CGObjCGNU.cpp revision 8a5a9aaddb627c0884c2ed8db55cc29fdb601195
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; 460f984268b05edab2cc555a427c441baa9c252658Chris Lattner 470f984268b05edab2cc555a427c441baa9c252658Chris Lattnernamespace { 48dce1406f1c1f572cfd61c494546572d63461c741Chris Lattnerclass CGObjCGNU : public CodeGen::CGObjCRuntime { 490f984268b05edab2cc555a427c441baa9c252658Chris Lattnerprivate: 50dce1406f1c1f572cfd61c494546572d63461c741Chris Lattner CodeGen::CodeGenModule &CGM; 510f984268b05edab2cc555a427c441baa9c252658Chris Lattner llvm::Module &TheModule; 52e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::PointerType *SelectorTy; 53e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::PointerType *PtrToInt8Ty; 54b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian const llvm::FunctionType *IMPTy; 55e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::PointerType *IdTy; 560f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall QualType ASTIdTy; 57e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::IntegerType *IntTy; 58e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::PointerType *PtrTy; 59e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::IntegerType *LongTy; 60e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::PointerType *PtrToIntTy; 615efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar llvm::GlobalAlias *ClassPtrAlias; 625efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar llvm::GlobalAlias *MetaClassPtrAlias; 6320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Classes; 6420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Categories; 6520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> ConstantStrings; 6620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Function *LoadFunction; 6720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StringMap<llvm::Constant*> ExistingProtocols; 6820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov typedef std::pair<std::string, std::string> TypedSelector; 6920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::map<TypedSelector, llvm::GlobalAlias*> TypedSelectors; 7020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StringMap<llvm::GlobalAlias*> UntypedSelectors; 7120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Some zeros used for GEPs in lots of places. 7220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Zeros[2]; 7320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *NULLPtr; 74a1cf15f4680e5cf39e72e28c5ea854fcba792e84Owen Anderson llvm::LLVMContext &VMContext; 7520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovprivate: 7620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateIvarList( 7720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarNames, 7820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarTypes, 7920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarOffsets); 8020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateMethodList(const std::string &ClassName, 8120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const std::string &CategoryName, 82a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner const llvm::SmallVectorImpl<Selector> &MethodSels, 8320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &MethodTypes, 8420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov bool isClassMethodList); 85f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::Constant *GenerateEmptyProtocol(const std::string &ProtocolName); 8620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateProtocolList( 8720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<std::string> &Protocols); 8820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateClassStructure( 8920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MetaClass, 9020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SuperClass, 9120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov unsigned info, 92d002cc6fc5b72bf00e3b7b4571ccf0f23c789b4bChris Lattner const char *Name, 9320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Version, 9420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *InstanceSize, 9520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *IVars, 9620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Methods, 9720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Protocols); 9820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateProtocolMethodList( 9920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &MethodNames, 10020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &MethodTypes); 10120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MakeConstantString(const std::string &Str, const std::string 10220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov &Name=""); 10320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MakeGlobal(const llvm::StructType *Ty, 10420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> &V, const std::string &Name=""); 10520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MakeGlobal(const llvm::ArrayType *Ty, 10620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> &V, const std::string &Name=""); 1079cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian llvm::GlobalVariable *ObjCIvarOffsetVariable(const ObjCInterfaceDecl *ID, 1089cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCIvarDecl *Ivar); 1092a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner void EmitClassRef(const std::string &className); 1100f984268b05edab2cc555a427c441baa9c252658Chris Lattnerpublic: 111dce1406f1c1f572cfd61c494546572d63461c741Chris Lattner CGObjCGNU(CodeGen::CodeGenModule &cgm); 11233fdb738a6c125f4c788733897021b7c1a062b0cSteve Naroff virtual llvm::Constant *GenerateConstantString(const ObjCStringLiteral *); 1138f2926b73ed635afecd020da787af6a837601a2bDaniel Dunbar virtual CodeGen::RValue 1148f2926b73ed635afecd020da787af6a837601a2bDaniel Dunbar GenerateMessageSend(CodeGen::CodeGenFunction &CGF, 1157f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar QualType ResultType, 1167f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar Selector Sel, 117f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar llvm::Value *Receiver, 11819cd87eb5fb3c197e631ce08fd52c446c4d4e8f1Daniel Dunbar bool IsClassMessage, 119df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian const CallArgList &CallArgs, 120df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian const ObjCMethodDecl *Method); 1218f2926b73ed635afecd020da787af6a837601a2bDaniel Dunbar virtual CodeGen::RValue 1228f2926b73ed635afecd020da787af6a837601a2bDaniel Dunbar GenerateMessageSendSuper(CodeGen::CodeGenFunction &CGF, 1237f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar QualType ResultType, 1247f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar Selector Sel, 125f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar const ObjCInterfaceDecl *Class, 1267ce77920a35060f1c8dd72e541e42ce296ccd168Fariborz Jahanian bool isCategoryImpl, 127f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar llvm::Value *Receiver, 12819cd87eb5fb3c197e631ce08fd52c446c4d4e8f1Daniel Dunbar bool IsClassMessage, 12919cd87eb5fb3c197e631ce08fd52c446c4d4e8f1Daniel Dunbar const CallArgList &CallArgs); 13045d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbar virtual llvm::Value *GetClass(CGBuilderTy &Builder, 131ddb2a3d55a24a1dbdf9152621642d9a4b4fc2f61Daniel Dunbar const ObjCInterfaceDecl *OID); 13245d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbar virtual llvm::Value *GetSelector(CGBuilderTy &Builder, Selector Sel); 133df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian virtual llvm::Value *GetSelector(CGBuilderTy &Builder, const ObjCMethodDecl 134df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian *Method); 1358e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner 136679a502d462ef819e6175b58e255ca3f3391e7cfFariborz Jahanian virtual llvm::Function *GenerateMethod(const ObjCMethodDecl *OMD, 137679a502d462ef819e6175b58e255ca3f3391e7cfFariborz Jahanian const ObjCContainerDecl *CD); 1387ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar virtual void GenerateCategory(const ObjCCategoryImplDecl *CMD); 1397ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar virtual void GenerateClass(const ObjCImplementationDecl *ClassDecl); 14045d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbar virtual llvm::Value *GenerateProtocolRef(CGBuilderTy &Builder, 141af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar const ObjCProtocolDecl *PD); 142af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar virtual void GenerateProtocol(const ObjCProtocolDecl *PD); 14320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov virtual llvm::Function *ModuleInitFunction(); 14449f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar virtual llvm::Function *GetPropertyGetFunction(); 14549f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar virtual llvm::Function *GetPropertySetFunction(); 146309a4368cd299cff30ab22709e2b772cf8059e45Daniel Dunbar virtual llvm::Constant *EnumerationMutationFunction(); 14764d5d6c5903157c521af496479d06dc26032d718Anders Carlsson 148bd71be4683c195260d5245118b1e13e6b2e20504Fariborz Jahanian virtual void EmitTryOrSynchronizedStmt(CodeGen::CodeGenFunction &CGF, 149bd71be4683c195260d5245118b1e13e6b2e20504Fariborz Jahanian const Stmt &S); 15064d5d6c5903157c521af496479d06dc26032d718Anders Carlsson virtual void EmitThrowStmt(CodeGen::CodeGenFunction &CGF, 15164d5d6c5903157c521af496479d06dc26032d718Anders Carlsson const ObjCAtThrowStmt &S); 1523e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian virtual llvm::Value * EmitObjCWeakRead(CodeGen::CodeGenFunction &CGF, 1536dc2317b59cb1180a59f6c283d96b7a5dfeb5307Fariborz Jahanian llvm::Value *AddrWeakObj); 1543e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian virtual void EmitObjCWeakAssign(CodeGen::CodeGenFunction &CGF, 1553e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian llvm::Value *src, llvm::Value *dst); 15658626500527695865683d1d65053743de8770b60Fariborz Jahanian virtual void EmitObjCGlobalAssign(CodeGen::CodeGenFunction &CGF, 15758626500527695865683d1d65053743de8770b60Fariborz Jahanian llvm::Value *src, llvm::Value *dest); 1587eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanian virtual void EmitObjCIvarAssign(CodeGen::CodeGenFunction &CGF, 1597eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanian llvm::Value *src, llvm::Value *dest); 16058626500527695865683d1d65053743de8770b60Fariborz Jahanian virtual void EmitObjCStrongCastAssign(CodeGen::CodeGenFunction &CGF, 16158626500527695865683d1d65053743de8770b60Fariborz Jahanian llvm::Value *src, llvm::Value *dest); 162082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian virtual void EmitGCMemmoveCollectable(CodeGen::CodeGenFunction &CGF, 163082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian llvm::Value *DestPtr, 164082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian llvm::Value *SrcPtr, 165082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian unsigned long size); 166598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian virtual LValue EmitObjCValueForIvar(CodeGen::CodeGenFunction &CGF, 167598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian QualType ObjectTy, 168598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian llvm::Value *BaseValue, 169598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian const ObjCIvarDecl *Ivar, 170598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian unsigned CVRQualifiers); 171f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian virtual llvm::Value *EmitIvarOffset(CodeGen::CodeGenFunction &CGF, 1722a03192a02dbf4fdff438d1e658356bde871aba4Daniel Dunbar const ObjCInterfaceDecl *Interface, 173f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian const ObjCIvarDecl *Ivar); 1740f984268b05edab2cc555a427c441baa9c252658Chris Lattner}; 1750f984268b05edab2cc555a427c441baa9c252658Chris Lattner} // end anonymous namespace 1760f984268b05edab2cc555a427c441baa9c252658Chris Lattner 17720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 1782a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner/// Emits a reference to a dummy variable which is emitted with each class. 1792a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner/// This ensures that a linker error will be generated when trying to link 1802a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner/// together modules where a referenced class is not defined. 181bb1c8600218b3244340331165fc7cba7bf227655Mike Stumpvoid CGObjCGNU::EmitClassRef(const std::string &className) { 1822a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner std::string symbolRef = "__objc_class_ref_" + className; 1832a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner // Don't emit two copies of the same symbol 184bb1c8600218b3244340331165fc7cba7bf227655Mike Stump if (TheModule.getGlobalVariable(symbolRef)) 185bb1c8600218b3244340331165fc7cba7bf227655Mike Stump return; 1862a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner std::string symbolName = "__objc_class_name_" + className; 1872a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner llvm::GlobalVariable *ClassSymbol = TheModule.getGlobalVariable(symbolName); 1882a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner if (!ClassSymbol) { 1891c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson ClassSymbol = new llvm::GlobalVariable(TheModule, LongTy, false, 1901c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson llvm::GlobalValue::ExternalLinkage, 0, symbolName); 1912a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner } 1921c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson new llvm::GlobalVariable(TheModule, ClassSymbol->getType(), true, 193f35271b8677a5f31498b89587b1da42a06dd46fdChris Lattner llvm::GlobalValue::WeakAnyLinkage, ClassSymbol, symbolRef); 1942a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner} 19520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 19620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovstatic std::string SymbolNameForClass(const std::string &ClassName) { 1972a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner return "_OBJC_CLASS_" + ClassName; 19820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 19920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 20020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovstatic std::string SymbolNameForMethod(const std::string &ClassName, const 20120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::string &CategoryName, const std::string &MethodName, bool isClassMethod) 20220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov{ 2032a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner return "_OBJC_METHOD_" + ClassName + "("+CategoryName+")"+ 20420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov (isClassMethod ? "+" : "-") + MethodName; 20520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 20620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 207dce1406f1c1f572cfd61c494546572d63461c741Chris LattnerCGObjCGNU::CGObjCGNU(CodeGen::CodeGenModule &cgm) 2085efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar : CGM(cgm), TheModule(CGM.getModule()), ClassPtrAlias(0), 209a1cf15f4680e5cf39e72e28c5ea854fcba792e84Owen Anderson MetaClassPtrAlias(0), VMContext(cgm.getLLVMContext()) { 210e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner IntTy = cast<llvm::IntegerType>( 211e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner CGM.getTypes().ConvertType(CGM.getContext().IntTy)); 212e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner LongTy = cast<llvm::IntegerType>( 213e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner CGM.getTypes().ConvertType(CGM.getContext().LongTy)); 214dce1406f1c1f572cfd61c494546572d63461c741Chris Lattner 2154a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Zeros[0] = llvm::ConstantInt::get(LongTy, 0); 21620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Zeros[1] = Zeros[0]; 21703e205031b08669f05c41eed5b896fc94c4a12bbOwen Anderson NULLPtr = llvm::ConstantPointerNull::get( 2180032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::PointerType::getUnqual(llvm::Type::getInt8Ty(VMContext))); 219391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner // C string type. Used in lots of places. 220391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner PtrToInt8Ty = 2210032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::PointerType::getUnqual(llvm::Type::getInt8Ty(VMContext)); 222391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner // Get the selector Type. 223e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner SelectorTy = cast<llvm::PointerType>( 224e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner CGM.getTypes().ConvertType(CGM.getContext().getObjCSelType())); 225e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner 22696e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson PtrToIntTy = llvm::PointerType::getUnqual(IntTy); 227391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner PtrTy = PtrToInt8Ty; 228391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner 229391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner // Object type 2300f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall ASTIdTy = CGM.getContext().getObjCIdType(); 2310f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall IdTy = cast<llvm::PointerType>(CGM.getTypes().ConvertType(ASTIdTy)); 232391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner 233391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner // IMP type 234391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner std::vector<const llvm::Type*> IMPArgs; 235391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner IMPArgs.push_back(IdTy); 236391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner IMPArgs.push_back(SelectorTy); 23796e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson IMPTy = llvm::FunctionType::get(IdTy, IMPArgs, true); 23820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 239bb1c8600218b3244340331165fc7cba7bf227655Mike Stump 24020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// This has to perform the lookup every time, since posing and related 24120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// techniques can modify the name -> class mapping. 24245d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbarllvm::Value *CGObjCGNU::GetClass(CGBuilderTy &Builder, 243ddb2a3d55a24a1dbdf9152621642d9a4b4fc2f61Daniel Dunbar const ObjCInterfaceDecl *OID) { 244d9d22dd9c94618490dbffb0e2caf222530ca39d3Chris Lattner llvm::Value *ClassName = CGM.GetAddrOfConstantCString(OID->getNameAsString()); 2452a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner EmitClassRef(OID->getNameAsString()); 246ddb2a3d55a24a1dbdf9152621642d9a4b4fc2f61Daniel Dunbar ClassName = Builder.CreateStructGEP(ClassName, 0); 247ddb2a3d55a24a1dbdf9152621642d9a4b4fc2f61Daniel Dunbar 24826c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian std::vector<const llvm::Type*> Params(1, PtrToInt8Ty); 24920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ClassLookupFn = 25096e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson CGM.CreateRuntimeFunction(llvm::FunctionType::get(IdTy, 25126c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian Params, 25226c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian true), 25326c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian "objc_lookup_class"); 25420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return Builder.CreateCall(ClassLookupFn, ClassName); 255391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner} 256391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner 25745d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbarllvm::Value *CGObjCGNU::GetSelector(CGBuilderTy &Builder, Selector Sel) { 258077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner llvm::GlobalAlias *&US = UntypedSelectors[Sel.getAsString()]; 2598e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner if (US == 0) 26096e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson US = new llvm::GlobalAlias(llvm::PointerType::getUnqual(SelectorTy), 2610f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall llvm::GlobalValue::PrivateLinkage, 2620f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall ".objc_untyped_selector_alias"+Sel.getAsString(), 2638e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner NULL, &TheModule); 2648e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner 2658e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner return Builder.CreateLoad(US); 266df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian} 267df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian 268df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanianllvm::Value *CGObjCGNU::GetSelector(CGBuilderTy &Builder, const ObjCMethodDecl 269df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian *Method) { 270df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian 271df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian std::string SelName = Method->getSelector().getAsString(); 272df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian std::string SelTypes; 273df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian CGM.getContext().getObjCEncodingForMethodDecl(Method, SelTypes); 274df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian // Typed selectors 275df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian TypedSelector Selector = TypedSelector(SelName, 276df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian SelTypes); 277df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian 278df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian // If it's already cached, return it. 279bb1c8600218b3244340331165fc7cba7bf227655Mike Stump if (TypedSelectors[Selector]) { 280bb1c8600218b3244340331165fc7cba7bf227655Mike Stump return Builder.CreateLoad(TypedSelectors[Selector]); 281df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian } 282df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian 283df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian // If it isn't, cache it. 284df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian llvm::GlobalAlias *Sel = new llvm::GlobalAlias( 28596e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(SelectorTy), 2860f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall llvm::GlobalValue::PrivateLinkage, ".objc_selector_alias" + SelName, 287df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian NULL, &TheModule); 288df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian TypedSelectors[Selector] = Sel; 289df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian 290df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian return Builder.CreateLoad(Sel); 2918e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner} 2928e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner 2935e7dcc62e4637591959f9c372f6c5258d0d263e0Chris Lattnerllvm::Constant *CGObjCGNU::MakeConstantString(const std::string &Str, 2945e7dcc62e4637591959f9c372f6c5258d0d263e0Chris Lattner const std::string &Name) { 2958a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::Constant *ConstStr = CGM.GetAddrOfConstantCString(Str, Name.c_str()); 2963c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson return llvm::ConstantExpr::getGetElementPtr(ConstStr, Zeros, 2); 29720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 298bb1c8600218b3244340331165fc7cba7bf227655Mike Stump 29920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::MakeGlobal(const llvm::StructType *Ty, 30020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> &V, const std::string &Name) { 30108e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson llvm::Constant *C = llvm::ConstantStruct::get(Ty, V); 3021c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson return new llvm::GlobalVariable(TheModule, Ty, false, 3031c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson llvm::GlobalValue::InternalLinkage, C, Name); 30420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 305bb1c8600218b3244340331165fc7cba7bf227655Mike Stump 30620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::MakeGlobal(const llvm::ArrayType *Ty, 30720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> &V, const std::string &Name) { 3087db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson llvm::Constant *C = llvm::ConstantArray::get(Ty, V); 3091c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson return new llvm::GlobalVariable(TheModule, Ty, false, 310bb1c8600218b3244340331165fc7cba7bf227655Mike Stump llvm::GlobalValue::InternalLinkage, C, Name); 31120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 31220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 31320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// Generate an NSConstantString object. 31420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov//TODO: In case there are any crazy people still using the GNU runtime without 31520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov//an OpenStep implementation, this should let them select their own class for 31620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov//constant strings. 31733fdb738a6c125f4c788733897021b7c1a062b0cSteve Naroffllvm::Constant *CGObjCGNU::GenerateConstantString(const ObjCStringLiteral *SL) { 31833fdb738a6c125f4c788733897021b7c1a062b0cSteve Naroff std::string Str(SL->getString()->getStrData(), 31933fdb738a6c125f4c788733897021b7c1a062b0cSteve Naroff SL->getString()->getByteLength()); 32020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Ivars; 32120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Ivars.push_back(NULLPtr); 32213fd7e5111032f54b538dd66d035b0ccc1f82467Chris Lattner Ivars.push_back(MakeConstantString(Str)); 3234a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Ivars.push_back(llvm::ConstantInt::get(IntTy, Str.size())); 32420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ObjCStr = MakeGlobal( 32547a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType::get(VMContext, PtrToInt8Ty, PtrToInt8Ty, IntTy, NULL), 32620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Ivars, ".objc_str"); 32720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ConstantStrings.push_back( 3283c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::ConstantExpr::getBitCast(ObjCStr, PtrToInt8Ty)); 32920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return ObjCStr; 33020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 33120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 33220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov///Generates a message send where the super is the receiver. This is a message 33320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov///send to self with special delivery semantics indicating which class's method 33420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov///should be called. 3358f2926b73ed635afecd020da787af6a837601a2bDaniel DunbarCodeGen::RValue 3368f2926b73ed635afecd020da787af6a837601a2bDaniel DunbarCGObjCGNU::GenerateMessageSendSuper(CodeGen::CodeGenFunction &CGF, 3377f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar QualType ResultType, 3387f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar Selector Sel, 339f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar const ObjCInterfaceDecl *Class, 3407ce77920a35060f1c8dd72e541e42ce296ccd168Fariborz Jahanian bool isCategoryImpl, 341f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar llvm::Value *Receiver, 34219cd87eb5fb3c197e631ce08fd52c446c4d4e8f1Daniel Dunbar bool IsClassMessage, 34319cd87eb5fb3c197e631ce08fd52c446c4d4e8f1Daniel Dunbar const CallArgList &CallArgs) { 344b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian llvm::Value *cmd = GetSelector(CGF.Builder, Sel); 345b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 346b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CallArgList ActualArgs; 347b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 348b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian ActualArgs.push_back( 3490f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall std::make_pair(RValue::get(CGF.Builder.CreateBitCast(Receiver, IdTy)), 3500f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall ASTIdTy)); 351b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian ActualArgs.push_back(std::make_pair(RValue::get(cmd), 352b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CGF.getContext().getObjCSelType())); 353b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian ActualArgs.insert(ActualArgs.end(), CallArgs.begin(), CallArgs.end()); 354b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 355b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CodeGenTypes &Types = CGM.getTypes(); 356b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian const CGFunctionInfo &FnInfo = Types.getFunctionInfo(ResultType, ActualArgs); 357b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian const llvm::FunctionType *impType = Types.GetFunctionType(FnInfo, false); 358b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 3595efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar llvm::Value *ReceiverClass = 0; 36048e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (isCategoryImpl) { 36148e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner llvm::Constant *classLookupFunction = 0; 36248e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner std::vector<const llvm::Type*> Params; 36348e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner Params.push_back(PtrTy); 36448e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (IsClassMessage) { 36596e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson classLookupFunction = CGM.CreateRuntimeFunction(llvm::FunctionType::get( 36648e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner IdTy, Params, true), "objc_get_meta_class"); 36748e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner } else { 36896e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson classLookupFunction = CGM.CreateRuntimeFunction(llvm::FunctionType::get( 36948e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner IdTy, Params, true), "objc_get_class"); 3705efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } 37148e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner ReceiverClass = CGF.Builder.CreateCall(classLookupFunction, 37248e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner MakeConstantString(Class->getNameAsString())); 3735efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } else { 37448e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner // Set up global aliases for the metaclass or class pointer if they do not 37548e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner // already exist. These will are forward-references which will be set to 376bb1c8600218b3244340331165fc7cba7bf227655Mike Stump // pointers to the class and metaclass structure created for the runtime 377bb1c8600218b3244340331165fc7cba7bf227655Mike Stump // load function. To send a message to super, we look up the value of the 37848e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner // super_class pointer from either the class or metaclass structure. 37948e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (IsClassMessage) { 38048e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (!MetaClassPtrAlias) { 38148e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner MetaClassPtrAlias = new llvm::GlobalAlias(IdTy, 38248e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner llvm::GlobalValue::InternalLinkage, ".objc_metaclass_ref" + 38348e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner Class->getNameAsString(), NULL, &TheModule); 38448e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner } 38548e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner ReceiverClass = MetaClassPtrAlias; 38648e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner } else { 38748e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (!ClassPtrAlias) { 38848e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner ClassPtrAlias = new llvm::GlobalAlias(IdTy, 38948e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner llvm::GlobalValue::InternalLinkage, ".objc_class_ref" + 39048e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner Class->getNameAsString(), NULL, &TheModule); 39148e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner } 39248e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner ReceiverClass = ClassPtrAlias; 3935efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } 39471238f67c5df13eef19450d66b7a7ab28377192aChris Lattner } 3955efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar // Cast the pointer to a simplified version of the class structure 3965efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar ReceiverClass = CGF.Builder.CreateBitCast(ReceiverClass, 39796e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual( 39847a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType::get(VMContext, IdTy, IdTy, NULL))); 3995efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar // Get the superclass pointer 4005efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar ReceiverClass = CGF.Builder.CreateStructGEP(ReceiverClass, 1); 4015efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar // Load the superclass pointer 4025efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar ReceiverClass = CGF.Builder.CreateLoad(ReceiverClass); 40320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Construct the structure used to look up the IMP 40447a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType *ObjCSuperTy = llvm::StructType::get(VMContext, 40547a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson Receiver->getType(), IdTy, NULL); 4068f2926b73ed635afecd020da787af6a837601a2bDaniel Dunbar llvm::Value *ObjCSuper = CGF.Builder.CreateAlloca(ObjCSuperTy); 407b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 4088f2926b73ed635afecd020da787af6a837601a2bDaniel Dunbar CGF.Builder.CreateStore(Receiver, CGF.Builder.CreateStructGEP(ObjCSuper, 0)); 4095efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar CGF.Builder.CreateStore(ReceiverClass, 4105efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar CGF.Builder.CreateStructGEP(ObjCSuper, 1)); 41120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 41220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Get the IMP 41326c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian std::vector<const llvm::Type*> Params; 41496e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson Params.push_back(llvm::PointerType::getUnqual(ObjCSuperTy)); 41526c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian Params.push_back(SelectorTy); 41620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *lookupFunction = 41796e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson CGM.CreateRuntimeFunction(llvm::FunctionType::get( 41896e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(impType), Params, true), 41926c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian "objc_msg_lookup_super"); 42026c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian 42120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Value *lookupArgs[] = {ObjCSuper, cmd}; 4228f2926b73ed635afecd020da787af6a837601a2bDaniel Dunbar llvm::Value *imp = CGF.Builder.CreateCall(lookupFunction, lookupArgs, 42320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov lookupArgs+2); 42420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 425b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian return CGF.EmitCall(FnInfo, imp, ActualArgs); 42620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 42720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 42820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// Generate code for a message send expression. 4298f2926b73ed635afecd020da787af6a837601a2bDaniel DunbarCodeGen::RValue 4308f2926b73ed635afecd020da787af6a837601a2bDaniel DunbarCGObjCGNU::GenerateMessageSend(CodeGen::CodeGenFunction &CGF, 4317f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar QualType ResultType, 4327f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar Selector Sel, 433f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar llvm::Value *Receiver, 43419cd87eb5fb3c197e631ce08fd52c446c4d4e8f1Daniel Dunbar bool IsClassMessage, 435df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian const CallArgList &CallArgs, 436df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian const ObjCMethodDecl *Method) { 4370f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall IdTy = cast<llvm::PointerType>(CGM.getTypes().ConvertType(ASTIdTy)); 438df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian llvm::Value *cmd; 439df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian if (Method) 440df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian cmd = GetSelector(CGF.Builder, Method); 441df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian else 442df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian cmd = GetSelector(CGF.Builder, Sel); 443b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CallArgList ActualArgs; 444b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 445b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian ActualArgs.push_back( 4460f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall std::make_pair(RValue::get(CGF.Builder.CreateBitCast(Receiver, IdTy)), ASTIdTy)); 447b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian ActualArgs.push_back(std::make_pair(RValue::get(cmd), 448b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CGF.getContext().getObjCSelType())); 449b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian ActualArgs.insert(ActualArgs.end(), CallArgs.begin(), CallArgs.end()); 450b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 451b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CodeGenTypes &Types = CGM.getTypes(); 452b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian const CGFunctionInfo &FnInfo = Types.getFunctionInfo(ResultType, ActualArgs); 453b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian const llvm::FunctionType *impType = Types.GetFunctionType(FnInfo, false); 4540f984268b05edab2cc555a427c441baa9c252658Chris Lattner 45534e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian llvm::Value *imp; 45626c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian std::vector<const llvm::Type*> Params; 45726c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian Params.push_back(Receiver->getType()); 45826c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian Params.push_back(SelectorTy); 45934e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian // For sender-aware dispatch, we pass the sender as the third argument to a 46034e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian // lookup function. When sending messages from C code, the sender is nil. 46134e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian // objc_msg_lookup_sender(id receiver, SEL selector, id sender); 46234e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian if (CGM.getContext().getLangOptions().ObjCSenderDispatch) { 46334e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian llvm::Value *self; 46434e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian 46534e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian if (isa<ObjCMethodDecl>(CGF.CurFuncDecl)) { 46634e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian self = CGF.LoadObjCSelf(); 46734e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian } else { 46803e205031b08669f05c41eed5b896fc94c4a12bbOwen Anderson self = llvm::ConstantPointerNull::get(IdTy); 46934e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian } 47034e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian Params.push_back(self->getType()); 47134e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian llvm::Constant *lookupFunction = 47296e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson CGM.CreateRuntimeFunction(llvm::FunctionType::get( 47396e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(impType), Params, true), 47434e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian "objc_msg_lookup_sender"); 47526c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian 47634e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian imp = CGF.Builder.CreateCall3(lookupFunction, Receiver, cmd, self); 47734e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian } else { 47834e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian llvm::Constant *lookupFunction = 47996e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson CGM.CreateRuntimeFunction(llvm::FunctionType::get( 48096e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(impType), Params, true), 48134e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian "objc_msg_lookup"); 48234e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian 48334e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian imp = CGF.Builder.CreateCall2(lookupFunction, Receiver, cmd); 48434e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian } 4853eae03e7d165f20a863a9a4d7122ba2a691ab16dChris Lattner 486b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian return CGF.EmitCall(FnInfo, imp, ActualArgs); 48720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 48820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 48920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// Generates a MethodList. Used in construction of a objc_class and 49020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// objc_category structures. 49120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::GenerateMethodList(const std::string &ClassName, 492a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner const std::string &CategoryName, 493a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner const llvm::SmallVectorImpl<Selector> &MethodSels, 49420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &MethodTypes, 49520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov bool isClassMethodList) { 4960f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall if (MethodSels.empty()) 4970f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall return NULLPtr; 49820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Get the method structure type. 49947a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType *ObjCMethodTy = llvm::StructType::get(VMContext, 50020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // Really a selector, but the runtime creates it us. 50120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // Method types 50296e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(IMPTy), //Method pointer 50320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 50420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Methods; 50520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 50620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (unsigned int i = 0, e = MethodTypes.size(); i < e; ++i) { 50720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 5081e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian if (llvm::Constant *Method = 50920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov TheModule.getFunction(SymbolNameForMethod(ClassName, CategoryName, 510077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner MethodSels[i].getAsString(), 5111e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian isClassMethodList))) { 5128a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::Constant *C = MakeConstantString(MethodSels[i].getAsString()); 5138a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall Elements.push_back(C); 5148a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall Elements.push_back(MethodTypes[i]); 5153c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Method = llvm::ConstantExpr::getBitCast(Method, 51696e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(IMPTy)); 5171e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian Elements.push_back(Method); 51808e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson Methods.push_back(llvm::ConstantStruct::get(ObjCMethodTy, Elements)); 5191e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian } 52020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 52120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 52220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Array of method structures 52396e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *ObjCMethodArrayTy = llvm::ArrayType::get(ObjCMethodTy, 5241e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian Methods.size()); 5257db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson llvm::Constant *MethodArray = llvm::ConstantArray::get(ObjCMethodArrayTy, 526fba676396703e87a5034e5f308aa30a633468f66Chris Lattner Methods); 52720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 52820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Structure containing list pointer, array and array count 52920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::SmallVector<const llvm::Type*, 16> ObjCMethodListFields; 5308c8f69ec1477424e11faef6b235505584d61e522Owen Anderson llvm::PATypeHolder OpaqueNextTy = llvm::OpaqueType::get(VMContext); 53196e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::Type *NextPtrTy = llvm::PointerType::getUnqual(OpaqueNextTy); 53247a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType *ObjCMethodListTy = llvm::StructType::get(VMContext, 53347a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson NextPtrTy, 53420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IntTy, 53520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ObjCMethodArrayTy, 53620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 53720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Refine next pointer type to concrete type 53820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::cast<llvm::OpaqueType>( 53920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov OpaqueNextTy.get())->refineAbstractTypeTo(ObjCMethodListTy); 54020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ObjCMethodListTy = llvm::cast<llvm::StructType>(OpaqueNextTy.get()); 54120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 54220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.clear(); 54303e205031b08669f05c41eed5b896fc94c4a12bbOwen Anderson Methods.push_back(llvm::ConstantPointerNull::get( 54496e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(ObjCMethodListTy))); 5450032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson Methods.push_back(llvm::ConstantInt::get(llvm::Type::getInt32Ty(VMContext), 54620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov MethodTypes.size())); 54720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.push_back(MethodArray); 54820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 54920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an instance of the structure 55020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ObjCMethodListTy, Methods, ".objc_method_list"); 55120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 55220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 55320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// Generates an IvarList. Used in construction of a objc_class. 55420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::GenerateIvarList( 55520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarNames, 55620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarTypes, 55720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarOffsets) { 55820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Get the method structure type. 55947a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType *ObjCIvarTy = llvm::StructType::get(VMContext, 56020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 56120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 56220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IntTy, 56320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 56420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Ivars; 56520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 56620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (unsigned int i = 0, e = IvarNames.size() ; i < e ; i++) { 56720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 5688a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall Elements.push_back(IvarNames[i]); 5698a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall Elements.push_back(IvarTypes[i]); 57020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(IvarOffsets[i]); 57108e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson Ivars.push_back(llvm::ConstantStruct::get(ObjCIvarTy, Elements)); 57220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 57320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 57420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Array of method structures 57596e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *ObjCIvarArrayTy = llvm::ArrayType::get(ObjCIvarTy, 57620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IvarNames.size()); 57720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 57820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 57920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 5804a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Elements.push_back(llvm::ConstantInt::get(IntTy, (int)IvarNames.size())); 5817db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson Elements.push_back(llvm::ConstantArray::get(ObjCIvarArrayTy, Ivars)); 58220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Structure containing array and array count 58347a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType *ObjCIvarListTy = llvm::StructType::get(VMContext, IntTy, 58420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ObjCIvarArrayTy, 58520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 58620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 58720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an instance of the structure 58820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ObjCIvarListTy, Elements, ".objc_ivar_list"); 5890f984268b05edab2cc555a427c441baa9c252658Chris Lattner} 5900f984268b05edab2cc555a427c441baa9c252658Chris Lattner 59120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// Generate a class structure 59220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::GenerateClassStructure( 59320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MetaClass, 59420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SuperClass, 59520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov unsigned info, 596d002cc6fc5b72bf00e3b7b4571ccf0f23c789b4bChris Lattner const char *Name, 59720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Version, 59820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *InstanceSize, 59920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *IVars, 60020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Methods, 60120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Protocols) { 60220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Set up the class structure 60320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Note: Several of these are char*s when they should be ids. This is 60420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // because the runtime performs this translation on load. 60547a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType *ClassTy = llvm::StructType::get(VMContext, 60620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // class_pointer 60720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // super_class 60820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // name 60920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov LongTy, // version 61020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov LongTy, // info 61120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov LongTy, // instance_size 61220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IVars->getType(), // ivars 61320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods->getType(), // methods 61420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // These are all filled in by the runtime, so we pretend 61520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // dtable 61620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // subclass_list 61720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // sibling_class 61820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // protocols 61920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // gc_object_type 62020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 6214a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson llvm::Constant *Zero = llvm::ConstantInt::get(LongTy, 0); 62220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *NullP = 62303e205031b08669f05c41eed5b896fc94c4a12bbOwen Anderson llvm::ConstantPointerNull::get(PtrTy); 62420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Fill in the structure 62520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 6263c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getBitCast(MetaClass, PtrToInt8Ty)); 62720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(SuperClass); 628d002cc6fc5b72bf00e3b7b4571ccf0f23c789b4bChris Lattner Elements.push_back(MakeConstantString(Name, ".class_name")); 62920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(Zero); 6304a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Elements.push_back(llvm::ConstantInt::get(LongTy, info)); 63120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(InstanceSize); 63220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(IVars); 63320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(Methods); 63420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NullP); 63520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NullP); 63620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NullP); 6373c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getBitCast(Protocols, PtrTy)); 63820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NullP); 63920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an instance of the structure 6401565e0364b05d163640dd2b6feed43bae67df4fdChris Lattner return MakeGlobal(ClassTy, Elements, SymbolNameForClass(Name)); 64120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 64220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 64320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::GenerateProtocolMethodList( 64420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &MethodNames, 64520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &MethodTypes) { 64620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Get the method structure type. 64747a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType *ObjCMethodDescTy = llvm::StructType::get(VMContext, 64820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // Really a selector, but the runtime does the casting for us. 64920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 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(); 6558a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall Elements.push_back(MethodNames[i]); 6568a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall Elements.push_back(MethodTypes[i]); 65708e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson Methods.push_back(llvm::ConstantStruct::get(ObjCMethodDescTy, Elements)); 65820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 65996e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *ObjCMethodArrayTy = llvm::ArrayType::get(ObjCMethodDescTy, 66020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov MethodNames.size()); 6617db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson llvm::Constant *Array = llvm::ConstantArray::get(ObjCMethodArrayTy, 662bb1c8600218b3244340331165fc7cba7bf227655Mike Stump Methods); 66347a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType *ObjCMethodDescListTy = llvm::StructType::get(VMContext, 66420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IntTy, ObjCMethodArrayTy, NULL); 66520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.clear(); 6664a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Methods.push_back(llvm::ConstantInt::get(IntTy, MethodNames.size())); 66720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.push_back(Array); 66820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ObjCMethodDescListTy, Methods, ".objc_method_list"); 66920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 670bb1c8600218b3244340331165fc7cba7bf227655Mike Stump 67120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// Create the protocol list structure used in classes, categories and so on 67220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::GenerateProtocolList( 67320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<std::string> &Protocols) { 67496e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *ProtocolArrayTy = llvm::ArrayType::get(PtrToInt8Ty, 67520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Protocols.size()); 67647a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType *ProtocolListTy = llvm::StructType::get(VMContext, 67720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, //Should be a recurisve pointer, but it's always NULL here. 67820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov LongTy,//FIXME: Should be size_t 67920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ProtocolArrayTy, 68020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 68120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 68220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (const std::string *iter = Protocols.begin(), *endIter = Protocols.end(); 68320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter != endIter ; iter++) { 684f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::Constant *protocol = ExistingProtocols[*iter]; 685f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian if (!protocol) 686f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian protocol = GenerateEmptyProtocol(*iter); 6873c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::Constant *Ptr = llvm::ConstantExpr::getBitCast(protocol, 688a1cf15f4680e5cf39e72e28c5ea854fcba792e84Owen Anderson PtrToInt8Ty); 68920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(Ptr); 69020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 6917db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson llvm::Constant * ProtocolArray = llvm::ConstantArray::get(ProtocolArrayTy, 69220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements); 69320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 69420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 6954a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Elements.push_back(llvm::ConstantInt::get(LongTy, Protocols.size())); 69620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ProtocolArray); 69720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ProtocolListTy, Elements, ".objc_protocol_list"); 69820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 69920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 70045d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbarllvm::Value *CGObjCGNU::GenerateProtocolRef(CGBuilderTy &Builder, 701af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar const ObjCProtocolDecl *PD) { 702f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::Value *protocol = ExistingProtocols[PD->getNameAsString()]; 703f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian const llvm::Type *T = 704f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian CGM.getTypes().ConvertType(CGM.getContext().getObjCProtoType()); 70596e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson return Builder.CreateBitCast(protocol, llvm::PointerType::getUnqual(T)); 706f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian} 707f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian 708f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanianllvm::Constant *CGObjCGNU::GenerateEmptyProtocol( 709f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian const std::string &ProtocolName) { 710f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::SmallVector<std::string, 0> EmptyStringVector; 711f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::SmallVector<llvm::Constant*, 0> EmptyConstantVector; 712f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian 713f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::Constant *ProtocolList = GenerateProtocolList(EmptyStringVector); 714f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::Constant *InstanceMethodList = 715f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian GenerateProtocolMethodList(EmptyConstantVector, EmptyConstantVector); 716f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::Constant *ClassMethodList = 717f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian GenerateProtocolMethodList(EmptyConstantVector, EmptyConstantVector); 718f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian // Protocols are objects containing lists of the methods implemented and 719f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian // protocols adopted. 72047a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType *ProtocolTy = llvm::StructType::get(VMContext, IdTy, 721f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian PtrToInt8Ty, 722f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian ProtocolList->getType(), 723f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian InstanceMethodList->getType(), 724f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian ClassMethodList->getType(), 725f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian NULL); 726f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian std::vector<llvm::Constant*> Elements; 727f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian // The isa pointer must be set to a magic number so the runtime knows it's 728f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian // the correct layout. 7293c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getIntToPtr( 7300032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::ConstantInt::get(llvm::Type::getInt32Ty(VMContext), ProtocolVersion), IdTy)); 731f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian Elements.push_back(MakeConstantString(ProtocolName, ".objc_protocol_name")); 732f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian Elements.push_back(ProtocolList); 733f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian Elements.push_back(InstanceMethodList); 734f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian Elements.push_back(ClassMethodList); 735f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian return MakeGlobal(ProtocolTy, Elements, ".objc_protocol"); 73620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 73720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 738af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbarvoid CGObjCGNU::GenerateProtocol(const ObjCProtocolDecl *PD) { 739af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar ASTContext &Context = CGM.getContext(); 7408ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string ProtocolName = PD->getNameAsString(); 741af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar llvm::SmallVector<std::string, 16> Protocols; 742af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar for (ObjCProtocolDecl::protocol_iterator PI = PD->protocol_begin(), 743af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar E = PD->protocol_end(); PI != E; ++PI) 744d9d22dd9c94618490dbffb0e2caf222530ca39d3Chris Lattner Protocols.push_back((*PI)->getNameAsString()); 745af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> InstanceMethodNames; 746af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> InstanceMethodTypes; 74717945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis for (ObjCProtocolDecl::instmeth_iterator iter = PD->instmeth_begin(), 74817945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis E = PD->instmeth_end(); iter != E; iter++) { 749af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar std::string TypeStr; 750af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar Context.getObjCEncodingForMethodDecl(*iter, TypeStr); 751af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar InstanceMethodNames.push_back( 7528a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall MakeConstantString((*iter)->getSelector().getAsString())); 7538a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall InstanceMethodTypes.push_back(MakeConstantString(TypeStr)); 754af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar } 755af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar // Collect information about class methods: 756af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> ClassMethodNames; 757af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> ClassMethodTypes; 7586ab3524f72a6e64aa04973fa9433b5559abb3525Douglas Gregor for (ObjCProtocolDecl::classmeth_iterator 75917945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = PD->classmeth_begin(), endIter = PD->classmeth_end(); 76017945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter != endIter ; iter++) { 761af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar std::string TypeStr; 762af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar Context.getObjCEncodingForMethodDecl((*iter),TypeStr); 763af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar ClassMethodNames.push_back( 7648a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall MakeConstantString((*iter)->getSelector().getAsString())); 7658a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall ClassMethodTypes.push_back(MakeConstantString(TypeStr)); 766af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar } 76720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 76820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ProtocolList = GenerateProtocolList(Protocols); 76920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *InstanceMethodList = 77020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov GenerateProtocolMethodList(InstanceMethodNames, InstanceMethodTypes); 77120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ClassMethodList = 77220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov GenerateProtocolMethodList(ClassMethodNames, ClassMethodTypes); 77320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Protocols are objects containing lists of the methods implemented and 77420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // protocols adopted. 77547a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType *ProtocolTy = llvm::StructType::get(VMContext, IdTy, 77620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 77720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ProtocolList->getType(), 77820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov InstanceMethodList->getType(), 77920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ClassMethodList->getType(), 78020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 78120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 78220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // The isa pointer must be set to a magic number so the runtime knows it's 78320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // the correct layout. 7843c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getIntToPtr( 7850032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::ConstantInt::get(llvm::Type::getInt32Ty(VMContext), ProtocolVersion), IdTy)); 78620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(MakeConstantString(ProtocolName, ".objc_protocol_name")); 78720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ProtocolList); 78820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(InstanceMethodList); 78920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ClassMethodList); 79020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ExistingProtocols[ProtocolName] = 7913c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::ConstantExpr::getBitCast(MakeGlobal(ProtocolTy, Elements, 79220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ".objc_protocol"), IdTy); 79320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 79420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 7957ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbarvoid CGObjCGNU::GenerateCategory(const ObjCCategoryImplDecl *OCD) { 7968ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string ClassName = OCD->getClassInterface()->getNameAsString(); 7978ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string CategoryName = OCD->getNameAsString(); 7987ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about instance methods 7997ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<Selector, 16> InstanceMethodSels; 8007ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> InstanceMethodTypes; 801653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor for (ObjCCategoryImplDecl::instmeth_iterator 80217945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = OCD->instmeth_begin(), endIter = OCD->instmeth_end(); 803653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter != endIter ; iter++) { 8047ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar InstanceMethodSels.push_back((*iter)->getSelector()); 8057ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 8067ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar CGM.getContext().getObjCEncodingForMethodDecl(*iter,TypeStr); 8078a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall InstanceMethodTypes.push_back(MakeConstantString(TypeStr)); 8087ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 8097ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 8107ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about class methods 8117ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<Selector, 16> ClassMethodSels; 8127ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> ClassMethodTypes; 813653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor for (ObjCCategoryImplDecl::classmeth_iterator 81417945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = OCD->classmeth_begin(), endIter = OCD->classmeth_end(); 815653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter != endIter ; iter++) { 8167ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar ClassMethodSels.push_back((*iter)->getSelector()); 8177ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 8187ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar CGM.getContext().getObjCEncodingForMethodDecl(*iter,TypeStr); 8198a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall ClassMethodTypes.push_back(MakeConstantString(TypeStr)); 8207ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 8217ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 8227ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect the names of referenced protocols 8237ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<std::string, 16> Protocols; 8247ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar const ObjCInterfaceDecl *ClassDecl = OCD->getClassInterface(); 8257ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar const ObjCList<ObjCProtocolDecl> &Protos =ClassDecl->getReferencedProtocols(); 8267ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar for (ObjCList<ObjCProtocolDecl>::iterator I = Protos.begin(), 8277ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar E = Protos.end(); I != E; ++I) 828d9d22dd9c94618490dbffb0e2caf222530ca39d3Chris Lattner Protocols.push_back((*I)->getNameAsString()); 8297ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 83020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 83120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(MakeConstantString(CategoryName)); 83220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(MakeConstantString(ClassName)); 83320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Instance method list 8343c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getBitCast(GenerateMethodList( 835a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner ClassName, CategoryName, InstanceMethodSels, InstanceMethodTypes, 83620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov false), PtrTy)); 83720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Class method list 8383c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getBitCast(GenerateMethodList( 839a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner ClassName, CategoryName, ClassMethodSels, ClassMethodTypes, true), 84020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy)); 84120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Protocol list 8423c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getBitCast( 84320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov GenerateProtocolList(Protocols), PtrTy)); 8443c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Categories.push_back(llvm::ConstantExpr::getBitCast( 84547a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson MakeGlobal(llvm::StructType::get(VMContext, PtrToInt8Ty, PtrToInt8Ty, 84647a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson PtrTy, PtrTy, PtrTy, NULL), Elements), PtrTy)); 84720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 8487ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 8497ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbarvoid CGObjCGNU::GenerateClass(const ObjCImplementationDecl *OID) { 8507ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar ASTContext &Context = CGM.getContext(); 8517ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 8527ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Get the superclass name. 8537ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar const ObjCInterfaceDecl * SuperClassDecl = 8547ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar OID->getClassInterface()->getSuperClass(); 8558ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string SuperClassName; 8562a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner if (SuperClassDecl) { 8578ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner SuperClassName = SuperClassDecl->getNameAsString(); 8582a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner EmitClassRef(SuperClassName); 8592a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner } 8607ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 8617ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Get the class name 86209dc6660487fc2f4a4bb2032e30123d3e0da7230Chris Lattner ObjCInterfaceDecl *ClassDecl = 86309dc6660487fc2f4a4bb2032e30123d3e0da7230Chris Lattner const_cast<ObjCInterfaceDecl *>(OID->getClassInterface()); 8648ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string ClassName = ClassDecl->getNameAsString(); 8652a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner // Emit the symbol that is used to generate linker errors if this class is 8662a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner // referenced in other modules but not declared. 867c51db23f58bd887b16cf91554aa86c430a2496e7Fariborz Jahanian std::string classSymbolName = "__objc_class_name_" + ClassName; 868c51db23f58bd887b16cf91554aa86c430a2496e7Fariborz Jahanian if (llvm::GlobalVariable *symbol = 869c51db23f58bd887b16cf91554aa86c430a2496e7Fariborz Jahanian TheModule.getGlobalVariable(classSymbolName)) { 8704a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson symbol->setInitializer(llvm::ConstantInt::get(LongTy, 0)); 871c51db23f58bd887b16cf91554aa86c430a2496e7Fariborz Jahanian } else { 8721c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson new llvm::GlobalVariable(TheModule, LongTy, false, 8734a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson llvm::GlobalValue::ExternalLinkage, llvm::ConstantInt::get(LongTy, 0), 8741c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson classSymbolName); 875c51db23f58bd887b16cf91554aa86c430a2496e7Fariborz Jahanian } 8762a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner 8772bebbf0acee55404de4b8846713b64429e744e8fDaniel Dunbar // Get the size of instances. 8782bebbf0acee55404de4b8846713b64429e744e8fDaniel Dunbar int instanceSize = Context.getASTObjCImplementationLayout(OID).getSize() / 8; 8797ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 8807ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about instance variables. 8817ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> IvarNames; 8827ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> IvarTypes; 8837ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> IvarOffsets; 8849cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian 8859cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian int superInstanceSize = !SuperClassDecl ? 0 : 8869cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian Context.getASTObjCInterfaceLayout(SuperClassDecl).getSize() / 8; 8879cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // For non-fragile ivars, set the instance size to 0 - {the size of just this 8889cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // class}. The runtime will then set this to the correct value on load. 8899cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian if (CGM.getContext().getLangOptions().ObjCNonFragileABI) { 8909cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian instanceSize = 0 - (instanceSize - superInstanceSize); 8919cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 8927ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar for (ObjCInterfaceDecl::ivar_iterator iter = ClassDecl->ivar_begin(), 8937ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar endIter = ClassDecl->ivar_end() ; iter != endIter ; iter++) { 8947ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Store the name 8958a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall IvarNames.push_back(MakeConstantString((*iter)->getNameAsString())); 8967ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Get the type encoding for this ivar 8977ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 8980d504c1da852e58ff802545c823ecff3b6c654b8Daniel Dunbar Context.getObjCEncodingForType((*iter)->getType(), TypeStr); 8998a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall IvarTypes.push_back(MakeConstantString(TypeStr)); 9007ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Get the offset 9019cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian uint64_t Offset; 9029cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian if (CGM.getContext().getLangOptions().ObjCNonFragileABI) { 9038a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall Offset = ComputeIvarBaseOffset(CGM, ClassDecl, *iter) - 9048a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall superInstanceSize; 9059cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } else { 9069cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian Offset = ComputeIvarBaseOffset(CGM, ClassDecl, *iter); 9079cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 9087ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar IvarOffsets.push_back( 9090032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::ConstantInt::get(llvm::Type::getInt32Ty(VMContext), Offset)); 9107ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 9117ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 9127ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about instance methods 9137ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<Selector, 16> InstanceMethodSels; 9147ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> InstanceMethodTypes; 915653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor for (ObjCImplementationDecl::instmeth_iterator 91617945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = OID->instmeth_begin(), endIter = OID->instmeth_end(); 917653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter != endIter ; iter++) { 9187ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar InstanceMethodSels.push_back((*iter)->getSelector()); 9197ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 9207ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar Context.getObjCEncodingForMethodDecl((*iter),TypeStr); 9218a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall InstanceMethodTypes.push_back(MakeConstantString(TypeStr)); 9227ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 9231e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian for (ObjCImplDecl::propimpl_iterator 92417945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = OID->propimpl_begin(), endIter = OID->propimpl_end(); 9251e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian iter != endIter ; iter++) { 9261e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian ObjCPropertyDecl *property = (*iter)->getPropertyDecl(); 9271e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian if (ObjCMethodDecl *getter = property->getGetterMethodDecl()) { 9281e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian InstanceMethodSels.push_back(getter->getSelector()); 9291e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian std::string TypeStr; 9301e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian Context.getObjCEncodingForMethodDecl(getter,TypeStr); 9318a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall InstanceMethodTypes.push_back(MakeConstantString(TypeStr)); 9321e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian } 9331e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian if (ObjCMethodDecl *setter = property->getSetterMethodDecl()) { 9341e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian InstanceMethodSels.push_back(setter->getSelector()); 9351e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian std::string TypeStr; 9361e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian Context.getObjCEncodingForMethodDecl(setter,TypeStr); 9378a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall InstanceMethodTypes.push_back(MakeConstantString(TypeStr)); 9381e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian } 9391e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian } 9407ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 9417ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about class methods 9427ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<Selector, 16> ClassMethodSels; 9437ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> ClassMethodTypes; 944653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor for (ObjCImplementationDecl::classmeth_iterator 94517945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = OID->classmeth_begin(), endIter = OID->classmeth_end(); 946653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter != endIter ; iter++) { 9477ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar ClassMethodSels.push_back((*iter)->getSelector()); 9487ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 9497ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar Context.getObjCEncodingForMethodDecl((*iter),TypeStr); 9508a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall ClassMethodTypes.push_back(MakeConstantString(TypeStr)); 9517ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 9527ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect the names of referenced protocols 9537ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<std::string, 16> Protocols; 9547ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar const ObjCList<ObjCProtocolDecl> &Protos =ClassDecl->getReferencedProtocols(); 9557ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar for (ObjCList<ObjCProtocolDecl>::iterator I = Protos.begin(), 9567ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar E = Protos.end(); I != E; ++I) 957d9d22dd9c94618490dbffb0e2caf222530ca39d3Chris Lattner Protocols.push_back((*I)->getNameAsString()); 9587ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 9597ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 9607ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 96120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Get the superclass pointer. 96220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SuperClass; 9638ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner if (!SuperClassName.empty()) { 96420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov SuperClass = MakeConstantString(SuperClassName, ".super_class_name"); 96520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } else { 96603e205031b08669f05c41eed5b896fc94c4a12bbOwen Anderson SuperClass = llvm::ConstantPointerNull::get(PtrToInt8Ty); 96720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 96820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Empty vector used to construct empty method lists 96920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::SmallVector<llvm::Constant*, 1> empty; 97020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Generate the method and instance variable lists 97120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MethodList = GenerateMethodList(ClassName, "", 972a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner InstanceMethodSels, InstanceMethodTypes, false); 97320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ClassMethodList = GenerateMethodList(ClassName, "", 974a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner ClassMethodSels, ClassMethodTypes, true); 97520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *IvarList = GenerateIvarList(IvarNames, IvarTypes, 97620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IvarOffsets); 9778a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // Irrespective of whether we are compiling for a fragile or non-fragile ABI, 9788a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // we emit a symbol containing the offset for each ivar in the class. This 9798a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // allows code compiled for the non-Fragile ABI to inherit from code compiled 9808a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // for the legacy ABI, without causing problems. The converse is also 9818a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // possible, but causes all ivar accesses to be fragile. 9828a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall int i = 0; 9838a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // Offset pointer for getting at the correct field in the ivar list when 9848a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // setting up the alias. These are: The base address for the global, the 9858a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // ivar array (second field), the ivar in this list (set for each ivar), and 9868a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // the offset (third field in ivar structure) 9878a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall const llvm::Type *IndexTy = llvm::Type::getInt32Ty(VMContext); 9888a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::Constant *offsetPointerIndexes[] = {Zeros[0], 9898a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::ConstantInt::get(IndexTy, 1), 0, 9908a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::ConstantInt::get(IndexTy, 2) }; 9918a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall 9928a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall for (ObjCInterfaceDecl::ivar_iterator iter = ClassDecl->ivar_begin(), 9938a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall endIter = ClassDecl->ivar_end() ; iter != endIter ; iter++) { 9948a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall const std::string Name = "__objc_ivar_offset_" + ClassName + '.' 9958a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall +(*iter)->getNameAsString(); 9968a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall offsetPointerIndexes[2] = llvm::ConstantInt::get(IndexTy, i++); 9978a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // Get the correct ivar field 9988a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::Constant *offsetValue = llvm::ConstantExpr::getGetElementPtr( 9998a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall IvarList, offsetPointerIndexes, 4); 10008a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // Get the existing alias, if one exists. 10018a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::GlobalVariable *offset = TheModule.getNamedGlobal(Name); 10028a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall if (offset) { 10038a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall offset->setInitializer(offsetValue); 10048a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // If this is the real definition, change its linkage type so that 10058a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // different modules will use this one, rather than their private 10068a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // copy. 10078a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall offset->setLinkage(llvm::GlobalValue::ExternalLinkage); 10088a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall } else { 10098a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // Add a new alias if there isn't one already. 10108a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall offset = new llvm::GlobalVariable(TheModule, offsetValue->getType(), 10118a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall false, llvm::GlobalValue::ExternalLinkage, offsetValue, Name); 10128a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall } 10138a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall } 101420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov //Generate metaclass for class methods 101520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MetaClassStruct = GenerateClassStructure(NULLPtr, 10161565e0364b05d163640dd2b6feed43bae67df4fdChris Lattner NULLPtr, 0x2L, /*name*/"", 0, Zeros[0], GenerateIvarList( 101720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov empty, empty, empty), ClassMethodList, NULLPtr); 10185efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar 101920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Generate the class structure 10208ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner llvm::Constant *ClassStruct = 10218ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner GenerateClassStructure(MetaClassStruct, SuperClass, 0x1L, 10228ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner ClassName.c_str(), 0, 10234a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson llvm::ConstantInt::get(LongTy, instanceSize), IvarList, 102420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov MethodList, GenerateProtocolList(Protocols)); 10255efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar 10265efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar // Resolve the class aliases, if they exist. 10275efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar if (ClassPtrAlias) { 10285efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar ClassPtrAlias->setAliasee( 10293c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::ConstantExpr::getBitCast(ClassStruct, IdTy)); 10305efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar ClassPtrAlias = 0; 10315efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } 10325efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar if (MetaClassPtrAlias) { 10335efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar MetaClassPtrAlias->setAliasee( 10343c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::ConstantExpr::getBitCast(MetaClassStruct, IdTy)); 10355efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar MetaClassPtrAlias = 0; 10365efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } 10375efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar 103820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Add class structure to list to be added to the symtab later 10393c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson ClassStruct = llvm::ConstantExpr::getBitCast(ClassStruct, PtrToInt8Ty); 104020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.push_back(ClassStruct); 104120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 104220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 1043c38e9affd4519ea199af22419c8c794973cc4b23Fariborz Jahanian 104420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Function *CGObjCGNU::ModuleInitFunction() { 104520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Only emit an ObjC load function if no Objective-C stuff has been called 104620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov if (Classes.empty() && Categories.empty() && ConstantStrings.empty() && 104720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ExistingProtocols.empty() && TypedSelectors.empty() && 10485f58b911304f7d114f929d1726a09cd1c828a5ddAnton Korobeynikov UntypedSelectors.empty()) 104920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return NULL; 10501b8956e1ce4c5770982d6e59edb16979b500677aEli Friedman 1051e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::StructType *SelStructTy = dyn_cast<llvm::StructType>( 1052e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner SelectorTy->getElementType()); 1053e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::Type *SelStructPtrTy = SelectorTy; 1054e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner bool isSelOpaque = false; 1055e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner if (SelStructTy == 0) { 105647a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson SelStructTy = llvm::StructType::get(VMContext, PtrToInt8Ty, 105747a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson PtrToInt8Ty, NULL); 105896e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson SelStructPtrTy = llvm::PointerType::getUnqual(SelStructTy); 1059e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner isSelOpaque = true; 1060e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner } 1061e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner 10621b8956e1ce4c5770982d6e59edb16979b500677aEli Friedman // Name the ObjC types to make the IR a bit easier to read 1063e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner TheModule.addTypeName(".objc_selector", SelStructPtrTy); 10641b8956e1ce4c5770982d6e59edb16979b500677aEli Friedman TheModule.addTypeName(".objc_id", IdTy); 10651b8956e1ce4c5770982d6e59edb16979b500677aEli Friedman TheModule.addTypeName(".objc_imp", IMPTy); 10661b8956e1ce4c5770982d6e59edb16979b500677aEli Friedman 106720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 106871238f67c5df13eef19450d66b7a7ab28377192aChris Lattner llvm::Constant *Statics = NULLPtr; 106920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Generate statics list: 107071238f67c5df13eef19450d66b7a7ab28377192aChris Lattner if (ConstantStrings.size()) { 107196e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *StaticsArrayTy = llvm::ArrayType::get(PtrToInt8Ty, 107271238f67c5df13eef19450d66b7a7ab28377192aChris Lattner ConstantStrings.size() + 1); 107371238f67c5df13eef19450d66b7a7ab28377192aChris Lattner ConstantStrings.push_back(NULLPtr); 10748a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall 10758a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall const char *StringClass = CGM.getLangOptions().ObjCConstantStringClass; 10768a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall if (!StringClass) StringClass = "NXConstantString"; 10778a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall Elements.push_back(MakeConstantString(StringClass, 10788a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall ".objc_static_class_name")); 10797db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson Elements.push_back(llvm::ConstantArray::get(StaticsArrayTy, 108071238f67c5df13eef19450d66b7a7ab28377192aChris Lattner ConstantStrings)); 108171238f67c5df13eef19450d66b7a7ab28377192aChris Lattner llvm::StructType *StaticsListTy = 108247a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType::get(VMContext, PtrToInt8Ty, StaticsArrayTy, NULL); 1083a1cf15f4680e5cf39e72e28c5ea854fcba792e84Owen Anderson llvm::Type *StaticsListPtrTy = 108496e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(StaticsListTy); 108571238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Statics = MakeGlobal(StaticsListTy, Elements, ".objc_statics"); 1086a1cf15f4680e5cf39e72e28c5ea854fcba792e84Owen Anderson llvm::ArrayType *StaticsListArrayTy = 108796e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType::get(StaticsListPtrTy, 2); 108871238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Elements.clear(); 108971238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Elements.push_back(Statics); 1090c9c88b4159791c48e486ca94e3743b5979e2b7a6Owen Anderson Elements.push_back(llvm::Constant::getNullValue(StaticsListPtrTy)); 109171238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Statics = MakeGlobal(StaticsListArrayTy, Elements, ".objc_statics_ptr"); 10923c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Statics = llvm::ConstantExpr::getBitCast(Statics, PtrTy); 109371238f67c5df13eef19450d66b7a7ab28377192aChris Lattner } 109420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Array of classes, categories, and constant objects 109596e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *ClassListTy = llvm::ArrayType::get(PtrToInt8Ty, 109620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.size() + Categories.size() + 2); 109747a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType *SymTabTy = llvm::StructType::get(VMContext, 109847a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson LongTy, SelStructPtrTy, 10990032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::Type::getInt16Ty(VMContext), 11000032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::Type::getInt16Ty(VMContext), 1101630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner ClassListTy, NULL); 110220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 110320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 110420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Pointer to an array of selectors used in this module. 110520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Selectors; 110620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (std::map<TypedSelector, llvm::GlobalAlias*>::iterator 110720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter = TypedSelectors.begin(), iterEnd = TypedSelectors.end(); 110820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter != iterEnd ; ++iter) { 1109630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner Elements.push_back(MakeConstantString(iter->first.first, ".objc_sel_name")); 1110630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner Elements.push_back(MakeConstantString(iter->first.second, 1111630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner ".objc_sel_types")); 111208e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson Selectors.push_back(llvm::ConstantStruct::get(SelStructTy, Elements)); 111320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 111420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 111520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (llvm::StringMap<llvm::GlobalAlias*>::iterator 111620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter = UntypedSelectors.begin(), iterEnd = UntypedSelectors.end(); 1117630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner iter != iterEnd; ++iter) { 111820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back( 1119630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner MakeConstantString(iter->getKeyData(), ".objc_sel_name")); 112020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 112108e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson Selectors.push_back(llvm::ConstantStruct::get(SelStructTy, Elements)); 112220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 112320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 112420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 112520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 112608e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson Selectors.push_back(llvm::ConstantStruct::get(SelStructTy, Elements)); 112720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 112820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Number of static selectors 11294a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Elements.push_back(llvm::ConstantInt::get(LongTy, Selectors.size() )); 113020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SelectorList = MakeGlobal( 113196e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType::get(SelStructTy, Selectors.size()), Selectors, 113220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ".objc_selector_list"); 11333c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getBitCast(SelectorList, 1134e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner SelStructPtrTy)); 113520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 113620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Now that all of the static selectors exist, create pointers to them. 113720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov int index = 0; 113820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (std::map<TypedSelector, llvm::GlobalAlias*>::iterator 113920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter=TypedSelectors.begin(), iterEnd =TypedSelectors.end(); 114020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter != iterEnd; ++iter) { 114120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Idxs[] = {Zeros[0], 11420032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::ConstantInt::get(llvm::Type::getInt32Ty(VMContext), index++), Zeros[0]}; 11431c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson llvm::Constant *SelPtr = new llvm::GlobalVariable(TheModule, SelStructPtrTy, 11441c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson true, llvm::GlobalValue::InternalLinkage, 11453c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::ConstantExpr::getGetElementPtr(SelectorList, Idxs, 2), 11461c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson ".objc_sel_ptr"); 1147e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner // If selectors are defined as an opaque type, cast the pointer to this 1148e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner // type. 1149e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner if (isSelOpaque) { 11503c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson SelPtr = llvm::ConstantExpr::getBitCast(SelPtr, 115196e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(SelectorTy)); 1152e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner } 115320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov (*iter).second->setAliasee(SelPtr); 115420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 115520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (llvm::StringMap<llvm::GlobalAlias*>::iterator 115620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter=UntypedSelectors.begin(), iterEnd = UntypedSelectors.end(); 115720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter != iterEnd; iter++) { 115820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Idxs[] = {Zeros[0], 11590032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::ConstantInt::get(llvm::Type::getInt32Ty(VMContext), index++), Zeros[0]}; 1160bb1c8600218b3244340331165fc7cba7bf227655Mike Stump llvm::Constant *SelPtr = new llvm::GlobalVariable 1161bb1c8600218b3244340331165fc7cba7bf227655Mike Stump (TheModule, SelStructPtrTy, 1162bb1c8600218b3244340331165fc7cba7bf227655Mike Stump true, llvm::GlobalValue::InternalLinkage, 1163bb1c8600218b3244340331165fc7cba7bf227655Mike Stump llvm::ConstantExpr::getGetElementPtr(SelectorList, Idxs, 2), 1164bb1c8600218b3244340331165fc7cba7bf227655Mike Stump ".objc_sel_ptr"); 1165e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner // If selectors are defined as an opaque type, cast the pointer to this 1166e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner // type. 1167e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner if (isSelOpaque) { 11683c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson SelPtr = llvm::ConstantExpr::getBitCast(SelPtr, 116996e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(SelectorTy)); 1170e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner } 117120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov (*iter).second->setAliasee(SelPtr); 117220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 117320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Number of classes defined. 11740032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson Elements.push_back(llvm::ConstantInt::get(llvm::Type::getInt16Ty(VMContext), 117520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.size())); 117620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Number of categories defined 11770032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson Elements.push_back(llvm::ConstantInt::get(llvm::Type::getInt16Ty(VMContext), 117820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Categories.size())); 117920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an array of classes, then categories, then static object instances 118020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.insert(Classes.end(), Categories.begin(), Categories.end()); 118120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // NULL-terminated list of static object instances (mainly constant strings) 118220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.push_back(Statics); 118320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.push_back(NULLPtr); 11847db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson llvm::Constant *ClassList = llvm::ConstantArray::get(ClassListTy, Classes); 118520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ClassList); 118620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Construct the symbol table 118720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SymTab= MakeGlobal(SymTabTy, Elements); 118820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 118920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // The symbol table is contained in a module which has some version-checking 119020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // constants 119147a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType * ModuleTy = llvm::StructType::get(VMContext, LongTy, LongTy, 119296e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson PtrToInt8Ty, llvm::PointerType::getUnqual(SymTabTy), NULL); 119320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 119420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Runtime version used for compatibility checking. 11959cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian if (CGM.getContext().getLangOptions().ObjCNonFragileABI) { 11964a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Elements.push_back(llvm::ConstantInt::get(LongTy, 11979cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian NonFragileRuntimeVersion)); 11989cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } else { 11994a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Elements.push_back(llvm::ConstantInt::get(LongTy, RuntimeVersion)); 12009cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 120191a0b51438e5259a79d68d7450c453827beed9e2Fariborz Jahanian // sizeof(ModuleTy) 120291a0b51438e5259a79d68d7450c453827beed9e2Fariborz Jahanian llvm::TargetData td = llvm::TargetData::TargetData(&TheModule); 12034a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Elements.push_back(llvm::ConstantInt::get(LongTy, 1204a1cf15f4680e5cf39e72e28c5ea854fcba792e84Owen Anderson td.getTypeSizeInBits(ModuleTy)/8)); 120520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov //FIXME: Should be the path to the file where this module was declared 120620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 120720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(SymTab); 120820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Value *Module = MakeGlobal(ModuleTy, Elements); 120920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 121020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create the load function calling the runtime entry point with the module 121120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // structure 121220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Function * LoadFunction = llvm::Function::Create( 12130032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::FunctionType::get(llvm::Type::getVoidTy(VMContext), false), 121420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::GlobalValue::InternalLinkage, ".objc_load_function", 121520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov &TheModule); 12160032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::BasicBlock *EntryBB = 12170032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::BasicBlock::Create(VMContext, "entry", LoadFunction); 1218a1cf15f4680e5cf39e72e28c5ea854fcba792e84Owen Anderson CGBuilderTy Builder(VMContext); 121920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Builder.SetInsertPoint(EntryBB); 122026c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian 122126c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian std::vector<const llvm::Type*> Params(1, 122296e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(ModuleTy)); 122396e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::Value *Register = CGM.CreateRuntimeFunction(llvm::FunctionType::get( 12240032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::Type::getVoidTy(VMContext), Params, true), "__objc_exec_class"); 122520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Builder.CreateCall(Register, Module); 122620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Builder.CreateRetVoid(); 12279cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian 122820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return LoadFunction; 122920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 12307ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 1231679a502d462ef819e6175b58e255ca3f3391e7cfFariborz Jahanianllvm::Function *CGObjCGNU::GenerateMethod(const ObjCMethodDecl *OMD, 1232679a502d462ef819e6175b58e255ca3f3391e7cfFariborz Jahanian const ObjCContainerDecl *CD) { 12337ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar const ObjCCategoryImplDecl *OCD = 12343e0a540b6d846178857289ec0eb8470a278d11a3Steve Naroff dyn_cast<ObjCCategoryImplDecl>(OMD->getDeclContext()); 1235077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner std::string CategoryName = OCD ? OCD->getNameAsString() : ""; 1236077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner std::string ClassName = OMD->getClassInterface()->getNameAsString(); 1237077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner std::string MethodName = OMD->getSelector().getAsString(); 1238f8d49f64ef6ab7e632717a31631fc289aab69428Douglas Gregor bool isClassMethod = !OMD->isInstanceMethod(); 1239391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner 1240541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel Dunbar CodeGenTypes &Types = CGM.getTypes(); 124145c25ba11cbf8c9a461def5b03f6ee9481e06769Daniel Dunbar const llvm::FunctionType *MethodTy = 1242541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel Dunbar Types.GetFunctionType(Types.getFunctionInfo(OMD), OMD->isVariadic()); 124320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::string FunctionName = SymbolNameForMethod(ClassName, CategoryName, 124420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov MethodName, isClassMethod); 124520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 1246984d0b414bc76d3530b9bc55a5a55834ba76c607Gabor Greif llvm::Function *Method = llvm::Function::Create(MethodTy, 1247391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner llvm::GlobalValue::InternalLinkage, 124820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov FunctionName, 1249391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner &TheModule); 1250391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner return Method; 1251391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner} 1252391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner 125349f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbarllvm::Function *CGObjCGNU::GetPropertyGetFunction() { 1254cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian std::vector<const llvm::Type*> Params; 1255cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian const llvm::Type *BoolTy = 1256cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian CGM.getTypes().ConvertType(CGM.getContext().BoolTy); 1257cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian Params.push_back(IdTy); 1258cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian Params.push_back(SelectorTy); 1259cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian // FIXME: Using LongTy for ptrdiff_t is probably broken on Win64 1260cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian Params.push_back(LongTy); 1261cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian Params.push_back(BoolTy); 1262cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian // void objc_getProperty (id, SEL, ptrdiff_t, bool) 1263cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian const llvm::FunctionType *FTy = 126496e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::FunctionType::get(IdTy, Params, false); 1265cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian return cast<llvm::Function>(CGM.CreateRuntimeFunction(FTy, 1266cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian "objc_getProperty")); 126749f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar} 126849f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar 126949f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbarllvm::Function *CGObjCGNU::GetPropertySetFunction() { 1270cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian std::vector<const llvm::Type*> Params; 1271cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian const llvm::Type *BoolTy = 1272cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian CGM.getTypes().ConvertType(CGM.getContext().BoolTy); 1273cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian Params.push_back(IdTy); 1274cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian Params.push_back(SelectorTy); 1275cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian // FIXME: Using LongTy for ptrdiff_t is probably broken on Win64 1276cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian Params.push_back(LongTy); 1277cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian Params.push_back(IdTy); 1278cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian Params.push_back(BoolTy); 1279cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian Params.push_back(BoolTy); 1280cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian // void objc_setProperty (id, SEL, ptrdiff_t, id, bool, bool) 1281cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian const llvm::FunctionType *FTy = 12820032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::FunctionType::get(llvm::Type::getVoidTy(VMContext), Params, false); 1283cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian return cast<llvm::Function>(CGM.CreateRuntimeFunction(FTy, 1284cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian "objc_setProperty")); 128549f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar} 128649f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar 1287309a4368cd299cff30ab22709e2b772cf8059e45Daniel Dunbarllvm::Constant *CGObjCGNU::EnumerationMutationFunction() { 1288309a4368cd299cff30ab22709e2b772cf8059e45Daniel Dunbar CodeGen::CodeGenTypes &Types = CGM.getTypes(); 1289309a4368cd299cff30ab22709e2b772cf8059e45Daniel Dunbar ASTContext &Ctx = CGM.getContext(); 1290309a4368cd299cff30ab22709e2b772cf8059e45Daniel Dunbar // void objc_enumerationMutation (id) 1291309a4368cd299cff30ab22709e2b772cf8059e45Daniel Dunbar llvm::SmallVector<QualType,16> Params; 12920f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall Params.push_back(ASTIdTy); 1293309a4368cd299cff30ab22709e2b772cf8059e45Daniel Dunbar const llvm::FunctionType *FTy = 1294309a4368cd299cff30ab22709e2b772cf8059e45Daniel Dunbar Types.GetFunctionType(Types.getFunctionInfo(Ctx.VoidTy, Params), false); 1295309a4368cd299cff30ab22709e2b772cf8059e45Daniel Dunbar return CGM.CreateRuntimeFunction(FTy, "objc_enumerationMutation"); 12962abd89c039e835e84519a4cd8a7495899a70153dAnders Carlsson} 12972abd89c039e835e84519a4cd8a7495899a70153dAnders Carlsson 1298bd71be4683c195260d5245118b1e13e6b2e20504Fariborz Jahanianvoid CGObjCGNU::EmitTryOrSynchronizedStmt(CodeGen::CodeGenFunction &CGF, 1299bd71be4683c195260d5245118b1e13e6b2e20504Fariborz Jahanian const Stmt &S) { 13005dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Pointer to the personality function 13015dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Constant *Personality = 13020032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson CGM.CreateRuntimeFunction(llvm::FunctionType::get(llvm::Type::getInt32Ty(VMContext), 1303b59761b2530bf54926bf67de11956f3820ac38d9Chris Lattner true), 13045dc0867af17b3bd6f567897433853b2b4767446cChris Lattner "__gnu_objc_personality_v0"); 13053c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Personality = llvm::ConstantExpr::getBitCast(Personality, PtrTy); 13065dc0867af17b3bd6f567897433853b2b4767446cChris Lattner std::vector<const llvm::Type*> Params; 13075dc0867af17b3bd6f567897433853b2b4767446cChris Lattner Params.push_back(PtrTy); 13085dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Value *RethrowFn = 13090032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson CGM.CreateRuntimeFunction(llvm::FunctionType::get(llvm::Type::getVoidTy(VMContext), 13105dc0867af17b3bd6f567897433853b2b4767446cChris Lattner Params, false), "_Unwind_Resume_or_Rethrow"); 13115dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 13125dc0867af17b3bd6f567897433853b2b4767446cChris Lattner bool isTry = isa<ObjCAtTryStmt>(S); 13135dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *TryBlock = CGF.createBasicBlock("try"); 13145dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *PrevLandingPad = CGF.getInvokeDest(); 13155dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *TryHandler = CGF.createBasicBlock("try.handler"); 1316d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner llvm::BasicBlock *CatchInCatch = CGF.createBasicBlock("catch.rethrow"); 13175dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *FinallyBlock = CGF.createBasicBlock("finally"); 13185dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *FinallyRethrow = CGF.createBasicBlock("finally.throw"); 13195dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *FinallyEnd = CGF.createBasicBlock("finally.end"); 13205dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 13215dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // GNU runtime does not currently support @synchronized() 13225dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (!isTry) { 1323d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner std::vector<const llvm::Type*> Args(1, IdTy); 1324d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner llvm::FunctionType *FTy = 13250032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::FunctionType::get(llvm::Type::getVoidTy(VMContext), Args, false); 1326d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner llvm::Value *SyncEnter = CGM.CreateRuntimeFunction(FTy, "objc_sync_enter"); 1327d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner llvm::Value *SyncArg = 1328d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.EmitScalarExpr(cast<ObjCAtSynchronizedStmt>(S).getSynchExpr()); 1329d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner SyncArg = CGF.Builder.CreateBitCast(SyncArg, IdTy); 1330d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.Builder.CreateCall(SyncEnter, SyncArg); 13315dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 13325dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 1333d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner 13345dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Push an EH context entry, used for handling rethrows and jumps 13355dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // through finally. 13365dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.PushCleanupBlock(FinallyBlock); 13375dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 13385dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Emit the statements in the @try {} block 13395dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.setInvokeDest(TryHandler); 13405dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 13415dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(TryBlock); 13425dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitStmt(isTry ? cast<ObjCAtTryStmt>(S).getTryBody() 13435dc0867af17b3bd6f567897433853b2b4767446cChris Lattner : cast<ObjCAtSynchronizedStmt>(S).getSynchBody()); 13445dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 13455dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Jump to @finally if there is no exception 13465dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBranchThroughCleanup(FinallyEnd); 13475dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 13485dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Emit the handlers 13495dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(TryHandler); 13505dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 1351bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner // Get the correct versions of the exception handling intrinsics 1352bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner llvm::TargetData td = llvm::TargetData::TargetData(&TheModule); 1353bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner int PointerWidth = td.getTypeSizeInBits(PtrTy); 1354bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner assert((PointerWidth == 32 || PointerWidth == 64) && 1355bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner "Can't yet handle exceptions if pointers are not 32 or 64 bits"); 13565dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Value *llvm_eh_exception = 13575dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.CGM.getIntrinsic(llvm::Intrinsic::eh_exception); 1358bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner llvm::Value *llvm_eh_selector = PointerWidth == 32 ? 1359bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner CGF.CGM.getIntrinsic(llvm::Intrinsic::eh_selector_i32) : 1360bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner CGF.CGM.getIntrinsic(llvm::Intrinsic::eh_selector_i64); 1361bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner llvm::Value *llvm_eh_typeid_for = PointerWidth == 32 ? 1362bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner CGF.CGM.getIntrinsic(llvm::Intrinsic::eh_typeid_for_i32) : 1363bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner CGF.CGM.getIntrinsic(llvm::Intrinsic::eh_typeid_for_i64); 13645dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 13655dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Exception object 13665dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Value *Exc = CGF.Builder.CreateCall(llvm_eh_exception, "exc"); 13675dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Value *RethrowPtr = CGF.CreateTempAlloca(Exc->getType(), "_rethrow"); 13685dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 13695dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::SmallVector<llvm::Value*, 8> ESelArgs; 13705dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::SmallVector<std::pair<const ParmVarDecl*, const Stmt*>, 8> Handlers; 13715dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 13725dc0867af17b3bd6f567897433853b2b4767446cChris Lattner ESelArgs.push_back(Exc); 13735dc0867af17b3bd6f567897433853b2b4767446cChris Lattner ESelArgs.push_back(Personality); 13745dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 13755dc0867af17b3bd6f567897433853b2b4767446cChris Lattner bool HasCatchAll = false; 13765dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Only @try blocks are allowed @catch blocks, but both can have @finally 13775dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (isTry) { 13785dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (const ObjCAtCatchStmt* CatchStmt = 13795dc0867af17b3bd6f567897433853b2b4767446cChris Lattner cast<ObjCAtTryStmt>(S).getCatchStmts()) { 1380d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.setInvokeDest(CatchInCatch); 13815dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 13825dc0867af17b3bd6f567897433853b2b4767446cChris Lattner for (; CatchStmt; CatchStmt = CatchStmt->getNextCatchStmt()) { 13835dc0867af17b3bd6f567897433853b2b4767446cChris Lattner const ParmVarDecl *CatchDecl = CatchStmt->getCatchParamDecl(); 1384bb1c8600218b3244340331165fc7cba7bf227655Mike Stump Handlers.push_back(std::make_pair(CatchDecl, 1385bb1c8600218b3244340331165fc7cba7bf227655Mike Stump CatchStmt->getCatchBody())); 13865dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 13875dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // @catch() and @catch(id) both catch any ObjC exception 138814108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff if (!CatchDecl || CatchDecl->getType()->isObjCIdType() 13895dc0867af17b3bd6f567897433853b2b4767446cChris Lattner || CatchDecl->getType()->isObjCQualifiedIdType()) { 13905dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Use i8* null here to signal this is a catch all, not a cleanup. 13915dc0867af17b3bd6f567897433853b2b4767446cChris Lattner ESelArgs.push_back(NULLPtr); 13925dc0867af17b3bd6f567897433853b2b4767446cChris Lattner HasCatchAll = true; 13935dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // No further catches after this one will ever by reached 13945dc0867af17b3bd6f567897433853b2b4767446cChris Lattner break; 13955dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 13965dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 13975dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // All other types should be Objective-C interface pointer types. 139814108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff const ObjCObjectPointerType *OPT = 139914108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff CatchDecl->getType()->getAsObjCObjectPointerType(); 140014108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff assert(OPT && "Invalid @catch type."); 14015dc0867af17b3bd6f567897433853b2b4767446cChris Lattner const ObjCInterfaceType *IT = 140214108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff OPT->getPointeeType()->getAsObjCInterfaceType(); 14035dc0867af17b3bd6f567897433853b2b4767446cChris Lattner assert(IT && "Invalid @catch type."); 1404bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner llvm::Value *EHType = 1405bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner MakeConstantString(IT->getDecl()->getNameAsString()); 14065dc0867af17b3bd6f567897433853b2b4767446cChris Lattner ESelArgs.push_back(EHType); 14075dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 14085dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 14095dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 14105dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 14115dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // We use a cleanup unless there was already a catch all. 14125dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (!HasCatchAll) { 14130032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson ESelArgs.push_back(llvm::ConstantInt::get(llvm::Type::getInt32Ty(VMContext), 0)); 14145dc0867af17b3bd6f567897433853b2b4767446cChris Lattner Handlers.push_back(std::make_pair((const ParmVarDecl*) 0, (const Stmt*) 0)); 14155dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 14165dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 14175dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Find which handler was matched. 1418bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner llvm::Value *ESelector = CGF.Builder.CreateCall(llvm_eh_selector, 14195dc0867af17b3bd6f567897433853b2b4767446cChris Lattner ESelArgs.begin(), ESelArgs.end(), "selector"); 14205dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 14215dc0867af17b3bd6f567897433853b2b4767446cChris Lattner for (unsigned i = 0, e = Handlers.size(); i != e; ++i) { 14225dc0867af17b3bd6f567897433853b2b4767446cChris Lattner const ParmVarDecl *CatchParam = Handlers[i].first; 14235dc0867af17b3bd6f567897433853b2b4767446cChris Lattner const Stmt *CatchBody = Handlers[i].second; 14245dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 14255dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *Next = 0; 14265dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 14275dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // The last handler always matches. 14285dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (i + 1 != e) { 14295dc0867af17b3bd6f567897433853b2b4767446cChris Lattner assert(CatchParam && "Only last handler can be a catch all."); 14305dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 14315dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Test whether this block matches the type for the selector and branch 14325dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // to Match if it does, or to the next BB if it doesn't. 14335dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *Match = CGF.createBasicBlock("match"); 14345dc0867af17b3bd6f567897433853b2b4767446cChris Lattner Next = CGF.createBasicBlock("catch.next"); 1435bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner llvm::Value *Id = CGF.Builder.CreateCall(llvm_eh_typeid_for, 14365dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateBitCast(ESelArgs[i+2], PtrTy)); 14375dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateCondBr(CGF.Builder.CreateICmpEQ(ESelector, Id), Match, 14385dc0867af17b3bd6f567897433853b2b4767446cChris Lattner Next); 14395dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 14405dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(Match); 14415dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 14425dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 14435dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (CatchBody) { 14445dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Value *ExcObject = CGF.Builder.CreateBitCast(Exc, 14455dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.ConvertType(CatchParam->getType())); 14465dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 14475dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Bind the catch parameter if it exists. 14485dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (CatchParam) { 14495dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // CatchParam is a ParmVarDecl because of the grammar 14505dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // construction used to handle this, but for codegen purposes 14515dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // we treat this as a local decl. 14525dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitLocalBlockVarDecl(*CatchParam); 14535dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateStore(ExcObject, CGF.GetAddrOfLocalVar(CatchParam)); 14545dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 14555dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 14565dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.ObjCEHValueStack.push_back(ExcObject); 14575dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitStmt(CatchBody); 14585dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.ObjCEHValueStack.pop_back(); 14595dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 14605dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBranchThroughCleanup(FinallyEnd); 14615dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 14625dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (Next) 14635dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(Next); 14645dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } else { 14655dc0867af17b3bd6f567897433853b2b4767446cChris Lattner assert(!Next && "catchup should be last handler."); 14665dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 14675dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateStore(Exc, RethrowPtr); 14685dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBranchThroughCleanup(FinallyRethrow); 14695dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 14705dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 1471d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner // The @finally block is a secondary landing pad for any exceptions thrown in 1472d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner // @catch() blocks 1473d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.EmitBlock(CatchInCatch); 1474d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner Exc = CGF.Builder.CreateCall(llvm_eh_exception, "exc"); 1475d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner ESelArgs.clear(); 1476d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner ESelArgs.push_back(Exc); 1477d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner ESelArgs.push_back(Personality); 14780032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson ESelArgs.push_back(llvm::ConstantInt::get(llvm::Type::getInt32Ty(VMContext), 0)); 1479d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.Builder.CreateCall(llvm_eh_selector, ESelArgs.begin(), ESelArgs.end(), 1480d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner "selector"); 1481d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.Builder.CreateCall(llvm_eh_typeid_for, 1482d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.Builder.CreateIntToPtr(ESelArgs[2], PtrTy)); 1483d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.Builder.CreateStore(Exc, RethrowPtr); 1484d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.EmitBranchThroughCleanup(FinallyRethrow); 1485d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner 14865dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CodeGenFunction::CleanupBlockInfo Info = CGF.PopCleanupBlock(); 14875dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 14885dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.setInvokeDest(PrevLandingPad); 14895dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 14905dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(FinallyBlock); 14915dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 1492d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner 14935dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (isTry) { 14945dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (const ObjCAtFinallyStmt* FinallyStmt = 14955dc0867af17b3bd6f567897433853b2b4767446cChris Lattner cast<ObjCAtTryStmt>(S).getFinallyStmt()) 14965dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitStmt(FinallyStmt->getFinallyBody()); 14975dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } else { 1498d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner // Emit 'objc_sync_exit(expr)' as finally's sole statement for 14995dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // @synchronized. 1500d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner std::vector<const llvm::Type*> Args(1, IdTy); 1501d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner llvm::FunctionType *FTy = 15020032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::FunctionType::get(llvm::Type::getVoidTy(VMContext), Args, false); 1503d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner llvm::Value *SyncExit = CGM.CreateRuntimeFunction(FTy, "objc_sync_exit"); 1504d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner llvm::Value *SyncArg = 1505d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.EmitScalarExpr(cast<ObjCAtSynchronizedStmt>(S).getSynchExpr()); 1506d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner SyncArg = CGF.Builder.CreateBitCast(SyncArg, IdTy); 1507d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.Builder.CreateCall(SyncExit, SyncArg); 15085dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 15095dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 15105dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (Info.SwitchBlock) 15115dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(Info.SwitchBlock); 15125dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (Info.EndBlock) 15135dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(Info.EndBlock); 15145dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 15155dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Branch around the rethrow code. 15165dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBranch(FinallyEnd); 15175dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 15185dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(FinallyRethrow); 15195dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateCall(RethrowFn, CGF.Builder.CreateLoad(RethrowPtr)); 15205dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateUnreachable(); 15215dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 15225dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(FinallyEnd); 15235dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 152464d5d6c5903157c521af496479d06dc26032d718Anders Carlsson} 152564d5d6c5903157c521af496479d06dc26032d718Anders Carlsson 152664d5d6c5903157c521af496479d06dc26032d718Anders Carlssonvoid CGObjCGNU::EmitThrowStmt(CodeGen::CodeGenFunction &CGF, 152749f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar const ObjCAtThrowStmt &S) { 15285dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Value *ExceptionAsObject; 15295dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 15305dc0867af17b3bd6f567897433853b2b4767446cChris Lattner std::vector<const llvm::Type*> Args(1, IdTy); 15315dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::FunctionType *FTy = 15320032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::FunctionType::get(llvm::Type::getVoidTy(VMContext), Args, false); 15335dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Value *ThrowFn = 15345dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGM.CreateRuntimeFunction(FTy, "objc_exception_throw"); 15355dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 15365dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (const Expr *ThrowExpr = S.getThrowExpr()) { 15375dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Value *Exception = CGF.EmitScalarExpr(ThrowExpr); 15381e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian ExceptionAsObject = Exception; 15395dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } else { 15405dc0867af17b3bd6f567897433853b2b4767446cChris Lattner assert((!CGF.ObjCEHValueStack.empty() && CGF.ObjCEHValueStack.back()) && 15415dc0867af17b3bd6f567897433853b2b4767446cChris Lattner "Unexpected rethrow outside @catch block."); 15425dc0867af17b3bd6f567897433853b2b4767446cChris Lattner ExceptionAsObject = CGF.ObjCEHValueStack.back(); 15435dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 15441e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian ExceptionAsObject = 15451e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian CGF.Builder.CreateBitCast(ExceptionAsObject, IdTy, "tmp"); 15465dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 15475dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Note: This may have to be an invoke, if we want to support constructs like: 15485dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // @try { 15495dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // @throw(obj); 15505dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // } 15515dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // @catch(id) ... 15525dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // 15535dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // This is effectively turning @throw into an incredibly-expensive goto, but 15545dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // it may happen as a result of inlining followed by missed optimizations, or 15555dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // as a result of stupidity. 15565dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *UnwindBB = CGF.getInvokeDest(); 15575dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (!UnwindBB) { 15585dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateCall(ThrowFn, ExceptionAsObject); 15595dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateUnreachable(); 15605dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } else { 15615dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateInvoke(ThrowFn, UnwindBB, UnwindBB, &ExceptionAsObject, 15625dc0867af17b3bd6f567897433853b2b4767446cChris Lattner &ExceptionAsObject+1); 15635dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 15645dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Clear the insertion point to indicate we are in unreachable code. 15655dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.ClearInsertionPoint(); 156664d5d6c5903157c521af496479d06dc26032d718Anders Carlsson} 156764d5d6c5903157c521af496479d06dc26032d718Anders Carlsson 15683e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanianllvm::Value * CGObjCGNU::EmitObjCWeakRead(CodeGen::CodeGenFunction &CGF, 15696dc2317b59cb1180a59f6c283d96b7a5dfeb5307Fariborz Jahanian llvm::Value *AddrWeakObj) 15706dc2317b59cb1180a59f6c283d96b7a5dfeb5307Fariborz Jahanian{ 15716dc2317b59cb1180a59f6c283d96b7a5dfeb5307Fariborz Jahanian return 0; 15726dc2317b59cb1180a59f6c283d96b7a5dfeb5307Fariborz Jahanian} 15736dc2317b59cb1180a59f6c283d96b7a5dfeb5307Fariborz Jahanian 15743e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanianvoid CGObjCGNU::EmitObjCWeakAssign(CodeGen::CodeGenFunction &CGF, 15753e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian llvm::Value *src, llvm::Value *dst) 15763e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian{ 15773e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian return; 15783e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian} 15793e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian 158058626500527695865683d1d65053743de8770b60Fariborz Jahanianvoid CGObjCGNU::EmitObjCGlobalAssign(CodeGen::CodeGenFunction &CGF, 158158626500527695865683d1d65053743de8770b60Fariborz Jahanian llvm::Value *src, llvm::Value *dst) 158258626500527695865683d1d65053743de8770b60Fariborz Jahanian{ 158358626500527695865683d1d65053743de8770b60Fariborz Jahanian return; 158458626500527695865683d1d65053743de8770b60Fariborz Jahanian} 158558626500527695865683d1d65053743de8770b60Fariborz Jahanian 15867eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanianvoid CGObjCGNU::EmitObjCIvarAssign(CodeGen::CodeGenFunction &CGF, 15877eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanian llvm::Value *src, llvm::Value *dst) 15887eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanian{ 15897eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanian return; 15907eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanian} 15917eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanian 159258626500527695865683d1d65053743de8770b60Fariborz Jahanianvoid CGObjCGNU::EmitObjCStrongCastAssign(CodeGen::CodeGenFunction &CGF, 159358626500527695865683d1d65053743de8770b60Fariborz Jahanian llvm::Value *src, llvm::Value *dst) 159458626500527695865683d1d65053743de8770b60Fariborz Jahanian{ 159558626500527695865683d1d65053743de8770b60Fariborz Jahanian return; 159658626500527695865683d1d65053743de8770b60Fariborz Jahanian} 159758626500527695865683d1d65053743de8770b60Fariborz Jahanian 1598082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanianvoid CGObjCGNU::EmitGCMemmoveCollectable(CodeGen::CodeGenFunction &CGF, 1599082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian llvm::Value *DestPtr, 1600082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian llvm::Value *SrcPtr, 1601082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian unsigned long size) { 1602082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian return; 1603082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian} 1604082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian 16059cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanianllvm::GlobalVariable *CGObjCGNU::ObjCIvarOffsetVariable( 16069cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCInterfaceDecl *ID, 16079cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCIvarDecl *Ivar) { 16089cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const std::string Name = "__objc_ivar_offset_" + ID->getNameAsString() 16099cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian + '.' + Ivar->getNameAsString(); 16109cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // Emit the variable and initialize it with what we think the correct value 16119cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // is. This allows code compiled with non-fragile ivars to work correctly 16129cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // when linked against code which isn't (most of the time). 16138a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::GlobalVariable *IvarOffsetPointer = TheModule.getNamedGlobal(Name); 16148a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall if (!IvarOffsetPointer) { 16159cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian uint64_t Offset = ComputeIvarBaseOffset(CGM, ID, Ivar); 16169cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian llvm::ConstantInt *OffsetGuess = 16174a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson llvm::ConstantInt::get(LongTy, Offset, "ivar"); 16188a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // Don't emit the guess in non-PIC code because the linker will not be able 16198a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // to replace it with the real version for a library. In non-PIC code you 16208a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // must compile with the fragile ABI if you want to use ivars from a 16218a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // GCC-compiled class. 16228a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall if (CGM.getLangOptions().PICLevel) { 16238a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::GlobalVariable *IvarOffsetGV = new llvm::GlobalVariable(TheModule, 16248a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::Type::getInt32Ty(VMContext), false, 16258a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::GlobalValue::PrivateLinkage, OffsetGuess, Name+".guess"); 16268a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall IvarOffsetPointer = new llvm::GlobalVariable(TheModule, 16278a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall IvarOffsetGV->getType(), false, llvm::GlobalValue::LinkOnceAnyLinkage, 16288a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall IvarOffsetGV, Name); 16298a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall } else { 16308a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall IvarOffsetPointer = new llvm::GlobalVariable(TheModule, 16318a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::PointerType::getUnqual(llvm::Type::getInt32Ty(VMContext)), 16328a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall false, llvm::GlobalValue::ExternalLinkage, 0, Name); 16338a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall } 16349cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 16358a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall return IvarOffsetPointer; 16369cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian} 16379cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian 1638598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz JahanianLValue CGObjCGNU::EmitObjCValueForIvar(CodeGen::CodeGenFunction &CGF, 1639598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian QualType ObjectTy, 1640598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian llvm::Value *BaseValue, 1641598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian const ObjCIvarDecl *Ivar, 1642598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian unsigned CVRQualifiers) { 1643525c9b7baeeff022127cd1b167579f3bda73b3edDaniel Dunbar const ObjCInterfaceDecl *ID = ObjectTy->getAsObjCInterfaceType()->getDecl(); 16449777687562c338601c2f17906e65e1c1a0aad96fDaniel Dunbar return EmitValueForIvarAtOffset(CGF, ID, BaseValue, Ivar, CVRQualifiers, 16459777687562c338601c2f17906e65e1c1a0aad96fDaniel Dunbar EmitIvarOffset(CGF, ID, Ivar)); 16460bb20361a321593887f067515dd04cf109f4c74aFariborz Jahanian} 1647bb1c8600218b3244340331165fc7cba7bf227655Mike Stump 16489cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanianstatic const ObjCInterfaceDecl *FindIvarInterface(ASTContext &Context, 16499cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCInterfaceDecl *OID, 16509cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCIvarDecl *OIVD) { 16519cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian llvm::SmallVector<ObjCIvarDecl*, 16> Ivars; 16528e6ac1d80055fa37b9b84029c7e751624ba7f84cFariborz Jahanian Context.ShallowCollectObjCIvars(OID, Ivars); 16539cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian for (unsigned k = 0, e = Ivars.size(); k != e; ++k) { 16549cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian if (OIVD == Ivars[k]) 16559cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian return OID; 16569cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 16579cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian 16589cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // Otherwise check in the super class. 16599cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian if (const ObjCInterfaceDecl *Super = OID->getSuperClass()) 16609cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian return FindIvarInterface(Context, Super, OIVD); 16619cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian 16629cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian return 0; 16639cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian} 16640bb20361a321593887f067515dd04cf109f4c74aFariborz Jahanian 1665f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanianllvm::Value *CGObjCGNU::EmitIvarOffset(CodeGen::CodeGenFunction &CGF, 16662a03192a02dbf4fdff438d1e658356bde871aba4Daniel Dunbar const ObjCInterfaceDecl *Interface, 1667f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian const ObjCIvarDecl *Ivar) { 16688a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall if (CGM.getLangOptions().ObjCNonFragileABI) { 16699cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian Interface = FindIvarInterface(CGM.getContext(), Interface, Ivar); 16708a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall return CGF.Builder.CreateLoad(CGF.Builder.CreateLoad( 16718a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall ObjCIvarOffsetVariable(Interface, Ivar), false, "ivar")); 16729cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 16739777687562c338601c2f17906e65e1c1a0aad96fDaniel Dunbar uint64_t Offset = ComputeIvarBaseOffset(CGF.CGM, Interface, Ivar); 16744a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson return llvm::ConstantInt::get(LongTy, Offset, "ivar"); 1675f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian} 1676f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian 1677bb1c8600218b3244340331165fc7cba7bf227655Mike StumpCodeGen::CGObjCRuntime * 1678bb1c8600218b3244340331165fc7cba7bf227655Mike StumpCodeGen::CreateGNUObjCRuntime(CodeGen::CodeGenModule &CGM) { 1679dce1406f1c1f572cfd61c494546572d63461c741Chris Lattner return new CGObjCGNU(CGM); 16800f984268b05edab2cc555a427c441baa9c252658Chris Lattner} 1681