hades.models.mips.core
Class Decoder

java.lang.Object
  hades.models.mips.core.Decoder

All Implemented Interfaces:

Resetable

public class Decoder

extends java.lang.Object

implements Resetable

The decoder is able to identify an instruction and give back the right instruction object to the caller.

Field Summary

protected AddImmInstr	addImmInstr
protected AddImmUInstr	addImmUInstr
protected AddInstr	addInstr
protected AddUInstr	addUInstr
protected AndImmInstr	andImmInstr
protected AndInstr	andInstr
protected BaseInstr[]	branchDecode
protected BranchEqualInstr	branchEqualInstr
protected BranchGreaterEqualAndLinkInstr	branchGreaterEqualAndLinkInstr
protected BranchGreaterEqualInstr	branchGreaterEqualInstr
protected BranchGreaterInstr	branchGreaterInstr
protected BranchLessAndLinkInstr	branchLessAndLinkInstr
protected BranchLessEqualInstr	branchLessEqualInstr
protected BranchLessInstr	branchLessInstr
protected BranchNotEqualInstr	branchNotEqualInstr
protected BreakInstr	breakInstr
protected CoprocInstr	coproc0Instr
protected CoprocInstr	coproc1Instr
protected CoprocInstr	coproc2Instr
protected CoprocInstr	coproc3Instr
protected boolean	debug
protected DivInstr	divInstr
protected DivUInstr	divUInstr
protected IllegalInstr	illegalInstr
protected BaseInstr[]	instrDecode
protected int	instrFrameNumber
protected JumpAndLinkInstr	jumpAndLinkInstr
protected JumpInstr	jumpInstr
protected JumpRegAndLinkInstr	jumpRegAndLinkInstr
protected JumpRegInstr	jumpRegInstr
protected LoadByteInstr	loadByteInstr
protected LoadByteUInstr	loadByteUInstr
protected LoadHalfInstr	loadHalfInstr
protected LoadHalfUInstr	loadHalfUInstr
protected LoadUpperImmInstr	loadUpperImmInstr
protected LoadWordInstr	loadWordInstr
protected LoadWordLeftInstr	loadWordLeftInstr
protected LoadWordRightInstr	loadWordRightInstr
protected LoadWordToCoInstr	loadWordToCo0Instr
protected LoadWordToCoInstr	loadWordToCo1Instr
protected LoadWordToCoInstr	loadWordToCo2Instr
protected LoadWordToCoInstr	loadWordToCo3Instr
protected MoveFromHiInstr	moveFromHiInstr
protected MoveFromLoInstr	moveFromLoInstr
protected MoveToHiInstr	moveToHiInstr
protected MoveToLoInstr	moveToLoInstr
protected MultInstr	multInstr
protected MultUInstr	multUInstr
protected NopInstr	nopInstr
protected NOrInstr	norInstr
protected static int	OP_ADD
protected static int	OP_ADDI
protected static int	OP_ADDIU
protected static int	OP_ADDU
protected static int	OP_AND
protected static int	OP_ANDI
protected static int	OP_BCOND
protected static int	OP_BEQ
protected static int	OP_BGEZ
protected static int	OP_BGEZAL
protected static int	OP_BGTZ
protected static int	OP_BLEZ
protected static int	OP_BLTZ
protected static int	OP_BLTZAL
protected static int	OP_BNE
protected static int	OP_BREAK
protected static int	OP_COP0
protected static int	OP_COP1
protected static int	OP_COP2
protected static int	OP_COP3
protected static int	OP_DIV
protected static int	OP_DIVU
protected static int	OP_J
protected static int	OP_JAL
protected static int	OP_JALR
protected static int	OP_JR
protected static int	OP_LB
protected static int	OP_LBU
protected static int	OP_LH
protected static int	OP_LHU
protected static int	OP_LUI
protected static int	OP_LW
protected static int	OP_LWC0
protected static int	OP_LWC1
protected static int	OP_LWC2
protected static int	OP_LWC3
protected static int	OP_LWL
protected static int	OP_LWR
protected static int	OP_MFHI
protected static int	OP_MFLO
protected static int	OP_MTHI
protected static int	OP_MTLO
protected static int	OP_MULT
protected static int	OP_MULTU
protected static int	OP_NOP
protected static int	OP_NOR
protected static int	OP_OR
protected static int	OP_ORI
protected static int	OP_SB
protected static int	OP_SH
protected static int	OP_SLL
protected static int	OP_SLLV
protected static int	OP_SLT
protected static int	OP_SLTI
protected static int	OP_SLTIU
protected static int	OP_SLTU
protected static int	OP_SPECIAL
protected static int	OP_SRA
protected static int	OP_SRAV
protected static int	OP_SRL
protected static int	OP_SRLV
protected static int	OP_SUB
protected static int	OP_SUBU
protected static int	OP_SW
protected static int	OP_SWC0
protected static int	OP_SWC1
protected static int	OP_SWC2
protected static int	OP_SWC3
protected static int	OP_SWL
protected static int	OP_SWR
protected static int	OP_SYSCALL
protected static int	OP_XOR
protected static int	OP_XORI
protected OrImmInstr	orImmInstr
protected OrInstr	orInstr
protected PartHandler	partHandler
protected SetOnLessImmInstr	setOnLessImmInstr
protected SetOnLessImmUInstr	setOnLessImmUInstr
protected SetOnLessInstr	setOnLessInstr
protected SetOnLessUInstr	setOnLessUInstr
protected ShiftLeftLogicalInstr	shiftLeftLogicalInstr
protected ShiftLeftLogicalVarInstr	shiftLeftLogicalVarInstr
protected ShiftRightArithInstr	shiftRightArithInstr
protected ShiftRightArithVarInstr	shiftRightArithVarInstr
protected ShiftRightLogicalInstr	shiftRightLogicalInstr
protected ShiftRightLogicalVarInstr	shiftRightLogicalVarInstr
protected BaseInstr[]	specialDecode
protected Splitter	splitter
protected StoreByteInstr	storeByteInstr
protected StoreHalfInstr	storeHalfInstr
protected StoreWordFromCoInstr	storeWordFromCo0Instr
protected StoreWordFromCoInstr	storeWordFromCo1Instr
protected StoreWordFromCoInstr	storeWordFromCo2Instr
protected StoreWordFromCoInstr	storeWordFromCo3Instr
protected StoreWordInstr	storeWordInstr
protected StoreWordLeftInstr	storeWordLeftInstr
protected StoreWordRightInstr	storeWordRightInstr
protected SubInstr	subInstr
protected SubUInstr	subUInstr
protected SysCallInstr	sysCallInstr
protected XOrImmInstr	xorImmInstr
protected XOrInstr	xorInstr

Constructor Summary

Decoder(PartHandler newPartHandler, Splitter newSplitter, int newInstrFrameNumber)
Initialization

Method Summary

BaseInstr	decode() decode is able to return an instruction object when the splitter has splitted a valid instruction word.
boolean	getLog()
BaseInstr	getNopInstr() For initialization it is possible to get the NOP instruction object
protected void	initDecode()
void	por() Power on reset or hardware reset
void	reset() software reset
void	setLog(boolean newDebug)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

partHandler

protected PartHandler partHandler

instrFrameNumber

protected int instrFrameNumber

debug

protected boolean debug

instrDecode

protected BaseInstr[] instrDecode

specialDecode

protected BaseInstr[] specialDecode

branchDecode

protected BaseInstr[] branchDecode

splitter

protected Splitter splitter

OP_SPECIAL

protected static final int OP_SPECIAL

See Also:

Constant Field Values

OP_BCOND

protected static final int OP_BCOND

See Also:

Constant Field Values

OP_J

protected static final int OP_J

See Also:

Constant Field Values

OP_JAL

protected static final int OP_JAL

See Also:

Constant Field Values

OP_BEQ

protected static final int OP_BEQ

See Also:

Constant Field Values

OP_BNE

protected static final int OP_BNE

See Also:

Constant Field Values

OP_BLEZ

protected static final int OP_BLEZ

See Also:

Constant Field Values

OP_BGTZ

protected static final int OP_BGTZ

See Also:

Constant Field Values

OP_ADDI

protected static final int OP_ADDI

See Also:

Constant Field Values

OP_ADDIU

protected static final int OP_ADDIU

See Also:

Constant Field Values

OP_SLTI

protected static final int OP_SLTI

See Also:

Constant Field Values

OP_SLTIU

protected static final int OP_SLTIU

See Also:

Constant Field Values

OP_ANDI

protected static final int OP_ANDI

See Also:

Constant Field Values

OP_ORI

protected static final int OP_ORI

See Also:

Constant Field Values

OP_XORI

protected static final int OP_XORI

See Also:

Constant Field Values

OP_LUI

protected static final int OP_LUI

See Also:

Constant Field Values

OP_COP0

protected static final int OP_COP0

See Also:

Constant Field Values

OP_COP1

protected static final int OP_COP1

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Constant Field Values

OP_COP2

protected static final int OP_COP2

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Constant Field Values

OP_COP3

protected static final int OP_COP3

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Constant Field Values

OP_LB

protected static final int OP_LB

See Also:

Constant Field Values

OP_LH

protected static final int OP_LH

See Also:

Constant Field Values

OP_LWL

protected static final int OP_LWL

See Also:

Constant Field Values

OP_LW

protected static final int OP_LW

See Also:

Constant Field Values

OP_LBU

protected static final int OP_LBU

See Also:

Constant Field Values

OP_LHU

protected static final int OP_LHU

See Also:

Constant Field Values

OP_LWR

protected static final int OP_LWR

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Constant Field Values

OP_SB

protected static final int OP_SB

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Constant Field Values

OP_SH

protected static final int OP_SH

See Also:

Constant Field Values

OP_SWL

protected static final int OP_SWL

See Also:

Constant Field Values

OP_SW

protected static final int OP_SW

See Also:

Constant Field Values

OP_SWR

protected static final int OP_SWR

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Constant Field Values

OP_LWC0

protected static final int OP_LWC0

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Constant Field Values

OP_LWC1

protected static final int OP_LWC1

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Constant Field Values

OP_LWC2

protected static final int OP_LWC2

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Constant Field Values

OP_LWC3

protected static final int OP_LWC3

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Constant Field Values

OP_SWC0

protected static final int OP_SWC0

See Also:

Constant Field Values

OP_SWC1

protected static final int OP_SWC1

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Constant Field Values

OP_SWC2

protected static final int OP_SWC2

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Constant Field Values

OP_SWC3

protected static final int OP_SWC3

See Also:

Constant Field Values

OP_NOP

protected static final int OP_NOP

See Also:

Constant Field Values

OP_SLL

protected static final int OP_SLL

See Also:

Constant Field Values

OP_SRL

protected static final int OP_SRL

See Also:

Constant Field Values

OP_SRA

protected static final int OP_SRA

See Also:

Constant Field Values

OP_SLLV

protected static final int OP_SLLV

See Also:

Constant Field Values

OP_SRLV

protected static final int OP_SRLV

See Also:

Constant Field Values

OP_SRAV

protected static final int OP_SRAV

See Also:

Constant Field Values

OP_JR

protected static final int OP_JR

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Constant Field Values

OP_JALR

protected static final int OP_JALR

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Constant Field Values

OP_SYSCALL

protected static final int OP_SYSCALL

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Constant Field Values

OP_BREAK

protected static final int OP_BREAK

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Constant Field Values

OP_MFHI

protected static final int OP_MFHI

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Constant Field Values

OP_MTHI

protected static final int OP_MTHI

See Also:

Constant Field Values

OP_MFLO

protected static final int OP_MFLO

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Constant Field Values

OP_MTLO

protected static final int OP_MTLO

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Constant Field Values

OP_MULT

protected static final int OP_MULT

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Constant Field Values

OP_MULTU

protected static final int OP_MULTU

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Constant Field Values

OP_DIV

protected static final int OP_DIV

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Constant Field Values

OP_DIVU

protected static final int OP_DIVU

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Constant Field Values

OP_ADD

protected static final int OP_ADD

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Constant Field Values

OP_ADDU

protected static final int OP_ADDU

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Constant Field Values

OP_SUB

protected static final int OP_SUB

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Constant Field Values

OP_SUBU

protected static final int OP_SUBU

See Also:

Constant Field Values

OP_AND

protected static final int OP_AND

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Constant Field Values

OP_OR

protected static final int OP_OR

See Also:

Constant Field Values

OP_XOR

protected static final int OP_XOR

See Also:

Constant Field Values

OP_NOR

protected static final int OP_NOR

See Also:

Constant Field Values

OP_SLT

protected static final int OP_SLT

See Also:

Constant Field Values

OP_SLTU

protected static final int OP_SLTU

See Also:

Constant Field Values

OP_BLTZ

protected static final int OP_BLTZ

See Also:

Constant Field Values

OP_BGEZ

protected static final int OP_BGEZ

See Also:

Constant Field Values

OP_BLTZAL

protected static final int OP_BLTZAL

See Also:

Constant Field Values

OP_BGEZAL

protected static final int OP_BGEZAL

See Also:

Constant Field Values

loadWordInstr

protected LoadWordInstr loadWordInstr

loadHalfInstr

protected LoadHalfInstr loadHalfInstr

loadHalfUInstr

protected LoadHalfUInstr loadHalfUInstr

loadByteInstr

protected LoadByteInstr loadByteInstr

loadByteUInstr

protected LoadByteUInstr loadByteUInstr

storeWordInstr

protected StoreWordInstr storeWordInstr

storeHalfInstr

protected StoreHalfInstr storeHalfInstr

storeByteInstr

protected StoreByteInstr storeByteInstr

loadWordLeftInstr

protected LoadWordLeftInstr loadWordLeftInstr

loadWordRightInstr

protected LoadWordRightInstr loadWordRightInstr

storeWordLeftInstr

protected StoreWordLeftInstr storeWordLeftInstr

storeWordRightInstr

protected StoreWordRightInstr storeWordRightInstr

addImmInstr

protected AddImmInstr addImmInstr

addImmUInstr

protected AddImmUInstr addImmUInstr

setOnLessImmInstr

protected SetOnLessImmInstr setOnLessImmInstr

setOnLessImmUInstr

protected SetOnLessImmUInstr setOnLessImmUInstr

andImmInstr

protected AndImmInstr andImmInstr

orImmInstr

protected OrImmInstr orImmInstr

xorImmInstr

protected XOrImmInstr xorImmInstr

loadUpperImmInstr

protected LoadUpperImmInstr loadUpperImmInstr

addInstr

protected AddInstr addInstr

addUInstr

protected AddUInstr addUInstr

subInstr

protected SubInstr subInstr

subUInstr

protected SubUInstr subUInstr

setOnLessInstr

protected SetOnLessInstr setOnLessInstr

setOnLessUInstr

protected SetOnLessUInstr setOnLessUInstr

andInstr

protected AndInstr andInstr

orInstr

protected OrInstr orInstr

xorInstr

protected XOrInstr xorInstr

norInstr

protected NOrInstr norInstr

shiftLeftLogicalInstr

protected ShiftLeftLogicalInstr shiftLeftLogicalInstr

shiftRightLogicalInstr

protected ShiftRightLogicalInstr shiftRightLogicalInstr

shiftRightArithInstr

protected ShiftRightArithInstr shiftRightArithInstr

shiftLeftLogicalVarInstr

protected ShiftLeftLogicalVarInstr shiftLeftLogicalVarInstr

shiftRightLogicalVarInstr

protected ShiftRightLogicalVarInstr shiftRightLogicalVarInstr

shiftRightArithVarInstr

protected ShiftRightArithVarInstr shiftRightArithVarInstr

multInstr

protected MultInstr multInstr

multUInstr

protected MultUInstr multUInstr

divInstr

protected DivInstr divInstr

divUInstr

protected DivUInstr divUInstr

moveFromLoInstr

protected MoveFromLoInstr moveFromLoInstr

moveFromHiInstr

protected MoveFromHiInstr moveFromHiInstr

moveToLoInstr

protected MoveToLoInstr moveToLoInstr

moveToHiInstr

protected MoveToHiInstr moveToHiInstr

loadWordToCo0Instr

protected LoadWordToCoInstr loadWordToCo0Instr

loadWordToCo1Instr

protected LoadWordToCoInstr loadWordToCo1Instr

loadWordToCo2Instr

protected LoadWordToCoInstr loadWordToCo2Instr

loadWordToCo3Instr

protected LoadWordToCoInstr loadWordToCo3Instr

storeWordFromCo0Instr

protected StoreWordFromCoInstr storeWordFromCo0Instr

storeWordFromCo1Instr

protected StoreWordFromCoInstr storeWordFromCo1Instr

storeWordFromCo2Instr

protected StoreWordFromCoInstr storeWordFromCo2Instr

storeWordFromCo3Instr

protected StoreWordFromCoInstr storeWordFromCo3Instr

coproc0Instr

protected CoprocInstr coproc0Instr

coproc1Instr

protected CoprocInstr coproc1Instr

coproc2Instr

protected CoprocInstr coproc2Instr

coproc3Instr

protected CoprocInstr coproc3Instr

jumpInstr

protected JumpInstr jumpInstr

jumpAndLinkInstr

protected JumpAndLinkInstr jumpAndLinkInstr

jumpRegInstr

protected JumpRegInstr jumpRegInstr

jumpRegAndLinkInstr

protected JumpRegAndLinkInstr jumpRegAndLinkInstr

branchEqualInstr

protected BranchEqualInstr branchEqualInstr

branchNotEqualInstr

protected BranchNotEqualInstr branchNotEqualInstr

branchLessInstr

protected BranchLessInstr branchLessInstr

branchLessAndLinkInstr

protected BranchLessAndLinkInstr branchLessAndLinkInstr

branchLessEqualInstr

protected BranchLessEqualInstr branchLessEqualInstr

branchGreaterInstr

protected BranchGreaterInstr branchGreaterInstr

branchGreaterEqualInstr

protected BranchGreaterEqualInstr branchGreaterEqualInstr

branchGreaterEqualAndLinkInstr

protected BranchGreaterEqualAndLinkInstr branchGreaterEqualAndLinkInstr

breakInstr

protected BreakInstr breakInstr

sysCallInstr

protected SysCallInstr sysCallInstr

nopInstr

protected NopInstr nopInstr

illegalInstr

protected IllegalInstr illegalInstr

Constructor Detail

Decoder

public Decoder(PartHandler newPartHandler,
               Splitter newSplitter,
               int newInstrFrameNumber)

Initialization

Method Detail

initDecode

protected void initDecode()

por

public void por()

Power on reset or hardware reset

Specified by:

por in interface Resetable

reset

public void reset()

software reset

Specified by:

reset in interface Resetable

getNopInstr

public BaseInstr getNopInstr()

For initialization it is possible to get the NOP instruction object

decode

public BaseInstr decode()

decode is able to return an instruction object when the splitter has splitted a valid instruction word.

setLog

public void setLog(boolean newDebug)

getLog

public boolean getLog()