47 lines
1.2 KiB
NASM
47 lines
1.2 KiB
NASM
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subttl emfinit.asm - Emulator initialization and FINIT instruction
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page
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;*******************************************************************************
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;emfinit.asm - Emulator initialization and FINIT instruction
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;
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; Microsoft Confidential
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;
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; Copyright (c) Microsoft Corporation 1991
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; All Rights Reserved
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;
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;Revision History:
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;
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; [] 09/05/91 TP Initial 32-bit version.
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;
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;*******************************************************************************
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EM_ENTRY eEmulatorInit
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EmulatorInit:
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EM_ENTRY eFINIT
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eFINIT:
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mov esi,BEGstk
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mov EMSEG:[CURstk],INITstk
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mov ecx,Numlev
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xor eax,eax
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EmInitLoop:
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mov EMSEG:[esi].ExpSgn,bTAG_EMPTY ;Exponent and sign are zero
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mov EMSEG:[esi].lManHi,eax
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mov EMSEG:[esi].lManLo,eax
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add esi, Reg87Len
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loop EmInitLoop
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mov EMSEG:[StatusWord],ax ; clear status word
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mov [esp+4].OldStatus,ax ; clear saved status word.
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mov EMSEG:[PrevCodeOff],eax
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mov EMSEG:[PrevDataOff],eax
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mov EMSEG:[LongControlWord],InitControlWord
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mov eax,offset Round64near
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mov EMSEG:[RoundMode],eax ;Address of round routine
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mov EMSEG:[TransRound],eax ;Address of round routine
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mov EMSEG:[SavedRoundMode],eax
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mov EMSEG:[ZeroVector],offset SaveResult
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mov EMSEG:[Einstall], 1
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ret
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