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 /// getLowerBoundDefault - Return the default lower bound for an array. If the
83 /// DWARF version doesn't handle the language, return -1.
84 int64_t getDefaultLowerBound() const;
87 CompileUnit(unsigned UID, unsigned L, DIE *D, AsmPrinter *A, DwarfDebug *DW);
91 unsigned getUniqueID() const { return UniqueID; }
92 unsigned getLanguage() const { return Language; }
93 DIE* getCUDie() const { return CUDie.get(); }
94 const StringMap<DIE*> &getGlobalTypes() const { return GlobalTypes; }
96 const StringMap<std::vector<DIE*> > &getAccelNames() const {
99 const StringMap<std::vector<DIE*> > &getAccelObjC() const {
102 const StringMap<std::vector<DIE*> > &getAccelNamespace() const {
103 return AccelNamespace;
105 const StringMap<std::vector<std::pair<DIE*, unsigned > > >
106 &getAccelTypes() const {
110 /// hasContent - Return true if this compile unit has something to write out.
112 bool hasContent() const { return !CUDie->getChildren().empty(); }
114 /// addGlobalType - Add a new global type to the compile unit.
116 void addGlobalType(DIType Ty);
119 /// addAccelName - Add a new name to the name accelerator table.
120 void addAccelName(StringRef Name, DIE *Die) {
121 std::vector<DIE*> &DIEs = AccelNames[Name];
124 void addAccelObjC(StringRef Name, DIE *Die) {
125 std::vector<DIE*> &DIEs = AccelObjC[Name];
128 void addAccelNamespace(StringRef Name, DIE *Die) {
129 std::vector<DIE*> &DIEs = AccelNamespace[Name];
132 void addAccelType(StringRef Name, std::pair<DIE *, unsigned> Die) {
133 std::vector<std::pair<DIE*, unsigned > > &DIEs = AccelTypes[Name];
137 /// getDIE - Returns the debug information entry map slot for the
138 /// specified debug variable.
139 DIE *getDIE(const MDNode *N) { return MDNodeToDieMap.lookup(N); }
141 DIEBlock *getDIEBlock() {
142 return new (DIEValueAllocator) DIEBlock();
145 /// insertDIE - Insert DIE into the map.
146 void insertDIE(const MDNode *N, DIE *D) {
147 MDNodeToDieMap.insert(std::make_pair(N, D));
150 /// getDIEEntry - Returns the debug information entry for the specified
152 DIEEntry *getDIEEntry(const MDNode *N) {
153 DenseMap<const MDNode *, DIEEntry *>::iterator I =
154 MDNodeToDIEEntryMap.find(N);
155 if (I == MDNodeToDIEEntryMap.end())
160 /// insertDIEEntry - Insert debug information entry into the map.
161 void insertDIEEntry(const MDNode *N, DIEEntry *E) {
162 MDNodeToDIEEntryMap.insert(std::make_pair(N, E));
165 /// addDie - Adds or interns the DIE to the compile unit.
167 void addDie(DIE *Buffer) {
168 this->CUDie->addChild(Buffer);
171 // getIndexTyDie - Get an anonymous type for index type.
172 DIE *getIndexTyDie() {
176 // setIndexTyDie - Set D as anonymous type for index which can be reused
178 void setIndexTyDie(DIE *D) {
182 /// addFlag - Add a flag that is true to the DIE.
183 void addFlag(DIE *Die, unsigned Attribute);
185 /// addUInt - Add an unsigned integer attribute data and value.
187 void addUInt(DIE *Die, unsigned Attribute, unsigned Form, uint64_t Integer);
189 /// addSInt - Add an signed integer attribute data and value.
191 void addSInt(DIE *Die, unsigned Attribute, unsigned Form, int64_t Integer);
193 /// addString - Add a string attribute data and value.
195 void addString(DIE *Die, unsigned Attribute, const StringRef Str);
197 /// addLabel - Add a Dwarf label attribute data and value.
199 void addLabel(DIE *Die, unsigned Attribute, unsigned Form,
200 const MCSymbol *Label);
202 /// addDelta - Add a label delta attribute data and value.
204 void addDelta(DIE *Die, unsigned Attribute, unsigned Form,
205 const MCSymbol *Hi, const MCSymbol *Lo);
207 /// addDIEEntry - Add a DIE attribute data and value.
209 void addDIEEntry(DIE *Die, unsigned Attribute, unsigned Form, DIE *Entry);
211 /// addBlock - Add block data.
213 void addBlock(DIE *Die, unsigned Attribute, unsigned Form, DIEBlock *Block);
215 /// addSourceLine - Add location information to specified debug information
217 void addSourceLine(DIE *Die, DIVariable V);
218 void addSourceLine(DIE *Die, DIGlobalVariable G);
219 void addSourceLine(DIE *Die, DISubprogram SP);
220 void addSourceLine(DIE *Die, DIType Ty);
221 void addSourceLine(DIE *Die, DINameSpace NS);
222 void addSourceLine(DIE *Die, DIObjCProperty Ty);
224 /// addAddress - Add an address attribute to a die based on the location
226 void addAddress(DIE *Die, unsigned Attribute,
227 const MachineLocation &Location);
229 /// addConstantValue - Add constant value entry in variable DIE.
230 bool addConstantValue(DIE *Die, const MachineOperand &MO, DIType Ty);
231 bool addConstantValue(DIE *Die, const ConstantInt *CI, bool Unsigned);
233 /// addConstantFPValue - Add constant value entry in variable DIE.
234 bool addConstantFPValue(DIE *Die, const MachineOperand &MO);
236 /// addTemplateParams - Add template parameters in buffer.
237 void addTemplateParams(DIE &Buffer, DIArray TParams);
239 /// addRegisterOp - Add register operand.
240 void addRegisterOp(DIE *TheDie, unsigned Reg);
242 /// addRegisterOffset - Add register offset.
243 void addRegisterOffset(DIE *TheDie, unsigned Reg, int64_t Offset);
245 /// addComplexAddress - Start with the address based on the location provided,
246 /// and generate the DWARF information necessary to find the actual variable
247 /// (navigating the extra location information encoded in the type) based on
248 /// the starting location. Add the DWARF information to the die.
250 void addComplexAddress(DbgVariable *&DV, DIE *Die, unsigned Attribute,
251 const MachineLocation &Location);
253 // FIXME: Should be reformulated in terms of addComplexAddress.
254 /// addBlockByrefAddress - Start with the address based on the location
255 /// provided, and generate the DWARF information necessary to find the
256 /// actual Block variable (navigating the Block struct) based on the
257 /// starting location. Add the DWARF information to the die. Obsolete,
258 /// please use addComplexAddress instead.
260 void addBlockByrefAddress(DbgVariable *&DV, DIE *Die, unsigned Attribute,
261 const MachineLocation &Location);
263 /// addVariableAddress - Add DW_AT_location attribute for a
264 /// DbgVariable based on provided MachineLocation.
265 void addVariableAddress(DbgVariable *&DV, DIE *Die, MachineLocation Location);
267 /// addToContextOwner - Add Die into the list of its context owner's children.
268 void addToContextOwner(DIE *Die, DIDescriptor Context);
270 /// addType - Add a new type attribute to the specified entity. This takes
271 /// and attribute parameter because DW_AT_friend attributes are also
273 void addType(DIE *Entity, DIType Ty, unsigned Attribute = dwarf::DW_AT_type);
275 /// getOrCreateNameSpace - Create a DIE for DINameSpace.
276 DIE *getOrCreateNameSpace(DINameSpace NS);
278 /// getOrCreateSubprogramDIE - Create new DIE using SP.
279 DIE *getOrCreateSubprogramDIE(DISubprogram SP);
281 /// getOrCreateTypeDIE - Find existing DIE or create new DIE for the
283 DIE *getOrCreateTypeDIE(const MDNode *N);
285 /// getOrCreateTemplateTypeParameterDIE - Find existing DIE or create new DIE
286 /// for the given DITemplateTypeParameter.
287 DIE *getOrCreateTemplateTypeParameterDIE(DITemplateTypeParameter TP);
289 /// getOrCreateTemplateValueParameterDIE - Find existing DIE or create
290 /// new DIE for the given DITemplateValueParameter.
291 DIE *getOrCreateTemplateValueParameterDIE(DITemplateValueParameter TVP);
293 /// createDIEEntry - Creates a new DIEEntry to be a proxy for a debug
294 /// information entry.
295 DIEEntry *createDIEEntry(DIE *Entry);
297 /// createGlobalVariableDIE - create global variable DIE.
298 void createGlobalVariableDIE(const MDNode *N);
300 void addPubTypes(DISubprogram SP);
302 /// constructTypeDIE - Construct basic type die from DIBasicType.
303 void constructTypeDIE(DIE &Buffer,
306 /// constructTypeDIE - Construct derived type die from DIDerivedType.
307 void constructTypeDIE(DIE &Buffer,
310 /// constructTypeDIE - Construct type DIE from DICompositeType.
311 void constructTypeDIE(DIE &Buffer,
312 DICompositeType CTy);
314 /// constructSubrangeDIE - Construct subrange DIE from DISubrange.
315 void constructSubrangeDIE(DIE &Buffer, DISubrange SR, DIE *IndexTy);
317 /// constructArrayTypeDIE - Construct array type DIE from DICompositeType.
318 void constructArrayTypeDIE(DIE &Buffer,
319 DICompositeType *CTy);
321 /// constructEnumTypeDIE - Construct enum type DIE from DIEnumerator.
322 DIE *constructEnumTypeDIE(DIEnumerator ETy);
324 /// constructContainingTypeDIEs - Construct DIEs for types that contain
326 void constructContainingTypeDIEs();
328 /// constructVariableDIE - Construct a DIE for the given DbgVariable.
329 DIE *constructVariableDIE(DbgVariable *DV, bool isScopeAbstract);
331 /// createMemberDIE - Create new member DIE.
332 DIE *createMemberDIE(DIDerivedType DT);
336 // DIEValueAllocator - All DIEValues are allocated through this allocator.
337 BumpPtrAllocator DIEValueAllocator;
338 DIEInteger *DIEIntegerOne;
341 } // end llvm namespace