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path: root/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
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Diffstat (limited to 'lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp')
-rw-r--r--lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp227
1 files changed, 171 insertions, 56 deletions
diff --git a/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp b/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
index 21cceaf7c3..d9f6b5eb0a 100644
--- a/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
@@ -170,6 +170,42 @@ void CompileUnit::addLabel(DIE *Die, unsigned Attribute, unsigned Form,
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, unsigned Attribute,
+ MCSymbol *Label) {
+ if (!DD->useSplitDwarf()) {
+ if (Label != NULL) {
+ DIEValue *Value = new (DIEValueAllocator) DIELabel(Label);
+ Die->addValue(Attribute, dwarf::DW_FORM_addr, Value);
+ } else {
+ DIEValue *Value = new (DIEValueAllocator) DIEInteger(0);
+ Die->addValue(Attribute, dwarf::DW_FORM_addr, Value);
+ }
+ } else {
+ unsigned idx = DU->getAddrPoolIndex(Label);
+ DIEValue *Value = new (DIEValueAllocator) DIEInteger(idx);
+ Die->addValue(Attribute, dwarf::DW_FORM_GNU_addr_index, Value);
+ }
+}
+
+/// 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, MCSymbol *Sym) {
+
+ if (!DD->useSplitDwarf()) {
+ addUInt(Die, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_addr);
+ addLabel(Die, 0, dwarf::DW_FORM_udata, Sym);
+ } else {
+ unsigned idx = DU->getAddrPoolIndex(Sym);
+ DIEValue *Value = new (DIEValueAllocator) DIEInteger(idx);
+ addUInt(Die, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_GNU_addr_index);
+ Die->addValue(0, dwarf::DW_FORM_GNU_addr_index, Value);
+ }
+}
+
/// addDelta - Add a label delta attribute data and value.
///
void CompileUnit::addDelta(DIE *Die, unsigned Attribute, unsigned Form,
@@ -592,10 +628,21 @@ bool CompileUnit::addConstantFPValue(DIE *Die, const MachineOperand &MO) {
return true;
}
+/// addConstantFPValue - Add constant value entry in variable DIE.
+bool CompileUnit::addConstantFPValue(DIE *Die, const ConstantFP *CFP) {
+ return addConstantValue(Die, CFP->getValueAPF().bitcastToAPInt(), false);
+}
+
/// addConstantValue - Add constant value entry in variable DIE.
bool CompileUnit::addConstantValue(DIE *Die, const ConstantInt *CI,
bool Unsigned) {
- unsigned CIBitWidth = CI->getBitWidth();
+ return addConstantValue(Die, CI->getValue(), Unsigned);
+}
+
+// addConstantValue - Add constant value entry in variable DIE.
+bool CompileUnit::addConstantValue(DIE *Die, const APInt &Val,
+ bool Unsigned) {
+ unsigned CIBitWidth = Val.getBitWidth();
if (CIBitWidth <= 64) {
unsigned form = 0;
switch (CIBitWidth) {
@@ -607,16 +654,15 @@ bool CompileUnit::addConstantValue(DIE *Die, const ConstantInt *CI,
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());
+ addSInt(Die, dwarf::DW_AT_const_value, form, Val.getSExtValue());
return true;
}
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.
@@ -650,18 +696,21 @@ void CompileUnit::addTemplateParams(DIE &Buffer, DIArray TParams) {
}
}
+/// 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);
@@ -864,6 +913,8 @@ void CompileUnit::constructTypeDIE(DIE &Buffer, DICompositeType CTy) {
} 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);
}
}
@@ -905,22 +956,15 @@ void CompileUnit::constructTypeDIE(DIE &Buffer, DICompositeType CTy) {
dwarf::DW_ACCESS_public);
if (SP.isExplicit())
addFlag(ElemDie, dwarf::DW_AT_explicit);
- }
- 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());
- addFlag(ElemDie, dwarf::DW_AT_declaration);
- addFlag(ElemDie, dwarf::DW_AT_external);
- addSourceLine(ElemDie, DV);
} 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
- ElemDie = createMemberDIE(DIDerivedType(Element));
+ } else if (DDTy.isStaticMember())
+ ElemDie = createStaticMemberDIE(DDTy);
+ else
+ ElemDie = createMemberDIE(DDTy);
} else if (Element.isObjCProperty()) {
DIObjCProperty Property(Element);
ElemDie = new DIE(Property.getTag());
@@ -1236,39 +1280,56 @@ void CompileUnit::createGlobalVariableDIE(const MDNode *N) {
if (!GV.Verify())
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())
- addFlag(VariableDIE, dwarf::DW_AT_external);
+ // 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()));
+ addOpAddress(Block, Asm->Mang->getSymbol(GV.getGlobal()));
// Do not create specification DIE if context is either compile unit
// or a subprogram.
if (GVContext && GV.isDefinition() && !GVContext.isCompileUnit() &&
@@ -1278,22 +1339,41 @@ void CompileUnit::createGlobalVariableDIE(const MDNode *N) {
addDIEEntry(VariableSpecDIE, dwarf::DW_AT_specification,
dwarf::DW_FORM_ref4, VariableDIE);
addBlock(VariableSpecDIE, dwarf::DW_AT_location, 0, Block);
- addFlag(VariableDIE, dwarf::DW_AT_declaration);
+ // 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);
}
+ // 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,
+ 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,
+ getRealLinkageName(LinkageName));
+ }
} 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))) {
+ dyn_cast_or_null<ConstantInt>(GV.getConstant())) {
+ // AT_const_value was added when the static memeber 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,
@@ -1618,3 +1698,38 @@ DIE *CompileUnit::createMemberDIE(DIDerivedType DT) {
}
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;
+}
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2025-04-27 19:45:04 +0000