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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271622 91177308-0d34-0410-b5e6-96231b3b80d8
122 lines
4.4 KiB
C++
122 lines
4.4 KiB
C++
//===- ModuleSubstreamVisitor.h ---------------------------------*- 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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#ifndef LLVM_DEBUGINFO_CODEVIEW_MODULESUBSTREAMVISITOR_H
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#define LLVM_DEBUGINFO_CODEVIEW_MODULESUBSTREAMVISITOR_H
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#include "llvm/DebugInfo/CodeView/CodeView.h"
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#include "llvm/DebugInfo/CodeView/CodeViewError.h"
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#include "llvm/DebugInfo/CodeView/Line.h"
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#include "llvm/DebugInfo/CodeView/ModuleSubstream.h"
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#include "llvm/DebugInfo/CodeView/StreamReader.h"
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#include "llvm/DebugInfo/CodeView/StreamRef.h"
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namespace llvm {
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namespace codeview {
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struct LineColumnEntry {
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support::ulittle32_t Offset;
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FixedStreamArray<LineNumberEntry> LineNumbers;
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FixedStreamArray<ColumnNumberEntry> Columns;
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};
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template <> class VarStreamArrayExtractor<LineColumnEntry> {
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public:
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VarStreamArrayExtractor(const LineSubstreamHeader *Header) : Header(Header) {}
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Error operator()(StreamRef Stream, uint32_t &Len,
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LineColumnEntry &Item) const {
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const LineFileBlockHeader *BlockHeader;
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StreamReader Reader(Stream);
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if (auto EC = Reader.readObject(BlockHeader))
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return EC;
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bool HasColumn = Header->Flags & LineFlags::HaveColumns;
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uint32_t LineInfoSize =
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BlockHeader->NumLines *
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(sizeof(LineNumberEntry) + (HasColumn ? sizeof(ColumnNumberEntry) : 0));
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if (BlockHeader->BlockSize < sizeof(LineFileBlockHeader))
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return make_error<CodeViewError>(cv_error_code::corrupt_record,
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"Invalid line block record size");
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uint32_t Size = BlockHeader->BlockSize - sizeof(LineFileBlockHeader);
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if (LineInfoSize > Size)
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return make_error<CodeViewError>(cv_error_code::corrupt_record,
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"Invalid line block record size");
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// The value recorded in BlockHeader->BlockSize includes the size of
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// LineFileBlockHeader.
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Len = BlockHeader->BlockSize;
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Item.Offset = BlockHeader->FileOffset;
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if (auto EC = Reader.readArray(Item.LineNumbers, BlockHeader->NumLines))
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return EC;
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if (HasColumn) {
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if (auto EC = Reader.readArray(Item.Columns, BlockHeader->NumLines))
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return EC;
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}
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return Error::success();
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}
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private:
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const LineSubstreamHeader *Header;
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};
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struct FileChecksumEntry {
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uint32_t FileNameOffset;
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FileChecksumKind Kind;
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ArrayRef<uint8_t> Checksum;
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};
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template <> class VarStreamArrayExtractor<FileChecksumEntry> {
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public:
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Error operator()(StreamRef Stream, uint32_t &Len,
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FileChecksumEntry &Item) const {
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const FileChecksum *Header;
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StreamReader Reader(Stream);
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if (auto EC = Reader.readObject(Header))
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return EC;
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Item.FileNameOffset = Header->FileNameOffset;
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Item.Kind = static_cast<FileChecksumKind>(Header->ChecksumKind);
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if (auto EC = Reader.readBytes(Item.Checksum, Header->ChecksumSize))
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return EC;
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Len = sizeof(FileChecksum) + Header->ChecksumSize;
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return Error::success();
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}
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};
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typedef VarStreamArray<LineColumnEntry> LineInfoArray;
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typedef VarStreamArray<FileChecksumEntry> FileChecksumArray;
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class IModuleSubstreamVisitor {
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public:
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virtual ~IModuleSubstreamVisitor() {}
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virtual Error visitUnknown(ModuleSubstreamKind Kind, StreamRef Data) = 0;
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virtual Error visitSymbols(StreamRef Data);
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virtual Error visitLines(StreamRef Data, const LineSubstreamHeader *Header,
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const LineInfoArray &Lines);
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virtual Error visitStringTable(StreamRef Data);
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virtual Error visitFileChecksums(StreamRef Data,
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const FileChecksumArray &Checksums);
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virtual Error visitFrameData(StreamRef Data);
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virtual Error visitInlineeLines(StreamRef Data);
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virtual Error visitCrossScopeImports(StreamRef Data);
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virtual Error visitCrossScopeExports(StreamRef Data);
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virtual Error visitILLines(StreamRef Data);
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virtual Error visitFuncMDTokenMap(StreamRef Data);
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virtual Error visitTypeMDTokenMap(StreamRef Data);
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virtual Error visitMergedAssemblyInput(StreamRef Data);
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virtual Error visitCoffSymbolRVA(StreamRef Data);
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};
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Error visitModuleSubstream(const ModuleSubstream &R,
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IModuleSubstreamVisitor &V);
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} // namespace codeview
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} // namespace llvm
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#endif // LLVM_DEBUGINFO_CODEVIEW_MODULESUBSTREAMVISITOR_H
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