org.jikesrvm.ia32

Class MachineReflection

java.lang.Object

org.jikesrvm.ia32.MachineReflection

public abstract class MachineReflection
extends Object

Machine dependent portion of Reflective method invoker.

Constructor Summary

Constructors

Constructor and Description
MachineReflection()

Method Summary

Modifier and Type	Method and Description
static int	countParameters(RVMMethod method) Determines number/type of registers and parameters required to call specified method.
static void	packageParameters(RVMMethod method, Object thisArg, Object[] otherArgs, WordArray GPRs, double[] FPRs, byte[] FPRmeta, WordArray Parameters) Collects parameters into arrays of registers/spills, as required to call specified method.

Methods inherited from class java.lang.Object

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

Constructor Detail

MachineReflection

public MachineReflection()

Method Detail

countParameters

public static int countParameters(RVMMethod method)

Determines number/type of registers and parameters required to call specified method. Unlike the PowerPC code we count all the parameters, not just the ones that spill. This allow us to make enough space on the stack following the calling convention.

Parameters:

method - the method whose parameters to count

Returns:

number of parameters, gprs and frps encoded in a triple

packageParameters

public static void packageParameters(RVMMethod method,
                                     Object thisArg,
                                     Object[] otherArgs,
                                     WordArray GPRs,
                                     double[] FPRs,
                                     byte[] FPRmeta,
                                     WordArray Parameters)

Collects parameters into arrays of registers/spills, as required to call specified method.

Parameters:

method - method whose parameters are to be packaged

thisArg - the receiver argument

otherArgs - all other arguments (primitives are boxed)

GPRs - space for GPRs (empty array if none needed)

FPRs - space for FPRs (empty array if none needed)

FPRmeta - meta-data for FPRs (null if no SSE2)

Parameters - more space for parameters. Refer to the source code to get all the details.

See Also:

more machine-specific details