#include "llvm/ADT/StringExtras.h"
#include "llvm/ADT/UniqueVector.h"
#include "llvm/Module.h"
-#include "llvm/Type.h"
+#include "llvm/DerivedTypes.h"
#include "llvm/CodeGen/AsmPrinter.h"
#include "llvm/CodeGen/MachineModuleInfo.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineLocation.h"
+#include "llvm/Analysis/DebugInfo.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/Dwarf.h"
#include "llvm/Support/CommandLine.h"
using namespace llvm;
using namespace llvm::dwarf;
+static RegisterPass<DwarfWriter>
+X("dwarfwriter", "DWARF Information Writer");
+char DwarfWriter::ID = 0;
+
namespace llvm {
//===----------------------------------------------------------------------===//
class DIE;
class DIEValue;
+//===----------------------------------------------------------------------===//
+/// Utility routines.
+///
+/// getGlobalVariablesUsing - Return all of the GlobalVariables which have the
+/// specified value in their initializer somewhere.
+static void
+getGlobalVariablesUsing(Value *V, std::vector<GlobalVariable*> &Result) {
+ // Scan though value users.
+ for (Value::use_iterator I = V->use_begin(), E = V->use_end(); I != E; ++I) {
+ if (GlobalVariable *GV = dyn_cast<GlobalVariable>(*I)) {
+ // If the user is a GlobalVariable then add to result.
+ Result.push_back(GV);
+ } else if (Constant *C = dyn_cast<Constant>(*I)) {
+ // If the user is a constant variable then scan its users
+ getGlobalVariablesUsing(C, Result);
+ }
+ }
+}
+
+/// getGlobalVariablesUsing - Return all of the GlobalVariables that use the
+/// named GlobalVariable.
+static void
+getGlobalVariablesUsing(Module &M, const std::string &RootName,
+ std::vector<GlobalVariable*> &Result) {
+ std::vector<const Type*> FieldTypes;
+ FieldTypes.push_back(Type::Int32Ty);
+ FieldTypes.push_back(Type::Int32Ty);
+
+ // Get the GlobalVariable root.
+ GlobalVariable *UseRoot = M.getGlobalVariable(RootName,
+ StructType::get(FieldTypes));
+
+ // If present and linkonce then scan for users.
+ if (UseRoot && UseRoot->hasLinkOnceLinkage())
+ getGlobalVariablesUsing(UseRoot, Result);
+}
+
//===----------------------------------------------------------------------===//
/// DWLabel - Labels are used to track locations in the assembler file.
/// Labels appear in the form @verbatim <prefix><Tag><Number> @endverbatim,
/// DescToDieMap - Tracks the mapping of unit level debug informaton
/// descriptors to debug information entries.
std::map<DebugInfoDesc *, DIE *> DescToDieMap;
+ DenseMap<GlobalVariable *, DIE *> GVToDieMap;
/// DescToDIEntryMap - Tracks the mapping of unit level debug informaton
/// descriptors to debug information entries using a DIEntry proxy.
std::map<DebugInfoDesc *, DIEntry *> DescToDIEntryMap;
+ DenseMap<GlobalVariable *, DIEntry *> GVToDIEntryMap;
/// Globals - A map of globally visible named entities for this unit.
///
std::vector<DIE *> Dies;
public:
+ CompileUnit(unsigned I, DIE *D)
+ : ID(I), Die(D), DescToDieMap(), GVToDieMap(), DescToDIEntryMap(),
+ GVToDIEntryMap(), Globals(), DiesSet(InitDiesSetSize), Dies()
+ {}
+
CompileUnit(CompileUnitDesc *CUD, unsigned I, DIE *D)
: Desc(CUD)
, ID(I)
, Die(D)
, DescToDieMap()
+ , GVToDieMap()
, DescToDIEntryMap()
+ , GVToDIEntryMap()
, Globals()
, DiesSet(InitDiesSetSize)
, Dies()
DIE *&getDieMapSlotFor(DebugInfoDesc *DID) {
return DescToDieMap[DID];
}
+ DIE *&getDieMapSlotFor(GlobalVariable *GV) {
+ return GVToDieMap[GV];
+ }
/// getDIEntrySlotFor - Returns the debug information entry proxy slot for the
/// specified debug descriptor.
DIEntry *&getDIEntrySlotFor(DebugInfoDesc *DID) {
return DescToDIEntryMap[DID];
}
+ DIEntry *&getDIEntrySlotFor(GlobalVariable *GV) {
+ return GVToDIEntryMap[GV];
+ }
/// AddDie - Adds or interns the DIE to the compile unit.
///
}
// If advancing cfa.
- if (Dst.isRegister() && Dst.getRegister() == MachineLocation::VirtualFP) {
- if (!Src.isRegister()) {
- if (Src.getRegister() == MachineLocation::VirtualFP) {
+ if (Dst.isReg() && Dst.getReg() == MachineLocation::VirtualFP) {
+ if (!Src.isReg()) {
+ if (Src.getReg() == MachineLocation::VirtualFP) {
Asm->EmitInt8(DW_CFA_def_cfa_offset);
Asm->EOL("DW_CFA_def_cfa_offset");
} else {
Asm->EmitInt8(DW_CFA_def_cfa);
Asm->EOL("DW_CFA_def_cfa");
- Asm->EmitULEB128Bytes(RI->getDwarfRegNum(Src.getRegister(), isEH));
+ Asm->EmitULEB128Bytes(RI->getDwarfRegNum(Src.getReg(), isEH));
Asm->EOL("Register");
}
} else {
assert(0 && "Machine move no supported yet.");
}
- } else if (Src.isRegister() &&
- Src.getRegister() == MachineLocation::VirtualFP) {
- if (Dst.isRegister()) {
+ } else if (Src.isReg() &&
+ Src.getReg() == MachineLocation::VirtualFP) {
+ if (Dst.isReg()) {
Asm->EmitInt8(DW_CFA_def_cfa_register);
Asm->EOL("DW_CFA_def_cfa_register");
- Asm->EmitULEB128Bytes(RI->getDwarfRegNum(Dst.getRegister(), isEH));
+ Asm->EmitULEB128Bytes(RI->getDwarfRegNum(Dst.getReg(), isEH));
Asm->EOL("Register");
} else {
assert(0 && "Machine move no supported yet.");
}
} else {
- unsigned Reg = RI->getDwarfRegNum(Src.getRegister(), isEH);
+ unsigned Reg = RI->getDwarfRegNum(Src.getReg(), isEH);
int Offset = Dst.getOffset() / stackGrowth;
if (Offset < 0) {
};
+//===----------------------------------------------------------------------===//
+/// SourceLineInfo - This class is used to record source line correspondence.
+///
+class SrcLineInfo {
+ unsigned Line; // Source line number.
+ unsigned Column; // Source column.
+ unsigned SourceID; // Source ID number.
+ unsigned LabelID; // Label in code ID number.
+public:
+ SrcLineInfo(unsigned L, unsigned C, unsigned S, unsigned I)
+ : Line(L), Column(C), SourceID(S), LabelID(I) {}
+
+ // Accessors
+ unsigned getLine() const { return Line; }
+ unsigned getColumn() const { return Column; }
+ unsigned getSourceID() const { return SourceID; }
+ unsigned getLabelID() const { return LabelID; }
+};
+
+
+//===----------------------------------------------------------------------===//
+/// SrcFileInfo - This class is used to track source information.
+///
+class SrcFileInfo {
+ unsigned DirectoryID; // Directory ID number.
+ std::string Name; // File name (not including directory.)
+public:
+ SrcFileInfo(unsigned D, const std::string &N) : DirectoryID(D), Name(N) {}
+
+ // Accessors
+ unsigned getDirectoryID() const { return DirectoryID; }
+ const std::string &getName() const { return Name; }
+
+ /// operator== - Used by UniqueVector to locate entry.
+ ///
+ bool operator==(const SourceFileInfo &SI) const {
+ return getDirectoryID() == SI.getDirectoryID() && getName() == SI.getName();
+ }
+
+ /// operator< - Used by UniqueVector to locate entry.
+ ///
+ bool operator<(const SrcFileInfo &SI) const {
+ return getDirectoryID() < SI.getDirectoryID() ||
+ (getDirectoryID() == SI.getDirectoryID() && getName() < SI.getName());
+ }
+};
+
+//===----------------------------------------------------------------------===//
+/// DbgVariable - This class is used to track local variable information.
+///
+class DbgVariable {
+private:
+ DIVariable *Var; // Variable Descriptor.
+ unsigned FrameIndex; // Variable frame index.
+
+public:
+ DbgVariable(DIVariable *V, unsigned I) : Var(V), FrameIndex(I) {}
+
+ // Accessors.
+ DIVariable *getVariable() const { return Var; }
+ unsigned getFrameIndex() const { return FrameIndex; }
+};
+
+//===----------------------------------------------------------------------===//
+/// DbgScope - This class is used to track scope information.
+///
+class DbgScope {
+private:
+ DbgScope *Parent; // Parent to this scope.
+ DIDescriptor *Desc; // Debug info descriptor for scope.
+ // Either subprogram or block.
+ unsigned StartLabelID; // Label ID of the beginning of scope.
+ unsigned EndLabelID; // Label ID of the end of scope.
+ SmallVector<DbgScope *, 8> Scopes; // Scopes defined in scope.
+ SmallVector<DbgVariable *, 32> Variables;// Variables declared in scope.
+
+public:
+ DbgScope(DbgScope *P, DIDescriptor *D)
+ : Parent(P), Desc(D), StartLabelID(0), EndLabelID(0), Scopes(), Variables()
+ {}
+ ~DbgScope();
+
+ // Accessors.
+ DbgScope *getParent() const { return Parent; }
+ DIDescriptor *getDesc() const { return Desc; }
+ unsigned getStartLabelID() const { return StartLabelID; }
+ unsigned getEndLabelID() const { return EndLabelID; }
+ SmallVector<DbgScope *, 8> &getScopes() { return Scopes; }
+ SmallVector<DbgVariable *, 32> &getVariables() { return Variables; }
+ void setStartLabelID(unsigned S) { StartLabelID = S; }
+ void setEndLabelID(unsigned E) { EndLabelID = E; }
+
+ /// AddScope - Add a scope to the scope.
+ ///
+ void AddScope(DbgScope *S) { Scopes.push_back(S); }
+
+ /// AddVariable - Add a variable to the scope.
+ ///
+ void AddVariable(DbgVariable *V) { Variables.push_back(V); }
+};
+
//===----------------------------------------------------------------------===//
/// DwarfDebug - Emits Dwarf debug directives.
///
/// CompileUnits - All the compile units involved in this build. The index
/// of each entry in this vector corresponds to the sources in MMI.
std::vector<CompileUnit *> CompileUnits;
+ DenseMap<Value *, CompileUnit *> DW_CUs;
/// AbbreviationsSet - Used to uniquely define abbreviations.
///
/// ValuesSet - Used to uniquely define values.
///
+ // Directories - Uniquing vector for directories.
+ UniqueVector<std::string> Directories;
+
+ // SourceFiles - Uniquing vector for source files.
+ UniqueVector<SrcFileInfo> SrcFiles;
+
+ // Lines - List of of source line correspondence.
+ std::vector<SrcLineInfo> Lines;
+
FoldingSet<DIEValue> ValuesSet;
/// Values - A list of all the unique values in use.
/// SectionMap - Provides a unique id per text section.
///
- UniqueVector<std::string> SectionMap;
+ UniqueVector<const Section*> SectionMap;
/// SectionSourceLines - Tracks line numbers per text section.
///
///
bool shouldEmit;
+ // RootScope - Top level scope for the current function.
+ //
+ DbgScope *RootDbgScope;
+
+ // DbgScopeMap - Tracks the scopes in the current function.
+ DenseMap<GlobalVariable *, DbgScope *> DbgScopeMap;
+
+ // DbgLabelIDList - One entry per assigned label. Normally the entry is equal to
+ // the list index(+1). If the entry is zero then the label has been deleted.
+ // Any other value indicates the label has been deleted by is mapped to
+ // another label.
+ SmallVector<unsigned, 32> DbgLabelIDList;
+
+ /// NextLabelID - Return the next unique label id.
+ ///
+ unsigned NextLabelID() {
+ unsigned ID = (unsigned)DbgLabelIDList.size() + 1;
+ DbgLabelIDList.push_back(ID);
+ return ID;
+ }
+
+ /// RemapLabel - Indicate that a label has been merged into another.
+ ///
+ void RemapLabel(unsigned OldLabelID, unsigned NewLabelID) {
+ assert(0 < OldLabelID && OldLabelID <= DbgLabelIDList.size() &&
+ "Old label ID out of range.");
+ assert(NewLabelID <= DbgLabelIDList.size() &&
+ "New label ID out of range.");
+ DbgLabelIDList[OldLabelID - 1] = NewLabelID;
+ }
+
+ /// MappedLabel - Find out the label's final ID. Zero indicates deletion.
+ /// ID != Mapped ID indicates that the label was folded into another label.
+ unsigned MappedLabel(unsigned LabelID) const {
+ assert(LabelID <= DbgLabelIDList.size() && "Debug label ID out of range.");
+ return LabelID ? DbgLabelIDList[LabelID - 1] : 0;
+ }
+
struct FunctionDebugFrameInfo {
unsigned Number;
std::vector<MachineMove> Moves;
}
}
+ /// AddSourceLine - Add location information to specified debug information
+ /// entry.
+ void AddSourceLine(DIE *Die, DIVariable *V) {
+ unsigned FileID = 0;
+ unsigned Line = V->getLineNumber();
+ if (V->getVersion() < DIDescriptor::Version7) {
+ // Version6 or earlier. Use compile unit info to get file id.
+ CompileUnit *Unit = FindCompileUnit(V->getCompileUnit());
+ FileID = Unit->getID();
+ } else {
+ // Version7 or newer, use filename and directory info from DIVariable
+ // directly.
+ unsigned DID = Directories.idFor(V->getDirectory());
+ FileID = SrcFiles.idFor(SrcFileInfo(DID, V->getFilename()));
+ }
+ AddUInt(Die, DW_AT_decl_file, 0, FileID);
+ AddUInt(Die, DW_AT_decl_line, 0, Line);
+ }
+
+ /// AddSourceLine - Add location information to specified debug information
+ /// entry.
+ void AddSourceLine(DIE *Die, DIGlobal *G) {
+ unsigned FileID = 0;
+ unsigned Line = G->getLineNumber();
+ if (G->getVersion() < DIDescriptor::Version7) {
+ // Version6 or earlier. Use compile unit info to get file id.
+ CompileUnit *Unit = FindCompileUnit(G->getCompileUnit());
+ FileID = Unit->getID();
+ } else {
+ // Version7 or newer, use filename and directory info from DIGlobal
+ // directly.
+ unsigned DID = Directories.idFor(G->getDirectory());
+ FileID = SrcFiles.idFor(SrcFileInfo(DID, G->getFilename()));
+ }
+ AddUInt(Die, DW_AT_decl_file, 0, FileID);
+ AddUInt(Die, DW_AT_decl_line, 0, Line);
+ }
+
+ void AddSourceLine(DIE *Die, DIType *G) {
+ unsigned FileID = 0;
+ unsigned Line = G->getLineNumber();
+ if (G->getVersion() < DIDescriptor::Version7) {
+ // Version6 or earlier. Use compile unit info to get file id.
+ CompileUnit *Unit = FindCompileUnit(G->getCompileUnit());
+ FileID = Unit->getID();
+ } else {
+ // Version7 or newer, use filename and directory info from DIGlobal
+ // directly.
+ unsigned DID = Directories.idFor(G->getDirectory());
+ FileID = SrcFiles.idFor(SrcFileInfo(DID, G->getFilename()));
+ }
+ AddUInt(Die, DW_AT_decl_file, 0, FileID);
+ AddUInt(Die, DW_AT_decl_line, 0, Line);
+ }
+
/// AddAddress - Add an address attribute to a die based on the location
/// provided.
void AddAddress(DIE *Die, unsigned Attribute,
const MachineLocation &Location) {
- unsigned Reg = RI->getDwarfRegNum(Location.getRegister(), false);
+ unsigned Reg = RI->getDwarfRegNum(Location.getReg(), false);
DIEBlock *Block = new DIEBlock();
- if (Location.isRegister()) {
+ if (Location.isReg()) {
if (Reg < 32) {
AddUInt(Block, 0, DW_FORM_data1, DW_OP_reg0 + Reg);
} else {
void AddBasicType(DIE *Entity, CompileUnit *Unit,
const std::string &Name,
unsigned Encoding, unsigned Size) {
- DIE *Die = ConstructBasicType(Unit, Name, Encoding, Size);
- AddDIEntry(Entity, DW_AT_type, DW_FORM_ref4, Die);
- }
- /// ConstructBasicType - Construct a new basic type.
- ///
- DIE *ConstructBasicType(CompileUnit *Unit,
- const std::string &Name,
- unsigned Encoding, unsigned Size) {
DIE Buffer(DW_TAG_base_type);
AddUInt(&Buffer, DW_AT_byte_size, 0, Size);
AddUInt(&Buffer, DW_AT_encoding, DW_FORM_data1, Encoding);
if (!Name.empty()) AddString(&Buffer, DW_AT_name, DW_FORM_string, Name);
- return Unit->AddDie(Buffer);
+ DIE *BasicTypeDie = Unit->AddDie(Buffer);
+ AddDIEntry(Entity, DW_AT_type, DW_FORM_ref4, BasicTypeDie);
}
/// AddPointerType - Add a new pointer type attribute to the specified entity.
///
void AddPointerType(DIE *Entity, CompileUnit *Unit, const std::string &Name) {
- DIE *Die = ConstructPointerType(Unit, Name);
- AddDIEntry(Entity, DW_AT_type, DW_FORM_ref4, Die);
- }
-
- /// ConstructPointerType - Construct a new pointer type.
- ///
- DIE *ConstructPointerType(CompileUnit *Unit, const std::string &Name) {
DIE Buffer(DW_TAG_pointer_type);
AddUInt(&Buffer, DW_AT_byte_size, 0, TD->getPointerSize());
if (!Name.empty()) AddString(&Buffer, DW_AT_name, DW_FORM_string, Name);
- return Unit->AddDie(Buffer);
+ DIE *PointerTypeDie = Unit->AddDie(Buffer);
+ AddDIEntry(Entity, DW_AT_type, DW_FORM_ref4, PointerTypeDie);
}
/// AddType - Add a new type attribute to the specified entity.
}
}
+ /// AddType - Add a new type attribute to the specified entity.
+ void AddType(CompileUnit *DW_Unit, DIE *Entity, DIType Ty) {
+ if (Ty.isNull()) {
+ AddBasicType(Entity, DW_Unit, "", DW_ATE_signed, sizeof(int32_t));
+ return;
+ }
+
+ // Check for pre-existence.
+ DIEntry *&Slot = DW_Unit->getDIEntrySlotFor(Ty.getGV());
+ // If it exists then use the existing value.
+ if (Slot) {
+ Entity->AddValue(DW_AT_type, DW_FORM_ref4, Slot);
+ return;
+ }
+
+ // Set up proxy.
+ Slot = NewDIEntry();
+
+ // Construct type.
+ DIE Buffer(DW_TAG_base_type);
+ if (DIBasicType *BT = dyn_cast<DIBasicType>(&Ty))
+ ConstructTypeDIE(DW_Unit, Buffer, BT);
+ else if (DIDerivedType *DT = dyn_cast<DIDerivedType>(&Ty))
+ ConstructTypeDIE(DW_Unit, Buffer, DT);
+ else if (DICompositeType *CT = dyn_cast<DICompositeType>(&Ty))
+ ConstructTypeDIE(DW_Unit, Buffer, CT);
+
+ // Add debug information entry to entity and unit.
+ DIE *Die = DW_Unit->AddDie(Buffer);
+ SetDIEntry(Slot, Die);
+ Entity->AddValue(DW_AT_type, DW_FORM_ref4, Slot);
+ }
+
+ /// ConstructTypeDIE - Construct basic type die from DIBasicType.
+ void ConstructTypeDIE(CompileUnit *DW_Unit, DIE &Buffer,
+ DIBasicType *BTy) {
+
+ // Get core information.
+ const std::string &Name = BTy->getName();
+ Buffer.setTag(DW_TAG_base_type);
+ AddUInt(&Buffer, DW_AT_encoding, DW_FORM_data1, BTy->getEncoding());
+ // Add name if not anonymous or intermediate type.
+ if (!Name.empty())
+ AddString(&Buffer, DW_AT_name, DW_FORM_string, Name);
+ uint64_t Size = BTy->getSizeInBits() >> 3;
+ AddUInt(&Buffer, DW_AT_byte_size, 0, Size);
+ }
+
+ /// ConstructTypeDIE - Construct derived type die from DIDerivedType.
+ void ConstructTypeDIE(CompileUnit *DW_Unit, DIE &Buffer,
+ DIDerivedType *DTy) {
+
+ // Get core information.
+ const std::string &Name = DTy->getName();
+ uint64_t Size = DTy->getSizeInBits() >> 3;
+ unsigned Tag = DTy->getTag();
+ // FIXME - Workaround for templates.
+ if (Tag == DW_TAG_inheritance) Tag = DW_TAG_reference_type;
+
+ Buffer.setTag(Tag);
+ // Map to main type, void will not have a type.
+ DIType FromTy = DTy->getTypeDerivedFrom();
+ AddType(DW_Unit, &Buffer, FromTy);
+
+ // Add name if not anonymous or intermediate type.
+ if (!Name.empty()) AddString(&Buffer, DW_AT_name, DW_FORM_string, Name);
+
+ // Add size if non-zero (derived types might be zero-sized.)
+ if (Size)
+ AddUInt(&Buffer, DW_AT_byte_size, 0, Size);
+
+ // Add source line info if available and TyDesc is not a forward
+ // declaration.
+ // FIXME - Enable this. if (!DTy->isForwardDecl())
+ // FIXME - Enable this. AddSourceLine(&Buffer, *DTy);
+ }
+
+ /// ConstructTypeDIE - Construct type DIE from DICompositeType.
+ void ConstructTypeDIE(CompileUnit *DW_Unit, DIE &Buffer,
+ DICompositeType *CTy) {
+
+ // Get core information.
+ const std::string &Name = CTy->getName();
+ uint64_t Size = CTy->getSizeInBits() >> 3;
+ unsigned Tag = CTy->getTag();
+ switch (Tag) {
+ case DW_TAG_vector_type:
+ case DW_TAG_array_type:
+ ConstructArrayTypeDIE(DW_Unit, Buffer, CTy);
+ break;
+ //FIXME - Enable this.
+ // case DW_TAG_enumeration_type:
+ // DIArray Elements = CTy->getTypeArray();
+ // // Add enumerators to enumeration type.
+ // for (unsigned i = 0, N = Elements.getNumElements(); i < N; ++i)
+ // ConstructEnumTypeDIE(Buffer, &Elements.getElement(i));
+ // break;
+ case DW_TAG_subroutine_type:
+ {
+ // Add prototype flag.
+ AddUInt(&Buffer, DW_AT_prototyped, DW_FORM_flag, 1);
+ DIArray Elements = CTy->getTypeArray();
+ // Add return type.
+ DIDescriptor RTy = Elements.getElement(0);
+ if (DIBasicType *BT = dyn_cast<DIBasicType>(&RTy))
+ AddType(DW_Unit, &Buffer, *BT);
+ else if (DIDerivedType *DT = dyn_cast<DIDerivedType>(&RTy))
+ AddType(DW_Unit, &Buffer, *DT);
+ else if (DICompositeType *CT = dyn_cast<DICompositeType>(&RTy))
+ AddType(DW_Unit, &Buffer, *CT);
+
+ //AddType(DW_Unit, &Buffer, Elements.getElement(0));
+ // Add arguments.
+ for (unsigned i = 1, N = Elements.getNumElements(); i < N; ++i) {
+ DIE *Arg = new DIE(DW_TAG_formal_parameter);
+ DIDescriptor Ty = Elements.getElement(i);
+ if (DIBasicType *BT = dyn_cast<DIBasicType>(&Ty))
+ AddType(DW_Unit, &Buffer, *BT);
+ else if (DIDerivedType *DT = dyn_cast<DIDerivedType>(&Ty))
+ AddType(DW_Unit, &Buffer, *DT);
+ else if (DICompositeType *CT = dyn_cast<DICompositeType>(&Ty))
+ AddType(DW_Unit, &Buffer, *CT);
+ Buffer.AddChild(Arg);
+ }
+ }
+ break;
+ case DW_TAG_structure_type:
+ case DW_TAG_union_type:
+ {
+ // Add elements to structure type.
+ DIArray Elements = CTy->getTypeArray();
+ // Add elements to structure type.
+ for (unsigned i = 0, N = Elements.getNumElements(); i < N; ++i) {
+ DIDescriptor Element = Elements.getElement(i);
+ if (DISubprogram *SP = dyn_cast<DISubprogram>(&Element))
+ ConstructFieldTypeDIE(DW_Unit, Buffer, SP);
+ else if (DIDerivedType *DT = dyn_cast<DIDerivedType>(&Element))
+ ConstructFieldTypeDIE(DW_Unit, Buffer, DT);
+ else if (DIGlobalVariable *GV = dyn_cast<DIGlobalVariable>(&Element))
+ ConstructFieldTypeDIE(DW_Unit, Buffer, GV);
+ }
+ }
+ break;
+ default:
+ break;
+ }
+
+ // Add name if not anonymous or intermediate type.
+ if (!Name.empty()) AddString(&Buffer, DW_AT_name, DW_FORM_string, Name);
+
+ // Add size if non-zero (derived types might be zero-sized.)
+ if (Size)
+ AddUInt(&Buffer, DW_AT_byte_size, 0, Size);
+ else {
+ // Add zero size even if it is not a forward declaration.
+ // FIXME - Enable this.
+ // if (!CTy->isDefinition())
+ // AddUInt(&Buffer, DW_AT_declaration, DW_FORM_flag, 1);
+ // else
+ // AddUInt(&Buffer, DW_AT_byte_size, 0, 0);
+ }
+
+ // Add source line info if available and TyDesc is not a forward
+ // declaration.
+ // FIXME - Enable this.
+ // if (CTy->isForwardDecl())
+ // AddSourceLine(&Buffer, *CTy);
+ }
+
+ // ConstructSubrangeDIE - Construct subrange DIE from DISubrange.
+ void ConstructSubrangeDIE (DIE &Buffer, DISubrange *SR, DIE *IndexTy) {
+ int64_t L = SR->getLo();
+ int64_t H = SR->getHi();
+ DIE *DW_Subrange = new DIE(DW_TAG_subrange_type);
+ if (L != H) {
+ AddDIEntry(DW_Subrange, DW_AT_type, DW_FORM_ref4, IndexTy);
+ if (L)
+ AddSInt(DW_Subrange, DW_AT_lower_bound, 0, L);
+ AddSInt(DW_Subrange, DW_AT_upper_bound, 0, H);
+ }
+ Buffer.AddChild(DW_Subrange);
+ }
+
+ /// ConstructArrayTypeDIE - Construct array type DIE from DICompositeType.
+ void ConstructArrayTypeDIE(CompileUnit *DW_Unit, DIE &Buffer,
+ DICompositeType *CTy) {
+ Buffer.setTag(DW_TAG_array_type);
+ if (CTy->getTag() == DW_TAG_vector_type)
+ AddUInt(&Buffer, DW_AT_GNU_vector, DW_FORM_flag, 1);
+
+ DIArray Elements = CTy->getTypeArray();
+ // FIXME - Enable this.
+ AddType(DW_Unit, &Buffer, CTy->getTypeDerivedFrom());
+
+ // Construct an anonymous type for index type.
+ DIE IdxBuffer(DW_TAG_base_type);
+ AddUInt(&IdxBuffer, DW_AT_byte_size, 0, sizeof(int32_t));
+ AddUInt(&IdxBuffer, DW_AT_encoding, DW_FORM_data1, DW_ATE_signed);
+ DIE *IndexTy = DW_Unit->AddDie(IdxBuffer);
+
+ // Add subranges to array type.
+ for (unsigned i = 0, N = Elements.getNumElements(); i < N; ++i) {
+ DIDescriptor Element = Elements.getElement(i);
+ if (DISubrange *SR = dyn_cast<DISubrange>(&Element))
+ ConstructSubrangeDIE(Buffer, SR, IndexTy);
+ }
+ }
+
+ /// ConstructEnumTypeDIE - Construct enum type DIE from
+ /// DIEnumerator.
+ void ConstructEnumTypeDIE(CompileUnit *DW_Unit,
+ DIE &Buffer, DIEnumerator *ETy) {
+
+ DIE *Enumerator = new DIE(DW_TAG_enumerator);
+ AddString(Enumerator, DW_AT_name, DW_FORM_string, ETy->getName());
+ int64_t Value = ETy->getEnumValue();
+ AddSInt(Enumerator, DW_AT_const_value, DW_FORM_sdata, Value);
+ Buffer.AddChild(Enumerator);
+ }
+
+ /// ConstructFieldTypeDIE - Construct variable DIE for a struct field.
+ void ConstructFieldTypeDIE(CompileUnit *DW_Unit,
+ DIE &Buffer, DIGlobalVariable *V) {
+
+ DIE *VariableDie = new DIE(DW_TAG_variable);
+ const std::string &LinkageName = V->getLinkageName();
+ if (!LinkageName.empty())
+ AddString(VariableDie, DW_AT_MIPS_linkage_name, DW_FORM_string,
+ LinkageName);
+ // FIXME - Enable this. AddSourceLine(VariableDie, V);
+ AddType(DW_Unit, VariableDie, V->getType());
+ if (!V->isLocalToUnit())
+ AddUInt(VariableDie, DW_AT_external, DW_FORM_flag, 1);
+ AddUInt(VariableDie, DW_AT_declaration, DW_FORM_flag, 1);
+ Buffer.AddChild(VariableDie);
+ }
+
+ /// ConstructFieldTypeDIE - Construct subprogram DIE for a struct field.
+ void ConstructFieldTypeDIE(CompileUnit *DW_Unit,
+ DIE &Buffer, DISubprogram *SP,
+ bool IsConstructor = false) {
+ DIE *Method = new DIE(DW_TAG_subprogram);
+ AddString(Method, DW_AT_name, DW_FORM_string, SP->getName());
+ const std::string &LinkageName = SP->getLinkageName();
+ if (!LinkageName.empty())
+ AddString(Method, DW_AT_MIPS_linkage_name, DW_FORM_string, LinkageName);
+ // FIXME - Enable this. AddSourceLine(Method, SP);
+
+ DICompositeType MTy = SP->getType();
+ DIArray Args = MTy.getTypeArray();
+
+ // Add Return Type.
+ if (!IsConstructor) {
+ DIDescriptor Ty = Args.getElement(0);
+ if (DIBasicType *BT = dyn_cast<DIBasicType>(&Ty))
+ AddType(DW_Unit, Method, *BT);
+ else if (DIDerivedType *DT = dyn_cast<DIDerivedType>(&Ty))
+ AddType(DW_Unit, Method, *DT);
+ else if (DICompositeType *CT = dyn_cast<DICompositeType>(&Ty))
+ AddType(DW_Unit, Method, *CT);
+ }
+
+ // Add arguments.
+ for (unsigned i = 1, N = Args.getNumElements(); i < N; ++i) {
+ DIE *Arg = new DIE(DW_TAG_formal_parameter);
+ DIDescriptor Ty = Args.getElement(i);
+ if (DIBasicType *BT = dyn_cast<DIBasicType>(&Ty))
+ AddType(DW_Unit, Method, *BT);
+ else if (DIDerivedType *DT = dyn_cast<DIDerivedType>(&Ty))
+ AddType(DW_Unit, Method, *DT);
+ else if (DICompositeType *CT = dyn_cast<DICompositeType>(&Ty))
+ AddType(DW_Unit, Method, *CT);
+ AddUInt(Arg, DW_AT_artificial, DW_FORM_flag, 1); // ???
+ Method->AddChild(Arg);
+ }
+
+ if (!SP->isLocalToUnit())
+ AddUInt(Method, DW_AT_external, DW_FORM_flag, 1);
+ Buffer.AddChild(Method);
+ }
+
+ /// COnstructFieldTypeDIE - Construct derived type DIE for a struct field.
+ void ConstructFieldTypeDIE(CompileUnit *DW_Unit, DIE &Buffer,
+ DIDerivedType *DTy) {
+ unsigned Tag = DTy->getTag();
+ DIE *MemberDie = new DIE(Tag);
+ if (!DTy->getName().empty())
+ AddString(MemberDie, DW_AT_name, DW_FORM_string, DTy->getName());
+ // FIXME - Enable this. AddSourceLine(MemberDie, DTy);
+
+ DIType FromTy = DTy->getTypeDerivedFrom();
+ AddType(DW_Unit, MemberDie, FromTy);
+
+ uint64_t Size = DTy->getSizeInBits();
+ uint64_t Offset = DTy->getOffsetInBits();
+
+ // FIXME Handle bitfields
+
+ // Add size.
+ AddUInt(MemberDie, DW_AT_bit_size, 0, Size);
+ // Add computation for offset.
+ DIEBlock *Block = new DIEBlock();
+ AddUInt(Block, 0, DW_FORM_data1, DW_OP_plus_uconst);
+ AddUInt(Block, 0, DW_FORM_udata, Offset >> 3);
+ AddBlock(MemberDie, DW_AT_data_member_location, 0, Block);
+
+ // FIXME Handle DW_AT_accessibility.
+
+ Buffer.AddChild(MemberDie);
+ }
+
/// ConstructType - Adds all the required attributes to the type.
///
void ConstructType(DIE &Buffer, TypeDesc *TyDesc, CompileUnit *Unit) {
Size = 0;
// Construct an anonymous type for index type.
- DIE *IndexTy = ConstructBasicType(Unit, "", DW_ATE_signed,
- sizeof(int32_t));
+ DIE Buffer(DW_TAG_base_type);
+ AddUInt(&Buffer, DW_AT_byte_size, 0, sizeof(int32_t));
+ AddUInt(&Buffer, DW_AT_encoding, DW_FORM_data1, DW_ATE_signed);
+ DIE *IndexTy = Unit->AddDie(Buffer);
// Add subranges to array type.
- for(unsigned i = 0, N = Elements.size(); i < N; ++i) {
+ for (unsigned i = 0, N = Elements.size(); i < N; ++i) {
SubrangeDesc *SRD = cast<SubrangeDesc>(Elements[i]);
int64_t Lo = SRD->getLo();
int64_t Hi = SRD->getHi();
case DW_TAG_structure_type:
case DW_TAG_union_type: {
// Add elements to structure type.
- for(unsigned i = 0, N = Elements.size(); i < N; ++i) {
+ for (unsigned i = 0, N = Elements.size(); i < N; ++i) {
DebugInfoDesc *Element = Elements[i];
if (DerivedTypeDesc *MemberDesc = dyn_cast<DerivedTypeDesc>(Element)){
// Add field or base class.
-
unsigned Tag = MemberDesc->getTag();
// Extract the basic information.
// Add name if not "".
if (!Name.empty())
AddString(Member, DW_AT_name, DW_FORM_string, Name);
+
// Add location if available.
AddSourceLine(Member, MemberDesc->getFile(), MemberDesc->getLine());
while (FromTy) {
if (FromTy->getTag() != DW_TAG_typedef) {
FieldSize = FromTy->getSize();
- FieldAlign = FromTy->getSize();
+ FieldAlign = FromTy->getAlign();
break;
}
}
// Add arguments.
- for(unsigned i = 1, N = Args.size(); i < N; ++i) {
+ for (unsigned i = 1, N = Args.size(); i < N; ++i) {
DIE *Arg = new DIE(DW_TAG_formal_parameter);
AddType(Arg, cast<TypeDesc>(Args[i]), Unit);
AddUInt(Arg, DW_AT_artificial, DW_FORM_flag, 1);
}
case DW_TAG_enumeration_type: {
// Add enumerators to enumeration type.
- for(unsigned i = 0, N = Elements.size(); i < N; ++i) {
+ for (unsigned i = 0, N = Elements.size(); i < N; ++i) {
EnumeratorDesc *ED = cast<EnumeratorDesc>(Elements[i]);
const std::string &Name = ED->getName();
int64_t Value = ED->getValue();
AddType(&Buffer, dyn_cast<TypeDesc>(Elements[0]), Unit);
// Add arguments.
- for(unsigned i = 1, N = Elements.size(); i < N; ++i) {
+ for (unsigned i = 1, N = Elements.size(); i < N; ++i) {
DIE *Arg = new DIE(DW_TAG_formal_parameter);
AddType(Arg, cast<TypeDesc>(Elements[i]), Unit);
Buffer.AddChild(Arg);
}
}
- // Add size if non-zero (derived types don't have a size.)
- if (Size) AddUInt(&Buffer, DW_AT_byte_size, 0, Size);
// Add name if not anonymous or intermediate type.
if (!Name.empty()) AddString(&Buffer, DW_AT_name, DW_FORM_string, Name);
- // Add source line info if available.
- AddSourceLine(&Buffer, TyDesc->getFile(), TyDesc->getLine());
+
+ // Add size if non-zero (derived types might be zero-sized.)
+ if (Size)
+ AddUInt(&Buffer, DW_AT_byte_size, 0, Size);
+ else if (isa<CompositeTypeDesc>(TyDesc)) {
+ // If TyDesc is a composite type, then add size even if it's zero unless
+ // it's a forward declaration.
+ if (TyDesc->isForwardDecl())
+ AddUInt(&Buffer, DW_AT_declaration, DW_FORM_flag, 1);
+ else
+ AddUInt(&Buffer, DW_AT_byte_size, 0, 0);
+ }
+
+ // Add source line info if available and TyDesc is not a forward
+ // declaration.
+ if (!TyDesc->isForwardDecl())
+ AddSourceLine(&Buffer, TyDesc->getFile(), TyDesc->getLine());
}
/// NewCompileUnit - Create new compile unit and it's debug information entry.
AddString(Die, DW_AT_producer, DW_FORM_string, UnitDesc->getProducer());
AddUInt (Die, DW_AT_language, DW_FORM_data1, UnitDesc->getLanguage());
AddString(Die, DW_AT_name, DW_FORM_string, UnitDesc->getFileName());
- AddString(Die, DW_AT_comp_dir, DW_FORM_string, UnitDesc->getDirectory());
+ if (!UnitDesc->getDirectory().empty())
+ AddString(Die, DW_AT_comp_dir, DW_FORM_string, UnitDesc->getDirectory());
// Construct compile unit.
CompileUnit *Unit = new CompileUnit(UnitDesc, ID, Die);
return Unit;
}
+ /// FindCompileUnit - Get the compile unit for the given descriptor.
+ ///
+ CompileUnit *FindCompileUnit(DICompileUnit Unit) {
+ CompileUnit *DW_Unit = DW_CUs[Unit.getGV()];
+ assert(DW_Unit && "Missing compile unit.");
+ return DW_Unit;
+ }
+
/// NewGlobalVariable - Add a new global variable DIE.
///
DIE *NewGlobalVariable(GlobalVariableDesc *GVD) {
return VariableDie;
}
+ /// NewScopeVariable - Create a new scope variable.
+ ///
+ DIE *NewDbgScopeVariable(DbgVariable *DV, CompileUnit *Unit) {
+ // Get the descriptor.
+ DIVariable *VD = DV->getVariable();
+
+ // Translate tag to proper Dwarf tag. The result variable is dropped for
+ // now.
+ unsigned Tag;
+ switch (VD->getTag()) {
+ case DW_TAG_return_variable: return NULL;
+ case DW_TAG_arg_variable: Tag = DW_TAG_formal_parameter; break;
+ case DW_TAG_auto_variable: // fall thru
+ default: Tag = DW_TAG_variable; break;
+ }
+
+ // Define variable debug information entry.
+ DIE *VariableDie = new DIE(Tag);
+ AddString(VariableDie, DW_AT_name, DW_FORM_string, VD->getName());
+
+ // Add source line info if available.
+ AddSourceLine(VariableDie, VD);
+
+ // Add variable type.
+ AddType(Unit, VariableDie, VD->getType());
+
+ // Add variable address.
+ MachineLocation Location;
+ Location.set(RI->getFrameRegister(*MF),
+ RI->getFrameIndexOffset(*MF, DV->getFrameIndex()));
+ AddAddress(VariableDie, DW_AT_location, Location);
+
+ return VariableDie;
+ }
+
+ unsigned RecordSourceLine(Value *V, unsigned Line, unsigned Col) {
+ CompileUnit *Unit = DW_CUs[V];
+ assert (Unit && "Unable to find CompileUnit");
+ unsigned ID = NextLabelID();
+ Lines.push_back(SrcLineInfo(Line, Col, Unit->getID(), ID));
+ return ID;
+ }
+
+ unsigned getRecordSourceLineCount() {
+ return Lines.size();
+ }
+
+ unsigned RecordSource(const std::string &Directory,
+ const std::string &File) {
+ unsigned DID = Directories.insert(Directory);
+ return SrcFiles.insert(SrcFileInfo(DID,File));
+ }
+
+ /// RecordRegionStart - Indicate the start of a region.
+ ///
+ unsigned RecordRegionStart(GlobalVariable *V) {
+ DbgScope *Scope = getOrCreateScope(V);
+ unsigned ID = NextLabelID();
+ if (!Scope->getStartLabelID()) Scope->setStartLabelID(ID);
+ return ID;
+ }
+
+ /// RecordRegionEnd - Indicate the end of a region.
+ ///
+ unsigned RecordRegionEnd(GlobalVariable *V) {
+ DbgScope *Scope = getOrCreateScope(V);
+ unsigned ID = NextLabelID();
+ Scope->setEndLabelID(ID);
+ return ID;
+ }
+
+ /// RecordVariable - Indicate the declaration of a local variable.
+ ///
+ void RecordVariable(GlobalVariable *GV, unsigned FrameIndex) {
+ DbgScope *Scope = getOrCreateScope(GV);
+ DIVariable *VD = new DIVariable(GV);
+ DbgVariable *DV = new DbgVariable(VD, FrameIndex);
+ Scope->AddVariable(DV);
+ }
+
+ /// getOrCreateScope - Returns the scope associated with the given descriptor.
+ ///
+ DbgScope *getOrCreateScope(GlobalVariable *V) {
+ DbgScope *&Slot = DbgScopeMap[V];
+ if (!Slot) {
+ // FIXME - breaks down when the context is an inlined function.
+ DIDescriptor ParentDesc;
+ DIBlock *DB = new DIBlock(V);
+ if (DIBlock *Block = dyn_cast<DIBlock>(DB)) {
+ ParentDesc = Block->getContext();
+ }
+ DbgScope *Parent = ParentDesc.isNull() ?
+ getOrCreateScope(ParentDesc.getGV()) : NULL;
+ Slot = new DbgScope(Parent, DB);
+ if (Parent) {
+ Parent->AddScope(Slot);
+ } else if (RootDbgScope) {
+ // FIXME - Add inlined function scopes to the root so we can delete
+ // them later. Long term, handle inlined functions properly.
+ RootDbgScope->AddScope(Slot);
+ } else {
+ // First function is top level function.
+ RootDbgScope = Slot;
+ }
+ }
+ return Slot;
+ }
+
+ /// ConstructDbgScope - Construct the components of a scope.
+ ///
+ void ConstructDbgScope(DbgScope *ParentScope,
+ unsigned ParentStartID, unsigned ParentEndID,
+ DIE *ParentDie, CompileUnit *Unit) {
+ // Add variables to scope.
+ SmallVector<DbgVariable *, 32> &Variables = ParentScope->getVariables();
+ for (unsigned i = 0, N = Variables.size(); i < N; ++i) {
+ DIE *VariableDie = NewDbgScopeVariable(Variables[i], Unit);
+ if (VariableDie) ParentDie->AddChild(VariableDie);
+ }
+
+ // Add nested scopes.
+ SmallVector<DbgScope *, 8> &Scopes = ParentScope->getScopes();
+ for (unsigned j = 0, M = Scopes.size(); j < M; ++j) {
+ // Define the Scope debug information entry.
+ DbgScope *Scope = Scopes[j];
+ // FIXME - Ignore inlined functions for the time being.
+ if (!Scope->getParent()) continue;
+
+ unsigned StartID = MappedLabel(Scope->getStartLabelID());
+ unsigned EndID = MappedLabel(Scope->getEndLabelID());
+
+ // Ignore empty scopes.
+ if (StartID == EndID && StartID != 0) continue;
+ if (Scope->getScopes().empty() && Scope->getVariables().empty()) continue;
+
+ if (StartID == ParentStartID && EndID == ParentEndID) {
+ // Just add stuff to the parent scope.
+ ConstructDbgScope(Scope, ParentStartID, ParentEndID, ParentDie, Unit);
+ } else {
+ DIE *ScopeDie = new DIE(DW_TAG_lexical_block);
+
+ // Add the scope bounds.
+ if (StartID) {
+ AddLabel(ScopeDie, DW_AT_low_pc, DW_FORM_addr,
+ DWLabel("label", StartID));
+ } else {
+ AddLabel(ScopeDie, DW_AT_low_pc, DW_FORM_addr,
+ DWLabel("func_begin", SubprogramCount));
+ }
+ if (EndID) {
+ AddLabel(ScopeDie, DW_AT_high_pc, DW_FORM_addr,
+ DWLabel("label", EndID));
+ } else {
+ AddLabel(ScopeDie, DW_AT_high_pc, DW_FORM_addr,
+ DWLabel("func_end", SubprogramCount));
+ }
+
+ // Add the scope contents.
+ ConstructDbgScope(Scope, StartID, EndID, ScopeDie, Unit);
+ ParentDie->AddChild(ScopeDie);
+ }
+ }
+ }
+
+ /// ConstructRootDbgScope - Construct the scope for the subprogram.
+ ///
+ void ConstructRootDbgScope(DbgScope *RootScope) {
+ // Exit if there is no root scope.
+ if (!RootScope) return;
+
+ // Get the subprogram debug information entry.
+ DISubprogram *SPD = cast<DISubprogram>(RootScope->getDesc());
+
+ // Get the compile unit context.
+ CompileUnit *Unit = FindCompileUnit(SPD->getCompileUnit());
+
+ // Get the subprogram die.
+ DIE *SPDie = Unit->getDieMapSlotFor(SPD->getGV());
+ assert(SPDie && "Missing subprogram descriptor");
+
+ // Add the function bounds.
+ AddLabel(SPDie, DW_AT_low_pc, DW_FORM_addr,
+ DWLabel("func_begin", SubprogramCount));
+ AddLabel(SPDie, DW_AT_high_pc, DW_FORM_addr,
+ DWLabel("func_end", SubprogramCount));
+ MachineLocation Location(RI->getFrameRegister(*MF));
+ AddAddress(SPDie, DW_AT_frame_base, Location);
+
+ ConstructDbgScope(RootScope, 0, 0, SPDie, Unit);
+ }
+
+ /// ConstructDefaultDbgScope - Construct a default scope for the subprogram.
+ ///
+ void ConstructDefaultDbgScope(MachineFunction *MF) {
+ // Find the correct subprogram descriptor.
+ std::string SPName = "llvm.dbg.subprograms";
+ std::vector<GlobalVariable*> Result;
+ getGlobalVariablesUsing(*M, SPName, Result);
+ for (std::vector<GlobalVariable *>::iterator I = Result.begin(),
+ E = Result.end(); I != E; ++I) {
+
+ DISubprogram *SPD = new DISubprogram(*I);
+
+ if (SPD->getName() == MF->getFunction()->getName()) {
+ // Get the compile unit context.
+ CompileUnit *Unit = FindCompileUnit(SPD->getCompileUnit());
+
+ // Get the subprogram die.
+ DIE *SPDie = Unit->getDieMapSlotFor(SPD->getGV());
+ assert(SPDie && "Missing subprogram descriptor");
+
+ // Add the function bounds.
+ AddLabel(SPDie, DW_AT_low_pc, DW_FORM_addr,
+ DWLabel("func_begin", SubprogramCount));
+ AddLabel(SPDie, DW_AT_high_pc, DW_FORM_addr,
+ DWLabel("func_end", SubprogramCount));
+
+ MachineLocation Location(RI->getFrameRegister(*MF));
+ AddAddress(SPDie, DW_AT_frame_base, Location);
+ return;
+ }
+ }
+#if 0
+ // FIXME: This is causing an abort because C++ mangled names are compared
+ // with their unmangled counterparts. See PR2885. Don't do this assert.
+ assert(0 && "Couldn't find DIE for machine function!");
+#endif
+ }
+
/// ConstructScope - Construct the components of a scope.
///
void ConstructScope(DebugScope *ParentScope,
ConstructScope(RootScope, 0, 0, SPDie, Unit);
}
+ /// ConstructDefaultScope - Construct a default scope for the subprogram.
+ ///
+ void ConstructDefaultScope(MachineFunction *MF) {
+ // Find the correct subprogram descriptor.
+ std::vector<SubprogramDesc *> Subprograms;
+ MMI->getAnchoredDescriptors<SubprogramDesc>(*M, Subprograms);
+
+ for (unsigned i = 0, N = Subprograms.size(); i < N; ++i) {
+ SubprogramDesc *SPD = Subprograms[i];
+
+ if (SPD->getName() == MF->getFunction()->getName()) {
+ // Get the compile unit context.
+ CompileUnit *Unit = GetBaseCompileUnit();
+
+ // Get the subprogram die.
+ DIE *SPDie = Unit->getDieMapSlotFor(SPD);
+ assert(SPDie && "Missing subprogram descriptor");
+
+ // Add the function bounds.
+ AddLabel(SPDie, DW_AT_low_pc, DW_FORM_addr,
+ DWLabel("func_begin", SubprogramCount));
+ AddLabel(SPDie, DW_AT_high_pc, DW_FORM_addr,
+ DWLabel("func_end", SubprogramCount));
+
+ MachineLocation Location(RI->getFrameRegister(*MF));
+ AddAddress(SPDie, DW_AT_frame_base, Location);
+ return;
+ }
+ }
+#if 0
+ // FIXME: This is causing an abort because C++ mangled names are compared
+ // with their unmangled counterparts. See PR2885. Don't do this assert.
+ assert(0 && "Couldn't find DIE for machine function!");
+#endif
+ }
+
/// EmitInitial - Emit initial Dwarf declarations. This is necessary for cc
/// tools to recognize the object file contains Dwarf information.
void EmitInitial() {
Asm->SwitchToDataSection(TAI->getDwarfRangesSection());
EmitLabel("section_ranges", 0);
- Asm->SwitchToTextSection(TAI->getTextSection());
+ Asm->SwitchToSection(TAI->getTextSection());
EmitLabel("text_begin", 0);
- Asm->SwitchToDataSection(TAI->getDataSection());
+ Asm->SwitchToSection(TAI->getDataSection());
EmitLabel("data_begin", 0);
}
// Isolate current sections line info.
const std::vector<SourceLineInfo> &LineInfos = SectionSourceLines[j];
- if (VerboseAsm)
- Asm->EOL(std::string("Section ") + SectionMap[j + 1]);
- else
+ if (VerboseAsm) {
+ const Section* S = SectionMap[j + 1];
+ Asm->EOL(std::string("Section ") + S->getName());
+ } else
Asm->EOL();
// Dwarf assumes we start with first line of first source file.
Asm->SwitchToDataSection(TAI->getDwarfARangesSection());
// FIXME - Mock up
- #if 0
+#if 0
CompileUnit *Unit = GetBaseCompileUnit();
// Don't include size of length
Asm->EmitInt32(0); Asm->EOL("EOM (1)");
Asm->EmitInt32(0); Asm->EOL("EOM (2)");
- #endif
+#endif
Asm->EOL();
}
Asm->EOL();
}
+ /// ConstructCompileUnits - Create a compile unit DIEs.
+ void ConstructCompileUnits() {
+ std::string CUName = "llvm.dbg.compile_units";
+ std::vector<GlobalVariable*> Result;
+ getGlobalVariablesUsing(*M, CUName, Result);
+ for (std::vector<GlobalVariable *>::iterator RI = Result.begin(),
+ RE = Result.end(); RI != RE; ++RI) {
+ DICompileUnit *DIUnit = new DICompileUnit(*RI);
+ unsigned ID = RecordSource(DIUnit->getDirectory(),
+ DIUnit->getFilename());
+
+ DIE *Die = new DIE(DW_TAG_compile_unit);
+ AddSectionOffset(Die, DW_AT_stmt_list, DW_FORM_data4,
+ DWLabel("section_line", 0), DWLabel("section_line", 0),
+ false);
+ AddString(Die, DW_AT_producer, DW_FORM_string, DIUnit->getProducer());
+ AddUInt(Die, DW_AT_language, DW_FORM_data1, DIUnit->getLanguage());
+ AddString(Die, DW_AT_name, DW_FORM_string, DIUnit->getFilename());
+ if (!DIUnit->getDirectory().empty())
+ AddString(Die, DW_AT_comp_dir, DW_FORM_string, DIUnit->getDirectory());
+
+ CompileUnit *Unit = new CompileUnit(ID, Die);
+ DW_CUs[DIUnit->getGV()] = Unit;
+ }
+ }
+
/// ConstructCompileUnitDIEs - Create a compile unit DIE for each source and
/// header file.
void ConstructCompileUnitDIEs() {
}
}
+ /// ConstructGlobalVariableDIEs - Create DIEs for each of the externally
+ /// visible global variables.
+ void ConstructGlobalVariableDIEs() {
+ std::string GVName = "llvm.dbg.global_variables";
+ std::vector<GlobalVariable*> Result;
+ getGlobalVariablesUsing(*M, GVName, Result);
+ for (std::vector<GlobalVariable *>::iterator GVI = Result.begin(),
+ GVE = Result.end(); GVI != GVE; ++GVI) {
+ DIGlobalVariable *DI_GV = new DIGlobalVariable(*GVI);
+ CompileUnit *DW_Unit = FindCompileUnit(DI_GV->getCompileUnit());
+
+ // Check for pre-existence.
+ DIE *&Slot = DW_Unit->getDieMapSlotFor(DI_GV->getGV());
+ if (Slot) continue;
+
+ DIE *VariableDie = new DIE(DW_TAG_variable);
+ AddString(VariableDie, DW_AT_name, DW_FORM_string, DI_GV->getName());
+ const std::string &LinkageName = DI_GV->getLinkageName();
+ if (!LinkageName.empty())
+ AddString(VariableDie, DW_AT_MIPS_linkage_name, DW_FORM_string,
+ LinkageName);
+ AddType(DW_Unit, VariableDie, DI_GV->getType());
+
+ if (!DI_GV->isLocalToUnit())
+ AddUInt(VariableDie, DW_AT_external, DW_FORM_flag, 1);
+
+ // Add source line info, if available.
+ AddSourceLine(VariableDie, DI_GV);
+
+ // Add address.
+ DIEBlock *Block = new DIEBlock();
+ AddUInt(Block, 0, DW_FORM_data1, DW_OP_addr);
+ AddObjectLabel(Block, 0, DW_FORM_udata,
+ Asm->getGlobalLinkName(DI_GV->getGV()));
+ AddBlock(VariableDie, DW_AT_location, 0, Block);
+
+ //Add to map.
+ Slot = VariableDie;
+
+ //Add to context owner.
+ DW_Unit->getDie()->AddChild(VariableDie);
+
+ //Expose as global. FIXME - need to check external flag.
+ DW_Unit->AddGlobal(DI_GV->getName(), VariableDie);
+ }
+ }
+
/// ConstructGlobalDIEs - Create DIEs for each of the externally visible
/// global variables.
void ConstructGlobalDIEs() {
}
}
+ /// ConstructSubprograms - Create DIEs for each of the externally visible
+ /// subprograms.
+ void ConstructSubprograms() {
+
+ std::string SPName = "llvm.dbg.subprograms";
+ std::vector<GlobalVariable*> Result;
+ getGlobalVariablesUsing(*M, SPName, Result);
+ for (std::vector<GlobalVariable *>::iterator RI = Result.begin(),
+ RE = Result.end(); RI != RE; ++RI) {
+
+ DISubprogram *SP = new DISubprogram(*RI);
+ CompileUnit *Unit = FindCompileUnit(SP->getCompileUnit());
+
+ // Check for pre-existence.
+ DIE *&Slot = Unit->getDieMapSlotFor(SP->getGV());
+ if (Slot) continue;
+
+ DIE *SubprogramDie = new DIE(DW_TAG_subprogram);
+ AddString(SubprogramDie, DW_AT_name, DW_FORM_string, SP->getName());
+ const std::string &LinkageName = SP->getLinkageName();
+ if (!LinkageName.empty())
+ AddString(SubprogramDie, DW_AT_MIPS_linkage_name, DW_FORM_string,
+ LinkageName);
+ DIType SPTy = SP->getType();
+ AddType(Unit, SubprogramDie, SPTy);
+ if (!SP->isLocalToUnit())
+ AddUInt(SubprogramDie, DW_AT_external, DW_FORM_flag, 1);
+ AddUInt(SubprogramDie, DW_AT_prototyped, DW_FORM_flag, 1);
+
+ AddSourceLine(SubprogramDie, SP);
+ //Add to map.
+ Slot = SubprogramDie;
+ //Add to context owner.
+ Unit->getDie()->AddChild(SubprogramDie);
+ //Expose as global.
+ Unit->AddGlobal(SP->getName(), SubprogramDie);
+ }
+ }
+
/// ConstructSubprogramDIEs - Create DIEs for each of the externally visible
/// subprograms.
void ConstructSubprogramDIEs() {
, SectionSourceLines()
, didInitial(false)
, shouldEmit(false)
+ , RootDbgScope(NULL)
{
}
virtual ~DwarfDebug() {
delete Values[j];
}
+ /// SetDebugInfo - Create global DIEs and emit initial debug info sections.
+ /// This is inovked by the target AsmPrinter.
+ void SetDebugInfo() {
+ // FIXME - Check if the module has debug info or not.
+ // Create all the compile unit DIEs.
+ ConstructCompileUnits();
+
+ // Create DIEs for each of the externally visible global variables.
+ ConstructGlobalVariableDIEs();
+
+ // Create DIEs for each of the externally visible subprograms.
+ ConstructSubprograms();
+
+ // Prime section data.
+ SectionMap.insert(TAI->getTextSection());
+
+ // Print out .file directives to specify files for .loc directives. These
+ // are printed out early so that they precede any .loc directives.
+ if (TAI->hasDotLocAndDotFile()) {
+ for (unsigned i = 1, e = SrcFiles.size(); i <= e; ++i) {
+ sys::Path FullPath(Directories[SrcFiles[i].getDirectoryID()]);
+ bool AppendOk = FullPath.appendComponent(SrcFiles[i].getName());
+ assert(AppendOk && "Could not append filename to directory!");
+ AppendOk = false;
+ Asm->EmitFile(i, FullPath.toString());
+ Asm->EOL();
+ }
+ }
+
+ // Emit initial sections
+ EmitInitial();
+ }
+
/// SetModuleInfo - Set machine module information when it's known that pass
/// manager has created it. Set by the target AsmPrinter.
void SetModuleInfo(MachineModuleInfo *mmi) {
sys::Path FullPath(Directories[SourceFiles[i].getDirectoryID()]);
bool AppendOk = FullPath.appendComponent(SourceFiles[i].getName());
assert(AppendOk && "Could not append filename to directory!");
+ AppendOk = false;
Asm->EmitFile(i, FullPath.toString());
Asm->EOL();
}
if (!ShouldEmitDwarf()) return;
// Standard sections final addresses.
- Asm->SwitchToTextSection(TAI->getTextSection());
+ Asm->SwitchToSection(TAI->getTextSection());
EmitLabel("text_end", 0);
- Asm->SwitchToDataSection(TAI->getDataSection());
+ Asm->SwitchToSection(TAI->getDataSection());
EmitLabel("data_end", 0);
// End text sections.
for (unsigned i = 1, N = SectionMap.size(); i <= N; ++i) {
- Asm->SwitchToTextSection(SectionMap[i].c_str());
+ Asm->SwitchToSection(SectionMap[i]);
EmitLabel("section_end", i);
}
/// EndFunction - Gather and emit post-function debug information.
///
- void EndFunction() {
+ void EndFunction(MachineFunction *MF) {
if (!ShouldEmitDwarf()) return;
// Define end label for subprogram.
if (!LineInfos.empty()) {
// Get section line info.
- unsigned ID = SectionMap.insert(Asm->CurrentSection);
+ unsigned ID = SectionMap.insert(Asm->CurrentSection_);
if (SectionSourceLines.size() < ID) SectionSourceLines.resize(ID);
std::vector<SourceLineInfo> &SectionLineInfos = SectionSourceLines[ID-1];
// Append the function info to section info.
}
// Construct scopes for subprogram.
- ConstructRootScope(MMI->getRootScope());
+ if (MMI->getRootScope())
+ ConstructRootScope(MMI->getRootScope());
+ else
+ // FIXME: This is wrong. We are essentially getting past a problem with
+ // debug information not being able to handle unreachable blocks that have
+ // debug information in them. In particular, those unreachable blocks that
+ // have "region end" info in them. That situation results in the "root
+ // scope" not being created. If that's the case, then emit a "default"
+ // scope, i.e., one that encompasses the whole function. This isn't
+ // desirable. And a better way of handling this (and all of the debugging
+ // information) needs to be explored.
+ ConstructDefaultScope(MF);
DebugFrames.push_back(FunctionDebugFrameInfo(SubprogramCount,
MMI->getFrameMoves()));
// Begin eh frame section.
Asm->SwitchToTextSection(TAI->getDwarfEHFrameSection());
+
+ if (!TAI->doesRequireNonLocalEHFrameLabel())
+ O << TAI->getEHGlobalPrefix();
O << "EH_frame" << Index << ":\n";
EmitLabel("section_eh_frame", Index);
Asm->EmitInt8(DW_EH_PE_pcrel | DW_EH_PE_sdata4);
Asm->EOL("LSDA Encoding (pcrel sdata4)");
+
Asm->EmitInt8(DW_EH_PE_pcrel | DW_EH_PE_sdata4);
Asm->EOL("FDE Encoding (pcrel sdata4)");
} else {
Asm->EmitULEB128Bytes(1);
Asm->EOL("Augmentation Size");
+
Asm->EmitInt8(DW_EH_PE_pcrel | DW_EH_PE_sdata4);
Asm->EOL("FDE Encoding (pcrel sdata4)");
}
EmitLabel("eh_frame_begin", EHFrameInfo.Number);
- EmitSectionOffset("eh_frame_begin", "eh_frame_common",
- EHFrameInfo.Number, EHFrameInfo.PersonalityIndex,
- true, true, false);
+ if (TAI->doesRequireNonLocalEHFrameLabel()) {
+ PrintRelDirective(true, true);
+ PrintLabelName("eh_frame_begin", EHFrameInfo.Number);
+
+ if (!TAI->isAbsoluteEHSectionOffsets())
+ O << "-EH_frame" << EHFrameInfo.PersonalityIndex;
+ } else {
+ EmitSectionOffset("eh_frame_begin", "eh_frame_common",
+ EHFrameInfo.Number, EHFrameInfo.PersonalityIndex,
+ true, true, false);
+ }
+
Asm->EOL("FDE CIE offset");
EmitReference("eh_func_begin", EHFrameInfo.Number, true, true);
// Begin the exception table.
Asm->SwitchToDataSection(TAI->getDwarfExceptionSection());
- O << "GCC_except_table" << SubprogramCount << ":\n";
Asm->EmitAlignment(2, 0, 0, false);
+ O << "GCC_except_table" << SubprogramCount << ":\n";
for (unsigned i = 0; i != SizeAlign; ++i) {
Asm->EmitInt8(0);
Asm->EOL("Padding");
/// DwarfWriter Implementation
///
-DwarfWriter::DwarfWriter(raw_ostream &OS, AsmPrinter *A,
- const TargetAsmInfo *T) {
- DE = new DwarfException(OS, A, T);
- DD = new DwarfDebug(OS, A, T);
+DwarfWriter::DwarfWriter() : ImmutablePass(&ID), DD(NULL), DE(NULL) {
}
DwarfWriter::~DwarfWriter() {
delete DD;
}
-/// SetModuleInfo - Set machine module info when it's known that pass manager
-/// has created it. Set by the target AsmPrinter.
-void DwarfWriter::SetModuleInfo(MachineModuleInfo *MMI) {
- DD->SetModuleInfo(MMI);
- DE->SetModuleInfo(MMI);
-}
-
/// BeginModule - Emit all Dwarf sections that should come prior to the
/// content.
-void DwarfWriter::BeginModule(Module *M) {
+void DwarfWriter::BeginModule(Module *M,
+ MachineModuleInfo *MMI,
+ raw_ostream &OS, AsmPrinter *A,
+ const TargetAsmInfo *T) {
+ DE = new DwarfException(OS, A, T);
+ DD = new DwarfDebug(OS, A, T);
DE->BeginModule(M);
DD->BeginModule(M);
+ DD->SetModuleInfo(MMI);
+ DE->SetModuleInfo(MMI);
}
/// EndModule - Emit all Dwarf sections that should come after the content.
/// EndFunction - Gather and emit post-function debug information.
///
-void DwarfWriter::EndFunction() {
- DD->EndFunction();
+void DwarfWriter::EndFunction(MachineFunction *MF) {
+ DD->EndFunction(MF);
DE->EndFunction();
if (MachineModuleInfo *MMI = DD->getMMI() ? DD->getMMI() : DE->getMMI())
projects / oota-llvm.git / blobdiff