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81 lines
2.2 KiB
81 lines
2.2 KiB
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#include "ExecutionEngine.h"
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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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namespace evmcc
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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)
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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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{
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if (!errorMsg.empty())
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std::cerr << "error creating EE: " << errorMsg << std::endl;
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else
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std::cerr << "unknown error creating llvm::ExecutionEngine" << std::endl;
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exit(1);
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}
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_module.release(); // Successfully created llvm::ExecutionEngine takes ownership of the module
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exec->finalizeObject();
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auto entryFunc = module->getFunction("main");
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if (!entryFunc)
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{
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std::cerr << "main function not found\n";
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exit(1);
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}
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auto result = exec->runFunction(entryFunc, {});
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auto intResult = result.IntVal.getZExtValue();
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return intResult;
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}
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}
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