1 //===-- InitLLVM.cpp -----------------------------------------------------===// 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 #include "llvm/Support/InitLLVM.h" 10 #include "llvm/Support/Error.h" 11 #include "llvm/Support/ManagedStatic.h" 12 #include "llvm/Support/PrettyStackTrace.h" 13 #include "llvm/Support/Process.h" 14 #include "llvm/Support/Signals.h" 15 #include <string> 16 17 #ifdef _WIN32 18 #include "llvm/Support/Windows/WindowsSupport.h" 19 #endif 20 21 using namespace llvm; 22 using namespace llvm::sys; 23 24 InitLLVM::InitLLVM(int &Argc, const char **&Argv, 25 bool InstallPipeSignalExitHandler) 26 : StackPrinter(Argc, Argv) { 27 if (InstallPipeSignalExitHandler) 28 sys::SetOneShotPipeSignalFunction(sys::DefaultOneShotPipeSignalHandler); 29 sys::PrintStackTraceOnErrorSignal(Argv[0]); 30 install_out_of_memory_new_handler(); 31 32 #ifdef _WIN32 33 // We use UTF-8 as the internal character encoding. On Windows, 34 // arguments passed to main() may not be encoded in UTF-8. In order 35 // to reliably detect encoding of command line arguments, we use an 36 // Windows API to obtain arguments, convert them to UTF-8, and then 37 // write them back to the Argv vector. 38 // 39 // There's probably other way to do the same thing (e.g. using 40 // wmain() instead of main()), but this way seems less intrusive 41 // than that. 42 std::string Banner = std::string(Argv[0]) + ": "; 43 ExitOnError ExitOnErr(Banner); 44 45 ExitOnErr(errorCodeToError(windows::GetCommandLineArguments(Args, Alloc))); 46 47 // GetCommandLineArguments doesn't terminate the vector with a 48 // nullptr. Do it to make it compatible with the real argv. 49 Args.push_back(nullptr); 50 51 Argc = Args.size() - 1; 52 Argv = Args.data(); 53 #endif 54 } 55 56 InitLLVM::~InitLLVM() { llvm_shutdown(); } 57