com.cmpware.cmp.models
Class Xtensa

java.lang.Object
  com.cmpware.cmp.Memory
      com.cmpware.cmp.Processor
          com.cmpware.tools.AutoModel
              com.cmpware.cmp.models.Xtensa

All Implemented Interfaces:

ReadWriteInterface

Direct Known Subclasses:

XtensaEX

public class Xtensa
extends AutoModel

This is an AutoModel implementation of the Tensilica Xtensa processor.

Copyright (c) 2006 Cmpware, Inc. All Rights Reserved.

Author:

SAG

Nested Class Summary

(package private) static class

Xtensa.SREG This class defines the Special Register indicies

Nested classes/interfaces inherited from class com.cmpware.tools.AutoModel

AutoModel.Asm, AutoModel.Decode, AutoModel.Field, AutoModel.Format, AutoModel.Function, AutoModel.Instruction, AutoModel.Symbol

Field Summary

protected static AutoModel.Format	all24
protected int	ar The value in the 'r' register
protected int	as The value in the 's' register
protected int	at The value in the 'r' register
static java.lang.String	copyright Copyright string
protected static AutoModel.Format	extui
protected static AutoModel.Field	f_all24
protected static AutoModel.Field	f_b
protected static AutoModel.Field	f_b16_17
protected static AutoModel.Field	f_b16_18
protected static AutoModel.Field	f_b18_19
protected static AutoModel.Field	f_b19
protected static AutoModel.Field	f_b8
protected static AutoModel.Field	f_b8_9
protected static AutoModel.Field	f_bHi
protected static AutoModel.Field	f_imm12
protected static AutoModel.Field	f_imm12Hi
protected static AutoModel.Field	f_imm16
protected static AutoModel.Field	f_imm8
protected static AutoModel.Field	f_mask
protected static AutoModel.Field	f_nall16
protected static AutoModel.Field	f_nimm6Hi
protected static AutoModel.Field	f_nop0
protected static AutoModel.Field	f_nr
protected static AutoModel.Field	f_nrimm
protected static AutoModel.Field	f_nrop
protected static AutoModel.Field	f_ns
protected static AutoModel.Field	f_nt
protected static AutoModel.Field	f_ntimm
protected static AutoModel.Field	f_ntimm7Hi
protected static AutoModel.Field	f_offset
protected static AutoModel.Field	f_op0
protected static AutoModel.Field	f_op1
protected static AutoModel.Field	f_op1Hi
protected static AutoModel.Field	f_op2
protected static AutoModel.Field	f_op2Hi
protected static AutoModel.Field	f_r
protected static AutoModel.Field	f_rimm
protected static AutoModel.Field	f_rop
protected static AutoModel.Field	f_ropHi
protected static AutoModel.Field	f_s
protected static AutoModel.Field	f_sHi
protected static AutoModel.Field	f_simm
protected static AutoModel.Field	f_simm4
protected static AutoModel.Field	f_simm5Hi
protected static AutoModel.Field	f_sop
protected static AutoModel.Field	f_sr
protected static AutoModel.Field	f_t
protected static AutoModel.Field	f_timm
protected static AutoModel.Field	f_timm5Hi
protected static AutoModel.Field	f_top
protected static AutoModel.Format	i18
protected int	imm8 The zero-extended 8-bit immediate data
protected static AutoModel.Format	nrsi4
protected static AutoModel.Format	nrst
protected static AutoModel.Format	nsi6
protected static AutoModel.Format	nsi7
protected static AutoModel.Format	nts
protected static AutoModel.Format	ntsi4
protected static AutoModel.Format	rs
protected static AutoModel.Format	rsi5
protected static AutoModel.Format	rst
protected static AutoModel.Format	rt
protected static AutoModel.Format	rti5
protected static AutoModel.Format	rtsi4
protected static AutoModel.Format	s
protected static AutoModel.Format	sbi8
protected static AutoModel.Format	si12
protected static AutoModel.Format	si5
protected static AutoModel.Format	sri4i8
protected static AutoModel.Format	sti8
protected static AutoModel.Format	ti12
protected static AutoModel.Format	ti16
protected static AutoModel.Format	ts
protected static AutoModel.Format	tsi8
protected static AutoModel.Format	tsr

Fields inherited from class com.cmpware.tools.AutoModel

currentInstr, currentInstrType, instructionSizes, TRACE

Fields inherited from class com.cmpware.cmp.Processor

bkpt, branchAddr, branchDelay, breakpointHit, currentBranchDelay, currentInstrCode, cycleCount, elf, idlePower, iMix, instructionSize, name, noop, opcodeName, pc, prevInstr, prevInstrCode, r, regName, runningPower, sr, sregName, stall, stallCount

Fields inherited from class com.cmpware.cmp.Memory

BIG, LITTLE

Constructor Summary

Xtensa()
The constructor

Method Summary

protected static AutoModel.Decode	all24(int _all24) This is just a simple helper function used in decoding instructions.
static void	main(java.lang.String[] args) This enables the stand-alone assembler and disassembler.
protected static AutoModel.Decode	nall16(int _all16) This is just a simple helper function used in decoding 'narrow' instructions.
protected static AutoModel.Decode	nop(int _nop0) This is just a simple helper function used in decoding 'narrow' instructions.
protected static AutoModel.Decode	op(int _op0) This is just a simple helper function used in decoding instructions.
protected static AutoModel.Decode	op(int _op0, int _op1) This is just a simple helper function used in decoding instructions.
protected static AutoModel.Decode	op(int _op0, int _op1, int _op2) This is just a simple helper function used in decoding instructions.
void	postExecute(int instr) This method is called immediately after execution and may be overloaded to do things like save instruction field values to locals.
void	preExecute(int instr) This method is called immediately before execution and may be overloaded to do things like save instruction field values to locals.
void	reset() This method resets the processor.

Methods inherited from class com.cmpware.tools.AutoModel

advancePC, asmFixup, bitsToBytes, concatenate, dasm, dasm, dasmFixup, decode, defineInstructions, execute, fetch, fetch, getInstruction, getInstructions, getInstructionSizes, getPC, getSymbolNames, instrMatch, main, setPC, signExtend, signExtend, toHexString, toHexString, toLong, traceOff, traceOn

Methods inherited from class com.cmpware.cmp.Processor

branch, branchNoDelay, defineBranchDelay, defineBreakpoint, defineInstructionSize, defineName, defineNoop, defineOpcodeNames, defineRegisterNames, defineRegisters, defineSpecialRegisterNames, defineSpecialRegisters, get, getBreakpoint, getBreakpointData, getBreakpoints, getCycleCount, getDebugRegisters, getElf, getIdlePower, getInstructionMix, getInstructionSize, getName, getNoop, getOpcodeNames, getRegister, getRegisterNames, getRegisters, getRunningPower, getSpecialRegister, getSpecialRegisterNames, getSpecialRegisters, getStallCount, isBreakpoint, isStalled, load, postLoad, removeAllBreakpoints, removeBreakpoint, setBreakpoint, setIdlePower, setRegister, setRunningPower, setSpecialRegister, stall, statistics, step

Methods inherited from class com.cmpware.cmp.Memory

addInput, addMemory, addOutput, getEndian, getLocalMemory, getMemoryManager, getMmio, getProfile, hexDump, hexDump, isReadable, isValidAddress, isWriteable, profile, read, read, read16, read24, read32, read64, removeMemory, resize, setEndian, size, toInt, toShort, write, write, write16, write24, write32, write64

Methods inherited from class java.lang.Object

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

Field Detail

copyright

public static final java.lang.String copyright

Copyright string

See Also:

Constant Field Values

at

protected int at

The value in the 'r' register

as

protected int as

The value in the 's' register

ar

protected int ar

The value in the 'r' register

imm8

protected int imm8

The zero-extended 8-bit immediate data

f_op0

protected static final AutoModel.Field f_op0

f_t

protected static final AutoModel.Field f_t

f_top

protected static final AutoModel.Field f_top

f_timm

protected static final AutoModel.Field f_timm

f_timm5Hi

protected static final AutoModel.Field f_timm5Hi

f_simm5Hi

protected static final AutoModel.Field f_simm5Hi

f_s

protected static final AutoModel.Field f_s

f_sop

protected static final AutoModel.Field f_sop

f_simm

protected static final AutoModel.Field f_simm

f_imm12Hi

protected static final AutoModel.Field f_imm12Hi

f_r

protected static final AutoModel.Field f_r

f_rimm

protected static final AutoModel.Field f_rimm

f_rop

protected static final AutoModel.Field f_rop

f_op1

protected static final AutoModel.Field f_op1

f_op2

protected static final AutoModel.Field f_op2

f_op2Hi

protected static final AutoModel.Field f_op2Hi

f_imm8

protected static final AutoModel.Field f_imm8

f_imm12

protected static final AutoModel.Field f_imm12

f_imm16

protected static final AutoModel.Field f_imm16

f_sr

protected static final AutoModel.Field f_sr

f_b

protected static final AutoModel.Field f_b

f_bHi

protected static final AutoModel.Field f_bHi

f_ropHi

protected static final AutoModel.Field f_ropHi

f_offset

protected static final AutoModel.Field f_offset

f_b18_19

protected static final AutoModel.Field f_b18_19

f_b16_17

protected static final AutoModel.Field f_b16_17

f_mask

protected static final AutoModel.Field f_mask

f_simm4

protected static final AutoModel.Field f_simm4

f_sHi

protected static final AutoModel.Field f_sHi

f_op1Hi

protected static final AutoModel.Field f_op1Hi

f_b19

protected static final AutoModel.Field f_b19

f_b16_18

protected static final AutoModel.Field f_b16_18

f_all24

protected static final AutoModel.Field f_all24

f_nop0

protected static final AutoModel.Field f_nop0

f_nr

protected static final AutoModel.Field f_nr

f_nrop

protected static final AutoModel.Field f_nrop

f_nrimm

protected static final AutoModel.Field f_nrimm

f_ns

protected static final AutoModel.Field f_ns

f_nt

protected static final AutoModel.Field f_nt

f_ntimm7Hi

protected static final AutoModel.Field f_ntimm7Hi

f_ntimm

protected static final AutoModel.Field f_ntimm

f_b8_9

protected static final AutoModel.Field f_b8_9

f_b8

protected static final AutoModel.Field f_b8

f_nimm6Hi

protected static final AutoModel.Field f_nimm6Hi

f_nall16

protected static final AutoModel.Field f_nall16

rt

protected static final AutoModel.Format rt

rst

protected static final AutoModel.Format rst

ts

protected static final AutoModel.Format ts

rs

protected static final AutoModel.Format rs

tsi8

protected static final AutoModel.Format tsi8

sbi8

protected static final AutoModel.Format sbi8

sti8

protected static final AutoModel.Format sti8

sri4i8

protected static final AutoModel.Format sri4i8

si12

protected static final AutoModel.Format si12

i18

protected static final AutoModel.Format i18

extui

protected static final AutoModel.Format extui

s

protected static final AutoModel.Format s

all24

protected static final AutoModel.Format all24

ti16

protected static final AutoModel.Format ti16

ti12

protected static final AutoModel.Format ti12

tsr

protected static final AutoModel.Format tsr

rsi5

protected static final AutoModel.Format rsi5

rti5

protected static final AutoModel.Format rti5

rtsi4

protected static final AutoModel.Format rtsi4

si5

protected static final AutoModel.Format si5

nrst

protected static final AutoModel.Format nrst

nrsi4

protected static final AutoModel.Format nrsi4

ntsi4

protected static final AutoModel.Format ntsi4

nsi6

protected static final AutoModel.Format nsi6

nts

protected static final AutoModel.Format nts

nsi7

protected static final AutoModel.Format nsi7

Constructor Detail

Xtensa

public Xtensa()

The constructor

Method Detail

main

public static void main(java.lang.String[] args)

This enables the stand-alone assembler and disassembler. The command line should be either: java Xtensa -dasm or java Xtensa -asm

Parameters:

args - the command line arguments.

reset

public void reset()

This method resets the processor. Note that super.reset() must me called to completely intialize the processor.

Overrides:

reset in class Processor

preExecute

public void preExecute(int instr)

Description copied from class: AutoModel

This method is called immediately before execution and may be overloaded to do things like save instruction field values to locals.

Overrides:

preExecute in class AutoModel

Parameters:

instr - The instruction

postExecute

public void postExecute(int instr)

Description copied from class: AutoModel

This method is called immediately after execution and may be overloaded to do things like save instruction field values to locals.

Overrides:

postExecute in class AutoModel

Parameters:

instr - The instruction

op

protected static AutoModel.Decode op(int _op0)

This is just a simple helper function used in decoding instructions. It mostly just makes the Instruction table easier to read.

Parameters:

_op0 - The op0 opcode.

Returns:

This method returns a decoder for a one opcode instruction.

op

protected static AutoModel.Decode op(int _op0,
                                     int _op1)

This is just a simple helper function used in decoding instructions. It mostly just makes the Instruction table easier to read.

Parameters:

_op0 - The op0 opcode.

_op1 - The op1 opcode.

Returns:

This method returns a decoder for a two opcode instruction.

op

protected static AutoModel.Decode op(int _op0,
                                     int _op1,
                                     int _op2)

This is just a simple helper function used in decoding instructions. It mostly just makes the Instruction table easier to read.

Parameters:

_op0 - The op0 opcode.

_op1 - The op1 opcode.

_op2 - The op2 opcode.

Returns:

This method returns a decoder for a three opcode instruction.

all24

protected static AutoModel.Decode all24(int _all24)

This is just a simple helper function used in decoding instructions. It mostly just makes the Instruction table easier to read.

Parameters:

_all24 - The 24 bit opcode.

Returns:

This method returns a decoder for a 24-bit instruction.

nop

protected static AutoModel.Decode nop(int _nop0)

This is just a simple helper function used in decoding 'narrow' instructions. It mostly just makes the Instruction table easier to read.

Parameters:

_nop0 - The narrow op0 opcode.

Returns:

This method returns a decoder for a one opcode 'narrow' instruction.

nall16

protected static AutoModel.Decode nall16(int _all16)

This is just a simple helper function used in decoding 'narrow' instructions. It mostly just makes the Instruction table easier to read.

Parameters:

_all16 - The 16 bit opcode.

Returns:

This method returns a decoder for a 'narrow' 16-bit instruction.