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"
22 #include "llvm/MC/MCExpr.h"
28 class MachineLocation;
34 //===----------------------------------------------------------------------===//
35 /// CompileUnit - This dwarf writer support class manages information associated
36 /// with a source file.
38 /// UniqueID - a numeric ID unique among all CUs in the module
42 /// Node - MDNode for 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 information
60 /// variables to debug information entries.
61 DenseMap<const MDNode *, DIE *> MDNodeToDieMap;
63 /// MDNodeToDIEEntryMap - Tracks the mapping of unit level debug information
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;
91 CompileUnit(unsigned UID, DIE *D, const MDNode *N, AsmPrinter *A,
92 DwarfDebug *DW, DwarfUnits *DWU);
96 unsigned getUniqueID() const { return UniqueID; }
97 uint16_t getLanguage() const { return DICompileUnit(Node).getLanguage(); }
98 const MDNode *getNode() const { return Node; }
99 DIE *getCUDie() const { return CUDie.get(); }
100 const StringMap<DIE *> &getGlobalNames() const { return GlobalNames; }
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 /// addGlobalName - Add a new global entity to the compile unit.
123 void addGlobalName(StringRef Name, DIE *Die);
125 /// addGlobalType - Add a new global type to the compile unit.
127 void addGlobalType(DIType Ty);
129 /// addPubTypes - Add a set of types from the subprogram to the global types.
130 void addPubTypes(DISubprogram SP);
132 /// addAccelName - Add a new name to the name accelerator table.
133 void addAccelName(StringRef Name, DIE *Die);
135 /// addAccelObjC - Add a new name to the ObjC accelerator table.
136 void addAccelObjC(StringRef Name, DIE *Die);
138 /// addAccelNamespace - Add a new name to the namespace accelerator table.
139 void addAccelNamespace(StringRef Name, DIE *Die);
141 /// addAccelType - Add a new type to the type accelerator table.
142 void addAccelType(StringRef Name, std::pair<DIE *, unsigned> Die);
144 /// getDIE - Returns the debug information entry map slot for the
145 /// specified debug variable.
146 DIE *getDIE(const MDNode *N) const { return MDNodeToDieMap.lookup(N); }
148 DIEBlock *getDIEBlock() { return new (DIEValueAllocator) DIEBlock(); }
150 /// insertDIE - Insert DIE into the map.
151 void insertDIE(const MDNode *N, DIE *D) {
152 MDNodeToDieMap.insert(std::make_pair(N, D));
155 /// addDie - Adds or interns the DIE to the compile unit.
157 void addDie(DIE *Buffer) { CUDie->addChild(Buffer); }
159 /// addFlag - Add a flag that is true to the DIE.
160 void addFlag(DIE *Die, uint16_t Attribute);
162 /// addUInt - Add an unsigned integer attribute data and value.
164 void addUInt(DIE *Die, uint16_t Attribute, uint16_t Form, uint64_t Integer);
166 /// addSInt - Add an signed integer attribute data and value.
168 void addSInt(DIE *Die, uint16_t Attribute, uint16_t Form, int64_t Integer);
170 /// addString - Add a string attribute data and value.
172 void addString(DIE *Die, uint16_t Attribute, const StringRef Str);
174 /// addLocalString - Add a string attribute data and value.
176 void addLocalString(DIE *Die, uint16_t Attribute, const StringRef Str);
178 /// addExpr - Add a Dwarf expression attribute data and value.
180 void addExpr(DIE *Die, uint16_t Attribute, uint16_t Form, const MCExpr *Expr);
182 /// addLabel - Add a Dwarf label attribute data and value.
184 void addLabel(DIE *Die, uint16_t Attribute, uint16_t Form,
185 const MCSymbol *Label);
187 /// addLabelAddress - Add a dwarf label attribute data and value using
188 /// either DW_FORM_addr or DW_FORM_GNU_addr_index.
190 void addLabelAddress(DIE *Die, uint16_t Attribute, MCSymbol *Label);
192 /// addOpAddress - Add a dwarf op address data and value using the
193 /// form given and an op of either DW_FORM_addr or DW_FORM_GNU_addr_index.
195 void addOpAddress(DIE *Die, const MCSymbol *Label);
196 void addOpAddress(DIE *Die, const MCSymbolRefExpr *Label);
198 /// addDelta - Add a label delta attribute data and value.
200 void addDelta(DIE *Die, uint16_t Attribute, uint16_t Form, const MCSymbol *Hi,
203 /// addDIEEntry - Add a DIE attribute data and value.
205 void addDIEEntry(DIE *Die, uint16_t Attribute, uint16_t Form, DIE *Entry);
207 /// addBlock - Add block data.
209 void addBlock(DIE *Die, uint16_t Attribute, uint16_t Form, DIEBlock *Block);
211 /// addSourceLine - Add location information to specified debug information
213 void addSourceLine(DIE *Die, DIVariable V);
214 void addSourceLine(DIE *Die, DIGlobalVariable G);
215 void addSourceLine(DIE *Die, DISubprogram SP);
216 void addSourceLine(DIE *Die, DIType Ty);
217 void addSourceLine(DIE *Die, DINameSpace NS);
218 void addSourceLine(DIE *Die, DIObjCProperty Ty);
220 /// addAddress - Add an address attribute to a die based on the location
222 void addAddress(DIE *Die, uint16_t Attribute, const MachineLocation &Location,
223 bool Indirect = false);
225 /// addConstantValue - Add constant value entry in variable DIE.
226 void addConstantValue(DIE *Die, const MachineOperand &MO, DIType Ty);
227 void addConstantValue(DIE *Die, const ConstantInt *CI, bool Unsigned);
228 void addConstantValue(DIE *Die, const APInt &Val, bool Unsigned);
230 /// addConstantFPValue - Add constant value entry in variable DIE.
231 void addConstantFPValue(DIE *Die, const MachineOperand &MO);
232 void addConstantFPValue(DIE *Die, const ConstantFP *CFP);
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(const DbgVariable &DV, DIE *Die, uint16_t 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(const DbgVariable &DV, DIE *Die, uint16_t Attribute,
259 const MachineLocation &Location);
261 /// addVariableAddress - Add DW_AT_location attribute for a
262 /// DbgVariable based on provided MachineLocation.
263 void addVariableAddress(const DbgVariable &DV, DIE *Die,
264 MachineLocation Location);
266 /// addToContextOwner - Add Die into the list of its context owner's children.
267 void addToContextOwner(DIE *Die, DIScope Context);
269 /// addType - Add a new type attribute to the specified entity. This takes
270 /// and attribute parameter because DW_AT_friend attributes are also
272 void addType(DIE *Entity, DIType Ty, uint16_t Attribute = dwarf::DW_AT_type);
274 /// getOrCreateNameSpace - Create a DIE for DINameSpace.
275 DIE *getOrCreateNameSpace(DINameSpace NS);
277 /// getOrCreateSubprogramDIE - Create new DIE using SP.
278 DIE *getOrCreateSubprogramDIE(DISubprogram SP);
280 /// getOrCreateTypeDIE - Find existing DIE or create new DIE for the
282 DIE *getOrCreateTypeDIE(const MDNode *N);
284 /// getOrCreateTemplateTypeParameterDIE - Find existing DIE or create new DIE
285 /// for the given DITemplateTypeParameter.
286 DIE *getOrCreateTemplateTypeParameterDIE(DITemplateTypeParameter TP);
288 /// getOrCreateTemplateValueParameterDIE - Find existing DIE or create
289 /// new DIE for the given DITemplateValueParameter.
290 DIE *getOrCreateTemplateValueParameterDIE(DITemplateValueParameter TVP);
292 /// getOrCreateContextDIE - Get context owner's DIE.
293 DIE *getOrCreateContextDIE(DIScope Context);
295 /// createGlobalVariableDIE - create global variable DIE.
296 void createGlobalVariableDIE(const MDNode *N);
298 /// constructContainingTypeDIEs - Construct DIEs for types that contain
300 void constructContainingTypeDIEs();
302 /// constructVariableDIE - Construct a DIE for the given DbgVariable.
303 DIE *constructVariableDIE(DbgVariable *DV, bool isScopeAbstract);
306 /// constructTypeDIE - Construct basic type die from DIBasicType.
307 void constructTypeDIE(DIE &Buffer, DIBasicType BTy);
309 /// constructTypeDIE - Construct derived type die from DIDerivedType.
310 void constructTypeDIE(DIE &Buffer, DIDerivedType DTy);
312 /// constructTypeDIE - Construct type DIE from DICompositeType.
313 void constructTypeDIE(DIE &Buffer, DICompositeType CTy);
315 /// constructSubrangeDIE - Construct subrange DIE from DISubrange.
316 void constructSubrangeDIE(DIE &Buffer, DISubrange SR, DIE *IndexTy);
318 /// constructArrayTypeDIE - Construct array type DIE from DICompositeType.
319 void constructArrayTypeDIE(DIE &Buffer, DICompositeType *CTy);
321 /// constructEnumTypeDIE - Construct enum type DIE from DIEnumerator.
322 DIE *constructEnumTypeDIE(DIEnumerator ETy);
324 /// createMemberDIE - Create new member DIE.
325 DIE *createMemberDIE(DIDerivedType DT);
327 /// createStaticMemberDIE - Create new static data member DIE.
328 DIE *createStaticMemberDIE(DIDerivedType DT);
330 /// getLowerBoundDefault - Return the default lower bound for an array. If the
331 /// DWARF version doesn't handle the language, return -1.
332 int64_t getDefaultLowerBound() const;
334 /// getDIEEntry - Returns the debug information entry for the specified
336 DIEEntry *getDIEEntry(const MDNode *N) const {
337 return MDNodeToDIEEntryMap.lookup(N);
340 /// insertDIEEntry - Insert debug information entry into the map.
341 void insertDIEEntry(const MDNode *N, DIEEntry *E) {
342 MDNodeToDIEEntryMap.insert(std::make_pair(N, E));
345 // getIndexTyDie - Get an anonymous type for index type.
346 DIE *getIndexTyDie() { return IndexTyDie; }
348 // setIndexTyDie - Set D as anonymous type for index which can be reused
350 void setIndexTyDie(DIE *D) { IndexTyDie = D; }
352 /// createDIEEntry - Creates a new DIEEntry to be a proxy for a debug
353 /// information entry.
354 DIEEntry *createDIEEntry(DIE *Entry);
358 // DIEValueAllocator - All DIEValues are allocated through this allocator.
359 BumpPtrAllocator DIEValueAllocator;
360 DIEInteger *DIEIntegerOne;
363 } // end llvm namespace