#ifndef CODEGEN_ASMPRINTER_DWARFDEBUG_H__
#define CODEGEN_ASMPRINTER_DWARFDEBUG_H__
-#include "DIE.h"
-#include "DwarfPrinter.h"
#include "llvm/CodeGen/AsmPrinter.h"
-#include "llvm/CodeGen/MachineLocation.h"
-#include "llvm/Analysis/DebugInfo.h"
-#include "llvm/Support/Allocator.h"
-#include "llvm/Support/raw_ostream.h"
+#include "DIE.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/FoldingSet.h"
-#include "llvm/ADT/SmallSet.h"
+#include "llvm/ADT/SmallPtrSet.h"
#include "llvm/ADT/StringMap.h"
#include "llvm/ADT/UniqueVector.h"
-#include <string>
+#include "llvm/Support/Allocator.h"
namespace llvm {
class DbgScope;
class DbgVariable;
class MachineFrameInfo;
+class MachineLocation;
class MachineModuleInfo;
class MCAsmInfo;
-class Timer;
+class DIEAbbrev;
+class DIE;
+class DIEBlock;
+class DIEEntry;
+
+class DIEnumerator;
+class DIDescriptor;
+class DIVariable;
+class DIGlobal;
+class DIGlobalVariable;
+class DISubprogram;
+class DIBasicType;
+class DIDerivedType;
+class DIType;
+class DINameSpace;
+class DISubrange;
+class DICompositeType;
//===----------------------------------------------------------------------===//
/// SrcLineInfo - This class is used to record source line correspondence.
MCSymbol *getLabel() const { return Label; }
};
-class DwarfDebug : public DwarfPrinter {
+class DwarfDebug {
+ /// Asm - Target of Dwarf emission.
+ AsmPrinter *Asm;
+
+ /// MMI - Collected machine module information.
+ MachineModuleInfo *MMI;
+
//===--------------------------------------------------------------------===//
// Attributes used to construct specific Dwarf sections.
//
///
std::vector<std::vector<SrcLineInfo> > SectionSourceLines;
- /// didInitial - Flag to indicate if initial emission has been done.
- ///
- bool didInitial;
-
- /// shouldEmit - Flag to indicate if debug information should be emitted.
- ///
- bool shouldEmit;
-
// CurrentFnDbgScope - Top level scope for the current function.
//
DbgScope *CurrentFnDbgScope;
/// (at the end of the module) as DW_AT_inline.
SmallPtrSet<DIE *, 4> InlinedSubprogramDIEs;
+ /// ContainingTypeMap - This map is used to keep track of subprogram DIEs that
+ /// need DW_AT_containing_type attribute. This attribute points to a DIE that
+ /// corresponds to the MDNode mapped with the subprogram DIE.
DenseMap<DIE *, MDNode *> ContainingTypeMap;
- /// AbstractSubprogramDIEs - Collection of abstruct subprogram DIEs.
- SmallPtrSet<DIE *, 4> AbstractSubprogramDIEs;
-
- /// TopLevelDIEs - Collection of top level DIEs.
- SmallPtrSet<DIE *, 4> TopLevelDIEs;
- SmallVector<DIE *, 4> TopLevelDIEsVector;
-
typedef SmallVector<DbgScope *, 2> ScopeVector;
- typedef DenseMap<const MachineInstr *, ScopeVector>
- InsnToDbgScopeMapTy;
-
- /// DbgScopeBeginMap - Maps instruction with a list of DbgScopes it starts.
- InsnToDbgScopeMapTy DbgScopeBeginMap;
-
- /// DbgScopeEndMap - Maps instruction with a list DbgScopes it ends.
- InsnToDbgScopeMapTy DbgScopeEndMap;
+ SmallPtrSet<const MachineInstr *, 8> InsnsBeginScopeSet;
+ SmallPtrSet<const MachineInstr *, 8> InsnsEndScopeSet;
/// InlineInfo - Keep track of inlined functions and their location. This
/// information is used to populate debug_inlined section.
DenseMap<MDNode*, SmallVector<InlineInfoLabels, 4> > InlineInfo;
SmallVector<MDNode *, 4> InlinedSPNodes;
- /// CompileUnitOffsets - A vector of the offsets of the compile units. This is
- /// used when calculating the "origin" of a concrete instance of an inlined
- /// function.
- DenseMap<CompileUnit *, unsigned> CompileUnitOffsets;
+ /// InsnBeforeLabelMap - Maps instruction with label emitted before
+ /// instruction.
+ DenseMap<const MachineInstr *, MCSymbol *> InsnBeforeLabelMap;
+
+ /// InsnAfterLabelMap - Maps instruction with label emitted after
+ /// instruction.
+ DenseMap<const MachineInstr *, MCSymbol *> InsnAfterLabelMap;
+
+ SmallVector<const MCSymbol *, 8> DebugRangeSymbols;
/// Previous instruction's location information. This is used to determine
/// label location to indicate scope boundries in dwarf debug info.
- mutable const MDNode *PrevDILoc;
+ DebugLoc PrevInstLoc;
+ MCSymbol *PrevLabel;
- /// DebugTimer - Timer for the Dwarf debug writer.
- Timer *DebugTimer;
-
struct FunctionDebugFrameInfo {
unsigned Number;
std::vector<MachineMove> Moves;
std::vector<FunctionDebugFrameInfo> DebugFrames;
+ // Section Symbols: these are assembler temporary labels that are emitted at
+ // the beginning of each supported dwarf section. These are used to form
+ // section offsets and are created by EmitSectionLabels.
+ MCSymbol *DwarfFrameSectionSym, *DwarfInfoSectionSym, *DwarfAbbrevSectionSym;
+ MCSymbol *DwarfStrSectionSym, *TextSectionSym, *DwarfDebugRangeSectionSym;
+
+private:
+
/// getSourceDirectoryAndFileIds - Return the directory and file ids that
/// maps to the source id. Source id starts at 1.
std::pair<unsigned, unsigned>
/// addDIEEntry - Add a DIE attribute data and value.
///
- void addDIEEntry(DIE *Die, unsigned Attribute, unsigned Form, DIE *Entry) {
- Die->addValue(Attribute, Form, createDIEEntry(Entry));
- }
-
+ void addDIEEntry(DIE *Die, unsigned Attribute, unsigned Form, DIE *Entry);
+
/// addBlock - Add block data.
///
void addBlock(DIE *Die, unsigned Attribute, unsigned Form, DIEBlock *Block);
/// getUpdatedDbgScope - Find or create DbgScope assicated with
/// the instruction. Initialize scope and update scope hierarchy.
- DbgScope *getUpdatedDbgScope(MDNode *N, const MachineInstr *MI, MDNode *InlinedAt);
+ DbgScope *getUpdatedDbgScope(MDNode *N, const MachineInstr *MI,
+ MDNode *InlinedAt);
/// createDbgScope - Create DbgScope for the scope.
void createDbgScope(MDNode *Scope, MDNode *InlinedAt);
/// findAbstractVariable - Find abstract variable associated with Var.
DbgVariable *findAbstractVariable(DIVariable &Var, unsigned FrameIdx,
- DILocation &Loc);
+ DebugLoc Loc);
DbgVariable *findAbstractVariable(DIVariable &Var, const MachineInstr *MI,
- DILocation &Loc);
+ DebugLoc Loc);
/// updateSubprogramScopeDIE - Find DIE for the given subprogram and
/// attach appropriate DW_AT_low_pc and DW_AT_high_pc attributes.
/// constructScopeDIE - Construct a DIE for this scope.
DIE *constructScopeDIE(DbgScope *Scope);
- /// emitInitial - Emit initial Dwarf declarations. This is necessary for cc
- /// tools to recognize the object file contains Dwarf information.
- void emitInitial();
+ /// EmitSectionLabels - Emit initial Dwarf sections with a label at
+ /// the start of each one.
+ void EmitSectionLabels();
/// emitDIE - Recusively Emits a debug information entry.
///
/// GetOrCreateSourceID - Look up the source id with the given directory and
/// source file names. If none currently exists, create a new id and insert it
- /// in the SourceIds map. This can update DirectoryNames and SourceFileNames maps
- /// as well.
+ /// in the SourceIds map. This can update DirectoryNames and SourceFileNames
+ /// maps as well.
unsigned GetOrCreateSourceID(StringRef DirName, StringRef FileName);
void constructCompileUnit(MDNode *N);
///
DIType getBlockByrefType(DIType Ty, std::string Name);
+ /// recordSourceLine - Register a source line with debug info. Returns the
+ /// unique label that was emitted and which provides correspondence to
+ /// the source line list.
+ MCSymbol *recordSourceLine(unsigned Line, unsigned Col, MDNode *Scope);
+
+ /// getSourceLineCount - Return the number of source lines in the debug
+ /// info.
+ unsigned getSourceLineCount() const {
+ return Lines.size();
+ }
+
+ /// identifyScopeMarkers() - Indentify instructions that are marking
+ /// beginning of or end of a scope.
+ void identifyScopeMarkers();
+
+ /// extractScopeInformation - Scan machine instructions in this function
+ /// and collect DbgScopes. Return true, if atleast one scope was found.
+ bool extractScopeInformation();
+
+ /// collectVariableInfo - Populate DbgScope entries with variables' info.
+ void collectVariableInfo();
+
public:
//===--------------------------------------------------------------------===//
// Main entry points.
//
- DwarfDebug(raw_ostream &OS, AsmPrinter *A, const MCAsmInfo *T);
- virtual ~DwarfDebug();
-
- /// ShouldEmitDwarfDebug - Returns true if Dwarf debugging declarations should
- /// be emitted.
- bool ShouldEmitDwarfDebug() const { return shouldEmit; }
+ DwarfDebug(AsmPrinter *A, Module *M);
+ ~DwarfDebug();
/// beginModule - Emit all Dwarf sections that should come prior to the
/// content.
- void beginModule(Module *M, MachineModuleInfo *MMI);
+ void beginModule(Module *M);
/// endModule - Emit all Dwarf sections that should come after the content.
///
///
void endFunction(const MachineFunction *MF);
- /// recordSourceLine - Register a source line with debug info. Returns the
- /// unique label that was emitted and which provides correspondence to
- /// the source line list.
- MCSymbol *recordSourceLine(unsigned Line, unsigned Col, MDNode *Scope);
-
- /// getSourceLineCount - Return the number of source lines in the debug
- /// info.
- unsigned getSourceLineCount() const {
- return Lines.size();
- }
-
- /// getOrCreateSourceID - Public version of GetOrCreateSourceID. This can be
- /// timed. Look up the source id with the given directory and source file
- /// names. If none currently exists, create a new id and insert it in the
- /// SourceIds map. This can update DirectoryNames and SourceFileNames maps as
- /// well.
- unsigned getOrCreateSourceID(const std::string &DirName,
- const std::string &FileName);
-
- /// extractScopeInformation - Scan machine instructions in this function
- /// and collect DbgScopes. Return true, if atleast one scope was found.
- bool extractScopeInformation();
-
- /// collectVariableInfo - Populate DbgScope entries with variables' info.
- void collectVariableInfo();
-
/// beginScope - Process beginning of a scope.
void beginScope(const MachineInstr *MI);
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