kanga.translate
Class MContext

java.lang.Object
  kanga.translate.MContext

public class MContext
extends java.lang.Object

This class represents a context of a procedure's body. It encapsulates the three numbers relevant in generating preamble code for a MIPS procedure. Moreover, it encapsulates a string buffer where the procedure's code is generated via the various attach*() methods available.

Author:

Santoso Wijaya

Field Summary

int	args The number of arguments of this procedure context.
int	callArgs The maximum number of arguments in a call.
int	stack The number of stack slots needed by this procedure context.

Constructor Summary

MContext(int args, int stack, int callArgs)
Creates a context with the given number of arguments, stack slots, and maximum number of arguments in a call.

Method Summary

void	attachBranchNotEqual(java.lang.String reg0, java.lang.String reg1, java.lang.String label)
void	attachCustom(java.lang.String line)
void	attachJump(java.lang.String label)
void	attachJumpReturn(java.lang.String addr)
void	attachLabel(java.lang.String label)
void	attachLoadAddress(java.lang.String dest, java.lang.String src)
void	attachLoadImmediate(java.lang.String dest, java.lang.String value)
void	attachLoadWord(java.lang.String reg, java.lang.String src)
void	attachLoadWord(java.lang.String reg, java.lang.String offset, java.lang.String src)
void	attachMove(java.lang.String dest, java.lang.String src)
void	attachRType(java.lang.String op, java.lang.String dest, java.lang.String reg0, java.lang.String reg1)
void	attachStoreWord(java.lang.String reg, java.lang.String stack)
void	attachStoreWord(java.lang.String reg, java.lang.String offset, java.lang.String addr)
void	attachSysCall(int routine)
java.lang.String	getCode() Returns the code string that has been accumulated.

Methods inherited from class java.lang.Object

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

Field Detail

args

public int args

The number of arguments of this procedure context.

stack

public int stack

The number of stack slots needed by this procedure context.

callArgs

public int callArgs

The maximum number of arguments in a call.

Constructor Detail

MContext

public MContext(int args,
                int stack,
                int callArgs)

Creates a context with the given number of arguments, stack slots, and maximum number of arguments in a call.

Parameters:

args - the number of arguments

stack - the number of stack slots needed

callArgs - the maximum number of arguments in a

Method Detail

getCode

public java.lang.String getCode()

Returns the code string that has been accumulated.

Returns:

the code string

attachMove

public void attachMove(java.lang.String dest,
                       java.lang.String src)

attachLoadWord

public void attachLoadWord(java.lang.String reg,
                           java.lang.String src)

attachLoadWord

public void attachLoadWord(java.lang.String reg,
                           java.lang.String offset,
                           java.lang.String src)

attachLoadAddress

public void attachLoadAddress(java.lang.String dest,
                              java.lang.String src)

attachLoadImmediate

public void attachLoadImmediate(java.lang.String dest,
                                java.lang.String value)

attachStoreWord

public void attachStoreWord(java.lang.String reg,
                            java.lang.String stack)

attachStoreWord

public void attachStoreWord(java.lang.String reg,
                            java.lang.String offset,
                            java.lang.String addr)

attachSysCall

public void attachSysCall(int routine)

attachLabel

public void attachLabel(java.lang.String label)

attachJump

public void attachJump(java.lang.String label)

attachJumpReturn

public void attachJumpReturn(java.lang.String addr)

attachBranchNotEqual

public void attachBranchNotEqual(java.lang.String reg0,
                                 java.lang.String reg1,
                                 java.lang.String label)

attachRType

public void attachRType(java.lang.String op,
                        java.lang.String dest,
                        java.lang.String reg0,
                        java.lang.String reg1)

attachCustom

public void attachCustom(java.lang.String line)