| #------------------------------------------------------------------------------ | |
| # | |
| # 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. | |
| # | |
| # Module Name: | |
| # | |
| # MultU64x64.S | |
| # | |
| # Abstract: | |
| # | |
| # Calculate the product of a 64-bit integer and another 64-bit integer | |
| # | |
| #------------------------------------------------------------------------------ | |
| ASM_GLOBAL ASM_PFX(InternalMathMultU64x64) | |
| #------------------------------------------------------------------------------ | |
| # UINT64 | |
| # EFIAPI | |
| # InternalMathMultU64x64 ( | |
| # IN UINT64 Multiplicand, | |
| # IN UINT64 Multiplier | |
| # ); | |
| #------------------------------------------------------------------------------ | |
| ASM_PFX(InternalMathMultU64x64): | |
| push %ebx | |
| movl 8(%esp), %ebx # ebx <- M1[0..31] | |
| movl 16(%esp), %edx # edx <- M2[0..31] | |
| movl %ebx, %ecx | |
| movl %edx, %eax | |
| imull 20(%esp), %ebx # ebx <- M1[0..31] * M2[32..63] | |
| imull 12(%esp), %edx # edx <- M1[32..63] * M2[0..31] | |
| addl %edx, %ebx # carries are abandoned | |
| mull %ecx # edx:eax <- M1[0..31] * M2[0..31] | |
| addl %ebx, %edx # carries are abandoned | |
| pop %ebx | |
| ret |