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878ddf1f | 1 | ;------------------------------------------------------------------------------\r |
2 | ;\r | |
3 | ; Copyright (c) 2006, Intel Corporation\r | |
4 | ; All rights reserved. This program and the accompanying materials\r | |
5 | ; are licensed and made available under the terms and conditions of the BSD License\r | |
6 | ; which accompanies this distribution. The full text of the license may be found at\r | |
7 | ; http://opensource.org/licenses/bsd-license.php\r | |
8 | ;\r | |
9 | ; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
10 | ; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
11 | ;\r | |
12 | ; Module Name:\r | |
13 | ;\r | |
14 | ; DivU64x64Remainder.asm\r | |
15 | ;\r | |
16 | ; Abstract:\r | |
17 | ;\r | |
18 | ; Calculate the quotient of a 64-bit integer by a 64-bit integer and returns\r | |
19 | ; both the quotient and the remainder\r | |
20 | ;\r | |
21 | ;------------------------------------------------------------------------------\r | |
22 | \r | |
23 | .386\r | |
24 | .model flat,C\r | |
25 | .code\r | |
26 | \r | |
27 | EXTERN InternalMathDivRemU64x32:PROC\r | |
28 | \r | |
29 | InternalMathDivRemU64x64 PROC\r | |
30 | mov ecx, [esp + 16]\r | |
31 | test ecx, ecx\r | |
32 | jnz _@DivRemU64x64\r | |
33 | mov ecx, [esp + 20]\r | |
34 | jecxz @F\r | |
35 | and dword ptr [ecx + 4], 0\r | |
36 | mov [esp + 16], ecx\r | |
37 | @@:\r | |
38 | jmp InternalMathDivRemU64x32\r | |
39 | InternalMathDivRemU64x64 ENDP\r | |
40 | \r | |
41 | _@DivRemU64x64 PROC USES ebx esi edi\r | |
42 | mov edx, dword ptr [esp + 20]\r | |
43 | mov eax, dword ptr [esp + 16]\r | |
44 | mov edi, edx\r | |
45 | mov esi, eax\r | |
46 | mov ebx, dword ptr [esp + 24]\r | |
47 | @@:\r | |
48 | shr edx, 1\r | |
49 | rcr eax, 1\r | |
50 | shrd ebx, ecx, 1\r | |
51 | shr ecx, 1\r | |
52 | jnz @B\r | |
53 | div ebx\r | |
54 | mov ebx, eax\r | |
55 | mov ecx, [esp + 28]\r | |
56 | mul dword ptr [esp + 24]\r | |
57 | imul ecx, ebx\r | |
58 | add edx, ecx\r | |
59 | mov ecx, dword ptr [esp + 32]\r | |
60 | jc @TooLarge\r | |
61 | cmp edi, edx\r | |
62 | ja @Correct\r | |
63 | jb @TooLarge\r | |
64 | cmp esi, eax\r | |
65 | jae @Correct\r | |
66 | @TooLarge:\r | |
67 | dec ebx\r | |
68 | jecxz @Return\r | |
69 | sub eax, dword ptr [esp + 24]\r | |
70 | sbb edx, dword ptr [esp + 28]\r | |
71 | @Correct:\r | |
72 | jecxz @Return\r | |
73 | sub esi, eax\r | |
74 | sbb edi, edx\r | |
75 | mov [ecx], esi\r | |
76 | mov [ecx + 4], edi\r | |
77 | @Return:\r | |
78 | mov eax, ebx\r | |
79 | xor edx, edx\r | |
80 | ret\r | |
81 | _@DivRemU64x64 ENDP\r | |
82 | \r | |
83 | END\r |