org.jikesrvm.compilers.common

Class ExceptionTable

java.lang.Object

org.jikesrvm.compilers.common.ExceptionTable

Direct Known Subclasses:

BaselineExceptionTable, OptExceptionTable

public abstract class ExceptionTable
extends Object

Encoding of try ranges in the final machinecode and the corresponding exception type and catch block start.

Field Summary

Fields

Modifier and Type	Field and Description
protected static int	CATCH_START
protected static int	EX_TYPE
protected static int	TRY_END
protected static int	TRY_START An eTable array encodes the exception tables using 4 ints for each

Constructor Summary

Constructors

Constructor and Description
ExceptionTable()

Method Summary

Modifier and Type	Method and Description
static int	findCatchBlockForInstruction(int[] eTable, Offset instructionOffset, RVMType exceptionType) Return the machine code offset for the catch block that will handle the argument exceptionType,or -1 if no such catch block exists.
static void	printExceptionTable(int[] eTable) Print an encoded exception table.
static void	printExceptionTableUninterruptible(int[] eTable) Prints an exception table.
private static void	printLessNicelyFormattedAndUninterruptible(int[] eTable, int i)
private static void	printNicelyFormattedAndInterruptible(int[] eTable, int i)
private static void	writeExceptionTableHeader()

Methods inherited from class java.lang.Object

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

Field Detail

TRY_START

protected static final int TRY_START

An eTable array encodes the exception tables using 4 ints for each

See Also:

Constant Field Values

TRY_END

protected static final int TRY_END

See Also:

Constant Field Values

CATCH_START

protected static final int CATCH_START

See Also:

Constant Field Values

EX_TYPE

protected static final int EX_TYPE

See Also:

Constant Field Values

Constructor Detail

ExceptionTable

public ExceptionTable()

Method Detail

findCatchBlockForInstruction

public static int findCatchBlockForInstruction(int[] eTable,
                                               Offset instructionOffset,
                                               RVMType exceptionType)

Return the machine code offset for the catch block that will handle the argument exceptionType,or -1 if no such catch block exists.

Parameters:

eTable - the encoded exception table to search

instructionOffset - the offset of the instruction after the PEI.

exceptionType - the type of exception that was raised

Returns:

the machine code offset of the catch block.

printExceptionTable

public static void printExceptionTable(int[] eTable)

Print an encoded exception table.

Parameters:

eTable - the encoded exception table to print.

writeExceptionTableHeader

private static void writeExceptionTableHeader()

printNicelyFormattedAndInterruptible

private static void printNicelyFormattedAndInterruptible(int[] eTable,
                                                         int i)

printExceptionTableUninterruptible

public static void printExceptionTableUninterruptible(int[] eTable)

Prints an exception table.

This method does the same thing as printExceptionTable(int[]) but with less nicely formatted output because of the constraints imposed by the requirements for uninterruptible code.

Parameters:

eTable - the exception table to print

printLessNicelyFormattedAndUninterruptible

private static void printLessNicelyFormattedAndUninterruptible(int[] eTable,
                                                               int i)