Daniel Dunbar | c17a4d3 | 2008-08-11 02:45:11 +0000 | [diff] [blame] | 1 | //===------- CGObjCMac.cpp - Interface to Apple Objective-C Runtime -------===// |
| 2 | // |
| 3 | // The LLVM Compiler Infrastructure |
| 4 | // |
| 5 | // This file is distributed under the University of Illinois Open Source |
| 6 | // License. See LICENSE.TXT for details. |
| 7 | // |
| 8 | //===----------------------------------------------------------------------===// |
| 9 | // |
| 10 | // This provides Objective-C code generation targetting the Apple runtime. |
| 11 | // |
| 12 | //===----------------------------------------------------------------------===// |
| 13 | |
| 14 | #include "CGObjCRuntime.h" |
Daniel Dunbar | f77ac86 | 2008-08-11 21:35:06 +0000 | [diff] [blame] | 15 | |
| 16 | #include "CodeGenModule.h" |
Daniel Dunbar | b7ec246 | 2008-08-16 03:19:19 +0000 | [diff] [blame] | 17 | #include "CodeGenFunction.h" |
Daniel Dunbar | bbce49b | 2008-08-12 00:12:39 +0000 | [diff] [blame] | 18 | #include "clang/AST/ASTContext.h" |
Daniel Dunbar | e91593e | 2008-08-11 04:54:23 +0000 | [diff] [blame] | 19 | #include "clang/AST/Decl.h" |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 20 | #include "clang/AST/DeclObjC.h" |
Daniel Dunbar | f77ac86 | 2008-08-11 21:35:06 +0000 | [diff] [blame] | 21 | #include "clang/Basic/LangOptions.h" |
| 22 | |
Daniel Dunbar | bbce49b | 2008-08-12 00:12:39 +0000 | [diff] [blame] | 23 | #include "llvm/Module.h" |
Daniel Dunbar | c17a4d3 | 2008-08-11 02:45:11 +0000 | [diff] [blame] | 24 | #include "llvm/Support/IRBuilder.h" |
Daniel Dunbar | 4e2d7d0 | 2008-08-12 06:48:42 +0000 | [diff] [blame] | 25 | #include "llvm/Target/TargetData.h" |
Daniel Dunbar | b7ec246 | 2008-08-16 03:19:19 +0000 | [diff] [blame] | 26 | #include <sstream> |
Daniel Dunbar | c17a4d3 | 2008-08-11 02:45:11 +0000 | [diff] [blame] | 27 | |
| 28 | using namespace clang; |
| 29 | |
| 30 | namespace { |
Daniel Dunbar | bbce49b | 2008-08-12 00:12:39 +0000 | [diff] [blame] | 31 | |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 32 | // FIXME: We should find a nicer way to make the labels for |
| 33 | // metadata, string concatenation is lame. |
| 34 | |
Daniel Dunbar | bbce49b | 2008-08-12 00:12:39 +0000 | [diff] [blame] | 35 | /// ObjCTypesHelper - Helper class that encapsulates lazy |
| 36 | /// construction of varies types used during ObjC generation. |
| 37 | class ObjCTypesHelper { |
| 38 | private: |
| 39 | CodeGen::CodeGenModule &CGM; |
| 40 | |
| 41 | const llvm::StructType *CFStringType; |
| 42 | llvm::Constant *CFConstantStringClassReference; |
Daniel Dunbar | 259d93d | 2008-08-12 03:39:23 +0000 | [diff] [blame] | 43 | llvm::Function *MessageSendFn; |
| 44 | |
Daniel Dunbar | bbce49b | 2008-08-12 00:12:39 +0000 | [diff] [blame] | 45 | public: |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame^] | 46 | const llvm::Type *ShortTy, *IntTy, *LongTy; |
| 47 | const llvm::Type *Int8PtrTy; |
Daniel Dunbar | 259d93d | 2008-08-12 03:39:23 +0000 | [diff] [blame] | 48 | |
Daniel Dunbar | 2bedbf8 | 2008-08-12 05:28:47 +0000 | [diff] [blame] | 49 | /// ObjectPtrTy - LLVM type for object handles (typeof(id)) |
| 50 | const llvm::Type *ObjectPtrTy; |
Daniel Dunbar | 4e2d7d0 | 2008-08-12 06:48:42 +0000 | [diff] [blame] | 51 | /// SelectorPtrTy - LLVM type for selector handles (typeof(SEL)) |
Daniel Dunbar | 2bedbf8 | 2008-08-12 05:28:47 +0000 | [diff] [blame] | 52 | const llvm::Type *SelectorPtrTy; |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 53 | /// ProtocolPtrTy - LLVM type for external protocol handles |
| 54 | /// (typeof(Protocol)) |
| 55 | const llvm::Type *ExternalProtocolPtrTy; |
Daniel Dunbar | 4e2d7d0 | 2008-08-12 06:48:42 +0000 | [diff] [blame] | 56 | |
| 57 | /// SymtabTy - LLVM type for struct objc_symtab. |
| 58 | const llvm::StructType *SymtabTy; |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame^] | 59 | /// SymtabPtrTy - LLVM type for struct objc_symtab *. |
| 60 | const llvm::Type *SymtabPtrTy; |
Daniel Dunbar | 4e2d7d0 | 2008-08-12 06:48:42 +0000 | [diff] [blame] | 61 | /// ModuleTy - LLVM type for struct objc_module. |
| 62 | const llvm::StructType *ModuleTy; |
Daniel Dunbar | 259d93d | 2008-08-12 03:39:23 +0000 | [diff] [blame] | 63 | |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 64 | /// ProtocolTy - LLVM type for struct objc_protocol. |
| 65 | const llvm::StructType *ProtocolTy; |
| 66 | /// ProtocolPtrTy - LLVM type for struct objc_protocol *. |
| 67 | const llvm::Type *ProtocolPtrTy; |
| 68 | /// ProtocolExtensionTy - LLVM type for struct |
| 69 | /// objc_protocol_extension. |
| 70 | const llvm::StructType *ProtocolExtensionTy; |
| 71 | /// ProtocolExtensionTy - LLVM type for struct |
| 72 | /// objc_protocol_extension *. |
| 73 | const llvm::Type *ProtocolExtensionPtrTy; |
| 74 | /// MethodDescriptionTy - LLVM type for struct |
| 75 | /// objc_method_description. |
| 76 | const llvm::StructType *MethodDescriptionTy; |
| 77 | /// MethodDescriptionListTy - LLVM type for struct |
| 78 | /// objc_method_description_list. |
| 79 | const llvm::StructType *MethodDescriptionListTy; |
| 80 | /// MethodDescriptionListPtrTy - LLVM type for struct |
| 81 | /// objc_method_description_list *. |
| 82 | const llvm::Type *MethodDescriptionListPtrTy; |
| 83 | /// PropertyListTy - LLVM type for struct objc_property_list. |
| 84 | const llvm::Type *PropertyListTy; |
| 85 | /// PropertyListPtrTy - LLVM type for struct objc_property_list*. |
| 86 | const llvm::Type *PropertyListPtrTy; |
| 87 | /// ProtocolListTy - LLVM type for struct objc_property_list. |
| 88 | const llvm::Type *ProtocolListTy; |
| 89 | /// ProtocolListPtrTy - LLVM type for struct objc_property_list*. |
| 90 | const llvm::Type *ProtocolListPtrTy; |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame^] | 91 | /// ClassTy - LLVM type for struct objc_class. |
| 92 | const llvm::StructType *ClassTy; |
| 93 | /// ClassPtrTy - LLVM type for struct objc_class *. |
| 94 | const llvm::Type *ClassPtrTy; |
| 95 | /// ClassExtensionTy - LLVM type for struct objc_class_ext. |
| 96 | const llvm::StructType *ClassExtensionTy; |
| 97 | /// ClassExtensionPtrTy - LLVM type for struct objc_class_ext *. |
| 98 | const llvm::Type *ClassExtensionPtrTy; |
| 99 | /// CacheTy - LLVM type for struct objc_cache. |
| 100 | const llvm::Type *CacheTy; |
| 101 | /// CachePtrTy - LLVM type for struct objc_cache *. |
| 102 | const llvm::Type *CachePtrTy; |
| 103 | // IvarTy - LLVM type for struct objc_ivar. |
| 104 | const llvm::StructType *IvarTy; |
| 105 | /// IvarListTy - LLVM type for struct objc_ivar_list. |
| 106 | const llvm::Type *IvarListTy; |
| 107 | /// IvarListPtrTy - LLVM type for struct objc_ivar_list *. |
| 108 | const llvm::Type *IvarListPtrTy; |
| 109 | // MethodTy - LLVM type for struct objc_method. |
| 110 | const llvm::StructType *MethodTy; |
| 111 | /// MethodListTy - LLVM type for struct objc_method_list. |
| 112 | const llvm::Type *MethodListTy; |
| 113 | /// MethodListPtrTy - LLVM type for struct objc_method_list *. |
| 114 | const llvm::Type *MethodListPtrTy; |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 115 | |
Daniel Dunbar | bbce49b | 2008-08-12 00:12:39 +0000 | [diff] [blame] | 116 | public: |
| 117 | ObjCTypesHelper(CodeGen::CodeGenModule &cgm); |
| 118 | ~ObjCTypesHelper(); |
| 119 | |
| 120 | llvm::Constant *getCFConstantStringClassReference(); |
| 121 | const llvm::StructType *getCFStringType(); |
Daniel Dunbar | 259d93d | 2008-08-12 03:39:23 +0000 | [diff] [blame] | 122 | llvm::Function *getMessageSendFn(); |
Daniel Dunbar | bbce49b | 2008-08-12 00:12:39 +0000 | [diff] [blame] | 123 | }; |
| 124 | |
Daniel Dunbar | c17a4d3 | 2008-08-11 02:45:11 +0000 | [diff] [blame] | 125 | class CGObjCMac : public CodeGen::CGObjCRuntime { |
| 126 | private: |
Daniel Dunbar | bbce49b | 2008-08-12 00:12:39 +0000 | [diff] [blame] | 127 | CodeGen::CodeGenModule &CGM; |
| 128 | ObjCTypesHelper ObjCTypes; |
| 129 | /// ObjCABI - FIXME: Not sure yet. |
| 130 | unsigned ObjCABI; |
Daniel Dunbar | c17a4d3 | 2008-08-11 02:45:11 +0000 | [diff] [blame] | 131 | |
Daniel Dunbar | 4e2d7d0 | 2008-08-12 06:48:42 +0000 | [diff] [blame] | 132 | /// ClassNames - uniqued class names. |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 133 | llvm::DenseMap<IdentifierInfo*, llvm::GlobalVariable*> ClassNames; |
Daniel Dunbar | 4e2d7d0 | 2008-08-12 06:48:42 +0000 | [diff] [blame] | 134 | |
Daniel Dunbar | 259d93d | 2008-08-12 03:39:23 +0000 | [diff] [blame] | 135 | /// MethodVarNames - uniqued method variable names. |
| 136 | llvm::DenseMap<Selector, llvm::GlobalVariable*> MethodVarNames; |
| 137 | |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 138 | /// MethodVarTypes - uniqued method type signatures. We have to use |
| 139 | /// a StringMap here because have no other unique reference. |
| 140 | llvm::StringMap<llvm::GlobalVariable*> MethodVarTypes; |
| 141 | |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame^] | 142 | /// ClassReferences - uniqued class references. |
| 143 | llvm::DenseMap<IdentifierInfo*, llvm::GlobalVariable*> ClassReferences; |
| 144 | |
Daniel Dunbar | 259d93d | 2008-08-12 03:39:23 +0000 | [diff] [blame] | 145 | /// SelectorReferences - uniqued selector references. |
| 146 | llvm::DenseMap<Selector, llvm::GlobalVariable*> SelectorReferences; |
| 147 | |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 148 | /// Protocols - Protocols for which an objc_protocol structure has |
| 149 | /// been emitted. Forward declarations are handled by creating an |
| 150 | /// empty structure whose initializer is filled in when/if defined. |
| 151 | llvm::DenseMap<IdentifierInfo*, llvm::GlobalVariable*> Protocols; |
| 152 | |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame^] | 153 | /// DefinedClasses - List of defined classes. |
| 154 | std::vector<llvm::GlobalValue*> DefinedClasses; |
| 155 | |
| 156 | /// DefinedCategories - List of defined categories. |
| 157 | std::vector<llvm::GlobalValue*> DefinedCategories; |
| 158 | |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 159 | /// UsedGlobals - List of globals to pack into the llvm.used metadata |
Daniel Dunbar | f77ac86 | 2008-08-11 21:35:06 +0000 | [diff] [blame] | 160 | /// to prevent them from being clobbered. |
Daniel Dunbar | 4e2d7d0 | 2008-08-12 06:48:42 +0000 | [diff] [blame] | 161 | std::vector<llvm::GlobalVariable*> UsedGlobals; |
Daniel Dunbar | f77ac86 | 2008-08-11 21:35:06 +0000 | [diff] [blame] | 162 | |
| 163 | /// EmitImageInfo - Emit the image info marker used to encode some module |
| 164 | /// level information. |
| 165 | void EmitImageInfo(); |
| 166 | |
Daniel Dunbar | 4e2d7d0 | 2008-08-12 06:48:42 +0000 | [diff] [blame] | 167 | /// EmitModuleInfo - Another marker encoding module level |
| 168 | /// information. |
Daniel Dunbar | 4e2d7d0 | 2008-08-12 06:48:42 +0000 | [diff] [blame] | 169 | void EmitModuleInfo(); |
| 170 | |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame^] | 171 | /// EmitModuleSymols - Emit module symbols, the list of defined |
| 172 | /// classes and categories. The result has type SymtabPtrTy. |
Daniel Dunbar | 4e2d7d0 | 2008-08-12 06:48:42 +0000 | [diff] [blame] | 173 | llvm::Constant *EmitModuleSymbols(); |
| 174 | |
Daniel Dunbar | f77ac86 | 2008-08-11 21:35:06 +0000 | [diff] [blame] | 175 | /// FinishModule - Write out global data structures at the end of |
| 176 | /// processing a translation unit. |
| 177 | void FinishModule(); |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 178 | |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame^] | 179 | /// EmitClassExtension - Generate the class extension structure used |
| 180 | /// to store the weak ivar layout and properties. The return value |
| 181 | /// has type ClassExtensionPtrTy. |
| 182 | llvm::Constant *EmitClassExtension(const ObjCImplementationDecl *ID); |
| 183 | |
| 184 | /// EmitClassRef - Return a Value*, of type ObjCTypes.ClassPtrTy, |
| 185 | /// for the given class. |
| 186 | llvm::Value *EmitClassRef(llvm::IRBuilder<> &Builder, |
| 187 | const ObjCInterfaceDecl *ID); |
| 188 | |
| 189 | /// EmitIvarList - Emit the ivar list for the given |
| 190 | /// implementation. If ForClass is true the list of class ivars |
| 191 | /// (i.e. metaclass ivars) is emitted, otherwise the list of |
| 192 | /// interface ivars will be emitted. The return value has type |
| 193 | /// IvarListPtrTy. |
| 194 | llvm::Constant *EmitIvarList(const ObjCImplementationDecl *ID, |
| 195 | bool ForClass, |
| 196 | const llvm::Type *InterfaceTy); |
| 197 | |
| 198 | /// EmitMetaClass - Emit a class structure for the metaclass of the |
| 199 | /// given implementation. return value has type ClassPtrTy. |
| 200 | llvm::Constant *EmitMetaClass(const ObjCImplementationDecl *ID, |
| 201 | llvm::Constant *Protocols, |
| 202 | const llvm::Type *InterfaceTy); |
| 203 | |
| 204 | /// EmitMethodList - Emit the method list for the given |
| 205 | /// implementation. If ForClass is true the list of class methods |
| 206 | /// will be emitted, otherwise the list of instance methods will be |
| 207 | /// generated.The return value has type MethodListPtrTy. |
| 208 | llvm::Constant *EmitMethodList(const ObjCImplementationDecl *ID, |
| 209 | bool ForClass); |
| 210 | |
| 211 | /// EmitMethodDescList - Emit a method description list for a list of |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 212 | /// method declarations. |
| 213 | /// - TypeName: The name for the type containing the methods. |
| 214 | /// - IsProtocol: True iff these methods are for a protocol. |
| 215 | /// - ClassMethds: True iff these are class methods. |
| 216 | /// - Required: When true, only "required" methods are |
| 217 | /// listed. Similarly, when false only "optional" methods are |
| 218 | /// listed. For classes this should always be true. |
| 219 | /// - begin, end: The method list to output. |
| 220 | /// |
| 221 | /// The return value has type MethodDescriptionListPtrTy. |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame^] | 222 | llvm::Constant *EmitMethodDescList(const std::string &TypeName, |
| 223 | bool IsProtocol, |
| 224 | bool ClassMethods, |
| 225 | bool Required, |
| 226 | ObjCMethodDecl * const *begin, |
| 227 | ObjCMethodDecl * const *end); |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 228 | |
| 229 | /// EmitProtocolExtension - Generate the protocol extension |
| 230 | /// structure used to store optional instance and class methods, and |
| 231 | /// protocol properties. The return value has type |
| 232 | /// ProtocolExtensionPtrTy. |
| 233 | llvm::Constant *EmitProtocolExtension(const ObjCProtocolDecl *PD); |
| 234 | |
| 235 | /// EmitProtocolList - Generate the list of referenced |
| 236 | /// protocols. The return value has type ProtocolListPtrTy. |
| 237 | llvm::Constant *EmitProtocolList(const ObjCProtocolDecl *PD); |
| 238 | |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame^] | 239 | /// EmitSelector - Return a Value*, of type ObjCTypes.SelectorPtrTy, |
| 240 | /// for the given selector. |
| 241 | llvm::Value *EmitSelector(llvm::IRBuilder<> &Builder, Selector Sel); |
| 242 | |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 243 | /// GetProtocolRef - Return a reference to the internal protocol |
| 244 | /// description, creating an empty one if it has not been |
| 245 | /// defined. The return value has type pointer-to ProtocolTy. |
| 246 | llvm::GlobalVariable *GetProtocolRef(const ObjCProtocolDecl *PD); |
| 247 | |
Daniel Dunbar | 4e2d7d0 | 2008-08-12 06:48:42 +0000 | [diff] [blame] | 248 | /// GetClassName - Return a unique constant for the given selector's |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame^] | 249 | /// name. The return value has type char *. |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 250 | llvm::Constant *GetClassName(IdentifierInfo *Ident); |
Daniel Dunbar | 4e2d7d0 | 2008-08-12 06:48:42 +0000 | [diff] [blame] | 251 | |
Daniel Dunbar | 259d93d | 2008-08-12 03:39:23 +0000 | [diff] [blame] | 252 | /// GetMethodVarName - Return a unique constant for the given |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 253 | /// selector's name. This returns a constant i8* to the start of |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame^] | 254 | /// the name. The return value has type char *. |
Daniel Dunbar | 259d93d | 2008-08-12 03:39:23 +0000 | [diff] [blame] | 255 | llvm::Constant *GetMethodVarName(Selector Sel); |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame^] | 256 | llvm::Constant *GetMethodVarName(IdentifierInfo *); |
| 257 | llvm::Constant *GetMethodVarName(const std::string &Name); |
Daniel Dunbar | f77ac86 | 2008-08-11 21:35:06 +0000 | [diff] [blame] | 258 | |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 259 | /// GetMethodVarType - Return a unique constant for the given |
| 260 | /// selector's name. This returns a constant i8* to the start of |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame^] | 261 | /// the name. The return value has type char *. |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 262 | llvm::Constant *GetMethodVarType(ObjCMethodDecl *D); |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame^] | 263 | llvm::Constant *GetMethodVarType(const std::string &Name); |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 264 | |
Daniel Dunbar | b7ec246 | 2008-08-16 03:19:19 +0000 | [diff] [blame] | 265 | /// GetNameForMethod - Return a name for the given method. |
| 266 | /// \param[out] NameOut - The return value. |
| 267 | void GetNameForMethod(const ObjCMethodDecl *OMD, |
| 268 | std::string &NameOut); |
| 269 | |
Daniel Dunbar | c17a4d3 | 2008-08-11 02:45:11 +0000 | [diff] [blame] | 270 | public: |
| 271 | CGObjCMac(CodeGen::CodeGenModule &cgm); |
Daniel Dunbar | bbce49b | 2008-08-12 00:12:39 +0000 | [diff] [blame] | 272 | virtual llvm::Constant *GenerateConstantString(const std::string &String); |
Daniel Dunbar | c17a4d3 | 2008-08-11 02:45:11 +0000 | [diff] [blame] | 273 | |
| 274 | virtual llvm::Value *GenerateMessageSend(llvm::IRBuilder<> &Builder, |
| 275 | const llvm::Type *ReturnTy, |
Daniel Dunbar | c17a4d3 | 2008-08-11 02:45:11 +0000 | [diff] [blame] | 276 | llvm::Value *Receiver, |
| 277 | Selector Sel, |
| 278 | llvm::Value** ArgV, |
| 279 | unsigned ArgC); |
| 280 | |
Daniel Dunbar | ddb2a3d | 2008-08-16 00:25:02 +0000 | [diff] [blame] | 281 | virtual llvm::Value * |
| 282 | GenerateMessageSendSuper(llvm::IRBuilder<> &Builder, |
| 283 | const llvm::Type *ReturnTy, |
| 284 | const ObjCInterfaceDecl *SuperClass, |
| 285 | llvm::Value *Receiver, |
| 286 | Selector Sel, |
| 287 | llvm::Value** ArgV, |
| 288 | unsigned ArgC); |
| 289 | |
| 290 | virtual llvm::Value *GetClass(llvm::IRBuilder<> &Builder, |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame^] | 291 | const ObjCInterfaceDecl *ID); |
Daniel Dunbar | c17a4d3 | 2008-08-11 02:45:11 +0000 | [diff] [blame] | 292 | |
| 293 | virtual llvm::Value *GetSelector(llvm::IRBuilder<> &Builder, Selector Sel); |
| 294 | |
Daniel Dunbar | 7ded7f4 | 2008-08-15 22:20:32 +0000 | [diff] [blame] | 295 | virtual llvm::Function *GenerateMethod(const ObjCMethodDecl *OMD); |
Daniel Dunbar | c17a4d3 | 2008-08-11 02:45:11 +0000 | [diff] [blame] | 296 | |
Daniel Dunbar | 7ded7f4 | 2008-08-15 22:20:32 +0000 | [diff] [blame] | 297 | virtual void GenerateCategory(const ObjCCategoryImplDecl *CMD); |
Daniel Dunbar | c17a4d3 | 2008-08-11 02:45:11 +0000 | [diff] [blame] | 298 | |
Daniel Dunbar | 7ded7f4 | 2008-08-15 22:20:32 +0000 | [diff] [blame] | 299 | virtual void GenerateClass(const ObjCImplementationDecl *ClassDecl); |
Daniel Dunbar | c17a4d3 | 2008-08-11 02:45:11 +0000 | [diff] [blame] | 300 | |
| 301 | virtual llvm::Value *GenerateProtocolRef(llvm::IRBuilder<> &Builder, |
Daniel Dunbar | af2f62c | 2008-08-13 00:59:25 +0000 | [diff] [blame] | 302 | const ObjCProtocolDecl *PD); |
Daniel Dunbar | c17a4d3 | 2008-08-11 02:45:11 +0000 | [diff] [blame] | 303 | |
Daniel Dunbar | af2f62c | 2008-08-13 00:59:25 +0000 | [diff] [blame] | 304 | virtual void GenerateProtocol(const ObjCProtocolDecl *PD); |
Daniel Dunbar | c17a4d3 | 2008-08-11 02:45:11 +0000 | [diff] [blame] | 305 | |
| 306 | virtual llvm::Function *ModuleInitFunction(); |
| 307 | }; |
| 308 | } // end anonymous namespace |
Daniel Dunbar | bbce49b | 2008-08-12 00:12:39 +0000 | [diff] [blame] | 309 | |
| 310 | /* *** Helper Functions *** */ |
| 311 | |
| 312 | /// getConstantGEP() - Help routine to construct simple GEPs. |
| 313 | static llvm::Constant *getConstantGEP(llvm::Constant *C, |
| 314 | unsigned idx0, |
| 315 | unsigned idx1) { |
| 316 | llvm::Value *Idxs[] = { |
| 317 | llvm::ConstantInt::get(llvm::Type::Int32Ty, idx0), |
| 318 | llvm::ConstantInt::get(llvm::Type::Int32Ty, idx1) |
| 319 | }; |
| 320 | return llvm::ConstantExpr::getGetElementPtr(C, Idxs, 2); |
| 321 | } |
| 322 | |
| 323 | /* *** CGObjCMac Public Interface *** */ |
Daniel Dunbar | c17a4d3 | 2008-08-11 02:45:11 +0000 | [diff] [blame] | 324 | |
Daniel Dunbar | bbce49b | 2008-08-12 00:12:39 +0000 | [diff] [blame] | 325 | CGObjCMac::CGObjCMac(CodeGen::CodeGenModule &cgm) |
| 326 | : CGM(cgm), |
| 327 | ObjCTypes(cgm), |
| 328 | ObjCABI(1) |
| 329 | { |
| 330 | // FIXME: How does this get set in GCC? And what does it even mean? |
| 331 | if (ObjCTypes.LongTy != CGM.getTypes().ConvertType(CGM.getContext().IntTy)) |
| 332 | ObjCABI = 2; |
| 333 | |
| 334 | EmitImageInfo(); |
Daniel Dunbar | c17a4d3 | 2008-08-11 02:45:11 +0000 | [diff] [blame] | 335 | } |
| 336 | |
Daniel Dunbar | ddb2a3d | 2008-08-16 00:25:02 +0000 | [diff] [blame] | 337 | /// GetClass - Return a reference to the class for the given interface |
| 338 | /// decl. |
| 339 | llvm::Value *CGObjCMac::GetClass(llvm::IRBuilder<> &Builder, |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame^] | 340 | const ObjCInterfaceDecl *ID) { |
| 341 | return EmitClassRef(Builder, ID); |
Daniel Dunbar | c17a4d3 | 2008-08-11 02:45:11 +0000 | [diff] [blame] | 342 | } |
| 343 | |
| 344 | /// GetSelector - Return the pointer to the unique'd string for this selector. |
| 345 | llvm::Value *CGObjCMac::GetSelector(llvm::IRBuilder<> &Builder, Selector Sel) { |
Daniel Dunbar | 259d93d | 2008-08-12 03:39:23 +0000 | [diff] [blame] | 346 | return EmitSelector(Builder, Sel); |
Daniel Dunbar | c17a4d3 | 2008-08-11 02:45:11 +0000 | [diff] [blame] | 347 | } |
| 348 | |
Daniel Dunbar | bbce49b | 2008-08-12 00:12:39 +0000 | [diff] [blame] | 349 | /// Generate a constant CFString object. |
| 350 | /* |
| 351 | struct __builtin_CFString { |
| 352 | const int *isa; // point to __CFConstantStringClassReference |
| 353 | int flags; |
| 354 | const char *str; |
| 355 | long length; |
| 356 | }; |
| 357 | */ |
| 358 | |
| 359 | llvm::Constant *CGObjCMac::GenerateConstantString(const std::string &String) { |
| 360 | // FIXME: I have no idea what this constant is (it is a magic |
| 361 | // constant in GCC as well). Most likely the encoding of the string |
| 362 | // and at least one part of it relates to UTF-16. Is this just the |
| 363 | // code for UTF-8? Where is this handled for us? |
| 364 | // See: <rdr://2996215> |
| 365 | unsigned flags = 0x07c8; |
| 366 | |
| 367 | // FIXME: Use some machinery to unique this. We can't reuse the CGM |
| 368 | // one since we put them in a different section. |
| 369 | llvm::Constant *StringC = llvm::ConstantArray::get(String); |
| 370 | llvm::Constant *StringGV = |
| 371 | new llvm::GlobalVariable(StringC->getType(), true, |
| 372 | llvm::GlobalValue::InternalLinkage, |
| 373 | StringC, ".str", &CGM.getModule()); |
| 374 | llvm::Constant *Values[4] = { |
| 375 | ObjCTypes.getCFConstantStringClassReference(), |
| 376 | llvm::ConstantInt::get(llvm::Type::Int32Ty, flags), |
| 377 | getConstantGEP(StringGV, 0, 0), // Decay array -> ptr |
| 378 | llvm::ConstantInt::get(ObjCTypes.LongTy, String.size()) |
| 379 | }; |
| 380 | |
| 381 | llvm::Constant *CFStringC = |
| 382 | llvm::ConstantStruct::get(ObjCTypes.getCFStringType(), |
| 383 | std::vector<llvm::Constant*>(Values, Values+4)); |
| 384 | |
| 385 | llvm::GlobalVariable *CFStringGV = |
| 386 | new llvm::GlobalVariable(CFStringC->getType(), true, |
| 387 | llvm::GlobalValue::InternalLinkage, |
| 388 | CFStringC, "", |
| 389 | &CGM.getModule()); |
| 390 | |
| 391 | CFStringGV->setSection("__DATA, __cfstring"); |
| 392 | |
| 393 | return CFStringGV; |
Daniel Dunbar | c17a4d3 | 2008-08-11 02:45:11 +0000 | [diff] [blame] | 394 | } |
| 395 | |
| 396 | /// Generates a message send where the super is the receiver. This is |
| 397 | /// a message send to self with special delivery semantics indicating |
| 398 | /// which class's method should be called. |
Daniel Dunbar | ddb2a3d | 2008-08-16 00:25:02 +0000 | [diff] [blame] | 399 | llvm::Value * |
| 400 | CGObjCMac::GenerateMessageSendSuper(llvm::IRBuilder<> &Builder, |
| 401 | const llvm::Type *ReturnTy, |
| 402 | const ObjCInterfaceDecl *SuperClass, |
| 403 | llvm::Value *Receiver, |
| 404 | Selector Sel, |
| 405 | llvm::Value** ArgV, |
| 406 | unsigned ArgC) { |
Daniel Dunbar | c17a4d3 | 2008-08-11 02:45:11 +0000 | [diff] [blame] | 407 | assert(0 && "Cannot generate message send to super for Mac runtime."); |
| 408 | return 0; |
| 409 | } |
| 410 | |
| 411 | /// Generate code for a message send expression. |
| 412 | llvm::Value *CGObjCMac::GenerateMessageSend(llvm::IRBuilder<> &Builder, |
| 413 | const llvm::Type *ReturnTy, |
Daniel Dunbar | c17a4d3 | 2008-08-11 02:45:11 +0000 | [diff] [blame] | 414 | llvm::Value *Receiver, |
| 415 | Selector Sel, |
| 416 | llvm::Value** ArgV, |
Daniel Dunbar | 2bedbf8 | 2008-08-12 05:28:47 +0000 | [diff] [blame] | 417 | unsigned ArgC) { |
| 418 | llvm::Function *F = ObjCTypes.getMessageSendFn(); |
| 419 | llvm::Value **Args = new llvm::Value*[ArgC+2]; |
| 420 | Args[0] = Builder.CreateBitCast(Receiver, ObjCTypes.ObjectPtrTy, "tmp"); |
| 421 | Args[1] = EmitSelector(Builder, Sel); |
| 422 | std::copy(ArgV, ArgV+ArgC, Args+2); |
Daniel Dunbar | 7ded7f4 | 2008-08-15 22:20:32 +0000 | [diff] [blame] | 423 | |
| 424 | std::vector<const llvm::Type*> Params; |
| 425 | Params.push_back(ObjCTypes.ObjectPtrTy); |
| 426 | Params.push_back(ObjCTypes.SelectorPtrTy); |
| 427 | llvm::FunctionType *CallFTy = llvm::FunctionType::get(ReturnTy, |
| 428 | Params, |
| 429 | true); |
| 430 | llvm::Type *PCallFTy = llvm::PointerType::getUnqual(CallFTy); |
| 431 | llvm::Constant *C = llvm::ConstantExpr::getBitCast(F, PCallFTy); |
| 432 | llvm::CallInst *CI = Builder.CreateCall(C, |
| 433 | Args, Args+ArgC+2, "tmp"); |
Daniel Dunbar | 2bedbf8 | 2008-08-12 05:28:47 +0000 | [diff] [blame] | 434 | delete[] Args; |
| 435 | return Builder.CreateBitCast(CI, ReturnTy, "tmp"); |
Daniel Dunbar | c17a4d3 | 2008-08-11 02:45:11 +0000 | [diff] [blame] | 436 | } |
| 437 | |
| 438 | llvm::Value *CGObjCMac::GenerateProtocolRef(llvm::IRBuilder<> &Builder, |
Daniel Dunbar | af2f62c | 2008-08-13 00:59:25 +0000 | [diff] [blame] | 439 | const ObjCProtocolDecl *PD) { |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 440 | return llvm::ConstantExpr::getBitCast(GetProtocolRef(PD), |
| 441 | ObjCTypes.ExternalProtocolPtrTy); |
Daniel Dunbar | c17a4d3 | 2008-08-11 02:45:11 +0000 | [diff] [blame] | 442 | } |
| 443 | |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 444 | /* |
| 445 | // APPLE LOCAL radar 4585769 - Objective-C 1.0 extensions |
| 446 | struct _objc_protocol { |
| 447 | struct _objc_protocol_extension *isa; |
| 448 | char *protocol_name; |
| 449 | struct _objc_protocol_list *protocol_list; |
| 450 | struct _objc__method_prototype_list *instance_methods; |
| 451 | struct _objc__method_prototype_list *class_methods |
| 452 | }; |
| 453 | |
| 454 | See EmitProtocolExtension(). |
| 455 | */ |
| 456 | void CGObjCMac::GenerateProtocol(const ObjCProtocolDecl *PD) { |
| 457 | const char *ProtocolName = PD->getName(); |
| 458 | |
| 459 | std::vector<llvm::Constant*> Values(5); |
| 460 | Values[0] = EmitProtocolExtension(PD); |
| 461 | Values[1] = GetClassName(PD->getIdentifier()); |
| 462 | Values[2] = EmitProtocolList(PD); |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame^] | 463 | Values[3] = EmitMethodDescList(ProtocolName, |
| 464 | true, // IsProtocol |
| 465 | false, // ClassMethods |
| 466 | true, // Required |
| 467 | PD->instmeth_begin(), |
| 468 | PD->instmeth_end()); |
| 469 | Values[4] = EmitMethodDescList(ProtocolName, |
| 470 | true, // IsProtocol |
| 471 | true, // ClassMethods |
| 472 | true, // Required |
| 473 | PD->classmeth_begin(), |
| 474 | PD->classmeth_end()); |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 475 | llvm::Constant *Init = llvm::ConstantStruct::get(ObjCTypes.ProtocolTy, |
| 476 | Values); |
| 477 | |
| 478 | llvm::GlobalVariable *&Entry = Protocols[PD->getIdentifier()]; |
| 479 | if (Entry) { |
| 480 | // Already created, just update the initializer |
| 481 | Entry->setInitializer(Init); |
| 482 | } else { |
| 483 | Entry = |
| 484 | new llvm::GlobalVariable(ObjCTypes.ProtocolTy, false, |
| 485 | llvm::GlobalValue::InternalLinkage, |
| 486 | Init, |
| 487 | std::string("\01L_OBJC_PROTOCOL_")+ProtocolName, |
| 488 | &CGM.getModule()); |
| 489 | Entry->setSection("__OBJC,__protocol,regular,no_dead_strip"); |
| 490 | UsedGlobals.push_back(Entry); |
| 491 | // FIXME: Is this necessary? Why only for protocol? |
| 492 | Entry->setAlignment(4); |
| 493 | } |
| 494 | } |
| 495 | |
| 496 | llvm::GlobalVariable *CGObjCMac::GetProtocolRef(const ObjCProtocolDecl *PD) { |
| 497 | llvm::GlobalVariable *&Entry = Protocols[PD->getIdentifier()]; |
| 498 | |
| 499 | if (!Entry) { |
| 500 | std::vector<llvm::Constant*> Values(5); |
| 501 | Values[0] = llvm::Constant::getNullValue(ObjCTypes.ProtocolExtensionPtrTy); |
| 502 | Values[1] = GetClassName(PD->getIdentifier()); |
| 503 | Values[2] = llvm::Constant::getNullValue(ObjCTypes.ProtocolListPtrTy); |
| 504 | Values[3] = Values[4] = |
| 505 | llvm::Constant::getNullValue(ObjCTypes.MethodDescriptionListPtrTy); |
| 506 | llvm::Constant *Init = llvm::ConstantStruct::get(ObjCTypes.ProtocolTy, |
| 507 | Values); |
| 508 | |
| 509 | Entry = |
| 510 | new llvm::GlobalVariable(ObjCTypes.ProtocolTy, false, |
| 511 | llvm::GlobalValue::InternalLinkage, |
| 512 | Init, |
| 513 | std::string("\01L_OBJC_PROTOCOL_")+PD->getName(), |
| 514 | &CGM.getModule()); |
| 515 | Entry->setSection("__OBJC,__protocol,regular,no_dead_strip"); |
| 516 | UsedGlobals.push_back(Entry); |
| 517 | // FIXME: Is this necessary? Why only for protocol? |
| 518 | Entry->setAlignment(4); |
| 519 | } |
| 520 | |
| 521 | return Entry; |
| 522 | } |
| 523 | |
| 524 | /* |
| 525 | struct _objc_protocol_extension { |
| 526 | uint32_t size; |
| 527 | struct objc_method_description_list *optional_instance_methods; |
| 528 | struct objc_method_description_list *optional_class_methods; |
| 529 | struct objc_property_list *instance_properties; |
| 530 | }; |
| 531 | */ |
| 532 | llvm::Constant *CGObjCMac::EmitProtocolExtension(const ObjCProtocolDecl *PD) { |
| 533 | uint64_t Size = |
| 534 | CGM.getTargetData().getABITypeSize(ObjCTypes.ProtocolExtensionTy); |
| 535 | std::vector<llvm::Constant*> Values(4); |
| 536 | Values[0] = llvm::ConstantInt::get(ObjCTypes.IntTy, Size); |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame^] | 537 | Values[1] = EmitMethodDescList(PD->getName(), |
| 538 | true, // IsProtocol |
| 539 | false, // ClassMethods |
| 540 | false, // Required |
| 541 | PD->instmeth_begin(), |
| 542 | PD->instmeth_end()); |
| 543 | Values[2] = EmitMethodDescList(PD->getName(), |
| 544 | true, // IsProtocol |
| 545 | true, // ClassMethods |
| 546 | false, // Required |
| 547 | PD->classmeth_begin(), |
| 548 | PD->classmeth_end()); |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 549 | Values[3] = llvm::Constant::getNullValue(ObjCTypes.PropertyListPtrTy); |
| 550 | assert(!PD->getNumPropertyDecl() && |
| 551 | "Cannot emit Obj-C protocol properties for NeXT runtime."); |
| 552 | |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame^] | 553 | // Return null if no extension bits are used. |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 554 | if (Values[1]->isNullValue() && Values[2]->isNullValue() && |
| 555 | Values[3]->isNullValue()) |
| 556 | return llvm::Constant::getNullValue(ObjCTypes.ProtocolExtensionPtrTy); |
| 557 | |
| 558 | llvm::Constant *Init = |
| 559 | llvm::ConstantStruct::get(ObjCTypes.ProtocolExtensionTy, Values); |
| 560 | llvm::GlobalVariable *GV = |
| 561 | new llvm::GlobalVariable(ObjCTypes.ProtocolExtensionTy, false, |
| 562 | llvm::GlobalValue::InternalLinkage, |
| 563 | Init, |
| 564 | (std::string("\01L_OBJC_PROTOCOLEXT_") + |
| 565 | PD->getName()), |
| 566 | &CGM.getModule()); |
| 567 | // No special section, but goes in llvm.used |
| 568 | UsedGlobals.push_back(GV); |
| 569 | |
| 570 | return GV; |
| 571 | } |
| 572 | |
| 573 | /* |
| 574 | struct objc_protocol_list { |
| 575 | struct objc_protocol_list *next; |
| 576 | long count; |
| 577 | Protocol *list[]; |
| 578 | }; |
| 579 | */ |
| 580 | llvm::Constant *CGObjCMac::EmitProtocolList(const ObjCProtocolDecl *PD) { |
| 581 | std::vector<llvm::Constant*> ProtocolRefs; |
| 582 | |
| 583 | for (ObjCProtocolDecl::protocol_iterator i = PD->protocol_begin(), |
| 584 | e = PD->protocol_end(); i != e; ++i) |
| 585 | ProtocolRefs.push_back(GetProtocolRef(*i)); |
| 586 | |
| 587 | // Just return null for empty protocol lists |
| 588 | if (ProtocolRefs.empty()) |
| 589 | return llvm::Constant::getNullValue(ObjCTypes.ProtocolListPtrTy); |
| 590 | |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame^] | 591 | // This list is null terminated. |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 592 | ProtocolRefs.push_back(llvm::Constant::getNullValue(ObjCTypes.ProtocolPtrTy)); |
| 593 | |
| 594 | std::vector<llvm::Constant*> Values(3); |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame^] | 595 | // This field is only used by the runtime. |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 596 | Values[0] = llvm::Constant::getNullValue(ObjCTypes.ProtocolListPtrTy); |
| 597 | Values[1] = llvm::ConstantInt::get(ObjCTypes.LongTy, ProtocolRefs.size() - 1); |
| 598 | Values[2] = |
| 599 | llvm::ConstantArray::get(llvm::ArrayType::get(ObjCTypes.ProtocolPtrTy, |
| 600 | ProtocolRefs.size()), |
| 601 | ProtocolRefs); |
| 602 | |
| 603 | llvm::Constant *Init = llvm::ConstantStruct::get(Values); |
| 604 | llvm::GlobalVariable *GV = |
| 605 | new llvm::GlobalVariable(Init->getType(), false, |
| 606 | llvm::GlobalValue::InternalLinkage, |
| 607 | Init, |
| 608 | (std::string("\01L_OBJC_PROTOCOL_REFS_") + |
| 609 | PD->getName()), |
| 610 | &CGM.getModule()); |
| 611 | GV->setSection("__OBJC,__cat_cls_meth,regular,no_dead_strip"); |
| 612 | return llvm::ConstantExpr::getBitCast(GV, ObjCTypes.ProtocolListPtrTy); |
| 613 | } |
| 614 | |
| 615 | /* |
| 616 | struct objc_method_description_list { |
| 617 | int count; |
| 618 | struct objc_method_description list[]; |
| 619 | }; |
| 620 | */ |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame^] | 621 | llvm::Constant *CGObjCMac::EmitMethodDescList(const std::string &TypeName, |
| 622 | bool IsProtocol, |
| 623 | bool ClassMethods, |
| 624 | bool Required, |
| 625 | ObjCMethodDecl * const *begin, |
| 626 | ObjCMethodDecl * const *end) { |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 627 | std::vector<llvm::Constant*> Methods, Desc(2); |
| 628 | for (; begin != end; ++begin) { |
| 629 | ObjCMethodDecl *D = *begin; |
| 630 | bool IsRequired = D->getImplementationControl() != ObjCMethodDecl::Optional; |
| 631 | |
| 632 | // Skip if this method is required and we are outputting optional |
| 633 | // methods, or vice versa. |
| 634 | if (Required != IsRequired) |
| 635 | continue; |
| 636 | |
| 637 | Desc[0] = llvm::ConstantExpr::getBitCast(GetMethodVarName(D->getSelector()), |
| 638 | ObjCTypes.SelectorPtrTy); |
| 639 | Desc[1] = GetMethodVarType(D); |
| 640 | Methods.push_back(llvm::ConstantStruct::get(ObjCTypes.MethodDescriptionTy, |
| 641 | Desc)); |
| 642 | } |
| 643 | |
| 644 | // Return null for empty list. |
| 645 | if (Methods.empty()) |
| 646 | return llvm::Constant::getNullValue(ObjCTypes.MethodDescriptionListPtrTy); |
| 647 | |
| 648 | std::vector<llvm::Constant*> Values(2); |
| 649 | Values[0] = llvm::ConstantInt::get(ObjCTypes.IntTy, Methods.size()); |
| 650 | llvm::ArrayType *AT = llvm::ArrayType::get(ObjCTypes.MethodDescriptionTy, |
| 651 | Methods.size()); |
| 652 | Values[1] = llvm::ConstantArray::get(AT, Methods); |
| 653 | llvm::Constant *Init = llvm::ConstantStruct::get(Values); |
| 654 | |
| 655 | char Prefix[256]; |
| 656 | sprintf(Prefix, "\01L_OBJC_%s%sMETHODS_%s", |
| 657 | IsProtocol ? "PROTOCOL_" : "", |
| 658 | ClassMethods ? "CLASS_" : "INSTANCE_", |
| 659 | !Required ? "OPT_" : ""); |
| 660 | llvm::GlobalVariable *GV = |
| 661 | new llvm::GlobalVariable(Init->getType(), false, |
| 662 | llvm::GlobalValue::InternalLinkage, |
| 663 | Init, |
| 664 | std::string(Prefix) + TypeName, |
| 665 | &CGM.getModule()); |
| 666 | if (ClassMethods) { |
| 667 | GV->setSection("__OBJC,__cat_cls_meth,regular,no_dead_strip"); |
| 668 | } else { |
| 669 | GV->setSection("__OBJC,__cat_inst_meth,regular,no_dead_strip"); |
| 670 | } |
| 671 | UsedGlobals.push_back(GV); |
| 672 | return llvm::ConstantExpr::getBitCast(GV, |
| 673 | ObjCTypes.MethodDescriptionListPtrTy); |
Daniel Dunbar | c17a4d3 | 2008-08-11 02:45:11 +0000 | [diff] [blame] | 674 | } |
| 675 | |
Daniel Dunbar | 7ded7f4 | 2008-08-15 22:20:32 +0000 | [diff] [blame] | 676 | void CGObjCMac::GenerateCategory(const ObjCCategoryImplDecl *OCD) { |
Daniel Dunbar | c17a4d3 | 2008-08-11 02:45:11 +0000 | [diff] [blame] | 677 | assert(0 && "Cannot generate category for Mac runtime."); |
| 678 | } |
| 679 | |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame^] | 680 | // FIXME: Get from somewhere? |
| 681 | enum ClassFlags { |
| 682 | eClassFlags_Factory = 0x00001, |
| 683 | eClassFlags_Meta = 0x00002, |
| 684 | // <rdr://5142207> |
| 685 | eClassFlags_HasCXXStructors = 0x02000, |
| 686 | eClassFlags_Hidden = 0x20000, |
| 687 | eClassFlags_ABI2_Hidden = 0x00010, |
| 688 | eClassFlags_ABI2_HasCXXStructors = 0x00004 // <rdr://4923634> |
| 689 | }; |
| 690 | |
| 691 | // <rdr://5142207&4705298&4843145> |
| 692 | static bool IsClassHidden(const ObjCInterfaceDecl *ID) { |
| 693 | if (const VisibilityAttr *attr = ID->getAttr<VisibilityAttr>()) { |
| 694 | // FIXME: Support -fvisibility |
| 695 | switch (attr->getVisibility()) { |
| 696 | default: |
| 697 | assert(0 && "Unknown visibility"); |
| 698 | return false; |
| 699 | case VisibilityAttr::DefaultVisibility: |
| 700 | case VisibilityAttr::ProtectedVisibility: // FIXME: What do we do here? |
| 701 | return false; |
| 702 | case VisibilityAttr::HiddenVisibility: |
| 703 | return true; |
| 704 | } |
| 705 | } else { |
| 706 | return false; // FIXME: Support -fvisibility |
| 707 | } |
| 708 | } |
| 709 | |
| 710 | /* |
| 711 | struct _objc_class { |
| 712 | Class isa; |
| 713 | Class super_class; |
| 714 | const char *name; |
| 715 | long version; |
| 716 | long info; |
| 717 | long instance_size; |
| 718 | struct _objc_ivar_list *ivars; |
| 719 | struct _objc_method_list *methods; |
| 720 | struct _objc_cache *cache; |
| 721 | struct _objc_protocol_list *protocols; |
| 722 | // Objective-C 1.0 extensions (<rdr://4585769>) |
| 723 | const char *ivar_layout; |
| 724 | struct _objc_class_ext *ext; |
| 725 | }; |
| 726 | |
| 727 | See EmitClassExtension(); |
| 728 | */ |
| 729 | void CGObjCMac::GenerateClass(const ObjCImplementationDecl *ID) { |
| 730 | const char *ClassName = ID->getName(); |
| 731 | // FIXME: Support protocols. |
| 732 | llvm::Constant *Protocols = |
| 733 | llvm::Constant::getNullValue(ObjCTypes.ProtocolListPtrTy); |
| 734 | // FIXME: Gross |
| 735 | ObjCInterfaceDecl *Interface = |
| 736 | const_cast<ObjCInterfaceDecl*>(ID->getClassInterface()); |
| 737 | const llvm::Type *InterfaceTy = |
| 738 | CGM.getTypes().ConvertType(CGM.getContext().getObjCInterfaceType(Interface)); |
| 739 | unsigned Flags = eClassFlags_Factory; |
| 740 | unsigned Size = CGM.getTargetData().getABITypeSize(InterfaceTy); |
| 741 | |
| 742 | // FIXME: Set CXX-structors flag. |
| 743 | if (IsClassHidden(ID->getClassInterface())) |
| 744 | Flags |= eClassFlags_Hidden; |
| 745 | |
| 746 | std::vector<llvm::Constant*> Values(12); |
| 747 | Values[ 0] = EmitMetaClass(ID, Protocols, InterfaceTy); |
| 748 | if (ObjCInterfaceDecl *Super = Interface->getSuperClass()) { |
| 749 | Values[ 1] = |
| 750 | llvm::ConstantExpr::getBitCast(GetClassName(Super->getIdentifier()), |
| 751 | ObjCTypes.ClassPtrTy); |
| 752 | } else { |
| 753 | Values[ 1] = llvm::Constant::getNullValue(ObjCTypes.ClassPtrTy); |
| 754 | } |
| 755 | Values[ 2] = GetClassName(ID->getIdentifier()); |
| 756 | // Version is always 0. |
| 757 | Values[ 3] = llvm::ConstantInt::get(ObjCTypes.LongTy, 0); |
| 758 | Values[ 4] = llvm::ConstantInt::get(ObjCTypes.LongTy, Flags); |
| 759 | Values[ 5] = llvm::ConstantInt::get(ObjCTypes.LongTy, Size); |
| 760 | Values[ 6] = EmitIvarList(ID, false, InterfaceTy); |
| 761 | Values[ 7] = EmitMethodList(ID, false); |
| 762 | // cache is always NULL. |
| 763 | Values[ 8] = llvm::Constant::getNullValue(ObjCTypes.CachePtrTy); |
| 764 | Values[ 9] = Protocols; |
| 765 | Values[10] = llvm::Constant::getNullValue(ObjCTypes.Int8PtrTy); // XXX |
| 766 | Values[11] = EmitClassExtension(ID); |
| 767 | llvm::Constant *Init = llvm::ConstantStruct::get(ObjCTypes.ClassTy, |
| 768 | Values); |
| 769 | |
| 770 | llvm::GlobalVariable *GV = |
| 771 | new llvm::GlobalVariable(ObjCTypes.ClassTy, false, |
| 772 | llvm::GlobalValue::InternalLinkage, |
| 773 | Init, |
| 774 | std::string("\01L_OBJC_CLASS_")+ClassName, |
| 775 | &CGM.getModule()); |
| 776 | GV->setSection("__OBJC,__class,regular,no_dead_strip"); |
| 777 | UsedGlobals.push_back(GV); |
| 778 | // FIXME: Why? |
| 779 | GV->setAlignment(32); |
| 780 | DefinedClasses.push_back(GV); |
| 781 | } |
| 782 | |
| 783 | llvm::Constant *CGObjCMac::EmitMetaClass(const ObjCImplementationDecl *ID, |
| 784 | llvm::Constant *Protocols, |
| 785 | const llvm::Type *InterfaceTy) { |
| 786 | const char *ClassName = ID->getName(); |
| 787 | unsigned Flags = eClassFlags_Meta; |
| 788 | unsigned Size = CGM.getTargetData().getABITypeSize(ObjCTypes.ClassTy); |
| 789 | |
| 790 | if (IsClassHidden(ID->getClassInterface())) |
| 791 | Flags |= eClassFlags_Hidden; |
| 792 | |
| 793 | std::vector<llvm::Constant*> Values(12); |
| 794 | // The isa for the metaclass is the root of the hierarchy. |
| 795 | const ObjCInterfaceDecl *Root = ID->getClassInterface(); |
| 796 | while (const ObjCInterfaceDecl *Super = Root->getSuperClass()) |
| 797 | Root = Super; |
| 798 | Values[ 0] = |
| 799 | llvm::ConstantExpr::getBitCast(GetClassName(Root->getIdentifier()), |
| 800 | ObjCTypes.ClassPtrTy); |
| 801 | // FIXME: Document fix-up here. |
| 802 | if (ObjCInterfaceDecl *Super = ID->getClassInterface()->getSuperClass()) { |
| 803 | Values[ 1] = |
| 804 | llvm::ConstantExpr::getBitCast(GetClassName(Super->getIdentifier()), |
| 805 | ObjCTypes.ClassPtrTy); |
| 806 | } else { |
| 807 | Values[ 1] = llvm::Constant::getNullValue(ObjCTypes.ClassPtrTy); |
| 808 | } |
| 809 | Values[ 2] = GetClassName(ID->getIdentifier()); |
| 810 | // Version is always 0. |
| 811 | Values[ 3] = llvm::ConstantInt::get(ObjCTypes.LongTy, 0); |
| 812 | Values[ 4] = llvm::ConstantInt::get(ObjCTypes.LongTy, Flags); |
| 813 | Values[ 5] = llvm::ConstantInt::get(ObjCTypes.LongTy, Size); |
| 814 | Values[ 6] = EmitIvarList(ID, true, InterfaceTy); |
| 815 | Values[ 7] = EmitMethodList(ID, true); |
| 816 | // cache is always NULL. |
| 817 | Values[ 8] = llvm::Constant::getNullValue(ObjCTypes.CachePtrTy); |
| 818 | Values[ 9] = Protocols; |
| 819 | // ivar_layout for metaclass is always NULL. |
| 820 | Values[10] = llvm::Constant::getNullValue(ObjCTypes.Int8PtrTy); |
| 821 | // The class extension is always unused for metaclasses. |
| 822 | Values[11] = llvm::Constant::getNullValue(ObjCTypes.ClassExtensionPtrTy); |
| 823 | llvm::Constant *Init = llvm::ConstantStruct::get(ObjCTypes.ClassTy, |
| 824 | Values); |
| 825 | |
| 826 | llvm::GlobalVariable *GV = |
| 827 | new llvm::GlobalVariable(ObjCTypes.ClassTy, false, |
| 828 | llvm::GlobalValue::InternalLinkage, |
| 829 | Init, |
| 830 | std::string("\01L_OBJC_METACLASS_")+ClassName, |
| 831 | &CGM.getModule()); |
| 832 | GV->setSection("__OBJC,__meta_class,regular,no_dead_strip"); |
| 833 | UsedGlobals.push_back(GV); |
| 834 | // FIXME: Why? |
| 835 | GV->setAlignment(32); |
| 836 | |
| 837 | return GV; |
| 838 | } |
| 839 | |
| 840 | /* |
| 841 | struct objc_class_ext { |
| 842 | uint32_t size; |
| 843 | const char *weak_ivar_layout; |
| 844 | struct _objc_property_list *properties; |
| 845 | }; |
| 846 | */ |
| 847 | llvm::Constant * |
| 848 | CGObjCMac::EmitClassExtension(const ObjCImplementationDecl *ID) { |
| 849 | uint64_t Size = |
| 850 | CGM.getTargetData().getABITypeSize(ObjCTypes.ClassExtensionTy); |
| 851 | |
| 852 | std::vector<llvm::Constant*> Values(3); |
| 853 | Values[0] = llvm::ConstantInt::get(ObjCTypes.IntTy, Size); |
| 854 | // FIXME: Output weak_ivar string. |
| 855 | Values[1] = llvm::Constant::getNullValue(ObjCTypes.Int8PtrTy); |
| 856 | // FIXME: Output properties. |
| 857 | Values[2] = llvm::Constant::getNullValue(ObjCTypes.PropertyListPtrTy); |
| 858 | assert(!ID->getClassInterface()->getNumPropertyDecl() && |
| 859 | "Cannot emit Obj-C class properties for NeXt runtime."); |
| 860 | |
| 861 | // Return null if no extension bits are used. |
| 862 | if (Values[1]->isNullValue() && Values[2]->isNullValue()) |
| 863 | return llvm::Constant::getNullValue(ObjCTypes.ClassExtensionPtrTy); |
| 864 | |
| 865 | llvm::Constant *Init = |
| 866 | llvm::ConstantStruct::get(ObjCTypes.ClassExtensionTy, Values); |
| 867 | llvm::GlobalVariable *GV = |
| 868 | new llvm::GlobalVariable(ObjCTypes.ClassExtensionTy, false, |
| 869 | llvm::GlobalValue::InternalLinkage, |
| 870 | Init, |
| 871 | (std::string("\01L_OBJC_CLASSEXT_") + |
| 872 | ID->getName()), |
| 873 | &CGM.getModule()); |
| 874 | // No special section, but goes in llvm.used |
| 875 | UsedGlobals.push_back(GV); |
| 876 | |
| 877 | return GV; |
| 878 | } |
| 879 | |
| 880 | /* |
| 881 | struct objc_ivar { |
| 882 | char *ivar_name; |
| 883 | char *ivar_type; |
| 884 | int ivar_offset; |
| 885 | }; |
| 886 | |
| 887 | struct objc_ivar_list { |
| 888 | int ivar_count; |
| 889 | struct objc_ivar list[count]; |
| 890 | }; |
| 891 | */ |
| 892 | llvm::Constant *CGObjCMac::EmitIvarList(const ObjCImplementationDecl *ID, |
| 893 | bool ForClass, |
| 894 | const llvm::Type *InterfaceTy) { |
| 895 | std::vector<llvm::Constant*> Ivars, Ivar(3); |
| 896 | |
| 897 | // When emitting the root class GCC emits ivar entries for the |
| 898 | // actual class structure. It is not clear if we need to follow this |
| 899 | // behavior; for now lets try and get away with not doing it. If so, |
| 900 | // the cleanest solution would be to make up an ObjCInterfaceDecl |
| 901 | // for the class. |
| 902 | if (ForClass) |
| 903 | return llvm::Constant::getNullValue(ObjCTypes.IvarListPtrTy); |
| 904 | |
| 905 | const llvm::StructLayout *Layout = |
| 906 | CGM.getTargetData().getStructLayout(cast<llvm::StructType>(InterfaceTy)); |
| 907 | for (ObjCInterfaceDecl::ivar_iterator |
| 908 | i = ID->getClassInterface()->ivar_begin(), |
| 909 | e = ID->getClassInterface()->ivar_end(); i != e; ++i) { |
| 910 | ObjCIvarDecl *V = *i; |
| 911 | unsigned Offset = |
| 912 | Layout->getElementOffset(CGM.getTypes().getLLVMFieldNo(V)); |
| 913 | std::string TypeStr; |
| 914 | llvm::SmallVector<const RecordType *, 8> EncodingRecordTypes; |
| 915 | Ivar[0] = GetMethodVarName(V->getIdentifier()); |
| 916 | CGM.getContext().getObjCEncodingForType(V->getType(), TypeStr, |
| 917 | EncodingRecordTypes); |
| 918 | Ivar[1] = GetMethodVarType(TypeStr); |
| 919 | Ivar[2] = llvm::ConstantInt::get(ObjCTypes.IntTy, Offset); |
| 920 | Ivars.push_back(llvm::ConstantStruct::get(ObjCTypes.IvarTy, |
| 921 | Ivar)); |
| 922 | } |
| 923 | |
| 924 | // Return null for empty list. |
| 925 | if (Ivars.empty()) |
| 926 | return llvm::Constant::getNullValue(ObjCTypes.IvarListPtrTy); |
| 927 | |
| 928 | std::vector<llvm::Constant*> Values(2); |
| 929 | Values[0] = llvm::ConstantInt::get(ObjCTypes.IntTy, Ivars.size()); |
| 930 | llvm::ArrayType *AT = llvm::ArrayType::get(ObjCTypes.IvarTy, |
| 931 | Ivars.size()); |
| 932 | Values[1] = llvm::ConstantArray::get(AT, Ivars); |
| 933 | llvm::Constant *Init = llvm::ConstantStruct::get(Values); |
| 934 | |
| 935 | const char *Prefix = (ForClass ? "\01L_OBJC_CLASS_VARIABLES_" : |
| 936 | "\01L_OBJC_INSTANCE_VARIABLES_"); |
| 937 | llvm::GlobalVariable *GV = |
| 938 | new llvm::GlobalVariable(Init->getType(), false, |
| 939 | llvm::GlobalValue::InternalLinkage, |
| 940 | Init, |
| 941 | std::string(Prefix) + ID->getName(), |
| 942 | &CGM.getModule()); |
| 943 | if (ForClass) { |
| 944 | GV->setSection("__OBJC,__cls_vars,regular,no_dead_strip"); |
| 945 | // FIXME: Why is this only here? |
| 946 | GV->setAlignment(32); |
| 947 | } else { |
| 948 | GV->setSection("__OBJC,__instance_vars,regular,no_dead_strip"); |
| 949 | } |
| 950 | UsedGlobals.push_back(GV); |
| 951 | return llvm::ConstantExpr::getBitCast(GV, |
| 952 | ObjCTypes.IvarListPtrTy); |
| 953 | } |
| 954 | |
| 955 | /* |
| 956 | struct objc_method { |
| 957 | SEL method_name; |
| 958 | char *method_types; |
| 959 | void *method; |
| 960 | }; |
| 961 | |
| 962 | struct objc_method_list { |
| 963 | struct objc_method_list *obsolete; |
| 964 | int count; |
| 965 | struct objc_method methods_list[count]; |
| 966 | }; |
| 967 | */ |
| 968 | llvm::Constant *CGObjCMac::EmitMethodList(const ObjCImplementationDecl *ID, |
| 969 | bool ForClass) { |
| 970 | std::vector<llvm::Constant*> Methods, Method(3); |
| 971 | |
| 972 | llvm::SmallVector<ObjCMethodDecl*, 32>::const_iterator |
| 973 | i = ForClass ? ID->classmeth_begin() : ID->instmeth_begin(), |
| 974 | e = ForClass ? ID->classmeth_end() : ID->instmeth_end(); |
| 975 | for (; i != e; ++i) { |
| 976 | ObjCMethodDecl *MD = *i; |
| 977 | |
| 978 | Method[0] = |
| 979 | llvm::ConstantExpr::getBitCast(GetMethodVarName(MD->getSelector()), |
| 980 | ObjCTypes.SelectorPtrTy); |
| 981 | Method[1] = GetMethodVarType(MD); |
| 982 | |
| 983 | // FIXME: This is gross, we shouldn't be looking up by name. |
| 984 | std::string Name; |
| 985 | GetNameForMethod(MD, Name); |
| 986 | Method[2] = |
| 987 | llvm::ConstantExpr::getBitCast(CGM.getModule().getFunction(Name), |
| 988 | ObjCTypes.Int8PtrTy); |
| 989 | Methods.push_back(llvm::ConstantStruct::get(ObjCTypes.MethodTy, |
| 990 | Method)); |
| 991 | } |
| 992 | |
| 993 | // Return null for empty list. |
| 994 | if (Methods.empty()) |
| 995 | return llvm::Constant::getNullValue(ObjCTypes.MethodListPtrTy); |
| 996 | |
| 997 | std::vector<llvm::Constant*> Values(3); |
| 998 | Values[0] = llvm::Constant::getNullValue(ObjCTypes.Int8PtrTy); |
| 999 | Values[1] = llvm::ConstantInt::get(ObjCTypes.IntTy, Methods.size()); |
| 1000 | llvm::ArrayType *AT = llvm::ArrayType::get(ObjCTypes.MethodTy, |
| 1001 | Methods.size()); |
| 1002 | Values[2] = llvm::ConstantArray::get(AT, Methods); |
| 1003 | llvm::Constant *Init = llvm::ConstantStruct::get(Values); |
| 1004 | |
| 1005 | const char *Prefix = (ForClass ? "\01L_OBJC_CLASS_METHODS_" : |
| 1006 | "\01L_OBJC_INSTANCE_METHODS_"); |
| 1007 | llvm::GlobalVariable *GV = |
| 1008 | new llvm::GlobalVariable(Init->getType(), false, |
| 1009 | llvm::GlobalValue::InternalLinkage, |
| 1010 | Init, |
| 1011 | std::string(Prefix) + ID->getName(), |
| 1012 | &CGM.getModule()); |
| 1013 | if (ForClass) { |
| 1014 | GV->setSection("__OBJC,__cls_meth,regular,no_dead_strip"); |
| 1015 | } else { |
| 1016 | GV->setSection("__OBJC,__inst_meth,regular,no_dead_strip"); |
| 1017 | } |
| 1018 | UsedGlobals.push_back(GV); |
| 1019 | return llvm::ConstantExpr::getBitCast(GV, |
| 1020 | ObjCTypes.MethodListPtrTy); |
Daniel Dunbar | b7ec246 | 2008-08-16 03:19:19 +0000 | [diff] [blame] | 1021 | } |
| 1022 | |
| 1023 | llvm::Function *CGObjCMac::GenerateMethod(const ObjCMethodDecl *OMD) { |
| 1024 | const llvm::Type *ReturnTy = |
| 1025 | CGM.getTypes().ConvertReturnType(OMD->getResultType()); |
| 1026 | const llvm::Type *SelfTy = |
| 1027 | CGM.getTypes().ConvertType(OMD->getSelfDecl()->getType()); |
| 1028 | |
| 1029 | std::vector<const llvm::Type*> ArgTys; |
| 1030 | ArgTys.reserve(1 + 2 + OMD->param_size()); |
| 1031 | |
| 1032 | // FIXME: This is not something we should have to be dealing with |
| 1033 | // here. |
| 1034 | bool useStructRet = |
| 1035 | CodeGen::CodeGenFunction::hasAggregateLLVMType(OMD->getResultType()); |
| 1036 | if (useStructRet) { |
| 1037 | ArgTys.push_back(llvm::PointerType::getUnqual(ReturnTy)); |
| 1038 | ReturnTy = llvm::Type::VoidTy; |
| 1039 | } |
| 1040 | |
| 1041 | // Implicit arguments |
| 1042 | ArgTys.push_back(SelfTy); |
| 1043 | ArgTys.push_back(ObjCTypes.SelectorPtrTy); |
| 1044 | |
| 1045 | for (ObjCMethodDecl::param_const_iterator |
| 1046 | i = OMD->param_begin(), e = OMD->param_end(); |
| 1047 | i != e; ++i) { |
| 1048 | const llvm::Type *Ty = CGM.getTypes().ConvertType((*i)->getType()); |
| 1049 | if (Ty->isFirstClassType()) { |
| 1050 | ArgTys.push_back(Ty); |
| 1051 | } else { |
| 1052 | ArgTys.push_back(llvm::PointerType::getUnqual(Ty)); |
| 1053 | } |
| 1054 | } |
| 1055 | |
| 1056 | std::string Name; |
| 1057 | GetNameForMethod(OMD, Name); |
| 1058 | |
| 1059 | llvm::Function *Method = |
| 1060 | llvm::Function::Create(llvm::FunctionType::get(ReturnTy, |
| 1061 | ArgTys, |
| 1062 | OMD->isVariadic()), |
| 1063 | llvm::GlobalValue::InternalLinkage, |
| 1064 | Name, |
| 1065 | &CGM.getModule()); |
| 1066 | |
| 1067 | if (useStructRet) |
| 1068 | Method->addParamAttr(1, llvm::ParamAttr::StructRet); |
| 1069 | |
| 1070 | return Method; |
Daniel Dunbar | c17a4d3 | 2008-08-11 02:45:11 +0000 | [diff] [blame] | 1071 | } |
| 1072 | |
| 1073 | llvm::Function *CGObjCMac::ModuleInitFunction() { |
Daniel Dunbar | f77ac86 | 2008-08-11 21:35:06 +0000 | [diff] [blame] | 1074 | // Abuse this interface function as a place to finalize. |
| 1075 | FinishModule(); |
| 1076 | |
Daniel Dunbar | c17a4d3 | 2008-08-11 02:45:11 +0000 | [diff] [blame] | 1077 | return NULL; |
| 1078 | } |
| 1079 | |
Daniel Dunbar | f77ac86 | 2008-08-11 21:35:06 +0000 | [diff] [blame] | 1080 | /* *** Private Interface *** */ |
| 1081 | |
| 1082 | /// EmitImageInfo - Emit the image info marker used to encode some module |
| 1083 | /// level information. |
| 1084 | /// |
| 1085 | /// See: <rdr://4810609&4810587&4810587> |
| 1086 | /// struct IMAGE_INFO { |
| 1087 | /// unsigned version; |
| 1088 | /// unsigned flags; |
| 1089 | /// }; |
| 1090 | enum ImageInfoFlags { |
| 1091 | eImageInfo_FixAndContinue = (1 << 0), // FIXME: Not sure what this implies |
| 1092 | eImageInfo_GarbageCollected = (1 << 1), |
| 1093 | eImageInfo_GCOnly = (1 << 2) |
| 1094 | }; |
| 1095 | |
| 1096 | void CGObjCMac::EmitImageInfo() { |
| 1097 | unsigned version = 0; // Version is unused? |
| 1098 | unsigned flags = 0; |
| 1099 | |
| 1100 | // FIXME: Fix and continue? |
| 1101 | if (CGM.getLangOptions().getGCMode() != LangOptions::NonGC) |
| 1102 | flags |= eImageInfo_GarbageCollected; |
| 1103 | if (CGM.getLangOptions().getGCMode() == LangOptions::GCOnly) |
| 1104 | flags |= eImageInfo_GCOnly; |
| 1105 | |
Daniel Dunbar | f77ac86 | 2008-08-11 21:35:06 +0000 | [diff] [blame] | 1106 | // Emitted as int[2]; |
| 1107 | llvm::Constant *values[2] = { |
| 1108 | llvm::ConstantInt::get(llvm::Type::Int32Ty, version), |
| 1109 | llvm::ConstantInt::get(llvm::Type::Int32Ty, flags) |
| 1110 | }; |
| 1111 | llvm::ArrayType *AT = llvm::ArrayType::get(llvm::Type::Int32Ty, 2); |
Daniel Dunbar | 4e2d7d0 | 2008-08-12 06:48:42 +0000 | [diff] [blame] | 1112 | llvm::GlobalVariable *GV = |
Daniel Dunbar | f77ac86 | 2008-08-11 21:35:06 +0000 | [diff] [blame] | 1113 | new llvm::GlobalVariable(AT, true, |
| 1114 | llvm::GlobalValue::InternalLinkage, |
| 1115 | llvm::ConstantArray::get(AT, values, 2), |
| 1116 | "\01L_OBJC_IMAGE_INFO", |
| 1117 | &CGM.getModule()); |
| 1118 | |
Daniel Dunbar | bbce49b | 2008-08-12 00:12:39 +0000 | [diff] [blame] | 1119 | if (ObjCABI == 1) { |
| 1120 | GV->setSection("__OBJC, __image_info,regular"); |
| 1121 | } else { |
| 1122 | GV->setSection("__DATA, __objc_imageinfo, regular, no_dead_strip"); |
| 1123 | } |
Daniel Dunbar | f77ac86 | 2008-08-11 21:35:06 +0000 | [diff] [blame] | 1124 | |
| 1125 | UsedGlobals.push_back(GV); |
| 1126 | } |
| 1127 | |
Daniel Dunbar | 4e2d7d0 | 2008-08-12 06:48:42 +0000 | [diff] [blame] | 1128 | |
| 1129 | // struct objc_module { |
| 1130 | // unsigned long version; |
| 1131 | // unsigned long size; |
| 1132 | // const char *name; |
| 1133 | // Symtab symtab; |
| 1134 | // }; |
| 1135 | |
| 1136 | // FIXME: Get from somewhere |
| 1137 | static const int ModuleVersion = 7; |
| 1138 | |
| 1139 | void CGObjCMac::EmitModuleInfo() { |
Daniel Dunbar | 4e2d7d0 | 2008-08-12 06:48:42 +0000 | [diff] [blame] | 1140 | uint64_t Size = CGM.getTargetData().getABITypeSize(ObjCTypes.ModuleTy); |
| 1141 | |
| 1142 | std::vector<llvm::Constant*> Values(4); |
| 1143 | Values[0] = llvm::ConstantInt::get(ObjCTypes.LongTy, ModuleVersion); |
| 1144 | Values[1] = llvm::ConstantInt::get(ObjCTypes.LongTy, Size); |
Daniel Dunbar | 7ded7f4 | 2008-08-15 22:20:32 +0000 | [diff] [blame] | 1145 | // This used to be the filename, now it is unused. <rdr://4327263> |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 1146 | Values[2] = GetClassName(&CGM.getContext().Idents.get("")); |
Daniel Dunbar | 4e2d7d0 | 2008-08-12 06:48:42 +0000 | [diff] [blame] | 1147 | Values[3] = EmitModuleSymbols(); |
| 1148 | |
| 1149 | llvm::GlobalVariable *GV = |
| 1150 | new llvm::GlobalVariable(ObjCTypes.ModuleTy, false, |
| 1151 | llvm::GlobalValue::InternalLinkage, |
| 1152 | llvm::ConstantStruct::get(ObjCTypes.ModuleTy, |
| 1153 | Values), |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 1154 | "\01L_OBJC_MODULES", |
Daniel Dunbar | 4e2d7d0 | 2008-08-12 06:48:42 +0000 | [diff] [blame] | 1155 | &CGM.getModule()); |
| 1156 | GV->setSection("__OBJC,__module_info,regular,no_dead_strip"); |
| 1157 | UsedGlobals.push_back(GV); |
| 1158 | } |
| 1159 | |
| 1160 | llvm::Constant *CGObjCMac::EmitModuleSymbols() { |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame^] | 1161 | std::vector<llvm::Constant*> Values(5); |
| 1162 | unsigned NumClasses = DefinedClasses.size(); |
| 1163 | unsigned NumCategories = DefinedCategories.size(); |
| 1164 | |
| 1165 | Values[0] = llvm::ConstantInt::get(ObjCTypes.LongTy, 0); |
| 1166 | Values[1] = llvm::Constant::getNullValue(ObjCTypes.SelectorPtrTy); |
| 1167 | Values[2] = llvm::ConstantInt::get(ObjCTypes.ShortTy, NumClasses); |
| 1168 | Values[3] = llvm::ConstantInt::get(ObjCTypes.ShortTy, NumCategories); |
| 1169 | |
| 1170 | // FIXME: Is this correct? Document. |
| 1171 | std::vector<llvm::Constant*> Symbols(NumClasses + NumCategories); |
| 1172 | std::copy(DefinedClasses.begin(), DefinedClasses.end(), |
| 1173 | Symbols.begin()); |
| 1174 | std::copy(DefinedCategories.begin(), DefinedCategories.end(), |
| 1175 | Symbols.begin() + NumClasses); |
| 1176 | Values[4] = |
| 1177 | llvm::ConstantArray::get(llvm::ArrayType::get(ObjCTypes.ClassPtrTy, |
| 1178 | NumClasses + NumCategories), |
| 1179 | Symbols); |
| 1180 | |
| 1181 | llvm::Constant *Init = llvm::ConstantStruct::get(Values); |
| 1182 | |
Daniel Dunbar | 4e2d7d0 | 2008-08-12 06:48:42 +0000 | [diff] [blame] | 1183 | llvm::GlobalVariable *GV = |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame^] | 1184 | new llvm::GlobalVariable(Init->getType(), false, |
Daniel Dunbar | 4e2d7d0 | 2008-08-12 06:48:42 +0000 | [diff] [blame] | 1185 | llvm::GlobalValue::InternalLinkage, |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame^] | 1186 | Init, |
Daniel Dunbar | 4e2d7d0 | 2008-08-12 06:48:42 +0000 | [diff] [blame] | 1187 | "\01L_OBJC_SYMBOLS", |
| 1188 | &CGM.getModule()); |
| 1189 | GV->setSection("__OBJC,__symbols,regular,no_dead_strip"); |
| 1190 | UsedGlobals.push_back(GV); |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame^] | 1191 | return llvm::ConstantExpr::getBitCast(GV, ObjCTypes.SymtabPtrTy); |
| 1192 | } |
| 1193 | |
| 1194 | llvm::Value *CGObjCMac::EmitClassRef(llvm::IRBuilder<> &Builder, |
| 1195 | const ObjCInterfaceDecl *ID) { |
| 1196 | llvm::GlobalVariable *&Entry = ClassReferences[ID->getIdentifier()]; |
| 1197 | |
| 1198 | if (!Entry) { |
| 1199 | llvm::Constant *Casted = |
| 1200 | llvm::ConstantExpr::getBitCast(GetClassName(ID->getIdentifier()), |
| 1201 | ObjCTypes.ClassPtrTy); |
| 1202 | Entry = |
| 1203 | new llvm::GlobalVariable(ObjCTypes.ClassPtrTy, false, |
| 1204 | llvm::GlobalValue::InternalLinkage, |
| 1205 | Casted, "\01L_OBJC_CLASS_REFERENCES_", |
| 1206 | &CGM.getModule()); |
| 1207 | Entry->setSection("__OBJC,__cls_refs,literal_pointers,no_dead_strip"); |
| 1208 | UsedGlobals.push_back(Entry); |
| 1209 | } |
| 1210 | |
| 1211 | return Builder.CreateLoad(Entry, false, "tmp"); |
Daniel Dunbar | 4e2d7d0 | 2008-08-12 06:48:42 +0000 | [diff] [blame] | 1212 | } |
| 1213 | |
Daniel Dunbar | 259d93d | 2008-08-12 03:39:23 +0000 | [diff] [blame] | 1214 | llvm::Value *CGObjCMac::EmitSelector(llvm::IRBuilder<> &Builder, Selector Sel) { |
| 1215 | llvm::GlobalVariable *&Entry = SelectorReferences[Sel]; |
| 1216 | |
| 1217 | if (!Entry) { |
| 1218 | llvm::Constant *Casted = |
| 1219 | llvm::ConstantExpr::getBitCast(GetMethodVarName(Sel), |
| 1220 | ObjCTypes.SelectorPtrTy); |
| 1221 | Entry = |
| 1222 | new llvm::GlobalVariable(ObjCTypes.SelectorPtrTy, false, |
| 1223 | llvm::GlobalValue::InternalLinkage, |
| 1224 | Casted, "\01L_OBJC_SELECTOR_REFERENCES_", |
| 1225 | &CGM.getModule()); |
| 1226 | Entry->setSection("__OBJC,__message_refs,literal_pointers,no_dead_strip"); |
| 1227 | UsedGlobals.push_back(Entry); |
| 1228 | } |
| 1229 | |
| 1230 | return Builder.CreateLoad(Entry, false, "tmp"); |
| 1231 | } |
| 1232 | |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 1233 | llvm::Constant *CGObjCMac::GetClassName(IdentifierInfo *Ident) { |
| 1234 | llvm::GlobalVariable *&Entry = ClassNames[Ident]; |
Daniel Dunbar | 4e2d7d0 | 2008-08-12 06:48:42 +0000 | [diff] [blame] | 1235 | |
| 1236 | if (!Entry) { |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 1237 | llvm::Constant *C = llvm::ConstantArray::get(Ident->getName()); |
Daniel Dunbar | 4e2d7d0 | 2008-08-12 06:48:42 +0000 | [diff] [blame] | 1238 | Entry = |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 1239 | new llvm::GlobalVariable(C->getType(), false, |
Daniel Dunbar | 4e2d7d0 | 2008-08-12 06:48:42 +0000 | [diff] [blame] | 1240 | llvm::GlobalValue::InternalLinkage, |
| 1241 | C, "\01L_OBJC_CLASS_NAME_", |
| 1242 | &CGM.getModule()); |
| 1243 | Entry->setSection("__TEXT,__cstring,cstring_literals"); |
| 1244 | UsedGlobals.push_back(Entry); |
| 1245 | } |
| 1246 | |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 1247 | return getConstantGEP(Entry, 0, 0); |
Daniel Dunbar | 4e2d7d0 | 2008-08-12 06:48:42 +0000 | [diff] [blame] | 1248 | } |
| 1249 | |
Daniel Dunbar | 259d93d | 2008-08-12 03:39:23 +0000 | [diff] [blame] | 1250 | llvm::Constant *CGObjCMac::GetMethodVarName(Selector Sel) { |
| 1251 | llvm::GlobalVariable *&Entry = MethodVarNames[Sel]; |
| 1252 | |
| 1253 | if (!Entry) { |
| 1254 | llvm::Constant *C = llvm::ConstantArray::get(Sel.getName()); |
| 1255 | Entry = |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 1256 | new llvm::GlobalVariable(C->getType(), false, |
Daniel Dunbar | 259d93d | 2008-08-12 03:39:23 +0000 | [diff] [blame] | 1257 | llvm::GlobalValue::InternalLinkage, |
| 1258 | C, "\01L_OBJC_METH_VAR_NAME_", |
| 1259 | &CGM.getModule()); |
| 1260 | Entry->setSection("__TEXT,__cstring,cstring_literals"); |
| 1261 | UsedGlobals.push_back(Entry); |
| 1262 | } |
| 1263 | |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 1264 | return getConstantGEP(Entry, 0, 0); |
| 1265 | } |
| 1266 | |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame^] | 1267 | // FIXME: Merge into a single cstring creation function. |
| 1268 | llvm::Constant *CGObjCMac::GetMethodVarName(IdentifierInfo *ID) { |
| 1269 | return GetMethodVarName(CGM.getContext().Selectors.getNullarySelector(ID)); |
| 1270 | } |
| 1271 | |
| 1272 | // FIXME: Merge into a single cstring creation function. |
| 1273 | llvm::Constant *CGObjCMac::GetMethodVarName(const std::string &Name) { |
| 1274 | return GetMethodVarName(&CGM.getContext().Idents.get(Name)); |
| 1275 | } |
| 1276 | |
| 1277 | llvm::Constant *CGObjCMac::GetMethodVarType(const std::string &Name) { |
| 1278 | llvm::GlobalVariable *&Entry = MethodVarTypes[Name]; |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 1279 | |
| 1280 | if (!Entry) { |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame^] | 1281 | llvm::Constant *C = llvm::ConstantArray::get(Name); |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 1282 | Entry = |
| 1283 | new llvm::GlobalVariable(C->getType(), false, |
| 1284 | llvm::GlobalValue::InternalLinkage, |
| 1285 | C, "\01L_OBJC_METH_VAR_TYPE_", |
| 1286 | &CGM.getModule()); |
| 1287 | Entry->setSection("__TEXT,__cstring,cstring_literals"); |
| 1288 | UsedGlobals.push_back(Entry); |
| 1289 | } |
| 1290 | |
| 1291 | return getConstantGEP(Entry, 0, 0); |
Daniel Dunbar | 259d93d | 2008-08-12 03:39:23 +0000 | [diff] [blame] | 1292 | } |
| 1293 | |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame^] | 1294 | // FIXME: Merge into a single cstring creation function. |
| 1295 | llvm::Constant *CGObjCMac::GetMethodVarType(ObjCMethodDecl *D) { |
| 1296 | std::string TypeStr; |
| 1297 | CGM.getContext().getObjCEncodingForMethodDecl(D, TypeStr); |
| 1298 | return GetMethodVarType(TypeStr); |
| 1299 | } |
| 1300 | |
Daniel Dunbar | b7ec246 | 2008-08-16 03:19:19 +0000 | [diff] [blame] | 1301 | void CGObjCMac::GetNameForMethod(const ObjCMethodDecl *D, |
| 1302 | std::string &NameOut) { |
| 1303 | // FIXME: Find the mangling GCC uses. |
| 1304 | std::stringstream s; |
| 1305 | s << (D->isInstance() ? "-" : "+"); |
| 1306 | s << "["; |
| 1307 | s << D->getClassInterface()->getName(); |
| 1308 | s << " "; |
| 1309 | s << D->getSelector().getName(); |
| 1310 | s << "]"; |
| 1311 | NameOut = s.str(); |
| 1312 | } |
| 1313 | |
Daniel Dunbar | f77ac86 | 2008-08-11 21:35:06 +0000 | [diff] [blame] | 1314 | void CGObjCMac::FinishModule() { |
Daniel Dunbar | 4e2d7d0 | 2008-08-12 06:48:42 +0000 | [diff] [blame] | 1315 | EmitModuleInfo(); |
| 1316 | |
Daniel Dunbar | f77ac86 | 2008-08-11 21:35:06 +0000 | [diff] [blame] | 1317 | std::vector<llvm::Constant*> Used; |
Daniel Dunbar | 4e2d7d0 | 2008-08-12 06:48:42 +0000 | [diff] [blame] | 1318 | |
Daniel Dunbar | 4e2d7d0 | 2008-08-12 06:48:42 +0000 | [diff] [blame] | 1319 | for (std::vector<llvm::GlobalVariable*>::iterator i = UsedGlobals.begin(), |
Daniel Dunbar | f77ac86 | 2008-08-11 21:35:06 +0000 | [diff] [blame] | 1320 | e = UsedGlobals.end(); i != e; ++i) { |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame^] | 1321 | Used.push_back(llvm::ConstantExpr::getBitCast(*i, ObjCTypes.Int8PtrTy)); |
Daniel Dunbar | f77ac86 | 2008-08-11 21:35:06 +0000 | [diff] [blame] | 1322 | } |
| 1323 | |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame^] | 1324 | llvm::ArrayType *AT = llvm::ArrayType::get(ObjCTypes.Int8PtrTy, Used.size()); |
Daniel Dunbar | f77ac86 | 2008-08-11 21:35:06 +0000 | [diff] [blame] | 1325 | llvm::GlobalValue *GV = |
| 1326 | new llvm::GlobalVariable(AT, false, |
| 1327 | llvm::GlobalValue::AppendingLinkage, |
| 1328 | llvm::ConstantArray::get(AT, Used), |
| 1329 | "llvm.used", |
| 1330 | &CGM.getModule()); |
| 1331 | |
| 1332 | GV->setSection("llvm.metadata"); |
| 1333 | } |
| 1334 | |
| 1335 | /* *** */ |
| 1336 | |
Daniel Dunbar | bbce49b | 2008-08-12 00:12:39 +0000 | [diff] [blame] | 1337 | ObjCTypesHelper::ObjCTypesHelper(CodeGen::CodeGenModule &cgm) |
| 1338 | : CGM(cgm), |
| 1339 | CFStringType(0), |
| 1340 | CFConstantStringClassReference(0), |
Daniel Dunbar | 4e2d7d0 | 2008-08-12 06:48:42 +0000 | [diff] [blame] | 1341 | MessageSendFn(0) |
Daniel Dunbar | bbce49b | 2008-08-12 00:12:39 +0000 | [diff] [blame] | 1342 | { |
Daniel Dunbar | 4e2d7d0 | 2008-08-12 06:48:42 +0000 | [diff] [blame] | 1343 | CodeGen::CodeGenTypes &Types = CGM.getTypes(); |
| 1344 | ASTContext &Ctx = CGM.getContext(); |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 1345 | |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame^] | 1346 | ShortTy = Types.ConvertType(Ctx.ShortTy); |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 1347 | IntTy = Types.ConvertType(Ctx.IntTy); |
Daniel Dunbar | 4e2d7d0 | 2008-08-12 06:48:42 +0000 | [diff] [blame] | 1348 | LongTy = Types.ConvertType(Ctx.LongTy); |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame^] | 1349 | Int8PtrTy = llvm::PointerType::getUnqual(llvm::Type::Int8Ty); |
| 1350 | |
Daniel Dunbar | 4e2d7d0 | 2008-08-12 06:48:42 +0000 | [diff] [blame] | 1351 | ObjectPtrTy = Types.ConvertType(Ctx.getObjCIdType()); |
| 1352 | SelectorPtrTy = Types.ConvertType(Ctx.getObjCSelType()); |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 1353 | |
| 1354 | // FIXME: It would be nice to unify this with the opaque type, so |
| 1355 | // that the IR comes out a bit cleaner. |
| 1356 | const llvm::Type *T = Types.ConvertType(Ctx.getObjCProtoType()); |
| 1357 | ExternalProtocolPtrTy = llvm::PointerType::getUnqual(T); |
Daniel Dunbar | 4e2d7d0 | 2008-08-12 06:48:42 +0000 | [diff] [blame] | 1358 | |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 1359 | MethodDescriptionTy = |
| 1360 | llvm::StructType::get(SelectorPtrTy, |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame^] | 1361 | Int8PtrTy, |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 1362 | NULL); |
| 1363 | CGM.getModule().addTypeName("struct._objc_method_description", |
| 1364 | MethodDescriptionTy); |
| 1365 | |
| 1366 | MethodDescriptionListTy = |
| 1367 | llvm::StructType::get(IntTy, |
| 1368 | llvm::ArrayType::get(MethodDescriptionTy, 0), |
| 1369 | NULL); |
| 1370 | CGM.getModule().addTypeName("struct._objc_method_description_list", |
| 1371 | MethodDescriptionListTy); |
| 1372 | MethodDescriptionListPtrTy = |
| 1373 | llvm::PointerType::getUnqual(MethodDescriptionListTy); |
| 1374 | |
| 1375 | PropertyListTy = llvm::OpaqueType::get(); |
| 1376 | CGM.getModule().addTypeName("struct._objc_property_list", |
| 1377 | PropertyListTy); |
| 1378 | PropertyListPtrTy = llvm::PointerType::getUnqual(PropertyListTy); |
| 1379 | |
| 1380 | // Protocol description structures |
| 1381 | |
| 1382 | ProtocolExtensionTy = |
| 1383 | llvm::StructType::get(Types.ConvertType(Ctx.IntTy), |
| 1384 | llvm::PointerType::getUnqual(MethodDescriptionListTy), |
| 1385 | llvm::PointerType::getUnqual(MethodDescriptionListTy), |
| 1386 | PropertyListPtrTy, |
| 1387 | NULL); |
| 1388 | CGM.getModule().addTypeName("struct._objc_protocol_extension", |
| 1389 | ProtocolExtensionTy); |
| 1390 | ProtocolExtensionPtrTy = llvm::PointerType::getUnqual(ProtocolExtensionTy); |
| 1391 | |
| 1392 | // Handle recursive construction of Protocl and ProtocolList types |
| 1393 | |
| 1394 | llvm::PATypeHolder ProtocolTyHolder = llvm::OpaqueType::get(); |
| 1395 | llvm::PATypeHolder ProtocolListTyHolder = llvm::OpaqueType::get(); |
| 1396 | |
| 1397 | T = llvm::StructType::get(llvm::PointerType::getUnqual(ProtocolListTyHolder), |
| 1398 | LongTy, |
| 1399 | llvm::ArrayType::get(ProtocolTyHolder, 0), |
| 1400 | NULL); |
| 1401 | cast<llvm::OpaqueType>(ProtocolListTyHolder.get())->refineAbstractTypeTo(T); |
| 1402 | |
| 1403 | T = llvm::StructType::get(llvm::PointerType::getUnqual(ProtocolExtensionTy), |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame^] | 1404 | Int8PtrTy, |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 1405 | llvm::PointerType::getUnqual(ProtocolListTyHolder), |
| 1406 | MethodDescriptionListPtrTy, |
| 1407 | MethodDescriptionListPtrTy, |
| 1408 | NULL); |
| 1409 | cast<llvm::OpaqueType>(ProtocolTyHolder.get())->refineAbstractTypeTo(T); |
| 1410 | |
| 1411 | ProtocolListTy = cast<llvm::StructType>(ProtocolListTyHolder.get()); |
| 1412 | CGM.getModule().addTypeName("struct._objc_protocol_list", |
| 1413 | ProtocolListTy); |
| 1414 | ProtocolListPtrTy = llvm::PointerType::getUnqual(ProtocolListTy); |
| 1415 | |
| 1416 | ProtocolTy = cast<llvm::StructType>(ProtocolTyHolder.get()); |
| 1417 | CGM.getModule().addTypeName("struct.__objc_protocol", ProtocolTy); |
| 1418 | ProtocolPtrTy = llvm::PointerType::getUnqual(ProtocolTy); |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame^] | 1419 | |
| 1420 | // Class description structures |
| 1421 | |
| 1422 | IvarTy = llvm::StructType::get(Int8PtrTy, |
| 1423 | Int8PtrTy, |
| 1424 | IntTy, |
| 1425 | NULL); |
| 1426 | CGM.getModule().addTypeName("struct._objc_ivar", IvarTy); |
| 1427 | |
| 1428 | IvarListTy = llvm::OpaqueType::get(); |
| 1429 | CGM.getModule().addTypeName("struct._objc_ivar_list", IvarListTy); |
| 1430 | IvarListPtrTy = llvm::PointerType::getUnqual(IvarListTy); |
| 1431 | |
| 1432 | MethodTy = llvm::StructType::get(SelectorPtrTy, |
| 1433 | Int8PtrTy, |
| 1434 | Int8PtrTy, |
| 1435 | NULL); |
| 1436 | CGM.getModule().addTypeName("struct._objc_method", MethodTy); |
| 1437 | |
| 1438 | MethodListTy = llvm::OpaqueType::get(); |
| 1439 | CGM.getModule().addTypeName("struct._objc_method_list", MethodListTy); |
| 1440 | MethodListPtrTy = llvm::PointerType::getUnqual(MethodListTy); |
| 1441 | |
| 1442 | CacheTy = llvm::OpaqueType::get(); |
| 1443 | CGM.getModule().addTypeName("struct._objc_cache", CacheTy); |
| 1444 | CachePtrTy = llvm::PointerType::getUnqual(CacheTy); |
| 1445 | |
| 1446 | ClassExtensionTy = |
| 1447 | llvm::StructType::get(IntTy, |
| 1448 | Int8PtrTy, |
| 1449 | PropertyListPtrTy, |
| 1450 | NULL); |
| 1451 | CGM.getModule().addTypeName("struct._objc_class_extension", ClassExtensionTy); |
| 1452 | ClassExtensionPtrTy = llvm::PointerType::getUnqual(ClassExtensionTy); |
| 1453 | |
| 1454 | llvm::PATypeHolder ClassTyHolder = llvm::OpaqueType::get(); |
| 1455 | |
| 1456 | T = llvm::StructType::get(llvm::PointerType::getUnqual(ClassTyHolder), |
| 1457 | llvm::PointerType::getUnqual(ClassTyHolder), |
| 1458 | Int8PtrTy, |
| 1459 | LongTy, |
| 1460 | LongTy, |
| 1461 | LongTy, |
| 1462 | IvarListPtrTy, |
| 1463 | MethodListPtrTy, |
| 1464 | CachePtrTy, |
| 1465 | ProtocolListPtrTy, |
| 1466 | Int8PtrTy, |
| 1467 | ClassExtensionPtrTy, |
| 1468 | NULL); |
| 1469 | cast<llvm::OpaqueType>(ClassTyHolder.get())->refineAbstractTypeTo(T); |
| 1470 | |
| 1471 | ClassTy = cast<llvm::StructType>(ClassTyHolder.get()); |
| 1472 | CGM.getModule().addTypeName("struct._objc_class", ClassTy); |
| 1473 | ClassPtrTy = llvm::PointerType::getUnqual(ClassTy); |
| 1474 | |
| 1475 | // Global metadata structures |
| 1476 | |
| 1477 | SymtabTy = llvm::StructType::get(LongTy, |
| 1478 | SelectorPtrTy, |
| 1479 | ShortTy, |
| 1480 | ShortTy, |
| 1481 | llvm::ArrayType::get(ClassPtrTy, 0), |
| 1482 | NULL); |
| 1483 | CGM.getModule().addTypeName("struct._objc_symtab", SymtabTy); |
| 1484 | SymtabPtrTy = llvm::PointerType::getUnqual(SymtabTy); |
| 1485 | |
| 1486 | ModuleTy = |
| 1487 | llvm::StructType::get(LongTy, |
| 1488 | LongTy, |
| 1489 | Int8PtrTy, |
| 1490 | SymtabPtrTy, |
| 1491 | NULL); |
| 1492 | CGM.getModule().addTypeName("struct._objc_module", ModuleTy); |
Daniel Dunbar | bbce49b | 2008-08-12 00:12:39 +0000 | [diff] [blame] | 1493 | } |
| 1494 | |
| 1495 | ObjCTypesHelper::~ObjCTypesHelper() { |
| 1496 | } |
| 1497 | |
| 1498 | const llvm::StructType *ObjCTypesHelper::getCFStringType() { |
| 1499 | if (!CFStringType) { |
| 1500 | CFStringType = |
| 1501 | llvm::StructType::get(llvm::PointerType::getUnqual(llvm::Type::Int32Ty), |
| 1502 | llvm::Type::Int32Ty, |
Daniel Dunbar | 27f9d77 | 2008-08-21 04:36:09 +0000 | [diff] [blame^] | 1503 | Int8PtrTy, |
Daniel Dunbar | bbce49b | 2008-08-12 00:12:39 +0000 | [diff] [blame] | 1504 | LongTy, |
| 1505 | NULL); |
| 1506 | |
| 1507 | CGM.getModule().addTypeName("struct.__builtin_CFString", CFStringType); |
| 1508 | } |
| 1509 | |
| 1510 | return CFStringType; |
| 1511 | } |
| 1512 | |
| 1513 | llvm::Constant *ObjCTypesHelper::getCFConstantStringClassReference() { |
| 1514 | if (!CFConstantStringClassReference) { |
| 1515 | llvm::GlobalValue *GV = |
| 1516 | new llvm::GlobalVariable(llvm::ArrayType::get(llvm::Type::Int32Ty, 0), |
| 1517 | false, |
| 1518 | llvm::GlobalValue::ExternalLinkage, |
| 1519 | 0, "__CFConstantStringClassReference", |
| 1520 | &CGM.getModule()); |
| 1521 | |
| 1522 | // Decay to pointer. |
| 1523 | CFConstantStringClassReference = getConstantGEP(GV, 0, 0); |
| 1524 | } |
| 1525 | |
| 1526 | return CFConstantStringClassReference; |
| 1527 | } |
| 1528 | |
Daniel Dunbar | 259d93d | 2008-08-12 03:39:23 +0000 | [diff] [blame] | 1529 | llvm::Function *ObjCTypesHelper::getMessageSendFn() { |
| 1530 | if (!MessageSendFn) { |
| 1531 | std::vector<const llvm::Type*> Params; |
| 1532 | Params.push_back(ObjectPtrTy); |
| 1533 | Params.push_back(SelectorPtrTy); |
| 1534 | MessageSendFn = llvm::Function::Create(llvm::FunctionType::get(ObjectPtrTy, |
| 1535 | Params, |
| 1536 | true), |
| 1537 | llvm::Function::ExternalLinkage, |
| 1538 | "objc_msgSend", |
| 1539 | &CGM.getModule()); |
| 1540 | } |
| 1541 | |
| 1542 | return MessageSendFn; |
| 1543 | } |
| 1544 | |
Daniel Dunbar | bbce49b | 2008-08-12 00:12:39 +0000 | [diff] [blame] | 1545 | /* *** */ |
| 1546 | |
Daniel Dunbar | 6efc0c5 | 2008-08-13 03:21:16 +0000 | [diff] [blame] | 1547 | CodeGen::CGObjCRuntime * |
| 1548 | CodeGen::CreateMacObjCRuntime(CodeGen::CodeGenModule &CGM) { |
Daniel Dunbar | c17a4d3 | 2008-08-11 02:45:11 +0000 | [diff] [blame] | 1549 | return new CGObjCMac(CGM); |
| 1550 | } |