harpoon.Backend.MIPS
Class CodeGen

java.lang.Object
  harpoon.Backend.Generic.CodeGen
      harpoon.Backend.Generic.MaxMunchCG
          harpoon.Backend.MIPS.CodeGen

public class CodeGen
extends MaxMunchCG

MIPS.CodeGen is a code-generator for the MIPS II architecture.

Version:

$Id: CodeGen.spec,v 1.6 2004/02/08 01:57:34 cananian Exp $

Author:

Emmett Witchel <witchel@mit.edu>

See Also:

"Kane, MIPS Risc Architecture"

Field Summary

Fields inherited from class harpoon.Backend.Generic.MaxMunchCG

first, last

Fields inherited from class harpoon.Backend.Generic.CodeGen

frame

Constructor Summary

CodeGen(Frame frame, boolean is_elf)

Method Summary

List	cgg_genCode(Code code, InstrFactory inf) Generates assembly code from a harpoon.IR.Tree.Code.
Instr	cgg_genData(Data code, InstrFactory inf) Generates assembly code from a harpoon.IR.Tree.Data.
StackInfo	getStackInfo()
Instr	procFixup(HMethod hm, Instr instr, int stackspace, Set usedRegisters) Fixes up the procedure entry and exit code for a list of instrs, once it is known how many registers and how much stack space is used.

Methods inherited from class harpoon.Backend.Generic.MaxMunchCG

_methodPrologue_, cgg_backendEmit, clearDecl, declare, declare, getDerivation, makeTemp

Methods inherited from class harpoon.Backend.Generic.CodeGen

debug, declare, emit, endGroup, genCode, genData, prettyPrint, procFixup, startGroup

Methods inherited from class java.lang.Object

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

Constructor Detail

CodeGen

public CodeGen(Frame frame,
               boolean is_elf)

Method Detail

procFixup

public Instr procFixup(HMethod hm,
                       Instr instr,
                       int stackspace,
                       Set usedRegisters)

Description copied from class: CodeGen

Fixes up the procedure entry and exit code for a list of instrs, once it is known how many registers and how much stack space is used.

Specified by:

procFixup in class CodeGen

getStackInfo

public StackInfo getStackInfo()

cgg_genCode

public final List cgg_genCode(Code code,
                              InstrFactory inf)

Generates assembly code from a harpoon.IR.Tree.Code.
modifies: this
effects: Scans tree to find a tiling of Instruction Patterns, calling auxillary methods and data structures as defined in the .spec file. Generates an associated Derivation object as the second element of the returned List.

Specified by:

cgg_genCode in class CodeGen

Parameters:

tree - Set of abstract Tree instructions that form the body of the procedure being compiled.

Returns:

The head of a list of Instrs

cgg_genData

public final Instr cgg_genData(Data code,
                               InstrFactory inf)

Generates assembly code from a harpoon.IR.Tree.Data.
modifies: this
effects: Scans tree to define a layout of Instructions, calling auxillary methods and data structures as defined in the .Spec file

Specified by:

cgg_genData in class CodeGen

Parameters:

tree - Set of abstract Tree instructions that form the body of the data structure being compiled.