104 lines
2.7 KiB
C++
104 lines
2.7 KiB
C++
#include <iostream>
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#include <stdlib.h>
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#include <unistd.h>
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#include <math.h>
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#include "util.h"
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#include "instr.h"
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#include "core.h"
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using namespace vortex;
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Warp::Warp(Core *core, Word id)
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: id_(id)
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, core_(core)
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, pc_(0x80000000)
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, shadowPc_(0)
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, activeThreads_(0)
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, shadowActiveThreads_(0)
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, shadowIReg_(core_->arch().getNumRegs())
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, VLEN_(1024)
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, spawned_(false)
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, steps_(0)
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, insts_(0)
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, loads_(0)
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, stores_(0) {
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D(3, "Creating a new thread with PC: " << std::hex << pc_);
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/* Build the register file. */
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Word regNum(0);
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for (Word j = 0; j < core_->arch().getNumThreads(); ++j) {
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iRegFile_.push_back(std::vector<Reg<Word>>(0));
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for (Word i = 0; i < core_->arch().getNumRegs(); ++i) {
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iRegFile_[j].push_back(Reg<Word>(id, regNum++));
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}
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bool act = false;
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if (j == 0)
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act = true;
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tmask_.push_back(act);
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shadowTmask_.push_back(act);
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}
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for (Word i = 0; i < (1 << 12); i++) {
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csrs_.push_back(Reg<uint32_t>(id, regNum++));
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}
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/* Set initial register contents. */
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iRegFile_[0][0] = (core_->arch().getNumThreads() << (core_->arch().getWordSize() * 8 / 2)) | id;
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}
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void Warp::step(trace_inst_t *trace_inst) {
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Size fetchPos(0);
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Size decPos;
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Size wordSize(core_->arch().getWordSize());
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std::vector<Byte> fetchBuffer(wordSize);
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if (activeThreads_ == 0)
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return;
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++steps_;
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D(3, "current PC=0x" << std::hex << pc_);
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// std::cout << "pc: " << std::hex << pc << "\n";
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trace_inst->pc = pc_;
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/* Fetch and decode. */
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if (wordSize < sizeof(pc_))
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pc_ &= ((1ll << (wordSize * 8)) - 1);
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unsigned fetchSize = 4;
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fetchBuffer.resize(fetchSize);
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Word fetched = core_->mem().fetch(pc_ + fetchPos, 0);
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writeWord(fetchBuffer, fetchPos, fetchSize, fetched);
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decPos = 0;
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std::shared_ptr<Instr> instr = core_->decoder().decode(fetchBuffer, decPos, trace_inst);
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// Update pc
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pc_ += decPos;
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// Execute
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this->execute(*instr, trace_inst);
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// At Debug Level 3, print debug info after each instruction.
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D(3, "Register state:");
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for (unsigned i = 0; i < iRegFile_[0].size(); ++i) {
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D_RAW(" %r" << std::setfill('0') << std::setw(2) << std::dec << i << ':');
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for (unsigned j = 0; j < (activeThreads_); ++j)
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D_RAW(' ' << std::setfill('0') << std::setw(8) << std::hex << iRegFile_[j][i] << std::setfill(' ') << ' ');
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D_RAW('(' << shadowIReg_[i] << ')' << std::endl);
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}
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DPH(3, "Thread mask:");
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for (unsigned i = 0; i < tmask_.size(); ++i)
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DPN(3, " " << tmask_[i]);
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DPN(3, "\n");
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}
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void Warp::printStats() const {
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std::cout << "Steps : " << steps_ << std::endl
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<< "Insts : " << insts_ << std::endl
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<< "Loads : " << loads_ << std::endl
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<< "Stores: " << stores_ << std::endl;
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} |