#include "llvm/CodeGen/DwarfWriter.h"
+#include "llvm/ADT/FoldingSet.h"
#include "llvm/ADT/StringExtras.h"
+#include "llvm/ADT/UniqueVector.h"
#include "llvm/Module.h"
#include "llvm/Type.h"
#include "llvm/CodeGen/AsmPrinter.h"
#include "llvm/CodeGen/MachineDebugInfo.h"
+#include "llvm/CodeGen/MachineFrameInfo.h"
+#include "llvm/CodeGen/MachineLocation.h"
#include "llvm/Support/Dwarf.h"
#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/DataTypes.h"
#include "llvm/Support/Mangler.h"
+#include "llvm/Target/TargetAsmInfo.h"
+#include "llvm/Target/MRegisterInfo.h"
+#include "llvm/Target/TargetData.h"
#include "llvm/Target/TargetMachine.h"
+#include "llvm/Target/TargetFrameInfo.h"
#include <iostream>
+#include <string>
using namespace llvm;
-using namespace dwarf;
+using namespace llvm::dwarf;
static cl::opt<bool>
DwarfVerbose("dwarf-verbose", cl::Hidden,
- cl::desc("Add comments to Dwarf directives."));
+ cl::desc("Add comments to Dwarf directives."));
namespace llvm {
+
+//===----------------------------------------------------------------------===//
+/// DWLabel - Labels are used to track locations in the assembler file.
+/// Labels appear in the form <prefix>debug_<Tag><Number>, where the tag is a
+/// category of label (Ex. location) and number is a value unique in that
+/// category.
+class DWLabel {
+public:
+ const char *Tag; // Label category tag. Should always be
+ // a staticly declared C string.
+ unsigned Number; // Unique number.
+
+ DWLabel(const char *T, unsigned N) : Tag(T), Number(N) {}
+};
//===----------------------------------------------------------------------===//
-// Forward declarations.
+/// Forward declarations.
//
-class CompileUnit;
class DIE;
//===----------------------------------------------------------------------===//
-// DIEAbbrevData - Dwarf abbreviation data, describes the one attribute of a
-// Dwarf abbreviation.
+/// CompileUnit - This dwarf writer support class manages information associate
+/// with a source file.
+class CompileUnit {
+private:
+ CompileUnitDesc *Desc; // Compile unit debug descriptor.
+ unsigned ID; // File ID for source.
+ DIE *Die; // Compile unit debug information entry.
+ std::map<std::string, DIE *> Globals; // A map of globally visible named
+ // entities for this unit.
+ std::map<DebugInfoDesc *, DIE *> DescToDieMap;
+ // Tracks the mapping of unit level
+ // debug informaton descriptors to debug
+ // information entries.
+
+public:
+ CompileUnit(CompileUnitDesc *CUD, unsigned I, DIE *D)
+ : Desc(CUD)
+ , ID(I)
+ , Die(D)
+ , Globals()
+ , DescToDieMap()
+ {}
+
+ ~CompileUnit();
+
+ // Accessors.
+ CompileUnitDesc *getDesc() const { return Desc; }
+ unsigned getID() const { return ID; }
+ DIE* getDie() const { return Die; }
+ std::map<std::string, DIE *> &getGlobals() { return Globals; }
+
+ /// hasContent - Return true if this compile unit has something to write out.
+ ///
+ bool hasContent() const;
+
+ /// AddGlobal - Add a new global entity to the compile unit.
+ ///
+ void AddGlobal(const std::string &Name, DIE *Die);
+
+ /// getDieMapSlotFor - Returns the debug information entry map slot for the
+ /// specified debug descriptor.
+ DIE *&getDieMapSlotFor(DebugInfoDesc *DD) {
+ return DescToDieMap[DD];
+ }
+};
+
+//===----------------------------------------------------------------------===//
+/// DIEAbbrevData - Dwarf abbreviation data, describes the one attribute of a
+/// Dwarf abbreviation.
class DIEAbbrevData {
private:
unsigned Attribute; // Dwarf attribute code.
, Form(F)
{}
- // Accessors
+ // Accessors.
unsigned getAttribute() const { return Attribute; }
unsigned getForm() const { return Form; }
-
- /// operator== - Used by DIEAbbrev to locate entry.
- ///
- bool operator==(const DIEAbbrevData &DAD) const {
- return Attribute == DAD.Attribute && Form == DAD.Form;
- }
- /// operator!= - Used by DIEAbbrev to locate entry.
- ///
- bool operator!=(const DIEAbbrevData &DAD) const {
- return Attribute != DAD.Attribute || Form != DAD.Form;
- }
-
- /// operator< - Used by DIEAbbrev to locate entry.
+ /// Profile - Used to gather unique data for the abbreviation folding set.
///
- bool operator<(const DIEAbbrevData &DAD) const {
- return Attribute < DAD.Attribute ||
- (Attribute == DAD.Attribute && Form < DAD.Form);
+ void Profile(FoldingSetNodeID &ID) {
+ ID.AddInteger(Attribute);
+ ID.AddInteger(Form);
}
};
//===----------------------------------------------------------------------===//
-// DIEAbbrev - Dwarf abbreviation, describes the organization of a debug
-// information object.
-class DIEAbbrev {
+/// DIEAbbrev - Dwarf abbreviation, describes the organization of a debug
+/// information object.
+class DIEAbbrev : public FoldingSetNode {
private:
+ unsigned Number; // Unique number for abbreviation.
unsigned Tag; // Dwarf tag code.
unsigned ChildrenFlag; // Dwarf children flag.
std::vector<DIEAbbrevData> Data; // Raw data bytes for abbreviation.
public:
DIEAbbrev(unsigned T, unsigned C)
- : Tag(T)
+ : Number(0)
+ , Tag(T)
, ChildrenFlag(C)
, Data()
{}
~DIEAbbrev() {}
- // Accessors
+ // Accessors.
+ unsigned getNumber() const { return Number; }
unsigned getTag() const { return Tag; }
unsigned getChildrenFlag() const { return ChildrenFlag; }
const std::vector<DIEAbbrevData> &getData() const { return Data; }
+ void setNumber(unsigned N) { Number = N; }
void setChildrenFlag(unsigned CF) { ChildrenFlag = CF; }
- /// operator== - Used by UniqueVector to locate entry.
- ///
- bool operator==(const DIEAbbrev &DA) const;
-
- /// operator< - Used by UniqueVector to locate entry.
- ///
- bool operator<(const DIEAbbrev &DA) const;
-
/// AddAttribute - Adds another set of attribute information to the
/// abbreviation.
void AddAttribute(unsigned Attribute, unsigned Form) {
Data.push_back(DIEAbbrevData(Attribute, Form));
}
+ /// AddFirstAttribute - Adds a set of attribute information to the front
+ /// of the abbreviation.
+ void AddFirstAttribute(unsigned Attribute, unsigned Form) {
+ Data.insert(Data.begin(), DIEAbbrevData(Attribute, Form));
+ }
+
+ /// Profile - Used to gather unique data for the abbreviation folding set.
+ ///
+ void Profile(FoldingSetNodeID &ID) {
+ ID.AddInteger(Tag);
+ ID.AddInteger(ChildrenFlag);
+
+ // For each attribute description.
+ for (unsigned i = 0, N = Data.size(); i < N; ++i)
+ Data[i].Profile(ID);
+ }
+
/// Emit - Print the abbreviation using the specified Dwarf writer.
///
- void Emit(const DwarfWriter &DW) const;
+ void Emit(const Dwarf &DW) const;
#ifndef NDEBUG
void print(std::ostream &O);
};
//===----------------------------------------------------------------------===//
-// DIEValue - A debug information entry value.
+/// DIEValue - A debug information entry value.
//
class DIEValue {
public:
isLabel,
isAsIsLabel,
isDelta,
- isEntry
+ isEntry,
+ isBlock
};
unsigned Type; // Type of the value
/// EmitValue - Emit value via the Dwarf writer.
///
- virtual void EmitValue(const DwarfWriter &DW, unsigned Form) const = 0;
+ virtual void EmitValue(const Dwarf &DW, unsigned Form) const = 0;
/// SizeOf - Return the size of a value in bytes.
///
- virtual unsigned SizeOf(const DwarfWriter &DW, unsigned Form) const = 0;
+ virtual unsigned SizeOf(const Dwarf &DW, unsigned Form) const = 0;
};
//===----------------------------------------------------------------------===//
-// DWInteger - An integer value DIE.
-//
+/// DWInteger - An integer value DIE.
+///
class DIEInteger : public DIEValue {
private:
uint64_t Integer;
static bool classof(const DIEInteger *) { return true; }
static bool classof(const DIEValue *I) { return I->Type == isInteger; }
+ /// BestForm - Choose the best form for integer.
+ ///
+ unsigned BestForm(bool IsSigned);
+
/// EmitValue - Emit integer of appropriate size.
///
- virtual void EmitValue(const DwarfWriter &DW, unsigned Form) const;
+ virtual void EmitValue(const Dwarf &DW, unsigned Form) const;
/// SizeOf - Determine size of integer value in bytes.
///
- virtual unsigned SizeOf(const DwarfWriter &DW, unsigned Form) const;
+ virtual unsigned SizeOf(const Dwarf &DW, unsigned Form) const;
};
//===----------------------------------------------------------------------===//
-// DIEString - A string value DIE.
-//
+/// DIEString - A string value DIE.
+///
struct DIEString : public DIEValue {
const std::string String;
/// EmitValue - Emit string value.
///
- virtual void EmitValue(const DwarfWriter &DW, unsigned Form) const;
+ virtual void EmitValue(const Dwarf &DW, unsigned Form) const;
/// SizeOf - Determine size of string value in bytes.
///
- virtual unsigned SizeOf(const DwarfWriter &DW, unsigned Form) const;
+ virtual unsigned SizeOf(const Dwarf &DW, unsigned Form) const;
};
//===----------------------------------------------------------------------===//
-// DIEDwarfLabel - A Dwarf internal label expression DIE.
+/// DIEDwarfLabel - A Dwarf internal label expression DIE.
//
struct DIEDwarfLabel : public DIEValue {
const DWLabel Label;
/// EmitValue - Emit label value.
///
- virtual void EmitValue(const DwarfWriter &DW, unsigned Form) const;
+ virtual void EmitValue(const Dwarf &DW, unsigned Form) const;
/// SizeOf - Determine size of label value in bytes.
///
- virtual unsigned SizeOf(const DwarfWriter &DW, unsigned Form) const;
+ virtual unsigned SizeOf(const Dwarf &DW, unsigned Form) const;
};
//===----------------------------------------------------------------------===//
-// DIEObjectLabel - A label to an object in code or data.
+/// DIEObjectLabel - A label to an object in code or data.
//
struct DIEObjectLabel : public DIEValue {
const std::string Label;
/// EmitValue - Emit label value.
///
- virtual void EmitValue(const DwarfWriter &DW, unsigned Form) const;
+ virtual void EmitValue(const Dwarf &DW, unsigned Form) const;
/// SizeOf - Determine size of label value in bytes.
///
- virtual unsigned SizeOf(const DwarfWriter &DW, unsigned Form) const;
+ virtual unsigned SizeOf(const Dwarf &DW, unsigned Form) const;
};
//===----------------------------------------------------------------------===//
-// DIEDelta - A simple label difference DIE.
-//
+/// DIEDelta - A simple label difference DIE.
+///
struct DIEDelta : public DIEValue {
const DWLabel LabelHi;
const DWLabel LabelLo;
/// EmitValue - Emit delta value.
///
- virtual void EmitValue(const DwarfWriter &DW, unsigned Form) const;
+ virtual void EmitValue(const Dwarf &DW, unsigned Form) const;
/// SizeOf - Determine size of delta value in bytes.
///
- virtual unsigned SizeOf(const DwarfWriter &DW, unsigned Form) const;
+ virtual unsigned SizeOf(const Dwarf &DW, unsigned Form) const;
};
//===----------------------------------------------------------------------===//
-// DIEntry - A pointer to a debug information entry.
-//
+/// DIEntry - A pointer to a debug information entry.
+///
struct DIEntry : public DIEValue {
DIE *Entry;
static bool classof(const DIEntry *) { return true; }
static bool classof(const DIEValue *E) { return E->Type == isEntry; }
- /// EmitValue - Emit delta value.
+ /// EmitValue - Emit debug information entry offset.
///
- virtual void EmitValue(const DwarfWriter &DW, unsigned Form) const;
+ virtual void EmitValue(const Dwarf &DW, unsigned Form) const;
- /// SizeOf - Determine size of delta value in bytes.
+ /// SizeOf - Determine size of debug information entry in bytes.
///
- virtual unsigned SizeOf(const DwarfWriter &DW, unsigned Form) const;
+ virtual unsigned SizeOf(const Dwarf &DW, unsigned Form) const;
};
//===----------------------------------------------------------------------===//
-// DIE - A structured debug information entry. Has an abbreviation which
-// describes it's organization.
+/// DIEBlock - A block of values. Primarily used for location expressions.
+//
+struct DIEBlock : public DIEValue {
+ unsigned Size; // Size in bytes excluding size header.
+ std::vector<unsigned> Forms; // Data forms.
+ std::vector<DIEValue *> Values; // Block values.
+
+ DIEBlock()
+ : DIEValue(isBlock)
+ , Size(0)
+ , Forms()
+ , Values()
+ {}
+ ~DIEBlock();
+
+ // Implement isa/cast/dyncast.
+ static bool classof(const DIEBlock *) { return true; }
+ static bool classof(const DIEValue *E) { return E->Type == isBlock; }
+
+ /// ComputeSize - calculate the size of the block.
+ ///
+ unsigned ComputeSize(Dwarf &DW);
+
+ /// BestForm - Choose the best form for data.
+ ///
+ unsigned BestForm();
+
+ /// EmitValue - Emit block data.
+ ///
+ virtual void EmitValue(const Dwarf &DW, unsigned Form) const;
+
+ /// SizeOf - Determine size of block data in bytes.
+ ///
+ virtual unsigned SizeOf(const Dwarf &DW, unsigned Form) const;
+
+ /// AddUInt - Add an unsigned integer value.
+ ///
+ void AddUInt(unsigned Form, uint64_t Integer);
+
+ /// AddSInt - Add an signed integer value.
+ ///
+ void AddSInt(unsigned Form, int64_t Integer);
+
+ /// AddString - Add a std::string value.
+ ///
+ void AddString(unsigned Form, const std::string &String);
+
+ /// AddLabel - Add a Dwarf label value.
+ ///
+ void AddLabel(unsigned Form, const DWLabel &Label);
+
+ /// AddObjectLabel - Add a non-Dwarf label value.
+ ///
+ void AddObjectLabel(unsigned Form, const std::string &Label);
+
+ /// AddDelta - Add a label delta value.
+ ///
+ void AddDelta(unsigned Form, const DWLabel &Hi, const DWLabel &Lo);
+
+ /// AddDIEntry - Add a DIE value.
+ ///
+ void AddDIEntry(unsigned Form, DIE *Entry);
+
+};
+
+//===----------------------------------------------------------------------===//
+/// DIE - A structured debug information entry. Has an abbreviation which
+/// describes it's organization.
class DIE {
private:
- DIEAbbrev *Abbrev; // Temporary buffer for abbreviation.
- unsigned AbbrevID; // Decribing abbreviation ID.
+ DIEAbbrev Abbrev; // Buffer for constructing abbreviation.
unsigned Offset; // Offset in debug info section.
unsigned Size; // Size of instance + children.
std::vector<DIE *> Children; // Children DIEs.
DIE(unsigned Tag);
~DIE();
- // Accessors
- unsigned getAbbrevID() const { return AbbrevID; }
+ // Accessors.
+ unsigned getAbbrevNumber() const {
+ return Abbrev.getNumber();
+ }
unsigned getOffset() const { return Offset; }
unsigned getSize() const { return Size; }
const std::vector<DIE *> &getChildren() const { return Children; }
/// SiblingOffset - Return the offset of the debug information entry's
/// sibling.
unsigned SiblingOffset() const { return Offset + Size; }
+
+ /// AddSiblingOffset - Add a sibling offset field to the front of the DIE.
+ ///
+ void AddSiblingOffset();
/// AddUInt - Add an unsigned integer attribute data and value.
///
void AddDelta(unsigned Attribute, unsigned Form,
const DWLabel &Hi, const DWLabel &Lo);
- /// AddDIEntry - Add a DIE attribute data and value.
+ /// AddDIEntry - Add a DIE attribute data and value.
///
void AddDIEntry(unsigned Attribute, unsigned Form, DIE *Entry);
+ /// AddBlock - Add block data.
+ ///
+ void AddBlock(unsigned Attribute, unsigned Form, DIEBlock *Block);
+
/// Complete - Indicate that all attributes have been added and
/// ready to get an abbreviation ID.
///
- void Complete(DwarfWriter &DW);
+ void Complete(Dwarf &DW);
/// AddChild - Add a child to the DIE.
void AddChild(DIE *Child);
};
-} // End of namespace llvm
-
//===----------------------------------------------------------------------===//
+/// Dwarf - Emits Dwarf debug and exception handling directives.
+//
+class Dwarf {
-/// operator== - Used by UniqueVector to locate entry.
-///
-bool DIEAbbrev::operator==(const DIEAbbrev &DA) const {
- if (Tag != DA.Tag) return false;
- if (ChildrenFlag != DA.ChildrenFlag) return false;
- if (Data.size() != DA.Data.size()) return false;
+private:
+
+ //===--------------------------------------------------------------------===//
+ // Core attributes used by the Dwarf writer.
+ //
- for (unsigned i = 0, N = Data.size(); i < N; ++i) {
- if (Data[i] != DA.Data[i]) return false;
- }
+ //
+ /// O - Stream to .s file.
+ ///
+ std::ostream &O;
+
+ /// Asm - Target of Dwarf emission.
+ ///
+ AsmPrinter *Asm;
- return true;
-}
+ /// TAI - Target Asm Printer.
+ const TargetAsmInfo *TAI;
+
+ /// TD - Target data.
+ const TargetData *TD;
+
+ /// RI - Register Information.
+ const MRegisterInfo *RI;
+
+ /// M - Current module.
+ ///
+ Module *M;
+
+ /// MF - Current machine function.
+ ///
+ MachineFunction *MF;
+
+ /// DebugInfo - Collected debug information.
+ ///
+ MachineDebugInfo *DebugInfo;
+
+ /// didInitial - Flag to indicate if initial emission has been done.
+ ///
+ bool didInitial;
+
+ /// shouldEmit - Flag to indicate if debug information should be emitted.
+ ///
+ bool shouldEmit;
+
+ /// SubprogramCount - The running count of functions being compiled.
+ ///
+ unsigned SubprogramCount;
+
+ //===--------------------------------------------------------------------===//
+ // Attributes used to construct specific Dwarf sections.
+ //
+
+ /// CompileUnits - All the compile units involved in this build. The index
+ /// of each entry in this vector corresponds to the sources in DebugInfo.
+ std::vector<CompileUnit *> CompileUnits;
+
+ /// AbbreviationsSet - Used to uniquely define the abbreviations.
+ ///
+ FoldingSet<DIEAbbrev> AbbreviationsSet;
-/// operator< - Used by UniqueVector to locate entry.
-///
-bool DIEAbbrev::operator<(const DIEAbbrev &DA) const {
- if (Tag != DA.Tag) return Tag < DA.Tag;
- if (ChildrenFlag != DA.ChildrenFlag) return ChildrenFlag < DA.ChildrenFlag;
- if (Data.size() != DA.Data.size()) return Data.size() < DA.Data.size();
+ /// Abbreviations - A list of all the unique abbreviations in use.
+ ///
+ std::vector<DIEAbbrev *> Abbreviations;
- for (unsigned i = 0, N = Data.size(); i < N; ++i) {
- if (Data[i] != DA.Data[i]) return Data[i] < DA.Data[i];
+ /// StringPool - A UniqueVector of strings used by indirect references.
+ /// UnitMap - Map debug information descriptor to compile unit.
+ ///
+ UniqueVector<std::string> StringPool;
+
+ /// UnitMap - Map debug information descriptor to compile unit.
+ ///
+ std::map<DebugInfoDesc *, CompileUnit *> DescToUnitMap;
+
+ /// DescToDieMap - Tracks the mapping of top level debug informaton
+ /// descriptors to debug information entries.
+ std::map<DebugInfoDesc *, DIE *> DescToDieMap;
+
+ /// SectionMap - Provides a unique id per text section.
+ ///
+ UniqueVector<std::string> SectionMap;
+
+ /// SectionSourceLines - Tracks line numbers per text section.
+ ///
+ std::vector<std::vector<SourceLineInfo> > SectionSourceLines;
+
+
+public:
+
+ //===--------------------------------------------------------------------===//
+ // Emission and print routines
+ //
+
+ /// PrintHex - Print a value as a hexidecimal value.
+ ///
+ void PrintHex(int Value) const;
+
+ /// EOL - Print a newline character to asm stream. If a comment is present
+ /// then it will be printed first. Comments should not contain '\n'.
+ void EOL(const std::string &Comment) const;
+
+ /// EmitAlign - Print a align directive.
+ ///
+ void EmitAlign(unsigned Alignment) const;
+
+ /// EmitULEB128Bytes - Emit an assembler byte data directive to compose an
+ /// unsigned leb128 value.
+ void EmitULEB128Bytes(unsigned Value) const;
+
+ /// EmitSLEB128Bytes - print an assembler byte data directive to compose a
+ /// signed leb128 value.
+ void EmitSLEB128Bytes(int Value) const;
+
+ /// PrintULEB128 - Print a series of hexidecimal values (separated by
+ /// commas) representing an unsigned leb128 value.
+ void PrintULEB128(unsigned Value) const;
+
+ /// SizeULEB128 - Compute the number of bytes required for an unsigned
+ /// leb128 value.
+ static unsigned SizeULEB128(unsigned Value);
+
+ /// PrintSLEB128 - Print a series of hexidecimal values (separated by
+ /// commas) representing a signed leb128 value.
+ void PrintSLEB128(int Value) const;
+
+ /// SizeSLEB128 - Compute the number of bytes required for a signed leb128
+ /// value.
+ static unsigned SizeSLEB128(int Value);
+
+ /// EmitInt8 - Emit a byte directive and value.
+ ///
+ void EmitInt8(int Value) const;
+
+ /// EmitInt16 - Emit a short directive and value.
+ ///
+ void EmitInt16(int Value) const;
+
+ /// EmitInt32 - Emit a long directive and value.
+ ///
+ void EmitInt32(int Value) const;
+
+ /// EmitInt64 - Emit a long long directive and value.
+ ///
+ void EmitInt64(uint64_t Value) const;
+
+ /// EmitString - Emit a string with quotes and a null terminator.
+ /// Special characters are emitted properly.
+ /// \literal (Eg. '\t') \endliteral
+ void EmitString(const std::string &String) const;
+
+ /// PrintLabelName - Print label name in form used by Dwarf writer.
+ ///
+ void PrintLabelName(DWLabel Label) const {
+ PrintLabelName(Label.Tag, Label.Number);
}
+ void PrintLabelName(const char *Tag, unsigned Number) const;
- return false;
-}
+ /// EmitLabel - Emit location label for internal use by Dwarf.
+ ///
+ void EmitLabel(DWLabel Label) const {
+ EmitLabel(Label.Tag, Label.Number);
+ }
+ void EmitLabel(const char *Tag, unsigned Number) const;
+
+ /// EmitReference - Emit a reference to a label.
+ ///
+ void EmitReference(DWLabel Label) const {
+ EmitReference(Label.Tag, Label.Number);
+ }
+ void EmitReference(const char *Tag, unsigned Number) const;
+ void EmitReference(const std::string &Name) const;
+
+ /// EmitDifference - Emit the difference between two labels. Some
+ /// assemblers do not behave with absolute expressions with data directives,
+ /// so there is an option (needsSet) to use an intermediary set expression.
+ void EmitDifference(DWLabel LabelHi, DWLabel LabelLo) const {
+ EmitDifference(LabelHi.Tag, LabelHi.Number, LabelLo.Tag, LabelLo.Number);
+ }
+ void EmitDifference(const char *TagHi, unsigned NumberHi,
+ const char *TagLo, unsigned NumberLo) const;
+
+ /// AssignAbbrevNumber - Define a unique number for the abbreviation.
+ ///
+ void AssignAbbrevNumber(DIEAbbrev *Abbrev);
+
+ /// NewString - Add a string to the constant pool and returns a label.
+ ///
+ DWLabel NewString(const std::string &String);
+
+ /// getDieMapSlotFor - Returns the debug information entry map slot for the
+ /// specified debug descriptor.
+ DIE *&getDieMapSlotFor(DebugInfoDesc *DD);
+
+private:
+
+ /// AddSourceLine - Add location information to specified debug information
+ /// entry.
+ void AddSourceLine(DIE *Die, CompileUnitDesc *File, unsigned Line);
+
+ /// AddAddress - Add an address attribute to a die based on the location
+ /// provided.
+ void AddAddress(DIE *Die, unsigned Attribute,
+ const MachineLocation &Location);
+
+ /// NewType - Create a new type DIE.
+ ///
+ DIE *NewType(DIE *Context, TypeDesc *TyDesc, CompileUnit *Unit);
+
+ /// NewCompileUnit - Create new compile unit and it's die.
+ ///
+ CompileUnit *NewCompileUnit(CompileUnitDesc *UnitDesc, unsigned ID);
+
+ /// FindCompileUnit - Get the compile unit for the given descriptor.
+ ///
+ CompileUnit *FindCompileUnit(CompileUnitDesc *UnitDesc);
+
+ /// NewGlobalVariable - Make a new global variable DIE.
+ ///
+ DIE *NewGlobalVariable(GlobalVariableDesc *GVD);
+
+ /// NewSubprogram - Add a new subprogram DIE.
+ ///
+ DIE *NewSubprogram(SubprogramDesc *SPD);
+
+ /// NewScopeVariable - Create a new scope variable.
+ ///
+ DIE *NewScopeVariable(DebugVariable *DV, CompileUnit *Unit);
+
+ /// ConstructScope - Construct the components of a scope.
+ ///
+ void ConstructScope(DebugScope *ParentScope, DIE *ParentDie,
+ CompileUnit *Unit);
+
+ /// ConstructRootScope - Construct the scope for the subprogram.
+ ///
+ void ConstructRootScope(DebugScope *RootScope);
+
+ /// EmitInitial - Emit initial Dwarf declarations.
+ ///
+ void EmitInitial();
+
+ /// EmitDIE - Recusively Emits a debug information entry.
+ ///
+ void EmitDIE(DIE *Die) const;
+
+ /// SizeAndOffsetDie - Compute the size and offset of a DIE.
+ ///
+ unsigned SizeAndOffsetDie(DIE *Die, unsigned Offset, bool Last);
+
+ /// SizeAndOffsets - Compute the size and offset of all the DIEs.
+ ///
+ void SizeAndOffsets();
+
+ /// EmitFrameMoves - Emit frame instructions to describe the layout of the
+ /// frame.
+ void EmitFrameMoves(const char *BaseLabel, unsigned BaseLabelID,
+ std::vector<MachineMove *> &Moves);
+
+ /// EmitDebugInfo - Emit the debug info section.
+ ///
+ void EmitDebugInfo() const;
+
+ /// EmitAbbreviations - Emit the abbreviation section.
+ ///
+ void EmitAbbreviations() const;
+
+ /// EmitDebugLines - Emit source line information.
+ ///
+ void EmitDebugLines() const;
+
+ /// EmitInitialDebugFrame - Emit common frame info into a debug frame section.
+ ///
+ void EmitInitialDebugFrame();
+ /// EmitFunctionDebugFrame - Emit per function frame info into a debug frame
+ /// section.
+ void EmitFunctionDebugFrame();
+
+ /// EmitDebugPubNames - Emit info into a debug pubnames section.
+ ///
+ void EmitDebugPubNames();
+
+ /// EmitDebugStr - Emit info into a debug str section.
+ ///
+ void EmitDebugStr();
+
+ /// EmitDebugLoc - Emit info into a debug loc section.
+ ///
+ void EmitDebugLoc();
+
+ /// EmitDebugARanges - Emit info into a debug aranges section.
+ ///
+ void EmitDebugARanges();
+
+ /// EmitDebugRanges - Emit info into a debug ranges section.
+ ///
+ void EmitDebugRanges();
+
+ /// EmitDebugMacInfo - Emit info into a debug macinfo section.
+ ///
+ void EmitDebugMacInfo();
+
+ /// ConstructCompileUnitDIEs - Create a compile unit DIE for each source and
+ /// header file.
+ void ConstructCompileUnitDIEs();
+
+ /// ConstructGlobalDIEs - Create DIEs for each of the externally visible
+ /// global variables.
+ void ConstructGlobalDIEs();
+
+ /// ConstructSubprogramDIEs - Create DIEs for each of the externally visible
+ /// subprograms.
+ void ConstructSubprogramDIEs();
+
+ /// ShouldEmitDwarf - Returns true if Dwarf declarations should be made.
+ ///
+ bool ShouldEmitDwarf() const { return shouldEmit; }
+
+public:
+
+ Dwarf(std::ostream &OS, AsmPrinter *A, const TargetAsmInfo *T);
+ virtual ~Dwarf();
+
+ // Accessors.
+ //
+ const TargetAsmInfo *getTargetAsmInfo() const { return TAI; }
+
+ /// SetDebugInfo - Set DebugInfo when it's known that pass manager has
+ /// created it. Set by the target AsmPrinter.
+ void SetDebugInfo(MachineDebugInfo *DI);
+
+ //===--------------------------------------------------------------------===//
+ // Main entry points.
+ //
+
+ /// BeginModule - Emit all Dwarf sections that should come prior to the
+ /// content.
+ void BeginModule(Module *M);
+
+ /// EndModule - Emit all Dwarf sections that should come after the content.
+ ///
+ void EndModule();
+
+ /// BeginFunction - Gather pre-function debug information. Assumes being
+ /// emitted immediately after the function entry point.
+ void BeginFunction(MachineFunction *MF);
+
+ /// EndFunction - Gather and emit post-function debug information.
+ ///
+ void EndFunction();
+};
+
+} // End of namespace llvm
+
+//===----------------------------------------------------------------------===//
+
+CompileUnit::~CompileUnit() {
+ delete Die;
+}
+
+/// hasContent - Return true if this compile unit has something to write out.
+///
+bool CompileUnit::hasContent() const {
+ return !Die->getChildren().empty();
+}
+
+/// AddGlobal - Add a new global entity to the compile unit.
+///
+void CompileUnit::AddGlobal(const std::string &Name, DIE *Die) {
+ Globals[Name] = Die;
+}
+
+//===----------------------------------------------------------------------===//
+
/// Emit - Print the abbreviation using the specified Dwarf writer.
///
-void DIEAbbrev::Emit(const DwarfWriter &DW) const {
+void DIEAbbrev::Emit(const Dwarf &DW) const {
// Emit its Dwarf tag type.
DW.EmitULEB128Bytes(Tag);
DW.EOL(TagString(Tag));
}
#ifndef NDEBUG
- void DIEAbbrev::print(std::ostream &O) {
- O << "Abbreviation @"
- << std::hex << (intptr_t)this << std::dec
+void DIEAbbrev::print(std::ostream &O) {
+ O << "Abbreviation @"
+ << std::hex << (intptr_t)this << std::dec
+ << " "
+ << TagString(Tag)
+ << " "
+ << ChildrenString(ChildrenFlag)
+ << "\n";
+
+ for (unsigned i = 0, N = Data.size(); i < N; ++i) {
+ O << " "
+ << AttributeString(Data[i].getAttribute())
<< " "
- << TagString(Tag)
- << " "
- << ChildrenString(ChildrenFlag)
+ << FormEncodingString(Data[i].getForm())
<< "\n";
-
- for (unsigned i = 0, N = Data.size(); i < N; ++i) {
- O << " "
- << AttributeString(Data[i].getAttribute())
- << " "
- << FormEncodingString(Data[i].getForm())
- << "\n";
- }
}
- void DIEAbbrev::dump() { print(std::cerr); }
+}
+void DIEAbbrev::dump() { print(std::cerr); }
#endif
//===----------------------------------------------------------------------===//
+/// BestForm - Choose the best form for integer.
+///
+unsigned DIEInteger::BestForm(bool IsSigned) {
+ if (IsSigned) {
+ if ((char)Integer == (signed)Integer) return DW_FORM_data1;
+ if ((short)Integer == (signed)Integer) return DW_FORM_data2;
+ if ((int)Integer == (signed)Integer) return DW_FORM_data4;
+ } else {
+ if ((unsigned char)Integer == Integer) return DW_FORM_data1;
+ if ((unsigned short)Integer == Integer) return DW_FORM_data2;
+ if ((unsigned int)Integer == Integer) return DW_FORM_data4;
+ }
+ return DW_FORM_data8;
+}
+
/// EmitValue - Emit integer of appropriate size.
///
-void DIEInteger::EmitValue(const DwarfWriter &DW, unsigned Form) const {
+void DIEInteger::EmitValue(const Dwarf &DW, unsigned Form) const {
switch (Form) {
case DW_FORM_flag: // Fall thru
+ case DW_FORM_ref1: // Fall thru
case DW_FORM_data1: DW.EmitInt8(Integer); break;
+ case DW_FORM_ref2: // Fall thru
case DW_FORM_data2: DW.EmitInt16(Integer); break;
+ case DW_FORM_ref4: // Fall thru
case DW_FORM_data4: DW.EmitInt32(Integer); break;
+ case DW_FORM_ref8: // Fall thru
case DW_FORM_data8: DW.EmitInt64(Integer); break;
case DW_FORM_udata: DW.EmitULEB128Bytes(Integer); break;
case DW_FORM_sdata: DW.EmitSLEB128Bytes(Integer); break;
/// SizeOf - Determine size of integer value in bytes.
///
-unsigned DIEInteger::SizeOf(const DwarfWriter &DW, unsigned Form) const {
+unsigned DIEInteger::SizeOf(const Dwarf &DW, unsigned Form) const {
switch (Form) {
case DW_FORM_flag: // Fall thru
+ case DW_FORM_ref1: // Fall thru
case DW_FORM_data1: return sizeof(int8_t);
+ case DW_FORM_ref2: // Fall thru
case DW_FORM_data2: return sizeof(int16_t);
+ case DW_FORM_ref4: // Fall thru
case DW_FORM_data4: return sizeof(int32_t);
+ case DW_FORM_ref8: // Fall thru
case DW_FORM_data8: return sizeof(int64_t);
case DW_FORM_udata: return DW.SizeULEB128(Integer);
case DW_FORM_sdata: return DW.SizeSLEB128(Integer);
/// EmitValue - Emit string value.
///
-void DIEString::EmitValue(const DwarfWriter &DW, unsigned Form) const {
+void DIEString::EmitValue(const Dwarf &DW, unsigned Form) const {
DW.EmitString(String);
}
/// SizeOf - Determine size of string value in bytes.
///
-unsigned DIEString::SizeOf(const DwarfWriter &DW, unsigned Form) const {
+unsigned DIEString::SizeOf(const Dwarf &DW, unsigned Form) const {
return String.size() + sizeof(char); // sizeof('\0');
}
/// EmitValue - Emit label value.
///
-void DIEDwarfLabel::EmitValue(const DwarfWriter &DW, unsigned Form) const {
+void DIEDwarfLabel::EmitValue(const Dwarf &DW, unsigned Form) const {
DW.EmitReference(Label);
}
/// SizeOf - Determine size of label value in bytes.
///
-unsigned DIEDwarfLabel::SizeOf(const DwarfWriter &DW, unsigned Form) const {
- return DW.getAddressSize();
+unsigned DIEDwarfLabel::SizeOf(const Dwarf &DW, unsigned Form) const {
+ return DW.getTargetAsmInfo()->getAddressSize();
}
//===----------------------------------------------------------------------===//
/// EmitValue - Emit label value.
///
-void DIEObjectLabel::EmitValue(const DwarfWriter &DW, unsigned Form) const {
- DW.EmitInt8(sizeof(int8_t) + DW.getAddressSize());
- DW.EOL("DW_FORM_block1 length");
-
- DW.EmitInt8(DW_OP_addr);
- DW.EOL("DW_OP_addr");
-
+void DIEObjectLabel::EmitValue(const Dwarf &DW, unsigned Form) const {
DW.EmitReference(Label);
}
/// SizeOf - Determine size of label value in bytes.
///
-unsigned DIEObjectLabel::SizeOf(const DwarfWriter &DW, unsigned Form) const {
- return sizeof(int8_t) + sizeof(int8_t) + DW.getAddressSize();
+unsigned DIEObjectLabel::SizeOf(const Dwarf &DW, unsigned Form) const {
+ return DW.getTargetAsmInfo()->getAddressSize();
}
//===----------------------------------------------------------------------===//
/// EmitValue - Emit delta value.
///
-void DIEDelta::EmitValue(const DwarfWriter &DW, unsigned Form) const {
+void DIEDelta::EmitValue(const Dwarf &DW, unsigned Form) const {
DW.EmitDifference(LabelHi, LabelLo);
}
/// SizeOf - Determine size of delta value in bytes.
///
-unsigned DIEDelta::SizeOf(const DwarfWriter &DW, unsigned Form) const {
- return DW.getAddressSize();
+unsigned DIEDelta::SizeOf(const Dwarf &DW, unsigned Form) const {
+ return DW.getTargetAsmInfo()->getAddressSize();
}
//===----------------------------------------------------------------------===//
-/// EmitValue - Emit extry offset.
+/// EmitValue - Emit debug information entry offset.
///
-void DIEntry::EmitValue(const DwarfWriter &DW, unsigned Form) const {
+void DIEntry::EmitValue(const Dwarf &DW, unsigned Form) const {
DW.EmitInt32(Entry->getOffset());
}
-/// SizeOf - Determine size of label value in bytes.
+/// SizeOf - Determine size of debug information entry value in bytes.
///
-unsigned DIEntry::SizeOf(const DwarfWriter &DW, unsigned Form) const {
+unsigned DIEntry::SizeOf(const Dwarf &DW, unsigned Form) const {
return sizeof(int32_t);
}
//===----------------------------------------------------------------------===//
+DIEBlock::~DIEBlock() {
+ for (unsigned i = 0, N = Values.size(); i < N; ++i) {
+ delete Values[i];
+ }
+}
+
+/// ComputeSize - calculate the size of the block.
+///
+unsigned DIEBlock::ComputeSize(Dwarf &DW) {
+ Size = 0;
+ for (unsigned i = 0, N = Values.size(); i < N; ++i) {
+ Size += Values[i]->SizeOf(DW, Forms[i]);
+ }
+ return Size;
+}
+
+/// BestForm - Choose the best form for data.
+///
+unsigned DIEBlock::BestForm() {
+ if ((unsigned char)Size == Size) return DW_FORM_block1;
+ if ((unsigned short)Size == Size) return DW_FORM_block2;
+ if ((unsigned int)Size == Size) return DW_FORM_block4;
+ return DW_FORM_block;
+}
+
+/// EmitValue - Emit block data.
+///
+void DIEBlock::EmitValue(const Dwarf &DW, unsigned Form) const {
+ switch (Form) {
+ case DW_FORM_block1: DW.EmitInt8(Size); break;
+ case DW_FORM_block2: DW.EmitInt16(Size); break;
+ case DW_FORM_block4: DW.EmitInt32(Size); break;
+ case DW_FORM_block: DW.EmitULEB128Bytes(Size); break;
+ default: assert(0 && "Improper form for block"); break;
+ }
+ for (unsigned i = 0, N = Values.size(); i < N; ++i) {
+ DW.EOL("");
+ Values[i]->EmitValue(DW, Forms[i]);
+ }
+}
+
+/// SizeOf - Determine size of block data in bytes.
+///
+unsigned DIEBlock::SizeOf(const Dwarf &DW, unsigned Form) const {
+ switch (Form) {
+ case DW_FORM_block1: return Size + sizeof(int8_t);
+ case DW_FORM_block2: return Size + sizeof(int16_t);
+ case DW_FORM_block4: return Size + sizeof(int32_t);
+ case DW_FORM_block: return Size + DW.SizeULEB128(Size);
+ default: assert(0 && "Improper form for block"); break;
+ }
+ return 0;
+}
+
+/// AddUInt - Add an unsigned integer value.
+///
+void DIEBlock::AddUInt(unsigned Form, uint64_t Integer) {
+ DIEInteger *DI = new DIEInteger(Integer);
+ Values.push_back(DI);
+ if (Form == 0) Form = DI->BestForm(false);
+ Forms.push_back(Form);
+}
+
+/// AddSInt - Add an signed integer value.
+///
+void DIEBlock::AddSInt(unsigned Form, int64_t Integer) {
+ DIEInteger *DI = new DIEInteger(Integer);
+ Values.push_back(DI);
+ if (Form == 0) Form = DI->BestForm(true);
+ Forms.push_back(Form);
+}
+
+/// AddString - Add a std::string value.
+///
+void DIEBlock::AddString(unsigned Form, const std::string &String) {
+ Values.push_back(new DIEString(String));
+ Forms.push_back(Form);
+}
+
+/// AddLabel - Add a Dwarf label value.
+///
+void DIEBlock::AddLabel(unsigned Form, const DWLabel &Label) {
+ Values.push_back(new DIEDwarfLabel(Label));
+ Forms.push_back(Form);
+}
+
+/// AddObjectLabel - Add a non-Dwarf label value.
+///
+void DIEBlock::AddObjectLabel(unsigned Form, const std::string &Label) {
+ Values.push_back(new DIEObjectLabel(Label));
+ Forms.push_back(Form);
+}
+
+/// AddDelta - Add a label delta value.
+///
+void DIEBlock::AddDelta(unsigned Form, const DWLabel &Hi, const DWLabel &Lo) {
+ Values.push_back(new DIEDelta(Hi, Lo));
+ Forms.push_back(Form);
+}
+
+/// AddDIEntry - Add a DIE value.
+///
+void DIEBlock::AddDIEntry(unsigned Form, DIE *Entry) {
+ Values.push_back(new DIEntry(Entry));
+ Forms.push_back(Form);
+}
+
+//===----------------------------------------------------------------------===//
+
DIE::DIE(unsigned Tag)
-: Abbrev(new DIEAbbrev(Tag, DW_CHILDREN_no))
-, AbbrevID(0)
+: Abbrev(Tag, DW_CHILDREN_no)
, Offset(0)
, Size(0)
, Children()
{}
DIE::~DIE() {
- if (Abbrev) delete Abbrev;
-
for (unsigned i = 0, N = Children.size(); i < N; ++i) {
delete Children[i];
}
}
}
+/// AddSiblingOffset - Add a sibling offset field to the front of the DIE.
+///
+void DIE::AddSiblingOffset() {
+ DIEInteger *DI = new DIEInteger(0);
+ Values.insert(Values.begin(), DI);
+ Abbrev.AddFirstAttribute(DW_AT_sibling, DW_FORM_ref4);
+}
+
/// AddUInt - Add an unsigned integer attribute data and value.
///
void DIE::AddUInt(unsigned Attribute, unsigned Form, uint64_t Integer) {
- if (Form == 0) {
- if ((unsigned char)Integer == Integer) Form = DW_FORM_data1;
- else if ((unsigned short)Integer == Integer) Form = DW_FORM_data2;
- else if ((unsigned int)Integer == Integer) Form = DW_FORM_data4;
- else Form = DW_FORM_data8;
- }
- Abbrev->AddAttribute(Attribute, Form);
- Values.push_back(new DIEInteger(Integer));
+ DIEInteger *DI = new DIEInteger(Integer);
+ Values.push_back(DI);
+ if (!Form) Form = DI->BestForm(false);
+ Abbrev.AddAttribute(Attribute, Form);
}
/// AddSInt - Add an signed integer attribute data and value.
///
void DIE::AddSInt(unsigned Attribute, unsigned Form, int64_t Integer) {
- if (Form == 0) {
- if ((char)Integer == Integer) Form = DW_FORM_data1;
- else if ((short)Integer == Integer) Form = DW_FORM_data2;
- else if ((int)Integer == Integer) Form = DW_FORM_data4;
- else Form = DW_FORM_data8;
- }
- Abbrev->AddAttribute(Attribute, Form);
- Values.push_back(new DIEInteger(Integer));
+ DIEInteger *DI = new DIEInteger(Integer);
+ Values.push_back(DI);
+ if (!Form) Form = DI->BestForm(true);
+ Abbrev.AddAttribute(Attribute, Form);
}
/// AddString - Add a std::string attribute data and value.
///
void DIE::AddString(unsigned Attribute, unsigned Form,
const std::string &String) {
- Abbrev->AddAttribute(Attribute, Form);
Values.push_back(new DIEString(String));
+ Abbrev.AddAttribute(Attribute, Form);
}
/// AddLabel - Add a Dwarf label attribute data and value.
///
void DIE::AddLabel(unsigned Attribute, unsigned Form,
const DWLabel &Label) {
- Abbrev->AddAttribute(Attribute, Form);
Values.push_back(new DIEDwarfLabel(Label));
+ Abbrev.AddAttribute(Attribute, Form);
}
/// AddObjectLabel - Add an non-Dwarf label attribute data and value.
///
void DIE::AddObjectLabel(unsigned Attribute, unsigned Form,
const std::string &Label) {
- Abbrev->AddAttribute(Attribute, Form);
Values.push_back(new DIEObjectLabel(Label));
+ Abbrev.AddAttribute(Attribute, Form);
}
/// AddDelta - Add a label delta attribute data and value.
///
void DIE::AddDelta(unsigned Attribute, unsigned Form,
const DWLabel &Hi, const DWLabel &Lo) {
- Abbrev->AddAttribute(Attribute, Form);
Values.push_back(new DIEDelta(Hi, Lo));
+ Abbrev.AddAttribute(Attribute, Form);
}
/// AddDIEntry - Add a DIE attribute data and value.
///
-void DIE::AddDIEntry(unsigned Attribute,
- unsigned Form, DIE *Entry) {
- Abbrev->AddAttribute(Attribute, Form);
+void DIE::AddDIEntry(unsigned Attribute, unsigned Form, DIE *Entry) {
Values.push_back(new DIEntry(Entry));
+ Abbrev.AddAttribute(Attribute, Form);
+}
+
+/// AddBlock - Add block data.
+///
+void DIE::AddBlock(unsigned Attribute, unsigned Form, DIEBlock *Block) {
+ assert(Block->Size && "Block size has not been computed");
+ Values.push_back(Block);
+ if (!Form) Form = Block->BestForm();
+ Abbrev.AddAttribute(Attribute, Form);
}
/// Complete - Indicate that all attributes have been added and ready to get an
/// abbreviation ID.
-void DIE::Complete(DwarfWriter &DW) {
- AbbrevID = DW.NewAbbreviation(Abbrev);
- delete Abbrev;
- Abbrev = NULL;
+void DIE::Complete(Dwarf &DW) {
+ DW.AssignAbbrevNumber(&Abbrev);
}
/// AddChild - Add a child to the DIE.
///
void DIE::AddChild(DIE *Child) {
- assert(Abbrev && "Adding children without an abbreviation");
- Abbrev->setChildrenFlag(DW_CHILDREN_yes);
+ Abbrev.setChildrenFlag(DW_CHILDREN_yes);
Children.push_back(Child);
}
//===----------------------------------------------------------------------===//
-/// DWContext
+/// Dwarf
//===----------------------------------------------------------------------===//
/// PrintHex - Print a value as a hexidecimal value.
///
-void DwarfWriter::PrintHex(int Value) const {
+void Dwarf::PrintHex(int Value) const {
O << "0x" << std::hex << Value << std::dec;
}
/// EOL - Print a newline character to asm stream. If a comment is present
/// then it will be printed first. Comments should not contain '\n'.
-void DwarfWriter::EOL(const std::string &Comment) const {
- if (DwarfVerbose) {
+void Dwarf::EOL(const std::string &Comment) const {
+ if (DwarfVerbose && !Comment.empty()) {
O << "\t"
- << Asm->CommentString
+ << TAI->getCommentString()
<< " "
<< Comment;
}
O << "\n";
}
+/// EmitAlign - Print a align directive.
+///
+void Dwarf::EmitAlign(unsigned Alignment) const {
+ O << TAI->getAlignDirective() << Alignment << "\n";
+}
+
/// EmitULEB128Bytes - Emit an assembler byte data directive to compose an
/// unsigned leb128 value.
-void DwarfWriter::EmitULEB128Bytes(unsigned Value) const {
- if (hasLEB128) {
+void Dwarf::EmitULEB128Bytes(unsigned Value) const {
+ if (TAI->hasLEB128()) {
O << "\t.uleb128\t"
<< Value;
} else {
- O << Asm->Data8bitsDirective;
+ O << TAI->getData8bitsDirective();
PrintULEB128(Value);
}
}
/// EmitSLEB128Bytes - Emit an assembler byte data directive to compose a
/// signed leb128 value.
-void DwarfWriter::EmitSLEB128Bytes(int Value) const {
- if (hasLEB128) {
+void Dwarf::EmitSLEB128Bytes(int Value) const {
+ if (TAI->hasLEB128()) {
O << "\t.sleb128\t"
<< Value;
} else {
- O << Asm->Data8bitsDirective;
+ O << TAI->getData8bitsDirective();
PrintSLEB128(Value);
}
}
/// PrintULEB128 - Print a series of hexidecimal values (separated by commas)
/// representing an unsigned leb128 value.
-void DwarfWriter::PrintULEB128(unsigned Value) const {
+void Dwarf::PrintULEB128(unsigned Value) const {
do {
unsigned Byte = Value & 0x7f;
Value >>= 7;
/// SizeULEB128 - Compute the number of bytes required for an unsigned leb128
/// value.
-unsigned DwarfWriter::SizeULEB128(unsigned Value) {
+unsigned Dwarf::SizeULEB128(unsigned Value) {
unsigned Size = 0;
do {
Value >>= 7;
/// PrintSLEB128 - Print a series of hexidecimal values (separated by commas)
/// representing a signed leb128 value.
-void DwarfWriter::PrintSLEB128(int Value) const {
+void Dwarf::PrintSLEB128(int Value) const {
int Sign = Value >> (8 * sizeof(Value) - 1);
bool IsMore;
/// SizeSLEB128 - Compute the number of bytes required for a signed leb128
/// value.
-unsigned DwarfWriter::SizeSLEB128(int Value) {
+unsigned Dwarf::SizeSLEB128(int Value) {
unsigned Size = 0;
int Sign = Value >> (8 * sizeof(Value) - 1);
bool IsMore;
/// EmitInt8 - Emit a byte directive and value.
///
-void DwarfWriter::EmitInt8(int Value) const {
- O << Asm->Data8bitsDirective;
+void Dwarf::EmitInt8(int Value) const {
+ O << TAI->getData8bitsDirective();
PrintHex(Value & 0xFF);
}
/// EmitInt16 - Emit a short directive and value.
///
-void DwarfWriter::EmitInt16(int Value) const {
- O << Asm->Data16bitsDirective;
+void Dwarf::EmitInt16(int Value) const {
+ O << TAI->getData16bitsDirective();
PrintHex(Value & 0xFFFF);
}
/// EmitInt32 - Emit a long directive and value.
///
-void DwarfWriter::EmitInt32(int Value) const {
- O << Asm->Data32bitsDirective;
+void Dwarf::EmitInt32(int Value) const {
+ O << TAI->getData32bitsDirective();
PrintHex(Value);
}
/// EmitInt64 - Emit a long long directive and value.
///
-void DwarfWriter::EmitInt64(uint64_t Value) const {
- if (Asm->Data64bitsDirective) {
- O << Asm->Data64bitsDirective << "0x" << std::hex << Value << std::dec;
+void Dwarf::EmitInt64(uint64_t Value) const {
+ if (TAI->getData64bitsDirective()) {
+ O << TAI->getData64bitsDirective() << "0x" << std::hex << Value << std::dec;
} else {
- const TargetData &TD = Asm->TM.getTargetData();
-
- if (TD.isBigEndian()) {
+ if (TD->isBigEndian()) {
EmitInt32(unsigned(Value >> 32)); O << "\n";
EmitInt32(unsigned(Value));
} else {
/// EmitString - Emit a string with quotes and a null terminator.
/// Special characters are emitted properly. (Eg. '\t')
-void DwarfWriter::EmitString(const std::string &String) const {
- O << Asm->AsciiDirective
+void Dwarf::EmitString(const std::string &String) const {
+ O << TAI->getAsciiDirective()
<< "\"";
for (unsigned i = 0, N = String.size(); i < N; ++i) {
unsigned char C = String[i];
case '\t': O << "\\t"; break;
default:
O << '\\';
- O << char('0' + (C >> 6));
- O << char('0' + (C >> 3));
- O << char('0' + (C >> 0));
+ O << char('0' + ((C >> 6) & 7));
+ O << char('0' + ((C >> 3) & 7));
+ O << char('0' + ((C >> 0) & 7));
break;
}
} else if (C == '\"') {
/// PrintLabelName - Print label name in form used by Dwarf writer.
///
-void DwarfWriter::PrintLabelName(const char *Tag, unsigned Number) const {
- O << Asm->PrivateGlobalPrefix
+void Dwarf::PrintLabelName(const char *Tag, unsigned Number) const {
+ O << TAI->getPrivateGlobalPrefix()
<< "debug_"
<< Tag;
if (Number) O << Number;
/// EmitLabel - Emit location label for internal use by Dwarf.
///
-void DwarfWriter::EmitLabel(const char *Tag, unsigned Number) const {
+void Dwarf::EmitLabel(const char *Tag, unsigned Number) const {
PrintLabelName(Tag, Number);
O << ":\n";
}
/// EmitReference - Emit a reference to a label.
///
-void DwarfWriter::EmitReference(const char *Tag, unsigned Number) const {
- if (AddressSize == 4)
- O << Asm->Data32bitsDirective;
+void Dwarf::EmitReference(const char *Tag, unsigned Number) const {
+ if (TAI->getAddressSize() == 4)
+ O << TAI->getData32bitsDirective();
else
- O << Asm->Data64bitsDirective;
+ O << TAI->getData64bitsDirective();
PrintLabelName(Tag, Number);
}
-void DwarfWriter::EmitReference(const std::string &Name) const {
- if (AddressSize == 4)
- O << Asm->Data32bitsDirective;
+void Dwarf::EmitReference(const std::string &Name) const {
+ if (TAI->getAddressSize() == 4)
+ O << TAI->getData32bitsDirective();
else
- O << Asm->Data64bitsDirective;
+ O << TAI->getData64bitsDirective();
O << Name;
}
/// EmitDifference - Emit an label difference as sizeof(pointer) value. Some
/// assemblers do not accept absolute expressions with data directives, so there
/// is an option (needsSet) to use an intermediary 'set' expression.
-void DwarfWriter::EmitDifference(const char *TagHi, unsigned NumberHi,
+void Dwarf::EmitDifference(const char *TagHi, unsigned NumberHi,
const char *TagLo, unsigned NumberLo) const {
- if (needsSet) {
+ if (TAI->needsSet()) {
static unsigned SetCounter = 0;
O << "\t.set\t";
PrintLabelName(TagLo, NumberLo);
O << "\n";
- if (AddressSize == sizeof(int32_t))
- O << Asm->Data32bitsDirective;
+ if (TAI->getAddressSize() == sizeof(int32_t))
+ O << TAI->getData32bitsDirective();
else
- O << Asm->Data64bitsDirective;
+ O << TAI->getData64bitsDirective();
PrintLabelName("set", SetCounter);
++SetCounter;
} else {
- if (AddressSize == sizeof(int32_t))
- O << Asm->Data32bitsDirective;
+ if (TAI->getAddressSize() == sizeof(int32_t))
+ O << TAI->getData32bitsDirective();
else
- O << Asm->Data64bitsDirective;
+ O << TAI->getData64bitsDirective();
PrintLabelName(TagHi, NumberHi);
O << "-";
}
}
-/// NewAbbreviation - Add the abbreviation to the Abbreviation vector.
+/// AssignAbbrevNumber - Define a unique number for the abbreviation.
///
-unsigned DwarfWriter::NewAbbreviation(DIEAbbrev *Abbrev) {
- return Abbreviations.insert(*Abbrev);
+void Dwarf::AssignAbbrevNumber(DIEAbbrev *Abbrev) {
+ // Profile the node so that we can make it unique.
+ FoldingSetNodeID ID;
+ Abbrev->Profile(ID);
+
+ // Check the set for priors.
+ DIEAbbrev *InSet = AbbreviationsSet.GetOrInsertNode(Abbrev);
+
+ // If it's newly added.
+ if (InSet == Abbrev) {
+ // Add to abbreviation list.
+ Abbreviations.push_back(Abbrev);
+ // Assign the vector position + 1 as its number.
+ Abbrev->setNumber(Abbreviations.size());
+ } else {
+ // Assign existing abbreviation number.
+ Abbrev->setNumber(InSet->getNumber());
+ }
}
/// NewString - Add a string to the constant pool and returns a label.
///
-DWLabel DwarfWriter::NewString(const std::string &String) {
+DWLabel Dwarf::NewString(const std::string &String) {
unsigned StringID = StringPool.insert(String);
return DWLabel("string", StringID);
}
-/// NewBasicType - Creates a new basic type if necessary, then adds to the
-/// owner.
-/// FIXME - Should never be needed.
-DIE *DwarfWriter::NewBasicType(DIE *Owner, Type *Ty) {
- DIE *&Slot = TypeToDieMap[Ty];
- if (Slot) return Slot;
-
- const char *Name;
- unsigned Size;
- unsigned Encoding = 0;
-
- switch (Ty->getTypeID()) {
- case Type::UByteTyID:
- Name = "unsigned char";
- Size = 1;
- Encoding = DW_ATE_unsigned_char;
- break;
- case Type::SByteTyID:
- Name = "char";
- Size = 1;
- Encoding = DW_ATE_signed_char;
- break;
- case Type::UShortTyID:
- Name = "unsigned short";
- Size = 2;
- Encoding = DW_ATE_unsigned;
- break;
- case Type::ShortTyID:
- Name = "short";
- Size = 2;
- Encoding = DW_ATE_signed;
- break;
- case Type::UIntTyID:
- Name = "unsigned int";
- Size = 4;
- Encoding = DW_ATE_unsigned;
- break;
- case Type::IntTyID:
- Name = "int";
- Size = 4;
- Encoding = DW_ATE_signed;
- break;
- case Type::ULongTyID:
- Name = "unsigned long long";
- Size = 7;
- Encoding = DW_ATE_unsigned;
- break;
- case Type::LongTyID:
- Name = "long long";
- Size = 7;
- Encoding = DW_ATE_signed;
- break;
- case Type::FloatTyID:
- Name = "float";
- Size = 4;
- Encoding = DW_ATE_float;
- break;
- case Type::DoubleTyID:
- Name = "double";
- Size = 8;
- Encoding = DW_ATE_float;
- break;
- default:
- // FIXME - handle more complex types.
- Name = "unknown";
- Size = 1;
- Encoding = DW_ATE_address;
- break;
+/// AddSourceLine - Add location information to specified debug information
+/// entry.
+void Dwarf::AddSourceLine(DIE *Die, CompileUnitDesc *File, unsigned Line){
+ if (File && Line) {
+ CompileUnit *FileUnit = FindCompileUnit(File);
+ unsigned FileID = FileUnit->getID();
+ Die->AddUInt(DW_AT_decl_file, 0, FileID);
+ Die->AddUInt(DW_AT_decl_line, 0, Line);
}
-
- // construct the type DIE.
- Slot = new DIE(DW_TAG_base_type);
- Slot->AddString(DW_AT_name, DW_FORM_string, Name);
- Slot->AddUInt (DW_AT_byte_size, 0, Size);
- Slot->AddUInt (DW_AT_encoding, DW_FORM_data1, Encoding);
-
- // Add to context owner.
- Owner->AddChild(Slot);
-
- return Slot;
}
-/// NewGlobalType - Make the type visible globally using the given name.
-///
-void DwarfWriter::NewGlobalType(const std::string &Name, DIE *Type) {
- assert(!GlobalTypes[Name] && "Duplicate global type");
- GlobalTypes[Name] = Type;
+/// AddAddress - Add an address attribute to a die based on the location
+/// provided.
+void Dwarf::AddAddress(DIE *Die, unsigned Attribute,
+ const MachineLocation &Location) {
+ DIEBlock *Block = new DIEBlock();
+ unsigned Reg = RI->getDwarfRegNum(Location.getRegister());
+
+ if (Location.isRegister()) {
+ if (Reg < 32) {
+ Block->AddUInt(DW_FORM_data1, DW_OP_reg0 + Reg);
+ } else {
+ Block->AddUInt(DW_FORM_data1, DW_OP_regx);
+ Block->AddUInt(DW_FORM_udata, Reg);
+ }
+ } else {
+ if (Reg < 32) {
+ Block->AddUInt(DW_FORM_data1, DW_OP_breg0 + Reg);
+ } else {
+ Block->AddUInt(DW_FORM_data1, DW_OP_bregx);
+ Block->AddUInt(DW_FORM_udata, Reg);
+ }
+ Block->AddUInt(DW_FORM_sdata, Location.getOffset());
+ }
+ Block->ComputeSize(*this);
+ Die->AddBlock(Attribute, 0, Block);
}
-/// NewGlobalEntity - Make the entity visible globally using the given name.
-///
-void DwarfWriter::NewGlobalEntity(const std::string &Name, DIE *Entity) {
- assert(!GlobalEntities[Name] && "Duplicate global variable or function");
- GlobalEntities[Name] = Entity;
+/// getDieMapSlotFor - Returns the debug information entry map slot for the
+/// specified debug descriptor.
+DIE *&Dwarf::getDieMapSlotFor(DebugInfoDesc *DD) {
+ return DescToDieMap[DD];
}
/// NewType - Create a new type DIE.
///
-DIE *DwarfWriter::NewType(DIE *Unit, TypeDesc *TyDesc) {
- // FIXME - hack to get around NULL types short term.
- if (!TyDesc) return NewBasicType(Unit, Type::IntTy);
-
+DIE *Dwarf::NewType(DIE *Context, TypeDesc *TyDesc, CompileUnit *Unit) {
+ if (!TyDesc) {
+ // FIXME - Hack for missing types
+ DIE *Die = new DIE(DW_TAG_base_type);
+ Die->AddUInt(DW_AT_byte_size, 0, 4);
+ Die->AddUInt(DW_AT_encoding, DW_FORM_data1, DW_ATE_signed);
+ Unit->getDie()->AddChild(Die);
+ return Die;
+ }
+
// Check for pre-existence.
- DIE *&Slot = DescToDieMap[TyDesc];
+ DIE *&Slot = Unit->getDieMapSlotFor(TyDesc);
if (Slot) return Slot;
+ // Type DIE result.
+ DIE *Ty = NULL;
+
+ // FIXME - Not sure why programs and variables are coming through here.
+ // Short cut for handling subprogram types (not really a TyDesc.)
+ if (SubprogramDesc *SubprogramTy = dyn_cast<SubprogramDesc>(TyDesc)) {
+ Slot = Ty = new DIE(DW_TAG_pointer_type);
+ Ty->AddUInt(DW_AT_byte_size, 0, TAI->getAddressSize());
+ Ty->AddString(DW_AT_name, DW_FORM_string, SubprogramTy->getName());
+ Context->AddChild(Ty);
+ return Slot;
+ }
+ // Short cut for handling global variable types (not really a TyDesc.)
+ if (GlobalVariableDesc *GlobalVariableTy =
+ dyn_cast<GlobalVariableDesc>(TyDesc)) {
+ Slot = Ty = new DIE(DW_TAG_pointer_type);
+ Ty->AddUInt(DW_AT_byte_size, 0, TAI->getAddressSize());
+ Ty->AddString(DW_AT_name, DW_FORM_string, GlobalVariableTy->getName());
+ Context->AddChild(Ty);
+ return Slot;
+ }
+
// Get core information.
const std::string &Name = TyDesc->getName();
- // FIXME - handle larger sizes.
- unsigned Size = TyDesc->getSize() >> 3;
-
- DIE *Ty = NULL;
+ uint64_t Size = TyDesc->getSize() >> 3;
if (BasicTypeDesc *BasicTy = dyn_cast<BasicTypeDesc>(TyDesc)) {
// Fundamental types like int, float, bool
Slot = Ty = new DIE(DW_TAG_base_type);
unsigned Encoding = BasicTy->getEncoding();
- Ty->AddUInt (DW_AT_encoding, DW_FORM_data1, Encoding);
+ Ty->AddUInt(DW_AT_encoding, DW_FORM_data1, Encoding);
} else if (DerivedTypeDesc *DerivedTy = dyn_cast<DerivedTypeDesc>(TyDesc)) {
- // Determine which derived type.
- unsigned T = 0;
- switch (DerivedTy->getTag()) {
- case DI_TAG_typedef: T = DW_TAG_typedef; break;
- case DI_TAG_pointer: T = DW_TAG_pointer_type; break;
- case DI_TAG_reference: T = DW_TAG_reference_type; break;
- default: assert( 0 && "Unknown tag on derived type");
- }
-
// Create specific DIE.
- Slot = Ty = new DIE(T);
+ Slot = Ty = new DIE(DerivedTy->getTag());
// Map to main type, void will not have a type.
if (TypeDesc *FromTy = DerivedTy->getFromType()) {
- Ty->AddDIEntry(DW_AT_type, DW_FORM_ref4, NewType(Unit, FromTy));
+ Ty->AddDIEntry(DW_AT_type, DW_FORM_ref4,
+ NewType(Context, FromTy, Unit));
+ }
+ } else if (CompositeTypeDesc *CompTy = dyn_cast<CompositeTypeDesc>(TyDesc)) {
+ // Fetch tag
+ unsigned Tag = CompTy->getTag();
+
+ // Create specific DIE.
+ Slot = Ty = Tag == DW_TAG_vector_type ? new DIE(DW_TAG_array_type) :
+ new DIE(Tag);
+
+ std::vector<DebugInfoDesc *> &Elements = CompTy->getElements();
+
+ switch (Tag) {
+ case DW_TAG_vector_type: Ty->AddUInt(DW_AT_GNU_vector, DW_FORM_flag, 1);
+ // Fall thru
+ case DW_TAG_array_type: {
+ // Add element type.
+ if (TypeDesc *FromTy = CompTy->getFromType()) {
+ Ty->AddDIEntry(DW_AT_type, DW_FORM_ref4,
+ NewType(Context, FromTy, Unit));
+ }
+
+ // Don't emit size attribute.
+ Size = 0;
+
+ // Construct an anonymous type for index type.
+ DIE *IndexTy = new DIE(DW_TAG_base_type);
+ IndexTy->AddUInt(DW_AT_byte_size, 0, 4);
+ IndexTy->AddUInt(DW_AT_encoding, DW_FORM_data1, DW_ATE_signed);
+ // Add to context.
+ Context->AddChild(IndexTy);
+
+ // Add subranges to array type.
+ for(unsigned i = 0, N = Elements.size(); i < N; ++i) {
+ SubrangeDesc *SRD = cast<SubrangeDesc>(Elements[i]);
+ int64_t Lo = SRD->getLo();
+ int64_t Hi = SRD->getHi();
+ DIE *Subrange = new DIE(DW_TAG_subrange_type);
+
+ // If a range is available.
+ if (Lo != Hi) {
+ Subrange->AddDIEntry(DW_AT_type, DW_FORM_ref4, IndexTy);
+ // Only add low if non-zero.
+ if (Lo) Subrange->AddSInt(DW_AT_lower_bound, 0, Lo);
+ Subrange->AddSInt(DW_AT_upper_bound, 0, Hi);
+ }
+ Ty->AddChild(Subrange);
+ }
+
+ break;
+ }
+ case DW_TAG_structure_type:
+ case DW_TAG_union_type: {
+ // Add elements to structure type.
+ for(unsigned i = 0, N = Elements.size(); i < N; ++i) {
+ DebugInfoDesc *Element = Elements[i];
+
+ if (DerivedTypeDesc *MemberDesc = dyn_cast<DerivedTypeDesc>(Element)) {
+ // Add field or base class.
+
+ unsigned Tag = MemberDesc->getTag();
+
+ // Extract the basic information.
+ const std::string &Name = MemberDesc->getName();
+ TypeDesc *MemTy = MemberDesc->getFromType();
+ uint64_t Size = MemberDesc->getSize();
+ uint64_t Align = MemberDesc->getAlign();
+ uint64_t Offset = MemberDesc->getOffset();
+
+ // Construct member debug information entry.
+ DIE *Member = new DIE(Tag);
+
+ // Add name if not "".
+ if (!Name.empty())Member->AddString(DW_AT_name, DW_FORM_string, Name);
+ // Add location if available.
+ AddSourceLine(Member, MemberDesc->getFile(), MemberDesc->getLine());
+
+ // Most of the time the field info is the same as the members.
+ uint64_t FieldSize = Size;
+ uint64_t FieldAlign = Align;
+ uint64_t FieldOffset = Offset;
+
+ if (TypeDesc *FromTy = MemberDesc->getFromType()) {
+ Member->AddDIEntry(DW_AT_type, DW_FORM_ref4,
+ NewType(Context, FromTy, Unit));
+ FieldSize = FromTy->getSize();
+ FieldAlign = FromTy->getSize();
+ }
+
+ // Unless we have a bit field.
+ if (Tag == DW_TAG_member && FieldSize != Size) {
+ // Construct the alignment mask.
+ uint64_t AlignMask = ~(FieldAlign - 1);
+ // Determine the high bit + 1 of the declared size.
+ uint64_t HiMark = (Offset + FieldSize) & AlignMask;
+ // Work backwards to determine the base offset of the field.
+ FieldOffset = HiMark - FieldSize;
+ // Now normalize offset to the field.
+ Offset -= FieldOffset;
+
+ // Maybe we need to work from the other end.
+ if (TD->isLittleEndian()) Offset = FieldSize - (Offset + Size);
+
+ // Add size and offset.
+ Member->AddUInt(DW_AT_byte_size, 0, FieldSize >> 3);
+ Member->AddUInt(DW_AT_bit_size, 0, Size);
+ Member->AddUInt(DW_AT_bit_offset, 0, Offset);
+ }
+
+ // Add computation for offset.
+ DIEBlock *Block = new DIEBlock();
+ Block->AddUInt(DW_FORM_data1, DW_OP_plus_uconst);
+ Block->AddUInt(DW_FORM_udata, FieldOffset >> 3);
+ Block->ComputeSize(*this);
+ Member->AddBlock(DW_AT_data_member_location, 0, Block);
+
+ // Add accessibility (public default unless is base class.
+ if (MemberDesc->isProtected()) {
+ Member->AddUInt(DW_AT_accessibility, 0, DW_ACCESS_protected);
+ } else if (MemberDesc->isPrivate()) {
+ Member->AddUInt(DW_AT_accessibility, 0, DW_ACCESS_private);
+ } else if (Tag == DW_TAG_inheritance) {
+ Member->AddUInt(DW_AT_accessibility, 0, DW_ACCESS_public);
+ }
+
+ Ty->AddChild(Member);
+ } else if (GlobalVariableDesc *StaticDesc =
+ dyn_cast<GlobalVariableDesc>(Element)) {
+ // Add static member.
+
+ // Construct member debug information entry.
+ DIE *Static = new DIE(DW_TAG_variable);
+
+ // Add name and mangled name.
+ const std::string &Name = StaticDesc->getDisplayName();
+ const std::string &MangledName = StaticDesc->getName();
+ Static->AddString(DW_AT_name, DW_FORM_string, Name);
+ Static->AddString(DW_AT_MIPS_linkage_name, DW_FORM_string,
+ MangledName);
+
+ // Add location.
+ AddSourceLine(Static, StaticDesc->getFile(), StaticDesc->getLine());
+
+ // Add type.
+ if (TypeDesc *StaticTy = StaticDesc->getType()) {
+ Static->AddDIEntry(DW_AT_type, DW_FORM_ref4,
+ NewType(Context, StaticTy, Unit));
+ }
+
+ // Add flags.
+ Static->AddUInt(DW_AT_external, DW_FORM_flag, 1);
+ Static->AddUInt(DW_AT_declaration, DW_FORM_flag, 1);
+
+ Ty->AddChild(Static);
+ } else if (SubprogramDesc *MethodDesc =
+ dyn_cast<SubprogramDesc>(Element)) {
+ // Add member function.
+
+ // Construct member debug information entry.
+ DIE *Method = new DIE(DW_TAG_subprogram);
+
+ // Add name and mangled name.
+ const std::string &Name = MethodDesc->getDisplayName();
+ const std::string &MangledName = MethodDesc->getName();
+ bool IsCTor = false;
+
+ if (Name.empty()) {
+ Method->AddString(DW_AT_name, DW_FORM_string, MangledName);
+ IsCTor = TyDesc->getName() == MangledName;
+ } else {
+ Method->AddString(DW_AT_name, DW_FORM_string, Name);
+ Method->AddString(DW_AT_MIPS_linkage_name, DW_FORM_string,
+ MangledName);
+ }
+
+ // Add location.
+ AddSourceLine(Method, MethodDesc->getFile(), MethodDesc->getLine());
+
+ // Add type.
+ if (CompositeTypeDesc *MethodTy =
+ dyn_cast_or_null<CompositeTypeDesc>(MethodDesc->getType())) {
+ // Get argument information.
+ std::vector<DebugInfoDesc *> &Args = MethodTy->getElements();
+
+ // If not a ctor.
+ if (!IsCTor) {
+ // Add return type.
+ Method->AddDIEntry(DW_AT_type, DW_FORM_ref4,
+ NewType(Context, dyn_cast<TypeDesc>(Args[0]),
+ Unit));
+ }
+
+ // Add arguments.
+ for(unsigned i = 1, N = Args.size(); i < N; ++i) {
+ DIE *Arg = new DIE(DW_TAG_formal_parameter);
+ Arg->AddDIEntry(DW_AT_type, DW_FORM_ref4,
+ NewType(Context, cast<TypeDesc>(Args[i]), Unit));
+ Arg->AddUInt(DW_AT_artificial, DW_FORM_flag, 1);
+ Method->AddChild(Arg);
+ }
+ }
+
+ // Add flags.
+ Method->AddUInt(DW_AT_external, DW_FORM_flag, 1);
+ Method->AddUInt(DW_AT_declaration, DW_FORM_flag, 1);
+
+ Ty->AddChild(Method);
+ }
+ }
+ break;
+ }
+ case DW_TAG_enumeration_type: {
+ // Add enumerators to enumeration type.
+ for(unsigned i = 0, N = Elements.size(); i < N; ++i) {
+ EnumeratorDesc *ED = cast<EnumeratorDesc>(Elements[i]);
+ const std::string &Name = ED->getName();
+ int64_t Value = ED->getValue();
+ DIE *Enumerator = new DIE(DW_TAG_enumerator);
+ Enumerator->AddString(DW_AT_name, DW_FORM_string, Name);
+ Enumerator->AddSInt(DW_AT_const_value, DW_FORM_sdata, Value);
+ Ty->AddChild(Enumerator);
+ }
+
+ break;
+ }
+ case DW_TAG_subroutine_type: {
+ // Add prototype flag.
+ Ty->AddUInt(DW_AT_prototyped, DW_FORM_flag, 1);
+ // Add return type.
+ Ty->AddDIEntry(DW_AT_type, DW_FORM_ref4,
+ NewType(Context, dyn_cast<TypeDesc>(Elements[0]), Unit));
+
+ // Add arguments.
+ for(unsigned i = 1, N = Elements.size(); i < N; ++i) {
+ DIE *Arg = new DIE(DW_TAG_formal_parameter);
+ Arg->AddDIEntry(DW_AT_type, DW_FORM_ref4,
+ NewType(Context, cast<TypeDesc>(Elements[i]), Unit));
+ Ty->AddChild(Arg);
+ }
+
+ break;
+ }
+ default: break;
}
}
-
+
assert(Ty && "Type not supported yet");
// Add size if non-zero (derived types don't have a size.)
if (Size) Ty->AddUInt(DW_AT_byte_size, 0, Size);
// Add name if not anonymous or intermediate type.
if (!Name.empty()) Ty->AddString(DW_AT_name, DW_FORM_string, Name);
- // Add source line info if present.
- if (CompileUnitDesc *File = TyDesc->getFile()) {
- unsigned FileID = DebugInfo->RecordSource(File);
- int Line = TyDesc->getLine();
- Ty->AddUInt(DW_AT_decl_file, 0, FileID);
- Ty->AddUInt(DW_AT_decl_line, 0, Line);
- }
+ // Add source line info if available.
+ AddSourceLine(Ty, TyDesc->getFile(), TyDesc->getLine());
// Add to context owner.
- Unit->AddChild(Ty);
+ Context->AddChild(Ty);
return Slot;
}
-/// NewCompileUnit - Create new compile unit DIE.
+/// NewCompileUnit - Create new compile unit and it's debug information entry.
///
-DIE *DwarfWriter::NewCompileUnit(CompileUnitDesc *CompileUnit) {
- // Check for pre-existence.
- DIE *&Slot = DescToDieMap[CompileUnit];
- if (Slot) return Slot;
-
- DIE *Unit = new DIE(DW_TAG_compile_unit);
- // FIXME - use the correct line set.
- Unit->AddLabel (DW_AT_stmt_list, DW_FORM_data4, DWLabel("section_line", 0));
- Unit->AddLabel (DW_AT_high_pc, DW_FORM_addr, DWLabel("text_end", 0));
- Unit->AddLabel (DW_AT_low_pc, DW_FORM_addr, DWLabel("text_begin", 0));
- Unit->AddString(DW_AT_producer, DW_FORM_string, CompileUnit->getProducer());
- Unit->AddUInt (DW_AT_language, DW_FORM_data1, CompileUnit->getLanguage());
- Unit->AddString(DW_AT_name, DW_FORM_string, CompileUnit->getFileName());
- Unit->AddString(DW_AT_comp_dir, DW_FORM_string, CompileUnit->getDirectory());
-
- Slot = Unit;
+CompileUnit *Dwarf::NewCompileUnit(CompileUnitDesc *UnitDesc,
+ unsigned ID) {
+ // Construct debug information entry.
+ DIE *Die = new DIE(DW_TAG_compile_unit);
+ Die->AddDelta (DW_AT_stmt_list, DW_FORM_data4, DWLabel("section_line", 0),
+ DWLabel("section_line", 0));
+// Die->AddLabel (DW_AT_high_pc, DW_FORM_addr, DWLabel("text_end", 0));
+// Die->AddLabel (DW_AT_low_pc, DW_FORM_addr, DWLabel("text_begin", 0));
+ Die->AddString(DW_AT_producer, DW_FORM_string, UnitDesc->getProducer());
+ Die->AddUInt (DW_AT_language, DW_FORM_data1, UnitDesc->getLanguage());
+ Die->AddString(DW_AT_name, DW_FORM_string, UnitDesc->getFileName());
+ Die->AddString(DW_AT_comp_dir, DW_FORM_string, UnitDesc->getDirectory());
+
+ // Add debug information entry to descriptor map.
+ DIE *&Slot = getDieMapSlotFor(UnitDesc);
+ Slot = Die;
+
+ // Construct compile unit.
+ CompileUnit *Unit = new CompileUnit(UnitDesc, ID, Die);
+
+ // Add Unit to compile unit map.
+ DescToUnitMap[UnitDesc] = Unit;
return Unit;
}
+/// FindCompileUnit - Get the compile unit for the given descriptor.
+///
+CompileUnit *Dwarf::FindCompileUnit(CompileUnitDesc *UnitDesc) {
+ CompileUnit *Unit = DescToUnitMap[UnitDesc];
+ assert(Unit && "Missing compile unit.");
+ return Unit;
+}
+
/// NewGlobalVariable - Add a new global variable DIE.
///
-DIE *DwarfWriter::NewGlobalVariable(GlobalVariableDesc *GVD) {
+DIE *Dwarf::NewGlobalVariable(GlobalVariableDesc *GVD) {
+ // Get the compile unit context.
+ CompileUnitDesc *UnitDesc = static_cast<CompileUnitDesc *>(GVD->getContext());
+ CompileUnit *Unit = FindCompileUnit(UnitDesc);
+
// Check for pre-existence.
- DIE *&Slot = DescToDieMap[GVD];
+ DIE *&Slot = Unit->getDieMapSlotFor(GVD);
if (Slot) return Slot;
- // Get the compile unit context.
- CompileUnitDesc *CompileUnit =
- static_cast<CompileUnitDesc *>(GVD->getContext());
- DIE *Unit = NewCompileUnit(CompileUnit);
// Get the global variable itself.
GlobalVariable *GV = GVD->getGlobalVariable();
- // Generate the mangled name.
- std::string MangledName = Asm->Mang->getValueName(GV);
- // Gather the details (simplify add attribute code.)
- const std::string &Name = GVD->getName();
- unsigned FileID = DebugInfo->RecordSource(CompileUnit);
- unsigned Line = GVD->getLine();
-
+ const std::string &Name = GVD->hasMangledName() ? GVD->getDisplayName()
+ : GVD->getName();
+ const std::string &MangledName = GVD->hasMangledName() ? GVD->getName()
+ : "";
// Get the global's type.
- DIE *Type = NewType(Unit, GVD->getTypeDesc());
+ DIE *Type = NewType(Unit->getDie(), GVD->getType(), Unit);
// Create the globale variable DIE.
DIE *VariableDie = new DIE(DW_TAG_variable);
- VariableDie->AddString (DW_AT_name, DW_FORM_string, Name);
- VariableDie->AddUInt (DW_AT_decl_file, 0, FileID);
- VariableDie->AddUInt (DW_AT_decl_line, 0, Line);
- VariableDie->AddDIEntry (DW_AT_type, DW_FORM_ref4, Type);
- VariableDie->AddUInt (DW_AT_external, DW_FORM_flag, 1);
- // FIXME - needs to be a proper expression.
- VariableDie->AddObjectLabel(DW_AT_location, DW_FORM_block1, MangledName);
+ VariableDie->AddString(DW_AT_name, DW_FORM_string, Name);
+ if (!MangledName.empty()) {
+ VariableDie->AddString(DW_AT_MIPS_linkage_name, DW_FORM_string,
+ MangledName);
+ }
+ VariableDie->AddDIEntry(DW_AT_type, DW_FORM_ref4, Type);
+ VariableDie->AddUInt(DW_AT_external, DW_FORM_flag, 1);
+
+ // Add source line info if available.
+ AddSourceLine(VariableDie, UnitDesc, GVD->getLine());
+
+ // Work up linkage name.
+ const std::string LinkageName = Asm->getGlobalLinkName(GV);
+
+ // Add address.
+ DIEBlock *Block = new DIEBlock();
+ Block->AddUInt(DW_FORM_data1, DW_OP_addr);
+ Block->AddObjectLabel(DW_FORM_udata, LinkageName);
+ Block->ComputeSize(*this);
+ VariableDie->AddBlock(DW_AT_location, 0, Block);
// Add to map.
Slot = VariableDie;
// Add to context owner.
- Unit->AddChild(VariableDie);
+ Unit->getDie()->AddChild(VariableDie);
// Expose as global.
- NewGlobalEntity(Name, VariableDie);
+ // FIXME - need to check external flag.
+ Unit->AddGlobal(Name, VariableDie);
return VariableDie;
}
/// NewSubprogram - Add a new subprogram DIE.
///
-DIE *DwarfWriter::NewSubprogram(SubprogramDesc *SPD) {
+DIE *Dwarf::NewSubprogram(SubprogramDesc *SPD) {
+ // Get the compile unit context.
+ CompileUnitDesc *UnitDesc = static_cast<CompileUnitDesc *>(SPD->getContext());
+ CompileUnit *Unit = FindCompileUnit(UnitDesc);
+
// Check for pre-existence.
- DIE *&Slot = DescToDieMap[SPD];
+ DIE *&Slot = Unit->getDieMapSlotFor(SPD);
if (Slot) return Slot;
- // Get the compile unit context.
- CompileUnitDesc *CompileUnit =
- static_cast<CompileUnitDesc *>(SPD->getContext());
- DIE *Unit = NewCompileUnit(CompileUnit);
-
// Gather the details (simplify add attribute code.)
- const std::string &Name = SPD->getName();
- unsigned FileID = DebugInfo->RecordSource(CompileUnit);
- // FIXME - faking the line for the time being.
- unsigned Line = 1;
-
- // FIXME - faking the type for the time being.
- DIE *Type = NewBasicType(Unit, Type::IntTy);
+ const std::string &Name = SPD->hasMangledName() ? SPD->getDisplayName()
+ : SPD->getName();
+ const std::string &MangledName = SPD->hasMangledName() ? SPD->getName()
+ : "";
+ DIE *Type = NewType(Unit->getDie(), SPD->getType(), Unit);
+ unsigned IsExternal = SPD->isStatic() ? 0 : 1;
- DIE *SubprogramDie = new DIE(DW_TAG_variable);
- SubprogramDie->AddString (DW_AT_name, DW_FORM_string, Name);
- SubprogramDie->AddUInt (DW_AT_decl_file, 0, FileID);
- SubprogramDie->AddUInt (DW_AT_decl_line, 0, Line);
- SubprogramDie->AddDIEntry (DW_AT_type, DW_FORM_ref4, Type);
- SubprogramDie->AddUInt (DW_AT_external, DW_FORM_flag, 1);
+ DIE *SubprogramDie = new DIE(DW_TAG_subprogram);
+ SubprogramDie->AddString(DW_AT_name, DW_FORM_string, Name);
+ if (!MangledName.empty()) {
+ SubprogramDie->AddString(DW_AT_MIPS_linkage_name, DW_FORM_string,
+ MangledName);
+ }
+ if (Type) {
+ SubprogramDie->AddDIEntry(DW_AT_type, DW_FORM_ref4, Type);
+ }
+ SubprogramDie->AddUInt(DW_AT_external, DW_FORM_flag, IsExternal);
+ SubprogramDie->AddUInt(DW_AT_prototyped, DW_FORM_flag, 1);
+ // Add source line info if available.
+ AddSourceLine(SubprogramDie, UnitDesc, SPD->getLine());
+
// Add to map.
Slot = SubprogramDie;
// Add to context owner.
- Unit->AddChild(SubprogramDie);
+ Unit->getDie()->AddChild(SubprogramDie);
// Expose as global.
- NewGlobalEntity(Name, SubprogramDie);
+ Unit->AddGlobal(Name, SubprogramDie);
return SubprogramDie;
}
+/// NewScopeVariable - Create a new scope variable.
+///
+DIE *Dwarf::NewScopeVariable(DebugVariable *DV, CompileUnit *Unit) {
+ // Get the descriptor.
+ VariableDesc *VD = DV->getDesc();
+
+ // Translate tag to proper Dwarf tag. The result variable is dropped for now.
+ unsigned Tag;
+ switch (VD->getTag()) {
+ case DW_TAG_return_variable: return NULL;
+ case DW_TAG_arg_variable: Tag = DW_TAG_formal_parameter; break;
+ case DW_TAG_auto_variable: // fall thru
+ default: Tag = DW_TAG_variable; break;
+ }
+
+ // Define variable debug information entry.
+ DIE *VariableDie = new DIE(Tag);
+ VariableDie->AddString(DW_AT_name, DW_FORM_string, VD->getName());
+
+ // Add source line info if available.
+ AddSourceLine(VariableDie, VD->getFile(), VD->getLine());
+
+ // Add variable type.
+ DIE *Type = NewType(Unit->getDie(), VD->getType(), Unit);
+ VariableDie->AddDIEntry(DW_AT_type, DW_FORM_ref4, Type);
+
+ // Add variable address.
+ MachineLocation Location;
+ RI->getLocation(*MF, DV->getFrameIndex(), Location);
+ AddAddress(VariableDie, DW_AT_location, Location);
+
+ return VariableDie;
+}
+
+/// ConstructScope - Construct the components of a scope.
+///
+void Dwarf::ConstructScope(DebugScope *ParentScope,
+ DIE *ParentDie, CompileUnit *Unit) {
+ // Add variables to scope.
+ std::vector<DebugVariable *> &Variables = ParentScope->getVariables();
+ for (unsigned i = 0, N = Variables.size(); i < N; ++i) {
+ DIE *VariableDie = NewScopeVariable(Variables[i], Unit);
+ if (VariableDie) ParentDie->AddChild(VariableDie);
+ }
+
+ // Add nested scopes.
+ std::vector<DebugScope *> &Scopes = ParentScope->getScopes();
+ for (unsigned j = 0, M = Scopes.size(); j < M; ++j) {
+ // Define the Scope debug information entry.
+ DebugScope *Scope = Scopes[j];
+ // FIXME - Ignore inlined functions for the time being.
+ if (!Scope->getParent()) continue;
+
+ unsigned StartID = Scope->getStartLabelID();
+ unsigned EndID = Scope->getEndLabelID();
+
+ // Throw out scope if block is discarded.
+ if (StartID && !DebugInfo->isLabelValid(StartID)) continue;
+ if (EndID && !DebugInfo->isLabelValid(EndID)) continue;
+
+ DIE *ScopeDie = new DIE(DW_TAG_lexical_block);
+
+ // Add the scope bounds.
+ if (StartID) {
+ ScopeDie->AddLabel(DW_AT_low_pc, DW_FORM_addr,
+ DWLabel("loc", StartID));
+ } else {
+ ScopeDie->AddLabel(DW_AT_low_pc, DW_FORM_addr,
+ DWLabel("func_begin", SubprogramCount));
+ }
+ if (EndID) {
+ ScopeDie->AddLabel(DW_AT_high_pc, DW_FORM_addr,
+ DWLabel("loc", EndID));
+ } else {
+ ScopeDie->AddLabel(DW_AT_high_pc, DW_FORM_addr,
+ DWLabel("func_end", SubprogramCount));
+ }
+
+ // Add the scope contents.
+ ConstructScope(Scope, ScopeDie, Unit);
+ ParentDie->AddChild(ScopeDie);
+ }
+}
+
+/// ConstructRootScope - Construct the scope for the subprogram.
+///
+void Dwarf::ConstructRootScope(DebugScope *RootScope) {
+ // Exit if there is no root scope.
+ if (!RootScope) return;
+
+ // Get the subprogram debug information entry.
+ SubprogramDesc *SPD = cast<SubprogramDesc>(RootScope->getDesc());
+
+ // Get the compile unit context.
+ CompileUnitDesc *UnitDesc = static_cast<CompileUnitDesc *>(SPD->getContext());
+ CompileUnit *Unit = FindCompileUnit(UnitDesc);
+
+ // Get the subprogram die.
+ DIE *SPDie = Unit->getDieMapSlotFor(SPD);
+ assert(SPDie && "Missing subprogram descriptor");
+
+ // Add the function bounds.
+ SPDie->AddLabel(DW_AT_low_pc, DW_FORM_addr,
+ DWLabel("func_begin", SubprogramCount));
+ SPDie->AddLabel(DW_AT_high_pc, DW_FORM_addr,
+ DWLabel("func_end", SubprogramCount));
+ MachineLocation Location(RI->getFrameRegister(*MF));
+ AddAddress(SPDie, DW_AT_frame_base, Location);
+
+ ConstructScope(RootScope, SPDie, Unit);
+}
+
/// EmitInitial - Emit initial Dwarf declarations. This is necessary for cc
/// tools to recognize the object file contains Dwarf information.
///
-void DwarfWriter::EmitInitial() const {
+void Dwarf::EmitInitial() {
+ // Check to see if we already emitted intial headers.
+ if (didInitial) return;
+ didInitial = true;
+
// Dwarf sections base addresses.
- Asm->SwitchSection(DwarfFrameSection, 0);
- EmitLabel("section_frame", 0);
- Asm->SwitchSection(DwarfInfoSection, 0);
+ if (TAI->getDwarfRequiresFrameSection()) {
+ Asm->SwitchToDataSection(TAI->getDwarfFrameSection(), 0);
+ EmitLabel("section_frame", 0);
+ }
+ Asm->SwitchToDataSection(TAI->getDwarfInfoSection(), 0);
EmitLabel("section_info", 0);
- EmitLabel("info", 0);
- Asm->SwitchSection(DwarfAbbrevSection, 0);
+ Asm->SwitchToDataSection(TAI->getDwarfAbbrevSection(), 0);
EmitLabel("section_abbrev", 0);
- EmitLabel("abbrev", 0);
- Asm->SwitchSection(DwarfARangesSection, 0);
+ Asm->SwitchToDataSection(TAI->getDwarfARangesSection(), 0);
EmitLabel("section_aranges", 0);
- Asm->SwitchSection(DwarfMacInfoSection, 0);
+ Asm->SwitchToDataSection(TAI->getDwarfMacInfoSection(), 0);
EmitLabel("section_macinfo", 0);
- Asm->SwitchSection(DwarfLineSection, 0);
+ Asm->SwitchToDataSection(TAI->getDwarfLineSection(), 0);
EmitLabel("section_line", 0);
- EmitLabel("line", 0);
- Asm->SwitchSection(DwarfLocSection, 0);
+ Asm->SwitchToDataSection(TAI->getDwarfLocSection(), 0);
EmitLabel("section_loc", 0);
- Asm->SwitchSection(DwarfPubNamesSection, 0);
+ Asm->SwitchToDataSection(TAI->getDwarfPubNamesSection(), 0);
EmitLabel("section_pubnames", 0);
- Asm->SwitchSection(DwarfStrSection, 0);
+ Asm->SwitchToDataSection(TAI->getDwarfStrSection(), 0);
EmitLabel("section_str", 0);
- Asm->SwitchSection(DwarfRangesSection, 0);
+ Asm->SwitchToDataSection(TAI->getDwarfRangesSection(), 0);
EmitLabel("section_ranges", 0);
-
- Asm->SwitchSection(TextSection, 0);
+ Asm->SwitchToTextSection(TAI->getTextSection(), 0);
EmitLabel("text_begin", 0);
- Asm->SwitchSection(DataSection, 0);
+ Asm->SwitchToDataSection(TAI->getDataSection(), 0);
EmitLabel("data_begin", 0);
+
+ // Emit common frame information.
+ EmitInitialDebugFrame();
}
/// EmitDIE - Recusively Emits a debug information entry.
///
-void DwarfWriter::EmitDIE(DIE *Die) const {
+void Dwarf::EmitDIE(DIE *Die) const {
// Get the abbreviation for this DIE.
- unsigned AbbrevID = Die->getAbbrevID();
- const DIEAbbrev &Abbrev = Abbreviations[AbbrevID];
+ unsigned AbbrevNumber = Die->getAbbrevNumber();
+ const DIEAbbrev *Abbrev = Abbreviations[AbbrevNumber - 1];
O << "\n";
// Emit the code (index) for the abbreviation.
- EmitULEB128Bytes(AbbrevID);
+ EmitULEB128Bytes(AbbrevNumber);
EOL(std::string("Abbrev [" +
- utostr(AbbrevID) +
+ utostr(AbbrevNumber) +
"] 0x" + utohexstr(Die->getOffset()) +
":0x" + utohexstr(Die->getSize()) + " " +
- TagString(Abbrev.getTag())));
+ TagString(Abbrev->getTag())));
const std::vector<DIEValue *> &Values = Die->getValues();
- const std::vector<DIEAbbrevData> &AbbrevData = Abbrev.getData();
+ const std::vector<DIEAbbrevData> &AbbrevData = Abbrev->getData();
// Emit the DIE attribute values.
for (unsigned i = 0, N = Values.size(); i < N; ++i) {
}
// Emit the DIE children if any.
- if (Abbrev.getChildrenFlag() == DW_CHILDREN_yes) {
+ if (Abbrev->getChildrenFlag() == DW_CHILDREN_yes) {
const std::vector<DIE *> &Children = Die->getChildren();
for (unsigned j = 0, M = Children.size(); j < M; ++j) {
- // FIXME - handle sibling offsets.
- // FIXME - handle all DIE types.
EmitDIE(Children[j]);
}
/// SizeAndOffsetDie - Compute the size and offset of a DIE.
///
-unsigned DwarfWriter::SizeAndOffsetDie(DIE *Die, unsigned Offset) {
+unsigned Dwarf::SizeAndOffsetDie(DIE *Die, unsigned Offset, bool Last) {
+ // Get the children.
+ const std::vector<DIE *> &Children = Die->getChildren();
+
+ // If not last sibling and has children then add sibling offset attribute.
+ if (!Last && !Children.empty()) Die->AddSiblingOffset();
+
// Record the abbreviation.
Die->Complete(*this);
// Get the abbreviation for this DIE.
- unsigned AbbrevID = Die->getAbbrevID();
- const DIEAbbrev &Abbrev = Abbreviations[AbbrevID];
+ unsigned AbbrevNumber = Die->getAbbrevNumber();
+ const DIEAbbrev *Abbrev = Abbreviations[AbbrevNumber - 1];
// Set DIE offset
Die->setOffset(Offset);
// Start the size with the size of abbreviation code.
- Offset += SizeULEB128(AbbrevID);
+ Offset += SizeULEB128(AbbrevNumber);
const std::vector<DIEValue *> &Values = Die->getValues();
- const std::vector<DIEAbbrevData> &AbbrevData = Abbrev.getData();
+ const std::vector<DIEAbbrevData> &AbbrevData = Abbrev->getData();
// Emit the DIE attribute values.
for (unsigned i = 0, N = Values.size(); i < N; ++i) {
}
// Emit the DIE children if any.
- if (Abbrev.getChildrenFlag() == DW_CHILDREN_yes) {
- const std::vector<DIE *> &Children = Die->getChildren();
+ if (!Children.empty()) {
+ assert(Abbrev->getChildrenFlag() == DW_CHILDREN_yes &&
+ "Children flag not set");
for (unsigned j = 0, M = Children.size(); j < M; ++j) {
- // FIXME - handle sibling offsets.
- // FIXME - handle all DIE types.
- Offset = SizeAndOffsetDie(Children[j], Offset);
+ Offset = SizeAndOffsetDie(Children[j], Offset, (j + 1) == M);
}
// End of children marker.
/// SizeAndOffsets - Compute the size and offset of all the DIEs.
///
-void DwarfWriter::SizeAndOffsets() {
- unsigned Offset = 0;
+void Dwarf::SizeAndOffsets() {
// Process each compile unit.
for (unsigned i = 0, N = CompileUnits.size(); i < N; ++i) {
- // Compute size of compile unit header
- Offset += sizeof(int32_t) + // Length of Compilation Unit Info
- sizeof(int16_t) + // DWARF version number
- sizeof(int32_t) + // Offset Into Abbrev. Section
- sizeof(int8_t); // Pointer Size (in bytes)
-
- Offset = SizeAndOffsetDie(CompileUnits[i], Offset);
+ CompileUnit *Unit = CompileUnits[i];
+ if (Unit->hasContent()) {
+ // Compute size of compile unit header
+ unsigned Offset = sizeof(int32_t) + // Length of Compilation Unit Info
+ sizeof(int16_t) + // DWARF version number
+ sizeof(int32_t) + // Offset Into Abbrev. Section
+ sizeof(int8_t); // Pointer Size (in bytes)
+ SizeAndOffsetDie(Unit->getDie(), Offset, (i + 1) == N);
+ }
+ }
+}
+
+/// EmitFrameMoves - Emit frame instructions to describe the layout of the
+/// frame.
+void Dwarf::EmitFrameMoves(const char *BaseLabel, unsigned BaseLabelID,
+ std::vector<MachineMove *> &Moves) {
+ for (unsigned i = 0, N = Moves.size(); i < N; ++i) {
+ MachineMove *Move = Moves[i];
+ unsigned LabelID = Move->getLabelID();
+
+ // Throw out move if the label is invalid.
+ if (LabelID && !DebugInfo->isLabelValid(LabelID)) continue;
+
+ const MachineLocation &Dst = Move->getDestination();
+ const MachineLocation &Src = Move->getSource();
+
+ // Advance row if new location.
+ if (BaseLabel && LabelID && BaseLabelID != LabelID) {
+ EmitInt8(DW_CFA_advance_loc4);
+ EOL("DW_CFA_advance_loc4");
+ EmitDifference("loc", LabelID, BaseLabel, BaseLabelID);
+ EOL("");
+
+ BaseLabelID = LabelID;
+ BaseLabel = "loc";
+ }
+
+ int stackGrowth =
+ Asm->TM.getFrameInfo()->getStackGrowthDirection() ==
+ TargetFrameInfo::StackGrowsUp ?
+ TAI->getAddressSize() : -TAI->getAddressSize();
+
+ // If advancing cfa.
+ if (Dst.isRegister() && Dst.getRegister() == MachineLocation::VirtualFP) {
+ if (!Src.isRegister()) {
+ if (Src.getRegister() == MachineLocation::VirtualFP) {
+ EmitInt8(DW_CFA_def_cfa_offset);
+ EOL("DW_CFA_def_cfa_offset");
+ } else {
+ EmitInt8(DW_CFA_def_cfa);
+ EOL("DW_CFA_def_cfa");
+
+ EmitULEB128Bytes(RI->getDwarfRegNum(Src.getRegister()));
+ EOL("Register");
+ }
+
+ int Offset = Src.getOffset() / stackGrowth;
+
+ EmitULEB128Bytes(Offset);
+ EOL("Offset");
+ } else {
+ assert(0 && "Machine move no supported yet.");
+ }
+ } else {
+ unsigned Reg = RI->getDwarfRegNum(Src.getRegister());
+ int Offset = Dst.getOffset() / stackGrowth;
+
+ if (Offset < 0) {
+ EmitInt8(DW_CFA_offset_extended_sf);
+ EOL("DW_CFA_offset_extended_sf");
+ EmitULEB128Bytes(Reg);
+ EOL("Reg");
+ EmitSLEB128Bytes(Offset);
+ EOL("Offset");
+ } else if (Reg < 64) {
+ EmitInt8(DW_CFA_offset + Reg);
+ EOL("DW_CFA_offset + Reg");
+ EmitULEB128Bytes(Offset);
+ EOL("Offset");
+ } else {
+ EmitInt8(DW_CFA_offset_extended);
+ EOL("DW_CFA_offset_extended");
+ EmitULEB128Bytes(Reg);
+ EOL("Reg");
+ EmitULEB128Bytes(Offset);
+ EOL("Offset");
+ }
+ }
}
}
/// EmitDebugInfo - Emit the debug info section.
///
-void DwarfWriter::EmitDebugInfo() const {
+void Dwarf::EmitDebugInfo() const {
// Start debug info section.
- Asm->SwitchSection(DwarfInfoSection, 0);
-
- // Get the number of compile units.
- unsigned N = CompileUnits.size();
+ Asm->SwitchToDataSection(TAI->getDwarfInfoSection(), 0);
- // If there are any compile units.
- if (N) {
- EmitLabel("info_begin", 0);
-
- // Process each compile unit.
- for (unsigned i = 0; i < N; ++i) {
+ // Process each compile unit.
+ for (unsigned i = 0, N = CompileUnits.size(); i < N; ++i) {
+ CompileUnit *Unit = CompileUnits[i];
+
+ if (Unit->hasContent()) {
+ DIE *Die = Unit->getDie();
// Emit the compile units header.
-
+ EmitLabel("info_begin", Unit->getID());
// Emit size of content not including length itself
- unsigned ContentSize = CompileUnits[i]->getSize() +
+ unsigned ContentSize = Die->getSize() +
sizeof(int16_t) + // DWARF version number
sizeof(int32_t) + // Offset Into Abbrev. Section
sizeof(int8_t); // Pointer Size (in bytes)
EmitInt32(ContentSize); EOL("Length of Compilation Unit Info");
EmitInt16(DWARF_VERSION); EOL("DWARF version number");
- EmitReference("abbrev_begin", 0); EOL("Offset Into Abbrev. Section");
- EmitInt8(AddressSize); EOL("Address Size (in bytes)");
+ EmitDifference("abbrev_begin", 0, "section_abbrev", 0);
+ EOL("Offset Into Abbrev. Section");
+ EmitInt8(TAI->getAddressSize()); EOL("Address Size (in bytes)");
- EmitDIE(CompileUnits[i]);
+ EmitDIE(Die);
+ EmitLabel("info_end", Unit->getID());
}
-
- EmitLabel("info_end", 0);
O << "\n";
}
/// EmitAbbreviations - Emit the abbreviation section.
///
-void DwarfWriter::EmitAbbreviations() const {
+void Dwarf::EmitAbbreviations() const {
// Check to see if it is worth the effort.
if (!Abbreviations.empty()) {
// Start the debug abbrev section.
- Asm->SwitchSection(DwarfAbbrevSection, 0);
+ Asm->SwitchToDataSection(TAI->getDwarfAbbrevSection(), 0);
EmitLabel("abbrev_begin", 0);
// For each abbrevation.
- for (unsigned AbbrevID = 1, NAID = Abbreviations.size();
- AbbrevID <= NAID; ++AbbrevID) {
+ for (unsigned i = 0, N = Abbreviations.size(); i < N; ++i) {
// Get abbreviation data
- const DIEAbbrev &Abbrev = Abbreviations[AbbrevID];
+ const DIEAbbrev *Abbrev = Abbreviations[i];
// Emit the abbrevations code (base 1 index.)
- EmitULEB128Bytes(AbbrevID); EOL("Abbreviation Code");
+ EmitULEB128Bytes(Abbrev->getNumber()); EOL("Abbreviation Code");
// Emit the abbreviations data.
- Abbrev.Emit(*this);
+ Abbrev->Emit(*this);
O << "\n";
}
/// EmitDebugLines - Emit source line information.
///
-void DwarfWriter::EmitDebugLines() const {
+void Dwarf::EmitDebugLines() const {
// Minimum line delta, thus ranging from -10..(255-10).
const int MinLineDelta = -(DW_LNS_fixed_advance_pc + 1);
// Maximum line delta, thus ranging from -10..(255-10).
const int MaxLineDelta = 255 + MinLineDelta;
// Start the dwarf line section.
- Asm->SwitchSection(DwarfLineSection, 0);
+ Asm->SwitchToDataSection(TAI->getDwarfLineSection(), 0);
// Construct the section header.
EmitLabel("line_prolog_end", 0);
- // Emit line information
- const std::vector<SourceLineInfo *> &LineInfos = DebugInfo->getSourceLines();
-
- // Dwarf assumes we start with first line of first source file.
- unsigned Source = 1;
- unsigned Line = 1;
-
- // Construct rows of the address, source, line, column matrix.
- for (unsigned i = 0, N = LineInfos.size(); i < N; ++i) {
- SourceLineInfo *LineInfo = LineInfos[i];
+ // A sequence for each text section.
+ for (unsigned j = 0, M = SectionSourceLines.size(); j < M; ++j) {
+ // Isolate current sections line info.
+ const std::vector<SourceLineInfo> &LineInfos = SectionSourceLines[j];
if (DwarfVerbose) {
- unsigned SourceID = LineInfo->getSourceID();
- const SourceFileInfo &SourceFile = SourceFiles[SourceID];
- unsigned DirectoryID = SourceFile.getDirectoryID();
O << "\t"
- << Asm->CommentString << " "
- << Directories[DirectoryID]
- << SourceFile.getName() << ":"
- << LineInfo->getLine() << "\n";
+ << TAI->getCommentString() << " "
+ << "Section "
+ << SectionMap[j + 1].c_str() << "\n";
}
- // Define the line address.
- EmitInt8(0); EOL("Extended Op");
- EmitInt8(4 + 1); EOL("Op size");
- EmitInt8(DW_LNE_set_address); EOL("DW_LNE_set_address");
- EmitReference("loc", i + 1); EOL("Location label");
-
- // If change of source, then switch to the new source.
- if (Source != LineInfo->getSourceID()) {
- Source = LineInfo->getSourceID();
- EmitInt8(DW_LNS_set_file); EOL("DW_LNS_set_file");
- EmitULEB128Bytes(0); EOL("New Source");
- }
+ // Dwarf assumes we start with first line of first source file.
+ unsigned Source = 1;
+ unsigned Line = 1;
- // If change of line.
- if (Line != LineInfo->getLine()) {
- // Determine offset.
- int Offset = LineInfo->getLine() - Line;
- int Delta = Offset - MinLineDelta;
+ // Construct rows of the address, source, line, column matrix.
+ for (unsigned i = 0, N = LineInfos.size(); i < N; ++i) {
+ const SourceLineInfo &LineInfo = LineInfos[i];
+ unsigned LabelID = LineInfo.getLabelID();
+
+ // Source line labels are validated at the MachineDebugInfo level.
+
+ if (DwarfVerbose) {
+ unsigned SourceID = LineInfo.getSourceID();
+ const SourceFileInfo &SourceFile = SourceFiles[SourceID];
+ unsigned DirectoryID = SourceFile.getDirectoryID();
+ O << "\t"
+ << TAI->getCommentString() << " "
+ << Directories[DirectoryID]
+ << SourceFile.getName() << ":"
+ << LineInfo.getLine() << "\n";
+ }
+
+ // Define the line address.
+ EmitInt8(0); EOL("Extended Op");
+ EmitInt8(4 + 1); EOL("Op size");
+ EmitInt8(DW_LNE_set_address); EOL("DW_LNE_set_address");
+ EmitReference("loc", LabelID); EOL("Location label");
- // Update line.
- Line = LineInfo->getLine();
+ // If change of source, then switch to the new source.
+ if (Source != LineInfo.getSourceID()) {
+ Source = LineInfo.getSourceID();
+ EmitInt8(DW_LNS_set_file); EOL("DW_LNS_set_file");
+ EmitULEB128Bytes(Source); EOL("New Source");
+ }
- // If delta is small enough and in range...
- if (Delta >= 0 && Delta < (MaxLineDelta - 1)) {
- // ... then use fast opcode.
- EmitInt8(Delta - MinLineDelta); EOL("Line Delta");
+ // If change of line.
+ if (Line != LineInfo.getLine()) {
+ // Determine offset.
+ int Offset = LineInfo.getLine() - Line;
+ int Delta = Offset - MinLineDelta;
+
+ // Update line.
+ Line = LineInfo.getLine();
+
+ // If delta is small enough and in range...
+ if (Delta >= 0 && Delta < (MaxLineDelta - 1)) {
+ // ... then use fast opcode.
+ EmitInt8(Delta - MinLineDelta); EOL("Line Delta");
+ } else {
+ // ... otherwise use long hand.
+ EmitInt8(DW_LNS_advance_line); EOL("DW_LNS_advance_line");
+ EmitSLEB128Bytes(Offset); EOL("Line Offset");
+ EmitInt8(DW_LNS_copy); EOL("DW_LNS_copy");
+ }
} else {
- // ... otherwise use long hand.
- EmitInt8(DW_LNS_advance_line); EOL("DW_LNS_advance_line");
- EmitSLEB128Bytes(Offset); EOL("Line Offset");
+ // Copy the previous row (different address or source)
EmitInt8(DW_LNS_copy); EOL("DW_LNS_copy");
}
- } else {
- // Copy the previous row (different address or source)
- EmitInt8(DW_LNS_copy); EOL("DW_LNS_copy");
}
- }
- // Define last address.
- EmitInt8(0); EOL("Extended Op");
- EmitInt8(4 + 1); EOL("Op size");
- EmitInt8(DW_LNE_set_address); EOL("DW_LNE_set_address");
- EmitReference("text_end", 0); EOL("Location label");
+ // Define last address of section.
+ EmitInt8(0); EOL("Extended Op");
+ EmitInt8(4 + 1); EOL("Op size");
+ EmitInt8(DW_LNE_set_address); EOL("DW_LNE_set_address");
+ EmitReference("section_end", j + 1); EOL("Section end label");
- // Mark end of matrix.
- EmitInt8(0); EOL("DW_LNE_end_sequence");
- EmitULEB128Bytes(1); O << "\n";
- EmitInt8(1); O << "\n";
+ // Mark end of matrix.
+ EmitInt8(0); EOL("DW_LNE_end_sequence");
+ EmitULEB128Bytes(1); O << "\n";
+ EmitInt8(1); O << "\n";
+ }
EmitLabel("line_end", 0);
O << "\n";
}
-/// EmitDebugFrame - Emit visible names into a debug frame section.
+/// EmitInitialDebugFrame - Emit common frame info into a debug frame section.
///
-void DwarfWriter::EmitDebugFrame() {
- // FIXME - Should be per frame
+void Dwarf::EmitInitialDebugFrame() {
+ if (TAI->getDwarfRequiresFrameSection())
+ return;
+
+ int stackGrowth =
+ Asm->TM.getFrameInfo()->getStackGrowthDirection() ==
+ TargetFrameInfo::StackGrowsUp ?
+ TAI->getAddressSize() : -TAI->getAddressSize();
+
+ // Start the dwarf frame section.
+ Asm->SwitchToDataSection(TAI->getDwarfFrameSection(), 0);
+
+ EmitLabel("frame_common", 0);
+ EmitDifference("frame_common_end", 0,
+ "frame_common_begin", 0);
+ EOL("Length of Common Information Entry");
+
+ EmitLabel("frame_common_begin", 0);
+ EmitInt32(DW_CIE_ID); EOL("CIE Identifier Tag");
+ EmitInt8(DW_CIE_VERSION); EOL("CIE Version");
+ EmitString(""); EOL("CIE Augmentation");
+ EmitULEB128Bytes(1); EOL("CIE Code Alignment Factor");
+ EmitSLEB128Bytes(stackGrowth); EOL("CIE Data Alignment Factor");
+ EmitInt8(RI->getDwarfRegNum(RI->getRARegister())); EOL("CIE RA Column");
+
+ std::vector<MachineMove *> Moves;
+ RI->getInitialFrameState(Moves);
+ EmitFrameMoves(NULL, 0, Moves);
+ for (unsigned i = 0, N = Moves.size(); i < N; ++i) delete Moves[i];
+
+ EmitAlign(2);
+ EmitLabel("frame_common_end", 0);
+
+ O << "\n";
+}
+
+/// EmitFunctionDebugFrame - Emit per function frame info into a debug frame
+/// section.
+void Dwarf::EmitFunctionDebugFrame() {
+ if (TAI->getDwarfRequiresFrameSection())
+ return;
+
+ // Start the dwarf frame section.
+ Asm->SwitchToDataSection(TAI->getDwarfFrameSection(), 0);
+
+ EmitDifference("frame_end", SubprogramCount,
+ "frame_begin", SubprogramCount);
+ EOL("Length of Frame Information Entry");
+
+ EmitLabel("frame_begin", SubprogramCount);
+
+ EmitDifference("frame_common", 0, "section_frame", 0);
+ EOL("FDE CIE offset");
+
+ EmitReference("func_begin", SubprogramCount); EOL("FDE initial location");
+ EmitDifference("func_end", SubprogramCount,
+ "func_begin", SubprogramCount);
+ EOL("FDE address range");
+
+ std::vector<MachineMove *> &Moves = DebugInfo->getFrameMoves();
+
+ EmitFrameMoves("func_begin", SubprogramCount, Moves);
+
+ EmitAlign(2);
+ EmitLabel("frame_end", SubprogramCount);
+
+ O << "\n";
}
/// EmitDebugPubNames - Emit visible names into a debug pubnames section.
///
-void DwarfWriter::EmitDebugPubNames() {
- // Check to see if it is worth the effort.
- if (!GlobalEntities.empty()) {
- // Start the dwarf pubnames section.
- Asm->SwitchSection(DwarfPubNamesSection, 0);
-
- EmitDifference("pubnames_end", 0, "pubnames_begin", 0);
- EOL("Length of Public Names Info");
+void Dwarf::EmitDebugPubNames() {
+ // Start the dwarf pubnames section.
+ Asm->SwitchToDataSection(TAI->getDwarfPubNamesSection(), 0);
- EmitLabel("pubnames_begin", 0);
-
- EmitInt16(DWARF_VERSION); EOL("DWARF Version");
+ // Process each compile unit.
+ for (unsigned i = 0, N = CompileUnits.size(); i < N; ++i) {
+ CompileUnit *Unit = CompileUnits[i];
- EmitReference("info_begin", 0); EOL("Offset of Compilation Unit Info");
+ if (Unit->hasContent()) {
+ EmitDifference("pubnames_end", Unit->getID(),
+ "pubnames_begin", Unit->getID());
+ EOL("Length of Public Names Info");
+
+ EmitLabel("pubnames_begin", Unit->getID());
+
+ EmitInt16(DWARF_VERSION); EOL("DWARF Version");
+
+ EmitDifference("info_begin", Unit->getID(), "section_info", 0);
+ EOL("Offset of Compilation Unit Info");
- EmitDifference("info_end", 0, "info_begin", 0);
- EOL("Compilation Unit Length");
-
- for (std::map<std::string, DIE *>::iterator GI = GlobalEntities.begin(),
- GE = GlobalEntities.end();
- GI != GE; ++GI) {
- const std::string &Name = GI->first;
- DIE * Entity = GI->second;
+ EmitDifference("info_end", Unit->getID(), "info_begin", Unit->getID());
+ EOL("Compilation Unit Length");
- EmitInt32(Entity->getOffset()); EOL("DIE offset");
- EmitString(Name); EOL("External Name");
+ std::map<std::string, DIE *> &Globals = Unit->getGlobals();
+ for (std::map<std::string, DIE *>::iterator GI = Globals.begin(),
+ GE = Globals.end();
+ GI != GE; ++GI) {
+ const std::string &Name = GI->first;
+ DIE * Entity = GI->second;
+
+ EmitInt32(Entity->getOffset()); EOL("DIE offset");
+ EmitString(Name); EOL("External Name");
+ }
+
+ EmitInt32(0); EOL("End Mark");
+ EmitLabel("pubnames_end", Unit->getID());
+
+ O << "\n";
}
-
- EmitInt32(0); EOL("End Mark");
- EmitLabel("pubnames_end", 0);
-
- O << "\n";
- }
-}
-
-/// EmitDebugPubTypes - Emit visible names into a debug pubtypes section.
-///
-void DwarfWriter::EmitDebugPubTypes() {
- // Check to see if it is worth the effort.
- if (!GlobalTypes.empty()) {
- // Start the dwarf pubtypes section.
- Asm->SwitchSection(DwarfPubTypesSection, 0);
-
- O << "\n";
}
}
/// EmitDebugStr - Emit visible names into a debug str section.
///
-void DwarfWriter::EmitDebugStr() {
+void Dwarf::EmitDebugStr() {
// Check to see if it is worth the effort.
if (!StringPool.empty()) {
// Start the dwarf str section.
- Asm->SwitchSection(DwarfStrSection, 0);
+ Asm->SwitchToDataSection(TAI->getDwarfStrSection(), 0);
- // For each of strings in teh string pool.
+ // For each of strings in the string pool.
for (unsigned StringID = 1, N = StringPool.size();
StringID <= N; ++StringID) {
// Emit a label for reference from debug information entries.
/// EmitDebugLoc - Emit visible names into a debug loc section.
///
-void DwarfWriter::EmitDebugLoc() {
+void Dwarf::EmitDebugLoc() {
// Start the dwarf loc section.
- Asm->SwitchSection(DwarfLocSection, 0);
+ Asm->SwitchToDataSection(TAI->getDwarfLocSection(), 0);
O << "\n";
}
/// EmitDebugARanges - Emit visible names into a debug aranges section.
///
-void DwarfWriter::EmitDebugARanges() {
+void Dwarf::EmitDebugARanges() {
// Start the dwarf aranges section.
- Asm->SwitchSection(DwarfARangesSection, 0);
+ Asm->SwitchToDataSection(TAI->getDwarfARangesSection(), 0);
// FIXME - Mock up
+#if 0
+ // Process each compile unit.
+ for (unsigned i = 0, N = CompileUnits.size(); i < N; ++i) {
+ CompileUnit *Unit = CompileUnits[i];
+
+ if (Unit->hasContent()) {
+ // Don't include size of length
+ EmitInt32(0x1c); EOL("Length of Address Ranges Info");
+
+ EmitInt16(DWARF_VERSION); EOL("Dwarf Version");
+
+ EmitReference("info_begin", Unit->getID());
+ EOL("Offset of Compilation Unit Info");
- // Don't include size of length
- EmitInt32(0x1c); EOL("Length of Address Ranges Info");
-
- EmitInt16(DWARF_VERSION); EOL("Dwarf Version");
-
- EmitReference("info_begin", 0); EOL("Offset of Compilation Unit Info");
-
- EmitInt8(AddressSize); EOL("Size of Address");
+ EmitInt8(TAI->getAddressSize()); EOL("Size of Address");
- EmitInt8(0); EOL("Size of Segment Descriptor");
+ EmitInt8(0); EOL("Size of Segment Descriptor");
- EmitInt16(0); EOL("Pad (1)");
- EmitInt16(0); EOL("Pad (2)");
+ EmitInt16(0); EOL("Pad (1)");
+ EmitInt16(0); EOL("Pad (2)");
- // Range 1
- EmitReference("text_begin", 0); EOL("Address");
- EmitDifference("text_end", 0, "text_begin", 0); EOL("Length");
+ // Range 1
+ EmitReference("text_begin", 0); EOL("Address");
+ EmitDifference("text_end", 0, "text_begin", 0); EOL("Length");
- EmitInt32(0); EOL("EOM (1)");
- EmitInt32(0); EOL("EOM (2)");
-
- O << "\n";
+ EmitInt32(0); EOL("EOM (1)");
+ EmitInt32(0); EOL("EOM (2)");
+
+ O << "\n";
+ }
+ }
+#endif
}
/// EmitDebugRanges - Emit visible names into a debug ranges section.
///
-void DwarfWriter::EmitDebugRanges() {
+void Dwarf::EmitDebugRanges() {
// Start the dwarf ranges section.
- Asm->SwitchSection(DwarfRangesSection, 0);
+ Asm->SwitchToDataSection(TAI->getDwarfRangesSection(), 0);
O << "\n";
}
/// EmitDebugMacInfo - Emit visible names into a debug macinfo section.
///
-void DwarfWriter::EmitDebugMacInfo() {
+void Dwarf::EmitDebugMacInfo() {
// Start the dwarf macinfo section.
- Asm->SwitchSection(DwarfMacInfoSection, 0);
+ Asm->SwitchToDataSection(TAI->getDwarfMacInfoSection(), 0);
O << "\n";
}
/// ConstructCompileUnitDIEs - Create a compile unit DIE for each source and
/// header file.
-void DwarfWriter::ConstructCompileUnitDIEs() {
+void Dwarf::ConstructCompileUnitDIEs() {
const UniqueVector<CompileUnitDesc *> CUW = DebugInfo->getCompileUnits();
for (unsigned i = 1, N = CUW.size(); i <= N; ++i) {
- DIE *Unit = NewCompileUnit(CUW[i]);
+ CompileUnit *Unit = NewCompileUnit(CUW[i], i);
CompileUnits.push_back(Unit);
}
}
/// ConstructGlobalDIEs - Create DIEs for each of the externally visible global
/// variables.
-void DwarfWriter::ConstructGlobalDIEs(Module &M) {
+void Dwarf::ConstructGlobalDIEs() {
std::vector<GlobalVariableDesc *> GlobalVariables =
- DebugInfo->getAnchoredDescriptors<GlobalVariableDesc>(M);
+ DebugInfo->getAnchoredDescriptors<GlobalVariableDesc>(*M);
for (unsigned i = 0, N = GlobalVariables.size(); i < N; ++i) {
GlobalVariableDesc *GVD = GlobalVariables[i];
/// ConstructSubprogramDIEs - Create DIEs for each of the externally visible
/// subprograms.
-void DwarfWriter::ConstructSubprogramDIEs(Module &M) {
+void Dwarf::ConstructSubprogramDIEs() {
std::vector<SubprogramDesc *> Subprograms =
- DebugInfo->getAnchoredDescriptors<SubprogramDesc>(M);
+ DebugInfo->getAnchoredDescriptors<SubprogramDesc>(*M);
for (unsigned i = 0, N = Subprograms.size(); i < N; ++i) {
SubprogramDesc *SPD = Subprograms[i];
}
}
-/// ShouldEmitDwarf - Determine if Dwarf declarations should be made.
-///
-bool DwarfWriter::ShouldEmitDwarf() {
- // Check if debug info is present.
- if (!DebugInfo || !DebugInfo->hasInfo()) return false;
-
- // Make sure initial declarations are made.
- if (!didInitial) {
- EmitInitial();
- didInitial = true;
- }
-
- // Okay to emit.
- return true;
-}
-
//===----------------------------------------------------------------------===//
-// Main entry points.
+/// Dwarf implemenation.
//
-DwarfWriter::DwarfWriter(std::ostream &OS, AsmPrinter *A)
+Dwarf::Dwarf(std::ostream &OS, AsmPrinter *A,
+ const TargetAsmInfo *T)
: O(OS)
, Asm(A)
+, TAI(T)
+, TD(Asm->TM.getTargetData())
+, RI(Asm->TM.getRegisterInfo())
+, M(NULL)
+, MF(NULL)
, DebugInfo(NULL)
, didInitial(false)
+, shouldEmit(false)
+, SubprogramCount(0)
, CompileUnits()
+, AbbreviationsSet()
, Abbreviations()
-, GlobalTypes()
-, GlobalEntities()
, StringPool()
+, DescToUnitMap()
, DescToDieMap()
-, TypeToDieMap()
-, AddressSize(sizeof(int32_t))
-, hasLEB128(false)
-, hasDotLoc(false)
-, hasDotFile(false)
-, needsSet(false)
-, DwarfAbbrevSection(".debug_abbrev")
-, DwarfInfoSection(".debug_info")
-, DwarfLineSection(".debug_line")
-, DwarfFrameSection(".debug_frame")
-, DwarfPubNamesSection(".debug_pubnames")
-, DwarfPubTypesSection(".debug_pubtypes")
-, DwarfStrSection(".debug_str")
-, DwarfLocSection(".debug_loc")
-, DwarfARangesSection(".debug_aranges")
-, DwarfRangesSection(".debug_ranges")
-, DwarfMacInfoSection(".debug_macinfo")
-, TextSection(".text")
-, DataSection(".data")
-{}
-DwarfWriter::~DwarfWriter() {
+, SectionMap()
+, SectionSourceLines()
+{
+}
+Dwarf::~Dwarf() {
for (unsigned i = 0, N = CompileUnits.size(); i < N; ++i) {
delete CompileUnits[i];
}
}
+/// SetDebugInfo - Set DebugInfo when it's known that pass manager has
+/// created it. Set by the target AsmPrinter.
+void Dwarf::SetDebugInfo(MachineDebugInfo *DI) {
+ // Make sure initial declarations are made.
+ if (!DebugInfo && DI->hasInfo()) {
+ DebugInfo = DI;
+ shouldEmit = true;
+
+ // Emit initial sections
+ EmitInitial();
+
+ // Create all the compile unit DIEs.
+ ConstructCompileUnitDIEs();
+
+ // Create DIEs for each of the externally visible global variables.
+ ConstructGlobalDIEs();
+
+ // Create DIEs for each of the externally visible subprograms.
+ ConstructSubprogramDIEs();
+
+ // Prime section data.
+ SectionMap.insert(std::string("\t") + TAI->getTextSection());
+ }
+}
+
/// BeginModule - Emit all Dwarf sections that should come prior to the content.
///
-void DwarfWriter::BeginModule(Module &M) {
+void Dwarf::BeginModule(Module *M) {
+ this->M = M;
+
if (!ShouldEmitDwarf()) return;
EOL("Dwarf Begin Module");
}
/// EndModule - Emit all Dwarf sections that should come after the content.
///
-void DwarfWriter::EndModule(Module &M) {
+void Dwarf::EndModule() {
if (!ShouldEmitDwarf()) return;
EOL("Dwarf End Module");
// Standard sections final addresses.
- Asm->SwitchSection(TextSection, 0);
+ Asm->SwitchToTextSection(TAI->getTextSection(), 0);
EmitLabel("text_end", 0);
- Asm->SwitchSection(DataSection, 0);
+ Asm->SwitchToDataSection(TAI->getDataSection(), 0);
EmitLabel("data_end", 0);
- // Create all the compile unit DIEs.
- ConstructCompileUnitDIEs();
-
- // Create DIEs for each of the externally visible global variables.
- ConstructGlobalDIEs(M);
-
- // Create DIEs for each of the externally visible subprograms.
- ConstructSubprogramDIEs(M);
+ // End text sections.
+ for (unsigned i = 1, N = SectionMap.size(); i <= N; ++i) {
+ Asm->SwitchToTextSection(SectionMap[i].c_str(), 0);
+ EmitLabel("section_end", i);
+ }
// Compute DIE offsets and sizes.
SizeAndOffsets();
// Emit source line correspondence into a debug line section.
EmitDebugLines();
- // Emit info into a debug frame section.
- // EmitDebugFrame();
-
// Emit info into a debug pubnames section.
EmitDebugPubNames();
- // Emit info into a debug pubtypes section.
- // EmitDebugPubTypes();
-
// Emit info into a debug str section.
EmitDebugStr();
EmitDebugMacInfo();
}
-/// BeginFunction - Gather pre-function debug information.
-///
-void DwarfWriter::BeginFunction(MachineFunction &MF) {
+/// BeginFunction - Gather pre-function debug information. Assumes being
+/// emitted immediately after the function entry point.
+void Dwarf::BeginFunction(MachineFunction *MF) {
+ this->MF = MF;
+
if (!ShouldEmitDwarf()) return;
EOL("Dwarf Begin Function");
+
+ // Begin accumulating function debug information.
+ DebugInfo->BeginFunction(MF);
+
+ // Assumes in correct section after the entry point.
+ EmitLabel("func_begin", ++SubprogramCount);
}
/// EndFunction - Gather and emit post-function debug information.
///
-void DwarfWriter::EndFunction(MachineFunction &MF) {
+void Dwarf::EndFunction() {
if (!ShouldEmitDwarf()) return;
EOL("Dwarf End Function");
+
+ // Define end label for subprogram.
+ EmitLabel("func_end", SubprogramCount);
+
+ // Get function line info.
+ const std::vector<SourceLineInfo> &LineInfos = DebugInfo->getSourceLines();
+
+ if (!LineInfos.empty()) {
+ // Get section line info.
+ unsigned ID = SectionMap.insert(Asm->CurrentSection);
+ if (SectionSourceLines.size() < ID) SectionSourceLines.resize(ID);
+ std::vector<SourceLineInfo> &SectionLineInfos = SectionSourceLines[ID-1];
+ // Append the function info to section info.
+ SectionLineInfos.insert(SectionLineInfos.end(),
+ LineInfos.begin(), LineInfos.end());
+ }
+
+ // Construct scopes for subprogram.
+ ConstructRootScope(DebugInfo->getRootScope());
+
+ // Emit function frame information.
+ EmitFunctionDebugFrame();
+
+ // Reset the line numbers for the next function.
+ DebugInfo->ClearLineInfo();
+
+ // Clear function debug information.
+ DebugInfo->EndFunction();
+}
+
+
+//===----------------------------------------------------------------------===//
+/// DwarfWriter Implementation
+
+DwarfWriter::DwarfWriter(std::ostream &OS, AsmPrinter *A,
+ const TargetAsmInfo *T) {
+ DW = new Dwarf(OS, A, T);
+}
+
+DwarfWriter::~DwarfWriter() {
+ delete DW;
+}
+
+/// SetDebugInfo - Set DebugInfo when it's known that pass manager has
+/// created it. Set by the target AsmPrinter.
+void DwarfWriter::SetDebugInfo(MachineDebugInfo *DI) {
+ DW->SetDebugInfo(DI);
+}
+
+/// BeginModule - Emit all Dwarf sections that should come prior to the
+/// content.
+void DwarfWriter::BeginModule(Module *M) {
+ DW->BeginModule(M);
+}
+
+/// EndModule - Emit all Dwarf sections that should come after the content.
+///
+void DwarfWriter::EndModule() {
+ DW->EndModule();
+}
+
+/// BeginFunction - Gather pre-function debug information. Assumes being
+/// emitted immediately after the function entry point.
+void DwarfWriter::BeginFunction(MachineFunction *MF) {
+ DW->BeginFunction(MF);
+}
+
+/// EndFunction - Gather and emit post-function debug information.
+///
+void DwarfWriter::EndFunction() {
+ DW->EndFunction();
}
projects / oota-llvm.git / blobdiff