org.xwt.mips
Class VM

java.lang.Object
  org.xwt.mips.VM

All Implemented Interfaces:

org.xwt.mips.Errno, org.xwt.mips.Syscalls

Direct Known Subclasses:

Interpreter

public abstract class VM

extends java.lang.Object

implements org.xwt.mips.Syscalls, org.xwt.mips.Errno

Nested Class Summary

static class	VM.EmulationException
static class	VM.FaultException
static class	VM.FileDescriptor
static class	VM.FileFileInfo
class	VM.InputStreamFD
class	VM.OutputStreamFD
static class	VM.ReadFaultException
static class	VM.RegularFileDescriptor
static class	VM.WriteFaultException

Field Summary

static int	__ELASTERROR
protected static int	A0
protected static int	A1
protected static int	A2
protected static int	A3
protected static int	ARGS_ADDR
protected static int	AT
protected int	brk
protected static int	BRK_LIMIT
static int	DONE
static int	EACCES
static int	EADDRINUSE
static int	EADDRNOTAVAIL
static int	EADV
static int	EAFNOSUPPORT
static int	EAGAIN
static int	EALREADY
static int	EBADE
static int	EBADF
static int	EBADFD
static int	EBADMSG
static int	EBADR
static int	EBADRQC
static int	EBADSLT
static int	EBFONT
static int	EBUSY
static int	ECASECLASH
static int	ECHILD
static int	ECHRNG
static int	ECOMM
static int	ECONNABORTED
static int	ECONNREFUSED
static int	ECONNRESET
static int	EDEADLK
static int	EDEADLOCK
static int	EDESTADDRREQ
static int	EDOM
static int	EDOTDOT
static int	EDQUOT
static int	EEXIST
static int	EFAULT
static int	EFBIG
static int	EFTYPE
static int	EHOSTDOWN
static int	EHOSTUNREACH
static int	EIDRM
static int	EILSEQ
static int	EINPROGRESS
static int	EINTR
static int	EINVAL
static int	EIO
static int	EISCONN
static int	EISDIR
static int	ELBIN
static int	ELIBACC
static int	ELIBBAD
static int	ELIBEXEC
static int	ELIBMAX
static int	ELIBSCN
static int	ELNRNG
static int	ELOOP
static int	EMFILE
static int	EMLINK
static int	EMSGSIZE
static int	EMULTIHOP
static int	ENAMETOOLONG
static int	ENETDOWN
static int	ENETRESET
static int	ENETUNREACH
static int	ENFILE
static int	ENMFILE
static int	ENOANO
static int	ENOBUFS
static int	ENOCSI
static int	ENODATA
static int	ENODEV
static int	ENOENT
static int	ENOEXEC
static int	ENOLCK
static int	ENOLINK
static int	ENOMEDIUM
static int	ENOMEM
static int	ENOMSG
static int	ENONET
static int	ENOPKG
static int	ENOPROTOOPT
static int	ENOSHARE
static int	ENOSPC
static int	ENOSR
static int	ENOSTR
static int	ENOSYS
static int	ENOTBLK
static int	ENOTCONN
static int	ENOTDIR
static int	ENOTEMPTY
static int	ENOTSOCK
static int	ENOTSUP
static int	ENOTTY
static int	ENOTUNIQ
protected int	entryPoint
static int	ENXIO
static int	EOPNOTSUPP
static int	EOVERFLOW
static int	EPERM
static int	EPFNOSUPPORT
static int	EPIPE
static int	EPROCLIM
static int	EPROTO
static int	EPROTONOSUPPORT
static int	EPROTOTYPE
static int	ERANGE
static int	EREMCHG
static int	EREMOTE
static int	EROFS
static int	ESHUTDOWN
static int	ESOCKTNOSUPPORT
static int	ESPIPE
static int	ESRCH
static int	ESRMNT
static int	ESTALE
static int	ETIME
static int	ETIMEDOUT
static int	ETOOMANYREFS
static int	ETXTBSY
static int	EUNATCH
static int	EUSERS
static int	EXDEV
static int	EXFULL
protected int	exitStatus
protected static int	FP
protected static int	GP
protected static int	INITIAL_SP
static int	INITIALIZED
protected static int	K0
protected static int	K1
protected static int	PAGE_SHIFT
protected static int	PAGE_SIZE
protected static int	PAGE_WORDS
static int	PAUSED
static int	PID
protected static int	RA
protected int[][]	readPages
static int	RUNNING
protected static int	S0
protected static int	S1
protected static int	S2
protected static int	S3
protected static int	S4
protected static int	S5
protected static int	S6
protected static int	S7
protected static int	SP
protected static int	STACK_PAGES
protected int	state
static int	SYS_close
static int	SYS_exit
static int	SYS_fstat
static int	SYS_getpid
static int	SYS_isatty
static int	SYS_kill
static int	SYS_null
static int	SYS_open
static int	SYS_pause
static int	SYS_read
static int	SYS_sbrk
static int	SYS_seek
static int	SYS_write
protected static int	T0
protected static int	T1
protected static int	T2
protected static int	T3
protected static int	T4
protected static int	T5
protected static int	T6
protected static int	T7
protected static int	T8
protected static int	T9
protected static int	TOTAL_PAGES
static int	UNINITIALIZED
protected static int	USER_INFO_ADDR
protected static int	V0
protected static int	V1
protected int[][]	writePages
protected static int	ZERO

Constructor Summary

VM()

Method Summary

protected abstract void	_start(int pc)
void	copyin(int addr, byte[] a, int length)
void	copyout(byte[] a, int addr, int length)
java.lang.String	cstring(int addr)
abstract void	execute()
int	exitStatus()
int	getState()
int	getUserInfo(int index)
protected void	initPage(int page)
protected static int	max(int a, int b)
int	memRead(int addr)
protected void	memWrite(int addr, int value)
protected static int	min(int a, int b)
int	run(java.lang.String[] args)
int	sbrk(int incr)
void	setUserInfo(int index, int word)
void	start(java.lang.String[] args)
protected int	syscall(int syscall, int a, int b, int c, int d)
protected static java.lang.String	toHex(int n)

Methods inherited from class java.lang.Object

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

Field Detail

ZERO

protected static final int ZERO

See Also:

Constant Field Values

AT

protected static final int AT

See Also:

Constant Field Values

K0

protected static final int K0

See Also:

Constant Field Values

K1

protected static final int K1

See Also:

Constant Field Values

GP

protected static final int GP

See Also:

Constant Field Values

SP

protected static final int SP

See Also:

Constant Field Values

FP

protected static final int FP

See Also:

Constant Field Values

RA

protected static final int RA

See Also:

Constant Field Values

V0

protected static final int V0

See Also:

Constant Field Values

V1

protected static final int V1

See Also:

Constant Field Values

A0

protected static final int A0

See Also:

Constant Field Values

A1

protected static final int A1

See Also:

Constant Field Values

A2

protected static final int A2

See Also:

Constant Field Values

A3

protected static final int A3

See Also:

Constant Field Values

T0

protected static final int T0

See Also:

Constant Field Values

T1

protected static final int T1

See Also:

Constant Field Values

T2

protected static final int T2

See Also:

Constant Field Values

T3

protected static final int T3

See Also:

Constant Field Values

T4

protected static final int T4

See Also:

Constant Field Values

T5

protected static final int T5

See Also:

Constant Field Values

T6

protected static final int T6

See Also:

Constant Field Values

T7

protected static final int T7

See Also:

Constant Field Values

T8

protected static final int T8

See Also:

Constant Field Values

T9

protected static final int T9

See Also:

Constant Field Values

S0

protected static final int S0

See Also:

Constant Field Values

S1

protected static final int S1

See Also:

Constant Field Values

S2

protected static final int S2

See Also:

Constant Field Values

S3

protected static final int S3

See Also:

Constant Field Values

S4

protected static final int S4

See Also:

Constant Field Values

S5

protected static final int S5

See Also:

Constant Field Values

S6

protected static final int S6

See Also:

Constant Field Values

S7

protected static final int S7

See Also:

Constant Field Values

PAGE_SIZE

protected static final int PAGE_SIZE

See Also:

Constant Field Values

PAGE_WORDS

protected static final int PAGE_WORDS

See Also:

Constant Field Values

PAGE_SHIFT

protected static final int PAGE_SHIFT

See Also:

Constant Field Values

STACK_PAGES

protected static final int STACK_PAGES

See Also:

Constant Field Values

TOTAL_PAGES

protected static final int TOTAL_PAGES

See Also:

Constant Field Values

BRK_LIMIT

protected static final int BRK_LIMIT

See Also:

Constant Field Values

ARGS_ADDR

protected static final int ARGS_ADDR

See Also:

Constant Field Values

USER_INFO_ADDR

protected static final int USER_INFO_ADDR

See Also:

Constant Field Values

INITIAL_SP

protected static final int INITIAL_SP

See Also:

Constant Field Values

readPages

protected final int[][] readPages

writePages

protected final int[][] writePages

brk

protected int brk

entryPoint

protected int entryPoint

UNINITIALIZED

public static final int UNINITIALIZED

See Also:

Constant Field Values

INITIALIZED

public static final int INITIALIZED

See Also:

Constant Field Values

RUNNING

public static final int RUNNING

See Also:

Constant Field Values

PAUSED

public static final int PAUSED

See Also:

Constant Field Values

DONE

public static final int DONE

See Also:

Constant Field Values

state

protected int state

exitStatus

protected int exitStatus

PID

public static final int PID

See Also:

Constant Field Values

SYS_null

public static final int SYS_null

See Also:

Constant Field Values

SYS_exit

public static final int SYS_exit

See Also:

Constant Field Values

SYS_pause

public static final int SYS_pause

See Also:

Constant Field Values

SYS_open

public static final int SYS_open

See Also:

Constant Field Values

SYS_close

public static final int SYS_close

See Also:

Constant Field Values

SYS_read

public static final int SYS_read

See Also:

Constant Field Values

SYS_write

public static final int SYS_write

See Also:

Constant Field Values

SYS_sbrk

public static final int SYS_sbrk

See Also:

Constant Field Values

SYS_fstat

public static final int SYS_fstat

See Also:

Constant Field Values

SYS_isatty

public static final int SYS_isatty

See Also:

Constant Field Values

SYS_seek

public static final int SYS_seek

See Also:

Constant Field Values

SYS_kill

public static final int SYS_kill

See Also:

Constant Field Values

SYS_getpid

public static final int SYS_getpid

See Also:

Constant Field Values

EPERM

public static final int EPERM

See Also:

Constant Field Values

ENOENT

public static final int ENOENT

See Also:

Constant Field Values

ESRCH

public static final int ESRCH

See Also:

Constant Field Values

EINTR

public static final int EINTR

See Also:

Constant Field Values

EIO

public static final int EIO

See Also:

Constant Field Values

ENXIO

public static final int ENXIO

See Also:

Constant Field Values

ENOEXEC

public static final int ENOEXEC

See Also:

Constant Field Values

EBADF

public static final int EBADF

See Also:

Constant Field Values

ECHILD

public static final int ECHILD

See Also:

Constant Field Values

EAGAIN

public static final int EAGAIN

See Also:

Constant Field Values

ENOMEM

public static final int ENOMEM

See Also:

Constant Field Values

EACCES

public static final int EACCES

See Also:

Constant Field Values

EFAULT

public static final int EFAULT

See Also:

Constant Field Values

ENOTBLK

public static final int ENOTBLK

See Also:

Constant Field Values

EBUSY

public static final int EBUSY

See Also:

Constant Field Values

EEXIST

public static final int EEXIST

See Also:

Constant Field Values

EXDEV

public static final int EXDEV

See Also:

Constant Field Values

ENODEV

public static final int ENODEV

See Also:

Constant Field Values

ENOTDIR

public static final int ENOTDIR

See Also:

Constant Field Values

EISDIR

public static final int EISDIR

See Also:

Constant Field Values

EINVAL

public static final int EINVAL

See Also:

Constant Field Values

ENFILE

public static final int ENFILE

See Also:

Constant Field Values

EMFILE

public static final int EMFILE

See Also:

Constant Field Values

ENOTTY

public static final int ENOTTY

See Also:

Constant Field Values

ETXTBSY

public static final int ETXTBSY

See Also:

Constant Field Values

EFBIG

public static final int EFBIG

See Also:

Constant Field Values

ENOSPC

public static final int ENOSPC

See Also:

Constant Field Values

ESPIPE

public static final int ESPIPE

See Also:

Constant Field Values

EROFS

public static final int EROFS

See Also:

Constant Field Values

EMLINK

public static final int EMLINK

See Also:

Constant Field Values

EPIPE

public static final int EPIPE

See Also:

Constant Field Values

EDOM

public static final int EDOM

See Also:

Constant Field Values

ERANGE

public static final int ERANGE

See Also:

Constant Field Values

ENOMSG

public static final int ENOMSG

See Also:

Constant Field Values

EIDRM

public static final int EIDRM

See Also:

Constant Field Values

ECHRNG

public static final int ECHRNG

See Also:

Constant Field Values

ELNRNG

public static final int ELNRNG

See Also:

Constant Field Values

EUNATCH

public static final int EUNATCH

See Also:

Constant Field Values

ENOCSI

public static final int ENOCSI

See Also:

Constant Field Values

EDEADLK

public static final int EDEADLK

See Also:

Constant Field Values

ENOLCK

public static final int ENOLCK

See Also:

Constant Field Values

EBADE

public static final int EBADE

See Also:

Constant Field Values

EBADR

public static final int EBADR

See Also:

Constant Field Values

EXFULL

public static final int EXFULL

See Also:

Constant Field Values

ENOANO

public static final int ENOANO

See Also:

Constant Field Values

EBADRQC

public static final int EBADRQC

See Also:

Constant Field Values

EBADSLT

public static final int EBADSLT

See Also:

Constant Field Values

EDEADLOCK

public static final int EDEADLOCK

See Also:

Constant Field Values

EBFONT

public static final int EBFONT

See Also:

Constant Field Values

ENOSTR

public static final int ENOSTR

See Also:

Constant Field Values

ENODATA

public static final int ENODATA

See Also:

Constant Field Values

ETIME

public static final int ETIME

See Also:

Constant Field Values

ENOSR

public static final int ENOSR

See Also:

Constant Field Values

ENONET

public static final int ENONET

See Also:

Constant Field Values

ENOPKG

public static final int ENOPKG

See Also:

Constant Field Values

EREMOTE

public static final int EREMOTE

See Also:

Constant Field Values

ENOLINK

public static final int ENOLINK

See Also:

Constant Field Values

EADV

public static final int EADV

See Also:

Constant Field Values

ESRMNT

public static final int ESRMNT

See Also:

Constant Field Values

ECOMM

public static final int ECOMM

See Also:

Constant Field Values

EPROTO

public static final int EPROTO

See Also:

Constant Field Values

EMULTIHOP

public static final int EMULTIHOP

See Also:

Constant Field Values

ELBIN

public static final int ELBIN

See Also:

Constant Field Values

EDOTDOT

public static final int EDOTDOT

See Also:

Constant Field Values

EBADMSG

public static final int EBADMSG

See Also:

Constant Field Values

EFTYPE

public static final int EFTYPE

See Also:

Constant Field Values

ENOTUNIQ

public static final int ENOTUNIQ

See Also:

Constant Field Values

EBADFD

public static final int EBADFD

See Also:

Constant Field Values

EREMCHG

public static final int EREMCHG

See Also:

Constant Field Values

ELIBACC

public static final int ELIBACC

See Also:

Constant Field Values

ELIBBAD

public static final int ELIBBAD

See Also:

Constant Field Values

ELIBSCN

public static final int ELIBSCN

See Also:

Constant Field Values

ELIBMAX

public static final int ELIBMAX

See Also:

Constant Field Values

ELIBEXEC

public static final int ELIBEXEC

See Also:

Constant Field Values

ENOSYS

public static final int ENOSYS

See Also:

Constant Field Values

ENMFILE

public static final int ENMFILE

See Also:

Constant Field Values

ENOTEMPTY

public static final int ENOTEMPTY

See Also:

Constant Field Values

ENAMETOOLONG

public static final int ENAMETOOLONG

See Also:

Constant Field Values

ELOOP

public static final int ELOOP

See Also:

Constant Field Values

EOPNOTSUPP

public static final int EOPNOTSUPP

See Also:

Constant Field Values

EPFNOSUPPORT

public static final int EPFNOSUPPORT

See Also:

Constant Field Values

ECONNRESET

public static final int ECONNRESET

See Also:

Constant Field Values

ENOBUFS

public static final int ENOBUFS

See Also:

Constant Field Values

EAFNOSUPPORT

public static final int EAFNOSUPPORT

See Also:

Constant Field Values

EPROTOTYPE

public static final int EPROTOTYPE

See Also:

Constant Field Values

ENOTSOCK

public static final int ENOTSOCK

See Also:

Constant Field Values

ENOPROTOOPT

public static final int ENOPROTOOPT

See Also:

Constant Field Values

ESHUTDOWN

public static final int ESHUTDOWN

See Also:

Constant Field Values

ECONNREFUSED

public static final int ECONNREFUSED

See Also:

Constant Field Values

EADDRINUSE

public static final int EADDRINUSE

See Also:

Constant Field Values

ECONNABORTED

public static final int ECONNABORTED

See Also:

Constant Field Values

ENETUNREACH

public static final int ENETUNREACH

See Also:

Constant Field Values

ENETDOWN

public static final int ENETDOWN

See Also:

Constant Field Values

ETIMEDOUT

public static final int ETIMEDOUT

See Also:

Constant Field Values

EHOSTDOWN

public static final int EHOSTDOWN

See Also:

Constant Field Values

EHOSTUNREACH

public static final int EHOSTUNREACH

See Also:

Constant Field Values

EINPROGRESS

public static final int EINPROGRESS

See Also:

Constant Field Values

EALREADY

public static final int EALREADY

See Also:

Constant Field Values

EDESTADDRREQ

public static final int EDESTADDRREQ

See Also:

Constant Field Values

EMSGSIZE

public static final int EMSGSIZE

See Also:

Constant Field Values

EPROTONOSUPPORT

public static final int EPROTONOSUPPORT

See Also:

Constant Field Values

ESOCKTNOSUPPORT

public static final int ESOCKTNOSUPPORT

See Also:

Constant Field Values

EADDRNOTAVAIL

public static final int EADDRNOTAVAIL

See Also:

Constant Field Values

ENETRESET

public static final int ENETRESET

See Also:

Constant Field Values

EISCONN

public static final int EISCONN

See Also:

Constant Field Values

ENOTCONN

public static final int ENOTCONN

See Also:

Constant Field Values

ETOOMANYREFS

public static final int ETOOMANYREFS

See Also:

Constant Field Values

EPROCLIM

public static final int EPROCLIM

See Also:

Constant Field Values

EUSERS

public static final int EUSERS

See Also:

Constant Field Values

EDQUOT

public static final int EDQUOT

See Also:

Constant Field Values

ESTALE

public static final int ESTALE

See Also:

Constant Field Values

ENOTSUP

public static final int ENOTSUP

See Also:

Constant Field Values

ENOMEDIUM

public static final int ENOMEDIUM

See Also:

Constant Field Values

ENOSHARE

public static final int ENOSHARE

See Also:

Constant Field Values

ECASECLASH

public static final int ECASECLASH

See Also:

Constant Field Values

EILSEQ

public static final int EILSEQ

See Also:

Constant Field Values

EOVERFLOW

public static final int EOVERFLOW

See Also:

Constant Field Values

__ELASTERROR

public static final int __ELASTERROR

See Also:

Constant Field Values

Constructor Detail

VM

public VM()

Method Detail

getState

public final int getState()

execute

public abstract void execute()
                      throws VM.EmulationException

Throws:

VM.EmulationException

_start

protected abstract void _start(int pc)

copyin

public void copyin(int addr,
                   byte[] a,
                   int length)
            throws VM.ReadFaultException

Throws:

VM.ReadFaultException

copyout

public void copyout(byte[] a,
                    int addr,
                    int length)
             throws VM.FaultException

Throws:

VM.FaultException

memRead

public final int memRead(int addr)
                  throws VM.ReadFaultException

Throws:

VM.ReadFaultException

memWrite

protected final void memWrite(int addr,
                              int value)
                       throws VM.WriteFaultException

Throws:

VM.WriteFaultException

initPage

protected void initPage(int page)

exitStatus

public final int exitStatus()

run

public final int run(java.lang.String[] args)
              throws VM.EmulationException

Throws:

VM.EmulationException

setUserInfo

public void setUserInfo(int index,
                        int word)
                 throws VM.EmulationException

Throws:

VM.EmulationException

getUserInfo

public int getUserInfo(int index)
                throws VM.EmulationException

Throws:

VM.EmulationException

start

public final void start(java.lang.String[] args)
                 throws VM.EmulationException

Throws:

VM.EmulationException

sbrk

public int sbrk(int incr)

syscall

protected int syscall(int syscall,
                      int a,
                      int b,
                      int c,
                      int d)

cstring

public java.lang.String cstring(int addr)
                         throws VM.ReadFaultException

Throws:

VM.ReadFaultException

toHex

protected static final java.lang.String toHex(int n)

min

protected static final int min(int a,
                               int b)

max

protected static final int max(int a,
                               int b)