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fb79aa01 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 |
fb79aa01 JJ |
5 | ;\r |
6 | ; Module Name:\r | |
7 | ;\r | |
8 | ; DivError.asm\r | |
9 | ;\r | |
10 | ; Abstract:\r | |
11 | ;\r | |
12 | ; Set error flag for all division functions\r | |
13 | ;\r | |
14 | ;------------------------------------------------------------------------------\r | |
15 | \r | |
16 | SECTION .text\r | |
17 | \r | |
18 | ;------------------------------------------------------------------------------\r | |
19 | ; UINT64\r | |
20 | ; EFIAPI\r | |
21 | ; InternalMathDivRemU64x32 (\r | |
22 | ; IN UINT64 Dividend,\r | |
23 | ; IN UINT32 Divisor,\r | |
24 | ; OUT UINT32 *Remainder\r | |
25 | ; );\r | |
26 | ;------------------------------------------------------------------------------\r | |
27 | global ASM_PFX(InternalMathDivRemU64x32)\r | |
28 | ASM_PFX(InternalMathDivRemU64x32):\r | |
29 | mov ecx, [esp + 12] ; ecx <- divisor\r | |
30 | mov eax, [esp + 8] ; eax <- dividend[32..63]\r | |
31 | xor edx, edx\r | |
32 | div ecx ; eax <- quotient[32..63], edx <- remainder\r | |
33 | push eax\r | |
34 | mov eax, [esp + 8] ; eax <- dividend[0..31]\r | |
35 | div ecx ; eax <- quotient[0..31]\r | |
36 | mov ecx, [esp + 20] ; ecx <- Remainder\r | |
37 | jecxz .0 ; abandon remainder if Remainder == NULL\r | |
38 | mov [ecx], edx\r | |
39 | .0:\r | |
40 | pop edx ; edx <- quotient[32..63]\r | |
41 | ret\r | |
42 | \r |