com.oracle.graal.lir.sparc

Class SPARCLoadConstantTableBaseOp

java.lang.Object

com.oracle.graal.lir.LIRInstruction

com.oracle.graal.lir.sparc.SPARCLIRInstruction

com.oracle.graal.lir.sparc.SPARCLoadConstantTableBaseOp

public class SPARCLoadConstantTableBaseOp
extends SPARCLIRInstruction

Loads the constant section base into a register.

Layout:

 +----constant section----+--pad--+---code section--+
 |<-------------------_------------------->|
                      ^- Constant section base pointer
 

The constant section base pointer is placed as such that the lowest offset -4096 points to the start of the constant section.

If the constant section grows beyond 8k size, the immediate addressing cannot be used anymore; in this case absolute addressing (without using the base pointer is used). See also: CodeInstaller::pd_patch_DataSectionReference

See Also:

SPARCMove.loadFromConstantTable(CompilationResultBuilder, SPARCMacroAssembler, Kind, Register, Register, SPARCDelayedControlTransfer, Runnable)

Nested Class Summary

Nested classes/interfaces inherited from class com.oracle.graal.lir.sparc.SPARCLIRInstruction

SPARCLIRInstruction.SizeEstimate

Nested classes/interfaces inherited from class com.oracle.graal.lir.LIRInstruction

LIRInstruction.Alive, LIRInstruction.Def, LIRInstruction.OperandFlag, LIRInstruction.OperandMode, LIRInstruction.State, LIRInstruction.Temp, LIRInstruction.Use

Field Summary

Fields

Modifier and Type	Field and Description
private AllocatableValue	base
private StandardOp.NoOp	placeHolder
static SPARCLIRInstruction.SizeEstimate	SIZE
static LIRInstructionClass<SPARCLoadConstantTableBaseOp>	TYPE

Fields inherited from class com.oracle.graal.lir.sparc.SPARCLIRInstruction

delayedControlTransfer

Fields inherited from class com.oracle.graal.lir.LIRInstruction

ADDRESS_FLAGS, ALLOWED_FLAGS

Constructor Summary

Constructors

Constructor and Description
SPARCLoadConstantTableBaseOp(Variable base, StandardOp.NoOp placeHolder)

Method Summary

Modifier and Type	Method and Description
void	emitCode(CompilationResultBuilder crb, SPARCMacroAssembler masm)
AllocatableValue	getResult()
void	setAlive(LIR lir, boolean alive)

Methods inherited from class com.oracle.graal.lir.sparc.SPARCLIRInstruction

emitCode, estimateSize, leavesRegisterWindow, setDelayedControlTransfer

Methods inherited from class com.oracle.graal.lir.LIRInstruction

destroysCallerSavedRegisters, forEachAlive, forEachAlive, forEachInput, forEachInput, forEachOutput, forEachOutput, forEachRegisterHint, forEachRegisterHint, forEachState, forEachState, forEachState, forEachState, forEachTemp, forEachTemp, getLIRInstructionClass, hasOperands, hasState, id, name, setId, toString, toStringWithIdPrefix, verify, visitEachAlive, visitEachAlive, visitEachInput, visitEachInput, visitEachOutput, visitEachOutput, visitEachState, visitEachState, visitEachTemp, visitEachTemp

Methods inherited from class java.lang.Object

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

Field Detail

TYPE

public static final LIRInstructionClass<SPARCLoadConstantTableBaseOp> TYPE

SIZE

public static final SPARCLIRInstruction.SizeEstimate SIZE

placeHolder

private final StandardOp.NoOp placeHolder

base

private AllocatableValue base

Constructor Detail

SPARCLoadConstantTableBaseOp

public SPARCLoadConstantTableBaseOp(Variable base,
                                    StandardOp.NoOp placeHolder)

Method Detail

emitCode

public void emitCode(CompilationResultBuilder crb,
                     SPARCMacroAssembler masm)

Specified by:

emitCode in class SPARCLIRInstruction

getResult

public AllocatableValue getResult()

setAlive

public void setAlive(LIR lir,
                     boolean alive)