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"
27 class MachineLocation;
33 //===----------------------------------------------------------------------===//
34 /// CompileUnit - This dwarf writer support class manages information associated
35 /// with a source file.
37 /// UniqueID - a numeric ID unique among all CUs in the module
41 /// Language - The DW_AT_language of the compile unit
45 /// Die - Compile unit debug information entry.
47 const OwningPtr<DIE> CUDie;
49 /// Asm - Target of Dwarf emission.
52 // Holders for some common dwarf information.
56 /// IndexTyDie - An anonymous type for index type. Owned by CUDie.
59 /// MDNodeToDieMap - Tracks the mapping of unit level debug informaton
60 /// variables to debug information entries.
61 DenseMap<const MDNode *, DIE *> MDNodeToDieMap;
63 /// MDNodeToDIEEntryMap - Tracks the mapping of unit level debug informaton
64 /// descriptors to debug information entries using a DIEEntry proxy.
65 DenseMap<const MDNode *, DIEEntry *> MDNodeToDIEEntryMap;
67 /// GlobalNames - A map of globally visible named entities for this unit.
69 StringMap<DIE*> GlobalNames;
71 /// GlobalTypes - A map of globally visible types for this unit.
73 StringMap<DIE*> GlobalTypes;
75 /// AccelNames - A map of names for the name accelerator table.
77 StringMap<std::vector<DIE*> > AccelNames;
78 StringMap<std::vector<DIE*> > AccelObjC;
79 StringMap<std::vector<DIE*> > AccelNamespace;
80 StringMap<std::vector<std::pair<DIE*, unsigned> > > AccelTypes;
82 /// DIEBlocks - A list of all the DIEBlocks in use.
83 std::vector<DIEBlock *> DIEBlocks;
85 /// ContainingTypeMap - This map is used to keep track of subprogram DIEs that
86 /// need DW_AT_containing_type attribute. This attribute points to a DIE that
87 /// corresponds to the MDNode mapped with the subprogram DIE.
88 DenseMap<DIE *, const MDNode *> ContainingTypeMap;
90 /// Offset of the CUDie from beginning of debug info section.
91 unsigned DebugInfoOffset;
93 /// getLowerBoundDefault - Return the default lower bound for an array. If the
94 /// DWARF version doesn't handle the language, return -1.
95 int64_t getDefaultLowerBound() const;
97 /// getOrCreateContextDIE - Get context owner's DIE.
98 DIE *getOrCreateContextDIE(DIDescriptor Context);
101 CompileUnit(unsigned UID, unsigned L, DIE *D, AsmPrinter *A, DwarfDebug *DW,
106 unsigned getUniqueID() const { return UniqueID; }
107 unsigned getLanguage() const { return Language; }
108 DIE* getCUDie() const { return CUDie.get(); }
109 unsigned getDebugInfoOffset() const { return DebugInfoOffset; }
110 const StringMap<DIE*> &getGlobalNames() const { return GlobalNames; }
111 const StringMap<DIE*> &getGlobalTypes() const { return GlobalTypes; }
113 const StringMap<std::vector<DIE*> > &getAccelNames() const {
116 const StringMap<std::vector<DIE*> > &getAccelObjC() const {
119 const StringMap<std::vector<DIE*> > &getAccelNamespace() const {
120 return AccelNamespace;
122 const StringMap<std::vector<std::pair<DIE*, unsigned > > >
123 &getAccelTypes() const {
127 void setDebugInfoOffset(unsigned DbgInfoOff) { DebugInfoOffset = DbgInfoOff; }
128 /// hasContent - Return true if this compile unit has something to write out.
130 bool hasContent() const { return !CUDie->getChildren().empty(); }
132 /// addGlobalName - Add a new global entity to the compile unit.
134 void addGlobalName(StringRef Name, DIE *Die) { GlobalNames[Name] = Die; }
136 /// addGlobalType - Add a new global type to the compile unit.
138 void addGlobalType(DIType Ty);
141 /// addAccelName - Add a new name to the name accelerator table.
142 void addAccelName(StringRef Name, DIE *Die) {
143 std::vector<DIE*> &DIEs = AccelNames[Name];
146 void addAccelObjC(StringRef Name, DIE *Die) {
147 std::vector<DIE*> &DIEs = AccelObjC[Name];
150 void addAccelNamespace(StringRef Name, DIE *Die) {
151 std::vector<DIE*> &DIEs = AccelNamespace[Name];
154 void addAccelType(StringRef Name, std::pair<DIE *, unsigned> Die) {
155 std::vector<std::pair<DIE*, unsigned > > &DIEs = AccelTypes[Name];
159 /// getDIE - Returns the debug information entry map slot for the
160 /// specified debug variable.
161 DIE *getDIE(const MDNode *N) { return MDNodeToDieMap.lookup(N); }
163 DIEBlock *getDIEBlock() {
164 return new (DIEValueAllocator) DIEBlock();
167 /// insertDIE - Insert DIE into the map.
168 void insertDIE(const MDNode *N, DIE *D) {
169 MDNodeToDieMap.insert(std::make_pair(N, D));
172 /// getDIEEntry - Returns the debug information entry for the specified
174 DIEEntry *getDIEEntry(const MDNode *N) {
175 DenseMap<const MDNode *, DIEEntry *>::iterator I =
176 MDNodeToDIEEntryMap.find(N);
177 if (I == MDNodeToDIEEntryMap.end())
182 /// insertDIEEntry - Insert debug information entry into the map.
183 void insertDIEEntry(const MDNode *N, DIEEntry *E) {
184 MDNodeToDIEEntryMap.insert(std::make_pair(N, E));
187 /// addDie - Adds or interns the DIE to the compile unit.
189 void addDie(DIE *Buffer) {
190 this->CUDie->addChild(Buffer);
193 // getIndexTyDie - Get an anonymous type for index type.
194 DIE *getIndexTyDie() {
198 // setIndexTyDie - Set D as anonymous type for index which can be reused
200 void setIndexTyDie(DIE *D) {
204 /// addFlag - Add a flag that is true to the DIE.
205 void addFlag(DIE *Die, unsigned Attribute);
207 /// addUInt - Add an unsigned integer attribute data and value.
209 void addUInt(DIE *Die, unsigned Attribute, unsigned Form, uint64_t Integer);
211 /// addSInt - Add an signed integer attribute data and value.
213 void addSInt(DIE *Die, unsigned Attribute, unsigned Form, int64_t Integer);
215 /// addString - Add a string attribute data and value.
217 void addString(DIE *Die, unsigned Attribute, const StringRef Str);
219 /// addLocalString - Add a string attribute data and value.
221 void addLocalString(DIE *Die, unsigned Attribute, const StringRef Str);
223 /// addLabel - Add a Dwarf label attribute data and value.
225 void addLabel(DIE *Die, unsigned Attribute, unsigned Form,
226 const MCSymbol *Label);
228 /// addLabelAddress - Add a dwarf label attribute data and value using
229 /// either DW_FORM_addr or DW_FORM_GNU_addr_index.
231 void addLabelAddress(DIE *Die, unsigned Attribute, MCSymbol *Label);
233 /// addOpAddress - Add a dwarf op address data and value using the
234 /// form given and an op of either DW_FORM_addr or DW_FORM_GNU_addr_index.
236 void addOpAddress(DIE *Die, MCSymbol *Label);
238 /// addDelta - Add a label delta attribute data and value.
240 void addDelta(DIE *Die, unsigned Attribute, unsigned Form,
241 const MCSymbol *Hi, const MCSymbol *Lo);
243 /// addDIEEntry - Add a DIE attribute data and value.
245 void addDIEEntry(DIE *Die, unsigned Attribute, unsigned Form, DIE *Entry);
247 /// addBlock - Add block data.
249 void addBlock(DIE *Die, unsigned Attribute, unsigned Form, DIEBlock *Block);
251 /// addSourceLine - Add location information to specified debug information
253 void addSourceLine(DIE *Die, DIVariable V);
254 void addSourceLine(DIE *Die, DIGlobalVariable G);
255 void addSourceLine(DIE *Die, DISubprogram SP);
256 void addSourceLine(DIE *Die, DIType Ty);
257 void addSourceLine(DIE *Die, DINameSpace NS);
258 void addSourceLine(DIE *Die, DIObjCProperty Ty);
260 /// addAddress - Add an address attribute to a die based on the location
262 void addAddress(DIE *Die, unsigned Attribute,
263 const MachineLocation &Location);
265 /// addConstantValue - Add constant value entry in variable DIE.
266 bool addConstantValue(DIE *Die, const MachineOperand &MO, DIType Ty);
267 bool addConstantValue(DIE *Die, const ConstantInt *CI, bool Unsigned);
268 bool addConstantValue(DIE *Die, const APInt &Val, bool Unsigned);
270 /// addConstantFPValue - Add constant value entry in variable DIE.
271 bool addConstantFPValue(DIE *Die, const MachineOperand &MO);
272 bool addConstantFPValue(DIE *Die, const ConstantFP *CFP);
274 /// addTemplateParams - Add template parameters in buffer.
275 void addTemplateParams(DIE &Buffer, DIArray TParams);
277 /// addRegisterOp - Add register operand.
278 void addRegisterOp(DIE *TheDie, unsigned Reg);
280 /// addRegisterOffset - Add register offset.
281 void addRegisterOffset(DIE *TheDie, unsigned Reg, int64_t Offset);
283 /// addComplexAddress - Start with the address based on the location provided,
284 /// and generate the DWARF information necessary to find the actual variable
285 /// (navigating the extra location information encoded in the type) based on
286 /// the starting location. Add the DWARF information to the die.
288 void addComplexAddress(DbgVariable *&DV, DIE *Die, unsigned Attribute,
289 const MachineLocation &Location);
291 // FIXME: Should be reformulated in terms of addComplexAddress.
292 /// addBlockByrefAddress - Start with the address based on the location
293 /// provided, and generate the DWARF information necessary to find the
294 /// actual Block variable (navigating the Block struct) based on the
295 /// starting location. Add the DWARF information to the die. Obsolete,
296 /// please use addComplexAddress instead.
298 void addBlockByrefAddress(DbgVariable *&DV, DIE *Die, unsigned Attribute,
299 const MachineLocation &Location);
301 /// addVariableAddress - Add DW_AT_location attribute for a
302 /// DbgVariable based on provided MachineLocation.
303 void addVariableAddress(DbgVariable *&DV, DIE *Die, MachineLocation Location);
305 /// addToContextOwner - Add Die into the list of its context owner's children.
306 void addToContextOwner(DIE *Die, DIDescriptor Context);
308 /// addType - Add a new type attribute to the specified entity. This takes
309 /// and attribute parameter because DW_AT_friend attributes are also
311 void addType(DIE *Entity, DIType Ty, unsigned Attribute = dwarf::DW_AT_type);
313 /// getOrCreateNameSpace - Create a DIE for DINameSpace.
314 DIE *getOrCreateNameSpace(DINameSpace NS);
316 /// getOrCreateSubprogramDIE - Create new DIE using SP.
317 DIE *getOrCreateSubprogramDIE(DISubprogram SP);
319 /// getOrCreateTypeDIE - Find existing DIE or create new DIE for the
321 DIE *getOrCreateTypeDIE(const MDNode *N);
323 /// getOrCreateTemplateTypeParameterDIE - Find existing DIE or create new DIE
324 /// for the given DITemplateTypeParameter.
325 DIE *getOrCreateTemplateTypeParameterDIE(DITemplateTypeParameter TP);
327 /// getOrCreateTemplateValueParameterDIE - Find existing DIE or create
328 /// new DIE for the given DITemplateValueParameter.
329 DIE *getOrCreateTemplateValueParameterDIE(DITemplateValueParameter TVP);
331 /// createDIEEntry - Creates a new DIEEntry to be a proxy for a debug
332 /// information entry.
333 DIEEntry *createDIEEntry(DIE *Entry);
335 /// createGlobalVariableDIE - create global variable DIE.
336 void createGlobalVariableDIE(const MDNode *N);
338 void addPubTypes(DISubprogram SP);
340 /// constructTypeDIE - Construct basic type die from DIBasicType.
341 void constructTypeDIE(DIE &Buffer,
344 /// constructTypeDIE - Construct derived type die from DIDerivedType.
345 void constructTypeDIE(DIE &Buffer,
348 /// constructTypeDIE - Construct type DIE from DICompositeType.
349 void constructTypeDIE(DIE &Buffer,
350 DICompositeType CTy);
352 /// constructSubrangeDIE - Construct subrange DIE from DISubrange.
353 void constructSubrangeDIE(DIE &Buffer, DISubrange SR, DIE *IndexTy);
355 /// constructArrayTypeDIE - Construct array type DIE from DICompositeType.
356 void constructArrayTypeDIE(DIE &Buffer,
357 DICompositeType *CTy);
359 /// constructEnumTypeDIE - Construct enum type DIE from DIEnumerator.
360 DIE *constructEnumTypeDIE(DIEnumerator ETy);
362 /// constructContainingTypeDIEs - Construct DIEs for types that contain
364 void constructContainingTypeDIEs();
366 /// constructVariableDIE - Construct a DIE for the given DbgVariable.
367 DIE *constructVariableDIE(DbgVariable *DV, bool isScopeAbstract);
369 /// createMemberDIE - Create new member DIE.
370 DIE *createMemberDIE(DIDerivedType DT);
372 /// createStaticMemberDIE - Create new static data member DIE.
373 DIE *createStaticMemberDIE(DIDerivedType DT);
377 // DIEValueAllocator - All DIEValues are allocated through this allocator.
378 BumpPtrAllocator DIEValueAllocator;
379 DIEInteger *DIEIntegerOne;
382 } // end llvm namespace