// This file contains support for writing dwarf debug info into asm files.
//
//===----------------------------------------------------------------------===//
+
#define DEBUG_TYPE "dwarfdebug"
#include "DwarfDebug.h"
#include "llvm/Module.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineModuleInfo.h"
+#include "llvm/MC/MCAsmInfo.h"
#include "llvm/MC/MCSection.h"
#include "llvm/MC/MCStreamer.h"
-#include "llvm/MC/MCAsmInfo.h"
+#include "llvm/MC/MCSymbol.h"
#include "llvm/Target/Mangler.h"
#include "llvm/Target/TargetData.h"
#include "llvm/Target/TargetFrameInfo.h"
#include "llvm/Target/TargetLoweringObjectFile.h"
+#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetRegisterInfo.h"
+#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/ErrorHandling.h"
/// Die - Compile unit debug information entry.
///
- DIE *CUDie;
+ const OwningPtr<DIE> CUDie;
- /// IndexTyDie - An anonymous type for index type.
+ /// IndexTyDie - An anonymous type for index type. Owned by CUDie.
DIE *IndexTyDie;
/// GVToDieMap - Tracks the mapping of unit level debug informaton
public:
CompileUnit(unsigned I, DIE *D)
: ID(I), CUDie(D), IndexTyDie(0) {}
- ~CompileUnit() { delete CUDie; delete IndexTyDie; }
// Accessors.
unsigned getID() const { return ID; }
- DIE* getCUDie() const { return CUDie; }
+ DIE* getCUDie() const { return CUDie.get(); }
const StringMap<DIE*> &getGlobals() const { return Globals; }
const StringMap<DIE*> &getGlobalTypes() const { return GlobalTypes; }
/// addGlobal - Add a new global entity to the compile unit.
///
- void addGlobal(const std::string &Name, DIE *Die) { Globals[Name] = Die; }
+ void addGlobal(StringRef Name, DIE *Die) { Globals[Name] = Die; }
/// addGlobalType - Add a new global type to the compile unit.
///
- void addGlobalType(const std::string &Name, DIE *Die) {
+ void addGlobalType(StringRef Name, DIE *Die) {
GlobalTypes[Name] = Die;
}
class DbgVariable {
DIVariable Var; // Variable Descriptor.
unsigned FrameIndex; // Variable frame index.
- DbgVariable *AbstractVar; // Abstract variable for this variable.
+ const MachineInstr *DbgValueMInsn; // DBG_VALUE
+ // DbgValueLabel - DBG_VALUE is effective from this label.
+ MCSymbol *DbgValueLabel;
+ DbgVariable *const AbstractVar; // Abstract variable for this variable.
DIE *TheDIE;
public:
- DbgVariable(DIVariable V, unsigned I)
- : Var(V), FrameIndex(I), AbstractVar(0), TheDIE(0) {}
+ // AbsVar may be NULL.
+ DbgVariable(DIVariable V, unsigned I, DbgVariable *AbsVar)
+ : Var(V), FrameIndex(I), DbgValueMInsn(0),
+ DbgValueLabel(0), AbstractVar(AbsVar), TheDIE(0) {}
+ DbgVariable(DIVariable V, const MachineInstr *MI, DbgVariable *AbsVar)
+ : Var(V), FrameIndex(0), DbgValueMInsn(MI), DbgValueLabel(0),
+ AbstractVar(AbsVar), TheDIE(0)
+ {}
// Accessors.
DIVariable getVariable() const { return Var; }
unsigned getFrameIndex() const { return FrameIndex; }
- void setAbstractVariable(DbgVariable *V) { AbstractVar = V; }
+ const MachineInstr *getDbgValue() const { return DbgValueMInsn; }
+ MCSymbol *getDbgValueLabel() const { return DbgValueLabel; }
+ void setDbgValueLabel(MCSymbol *L) { DbgValueLabel = L; }
DbgVariable *getAbstractVariable() const { return AbstractVar; }
void setDIE(DIE *D) { TheDIE = D; }
DIE *getDIE() const { return TheDIE; }
// Location at which this scope is inlined.
AssertingVH<MDNode> InlinedAtLocation;
bool AbstractScope; // Abstract Scope
- unsigned StartLabelID; // Label ID of the beginning of scope.
- unsigned EndLabelID; // Label ID of the end of scope.
+ MCSymbol *StartLabel; // Label ID of the beginning of scope.
+ MCSymbol *EndLabel; // Label ID of the end of scope.
const MachineInstr *LastInsn; // Last instruction of this scope.
const MachineInstr *FirstInsn; // First instruction of this scope.
- SmallVector<DbgScope *, 4> Scopes; // Scopes defined in scope.
- SmallVector<DbgVariable *, 8> Variables;// Variables declared in scope.
+ // Scopes defined in scope. Contents not owned.
+ SmallVector<DbgScope *, 4> Scopes;
+ // Variables declared in scope. Contents owned.
+ SmallVector<DbgVariable *, 8> Variables;
// Private state for dump()
mutable unsigned IndentLevel;
public:
DbgScope(DbgScope *P, DIDescriptor D, MDNode *I = 0)
: Parent(P), Desc(D), InlinedAtLocation(I), AbstractScope(false),
- StartLabelID(0), EndLabelID(0),
+ StartLabel(0), EndLabel(0),
LastInsn(0), FirstInsn(0), IndentLevel(0) {}
virtual ~DbgScope();
DbgScope *getParent() const { return Parent; }
void setParent(DbgScope *P) { Parent = P; }
DIDescriptor getDesc() const { return Desc; }
- MDNode *getInlinedAt() const {
- return InlinedAtLocation;
- }
+ MDNode *getInlinedAt() const { return InlinedAtLocation; }
MDNode *getScopeNode() const { return Desc.getNode(); }
- unsigned getStartLabelID() const { return StartLabelID; }
- unsigned getEndLabelID() const { return EndLabelID; }
- SmallVector<DbgScope *, 4> &getScopes() { return Scopes; }
- SmallVector<DbgVariable *, 8> &getVariables() { return Variables; }
- void setStartLabelID(unsigned S) { StartLabelID = S; }
- void setEndLabelID(unsigned E) { EndLabelID = E; }
+ MCSymbol *getStartLabel() const { return StartLabel; }
+ MCSymbol *getEndLabel() const { return EndLabel; }
+ const SmallVector<DbgScope *, 4> &getScopes() { return Scopes; }
+ const SmallVector<DbgVariable *, 8> &getVariables() { return Variables; }
+ void setStartLabel(MCSymbol *S) { StartLabel = S; }
+ void setEndLabel(MCSymbol *E) { EndLabel = E; }
void setLastInsn(const MachineInstr *MI) { LastInsn = MI; }
const MachineInstr *getLastInsn() { return LastInsn; }
void setFirstInsn(const MachineInstr *MI) { FirstInsn = MI; }
void fixInstructionMarkers(DenseMap<const MachineInstr *,
unsigned> &MIIndexMap) {
- assert (getFirstInsn() && "First instruction is missing!");
+ assert(getFirstInsn() && "First instruction is missing!");
// Use the end of last child scope as end of this scope.
- SmallVector<DbgScope *, 4> &Scopes = getScopes();
+ const SmallVector<DbgScope *, 4> &Scopes = getScopes();
const MachineInstr *LastInsn = getFirstInsn();
unsigned LIndex = 0;
if (Scopes.empty()) {
- assert (getLastInsn() && "Inner most scope does not have last insn!");
+ assert(getLastInsn() && "Inner most scope does not have last insn!");
return;
}
- for (SmallVector<DbgScope *, 4>::iterator SI = Scopes.begin(),
+ for (SmallVector<DbgScope *, 4>::const_iterator SI = Scopes.begin(),
SE = Scopes.end(); SI != SE; ++SI) {
DbgScope *DS = *SI;
DS->fixInstructionMarkers(MIIndexMap);
void dump() const;
#endif
};
+
+} // end llvm namespace
#ifndef NDEBUG
void DbgScope::dump() const {
err.indent(IndentLevel);
MDNode *N = Desc.getNode();
N->dump();
- err << " [" << StartLabelID << ", " << EndLabelID << "]\n";
+ err << " [" << StartLabel << ", " << EndLabel << "]\n";
if (AbstractScope)
err << "Abstract Scope\n";
#endif
DbgScope::~DbgScope() {
- for (unsigned i = 0, N = Scopes.size(); i < N; ++i)
- delete Scopes[i];
for (unsigned j = 0, M = Variables.size(); j < M; ++j)
delete Variables[j];
}
-} // end llvm namespace
-
-DwarfDebug::DwarfDebug(raw_ostream &OS, AsmPrinter *A, const MCAsmInfo *T)
- : DwarfPrinter(OS, A, T, "dbg"), ModuleCU(0),
- AbbreviationsSet(InitAbbreviationsSetSize), Abbreviations(),
- DIEValues(), StringPool(),
- SectionSourceLines(), didInitial(false), shouldEmit(false),
+DwarfDebug::DwarfDebug(AsmPrinter *A)
+ : Asm(A), MMI(Asm->MMI), ModuleCU(0),
+ AbbreviationsSet(InitAbbreviationsSetSize),
CurrentFnDbgScope(0), DebugTimer(0) {
+ NextStringPoolNumber = 0;
+
+ DwarfFrameSectionSym = DwarfInfoSectionSym = DwarfAbbrevSectionSym = 0;
+ DwarfStrSectionSym = TextSectionSym = 0;
+
if (TimePassesIsEnabled)
DebugTimer = new Timer("Dwarf Debug Writer");
}
DwarfDebug::~DwarfDebug() {
- for (unsigned j = 0, M = DIEValues.size(); j < M; ++j)
- delete DIEValues[j];
+ for (unsigned j = 0, M = DIEBlocks.size(); j < M; ++j)
+ DIEBlocks[j]->~DIEBlock();
delete DebugTimer;
}
+MCSymbol *DwarfDebug::getStringPoolEntry(StringRef Str) {
+ std::pair<MCSymbol*, unsigned> &Entry = StringPool[Str];
+ if (Entry.first) return Entry.first;
+
+ Entry.second = NextStringPoolNumber++;
+ return Entry.first = Asm->GetTempSymbol("string", Entry.second);
+}
+
+
/// assignAbbrevNumber - Define a unique number for the abbreviation.
///
void DwarfDebug::assignAbbrevNumber(DIEAbbrev &Abbrev) {
/// createDIEEntry - Creates a new DIEEntry to be a proxy for a debug
/// information entry.
DIEEntry *DwarfDebug::createDIEEntry(DIE *Entry) {
- DIEEntry *Value = new DIEEntry(Entry);
- DIEValues.push_back(Value);
+ DIEEntry *Value = new (DIEValueAllocator) DIEEntry(Entry);
return Value;
}
void DwarfDebug::addUInt(DIE *Die, unsigned Attribute,
unsigned Form, uint64_t Integer) {
if (!Form) Form = DIEInteger::BestForm(false, Integer);
- DIEValue *Value = new DIEInteger(Integer);
- DIEValues.push_back(Value);
+ DIEValue *Value = new (DIEValueAllocator) DIEInteger(Integer);
Die->addValue(Attribute, Form, Value);
}
void DwarfDebug::addSInt(DIE *Die, unsigned Attribute,
unsigned Form, int64_t Integer) {
if (!Form) Form = DIEInteger::BestForm(true, Integer);
- DIEValue *Value = new DIEInteger(Integer);
- DIEValues.push_back(Value);
+ DIEValue *Value = new (DIEValueAllocator) DIEInteger(Integer);
Die->addValue(Attribute, Form, Value);
}
/// keeps string reference.
void DwarfDebug::addString(DIE *Die, unsigned Attribute, unsigned Form,
StringRef String) {
- DIEValue *Value = new DIEString(String);
- DIEValues.push_back(Value);
+ DIEValue *Value = new (DIEValueAllocator) DIEString(String);
Die->addValue(Attribute, Form, Value);
}
/// addLabel - Add a Dwarf label attribute data and value.
///
void DwarfDebug::addLabel(DIE *Die, unsigned Attribute, unsigned Form,
- const DWLabel &Label) {
- DIEValue *Value = new DIEDwarfLabel(Label);
- DIEValues.push_back(Value);
- Die->addValue(Attribute, Form, Value);
-}
-
-/// addObjectLabel - Add an non-Dwarf label attribute data and value.
-///
-void DwarfDebug::addObjectLabel(DIE *Die, unsigned Attribute, unsigned Form,
- const MCSymbol *Sym) {
- DIEValue *Value = new DIEObjectLabel(Sym);
- DIEValues.push_back(Value);
- Die->addValue(Attribute, Form, Value);
-}
-
-/// addSectionOffset - Add a section offset label attribute data and value.
-///
-void DwarfDebug::addSectionOffset(DIE *Die, unsigned Attribute, unsigned Form,
- const DWLabel &Label, const DWLabel &Section,
- bool isEH, bool useSet) {
- DIEValue *Value = new DIESectionOffset(Label, Section, isEH, useSet);
- DIEValues.push_back(Value);
+ const MCSymbol *Label) {
+ DIEValue *Value = new (DIEValueAllocator) DIELabel(Label);
Die->addValue(Attribute, Form, Value);
}
/// addDelta - Add a label delta attribute data and value.
///
void DwarfDebug::addDelta(DIE *Die, unsigned Attribute, unsigned Form,
- const DWLabel &Hi, const DWLabel &Lo) {
- DIEValue *Value = new DIEDelta(Hi, Lo);
- DIEValues.push_back(Value);
+ const MCSymbol *Hi, const MCSymbol *Lo) {
+ DIEValue *Value = new (DIEValueAllocator) DIEDelta(Hi, Lo);
Die->addValue(Attribute, Form, Value);
}
///
void DwarfDebug::addBlock(DIE *Die, unsigned Attribute, unsigned Form,
DIEBlock *Block) {
- Block->ComputeSize(TD);
- DIEValues.push_back(Block);
+ Block->ComputeSize(Asm);
+ DIEBlocks.push_back(Block); // Memoize so we can call the destructor later on.
Die->addValue(Attribute, Block->BestForm(), Block);
}
/// entry.
void DwarfDebug::addSourceLine(DIE *Die, const DIVariable *V) {
// If there is no compile unit specified, don't add a line #.
- if (V->getCompileUnit().isNull())
+ if (!V->getCompileUnit().Verify())
return;
unsigned Line = V->getLineNumber();
- unsigned FileID = findCompileUnit(V->getCompileUnit())->getID();
+ unsigned FileID = GetOrCreateSourceID(V->getContext().getDirectory(),
+ V->getContext().getFilename());
assert(FileID && "Invalid file id");
addUInt(Die, dwarf::DW_AT_decl_file, 0, FileID);
addUInt(Die, dwarf::DW_AT_decl_line, 0, Line);
/// entry.
void DwarfDebug::addSourceLine(DIE *Die, const DIGlobal *G) {
// If there is no compile unit specified, don't add a line #.
- if (G->getCompileUnit().isNull())
+ if (!G->getCompileUnit().Verify())
return;
unsigned Line = G->getLineNumber();
- unsigned FileID = findCompileUnit(G->getCompileUnit())->getID();
+ unsigned FileID = GetOrCreateSourceID(G->getContext().getDirectory(),
+ G->getContext().getFilename());
assert(FileID && "Invalid file id");
addUInt(Die, dwarf::DW_AT_decl_file, 0, FileID);
addUInt(Die, dwarf::DW_AT_decl_line, 0, Line);
/// entry.
void DwarfDebug::addSourceLine(DIE *Die, const DISubprogram *SP) {
// If there is no compile unit specified, don't add a line #.
- if (SP->getCompileUnit().isNull())
+ if (!SP->getCompileUnit().Verify())
return;
// If the line number is 0, don't add it.
if (SP->getLineNumber() == 0)
return;
-
unsigned Line = SP->getLineNumber();
- unsigned FileID = findCompileUnit(SP->getCompileUnit())->getID();
+ if (!SP->getContext().Verify())
+ return;
+ unsigned FileID = GetOrCreateSourceID(SP->getDirectory(),
+ SP->getFilename());
assert(FileID && "Invalid file id");
addUInt(Die, dwarf::DW_AT_decl_file, 0, FileID);
addUInt(Die, dwarf::DW_AT_decl_line, 0, Line);
void DwarfDebug::addSourceLine(DIE *Die, const DIType *Ty) {
// If there is no compile unit specified, don't add a line #.
DICompileUnit CU = Ty->getCompileUnit();
- if (CU.isNull())
+ if (!CU.Verify())
return;
unsigned Line = Ty->getLineNumber();
- unsigned FileID = findCompileUnit(CU)->getID();
+ if (!Ty->getContext().Verify())
+ return;
+ unsigned FileID = GetOrCreateSourceID(Ty->getContext().getDirectory(),
+ Ty->getContext().getFilename());
assert(FileID && "Invalid file id");
addUInt(Die, dwarf::DW_AT_decl_file, 0, FileID);
addUInt(Die, dwarf::DW_AT_decl_line, 0, Line);
/// entry.
void DwarfDebug::addSourceLine(DIE *Die, const DINameSpace *NS) {
// If there is no compile unit specified, don't add a line #.
- if (NS->getCompileUnit().isNull())
+ if (!NS->getCompileUnit().Verify())
return;
unsigned Line = NS->getLineNumber();
}
DICompositeType blockStruct = DICompositeType(subType.getNode());
-
DIArray Elements = blockStruct.getTypeArray();
- if (Elements.isNull())
- return Ty;
-
for (unsigned i = 0, N = Elements.getNumElements(); i < N; ++i) {
DIDescriptor Element = Elements.getElement(i);
DIDerivedType DT = DIDerivedType(Element.getNode());
// Decode the original location, and use that as the start of the byref
// variable's location.
+ const TargetRegisterInfo *RI = Asm->TM.getRegisterInfo();
unsigned Reg = RI->getDwarfRegNum(Location.getReg(), false);
- DIEBlock *Block = new DIEBlock();
+ DIEBlock *Block = new (DIEValueAllocator) DIEBlock();
if (Location.isReg()) {
if (Reg < 32) {
DIDescriptor varField = DIDescriptor();
DIDescriptor forwardingField = DIDescriptor();
-
for (unsigned i = 0, N = Fields.getNumElements(); i < N; ++i) {
DIDescriptor Element = Fields.getElement(i);
DIDerivedType DT = DIDerivedType(Element.getNode());
varField = Element;
}
- assert(!varField.isNull() && "Can't find byref variable in Block struct");
- assert(!forwardingField.isNull()
- && "Can't find forwarding field in Block struct");
-
// Get the offsets for the forwarding field and the variable field.
- unsigned int forwardingFieldOffset =
+ unsigned forwardingFieldOffset =
DIDerivedType(forwardingField.getNode()).getOffsetInBits() >> 3;
- unsigned int varFieldOffset =
+ unsigned varFieldOffset =
DIDerivedType(varField.getNode()).getOffsetInBits() >> 3;
// Decode the original location, and use that as the start of the byref
// variable's location.
+ const TargetRegisterInfo *RI = Asm->TM.getRegisterInfo();
unsigned Reg = RI->getDwarfRegNum(Location.getReg(), false);
- DIEBlock *Block = new DIEBlock();
+ DIEBlock *Block = new (DIEValueAllocator) DIEBlock();
if (Location.isReg()) {
if (Reg < 32)
/// provided.
void DwarfDebug::addAddress(DIE *Die, unsigned Attribute,
const MachineLocation &Location) {
+ const TargetRegisterInfo *RI = Asm->TM.getRegisterInfo();
unsigned Reg = RI->getDwarfRegNum(Location.getReg(), false);
- DIEBlock *Block = new DIEBlock();
+ DIEBlock *Block = new (DIEValueAllocator) DIEBlock();
if (Location.isReg()) {
if (Reg < 32) {
/// addToContextOwner - Add Die into the list of its context owner's children.
void DwarfDebug::addToContextOwner(DIE *Die, DIDescriptor Context) {
- if (Context.isNull())
- ModuleCU->addDie(Die);
- else if (Context.isType()) {
+ if (Context.isType()) {
DIE *ContextDIE = getOrCreateTypeDIE(DIType(Context.getNode()));
ContextDIE->addChild(Die);
} else if (Context.isNameSpace()) {
/// addType - Add a new type attribute to the specified entity.
void DwarfDebug::addType(DIE *Entity, DIType Ty) {
- if (Ty.isNull())
+ if (!Ty.isValid())
return;
// Check for pre-existence.
return;
}
- // Set up proxy.
- Entry = createDIEEntry();
- ModuleCU->insertDIEEntry(Ty.getNode(), Entry);
-
// Construct type.
DIE *Buffer = getOrCreateTypeDIE(Ty);
- Entry->setEntry(Buffer);
+ // Set up proxy.
+ Entry = createDIEEntry(Buffer);
+ ModuleCU->insertDIEEntry(Ty.getNode(), Entry);
+
Entity->addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, Entry);
}
// Add enumerators to enumeration type.
for (unsigned i = 0, N = Elements.getNumElements(); i < N; ++i) {
DIE *ElemDie = NULL;
- DIEnumerator Enum(Elements.getElement(i).getNode());
- if (!Enum.isNull()) {
- ElemDie = constructEnumTypeDIE(&Enum);
+ DIDescriptor Enum(Elements.getElement(i).getNode());
+ if (Enum.isEnumerator()) {
+ ElemDie = constructEnumTypeDIE(DIEnumerator(Enum.getNode()));
Buffer.addChild(ElemDie);
}
}
DIArray Elements = CTy.getTypeArray();
// A forward struct declared type may not have elements available.
- if (Elements.isNull())
+ unsigned N = Elements.getNumElements();
+ if (N == 0)
break;
// Add elements to structure type.
- for (unsigned i = 0, N = Elements.getNumElements(); i < N; ++i) {
+ for (unsigned i = 0; i < N; ++i) {
DIDescriptor Element = Elements.getElement(i);
- if (Element.isNull())
- continue;
DIE *ElemDie = NULL;
- if (Element.getTag() == dwarf::DW_TAG_subprogram)
+ if (Element.isSubprogram())
ElemDie = createSubprogramDIE(DISubprogram(Element.getNode()));
- else if (Element.getTag() == dwarf::DW_TAG_auto_variable) {
+ else if (Element.isVariable()) {
DIVariable DV(Element.getNode());
ElemDie = new DIE(dwarf::DW_TAG_variable);
addString(ElemDie, dwarf::DW_AT_name, dwarf::DW_FORM_string,
addUInt(ElemDie, dwarf::DW_AT_declaration, dwarf::DW_FORM_flag, 1);
addUInt(ElemDie, dwarf::DW_AT_external, dwarf::DW_FORM_flag, 1);
addSourceLine(ElemDie, &DV);
- } else
+ } else if (Element.isDerivedType())
ElemDie = createMemberDIE(DIDerivedType(Element.getNode()));
+ else
+ continue;
Buffer.addChild(ElemDie);
}
dwarf::DW_FORM_data1, RLang);
DICompositeType ContainingType = CTy.getContainingType();
- if (!ContainingType.isNull())
+ if (DIDescriptor(ContainingType.getNode()).isCompositeType())
addDIEEntry(&Buffer, dwarf::DW_AT_containing_type, dwarf::DW_FORM_ref4,
getOrCreateTypeDIE(DIType(ContainingType.getNode())));
break;
}
/// constructEnumTypeDIE - Construct enum type DIE from DIEnumerator.
-DIE *DwarfDebug::constructEnumTypeDIE(DIEnumerator *ETy) {
+DIE *DwarfDebug::constructEnumTypeDIE(DIEnumerator ETy) {
DIE *Enumerator = new DIE(dwarf::DW_TAG_enumerator);
- StringRef Name = ETy->getName();
+ StringRef Name = ETy.getName();
addString(Enumerator, dwarf::DW_AT_name, dwarf::DW_FORM_string, Name);
- int64_t Value = ETy->getEnumValue();
+ int64_t Value = ETy.getEnumValue();
addSInt(Enumerator, dwarf::DW_AT_const_value, dwarf::DW_FORM_sdata, Value);
return Enumerator;
}
addSourceLine(MemberDie, &DT);
- DIEBlock *MemLocationDie = new DIEBlock();
+ DIEBlock *MemLocationDie = new (DIEValueAllocator) DIEBlock();
addUInt(MemLocationDie, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_plus_uconst);
uint64_t Size = DT.getSizeInBits();
Offset -= FieldOffset;
// Maybe we need to work from the other end.
- if (TD->isLittleEndian()) Offset = FieldSize - (Offset + Size);
+ if (Asm->getTargetData().isLittleEndian())
+ Offset = FieldSize - (Offset + Size);
addUInt(MemberDie, dwarf::DW_AT_bit_offset, 0, Offset);
// Here WD_AT_data_member_location points to the anonymous
// expression to extract appropriate offset from vtable.
// BaseAddr = ObAddr + *((*ObAddr) - Offset)
- DIEBlock *VBaseLocationDie = new DIEBlock();
+ DIEBlock *VBaseLocationDie = new (DIEValueAllocator) DIEBlock();
addUInt(VBaseLocationDie, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_dup);
addUInt(VBaseLocationDie, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_deref);
addUInt(VBaseLocationDie, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_constu);
DIArray Args = SPTy.getTypeArray();
unsigned SPTag = SPTy.getTag();
- if (Args.isNull() || SPTag != dwarf::DW_TAG_subroutine_type)
+ if (Args.getNumElements() == 0 || SPTag != dwarf::DW_TAG_subroutine_type)
addType(SPDie, SPTy);
else
addType(SPDie, DIType(Args.getElement(0).getNode()));
unsigned VK = SP.getVirtuality();
if (VK) {
addUInt(SPDie, dwarf::DW_AT_virtuality, dwarf::DW_FORM_flag, VK);
- DIEBlock *Block = new DIEBlock();
+ DIEBlock *Block = new (DIEValueAllocator) DIEBlock();
addUInt(Block, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_constu);
addUInt(Block, 0, dwarf::DW_FORM_data1, SP.getVirtualIndex());
addBlock(SPDie, dwarf::DW_AT_vtable_elem_location, 0, Block);
return SPDie;
}
-/// findCompileUnit - Get the compile unit for the given descriptor.
-///
-CompileUnit *DwarfDebug::findCompileUnit(DICompileUnit Unit) {
- DenseMap<Value *, CompileUnit *>::const_iterator I =
- CompileUnitMap.find(Unit.getNode());
- if (I == CompileUnitMap.end())
- return constructCompileUnit(Unit.getNode());
- return I->second;
-}
-
-/// getUpdatedDbgScope - Find or create DbgScope assicated with the instruction.
-/// Initialize scope and update scope hierarchy.
+/// getUpdatedDbgScope - Find DbgScope assicated with the instruction.
+/// Update scope hierarchy. Create abstract scope if required.
DbgScope *DwarfDebug::getUpdatedDbgScope(MDNode *N, const MachineInstr *MI,
- MDNode *InlinedAt) {
- assert (N && "Invalid Scope encoding!");
- assert (MI && "Missing machine instruction!");
- bool GetConcreteScope = (MI && InlinedAt);
+ MDNode *InlinedAt) {
+ assert(N && "Invalid Scope encoding!");
+ assert(MI && "Missing machine instruction!");
+ bool isAConcreteScope = InlinedAt != 0;
DbgScope *NScope = NULL;
NScope = DbgScopeMap.lookup(InlinedAt);
else
NScope = DbgScopeMap.lookup(N);
- assert (NScope && "Unable to find working scope!");
+ assert(NScope && "Unable to find working scope!");
if (NScope->getFirstInsn())
return NScope;
DbgScope *Parent = NULL;
- if (GetConcreteScope) {
+ if (isAConcreteScope) {
DILocation IL(InlinedAt);
Parent = getUpdatedDbgScope(IL.getScope().getNode(), MI,
IL.getOrigLocation().getNode());
- assert (Parent && "Unable to find Parent scope!");
+ assert(Parent && "Unable to find Parent scope!");
NScope->setParent(Parent);
Parent->addScope(NScope);
} else if (DIDescriptor(N).isLexicalBlock()) {
DILexicalBlock DB(N);
- if (!DB.getContext().isNull()) {
- Parent = getUpdatedDbgScope(DB.getContext().getNode(), MI, InlinedAt);
- NScope->setParent(Parent);
- Parent->addScope(NScope);
- }
+ Parent = getUpdatedDbgScope(DB.getContext().getNode(), MI, InlinedAt);
+ NScope->setParent(Parent);
+ Parent->addScope(NScope);
}
NScope->setFirstInsn(MI);
if (!Parent && !InlinedAt) {
StringRef SPName = DISubprogram(N).getLinkageName();
- if (SPName == MF->getFunction()->getName())
+ if (SPName == Asm->MF->getFunction()->getName())
CurrentFnDbgScope = NScope;
}
- if (GetConcreteScope) {
+ if (isAConcreteScope) {
ConcreteScopes[InlinedAt] = NScope;
getOrCreateAbstractScope(N);
}
}
DbgScope *DwarfDebug::getOrCreateAbstractScope(MDNode *N) {
- assert (N && "Invalid Scope encoding!");
+ assert(N && "Invalid Scope encoding!");
DbgScope *AScope = AbstractScopes.lookup(N);
if (AScope)
if (Scope.isLexicalBlock()) {
DILexicalBlock DB(N);
DIDescriptor ParentDesc = DB.getContext();
- if (!ParentDesc.isNull())
- Parent = getOrCreateAbstractScope(ParentDesc.getNode());
+ Parent = getOrCreateAbstractScope(ParentDesc.getNode());
}
AScope = new DbgScope(Parent, DIDescriptor(N), NULL);
/// If there are global variables in this scope then create and insert
/// DIEs for these variables.
DIE *DwarfDebug::updateSubprogramScopeDIE(MDNode *SPNode) {
-
- DIE *SPDie = ModuleCU->getDIE(SPNode);
- assert (SPDie && "Unable to find subprogram DIE!");
- DISubprogram SP(SPNode);
- // There is not any need to generate specification DIE for a function
- // defined at compile unit level. If a function is defined inside another
- // function then gdb prefers the definition at top level and but does not
- // expect specification DIE in parent function. So avoid creating
- // specification DIE for a function defined inside a function.
- if (SP.isDefinition() && !SP.getContext().isCompileUnit()
- && !SP.getContext().isSubprogram()) {
- addUInt(SPDie, dwarf::DW_AT_declaration, dwarf::DW_FORM_flag, 1);
- // Add arguments.
- DICompositeType SPTy = SP.getType();
- DIArray Args = SPTy.getTypeArray();
- unsigned SPTag = SPTy.getTag();
- if (SPTag == dwarf::DW_TAG_subroutine_type)
- for (unsigned i = 1, N = Args.getNumElements(); i < N; ++i) {
- DIE *Arg = new DIE(dwarf::DW_TAG_formal_parameter);
- DIType ATy = DIType(DIType(Args.getElement(i).getNode()));
- addType(Arg, ATy);
- if (ATy.isArtificial())
- addUInt(Arg, dwarf::DW_AT_artificial, dwarf::DW_FORM_flag, 1);
- SPDie->addChild(Arg);
- }
- DIE *SPDeclDie = SPDie;
- SPDie = new DIE(dwarf::DW_TAG_subprogram);
- addDIEEntry(SPDie, dwarf::DW_AT_specification, dwarf::DW_FORM_ref4,
- SPDeclDie);
- ModuleCU->addDie(SPDie);
- }
-
- addLabel(SPDie, dwarf::DW_AT_low_pc, dwarf::DW_FORM_addr,
- DWLabel("func_begin", SubprogramCount));
- addLabel(SPDie, dwarf::DW_AT_high_pc, dwarf::DW_FORM_addr,
- DWLabel("func_end", SubprogramCount));
- MachineLocation Location(RI->getFrameRegister(*MF));
- addAddress(SPDie, dwarf::DW_AT_frame_base, Location);
-
- if (!DISubprogram(SPNode).isLocalToUnit())
- addUInt(SPDie, dwarf::DW_AT_external, dwarf::DW_FORM_flag, 1);
-
- return SPDie;
+ DIE *SPDie = ModuleCU->getDIE(SPNode);
+ assert(SPDie && "Unable to find subprogram DIE!");
+ DISubprogram SP(SPNode);
+
+ // There is not any need to generate specification DIE for a function
+ // defined at compile unit level. If a function is defined inside another
+ // function then gdb prefers the definition at top level and but does not
+ // expect specification DIE in parent function. So avoid creating
+ // specification DIE for a function defined inside a function.
+ if (SP.isDefinition() && !SP.getContext().isCompileUnit() &&
+ !SP.getContext().isFile() && !SP.getContext().isSubprogram()) {
+ addUInt(SPDie, dwarf::DW_AT_declaration, dwarf::DW_FORM_flag, 1);
+
+ // Add arguments.
+ DICompositeType SPTy = SP.getType();
+ DIArray Args = SPTy.getTypeArray();
+ unsigned SPTag = SPTy.getTag();
+ if (SPTag == dwarf::DW_TAG_subroutine_type)
+ for (unsigned i = 1, N = Args.getNumElements(); i < N; ++i) {
+ DIE *Arg = new DIE(dwarf::DW_TAG_formal_parameter);
+ DIType ATy = DIType(DIType(Args.getElement(i).getNode()));
+ addType(Arg, ATy);
+ if (ATy.isArtificial())
+ addUInt(Arg, dwarf::DW_AT_artificial, dwarf::DW_FORM_flag, 1);
+ SPDie->addChild(Arg);
+ }
+ DIE *SPDeclDie = SPDie;
+ SPDie = new DIE(dwarf::DW_TAG_subprogram);
+ addDIEEntry(SPDie, dwarf::DW_AT_specification, dwarf::DW_FORM_ref4,
+ SPDeclDie);
+ ModuleCU->addDie(SPDie);
+ }
+
+ addLabel(SPDie, dwarf::DW_AT_low_pc, dwarf::DW_FORM_addr,
+ Asm->GetTempSymbol("func_begin", Asm->getFunctionNumber()));
+ addLabel(SPDie, dwarf::DW_AT_high_pc, dwarf::DW_FORM_addr,
+ Asm->GetTempSymbol("func_end", Asm->getFunctionNumber()));
+ const TargetRegisterInfo *RI = Asm->TM.getRegisterInfo();
+ MachineLocation Location(RI->getFrameRegister(*Asm->MF));
+ addAddress(SPDie, dwarf::DW_AT_frame_base, Location);
+
+ if (!DISubprogram(SPNode).isLocalToUnit())
+ addUInt(SPDie, dwarf::DW_AT_external, dwarf::DW_FORM_flag, 1);
+
+ return SPDie;
}
/// constructLexicalScope - Construct new DW_TAG_lexical_block
/// for this scope and attach DW_AT_low_pc/DW_AT_high_pc labels.
DIE *DwarfDebug::constructLexicalScopeDIE(DbgScope *Scope) {
- unsigned StartID = MMI->MappedLabel(Scope->getStartLabelID());
- unsigned EndID = MMI->MappedLabel(Scope->getEndLabelID());
-
- // Ignore empty scopes.
- if (StartID == EndID && StartID != 0)
- return NULL;
+ MCSymbol *Start = Scope->getStartLabel();
+ MCSymbol *End = Scope->getEndLabel();
+ if (Start == 0 || End == 0) return 0;
+ assert(Start->isDefined() && "Invalid starting label for an inlined scope!");
+ assert(End->isDefined() && "Invalid end label for an inlined scope!");
+
DIE *ScopeDIE = new DIE(dwarf::DW_TAG_lexical_block);
if (Scope->isAbstractScope())
return ScopeDIE;
addLabel(ScopeDIE, dwarf::DW_AT_low_pc, dwarf::DW_FORM_addr,
- StartID ?
- DWLabel("label", StartID)
- : DWLabel("func_begin", SubprogramCount));
+ Start ? Start : Asm->GetTempSymbol("func_begin",
+ Asm->getFunctionNumber()));
addLabel(ScopeDIE, dwarf::DW_AT_high_pc, dwarf::DW_FORM_addr,
- EndID ?
- DWLabel("label", EndID)
- : DWLabel("func_end", SubprogramCount));
-
-
+ End ? End : Asm->GetTempSymbol("func_end",Asm->getFunctionNumber()));
return ScopeDIE;
}
/// a function. Construct DIE to represent this concrete inlined copy
/// of the function.
DIE *DwarfDebug::constructInlinedScopeDIE(DbgScope *Scope) {
- unsigned StartID = MMI->MappedLabel(Scope->getStartLabelID());
- unsigned EndID = MMI->MappedLabel(Scope->getEndLabelID());
- assert (StartID && "Invalid starting label for an inlined scope!");
- assert (EndID && "Invalid end label for an inlined scope!");
- // Ignore empty scopes.
- if (StartID == EndID && StartID != 0)
+ MCSymbol *StartLabel = Scope->getStartLabel();
+ MCSymbol *EndLabel = Scope->getEndLabel();
+ if (StartLabel == 0 || EndLabel == 0) return 0;
+
+ assert(StartLabel->isDefined() &&
+ "Invalid starting label for an inlined scope!");
+ assert(EndLabel->isDefined() &&
+ "Invalid end label for an inlined scope!");
+ if (!Scope->getScopeNode())
return NULL;
-
DIScope DS(Scope->getScopeNode());
- if (DS.isNull())
- return NULL;
DIE *ScopeDIE = new DIE(dwarf::DW_TAG_inlined_subroutine);
DISubprogram InlinedSP = getDISubprogram(DS.getNode());
DIE *OriginDIE = ModuleCU->getDIE(InlinedSP.getNode());
- assert (OriginDIE && "Unable to find Origin DIE!");
+ assert(OriginDIE && "Unable to find Origin DIE!");
addDIEEntry(ScopeDIE, dwarf::DW_AT_abstract_origin,
dwarf::DW_FORM_ref4, OriginDIE);
- addLabel(ScopeDIE, dwarf::DW_AT_low_pc, dwarf::DW_FORM_addr,
- DWLabel("label", StartID));
- addLabel(ScopeDIE, dwarf::DW_AT_high_pc, dwarf::DW_FORM_addr,
- DWLabel("label", EndID));
+ addLabel(ScopeDIE, dwarf::DW_AT_low_pc, dwarf::DW_FORM_addr, StartLabel);
+ addLabel(ScopeDIE, dwarf::DW_AT_high_pc, dwarf::DW_FORM_addr, EndLabel);
InlinedSubprogramDIEs.insert(OriginDIE);
I = InlineInfo.find(InlinedSP.getNode());
if (I == InlineInfo.end()) {
- InlineInfo[InlinedSP.getNode()].push_back(std::make_pair(StartID,
+ InlineInfo[InlinedSP.getNode()].push_back(std::make_pair(StartLabel,
ScopeDIE));
InlinedSPNodes.push_back(InlinedSP.getNode());
} else
- I->second.push_back(std::make_pair(StartID, ScopeDIE));
-
- StringPool.insert(InlinedSP.getName());
- StringPool.insert(getRealLinkageName(InlinedSP.getLinkageName()));
+ I->second.push_back(std::make_pair(StartLabel, ScopeDIE));
DILocation DL(Scope->getInlinedAt());
addUInt(ScopeDIE, dwarf::DW_AT_call_file, 0, ModuleCU->getID());
DISubprogram InlinedSP = getDISubprogram(DS.getNode());
DIE *OriginSPDIE = ModuleCU->getDIE(InlinedSP.getNode());
(void) OriginSPDIE;
- assert (OriginSPDIE && "Unable to find Origin DIE for the SP!");
+ assert(OriginSPDIE && "Unable to find Origin DIE for the SP!");
DIE *AbsDIE = DV->getAbstractVariable()->getDIE();
- assert (AbsDIE && "Unable to find Origin DIE for the Variable!");
+ assert(AbsDIE && "Unable to find Origin DIE for the Variable!");
addDIEEntry(VariableDie, dwarf::DW_AT_abstract_origin,
dwarf::DW_FORM_ref4, AbsDIE);
}
// Add variable address.
if (!Scope->isAbstractScope()) {
- MachineLocation Location;
- unsigned FrameReg;
- int Offset = RI->getFrameIndexReference(*MF, DV->getFrameIndex(), FrameReg);
- Location.set(FrameReg, Offset);
-
- if (VD.hasComplexAddress())
- addComplexAddress(DV, VariableDie, dwarf::DW_AT_location, Location);
- else if (VD.isBlockByrefVariable())
- addBlockByrefAddress(DV, VariableDie, dwarf::DW_AT_location, Location);
- else
- addAddress(VariableDie, dwarf::DW_AT_location, Location);
+ // Check if variable is described by DBG_VALUE instruction.
+ if (const MachineInstr *DbgValueInsn = DV->getDbgValue()) {
+ if (DbgValueInsn->getNumOperands() == 3) {
+ // FIXME : Handle getNumOperands != 3
+ if (DbgValueInsn->getOperand(0).getType()
+ == MachineOperand::MO_Register
+ && DbgValueInsn->getOperand(0).getReg()) {
+ MachineLocation Location;
+ Location.set(DbgValueInsn->getOperand(0).getReg());
+ addAddress(VariableDie, dwarf::DW_AT_location, Location);
+ if (MCSymbol *VS = DV->getDbgValueLabel())
+ addLabel(VariableDie, dwarf::DW_AT_start_scope, dwarf::DW_FORM_addr,
+ VS);
+ } else if (DbgValueInsn->getOperand(0).getType() ==
+ MachineOperand::MO_Immediate) {
+ DIEBlock *Block = new (DIEValueAllocator) DIEBlock();
+ unsigned Imm = DbgValueInsn->getOperand(0).getImm();
+ addUInt(Block, 0, dwarf::DW_FORM_udata, Imm);
+ addBlock(VariableDie, dwarf::DW_AT_const_value, 0, Block);
+ if (MCSymbol *VS = DV->getDbgValueLabel())
+ addLabel(VariableDie, dwarf::DW_AT_start_scope, dwarf::DW_FORM_addr,
+ VS);
+ } else {
+ //FIXME : Handle other operand types.
+ delete VariableDie;
+ return NULL;
+ }
+ }
+ } else {
+ MachineLocation Location;
+ unsigned FrameReg;
+ const TargetRegisterInfo *RI = Asm->TM.getRegisterInfo();
+ int Offset = RI->getFrameIndexReference(*Asm->MF, DV->getFrameIndex(),
+ FrameReg);
+ Location.set(FrameReg, Offset);
+
+ if (VD.hasComplexAddress())
+ addComplexAddress(DV, VariableDie, dwarf::DW_AT_location, Location);
+ else if (VD.isBlockByrefVariable())
+ addBlockByrefAddress(DV, VariableDie, dwarf::DW_AT_location, Location);
+ else
+ addAddress(VariableDie, dwarf::DW_AT_location, Location);
+ }
}
if (Tag == dwarf::DW_TAG_formal_parameter && VD.getType().isArtificial())
return;
DIArray Args = SPTy.getTypeArray();
- if (Args.isNull())
- return;
-
for (unsigned i = 0, e = Args.getNumElements(); i != e; ++i) {
DIType ATy(Args.getElement(i).getNode());
- if (ATy.isNull())
+ if (!ATy.isValid())
continue;
DICompositeType CATy = getDICompositeType(ATy);
- if (!CATy.isNull() && !CATy.getName().empty()) {
+ if (DIDescriptor(CATy.getNode()).Verify() && !CATy.getName().empty()) {
if (DIEEntry *Entry = ModuleCU->getDIEEntry(CATy.getNode()))
ModuleCU->addGlobalType(CATy.getName(), Entry->getEntry());
}
/// constructScopeDIE - Construct a DIE for this scope.
DIE *DwarfDebug::constructScopeDIE(DbgScope *Scope) {
- if (!Scope)
- return NULL;
- DIScope DS(Scope->getScopeNode());
- if (DS.isNull())
- return NULL;
-
- DIE *ScopeDIE = NULL;
- if (Scope->getInlinedAt())
- ScopeDIE = constructInlinedScopeDIE(Scope);
- else if (DS.isSubprogram()) {
- if (Scope->isAbstractScope())
- ScopeDIE = ModuleCU->getDIE(DS.getNode());
- else
- ScopeDIE = updateSubprogramScopeDIE(DS.getNode());
- }
- else {
- ScopeDIE = constructLexicalScopeDIE(Scope);
- if (!ScopeDIE) return NULL;
- }
-
+ if (!Scope || !Scope->getScopeNode())
+ return NULL;
+
+ DIScope DS(Scope->getScopeNode());
+ DIE *ScopeDIE = NULL;
+ if (Scope->getInlinedAt())
+ ScopeDIE = constructInlinedScopeDIE(Scope);
+ else if (DS.isSubprogram()) {
+ if (Scope->isAbstractScope())
+ ScopeDIE = ModuleCU->getDIE(DS.getNode());
+ else
+ ScopeDIE = updateSubprogramScopeDIE(DS.getNode());
+ }
+ else
+ ScopeDIE = constructLexicalScopeDIE(Scope);
+ if (!ScopeDIE) return NULL;
+
// Add variables to scope.
- SmallVector<DbgVariable *, 8> &Variables = Scope->getVariables();
+ const SmallVector<DbgVariable *, 8> &Variables = Scope->getVariables();
for (unsigned i = 0, N = Variables.size(); i < N; ++i) {
DIE *VariableDIE = constructVariableDIE(Variables[i], Scope);
if (VariableDIE)
}
// Add nested scopes.
- SmallVector<DbgScope *, 4> &Scopes = Scope->getScopes();
+ const SmallVector<DbgScope *, 4> &Scopes = Scope->getScopes();
for (unsigned j = 0, M = Scopes.size(); j < M; ++j) {
// Define the Scope debug information entry.
DIE *NestedDIE = constructScopeDIE(Scopes[j]);
/// source file names. If none currently exists, create a new id and insert it
/// in the SourceIds map. This can update DirectoryNames and SourceFileNames
/// maps as well.
-unsigned DwarfDebug::GetOrCreateSourceID(StringRef DirName, StringRef FileName) {
+unsigned DwarfDebug::GetOrCreateSourceID(StringRef DirName, StringRef FileName){
unsigned DId;
StringMap<unsigned>::iterator DI = DirectoryIdMap.find(DirName);
if (DI != DirectoryIdMap.end()) {
return NDie;
}
-CompileUnit *DwarfDebug::constructCompileUnit(MDNode *N) {
+void DwarfDebug::constructCompileUnit(MDNode *N) {
DICompileUnit DIUnit(N);
+ // Use first compile unit marked as isMain as the compile unit for this
+ // module.
+ if (ModuleCU || !DIUnit.isMain())
+ return;
StringRef FN = DIUnit.getFilename();
StringRef Dir = DIUnit.getDirectory();
unsigned ID = GetOrCreateSourceID(Dir, FN);
DIE *Die = new DIE(dwarf::DW_TAG_compile_unit);
- addSectionOffset(Die, dwarf::DW_AT_stmt_list, dwarf::DW_FORM_data4,
- DWLabel("section_line", 0), DWLabel("section_line", 0),
- false);
addString(Die, dwarf::DW_AT_producer, dwarf::DW_FORM_string,
DIUnit.getProducer());
addUInt(Die, dwarf::DW_AT_language, dwarf::DW_FORM_data1,
DIUnit.getLanguage());
addString(Die, dwarf::DW_AT_name, dwarf::DW_FORM_string, FN);
+ addLabel(Die, dwarf::DW_AT_low_pc, dwarf::DW_FORM_addr, TextSectionSym);
+ addLabel(Die, dwarf::DW_AT_high_pc, dwarf::DW_FORM_addr,
+ Asm->GetTempSymbol("text_end"));
+ // DW_AT_stmt_list is a offset of line number information for this
+ // compile unit in debug_line section. It is always zero when only one
+ // compile unit is emitted in one object file.
+ addUInt(Die, dwarf::DW_AT_stmt_list, dwarf::DW_FORM_data4, 0);
if (!Dir.empty())
addString(Die, dwarf::DW_AT_comp_dir, dwarf::DW_FORM_string, Dir);
addUInt(Die, dwarf::DW_AT_APPLE_major_runtime_vers,
dwarf::DW_FORM_data1, RVer);
- CompileUnit *Unit = new CompileUnit(ID, Die);
- if (!ModuleCU && DIUnit.isMain()) {
- // Use first compile unit marked as isMain as the compile unit
- // for this module.
- ModuleCU = Unit;
- }
-
- CompileUnitMap[DIUnit.getNode()] = Unit;
- CompileUnits.push_back(Unit);
- return Unit;
+ assert(!ModuleCU &&
+ "ModuleCU assigned since the top of constructCompileUnit");
+ ModuleCU = new CompileUnit(ID, Die);
}
void DwarfDebug::constructGlobalVariableDIE(MDNode *N) {
DIDescriptor GVContext = DI_GV.getContext();
// Do not create specification DIE if context is either compile unit
// or a subprogram.
- if (DI_GV.isDefinition() && !GVContext.isCompileUnit()
- && !GVContext.isSubprogram()) {
+ if (DI_GV.isDefinition() && !GVContext.isCompileUnit() &&
+ !GVContext.isFile() && !GVContext.isSubprogram()) {
// Create specification DIE.
DIE *VariableSpecDIE = new DIE(dwarf::DW_TAG_variable);
addDIEEntry(VariableSpecDIE, dwarf::DW_AT_specification,
dwarf::DW_FORM_ref4, VariableDie);
- DIEBlock *Block = new DIEBlock();
+ DIEBlock *Block = new (DIEValueAllocator) DIEBlock();
addUInt(Block, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_addr);
- addObjectLabel(Block, 0, dwarf::DW_FORM_udata,
- Asm->GetGlobalValueSymbol(DI_GV.getGlobal()));
+ addLabel(Block, 0, dwarf::DW_FORM_udata,
+ Asm->Mang->getSymbol(DI_GV.getGlobal()));
addBlock(VariableSpecDIE, dwarf::DW_AT_location, 0, Block);
addUInt(VariableDie, dwarf::DW_AT_declaration, dwarf::DW_FORM_flag, 1);
ModuleCU->addDie(VariableSpecDIE);
} else {
- DIEBlock *Block = new DIEBlock();
+ DIEBlock *Block = new (DIEValueAllocator) DIEBlock();
addUInt(Block, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_addr);
- addObjectLabel(Block, 0, dwarf::DW_FORM_udata,
- Asm->GetGlobalValueSymbol(DI_GV.getGlobal()));
+ addLabel(Block, 0, dwarf::DW_FORM_udata,
+ Asm->Mang->getSymbol(DI_GV.getGlobal()));
addBlock(VariableDie, dwarf::DW_AT_location, 0, Block);
}
addToContextOwner(VariableDie, GVContext);
DIType GTy = DI_GV.getType();
if (GTy.isCompositeType() && !GTy.getName().empty()) {
DIEEntry *Entry = ModuleCU->getDIEEntry(GTy.getNode());
- assert (Entry && "Missing global type!");
+ assert(Entry && "Missing global type!");
ModuleCU->addGlobalType(GTy.getName(), Entry->getEntry());
}
return;
/// beginModule - Emit all Dwarf sections that should come prior to the
/// content. Create global DIEs and emit initial debug info sections.
/// This is inovked by the target AsmPrinter.
-void DwarfDebug::beginModule(Module *M, MachineModuleInfo *mmi) {
- this->M = M;
-
- if (TimePassesIsEnabled)
- DebugTimer->startTimer();
-
- if (!MAI->doesSupportDebugInformation())
+void DwarfDebug::beginModule(Module *M) {
+ if (!Asm->MAI->doesSupportDebugInformation())
return;
+
+ MMI = Asm->MMI;
+
+ TimeRegion Timer(DebugTimer);
DebugInfoFinder DbgFinder;
DbgFinder.processModule(*M);
+ bool HasDebugInfo = false;
+
+ // Scan all the compile-units to see if there are any marked as the main unit.
+ // if not, we do not generate debug info.
+ for (DebugInfoFinder::iterator I = DbgFinder.compile_unit_begin(),
+ E = DbgFinder.compile_unit_end(); I != E; ++I) {
+ if (DICompileUnit(*I).isMain()) {
+ HasDebugInfo = true;
+ break;
+ }
+ }
+
+ if (!HasDebugInfo) return;
+
+ // Tell MMI that we have debug info.
+ MMI->setDebugInfoAvailability(true);
+
+ // Emit initial sections.
+ EmitSectionLabels();
+
// Create all the compile unit DIEs.
for (DebugInfoFinder::iterator I = DbgFinder.compile_unit_begin(),
E = DbgFinder.compile_unit_end(); I != E; ++I)
constructCompileUnit(*I);
- if (CompileUnits.empty()) {
- if (TimePassesIsEnabled)
- DebugTimer->stopTimer();
-
- return;
- }
-
- // If main compile unit for this module is not seen than randomly
- // select first compile unit.
- if (!ModuleCU)
- ModuleCU = CompileUnits[0];
-
// Create DIEs for each subprogram.
for (DebugInfoFinder::iterator I = DbgFinder.subprogram_begin(),
E = DbgFinder.subprogram_end(); I != E; ++I)
E = DbgFinder.global_variable_end(); I != E; ++I)
constructGlobalVariableDIE(*I);
- MMI = mmi;
- shouldEmit = true;
- MMI->setDebugInfoAvailability(true);
-
// Prime section data.
SectionMap.insert(Asm->getObjFileLowering().getTextSection());
// Print out .file directives to specify files for .loc directives. These are
// printed out early so that they precede any .loc directives.
- if (MAI->hasDotLocAndDotFile()) {
+ if (Asm->MAI->hasDotLocAndDotFile()) {
for (unsigned i = 1, e = getNumSourceIds()+1; i != e; ++i) {
// Remember source id starts at 1.
std::pair<unsigned, unsigned> Id = getSourceDirectoryAndFileIds(i);
Asm->OutStreamer.EmitDwarfFileDirective(i, FullPath.str());
}
}
-
- // Emit initial sections
- emitInitial();
-
- if (TimePassesIsEnabled)
- DebugTimer->stopTimer();
}
/// endModule - Emit all Dwarf sections that should come after the content.
if (!ModuleCU)
return;
- if (TimePassesIsEnabled)
- DebugTimer->startTimer();
+ TimeRegion Timer(DebugTimer);
// Attach DW_AT_inline attribute with inlined subprogram DIEs.
for (SmallPtrSet<DIE *, 4>::iterator AI = InlinedSubprogramDIEs.begin(),
if (!NDie) continue;
addDIEEntry(SPDie, dwarf::DW_AT_containing_type, dwarf::DW_FORM_ref4, NDie);
// FIXME - This is not the correct approach.
- // addDIEEntry(NDie, dwarf::DW_AT_containing_type, dwarf::DW_FORM_ref4, NDie);
+ //addDIEEntry(NDie, dwarf::DW_AT_containing_type, dwarf::DW_FORM_ref4, NDie
}
// Standard sections final addresses.
Asm->OutStreamer.SwitchSection(Asm->getObjFileLowering().getTextSection());
- EmitLabel("text_end", 0);
+ Asm->OutStreamer.EmitLabel(Asm->GetTempSymbol("text_end"));
Asm->OutStreamer.SwitchSection(Asm->getObjFileLowering().getDataSection());
- EmitLabel("data_end", 0);
+ Asm->OutStreamer.EmitLabel(Asm->GetTempSymbol("data_end"));
// End text sections.
for (unsigned i = 1, N = SectionMap.size(); i <= N; ++i) {
Asm->OutStreamer.SwitchSection(SectionMap[i]);
- EmitLabel("section_end", i);
+ Asm->OutStreamer.EmitLabel(Asm->GetTempSymbol("section_end", i));
}
// Emit common frame information.
// Emit info into a debug pubtypes section.
emitDebugPubTypes();
- // Emit info into a debug str section.
- emitDebugStr();
-
// Emit info into a debug loc section.
emitDebugLoc();
// Emit inline info.
emitDebugInlineInfo();
- if (TimePassesIsEnabled)
- DebugTimer->stopTimer();
+ // Emit info into a debug str section.
+ emitDebugStr();
+
+ delete ModuleCU;
+ ModuleCU = NULL; // Reset for the next Module, if any.
}
/// findAbstractVariable - Find abstract variable, if any, associated with Var.
DbgVariable *DwarfDebug::findAbstractVariable(DIVariable &Var,
unsigned FrameIdx,
- DILocation &ScopeLoc) {
+ DebugLoc ScopeLoc) {
DbgVariable *AbsDbgVariable = AbstractVariables.lookup(Var.getNode());
if (AbsDbgVariable)
return AbsDbgVariable;
- DbgScope *Scope = AbstractScopes.lookup(ScopeLoc.getScope().getNode());
+ LLVMContext &Ctx = Var.getNode()->getContext();
+ DbgScope *Scope = AbstractScopes.lookup(ScopeLoc.getScope(Ctx));
if (!Scope)
return NULL;
- AbsDbgVariable = new DbgVariable(Var, FrameIdx);
+ AbsDbgVariable = new DbgVariable(Var, FrameIdx,
+ NULL /* No more-abstract variable*/);
Scope->addVariable(AbsDbgVariable);
AbstractVariables[Var.getNode()] = AbsDbgVariable;
return AbsDbgVariable;
}
+/// findAbstractVariable - Find abstract variable, if any, associated with Var.
+/// FIXME : Refactor findAbstractVariable.
+DbgVariable *DwarfDebug::findAbstractVariable(DIVariable &Var,
+ const MachineInstr *MI,
+ DebugLoc ScopeLoc) {
+
+ DbgVariable *AbsDbgVariable = AbstractVariables.lookup(Var.getNode());
+ if (AbsDbgVariable)
+ return AbsDbgVariable;
+
+ LLVMContext &Ctx = Var.getNode()->getContext();
+ DbgScope *Scope = AbstractScopes.lookup(ScopeLoc.getScope(Ctx));
+ if (!Scope)
+ return NULL;
+
+ AbsDbgVariable = new DbgVariable(Var, MI,
+ NULL /* No more-abstract variable*/);
+ Scope->addVariable(AbsDbgVariable);
+ AbstractVariables[Var.getNode()] = AbsDbgVariable;
+ DbgValueStartMap[MI] = AbsDbgVariable;
+ return AbsDbgVariable;
+}
+
/// collectVariableInfo - Populate DbgScope entries with variables' info.
void DwarfDebug::collectVariableInfo() {
if (!MMI) return;
+ const LLVMContext &Ctx = Asm->MF->getFunction()->getContext();
+
MachineModuleInfo::VariableDbgInfoMapTy &VMap = MMI->getVariableDbgInfo();
for (MachineModuleInfo::VariableDbgInfoMapTy::iterator VI = VMap.begin(),
VE = VMap.end(); VI != VE; ++VI) {
MDNode *Var = VI->first;
if (!Var) continue;
- DIVariable DV (Var);
- std::pair< unsigned, MDNode *> VP = VI->second;
- DILocation ScopeLoc(VP.second);
-
- DbgScope *Scope =
- ConcreteScopes.lookup(ScopeLoc.getOrigLocation().getNode());
- if (!Scope)
- Scope = DbgScopeMap.lookup(ScopeLoc.getScope().getNode());
+ DIVariable DV(Var);
+ const std::pair<unsigned, DebugLoc> &VP = VI->second;
+
+ DbgScope *Scope = 0;
+ if (MDNode *IA = VP.second.getInlinedAt(Ctx))
+ Scope = ConcreteScopes.lookup(IA);
+ if (Scope == 0)
+ Scope = DbgScopeMap.lookup(VP.second.getScope(Ctx));
+
// If variable scope is not found then skip this variable.
- if (!Scope)
+ if (Scope == 0)
continue;
- DbgVariable *RegVar = new DbgVariable(DV, VP.first);
+ DbgVariable *AbsDbgVariable = findAbstractVariable(DV, VP.first, VP.second);
+ DbgVariable *RegVar = new DbgVariable(DV, VP.first, AbsDbgVariable);
Scope->addVariable(RegVar);
- if (DbgVariable *AbsDbgVariable = findAbstractVariable(DV, VP.first,
- ScopeLoc))
- RegVar->setAbstractVariable(AbsDbgVariable);
+ }
+
+ // Collect variable information from DBG_VALUE machine instructions;
+ for (MachineFunction::const_iterator I = Asm->MF->begin(), E = Asm->MF->end();
+ I != E; ++I) {
+ for (MachineBasicBlock::const_iterator II = I->begin(), IE = I->end();
+ II != IE; ++II) {
+ const MachineInstr *MInsn = II;
+ if (!MInsn->isDebugValue())
+ continue;
+
+ // FIXME : Lift this restriction.
+ if (MInsn->getNumOperands() != 3)
+ continue;
+ DIVariable DV((MDNode*)(MInsn->getOperand(MInsn->getNumOperands()
+ - 1).getMetadata()));
+ if (DV.getTag() == dwarf::DW_TAG_arg_variable) {
+ // FIXME Handle inlined subroutine arguments.
+ DbgVariable *ArgVar = new DbgVariable(DV, MInsn, NULL);
+ CurrentFnDbgScope->addVariable(ArgVar);
+ DbgValueStartMap[MInsn] = ArgVar;
+ continue;
+ }
+
+ DebugLoc DL = MInsn->getDebugLoc();
+ if (DL.isUnknown()) continue;
+ DbgScope *Scope = 0;
+ if (MDNode *IA = DL.getInlinedAt(Ctx))
+ Scope = ConcreteScopes.lookup(IA);
+ if (Scope == 0)
+ Scope = DbgScopeMap.lookup(DL.getScope(Ctx));
+
+ // If variable scope is not found then skip this variable.
+ if (Scope == 0)
+ continue;
+
+ DbgVariable *AbsDbgVariable = findAbstractVariable(DV, MInsn, DL);
+ DbgVariable *RegVar = new DbgVariable(DV, MInsn, AbsDbgVariable);
+ DbgValueStartMap[MInsn] = RegVar;
+ Scope->addVariable(RegVar);
+ }
}
}
-/// beginScope - Process beginning of a scope starting at Label.
-void DwarfDebug::beginScope(const MachineInstr *MI, unsigned Label) {
+/// beginScope - Process beginning of a scope.
+void DwarfDebug::beginScope(const MachineInstr *MI) {
+ // Check location.
+ DebugLoc DL = MI->getDebugLoc();
+ if (DL.isUnknown())
+ return;
+
+ // Check and update last known location info.
+ if (DL == PrevInstLoc)
+ return;
+
+ MDNode *Scope = DL.getScope(Asm->MF->getFunction()->getContext());
+
+ // FIXME: Should only verify each scope once!
+ if (!DIScope(Scope).Verify())
+ return;
+
+ // DBG_VALUE instruction establishes new value.
+ if (MI->isDebugValue()) {
+ DenseMap<const MachineInstr *, DbgVariable *>::iterator DI
+ = DbgValueStartMap.find(MI);
+ if (DI != DbgValueStartMap.end()) {
+ MCSymbol *Label = recordSourceLine(DL.getLine(), DL.getCol(), Scope);
+ PrevInstLoc = DL;
+ DI->second->setDbgValueLabel(Label);
+ }
+ return;
+ }
+
+ // Emit a label to indicate location change. This is used for line
+ // table even if this instruction does start a new scope.
+ MCSymbol *Label = recordSourceLine(DL.getLine(), DL.getCol(), Scope);
+ PrevInstLoc = DL;
+
+ // update DbgScope if this instruction starts a new scope.
InsnToDbgScopeMapTy::iterator I = DbgScopeBeginMap.find(MI);
if (I == DbgScopeBeginMap.end())
return;
+
ScopeVector &SD = I->second;
for (ScopeVector::iterator SDI = SD.begin(), SDE = SD.end();
SDI != SDE; ++SDI)
- (*SDI)->setStartLabelID(Label);
+ (*SDI)->setStartLabel(Label);
}
/// endScope - Process end of a scope.
void DwarfDebug::endScope(const MachineInstr *MI) {
+ // Ignore DBG_VALUE instruction.
+ if (MI->isDebugValue())
+ return;
+
+ // Check location.
+ DebugLoc DL = MI->getDebugLoc();
+ if (DL.isUnknown())
+ return;
+
+ // Emit a label and update DbgScope if this instruction ends a scope.
InsnToDbgScopeMapTy::iterator I = DbgScopeEndMap.find(MI);
if (I == DbgScopeEndMap.end())
return;
+
+ MCSymbol *Label = MMI->getContext().CreateTempSymbol();
+ Asm->OutStreamer.EmitLabel(Label);
- unsigned Label = MMI->NextLabelID();
- Asm->printLabel(Label);
- O << '\n';
-
- SmallVector<DbgScope *, 2> &SD = I->second;
+ SmallVector<DbgScope*, 2> &SD = I->second;
for (SmallVector<DbgScope *, 2>::iterator SDI = SD.begin(), SDE = SD.end();
SDI != SDE; ++SDI)
- (*SDI)->setEndLabelID(Label);
+ (*SDI)->setEndLabel(Label);
return;
}
/// createDbgScope - Create DbgScope for the scope.
void DwarfDebug::createDbgScope(MDNode *Scope, MDNode *InlinedAt) {
-
if (!InlinedAt) {
DbgScope *WScope = DbgScopeMap.lookup(Scope);
if (WScope)
}
/// extractScopeInformation - Scan machine instructions in this function
-/// and collect DbgScopes. Return true, if atleast one scope was found.
+/// and collect DbgScopes. Return true, if at least one scope was found.
bool DwarfDebug::extractScopeInformation() {
// If scope information was extracted using .dbg intrinsics then there is not
// any need to extract these information by scanning each instruction.
DenseMap<const MachineInstr *, unsigned> MIIndexMap;
unsigned MIIndex = 0;
+ LLVMContext &Ctx = Asm->MF->getFunction()->getContext();
+
// Scan each instruction and create scopes. First build working set of scopes.
- for (MachineFunction::const_iterator I = MF->begin(), E = MF->end();
+ for (MachineFunction::const_iterator I = Asm->MF->begin(), E = Asm->MF->end();
I != E; ++I) {
for (MachineBasicBlock::const_iterator II = I->begin(), IE = I->end();
II != IE; ++II) {
const MachineInstr *MInsn = II;
+ // FIXME : Remove DBG_VALUE check.
+ if (MInsn->isDebugValue()) continue;
MIIndexMap[MInsn] = MIIndex++;
+
DebugLoc DL = MInsn->getDebugLoc();
if (DL.isUnknown()) continue;
- DILocation DLT = MF->getDILocation(DL);
- DIScope DLTScope = DLT.getScope();
- if (DLTScope.isNull()) continue;
+
+ MDNode *Scope = DL.getScope(Ctx);
+
// There is no need to create another DIE for compile unit. For all
// other scopes, create one DbgScope now. This will be translated
// into a scope DIE at the end.
- if (DLTScope.isCompileUnit()) continue;
- createDbgScope(DLTScope.getNode(), DLT.getOrigLocation().getNode());
+ if (DIScope(Scope).isCompileUnit()) continue;
+ createDbgScope(Scope, DL.getInlinedAt(Ctx));
}
}
// Build scope hierarchy using working set of scopes.
- for (MachineFunction::const_iterator I = MF->begin(), E = MF->end();
+ for (MachineFunction::const_iterator I = Asm->MF->begin(), E = Asm->MF->end();
I != E; ++I) {
for (MachineBasicBlock::const_iterator II = I->begin(), IE = I->end();
II != IE; ++II) {
const MachineInstr *MInsn = II;
+ // FIXME : Remove DBG_VALUE check.
+ if (MInsn->isDebugValue()) continue;
DebugLoc DL = MInsn->getDebugLoc();
- if (DL.isUnknown()) continue;
- DILocation DLT = MF->getDILocation(DL);
- DIScope DLTScope = DLT.getScope();
- if (DLTScope.isNull()) continue;
+ if (DL.isUnknown()) continue;
+
+ MDNode *Scope = DL.getScope(Ctx);
+ if (Scope == 0) continue;
+
// There is no need to create another DIE for compile unit. For all
// other scopes, create one DbgScope now. This will be translated
// into a scope DIE at the end.
- if (DLTScope.isCompileUnit()) continue;
- DbgScope *Scope = getUpdatedDbgScope(DLTScope.getNode(), MInsn,
- DLT.getOrigLocation().getNode());
- Scope->setLastInsn(MInsn);
+ if (DIScope(Scope).isCompileUnit()) continue;
+ DbgScope *DScope = getUpdatedDbgScope(Scope, MInsn, DL.getInlinedAt(Ctx));
+ DScope->setLastInsn(MInsn);
}
}
SmallVector<DbgScope *, 4> WorkList;
WorkList.push_back(CurrentFnDbgScope);
while (!WorkList.empty()) {
- DbgScope *S = WorkList.back(); WorkList.pop_back();
+ DbgScope *S = WorkList.pop_back_val();
- SmallVector<DbgScope *, 4> &Children = S->getScopes();
+ const SmallVector<DbgScope *, 4> &Children = S->getScopes();
if (!Children.empty())
- for (SmallVector<DbgScope *, 4>::iterator SI = Children.begin(),
+ for (SmallVector<DbgScope *, 4>::const_iterator SI = Children.begin(),
SE = Children.end(); SI != SE; ++SI)
WorkList.push_back(*SI);
if (S->isAbstractScope())
continue;
const MachineInstr *MI = S->getFirstInsn();
- assert (MI && "DbgScope does not have first instruction!");
+ assert(MI && "DbgScope does not have first instruction!");
InsnToDbgScopeMapTy::iterator IDI = DbgScopeBeginMap.find(MI);
if (IDI != DbgScopeBeginMap.end())
DbgScopeBeginMap[MI].push_back(S);
MI = S->getLastInsn();
- assert (MI && "DbgScope does not have last instruction!");
+ assert(MI && "DbgScope does not have last instruction!");
IDI = DbgScopeEndMap.find(MI);
if (IDI != DbgScopeEndMap.end())
IDI->second.push_back(S);
/// beginFunction - Gather pre-function debug information. Assumes being
/// emitted immediately after the function entry point.
void DwarfDebug::beginFunction(const MachineFunction *MF) {
- this->MF = MF;
-
- if (!ShouldEmitDwarfDebug()) return;
-
- if (TimePassesIsEnabled)
- DebugTimer->startTimer();
-
+ if (!MMI->hasDebugInfo()) return;
+
+ TimeRegion Timer(DebugTimer);
if (!extractScopeInformation())
return;
-
+
collectVariableInfo();
// Assumes in correct section after the entry point.
- EmitLabel("func_begin", ++SubprogramCount);
+ Asm->OutStreamer.EmitLabel(Asm->GetTempSymbol("func_begin",
+ Asm->getFunctionNumber()));
// Emit label for the implicitly defined dbg.stoppoint at the start of the
// function.
DebugLoc FDL = MF->getDefaultDebugLoc();
- if (!FDL.isUnknown()) {
- DILocation DLT = MF->getDILocation(FDL);
- unsigned LabelID = 0;
- DISubprogram SP = getDISubprogram(DLT.getScope().getNode());
- if (!SP.isNull())
- LabelID = recordSourceLine(SP.getLineNumber(), 0,
- DLT.getScope().getNode());
- else
- LabelID = recordSourceLine(DLT.getLineNumber(),
- DLT.getColumnNumber(),
- DLT.getScope().getNode());
- Asm->printLabel(LabelID);
- O << '\n';
+ if (FDL.isUnknown()) return;
+
+ MDNode *Scope = FDL.getScope(MF->getFunction()->getContext());
+
+ DISubprogram SP = getDISubprogram(Scope);
+ unsigned Line, Col;
+ if (SP.Verify()) {
+ Line = SP.getLineNumber();
+ Col = 0;
+ } else {
+ Line = FDL.getLine();
+ Col = FDL.getCol();
}
- if (TimePassesIsEnabled)
- DebugTimer->stopTimer();
+
+ recordSourceLine(Line, Col, Scope);
}
/// endFunction - Gather and emit post-function debug information.
///
void DwarfDebug::endFunction(const MachineFunction *MF) {
- if (!ShouldEmitDwarfDebug()) return;
-
- if (TimePassesIsEnabled)
- DebugTimer->startTimer();
-
- if (DbgScopeMap.empty())
- return;
+ if (!MMI->hasDebugInfo()) return;
+ if (DbgScopeMap.empty()) return;
+
+ TimeRegion Timer(DebugTimer);
if (CurrentFnDbgScope) {
// Define end label for subprogram.
- EmitLabel("func_end", SubprogramCount);
+ Asm->OutStreamer.EmitLabel(Asm->GetTempSymbol("func_end",
+ Asm->getFunctionNumber()));
// Get function line info.
if (!Lines.empty()) {
constructScopeDIE(CurrentFnDbgScope);
- DebugFrames.push_back(FunctionDebugFrameInfo(SubprogramCount,
+ DebugFrames.push_back(FunctionDebugFrameInfo(Asm->getFunctionNumber(),
MMI->getFrameMoves()));
}
// Clear debug info
CurrentFnDbgScope = NULL;
- DbgScopeMap.clear();
+ DeleteContainerSeconds(DbgScopeMap);
DbgScopeBeginMap.clear();
DbgScopeEndMap.clear();
+ DbgValueStartMap.clear();
ConcreteScopes.clear();
+ DeleteContainerSeconds(AbstractScopes);
AbstractScopesList.clear();
+ AbstractVariables.clear();
Lines.clear();
-
- if (TimePassesIsEnabled)
- DebugTimer->stopTimer();
}
-/// recordSourceLine - Records location information and associates it with a
-/// label. Returns a unique label ID used to generate a label and provide
-/// correspondence to the source line list.
-unsigned DwarfDebug::recordSourceLine(unsigned Line, unsigned Col,
- MDNode *S) {
+/// recordSourceLine - Register a source line with debug info. Returns the
+/// unique label that was emitted and which provides correspondence to
+/// the source line list.
+MCSymbol *DwarfDebug::recordSourceLine(unsigned Line, unsigned Col, MDNode *S) {
if (!MMI)
return 0;
- if (TimePassesIsEnabled)
- DebugTimer->startTimer();
+ TimeRegion Timer(DebugTimer);
StringRef Dir;
StringRef Fn;
Dir = DB.getDirectory();
Fn = DB.getFilename();
} else
- assert (0 && "Unexpected scope info");
+ assert(0 && "Unexpected scope info");
unsigned Src = GetOrCreateSourceID(Dir, Fn);
- unsigned ID = MMI->NextLabelID();
- Lines.push_back(SrcLineInfo(Line, Col, Src, ID));
-
- if (TimePassesIsEnabled)
- DebugTimer->stopTimer();
+ MCSymbol *Label = MMI->getContext().CreateTempSymbol();
+ Lines.push_back(SrcLineInfo(Line, Col, Src, Label));
- return ID;
+ Asm->OutStreamer.EmitLabel(Label);
+ return Label;
}
/// getOrCreateSourceID - Public version of GetOrCreateSourceID. This can be
/// well.
unsigned DwarfDebug::getOrCreateSourceID(const std::string &DirName,
const std::string &FileName) {
- if (TimePassesIsEnabled)
- DebugTimer->startTimer();
-
- unsigned SrcId = GetOrCreateSourceID(DirName.c_str(), FileName.c_str());
-
- if (TimePassesIsEnabled)
- DebugTimer->stopTimer();
-
- return SrcId;
+ TimeRegion Timer(DebugTimer);
+ return GetOrCreateSourceID(DirName.c_str(), FileName.c_str());
}
//===----------------------------------------------------------------------===//
const std::vector<DIE *> &Children = Die->getChildren();
// If not last sibling and has children then add sibling offset attribute.
- if (!Last && !Children.empty()) Die->addSiblingOffset();
+ if (!Last && !Children.empty())
+ Die->addSiblingOffset(DIEValueAllocator);
// Record the abbreviation.
assignAbbrevNumber(Die->getAbbrev());
// Size the DIE attribute values.
for (unsigned i = 0, N = Values.size(); i < N; ++i)
// Size attribute value.
- Offset += Values[i]->SizeOf(TD, AbbrevData[i].getForm());
+ Offset += Values[i]->SizeOf(Asm, AbbrevData[i].getForm());
// Size the DIE children if any.
if (!Children.empty()) {
CompileUnitOffsets[ModuleCU] = 0;
}
-/// emitInitial - Emit initial Dwarf declarations. This is necessary for cc
-/// tools to recognize the object file contains Dwarf information.
-void DwarfDebug::emitInitial() {
- // Check to see if we already emitted intial headers.
- if (didInitial) return;
- didInitial = true;
+/// EmitSectionSym - Switch to the specified MCSection and emit an assembler
+/// temporary label to it if SymbolStem is specified.
+static MCSymbol *EmitSectionSym(AsmPrinter *Asm, const MCSection *Section,
+ const char *SymbolStem = 0) {
+ Asm->OutStreamer.SwitchSection(Section);
+ if (!SymbolStem) return 0;
+
+ MCSymbol *TmpSym = Asm->GetTempSymbol(SymbolStem);
+ Asm->OutStreamer.EmitLabel(TmpSym);
+ return TmpSym;
+}
+/// EmitSectionLabels - Emit initial Dwarf sections with a label at
+/// the start of each one.
+void DwarfDebug::EmitSectionLabels() {
const TargetLoweringObjectFile &TLOF = Asm->getObjFileLowering();
// Dwarf sections base addresses.
- if (MAI->doesDwarfRequireFrameSection()) {
- Asm->OutStreamer.SwitchSection(TLOF.getDwarfFrameSection());
- EmitLabel("section_debug_frame", 0);
- }
-
- Asm->OutStreamer.SwitchSection(TLOF.getDwarfInfoSection());
- EmitLabel("section_info", 0);
- Asm->OutStreamer.SwitchSection(TLOF.getDwarfAbbrevSection());
- EmitLabel("section_abbrev", 0);
- Asm->OutStreamer.SwitchSection(TLOF.getDwarfARangesSection());
- EmitLabel("section_aranges", 0);
-
- if (const MCSection *LineInfoDirective = TLOF.getDwarfMacroInfoSection()) {
- Asm->OutStreamer.SwitchSection(LineInfoDirective);
- EmitLabel("section_macinfo", 0);
- }
-
- Asm->OutStreamer.SwitchSection(TLOF.getDwarfLineSection());
- EmitLabel("section_line", 0);
- Asm->OutStreamer.SwitchSection(TLOF.getDwarfLocSection());
- EmitLabel("section_loc", 0);
- Asm->OutStreamer.SwitchSection(TLOF.getDwarfPubNamesSection());
- EmitLabel("section_pubnames", 0);
- Asm->OutStreamer.SwitchSection(TLOF.getDwarfPubTypesSection());
- EmitLabel("section_pubtypes", 0);
- Asm->OutStreamer.SwitchSection(TLOF.getDwarfStrSection());
- EmitLabel("section_str", 0);
- Asm->OutStreamer.SwitchSection(TLOF.getDwarfRangesSection());
- EmitLabel("section_ranges", 0);
-
- Asm->OutStreamer.SwitchSection(TLOF.getTextSection());
- EmitLabel("text_begin", 0);
- Asm->OutStreamer.SwitchSection(TLOF.getDataSection());
- EmitLabel("data_begin", 0);
+ if (Asm->MAI->doesDwarfRequireFrameSection()) {
+ DwarfFrameSectionSym =
+ EmitSectionSym(Asm, TLOF.getDwarfFrameSection(), "section_debug_frame");
+ }
+
+ DwarfInfoSectionSym =
+ EmitSectionSym(Asm, TLOF.getDwarfInfoSection(), "section_info");
+ DwarfAbbrevSectionSym =
+ EmitSectionSym(Asm, TLOF.getDwarfAbbrevSection(), "section_abbrev");
+ EmitSectionSym(Asm, TLOF.getDwarfARangesSection());
+
+ if (const MCSection *MacroInfo = TLOF.getDwarfMacroInfoSection())
+ EmitSectionSym(Asm, MacroInfo);
+
+ EmitSectionSym(Asm, TLOF.getDwarfLineSection());
+ EmitSectionSym(Asm, TLOF.getDwarfLocSection());
+ EmitSectionSym(Asm, TLOF.getDwarfPubNamesSection());
+ EmitSectionSym(Asm, TLOF.getDwarfPubTypesSection());
+ DwarfStrSectionSym =
+ EmitSectionSym(Asm, TLOF.getDwarfStrSection(), "section_str");
+ EmitSectionSym(Asm, TLOF.getDwarfRangesSection());
+
+ TextSectionSym = EmitSectionSym(Asm, TLOF.getTextSection(), "text_begin");
+ EmitSectionSym(Asm, TLOF.getDataSection());
}
/// emitDIE - Recusively Emits a debug information entry.
unsigned AbbrevNumber = Die->getAbbrevNumber();
const DIEAbbrev *Abbrev = Abbreviations[AbbrevNumber - 1];
- Asm->O << '\n';
-
// Emit the code (index) for the abbreviation.
- if (Asm->VerboseAsm)
+ if (Asm->isVerbose())
Asm->OutStreamer.AddComment("Abbrev [" + Twine(AbbrevNumber) + "] 0x" +
Twine::utohexstr(Die->getOffset()) + ":0x" +
Twine::utohexstr(Die->getSize()) + " " +
dwarf::TagString(Abbrev->getTag()));
- EmitULEB128(AbbrevNumber);
+ Asm->EmitULEB128(AbbrevNumber);
- SmallVector<DIEValue*, 32> &Values = Die->getValues();
+ const SmallVector<DIEValue*, 32> &Values = Die->getValues();
const SmallVector<DIEAbbrevData, 8> &AbbrevData = Abbrev->getData();
// Emit the DIE attribute values.
unsigned Form = AbbrevData[i].getForm();
assert(Form && "Too many attributes for DIE (check abbreviation)");
- if (Asm->VerboseAsm)
+ if (Asm->isVerbose())
Asm->OutStreamer.AddComment(dwarf::AttributeString(Attr));
switch (Attr) {
}
default:
// Emit an attribute using the defined form.
- Values[i]->EmitValue(this, Form);
- O << "\n"; // REMOVE This once all EmitValue impls emit their own newline.
+ Values[i]->EmitValue(Asm, Form);
break;
}
}
for (unsigned j = 0, M = Children.size(); j < M; ++j)
emitDIE(Children[j]);
- Asm->EmitInt8(0); EOL("End Of Children Mark");
+ if (Asm->isVerbose())
+ Asm->OutStreamer.AddComment("End Of Children Mark");
+ Asm->EmitInt8(0);
}
}
DIE *Die = ModuleCU->getCUDie();
// Emit the compile units header.
- EmitLabel("info_begin", ModuleCU->getID());
+ Asm->OutStreamer.EmitLabel(Asm->GetTempSymbol("info_begin",
+ ModuleCU->getID()));
// Emit size of content not including length itself
unsigned ContentSize = Die->getSize() +
sizeof(int8_t) + // Pointer Size (in bytes)
sizeof(int32_t); // FIXME - extra pad for gdb bug.
- Asm->EmitInt32(ContentSize); EOL("Length of Compilation Unit Info");
- Asm->EmitInt16(dwarf::DWARF_VERSION); EOL("DWARF version number");
- EmitSectionOffset("abbrev_begin", "section_abbrev", 0, 0, true, false);
- EOL("Offset Into Abbrev. Section");
- Asm->EmitInt8(TD->getPointerSize()); EOL("Address Size (in bytes)");
+ Asm->OutStreamer.AddComment("Length of Compilation Unit Info");
+ Asm->EmitInt32(ContentSize);
+ Asm->OutStreamer.AddComment("DWARF version number");
+ Asm->EmitInt16(dwarf::DWARF_VERSION);
+ Asm->OutStreamer.AddComment("Offset Into Abbrev. Section");
+ Asm->EmitSectionOffset(Asm->GetTempSymbol("abbrev_begin"),
+ DwarfAbbrevSectionSym);
+ Asm->OutStreamer.AddComment("Address Size (in bytes)");
+ Asm->EmitInt8(Asm->getTargetData().getPointerSize());
emitDIE(Die);
// FIXME - extra padding for gdb bug.
- Asm->EmitInt8(0); EOL("Extra Pad For GDB");
- Asm->EmitInt8(0); EOL("Extra Pad For GDB");
- Asm->EmitInt8(0); EOL("Extra Pad For GDB");
- Asm->EmitInt8(0); EOL("Extra Pad For GDB");
- EmitLabel("info_end", ModuleCU->getID());
- Asm->O << '\n';
+ Asm->OutStreamer.AddComment("4 extra padding bytes for GDB");
+ Asm->EmitInt8(0);
+ Asm->EmitInt8(0);
+ Asm->EmitInt8(0);
+ Asm->EmitInt8(0);
+ Asm->OutStreamer.EmitLabel(Asm->GetTempSymbol("info_end", ModuleCU->getID()));
}
/// emitAbbreviations - Emit the abbreviation section.
Asm->OutStreamer.SwitchSection(
Asm->getObjFileLowering().getDwarfAbbrevSection());
- EmitLabel("abbrev_begin", 0);
+ Asm->OutStreamer.EmitLabel(Asm->GetTempSymbol("abbrev_begin"));
// For each abbrevation.
for (unsigned i = 0, N = Abbreviations.size(); i < N; ++i) {
const DIEAbbrev *Abbrev = Abbreviations[i];
// Emit the abbrevations code (base 1 index.)
- EmitULEB128(Abbrev->getNumber(), "Abbreviation Code");
+ Asm->EmitULEB128(Abbrev->getNumber(), "Abbreviation Code");
// Emit the abbreviations data.
- Abbrev->Emit(this);
- Asm->O << '\n';
+ Abbrev->Emit(Asm);
}
// Mark end of abbreviations.
- EmitULEB128(0, "EOM(3)");
+ Asm->EmitULEB128(0, "EOM(3)");
- EmitLabel("abbrev_end", 0);
- Asm->O << '\n';
+ Asm->OutStreamer.EmitLabel(Asm->GetTempSymbol("abbrev_end"));
}
}
///
void DwarfDebug::emitEndOfLineMatrix(unsigned SectionEnd) {
// Define last address of section.
- Asm->EmitInt8(0); EOL("Extended Op");
- Asm->EmitInt8(TD->getPointerSize() + 1); EOL("Op size");
- Asm->EmitInt8(dwarf::DW_LNE_set_address); EOL("DW_LNE_set_address");
- EmitReference("section_end", SectionEnd); EOL("Section end label");
+ Asm->OutStreamer.AddComment("Extended Op");
+ Asm->EmitInt8(0);
+
+ Asm->OutStreamer.AddComment("Op size");
+ Asm->EmitInt8(Asm->getTargetData().getPointerSize() + 1);
+ Asm->OutStreamer.AddComment("DW_LNE_set_address");
+ Asm->EmitInt8(dwarf::DW_LNE_set_address);
+
+ Asm->OutStreamer.AddComment("Section end label");
+
+ Asm->OutStreamer.EmitSymbolValue(Asm->GetTempSymbol("section_end",SectionEnd),
+ Asm->getTargetData().getPointerSize(),
+ 0/*AddrSpace*/);
// Mark end of matrix.
- Asm->EmitInt8(0); EOL("DW_LNE_end_sequence");
+ Asm->OutStreamer.AddComment("DW_LNE_end_sequence");
+ Asm->EmitInt8(0);
Asm->EmitInt8(1);
Asm->EmitInt8(1);
}
void DwarfDebug::emitDebugLines() {
// If the target is using .loc/.file, the assembler will be emitting the
// .debug_line table automatically.
- if (MAI->hasDotLocAndDotFile())
+ if (Asm->MAI->hasDotLocAndDotFile())
return;
// Minimum line delta, thus ranging from -10..(255-10).
Asm->getObjFileLowering().getDwarfLineSection());
// Construct the section header.
- EmitDifference("line_end", 0, "line_begin", 0, true);
- EOL("Length of Source Line Info");
- EmitLabel("line_begin", 0);
+ Asm->OutStreamer.AddComment("Length of Source Line Info");
+ Asm->EmitLabelDifference(Asm->GetTempSymbol("line_end"),
+ Asm->GetTempSymbol("line_begin"), 4);
+ Asm->OutStreamer.EmitLabel(Asm->GetTempSymbol("line_begin"));
- Asm->EmitInt16(dwarf::DWARF_VERSION); EOL("DWARF version number");
+ Asm->OutStreamer.AddComment("DWARF version number");
+ Asm->EmitInt16(dwarf::DWARF_VERSION);
- EmitDifference("line_prolog_end", 0, "line_prolog_begin", 0, true);
- EOL("Prolog Length");
- EmitLabel("line_prolog_begin", 0);
+ Asm->OutStreamer.AddComment("Prolog Length");
+ Asm->EmitLabelDifference(Asm->GetTempSymbol("line_prolog_end"),
+ Asm->GetTempSymbol("line_prolog_begin"), 4);
+ Asm->OutStreamer.EmitLabel(Asm->GetTempSymbol("line_prolog_begin"));
- Asm->EmitInt8(1); EOL("Minimum Instruction Length");
- Asm->EmitInt8(1); EOL("Default is_stmt_start flag");
- Asm->EmitInt8(MinLineDelta); EOL("Line Base Value (Special Opcodes)");
- Asm->EmitInt8(MaxLineDelta); EOL("Line Range Value (Special Opcodes)");
- Asm->EmitInt8(-MinLineDelta); EOL("Special Opcode Base");
+ Asm->OutStreamer.AddComment("Minimum Instruction Length");
+ Asm->EmitInt8(1);
+ Asm->OutStreamer.AddComment("Default is_stmt_start flag");
+ Asm->EmitInt8(1);
+ Asm->OutStreamer.AddComment("Line Base Value (Special Opcodes)");
+ Asm->EmitInt8(MinLineDelta);
+ Asm->OutStreamer.AddComment("Line Range Value (Special Opcodes)");
+ Asm->EmitInt8(MaxLineDelta);
+ Asm->OutStreamer.AddComment("Special Opcode Base");
+ Asm->EmitInt8(-MinLineDelta);
// Line number standard opcode encodings argument count
- Asm->EmitInt8(0); EOL("DW_LNS_copy arg count");
- Asm->EmitInt8(1); EOL("DW_LNS_advance_pc arg count");
- Asm->EmitInt8(1); EOL("DW_LNS_advance_line arg count");
- Asm->EmitInt8(1); EOL("DW_LNS_set_file arg count");
- Asm->EmitInt8(1); EOL("DW_LNS_set_column arg count");
- Asm->EmitInt8(0); EOL("DW_LNS_negate_stmt arg count");
- Asm->EmitInt8(0); EOL("DW_LNS_set_basic_block arg count");
- Asm->EmitInt8(0); EOL("DW_LNS_const_add_pc arg count");
- Asm->EmitInt8(1); EOL("DW_LNS_fixed_advance_pc arg count");
+ Asm->OutStreamer.AddComment("DW_LNS_copy arg count");
+ Asm->EmitInt8(0);
+ Asm->OutStreamer.AddComment("DW_LNS_advance_pc arg count");
+ Asm->EmitInt8(1);
+ Asm->OutStreamer.AddComment("DW_LNS_advance_line arg count");
+ Asm->EmitInt8(1);
+ Asm->OutStreamer.AddComment("DW_LNS_set_file arg count");
+ Asm->EmitInt8(1);
+ Asm->OutStreamer.AddComment("DW_LNS_set_column arg count");
+ Asm->EmitInt8(1);
+ Asm->OutStreamer.AddComment("DW_LNS_negate_stmt arg count");
+ Asm->EmitInt8(0);
+ Asm->OutStreamer.AddComment("DW_LNS_set_basic_block arg count");
+ Asm->EmitInt8(0);
+ Asm->OutStreamer.AddComment("DW_LNS_const_add_pc arg count");
+ Asm->EmitInt8(0);
+ Asm->OutStreamer.AddComment("DW_LNS_fixed_advance_pc arg count");
+ Asm->EmitInt8(1);
// Emit directories.
for (unsigned DI = 1, DE = getNumSourceDirectories()+1; DI != DE; ++DI) {
const std::string &Dir = getSourceDirectoryName(DI);
- if (Asm->VerboseAsm) Asm->OutStreamer.AddComment("Directory");
+ if (Asm->isVerbose()) Asm->OutStreamer.AddComment("Directory");
Asm->OutStreamer.EmitBytes(StringRef(Dir.c_str(), Dir.size()+1), 0);
}
- Asm->EmitInt8(0); EOL("End of directories");
+ Asm->OutStreamer.AddComment("End of directories");
+ Asm->EmitInt8(0);
// Emit files.
for (unsigned SI = 1, SE = getNumSourceIds()+1; SI != SE; ++SI) {
// Remember source id starts at 1.
std::pair<unsigned, unsigned> Id = getSourceDirectoryAndFileIds(SI);
const std::string &FN = getSourceFileName(Id.second);
- if (Asm->VerboseAsm) Asm->OutStreamer.AddComment("Source");
+ if (Asm->isVerbose()) Asm->OutStreamer.AddComment("Source");
Asm->OutStreamer.EmitBytes(StringRef(FN.c_str(), FN.size()+1), 0);
- EmitULEB128(Id.first, "Directory #");
- EmitULEB128(0, "Mod date");
- EmitULEB128(0, "File size");
+ Asm->EmitULEB128(Id.first, "Directory #");
+ Asm->EmitULEB128(0, "Mod date");
+ Asm->EmitULEB128(0, "File size");
}
- Asm->EmitInt8(0); EOL("End of files");
+ Asm->OutStreamer.AddComment("End of files");
+ Asm->EmitInt8(0);
- EmitLabel("line_prolog_end", 0);
+ Asm->OutStreamer.EmitLabel(Asm->GetTempSymbol("line_prolog_end"));
// A sequence for each text section.
unsigned SecSrcLinesSize = SectionSourceLines.size();
// Isolate current sections line info.
const std::vector<SrcLineInfo> &LineInfos = SectionSourceLines[j];
- /*if (Asm->isVerbose()) {
- const MCSection *S = SectionMap[j + 1];
- O << '\t' << MAI->getCommentString() << " Section"
- << S->getName() << '\n';
- }*/
- Asm->O << '\n';
-
// Dwarf assumes we start with first line of first source file.
unsigned Source = 1;
unsigned Line = 1;
// Construct rows of the address, source, line, column matrix.
for (unsigned i = 0, N = LineInfos.size(); i < N; ++i) {
const SrcLineInfo &LineInfo = LineInfos[i];
- unsigned LabelID = MMI->MappedLabel(LineInfo.getLabelID());
- if (!LabelID) continue;
+ MCSymbol *Label = LineInfo.getLabel();
+ if (!Label->isDefined()) continue; // Not emitted, in dead code.
if (LineInfo.getLine() == 0) continue;
- if (!Asm->isVerbose())
- Asm->O << '\n';
- else {
- std::pair<unsigned, unsigned> SourceID =
+ if (Asm->isVerbose()) {
+ std::pair<unsigned, unsigned> SrcID =
getSourceDirectoryAndFileIds(LineInfo.getSourceID());
- O << '\t' << MAI->getCommentString() << ' '
- << getSourceDirectoryName(SourceID.first) << '/'
- << getSourceFileName(SourceID.second)
- << ':' << utostr_32(LineInfo.getLine()) << '\n';
+ Asm->OutStreamer.AddComment(Twine(getSourceDirectoryName(SrcID.first)) +
+ "/" +
+ Twine(getSourceFileName(SrcID.second)) +
+ ":" + Twine(LineInfo.getLine()));
}
// Define the line address.
- Asm->EmitInt8(0); EOL("Extended Op");
- Asm->EmitInt8(TD->getPointerSize() + 1); EOL("Op size");
- Asm->EmitInt8(dwarf::DW_LNE_set_address); EOL("DW_LNE_set_address");
- EmitReference("label", LabelID); EOL("Location label");
-
+ Asm->OutStreamer.AddComment("Extended Op");
+ Asm->EmitInt8(0);
+ Asm->OutStreamer.AddComment("Op size");
+ Asm->EmitInt8(Asm->getTargetData().getPointerSize() + 1);
+
+ Asm->OutStreamer.AddComment("DW_LNE_set_address");
+ Asm->EmitInt8(dwarf::DW_LNE_set_address);
+
+ Asm->OutStreamer.AddComment("Location label");
+ Asm->OutStreamer.EmitSymbolValue(Label,
+ Asm->getTargetData().getPointerSize(),
+ 0/*AddrSpace*/);
+
// If change of source, then switch to the new source.
if (Source != LineInfo.getSourceID()) {
Source = LineInfo.getSourceID();
- Asm->EmitInt8(dwarf::DW_LNS_set_file); EOL("DW_LNS_set_file");
- EmitULEB128(Source, "New Source");
+ Asm->OutStreamer.AddComment("DW_LNS_set_file");
+ Asm->EmitInt8(dwarf::DW_LNS_set_file);
+ Asm->EmitULEB128(Source, "New Source");
}
// If change of line.
// If delta is small enough and in range...
if (Delta >= 0 && Delta < (MaxLineDelta - 1)) {
// ... then use fast opcode.
- Asm->EmitInt8(Delta - MinLineDelta); EOL("Line Delta");
+ Asm->OutStreamer.AddComment("Line Delta");
+ Asm->EmitInt8(Delta - MinLineDelta);
} else {
// ... otherwise use long hand.
+ Asm->OutStreamer.AddComment("DW_LNS_advance_line");
Asm->EmitInt8(dwarf::DW_LNS_advance_line);
- EOL("DW_LNS_advance_line");
- EmitSLEB128(Offset, "Line Offset");
- Asm->EmitInt8(dwarf::DW_LNS_copy); EOL("DW_LNS_copy");
+ Asm->EmitSLEB128(Offset, "Line Offset");
+ Asm->OutStreamer.AddComment("DW_LNS_copy");
+ Asm->EmitInt8(dwarf::DW_LNS_copy);
}
} else {
// Copy the previous row (different address or source)
- Asm->EmitInt8(dwarf::DW_LNS_copy); EOL("DW_LNS_copy");
+ Asm->OutStreamer.AddComment("DW_LNS_copy");
+ Asm->EmitInt8(dwarf::DW_LNS_copy);
}
}
// put into it, emit an empty table.
emitEndOfLineMatrix(1);
- EmitLabel("line_end", 0);
- Asm->O << '\n';
+ Asm->OutStreamer.EmitLabel(Asm->GetTempSymbol("line_end"));
}
/// emitCommonDebugFrame - Emit common frame info into a debug frame section.
///
void DwarfDebug::emitCommonDebugFrame() {
- if (!MAI->doesDwarfRequireFrameSection())
+ if (!Asm->MAI->doesDwarfRequireFrameSection())
return;
- int stackGrowth =
- Asm->TM.getFrameInfo()->getStackGrowthDirection() ==
- TargetFrameInfo::StackGrowsUp ?
- TD->getPointerSize() : -TD->getPointerSize();
+ int stackGrowth = Asm->getTargetData().getPointerSize();
+ if (Asm->TM.getFrameInfo()->getStackGrowthDirection() ==
+ TargetFrameInfo::StackGrowsDown)
+ stackGrowth *= -1;
// Start the dwarf frame section.
Asm->OutStreamer.SwitchSection(
Asm->getObjFileLowering().getDwarfFrameSection());
- EmitLabel("debug_frame_common", 0);
- EmitDifference("debug_frame_common_end", 0,
- "debug_frame_common_begin", 0, true);
- EOL("Length of Common Information Entry");
+ Asm->OutStreamer.EmitLabel(Asm->GetTempSymbol("debug_frame_common"));
+ Asm->OutStreamer.AddComment("Length of Common Information Entry");
+ Asm->EmitLabelDifference(Asm->GetTempSymbol("debug_frame_common_end"),
+ Asm->GetTempSymbol("debug_frame_common_begin"), 4);
- EmitLabel("debug_frame_common_begin", 0);
+ Asm->OutStreamer.EmitLabel(Asm->GetTempSymbol("debug_frame_common_begin"));
+ Asm->OutStreamer.AddComment("CIE Identifier Tag");
Asm->EmitInt32((int)dwarf::DW_CIE_ID);
- EOL("CIE Identifier Tag");
+ Asm->OutStreamer.AddComment("CIE Version");
Asm->EmitInt8(dwarf::DW_CIE_VERSION);
- EOL("CIE Version");
+ Asm->OutStreamer.AddComment("CIE Augmentation");
Asm->OutStreamer.EmitIntValue(0, 1, /*addrspace*/0); // nul terminator.
- EOL("CIE Augmentation");
- EmitULEB128(1, "CIE Code Alignment Factor");
- EmitSLEB128(stackGrowth, "CIE Data Alignment Factor");
+ Asm->EmitULEB128(1, "CIE Code Alignment Factor");
+ Asm->EmitSLEB128(stackGrowth, "CIE Data Alignment Factor");
+ Asm->OutStreamer.AddComment("CIE RA Column");
+ const TargetRegisterInfo *RI = Asm->TM.getRegisterInfo();
Asm->EmitInt8(RI->getDwarfRegNum(RI->getRARegister(), false));
- EOL("CIE RA Column");
std::vector<MachineMove> Moves;
RI->getInitialFrameState(Moves);
- EmitFrameMoves(NULL, 0, Moves, false);
+ Asm->EmitFrameMoves(Moves, 0, false);
Asm->EmitAlignment(2, 0, 0, false);
- EmitLabel("debug_frame_common_end", 0);
- Asm->O << '\n';
+ Asm->OutStreamer.EmitLabel(Asm->GetTempSymbol("debug_frame_common_end"));
}
/// emitFunctionDebugFrame - Emit per function frame info into a debug frame
/// section.
-void
-DwarfDebug::emitFunctionDebugFrame(const FunctionDebugFrameInfo&DebugFrameInfo){
- if (!MAI->doesDwarfRequireFrameSection())
+void DwarfDebug::
+emitFunctionDebugFrame(const FunctionDebugFrameInfo &DebugFrameInfo) {
+ if (!Asm->MAI->doesDwarfRequireFrameSection())
return;
// Start the dwarf frame section.
Asm->OutStreamer.SwitchSection(
Asm->getObjFileLowering().getDwarfFrameSection());
- EmitDifference("debug_frame_end", DebugFrameInfo.Number,
- "debug_frame_begin", DebugFrameInfo.Number, true);
- EOL("Length of Frame Information Entry");
-
- EmitLabel("debug_frame_begin", DebugFrameInfo.Number);
-
- EmitSectionOffset("debug_frame_common", "section_debug_frame",
- 0, 0, true, false);
- EOL("FDE CIE offset");
-
- EmitReference("func_begin", DebugFrameInfo.Number);
- EOL("FDE initial location");
- EmitDifference("func_end", DebugFrameInfo.Number,
- "func_begin", DebugFrameInfo.Number);
- EOL("FDE address range");
+ Asm->OutStreamer.AddComment("Length of Frame Information Entry");
+ MCSymbol *DebugFrameBegin =
+ Asm->GetTempSymbol("debug_frame_begin", DebugFrameInfo.Number);
+ MCSymbol *DebugFrameEnd =
+ Asm->GetTempSymbol("debug_frame_end", DebugFrameInfo.Number);
+ Asm->EmitLabelDifference(DebugFrameEnd, DebugFrameBegin, 4);
+
+ Asm->OutStreamer.EmitLabel(DebugFrameBegin);
+
+ Asm->OutStreamer.AddComment("FDE CIE offset");
+ Asm->EmitSectionOffset(Asm->GetTempSymbol("debug_frame_common"),
+ DwarfFrameSectionSym);
+
+ Asm->OutStreamer.AddComment("FDE initial location");
+ MCSymbol *FuncBeginSym =
+ Asm->GetTempSymbol("func_begin", DebugFrameInfo.Number);
+ Asm->OutStreamer.EmitSymbolValue(FuncBeginSym,
+ Asm->getTargetData().getPointerSize(),
+ 0/*AddrSpace*/);
+
+
+ Asm->OutStreamer.AddComment("FDE address range");
+ Asm->EmitLabelDifference(Asm->GetTempSymbol("func_end",DebugFrameInfo.Number),
+ FuncBeginSym, Asm->getTargetData().getPointerSize());
- EmitFrameMoves("func_begin", DebugFrameInfo.Number, DebugFrameInfo.Moves,
- false);
+ Asm->EmitFrameMoves(DebugFrameInfo.Moves, FuncBeginSym, false);
Asm->EmitAlignment(2, 0, 0, false);
- EmitLabel("debug_frame_end", DebugFrameInfo.Number);
- Asm->O << '\n';
+ Asm->OutStreamer.EmitLabel(DebugFrameEnd);
}
/// emitDebugPubNames - Emit visible names into a debug pubnames section.
Asm->OutStreamer.SwitchSection(
Asm->getObjFileLowering().getDwarfPubNamesSection());
- EmitDifference("pubnames_end", ModuleCU->getID(),
- "pubnames_begin", ModuleCU->getID(), true);
- EOL("Length of Public Names Info");
+ Asm->OutStreamer.AddComment("Length of Public Names Info");
+ Asm->EmitLabelDifference(
+ Asm->GetTempSymbol("pubnames_end", ModuleCU->getID()),
+ Asm->GetTempSymbol("pubnames_begin", ModuleCU->getID()), 4);
- EmitLabel("pubnames_begin", ModuleCU->getID());
+ Asm->OutStreamer.EmitLabel(Asm->GetTempSymbol("pubnames_begin",
+ ModuleCU->getID()));
- Asm->EmitInt16(dwarf::DWARF_VERSION); EOL("DWARF Version");
+ Asm->OutStreamer.AddComment("DWARF Version");
+ Asm->EmitInt16(dwarf::DWARF_VERSION);
- EmitSectionOffset("info_begin", "section_info",
- ModuleCU->getID(), 0, true, false);
- EOL("Offset of Compilation Unit Info");
+ Asm->OutStreamer.AddComment("Offset of Compilation Unit Info");
+ Asm->EmitSectionOffset(Asm->GetTempSymbol("info_begin", ModuleCU->getID()),
+ DwarfInfoSectionSym);
- EmitDifference("info_end", ModuleCU->getID(), "info_begin", ModuleCU->getID(),
- true);
- EOL("Compilation Unit Length");
+ Asm->OutStreamer.AddComment("Compilation Unit Length");
+ Asm->EmitLabelDifference(Asm->GetTempSymbol("info_end", ModuleCU->getID()),
+ Asm->GetTempSymbol("info_begin", ModuleCU->getID()),
+ 4);
const StringMap<DIE*> &Globals = ModuleCU->getGlobals();
for (StringMap<DIE*>::const_iterator
GI = Globals.begin(), GE = Globals.end(); GI != GE; ++GI) {
const char *Name = GI->getKeyData();
- DIE * Entity = GI->second;
+ DIE *Entity = GI->second;
- Asm->EmitInt32(Entity->getOffset()); EOL("DIE offset");
+ Asm->OutStreamer.AddComment("DIE offset");
+ Asm->EmitInt32(Entity->getOffset());
- if (Asm->VerboseAsm)
+ if (Asm->isVerbose())
Asm->OutStreamer.AddComment("External Name");
Asm->OutStreamer.EmitBytes(StringRef(Name, strlen(Name)+1), 0);
}
- Asm->EmitInt32(0); EOL("End Mark");
- EmitLabel("pubnames_end", ModuleCU->getID());
- Asm->O << '\n';
+ Asm->OutStreamer.AddComment("End Mark");
+ Asm->EmitInt32(0);
+ Asm->OutStreamer.EmitLabel(Asm->GetTempSymbol("pubnames_end",
+ ModuleCU->getID()));
}
void DwarfDebug::emitDebugPubTypes() {
// Start the dwarf pubnames section.
Asm->OutStreamer.SwitchSection(
Asm->getObjFileLowering().getDwarfPubTypesSection());
- EmitDifference("pubtypes_end", ModuleCU->getID(),
- "pubtypes_begin", ModuleCU->getID(), true);
- EOL("Length of Public Types Info");
+ Asm->OutStreamer.AddComment("Length of Public Types Info");
+ Asm->EmitLabelDifference(
+ Asm->GetTempSymbol("pubtypes_end", ModuleCU->getID()),
+ Asm->GetTempSymbol("pubtypes_begin", ModuleCU->getID()), 4);
- EmitLabel("pubtypes_begin", ModuleCU->getID());
+ Asm->OutStreamer.EmitLabel(Asm->GetTempSymbol("pubtypes_begin",
+ ModuleCU->getID()));
- if (Asm->VerboseAsm) Asm->OutStreamer.AddComment("DWARF Version");
+ if (Asm->isVerbose()) Asm->OutStreamer.AddComment("DWARF Version");
Asm->EmitInt16(dwarf::DWARF_VERSION);
- EmitSectionOffset("info_begin", "section_info",
- ModuleCU->getID(), 0, true, false);
- EOL("Offset of Compilation ModuleCU Info");
+ Asm->OutStreamer.AddComment("Offset of Compilation ModuleCU Info");
+ Asm->EmitSectionOffset(Asm->GetTempSymbol("info_begin", ModuleCU->getID()),
+ DwarfInfoSectionSym);
- EmitDifference("info_end", ModuleCU->getID(), "info_begin", ModuleCU->getID(),
- true);
- EOL("Compilation ModuleCU Length");
+ Asm->OutStreamer.AddComment("Compilation ModuleCU Length");
+ Asm->EmitLabelDifference(Asm->GetTempSymbol("info_end", ModuleCU->getID()),
+ Asm->GetTempSymbol("info_begin", ModuleCU->getID()),
+ 4);
const StringMap<DIE*> &Globals = ModuleCU->getGlobalTypes();
for (StringMap<DIE*>::const_iterator
const char *Name = GI->getKeyData();
DIE * Entity = GI->second;
- if (Asm->VerboseAsm) Asm->OutStreamer.AddComment("DIE offset");
+ if (Asm->isVerbose()) Asm->OutStreamer.AddComment("DIE offset");
Asm->EmitInt32(Entity->getOffset());
- if (Asm->VerboseAsm) Asm->OutStreamer.AddComment("External Name");
+ if (Asm->isVerbose()) Asm->OutStreamer.AddComment("External Name");
Asm->OutStreamer.EmitBytes(StringRef(Name, GI->getKeyLength()+1), 0);
}
- Asm->EmitInt32(0); EOL("End Mark");
- EmitLabel("pubtypes_end", ModuleCU->getID());
- Asm->O << '\n';
+ Asm->OutStreamer.AddComment("End Mark");
+ Asm->EmitInt32(0);
+ Asm->OutStreamer.EmitLabel(Asm->GetTempSymbol("pubtypes_end",
+ ModuleCU->getID()));
}
/// emitDebugStr - Emit visible names into a debug str section.
///
void DwarfDebug::emitDebugStr() {
// Check to see if it is worth the effort.
- if (!StringPool.empty()) {
- // Start the dwarf str section.
- Asm->OutStreamer.SwitchSection(
+ if (StringPool.empty()) return;
+
+ // Start the dwarf str section.
+ Asm->OutStreamer.SwitchSection(
Asm->getObjFileLowering().getDwarfStrSection());
- // For each of strings in the string pool.
- for (unsigned StringID = 1, N = StringPool.size();
- StringID <= N; ++StringID) {
- // Emit a label for reference from debug information entries.
- EmitLabel("string", StringID);
-
- // Emit the string itself.
- const std::string &String = StringPool[StringID];
- Asm->OutStreamer.EmitBytes(StringRef(String.c_str(), String.size()+1), 0);
- }
-
- Asm->O << '\n';
+ // Get all of the string pool entries and put them in an array by their ID so
+ // we can sort them.
+ SmallVector<std::pair<unsigned,
+ StringMapEntry<std::pair<MCSymbol*, unsigned> >*>, 64> Entries;
+
+ for (StringMap<std::pair<MCSymbol*, unsigned> >::iterator
+ I = StringPool.begin(), E = StringPool.end(); I != E; ++I)
+ Entries.push_back(std::make_pair(I->second.second, &*I));
+
+ array_pod_sort(Entries.begin(), Entries.end());
+
+ for (unsigned i = 0, e = Entries.size(); i != e; ++i) {
+ // Emit a label for reference from debug information entries.
+ Asm->OutStreamer.EmitLabel(Entries[i].second->getValue().first);
+
+ // Emit the string itself.
+ Asm->OutStreamer.EmitBytes(Entries[i].second->getKey(), 0/*addrspace*/);
}
}
// Start the dwarf aranges section.
Asm->OutStreamer.SwitchSection(
Asm->getObjFileLowering().getDwarfARangesSection());
-
- // FIXME - Mock up
-#if 0
- CompileUnit *Unit = GetBaseCompileUnit();
-
- // Don't include size of length
- Asm->EmitInt32(0x1c); EOL("Length of Address Ranges Info");
-
- Asm->EmitInt16(dwarf::DWARF_VERSION); EOL("Dwarf Version");
-
- EmitReference("info_begin", Unit->getID());
- EOL("Offset of Compilation Unit Info");
-
- Asm->EmitInt8(TD->getPointerSize()); EOL("Size of Address");
-
- Asm->EmitInt8(0); EOL("Size of Segment Descriptor");
-
- Asm->EmitInt16(0); EOL("Pad (1)");
- Asm->EmitInt16(0); EOL("Pad (2)");
-
- // Range 1
- EmitReference("text_begin", 0); EOL("Address");
- EmitDifference("text_end", 0, "text_begin", 0, true); EOL("Length");
-
- Asm->EmitInt32(0); EOL("EOM (1)");
- Asm->EmitInt32(0); EOL("EOM (2)");
-#endif
}
/// emitDebugRanges - Emit visible names into a debug ranges section.
/// __debug_info section, and the low_pc is the starting address for the
/// inlining instance.
void DwarfDebug::emitDebugInlineInfo() {
- if (!MAI->doesDwarfUsesInlineInfoSection())
+ if (!Asm->MAI->doesDwarfUsesInlineInfoSection())
return;
if (!ModuleCU)
Asm->OutStreamer.SwitchSection(
Asm->getObjFileLowering().getDwarfDebugInlineSection());
- EmitDifference("debug_inlined_end", 1,
- "debug_inlined_begin", 1, true);
- EOL("Length of Debug Inlined Information Entry");
+ Asm->OutStreamer.AddComment("Length of Debug Inlined Information Entry");
+ Asm->EmitLabelDifference(Asm->GetTempSymbol("debug_inlined_end", 1),
+ Asm->GetTempSymbol("debug_inlined_begin", 1), 4);
- EmitLabel("debug_inlined_begin", 1);
+ Asm->OutStreamer.EmitLabel(Asm->GetTempSymbol("debug_inlined_begin", 1));
- Asm->EmitInt16(dwarf::DWARF_VERSION); EOL("Dwarf Version");
- Asm->EmitInt8(TD->getPointerSize()); EOL("Address Size (in bytes)");
+ Asm->OutStreamer.AddComment("Dwarf Version");
+ Asm->EmitInt16(dwarf::DWARF_VERSION);
+ Asm->OutStreamer.AddComment("Address Size (in bytes)");
+ Asm->EmitInt8(Asm->getTargetData().getPointerSize());
for (SmallVector<MDNode *, 4>::iterator I = InlinedSPNodes.begin(),
E = InlinedSPNodes.end(); I != E; ++I) {
StringRef LName = SP.getLinkageName();
StringRef Name = SP.getName();
+ Asm->OutStreamer.AddComment("MIPS linkage name");
if (LName.empty()) {
Asm->OutStreamer.EmitBytes(Name, 0);
Asm->OutStreamer.EmitIntValue(0, 1, 0); // nul terminator.
} else
- EmitSectionOffset("string", "section_str",
- StringPool.idFor(getRealLinkageName(LName)), false, true);
+ Asm->EmitSectionOffset(getStringPoolEntry(getRealLinkageName(LName)),
+ DwarfStrSectionSym);
- EOL("MIPS linkage name");
- EmitSectionOffset("string", "section_str",
- StringPool.idFor(Name), false, true);
- EOL("Function name");
- EmitULEB128(Labels.size(), "Inline count");
+ Asm->OutStreamer.AddComment("Function name");
+ Asm->EmitSectionOffset(getStringPoolEntry(Name), DwarfStrSectionSym);
+ Asm->EmitULEB128(Labels.size(), "Inline count");
for (SmallVector<InlineInfoLabels, 4>::iterator LI = Labels.begin(),
LE = Labels.end(); LI != LE; ++LI) {
- DIE *SP = LI->second;
- Asm->EmitInt32(SP->getOffset()); EOL("DIE offset");
-
- if (TD->getPointerSize() == sizeof(int32_t))
- O << MAI->getData32bitsDirective();
- else
- O << MAI->getData64bitsDirective();
+ if (Asm->isVerbose()) Asm->OutStreamer.AddComment("DIE offset");
+ Asm->EmitInt32(LI->second->getOffset());
- PrintLabelName("label", LI->first); EOL("low_pc");
+ if (Asm->isVerbose()) Asm->OutStreamer.AddComment("low_pc");
+ Asm->OutStreamer.EmitSymbolValue(LI->first,
+ Asm->getTargetData().getPointerSize(),0);
}
}
- EmitLabel("debug_inlined_end", 1);
- Asm->O << '\n';
+ Asm->OutStreamer.EmitLabel(Asm->GetTempSymbol("debug_inlined_end", 1));
}
projects / oota-llvm.git / blobdiff