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/*
* Copyright (c) 2015 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.
*
* Author: John Kalamatianos
*/
#ifndef __CONDITION_REGISTER_STATE_HH__
#define __CONDITION_REGISTER_STATE_HH__
#include <string>
#include <vector>
#include "gpu-compute/misc.hh"
class ComputeUnit;
class GPUStaticInst;
class Shader;
class Wavefront;
// Condition Register State (used only when executing HSAIL)
class ConditionRegisterState
{
public:
ConditionRegisterState();
void init(uint32_t _size);
const std::string name() const { return _name; }
void setParent(ComputeUnit *_computeUnit);
void regStats() { }
template<typename T>
T
read(int regIdx, int threadId)
{
bool tmp = c_reg[regIdx][threadId];
T *p0 = (T*)(&tmp);
return *p0;
}
template<typename T>
void
write(int regIdx, int threadId, T value)
{
c_reg[regIdx][threadId] = (bool)(value & 0x01);
}
void
markReg(int regIdx, uint8_t value)
{
busy.at(regIdx) = value;
}
uint8_t
regBusy(int idx)
{
uint8_t status = busy.at(idx);
return status;
}
int numRegs() { return c_reg.size(); }
void exec(GPUStaticInst *ii, Wavefront *w);
private:
ComputeUnit* computeUnit;
std::string _name;
// Condition Register state
std::vector<VectorMask> c_reg;
// flag indicating if a register is busy
std::vector<uint8_t> busy;
};
#endif
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