77 lines · cpp
1//===----------- ChildTarget.cpp - Out-of-proc executor for lli -----------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8//9// Simple out-of-process executor for lli.10//11//===----------------------------------------------------------------------===//12 13#include "llvm/Config/llvm-config.h" // for LLVM_ENABLE_THREADS14#include "llvm/ExecutionEngine/Orc/TargetProcess/JITLoaderGDB.h"15#include "llvm/ExecutionEngine/Orc/TargetProcess/RegisterEHFrames.h"16#include "llvm/ExecutionEngine/Orc/TargetProcess/SimpleExecutorMemoryManager.h"17#include "llvm/ExecutionEngine/Orc/TargetProcess/SimpleRemoteEPCServer.h"18#include "llvm/Support/DynamicLibrary.h"19#include "llvm/Support/Error.h"20#include "llvm/Support/MathExtras.h"21#include "llvm/Support/raw_ostream.h"22#include <cstring>23#include <sstream>24 25using namespace llvm;26using namespace llvm::orc;27 28ExitOnError ExitOnErr;29 30int main(int argc, char *argv[]) {31#if LLVM_ENABLE_THREADS32 33 if (argc != 3) {34 errs() << "Usage: " << argv[0] << " <input fd> <output fd>\n";35 return 1;36 }37 38 if (sys::DynamicLibrary::LoadLibraryPermanently(nullptr)) {39 errs() << "Error loading program symbols.\n";40 return 1;41 }42 43 ExitOnErr.setBanner(std::string(argv[0]) + ": ");44 45 int InFD = 0;46 int OutFD = 0;47 {48 std::istringstream InFDStream(argv[1]), OutFDStream(argv[2]);49 InFDStream >> InFD;50 OutFDStream >> OutFD;51 }52 53 auto Server =54 ExitOnErr(SimpleRemoteEPCServer::Create<FDSimpleRemoteEPCTransport>(55 [](SimpleRemoteEPCServer::Setup &S) -> Error {56 S.setDispatcher(57 std::make_unique<SimpleRemoteEPCServer::ThreadDispatcher>());58 S.bootstrapSymbols() =59 SimpleRemoteEPCServer::defaultBootstrapSymbols();60 S.services().push_back(61 std::make_unique<rt_bootstrap::SimpleExecutorMemoryManager>());62 return Error::success();63 },64 InFD, OutFD));65 66 ExitOnErr(Server->waitForDisconnect());67 68 return 0;69 70#else71 errs() << argv[0]72 << " error: this tool requires threads, but LLVM was "73 "built with LLVM_ENABLE_THREADS=Off\n";74 return 1;75#endif76}77