1 //===-- llvm/CodeGen/DwarfWriter.cpp - Dwarf Framework ----------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file was developed by James M. Laskey and is distributed under the
6 // University of Illinois Open Source License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file contains support for writing dwarf debug info into asm files.
12 //===----------------------------------------------------------------------===//
14 #include "llvm/CodeGen/DwarfWriter.h"
16 #include "llvm/ADT/FoldingSet.h"
17 #include "llvm/ADT/StringExtras.h"
18 #include "llvm/ADT/UniqueVector.h"
19 #include "llvm/Module.h"
20 #include "llvm/Type.h"
21 #include "llvm/CodeGen/AsmPrinter.h"
22 #include "llvm/CodeGen/MachineDebugInfo.h"
23 #include "llvm/CodeGen/MachineFrameInfo.h"
24 #include "llvm/CodeGen/MachineLocation.h"
25 #include "llvm/Support/Dwarf.h"
26 #include "llvm/Support/CommandLine.h"
27 #include "llvm/Support/DataTypes.h"
28 #include "llvm/Support/Mangler.h"
29 #include "llvm/Target/TargetAsmInfo.h"
30 #include "llvm/Target/MRegisterInfo.h"
31 #include "llvm/Target/TargetData.h"
32 #include "llvm/Target/TargetMachine.h"
33 #include "llvm/Target/TargetFrameInfo.h"
37 using namespace llvm::dwarf;
40 DwarfVerbose("dwarf-verbose", cl::Hidden,
41 cl::desc("Add comments to Dwarf directives."));
45 //===----------------------------------------------------------------------===//
47 /// Configuration values for initial hash set sizes (log2).
49 static const unsigned InitDiesSetSize = 9; // 512
50 static const unsigned InitAbbreviationsSetSize = 9; // 512
51 static const unsigned InitValuesSetSize = 9; // 512
53 //===----------------------------------------------------------------------===//
54 /// Forward declarations.
59 //===----------------------------------------------------------------------===//
60 /// LEB 128 number encoding.
62 /// PrintULEB128 - Print a series of hexidecimal values (separated by commas)
63 /// representing an unsigned leb128 value.
64 static void PrintULEB128(std::ostream &O, unsigned Value) {
66 unsigned Byte = Value & 0x7f;
68 if (Value) Byte |= 0x80;
69 O << "0x" << std::hex << Byte << std::dec;
74 /// SizeULEB128 - Compute the number of bytes required for an unsigned leb128
76 static unsigned SizeULEB128(unsigned Value) {
80 Size += sizeof(int8_t);
85 /// PrintSLEB128 - Print a series of hexidecimal values (separated by commas)
86 /// representing a signed leb128 value.
87 static void PrintSLEB128(std::ostream &O, int Value) {
88 int Sign = Value >> (8 * sizeof(Value) - 1);
92 unsigned Byte = Value & 0x7f;
94 IsMore = Value != Sign || ((Byte ^ Sign) & 0x40) != 0;
95 if (IsMore) Byte |= 0x80;
96 O << "0x" << std::hex << Byte << std::dec;
97 if (IsMore) O << ", ";
101 /// SizeSLEB128 - Compute the number of bytes required for a signed leb128
103 static unsigned SizeSLEB128(int Value) {
105 int Sign = Value >> (8 * sizeof(Value) - 1);
109 unsigned Byte = Value & 0x7f;
111 IsMore = Value != Sign || ((Byte ^ Sign) & 0x40) != 0;
112 Size += sizeof(int8_t);
117 //===----------------------------------------------------------------------===//
118 /// DWLabel - Labels are used to track locations in the assembler file.
119 /// Labels appear in the form <prefix>debug_<Tag><Number>, where the tag is a
120 /// category of label (Ex. location) and number is a value unique in that
124 /// Tag - Label category tag. Should always be a staticly declared C string.
128 /// Number - Value to make label unique.
132 DWLabel(const char *T, unsigned N) : Tag(T), Number(N) {}
134 void Profile(FoldingSetNodeID &ID) const {
135 ID.AddString(std::string(Tag));
136 ID.AddInteger(Number);
140 void print(std::ostream *O) const {
143 void print(std::ostream &O) const {
144 O << ".debug_" << Tag;
145 if (Number) O << Number;
150 //===----------------------------------------------------------------------===//
151 /// DIEAbbrevData - Dwarf abbreviation data, describes the one attribute of a
152 /// Dwarf abbreviation.
153 class DIEAbbrevData {
155 /// Attribute - Dwarf attribute code.
159 /// Form - Dwarf form code.
164 DIEAbbrevData(unsigned A, unsigned F)
170 unsigned getAttribute() const { return Attribute; }
171 unsigned getForm() const { return Form; }
173 /// Profile - Used to gather unique data for the abbreviation folding set.
175 void Profile(FoldingSetNodeID &ID)const {
176 ID.AddInteger(Attribute);
181 //===----------------------------------------------------------------------===//
182 /// DIEAbbrev - Dwarf abbreviation, describes the organization of a debug
183 /// information object.
184 class DIEAbbrev : public FoldingSetNode {
186 /// Tag - Dwarf tag code.
190 /// Unique number for node.
194 /// ChildrenFlag - Dwarf children flag.
196 unsigned ChildrenFlag;
198 /// Data - Raw data bytes for abbreviation.
200 std::vector<DIEAbbrevData> Data;
204 DIEAbbrev(unsigned T, unsigned C)
212 unsigned getTag() const { return Tag; }
213 unsigned getNumber() const { return Number; }
214 unsigned getChildrenFlag() const { return ChildrenFlag; }
215 const std::vector<DIEAbbrevData> &getData() const { return Data; }
216 void setTag(unsigned T) { Tag = T; }
217 void setChildrenFlag(unsigned CF) { ChildrenFlag = CF; }
218 void setNumber(unsigned N) { Number = N; }
220 /// AddAttribute - Adds another set of attribute information to the
222 void AddAttribute(unsigned Attribute, unsigned Form) {
223 Data.push_back(DIEAbbrevData(Attribute, Form));
226 /// AddFirstAttribute - Adds a set of attribute information to the front
227 /// of the abbreviation.
228 void AddFirstAttribute(unsigned Attribute, unsigned Form) {
229 Data.insert(Data.begin(), DIEAbbrevData(Attribute, Form));
232 /// Profile - Used to gather unique data for the abbreviation folding set.
234 void Profile(FoldingSetNodeID &ID) {
236 ID.AddInteger(ChildrenFlag);
238 // For each attribute description.
239 for (unsigned i = 0, N = Data.size(); i < N; ++i)
243 /// Emit - Print the abbreviation using the specified Dwarf writer.
245 void Emit(const Dwarf &DW) const;
248 void print(std::ostream *O) {
251 void print(std::ostream &O);
256 //===----------------------------------------------------------------------===//
257 /// DIE - A structured debug information entry. Has an abbreviation which
258 /// describes it's organization.
259 class DIE : public FoldingSetNode {
261 /// Abbrev - Buffer for constructing abbreviation.
265 /// Offset - Offset in debug info section.
269 /// Size - Size of instance + children.
275 std::vector<DIE *> Children;
277 /// Attributes values.
279 std::vector<DIEValue *> Values;
283 : Abbrev(Tag, DW_CHILDREN_no)
292 DIEAbbrev &getAbbrev() { return Abbrev; }
293 unsigned getAbbrevNumber() const {
294 return Abbrev.getNumber();
296 unsigned getTag() const { return Abbrev.getTag(); }
297 unsigned getOffset() const { return Offset; }
298 unsigned getSize() const { return Size; }
299 const std::vector<DIE *> &getChildren() const { return Children; }
300 const std::vector<DIEValue *> &getValues() const { return Values; }
301 void setTag(unsigned Tag) { Abbrev.setTag(Tag); }
302 void setOffset(unsigned O) { Offset = O; }
303 void setSize(unsigned S) { Size = S; }
305 /// AddValue - Add a value and attributes to a DIE.
307 void AddValue(unsigned Attribute, unsigned Form, DIEValue *Value) {
308 Abbrev.AddAttribute(Attribute, Form);
309 Values.push_back(Value);
312 /// SiblingOffset - Return the offset of the debug information entry's
314 unsigned SiblingOffset() const { return Offset + Size; }
316 /// AddSiblingOffset - Add a sibling offset field to the front of the DIE.
318 void AddSiblingOffset();
320 /// AddChild - Add a child to the DIE.
322 void AddChild(DIE *Child) {
323 Abbrev.setChildrenFlag(DW_CHILDREN_yes);
324 Children.push_back(Child);
327 /// Detach - Detaches objects connected to it after copying.
333 /// Profile - Used to gather unique data for the value folding set.
335 void Profile(FoldingSetNodeID &ID) ;
338 void print(std::ostream *O, unsigned IncIndent = 0) {
339 if (O) print(*O, IncIndent);
341 void print(std::ostream &O, unsigned IncIndent = 0);
346 //===----------------------------------------------------------------------===//
347 /// DIEValue - A debug information entry value.
349 class DIEValue : public FoldingSetNode {
361 /// Type - Type of data stored in the value.
368 virtual ~DIEValue() {}
371 unsigned getType() const { return Type; }
373 // Implement isa/cast/dyncast.
374 static bool classof(const DIEValue *) { return true; }
376 /// EmitValue - Emit value via the Dwarf writer.
378 virtual void EmitValue(const Dwarf &DW, unsigned Form) const = 0;
380 /// SizeOf - Return the size of a value in bytes.
382 virtual unsigned SizeOf(const Dwarf &DW, unsigned Form) const = 0;
384 /// Profile - Used to gather unique data for the value folding set.
386 virtual void Profile(FoldingSetNodeID &ID) = 0;
389 void print(std::ostream *O) {
392 virtual void print(std::ostream &O) = 0;
397 //===----------------------------------------------------------------------===//
398 /// DWInteger - An integer value DIE.
400 class DIEInteger : public DIEValue {
405 DIEInteger(uint64_t I) : DIEValue(isInteger), Integer(I) {}
407 // Implement isa/cast/dyncast.
408 static bool classof(const DIEInteger *) { return true; }
409 static bool classof(const DIEValue *I) { return I->Type == isInteger; }
411 /// BestForm - Choose the best form for integer.
413 static unsigned BestForm(bool IsSigned, uint64_t Integer) {
415 if ((char)Integer == (signed)Integer) return DW_FORM_data1;
416 if ((short)Integer == (signed)Integer) return DW_FORM_data2;
417 if ((int)Integer == (signed)Integer) return DW_FORM_data4;
419 if ((unsigned char)Integer == Integer) return DW_FORM_data1;
420 if ((unsigned short)Integer == Integer) return DW_FORM_data2;
421 if ((unsigned int)Integer == Integer) return DW_FORM_data4;
423 return DW_FORM_data8;
426 /// EmitValue - Emit integer of appropriate size.
428 virtual void EmitValue(const Dwarf &DW, unsigned Form) const;
430 /// SizeOf - Determine size of integer value in bytes.
432 virtual unsigned SizeOf(const Dwarf &DW, unsigned Form) const {
434 case DW_FORM_flag: // Fall thru
435 case DW_FORM_ref1: // Fall thru
436 case DW_FORM_data1: return sizeof(int8_t);
437 case DW_FORM_ref2: // Fall thru
438 case DW_FORM_data2: return sizeof(int16_t);
439 case DW_FORM_ref4: // Fall thru
440 case DW_FORM_data4: return sizeof(int32_t);
441 case DW_FORM_ref8: // Fall thru
442 case DW_FORM_data8: return sizeof(int64_t);
443 case DW_FORM_udata: return SizeULEB128(Integer);
444 case DW_FORM_sdata: return SizeSLEB128(Integer);
445 default: assert(0 && "DIE Value form not supported yet"); break;
450 /// Profile - Used to gather unique data for the value folding set.
452 static void Profile(FoldingSetNodeID &ID, unsigned Integer) {
453 ID.AddInteger(isInteger);
454 ID.AddInteger(Integer);
456 virtual void Profile(FoldingSetNodeID &ID) { Profile(ID, Integer); }
459 virtual void print(std::ostream &O) {
460 O << "Int: " << (int64_t)Integer
461 << " 0x" << std::hex << Integer << std::dec;
466 //===----------------------------------------------------------------------===//
467 /// DIEString - A string value DIE.
469 class DIEString : public DIEValue {
471 const std::string String;
473 DIEString(const std::string &S) : DIEValue(isString), String(S) {}
475 // Implement isa/cast/dyncast.
476 static bool classof(const DIEString *) { return true; }
477 static bool classof(const DIEValue *S) { return S->Type == isString; }
479 /// EmitValue - Emit string value.
481 virtual void EmitValue(const Dwarf &DW, unsigned Form) const;
483 /// SizeOf - Determine size of string value in bytes.
485 virtual unsigned SizeOf(const Dwarf &DW, unsigned Form) const {
486 return String.size() + sizeof(char); // sizeof('\0');
489 /// Profile - Used to gather unique data for the value folding set.
491 static void Profile(FoldingSetNodeID &ID, const std::string &String) {
492 ID.AddInteger(isString);
493 ID.AddString(String);
495 virtual void Profile(FoldingSetNodeID &ID) { Profile(ID, String); }
498 virtual void print(std::ostream &O) {
499 O << "Str: \"" << String << "\"";
504 //===----------------------------------------------------------------------===//
505 /// DIEDwarfLabel - A Dwarf internal label expression DIE.
507 class DIEDwarfLabel : public DIEValue {
512 DIEDwarfLabel(const DWLabel &L) : DIEValue(isLabel), Label(L) {}
514 // Implement isa/cast/dyncast.
515 static bool classof(const DIEDwarfLabel *) { return true; }
516 static bool classof(const DIEValue *L) { return L->Type == isLabel; }
518 /// EmitValue - Emit label value.
520 virtual void EmitValue(const Dwarf &DW, unsigned Form) const;
522 /// SizeOf - Determine size of label value in bytes.
524 virtual unsigned SizeOf(const Dwarf &DW, unsigned Form) const;
526 /// Profile - Used to gather unique data for the value folding set.
528 static void Profile(FoldingSetNodeID &ID, const DWLabel &Label) {
529 ID.AddInteger(isLabel);
532 virtual void Profile(FoldingSetNodeID &ID) { Profile(ID, Label); }
535 virtual void print(std::ostream &O) {
543 //===----------------------------------------------------------------------===//
544 /// DIEObjectLabel - A label to an object in code or data.
546 class DIEObjectLabel : public DIEValue {
548 const std::string Label;
550 DIEObjectLabel(const std::string &L) : DIEValue(isAsIsLabel), Label(L) {}
552 // Implement isa/cast/dyncast.
553 static bool classof(const DIEObjectLabel *) { return true; }
554 static bool classof(const DIEValue *L) { return L->Type == isAsIsLabel; }
556 /// EmitValue - Emit label value.
558 virtual void EmitValue(const Dwarf &DW, unsigned Form) const;
560 /// SizeOf - Determine size of label value in bytes.
562 virtual unsigned SizeOf(const Dwarf &DW, unsigned Form) const;
564 /// Profile - Used to gather unique data for the value folding set.
566 static void Profile(FoldingSetNodeID &ID, const std::string &Label) {
567 ID.AddInteger(isAsIsLabel);
570 virtual void Profile(FoldingSetNodeID &ID) { Profile(ID, Label); }
573 virtual void print(std::ostream &O) {
574 O << "Obj: " << Label;
579 //===----------------------------------------------------------------------===//
580 /// DIEDelta - A simple label difference DIE.
582 class DIEDelta : public DIEValue {
584 const DWLabel LabelHi;
585 const DWLabel LabelLo;
587 DIEDelta(const DWLabel &Hi, const DWLabel &Lo)
588 : DIEValue(isDelta), LabelHi(Hi), LabelLo(Lo) {}
590 // Implement isa/cast/dyncast.
591 static bool classof(const DIEDelta *) { return true; }
592 static bool classof(const DIEValue *D) { return D->Type == isDelta; }
594 /// EmitValue - Emit delta value.
596 virtual void EmitValue(const Dwarf &DW, unsigned Form) const;
598 /// SizeOf - Determine size of delta value in bytes.
600 virtual unsigned SizeOf(const Dwarf &DW, unsigned Form) const;
602 /// Profile - Used to gather unique data for the value folding set.
604 static void Profile(FoldingSetNodeID &ID, const DWLabel &LabelHi,
605 const DWLabel &LabelLo) {
606 ID.AddInteger(isDelta);
610 virtual void Profile(FoldingSetNodeID &ID) { Profile(ID, LabelHi, LabelLo); }
613 virtual void print(std::ostream &O) {
622 //===----------------------------------------------------------------------===//
623 /// DIEntry - A pointer to another debug information entry. An instance of this
624 /// class can also be used as a proxy for a debug information entry not yet
625 /// defined (ie. types.)
626 class DIEntry : public DIEValue {
630 DIEntry(DIE *E) : DIEValue(isEntry), Entry(E) {}
632 // Implement isa/cast/dyncast.
633 static bool classof(const DIEntry *) { return true; }
634 static bool classof(const DIEValue *E) { return E->Type == isEntry; }
636 /// EmitValue - Emit debug information entry offset.
638 virtual void EmitValue(const Dwarf &DW, unsigned Form) const;
640 /// SizeOf - Determine size of debug information entry in bytes.
642 virtual unsigned SizeOf(const Dwarf &DW, unsigned Form) const {
643 return sizeof(int32_t);
646 /// Profile - Used to gather unique data for the value folding set.
648 static void Profile(FoldingSetNodeID &ID, DIE *Entry) {
649 ID.AddInteger(isEntry);
650 ID.AddPointer(Entry);
652 virtual void Profile(FoldingSetNodeID &ID) {
653 ID.AddInteger(isEntry);
656 ID.AddPointer(Entry);
663 virtual void print(std::ostream &O) {
664 O << "Die: 0x" << std::hex << (intptr_t)Entry << std::dec;
669 //===----------------------------------------------------------------------===//
670 /// DIEBlock - A block of values. Primarily used for location expressions.
672 class DIEBlock : public DIEValue, public DIE {
674 unsigned Size; // Size in bytes excluding size header.
684 // Implement isa/cast/dyncast.
685 static bool classof(const DIEBlock *) { return true; }
686 static bool classof(const DIEValue *E) { return E->Type == isBlock; }
688 /// ComputeSize - calculate the size of the block.
690 unsigned ComputeSize(Dwarf &DW);
692 /// BestForm - Choose the best form for data.
694 unsigned BestForm() const {
695 if ((unsigned char)Size == Size) return DW_FORM_block1;
696 if ((unsigned short)Size == Size) return DW_FORM_block2;
697 if ((unsigned int)Size == Size) return DW_FORM_block4;
698 return DW_FORM_block;
701 /// EmitValue - Emit block data.
703 virtual void EmitValue(const Dwarf &DW, unsigned Form) const;
705 /// SizeOf - Determine size of block data in bytes.
707 virtual unsigned SizeOf(const Dwarf &DW, unsigned Form) const;
710 /// Profile - Used to gather unique data for the value folding set.
712 virtual void Profile(FoldingSetNodeID &ID) {
713 ID.AddInteger(isBlock);
718 virtual void print(std::ostream &O) {
725 //===----------------------------------------------------------------------===//
726 /// CompileUnit - This dwarf writer support class manages information associate
727 /// with a source file.
730 /// Desc - Compile unit debug descriptor.
732 CompileUnitDesc *Desc;
734 /// ID - File identifier for source.
738 /// Die - Compile unit debug information entry.
742 /// DescToDieMap - Tracks the mapping of unit level debug informaton
743 /// descriptors to debug information entries.
744 std::map<DebugInfoDesc *, DIE *> DescToDieMap;
746 /// DescToDIEntryMap - Tracks the mapping of unit level debug informaton
747 /// descriptors to debug information entries using a DIEntry proxy.
748 std::map<DebugInfoDesc *, DIEntry *> DescToDIEntryMap;
750 /// Globals - A map of globally visible named entities for this unit.
752 std::map<std::string, DIE *> Globals;
754 /// DiesSet - Used to uniquely define dies within the compile unit.
756 FoldingSet<DIE> DiesSet;
758 /// Dies - List of all dies in the compile unit.
760 std::vector<DIE *> Dies;
763 CompileUnit(CompileUnitDesc *CUD, unsigned I, DIE *D)
770 , DiesSet(InitDiesSetSize)
777 for (unsigned i = 0, N = Dies.size(); i < N; ++i)
782 CompileUnitDesc *getDesc() const { return Desc; }
783 unsigned getID() const { return ID; }
784 DIE* getDie() const { return Die; }
785 std::map<std::string, DIE *> &getGlobals() { return Globals; }
787 /// hasContent - Return true if this compile unit has something to write out.
789 bool hasContent() const {
790 return !Die->getChildren().empty();
793 /// AddGlobal - Add a new global entity to the compile unit.
795 void AddGlobal(const std::string &Name, DIE *Die) {
799 /// getDieMapSlotFor - Returns the debug information entry map slot for the
800 /// specified debug descriptor.
801 DIE *&getDieMapSlotFor(DebugInfoDesc *DD) {
802 return DescToDieMap[DD];
805 /// getDIEntrySlotFor - Returns the debug information entry proxy slot for the
806 /// specified debug descriptor.
807 DIEntry *&getDIEntrySlotFor(DebugInfoDesc *DD) {
808 return DescToDIEntryMap[DD];
811 /// AddDie - Adds or interns the DIE to the compile unit.
813 DIE *AddDie(DIE &Buffer) {
817 DIE *Die = DiesSet.FindNodeOrInsertPos(ID, Where);
820 Die = new DIE(Buffer);
821 DiesSet.InsertNode(Die, Where);
822 this->Die->AddChild(Die);
830 //===----------------------------------------------------------------------===//
831 /// Dwarf - Emits Dwarf debug and exception handling directives.
837 //===--------------------------------------------------------------------===//
838 // Core attributes used by the Dwarf writer.
842 /// O - Stream to .s file.
846 /// Asm - Target of Dwarf emission.
850 /// TAI - Target Asm Printer.
851 const TargetAsmInfo *TAI;
853 /// TD - Target data.
854 const TargetData *TD;
856 /// RI - Register Information.
857 const MRegisterInfo *RI;
859 /// M - Current module.
863 /// MF - Current machine function.
867 /// DebugInfo - Collected debug information.
869 MachineDebugInfo *DebugInfo;
871 /// didInitial - Flag to indicate if initial emission has been done.
875 /// shouldEmit - Flag to indicate if debug information should be emitted.
879 /// SubprogramCount - The running count of functions being compiled.
881 unsigned SubprogramCount;
883 //===--------------------------------------------------------------------===//
884 // Attributes used to construct specific Dwarf sections.
887 /// CompileUnits - All the compile units involved in this build. The index
888 /// of each entry in this vector corresponds to the sources in DebugInfo.
889 std::vector<CompileUnit *> CompileUnits;
891 /// AbbreviationsSet - Used to uniquely define abbreviations.
893 FoldingSet<DIEAbbrev> AbbreviationsSet;
895 /// Abbreviations - A list of all the unique abbreviations in use.
897 std::vector<DIEAbbrev *> Abbreviations;
899 /// ValuesSet - Used to uniquely define values.
901 FoldingSet<DIEValue> ValuesSet;
903 /// Values - A list of all the unique values in use.
905 std::vector<DIEValue *> Values;
907 /// StringPool - A UniqueVector of strings used by indirect references.
909 UniqueVector<std::string> StringPool;
911 /// UnitMap - Map debug information descriptor to compile unit.
913 std::map<DebugInfoDesc *, CompileUnit *> DescToUnitMap;
915 /// SectionMap - Provides a unique id per text section.
917 UniqueVector<std::string> SectionMap;
919 /// SectionSourceLines - Tracks line numbers per text section.
921 std::vector<std::vector<SourceLineInfo> > SectionSourceLines;
926 //===--------------------------------------------------------------------===//
927 // Emission and print routines
930 /// PrintHex - Print a value as a hexidecimal value.
932 void PrintHex(int Value) const {
933 O << "0x" << std::hex << Value << std::dec;
936 /// EOL - Print a newline character to asm stream. If a comment is present
937 /// then it will be printed first. Comments should not contain '\n'.
938 void EOL(const std::string &Comment) const {
939 if (DwarfVerbose && !Comment.empty()) {
941 << TAI->getCommentString()
948 /// EmitULEB128Bytes - Emit an assembler byte data directive to compose an
949 /// unsigned leb128 value.
950 void EmitULEB128Bytes(unsigned Value) const {
951 if (TAI->hasLEB128()) {
955 O << TAI->getData8bitsDirective();
956 PrintULEB128(O, Value);
960 /// EmitSLEB128Bytes - print an assembler byte data directive to compose a
961 /// signed leb128 value.
962 void EmitSLEB128Bytes(int Value) const {
963 if (TAI->hasLEB128()) {
967 O << TAI->getData8bitsDirective();
968 PrintSLEB128(O, Value);
972 /// EmitInt8 - Emit a byte directive and value.
974 void EmitInt8(int Value) const {
975 O << TAI->getData8bitsDirective();
976 PrintHex(Value & 0xFF);
979 /// EmitInt16 - Emit a short directive and value.
981 void EmitInt16(int Value) const {
982 O << TAI->getData16bitsDirective();
983 PrintHex(Value & 0xFFFF);
986 /// EmitInt32 - Emit a long directive and value.
988 void EmitInt32(int Value) const {
989 O << TAI->getData32bitsDirective();
993 /// EmitInt64 - Emit a long long directive and value.
995 void EmitInt64(uint64_t Value) const {
996 if (TAI->getData64bitsDirective()) {
997 O << TAI->getData64bitsDirective();
1000 if (TD->isBigEndian()) {
1001 EmitInt32(unsigned(Value >> 32)); O << "\n";
1002 EmitInt32(unsigned(Value));
1004 EmitInt32(unsigned(Value)); O << "\n";
1005 EmitInt32(unsigned(Value >> 32));
1010 /// EmitString - Emit a string with quotes and a null terminator.
1011 /// Special characters are emitted properly.
1012 /// \literal (Eg. '\t') \endliteral
1013 void EmitString(const std::string &String) const {
1014 O << TAI->getAsciiDirective()
1016 for (unsigned i = 0, N = String.size(); i < N; ++i) {
1017 unsigned char C = String[i];
1019 if (!isascii(C) || iscntrl(C)) {
1021 case '\b': O << "\\b"; break;
1022 case '\f': O << "\\f"; break;
1023 case '\n': O << "\\n"; break;
1024 case '\r': O << "\\r"; break;
1025 case '\t': O << "\\t"; break;
1028 O << char('0' + ((C >> 6) & 7));
1029 O << char('0' + ((C >> 3) & 7));
1030 O << char('0' + ((C >> 0) & 7));
1033 } else if (C == '\"') {
1035 } else if (C == '\'') {
1044 /// PrintLabelName - Print label name in form used by Dwarf writer.
1046 void PrintLabelName(DWLabel Label) const {
1047 PrintLabelName(Label.Tag, Label.Number);
1049 void PrintLabelName(const char *Tag, unsigned Number) const {
1050 O << TAI->getPrivateGlobalPrefix()
1053 if (Number) O << Number;
1056 /// EmitLabel - Emit location label for internal use by Dwarf.
1058 void EmitLabel(DWLabel Label) const {
1059 EmitLabel(Label.Tag, Label.Number);
1061 void EmitLabel(const char *Tag, unsigned Number) const {
1062 PrintLabelName(Tag, Number);
1066 /// EmitReference - Emit a reference to a label.
1068 void EmitReference(DWLabel Label) const {
1069 EmitReference(Label.Tag, Label.Number);
1071 void EmitReference(const char *Tag, unsigned Number) const {
1072 if (TAI->getAddressSize() == 4)
1073 O << TAI->getData32bitsDirective();
1075 O << TAI->getData64bitsDirective();
1077 PrintLabelName(Tag, Number);
1079 void EmitReference(const std::string &Name) const {
1080 if (TAI->getAddressSize() == 4)
1081 O << TAI->getData32bitsDirective();
1083 O << TAI->getData64bitsDirective();
1088 /// EmitDifference - Emit the difference between two labels. Some
1089 /// assemblers do not behave with absolute expressions with data directives,
1090 /// so there is an option (needsSet) to use an intermediary set expression.
1091 void EmitDifference(DWLabel LabelHi, DWLabel LabelLo,
1092 bool IsSmall = false) const {
1093 EmitDifference(LabelHi.Tag, LabelHi.Number,
1094 LabelLo.Tag, LabelLo.Number,
1097 void EmitDifference(const char *TagHi, unsigned NumberHi,
1098 const char *TagLo, unsigned NumberLo,
1099 bool IsSmall = false) const {
1100 if (TAI->needsSet()) {
1101 static unsigned SetCounter = 0;
1104 PrintLabelName("set", SetCounter);
1106 PrintLabelName(TagHi, NumberHi);
1108 PrintLabelName(TagLo, NumberLo);
1111 if (IsSmall || TAI->getAddressSize() == sizeof(int32_t))
1112 O << TAI->getData32bitsDirective();
1114 O << TAI->getData64bitsDirective();
1116 PrintLabelName("set", SetCounter);
1120 if (IsSmall || TAI->getAddressSize() == sizeof(int32_t))
1121 O << TAI->getData32bitsDirective();
1123 O << TAI->getData64bitsDirective();
1125 PrintLabelName(TagHi, NumberHi);
1127 PrintLabelName(TagLo, NumberLo);
1131 /// AssignAbbrevNumber - Define a unique number for the abbreviation.
1133 void AssignAbbrevNumber(DIEAbbrev &Abbrev) {
1134 // Profile the node so that we can make it unique.
1135 FoldingSetNodeID ID;
1138 // Check the set for priors.
1139 DIEAbbrev *InSet = AbbreviationsSet.GetOrInsertNode(&Abbrev);
1141 // If it's newly added.
1142 if (InSet == &Abbrev) {
1143 // Add to abbreviation list.
1144 Abbreviations.push_back(&Abbrev);
1145 // Assign the vector position + 1 as its number.
1146 Abbrev.setNumber(Abbreviations.size());
1148 // Assign existing abbreviation number.
1149 Abbrev.setNumber(InSet->getNumber());
1153 /// NewString - Add a string to the constant pool and returns a label.
1155 DWLabel NewString(const std::string &String) {
1156 unsigned StringID = StringPool.insert(String);
1157 return DWLabel("string", StringID);
1160 /// NewDIEntry - Creates a new DIEntry to be a proxy for a debug information
1162 DIEntry *NewDIEntry(DIE *Entry = NULL) {
1166 FoldingSetNodeID ID;
1167 DIEntry::Profile(ID, Entry);
1169 Value = static_cast<DIEntry *>(ValuesSet.FindNodeOrInsertPos(ID, Where));
1171 if (Value) return Value;
1173 Value = new DIEntry(Entry);
1174 ValuesSet.InsertNode(Value, Where);
1176 Value = new DIEntry(Entry);
1179 Values.push_back(Value);
1183 /// SetDIEntry - Set a DIEntry once the debug information entry is defined.
1185 void SetDIEntry(DIEntry *Value, DIE *Entry) {
1186 Value->Entry = Entry;
1187 // Add to values set if not already there. If it is, we merely have a
1188 // duplicate in the values list (no harm.)
1189 ValuesSet.GetOrInsertNode(Value);
1192 /// AddUInt - Add an unsigned integer attribute data and value.
1194 void AddUInt(DIE *Die, unsigned Attribute, unsigned Form, uint64_t Integer) {
1195 if (!Form) Form = DIEInteger::BestForm(false, Integer);
1197 FoldingSetNodeID ID;
1198 DIEInteger::Profile(ID, Integer);
1200 DIEValue *Value = ValuesSet.FindNodeOrInsertPos(ID, Where);
1202 Value = new DIEInteger(Integer);
1203 ValuesSet.InsertNode(Value, Where);
1204 Values.push_back(Value);
1207 Die->AddValue(Attribute, Form, Value);
1210 /// AddSInt - Add an signed integer attribute data and value.
1212 void AddSInt(DIE *Die, unsigned Attribute, unsigned Form, int64_t Integer) {
1213 if (!Form) Form = DIEInteger::BestForm(true, Integer);
1215 FoldingSetNodeID ID;
1216 DIEInteger::Profile(ID, (uint64_t)Integer);
1218 DIEValue *Value = ValuesSet.FindNodeOrInsertPos(ID, Where);
1220 Value = new DIEInteger(Integer);
1221 ValuesSet.InsertNode(Value, Where);
1222 Values.push_back(Value);
1225 Die->AddValue(Attribute, Form, Value);
1228 /// AddString - Add a std::string attribute data and value.
1230 void AddString(DIE *Die, unsigned Attribute, unsigned Form,
1231 const std::string &String) {
1232 FoldingSetNodeID ID;
1233 DIEString::Profile(ID, String);
1235 DIEValue *Value = ValuesSet.FindNodeOrInsertPos(ID, Where);
1237 Value = new DIEString(String);
1238 ValuesSet.InsertNode(Value, Where);
1239 Values.push_back(Value);
1242 Die->AddValue(Attribute, Form, Value);
1245 /// AddLabel - Add a Dwarf label attribute data and value.
1247 void AddLabel(DIE *Die, unsigned Attribute, unsigned Form,
1248 const DWLabel &Label) {
1249 FoldingSetNodeID ID;
1250 DIEDwarfLabel::Profile(ID, Label);
1252 DIEValue *Value = ValuesSet.FindNodeOrInsertPos(ID, Where);
1254 Value = new DIEDwarfLabel(Label);
1255 ValuesSet.InsertNode(Value, Where);
1256 Values.push_back(Value);
1259 Die->AddValue(Attribute, Form, Value);
1262 /// AddObjectLabel - Add an non-Dwarf label attribute data and value.
1264 void AddObjectLabel(DIE *Die, unsigned Attribute, unsigned Form,
1265 const std::string &Label) {
1266 FoldingSetNodeID ID;
1267 DIEObjectLabel::Profile(ID, Label);
1269 DIEValue *Value = ValuesSet.FindNodeOrInsertPos(ID, Where);
1271 Value = new DIEObjectLabel(Label);
1272 ValuesSet.InsertNode(Value, Where);
1273 Values.push_back(Value);
1276 Die->AddValue(Attribute, Form, Value);
1279 /// AddDelta - Add a label delta attribute data and value.
1281 void AddDelta(DIE *Die, unsigned Attribute, unsigned Form,
1282 const DWLabel &Hi, const DWLabel &Lo) {
1283 FoldingSetNodeID ID;
1284 DIEDelta::Profile(ID, Hi, Lo);
1286 DIEValue *Value = ValuesSet.FindNodeOrInsertPos(ID, Where);
1288 Value = new DIEDelta(Hi, Lo);
1289 ValuesSet.InsertNode(Value, Where);
1290 Values.push_back(Value);
1293 Die->AddValue(Attribute, Form, Value);
1296 /// AddDIEntry - Add a DIE attribute data and value.
1298 void AddDIEntry(DIE *Die, unsigned Attribute, unsigned Form, DIE *Entry) {
1299 Die->AddValue(Attribute, Form, NewDIEntry(Entry));
1302 /// AddBlock - Add block data.
1304 void AddBlock(DIE *Die, unsigned Attribute, unsigned Form, DIEBlock *Block) {
1305 Block->ComputeSize(*this);
1306 FoldingSetNodeID ID;
1309 DIEValue *Value = ValuesSet.FindNodeOrInsertPos(ID, Where);
1312 ValuesSet.InsertNode(Value, Where);
1313 Values.push_back(Value);
1318 Die->AddValue(Attribute, Block->BestForm(), Value);
1323 /// AddSourceLine - Add location information to specified debug information
1325 void AddSourceLine(DIE *Die, CompileUnitDesc *File, unsigned Line) {
1327 CompileUnit *FileUnit = FindCompileUnit(File);
1328 unsigned FileID = FileUnit->getID();
1329 AddUInt(Die, DW_AT_decl_file, 0, FileID);
1330 AddUInt(Die, DW_AT_decl_line, 0, Line);
1334 /// AddAddress - Add an address attribute to a die based on the location
1336 void AddAddress(DIE *Die, unsigned Attribute,
1337 const MachineLocation &Location) {
1338 unsigned Reg = RI->getDwarfRegNum(Location.getRegister());
1339 DIEBlock *Block = new DIEBlock();
1341 if (Location.isRegister()) {
1343 AddUInt(Block, 0, DW_FORM_data1, DW_OP_reg0 + Reg);
1345 AddUInt(Block, 0, DW_FORM_data1, DW_OP_regx);
1346 AddUInt(Block, 0, DW_FORM_udata, Reg);
1350 AddUInt(Block, 0, DW_FORM_data1, DW_OP_breg0 + Reg);
1352 AddUInt(Block, 0, DW_FORM_data1, DW_OP_bregx);
1353 AddUInt(Block, 0, DW_FORM_udata, Reg);
1355 AddUInt(Block, 0, DW_FORM_sdata, Location.getOffset());
1358 AddBlock(Die, Attribute, 0, Block);
1361 /// AddBasicType - Add a new basic type attribute to the specified entity.
1363 void AddBasicType(DIE *Entity, CompileUnit *Unit,
1364 const std::string &Name,
1365 unsigned Encoding, unsigned Size) {
1366 DIE *Die = ConstructBasicType(Unit, Name, Encoding, Size);
1367 AddDIEntry(Entity, DW_AT_type, DW_FORM_ref4, Die);
1370 /// ConstructBasicType - Construct a new basic type.
1372 DIE *ConstructBasicType(CompileUnit *Unit,
1373 const std::string &Name,
1374 unsigned Encoding, unsigned Size) {
1375 DIE Buffer(DW_TAG_base_type);
1376 AddUInt(&Buffer, DW_AT_byte_size, 0, Size);
1377 AddUInt(&Buffer, DW_AT_encoding, DW_FORM_data1, Encoding);
1378 if (!Name.empty()) AddString(&Buffer, DW_AT_name, DW_FORM_string, Name);
1379 return Unit->AddDie(Buffer);
1382 /// AddPointerType - Add a new pointer type attribute to the specified entity.
1384 void AddPointerType(DIE *Entity, CompileUnit *Unit, const std::string &Name) {
1385 DIE *Die = ConstructPointerType(Unit, Name);
1386 AddDIEntry(Entity, DW_AT_type, DW_FORM_ref4, Die);
1389 /// ConstructPointerType - Construct a new pointer type.
1391 DIE *ConstructPointerType(CompileUnit *Unit, const std::string &Name) {
1392 DIE Buffer(DW_TAG_pointer_type);
1393 AddUInt(&Buffer, DW_AT_byte_size, 0, TAI->getAddressSize());
1394 if (!Name.empty()) AddString(&Buffer, DW_AT_name, DW_FORM_string, Name);
1395 return Unit->AddDie(Buffer);
1398 /// AddType - Add a new type attribute to the specified entity.
1400 void AddType(DIE *Entity, TypeDesc *TyDesc, CompileUnit *Unit) {
1402 AddBasicType(Entity, Unit, "", DW_ATE_signed, 4);
1404 // Check for pre-existence.
1405 DIEntry *&Slot = Unit->getDIEntrySlotFor(TyDesc);
1407 // If it exists then use the existing value.
1409 Entity->AddValue(DW_AT_type, DW_FORM_ref4, Slot);
1413 if (SubprogramDesc *SubprogramTy = dyn_cast<SubprogramDesc>(TyDesc)) {
1414 // FIXME - Not sure why programs and variables are coming through here.
1415 // Short cut for handling subprogram types (not really a TyDesc.)
1416 AddPointerType(Entity, Unit, SubprogramTy->getName());
1417 } else if (GlobalVariableDesc *GlobalTy =
1418 dyn_cast<GlobalVariableDesc>(TyDesc)) {
1419 // FIXME - Not sure why programs and variables are coming through here.
1420 // Short cut for handling global variable types (not really a TyDesc.)
1421 AddPointerType(Entity, Unit, GlobalTy->getName());
1424 Slot = NewDIEntry();
1427 DIE Buffer(DW_TAG_base_type);
1428 ConstructType(Buffer, TyDesc, Unit);
1430 // Add debug information entry to entity and unit.
1431 DIE *Die = Unit->AddDie(Buffer);
1432 SetDIEntry(Slot, Die);
1433 Entity->AddValue(DW_AT_type, DW_FORM_ref4, Slot);
1438 /// ConstructType - Adds all the required attributes to the type.
1440 void ConstructType(DIE &Buffer, TypeDesc *TyDesc, CompileUnit *Unit) {
1441 // Get core information.
1442 const std::string &Name = TyDesc->getName();
1443 uint64_t Size = TyDesc->getSize() >> 3;
1445 if (BasicTypeDesc *BasicTy = dyn_cast<BasicTypeDesc>(TyDesc)) {
1446 // Fundamental types like int, float, bool
1447 Buffer.setTag(DW_TAG_base_type);
1448 AddUInt(&Buffer, DW_AT_encoding, DW_FORM_data1, BasicTy->getEncoding());
1449 } else if (DerivedTypeDesc *DerivedTy = dyn_cast<DerivedTypeDesc>(TyDesc)) {
1451 unsigned Tag = DerivedTy->getTag();
1452 // FIXME - Workaround for templates.
1453 if (Tag == DW_TAG_inheritance) Tag = DW_TAG_reference_type;
1454 // Pointers, typedefs et al.
1456 // Map to main type, void will not have a type.
1457 if (TypeDesc *FromTy = DerivedTy->getFromType())
1458 AddType(&Buffer, FromTy, Unit);
1459 } else if (CompositeTypeDesc *CompTy = dyn_cast<CompositeTypeDesc>(TyDesc)){
1461 unsigned Tag = CompTy->getTag();
1463 // Set tag accordingly.
1464 if (Tag == DW_TAG_vector_type)
1465 Buffer.setTag(DW_TAG_array_type);
1469 std::vector<DebugInfoDesc *> &Elements = CompTy->getElements();
1472 case DW_TAG_vector_type:
1473 AddUInt(&Buffer, DW_AT_GNU_vector, DW_FORM_flag, 1);
1475 case DW_TAG_array_type: {
1476 // Add element type.
1477 if (TypeDesc *FromTy = CompTy->getFromType())
1478 AddType(&Buffer, FromTy, Unit);
1480 // Don't emit size attribute.
1483 // Construct an anonymous type for index type.
1484 DIE *IndexTy = ConstructBasicType(Unit, "", DW_ATE_signed, 4);
1486 // Add subranges to array type.
1487 for(unsigned i = 0, N = Elements.size(); i < N; ++i) {
1488 SubrangeDesc *SRD = cast<SubrangeDesc>(Elements[i]);
1489 int64_t Lo = SRD->getLo();
1490 int64_t Hi = SRD->getHi();
1491 DIE *Subrange = new DIE(DW_TAG_subrange_type);
1493 // If a range is available.
1495 AddDIEntry(Subrange, DW_AT_type, DW_FORM_ref4, IndexTy);
1496 // Only add low if non-zero.
1497 if (Lo) AddSInt(Subrange, DW_AT_lower_bound, 0, Lo);
1498 AddSInt(Subrange, DW_AT_upper_bound, 0, Hi);
1501 Buffer.AddChild(Subrange);
1505 case DW_TAG_structure_type:
1506 case DW_TAG_union_type: {
1507 // Add elements to structure type.
1508 for(unsigned i = 0, N = Elements.size(); i < N; ++i) {
1509 DebugInfoDesc *Element = Elements[i];
1511 if (DerivedTypeDesc *MemberDesc = dyn_cast<DerivedTypeDesc>(Element)){
1512 // Add field or base class.
1514 unsigned Tag = MemberDesc->getTag();
1516 // Extract the basic information.
1517 const std::string &Name = MemberDesc->getName();
1518 uint64_t Size = MemberDesc->getSize();
1519 uint64_t Align = MemberDesc->getAlign();
1520 uint64_t Offset = MemberDesc->getOffset();
1522 // Construct member debug information entry.
1523 DIE *Member = new DIE(Tag);
1525 // Add name if not "".
1527 AddString(Member, DW_AT_name, DW_FORM_string, Name);
1528 // Add location if available.
1529 AddSourceLine(Member, MemberDesc->getFile(), MemberDesc->getLine());
1531 // Most of the time the field info is the same as the members.
1532 uint64_t FieldSize = Size;
1533 uint64_t FieldAlign = Align;
1534 uint64_t FieldOffset = Offset;
1536 // Set the member type.
1537 TypeDesc *FromTy = MemberDesc->getFromType();
1538 AddType(Member, FromTy, Unit);
1540 // Walk up typedefs until a real size is found.
1542 if (FromTy->getTag() != DW_TAG_typedef) {
1543 FieldSize = FromTy->getSize();
1544 FieldAlign = FromTy->getSize();
1548 FromTy = dyn_cast<DerivedTypeDesc>(FromTy)->getFromType();
1551 // Unless we have a bit field.
1552 if (Tag == DW_TAG_member && FieldSize != Size) {
1553 // Construct the alignment mask.
1554 uint64_t AlignMask = ~(FieldAlign - 1);
1555 // Determine the high bit + 1 of the declared size.
1556 uint64_t HiMark = (Offset + FieldSize) & AlignMask;
1557 // Work backwards to determine the base offset of the field.
1558 FieldOffset = HiMark - FieldSize;
1559 // Now normalize offset to the field.
1560 Offset -= FieldOffset;
1562 // Maybe we need to work from the other end.
1563 if (TD->isLittleEndian()) Offset = FieldSize - (Offset + Size);
1565 // Add size and offset.
1566 AddUInt(Member, DW_AT_byte_size, 0, FieldSize >> 3);
1567 AddUInt(Member, DW_AT_bit_size, 0, Size);
1568 AddUInt(Member, DW_AT_bit_offset, 0, Offset);
1571 // Add computation for offset.
1572 DIEBlock *Block = new DIEBlock();
1573 AddUInt(Block, 0, DW_FORM_data1, DW_OP_plus_uconst);
1574 AddUInt(Block, 0, DW_FORM_udata, FieldOffset >> 3);
1575 AddBlock(Member, DW_AT_data_member_location, 0, Block);
1577 // Add accessibility (public default unless is base class.
1578 if (MemberDesc->isProtected()) {
1579 AddUInt(Member, DW_AT_accessibility, 0, DW_ACCESS_protected);
1580 } else if (MemberDesc->isPrivate()) {
1581 AddUInt(Member, DW_AT_accessibility, 0, DW_ACCESS_private);
1582 } else if (Tag == DW_TAG_inheritance) {
1583 AddUInt(Member, DW_AT_accessibility, 0, DW_ACCESS_public);
1586 Buffer.AddChild(Member);
1587 } else if (GlobalVariableDesc *StaticDesc =
1588 dyn_cast<GlobalVariableDesc>(Element)) {
1589 // Add static member.
1591 // Construct member debug information entry.
1592 DIE *Static = new DIE(DW_TAG_variable);
1594 // Add name and mangled name.
1595 const std::string &Name = StaticDesc->getName();
1596 const std::string &LinkageName = StaticDesc->getLinkageName();
1597 AddString(Static, DW_AT_name, DW_FORM_string, Name);
1598 if (!LinkageName.empty()) {
1599 AddString(Static, DW_AT_MIPS_linkage_name, DW_FORM_string,
1604 AddSourceLine(Static, StaticDesc->getFile(), StaticDesc->getLine());
1607 if (TypeDesc *StaticTy = StaticDesc->getType())
1608 AddType(Static, StaticTy, Unit);
1611 if (!StaticDesc->isStatic())
1612 AddUInt(Static, DW_AT_external, DW_FORM_flag, 1);
1613 AddUInt(Static, DW_AT_declaration, DW_FORM_flag, 1);
1615 Buffer.AddChild(Static);
1616 } else if (SubprogramDesc *MethodDesc =
1617 dyn_cast<SubprogramDesc>(Element)) {
1618 // Add member function.
1620 // Construct member debug information entry.
1621 DIE *Method = new DIE(DW_TAG_subprogram);
1623 // Add name and mangled name.
1624 const std::string &Name = MethodDesc->getName();
1625 const std::string &LinkageName = MethodDesc->getLinkageName();
1627 AddString(Method, DW_AT_name, DW_FORM_string, Name);
1628 bool IsCTor = TyDesc->getName() == Name;
1630 if (!LinkageName.empty()) {
1631 AddString(Method, DW_AT_MIPS_linkage_name, DW_FORM_string,
1636 AddSourceLine(Method, MethodDesc->getFile(), MethodDesc->getLine());
1639 if (CompositeTypeDesc *MethodTy =
1640 dyn_cast_or_null<CompositeTypeDesc>(MethodDesc->getType())) {
1641 // Get argument information.
1642 std::vector<DebugInfoDesc *> &Args = MethodTy->getElements();
1647 AddType(Method, dyn_cast<TypeDesc>(Args[0]), Unit);
1651 for(unsigned i = 1, N = Args.size(); i < N; ++i) {
1652 DIE *Arg = new DIE(DW_TAG_formal_parameter);
1653 AddType(Arg, cast<TypeDesc>(Args[i]), Unit);
1654 AddUInt(Arg, DW_AT_artificial, DW_FORM_flag, 1);
1655 Method->AddChild(Arg);
1660 if (!MethodDesc->isStatic())
1661 AddUInt(Method, DW_AT_external, DW_FORM_flag, 1);
1662 AddUInt(Method, DW_AT_declaration, DW_FORM_flag, 1);
1664 Buffer.AddChild(Method);
1669 case DW_TAG_enumeration_type: {
1670 // Add enumerators to enumeration type.
1671 for(unsigned i = 0, N = Elements.size(); i < N; ++i) {
1672 EnumeratorDesc *ED = cast<EnumeratorDesc>(Elements[i]);
1673 const std::string &Name = ED->getName();
1674 int64_t Value = ED->getValue();
1675 DIE *Enumerator = new DIE(DW_TAG_enumerator);
1676 AddString(Enumerator, DW_AT_name, DW_FORM_string, Name);
1677 AddSInt(Enumerator, DW_AT_const_value, DW_FORM_sdata, Value);
1678 Buffer.AddChild(Enumerator);
1683 case DW_TAG_subroutine_type: {
1684 // Add prototype flag.
1685 AddUInt(&Buffer, DW_AT_prototyped, DW_FORM_flag, 1);
1687 AddType(&Buffer, dyn_cast<TypeDesc>(Elements[0]), Unit);
1690 for(unsigned i = 1, N = Elements.size(); i < N; ++i) {
1691 DIE *Arg = new DIE(DW_TAG_formal_parameter);
1692 AddType(Arg, cast<TypeDesc>(Elements[i]), Unit);
1693 Buffer.AddChild(Arg);
1702 // Add size if non-zero (derived types don't have a size.)
1703 if (Size) AddUInt(&Buffer, DW_AT_byte_size, 0, Size);
1704 // Add name if not anonymous or intermediate type.
1705 if (!Name.empty()) AddString(&Buffer, DW_AT_name, DW_FORM_string, Name);
1706 // Add source line info if available.
1707 AddSourceLine(&Buffer, TyDesc->getFile(), TyDesc->getLine());
1710 /// NewCompileUnit - Create new compile unit and it's debug information entry.
1712 CompileUnit *NewCompileUnit(CompileUnitDesc *UnitDesc, unsigned ID) {
1713 // Construct debug information entry.
1714 DIE *Die = new DIE(DW_TAG_compile_unit);
1715 AddDelta(Die, DW_AT_stmt_list, DW_FORM_data4, DWLabel("section_line", 0),
1716 DWLabel("section_line", 0));
1717 AddString(Die, DW_AT_producer, DW_FORM_string, UnitDesc->getProducer());
1718 AddUInt (Die, DW_AT_language, DW_FORM_data1, UnitDesc->getLanguage());
1719 AddString(Die, DW_AT_name, DW_FORM_string, UnitDesc->getFileName());
1720 AddString(Die, DW_AT_comp_dir, DW_FORM_string, UnitDesc->getDirectory());
1722 // Construct compile unit.
1723 CompileUnit *Unit = new CompileUnit(UnitDesc, ID, Die);
1725 // Add Unit to compile unit map.
1726 DescToUnitMap[UnitDesc] = Unit;
1731 /// GetBaseCompileUnit - Get the main compile unit.
1733 CompileUnit *GetBaseCompileUnit() const {
1734 CompileUnit *Unit = CompileUnits[0];
1735 assert(Unit && "Missing compile unit.");
1739 /// FindCompileUnit - Get the compile unit for the given descriptor.
1741 CompileUnit *FindCompileUnit(CompileUnitDesc *UnitDesc) {
1742 CompileUnit *Unit = DescToUnitMap[UnitDesc];
1743 assert(Unit && "Missing compile unit.");
1747 /// NewGlobalVariable - Add a new global variable DIE.
1749 DIE *NewGlobalVariable(GlobalVariableDesc *GVD) {
1750 // Get the compile unit context.
1751 CompileUnitDesc *UnitDesc =
1752 static_cast<CompileUnitDesc *>(GVD->getContext());
1753 CompileUnit *Unit = GetBaseCompileUnit();
1755 // Check for pre-existence.
1756 DIE *&Slot = Unit->getDieMapSlotFor(GVD);
1757 if (Slot) return Slot;
1759 // Get the global variable itself.
1760 GlobalVariable *GV = GVD->getGlobalVariable();
1762 const std::string &Name = GVD->getName();
1763 const std::string &FullName = GVD->getFullName();
1764 const std::string &LinkageName = GVD->getLinkageName();
1765 // Create the global's variable DIE.
1766 DIE *VariableDie = new DIE(DW_TAG_variable);
1767 AddString(VariableDie, DW_AT_name, DW_FORM_string, Name);
1768 if (!LinkageName.empty()) {
1769 AddString(VariableDie, DW_AT_MIPS_linkage_name, DW_FORM_string,
1772 AddType(VariableDie, GVD->getType(), Unit);
1773 if (!GVD->isStatic())
1774 AddUInt(VariableDie, DW_AT_external, DW_FORM_flag, 1);
1776 // Add source line info if available.
1777 AddSourceLine(VariableDie, UnitDesc, GVD->getLine());
1780 DIEBlock *Block = new DIEBlock();
1781 AddUInt(Block, 0, DW_FORM_data1, DW_OP_addr);
1782 AddObjectLabel(Block, 0, DW_FORM_udata, Asm->getGlobalLinkName(GV));
1783 AddBlock(VariableDie, DW_AT_location, 0, Block);
1788 // Add to context owner.
1789 Unit->getDie()->AddChild(VariableDie);
1791 // Expose as global.
1792 // FIXME - need to check external flag.
1793 Unit->AddGlobal(FullName, VariableDie);
1798 /// NewSubprogram - Add a new subprogram DIE.
1800 DIE *NewSubprogram(SubprogramDesc *SPD) {
1801 // Get the compile unit context.
1802 CompileUnitDesc *UnitDesc =
1803 static_cast<CompileUnitDesc *>(SPD->getContext());
1804 CompileUnit *Unit = GetBaseCompileUnit();
1806 // Check for pre-existence.
1807 DIE *&Slot = Unit->getDieMapSlotFor(SPD);
1808 if (Slot) return Slot;
1810 // Gather the details (simplify add attribute code.)
1811 const std::string &Name = SPD->getName();
1812 const std::string &FullName = SPD->getFullName();
1813 const std::string &LinkageName = SPD->getLinkageName();
1815 DIE *SubprogramDie = new DIE(DW_TAG_subprogram);
1816 AddString(SubprogramDie, DW_AT_name, DW_FORM_string, Name);
1817 if (!LinkageName.empty()) {
1818 AddString(SubprogramDie, DW_AT_MIPS_linkage_name, DW_FORM_string,
1821 if (SPD->getType()) AddType(SubprogramDie, SPD->getType(), Unit);
1822 if (!SPD->isStatic())
1823 AddUInt(SubprogramDie, DW_AT_external, DW_FORM_flag, 1);
1824 AddUInt(SubprogramDie, DW_AT_prototyped, DW_FORM_flag, 1);
1826 // Add source line info if available.
1827 AddSourceLine(SubprogramDie, UnitDesc, SPD->getLine());
1830 Slot = SubprogramDie;
1832 // Add to context owner.
1833 Unit->getDie()->AddChild(SubprogramDie);
1835 // Expose as global.
1836 Unit->AddGlobal(FullName, SubprogramDie);
1838 return SubprogramDie;
1841 /// NewScopeVariable - Create a new scope variable.
1843 DIE *NewScopeVariable(DebugVariable *DV, CompileUnit *Unit) {
1844 // Get the descriptor.
1845 VariableDesc *VD = DV->getDesc();
1847 // Translate tag to proper Dwarf tag. The result variable is dropped for
1850 switch (VD->getTag()) {
1851 case DW_TAG_return_variable: return NULL;
1852 case DW_TAG_arg_variable: Tag = DW_TAG_formal_parameter; break;
1853 case DW_TAG_auto_variable: // fall thru
1854 default: Tag = DW_TAG_variable; break;
1857 // Define variable debug information entry.
1858 DIE *VariableDie = new DIE(Tag);
1859 AddString(VariableDie, DW_AT_name, DW_FORM_string, VD->getName());
1861 // Add source line info if available.
1862 AddSourceLine(VariableDie, VD->getFile(), VD->getLine());
1864 // Add variable type.
1865 AddType(VariableDie, VD->getType(), Unit);
1867 // Add variable address.
1868 MachineLocation Location;
1869 RI->getLocation(*MF, DV->getFrameIndex(), Location);
1870 AddAddress(VariableDie, DW_AT_location, Location);
1875 /// ConstructScope - Construct the components of a scope.
1877 void ConstructScope(DebugScope *ParentScope,
1878 unsigned ParentStartID, unsigned ParentEndID,
1879 DIE *ParentDie, CompileUnit *Unit) {
1880 // Add variables to scope.
1881 std::vector<DebugVariable *> &Variables = ParentScope->getVariables();
1882 for (unsigned i = 0, N = Variables.size(); i < N; ++i) {
1883 DIE *VariableDie = NewScopeVariable(Variables[i], Unit);
1884 if (VariableDie) ParentDie->AddChild(VariableDie);
1887 // Add nested scopes.
1888 std::vector<DebugScope *> &Scopes = ParentScope->getScopes();
1889 for (unsigned j = 0, M = Scopes.size(); j < M; ++j) {
1890 // Define the Scope debug information entry.
1891 DebugScope *Scope = Scopes[j];
1892 // FIXME - Ignore inlined functions for the time being.
1893 if (!Scope->getParent()) continue;
1895 unsigned StartID = DebugInfo->MappedLabel(Scope->getStartLabelID());
1896 unsigned EndID = DebugInfo->MappedLabel(Scope->getEndLabelID());
1898 // Ignore empty scopes.
1899 if (StartID == EndID && StartID != 0) continue;
1900 if (Scope->getScopes().empty() && Scope->getVariables().empty()) continue;
1902 if (StartID == ParentStartID && EndID == ParentEndID) {
1903 // Just add stuff to the parent scope.
1904 ConstructScope(Scope, ParentStartID, ParentEndID, ParentDie, Unit);
1906 DIE *ScopeDie = new DIE(DW_TAG_lexical_block);
1908 // Add the scope bounds.
1910 AddLabel(ScopeDie, DW_AT_low_pc, DW_FORM_addr,
1911 DWLabel("loc", StartID));
1913 AddLabel(ScopeDie, DW_AT_low_pc, DW_FORM_addr,
1914 DWLabel("func_begin", SubprogramCount));
1917 AddLabel(ScopeDie, DW_AT_high_pc, DW_FORM_addr,
1918 DWLabel("loc", EndID));
1920 AddLabel(ScopeDie, DW_AT_high_pc, DW_FORM_addr,
1921 DWLabel("func_end", SubprogramCount));
1924 // Add the scope contents.
1925 ConstructScope(Scope, StartID, EndID, ScopeDie, Unit);
1926 ParentDie->AddChild(ScopeDie);
1931 /// ConstructRootScope - Construct the scope for the subprogram.
1933 void ConstructRootScope(DebugScope *RootScope) {
1934 // Exit if there is no root scope.
1935 if (!RootScope) return;
1937 // Get the subprogram debug information entry.
1938 SubprogramDesc *SPD = cast<SubprogramDesc>(RootScope->getDesc());
1940 // Get the compile unit context.
1941 CompileUnit *Unit = GetBaseCompileUnit();
1943 // Get the subprogram die.
1944 DIE *SPDie = Unit->getDieMapSlotFor(SPD);
1945 assert(SPDie && "Missing subprogram descriptor");
1947 // Add the function bounds.
1948 AddLabel(SPDie, DW_AT_low_pc, DW_FORM_addr,
1949 DWLabel("func_begin", SubprogramCount));
1950 AddLabel(SPDie, DW_AT_high_pc, DW_FORM_addr,
1951 DWLabel("func_end", SubprogramCount));
1952 MachineLocation Location(RI->getFrameRegister(*MF));
1953 AddAddress(SPDie, DW_AT_frame_base, Location);
1955 ConstructScope(RootScope, 0, 0, SPDie, Unit);
1958 /// EmitInitial - Emit initial Dwarf declarations. This is necessary for cc
1959 /// tools to recognize the object file contains Dwarf information.
1960 void EmitInitial() {
1961 // Check to see if we already emitted intial headers.
1962 if (didInitial) return;
1965 // Dwarf sections base addresses.
1966 if (TAI->getDwarfRequiresFrameSection()) {
1967 Asm->SwitchToDataSection(TAI->getDwarfFrameSection());
1968 EmitLabel("section_frame", 0);
1970 Asm->SwitchToDataSection(TAI->getDwarfInfoSection());
1971 EmitLabel("section_info", 0);
1972 Asm->SwitchToDataSection(TAI->getDwarfAbbrevSection());
1973 EmitLabel("section_abbrev", 0);
1974 Asm->SwitchToDataSection(TAI->getDwarfARangesSection());
1975 EmitLabel("section_aranges", 0);
1976 Asm->SwitchToDataSection(TAI->getDwarfMacInfoSection());
1977 EmitLabel("section_macinfo", 0);
1978 Asm->SwitchToDataSection(TAI->getDwarfLineSection());
1979 EmitLabel("section_line", 0);
1980 Asm->SwitchToDataSection(TAI->getDwarfLocSection());
1981 EmitLabel("section_loc", 0);
1982 Asm->SwitchToDataSection(TAI->getDwarfPubNamesSection());
1983 EmitLabel("section_pubnames", 0);
1984 Asm->SwitchToDataSection(TAI->getDwarfStrSection());
1985 EmitLabel("section_str", 0);
1986 Asm->SwitchToDataSection(TAI->getDwarfRangesSection());
1987 EmitLabel("section_ranges", 0);
1989 Asm->SwitchToTextSection(TAI->getTextSection());
1990 EmitLabel("text_begin", 0);
1991 Asm->SwitchToDataSection(TAI->getDataSection());
1992 EmitLabel("data_begin", 0);
1994 // Emit common frame information.
1995 EmitInitialDebugFrame();
1998 /// EmitDIE - Recusively Emits a debug information entry.
2000 void EmitDIE(DIE *Die) const {
2001 // Get the abbreviation for this DIE.
2002 unsigned AbbrevNumber = Die->getAbbrevNumber();
2003 const DIEAbbrev *Abbrev = Abbreviations[AbbrevNumber - 1];
2007 // Emit the code (index) for the abbreviation.
2008 EmitULEB128Bytes(AbbrevNumber);
2009 EOL(std::string("Abbrev [" +
2010 utostr(AbbrevNumber) +
2011 "] 0x" + utohexstr(Die->getOffset()) +
2012 ":0x" + utohexstr(Die->getSize()) + " " +
2013 TagString(Abbrev->getTag())));
2015 const std::vector<DIEValue *> &Values = Die->getValues();
2016 const std::vector<DIEAbbrevData> &AbbrevData = Abbrev->getData();
2018 // Emit the DIE attribute values.
2019 for (unsigned i = 0, N = Values.size(); i < N; ++i) {
2020 unsigned Attr = AbbrevData[i].getAttribute();
2021 unsigned Form = AbbrevData[i].getForm();
2022 assert(Form && "Too many attributes for DIE (check abbreviation)");
2025 case DW_AT_sibling: {
2026 EmitInt32(Die->SiblingOffset());
2030 // Emit an attribute using the defined form.
2031 Values[i]->EmitValue(*this, Form);
2036 EOL(AttributeString(Attr));
2039 // Emit the DIE children if any.
2040 if (Abbrev->getChildrenFlag() == DW_CHILDREN_yes) {
2041 const std::vector<DIE *> &Children = Die->getChildren();
2043 for (unsigned j = 0, M = Children.size(); j < M; ++j) {
2044 EmitDIE(Children[j]);
2047 EmitInt8(0); EOL("End Of Children Mark");
2051 /// SizeAndOffsetDie - Compute the size and offset of a DIE.
2053 unsigned SizeAndOffsetDie(DIE *Die, unsigned Offset, bool Last) {
2054 // Get the children.
2055 const std::vector<DIE *> &Children = Die->getChildren();
2057 // If not last sibling and has children then add sibling offset attribute.
2058 if (!Last && !Children.empty()) Die->AddSiblingOffset();
2060 // Record the abbreviation.
2061 AssignAbbrevNumber(Die->getAbbrev());
2063 // Get the abbreviation for this DIE.
2064 unsigned AbbrevNumber = Die->getAbbrevNumber();
2065 const DIEAbbrev *Abbrev = Abbreviations[AbbrevNumber - 1];
2068 Die->setOffset(Offset);
2070 // Start the size with the size of abbreviation code.
2071 Offset += SizeULEB128(AbbrevNumber);
2073 const std::vector<DIEValue *> &Values = Die->getValues();
2074 const std::vector<DIEAbbrevData> &AbbrevData = Abbrev->getData();
2076 // Size the DIE attribute values.
2077 for (unsigned i = 0, N = Values.size(); i < N; ++i) {
2078 // Size attribute value.
2079 Offset += Values[i]->SizeOf(*this, AbbrevData[i].getForm());
2082 // Size the DIE children if any.
2083 if (!Children.empty()) {
2084 assert(Abbrev->getChildrenFlag() == DW_CHILDREN_yes &&
2085 "Children flag not set");
2087 for (unsigned j = 0, M = Children.size(); j < M; ++j) {
2088 Offset = SizeAndOffsetDie(Children[j], Offset, (j + 1) == M);
2091 // End of children marker.
2092 Offset += sizeof(int8_t);
2095 Die->setSize(Offset - Die->getOffset());
2099 /// SizeAndOffsets - Compute the size and offset of all the DIEs.
2101 void SizeAndOffsets() {
2102 // Process base compile unit.
2103 CompileUnit *Unit = GetBaseCompileUnit();
2104 // Compute size of compile unit header
2105 unsigned Offset = sizeof(int32_t) + // Length of Compilation Unit Info
2106 sizeof(int16_t) + // DWARF version number
2107 sizeof(int32_t) + // Offset Into Abbrev. Section
2108 sizeof(int8_t); // Pointer Size (in bytes)
2109 SizeAndOffsetDie(Unit->getDie(), Offset, true);
2112 /// EmitFrameMoves - Emit frame instructions to describe the layout of the
2114 void EmitFrameMoves(const char *BaseLabel, unsigned BaseLabelID,
2115 std::vector<MachineMove> &Moves) {
2117 Asm->TM.getFrameInfo()->getStackGrowthDirection() ==
2118 TargetFrameInfo::StackGrowsUp ?
2119 TAI->getAddressSize() : -TAI->getAddressSize();
2121 for (unsigned i = 0, N = Moves.size(); i < N; ++i) {
2122 MachineMove &Move = Moves[i];
2123 unsigned LabelID = Move.getLabelID();
2126 LabelID = DebugInfo->MappedLabel(LabelID);
2128 // Throw out move if the label is invalid.
2129 if (!LabelID) continue;
2132 const MachineLocation &Dst = Move.getDestination();
2133 const MachineLocation &Src = Move.getSource();
2135 // Advance row if new location.
2136 if (BaseLabel && LabelID && BaseLabelID != LabelID) {
2137 EmitInt8(DW_CFA_advance_loc4);
2138 EOL("DW_CFA_advance_loc4");
2139 EmitDifference("loc", LabelID, BaseLabel, BaseLabelID, true);
2142 BaseLabelID = LabelID;
2146 // If advancing cfa.
2147 if (Dst.isRegister() && Dst.getRegister() == MachineLocation::VirtualFP) {
2148 if (!Src.isRegister()) {
2149 if (Src.getRegister() == MachineLocation::VirtualFP) {
2150 EmitInt8(DW_CFA_def_cfa_offset);
2151 EOL("DW_CFA_def_cfa_offset");
2153 EmitInt8(DW_CFA_def_cfa);
2154 EOL("DW_CFA_def_cfa");
2155 EmitULEB128Bytes(RI->getDwarfRegNum(Src.getRegister()));
2159 int Offset = Src.getOffset() / stackGrowth;
2161 EmitULEB128Bytes(Offset);
2164 assert(0 && "Machine move no supported yet.");
2166 } else if (Src.isRegister() &&
2167 Src.getRegister() == MachineLocation::VirtualFP) {
2168 if (Dst.isRegister()) {
2169 EmitInt8(DW_CFA_def_cfa_register);
2170 EOL("DW_CFA_def_cfa_register");
2171 EmitULEB128Bytes(RI->getDwarfRegNum(Dst.getRegister()));
2174 assert(0 && "Machine move no supported yet.");
2177 unsigned Reg = RI->getDwarfRegNum(Src.getRegister());
2178 int Offset = Dst.getOffset() / stackGrowth;
2181 EmitInt8(DW_CFA_offset_extended_sf);
2182 EOL("DW_CFA_offset_extended_sf");
2183 EmitULEB128Bytes(Reg);
2185 EmitSLEB128Bytes(Offset);
2187 } else if (Reg < 64) {
2188 EmitInt8(DW_CFA_offset + Reg);
2189 EOL("DW_CFA_offset + Reg");
2190 EmitULEB128Bytes(Offset);
2193 EmitInt8(DW_CFA_offset_extended);
2194 EOL("DW_CFA_offset_extended");
2195 EmitULEB128Bytes(Reg);
2197 EmitULEB128Bytes(Offset);
2204 /// EmitDebugInfo - Emit the debug info section.
2206 void EmitDebugInfo() const {
2207 // Start debug info section.
2208 Asm->SwitchToDataSection(TAI->getDwarfInfoSection());
2210 CompileUnit *Unit = GetBaseCompileUnit();
2211 DIE *Die = Unit->getDie();
2212 // Emit the compile units header.
2213 EmitLabel("info_begin", Unit->getID());
2214 // Emit size of content not including length itself
2215 unsigned ContentSize = Die->getSize() +
2216 sizeof(int16_t) + // DWARF version number
2217 sizeof(int32_t) + // Offset Into Abbrev. Section
2218 sizeof(int8_t) + // Pointer Size (in bytes)
2219 sizeof(int32_t); // FIXME - extra pad for gdb bug.
2221 EmitInt32(ContentSize); EOL("Length of Compilation Unit Info");
2222 EmitInt16(DWARF_VERSION); EOL("DWARF version number");
2223 EmitDifference("abbrev_begin", 0, "section_abbrev", 0, true);
2224 EOL("Offset Into Abbrev. Section");
2225 EmitInt8(TAI->getAddressSize()); EOL("Address Size (in bytes)");
2228 EmitInt8(0); EOL("Extra Pad For GDB"); // FIXME - extra pad for gdb bug.
2229 EmitInt8(0); EOL("Extra Pad For GDB"); // FIXME - extra pad for gdb bug.
2230 EmitInt8(0); EOL("Extra Pad For GDB"); // FIXME - extra pad for gdb bug.
2231 EmitInt8(0); EOL("Extra Pad For GDB"); // FIXME - extra pad for gdb bug.
2232 EmitLabel("info_end", Unit->getID());
2237 /// EmitAbbreviations - Emit the abbreviation section.
2239 void EmitAbbreviations() const {
2240 // Check to see if it is worth the effort.
2241 if (!Abbreviations.empty()) {
2242 // Start the debug abbrev section.
2243 Asm->SwitchToDataSection(TAI->getDwarfAbbrevSection());
2245 EmitLabel("abbrev_begin", 0);
2247 // For each abbrevation.
2248 for (unsigned i = 0, N = Abbreviations.size(); i < N; ++i) {
2249 // Get abbreviation data
2250 const DIEAbbrev *Abbrev = Abbreviations[i];
2252 // Emit the abbrevations code (base 1 index.)
2253 EmitULEB128Bytes(Abbrev->getNumber()); EOL("Abbreviation Code");
2255 // Emit the abbreviations data.
2256 Abbrev->Emit(*this);
2261 EmitLabel("abbrev_end", 0);
2267 /// EmitDebugLines - Emit source line information.
2269 void EmitDebugLines() const {
2270 // Minimum line delta, thus ranging from -10..(255-10).
2271 const int MinLineDelta = -(DW_LNS_fixed_advance_pc + 1);
2272 // Maximum line delta, thus ranging from -10..(255-10).
2273 const int MaxLineDelta = 255 + MinLineDelta;
2275 // Start the dwarf line section.
2276 Asm->SwitchToDataSection(TAI->getDwarfLineSection());
2278 // Construct the section header.
2280 EmitDifference("line_end", 0, "line_begin", 0, true);
2281 EOL("Length of Source Line Info");
2282 EmitLabel("line_begin", 0);
2284 EmitInt16(DWARF_VERSION); EOL("DWARF version number");
2286 EmitDifference("line_prolog_end", 0, "line_prolog_begin", 0, true);
2287 EOL("Prolog Length");
2288 EmitLabel("line_prolog_begin", 0);
2290 EmitInt8(1); EOL("Minimum Instruction Length");
2292 EmitInt8(1); EOL("Default is_stmt_start flag");
2294 EmitInt8(MinLineDelta); EOL("Line Base Value (Special Opcodes)");
2296 EmitInt8(MaxLineDelta); EOL("Line Range Value (Special Opcodes)");
2298 EmitInt8(-MinLineDelta); EOL("Special Opcode Base");
2300 // Line number standard opcode encodings argument count
2301 EmitInt8(0); EOL("DW_LNS_copy arg count");
2302 EmitInt8(1); EOL("DW_LNS_advance_pc arg count");
2303 EmitInt8(1); EOL("DW_LNS_advance_line arg count");
2304 EmitInt8(1); EOL("DW_LNS_set_file arg count");
2305 EmitInt8(1); EOL("DW_LNS_set_column arg count");
2306 EmitInt8(0); EOL("DW_LNS_negate_stmt arg count");
2307 EmitInt8(0); EOL("DW_LNS_set_basic_block arg count");
2308 EmitInt8(0); EOL("DW_LNS_const_add_pc arg count");
2309 EmitInt8(1); EOL("DW_LNS_fixed_advance_pc arg count");
2311 const UniqueVector<std::string> &Directories = DebugInfo->getDirectories();
2312 const UniqueVector<SourceFileInfo>
2313 &SourceFiles = DebugInfo->getSourceFiles();
2315 // Emit directories.
2316 for (unsigned DirectoryID = 1, NDID = Directories.size();
2317 DirectoryID <= NDID; ++DirectoryID) {
2318 EmitString(Directories[DirectoryID]); EOL("Directory");
2320 EmitInt8(0); EOL("End of directories");
2323 for (unsigned SourceID = 1, NSID = SourceFiles.size();
2324 SourceID <= NSID; ++SourceID) {
2325 const SourceFileInfo &SourceFile = SourceFiles[SourceID];
2326 EmitString(SourceFile.getName()); EOL("Source");
2327 EmitULEB128Bytes(SourceFile.getDirectoryID()); EOL("Directory #");
2328 EmitULEB128Bytes(0); EOL("Mod date");
2329 EmitULEB128Bytes(0); EOL("File size");
2331 EmitInt8(0); EOL("End of files");
2333 EmitLabel("line_prolog_end", 0);
2335 // A sequence for each text section.
2336 for (unsigned j = 0, M = SectionSourceLines.size(); j < M; ++j) {
2337 // Isolate current sections line info.
2338 const std::vector<SourceLineInfo> &LineInfos = SectionSourceLines[j];
2342 << TAI->getCommentString() << " "
2344 << SectionMap[j + 1].c_str() << "\n";
2347 // Dwarf assumes we start with first line of first source file.
2348 unsigned Source = 1;
2351 // Construct rows of the address, source, line, column matrix.
2352 for (unsigned i = 0, N = LineInfos.size(); i < N; ++i) {
2353 const SourceLineInfo &LineInfo = LineInfos[i];
2354 unsigned LabelID = DebugInfo->MappedLabel(LineInfo.getLabelID());
2355 if (!LabelID) continue;
2358 unsigned SourceID = LineInfo.getSourceID();
2359 const SourceFileInfo &SourceFile = SourceFiles[SourceID];
2360 unsigned DirectoryID = SourceFile.getDirectoryID();
2362 << TAI->getCommentString() << " "
2363 << Directories[DirectoryID]
2364 << SourceFile.getName() << ":"
2365 << LineInfo.getLine() << "\n";
2368 // Define the line address.
2369 EmitInt8(0); EOL("Extended Op");
2370 EmitInt8(TAI->getAddressSize() + 1); EOL("Op size");
2371 EmitInt8(DW_LNE_set_address); EOL("DW_LNE_set_address");
2372 EmitReference("loc", LabelID); EOL("Location label");
2374 // If change of source, then switch to the new source.
2375 if (Source != LineInfo.getSourceID()) {
2376 Source = LineInfo.getSourceID();
2377 EmitInt8(DW_LNS_set_file); EOL("DW_LNS_set_file");
2378 EmitULEB128Bytes(Source); EOL("New Source");
2381 // If change of line.
2382 if (Line != LineInfo.getLine()) {
2383 // Determine offset.
2384 int Offset = LineInfo.getLine() - Line;
2385 int Delta = Offset - MinLineDelta;
2388 Line = LineInfo.getLine();
2390 // If delta is small enough and in range...
2391 if (Delta >= 0 && Delta < (MaxLineDelta - 1)) {
2392 // ... then use fast opcode.
2393 EmitInt8(Delta - MinLineDelta); EOL("Line Delta");
2395 // ... otherwise use long hand.
2396 EmitInt8(DW_LNS_advance_line); EOL("DW_LNS_advance_line");
2397 EmitSLEB128Bytes(Offset); EOL("Line Offset");
2398 EmitInt8(DW_LNS_copy); EOL("DW_LNS_copy");
2401 // Copy the previous row (different address or source)
2402 EmitInt8(DW_LNS_copy); EOL("DW_LNS_copy");
2406 // Define last address of section.
2407 EmitInt8(0); EOL("Extended Op");
2408 EmitInt8(TAI->getAddressSize() + 1); EOL("Op size");
2409 EmitInt8(DW_LNE_set_address); EOL("DW_LNE_set_address");
2410 EmitReference("section_end", j + 1); EOL("Section end label");
2412 // Mark end of matrix.
2413 EmitInt8(0); EOL("DW_LNE_end_sequence");
2414 EmitULEB128Bytes(1); O << "\n";
2415 EmitInt8(1); O << "\n";
2418 EmitLabel("line_end", 0);
2423 /// EmitInitialDebugFrame - Emit common frame info into a debug frame section.
2425 void EmitInitialDebugFrame() {
2426 if (!TAI->getDwarfRequiresFrameSection())
2430 Asm->TM.getFrameInfo()->getStackGrowthDirection() ==
2431 TargetFrameInfo::StackGrowsUp ?
2432 TAI->getAddressSize() : -TAI->getAddressSize();
2434 // Start the dwarf frame section.
2435 Asm->SwitchToDataSection(TAI->getDwarfFrameSection());
2437 EmitLabel("frame_common", 0);
2438 EmitDifference("frame_common_end", 0,
2439 "frame_common_begin", 0, true);
2440 EOL("Length of Common Information Entry");
2442 EmitLabel("frame_common_begin", 0);
2443 EmitInt32((int)DW_CIE_ID); EOL("CIE Identifier Tag");
2444 EmitInt8(DW_CIE_VERSION); EOL("CIE Version");
2445 EmitString(""); EOL("CIE Augmentation");
2446 EmitULEB128Bytes(1); EOL("CIE Code Alignment Factor");
2447 EmitSLEB128Bytes(stackGrowth); EOL("CIE Data Alignment Factor");
2448 EmitInt8(RI->getDwarfRegNum(RI->getRARegister())); EOL("CIE RA Column");
2450 std::vector<MachineMove> Moves;
2451 RI->getInitialFrameState(Moves);
2452 EmitFrameMoves(NULL, 0, Moves);
2454 Asm->EmitAlignment(2);
2455 EmitLabel("frame_common_end", 0);
2460 /// EmitFunctionDebugFrame - Emit per function frame info into a debug frame
2462 void EmitFunctionDebugFrame() {
2463 if (!TAI->getDwarfRequiresFrameSection())
2466 // Start the dwarf frame section.
2467 Asm->SwitchToDataSection(TAI->getDwarfFrameSection());
2469 EmitDifference("frame_end", SubprogramCount,
2470 "frame_begin", SubprogramCount, true);
2471 EOL("Length of Frame Information Entry");
2473 EmitLabel("frame_begin", SubprogramCount);
2475 EmitDifference("frame_common", 0, "section_frame", 0, true);
2476 EOL("FDE CIE offset");
2478 EmitReference("func_begin", SubprogramCount); EOL("FDE initial location");
2479 EmitDifference("func_end", SubprogramCount,
2480 "func_begin", SubprogramCount);
2481 EOL("FDE address range");
2483 std::vector<MachineMove> &Moves = DebugInfo->getFrameMoves();
2485 EmitFrameMoves("func_begin", SubprogramCount, Moves);
2487 Asm->EmitAlignment(2);
2488 EmitLabel("frame_end", SubprogramCount);
2493 /// EmitDebugPubNames - Emit visible names into a debug pubnames section.
2495 void EmitDebugPubNames() {
2496 // Start the dwarf pubnames section.
2497 Asm->SwitchToDataSection(TAI->getDwarfPubNamesSection());
2499 CompileUnit *Unit = GetBaseCompileUnit();
2501 EmitDifference("pubnames_end", Unit->getID(),
2502 "pubnames_begin", Unit->getID(), true);
2503 EOL("Length of Public Names Info");
2505 EmitLabel("pubnames_begin", Unit->getID());
2507 EmitInt16(DWARF_VERSION); EOL("DWARF Version");
2509 EmitDifference("info_begin", Unit->getID(), "section_info", 0, true);
2510 EOL("Offset of Compilation Unit Info");
2512 EmitDifference("info_end", Unit->getID(), "info_begin", Unit->getID(),true);
2513 EOL("Compilation Unit Length");
2515 std::map<std::string, DIE *> &Globals = Unit->getGlobals();
2517 for (std::map<std::string, DIE *>::iterator GI = Globals.begin(),
2520 const std::string &Name = GI->first;
2521 DIE * Entity = GI->second;
2523 EmitInt32(Entity->getOffset()); EOL("DIE offset");
2524 EmitString(Name); EOL("External Name");
2527 EmitInt32(0); EOL("End Mark");
2528 EmitLabel("pubnames_end", Unit->getID());
2533 /// EmitDebugStr - Emit visible names into a debug str section.
2535 void EmitDebugStr() {
2536 // Check to see if it is worth the effort.
2537 if (!StringPool.empty()) {
2538 // Start the dwarf str section.
2539 Asm->SwitchToDataSection(TAI->getDwarfStrSection());
2541 // For each of strings in the string pool.
2542 for (unsigned StringID = 1, N = StringPool.size();
2543 StringID <= N; ++StringID) {
2544 // Emit a label for reference from debug information entries.
2545 EmitLabel("string", StringID);
2546 // Emit the string itself.
2547 const std::string &String = StringPool[StringID];
2548 EmitString(String); O << "\n";
2555 /// EmitDebugLoc - Emit visible names into a debug loc section.
2557 void EmitDebugLoc() {
2558 // Start the dwarf loc section.
2559 Asm->SwitchToDataSection(TAI->getDwarfLocSection());
2564 /// EmitDebugARanges - Emit visible names into a debug aranges section.
2566 void EmitDebugARanges() {
2567 // Start the dwarf aranges section.
2568 Asm->SwitchToDataSection(TAI->getDwarfARangesSection());
2572 CompileUnit *Unit = GetBaseCompileUnit();
2574 // Don't include size of length
2575 EmitInt32(0x1c); EOL("Length of Address Ranges Info");
2577 EmitInt16(DWARF_VERSION); EOL("Dwarf Version");
2579 EmitReference("info_begin", Unit->getID());
2580 EOL("Offset of Compilation Unit Info");
2582 EmitInt8(TAI->getAddressSize()); EOL("Size of Address");
2584 EmitInt8(0); EOL("Size of Segment Descriptor");
2586 EmitInt16(0); EOL("Pad (1)");
2587 EmitInt16(0); EOL("Pad (2)");
2590 EmitReference("text_begin", 0); EOL("Address");
2591 EmitDifference("text_end", 0, "text_begin", 0, true); EOL("Length");
2593 EmitInt32(0); EOL("EOM (1)");
2594 EmitInt32(0); EOL("EOM (2)");
2600 /// EmitDebugRanges - Emit visible names into a debug ranges section.
2602 void EmitDebugRanges() {
2603 // Start the dwarf ranges section.
2604 Asm->SwitchToDataSection(TAI->getDwarfRangesSection());
2609 /// EmitDebugMacInfo - Emit visible names into a debug macinfo section.
2611 void EmitDebugMacInfo() {
2612 // Start the dwarf macinfo section.
2613 Asm->SwitchToDataSection(TAI->getDwarfMacInfoSection());
2618 /// ConstructCompileUnitDIEs - Create a compile unit DIE for each source and
2620 void ConstructCompileUnitDIEs() {
2621 const UniqueVector<CompileUnitDesc *> CUW = DebugInfo->getCompileUnits();
2623 for (unsigned i = 1, N = CUW.size(); i <= N; ++i) {
2624 unsigned ID = DebugInfo->RecordSource(CUW[i]);
2625 CompileUnit *Unit = NewCompileUnit(CUW[i], ID);
2626 CompileUnits.push_back(Unit);
2630 /// ConstructGlobalDIEs - Create DIEs for each of the externally visible
2631 /// global variables.
2632 void ConstructGlobalDIEs() {
2633 std::vector<GlobalVariableDesc *> GlobalVariables =
2634 DebugInfo->getAnchoredDescriptors<GlobalVariableDesc>(*M);
2636 for (unsigned i = 0, N = GlobalVariables.size(); i < N; ++i) {
2637 GlobalVariableDesc *GVD = GlobalVariables[i];
2638 NewGlobalVariable(GVD);
2642 /// ConstructSubprogramDIEs - Create DIEs for each of the externally visible
2644 void ConstructSubprogramDIEs() {
2645 std::vector<SubprogramDesc *> Subprograms =
2646 DebugInfo->getAnchoredDescriptors<SubprogramDesc>(*M);
2648 for (unsigned i = 0, N = Subprograms.size(); i < N; ++i) {
2649 SubprogramDesc *SPD = Subprograms[i];
2654 /// ShouldEmitDwarf - Returns true if Dwarf declarations should be made.
2656 bool ShouldEmitDwarf() const { return shouldEmit; }
2659 //===--------------------------------------------------------------------===//
2660 // Main entry points.
2662 Dwarf(std::ostream &OS, AsmPrinter *A, const TargetAsmInfo *T)
2666 , TD(Asm->TM.getTargetData())
2667 , RI(Asm->TM.getRegisterInfo())
2673 , SubprogramCount(0)
2675 , AbbreviationsSet(InitAbbreviationsSetSize)
2677 , ValuesSet(InitValuesSetSize)
2682 , SectionSourceLines()
2686 for (unsigned i = 0, N = CompileUnits.size(); i < N; ++i)
2687 delete CompileUnits[i];
2688 for (unsigned j = 0, M = Values.size(); j < M; ++j)
2694 const TargetAsmInfo *getTargetAsmInfo() const { return TAI; }
2696 /// SetDebugInfo - Set DebugInfo when it's known that pass manager has
2697 /// created it. Set by the target AsmPrinter.
2698 void SetDebugInfo(MachineDebugInfo *DI) {
2699 // Make sure initial declarations are made.
2700 if (!DebugInfo && DI->hasInfo()) {
2704 // Emit initial sections
2707 // Create all the compile unit DIEs.
2708 ConstructCompileUnitDIEs();
2710 // Create DIEs for each of the externally visible global variables.
2711 ConstructGlobalDIEs();
2713 // Create DIEs for each of the externally visible subprograms.
2714 ConstructSubprogramDIEs();
2716 // Prime section data.
2717 SectionMap.insert(TAI->getTextSection());
2721 /// BeginModule - Emit all Dwarf sections that should come prior to the
2723 void BeginModule(Module *M) {
2726 if (!ShouldEmitDwarf()) return;
2727 EOL("Dwarf Begin Module");
2730 /// EndModule - Emit all Dwarf sections that should come after the content.
2733 if (!ShouldEmitDwarf()) return;
2734 EOL("Dwarf End Module");
2736 // Standard sections final addresses.
2737 Asm->SwitchToTextSection(TAI->getTextSection());
2738 EmitLabel("text_end", 0);
2739 Asm->SwitchToDataSection(TAI->getDataSection());
2740 EmitLabel("data_end", 0);
2742 // End text sections.
2743 for (unsigned i = 1, N = SectionMap.size(); i <= N; ++i) {
2744 Asm->SwitchToTextSection(SectionMap[i].c_str());
2745 EmitLabel("section_end", i);
2748 // Compute DIE offsets and sizes.
2751 // Emit all the DIEs into a debug info section
2754 // Corresponding abbreviations into a abbrev section.
2755 EmitAbbreviations();
2757 // Emit source line correspondence into a debug line section.
2760 // Emit info into a debug pubnames section.
2761 EmitDebugPubNames();
2763 // Emit info into a debug str section.
2766 // Emit info into a debug loc section.
2769 // Emit info into a debug aranges section.
2772 // Emit info into a debug ranges section.
2775 // Emit info into a debug macinfo section.
2779 /// BeginFunction - Gather pre-function debug information. Assumes being
2780 /// emitted immediately after the function entry point.
2781 void BeginFunction(MachineFunction *MF) {
2784 if (!ShouldEmitDwarf()) return;
2785 EOL("Dwarf Begin Function");
2787 // Begin accumulating function debug information.
2788 DebugInfo->BeginFunction(MF);
2790 // Assumes in correct section after the entry point.
2791 EmitLabel("func_begin", ++SubprogramCount);
2794 /// EndFunction - Gather and emit post-function debug information.
2796 void EndFunction() {
2797 if (!ShouldEmitDwarf()) return;
2798 EOL("Dwarf End Function");
2800 // Define end label for subprogram.
2801 EmitLabel("func_end", SubprogramCount);
2803 // Get function line info.
2804 const std::vector<SourceLineInfo> &LineInfos = DebugInfo->getSourceLines();
2806 if (!LineInfos.empty()) {
2807 // Get section line info.
2808 unsigned ID = SectionMap.insert(Asm->CurrentSection);
2809 if (SectionSourceLines.size() < ID) SectionSourceLines.resize(ID);
2810 std::vector<SourceLineInfo> &SectionLineInfos = SectionSourceLines[ID-1];
2811 // Append the function info to section info.
2812 SectionLineInfos.insert(SectionLineInfos.end(),
2813 LineInfos.begin(), LineInfos.end());
2816 // Construct scopes for subprogram.
2817 ConstructRootScope(DebugInfo->getRootScope());
2819 // Emit function frame information.
2820 EmitFunctionDebugFrame();
2822 // Reset the line numbers for the next function.
2823 DebugInfo->ClearLineInfo();
2825 // Clear function debug information.
2826 DebugInfo->EndFunction();
2830 } // End of namespace llvm
2832 //===----------------------------------------------------------------------===//
2834 /// Emit - Print the abbreviation using the specified Dwarf writer.
2836 void DIEAbbrev::Emit(const Dwarf &DW) const {
2837 // Emit its Dwarf tag type.
2838 DW.EmitULEB128Bytes(Tag);
2839 DW.EOL(TagString(Tag));
2841 // Emit whether it has children DIEs.
2842 DW.EmitULEB128Bytes(ChildrenFlag);
2843 DW.EOL(ChildrenString(ChildrenFlag));
2845 // For each attribute description.
2846 for (unsigned i = 0, N = Data.size(); i < N; ++i) {
2847 const DIEAbbrevData &AttrData = Data[i];
2849 // Emit attribute type.
2850 DW.EmitULEB128Bytes(AttrData.getAttribute());
2851 DW.EOL(AttributeString(AttrData.getAttribute()));
2854 DW.EmitULEB128Bytes(AttrData.getForm());
2855 DW.EOL(FormEncodingString(AttrData.getForm()));
2858 // Mark end of abbreviation.
2859 DW.EmitULEB128Bytes(0); DW.EOL("EOM(1)");
2860 DW.EmitULEB128Bytes(0); DW.EOL("EOM(2)");
2864 void DIEAbbrev::print(std::ostream &O) {
2865 O << "Abbreviation @"
2866 << std::hex << (intptr_t)this << std::dec
2870 << ChildrenString(ChildrenFlag)
2873 for (unsigned i = 0, N = Data.size(); i < N; ++i) {
2875 << AttributeString(Data[i].getAttribute())
2877 << FormEncodingString(Data[i].getForm())
2881 void DIEAbbrev::dump() { print(cerr); }
2884 //===----------------------------------------------------------------------===//
2887 void DIEValue::dump() {
2892 //===----------------------------------------------------------------------===//
2894 /// EmitValue - Emit integer of appropriate size.
2896 void DIEInteger::EmitValue(const Dwarf &DW, unsigned Form) const {
2898 case DW_FORM_flag: // Fall thru
2899 case DW_FORM_ref1: // Fall thru
2900 case DW_FORM_data1: DW.EmitInt8(Integer); break;
2901 case DW_FORM_ref2: // Fall thru
2902 case DW_FORM_data2: DW.EmitInt16(Integer); break;
2903 case DW_FORM_ref4: // Fall thru
2904 case DW_FORM_data4: DW.EmitInt32(Integer); break;
2905 case DW_FORM_ref8: // Fall thru
2906 case DW_FORM_data8: DW.EmitInt64(Integer); break;
2907 case DW_FORM_udata: DW.EmitULEB128Bytes(Integer); break;
2908 case DW_FORM_sdata: DW.EmitSLEB128Bytes(Integer); break;
2909 default: assert(0 && "DIE Value form not supported yet"); break;
2913 //===----------------------------------------------------------------------===//
2915 /// EmitValue - Emit string value.
2917 void DIEString::EmitValue(const Dwarf &DW, unsigned Form) const {
2918 DW.EmitString(String);
2921 //===----------------------------------------------------------------------===//
2923 /// EmitValue - Emit label value.
2925 void DIEDwarfLabel::EmitValue(const Dwarf &DW, unsigned Form) const {
2926 DW.EmitReference(Label);
2929 /// SizeOf - Determine size of label value in bytes.
2931 unsigned DIEDwarfLabel::SizeOf(const Dwarf &DW, unsigned Form) const {
2932 return DW.getTargetAsmInfo()->getAddressSize();
2935 //===----------------------------------------------------------------------===//
2937 /// EmitValue - Emit label value.
2939 void DIEObjectLabel::EmitValue(const Dwarf &DW, unsigned Form) const {
2940 DW.EmitReference(Label);
2943 /// SizeOf - Determine size of label value in bytes.
2945 unsigned DIEObjectLabel::SizeOf(const Dwarf &DW, unsigned Form) const {
2946 return DW.getTargetAsmInfo()->getAddressSize();
2949 //===----------------------------------------------------------------------===//
2951 /// EmitValue - Emit delta value.
2953 void DIEDelta::EmitValue(const Dwarf &DW, unsigned Form) const {
2954 bool IsSmall = Form == DW_FORM_data4;
2955 DW.EmitDifference(LabelHi, LabelLo, IsSmall);
2958 /// SizeOf - Determine size of delta value in bytes.
2960 unsigned DIEDelta::SizeOf(const Dwarf &DW, unsigned Form) const {
2961 if (Form == DW_FORM_data4) return 4;
2962 return DW.getTargetAsmInfo()->getAddressSize();
2965 //===----------------------------------------------------------------------===//
2967 /// EmitValue - Emit debug information entry offset.
2969 void DIEntry::EmitValue(const Dwarf &DW, unsigned Form) const {
2970 DW.EmitInt32(Entry->getOffset());
2973 //===----------------------------------------------------------------------===//
2975 /// ComputeSize - calculate the size of the block.
2977 unsigned DIEBlock::ComputeSize(Dwarf &DW) {
2979 const std::vector<DIEAbbrevData> &AbbrevData = Abbrev.getData();
2981 for (unsigned i = 0, N = Values.size(); i < N; ++i) {
2982 Size += Values[i]->SizeOf(DW, AbbrevData[i].getForm());
2988 /// EmitValue - Emit block data.
2990 void DIEBlock::EmitValue(const Dwarf &DW, unsigned Form) const {
2992 case DW_FORM_block1: DW.EmitInt8(Size); break;
2993 case DW_FORM_block2: DW.EmitInt16(Size); break;
2994 case DW_FORM_block4: DW.EmitInt32(Size); break;
2995 case DW_FORM_block: DW.EmitULEB128Bytes(Size); break;
2996 default: assert(0 && "Improper form for block"); break;
2999 const std::vector<DIEAbbrevData> &AbbrevData = Abbrev.getData();
3001 for (unsigned i = 0, N = Values.size(); i < N; ++i) {
3003 Values[i]->EmitValue(DW, AbbrevData[i].getForm());
3007 /// SizeOf - Determine size of block data in bytes.
3009 unsigned DIEBlock::SizeOf(const Dwarf &DW, unsigned Form) const {
3011 case DW_FORM_block1: return Size + sizeof(int8_t);
3012 case DW_FORM_block2: return Size + sizeof(int16_t);
3013 case DW_FORM_block4: return Size + sizeof(int32_t);
3014 case DW_FORM_block: return Size + SizeULEB128(Size);
3015 default: assert(0 && "Improper form for block"); break;
3020 //===----------------------------------------------------------------------===//
3021 /// DIE Implementation
3024 for (unsigned i = 0, N = Children.size(); i < N; ++i)
3028 /// AddSiblingOffset - Add a sibling offset field to the front of the DIE.
3030 void DIE::AddSiblingOffset() {
3031 DIEInteger *DI = new DIEInteger(0);
3032 Values.insert(Values.begin(), DI);
3033 Abbrev.AddFirstAttribute(DW_AT_sibling, DW_FORM_ref4);
3036 /// Profile - Used to gather unique data for the value folding set.
3038 void DIE::Profile(FoldingSetNodeID &ID) {
3041 for (unsigned i = 0, N = Children.size(); i < N; ++i)
3042 ID.AddPointer(Children[i]);
3044 for (unsigned j = 0, M = Values.size(); j < M; ++j)
3045 ID.AddPointer(Values[j]);
3049 void DIE::print(std::ostream &O, unsigned IncIndent) {
3050 static unsigned IndentCount = 0;
3051 IndentCount += IncIndent;
3052 const std::string Indent(IndentCount, ' ');
3053 bool isBlock = Abbrev.getTag() == 0;
3058 << "0x" << std::hex << (intptr_t)this << std::dec
3059 << ", Offset: " << Offset
3060 << ", Size: " << Size
3064 << TagString(Abbrev.getTag())
3066 << ChildrenString(Abbrev.getChildrenFlag());
3068 O << "Size: " << Size;
3072 const std::vector<DIEAbbrevData> &Data = Abbrev.getData();
3075 for (unsigned i = 0, N = Data.size(); i < N; ++i) {
3078 O << AttributeString(Data[i].getAttribute());
3080 O << "Blk[" << i << "]";
3083 << FormEncodingString(Data[i].getForm())
3085 Values[i]->print(O);
3090 for (unsigned j = 0, M = Children.size(); j < M; ++j) {
3091 Children[j]->print(O, 4);
3094 if (!isBlock) O << "\n";
3095 IndentCount -= IncIndent;
3103 //===----------------------------------------------------------------------===//
3104 /// DwarfWriter Implementation
3107 DwarfWriter::DwarfWriter(std::ostream &OS, AsmPrinter *A,
3108 const TargetAsmInfo *T) {
3109 DW = new Dwarf(OS, A, T);
3112 DwarfWriter::~DwarfWriter() {
3116 /// SetDebugInfo - Set DebugInfo when it's known that pass manager has
3117 /// created it. Set by the target AsmPrinter.
3118 void DwarfWriter::SetDebugInfo(MachineDebugInfo *DI) {
3119 DW->SetDebugInfo(DI);
3122 /// BeginModule - Emit all Dwarf sections that should come prior to the
3124 void DwarfWriter::BeginModule(Module *M) {
3128 /// EndModule - Emit all Dwarf sections that should come after the content.
3130 void DwarfWriter::EndModule() {
3134 /// BeginFunction - Gather pre-function debug information. Assumes being
3135 /// emitted immediately after the function entry point.
3136 void DwarfWriter::BeginFunction(MachineFunction *MF) {
3137 DW->BeginFunction(MF);
3140 /// EndFunction - Gather and emit post-function debug information.
3142 void DwarfWriter::EndFunction() {