CGObjCGNU.cpp revision bb422ad4f449cd195a141309a886ff467baac5b2
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" 198f2926b73ed635afecd020da787af6a837601a2bDaniel Dunbar#include "CodeGenFunction.h" 205dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 21dce1406f1c1f572cfd61c494546572d63461c741Chris Lattner#include "clang/AST/ASTContext.h" 22e91593ef084479340582b2ba177b44be50a717b7Daniel Dunbar#include "clang/AST/Decl.h" 23af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar#include "clang/AST/DeclObjC.h" 242bebbf0acee55404de4b8846713b64429e744e8fDaniel Dunbar#include "clang/AST/RecordLayout.h" 2516f0049415ec596504891259e2a83e19871c0d52Chris Lattner#include "clang/AST/StmtObjC.h" 265dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 275dc0867af17b3bd6f567897433853b2b4767446cChris Lattner#include "llvm/Intrinsics.h" 280f984268b05edab2cc555a427c441baa9c252658Chris Lattner#include "llvm/Module.h" 290f984268b05edab2cc555a427c441baa9c252658Chris Lattner#include "llvm/ADT/SmallVector.h" 3020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov#include "llvm/ADT/StringMap.h" 317ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar#include "llvm/Support/Compiler.h" 327ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar#include "llvm/Target/TargetData.h" 335dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 3420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov#include <map> 35e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner 36e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner 37dce1406f1c1f572cfd61c494546572d63461c741Chris Lattnerusing namespace clang; 3846f45b9bec4a265ad8400a538e5ec3a5683617f1Daniel Dunbarusing namespace CodeGen; 3920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovusing llvm::dyn_cast; 4020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 4120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// The version of the runtime that this class targets. Must match the version 4220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// in the runtime. 4320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovstatic const int RuntimeVersion = 8; 4420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovstatic const int ProtocolVersion = 2; 450f984268b05edab2cc555a427c441baa9c252658Chris Lattner 460f984268b05edab2cc555a427c441baa9c252658Chris Lattnernamespace { 47dce1406f1c1f572cfd61c494546572d63461c741Chris Lattnerclass CGObjCGNU : public CodeGen::CGObjCRuntime { 480f984268b05edab2cc555a427c441baa9c252658Chris Lattnerprivate: 49dce1406f1c1f572cfd61c494546572d63461c741Chris Lattner CodeGen::CodeGenModule &CGM; 500f984268b05edab2cc555a427c441baa9c252658Chris Lattner llvm::Module &TheModule; 51e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::PointerType *SelectorTy; 52e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::PointerType *PtrToInt8Ty; 53b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian const llvm::FunctionType *IMPTy; 54e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::PointerType *IdTy; 55e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::IntegerType *IntTy; 56e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::PointerType *PtrTy; 57e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::IntegerType *LongTy; 58e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::PointerType *PtrToIntTy; 595efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar llvm::GlobalAlias *ClassPtrAlias; 605efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar llvm::GlobalAlias *MetaClassPtrAlias; 6120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Classes; 6220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Categories; 6320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> ConstantStrings; 6420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Function *LoadFunction; 6520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StringMap<llvm::Constant*> ExistingProtocols; 6620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov typedef std::pair<std::string, std::string> TypedSelector; 6720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::map<TypedSelector, llvm::GlobalAlias*> TypedSelectors; 6820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StringMap<llvm::GlobalAlias*> UntypedSelectors; 6920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Some zeros used for GEPs in lots of places. 7020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Zeros[2]; 7120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *NULLPtr; 7220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovprivate: 7320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateIvarList( 7420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarNames, 7520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarTypes, 7620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarOffsets); 7720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateMethodList(const std::string &ClassName, 7820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const std::string &CategoryName, 79a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner const llvm::SmallVectorImpl<Selector> &MethodSels, 8020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &MethodTypes, 8120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov bool isClassMethodList); 82f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::Constant *GenerateEmptyProtocol(const std::string &ProtocolName); 8320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateProtocolList( 8420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<std::string> &Protocols); 8520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateClassStructure( 8620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MetaClass, 8720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SuperClass, 8820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov unsigned info, 89d002cc6fc5b72bf00e3b7b4571ccf0f23c789b4bChris Lattner const char *Name, 9020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Version, 9120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *InstanceSize, 9220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *IVars, 9320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Methods, 9420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Protocols); 9520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateProtocolMethodList( 9620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &MethodNames, 9720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &MethodTypes); 9820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MakeConstantString(const std::string &Str, const std::string 9920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov &Name=""); 10020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MakeGlobal(const llvm::StructType *Ty, 10120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> &V, const std::string &Name=""); 10220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MakeGlobal(const llvm::ArrayType *Ty, 10320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> &V, const std::string &Name=""); 1040f984268b05edab2cc555a427c441baa9c252658Chris Lattnerpublic: 105dce1406f1c1f572cfd61c494546572d63461c741Chris Lattner CGObjCGNU(CodeGen::CodeGenModule &cgm); 10633fdb738a6c125f4c788733897021b7c1a062b0cSteve Naroff virtual llvm::Constant *GenerateConstantString(const ObjCStringLiteral *); 1078f2926b73ed635afecd020da787af6a837601a2bDaniel Dunbar virtual CodeGen::RValue 1088f2926b73ed635afecd020da787af6a837601a2bDaniel Dunbar GenerateMessageSend(CodeGen::CodeGenFunction &CGF, 1097f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar QualType ResultType, 1107f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar Selector Sel, 111f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar llvm::Value *Receiver, 11219cd87eb5fb3c197e631ce08fd52c446c4d4e8f1Daniel Dunbar bool IsClassMessage, 113df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian const CallArgList &CallArgs, 114df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian const ObjCMethodDecl *Method); 1158f2926b73ed635afecd020da787af6a837601a2bDaniel Dunbar virtual CodeGen::RValue 1168f2926b73ed635afecd020da787af6a837601a2bDaniel Dunbar GenerateMessageSendSuper(CodeGen::CodeGenFunction &CGF, 1177f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar QualType ResultType, 1187f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar Selector Sel, 119f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar const ObjCInterfaceDecl *Class, 1207ce77920a35060f1c8dd72e541e42ce296ccd168Fariborz Jahanian bool isCategoryImpl, 121f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar llvm::Value *Receiver, 12219cd87eb5fb3c197e631ce08fd52c446c4d4e8f1Daniel Dunbar bool IsClassMessage, 12319cd87eb5fb3c197e631ce08fd52c446c4d4e8f1Daniel Dunbar const CallArgList &CallArgs); 12445d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbar virtual llvm::Value *GetClass(CGBuilderTy &Builder, 125ddb2a3d55a24a1dbdf9152621642d9a4b4fc2f61Daniel Dunbar const ObjCInterfaceDecl *OID); 12645d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbar virtual llvm::Value *GetSelector(CGBuilderTy &Builder, Selector Sel); 127df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian virtual llvm::Value *GetSelector(CGBuilderTy &Builder, const ObjCMethodDecl 128df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian *Method); 1298e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner 130679a502d462ef819e6175b58e255ca3f3391e7cfFariborz Jahanian virtual llvm::Function *GenerateMethod(const ObjCMethodDecl *OMD, 131679a502d462ef819e6175b58e255ca3f3391e7cfFariborz Jahanian const ObjCContainerDecl *CD); 1327ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar virtual void GenerateCategory(const ObjCCategoryImplDecl *CMD); 1337ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar virtual void GenerateClass(const ObjCImplementationDecl *ClassDecl); 13445d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbar virtual llvm::Value *GenerateProtocolRef(CGBuilderTy &Builder, 135af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar const ObjCProtocolDecl *PD); 136af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar virtual void GenerateProtocol(const ObjCProtocolDecl *PD); 13720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov virtual llvm::Function *ModuleInitFunction(); 13849f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar virtual llvm::Function *GetPropertyGetFunction(); 13949f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar virtual llvm::Function *GetPropertySetFunction(); 1402abd89c039e835e84519a4cd8a7495899a70153dAnders Carlsson virtual llvm::Function *EnumerationMutationFunction(); 14164d5d6c5903157c521af496479d06dc26032d718Anders Carlsson 142bd71be4683c195260d5245118b1e13e6b2e20504Fariborz Jahanian virtual void EmitTryOrSynchronizedStmt(CodeGen::CodeGenFunction &CGF, 143bd71be4683c195260d5245118b1e13e6b2e20504Fariborz Jahanian const Stmt &S); 14464d5d6c5903157c521af496479d06dc26032d718Anders Carlsson virtual void EmitThrowStmt(CodeGen::CodeGenFunction &CGF, 14564d5d6c5903157c521af496479d06dc26032d718Anders Carlsson const ObjCAtThrowStmt &S); 1463e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian virtual llvm::Value * EmitObjCWeakRead(CodeGen::CodeGenFunction &CGF, 1476dc2317b59cb1180a59f6c283d96b7a5dfeb5307Fariborz Jahanian llvm::Value *AddrWeakObj); 1483e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian virtual void EmitObjCWeakAssign(CodeGen::CodeGenFunction &CGF, 1493e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian llvm::Value *src, llvm::Value *dst); 15058626500527695865683d1d65053743de8770b60Fariborz Jahanian virtual void EmitObjCGlobalAssign(CodeGen::CodeGenFunction &CGF, 15158626500527695865683d1d65053743de8770b60Fariborz Jahanian llvm::Value *src, llvm::Value *dest); 1527eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanian virtual void EmitObjCIvarAssign(CodeGen::CodeGenFunction &CGF, 1537eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanian llvm::Value *src, llvm::Value *dest); 15458626500527695865683d1d65053743de8770b60Fariborz Jahanian virtual void EmitObjCStrongCastAssign(CodeGen::CodeGenFunction &CGF, 15558626500527695865683d1d65053743de8770b60Fariborz Jahanian llvm::Value *src, llvm::Value *dest); 156598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian virtual LValue EmitObjCValueForIvar(CodeGen::CodeGenFunction &CGF, 157598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian QualType ObjectTy, 158598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian llvm::Value *BaseValue, 159598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian const ObjCIvarDecl *Ivar, 160598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian unsigned CVRQualifiers); 161f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian virtual llvm::Value *EmitIvarOffset(CodeGen::CodeGenFunction &CGF, 1622a03192a02dbf4fdff438d1e658356bde871aba4Daniel Dunbar const ObjCInterfaceDecl *Interface, 163f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian const ObjCIvarDecl *Ivar); 1640f984268b05edab2cc555a427c441baa9c252658Chris Lattner}; 1650f984268b05edab2cc555a427c441baa9c252658Chris Lattner} // end anonymous namespace 1660f984268b05edab2cc555a427c441baa9c252658Chris Lattner 16720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 16820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 16920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovstatic std::string SymbolNameForClass(const std::string &ClassName) { 170df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian return "___objc_class_name_" + ClassName; 17120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 17220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 17320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovstatic std::string SymbolNameForMethod(const std::string &ClassName, const 17420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::string &CategoryName, const std::string &MethodName, bool isClassMethod) 17520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov{ 17620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return "._objc_method_" + ClassName +"("+CategoryName+")"+ 17720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov (isClassMethod ? "+" : "-") + MethodName; 17820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 17920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 180dce1406f1c1f572cfd61c494546572d63461c741Chris LattnerCGObjCGNU::CGObjCGNU(CodeGen::CodeGenModule &cgm) 1815efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar : CGM(cgm), TheModule(CGM.getModule()), ClassPtrAlias(0), 1825efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar MetaClassPtrAlias(0) { 183e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner IntTy = cast<llvm::IntegerType>( 184e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner CGM.getTypes().ConvertType(CGM.getContext().IntTy)); 185e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner LongTy = cast<llvm::IntegerType>( 186e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner CGM.getTypes().ConvertType(CGM.getContext().LongTy)); 187dce1406f1c1f572cfd61c494546572d63461c741Chris Lattner 1883a5013cab1162118bd5bcf00a36c52e19a319f87Sebastian Redl Zeros[0] = llvm::ConstantInt::get(LongTy, 0); 18920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Zeros[1] = Zeros[0]; 19020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULLPtr = llvm::ConstantPointerNull::get( 19120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::PointerType::getUnqual(llvm::Type::Int8Ty)); 192391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner // C string type. Used in lots of places. 193391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner PtrToInt8Ty = 194391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner llvm::PointerType::getUnqual(llvm::Type::Int8Ty); 195391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner // Get the selector Type. 196e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner SelectorTy = cast<llvm::PointerType>( 197e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner CGM.getTypes().ConvertType(CGM.getContext().getObjCSelType())); 198e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner 199391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner PtrToIntTy = llvm::PointerType::getUnqual(IntTy); 200391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner PtrTy = PtrToInt8Ty; 201391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner 202391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner // Object type 203b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian IdTy = cast<llvm::PointerType>( 204b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CGM.getTypes().ConvertType(CGM.getContext().getObjCIdType())); 205391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner 206391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner // IMP type 207391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner std::vector<const llvm::Type*> IMPArgs; 208391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner IMPArgs.push_back(IdTy); 209391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner IMPArgs.push_back(SelectorTy); 210391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner IMPTy = llvm::FunctionType::get(IdTy, IMPArgs, true); 21120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 21220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// This has to perform the lookup every time, since posing and related 21320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// techniques can modify the name -> class mapping. 21445d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbarllvm::Value *CGObjCGNU::GetClass(CGBuilderTy &Builder, 215ddb2a3d55a24a1dbdf9152621642d9a4b4fc2f61Daniel Dunbar const ObjCInterfaceDecl *OID) { 216d9d22dd9c94618490dbffb0e2caf222530ca39d3Chris Lattner llvm::Value *ClassName = CGM.GetAddrOfConstantCString(OID->getNameAsString()); 217ddb2a3d55a24a1dbdf9152621642d9a4b4fc2f61Daniel Dunbar ClassName = Builder.CreateStructGEP(ClassName, 0); 218ddb2a3d55a24a1dbdf9152621642d9a4b4fc2f61Daniel Dunbar 21926c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian std::vector<const llvm::Type*> Params(1, PtrToInt8Ty); 22020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ClassLookupFn = 22126c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian CGM.CreateRuntimeFunction(llvm::FunctionType::get(IdTy, 22226c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian Params, 22326c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian true), 22426c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian "objc_lookup_class"); 22520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return Builder.CreateCall(ClassLookupFn, ClassName); 226391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner} 227391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner 22845d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbarllvm::Value *CGObjCGNU::GetSelector(CGBuilderTy &Builder, Selector Sel) { 229077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner llvm::GlobalAlias *&US = UntypedSelectors[Sel.getAsString()]; 2308e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner if (US == 0) 2318e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner US = new llvm::GlobalAlias(llvm::PointerType::getUnqual(SelectorTy), 2328e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner llvm::GlobalValue::InternalLinkage, 2338e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner ".objc_untyped_selector_alias", 2348e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner NULL, &TheModule); 2358e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner 2368e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner return Builder.CreateLoad(US); 237df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian} 238df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian 239df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanianllvm::Value *CGObjCGNU::GetSelector(CGBuilderTy &Builder, const ObjCMethodDecl 240df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian *Method) { 241df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian 242df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian std::string SelName = Method->getSelector().getAsString(); 243df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian std::string SelTypes; 244df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian CGM.getContext().getObjCEncodingForMethodDecl(Method, SelTypes); 245df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian // Typed selectors 246df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian TypedSelector Selector = TypedSelector(SelName, 247df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian SelTypes); 248df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian 249df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian // If it's already cached, return it. 250df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian if (TypedSelectors[Selector]) 251df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian { 252df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian return Builder.CreateLoad(TypedSelectors[Selector]); 253df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian } 254df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian 255df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian // If it isn't, cache it. 256df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian llvm::GlobalAlias *Sel = new llvm::GlobalAlias( 257df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian llvm::PointerType::getUnqual(SelectorTy), 258df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian llvm::GlobalValue::InternalLinkage, SelName, 259df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian NULL, &TheModule); 260df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian TypedSelectors[Selector] = Sel; 261df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian 262df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian return Builder.CreateLoad(Sel); 2638e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner} 2648e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner 2655e7dcc62e4637591959f9c372f6c5258d0d263e0Chris Lattnerllvm::Constant *CGObjCGNU::MakeConstantString(const std::string &Str, 2665e7dcc62e4637591959f9c372f6c5258d0d263e0Chris Lattner const std::string &Name) { 26720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant * ConstStr = llvm::ConstantArray::get(Str); 26820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ConstStr = new llvm::GlobalVariable(ConstStr->getType(), true, 26920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::GlobalValue::InternalLinkage, 27020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ConstStr, Name, &TheModule); 27120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return llvm::ConstantExpr::getGetElementPtr(ConstStr, Zeros, 2); 27220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 27320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::MakeGlobal(const llvm::StructType *Ty, 27420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> &V, const std::string &Name) { 27520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *C = llvm::ConstantStruct::get(Ty, V); 27620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return new llvm::GlobalVariable(Ty, false, 27720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::GlobalValue::InternalLinkage, C, Name, &TheModule); 27820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 27920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::MakeGlobal(const llvm::ArrayType *Ty, 28020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> &V, const std::string &Name) { 28120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *C = llvm::ConstantArray::get(Ty, V); 28220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return new llvm::GlobalVariable(Ty, false, 28320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::GlobalValue::InternalLinkage, C, Name, &TheModule); 28420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 28520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 28620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// Generate an NSConstantString object. 28720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov//TODO: In case there are any crazy people still using the GNU runtime without 28820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov//an OpenStep implementation, this should let them select their own class for 28920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov//constant strings. 29033fdb738a6c125f4c788733897021b7c1a062b0cSteve Naroffllvm::Constant *CGObjCGNU::GenerateConstantString(const ObjCStringLiteral *SL) { 29133fdb738a6c125f4c788733897021b7c1a062b0cSteve Naroff std::string Str(SL->getString()->getStrData(), 29233fdb738a6c125f4c788733897021b7c1a062b0cSteve Naroff SL->getString()->getByteLength()); 29320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Ivars; 29420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Ivars.push_back(NULLPtr); 29513fd7e5111032f54b538dd66d035b0ccc1f82467Chris Lattner Ivars.push_back(MakeConstantString(Str)); 296bbce49b9e5c6d7f05926b89f8e6fd235ae01c250Daniel Dunbar Ivars.push_back(llvm::ConstantInt::get(IntTy, Str.size())); 29720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ObjCStr = MakeGlobal( 29820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StructType::get(PtrToInt8Ty, PtrToInt8Ty, IntTy, NULL), 29920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Ivars, ".objc_str"); 30020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ConstantStrings.push_back( 30120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ConstantExpr::getBitCast(ObjCStr, PtrToInt8Ty)); 30220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return ObjCStr; 30320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 30420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 30520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov///Generates a message send where the super is the receiver. This is a message 30620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov///send to self with special delivery semantics indicating which class's method 30720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov///should be called. 3088f2926b73ed635afecd020da787af6a837601a2bDaniel DunbarCodeGen::RValue 3098f2926b73ed635afecd020da787af6a837601a2bDaniel DunbarCGObjCGNU::GenerateMessageSendSuper(CodeGen::CodeGenFunction &CGF, 3107f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar QualType ResultType, 3117f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar Selector Sel, 312f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar const ObjCInterfaceDecl *Class, 3137ce77920a35060f1c8dd72e541e42ce296ccd168Fariborz Jahanian bool isCategoryImpl, 314f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar llvm::Value *Receiver, 31519cd87eb5fb3c197e631ce08fd52c446c4d4e8f1Daniel Dunbar bool IsClassMessage, 31619cd87eb5fb3c197e631ce08fd52c446c4d4e8f1Daniel Dunbar const CallArgList &CallArgs) { 317b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian llvm::Value *cmd = GetSelector(CGF.Builder, Sel); 318b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 319b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CallArgList ActualArgs; 320b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 321b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian ActualArgs.push_back( 322b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian std::make_pair(RValue::get(CGF.Builder.CreateBitCast(Receiver, IdTy)), 323b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CGF.getContext().getObjCIdType())); 324b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian ActualArgs.push_back(std::make_pair(RValue::get(cmd), 325b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CGF.getContext().getObjCSelType())); 326b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian ActualArgs.insert(ActualArgs.end(), CallArgs.begin(), CallArgs.end()); 327b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 328b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CodeGenTypes &Types = CGM.getTypes(); 329b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian const CGFunctionInfo &FnInfo = Types.getFunctionInfo(ResultType, ActualArgs); 330b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian const llvm::FunctionType *impType = Types.GetFunctionType(FnInfo, false); 331b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 3325efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar llvm::Value *ReceiverClass = 0; 33348e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (isCategoryImpl) { 33448e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner llvm::Constant *classLookupFunction = 0; 33548e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner std::vector<const llvm::Type*> Params; 33648e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner Params.push_back(PtrTy); 33748e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (IsClassMessage) { 33848e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner classLookupFunction = CGM.CreateRuntimeFunction(llvm::FunctionType::get( 33948e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner IdTy, Params, true), "objc_get_meta_class"); 34048e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner } else { 34148e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner classLookupFunction = CGM.CreateRuntimeFunction(llvm::FunctionType::get( 34248e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner IdTy, Params, true), "objc_get_class"); 3435efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } 34448e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner ReceiverClass = CGF.Builder.CreateCall(classLookupFunction, 34548e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner MakeConstantString(Class->getNameAsString())); 3465efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } else { 34748e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner // Set up global aliases for the metaclass or class pointer if they do not 34848e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner // already exist. These will are forward-references which will be set to 34948e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner // pointers to the class and metaclass structure created for the runtime load 35048e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner // function. To send a message to super, we look up the value of the 35148e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner // super_class pointer from either the class or metaclass structure. 35248e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (IsClassMessage) { 35348e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (!MetaClassPtrAlias) { 35448e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner MetaClassPtrAlias = new llvm::GlobalAlias(IdTy, 35548e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner llvm::GlobalValue::InternalLinkage, ".objc_metaclass_ref" + 35648e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner Class->getNameAsString(), NULL, &TheModule); 35748e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner } 35848e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner ReceiverClass = MetaClassPtrAlias; 35948e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner } else { 36048e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (!ClassPtrAlias) { 36148e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner ClassPtrAlias = new llvm::GlobalAlias(IdTy, 36248e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner llvm::GlobalValue::InternalLinkage, ".objc_class_ref" + 36348e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner Class->getNameAsString(), NULL, &TheModule); 36448e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner } 36548e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner ReceiverClass = ClassPtrAlias; 3665efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } 36771238f67c5df13eef19450d66b7a7ab28377192aChris Lattner } 3685efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar // Cast the pointer to a simplified version of the class structure 3695efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar ReceiverClass = CGF.Builder.CreateBitCast(ReceiverClass, 3705efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar llvm::PointerType::getUnqual(llvm::StructType::get(IdTy, IdTy, NULL))); 3715efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar // Get the superclass pointer 3725efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar ReceiverClass = CGF.Builder.CreateStructGEP(ReceiverClass, 1); 3735efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar // Load the superclass pointer 3745efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar ReceiverClass = CGF.Builder.CreateLoad(ReceiverClass); 37520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Construct the structure used to look up the IMP 37620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StructType *ObjCSuperTy = llvm::StructType::get(Receiver->getType(), 37720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IdTy, NULL); 3788f2926b73ed635afecd020da787af6a837601a2bDaniel Dunbar llvm::Value *ObjCSuper = CGF.Builder.CreateAlloca(ObjCSuperTy); 379b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 3808f2926b73ed635afecd020da787af6a837601a2bDaniel Dunbar CGF.Builder.CreateStore(Receiver, CGF.Builder.CreateStructGEP(ObjCSuper, 0)); 3815efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar CGF.Builder.CreateStore(ReceiverClass, 3825efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar CGF.Builder.CreateStructGEP(ObjCSuper, 1)); 38320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 38420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Get the IMP 38526c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian std::vector<const llvm::Type*> Params; 38626c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian Params.push_back(llvm::PointerType::getUnqual(ObjCSuperTy)); 38726c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian Params.push_back(SelectorTy); 38820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *lookupFunction = 38926c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian CGM.CreateRuntimeFunction(llvm::FunctionType::get( 39026c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian llvm::PointerType::getUnqual(impType), Params, true), 39126c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian "objc_msg_lookup_super"); 39226c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian 39320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Value *lookupArgs[] = {ObjCSuper, cmd}; 3948f2926b73ed635afecd020da787af6a837601a2bDaniel Dunbar llvm::Value *imp = CGF.Builder.CreateCall(lookupFunction, lookupArgs, 39520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov lookupArgs+2); 39620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 397b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian return CGF.EmitCall(FnInfo, imp, ActualArgs); 39820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 39920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 40020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// Generate code for a message send expression. 4018f2926b73ed635afecd020da787af6a837601a2bDaniel DunbarCodeGen::RValue 4028f2926b73ed635afecd020da787af6a837601a2bDaniel DunbarCGObjCGNU::GenerateMessageSend(CodeGen::CodeGenFunction &CGF, 4037f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar QualType ResultType, 4047f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar Selector Sel, 405f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar llvm::Value *Receiver, 40619cd87eb5fb3c197e631ce08fd52c446c4d4e8f1Daniel Dunbar bool IsClassMessage, 407df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian const CallArgList &CallArgs, 408df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian const ObjCMethodDecl *Method) { 409df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian llvm::Value *cmd; 410df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian if (Method) 411df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian cmd = GetSelector(CGF.Builder, Method); 412df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian else 413df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian cmd = GetSelector(CGF.Builder, Sel); 414b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CallArgList ActualArgs; 415b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 416b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian ActualArgs.push_back( 417b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian std::make_pair(RValue::get(CGF.Builder.CreateBitCast(Receiver, IdTy)), 418b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CGF.getContext().getObjCIdType())); 419b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian ActualArgs.push_back(std::make_pair(RValue::get(cmd), 420b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CGF.getContext().getObjCSelType())); 421b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian ActualArgs.insert(ActualArgs.end(), CallArgs.begin(), CallArgs.end()); 422b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 423b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CodeGenTypes &Types = CGM.getTypes(); 424b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian const CGFunctionInfo &FnInfo = Types.getFunctionInfo(ResultType, ActualArgs); 425b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian const llvm::FunctionType *impType = Types.GetFunctionType(FnInfo, false); 4260f984268b05edab2cc555a427c441baa9c252658Chris Lattner 42726c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian std::vector<const llvm::Type*> Params; 42826c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian Params.push_back(Receiver->getType()); 42926c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian Params.push_back(SelectorTy); 4300f984268b05edab2cc555a427c441baa9c252658Chris Lattner llvm::Constant *lookupFunction = 43126c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian CGM.CreateRuntimeFunction(llvm::FunctionType::get( 43226c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian llvm::PointerType::getUnqual(impType), Params, true), 43326c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian "objc_msg_lookup"); 43426c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian 4358f2926b73ed635afecd020da787af6a837601a2bDaniel Dunbar llvm::Value *imp = CGF.Builder.CreateCall2(lookupFunction, Receiver, cmd); 4363eae03e7d165f20a863a9a4d7122ba2a691ab16dChris Lattner 437b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian return CGF.EmitCall(FnInfo, imp, ActualArgs); 43820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 43920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 44020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// Generates a MethodList. Used in construction of a objc_class and 44120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// objc_category structures. 44220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::GenerateMethodList(const std::string &ClassName, 443a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner const std::string &CategoryName, 444a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner const llvm::SmallVectorImpl<Selector> &MethodSels, 44520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &MethodTypes, 44620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov bool isClassMethodList) { 44720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Get the method structure type. 44820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StructType *ObjCMethodTy = llvm::StructType::get( 44920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // Really a selector, but the runtime creates it us. 45020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // Method types 45120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::PointerType::getUnqual(IMPTy), //Method pointer 45220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 45320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Methods; 45420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 45520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (unsigned int i = 0, e = MethodTypes.size(); i < e; ++i) { 45620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 457077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner llvm::Constant *C = 458077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner CGM.GetAddrOfConstantCString(MethodSels[i].getAsString()); 459a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner Elements.push_back(llvm::ConstantExpr::getGetElementPtr(C, Zeros, 2)); 46020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back( 46120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ConstantExpr::getGetElementPtr(MethodTypes[i], Zeros, 2)); 46220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Method = 46320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov TheModule.getFunction(SymbolNameForMethod(ClassName, CategoryName, 464077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner MethodSels[i].getAsString(), 465550b8db03c0bb1b006d2ff63d4febda3db16002fChris Lattner isClassMethodList)); 46620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Method = llvm::ConstantExpr::getBitCast(Method, 46720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::PointerType::getUnqual(IMPTy)); 46820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(Method); 46920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.push_back(llvm::ConstantStruct::get(ObjCMethodTy, Elements)); 47020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 47120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 47220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Array of method structures 47320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ArrayType *ObjCMethodArrayTy = llvm::ArrayType::get(ObjCMethodTy, 474a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner MethodSels.size()); 47520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MethodArray = llvm::ConstantArray::get(ObjCMethodArrayTy, 476fba676396703e87a5034e5f308aa30a633468f66Chris Lattner Methods); 47720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 47820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Structure containing list pointer, array and array count 47920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::SmallVector<const llvm::Type*, 16> ObjCMethodListFields; 48020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::PATypeHolder OpaqueNextTy = llvm::OpaqueType::get(); 48120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Type *NextPtrTy = llvm::PointerType::getUnqual(OpaqueNextTy); 48220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StructType *ObjCMethodListTy = llvm::StructType::get(NextPtrTy, 48320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IntTy, 48420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ObjCMethodArrayTy, 48520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 48620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Refine next pointer type to concrete type 48720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::cast<llvm::OpaqueType>( 48820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov OpaqueNextTy.get())->refineAbstractTypeTo(ObjCMethodListTy); 48920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ObjCMethodListTy = llvm::cast<llvm::StructType>(OpaqueNextTy.get()); 49020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 49120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.clear(); 49220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.push_back(llvm::ConstantPointerNull::get( 49320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::PointerType::getUnqual(ObjCMethodListTy))); 49420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.push_back(llvm::ConstantInt::get(llvm::Type::Int32Ty, 49520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov MethodTypes.size())); 49620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.push_back(MethodArray); 49720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 49820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an instance of the structure 49920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ObjCMethodListTy, Methods, ".objc_method_list"); 50020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 50120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 50220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// Generates an IvarList. Used in construction of a objc_class. 50320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::GenerateIvarList( 50420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarNames, 50520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarTypes, 50620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarOffsets) { 50720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Get the method structure type. 50820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StructType *ObjCIvarTy = llvm::StructType::get( 50920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 51020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 51120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IntTy, 51220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 51320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Ivars; 51420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 51520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (unsigned int i = 0, e = IvarNames.size() ; i < e ; i++) { 51620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 51720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back( llvm::ConstantExpr::getGetElementPtr(IvarNames[i], 51820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Zeros, 2)); 51920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back( llvm::ConstantExpr::getGetElementPtr(IvarTypes[i], 52020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Zeros, 2)); 52120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(IvarOffsets[i]); 52220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Ivars.push_back(llvm::ConstantStruct::get(ObjCIvarTy, Elements)); 52320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 52420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 52520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Array of method structures 52620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ArrayType *ObjCIvarArrayTy = llvm::ArrayType::get(ObjCIvarTy, 52720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IvarNames.size()); 52820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 52920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 53020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 531e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner Elements.push_back(llvm::ConstantInt::get(IntTy, (int)IvarNames.size())); 53220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(llvm::ConstantArray::get(ObjCIvarArrayTy, Ivars)); 53320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Structure containing array and array count 53420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StructType *ObjCIvarListTy = llvm::StructType::get(IntTy, 53520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ObjCIvarArrayTy, 53620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 53720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 53820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an instance of the structure 53920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ObjCIvarListTy, Elements, ".objc_ivar_list"); 5400f984268b05edab2cc555a427c441baa9c252658Chris Lattner} 5410f984268b05edab2cc555a427c441baa9c252658Chris Lattner 54220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// Generate a class structure 54320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::GenerateClassStructure( 54420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MetaClass, 54520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SuperClass, 54620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov unsigned info, 547d002cc6fc5b72bf00e3b7b4571ccf0f23c789b4bChris Lattner const char *Name, 54820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Version, 54920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *InstanceSize, 55020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *IVars, 55120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Methods, 55220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Protocols) { 55320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Set up the class structure 55420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Note: Several of these are char*s when they should be ids. This is 55520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // because the runtime performs this translation on load. 55620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StructType *ClassTy = llvm::StructType::get( 55720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // class_pointer 55820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // super_class 55920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // name 56020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov LongTy, // version 56120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov LongTy, // info 56220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov LongTy, // instance_size 56320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IVars->getType(), // ivars 56420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods->getType(), // methods 56520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // These are all filled in by the runtime, so we pretend 56620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // dtable 56720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // subclass_list 56820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // sibling_class 56920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // protocols 57020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // gc_object_type 57120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 57220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Zero = llvm::ConstantInt::get(LongTy, 0); 57320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *NullP = 574e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner llvm::ConstantPointerNull::get(PtrTy); 57520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Fill in the structure 57620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 57720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(llvm::ConstantExpr::getBitCast(MetaClass, PtrToInt8Ty)); 57820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(SuperClass); 579d002cc6fc5b72bf00e3b7b4571ccf0f23c789b4bChris Lattner Elements.push_back(MakeConstantString(Name, ".class_name")); 58020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(Zero); 58120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(llvm::ConstantInt::get(LongTy, info)); 58220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(InstanceSize); 58320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(IVars); 58420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(Methods); 58520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NullP); 58620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NullP); 58720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NullP); 58820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(llvm::ConstantExpr::getBitCast(Protocols, PtrTy)); 58920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NullP); 59020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an instance of the structure 5911565e0364b05d163640dd2b6feed43bae67df4fdChris Lattner return MakeGlobal(ClassTy, Elements, SymbolNameForClass(Name)); 59220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 59320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 59420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::GenerateProtocolMethodList( 59520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &MethodNames, 59620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &MethodTypes) { 59720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Get the method structure type. 59820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StructType *ObjCMethodDescTy = llvm::StructType::get( 59920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // Really a selector, but the runtime does the casting for us. 60020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 60120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 60220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Methods; 60320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 60420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (unsigned int i = 0, e = MethodTypes.size() ; i < e ; i++) { 60520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 60620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back( llvm::ConstantExpr::getGetElementPtr(MethodNames[i], 60720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Zeros, 2)); 60820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back( 60920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ConstantExpr::getGetElementPtr(MethodTypes[i], Zeros, 2)); 61020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.push_back(llvm::ConstantStruct::get(ObjCMethodDescTy, Elements)); 61120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 61220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ArrayType *ObjCMethodArrayTy = llvm::ArrayType::get(ObjCMethodDescTy, 61320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov MethodNames.size()); 61420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Array = llvm::ConstantArray::get(ObjCMethodArrayTy, Methods); 61520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StructType *ObjCMethodDescListTy = llvm::StructType::get( 61620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IntTy, ObjCMethodArrayTy, NULL); 61720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.clear(); 61820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.push_back(llvm::ConstantInt::get(IntTy, MethodNames.size())); 61920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.push_back(Array); 62020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ObjCMethodDescListTy, Methods, ".objc_method_list"); 62120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 62220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// Create the protocol list structure used in classes, categories and so on 62320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::GenerateProtocolList( 62420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<std::string> &Protocols) { 62520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ArrayType *ProtocolArrayTy = llvm::ArrayType::get(PtrToInt8Ty, 62620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Protocols.size()); 62720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StructType *ProtocolListTy = llvm::StructType::get( 62820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, //Should be a recurisve pointer, but it's always NULL here. 62920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov LongTy,//FIXME: Should be size_t 63020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ProtocolArrayTy, 63120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 63220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 63320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (const std::string *iter = Protocols.begin(), *endIter = Protocols.end(); 63420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter != endIter ; iter++) { 635f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::Constant *protocol = ExistingProtocols[*iter]; 636f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian if (!protocol) 637f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian protocol = GenerateEmptyProtocol(*iter); 63820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Ptr = 639f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::ConstantExpr::getBitCast(protocol, PtrToInt8Ty); 64020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(Ptr); 64120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 64220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant * ProtocolArray = llvm::ConstantArray::get(ProtocolArrayTy, 64320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements); 64420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 64520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 646e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner Elements.push_back(llvm::ConstantInt::get(LongTy, Protocols.size())); 64720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ProtocolArray); 64820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ProtocolListTy, Elements, ".objc_protocol_list"); 64920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 65020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 65145d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbarllvm::Value *CGObjCGNU::GenerateProtocolRef(CGBuilderTy &Builder, 652af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar const ObjCProtocolDecl *PD) { 653f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::Value *protocol = ExistingProtocols[PD->getNameAsString()]; 654f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian const llvm::Type *T = 655f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian CGM.getTypes().ConvertType(CGM.getContext().getObjCProtoType()); 656f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian return Builder.CreateBitCast(protocol, llvm::PointerType::getUnqual(T)); 657f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian} 658f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian 659f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanianllvm::Constant *CGObjCGNU::GenerateEmptyProtocol( 660f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian const std::string &ProtocolName) { 661f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::SmallVector<std::string, 0> EmptyStringVector; 662f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::SmallVector<llvm::Constant*, 0> EmptyConstantVector; 663f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian 664f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::Constant *ProtocolList = GenerateProtocolList(EmptyStringVector); 665f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::Constant *InstanceMethodList = 666f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian GenerateProtocolMethodList(EmptyConstantVector, EmptyConstantVector); 667f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::Constant *ClassMethodList = 668f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian GenerateProtocolMethodList(EmptyConstantVector, EmptyConstantVector); 669f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian // Protocols are objects containing lists of the methods implemented and 670f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian // protocols adopted. 671f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::StructType *ProtocolTy = llvm::StructType::get(IdTy, 672f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian PtrToInt8Ty, 673f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian ProtocolList->getType(), 674f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian InstanceMethodList->getType(), 675f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian ClassMethodList->getType(), 676f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian NULL); 677f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian std::vector<llvm::Constant*> Elements; 678f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian // The isa pointer must be set to a magic number so the runtime knows it's 679f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian // the correct layout. 680f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian Elements.push_back(llvm::ConstantExpr::getIntToPtr( 681f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::ConstantInt::get(llvm::Type::Int32Ty, ProtocolVersion), IdTy)); 682f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian Elements.push_back(MakeConstantString(ProtocolName, ".objc_protocol_name")); 683f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian Elements.push_back(ProtocolList); 684f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian Elements.push_back(InstanceMethodList); 685f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian Elements.push_back(ClassMethodList); 686f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian return MakeGlobal(ProtocolTy, Elements, ".objc_protocol"); 68720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 68820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 689af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbarvoid CGObjCGNU::GenerateProtocol(const ObjCProtocolDecl *PD) { 690af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar ASTContext &Context = CGM.getContext(); 6918ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string ProtocolName = PD->getNameAsString(); 692af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar llvm::SmallVector<std::string, 16> Protocols; 693af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar for (ObjCProtocolDecl::protocol_iterator PI = PD->protocol_begin(), 694af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar E = PD->protocol_end(); PI != E; ++PI) 695d9d22dd9c94618490dbffb0e2caf222530ca39d3Chris Lattner Protocols.push_back((*PI)->getNameAsString()); 696af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> InstanceMethodNames; 697af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> InstanceMethodTypes; 6986ab3524f72a6e64aa04973fa9433b5559abb3525Douglas Gregor for (ObjCProtocolDecl::instmeth_iterator iter = PD->instmeth_begin(Context), 6996ab3524f72a6e64aa04973fa9433b5559abb3525Douglas Gregor E = PD->instmeth_end(Context); iter != E; iter++) { 700af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar std::string TypeStr; 701af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar Context.getObjCEncodingForMethodDecl(*iter, TypeStr); 702af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar InstanceMethodNames.push_back( 703077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner CGM.GetAddrOfConstantCString((*iter)->getSelector().getAsString())); 7046143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar InstanceMethodTypes.push_back(CGM.GetAddrOfConstantCString(TypeStr)); 705af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar } 706af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar // Collect information about class methods: 707af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> ClassMethodNames; 708af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> ClassMethodTypes; 7096ab3524f72a6e64aa04973fa9433b5559abb3525Douglas Gregor for (ObjCProtocolDecl::classmeth_iterator 7106ab3524f72a6e64aa04973fa9433b5559abb3525Douglas Gregor iter = PD->classmeth_begin(Context), 7116ab3524f72a6e64aa04973fa9433b5559abb3525Douglas Gregor endIter = PD->classmeth_end(Context) ; iter != endIter ; iter++) { 712af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar std::string TypeStr; 713af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar Context.getObjCEncodingForMethodDecl((*iter),TypeStr); 714af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar ClassMethodNames.push_back( 715077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner CGM.GetAddrOfConstantCString((*iter)->getSelector().getAsString())); 7166143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar ClassMethodTypes.push_back(CGM.GetAddrOfConstantCString(TypeStr)); 717af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar } 71820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 71920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ProtocolList = GenerateProtocolList(Protocols); 72020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *InstanceMethodList = 72120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov GenerateProtocolMethodList(InstanceMethodNames, InstanceMethodTypes); 72220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ClassMethodList = 72320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov GenerateProtocolMethodList(ClassMethodNames, ClassMethodTypes); 72420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Protocols are objects containing lists of the methods implemented and 72520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // protocols adopted. 72620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StructType *ProtocolTy = llvm::StructType::get(IdTy, 72720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 72820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ProtocolList->getType(), 72920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov InstanceMethodList->getType(), 73020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ClassMethodList->getType(), 73120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 73220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 73320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // The isa pointer must be set to a magic number so the runtime knows it's 73420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // the correct layout. 73520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(llvm::ConstantExpr::getIntToPtr( 73620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ConstantInt::get(llvm::Type::Int32Ty, ProtocolVersion), IdTy)); 73720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(MakeConstantString(ProtocolName, ".objc_protocol_name")); 73820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ProtocolList); 73920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(InstanceMethodList); 74020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ClassMethodList); 74120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ExistingProtocols[ProtocolName] = 74220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ConstantExpr::getBitCast(MakeGlobal(ProtocolTy, Elements, 74320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ".objc_protocol"), IdTy); 74420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 74520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 7467ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbarvoid CGObjCGNU::GenerateCategory(const ObjCCategoryImplDecl *OCD) { 7478ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string ClassName = OCD->getClassInterface()->getNameAsString(); 7488ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string CategoryName = OCD->getNameAsString(); 7497ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about instance methods 7507ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<Selector, 16> InstanceMethodSels; 7517ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> InstanceMethodTypes; 752653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor for (ObjCCategoryImplDecl::instmeth_iterator 753653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter = OCD->instmeth_begin(CGM.getContext()), 754653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor endIter = OCD->instmeth_end(CGM.getContext()); 755653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter != endIter ; iter++) { 7567ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar InstanceMethodSels.push_back((*iter)->getSelector()); 7577ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 7587ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar CGM.getContext().getObjCEncodingForMethodDecl(*iter,TypeStr); 7597ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar InstanceMethodTypes.push_back(CGM.GetAddrOfConstantCString(TypeStr)); 7607ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 7617ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 7627ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about class methods 7637ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<Selector, 16> ClassMethodSels; 7647ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> ClassMethodTypes; 765653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor for (ObjCCategoryImplDecl::classmeth_iterator 766653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter = OCD->classmeth_begin(CGM.getContext()), 767653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor endIter = OCD->classmeth_end(CGM.getContext()); 768653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter != endIter ; iter++) { 7697ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar ClassMethodSels.push_back((*iter)->getSelector()); 7707ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 7717ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar CGM.getContext().getObjCEncodingForMethodDecl(*iter,TypeStr); 7727ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar ClassMethodTypes.push_back(CGM.GetAddrOfConstantCString(TypeStr)); 7737ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 7747ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 7757ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect the names of referenced protocols 7767ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<std::string, 16> Protocols; 7777ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar const ObjCInterfaceDecl *ClassDecl = OCD->getClassInterface(); 7787ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar const ObjCList<ObjCProtocolDecl> &Protos =ClassDecl->getReferencedProtocols(); 7797ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar for (ObjCList<ObjCProtocolDecl>::iterator I = Protos.begin(), 7807ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar E = Protos.end(); I != E; ++I) 781d9d22dd9c94618490dbffb0e2caf222530ca39d3Chris Lattner Protocols.push_back((*I)->getNameAsString()); 7827ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 78320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 78420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(MakeConstantString(CategoryName)); 78520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(MakeConstantString(ClassName)); 78620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Instance method list 78720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(llvm::ConstantExpr::getBitCast(GenerateMethodList( 788a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner ClassName, CategoryName, InstanceMethodSels, InstanceMethodTypes, 78920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov false), PtrTy)); 79020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Class method list 79120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(llvm::ConstantExpr::getBitCast(GenerateMethodList( 792a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner ClassName, CategoryName, ClassMethodSels, ClassMethodTypes, true), 79320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy)); 79420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Protocol list 79520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(llvm::ConstantExpr::getBitCast( 79620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov GenerateProtocolList(Protocols), PtrTy)); 79720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Categories.push_back(llvm::ConstantExpr::getBitCast( 79820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov MakeGlobal(llvm::StructType::get(PtrToInt8Ty, PtrToInt8Ty, PtrTy, 79920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, PtrTy, NULL), Elements), PtrTy)); 80020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 8017ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 8027ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbarvoid CGObjCGNU::GenerateClass(const ObjCImplementationDecl *OID) { 8037ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar ASTContext &Context = CGM.getContext(); 8047ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 8057ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Get the superclass name. 8067ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar const ObjCInterfaceDecl * SuperClassDecl = 8077ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar OID->getClassInterface()->getSuperClass(); 8088ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string SuperClassName; 8098ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner if (SuperClassDecl) 8108ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner SuperClassName = SuperClassDecl->getNameAsString(); 8117ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 8127ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Get the class name 81309dc6660487fc2f4a4bb2032e30123d3e0da7230Chris Lattner ObjCInterfaceDecl *ClassDecl = 81409dc6660487fc2f4a4bb2032e30123d3e0da7230Chris Lattner const_cast<ObjCInterfaceDecl *>(OID->getClassInterface()); 8158ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string ClassName = ClassDecl->getNameAsString(); 8167ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 8172bebbf0acee55404de4b8846713b64429e744e8fDaniel Dunbar // Get the size of instances. 8182bebbf0acee55404de4b8846713b64429e744e8fDaniel Dunbar int instanceSize = Context.getASTObjCImplementationLayout(OID).getSize() / 8; 8197ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 8207ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about instance variables. 8217ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> IvarNames; 8227ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> IvarTypes; 8237ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> IvarOffsets; 8247ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar for (ObjCInterfaceDecl::ivar_iterator iter = ClassDecl->ivar_begin(), 8257ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar endIter = ClassDecl->ivar_end() ; iter != endIter ; iter++) { 8267ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Store the name 827d9d22dd9c94618490dbffb0e2caf222530ca39d3Chris Lattner IvarNames.push_back(CGM.GetAddrOfConstantCString((*iter) 828d9d22dd9c94618490dbffb0e2caf222530ca39d3Chris Lattner ->getNameAsString())); 8297ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Get the type encoding for this ivar 8307ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 8310d504c1da852e58ff802545c823ecff3b6c654b8Daniel Dunbar Context.getObjCEncodingForType((*iter)->getType(), TypeStr); 8327ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar IvarTypes.push_back(CGM.GetAddrOfConstantCString(TypeStr)); 8337ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Get the offset 834c8cbf1944863160f5f6f82967270b68bfb41361fDaniel Dunbar uint64_t Offset = ComputeIvarBaseOffset(CGM, ClassDecl, *iter); 8357ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar IvarOffsets.push_back( 836c8cbf1944863160f5f6f82967270b68bfb41361fDaniel Dunbar llvm::ConstantInt::get(llvm::Type::Int32Ty, Offset)); 8377ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 8387ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 8397ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about instance methods 8407ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<Selector, 16> InstanceMethodSels; 8417ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> InstanceMethodTypes; 842653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor for (ObjCImplementationDecl::instmeth_iterator 843653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter = OID->instmeth_begin(CGM.getContext()), 844653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor endIter = OID->instmeth_end(CGM.getContext()); 845653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter != endIter ; iter++) { 8467ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar InstanceMethodSels.push_back((*iter)->getSelector()); 8477ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 8487ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar Context.getObjCEncodingForMethodDecl((*iter),TypeStr); 8497ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar InstanceMethodTypes.push_back(CGM.GetAddrOfConstantCString(TypeStr)); 8507ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 8517ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 8527ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about class methods 8537ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<Selector, 16> ClassMethodSels; 8547ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> ClassMethodTypes; 855653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor for (ObjCImplementationDecl::classmeth_iterator 856653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter = OID->classmeth_begin(CGM.getContext()), 857653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor endIter = OID->classmeth_end(CGM.getContext()); 858653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter != endIter ; iter++) { 8597ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar ClassMethodSels.push_back((*iter)->getSelector()); 8607ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 8617ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar Context.getObjCEncodingForMethodDecl((*iter),TypeStr); 8627ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar ClassMethodTypes.push_back(CGM.GetAddrOfConstantCString(TypeStr)); 8637ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 8647ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect the names of referenced protocols 8657ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<std::string, 16> Protocols; 8667ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar const ObjCList<ObjCProtocolDecl> &Protos =ClassDecl->getReferencedProtocols(); 8677ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar for (ObjCList<ObjCProtocolDecl>::iterator I = Protos.begin(), 8687ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar E = Protos.end(); I != E; ++I) 869d9d22dd9c94618490dbffb0e2caf222530ca39d3Chris Lattner Protocols.push_back((*I)->getNameAsString()); 8707ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 8717ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 8727ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 87320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Get the superclass pointer. 87420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SuperClass; 8758ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner if (!SuperClassName.empty()) { 87620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov SuperClass = MakeConstantString(SuperClassName, ".super_class_name"); 87720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } else { 878e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner SuperClass = llvm::ConstantPointerNull::get(PtrToInt8Ty); 87920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 88020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Empty vector used to construct empty method lists 88120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::SmallVector<llvm::Constant*, 1> empty; 88220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Generate the method and instance variable lists 88320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MethodList = GenerateMethodList(ClassName, "", 884a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner InstanceMethodSels, InstanceMethodTypes, false); 88520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ClassMethodList = GenerateMethodList(ClassName, "", 886a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner ClassMethodSels, ClassMethodTypes, true); 88720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *IvarList = GenerateIvarList(IvarNames, IvarTypes, 88820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IvarOffsets); 88920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov //Generate metaclass for class methods 89020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MetaClassStruct = GenerateClassStructure(NULLPtr, 8911565e0364b05d163640dd2b6feed43bae67df4fdChris Lattner NULLPtr, 0x2L, /*name*/"", 0, Zeros[0], GenerateIvarList( 89220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov empty, empty, empty), ClassMethodList, NULLPtr); 8935efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar 89420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Generate the class structure 8958ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner llvm::Constant *ClassStruct = 8968ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner GenerateClassStructure(MetaClassStruct, SuperClass, 0x1L, 8978ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner ClassName.c_str(), 0, 8983a5013cab1162118bd5bcf00a36c52e19a319f87Sebastian Redl llvm::ConstantInt::get(LongTy, instanceSize), IvarList, 89920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov MethodList, GenerateProtocolList(Protocols)); 9005efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar 9015efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar // Resolve the class aliases, if they exist. 9025efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar if (ClassPtrAlias) { 9035efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar ClassPtrAlias->setAliasee( 9045efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar llvm::ConstantExpr::getBitCast(ClassStruct, IdTy)); 9055efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar ClassPtrAlias = 0; 9065efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } 9075efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar if (MetaClassPtrAlias) { 9085efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar MetaClassPtrAlias->setAliasee( 9095efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar llvm::ConstantExpr::getBitCast(MetaClassStruct, IdTy)); 9105efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar MetaClassPtrAlias = 0; 9115efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } 9125efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar 91320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Add class structure to list to be added to the symtab later 91420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ClassStruct = llvm::ConstantExpr::getBitCast(ClassStruct, PtrToInt8Ty); 91520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.push_back(ClassStruct); 91620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 91720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 91820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Function *CGObjCGNU::ModuleInitFunction() { 91920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Only emit an ObjC load function if no Objective-C stuff has been called 92020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov if (Classes.empty() && Categories.empty() && ConstantStrings.empty() && 92120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ExistingProtocols.empty() && TypedSelectors.empty() && 9225f58b911304f7d114f929d1726a09cd1c828a5ddAnton Korobeynikov UntypedSelectors.empty()) 92320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return NULL; 9241b8956e1ce4c5770982d6e59edb16979b500677aEli Friedman 925e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::StructType *SelStructTy = dyn_cast<llvm::StructType>( 926e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner SelectorTy->getElementType()); 927e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::Type *SelStructPtrTy = SelectorTy; 928e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner bool isSelOpaque = false; 929e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner if (SelStructTy == 0) { 930e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner SelStructTy = llvm::StructType::get(PtrToInt8Ty, PtrToInt8Ty, NULL); 931e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner SelStructPtrTy = llvm::PointerType::getUnqual(SelStructTy); 932e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner isSelOpaque = true; 933e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner } 934e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner 9351b8956e1ce4c5770982d6e59edb16979b500677aEli Friedman // Name the ObjC types to make the IR a bit easier to read 936e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner TheModule.addTypeName(".objc_selector", SelStructPtrTy); 9371b8956e1ce4c5770982d6e59edb16979b500677aEli Friedman TheModule.addTypeName(".objc_id", IdTy); 9381b8956e1ce4c5770982d6e59edb16979b500677aEli Friedman TheModule.addTypeName(".objc_imp", IMPTy); 9391b8956e1ce4c5770982d6e59edb16979b500677aEli Friedman 94020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 94171238f67c5df13eef19450d66b7a7ab28377192aChris Lattner llvm::Constant *Statics = NULLPtr; 94220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Generate statics list: 94371238f67c5df13eef19450d66b7a7ab28377192aChris Lattner if (ConstantStrings.size()) { 94471238f67c5df13eef19450d66b7a7ab28377192aChris Lattner llvm::ArrayType *StaticsArrayTy = llvm::ArrayType::get(PtrToInt8Ty, 94571238f67c5df13eef19450d66b7a7ab28377192aChris Lattner ConstantStrings.size() + 1); 94671238f67c5df13eef19450d66b7a7ab28377192aChris Lattner ConstantStrings.push_back(NULLPtr); 94771238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Elements.push_back(MakeConstantString("NSConstantString", 94871238f67c5df13eef19450d66b7a7ab28377192aChris Lattner ".objc_static_class_name")); 94971238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Elements.push_back(llvm::ConstantArray::get(StaticsArrayTy, 95071238f67c5df13eef19450d66b7a7ab28377192aChris Lattner ConstantStrings)); 95171238f67c5df13eef19450d66b7a7ab28377192aChris Lattner llvm::StructType *StaticsListTy = 95271238f67c5df13eef19450d66b7a7ab28377192aChris Lattner llvm::StructType::get(PtrToInt8Ty, StaticsArrayTy, NULL); 95371238f67c5df13eef19450d66b7a7ab28377192aChris Lattner llvm::Type *StaticsListPtrTy = llvm::PointerType::getUnqual(StaticsListTy); 95471238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Statics = MakeGlobal(StaticsListTy, Elements, ".objc_statics"); 95571238f67c5df13eef19450d66b7a7ab28377192aChris Lattner llvm::ArrayType *StaticsListArrayTy = 95671238f67c5df13eef19450d66b7a7ab28377192aChris Lattner llvm::ArrayType::get(StaticsListPtrTy, 2); 95771238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Elements.clear(); 95871238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Elements.push_back(Statics); 95971238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Elements.push_back(llvm::Constant::getNullValue(StaticsListPtrTy)); 96071238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Statics = MakeGlobal(StaticsListArrayTy, Elements, ".objc_statics_ptr"); 96171238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Statics = llvm::ConstantExpr::getBitCast(Statics, PtrTy); 96271238f67c5df13eef19450d66b7a7ab28377192aChris Lattner } 96320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Array of classes, categories, and constant objects 96420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ArrayType *ClassListTy = llvm::ArrayType::get(PtrToInt8Ty, 96520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.size() + Categories.size() + 2); 966e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner llvm::StructType *SymTabTy = llvm::StructType::get(LongTy, SelStructPtrTy, 967630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner llvm::Type::Int16Ty, 968630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner llvm::Type::Int16Ty, 969630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner ClassListTy, NULL); 97020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 97120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 97220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Pointer to an array of selectors used in this module. 97320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Selectors; 97420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (std::map<TypedSelector, llvm::GlobalAlias*>::iterator 97520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter = TypedSelectors.begin(), iterEnd = TypedSelectors.end(); 97620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter != iterEnd ; ++iter) { 977630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner Elements.push_back(MakeConstantString(iter->first.first, ".objc_sel_name")); 978630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner Elements.push_back(MakeConstantString(iter->first.second, 979630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner ".objc_sel_types")); 98020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Selectors.push_back(llvm::ConstantStruct::get(SelStructTy, Elements)); 98120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 98220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 98320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (llvm::StringMap<llvm::GlobalAlias*>::iterator 98420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter = UntypedSelectors.begin(), iterEnd = UntypedSelectors.end(); 985630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner iter != iterEnd; ++iter) { 98620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back( 987630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner MakeConstantString(iter->getKeyData(), ".objc_sel_name")); 98820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 98920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Selectors.push_back(llvm::ConstantStruct::get(SelStructTy, Elements)); 99020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 99120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 99220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 99320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 99420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Selectors.push_back(llvm::ConstantStruct::get(SelStructTy, Elements)); 99520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 99620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Number of static selectors 99720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(llvm::ConstantInt::get(LongTy, Selectors.size() )); 99820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SelectorList = MakeGlobal( 99920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ArrayType::get(SelStructTy, Selectors.size()), Selectors, 100020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ".objc_selector_list"); 1001e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner Elements.push_back(llvm::ConstantExpr::getBitCast(SelectorList, 1002e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner SelStructPtrTy)); 100320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 100420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Now that all of the static selectors exist, create pointers to them. 100520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov int index = 0; 100620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (std::map<TypedSelector, llvm::GlobalAlias*>::iterator 100720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter=TypedSelectors.begin(), iterEnd =TypedSelectors.end(); 100820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter != iterEnd; ++iter) { 100920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Idxs[] = {Zeros[0], 101020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ConstantInt::get(llvm::Type::Int32Ty, index++), Zeros[0]}; 1011e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner llvm::Constant *SelPtr = new llvm::GlobalVariable(SelStructPtrTy, 1012e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner true, llvm::GlobalValue::InternalLinkage, 101320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ConstantExpr::getGetElementPtr(SelectorList, Idxs, 2), 101420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ".objc_sel_ptr", &TheModule); 1015e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner // If selectors are defined as an opaque type, cast the pointer to this 1016e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner // type. 1017e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner if (isSelOpaque) { 1018e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner SelPtr = llvm::ConstantExpr::getBitCast(SelPtr, 1019e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner llvm::PointerType::getUnqual(SelectorTy)); 1020e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner } 102120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov (*iter).second->setAliasee(SelPtr); 102220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 102320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (llvm::StringMap<llvm::GlobalAlias*>::iterator 102420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter=UntypedSelectors.begin(), iterEnd = UntypedSelectors.end(); 102520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter != iterEnd; iter++) { 102620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Idxs[] = {Zeros[0], 102720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ConstantInt::get(llvm::Type::Int32Ty, index++), Zeros[0]}; 1028e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner llvm::Constant *SelPtr = new llvm::GlobalVariable(SelStructPtrTy, true, 102920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::GlobalValue::InternalLinkage, 103020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ConstantExpr::getGetElementPtr(SelectorList, Idxs, 2), 103120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ".objc_sel_ptr", &TheModule); 1032e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner // If selectors are defined as an opaque type, cast the pointer to this 1033e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner // type. 1034e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner if (isSelOpaque) { 1035e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner SelPtr = llvm::ConstantExpr::getBitCast(SelPtr, 1036e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner llvm::PointerType::getUnqual(SelectorTy)); 1037e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner } 103820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov (*iter).second->setAliasee(SelPtr); 103920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 104020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Number of classes defined. 104120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(llvm::ConstantInt::get(llvm::Type::Int16Ty, 104220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.size())); 104320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Number of categories defined 104420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(llvm::ConstantInt::get(llvm::Type::Int16Ty, 104520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Categories.size())); 104620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an array of classes, then categories, then static object instances 104720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.insert(Classes.end(), Categories.begin(), Categories.end()); 104820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // NULL-terminated list of static object instances (mainly constant strings) 104920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.push_back(Statics); 105020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.push_back(NULLPtr); 105120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ClassList = llvm::ConstantArray::get(ClassListTy, Classes); 105220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ClassList); 105320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Construct the symbol table 105420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SymTab= MakeGlobal(SymTabTy, Elements); 105520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 105620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // The symbol table is contained in a module which has some version-checking 105720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // constants 105820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StructType * ModuleTy = llvm::StructType::get(LongTy, LongTy, 105920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, llvm::PointerType::getUnqual(SymTabTy), NULL); 106020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 106120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Runtime version used for compatibility checking. 106220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(llvm::ConstantInt::get(LongTy, RuntimeVersion)); 106391a0b51438e5259a79d68d7450c453827beed9e2Fariborz Jahanian // sizeof(ModuleTy) 106491a0b51438e5259a79d68d7450c453827beed9e2Fariborz Jahanian llvm::TargetData td = llvm::TargetData::TargetData(&TheModule); 106591a0b51438e5259a79d68d7450c453827beed9e2Fariborz Jahanian Elements.push_back(llvm::ConstantInt::get(LongTy, td.getTypeSizeInBits(ModuleTy)/8)); 106620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov //FIXME: Should be the path to the file where this module was declared 106720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 106820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(SymTab); 106920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Value *Module = MakeGlobal(ModuleTy, Elements); 107020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 107120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create the load function calling the runtime entry point with the module 107220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // structure 107320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<const llvm::Type*> VoidArgs; 107420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Function * LoadFunction = llvm::Function::Create( 107520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::FunctionType::get(llvm::Type::VoidTy, VoidArgs, false), 107620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::GlobalValue::InternalLinkage, ".objc_load_function", 107720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov &TheModule); 107820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::BasicBlock *EntryBB = llvm::BasicBlock::Create("entry", LoadFunction); 107945d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbar CGBuilderTy Builder; 108020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Builder.SetInsertPoint(EntryBB); 108126c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian 108226c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian std::vector<const llvm::Type*> Params(1, 108326c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian llvm::PointerType::getUnqual(ModuleTy)); 108426c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian llvm::Value *Register = CGM.CreateRuntimeFunction(llvm::FunctionType::get( 108526c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian llvm::Type::VoidTy, Params, true), "__objc_exec_class"); 108620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Builder.CreateCall(Register, Module); 108720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Builder.CreateRetVoid(); 108820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return LoadFunction; 108920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 10907ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 1091679a502d462ef819e6175b58e255ca3f3391e7cfFariborz Jahanianllvm::Function *CGObjCGNU::GenerateMethod(const ObjCMethodDecl *OMD, 1092679a502d462ef819e6175b58e255ca3f3391e7cfFariborz Jahanian const ObjCContainerDecl *CD) { 10937ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar const ObjCCategoryImplDecl *OCD = 10943e0a540b6d846178857289ec0eb8470a278d11a3Steve Naroff dyn_cast<ObjCCategoryImplDecl>(OMD->getDeclContext()); 1095077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner std::string CategoryName = OCD ? OCD->getNameAsString() : ""; 1096077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner std::string ClassName = OMD->getClassInterface()->getNameAsString(); 1097077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner std::string MethodName = OMD->getSelector().getAsString(); 1098f8d49f64ef6ab7e632717a31631fc289aab69428Douglas Gregor bool isClassMethod = !OMD->isInstanceMethod(); 1099391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner 1100541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel Dunbar CodeGenTypes &Types = CGM.getTypes(); 110145c25ba11cbf8c9a461def5b03f6ee9481e06769Daniel Dunbar const llvm::FunctionType *MethodTy = 1102541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel Dunbar Types.GetFunctionType(Types.getFunctionInfo(OMD), OMD->isVariadic()); 110320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::string FunctionName = SymbolNameForMethod(ClassName, CategoryName, 110420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov MethodName, isClassMethod); 110520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 1106984d0b414bc76d3530b9bc55a5a55834ba76c607Gabor Greif llvm::Function *Method = llvm::Function::Create(MethodTy, 1107391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner llvm::GlobalValue::InternalLinkage, 110820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov FunctionName, 1109391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner &TheModule); 1110391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner return Method; 1111391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner} 1112391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner 111349f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbarllvm::Function *CGObjCGNU::GetPropertyGetFunction() { 111449f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar return 0; 111549f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar} 111649f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar 111749f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbarllvm::Function *CGObjCGNU::GetPropertySetFunction() { 111849f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar return 0; 111949f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar} 112049f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar 112149f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbarllvm::Function *CGObjCGNU::EnumerationMutationFunction() { 112226c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian std::vector<const llvm::Type*> Params(1, IdTy); 112326c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian return cast<llvm::Function>(CGM.CreateRuntimeFunction( 112426c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian llvm::FunctionType::get(llvm::Type::VoidTy, Params, true), 112526c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian "objc_enumerationMutation")); 11262abd89c039e835e84519a4cd8a7495899a70153dAnders Carlsson} 11272abd89c039e835e84519a4cd8a7495899a70153dAnders Carlsson 1128bd71be4683c195260d5245118b1e13e6b2e20504Fariborz Jahanianvoid CGObjCGNU::EmitTryOrSynchronizedStmt(CodeGen::CodeGenFunction &CGF, 1129bd71be4683c195260d5245118b1e13e6b2e20504Fariborz Jahanian const Stmt &S) { 11305dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Pointer to the personality function 11315dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Constant *Personality = 11325dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGM.CreateRuntimeFunction(llvm::FunctionType::get(llvm::Type::Int32Ty, 11335dc0867af17b3bd6f567897433853b2b4767446cChris Lattner std::vector<const llvm::Type*>(), true), 11345dc0867af17b3bd6f567897433853b2b4767446cChris Lattner "__gnu_objc_personality_v0"); 11355dc0867af17b3bd6f567897433853b2b4767446cChris Lattner Personality = llvm::ConstantExpr::getBitCast(Personality, PtrTy); 11365dc0867af17b3bd6f567897433853b2b4767446cChris Lattner std::vector<const llvm::Type*> Params; 11375dc0867af17b3bd6f567897433853b2b4767446cChris Lattner Params.push_back(PtrTy); 11385dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Value *RethrowFn = 11395dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGM.CreateRuntimeFunction(llvm::FunctionType::get(llvm::Type::VoidTy, 11405dc0867af17b3bd6f567897433853b2b4767446cChris Lattner Params, false), "_Unwind_Resume_or_Rethrow"); 11415dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 11425dc0867af17b3bd6f567897433853b2b4767446cChris Lattner bool isTry = isa<ObjCAtTryStmt>(S); 11435dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *TryBlock = CGF.createBasicBlock("try"); 11445dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *PrevLandingPad = CGF.getInvokeDest(); 11455dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *TryHandler = CGF.createBasicBlock("try.handler"); 11465dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *FinallyBlock = CGF.createBasicBlock("finally"); 11475dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *FinallyRethrow = CGF.createBasicBlock("finally.throw"); 11485dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *FinallyEnd = CGF.createBasicBlock("finally.end"); 11495dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 11505dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // GNU runtime does not currently support @synchronized() 11515dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (!isTry) { 11525dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.ErrorUnsupported(&S, "@synchronized statement"); 11535dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 11545dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 11555dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Push an EH context entry, used for handling rethrows and jumps 11565dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // through finally. 11575dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.PushCleanupBlock(FinallyBlock); 11585dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 11595dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Emit the statements in the @try {} block 11605dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.setInvokeDest(TryHandler); 11615dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 11625dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(TryBlock); 11635dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitStmt(isTry ? cast<ObjCAtTryStmt>(S).getTryBody() 11645dc0867af17b3bd6f567897433853b2b4767446cChris Lattner : cast<ObjCAtSynchronizedStmt>(S).getSynchBody()); 11655dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 11665dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Jump to @finally if there is no exception 11675dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBranchThroughCleanup(FinallyEnd); 11685dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 11695dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Emit the handlers 11705dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(TryHandler); 11715dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 1172bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner // Get the correct versions of the exception handling intrinsics 1173bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner llvm::TargetData td = llvm::TargetData::TargetData(&TheModule); 1174bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner int PointerWidth = td.getTypeSizeInBits(PtrTy); 1175bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner assert((PointerWidth == 32 || PointerWidth == 64) && 1176bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner "Can't yet handle exceptions if pointers are not 32 or 64 bits"); 11775dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Value *llvm_eh_exception = 11785dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.CGM.getIntrinsic(llvm::Intrinsic::eh_exception); 1179bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner llvm::Value *llvm_eh_selector = PointerWidth == 32 ? 1180bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner CGF.CGM.getIntrinsic(llvm::Intrinsic::eh_selector_i32) : 1181bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner CGF.CGM.getIntrinsic(llvm::Intrinsic::eh_selector_i64); 1182bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner llvm::Value *llvm_eh_typeid_for = PointerWidth == 32 ? 1183bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner CGF.CGM.getIntrinsic(llvm::Intrinsic::eh_typeid_for_i32) : 1184bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner CGF.CGM.getIntrinsic(llvm::Intrinsic::eh_typeid_for_i64); 11855dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 11865dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Exception object 11875dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Value *Exc = CGF.Builder.CreateCall(llvm_eh_exception, "exc"); 11885dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Value *RethrowPtr = CGF.CreateTempAlloca(Exc->getType(), "_rethrow"); 11895dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 11905dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::SmallVector<llvm::Value*, 8> ESelArgs; 11915dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::SmallVector<std::pair<const ParmVarDecl*, const Stmt*>, 8> Handlers; 11925dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 11935dc0867af17b3bd6f567897433853b2b4767446cChris Lattner ESelArgs.push_back(Exc); 11945dc0867af17b3bd6f567897433853b2b4767446cChris Lattner ESelArgs.push_back(Personality); 11955dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 11965dc0867af17b3bd6f567897433853b2b4767446cChris Lattner bool HasCatchAll = false; 11975dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Only @try blocks are allowed @catch blocks, but both can have @finally 11985dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (isTry) { 11995dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (const ObjCAtCatchStmt* CatchStmt = 12005dc0867af17b3bd6f567897433853b2b4767446cChris Lattner cast<ObjCAtTryStmt>(S).getCatchStmts()) { 12015dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 12025dc0867af17b3bd6f567897433853b2b4767446cChris Lattner for (; CatchStmt; CatchStmt = CatchStmt->getNextCatchStmt()) { 12035dc0867af17b3bd6f567897433853b2b4767446cChris Lattner const ParmVarDecl *CatchDecl = CatchStmt->getCatchParamDecl(); 12045dc0867af17b3bd6f567897433853b2b4767446cChris Lattner Handlers.push_back(std::make_pair(CatchDecl, CatchStmt->getCatchBody())); 12055dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 12065dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // @catch() and @catch(id) both catch any ObjC exception 12075dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (!CatchDecl || CGF.getContext().isObjCIdType(CatchDecl->getType()) 12085dc0867af17b3bd6f567897433853b2b4767446cChris Lattner || CatchDecl->getType()->isObjCQualifiedIdType()) { 12095dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Use i8* null here to signal this is a catch all, not a cleanup. 12105dc0867af17b3bd6f567897433853b2b4767446cChris Lattner ESelArgs.push_back(NULLPtr); 12115dc0867af17b3bd6f567897433853b2b4767446cChris Lattner HasCatchAll = true; 12125dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // No further catches after this one will ever by reached 12135dc0867af17b3bd6f567897433853b2b4767446cChris Lattner break; 12145dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 12155dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 12165dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // All other types should be Objective-C interface pointer types. 12175dc0867af17b3bd6f567897433853b2b4767446cChris Lattner const PointerType *PT = CatchDecl->getType()->getAsPointerType(); 12185dc0867af17b3bd6f567897433853b2b4767446cChris Lattner assert(PT && "Invalid @catch type."); 12195dc0867af17b3bd6f567897433853b2b4767446cChris Lattner const ObjCInterfaceType *IT = 12205dc0867af17b3bd6f567897433853b2b4767446cChris Lattner PT->getPointeeType()->getAsObjCInterfaceType(); 12215dc0867af17b3bd6f567897433853b2b4767446cChris Lattner assert(IT && "Invalid @catch type."); 1222bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner llvm::Value *EHType = 1223bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner MakeConstantString(IT->getDecl()->getNameAsString()); 12245dc0867af17b3bd6f567897433853b2b4767446cChris Lattner ESelArgs.push_back(EHType); 12255dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 12265dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 12275dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 12285dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 12295dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // We use a cleanup unless there was already a catch all. 12305dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (!HasCatchAll) { 12315dc0867af17b3bd6f567897433853b2b4767446cChris Lattner ESelArgs.push_back(llvm::ConstantInt::get(llvm::Type::Int32Ty, 0)); 12325dc0867af17b3bd6f567897433853b2b4767446cChris Lattner Handlers.push_back(std::make_pair((const ParmVarDecl*) 0, (const Stmt*) 0)); 12335dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 12345dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 12355dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Find which handler was matched. 1236bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner llvm::Value *ESelector = CGF.Builder.CreateCall(llvm_eh_selector, 12375dc0867af17b3bd6f567897433853b2b4767446cChris Lattner ESelArgs.begin(), ESelArgs.end(), "selector"); 12385dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 12395dc0867af17b3bd6f567897433853b2b4767446cChris Lattner for (unsigned i = 0, e = Handlers.size(); i != e; ++i) { 12405dc0867af17b3bd6f567897433853b2b4767446cChris Lattner const ParmVarDecl *CatchParam = Handlers[i].first; 12415dc0867af17b3bd6f567897433853b2b4767446cChris Lattner const Stmt *CatchBody = Handlers[i].second; 12425dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 12435dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *Next = 0; 12445dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 12455dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // The last handler always matches. 12465dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (i + 1 != e) { 12475dc0867af17b3bd6f567897433853b2b4767446cChris Lattner assert(CatchParam && "Only last handler can be a catch all."); 12485dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 12495dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Test whether this block matches the type for the selector and branch 12505dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // to Match if it does, or to the next BB if it doesn't. 12515dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *Match = CGF.createBasicBlock("match"); 12525dc0867af17b3bd6f567897433853b2b4767446cChris Lattner Next = CGF.createBasicBlock("catch.next"); 1253bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner llvm::Value *Id = CGF.Builder.CreateCall(llvm_eh_typeid_for, 12545dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateBitCast(ESelArgs[i+2], PtrTy)); 12555dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateCondBr(CGF.Builder.CreateICmpEQ(ESelector, Id), Match, 12565dc0867af17b3bd6f567897433853b2b4767446cChris Lattner Next); 12575dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 12585dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(Match); 12595dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 12605dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 12615dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (CatchBody) { 12625dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Value *ExcObject = CGF.Builder.CreateBitCast(Exc, 12635dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.ConvertType(CatchParam->getType())); 12645dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 12655dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Bind the catch parameter if it exists. 12665dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (CatchParam) { 12675dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // CatchParam is a ParmVarDecl because of the grammar 12685dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // construction used to handle this, but for codegen purposes 12695dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // we treat this as a local decl. 12705dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitLocalBlockVarDecl(*CatchParam); 12715dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateStore(ExcObject, CGF.GetAddrOfLocalVar(CatchParam)); 12725dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 12735dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 12745dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.ObjCEHValueStack.push_back(ExcObject); 12755dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitStmt(CatchBody); 12765dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.ObjCEHValueStack.pop_back(); 12775dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 12785dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBranchThroughCleanup(FinallyEnd); 12795dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 12805dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (Next) 12815dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(Next); 12825dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } else { 12835dc0867af17b3bd6f567897433853b2b4767446cChris Lattner assert(!Next && "catchup should be last handler."); 12845dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 12855dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateStore(Exc, RethrowPtr); 12865dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBranchThroughCleanup(FinallyRethrow); 12875dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 12885dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 12895dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CodeGenFunction::CleanupBlockInfo Info = CGF.PopCleanupBlock(); 12905dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 12915dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.setInvokeDest(PrevLandingPad); 12925dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 12935dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(FinallyBlock); 12945dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 12955dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (isTry) { 12965dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (const ObjCAtFinallyStmt* FinallyStmt = 12975dc0867af17b3bd6f567897433853b2b4767446cChris Lattner cast<ObjCAtTryStmt>(S).getFinallyStmt()) 12985dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitStmt(FinallyStmt->getFinallyBody()); 12995dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } else { 13005dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // TODO: Emit 'objc_sync_exit(expr)' as finally's sole statement for 13015dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // @synchronized. 13025dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 13035dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 13045dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (Info.SwitchBlock) 13055dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(Info.SwitchBlock); 13065dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (Info.EndBlock) 13075dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(Info.EndBlock); 13085dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 13095dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Branch around the rethrow code. 13105dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBranch(FinallyEnd); 13115dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 13125dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(FinallyRethrow); 13135dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateCall(RethrowFn, CGF.Builder.CreateLoad(RethrowPtr)); 13145dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateUnreachable(); 13155dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 13165dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(FinallyEnd); 13175dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 131864d5d6c5903157c521af496479d06dc26032d718Anders Carlsson} 131964d5d6c5903157c521af496479d06dc26032d718Anders Carlsson 132064d5d6c5903157c521af496479d06dc26032d718Anders Carlssonvoid CGObjCGNU::EmitThrowStmt(CodeGen::CodeGenFunction &CGF, 132149f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar const ObjCAtThrowStmt &S) { 13225dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Value *ExceptionAsObject; 13235dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 13245dc0867af17b3bd6f567897433853b2b4767446cChris Lattner std::vector<const llvm::Type*> Args(1, IdTy); 13255dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::FunctionType *FTy = 13265dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::FunctionType::get(llvm::Type::VoidTy, Args, false); 13275dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Value *ThrowFn = 13285dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGM.CreateRuntimeFunction(FTy, "objc_exception_throw"); 13295dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 13305dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (const Expr *ThrowExpr = S.getThrowExpr()) { 13315dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Value *Exception = CGF.EmitScalarExpr(ThrowExpr); 13325dc0867af17b3bd6f567897433853b2b4767446cChris Lattner ExceptionAsObject = 13335dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateBitCast(Exception, IdTy, "tmp"); 13345dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } else { 13355dc0867af17b3bd6f567897433853b2b4767446cChris Lattner assert((!CGF.ObjCEHValueStack.empty() && CGF.ObjCEHValueStack.back()) && 13365dc0867af17b3bd6f567897433853b2b4767446cChris Lattner "Unexpected rethrow outside @catch block."); 13375dc0867af17b3bd6f567897433853b2b4767446cChris Lattner ExceptionAsObject = CGF.ObjCEHValueStack.back(); 13385dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 13395dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 13405dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Note: This may have to be an invoke, if we want to support constructs like: 13415dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // @try { 13425dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // @throw(obj); 13435dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // } 13445dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // @catch(id) ... 13455dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // 13465dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // This is effectively turning @throw into an incredibly-expensive goto, but 13475dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // it may happen as a result of inlining followed by missed optimizations, or 13485dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // as a result of stupidity. 13495dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *UnwindBB = CGF.getInvokeDest(); 13505dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (!UnwindBB) { 13515dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateCall(ThrowFn, ExceptionAsObject); 13525dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateUnreachable(); 13535dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } else { 13545dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateInvoke(ThrowFn, UnwindBB, UnwindBB, &ExceptionAsObject, 13555dc0867af17b3bd6f567897433853b2b4767446cChris Lattner &ExceptionAsObject+1); 13565dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 13575dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Clear the insertion point to indicate we are in unreachable code. 13585dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.ClearInsertionPoint(); 135964d5d6c5903157c521af496479d06dc26032d718Anders Carlsson} 136064d5d6c5903157c521af496479d06dc26032d718Anders Carlsson 13613e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanianllvm::Value * CGObjCGNU::EmitObjCWeakRead(CodeGen::CodeGenFunction &CGF, 13626dc2317b59cb1180a59f6c283d96b7a5dfeb5307Fariborz Jahanian llvm::Value *AddrWeakObj) 13636dc2317b59cb1180a59f6c283d96b7a5dfeb5307Fariborz Jahanian{ 13646dc2317b59cb1180a59f6c283d96b7a5dfeb5307Fariborz Jahanian return 0; 13656dc2317b59cb1180a59f6c283d96b7a5dfeb5307Fariborz Jahanian} 13666dc2317b59cb1180a59f6c283d96b7a5dfeb5307Fariborz Jahanian 13673e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanianvoid CGObjCGNU::EmitObjCWeakAssign(CodeGen::CodeGenFunction &CGF, 13683e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian llvm::Value *src, llvm::Value *dst) 13693e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian{ 13703e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian return; 13713e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian} 13723e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian 137358626500527695865683d1d65053743de8770b60Fariborz Jahanianvoid CGObjCGNU::EmitObjCGlobalAssign(CodeGen::CodeGenFunction &CGF, 137458626500527695865683d1d65053743de8770b60Fariborz Jahanian llvm::Value *src, llvm::Value *dst) 137558626500527695865683d1d65053743de8770b60Fariborz Jahanian{ 137658626500527695865683d1d65053743de8770b60Fariborz Jahanian return; 137758626500527695865683d1d65053743de8770b60Fariborz Jahanian} 137858626500527695865683d1d65053743de8770b60Fariborz Jahanian 13797eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanianvoid CGObjCGNU::EmitObjCIvarAssign(CodeGen::CodeGenFunction &CGF, 13807eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanian llvm::Value *src, llvm::Value *dst) 13817eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanian{ 13827eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanian return; 13837eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanian} 13847eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanian 138558626500527695865683d1d65053743de8770b60Fariborz Jahanianvoid CGObjCGNU::EmitObjCStrongCastAssign(CodeGen::CodeGenFunction &CGF, 138658626500527695865683d1d65053743de8770b60Fariborz Jahanian llvm::Value *src, llvm::Value *dst) 138758626500527695865683d1d65053743de8770b60Fariborz Jahanian{ 138858626500527695865683d1d65053743de8770b60Fariborz Jahanian return; 138958626500527695865683d1d65053743de8770b60Fariborz Jahanian} 139058626500527695865683d1d65053743de8770b60Fariborz Jahanian 1391598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz JahanianLValue CGObjCGNU::EmitObjCValueForIvar(CodeGen::CodeGenFunction &CGF, 1392598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian QualType ObjectTy, 1393598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian llvm::Value *BaseValue, 1394598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian const ObjCIvarDecl *Ivar, 1395598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian unsigned CVRQualifiers) { 1396525c9b7baeeff022127cd1b167579f3bda73b3edDaniel Dunbar const ObjCInterfaceDecl *ID = ObjectTy->getAsObjCInterfaceType()->getDecl(); 13979777687562c338601c2f17906e65e1c1a0aad96fDaniel Dunbar return EmitValueForIvarAtOffset(CGF, ID, BaseValue, Ivar, CVRQualifiers, 13989777687562c338601c2f17906e65e1c1a0aad96fDaniel Dunbar EmitIvarOffset(CGF, ID, Ivar)); 13990bb20361a321593887f067515dd04cf109f4c74aFariborz Jahanian} 14000bb20361a321593887f067515dd04cf109f4c74aFariborz Jahanian 1401f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanianllvm::Value *CGObjCGNU::EmitIvarOffset(CodeGen::CodeGenFunction &CGF, 14022a03192a02dbf4fdff438d1e658356bde871aba4Daniel Dunbar const ObjCInterfaceDecl *Interface, 1403f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian const ObjCIvarDecl *Ivar) { 14049777687562c338601c2f17906e65e1c1a0aad96fDaniel Dunbar uint64_t Offset = ComputeIvarBaseOffset(CGF.CGM, Interface, Ivar); 140584ad77a8f83121713ea69d8002d1fd19565f87abDaniel Dunbar return llvm::ConstantInt::get(LongTy, Offset); 1406f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian} 1407f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian 1408c17a4d3b16a2624a76de5d7508805534545bd3bfDaniel DunbarCodeGen::CGObjCRuntime *CodeGen::CreateGNUObjCRuntime(CodeGen::CodeGenModule &CGM){ 1409dce1406f1c1f572cfd61c494546572d63461c741Chris Lattner return new CGObjCGNU(CGM); 14100f984268b05edab2cc555a427c441baa9c252658Chris Lattner} 1411