DwarfCompileUnit.cpp [plain text]
#define DEBUG_TYPE "dwarfdebug"
#include "DwarfCompileUnit.h"
#include "DwarfAccelTable.h"
#include "DwarfDebug.h"
#include "llvm/ADT/APFloat.h"
#include "llvm/DIBuilder.h"
#include "llvm/IR/Constants.h"
#include "llvm/IR/DataLayout.h"
#include "llvm/IR/GlobalVariable.h"
#include "llvm/IR/Instructions.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Target/Mangler.h"
#include "llvm/Target/TargetFrameLowering.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetRegisterInfo.h"
using namespace llvm;
CompileUnit::CompileUnit(unsigned UID, unsigned L, DIE *D, AsmPrinter *A,
DwarfDebug *DW, DwarfUnits *DWU)
: UniqueID(UID), Language(L), CUDie(D), Asm(A), DD(DW), DU(DWU),
IndexTyDie(0), DebugInfoOffset(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;
}
int64_t CompileUnit::getDefaultLowerBound() const {
switch (Language) {
default:
break;
case dwarf::DW_LANG_C89:
case dwarf::DW_LANG_C99:
case dwarf::DW_LANG_C:
case dwarf::DW_LANG_C_plus_plus:
case dwarf::DW_LANG_ObjC:
case dwarf::DW_LANG_ObjC_plus_plus:
return 0;
case dwarf::DW_LANG_Fortran77:
case dwarf::DW_LANG_Fortran90:
case dwarf::DW_LANG_Fortran95:
return 1;
case dwarf::DW_LANG_Java:
case dwarf::DW_LANG_Python:
case dwarf::DW_LANG_UPC:
case dwarf::DW_LANG_D:
if (dwarf::DWARF_VERSION >= 4)
return 0;
break;
case dwarf::DW_LANG_Ada83:
case dwarf::DW_LANG_Ada95:
case dwarf::DW_LANG_Cobol74:
case dwarf::DW_LANG_Cobol85:
case dwarf::DW_LANG_Modula2:
case dwarf::DW_LANG_Pascal83:
case dwarf::DW_LANG_PLI:
if (dwarf::DWARF_VERSION >= 4)
return 1;
break;
}
return -1;
}
void CompileUnit::addFlag(DIE *Die, unsigned Attribute) {
if (!DD->useDarwinGDBCompat())
Die->addValue(Attribute, dwarf::DW_FORM_flag_present,
DIEIntegerOne);
else
addUInt(Die, Attribute, dwarf::DW_FORM_flag, 1);
}
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, StringRef String) {
if (!DD->useSplitDwarf()) {
MCSymbol *Symb = DU->getStringPoolEntry(String);
DIEValue *Value;
if (Asm->needsRelocationsForDwarfStringPool())
Value = new (DIEValueAllocator) DIELabel(Symb);
else {
MCSymbol *StringPool = DU->getStringPoolSym();
Value = new (DIEValueAllocator) DIEDelta(Symb, StringPool);
}
Die->addValue(Attribute, dwarf::DW_FORM_strp, Value);
} else {
unsigned idx = DU->getStringPoolIndex(String);
DIEValue *Value = new (DIEValueAllocator) DIEInteger(idx);
Die->addValue(Attribute, dwarf::DW_FORM_GNU_str_index, Value);
}
}
void CompileUnit::addLocalString(DIE *Die, unsigned Attribute,
StringRef String) {
MCSymbol *Symb = DU->getStringPoolEntry(String);
DIEValue *Value;
if (Asm->needsRelocationsForDwarfStringPool())
Value = new (DIEValueAllocator) DIELabel(Symb);
else {
MCSymbol *StringPool = DU->getStringPoolSym();
Value = new (DIEValueAllocator) DIEDelta(Symb, StringPool);
}
Die->addValue(Attribute, dwarf::DW_FORM_strp, 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::addLabelAddress(DIE *Die, unsigned Attribute,
MCSymbol *Label) {
if (!DD->useSplitDwarf()) {
if (Label != NULL) {
DIEValue *Value = new (DIEValueAllocator) DIELabel(Label);
Die->addValue(Attribute, dwarf::DW_FORM_addr, Value);
} else {
DIEValue *Value = new (DIEValueAllocator) DIEInteger(0);
Die->addValue(Attribute, dwarf::DW_FORM_addr, Value);
}
} else {
unsigned idx = DU->getAddrPoolIndex(Label);
DIEValue *Value = new (DIEValueAllocator) DIEInteger(idx);
Die->addValue(Attribute, dwarf::DW_FORM_GNU_addr_index, Value);
}
}
void CompileUnit::addOpAddress(DIE *Die, MCSymbol *Sym) {
if (!DD->useSplitDwarf()) {
addUInt(Die, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_addr);
addLabel(Die, 0, dwarf::DW_FORM_udata, Sym);
} else {
unsigned idx = DU->getAddrPoolIndex(Sym);
DIEValue *Value = new (DIEValueAllocator) DIEInteger(idx);
addUInt(Die, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_GNU_addr_index);
Die->addValue(0, dwarf::DW_FORM_GNU_addr_index, 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(),
getUniqueID());
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.getFilename(), G.getDirectory(),
getUniqueID());
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;
unsigned Line = SP.getLineNumber();
if (Line == 0)
return;
unsigned FileID = DD->getOrCreateSourceID(SP.getFilename(),
SP.getDirectory(), getUniqueID());
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)
return;
unsigned FileID = DD->getOrCreateSourceID(Ty.getFilename(),
Ty.getDirectory(), getUniqueID());
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, DIObjCProperty Ty) {
if (!Ty.Verify())
return;
unsigned Line = Ty.getLineNumber();
if (Line == 0)
return;
DIFile File = Ty.getFile();
unsigned FileID = DD->getOrCreateSourceID(File.getFilename(),
File.getDirectory(), getUniqueID());
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(),
getUniqueID());
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) {
if (!Location.isReg())
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;
DIEBlock *Block = new (DIEValueAllocator) DIEBlock();
if (Location.isReg())
addRegisterOp(Block, Location.getReg());
else
addRegisterOffset(Block, Location.getReg(), 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);
}
static bool isTypeSigned(DIType Ty, int *SizeInBits) {
if (Ty.isDerivedType())
return isTypeSigned(DIDerivedType(Ty).getTypeDerivedFrom(), SizeInBits);
if (Ty.isBasicType())
if (DIBasicType(Ty).getEncoding() == dwarf::DW_ATE_signed
|| DIBasicType(Ty).getEncoding() == dwarf::DW_ATE_signed_char) {
*SizeInBits = Ty.getSizeInBits();
return true;
}
return false;
}
bool CompileUnit::addConstantValue(DIE *Die, const MachineOperand &MO,
DIType Ty) {
assert(MO.isImm() && "Invalid machine operand!");
DIEBlock *Block = new (DIEValueAllocator) DIEBlock();
int SizeInBits = -1;
bool SignedConstant = isTypeSigned(Ty, &SizeInBits);
unsigned Form = SignedConstant ? dwarf::DW_FORM_sdata : dwarf::DW_FORM_udata;
switch (SizeInBits) {
case 8: Form = dwarf::DW_FORM_data1; break;
case 16: Form = dwarf::DW_FORM_data2; break;
case 32: Form = dwarf::DW_FORM_data4; break;
case 64: Form = dwarf::DW_FORM_data8; break;
default: break;
}
SignedConstant ? addSInt(Block, 0, Form, MO.getImm())
: addUInt(Block, 0, Form, MO.getImm());
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->getDataLayout().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::addConstantFPValue(DIE *Die, const ConstantFP *CFP) {
return addConstantValue(Die, CFP->getValueAPF().bitcastToAPInt(), false);
}
bool CompileUnit::addConstantValue(DIE *Die, const ConstantInt *CI,
bool Unsigned) {
return addConstantValue(Die, CI->getValue(), Unsigned);
}
bool CompileUnit::addConstantValue(DIE *Die, const APInt &Val,
bool Unsigned) {
unsigned CIBitWidth = Val.getBitWidth();
if (CIBitWidth <= 64) {
unsigned form = 0;
switch (CIBitWidth) {
case 8: form = dwarf::DW_FORM_data1; break;
case 16: form = dwarf::DW_FORM_data2; break;
case 32: form = dwarf::DW_FORM_data4; break;
case 64: form = dwarf::DW_FORM_data8; break;
default:
form = Unsigned ? dwarf::DW_FORM_udata : dwarf::DW_FORM_sdata;
}
if (Unsigned)
addUInt(Die, dwarf::DW_AT_const_value, form, Val.getZExtValue());
else
addSInt(Die, dwarf::DW_AT_const_value, form, Val.getSExtValue());
return true;
}
DIEBlock *Block = new (DIEValueAllocator) DIEBlock();
const uint64_t *Ptr64 = Val.getRawData();
int NumBytes = Val.getBitWidth() / 8; bool LittleEndian = Asm->getDataLayout().isLittleEndian();
for (int i = 0; i < NumBytes; i++) {
uint8_t c;
if (LittleEndian)
c = Ptr64[i / 8] >> (8 * (i & 7));
else
c = Ptr64[(NumBytes - 1 - i) / 8] >> (8 * ((NumBytes - 1 - i) & 7));
addUInt(Block, 0, dwarf::DW_FORM_data1, c);
}
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)));
}
}
DIE *CompileUnit::getOrCreateContextDIE(DIDescriptor Context) {
if (Context.isType())
return getOrCreateTypeDIE(DIType(Context));
else if (Context.isNameSpace())
return getOrCreateNameSpace(DINameSpace(Context));
else if (Context.isSubprogram())
return getOrCreateSubprogramDIE(DISubprogram(Context));
else
return getDIE(Context);
}
void CompileUnit::addToContextOwner(DIE *Die, DIDescriptor Context) {
if (DIE *ContextDIE = getOrCreateContextDIE(Context))
ContextDIE->addChild(Die);
else
addDie(Die);
}
DIE *CompileUnit::getOrCreateTypeDIE(const MDNode *TyNode) {
DIType Ty(TyNode);
if (!Ty.Verify())
return NULL;
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));
}
if (!Ty.getName().empty() && !Ty.isForwardDecl()) {
bool IsImplementation = 0;
if (Ty.isCompositeType()) {
DICompositeType CT(Ty);
IsImplementation = (CT.getRunTimeLang() == 0) ||
CT.isObjcClassComplete();
}
unsigned Flags = IsImplementation ?
DwarfAccelTable::eTypeFlagClassIsImplementation : 0;
addAccelType(Ty.getName(), std::make_pair(TyDIE, Flags));
}
addToContextOwner(TyDIE, Ty.getContext());
return TyDIE;
}
void CompileUnit::addType(DIE *Entity, DIType Ty, unsigned Attribute) {
if (!Ty.Verify())
return;
DIEEntry *Entry = getDIEEntry(Ty);
if (Entry) {
Entity->addValue(Attribute, dwarf::DW_FORM_ref4, Entry);
return;
}
DIE *Buffer = getOrCreateTypeDIE(Ty);
Entry = createDIEEntry(Buffer);
insertDIEEntry(Ty, Entry);
Entity->addValue(Attribute, dwarf::DW_FORM_ref4, Entry);
addGlobalType(Ty);
}
void CompileUnit::addGlobalType(DIType Ty) {
DIDescriptor Context = Ty.getContext();
if (Ty.isCompositeType() && !Ty.getName().empty() && !Ty.isForwardDecl()
&& (!Context || Context.isCompileUnit() || Context.isFile()
|| Context.isNameSpace()))
if (DIEEntry *Entry = getDIEEntry(Ty))
GlobalTypes[Ty.getName()] = Entry->getEntry();
}
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;
addGlobalType(ATy);
}
}
void CompileUnit::constructTypeDIE(DIE &Buffer, DIBasicType BTy) {
StringRef Name = BTy.getName();
if (!Name.empty())
addString(&Buffer, dwarf::DW_AT_name, Name);
if (BTy.getTag() == dwarf::DW_TAG_unspecified_type) {
Buffer.setTag(dwarf::DW_TAG_unspecified_type);
return;
}
Buffer.setTag(dwarf::DW_TAG_base_type);
addUInt(&Buffer, dwarf::DW_AT_encoding, dwarf::DW_FORM_data1,
BTy.getEncoding());
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, Name);
if (Size && Tag != dwarf::DW_TAG_pointer_type)
addUInt(&Buffer, dwarf::DW_AT_byte_size, 0, Size);
if (Tag == dwarf::DW_TAG_ptr_to_member_type)
addDIEEntry(&Buffer, dwarf::DW_AT_containing_type, dwarf::DW_FORM_ref4,
getOrCreateTypeDIE(DTy.getClassType()));
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_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);
}
}
DIType DTy = CTy.getTypeDerivedFrom();
if (DTy.Verify()) {
addType(&Buffer, DTy);
addUInt(&Buffer, dwarf::DW_AT_enum_class, dwarf::DW_FORM_flag, 1);
}
}
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));
if (DIType(Ty).isArtificial())
addFlag(Arg, dwarf::DW_AT_artificial);
Buffer.addChild(Arg);
}
}
if (isPrototyped &&
(Language == dwarf::DW_LANG_C89 ||
Language == dwarf::DW_LANG_C99 ||
Language == dwarf::DW_LANG_ObjC))
addFlag(&Buffer, dwarf::DW_AT_prototyped);
}
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 = getOrCreateSubprogramDIE(DISubprogram(Element));
if (SP.isProtected())
addUInt(ElemDie, dwarf::DW_AT_accessibility, dwarf::DW_FORM_data1,
dwarf::DW_ACCESS_protected);
else if (SP.isPrivate())
addUInt(ElemDie, dwarf::DW_AT_accessibility, dwarf::DW_FORM_data1,
dwarf::DW_ACCESS_private);
else
addUInt(ElemDie, dwarf::DW_AT_accessibility, dwarf::DW_FORM_data1,
dwarf::DW_ACCESS_public);
if (SP.isExplicit())
addFlag(ElemDie, dwarf::DW_AT_explicit);
} else if (Element.isDerivedType()) {
DIDerivedType DDTy(Element);
if (DDTy.getTag() == dwarf::DW_TAG_friend) {
ElemDie = new DIE(dwarf::DW_TAG_friend);
addType(ElemDie, DDTy.getTypeDerivedFrom(), dwarf::DW_AT_friend);
} else if (DDTy.isStaticMember())
ElemDie = createStaticMemberDIE(DDTy);
else
ElemDie = createMemberDIE(DDTy);
} else if (Element.isObjCProperty()) {
DIObjCProperty Property(Element);
ElemDie = new DIE(Property.getTag());
StringRef PropertyName = Property.getObjCPropertyName();
addString(ElemDie, dwarf::DW_AT_APPLE_property_name, PropertyName);
addType(ElemDie, Property.getType());
addSourceLine(ElemDie, Property);
StringRef GetterName = Property.getObjCPropertyGetterName();
if (!GetterName.empty())
addString(ElemDie, dwarf::DW_AT_APPLE_property_getter, GetterName);
StringRef SetterName = Property.getObjCPropertySetterName();
if (!SetterName.empty())
addString(ElemDie, dwarf::DW_AT_APPLE_property_setter, SetterName);
unsigned PropertyAttributes = 0;
if (Property.isReadOnlyObjCProperty())
PropertyAttributes |= dwarf::DW_APPLE_PROPERTY_readonly;
if (Property.isReadWriteObjCProperty())
PropertyAttributes |= dwarf::DW_APPLE_PROPERTY_readwrite;
if (Property.isAssignObjCProperty())
PropertyAttributes |= dwarf::DW_APPLE_PROPERTY_assign;
if (Property.isRetainObjCProperty())
PropertyAttributes |= dwarf::DW_APPLE_PROPERTY_retain;
if (Property.isCopyObjCProperty())
PropertyAttributes |= dwarf::DW_APPLE_PROPERTY_copy;
if (Property.isNonAtomicObjCProperty())
PropertyAttributes |= dwarf::DW_APPLE_PROPERTY_nonatomic;
if (PropertyAttributes)
addUInt(ElemDie, dwarf::DW_AT_APPLE_property_attribute, 0,
PropertyAttributes);
DIEEntry *Entry = getDIEEntry(Element);
if (!Entry) {
Entry = createDIEEntry(ElemDie);
insertDIEEntry(Element, Entry);
}
} else
continue;
Buffer.addChild(ElemDie);
}
if (CTy.isAppleBlockExtension())
addFlag(&Buffer, dwarf::DW_AT_APPLE_block);
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())
addFlag(&Buffer, dwarf::DW_AT_APPLE_objc_complete_type);
if (Tag == dwarf::DW_TAG_class_type ||
Tag == dwarf::DW_TAG_structure_type ||
Tag == dwarf::DW_TAG_union_type)
addTemplateParams(Buffer, CTy.getTemplateParams());
break;
}
default:
break;
}
if (!Name.empty())
addString(&Buffer, dwarf::DW_AT_name, 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_byte_size, 0, 0);
if (CTy.isForwardDecl())
addFlag(&Buffer, dwarf::DW_AT_declaration);
if (!CTy.isForwardDecl())
addSourceLine(&Buffer, CTy);
unsigned RLang = CTy.getRunTimeLang();
if (RLang)
addUInt(&Buffer, dwarf::DW_AT_APPLE_runtime_class,
dwarf::DW_FORM_data1, RLang);
}
}
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, 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, 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, NS.getName());
addAccelNamespace(NS.getName(), NDie);
} else
addAccelNamespace("(anonymous namespace)", NDie);
addSourceLine(NDie, NS);
addToContextOwner(NDie, NS.getContext());
return NDie;
}
static StringRef getRealLinkageName(StringRef LinkageName) {
char One = '\1';
if (LinkageName.startswith(StringRef(&One, 1)))
return LinkageName.substr(1);
return LinkageName;
}
DIE *CompileUnit::getOrCreateSubprogramDIE(DISubprogram SP) {
DIE *SPDie = getDIE(SP);
if (SPDie)
return SPDie;
SPDie = new DIE(dwarf::DW_TAG_subprogram);
insertDIE(SP, SPDie);
DISubprogram SPDecl = SP.getFunctionDeclaration();
DIE *DeclDie = NULL;
if (SPDecl.isSubprogram()) {
DeclDie = getOrCreateSubprogramDIE(SPDecl);
}
addToContextOwner(SPDie, SP.getContext());
addTemplateParams(*SPDie, SP.getTemplateParams());
StringRef LinkageName = SP.getLinkageName();
if (!LinkageName.empty() && DD->useDarwinGDBCompat())
addString(SPDie, dwarf::DW_AT_MIPS_linkage_name,
getRealLinkageName(LinkageName));
if (DeclDie) {
addDIEEntry(SPDie, dwarf::DW_AT_specification, dwarf::DW_FORM_ref4,
DeclDie);
return SPDie;
}
if (!LinkageName.empty() && !DD->useDarwinGDBCompat())
addString(SPDie, dwarf::DW_AT_MIPS_linkage_name,
getRealLinkageName(LinkageName));
if (!SP.getName().empty())
addString(SPDie, dwarf::DW_AT_name, SP.getName());
addSourceLine(SPDie, SP);
if (SP.isPrototyped() &&
(Language == dwarf::DW_LANG_C89 ||
Language == dwarf::DW_LANG_C99 ||
Language == dwarf::DW_LANG_ObjC))
addFlag(SPDie, dwarf::DW_AT_prototyped);
DICompositeType SPTy = SP.getType();
DIArray Args = SPTy.getTypeArray();
unsigned SPTag = SPTy.getTag();
if (Args.getNumElements() == 0 || SPTag != dwarf::DW_TAG_subroutine_type)
addType(SPDie, SPTy);
else
addType(SPDie, DIType(Args.getElement(0)));
unsigned VK = SP.getVirtuality();
if (VK) {
addUInt(SPDie, dwarf::DW_AT_virtuality, dwarf::DW_FORM_data1, VK);
DIEBlock *Block = getDIEBlock();
addUInt(Block, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_constu);
addUInt(Block, 0, dwarf::DW_FORM_udata, SP.getVirtualIndex());
addBlock(SPDie, dwarf::DW_AT_vtable_elem_location, 0, Block);
ContainingTypeMap.insert(std::make_pair(SPDie,
SP.getContainingType()));
}
if (!SP.isDefinition()) {
addFlag(SPDie, dwarf::DW_AT_declaration);
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(Args.getElement(i));
addType(Arg, ATy);
if (ATy.isArtificial())
addFlag(Arg, dwarf::DW_AT_artificial);
SPDie->addChild(Arg);
}
}
if (SP.isArtificial())
addFlag(SPDie, dwarf::DW_AT_artificial);
if (!SP.isLocalToUnit())
addFlag(SPDie, dwarf::DW_AT_external);
if (SP.isOptimized())
addFlag(SPDie, dwarf::DW_AT_APPLE_optimized);
if (unsigned isa = Asm->getISAEncoding()) {
addUInt(SPDie, dwarf::DW_AT_APPLE_isa, dwarf::DW_FORM_flag, isa);
}
return SPDie;
}
static const ConstantExpr *getMergedGlobalExpr(const Value *V) {
const ConstantExpr *CE = dyn_cast_or_null<ConstantExpr>(V);
if (!CE || CE->getNumOperands() != 3 ||
CE->getOpcode() != Instruction::GetElementPtr)
return NULL;
Value *Ptr = CE->getOperand(0);
if (!isa<GlobalValue>(Ptr) ||
!isa<StructType>(cast<PointerType>(Ptr->getType())->getElementType()))
return NULL;
const ConstantInt *CI = dyn_cast_or_null<ConstantInt>(CE->getOperand(1));
if (!CI || !CI->isZero())
return NULL;
if (!isa<ConstantInt>(CE->getOperand(2)))
return NULL;
return CE;
}
void CompileUnit::createGlobalVariableDIE(const MDNode *N) {
if (getDIE(N))
return;
DIGlobalVariable GV(N);
if (!GV.Verify())
return;
DIDescriptor GVContext = GV.getContext();
DIType GTy = GV.getType();
DIE *VariableDIE = NULL;
bool IsStaticMember = false;
DIDerivedType SDMDecl = GV.getStaticDataMemberDeclaration();
if (SDMDecl.Verify()) {
assert(SDMDecl.isStaticMember() && "Expected static member decl");
getOrCreateContextDIE(SDMDecl.getContext());
VariableDIE = getDIE(SDMDecl);
assert(VariableDIE && "Static member decl has no context?");
IsStaticMember = true;
}
if (!VariableDIE) {
VariableDIE = new DIE(GV.getTag());
insertDIE(N, VariableDIE);
addString(VariableDIE, dwarf::DW_AT_name, GV.getDisplayName());
addType(VariableDIE, GTy);
if (!GV.isLocalToUnit())
addFlag(VariableDIE, dwarf::DW_AT_external);
addSourceLine(VariableDIE, GV);
addToContextOwner(VariableDIE, GVContext);
}
bool addToAccelTable = false;
DIE *VariableSpecDIE = NULL;
bool isGlobalVariable = GV.getGlobal() != NULL;
if (isGlobalVariable) {
addToAccelTable = true;
DIEBlock *Block = new (DIEValueAllocator) DIEBlock();
addOpAddress(Block, Asm->Mang->getSymbol(GV.getGlobal()));
if (GVContext && GV.isDefinition() && !GVContext.isCompileUnit() &&
!GVContext.isFile() && !isSubprogramContext(GVContext)) {
VariableSpecDIE = new DIE(dwarf::DW_TAG_variable);
addDIEEntry(VariableSpecDIE, dwarf::DW_AT_specification,
dwarf::DW_FORM_ref4, VariableDIE);
addBlock(VariableSpecDIE, dwarf::DW_AT_location, 0, Block);
if (!SDMDecl.Verify())
addFlag(VariableDIE, dwarf::DW_AT_declaration);
addDie(VariableSpecDIE);
} else {
addBlock(VariableDIE, dwarf::DW_AT_location, 0, Block);
}
StringRef LinkageName = GV.getLinkageName();
if (!LinkageName.empty() && isGlobalVariable) {
addString(IsStaticMember && VariableSpecDIE ?
VariableSpecDIE : VariableDIE, dwarf::DW_AT_MIPS_linkage_name,
getRealLinkageName(LinkageName));
if (IsStaticMember && VariableSpecDIE && DD->useDarwinGDBCompat())
addString(VariableDIE, dwarf::DW_AT_MIPS_linkage_name,
getRealLinkageName(LinkageName));
}
} else if (const ConstantInt *CI =
dyn_cast_or_null<ConstantInt>(GV.getConstant())) {
if (!IsStaticMember)
addConstantValue(VariableDIE, CI, GTy.isUnsignedDIType());
} else if (const ConstantExpr *CE = getMergedGlobalExpr(N->getOperand(11))) {
addToAccelTable = true;
DIEBlock *Block = new (DIEValueAllocator) DIEBlock();
Value *Ptr = CE->getOperand(0);
addOpAddress(Block, Asm->Mang->getSymbol(cast<GlobalValue>(Ptr)));
addUInt(Block, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_constu);
SmallVector<Value*, 3> Idx(CE->op_begin()+1, CE->op_end());
addUInt(Block, 0, dwarf::DW_FORM_udata,
Asm->getDataLayout().getIndexedOffset(Ptr->getType(), Idx));
addUInt(Block, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_plus);
addBlock(VariableDIE, dwarf::DW_AT_location, 0, Block);
}
if (addToAccelTable) {
DIE *AddrDIE = VariableSpecDIE ? VariableSpecDIE : VariableDIE;
addAccelName(GV.getName(), AddrDIE);
if (GV.getLinkageName() != "" && GV.getName() != GV.getLinkageName())
addAccelName(GV.getLinkageName(), AddrDIE);
}
return;
}
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 LowerBound = SR.getLo();
int64_t DefaultLowerBound = getDefaultLowerBound();
int64_t Count = SR.getCount();
if (DefaultLowerBound == -1 || LowerBound != DefaultLowerBound)
addUInt(DW_Subrange, dwarf::DW_AT_lower_bound, 0, LowerBound);
if (Count != -1 && Count != 0)
addUInt(DW_Subrange, dwarf::DW_AT_upper_bound, 0, LowerBound + Count - 1);
Buffer.addChild(DW_Subrange);
}
void CompileUnit::constructArrayTypeDIE(DIE &Buffer,
DICompositeType *CTy) {
Buffer.setTag(dwarf::DW_TAG_array_type);
if (CTy->isVector())
addFlag(&Buffer, dwarf::DW_AT_GNU_vector);
addType(&Buffer, CTy->getTypeDerivedFrom());
DIArray Elements = CTy->getTypeArray();
DIE *IdxTy = getIndexTyDie();
if (!IdxTy) {
IdxTy = new DIE(dwarf::DW_TAG_base_type);
addString(IdxTy, dwarf::DW_AT_name, "int");
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, Name);
int64_t Value = ETy.getEnumValue();
addSInt(Enumerator, dwarf::DW_AT_const_value, dwarf::DW_FORM_sdata, Value);
return Enumerator;
}
void CompileUnit::constructContainingTypeDIEs() {
for (DenseMap<DIE *, const MDNode *>::iterator CI = ContainingTypeMap.begin(),
CE = ContainingTypeMap.end(); CI != CE; ++CI) {
DIE *SPDie = CI->first;
const MDNode *N = CI->second;
if (!N) continue;
DIE *NDie = getDIE(N);
if (!NDie) continue;
addDIEEntry(SPDie, dwarf::DW_AT_containing_type, dwarf::DW_FORM_ref4, NDie);
}
}
DIE *CompileUnit::constructVariableDIE(DbgVariable *DV, bool isScopeAbstract) {
StringRef Name = DV->getName();
unsigned Tag = DV->getTag();
DIE *VariableDie = new DIE(Tag);
DbgVariable *AbsVar = DV->getAbstractVariable();
DIE *AbsDIE = AbsVar ? AbsVar->getDIE() : NULL;
if (AbsDIE)
addDIEEntry(VariableDie, dwarf::DW_AT_abstract_origin,
dwarf::DW_FORM_ref4, AbsDIE);
else {
addString(VariableDie, dwarf::DW_AT_name, Name);
addSourceLine(VariableDie, DV->getVariable());
addType(VariableDie, DV->getType());
}
if (DV->isArtificial())
addFlag(VariableDie, dwarf::DW_AT_artificial);
if (isScopeAbstract) {
DV->setDIE(VariableDie);
return VariableDie;
}
unsigned Offset = DV->getDotDebugLocOffset();
if (Offset != ~0U) {
addLabel(VariableDie, dwarf::DW_AT_location,
dwarf::DW_FORM_data4,
Asm->GetTempSymbol("debug_loc", Offset));
DV->setDIE(VariableDie);
return VariableDie;
}
if (const MachineInstr *DVInsn = DV->getMInsn()) {
bool updated = false;
if (DVInsn->getNumOperands() == 3) {
if (DVInsn->getOperand(0).isReg()) {
const MachineOperand RegOp = DVInsn->getOperand(0);
const TargetRegisterInfo *TRI = Asm->TM.getRegisterInfo();
if (DVInsn->getOperand(1).isImm() &&
TRI->getFrameRegister(*Asm->MF) == RegOp.getReg()) {
unsigned FrameReg = 0;
const TargetFrameLowering *TFI = Asm->TM.getFrameLowering();
int Offset =
TFI->getFrameIndexReference(*Asm->MF,
DVInsn->getOperand(1).getImm(),
FrameReg);
MachineLocation Location(FrameReg, Offset);
addVariableAddress(DV, VariableDie, Location);
} else if (RegOp.getReg())
addVariableAddress(DV, VariableDie,
MachineLocation(RegOp.getReg()));
updated = true;
}
else if (DVInsn->getOperand(0).isImm())
updated =
addConstantValue(VariableDie, DVInsn->getOperand(0),
DV->getType());
else if (DVInsn->getOperand(0).isFPImm())
updated =
addConstantFPValue(VariableDie, DVInsn->getOperand(0));
else if (DVInsn->getOperand(0).isCImm())
updated =
addConstantValue(VariableDie,
DVInsn->getOperand(0).getCImm(),
DV->getType().isUnsignedDIType());
} else {
addVariableAddress(DV, VariableDie,
Asm->getDebugValueLocation(DVInsn));
updated = true;
}
if (!updated) {
delete VariableDie;
return NULL;
}
DV->setDIE(VariableDie);
return VariableDie;
} else {
int FI = DV->getFrameIndex();
if (FI != ~0) {
unsigned FrameReg = 0;
const TargetFrameLowering *TFI = Asm->TM.getFrameLowering();
int Offset =
TFI->getFrameIndexReference(*Asm->MF, FI, FrameReg);
MachineLocation Location(FrameReg, Offset);
addVariableAddress(DV, VariableDie, Location);
}
}
DV->setDIE(VariableDie);
return VariableDie;
}
DIE *CompileUnit::createMemberDIE(DIDerivedType DT) {
DIE *MemberDie = new DIE(DT.getTag());
StringRef Name = DT.getName();
if (!Name.empty())
addString(MemberDie, dwarf::DW_AT_name, 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->getDataLayout().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_data1,
dwarf::DW_ACCESS_protected);
else if (DT.isPrivate())
addUInt(MemberDie, dwarf::DW_AT_accessibility, dwarf::DW_FORM_data1,
dwarf::DW_ACCESS_private);
else
addUInt(MemberDie, dwarf::DW_AT_accessibility, dwarf::DW_FORM_data1,
dwarf::DW_ACCESS_public);
if (DT.isVirtual())
addUInt(MemberDie, dwarf::DW_AT_virtuality, dwarf::DW_FORM_data1,
dwarf::DW_VIRTUALITY_virtual);
if (MDNode *PNode = DT.getObjCProperty())
if (DIEEntry *PropertyDie = getDIEEntry(PNode))
MemberDie->addValue(dwarf::DW_AT_APPLE_property, dwarf::DW_FORM_ref4,
PropertyDie);
if (DT.isArtificial())
addFlag(MemberDie, dwarf::DW_AT_artificial);
StringRef PropertyName = DT.getObjCPropertyName();
if (!PropertyName.empty()) {
addString(MemberDie, dwarf::DW_AT_APPLE_property_name, PropertyName);
StringRef GetterName = DT.getObjCPropertyGetterName();
if (!GetterName.empty())
addString(MemberDie, dwarf::DW_AT_APPLE_property_getter, GetterName);
StringRef SetterName = DT.getObjCPropertySetterName();
if (!SetterName.empty())
addString(MemberDie, dwarf::DW_AT_APPLE_property_setter, 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;
}
DIE *CompileUnit::createStaticMemberDIE(const DIDerivedType DT) {
if (!DT.Verify())
return NULL;
DIE *StaticMemberDIE = new DIE(DT.getTag());
DIType Ty = DT.getTypeDerivedFrom();
addString(StaticMemberDIE, dwarf::DW_AT_name, DT.getName());
addType(StaticMemberDIE, Ty);
addSourceLine(StaticMemberDIE, DT);
addFlag(StaticMemberDIE, dwarf::DW_AT_external);
addFlag(StaticMemberDIE, dwarf::DW_AT_declaration);
if (DT.isProtected())
addUInt(StaticMemberDIE, dwarf::DW_AT_accessibility, dwarf::DW_FORM_data1,
dwarf::DW_ACCESS_protected);
else if (DT.isPrivate())
addUInt(StaticMemberDIE, dwarf::DW_AT_accessibility, dwarf::DW_FORM_data1,
dwarf::DW_ACCESS_private);
else
addUInt(StaticMemberDIE, dwarf::DW_AT_accessibility, dwarf::DW_FORM_data1,
dwarf::DW_ACCESS_public);
if (const ConstantInt *CI = dyn_cast_or_null<ConstantInt>(DT.getConstant()))
addConstantValue(StaticMemberDIE, CI, Ty.isUnsignedDIType());
if (const ConstantFP *CFP = dyn_cast_or_null<ConstantFP>(DT.getConstant()))
addConstantFPValue(StaticMemberDIE, CFP);
insertDIE(DT, StaticMemberDIE);
return StaticMemberDIE;
}