esp), %edx # edx <- M2[0..31]
38 imull 20(%esp), %ebx # ebx <- M1[0..31] * M2[32..63]
39 imull 12(%esp), %edx # edx <- M1[32..63] * M2[0..31]
40 addl %edx, %ebx # carries are abandoned
41 mull %ecx # edx:eax <- M1[0..31] * M2[0..31]
42 addl %ebx, %edx # carries are abandoned