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;
32 //===----------------------------------------------------------------------===//
33 /// CompileUnit - This dwarf writer support class manages information associated
34 /// with a source file.
36 /// UniqueID - a numeric ID unique among all CUs in the module
40 /// Language - The DW_AT_language of the compile unit
44 /// Die - Compile unit debug information entry.
46 const OwningPtr<DIE> CUDie;
48 /// Asm - Target of Dwarf emission.
51 // Holders for some common dwarf information.
55 /// IndexTyDie - An anonymous type for index type. Owned by CUDie.
58 /// MDNodeToDieMap - Tracks the mapping of unit level debug informaton
59 /// variables to debug information entries.
60 DenseMap<const MDNode *, DIE *> MDNodeToDieMap;
62 /// MDNodeToDIEEntryMap - Tracks the mapping of unit level debug informaton
63 /// descriptors to debug information entries using a DIEEntry proxy.
64 DenseMap<const MDNode *, DIEEntry *> MDNodeToDIEEntryMap;
66 /// GlobalTypes - A map of globally visible types for this unit.
68 StringMap<DIE*> GlobalTypes;
70 /// AccelNames - A map of names for the name accelerator table.
72 StringMap<std::vector<DIE*> > AccelNames;
73 StringMap<std::vector<DIE*> > AccelObjC;
74 StringMap<std::vector<DIE*> > AccelNamespace;
75 StringMap<std::vector<std::pair<DIE*, unsigned> > > AccelTypes;
77 /// DIEBlocks - A list of all the DIEBlocks in use.
78 std::vector<DIEBlock *> DIEBlocks;
80 /// ContainingTypeMap - This map is used to keep track of subprogram DIEs that
81 /// need DW_AT_containing_type attribute. This attribute points to a DIE that
82 /// corresponds to the MDNode mapped with the subprogram DIE.
83 DenseMap<DIE *, const MDNode *> ContainingTypeMap;
85 /// getLowerBoundDefault - Return the default lower bound for an array. If the
86 /// DWARF version doesn't handle the language, return -1.
87 int64_t getDefaultLowerBound() const;
89 /// getOrCreateContextDIE - Get context owner's DIE.
90 DIE *getOrCreateContextDIE(DIDescriptor Context);
93 CompileUnit(unsigned UID, unsigned L, DIE *D, AsmPrinter *A, DwarfDebug *DW,
98 unsigned getUniqueID() const { return UniqueID; }
99 unsigned getLanguage() const { return Language; }
100 DIE* getCUDie() const { return CUDie.get(); }
101 const StringMap<DIE*> &getGlobalTypes() const { return GlobalTypes; }
103 const StringMap<std::vector<DIE*> > &getAccelNames() const {
106 const StringMap<std::vector<DIE*> > &getAccelObjC() const {
109 const StringMap<std::vector<DIE*> > &getAccelNamespace() const {
110 return AccelNamespace;
112 const StringMap<std::vector<std::pair<DIE*, unsigned > > >
113 &getAccelTypes() const {
117 /// hasContent - Return true if this compile unit has something to write out.
119 bool hasContent() const { return !CUDie->getChildren().empty(); }
121 /// addGlobalType - Add a new global type to the compile unit.
123 void addGlobalType(DIType Ty);
126 /// addAccelName - Add a new name to the name accelerator table.
127 void addAccelName(StringRef Name, DIE *Die) {
128 std::vector<DIE*> &DIEs = AccelNames[Name];
131 void addAccelObjC(StringRef Name, DIE *Die) {
132 std::vector<DIE*> &DIEs = AccelObjC[Name];
135 void addAccelNamespace(StringRef Name, DIE *Die) {
136 std::vector<DIE*> &DIEs = AccelNamespace[Name];
139 void addAccelType(StringRef Name, std::pair<DIE *, unsigned> Die) {
140 std::vector<std::pair<DIE*, unsigned > > &DIEs = AccelTypes[Name];
144 /// getDIE - Returns the debug information entry map slot for the
145 /// specified debug variable.
146 DIE *getDIE(const MDNode *N) { return MDNodeToDieMap.lookup(N); }
148 DIEBlock *getDIEBlock() {
149 return new (DIEValueAllocator) DIEBlock();
152 /// insertDIE - Insert DIE into the map.
153 void insertDIE(const MDNode *N, DIE *D) {
154 MDNodeToDieMap.insert(std::make_pair(N, D));
157 /// getDIEEntry - Returns the debug information entry for the specified
159 DIEEntry *getDIEEntry(const MDNode *N) {
160 DenseMap<const MDNode *, DIEEntry *>::iterator I =
161 MDNodeToDIEEntryMap.find(N);
162 if (I == MDNodeToDIEEntryMap.end())
167 /// insertDIEEntry - Insert debug information entry into the map.
168 void insertDIEEntry(const MDNode *N, DIEEntry *E) {
169 MDNodeToDIEEntryMap.insert(std::make_pair(N, E));
172 /// addDie - Adds or interns the DIE to the compile unit.
174 void addDie(DIE *Buffer) {
175 this->CUDie->addChild(Buffer);
178 // getIndexTyDie - Get an anonymous type for index type.
179 DIE *getIndexTyDie() {
183 // setIndexTyDie - Set D as anonymous type for index which can be reused
185 void setIndexTyDie(DIE *D) {
189 /// addFlag - Add a flag that is true to the DIE.
190 void addFlag(DIE *Die, unsigned Attribute);
192 /// addUInt - Add an unsigned integer attribute data and value.
194 void addUInt(DIE *Die, unsigned Attribute, unsigned Form, uint64_t Integer);
196 /// addSInt - Add an signed integer attribute data and value.
198 void addSInt(DIE *Die, unsigned Attribute, unsigned Form, int64_t Integer);
200 /// addString - Add a string attribute data and value.
202 void addString(DIE *Die, unsigned Attribute, const StringRef Str);
204 /// addLocalString - Add a string attribute data and value.
206 void addLocalString(DIE *Die, unsigned Attribute, const StringRef Str);
208 /// addLabel - Add a Dwarf label attribute data and value.
210 void addLabel(DIE *Die, unsigned Attribute, unsigned Form,
211 const MCSymbol *Label);
213 /// addLabelAddress - Add a dwarf label attribute data and value using
214 /// either DW_FORM_addr or DW_FORM_GNU_addr_index.
216 void addLabelAddress(DIE *Die, unsigned Attribute, MCSymbol *Label);
218 /// addOpAddress - Add a dwarf op address data and value using the
219 /// form given and an op of either DW_FORM_addr or DW_FORM_GNU_addr_index.
221 void addOpAddress(DIE *Die, MCSymbol *Label);
223 /// addDelta - Add a label delta attribute data and value.
225 void addDelta(DIE *Die, unsigned Attribute, unsigned Form,
226 const MCSymbol *Hi, const MCSymbol *Lo);
228 /// addDIEEntry - Add a DIE attribute data and value.
230 void addDIEEntry(DIE *Die, unsigned Attribute, unsigned Form, DIE *Entry);
232 /// addBlock - Add block data.
234 void addBlock(DIE *Die, unsigned Attribute, unsigned Form, DIEBlock *Block);
236 /// addSourceLine - Add location information to specified debug information
238 void addSourceLine(DIE *Die, DIVariable V);
239 void addSourceLine(DIE *Die, DIGlobalVariable G);
240 void addSourceLine(DIE *Die, DISubprogram SP);
241 void addSourceLine(DIE *Die, DIType Ty);
242 void addSourceLine(DIE *Die, DINameSpace NS);
243 void addSourceLine(DIE *Die, DIObjCProperty Ty);
245 /// addAddress - Add an address attribute to a die based on the location
247 void addAddress(DIE *Die, unsigned Attribute,
248 const MachineLocation &Location);
250 /// addConstantValue - Add constant value entry in variable DIE.
251 bool addConstantValue(DIE *Die, const MachineOperand &MO, DIType Ty);
252 bool addConstantValue(DIE *Die, const ConstantInt *CI, bool Unsigned);
254 /// addConstantFPValue - Add constant value entry in variable DIE.
255 bool addConstantFPValue(DIE *Die, const MachineOperand &MO);
257 /// addTemplateParams - Add template parameters in buffer.
258 void addTemplateParams(DIE &Buffer, DIArray TParams);
260 /// addRegisterOp - Add register operand.
261 void addRegisterOp(DIE *TheDie, unsigned Reg);
263 /// addRegisterOffset - Add register offset.
264 void addRegisterOffset(DIE *TheDie, unsigned Reg, int64_t Offset);
266 /// addComplexAddress - Start with the address based on the location provided,
267 /// and generate the DWARF information necessary to find the actual variable
268 /// (navigating the extra location information encoded in the type) based on
269 /// the starting location. Add the DWARF information to the die.
271 void addComplexAddress(DbgVariable *&DV, DIE *Die, unsigned Attribute,
272 const MachineLocation &Location);
274 // FIXME: Should be reformulated in terms of addComplexAddress.
275 /// addBlockByrefAddress - Start with the address based on the location
276 /// provided, and generate the DWARF information necessary to find the
277 /// actual Block variable (navigating the Block struct) based on the
278 /// starting location. Add the DWARF information to the die. Obsolete,
279 /// please use addComplexAddress instead.
281 void addBlockByrefAddress(DbgVariable *&DV, DIE *Die, unsigned Attribute,
282 const MachineLocation &Location);
284 /// addVariableAddress - Add DW_AT_location attribute for a
285 /// DbgVariable based on provided MachineLocation.
286 void addVariableAddress(DbgVariable *&DV, DIE *Die, MachineLocation Location);
288 /// addToContextOwner - Add Die into the list of its context owner's children.
289 void addToContextOwner(DIE *Die, DIDescriptor Context);
291 /// addType - Add a new type attribute to the specified entity. This takes
292 /// and attribute parameter because DW_AT_friend attributes are also
294 void addType(DIE *Entity, DIType Ty, unsigned Attribute = dwarf::DW_AT_type);
296 /// getOrCreateNameSpace - Create a DIE for DINameSpace.
297 DIE *getOrCreateNameSpace(DINameSpace NS);
299 /// getOrCreateSubprogramDIE - Create new DIE using SP.
300 DIE *getOrCreateSubprogramDIE(DISubprogram SP);
302 /// getOrCreateTypeDIE - Find existing DIE or create new DIE for the
304 DIE *getOrCreateTypeDIE(const MDNode *N);
306 /// getOrCreateTemplateTypeParameterDIE - Find existing DIE or create new DIE
307 /// for the given DITemplateTypeParameter.
308 DIE *getOrCreateTemplateTypeParameterDIE(DITemplateTypeParameter TP);
310 /// getOrCreateTemplateValueParameterDIE - Find existing DIE or create
311 /// new DIE for the given DITemplateValueParameter.
312 DIE *getOrCreateTemplateValueParameterDIE(DITemplateValueParameter TVP);
314 /// createDIEEntry - Creates a new DIEEntry to be a proxy for a debug
315 /// information entry.
316 DIEEntry *createDIEEntry(DIE *Entry);
318 /// createGlobalVariableDIE - create global variable DIE.
319 void createGlobalVariableDIE(const MDNode *N);
321 void addPubTypes(DISubprogram SP);
323 /// constructTypeDIE - Construct basic type die from DIBasicType.
324 void constructTypeDIE(DIE &Buffer,
327 /// constructTypeDIE - Construct derived type die from DIDerivedType.
328 void constructTypeDIE(DIE &Buffer,
331 /// constructTypeDIE - Construct type DIE from DICompositeType.
332 void constructTypeDIE(DIE &Buffer,
333 DICompositeType CTy);
335 /// constructSubrangeDIE - Construct subrange DIE from DISubrange.
336 void constructSubrangeDIE(DIE &Buffer, DISubrange SR, DIE *IndexTy);
338 /// constructArrayTypeDIE - Construct array type DIE from DICompositeType.
339 void constructArrayTypeDIE(DIE &Buffer,
340 DICompositeType *CTy);
342 /// constructEnumTypeDIE - Construct enum type DIE from DIEnumerator.
343 DIE *constructEnumTypeDIE(DIEnumerator ETy);
345 /// constructContainingTypeDIEs - Construct DIEs for types that contain
347 void constructContainingTypeDIEs();
349 /// constructVariableDIE - Construct a DIE for the given DbgVariable.
350 DIE *constructVariableDIE(DbgVariable *DV, bool isScopeAbstract);
352 /// createMemberDIE - Create new member DIE.
353 DIE *createMemberDIE(DIDerivedType DT);
355 /// createStaticMemberDIE - Create new static data member DIE.
356 DIE *createStaticMemberDIE(DIDerivedType DT);
360 // DIEValueAllocator - All DIEValues are allocated through this allocator.
361 BumpPtrAllocator DIEValueAllocator;
362 DIEInteger *DIEIntegerOne;
365 } // end llvm namespace