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Update ExecutionStage.java #5

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Merged
mk319 merged 1 commit into from
Nov 28, 2014
Merged

Update ExecutionStage.java #5

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25 changes: 25 additions & 0 deletions src/stages/ExecutionStage.java
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Original file line number Diff line number Diff line change
Expand Up @@ -4,6 +4,7 @@

import buffers.DecodeExecuteBuffer;
import buffers.ExecuteMemoryBuffer;
import components.ALU;

public class ExecutionStage implements Callable<ExecuteMemoryBuffer>
{
Expand All @@ -23,8 +24,32 @@ public ExecuteMemoryBuffer call() throws Exception
//TODO: Implement ExecutionStage
ExecuteMemoryBuffer outBuffer = ExecuteMemoryBuffer.getInstance();

//PC: Need to do offset
int incrementedPc = decodeExecuteBuffer.readIncrementedPc();

int signExtended = decodeExecuteBuffer.readSignExtendedBytes();
incrementedPc = incrementedPc + (signExtended >> 2);

outBuffer.writeIncrementedPcWithOffwrite(incrementedPc);
//ALU Control


//Call ALU: need to figure out how to ALUop1 and ALUop2
if(decodeExecuteBuffer.readAluSrc()){
outBuffer.writeAluResult(ALU.performALU( ,decodeExecuteBuffer.readRegReadValue1(), decodeExecuteBuffer.readSignExtendedBytes));
}
else{
outBuffer.writeAluResult(ALU.performALU(, decodeExecuteBuffer.readRegReadValue1(), decodeExecuteBuffer.readRegReadValue1());
}

//Rt or Rd
if(decodeExecuteBuffer.readRegDst()){
outBuffer.writeDestinationRegisterAddress(decodeExecuteBuffer.readRd());
}
else{
outBuffer.writeDestinationRegisterAddress(decodeExecuteBuffer.readRt());

}
running = false;
return outBuffer;
}
Expand Down