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40d2ca9f43
There is a lot of duplicate code for printing line info between YAML and the raw output printer. This introduces a base class that can be shared between the two, and makes some minor cleanups in the process. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@301728 91177308-0d34-0410-b5e6-96231b3b80d8
95 lines
3.0 KiB
C++
95 lines
3.0 KiB
C++
//===- ModuleDebugLineFragment.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_MODULEDEBUGLINEFRAGMENT_H
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#define LLVM_DEBUGINFO_CODEVIEW_MODULEDEBUGLINEFRAGMENT_H
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#include "llvm/DebugInfo/CodeView/ModuleDebugFragment.h"
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#include "llvm/Support/BinaryStreamArray.h"
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#include "llvm/Support/BinaryStreamReader.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_DebugSLinesHeader_t` structure.
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struct LineFragmentHeader {
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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 LineBlockFragmentHeader {
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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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struct LineColumnEntry {
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support::ulittle32_t NameIndex;
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FixedStreamArray<LineNumberEntry> LineNumbers;
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FixedStreamArray<ColumnNumberEntry> Columns;
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};
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class LineColumnExtractor {
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public:
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typedef const LineFragmentHeader ContextType;
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static Error extract(BinaryStreamRef Stream, uint32_t &Len,
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LineColumnEntry &Item, const LineFragmentHeader *Header);
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};
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class ModuleDebugLineFragment final : public ModuleDebugFragment {
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friend class LineColumnExtractor;
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typedef VarStreamArray<LineColumnEntry, LineColumnExtractor> LineInfoArray;
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typedef LineInfoArray::Iterator Iterator;
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public:
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ModuleDebugLineFragment();
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static bool classof(const ModuleDebugFragment *S) {
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return S->kind() == ModuleDebugFragmentKind::Lines;
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}
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Error initialize(BinaryStreamReader Reader);
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Iterator begin() const { return LinesAndColumns.begin(); }
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Iterator end() const { return LinesAndColumns.end(); }
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const LineFragmentHeader *header() const { return Header; }
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bool hasColumnInfo() const;
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private:
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const LineFragmentHeader *Header = nullptr;
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LineInfoArray LinesAndColumns;
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};
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}
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}
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#endif
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