| //===- ModuleSubstream.h ----------------------------------------*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_DEBUGINFO_CODEVIEW_MODULESUBSTREAM_H |
| #define LLVM_DEBUGINFO_CODEVIEW_MODULESUBSTREAM_H |
| |
| #include "llvm/DebugInfo/CodeView/CodeView.h" |
| #include "llvm/Support/BinaryStreamArray.h" |
| #include "llvm/Support/BinaryStreamRef.h" |
| #include "llvm/Support/Endian.h" |
| #include "llvm/Support/Error.h" |
| |
| namespace llvm { |
| namespace codeview { |
| |
| // Corresponds to the `CV_DebugSSubsectionHeader_t` structure. |
| struct ModuleSubsectionHeader { |
| support::ulittle32_t Kind; // codeview::ModuleSubstreamKind enum |
| support::ulittle32_t Length; // number of bytes occupied by this record. |
| }; |
| |
| // Corresponds to the `CV_DebugSLinesHeader_t` structure. |
| struct LineSubstreamHeader { |
| support::ulittle32_t RelocOffset; // Code offset of line contribution. |
| support::ulittle16_t RelocSegment; // Code segment of line contribution. |
| support::ulittle16_t Flags; // See LineFlags enumeration. |
| support::ulittle32_t CodeSize; // Code size of this line contribution. |
| }; |
| |
| // Corresponds to the `CV_DebugSLinesFileBlockHeader_t` structure. |
| struct LineFileBlockHeader { |
| support::ulittle32_t NameIndex; // Index in DBI name buffer of filename. |
| support::ulittle32_t NumLines; // Number of lines |
| support::ulittle32_t BlockSize; // Code size of block, in bytes. |
| // The following two variable length arrays appear immediately after the |
| // header. The structure definitions follow. |
| // LineNumberEntry Lines[NumLines]; |
| // ColumnNumberEntry Columns[NumLines]; |
| }; |
| |
| // Corresponds to `CV_Line_t` structure |
| struct LineNumberEntry { |
| support::ulittle32_t Offset; // Offset to start of code bytes for line number |
| support::ulittle32_t Flags; // Start:24, End:7, IsStatement:1 |
| }; |
| |
| // Corresponds to `CV_Column_t` structure |
| struct ColumnNumberEntry { |
| support::ulittle16_t StartColumn; |
| support::ulittle16_t EndColumn; |
| }; |
| |
| class ModuleSubstream { |
| public: |
| ModuleSubstream(); |
| ModuleSubstream(ModuleSubstreamKind Kind, BinaryStreamRef Data); |
| static Error initialize(BinaryStreamRef Stream, ModuleSubstream &Info); |
| uint32_t getRecordLength() const; |
| ModuleSubstreamKind getSubstreamKind() const; |
| BinaryStreamRef getRecordData() const; |
| |
| private: |
| ModuleSubstreamKind Kind; |
| BinaryStreamRef Data; |
| }; |
| |
| typedef VarStreamArray<ModuleSubstream> ModuleSubstreamArray; |
| } // namespace codeview |
| |
| template <> struct VarStreamArrayExtractor<codeview::ModuleSubstream> { |
| Error operator()(BinaryStreamRef Stream, uint32_t &Length, |
| codeview::ModuleSubstream &Info) const { |
| if (auto EC = codeview::ModuleSubstream::initialize(Stream, Info)) |
| return EC; |
| Length = Info.getRecordLength(); |
| return Error::success(); |
| } |
| }; |
| } // namespace llvm |
| |
| #endif // LLVM_DEBUGINFO_CODEVIEW_MODULESUBSTREAM_H |