mar.virtualmachine
Class MarVM

java.lang.Object
  |
  +--physis.core.virtualmachine.VirtualMachine
        |
        +--physis.core.virtualmachine.PhysisVirtualMachine
              |
              +--mar.virtualmachine.MarVM

public class MarVM

extends PhysisVirtualMachine

Simple stack machine with one stack and one register.

Field Summary

(package private) static short	add
(package private) static short	allocate
(package private) static short	copy
(package private) static short	count_b
(package private) static short	count_f
(package private) static short	dec
(package private) static short	divide
static int	EMPTY
static int	FULL
(package private) static short	get
(package private) static short	if_less
(package private) static short	if_n_equ
(package private) static short	inc
private int	IP instruction pointer
(package private) static short	jump_b
(package private) static short	jump_f
(package private) static short	label_b
(package private) static short	label_f
(package private) static short	nand
(package private) static short	nop
(package private) static short	pop
(package private) static short	push
(package private) static short	put
private int	register
(package private) static short	rotate_b
(package private) static short	rotate_f
(package private) static short	rotate_rand
(package private) static short	shift_l
(package private) static short	shift_r
protected int	SP stack_pointer, it points to the next available element, also equals with stacksize
protected int[]	stack
static int	STACK_SIZE Size of the internal stack.
(package private) static short	sub
(package private) static short	swap
(package private) static short	top2reg
(package private) static short	zero

Fields inherited from class physis.core.virtualmachine.PhysisVirtualMachine

alien, bearer, blank, counter, gestation_time, GESTATION_TIME_INVALID, tape

Constructor Summary

MarVM()

Method Summary

(package private) void	add()
protected void	allocate()
protected void	copy()
(package private) void	count_b()
(package private) void	count_f()
(package private) void	dec()
protected void	divide()
void	execute() Executes the next instruction.
void	execute(int n) Calling this method forces te VM to execute the next N instructions.
(package private) void	get()
Genome	getGenome() Returns the genetic information.
int	getGenomeSize() Returns the size of the genome.
java.lang.String	getState() Returns the String representation of the current state of the virtualmachine including all stacks registers in the architecture and the instruction point by the instructionpointer: etc.
(package private) void	if_n_equ() If the top of the stack is less than the registercontent executes the next instruction, otherwise skips it.
(package private) void	ifless() If the top of the stack is less than the registercontent executes the next instruction, otherwise skips it.
(package private) void	inc()
(package private) void	incrementIP(int value) The instruction pointer-register is incremented.
(package private) void	jump_b()
(package private) void	jump_f()
(package private) void	nand()
(package private) void	pop()
(package private) void	push()
(package private) void	put()
void	reset() Brings the machine into the base-state.
void	restart() Brings the machine into base-state but doesn't change the gestation time.
(package private) void	rotate_b()
(package private) void	rotate_f()
(package private) void	rotate_rand()
(package private) void	setIP(int value)
(package private) void	shift_l()
(package private) void	shift_r()
(package private) void	stackClear()
(package private) boolean	stackEmpty()
(package private) boolean	stackFull()
(package private) int	stackPop()
(package private) void	stackPush(int val)
(package private) int	stackTop()
(package private) void	sub()
(package private) void	swap()
(package private) void	top2reg()
(package private) void	zero()

Methods inherited from class physis.core.virtualmachine.PhysisVirtualMachine

getBearer, getEffectiveLength, getGestationTime, loadCodeTape, setBearer

Methods inherited from class java.lang.Object

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

Field Detail

STACK_SIZE

public static final int STACK_SIZE

Size of the internal stack. (hardcoded 16, because it's the attribute of the architecture

stack

protected int[] stack

EMPTY

public static final int EMPTY

FULL

public static final int FULL

SP

protected int SP

stack_pointer, it points to the next available element, also equals with stacksize

register

private int register

IP

private int IP

instruction pointer

label_f

static final short label_f

label_b

static final short label_b

if_less

static final short if_less

if_n_equ

static final short if_n_equ

jump_f

static final short jump_f

jump_b

static final short jump_b

shift_r

static final short shift_r

shift_l

static final short shift_l

inc

static final short inc

dec

static final short dec

add

static final short add

sub

static final short sub

nand

static final short nand

swap

static final short swap

copy

static final short copy

allocate

static final short allocate

divide

static final short divide

get

static final short get

put

static final short put

count_f

static final short count_f

count_b

static final short count_b

top2reg

static final short top2reg

push

static final short push

pop

static final short pop

zero

static final short zero

rotate_f

static final short rotate_f

rotate_b

static final short rotate_b

rotate_rand

static final short rotate_rand

nop

static final short nop

Constructor Detail

MarVM

public MarVM()

Method Detail

execute

public void execute()

Executes the next instruction.

Overrides:

execute in class VirtualMachine

execute

public void execute(int n)

Description copied from class: VirtualMachine

Calling this method forces te VM to execute the next N instructions.

Overrides:

execute in class VirtualMachine

Following copied from class: physis.core.virtualmachine.VirtualMachine

Parameters:

number_of_instructions - The exact number of the instructions to be executed.

reset

public void reset()

Brings the machine into the base-state. It's used when vivivying the organism.
Stack is empty, register contains 0.

Overrides:

reset in class VirtualMachine

restart

public void restart()

Brings the machine into base-state but doesn't change the gestation time. It's used after succesfull proliferation.

Overrides:

restart in class PhysisVirtualMachine

getGenome

public Genome getGenome()

Description copied from class: PhysisVirtualMachine

Returns the genetic information.

Overrides:

getGenome in class PhysisVirtualMachine

getGenomeSize

public int getGenomeSize()

Description copied from class: PhysisVirtualMachine

Returns the size of the genome.

Overrides:

getGenomeSize in class PhysisVirtualMachine

getState

public java.lang.String getState()

Description copied from class: VirtualMachine

Returns the String representation of the current state of the virtualmachine including all stacks registers in the architecture and the instruction point by the instructionpointer: etc. It's mainly used by the debuggers or tracers.

Overrides:

getState in class VirtualMachine

incrementIP

void incrementIP(int value)

The instruction pointer-register is incremented. The codetape is circular.

Parameters:

value - the amount of incrementation

setIP

void setIP(int value)

ifless

void ifless()

If the top of the stack is less than the registercontent executes the next instruction, otherwise skips it. Empty stack is not equal.

if_n_equ

void if_n_equ()

If the top of the stack is less than the registercontent executes the next instruction, otherwise skips it. Empty stack is not equal.

jump_f

void jump_f()

jump_b

void jump_b()

shift_r

void shift_r()

shift_l

void shift_l()

inc

void inc()

dec

void dec()

add

void add()

sub

void sub()

nand

void nand()

swap

void swap()

copy

protected void copy()

allocate

protected void allocate()

divide

protected void divide()

put

void put()

get

void get()

count_f

void count_f()

count_b

void count_b()

top2reg

void top2reg()

push

void push()

pop

void pop()

rotate_f

void rotate_f()

rotate_b

void rotate_b()

rotate_rand

void rotate_rand()

zero

void zero()

stackPush

void stackPush(int val)

stackPop

int stackPop()

stackTop

int stackTop()

stackEmpty

boolean stackEmpty()

stackFull

boolean stackFull()

stackClear

void stackClear()