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/*
This file is part of cpp-ethereum.
cpp-ethereum is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
cpp-ethereum is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
*/
/** @file main.cpp
* @author Gav Wood <i@gavwood.com>
* @date 2014
* EVM Execution tool.
*/
#include <fstream>
#include <iostream>
#include <boost/algorithm/string.hpp>
#include <libdevcore/CommonIO.h>
#include <libdevcore/RLP.h>
#include <libdevcore/SHA3.h>
#include <libethereum/State.h>
#include <libethereum/Executive.h>
#include <libevm/VM.h>
#include <libevm/VMFactory.h>
using namespace std;
using namespace dev;
using namespace eth;
void help()
{
cout
<< "Usage ethvm <options> [trace|stats|output] (<file>|--)" << endl
<< "Transaction options:" << endl
<< " --value <n> Transaction should transfer the <n> wei (default: 0)." << endl
<< " --gas <n> Transaction should be given <n> gas (default: block gas limit)." << endl
<< " --gas-price <n> Transaction's gas price' should be <n> (default: 0)." << endl
<< " --sender <a> Transaction sender should be <a> (default: 0000...0069)." << endl
<< " --origin <a> Transaction origin should be <a> (default: 0000...0069)." << endl
#if ETH_EVMJIT || !ETH_TRUE
<< endl
<< "VM options:" << endl
<< " --vm <vm-kind> Select VM. Options are: interpreter, jit, smart. (default: interpreter)" << endl
#endif
<< endl
<< "Options for trace:" << endl
<< " --flat Minimal whitespace in the JSON." << endl
<< " --mnemonics Show instruction mnemonics in the trace (non-standard)." << endl
<< endl
<< "General options:" << endl
<< " -V,--version Show the version and exit." << endl
<< " -h,--help Show this help message and exit." << endl;
exit(0);
}
void version()
{
cout << "ethvm version " << dev::Version << endl;
cout << "By Gav Wood, 2015." << endl;
cout << "Build: " << DEV_QUOTED(ETH_BUILD_PLATFORM) << "/" << DEV_QUOTED(ETH_BUILD_TYPE) << endl;
exit(0);
}
enum class Mode
{
Trace,
Statistics,
OutputOnly
};
int main(int argc, char** argv)
{
string incoming = "--";
Mode mode = Mode::Statistics;
State state;
Address sender = Address(69);
Address origin = Address(69);
u256 value = 0;
u256 gas = state.gasLimitRemaining();
u256 gasPrice = 0;
bool styledJson = true;
StandardTrace st;
for (int i = 1; i < argc; ++i)
{
string arg = argv[i];
if (arg == "-h" || arg == "--help")
help();
else if (arg == "-V" || arg == "--version")
version();
#if ETH_EVMJIT
else if (arg == "--vm" && i + 1 < argc)
{
string vmKind = argv[++i];
if (vmKind == "interpreter")
VMFactory::setKind(VMKind::Interpreter);
else if (vmKind == "jit")
VMFactory::setKind(VMKind::JIT);
else if (vmKind == "smart")
VMFactory::setKind(VMKind::Smart);
else
{
cerr << "Unknown VM kind: " << vmKind << endl;
return -1;
}
}
#endif
else if (arg == "--mnemonics")
st.setShowMnemonics();
else if (arg == "--flat")
styledJson = false;
else if (arg == "--value" && i + 1 < argc)
value = u256(argv[++i]);
else if (arg == "--sender" && i + 1 < argc)
sender = Address(argv[++i]);
else if (arg == "--origin" && i + 1 < argc)
origin = Address(argv[++i]);
else if (arg == "--gas" && i + 1 < argc)
gas = u256(argv[++i]);
else if (arg == "--gas-price" && i + 1 < argc)
gasPrice = u256(argv[++i]);
else if (arg == "--value" && i + 1 < argc)
value = u256(argv[++i]);
else if (arg == "--value" && i + 1 < argc)
value = u256(argv[++i]);
else if (arg == "stats")
mode = Mode::Statistics;
else if (arg == "output")
mode = Mode::OutputOnly;
else if (arg == "trace")
mode = Mode::Trace;
else
incoming = arg;
}
bytes code;
if (incoming == "--" || incoming.empty())
for (int i = cin.get(); i != -1; i = cin.get())
code.push_back((char)i);
else
code = contents(incoming);
bytes data = fromHex(boost::trim_copy(asString(code)));
if (data.empty())
data = code;
state.addBalance(sender, value);
Executive executive(state, eth::LastHashes(), 0);
ExecutionResult res;
executive.setResultRecipient(res);
Transaction t = eth::Transaction(value, gasPrice, gas, data, 0);
t.forceSender(sender);
unordered_map<byte, pair<unsigned, bigint>> counts;
unsigned total = 0;
bigint memTotal;
auto onOp = [&](uint64_t step, Instruction inst, bigint m, bigint gasCost, bigint gas, VM* vm, ExtVMFace const* extVM) {
if (mode == Mode::Statistics)
{
counts[(byte)inst].first++;
counts[(byte)inst].second += gasCost;
total++;
if (m > 0)
memTotal = m;
}
else if (mode == Mode::Trace)
st(step, inst, m, gasCost, gas, vm, extVM);
};
executive.initialize(t);
executive.create(sender, value, gasPrice, gas, &data, origin);
Timer timer;
executive.go(onOp);
double execTime = timer.elapsed();
executive.finalize();
bytes output = std::move(res.output);
if (mode == Mode::Statistics)
{
cout << "Gas used: " << res.gasUsed << " (+" << t.gasRequired() << " for transaction, -" << res.gasRefunded << " refunded)" << endl;
cout << "Output: " << toHex(output) << endl;
LogEntries logs = executive.logs();
cout << logs.size() << " logs" << (logs.empty() ? "." : ":") << endl;
for (LogEntry const& l: logs)
{
cout << " " << l.address.hex() << ": " << toHex(t.data()) << endl;
for (h256 const& t: l.topics)
cout << " " << t.hex() << endl;
}
cout << total << " operations in " << execTime << " seconds." << endl;
cout << "Maximum memory usage: " << memTotal * 32 << " bytes" << endl;
cout << "Expensive operations:" << endl;
for (auto const& c: {Instruction::SSTORE, Instruction::SLOAD, Instruction::CALL, Instruction::CREATE, Instruction::CALLCODE, Instruction::MSTORE8, Instruction::MSTORE, Instruction::MLOAD, Instruction::SHA3})
if (!!counts[(byte)c].first)
cout << " " << instructionInfo(c).name << " x " << counts[(byte)c].first << " (" << counts[(byte)c].second << " gas)" << endl;
}
else if (mode == Mode::Trace)
cout << st.json(styledJson);
else if (mode == Mode::OutputOnly)
cout << toHex(output);
return 0;
}