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external/llvm/tools/llvm-pdbutil/LinePrinter.cpp
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335
external/llvm/tools/llvm-pdbutil/LinePrinter.cpp
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//===- LinePrinter.cpp ------------------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "LinePrinter.h"
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#include "llvm-pdbutil.h"
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#include "llvm/ADT/STLExtras.h"
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#include "llvm/DebugInfo/MSF/MSFCommon.h"
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#include "llvm/DebugInfo/MSF/MappedBlockStream.h"
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#include "llvm/DebugInfo/PDB/Native/PDBFile.h"
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#include "llvm/DebugInfo/PDB/UDTLayout.h"
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#include "llvm/Support/BinaryStreamReader.h"
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#include "llvm/Support/Format.h"
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#include "llvm/Support/FormatAdapters.h"
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#include "llvm/Support/FormatVariadic.h"
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#include "llvm/Support/Regex.h"
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#include <algorithm>
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using namespace llvm;
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using namespace llvm::msf;
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using namespace llvm::pdb;
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namespace {
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bool IsItemExcluded(llvm::StringRef Item,
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std::list<llvm::Regex> &IncludeFilters,
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std::list<llvm::Regex> &ExcludeFilters) {
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if (Item.empty())
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return false;
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auto match_pred = [Item](llvm::Regex &R) { return R.match(Item); };
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// Include takes priority over exclude. If the user specified include
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// filters, and none of them include this item, them item is gone.
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if (!IncludeFilters.empty() && !any_of(IncludeFilters, match_pred))
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return true;
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if (any_of(ExcludeFilters, match_pred))
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return true;
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return false;
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}
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}
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using namespace llvm;
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LinePrinter::LinePrinter(int Indent, bool UseColor, llvm::raw_ostream &Stream)
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: OS(Stream), IndentSpaces(Indent), CurrentIndent(0), UseColor(UseColor) {
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SetFilters(ExcludeTypeFilters, opts::pretty::ExcludeTypes.begin(),
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opts::pretty::ExcludeTypes.end());
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SetFilters(ExcludeSymbolFilters, opts::pretty::ExcludeSymbols.begin(),
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opts::pretty::ExcludeSymbols.end());
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SetFilters(ExcludeCompilandFilters, opts::pretty::ExcludeCompilands.begin(),
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opts::pretty::ExcludeCompilands.end());
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SetFilters(IncludeTypeFilters, opts::pretty::IncludeTypes.begin(),
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opts::pretty::IncludeTypes.end());
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SetFilters(IncludeSymbolFilters, opts::pretty::IncludeSymbols.begin(),
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opts::pretty::IncludeSymbols.end());
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SetFilters(IncludeCompilandFilters, opts::pretty::IncludeCompilands.begin(),
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opts::pretty::IncludeCompilands.end());
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}
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void LinePrinter::Indent(uint32_t Amount) {
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if (Amount == 0)
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Amount = IndentSpaces;
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CurrentIndent += Amount;
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}
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void LinePrinter::Unindent(uint32_t Amount) {
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if (Amount == 0)
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Amount = IndentSpaces;
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CurrentIndent = std::max<int>(0, CurrentIndent - Amount);
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}
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void LinePrinter::NewLine() {
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OS << "\n";
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OS.indent(CurrentIndent);
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}
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void LinePrinter::print(const Twine &T) { OS << T; }
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void LinePrinter::printLine(const Twine &T) {
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NewLine();
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OS << T;
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}
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bool LinePrinter::IsClassExcluded(const ClassLayout &Class) {
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if (IsTypeExcluded(Class.getName(), Class.getSize()))
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return true;
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if (Class.deepPaddingSize() < opts::pretty::PaddingThreshold)
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return true;
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return false;
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}
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void LinePrinter::formatBinary(StringRef Label, ArrayRef<uint8_t> Data,
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uint32_t StartOffset) {
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NewLine();
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OS << Label << " (";
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if (!Data.empty()) {
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OS << "\n";
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OS << format_bytes_with_ascii(Data, StartOffset, 32, 4,
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CurrentIndent + IndentSpaces, true);
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NewLine();
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}
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OS << ")";
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}
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void LinePrinter::formatBinary(StringRef Label, ArrayRef<uint8_t> Data,
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uint64_t Base, uint32_t StartOffset) {
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NewLine();
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OS << Label << " (";
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if (!Data.empty()) {
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OS << "\n";
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Base += StartOffset;
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OS << format_bytes_with_ascii(Data, Base, 32, 4,
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CurrentIndent + IndentSpaces, true);
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NewLine();
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}
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OS << ")";
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}
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namespace {
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struct Run {
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Run() = default;
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explicit Run(uint32_t Block) : Block(Block) {}
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uint32_t Block = 0;
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uint32_t ByteLen = 0;
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};
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} // namespace
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static std::vector<Run> computeBlockRuns(uint32_t BlockSize,
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const msf::MSFStreamLayout &Layout) {
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std::vector<Run> Runs;
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if (Layout.Length == 0)
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return Runs;
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ArrayRef<support::ulittle32_t> Blocks = Layout.Blocks;
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assert(!Blocks.empty());
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uint32_t StreamBytesRemaining = Layout.Length;
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uint32_t CurrentBlock = Blocks[0];
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Runs.emplace_back(CurrentBlock);
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while (!Blocks.empty()) {
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Run *CurrentRun = &Runs.back();
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uint32_t NextBlock = Blocks.front();
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if (NextBlock < CurrentBlock || (NextBlock - CurrentBlock > 1)) {
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Runs.emplace_back(NextBlock);
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CurrentRun = &Runs.back();
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}
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uint32_t Used = std::min(BlockSize, StreamBytesRemaining);
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CurrentRun->ByteLen += Used;
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StreamBytesRemaining -= Used;
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CurrentBlock = NextBlock;
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Blocks = Blocks.drop_front();
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}
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return Runs;
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}
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static std::pair<Run, uint32_t> findRun(uint32_t Offset, ArrayRef<Run> Runs) {
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for (const auto &R : Runs) {
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if (Offset < R.ByteLen)
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return std::make_pair(R, Offset);
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Offset -= R.ByteLen;
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}
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llvm_unreachable("Invalid offset!");
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}
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void LinePrinter::formatMsfStreamData(StringRef Label, PDBFile &File,
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uint32_t StreamIdx,
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StringRef StreamPurpose, uint32_t Offset,
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uint32_t Size) {
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if (StreamIdx >= File.getNumStreams()) {
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formatLine("Stream {0}: Not present", StreamIdx);
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return;
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}
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if (Size + Offset > File.getStreamByteSize(StreamIdx)) {
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formatLine(
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"Stream {0}: Invalid offset and size, range out of stream bounds",
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StreamIdx);
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return;
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}
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auto S = MappedBlockStream::createIndexedStream(
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File.getMsfLayout(), File.getMsfBuffer(), StreamIdx, File.getAllocator());
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if (!S) {
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NewLine();
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formatLine("Stream {0}: Not present", StreamIdx);
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return;
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}
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uint32_t End =
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(Size == 0) ? S->getLength() : std::min(Offset + Size, S->getLength());
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Size = End - Offset;
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formatLine("Stream {0}: {1} (dumping {2:N} / {3:N} bytes)", StreamIdx,
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StreamPurpose, Size, S->getLength());
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AutoIndent Indent(*this);
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BinaryStreamRef Slice(*S);
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BinarySubstreamRef Substream;
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Substream.Offset = Offset;
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Substream.StreamData = Slice.drop_front(Offset).keep_front(Size);
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auto Layout = File.getStreamLayout(StreamIdx);
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formatMsfStreamData(Label, File, Layout, Substream);
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}
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void LinePrinter::formatMsfStreamData(StringRef Label, PDBFile &File,
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const msf::MSFStreamLayout &Stream,
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BinarySubstreamRef Substream) {
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BinaryStreamReader Reader(Substream.StreamData);
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auto Runs = computeBlockRuns(File.getBlockSize(), Stream);
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NewLine();
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OS << Label << " (";
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while (Reader.bytesRemaining() > 0) {
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OS << "\n";
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Run FoundRun;
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uint32_t RunOffset;
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std::tie(FoundRun, RunOffset) = findRun(Substream.Offset, Runs);
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assert(FoundRun.ByteLen >= RunOffset);
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uint32_t Len = FoundRun.ByteLen - RunOffset;
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Len = std::min(Len, Reader.bytesRemaining());
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uint64_t Base = FoundRun.Block * File.getBlockSize() + RunOffset;
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ArrayRef<uint8_t> Data;
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consumeError(Reader.readBytes(Data, Len));
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OS << format_bytes_with_ascii(Data, Base, 32, 4,
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CurrentIndent + IndentSpaces, true);
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if (Reader.bytesRemaining() > 0) {
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NewLine();
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OS << formatv(" {0}",
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fmt_align("<discontinuity>", AlignStyle::Center, 114, '-'));
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}
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Substream.Offset += Len;
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}
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NewLine();
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OS << ")";
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}
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void LinePrinter::formatMsfStreamBlocks(
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PDBFile &File, const msf::MSFStreamLayout &StreamLayout) {
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auto Blocks = makeArrayRef(StreamLayout.Blocks);
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uint32_t L = StreamLayout.Length;
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while (L > 0) {
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NewLine();
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assert(!Blocks.empty());
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OS << formatv("Block {0} (\n", uint32_t(Blocks.front()));
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uint32_t UsedBytes = std::min(L, File.getBlockSize());
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ArrayRef<uint8_t> BlockData =
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cantFail(File.getBlockData(Blocks.front(), File.getBlockSize()));
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uint64_t BaseOffset = Blocks.front();
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BaseOffset *= File.getBlockSize();
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OS << format_bytes_with_ascii(BlockData, BaseOffset, 32, 4,
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CurrentIndent + IndentSpaces, true);
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NewLine();
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OS << ")";
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NewLine();
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L -= UsedBytes;
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Blocks = Blocks.drop_front();
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}
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}
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bool LinePrinter::IsTypeExcluded(llvm::StringRef TypeName, uint32_t Size) {
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if (IsItemExcluded(TypeName, IncludeTypeFilters, ExcludeTypeFilters))
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return true;
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if (Size < opts::pretty::SizeThreshold)
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return true;
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return false;
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}
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bool LinePrinter::IsSymbolExcluded(llvm::StringRef SymbolName) {
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return IsItemExcluded(SymbolName, IncludeSymbolFilters, ExcludeSymbolFilters);
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}
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bool LinePrinter::IsCompilandExcluded(llvm::StringRef CompilandName) {
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return IsItemExcluded(CompilandName, IncludeCompilandFilters,
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ExcludeCompilandFilters);
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}
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WithColor::WithColor(LinePrinter &P, PDB_ColorItem C)
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: OS(P.OS), UseColor(P.hasColor()) {
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if (UseColor)
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applyColor(C);
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}
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WithColor::~WithColor() {
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if (UseColor)
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OS.resetColor();
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}
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void WithColor::applyColor(PDB_ColorItem C) {
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switch (C) {
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case PDB_ColorItem::None:
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OS.resetColor();
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return;
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case PDB_ColorItem::Comment:
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OS.changeColor(raw_ostream::GREEN, false);
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return;
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case PDB_ColorItem::Address:
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OS.changeColor(raw_ostream::YELLOW, /*bold=*/true);
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return;
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case PDB_ColorItem::Keyword:
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OS.changeColor(raw_ostream::MAGENTA, true);
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return;
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case PDB_ColorItem::Register:
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case PDB_ColorItem::Offset:
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OS.changeColor(raw_ostream::YELLOW, false);
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return;
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case PDB_ColorItem::Type:
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OS.changeColor(raw_ostream::CYAN, true);
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return;
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case PDB_ColorItem::Identifier:
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OS.changeColor(raw_ostream::CYAN, false);
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return;
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case PDB_ColorItem::Path:
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OS.changeColor(raw_ostream::CYAN, false);
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return;
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case PDB_ColorItem::Padding:
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case PDB_ColorItem::SectionHeader:
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OS.changeColor(raw_ostream::RED, true);
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return;
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case PDB_ColorItem::LiteralValue:
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OS.changeColor(raw_ostream::GREEN, true);
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return;
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}
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}
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