1 //===-- llvm/CodeGen/DwarfCompileUnit.h - Dwarf Compile Unit ---*- C++ -*--===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file contains support for writing dwarf compile unit.
12 //===----------------------------------------------------------------------===//
14 #ifndef CODEGEN_ASMPRINTER_DWARFCOMPILEUNIT_H
15 #define CODEGEN_ASMPRINTER_DWARFCOMPILEUNIT_H
18 #include "llvm/ADT/DenseMap.h"
19 #include "llvm/ADT/OwningPtr.h"
20 #include "llvm/ADT/StringMap.h"
21 #include "llvm/DebugInfo.h"
26 class MachineLocation;
31 //===----------------------------------------------------------------------===//
32 /// CompileUnit - This dwarf writer support class manages information associated
33 /// with a source file.
35 /// UniqueID - a numeric ID unique among all CUs in the module
39 /// Language - The DW_AT_language of the compile unit
43 /// Die - Compile unit debug information entry.
45 const OwningPtr<DIE> CUDie;
47 /// Asm - Target of Dwarf emission.
52 /// IndexTyDie - An anonymous type for index type. Owned by CUDie.
55 /// MDNodeToDieMap - Tracks the mapping of unit level debug informaton
56 /// variables to debug information entries.
57 DenseMap<const MDNode *, DIE *> MDNodeToDieMap;
59 /// MDNodeToDIEEntryMap - Tracks the mapping of unit level debug informaton
60 /// descriptors to debug information entries using a DIEEntry proxy.
61 DenseMap<const MDNode *, DIEEntry *> MDNodeToDIEEntryMap;
63 /// GlobalTypes - A map of globally visible types for this unit.
65 StringMap<DIE*> GlobalTypes;
67 /// AccelNames - A map of names for the name accelerator table.
69 StringMap<std::vector<DIE*> > AccelNames;
70 StringMap<std::vector<DIE*> > AccelObjC;
71 StringMap<std::vector<DIE*> > AccelNamespace;
72 StringMap<std::vector<std::pair<DIE*, unsigned> > > AccelTypes;
74 /// DIEBlocks - A list of all the DIEBlocks in use.
75 std::vector<DIEBlock *> DIEBlocks;
77 /// ContainingTypeMap - This map is used to keep track of subprogram DIEs that
78 /// need DW_AT_containing_type attribute. This attribute points to a DIE that
79 /// corresponds to the MDNode mapped with the subprogram DIE.
80 DenseMap<DIE *, const MDNode *> ContainingTypeMap;
82 int64_t getLowerBoundDefault() const;
85 CompileUnit(unsigned UID, unsigned L, DIE *D, AsmPrinter *A, DwarfDebug *DW);
89 unsigned getUniqueID() const { return UniqueID; }
90 unsigned getLanguage() const { return Language; }
91 DIE* getCUDie() const { return CUDie.get(); }
92 const StringMap<DIE*> &getGlobalTypes() const { return GlobalTypes; }
94 const StringMap<std::vector<DIE*> > &getAccelNames() const {
97 const StringMap<std::vector<DIE*> > &getAccelObjC() const {
100 const StringMap<std::vector<DIE*> > &getAccelNamespace() const {
101 return AccelNamespace;
103 const StringMap<std::vector<std::pair<DIE*, unsigned > > >
104 &getAccelTypes() const {
108 /// hasContent - Return true if this compile unit has something to write out.
110 bool hasContent() const { return !CUDie->getChildren().empty(); }
112 /// addGlobalType - Add a new global type to the compile unit.
114 void addGlobalType(DIType Ty);
117 /// addAccelName - Add a new name to the name accelerator table.
118 void addAccelName(StringRef Name, DIE *Die) {
119 std::vector<DIE*> &DIEs = AccelNames[Name];
122 void addAccelObjC(StringRef Name, DIE *Die) {
123 std::vector<DIE*> &DIEs = AccelObjC[Name];
126 void addAccelNamespace(StringRef Name, DIE *Die) {
127 std::vector<DIE*> &DIEs = AccelNamespace[Name];
130 void addAccelType(StringRef Name, std::pair<DIE *, unsigned> Die) {
131 std::vector<std::pair<DIE*, unsigned > > &DIEs = AccelTypes[Name];
135 /// getDIE - Returns the debug information entry map slot for the
136 /// specified debug variable.
137 DIE *getDIE(const MDNode *N) { return MDNodeToDieMap.lookup(N); }
139 DIEBlock *getDIEBlock() {
140 return new (DIEValueAllocator) DIEBlock();
143 /// insertDIE - Insert DIE into the map.
144 void insertDIE(const MDNode *N, DIE *D) {
145 MDNodeToDieMap.insert(std::make_pair(N, D));
148 /// getDIEEntry - Returns the debug information entry for the specified
150 DIEEntry *getDIEEntry(const MDNode *N) {
151 DenseMap<const MDNode *, DIEEntry *>::iterator I =
152 MDNodeToDIEEntryMap.find(N);
153 if (I == MDNodeToDIEEntryMap.end())
158 /// insertDIEEntry - Insert debug information entry into the map.
159 void insertDIEEntry(const MDNode *N, DIEEntry *E) {
160 MDNodeToDIEEntryMap.insert(std::make_pair(N, E));
163 /// addDie - Adds or interns the DIE to the compile unit.
165 void addDie(DIE *Buffer) {
166 this->CUDie->addChild(Buffer);
169 // getIndexTyDie - Get an anonymous type for index type.
170 DIE *getIndexTyDie() {
174 // setIndexTyDie - Set D as anonymous type for index which can be reused
176 void setIndexTyDie(DIE *D) {
180 /// addFlag - Add a flag that is true to the DIE.
181 void addFlag(DIE *Die, unsigned Attribute);
183 /// addUInt - Add an unsigned integer attribute data and value.
185 void addUInt(DIE *Die, unsigned Attribute, unsigned Form, uint64_t Integer);
187 /// addSInt - Add an signed integer attribute data and value.
189 void addSInt(DIE *Die, unsigned Attribute, unsigned Form, int64_t Integer);
191 /// addString - Add a string attribute data and value.
193 void addString(DIE *Die, unsigned Attribute, const StringRef Str);
195 /// addLabel - Add a Dwarf label attribute data and value.
197 void addLabel(DIE *Die, unsigned Attribute, unsigned Form,
198 const MCSymbol *Label);
200 /// addDelta - Add a label delta attribute data and value.
202 void addDelta(DIE *Die, unsigned Attribute, unsigned Form,
203 const MCSymbol *Hi, const MCSymbol *Lo);
205 /// addDIEEntry - Add a DIE attribute data and value.
207 void addDIEEntry(DIE *Die, unsigned Attribute, unsigned Form, DIE *Entry);
209 /// addBlock - Add block data.
211 void addBlock(DIE *Die, unsigned Attribute, unsigned Form, DIEBlock *Block);
213 /// addSourceLine - Add location information to specified debug information
215 void addSourceLine(DIE *Die, DIVariable V);
216 void addSourceLine(DIE *Die, DIGlobalVariable G);
217 void addSourceLine(DIE *Die, DISubprogram SP);
218 void addSourceLine(DIE *Die, DIType Ty);
219 void addSourceLine(DIE *Die, DINameSpace NS);
220 void addSourceLine(DIE *Die, DIObjCProperty Ty);
222 /// addAddress - Add an address attribute to a die based on the location
224 void addAddress(DIE *Die, unsigned Attribute,
225 const MachineLocation &Location);
227 /// addConstantValue - Add constant value entry in variable DIE.
228 bool addConstantValue(DIE *Die, const MachineOperand &MO, DIType Ty);
229 bool addConstantValue(DIE *Die, const ConstantInt *CI, bool Unsigned);
231 /// addConstantFPValue - Add constant value entry in variable DIE.
232 bool addConstantFPValue(DIE *Die, const MachineOperand &MO);
234 /// addTemplateParams - Add template parameters in buffer.
235 void addTemplateParams(DIE &Buffer, DIArray TParams);
237 /// addRegisterOp - Add register operand.
238 void addRegisterOp(DIE *TheDie, unsigned Reg);
240 /// addRegisterOffset - Add register offset.
241 void addRegisterOffset(DIE *TheDie, unsigned Reg, int64_t Offset);
243 /// addComplexAddress - Start with the address based on the location provided,
244 /// and generate the DWARF information necessary to find the actual variable
245 /// (navigating the extra location information encoded in the type) based on
246 /// the starting location. Add the DWARF information to the die.
248 void addComplexAddress(DbgVariable *&DV, DIE *Die, unsigned Attribute,
249 const MachineLocation &Location);
251 // FIXME: Should be reformulated in terms of addComplexAddress.
252 /// addBlockByrefAddress - Start with the address based on the location
253 /// provided, and generate the DWARF information necessary to find the
254 /// actual Block variable (navigating the Block struct) based on the
255 /// starting location. Add the DWARF information to the die. Obsolete,
256 /// please use addComplexAddress instead.
258 void addBlockByrefAddress(DbgVariable *&DV, DIE *Die, unsigned Attribute,
259 const MachineLocation &Location);
261 /// addVariableAddress - Add DW_AT_location attribute for a
262 /// DbgVariable based on provided MachineLocation.
263 void addVariableAddress(DbgVariable *&DV, DIE *Die, MachineLocation Location);
265 /// addToContextOwner - Add Die into the list of its context owner's children.
266 void addToContextOwner(DIE *Die, DIDescriptor Context);
268 /// addType - Add a new type attribute to the specified entity. This takes
269 /// and attribute parameter because DW_AT_friend attributes are also
271 void addType(DIE *Entity, DIType Ty, unsigned Attribute = dwarf::DW_AT_type);
273 /// getOrCreateNameSpace - Create a DIE for DINameSpace.
274 DIE *getOrCreateNameSpace(DINameSpace NS);
276 /// getOrCreateSubprogramDIE - Create new DIE using SP.
277 DIE *getOrCreateSubprogramDIE(DISubprogram SP);
279 /// getOrCreateTypeDIE - Find existing DIE or create new DIE for the
281 DIE *getOrCreateTypeDIE(const MDNode *N);
283 /// getOrCreateTemplateTypeParameterDIE - Find existing DIE or create new DIE
284 /// for the given DITemplateTypeParameter.
285 DIE *getOrCreateTemplateTypeParameterDIE(DITemplateTypeParameter TP);
287 /// getOrCreateTemplateValueParameterDIE - Find existing DIE or create
288 /// new DIE for the given DITemplateValueParameter.
289 DIE *getOrCreateTemplateValueParameterDIE(DITemplateValueParameter TVP);
291 /// createDIEEntry - Creates a new DIEEntry to be a proxy for a debug
292 /// information entry.
293 DIEEntry *createDIEEntry(DIE *Entry);
295 /// createGlobalVariableDIE - create global variable DIE.
296 void createGlobalVariableDIE(const MDNode *N);
298 void addPubTypes(DISubprogram SP);
300 /// constructTypeDIE - Construct basic type die from DIBasicType.
301 void constructTypeDIE(DIE &Buffer,
304 /// constructTypeDIE - Construct derived type die from DIDerivedType.
305 void constructTypeDIE(DIE &Buffer,
308 /// constructTypeDIE - Construct type DIE from DICompositeType.
309 void constructTypeDIE(DIE &Buffer,
310 DICompositeType CTy);
312 /// constructSubrangeDIE - Construct subrange DIE from DISubrange.
313 void constructSubrangeDIE(DIE &Buffer, DISubrange SR, DIE *IndexTy);
315 /// constructArrayTypeDIE - Construct array type DIE from DICompositeType.
316 void constructArrayTypeDIE(DIE &Buffer,
317 DICompositeType *CTy);
319 /// constructEnumTypeDIE - Construct enum type DIE from DIEnumerator.
320 DIE *constructEnumTypeDIE(DIEnumerator ETy);
322 /// constructContainingTypeDIEs - Construct DIEs for types that contain
324 void constructContainingTypeDIEs();
326 /// constructVariableDIE - Construct a DIE for the given DbgVariable.
327 DIE *constructVariableDIE(DbgVariable *DV, bool isScopeAbstract);
329 /// createMemberDIE - Create new member DIE.
330 DIE *createMemberDIE(DIDerivedType DT);
334 // DIEValueAllocator - All DIEValues are allocated through this allocator.
335 BumpPtrAllocator DIEValueAllocator;
336 DIEInteger *DIEIntegerOne;
339 } // end llvm namespace