[llvm-commits] CVS: llvm/lib/CodeGen/DwarfWriter.cpp
Jim Laskey
jlaskey at apple.com
Mon Oct 30 05:35:21 PST 2006
Changes in directory llvm/lib/CodeGen:
DwarfWriter.cpp updated: 1.85 -> 1.86
---
Log message:
Simplify DwarfWriter header.
---
Diffs of the changes: (+508 -97)
DwarfWriter.cpp | 605 +++++++++++++++++++++++++++++++++++++++++++++++---------
1 files changed, 508 insertions(+), 97 deletions(-)
Index: llvm/lib/CodeGen/DwarfWriter.cpp
diff -u llvm/lib/CodeGen/DwarfWriter.cpp:1.85 llvm/lib/CodeGen/DwarfWriter.cpp:1.86
--- llvm/lib/CodeGen/DwarfWriter.cpp:1.85 Tue Oct 24 06:50:43 2006
+++ llvm/lib/CodeGen/DwarfWriter.cpp Mon Oct 30 07:35:07 2006
@@ -14,6 +14,7 @@
#include "llvm/CodeGen/DwarfWriter.h"
#include "llvm/ADT/StringExtras.h"
+#include "llvm/ADT/UniqueVector.h"
#include "llvm/Module.h"
#include "llvm/Type.h"
#include "llvm/CodeGen/AsmPrinter.h"
@@ -22,6 +23,7 @@
#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"
@@ -30,6 +32,7 @@
#include "llvm/Target/TargetFrameInfo.h"
#include <iostream>
+#include <string>
using namespace llvm;
using namespace llvm::dwarf;
@@ -39,6 +42,20 @@
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.
@@ -176,7 +193,7 @@
/// 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);
@@ -209,11 +226,11 @@
/// 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;
};
//===----------------------------------------------------------------------===//
@@ -236,11 +253,11 @@
/// 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;
};
//===----------------------------------------------------------------------===//
@@ -257,11 +274,11 @@
/// 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;
};
//===----------------------------------------------------------------------===//
@@ -278,11 +295,11 @@
/// 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;
};
@@ -300,11 +317,11 @@
/// 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;
};
//===----------------------------------------------------------------------===//
@@ -323,11 +340,11 @@
/// 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;
};
//===----------------------------------------------------------------------===//
@@ -344,11 +361,11 @@
/// 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 debug information entry in bytes.
///
- virtual unsigned SizeOf(const DwarfWriter &DW, unsigned Form) const;
+ virtual unsigned SizeOf(const Dwarf &DW, unsigned Form) const;
};
//===----------------------------------------------------------------------===//
@@ -373,7 +390,7 @@
/// ComputeSize - calculate the size of the block.
///
- unsigned ComputeSize(DwarfWriter &DW);
+ unsigned ComputeSize(Dwarf &DW);
/// BestForm - Choose the best form for data.
///
@@ -381,11 +398,11 @@
/// EmitValue - Emit block data.
///
- virtual void EmitValue(const DwarfWriter &DW, unsigned Form) const;
+ virtual void EmitValue(const Dwarf &DW, unsigned Form) const;
/// SizeOf - Determine size of block data in bytes.
///
- virtual unsigned SizeOf(const DwarfWriter &DW, unsigned Form) const;
+ virtual unsigned SizeOf(const Dwarf &DW, unsigned Form) const;
/// AddUInt - Add an unsigned integer value.
///
@@ -488,12 +505,364 @@
/// 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);
};
+//===----------------------------------------------------------------------===//
+// Dwarf - Emits Dwarf debug and exception handling directives.
+//
+class Dwarf {
+
+private:
+
+ //===--------------------------------------------------------------------===//
+ // Core attributes used by the Dwarf writer.
+ //
+
+ //
+ /// O - Stream to .s file.
+ ///
+ std::ostream &O;
+
+ /// Asm - Target of Dwarf emission.
+ ///
+ AsmPrinter *Asm;
+
+ /// 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;
+
+ /// 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;
+
+ /// 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;
+
+ /// 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);
+
+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
//===----------------------------------------------------------------------===//
@@ -546,7 +915,7 @@
/// 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));
@@ -613,7 +982,7 @@
/// 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
@@ -632,7 +1001,7 @@
/// 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
@@ -654,13 +1023,13 @@
/// 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');
}
@@ -668,13 +1037,13 @@
/// 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 {
+unsigned DIEDwarfLabel::SizeOf(const Dwarf &DW, unsigned Form) const {
return DW.getTargetAsmInfo()->getAddressSize();
}
@@ -682,13 +1051,13 @@
/// EmitValue - Emit label value.
///
-void DIEObjectLabel::EmitValue(const DwarfWriter &DW, unsigned Form) const {
+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 {
+unsigned DIEObjectLabel::SizeOf(const Dwarf &DW, unsigned Form) const {
return DW.getTargetAsmInfo()->getAddressSize();
}
@@ -696,26 +1065,26 @@
/// 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 {
+unsigned DIEDelta::SizeOf(const Dwarf &DW, unsigned Form) const {
return DW.getTargetAsmInfo()->getAddressSize();
}
//===----------------------------------------------------------------------===//
/// 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 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);
}
@@ -729,7 +1098,7 @@
/// ComputeSize - calculate the size of the block.
///
-unsigned DIEBlock::ComputeSize(DwarfWriter &DW) {
+unsigned DIEBlock::ComputeSize(Dwarf &DW) {
Size = 0;
for (unsigned i = 0, N = Values.size(); i < N; ++i) {
Size += Values[i]->SizeOf(DW, Forms[i]);
@@ -748,7 +1117,7 @@
/// EmitValue - Emit block data.
///
-void DIEBlock::EmitValue(const DwarfWriter &DW, unsigned Form) const {
+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;
@@ -764,7 +1133,7 @@
/// SizeOf - Determine size of block data in bytes.
///
-unsigned DIEBlock::SizeOf(const DwarfWriter &DW, unsigned Form) const {
+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);
@@ -927,7 +1296,7 @@
/// Complete - Indicate that all attributes have been added and ready to get an
/// abbreviation ID.
-void DIE::Complete(DwarfWriter &DW) {
+void DIE::Complete(Dwarf &DW) {
AbbrevID = DW.NewAbbreviation(Abbrev);
delete Abbrev;
Abbrev = NULL;
@@ -943,19 +1312,19 @@
//===----------------------------------------------------------------------===//
-/// DwarfWriter
+/// 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 {
+void Dwarf::EOL(const std::string &Comment) const {
if (DwarfVerbose && !Comment.empty()) {
O << "\t"
<< TAI->getCommentString()
@@ -967,13 +1336,13 @@
/// EmitAlign - Print a align directive.
///
-void DwarfWriter::EmitAlign(unsigned Alignment) const {
+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 {
+void Dwarf::EmitULEB128Bytes(unsigned Value) const {
if (TAI->hasLEB128()) {
O << "\t.uleb128\t"
<< Value;
@@ -985,7 +1354,7 @@
/// EmitSLEB128Bytes - Emit an assembler byte data directive to compose a
/// signed leb128 value.
-void DwarfWriter::EmitSLEB128Bytes(int Value) const {
+void Dwarf::EmitSLEB128Bytes(int Value) const {
if (TAI->hasLEB128()) {
O << "\t.sleb128\t"
<< Value;
@@ -997,7 +1366,7 @@
/// 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;
@@ -1009,7 +1378,7 @@
/// 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;
@@ -1020,7 +1389,7 @@
/// 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;
@@ -1036,7 +1405,7 @@
/// 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;
@@ -1052,28 +1421,28 @@
/// EmitInt8 - Emit a byte directive and value.
///
-void DwarfWriter::EmitInt8(int Value) const {
+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 {
+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 {
+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 {
+void Dwarf::EmitInt64(uint64_t Value) const {
if (TAI->getData64bitsDirective()) {
O << TAI->getData64bitsDirective() << "0x" << std::hex << Value << std::dec;
} else {
@@ -1089,7 +1458,7 @@
/// 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 {
+void Dwarf::EmitString(const std::string &String) const {
O << TAI->getAsciiDirective()
<< "\"";
for (unsigned i = 0, N = String.size(); i < N; ++i) {
@@ -1122,7 +1491,7 @@
/// PrintLabelName - Print label name in form used by Dwarf writer.
///
-void DwarfWriter::PrintLabelName(const char *Tag, unsigned Number) const {
+void Dwarf::PrintLabelName(const char *Tag, unsigned Number) const {
O << TAI->getPrivateGlobalPrefix()
<< "debug_"
<< Tag;
@@ -1131,14 +1500,14 @@
/// 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 {
+void Dwarf::EmitReference(const char *Tag, unsigned Number) const {
if (TAI->getAddressSize() == 4)
O << TAI->getData32bitsDirective();
else
@@ -1146,7 +1515,7 @@
PrintLabelName(Tag, Number);
}
-void DwarfWriter::EmitReference(const std::string &Name) const {
+void Dwarf::EmitReference(const std::string &Name) const {
if (TAI->getAddressSize() == 4)
O << TAI->getData32bitsDirective();
else
@@ -1158,7 +1527,7 @@
/// 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 (TAI->needsSet()) {
static unsigned SetCounter = 0;
@@ -1193,20 +1562,20 @@
/// NewAbbreviation - Add the abbreviation to the Abbreviation vector.
///
-unsigned DwarfWriter::NewAbbreviation(DIEAbbrev *Abbrev) {
+unsigned Dwarf::NewAbbreviation(DIEAbbrev *Abbrev) {
return Abbreviations.insert(*Abbrev);
}
/// 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);
}
/// AddSourceLine - Add location information to specified debug information
/// entry.
-void DwarfWriter::AddSourceLine(DIE *Die, CompileUnitDesc *File, unsigned Line){
+void Dwarf::AddSourceLine(DIE *Die, CompileUnitDesc *File, unsigned Line){
if (File && Line) {
CompileUnit *FileUnit = FindCompileUnit(File);
unsigned FileID = FileUnit->getID();
@@ -1217,7 +1586,7 @@
/// AddAddress - Add an address attribute to a die based on the location
/// provided.
-void DwarfWriter::AddAddress(DIE *Die, unsigned Attribute,
+void Dwarf::AddAddress(DIE *Die, unsigned Attribute,
const MachineLocation &Location) {
DIEBlock *Block = new DIEBlock();
unsigned Reg = RI->getDwarfRegNum(Location.getRegister());
@@ -1244,13 +1613,13 @@
/// getDieMapSlotFor - Returns the debug information entry map slot for the
/// specified debug descriptor.
-DIE *&DwarfWriter::getDieMapSlotFor(DebugInfoDesc *DD) {
+DIE *&Dwarf::getDieMapSlotFor(DebugInfoDesc *DD) {
return DescToDieMap[DD];
}
/// NewType - Create a new type DIE.
///
-DIE *DwarfWriter::NewType(DIE *Context, TypeDesc *TyDesc, CompileUnit *Unit) {
+DIE *Dwarf::NewType(DIE *Context, TypeDesc *TyDesc, CompileUnit *Unit) {
if (!TyDesc) {
// FIXME - Hack for missing types
DIE *Die = new DIE(DW_TAG_base_type);
@@ -1565,7 +1934,7 @@
/// NewCompileUnit - Create new compile unit and it's debug information entry.
///
-CompileUnit *DwarfWriter::NewCompileUnit(CompileUnitDesc *UnitDesc,
+CompileUnit *Dwarf::NewCompileUnit(CompileUnitDesc *UnitDesc,
unsigned ID) {
// Construct debug information entry.
DIE *Die = new DIE(DW_TAG_compile_unit);
@@ -1593,7 +1962,7 @@
/// FindCompileUnit - Get the compile unit for the given descriptor.
///
-CompileUnit *DwarfWriter::FindCompileUnit(CompileUnitDesc *UnitDesc) {
+CompileUnit *Dwarf::FindCompileUnit(CompileUnitDesc *UnitDesc) {
CompileUnit *Unit = DescToUnitMap[UnitDesc];
assert(Unit && "Missing compile unit.");
return Unit;
@@ -1601,7 +1970,7 @@
/// 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);
@@ -1658,7 +2027,7 @@
/// 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);
@@ -1704,7 +2073,7 @@
/// NewScopeVariable - Create a new scope variable.
///
-DIE *DwarfWriter::NewScopeVariable(DebugVariable *DV, CompileUnit *Unit) {
+DIE *Dwarf::NewScopeVariable(DebugVariable *DV, CompileUnit *Unit) {
// Get the descriptor.
VariableDesc *VD = DV->getDesc();
@@ -1738,7 +2107,7 @@
/// ConstructScope - Construct the components of a scope.
///
-void DwarfWriter::ConstructScope(DebugScope *ParentScope,
+void Dwarf::ConstructScope(DebugScope *ParentScope,
DIE *ParentDie, CompileUnit *Unit) {
// Add variables to scope.
std::vector<DebugVariable *> &Variables = ParentScope->getVariables();
@@ -1788,7 +2157,7 @@
/// ConstructRootScope - Construct the scope for the subprogram.
///
-void DwarfWriter::ConstructRootScope(DebugScope *RootScope) {
+void Dwarf::ConstructRootScope(DebugScope *RootScope) {
// Exit if there is no root scope.
if (!RootScope) return;
@@ -1817,7 +2186,7 @@
/// EmitInitial - Emit initial Dwarf declarations. This is necessary for cc
/// tools to recognize the object file contains Dwarf information.
///
-void DwarfWriter::EmitInitial() {
+void Dwarf::EmitInitial() {
// Check to see if we already emitted intial headers.
if (didInitial) return;
didInitial = true;
@@ -1858,7 +2227,7 @@
/// 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];
@@ -1911,7 +2280,7 @@
/// SizeAndOffsetDie - Compute the size and offset of a DIE.
///
-unsigned DwarfWriter::SizeAndOffsetDie(DIE *Die, unsigned Offset, bool Last) {
+unsigned Dwarf::SizeAndOffsetDie(DIE *Die, unsigned Offset, bool Last) {
// Get the children.
const std::vector<DIE *> &Children = Die->getChildren();
@@ -1959,7 +2328,7 @@
/// SizeAndOffsets - Compute the size and offset of all the DIEs.
///
-void DwarfWriter::SizeAndOffsets() {
+void Dwarf::SizeAndOffsets() {
// Process each compile unit.
for (unsigned i = 0, N = CompileUnits.size(); i < N; ++i) {
@@ -1977,7 +2346,7 @@
/// EmitFrameMoves - Emit frame instructions to describe the layout of the
/// frame.
-void DwarfWriter::EmitFrameMoves(const char *BaseLabel, unsigned BaseLabelID,
+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];
@@ -2056,7 +2425,7 @@
/// EmitDebugInfo - Emit the debug info section.
///
-void DwarfWriter::EmitDebugInfo() const {
+void Dwarf::EmitDebugInfo() const {
// Start debug info section.
Asm->SwitchToDataSection(TAI->getDwarfInfoSection(), 0);
@@ -2090,7 +2459,7 @@
/// 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.
@@ -2121,7 +2490,7 @@
/// 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).
@@ -2277,7 +2646,7 @@
/// EmitInitialDebugFrame - Emit common frame info into a debug frame section.
///
-void DwarfWriter::EmitInitialDebugFrame() {
+void Dwarf::EmitInitialDebugFrame() {
int stackGrowth =
Asm->TM.getFrameInfo()->getStackGrowthDirection() ==
TargetFrameInfo::StackGrowsUp ?
@@ -2312,7 +2681,7 @@
/// EmitFunctionDebugFrame - Emit per function frame info into a debug frame
/// section.
-void DwarfWriter::EmitFunctionDebugFrame() {
+void Dwarf::EmitFunctionDebugFrame() {
// Start the dwarf frame section.
Asm->SwitchToDataSection(TAI->getDwarfFrameSection(), 0);
@@ -2342,7 +2711,7 @@
/// EmitDebugPubNames - Emit visible names into a debug pubnames section.
///
-void DwarfWriter::EmitDebugPubNames() {
+void Dwarf::EmitDebugPubNames() {
// Start the dwarf pubnames section.
Asm->SwitchToDataSection(TAI->getDwarfPubNamesSection(), 0);
@@ -2387,7 +2756,7 @@
/// 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.
@@ -2409,7 +2778,7 @@
/// EmitDebugLoc - Emit visible names into a debug loc section.
///
-void DwarfWriter::EmitDebugLoc() {
+void Dwarf::EmitDebugLoc() {
// Start the dwarf loc section.
Asm->SwitchToDataSection(TAI->getDwarfLocSection(), 0);
@@ -2418,7 +2787,7 @@
/// EmitDebugARanges - Emit visible names into a debug aranges section.
///
-void DwarfWriter::EmitDebugARanges() {
+void Dwarf::EmitDebugARanges() {
// Start the dwarf aranges section.
Asm->SwitchToDataSection(TAI->getDwarfARangesSection(), 0);
@@ -2459,7 +2828,7 @@
/// EmitDebugRanges - Emit visible names into a debug ranges section.
///
-void DwarfWriter::EmitDebugRanges() {
+void Dwarf::EmitDebugRanges() {
// Start the dwarf ranges section.
Asm->SwitchToDataSection(TAI->getDwarfRangesSection(), 0);
@@ -2468,7 +2837,7 @@
/// EmitDebugMacInfo - Emit visible names into a debug macinfo section.
///
-void DwarfWriter::EmitDebugMacInfo() {
+void Dwarf::EmitDebugMacInfo() {
// Start the dwarf macinfo section.
Asm->SwitchToDataSection(TAI->getDwarfMacInfoSection(), 0);
@@ -2477,7 +2846,7 @@
/// 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) {
@@ -2488,7 +2857,7 @@
/// ConstructGlobalDIEs - Create DIEs for each of the externally visible global
/// variables.
-void DwarfWriter::ConstructGlobalDIEs() {
+void Dwarf::ConstructGlobalDIEs() {
std::vector<GlobalVariableDesc *> GlobalVariables =
DebugInfo->getAnchoredDescriptors<GlobalVariableDesc>(*M);
@@ -2500,7 +2869,7 @@
/// ConstructSubprogramDIEs - Create DIEs for each of the externally visible
/// subprograms.
-void DwarfWriter::ConstructSubprogramDIEs() {
+void Dwarf::ConstructSubprogramDIEs() {
std::vector<SubprogramDesc *> Subprograms =
DebugInfo->getAnchoredDescriptors<SubprogramDesc>(*M);
@@ -2511,10 +2880,10 @@
}
//===----------------------------------------------------------------------===//
-// 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)
@@ -2535,7 +2904,7 @@
, SectionMap()
, SectionSourceLines()
{}
-DwarfWriter::~DwarfWriter() {
+Dwarf::~Dwarf() {
for (unsigned i = 0, N = CompileUnits.size(); i < N; ++i) {
delete CompileUnits[i];
}
@@ -2543,7 +2912,7 @@
/// SetDebugInfo - Set DebugInfo when it's known that pass manager has
/// created it. Set by the target AsmPrinter.
-void DwarfWriter::SetDebugInfo(MachineDebugInfo *DI) {
+void Dwarf::SetDebugInfo(MachineDebugInfo *DI) {
// Make sure initial declarations are made.
if (!DebugInfo && DI->hasInfo()) {
DebugInfo = DI;
@@ -2568,7 +2937,7 @@
/// 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;
@@ -2577,7 +2946,7 @@
/// EndModule - Emit all Dwarf sections that should come after the content.
///
-void DwarfWriter::EndModule() {
+void Dwarf::EndModule() {
if (!ShouldEmitDwarf()) return;
EOL("Dwarf End Module");
@@ -2626,7 +2995,7 @@
/// BeginFunction - Gather pre-function debug information. Assumes being
/// emitted immediately after the function entry point.
-void DwarfWriter::BeginFunction(MachineFunction *MF) {
+void Dwarf::BeginFunction(MachineFunction *MF) {
this->MF = MF;
if (!ShouldEmitDwarf()) return;
@@ -2641,7 +3010,7 @@
/// EndFunction - Gather and emit post-function debug information.
///
-void DwarfWriter::EndFunction() {
+void Dwarf::EndFunction() {
if (!ShouldEmitDwarf()) return;
EOL("Dwarf End Function");
@@ -2668,9 +3037,51 @@
EmitFunctionDebugFrame();
// Reset the line numbers for the next function.
- // FIXME: move this to release memory of the debuginfo object.
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();
+}
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