X86Assembler

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scale.backend.x86
Class X86Assembler

java.lang.Object
  scale.backend.Assembler
      scale.backend.x86.X86Assembler

public final class X86Assembler
extends Assembler
extends Assembler

This class generates X86 assembly language from a list of X86 instructions.

$Id: X86Assembler.java,v 1.1 2007-11-01 16:52:29 burrill Exp $

Copyright 2007 by the Scale Compiler Group,
Department of Computer Science
University of Massachusetts,
Amherst MA. 01003, USA
All Rights Reserved.

This class generates the assembly language for this architecture from the instructions for this architecture. Most of the methods below generate a "not implemented error". These must be replaced with code that generates the proper assemblylanguage sequence. The other methods may need to be modified. Use the assembler classes from the other architectures to help you understand how to make changes for your architecture.

See Also:: Assembler, AlphaAssembler, SparcAssembler, PPCAssembler

Field Summary

Fields inherited from class scale.backend.Assembler
`gen, hex, oneItemPerLine, repsAllowedInAL, source`

Constructor Summary
`X86Assembler(Generator gen, java.lang.String source, boolean instructionScheduling)`

Method Summary
`void`	`assembleComment(java.lang.String comment, Emit emit)` Insert the assembler representation of the comment into the output stream.
`long`	`assembleData(Emit emit, SpaceAllocation sa, long location)` Called for each allocation in a named area.
`void`	`assembleDataAreaHeader(Emit emit, int kind)` Generate the assembly directives for each different kind of data area.
`void`	`assembleEpilog(Emit emit)` Called at the very end of generating assembly code.
`void`	`assembleLabel(Label label, Emit emit)` Generate a label in the assembly output.
`void`	`assembleProlog(Emit emit)` Called at the very beginning of generating assembly code.
`java.lang.String`	`assembleRegister(int reg)` Convert a register number into its assembly language form.
`void`	`buildAddress(Emit emit, int baseReg, int indexReg, Displacement disp, int scale)`
`void`	`buildAddress(java.lang.StringBuffer buf, int baseReg, int indexReg, Displacement disp, int scale)`
`protected void`	`genAsciiText(Emit emit, java.lang.String str)` Generate the assembly directive required to generate an ASCII text string.
`protected void`	`genBytes(Emit emit, int numBytes, long data, int reps)` Output an integer data item as a string of bytes.
`protected long`	`genData(Emit emit, int dt, Label lab, int reps, boolean aligned)` Generate the data representation for address of the label.
`protected void`	`genDirective(Emit emit, int dt)` Generate the assembly directive required for the type.
`protected void`	`genZeroFill(Emit emit, long size)` Generate the assembly directive required to generate a zero-filled area.
`protected int`	`getDirectiveSize(int dt)` Return the number of addressable units required for one value of the specified type.
`java.lang.String`	`getLabelString(Label label)` Return the String representing the label.

Methods inherited from class scale.backend.Assembler
`assemble, assembleDataBegin, assembleDataEnd, assembleInstructions, genData, genData, genData, genData, genData, genData, genData, genData, genData, genData, getDisplayString, getName, getSourceLanguage, getSpaceAllocation, isFortran`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

X86Assembler

public X86Assembler(Generator gen,
                    java.lang.String source,
                    boolean instructionScheduling)

Parameters:: gen - is the instruction generator used to generate the instructions.; source - specifies the source program

Method Detail