106 lines
2.6 KiB
NASM
106 lines
2.6 KiB
NASM
;------------------------------------------------------------------------
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; Copyright 2004-2020 Sandboxie Holdings, LLC
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;
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; This program is free software: you can redistribute it and/or modify
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; it under the terms of the GNU General Public License as published by
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; the Free Software Foundation, either version 3 of the License, or
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; (at your option) any later version.
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;
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; This program is distributed in the hope that it will be useful,
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; but WITHOUT ANY WARRANTY; without even the implied warranty of
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; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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; GNU General Public License for more details.
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;
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; You should have received a copy of the GNU General Public License
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; along with this program. If not, see <https://www.gnu.org/licenses/>.
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;------------------------------------------------------------------------
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;----------------------------------------------------------------------------
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; _aulldvrm support routine is not available on Windows 2000
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;
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; this is an exact copy of _aulldvrm procedure from ulldvrm.obj object file
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; in the c:\work\tools\winddk\lib\crt\i386\libcmt.lib library
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;
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; it also the same as the copy of _aulldvrm in the Windows kernel
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;----------------------------------------------------------------------------
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ifdef _WIN64
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;
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else
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.386p
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.model flat
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.code
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__aulldvrm proc
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push esi
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mov eax,dword ptr [esp+14h]
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or eax,eax
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jne label01
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mov ecx,dword ptr [esp+10h]
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mov eax,dword ptr [esp+0Ch]
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xor edx,edx
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div ecx
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mov ebx,eax
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mov eax,dword ptr [esp+8]
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div ecx
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mov esi,eax
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mov eax,ebx
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mul dword ptr [esp+10h]
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mov ecx,eax
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mov eax,esi
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mul dword ptr [esp+10h]
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add edx,ecx
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jmp label05
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label01: mov ecx,eax
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mov ebx,dword ptr [esp+10h]
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mov edx,dword ptr [esp+0Ch]
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mov eax,dword ptr [esp+8]
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label02: shr ecx,1
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rcr ebx,1
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shr edx,1
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rcr eax,1
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or ecx,ecx
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jne label02
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div ebx
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mov esi,eax
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mul dword ptr [esp+14h]
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mov ecx,eax
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mov eax,dword ptr [esp+10h]
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mul esi
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add edx,ecx
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jb label03
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cmp edx,dword ptr [esp+0Ch]
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ja label03
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jb label04
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cmp eax,dword ptr [esp+8]
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jbe label04
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label03: dec esi
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sub eax,dword ptr [esp+10h]
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sbb edx,dword ptr [esp+14h]
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label04: xor ebx,ebx
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label05: sub eax,dword ptr [esp+8]
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sbb edx,dword ptr [esp+0Ch]
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neg edx
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neg eax
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sbb edx,0
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mov ecx,edx
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mov edx,ebx
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mov ebx,ecx
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mov ecx,eax
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mov eax,esi
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pop esi
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ret 10h
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__aulldvrm endp
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public __aulldvrm
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endif
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end
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