//
// The LLVM Compiler Infrastructure
//
-// This file was developed by James M. Laskey and is distributed under the
-// University of Illinois Open Source License. See LICENSE.TXT for details.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
-// This file contains support for writing Dwarf debug info into asm files. For
-// Details on the Dwarf 3 specfication see DWARF Debugging Information Format
-// V.3 reference manual http://dwarf.freestandards.org ,
+// This file contains support for writing Dwarf debug and exception info into
+// asm files. For Details on the Dwarf 3 specfication see DWARF Debugging
+// Information Format V.3 reference manual http://dwarf.freestandards.org ,
//
-// The role of the Dwarf Writer class is to extract debug information from the
-// MachineDebugInfo object, organize it in Dwarf form and then emit it into asm
+// The role of the Dwarf Writer class is to extract information from the
+// MachineModuleInfo object, organize it in Dwarf form and then emit it into asm
// the current asm file using data and high level Dwarf directives.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CODEGEN_DWARFWRITER_H
#define LLVM_CODEGEN_DWARFWRITER_H
-#include "llvm/ADT/UniqueVector.h"
-#include "llvm/Support/DataTypes.h"
-
-#include <iosfwd>
-#include <string>
-
+#include "llvm/Pass.h"
+#include "llvm/Target/TargetMachine.h"
namespace llvm {
-// Forward declarations.
-
class AsmPrinter;
-class CompileUnit;
-class CompileUnitDesc;
-class DebugInfoDesc;
-class DebugVariable;
-class DebugScope;
-class DIE;
-class DIEAbbrev;
-class GlobalVariableDesc;
-class MachineDebugInfo;
+class DwarfDebug;
+class DwarfException;
+class MachineModuleInfo;
class MachineFunction;
-class MachineLocation;
-class MachineMove;
+class MachineInstr;
+class Value;
class Module;
-class MRegisterInfo;
-class SubprogramDesc;
-class TargetData;
-class Type;
-class TypeDesc;
-
-//===----------------------------------------------------------------------===//
-// 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) {}
-};
+class MDNode;
+class MCAsmInfo;
+class raw_ostream;
+class Instruction;
+class DICompileUnit;
+class DISubprogram;
+class DIVariable;
//===----------------------------------------------------------------------===//
// DwarfWriter - Emits Dwarf debug and exception handling directives.
//
-class DwarfWriter {
-protected:
-
- //===--------------------------------------------------------------------===//
- // Core attributes used by the Dwarf writer.
- //
-
- //
- /// O - Stream to .s file.
- ///
- std::ostream &O;
-
- /// Asm - Target of Dwarf emission.
- ///
- AsmPrinter *Asm;
-
- /// 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;
-
- /// 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;
-
- /// Abbreviations - A UniqueVector of TAG structure abbreviations.
- ///
- UniqueVector<DIEAbbrev> Abbreviations;
-
- /// 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;
-
- /// TypeToDieMap - Type to DIEType map.
- ///
- // FIXME - Should not be needed.
- std::map<Type *, DIE *> TypeToDieMap;
-
- //===--------------------------------------------------------------------===//
- // Properties to be set by the derived class ctor, used to configure the
- // Dwarf writer.
- //
-
- /// AddressSize - Size of addresses used in file.
- ///
- unsigned AddressSize;
-
- /// hasLEB128 - True if target asm supports leb128 directives.
- ///
- bool hasLEB128; /// Defaults to false.
-
- /// hasDotLoc - True if target asm supports .loc directives.
- ///
- bool hasDotLoc; /// Defaults to false.
-
- /// hasDotFile - True if target asm supports .file directives.
- ///
- bool hasDotFile; /// Defaults to false.
-
- /// needsSet - True if target asm can't compute addresses on data
- /// directives.
- bool needsSet; /// Defaults to false.
-
- /// DwarfAbbrevSection - Section directive for Dwarf abbrev.
- ///
- const char *DwarfAbbrevSection; /// Defaults to ".debug_abbrev".
-
- /// DwarfInfoSection - Section directive for Dwarf info.
- ///
- const char *DwarfInfoSection; /// Defaults to ".debug_info".
-
- /// DwarfLineSection - Section directive for Dwarf info.
- ///
- const char *DwarfLineSection; /// Defaults to ".debug_line".
-
- /// DwarfFrameSection - Section directive for Dwarf info.
- ///
- const char *DwarfFrameSection; /// Defaults to ".debug_frame".
-
- /// DwarfPubNamesSection - Section directive for Dwarf info.
- ///
- const char *DwarfPubNamesSection; /// Defaults to ".debug_pubnames".
-
- /// DwarfPubTypesSection - Section directive for Dwarf info.
- ///
- const char *DwarfPubTypesSection; /// Defaults to ".debug_pubtypes".
-
- /// DwarfStrSection - Section directive for Dwarf info.
- ///
- const char *DwarfStrSection; /// Defaults to ".debug_str".
-
- /// DwarfLocSection - Section directive for Dwarf info.
- ///
- const char *DwarfLocSection; /// Defaults to ".debug_loc".
-
- /// DwarfARangesSection - Section directive for Dwarf info.
- ///
- const char *DwarfARangesSection; /// Defaults to ".debug_aranges".
-
- /// DwarfRangesSection - Section directive for Dwarf info.
- ///
- const char *DwarfRangesSection; /// Defaults to ".debug_ranges".
-
- /// DwarfMacInfoSection - Section directive for Dwarf info.
- ///
- const char *DwarfMacInfoSection; /// Defaults to ".debug_macinfo".
-
- /// TextSection - Section directive for standard text.
- ///
- const char *TextSection; /// Defaults to ".text".
-
- /// DataSection - Section directive for standard data.
- ///
- const char *DataSection; /// Defaults to ".data".
-
- //===--------------------------------------------------------------------===//
- // Emission and print routines
- //
-
-public:
- /// getAddressSize - Return the size of a target address in bytes.
- ///
- unsigned getAddressSize() const { return AddressSize; }
- /// 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;
-
- /// 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;
-
- /// NewAbbreviation - Add the abbreviation to the Abbreviation vector.
- ///
- unsigned NewAbbreviation(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);
-
+class DwarfWriter : public ImmutablePass {
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.
+ /// DD - Provides the DwarfWriter debug implementation.
///
- 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);
+ DwarfDebug *DD;
- /// NewSubprogram - Add a new subprogram DIE.
+ /// DE - Provides the DwarfWriter exception implementation.
///
- 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() const;
-
- /// 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.
- /// When called it also checks to see if debug info is newly available. if
- /// so the initial Dwarf headers are emitted.
- bool ShouldEmitDwarf();
+ DwarfException *DE;
public:
-
- DwarfWriter(std::ostream &OS, AsmPrinter *A);
+ static char ID; // Pass identification, replacement for typeid
+
+ DwarfWriter();
virtual ~DwarfWriter();
-
- /// 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);
+ void BeginModule(Module *M, MachineModuleInfo *MMI, raw_ostream &OS,
+ AsmPrinter *A, const MCAsmInfo *T);
/// EndModule - Emit all Dwarf sections that should come after the content.
///
/// BeginFunction - Gather pre-function debug information. Assumes being
/// emitted immediately after the function entry point.
- void BeginFunction(MachineFunction *MF);
+ void BeginFunction(const MachineFunction *MF);
/// EndFunction - Gather and emit post-function debug information.
///
- void EndFunction();
+ void EndFunction(const MachineFunction *MF);
+
+ /// RecordSourceLine - Register a source line with debug info. Returns a
+ /// unique label ID used to generate a label and provide correspondence to
+ /// the source line list.
+ unsigned RecordSourceLine(unsigned Line, unsigned Col, MDNode *Scope);
+
+ /// getRecordSourceLineCount - Count source lines.
+ unsigned getRecordSourceLineCount();
+
+ /// ShouldEmitDwarfDebug - Returns true if Dwarf debugging declarations should
+ /// be emitted.
+ bool ShouldEmitDwarfDebug() const;
+
+ void BeginScope(const MachineInstr *MI, unsigned Label);
+ void EndScope(const MachineInstr *MI);
};
} // end llvm namespace
projects / oota-llvm.git / blobdiff