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System.cpp
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// Copyright 2020 Western Digital Corporation or its affiliates.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include <iomanip>
#include <iostream>
#include <fstream>
#include <sstream>
#include <boost/algorithm/string.hpp>
#include "Filesystem.hpp"
#include "Hart.hpp"
#include "Core.hpp"
#include "SparseMem.hpp"
#include "System.hpp"
#include "Mcm.hpp"
#include "PerfApi.hpp"
#include "Uart8250.hpp"
#include "Uartsf.hpp"
#include "pci/virtio/Blk.hpp"
using namespace WdRiscv;
inline bool
isPowerOf2(uint64_t x)
{
return x != 0 and (x & (x-1)) == 0;
}
template <typename URV>
System<URV>::System(unsigned coreCount, unsigned hartsPerCore,
unsigned hartIdOffset, size_t memSize,
size_t pageSize)
: hartCount_(coreCount * hartsPerCore), hartsPerCore_(hartsPerCore),
imsicMgr_((coreCount * hartsPerCore), pageSize), time_(0)
{
cores_.resize(coreCount);
memory_ = std::make_unique<Memory>(memSize, pageSize);
syscall_ = std::make_unique<Syscall<URV>>(sysHarts_, memSize);
sparseMem_ = nullptr;
Memory& mem = *memory_;
mem.setHartCount(hartCount_);
for (unsigned ix = 0; ix < coreCount; ++ix)
{
URV coreHartId = ix * hartIdOffset;
cores_.at(ix) = std::make_shared<CoreClass>(coreHartId, ix, hartsPerCore, mem, *syscall_, time_);
// Maintain a vector of all the harts in the system. Map hart-id to index
// of hart in system.
auto core = cores_.at(ix);
for (unsigned i = 0; i < hartsPerCore; ++i)
{
auto hart = core->ithHart(i);
sysHarts_.push_back(hart);
URV hartId = coreHartId + i;
unsigned hartIx = ix*hartsPerCore + i;
hartIdToIndex_[hartId] = hartIx;
}
}
#ifdef MEM_CALLBACKS
sparseMem_ = std::make_unique<SparseMem>();
auto readf = [this](uint64_t addr, unsigned size, uint64_t& value) -> bool {
return sparseMem_->read(addr, size, value); };
auto writef = [this](uint64_t addr, unsigned size, uint64_t value) -> bool {
return sparseMem_->write(addr, size, value); };
auto initf = [this](uint64_t addr, const std::span<uint8_t> buffer) -> bool {
return sparseMem_->initializePage(addr, buffer); };
mem.defineReadMemoryCallback(readf);
mem.defineWriteMemoryCallback(writef);
mem.defineInitPageCallback(initf);
#endif
}
template <typename URV>
bool
System<URV>::defineUart(const std::string& type, uint64_t addr, uint64_t size)
{
std::shared_ptr<IoDevice> dev;
if (type == "uartsf")
dev = std::make_shared<Uartsf>(addr, size);
else if (type == "uart8250")
dev = std::make_shared<Uart8250>(addr, size);
else
{
std::cerr << "System::defineUart: Invalid uadrt type: " << type << "\n";
return false;
}
memory_->registerIoDevice(dev);
ioDevs_.push_back(std::move(dev));
return true;
}
template <typename URV>
System<URV>::~System()
{
// Final MCM checks
if (mcm_)
for (const auto& hartPtr : sysHarts_)
mcm_->finalChecks(*hartPtr);
// Write back binary files were marked for update.
for (auto bf : binaryFiles_)
{
auto path = std::get<0>(bf);
uint64_t addr = std::get<1>(bf);
uint64_t size = std::get<2>(bf);
std::cerr << "Updating " << path << " from addr: 0x" << std::hex << addr
<< std::dec << " size: " << size << '\n';
FILE* file = fopen(path.c_str(), "w");
if (not file)
{
std::cerr << "Failed to open " << path << " for update\n";
continue;
}
for (uint64_t i = 0; i < size; ++i)
{
uint8_t byte = 0;
memory_->peek(addr + i, byte, false);
fputc(byte, file);
}
fclose(file);
}
}
template <typename URV>
void
System<URV>::checkUnmappedElf(bool flag)
{
if (memory_)
memory_->checkUnmappedElf(flag);
}
template <typename URV>
bool
System<URV>::writeAccessedMemory(const std::string& path) const
{
if (not sparseMem_)
return false;
return sparseMem_->writeHexFile(path);
}
template <typename URV>
bool
System<URV>::loadElfFiles(const std::vector<std::string>& files, bool raw, bool verbose)
{
unsigned registerWidth = sizeof(URV)*8;
uint64_t end = 0, entry = 0;
uint64_t gp = 0, tp = 0; // gp: global-pointer, tp: thread-pointer
unsigned errors = 0;
ElfSymbol sym;
for (const auto& file : files)
{
if (verbose)
std::cerr << "Loading ELF file " << file << '\n';
uint64_t end0 = 0, entry0 = 0;
if (not memory_->loadElfFile(file, registerWidth, entry0, end0))
errors++;
else
{
if (not entry)
entry = entry0;
if (memory_->findElfSymbol("_end", sym)) // For newlib/linux emulation.
end = std::max(end, sym.addr_);
else
end = std::max(end, end0);
if (not gp and memory_->findElfSymbol("__global_pointer$", sym))
gp = sym.addr_;
if (not tp and memory_->findElfSection(".tdata", sym))
tp = sym.addr_;
}
}
for (const auto& hart : sysHarts_)
{
if (not toHostSym_.empty() and memory_->findElfSymbol(toHostSym_, sym))
hart->setToHostAddress(sym.addr_);
if (not fromHostSym_.empty() and memory_->findElfSymbol(fromHostSym_, sym))
hart->setFromHostAddress(sym.addr_, true);
if (not consoleIoSym_.empty() and memory_->findElfSymbol(consoleIoSym_, sym))
hart->setConsoleIo(URV(sym.addr_));
if (verbose)
std::cerr << "Setting program break to 0x" << std::hex << end << std::dec << '\n';
hart->setTargetProgramBreak(end);
if (not raw)
{
if (not hart->peekIntReg(RegGp) and gp)
{
if (verbose)
std::cerr << "Setting register gp to 0x" << std::hex << gp << std::dec << '\n';
hart->pokeIntReg(RegGp, URV(gp));
}
if (not hart->peekIntReg(RegTp) and tp)
{
if (verbose)
std::cerr << "Setting register tp to 0x" << std::hex << tp << std::dec << '\n';
hart->pokeIntReg(RegTp, URV(tp));
}
if (entry)
{
if (verbose)
std::cerr << "Setting PC to 0x" << std::hex << entry << std::dec << '\n';
hart->pokePc(URV(entry));
}
}
}
return errors == 0;
}
template <typename URV>
bool
System<URV>::loadHexFiles(const std::vector<std::string>& files, bool verbose)
{
unsigned errors = 0;
for (const auto& file : files)
{
if (verbose)
std::cerr << "Loading HEX file " << file << '\n';
if (not memory_->loadHexFile(file))
errors++;
}
return errors == 0;
}
static bool
binaryFileParams(std::string spec, uint64_t defOffset, std::string& filename, uint64_t &offset, bool &update)
{
using std::cerr;
// Split filespec around colons. Spec format: <file>,
// <file>:<offset>, or <file>:<offset>:u
std::vector<std::string> parts;
boost::split(parts, spec, boost::is_any_of(":"));
filename = parts.at(0);
offset = defOffset;
update = false;
if (parts.empty())
{
std::cerr << "Error: Empty binary file name\n";
return false;
}
filename = parts.at(0);
if (parts.size() > 1)
{
std::string offsStr = parts.at(1);
if (offsStr.empty())
cerr << "Warning: Empty binary file offset: " << spec << '\n';
else
{
char* tail = nullptr;
offset = strtoull(offsStr.c_str(), &tail, 0);
if (tail and *tail)
{
cerr << "Error: Invalid binary file offset: " << spec << '\n';
return false;
}
}
}
else
cerr << "Binary file " << filename << " does not have an address, will use address 0x"
<< std::hex << offset << std::dec << '\n';
if (parts.size() > 2)
{
if (parts.at(2) != "u")
{
cerr << "Error: Invalid binary file attribute: " << spec << '\n';
return false;
}
update = true;
}
return true;
}
template <typename URV>
bool
System<URV>::loadBinaryFiles(const std::vector<std::string>& fileSpecs,
uint64_t defOffset, bool verbose)
{
using std::cerr;
unsigned errors = 0;
for (const auto& spec : fileSpecs)
{
std::string filename;
uint64_t offset;
bool update;
if (!binaryFileParams(spec, defOffset, filename, offset, update))
{
errors++;
continue;
}
if (verbose)
cerr << "Loading binary " << filename << " at address 0x" << std::hex
<< offset << std::dec << '\n';
if (not memory_->loadBinaryFile(filename, offset))
{
errors++;
continue;
}
if (update)
{
uint64_t size = Filesystem::file_size(filename);
BinaryFile bf = { filename, offset, size };
binaryFiles_.push_back(bf);
}
}
return errors == 0;
}
#ifdef LZ4_COMPRESS
template <typename URV>
bool
System<URV>::loadLz4Files(const std::vector<std::string>& fileSpecs,
uint64_t defOffset, bool verbose)
{
using std::cerr;
unsigned errors = 0;
for (const auto& spec : fileSpecs)
{
std::string filename;
uint64_t offset;
bool update;
if (!binaryFileParams(spec, defOffset, filename, offset, update))
{
errors++;
continue;
}
if (update)
{
cerr << "Updating not supported on lz4 files, ignoring " << filename << '\n';
errors++;
continue;
}
if (verbose)
cerr << "Loading lz4 compressed file " << filename << " at address 0x" << std::hex
<< offset << std::dec << '\n';
if (not memory_->loadLz4File(filename, offset))
{
errors++;
continue;
}
if (update)
{
uint64_t size = Filesystem::file_size(filename);
BinaryFile bf = { filename, offset, size };
binaryFiles_.push_back(bf);
}
}
return errors == 0;
}
#endif
static
bool
saveUsedMemBlocks(const std::string& filename,
std::vector<std::pair<uint64_t, uint64_t>>& blocks)
{
std::ofstream ofs(filename, std::ios::trunc);
if (not ofs)
{
std::cerr << "saveUsedMemBlocks failed - cannot open "
<< filename << " for write\n";
return false;
}
for (auto& it: blocks)
ofs << it.first << " " << it.second << "\n";
return true;
}
static
bool
saveTime(const std::string& filename, uint64_t time)
{
std::ofstream ofs(filename, std::ios::trunc);
if (not ofs)
{
std::cerr << "saveTime failed - cannot open "
<< filename << " for write\n";
return false;
}
ofs << std::dec << time << "\n";
return true;
}
template <typename URV>
bool
System<URV>::saveSnapshot(const std::string& dir)
{
Filesystem::path dirPath = dir;
if (not Filesystem::is_directory(dirPath))
if (not Filesystem::create_directories(dirPath))
{
std::cerr << "Error: Failed to create snapshot directory " << dir << '\n';
return false;
}
uint64_t minSp = ~uint64_t(0);
for (auto hartPtr : sysHarts_)
{
std::string name = "registers";
if (hartCount_ > 1)
name += std::to_string(hartPtr->sysHartIndex());
Filesystem::path regPath = dirPath / name;
if (not hartPtr->saveSnapshotRegs(regPath.string()))
return false;
URV sp = 0;
if (not hartPtr->peekIntReg(IntRegNumber::RegSp, sp))
assert(0);
minSp = std::min(minSp, uint64_t(sp));
}
auto& hart0 = *ithHart(0);
auto& syscall = hart0.getSyscall();
Filesystem::path usedBlocksPath = dirPath / "usedblocks";
std::vector<std::pair<uint64_t,uint64_t>> usedBlocks;
if (sparseMem_)
sparseMem_->getUsedBlocks(usedBlocks);
else
syscall.getUsedMemBlocks(minSp, usedBlocks);
if (not saveUsedMemBlocks(usedBlocksPath.string(), usedBlocks))
return false;
Filesystem::path timePath = dirPath / "time";
if (not saveTime(timePath.string(), time_))
return false;
Filesystem::path memPath = dirPath / "memory";
if (not memory_->saveSnapshot(memPath.string(), usedBlocks))
return false;
Filesystem::path fdPath = dirPath / "fd";
if (not syscall.saveFileDescriptors(fdPath.string()))
return false;
Filesystem::path mmapPath = dirPath / "mmap";
if (not syscall.saveMmap(mmapPath.string()))
return false;
Filesystem::path dtracePath = dirPath / "data-lines";
if (not memory_->saveDataAddressTrace(dtracePath))
return false;
Filesystem::path itracePath = dirPath / "instr-lines";
if (not memory_->saveInstructionAddressTrace(itracePath))
return false;
Filesystem::path branchPath = dirPath / "branch-trace";
if (not hart0.saveBranchTrace(branchPath))
return false;
Filesystem::path imsicPath = dirPath / "imsic";
if (not imsicMgr_.saveSnapshot(imsicPath))
return false;
return true;
}
static
bool
loadUsedMemBlocks(const std::string& filename,
std::vector<std::pair<uint64_t, uint64_t>>& blocks)
{
blocks.clear();
std::ifstream ifs(filename);
if (not ifs)
{
std::cerr << "loadUsedMemBlocks failed - cannot open "
<< filename << " for read\n";
return false;
}
std::string line;
while (std::getline(ifs, line))
{
std::istringstream iss(line);
uint64_t addr, length;
iss >> addr;
iss >> length;
blocks.emplace_back(addr, length);
}
return true;
}
static
bool
loadTime(const std::string& filename, uint64_t& time)
{
std::ifstream ifs(filename);
if (not ifs)
{
std::cerr << "loadTime failed - cannot open "
<< filename << " for read\n";
return false;
}
std::string line;
std::getline(ifs, line);
uint64_t val = strtoull(line.c_str(), nullptr, 0);
time = val;
return true;
}
template <typename URV>
bool
System<URV>::configImsic(uint64_t mbase, uint64_t mstride,
uint64_t sbase, uint64_t sstride,
unsigned guests, const std::vector<unsigned>& idsVec,
const std::vector<unsigned>& tmVec, // Threshold masks
bool trace)
{
using std::cerr;
size_t ps = pageSize();
if ((mbase % ps) != 0)
{
cerr << "Error: IMISC mbase (0x" << std::hex << mbase << ") is not"
<< " a multiple of page size (0x" << ps << ")\n" << std::dec;
return false;
}
if (mstride == 0)
{
cerr << "Error: IMSIC mstride must not be zero.\n";
return false;
}
if ((mstride % ps) != 0)
{
cerr << "Error: IMISC mstride (0x" << std::hex << mstride << ") is not"
<< " a multiple of page size (0x" << ps << ")\n" << std::dec;
return false;
}
if (sstride)
{
if ((sbase % ps) != 0)
{
cerr << "Error: IMISC sbase (0x" << std::hex << sbase << ") is not"
<< " a multiple of page size (0x" << ps << ")\n" << std::dec;
return false;
}
if ((sstride % ps) != 0)
{
cerr << "Error: IMISC sstride (0x" << std::hex << sstride << ") is not"
<< " a multiple of page size (0x" << ps << ")\n" << std::dec;
return false;
}
}
if (guests and sstride < (guests + 1)*ps)
{
cerr << "Error: IMISC supervisor stride (0x" << std::hex << sstride << ") is"
<< " too small for configured guests (" << std::dec << guests << ").\n";
return false;
}
if (mstride and sstride)
{
unsigned hc = hartCount();
uint64_t mend = mbase + hc*mstride, send = sbase + hc*sstride;
if ((sbase > mbase and sbase < mend) or
(send > mbase and send < mend))
{
cerr << "Error: IMSIC machine file address range overlaps that of supervisor.\n";
return false;
}
}
if (idsVec.size() != 3)
{
cerr << "Error: IMSIC interrupt-ids array size (" << idsVec.size() << ") is "
<< "invalid -- Expecting 3.\n";
return false;
}
for (auto ids : idsVec)
{
if ((ids % 64) != 0)
{
cerr << "Error: IMSIC interrupt id limit (" << ids << ") is not a multiple of 64.\n";
return false;
}
if (ids > 2048)
{
cerr << "Error: IMSIC interrupt id limit (" << ids << ") is larger than 2048.\n";
return false;
}
}
if (idsVec.size() != tmVec.size())
{
cerr << "Error: IMSIC interrupt ids count (" << idsVec.size() << ") is different "
<< " thant the threshold-mask count (" << tmVec.size() << ")\n";
return false;
}
for (size_t i = 0; i < idsVec.size(); ++i)
{
if (tmVec.at(i) < idsVec.at(i) - 1)
{
cerr << "Error: Threshold mask (" << tmVec.at(0) << ") cannot be less than the "
<< "max interrupt id (" << (idsVec.at(i) - 1) << ").\n";
return false;
}
}
bool ok = imsicMgr_.configureMachine(mbase, mstride, idsVec.at(0), tmVec.at(0));
ok = imsicMgr_.configureSupervisor(sbase, sstride, idsVec.at(1), tmVec.at(1)) and ok;
ok = imsicMgr_.configureGuests(guests, idsVec.at(2), tmVec.at(2)) and ok;
if (not ok)
{
cerr << "Error: Failed to configure IMSIC.\n";
return false;
}
uint64_t mend = mbase + mstride * hartCount();
uint64_t send = sbase + sstride * hartCount();
auto readFunc = [this](uint64_t addr, unsigned size, uint64_t& data) -> bool {
return this->imsicMgr_.read(addr, size, data);
};
auto writeFunc = [this](uint64_t addr, unsigned size, uint64_t data) -> bool {
return this->imsicMgr_.write(addr, size, data);
};
for (unsigned i = 0; i < hartCount(); ++i)
{
auto hart = ithHart(i);
auto imsic = imsicMgr_.ithImsic(i);
hart->attachImsic(imsic, mbase, mend, sbase, send, readFunc, writeFunc, trace);
}
return true;
}
template <typename URV>
bool
System<URV>::configPci(uint64_t configBase, uint64_t mmioBase, uint64_t mmioSize, unsigned buses, unsigned slots)
{
if (mmioBase - configBase < (1ULL << 28))
{
std::cerr << "PCI config space typically needs 28bits to fully cover entire region" << std::endl;
return false;
}
pci_ = std::make_shared<Pci>(configBase, (1ULL << 28), mmioBase, mmioSize, buses, slots);
auto readf = [this](uint64_t addr, size_t size, uint64_t& data) -> bool {
bool ok = false;
if (size == 1)
{
uint8_t tmp = 0;
ok = this->memory_->peek(addr, tmp, false);
data = tmp;
}
if (size == 2)
{
uint16_t tmp = 0;
ok = this->memory_->peek(addr, tmp, false);
data = tmp;
}
if (size == 4)
{
uint32_t tmp = 0;
ok = this->memory_->peek(addr, tmp, false);
data = tmp;
}
if (size == 8)
return this->memory_->peek(addr, data, false);
return ok;
};
auto writef = [this](uint64_t addr, size_t size, uint64_t data) -> bool {
bool ok = false;
if (size == 1)
ok = this->memory_->poke(addr, uint8_t(data), false);
if (size == 2)
ok = this->memory_->poke(addr, uint16_t(data), false);
if (size == 4)
ok = this->memory_->poke(addr, uint32_t(data), false);
if (size == 8)
ok = this->memory_->poke(addr, data, false);
return ok;
};
auto msif = [this](uint64_t addr, unsigned size, uint64_t data) -> bool {
return this->imsicMgr_.write(addr, size, data);
};
pci_->define_read_mem(readf);
pci_->define_write_mem(writef);
pci_->define_msi(msif);
for (auto& hart : sysHarts_)
hart->attachPci(pci_);
return true;
}
template <typename URV>
bool
System<URV>::addPciDevices(const std::vector<std::string>& devs)
{
if (not pci_)
{
std::cerr << "Please specify a PCI region in the json" << std::endl;
return false;
}
for (const auto& devStr : devs)
{
std::vector<std::string> tokens;
boost::split(tokens, devStr, boost::is_any_of(":"), boost::token_compress_on);
if (tokens.size() < 3)
{
std::cerr << "PCI device string should have at least 3 fields" << std::endl;
return false;
}
std::string name = tokens.at(0);
unsigned bus = std::stoi(tokens.at(1));
unsigned slot = std::stoi(tokens.at(2));
if (name == "virtio-blk")
{
if (not (tokens.size() == 4))
{
std::cerr << "virtio-blk requires backing input file" << std::endl;
return false;
}
std::shared_ptr<Blk> dev = std::make_shared<Blk>(false);
if (not dev->open_file(tokens.at(3)))
return false;
if (not pci_->register_device(dev, bus, slot))
return false;
}
else
return false;
}
return true;
}
template <typename URV>
bool
System<URV>::enableMcm(unsigned mbLineSize, bool mbLineCheckAll,
const std::vector<unsigned>& enabledPpos)
{
if (mbLineSize != 0)
if (not isPowerOf2(mbLineSize) or mbLineSize > 512)
{
std::cerr << "Error: Invalid merge buffer line size: "
<< mbLineSize << '\n';
return false;
}
mcm_ = std::make_shared<Mcm<URV>>(this->hartCount(), pageSize(), mbLineSize);
mbSize_ = mbLineSize;
mcm_->setCheckWholeMbLine(mbLineCheckAll);
mcm_->enablePpo(false);
for (auto ppoIx : enabledPpos)
if (ppoIx < Mcm<URV>::PpoRule::Limit)
{
typedef typename Mcm<URV>::PpoRule Rule;
Rule rule = Rule(ppoIx);
mcm_->enablePpo(rule, true);
}
for (auto& hart : sysHarts_)
hart->setMcm(mcm_);
return true;
}
template <typename URV>
bool
System<URV>::enableMcm(unsigned mbLineSize, bool mbLineCheckAll, bool enablePpos)
{
if (mbLineSize != 0)
if (not isPowerOf2(mbLineSize) or mbLineSize > 512)
{
std::cerr << "Error: Invalid merge buffer line size: "
<< mbLineSize << '\n';
return false;
}
mcm_ = std::make_shared<Mcm<URV>>(this->hartCount(), pageSize(), mbLineSize);
mbSize_ = mbLineSize;
mcm_->setCheckWholeMbLine(mbLineCheckAll);
typedef typename Mcm<URV>::PpoRule Rule;
for (unsigned ix = 0; ix < Rule::Io; ++ix) // Temporary: Disable IO rule.
{
Rule rule = Rule(ix);
mcm_->enablePpo(rule, enablePpos);
}
for (auto& hart : sysHarts_)
hart->setMcm(mcm_);
return true;
}
template <typename URV>
void
System<URV>::endMcm()
{
if (mcm_)
{
auto& path = memory_->dataLineTracePath();
if (not path.empty())
{
bool skipClean = true;
bool includeValues = true;
memory_->saveDataAddressTrace(path, skipClean, includeValues);
std::string emptyPath;
memory_->enableDataLineTrace(emptyPath); // Disable
}
}
for (auto& hart : sysHarts_)
hart->setMcm(nullptr);
mcm_ = nullptr;
}
template <typename URV>
bool
System<URV>::enablePerfApi(std::vector<FILE*>& traceFiles)
{
if constexpr (sizeof(URV) == 4)
{
std::cerr << "Performance model API is not supported for RV32\n";
return false;
}
else
{
perfApi_ = std::make_shared<TT_PERF::PerfApi>(*this);
for (auto& hart : sysHarts_)
hart->setPerfApi(perfApi_);
perfApi_->enableTraceLog(traceFiles);
}
return true;
}
template <typename URV>
void
System<URV>::enableTso(bool flag)
{
if (mcm_)
mcm_->enableTso(flag);
}
template <typename URV>
bool
System<URV>::mcmRead(Hart<URV>& hart, uint64_t time, uint64_t tag, uint64_t addr,
unsigned size, uint64_t data, unsigned elemIx, unsigned field)
{
if (not mcm_)
return false;
return mcm_->readOp(hart, time, tag, addr, size, data, elemIx, field);
}
template <typename URV>
bool
System<URV>::mcmMbWrite(Hart<URV>& hart, uint64_t time, uint64_t addr,
const std::vector<uint8_t>& data,
const std::vector<bool>& mask)
{
if (not mcm_)
return false;
return mcm_->mergeBufferWrite(hart, time, addr, data, mask);
}
template <typename URV>
bool
System<URV>::mcmMbInsert(Hart<URV>& hart, uint64_t time, uint64_t tag, uint64_t addr,
unsigned size, uint64_t data, unsigned elem, unsigned field)
{
if (not mcm_)
return false;
return mcm_->mergeBufferInsert(hart, time, tag, addr, size, data, elem, field);
}
template <typename URV>
bool
System<URV>::mcmBypass(Hart<URV>& hart, uint64_t time, uint64_t tag, uint64_t addr,
unsigned size, uint64_t data, unsigned elem, unsigned field)
{
if (not mcm_)
return false;
return mcm_->bypassOp(hart, time, tag, addr, size, data, elem, field);
}
template <typename URV>
bool
System<URV>::mcmIFetch(Hart<URV>& hart, uint64_t /*time*/, uint64_t addr)
{
if (not mcm_)
return false;
return hart.mcmIFetch(addr);
}
template <typename URV>
bool
System<URV>::mcmIEvict(Hart<URV>& hart, uint64_t /*time*/, uint64_t addr)
{
if (not mcm_)
return false;
return hart.mcmIEvict(addr);
}