CGObjCGNU.cpp revision bbce49b9e5c6d7f05926b89f8e6fd235ae01c250
120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov//===------- CGObjCGNU.cpp - Emit LLVM Code from ASTs for a Module --------===// 20f984268b05edab2cc555a427c441baa9c252658Chris Lattner// 30f984268b05edab2cc555a427c441baa9c252658Chris Lattner// The LLVM Compiler Infrastructure 40f984268b05edab2cc555a427c441baa9c252658Chris Lattner// 50f984268b05edab2cc555a427c441baa9c252658Chris Lattner// This file is distributed under the University of Illinois Open Source 60f984268b05edab2cc555a427c441baa9c252658Chris Lattner// License. See LICENSE.TXT for details. 70f984268b05edab2cc555a427c441baa9c252658Chris Lattner// 80f984268b05edab2cc555a427c441baa9c252658Chris Lattner//===----------------------------------------------------------------------===// 90f984268b05edab2cc555a427c441baa9c252658Chris Lattner// 1020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// This provides Objective-C code generation targetting the GNU runtime. The 1120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// class in this file generates structures used by the GNU Objective-C runtime 1220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// library. These structures are defined in objc/objc.h and objc/objc-api.h in 1320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// the GNU runtime distribution. 140f984268b05edab2cc555a427c441baa9c252658Chris Lattner// 150f984268b05edab2cc555a427c441baa9c252658Chris Lattner//===----------------------------------------------------------------------===// 160f984268b05edab2cc555a427c441baa9c252658Chris Lattner 170f984268b05edab2cc555a427c441baa9c252658Chris Lattner#include "CGObjCRuntime.h" 18dce1406f1c1f572cfd61c494546572d63461c741Chris Lattner#include "CodeGenModule.h" 19dce1406f1c1f572cfd61c494546572d63461c741Chris Lattner#include "clang/AST/ASTContext.h" 20e91593ef084479340582b2ba177b44be50a717b7Daniel Dunbar#include "clang/AST/Decl.h" 210f984268b05edab2cc555a427c441baa9c252658Chris Lattner#include "llvm/Module.h" 220f984268b05edab2cc555a427c441baa9c252658Chris Lattner#include "llvm/Support/Compiler.h" 2350b36741673258aaebcd3c7fe1260031901cae57Chris Lattner#include "llvm/Support/IRBuilder.h" 240f984268b05edab2cc555a427c441baa9c252658Chris Lattner#include "llvm/ADT/SmallVector.h" 2520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov#include "llvm/ADT/StringMap.h" 2620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov#include <map> 27dce1406f1c1f572cfd61c494546572d63461c741Chris Lattnerusing namespace clang; 2820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovusing llvm::dyn_cast; 2920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 3020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// The version of the runtime that this class targets. Must match the version 3120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// in the runtime. 3220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovstatic const int RuntimeVersion = 8; 3320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovstatic const int ProtocolVersion = 2; 340f984268b05edab2cc555a427c441baa9c252658Chris Lattner 350f984268b05edab2cc555a427c441baa9c252658Chris Lattnernamespace { 36dce1406f1c1f572cfd61c494546572d63461c741Chris Lattnerclass CGObjCGNU : public CodeGen::CGObjCRuntime { 370f984268b05edab2cc555a427c441baa9c252658Chris Lattnerprivate: 38dce1406f1c1f572cfd61c494546572d63461c741Chris Lattner CodeGen::CodeGenModule &CGM; 390f984268b05edab2cc555a427c441baa9c252658Chris Lattner llvm::Module &TheModule; 4020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::StructType *SelStructTy; 41391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner const llvm::Type *SelectorTy; 42391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner const llvm::Type *PtrToInt8Ty; 43391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner const llvm::Type *IMPTy; 44391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner const llvm::Type *IdTy; 45391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner const llvm::Type *IntTy; 46391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner const llvm::Type *PtrTy; 47391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner const llvm::Type *LongTy; 48391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner const llvm::Type *PtrToIntTy; 4920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Classes; 5020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Categories; 5120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> ConstantStrings; 5220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Function *LoadFunction; 5320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StringMap<llvm::Constant*> ExistingProtocols; 5420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov typedef std::pair<std::string, std::string> TypedSelector; 5520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::map<TypedSelector, llvm::GlobalAlias*> TypedSelectors; 5620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StringMap<llvm::GlobalAlias*> UntypedSelectors; 5720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Some zeros used for GEPs in lots of places. 5820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Zeros[2]; 5920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *NULLPtr; 6020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovprivate: 6120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateIvarList( 6220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarNames, 6320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarTypes, 6420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarOffsets); 6520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateMethodList(const std::string &ClassName, 6620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const std::string &CategoryName, 67a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner const llvm::SmallVectorImpl<Selector> &MethodSels, 6820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &MethodTypes, 6920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov bool isClassMethodList); 7020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateProtocolList( 7120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<std::string> &Protocols); 7220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateClassStructure( 7320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MetaClass, 7420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SuperClass, 7520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov unsigned info, 76d002cc6fc5b72bf00e3b7b4571ccf0f23c789b4bChris Lattner const char *Name, 7720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Version, 7820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *InstanceSize, 7920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *IVars, 8020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Methods, 8120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Protocols); 8220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateProtocolMethodList( 8320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &MethodNames, 8420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &MethodTypes); 8520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MakeConstantString(const std::string &Str, const std::string 8620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov &Name=""); 8720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MakeGlobal(const llvm::StructType *Ty, 8820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> &V, const std::string &Name=""); 8920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MakeGlobal(const llvm::ArrayType *Ty, 9020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> &V, const std::string &Name=""); 910f984268b05edab2cc555a427c441baa9c252658Chris Lattnerpublic: 92dce1406f1c1f572cfd61c494546572d63461c741Chris Lattner CGObjCGNU(CodeGen::CodeGenModule &cgm); 93bbce49b9e5c6d7f05926b89f8e6fd235ae01c250Daniel Dunbar virtual llvm::Constant *GenerateConstantString(const std::string &String); 9485e356825b291f86c6e926638914222b834b71a3Chris Lattner virtual llvm::Value *GenerateMessageSend(llvm::IRBuilder<> &Builder, 950f984268b05edab2cc555a427c441baa9c252658Chris Lattner const llvm::Type *ReturnTy, 96391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner llvm::Value *Sender, 970f984268b05edab2cc555a427c441baa9c252658Chris Lattner llvm::Value *Receiver, 989384c768e93f270118a30ce96546083a666da284Chris Lattner Selector Sel, 990f984268b05edab2cc555a427c441baa9c252658Chris Lattner llvm::Value** ArgV, 1000f984268b05edab2cc555a427c441baa9c252658Chris Lattner unsigned ArgC); 10185e356825b291f86c6e926638914222b834b71a3Chris Lattner virtual llvm::Value *GenerateMessageSendSuper(llvm::IRBuilder<> &Builder, 1028e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner const llvm::Type *ReturnTy, 1038e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner llvm::Value *Sender, 1048e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner const char *SuperClassName, 1058e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner llvm::Value *Receiver, 1068e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner Selector Sel, 1078e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner llvm::Value** ArgV, 1088e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner unsigned ArgC); 10985e356825b291f86c6e926638914222b834b71a3Chris Lattner virtual llvm::Value *LookupClass(llvm::IRBuilder<> &Builder, 1109384c768e93f270118a30ce96546083a666da284Chris Lattner llvm::Value *ClassName); 11185e356825b291f86c6e926638914222b834b71a3Chris Lattner virtual llvm::Value *GetSelector(llvm::IRBuilder<> &Builder, Selector Sel); 1128e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner 11320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov virtual llvm::Function *MethodPreamble( 11420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const std::string &ClassName, 11520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const std::string &CategoryName, 11620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const std::string &MethodName, 11720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::Type *ReturnTy, 11820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::Type *SelfTy, 11920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::Type **ArgTy, 12020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov unsigned ArgC, 12120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov bool isClassMethod, 12220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov bool isVarArg); 12320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov virtual void GenerateCategory(const char *ClassName, const char *CategoryName, 124a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner const llvm::SmallVectorImpl<Selector> &InstanceMethodSels, 12520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &InstanceMethodTypes, 126a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner const llvm::SmallVectorImpl<Selector> &ClassMethodSels, 12720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &ClassMethodTypes, 12820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<std::string> &Protocols); 12920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov virtual void GenerateClass( 13020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const char *ClassName, 13120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const char *SuperClassName, 13220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const int instanceSize, 13320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarNames, 13420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarTypes, 13520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarOffsets, 136a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner const llvm::SmallVectorImpl<Selector> &InstanceMethodSels, 13720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &InstanceMethodTypes, 138a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner const llvm::SmallVectorImpl<Selector> &ClassMethodSels, 13920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &ClassMethodTypes, 14020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<std::string> &Protocols); 14185e356825b291f86c6e926638914222b834b71a3Chris Lattner virtual llvm::Value *GenerateProtocolRef(llvm::IRBuilder<> &Builder, 14285e356825b291f86c6e926638914222b834b71a3Chris Lattner const char *ProtocolName); 14320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov virtual void GenerateProtocol(const char *ProtocolName, 14420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<std::string> &Protocols, 14520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &InstanceMethodNames, 14620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &InstanceMethodTypes, 14720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &ClassMethodNames, 14820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &ClassMethodTypes); 14920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov virtual llvm::Function *ModuleInitFunction(); 1500f984268b05edab2cc555a427c441baa9c252658Chris Lattner}; 1510f984268b05edab2cc555a427c441baa9c252658Chris Lattner} // end anonymous namespace 1520f984268b05edab2cc555a427c441baa9c252658Chris Lattner 15320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 15420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 15520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovstatic std::string SymbolNameForClass(const std::string &ClassName) { 15620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return ".objc_class_" + ClassName; 15720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 15820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 15920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovstatic std::string SymbolNameForMethod(const std::string &ClassName, const 16020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::string &CategoryName, const std::string &MethodName, bool isClassMethod) 16120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov{ 16220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return "._objc_method_" + ClassName +"("+CategoryName+")"+ 16320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov (isClassMethod ? "+" : "-") + MethodName; 16420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 16520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 166dce1406f1c1f572cfd61c494546572d63461c741Chris LattnerCGObjCGNU::CGObjCGNU(CodeGen::CodeGenModule &cgm) 167dce1406f1c1f572cfd61c494546572d63461c741Chris Lattner : CGM(cgm), TheModule(CGM.getModule()) { 168dce1406f1c1f572cfd61c494546572d63461c741Chris Lattner IntTy = CGM.getTypes().ConvertType(CGM.getContext().IntTy); 169dce1406f1c1f572cfd61c494546572d63461c741Chris Lattner LongTy = CGM.getTypes().ConvertType(CGM.getContext().LongTy); 170dce1406f1c1f572cfd61c494546572d63461c741Chris Lattner 17120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Zeros[0] = llvm::ConstantInt::get(llvm::Type::Int32Ty, 0); 17220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Zeros[1] = Zeros[0]; 17320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULLPtr = llvm::ConstantPointerNull::get( 17420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::PointerType::getUnqual(llvm::Type::Int8Ty)); 175391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner // C string type. Used in lots of places. 176391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner PtrToInt8Ty = 177391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner llvm::PointerType::getUnqual(llvm::Type::Int8Ty); 178391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner // Get the selector Type. 17920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov SelStructTy = llvm::StructType::get( 180391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner PtrToInt8Ty, 181391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner PtrToInt8Ty, 182391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner NULL); 183391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner SelectorTy = llvm::PointerType::getUnqual(SelStructTy); 184391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner PtrToIntTy = llvm::PointerType::getUnqual(IntTy); 185391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner PtrTy = PtrToInt8Ty; 186391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner 187391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner // Object type 188391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner llvm::PATypeHolder OpaqueObjTy = llvm::OpaqueType::get(); 189391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner llvm::Type *OpaqueIdTy = llvm::PointerType::getUnqual(OpaqueObjTy); 190391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner IdTy = llvm::StructType::get(OpaqueIdTy, NULL); 191391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner llvm::cast<llvm::OpaqueType>(OpaqueObjTy.get())->refineAbstractTypeTo(IdTy); 192391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner IdTy = llvm::cast<llvm::StructType>(OpaqueObjTy.get()); 193391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner IdTy = llvm::PointerType::getUnqual(IdTy); 194391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner 195391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner // IMP type 196391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner std::vector<const llvm::Type*> IMPArgs; 197391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner IMPArgs.push_back(IdTy); 198391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner IMPArgs.push_back(SelectorTy); 199391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner IMPTy = llvm::FunctionType::get(IdTy, IMPArgs, true); 20020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 20120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// This has to perform the lookup every time, since posing and related 20220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// techniques can modify the name -> class mapping. 20385e356825b291f86c6e926638914222b834b71a3Chris Lattnerllvm::Value *CGObjCGNU::LookupClass(llvm::IRBuilder<> &Builder, 20420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Value *ClassName) { 20520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ClassLookupFn = 20620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov TheModule.getOrInsertFunction("objc_lookup_class", IdTy, PtrToInt8Ty, 20720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 20820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return Builder.CreateCall(ClassLookupFn, ClassName); 209391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner} 210391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner 2118e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner/// GetSelector - Return the pointer to the unique'd string for this selector. 21285e356825b291f86c6e926638914222b834b71a3Chris Lattnerllvm::Value *CGObjCGNU::GetSelector(llvm::IRBuilder<> &Builder, Selector Sel) { 2138e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner // FIXME: uniquing on the string is wasteful, unique on Sel instead! 2148e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner llvm::GlobalAlias *&US = UntypedSelectors[Sel.getName()]; 2158e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner if (US == 0) 2168e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner US = new llvm::GlobalAlias(llvm::PointerType::getUnqual(SelectorTy), 2178e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner llvm::GlobalValue::InternalLinkage, 2188e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner ".objc_untyped_selector_alias", 2198e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner NULL, &TheModule); 2208e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner 2218e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner return Builder.CreateLoad(US); 2228e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner 2238e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner} 2248e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner 2255e7dcc62e4637591959f9c372f6c5258d0d263e0Chris Lattnerllvm::Constant *CGObjCGNU::MakeConstantString(const std::string &Str, 2265e7dcc62e4637591959f9c372f6c5258d0d263e0Chris Lattner const std::string &Name) { 22720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant * ConstStr = llvm::ConstantArray::get(Str); 22820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ConstStr = new llvm::GlobalVariable(ConstStr->getType(), true, 22920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::GlobalValue::InternalLinkage, 23020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ConstStr, Name, &TheModule); 23120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return llvm::ConstantExpr::getGetElementPtr(ConstStr, Zeros, 2); 23220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 23320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::MakeGlobal(const llvm::StructType *Ty, 23420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> &V, const std::string &Name) { 23520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *C = llvm::ConstantStruct::get(Ty, V); 23620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return new llvm::GlobalVariable(Ty, false, 23720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::GlobalValue::InternalLinkage, C, Name, &TheModule); 23820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 23920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::MakeGlobal(const llvm::ArrayType *Ty, 24020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> &V, const std::string &Name) { 24120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *C = llvm::ConstantArray::get(Ty, V); 24220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return new llvm::GlobalVariable(Ty, false, 24320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::GlobalValue::InternalLinkage, C, Name, &TheModule); 24420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 24520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 24620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// Generate an NSConstantString object. 24720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov//TODO: In case there are any crazy people still using the GNU runtime without 24820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov//an OpenStep implementation, this should let them select their own class for 24920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov//constant strings. 250bbce49b9e5c6d7f05926b89f8e6fd235ae01c250Daniel Dunbarllvm::Constant *CGObjCGNU::GenerateConstantString(const std::string &Str) { 25120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Ivars; 25220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Ivars.push_back(NULLPtr); 25313fd7e5111032f54b538dd66d035b0ccc1f82467Chris Lattner Ivars.push_back(MakeConstantString(Str)); 254bbce49b9e5c6d7f05926b89f8e6fd235ae01c250Daniel Dunbar Ivars.push_back(llvm::ConstantInt::get(IntTy, Str.size())); 25520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ObjCStr = MakeGlobal( 25620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StructType::get(PtrToInt8Ty, PtrToInt8Ty, IntTy, NULL), 25720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Ivars, ".objc_str"); 25820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ConstantStrings.push_back( 25920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ConstantExpr::getBitCast(ObjCStr, PtrToInt8Ty)); 26020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return ObjCStr; 26120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 26220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 26320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov///Generates a message send where the super is the receiver. This is a message 26420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov///send to self with special delivery semantics indicating which class's method 26520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov///should be called. 26685e356825b291f86c6e926638914222b834b71a3Chris Lattnerllvm::Value *CGObjCGNU::GenerateMessageSendSuper(llvm::IRBuilder<> &Builder, 2678e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner const llvm::Type *ReturnTy, 2688e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner llvm::Value *Sender, 2698e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner const char *SuperClassName, 2708e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner llvm::Value *Receiver, 2718e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner Selector Sel, 2728e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner llvm::Value** ArgV, 2738e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner unsigned ArgC) { 27420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // TODO: This should be cached, not looked up every time. 27520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Value *ReceiverClass = LookupClass(Builder, 27620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov MakeConstantString(SuperClassName)); 2778e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner llvm::Value *cmd = GetSelector(Builder, Sel); 27820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<const llvm::Type*> impArgTypes; 27920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov impArgTypes.push_back(Receiver->getType()); 28020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov impArgTypes.push_back(SelectorTy); 28120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 28220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Avoid an explicit cast on the IMP by getting a version that has the right 28320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // return type. 28420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::FunctionType *impType = llvm::FunctionType::get(ReturnTy, impArgTypes, 28520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov true); 28620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Construct the structure used to look up the IMP 28720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StructType *ObjCSuperTy = llvm::StructType::get(Receiver->getType(), 28820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IdTy, NULL); 28920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Value *ObjCSuper = Builder.CreateAlloca(ObjCSuperTy); 2901e692ace08959399794363e77499b73da5494af9Eli Friedman // FIXME: volatility 29120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Builder.CreateStore(Receiver, Builder.CreateStructGEP(ObjCSuper, 0)); 29220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Builder.CreateStore(ReceiverClass, Builder.CreateStructGEP(ObjCSuper, 1)); 29320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 29420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Get the IMP 29520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *lookupFunction = 29620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov TheModule.getOrInsertFunction("objc_msg_lookup_super", 29720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::PointerType::getUnqual(impType), 29820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::PointerType::getUnqual(ObjCSuperTy), 29920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov SelectorTy, NULL); 30020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Value *lookupArgs[] = {ObjCSuper, cmd}; 30120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Value *imp = Builder.CreateCall(lookupFunction, lookupArgs, 30220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov lookupArgs+2); 30320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 30420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Call the method 30520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::SmallVector<llvm::Value*, 8> callArgs; 30620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov callArgs.push_back(Receiver); 30720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov callArgs.push_back(cmd); 30820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov callArgs.insert(callArgs.end(), ArgV, ArgV+ArgC); 30920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return Builder.CreateCall(imp, callArgs.begin(), callArgs.end()); 31020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 31120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 31220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// Generate code for a message send expression. 31385e356825b291f86c6e926638914222b834b71a3Chris Lattnerllvm::Value *CGObjCGNU::GenerateMessageSend(llvm::IRBuilder<> &Builder, 3140f984268b05edab2cc555a427c441baa9c252658Chris Lattner const llvm::Type *ReturnTy, 315391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner llvm::Value *Sender, 3160f984268b05edab2cc555a427c441baa9c252658Chris Lattner llvm::Value *Receiver, 3179384c768e93f270118a30ce96546083a666da284Chris Lattner Selector Sel, 3180f984268b05edab2cc555a427c441baa9c252658Chris Lattner llvm::Value** ArgV, 3190f984268b05edab2cc555a427c441baa9c252658Chris Lattner unsigned ArgC) { 3209384c768e93f270118a30ce96546083a666da284Chris Lattner llvm::Value *cmd = GetSelector(Builder, Sel); 3210f984268b05edab2cc555a427c441baa9c252658Chris Lattner 3220f984268b05edab2cc555a427c441baa9c252658Chris Lattner // Look up the method implementation. 3230f984268b05edab2cc555a427c441baa9c252658Chris Lattner std::vector<const llvm::Type*> impArgTypes; 32420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::Type *RetTy; 32520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov //TODO: Revisit this when LLVM supports aggregate return types. 32620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov if (ReturnTy->isSingleValueType() && ReturnTy != llvm::Type::VoidTy) { 32720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov RetTy = ReturnTy; 32820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } else { 32920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // For struct returns allocate the space in the caller and pass it up to 33020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // the sender. 33120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov RetTy = llvm::Type::VoidTy; 33220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov impArgTypes.push_back(llvm::PointerType::getUnqual(ReturnTy)); 33320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 3340f984268b05edab2cc555a427c441baa9c252658Chris Lattner impArgTypes.push_back(Receiver->getType()); 335391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner impArgTypes.push_back(SelectorTy); 3360f984268b05edab2cc555a427c441baa9c252658Chris Lattner 3370f984268b05edab2cc555a427c441baa9c252658Chris Lattner // Avoid an explicit cast on the IMP by getting a version that has the right 3380f984268b05edab2cc555a427c441baa9c252658Chris Lattner // return type. 33920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::FunctionType *impType = llvm::FunctionType::get(RetTy, impArgTypes, 3400f984268b05edab2cc555a427c441baa9c252658Chris Lattner true); 3410f984268b05edab2cc555a427c441baa9c252658Chris Lattner 3420f984268b05edab2cc555a427c441baa9c252658Chris Lattner llvm::Constant *lookupFunction = 3430f984268b05edab2cc555a427c441baa9c252658Chris Lattner TheModule.getOrInsertFunction("objc_msg_lookup", 344391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner llvm::PointerType::getUnqual(impType), 345391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner Receiver->getType(), SelectorTy, NULL); 3463eae03e7d165f20a863a9a4d7122ba2a691ab16dChris Lattner llvm::Value *imp = Builder.CreateCall2(lookupFunction, Receiver, cmd); 3473eae03e7d165f20a863a9a4d7122ba2a691ab16dChris Lattner 3483eae03e7d165f20a863a9a4d7122ba2a691ab16dChris Lattner // Call the method. 34920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::SmallVector<llvm::Value*, 16> Args; 35020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov if (!ReturnTy->isSingleValueType()) { 35120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Value *Return = Builder.CreateAlloca(ReturnTy); 35220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Args.push_back(Return); 35320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 35420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Args.push_back(Receiver); 35520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Args.push_back(cmd); 35620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Args.insert(Args.end(), ArgV, ArgV+ArgC); 3578fdf32822be2238aa7db62d40e75b168b637ab7dChris Lattner if (!ReturnTy->isSingleValueType()) { 3588fdf32822be2238aa7db62d40e75b168b637ab7dChris Lattner Builder.CreateCall(imp, Args.begin(), Args.end()); 3598fdf32822be2238aa7db62d40e75b168b637ab7dChris Lattner return Args[0]; 3608fdf32822be2238aa7db62d40e75b168b637ab7dChris Lattner } 36120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return Builder.CreateCall(imp, Args.begin(), Args.end()); 36220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 36320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 36420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// Generates a MethodList. Used in construction of a objc_class and 36520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// objc_category structures. 36620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::GenerateMethodList(const std::string &ClassName, 367a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner const std::string &CategoryName, 368a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner const llvm::SmallVectorImpl<Selector> &MethodSels, 36920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &MethodTypes, 37020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov bool isClassMethodList) { 37120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Get the method structure type. 37220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StructType *ObjCMethodTy = llvm::StructType::get( 37320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // Really a selector, but the runtime creates it us. 37420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // Method types 37520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::PointerType::getUnqual(IMPTy), //Method pointer 37620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 37720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Methods; 37820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 37920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (unsigned int i = 0, e = MethodTypes.size(); i < e; ++i) { 38020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 381a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner llvm::Constant *C = CGM.GetAddrOfConstantString(MethodSels[i].getName()); 382a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner Elements.push_back(llvm::ConstantExpr::getGetElementPtr(C, Zeros, 2)); 38320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back( 38420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ConstantExpr::getGetElementPtr(MethodTypes[i], Zeros, 2)); 38520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Method = 38620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov TheModule.getFunction(SymbolNameForMethod(ClassName, CategoryName, 387a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner MethodSels[i].getName(), 388550b8db03c0bb1b006d2ff63d4febda3db16002fChris Lattner isClassMethodList)); 38920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Method = llvm::ConstantExpr::getBitCast(Method, 39020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::PointerType::getUnqual(IMPTy)); 39120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(Method); 39220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.push_back(llvm::ConstantStruct::get(ObjCMethodTy, Elements)); 39320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 39420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 39520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Array of method structures 39620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ArrayType *ObjCMethodArrayTy = llvm::ArrayType::get(ObjCMethodTy, 397a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner MethodSels.size()); 39820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MethodArray = llvm::ConstantArray::get(ObjCMethodArrayTy, 399fba676396703e87a5034e5f308aa30a633468f66Chris Lattner Methods); 40020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 40120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Structure containing list pointer, array and array count 40220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::SmallVector<const llvm::Type*, 16> ObjCMethodListFields; 40320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::PATypeHolder OpaqueNextTy = llvm::OpaqueType::get(); 40420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Type *NextPtrTy = llvm::PointerType::getUnqual(OpaqueNextTy); 40520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StructType *ObjCMethodListTy = llvm::StructType::get(NextPtrTy, 40620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IntTy, 40720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ObjCMethodArrayTy, 40820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 40920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Refine next pointer type to concrete type 41020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::cast<llvm::OpaqueType>( 41120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov OpaqueNextTy.get())->refineAbstractTypeTo(ObjCMethodListTy); 41220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ObjCMethodListTy = llvm::cast<llvm::StructType>(OpaqueNextTy.get()); 41320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 41420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.clear(); 41520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.push_back(llvm::ConstantPointerNull::get( 41620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::PointerType::getUnqual(ObjCMethodListTy))); 41720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.push_back(llvm::ConstantInt::get(llvm::Type::Int32Ty, 41820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov MethodTypes.size())); 41920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.push_back(MethodArray); 42020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 42120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an instance of the structure 42220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ObjCMethodListTy, Methods, ".objc_method_list"); 42320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 42420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 42520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// Generates an IvarList. Used in construction of a objc_class. 42620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::GenerateIvarList( 42720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarNames, 42820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarTypes, 42920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarOffsets) { 43020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Get the method structure type. 43120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StructType *ObjCIvarTy = llvm::StructType::get( 43220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 43320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 43420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IntTy, 43520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 43620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Ivars; 43720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 43820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (unsigned int i = 0, e = IvarNames.size() ; i < e ; i++) { 43920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 44020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back( llvm::ConstantExpr::getGetElementPtr(IvarNames[i], 44120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Zeros, 2)); 44220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back( llvm::ConstantExpr::getGetElementPtr(IvarTypes[i], 44320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Zeros, 2)); 44420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(IvarOffsets[i]); 44520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Ivars.push_back(llvm::ConstantStruct::get(ObjCIvarTy, Elements)); 44620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 44720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 44820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Array of method structures 44920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ArrayType *ObjCIvarArrayTy = llvm::ArrayType::get(ObjCIvarTy, 45020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IvarNames.size()); 45120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 45220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 45320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 45420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(llvm::ConstantInt::get( 45520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::cast<llvm::IntegerType>(IntTy), (int)IvarNames.size())); 45620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(llvm::ConstantArray::get(ObjCIvarArrayTy, Ivars)); 45720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Structure containing array and array count 45820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StructType *ObjCIvarListTy = llvm::StructType::get(IntTy, 45920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ObjCIvarArrayTy, 46020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 46120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 46220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an instance of the structure 46320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ObjCIvarListTy, Elements, ".objc_ivar_list"); 4640f984268b05edab2cc555a427c441baa9c252658Chris Lattner} 4650f984268b05edab2cc555a427c441baa9c252658Chris Lattner 46620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// Generate a class structure 46720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::GenerateClassStructure( 46820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MetaClass, 46920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SuperClass, 47020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov unsigned info, 471d002cc6fc5b72bf00e3b7b4571ccf0f23c789b4bChris Lattner const char *Name, 47220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Version, 47320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *InstanceSize, 47420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *IVars, 47520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Methods, 47620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Protocols) { 47720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Set up the class structure 47820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Note: Several of these are char*s when they should be ids. This is 47920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // because the runtime performs this translation on load. 48020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StructType *ClassTy = llvm::StructType::get( 48120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // class_pointer 48220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // super_class 48320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // name 48420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov LongTy, // version 48520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov LongTy, // info 48620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov LongTy, // instance_size 48720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IVars->getType(), // ivars 48820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods->getType(), // methods 48920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // These are all filled in by the runtime, so we pretend 49020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // dtable 49120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // subclass_list 49220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // sibling_class 49320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // protocols 49420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // gc_object_type 49520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 49620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Zero = llvm::ConstantInt::get(LongTy, 0); 49720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *NullP = 49820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ConstantPointerNull::get(llvm::cast<llvm::PointerType>(PtrTy)); 49920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Fill in the structure 50020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 50120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(llvm::ConstantExpr::getBitCast(MetaClass, PtrToInt8Ty)); 50220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(SuperClass); 503d002cc6fc5b72bf00e3b7b4571ccf0f23c789b4bChris Lattner Elements.push_back(MakeConstantString(Name, ".class_name")); 50420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(Zero); 50520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(llvm::ConstantInt::get(LongTy, info)); 50620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(InstanceSize); 50720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(IVars); 50820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(Methods); 50920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NullP); 51020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NullP); 51120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NullP); 51220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(llvm::ConstantExpr::getBitCast(Protocols, PtrTy)); 51320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NullP); 51420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an instance of the structure 5151565e0364b05d163640dd2b6feed43bae67df4fdChris Lattner return MakeGlobal(ClassTy, Elements, SymbolNameForClass(Name)); 51620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 51720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 51820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::GenerateProtocolMethodList( 51920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &MethodNames, 52020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &MethodTypes) { 52120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Get the method structure type. 52220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StructType *ObjCMethodDescTy = llvm::StructType::get( 52320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // Really a selector, but the runtime does the casting for us. 52420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 52520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 52620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Methods; 52720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 52820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (unsigned int i = 0, e = MethodTypes.size() ; i < e ; i++) { 52920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 53020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back( llvm::ConstantExpr::getGetElementPtr(MethodNames[i], 53120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Zeros, 2)); 53220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back( 53320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ConstantExpr::getGetElementPtr(MethodTypes[i], Zeros, 2)); 53420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.push_back(llvm::ConstantStruct::get(ObjCMethodDescTy, Elements)); 53520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 53620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ArrayType *ObjCMethodArrayTy = llvm::ArrayType::get(ObjCMethodDescTy, 53720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov MethodNames.size()); 53820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Array = llvm::ConstantArray::get(ObjCMethodArrayTy, Methods); 53920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StructType *ObjCMethodDescListTy = llvm::StructType::get( 54020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IntTy, ObjCMethodArrayTy, NULL); 54120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.clear(); 54220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.push_back(llvm::ConstantInt::get(IntTy, MethodNames.size())); 54320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.push_back(Array); 54420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ObjCMethodDescListTy, Methods, ".objc_method_list"); 54520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 54620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// Create the protocol list structure used in classes, categories and so on 54720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::GenerateProtocolList( 54820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<std::string> &Protocols) { 54920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ArrayType *ProtocolArrayTy = llvm::ArrayType::get(PtrToInt8Ty, 55020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Protocols.size()); 55120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StructType *ProtocolListTy = llvm::StructType::get( 55220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, //Should be a recurisve pointer, but it's always NULL here. 55320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov LongTy,//FIXME: Should be size_t 55420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ProtocolArrayTy, 55520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 55620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 55720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (const std::string *iter = Protocols.begin(), *endIter = Protocols.end(); 55820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter != endIter ; iter++) { 55920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Ptr = 56020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ConstantExpr::getBitCast(ExistingProtocols[*iter], PtrToInt8Ty); 56120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(Ptr); 56220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 56320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant * ProtocolArray = llvm::ConstantArray::get(ProtocolArrayTy, 56420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements); 56520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 56620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 56720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(llvm::ConstantInt::get( 56820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::cast<llvm::IntegerType>(LongTy), Protocols.size())); 56920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ProtocolArray); 57020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ProtocolListTy, Elements, ".objc_protocol_list"); 57120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 57220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 57385e356825b291f86c6e926638914222b834b71a3Chris Lattnerllvm::Value *CGObjCGNU::GenerateProtocolRef(llvm::IRBuilder<> &Builder, const 57420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov char *ProtocolName) { 57520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return ExistingProtocols[ProtocolName]; 57620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 57720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 57820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovvoid CGObjCGNU::GenerateProtocol(const char *ProtocolName, 57920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<std::string> &Protocols, 58020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &InstanceMethodNames, 58120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &InstanceMethodTypes, 58220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &ClassMethodNames, 58320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &ClassMethodTypes) { 58420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 58520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ProtocolList = GenerateProtocolList(Protocols); 58620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *InstanceMethodList = 58720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov GenerateProtocolMethodList(InstanceMethodNames, InstanceMethodTypes); 58820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ClassMethodList = 58920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov GenerateProtocolMethodList(ClassMethodNames, ClassMethodTypes); 59020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Protocols are objects containing lists of the methods implemented and 59120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // protocols adopted. 59220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StructType *ProtocolTy = llvm::StructType::get(IdTy, 59320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 59420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ProtocolList->getType(), 59520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov InstanceMethodList->getType(), 59620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ClassMethodList->getType(), 59720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 59820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 59920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // The isa pointer must be set to a magic number so the runtime knows it's 60020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // the correct layout. 60120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(llvm::ConstantExpr::getIntToPtr( 60220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ConstantInt::get(llvm::Type::Int32Ty, ProtocolVersion), IdTy)); 60320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(MakeConstantString(ProtocolName, ".objc_protocol_name")); 60420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ProtocolList); 60520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(InstanceMethodList); 60620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ClassMethodList); 60720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ExistingProtocols[ProtocolName] = 60820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ConstantExpr::getBitCast(MakeGlobal(ProtocolTy, Elements, 60920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ".objc_protocol"), IdTy); 61020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 61120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 61220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovvoid CGObjCGNU::GenerateCategory( 61320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const char *ClassName, 61420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const char *CategoryName, 615a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner const llvm::SmallVectorImpl<Selector> &InstanceMethodSels, 61620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &InstanceMethodTypes, 617a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner const llvm::SmallVectorImpl<Selector> &ClassMethodSels, 61820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &ClassMethodTypes, 61920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<std::string> &Protocols) { 62020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 62120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(MakeConstantString(CategoryName)); 62220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(MakeConstantString(ClassName)); 62320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Instance method list 62420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(llvm::ConstantExpr::getBitCast(GenerateMethodList( 625a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner ClassName, CategoryName, InstanceMethodSels, InstanceMethodTypes, 62620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov false), PtrTy)); 62720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Class method list 62820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(llvm::ConstantExpr::getBitCast(GenerateMethodList( 629a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner ClassName, CategoryName, ClassMethodSels, ClassMethodTypes, true), 63020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy)); 63120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Protocol list 63220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(llvm::ConstantExpr::getBitCast( 63320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov GenerateProtocolList(Protocols), PtrTy)); 63420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Categories.push_back(llvm::ConstantExpr::getBitCast( 63520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov MakeGlobal(llvm::StructType::get(PtrToInt8Ty, PtrToInt8Ty, PtrTy, 63620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, PtrTy, NULL), Elements), PtrTy)); 63720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 63820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovvoid CGObjCGNU::GenerateClass( 63920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const char *ClassName, 64020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const char *SuperClassName, 64120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const int instanceSize, 64220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarNames, 64320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarTypes, 64420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarOffsets, 645a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner const llvm::SmallVectorImpl<Selector> &InstanceMethodSels, 64620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &InstanceMethodTypes, 647a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner const llvm::SmallVectorImpl<Selector> &ClassMethodSels, 64820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &ClassMethodTypes, 64920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<std::string> &Protocols) { 65020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Get the superclass pointer. 65120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SuperClass; 65220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov if (SuperClassName) { 65320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov SuperClass = MakeConstantString(SuperClassName, ".super_class_name"); 65420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } else { 65520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov SuperClass = llvm::ConstantPointerNull::get( 65620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::cast<llvm::PointerType>(PtrToInt8Ty)); 65720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 65820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Empty vector used to construct empty method lists 65920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::SmallVector<llvm::Constant*, 1> empty; 66020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Generate the method and instance variable lists 66120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MethodList = GenerateMethodList(ClassName, "", 662a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner InstanceMethodSels, InstanceMethodTypes, false); 66320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ClassMethodList = GenerateMethodList(ClassName, "", 664a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner ClassMethodSels, ClassMethodTypes, true); 66520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *IvarList = GenerateIvarList(IvarNames, IvarTypes, 66620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IvarOffsets); 66720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov //Generate metaclass for class methods 66820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MetaClassStruct = GenerateClassStructure(NULLPtr, 6691565e0364b05d163640dd2b6feed43bae67df4fdChris Lattner NULLPtr, 0x2L, /*name*/"", 0, Zeros[0], GenerateIvarList( 67020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov empty, empty, empty), ClassMethodList, NULLPtr); 67120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Generate the class structure 67220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ClassStruct = GenerateClassStructure(MetaClassStruct, 673d002cc6fc5b72bf00e3b7b4571ccf0f23c789b4bChris Lattner SuperClass, 0x1L, ClassName, 0, 67420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ConstantInt::get(llvm::Type::Int32Ty, instanceSize), IvarList, 67520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov MethodList, GenerateProtocolList(Protocols)); 67620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Add class structure to list to be added to the symtab later 67720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ClassStruct = llvm::ConstantExpr::getBitCast(ClassStruct, PtrToInt8Ty); 67820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.push_back(ClassStruct); 67920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 68020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 68120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Function *CGObjCGNU::ModuleInitFunction() { 68220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Only emit an ObjC load function if no Objective-C stuff has been called 68320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov if (Classes.empty() && Categories.empty() && ConstantStrings.empty() && 68420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ExistingProtocols.empty() && TypedSelectors.empty() && 6855f58b911304f7d114f929d1726a09cd1c828a5ddAnton Korobeynikov UntypedSelectors.empty()) 68620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return NULL; 6871b8956e1ce4c5770982d6e59edb16979b500677aEli Friedman 6881b8956e1ce4c5770982d6e59edb16979b500677aEli Friedman // Name the ObjC types to make the IR a bit easier to read 6891b8956e1ce4c5770982d6e59edb16979b500677aEli Friedman TheModule.addTypeName(".objc_selector", SelectorTy); 6901b8956e1ce4c5770982d6e59edb16979b500677aEli Friedman TheModule.addTypeName(".objc_id", IdTy); 6911b8956e1ce4c5770982d6e59edb16979b500677aEli Friedman TheModule.addTypeName(".objc_imp", IMPTy); 6921b8956e1ce4c5770982d6e59edb16979b500677aEli Friedman 69320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 69420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Generate statics list: 69520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ArrayType *StaticsArrayTy = llvm::ArrayType::get(PtrToInt8Ty, 69620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ConstantStrings.size() + 1); 69720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ConstantStrings.push_back(NULLPtr); 69820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(MakeConstantString("NSConstantString", 69920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ".objc_static_class_name")); 70020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(llvm::ConstantArray::get(StaticsArrayTy, ConstantStrings)); 70120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StructType *StaticsListTy = 70220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StructType::get(PtrToInt8Ty, StaticsArrayTy, NULL); 703630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner llvm::Type *StaticsListPtrTy = llvm::PointerType::getUnqual(StaticsListTy); 70420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Statics = 70520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov MakeGlobal(StaticsListTy, Elements, ".objc_statics"); 7064e0b2641d8aa8da8eb001b959940a9ec68f45f0dChris Lattner llvm::ArrayType *StaticsListArrayTy = 707630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner llvm::ArrayType::get(StaticsListPtrTy, 2); 7084e0b2641d8aa8da8eb001b959940a9ec68f45f0dChris Lattner Elements.clear(); 7094e0b2641d8aa8da8eb001b959940a9ec68f45f0dChris Lattner Elements.push_back(Statics); 710630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner Elements.push_back(llvm::Constant::getNullValue(StaticsListPtrTy)); 7114e0b2641d8aa8da8eb001b959940a9ec68f45f0dChris Lattner Statics = MakeGlobal(StaticsListArrayTy, Elements, ".objc_statics_ptr"); 71220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Statics = llvm::ConstantExpr::getBitCast(Statics, PtrTy); 71320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Array of classes, categories, and constant objects 71420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ArrayType *ClassListTy = llvm::ArrayType::get(PtrToInt8Ty, 71520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.size() + Categories.size() + 2); 716630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner llvm::StructType *SymTabTy = llvm::StructType::get(LongTy, SelectorTy, 717630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner llvm::Type::Int16Ty, 718630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner llvm::Type::Int16Ty, 719630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner ClassListTy, NULL); 72020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 72120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 72220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Pointer to an array of selectors used in this module. 72320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Selectors; 72420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (std::map<TypedSelector, llvm::GlobalAlias*>::iterator 72520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter = TypedSelectors.begin(), iterEnd = TypedSelectors.end(); 72620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter != iterEnd ; ++iter) { 727630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner Elements.push_back(MakeConstantString(iter->first.first, ".objc_sel_name")); 728630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner Elements.push_back(MakeConstantString(iter->first.second, 729630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner ".objc_sel_types")); 73020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Selectors.push_back(llvm::ConstantStruct::get(SelStructTy, Elements)); 73120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 73220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 73320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (llvm::StringMap<llvm::GlobalAlias*>::iterator 73420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter = UntypedSelectors.begin(), iterEnd = UntypedSelectors.end(); 735630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner iter != iterEnd; ++iter) { 73620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back( 737630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner MakeConstantString(iter->getKeyData(), ".objc_sel_name")); 73820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 73920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Selectors.push_back(llvm::ConstantStruct::get(SelStructTy, Elements)); 74020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 74120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 74220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 74320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 74420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Selectors.push_back(llvm::ConstantStruct::get(SelStructTy, Elements)); 74520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 74620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Number of static selectors 74720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(llvm::ConstantInt::get(LongTy, Selectors.size() )); 74820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SelectorList = MakeGlobal( 74920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ArrayType::get(SelStructTy, Selectors.size()), Selectors, 75020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ".objc_selector_list"); 75120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(llvm::ConstantExpr::getBitCast(SelectorList, SelectorTy)); 75220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 75320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Now that all of the static selectors exist, create pointers to them. 75420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov int index = 0; 75520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (std::map<TypedSelector, llvm::GlobalAlias*>::iterator 75620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter=TypedSelectors.begin(), iterEnd =TypedSelectors.end(); 75720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter != iterEnd; ++iter) { 75820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Idxs[] = {Zeros[0], 75920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ConstantInt::get(llvm::Type::Int32Ty, index++), Zeros[0]}; 76020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::GlobalVariable *SelPtr = new llvm::GlobalVariable(SelectorTy, true, 76120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::GlobalValue::InternalLinkage, 76220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ConstantExpr::getGetElementPtr(SelectorList, Idxs, 2), 76320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ".objc_sel_ptr", &TheModule); 76420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov (*iter).second->setAliasee(SelPtr); 76520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 76620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (llvm::StringMap<llvm::GlobalAlias*>::iterator 76720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter=UntypedSelectors.begin(), iterEnd = UntypedSelectors.end(); 76820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter != iterEnd; iter++) { 76920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Idxs[] = {Zeros[0], 77020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ConstantInt::get(llvm::Type::Int32Ty, index++), Zeros[0]}; 77120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::GlobalVariable *SelPtr = new llvm::GlobalVariable(SelectorTy, true, 77220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::GlobalValue::InternalLinkage, 77320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ConstantExpr::getGetElementPtr(SelectorList, Idxs, 2), 77420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ".objc_sel_ptr", &TheModule); 77520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov (*iter).second->setAliasee(SelPtr); 77620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 77720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Number of classes defined. 77820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(llvm::ConstantInt::get(llvm::Type::Int16Ty, 77920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.size())); 78020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Number of categories defined 78120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(llvm::ConstantInt::get(llvm::Type::Int16Ty, 78220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Categories.size())); 78320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an array of classes, then categories, then static object instances 78420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.insert(Classes.end(), Categories.begin(), Categories.end()); 78520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // NULL-terminated list of static object instances (mainly constant strings) 78620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.push_back(Statics); 78720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.push_back(NULLPtr); 78820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ClassList = llvm::ConstantArray::get(ClassListTy, Classes); 78920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ClassList); 79020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Construct the symbol table 79120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SymTab= MakeGlobal(SymTabTy, Elements); 79220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 79320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // The symbol table is contained in a module which has some version-checking 79420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // constants 79520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StructType * ModuleTy = llvm::StructType::get(LongTy, LongTy, 79620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, llvm::PointerType::getUnqual(SymTabTy), NULL); 79720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 79820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Runtime version used for compatibility checking. 79920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(llvm::ConstantInt::get(LongTy, RuntimeVersion)); 80020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov //FIXME: Should be sizeof(ModuleTy) 80120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(llvm::ConstantInt::get(LongTy, 16)); 80220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov //FIXME: Should be the path to the file where this module was declared 80320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 80420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(SymTab); 80520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Value *Module = MakeGlobal(ModuleTy, Elements); 80620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 80720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create the load function calling the runtime entry point with the module 80820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // structure 80920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<const llvm::Type*> VoidArgs; 81020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Function * LoadFunction = llvm::Function::Create( 81120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::FunctionType::get(llvm::Type::VoidTy, VoidArgs, false), 81220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::GlobalValue::InternalLinkage, ".objc_load_function", 81320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov &TheModule); 81420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::BasicBlock *EntryBB = llvm::BasicBlock::Create("entry", LoadFunction); 81585e356825b291f86c6e926638914222b834b71a3Chris Lattner llvm::IRBuilder<> Builder; 81620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Builder.SetInsertPoint(EntryBB); 81720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Value *Register = TheModule.getOrInsertFunction("__objc_exec_class", 81820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Type::VoidTy, llvm::PointerType::getUnqual(ModuleTy), NULL); 81920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Builder.CreateCall(Register, Module); 82020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Builder.CreateRetVoid(); 82120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return LoadFunction; 82220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 823391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattnerllvm::Function *CGObjCGNU::MethodPreamble( 82420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const std::string &ClassName, 82520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const std::string &CategoryName, 82620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const std::string &MethodName, 827391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner const llvm::Type *ReturnTy, 828391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner const llvm::Type *SelfTy, 829391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner const llvm::Type **ArgTy, 830391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner unsigned ArgC, 83120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov bool isClassMethod, 832391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner bool isVarArg) { 833391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner std::vector<const llvm::Type*> Args; 8348fdf32822be2238aa7db62d40e75b168b637ab7dChris Lattner if (!ReturnTy->isSingleValueType() && ReturnTy != llvm::Type::VoidTy) { 83520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Args.push_back(llvm::PointerType::getUnqual(ReturnTy)); 83620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ReturnTy = llvm::Type::VoidTy; 83720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 838391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner Args.push_back(SelfTy); 839391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner Args.push_back(SelectorTy); 840391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner Args.insert(Args.end(), ArgTy, ArgTy+ArgC); 841391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner 842391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner llvm::FunctionType *MethodTy = llvm::FunctionType::get(ReturnTy, 843391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner Args, 844391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner isVarArg); 84520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::string FunctionName = SymbolNameForMethod(ClassName, CategoryName, 84620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov MethodName, isClassMethod); 84720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 848984d0b414bc76d3530b9bc55a5a55834ba76c607Gabor Greif llvm::Function *Method = llvm::Function::Create(MethodTy, 849391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner llvm::GlobalValue::InternalLinkage, 85020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov FunctionName, 851391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner &TheModule); 852391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner llvm::Function::arg_iterator AI = Method->arg_begin(); 85320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Name the struct return argument. 85420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // FIXME: This is probably the wrong test. 85520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov if (!ReturnTy->isFirstClassType() && ReturnTy != llvm::Type::VoidTy) { 85620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov AI->setName("agg.result"); 85720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ++AI; 85820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 859391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner AI->setName("self"); 860391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner ++AI; 861391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner AI->setName("_cmd"); 862391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner return Method; 863391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner} 864391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner 865c17a4d3b16a2624a76de5d7508805534545bd3bfDaniel DunbarCodeGen::CGObjCRuntime *CodeGen::CreateGNUObjCRuntime(CodeGen::CodeGenModule &CGM){ 866dce1406f1c1f572cfd61c494546572d63461c741Chris Lattner return new CGObjCGNU(CGM); 8670f984268b05edab2cc555a427c441baa9c252658Chris Lattner} 868