scale.backend.sparc
Class SparcRegisterSet

java.lang.Object
  scale.backend.RegisterSet
      scale.backend.sparc.SparcRegisterSet

Direct Known Subclasses:

SparcV8RegisterSet, SparcV9RegisterSet

public abstract class SparcRegisterSet
extends RegisterSet

This class describes the register set of the Sparc.

$Id: SparcRegisterSet.java,v 1.13 2005-02-07 21:27:39 burrill Exp $

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

The Sparc has 96 programmable registers. The registers 0..31 are used for integer values and addresses. This includes the stack pointer and other housekeeping registers. Registers 0 contains a hardwired 0 value.

Registers 32 through 63 are used for single precision floating point values. Registers 64 through 95 are used for double precision floating point values. Registers 96 through 111 are used for quad precision floating point values. Note that registers [32:63] overlap registers [64:79] and [96:103]. This is handled in register allocation by the rangebegin() and rangeEnd() methods.

Field Summary

static int	D0_REG Floating point double-precision register %d0.
static int	D2_REG Floating point double-precision register %d2.
static int	F0_REG Floating point register %f0.
static int	F1_REG Floating point register %f1.
static int	FP_REG Frame pointer register.
static int	G0_REG Integer global register %g0.
static int	G1_REG Integer global register %g1.
static int	G2_REG Integer global register %g2.
static int	G3_REG Integer global register %g3.
static int	G4_REG Integer global register %g4.
static int	G5_REG Integer global register %g5.
static int	G6_REG Integer global register %g6.
static int	G7_REG Integer global register %g7.
static int	I0_REG Integer global register %i0.
static int	I1_REG Integer global register %i1.
static int	I2_REG Integer global register %i2.
static int	I3_REG Integer global register %i3.
static int	I4_REG Integer global register %i4.
static int	I5_REG Integer global register %i5.
static int	I6_REG Integer global register %i6.
static int	I7_REG Integer global register %i7.
static int	L0_REG Integer global register %l0.
static int	L1_REG Integer global register %l1.
static int	L2_REG Integer global register %l2.
static int	L3_REG Integer global register %l3.
static int	L4_REG Integer global register %l4.
static int	L5_REG Integer global register %l5.
static int	L6_REG Integer global register %l6.
static int	L7_REG Integer global register %l7.
static int	O0_REG Integer global register %o0.
static int	O1_REG Integer global register %o1.
static int	O2_REG Integer global register %o2.
static int	O3_REG Integer global register %o3.
static int	O4_REG Integer global register %o4.
static int	O5_REG Integer global register %o5.
static int	O6_REG Integer global register %o6.
static int	O7_REG Integer global register %o7.
static int	Q0_REG Floating point quad-precision register %q0.
static int	Q2_REG Floating point quad-precision register %q4.
static int	SP_REG Stack pointer 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

SparcRegisterSet(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.
int	tempRegisterType(Type type, long bs) Return the register type with the size information added.

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, useContiguous, virtualRegister

Methods inherited from class java.lang.Object

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

Field Detail

G0_REG

public static final int G0_REG

Integer global register %g0.

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Constant Field Values

G1_REG

public static final int G1_REG

Integer global register %g1.

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G2_REG

public static final int G2_REG

Integer global register %g2.

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G3_REG

public static final int G3_REG

Integer global register %g3.

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G4_REG

public static final int G4_REG

Integer global register %g4.

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G5_REG

public static final int G5_REG

Integer global register %g5.

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G6_REG

public static final int G6_REG

Integer global register %g6.

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G7_REG

public static final int G7_REG

Integer global register %g7.

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O0_REG

public static final int O0_REG

Integer global register %o0.

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O1_REG

public static final int O1_REG

Integer global register %o1.

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O2_REG

public static final int O2_REG

Integer global register %o2.

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O3_REG

public static final int O3_REG

Integer global register %o3.

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O4_REG

public static final int O4_REG

Integer global register %o4.

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O5_REG

public static final int O5_REG

Integer global register %o5.

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O6_REG

public static final int O6_REG

Integer global register %o6.

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O7_REG

public static final int O7_REG

Integer global register %o7.

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L0_REG

public static final int L0_REG

Integer global register %l0.

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L1_REG

public static final int L1_REG

Integer global register %l1.

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L2_REG

public static final int L2_REG

Integer global register %l2.

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L3_REG

public static final int L3_REG

Integer global register %l3.

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L4_REG

public static final int L4_REG

Integer global register %l4.

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L5_REG

public static final int L5_REG

Integer global register %l5.

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L6_REG

public static final int L6_REG

Integer global register %l6.

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L7_REG

public static final int L7_REG

Integer global register %l7.

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I0_REG

public static final int I0_REG

Integer global register %i0.

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I1_REG

public static final int I1_REG

Integer global register %i1.

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I2_REG

public static final int I2_REG

Integer global register %i2.

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I3_REG

public static final int I3_REG

Integer global register %i3.

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I4_REG

public static final int I4_REG

Integer global register %i4.

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I5_REG

public static final int I5_REG

Integer global register %i5.

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I6_REG

public static final int I6_REG

Integer global register %i6.

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I7_REG

public static final int I7_REG

Integer global register %i7.

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F0_REG

public static final int F0_REG

Floating point register %f0.

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F1_REG

public static final int F1_REG

Floating point register %f1.

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FP_REG

public static final int FP_REG

Frame pointer register.

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SP_REG

public static final int SP_REG

Stack pointer register

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D0_REG

public static final int D0_REG

Floating point double-precision register %d0.

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D2_REG

public static final int D2_REG

Floating point double-precision register %d2.

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Q0_REG

public static final int Q0_REG

Floating point quad-precision register %q0.

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Q2_REG

public static final int Q2_REG

Floating point quad-precision register %q4.

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Constructor Detail

SparcRegisterSet

public SparcRegisterSet(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.

tempRegisterType

public int tempRegisterType(Type type,
                            long bs)

Return the register type with the size information added.

Specified by:

tempRegisterType in class RegisterSet

Parameters:

type - is the type required

bs - is the size required