CGObjCGNU.cpp revision 42ba04a072c69d84a6660e4498215086662910ac
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" 2419cc4abea06a9b49e0e16a50d335c064cd723572Anders Carlsson#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; 449cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanianstatic const int NonFragileRuntimeVersion = 9; 4520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovstatic const int ProtocolVersion = 2; 46d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanianstatic const int NonFragileProtocolVersion = 3; 470f984268b05edab2cc555a427c441baa9c252658Chris Lattner 480f984268b05edab2cc555a427c441baa9c252658Chris Lattnernamespace { 49dce1406f1c1f572cfd61c494546572d63461c741Chris Lattnerclass CGObjCGNU : public CodeGen::CGObjCRuntime { 500f984268b05edab2cc555a427c441baa9c252658Chris Lattnerprivate: 51dce1406f1c1f572cfd61c494546572d63461c741Chris Lattner CodeGen::CodeGenModule &CGM; 520f984268b05edab2cc555a427c441baa9c252658Chris Lattner llvm::Module &TheModule; 53e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::PointerType *SelectorTy; 54d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian const llvm::IntegerType *Int8Ty; 55e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::PointerType *PtrToInt8Ty; 56b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian const llvm::FunctionType *IMPTy; 57e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::PointerType *IdTy; 58ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall const llvm::PointerType *PtrToIdTy; 59ead608af31b6c9abeae1ca6d0b75094dac4641c0John McCall CanQualType ASTIdTy; 60e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::IntegerType *IntTy; 61e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::PointerType *PtrTy; 62e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::IntegerType *LongTy; 63e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::PointerType *PtrToIntTy; 645efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar llvm::GlobalAlias *ClassPtrAlias; 655efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar llvm::GlobalAlias *MetaClassPtrAlias; 6620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Classes; 6720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Categories; 6820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> ConstantStrings; 6948272a078e54d501cb05edd797c54b8e82ceb520David Chisnall llvm::StringMap<llvm::Constant*> ObjCStrings; 7020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Function *LoadFunction; 7120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StringMap<llvm::Constant*> ExistingProtocols; 7220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov typedef std::pair<std::string, std::string> TypedSelector; 7320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::map<TypedSelector, llvm::GlobalAlias*> TypedSelectors; 7420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StringMap<llvm::GlobalAlias*> UntypedSelectors; 75ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // Selectors that we don't emit in GC mode 76ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall Selector RetainSel, ReleaseSel, AutoreleaseSel; 77ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // Functions used for GC. 78ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall llvm::Constant *IvarAssignFn, *StrongCastAssignFn, *MemMoveFn, *WeakReadFn, 79ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall *WeakAssignFn, *GlobalAssignFn; 8020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Some zeros used for GEPs in lots of places. 8120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Zeros[2]; 8220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *NULLPtr; 83a1cf15f4680e5cf39e72e28c5ea854fcba792e84Owen Anderson llvm::LLVMContext &VMContext; 8420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovprivate: 8520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateIvarList( 8620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarNames, 8720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarTypes, 8820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarOffsets); 8920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateMethodList(const std::string &ClassName, 9020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const std::string &CategoryName, 911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const llvm::SmallVectorImpl<Selector> &MethodSels, 921eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const llvm::SmallVectorImpl<llvm::Constant *> &MethodTypes, 9320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov bool isClassMethodList); 94f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::Constant *GenerateEmptyProtocol(const std::string &ProtocolName); 95d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *GeneratePropertyList(const ObjCImplementationDecl *OID, 96d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::SmallVectorImpl<Selector> &InstanceMethodSels, 97d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::SmallVectorImpl<llvm::Constant*> &InstanceMethodTypes); 9820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateProtocolList( 9920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<std::string> &Protocols); 100d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // To ensure that all protocols are seen by the runtime, we add a category on 101d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // a class defined in the runtime, declaring no methods, but adopting the 102d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // protocols. 103d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian void GenerateProtocolHolderCategory(void); 10420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateClassStructure( 10520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MetaClass, 10620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SuperClass, 10720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov unsigned info, 108d002cc6fc5b72bf00e3b7b4571ccf0f23c789b4bChris Lattner const char *Name, 10920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Version, 11020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *InstanceSize, 11120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *IVars, 11220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Methods, 113d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *Protocols, 114d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *IvarOffsets, 115d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *Properties); 11620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateProtocolMethodList( 11720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &MethodNames, 11820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &MethodTypes); 11920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MakeConstantString(const std::string &Str, const std::string 12020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov &Name=""); 121d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *ExportUniqueString(const std::string &Str, const std::string 122d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian prefix); 12320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MakeGlobal(const llvm::StructType *Ty, 12474a8bbf0654fbbf37be04b240b5bbe591f37f242Benjamin Kramer std::vector<llvm::Constant*> &V, llvm::StringRef Name="", 12541d63ed274d1bf7ba7459f218c8f6a385fc5c6d6David Chisnall llvm::GlobalValue::LinkageTypes linkage=llvm::GlobalValue::InternalLinkage); 12620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MakeGlobal(const llvm::ArrayType *Ty, 12774a8bbf0654fbbf37be04b240b5bbe591f37f242Benjamin Kramer std::vector<llvm::Constant*> &V, llvm::StringRef Name="", 12841d63ed274d1bf7ba7459f218c8f6a385fc5c6d6David Chisnall llvm::GlobalValue::LinkageTypes linkage=llvm::GlobalValue::InternalLinkage); 1299cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian llvm::GlobalVariable *ObjCIvarOffsetVariable(const ObjCInterfaceDecl *ID, 1309cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCIvarDecl *Ivar); 1312a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner void EmitClassRef(const std::string &className); 132ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall llvm::Value* EnforceType(CGBuilderTy B, llvm::Value *V, const llvm::Type *Ty){ 133ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall if (V->getType() == Ty) return V; 134ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall return B.CreateBitCast(V, Ty); 135ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 1360f984268b05edab2cc555a427c441baa9c252658Chris Lattnerpublic: 137dce1406f1c1f572cfd61c494546572d63461c741Chris Lattner CGObjCGNU(CodeGen::CodeGenModule &cgm); 1380d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall virtual llvm::Constant *GenerateConstantString(const StringLiteral *); 1391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump virtual CodeGen::RValue 1408f2926b73ed635afecd020da787af6a837601a2bDaniel Dunbar GenerateMessageSend(CodeGen::CodeGenFunction &CGF, 1417f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar QualType ResultType, 1427f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar Selector Sel, 143f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar llvm::Value *Receiver, 14419cd87eb5fb3c197e631ce08fd52c446c4d4e8f1Daniel Dunbar bool IsClassMessage, 145df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian const CallArgList &CallArgs, 146df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian const ObjCMethodDecl *Method); 1471eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump virtual CodeGen::RValue 1488f2926b73ed635afecd020da787af6a837601a2bDaniel Dunbar GenerateMessageSendSuper(CodeGen::CodeGenFunction &CGF, 1497f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar QualType ResultType, 1507f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar Selector Sel, 151f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar const ObjCInterfaceDecl *Class, 1527ce77920a35060f1c8dd72e541e42ce296ccd168Fariborz Jahanian bool isCategoryImpl, 153f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar llvm::Value *Receiver, 15419cd87eb5fb3c197e631ce08fd52c446c4d4e8f1Daniel Dunbar bool IsClassMessage, 155d6c93d703541c992e06eb9a59a2d826a30da65b2Daniel Dunbar const CallArgList &CallArgs, 156d6c93d703541c992e06eb9a59a2d826a30da65b2Daniel Dunbar const ObjCMethodDecl *Method); 15745d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbar virtual llvm::Value *GetClass(CGBuilderTy &Builder, 158ddb2a3d55a24a1dbdf9152621642d9a4b4fc2f61Daniel Dunbar const ObjCInterfaceDecl *OID); 1596d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbar virtual llvm::Value *GetSelector(CGBuilderTy &Builder, Selector Sel); 1606d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbar virtual llvm::Value *GetSelector(CGBuilderTy &Builder, const ObjCMethodDecl 1616d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbar *Method); 1621eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump virtual llvm::Function *GenerateMethod(const ObjCMethodDecl *OMD, 164679a502d462ef819e6175b58e255ca3f3391e7cfFariborz Jahanian const ObjCContainerDecl *CD); 1657ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar virtual void GenerateCategory(const ObjCCategoryImplDecl *CMD); 1667ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar virtual void GenerateClass(const ObjCImplementationDecl *ClassDecl); 16745d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbar virtual llvm::Value *GenerateProtocolRef(CGBuilderTy &Builder, 168af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar const ObjCProtocolDecl *PD); 169af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar virtual void GenerateProtocol(const ObjCProtocolDecl *PD); 17020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov virtual llvm::Function *ModuleInitFunction(); 17149f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar virtual llvm::Function *GetPropertyGetFunction(); 17249f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar virtual llvm::Function *GetPropertySetFunction(); 173309a4368cd299cff30ab22709e2b772cf8059e45Daniel Dunbar virtual llvm::Constant *EnumerationMutationFunction(); 1741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 175bd71be4683c195260d5245118b1e13e6b2e20504Fariborz Jahanian virtual void EmitTryOrSynchronizedStmt(CodeGen::CodeGenFunction &CGF, 176bd71be4683c195260d5245118b1e13e6b2e20504Fariborz Jahanian const Stmt &S); 17764d5d6c5903157c521af496479d06dc26032d718Anders Carlsson virtual void EmitThrowStmt(CodeGen::CodeGenFunction &CGF, 17864d5d6c5903157c521af496479d06dc26032d718Anders Carlsson const ObjCAtThrowStmt &S); 1793e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian virtual llvm::Value * EmitObjCWeakRead(CodeGen::CodeGenFunction &CGF, 1806dc2317b59cb1180a59f6c283d96b7a5dfeb5307Fariborz Jahanian llvm::Value *AddrWeakObj); 1813e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian virtual void EmitObjCWeakAssign(CodeGen::CodeGenFunction &CGF, 1823e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian llvm::Value *src, llvm::Value *dst); 18358626500527695865683d1d65053743de8770b60Fariborz Jahanian virtual void EmitObjCGlobalAssign(CodeGen::CodeGenFunction &CGF, 18458626500527695865683d1d65053743de8770b60Fariborz Jahanian llvm::Value *src, llvm::Value *dest); 1857eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanian virtual void EmitObjCIvarAssign(CodeGen::CodeGenFunction &CGF, 1866c7a1f364796ce1acb988714e9e42076d1ce332eFariborz Jahanian llvm::Value *src, llvm::Value *dest, 1876c7a1f364796ce1acb988714e9e42076d1ce332eFariborz Jahanian llvm::Value *ivarOffset); 18858626500527695865683d1d65053743de8770b60Fariborz Jahanian virtual void EmitObjCStrongCastAssign(CodeGen::CodeGenFunction &CGF, 18958626500527695865683d1d65053743de8770b60Fariborz Jahanian llvm::Value *src, llvm::Value *dest); 190082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian virtual void EmitGCMemmoveCollectable(CodeGen::CodeGenFunction &CGF, 1911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *DestPtr, 192082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian llvm::Value *SrcPtr, 19308c321380fff07d476a19daab6d29522c046cd49Fariborz Jahanian QualType Ty); 194598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian virtual LValue EmitObjCValueForIvar(CodeGen::CodeGenFunction &CGF, 195598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian QualType ObjectTy, 196598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian llvm::Value *BaseValue, 197598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian const ObjCIvarDecl *Ivar, 198598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian unsigned CVRQualifiers); 199f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian virtual llvm::Value *EmitIvarOffset(CodeGen::CodeGenFunction &CGF, 2002a03192a02dbf4fdff438d1e658356bde871aba4Daniel Dunbar const ObjCInterfaceDecl *Interface, 201f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian const ObjCIvarDecl *Ivar); 2020f984268b05edab2cc555a427c441baa9c252658Chris Lattner}; 2030f984268b05edab2cc555a427c441baa9c252658Chris Lattner} // end anonymous namespace 2040f984268b05edab2cc555a427c441baa9c252658Chris Lattner 20520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 2062a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner/// Emits a reference to a dummy variable which is emitted with each class. 2072a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner/// This ensures that a linker error will be generated when trying to link 2082a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner/// together modules where a referenced class is not defined. 209bb1c8600218b3244340331165fc7cba7bf227655Mike Stumpvoid CGObjCGNU::EmitClassRef(const std::string &className) { 2102a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner std::string symbolRef = "__objc_class_ref_" + className; 2112a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner // Don't emit two copies of the same symbol 212bb1c8600218b3244340331165fc7cba7bf227655Mike Stump if (TheModule.getGlobalVariable(symbolRef)) 213bb1c8600218b3244340331165fc7cba7bf227655Mike Stump return; 2142a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner std::string symbolName = "__objc_class_name_" + className; 2152a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner llvm::GlobalVariable *ClassSymbol = TheModule.getGlobalVariable(symbolName); 2162a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner if (!ClassSymbol) { 2171c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson ClassSymbol = new llvm::GlobalVariable(TheModule, LongTy, false, 2181c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson llvm::GlobalValue::ExternalLinkage, 0, symbolName); 2192a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner } 2201c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson new llvm::GlobalVariable(TheModule, ClassSymbol->getType(), true, 221f35271b8677a5f31498b89587b1da42a06dd46fdChris Lattner llvm::GlobalValue::WeakAnyLinkage, ClassSymbol, symbolRef); 2222a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner} 22320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 22420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovstatic std::string SymbolNameForClass(const std::string &ClassName) { 2252a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner return "_OBJC_CLASS_" + ClassName; 22620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 22720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 228d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanianstatic std::string SymbolNameForMethod(const std::string &ClassName, const 229d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::string &CategoryName, const std::string &MethodName, bool isClassMethod) 230d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian{ 231d346736dfe5ef584a2d0c9d27d217408ee394b9bDavid Chisnall std::string MethodNameColonStripped = MethodName; 232d346736dfe5ef584a2d0c9d27d217408ee394b9bDavid Chisnall std::replace(MethodNameColonStripped.begin(), MethodNameColonStripped.end(), 233d346736dfe5ef584a2d0c9d27d217408ee394b9bDavid Chisnall ':', '_'); 234d346736dfe5ef584a2d0c9d27d217408ee394b9bDavid Chisnall return std::string(isClassMethod ? "_c_" : "_i_") + ClassName + "_" + 235d346736dfe5ef584a2d0c9d27d217408ee394b9bDavid Chisnall CategoryName + "_" + MethodNameColonStripped; 23620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 23720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 238dce1406f1c1f572cfd61c494546572d63461c741Chris LattnerCGObjCGNU::CGObjCGNU(CodeGen::CodeGenModule &cgm) 2395efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar : CGM(cgm), TheModule(CGM.getModule()), ClassPtrAlias(0), 240a1cf15f4680e5cf39e72e28c5ea854fcba792e84Owen Anderson MetaClassPtrAlias(0), VMContext(cgm.getLLVMContext()) { 241e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner IntTy = cast<llvm::IntegerType>( 242e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner CGM.getTypes().ConvertType(CGM.getContext().IntTy)); 243e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner LongTy = cast<llvm::IntegerType>( 244e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner CGM.getTypes().ConvertType(CGM.getContext().LongTy)); 2451eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 246d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Int8Ty = llvm::Type::getInt8Ty(VMContext); 247d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // C string type. Used in lots of places. 248d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrToInt8Ty = llvm::PointerType::getUnqual(Int8Ty); 249d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 2504a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Zeros[0] = llvm::ConstantInt::get(LongTy, 0); 25120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Zeros[1] = Zeros[0]; 252d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian NULLPtr = llvm::ConstantPointerNull::get(PtrToInt8Ty); 253391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner // Get the selector Type. 2540d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall QualType selTy = CGM.getContext().getObjCSelType(); 2550d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall if (QualType() == selTy) { 2560d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall SelectorTy = PtrToInt8Ty; 2570d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall } else { 2580d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall SelectorTy = cast<llvm::PointerType>(CGM.getTypes().ConvertType(selTy)); 2590d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall } 260e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner 26196e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson PtrToIntTy = llvm::PointerType::getUnqual(IntTy); 262391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner PtrTy = PtrToInt8Ty; 2631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 264391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner // Object type 265ead608af31b6c9abeae1ca6d0b75094dac4641c0John McCall ASTIdTy = CGM.getContext().getCanonicalType(CGM.getContext().getObjCIdType()); 2660d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall if (QualType() == ASTIdTy) { 2670d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall IdTy = PtrToInt8Ty; 2680d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall } else { 2690d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall IdTy = cast<llvm::PointerType>(CGM.getTypes().ConvertType(ASTIdTy)); 2700d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall } 271ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall PtrToIdTy = llvm::PointerType::getUnqual(IdTy); 2721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 273391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner // IMP type 274391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner std::vector<const llvm::Type*> IMPArgs; 275391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner IMPArgs.push_back(IdTy); 276391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner IMPArgs.push_back(SelectorTy); 27796e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson IMPTy = llvm::FunctionType::get(IdTy, IMPArgs, true); 278ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall 279ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall if (CGM.getLangOptions().getGCMode() != LangOptions::NonGC) { 280ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // Get selectors needed in GC mode 281ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall RetainSel = GetNullarySelector("retain", CGM.getContext()); 282ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall ReleaseSel = GetNullarySelector("release", CGM.getContext()); 283ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall AutoreleaseSel = GetNullarySelector("autorelease", CGM.getContext()); 284ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall 285ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // Get functions needed in GC mode 286ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall 287ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // id objc_assign_ivar(id, id, ptrdiff_t); 288ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall std::vector<const llvm::Type*> Args(1, IdTy); 289ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall Args.push_back(PtrToIdTy); 290ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // FIXME: ptrdiff_t 291ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall Args.push_back(LongTy); 292ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall llvm::FunctionType *FTy = llvm::FunctionType::get(IdTy, Args, false); 293ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall IvarAssignFn = CGM.CreateRuntimeFunction(FTy, "objc_assign_ivar"); 294ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // id objc_assign_strongCast (id, id*) 295ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall Args.pop_back(); 296ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall FTy = llvm::FunctionType::get(IdTy, Args, false); 297ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall StrongCastAssignFn = 298ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall CGM.CreateRuntimeFunction(FTy, "objc_assign_strongCast"); 299ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // id objc_assign_global(id, id*); 300ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall FTy = llvm::FunctionType::get(IdTy, Args, false); 301ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall GlobalAssignFn = CGM.CreateRuntimeFunction(FTy, "objc_assign_global"); 302ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // id objc_assign_weak(id, id*); 303ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall FTy = llvm::FunctionType::get(IdTy, Args, false); 304ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall WeakAssignFn = CGM.CreateRuntimeFunction(FTy, "objc_assign_weak"); 305ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // id objc_read_weak(id*); 306ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall Args.clear(); 307ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall Args.push_back(PtrToIdTy); 308ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall FTy = llvm::FunctionType::get(IdTy, Args, false); 309ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall WeakReadFn = CGM.CreateRuntimeFunction(FTy, "objc_read_weak"); 310ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // void *objc_memmove_collectable(void*, void *, size_t); 311ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall Args.clear(); 312ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall Args.push_back(PtrToInt8Ty); 313ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall Args.push_back(PtrToInt8Ty); 314ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // FIXME: size_t 315ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall Args.push_back(LongTy); 316ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall FTy = llvm::FunctionType::get(IdTy, Args, false); 317ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall MemMoveFn = CGM.CreateRuntimeFunction(FTy, "objc_memmove_collectable"); 318ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 31920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 320bb1c8600218b3244340331165fc7cba7bf227655Mike Stump 32120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// This has to perform the lookup every time, since posing and related 32220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// techniques can modify the name -> class mapping. 32345d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbarllvm::Value *CGObjCGNU::GetClass(CGBuilderTy &Builder, 324ddb2a3d55a24a1dbdf9152621642d9a4b4fc2f61Daniel Dunbar const ObjCInterfaceDecl *OID) { 325d9d22dd9c94618490dbffb0e2caf222530ca39d3Chris Lattner llvm::Value *ClassName = CGM.GetAddrOfConstantCString(OID->getNameAsString()); 32641d63ed274d1bf7ba7459f218c8f6a385fc5c6d6David Chisnall // With the incompatible ABI, this will need to be replaced with a direct 32741d63ed274d1bf7ba7459f218c8f6a385fc5c6d6David Chisnall // reference to the class symbol. For the compatible nonfragile ABI we are 32841d63ed274d1bf7ba7459f218c8f6a385fc5c6d6David Chisnall // still performing this lookup at run time but emitting the symbol for the 32941d63ed274d1bf7ba7459f218c8f6a385fc5c6d6David Chisnall // class externally so that we can make the switch later. 3302a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner EmitClassRef(OID->getNameAsString()); 331ddb2a3d55a24a1dbdf9152621642d9a4b4fc2f61Daniel Dunbar ClassName = Builder.CreateStructGEP(ClassName, 0); 332ddb2a3d55a24a1dbdf9152621642d9a4b4fc2f61Daniel Dunbar 33326c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian std::vector<const llvm::Type*> Params(1, PtrToInt8Ty); 33420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ClassLookupFn = 33596e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson CGM.CreateRuntimeFunction(llvm::FunctionType::get(IdTy, 33626c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian Params, 33726c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian true), 33826c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian "objc_lookup_class"); 33920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return Builder.CreateCall(ClassLookupFn, ClassName); 340391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner} 341391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner 3426d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbarllvm::Value *CGObjCGNU::GetSelector(CGBuilderTy &Builder, Selector Sel) { 343077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner llvm::GlobalAlias *&US = UntypedSelectors[Sel.getAsString()]; 3448e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner if (US == 0) 3456d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbar US = new llvm::GlobalAlias(llvm::PointerType::getUnqual(SelectorTy), 3460f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall llvm::GlobalValue::PrivateLinkage, 3470f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall ".objc_untyped_selector_alias"+Sel.getAsString(), 3488e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner NULL, &TheModule); 3491eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3506d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbar return Builder.CreateLoad(US); 351df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian} 352df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian 3536d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbarllvm::Value *CGObjCGNU::GetSelector(CGBuilderTy &Builder, const ObjCMethodDecl 354df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian *Method) { 355df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian 356df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian std::string SelName = Method->getSelector().getAsString(); 357df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian std::string SelTypes; 358df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian CGM.getContext().getObjCEncodingForMethodDecl(Method, SelTypes); 359df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian // Typed selectors 360df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian TypedSelector Selector = TypedSelector(SelName, 361df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian SelTypes); 362df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian 363df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian // If it's already cached, return it. 364bb1c8600218b3244340331165fc7cba7bf227655Mike Stump if (TypedSelectors[Selector]) { 3656d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbar return Builder.CreateLoad(TypedSelectors[Selector]); 366df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian } 367df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian 368df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian // If it isn't, cache it. 369df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian llvm::GlobalAlias *Sel = new llvm::GlobalAlias( 3706d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbar llvm::PointerType::getUnqual(SelectorTy), 3710f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall llvm::GlobalValue::PrivateLinkage, ".objc_selector_alias" + SelName, 372df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian NULL, &TheModule); 373df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian TypedSelectors[Selector] = Sel; 374df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian 3756d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbar return Builder.CreateLoad(Sel); 3768e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner} 3778e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner 3785e7dcc62e4637591959f9c372f6c5258d0d263e0Chris Lattnerllvm::Constant *CGObjCGNU::MakeConstantString(const std::string &Str, 3795e7dcc62e4637591959f9c372f6c5258d0d263e0Chris Lattner const std::string &Name) { 3808a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::Constant *ConstStr = CGM.GetAddrOfConstantCString(Str, Name.c_str()); 3813c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson return llvm::ConstantExpr::getGetElementPtr(ConstStr, Zeros, 2); 38220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 383d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanianllvm::Constant *CGObjCGNU::ExportUniqueString(const std::string &Str, 384d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian const std::string prefix) { 385d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::string name = prefix + Str; 386d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *ConstStr = TheModule.getGlobalVariable(name); 387d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if (!ConstStr) { 388d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *value = llvm::ConstantArray::get(VMContext, Str, true); 389d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ConstStr = new llvm::GlobalVariable(TheModule, value->getType(), true, 390d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::GlobalValue::LinkOnceODRLinkage, value, prefix + Str); 391d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 392d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian return llvm::ConstantExpr::getGetElementPtr(ConstStr, Zeros, 2); 393d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian} 394bb1c8600218b3244340331165fc7cba7bf227655Mike Stump 39520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::MakeGlobal(const llvm::StructType *Ty, 39674a8bbf0654fbbf37be04b240b5bbe591f37f242Benjamin Kramer std::vector<llvm::Constant*> &V, llvm::StringRef Name, 39741d63ed274d1bf7ba7459f218c8f6a385fc5c6d6David Chisnall llvm::GlobalValue::LinkageTypes linkage) { 39808e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson llvm::Constant *C = llvm::ConstantStruct::get(Ty, V); 3991c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson return new llvm::GlobalVariable(TheModule, Ty, false, 4001c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson llvm::GlobalValue::InternalLinkage, C, Name); 40120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 402bb1c8600218b3244340331165fc7cba7bf227655Mike Stump 40320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::MakeGlobal(const llvm::ArrayType *Ty, 40474a8bbf0654fbbf37be04b240b5bbe591f37f242Benjamin Kramer std::vector<llvm::Constant*> &V, llvm::StringRef Name, 40541d63ed274d1bf7ba7459f218c8f6a385fc5c6d6David Chisnall llvm::GlobalValue::LinkageTypes linkage) { 4067db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson llvm::Constant *C = llvm::ConstantArray::get(Ty, V); 4071c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson return new llvm::GlobalVariable(TheModule, Ty, false, 408bb1c8600218b3244340331165fc7cba7bf227655Mike Stump llvm::GlobalValue::InternalLinkage, C, Name); 40920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 41020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 41120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// Generate an NSConstantString object. 4120d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnallllvm::Constant *CGObjCGNU::GenerateConstantString(const StringLiteral *SL) { 41348272a078e54d501cb05edd797c54b8e82ceb520David Chisnall 4140d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall std::string Str(SL->getStrData(), SL->getByteLength()); 4150d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall 41648272a078e54d501cb05edd797c54b8e82ceb520David Chisnall // Look for an existing one 41748272a078e54d501cb05edd797c54b8e82ceb520David Chisnall llvm::StringMap<llvm::Constant*>::iterator old = ObjCStrings.find(Str); 41848272a078e54d501cb05edd797c54b8e82ceb520David Chisnall if (old != ObjCStrings.end()) 41948272a078e54d501cb05edd797c54b8e82ceb520David Chisnall return old->getValue(); 42048272a078e54d501cb05edd797c54b8e82ceb520David Chisnall 42120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Ivars; 42220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Ivars.push_back(NULLPtr); 42313fd7e5111032f54b538dd66d035b0ccc1f82467Chris Lattner Ivars.push_back(MakeConstantString(Str)); 4244a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Ivars.push_back(llvm::ConstantInt::get(IntTy, Str.size())); 42520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ObjCStr = MakeGlobal( 42647a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType::get(VMContext, PtrToInt8Ty, PtrToInt8Ty, IntTy, NULL), 42720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Ivars, ".objc_str"); 42848272a078e54d501cb05edd797c54b8e82ceb520David Chisnall ObjCStr = llvm::ConstantExpr::getBitCast(ObjCStr, PtrToInt8Ty); 42948272a078e54d501cb05edd797c54b8e82ceb520David Chisnall ObjCStrings[Str] = ObjCStr; 43048272a078e54d501cb05edd797c54b8e82ceb520David Chisnall ConstantStrings.push_back(ObjCStr); 43120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return ObjCStr; 43220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 43320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 43420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov///Generates a message send where the super is the receiver. This is a message 43520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov///send to self with special delivery semantics indicating which class's method 43620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov///should be called. 4378f2926b73ed635afecd020da787af6a837601a2bDaniel DunbarCodeGen::RValue 4388f2926b73ed635afecd020da787af6a837601a2bDaniel DunbarCGObjCGNU::GenerateMessageSendSuper(CodeGen::CodeGenFunction &CGF, 4397f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar QualType ResultType, 4407f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar Selector Sel, 441f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar const ObjCInterfaceDecl *Class, 4427ce77920a35060f1c8dd72e541e42ce296ccd168Fariborz Jahanian bool isCategoryImpl, 443f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar llvm::Value *Receiver, 44419cd87eb5fb3c197e631ce08fd52c446c4d4e8f1Daniel Dunbar bool IsClassMessage, 445d6c93d703541c992e06eb9a59a2d826a30da65b2Daniel Dunbar const CallArgList &CallArgs, 446d6c93d703541c992e06eb9a59a2d826a30da65b2Daniel Dunbar const ObjCMethodDecl *Method) { 447ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall if (CGM.getLangOptions().getGCMode() != LangOptions::NonGC) { 448ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall if (Sel == RetainSel || Sel == AutoreleaseSel) { 449ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall return RValue::get(Receiver); 450ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 451ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall if (Sel == ReleaseSel) { 452ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall return RValue::get(0); 453ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 454ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 455b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian llvm::Value *cmd = GetSelector(CGF.Builder, Sel); 456b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 457b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CallArgList ActualArgs; 458b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 459b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian ActualArgs.push_back( 4600f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall std::make_pair(RValue::get(CGF.Builder.CreateBitCast(Receiver, IdTy)), 4610f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall ASTIdTy)); 462b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian ActualArgs.push_back(std::make_pair(RValue::get(cmd), 463b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CGF.getContext().getObjCSelType())); 464b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian ActualArgs.insert(ActualArgs.end(), CallArgs.begin(), CallArgs.end()); 465b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 466b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CodeGenTypes &Types = CGM.getTypes(); 46704a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall const CGFunctionInfo &FnInfo = Types.getFunctionInfo(ResultType, ActualArgs, 46804a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall CC_Default, false); 4696793966aa221764f579cc8436bd641e1ec339c6dDaniel Dunbar const llvm::FunctionType *impType = 4706793966aa221764f579cc8436bd641e1ec339c6dDaniel Dunbar Types.GetFunctionType(FnInfo, Method ? Method->isVariadic() : false); 471b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 4725efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar llvm::Value *ReceiverClass = 0; 47348e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (isCategoryImpl) { 47448e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner llvm::Constant *classLookupFunction = 0; 47548e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner std::vector<const llvm::Type*> Params; 47648e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner Params.push_back(PtrTy); 47748e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (IsClassMessage) { 47896e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson classLookupFunction = CGM.CreateRuntimeFunction(llvm::FunctionType::get( 47948e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner IdTy, Params, true), "objc_get_meta_class"); 48048e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner } else { 48196e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson classLookupFunction = CGM.CreateRuntimeFunction(llvm::FunctionType::get( 48248e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner IdTy, Params, true), "objc_get_class"); 4835efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } 48448e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner ReceiverClass = CGF.Builder.CreateCall(classLookupFunction, 48548e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner MakeConstantString(Class->getNameAsString())); 4865efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } else { 48748e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner // Set up global aliases for the metaclass or class pointer if they do not 48848e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner // already exist. These will are forward-references which will be set to 489bb1c8600218b3244340331165fc7cba7bf227655Mike Stump // pointers to the class and metaclass structure created for the runtime 490bb1c8600218b3244340331165fc7cba7bf227655Mike Stump // load function. To send a message to super, we look up the value of the 49148e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner // super_class pointer from either the class or metaclass structure. 49248e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (IsClassMessage) { 49348e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (!MetaClassPtrAlias) { 49448e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner MetaClassPtrAlias = new llvm::GlobalAlias(IdTy, 49548e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner llvm::GlobalValue::InternalLinkage, ".objc_metaclass_ref" + 49648e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner Class->getNameAsString(), NULL, &TheModule); 49748e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner } 49848e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner ReceiverClass = MetaClassPtrAlias; 49948e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner } else { 50048e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (!ClassPtrAlias) { 50148e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner ClassPtrAlias = new llvm::GlobalAlias(IdTy, 50248e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner llvm::GlobalValue::InternalLinkage, ".objc_class_ref" + 50348e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner Class->getNameAsString(), NULL, &TheModule); 50448e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner } 50548e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner ReceiverClass = ClassPtrAlias; 5065efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } 50771238f67c5df13eef19450d66b7a7ab28377192aChris Lattner } 5085efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar // Cast the pointer to a simplified version of the class structure 5091eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump ReceiverClass = CGF.Builder.CreateBitCast(ReceiverClass, 51096e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual( 51147a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType::get(VMContext, IdTy, IdTy, NULL))); 5125efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar // Get the superclass pointer 5135efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar ReceiverClass = CGF.Builder.CreateStructGEP(ReceiverClass, 1); 5145efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar // Load the superclass pointer 5155efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar ReceiverClass = CGF.Builder.CreateLoad(ReceiverClass); 51620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Construct the structure used to look up the IMP 51747a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType *ObjCSuperTy = llvm::StructType::get(VMContext, 51847a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson Receiver->getType(), IdTy, NULL); 5198f2926b73ed635afecd020da787af6a837601a2bDaniel Dunbar llvm::Value *ObjCSuper = CGF.Builder.CreateAlloca(ObjCSuperTy); 520b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 5218f2926b73ed635afecd020da787af6a837601a2bDaniel Dunbar CGF.Builder.CreateStore(Receiver, CGF.Builder.CreateStructGEP(ObjCSuper, 0)); 5225efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar CGF.Builder.CreateStore(ReceiverClass, 5235efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar CGF.Builder.CreateStructGEP(ObjCSuper, 1)); 52420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 52520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Get the IMP 52626c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian std::vector<const llvm::Type*> Params; 52796e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson Params.push_back(llvm::PointerType::getUnqual(ObjCSuperTy)); 52826c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian Params.push_back(SelectorTy); 5291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Constant *lookupFunction = 53096e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson CGM.CreateRuntimeFunction(llvm::FunctionType::get( 53196e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(impType), Params, true), 53226c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian "objc_msg_lookup_super"); 53326c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian 53420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Value *lookupArgs[] = {ObjCSuper, cmd}; 5358f2926b73ed635afecd020da787af6a837601a2bDaniel Dunbar llvm::Value *imp = CGF.Builder.CreateCall(lookupFunction, lookupArgs, 53620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov lookupArgs+2); 53720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 538f3c47c9525153aea2de0ec4bd615b9cf2d81c103Anders Carlsson return CGF.EmitCall(FnInfo, imp, ReturnValueSlot(), ActualArgs); 53920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 54020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 5411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// Generate code for a message send expression. 5428f2926b73ed635afecd020da787af6a837601a2bDaniel DunbarCodeGen::RValue 5438f2926b73ed635afecd020da787af6a837601a2bDaniel DunbarCGObjCGNU::GenerateMessageSend(CodeGen::CodeGenFunction &CGF, 5447f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar QualType ResultType, 5457f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar Selector Sel, 546f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar llvm::Value *Receiver, 54719cd87eb5fb3c197e631ce08fd52c446c4d4e8f1Daniel Dunbar bool IsClassMessage, 548df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian const CallArgList &CallArgs, 549df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian const ObjCMethodDecl *Method) { 550ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall if (CGM.getLangOptions().getGCMode() != LangOptions::NonGC) { 551ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall if (Sel == RetainSel || Sel == AutoreleaseSel) { 552ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall return RValue::get(Receiver); 553ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 554ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall if (Sel == ReleaseSel) { 555ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall return RValue::get(0); 556ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 557ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 558d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian CGBuilderTy &Builder = CGF.Builder; 5590f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall IdTy = cast<llvm::PointerType>(CGM.getTypes().ConvertType(ASTIdTy)); 560df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian llvm::Value *cmd; 561df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian if (Method) 562d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian cmd = GetSelector(Builder, Method); 563df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian else 564d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian cmd = GetSelector(Builder, Sel); 565b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CallArgList ActualArgs; 566b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 567d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Receiver = Builder.CreateBitCast(Receiver, IdTy); 568b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian ActualArgs.push_back( 569d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::make_pair(RValue::get(Receiver), ASTIdTy)); 570b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian ActualArgs.push_back(std::make_pair(RValue::get(cmd), 571b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CGF.getContext().getObjCSelType())); 572b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian ActualArgs.insert(ActualArgs.end(), CallArgs.begin(), CallArgs.end()); 573b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 574b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CodeGenTypes &Types = CGM.getTypes(); 57504a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall const CGFunctionInfo &FnInfo = Types.getFunctionInfo(ResultType, ActualArgs, 57604a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall CC_Default, false); 5776793966aa221764f579cc8436bd641e1ec339c6dDaniel Dunbar const llvm::FunctionType *impType = 5786793966aa221764f579cc8436bd641e1ec339c6dDaniel Dunbar Types.GetFunctionType(FnInfo, Method ? Method->isVariadic() : false); 5790f984268b05edab2cc555a427c441baa9c252658Chris Lattner 58034e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian llvm::Value *imp; 58134e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian // For sender-aware dispatch, we pass the sender as the third argument to a 58234e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian // lookup function. When sending messages from C code, the sender is nil. 583d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // objc_msg_lookup_sender(id *receiver, SEL selector, id sender); 584d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if (CGM.getContext().getLangOptions().ObjCNonFragileABI) { 585d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 586d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<const llvm::Type*> Params; 587d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Value *ReceiverPtr = CGF.CreateTempAlloca(Receiver->getType()); 588d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Builder.CreateStore(Receiver, ReceiverPtr); 589d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Params.push_back(ReceiverPtr->getType()); 590d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Params.push_back(SelectorTy); 59134e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian llvm::Value *self; 59234e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian 59334e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian if (isa<ObjCMethodDecl>(CGF.CurFuncDecl)) { 59434e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian self = CGF.LoadObjCSelf(); 59534e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian } else { 59603e205031b08669f05c41eed5b896fc94c4a12bbOwen Anderson self = llvm::ConstantPointerNull::get(IdTy); 59734e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian } 598d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 59934e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian Params.push_back(self->getType()); 600d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 601d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // The lookup function returns a slot, which can be safely cached. 602d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Type *SlotTy = llvm::StructType::get(VMContext, PtrTy, PtrTy, PtrTy, 603d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian IntTy, llvm::PointerType::getUnqual(impType), NULL); 6041eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Constant *lookupFunction = 60596e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson CGM.CreateRuntimeFunction(llvm::FunctionType::get( 606d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::PointerType::getUnqual(SlotTy), Params, true), 60734e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian "objc_msg_lookup_sender"); 60826c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian 609d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // The lookup function is guaranteed not to capture the receiver pointer. 610d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if (llvm::Function *LookupFn = dyn_cast<llvm::Function>(lookupFunction)) { 611d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian LookupFn->setDoesNotCapture(1); 612d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 613d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 614d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Value *slot = 615d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Builder.CreateCall3(lookupFunction, ReceiverPtr, cmd, self); 616d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian imp = Builder.CreateLoad(Builder.CreateStructGEP(slot, 4)); 617d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // The lookup function may have changed the receiver, so make sure we use 618d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // the new one. 619d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ActualArgs[0] = 620d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::make_pair(RValue::get(Builder.CreateLoad(ReceiverPtr)), ASTIdTy); 62134e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian } else { 622d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<const llvm::Type*> Params; 623d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Params.push_back(Receiver->getType()); 624d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Params.push_back(SelectorTy); 6251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Constant *lookupFunction = 62696e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson CGM.CreateRuntimeFunction(llvm::FunctionType::get( 62796e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(impType), Params, true), 62834e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian "objc_msg_lookup"); 62934e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian 630d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian imp = Builder.CreateCall2(lookupFunction, Receiver, cmd); 63134e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian } 6323eae03e7d165f20a863a9a4d7122ba2a691ab16dChris Lattner 633f3c47c9525153aea2de0ec4bd615b9cf2d81c103Anders Carlsson return CGF.EmitCall(FnInfo, imp, ReturnValueSlot(), ActualArgs); 63420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 63520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 6361eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// Generates a MethodList. Used in construction of a objc_class and 63720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// objc_category structures. 63820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::GenerateMethodList(const std::string &ClassName, 6391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const std::string &CategoryName, 6401eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const llvm::SmallVectorImpl<Selector> &MethodSels, 6411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const llvm::SmallVectorImpl<llvm::Constant *> &MethodTypes, 64220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov bool isClassMethodList) { 6430f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall if (MethodSels.empty()) 6440f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall return NULLPtr; 6451eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Get the method structure type. 64647a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType *ObjCMethodTy = llvm::StructType::get(VMContext, 64720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // Really a selector, but the runtime creates it us. 64820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // Method types 64996e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(IMPTy), //Method pointer 65020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 65120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Methods; 65220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 65320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (unsigned int i = 0, e = MethodTypes.size(); i < e; ++i) { 65420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 6551e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian if (llvm::Constant *Method = 65620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov TheModule.getFunction(SymbolNameForMethod(ClassName, CategoryName, 657077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner MethodSels[i].getAsString(), 6581e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian isClassMethodList))) { 6598a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::Constant *C = MakeConstantString(MethodSels[i].getAsString()); 6608a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall Elements.push_back(C); 6618a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall Elements.push_back(MethodTypes[i]); 6623c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Method = llvm::ConstantExpr::getBitCast(Method, 66396e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(IMPTy)); 6641e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian Elements.push_back(Method); 66508e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson Methods.push_back(llvm::ConstantStruct::get(ObjCMethodTy, Elements)); 6661e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian } 66720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 66820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 66920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Array of method structures 67096e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *ObjCMethodArrayTy = llvm::ArrayType::get(ObjCMethodTy, 6711e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian Methods.size()); 6727db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson llvm::Constant *MethodArray = llvm::ConstantArray::get(ObjCMethodArrayTy, 673fba676396703e87a5034e5f308aa30a633468f66Chris Lattner Methods); 67420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 67520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Structure containing list pointer, array and array count 67620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::SmallVector<const llvm::Type*, 16> ObjCMethodListFields; 6778c8f69ec1477424e11faef6b235505584d61e522Owen Anderson llvm::PATypeHolder OpaqueNextTy = llvm::OpaqueType::get(VMContext); 67896e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::Type *NextPtrTy = llvm::PointerType::getUnqual(OpaqueNextTy); 67947a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType *ObjCMethodListTy = llvm::StructType::get(VMContext, 6801eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump NextPtrTy, 6811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump IntTy, 68220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ObjCMethodArrayTy, 68320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 68420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Refine next pointer type to concrete type 68520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::cast<llvm::OpaqueType>( 68620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov OpaqueNextTy.get())->refineAbstractTypeTo(ObjCMethodListTy); 68720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ObjCMethodListTy = llvm::cast<llvm::StructType>(OpaqueNextTy.get()); 68820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 68920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.clear(); 69003e205031b08669f05c41eed5b896fc94c4a12bbOwen Anderson Methods.push_back(llvm::ConstantPointerNull::get( 69196e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(ObjCMethodListTy))); 6920032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson Methods.push_back(llvm::ConstantInt::get(llvm::Type::getInt32Ty(VMContext), 69320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov MethodTypes.size())); 69420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.push_back(MethodArray); 6951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 69620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an instance of the structure 69720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ObjCMethodListTy, Methods, ".objc_method_list"); 69820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 69920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 70020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// Generates an IvarList. Used in construction of a objc_class. 70120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::GenerateIvarList( 70220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarNames, 70320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarTypes, 70420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarOffsets) { 7051804463ee790ac3cc73f72597ccb38b983f7d263David Chisnall if (IvarNames.size() == 0) 7061804463ee790ac3cc73f72597ccb38b983f7d263David Chisnall return NULLPtr; 7071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Get the method structure type. 70847a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType *ObjCIvarTy = llvm::StructType::get(VMContext, 70920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 71020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 71120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IntTy, 71220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 71320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Ivars; 71420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 71520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (unsigned int i = 0, e = IvarNames.size() ; i < e ; i++) { 71620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 7178a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall Elements.push_back(IvarNames[i]); 7188a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall Elements.push_back(IvarTypes[i]); 71920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(IvarOffsets[i]); 72008e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson Ivars.push_back(llvm::ConstantStruct::get(ObjCIvarTy, Elements)); 72120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 72220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 72320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Array of method structures 72496e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *ObjCIvarArrayTy = llvm::ArrayType::get(ObjCIvarTy, 72520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IvarNames.size()); 72620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 7271eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 72820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 7294a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Elements.push_back(llvm::ConstantInt::get(IntTy, (int)IvarNames.size())); 7307db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson Elements.push_back(llvm::ConstantArray::get(ObjCIvarArrayTy, Ivars)); 73120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Structure containing array and array count 73247a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType *ObjCIvarListTy = llvm::StructType::get(VMContext, IntTy, 73320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ObjCIvarArrayTy, 73420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 73520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 73620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an instance of the structure 73720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ObjCIvarListTy, Elements, ".objc_ivar_list"); 7380f984268b05edab2cc555a427c441baa9c252658Chris Lattner} 7390f984268b05edab2cc555a427c441baa9c252658Chris Lattner 74020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// Generate a class structure 74120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::GenerateClassStructure( 74220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MetaClass, 74320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SuperClass, 74420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov unsigned info, 745d002cc6fc5b72bf00e3b7b4571ccf0f23c789b4bChris Lattner const char *Name, 74620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Version, 74720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *InstanceSize, 74820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *IVars, 74920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Methods, 750d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *Protocols, 751d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *IvarOffsets, 752d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *Properties) { 75320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Set up the class structure 75420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Note: Several of these are char*s when they should be ids. This is 75520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // because the runtime performs this translation on load. 756d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // 757d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Fields marked New ABI are part of the GNUstep runtime. We emit them 758d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // anyway; the classes will still work with the GNU runtime, they will just 759d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // be ignored. 76047a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType *ClassTy = llvm::StructType::get(VMContext, 76120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // class_pointer 76220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // super_class 76320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // name 76420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov LongTy, // version 76520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov LongTy, // info 76620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov LongTy, // instance_size 76720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IVars->getType(), // ivars 76820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods->getType(), // methods 7691eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // These are all filled in by the runtime, so we pretend 77020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // dtable 77120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // subclass_list 77220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // sibling_class 77320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // protocols 77420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // gc_object_type 775d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // New ABI: 776d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian LongTy, // abi_version 777d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian IvarOffsets->getType(), // ivar_offsets 778d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Properties->getType(), // properties 77920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 7804a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson llvm::Constant *Zero = llvm::ConstantInt::get(LongTy, 0); 78120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Fill in the structure 78220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 7833c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getBitCast(MetaClass, PtrToInt8Ty)); 78420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(SuperClass); 785d002cc6fc5b72bf00e3b7b4571ccf0f23c789b4bChris Lattner Elements.push_back(MakeConstantString(Name, ".class_name")); 78620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(Zero); 7874a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Elements.push_back(llvm::ConstantInt::get(LongTy, info)); 78820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(InstanceSize); 78920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(IVars); 79020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(Methods); 791d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(NULLPtr); 792d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(NULLPtr); 793d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(NULLPtr); 7943c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getBitCast(Protocols, PtrTy)); 795d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(NULLPtr); 796d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(Zero); 797d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(IvarOffsets); 798d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(Properties); 79920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an instance of the structure 80041d63ed274d1bf7ba7459f218c8f6a385fc5c6d6David Chisnall // This is now an externally visible symbol, so that we can speed up class 80141d63ed274d1bf7ba7459f218c8f6a385fc5c6d6David Chisnall // messages in the next ABI. 80241d63ed274d1bf7ba7459f218c8f6a385fc5c6d6David Chisnall return MakeGlobal(ClassTy, Elements, SymbolNameForClass(Name), 80341d63ed274d1bf7ba7459f218c8f6a385fc5c6d6David Chisnall llvm::GlobalValue::ExternalLinkage); 80420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 80520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 80620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::GenerateProtocolMethodList( 80720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &MethodNames, 80820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &MethodTypes) { 8091eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Get the method structure type. 81047a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType *ObjCMethodDescTy = llvm::StructType::get(VMContext, 81120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // Really a selector, but the runtime does the casting for us. 81220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 81320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 81420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Methods; 81520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 81620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (unsigned int i = 0, e = MethodTypes.size() ; i < e ; i++) { 81720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 8181eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Elements.push_back(MethodNames[i]); 8198a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall Elements.push_back(MethodTypes[i]); 82008e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson Methods.push_back(llvm::ConstantStruct::get(ObjCMethodDescTy, Elements)); 82120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 82296e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *ObjCMethodArrayTy = llvm::ArrayType::get(ObjCMethodDescTy, 82320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov MethodNames.size()); 8247db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson llvm::Constant *Array = llvm::ConstantArray::get(ObjCMethodArrayTy, 825bb1c8600218b3244340331165fc7cba7bf227655Mike Stump Methods); 82647a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType *ObjCMethodDescListTy = llvm::StructType::get(VMContext, 82720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IntTy, ObjCMethodArrayTy, NULL); 82820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.clear(); 8294a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Methods.push_back(llvm::ConstantInt::get(IntTy, MethodNames.size())); 83020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.push_back(Array); 83120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ObjCMethodDescListTy, Methods, ".objc_method_list"); 83220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 833bb1c8600218b3244340331165fc7cba7bf227655Mike Stump 83420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// Create the protocol list structure used in classes, categories and so on 83520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::GenerateProtocolList( 83620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<std::string> &Protocols) { 83796e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *ProtocolArrayTy = llvm::ArrayType::get(PtrToInt8Ty, 83820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Protocols.size()); 83947a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType *ProtocolListTy = llvm::StructType::get(VMContext, 84020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, //Should be a recurisve pointer, but it's always NULL here. 84120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov LongTy,//FIXME: Should be size_t 84220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ProtocolArrayTy, 84320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 8441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump std::vector<llvm::Constant*> Elements; 84520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (const std::string *iter = Protocols.begin(), *endIter = Protocols.end(); 84620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter != endIter ; iter++) { 847ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall llvm::Constant *protocol = 0; 848ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall llvm::StringMap<llvm::Constant*>::iterator value = 849ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall ExistingProtocols.find(*iter); 850ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall if (value == ExistingProtocols.end()) { 851f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian protocol = GenerateEmptyProtocol(*iter); 852ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall } else { 853ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall protocol = value->getValue(); 854ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall } 8553c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::Constant *Ptr = llvm::ConstantExpr::getBitCast(protocol, 856a1cf15f4680e5cf39e72e28c5ea854fcba792e84Owen Anderson PtrToInt8Ty); 85720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(Ptr); 85820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 8597db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson llvm::Constant * ProtocolArray = llvm::ConstantArray::get(ProtocolArrayTy, 86020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements); 86120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 86220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 8634a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Elements.push_back(llvm::ConstantInt::get(LongTy, Protocols.size())); 86420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ProtocolArray); 86520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ProtocolListTy, Elements, ".objc_protocol_list"); 86620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 86720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 8681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumpllvm::Value *CGObjCGNU::GenerateProtocolRef(CGBuilderTy &Builder, 869af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar const ObjCProtocolDecl *PD) { 870f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::Value *protocol = ExistingProtocols[PD->getNameAsString()]; 8711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const llvm::Type *T = 872f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian CGM.getTypes().ConvertType(CGM.getContext().getObjCProtoType()); 87396e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson return Builder.CreateBitCast(protocol, llvm::PointerType::getUnqual(T)); 874f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian} 875f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian 876f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanianllvm::Constant *CGObjCGNU::GenerateEmptyProtocol( 877f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian const std::string &ProtocolName) { 878f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::SmallVector<std::string, 0> EmptyStringVector; 879f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::SmallVector<llvm::Constant*, 0> EmptyConstantVector; 880f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian 881f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::Constant *ProtocolList = GenerateProtocolList(EmptyStringVector); 882d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *MethodList = 883f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian GenerateProtocolMethodList(EmptyConstantVector, EmptyConstantVector); 884f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian // Protocols are objects containing lists of the methods implemented and 885f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian // protocols adopted. 88647a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType *ProtocolTy = llvm::StructType::get(VMContext, IdTy, 887f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian PtrToInt8Ty, 888f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian ProtocolList->getType(), 889d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MethodList->getType(), 890d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MethodList->getType(), 891d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MethodList->getType(), 892d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MethodList->getType(), 893f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian NULL); 8941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump std::vector<llvm::Constant*> Elements; 895f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian // The isa pointer must be set to a magic number so the runtime knows it's 896f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian // the correct layout. 897d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian int Version = CGM.getContext().getLangOptions().ObjCNonFragileABI ? 898d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian NonFragileProtocolVersion : ProtocolVersion; 8993c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getIntToPtr( 900d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ConstantInt::get(llvm::Type::getInt32Ty(VMContext), Version), IdTy)); 901f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian Elements.push_back(MakeConstantString(ProtocolName, ".objc_protocol_name")); 902f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian Elements.push_back(ProtocolList); 903d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(MethodList); 904d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(MethodList); 905d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(MethodList); 906d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(MethodList); 907f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian return MakeGlobal(ProtocolTy, Elements, ".objc_protocol"); 90820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 90920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 910af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbarvoid CGObjCGNU::GenerateProtocol(const ObjCProtocolDecl *PD) { 911af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar ASTContext &Context = CGM.getContext(); 9128ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string ProtocolName = PD->getNameAsString(); 913af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar llvm::SmallVector<std::string, 16> Protocols; 914af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar for (ObjCProtocolDecl::protocol_iterator PI = PD->protocol_begin(), 915af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar E = PD->protocol_end(); PI != E; ++PI) 916d9d22dd9c94618490dbffb0e2caf222530ca39d3Chris Lattner Protocols.push_back((*PI)->getNameAsString()); 917af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> InstanceMethodNames; 918af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> InstanceMethodTypes; 919d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::SmallVector<llvm::Constant*, 16> OptionalInstanceMethodNames; 920d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::SmallVector<llvm::Constant*, 16> OptionalInstanceMethodTypes; 92117945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis for (ObjCProtocolDecl::instmeth_iterator iter = PD->instmeth_begin(), 92217945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis E = PD->instmeth_end(); iter != E; iter++) { 923af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar std::string TypeStr; 924af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar Context.getObjCEncodingForMethodDecl(*iter, TypeStr); 925d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if ((*iter)->getImplementationControl() == ObjCMethodDecl::Optional) { 926d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian InstanceMethodNames.push_back( 927d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MakeConstantString((*iter)->getSelector().getAsString())); 928d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian InstanceMethodTypes.push_back(MakeConstantString(TypeStr)); 929d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 930d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalInstanceMethodNames.push_back( 931d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MakeConstantString((*iter)->getSelector().getAsString())); 932d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalInstanceMethodTypes.push_back(MakeConstantString(TypeStr)); 933d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 934af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar } 935af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar // Collect information about class methods: 936af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> ClassMethodNames; 937af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> ClassMethodTypes; 938d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::SmallVector<llvm::Constant*, 16> OptionalClassMethodNames; 939d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::SmallVector<llvm::Constant*, 16> OptionalClassMethodTypes; 9401eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump for (ObjCProtocolDecl::classmeth_iterator 94117945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = PD->classmeth_begin(), endIter = PD->classmeth_end(); 94217945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter != endIter ; iter++) { 943af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar std::string TypeStr; 944af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar Context.getObjCEncodingForMethodDecl((*iter),TypeStr); 945d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if ((*iter)->getImplementationControl() == ObjCMethodDecl::Optional) { 946d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ClassMethodNames.push_back( 947d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MakeConstantString((*iter)->getSelector().getAsString())); 948d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ClassMethodTypes.push_back(MakeConstantString(TypeStr)); 949d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 950d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalClassMethodNames.push_back( 951d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MakeConstantString((*iter)->getSelector().getAsString())); 952d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalClassMethodTypes.push_back(MakeConstantString(TypeStr)); 953d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 954af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar } 95520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 95620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ProtocolList = GenerateProtocolList(Protocols); 95720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *InstanceMethodList = 95820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov GenerateProtocolMethodList(InstanceMethodNames, InstanceMethodTypes); 95920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ClassMethodList = 96020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov GenerateProtocolMethodList(ClassMethodNames, ClassMethodTypes); 961d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *OptionalInstanceMethodList = 962d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian GenerateProtocolMethodList(OptionalInstanceMethodNames, 963d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalInstanceMethodTypes); 964d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *OptionalClassMethodList = 965d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian GenerateProtocolMethodList(OptionalClassMethodNames, 966d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalClassMethodTypes); 967d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 968d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Property metadata: name, attributes, isSynthesized, setter name, setter 969d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // types, getter name, getter types. 970d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // The isSynthesized value is always set to 0 in a protocol. It exists to 971d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // simplify the runtime library by allowing it to use the same data 972d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // structures for protocol metadata everywhere. 973d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::StructType *PropertyMetadataTy = llvm::StructType::get(VMContext, 974d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrToInt8Ty, Int8Ty, Int8Ty, PtrToInt8Ty, PtrToInt8Ty, PtrToInt8Ty, 975d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrToInt8Ty, NULL); 976d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> Properties; 977d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> OptionalProperties; 978d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 979d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Add all of the property methods need adding to the method list and to the 980d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // property metadata list. 981d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian for (ObjCContainerDecl::prop_iterator 982d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian iter = PD->prop_begin(), endIter = PD->prop_end(); 983d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian iter != endIter ; iter++) { 984d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> Fields; 985d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ObjCPropertyDecl *property = (*iter); 986d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 987d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(MakeConstantString(property->getNameAsString())); 988d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(llvm::ConstantInt::get(Int8Ty, 989d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian property->getPropertyAttributes())); 990d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(llvm::ConstantInt::get(Int8Ty, 0)); 991d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if (ObjCMethodDecl *getter = property->getGetterMethodDecl()) { 992d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::string TypeStr; 993d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Context.getObjCEncodingForMethodDecl(getter,TypeStr); 994d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *TypeEncoding = MakeConstantString(TypeStr); 995d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian InstanceMethodTypes.push_back(TypeEncoding); 996d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(MakeConstantString(getter->getSelector().getAsString())); 997d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(TypeEncoding); 998d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 999d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1000d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1001d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1002d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if (ObjCMethodDecl *setter = property->getSetterMethodDecl()) { 1003d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::string TypeStr; 1004d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Context.getObjCEncodingForMethodDecl(setter,TypeStr); 1005d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *TypeEncoding = MakeConstantString(TypeStr); 1006d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian InstanceMethodTypes.push_back(TypeEncoding); 1007d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(MakeConstantString(setter->getSelector().getAsString())); 1008d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(TypeEncoding); 1009d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 1010d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1011d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1012d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1013d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if (property->getPropertyImplementation() == ObjCPropertyDecl::Optional) { 1014d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalProperties.push_back(llvm::ConstantStruct::get(PropertyMetadataTy, Fields)); 1015d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 1016d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Properties.push_back(llvm::ConstantStruct::get(PropertyMetadataTy, Fields)); 1017d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1018d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1019d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *PropertyArray = llvm::ConstantArray::get( 1020d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ArrayType::get(PropertyMetadataTy, Properties.size()), Properties); 1021d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant* PropertyListInitFields[] = 1022d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian {llvm::ConstantInt::get(IntTy, Properties.size()), NULLPtr, PropertyArray}; 1023d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1024d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *PropertyListInit = 10250d36dd28bb40b08a93d7f64196794882eee08ee8Nick Lewycky llvm::ConstantStruct::get(VMContext, PropertyListInitFields, 3, false); 1026d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *PropertyList = new llvm::GlobalVariable(TheModule, 1027d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PropertyListInit->getType(), false, llvm::GlobalValue::InternalLinkage, 1028d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PropertyListInit, ".objc_property_list"); 1029d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1030d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *OptionalPropertyArray = 1031d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ConstantArray::get(llvm::ArrayType::get(PropertyMetadataTy, 1032d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalProperties.size()) , OptionalProperties); 1033d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant* OptionalPropertyListInitFields[] = { 1034d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ConstantInt::get(IntTy, OptionalProperties.size()), NULLPtr, 1035d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalPropertyArray }; 1036d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1037d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *OptionalPropertyListInit = 10380d36dd28bb40b08a93d7f64196794882eee08ee8Nick Lewycky llvm::ConstantStruct::get(VMContext, OptionalPropertyListInitFields, 3, false); 1039d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *OptionalPropertyList = new llvm::GlobalVariable(TheModule, 1040d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalPropertyListInit->getType(), false, 1041d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::GlobalValue::InternalLinkage, OptionalPropertyListInit, 1042d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ".objc_property_list"); 1043d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 104420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Protocols are objects containing lists of the methods implemented and 104520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // protocols adopted. 104647a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType *ProtocolTy = llvm::StructType::get(VMContext, IdTy, 104720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 104820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ProtocolList->getType(), 104920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov InstanceMethodList->getType(), 105020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ClassMethodList->getType(), 1051d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalInstanceMethodList->getType(), 1052d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalClassMethodList->getType(), 1053d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PropertyList->getType(), 1054d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalPropertyList->getType(), 105520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 10561eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump std::vector<llvm::Constant*> Elements; 105720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // The isa pointer must be set to a magic number so the runtime knows it's 105820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // the correct layout. 1059d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian int Version = CGM.getContext().getLangOptions().ObjCNonFragileABI ? 1060d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian NonFragileProtocolVersion : ProtocolVersion; 10613c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getIntToPtr( 1062d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ConstantInt::get(llvm::Type::getInt32Ty(VMContext), Version), IdTy)); 106320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(MakeConstantString(ProtocolName, ".objc_protocol_name")); 106420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ProtocolList); 106520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(InstanceMethodList); 106620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ClassMethodList); 1067d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(OptionalInstanceMethodList); 1068d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(OptionalClassMethodList); 1069d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(PropertyList); 1070d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(OptionalPropertyList); 10711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump ExistingProtocols[ProtocolName] = 10723c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::ConstantExpr::getBitCast(MakeGlobal(ProtocolTy, Elements, 107320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ".objc_protocol"), IdTy); 107420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 1075d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanianvoid CGObjCGNU::GenerateProtocolHolderCategory(void) { 1076d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Collect information about instance methods 1077d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::SmallVector<Selector, 1> MethodSels; 1078d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::SmallVector<llvm::Constant*, 1> MethodTypes; 1079d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1080d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> Elements; 1081d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian const std::string ClassName = "__ObjC_Protocol_Holder_Ugly_Hack"; 1082d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian const std::string CategoryName = "AnotherHack"; 1083d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(MakeConstantString(CategoryName)); 1084d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(MakeConstantString(ClassName)); 1085d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Instance method list 1086d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(llvm::ConstantExpr::getBitCast(GenerateMethodList( 1087d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ClassName, CategoryName, MethodSels, MethodTypes, false), PtrTy)); 1088d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Class method list 1089d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(llvm::ConstantExpr::getBitCast(GenerateMethodList( 1090d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ClassName, CategoryName, MethodSels, MethodTypes, true), PtrTy)); 1091d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Protocol list 1092d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ArrayType *ProtocolArrayTy = llvm::ArrayType::get(PtrTy, 1093d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ExistingProtocols.size()); 1094d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::StructType *ProtocolListTy = llvm::StructType::get(VMContext, 1095d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrTy, //Should be a recurisve pointer, but it's always NULL here. 1096d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian LongTy,//FIXME: Should be size_t 1097d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolArrayTy, 1098d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian NULL); 1099d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> ProtocolElements; 1100d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian for (llvm::StringMapIterator<llvm::Constant*> iter = 1101d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ExistingProtocols.begin(), endIter = ExistingProtocols.end(); 1102d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian iter != endIter ; iter++) { 1103d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *Ptr = llvm::ConstantExpr::getBitCast(iter->getValue(), 1104d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrTy); 1105d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements.push_back(Ptr); 1106d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1107d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant * ProtocolArray = llvm::ConstantArray::get(ProtocolArrayTy, 1108d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements); 1109d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements.clear(); 1110d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements.push_back(NULLPtr); 1111d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements.push_back(llvm::ConstantInt::get(LongTy, 1112d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ExistingProtocols.size())); 1113d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements.push_back(ProtocolArray); 1114d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(llvm::ConstantExpr::getBitCast(MakeGlobal(ProtocolListTy, 1115d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements, ".objc_protocol_list"), PtrTy)); 1116d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Categories.push_back(llvm::ConstantExpr::getBitCast( 1117d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MakeGlobal(llvm::StructType::get(VMContext, PtrToInt8Ty, PtrToInt8Ty, 1118d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrTy, PtrTy, PtrTy, NULL), Elements), PtrTy)); 1119d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian} 112020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 11217ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbarvoid CGObjCGNU::GenerateCategory(const ObjCCategoryImplDecl *OCD) { 11228ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string ClassName = OCD->getClassInterface()->getNameAsString(); 11238ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string CategoryName = OCD->getNameAsString(); 11247ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about instance methods 11257ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<Selector, 16> InstanceMethodSels; 11267ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> InstanceMethodTypes; 1127653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor for (ObjCCategoryImplDecl::instmeth_iterator 112817945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = OCD->instmeth_begin(), endIter = OCD->instmeth_end(); 1129653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter != endIter ; iter++) { 11307ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar InstanceMethodSels.push_back((*iter)->getSelector()); 11317ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 11327ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar CGM.getContext().getObjCEncodingForMethodDecl(*iter,TypeStr); 11338a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall InstanceMethodTypes.push_back(MakeConstantString(TypeStr)); 11347ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 11357ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 11367ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about class methods 11377ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<Selector, 16> ClassMethodSels; 11387ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> ClassMethodTypes; 11391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump for (ObjCCategoryImplDecl::classmeth_iterator 114017945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = OCD->classmeth_begin(), endIter = OCD->classmeth_end(); 1141653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter != endIter ; iter++) { 11427ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar ClassMethodSels.push_back((*iter)->getSelector()); 11437ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 11447ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar CGM.getContext().getObjCEncodingForMethodDecl(*iter,TypeStr); 11458a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall ClassMethodTypes.push_back(MakeConstantString(TypeStr)); 11467ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 11477ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 11487ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect the names of referenced protocols 11497ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<std::string, 16> Protocols; 11507ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar const ObjCInterfaceDecl *ClassDecl = OCD->getClassInterface(); 11517ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar const ObjCList<ObjCProtocolDecl> &Protos =ClassDecl->getReferencedProtocols(); 11527ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar for (ObjCList<ObjCProtocolDecl>::iterator I = Protos.begin(), 11537ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar E = Protos.end(); I != E; ++I) 1154d9d22dd9c94618490dbffb0e2caf222530ca39d3Chris Lattner Protocols.push_back((*I)->getNameAsString()); 11557ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 115620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 115720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(MakeConstantString(CategoryName)); 115820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(MakeConstantString(ClassName)); 11591eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Instance method list 11603c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getBitCast(GenerateMethodList( 1161a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner ClassName, CategoryName, InstanceMethodSels, InstanceMethodTypes, 116220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov false), PtrTy)); 116320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Class method list 11643c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getBitCast(GenerateMethodList( 1165a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner ClassName, CategoryName, ClassMethodSels, ClassMethodTypes, true), 116620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy)); 116720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Protocol list 11683c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getBitCast( 116920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov GenerateProtocolList(Protocols), PtrTy)); 11703c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Categories.push_back(llvm::ConstantExpr::getBitCast( 11711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump MakeGlobal(llvm::StructType::get(VMContext, PtrToInt8Ty, PtrToInt8Ty, 117247a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson PtrTy, PtrTy, PtrTy, NULL), Elements), PtrTy)); 117320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 11747ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 1175d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanianllvm::Constant *CGObjCGNU::GeneratePropertyList(const ObjCImplementationDecl *OID, 1176d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::SmallVectorImpl<Selector> &InstanceMethodSels, 1177d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::SmallVectorImpl<llvm::Constant*> &InstanceMethodTypes) { 1178d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ASTContext &Context = CGM.getContext(); 1179d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // 1180d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Property metadata: name, attributes, isSynthesized, setter name, setter 1181d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // types, getter name, getter types. 1182d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::StructType *PropertyMetadataTy = llvm::StructType::get(VMContext, 1183d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrToInt8Ty, Int8Ty, Int8Ty, PtrToInt8Ty, PtrToInt8Ty, PtrToInt8Ty, 1184d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrToInt8Ty, NULL); 1185d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> Properties; 1186d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1187d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1188d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Add all of the property methods need adding to the method list and to the 1189d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // property metadata list. 1190d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian for (ObjCImplDecl::propimpl_iterator 1191d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian iter = OID->propimpl_begin(), endIter = OID->propimpl_end(); 1192d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian iter != endIter ; iter++) { 1193d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> Fields; 1194d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ObjCPropertyDecl *property = (*iter)->getPropertyDecl(); 119542ba04a072c69d84a6660e4498215086662910acDavid Chisnall ObjCPropertyImplDecl *propertyImpl = *iter; 119642ba04a072c69d84a6660e4498215086662910acDavid Chisnall bool isSynthesized = (propertyImpl->getPropertyImplementation() == 119742ba04a072c69d84a6660e4498215086662910acDavid Chisnall ObjCPropertyImplDecl::Synthesize); 1198d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1199d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(MakeConstantString(property->getNameAsString())); 1200d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(llvm::ConstantInt::get(Int8Ty, 1201d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian property->getPropertyAttributes())); 120242ba04a072c69d84a6660e4498215086662910acDavid Chisnall Fields.push_back(llvm::ConstantInt::get(Int8Ty, isSynthesized)); 1203d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if (ObjCMethodDecl *getter = property->getGetterMethodDecl()) { 1204d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::string TypeStr; 1205d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Context.getObjCEncodingForMethodDecl(getter,TypeStr); 1206d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *TypeEncoding = MakeConstantString(TypeStr); 120742ba04a072c69d84a6660e4498215086662910acDavid Chisnall if (isSynthesized) { 120842ba04a072c69d84a6660e4498215086662910acDavid Chisnall InstanceMethodTypes.push_back(TypeEncoding); 120942ba04a072c69d84a6660e4498215086662910acDavid Chisnall InstanceMethodSels.push_back(getter->getSelector()); 121042ba04a072c69d84a6660e4498215086662910acDavid Chisnall } 1211d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(MakeConstantString(getter->getSelector().getAsString())); 1212d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(TypeEncoding); 1213d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 1214d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1215d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1216d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1217d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if (ObjCMethodDecl *setter = property->getSetterMethodDecl()) { 1218d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::string TypeStr; 1219d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Context.getObjCEncodingForMethodDecl(setter,TypeStr); 1220d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *TypeEncoding = MakeConstantString(TypeStr); 122142ba04a072c69d84a6660e4498215086662910acDavid Chisnall if (isSynthesized) { 122242ba04a072c69d84a6660e4498215086662910acDavid Chisnall InstanceMethodTypes.push_back(TypeEncoding); 122342ba04a072c69d84a6660e4498215086662910acDavid Chisnall InstanceMethodSels.push_back(setter->getSelector()); 122442ba04a072c69d84a6660e4498215086662910acDavid Chisnall } 1225d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(MakeConstantString(setter->getSelector().getAsString())); 1226d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(TypeEncoding); 1227d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 1228d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1229d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1230d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1231d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Properties.push_back(llvm::ConstantStruct::get(PropertyMetadataTy, Fields)); 1232d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1233d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ArrayType *PropertyArrayTy = 1234d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ArrayType::get(PropertyMetadataTy, Properties.size()); 1235d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *PropertyArray = llvm::ConstantArray::get(PropertyArrayTy, 1236d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Properties); 1237d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant* PropertyListInitFields[] = 1238d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian {llvm::ConstantInt::get(IntTy, Properties.size()), NULLPtr, PropertyArray}; 1239d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1240d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *PropertyListInit = 12410d36dd28bb40b08a93d7f64196794882eee08ee8Nick Lewycky llvm::ConstantStruct::get(VMContext, PropertyListInitFields, 3, false); 1242d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian return new llvm::GlobalVariable(TheModule, PropertyListInit->getType(), false, 1243d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::GlobalValue::InternalLinkage, PropertyListInit, 1244d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ".objc_property_list"); 1245d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian} 1246d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 12477ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbarvoid CGObjCGNU::GenerateClass(const ObjCImplementationDecl *OID) { 12487ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar ASTContext &Context = CGM.getContext(); 12497ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 12507ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Get the superclass name. 12511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const ObjCInterfaceDecl * SuperClassDecl = 12527ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar OID->getClassInterface()->getSuperClass(); 12538ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string SuperClassName; 12542a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner if (SuperClassDecl) { 12558ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner SuperClassName = SuperClassDecl->getNameAsString(); 12562a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner EmitClassRef(SuperClassName); 12572a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner } 12587ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 12597ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Get the class name 126009dc6660487fc2f4a4bb2032e30123d3e0da7230Chris Lattner ObjCInterfaceDecl *ClassDecl = 126109dc6660487fc2f4a4bb2032e30123d3e0da7230Chris Lattner const_cast<ObjCInterfaceDecl *>(OID->getClassInterface()); 12628ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string ClassName = ClassDecl->getNameAsString(); 12632a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner // Emit the symbol that is used to generate linker errors if this class is 12642a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner // referenced in other modules but not declared. 1265c51db23f58bd887b16cf91554aa86c430a2496e7Fariborz Jahanian std::string classSymbolName = "__objc_class_name_" + ClassName; 12661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (llvm::GlobalVariable *symbol = 1267c51db23f58bd887b16cf91554aa86c430a2496e7Fariborz Jahanian TheModule.getGlobalVariable(classSymbolName)) { 12684a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson symbol->setInitializer(llvm::ConstantInt::get(LongTy, 0)); 1269c51db23f58bd887b16cf91554aa86c430a2496e7Fariborz Jahanian } else { 12701c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson new llvm::GlobalVariable(TheModule, LongTy, false, 12714a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson llvm::GlobalValue::ExternalLinkage, llvm::ConstantInt::get(LongTy, 0), 12721c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson classSymbolName); 1273c51db23f58bd887b16cf91554aa86c430a2496e7Fariborz Jahanian } 12741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 12752bebbf0acee55404de4b8846713b64429e744e8fDaniel Dunbar // Get the size of instances. 12762bebbf0acee55404de4b8846713b64429e744e8fDaniel Dunbar int instanceSize = Context.getASTObjCImplementationLayout(OID).getSize() / 8; 12777ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 12787ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about instance variables. 12797ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> IvarNames; 12807ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> IvarTypes; 12817ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> IvarOffsets; 12821eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1283d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> IvarOffsetValues; 1284d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 12851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump int superInstanceSize = !SuperClassDecl ? 0 : 12869cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian Context.getASTObjCInterfaceLayout(SuperClassDecl).getSize() / 8; 12879cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // For non-fragile ivars, set the instance size to 0 - {the size of just this 12889cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // class}. The runtime will then set this to the correct value on load. 12899cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian if (CGM.getContext().getLangOptions().ObjCNonFragileABI) { 12909cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian instanceSize = 0 - (instanceSize - superInstanceSize); 12919cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 12927ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar for (ObjCInterfaceDecl::ivar_iterator iter = ClassDecl->ivar_begin(), 12937ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar endIter = ClassDecl->ivar_end() ; iter != endIter ; iter++) { 12947ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Store the name 12958a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall IvarNames.push_back(MakeConstantString((*iter)->getNameAsString())); 12967ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Get the type encoding for this ivar 12977ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 12980d504c1da852e58ff802545c823ecff3b6c654b8Daniel Dunbar Context.getObjCEncodingForType((*iter)->getType(), TypeStr); 12998a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall IvarTypes.push_back(MakeConstantString(TypeStr)); 13007ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Get the offset 1301d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian uint64_t BaseOffset = ComputeIvarBaseOffset(CGM, ClassDecl, *iter); 1302aecbf24a6bad049437f8fec97e557d414003a3dbDavid Chisnall uint64_t Offset = BaseOffset; 13039cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian if (CGM.getContext().getLangOptions().ObjCNonFragileABI) { 1304d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Offset = BaseOffset - superInstanceSize; 13059cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 13067ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar IvarOffsets.push_back( 13070032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::ConstantInt::get(llvm::Type::getInt32Ty(VMContext), Offset)); 1308d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian IvarOffsetValues.push_back(new llvm::GlobalVariable(TheModule, IntTy, 1309d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian false, llvm::GlobalValue::ExternalLinkage, 1310d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ConstantInt::get(IntTy, BaseOffset), 1311d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian "__objc_ivar_offset_value_" + ClassName +"." + 1312d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian (*iter)->getNameAsString())); 13137ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 1314d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *IvarOffsetArrayInit = 1315d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ConstantArray::get(llvm::ArrayType::get(PtrToIntTy, 1316d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian IvarOffsetValues.size()), IvarOffsetValues); 1317d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::GlobalVariable *IvarOffsetArray = new llvm::GlobalVariable(TheModule, 1318d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian IvarOffsetArrayInit->getType(), false, 1319d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::GlobalValue::InternalLinkage, IvarOffsetArrayInit, 1320d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ".ivar.offsets"); 13217ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 13227ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about instance methods 13237ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<Selector, 16> InstanceMethodSels; 13247ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> InstanceMethodTypes; 13251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump for (ObjCImplementationDecl::instmeth_iterator 132617945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = OID->instmeth_begin(), endIter = OID->instmeth_end(); 1327653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter != endIter ; iter++) { 13287ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar InstanceMethodSels.push_back((*iter)->getSelector()); 13297ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 13307ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar Context.getObjCEncodingForMethodDecl((*iter),TypeStr); 13318a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall InstanceMethodTypes.push_back(MakeConstantString(TypeStr)); 13327ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 1333d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1334d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *Properties = GeneratePropertyList(OID, InstanceMethodSels, 1335d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian InstanceMethodTypes); 1336d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 13377ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 13387ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about class methods 13397ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<Selector, 16> ClassMethodSels; 13407ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> ClassMethodTypes; 1341653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor for (ObjCImplementationDecl::classmeth_iterator 134217945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = OID->classmeth_begin(), endIter = OID->classmeth_end(); 1343653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter != endIter ; iter++) { 13447ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar ClassMethodSels.push_back((*iter)->getSelector()); 13457ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 13467ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar Context.getObjCEncodingForMethodDecl((*iter),TypeStr); 13478a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall ClassMethodTypes.push_back(MakeConstantString(TypeStr)); 13487ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 13497ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect the names of referenced protocols 13507ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<std::string, 16> Protocols; 13517ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar const ObjCList<ObjCProtocolDecl> &Protos =ClassDecl->getReferencedProtocols(); 13527ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar for (ObjCList<ObjCProtocolDecl>::iterator I = Protos.begin(), 13537ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar E = Protos.end(); I != E; ++I) 1354d9d22dd9c94618490dbffb0e2caf222530ca39d3Chris Lattner Protocols.push_back((*I)->getNameAsString()); 13557ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 13567ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 13577ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 135820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Get the superclass pointer. 135920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SuperClass; 13608ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner if (!SuperClassName.empty()) { 136120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov SuperClass = MakeConstantString(SuperClassName, ".super_class_name"); 136220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } else { 136303e205031b08669f05c41eed5b896fc94c4a12bbOwen Anderson SuperClass = llvm::ConstantPointerNull::get(PtrToInt8Ty); 136420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 136520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Empty vector used to construct empty method lists 136620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::SmallVector<llvm::Constant*, 1> empty; 136720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Generate the method and instance variable lists 136820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MethodList = GenerateMethodList(ClassName, "", 1369a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner InstanceMethodSels, InstanceMethodTypes, false); 137020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ClassMethodList = GenerateMethodList(ClassName, "", 1371a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner ClassMethodSels, ClassMethodTypes, true); 137220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *IvarList = GenerateIvarList(IvarNames, IvarTypes, 137320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IvarOffsets); 13741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Irrespective of whether we are compiling for a fragile or non-fragile ABI, 13758a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // we emit a symbol containing the offset for each ivar in the class. This 13768a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // allows code compiled for the non-Fragile ABI to inherit from code compiled 13778a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // for the legacy ABI, without causing problems. The converse is also 13788a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // possible, but causes all ivar accesses to be fragile. 13798a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall int i = 0; 13808a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // Offset pointer for getting at the correct field in the ivar list when 13818a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // setting up the alias. These are: The base address for the global, the 13828a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // ivar array (second field), the ivar in this list (set for each ivar), and 13838a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // the offset (third field in ivar structure) 13848a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall const llvm::Type *IndexTy = llvm::Type::getInt32Ty(VMContext); 13858a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::Constant *offsetPointerIndexes[] = {Zeros[0], 13861eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::ConstantInt::get(IndexTy, 1), 0, 13878a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::ConstantInt::get(IndexTy, 2) }; 13888a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall 13898a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall for (ObjCInterfaceDecl::ivar_iterator iter = ClassDecl->ivar_begin(), 13908a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall endIter = ClassDecl->ivar_end() ; iter != endIter ; iter++) { 13918a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall const std::string Name = "__objc_ivar_offset_" + ClassName + '.' 13928a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall +(*iter)->getNameAsString(); 13938a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall offsetPointerIndexes[2] = llvm::ConstantInt::get(IndexTy, i++); 13948a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // Get the correct ivar field 13958a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::Constant *offsetValue = llvm::ConstantExpr::getGetElementPtr( 13968a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall IvarList, offsetPointerIndexes, 4); 13978a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // Get the existing alias, if one exists. 13988a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::GlobalVariable *offset = TheModule.getNamedGlobal(Name); 13998a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall if (offset) { 14008a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall offset->setInitializer(offsetValue); 14018a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // If this is the real definition, change its linkage type so that 14028a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // different modules will use this one, rather than their private 14038a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // copy. 14048a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall offset->setLinkage(llvm::GlobalValue::ExternalLinkage); 14058a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall } else { 14068a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // Add a new alias if there isn't one already. 14078a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall offset = new llvm::GlobalVariable(TheModule, offsetValue->getType(), 14088a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall false, llvm::GlobalValue::ExternalLinkage, offsetValue, Name); 14098a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall } 14108a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall } 141120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov //Generate metaclass for class methods 141220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MetaClassStruct = GenerateClassStructure(NULLPtr, 14131804463ee790ac3cc73f72597ccb38b983f7d263David Chisnall NULLPtr, 0x12L, ClassName.c_str(), 0, Zeros[0], GenerateIvarList( 1414d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian empty, empty, empty), ClassMethodList, NULLPtr, NULLPtr, NULLPtr); 14155efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar 141620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Generate the class structure 14178ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner llvm::Constant *ClassStruct = 1418d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian GenerateClassStructure(MetaClassStruct, SuperClass, 0x11L, 14198ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner ClassName.c_str(), 0, 14204a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson llvm::ConstantInt::get(LongTy, instanceSize), IvarList, 1421d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MethodList, GenerateProtocolList(Protocols), IvarOffsetArray, 1422d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Properties); 14235efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar 14245efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar // Resolve the class aliases, if they exist. 14255efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar if (ClassPtrAlias) { 14265efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar ClassPtrAlias->setAliasee( 14273c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::ConstantExpr::getBitCast(ClassStruct, IdTy)); 14285efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar ClassPtrAlias = 0; 14295efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } 14305efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar if (MetaClassPtrAlias) { 14315efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar MetaClassPtrAlias->setAliasee( 14323c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::ConstantExpr::getBitCast(MetaClassStruct, IdTy)); 14335efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar MetaClassPtrAlias = 0; 14345efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } 14355efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar 143620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Add class structure to list to be added to the symtab later 14373c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson ClassStruct = llvm::ConstantExpr::getBitCast(ClassStruct, PtrToInt8Ty); 143820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.push_back(ClassStruct); 143920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 144020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 1441c38e9affd4519ea199af22419c8c794973cc4b23Fariborz Jahanian 14421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumpllvm::Function *CGObjCGNU::ModuleInitFunction() { 144320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Only emit an ObjC load function if no Objective-C stuff has been called 144420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov if (Classes.empty() && Categories.empty() && ConstantStrings.empty() && 144520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ExistingProtocols.empty() && TypedSelectors.empty() && 14465f58b911304f7d114f929d1726a09cd1c828a5ddAnton Korobeynikov UntypedSelectors.empty()) 144720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return NULL; 14481b8956e1ce4c5770982d6e59edb16979b500677aEli Friedman 1449d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Add all referenced protocols to a category. 1450d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian GenerateProtocolHolderCategory(); 1451d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1452e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::StructType *SelStructTy = dyn_cast<llvm::StructType>( 1453e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner SelectorTy->getElementType()); 1454e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::Type *SelStructPtrTy = SelectorTy; 1455e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner bool isSelOpaque = false; 1456e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner if (SelStructTy == 0) { 145747a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson SelStructTy = llvm::StructType::get(VMContext, PtrToInt8Ty, 145847a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson PtrToInt8Ty, NULL); 145996e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson SelStructPtrTy = llvm::PointerType::getUnqual(SelStructTy); 1460e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner isSelOpaque = true; 1461e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner } 1462e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner 14631b8956e1ce4c5770982d6e59edb16979b500677aEli Friedman // Name the ObjC types to make the IR a bit easier to read 1464e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner TheModule.addTypeName(".objc_selector", SelStructPtrTy); 14651b8956e1ce4c5770982d6e59edb16979b500677aEli Friedman TheModule.addTypeName(".objc_id", IdTy); 14661b8956e1ce4c5770982d6e59edb16979b500677aEli Friedman TheModule.addTypeName(".objc_imp", IMPTy); 14671b8956e1ce4c5770982d6e59edb16979b500677aEli Friedman 146820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 146971238f67c5df13eef19450d66b7a7ab28377192aChris Lattner llvm::Constant *Statics = NULLPtr; 147020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Generate statics list: 147171238f67c5df13eef19450d66b7a7ab28377192aChris Lattner if (ConstantStrings.size()) { 147296e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *StaticsArrayTy = llvm::ArrayType::get(PtrToInt8Ty, 147371238f67c5df13eef19450d66b7a7ab28377192aChris Lattner ConstantStrings.size() + 1); 147471238f67c5df13eef19450d66b7a7ab28377192aChris Lattner ConstantStrings.push_back(NULLPtr); 14758a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall 14761b0969590e712d7d52fc9c0d43d3ab85c36d07a6Daniel Dunbar llvm::StringRef StringClass = CGM.getLangOptions().ObjCConstantStringClass; 14771b0969590e712d7d52fc9c0d43d3ab85c36d07a6Daniel Dunbar if (StringClass.empty()) StringClass = "NXConstantString"; 14788a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall Elements.push_back(MakeConstantString(StringClass, 14798a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall ".objc_static_class_name")); 14807db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson Elements.push_back(llvm::ConstantArray::get(StaticsArrayTy, 148171238f67c5df13eef19450d66b7a7ab28377192aChris Lattner ConstantStrings)); 14821eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::StructType *StaticsListTy = 148347a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType::get(VMContext, PtrToInt8Ty, StaticsArrayTy, NULL); 1484a1cf15f4680e5cf39e72e28c5ea854fcba792e84Owen Anderson llvm::Type *StaticsListPtrTy = 148596e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(StaticsListTy); 148671238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Statics = MakeGlobal(StaticsListTy, Elements, ".objc_statics"); 14871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::ArrayType *StaticsListArrayTy = 148896e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType::get(StaticsListPtrTy, 2); 148971238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Elements.clear(); 149071238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Elements.push_back(Statics); 1491c9c88b4159791c48e486ca94e3743b5979e2b7a6Owen Anderson Elements.push_back(llvm::Constant::getNullValue(StaticsListPtrTy)); 149271238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Statics = MakeGlobal(StaticsListArrayTy, Elements, ".objc_statics_ptr"); 14933c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Statics = llvm::ConstantExpr::getBitCast(Statics, PtrTy); 149471238f67c5df13eef19450d66b7a7ab28377192aChris Lattner } 149520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Array of classes, categories, and constant objects 149696e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *ClassListTy = llvm::ArrayType::get(PtrToInt8Ty, 149720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.size() + Categories.size() + 2); 14981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::StructType *SymTabTy = llvm::StructType::get(VMContext, 149947a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson LongTy, SelStructPtrTy, 15000032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::Type::getInt16Ty(VMContext), 15010032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::Type::getInt16Ty(VMContext), 1502630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner ClassListTy, NULL); 150320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 150420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 150520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Pointer to an array of selectors used in this module. 150620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Selectors; 150720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (std::map<TypedSelector, llvm::GlobalAlias*>::iterator 150820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter = TypedSelectors.begin(), iterEnd = TypedSelectors.end(); 150920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter != iterEnd ; ++iter) { 1510d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(ExportUniqueString(iter->first.first, ".objc_sel_name")); 1511a7c5b0832cc78efa899463b8faa573a1473d53d2David Chisnall Elements.push_back(MakeConstantString(iter->first.second, 1512630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner ".objc_sel_types")); 151308e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson Selectors.push_back(llvm::ConstantStruct::get(SelStructTy, Elements)); 151420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 151520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 151620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (llvm::StringMap<llvm::GlobalAlias*>::iterator 151720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter = UntypedSelectors.begin(), iterEnd = UntypedSelectors.end(); 1518630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner iter != iterEnd; ++iter) { 151920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back( 1520d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ExportUniqueString(iter->getKeyData(), ".objc_sel_name")); 152120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 152208e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson Selectors.push_back(llvm::ConstantStruct::get(SelStructTy, Elements)); 152320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 152420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 152520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 152620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 152708e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson Selectors.push_back(llvm::ConstantStruct::get(SelStructTy, Elements)); 152820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 152920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Number of static selectors 15304a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Elements.push_back(llvm::ConstantInt::get(LongTy, Selectors.size() )); 153120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SelectorList = MakeGlobal( 153296e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType::get(SelStructTy, Selectors.size()), Selectors, 153320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ".objc_selector_list"); 15341eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Elements.push_back(llvm::ConstantExpr::getBitCast(SelectorList, 1535e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner SelStructPtrTy)); 153620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 153720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Now that all of the static selectors exist, create pointers to them. 153820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov int index = 0; 153920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (std::map<TypedSelector, llvm::GlobalAlias*>::iterator 154020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter=TypedSelectors.begin(), iterEnd =TypedSelectors.end(); 154120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter != iterEnd; ++iter) { 154220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Idxs[] = {Zeros[0], 15430032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::ConstantInt::get(llvm::Type::getInt32Ty(VMContext), index++), Zeros[0]}; 15446d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbar llvm::Constant *SelPtr = new llvm::GlobalVariable(TheModule, SelStructPtrTy, 15456d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbar true, llvm::GlobalValue::InternalLinkage, 15466d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbar llvm::ConstantExpr::getGetElementPtr(SelectorList, Idxs, 2), 15476d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbar ".objc_sel_ptr"); 1548e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner // If selectors are defined as an opaque type, cast the pointer to this 1549e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner // type. 1550e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner if (isSelOpaque) { 15516d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbar SelPtr = llvm::ConstantExpr::getBitCast(SelPtr, 15526d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbar llvm::PointerType::getUnqual(SelectorTy)); 1553e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner } 15546d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbar (*iter).second->setAliasee(SelPtr); 155520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 155620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (llvm::StringMap<llvm::GlobalAlias*>::iterator 155720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter=UntypedSelectors.begin(), iterEnd = UntypedSelectors.end(); 155820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter != iterEnd; iter++) { 155920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Idxs[] = {Zeros[0], 15600032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::ConstantInt::get(llvm::Type::getInt32Ty(VMContext), index++), Zeros[0]}; 15616d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbar llvm::Constant *SelPtr = new llvm::GlobalVariable 15626d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbar (TheModule, SelStructPtrTy, 15636d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbar true, llvm::GlobalValue::InternalLinkage, 15646d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbar llvm::ConstantExpr::getGetElementPtr(SelectorList, Idxs, 2), 15656d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbar ".objc_sel_ptr"); 1566e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner // If selectors are defined as an opaque type, cast the pointer to this 1567e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner // type. 1568e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner if (isSelOpaque) { 15696d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbar SelPtr = llvm::ConstantExpr::getBitCast(SelPtr, 15706d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbar llvm::PointerType::getUnqual(SelectorTy)); 1571e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner } 15726d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbar (*iter).second->setAliasee(SelPtr); 157320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 157420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Number of classes defined. 15751eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Elements.push_back(llvm::ConstantInt::get(llvm::Type::getInt16Ty(VMContext), 157620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.size())); 157720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Number of categories defined 15781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Elements.push_back(llvm::ConstantInt::get(llvm::Type::getInt16Ty(VMContext), 157920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Categories.size())); 158020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an array of classes, then categories, then static object instances 158120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.insert(Classes.end(), Categories.begin(), Categories.end()); 158220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // NULL-terminated list of static object instances (mainly constant strings) 158320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.push_back(Statics); 158420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.push_back(NULLPtr); 15857db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson llvm::Constant *ClassList = llvm::ConstantArray::get(ClassListTy, Classes); 158620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ClassList); 15871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Construct the symbol table 158820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SymTab= MakeGlobal(SymTabTy, Elements); 158920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 159020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // The symbol table is contained in a module which has some version-checking 159120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // constants 159247a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType * ModuleTy = llvm::StructType::get(VMContext, LongTy, LongTy, 159396e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson PtrToInt8Ty, llvm::PointerType::getUnqual(SymTabTy), NULL); 159420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 159520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Runtime version used for compatibility checking. 15969cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian if (CGM.getContext().getLangOptions().ObjCNonFragileABI) { 15971eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Elements.push_back(llvm::ConstantInt::get(LongTy, 1598d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian NonFragileRuntimeVersion)); 15999cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } else { 16004a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Elements.push_back(llvm::ConstantInt::get(LongTy, RuntimeVersion)); 16019cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 160291a0b51438e5259a79d68d7450c453827beed9e2Fariborz Jahanian // sizeof(ModuleTy) 160374a8bbf0654fbbf37be04b240b5bbe591f37f242Benjamin Kramer llvm::TargetData td(&TheModule); 16044a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Elements.push_back(llvm::ConstantInt::get(LongTy, 1605a1cf15f4680e5cf39e72e28c5ea854fcba792e84Owen Anderson td.getTypeSizeInBits(ModuleTy)/8)); 160620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov //FIXME: Should be the path to the file where this module was declared 160720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 160820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(SymTab); 160920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Value *Module = MakeGlobal(ModuleTy, Elements); 161020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 161120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create the load function calling the runtime entry point with the module 161220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // structure 161320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Function * LoadFunction = llvm::Function::Create( 16140032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::FunctionType::get(llvm::Type::getVoidTy(VMContext), false), 161520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::GlobalValue::InternalLinkage, ".objc_load_function", 161620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov &TheModule); 16170032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::BasicBlock *EntryBB = 16180032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::BasicBlock::Create(VMContext, "entry", LoadFunction); 1619a1cf15f4680e5cf39e72e28c5ea854fcba792e84Owen Anderson CGBuilderTy Builder(VMContext); 162020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Builder.SetInsertPoint(EntryBB); 162126c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian 162226c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian std::vector<const llvm::Type*> Params(1, 162396e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(ModuleTy)); 162496e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::Value *Register = CGM.CreateRuntimeFunction(llvm::FunctionType::get( 16250032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::Type::getVoidTy(VMContext), Params, true), "__objc_exec_class"); 162620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Builder.CreateCall(Register, Module); 162720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Builder.CreateRetVoid(); 16289cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian 162920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return LoadFunction; 163020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 16317ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 1632679a502d462ef819e6175b58e255ca3f3391e7cfFariborz Jahanianllvm::Function *CGObjCGNU::GenerateMethod(const ObjCMethodDecl *OMD, 16331eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const ObjCContainerDecl *CD) { 16341eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const ObjCCategoryImplDecl *OCD = 16353e0a540b6d846178857289ec0eb8470a278d11a3Steve Naroff dyn_cast<ObjCCategoryImplDecl>(OMD->getDeclContext()); 1636077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner std::string CategoryName = OCD ? OCD->getNameAsString() : ""; 1637077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner std::string ClassName = OMD->getClassInterface()->getNameAsString(); 1638077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner std::string MethodName = OMD->getSelector().getAsString(); 1639f8d49f64ef6ab7e632717a31631fc289aab69428Douglas Gregor bool isClassMethod = !OMD->isInstanceMethod(); 1640391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner 1641541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel Dunbar CodeGenTypes &Types = CGM.getTypes(); 16421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const llvm::FunctionType *MethodTy = 1643541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel Dunbar Types.GetFunctionType(Types.getFunctionInfo(OMD), OMD->isVariadic()); 164420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::string FunctionName = SymbolNameForMethod(ClassName, CategoryName, 164520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov MethodName, isClassMethod); 164620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 1647d6c93d703541c992e06eb9a59a2d826a30da65b2Daniel Dunbar llvm::Function *Method 16481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump = llvm::Function::Create(MethodTy, 16491eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::GlobalValue::InternalLinkage, 16501eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump FunctionName, 16511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump &TheModule); 1652391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner return Method; 1653391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner} 1654391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner 165549f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbarllvm::Function *CGObjCGNU::GetPropertyGetFunction() { 16561eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump std::vector<const llvm::Type*> Params; 16571eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const llvm::Type *BoolTy = 16581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump CGM.getTypes().ConvertType(CGM.getContext().BoolTy); 16591eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Params.push_back(IdTy); 16601eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Params.push_back(SelectorTy); 16611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // FIXME: Using LongTy for ptrdiff_t is probably broken on Win64 16621eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Params.push_back(LongTy); 16631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Params.push_back(BoolTy); 16641eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // void objc_getProperty (id, SEL, ptrdiff_t, bool) 16651eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const llvm::FunctionType *FTy = 16661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::FunctionType::get(IdTy, Params, false); 16671eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return cast<llvm::Function>(CGM.CreateRuntimeFunction(FTy, 16681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump "objc_getProperty")); 166949f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar} 167049f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar 167149f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbarllvm::Function *CGObjCGNU::GetPropertySetFunction() { 16721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump std::vector<const llvm::Type*> Params; 16731eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const llvm::Type *BoolTy = 16741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump CGM.getTypes().ConvertType(CGM.getContext().BoolTy); 16751eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Params.push_back(IdTy); 16761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Params.push_back(SelectorTy); 16771eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // FIXME: Using LongTy for ptrdiff_t is probably broken on Win64 16781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Params.push_back(LongTy); 16791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Params.push_back(IdTy); 16801eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Params.push_back(BoolTy); 16811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Params.push_back(BoolTy); 16821eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // void objc_setProperty (id, SEL, ptrdiff_t, id, bool, bool) 16831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const llvm::FunctionType *FTy = 16841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::FunctionType::get(llvm::Type::getVoidTy(VMContext), Params, false); 16851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return cast<llvm::Function>(CGM.CreateRuntimeFunction(FTy, 16861eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump "objc_setProperty")); 168749f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar} 168849f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar 1689309a4368cd299cff30ab22709e2b772cf8059e45Daniel Dunbarllvm::Constant *CGObjCGNU::EnumerationMutationFunction() { 1690309a4368cd299cff30ab22709e2b772cf8059e45Daniel Dunbar CodeGen::CodeGenTypes &Types = CGM.getTypes(); 1691309a4368cd299cff30ab22709e2b772cf8059e45Daniel Dunbar ASTContext &Ctx = CGM.getContext(); 1692309a4368cd299cff30ab22709e2b772cf8059e45Daniel Dunbar // void objc_enumerationMutation (id) 1693ead608af31b6c9abeae1ca6d0b75094dac4641c0John McCall llvm::SmallVector<CanQualType,1> Params; 16940f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall Params.push_back(ASTIdTy); 1695309a4368cd299cff30ab22709e2b772cf8059e45Daniel Dunbar const llvm::FunctionType *FTy = 169604a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall Types.GetFunctionType(Types.getFunctionInfo(Ctx.VoidTy, Params, 169704a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall CC_Default, false), false); 1698309a4368cd299cff30ab22709e2b772cf8059e45Daniel Dunbar return CGM.CreateRuntimeFunction(FTy, "objc_enumerationMutation"); 16992abd89c039e835e84519a4cd8a7495899a70153dAnders Carlsson} 17002abd89c039e835e84519a4cd8a7495899a70153dAnders Carlsson 1701bd71be4683c195260d5245118b1e13e6b2e20504Fariborz Jahanianvoid CGObjCGNU::EmitTryOrSynchronizedStmt(CodeGen::CodeGenFunction &CGF, 1702bd71be4683c195260d5245118b1e13e6b2e20504Fariborz Jahanian const Stmt &S) { 17035dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Pointer to the personality function 17045dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Constant *Personality = 17050032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson CGM.CreateRuntimeFunction(llvm::FunctionType::get(llvm::Type::getInt32Ty(VMContext), 1706b59761b2530bf54926bf67de11956f3820ac38d9Chris Lattner true), 17075dc0867af17b3bd6f567897433853b2b4767446cChris Lattner "__gnu_objc_personality_v0"); 17083c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Personality = llvm::ConstantExpr::getBitCast(Personality, PtrTy); 17095dc0867af17b3bd6f567897433853b2b4767446cChris Lattner std::vector<const llvm::Type*> Params; 17105dc0867af17b3bd6f567897433853b2b4767446cChris Lattner Params.push_back(PtrTy); 17115dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Value *RethrowFn = 17120032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson CGM.CreateRuntimeFunction(llvm::FunctionType::get(llvm::Type::getVoidTy(VMContext), 171390665bd87f4ef7c230742e038cd0bad68e40fc78David Chisnall Params, false), "_Unwind_Resume"); 17145dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 17155dc0867af17b3bd6f567897433853b2b4767446cChris Lattner bool isTry = isa<ObjCAtTryStmt>(S); 17165dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *TryBlock = CGF.createBasicBlock("try"); 17175dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *PrevLandingPad = CGF.getInvokeDest(); 17185dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *TryHandler = CGF.createBasicBlock("try.handler"); 1719d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner llvm::BasicBlock *CatchInCatch = CGF.createBasicBlock("catch.rethrow"); 17205dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *FinallyBlock = CGF.createBasicBlock("finally"); 17215dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *FinallyRethrow = CGF.createBasicBlock("finally.throw"); 17225dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *FinallyEnd = CGF.createBasicBlock("finally.end"); 17235dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 17240faa51632584b8d56311d5792a2a275729bc67e3David Chisnall // @synchronized() 17255dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (!isTry) { 1726d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner std::vector<const llvm::Type*> Args(1, IdTy); 1727d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner llvm::FunctionType *FTy = 17280032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::FunctionType::get(llvm::Type::getVoidTy(VMContext), Args, false); 1729d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner llvm::Value *SyncEnter = CGM.CreateRuntimeFunction(FTy, "objc_sync_enter"); 17301eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *SyncArg = 1731d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.EmitScalarExpr(cast<ObjCAtSynchronizedStmt>(S).getSynchExpr()); 1732d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner SyncArg = CGF.Builder.CreateBitCast(SyncArg, IdTy); 1733d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.Builder.CreateCall(SyncEnter, SyncArg); 17345dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 17355dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 1736d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner 17375dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Push an EH context entry, used for handling rethrows and jumps 17385dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // through finally. 17395dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.PushCleanupBlock(FinallyBlock); 17405dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 17415dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Emit the statements in the @try {} block 17425dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.setInvokeDest(TryHandler); 17435dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 17445dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(TryBlock); 17451eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump CGF.EmitStmt(isTry ? cast<ObjCAtTryStmt>(S).getTryBody() 17465dc0867af17b3bd6f567897433853b2b4767446cChris Lattner : cast<ObjCAtSynchronizedStmt>(S).getSynchBody()); 17475dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 17485dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Jump to @finally if there is no exception 17495dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBranchThroughCleanup(FinallyEnd); 17505dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 17515dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Emit the handlers 17525dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(TryHandler); 17535dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 1754bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner // Get the correct versions of the exception handling intrinsics 17551eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *llvm_eh_exception = 17565dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.CGM.getIntrinsic(llvm::Intrinsic::eh_exception); 1757790b20ed2cec72b4a79d1829ffc2c0339acbdec3Duncan Sands llvm::Value *llvm_eh_selector = 1758790b20ed2cec72b4a79d1829ffc2c0339acbdec3Duncan Sands CGF.CGM.getIntrinsic(llvm::Intrinsic::eh_selector); 1759790b20ed2cec72b4a79d1829ffc2c0339acbdec3Duncan Sands llvm::Value *llvm_eh_typeid_for = 1760790b20ed2cec72b4a79d1829ffc2c0339acbdec3Duncan Sands CGF.CGM.getIntrinsic(llvm::Intrinsic::eh_typeid_for); 17615dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 17625dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Exception object 17635dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Value *Exc = CGF.Builder.CreateCall(llvm_eh_exception, "exc"); 17645dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Value *RethrowPtr = CGF.CreateTempAlloca(Exc->getType(), "_rethrow"); 17655dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 17665dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::SmallVector<llvm::Value*, 8> ESelArgs; 17675dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::SmallVector<std::pair<const ParmVarDecl*, const Stmt*>, 8> Handlers; 17685dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 17695dc0867af17b3bd6f567897433853b2b4767446cChris Lattner ESelArgs.push_back(Exc); 17705dc0867af17b3bd6f567897433853b2b4767446cChris Lattner ESelArgs.push_back(Personality); 17715dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 17725dc0867af17b3bd6f567897433853b2b4767446cChris Lattner bool HasCatchAll = false; 17735dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Only @try blocks are allowed @catch blocks, but both can have @finally 17745dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (isTry) { 17755dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (const ObjCAtCatchStmt* CatchStmt = 17765dc0867af17b3bd6f567897433853b2b4767446cChris Lattner cast<ObjCAtTryStmt>(S).getCatchStmts()) { 1777d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.setInvokeDest(CatchInCatch); 17785dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 17795dc0867af17b3bd6f567897433853b2b4767446cChris Lattner for (; CatchStmt; CatchStmt = CatchStmt->getNextCatchStmt()) { 17805dc0867af17b3bd6f567897433853b2b4767446cChris Lattner const ParmVarDecl *CatchDecl = CatchStmt->getCatchParamDecl(); 1781bb1c8600218b3244340331165fc7cba7bf227655Mike Stump Handlers.push_back(std::make_pair(CatchDecl, 1782bb1c8600218b3244340331165fc7cba7bf227655Mike Stump CatchStmt->getCatchBody())); 17835dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 17845dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // @catch() and @catch(id) both catch any ObjC exception 178514108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff if (!CatchDecl || CatchDecl->getType()->isObjCIdType() 17865dc0867af17b3bd6f567897433853b2b4767446cChris Lattner || CatchDecl->getType()->isObjCQualifiedIdType()) { 17875dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Use i8* null here to signal this is a catch all, not a cleanup. 17885dc0867af17b3bd6f567897433853b2b4767446cChris Lattner ESelArgs.push_back(NULLPtr); 17895dc0867af17b3bd6f567897433853b2b4767446cChris Lattner HasCatchAll = true; 17905dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // No further catches after this one will ever by reached 17915dc0867af17b3bd6f567897433853b2b4767446cChris Lattner break; 17921eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 17935dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 17945dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // All other types should be Objective-C interface pointer types. 17951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const ObjCObjectPointerType *OPT = 1796183700f494ec9b6701b6efe82bcb25f4c79ba561John McCall CatchDecl->getType()->getAs<ObjCObjectPointerType>(); 179714108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff assert(OPT && "Invalid @catch type."); 17981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const ObjCInterfaceType *IT = 1799183700f494ec9b6701b6efe82bcb25f4c79ba561John McCall OPT->getPointeeType()->getAs<ObjCInterfaceType>(); 18005dc0867af17b3bd6f567897433853b2b4767446cChris Lattner assert(IT && "Invalid @catch type."); 1801bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner llvm::Value *EHType = 1802bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner MakeConstantString(IT->getDecl()->getNameAsString()); 18035dc0867af17b3bd6f567897433853b2b4767446cChris Lattner ESelArgs.push_back(EHType); 18045dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 18055dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 18065dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 18075dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 18085dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // We use a cleanup unless there was already a catch all. 18095dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (!HasCatchAll) { 18100032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson ESelArgs.push_back(llvm::ConstantInt::get(llvm::Type::getInt32Ty(VMContext), 0)); 18115dc0867af17b3bd6f567897433853b2b4767446cChris Lattner Handlers.push_back(std::make_pair((const ParmVarDecl*) 0, (const Stmt*) 0)); 18125dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 18135dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 18145dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Find which handler was matched. 1815bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner llvm::Value *ESelector = CGF.Builder.CreateCall(llvm_eh_selector, 18165dc0867af17b3bd6f567897433853b2b4767446cChris Lattner ESelArgs.begin(), ESelArgs.end(), "selector"); 18175dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 18185dc0867af17b3bd6f567897433853b2b4767446cChris Lattner for (unsigned i = 0, e = Handlers.size(); i != e; ++i) { 18195dc0867af17b3bd6f567897433853b2b4767446cChris Lattner const ParmVarDecl *CatchParam = Handlers[i].first; 18205dc0867af17b3bd6f567897433853b2b4767446cChris Lattner const Stmt *CatchBody = Handlers[i].second; 18215dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 18225dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *Next = 0; 18235dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 18245dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // The last handler always matches. 18255dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (i + 1 != e) { 18265dc0867af17b3bd6f567897433853b2b4767446cChris Lattner assert(CatchParam && "Only last handler can be a catch all."); 18275dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 18285dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Test whether this block matches the type for the selector and branch 18295dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // to Match if it does, or to the next BB if it doesn't. 18305dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *Match = CGF.createBasicBlock("match"); 18315dc0867af17b3bd6f567897433853b2b4767446cChris Lattner Next = CGF.createBasicBlock("catch.next"); 1832bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner llvm::Value *Id = CGF.Builder.CreateCall(llvm_eh_typeid_for, 18335dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateBitCast(ESelArgs[i+2], PtrTy)); 18345dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateCondBr(CGF.Builder.CreateICmpEQ(ESelector, Id), Match, 18355dc0867af17b3bd6f567897433853b2b4767446cChris Lattner Next); 18365dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 18375dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(Match); 18385dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 18391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18405dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (CatchBody) { 18415dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Value *ExcObject = CGF.Builder.CreateBitCast(Exc, 18425dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.ConvertType(CatchParam->getType())); 18431eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18445dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Bind the catch parameter if it exists. 18455dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (CatchParam) { 18465dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // CatchParam is a ParmVarDecl because of the grammar 18475dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // construction used to handle this, but for codegen purposes 18485dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // we treat this as a local decl. 18495dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitLocalBlockVarDecl(*CatchParam); 18505dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateStore(ExcObject, CGF.GetAddrOfLocalVar(CatchParam)); 18515dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 18525dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 18535dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.ObjCEHValueStack.push_back(ExcObject); 18545dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitStmt(CatchBody); 18555dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.ObjCEHValueStack.pop_back(); 18565dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 18575dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBranchThroughCleanup(FinallyEnd); 18585dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 18595dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (Next) 18605dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(Next); 18615dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } else { 18625dc0867af17b3bd6f567897433853b2b4767446cChris Lattner assert(!Next && "catchup should be last handler."); 18635dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 18645dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateStore(Exc, RethrowPtr); 18655dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBranchThroughCleanup(FinallyRethrow); 18665dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 18675dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 1868d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner // The @finally block is a secondary landing pad for any exceptions thrown in 1869d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner // @catch() blocks 1870d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.EmitBlock(CatchInCatch); 1871d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner Exc = CGF.Builder.CreateCall(llvm_eh_exception, "exc"); 1872d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner ESelArgs.clear(); 1873d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner ESelArgs.push_back(Exc); 1874d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner ESelArgs.push_back(Personality); 18750faa51632584b8d56311d5792a2a275729bc67e3David Chisnall // If there is a @catch or @finally clause in outside of this one then we 18760faa51632584b8d56311d5792a2a275729bc67e3David Chisnall // need to make sure that we catch and rethrow it. 18770faa51632584b8d56311d5792a2a275729bc67e3David Chisnall if (PrevLandingPad) { 18780faa51632584b8d56311d5792a2a275729bc67e3David Chisnall ESelArgs.push_back(NULLPtr); 18790faa51632584b8d56311d5792a2a275729bc67e3David Chisnall } else { 18800faa51632584b8d56311d5792a2a275729bc67e3David Chisnall ESelArgs.push_back(llvm::ConstantInt::get(llvm::Type::getInt32Ty(VMContext), 0)); 18810faa51632584b8d56311d5792a2a275729bc67e3David Chisnall } 1882d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.Builder.CreateCall(llvm_eh_selector, ESelArgs.begin(), ESelArgs.end(), 1883d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner "selector"); 1884d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.Builder.CreateCall(llvm_eh_typeid_for, 1885d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.Builder.CreateIntToPtr(ESelArgs[2], PtrTy)); 1886d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.Builder.CreateStore(Exc, RethrowPtr); 1887d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.EmitBranchThroughCleanup(FinallyRethrow); 1888d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner 18895dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CodeGenFunction::CleanupBlockInfo Info = CGF.PopCleanupBlock(); 18905dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 18915dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.setInvokeDest(PrevLandingPad); 18925dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 18935dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(FinallyBlock); 18945dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 1895d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner 18965dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (isTry) { 18971eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (const ObjCAtFinallyStmt* FinallyStmt = 18985dc0867af17b3bd6f567897433853b2b4767446cChris Lattner cast<ObjCAtTryStmt>(S).getFinallyStmt()) 18995dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitStmt(FinallyStmt->getFinallyBody()); 19005dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } else { 1901d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner // Emit 'objc_sync_exit(expr)' as finally's sole statement for 19025dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // @synchronized. 1903d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner std::vector<const llvm::Type*> Args(1, IdTy); 1904d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner llvm::FunctionType *FTy = 19050032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::FunctionType::get(llvm::Type::getVoidTy(VMContext), Args, false); 1906d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner llvm::Value *SyncExit = CGM.CreateRuntimeFunction(FTy, "objc_sync_exit"); 19071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *SyncArg = 1908d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.EmitScalarExpr(cast<ObjCAtSynchronizedStmt>(S).getSynchExpr()); 1909d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner SyncArg = CGF.Builder.CreateBitCast(SyncArg, IdTy); 1910d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.Builder.CreateCall(SyncExit, SyncArg); 19115dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 19125dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 19135dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (Info.SwitchBlock) 19145dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(Info.SwitchBlock); 19155dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (Info.EndBlock) 19165dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(Info.EndBlock); 19175dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 19185dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Branch around the rethrow code. 19195dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBranch(FinallyEnd); 19205dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 19215dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(FinallyRethrow); 19221eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19230faa51632584b8d56311d5792a2a275729bc67e3David Chisnall llvm::Value *ExceptionObject = CGF.Builder.CreateLoad(RethrowPtr); 19240faa51632584b8d56311d5792a2a275729bc67e3David Chisnall llvm::BasicBlock *UnwindBB = CGF.getInvokeDest(); 19250faa51632584b8d56311d5792a2a275729bc67e3David Chisnall if (!UnwindBB) { 19260faa51632584b8d56311d5792a2a275729bc67e3David Chisnall CGF.Builder.CreateCall(RethrowFn, ExceptionObject); 19270faa51632584b8d56311d5792a2a275729bc67e3David Chisnall // Exception always thrown, next instruction is never reached. 19280faa51632584b8d56311d5792a2a275729bc67e3David Chisnall CGF.Builder.CreateUnreachable(); 19290faa51632584b8d56311d5792a2a275729bc67e3David Chisnall } else { 19300faa51632584b8d56311d5792a2a275729bc67e3David Chisnall // If there is a @catch block outside this scope, we invoke instead of 19310faa51632584b8d56311d5792a2a275729bc67e3David Chisnall // calling because we may return to this function. This is very slow, but 19320faa51632584b8d56311d5792a2a275729bc67e3David Chisnall // some people still do it. It would be nice to add an optimised path for 19330faa51632584b8d56311d5792a2a275729bc67e3David Chisnall // this. 19340faa51632584b8d56311d5792a2a275729bc67e3David Chisnall CGF.Builder.CreateInvoke(RethrowFn, UnwindBB, UnwindBB, &ExceptionObject, 19350faa51632584b8d56311d5792a2a275729bc67e3David Chisnall &ExceptionObject+1); 19360faa51632584b8d56311d5792a2a275729bc67e3David Chisnall } 19375dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 19380faa51632584b8d56311d5792a2a275729bc67e3David Chisnall CGF.EmitBlock(FinallyEnd); 193964d5d6c5903157c521af496479d06dc26032d718Anders Carlsson} 194064d5d6c5903157c521af496479d06dc26032d718Anders Carlsson 194164d5d6c5903157c521af496479d06dc26032d718Anders Carlssonvoid CGObjCGNU::EmitThrowStmt(CodeGen::CodeGenFunction &CGF, 194249f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar const ObjCAtThrowStmt &S) { 19435dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Value *ExceptionAsObject; 19445dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 19455dc0867af17b3bd6f567897433853b2b4767446cChris Lattner std::vector<const llvm::Type*> Args(1, IdTy); 19465dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::FunctionType *FTy = 19470032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::FunctionType::get(llvm::Type::getVoidTy(VMContext), Args, false); 19481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *ThrowFn = 19495dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGM.CreateRuntimeFunction(FTy, "objc_exception_throw"); 19501eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19515dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (const Expr *ThrowExpr = S.getThrowExpr()) { 19525dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Value *Exception = CGF.EmitScalarExpr(ThrowExpr); 19531e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian ExceptionAsObject = Exception; 19545dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } else { 19551eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump assert((!CGF.ObjCEHValueStack.empty() && CGF.ObjCEHValueStack.back()) && 19565dc0867af17b3bd6f567897433853b2b4767446cChris Lattner "Unexpected rethrow outside @catch block."); 19575dc0867af17b3bd6f567897433853b2b4767446cChris Lattner ExceptionAsObject = CGF.ObjCEHValueStack.back(); 19585dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 19591e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian ExceptionAsObject = 19601e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian CGF.Builder.CreateBitCast(ExceptionAsObject, IdTy, "tmp"); 19611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19625dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Note: This may have to be an invoke, if we want to support constructs like: 19635dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // @try { 19645dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // @throw(obj); 19655dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // } 19665dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // @catch(id) ... 19675dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // 19685dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // This is effectively turning @throw into an incredibly-expensive goto, but 19695dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // it may happen as a result of inlining followed by missed optimizations, or 19705dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // as a result of stupidity. 19715dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *UnwindBB = CGF.getInvokeDest(); 19725dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (!UnwindBB) { 19735dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateCall(ThrowFn, ExceptionAsObject); 19745dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateUnreachable(); 19755dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } else { 19765dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateInvoke(ThrowFn, UnwindBB, UnwindBB, &ExceptionAsObject, 19775dc0867af17b3bd6f567897433853b2b4767446cChris Lattner &ExceptionAsObject+1); 19785dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 19795dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Clear the insertion point to indicate we are in unreachable code. 19805dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.ClearInsertionPoint(); 198164d5d6c5903157c521af496479d06dc26032d718Anders Carlsson} 198264d5d6c5903157c521af496479d06dc26032d718Anders Carlsson 19833e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanianllvm::Value * CGObjCGNU::EmitObjCWeakRead(CodeGen::CodeGenFunction &CGF, 19841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *AddrWeakObj) { 1985ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall CGBuilderTy B = CGF.Builder; 1986ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall AddrWeakObj = EnforceType(B, AddrWeakObj, IdTy); 1987ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall return B.CreateCall(WeakReadFn, AddrWeakObj); 19886dc2317b59cb1180a59f6c283d96b7a5dfeb5307Fariborz Jahanian} 19896dc2317b59cb1180a59f6c283d96b7a5dfeb5307Fariborz Jahanian 19903e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanianvoid CGObjCGNU::EmitObjCWeakAssign(CodeGen::CodeGenFunction &CGF, 19911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *src, llvm::Value *dst) { 1992ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall CGBuilderTy B = CGF.Builder; 1993ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall src = EnforceType(B, src, IdTy); 1994ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall dst = EnforceType(B, dst, PtrToIdTy); 1995ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall B.CreateCall2(WeakAssignFn, src, dst); 19963e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian} 19973e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian 199858626500527695865683d1d65053743de8770b60Fariborz Jahanianvoid CGObjCGNU::EmitObjCGlobalAssign(CodeGen::CodeGenFunction &CGF, 19991eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *src, llvm::Value *dst) { 2000ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall CGBuilderTy B = CGF.Builder; 2001ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall src = EnforceType(B, src, IdTy); 2002ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall dst = EnforceType(B, dst, PtrToIdTy); 2003ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall B.CreateCall2(GlobalAssignFn, src, dst); 200458626500527695865683d1d65053743de8770b60Fariborz Jahanian} 200558626500527695865683d1d65053743de8770b60Fariborz Jahanian 20067eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanianvoid CGObjCGNU::EmitObjCIvarAssign(CodeGen::CodeGenFunction &CGF, 20076c7a1f364796ce1acb988714e9e42076d1ce332eFariborz Jahanian llvm::Value *src, llvm::Value *dst, 20086c7a1f364796ce1acb988714e9e42076d1ce332eFariborz Jahanian llvm::Value *ivarOffset) { 2009ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall CGBuilderTy B = CGF.Builder; 2010ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall src = EnforceType(B, src, IdTy); 2011ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall dst = EnforceType(B, dst, PtrToIdTy); 2012ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall B.CreateCall3(IvarAssignFn, src, dst, ivarOffset); 20137eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanian} 20147eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanian 201558626500527695865683d1d65053743de8770b60Fariborz Jahanianvoid CGObjCGNU::EmitObjCStrongCastAssign(CodeGen::CodeGenFunction &CGF, 20161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *src, llvm::Value *dst) { 2017ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall CGBuilderTy B = CGF.Builder; 2018ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall src = EnforceType(B, src, IdTy); 2019ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall dst = EnforceType(B, dst, PtrToIdTy); 2020ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall B.CreateCall2(StrongCastAssignFn, src, dst); 202158626500527695865683d1d65053743de8770b60Fariborz Jahanian} 202258626500527695865683d1d65053743de8770b60Fariborz Jahanian 2023082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanianvoid CGObjCGNU::EmitGCMemmoveCollectable(CodeGen::CodeGenFunction &CGF, 20241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *DestPtr, 2025082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian llvm::Value *SrcPtr, 202608c321380fff07d476a19daab6d29522c046cd49Fariborz Jahanian QualType Ty) { 2027ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall CGBuilderTy B = CGF.Builder; 2028ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall DestPtr = EnforceType(B, DestPtr, IdTy); 2029ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall SrcPtr = EnforceType(B, SrcPtr, PtrToIdTy); 2030ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall 2031ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall std::pair<uint64_t, unsigned> TypeInfo = CGM.getContext().getTypeInfo(Ty); 2032ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall unsigned long size = TypeInfo.first/8; 2033ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // FIXME: size_t 2034ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall llvm::Value *N = llvm::ConstantInt::get(LongTy, size); 2035ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall 2036ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall B.CreateCall3(MemMoveFn, DestPtr, SrcPtr, N); 2037082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian} 2038082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian 20399cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanianllvm::GlobalVariable *CGObjCGNU::ObjCIvarOffsetVariable( 20409cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCInterfaceDecl *ID, 20419cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCIvarDecl *Ivar) { 20429cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const std::string Name = "__objc_ivar_offset_" + ID->getNameAsString() 20439cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian + '.' + Ivar->getNameAsString(); 20449cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // Emit the variable and initialize it with what we think the correct value 20459cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // is. This allows code compiled with non-fragile ivars to work correctly 20469cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // when linked against code which isn't (most of the time). 20478a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::GlobalVariable *IvarOffsetPointer = TheModule.getNamedGlobal(Name); 20488a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall if (!IvarOffsetPointer) { 20499cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian uint64_t Offset = ComputeIvarBaseOffset(CGM, ID, Ivar); 20509cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian llvm::ConstantInt *OffsetGuess = 2051f950837b8250c7f08d0b7b15ace0b35740721c9dDavid Chisnall llvm::ConstantInt::get(llvm::Type::getInt32Ty(VMContext), Offset, "ivar"); 20528a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // Don't emit the guess in non-PIC code because the linker will not be able 20538a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // to replace it with the real version for a library. In non-PIC code you 20548a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // must compile with the fragile ABI if you want to use ivars from a 20551eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // GCC-compiled class. 20568a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall if (CGM.getLangOptions().PICLevel) { 20578a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::GlobalVariable *IvarOffsetGV = new llvm::GlobalVariable(TheModule, 20588a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::Type::getInt32Ty(VMContext), false, 20598a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::GlobalValue::PrivateLinkage, OffsetGuess, Name+".guess"); 20608a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall IvarOffsetPointer = new llvm::GlobalVariable(TheModule, 20618a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall IvarOffsetGV->getType(), false, llvm::GlobalValue::LinkOnceAnyLinkage, 20628a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall IvarOffsetGV, Name); 20638a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall } else { 20648a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall IvarOffsetPointer = new llvm::GlobalVariable(TheModule, 20653c0ef8cc0dc246bd3083e8cdd63005e8873d36d2Benjamin Kramer llvm::Type::getInt32PtrTy(VMContext), false, 20663c0ef8cc0dc246bd3083e8cdd63005e8873d36d2Benjamin Kramer llvm::GlobalValue::ExternalLinkage, 0, Name); 20678a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall } 20689cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 20698a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall return IvarOffsetPointer; 20709cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian} 20719cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian 2072598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz JahanianLValue CGObjCGNU::EmitObjCValueForIvar(CodeGen::CodeGenFunction &CGF, 2073598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian QualType ObjectTy, 2074598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian llvm::Value *BaseValue, 2075598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian const ObjCIvarDecl *Ivar, 2076598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian unsigned CVRQualifiers) { 2077183700f494ec9b6701b6efe82bcb25f4c79ba561John McCall const ObjCInterfaceDecl *ID = ObjectTy->getAs<ObjCInterfaceType>()->getDecl(); 20789777687562c338601c2f17906e65e1c1a0aad96fDaniel Dunbar return EmitValueForIvarAtOffset(CGF, ID, BaseValue, Ivar, CVRQualifiers, 20799777687562c338601c2f17906e65e1c1a0aad96fDaniel Dunbar EmitIvarOffset(CGF, ID, Ivar)); 20800bb20361a321593887f067515dd04cf109f4c74aFariborz Jahanian} 2081bb1c8600218b3244340331165fc7cba7bf227655Mike Stump 20829cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanianstatic const ObjCInterfaceDecl *FindIvarInterface(ASTContext &Context, 20839cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCInterfaceDecl *OID, 20849cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCIvarDecl *OIVD) { 20859cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian llvm::SmallVector<ObjCIvarDecl*, 16> Ivars; 20868e6ac1d80055fa37b9b84029c7e751624ba7f84cFariborz Jahanian Context.ShallowCollectObjCIvars(OID, Ivars); 20879cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian for (unsigned k = 0, e = Ivars.size(); k != e; ++k) { 20889cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian if (OIVD == Ivars[k]) 20899cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian return OID; 20909cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 20911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 20929cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // Otherwise check in the super class. 20939cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian if (const ObjCInterfaceDecl *Super = OID->getSuperClass()) 20949cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian return FindIvarInterface(Context, Super, OIVD); 20951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 20969cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian return 0; 20979cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian} 20980bb20361a321593887f067515dd04cf109f4c74aFariborz Jahanian 2099f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanianllvm::Value *CGObjCGNU::EmitIvarOffset(CodeGen::CodeGenFunction &CGF, 21002a03192a02dbf4fdff438d1e658356bde871aba4Daniel Dunbar const ObjCInterfaceDecl *Interface, 2101f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian const ObjCIvarDecl *Ivar) { 21028a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall if (CGM.getLangOptions().ObjCNonFragileABI) { 21039cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian Interface = FindIvarInterface(CGM.getContext(), Interface, Ivar); 21048a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall return CGF.Builder.CreateLoad(CGF.Builder.CreateLoad( 21058a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall ObjCIvarOffsetVariable(Interface, Ivar), false, "ivar")); 21069cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 21079777687562c338601c2f17906e65e1c1a0aad96fDaniel Dunbar uint64_t Offset = ComputeIvarBaseOffset(CGF.CGM, Interface, Ivar); 21084a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson return llvm::ConstantInt::get(LongTy, Offset, "ivar"); 2109f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian} 2110f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian 2111bb1c8600218b3244340331165fc7cba7bf227655Mike StumpCodeGen::CGObjCRuntime * 2112bb1c8600218b3244340331165fc7cba7bf227655Mike StumpCodeGen::CreateGNUObjCRuntime(CodeGen::CodeGenModule &CGM) { 2113dce1406f1c1f572cfd61c494546572d63461c741Chris Lattner return new CGObjCGNU(CGM); 21140f984268b05edab2cc555a427c441baa9c252658Chris Lattner} 2115