jdk.internal.jvmci.code

Class CallingConvention

java.lang.Object

jdk.internal.jvmci.code.CallingConvention

public class CallingConvention
extends Object

A calling convention describes the locations in which the arguments for a call are placed and the location in which the return value is placed if the call is not void.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	CallingConvention.Type Constants denoting the type of a call for which a calling convention is requested.

Field Summary

Fields

Modifier and Type	Field and Description
private AllocatableValue[]	argumentLocations The ordered locations in which the arguments are placed.
private AllocatableValue	returnLocation
private int	stackSize The amount of stack space (in bytes) required for the stack-based arguments of the call.

Constructor Summary

Constructors

Constructor and Description
CallingConvention(int stackSize, AllocatableValue returnLocation, AllocatableValue... argumentLocations) Creates a description of the registers and stack locations used by a call.

Method Summary

Modifier and Type	Method and Description
AllocatableValue	getArgument(int index) Gets the location for the index'th argument.
int	getArgumentCount() Gets the number of locations required for the arguments.
AllocatableValue[]	getArguments() Gets the locations required for the arguments.
AllocatableValue	getReturn() Gets the location for the return value or Value.ILLEGAL if a void call.
int	getStackSize() Gets the amount of stack space (in bytes) required for the stack-based arguments of the call.
String	toString()
private boolean	verify()

Methods inherited from class java.lang.Object

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

Field Detail

stackSize

private final int stackSize

The amount of stack space (in bytes) required for the stack-based arguments of the call.

returnLocation

private final AllocatableValue returnLocation

argumentLocations

private final AllocatableValue[] argumentLocations

The ordered locations in which the arguments are placed.

Constructor Detail

CallingConvention

public CallingConvention(int stackSize,
                         AllocatableValue returnLocation,
                         AllocatableValue... argumentLocations)

Creates a description of the registers and stack locations used by a call.

Parameters:

stackSize - amount of stack space (in bytes) required for the stack-based arguments of the call

returnLocation - the location for the return value or Value.ILLEGAL if a void call

argumentLocations - the ordered locations in which the arguments are placed

Method Detail

getReturn

public AllocatableValue getReturn()

Gets the location for the return value or Value.ILLEGAL if a void call.

getArgument

public AllocatableValue getArgument(int index)

Gets the location for the index'th argument.

getStackSize

public int getStackSize()

Gets the amount of stack space (in bytes) required for the stack-based arguments of the call.

getArgumentCount

public int getArgumentCount()

Gets the number of locations required for the arguments.

getArguments

public AllocatableValue[] getArguments()

Gets the locations required for the arguments.

toString

public String toString()

Overrides:

toString in class Object

verify

private boolean verify()