1 //===- subzero/src/IceCompileServer.cpp - Compile server ------------------===//
3 // The Subzero Code Generator
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file defines the basic commandline-based compile server.
12 //===----------------------------------------------------------------------===//
18 // Include code to handle converting textual bitcode records to binary (for
19 // INPUT_IS_TEXTUAL_BITCODE).
20 #include "llvm/Bitcode/NaCl/NaClBitcodeMungeUtils.h"
22 #include "llvm/Support/FileSystem.h"
23 #include "llvm/Support/raw_os_ostream.h"
24 #include "llvm/Support/Signals.h"
25 #include "llvm/Support/SourceMgr.h"
26 #include "llvm/Support/StreamingMemoryObject.h"
28 #include "IceClFlags.h"
29 #include "IceClFlagsExtra.h"
30 #include "IceCompileServer.h"
31 #include "IceELFStreamer.h"
32 #include "IceGlobalContext.h"
38 static_assert(!(BuildDefs::textualBitcode() && PNACL_BROWSER_TRANSLATOR),
39 "Can not define INPUT_IS_TEXTUAL_BITCODE when building browswer "
42 // Define a SmallVector backed buffer as a data stream, so that it
43 // can hold the generated binary version of the textual bitcode in the
45 class TextDataStreamer : public llvm::DataStreamer {
47 TextDataStreamer() = default;
48 ~TextDataStreamer() final = default;
49 static TextDataStreamer *create(const IceString &Filename, std::string *Err);
50 size_t GetBytes(unsigned char *Buf, size_t Len) final;
53 llvm::SmallVector<char, 1024> BitcodeBuffer;
57 TextDataStreamer *TextDataStreamer::create(const IceString &Filename,
59 TextDataStreamer *Streamer = new TextDataStreamer();
60 llvm::raw_string_ostream ErrStrm(*Err);
61 if (std::error_code EC = llvm::readNaClRecordTextAndBuildBitcode(
62 Filename, Streamer->BitcodeBuffer, &ErrStrm)) {
63 ErrStrm << EC.message(); // << "\n";
72 size_t TextDataStreamer::GetBytes(unsigned char *Buf, size_t Len) {
73 if (Cursor >= BitcodeBuffer.size())
75 size_t Remaining = BitcodeBuffer.size();
76 Len = std::min(Len, Remaining);
77 for (size_t i = 0; i < Len; ++i)
78 Buf[i] = BitcodeBuffer[Cursor + i];
83 std::unique_ptr<Ostream> makeStream(const IceString &Filename,
84 std::error_code &EC) {
85 if (Filename == "-") {
86 return std::unique_ptr<Ostream>(new llvm::raw_os_ostream(std::cout));
88 return std::unique_ptr<Ostream>(
89 new llvm::raw_fd_ostream(Filename, EC, llvm::sys::fs::F_None));
93 ErrorCodes getReturnValue(const Ice::ClFlagsExtra &Flags, ErrorCodes Val) {
94 if (Flags.getAlwaysExitSuccess())
99 } // end of anonymous namespace
101 void CLCompileServer::run() {
102 if (BuildDefs::dump()) {
103 llvm::sys::PrintStackTraceOnErrorSignal();
105 ClFlags::parseFlags(argc, argv);
107 ClFlagsExtra ExtraFlags;
108 ClFlags::getParsedClFlags(Flags);
109 ClFlags::getParsedClFlagsExtra(ExtraFlags);
112 std::unique_ptr<Ostream> Ls = makeStream(ExtraFlags.getLogFilename(), EC);
114 llvm::report_fatal_error("Unable to open log file");
117 std::unique_ptr<Ostream> Os;
118 std::unique_ptr<ELFStreamer> ELFStr;
119 switch (Flags.getOutFileType()) {
121 if (ExtraFlags.getOutputFilename() == "-") {
122 *Ls << "Error: writing binary ELF to stdout is unsupported\n";
123 return transferErrorCode(getReturnValue(ExtraFlags, Ice::EC_Args));
125 std::unique_ptr<llvm::raw_fd_ostream> FdOs(new llvm::raw_fd_ostream(
126 ExtraFlags.getOutputFilename(), EC, llvm::sys::fs::F_None));
128 *Ls << "Failed to open output file: " << ExtraFlags.getOutputFilename()
129 << ":\n" << EC.message() << "\n";
130 return transferErrorCode(getReturnValue(ExtraFlags, Ice::EC_Args));
132 ELFStr.reset(new ELFStreamer(*FdOs.get()));
133 Os.reset(FdOs.release());
134 // NaCl sets st_blksize to 0, and LLVM uses that to pick the
135 // default preferred buffer size. Set to something non-zero.
136 Os->SetBufferSize(1 << 14);
140 Os = makeStream(ExtraFlags.getOutputFilename(), EC);
142 *Ls << "Failed to open output file: " << ExtraFlags.getOutputFilename()
143 << ":\n" << EC.message() << "\n";
144 return transferErrorCode(getReturnValue(ExtraFlags, Ice::EC_Args));
151 std::unique_ptr<llvm::DataStreamer> InputStream(
152 BuildDefs::textualBitcode()
153 ? TextDataStreamer::create(ExtraFlags.getIRFilename(), &StrError)
154 : llvm::getDataFileStreamer(ExtraFlags.getIRFilename(), &StrError));
155 if (!StrError.empty() || !InputStream) {
156 llvm::SMDiagnostic Err(ExtraFlags.getIRFilename(),
157 llvm::SourceMgr::DK_Error, StrError);
158 Err.print(ExtraFlags.getAppName().c_str(), *Ls);
159 return transferErrorCode(getReturnValue(ExtraFlags, Ice::EC_Bitcode));
163 new GlobalContext(Ls.get(), Os.get(), Ls.get(), ELFStr.get(), Flags));
164 if (Ctx->getFlags().getNumTranslationThreads() != 0) {
165 std::thread CompileThread([this, &ExtraFlags, &InputStream]() {
166 Ctx->initParserThread();
167 getCompiler().run(ExtraFlags, *Ctx.get(), std::move(InputStream));
169 CompileThread.join();
171 getCompiler().run(ExtraFlags, *Ctx.get(), std::move(InputStream));
173 transferErrorCode(getReturnValue(
174 ExtraFlags, static_cast<ErrorCodes>(Ctx->getErrorStatus()->value())));
177 } // end of namespace Ice