mirror of
https://github.com/reactos/reactos.git
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7105c52d86
Implement SETO, SETNO, SETC, SETNC, SETZ, SETNZ, SETBE, SETNBE, SETS, SETNS, SETP SETNP, SETL, SETNL, SETLE and SETNLE. svn path=/branches/ntvdm/; revision=60706
535 lines
13 KiB
C
535 lines
13 KiB
C
/*
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* Fast486 386/486 CPU Emulation Library
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* extraops.c
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*
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* Copyright (C) 2013 Aleksandar Andrejevic <theflash AT sdf DOT lonestar DOT org>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (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, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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/* INCLUDES *******************************************************************/
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// #define WIN32_NO_STATUS
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// #define _INC_WINDOWS
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#include <windef.h>
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// #define NDEBUG
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#include <debug.h>
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#include <fast486.h>
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#include "opcodes.h"
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#include "common.h"
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#include "extraops.h"
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/* PUBLIC VARIABLES ***********************************************************/
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FAST486_OPCODE_HANDLER_PROC
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Fast486ExtendedHandlers[FAST486_NUM_OPCODE_HANDLERS] =
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{
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NULL, // TODO: OPCODE 0x00 NOT IMPLEMENTED
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NULL, // TODO: OPCODE 0x01 NOT IMPLEMENTED
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NULL, // TODO: OPCODE 0x02 NOT IMPLEMENTED
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NULL, // TODO: OPCODE 0x03 NOT IMPLEMENTED
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NULL, // TODO: OPCODE 0x04 NOT IMPLEMENTED
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NULL, // TODO: OPCODE 0x05 NOT IMPLEMENTED
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NULL, // TODO: OPCODE 0x06 NOT IMPLEMENTED
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NULL, // TODO: OPCODE 0x07 NOT IMPLEMENTED
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NULL, // TODO: OPCODE 0x08 NOT IMPLEMENTED
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NULL, // TODO: OPCODE 0x09 NOT IMPLEMENTED
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NULL, // Invalid
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NULL, // Reserved (UD1)
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // TODO: OPCODE 0x10 NOT IMPLEMENTED
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NULL, // TODO: OPCODE 0x11 NOT IMPLEMENTED
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NULL, // TODO: OPCODE 0x12 NOT IMPLEMENTED
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NULL, // TODO: OPCODE 0x13 NOT IMPLEMENTED
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // TODO: OPCODE 0x20 NOT IMPLEMENTED
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NULL, // TODO: OPCODE 0x21 NOT IMPLEMENTED
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NULL, // TODO: OPCODE 0x22 NOT IMPLEMENTED
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NULL, // TODO: OPCODE 0x23 NOT IMPLEMENTED
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NULL, // TODO: OPCODE 0x24 NOT IMPLEMENTED
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NULL, // Invalid
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NULL, // TODO: OPCODE 0x26 NOT IMPLEMENTED
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // TODO: OPCODE 0x30 NOT IMPLEMENTED
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NULL, // TODO: OPCODE 0x31 NOT IMPLEMENTED
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NULL, // TODO: OPCODE 0x32 NOT IMPLEMENTED
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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Fast486ExtOpcodeConditionalJmp,
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Fast486ExtOpcodeConditionalJmp,
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Fast486ExtOpcodeConditionalJmp,
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Fast486ExtOpcodeConditionalJmp,
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Fast486ExtOpcodeConditionalJmp,
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Fast486ExtOpcodeConditionalJmp,
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Fast486ExtOpcodeConditionalJmp,
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Fast486ExtOpcodeConditionalJmp,
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Fast486ExtOpcodeConditionalJmp,
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Fast486ExtOpcodeConditionalJmp,
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Fast486ExtOpcodeConditionalJmp,
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Fast486ExtOpcodeConditionalJmp,
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Fast486ExtOpcodeConditionalJmp,
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Fast486ExtOpcodeConditionalJmp,
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Fast486ExtOpcodeConditionalJmp,
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Fast486ExtOpcodeConditionalJmp,
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NULL, // TODO: OPCODE 0x90 NOT IMPLEMENTED
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NULL, // TODO: OPCODE 0x91 NOT IMPLEMENTED
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NULL, // TODO: OPCODE 0x92 NOT IMPLEMENTED
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NULL, // TODO: OPCODE 0x93 NOT IMPLEMENTED
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NULL, // TODO: OPCODE 0x94 NOT IMPLEMENTED
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NULL, // TODO: OPCODE 0x95 NOT IMPLEMENTED
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NULL, // TODO: OPCODE 0x96 NOT IMPLEMENTED
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NULL, // TODO: OPCODE 0x97 NOT IMPLEMENTED
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NULL, // TODO: OPCODE 0x98 NOT IMPLEMENTED
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NULL, // TODO: OPCODE 0x99 NOT IMPLEMENTED
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NULL, // TODO: OPCODE 0x9A NOT IMPLEMENTED
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NULL, // TODO: OPCODE 0x9B NOT IMPLEMENTED
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NULL, // TODO: OPCODE 0x9C NOT IMPLEMENTED
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NULL, // TODO: OPCODE 0x9D NOT IMPLEMENTED
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NULL, // TODO: OPCODE 0x9E NOT IMPLEMENTED
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NULL, // TODO: OPCODE 0x9F NOT IMPLEMENTED
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NULL, // TODO: OPCODE 0xA0 NOT IMPLEMENTED
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NULL, // TODO: OPCODE 0xA1 NOT IMPLEMENTED
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NULL, // Invalid
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NULL, // TODO: OPCODE 0xA3 NOT IMPLEMENTED
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NULL, // TODO: OPCODE 0xA4 NOT IMPLEMENTED
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NULL, // TODO: OPCODE 0xA5 NOT IMPLEMENTED
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NULL, // Invalid
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NULL, // Invalid
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NULL, // TODO: OPCODE 0xA8 NOT IMPLEMENTED
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NULL, // TODO: OPCODE 0xA9 NOT IMPLEMENTED
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NULL, // TODO: OPCODE 0xAA NOT IMPLEMENTED
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NULL, // TODO: OPCODE 0xAB NOT IMPLEMENTED
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NULL, // TODO: OPCODE 0xAC NOT IMPLEMENTED
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NULL, // TODO: OPCODE 0xAD NOT IMPLEMENTED
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NULL, // TODO: OPCODE 0xAE NOT IMPLEMENTED
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NULL, // TODO: OPCODE 0xAF NOT IMPLEMENTED
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NULL, // TODO: OPCODE 0xB0 NOT IMPLEMENTED
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NULL, // TODO: OPCODE 0xB1 NOT IMPLEMENTED
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NULL, // TODO: OPCODE 0xB2 NOT IMPLEMENTED
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NULL, // TODO: OPCODE 0xB3 NOT IMPLEMENTED
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NULL, // TODO: OPCODE 0xB4 NOT IMPLEMENTED
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NULL, // TODO: OPCODE 0xB5 NOT IMPLEMENTED
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NULL, // TODO: OPCODE 0xB6 NOT IMPLEMENTED
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NULL, // TODO: OPCODE 0xB7 NOT IMPLEMENTED
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NULL, // TODO: OPCODE 0xB8 NOT IMPLEMENTED
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NULL, // TODO: OPCODE 0xB9 NOT IMPLEMENTED
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NULL, // TODO: OPCODE 0xBA NOT IMPLEMENTED
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NULL, // TODO: OPCODE 0xBB NOT IMPLEMENTED
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NULL, // TODO: OPCODE 0xBC NOT IMPLEMENTED
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NULL, // TODO: OPCODE 0xBD NOT IMPLEMENTED
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NULL, // TODO: OPCODE 0xBE NOT IMPLEMENTED
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NULL, // TODO: OPCODE 0xBF NOT IMPLEMENTED
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NULL, // TODO: OPCODE 0xC0 NOT IMPLEMENTED
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NULL, // TODO: OPCODE 0xC1 NOT IMPLEMENTED
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // TODO: OPCODE 0xC8 NOT IMPLEMENTED
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NULL, // TODO: OPCODE 0xC9 NOT IMPLEMENTED
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NULL, // TODO: OPCODE 0xCA NOT IMPLEMENTED
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NULL, // TODO: OPCODE 0xCB NOT IMPLEMENTED
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NULL, // TODO: OPCODE 0xCC NOT IMPLEMENTED
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NULL, // TODO: OPCODE 0xCD NOT IMPLEMENTED
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NULL, // TODO: OPCODE 0xCE NOT IMPLEMENTED
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NULL, // TODO: OPCODE 0xCF NOT IMPLEMENTED
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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NULL, // Invalid
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};
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/* PUBLIC FUNCTIONS ***********************************************************/
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FAST486_OPCODE_HANDLER(Fast486ExtOpcodeConditionalJmp)
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{
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BOOLEAN Jump = FALSE;
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LONG Offset = 0;
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BOOLEAN Size = State->SegmentRegs[FAST486_REG_CS].Size;
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if (State->PrefixFlags & FAST486_PREFIX_OPSIZE)
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{
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/* The OPSIZE prefix toggles the size */
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Size = !Size;
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}
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if (State->PrefixFlags & FAST486_PREFIX_LOCK)
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{
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/* Invalid prefix */
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Fast486Exception(State, FAST486_EXCEPTION_UD);
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return FALSE;
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}
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/* Make sure this is the right instruction */
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ASSERT((Opcode & 0xF0) == 0x80);
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/* Fetch the offset */
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if (Size)
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{
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if (!Fast486FetchDword(State, (PULONG)&Offset))
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{
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/* Exception occurred */
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return FALSE;
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}
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}
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else
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{
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SHORT Value;
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if (!Fast486FetchWord(State, (PUSHORT)&Value))
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{
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/* Exception occurred */
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return FALSE;
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}
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/* Sign-extend */
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Offset = (LONG)Value;
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}
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switch ((Opcode & 0x0F) >> 1)
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{
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/* JO / JNO */
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case 0:
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{
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Jump = State->Flags.Of;
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break;
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}
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/* JC / JNC */
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case 1:
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{
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Jump = State->Flags.Cf;
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break;
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}
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/* JZ / JNZ */
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case 2:
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{
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Jump = State->Flags.Zf;
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break;
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}
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/* JBE / JNBE */
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case 3:
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{
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Jump = State->Flags.Cf || State->Flags.Zf;
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break;
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}
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/* JS / JNS */
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case 4:
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{
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Jump = State->Flags.Sf;
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break;
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}
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/* JP / JNP */
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case 5:
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{
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Jump = State->Flags.Pf;
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break;
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}
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/* JL / JNL */
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case 6:
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{
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Jump = State->Flags.Sf != State->Flags.Of;
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break;
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}
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/* JLE / JNLE */
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case 7:
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{
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Jump = (State->Flags.Sf != State->Flags.Of) || State->Flags.Zf;
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break;
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}
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}
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if (Opcode & 1)
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{
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/* Invert the result */
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Jump = !Jump;
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}
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if (Jump)
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{
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/* Move the instruction pointer */
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State->InstPtr.Long += Offset;
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}
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/* Return success */
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return TRUE;
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}
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FAST486_OPCODE_HANDLER(Fast486ExtOpcodeConditionalSet)
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{
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BOOLEAN Value = FALSE;
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BOOLEAN AddressSize = State->SegmentRegs[FAST486_REG_CS].Size;
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FAST486_MOD_REG_RM ModRegRm;
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if (State->PrefixFlags & FAST486_PREFIX_ADSIZE)
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{
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/* The OPSIZE prefix toggles the size */
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AddressSize = !AddressSize;
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}
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/* Get the operands */
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if (!Fast486ParseModRegRm(State, AddressSize, &ModRegRm))
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{
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/* Exception occurred */
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return FALSE;
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}
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/* Make sure this is the right instruction */
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ASSERT((Opcode & 0xF0) == 0x90);
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switch ((Opcode & 0x0F) >> 1)
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{
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/* SETO / SETNO */
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case 0:
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{
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Value = State->Flags.Of;
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break;
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}
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/* SETC / SETNC */
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case 1:
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{
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Value = State->Flags.Cf;
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break;
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}
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/* SETZ / SETNZ */
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case 2:
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{
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Value = State->Flags.Zf;
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break;
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}
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/* SETBE / SETNBE */
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case 3:
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{
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Value = State->Flags.Cf || State->Flags.Zf;
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break;
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}
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/* SETS / SETNS */
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case 4:
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{
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Value = State->Flags.Sf;
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break;
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}
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/* SETP / SETNP */
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case 5:
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{
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Value = State->Flags.Pf;
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break;
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}
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/* SETL / SETNL */
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case 6:
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{
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Value = State->Flags.Sf != State->Flags.Of;
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break;
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}
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/* SETLE / SETNLE */
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case 7:
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{
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Value = (State->Flags.Sf != State->Flags.Of) || State->Flags.Zf;
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break;
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}
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}
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if (Opcode & 1)
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{
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/* Invert the result */
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Value = !Value;
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}
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/* Write back the result */
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return Fast486WriteModrmByteOperands(State, &ModRegRm, FALSE, Value);
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}
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FAST486_OPCODE_HANDLER(Fast486OpcodeExtended)
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{
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UCHAR SecondOpcode;
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/* Fetch the second operation code */
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if (!Fast486FetchByte(State, &SecondOpcode))
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{
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/* Exception occurred */
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return FALSE;
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}
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if (Fast486ExtendedHandlers[SecondOpcode] != NULL)
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{
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/* Call the extended opcode handler */
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return Fast486ExtendedHandlers[SecondOpcode](State, SecondOpcode);
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}
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else
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{
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/* This is not a valid opcode */
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Fast486Exception(State, FAST486_EXCEPTION_UD);
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return FALSE;
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}
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}
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