#include "llvm/ADT/StringExtras.h"
#include "llvm/ADT/UniqueVector.h"
#include "llvm/Module.h"
-#include "llvm/Type.h"
+#include "llvm/DerivedTypes.h"
+#include "llvm/Constants.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);
+}
+
+/// getGlobalVariable - Return either a direct or cast Global value.
+///
+static GlobalVariable *getGlobalVariable(Value *V) {
+ if (GlobalVariable *GV = dyn_cast<GlobalVariable>(V)) {
+ return GV;
+ } else if (ConstantExpr *CE = dyn_cast<ConstantExpr>(V)) {
+ if (CE->getOpcode() == Instruction::BitCast) {
+ return dyn_cast<GlobalVariable>(CE->getOperand(0));
+ } else if (CE->getOpcode() == Instruction::GetElementPtr) {
+ for (unsigned int i=1; i<CE->getNumOperands(); i++) {
+ if (!CE->getOperand(i)->isNullValue())
+ return NULL;
+ }
+ return dyn_cast<GlobalVariable>(CE->getOperand(0));
+ }
+ }
+ return NULL;
+}
+
//===----------------------------------------------------------------------===//
/// DWLabel - Labels are used to track locations in the assembler file.
/// Labels appear in the form @verbatim <prefix><Tag><Number> @endverbatim,
/// with a source file.
class CompileUnit {
private:
- /// Desc - Compile unit debug descriptor.
- ///
- CompileUnitDesc *Desc;
-
/// ID - File identifier for source.
///
unsigned ID;
///
DIE *Die;
- /// DescToDieMap - Tracks the mapping of unit level debug informaton
- /// descriptors to debug information entries.
- std::map<DebugInfoDesc *, DIE *> DescToDieMap;
+ /// GVToDieMap - Tracks the mapping of unit level debug informaton
+ /// variables to debug information entries.
+ std::map<GlobalVariable *, DIE *> GVToDieMap;
- /// DescToDIEntryMap - Tracks the mapping of unit level debug informaton
+ /// GVToDIEntryMap - Tracks the mapping of unit level debug informaton
/// descriptors to debug information entries using a DIEntry proxy.
- std::map<DebugInfoDesc *, DIEntry *> DescToDIEntryMap;
+ std::map<GlobalVariable *, DIEntry *> GVToDIEntryMap;
/// Globals - A map of globally visible named entities for this unit.
///
///
FoldingSet<DIE> DiesSet;
- /// Dies - List of all dies in the compile unit.
- ///
- std::vector<DIE *> Dies;
-
public:
- CompileUnit(CompileUnitDesc *CUD, unsigned I, DIE *D)
- : Desc(CUD)
- , ID(I)
- , Die(D)
- , DescToDieMap()
- , DescToDIEntryMap()
- , Globals()
- , DiesSet(InitDiesSetSize)
- , Dies()
+ CompileUnit(unsigned I, DIE *D)
+ : ID(I), Die(D), GVToDieMap(),
+ GVToDIEntryMap(), Globals(), DiesSet(InitDiesSetSize)
{}
~CompileUnit() {
delete Die;
-
- for (unsigned i = 0, N = Dies.size(); i < N; ++i)
- delete Dies[i];
}
// Accessors.
- CompileUnitDesc *getDesc() const { return Desc; }
unsigned getID() const { return ID; }
DIE* getDie() const { return Die; }
std::map<std::string, DIE *> &getGlobals() { return Globals; }
}
/// getDieMapSlotFor - Returns the debug information entry map slot for the
- /// specified debug descriptor.
- DIE *&getDieMapSlotFor(DebugInfoDesc *DID) {
- return DescToDieMap[DID];
+ /// specified debug variable.
+ 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];
+ /// specified debug variable.
+ DIEntry *&getDIEntrySlotFor(GlobalVariable *GV) {
+ return GVToDIEntryMap[GV];
}
/// AddDie - Adds or interns the DIE to the compile unit.
};
+//===----------------------------------------------------------------------===//
+/// SrcLineInfo - 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 SrcFileInfo &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 *, 4> Scopes; // Scopes defined in scope.
+ SmallVector<DbgVariable *, 8> Variables;// Variables declared in scope.
+
+public:
+ DbgScope(DbgScope *P, DIDescriptor D)
+ : Parent(P), Desc(D), StartLabelID(0), EndLabelID(0), Scopes(), Variables()
+ {}
+ ~DbgScope() {
+ for (unsigned i = 0, N = Scopes.size(); i < N; ++i) delete Scopes[i];
+ for (unsigned j = 0, M = Variables.size(); j < M; ++j) delete Variables[j];
+ }
+
+ // Accessors.
+ DbgScope *getParent() const { return Parent; }
+ DIDescriptor getDesc() const { return Desc; }
+ unsigned getStartLabelID() const { return StartLabelID; }
+ unsigned getEndLabelID() const { return EndLabelID; }
+ SmallVector<DbgScope *, 4> &getScopes() { return Scopes; }
+ SmallVector<DbgVariable *, 8> &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.
///
// Attributes used to construct specific Dwarf sections.
//
- /// CompileUnits - All the compile units involved in this build. The index
+ /// DW_CUs - 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.
///
///
std::vector<DIEAbbrev *> Abbreviations;
+ /// 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;
+
/// ValuesSet - Used to uniquely define values.
///
FoldingSet<DIEValue> ValuesSet;
///
UniqueVector<std::string> StringPool;
- /// UnitMap - Map debug information descriptor to compile unit.
- ///
- std::map<DebugInfoDesc *, CompileUnit *> DescToUnitMap;
-
/// SectionMap - Provides a unique id per text section.
///
UniqueVector<const Section*> SectionMap;
/// SectionSourceLines - Tracks line numbers per text section.
///
- std::vector<std::vector<SourceLineInfo> > SectionSourceLines;
+ std::vector<std::vector<SrcLineInfo> > SectionSourceLines;
/// didInitial - Flag to indicate if initial emission has been done.
///
///
bool shouldEmit;
+ // RootDbgScope - Top level scope for the current function.
+ //
+ DbgScope *RootDbgScope;
+
+ // DbgScopeMap - Tracks the scopes in the current function.
+ DenseMap<GlobalVariable *, DbgScope *> DbgScopeMap;
+
struct FunctionDebugFrameInfo {
unsigned Number;
std::vector<MachineMove> Moves;
/// AddSourceLine - Add location information to specified debug information
/// entry.
- void AddSourceLine(DIE *Die, CompileUnitDesc *File, unsigned Line) {
- if (File && Line) {
- CompileUnit *FileUnit = FindCompileUnit(File);
- unsigned FileID = FileUnit->getID();
- AddUInt(Die, DW_AT_decl_file, 0, FileID);
- AddUInt(Die, DW_AT_decl_line, 0, Line);
+ void AddSourceLine(DIE *Die, const DIVariable *V) {
+ unsigned FileID = 0;
+ unsigned Line = V->getLineNumber();
+ if (V->getVersion() <= LLVMDebugVersion6) {
+ // 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, const DIGlobal *G) {
+ unsigned FileID = 0;
+ unsigned Line = G->getLineNumber();
+ if (G->getVersion() < LLVMDebugVersion6) {
+ // 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, const DIType *Ty) {
+ unsigned FileID = 0;
+ unsigned Line = Ty->getLineNumber();
+ if (Ty->getVersion() <= LLVMDebugVersion6) {
+ // Version6 or earlier. Use compile unit info to get file id.
+ CompileUnit *Unit = FindCompileUnit(Ty->getCompileUnit());
+ FileID = Unit->getID();
+ } else {
+ // Version7 or newer, use filename and directory info from DIType
+ // directly.
+ unsigned DID = Directories.idFor(Ty->getDirectory());
+ FileID = SrcFiles.idFor(SrcFileInfo(DID, Ty->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
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.
- ///
- void AddType(DIE *Entity, TypeDesc *TyDesc, CompileUnit *Unit) {
- if (!TyDesc) {
- AddBasicType(Entity, Unit, "", DW_ATE_signed, sizeof(int32_t));
- } else {
- // Check for pre-existence.
- DIEntry *&Slot = Unit->getDIEntrySlotFor(TyDesc);
-
- // If it exists then use the existing value.
- if (Slot) {
- Entity->AddValue(DW_AT_type, DW_FORM_ref4, Slot);
- return;
- }
+ void AddType(CompileUnit *DW_Unit, DIE *Entity, DIType Ty) {
+ if (Ty.isNull()) {
+ AddBasicType(Entity, DW_Unit, "", DW_ATE_signed, sizeof(int32_t));
+ return;
+ }
- if (SubprogramDesc *SubprogramTy = dyn_cast<SubprogramDesc>(TyDesc)) {
- // FIXME - Not sure why programs and variables are coming through here.
- // Short cut for handling subprogram types (not really a TyDesc.)
- AddPointerType(Entity, Unit, SubprogramTy->getName());
- } else if (GlobalVariableDesc *GlobalTy =
- dyn_cast<GlobalVariableDesc>(TyDesc)) {
- // FIXME - Not sure why programs and variables are coming through here.
- // Short cut for handling global variable types (not really a TyDesc.)
- AddPointerType(Entity, Unit, GlobalTy->getName());
- } else {
- // Set up proxy.
- Slot = NewDIEntry();
+ // 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;
+ }
- // Construct type.
- DIE Buffer(DW_TAG_base_type);
- ConstructType(Buffer, TyDesc, Unit);
+ // Set up proxy.
+ Slot = NewDIEntry();
- // Add debug information entry to entity and unit.
- DIE *Die = Unit->AddDie(Buffer);
- SetDIEntry(Slot, Die);
- Entity->AddValue(DW_AT_type, DW_FORM_ref4, Slot);
- }
+ // Construct type.
+ DIE Buffer(DW_TAG_base_type);
+ if (Ty.isBasicType(Ty.getTag()))
+ ConstructTypeDIE(DW_Unit, Buffer, DIBasicType(Ty.getGV()));
+ else if (Ty.isDerivedType(Ty.getTag()))
+ ConstructTypeDIE(DW_Unit, Buffer, DIDerivedType(Ty.getGV()));
+ else {
+ assert (Ty.isCompositeType(Ty.getTag()) && "Unknown kind of DIType");
+ ConstructTypeDIE(DW_Unit, Buffer, DICompositeType(Ty.getGV()));
}
+
+ // 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);
}
- /// ConstructType - Adds all the required attributes to the type.
- ///
- void ConstructType(DIE &Buffer, TypeDesc *TyDesc, CompileUnit *Unit) {
+ /// ConstructTypeDIE - Construct basic type die from DIBasicType.
+ void ConstructTypeDIE(CompileUnit *DW_Unit, DIE &Buffer,
+ DIBasicType BTy) {
+
// Get core information.
- const std::string &Name = TyDesc->getName();
- uint64_t Size = TyDesc->getSize() >> 3;
-
- if (BasicTypeDesc *BasicTy = dyn_cast<BasicTypeDesc>(TyDesc)) {
- // Fundamental types like int, float, bool
- Buffer.setTag(DW_TAG_base_type);
- AddUInt(&Buffer, DW_AT_encoding, DW_FORM_data1, BasicTy->getEncoding());
- } else if (DerivedTypeDesc *DerivedTy = dyn_cast<DerivedTypeDesc>(TyDesc)) {
- // Fetch tag.
- unsigned Tag = DerivedTy->getTag();
- // FIXME - Workaround for templates.
- if (Tag == DW_TAG_inheritance) Tag = DW_TAG_reference_type;
- // Pointers, typedefs et al.
- Buffer.setTag(Tag);
- // Map to main type, void will not have a type.
- if (TypeDesc *FromTy = DerivedTy->getFromType())
- AddType(&Buffer, FromTy, Unit);
- } else if (CompositeTypeDesc *CompTy = dyn_cast<CompositeTypeDesc>(TyDesc)){
- // Fetch tag.
- unsigned Tag = CompTy->getTag();
-
- // Set tag accordingly.
- if (Tag == DW_TAG_vector_type)
- Buffer.setTag(DW_TAG_array_type);
- else
- Buffer.setTag(Tag);
-
- std::vector<DebugInfoDesc *> &Elements = CompTy->getElements();
-
- switch (Tag) {
- case DW_TAG_vector_type:
- AddUInt(&Buffer, DW_AT_GNU_vector, DW_FORM_flag, 1);
- // Fall thru
- case DW_TAG_array_type: {
- // Add element type.
- if (TypeDesc *FromTy = CompTy->getFromType())
- AddType(&Buffer, FromTy, Unit);
-
- // Don't emit size attribute.
- Size = 0;
-
- // Construct an anonymous type for index type.
- DIE *IndexTy = ConstructBasicType(Unit, "", DW_ATE_signed,
- sizeof(int32_t));
-
- // Add subranges to array type.
- 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();
- DIE *Subrange = new DIE(DW_TAG_subrange_type);
-
- // If a range is available.
- if (Lo != Hi) {
- AddDIEntry(Subrange, DW_AT_type, DW_FORM_ref4, IndexTy);
- // Only add low if non-zero.
- if (Lo) AddSInt(Subrange, DW_AT_lower_bound, 0, Lo);
- AddSInt(Subrange, DW_AT_upper_bound, 0, Hi);
- }
-
- Buffer.AddChild(Subrange);
- }
- break;
- }
- 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) {
- DebugInfoDesc *Element = Elements[i];
-
- if (DerivedTypeDesc *MemberDesc = dyn_cast<DerivedTypeDesc>(Element)){
- // Add field or base class.
- unsigned Tag = MemberDesc->getTag();
-
- // Extract the basic information.
- const std::string &Name = MemberDesc->getName();
- uint64_t Size = MemberDesc->getSize();
- uint64_t Align = MemberDesc->getAlign();
- uint64_t Offset = MemberDesc->getOffset();
-
- // Construct member debug information entry.
- DIE *Member = new DIE(Tag);
-
- // 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());
-
- // Most of the time the field info is the same as the members.
- uint64_t FieldSize = Size;
- uint64_t FieldAlign = Align;
- uint64_t FieldOffset = Offset;
-
- // Set the member type.
- TypeDesc *FromTy = MemberDesc->getFromType();
- AddType(Member, FromTy, Unit);
-
- // Walk up typedefs until a real size is found.
- while (FromTy) {
- if (FromTy->getTag() != DW_TAG_typedef) {
- FieldSize = FromTy->getSize();
- FieldAlign = FromTy->getAlign();
- break;
- }
-
- FromTy = cast<DerivedTypeDesc>(FromTy)->getFromType();
- }
-
- // Unless we have a bit field.
- if (Tag == DW_TAG_member && FieldSize != Size) {
- // Construct the alignment mask.
- uint64_t AlignMask = ~(FieldAlign - 1);
- // Determine the high bit + 1 of the declared size.
- uint64_t HiMark = (Offset + FieldSize) & AlignMask;
- // Work backwards to determine the base offset of the field.
- FieldOffset = HiMark - FieldSize;
- // Now normalize offset to the field.
- Offset -= FieldOffset;
-
- // Maybe we need to work from the other end.
- if (TD->isLittleEndian()) Offset = FieldSize - (Offset + Size);
-
- // Add size and offset.
- AddUInt(Member, DW_AT_byte_size, 0, FieldSize >> 3);
- AddUInt(Member, DW_AT_bit_size, 0, Size);
- AddUInt(Member, DW_AT_bit_offset, 0, Offset);
- }
-
- // Add computation for offset.
- DIEBlock *Block = new DIEBlock();
- AddUInt(Block, 0, DW_FORM_data1, DW_OP_plus_uconst);
- AddUInt(Block, 0, DW_FORM_udata, FieldOffset >> 3);
- AddBlock(Member, DW_AT_data_member_location, 0, Block);
-
- // Add accessibility (public default unless is base class.
- if (MemberDesc->isProtected()) {
- AddUInt(Member, DW_AT_accessibility, 0, DW_ACCESS_protected);
- } else if (MemberDesc->isPrivate()) {
- AddUInt(Member, DW_AT_accessibility, 0, DW_ACCESS_private);
- } else if (Tag == DW_TAG_inheritance) {
- AddUInt(Member, DW_AT_accessibility, 0, DW_ACCESS_public);
- }
-
- Buffer.AddChild(Member);
- } else if (GlobalVariableDesc *StaticDesc =
- dyn_cast<GlobalVariableDesc>(Element)) {
- // Add static member.
-
- // Construct member debug information entry.
- DIE *Static = new DIE(DW_TAG_variable);
-
- // Add name and mangled name.
- const std::string &Name = StaticDesc->getName();
- const std::string &LinkageName = StaticDesc->getLinkageName();
- AddString(Static, DW_AT_name, DW_FORM_string, Name);
- if (!LinkageName.empty()) {
- AddString(Static, DW_AT_MIPS_linkage_name, DW_FORM_string,
- LinkageName);
- }
-
- // Add location.
- AddSourceLine(Static, StaticDesc->getFile(), StaticDesc->getLine());
-
- // Add type.
- if (TypeDesc *StaticTy = StaticDesc->getType())
- AddType(Static, StaticTy, Unit);
-
- // Add flags.
- if (!StaticDesc->isStatic())
- AddUInt(Static, DW_AT_external, DW_FORM_flag, 1);
- AddUInt(Static, DW_AT_declaration, DW_FORM_flag, 1);
+ 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);
+ }
- Buffer.AddChild(Static);
- } else if (SubprogramDesc *MethodDesc =
- dyn_cast<SubprogramDesc>(Element)) {
- // Add member function.
+ /// ConstructTypeDIE - Construct derived type die from DIDerivedType.
+ void ConstructTypeDIE(CompileUnit *DW_Unit, DIE &Buffer,
+ DIDerivedType DTy) {
- // Construct member debug information entry.
- DIE *Method = new DIE(DW_TAG_subprogram);
+ // 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;
- // Add name and mangled name.
- const std::string &Name = MethodDesc->getName();
- const std::string &LinkageName = MethodDesc->getLinkageName();
+ Buffer.setTag(Tag);
+ // Map to main type, void will not have a type.
+ DIType FromTy = DTy.getTypeDerivedFrom();
+ AddType(DW_Unit, &Buffer, FromTy);
- AddString(Method, DW_AT_name, DW_FORM_string, Name);
- bool IsCTor = TyDesc->getName() == Name;
+ // Add name if not anonymous or intermediate type.
+ if (!Name.empty()) AddString(&Buffer, DW_AT_name, DW_FORM_string, Name);
- if (!LinkageName.empty()) {
- AddString(Method, DW_AT_MIPS_linkage_name, DW_FORM_string,
- LinkageName);
- }
+ // Add size if non-zero (derived types might be zero-sized.)
+ if (Size)
+ AddUInt(&Buffer, DW_AT_byte_size, 0, Size);
- // Add location.
- AddSourceLine(Method, MethodDesc->getFile(), MethodDesc->getLine());
-
- // Add type.
- if (CompositeTypeDesc *MethodTy =
- dyn_cast_or_null<CompositeTypeDesc>(MethodDesc->getType())) {
- // Get argument information.
- std::vector<DebugInfoDesc *> &Args = MethodTy->getElements();
-
- // If not a ctor.
- if (!IsCTor) {
- // Add return type.
- AddType(Method, dyn_cast<TypeDesc>(Args[0]), Unit);
- }
-
- // Add arguments.
- 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);
- Method->AddChild(Arg);
- }
- }
+ // 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);
+ }
- // Add flags.
- if (!MethodDesc->isStatic())
- AddUInt(Method, DW_AT_external, DW_FORM_flag, 1);
- AddUInt(Method, DW_AT_declaration, DW_FORM_flag, 1);
+ /// ConstructTypeDIE - Construct type DIE from DICompositeType.
+ void ConstructTypeDIE(CompileUnit *DW_Unit, DIE &Buffer,
+ DICompositeType CTy) {
- Buffer.AddChild(Method);
- }
- }
- break;
- }
- case DW_TAG_enumeration_type: {
+ // 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;
+ case DW_TAG_enumeration_type:
+ {
+ DIArray Elements = CTy.getTypeArray();
// Add enumerators to enumeration type.
- 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();
- DIE *Enumerator = new DIE(DW_TAG_enumerator);
- AddString(Enumerator, DW_AT_name, DW_FORM_string, Name);
- AddSInt(Enumerator, DW_AT_const_value, DW_FORM_sdata, Value);
- Buffer.AddChild(Enumerator);
+ for (unsigned i = 0, N = Elements.getNumElements(); i < N; ++i) {
+ DIE *ElemDie = NULL;
+ DIEnumerator Enum(Elements.getElement(i).getGV());
+ ElemDie = ConstructEnumTypeDIE(DW_Unit, &Enum);
+ Buffer.AddChild(ElemDie);
}
-
- break;
}
- case DW_TAG_subroutine_type: {
+ 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.
- AddType(&Buffer, dyn_cast<TypeDesc>(Elements[0]), Unit);
+ DIDescriptor RTy = Elements.getElement(0);
+ AddType(DW_Unit, &Buffer, DIType(RTy.getGV()));
// Add arguments.
- for (unsigned i = 1, N = Elements.size(); i < N; ++i) {
+ for (unsigned i = 1, N = Elements.getNumElements(); i < N; ++i) {
DIE *Arg = new DIE(DW_TAG_formal_parameter);
- AddType(Arg, cast<TypeDesc>(Elements[i]), Unit);
+ DIDescriptor Ty = Elements.getElement(i);
+ AddType(DW_Unit, Arg, DIType(Ty.getGV()));
Buffer.AddChild(Arg);
}
-
- break;
}
- default: break;
+ break;
+ case DW_TAG_structure_type:
+ case DW_TAG_union_type:
+ {
+ // Add elements to structure type.
+ DIArray Elements = CTy.getTypeArray();
+
+ // A forward struct declared type may not have elements available.
+ if (Elements.isNull())
+ break;
+
+ // Add elements to structure type.
+ for (unsigned i = 0, N = Elements.getNumElements(); i < N; ++i) {
+ DIDescriptor Element = Elements.getElement(i);
+ DIE *ElemDie = NULL;
+ if (Element.getTag() == dwarf::DW_TAG_subprogram)
+ ElemDie = CreateSubprogramDIE(DW_Unit,
+ DISubprogram(Element.getGV()));
+ else if (Element.getTag() == dwarf::DW_TAG_variable) // ???
+ ElemDie = CreateGlobalVariableDIE(DW_Unit,
+ DIGlobalVariable(Element.getGV()));
+ else {
+ DIDerivedType DT = DIDerivedType(Element.getGV());
+ assert (DT.isDerivedType(DT.getTag())
+ && "Unexpected struct element type");
+ ElemDie = new DIE(DT.getTag());
+ AddType(DW_Unit, ElemDie, DT);
+ }
+ Buffer.AddChild(ElemDie);
+ }
}
+ break;
+ default:
+ break;
}
// Add name if not anonymous or intermediate type.
// 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);
+ 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.
- if (!TyDesc->isForwardDecl())
- AddSourceLine(&Buffer, TyDesc->getFile(), TyDesc->getLine());
- }
-
- /// NewCompileUnit - Create new compile unit and it's debug information entry.
- ///
- CompileUnit *NewCompileUnit(CompileUnitDesc *UnitDesc, unsigned ID) {
- // Construct debug information entry.
- 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, UnitDesc->getProducer());
- AddUInt (Die, DW_AT_language, DW_FORM_data1, UnitDesc->getLanguage());
- AddString(Die, DW_AT_name, DW_FORM_string, UnitDesc->getFileName());
- 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);
-
- // Add Unit to compile unit map.
- DescToUnitMap[UnitDesc] = Unit;
-
- return Unit;
+ // 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();
+ 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 (Element.getTag() == dwarf::DW_TAG_subrange_type)
+ ConstructSubrangeDIE(Buffer, DISubrange(Element.getGV()), IndexTy);
+ }
}
- /// GetBaseCompileUnit - Get the main compile unit.
- ///
- CompileUnit *GetBaseCompileUnit() const {
- CompileUnit *Unit = CompileUnits[0];
- assert(Unit && "Missing compile unit.");
- return Unit;
- }
+ /// ConstructEnumTypeDIE - Construct enum type DIE from
+ /// DIEnumerator.
+ DIE *ConstructEnumTypeDIE(CompileUnit *DW_Unit, DIEnumerator *ETy) {
- /// FindCompileUnit - Get the compile unit for the given descriptor.
- ///
- CompileUnit *FindCompileUnit(CompileUnitDesc *UnitDesc) {
- CompileUnit *Unit = DescToUnitMap[UnitDesc];
- assert(Unit && "Missing compile unit.");
- return Unit;
+ 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);
+ return Enumerator;
}
- /// NewGlobalVariable - Add a new global variable DIE.
- ///
- DIE *NewGlobalVariable(GlobalVariableDesc *GVD) {
- // Get the compile unit context.
- CompileUnitDesc *UnitDesc =
- static_cast<CompileUnitDesc *>(GVD->getContext());
- CompileUnit *Unit = GetBaseCompileUnit();
-
- // Check for pre-existence.
- DIE *&Slot = Unit->getDieMapSlotFor(GVD);
- if (Slot) return Slot;
-
- // Get the global variable itself.
- GlobalVariable *GV = GVD->getGlobalVariable();
-
- const std::string &Name = GVD->getName();
- const std::string &FullName = GVD->getFullName();
- const std::string &LinkageName = GVD->getLinkageName();
- // Create the global's variable DIE.
- DIE *VariableDie = new DIE(DW_TAG_variable);
- AddString(VariableDie, DW_AT_name, DW_FORM_string, Name);
- if (!LinkageName.empty()) {
- AddString(VariableDie, DW_AT_MIPS_linkage_name, DW_FORM_string,
- LinkageName);
- }
- AddType(VariableDie, GVD->getType(), Unit);
- if (!GVD->isStatic())
- AddUInt(VariableDie, DW_AT_external, DW_FORM_flag, 1);
-
- // Add source line info if available.
- AddSourceLine(VariableDie, UnitDesc, GVD->getLine());
-
- // Add address.
- DIEBlock *Block = new DIEBlock();
- AddUInt(Block, 0, DW_FORM_data1, DW_OP_addr);
- AddObjectLabel(Block, 0, DW_FORM_udata, Asm->getGlobalLinkName(GV));
- AddBlock(VariableDie, DW_AT_location, 0, Block);
-
- // Add to map.
- Slot = VariableDie;
-
- // Add to context owner.
- Unit->getDie()->AddChild(VariableDie);
-
- // Expose as global.
- // FIXME - need to check external flag.
- Unit->AddGlobal(FullName, VariableDie);
-
- return VariableDie;
+ /// CreateGlobalVariableDIE - Create new DIE using GV.
+ DIE *CreateGlobalVariableDIE(CompileUnit *DW_Unit, const DIGlobalVariable &GV)
+ {
+ DIE *GVDie = new DIE(DW_TAG_variable);
+ AddString(GVDie, DW_AT_name, DW_FORM_string, GV.getName());
+ const std::string &LinkageName = GV.getLinkageName();
+ if (!LinkageName.empty())
+ AddString(GVDie, DW_AT_MIPS_linkage_name, DW_FORM_string, LinkageName);
+ AddType(DW_Unit, GVDie, GV.getType());
+ if (!GV.isLocalToUnit())
+ AddUInt(GVDie, DW_AT_external, DW_FORM_flag, 1);
+ AddSourceLine(GVDie, &GV);
+ return GVDie;
+ }
+
+ /// CreateSubprogramDIE - Create new DIE using SP.
+ DIE *CreateSubprogramDIE(CompileUnit *DW_Unit,
+ const DISubprogram &SP,
+ bool IsConstructor = false) {
+ DIE *SPDie = new DIE(DW_TAG_subprogram);
+ AddString(SPDie, DW_AT_name, DW_FORM_string, SP.getName());
+ const std::string &LinkageName = SP.getLinkageName();
+ if (!LinkageName.empty())
+ AddString(SPDie, DW_AT_MIPS_linkage_name, DW_FORM_string,
+ LinkageName);
+ AddSourceLine(SPDie, &SP);
+
+ DICompositeType SPTy = SP.getType();
+ DIArray Args = SPTy.getTypeArray();
+
+ // Add Return Type.
+ if (!IsConstructor)
+ AddType(DW_Unit, SPDie, DIType(Args.getElement(0).getGV()));
+
+ // Add arguments.
+ if (!Args.isNull())
+ for (unsigned i = 1, N = Args.getNumElements(); i < N; ++i) {
+ DIE *Arg = new DIE(DW_TAG_formal_parameter);
+ AddType(DW_Unit, Arg, DIType(Args.getElement(i).getGV()));
+ AddUInt(Arg, DW_AT_artificial, DW_FORM_flag, 1); // ???
+ SPDie->AddChild(Arg);
+ }
+
+ if (!SP.isLocalToUnit())
+ AddUInt(SPDie, DW_AT_external, DW_FORM_flag, 1);
+ return SPDie;
}
- /// NewSubprogram - Add a new subprogram DIE.
+ /// FindCompileUnit - Get the compile unit for the given descriptor.
///
- DIE *NewSubprogram(SubprogramDesc *SPD) {
- // Get the compile unit context.
- CompileUnitDesc *UnitDesc =
- static_cast<CompileUnitDesc *>(SPD->getContext());
- CompileUnit *Unit = GetBaseCompileUnit();
-
- // Check for pre-existence.
- DIE *&Slot = Unit->getDieMapSlotFor(SPD);
- if (Slot) return Slot;
-
- // Gather the details (simplify add attribute code.)
- const std::string &Name = SPD->getName();
- const std::string &FullName = SPD->getFullName();
- const std::string &LinkageName = SPD->getLinkageName();
-
- DIE *SubprogramDie = new DIE(DW_TAG_subprogram);
- AddString(SubprogramDie, DW_AT_name, DW_FORM_string, Name);
- if (!LinkageName.empty()) {
- AddString(SubprogramDie, DW_AT_MIPS_linkage_name, DW_FORM_string,
- LinkageName);
- }
- if (SPD->getType()) AddType(SubprogramDie, SPD->getType(), Unit);
- if (!SPD->isStatic())
- AddUInt(SubprogramDie, DW_AT_external, DW_FORM_flag, 1);
- AddUInt(SubprogramDie, DW_AT_prototyped, DW_FORM_flag, 1);
-
- // Add source line info if available.
- AddSourceLine(SubprogramDie, UnitDesc, SPD->getLine());
-
- // Add to map.
- Slot = SubprogramDie;
-
- // Add to context owner.
- Unit->getDie()->AddChild(SubprogramDie);
-
- // Expose as global.
- Unit->AddGlobal(FullName, SubprogramDie);
-
- return SubprogramDie;
+ CompileUnit *FindCompileUnit(DICompileUnit Unit) {
+ CompileUnit *DW_Unit = DW_CUs[Unit.getGV()];
+ assert(DW_Unit && "Missing compile unit.");
+ return DW_Unit;
}
- /// NewScopeVariable - Create a new scope variable.
+ /// NewDbgScopeVariable - Create a new scope variable.
///
- DIE *NewScopeVariable(DebugVariable *DV, CompileUnit *Unit) {
+ DIE *NewDbgScopeVariable(DbgVariable *DV, CompileUnit *Unit) {
// Get the descriptor.
- VariableDesc *VD = DV->getDesc();
+ const DIVariable &VD = DV->getVariable();
// Translate tag to proper Dwarf tag. The result variable is dropped for
// now.
unsigned Tag;
- switch (VD->getTag()) {
+ 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
// Define variable debug information entry.
DIE *VariableDie = new DIE(Tag);
- AddString(VariableDie, DW_AT_name, DW_FORM_string, VD->getName());
+ AddString(VariableDie, DW_AT_name, DW_FORM_string, VD.getName());
// Add source line info if available.
- AddSourceLine(VariableDie, VD->getFile(), VD->getLine());
+ AddSourceLine(VariableDie, &VD);
// Add variable type.
- AddType(VariableDie, VD->getType(), Unit);
+ AddType(Unit, VariableDie, VD.getType());
// Add variable address.
MachineLocation Location;
return VariableDie;
}
- /// ConstructScope - Construct the components of a scope.
+ /// getOrCreateScope - Returns the scope associated with the given descriptor.
///
- void ConstructScope(DebugScope *ParentScope,
- unsigned ParentStartID, unsigned ParentEndID,
- DIE *ParentDie, CompileUnit *Unit) {
+ DbgScope *getOrCreateScope(GlobalVariable *V) {
+ DbgScope *&Slot = DbgScopeMap[V];
+ if (!Slot) {
+ // FIXME - breaks down when the context is an inlined function.
+ DIDescriptor ParentDesc;
+ DIDescriptor Desc(V);
+ if (Desc.getTag() == dwarf::DW_TAG_lexical_block) {
+ DIBlock Block(V);
+ ParentDesc = Block.getContext();
+ }
+ DbgScope *Parent = ParentDesc.isNull() ?
+ NULL : getOrCreateScope(ParentDesc.getGV());
+ Slot = new DbgScope(Parent, Desc);
+ 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.
- std::vector<DebugVariable *> &Variables = ParentScope->getVariables();
+ SmallVector<DbgVariable *, 8> &Variables = ParentScope->getVariables();
for (unsigned i = 0, N = Variables.size(); i < N; ++i) {
- DIE *VariableDie = NewScopeVariable(Variables[i], Unit);
+ DIE *VariableDie = NewDbgScopeVariable(Variables[i], Unit);
if (VariableDie) ParentDie->AddChild(VariableDie);
}
// Add nested scopes.
- std::vector<DebugScope *> &Scopes = ParentScope->getScopes();
+ SmallVector<DbgScope *, 4> &Scopes = ParentScope->getScopes();
for (unsigned j = 0, M = Scopes.size(); j < M; ++j) {
// Define the Scope debug information entry.
- DebugScope *Scope = Scopes[j];
+ DbgScope *Scope = Scopes[j];
// FIXME - Ignore inlined functions for the time being.
if (!Scope->getParent()) continue;
if (StartID == ParentStartID && EndID == ParentEndID) {
// Just add stuff to the parent scope.
- ConstructScope(Scope, ParentStartID, ParentEndID, ParentDie, Unit);
+ ConstructDbgScope(Scope, ParentStartID, ParentEndID, ParentDie, Unit);
} else {
DIE *ScopeDie = new DIE(DW_TAG_lexical_block);
}
// Add the scope contents.
- ConstructScope(Scope, StartID, EndID, ScopeDie, Unit);
+ ConstructDbgScope(Scope, StartID, EndID, ScopeDie, Unit);
ParentDie->AddChild(ScopeDie);
}
}
}
- /// ConstructRootScope - Construct the scope for the subprogram.
+ /// ConstructRootDbgScope - Construct the scope for the subprogram.
///
- void ConstructRootScope(DebugScope *RootScope) {
+ void ConstructRootDbgScope(DbgScope *RootScope) {
// Exit if there is no root scope.
if (!RootScope) return;
+ DIDescriptor Desc = RootScope->getDesc();
+ if (Desc.isNull())
+ return;
// Get the subprogram debug information entry.
- SubprogramDesc *SPD = cast<SubprogramDesc>(RootScope->getDesc());
+ DISubprogram SPD(Desc.getGV());
// Get the compile unit context.
- CompileUnit *Unit = GetBaseCompileUnit();
+ CompileUnit *Unit = FindCompileUnit(SPD.getCompileUnit());
// Get the subprogram die.
- DIE *SPDie = Unit->getDieMapSlotFor(SPD);
+ DIE *SPDie = Unit->getDieMapSlotFor(SPD.getGV());
assert(SPDie && "Missing subprogram descriptor");
// Add the function bounds.
MachineLocation Location(RI->getFrameRegister(*MF));
AddAddress(SPDie, DW_AT_frame_base, Location);
- ConstructScope(RootScope, 0, 0, SPDie, Unit);
+ ConstructDbgScope(RootScope, 0, 0, SPDie, Unit);
}
- /// ConstructDefaultScope - Construct a default scope for the subprogram.
+ /// ConstructDefaultDbgScope - Construct a default scope for the subprogram.
///
- void ConstructDefaultScope(MachineFunction *MF) {
+ void ConstructDefaultDbgScope(MachineFunction *MF) {
// Find the correct subprogram descriptor.
- std::vector<SubprogramDesc *> Subprograms;
- MMI->getAnchoredDescriptors<SubprogramDesc>(*M, Subprograms);
+ 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) {
- for (unsigned i = 0, N = Subprograms.size(); i < N; ++i) {
- SubprogramDesc *SPD = Subprograms[i];
+ DISubprogram SPD(*I);
- if (SPD->getName() == MF->getFunction()->getName()) {
+ if (SPD.getName() == MF->getFunction()->getName()) {
// Get the compile unit context.
- CompileUnit *Unit = GetBaseCompileUnit();
+ CompileUnit *Unit = FindCompileUnit(SPD.getCompileUnit());
// Get the subprogram die.
- DIE *SPDie = Unit->getDieMapSlotFor(SPD);
+ DIE *SPDie = Unit->getDieMapSlotFor(SPD.getGV());
assert(SPDie && "Missing subprogram descriptor");
// Add the function bounds.
///
void SizeAndOffsets() {
// Process base compile unit.
- CompileUnit *Unit = GetBaseCompileUnit();
- // Compute size of compile unit header
- unsigned Offset = sizeof(int32_t) + // Length of Compilation Unit Info
- sizeof(int16_t) + // DWARF version number
- sizeof(int32_t) + // Offset Into Abbrev. Section
- sizeof(int8_t); // Pointer Size (in bytes)
- SizeAndOffsetDie(Unit->getDie(), Offset, true);
+ for (DenseMap<Value *, CompileUnit *>::iterator CI = DW_CUs.begin(),
+ CE = DW_CUs.end(); CI != CE; ++CI) {
+ CompileUnit *Unit = CI->second;
+ // Compute size of compile unit header
+ unsigned Offset = sizeof(int32_t) + // Length of Compilation Unit Info
+ sizeof(int16_t) + // DWARF version number
+ sizeof(int32_t) + // Offset Into Abbrev. Section
+ sizeof(int8_t); // Pointer Size (in bytes)
+ SizeAndOffsetDie(Unit->getDie(), Offset, true);
+ }
}
/// EmitDebugInfo - Emit the debug info section.
// Start debug info section.
Asm->SwitchToDataSection(TAI->getDwarfInfoSection());
- CompileUnit *Unit = GetBaseCompileUnit();
- DIE *Die = Unit->getDie();
- // Emit the compile units header.
- EmitLabel("info_begin", Unit->getID());
- // Emit size of content not including length itself
- unsigned ContentSize = Die->getSize() +
- sizeof(int16_t) + // DWARF version number
- sizeof(int32_t) + // Offset Into Abbrev. Section
- sizeof(int8_t) + // Pointer Size (in bytes)
- sizeof(int32_t); // FIXME - extra pad for gdb bug.
-
- Asm->EmitInt32(ContentSize); Asm->EOL("Length of Compilation Unit Info");
- Asm->EmitInt16(DWARF_VERSION); Asm->EOL("DWARF version number");
- EmitSectionOffset("abbrev_begin", "section_abbrev", 0, 0, true, false);
- Asm->EOL("Offset Into Abbrev. Section");
- Asm->EmitInt8(TD->getPointerSize()); Asm->EOL("Address Size (in bytes)");
-
- EmitDIE(Die);
- // FIXME - extra padding for gdb bug.
- Asm->EmitInt8(0); Asm->EOL("Extra Pad For GDB");
- Asm->EmitInt8(0); Asm->EOL("Extra Pad For GDB");
- Asm->EmitInt8(0); Asm->EOL("Extra Pad For GDB");
- Asm->EmitInt8(0); Asm->EOL("Extra Pad For GDB");
- EmitLabel("info_end", Unit->getID());
-
- Asm->EOL();
+ for (DenseMap<Value *, CompileUnit *>::iterator CI = DW_CUs.begin(),
+ CE = DW_CUs.end(); CI != CE; ++CI) {
+ CompileUnit *Unit = CI->second;
+ DIE *Die = Unit->getDie();
+ // Emit the compile units header.
+ EmitLabel("info_begin", Unit->getID());
+ // Emit size of content not including length itself
+ unsigned ContentSize = Die->getSize() +
+ sizeof(int16_t) + // DWARF version number
+ sizeof(int32_t) + // Offset Into Abbrev. Section
+ sizeof(int8_t) + // Pointer Size (in bytes)
+ sizeof(int32_t); // FIXME - extra pad for gdb bug.
+
+ Asm->EmitInt32(ContentSize); Asm->EOL("Length of Compilation Unit Info");
+ Asm->EmitInt16(DWARF_VERSION); Asm->EOL("DWARF version number");
+ EmitSectionOffset("abbrev_begin", "section_abbrev", 0, 0, true, false);
+ Asm->EOL("Offset Into Abbrev. Section");
+ Asm->EmitInt8(TD->getPointerSize()); Asm->EOL("Address Size (in bytes)");
+
+ EmitDIE(Die);
+ // FIXME - extra padding for gdb bug.
+ Asm->EmitInt8(0); Asm->EOL("Extra Pad For GDB");
+ Asm->EmitInt8(0); Asm->EOL("Extra Pad For GDB");
+ Asm->EmitInt8(0); Asm->EOL("Extra Pad For GDB");
+ Asm->EmitInt8(0); Asm->EOL("Extra Pad For GDB");
+ EmitLabel("info_end", Unit->getID());
+
+ Asm->EOL();
+ }
}
/// EmitAbbreviations - Emit the abbreviation section.
Asm->EmitInt8(0); Asm->EOL("DW_LNS_const_add_pc arg count");
Asm->EmitInt8(1); Asm->EOL("DW_LNS_fixed_advance_pc arg count");
- const UniqueVector<std::string> &Directories = MMI->getDirectories();
- const UniqueVector<SourceFileInfo> &SourceFiles = MMI->getSourceFiles();
-
// Emit directories.
for (unsigned DirectoryID = 1, NDID = Directories.size();
DirectoryID <= NDID; ++DirectoryID) {
Asm->EmitInt8(0); Asm->EOL("End of directories");
// Emit files.
- for (unsigned SourceID = 1, NSID = SourceFiles.size();
+ for (unsigned SourceID = 1, NSID = SrcFiles.size();
SourceID <= NSID; ++SourceID) {
- const SourceFileInfo &SourceFile = SourceFiles[SourceID];
+ const SrcFileInfo &SourceFile = SrcFiles[SourceID];
Asm->EmitString(SourceFile.getName());
Asm->EOL("Source");
Asm->EmitULEB128Bytes(SourceFile.getDirectoryID());
for (unsigned j = 0; j < SecSrcLinesSize; ++j) {
// Isolate current sections line info.
- const std::vector<SourceLineInfo> &LineInfos = SectionSourceLines[j];
+ const std::vector<SrcLineInfo> &LineInfos = SectionSourceLines[j];
if (VerboseAsm) {
const Section* S = SectionMap[j + 1];
// Construct rows of the address, source, line, column matrix.
for (unsigned i = 0, N = LineInfos.size(); i < N; ++i) {
- const SourceLineInfo &LineInfo = LineInfos[i];
+ const SrcLineInfo &LineInfo = LineInfos[i];
unsigned LabelID = MMI->MappedLabel(LineInfo.getLabelID());
if (!LabelID) continue;
unsigned SourceID = LineInfo.getSourceID();
- const SourceFileInfo &SourceFile = SourceFiles[SourceID];
+ const SrcFileInfo &SourceFile = SrcFiles[SourceID];
unsigned DirectoryID = SourceFile.getDirectoryID();
if (VerboseAsm)
Asm->EOL(Directories[DirectoryID]
"func_begin", DebugFrameInfo.Number);
Asm->EOL("FDE address range");
- EmitFrameMoves("func_begin", DebugFrameInfo.Number, DebugFrameInfo.Moves, false);
+ EmitFrameMoves("func_begin", DebugFrameInfo.Number, DebugFrameInfo.Moves,
+ false);
Asm->EmitAlignment(2, 0, 0, false);
EmitLabel("debug_frame_end", DebugFrameInfo.Number);
// Start the dwarf pubnames section.
Asm->SwitchToDataSection(TAI->getDwarfPubNamesSection());
- CompileUnit *Unit = GetBaseCompileUnit();
-
- EmitDifference("pubnames_end", Unit->getID(),
- "pubnames_begin", Unit->getID(), true);
- Asm->EOL("Length of Public Names Info");
-
- EmitLabel("pubnames_begin", Unit->getID());
-
- Asm->EmitInt16(DWARF_VERSION); Asm->EOL("DWARF Version");
-
- EmitSectionOffset("info_begin", "section_info",
- Unit->getID(), 0, true, false);
- Asm->EOL("Offset of Compilation Unit Info");
-
- EmitDifference("info_end", Unit->getID(), "info_begin", Unit->getID(),true);
- Asm->EOL("Compilation Unit Length");
-
- std::map<std::string, DIE *> &Globals = Unit->getGlobals();
-
- for (std::map<std::string, DIE *>::iterator GI = Globals.begin(),
- GE = Globals.end();
- GI != GE; ++GI) {
- const std::string &Name = GI->first;
- DIE * Entity = GI->second;
-
- Asm->EmitInt32(Entity->getOffset()); Asm->EOL("DIE offset");
- Asm->EmitString(Name); Asm->EOL("External Name");
+ for (DenseMap<Value *, CompileUnit *>::iterator CI = DW_CUs.begin(),
+ CE = DW_CUs.end(); CI != CE; ++CI) {
+ CompileUnit *Unit = CI->second;
+
+ EmitDifference("pubnames_end", Unit->getID(),
+ "pubnames_begin", Unit->getID(), true);
+ Asm->EOL("Length of Public Names Info");
+
+ EmitLabel("pubnames_begin", Unit->getID());
+
+ Asm->EmitInt16(DWARF_VERSION); Asm->EOL("DWARF Version");
+
+ EmitSectionOffset("info_begin", "section_info",
+ Unit->getID(), 0, true, false);
+ Asm->EOL("Offset of Compilation Unit Info");
+
+ EmitDifference("info_end", Unit->getID(), "info_begin", Unit->getID(),
+ true);
+ Asm->EOL("Compilation Unit Length");
+
+ std::map<std::string, DIE *> &Globals = Unit->getGlobals();
+
+ for (std::map<std::string, DIE *>::iterator GI = Globals.begin(),
+ GE = Globals.end();
+ GI != GE; ++GI) {
+ const std::string &Name = GI->first;
+ DIE * Entity = GI->second;
+
+ Asm->EmitInt32(Entity->getOffset()); Asm->EOL("DIE offset");
+ Asm->EmitString(Name); Asm->EOL("External Name");
+ }
+
+ Asm->EmitInt32(0); Asm->EOL("End Mark");
+ EmitLabel("pubnames_end", Unit->getID());
+
+ Asm->EOL();
}
-
- Asm->EmitInt32(0); Asm->EOL("End Mark");
- EmitLabel("pubnames_end", Unit->getID());
-
- Asm->EOL();
}
/// EmitDebugStr - Emit visible names into a debug str section.
Asm->EOL();
}
- /// ConstructCompileUnitDIEs - Create a compile unit DIE for each source and
- /// header file.
- void ConstructCompileUnitDIEs() {
- const UniqueVector<CompileUnitDesc *> CUW = MMI->getCompileUnits();
-
- for (unsigned i = 1, N = CUW.size(); i <= N; ++i) {
- unsigned ID = MMI->RecordSource(CUW[i]);
- CompileUnit *Unit = NewCompileUnit(CUW[i], ID);
- CompileUnits.push_back(Unit);
+ /// 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(*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;
}
}
- /// ConstructGlobalDIEs - Create DIEs for each of the externally visible
- /// global variables.
- void ConstructGlobalDIEs() {
- std::vector<GlobalVariableDesc *> GlobalVariables;
- MMI->getAnchoredDescriptors<GlobalVariableDesc>(*M, GlobalVariables);
+ /// 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(*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 = CreateGlobalVariableDIE(DW_Unit, 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.getGlobal()));
+ AddBlock(VariableDie, DW_AT_location, 0, Block);
+
+ //Add to map.
+ Slot = VariableDie;
+
+ //Add to context owner.
+ DW_Unit->getDie()->AddChild(VariableDie);
- for (unsigned i = 0, N = GlobalVariables.size(); i < N; ++i) {
- GlobalVariableDesc *GVD = GlobalVariables[i];
- NewGlobalVariable(GVD);
+ //Expose as global. FIXME - need to check external flag.
+ DW_Unit->AddGlobal(DI_GV.getName(), VariableDie);
}
}
- /// ConstructSubprogramDIEs - Create DIEs for each of the externally visible
+ /// ConstructSubprograms - Create DIEs for each of the externally visible
/// subprograms.
- void ConstructSubprogramDIEs() {
- std::vector<SubprogramDesc *> Subprograms;
- MMI->getAnchoredDescriptors<SubprogramDesc>(*M, Subprograms);
+ void ConstructSubprograms() {
- for (unsigned i = 0, N = Subprograms.size(); i < N; ++i) {
- SubprogramDesc *SPD = Subprograms[i];
- NewSubprogram(SPD);
+ 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(*RI);
+ CompileUnit *Unit = FindCompileUnit(SP.getCompileUnit());
+
+ // Check for pre-existence.
+ DIE *&Slot = Unit->getDieMapSlotFor(SP.getGV());
+ if (Slot) continue;
+
+ DIE *SubprogramDie = CreateSubprogramDIE(Unit, SP);
+
+ //Add to map.
+ Slot = SubprogramDie;
+ //Add to context owner.
+ Unit->getDie()->AddChild(SubprogramDie);
+ //Expose as global.
+ Unit->AddGlobal(SP.getName(), SubprogramDie);
}
}
//
DwarfDebug(raw_ostream &OS, AsmPrinter *A, const TargetAsmInfo *T)
: Dwarf(OS, A, T, "dbg")
- , CompileUnits()
, AbbreviationsSet(InitAbbreviationsSetSize)
, Abbreviations()
, ValuesSet(InitValuesSetSize)
, Values()
, StringPool()
- , DescToUnitMap()
, SectionMap()
, SectionSourceLines()
, didInitial(false)
, shouldEmit(false)
+ , RootDbgScope(NULL)
{
}
virtual ~DwarfDebug() {
- for (unsigned i = 0, N = CompileUnits.size(); i < N; ++i)
- delete CompileUnits[i];
for (unsigned j = 0, M = Values.size(); j < M; ++j)
delete Values[j];
}
- /// SetModuleInfo - Set machine module information when it's known that pass
- /// manager has created it. Set by the target AsmPrinter.
- void SetModuleInfo(MachineModuleInfo *mmi) {
- // Make sure initial declarations are made.
- if (!MMI && mmi->hasDebugInfo()) {
- MMI = mmi;
- shouldEmit = true;
+ /// SetDebugInfo - Create global DIEs and emit initial debug info sections.
+ /// This is inovked by the target AsmPrinter.
+ void SetDebugInfo(MachineModuleInfo *mmi) {
// Create all the compile unit DIEs.
- ConstructCompileUnitDIEs();
+ ConstructCompileUnits();
+
+ if (DW_CUs.empty())
+ return;
+
+ MMI = mmi;
+ shouldEmit = true;
+ MMI->setDebugInfoAvailability(true);
// Create DIEs for each of the externally visible global variables.
- ConstructGlobalDIEs();
+ ConstructGlobalVariableDIEs();
// Create DIEs for each of the externally visible subprograms.
- ConstructSubprogramDIEs();
+ 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()) {
- const UniqueVector<SourceFileInfo> &SourceFiles = MMI->getSourceFiles();
- const UniqueVector<std::string> &Directories = MMI->getDirectories();
- for (unsigned i = 1, e = SourceFiles.size(); i <= e; ++i) {
- sys::Path FullPath(Directories[SourceFiles[i].getDirectoryID()]);
- bool AppendOk = FullPath.appendComponent(SourceFiles[i].getName());
+ 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());
// Emit initial sections
EmitInitial();
- }
}
/// BeginModule - Emit all Dwarf sections that should come prior to the
// Emit label for the implicitly defined dbg.stoppoint at the start of
// the function.
- const std::vector<SourceLineInfo> &LineInfos = MMI->getSourceLines();
- if (!LineInfos.empty()) {
- const SourceLineInfo &LineInfo = LineInfos[0];
+ if (!Lines.empty()) {
+ const SrcLineInfo &LineInfo = Lines[0];
Asm->printLabel(LineInfo.getLabelID());
}
}
EmitLabel("func_end", SubprogramCount);
// Get function line info.
- const std::vector<SourceLineInfo> &LineInfos = MMI->getSourceLines();
-
- if (!LineInfos.empty()) {
+ if (!Lines.empty()) {
// Get section line info.
unsigned ID = SectionMap.insert(Asm->CurrentSection_);
if (SectionSourceLines.size() < ID) SectionSourceLines.resize(ID);
- std::vector<SourceLineInfo> &SectionLineInfos = SectionSourceLines[ID-1];
+ std::vector<SrcLineInfo> &SectionLineInfos = SectionSourceLines[ID-1];
// Append the function info to section info.
SectionLineInfos.insert(SectionLineInfos.end(),
- LineInfos.begin(), LineInfos.end());
+ Lines.begin(), Lines.end());
}
// Construct scopes for subprogram.
- if (MMI->getRootScope())
- ConstructRootScope(MMI->getRootScope());
+ if (RootDbgScope)
+ ConstructRootDbgScope(RootDbgScope);
else
// FIXME: This is wrong. We are essentially getting past a problem with
// debug information not being able to handle unreachable blocks that have
// 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);
+ ConstructDefaultDbgScope(MF);
DebugFrames.push_back(FunctionDebugFrameInfo(SubprogramCount,
MMI->getFrameMoves()));
+
+ // Clear debug info
+ if (RootDbgScope) {
+ delete RootDbgScope;
+ DbgScopeMap.clear();
+ RootDbgScope = NULL;
+ }
+ Lines.clear();
+ }
+
+public:
+
+ /// ValidDebugInfo - Return true if V represents valid debug info value.
+ bool ValidDebugInfo(Value *V) {
+
+ if (!V)
+ return false;
+
+ if (!shouldEmit)
+ return false;
+
+ GlobalVariable *GV = getGlobalVariable(V);
+ if (!GV)
+ return false;
+
+ if (GV->getLinkage() != GlobalValue::InternalLinkage
+ && GV->getLinkage() != GlobalValue::LinkOnceLinkage)
+ return false;
+
+ DIDescriptor DI(GV);
+ // Check current version. Allow Version6 for now.
+ unsigned Version = DI.getVersion();
+ if (Version != LLVMDebugVersion && Version != LLVMDebugVersion6)
+ return false;
+
+ unsigned Tag = DI.getTag();
+ switch (Tag) {
+ case DW_TAG_variable:
+ assert (DIVariable(GV).Verify() && "Invalid DebugInfo value");
+ break;
+ case DW_TAG_compile_unit:
+ assert (DICompileUnit(GV).Verify() && "Invalid DebugInfo value");
+ break;
+ case DW_TAG_subprogram:
+ assert (DISubprogram(GV).Verify() && "Invalid DebugInfo value");
+ break;
+ default:
+ break;
+ }
+
+ return true;
+ }
+
+ /// RecordSourceLine - Records location information and associates it with a
+ /// label. Returns a unique label ID used to generate a label and provide
+ /// correspondence to the source line list.
+ unsigned RecordSourceLine(Value *V, unsigned Line, unsigned Col) {
+ CompileUnit *Unit = DW_CUs[V];
+ assert (Unit && "Unable to find CompileUnit");
+ unsigned ID = MMI->NextLabelID();
+ Lines.push_back(SrcLineInfo(Line, Col, Unit->getID(), ID));
+ return ID;
+ }
+
+ /// RecordSourceLine - Records location information and associates it with a
+ /// label. Returns a unique label ID used to generate a label and provide
+ /// correspondence to the source line list.
+ unsigned RecordSourceLine(unsigned Line, unsigned Col, unsigned Src) {
+ unsigned ID = MMI->NextLabelID();
+ Lines.push_back(SrcLineInfo(Line, Col, Src, ID));
+ return ID;
+ }
+
+ unsigned getRecordSourceLineCount() {
+ return Lines.size();
+ }
+
+ /// RecordSource - Register a source file with debug info. Returns an source
+ /// ID.
+ 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 = MMI->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 = MMI->NextLabelID();
+ Scope->setEndLabelID(ID);
+ return ID;
+ }
+
+ /// RecordVariable - Indicate the declaration of a local variable.
+ ///
+ void RecordVariable(GlobalVariable *GV, unsigned FrameIndex) {
+ DIDescriptor Desc(GV);
+ DbgScope *Scope = NULL;
+ if (Desc.getTag() == DW_TAG_variable) {
+ // GV is a global variable.
+ DIGlobalVariable DG(GV);
+ Scope = getOrCreateScope(DG.getContext().getGV());
+ } else {
+ // or GV is a local variable.
+ DIVariable DV(GV);
+ Scope = getOrCreateScope(DV.getContext().getGV());
+ }
+ assert (Scope && "Unable to find variable' scope");
+ DbgVariable *DV = new DbgVariable(DIVariable(GV), FrameIndex);
+ Scope->AddVariable(DV);
}
};
Asm->EmitInt8(DW_EH_PE_pcrel | DW_EH_PE_sdata4);
Asm->EOL("LSDA Encoding (pcrel sdata4)");
- if (TAI->doesFDEEncodingRequireSData4()) {
- Asm->EmitInt8(DW_EH_PE_pcrel | DW_EH_PE_sdata4);
- Asm->EOL("FDE Encoding (pcrel sdata4)");
- } else {
- Asm->EmitInt8(DW_EH_PE_pcrel);
- Asm->EOL("FDE Encoding (pcrel)");
- }
+ Asm->EmitInt8(DW_EH_PE_pcrel | DW_EH_PE_sdata4);
+ Asm->EOL("FDE Encoding (pcrel sdata4)");
} else {
Asm->EmitULEB128Bytes(1);
Asm->EOL("Augmentation Size");
- if (TAI->doesFDEEncodingRequireSData4()) {
- Asm->EmitInt8(DW_EH_PE_pcrel | DW_EH_PE_sdata4);
- Asm->EOL("FDE Encoding (pcrel sdata4)");
- } else {
- Asm->EmitInt8(DW_EH_PE_pcrel);
- Asm->EOL("FDE Encoding (pcrel)");
- }
+ Asm->EmitInt8(DW_EH_PE_pcrel | DW_EH_PE_sdata4);
+ Asm->EOL("FDE Encoding (pcrel sdata4)");
}
// Indicate locations of general callee saved registers in frame.
// Externally visible entry into the functions eh frame info.
// If the corresponding function is static, this should not be
// externally visible.
- if (linkage != Function::InternalLinkage) {
+ if (linkage != Function::InternalLinkage &&
+ linkage != Function::PrivateLinkage) {
if (const char *GlobalEHDirective = TAI->getGlobalEHDirective())
O << GlobalEHDirective << EHFrameInfo.FnName << "\n";
}
Asm->EOL("FDE CIE offset");
- EmitReference("eh_func_begin", EHFrameInfo.Number, true,
- TAI->doesRequire32BitFDEReference());
+ EmitReference("eh_func_begin", EHFrameInfo.Number, true, true);
Asm->EOL("FDE initial location");
EmitDifference("eh_func_end", EHFrameInfo.Number,
- "eh_func_begin", EHFrameInfo.Number,
- TAI->doesRequire32BitFDEReference());
+ "eh_func_begin", EHFrameInfo.Number, true);
Asm->EOL("FDE address range");
// If there is a personality and landing pads then point to the language
// Indicate locations of function specific callee saved registers in
// frame.
- EmitFrameMoves("eh_func_begin", EHFrameInfo.Number, EHFrameInfo.Moves, true);
+ EmitFrameMoves("eh_func_begin", EHFrameInfo.Number, EHFrameInfo.Moves,
+ true);
// On Darwin the linker honors the alignment of eh_frame, which means it
// must be 8-byte on 64-bit targets to match what gcc does. Otherwise
/// 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->SetDebugInfo(MMI);
+ DE->SetModuleInfo(MMI);
}
/// EndModule - Emit all Dwarf sections that should come after the content.
// Clear function debug information.
MMI->EndFunction();
}
+
+/// ValidDebugInfo - Return true if V represents valid debug info value.
+bool DwarfWriter::ValidDebugInfo(Value *V) {
+ return DD && DD->ValidDebugInfo(V);
+}
+
+/// RecordSourceLine - Records location information and associates it with a
+/// label. Returns a unique label ID used to generate a label and provide
+/// correspondence to the source line list.
+unsigned DwarfWriter::RecordSourceLine(unsigned Line, unsigned Col,
+ unsigned Src) {
+ return DD->RecordSourceLine(Line, Col, Src);
+}
+
+/// RecordSource - Register a source file with debug info. Returns an source
+/// ID.
+unsigned DwarfWriter::RecordSource(const std::string &Dir,
+ const std::string &File) {
+ return DD->RecordSource(Dir, File);
+}
+
+/// RecordRegionStart - Indicate the start of a region.
+unsigned DwarfWriter::RecordRegionStart(GlobalVariable *V) {
+ return DD->RecordRegionStart(V);
+}
+
+/// RecordRegionEnd - Indicate the end of a region.
+unsigned DwarfWriter::RecordRegionEnd(GlobalVariable *V) {
+ return DD->RecordRegionEnd(V);
+}
+
+/// getRecordSourceLineCount - Count source lines.
+unsigned DwarfWriter::getRecordSourceLineCount() {
+ return DD->getRecordSourceLineCount();
+}
+
+/// RecordVariable - Indicate the declaration of a local variable.
+///
+void DwarfWriter::RecordVariable(GlobalVariable *GV, unsigned FrameIndex) {
+ DD->RecordVariable(GV, FrameIndex);
+}
+
projects / oota-llvm.git / blobdiff