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/*
* Copyright (c) 2015-2017 Advanced Micro Devices, Inc.
* All rights reserved.
*
* For use for simulation and test purposes only
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* 3. Neither the name of the copyright holder nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef __GPU_COMPUTE_SCALAR_REGISTER_FILE_HH__
#define __GPU_COMPUTE_SCALAR_REGISTER_FILE_HH__
#include "arch/gpu_isa.hh"
#include "base/statistics.hh"
#include "base/trace.hh"
#include "base/types.hh"
#include "debug/GPUSRF.hh"
#include "gpu-compute/register_file.hh"
#include "gpu-compute/wavefront.hh"
namespace gem5
{
struct ScalarRegisterFileParams;
// Scalar Register File
class ScalarRegisterFile : public RegisterFile
{
public:
using ScalarRegU32 = TheGpuISA::ScalarRegU32;
ScalarRegisterFile(const ScalarRegisterFileParams &p);
~ScalarRegisterFile() { }
virtual bool operandsReady(Wavefront *w, GPUDynInstPtr ii) const override;
virtual void scheduleWriteOperands(Wavefront *w,
GPUDynInstPtr ii) override;
virtual void scheduleWriteOperandsFromLoad(Wavefront *w,
GPUDynInstPtr ii) override;
virtual void waveExecuteInst(Wavefront *w, GPUDynInstPtr ii) override;
void
setParent(ComputeUnit *_computeUnit) override
{
RegisterFile::setParent(_computeUnit);
}
// Read a register that is writeable (e.g., a DST operand)
ScalarRegU32&
readWriteable(int regIdx)
{
return regFile[regIdx];
}
// Read a register that is not writeable (e.g., src operand)
ScalarRegU32
read(int regIdx) const
{
return regFile[regIdx];
}
// Write a register
void
write(int regIdx, ScalarRegU32 value)
{
regFile[regIdx] = value;
}
void
printReg(Wavefront *wf, int regIdx) const
{
DPRINTF(GPUSRF, "WF[%d][%d]: Id%d s[%d] = %#x\n", wf->simdId,
wf->wfSlotId, wf->wfDynId, regIdx, regFile[regIdx]);
}
private:
std::vector<ScalarRegU32> regFile;
};
} // namespace gem5
#endif // __GPU_COMPUTE_SCALAR_REGISTER_FILE_HH__