| 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-exception |
| 6 | // |
| 7 | //===----------------------------------------------------------------------===// |
| 8 | // |
| 9 | // Simple out-of-process executor for lli. |
| 10 | // |
| 11 | //===----------------------------------------------------------------------===// |
| 12 | |
| 13 | #include "llvm/ExecutionEngine/Orc/TargetProcess/JITLoaderGDB.h" |
| 14 | #include "llvm/ExecutionEngine/Orc/TargetProcess/RegisterEHFrames.h" |
| 15 | #include "llvm/ExecutionEngine/Orc/TargetProcess/SimpleExecutorMemoryManager.h" |
| 16 | #include "llvm/ExecutionEngine/Orc/TargetProcess/SimpleRemoteEPCServer.h" |
| 17 | #include "llvm/Support/DynamicLibrary.h" |
| 18 | #include "llvm/Support/Error.h" |
| 19 | #include "llvm/Support/MathExtras.h" |
| 20 | #include "llvm/Support/raw_ostream.h" |
| 21 | #include <cstring> |
| 22 | #include <sstream> |
| 23 | |
| 24 | using namespace llvm; |
| 25 | using namespace llvm::orc; |
| 26 | |
| 27 | ExitOnError ExitOnErr; |
| 28 | |
| 29 | int main(int argc, char *argv[]) { |
| 30 | #if LLVM_ENABLE_THREADS |
| 31 | |
| 32 | if (argc != 3) { |
| 33 | errs() << "Usage: "<< argv[0] << " <input fd> <output fd>\n"; |
| 34 | return 1; |
| 35 | } |
| 36 | |
| 37 | if (sys::DynamicLibrary::LoadLibraryPermanently(Filename: nullptr)) { |
| 38 | errs() << "Error loading program symbols.\n"; |
| 39 | return 1; |
| 40 | } |
| 41 | |
| 42 | ExitOnErr.setBanner(std::string(argv[0]) + ": "); |
| 43 | |
| 44 | int InFD = 0; |
| 45 | int OutFD = 0; |
| 46 | { |
| 47 | std::istringstream InFDStream(argv[1]), OutFDStream(argv[2]); |
| 48 | InFDStream >> InFD; |
| 49 | OutFDStream >> OutFD; |
| 50 | } |
| 51 | |
| 52 | auto Server = |
| 53 | ExitOnErr(SimpleRemoteEPCServer::Create<FDSimpleRemoteEPCTransport>( |
| 54 | SetupFunction: [](SimpleRemoteEPCServer::Setup &S) -> Error { |
| 55 | S.setDispatcher( |
| 56 | std::make_unique<SimpleRemoteEPCServer::ThreadDispatcher>()); |
| 57 | S.bootstrapSymbols() = |
| 58 | SimpleRemoteEPCServer::defaultBootstrapSymbols(); |
| 59 | S.services().push_back( |
| 60 | x: std::make_unique<rt_bootstrap::SimpleExecutorMemoryManager>()); |
| 61 | return Error::success(); |
| 62 | }, |
| 63 | TransportTCtorArgs&: InFD, TransportTCtorArgs&: OutFD)); |
| 64 | |
| 65 | ExitOnErr(Server->waitForDisconnect()); |
| 66 | |
| 67 | return 0; |
| 68 | |
| 69 | #else |
| 70 | errs() << argv[0] |
| 71 | << " error: this tool requires threads, but LLVM was " |
| 72 | "built with LLVM_ENABLE_THREADS=Off\n"; |
| 73 | return 1; |
| 74 | #endif |
| 75 | } |
| 76 |