DwarfCompileUnit.cpp [plain text]
#define DEBUG_TYPE "dwarfdebug"
#include "DwarfCompileUnit.h"
#include "DwarfDebug.h"
#include "llvm/Constants.h"
#include "llvm/Analysis/DIBuilder.h"
#include "llvm/Target/TargetData.h"
#include "llvm/Target/TargetFrameLowering.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetRegisterInfo.h"
#include "llvm/ADT/APFloat.h"
#include "llvm/Support/ErrorHandling.h"
using namespace llvm;
CompileUnit::CompileUnit(unsigned I, DIE *D, AsmPrinter *A, DwarfDebug *DW)
: ID(I), CUDie(D), Asm(A), DD(DW), IndexTyDie(0) {
DIEIntegerOne = new (DIEValueAllocator) DIEInteger(1);
}
CompileUnit::~CompileUnit() {
for (unsigned j = 0, M = DIEBlocks.size(); j < M; ++j)
DIEBlocks[j]->~DIEBlock();
}
DIEEntry *CompileUnit::createDIEEntry(DIE *Entry) {
DIEEntry *Value = new (DIEValueAllocator) DIEEntry(Entry);
return Value;
}
void CompileUnit::addUInt(DIE *Die, unsigned Attribute,
unsigned Form, uint64_t Integer) {
if (!Form) Form = DIEInteger::BestForm(false, Integer);
DIEValue *Value = Integer == 1 ?
DIEIntegerOne : new (DIEValueAllocator) DIEInteger(Integer);
Die->addValue(Attribute, Form, Value);
}
void CompileUnit::addSInt(DIE *Die, unsigned Attribute,
unsigned Form, int64_t Integer) {
if (!Form) Form = DIEInteger::BestForm(true, Integer);
DIEValue *Value = new (DIEValueAllocator) DIEInteger(Integer);
Die->addValue(Attribute, Form, Value);
}
void CompileUnit::addString(DIE *Die, unsigned Attribute, unsigned Form,
StringRef String) {
DIEValue *Value = new (DIEValueAllocator) DIEString(String);
Die->addValue(Attribute, Form, Value);
}
void CompileUnit::addLabel(DIE *Die, unsigned Attribute, unsigned Form,
const MCSymbol *Label) {
DIEValue *Value = new (DIEValueAllocator) DIELabel(Label);
Die->addValue(Attribute, Form, Value);
}
void CompileUnit::addDelta(DIE *Die, unsigned Attribute, unsigned Form,
const MCSymbol *Hi, const MCSymbol *Lo) {
DIEValue *Value = new (DIEValueAllocator) DIEDelta(Hi, Lo);
Die->addValue(Attribute, Form, Value);
}
void CompileUnit::addDIEEntry(DIE *Die, unsigned Attribute, unsigned Form,
DIE *Entry) {
Die->addValue(Attribute, Form, createDIEEntry(Entry));
}
void CompileUnit::addBlock(DIE *Die, unsigned Attribute, unsigned Form,
DIEBlock *Block) {
Block->ComputeSize(Asm);
DIEBlocks.push_back(Block); Die->addValue(Attribute, Block->BestForm(), Block);
}
void CompileUnit::addSourceLine(DIE *Die, DIVariable V) {
if (!V.Verify())
return;
unsigned Line = V.getLineNumber();
if (Line == 0)
return;
unsigned FileID = DD->GetOrCreateSourceID(V.getContext().getFilename(),
V.getContext().getDirectory());
assert(FileID && "Invalid file id");
addUInt(Die, dwarf::DW_AT_decl_file, 0, FileID);
addUInt(Die, dwarf::DW_AT_decl_line, 0, Line);
}
void CompileUnit::addSourceLine(DIE *Die, DIGlobalVariable G) {
if (!G.Verify())
return;
unsigned Line = G.getLineNumber();
if (Line == 0)
return;
unsigned FileID = DD->GetOrCreateSourceID(G.getContext().getFilename(),
G.getContext().getDirectory());
assert(FileID && "Invalid file id");
addUInt(Die, dwarf::DW_AT_decl_file, 0, FileID);
addUInt(Die, dwarf::DW_AT_decl_line, 0, Line);
}
void CompileUnit::addSourceLine(DIE *Die, DISubprogram SP) {
if (!SP.Verify())
return;
if (SP.getLineNumber() == 0)
return;
unsigned Line = SP.getLineNumber();
if (!SP.getContext().Verify())
return;
unsigned FileID = DD->GetOrCreateSourceID(SP.getFilename(), SP.getDirectory());
assert(FileID && "Invalid file id");
addUInt(Die, dwarf::DW_AT_decl_file, 0, FileID);
addUInt(Die, dwarf::DW_AT_decl_line, 0, Line);
}
void CompileUnit::addSourceLine(DIE *Die, DIType Ty) {
if (!Ty.Verify())
return;
unsigned Line = Ty.getLineNumber();
if (Line == 0 || !Ty.getContext().Verify())
return;
unsigned FileID = DD->GetOrCreateSourceID(Ty.getFilename(), Ty.getDirectory());
assert(FileID && "Invalid file id");
addUInt(Die, dwarf::DW_AT_decl_file, 0, FileID);
addUInt(Die, dwarf::DW_AT_decl_line, 0, Line);
}
void CompileUnit::addSourceLine(DIE *Die, DINameSpace NS) {
if (!NS.Verify())
return;
unsigned Line = NS.getLineNumber();
if (Line == 0)
return;
StringRef FN = NS.getFilename();
unsigned FileID = DD->GetOrCreateSourceID(FN, NS.getDirectory());
assert(FileID && "Invalid file id");
addUInt(Die, dwarf::DW_AT_decl_file, 0, FileID);
addUInt(Die, dwarf::DW_AT_decl_line, 0, Line);
}
void CompileUnit::addVariableAddress(DbgVariable *&DV, DIE *Die,
MachineLocation Location) {
if (DV->variableHasComplexAddress())
addComplexAddress(DV, Die, dwarf::DW_AT_location, Location);
else if (DV->isBlockByrefVariable())
addBlockByrefAddress(DV, Die, dwarf::DW_AT_location, Location);
else
addAddress(Die, dwarf::DW_AT_location, Location);
}
void CompileUnit::addRegisterOp(DIE *TheDie, unsigned Reg) {
const TargetRegisterInfo *RI = Asm->TM.getRegisterInfo();
unsigned DWReg = RI->getDwarfRegNum(Reg, false);
if (DWReg < 32)
addUInt(TheDie, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_reg0 + DWReg);
else {
addUInt(TheDie, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_regx);
addUInt(TheDie, 0, dwarf::DW_FORM_udata, DWReg);
}
}
void CompileUnit::addRegisterOffset(DIE *TheDie, unsigned Reg,
int64_t Offset) {
const TargetRegisterInfo *RI = Asm->TM.getRegisterInfo();
unsigned DWReg = RI->getDwarfRegNum(Reg, false);
const TargetRegisterInfo *TRI = Asm->TM.getRegisterInfo();
if (Reg == TRI->getFrameRegister(*Asm->MF))
addUInt(TheDie, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_fbreg);
else if (DWReg < 32)
addUInt(TheDie, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_breg0 + DWReg);
else {
addUInt(TheDie, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_bregx);
addUInt(TheDie, 0, dwarf::DW_FORM_udata, DWReg);
}
addSInt(TheDie, 0, dwarf::DW_FORM_sdata, Offset);
}
void CompileUnit::addAddress(DIE *Die, unsigned Attribute,
const MachineLocation &Location) {
DIEBlock *Block = new (DIEValueAllocator) DIEBlock();
if (Location.isReg())
addRegisterOp(Block, Location.getReg());
else
addRegisterOffset(Block, Location.getReg(), Location.getOffset());
addBlock(Die, Attribute, 0, Block);
}
void CompileUnit::addComplexAddress(DbgVariable *&DV, DIE *Die,
unsigned Attribute,
const MachineLocation &Location) {
DIEBlock *Block = new (DIEValueAllocator) DIEBlock();
unsigned N = DV->getNumAddrElements();
unsigned i = 0;
if (Location.isReg()) {
if (N >= 2 && DV->getAddrElement(0) == DIBuilder::OpPlus) {
addRegisterOffset(Block, Location.getReg(), DV->getAddrElement(1));
i = 2;
} else
addRegisterOp(Block, Location.getReg());
}
else
addRegisterOffset(Block, Location.getReg(), Location.getOffset());
for (;i < N; ++i) {
uint64_t Element = DV->getAddrElement(i);
if (Element == DIBuilder::OpPlus) {
addUInt(Block, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_plus_uconst);
addUInt(Block, 0, dwarf::DW_FORM_udata, DV->getAddrElement(++i));
} else if (Element == DIBuilder::OpDeref) {
addUInt(Block, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_deref);
} else llvm_unreachable("unknown DIBuilder Opcode");
}
addBlock(Die, Attribute, 0, Block);
}
void CompileUnit::addBlockByrefAddress(DbgVariable *&DV, DIE *Die,
unsigned Attribute,
const MachineLocation &Location) {
DIType Ty = DV->getType();
DIType TmpTy = Ty;
unsigned Tag = Ty.getTag();
bool isPointer = false;
StringRef varName = DV->getName();
if (Tag == dwarf::DW_TAG_pointer_type) {
DIDerivedType DTy = DIDerivedType(Ty);
TmpTy = DTy.getTypeDerivedFrom();
isPointer = true;
}
DICompositeType blockStruct = DICompositeType(TmpTy);
DIArray Fields = blockStruct.getTypeArray();
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);
StringRef fieldName = DT.getName();
if (fieldName == "__forwarding")
forwardingField = Element;
else if (fieldName == varName)
varField = Element;
}
unsigned forwardingFieldOffset =
DIDerivedType(forwardingField).getOffsetInBits() >> 3;
unsigned varFieldOffset =
DIDerivedType(varField).getOffsetInBits() >> 3;
const TargetRegisterInfo *RI = Asm->TM.getRegisterInfo();
unsigned Reg = RI->getDwarfRegNum(Location.getReg(), false);
DIEBlock *Block = new (DIEValueAllocator) DIEBlock();
if (Location.isReg()) {
if (Reg < 32)
addUInt(Block, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_reg0 + Reg);
else {
addUInt(Block, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_regx);
addUInt(Block, 0, dwarf::DW_FORM_udata, Reg);
}
} else {
if (Reg < 32)
addUInt(Block, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_breg0 + Reg);
else {
addUInt(Block, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_bregx);
addUInt(Block, 0, dwarf::DW_FORM_udata, Reg);
}
addUInt(Block, 0, dwarf::DW_FORM_sdata, Location.getOffset());
}
if (isPointer)
addUInt(Block, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_deref);
if (forwardingFieldOffset > 0) {
addUInt(Block, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_plus_uconst);
addUInt(Block, 0, dwarf::DW_FORM_udata, forwardingFieldOffset);
}
addUInt(Block, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_deref);
if (varFieldOffset > 0) {
addUInt(Block, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_plus_uconst);
addUInt(Block, 0, dwarf::DW_FORM_udata, varFieldOffset);
}
addBlock(Die, Attribute, 0, Block);
}
bool CompileUnit::addConstantValue(DIE *Die, const MachineOperand &MO) {
assert (MO.isImm() && "Invalid machine operand!");
DIEBlock *Block = new (DIEValueAllocator) DIEBlock();
unsigned Imm = MO.getImm();
addUInt(Block, 0, dwarf::DW_FORM_udata, Imm);
addBlock(Die, dwarf::DW_AT_const_value, 0, Block);
return true;
}
bool CompileUnit::addConstantFPValue(DIE *Die, const MachineOperand &MO) {
assert (MO.isFPImm() && "Invalid machine operand!");
DIEBlock *Block = new (DIEValueAllocator) DIEBlock();
APFloat FPImm = MO.getFPImm()->getValueAPF();
const APInt FltVal = FPImm.bitcastToAPInt();
const char *FltPtr = (const char*)FltVal.getRawData();
int NumBytes = FltVal.getBitWidth() / 8; bool LittleEndian = Asm->getTargetData().isLittleEndian();
int Incr = (LittleEndian ? 1 : -1);
int Start = (LittleEndian ? 0 : NumBytes - 1);
int Stop = (LittleEndian ? NumBytes : -1);
for (; Start != Stop; Start += Incr)
addUInt(Block, 0, dwarf::DW_FORM_data1,
(unsigned char)0xFF & FltPtr[Start]);
addBlock(Die, dwarf::DW_AT_const_value, 0, Block);
return true;
}
bool CompileUnit::addConstantValue(DIE *Die, ConstantInt *CI,
bool Unsigned) {
if (CI->getBitWidth() <= 64) {
if (Unsigned)
addUInt(Die, dwarf::DW_AT_const_value, dwarf::DW_FORM_udata,
CI->getZExtValue());
else
addSInt(Die, dwarf::DW_AT_const_value, dwarf::DW_FORM_sdata,
CI->getSExtValue());
return true;
}
DIEBlock *Block = new (DIEValueAllocator) DIEBlock();
const APInt Val = CI->getValue();
const char *Ptr = (const char*)Val.getRawData();
int NumBytes = Val.getBitWidth() / 8; bool LittleEndian = Asm->getTargetData().isLittleEndian();
int Incr = (LittleEndian ? 1 : -1);
int Start = (LittleEndian ? 0 : NumBytes - 1);
int Stop = (LittleEndian ? NumBytes : -1);
for (; Start != Stop; Start += Incr)
addUInt(Block, 0, dwarf::DW_FORM_data1,
(unsigned char)0xFF & Ptr[Start]);
addBlock(Die, dwarf::DW_AT_const_value, 0, Block);
return true;
}
void CompileUnit::addTemplateParams(DIE &Buffer, DIArray TParams) {
for (unsigned i = 0, e = TParams.getNumElements(); i != e; ++i) {
DIDescriptor Element = TParams.getElement(i);
if (Element.isTemplateTypeParameter())
Buffer.addChild(getOrCreateTemplateTypeParameterDIE(
DITemplateTypeParameter(Element)));
else if (Element.isTemplateValueParameter())
Buffer.addChild(getOrCreateTemplateValueParameterDIE(
DITemplateValueParameter(Element)));
}
}
void CompileUnit::addToContextOwner(DIE *Die, DIDescriptor Context) {
if (Context.isType()) {
DIE *ContextDIE = getOrCreateTypeDIE(DIType(Context));
ContextDIE->addChild(Die);
} else if (Context.isNameSpace()) {
DIE *ContextDIE = getOrCreateNameSpace(DINameSpace(Context));
ContextDIE->addChild(Die);
} else if (Context.isSubprogram()) {
DIE *ContextDIE = DD->createSubprogramDIE(DISubprogram(Context));
ContextDIE->addChild(Die);
} else if (DIE *ContextDIE = getDIE(Context))
ContextDIE->addChild(Die);
else
addDie(Die);
}
DIE *CompileUnit::getOrCreateTypeDIE(DIType Ty) {
DIE *TyDIE = getDIE(Ty);
if (TyDIE)
return TyDIE;
TyDIE = new DIE(dwarf::DW_TAG_base_type);
insertDIE(Ty, TyDIE);
if (Ty.isBasicType())
constructTypeDIE(*TyDIE, DIBasicType(Ty));
else if (Ty.isCompositeType())
constructTypeDIE(*TyDIE, DICompositeType(Ty));
else {
assert(Ty.isDerivedType() && "Unknown kind of DIType");
constructTypeDIE(*TyDIE, DIDerivedType(Ty));
}
addToContextOwner(TyDIE, Ty.getContext());
return TyDIE;
}
void CompileUnit::addType(DIE *Entity, DIType Ty) {
if (!Ty.Verify())
return;
DIEEntry *Entry = getDIEEntry(Ty);
if (Entry) {
Entity->addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, Entry);
return;
}
DIE *Buffer = getOrCreateTypeDIE(Ty);
Entry = createDIEEntry(Buffer);
insertDIEEntry(Ty, Entry);
Entity->addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, Entry);
}
void CompileUnit::addPubTypes(DISubprogram SP) {
DICompositeType SPTy = SP.getType();
unsigned SPTag = SPTy.getTag();
if (SPTag != dwarf::DW_TAG_subroutine_type)
return;
DIArray Args = SPTy.getTypeArray();
for (unsigned i = 0, e = Args.getNumElements(); i != e; ++i) {
DIType ATy(Args.getElement(i));
if (!ATy.Verify())
continue;
DICompositeType CATy = getDICompositeType(ATy);
if (DIDescriptor(CATy).Verify() && !CATy.getName().empty()
&& !CATy.isForwardDecl()) {
if (DIEEntry *Entry = getDIEEntry(CATy))
addGlobalType(CATy.getName(), Entry->getEntry());
}
}
}
void CompileUnit::constructTypeDIE(DIE &Buffer, DIBasicType BTy) {
StringRef Name = BTy.getName();
Buffer.setTag(dwarf::DW_TAG_base_type);
addUInt(&Buffer, dwarf::DW_AT_encoding, dwarf::DW_FORM_data1,
BTy.getEncoding());
if (!Name.empty())
addString(&Buffer, dwarf::DW_AT_name, dwarf::DW_FORM_string, Name);
uint64_t Size = BTy.getSizeInBits() >> 3;
addUInt(&Buffer, dwarf::DW_AT_byte_size, 0, Size);
}
void CompileUnit::constructTypeDIE(DIE &Buffer, DIDerivedType DTy) {
StringRef Name = DTy.getName();
uint64_t Size = DTy.getSizeInBits() >> 3;
unsigned Tag = DTy.getTag();
if (Tag == dwarf::DW_TAG_inheritance) Tag = dwarf::DW_TAG_reference_type;
Buffer.setTag(Tag);
DIType FromTy = DTy.getTypeDerivedFrom();
addType(&Buffer, FromTy);
if (!Name.empty())
addString(&Buffer, dwarf::DW_AT_name, dwarf::DW_FORM_string, Name);
if (Size)
addUInt(&Buffer, dwarf::DW_AT_byte_size, 0, Size);
if (!DTy.isForwardDecl())
addSourceLine(&Buffer, DTy);
}
void CompileUnit::constructTypeDIE(DIE &Buffer, DICompositeType CTy) {
StringRef Name = CTy.getName();
uint64_t Size = CTy.getSizeInBits() >> 3;
unsigned Tag = CTy.getTag();
Buffer.setTag(Tag);
switch (Tag) {
case dwarf::DW_TAG_vector_type:
case dwarf::DW_TAG_array_type:
constructArrayTypeDIE(Buffer, &CTy);
break;
case dwarf::DW_TAG_enumeration_type: {
DIArray Elements = CTy.getTypeArray();
for (unsigned i = 0, N = Elements.getNumElements(); i < N; ++i) {
DIE *ElemDie = NULL;
DIDescriptor Enum(Elements.getElement(i));
if (Enum.isEnumerator()) {
ElemDie = constructEnumTypeDIE(DIEnumerator(Enum));
Buffer.addChild(ElemDie);
}
}
}
break;
case dwarf::DW_TAG_subroutine_type: {
DIArray Elements = CTy.getTypeArray();
DIDescriptor RTy = Elements.getElement(0);
addType(&Buffer, DIType(RTy));
bool isPrototyped = true;
for (unsigned i = 1, N = Elements.getNumElements(); i < N; ++i) {
DIDescriptor Ty = Elements.getElement(i);
if (Ty.isUnspecifiedParameter()) {
DIE *Arg = new DIE(dwarf::DW_TAG_unspecified_parameters);
Buffer.addChild(Arg);
isPrototyped = false;
} else {
DIE *Arg = new DIE(dwarf::DW_TAG_formal_parameter);
addType(Arg, DIType(Ty));
Buffer.addChild(Arg);
}
}
if (isPrototyped)
addUInt(&Buffer, dwarf::DW_AT_prototyped, dwarf::DW_FORM_flag, 1);
}
break;
case dwarf::DW_TAG_structure_type:
case dwarf::DW_TAG_union_type:
case dwarf::DW_TAG_class_type: {
DIArray Elements = CTy.getTypeArray();
unsigned N = Elements.getNumElements();
if (N == 0)
break;
for (unsigned i = 0; i < N; ++i) {
DIDescriptor Element = Elements.getElement(i);
DIE *ElemDie = NULL;
if (Element.isSubprogram()) {
DISubprogram SP(Element);
ElemDie = DD->createSubprogramDIE(DISubprogram(Element));
if (SP.isProtected())
addUInt(ElemDie, dwarf::DW_AT_accessibility, dwarf::DW_FORM_flag,
dwarf::DW_ACCESS_protected);
else if (SP.isPrivate())
addUInt(ElemDie, dwarf::DW_AT_accessibility, dwarf::DW_FORM_flag,
dwarf::DW_ACCESS_private);
else
addUInt(ElemDie, dwarf::DW_AT_accessibility, dwarf::DW_FORM_flag,
dwarf::DW_ACCESS_public);
if (SP.isExplicit())
addUInt(ElemDie, dwarf::DW_AT_explicit, dwarf::DW_FORM_flag, 1);
}
else if (Element.isVariable()) {
DIVariable DV(Element);
ElemDie = new DIE(dwarf::DW_TAG_variable);
addString(ElemDie, dwarf::DW_AT_name, dwarf::DW_FORM_string,
DV.getName());
addType(ElemDie, DV.getType());
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 if (Element.isDerivedType())
ElemDie = createMemberDIE(DIDerivedType(Element));
else
continue;
Buffer.addChild(ElemDie);
}
if (CTy.isAppleBlockExtension())
addUInt(&Buffer, dwarf::DW_AT_APPLE_block, dwarf::DW_FORM_flag, 1);
unsigned RLang = CTy.getRunTimeLang();
if (RLang)
addUInt(&Buffer, dwarf::DW_AT_APPLE_runtime_class,
dwarf::DW_FORM_data1, RLang);
DICompositeType ContainingType = CTy.getContainingType();
if (DIDescriptor(ContainingType).isCompositeType())
addDIEEntry(&Buffer, dwarf::DW_AT_containing_type, dwarf::DW_FORM_ref4,
getOrCreateTypeDIE(DIType(ContainingType)));
else {
DIDescriptor Context = CTy.getContext();
addToContextOwner(&Buffer, Context);
}
if (CTy.isObjcClassComplete())
addUInt(&Buffer, dwarf::DW_AT_APPLE_objc_complete_type,
dwarf::DW_FORM_flag, 1);
if (Tag == dwarf::DW_TAG_class_type)
addTemplateParams(Buffer, CTy.getTemplateParams());
break;
}
default:
break;
}
if (!Name.empty())
addString(&Buffer, dwarf::DW_AT_name, dwarf::DW_FORM_string, Name);
if (Tag == dwarf::DW_TAG_enumeration_type || Tag == dwarf::DW_TAG_class_type
|| Tag == dwarf::DW_TAG_structure_type || Tag == dwarf::DW_TAG_union_type)
{
if (Size)
addUInt(&Buffer, dwarf::DW_AT_byte_size, 0, Size);
else {
if (CTy.isForwardDecl())
addUInt(&Buffer, dwarf::DW_AT_declaration, dwarf::DW_FORM_flag, 1);
else
addUInt(&Buffer, dwarf::DW_AT_byte_size, 0, 0);
}
if (!CTy.isForwardDecl())
addSourceLine(&Buffer, CTy);
}
}
DIE *
CompileUnit::getOrCreateTemplateTypeParameterDIE(DITemplateTypeParameter TP) {
DIE *ParamDIE = getDIE(TP);
if (ParamDIE)
return ParamDIE;
ParamDIE = new DIE(dwarf::DW_TAG_template_type_parameter);
addType(ParamDIE, TP.getType());
addString(ParamDIE, dwarf::DW_AT_name, dwarf::DW_FORM_string, TP.getName());
return ParamDIE;
}
DIE *
CompileUnit::getOrCreateTemplateValueParameterDIE(DITemplateValueParameter TPV) {
DIE *ParamDIE = getDIE(TPV);
if (ParamDIE)
return ParamDIE;
ParamDIE = new DIE(dwarf::DW_TAG_template_value_parameter);
addType(ParamDIE, TPV.getType());
if (!TPV.getName().empty())
addString(ParamDIE, dwarf::DW_AT_name, dwarf::DW_FORM_string, TPV.getName());
addUInt(ParamDIE, dwarf::DW_AT_const_value, dwarf::DW_FORM_udata,
TPV.getValue());
return ParamDIE;
}
DIE *CompileUnit::getOrCreateNameSpace(DINameSpace NS) {
DIE *NDie = getDIE(NS);
if (NDie)
return NDie;
NDie = new DIE(dwarf::DW_TAG_namespace);
insertDIE(NS, NDie);
if (!NS.getName().empty())
addString(NDie, dwarf::DW_AT_name, dwarf::DW_FORM_string, NS.getName());
addSourceLine(NDie, NS);
addToContextOwner(NDie, NS.getContext());
return NDie;
}
void CompileUnit::constructSubrangeDIE(DIE &Buffer, DISubrange SR, DIE *IndexTy){
DIE *DW_Subrange = new DIE(dwarf::DW_TAG_subrange_type);
addDIEEntry(DW_Subrange, dwarf::DW_AT_type, dwarf::DW_FORM_ref4, IndexTy);
int64_t L = SR.getLo();
int64_t H = SR.getHi();
if (L > H) {
Buffer.addChild(DW_Subrange);
return;
}
if (L)
addSInt(DW_Subrange, dwarf::DW_AT_lower_bound, 0, L);
addSInt(DW_Subrange, dwarf::DW_AT_upper_bound, 0, H);
Buffer.addChild(DW_Subrange);
}
void CompileUnit::constructArrayTypeDIE(DIE &Buffer,
DICompositeType *CTy) {
Buffer.setTag(dwarf::DW_TAG_array_type);
if (CTy->getTag() == dwarf::DW_TAG_vector_type)
addUInt(&Buffer, dwarf::DW_AT_GNU_vector, dwarf::DW_FORM_flag, 1);
addType(&Buffer, CTy->getTypeDerivedFrom());
DIArray Elements = CTy->getTypeArray();
DIE *IdxTy = getIndexTyDie();
if (!IdxTy) {
IdxTy = new DIE(dwarf::DW_TAG_base_type);
addUInt(IdxTy, dwarf::DW_AT_byte_size, 0, sizeof(int32_t));
addUInt(IdxTy, dwarf::DW_AT_encoding, dwarf::DW_FORM_data1,
dwarf::DW_ATE_signed);
addDie(IdxTy);
setIndexTyDie(IdxTy);
}
for (unsigned i = 0, N = Elements.getNumElements(); i < N; ++i) {
DIDescriptor Element = Elements.getElement(i);
if (Element.getTag() == dwarf::DW_TAG_subrange_type)
constructSubrangeDIE(Buffer, DISubrange(Element), IdxTy);
}
}
DIE *CompileUnit::constructEnumTypeDIE(DIEnumerator ETy) {
DIE *Enumerator = new DIE(dwarf::DW_TAG_enumerator);
StringRef Name = ETy.getName();
addString(Enumerator, dwarf::DW_AT_name, dwarf::DW_FORM_string, Name);
int64_t Value = ETy.getEnumValue();
addSInt(Enumerator, dwarf::DW_AT_const_value, dwarf::DW_FORM_sdata, Value);
return Enumerator;
}
DIE *CompileUnit::createMemberDIE(DIDerivedType DT) {
DIE *MemberDie = new DIE(DT.getTag());
StringRef Name = DT.getName();
if (!Name.empty())
addString(MemberDie, dwarf::DW_AT_name, dwarf::DW_FORM_string, Name);
addType(MemberDie, DT.getTypeDerivedFrom());
addSourceLine(MemberDie, DT);
DIEBlock *MemLocationDie = new (DIEValueAllocator) DIEBlock();
addUInt(MemLocationDie, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_plus_uconst);
uint64_t Size = DT.getSizeInBits();
uint64_t FieldSize = DT.getOriginalTypeSize();
if (Size != FieldSize) {
addUInt(MemberDie, dwarf::DW_AT_byte_size, 0, DT.getOriginalTypeSize()>>3);
addUInt(MemberDie, dwarf::DW_AT_bit_size, 0, DT.getSizeInBits());
uint64_t Offset = DT.getOffsetInBits();
uint64_t AlignMask = ~(DT.getAlignInBits() - 1);
uint64_t HiMark = (Offset + FieldSize) & AlignMask;
uint64_t FieldOffset = (HiMark - FieldSize);
Offset -= FieldOffset;
if (Asm->getTargetData().isLittleEndian())
Offset = FieldSize - (Offset + Size);
addUInt(MemberDie, dwarf::DW_AT_bit_offset, 0, Offset);
addUInt(MemLocationDie, 0, dwarf::DW_FORM_udata, FieldOffset >> 3);
} else
addUInt(MemLocationDie, 0, dwarf::DW_FORM_udata, DT.getOffsetInBits() >> 3);
if (DT.getTag() == dwarf::DW_TAG_inheritance
&& DT.isVirtual()) {
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);
addUInt(VBaseLocationDie, 0, dwarf::DW_FORM_udata, DT.getOffsetInBits());
addUInt(VBaseLocationDie, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_minus);
addUInt(VBaseLocationDie, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_deref);
addUInt(VBaseLocationDie, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_plus);
addBlock(MemberDie, dwarf::DW_AT_data_member_location, 0,
VBaseLocationDie);
} else
addBlock(MemberDie, dwarf::DW_AT_data_member_location, 0, MemLocationDie);
if (DT.isProtected())
addUInt(MemberDie, dwarf::DW_AT_accessibility, dwarf::DW_FORM_flag,
dwarf::DW_ACCESS_protected);
else if (DT.isPrivate())
addUInt(MemberDie, dwarf::DW_AT_accessibility, dwarf::DW_FORM_flag,
dwarf::DW_ACCESS_private);
else if (DT.getCompileUnit().getLanguage() == dwarf::DW_LANG_C_plus_plus)
addUInt(MemberDie, dwarf::DW_AT_accessibility, dwarf::DW_FORM_flag,
dwarf::DW_ACCESS_public);
if (DT.isVirtual())
addUInt(MemberDie, dwarf::DW_AT_virtuality, dwarf::DW_FORM_flag,
dwarf::DW_VIRTUALITY_virtual);
StringRef PropertyName = DT.getObjCPropertyName();
if (!PropertyName.empty()) {
addString(MemberDie, dwarf::DW_AT_APPLE_property_name, dwarf::DW_FORM_string,
PropertyName);
StringRef GetterName = DT.getObjCPropertyGetterName();
if (!GetterName.empty())
addString(MemberDie, dwarf::DW_AT_APPLE_property_getter,
dwarf::DW_FORM_string, GetterName);
StringRef SetterName = DT.getObjCPropertySetterName();
if (!SetterName.empty())
addString(MemberDie, dwarf::DW_AT_APPLE_property_setter,
dwarf::DW_FORM_string, SetterName);
unsigned PropertyAttributes = 0;
if (DT.isReadOnlyObjCProperty())
PropertyAttributes |= dwarf::DW_APPLE_PROPERTY_readonly;
if (DT.isReadWriteObjCProperty())
PropertyAttributes |= dwarf::DW_APPLE_PROPERTY_readwrite;
if (DT.isAssignObjCProperty())
PropertyAttributes |= dwarf::DW_APPLE_PROPERTY_assign;
if (DT.isRetainObjCProperty())
PropertyAttributes |= dwarf::DW_APPLE_PROPERTY_retain;
if (DT.isCopyObjCProperty())
PropertyAttributes |= dwarf::DW_APPLE_PROPERTY_copy;
if (DT.isNonAtomicObjCProperty())
PropertyAttributes |= dwarf::DW_APPLE_PROPERTY_nonatomic;
if (PropertyAttributes)
addUInt(MemberDie, dwarf::DW_AT_APPLE_property_attribute, 0,
PropertyAttributes);
}
return MemberDie;
}