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;
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;
98 CompileUnit(unsigned UID, DIE *D, const MDNode *N, AsmPrinter *A,
99 DwarfDebug *DW, DwarfUnits *DWU);
103 unsigned getUniqueID() const { return UniqueID; }
104 uint16_t getLanguage() const { return DICompileUnit(Node).getLanguage(); }
105 const MDNode *getNode() const { return Node; }
106 DIE *getCUDie() const { return CUDie.get(); }
107 unsigned getDebugInfoOffset() const { return DebugInfoOffset; }
108 const StringMap<DIE *> &getGlobalNames() const { return GlobalNames; }
109 const StringMap<DIE *> &getGlobalTypes() const { return GlobalTypes; }
111 const StringMap<std::vector<DIE *> > &getAccelNames() const {
114 const StringMap<std::vector<DIE *> > &getAccelObjC() const {
117 const StringMap<std::vector<DIE *> > &getAccelNamespace() const {
118 return AccelNamespace;
120 const StringMap<std::vector<std::pair<DIE *, unsigned> > > &
121 getAccelTypes() const {
125 void setDebugInfoOffset(unsigned DbgInfoOff) { DebugInfoOffset = DbgInfoOff; }
126 /// hasContent - Return true if this compile unit has something to write out.
128 bool hasContent() const { return !CUDie->getChildren().empty(); }
130 /// addGlobalName - Add a new global entity to the compile unit.
132 void addGlobalName(StringRef Name, DIE *Die);
134 /// addGlobalType - Add a new global type to the compile unit.
136 void addGlobalType(DIType Ty);
138 /// addAccelName - Add a new name to the name accelerator table.
139 void addAccelName(StringRef Name, DIE *Die) {
140 std::vector<DIE*> &DIEs = AccelNames[Name];
143 void addAccelObjC(StringRef Name, DIE *Die) {
144 std::vector<DIE*> &DIEs = AccelObjC[Name];
147 void addAccelNamespace(StringRef Name, DIE *Die) {
148 std::vector<DIE*> &DIEs = AccelNamespace[Name];
151 void addAccelType(StringRef Name, std::pair<DIE *, unsigned> Die) {
152 std::vector<std::pair<DIE *, unsigned> > &DIEs = AccelTypes[Name];
156 /// getDIE - Returns the debug information entry map slot for the
157 /// specified debug variable.
158 DIE *getDIE(const MDNode *N) const { return MDNodeToDieMap.lookup(N); }
160 DIEBlock *getDIEBlock() {
161 return new (DIEValueAllocator) DIEBlock();
164 /// insertDIE - Insert DIE into the map.
165 void insertDIE(const MDNode *N, DIE *D) {
166 MDNodeToDieMap.insert(std::make_pair(N, D));
169 /// getDIEEntry - Returns the debug information entry for the specified
171 DIEEntry *getDIEEntry(const MDNode *N) const {
172 return MDNodeToDIEEntryMap.lookup(N);
175 /// insertDIEEntry - Insert debug information entry into the map.
176 void insertDIEEntry(const MDNode *N, DIEEntry *E) {
177 MDNodeToDIEEntryMap.insert(std::make_pair(N, E));
180 /// addDie - Adds or interns the DIE to the compile unit.
182 void addDie(DIE *Buffer) {
183 this->CUDie->addChild(Buffer);
186 // getIndexTyDie - Get an anonymous type for index type.
187 DIE *getIndexTyDie() {
191 // setIndexTyDie - Set D as anonymous type for index which can be reused
193 void setIndexTyDie(DIE *D) {
197 /// addFlag - Add a flag that is true to the DIE.
198 void addFlag(DIE *Die, uint16_t Attribute);
200 /// addUInt - Add an unsigned integer attribute data and value.
202 void addUInt(DIE *Die, uint16_t Attribute, uint16_t Form, uint64_t Integer);
204 /// addSInt - Add an signed integer attribute data and value.
206 void addSInt(DIE *Die, uint16_t Attribute, uint16_t Form, int64_t Integer);
208 /// addString - Add a string attribute data and value.
210 void addString(DIE *Die, uint16_t Attribute, const StringRef Str);
212 /// addLocalString - Add a string attribute data and value.
214 void addLocalString(DIE *Die, uint16_t Attribute, const StringRef Str);
216 /// addExpr - Add a Dwarf expression attribute data and value.
218 void addExpr(DIE *Die, uint16_t Attribute, uint16_t Form,
221 /// addLabel - Add a Dwarf label attribute data and value.
223 void addLabel(DIE *Die, uint16_t Attribute, uint16_t Form,
224 const MCSymbol *Label);
226 /// addLabelAddress - Add a dwarf label attribute data and value using
227 /// either DW_FORM_addr or DW_FORM_GNU_addr_index.
229 void addLabelAddress(DIE *Die, uint16_t Attribute, MCSymbol *Label);
231 /// addOpAddress - Add a dwarf op address data and value using the
232 /// form given and an op of either DW_FORM_addr or DW_FORM_GNU_addr_index.
234 void addOpAddress(DIE *Die, const MCSymbol *Label);
235 void addOpAddress(DIE *Die, const MCSymbolRefExpr *Label);
237 /// addDelta - Add a label delta attribute data and value.
239 void addDelta(DIE *Die, uint16_t Attribute, uint16_t Form,
240 const MCSymbol *Hi, const MCSymbol *Lo);
242 /// addDIEEntry - Add a DIE attribute data and value.
244 void addDIEEntry(DIE *Die, uint16_t Attribute, uint16_t Form, DIE *Entry);
246 /// addBlock - Add block data.
248 void addBlock(DIE *Die, uint16_t Attribute, uint16_t Form, DIEBlock *Block);
250 /// addSourceLine - Add location information to specified debug information
252 void addSourceLine(DIE *Die, DIVariable V);
253 void addSourceLine(DIE *Die, DIGlobalVariable G);
254 void addSourceLine(DIE *Die, DISubprogram SP);
255 void addSourceLine(DIE *Die, DIType Ty);
256 void addSourceLine(DIE *Die, DINameSpace NS);
257 void addSourceLine(DIE *Die, DIObjCProperty Ty);
259 /// addAddress - Add an address attribute to a die based on the location
261 void addAddress(DIE *Die, uint16_t Attribute,
262 const MachineLocation &Location, bool Indirect = false);
264 /// addConstantValue - Add constant value entry in variable DIE.
265 void addConstantValue(DIE *Die, const MachineOperand &MO, DIType Ty);
266 void addConstantValue(DIE *Die, const ConstantInt *CI, bool Unsigned);
267 void addConstantValue(DIE *Die, const APInt &Val, bool Unsigned);
269 /// addConstantFPValue - Add constant value entry in variable DIE.
270 void addConstantFPValue(DIE *Die, const MachineOperand &MO);
271 void addConstantFPValue(DIE *Die, const ConstantFP *CFP);
273 /// addTemplateParams - Add template parameters in buffer.
274 void addTemplateParams(DIE &Buffer, DIArray TParams);
276 /// addRegisterOp - Add register operand.
277 void addRegisterOp(DIE *TheDie, unsigned Reg);
279 /// addRegisterOffset - Add register offset.
280 void addRegisterOffset(DIE *TheDie, unsigned Reg, int64_t Offset);
282 /// addComplexAddress - Start with the address based on the location provided,
283 /// and generate the DWARF information necessary to find the actual variable
284 /// (navigating the extra location information encoded in the type) based on
285 /// the starting location. Add the DWARF information to the die.
287 void addComplexAddress(const DbgVariable &DV, DIE *Die, uint16_t Attribute,
288 const MachineLocation &Location);
290 // FIXME: Should be reformulated in terms of addComplexAddress.
291 /// addBlockByrefAddress - Start with the address based on the location
292 /// provided, and generate the DWARF information necessary to find the
293 /// actual Block variable (navigating the Block struct) based on the
294 /// starting location. Add the DWARF information to the die. Obsolete,
295 /// please use addComplexAddress instead.
297 void addBlockByrefAddress(const DbgVariable &DV, DIE *Die, uint16_t Attribute,
298 const MachineLocation &Location);
300 /// addVariableAddress - Add DW_AT_location attribute for a
301 /// DbgVariable based on provided MachineLocation.
302 void addVariableAddress(const DbgVariable &DV, DIE *Die,
303 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, uint16_t 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);
375 /// getOrCreateContextDIE - Get context owner's DIE.
376 DIE *getOrCreateContextDIE(DIDescriptor Context);
380 // DIEValueAllocator - All DIEValues are allocated through this allocator.
381 BumpPtrAllocator DIEValueAllocator;
382 DIEInteger *DIEIntegerOne;
385 } // end llvm namespace