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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
*/
#include "gpu-compute/condition_register_state.hh"
#include "gpu-compute/compute_unit.hh"
#include "gpu-compute/gpu_static_inst.hh"
#include "gpu-compute/shader.hh"
#include "gpu-compute/wavefront.hh"
ConditionRegisterState::ConditionRegisterState()
{
computeUnit = nullptr;
c_reg.clear();
busy.clear();
}
void
ConditionRegisterState::setParent(ComputeUnit *_computeUnit)
{
computeUnit = _computeUnit;
_name = computeUnit->name() + ".CondRegState";
}
void
ConditionRegisterState::init(uint32_t _size)
{
c_reg.resize(_size);
busy.resize(_size, 0);
}
void
ConditionRegisterState::exec(GPUDynInstPtr ii, Wavefront *w)
{
// iterate over all operands
for (auto i = 0; i < ii->getNumOperands(); ++i) {
// is this a condition register destination operand?
if (ii->isCondRegister(i) && ii->isDstOperand(i)) {
// mark the register as busy
markReg(ii->getRegisterIndex(i, ii), 1);
uint32_t pipeLen = w->computeUnit->spBypassLength();
// schedule an event for marking the register as ready
w->computeUnit->
registerEvent(w->simdId, ii->getRegisterIndex(i, ii),
ii->getOperandSize(i),
w->computeUnit->shader->tick_cnt +
w->computeUnit->shader->ticks(pipeLen), 0);
}
}
}
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