CGObjCGNU.cpp revision fba676396703e87a5034e5f308aa30a633468f66
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" 200f984268b05edab2cc555a427c441baa9c252658Chris Lattner#include "llvm/Module.h" 210f984268b05edab2cc555a427c441baa9c252658Chris Lattner#include "llvm/Support/Compiler.h" 2250b36741673258aaebcd3c7fe1260031901cae57Chris Lattner#include "llvm/Support/IRBuilder.h" 230f984268b05edab2cc555a427c441baa9c252658Chris Lattner#include "llvm/ADT/SmallVector.h" 2420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov#include "llvm/ADT/StringMap.h" 2520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov#include <map> 26dce1406f1c1f572cfd61c494546572d63461c741Chris Lattnerusing namespace clang; 2720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 28550b8db03c0bb1b006d2ff63d4febda3db16002fChris Lattner// FIXME: Remove THIS! 29550b8db03c0bb1b006d2ff63d4febda3db16002fChris Lattner#include "llvm/Analysis/ValueTracking.h" 30550b8db03c0bb1b006d2ff63d4febda3db16002fChris Lattnerstd::string getStringValue(llvm::Constant *C) { 31550b8db03c0bb1b006d2ff63d4febda3db16002fChris Lattner std::string R; 32550b8db03c0bb1b006d2ff63d4febda3db16002fChris Lattner bool V = GetConstantStringInfo(C, R); 33550b8db03c0bb1b006d2ff63d4febda3db16002fChris Lattner assert(V && "Couldn't convert string"); 34550b8db03c0bb1b006d2ff63d4febda3db16002fChris Lattner return R; 35550b8db03c0bb1b006d2ff63d4febda3db16002fChris Lattner} 36550b8db03c0bb1b006d2ff63d4febda3db16002fChris Lattner 3720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovusing llvm::dyn_cast; 3820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 3920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// The version of the runtime that this class targets. Must match the version 4020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// in the runtime. 4120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovstatic const int RuntimeVersion = 8; 4220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovstatic const int ProtocolVersion = 2; 430f984268b05edab2cc555a427c441baa9c252658Chris Lattner 440f984268b05edab2cc555a427c441baa9c252658Chris Lattnernamespace { 45dce1406f1c1f572cfd61c494546572d63461c741Chris Lattnerclass CGObjCGNU : public CodeGen::CGObjCRuntime { 460f984268b05edab2cc555a427c441baa9c252658Chris Lattnerprivate: 47dce1406f1c1f572cfd61c494546572d63461c741Chris Lattner CodeGen::CodeGenModule &CGM; 480f984268b05edab2cc555a427c441baa9c252658Chris Lattner llvm::Module &TheModule; 4920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::StructType *SelStructTy; 50391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner const llvm::Type *SelectorTy; 51391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner const llvm::Type *PtrToInt8Ty; 52391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner const llvm::Type *IMPTy; 53391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner const llvm::Type *IdTy; 54391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner const llvm::Type *IntTy; 55391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner const llvm::Type *PtrTy; 56391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner const llvm::Type *LongTy; 57391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner const llvm::Type *PtrToIntTy; 5820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Classes; 5920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Categories; 6020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> ConstantStrings; 6120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Function *LoadFunction; 6220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StringMap<llvm::Constant*> ExistingProtocols; 6320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov typedef std::pair<std::string, std::string> TypedSelector; 6420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::map<TypedSelector, llvm::GlobalAlias*> TypedSelectors; 6520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StringMap<llvm::GlobalAlias*> UntypedSelectors; 6620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Some zeros used for GEPs in lots of places. 6720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Zeros[2]; 6820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *NULLPtr; 6920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovprivate: 7020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateIvarList( 7120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarNames, 7220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarTypes, 7320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarOffsets); 7420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateMethodList(const std::string &ClassName, 7520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const std::string &CategoryName, 7620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &MethodNames, 7720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &MethodTypes, 7820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov bool isClassMethodList); 7920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateProtocolList( 8020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<std::string> &Protocols); 8120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateClassStructure( 8220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MetaClass, 8320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SuperClass, 8420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov unsigned info, 85d002cc6fc5b72bf00e3b7b4571ccf0f23c789b4bChris Lattner const char *Name, 8620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Version, 8720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *InstanceSize, 8820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *IVars, 8920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Methods, 9020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Protocols); 9120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateProtocolMethodList( 9220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &MethodNames, 9320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &MethodTypes); 9420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MakeConstantString(const std::string &Str, const std::string 9520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov &Name=""); 9620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MakeGlobal(const llvm::StructType *Ty, 9720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> &V, const std::string &Name=""); 9820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MakeGlobal(const llvm::ArrayType *Ty, 9920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> &V, const std::string &Name=""); 1000f984268b05edab2cc555a427c441baa9c252658Chris Lattnerpublic: 101dce1406f1c1f572cfd61c494546572d63461c741Chris Lattner CGObjCGNU(CodeGen::CodeGenModule &cgm); 10220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov virtual llvm::Constant *GenerateConstantString(const char *String, 10320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const size_t length); 10420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov virtual llvm::Value *GenerateMessageSend(llvm::IRBuilder &Builder, 1050f984268b05edab2cc555a427c441baa9c252658Chris Lattner const llvm::Type *ReturnTy, 106391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner llvm::Value *Sender, 1070f984268b05edab2cc555a427c441baa9c252658Chris Lattner llvm::Value *Receiver, 1089384c768e93f270118a30ce96546083a666da284Chris Lattner Selector Sel, 1090f984268b05edab2cc555a427c441baa9c252658Chris Lattner llvm::Value** ArgV, 1100f984268b05edab2cc555a427c441baa9c252658Chris Lattner unsigned ArgC); 11120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov virtual llvm::Value *GenerateMessageSendSuper(llvm::IRBuilder &Builder, 1128e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner const llvm::Type *ReturnTy, 1138e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner llvm::Value *Sender, 1148e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner const char *SuperClassName, 1158e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner llvm::Value *Receiver, 1168e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner Selector Sel, 1178e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner llvm::Value** ArgV, 1188e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner unsigned ArgC); 1199384c768e93f270118a30ce96546083a666da284Chris Lattner virtual llvm::Value *LookupClass(llvm::IRBuilder &Builder, 1209384c768e93f270118a30ce96546083a666da284Chris Lattner llvm::Value *ClassName); 12142ba3e7ba1d4f3fad4871af77ab68ae3514b8c7eChris Lattner virtual llvm::Value *GetSelector(llvm::IRBuilder &Builder, Selector Sel); 1228e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner 12320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov virtual llvm::Function *MethodPreamble( 12420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const std::string &ClassName, 12520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const std::string &CategoryName, 12620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const std::string &MethodName, 12720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::Type *ReturnTy, 12820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::Type *SelfTy, 12920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::Type **ArgTy, 13020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov unsigned ArgC, 13120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov bool isClassMethod, 13220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov bool isVarArg); 13320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov virtual void GenerateCategory(const char *ClassName, const char *CategoryName, 13420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &InstanceMethodNames, 13520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &InstanceMethodTypes, 13620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &ClassMethodNames, 13720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &ClassMethodTypes, 13820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<std::string> &Protocols); 13920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov virtual void GenerateClass( 14020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const char *ClassName, 14120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const char *SuperClassName, 14220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const int instanceSize, 14320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarNames, 14420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarTypes, 14520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarOffsets, 14620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &InstanceMethodNames, 14720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &InstanceMethodTypes, 14820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &ClassMethodNames, 14920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &ClassMethodTypes, 15020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<std::string> &Protocols); 15120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov virtual llvm::Value *GenerateProtocolRef(llvm::IRBuilder &Builder, const char 15220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov *ProtocolName); 15320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov virtual void GenerateProtocol(const char *ProtocolName, 15420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<std::string> &Protocols, 15520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &InstanceMethodNames, 15620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &InstanceMethodTypes, 15720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &ClassMethodNames, 15820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &ClassMethodTypes); 15920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov virtual llvm::Function *ModuleInitFunction(); 1600f984268b05edab2cc555a427c441baa9c252658Chris Lattner}; 1610f984268b05edab2cc555a427c441baa9c252658Chris Lattner} // end anonymous namespace 1620f984268b05edab2cc555a427c441baa9c252658Chris Lattner 16320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 16420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 16520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovstatic std::string SymbolNameForClass(const std::string &ClassName) { 16620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return ".objc_class_" + ClassName; 16720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 16820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 16920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovstatic std::string SymbolNameForMethod(const std::string &ClassName, const 17020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::string &CategoryName, const std::string &MethodName, bool isClassMethod) 17120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov{ 17220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return "._objc_method_" + ClassName +"("+CategoryName+")"+ 17320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov (isClassMethod ? "+" : "-") + MethodName; 17420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 17520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 176dce1406f1c1f572cfd61c494546572d63461c741Chris LattnerCGObjCGNU::CGObjCGNU(CodeGen::CodeGenModule &cgm) 177dce1406f1c1f572cfd61c494546572d63461c741Chris Lattner : CGM(cgm), TheModule(CGM.getModule()) { 178dce1406f1c1f572cfd61c494546572d63461c741Chris Lattner IntTy = CGM.getTypes().ConvertType(CGM.getContext().IntTy); 179dce1406f1c1f572cfd61c494546572d63461c741Chris Lattner LongTy = CGM.getTypes().ConvertType(CGM.getContext().LongTy); 180dce1406f1c1f572cfd61c494546572d63461c741Chris Lattner 18120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Zeros[0] = llvm::ConstantInt::get(llvm::Type::Int32Ty, 0); 18220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Zeros[1] = Zeros[0]; 18320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULLPtr = llvm::ConstantPointerNull::get( 18420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::PointerType::getUnqual(llvm::Type::Int8Ty)); 185391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner // C string type. Used in lots of places. 186391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner PtrToInt8Ty = 187391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner llvm::PointerType::getUnqual(llvm::Type::Int8Ty); 188391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner // Get the selector Type. 18920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov SelStructTy = llvm::StructType::get( 190391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner PtrToInt8Ty, 191391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner PtrToInt8Ty, 192391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner NULL); 193391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner SelectorTy = llvm::PointerType::getUnqual(SelStructTy); 194391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner PtrToIntTy = llvm::PointerType::getUnqual(IntTy); 195391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner PtrTy = PtrToInt8Ty; 196391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner 197391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner // Object type 198391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner llvm::PATypeHolder OpaqueObjTy = llvm::OpaqueType::get(); 199391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner llvm::Type *OpaqueIdTy = llvm::PointerType::getUnqual(OpaqueObjTy); 200391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner IdTy = llvm::StructType::get(OpaqueIdTy, NULL); 201391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner llvm::cast<llvm::OpaqueType>(OpaqueObjTy.get())->refineAbstractTypeTo(IdTy); 202391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner IdTy = llvm::cast<llvm::StructType>(OpaqueObjTy.get()); 203391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner IdTy = llvm::PointerType::getUnqual(IdTy); 204391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner 205391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner // IMP type 206391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner std::vector<const llvm::Type*> IMPArgs; 207391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner IMPArgs.push_back(IdTy); 208391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner IMPArgs.push_back(SelectorTy); 209391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner IMPTy = llvm::FunctionType::get(IdTy, IMPArgs, true); 21020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 21120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// This has to perform the lookup every time, since posing and related 21220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// techniques can modify the name -> class mapping. 21320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Value *CGObjCGNU::LookupClass(llvm::IRBuilder &Builder, 21420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Value *ClassName) { 21520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ClassLookupFn = 21620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov TheModule.getOrInsertFunction("objc_lookup_class", IdTy, PtrToInt8Ty, 21720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 21820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return Builder.CreateCall(ClassLookupFn, ClassName); 219391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner} 220391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner 2218e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner/// GetSelector - Return the pointer to the unique'd string for this selector. 2228e67b63530b4f39a48bc12d97376f373a6901279Chris Lattnerllvm::Value *CGObjCGNU::GetSelector(llvm::IRBuilder &Builder, Selector Sel) { 2238e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner // FIXME: uniquing on the string is wasteful, unique on Sel instead! 2248e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner llvm::GlobalAlias *&US = UntypedSelectors[Sel.getName()]; 2258e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner if (US == 0) 2268e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner US = new llvm::GlobalAlias(llvm::PointerType::getUnqual(SelectorTy), 2278e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner llvm::GlobalValue::InternalLinkage, 2288e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner ".objc_untyped_selector_alias", 2298e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner NULL, &TheModule); 2308e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner 2318e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner return Builder.CreateLoad(US); 2328e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner 2338e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner} 2348e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner 2355e7dcc62e4637591959f9c372f6c5258d0d263e0Chris Lattnerllvm::Constant *CGObjCGNU::MakeConstantString(const std::string &Str, 2365e7dcc62e4637591959f9c372f6c5258d0d263e0Chris Lattner const std::string &Name) { 23720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant * ConstStr = llvm::ConstantArray::get(Str); 23820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ConstStr = new llvm::GlobalVariable(ConstStr->getType(), true, 23920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::GlobalValue::InternalLinkage, 24020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ConstStr, Name, &TheModule); 24120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return llvm::ConstantExpr::getGetElementPtr(ConstStr, Zeros, 2); 24220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 24320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::MakeGlobal(const llvm::StructType *Ty, 24420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> &V, const std::string &Name) { 24520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *C = llvm::ConstantStruct::get(Ty, V); 24620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return new llvm::GlobalVariable(Ty, false, 24720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::GlobalValue::InternalLinkage, C, Name, &TheModule); 24820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 24920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::MakeGlobal(const llvm::ArrayType *Ty, 25020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> &V, const std::string &Name) { 25120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *C = llvm::ConstantArray::get(Ty, V); 25220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return new llvm::GlobalVariable(Ty, false, 25320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::GlobalValue::InternalLinkage, C, Name, &TheModule); 25420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 25520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 25620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// Generate an NSConstantString object. 25720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov//TODO: In case there are any crazy people still using the GNU runtime without 25820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov//an OpenStep implementation, this should let them select their own class for 25920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov//constant strings. 26020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::GenerateConstantString(const char *String, const 26120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov size_t length) { 26213fd7e5111032f54b538dd66d035b0ccc1f82467Chris Lattner std::string Str(String, String +length); 26320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Ivars; 26420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Ivars.push_back(NULLPtr); 26513fd7e5111032f54b538dd66d035b0ccc1f82467Chris Lattner Ivars.push_back(MakeConstantString(Str)); 26620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Ivars.push_back(llvm::ConstantInt::get(IntTy, length)); 26720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ObjCStr = MakeGlobal( 26820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StructType::get(PtrToInt8Ty, PtrToInt8Ty, IntTy, NULL), 26920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Ivars, ".objc_str"); 27020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ConstantStrings.push_back( 27120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ConstantExpr::getBitCast(ObjCStr, PtrToInt8Ty)); 27220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return ObjCStr; 27320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 27420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 27520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov///Generates a message send where the super is the receiver. This is a message 27620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov///send to self with special delivery semantics indicating which class's method 27720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov///should be called. 27820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Value *CGObjCGNU::GenerateMessageSendSuper(llvm::IRBuilder &Builder, 2798e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner const llvm::Type *ReturnTy, 2808e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner llvm::Value *Sender, 2818e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner const char *SuperClassName, 2828e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner llvm::Value *Receiver, 2838e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner Selector Sel, 2848e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner llvm::Value** ArgV, 2858e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner unsigned ArgC) { 28620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // TODO: This should be cached, not looked up every time. 28720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Value *ReceiverClass = LookupClass(Builder, 28820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov MakeConstantString(SuperClassName)); 2898e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner llvm::Value *cmd = GetSelector(Builder, Sel); 29020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<const llvm::Type*> impArgTypes; 29120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov impArgTypes.push_back(Receiver->getType()); 29220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov impArgTypes.push_back(SelectorTy); 29320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 29420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Avoid an explicit cast on the IMP by getting a version that has the right 29520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // return type. 29620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::FunctionType *impType = llvm::FunctionType::get(ReturnTy, impArgTypes, 29720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov true); 29820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Construct the structure used to look up the IMP 29920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StructType *ObjCSuperTy = llvm::StructType::get(Receiver->getType(), 30020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IdTy, NULL); 30120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Value *ObjCSuper = Builder.CreateAlloca(ObjCSuperTy); 3021e692ace08959399794363e77499b73da5494af9Eli Friedman // FIXME: volatility 30320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Builder.CreateStore(Receiver, Builder.CreateStructGEP(ObjCSuper, 0)); 30420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Builder.CreateStore(ReceiverClass, Builder.CreateStructGEP(ObjCSuper, 1)); 30520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 30620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Get the IMP 30720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *lookupFunction = 30820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov TheModule.getOrInsertFunction("objc_msg_lookup_super", 30920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::PointerType::getUnqual(impType), 31020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::PointerType::getUnqual(ObjCSuperTy), 31120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov SelectorTy, NULL); 31220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Value *lookupArgs[] = {ObjCSuper, cmd}; 31320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Value *imp = Builder.CreateCall(lookupFunction, lookupArgs, 31420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov lookupArgs+2); 31520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 31620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Call the method 31720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::SmallVector<llvm::Value*, 8> callArgs; 31820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov callArgs.push_back(Receiver); 31920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov callArgs.push_back(cmd); 32020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov callArgs.insert(callArgs.end(), ArgV, ArgV+ArgC); 32120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return Builder.CreateCall(imp, callArgs.begin(), callArgs.end()); 32220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 32320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 32420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// Generate code for a message send expression. 32520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Value *CGObjCGNU::GenerateMessageSend(llvm::IRBuilder &Builder, 3260f984268b05edab2cc555a427c441baa9c252658Chris Lattner const llvm::Type *ReturnTy, 327391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner llvm::Value *Sender, 3280f984268b05edab2cc555a427c441baa9c252658Chris Lattner llvm::Value *Receiver, 3299384c768e93f270118a30ce96546083a666da284Chris Lattner Selector Sel, 3300f984268b05edab2cc555a427c441baa9c252658Chris Lattner llvm::Value** ArgV, 3310f984268b05edab2cc555a427c441baa9c252658Chris Lattner unsigned ArgC) { 3329384c768e93f270118a30ce96546083a666da284Chris Lattner llvm::Value *cmd = GetSelector(Builder, Sel); 3330f984268b05edab2cc555a427c441baa9c252658Chris Lattner 3340f984268b05edab2cc555a427c441baa9c252658Chris Lattner // Look up the method implementation. 3350f984268b05edab2cc555a427c441baa9c252658Chris Lattner std::vector<const llvm::Type*> impArgTypes; 33620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::Type *RetTy; 33720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov //TODO: Revisit this when LLVM supports aggregate return types. 33820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov if (ReturnTy->isSingleValueType() && ReturnTy != llvm::Type::VoidTy) { 33920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov RetTy = ReturnTy; 34020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } else { 34120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // For struct returns allocate the space in the caller and pass it up to 34220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // the sender. 34320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov RetTy = llvm::Type::VoidTy; 34420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov impArgTypes.push_back(llvm::PointerType::getUnqual(ReturnTy)); 34520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 3460f984268b05edab2cc555a427c441baa9c252658Chris Lattner impArgTypes.push_back(Receiver->getType()); 347391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner impArgTypes.push_back(SelectorTy); 3480f984268b05edab2cc555a427c441baa9c252658Chris Lattner 3490f984268b05edab2cc555a427c441baa9c252658Chris Lattner // Avoid an explicit cast on the IMP by getting a version that has the right 3500f984268b05edab2cc555a427c441baa9c252658Chris Lattner // return type. 35120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::FunctionType *impType = llvm::FunctionType::get(RetTy, impArgTypes, 3520f984268b05edab2cc555a427c441baa9c252658Chris Lattner true); 3530f984268b05edab2cc555a427c441baa9c252658Chris Lattner 3540f984268b05edab2cc555a427c441baa9c252658Chris Lattner llvm::Constant *lookupFunction = 3550f984268b05edab2cc555a427c441baa9c252658Chris Lattner TheModule.getOrInsertFunction("objc_msg_lookup", 356391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner llvm::PointerType::getUnqual(impType), 357391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner Receiver->getType(), SelectorTy, NULL); 3583eae03e7d165f20a863a9a4d7122ba2a691ab16dChris Lattner llvm::Value *imp = Builder.CreateCall2(lookupFunction, Receiver, cmd); 3593eae03e7d165f20a863a9a4d7122ba2a691ab16dChris Lattner 3603eae03e7d165f20a863a9a4d7122ba2a691ab16dChris Lattner // Call the method. 36120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::SmallVector<llvm::Value*, 16> Args; 36220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov if (!ReturnTy->isSingleValueType()) { 36320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Value *Return = Builder.CreateAlloca(ReturnTy); 36420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Args.push_back(Return); 36520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 36620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Args.push_back(Receiver); 36720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Args.push_back(cmd); 36820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Args.insert(Args.end(), ArgV, ArgV+ArgC); 3698fdf32822be2238aa7db62d40e75b168b637ab7dChris Lattner if (!ReturnTy->isSingleValueType()) { 3708fdf32822be2238aa7db62d40e75b168b637ab7dChris Lattner Builder.CreateCall(imp, Args.begin(), Args.end()); 3718fdf32822be2238aa7db62d40e75b168b637ab7dChris Lattner return Args[0]; 3728fdf32822be2238aa7db62d40e75b168b637ab7dChris Lattner } 37320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return Builder.CreateCall(imp, Args.begin(), Args.end()); 37420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 37520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 37620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// Generates a MethodList. Used in construction of a objc_class and 37720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// objc_category structures. 37820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::GenerateMethodList(const std::string &ClassName, 37920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const std::string &CategoryName, 38020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &MethodNames, 38120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &MethodTypes, 38220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov bool isClassMethodList) { 38320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Get the method structure type. 38420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StructType *ObjCMethodTy = llvm::StructType::get( 38520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // Really a selector, but the runtime creates it us. 38620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // Method types 38720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::PointerType::getUnqual(IMPTy), //Method pointer 38820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 38920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Methods; 39020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 39120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (unsigned int i = 0, e = MethodTypes.size(); i < e; ++i) { 39220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 393fba676396703e87a5034e5f308aa30a633468f66Chris Lattner Elements.push_back(llvm::ConstantExpr::getGetElementPtr(MethodNames[i], 394fba676396703e87a5034e5f308aa30a633468f66Chris Lattner Zeros, 2)); 39520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back( 39620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ConstantExpr::getGetElementPtr(MethodTypes[i], Zeros, 2)); 39720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Method = 39820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov TheModule.getFunction(SymbolNameForMethod(ClassName, CategoryName, 399550b8db03c0bb1b006d2ff63d4febda3db16002fChris Lattner getStringValue(MethodNames[i]), 400550b8db03c0bb1b006d2ff63d4febda3db16002fChris Lattner isClassMethodList)); 40120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Method = llvm::ConstantExpr::getBitCast(Method, 40220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::PointerType::getUnqual(IMPTy)); 40320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(Method); 40420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.push_back(llvm::ConstantStruct::get(ObjCMethodTy, Elements)); 40520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 40620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 40720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Array of method structures 40820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ArrayType *ObjCMethodArrayTy = llvm::ArrayType::get(ObjCMethodTy, 409fba676396703e87a5034e5f308aa30a633468f66Chris Lattner MethodNames.size()); 41020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MethodArray = llvm::ConstantArray::get(ObjCMethodArrayTy, 411fba676396703e87a5034e5f308aa30a633468f66Chris Lattner Methods); 41220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 41320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Structure containing list pointer, array and array count 41420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::SmallVector<const llvm::Type*, 16> ObjCMethodListFields; 41520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::PATypeHolder OpaqueNextTy = llvm::OpaqueType::get(); 41620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Type *NextPtrTy = llvm::PointerType::getUnqual(OpaqueNextTy); 41720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StructType *ObjCMethodListTy = llvm::StructType::get(NextPtrTy, 41820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IntTy, 41920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ObjCMethodArrayTy, 42020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 42120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Refine next pointer type to concrete type 42220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::cast<llvm::OpaqueType>( 42320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov OpaqueNextTy.get())->refineAbstractTypeTo(ObjCMethodListTy); 42420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ObjCMethodListTy = llvm::cast<llvm::StructType>(OpaqueNextTy.get()); 42520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 42620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.clear(); 42720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.push_back(llvm::ConstantPointerNull::get( 42820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::PointerType::getUnqual(ObjCMethodListTy))); 42920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.push_back(llvm::ConstantInt::get(llvm::Type::Int32Ty, 43020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov MethodTypes.size())); 43120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.push_back(MethodArray); 43220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 43320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an instance of the structure 43420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ObjCMethodListTy, Methods, ".objc_method_list"); 43520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 43620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 43720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// Generates an IvarList. Used in construction of a objc_class. 43820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::GenerateIvarList( 43920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarNames, 44020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarTypes, 44120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarOffsets) { 44220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Get the method structure type. 44320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StructType *ObjCIvarTy = llvm::StructType::get( 44420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 44520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 44620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IntTy, 44720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 44820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Ivars; 44920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 45020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (unsigned int i = 0, e = IvarNames.size() ; i < e ; i++) { 45120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 45220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back( llvm::ConstantExpr::getGetElementPtr(IvarNames[i], 45320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Zeros, 2)); 45420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back( llvm::ConstantExpr::getGetElementPtr(IvarTypes[i], 45520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Zeros, 2)); 45620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(IvarOffsets[i]); 45720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Ivars.push_back(llvm::ConstantStruct::get(ObjCIvarTy, Elements)); 45820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 45920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 46020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Array of method structures 46120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ArrayType *ObjCIvarArrayTy = llvm::ArrayType::get(ObjCIvarTy, 46220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IvarNames.size()); 46320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 46420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 46520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 46620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(llvm::ConstantInt::get( 46720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::cast<llvm::IntegerType>(IntTy), (int)IvarNames.size())); 46820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(llvm::ConstantArray::get(ObjCIvarArrayTy, Ivars)); 46920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Structure containing array and array count 47020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StructType *ObjCIvarListTy = llvm::StructType::get(IntTy, 47120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ObjCIvarArrayTy, 47220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 47320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 47420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an instance of the structure 47520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ObjCIvarListTy, Elements, ".objc_ivar_list"); 4760f984268b05edab2cc555a427c441baa9c252658Chris Lattner} 4770f984268b05edab2cc555a427c441baa9c252658Chris Lattner 47820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// Generate a class structure 47920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::GenerateClassStructure( 48020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MetaClass, 48120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SuperClass, 48220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov unsigned info, 483d002cc6fc5b72bf00e3b7b4571ccf0f23c789b4bChris Lattner const char *Name, 48420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Version, 48520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *InstanceSize, 48620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *IVars, 48720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Methods, 48820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Protocols) { 48920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Set up the class structure 49020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Note: Several of these are char*s when they should be ids. This is 49120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // because the runtime performs this translation on load. 49220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StructType *ClassTy = llvm::StructType::get( 49320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // class_pointer 49420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // super_class 49520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // name 49620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov LongTy, // version 49720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov LongTy, // info 49820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov LongTy, // instance_size 49920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IVars->getType(), // ivars 50020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods->getType(), // methods 50120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // These are all filled in by the runtime, so we pretend 50220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // dtable 50320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // subclass_list 50420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // sibling_class 50520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // protocols 50620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // gc_object_type 50720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 50820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Zero = llvm::ConstantInt::get(LongTy, 0); 50920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *NullP = 51020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ConstantPointerNull::get(llvm::cast<llvm::PointerType>(PtrTy)); 51120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Fill in the structure 51220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 51320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(llvm::ConstantExpr::getBitCast(MetaClass, PtrToInt8Ty)); 51420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(SuperClass); 515d002cc6fc5b72bf00e3b7b4571ccf0f23c789b4bChris Lattner Elements.push_back(MakeConstantString(Name, ".class_name")); 51620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(Zero); 51720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(llvm::ConstantInt::get(LongTy, info)); 51820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(InstanceSize); 51920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(IVars); 52020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(Methods); 52120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NullP); 52220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NullP); 52320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NullP); 52420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(llvm::ConstantExpr::getBitCast(Protocols, PtrTy)); 52520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NullP); 52620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an instance of the structure 52720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ClassTy, Elements, 528d002cc6fc5b72bf00e3b7b4571ccf0f23c789b4bChris Lattner SymbolNameForClass(Name)); 52920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 53020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 53120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::GenerateProtocolMethodList( 53220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &MethodNames, 53320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &MethodTypes) { 53420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Get the method structure type. 53520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StructType *ObjCMethodDescTy = llvm::StructType::get( 53620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // Really a selector, but the runtime does the casting for us. 53720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 53820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 53920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Methods; 54020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 54120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (unsigned int i = 0, e = MethodTypes.size() ; i < e ; i++) { 54220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 54320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back( llvm::ConstantExpr::getGetElementPtr(MethodNames[i], 54420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Zeros, 2)); 54520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back( 54620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ConstantExpr::getGetElementPtr(MethodTypes[i], Zeros, 2)); 54720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.push_back(llvm::ConstantStruct::get(ObjCMethodDescTy, Elements)); 54820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 54920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ArrayType *ObjCMethodArrayTy = llvm::ArrayType::get(ObjCMethodDescTy, 55020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov MethodNames.size()); 55120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Array = llvm::ConstantArray::get(ObjCMethodArrayTy, Methods); 55220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StructType *ObjCMethodDescListTy = llvm::StructType::get( 55320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IntTy, ObjCMethodArrayTy, NULL); 55420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.clear(); 55520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.push_back(llvm::ConstantInt::get(IntTy, MethodNames.size())); 55620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.push_back(Array); 55720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ObjCMethodDescListTy, Methods, ".objc_method_list"); 55820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 55920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// Create the protocol list structure used in classes, categories and so on 56020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::GenerateProtocolList( 56120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<std::string> &Protocols) { 56220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ArrayType *ProtocolArrayTy = llvm::ArrayType::get(PtrToInt8Ty, 56320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Protocols.size()); 56420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StructType *ProtocolListTy = llvm::StructType::get( 56520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, //Should be a recurisve pointer, but it's always NULL here. 56620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov LongTy,//FIXME: Should be size_t 56720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ProtocolArrayTy, 56820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 56920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 57020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (const std::string *iter = Protocols.begin(), *endIter = Protocols.end(); 57120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter != endIter ; iter++) { 57220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Ptr = 57320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ConstantExpr::getBitCast(ExistingProtocols[*iter], PtrToInt8Ty); 57420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(Ptr); 57520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 57620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant * ProtocolArray = llvm::ConstantArray::get(ProtocolArrayTy, 57720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements); 57820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 57920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 58020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(llvm::ConstantInt::get( 58120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::cast<llvm::IntegerType>(LongTy), Protocols.size())); 58220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ProtocolArray); 58320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ProtocolListTy, Elements, ".objc_protocol_list"); 58420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 58520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 58620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Value *CGObjCGNU::GenerateProtocolRef(llvm::IRBuilder &Builder, const 58720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov char *ProtocolName) { 58820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return ExistingProtocols[ProtocolName]; 58920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 59020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 59120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovvoid CGObjCGNU::GenerateProtocol(const char *ProtocolName, 59220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<std::string> &Protocols, 59320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &InstanceMethodNames, 59420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &InstanceMethodTypes, 59520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &ClassMethodNames, 59620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &ClassMethodTypes) { 59720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 59820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ProtocolList = GenerateProtocolList(Protocols); 59920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *InstanceMethodList = 60020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov GenerateProtocolMethodList(InstanceMethodNames, InstanceMethodTypes); 60120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ClassMethodList = 60220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov GenerateProtocolMethodList(ClassMethodNames, ClassMethodTypes); 60320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Protocols are objects containing lists of the methods implemented and 60420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // protocols adopted. 60520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StructType *ProtocolTy = llvm::StructType::get(IdTy, 60620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 60720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ProtocolList->getType(), 60820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov InstanceMethodList->getType(), 60920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ClassMethodList->getType(), 61020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 61120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 61220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // The isa pointer must be set to a magic number so the runtime knows it's 61320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // the correct layout. 61420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(llvm::ConstantExpr::getIntToPtr( 61520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ConstantInt::get(llvm::Type::Int32Ty, ProtocolVersion), IdTy)); 61620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(MakeConstantString(ProtocolName, ".objc_protocol_name")); 61720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ProtocolList); 61820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(InstanceMethodList); 61920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ClassMethodList); 62020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ExistingProtocols[ProtocolName] = 62120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ConstantExpr::getBitCast(MakeGlobal(ProtocolTy, Elements, 62220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ".objc_protocol"), IdTy); 62320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 62420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 62520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovvoid CGObjCGNU::GenerateCategory( 62620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const char *ClassName, 62720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const char *CategoryName, 62820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &InstanceMethodNames, 62920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &InstanceMethodTypes, 63020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &ClassMethodNames, 63120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &ClassMethodTypes, 63220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<std::string> &Protocols) { 63320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 63420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(MakeConstantString(CategoryName)); 63520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(MakeConstantString(ClassName)); 63620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Instance method list 63720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(llvm::ConstantExpr::getBitCast(GenerateMethodList( 63820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ClassName, CategoryName, InstanceMethodNames, InstanceMethodTypes, 63920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov false), PtrTy)); 64020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Class method list 64120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(llvm::ConstantExpr::getBitCast(GenerateMethodList( 64220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ClassName, CategoryName, ClassMethodNames, ClassMethodTypes, true), 64320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy)); 64420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Protocol list 64520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(llvm::ConstantExpr::getBitCast( 64620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov GenerateProtocolList(Protocols), PtrTy)); 64720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Categories.push_back(llvm::ConstantExpr::getBitCast( 64820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov MakeGlobal(llvm::StructType::get(PtrToInt8Ty, PtrToInt8Ty, PtrTy, 64920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, PtrTy, NULL), Elements), PtrTy)); 65020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 65120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovvoid CGObjCGNU::GenerateClass( 65220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const char *ClassName, 65320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const char *SuperClassName, 65420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const int instanceSize, 65520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarNames, 65620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarTypes, 65720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarOffsets, 65820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &InstanceMethodNames, 65920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &InstanceMethodTypes, 66020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &ClassMethodNames, 66120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &ClassMethodTypes, 66220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<std::string> &Protocols) { 66320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Get the superclass pointer. 66420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SuperClass; 66520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov if (SuperClassName) { 66620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov SuperClass = MakeConstantString(SuperClassName, ".super_class_name"); 66720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } else { 66820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov SuperClass = llvm::ConstantPointerNull::get( 66920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::cast<llvm::PointerType>(PtrToInt8Ty)); 67020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 67120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Empty vector used to construct empty method lists 67220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::SmallVector<llvm::Constant*, 1> empty; 67320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Generate the method and instance variable lists 67420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MethodList = GenerateMethodList(ClassName, "", 67520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov InstanceMethodNames, InstanceMethodTypes, false); 67620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ClassMethodList = GenerateMethodList(ClassName, "", 67720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ClassMethodNames, ClassMethodTypes, true); 67820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *IvarList = GenerateIvarList(IvarNames, IvarTypes, 67920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IvarOffsets); 68020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov //Generate metaclass for class methods 68120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MetaClassStruct = GenerateClassStructure(NULLPtr, 682d002cc6fc5b72bf00e3b7b4571ccf0f23c789b4bChris Lattner NULLPtr, 0x2L, /*name*/0, 0, Zeros[0], GenerateIvarList( 68320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov empty, empty, empty), ClassMethodList, NULLPtr); 68420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Generate the class structure 68520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ClassStruct = GenerateClassStructure(MetaClassStruct, 686d002cc6fc5b72bf00e3b7b4571ccf0f23c789b4bChris Lattner SuperClass, 0x1L, ClassName, 0, 68720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ConstantInt::get(llvm::Type::Int32Ty, instanceSize), IvarList, 68820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov MethodList, GenerateProtocolList(Protocols)); 68920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Add class structure to list to be added to the symtab later 69020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ClassStruct = llvm::ConstantExpr::getBitCast(ClassStruct, PtrToInt8Ty); 69120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.push_back(ClassStruct); 69220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 69320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 69420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Function *CGObjCGNU::ModuleInitFunction() { 69520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Only emit an ObjC load function if no Objective-C stuff has been called 69620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov if (Classes.empty() && Categories.empty() && ConstantStrings.empty() && 69720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ExistingProtocols.empty() && TypedSelectors.empty() && 6985f58b911304f7d114f929d1726a09cd1c828a5ddAnton Korobeynikov UntypedSelectors.empty()) 69920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return NULL; 7001b8956e1ce4c5770982d6e59edb16979b500677aEli Friedman 7011b8956e1ce4c5770982d6e59edb16979b500677aEli Friedman // Name the ObjC types to make the IR a bit easier to read 7021b8956e1ce4c5770982d6e59edb16979b500677aEli Friedman TheModule.addTypeName(".objc_selector", SelectorTy); 7031b8956e1ce4c5770982d6e59edb16979b500677aEli Friedman TheModule.addTypeName(".objc_id", IdTy); 7041b8956e1ce4c5770982d6e59edb16979b500677aEli Friedman TheModule.addTypeName(".objc_imp", IMPTy); 7051b8956e1ce4c5770982d6e59edb16979b500677aEli Friedman 70620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 70720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Generate statics list: 70820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ArrayType *StaticsArrayTy = llvm::ArrayType::get(PtrToInt8Ty, 70920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ConstantStrings.size() + 1); 71020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ConstantStrings.push_back(NULLPtr); 71120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(MakeConstantString("NSConstantString", 71220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ".objc_static_class_name")); 71320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(llvm::ConstantArray::get(StaticsArrayTy, ConstantStrings)); 71420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StructType *StaticsListTy = 71520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StructType::get(PtrToInt8Ty, StaticsArrayTy, NULL); 716630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner llvm::Type *StaticsListPtrTy = llvm::PointerType::getUnqual(StaticsListTy); 71720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Statics = 71820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov MakeGlobal(StaticsListTy, Elements, ".objc_statics"); 7194e0b2641d8aa8da8eb001b959940a9ec68f45f0dChris Lattner llvm::ArrayType *StaticsListArrayTy = 720630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner llvm::ArrayType::get(StaticsListPtrTy, 2); 7214e0b2641d8aa8da8eb001b959940a9ec68f45f0dChris Lattner Elements.clear(); 7224e0b2641d8aa8da8eb001b959940a9ec68f45f0dChris Lattner Elements.push_back(Statics); 723630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner Elements.push_back(llvm::Constant::getNullValue(StaticsListPtrTy)); 7244e0b2641d8aa8da8eb001b959940a9ec68f45f0dChris Lattner Statics = MakeGlobal(StaticsListArrayTy, Elements, ".objc_statics_ptr"); 72520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Statics = llvm::ConstantExpr::getBitCast(Statics, PtrTy); 72620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Array of classes, categories, and constant objects 72720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ArrayType *ClassListTy = llvm::ArrayType::get(PtrToInt8Ty, 72820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.size() + Categories.size() + 2); 729630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner llvm::StructType *SymTabTy = llvm::StructType::get(LongTy, SelectorTy, 730630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner llvm::Type::Int16Ty, 731630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner llvm::Type::Int16Ty, 732630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner ClassListTy, NULL); 73320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 73420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 73520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Pointer to an array of selectors used in this module. 73620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Selectors; 73720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (std::map<TypedSelector, llvm::GlobalAlias*>::iterator 73820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter = TypedSelectors.begin(), iterEnd = TypedSelectors.end(); 73920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter != iterEnd ; ++iter) { 740630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner Elements.push_back(MakeConstantString(iter->first.first, ".objc_sel_name")); 741630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner Elements.push_back(MakeConstantString(iter->first.second, 742630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner ".objc_sel_types")); 74320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Selectors.push_back(llvm::ConstantStruct::get(SelStructTy, Elements)); 74420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 74520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 74620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (llvm::StringMap<llvm::GlobalAlias*>::iterator 74720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter = UntypedSelectors.begin(), iterEnd = UntypedSelectors.end(); 748630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner iter != iterEnd; ++iter) { 74920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back( 750630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner MakeConstantString(iter->getKeyData(), ".objc_sel_name")); 75120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 75220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Selectors.push_back(llvm::ConstantStruct::get(SelStructTy, Elements)); 75320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 75420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 75520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 75620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 75720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Selectors.push_back(llvm::ConstantStruct::get(SelStructTy, Elements)); 75820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 75920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Number of static selectors 76020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(llvm::ConstantInt::get(LongTy, Selectors.size() )); 76120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SelectorList = MakeGlobal( 76220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ArrayType::get(SelStructTy, Selectors.size()), Selectors, 76320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ".objc_selector_list"); 76420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(llvm::ConstantExpr::getBitCast(SelectorList, SelectorTy)); 76520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 76620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Now that all of the static selectors exist, create pointers to them. 76720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov int index = 0; 76820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (std::map<TypedSelector, llvm::GlobalAlias*>::iterator 76920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter=TypedSelectors.begin(), iterEnd =TypedSelectors.end(); 77020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter != iterEnd; ++iter) { 77120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Idxs[] = {Zeros[0], 77220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ConstantInt::get(llvm::Type::Int32Ty, index++), Zeros[0]}; 77320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::GlobalVariable *SelPtr = new llvm::GlobalVariable(SelectorTy, true, 77420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::GlobalValue::InternalLinkage, 77520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ConstantExpr::getGetElementPtr(SelectorList, Idxs, 2), 77620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ".objc_sel_ptr", &TheModule); 77720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov (*iter).second->setAliasee(SelPtr); 77820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 77920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (llvm::StringMap<llvm::GlobalAlias*>::iterator 78020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter=UntypedSelectors.begin(), iterEnd = UntypedSelectors.end(); 78120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter != iterEnd; iter++) { 78220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Idxs[] = {Zeros[0], 78320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ConstantInt::get(llvm::Type::Int32Ty, index++), Zeros[0]}; 78420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::GlobalVariable *SelPtr = new llvm::GlobalVariable(SelectorTy, true, 78520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::GlobalValue::InternalLinkage, 78620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ConstantExpr::getGetElementPtr(SelectorList, Idxs, 2), 78720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ".objc_sel_ptr", &TheModule); 78820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov (*iter).second->setAliasee(SelPtr); 78920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 79020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Number of classes defined. 79120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(llvm::ConstantInt::get(llvm::Type::Int16Ty, 79220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.size())); 79320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Number of categories defined 79420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(llvm::ConstantInt::get(llvm::Type::Int16Ty, 79520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Categories.size())); 79620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an array of classes, then categories, then static object instances 79720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.insert(Classes.end(), Categories.begin(), Categories.end()); 79820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // NULL-terminated list of static object instances (mainly constant strings) 79920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.push_back(Statics); 80020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.push_back(NULLPtr); 80120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ClassList = llvm::ConstantArray::get(ClassListTy, Classes); 80220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ClassList); 80320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Construct the symbol table 80420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SymTab= MakeGlobal(SymTabTy, Elements); 80520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 80620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // The symbol table is contained in a module which has some version-checking 80720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // constants 80820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StructType * ModuleTy = llvm::StructType::get(LongTy, LongTy, 80920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, llvm::PointerType::getUnqual(SymTabTy), NULL); 81020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 81120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Runtime version used for compatibility checking. 81220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(llvm::ConstantInt::get(LongTy, RuntimeVersion)); 81320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov //FIXME: Should be sizeof(ModuleTy) 81420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(llvm::ConstantInt::get(LongTy, 16)); 81520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov //FIXME: Should be the path to the file where this module was declared 81620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 81720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(SymTab); 81820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Value *Module = MakeGlobal(ModuleTy, Elements); 81920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 82020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create the load function calling the runtime entry point with the module 82120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // structure 82220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<const llvm::Type*> VoidArgs; 82320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Function * LoadFunction = llvm::Function::Create( 82420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::FunctionType::get(llvm::Type::VoidTy, VoidArgs, false), 82520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::GlobalValue::InternalLinkage, ".objc_load_function", 82620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov &TheModule); 82720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::BasicBlock *EntryBB = llvm::BasicBlock::Create("entry", LoadFunction); 82820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::IRBuilder Builder; 82920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Builder.SetInsertPoint(EntryBB); 83020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Value *Register = TheModule.getOrInsertFunction("__objc_exec_class", 83120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Type::VoidTy, llvm::PointerType::getUnqual(ModuleTy), NULL); 83220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Builder.CreateCall(Register, Module); 83320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Builder.CreateRetVoid(); 83420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return LoadFunction; 83520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 836391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattnerllvm::Function *CGObjCGNU::MethodPreamble( 83720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const std::string &ClassName, 83820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const std::string &CategoryName, 83920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const std::string &MethodName, 840391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner const llvm::Type *ReturnTy, 841391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner const llvm::Type *SelfTy, 842391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner const llvm::Type **ArgTy, 843391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner unsigned ArgC, 84420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov bool isClassMethod, 845391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner bool isVarArg) { 846391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner std::vector<const llvm::Type*> Args; 8478fdf32822be2238aa7db62d40e75b168b637ab7dChris Lattner if (!ReturnTy->isSingleValueType() && ReturnTy != llvm::Type::VoidTy) { 84820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Args.push_back(llvm::PointerType::getUnqual(ReturnTy)); 84920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ReturnTy = llvm::Type::VoidTy; 85020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 851391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner Args.push_back(SelfTy); 852391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner Args.push_back(SelectorTy); 853391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner Args.insert(Args.end(), ArgTy, ArgTy+ArgC); 854391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner 855391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner llvm::FunctionType *MethodTy = llvm::FunctionType::get(ReturnTy, 856391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner Args, 857391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner isVarArg); 85820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::string FunctionName = SymbolNameForMethod(ClassName, CategoryName, 85920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov MethodName, isClassMethod); 86020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 861984d0b414bc76d3530b9bc55a5a55834ba76c607Gabor Greif llvm::Function *Method = llvm::Function::Create(MethodTy, 862391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner llvm::GlobalValue::InternalLinkage, 86320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov FunctionName, 864391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner &TheModule); 865391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner llvm::Function::arg_iterator AI = Method->arg_begin(); 86620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Name the struct return argument. 86720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // FIXME: This is probably the wrong test. 86820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov if (!ReturnTy->isFirstClassType() && ReturnTy != llvm::Type::VoidTy) { 86920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov AI->setName("agg.result"); 87020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ++AI; 87120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 872391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner AI->setName("self"); 873391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner ++AI; 874391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner AI->setName("_cmd"); 875391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner return Method; 876391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner} 877391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner 878dce1406f1c1f572cfd61c494546572d63461c741Chris LattnerCodeGen::CGObjCRuntime *CodeGen::CreateObjCRuntime(CodeGen::CodeGenModule &CGM){ 879dce1406f1c1f572cfd61c494546572d63461c741Chris Lattner return new CGObjCGNU(CGM); 8800f984268b05edab2cc555a427c441baa9c252658Chris Lattner} 881