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149 lines
4.5 KiB
149 lines
4.5 KiB
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#include "ExecutionEngine.h"
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#include <csetjmp>
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#include <chrono>
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#include <llvm/IR/LLVMContext.h>
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#include <llvm/IR/Module.h>
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#include <llvm/ADT/Triple.h>
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#include <llvm/ExecutionEngine/ExecutionEngine.h>
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#include <llvm/ExecutionEngine/SectionMemoryManager.h>
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#include <llvm/ExecutionEngine/GenericValue.h>
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#include <llvm/ExecutionEngine/MCJIT.h>
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#include <llvm/Support/TargetSelect.h>
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#include <llvm/Support/Signals.h>
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#include <llvm/Support/PrettyStackTrace.h>
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#include <llvm/Support/Host.h>
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#include <libevm/VM.h>
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#include "Runtime.h"
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#include "Memory.h"
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#include "Stack.h"
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#include "Type.h"
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namespace dev
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{
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namespace eth
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{
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namespace jit
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{
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ExecutionEngine::ExecutionEngine()
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{
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}
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int ExecutionEngine::run(std::unique_ptr<llvm::Module> _module, u256& _gas, ExtVMFace* _ext)
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{
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auto module = _module.get(); // Keep ownership of the module in _module
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llvm::sys::PrintStackTraceOnErrorSignal();
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static const auto program = "evmcc";
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llvm::PrettyStackTraceProgram X(1, &program);
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auto&& context = llvm::getGlobalContext();
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llvm::InitializeNativeTarget();
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llvm::InitializeNativeTargetAsmPrinter();
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llvm::InitializeNativeTargetAsmParser();
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std::string errorMsg;
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llvm::EngineBuilder builder(module);
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//builder.setMArch(MArch);
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//builder.setMCPU(MCPU);
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//builder.setMAttrs(MAttrs);
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//builder.setRelocationModel(RelocModel);
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//builder.setCodeModel(CMModel);
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builder.setErrorStr(&errorMsg);
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builder.setEngineKind(llvm::EngineKind::JIT);
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builder.setUseMCJIT(true);
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builder.setMCJITMemoryManager(new llvm::SectionMemoryManager());
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builder.setOptLevel(llvm::CodeGenOpt::None);
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auto triple = llvm::Triple(llvm::sys::getProcessTriple());
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if (triple.getOS() == llvm::Triple::OSType::Win32)
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triple.setObjectFormat(llvm::Triple::ObjectFormatType::ELF); // MCJIT does not support COFF format
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module->setTargetTriple(triple.str());
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auto exec = std::unique_ptr<llvm::ExecutionEngine>(builder.create());
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if (!exec)
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BOOST_THROW_EXCEPTION(Exception() << errinfo_comment(errorMsg));
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_module.release(); // Successfully created llvm::ExecutionEngine takes ownership of the module
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auto finalizationStartTime = std::chrono::high_resolution_clock::now();
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exec->finalizeObject();
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auto finalizationEndTime = std::chrono::high_resolution_clock::now();
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clog(JIT) << "Module finalization time: "
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<< std::chrono::duration_cast<std::chrono::microseconds>(finalizationEndTime - finalizationStartTime).count();
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// Create fake ExtVM interface
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if (!_ext)
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{
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_ext = new ExtVMFace;
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_ext->myAddress = Address(1122334455667788);
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_ext->caller = Address(0xfacefacefaceface);
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_ext->origin = Address(101010101010101010);
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_ext->value = 0xabcd;
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_ext->gasPrice = 1002;
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_ext->previousBlock.hash = u256(1003);
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_ext->currentBlock.coinbaseAddress = Address(1004);
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_ext->currentBlock.timestamp = 1005;
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_ext->currentBlock.number = 1006;
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_ext->currentBlock.difficulty = 1007;
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_ext->currentBlock.gasLimit = 1008;
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std::string calldata = "Hello the Beautiful World of Ethereum!";
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_ext->data = calldata;
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unsigned char fakecode[] = {0x0d, 0x0e, 0x0a, 0x0d, 0x0b, 0x0e, 0xe, 0xf};
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_ext->code = decltype(_ext->code)(fakecode, 8);
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}
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auto entryFunc = module->getFunction("main");
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if (!entryFunc)
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BOOST_THROW_EXCEPTION(Exception() << errinfo_comment("main function not found"));
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ReturnCode returnCode;
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std::jmp_buf buf;
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Runtime runtime(_gas, *_ext, buf);
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auto r = setjmp(buf);
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if (r == 0)
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{
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auto executionStartTime = std::chrono::high_resolution_clock::now();
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auto result = exec->runFunction(entryFunc, {{}, llvm::GenericValue(runtime.getDataPtr())});
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returnCode = static_cast<ReturnCode>(result.IntVal.getZExtValue());
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auto executionEndTime = std::chrono::high_resolution_clock::now();
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clog(JIT) << "Execution time : "
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<< std::chrono::duration_cast<std::chrono::microseconds>(executionEndTime - executionStartTime).count();
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}
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else
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returnCode = static_cast<ReturnCode>(r);
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// Return remaining gas
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_gas = returnCode == ReturnCode::OutOfGas ? 0 : runtime.getGas();
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clog(JIT) << "Max stack size: " << Stack::maxStackSize;
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if (returnCode == ReturnCode::Return)
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{
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returnData = runtime.getReturnData().toVector(); // TODO: It might be better to place is in Runtime interface
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auto&& log = clog(JIT);
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log << "RETURN [ ";
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for (auto it = returnData.begin(), end = returnData.end(); it != end; ++it)
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log << std::hex << std::setw(2) << std::setfill('0') << (int)*it << " ";
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log << "]";
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}
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else
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cslog(JIT) << "RETURN " << (int)returnCode;
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return static_cast<int>(returnCode);
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}
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}
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}
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}
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