projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| f8b4c87c JJ |
1 | ;------------------------------------------------------------------------------\r |
| 2 | ;\r | |
| 3 | ; Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>\r | |
| 9344f092 | 4 | ; SPDX-License-Identifier: BSD-2-Clause-Patent\r |
| f8b4c87c JJ |
5 | ;\r |
| 6 | ; Module Name:\r | |
| 7 | ;\r | |
| 8 | ; MultU64x32.nasm\r | |
| 9 | ;\r | |
| 10 | ; Abstract:\r | |
| 11 | ;\r | |
| 12 | ; Calculate the product of a 64-bit integer and a 32-bit integer\r | |
| 13 | ;\r | |
| 14 | ;------------------------------------------------------------------------------\r | |
| 15 | \r | |
| 16 | SECTION .text\r | |
| 17 | \r | |
| 18 | ;------------------------------------------------------------------------------\r | |
| 19 | ; UINT64\r | |
| 20 | ; EFIAPI\r | |
| 21 | ; InternalMathMultU64x32 (\r | |
| 22 | ; IN UINT64 Multiplicand,\r | |
| 23 | ; IN UINT32 Multiplier\r | |
| 24 | ; );\r | |
| 25 | ;------------------------------------------------------------------------------\r | |
| 26 | global ASM_PFX(InternalMathMultU64x32)\r | |
| 27 | ASM_PFX(InternalMathMultU64x32):\r | |
| 28 | mov ecx, [esp + 12]\r | |
| 29 | mov eax, ecx\r | |
| 30 | imul ecx, [esp + 8] ; overflow not detectable\r | |
| 31 | mul dword [esp + 4]\r | |
| 32 | add edx, ecx\r | |
| 33 | ret\r | |
| 34 | \r |