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2219387eaf
This was reverted because it was breaking some builds, and because of incorrect error code usage. Since the CL was large and contained many different things, I'm resubmitting it in pieces. This portion is NFC, and consists of: 1) Renaming classes to follow a consistent naming convention. 2) Fixing the const-ness of the interface methods. 3) Adding detailed doxygen comments. 4) Fixing a few instances of passing `const BinaryStream& X`. These are now passed as `BinaryStreamRef X`. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296394 91177308-0d34-0410-b5e6-96231b3b80d8
88 lines
3.0 KiB
C++
88 lines
3.0 KiB
C++
//===- ModuleSubstream.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_MODULESUBSTREAM_H
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#define LLVM_DEBUGINFO_CODEVIEW_MODULESUBSTREAM_H
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#include "llvm/DebugInfo/CodeView/CodeView.h"
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#include "llvm/DebugInfo/MSF/BinaryStreamArray.h"
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#include "llvm/DebugInfo/MSF/BinaryStreamRef.h"
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#include "llvm/Support/Endian.h"
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#include "llvm/Support/Error.h"
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namespace llvm {
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namespace codeview {
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// Corresponds to the `CV_DebugSSubsectionHeader_t` structure.
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struct ModuleSubsectionHeader {
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support::ulittle32_t Kind; // codeview::ModuleSubstreamKind enum
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support::ulittle32_t Length; // number of bytes occupied by this record.
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};
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// Corresponds to the `CV_DebugSLinesHeader_t` structure.
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struct LineSubstreamHeader {
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support::ulittle32_t RelocOffset; // Code offset of line contribution.
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support::ulittle16_t RelocSegment; // Code segment of line contribution.
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support::ulittle16_t Flags; // See LineFlags enumeration.
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support::ulittle32_t CodeSize; // Code size of this line contribution.
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};
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// Corresponds to the `CV_DebugSLinesFileBlockHeader_t` structure.
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struct LineFileBlockHeader {
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support::ulittle32_t NameIndex; // Index in DBI name buffer of filename.
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support::ulittle32_t NumLines; // Number of lines
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support::ulittle32_t BlockSize; // Code size of block, in bytes.
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// The following two variable length arrays appear immediately after the
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// header. The structure definitions follow.
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// LineNumberEntry Lines[NumLines];
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// ColumnNumberEntry Columns[NumLines];
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};
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// Corresponds to `CV_Line_t` structure
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struct LineNumberEntry {
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support::ulittle32_t Offset; // Offset to start of code bytes for line number
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support::ulittle32_t Flags; // Start:24, End:7, IsStatement:1
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};
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// Corresponds to `CV_Column_t` structure
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struct ColumnNumberEntry {
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support::ulittle16_t StartColumn;
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support::ulittle16_t EndColumn;
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};
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class ModuleSubstream {
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public:
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ModuleSubstream();
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ModuleSubstream(ModuleSubstreamKind Kind, BinaryStreamRef Data);
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static Error initialize(BinaryStreamRef Stream, ModuleSubstream &Info);
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uint32_t getRecordLength() const;
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ModuleSubstreamKind getSubstreamKind() const;
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BinaryStreamRef getRecordData() const;
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private:
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ModuleSubstreamKind Kind;
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BinaryStreamRef Data;
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};
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typedef VarStreamArray<ModuleSubstream> ModuleSubstreamArray;
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} // namespace codeview
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template <> struct VarStreamArrayExtractor<codeview::ModuleSubstream> {
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Error operator()(BinaryStreamRef Stream, uint32_t &Length,
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codeview::ModuleSubstream &Info) const {
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if (auto EC = codeview::ModuleSubstream::initialize(Stream, Info))
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return EC;
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Length = Info.getRecordLength();
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return Error::success();
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}
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};
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} // namespace llvm
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#endif // LLVM_DEBUGINFO_CODEVIEW_MODULESUBSTREAM_H
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