diff options
author | Bill Wendling <isanbard@gmail.com> | 2009-05-15 00:11:17 +0000 |
---|---|---|
committer | Bill Wendling <isanbard@gmail.com> | 2009-05-15 00:11:17 +0000 |
commit | 88423eecd0f16d3cfa89bdf92abdb72a5dc0616a (patch) | |
tree | 14a131cd9d6a504192d16f8c7274f6353c197c2c /lib/CodeGen | |
parent | 5f00b0c5b63c30c7ad6134543318551902de5c93 (diff) | |
download | external_llvm-88423eecd0f16d3cfa89bdf92abdb72a5dc0616a.zip external_llvm-88423eecd0f16d3cfa89bdf92abdb72a5dc0616a.tar.gz external_llvm-88423eecd0f16d3cfa89bdf92abdb72a5dc0616a.tar.bz2 |
Split out the Dwarf writer stuff into separate files. This is a much more
logical/sane approach to organizing all of the stuff that goes into writing out
DWARF information. Honestly? even this is too complex for what it's supposed to
be doing.
Trivia: It *looks* like there would be functionality changes, however there aren't!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71821 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen')
-rw-r--r-- | lib/CodeGen/AsmPrinter/DIE.cpp | 518 | ||||
-rw-r--r-- | lib/CodeGen/AsmPrinter/DIE.h | 549 | ||||
-rw-r--r-- | lib/CodeGen/AsmPrinter/DwarfLabel.cpp | 35 | ||||
-rw-r--r-- | lib/CodeGen/AsmPrinter/DwarfLabel.h | 56 | ||||
-rw-r--r-- | lib/CodeGen/AsmPrinter/DwarfPrinter.cpp | 235 | ||||
-rw-r--r-- | lib/CodeGen/AsmPrinter/DwarfPrinter.h | 153 | ||||
-rw-r--r-- | lib/CodeGen/AsmPrinter/DwarfWriter.cpp | 1316 |
7 files changed, 1584 insertions, 1278 deletions
diff --git a/lib/CodeGen/AsmPrinter/DIE.cpp b/lib/CodeGen/AsmPrinter/DIE.cpp new file mode 100644 index 0000000..dc149cf --- /dev/null +++ b/lib/CodeGen/AsmPrinter/DIE.cpp @@ -0,0 +1,518 @@ +//===--- lib/CodeGen/DIE.cpp - DWARF Info Entries -------------------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// Data structures for DWARF info entries. +// +//===----------------------------------------------------------------------===// + +#include "DIE.h" +#include "DwarfPrinter.h" +#include "llvm/CodeGen/AsmPrinter.h" +#include "llvm/Target/TargetAsmInfo.h" +#include "llvm/Target/TargetData.h" +#include <ostream> +using namespace llvm; + +//===----------------------------------------------------------------------===// +// DIEAbbrevData Implementation +//===----------------------------------------------------------------------===// + +/// Profile - Used to gather unique data for the abbreviation folding set. +/// +void DIEAbbrevData::Profile(FoldingSetNodeID &ID) const { + ID.AddInteger(Attribute); + ID.AddInteger(Form); +} + +//===----------------------------------------------------------------------===// +// DIEAbbrev Implementation +//===----------------------------------------------------------------------===// + +/// Profile - Used to gather unique data for the abbreviation folding set. +/// +void DIEAbbrev::Profile(FoldingSetNodeID &ID) const { + ID.AddInteger(Tag); + ID.AddInteger(ChildrenFlag); + + // For each attribute description. + for (unsigned i = 0, N = Data.size(); i < N; ++i) + Data[i].Profile(ID); +} + +/// Emit - Print the abbreviation using the specified asm printer. +/// +void DIEAbbrev::Emit(const AsmPrinter *Asm) const { + // Emit its Dwarf tag type. + Asm->EmitULEB128Bytes(Tag); + Asm->EOL(dwarf::TagString(Tag)); + + // Emit whether it has children DIEs. + Asm->EmitULEB128Bytes(ChildrenFlag); + Asm->EOL(dwarf::ChildrenString(ChildrenFlag)); + + // For each attribute description. + for (unsigned i = 0, N = Data.size(); i < N; ++i) { + const DIEAbbrevData &AttrData = Data[i]; + + // Emit attribute type. + Asm->EmitULEB128Bytes(AttrData.getAttribute()); + Asm->EOL(dwarf::AttributeString(AttrData.getAttribute())); + + // Emit form type. + Asm->EmitULEB128Bytes(AttrData.getForm()); + Asm->EOL(dwarf::FormEncodingString(AttrData.getForm())); + } + + // Mark end of abbreviation. + Asm->EmitULEB128Bytes(0); Asm->EOL("EOM(1)"); + Asm->EmitULEB128Bytes(0); Asm->EOL("EOM(2)"); +} + +#ifndef NDEBUG +void DIEAbbrev::print(std::ostream &O) { + O << "Abbreviation @" + << std::hex << (intptr_t)this << std::dec + << " " + << dwarf::TagString(Tag) + << " " + << dwarf::ChildrenString(ChildrenFlag) + << "\n"; + + for (unsigned i = 0, N = Data.size(); i < N; ++i) { + O << " " + << dwarf::AttributeString(Data[i].getAttribute()) + << " " + << dwarf::FormEncodingString(Data[i].getForm()) + << "\n"; + } +} +void DIEAbbrev::dump() { print(cerr); } +#endif + +//===----------------------------------------------------------------------===// +// DIE Implementation +//===----------------------------------------------------------------------===// + +DIE::~DIE() { + for (unsigned i = 0, N = Children.size(); i < N; ++i) + delete Children[i]; +} + +/// AddSiblingOffset - Add a sibling offset field to the front of the DIE. +/// +void DIE::AddSiblingOffset() { + DIEInteger *DI = new DIEInteger(0); + Values.insert(Values.begin(), DI); + Abbrev.AddFirstAttribute(dwarf::DW_AT_sibling, dwarf::DW_FORM_ref4); +} + +/// Profile - Used to gather unique data for the value folding set. +/// +void DIE::Profile(FoldingSetNodeID &ID) { + Abbrev.Profile(ID); + + for (unsigned i = 0, N = Children.size(); i < N; ++i) + ID.AddPointer(Children[i]); + + for (unsigned j = 0, M = Values.size(); j < M; ++j) + ID.AddPointer(Values[j]); +} + +#ifndef NDEBUG +void DIE::print(std::ostream &O, unsigned IncIndent) { + static unsigned IndentCount = 0; + IndentCount += IncIndent; + const std::string Indent(IndentCount, ' '); + bool isBlock = Abbrev.getTag() == 0; + + if (!isBlock) { + O << Indent + << "Die: " + << "0x" << std::hex << (intptr_t)this << std::dec + << ", Offset: " << Offset + << ", Size: " << Size + << "\n"; + + O << Indent + << dwarf::TagString(Abbrev.getTag()) + << " " + << dwarf::ChildrenString(Abbrev.getChildrenFlag()); + } else { + O << "Size: " << Size; + } + O << "\n"; + + const SmallVector<DIEAbbrevData, 8> &Data = Abbrev.getData(); + + IndentCount += 2; + for (unsigned i = 0, N = Data.size(); i < N; ++i) { + O << Indent; + + if (!isBlock) + O << dwarf::AttributeString(Data[i].getAttribute()); + else + O << "Blk[" << i << "]"; + + O << " " + << dwarf::FormEncodingString(Data[i].getForm()) + << " "; + Values[i]->print(O); + O << "\n"; + } + IndentCount -= 2; + + for (unsigned j = 0, M = Children.size(); j < M; ++j) { + Children[j]->print(O, 4); + } + + if (!isBlock) O << "\n"; + IndentCount -= IncIndent; +} + +void DIE::dump() { + print(cerr); +} +#endif + + +#ifndef NDEBUG +void DIEValue::dump() { + print(cerr); +} +#endif + +//===----------------------------------------------------------------------===// +// DIEInteger Implementation +//===----------------------------------------------------------------------===// + +/// EmitValue - Emit integer of appropriate size. +/// +void DIEInteger::EmitValue(Dwarf *D, unsigned Form) const { + const AsmPrinter *Asm = D->getAsm(); + switch (Form) { + case dwarf::DW_FORM_flag: // Fall thru + case dwarf::DW_FORM_ref1: // Fall thru + case dwarf::DW_FORM_data1: Asm->EmitInt8(Integer); break; + case dwarf::DW_FORM_ref2: // Fall thru + case dwarf::DW_FORM_data2: Asm->EmitInt16(Integer); break; + case dwarf::DW_FORM_ref4: // Fall thru + case dwarf::DW_FORM_data4: Asm->EmitInt32(Integer); break; + case dwarf::DW_FORM_ref8: // Fall thru + case dwarf::DW_FORM_data8: Asm->EmitInt64(Integer); break; + case dwarf::DW_FORM_udata: Asm->EmitULEB128Bytes(Integer); break; + case dwarf::DW_FORM_sdata: Asm->EmitSLEB128Bytes(Integer); break; + default: assert(0 && "DIE Value form not supported yet"); break; + } +} + +/// SizeOf - Determine size of integer value in bytes. +/// +unsigned DIEInteger::SizeOf(const TargetData *TD, unsigned Form) const { + switch (Form) { + case dwarf::DW_FORM_flag: // Fall thru + case dwarf::DW_FORM_ref1: // Fall thru + case dwarf::DW_FORM_data1: return sizeof(int8_t); + case dwarf::DW_FORM_ref2: // Fall thru + case dwarf::DW_FORM_data2: return sizeof(int16_t); + case dwarf::DW_FORM_ref4: // Fall thru + case dwarf::DW_FORM_data4: return sizeof(int32_t); + case dwarf::DW_FORM_ref8: // Fall thru + case dwarf::DW_FORM_data8: return sizeof(int64_t); + case dwarf::DW_FORM_udata: return TargetAsmInfo::getULEB128Size(Integer); + case dwarf::DW_FORM_sdata: return TargetAsmInfo::getSLEB128Size(Integer); + default: assert(0 && "DIE Value form not supported yet"); break; + } + return 0; +} + +/// Profile - Used to gather unique data for the value folding set. +/// +void DIEInteger::Profile(FoldingSetNodeID &ID, unsigned Int) { + ID.AddInteger(isInteger); + ID.AddInteger(Int); +} +void DIEInteger::Profile(FoldingSetNodeID &ID) { + Profile(ID, Integer); +} + +#ifndef NDEBUG +void DIEInteger::print(std::ostream &O) { + O << "Int: " << (int64_t)Integer + << " 0x" << std::hex << Integer << std::dec; +} +#endif + +//===----------------------------------------------------------------------===// +// DIEString Implementation +//===----------------------------------------------------------------------===// + +/// EmitValue - Emit string value. +/// +void DIEString::EmitValue(Dwarf *D, unsigned Form) const { + D->getAsm()->EmitString(Str); +} + +/// Profile - Used to gather unique data for the value folding set. +/// +void DIEString::Profile(FoldingSetNodeID &ID, const std::string &Str) { + ID.AddInteger(isString); + ID.AddString(Str); +} +void DIEString::Profile(FoldingSetNodeID &ID) { + Profile(ID, Str); +} + +#ifndef NDEBUG +void DIEString::print(std::ostream &O) { + O << "Str: \"" << Str << "\""; +} +#endif + +//===----------------------------------------------------------------------===// +// DIEDwarfLabel Implementation +//===----------------------------------------------------------------------===// + +/// EmitValue - Emit label value. +/// +void DIEDwarfLabel::EmitValue(Dwarf *D, unsigned Form) const { + bool IsSmall = Form == dwarf::DW_FORM_data4; + D->EmitReference(Label, false, IsSmall); +} + +/// SizeOf - Determine size of label value in bytes. +/// +unsigned DIEDwarfLabel::SizeOf(const TargetData *TD, unsigned Form) const { + if (Form == dwarf::DW_FORM_data4) return 4; + return TD->getPointerSize(); +} + +/// Profile - Used to gather unique data for the value folding set. +/// +void DIEDwarfLabel::Profile(FoldingSetNodeID &ID, const DWLabel &Label) { + ID.AddInteger(isLabel); + Label.Profile(ID); +} +void DIEDwarfLabel::Profile(FoldingSetNodeID &ID) { + Profile(ID, Label); +} + +#ifndef NDEBUG +void DIEDwarfLabel::print(std::ostream &O) { + O << "Lbl: "; + Label.print(O); +} +#endif + +//===----------------------------------------------------------------------===// +// DIEObjectLabel Implementation +//===----------------------------------------------------------------------===// + +/// EmitValue - Emit label value. +/// +void DIEObjectLabel::EmitValue(Dwarf *D, unsigned Form) const { + bool IsSmall = Form == dwarf::DW_FORM_data4; + D->EmitReference(Label, false, IsSmall); +} + +/// SizeOf - Determine size of label value in bytes. +/// +unsigned DIEObjectLabel::SizeOf(const TargetData *TD, unsigned Form) const { + if (Form == dwarf::DW_FORM_data4) return 4; + return TD->getPointerSize(); +} + +/// Profile - Used to gather unique data for the value folding set. +/// +void DIEObjectLabel::Profile(FoldingSetNodeID &ID, const std::string &Label) { + ID.AddInteger(isAsIsLabel); + ID.AddString(Label); +} +void DIEObjectLabel::Profile(FoldingSetNodeID &ID) { + Profile(ID, Label.c_str()); +} + +#ifndef NDEBUG +void DIEObjectLabel::print(std::ostream &O) { + O << "Obj: " << Label; +} +#endif + +//===----------------------------------------------------------------------===// +// DIESectionOffset Implementation +//===----------------------------------------------------------------------===// + +/// EmitValue - Emit delta value. +/// +void DIESectionOffset::EmitValue(Dwarf *D, unsigned Form) const { + bool IsSmall = Form == dwarf::DW_FORM_data4; + D->EmitSectionOffset(Label.getTag(), Section.getTag(), + Label.getNumber(), Section.getNumber(), + IsSmall, IsEH, UseSet); +} + +/// SizeOf - Determine size of delta value in bytes. +/// +unsigned DIESectionOffset::SizeOf(const TargetData *TD, unsigned Form) const { + if (Form == dwarf::DW_FORM_data4) return 4; + return TD->getPointerSize(); +} + +/// Profile - Used to gather unique data for the value folding set. +/// +void DIESectionOffset::Profile(FoldingSetNodeID &ID, const DWLabel &Label, + const DWLabel &Section) { + ID.AddInteger(isSectionOffset); + Label.Profile(ID); + Section.Profile(ID); + // IsEH and UseSet are specific to the Label/Section that we will emit the + // offset for; so Label/Section are enough for uniqueness. +} +void DIESectionOffset::Profile(FoldingSetNodeID &ID) { + Profile(ID, Label, Section); +} + +#ifndef NDEBUG +void DIESectionOffset::print(std::ostream &O) { + O << "Off: "; + Label.print(O); + O << "-"; + Section.print(O); + O << "-" << IsEH << "-" << UseSet; +} +#endif + +//===----------------------------------------------------------------------===// +// DIEDelta Implementation +//===----------------------------------------------------------------------===// + +/// EmitValue - Emit delta value. +/// +void DIEDelta::EmitValue(Dwarf *D, unsigned Form) const { + bool IsSmall = Form == dwarf::DW_FORM_data4; + D->EmitDifference(LabelHi, LabelLo, IsSmall); +} + +/// SizeOf - Determine size of delta value in bytes. +/// +unsigned DIEDelta::SizeOf(const TargetData *TD, unsigned Form) const { + if (Form == dwarf::DW_FORM_data4) return 4; + return TD->getPointerSize(); +} + +/// Profile - Used to gather unique data for the value folding set. +/// +void DIEDelta::Profile(FoldingSetNodeID &ID, const DWLabel &LabelHi, + const DWLabel &LabelLo) { + ID.AddInteger(isDelta); + LabelHi.Profile(ID); + LabelLo.Profile(ID); +} +void DIEDelta::Profile(FoldingSetNodeID &ID) { + Profile(ID, LabelHi, LabelLo); +} + +#ifndef NDEBUG +void DIEDelta::print(std::ostream &O) { + O << "Del: "; + LabelHi.print(O); + O << "-"; + LabelLo.print(O); +} +#endif + +//===----------------------------------------------------------------------===// +// DIEEntry Implementation +//===----------------------------------------------------------------------===// + +/// EmitValue - Emit debug information entry offset. +/// +void DIEEntry::EmitValue(Dwarf *D, unsigned Form) const { + D->getAsm()->EmitInt32(Entry->getOffset()); +} + +/// Profile - Used to gather unique data for the value folding set. +/// +void DIEEntry::Profile(FoldingSetNodeID &ID, DIE *Entry) { + ID.AddInteger(isEntry); + ID.AddPointer(Entry); +} +void DIEEntry::Profile(FoldingSetNodeID &ID) { + ID.AddInteger(isEntry); + + if (Entry) + ID.AddPointer(Entry); + else + ID.AddPointer(this); +} + +#ifndef NDEBUG +void DIEEntry::print(std::ostream &O) { + O << "Die: 0x" << std::hex << (intptr_t)Entry << std::dec; +} +#endif + +//===----------------------------------------------------------------------===// +// DIEBlock Implementation +//===----------------------------------------------------------------------===// + +/// ComputeSize - calculate the size of the block. +/// +unsigned DIEBlock::ComputeSize(const TargetData *TD) { + if (!Size) { + const SmallVector<DIEAbbrevData, 8> &AbbrevData = Abbrev.getData(); + for (unsigned i = 0, N = Values.size(); i < N; ++i) + Size += Values[i]->SizeOf(TD, AbbrevData[i].getForm()); + } + + return Size; +} + +/// EmitValue - Emit block data. +/// +void DIEBlock::EmitValue(Dwarf *D, unsigned Form) const { + const AsmPrinter *Asm = D->getAsm(); + switch (Form) { + case dwarf::DW_FORM_block1: Asm->EmitInt8(Size); break; + case dwarf::DW_FORM_block2: Asm->EmitInt16(Size); break; + case dwarf::DW_FORM_block4: Asm->EmitInt32(Size); break; + case dwarf::DW_FORM_block: Asm->EmitULEB128Bytes(Size); break; + default: assert(0 && "Improper form for block"); break; + } + + const SmallVector<DIEAbbrevData, 8> &AbbrevData = Abbrev.getData(); + for (unsigned i = 0, N = Values.size(); i < N; ++i) { + Asm->EOL(); + Values[i]->EmitValue(D, AbbrevData[i].getForm()); + } +} + +/// SizeOf - Determine size of block data in bytes. +/// +unsigned DIEBlock::SizeOf(const TargetData *TD, unsigned Form) const { + switch (Form) { + case dwarf::DW_FORM_block1: return Size + sizeof(int8_t); + case dwarf::DW_FORM_block2: return Size + sizeof(int16_t); + case dwarf::DW_FORM_block4: return Size + sizeof(int32_t); + case dwarf::DW_FORM_block: return Size + TargetAsmInfo::getULEB128Size(Size); + default: assert(0 && "Improper form for block"); break; + } + return 0; +} + +void DIEBlock::Profile(FoldingSetNodeID &ID) { + ID.AddInteger(isBlock); + DIE::Profile(ID); +} + +#ifndef NDEBUG +void DIEBlock::print(std::ostream &O) { + O << "Blk: "; + DIE::print(O, 5); +} +#endif diff --git a/lib/CodeGen/AsmPrinter/DIE.h b/lib/CodeGen/AsmPrinter/DIE.h new file mode 100644 index 0000000..7b43466 --- /dev/null +++ b/lib/CodeGen/AsmPrinter/DIE.h @@ -0,0 +1,549 @@ +//===--- lib/CodeGen/DIE.h - DWARF Info Entries -----------------*- C++ -*-===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// Data structures for DWARF info entries. +// +//===----------------------------------------------------------------------===// + +#ifndef DIE_H__ +#define DIE_H__ + +#include "DwarfLabel.h" +#include "llvm/ADT/FoldingSet.h" +#include "llvm/ADT/SmallVector.h" +#include "llvm/Support/Compiler.h" +#include "llvm/Support/Dwarf.h" +#include "llvm/Support/raw_ostream.h" +#include <iosfwd> + +namespace llvm { + class AsmPrinter; + class Dwarf; + class TargetData; + + //===--------------------------------------------------------------------===// + /// DIEAbbrevData - Dwarf abbreviation data, describes the one attribute of a + /// Dwarf abbreviation. + class VISIBILITY_HIDDEN DIEAbbrevData { + /// Attribute - Dwarf attribute code. + /// + unsigned Attribute; + + /// Form - Dwarf form code. + /// + unsigned Form; + public: + DIEAbbrevData(unsigned A, unsigned F) : Attribute(A), Form(F) {} + + // Accessors. + unsigned getAttribute() const { return Attribute; } + unsigned getForm() const { return Form; } + + /// Profile - Used to gather unique data for the abbreviation folding set. + /// + void Profile(FoldingSetNodeID &ID) const; + }; + + //===--------------------------------------------------------------------===// + /// DIEAbbrev - Dwarf abbreviation, describes the organization of a debug + /// information object. + class VISIBILITY_HIDDEN DIEAbbrev : public FoldingSetNode { + /// Tag - Dwarf tag code. + /// + unsigned Tag; + + /// Unique number for node. + /// + unsigned Number; + + /// ChildrenFlag - Dwarf children flag. + /// + unsigned ChildrenFlag; + + /// Data - Raw data bytes for abbreviation. + /// + SmallVector<DIEAbbrevData, 8> Data; + public: + DIEAbbrev(unsigned T, unsigned C) : Tag(T), ChildrenFlag(C), Data() {} + virtual ~DIEAbbrev() {} + + // Accessors. + unsigned getTag() const { return Tag; } + unsigned getNumber() const { return Number; } + unsigned getChildrenFlag() const { return ChildrenFlag; } + const SmallVector<DIEAbbrevData, 8> &getData() const { return Data; } + void setTag(unsigned T) { Tag = T; } + void setChildrenFlag(unsigned CF) { ChildrenFlag = CF; } + void setNumber(unsigned N) { Number = N; } + + /// AddAttribute - Adds another set of attribute information to the + /// abbreviation. + void AddAttribute(unsigned Attribute, unsigned Form) { + Data.push_back(DIEAbbrevData(Attribute, Form)); + } + + /// AddFirstAttribute - Adds a set of attribute information to the front + /// of the abbreviation. + void AddFirstAttribute(unsigned Attribute, unsigned Form) { + Data.insert(Data.begin(), DIEAbbrevData(Attribute, Form)); + } + + /// Profile - Used to gather unique data for the abbreviation folding set. + /// + void Profile(FoldingSetNodeID &ID) const; + + /// Emit - Print the abbreviation using the specified asm printer. + /// + void Emit(const AsmPrinter *Asm) const; + +#ifndef NDEBUG + void print(std::ostream *O) { + if (O) print(*O); + } + void print(std::ostream &O); + void dump(); +#endif + }; + + //===--------------------------------------------------------------------===// + /// DIE - A structured debug information entry. Has an abbreviation which + /// describes it's organization. + class CompileUnit; + class DIEValue; + + class VISIBILITY_HIDDEN DIE : public FoldingSetNode { + protected: + /// Abbrev - Buffer for constructing abbreviation. + /// + DIEAbbrev Abbrev; + + /// Offset - Offset in debug info section. + /// + unsigned Offset; + + /// Size - Size of instance + children. + /// + unsigned Size; + + /// Children DIEs. + /// + std::vector<DIE *> Children; + + /// Attributes values. + /// + SmallVector<DIEValue*, 32> Values; + + /// Abstract compile unit. + CompileUnit *AbstractCU; + public: + explicit DIE(unsigned Tag) + : Abbrev(Tag, dwarf::DW_CHILDREN_no), Offset(0), Size(0) {} + virtual ~DIE(); + + // Accessors. + DIEAbbrev &getAbbrev() { return Abbrev; } + unsigned getAbbrevNumber() const { return Abbrev.getNumber(); } + unsigned getTag() const { return Abbrev.getTag(); } + unsigned getOffset() const { return Offset; } + unsigned getSize() const { return Size; } + const std::vector<DIE *> &getChildren() const { return Children; } + SmallVector<DIEValue*, 32> &getValues() { return Values; } + CompileUnit *getAbstractCompileUnit() const { return AbstractCU; } + + void setTag(unsigned Tag) { Abbrev.setTag(Tag); } + void setOffset(unsigned O) { Offset = O; } + void setSize(unsigned S) { Size = S; } + void setAbstractCompileUnit(CompileUnit *CU) { AbstractCU = CU; } + + /// AddValue - Add a value and attributes to a DIE. + /// + void AddValue(unsigned Attribute, unsigned Form, DIEValue *Value) { + Abbrev.AddAttribute(Attribute, Form); + Values.push_back(Value); + } + + /// SiblingOffset - Return the offset of the debug information entry's + /// sibling. + unsigned SiblingOffset() const { return Offset + Size; } + + /// AddSiblingOffset - Add a sibling offset field to the front of the DIE. + /// + void AddSiblingOffset(); + + /// AddChild - Add a child to the DIE. + /// + void AddChild(DIE *Child) { + Abbrev.setChildrenFlag(dwarf::DW_CHILDREN_yes); + Children.push_back(Child); + } + + /// Detach - Detaches objects connected to it after copying. + /// + void Detach() { + Children.clear(); + } + + /// Profile - Used to gather unique data for the value folding set. + /// + void Profile(FoldingSetNodeID &ID) ; + +#ifndef NDEBUG + void print(std::ostream *O, unsigned IncIndent = 0) { + if (O) print(*O, IncIndent); + } + void print(std::ostream &O, unsigned IncIndent = 0); + void dump(); +#endif + }; + + //===--------------------------------------------------------------------===// + /// DIEValue - A debug information entry value. + /// + class VISIBILITY_HIDDEN DIEValue : public FoldingSetNode { + public: + enum { + isInteger, + isString, + isLabel, + isAsIsLabel, + isSectionOffset, + isDelta, + isEntry, + isBlock + }; + protected: + /// Type - Type of data stored in the value. + /// + unsigned Type; + public: + explicit DIEValue(unsigned T) : Type(T) {} + virtual ~DIEValue() {} + + // Accessors + unsigned getType() const { return Type; } + + /// EmitValue - Emit value via the Dwarf writer. + /// + virtual void EmitValue(Dwarf *D, unsigned Form) const = 0; + + /// SizeOf - Return the size of a value in bytes. + /// + virtual unsigned SizeOf(const TargetData *TD, unsigned Form) const = 0; + + /// Profile - Used to gather unique data for the value folding set. + /// + virtual void Profile(FoldingSetNodeID &ID) = 0; + + // Implement isa/cast/dyncast. + static bool classof(const DIEValue *) { return true; } + +#ifndef NDEBUG + void print(std::ostream *O) { + if (O) print(*O); + } + virtual void print(std::ostream &O) = 0; + void dump(); +#endif + }; + + //===--------------------------------------------------------------------===// + /// DIEInteger - An integer value DIE. + /// + class VISIBILITY_HIDDEN DIEInteger : public DIEValue { + uint64_t Integer; + public: + explicit DIEInteger(uint64_t I) : DIEValue(isInteger), Integer(I) {} + + /// BestForm - Choose the best form for integer. + /// + static unsigned BestForm(bool IsSigned, uint64_t Int) { + if (IsSigned) { + if ((char)Int == (signed)Int) return dwarf::DW_FORM_data1; + if ((short)Int == (signed)Int) return dwarf::DW_FORM_data2; + if ((int)Int == (signed)Int) return dwarf::DW_FORM_data4; + } else { + if ((unsigned char)Int == Int) return dwarf::DW_FORM_data1; + if ((unsigned short)Int == Int) return dwarf::DW_FORM_data2; + if ((unsigned int)Int == Int) return dwarf::DW_FORM_data4; + } + return dwarf::DW_FORM_data8; + } + + /// EmitValue - Emit integer of appropriate size. + /// + virtual void EmitValue(Dwarf *D, unsigned Form) const; + + /// SizeOf - Determine size of integer value in bytes. + /// + virtual unsigned SizeOf(const TargetData *TD, unsigned Form) const; + + /// Profile - Used to gather unique data for the value folding set. + /// + static void Profile(FoldingSetNodeID &ID, unsigned Int); + virtual void Profile(FoldingSetNodeID &ID); + + // Implement isa/cast/dyncast. + static bool classof(const DIEInteger *) { return true; } + static bool classof(const DIEValue *I) { return I->getType() == isInteger; } + +#ifndef NDEBUG + virtual void print(std::ostream &O); +#endif + }; + + //===--------------------------------------------------------------------===// + /// DIEString - A string value DIE. + /// + class VISIBILITY_HIDDEN DIEString : public DIEValue { + const std::string Str; + public: + explicit DIEString(const std::string &S) : DIEValue(isString), Str(S) {} + + /// EmitValue - Emit string value. + /// + virtual void EmitValue(Dwarf *D, unsigned Form) const; + + /// SizeOf - Determine size of string value in bytes. + /// + virtual unsigned SizeOf(const TargetData *, unsigned /*Form*/) const { + return Str.size() + sizeof(char); // sizeof('\0'); + } + + /// Profile - Used to gather unique data for the value folding set. + /// + static void Profile(FoldingSetNodeID &ID, const std::string &Str); + virtual void Profile(FoldingSetNodeID &ID); + + // Implement isa/cast/dyncast. + static bool classof(const DIEString *) { return true; } + static bool classof(const DIEValue *S) { return S->getType() == isString; } + +#ifndef NDEBUG + virtual void print(std::ostream &O); +#endif + }; + + //===--------------------------------------------------------------------===// + /// DIEDwarfLabel - A Dwarf internal label expression DIE. + // + class VISIBILITY_HIDDEN DIEDwarfLabel : public DIEValue { + const DWLabel Label; + public: + explicit DIEDwarfLabel(const DWLabel &L) : DIEValue(isLabel), Label(L) {} + + /// EmitValue - Emit label value. + /// + virtual void EmitValue(Dwarf *D, unsigned Form) const; + + /// SizeOf - Determine size of label value in bytes. + /// + virtual unsigned SizeOf(const TargetData *TD, unsigned Form) const; + + /// Profile - Used to gather unique data for the value folding set. + /// + static void Profile(FoldingSetNodeID &ID, const DWLabel &Label); + virtual void Profile(FoldingSetNodeID &ID); + + // Implement isa/cast/dyncast. + static bool classof(const DIEDwarfLabel *) { return true; } + static bool classof(const DIEValue *L) { return L->getType() == isLabel; } + +#ifndef NDEBUG + virtual void print(std::ostream &O); +#endif + }; + + //===--------------------------------------------------------------------===// + /// DIEObjectLabel - A label to an object in code or data. + // + class VISIBILITY_HIDDEN DIEObjectLabel : public DIEValue { + const std::string Label; + public: + explicit DIEObjectLabel(const std::string &L) + : DIEValue(isAsIsLabel), Label(L) {} + + /// EmitValue - Emit label value. + /// + virtual void EmitValue(Dwarf *D, unsigned Form) const; + + /// SizeOf - Determine size of label value in bytes. + /// + virtual unsigned SizeOf(const TargetData *TD, unsigned Form) const; + + /// Profile - Used to gather unique data for the value folding set. + /// + static void Profile(FoldingSetNodeID &ID, const std::string &Label); + virtual void Profile(FoldingSetNodeID &ID); + + // Implement isa/cast/dyncast. + static bool classof(const DIEObjectLabel *) { return true; } + static bool classof(const DIEValue *L) { + return L->getType() == isAsIsLabel; + } + +#ifndef NDEBUG + virtual void print(std::ostream &O); +#endif + }; + + //===--------------------------------------------------------------------===// + /// DIESectionOffset - A section offset DIE. + /// + class VISIBILITY_HIDDEN DIESectionOffset : public DIEValue { + const DWLabel Label; + const DWLabel Section; + bool IsEH : 1; + bool UseSet : 1; + public: + DIESectionOffset(const DWLabel &Lab, const DWLabel &Sec, + bool isEH = false, bool useSet = true) + : DIEValue(isSectionOffset), Label(Lab), Section(Sec), + IsEH(isEH), UseSet(useSet) {} + + /// EmitValue - Emit section offset. + /// + virtual void EmitValue(Dwarf *D, unsigned Form) const; + + /// SizeOf - Determine size of section offset value in bytes. + /// + virtual unsigned SizeOf(const TargetData *TD, unsigned Form) const; + + /// Profile - Used to gather unique data for the value folding set. + /// + static void Profile(FoldingSetNodeID &ID, const DWLabel &Label, + const DWLabel &Section); + virtual void Profile(FoldingSetNodeID &ID); + + // Implement isa/cast/dyncast. + static bool classof(const DIESectionOffset *) { return true; } + static bool classof(const DIEValue *D) { + return D->getType() == isSectionOffset; + } + +#ifndef NDEBUG + virtual void print(std::ostream &O); +#endif + }; + + //===--------------------------------------------------------------------===// + /// DIEDelta - A simple label difference DIE. + /// + class VISIBILITY_HIDDEN DIEDelta : public DIEValue { + const DWLabel LabelHi; + const DWLabel LabelLo; + public: + DIEDelta(const DWLabel &Hi, const DWLabel &Lo) + : DIEValue(isDelta), LabelHi(Hi), LabelLo(Lo) {} + + /// EmitValue - Emit delta value. + /// + virtual void EmitValue(Dwarf *D, unsigned Form) const; + + /// SizeOf - Determine size of delta value in bytes. + /// + virtual unsigned SizeOf(const TargetData *TD, unsigned Form) const; + + /// Profile - Used to gather unique data for the value folding set. + /// + static void Profile(FoldingSetNodeID &ID, const DWLabel &LabelHi, + const DWLabel &LabelLo); + virtual void Profile(FoldingSetNodeID &ID); + + // Implement isa/cast/dyncast. + static bool classof(const DIEDelta *) { return true; } + static bool classof(const DIEValue *D) { return D->getType() == isDelta; } + +#ifndef NDEBUG + virtual void print(std::ostream &O); +#endif + }; + + //===--------------------------------------------------------------------===// + /// DIEntry - A pointer to another debug information entry. An instance of + /// this class can also be used as a proxy for a debug information entry not + /// yet defined (ie. types.) + class VISIBILITY_HIDDEN DIEEntry : public DIEValue { + DIE *Entry; + public: + explicit DIEEntry(DIE *E) : DIEValue(isEntry), Entry(E) {} + + DIE *getEntry() const { return Entry; } + void setEntry(DIE *E) { Entry = E; } + + /// EmitValue - Emit debug information entry offset. + /// + virtual void EmitValue(Dwarf *D, unsigned Form) const; + + /// SizeOf - Determine size of debug information entry in bytes. + /// + virtual unsigned SizeOf(const TargetData *TD, unsigned Form) const { + return sizeof(int32_t); + } + + /// Profile - Used to gather unique data for the value folding set. + /// + static void Profile(FoldingSetNodeID &ID, DIE *Entry); + virtual void Profile(FoldingSetNodeID &ID); + + // Implement isa/cast/dyncast. + static bool classof(const DIEEntry *) { return true; } + static bool classof(const DIEValue *E) { return E->getType() == isEntry; } + +#ifndef NDEBUG + virtual void print(std::ostream &O); +#endif + }; + + //===--------------------------------------------------------------------===// + /// DIEBlock - A block of values. Primarily used for location expressions. + // + class DIEBlock : public DIEValue, public DIE { + unsigned Size; // Size in bytes excluding size header. + public: + DIEBlock() + : DIEValue(isBlock), DIE(0), Size(0) {} + virtual ~DIEBlock() {} + + /// ComputeSize - calculate the size of the block. + /// + unsigned ComputeSize(const TargetData *TD); + + /// BestForm - Choose the best form for data. + /// + unsigned BestForm() const { + if ((unsigned char)Size == Size) return dwarf::DW_FORM_block1; + if ((unsigned short)Size == Size) return dwarf::DW_FORM_block2; + if ((unsigned int)Size == Size) return dwarf::DW_FORM_block4; + return dwarf::DW_FORM_block; + } + + /// EmitValue - Emit block data. + /// + virtual void EmitValue(Dwarf *D, unsigned Form) const; + + /// SizeOf - Determine size of block data in bytes. + /// + virtual unsigned SizeOf(const TargetData *TD, unsigned Form) const; + + /// Profile - Used to gather unique data for the value folding set. + /// + virtual void Profile(FoldingSetNodeID &ID); + + // Implement isa/cast/dyncast. + static bool classof(const DIEBlock *) { return true; } + static bool classof(const DIEValue *E) { return E->getType() == isBlock; } + +#ifndef NDEBUG + virtual void print(std::ostream &O); +#endif + }; + +} // end llvm namespace + +#endif diff --git a/lib/CodeGen/AsmPrinter/DwarfLabel.cpp b/lib/CodeGen/AsmPrinter/DwarfLabel.cpp new file mode 100644 index 0000000..8021b7c --- /dev/null +++ b/lib/CodeGen/AsmPrinter/DwarfLabel.cpp @@ -0,0 +1,35 @@ +//===--- lib/CodeGen/DwarfLabel.cpp - Dwarf Label -------------------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// DWARF Labels +// +//===----------------------------------------------------------------------===// + +#include "DwarfLabel.h" +#include "llvm/ADT/FoldingSet.h" +#include <ostream> + +using namespace llvm; + +/// Profile - Used to gather unique data for the folding set. +/// +void DWLabel::Profile(FoldingSetNodeID &ID) const { + ID.AddString(Tag); + ID.AddInteger(Number); +} + +#ifndef NDEBUG +void DWLabel::print(std::ostream *O) const { + if (O) print(*O); +} +void DWLabel::print(std::ostream &O) const { + O << "." << Tag; + if (Number) O << Number; +} +#endif diff --git a/lib/CodeGen/AsmPrinter/DwarfLabel.h b/lib/CodeGen/AsmPrinter/DwarfLabel.h new file mode 100644 index 0000000..ee093d9 --- /dev/null +++ b/lib/CodeGen/AsmPrinter/DwarfLabel.h @@ -0,0 +1,56 @@ +//===--- lib/CodeGen/DwarfLabel.h - Dwarf Label -----------------*- C++ -*-===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// DWARF Labels. +// +//===----------------------------------------------------------------------===// + +#ifndef DWARFLABEL_H__ +#define DWARFLABEL_H__ + +#include "llvm/Support/Compiler.h" +#include <iosfwd> +#include <vector> + +namespace llvm { + class FoldingSetNodeID; + + //===--------------------------------------------------------------------===// + /// DWLabel - Labels are used to track locations in the assembler file. + /// Labels appear in the form @verbatim <prefix><Tag><Number> @endverbatim, + /// where the tag is a category of label (Ex. location) and number is a value + /// unique in that category. + class VISIBILITY_HIDDEN DWLabel { + /// Tag - Label category tag. Should always be a statically declared C + /// string. + /// + const char *Tag; + + /// Number - Value to make label unique. + /// + unsigned Number; + public: + DWLabel(const char *T, unsigned N) : Tag(T), Number(N) {} + + // Accessors. + const char *getTag() const { return Tag; } + unsigned getNumber() const { return Number; } + + /// Profile - Used to gather unique data for the folding set. + /// + void Profile(FoldingSetNodeID &ID) const; + +#ifndef NDEBUG + void print(std::ostream *O) const; + void print(std::ostream &O) const; +#endif + }; +} // end llvm namespace + +#endif diff --git a/lib/CodeGen/AsmPrinter/DwarfPrinter.cpp b/lib/CodeGen/AsmPrinter/DwarfPrinter.cpp new file mode 100644 index 0000000..45e7dd3 --- /dev/null +++ b/lib/CodeGen/AsmPrinter/DwarfPrinter.cpp @@ -0,0 +1,235 @@ +//===--- lib/CodeGen/DwarfPrinter.cpp - Dwarf Printer ---------------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// Emit general DWARF directives. +// +//===----------------------------------------------------------------------===// + +#include "DwarfPrinter.h" +#include "llvm/Module.h" +#include "llvm/CodeGen/AsmPrinter.h" +#include "llvm/CodeGen/MachineFrameInfo.h" +#include "llvm/CodeGen/MachineModuleInfo.h" +#include "llvm/Support/Dwarf.h" +#include "llvm/Target/TargetAsmInfo.h" +#include "llvm/Target/TargetData.h" +#include "llvm/Target/TargetFrameInfo.h" +#include "llvm/Target/TargetRegisterInfo.h" +#include <ostream> + +using namespace llvm; + +Dwarf::Dwarf(raw_ostream &OS, AsmPrinter *A, const TargetAsmInfo *T, + const char *flavor) +: O(OS), Asm(A), TAI(T), TD(Asm->TM.getTargetData()), + RI(Asm->TM.getRegisterInfo()), M(NULL), MF(NULL), MMI(NULL), + SubprogramCount(0), Flavor(flavor), SetCounter(1) {} + +void Dwarf::PrintRelDirective(bool Force32Bit, bool isInSection) const { + if (isInSection && TAI->getDwarfSectionOffsetDirective()) + O << TAI->getDwarfSectionOffsetDirective(); + else if (Force32Bit || TD->getPointerSize() == sizeof(int32_t)) + O << TAI->getData32bitsDirective(); + else + O << TAI->getData64bitsDirective(); +} + +/// PrintLabelName - Print label name in form used by Dwarf writer. +/// +void Dwarf::PrintLabelName(const char *Tag, unsigned Number) const { + O << TAI->getPrivateGlobalPrefix() << Tag; + if (Number) O << Number; +} +void Dwarf::PrintLabelName(const char *Tag, unsigned Number, + const char *Suffix) const { + O << TAI->getPrivateGlobalPrefix() << Tag; + if (Number) O << Number; + O << Suffix; +} + +/// EmitLabel - Emit location label for internal use by Dwarf. +/// +void Dwarf::EmitLabel(const char *Tag, unsigned Number) const { + PrintLabelName(Tag, Number); + O << ":\n"; +} + +/// EmitReference - Emit a reference to a label. +/// +void Dwarf::EmitReference(const char *Tag, unsigned Number, + bool IsPCRelative, bool Force32Bit) const { + PrintRelDirective(Force32Bit); + PrintLabelName(Tag, Number); + if (IsPCRelative) O << "-" << TAI->getPCSymbol(); +} +void Dwarf::EmitReference(const std::string &Name, bool IsPCRelative, + bool Force32Bit) const { + PrintRelDirective(Force32Bit); + O << Name; + if (IsPCRelative) O << "-" << TAI->getPCSymbol(); +} + +/// 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 Dwarf::EmitDifference(const char *TagHi, unsigned NumberHi, + const char *TagLo, unsigned NumberLo, + bool IsSmall) { + if (TAI->needsSet()) { + O << "\t.set\t"; + PrintLabelName("set", SetCounter, Flavor); + O << ","; + PrintLabelName(TagHi, NumberHi); + O << "-"; + PrintLabelName(TagLo, NumberLo); + O << "\n"; + + PrintRelDirective(IsSmall); + PrintLabelName("set", SetCounter, Flavor); + ++SetCounter; + } else { + PrintRelDirective(IsSmall); + PrintLabelName(TagHi, NumberHi); + O << "-"; + PrintLabelName(TagLo, NumberLo); + } +} + +void Dwarf::EmitSectionOffset(const char* Label, const char* Section, + unsigned LabelNumber, unsigned SectionNumber, + bool IsSmall, bool isEH, + bool useSet) { + bool printAbsolute = false; + if (isEH) + printAbsolute = TAI->isAbsoluteEHSectionOffsets(); + else + printAbsolute = TAI->isAbsoluteDebugSectionOffsets(); + + if (TAI->needsSet() && useSet) { + O << "\t.set\t"; + PrintLabelName("set", SetCounter, Flavor); + O << ","; + PrintLabelName(Label, LabelNumber); + + if (!printAbsolute) { + O << "-"; + PrintLabelName(Section, SectionNumber); + } + + O << "\n"; + PrintRelDirective(IsSmall); + PrintLabelName("set", SetCounter, Flavor); + ++SetCounter; + } else { + PrintRelDirective(IsSmall, true); + PrintLabelName(Label, LabelNumber); + + if (!printAbsolute) { + O << "-"; + PrintLabelName(Section, SectionNumber); + } + } +} + +/// EmitFrameMoves - Emit frame instructions to describe the layout of the +/// frame. +void Dwarf::EmitFrameMoves(const char *BaseLabel, unsigned BaseLabelID, + const std::vector<MachineMove> &Moves, bool isEH) { + int stackGrowth = + Asm->TM.getFrameInfo()->getStackGrowthDirection() == + TargetFrameInfo::StackGrowsUp ? + TD->getPointerSize() : -TD->getPointerSize(); + bool IsLocal = BaseLabel && strcmp(BaseLabel, "label") == 0; + + for (unsigned i = 0, N = Moves.size(); i < N; ++i) { + const MachineMove &Move = Moves[i]; + unsigned LabelID = Move.getLabelID(); + + if (LabelID) { + LabelID = MMI->MappedLabel(LabelID); + + // Throw out move if the label is invalid. + if (!LabelID) continue; + } + + const MachineLocation &Dst = Move.getDestination(); + const MachineLocation &Src = Move.getSource(); + + // Advance row if new location. + if (BaseLabel && LabelID && (BaseLabelID != LabelID || !IsLocal)) { + Asm->EmitInt8(dwarf::DW_CFA_advance_loc4); + Asm->EOL("DW_CFA_advance_loc4"); + EmitDifference("label", LabelID, BaseLabel, BaseLabelID, true); + Asm->EOL(); + + BaseLabelID = LabelID; + BaseLabel = "label"; + IsLocal = true; + } + + // If advancing cfa. + if (Dst.isReg() && Dst.getReg() == MachineLocation::VirtualFP) { + if (!Src.isReg()) { + if (Src.getReg() == MachineLocation::VirtualFP) { + Asm->EmitInt8(dwarf::DW_CFA_def_cfa_offset); + Asm->EOL("DW_CFA_def_cfa_offset"); + } else { + Asm->EmitInt8(dwarf::DW_CFA_def_cfa); + Asm->EOL("DW_CFA_def_cfa"); + Asm->EmitULEB128Bytes(RI->getDwarfRegNum(Src.getReg(), isEH)); + Asm->EOL("Register"); + } + + int Offset = -Src.getOffset(); + + Asm->EmitULEB128Bytes(Offset); + Asm->EOL("Offset"); + } else { + assert(0 && "Machine move no supported yet."); + } + } else if (Src.isReg() && + Src.getReg() == MachineLocation::VirtualFP) { + if (Dst.isReg()) { + Asm->EmitInt8(dwarf::DW_CFA_def_cfa_register); + Asm->EOL("DW_CFA_def_cfa_register"); + Asm->EmitULEB128Bytes(RI->getDwarfRegNum(Dst.getReg(), isEH)); + Asm->EOL("Register"); + } else { + assert(0 && "Machine move no supported yet."); + } + } else { + unsigned Reg = RI->getDwarfRegNum(Src.getReg(), isEH); + int Offset = Dst.getOffset() / stackGrowth; + + if (Offset < 0) { + Asm->EmitInt8(dwarf::DW_CFA_offset_extended_sf); + Asm->EOL("DW_CFA_offset_extended_sf"); + Asm->EmitULEB128Bytes(Reg); + Asm->EOL("Reg"); + Asm->EmitSLEB128Bytes(Offset); + Asm->EOL("Offset"); + } else if (Reg < 64) { + Asm->EmitInt8(dwarf::DW_CFA_offset + Reg); + if (Asm->isVerbose()) + Asm->EOL("DW_CFA_offset + Reg (" + utostr(Reg) + ")"); + else + Asm->EOL(); + Asm->EmitULEB128Bytes(Offset); + Asm->EOL("Offset"); + } else { + Asm->EmitInt8(dwarf::DW_CFA_offset_extended); + Asm->EOL("DW_CFA_offset_extended"); + Asm->EmitULEB128Bytes(Reg); + Asm->EOL("Reg"); + Asm->EmitULEB128Bytes(Offset); + Asm->EOL("Offset"); + } + } + } +} diff --git a/lib/CodeGen/AsmPrinter/DwarfPrinter.h b/lib/CodeGen/AsmPrinter/DwarfPrinter.h new file mode 100644 index 0000000..1ca72f4 --- /dev/null +++ b/lib/CodeGen/AsmPrinter/DwarfPrinter.h @@ -0,0 +1,153 @@ +//===--- lib/CodeGen/DwarfPrinter.h - Dwarf Printer -------------*- C++ -*-===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// Emit general DWARF directives. +// +//===----------------------------------------------------------------------===// + +#ifndef DWARFPRINTER_H__ +#define DWARFPRINTER_H__ + +#include "DwarfLabel.h" +#include "llvm/CodeGen/MachineLocation.h" +#include "llvm/Support/Compiler.h" +#include "llvm/Support/raw_ostream.h" +#include <vector> + +namespace llvm { + class AsmPrinter; + class MachineFunction; + class MachineModuleInfo; + class Module; + class TargetAsmInfo; + class TargetData; + class TargetRegisterInfo; + + class VISIBILITY_HIDDEN Dwarf { + protected: + //===-------------------------------------------------------------==---===// + // Core attributes used by the DWARF printer. + // + + /// O - Stream to .s file. + /// + raw_ostream &O; + + /// Asm - Target of Dwarf emission. + /// + AsmPrinter *Asm; + + /// TAI - Target asm information. + /// + const TargetAsmInfo *TAI; + + /// TD - Target data. + /// + const TargetData *TD; + + /// RI - Register Information. + /// + const TargetRegisterInfo *RI; + + /// M - Current module. + /// + Module *M; + + /// MF - Current machine function. + /// + MachineFunction *MF; + + /// MMI - Collected machine module information. + /// + MachineModuleInfo *MMI; + + /// SubprogramCount - The running count of functions being compiled. + /// + unsigned SubprogramCount; + + /// Flavor - A unique string indicating what dwarf producer this is, used to + /// unique labels. + /// + const char * const Flavor; + + /// SetCounter - A unique number for each '.set' directive. + /// + unsigned SetCounter; + + Dwarf(raw_ostream &OS, AsmPrinter *A, const TargetAsmInfo *T, + const char *flavor); + public: + //===------------------------------------------------------------------===// + // Accessors. + // + const AsmPrinter *getAsm() const { return Asm; } + MachineModuleInfo *getMMI() const { return MMI; } + const TargetAsmInfo *getTargetAsmInfo() const { return TAI; } + const TargetData *getTargetData() const { return TD; } + + void PrintRelDirective(bool Force32Bit = false, + bool isInSection = false) const; + + + /// PrintLabelName - Print label name in form used by Dwarf writer. + /// + void PrintLabelName(const DWLabel &Label) const { + PrintLabelName(Label.getTag(), Label.getNumber()); + } + void PrintLabelName(const char *Tag, unsigned Number) const; + void PrintLabelName(const char *Tag, unsigned Number, + const char *Suffix) const; + + /// EmitLabel - Emit location label for internal use by Dwarf. + /// + void EmitLabel(const DWLabel &Label) const { + EmitLabel(Label.getTag(), Label.getNumber()); + } + void EmitLabel(const char *Tag, unsigned Number) const; + + /// EmitReference - Emit a reference to a label. + /// + void EmitReference(const DWLabel &Label, bool IsPCRelative = false, + bool Force32Bit = false) const { + EmitReference(Label.getTag(), Label.getNumber(), + IsPCRelative, Force32Bit); + } + void EmitReference(const char *Tag, unsigned Number, + bool IsPCRelative = false, + bool Force32Bit = false) const; + void EmitReference(const std::string &Name, bool IsPCRelative = false, + bool Force32Bit = false) 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(const DWLabel &LabelHi, const DWLabel &LabelLo, + bool IsSmall = false) { + EmitDifference(LabelHi.getTag(), LabelHi.getNumber(), + LabelLo.getTag(), LabelLo.getNumber(), + IsSmall); + } + void EmitDifference(const char *TagHi, unsigned NumberHi, + const char *TagLo, unsigned NumberLo, + bool IsSmall = false); + + void EmitSectionOffset(const char* Label, const char* Section, + unsigned LabelNumber, unsigned SectionNumber, + bool IsSmall = false, bool isEH = false, + bool useSet = true); + + /// EmitFrameMoves - Emit frame instructions to describe the layout of the + /// frame. + void EmitFrameMoves(const char *BaseLabel, unsigned BaseLabelID, + const std::vector<MachineMove> &Moves, bool isEH); +}; + +} // end llvm namespace + +#endif diff --git a/lib/CodeGen/AsmPrinter/DwarfWriter.cpp b/lib/CodeGen/AsmPrinter/DwarfWriter.cpp index c77a753..83275fb 100644 --- a/lib/CodeGen/AsmPrinter/DwarfWriter.cpp +++ b/lib/CodeGen/AsmPrinter/DwarfWriter.cpp @@ -12,6 +12,8 @@ //===----------------------------------------------------------------------===// #include "llvm/CodeGen/DwarfWriter.h" +#include "DIE.h" +#include "DwarfPrinter.h" #include "llvm/Module.h" #include "llvm/DerivedTypes.h" #include "llvm/Constants.h" @@ -64,633 +66,6 @@ static const unsigned InitAbbreviationsSetSize = 9; // log2(512) static const unsigned InitValuesSetSize = 9; // log2(512) //===----------------------------------------------------------------------===// -/// Forward declarations. -/// -class DIE; -class DIEValue; - -//===----------------------------------------------------------------------===// -/// DWLabel - Labels are used to track locations in the assembler file. -/// Labels appear in the form @verbatim <prefix><Tag><Number> @endverbatim, -/// where the tag is a category of label (Ex. location) and number is a value -/// unique in that category. -class DWLabel { -public: - /// Tag - Label category tag. Should always be a staticly declared C string. - /// - const char *Tag; - - /// Number - Value to make label unique. - /// - unsigned Number; - - DWLabel(const char *T, unsigned N) : Tag(T), Number(N) {} - - void Profile(FoldingSetNodeID &ID) const { - ID.AddString(Tag); - ID.AddInteger(Number); - } - -#ifndef NDEBUG - void print(std::ostream *O) const { - if (O) print(*O); - } - void print(std::ostream &O) const { - O << "." << Tag; - if (Number) O << Number; - } -#endif -}; - -//===----------------------------------------------------------------------===// -/// DIEAbbrevData - Dwarf abbreviation data, describes the one attribute of a -/// Dwarf abbreviation. -class DIEAbbrevData { - /// Attribute - Dwarf attribute code. - /// - unsigned Attribute; - - /// Form - Dwarf form code. - /// - unsigned Form; -public: - DIEAbbrevData(unsigned A, unsigned F) : Attribute(A), Form(F) {} - - // Accessors. - unsigned getAttribute() const { return Attribute; } - unsigned getForm() const { return Form; } - - /// Profile - Used to gather unique data for the abbreviation folding set. - /// - void Profile(FoldingSetNodeID &ID)const { - ID.AddInteger(Attribute); - ID.AddInteger(Form); - } -}; - -//===----------------------------------------------------------------------===// -/// DIEAbbrev - Dwarf abbreviation, describes the organization of a debug -/// information object. -class DIEAbbrev : public FoldingSetNode { -private: - /// Tag - Dwarf tag code. - /// - unsigned Tag; - - /// Unique number for node. - /// - unsigned Number; - - /// ChildrenFlag - Dwarf children flag. - /// - unsigned ChildrenFlag; - - /// Data - Raw data bytes for abbreviation. - /// - SmallVector<DIEAbbrevData, 8> Data; -public: - DIEAbbrev(unsigned T, unsigned C) : Tag(T), ChildrenFlag(C), Data() {} - virtual ~DIEAbbrev() {} - - // Accessors. - unsigned getTag() const { return Tag; } - unsigned getNumber() const { return Number; } - unsigned getChildrenFlag() const { return ChildrenFlag; } - const SmallVector<DIEAbbrevData, 8> &getData() const { return Data; } - void setTag(unsigned T) { Tag = T; } - void setChildrenFlag(unsigned CF) { ChildrenFlag = CF; } - void setNumber(unsigned N) { Number = N; } - - /// AddAttribute - Adds another set of attribute information to the - /// abbreviation. - void AddAttribute(unsigned Attribute, unsigned Form) { - Data.push_back(DIEAbbrevData(Attribute, Form)); - } - - /// AddFirstAttribute - Adds a set of attribute information to the front - /// of the abbreviation. - void AddFirstAttribute(unsigned Attribute, unsigned Form) { - Data.insert(Data.begin(), DIEAbbrevData(Attribute, Form)); - } - - /// Profile - Used to gather unique data for the abbreviation folding set. - /// - void Profile(FoldingSetNodeID &ID) { - ID.AddInteger(Tag); - ID.AddInteger(ChildrenFlag); - - // For each attribute description. - for (unsigned i = 0, N = Data.size(); i < N; ++i) - Data[i].Profile(ID); - } - - /// Emit - Print the abbreviation using the specified Dwarf writer. - /// - void Emit(const DwarfDebug &DD) const; - -#ifndef NDEBUG - void print(std::ostream *O) { - if (O) print(*O); - } - void print(std::ostream &O); - void dump(); -#endif -}; - -//===----------------------------------------------------------------------===// -/// DIE - A structured debug information entry. Has an abbreviation which -/// describes it's organization. -class CompileUnit; -class DIE : public FoldingSetNode { -protected: - /// Abbrev - Buffer for constructing abbreviation. - /// - DIEAbbrev Abbrev; - - /// Offset - Offset in debug info section. - /// - unsigned Offset; - - /// Size - Size of instance + children. - /// - unsigned Size; - - /// Children DIEs. - /// - std::vector<DIE *> Children; - - /// Attributes values. - /// - SmallVector<DIEValue*, 32> Values; - - /// Abstract compile unit. - CompileUnit *AbstractCU; -public: - explicit DIE(unsigned Tag) - : Abbrev(Tag, DW_CHILDREN_no), Offset(0), Size(0) {} - virtual ~DIE(); - - // Accessors. - DIEAbbrev &getAbbrev() { return Abbrev; } - unsigned getAbbrevNumber() const { - return Abbrev.getNumber(); - } - unsigned getTag() const { return Abbrev.getTag(); } - unsigned getOffset() const { return Offset; } - unsigned getSize() const { return Size; } - const std::vector<DIE *> &getChildren() const { return Children; } - SmallVector<DIEValue*, 32> &getValues() { return Values; } - CompileUnit *getAbstractCompileUnit() const { return AbstractCU; } - - void setTag(unsigned Tag) { Abbrev.setTag(Tag); } - void setOffset(unsigned O) { Offset = O; } - void setSize(unsigned S) { Size = S; } - void setAbstractCompileUnit(CompileUnit *CU) { AbstractCU = CU; } - - /// AddValue - Add a value and attributes to a DIE. - /// - void AddValue(unsigned Attribute, unsigned Form, DIEValue *Value) { - Abbrev.AddAttribute(Attribute, Form); - Values.push_back(Value); - } - - /// SiblingOffset - Return the offset of the debug information entry's - /// sibling. - unsigned SiblingOffset() const { return Offset + Size; } - - /// AddSiblingOffset - Add a sibling offset field to the front of the DIE. - /// - void AddSiblingOffset(); - - /// AddChild - Add a child to the DIE. - /// - void AddChild(DIE *Child) { - Abbrev.setChildrenFlag(DW_CHILDREN_yes); - Children.push_back(Child); - } - - /// Detach - Detaches objects connected to it after copying. - /// - void Detach() { - Children.clear(); - } - - /// Profile - Used to gather unique data for the value folding set. - /// - void Profile(FoldingSetNodeID &ID) ; - -#ifndef NDEBUG - void print(std::ostream *O, unsigned IncIndent = 0) { - if (O) print(*O, IncIndent); - } - void print(std::ostream &O, unsigned IncIndent = 0); - void dump(); -#endif -}; - -//===----------------------------------------------------------------------===// -/// DIEValue - A debug information entry value. -/// -class DIEValue : public FoldingSetNode { -public: - enum { - isInteger, - isString, - isLabel, - isAsIsLabel, - isSectionOffset, - isDelta, - isEntry, - isBlock - }; - - /// Type - Type of data stored in the value. - /// - unsigned Type; - - explicit DIEValue(unsigned T) : Type(T) {} - virtual ~DIEValue() {} - - // Accessors - unsigned getType() const { return Type; } - - // Implement isa/cast/dyncast. - static bool classof(const DIEValue *) { return true; } - - /// EmitValue - Emit value via the Dwarf writer. - /// - virtual void EmitValue(DwarfDebug &DD, unsigned Form) = 0; - - /// SizeOf - Return the size of a value in bytes. - /// - virtual unsigned SizeOf(const DwarfDebug &DD, unsigned Form) const = 0; - - /// Profile - Used to gather unique data for the value folding set. - /// - virtual void Profile(FoldingSetNodeID &ID) = 0; - -#ifndef NDEBUG - void print(std::ostream *O) { - if (O) print(*O); - } - virtual void print(std::ostream &O) = 0; - void dump(); -#endif -}; - -//===----------------------------------------------------------------------===// -/// DWInteger - An integer value DIE. -/// -class DIEInteger : public DIEValue { -private: - uint64_t Integer; - -public: - explicit DIEInteger(uint64_t I) : DIEValue(isInteger), Integer(I) {} - - // Implement isa/cast/dyncast. - static bool classof(const DIEInteger *) { return true; } - static bool classof(const DIEValue *I) { return I->Type == isInteger; } - - /// BestForm - Choose the best form for integer. - /// - static unsigned BestForm(bool IsSigned, uint64_t Integer) { - if (IsSigned) { - if ((char)Integer == (signed)Integer) return DW_FORM_data1; - if ((short)Integer == (signed)Integer) return DW_FORM_data2; - if ((int)Integer == (signed)Integer) return DW_FORM_data4; - } else { - if ((unsigned char)Integer == Integer) return DW_FORM_data1; - if ((unsigned short)Integer == Integer) return DW_FORM_data2; - if ((unsigned int)Integer == Integer) return DW_FORM_data4; - } - return DW_FORM_data8; - } - - /// EmitValue - Emit integer of appropriate size. - /// - virtual void EmitValue(DwarfDebug &DD, unsigned Form); - - /// SizeOf - Determine size of integer value in bytes. - /// - virtual unsigned SizeOf(const DwarfDebug &DD, unsigned Form) const; - - /// Profile - Used to gather unique data for the value folding set. - /// - static void Profile(FoldingSetNodeID &ID, unsigned Integer) { - ID.AddInteger(isInteger); - ID.AddInteger(Integer); - } - virtual void Profile(FoldingSetNodeID &ID) { Profile(ID, Integer); } - -#ifndef NDEBUG - virtual void print(std::ostream &O) { - O << "Int: " << (int64_t)Integer - << " 0x" << std::hex << Integer << std::dec; - } -#endif -}; - -//===----------------------------------------------------------------------===// -/// DIEString - A string value DIE. -/// -class DIEString : public DIEValue { - const std::string Str; -public: - explicit DIEString(const std::string &S) : DIEValue(isString), Str(S) {} - - // Implement isa/cast/dyncast. - static bool classof(const DIEString *) { return true; } - static bool classof(const DIEValue *S) { return S->Type == isString; } - - /// EmitValue - Emit string value. - /// - virtual void EmitValue(DwarfDebug &DD, unsigned Form); - - /// SizeOf - Determine size of string value in bytes. - /// - virtual unsigned SizeOf(const DwarfDebug &DD, unsigned Form) const { - return Str.size() + sizeof(char); // sizeof('\0'); - } - - /// Profile - Used to gather unique data for the value folding set. - /// - static void Profile(FoldingSetNodeID &ID, const std::string &Str) { - ID.AddInteger(isString); - ID.AddString(Str); - } - virtual void Profile(FoldingSetNodeID &ID) { Profile(ID, Str); } - -#ifndef NDEBUG - virtual void print(std::ostream &O) { - O << "Str: \"" << Str << "\""; - } -#endif -}; - -//===----------------------------------------------------------------------===// -/// DIEDwarfLabel - A Dwarf internal label expression DIE. -// -class DIEDwarfLabel : public DIEValue { - const DWLabel Label; -public: - explicit DIEDwarfLabel(const DWLabel &L) : DIEValue(isLabel), Label(L) {} - - // Implement isa/cast/dyncast. - static bool classof(const DIEDwarfLabel *) { return true; } - static bool classof(const DIEValue *L) { return L->Type == isLabel; } - - /// EmitValue - Emit label value. - /// - virtual void EmitValue(DwarfDebug &DD, unsigned Form); - - /// SizeOf - Determine size of label value in bytes. - /// - virtual unsigned SizeOf(const DwarfDebug &DD, unsigned Form) const; - - /// Profile - Used to gather unique data for the value folding set. - /// - static void Profile(FoldingSetNodeID &ID, const DWLabel &Label) { - ID.AddInteger(isLabel); - Label.Profile(ID); - } - virtual void Profile(FoldingSetNodeID &ID) { Profile(ID, Label); } - -#ifndef NDEBUG - virtual void print(std::ostream &O) { - O << "Lbl: "; - Label.print(O); - } -#endif -}; - -//===----------------------------------------------------------------------===// -/// DIEObjectLabel - A label to an object in code or data. -// -class DIEObjectLabel : public DIEValue { - const std::string Label; -public: - explicit DIEObjectLabel(const std::string &L) - : DIEValue(isAsIsLabel), Label(L) {} - - // Implement isa/cast/dyncast. - static bool classof(const DIEObjectLabel *) { return true; } - static bool classof(const DIEValue *L) { return L->Type == isAsIsLabel; } - - /// EmitValue - Emit label value. - /// - virtual void EmitValue(DwarfDebug &DD, unsigned Form); - - /// SizeOf - Determine size of label value in bytes. - /// - virtual unsigned SizeOf(const DwarfDebug &DD, unsigned Form) const; - - /// Profile - Used to gather unique data for the value folding set. - /// - static void Profile(FoldingSetNodeID &ID, const std::string &Label) { - ID.AddInteger(isAsIsLabel); - ID.AddString(Label); - } - virtual void Profile(FoldingSetNodeID &ID) { Profile(ID, Label.c_str()); } - -#ifndef NDEBUG - virtual void print(std::ostream &O) { - O << "Obj: " << Label; - } -#endif -}; - -//===----------------------------------------------------------------------===// -/// DIESectionOffset - A section offset DIE. -// -class DIESectionOffset : public DIEValue { - const DWLabel Label; - const DWLabel Section; - bool IsEH : 1; - bool UseSet : 1; -public: - DIESectionOffset(const DWLabel &Lab, const DWLabel &Sec, - bool isEH = false, bool useSet = true) - : DIEValue(isSectionOffset), Label(Lab), Section(Sec), - IsEH(isEH), UseSet(useSet) {} - - // Implement isa/cast/dyncast. - static bool classof(const DIESectionOffset *) { return true; } - static bool classof(const DIEValue *D) { return D->Type == isSectionOffset; } - - /// EmitValue - Emit section offset. - /// - virtual void EmitValue(DwarfDebug &DD, unsigned Form); - - /// SizeOf - Determine size of section offset value in bytes. - /// - virtual unsigned SizeOf(const DwarfDebug &DD, unsigned Form) const; - - /// Profile - Used to gather unique data for the value folding set. - /// - static void Profile(FoldingSetNodeID &ID, const DWLabel &Label, - const DWLabel &Section) { - ID.AddInteger(isSectionOffset); - Label.Profile(ID); - Section.Profile(ID); - // IsEH and UseSet are specific to the Label/Section that we will emit - // the offset for; so Label/Section are enough for uniqueness. - } - virtual void Profile(FoldingSetNodeID &ID) { Profile(ID, Label, Section); } - -#ifndef NDEBUG - virtual void print(std::ostream &O) { - O << "Off: "; - Label.print(O); - O << "-"; - Section.print(O); - O << "-" << IsEH << "-" << UseSet; - } -#endif -}; - -//===----------------------------------------------------------------------===// -/// DIEDelta - A simple label difference DIE. -/// -class DIEDelta : public DIEValue { - const DWLabel LabelHi; - const DWLabel LabelLo; -public: - DIEDelta(const DWLabel &Hi, const DWLabel &Lo) - : DIEValue(isDelta), LabelHi(Hi), LabelLo(Lo) {} - - // Implement isa/cast/dyncast. - static bool classof(const DIEDelta *) { return true; } - static bool classof(const DIEValue *D) { return D->Type == isDelta; } - - /// EmitValue - Emit delta value. - /// - virtual void EmitValue(DwarfDebug &DD, unsigned Form); - - /// SizeOf - Determine size of delta value in bytes. - /// - virtual unsigned SizeOf(const DwarfDebug &DD, unsigned Form) const; - - /// Profile - Used to gather unique data for the value folding set. - /// - static void Profile(FoldingSetNodeID &ID, const DWLabel &LabelHi, - const DWLabel &LabelLo) { - ID.AddInteger(isDelta); - LabelHi.Profile(ID); - LabelLo.Profile(ID); - } - virtual void Profile(FoldingSetNodeID &ID) { Profile(ID, LabelHi, LabelLo); } - -#ifndef NDEBUG - virtual void print(std::ostream &O) { - O << "Del: "; - LabelHi.print(O); - O << "-"; - LabelLo.print(O); - } -#endif -}; - -//===----------------------------------------------------------------------===// -/// DIEntry - A pointer to another debug information entry. An instance of this -/// class can also be used as a proxy for a debug information entry not yet -/// defined (ie. types.) -class DIEntry : public DIEValue { - DIE *Entry; -public: - explicit DIEntry(DIE *E) : DIEValue(isEntry), Entry(E) {} - - DIE *getEntry() const { return Entry; } - void setEntry(DIE *E) { Entry = E; } - - // Implement isa/cast/dyncast. - static bool classof(const DIEntry *) { return true; } - static bool classof(const DIEValue *E) { return E->Type == isEntry; } - - /// EmitValue - Emit debug information entry offset. - /// - virtual void EmitValue(DwarfDebug &DD, unsigned Form); - - /// SizeOf - Determine size of debug information entry in bytes. - /// - virtual unsigned SizeOf(const DwarfDebug &DD, unsigned Form) const { - return sizeof(int32_t); - } - - /// Profile - Used to gather unique data for the value folding set. - /// - static void Profile(FoldingSetNodeID &ID, DIE *Entry) { - ID.AddInteger(isEntry); - ID.AddPointer(Entry); - } - virtual void Profile(FoldingSetNodeID &ID) { - ID.AddInteger(isEntry); - - if (Entry) { - ID.AddPointer(Entry); - } else { - ID.AddPointer(this); - } - } - -#ifndef NDEBUG - virtual void print(std::ostream &O) { - O << "Die: 0x" << std::hex << (intptr_t)Entry << std::dec; - } -#endif -}; - -//===----------------------------------------------------------------------===// -/// DIEBlock - A block of values. Primarily used for location expressions. -// -class DIEBlock : public DIEValue, public DIE { - unsigned Size; // Size in bytes excluding size header. -public: - DIEBlock() - : DIEValue(isBlock), DIE(0), Size(0) {} - virtual ~DIEBlock() {} - - // Implement isa/cast/dyncast. - static bool classof(const DIEBlock *) { return true; } - static bool classof(const DIEValue *E) { return E->Type == isBlock; } - - /// ComputeSize - calculate the size of the block. - /// - unsigned ComputeSize(DwarfDebug &DD); - - /// BestForm - Choose the best form for data. - /// - unsigned BestForm() const { - if ((unsigned char)Size == Size) return DW_FORM_block1; - if ((unsigned short)Size == Size) return DW_FORM_block2; - if ((unsigned int)Size == Size) return DW_FORM_block4; - return DW_FORM_block; - } - - /// EmitValue - Emit block data. - /// - virtual void EmitValue(DwarfDebug &DD, unsigned Form); - - /// SizeOf - Determine size of block data in bytes. - /// - virtual unsigned SizeOf(const DwarfDebug &DD, unsigned Form) const; - - /// Profile - Used to gather unique data for the value folding set. - /// - virtual void Profile(FoldingSetNodeID &ID) { - ID.AddInteger(isBlock); - DIE::Profile(ID); - } - -#ifndef NDEBUG - virtual void print(std::ostream &O) { - O << "Blk: "; - DIE::print(O, 5); - } -#endif -}; - -//===----------------------------------------------------------------------===// /// CompileUnit - This dwarf writer support class manages information associate /// with a source file. class CompileUnit { @@ -706,9 +81,9 @@ class CompileUnit { /// variables to debug information entries. std::map<GlobalVariable *, DIE *> GVToDieMap; - /// GVToDIEntryMap - Tracks the mapping of unit level debug informaton - /// descriptors to debug information entries using a DIEntry proxy. - std::map<GlobalVariable *, DIEntry *> GVToDIEntryMap; + /// GVToDIEEntryMap - Tracks the mapping of unit level debug informaton + /// descriptors to debug information entries using a DIEEntry proxy. + std::map<GlobalVariable *, DIEEntry *> GVToDIEEntryMap; /// Globals - A map of globally visible named entities for this unit. /// @@ -720,7 +95,7 @@ class CompileUnit { public: CompileUnit(unsigned I, DIE *D) : ID(I), Die(D), GVToDieMap(), - GVToDIEntryMap(), Globals(), DiesSet(InitDiesSetSize) + GVToDIEEntryMap(), Globals(), DiesSet(InitDiesSetSize) {} ~CompileUnit() { @@ -750,10 +125,10 @@ public: return GVToDieMap[GV]; } - /// getDIEntrySlotFor - Returns the debug information entry proxy slot for the + /// getDIEEntrySlotFor - Returns the debug information entry proxy slot for the /// specified debug variable. - DIEntry *&getDIEntrySlotFor(GlobalVariable *GV) { - return GVToDIEntryMap[GV]; + DIEEntry *&getDIEEntrySlotFor(GlobalVariable *GV) { + return GVToDIEEntryMap[GV]; } /// AddDie - Adds or interns the DIE to the compile unit. @@ -776,315 +151,13 @@ public: }; //===----------------------------------------------------------------------===// -/// Dwarf - Emits general Dwarf directives. -/// -class Dwarf { -protected: - //===--------------------------------------------------------------------===// - // Core attributes used by the Dwarf writer. - // - - // - /// O - Stream to .s file. - /// - raw_ostream &O; - - /// Asm - Target of Dwarf emission. - /// - AsmPrinter *Asm; - - /// TAI - Target asm information. - const TargetAsmInfo *TAI; - - /// TD - Target data. - const TargetData *TD; - - /// RI - Register Information. - const TargetRegisterInfo *RI; - - /// M - Current module. - /// - Module *M; - - /// MF - Current machine function. - /// - MachineFunction *MF; - - /// MMI - Collected machine module information. - /// - MachineModuleInfo *MMI; - - /// SubprogramCount - The running count of functions being compiled. - /// - unsigned SubprogramCount; - - /// Flavor - A unique string indicating what dwarf producer this is, used to - /// unique labels. - const char * const Flavor; - - unsigned SetCounter; - Dwarf(raw_ostream &OS, AsmPrinter *A, const TargetAsmInfo *T, - const char *flavor) - : O(OS) - , Asm(A) - , TAI(T) - , TD(Asm->TM.getTargetData()) - , RI(Asm->TM.getRegisterInfo()) - , M(NULL) - , MF(NULL) - , MMI(NULL) - , SubprogramCount(0) - , Flavor(flavor) - , SetCounter(1) - { - } - -public: - //===--------------------------------------------------------------------===// - // Accessors. - // - const AsmPrinter *getAsm() const { return Asm; } - MachineModuleInfo *getMMI() const { return MMI; } - const TargetAsmInfo *getTargetAsmInfo() const { return TAI; } - const TargetData *getTargetData() const { return TD; } - - void PrintRelDirective(bool Force32Bit = false, bool isInSection = false) - const { - if (isInSection && TAI->getDwarfSectionOffsetDirective()) - O << TAI->getDwarfSectionOffsetDirective(); - else if (Force32Bit || TD->getPointerSize() == sizeof(int32_t)) - O << TAI->getData32bitsDirective(); - else - O << TAI->getData64bitsDirective(); - } - - /// 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 { - O << TAI->getPrivateGlobalPrefix() << Tag; - if (Number) O << Number; - } - - void PrintLabelName(const char *Tag, unsigned Number, - const char *Suffix) const { - O << TAI->getPrivateGlobalPrefix() << Tag; - if (Number) O << Number; - O << Suffix; - } - - /// 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 { - PrintLabelName(Tag, Number); - O << ":\n"; - } - - /// EmitReference - Emit a reference to a label. - /// - void EmitReference(DWLabel Label, bool IsPCRelative = false, - bool Force32Bit = false) const { - EmitReference(Label.Tag, Label.Number, IsPCRelative, Force32Bit); - } - void EmitReference(const char *Tag, unsigned Number, - bool IsPCRelative = false, bool Force32Bit = false) const { - PrintRelDirective(Force32Bit); - PrintLabelName(Tag, Number); - - if (IsPCRelative) O << "-" << TAI->getPCSymbol(); - } - void EmitReference(const std::string &Name, bool IsPCRelative = false, - bool Force32Bit = false) const { - PrintRelDirective(Force32Bit); - - O << Name; - - if (IsPCRelative) O << "-" << TAI->getPCSymbol(); - } - - /// 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, - bool IsSmall = false) { - EmitDifference(LabelHi.Tag, LabelHi.Number, - LabelLo.Tag, LabelLo.Number, - IsSmall); - } - void EmitDifference(const char *TagHi, unsigned NumberHi, - const char *TagLo, unsigned NumberLo, - bool IsSmall = false) { - if (TAI->needsSet()) { - O << "\t.set\t"; - PrintLabelName("set", SetCounter, Flavor); - O << ","; - PrintLabelName(TagHi, NumberHi); - O << "-"; - PrintLabelName(TagLo, NumberLo); - O << "\n"; - - PrintRelDirective(IsSmall); - PrintLabelName("set", SetCounter, Flavor); - ++SetCounter; - } else { - PrintRelDirective(IsSmall); - - PrintLabelName(TagHi, NumberHi); - O << "-"; - PrintLabelName(TagLo, NumberLo); - } - } - - void EmitSectionOffset(const char* Label, const char* Section, - unsigned LabelNumber, unsigned SectionNumber, - bool IsSmall = false, bool isEH = false, - bool useSet = true) { - bool printAbsolute = false; - if (isEH) - printAbsolute = TAI->isAbsoluteEHSectionOffsets(); - else - printAbsolute = TAI->isAbsoluteDebugSectionOffsets(); - - if (TAI->needsSet() && useSet) { - O << "\t.set\t"; - PrintLabelName("set", SetCounter, Flavor); - O << ","; - PrintLabelName(Label, LabelNumber); - - if (!printAbsolute) { - O << "-"; - PrintLabelName(Section, SectionNumber); - } - O << "\n"; - - PrintRelDirective(IsSmall); - - PrintLabelName("set", SetCounter, Flavor); - ++SetCounter; - } else { - PrintRelDirective(IsSmall, true); - - PrintLabelName(Label, LabelNumber); - - if (!printAbsolute) { - O << "-"; - PrintLabelName(Section, SectionNumber); - } - } - } - - /// EmitFrameMoves - Emit frame instructions to describe the layout of the - /// frame. - void EmitFrameMoves(const char *BaseLabel, unsigned BaseLabelID, - const std::vector<MachineMove> &Moves, bool isEH) { - int stackGrowth = - Asm->TM.getFrameInfo()->getStackGrowthDirection() == - TargetFrameInfo::StackGrowsUp ? - TD->getPointerSize() : -TD->getPointerSize(); - bool IsLocal = BaseLabel && strcmp(BaseLabel, "label") == 0; - - for (unsigned i = 0, N = Moves.size(); i < N; ++i) { - const MachineMove &Move = Moves[i]; - unsigned LabelID = Move.getLabelID(); - - if (LabelID) { - LabelID = MMI->MappedLabel(LabelID); - - // Throw out move if the label is invalid. - if (!LabelID) continue; - } - - const MachineLocation &Dst = Move.getDestination(); - const MachineLocation &Src = Move.getSource(); - - // Advance row if new location. - if (BaseLabel && LabelID && (BaseLabelID != LabelID || !IsLocal)) { - Asm->EmitInt8(DW_CFA_advance_loc4); - Asm->EOL("DW_CFA_advance_loc4"); - EmitDifference("label", LabelID, BaseLabel, BaseLabelID, true); - Asm->EOL(); - - BaseLabelID = LabelID; - BaseLabel = "label"; - IsLocal = true; - } - - // If advancing cfa. - if (Dst.isReg() && Dst.getReg() == MachineLocation::VirtualFP) { - if (!Src.isReg()) { - if (Src.getReg() == MachineLocation::VirtualFP) { - Asm->EmitInt8(DW_CFA_def_cfa_offset); - Asm->EOL("DW_CFA_def_cfa_offset"); - } else { - Asm->EmitInt8(DW_CFA_def_cfa); - Asm->EOL("DW_CFA_def_cfa"); - Asm->EmitULEB128Bytes(RI->getDwarfRegNum(Src.getReg(), isEH)); - Asm->EOL("Register"); - } - - int Offset = -Src.getOffset(); - - Asm->EmitULEB128Bytes(Offset); - Asm->EOL("Offset"); - } else { - assert(0 && "Machine move no supported yet."); - } - } else if (Src.isReg() && - Src.getReg() == MachineLocation::VirtualFP) { - if (Dst.isReg()) { - Asm->EmitInt8(DW_CFA_def_cfa_register); - Asm->EOL("DW_CFA_def_cfa_register"); - Asm->EmitULEB128Bytes(RI->getDwarfRegNum(Dst.getReg(), isEH)); - Asm->EOL("Register"); - } else { - assert(0 && "Machine move no supported yet."); - } - } else { - unsigned Reg = RI->getDwarfRegNum(Src.getReg(), isEH); - int Offset = Dst.getOffset() / stackGrowth; - - if (Offset < 0) { - Asm->EmitInt8(DW_CFA_offset_extended_sf); - Asm->EOL("DW_CFA_offset_extended_sf"); - Asm->EmitULEB128Bytes(Reg); - Asm->EOL("Reg"); - Asm->EmitSLEB128Bytes(Offset); - Asm->EOL("Offset"); - } else if (Reg < 64) { - Asm->EmitInt8(DW_CFA_offset + Reg); - if (Asm->isVerbose()) - Asm->EOL("DW_CFA_offset + Reg (" + utostr(Reg) + ")"); - else - Asm->EOL(); - Asm->EmitULEB128Bytes(Offset); - Asm->EOL("Offset"); - } else { - Asm->EmitInt8(DW_CFA_offset_extended); - Asm->EOL("DW_CFA_offset_extended"); - Asm->EmitULEB128Bytes(Reg); - Asm->EOL("Reg"); - Asm->EmitULEB128Bytes(Offset); - Asm->EOL("Offset"); - } - } - } - } - -}; - -//===----------------------------------------------------------------------===// /// SrcLineInfo - This class is used to record source line correspondence. /// class SrcLineInfo { - unsigned Line; // Source line number. - unsigned Column; // Source column. - unsigned SourceID; // Source ID number. - unsigned LabelID; // Label in code ID number. + unsigned Line; // Source line number. + unsigned Column; // Source column. + unsigned SourceID; // Source ID number. + unsigned LabelID; // Label in code ID number. public: SrcLineInfo(unsigned L, unsigned C, unsigned S, unsigned I) : Line(L), Column(C), SourceID(S), LabelID(I) {} @@ -1100,7 +173,7 @@ public: /// DbgVariable - This class is used to track local variable information. /// class DbgVariable { - DIVariable Var; // Variable Descriptor. + DIVariable Var; // Variable Descriptor. unsigned FrameIndex; // Variable frame index. public: DbgVariable(DIVariable V, unsigned I) : Var(V), FrameIndex(I) {} @@ -1395,32 +468,32 @@ private: return DWLabel("string", StringID); } - /// NewDIEntry - Creates a new DIEntry to be a proxy for a debug information + /// NewDIEEntry - Creates a new DIEEntry to be a proxy for a debug information /// entry. - DIEntry *NewDIEntry(DIE *Entry = NULL) { - DIEntry *Value; + DIEEntry *NewDIEEntry(DIE *Entry = NULL) { + DIEEntry *Value; if (Entry) { FoldingSetNodeID ID; - DIEntry::Profile(ID, Entry); + DIEEntry::Profile(ID, Entry); void *Where; - Value = static_cast<DIEntry *>(ValuesSet.FindNodeOrInsertPos(ID, Where)); + Value = static_cast<DIEEntry *>(ValuesSet.FindNodeOrInsertPos(ID, Where)); if (Value) return Value; - Value = new DIEntry(Entry); + Value = new DIEEntry(Entry); ValuesSet.InsertNode(Value, Where); } else { - Value = new DIEntry(Entry); + Value = new DIEEntry(Entry); } Values.push_back(Value); return Value; } - /// SetDIEntry - Set a DIEntry once the debug information entry is defined. + /// SetDIEEntry - Set a DIEEntry once the debug information entry is defined. /// - void SetDIEntry(DIEntry *Value, DIE *Entry) { + void SetDIEEntry(DIEEntry *Value, DIE *Entry) { Value->setEntry(Entry); // Add to values set if not already there. If it is, we merely have a // duplicate in the values list (no harm.) @@ -1483,7 +556,7 @@ private: /// AddLabel - Add a Dwarf label attribute data and value. /// void AddLabel(DIE *Die, unsigned Attribute, unsigned Form, - const DWLabel &Label) { + const DWLabel &Label) { FoldingSetNodeID ID; DIEDwarfLabel::Profile(ID, Label); void *Where; @@ -1549,16 +622,16 @@ private: Die->AddValue(Attribute, Form, Value); } - /// AddDIEntry - Add a DIE attribute data and value. + /// AddDIEEntry - Add a DIE attribute data and value. /// - void AddDIEntry(DIE *Die, unsigned Attribute, unsigned Form, DIE *Entry) { - Die->AddValue(Attribute, Form, NewDIEntry(Entry)); + void AddDIEEntry(DIE *Die, unsigned Attribute, unsigned Form, DIE *Entry) { + Die->AddValue(Attribute, Form, NewDIEEntry(Entry)); } /// AddBlock - Add block data. /// void AddBlock(DIE *Die, unsigned Attribute, unsigned Form, DIEBlock *Block) { - Block->ComputeSize(*this); + Block->ComputeSize(TD); FoldingSetNodeID ID; Block->Profile(ID); void *Where; @@ -1649,7 +722,7 @@ private: return; // Check for pre-existence. - DIEntry *&Slot = DW_Unit->getDIEntrySlotFor(Ty.getGV()); + DIEEntry *&Slot = DW_Unit->getDIEEntrySlotFor(Ty.getGV()); // If it exists then use the existing value. if (Slot) { Entity->AddValue(DW_AT_type, DW_FORM_ref4, Slot); @@ -1657,7 +730,7 @@ private: } // Set up proxy. - Slot = NewDIEntry(); + Slot = NewDIEEntry(); // Construct type. DIE Buffer(DW_TAG_base_type); @@ -1680,10 +753,10 @@ private: DIE *Child = new DIE(Buffer); Die->AddChild(Child); Buffer.Detach(); - SetDIEntry(Slot, Child); + SetDIEEntry(Slot, Child); } else { Die = DW_Unit->AddDie(Buffer); - SetDIEntry(Slot, Die); + SetDIEEntry(Slot, Die); } Entity->AddValue(DW_AT_type, DW_FORM_ref4, Slot); @@ -1856,7 +929,7 @@ private: int64_t H = SR.getHi(); DIE *DW_Subrange = new DIE(DW_TAG_subrange_type); if (L != H) { - AddDIEntry(DW_Subrange, DW_AT_type, DW_FORM_ref4, IndexTy); + AddDIEEntry(DW_Subrange, DW_AT_type, DW_FORM_ref4, IndexTy); if (L) AddSInt(DW_Subrange, DW_AT_lower_bound, 0, L); AddSInt(DW_Subrange, DW_AT_upper_bound, 0, H); @@ -2363,7 +1436,7 @@ private: Asm->EmitInt32(Die->SiblingOffset()); break; case DW_AT_abstract_origin: { - DIEntry *E = cast<DIEntry>(Values[i]); + DIEEntry *E = cast<DIEEntry>(Values[i]); DIE *Origin = E->getEntry(); unsigned Addr = CompileUnitOffsets[Die->getAbstractCompileUnit()] + @@ -2374,7 +1447,7 @@ private: } default: // Emit an attribute using the defined form. - Values[i]->EmitValue(*this, Form); + Values[i]->EmitValue(this, Form); break; } @@ -2420,7 +1493,7 @@ private: // Size the DIE attribute values. for (unsigned i = 0, N = Values.size(); i < N; ++i) { // Size attribute value. - Offset += Values[i]->SizeOf(*this, AbbrevData[i].getForm()); + Offset += Values[i]->SizeOf(TD, AbbrevData[i].getForm()); } // Size the DIE children if any. @@ -2531,7 +1604,7 @@ private: Asm->EOL("Abbreviation Code"); // Emit the abbreviations data. - Abbrev->Emit(*this); + Abbrev->Emit(Asm); Asm->EOL(); } @@ -3646,7 +2719,7 @@ public: ScopeDie->setAbstractCompileUnit(Unit); DIE *Origin = Unit->getDieMapSlotFor(GV); - AddDIEntry(ScopeDie, DW_AT_abstract_origin, DW_FORM_ref4, Origin); + AddDIEEntry(ScopeDie, DW_AT_abstract_origin, DW_FORM_ref4, Origin); AddUInt(ScopeDie, DW_AT_call_file, 0, Unit->getID()); AddUInt(ScopeDie, DW_AT_call_line, 0, Line); AddUInt(ScopeDie, DW_AT_call_column, 0, Col); @@ -4506,319 +3579,6 @@ public: } // End of namespace llvm //===----------------------------------------------------------------------===// - -/// Emit - Print the abbreviation using the specified Dwarf writer. -/// -void DIEAbbrev::Emit(const DwarfDebug &DD) const { - // Emit its Dwarf tag type. - DD.getAsm()->EmitULEB128Bytes(Tag); - DD.getAsm()->EOL(TagString(Tag)); - - // Emit whether it has children DIEs. - DD.getAsm()->EmitULEB128Bytes(ChildrenFlag); - DD.getAsm()->EOL(ChildrenString(ChildrenFlag)); - - // For each attribute description. - for (unsigned i = 0, N = Data.size(); i < N; ++i) { - const DIEAbbrevData &AttrData = Data[i]; - - // Emit attribute type. - DD.getAsm()->EmitULEB128Bytes(AttrData.getAttribute()); - DD.getAsm()->EOL(AttributeString(AttrData.getAttribute())); - - // Emit form type. - DD.getAsm()->EmitULEB128Bytes(AttrData.getForm()); - DD.getAsm()->EOL(FormEncodingString(AttrData.getForm())); - } - - // Mark end of abbreviation. - DD.getAsm()->EmitULEB128Bytes(0); DD.getAsm()->EOL("EOM(1)"); - DD.getAsm()->EmitULEB128Bytes(0); DD.getAsm()->EOL("EOM(2)"); -} - -#ifndef NDEBUG -void DIEAbbrev::print(std::ostream &O) { - O << "Abbreviation @" - << std::hex << (intptr_t)this << std::dec - << " " - << TagString(Tag) - << " " - << ChildrenString(ChildrenFlag) - << "\n"; - - for (unsigned i = 0, N = Data.size(); i < N; ++i) { - O << " " - << AttributeString(Data[i].getAttribute()) - << " " - << FormEncodingString(Data[i].getForm()) - << "\n"; - } -} -void DIEAbbrev::dump() { print(cerr); } -#endif - -//===----------------------------------------------------------------------===// - -#ifndef NDEBUG -void DIEValue::dump() { - print(cerr); -} -#endif - -//===----------------------------------------------------------------------===// - -/// EmitValue - Emit integer of appropriate size. -/// -void DIEInteger::EmitValue(DwarfDebug &DD, unsigned Form) { - switch (Form) { - case DW_FORM_flag: // Fall thru - case DW_FORM_ref1: // Fall thru - case DW_FORM_data1: DD.getAsm()->EmitInt8(Integer); break; - case DW_FORM_ref2: // Fall thru - case DW_FORM_data2: DD.getAsm()->EmitInt16(Integer); break; - case DW_FORM_ref4: // Fall thru - case DW_FORM_data4: DD.getAsm()->EmitInt32(Integer); break; - case DW_FORM_ref8: // Fall thru - case DW_FORM_data8: DD.getAsm()->EmitInt64(Integer); break; - case DW_FORM_udata: DD.getAsm()->EmitULEB128Bytes(Integer); break; - case DW_FORM_sdata: DD.getAsm()->EmitSLEB128Bytes(Integer); break; - default: assert(0 && "DIE Value form not supported yet"); break; - } -} - -/// SizeOf - Determine size of integer value in bytes. -/// -unsigned DIEInteger::SizeOf(const DwarfDebug &DD, unsigned Form) const { - switch (Form) { - case DW_FORM_flag: // Fall thru - case DW_FORM_ref1: // Fall thru - case DW_FORM_data1: return sizeof(int8_t); - case DW_FORM_ref2: // Fall thru - case DW_FORM_data2: return sizeof(int16_t); - case DW_FORM_ref4: // Fall thru - case DW_FORM_data4: return sizeof(int32_t); - case DW_FORM_ref8: // Fall thru - case DW_FORM_data8: return sizeof(int64_t); - case DW_FORM_udata: return TargetAsmInfo::getULEB128Size(Integer); - case DW_FORM_sdata: return TargetAsmInfo::getSLEB128Size(Integer); - default: assert(0 && "DIE Value form not supported yet"); break; - } - return 0; -} - -//===----------------------------------------------------------------------===// - -/// EmitValue - Emit string value. -/// -void DIEString::EmitValue(DwarfDebug &DD, unsigned Form) { - DD.getAsm()->EmitString(Str); -} - -//===----------------------------------------------------------------------===// - -/// EmitValue - Emit label value. -/// -void DIEDwarfLabel::EmitValue(DwarfDebug &DD, unsigned Form) { - bool IsSmall = Form == DW_FORM_data4; - DD.EmitReference(Label, false, IsSmall); -} - -/// SizeOf - Determine size of label value in bytes. -/// -unsigned DIEDwarfLabel::SizeOf(const DwarfDebug &DD, unsigned Form) const { - if (Form == DW_FORM_data4) return 4; - return DD.getTargetData()->getPointerSize(); -} - -//===----------------------------------------------------------------------===// - -/// EmitValue - Emit label value. -/// -void DIEObjectLabel::EmitValue(DwarfDebug &DD, unsigned Form) { - bool IsSmall = Form == DW_FORM_data4; - DD.EmitReference(Label, false, IsSmall); -} - -/// SizeOf - Determine size of label value in bytes. -/// -unsigned DIEObjectLabel::SizeOf(const DwarfDebug &DD, unsigned Form) const { - if (Form == DW_FORM_data4) return 4; - return DD.getTargetData()->getPointerSize(); -} - -//===----------------------------------------------------------------------===// - -/// EmitValue - Emit delta value. -/// -void DIESectionOffset::EmitValue(DwarfDebug &DD, unsigned Form) { - bool IsSmall = Form == DW_FORM_data4; - DD.EmitSectionOffset(Label.Tag, Section.Tag, - Label.Number, Section.Number, IsSmall, IsEH, UseSet); -} - -/// SizeOf - Determine size of delta value in bytes. -/// -unsigned DIESectionOffset::SizeOf(const DwarfDebug &DD, unsigned Form) const { - if (Form == DW_FORM_data4) return 4; - return DD.getTargetData()->getPointerSize(); -} - -//===----------------------------------------------------------------------===// - -/// EmitValue - Emit delta value. -/// -void DIEDelta::EmitValue(DwarfDebug &DD, unsigned Form) { - bool IsSmall = Form == DW_FORM_data4; - DD.EmitDifference(LabelHi, LabelLo, IsSmall); -} - -/// SizeOf - Determine size of delta value in bytes. -/// -unsigned DIEDelta::SizeOf(const DwarfDebug &DD, unsigned Form) const { - if (Form == DW_FORM_data4) return 4; - return DD.getTargetData()->getPointerSize(); -} - -//===----------------------------------------------------------------------===// - -/// EmitValue - Emit debug information entry offset. -/// -void DIEntry::EmitValue(DwarfDebug &DD, unsigned Form) { - DD.getAsm()->EmitInt32(Entry->getOffset()); -} - -//===----------------------------------------------------------------------===// - -/// ComputeSize - calculate the size of the block. -/// -unsigned DIEBlock::ComputeSize(DwarfDebug &DD) { - if (!Size) { - const SmallVector<DIEAbbrevData, 8> &AbbrevData = Abbrev.getData(); - - for (unsigned i = 0, N = Values.size(); i < N; ++i) { - Size += Values[i]->SizeOf(DD, AbbrevData[i].getForm()); - } - } - return Size; -} - -/// EmitValue - Emit block data. -/// -void DIEBlock::EmitValue(DwarfDebug &DD, unsigned Form) { - switch (Form) { - case DW_FORM_block1: DD.getAsm()->EmitInt8(Size); break; - case DW_FORM_block2: DD.getAsm()->EmitInt16(Size); break; - case DW_FORM_block4: DD.getAsm()->EmitInt32(Size); break; - case DW_FORM_block: DD.getAsm()->EmitULEB128Bytes(Size); break; - default: assert(0 && "Improper form for block"); break; - } - - const SmallVector<DIEAbbrevData, 8> &AbbrevData = Abbrev.getData(); - - for (unsigned i = 0, N = Values.size(); i < N; ++i) { - DD.getAsm()->EOL(); - Values[i]->EmitValue(DD, AbbrevData[i].getForm()); - } -} - -/// SizeOf - Determine size of block data in bytes. -/// -unsigned DIEBlock::SizeOf(const DwarfDebug &DD, unsigned Form) const { - switch (Form) { - case DW_FORM_block1: return Size + sizeof(int8_t); - case DW_FORM_block2: return Size + sizeof(int16_t); - case DW_FORM_block4: return Size + sizeof(int32_t); - case DW_FORM_block: return Size + TargetAsmInfo::getULEB128Size(Size); - default: assert(0 && "Improper form for block"); break; - } - return 0; -} - -//===----------------------------------------------------------------------===// -/// DIE Implementation - -DIE::~DIE() { - for (unsigned i = 0, N = Children.size(); i < N; ++i) - delete Children[i]; -} - -/// AddSiblingOffset - Add a sibling offset field to the front of the DIE. -/// -void DIE::AddSiblingOffset() { - DIEInteger *DI = new DIEInteger(0); - Values.insert(Values.begin(), DI); - Abbrev.AddFirstAttribute(DW_AT_sibling, DW_FORM_ref4); -} - -/// Profile - Used to gather unique data for the value folding set. -/// -void DIE::Profile(FoldingSetNodeID &ID) { - Abbrev.Profile(ID); - - for (unsigned i = 0, N = Children.size(); i < N; ++i) - ID.AddPointer(Children[i]); - - for (unsigned j = 0, M = Values.size(); j < M; ++j) - ID.AddPointer(Values[j]); -} - -#ifndef NDEBUG -void DIE::print(std::ostream &O, unsigned IncIndent) { - static unsigned IndentCount = 0; - IndentCount += IncIndent; - const std::string Indent(IndentCount, ' '); - bool isBlock = Abbrev.getTag() == 0; - - if (!isBlock) { - O << Indent - << "Die: " - << "0x" << std::hex << (intptr_t)this << std::dec - << ", Offset: " << Offset - << ", Size: " << Size - << "\n"; - - O << Indent - << TagString(Abbrev.getTag()) - << " " - << ChildrenString(Abbrev.getChildrenFlag()); - } else { - O << "Size: " << Size; - } - O << "\n"; - - const SmallVector<DIEAbbrevData, 8> &Data = Abbrev.getData(); - - IndentCount += 2; - for (unsigned i = 0, N = Data.size(); i < N; ++i) { - O << Indent; - - if (!isBlock) - O << AttributeString(Data[i].getAttribute()); - else - O << "Blk[" << i << "]"; - - O << " " - << FormEncodingString(Data[i].getForm()) - << " "; - Values[i]->print(O); - O << "\n"; - } - IndentCount -= 2; - - for (unsigned j = 0, M = Children.size(); j < M; ++j) { - Children[j]->print(O, 4); - } - - if (!isBlock) O << "\n"; - IndentCount -= IncIndent; -} - -void DIE::dump() { - print(cerr); -} -#endif - -//===----------------------------------------------------------------------===// /// DwarfWriter Implementation /// |