You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
47 lines
1.7 KiB
47 lines
1.7 KiB
;------------------------------------------------------------------------------
|
|
;
|
|
; Copyright (c) 2006, 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.
|
|
;
|
|
; Module Name:
|
|
;
|
|
; MultU64x64.nasm
|
|
;
|
|
; Abstract:
|
|
;
|
|
; Calculate the product of a 64-bit integer and another 64-bit integer
|
|
;
|
|
;------------------------------------------------------------------------------
|
|
|
|
SECTION .text
|
|
|
|
;------------------------------------------------------------------------------
|
|
; UINT64
|
|
; EFIAPI
|
|
; InternalMathMultU64x64 (
|
|
; IN UINT64 Multiplicand,
|
|
; IN UINT64 Multiplier
|
|
; );
|
|
;------------------------------------------------------------------------------
|
|
global ASM_PFX(InternalMathMultU64x64)
|
|
ASM_PFX(InternalMathMultU64x64):
|
|
push ebx
|
|
mov ebx, [esp + 8] ; ebx <- M1[0..31]
|
|
mov edx, [esp + 16] ; edx <- M2[0..31]
|
|
mov ecx, ebx
|
|
mov eax, edx
|
|
imul ebx, [esp + 20] ; ebx <- M1[0..31] * M2[32..63]
|
|
imul edx, [esp + 12] ; edx <- M1[32..63] * M2[0..31]
|
|
add ebx, edx ; carries are abandoned
|
|
mul ecx ; edx:eax <- M1[0..31] * M2[0..31]
|
|
add edx, ebx ; carries are abandoned
|
|
pop ebx
|
|
ret
|
|
|