scale.backend.ppc
Class PPCRegisterSet

java.lang.Object
  scale.backend.RegisterSet
      scale.backend.ppc.PPCRegisterSet

Direct Known Subclasses:

PPCG4RegisterSet, PPCG5RegisterSet

public abstract class PPCRegisterSet
extends RegisterSet

This class describes the register set of the PowerPC.

$Id: PPCRegisterSet.java,v 1.8 2005-02-07 21:27:32 burrill Exp $

Copyright 2005 by the Scale Compiler Group,
Department of Computer Science
University of Massachusetts,
Amherst MA. 01003, USA
All Rights Reserved.

The PPC has 64 programmable registers. The first 32 registers are used for integer values and addresses. This includes the stack pointer and other housekeeping registers. Registers 32 through 63 are used for floating point values.

Field Summary

static int	FFA_REG First floating point argument register.
static int	FIA_REG First integer argument register.
static int	FR_REG Floating point function value return register.
static int	IR_REG Integer function value return register.
static int	LFA_REG_LINUX Last floating point argument register for Linux.
static int	LFA_REG_MACOSX Last floating point argumenmt register for MACOSX.
static int	LIA_REG Last integer argument register.
static int	SP_REG Stack pointer register.
static int	TOC_REG Table of contents register.

Fields inherited from class scale.backend.RegisterSet

ADRREG, AFIREG, AIREG, checkMask, CNTREG, DBLEREG, FIREG, FLTREG, INTREG, nextRegister, PAIRREG, QUADREG, RDREG, registers, sizeMask, SPCREG, typeMask

Constructor Summary

PPCRegisterSet(short[] actualRegisters)

Method Summary

int	numAllocatableRegisters() Return the number of unique registers that can hold programmer values.
int	registerSize(int reg) Return the size of the register in bytes.

Methods inherited from class scale.backend.RegisterSet

actualRegister, adrRegister, compatible, compatibleNS, continueRegister, display, doubleRegister, floatRegister, getCalleeSaves, getCalleeUses, getPreferredOrder, getResultRegister, getType, initialize, intRegister, isAdrType, isContinueType, isDoubleType, isFloatType, isIntType, isModType, isPairType, isQuadType, isReadOnlyType, isSpecialType, lastRegister, modRegister, newTempRegister, numContiguousRegisters, numContiguousType, numRealRegisters, numRegisters, pairRegister, quadRegister, rangeBegin, rangeEnd, readOnlyRegister, registerName, setResultRegister, specialRegister, tempRegister, tempRegisterType, tempRegisterType, useContiguous, virtualRegister

Methods inherited from class java.lang.Object

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

Field Detail

SP_REG

public static final int SP_REG

Stack pointer register.

See Also:

Constant Field Values

TOC_REG

public static final int TOC_REG

Table of contents register.

See Also:

Constant Field Values

FIA_REG

public static final int FIA_REG

First integer argument register.

See Also:

Constant Field Values

LIA_REG

public static final int LIA_REG

Last integer argument register.

See Also:

Constant Field Values

FFA_REG

public static final int FFA_REG

First floating point argument register.

See Also:

Constant Field Values

LFA_REG_MACOSX

public static final int LFA_REG_MACOSX

Last floating point argumenmt register for MACOSX.

See Also:

Constant Field Values

LFA_REG_LINUX

public static final int LFA_REG_LINUX

Last floating point argument register for Linux.

See Also:

Constant Field Values

IR_REG

public static final int IR_REG

Integer function value return register.

See Also:

Constant Field Values

FR_REG

public static final int FR_REG

Floating point function value return register.

See Also:

Constant Field Values

Constructor Detail

PPCRegisterSet

public PPCRegisterSet(short[] actualRegisters)

Method Detail

registerSize

public int registerSize(int reg)

Return the size of the register in bytes.

Specified by:

registerSize in class RegisterSet

numAllocatableRegisters

public int numAllocatableRegisters()

Return the number of unique registers that can hold programmer values.

Specified by:

numAllocatableRegisters in class RegisterSet

Returns:

the number of unique registers that can hold programmer values.