//
//===----------------------------------------------------------------------===//
//
-// This file contains support for writing dwarf compile unit.
+// This file contains support for constructing a dwarf compile unit.
//
//===----------------------------------------------------------------------===//
#define DEBUG_TYPE "dwarfdebug"
-#include "DwarfAccelTable.h"
#include "DwarfCompileUnit.h"
+#include "DwarfAccelTable.h"
#include "DwarfDebug.h"
-#include "llvm/Constants.h"
-#include "llvm/GlobalVariable.h"
-#include "llvm/Instructions.h"
-#include "llvm/Analysis/DIBuilder.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/TargetData.h"
#include "llvm/Target/TargetFrameLowering.h"
#include "llvm/Target/TargetMachine.h"
+#include "llvm/Target/TargetLoweringObjectFile.h"
#include "llvm/Target/TargetRegisterInfo.h"
-#include "llvm/ADT/APFloat.h"
-#include "llvm/Support/ErrorHandling.h"
using namespace llvm;
/// CompileUnit - Compile unit constructor.
-CompileUnit::CompileUnit(unsigned I, unsigned L, DIE *D, AsmPrinter *A,
- DwarfDebug *DW)
- : ID(I), Language(L), CUDie(D), Asm(A), DD(DW), IndexTyDie(0) {
+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),
+ DebugInfoOffset(0) {
DIEIntegerOne = new (DIEValueAllocator) DIEInteger(1);
+ insertDIE(N, D);
}
/// ~CompileUnit - Destructor for compile unit.
return Value;
}
+/// 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()) {
+ 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;
+
+ // The languages below have valid values only if the DWARF version >= 4.
+ 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;
+}
+
+/// addFlag - Add a flag that is true.
+void CompileUnit::addFlag(DIE *Die, uint16_t Attribute) {
+ if (!DD->useDarwinGDBCompat())
+ Die->addValue(Attribute, dwarf::DW_FORM_flag_present,
+ DIEIntegerOne);
+ else
+ addUInt(Die, Attribute, dwarf::DW_FORM_flag, 1);
+}
+
/// addUInt - Add an unsigned integer attribute data and value.
///
-void CompileUnit::addUInt(DIE *Die, unsigned Attribute,
- unsigned Form, uint64_t Integer) {
+void CompileUnit::addUInt(DIE *Die, uint16_t Attribute,
+ uint16_t Form, uint64_t Integer) {
if (!Form) Form = DIEInteger::BestForm(false, Integer);
DIEValue *Value = Integer == 1 ?
DIEIntegerOne : new (DIEValueAllocator) DIEInteger(Integer);
/// addSInt - Add an signed integer attribute data and value.
///
-void CompileUnit::addSInt(DIE *Die, unsigned Attribute,
- unsigned Form, int64_t Integer) {
+void CompileUnit::addSInt(DIE *Die, uint16_t Attribute,
+ uint16_t Form, int64_t Integer) {
if (!Form) Form = DIEInteger::BestForm(true, Integer);
DIEValue *Value = new (DIEValueAllocator) DIEInteger(Integer);
Die->addValue(Attribute, Form, Value);
/// addString - Add a string attribute data and value. We always emit a
/// reference to the string pool instead of immediate strings so that DIEs have
-/// more predictable sizes.
-void CompileUnit::addString(DIE *Die, unsigned Attribute, StringRef String) {
- MCSymbol *Symb = DD->getStringPoolEntry(String);
+/// 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) {
+ DIEValue *Value;
+ uint16_t Form;
+ if (!DD->useSplitDwarf()) {
+ MCSymbol *Symb = DU->getStringPoolEntry(String);
+ if (Asm->needsRelocationsForDwarfStringPool())
+ Value = new (DIEValueAllocator) DIELabel(Symb);
+ else {
+ MCSymbol *StringPool = DU->getStringPoolSym();
+ Value = new (DIEValueAllocator) DIEDelta(Symb, StringPool);
+ }
+ Form = dwarf::DW_FORM_strp;
+ } else {
+ unsigned idx = DU->getStringPoolIndex(String);
+ Value = new (DIEValueAllocator) DIEInteger(idx);
+ Form = dwarf::DW_FORM_GNU_str_index;
+ }
+ DIEValue *Str = new (DIEValueAllocator) DIEString(Value, String);
+ Die->addValue(Attribute, Form, Str);
+}
+
+/// 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,
+ StringRef String) {
+ MCSymbol *Symb = DU->getStringPoolEntry(String);
DIEValue *Value;
if (Asm->needsRelocationsForDwarfStringPool())
Value = new (DIEValueAllocator) DIELabel(Symb);
else {
- MCSymbol *StringPool = DD->getStringPool();
+ MCSymbol *StringPool = DU->getStringPoolSym();
Value = new (DIEValueAllocator) DIEDelta(Symb, StringPool);
}
Die->addValue(Attribute, dwarf::DW_FORM_strp, Value);
}
+/// addExpr - Add a Dwarf expression attribute data and value.
+///
+void CompileUnit::addExpr(DIE *Die, uint16_t Attribute, uint16_t Form,
+ const MCExpr *Expr) {
+ DIEValue *Value = new (DIEValueAllocator) DIEExpr(Expr);
+ Die->addValue(Attribute, Form, Value);
+}
+
/// addLabel - Add a Dwarf label attribute data and value.
///
-void CompileUnit::addLabel(DIE *Die, unsigned Attribute, unsigned Form,
+void CompileUnit::addLabel(DIE *Die, uint16_t Attribute, uint16_t Form,
const MCSymbol *Label) {
DIEValue *Value = new (DIEValueAllocator) DIELabel(Label);
Die->addValue(Attribute, Form, Value);
}
+/// 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,
+ 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);
+ }
+}
+
+/// 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) {
+ if (!DD->useSplitDwarf()) {
+ addUInt(Die, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_addr);
+ addLabel(Die, 0, 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));
+ }
+}
+
/// addDelta - Add a label delta attribute data and value.
///
-void CompileUnit::addDelta(DIE *Die, unsigned Attribute, unsigned Form,
+void CompileUnit::addDelta(DIE *Die, uint16_t Attribute, uint16_t Form,
const MCSymbol *Hi, const MCSymbol *Lo) {
DIEValue *Value = new (DIEValueAllocator) DIEDelta(Hi, Lo);
Die->addValue(Attribute, Form, Value);
/// addDIEEntry - Add a DIE attribute data and value.
///
-void CompileUnit::addDIEEntry(DIE *Die, unsigned Attribute, unsigned Form,
+void CompileUnit::addDIEEntry(DIE *Die, uint16_t Attribute, uint16_t Form,
DIE *Entry) {
Die->addValue(Attribute, Form, createDIEEntry(Entry));
}
/// addBlock - Add block data.
///
-void CompileUnit::addBlock(DIE *Die, unsigned Attribute, unsigned Form,
+void CompileUnit::addBlock(DIE *Die, uint16_t Attribute, uint16_t Form,
DIEBlock *Block) {
Block->ComputeSize(Asm);
DIEBlocks.push_back(Block); // Memoize so we can call the destructor later on.
/// entry.
void CompileUnit::addSourceLine(DIE *Die, DIVariable V) {
// Verify variable.
- if (!V.Verify())
+ if (!V.isVariable())
return;
-
+
unsigned Line = V.getLineNumber();
if (Line == 0)
return;
- unsigned FileID = DD->GetOrCreateSourceID(V.getContext().getFilename(),
- V.getContext().getDirectory());
+ 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);
/// entry.
void CompileUnit::addSourceLine(DIE *Die, DIGlobalVariable G) {
// Verify global variable.
- if (!G.Verify())
+ if (!G.isGlobalVariable())
return;
unsigned Line = G.getLineNumber();
if (Line == 0)
return;
- unsigned FileID = DD->GetOrCreateSourceID(G.getFilename(), G.getDirectory());
+ 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);
/// entry.
void CompileUnit::addSourceLine(DIE *Die, DISubprogram SP) {
// Verify subprogram.
- if (!SP.Verify())
- return;
- // If the line number is 0, don't add it.
- if (SP.getLineNumber() == 0)
+ if (!SP.isSubprogram())
return;
+ // If the line number is 0, don't add it.
unsigned Line = SP.getLineNumber();
- if (!SP.getContext().Verify())
+ if (Line == 0)
return;
- unsigned FileID = DD->GetOrCreateSourceID(SP.getFilename(),
- SP.getDirectory());
+
+ 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);
/// entry.
void CompileUnit::addSourceLine(DIE *Die, DIType Ty) {
// Verify type.
- if (!Ty.Verify())
+ if (!Ty.isType())
return;
unsigned Line = Ty.getLineNumber();
- if (Line == 0 || !Ty.getContext().Verify())
+ if (Line == 0)
return;
- unsigned FileID = DD->GetOrCreateSourceID(Ty.getFilename(),
- Ty.getDirectory());
+ 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);
+}
+
+/// addSourceLine - Add location information to specified debug information
+/// entry.
+void CompileUnit::addSourceLine(DIE *Die, DIObjCProperty Ty) {
+ // Verify type.
+ if (!Ty.isObjCProperty())
+ 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);
return;
StringRef FN = NS.getFilename();
- unsigned FileID = DD->GetOrCreateSourceID(FN, NS.getDirectory());
+ 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);
}
-/// addVariableAddress - Add DW_AT_location attribute for a
+/// addVariableAddress - Add DW_AT_location attribute for a
/// DbgVariable based on provided MachineLocation.
-void CompileUnit::addVariableAddress(DbgVariable *&DV, DIE *Die,
+void CompileUnit::addVariableAddress(const DbgVariable &DV, DIE *Die,
MachineLocation Location) {
- if (DV->variableHasComplexAddress())
+ if (DV.variableHasComplexAddress())
addComplexAddress(DV, Die, dwarf::DW_AT_location, Location);
- else if (DV->isBlockByrefVariable())
+ else if (DV.isBlockByrefVariable())
addBlockByrefAddress(DV, Die, dwarf::DW_AT_location, Location);
else
- addAddress(Die, dwarf::DW_AT_location, Location);
+ addAddress(Die, dwarf::DW_AT_location, Location,
+ DV.getVariable().isIndirect());
}
/// addRegisterOp - Add register operand.
/// addAddress - Add an address attribute to a die based on the location
/// provided.
-void CompileUnit::addAddress(DIE *Die, unsigned Attribute,
- const MachineLocation &Location) {
+void CompileUnit::addAddress(DIE *Die, uint16_t Attribute,
+ const MachineLocation &Location, bool Indirect) {
DIEBlock *Block = new (DIEValueAllocator) DIEBlock();
- if (Location.isReg())
+ if (Location.isReg() && !Indirect)
addRegisterOp(Block, Location.getReg());
- else
+ else {
addRegisterOffset(Block, Location.getReg(), Location.getOffset());
+ if (Indirect && !Location.isReg()) {
+ addUInt(Block, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_deref);
+ }
+ }
// Now attach the location information to the DIE.
addBlock(Die, Attribute, 0, Block);
/// given the extra address information encoded in the DIVariable, starting from
/// the starting location. Add the DWARF information to the die.
///
-void CompileUnit::addComplexAddress(DbgVariable *&DV, DIE *Die,
- unsigned Attribute,
+void CompileUnit::addComplexAddress(const DbgVariable &DV, DIE *Die,
+ uint16_t Attribute,
const MachineLocation &Location) {
DIEBlock *Block = new (DIEValueAllocator) DIEBlock();
- unsigned N = DV->getNumAddrElements();
+ unsigned N = DV.getNumAddrElements();
unsigned i = 0;
if (Location.isReg()) {
- if (N >= 2 && DV->getAddrElement(0) == DIBuilder::OpPlus) {
+ if (N >= 2 && DV.getAddrElement(0) == DIBuilder::OpPlus) {
// If first address element is OpPlus then emit
// DW_OP_breg + Offset instead of DW_OP_reg + Offset.
- addRegisterOffset(Block, Location.getReg(), DV->getAddrElement(1));
+ addRegisterOffset(Block, Location.getReg(), DV.getAddrElement(1));
i = 2;
} else
addRegisterOp(Block, Location.getReg());
addRegisterOffset(Block, Location.getReg(), Location.getOffset());
for (;i < N; ++i) {
- uint64_t Element = DV->getAddrElement(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, 0, dwarf::DW_FORM_udata, DV.getAddrElement(++i));
} else if (Element == DIBuilder::OpDeref) {
- addUInt(Block, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_deref);
+ if (!Location.isReg())
+ addUInt(Block, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_deref);
} else llvm_unreachable("unknown DIBuilder Opcode");
}
/// starting location. Add the DWARF information to the die. For
/// more information, read large comment just above here.
///
-void CompileUnit::addBlockByrefAddress(DbgVariable *&DV, DIE *Die,
- unsigned Attribute,
+void CompileUnit::addBlockByrefAddress(const DbgVariable &DV, DIE *Die,
+ uint16_t Attribute,
const MachineLocation &Location) {
- DIType Ty = DV->getType();
+ DIType Ty = DV.getType();
DIType TmpTy = Ty;
- unsigned Tag = Ty.getTag();
+ uint16_t Tag = Ty.getTag();
bool isPointer = false;
- StringRef varName = DV->getName();
+ StringRef varName = DV.getName();
if (Tag == dwarf::DW_TAG_pointer_type) {
DIDerivedType DTy = DIDerivedType(Ty);
// Decode the original location, and use that as the start of the byref
// variable's location.
- const TargetRegisterInfo *RI = Asm->TM.getRegisterInfo();
- unsigned Reg = RI->getDwarfRegNum(Location.getReg(), false);
DIEBlock *Block = new (DIEValueAllocator) DIEBlock();
- if (Location.isReg()) {
- if (Reg < 32)
- addUInt(Block, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_reg0 + Reg);
- else {
- addUInt(Block, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_regx);
- addUInt(Block, 0, dwarf::DW_FORM_udata, Reg);
- }
- } else {
- if (Reg < 32)
- addUInt(Block, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_breg0 + Reg);
- else {
- addUInt(Block, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_bregx);
- addUInt(Block, 0, dwarf::DW_FORM_udata, Reg);
- }
-
- addUInt(Block, 0, dwarf::DW_FORM_sdata, Location.getOffset());
- }
+ if (Location.isReg())
+ addRegisterOp(Block, Location.getReg());
+ else
+ addRegisterOffset(Block, Location.getReg(), Location.getOffset());
// 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).
}
/// addConstantValue - Add constant value entry in variable DIE.
-bool CompileUnit::addConstantValue(DIE *Die, const MachineOperand &MO,
+void CompileUnit::addConstantValue(DIE *Die, const MachineOperand &MO,
DIType Ty) {
+ // FIXME: This is a bit conservative/simple - it emits negative values at
+ // their maximum bit width which is a bit unfortunate (& doesn't prefer
+ // udata/sdata over dataN as suggested by the DWARF spec)
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;
+ uint16_t 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 64: Form = dwarf::DW_FORM_data8; break;
default: break;
}
- SignedConstant ? addSInt(Block, 0, Form, MO.getImm())
+ SignedConstant ? addSInt(Block, 0, Form, MO.getImm())
: addUInt(Block, 0, Form, MO.getImm());
addBlock(Die, dwarf::DW_AT_const_value, 0, Block);
- return true;
}
/// addConstantFPValue - Add constant value entry in variable DIE.
-bool CompileUnit::addConstantFPValue(DIE *Die, const MachineOperand &MO) {
+void CompileUnit::addConstantFPValue(DIE *Die, const MachineOperand &MO) {
assert (MO.isFPImm() && "Invalid machine operand!");
DIEBlock *Block = new (DIEValueAllocator) DIEBlock();
APFloat FPImm = MO.getFPImm()->getValueAPF();
const char *FltPtr = (const char*)FltVal.getRawData();
int NumBytes = FltVal.getBitWidth() / 8; // 8 bits per byte.
- bool LittleEndian = Asm->getTargetData().isLittleEndian();
+ bool LittleEndian = Asm->getDataLayout().isLittleEndian();
int Incr = (LittleEndian ? 1 : -1);
int Start = (LittleEndian ? 0 : NumBytes - 1);
int Stop = (LittleEndian ? NumBytes : -1);
(unsigned char)0xFF & FltPtr[Start]);
addBlock(Die, dwarf::DW_AT_const_value, 0, Block);
- return true;
+}
+
+/// addConstantFPValue - Add constant value entry in variable DIE.
+void CompileUnit::addConstantFPValue(DIE *Die, const ConstantFP *CFP) {
+ addConstantValue(Die, CFP->getValueAPF().bitcastToAPInt(), false);
}
/// addConstantValue - Add constant value entry in variable DIE.
-bool CompileUnit::addConstantValue(DIE *Die, const ConstantInt *CI,
+void CompileUnit::addConstantValue(DIE *Die, const ConstantInt *CI,
bool Unsigned) {
- unsigned CIBitWidth = CI->getBitWidth();
+ addConstantValue(Die, CI->getValue(), Unsigned);
+}
+
+// addConstantValue - Add constant value entry in variable DIE.
+void CompileUnit::addConstantValue(DIE *Die, const APInt &Val, bool Unsigned) {
+ unsigned CIBitWidth = Val.getBitWidth();
if (CIBitWidth <= 64) {
unsigned form = 0;
switch (CIBitWidth) {
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:
+ default:
form = Unsigned ? dwarf::DW_FORM_udata : dwarf::DW_FORM_sdata;
}
if (Unsigned)
- addUInt(Die, dwarf::DW_AT_const_value, form, CI->getZExtValue());
+ addUInt(Die, dwarf::DW_AT_const_value, form, Val.getZExtValue());
else
- addSInt(Die, dwarf::DW_AT_const_value, form, CI->getSExtValue());
- return true;
+ addSInt(Die, dwarf::DW_AT_const_value, form, Val.getSExtValue());
+ return;
}
DIEBlock *Block = new (DIEValueAllocator) DIEBlock();
// Get the raw data form of the large APInt.
- const APInt Val = CI->getValue();
const uint64_t *Ptr64 = Val.getRawData();
int NumBytes = Val.getBitWidth() / 8; // 8 bits per byte.
- bool LittleEndian = Asm->getTargetData().isLittleEndian();
+ bool LittleEndian = Asm->getDataLayout().isLittleEndian();
// Output the constant to DWARF one byte at a time.
for (int i = 0; i < NumBytes; i++) {
}
addBlock(Die, dwarf::DW_AT_const_value, 0, Block);
- return true;
}
-/// addTemplateParams - Add template parameters in buffer.
+/// addTemplateParams - Add template parameters into buffer.
void CompileUnit::addTemplateParams(DIE &Buffer, DIArray TParams) {
// Add template parameters.
for (unsigned i = 0, e = TParams.getNumElements(); i != e; ++i) {
}
}
+/// getOrCreateContextDIE - Get context owner's DIE.
+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);
+}
+
/// addToContextOwner - Add Die into the list of its context owner's children.
void CompileUnit::addToContextOwner(DIE *Die, DIDescriptor Context) {
- if (Context.isType()) {
- DIE *ContextDIE = getOrCreateTypeDIE(DIType(Context));
- ContextDIE->addChild(Die);
- } else if (Context.isNameSpace()) {
- DIE *ContextDIE = getOrCreateNameSpace(DINameSpace(Context));
- ContextDIE->addChild(Die);
- } else if (Context.isSubprogram()) {
- DIE *ContextDIE = getOrCreateSubprogramDIE(DISubprogram(Context));
- ContextDIE->addChild(Die);
- } else if (DIE *ContextDIE = getDIE(Context))
+ if (DIE *ContextDIE = getOrCreateContextDIE(Context))
ContextDIE->addChild(Die);
else
addDie(Die);
/// given DIType.
DIE *CompileUnit::getOrCreateTypeDIE(const MDNode *TyNode) {
DIType Ty(TyNode);
- if (!Ty.Verify())
+ if (!Ty.isType())
return NULL;
DIE *TyDIE = getDIE(Ty);
if (TyDIE)
DwarfAccelTable::eTypeFlagClassIsImplementation : 0;
addAccelType(Ty.getName(), std::make_pair(TyDIE, Flags));
}
-
+
addToContextOwner(TyDIE, Ty.getContext());
return TyDIE;
}
/// addType - Add a new type attribute to the specified entity.
-void CompileUnit::addType(DIE *Entity, DIType Ty) {
- if (!Ty.Verify())
- return;
+void CompileUnit::addType(DIE *Entity, DIType Ty, uint16_t 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(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, Entry);
+ Entity->addValue(Attribute, dwarf::DW_FORM_ref4, Entry);
return;
}
// Set up proxy.
Entry = createDIEEntry(Buffer);
insertDIEEntry(Ty, Entry);
- Entity->addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, Entry);
+ Entity->addValue(Attribute, dwarf::DW_FORM_ref4, Entry);
// If this is a complete composite type then include it in the
// list of global types.
///
void CompileUnit::addGlobalType(DIType Ty) {
DIDescriptor Context = Ty.getContext();
- if (Ty.isCompositeType() && !Ty.getName().empty() && !Ty.isForwardDecl()
- && (!Context || Context.isCompileUnit() || Context.isFile()
+ 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();
/// addPubTypes - Add type for pubtypes section.
void CompileUnit::addPubTypes(DISubprogram SP) {
DICompositeType SPTy = SP.getType();
- unsigned SPTag = SPTy.getTag();
+ uint16_t 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())
+ if (!ATy.isType())
continue;
addGlobalType(ATy);
}
if (BTy.getTag() == dwarf::DW_TAG_unspecified_type) {
Buffer.setTag(dwarf::DW_TAG_unspecified_type);
- // Unspecified types has only name, nothing else.
+ // An unspecified type only has a name attribute.
return;
}
// Get core information.
StringRef Name = DTy.getName();
uint64_t Size = DTy.getSizeInBits() >> 3;
- unsigned Tag = DTy.getTag();
+ uint16_t Tag = DTy.getTag();
// FIXME - Workaround for templates.
if (Tag == dwarf::DW_TAG_inheritance) Tag = dwarf::DW_TAG_reference_type;
// Map to main type, void will not have a type.
DIType FromTy = DTy.getTypeDerivedFrom();
- addType(&Buffer, FromTy);
+ if (FromTy)
+ addType(&Buffer, FromTy);
// Add name if not anonymous or intermediate type.
if (!Name.empty())
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()));
// Add source line info if available and TyDesc is not a forward declaration.
if (!DTy.isForwardDecl())
addSourceLine(&Buffer, DTy);
}
+/// Return true if the type is appropriately scoped to be contained inside
+/// its own type unit.
+static bool isTypeUnitScoped(DIType Ty) {
+ DIScope Parent = Ty.getContext();
+ while (Parent) {
+ // Don't generate a hash for anything scoped inside a function.
+ if (Parent.isSubprogram())
+ return false;
+ Parent = Parent.getContext();
+ }
+ return true;
+}
+
+/// Return true if the type should be split out into a type unit.
+static bool shouldCreateTypeUnit(DICompositeType CTy) {
+ uint16_t Tag = CTy.getTag();
+
+ switch (Tag) {
+ case dwarf::DW_TAG_structure_type:
+ case dwarf::DW_TAG_union_type:
+ case dwarf::DW_TAG_enumeration_type:
+ case dwarf::DW_TAG_class_type:
+ // If this is a class, structure, union, or enumeration type
+ // that is not a declaration, is a type definition, and not scoped
+ // inside a function then separate this out as a type unit.
+ if (CTy.isForwardDecl() || !isTypeUnitScoped(CTy))
+ return 0;
+ return 1;
+ default:
+ return 0;
+ }
+}
+
/// constructTypeDIE - Construct type DIE from DICompositeType.
void CompileUnit::constructTypeDIE(DIE &Buffer, DICompositeType CTy) {
// Get core information.
StringRef Name = CTy.getName();
uint64_t Size = CTy.getSizeInBits() >> 3;
- unsigned Tag = CTy.getTag();
+ uint16_t Tag = CTy.getTag();
Buffer.setTag(Tag);
switch (Tag) {
- case dwarf::DW_TAG_vector_type:
case dwarf::DW_TAG_array_type:
constructArrayTypeDIE(Buffer, &CTy);
break;
Buffer.addChild(ElemDie);
}
}
+ DIType DTy = CTy.getTypeDerivedFrom();
+ if (DTy) {
+ addType(&Buffer, DTy);
+ addUInt(&Buffer, dwarf::DW_AT_enum_class, dwarf::DW_FORM_flag, 1);
+ }
}
break;
case dwarf::DW_TAG_subroutine_type: {
- // Add return type.
+ // Add return type. A void return won't have a type.
DIArray Elements = CTy.getTypeArray();
DIDescriptor RTy = Elements.getElement(0);
- addType(&Buffer, DIType(RTy));
+ if (RTy)
+ addType(&Buffer, DIType(RTy));
bool isPrototyped = true;
// Add arguments.
} 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);
}
}
// Add prototype flag if we're dealing with a C language and the
// function has been prototyped.
+ uint16_t Language = DICompileUnit(Node).getLanguage();
if (isPrototyped &&
- (Language == dwarf::DW_LANG_C89 ||
- Language == dwarf::DW_LANG_C99 ||
- Language == dwarf::DW_LANG_ObjC))
- addUInt(&Buffer, dwarf::DW_AT_prototyped, dwarf::DW_FORM_flag, 1);
+ (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_class_type: {
// Add elements to structure type.
DIArray Elements = CTy.getTypeArray();
-
- // A forward struct declared type may not have elements available.
- unsigned N = Elements.getNumElements();
- if (N == 0)
- break;
-
- // Add elements to structure type.
- for (unsigned i = 0; i < N; ++i) {
+ for (unsigned i = 0, N = Elements.getNumElements(); i < N; ++i) {
DIDescriptor Element = Elements.getElement(i);
DIE *ElemDie = NULL;
if (Element.isSubprogram()) {
else if (SP.isPrivate())
addUInt(ElemDie, dwarf::DW_AT_accessibility, dwarf::DW_FORM_data1,
dwarf::DW_ACCESS_private);
- else
+ else
addUInt(ElemDie, dwarf::DW_AT_accessibility, dwarf::DW_FORM_data1,
dwarf::DW_ACCESS_public);
if (SP.isExplicit())
- addUInt(ElemDie, dwarf::DW_AT_explicit, dwarf::DW_FORM_flag, 1);
- }
- else if (Element.isVariable()) {
- DIVariable DV(Element);
- ElemDie = new DIE(dwarf::DW_TAG_variable);
- addString(ElemDie, dwarf::DW_AT_name, DV.getName());
- addType(ElemDie, DV.getType());
- addUInt(ElemDie, dwarf::DW_AT_declaration, dwarf::DW_FORM_flag, 1);
- addUInt(ElemDie, dwarf::DW_AT_external, dwarf::DW_FORM_flag, 1);
- addSourceLine(ElemDie, DV);
- } else if (Element.isDerivedType())
- ElemDie = createMemberDIE(DIDerivedType(Element));
- else if (Element.isObjCProperty()) {
+ 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);
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, 0,
PropertyAttributes);
DIEEntry *Entry = getDIEEntry(Element);
}
if (CTy.isAppleBlockExtension())
- addUInt(&Buffer, dwarf::DW_AT_APPLE_block, dwarf::DW_FORM_flag, 1);
+ 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);
- }
+ else
+ addToContextOwner(&Buffer, CTy.getContext());
if (CTy.isObjcClassComplete())
- addUInt(&Buffer, dwarf::DW_AT_APPLE_objc_complete_type,
- dwarf::DW_FORM_flag, 1);
+ addFlag(&Buffer, dwarf::DW_AT_APPLE_objc_complete_type);
// Add template parameters to a class, structure or union types.
// FIXME: The support isn't in the metadata for this yet.
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 (Tag == dwarf::DW_TAG_enumeration_type ||
+ Tag == dwarf::DW_TAG_class_type ||
+ Tag == dwarf::DW_TAG_structure_type ||
+ Tag == dwarf::DW_TAG_union_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);
- else {
+ else if (!CTy.isForwardDecl())
// Add zero size if it is not a forward declaration.
- if (CTy.isForwardDecl())
- addUInt(&Buffer, dwarf::DW_AT_declaration, dwarf::DW_FORM_flag, 1);
- else
- addUInt(&Buffer, dwarf::DW_AT_byte_size, 0, 0);
- }
+ addUInt(&Buffer, dwarf::DW_AT_byte_size, 0, 0);
+
+ // If we're a forward decl, say so.
+ if (CTy.isForwardDecl())
+ addFlag(&Buffer, dwarf::DW_AT_declaration);
// Add source line info if available.
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->addTypeUnitType(&Buffer);
}
-/// getOrCreateTemplateTypeParameterDIE - Find existing DIE or create new DIE
+/// getOrCreateTemplateTypeParameterDIE - Find existing DIE or create new DIE
/// for the given DITemplateTypeParameter.
DIE *
CompileUnit::getOrCreateTemplateTypeParameterDIE(DITemplateTypeParameter TP) {
return ParamDIE;
ParamDIE = new DIE(dwarf::DW_TAG_template_type_parameter);
- addType(ParamDIE, TP.getType());
- addString(ParamDIE, dwarf::DW_AT_name, TP.getName());
+ // Add the type if it exists, it could be void and therefore no type.
+ if (TP.getType())
+ addType(ParamDIE, TP.getType());
+ if (!TP.getName().empty())
+ addString(ParamDIE, dwarf::DW_AT_name, TP.getName());
return ParamDIE;
}
-/// getOrCreateTemplateValueParameterDIE - Find existing DIE or create new DIE
+/// getOrCreateTemplateValueParameterDIE - Find existing DIE or create new DIE
/// for the given DITemplateValueParameter.
DIE *
-CompileUnit::getOrCreateTemplateValueParameterDIE(DITemplateValueParameter TPV) {
- DIE *ParamDIE = getDIE(TPV);
+CompileUnit::getOrCreateTemplateValueParameterDIE(DITemplateValueParameter VP) {
+ DIE *ParamDIE = getDIE(VP);
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());
+ ParamDIE = new DIE(VP.getTag());
+
+ // Add the type if there is one, template template and template parameter
+ // packs will not have a type.
+ if (VP.getType())
+ addType(ParamDIE, VP.getType());
+ if (!VP.getName().empty())
+ addString(ParamDIE, dwarf::DW_AT_name, VP.getName());
+ if (Value *Val = VP.getValue()) {
+ if (ConstantInt *CI = dyn_cast<ConstantInt>(Val))
+ addConstantValue(ParamDIE, CI, VP.getType().isUnsignedDIType());
+ else if (GlobalValue *GV = dyn_cast<GlobalValue>(Val)) {
+ // For declaration non-type template parameters (such as global values and
+ // functions)
+ DIEBlock *Block = new (DIEValueAllocator) DIEBlock();
+ addOpAddress(Block, Asm->Mang->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);
+ } else if (VP.getTag() == dwarf::DW_TAG_GNU_template_template_param) {
+ assert(isa<MDString>(Val));
+ addString(ParamDIE, dwarf::DW_AT_GNU_template_name,
+ cast<MDString>(Val)->getString());
+ } else if (VP.getTag() == dwarf::DW_TAG_GNU_template_parameter_pack) {
+ assert(isa<MDNode>(Val));
+ DIArray A(cast<MDNode>(Val));
+ addTemplateParams(*ParamDIE, A);
+ }
+ }
+
return ParamDIE;
}
return NDie;
}
-/// getRealLinkageName - If special LLVM prefix that is used to inform the asm
-/// printer to not emit usual symbol prefix before the symbol name is used then
-/// return linkage name after skipping this special LLVM prefix.
-static StringRef getRealLinkageName(StringRef LinkageName) {
- char One = '\1';
- if (LinkageName.startswith(StringRef(&One, 1)))
- return LinkageName.substr(1);
- return LinkageName;
-}
-
/// getOrCreateSubprogramDIE - Create new DIE using SP.
DIE *CompileUnit::getOrCreateSubprogramDIE(DISubprogram SP) {
DIE *SPDie = getDIE(SP);
if (SPDie)
return SPDie;
+ SPDie = new DIE(dwarf::DW_TAG_subprogram);
+
+ // DW_TAG_inlined_subroutine may refer to this DIE.
+ insertDIE(SP, SPDie);
+
DISubprogram SPDecl = SP.getFunctionDeclaration();
DIE *DeclDie = NULL;
if (SPDecl.isSubprogram()) {
DeclDie = getOrCreateSubprogramDIE(SPDecl);
}
- SPDie = new DIE(dwarf::DW_TAG_subprogram);
-
- // DW_TAG_inlined_subroutine may refer to this DIE.
- insertDIE(SP, SPDie);
-
// Add to context owner.
addToContextOwner(SPDie, SP.getContext());
// Add function template parameters.
addTemplateParams(*SPDie, SP.getTemplateParams());
+ // Unfortunately this code needs to stay here instead of below the
+ // AT_specification code in order to work around a bug in older
+ // gdbs that requires the linkage name to resolve multiple template
+ // functions.
+ // TODO: Remove this set of code when we get rid of the old gdb
+ // compatibility.
+ StringRef LinkageName = SP.getLinkageName();
+ if (!LinkageName.empty() && DD->useDarwinGDBCompat())
+ addString(SPDie, dwarf::DW_AT_MIPS_linkage_name,
+ GlobalValue::getRealLinkageName(LinkageName));
+
// If this DIE is going to refer declaration info using AT_specification
// then there is no need to add other attributes.
if (DeclDie) {
return SPDie;
}
- StringRef LinkageName = SP.getLinkageName();
- if (!LinkageName.empty())
+ // Add the linkage name if we have one.
+ if (!LinkageName.empty() && !DD->useDarwinGDBCompat())
addString(SPDie, dwarf::DW_AT_MIPS_linkage_name,
- getRealLinkageName(LinkageName));
+ GlobalValue::getRealLinkageName(LinkageName));
// Constructors and operators for anonymous aggregates do not have names.
if (!SP.getName().empty())
// Add the prototype if we have a prototype and we have a C like
// language.
+ uint16_t Language = DICompileUnit(Node).getLanguage();
if (SP.isPrototyped() &&
(Language == dwarf::DW_LANG_C89 ||
Language == dwarf::DW_LANG_C99 ||
Language == dwarf::DW_LANG_ObjC))
- addUInt(SPDie, dwarf::DW_AT_prototyped, dwarf::DW_FORM_flag, 1);
+ addFlag(SPDie, dwarf::DW_AT_prototyped);
- // Add Return Type.
+ // Add Return Type. A void return type will not have a type.
DICompositeType SPTy = SP.getType();
- DIArray Args = SPTy.getTypeArray();
- unsigned SPTag = SPTy.getTag();
+ assert(SPTy.getTag() == dwarf::DW_TAG_subroutine_type &&
+ "the type of a subprogram should be a subroutine");
- if (Args.getNumElements() == 0 || SPTag != dwarf::DW_TAG_subroutine_type)
- addType(SPDie, SPTy);
- else
+ DIArray Args = SPTy.getTypeArray();
+ if (Args.getElement(0))
addType(SPDie, DIType(Args.getElement(0)));
unsigned VK = SP.getVirtuality();
}
if (!SP.isDefinition()) {
- addUInt(SPDie, dwarf::DW_AT_declaration, dwarf::DW_FORM_flag, 1);
-
+ addFlag(SPDie, dwarf::DW_AT_declaration);
+
// Add arguments. Do not add arguments for subprogram definition. They will
// be handled while processing variables.
- DICompositeType SPTy = SP.getType();
- DIArray Args = SPTy.getTypeArray();
- unsigned SPTag = SPTy.getTag();
-
- if (SPTag == dwarf::DW_TAG_subroutine_type)
- for (unsigned i = 1, N = Args.getNumElements(); i < N; ++i) {
- DIE *Arg = new DIE(dwarf::DW_TAG_formal_parameter);
- DIType ATy = DIType(DIType(Args.getElement(i)));
- addType(Arg, ATy);
- if (ATy.isArtificial())
- addUInt(Arg, dwarf::DW_AT_artificial, dwarf::DW_FORM_flag, 1);
- SPDie->addChild(Arg);
- }
+ 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())
- addUInt(SPDie, dwarf::DW_AT_artificial, dwarf::DW_FORM_flag, 1);
+ addFlag(SPDie, dwarf::DW_AT_artificial);
if (!SP.isLocalToUnit())
- addUInt(SPDie, dwarf::DW_AT_external, dwarf::DW_FORM_flag, 1);
+ addFlag(SPDie, dwarf::DW_AT_external);
if (SP.isOptimized())
- addUInt(SPDie, dwarf::DW_AT_APPLE_optimized, dwarf::DW_FORM_flag, 1);
+ 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;
DIGlobalVariable GV(N);
- if (!GV.Verify())
+ if (!GV.isGlobalVariable())
return;
- DIE *VariableDIE = new DIE(GV.getTag());
- // Add to map.
- insertDIE(N, VariableDIE);
-
- // Add name.
- addString(VariableDIE, dwarf::DW_AT_name, GV.getDisplayName());
- StringRef LinkageName = GV.getLinkageName();
- bool isGlobalVariable = GV.getGlobal() != NULL;
- if (!LinkageName.empty() && isGlobalVariable)
- addString(VariableDIE, dwarf::DW_AT_MIPS_linkage_name,
- getRealLinkageName(LinkageName));
- // Add type.
+ DIDescriptor GVContext = GV.getContext();
DIType GTy = GV.getType();
- addType(VariableDIE, GTy);
- // Add scoping info.
- if (!GV.isLocalToUnit())
- addUInt(VariableDIE, dwarf::DW_AT_external, dwarf::DW_FORM_flag, 1);
+ // If this is a static data member definition, some attributes belong
+ // to the declaration DIE.
+ DIE *VariableDIE = NULL;
+ bool IsStaticMember = false;
+ DIDerivedType SDMDecl = GV.getStaticDataMemberDeclaration();
+ if (SDMDecl.Verify()) {
+ assert(SDMDecl.isStaticMember() && "Expected static member decl");
+ // We need the declaration DIE that is in the static member's class.
+ // But that class might not exist in the DWARF yet.
+ // Creating the class will create the static member decl DIE.
+ getOrCreateContextDIE(SDMDecl.getContext());
+ VariableDIE = getDIE(SDMDecl);
+ assert(VariableDIE && "Static member decl has no context?");
+ IsStaticMember = true;
+ }
+
+ // 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());
+ // Add to map.
+ insertDIE(N, VariableDIE);
+
+ // Add name and type.
+ addString(VariableDIE, dwarf::DW_AT_name, GV.getDisplayName());
+ addType(VariableDIE, GTy);
+
+ // Add scoping info.
+ if (!GV.isLocalToUnit()) {
+ addFlag(VariableDIE, dwarf::DW_AT_external);
+ addGlobalName(GV.getName(), VariableDIE);
+ }
+
+ // Add line number info.
+ addSourceLine(VariableDIE, GV);
+ // Add to context owner.
+ addToContextOwner(VariableDIE, GVContext);
+ }
- // Add line number info.
- addSourceLine(VariableDIE, GV);
- // Add to context owner.
- DIDescriptor GVContext = GV.getContext();
- addToContextOwner(VariableDIE, GVContext);
// Add location.
bool addToAccelTable = false;
DIE *VariableSpecDIE = NULL;
+ bool isGlobalVariable = GV.getGlobal() != NULL;
if (isGlobalVariable) {
addToAccelTable = true;
DIEBlock *Block = new (DIEValueAllocator) DIEBlock();
- addUInt(Block, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_addr);
- addLabel(Block, 0, dwarf::DW_FORM_udata,
- Asm->Mang->getSymbol(GV.getGlobal()));
+ const MCSymbol *Sym = Asm->Mang->getSymbol(GV.getGlobal());
+ if (GV.getGlobal()->isThreadLocal()) {
+ // FIXME: Make this work with -gsplit-dwarf.
+ unsigned PointerSize = Asm->getDataLayout().getPointerSize();
+ assert((PointerSize == 4 || PointerSize == 8) &&
+ "Add support for other sizes if necessary");
+ const MCExpr *Expr =
+ Asm->getObjFileLowering().getDebugThreadLocalSymbol(Sym);
+ // 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,
+ PointerSize == 4 ? dwarf::DW_OP_const4u : dwarf::DW_OP_const8u);
+ // 2) containing the (relocated) address of the TLS variable
+ addExpr(Block, 0, 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));
+ }
+ // 3) followed by a custom OP to tell the debugger about TLS (presumably)
+ addUInt(Block, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_lo_user);
+ } else
+ addOpAddress(Block, Sym);
// Do not create specification DIE if context is either compile unit
// or a subprogram.
if (GVContext && GV.isDefinition() && !GVContext.isCompileUnit() &&
addDIEEntry(VariableSpecDIE, dwarf::DW_AT_specification,
dwarf::DW_FORM_ref4, VariableDIE);
addBlock(VariableSpecDIE, dwarf::DW_AT_location, 0, Block);
- addUInt(VariableDIE, dwarf::DW_AT_declaration, dwarf::DW_FORM_flag,
- 1);
+ // 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);
}
- } else if (const ConstantInt *CI =
- dyn_cast_or_null<ConstantInt>(GV.getConstant()))
- addConstantValue(VariableDIE, CI, GTy.isUnsignedDIType());
- else if (const ConstantExpr *CE = getMergedGlobalExpr(N->getOperand(11))) {
+ // Add linkage name.
+ StringRef LinkageName = GV.getLinkageName();
+ if (!LinkageName.empty()) {
+ // From DWARF4: DIEs to which DW_AT_linkage_name may apply include:
+ // TAG_common_block, TAG_constant, TAG_entry_point, TAG_subprogram and
+ // TAG_variable.
+ addString(IsStaticMember && VariableSpecDIE ?
+ VariableSpecDIE : VariableDIE, dwarf::DW_AT_MIPS_linkage_name,
+ GlobalValue::getRealLinkageName(LinkageName));
+ // In compatibility mode with older gdbs we put the linkage name on both
+ // the TAG_variable DIE and on the TAG_member DIE.
+ if (IsStaticMember && VariableSpecDIE && DD->useDarwinGDBCompat())
+ addString(VariableDIE, dwarf::DW_AT_MIPS_linkage_name,
+ GlobalValue::getRealLinkageName(LinkageName));
+ }
+ } else if (const ConstantInt *CI =
+ dyn_cast_or_null<ConstantInt>(GV.getConstant())) {
+ // AT_const_value was added when the static member was created. To avoid
+ // emitting AT_const_value multiple times, we only add AT_const_value when
+ // it is not a static member.
+ if (!IsStaticMember)
+ addConstantValue(VariableDIE, CI, GTy.isUnsignedDIType());
+ } else if (const ConstantExpr *CE = getMergedGlobalExpr(N->getOperand(11))) {
addToAccelTable = true;
// GV is a merged global.
DIEBlock *Block = new (DIEValueAllocator) DIEBlock();
Value *Ptr = CE->getOperand(0);
- addUInt(Block, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_addr);
- addLabel(Block, 0, dwarf::DW_FORM_udata,
- Asm->Mang->getSymbol(cast<GlobalValue>(Ptr)));
+ 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->getTargetData().getIndexedOffset(Ptr->getType(), Idx));
+ 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 (GV.getLinkageName() != "" && GV.getName() != GV.getLinkageName())
addAccelName(GV.getLinkageName(), AddrDIE);
}
-
- return;
}
/// constructSubrangeDIE - Construct subrange DIE from DISubrange.
-void CompileUnit::constructSubrangeDIE(DIE &Buffer, DISubrange SR, DIE *IndexTy){
+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);
- uint64_t L = SR.getLo();
- uint64_t H = SR.getHi();
- // The L value defines the lower bounds which is typically zero for C/C++. The
- // H value is the upper bounds. Values are 64 bit. H - L + 1 is the size
- // of the array. If L > H then do not emit DW_AT_lower_bound and
- // DW_AT_upper_bound attributes. If L is zero and H is also zero then the
- // array has one element and in such case do not emit lower bound.
+ // The LowerBound value defines the lower bounds which is typically zero for
+ // C/C++. The Count value is the number of elements. Values are 64 bit. If
+ // Count == -1 then the array is unbounded and we do not emit
+ // DW_AT_lower_bound and DW_AT_upper_bound attributes. If LowerBound == 0 and
+ // Count == 0, then the array has zero elements in which case we do not emit
+ // an upper bound.
+ 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)
+ // FIXME: An unbounded array should reference the expression that defines
+ // the array.
+ addUInt(DW_Subrange, dwarf::DW_AT_upper_bound, 0, LowerBound + Count - 1);
- if (L > H) {
- Buffer.addChild(DW_Subrange);
- return;
- }
- if (L)
- addUInt(DW_Subrange, dwarf::DW_AT_lower_bound, 0, L);
- addUInt(DW_Subrange, dwarf::DW_AT_upper_bound, 0, H);
Buffer.addChild(DW_Subrange);
}
void CompileUnit::constructArrayTypeDIE(DIE &Buffer,
DICompositeType *CTy) {
Buffer.setTag(dwarf::DW_TAG_array_type);
- if (CTy->getTag() == dwarf::DW_TAG_vector_type)
- addUInt(&Buffer, dwarf::DW_AT_GNU_vector, dwarf::DW_FORM_flag, 1);
+ if (CTy->isVector())
+ addFlag(&Buffer, dwarf::DW_AT_GNU_vector);
- // Emit derived type.
+ // Emit the element type.
addType(&Buffer, CTy->getTypeDerivedFrom());
- DIArray Elements = CTy->getTypeArray();
// Get an anonymous type for index type.
+ // FIXME: This type should be passed down from the front end
+ // as different languages may have different sizes for indexes.
DIE *IdxTy = getIndexTyDie();
if (!IdxTy) {
// Construct an anonymous type for index type.
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);
}
// Add subranges to array type.
+ 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)
}
/// constructVariableDIE - Construct a DIE for the given DbgVariable.
-DIE *CompileUnit::constructVariableDIE(DbgVariable *DV, bool isScopeAbstract) {
+DIE *CompileUnit::constructVariableDIE(DbgVariable *DV,
+ bool isScopeAbstract) {
StringRef Name = DV->getName();
- if (Name.empty())
- return NULL;
// Translate tag to proper Dwarf tag.
- unsigned Tag = DV->getTag();
+ uint16_t Tag = DV->getTag();
// Define variable debug information entry.
DIE *VariableDie = new DIE(Tag);
addDIEEntry(VariableDie, dwarf::DW_AT_abstract_origin,
dwarf::DW_FORM_ref4, AbsDIE);
else {
- addString(VariableDie, dwarf::DW_AT_name, Name);
+ if (!Name.empty())
+ addString(VariableDie, dwarf::DW_AT_name, Name);
addSourceLine(VariableDie, DV->getVariable());
addType(VariableDie, DV->getType());
}
if (DV->isArtificial())
- addUInt(VariableDie, dwarf::DW_AT_artificial,
- dwarf::DW_FORM_flag, 1);
+ addFlag(VariableDie, dwarf::DW_AT_artificial);
if (isScopeAbstract) {
DV->setDIE(VariableDie);
unsigned Offset = DV->getDotDebugLocOffset();
if (Offset != ~0U) {
- addLabel(VariableDie, dwarf::DW_AT_location,
- dwarf::DW_FORM_data4,
- Asm->GetTempSymbol("debug_loc", Offset));
+ addLabel(VariableDie, dwarf::DW_AT_location, dwarf::DW_FORM_data4,
+ 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()) {
- 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) {
- // If variableDie is not updated then DBG_VALUE instruction does not
- // have valid variable info.
- delete VariableDie;
- return NULL;
- }
+ assert(DVInsn->getNumOperands() == 3);
+ if (DVInsn->getOperand(0).isReg()) {
+ const MachineOperand RegOp = DVInsn->getOperand(0);
+ // If the second operand is an immediate, this is an indirect value.
+ if (DVInsn->getOperand(1).isImm()) {
+ MachineLocation Location(RegOp.getReg(), DVInsn->getOperand(1).getImm());
+ addVariableAddress(*DV, VariableDie, Location);
+ } else if (RegOp.getReg())
+ addVariableAddress(*DV, VariableDie, MachineLocation(RegOp.getReg()));
+ } else if (DVInsn->getOperand(0).isImm())
+ 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(),
+ DV->getType().isUnsignedDIType());
+
DV->setDIE(VariableDie);
return VariableDie;
} else {
if (FI != ~0) {
unsigned FrameReg = 0;
const TargetFrameLowering *TFI = Asm->TM.getFrameLowering();
- int Offset =
+ int Offset =
TFI->getFrameIndexReference(*Asm->MF, FI, FrameReg);
MachineLocation Location(FrameReg, Offset);
- addVariableAddress(DV, VariableDie, Location);
+ addVariableAddress(*DV, VariableDie, Location);
}
}
Offset -= FieldOffset;
// Maybe we need to work from the other end.
- if (Asm->getTargetData().isLittleEndian())
+ if (Asm->getDataLayout().isLittleEndian())
Offset = FieldSize - (Offset + Size);
addUInt(MemberDie, dwarf::DW_AT_bit_offset, 0, Offset);
addUInt(MemberDie, dwarf::DW_AT_accessibility, dwarf::DW_FORM_data1,
dwarf::DW_ACCESS_private);
// Otherwise C++ member and base classes are considered public.
- else
+ else
addUInt(MemberDie, dwarf::DW_AT_accessibility, dwarf::DW_FORM_data1,
dwarf::DW_ACCESS_public);
if (DT.isVirtual())
// Objective-C properties.
if (MDNode *PNode = DT.getObjCProperty())
if (DIEEntry *PropertyDie = getDIEEntry(PNode))
- MemberDie->addValue(dwarf::DW_AT_APPLE_property, dwarf::DW_FORM_ref4,
+ MemberDie->addValue(dwarf::DW_AT_APPLE_property, dwarf::DW_FORM_ref4,
PropertyDie);
- // This is only for backward compatibility.
- 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);
- }
+ if (DT.isArtificial())
+ addFlag(MemberDie, dwarf::DW_AT_artificial);
+
return MemberDie;
}
+
+/// createStaticMemberDIE - Create new DIE for C++ static member.
+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);
+
+ // FIXME: We could omit private if the parent is a class_type, and
+ // public if the parent is something else.
+ 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;
+}
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