#include "llvm/IR/DataLayout.h"
#include "llvm/IR/GlobalVariable.h"
#include "llvm/IR/Instructions.h"
+#include "llvm/MC/MCSection.h"
+#include "llvm/MC/MCStreamer.h"
#include "llvm/Target/Mangler.h"
#include "llvm/Target/TargetFrameLowering.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetLoweringObjectFile.h"
#include "llvm/Target/TargetRegisterInfo.h"
+#include "llvm/Support/CommandLine.h"
using namespace llvm;
+static cl::opt<bool> GenerateTypeUnits("generate-type-units", cl::Hidden,
+ cl::desc("Generate DWARF4 type units."),
+ cl::init(false));
+
/// CompileUnit - Compile unit constructor.
-CompileUnit::CompileUnit(unsigned UID, DIE *D, const MDNode *N, AsmPrinter *A,
- DwarfDebug *DW, DwarfUnits *DWU)
- : UniqueID(UID), Node(N), CUDie(D), Asm(A), DD(DW), DU(DWU), IndexTyDie(0) {
+CompileUnit::CompileUnit(unsigned UID, DIE *D, DICompileUnit Node,
+ AsmPrinter *A, DwarfDebug *DW, DwarfUnits *DWU)
+ : UniqueID(UID), Node(Node), Language(Node.getLanguage()), CUDie(D),
+ DebugInfoOffset(0), Asm(A), DD(DW), DU(DWU), IndexTyDie(0) {
+ DIEIntegerOne = new (DIEValueAllocator) DIEInteger(1);
+ insertDIE(Node, D);
+}
+
+CompileUnit::CompileUnit(unsigned UID, DIE *D, uint16_t Language, AsmPrinter *A,
+ DwarfDebug *DD, DwarfUnits *DU)
+ : UniqueID(UID), Node(NULL), Language(Language), CUDie(D),
+ DebugInfoOffset(0), Asm(A), DD(DD), DU(DU), IndexTyDie(0) {
DIEIntegerOne = new (DIEValueAllocator) DIEInteger(1);
- insertDIE(N, D);
}
/// ~CompileUnit - Destructor for compile unit.
/// getDefaultLowerBound - Return the default lower bound for an array. If the
/// DWARF version doesn't handle the language, return -1.
int64_t CompileUnit::getDefaultLowerBound() const {
- switch (DICompileUnit(Node).getLanguage()) {
+ switch (getLanguage()) {
default:
break;
return -1;
}
+/// Check whether the DIE for this MDNode can be shared across CUs.
+static bool isShareableAcrossCUs(DIDescriptor D) {
+ // When the MDNode can be part of the type system, the DIE can be shared
+ // across CUs.
+ // Combining type units and cross-CU DIE sharing is lower value (since
+ // cross-CU DIE sharing is used in LTO and removes type redundancy at that
+ // level already) but may be implementable for some value in projects
+ // building multiple independent libraries with LTO and then linking those
+ // together.
+ return (D.isType() ||
+ (D.isSubprogram() && !DISubprogram(D).isDefinition())) &&
+ !GenerateTypeUnits;
+}
+
+/// getDIE - Returns the debug information entry map slot for the
+/// specified debug variable. We delegate the request to DwarfDebug
+/// when the DIE for this MDNode can be shared across CUs. The mappings
+/// will be kept in DwarfDebug for shareable DIEs.
+DIE *CompileUnit::getDIE(DIDescriptor D) const {
+ if (isShareableAcrossCUs(D))
+ return DD->getDIE(D);
+ return MDNodeToDieMap.lookup(D);
+}
+
+/// insertDIE - Insert DIE into the map. We delegate the request to DwarfDebug
+/// when the DIE for this MDNode can be shared across CUs. The mappings
+/// will be kept in DwarfDebug for shareable DIEs.
+void CompileUnit::insertDIE(DIDescriptor Desc, DIE *D) {
+ if (isShareableAcrossCUs(Desc)) {
+ DD->insertDIE(Desc, D);
+ return;
+ }
+ MDNodeToDieMap.insert(std::make_pair(Desc, D));
+}
+
/// addFlag - Add a flag that is true.
-void CompileUnit::addFlag(DIE *Die, uint16_t Attribute) {
+void CompileUnit::addFlag(DIE *Die, dwarf::Attribute Attribute) {
if (DD->getDwarfVersion() >= 4)
Die->addValue(Attribute, dwarf::DW_FORM_flag_present, DIEIntegerOne);
else
/// addUInt - Add an unsigned integer attribute data and value.
///
-void CompileUnit::addUInt(DIE *Die, uint16_t Attribute, uint16_t Form,
- uint64_t Integer) {
+void CompileUnit::addUInt(DIE *Die, dwarf::Attribute Attribute,
+ Optional<dwarf::Form> 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);
+ Die->addValue(Attribute, *Form, Value);
+}
+
+void CompileUnit::addUInt(DIEBlock *Block, dwarf::Form Form, uint64_t Integer) {
+ addUInt(Block, (dwarf::Attribute)0, Form, Integer);
}
/// addSInt - Add an signed integer attribute data and value.
///
-void CompileUnit::addSInt(DIE *Die, uint16_t Attribute, uint16_t Form,
- int64_t Integer) {
+void CompileUnit::addSInt(DIE *Die, dwarf::Attribute Attribute,
+ Optional<dwarf::Form> Form, int64_t Integer) {
if (!Form)
Form = DIEInteger::BestForm(true, Integer);
DIEValue *Value = new (DIEValueAllocator) DIEInteger(Integer);
- Die->addValue(Attribute, Form, Value);
+ Die->addValue(Attribute, *Form, Value);
+}
+
+void CompileUnit::addSInt(DIEBlock *Die, Optional<dwarf::Form> Form,
+ int64_t Integer) {
+ addSInt(Die, (dwarf::Attribute)0, Form, Integer);
}
/// addString - Add a string attribute data and value. We always emit a
/// more predictable sizes. In the case of split dwarf we emit an index
/// into another table which gets us the static offset into the string
/// table.
-void CompileUnit::addString(DIE *Die, uint16_t Attribute, StringRef String) {
+void CompileUnit::addString(DIE *Die, dwarf::Attribute Attribute,
+ StringRef String) {
DIEValue *Value;
- uint16_t Form;
+ dwarf::Form Form;
if (!DD->useSplitDwarf()) {
MCSymbol *Symb = DU->getStringPoolEntry(String);
if (Asm->needsRelocationsForDwarfStringPool())
/// addLocalString - Add a string attribute data and value. This is guaranteed
/// to be in the local string pool instead of indirected.
-void CompileUnit::addLocalString(DIE *Die, uint16_t Attribute,
+void CompileUnit::addLocalString(DIE *Die, dwarf::Attribute Attribute,
StringRef String) {
MCSymbol *Symb = DU->getStringPoolEntry(String);
DIEValue *Value;
/// addExpr - Add a Dwarf expression attribute data and value.
///
-void CompileUnit::addExpr(DIE *Die, uint16_t Attribute, uint16_t Form,
- const MCExpr *Expr) {
+void CompileUnit::addExpr(DIEBlock *Die, dwarf::Form Form, const MCExpr *Expr) {
DIEValue *Value = new (DIEValueAllocator) DIEExpr(Expr);
- Die->addValue(Attribute, Form, Value);
+ Die->addValue((dwarf::Attribute)0, Form, Value);
}
/// addLabel - Add a Dwarf label attribute data and value.
///
-void CompileUnit::addLabel(DIE *Die, uint16_t Attribute, uint16_t Form,
- const MCSymbol *Label) {
+void CompileUnit::addLabel(DIE *Die, dwarf::Attribute Attribute,
+ dwarf::Form Form, const MCSymbol *Label) {
DIEValue *Value = new (DIEValueAllocator) DIELabel(Label);
Die->addValue(Attribute, Form, Value);
}
+void CompileUnit::addLabel(DIEBlock *Die, dwarf::Form Form,
+ const MCSymbol *Label) {
+ addLabel(Die, (dwarf::Attribute)0, Form, Label);
+}
+
+/// addSectionLabel - Add a Dwarf section label attribute data and value.
+///
+void CompileUnit::addSectionLabel(DIE *Die, dwarf::Attribute Attribute,
+ const MCSymbol *Label) {
+ if (DD->getDwarfVersion() >= 4)
+ addLabel(Die, Attribute, dwarf::DW_FORM_sec_offset, Label);
+ else
+ addLabel(Die, Attribute, dwarf::DW_FORM_data4, Label);
+}
+
+/// addSectionOffset - Add an offset into a section attribute data and value.
+///
+void CompileUnit::addSectionOffset(DIE *Die, dwarf::Attribute Attribute,
+ uint64_t Integer) {
+ if (DD->getDwarfVersion() >= 4)
+ addUInt(Die, Attribute, dwarf::DW_FORM_sec_offset, Integer);
+ else
+ addUInt(Die, Attribute, dwarf::DW_FORM_data4, Integer);
+}
+
/// addLabelAddress - Add a dwarf label attribute data and value using
/// DW_FORM_addr or DW_FORM_GNU_addr_index.
///
-void CompileUnit::addLabelAddress(DIE *Die, uint16_t Attribute,
+void CompileUnit::addLabelAddress(DIE *Die, dwarf::Attribute Attribute,
MCSymbol *Label) {
if (Label)
DD->addArangeLabel(SymbolCU(this, Label));
/// addOpAddress - Add a dwarf op address data and value using the
/// form given and an op of either DW_FORM_addr or DW_FORM_GNU_addr_index.
///
-void CompileUnit::addOpAddress(DIE *Die, const MCSymbol *Sym) {
+void CompileUnit::addOpAddress(DIEBlock *Die, const MCSymbol *Sym) {
DD->addArangeLabel(SymbolCU(this, Sym));
if (!DD->useSplitDwarf()) {
- addUInt(Die, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_addr);
- addLabel(Die, 0, dwarf::DW_FORM_udata, Sym);
+ addUInt(Die, dwarf::DW_FORM_data1, dwarf::DW_OP_addr);
+ addLabel(Die, dwarf::DW_FORM_udata, Sym);
} else {
- addUInt(Die, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_GNU_addr_index);
- addUInt(Die, 0, dwarf::DW_FORM_GNU_addr_index, DU->getAddrPoolIndex(Sym));
+ addUInt(Die, dwarf::DW_FORM_data1, dwarf::DW_OP_GNU_addr_index);
+ addUInt(Die, dwarf::DW_FORM_GNU_addr_index, DU->getAddrPoolIndex(Sym));
}
}
-/// addDelta - Add a label delta attribute data and value.
+/// addSectionDelta - Add a section label delta attribute data and value.
///
-void CompileUnit::addDelta(DIE *Die, uint16_t Attribute, uint16_t Form,
- const MCSymbol *Hi, const MCSymbol *Lo) {
+void CompileUnit::addSectionDelta(DIE *Die, dwarf::Attribute Attribute,
+ const MCSymbol *Hi, const MCSymbol *Lo) {
DIEValue *Value = new (DIEValueAllocator) DIEDelta(Hi, Lo);
- Die->addValue(Attribute, Form, Value);
+ if (DD->getDwarfVersion() >= 4)
+ Die->addValue(Attribute, dwarf::DW_FORM_sec_offset, Value);
+ else
+ Die->addValue(Attribute, dwarf::DW_FORM_data4, Value);
}
/// addDIEEntry - Add a DIE attribute data and value.
///
-void CompileUnit::addDIEEntry(DIE *Die, uint16_t Attribute, DIE *Entry) {
- // We currently only use ref4.
- Die->addValue(Attribute, dwarf::DW_FORM_ref4, createDIEEntry(Entry));
+void CompileUnit::addDIEEntry(DIE *Die, dwarf::Attribute Attribute,
+ DIE *Entry) {
+ addDIEEntry(Die, Attribute, createDIEEntry(Entry));
+}
+
+void CompileUnit::addDIEEntry(DIE *Die, dwarf::Attribute Attribute,
+ DIEEntry *Entry) {
+ const DIE *DieCU = Die->getUnitOrNull();
+ const DIE *EntryCU = Entry->getEntry()->getUnitOrNull();
+ if (!DieCU)
+ // We assume that Die belongs to this CU, if it is not linked to any CU yet.
+ DieCU = getCUDie();
+ if (!EntryCU)
+ EntryCU = getCUDie();
+ Die->addValue(Attribute, EntryCU == DieCU ? dwarf::DW_FORM_ref4
+ : dwarf::DW_FORM_ref_addr,
+ Entry);
+}
+
+/// Create a DIE with the given Tag, add the DIE to its parent, and
+/// call insertDIE if MD is not null.
+DIE *CompileUnit::createAndAddDIE(unsigned Tag, DIE &Parent, DIDescriptor N) {
+ DIE *Die = new DIE(Tag);
+ Parent.addChild(Die);
+ if (N)
+ insertDIE(N, Die);
+ return Die;
}
/// addBlock - Add block data.
///
-void CompileUnit::addBlock(DIE *Die, uint16_t Attribute, uint16_t Form,
+void CompileUnit::addBlock(DIE *Die, dwarf::Attribute Attribute,
DIEBlock *Block) {
Block->ComputeSize(Asm);
DIEBlocks.push_back(Block); // Memoize so we can call the destructor later on.
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);
+ addUInt(Die, dwarf::DW_AT_decl_file, None, FileID);
+ addUInt(Die, dwarf::DW_AT_decl_line, None, Line);
}
/// addSourceLine - Add location information to specified debug information
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);
+ addUInt(Die, dwarf::DW_AT_decl_file, None, FileID);
+ addUInt(Die, dwarf::DW_AT_decl_line, None, Line);
}
/// addSourceLine - Add location information to specified debug information
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);
+ addUInt(Die, dwarf::DW_AT_decl_file, None, FileID);
+ addUInt(Die, dwarf::DW_AT_decl_line, None, Line);
}
/// addSourceLine - Add location information to specified debug information
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);
+ addUInt(Die, dwarf::DW_AT_decl_file, None, FileID);
+ addUInt(Die, dwarf::DW_AT_decl_line, None, Line);
}
/// addSourceLine - Add location information to specified debug information
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);
+ addUInt(Die, dwarf::DW_AT_decl_file, None, FileID);
+ addUInt(Die, dwarf::DW_AT_decl_line, None, Line);
}
/// addSourceLine - Add location information to specified debug information
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);
+ addUInt(Die, dwarf::DW_AT_decl_file, None, FileID);
+ addUInt(Die, dwarf::DW_AT_decl_line, None, Line);
}
/// addVariableAddress - Add DW_AT_location attribute for a
}
/// addRegisterOp - Add register operand.
-void CompileUnit::addRegisterOp(DIE *TheDie, unsigned Reg) {
+void CompileUnit::addRegisterOp(DIEBlock *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);
+ addUInt(TheDie, 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);
+ addUInt(TheDie, dwarf::DW_FORM_data1, dwarf::DW_OP_regx);
+ addUInt(TheDie, dwarf::DW_FORM_udata, DWReg);
}
}
/// addRegisterOffset - Add register offset.
-void CompileUnit::addRegisterOffset(DIE *TheDie, unsigned Reg, int64_t Offset) {
+void CompileUnit::addRegisterOffset(DIEBlock *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))
// If variable offset is based in frame register then use fbreg.
- addUInt(TheDie, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_fbreg);
+ addUInt(TheDie, dwarf::DW_FORM_data1, dwarf::DW_OP_fbreg);
else if (DWReg < 32)
- addUInt(TheDie, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_breg0 + DWReg);
+ addUInt(TheDie, 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);
+ addUInt(TheDie, dwarf::DW_FORM_data1, dwarf::DW_OP_bregx);
+ addUInt(TheDie, dwarf::DW_FORM_udata, DWReg);
}
- addSInt(TheDie, 0, dwarf::DW_FORM_sdata, Offset);
+ addSInt(TheDie, dwarf::DW_FORM_sdata, Offset);
}
/// addAddress - Add an address attribute to a die based on the location
/// provided.
-void CompileUnit::addAddress(DIE *Die, uint16_t Attribute,
+void CompileUnit::addAddress(DIE *Die, dwarf::Attribute Attribute,
const MachineLocation &Location, bool Indirect) {
DIEBlock *Block = new (DIEValueAllocator) DIEBlock();
else {
addRegisterOffset(Block, Location.getReg(), Location.getOffset());
if (Indirect && !Location.isReg()) {
- addUInt(Block, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_deref);
+ addUInt(Block, dwarf::DW_FORM_data1, dwarf::DW_OP_deref);
}
}
// Now attach the location information to the DIE.
- addBlock(Die, Attribute, 0, Block);
+ addBlock(Die, Attribute, Block);
}
/// addComplexAddress - Start with the address based on the location provided,
/// the starting location. Add the DWARF information to the die.
///
void CompileUnit::addComplexAddress(const DbgVariable &DV, DIE *Die,
- uint16_t Attribute,
+ dwarf::Attribute Attribute,
const MachineLocation &Location) {
DIEBlock *Block = new (DIEValueAllocator) DIEBlock();
unsigned N = DV.getNumAddrElements();
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));
+ addUInt(Block, dwarf::DW_FORM_data1, dwarf::DW_OP_plus_uconst);
+ addUInt(Block, 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);
+ addUInt(Block, dwarf::DW_FORM_data1, dwarf::DW_OP_deref);
} else
llvm_unreachable("unknown DIBuilder Opcode");
}
// Now attach the location information to the DIE.
- addBlock(Die, Attribute, 0, Block);
+ addBlock(Die, Attribute, Block);
}
/* Byref variables, in Blocks, are declared by the programmer as "SomeType
/// more information, read large comment just above here.
///
void CompileUnit::addBlockByrefAddress(const DbgVariable &DV, DIE *Die,
- uint16_t Attribute,
+ dwarf::Attribute Attribute,
const MachineLocation &Location) {
DIType Ty = DV.getType();
DIType TmpTy = Ty;
StringRef varName = DV.getName();
if (Tag == dwarf::DW_TAG_pointer_type) {
- DIDerivedType DTy = DIDerivedType(Ty);
+ DIDerivedType DTy(Ty);
TmpTy = resolve(DTy.getTypeDerivedFrom());
isPointer = true;
}
- DICompositeType blockStruct = DICompositeType(TmpTy);
+ DICompositeType blockStruct(TmpTy);
// Find the __forwarding field and the variable field in the __Block_byref
// struct.
DIArray Fields = blockStruct.getTypeArray();
- DIDescriptor varField = DIDescriptor();
- DIDescriptor forwardingField = DIDescriptor();
+ DIDerivedType varField;
+ DIDerivedType forwardingField;
for (unsigned i = 0, N = Fields.getNumElements(); i < N; ++i) {
- DIDescriptor Element = Fields.getElement(i);
- DIDerivedType DT = DIDerivedType(Element);
+ DIDerivedType DT(Fields.getElement(i));
StringRef fieldName = DT.getName();
if (fieldName == "__forwarding")
- forwardingField = Element;
+ forwardingField = DT;
else if (fieldName == varName)
- varField = Element;
+ varField = DT;
}
// Get the offsets for the forwarding field and the variable field.
- unsigned forwardingFieldOffset =
- DIDerivedType(forwardingField).getOffsetInBits() >> 3;
- unsigned varFieldOffset = DIDerivedType(varField).getOffsetInBits() >> 3;
+ unsigned forwardingFieldOffset = forwardingField.getOffsetInBits() >> 3;
+ unsigned varFieldOffset = varField.getOffsetInBits() >> 2;
// Decode the original location, and use that as the start of the byref
// variable's location.
// If we started with a pointer to the __Block_byref... struct, then
// the first thing we need to do is dereference the pointer (DW_OP_deref).
if (isPointer)
- addUInt(Block, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_deref);
+ addUInt(Block, dwarf::DW_FORM_data1, dwarf::DW_OP_deref);
// Next add the offset for the '__forwarding' field:
// DW_OP_plus_uconst ForwardingFieldOffset. Note there's no point in
// adding the offset if it's 0.
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, dwarf::DW_FORM_data1, dwarf::DW_OP_plus_uconst);
+ addUInt(Block, dwarf::DW_FORM_udata, forwardingFieldOffset);
}
// Now dereference the __forwarding field to get to the real __Block_byref
// struct: DW_OP_deref.
- addUInt(Block, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_deref);
+ addUInt(Block, dwarf::DW_FORM_data1, dwarf::DW_OP_deref);
// Now that we've got the real __Block_byref... struct, add the offset
// for the variable's field to get to the location of the actual variable:
// DW_OP_plus_uconst varFieldOffset. Again, don't add if it's 0.
if (varFieldOffset > 0) {
- addUInt(Block, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_plus_uconst);
- addUInt(Block, 0, dwarf::DW_FORM_udata, varFieldOffset);
+ addUInt(Block, dwarf::DW_FORM_data1, dwarf::DW_OP_plus_uconst);
+ addUInt(Block, dwarf::DW_FORM_udata, varFieldOffset);
}
// Now attach the location information to the DIE.
- addBlock(Die, Attribute, 0, Block);
+ addBlock(Die, Attribute, Block);
}
/// isTypeSigned - Return true if the type is signed.
assert(MO.isImm() && "Invalid machine operand!");
int SizeInBits = -1;
bool SignedConstant = isTypeSigned(DD, Ty, &SizeInBits);
- uint16_t Form;
+ dwarf::Form Form;
// If we're a signed constant definitely use sdata.
if (SignedConstant) {
// Output the constant to DWARF one byte at a time.
for (; Start != Stop; Start += Incr)
- addUInt(Block, 0, dwarf::DW_FORM_data1,
- (unsigned char)0xFF & FltPtr[Start]);
+ addUInt(Block, dwarf::DW_FORM_data1, (unsigned char)0xFF & FltPtr[Start]);
- addBlock(Die, dwarf::DW_AT_const_value, 0, Block);
+ addBlock(Die, dwarf::DW_AT_const_value, Block);
}
/// addConstantFPValue - Add constant value entry in variable DIE.
}
// Else use data for now unless it's larger than we can deal with.
- uint16_t Form;
+ dwarf::Form Form;
switch (CIBitWidth) {
case 8:
Form = dwarf::DW_FORM_data1;
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);
+ addUInt(Block, dwarf::DW_FORM_data1, c);
}
- addBlock(Die, dwarf::DW_AT_const_value, 0, Block);
+ addBlock(Die, dwarf::DW_AT_const_value, Block);
}
/// addTemplateParams - Add template parameters into buffer.
for (unsigned i = 0, e = TParams.getNumElements(); i != e; ++i) {
DIDescriptor Element = TParams.getElement(i);
if (Element.isTemplateTypeParameter())
- getOrCreateTemplateTypeParameterDIE(DITemplateTypeParameter(Element),
- Buffer);
+ constructTemplateTypeParameterDIE(Buffer,
+ DITemplateTypeParameter(Element));
else if (Element.isTemplateValueParameter())
- getOrCreateTemplateValueParameterDIE(DITemplateValueParameter(Element),
- Buffer);
+ constructTemplateValueParameterDIE(Buffer,
+ DITemplateValueParameter(Element));
}
}
/// getOrCreateContextDIE - Get context owner's DIE.
DIE *CompileUnit::getOrCreateContextDIE(DIScope Context) {
+ if (!Context || Context.isFile())
+ return getCUDie();
if (Context.isType())
return getOrCreateTypeDIE(DIType(Context));
- else if (Context.isNameSpace())
+ if (Context.isNameSpace())
return getOrCreateNameSpace(DINameSpace(Context));
- else if (Context.isSubprogram())
+ if (Context.isSubprogram())
return getOrCreateSubprogramDIE(DISubprogram(Context));
- else
- return getDIE(Context);
+ return getDIE(Context);
}
-/// addToContextOwner - Add Die into the list of its context owner's children.
-void CompileUnit::addToContextOwner(DIE *Die, DIScope Context) {
- assert(!Die->getParent());
- if (DIE *ContextDIE = getOrCreateContextDIE(Context)) {
- if (Die->getParent()) {
- // While creating the context, if this is a type member, we will have
- // added the child to the context already.
- assert(Die->getParent() == ContextDIE);
- return;
- }
- ContextDIE->addChild(Die);
- } else
- addDie(Die);
+DIE *CompileUnit::createTypeDIE(DICompositeType Ty) {
+ DIE *ContextDIE = getOrCreateContextDIE(resolve(Ty.getContext()));
+
+ DIE *TyDIE = getDIE(Ty);
+ if (TyDIE)
+ return TyDIE;
+
+ // Create new type.
+ TyDIE = createAndAddDIE(Ty.getTag(), *ContextDIE, Ty);
+
+ constructTypeDIEImpl(*TyDIE, Ty);
+
+ updateAcceleratorTables(Ty, TyDIE);
+ return TyDIE;
}
/// getOrCreateTypeDIE - Find existing DIE or create new DIE for the
/// given DIType.
DIE *CompileUnit::getOrCreateTypeDIE(const MDNode *TyNode) {
- DIType Ty(TyNode);
- if (!Ty.isType())
+ if (!TyNode)
return NULL;
+
+ DIType Ty(TyNode);
+ assert(Ty.isType());
+
+ // Construct the context before querying for the existence of the DIE in case
+ // such construction creates the DIE.
+ DIE *ContextDIE = getOrCreateContextDIE(resolve(Ty.getContext()));
+ assert(ContextDIE);
+
DIE *TyDIE = getDIE(Ty);
if (TyDIE)
return TyDIE;
// Create new type.
- TyDIE = new DIE(Ty.getTag());
- insertDIE(Ty, TyDIE);
+ TyDIE = createAndAddDIE(Ty.getTag(), *ContextDIE, Ty);
+
if (Ty.isBasicType())
constructTypeDIE(*TyDIE, DIBasicType(Ty));
else if (Ty.isCompositeType())
assert(Ty.isDerivedType() && "Unknown kind of DIType");
constructTypeDIE(*TyDIE, DIDerivedType(Ty));
}
- // If this is a named finished type then include it in the list of types
- // for the accelerator tables.
+
+ updateAcceleratorTables(Ty, TyDIE);
+
+ return TyDIE;
+}
+
+void CompileUnit::updateAcceleratorTables(DIType Ty, const DIE *TyDIE) {
if (!Ty.getName().empty() && !Ty.isForwardDecl()) {
bool IsImplementation = 0;
if (Ty.isCompositeType()) {
unsigned Flags = IsImplementation ? dwarf::DW_FLAG_type_implementation : 0;
addAccelType(Ty.getName(), std::make_pair(TyDIE, Flags));
}
-
- addToContextOwner(TyDIE, resolve(Ty.getContext()));
- return TyDIE;
}
/// addType - Add a new type attribute to the specified entity.
-void CompileUnit::addType(DIE *Entity, DIType Ty, uint16_t Attribute) {
+void CompileUnit::addType(DIE *Entity, DIType Ty, dwarf::Attribute Attribute) {
assert(Ty && "Trying to add a type that doesn't exist?");
// Check for pre-existence.
DIEEntry *Entry = getDIEEntry(Ty);
// If it exists then use the existing value.
if (Entry) {
- Entity->addValue(Attribute, dwarf::DW_FORM_ref4, Entry);
+ addDIEEntry(Entity, Attribute, Entry);
return;
}
// Set up proxy.
Entry = createDIEEntry(Buffer);
insertDIEEntry(Ty, Entry);
- Entity->addValue(Attribute, dwarf::DW_FORM_ref4, Entry);
+ addDIEEntry(Entity, Attribute, Entry);
// If this is a complete composite type then include it in the
// list of global types.
// DIE to the proper table while ensuring that the name that we're going
// to reference is in the string table. We do this since the names we
// add may not only be identical to the names in the DIE.
-void CompileUnit::addAccelName(StringRef Name, DIE *Die) {
+void CompileUnit::addAccelName(StringRef Name, const DIE *Die) {
DU->getStringPoolEntry(Name);
- std::vector<DIE *> &DIEs = AccelNames[Name];
+ std::vector<const DIE *> &DIEs = AccelNames[Name];
DIEs.push_back(Die);
}
-void CompileUnit::addAccelObjC(StringRef Name, DIE *Die) {
+void CompileUnit::addAccelObjC(StringRef Name, const DIE *Die) {
DU->getStringPoolEntry(Name);
- std::vector<DIE *> &DIEs = AccelObjC[Name];
+ std::vector<const DIE *> &DIEs = AccelObjC[Name];
DIEs.push_back(Die);
}
-void CompileUnit::addAccelNamespace(StringRef Name, DIE *Die) {
+void CompileUnit::addAccelNamespace(StringRef Name, const DIE *Die) {
DU->getStringPoolEntry(Name);
- std::vector<DIE *> &DIEs = AccelNamespace[Name];
+ std::vector<const DIE *> &DIEs = AccelNamespace[Name];
DIEs.push_back(Die);
}
-void CompileUnit::addAccelType(StringRef Name, std::pair<DIE *, unsigned> Die) {
+void CompileUnit::addAccelType(StringRef Name,
+ std::pair<const DIE *, unsigned> Die) {
DU->getStringPoolEntry(Name);
- std::vector<std::pair<DIE *, unsigned> > &DIEs = AccelTypes[Name];
+ std::vector<std::pair<const DIE *, unsigned> > &DIEs = AccelTypes[Name];
DIEs.push_back(Die);
}
BTy.getEncoding());
uint64_t Size = BTy.getSizeInBits() >> 3;
- addUInt(&Buffer, dwarf::DW_AT_byte_size, 0, Size);
+ addUInt(&Buffer, dwarf::DW_AT_byte_size, None, Size);
}
/// constructTypeDIE - Construct derived type die from DIDerivedType.
// Add size if non-zero (derived types might be zero-sized.)
if (Size && Tag != dwarf::DW_TAG_pointer_type)
- addUInt(&Buffer, dwarf::DW_AT_byte_size, 0, Size);
+ addUInt(&Buffer, dwarf::DW_AT_byte_size, None, Size);
if (Tag == dwarf::DW_TAG_ptr_to_member_type)
addDIEEntry(&Buffer, dwarf::DW_AT_containing_type,
/// Return true if the type should be split out into a type unit.
static bool shouldCreateTypeUnit(DICompositeType CTy, const DwarfDebug *DD) {
+ if (!GenerateTypeUnits)
+ return false;
+
uint16_t Tag = CTy.getTag();
switch (Tag) {
/// constructTypeDIE - Construct type DIE from DICompositeType.
void CompileUnit::constructTypeDIE(DIE &Buffer, DICompositeType CTy) {
- // Get core information.
+ // If this is a type applicable to a type unit it then add it to the
+ // list of types we'll compute a hash for later.
+ if (shouldCreateTypeUnit(CTy, DD))
+ DD->addTypeUnitType(&Buffer, CTy);
+ else
+ constructTypeDIEImpl(Buffer, CTy);
+}
+
+void CompileUnit::constructTypeDIEImpl(DIE &Buffer, DICompositeType CTy) {
+ // Add name if not anonymous or intermediate type.
StringRef Name = CTy.getName();
uint64_t Size = CTy.getSizeInBits() >> 3;
switch (Tag) {
case dwarf::DW_TAG_array_type:
- constructArrayTypeDIE(Buffer, &CTy);
+ constructArrayTypeDIE(Buffer, CTy);
+ break;
+ case dwarf::DW_TAG_enumeration_type:
+ constructEnumTypeDIE(Buffer, CTy);
break;
- case dwarf::DW_TAG_enumeration_type: {
- DIArray Elements = CTy.getTypeArray();
-
- // Add enumerators to enumeration type.
- for (unsigned i = 0, N = Elements.getNumElements(); i < N; ++i) {
- DIDescriptor Enum(Elements.getElement(i));
- if (Enum.isEnumerator())
- constructEnumTypeDIE(DIEnumerator(Enum), Buffer);
- }
- DIType DTy = resolve(CTy.getTypeDerivedFrom());
- if (DTy) {
- addType(&Buffer, DTy);
- addFlag(&Buffer, dwarf::DW_AT_enum_class);
- }
- } break;
case dwarf::DW_TAG_subroutine_type: {
// Add return type. A void return won't have a type.
DIArray Elements = CTy.getTypeArray();
- DIDescriptor RTy = Elements.getElement(0);
+ DIType RTy(Elements.getElement(0));
if (RTy)
- addType(&Buffer, DIType(RTy));
+ addType(&Buffer, RTy);
bool isPrototyped = true;
// Add arguments.
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);
+ createAndAddDIE(dwarf::DW_TAG_unspecified_parameters, Buffer);
isPrototyped = false;
} else {
- DIE *Arg = new DIE(dwarf::DW_TAG_formal_parameter);
+ DIE *Arg = createAndAddDIE(dwarf::DW_TAG_formal_parameter, Buffer);
addType(Arg, DIType(Ty));
if (DIType(Ty).isArtificial())
addFlag(Arg, dwarf::DW_AT_artificial);
- Buffer.addChild(Arg);
}
}
// Add prototype flag if we're dealing with a C language and the
// function has been prototyped.
- uint16_t Language = DICompileUnit(Node).getLanguage();
+ uint16_t Language = getLanguage();
if (isPrototyped &&
(Language == dwarf::DW_LANG_C89 || Language == dwarf::DW_LANG_C99 ||
Language == dwarf::DW_LANG_ObjC))
DIE *ElemDie = NULL;
if (Element.isSubprogram()) {
DISubprogram SP(Element);
- ElemDie = getOrCreateSubprogramDIE(DISubprogram(Element));
+ ElemDie = getOrCreateSubprogramDIE(SP);
if (SP.isProtected())
addUInt(ElemDie, dwarf::DW_AT_accessibility, dwarf::DW_FORM_data1,
dwarf::DW_ACCESS_protected);
} else if (Element.isDerivedType()) {
DIDerivedType DDTy(Element);
if (DDTy.getTag() == dwarf::DW_TAG_friend) {
- ElemDie = new DIE(dwarf::DW_TAG_friend);
+ ElemDie = createAndAddDIE(dwarf::DW_TAG_friend, Buffer);
addType(ElemDie, resolve(DDTy.getTypeDerivedFrom()),
dwarf::DW_AT_friend);
- Buffer.addChild(ElemDie);
} else if (DDTy.isStaticMember()) {
- ElemDie = getOrCreateStaticMemberDIE(DDTy);
+ getOrCreateStaticMemberDIE(DDTy);
} else {
- ElemDie = createMemberDIE(DDTy, Buffer);
+ constructMemberDIE(Buffer, DDTy);
}
} else if (Element.isObjCProperty()) {
DIObjCProperty Property(Element);
- ElemDie = new DIE(Property.getTag());
+ ElemDie = createAndAddDIE(Property.getTag(), Buffer);
StringRef PropertyName = Property.getObjCPropertyName();
addString(ElemDie, dwarf::DW_AT_APPLE_property_name, PropertyName);
addType(ElemDie, Property.getType());
if (Property.isNonAtomicObjCProperty())
PropertyAttributes |= dwarf::DW_APPLE_PROPERTY_nonatomic;
if (PropertyAttributes)
- addUInt(ElemDie, dwarf::DW_AT_APPLE_property_attribute, 0,
+ addUInt(ElemDie, dwarf::DW_AT_APPLE_property_attribute, None,
PropertyAttributes);
DIEEntry *Entry = getDIEEntry(Element);
Entry = createDIEEntry(ElemDie);
insertDIEEntry(Element, Entry);
}
- Buffer.addChild(ElemDie);
} else
continue;
}
addFlag(&Buffer, dwarf::DW_AT_APPLE_block);
DICompositeType ContainingType(resolve(CTy.getContainingType()));
- if (DIDescriptor(ContainingType).isCompositeType())
+ if (ContainingType)
addDIEEntry(&Buffer, dwarf::DW_AT_containing_type,
- getOrCreateTypeDIE(DIType(ContainingType)));
+ getOrCreateTypeDIE(ContainingType));
if (CTy.isObjcClassComplete())
addFlag(&Buffer, dwarf::DW_AT_APPLE_objc_complete_type);
// Add size if non-zero (derived types might be zero-sized.)
// TODO: Do we care about size for enum forward declarations?
if (Size)
- addUInt(&Buffer, dwarf::DW_AT_byte_size, 0, Size);
+ addUInt(&Buffer, dwarf::DW_AT_byte_size, None, Size);
else if (!CTy.isForwardDecl())
// Add zero size if it is not a forward declaration.
- addUInt(&Buffer, dwarf::DW_AT_byte_size, 0, 0);
+ addUInt(&Buffer, dwarf::DW_AT_byte_size, None, 0);
// If we're a forward decl, say so.
if (CTy.isForwardDecl())
addUInt(&Buffer, dwarf::DW_AT_APPLE_runtime_class, dwarf::DW_FORM_data1,
RLang);
}
- // If this is a type applicable to a type unit it then add it to the
- // list of types we'll compute a hash for later.
- if (shouldCreateTypeUnit(CTy, DD))
- DD->addTypeUnitType(&Buffer);
}
-/// getOrCreateTemplateTypeParameterDIE - Find existing DIE or create new DIE
-/// for the given DITemplateTypeParameter.
-DIE *
-CompileUnit::getOrCreateTemplateTypeParameterDIE(DITemplateTypeParameter TP,
- DIE &Buffer) {
- DIE *ParamDIE = getDIE(TP);
- if (ParamDIE)
- return ParamDIE;
-
- ParamDIE = new DIE(dwarf::DW_TAG_template_type_parameter);
- Buffer.addChild(ParamDIE);
+/// constructTemplateTypeParameterDIE - Construct new DIE for the given
+/// DITemplateTypeParameter.
+void
+CompileUnit::constructTemplateTypeParameterDIE(DIE &Buffer,
+ DITemplateTypeParameter TP) {
+ DIE *ParamDIE =
+ createAndAddDIE(dwarf::DW_TAG_template_type_parameter, Buffer);
// Add the type if it exists, it could be void and therefore no type.
if (TP.getType())
addType(ParamDIE, resolve(TP.getType()));
if (!TP.getName().empty())
addString(ParamDIE, dwarf::DW_AT_name, TP.getName());
- return ParamDIE;
}
-/// getOrCreateTemplateValueParameterDIE - Find existing DIE or create new DIE
-/// for the given DITemplateValueParameter.
-DIE *
-CompileUnit::getOrCreateTemplateValueParameterDIE(DITemplateValueParameter VP,
- DIE &Buffer) {
- DIE *ParamDIE = getDIE(VP);
- if (ParamDIE)
- return ParamDIE;
-
- ParamDIE = new DIE(VP.getTag());
- Buffer.addChild(ParamDIE);
+/// constructTemplateValueParameterDIE - Construct new DIE for the given
+/// DITemplateValueParameter.
+void
+CompileUnit::constructTemplateValueParameterDIE(DIE &Buffer,
+ DITemplateValueParameter VP) {
+ DIE *ParamDIE = createAndAddDIE(VP.getTag(), Buffer);
// Add the type if there is one, template template and template parameter
// packs will not have a type.
- if (VP.getType())
+ if (VP.getTag() == dwarf::DW_TAG_template_value_parameter)
addType(ParamDIE, resolve(VP.getType()));
if (!VP.getName().empty())
addString(ParamDIE, dwarf::DW_AT_name, VP.getName());
// For declaration non-type template parameters (such as global values and
// functions)
DIEBlock *Block = new (DIEValueAllocator) DIEBlock();
- addOpAddress(Block, Asm->Mang->getSymbol(GV));
+ addOpAddress(Block, Asm->getSymbol(GV));
// Emit DW_OP_stack_value to use the address as the immediate value of the
// parameter, rather than a pointer to it.
- addUInt(Block, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_stack_value);
- addBlock(ParamDIE, dwarf::DW_AT_location, 0, Block);
+ addUInt(Block, dwarf::DW_FORM_data1, dwarf::DW_OP_stack_value);
+ addBlock(ParamDIE, dwarf::DW_AT_location, Block);
} else if (VP.getTag() == dwarf::DW_TAG_GNU_template_template_param) {
assert(isa<MDString>(Val));
addString(ParamDIE, dwarf::DW_AT_GNU_template_name,
addTemplateParams(*ParamDIE, A);
}
}
-
- return ParamDIE;
}
/// getOrCreateNameSpace - Create a DIE for DINameSpace.
DIE *CompileUnit::getOrCreateNameSpace(DINameSpace NS) {
+ // Construct the context before querying for the existence of the DIE in case
+ // such construction creates the DIE.
+ DIE *ContextDIE = getOrCreateContextDIE(NS.getContext());
+
DIE *NDie = getDIE(NS);
if (NDie)
return NDie;
- NDie = new DIE(dwarf::DW_TAG_namespace);
- insertDIE(NS, NDie);
+ NDie = createAndAddDIE(dwarf::DW_TAG_namespace, *ContextDIE, NS);
+
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;
}
// such construction creates the DIE (as is the case for member function
// declarations).
DIE *ContextDIE = getOrCreateContextDIE(resolve(SP.getContext()));
- if (!ContextDIE)
- ContextDIE = CUDie.get();
DIE *SPDie = getDIE(SP);
if (SPDie)
return SPDie;
- SPDie = new DIE(dwarf::DW_TAG_subprogram);
+ DISubprogram SPDecl = SP.getFunctionDeclaration();
+ if (SPDecl.isSubprogram())
+ // Add subprogram definitions to the CU die directly.
+ ContextDIE = CUDie.get();
// DW_TAG_inlined_subroutine may refer to this DIE.
- insertDIE(SP, SPDie);
+ SPDie = createAndAddDIE(dwarf::DW_TAG_subprogram, *ContextDIE, SP);
- DISubprogram SPDecl = SP.getFunctionDeclaration();
DIE *DeclDie = NULL;
- if (SPDecl.isSubprogram()) {
+ if (SPDecl.isSubprogram())
DeclDie = getOrCreateSubprogramDIE(SPDecl);
- }
// Add function template parameters.
addTemplateParams(*SPDie, SP.getTemplateParams());
// Refer function declaration directly.
addDIEEntry(SPDie, dwarf::DW_AT_specification, DeclDie);
- // Add subprogram definitions to the CU die directly.
- addDie(SPDie);
-
return SPDie;
}
- // Add to context owner.
- ContextDIE->addChild(SPDie);
-
// Add the linkage name if we have one.
StringRef LinkageName = SP.getLinkageName();
if (!LinkageName.empty())
// Add the prototype if we have a prototype and we have a C like
// language.
- uint16_t Language = DICompileUnit(Node).getLanguage();
+ uint16_t Language = getLanguage();
if (SP.isPrototyped() &&
(Language == dwarf::DW_LANG_C89 || Language == dwarf::DW_LANG_C99 ||
Language == dwarf::DW_LANG_ObjC))
addFlag(SPDie, dwarf::DW_AT_prototyped);
- // Add Return Type. A void return type will not have a type.
DICompositeType SPTy = SP.getType();
assert(SPTy.getTag() == dwarf::DW_TAG_subroutine_type &&
"the type of a subprogram should be a subroutine");
DIArray Args = SPTy.getTypeArray();
+ // Add a return type. If this is a type like a C/C++ void type we don't add a
+ // return type.
if (Args.getElement(0))
addType(SPDie, DIType(Args.getElement(0)));
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,
- resolve(SP.getContainingType())));
+ addUInt(Block, dwarf::DW_FORM_data1, dwarf::DW_OP_constu);
+ addUInt(Block, dwarf::DW_FORM_udata, SP.getVirtualIndex());
+ addBlock(SPDie, dwarf::DW_AT_vtable_elem_location, Block);
+ ContainingTypeMap.insert(
+ std::make_pair(SPDie, resolve(SP.getContainingType())));
}
if (!SP.isDefinition()) {
// Add arguments. Do not add arguments for subprogram definition. They will
// be handled while processing variables.
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));
+ DIE *Arg = createAndAddDIE(dwarf::DW_TAG_formal_parameter, *SPDie);
+ DIType ATy(Args.getElement(i));
addType(Arg, ATy);
if (ATy.isArtificial())
addFlag(Arg, dwarf::DW_AT_artificial);
- SPDie->addChild(Arg);
}
}
}
/// createGlobalVariableDIE - create global variable DIE.
-void CompileUnit::createGlobalVariableDIE(const MDNode *N) {
+void CompileUnit::createGlobalVariableDIE(DIGlobalVariable GV) {
// Check for pre-existence.
- if (getDIE(N))
+ if (getDIE(GV))
return;
- DIGlobalVariable GV(N);
if (!GV.isGlobalVariable())
return;
// If this is not a static data member definition, create the variable
// DIE and add the initial set of attributes to it.
if (!VariableDIE) {
- VariableDIE = new DIE(GV.getTag());
+ // Construct the context before querying for the existence of the DIE in
+ // case such construction creates the DIE.
+ DIE *ContextDIE = getOrCreateContextDIE(GVContext);
+
// Add to map.
- insertDIE(N, VariableDIE);
+ VariableDIE = createAndAddDIE(GV.getTag(), *ContextDIE, GV);
// Add name and type.
addString(VariableDIE, dwarf::DW_AT_name, GV.getDisplayName());
// Add line number info.
addSourceLine(VariableDIE, GV);
- // Add to context owner.
- addToContextOwner(VariableDIE, GVContext);
}
// Add location.
if (isGlobalVariable) {
addToAccelTable = true;
DIEBlock *Block = new (DIEValueAllocator) DIEBlock();
- const MCSymbol *Sym = Asm->Mang->getSymbol(GV.getGlobal());
+ const MCSymbol *Sym = Asm->getSymbol(GV.getGlobal());
if (GV.getGlobal()->isThreadLocal()) {
// FIXME: Make this work with -gsplit-dwarf.
unsigned PointerSize = Asm->getDataLayout().getPointerSize();
// Based on GCC's support for TLS:
if (!DD->useSplitDwarf()) {
// 1) Start with a constNu of the appropriate pointer size
- addUInt(Block, 0, dwarf::DW_FORM_data1,
+ addUInt(Block, dwarf::DW_FORM_data1,
PointerSize == 4 ? dwarf::DW_OP_const4u : dwarf::DW_OP_const8u);
// 2) containing the (relocated) offset of the TLS variable
// within the module's TLS block.
- addExpr(Block, 0, dwarf::DW_FORM_udata, Expr);
+ addExpr(Block, dwarf::DW_FORM_udata, Expr);
} else {
- addUInt(Block, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_GNU_const_index);
- addUInt(Block, 0, dwarf::DW_FORM_udata, DU->getAddrPoolIndex(Expr));
+ addUInt(Block, dwarf::DW_FORM_data1, dwarf::DW_OP_GNU_const_index);
+ addUInt(Block, dwarf::DW_FORM_udata, DU->getAddrPoolIndex(Expr));
}
// 3) followed by a custom OP to make the debugger do a TLS lookup.
- addUInt(Block, 0, dwarf::DW_FORM_data1,
- dwarf::DW_OP_GNU_push_tls_address);
+ addUInt(Block, dwarf::DW_FORM_data1, dwarf::DW_OP_GNU_push_tls_address);
} else
addOpAddress(Block, Sym);
// Do not create specification DIE if context is either compile unit
if (GVContext && GV.isDefinition() && !GVContext.isCompileUnit() &&
!GVContext.isFile() && !DD->isSubprogramContext(GVContext)) {
// Create specification DIE.
- VariableSpecDIE = new DIE(dwarf::DW_TAG_variable);
+ VariableSpecDIE = createAndAddDIE(dwarf::DW_TAG_variable, *CUDie);
addDIEEntry(VariableSpecDIE, dwarf::DW_AT_specification, VariableDIE);
- addBlock(VariableSpecDIE, dwarf::DW_AT_location, 0, Block);
+ addBlock(VariableSpecDIE, dwarf::DW_AT_location, Block);
// A static member's declaration is already flagged as such.
if (!SDMDecl.Verify())
addFlag(VariableDIE, dwarf::DW_AT_declaration);
- addDie(VariableSpecDIE);
} else {
- addBlock(VariableDIE, dwarf::DW_AT_location, 0, Block);
+ addBlock(VariableDIE, dwarf::DW_AT_location, Block);
}
// Add the linkage name.
StringRef LinkageName = GV.getLinkageName();
// it is not a static member.
if (!IsStaticMember)
addConstantValue(VariableDIE, CI, isUnsignedDIType(DD, GTy));
- } else if (const ConstantExpr *CE = getMergedGlobalExpr(N->getOperand(11))) {
+ } else if (const ConstantExpr *CE = getMergedGlobalExpr(GV->getOperand(11))) {
addToAccelTable = true;
// GV is a merged global.
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);
+ addOpAddress(Block, Asm->getSymbol(cast<GlobalValue>(Ptr)));
+ addUInt(Block, 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,
+ addUInt(Block, 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);
+ addUInt(Block, dwarf::DW_FORM_data1, dwarf::DW_OP_plus);
+ addBlock(VariableDIE, dwarf::DW_AT_location, Block);
}
if (addToAccelTable) {
/// constructSubrangeDIE - Construct subrange DIE from DISubrange.
void CompileUnit::constructSubrangeDIE(DIE &Buffer, DISubrange SR,
DIE *IndexTy) {
- DIE *DW_Subrange = new DIE(dwarf::DW_TAG_subrange_type);
+ DIE *DW_Subrange = createAndAddDIE(dwarf::DW_TAG_subrange_type, Buffer);
addDIEEntry(DW_Subrange, dwarf::DW_AT_type, IndexTy);
// The LowerBound value defines the lower bounds which is typically zero for
int64_t Count = SR.getCount();
if (DefaultLowerBound == -1 || LowerBound != DefaultLowerBound)
- addUInt(DW_Subrange, dwarf::DW_AT_lower_bound, 0, LowerBound);
+ addUInt(DW_Subrange, dwarf::DW_AT_lower_bound, None, LowerBound);
if (Count != -1 && Count != 0)
// FIXME: An unbounded array should reference the expression that defines
// the array.
- addUInt(DW_Subrange, dwarf::DW_AT_upper_bound, 0, LowerBound + Count - 1);
-
- Buffer.addChild(DW_Subrange);
+ addUInt(DW_Subrange, dwarf::DW_AT_upper_bound, None,
+ LowerBound + Count - 1);
}
/// constructArrayTypeDIE - Construct array type DIE from DICompositeType.
-void CompileUnit::constructArrayTypeDIE(DIE &Buffer, DICompositeType *CTy) {
- if (CTy->isVector())
+void CompileUnit::constructArrayTypeDIE(DIE &Buffer, DICompositeType CTy) {
+ if (CTy.isVector())
addFlag(&Buffer, dwarf::DW_AT_GNU_vector);
// Emit the element type.
- addType(&Buffer, resolve(CTy->getTypeDerivedFrom()));
+ addType(&Buffer, resolve(CTy.getTypeDerivedFrom()));
// Get an anonymous type for index type.
// FIXME: This type should be passed down from the front end
DIE *IdxTy = getIndexTyDie();
if (!IdxTy) {
// Construct an anonymous type for index type.
- IdxTy = new DIE(dwarf::DW_TAG_base_type);
+ IdxTy = createAndAddDIE(dwarf::DW_TAG_base_type, *CUDie.get());
addString(IdxTy, dwarf::DW_AT_name, "int");
- addUInt(IdxTy, dwarf::DW_AT_byte_size, 0, sizeof(int32_t));
+ addUInt(IdxTy, dwarf::DW_AT_byte_size, None, sizeof(int32_t));
addUInt(IdxTy, dwarf::DW_AT_encoding, dwarf::DW_FORM_data1,
dwarf::DW_ATE_signed);
- addDie(IdxTy);
setIndexTyDie(IdxTy);
}
// Add subranges to array type.
- DIArray Elements = CTy->getTypeArray();
+ DIArray Elements = CTy.getTypeArray();
for (unsigned i = 0, N = Elements.getNumElements(); i < N; ++i) {
DIDescriptor Element = Elements.getElement(i);
if (Element.getTag() == dwarf::DW_TAG_subrange_type)
}
}
-/// constructEnumTypeDIE - Construct enum type DIE from DIEnumerator.
-DIE *CompileUnit::constructEnumTypeDIE(DIEnumerator ETy, DIE &Buffer) {
- DIE *Enumerator = new DIE(dwarf::DW_TAG_enumerator);
- Buffer.addChild(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;
+/// constructEnumTypeDIE - Construct an enum type DIE from DICompositeType.
+void CompileUnit::constructEnumTypeDIE(DIE &Buffer, DICompositeType CTy) {
+ DIArray Elements = CTy.getTypeArray();
+
+ // Add enumerators to enumeration type.
+ for (unsigned i = 0, N = Elements.getNumElements(); i < N; ++i) {
+ DIEnumerator Enum(Elements.getElement(i));
+ if (Enum.isEnumerator()) {
+ DIE *Enumerator = createAndAddDIE(dwarf::DW_TAG_enumerator, Buffer);
+ StringRef Name = Enum.getName();
+ addString(Enumerator, dwarf::DW_AT_name, Name);
+ int64_t Value = Enum.getEnumValue();
+ addSInt(Enumerator, dwarf::DW_AT_const_value, dwarf::DW_FORM_sdata,
+ Value);
+ }
+ }
+ DIType DTy = resolve(CTy.getTypeDerivedFrom());
+ if (DTy) {
+ addType(&Buffer, DTy);
+ addFlag(&Buffer, dwarf::DW_AT_enum_class);
+ }
}
/// constructContainingTypeDIEs - Construct DIEs for types that contain
CE = ContainingTypeMap.end();
CI != CE; ++CI) {
DIE *SPDie = CI->first;
- const MDNode *N = CI->second;
- if (!N)
+ DIDescriptor D(CI->second);
+ if (!D)
continue;
- DIE *NDie = getDIE(N);
+ DIE *NDie = getDIE(D);
if (!NDie)
continue;
addDIEEntry(SPDie, dwarf::DW_AT_containing_type, NDie);
}
/// constructVariableDIE - Construct a DIE for the given DbgVariable.
-DIE *CompileUnit::constructVariableDIE(DbgVariable *DV, bool isScopeAbstract) {
- StringRef Name = DV->getName();
+DIE *CompileUnit::constructVariableDIE(DbgVariable &DV, bool isScopeAbstract) {
+ StringRef Name = DV.getName();
// Define variable debug information entry.
- DIE *VariableDie = new DIE(DV->getTag());
- DbgVariable *AbsVar = DV->getAbstractVariable();
+ DIE *VariableDie = new DIE(DV.getTag());
+ DbgVariable *AbsVar = DV.getAbstractVariable();
DIE *AbsDIE = AbsVar ? AbsVar->getDIE() : NULL;
if (AbsDIE)
addDIEEntry(VariableDie, dwarf::DW_AT_abstract_origin, AbsDIE);
else {
if (!Name.empty())
addString(VariableDie, dwarf::DW_AT_name, Name);
- addSourceLine(VariableDie, DV->getVariable());
- addType(VariableDie, DV->getType());
+ addSourceLine(VariableDie, DV.getVariable());
+ addType(VariableDie, DV.getType());
}
- if (DV->isArtificial())
+ if (DV.isArtificial())
addFlag(VariableDie, dwarf::DW_AT_artificial);
if (isScopeAbstract) {
- DV->setDIE(VariableDie);
+ DV.setDIE(VariableDie);
return VariableDie;
}
// Add variable address.
- unsigned Offset = DV->getDotDebugLocOffset();
+ 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);
+ addSectionLabel(VariableDie, dwarf::DW_AT_location,
+ Asm->GetTempSymbol("debug_loc", Offset));
+ DV.setDIE(VariableDie);
return VariableDie;
}
// Check if variable is described by a DBG_VALUE instruction.
- if (const MachineInstr *DVInsn = DV->getMInsn()) {
+ if (const MachineInstr *DVInsn = DV.getMInsn()) {
assert(DVInsn->getNumOperands() == 3);
if (DVInsn->getOperand(0).isReg()) {
const MachineOperand RegOp = DVInsn->getOperand(0);
if (DVInsn->getOperand(1).isImm()) {
MachineLocation Location(RegOp.getReg(),
DVInsn->getOperand(1).getImm());
- addVariableAddress(*DV, VariableDie, Location);
+ addVariableAddress(DV, VariableDie, Location);
} else if (RegOp.getReg())
- addVariableAddress(*DV, VariableDie, MachineLocation(RegOp.getReg()));
+ addVariableAddress(DV, VariableDie, MachineLocation(RegOp.getReg()));
} else if (DVInsn->getOperand(0).isImm())
- addConstantValue(VariableDie, DVInsn->getOperand(0), DV->getType());
+ addConstantValue(VariableDie, DVInsn->getOperand(0), DV.getType());
else if (DVInsn->getOperand(0).isFPImm())
addConstantFPValue(VariableDie, DVInsn->getOperand(0));
else if (DVInsn->getOperand(0).isCImm())
addConstantValue(VariableDie, DVInsn->getOperand(0).getCImm(),
- isUnsignedDIType(DD, DV->getType()));
+ isUnsignedDIType(DD, DV.getType()));
- DV->setDIE(VariableDie);
+ DV.setDIE(VariableDie);
return VariableDie;
} else {
// .. else use frame index.
- int FI = DV->getFrameIndex();
+ 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);
+ addVariableAddress(DV, VariableDie, Location);
}
}
- DV->setDIE(VariableDie);
+ DV.setDIE(VariableDie);
return VariableDie;
}
-/// createMemberDIE - Create new member DIE.
-DIE *CompileUnit::createMemberDIE(DIDerivedType DT, DIE &Buffer) {
- DIE *MemberDie = new DIE(DT.getTag());
- Buffer.addChild(MemberDie);
+/// constructMemberDIE - Construct member DIE from DIDerivedType.
+void CompileUnit::constructMemberDIE(DIE &Buffer, DIDerivedType DT) {
+ DIE *MemberDie = createAndAddDIE(DT.getTag(), Buffer);
StringRef Name = DT.getName();
if (!Name.empty())
addString(MemberDie, dwarf::DW_AT_name, Name);
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 = getBaseTypeSize(DD, DT);
-
- if (Size != FieldSize) {
- // Handle bitfield.
- addUInt(MemberDie, dwarf::DW_AT_byte_size, 0, getBaseTypeSize(DD, DT) >> 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;
-
- // Maybe we need to work from the other end.
- if (Asm->getDataLayout().isLittleEndian())
- Offset = FieldSize - (Offset + Size);
- addUInt(MemberDie, dwarf::DW_AT_bit_offset, 0, Offset);
-
- // Here WD_AT_data_member_location points to the anonymous
- // field that includes this bit field.
- addUInt(MemLocationDie, 0, dwarf::DW_FORM_udata, FieldOffset >> 3);
-
- } else
- // This is not a bitfield.
- addUInt(MemLocationDie, 0, dwarf::DW_FORM_udata, DT.getOffsetInBits() >> 3);
+ addUInt(MemLocationDie, dwarf::DW_FORM_data1, dwarf::DW_OP_plus_uconst);
if (DT.getTag() == dwarf::DW_TAG_inheritance && DT.isVirtual()) {
// BaseAddr = ObAddr + *((*ObAddr) - Offset)
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);
+ addUInt(VBaseLocationDie, dwarf::DW_FORM_data1, dwarf::DW_OP_dup);
+ addUInt(VBaseLocationDie, dwarf::DW_FORM_data1, dwarf::DW_OP_deref);
+ addUInt(VBaseLocationDie, dwarf::DW_FORM_data1, dwarf::DW_OP_constu);
+ addUInt(VBaseLocationDie, dwarf::DW_FORM_udata, DT.getOffsetInBits());
+ addUInt(VBaseLocationDie, dwarf::DW_FORM_data1, dwarf::DW_OP_minus);
+ addUInt(VBaseLocationDie, dwarf::DW_FORM_data1, dwarf::DW_OP_deref);
+ addUInt(VBaseLocationDie, dwarf::DW_FORM_data1, dwarf::DW_OP_plus);
+
+ addBlock(MemberDie, dwarf::DW_AT_data_member_location, VBaseLocationDie);
+ } else {
+ uint64_t Size = DT.getSizeInBits();
+ uint64_t FieldSize = getBaseTypeSize(DD, DT);
+ uint64_t OffsetInBytes;
+
+ if (Size != FieldSize) {
+ // Handle bitfield.
+ addUInt(MemberDie, dwarf::DW_AT_byte_size, None,
+ getBaseTypeSize(DD, DT) >> 3);
+ addUInt(MemberDie, dwarf::DW_AT_bit_size, None, 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;
+
+ // Maybe we need to work from the other end.
+ if (Asm->getDataLayout().isLittleEndian())
+ Offset = FieldSize - (Offset + Size);
+ addUInt(MemberDie, dwarf::DW_AT_bit_offset, None, Offset);
+
+ // Here WD_AT_data_member_location points to the anonymous
+ // field that includes this bit field.
+ OffsetInBytes = FieldOffset >> 3;
+ } else
+ // This is not a bitfield.
+ OffsetInBytes = DT.getOffsetInBits() >> 3;
+ addUInt(MemberDie, dwarf::DW_AT_data_member_location, None, OffsetInBytes);
+ }
if (DT.isProtected())
addUInt(MemberDie, dwarf::DW_AT_accessibility, dwarf::DW_FORM_data1,
if (DT.isArtificial())
addFlag(MemberDie, dwarf::DW_AT_artificial);
-
- return MemberDie;
}
/// getOrCreateStaticMemberDIE - Create new DIE for C++ static member.
-DIE *CompileUnit::getOrCreateStaticMemberDIE(const DIDerivedType DT) {
+DIE *CompileUnit::getOrCreateStaticMemberDIE(DIDerivedType DT) {
if (!DT.Verify())
return NULL;
// Construct the context before querying for the existence of the DIE in case
// such construction creates the DIE.
DIE *ContextDIE = getOrCreateContextDIE(resolve(DT.getContext()));
- assert(ContextDIE && "Static member should belong to a non-CU context.");
+ assert(dwarf::isType(ContextDIE->getTag()) &&
+ "Static member should belong to a type.");
DIE *StaticMemberDIE = getDIE(DT);
if (StaticMemberDIE)
return StaticMemberDIE;
- StaticMemberDIE = new DIE(DT.getTag());
- // Add to context owner.
- ContextDIE->addChild(StaticMemberDIE);
+ StaticMemberDIE = createAndAddDIE(DT.getTag(), *ContextDIE, DT);
DIType Ty = resolve(DT.getTypeDerivedFrom());
if (const ConstantFP *CFP = dyn_cast_or_null<ConstantFP>(DT.getConstant()))
addConstantFPValue(StaticMemberDIE, CFP);
- insertDIE(DT, StaticMemberDIE);
return StaticMemberDIE;
}
+
+void CompileUnit::emitHeader(const MCSection *ASection,
+ const MCSymbol *ASectionSym) {
+ Asm->OutStreamer.AddComment("DWARF version number");
+ Asm->EmitInt16(DD->getDwarfVersion());
+ Asm->OutStreamer.AddComment("Offset Into Abbrev. Section");
+ Asm->EmitSectionOffset(Asm->GetTempSymbol(ASection->getLabelBeginName()),
+ ASectionSym);
+ Asm->OutStreamer.AddComment("Address Size (in bytes)");
+ Asm->EmitInt8(Asm->getDataLayout().getPointerSize());
+}
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