CGObjCGNU.cpp revision bb1c8600218b3244340331165fc7cba7bf227655
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; 56e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::IntegerType *IntTy; 57e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::PointerType *PtrTy; 58e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::IntegerType *LongTy; 59e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::PointerType *PtrToIntTy; 605efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar llvm::GlobalAlias *ClassPtrAlias; 615efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar llvm::GlobalAlias *MetaClassPtrAlias; 6220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Classes; 6320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Categories; 6420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> ConstantStrings; 6520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Function *LoadFunction; 6620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StringMap<llvm::Constant*> ExistingProtocols; 6720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov typedef std::pair<std::string, std::string> TypedSelector; 6820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::map<TypedSelector, llvm::GlobalAlias*> TypedSelectors; 6920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StringMap<llvm::GlobalAlias*> UntypedSelectors; 7020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Some zeros used for GEPs in lots of places. 7120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Zeros[2]; 7220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *NULLPtr; 73a1cf15f4680e5cf39e72e28c5ea854fcba792e84Owen Anderson llvm::LLVMContext &VMContext; 7420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovprivate: 7520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateIvarList( 7620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarNames, 7720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarTypes, 7820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarOffsets); 7920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateMethodList(const std::string &ClassName, 8020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const std::string &CategoryName, 81a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner const llvm::SmallVectorImpl<Selector> &MethodSels, 8220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &MethodTypes, 8320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov bool isClassMethodList); 84f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::Constant *GenerateEmptyProtocol(const std::string &ProtocolName); 8520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateProtocolList( 8620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<std::string> &Protocols); 8720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateClassStructure( 8820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MetaClass, 8920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SuperClass, 9020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov unsigned info, 91d002cc6fc5b72bf00e3b7b4571ccf0f23c789b4bChris Lattner const char *Name, 9220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Version, 9320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *InstanceSize, 9420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *IVars, 9520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Methods, 9620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Protocols); 9720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateProtocolMethodList( 9820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &MethodNames, 9920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &MethodTypes); 10020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MakeConstantString(const std::string &Str, const std::string 10120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov &Name=""); 10220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MakeGlobal(const llvm::StructType *Ty, 10320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> &V, const std::string &Name=""); 10420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MakeGlobal(const llvm::ArrayType *Ty, 10520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> &V, const std::string &Name=""); 1069cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian llvm::GlobalVariable *ObjCIvarOffsetVariable(const ObjCInterfaceDecl *ID, 1079cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCIvarDecl *Ivar); 1082a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner void EmitClassRef(const std::string &className); 1090f984268b05edab2cc555a427c441baa9c252658Chris Lattnerpublic: 110dce1406f1c1f572cfd61c494546572d63461c741Chris Lattner CGObjCGNU(CodeGen::CodeGenModule &cgm); 11133fdb738a6c125f4c788733897021b7c1a062b0cSteve Naroff virtual llvm::Constant *GenerateConstantString(const ObjCStringLiteral *); 1128f2926b73ed635afecd020da787af6a837601a2bDaniel Dunbar virtual CodeGen::RValue 1138f2926b73ed635afecd020da787af6a837601a2bDaniel Dunbar GenerateMessageSend(CodeGen::CodeGenFunction &CGF, 1147f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar QualType ResultType, 1157f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar Selector Sel, 116f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar llvm::Value *Receiver, 11719cd87eb5fb3c197e631ce08fd52c446c4d4e8f1Daniel Dunbar bool IsClassMessage, 118df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian const CallArgList &CallArgs, 119df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian const ObjCMethodDecl *Method); 1208f2926b73ed635afecd020da787af6a837601a2bDaniel Dunbar virtual CodeGen::RValue 1218f2926b73ed635afecd020da787af6a837601a2bDaniel Dunbar GenerateMessageSendSuper(CodeGen::CodeGenFunction &CGF, 1227f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar QualType ResultType, 1237f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar Selector Sel, 124f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar const ObjCInterfaceDecl *Class, 1257ce77920a35060f1c8dd72e541e42ce296ccd168Fariborz Jahanian bool isCategoryImpl, 126f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar llvm::Value *Receiver, 12719cd87eb5fb3c197e631ce08fd52c446c4d4e8f1Daniel Dunbar bool IsClassMessage, 12819cd87eb5fb3c197e631ce08fd52c446c4d4e8f1Daniel Dunbar const CallArgList &CallArgs); 12945d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbar virtual llvm::Value *GetClass(CGBuilderTy &Builder, 130ddb2a3d55a24a1dbdf9152621642d9a4b4fc2f61Daniel Dunbar const ObjCInterfaceDecl *OID); 13145d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbar virtual llvm::Value *GetSelector(CGBuilderTy &Builder, Selector Sel); 132df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian virtual llvm::Value *GetSelector(CGBuilderTy &Builder, const ObjCMethodDecl 133df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian *Method); 1348e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner 135679a502d462ef819e6175b58e255ca3f3391e7cfFariborz Jahanian virtual llvm::Function *GenerateMethod(const ObjCMethodDecl *OMD, 136679a502d462ef819e6175b58e255ca3f3391e7cfFariborz Jahanian const ObjCContainerDecl *CD); 1377ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar virtual void GenerateCategory(const ObjCCategoryImplDecl *CMD); 1387ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar virtual void GenerateClass(const ObjCImplementationDecl *ClassDecl); 13945d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbar virtual llvm::Value *GenerateProtocolRef(CGBuilderTy &Builder, 140af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar const ObjCProtocolDecl *PD); 141af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar virtual void GenerateProtocol(const ObjCProtocolDecl *PD); 14220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov virtual llvm::Function *ModuleInitFunction(); 14349f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar virtual llvm::Function *GetPropertyGetFunction(); 14449f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar virtual llvm::Function *GetPropertySetFunction(); 145309a4368cd299cff30ab22709e2b772cf8059e45Daniel Dunbar virtual llvm::Constant *EnumerationMutationFunction(); 14664d5d6c5903157c521af496479d06dc26032d718Anders Carlsson 147bd71be4683c195260d5245118b1e13e6b2e20504Fariborz Jahanian virtual void EmitTryOrSynchronizedStmt(CodeGen::CodeGenFunction &CGF, 148bd71be4683c195260d5245118b1e13e6b2e20504Fariborz Jahanian const Stmt &S); 14964d5d6c5903157c521af496479d06dc26032d718Anders Carlsson virtual void EmitThrowStmt(CodeGen::CodeGenFunction &CGF, 15064d5d6c5903157c521af496479d06dc26032d718Anders Carlsson const ObjCAtThrowStmt &S); 1513e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian virtual llvm::Value * EmitObjCWeakRead(CodeGen::CodeGenFunction &CGF, 1526dc2317b59cb1180a59f6c283d96b7a5dfeb5307Fariborz Jahanian llvm::Value *AddrWeakObj); 1533e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian virtual void EmitObjCWeakAssign(CodeGen::CodeGenFunction &CGF, 1543e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian llvm::Value *src, llvm::Value *dst); 15558626500527695865683d1d65053743de8770b60Fariborz Jahanian virtual void EmitObjCGlobalAssign(CodeGen::CodeGenFunction &CGF, 15658626500527695865683d1d65053743de8770b60Fariborz Jahanian llvm::Value *src, llvm::Value *dest); 1577eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanian virtual void EmitObjCIvarAssign(CodeGen::CodeGenFunction &CGF, 1587eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanian llvm::Value *src, llvm::Value *dest); 15958626500527695865683d1d65053743de8770b60Fariborz Jahanian virtual void EmitObjCStrongCastAssign(CodeGen::CodeGenFunction &CGF, 16058626500527695865683d1d65053743de8770b60Fariborz Jahanian llvm::Value *src, llvm::Value *dest); 161082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian virtual void EmitGCMemmoveCollectable(CodeGen::CodeGenFunction &CGF, 162082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian llvm::Value *DestPtr, 163082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian llvm::Value *SrcPtr, 164082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian unsigned long size); 165598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian virtual LValue EmitObjCValueForIvar(CodeGen::CodeGenFunction &CGF, 166598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian QualType ObjectTy, 167598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian llvm::Value *BaseValue, 168598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian const ObjCIvarDecl *Ivar, 169598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian unsigned CVRQualifiers); 170f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian virtual llvm::Value *EmitIvarOffset(CodeGen::CodeGenFunction &CGF, 1712a03192a02dbf4fdff438d1e658356bde871aba4Daniel Dunbar const ObjCInterfaceDecl *Interface, 172f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian const ObjCIvarDecl *Ivar); 1730f984268b05edab2cc555a427c441baa9c252658Chris Lattner}; 1740f984268b05edab2cc555a427c441baa9c252658Chris Lattner} // end anonymous namespace 1750f984268b05edab2cc555a427c441baa9c252658Chris Lattner 17620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 1772a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner/// Emits a reference to a dummy variable which is emitted with each class. 1782a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner/// This ensures that a linker error will be generated when trying to link 1792a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner/// together modules where a referenced class is not defined. 180bb1c8600218b3244340331165fc7cba7bf227655Mike Stumpvoid CGObjCGNU::EmitClassRef(const std::string &className) { 1812a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner std::string symbolRef = "__objc_class_ref_" + className; 1822a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner // Don't emit two copies of the same symbol 183bb1c8600218b3244340331165fc7cba7bf227655Mike Stump if (TheModule.getGlobalVariable(symbolRef)) 184bb1c8600218b3244340331165fc7cba7bf227655Mike Stump return; 1852a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner std::string symbolName = "__objc_class_name_" + className; 1862a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner llvm::GlobalVariable *ClassSymbol = TheModule.getGlobalVariable(symbolName); 1872a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner if (!ClassSymbol) { 1881c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson ClassSymbol = new llvm::GlobalVariable(TheModule, LongTy, false, 1891c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson llvm::GlobalValue::ExternalLinkage, 0, symbolName); 1902a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner } 1911c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson new llvm::GlobalVariable(TheModule, ClassSymbol->getType(), true, 1921c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson llvm::GlobalValue::CommonLinkage, ClassSymbol, symbolRef); 1932a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner} 19420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 19520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovstatic std::string SymbolNameForClass(const std::string &ClassName) { 1962a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner return "_OBJC_CLASS_" + ClassName; 19720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 19820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 19920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovstatic std::string SymbolNameForMethod(const std::string &ClassName, const 20020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::string &CategoryName, const std::string &MethodName, bool isClassMethod) 20120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov{ 2022a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner return "_OBJC_METHOD_" + ClassName + "("+CategoryName+")"+ 20320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov (isClassMethod ? "+" : "-") + MethodName; 20420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 20520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 206dce1406f1c1f572cfd61c494546572d63461c741Chris LattnerCGObjCGNU::CGObjCGNU(CodeGen::CodeGenModule &cgm) 2075efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar : CGM(cgm), TheModule(CGM.getModule()), ClassPtrAlias(0), 208a1cf15f4680e5cf39e72e28c5ea854fcba792e84Owen Anderson MetaClassPtrAlias(0), VMContext(cgm.getLLVMContext()) { 209e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner IntTy = cast<llvm::IntegerType>( 210e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner CGM.getTypes().ConvertType(CGM.getContext().IntTy)); 211e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner LongTy = cast<llvm::IntegerType>( 212e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner CGM.getTypes().ConvertType(CGM.getContext().LongTy)); 213dce1406f1c1f572cfd61c494546572d63461c741Chris Lattner 2144a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Zeros[0] = llvm::ConstantInt::get(LongTy, 0); 21520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Zeros[1] = Zeros[0]; 21603e205031b08669f05c41eed5b896fc94c4a12bbOwen Anderson NULLPtr = llvm::ConstantPointerNull::get( 21796e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(llvm::Type::Int8Ty)); 218391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner // C string type. Used in lots of places. 219391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner PtrToInt8Ty = 22096e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(llvm::Type::Int8Ty); 221391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner // Get the selector Type. 222e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner SelectorTy = cast<llvm::PointerType>( 223e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner CGM.getTypes().ConvertType(CGM.getContext().getObjCSelType())); 224e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner 22596e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson PtrToIntTy = llvm::PointerType::getUnqual(IntTy); 226391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner PtrTy = PtrToInt8Ty; 227391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner 228391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner // Object type 229b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian IdTy = cast<llvm::PointerType>( 230b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CGM.getTypes().ConvertType(CGM.getContext().getObjCIdType())); 231391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner 232391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner // IMP type 233391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner std::vector<const llvm::Type*> IMPArgs; 234391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner IMPArgs.push_back(IdTy); 235391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner IMPArgs.push_back(SelectorTy); 23696e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson IMPTy = llvm::FunctionType::get(IdTy, IMPArgs, true); 23720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 238bb1c8600218b3244340331165fc7cba7bf227655Mike Stump 23920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// This has to perform the lookup every time, since posing and related 24020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// techniques can modify the name -> class mapping. 24145d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbarllvm::Value *CGObjCGNU::GetClass(CGBuilderTy &Builder, 242ddb2a3d55a24a1dbdf9152621642d9a4b4fc2f61Daniel Dunbar const ObjCInterfaceDecl *OID) { 243d9d22dd9c94618490dbffb0e2caf222530ca39d3Chris Lattner llvm::Value *ClassName = CGM.GetAddrOfConstantCString(OID->getNameAsString()); 2442a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner EmitClassRef(OID->getNameAsString()); 245ddb2a3d55a24a1dbdf9152621642d9a4b4fc2f61Daniel Dunbar ClassName = Builder.CreateStructGEP(ClassName, 0); 246ddb2a3d55a24a1dbdf9152621642d9a4b4fc2f61Daniel Dunbar 24726c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian std::vector<const llvm::Type*> Params(1, PtrToInt8Ty); 24820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ClassLookupFn = 24996e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson CGM.CreateRuntimeFunction(llvm::FunctionType::get(IdTy, 25026c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian Params, 25126c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian true), 25226c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian "objc_lookup_class"); 25320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return Builder.CreateCall(ClassLookupFn, ClassName); 254391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner} 255391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner 25645d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbarllvm::Value *CGObjCGNU::GetSelector(CGBuilderTy &Builder, Selector Sel) { 257077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner llvm::GlobalAlias *&US = UntypedSelectors[Sel.getAsString()]; 2588e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner if (US == 0) 25996e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson US = new llvm::GlobalAlias(llvm::PointerType::getUnqual(SelectorTy), 2608e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner llvm::GlobalValue::InternalLinkage, 2618e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner ".objc_untyped_selector_alias", 2628e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner NULL, &TheModule); 2638e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner 2648e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner return Builder.CreateLoad(US); 265df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian} 266df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian 267df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanianllvm::Value *CGObjCGNU::GetSelector(CGBuilderTy &Builder, const ObjCMethodDecl 268df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian *Method) { 269df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian 270df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian std::string SelName = Method->getSelector().getAsString(); 271df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian std::string SelTypes; 272df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian CGM.getContext().getObjCEncodingForMethodDecl(Method, SelTypes); 273df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian // Typed selectors 274df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian TypedSelector Selector = TypedSelector(SelName, 275df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian SelTypes); 276df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian 277df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian // If it's already cached, return it. 278bb1c8600218b3244340331165fc7cba7bf227655Mike Stump if (TypedSelectors[Selector]) { 279bb1c8600218b3244340331165fc7cba7bf227655Mike Stump return Builder.CreateLoad(TypedSelectors[Selector]); 280df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian } 281df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian 282df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian // If it isn't, cache it. 283df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian llvm::GlobalAlias *Sel = new llvm::GlobalAlias( 28496e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(SelectorTy), 285df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian llvm::GlobalValue::InternalLinkage, SelName, 286df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian NULL, &TheModule); 287df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian TypedSelectors[Selector] = Sel; 288df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian 289df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian return Builder.CreateLoad(Sel); 2908e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner} 2918e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner 2925e7dcc62e4637591959f9c372f6c5258d0d263e0Chris Lattnerllvm::Constant *CGObjCGNU::MakeConstantString(const std::string &Str, 2935e7dcc62e4637591959f9c372f6c5258d0d263e0Chris Lattner const std::string &Name) { 2947db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson llvm::Constant * ConstStr = llvm::ConstantArray::get(Str); 2951c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson ConstStr = new llvm::GlobalVariable(TheModule, ConstStr->getType(), true, 296bb1c8600218b3244340331165fc7cba7bf227655Mike Stump llvm::GlobalValue::InternalLinkage, 297bb1c8600218b3244340331165fc7cba7bf227655Mike Stump ConstStr, Name); 2983c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson return llvm::ConstantExpr::getGetElementPtr(ConstStr, Zeros, 2); 29920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 300bb1c8600218b3244340331165fc7cba7bf227655Mike Stump 30120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::MakeGlobal(const llvm::StructType *Ty, 30220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> &V, const std::string &Name) { 30308e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson llvm::Constant *C = llvm::ConstantStruct::get(Ty, V); 3041c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson return new llvm::GlobalVariable(TheModule, Ty, false, 3051c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson llvm::GlobalValue::InternalLinkage, C, Name); 30620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 307bb1c8600218b3244340331165fc7cba7bf227655Mike Stump 30820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::MakeGlobal(const llvm::ArrayType *Ty, 30920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> &V, const std::string &Name) { 3107db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson llvm::Constant *C = llvm::ConstantArray::get(Ty, V); 3111c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson return new llvm::GlobalVariable(TheModule, Ty, false, 312bb1c8600218b3244340331165fc7cba7bf227655Mike Stump llvm::GlobalValue::InternalLinkage, C, Name); 31320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 31420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 31520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// Generate an NSConstantString object. 31620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov//TODO: In case there are any crazy people still using the GNU runtime without 31720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov//an OpenStep implementation, this should let them select their own class for 31820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov//constant strings. 31933fdb738a6c125f4c788733897021b7c1a062b0cSteve Naroffllvm::Constant *CGObjCGNU::GenerateConstantString(const ObjCStringLiteral *SL) { 32033fdb738a6c125f4c788733897021b7c1a062b0cSteve Naroff std::string Str(SL->getString()->getStrData(), 32133fdb738a6c125f4c788733897021b7c1a062b0cSteve Naroff SL->getString()->getByteLength()); 32220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Ivars; 32320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Ivars.push_back(NULLPtr); 32413fd7e5111032f54b538dd66d035b0ccc1f82467Chris Lattner Ivars.push_back(MakeConstantString(Str)); 3254a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Ivars.push_back(llvm::ConstantInt::get(IntTy, Str.size())); 32620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ObjCStr = MakeGlobal( 32796e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::StructType::get(PtrToInt8Ty, PtrToInt8Ty, IntTy, NULL), 32820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Ivars, ".objc_str"); 32920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ConstantStrings.push_back( 3303c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::ConstantExpr::getBitCast(ObjCStr, PtrToInt8Ty)); 33120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return ObjCStr; 33220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 33320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 33420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov///Generates a message send where the super is the receiver. This is a message 33520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov///send to self with special delivery semantics indicating which class's method 33620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov///should be called. 3378f2926b73ed635afecd020da787af6a837601a2bDaniel DunbarCodeGen::RValue 3388f2926b73ed635afecd020da787af6a837601a2bDaniel DunbarCGObjCGNU::GenerateMessageSendSuper(CodeGen::CodeGenFunction &CGF, 3397f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar QualType ResultType, 3407f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar Selector Sel, 341f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar const ObjCInterfaceDecl *Class, 3427ce77920a35060f1c8dd72e541e42ce296ccd168Fariborz Jahanian bool isCategoryImpl, 343f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar llvm::Value *Receiver, 34419cd87eb5fb3c197e631ce08fd52c446c4d4e8f1Daniel Dunbar bool IsClassMessage, 34519cd87eb5fb3c197e631ce08fd52c446c4d4e8f1Daniel Dunbar const CallArgList &CallArgs) { 346b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian llvm::Value *cmd = GetSelector(CGF.Builder, Sel); 347b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 348b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CallArgList ActualArgs; 349b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 350b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian ActualArgs.push_back( 351b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian std::make_pair(RValue::get(CGF.Builder.CreateBitCast(Receiver, IdTy)), 352b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CGF.getContext().getObjCIdType())); 353b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian ActualArgs.push_back(std::make_pair(RValue::get(cmd), 354b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CGF.getContext().getObjCSelType())); 355b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian ActualArgs.insert(ActualArgs.end(), CallArgs.begin(), CallArgs.end()); 356b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 357b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CodeGenTypes &Types = CGM.getTypes(); 358b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian const CGFunctionInfo &FnInfo = Types.getFunctionInfo(ResultType, ActualArgs); 359b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian const llvm::FunctionType *impType = Types.GetFunctionType(FnInfo, false); 360b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 3615efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar llvm::Value *ReceiverClass = 0; 36248e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (isCategoryImpl) { 36348e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner llvm::Constant *classLookupFunction = 0; 36448e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner std::vector<const llvm::Type*> Params; 36548e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner Params.push_back(PtrTy); 36648e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (IsClassMessage) { 36796e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson classLookupFunction = CGM.CreateRuntimeFunction(llvm::FunctionType::get( 36848e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner IdTy, Params, true), "objc_get_meta_class"); 36948e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner } else { 37096e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson classLookupFunction = CGM.CreateRuntimeFunction(llvm::FunctionType::get( 37148e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner IdTy, Params, true), "objc_get_class"); 3725efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } 37348e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner ReceiverClass = CGF.Builder.CreateCall(classLookupFunction, 37448e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner MakeConstantString(Class->getNameAsString())); 3755efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } else { 37648e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner // Set up global aliases for the metaclass or class pointer if they do not 37748e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner // already exist. These will are forward-references which will be set to 378bb1c8600218b3244340331165fc7cba7bf227655Mike Stump // pointers to the class and metaclass structure created for the runtime 379bb1c8600218b3244340331165fc7cba7bf227655Mike Stump // load function. To send a message to super, we look up the value of the 38048e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner // super_class pointer from either the class or metaclass structure. 38148e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (IsClassMessage) { 38248e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (!MetaClassPtrAlias) { 38348e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner MetaClassPtrAlias = new llvm::GlobalAlias(IdTy, 38448e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner llvm::GlobalValue::InternalLinkage, ".objc_metaclass_ref" + 38548e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner Class->getNameAsString(), NULL, &TheModule); 38648e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner } 38748e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner ReceiverClass = MetaClassPtrAlias; 38848e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner } else { 38948e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (!ClassPtrAlias) { 39048e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner ClassPtrAlias = new llvm::GlobalAlias(IdTy, 39148e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner llvm::GlobalValue::InternalLinkage, ".objc_class_ref" + 39248e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner Class->getNameAsString(), NULL, &TheModule); 39348e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner } 39448e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner ReceiverClass = ClassPtrAlias; 3955efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } 39671238f67c5df13eef19450d66b7a7ab28377192aChris Lattner } 3975efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar // Cast the pointer to a simplified version of the class structure 3985efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar ReceiverClass = CGF.Builder.CreateBitCast(ReceiverClass, 39996e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual( 40096e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::StructType::get(IdTy, IdTy, NULL))); 4015efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar // Get the superclass pointer 4025efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar ReceiverClass = CGF.Builder.CreateStructGEP(ReceiverClass, 1); 4035efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar // Load the superclass pointer 4045efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar ReceiverClass = CGF.Builder.CreateLoad(ReceiverClass); 40520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Construct the structure used to look up the IMP 40696e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::StructType *ObjCSuperTy = llvm::StructType::get(Receiver->getType(), 40720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IdTy, NULL); 4088f2926b73ed635afecd020da787af6a837601a2bDaniel Dunbar llvm::Value *ObjCSuper = CGF.Builder.CreateAlloca(ObjCSuperTy); 409b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 4108f2926b73ed635afecd020da787af6a837601a2bDaniel Dunbar CGF.Builder.CreateStore(Receiver, CGF.Builder.CreateStructGEP(ObjCSuper, 0)); 4115efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar CGF.Builder.CreateStore(ReceiverClass, 4125efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar CGF.Builder.CreateStructGEP(ObjCSuper, 1)); 41320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 41420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Get the IMP 41526c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian std::vector<const llvm::Type*> Params; 41696e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson Params.push_back(llvm::PointerType::getUnqual(ObjCSuperTy)); 41726c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian Params.push_back(SelectorTy); 41820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *lookupFunction = 41996e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson CGM.CreateRuntimeFunction(llvm::FunctionType::get( 42096e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(impType), Params, true), 42126c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian "objc_msg_lookup_super"); 42226c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian 42320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Value *lookupArgs[] = {ObjCSuper, cmd}; 4248f2926b73ed635afecd020da787af6a837601a2bDaniel Dunbar llvm::Value *imp = CGF.Builder.CreateCall(lookupFunction, lookupArgs, 42520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov lookupArgs+2); 42620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 427b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian return CGF.EmitCall(FnInfo, imp, ActualArgs); 42820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 42920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 43020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// Generate code for a message send expression. 4318f2926b73ed635afecd020da787af6a837601a2bDaniel DunbarCodeGen::RValue 4328f2926b73ed635afecd020da787af6a837601a2bDaniel DunbarCGObjCGNU::GenerateMessageSend(CodeGen::CodeGenFunction &CGF, 4337f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar QualType ResultType, 4347f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar Selector Sel, 435f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar llvm::Value *Receiver, 43619cd87eb5fb3c197e631ce08fd52c446c4d4e8f1Daniel Dunbar bool IsClassMessage, 437df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian const CallArgList &CallArgs, 438df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian const ObjCMethodDecl *Method) { 439df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian llvm::Value *cmd; 440df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian if (Method) 441df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian cmd = GetSelector(CGF.Builder, Method); 442df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian else 443df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian cmd = GetSelector(CGF.Builder, Sel); 444b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CallArgList ActualArgs; 445b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 446b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian ActualArgs.push_back( 44734e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian std::make_pair(RValue::get(CGF.Builder.CreateBitCast(Receiver, IdTy)), 44834e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian CGF.getContext().getObjCIdType())); 449b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian ActualArgs.push_back(std::make_pair(RValue::get(cmd), 450b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CGF.getContext().getObjCSelType())); 451b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian ActualArgs.insert(ActualArgs.end(), CallArgs.begin(), CallArgs.end()); 452b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 453b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CodeGenTypes &Types = CGM.getTypes(); 454b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian const CGFunctionInfo &FnInfo = Types.getFunctionInfo(ResultType, ActualArgs); 455b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian const llvm::FunctionType *impType = Types.GetFunctionType(FnInfo, false); 4560f984268b05edab2cc555a427c441baa9c252658Chris Lattner 45734e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian llvm::Value *imp; 45826c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian std::vector<const llvm::Type*> Params; 45926c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian Params.push_back(Receiver->getType()); 46026c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian Params.push_back(SelectorTy); 46134e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian // For sender-aware dispatch, we pass the sender as the third argument to a 46234e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian // lookup function. When sending messages from C code, the sender is nil. 46334e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian // objc_msg_lookup_sender(id receiver, SEL selector, id sender); 46434e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian if (CGM.getContext().getLangOptions().ObjCSenderDispatch) { 46534e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian llvm::Value *self; 46634e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian 46734e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian if (isa<ObjCMethodDecl>(CGF.CurFuncDecl)) { 46834e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian self = CGF.LoadObjCSelf(); 46934e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian } else { 47003e205031b08669f05c41eed5b896fc94c4a12bbOwen Anderson self = llvm::ConstantPointerNull::get(IdTy); 47134e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian } 47234e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian Params.push_back(self->getType()); 47334e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian llvm::Constant *lookupFunction = 47496e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson CGM.CreateRuntimeFunction(llvm::FunctionType::get( 47596e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(impType), Params, true), 47634e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian "objc_msg_lookup_sender"); 47726c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian 47834e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian imp = CGF.Builder.CreateCall3(lookupFunction, Receiver, cmd, self); 47934e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian } else { 48034e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian llvm::Constant *lookupFunction = 48196e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson CGM.CreateRuntimeFunction(llvm::FunctionType::get( 48296e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(impType), Params, true), 48334e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian "objc_msg_lookup"); 48434e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian 48534e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian imp = CGF.Builder.CreateCall2(lookupFunction, Receiver, cmd); 48634e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian } 4873eae03e7d165f20a863a9a4d7122ba2a691ab16dChris Lattner 488b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian return CGF.EmitCall(FnInfo, imp, ActualArgs); 48920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 49020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 49120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// Generates a MethodList. Used in construction of a objc_class and 49220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// objc_category structures. 49320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::GenerateMethodList(const std::string &ClassName, 494a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner const std::string &CategoryName, 495a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner const llvm::SmallVectorImpl<Selector> &MethodSels, 49620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &MethodTypes, 49720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov bool isClassMethodList) { 49820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Get the method structure type. 49996e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::StructType *ObjCMethodTy = llvm::StructType::get( 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))) { 5121e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian llvm::Constant *C = 5131e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian CGM.GetAddrOfConstantCString(MethodSels[i].getAsString()); 5143c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getGetElementPtr(C, Zeros, 2)); 5151e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian Elements.push_back( 5163c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::ConstantExpr::getGetElementPtr(MethodTypes[i], Zeros, 2)); 5173c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Method = llvm::ConstantExpr::getBitCast(Method, 51896e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(IMPTy)); 5191e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian Elements.push_back(Method); 52008e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson Methods.push_back(llvm::ConstantStruct::get(ObjCMethodTy, Elements)); 5211e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian } 52220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 52320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 52420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Array of method structures 52596e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *ObjCMethodArrayTy = llvm::ArrayType::get(ObjCMethodTy, 5261e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian Methods.size()); 5277db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson llvm::Constant *MethodArray = llvm::ConstantArray::get(ObjCMethodArrayTy, 528fba676396703e87a5034e5f308aa30a633468f66Chris Lattner Methods); 52920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 53020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Structure containing list pointer, array and array count 53120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::SmallVector<const llvm::Type*, 16> ObjCMethodListFields; 53296e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PATypeHolder OpaqueNextTy = llvm::OpaqueType::get(); 53396e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::Type *NextPtrTy = llvm::PointerType::getUnqual(OpaqueNextTy); 53496e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::StructType *ObjCMethodListTy = llvm::StructType::get(NextPtrTy, 53520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IntTy, 53620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ObjCMethodArrayTy, 53720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 53820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Refine next pointer type to concrete type 53920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::cast<llvm::OpaqueType>( 54020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov OpaqueNextTy.get())->refineAbstractTypeTo(ObjCMethodListTy); 54120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ObjCMethodListTy = llvm::cast<llvm::StructType>(OpaqueNextTy.get()); 54220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 54320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.clear(); 54403e205031b08669f05c41eed5b896fc94c4a12bbOwen Anderson Methods.push_back(llvm::ConstantPointerNull::get( 54596e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(ObjCMethodListTy))); 5464a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Methods.push_back(llvm::ConstantInt::get(llvm::Type::Int32Ty, 54720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov MethodTypes.size())); 54820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.push_back(MethodArray); 54920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 55020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an instance of the structure 55120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ObjCMethodListTy, Methods, ".objc_method_list"); 55220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 55320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 55420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// Generates an IvarList. Used in construction of a objc_class. 55520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::GenerateIvarList( 55620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarNames, 55720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarTypes, 55820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarOffsets) { 55920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Get the method structure type. 56096e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::StructType *ObjCIvarTy = llvm::StructType::get( 56120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 56220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 56320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IntTy, 56420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 56520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Ivars; 56620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 56720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (unsigned int i = 0, e = IvarNames.size() ; i < e ; i++) { 56820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 5693c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back( llvm::ConstantExpr::getGetElementPtr(IvarNames[i], 57020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Zeros, 2)); 5713c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back( llvm::ConstantExpr::getGetElementPtr(IvarTypes[i], 57220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Zeros, 2)); 57320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(IvarOffsets[i]); 57408e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson Ivars.push_back(llvm::ConstantStruct::get(ObjCIvarTy, Elements)); 57520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 57620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 57720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Array of method structures 57896e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *ObjCIvarArrayTy = llvm::ArrayType::get(ObjCIvarTy, 57920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IvarNames.size()); 58020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 58120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 58220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 5834a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Elements.push_back(llvm::ConstantInt::get(IntTy, (int)IvarNames.size())); 5847db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson Elements.push_back(llvm::ConstantArray::get(ObjCIvarArrayTy, Ivars)); 58520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Structure containing array and array count 58696e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::StructType *ObjCIvarListTy = llvm::StructType::get(IntTy, 58720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ObjCIvarArrayTy, 58820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 58920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 59020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an instance of the structure 59120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ObjCIvarListTy, Elements, ".objc_ivar_list"); 5920f984268b05edab2cc555a427c441baa9c252658Chris Lattner} 5930f984268b05edab2cc555a427c441baa9c252658Chris Lattner 59420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// Generate a class structure 59520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::GenerateClassStructure( 59620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MetaClass, 59720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SuperClass, 59820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov unsigned info, 599d002cc6fc5b72bf00e3b7b4571ccf0f23c789b4bChris Lattner const char *Name, 60020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Version, 60120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *InstanceSize, 60220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *IVars, 60320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Methods, 60420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Protocols) { 60520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Set up the class structure 60620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Note: Several of these are char*s when they should be ids. This is 60720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // because the runtime performs this translation on load. 60896e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::StructType *ClassTy = llvm::StructType::get( 60920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // class_pointer 61020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // super_class 61120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // name 61220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov LongTy, // version 61320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov LongTy, // info 61420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov LongTy, // instance_size 61520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IVars->getType(), // ivars 61620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods->getType(), // methods 61720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // These are all filled in by the runtime, so we pretend 61820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // dtable 61920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // subclass_list 62020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // sibling_class 62120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // protocols 62220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // gc_object_type 62320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 6244a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson llvm::Constant *Zero = llvm::ConstantInt::get(LongTy, 0); 62520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *NullP = 62603e205031b08669f05c41eed5b896fc94c4a12bbOwen Anderson llvm::ConstantPointerNull::get(PtrTy); 62720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Fill in the structure 62820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 6293c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getBitCast(MetaClass, PtrToInt8Ty)); 63020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(SuperClass); 631d002cc6fc5b72bf00e3b7b4571ccf0f23c789b4bChris Lattner Elements.push_back(MakeConstantString(Name, ".class_name")); 63220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(Zero); 6334a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Elements.push_back(llvm::ConstantInt::get(LongTy, info)); 63420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(InstanceSize); 63520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(IVars); 63620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(Methods); 63720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NullP); 63820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NullP); 63920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NullP); 6403c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getBitCast(Protocols, PtrTy)); 64120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NullP); 64220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an instance of the structure 6431565e0364b05d163640dd2b6feed43bae67df4fdChris Lattner return MakeGlobal(ClassTy, Elements, SymbolNameForClass(Name)); 64420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 64520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 64620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::GenerateProtocolMethodList( 64720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &MethodNames, 64820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &MethodTypes) { 64920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Get the method structure type. 65096e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::StructType *ObjCMethodDescTy = llvm::StructType::get( 65120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // Really a selector, but the runtime does the casting for us. 65220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 65320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 65420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Methods; 65520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 65620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (unsigned int i = 0, e = MethodTypes.size() ; i < e ; i++) { 65720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 6583c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getGetElementPtr(MethodNames[i], 65920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Zeros, 2)); 66020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back( 6613c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::ConstantExpr::getGetElementPtr(MethodTypes[i], Zeros, 2)); 66208e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson Methods.push_back(llvm::ConstantStruct::get(ObjCMethodDescTy, Elements)); 66320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 66496e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *ObjCMethodArrayTy = llvm::ArrayType::get(ObjCMethodDescTy, 66520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov MethodNames.size()); 6667db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson llvm::Constant *Array = llvm::ConstantArray::get(ObjCMethodArrayTy, 667bb1c8600218b3244340331165fc7cba7bf227655Mike Stump Methods); 66896e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::StructType *ObjCMethodDescListTy = llvm::StructType::get( 66920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IntTy, ObjCMethodArrayTy, NULL); 67020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.clear(); 6714a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Methods.push_back(llvm::ConstantInt::get(IntTy, MethodNames.size())); 67220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.push_back(Array); 67320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ObjCMethodDescListTy, Methods, ".objc_method_list"); 67420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 675bb1c8600218b3244340331165fc7cba7bf227655Mike Stump 67620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// Create the protocol list structure used in classes, categories and so on 67720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::GenerateProtocolList( 67820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<std::string> &Protocols) { 67996e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *ProtocolArrayTy = llvm::ArrayType::get(PtrToInt8Ty, 68020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Protocols.size()); 68196e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::StructType *ProtocolListTy = llvm::StructType::get( 68220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, //Should be a recurisve pointer, but it's always NULL here. 68320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov LongTy,//FIXME: Should be size_t 68420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ProtocolArrayTy, 68520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 68620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 68720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (const std::string *iter = Protocols.begin(), *endIter = Protocols.end(); 68820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter != endIter ; iter++) { 689f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::Constant *protocol = ExistingProtocols[*iter]; 690f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian if (!protocol) 691f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian protocol = GenerateEmptyProtocol(*iter); 6923c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::Constant *Ptr = llvm::ConstantExpr::getBitCast(protocol, 693a1cf15f4680e5cf39e72e28c5ea854fcba792e84Owen Anderson PtrToInt8Ty); 69420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(Ptr); 69520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 6967db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson llvm::Constant * ProtocolArray = llvm::ConstantArray::get(ProtocolArrayTy, 69720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements); 69820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 69920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 7004a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Elements.push_back(llvm::ConstantInt::get(LongTy, Protocols.size())); 70120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ProtocolArray); 70220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ProtocolListTy, Elements, ".objc_protocol_list"); 70320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 70420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 70545d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbarllvm::Value *CGObjCGNU::GenerateProtocolRef(CGBuilderTy &Builder, 706af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar const ObjCProtocolDecl *PD) { 707f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::Value *protocol = ExistingProtocols[PD->getNameAsString()]; 708f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian const llvm::Type *T = 709f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian CGM.getTypes().ConvertType(CGM.getContext().getObjCProtoType()); 71096e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson return Builder.CreateBitCast(protocol, llvm::PointerType::getUnqual(T)); 711f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian} 712f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian 713f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanianllvm::Constant *CGObjCGNU::GenerateEmptyProtocol( 714f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian const std::string &ProtocolName) { 715f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::SmallVector<std::string, 0> EmptyStringVector; 716f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::SmallVector<llvm::Constant*, 0> EmptyConstantVector; 717f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian 718f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::Constant *ProtocolList = GenerateProtocolList(EmptyStringVector); 719f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::Constant *InstanceMethodList = 720f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian GenerateProtocolMethodList(EmptyConstantVector, EmptyConstantVector); 721f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::Constant *ClassMethodList = 722f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian GenerateProtocolMethodList(EmptyConstantVector, EmptyConstantVector); 723f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian // Protocols are objects containing lists of the methods implemented and 724f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian // protocols adopted. 72596e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::StructType *ProtocolTy = llvm::StructType::get(IdTy, 726f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian PtrToInt8Ty, 727f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian ProtocolList->getType(), 728f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian InstanceMethodList->getType(), 729f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian ClassMethodList->getType(), 730f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian NULL); 731f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian std::vector<llvm::Constant*> Elements; 732f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian // The isa pointer must be set to a magic number so the runtime knows it's 733f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian // the correct layout. 7343c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getIntToPtr( 7354a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson llvm::ConstantInt::get(llvm::Type::Int32Ty, ProtocolVersion), IdTy)); 736f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian Elements.push_back(MakeConstantString(ProtocolName, ".objc_protocol_name")); 737f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian Elements.push_back(ProtocolList); 738f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian Elements.push_back(InstanceMethodList); 739f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian Elements.push_back(ClassMethodList); 740f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian return MakeGlobal(ProtocolTy, Elements, ".objc_protocol"); 74120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 74220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 743af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbarvoid CGObjCGNU::GenerateProtocol(const ObjCProtocolDecl *PD) { 744af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar ASTContext &Context = CGM.getContext(); 7458ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string ProtocolName = PD->getNameAsString(); 746af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar llvm::SmallVector<std::string, 16> Protocols; 747af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar for (ObjCProtocolDecl::protocol_iterator PI = PD->protocol_begin(), 748af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar E = PD->protocol_end(); PI != E; ++PI) 749d9d22dd9c94618490dbffb0e2caf222530ca39d3Chris Lattner Protocols.push_back((*PI)->getNameAsString()); 750af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> InstanceMethodNames; 751af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> InstanceMethodTypes; 75217945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis for (ObjCProtocolDecl::instmeth_iterator iter = PD->instmeth_begin(), 75317945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis E = PD->instmeth_end(); iter != E; iter++) { 754af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar std::string TypeStr; 755af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar Context.getObjCEncodingForMethodDecl(*iter, TypeStr); 756af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar InstanceMethodNames.push_back( 757077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner CGM.GetAddrOfConstantCString((*iter)->getSelector().getAsString())); 7586143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar InstanceMethodTypes.push_back(CGM.GetAddrOfConstantCString(TypeStr)); 759af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar } 760af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar // Collect information about class methods: 761af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> ClassMethodNames; 762af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> ClassMethodTypes; 7636ab3524f72a6e64aa04973fa9433b5559abb3525Douglas Gregor for (ObjCProtocolDecl::classmeth_iterator 76417945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = PD->classmeth_begin(), endIter = PD->classmeth_end(); 76517945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter != endIter ; iter++) { 766af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar std::string TypeStr; 767af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar Context.getObjCEncodingForMethodDecl((*iter),TypeStr); 768af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar ClassMethodNames.push_back( 769077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner CGM.GetAddrOfConstantCString((*iter)->getSelector().getAsString())); 7706143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar ClassMethodTypes.push_back(CGM.GetAddrOfConstantCString(TypeStr)); 771af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar } 77220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 77320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ProtocolList = GenerateProtocolList(Protocols); 77420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *InstanceMethodList = 77520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov GenerateProtocolMethodList(InstanceMethodNames, InstanceMethodTypes); 77620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ClassMethodList = 77720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov GenerateProtocolMethodList(ClassMethodNames, ClassMethodTypes); 77820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Protocols are objects containing lists of the methods implemented and 77920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // protocols adopted. 78096e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::StructType *ProtocolTy = llvm::StructType::get(IdTy, 78120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 78220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ProtocolList->getType(), 78320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov InstanceMethodList->getType(), 78420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ClassMethodList->getType(), 78520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 78620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 78720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // The isa pointer must be set to a magic number so the runtime knows it's 78820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // the correct layout. 7893c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getIntToPtr( 7904a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson llvm::ConstantInt::get(llvm::Type::Int32Ty, ProtocolVersion), IdTy)); 79120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(MakeConstantString(ProtocolName, ".objc_protocol_name")); 79220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ProtocolList); 79320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(InstanceMethodList); 79420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ClassMethodList); 79520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ExistingProtocols[ProtocolName] = 7963c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::ConstantExpr::getBitCast(MakeGlobal(ProtocolTy, Elements, 79720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ".objc_protocol"), IdTy); 79820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 79920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 8007ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbarvoid CGObjCGNU::GenerateCategory(const ObjCCategoryImplDecl *OCD) { 8018ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string ClassName = OCD->getClassInterface()->getNameAsString(); 8028ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string CategoryName = OCD->getNameAsString(); 8037ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about instance methods 8047ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<Selector, 16> InstanceMethodSels; 8057ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> InstanceMethodTypes; 806653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor for (ObjCCategoryImplDecl::instmeth_iterator 80717945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = OCD->instmeth_begin(), endIter = OCD->instmeth_end(); 808653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter != endIter ; iter++) { 8097ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar InstanceMethodSels.push_back((*iter)->getSelector()); 8107ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 8117ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar CGM.getContext().getObjCEncodingForMethodDecl(*iter,TypeStr); 8127ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar InstanceMethodTypes.push_back(CGM.GetAddrOfConstantCString(TypeStr)); 8137ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 8147ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 8157ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about class methods 8167ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<Selector, 16> ClassMethodSels; 8177ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> ClassMethodTypes; 818653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor for (ObjCCategoryImplDecl::classmeth_iterator 81917945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = OCD->classmeth_begin(), endIter = OCD->classmeth_end(); 820653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter != endIter ; iter++) { 8217ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar ClassMethodSels.push_back((*iter)->getSelector()); 8227ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 8237ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar CGM.getContext().getObjCEncodingForMethodDecl(*iter,TypeStr); 8247ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar ClassMethodTypes.push_back(CGM.GetAddrOfConstantCString(TypeStr)); 8257ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 8267ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 8277ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect the names of referenced protocols 8287ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<std::string, 16> Protocols; 8297ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar const ObjCInterfaceDecl *ClassDecl = OCD->getClassInterface(); 8307ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar const ObjCList<ObjCProtocolDecl> &Protos =ClassDecl->getReferencedProtocols(); 8317ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar for (ObjCList<ObjCProtocolDecl>::iterator I = Protos.begin(), 8327ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar E = Protos.end(); I != E; ++I) 833d9d22dd9c94618490dbffb0e2caf222530ca39d3Chris Lattner Protocols.push_back((*I)->getNameAsString()); 8347ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 83520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 83620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(MakeConstantString(CategoryName)); 83720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(MakeConstantString(ClassName)); 83820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Instance method list 8393c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getBitCast(GenerateMethodList( 840a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner ClassName, CategoryName, InstanceMethodSels, InstanceMethodTypes, 84120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov false), PtrTy)); 84220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Class method list 8433c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getBitCast(GenerateMethodList( 844a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner ClassName, CategoryName, ClassMethodSels, ClassMethodTypes, true), 84520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy)); 84620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Protocol list 8473c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getBitCast( 84820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov GenerateProtocolList(Protocols), PtrTy)); 8493c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Categories.push_back(llvm::ConstantExpr::getBitCast( 85096e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson MakeGlobal(llvm::StructType::get(PtrToInt8Ty, PtrToInt8Ty, PtrTy, 85120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, PtrTy, NULL), Elements), PtrTy)); 85220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 8537ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 8547ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbarvoid CGObjCGNU::GenerateClass(const ObjCImplementationDecl *OID) { 8557ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar ASTContext &Context = CGM.getContext(); 8567ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 8577ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Get the superclass name. 8587ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar const ObjCInterfaceDecl * SuperClassDecl = 8597ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar OID->getClassInterface()->getSuperClass(); 8608ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string SuperClassName; 8612a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner if (SuperClassDecl) { 8628ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner SuperClassName = SuperClassDecl->getNameAsString(); 8632a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner EmitClassRef(SuperClassName); 8642a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner } 8657ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 8667ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Get the class name 86709dc6660487fc2f4a4bb2032e30123d3e0da7230Chris Lattner ObjCInterfaceDecl *ClassDecl = 86809dc6660487fc2f4a4bb2032e30123d3e0da7230Chris Lattner const_cast<ObjCInterfaceDecl *>(OID->getClassInterface()); 8698ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string ClassName = ClassDecl->getNameAsString(); 8702a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner // Emit the symbol that is used to generate linker errors if this class is 8712a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner // referenced in other modules but not declared. 872c51db23f58bd887b16cf91554aa86c430a2496e7Fariborz Jahanian std::string classSymbolName = "__objc_class_name_" + ClassName; 873c51db23f58bd887b16cf91554aa86c430a2496e7Fariborz Jahanian if (llvm::GlobalVariable *symbol = 874c51db23f58bd887b16cf91554aa86c430a2496e7Fariborz Jahanian TheModule.getGlobalVariable(classSymbolName)) { 8754a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson symbol->setInitializer(llvm::ConstantInt::get(LongTy, 0)); 876c51db23f58bd887b16cf91554aa86c430a2496e7Fariborz Jahanian } else { 8771c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson new llvm::GlobalVariable(TheModule, LongTy, false, 8784a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson llvm::GlobalValue::ExternalLinkage, llvm::ConstantInt::get(LongTy, 0), 8791c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson classSymbolName); 880c51db23f58bd887b16cf91554aa86c430a2496e7Fariborz Jahanian } 8812a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner 8822bebbf0acee55404de4b8846713b64429e744e8fDaniel Dunbar // Get the size of instances. 8832bebbf0acee55404de4b8846713b64429e744e8fDaniel Dunbar int instanceSize = Context.getASTObjCImplementationLayout(OID).getSize() / 8; 8847ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 8857ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about instance variables. 8867ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> IvarNames; 8877ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> IvarTypes; 8887ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> IvarOffsets; 8899cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian 8909cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian int superInstanceSize = !SuperClassDecl ? 0 : 8919cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian Context.getASTObjCInterfaceLayout(SuperClassDecl).getSize() / 8; 8929cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // For non-fragile ivars, set the instance size to 0 - {the size of just this 8939cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // class}. The runtime will then set this to the correct value on load. 8949cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian if (CGM.getContext().getLangOptions().ObjCNonFragileABI) { 8959cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian instanceSize = 0 - (instanceSize - superInstanceSize); 8969cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 8977ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar for (ObjCInterfaceDecl::ivar_iterator iter = ClassDecl->ivar_begin(), 8987ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar endIter = ClassDecl->ivar_end() ; iter != endIter ; iter++) { 8997ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Store the name 900d9d22dd9c94618490dbffb0e2caf222530ca39d3Chris Lattner IvarNames.push_back(CGM.GetAddrOfConstantCString((*iter) 901d9d22dd9c94618490dbffb0e2caf222530ca39d3Chris Lattner ->getNameAsString())); 9027ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Get the type encoding for this ivar 9037ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 9040d504c1da852e58ff802545c823ecff3b6c654b8Daniel Dunbar Context.getObjCEncodingForType((*iter)->getType(), TypeStr); 9057ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar IvarTypes.push_back(CGM.GetAddrOfConstantCString(TypeStr)); 9067ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Get the offset 9079cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian uint64_t Offset; 9089cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian if (CGM.getContext().getLangOptions().ObjCNonFragileABI) { 9099cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian Offset = ComputeIvarBaseOffset(CGM, ClassDecl, *iter) - 9109cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian superInstanceSize; 9119cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian ObjCIvarOffsetVariable(ClassDecl, *iter); 9129cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } else { 9139cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian Offset = ComputeIvarBaseOffset(CGM, ClassDecl, *iter); 9149cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 9157ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar IvarOffsets.push_back( 9164a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson llvm::ConstantInt::get(llvm::Type::Int32Ty, Offset)); 9177ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 9187ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 9197ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about instance methods 9207ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<Selector, 16> InstanceMethodSels; 9217ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> InstanceMethodTypes; 922653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor for (ObjCImplementationDecl::instmeth_iterator 92317945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = OID->instmeth_begin(), endIter = OID->instmeth_end(); 924653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter != endIter ; iter++) { 9257ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar InstanceMethodSels.push_back((*iter)->getSelector()); 9267ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 9277ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar Context.getObjCEncodingForMethodDecl((*iter),TypeStr); 9287ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar InstanceMethodTypes.push_back(CGM.GetAddrOfConstantCString(TypeStr)); 9297ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 9301e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian for (ObjCImplDecl::propimpl_iterator 93117945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = OID->propimpl_begin(), endIter = OID->propimpl_end(); 9321e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian iter != endIter ; iter++) { 9331e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian ObjCPropertyDecl *property = (*iter)->getPropertyDecl(); 9341e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian if (ObjCMethodDecl *getter = property->getGetterMethodDecl()) { 9351e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian InstanceMethodSels.push_back(getter->getSelector()); 9361e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian std::string TypeStr; 9371e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian Context.getObjCEncodingForMethodDecl(getter,TypeStr); 9381e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian InstanceMethodTypes.push_back(CGM.GetAddrOfConstantCString(TypeStr)); 9391e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian } 9401e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian if (ObjCMethodDecl *setter = property->getSetterMethodDecl()) { 9411e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian InstanceMethodSels.push_back(setter->getSelector()); 9421e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian std::string TypeStr; 9431e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian Context.getObjCEncodingForMethodDecl(setter,TypeStr); 9441e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian InstanceMethodTypes.push_back(CGM.GetAddrOfConstantCString(TypeStr)); 9451e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian } 9461e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian } 9477ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 9487ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about class methods 9497ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<Selector, 16> ClassMethodSels; 9507ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> ClassMethodTypes; 951653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor for (ObjCImplementationDecl::classmeth_iterator 95217945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = OID->classmeth_begin(), endIter = OID->classmeth_end(); 953653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter != endIter ; iter++) { 9547ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar ClassMethodSels.push_back((*iter)->getSelector()); 9557ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 9567ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar Context.getObjCEncodingForMethodDecl((*iter),TypeStr); 9577ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar ClassMethodTypes.push_back(CGM.GetAddrOfConstantCString(TypeStr)); 9587ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 9597ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect the names of referenced protocols 9607ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<std::string, 16> Protocols; 9617ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar const ObjCList<ObjCProtocolDecl> &Protos =ClassDecl->getReferencedProtocols(); 9627ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar for (ObjCList<ObjCProtocolDecl>::iterator I = Protos.begin(), 9637ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar E = Protos.end(); I != E; ++I) 964d9d22dd9c94618490dbffb0e2caf222530ca39d3Chris Lattner Protocols.push_back((*I)->getNameAsString()); 9657ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 9667ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 9677ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 96820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Get the superclass pointer. 96920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SuperClass; 9708ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner if (!SuperClassName.empty()) { 97120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov SuperClass = MakeConstantString(SuperClassName, ".super_class_name"); 97220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } else { 97303e205031b08669f05c41eed5b896fc94c4a12bbOwen Anderson SuperClass = llvm::ConstantPointerNull::get(PtrToInt8Ty); 97420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 97520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Empty vector used to construct empty method lists 97620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::SmallVector<llvm::Constant*, 1> empty; 97720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Generate the method and instance variable lists 97820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MethodList = GenerateMethodList(ClassName, "", 979a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner InstanceMethodSels, InstanceMethodTypes, false); 98020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ClassMethodList = GenerateMethodList(ClassName, "", 981a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner ClassMethodSels, ClassMethodTypes, true); 98220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *IvarList = GenerateIvarList(IvarNames, IvarTypes, 98320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IvarOffsets); 98420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov //Generate metaclass for class methods 98520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MetaClassStruct = GenerateClassStructure(NULLPtr, 9861565e0364b05d163640dd2b6feed43bae67df4fdChris Lattner NULLPtr, 0x2L, /*name*/"", 0, Zeros[0], GenerateIvarList( 98720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov empty, empty, empty), ClassMethodList, NULLPtr); 9885efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar 98920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Generate the class structure 9908ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner llvm::Constant *ClassStruct = 9918ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner GenerateClassStructure(MetaClassStruct, SuperClass, 0x1L, 9928ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner ClassName.c_str(), 0, 9934a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson llvm::ConstantInt::get(LongTy, instanceSize), IvarList, 99420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov MethodList, GenerateProtocolList(Protocols)); 9955efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar 9965efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar // Resolve the class aliases, if they exist. 9975efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar if (ClassPtrAlias) { 9985efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar ClassPtrAlias->setAliasee( 9993c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::ConstantExpr::getBitCast(ClassStruct, IdTy)); 10005efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar ClassPtrAlias = 0; 10015efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } 10025efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar if (MetaClassPtrAlias) { 10035efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar MetaClassPtrAlias->setAliasee( 10043c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::ConstantExpr::getBitCast(MetaClassStruct, IdTy)); 10055efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar MetaClassPtrAlias = 0; 10065efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } 10075efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar 100820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Add class structure to list to be added to the symtab later 10093c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson ClassStruct = llvm::ConstantExpr::getBitCast(ClassStruct, PtrToInt8Ty); 101020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.push_back(ClassStruct); 101120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 101220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 1013c38e9affd4519ea199af22419c8c794973cc4b23Fariborz Jahanian 101420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Function *CGObjCGNU::ModuleInitFunction() { 101520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Only emit an ObjC load function if no Objective-C stuff has been called 101620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov if (Classes.empty() && Categories.empty() && ConstantStrings.empty() && 101720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ExistingProtocols.empty() && TypedSelectors.empty() && 10185f58b911304f7d114f929d1726a09cd1c828a5ddAnton Korobeynikov UntypedSelectors.empty()) 101920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return NULL; 10201b8956e1ce4c5770982d6e59edb16979b500677aEli Friedman 1021e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::StructType *SelStructTy = dyn_cast<llvm::StructType>( 1022e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner SelectorTy->getElementType()); 1023e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::Type *SelStructPtrTy = SelectorTy; 1024e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner bool isSelOpaque = false; 1025e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner if (SelStructTy == 0) { 102696e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson SelStructTy = llvm::StructType::get(PtrToInt8Ty, PtrToInt8Ty, NULL); 102796e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson SelStructPtrTy = llvm::PointerType::getUnqual(SelStructTy); 1028e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner isSelOpaque = true; 1029e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner } 1030e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner 10311b8956e1ce4c5770982d6e59edb16979b500677aEli Friedman // Name the ObjC types to make the IR a bit easier to read 1032e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner TheModule.addTypeName(".objc_selector", SelStructPtrTy); 10331b8956e1ce4c5770982d6e59edb16979b500677aEli Friedman TheModule.addTypeName(".objc_id", IdTy); 10341b8956e1ce4c5770982d6e59edb16979b500677aEli Friedman TheModule.addTypeName(".objc_imp", IMPTy); 10351b8956e1ce4c5770982d6e59edb16979b500677aEli Friedman 103620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 103771238f67c5df13eef19450d66b7a7ab28377192aChris Lattner llvm::Constant *Statics = NULLPtr; 103820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Generate statics list: 103971238f67c5df13eef19450d66b7a7ab28377192aChris Lattner if (ConstantStrings.size()) { 104096e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *StaticsArrayTy = llvm::ArrayType::get(PtrToInt8Ty, 104171238f67c5df13eef19450d66b7a7ab28377192aChris Lattner ConstantStrings.size() + 1); 104271238f67c5df13eef19450d66b7a7ab28377192aChris Lattner ConstantStrings.push_back(NULLPtr); 104371238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Elements.push_back(MakeConstantString("NSConstantString", 104471238f67c5df13eef19450d66b7a7ab28377192aChris Lattner ".objc_static_class_name")); 10457db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson Elements.push_back(llvm::ConstantArray::get(StaticsArrayTy, 104671238f67c5df13eef19450d66b7a7ab28377192aChris Lattner ConstantStrings)); 104771238f67c5df13eef19450d66b7a7ab28377192aChris Lattner llvm::StructType *StaticsListTy = 104896e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::StructType::get(PtrToInt8Ty, StaticsArrayTy, NULL); 1049a1cf15f4680e5cf39e72e28c5ea854fcba792e84Owen Anderson llvm::Type *StaticsListPtrTy = 105096e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(StaticsListTy); 105171238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Statics = MakeGlobal(StaticsListTy, Elements, ".objc_statics"); 1052a1cf15f4680e5cf39e72e28c5ea854fcba792e84Owen Anderson llvm::ArrayType *StaticsListArrayTy = 105396e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType::get(StaticsListPtrTy, 2); 105471238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Elements.clear(); 105571238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Elements.push_back(Statics); 1056c9c88b4159791c48e486ca94e3743b5979e2b7a6Owen Anderson Elements.push_back(llvm::Constant::getNullValue(StaticsListPtrTy)); 105771238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Statics = MakeGlobal(StaticsListArrayTy, Elements, ".objc_statics_ptr"); 10583c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Statics = llvm::ConstantExpr::getBitCast(Statics, PtrTy); 105971238f67c5df13eef19450d66b7a7ab28377192aChris Lattner } 106020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Array of classes, categories, and constant objects 106196e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *ClassListTy = llvm::ArrayType::get(PtrToInt8Ty, 106220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.size() + Categories.size() + 2); 106396e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::StructType *SymTabTy = llvm::StructType::get(LongTy, SelStructPtrTy, 1064630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner llvm::Type::Int16Ty, 1065630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner llvm::Type::Int16Ty, 1066630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner ClassListTy, NULL); 106720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 106820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 106920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Pointer to an array of selectors used in this module. 107020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Selectors; 107120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (std::map<TypedSelector, llvm::GlobalAlias*>::iterator 107220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter = TypedSelectors.begin(), iterEnd = TypedSelectors.end(); 107320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter != iterEnd ; ++iter) { 1074630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner Elements.push_back(MakeConstantString(iter->first.first, ".objc_sel_name")); 1075630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner Elements.push_back(MakeConstantString(iter->first.second, 1076630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner ".objc_sel_types")); 107708e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson Selectors.push_back(llvm::ConstantStruct::get(SelStructTy, Elements)); 107820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 107920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 108020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (llvm::StringMap<llvm::GlobalAlias*>::iterator 108120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter = UntypedSelectors.begin(), iterEnd = UntypedSelectors.end(); 1082630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner iter != iterEnd; ++iter) { 108320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back( 1084630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner MakeConstantString(iter->getKeyData(), ".objc_sel_name")); 108520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 108608e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson Selectors.push_back(llvm::ConstantStruct::get(SelStructTy, Elements)); 108720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 108820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 108920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 109020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 109108e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson Selectors.push_back(llvm::ConstantStruct::get(SelStructTy, Elements)); 109220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 109320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Number of static selectors 10944a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Elements.push_back(llvm::ConstantInt::get(LongTy, Selectors.size() )); 109520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SelectorList = MakeGlobal( 109696e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType::get(SelStructTy, Selectors.size()), Selectors, 109720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ".objc_selector_list"); 10983c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getBitCast(SelectorList, 1099e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner SelStructPtrTy)); 110020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 110120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Now that all of the static selectors exist, create pointers to them. 110220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov int index = 0; 110320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (std::map<TypedSelector, llvm::GlobalAlias*>::iterator 110420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter=TypedSelectors.begin(), iterEnd =TypedSelectors.end(); 110520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter != iterEnd; ++iter) { 110620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Idxs[] = {Zeros[0], 11074a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson llvm::ConstantInt::get(llvm::Type::Int32Ty, index++), Zeros[0]}; 11081c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson llvm::Constant *SelPtr = new llvm::GlobalVariable(TheModule, SelStructPtrTy, 11091c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson true, llvm::GlobalValue::InternalLinkage, 11103c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::ConstantExpr::getGetElementPtr(SelectorList, Idxs, 2), 11111c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson ".objc_sel_ptr"); 1112e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner // If selectors are defined as an opaque type, cast the pointer to this 1113e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner // type. 1114e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner if (isSelOpaque) { 11153c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson SelPtr = llvm::ConstantExpr::getBitCast(SelPtr, 111696e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(SelectorTy)); 1117e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner } 111820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov (*iter).second->setAliasee(SelPtr); 111920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 112020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (llvm::StringMap<llvm::GlobalAlias*>::iterator 112120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter=UntypedSelectors.begin(), iterEnd = UntypedSelectors.end(); 112220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter != iterEnd; iter++) { 112320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Idxs[] = {Zeros[0], 11244a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson llvm::ConstantInt::get(llvm::Type::Int32Ty, index++), Zeros[0]}; 1125bb1c8600218b3244340331165fc7cba7bf227655Mike Stump llvm::Constant *SelPtr = new llvm::GlobalVariable 1126bb1c8600218b3244340331165fc7cba7bf227655Mike Stump (TheModule, SelStructPtrTy, 1127bb1c8600218b3244340331165fc7cba7bf227655Mike Stump true, llvm::GlobalValue::InternalLinkage, 1128bb1c8600218b3244340331165fc7cba7bf227655Mike Stump llvm::ConstantExpr::getGetElementPtr(SelectorList, Idxs, 2), 1129bb1c8600218b3244340331165fc7cba7bf227655Mike Stump ".objc_sel_ptr"); 1130e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner // If selectors are defined as an opaque type, cast the pointer to this 1131e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner // type. 1132e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner if (isSelOpaque) { 11333c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson SelPtr = llvm::ConstantExpr::getBitCast(SelPtr, 113496e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(SelectorTy)); 1135e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner } 113620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov (*iter).second->setAliasee(SelPtr); 113720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 113820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Number of classes defined. 11394a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Elements.push_back(llvm::ConstantInt::get(llvm::Type::Int16Ty, 114020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.size())); 114120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Number of categories defined 11424a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Elements.push_back(llvm::ConstantInt::get(llvm::Type::Int16Ty, 114320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Categories.size())); 114420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an array of classes, then categories, then static object instances 114520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.insert(Classes.end(), Categories.begin(), Categories.end()); 114620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // NULL-terminated list of static object instances (mainly constant strings) 114720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.push_back(Statics); 114820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.push_back(NULLPtr); 11497db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson llvm::Constant *ClassList = llvm::ConstantArray::get(ClassListTy, Classes); 115020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ClassList); 115120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Construct the symbol table 115220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SymTab= MakeGlobal(SymTabTy, Elements); 115320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 115420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // The symbol table is contained in a module which has some version-checking 115520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // constants 115696e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::StructType * ModuleTy = llvm::StructType::get(LongTy, LongTy, 115796e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson PtrToInt8Ty, llvm::PointerType::getUnqual(SymTabTy), NULL); 115820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 115920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Runtime version used for compatibility checking. 11609cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian if (CGM.getContext().getLangOptions().ObjCNonFragileABI) { 11614a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Elements.push_back(llvm::ConstantInt::get(LongTy, 11629cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian NonFragileRuntimeVersion)); 11639cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } else { 11644a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Elements.push_back(llvm::ConstantInt::get(LongTy, RuntimeVersion)); 11659cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 116691a0b51438e5259a79d68d7450c453827beed9e2Fariborz Jahanian // sizeof(ModuleTy) 116791a0b51438e5259a79d68d7450c453827beed9e2Fariborz Jahanian llvm::TargetData td = llvm::TargetData::TargetData(&TheModule); 11684a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Elements.push_back(llvm::ConstantInt::get(LongTy, 1169a1cf15f4680e5cf39e72e28c5ea854fcba792e84Owen Anderson td.getTypeSizeInBits(ModuleTy)/8)); 117020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov //FIXME: Should be the path to the file where this module was declared 117120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 117220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(SymTab); 117320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Value *Module = MakeGlobal(ModuleTy, Elements); 117420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 117520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create the load function calling the runtime entry point with the module 117620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // structure 117720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Function * LoadFunction = llvm::Function::Create( 117896e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::FunctionType::get(llvm::Type::VoidTy, false), 117920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::GlobalValue::InternalLinkage, ".objc_load_function", 118020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov &TheModule); 118120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::BasicBlock *EntryBB = llvm::BasicBlock::Create("entry", LoadFunction); 1182a1cf15f4680e5cf39e72e28c5ea854fcba792e84Owen Anderson CGBuilderTy Builder(VMContext); 118320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Builder.SetInsertPoint(EntryBB); 118426c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian 118526c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian std::vector<const llvm::Type*> Params(1, 118696e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(ModuleTy)); 118796e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::Value *Register = CGM.CreateRuntimeFunction(llvm::FunctionType::get( 118826c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian llvm::Type::VoidTy, Params, true), "__objc_exec_class"); 118920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Builder.CreateCall(Register, Module); 119020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Builder.CreateRetVoid(); 11919cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian 119220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return LoadFunction; 119320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 11947ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 1195679a502d462ef819e6175b58e255ca3f3391e7cfFariborz Jahanianllvm::Function *CGObjCGNU::GenerateMethod(const ObjCMethodDecl *OMD, 1196679a502d462ef819e6175b58e255ca3f3391e7cfFariborz Jahanian const ObjCContainerDecl *CD) { 11977ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar const ObjCCategoryImplDecl *OCD = 11983e0a540b6d846178857289ec0eb8470a278d11a3Steve Naroff dyn_cast<ObjCCategoryImplDecl>(OMD->getDeclContext()); 1199077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner std::string CategoryName = OCD ? OCD->getNameAsString() : ""; 1200077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner std::string ClassName = OMD->getClassInterface()->getNameAsString(); 1201077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner std::string MethodName = OMD->getSelector().getAsString(); 1202f8d49f64ef6ab7e632717a31631fc289aab69428Douglas Gregor bool isClassMethod = !OMD->isInstanceMethod(); 1203391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner 1204541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel Dunbar CodeGenTypes &Types = CGM.getTypes(); 120545c25ba11cbf8c9a461def5b03f6ee9481e06769Daniel Dunbar const llvm::FunctionType *MethodTy = 1206541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel Dunbar Types.GetFunctionType(Types.getFunctionInfo(OMD), OMD->isVariadic()); 120720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::string FunctionName = SymbolNameForMethod(ClassName, CategoryName, 120820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov MethodName, isClassMethod); 120920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 1210984d0b414bc76d3530b9bc55a5a55834ba76c607Gabor Greif llvm::Function *Method = llvm::Function::Create(MethodTy, 1211391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner llvm::GlobalValue::InternalLinkage, 121220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov FunctionName, 1213391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner &TheModule); 1214391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner return Method; 1215391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner} 1216391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner 121749f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbarllvm::Function *CGObjCGNU::GetPropertyGetFunction() { 1218cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian std::vector<const llvm::Type*> Params; 1219cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian const llvm::Type *BoolTy = 1220cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian CGM.getTypes().ConvertType(CGM.getContext().BoolTy); 1221cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian Params.push_back(IdTy); 1222cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian Params.push_back(SelectorTy); 1223cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian // FIXME: Using LongTy for ptrdiff_t is probably broken on Win64 1224cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian Params.push_back(LongTy); 1225cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian Params.push_back(BoolTy); 1226cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian // void objc_getProperty (id, SEL, ptrdiff_t, bool) 1227cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian const llvm::FunctionType *FTy = 122896e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::FunctionType::get(IdTy, Params, false); 1229cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian return cast<llvm::Function>(CGM.CreateRuntimeFunction(FTy, 1230cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian "objc_getProperty")); 123149f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar} 123249f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar 123349f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbarllvm::Function *CGObjCGNU::GetPropertySetFunction() { 1234cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian std::vector<const llvm::Type*> Params; 1235cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian const llvm::Type *BoolTy = 1236cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian CGM.getTypes().ConvertType(CGM.getContext().BoolTy); 1237cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian Params.push_back(IdTy); 1238cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian Params.push_back(SelectorTy); 1239cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian // FIXME: Using LongTy for ptrdiff_t is probably broken on Win64 1240cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian Params.push_back(LongTy); 1241cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian Params.push_back(IdTy); 1242cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian Params.push_back(BoolTy); 1243cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian Params.push_back(BoolTy); 1244cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian // void objc_setProperty (id, SEL, ptrdiff_t, id, bool, bool) 1245cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian const llvm::FunctionType *FTy = 124696e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::FunctionType::get(llvm::Type::VoidTy, Params, false); 1247cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian return cast<llvm::Function>(CGM.CreateRuntimeFunction(FTy, 1248cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian "objc_setProperty")); 124949f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar} 125049f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar 1251309a4368cd299cff30ab22709e2b772cf8059e45Daniel Dunbarllvm::Constant *CGObjCGNU::EnumerationMutationFunction() { 1252309a4368cd299cff30ab22709e2b772cf8059e45Daniel Dunbar CodeGen::CodeGenTypes &Types = CGM.getTypes(); 1253309a4368cd299cff30ab22709e2b772cf8059e45Daniel Dunbar ASTContext &Ctx = CGM.getContext(); 1254309a4368cd299cff30ab22709e2b772cf8059e45Daniel Dunbar // void objc_enumerationMutation (id) 1255309a4368cd299cff30ab22709e2b772cf8059e45Daniel Dunbar llvm::SmallVector<QualType,16> Params; 1256309a4368cd299cff30ab22709e2b772cf8059e45Daniel Dunbar Params.push_back(Ctx.getObjCIdType()); 1257309a4368cd299cff30ab22709e2b772cf8059e45Daniel Dunbar const llvm::FunctionType *FTy = 1258309a4368cd299cff30ab22709e2b772cf8059e45Daniel Dunbar Types.GetFunctionType(Types.getFunctionInfo(Ctx.VoidTy, Params), false); 1259309a4368cd299cff30ab22709e2b772cf8059e45Daniel Dunbar return CGM.CreateRuntimeFunction(FTy, "objc_enumerationMutation"); 12602abd89c039e835e84519a4cd8a7495899a70153dAnders Carlsson} 12612abd89c039e835e84519a4cd8a7495899a70153dAnders Carlsson 1262bd71be4683c195260d5245118b1e13e6b2e20504Fariborz Jahanianvoid CGObjCGNU::EmitTryOrSynchronizedStmt(CodeGen::CodeGenFunction &CGF, 1263bd71be4683c195260d5245118b1e13e6b2e20504Fariborz Jahanian const Stmt &S) { 12645dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Pointer to the personality function 12655dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Constant *Personality = 126696e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson CGM.CreateRuntimeFunction(llvm::FunctionType::get(llvm::Type::Int32Ty, 1267b59761b2530bf54926bf67de11956f3820ac38d9Chris Lattner true), 12685dc0867af17b3bd6f567897433853b2b4767446cChris Lattner "__gnu_objc_personality_v0"); 12693c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Personality = llvm::ConstantExpr::getBitCast(Personality, PtrTy); 12705dc0867af17b3bd6f567897433853b2b4767446cChris Lattner std::vector<const llvm::Type*> Params; 12715dc0867af17b3bd6f567897433853b2b4767446cChris Lattner Params.push_back(PtrTy); 12725dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Value *RethrowFn = 127396e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson CGM.CreateRuntimeFunction(llvm::FunctionType::get(llvm::Type::VoidTy, 12745dc0867af17b3bd6f567897433853b2b4767446cChris Lattner Params, false), "_Unwind_Resume_or_Rethrow"); 12755dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 12765dc0867af17b3bd6f567897433853b2b4767446cChris Lattner bool isTry = isa<ObjCAtTryStmt>(S); 12775dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *TryBlock = CGF.createBasicBlock("try"); 12785dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *PrevLandingPad = CGF.getInvokeDest(); 12795dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *TryHandler = CGF.createBasicBlock("try.handler"); 1280d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner llvm::BasicBlock *CatchInCatch = CGF.createBasicBlock("catch.rethrow"); 12815dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *FinallyBlock = CGF.createBasicBlock("finally"); 12825dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *FinallyRethrow = CGF.createBasicBlock("finally.throw"); 12835dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *FinallyEnd = CGF.createBasicBlock("finally.end"); 12845dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 12855dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // GNU runtime does not currently support @synchronized() 12865dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (!isTry) { 1287d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner std::vector<const llvm::Type*> Args(1, IdTy); 1288d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner llvm::FunctionType *FTy = 128996e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::FunctionType::get(llvm::Type::VoidTy, Args, false); 1290d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner llvm::Value *SyncEnter = CGM.CreateRuntimeFunction(FTy, "objc_sync_enter"); 1291d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner llvm::Value *SyncArg = 1292d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.EmitScalarExpr(cast<ObjCAtSynchronizedStmt>(S).getSynchExpr()); 1293d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner SyncArg = CGF.Builder.CreateBitCast(SyncArg, IdTy); 1294d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.Builder.CreateCall(SyncEnter, SyncArg); 12955dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 12965dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 1297d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner 12985dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Push an EH context entry, used for handling rethrows and jumps 12995dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // through finally. 13005dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.PushCleanupBlock(FinallyBlock); 13015dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 13025dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Emit the statements in the @try {} block 13035dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.setInvokeDest(TryHandler); 13045dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 13055dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(TryBlock); 13065dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitStmt(isTry ? cast<ObjCAtTryStmt>(S).getTryBody() 13075dc0867af17b3bd6f567897433853b2b4767446cChris Lattner : cast<ObjCAtSynchronizedStmt>(S).getSynchBody()); 13085dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 13095dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Jump to @finally if there is no exception 13105dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBranchThroughCleanup(FinallyEnd); 13115dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 13125dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Emit the handlers 13135dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(TryHandler); 13145dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 1315bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner // Get the correct versions of the exception handling intrinsics 1316bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner llvm::TargetData td = llvm::TargetData::TargetData(&TheModule); 1317bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner int PointerWidth = td.getTypeSizeInBits(PtrTy); 1318bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner assert((PointerWidth == 32 || PointerWidth == 64) && 1319bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner "Can't yet handle exceptions if pointers are not 32 or 64 bits"); 13205dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Value *llvm_eh_exception = 13215dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.CGM.getIntrinsic(llvm::Intrinsic::eh_exception); 1322bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner llvm::Value *llvm_eh_selector = PointerWidth == 32 ? 1323bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner CGF.CGM.getIntrinsic(llvm::Intrinsic::eh_selector_i32) : 1324bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner CGF.CGM.getIntrinsic(llvm::Intrinsic::eh_selector_i64); 1325bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner llvm::Value *llvm_eh_typeid_for = PointerWidth == 32 ? 1326bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner CGF.CGM.getIntrinsic(llvm::Intrinsic::eh_typeid_for_i32) : 1327bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner CGF.CGM.getIntrinsic(llvm::Intrinsic::eh_typeid_for_i64); 13285dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 13295dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Exception object 13305dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Value *Exc = CGF.Builder.CreateCall(llvm_eh_exception, "exc"); 13315dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Value *RethrowPtr = CGF.CreateTempAlloca(Exc->getType(), "_rethrow"); 13325dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 13335dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::SmallVector<llvm::Value*, 8> ESelArgs; 13345dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::SmallVector<std::pair<const ParmVarDecl*, const Stmt*>, 8> Handlers; 13355dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 13365dc0867af17b3bd6f567897433853b2b4767446cChris Lattner ESelArgs.push_back(Exc); 13375dc0867af17b3bd6f567897433853b2b4767446cChris Lattner ESelArgs.push_back(Personality); 13385dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 13395dc0867af17b3bd6f567897433853b2b4767446cChris Lattner bool HasCatchAll = false; 13405dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Only @try blocks are allowed @catch blocks, but both can have @finally 13415dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (isTry) { 13425dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (const ObjCAtCatchStmt* CatchStmt = 13435dc0867af17b3bd6f567897433853b2b4767446cChris Lattner cast<ObjCAtTryStmt>(S).getCatchStmts()) { 1344d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.setInvokeDest(CatchInCatch); 13455dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 13465dc0867af17b3bd6f567897433853b2b4767446cChris Lattner for (; CatchStmt; CatchStmt = CatchStmt->getNextCatchStmt()) { 13475dc0867af17b3bd6f567897433853b2b4767446cChris Lattner const ParmVarDecl *CatchDecl = CatchStmt->getCatchParamDecl(); 1348bb1c8600218b3244340331165fc7cba7bf227655Mike Stump Handlers.push_back(std::make_pair(CatchDecl, 1349bb1c8600218b3244340331165fc7cba7bf227655Mike Stump CatchStmt->getCatchBody())); 13505dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 13515dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // @catch() and @catch(id) both catch any ObjC exception 135214108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff if (!CatchDecl || CatchDecl->getType()->isObjCIdType() 13535dc0867af17b3bd6f567897433853b2b4767446cChris Lattner || CatchDecl->getType()->isObjCQualifiedIdType()) { 13545dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Use i8* null here to signal this is a catch all, not a cleanup. 13555dc0867af17b3bd6f567897433853b2b4767446cChris Lattner ESelArgs.push_back(NULLPtr); 13565dc0867af17b3bd6f567897433853b2b4767446cChris Lattner HasCatchAll = true; 13575dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // No further catches after this one will ever by reached 13585dc0867af17b3bd6f567897433853b2b4767446cChris Lattner break; 13595dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 13605dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 13615dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // All other types should be Objective-C interface pointer types. 136214108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff const ObjCObjectPointerType *OPT = 136314108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff CatchDecl->getType()->getAsObjCObjectPointerType(); 136414108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff assert(OPT && "Invalid @catch type."); 13655dc0867af17b3bd6f567897433853b2b4767446cChris Lattner const ObjCInterfaceType *IT = 136614108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff OPT->getPointeeType()->getAsObjCInterfaceType(); 13675dc0867af17b3bd6f567897433853b2b4767446cChris Lattner assert(IT && "Invalid @catch type."); 1368bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner llvm::Value *EHType = 1369bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner MakeConstantString(IT->getDecl()->getNameAsString()); 13705dc0867af17b3bd6f567897433853b2b4767446cChris Lattner ESelArgs.push_back(EHType); 13715dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 13725dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 13735dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 13745dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 13755dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // We use a cleanup unless there was already a catch all. 13765dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (!HasCatchAll) { 13774a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson ESelArgs.push_back(llvm::ConstantInt::get(llvm::Type::Int32Ty, 0)); 13785dc0867af17b3bd6f567897433853b2b4767446cChris Lattner Handlers.push_back(std::make_pair((const ParmVarDecl*) 0, (const Stmt*) 0)); 13795dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 13805dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 13815dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Find which handler was matched. 1382bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner llvm::Value *ESelector = CGF.Builder.CreateCall(llvm_eh_selector, 13835dc0867af17b3bd6f567897433853b2b4767446cChris Lattner ESelArgs.begin(), ESelArgs.end(), "selector"); 13845dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 13855dc0867af17b3bd6f567897433853b2b4767446cChris Lattner for (unsigned i = 0, e = Handlers.size(); i != e; ++i) { 13865dc0867af17b3bd6f567897433853b2b4767446cChris Lattner const ParmVarDecl *CatchParam = Handlers[i].first; 13875dc0867af17b3bd6f567897433853b2b4767446cChris Lattner const Stmt *CatchBody = Handlers[i].second; 13885dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 13895dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *Next = 0; 13905dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 13915dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // The last handler always matches. 13925dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (i + 1 != e) { 13935dc0867af17b3bd6f567897433853b2b4767446cChris Lattner assert(CatchParam && "Only last handler can be a catch all."); 13945dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 13955dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Test whether this block matches the type for the selector and branch 13965dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // to Match if it does, or to the next BB if it doesn't. 13975dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *Match = CGF.createBasicBlock("match"); 13985dc0867af17b3bd6f567897433853b2b4767446cChris Lattner Next = CGF.createBasicBlock("catch.next"); 1399bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner llvm::Value *Id = CGF.Builder.CreateCall(llvm_eh_typeid_for, 14005dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateBitCast(ESelArgs[i+2], PtrTy)); 14015dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateCondBr(CGF.Builder.CreateICmpEQ(ESelector, Id), Match, 14025dc0867af17b3bd6f567897433853b2b4767446cChris Lattner Next); 14035dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 14045dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(Match); 14055dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 14065dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 14075dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (CatchBody) { 14085dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Value *ExcObject = CGF.Builder.CreateBitCast(Exc, 14095dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.ConvertType(CatchParam->getType())); 14105dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 14115dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Bind the catch parameter if it exists. 14125dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (CatchParam) { 14135dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // CatchParam is a ParmVarDecl because of the grammar 14145dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // construction used to handle this, but for codegen purposes 14155dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // we treat this as a local decl. 14165dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitLocalBlockVarDecl(*CatchParam); 14175dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateStore(ExcObject, CGF.GetAddrOfLocalVar(CatchParam)); 14185dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 14195dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 14205dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.ObjCEHValueStack.push_back(ExcObject); 14215dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitStmt(CatchBody); 14225dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.ObjCEHValueStack.pop_back(); 14235dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 14245dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBranchThroughCleanup(FinallyEnd); 14255dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 14265dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (Next) 14275dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(Next); 14285dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } else { 14295dc0867af17b3bd6f567897433853b2b4767446cChris Lattner assert(!Next && "catchup should be last handler."); 14305dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 14315dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateStore(Exc, RethrowPtr); 14325dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBranchThroughCleanup(FinallyRethrow); 14335dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 14345dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 1435d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner // The @finally block is a secondary landing pad for any exceptions thrown in 1436d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner // @catch() blocks 1437d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.EmitBlock(CatchInCatch); 1438d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner Exc = CGF.Builder.CreateCall(llvm_eh_exception, "exc"); 1439d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner ESelArgs.clear(); 1440d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner ESelArgs.push_back(Exc); 1441d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner ESelArgs.push_back(Personality); 14424a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson ESelArgs.push_back(llvm::ConstantInt::get(llvm::Type::Int32Ty, 0)); 1443d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.Builder.CreateCall(llvm_eh_selector, ESelArgs.begin(), ESelArgs.end(), 1444d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner "selector"); 1445d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.Builder.CreateCall(llvm_eh_typeid_for, 1446d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.Builder.CreateIntToPtr(ESelArgs[2], PtrTy)); 1447d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.Builder.CreateStore(Exc, RethrowPtr); 1448d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.EmitBranchThroughCleanup(FinallyRethrow); 1449d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner 14505dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CodeGenFunction::CleanupBlockInfo Info = CGF.PopCleanupBlock(); 14515dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 14525dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.setInvokeDest(PrevLandingPad); 14535dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 14545dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(FinallyBlock); 14555dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 1456d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner 14575dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (isTry) { 14585dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (const ObjCAtFinallyStmt* FinallyStmt = 14595dc0867af17b3bd6f567897433853b2b4767446cChris Lattner cast<ObjCAtTryStmt>(S).getFinallyStmt()) 14605dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitStmt(FinallyStmt->getFinallyBody()); 14615dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } else { 1462d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner // Emit 'objc_sync_exit(expr)' as finally's sole statement for 14635dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // @synchronized. 1464d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner std::vector<const llvm::Type*> Args(1, IdTy); 1465d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner llvm::FunctionType *FTy = 146696e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::FunctionType::get(llvm::Type::VoidTy, Args, false); 1467d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner llvm::Value *SyncExit = CGM.CreateRuntimeFunction(FTy, "objc_sync_exit"); 1468d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner llvm::Value *SyncArg = 1469d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.EmitScalarExpr(cast<ObjCAtSynchronizedStmt>(S).getSynchExpr()); 1470d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner SyncArg = CGF.Builder.CreateBitCast(SyncArg, IdTy); 1471d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.Builder.CreateCall(SyncExit, SyncArg); 14725dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 14735dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 14745dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (Info.SwitchBlock) 14755dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(Info.SwitchBlock); 14765dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (Info.EndBlock) 14775dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(Info.EndBlock); 14785dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 14795dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Branch around the rethrow code. 14805dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBranch(FinallyEnd); 14815dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 14825dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(FinallyRethrow); 14835dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateCall(RethrowFn, CGF.Builder.CreateLoad(RethrowPtr)); 14845dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateUnreachable(); 14855dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 14865dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(FinallyEnd); 14875dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 148864d5d6c5903157c521af496479d06dc26032d718Anders Carlsson} 148964d5d6c5903157c521af496479d06dc26032d718Anders Carlsson 149064d5d6c5903157c521af496479d06dc26032d718Anders Carlssonvoid CGObjCGNU::EmitThrowStmt(CodeGen::CodeGenFunction &CGF, 149149f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar const ObjCAtThrowStmt &S) { 14925dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Value *ExceptionAsObject; 14935dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 14945dc0867af17b3bd6f567897433853b2b4767446cChris Lattner std::vector<const llvm::Type*> Args(1, IdTy); 14955dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::FunctionType *FTy = 149696e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::FunctionType::get(llvm::Type::VoidTy, Args, false); 14975dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Value *ThrowFn = 14985dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGM.CreateRuntimeFunction(FTy, "objc_exception_throw"); 14995dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 15005dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (const Expr *ThrowExpr = S.getThrowExpr()) { 15015dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Value *Exception = CGF.EmitScalarExpr(ThrowExpr); 15021e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian ExceptionAsObject = Exception; 15035dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } else { 15045dc0867af17b3bd6f567897433853b2b4767446cChris Lattner assert((!CGF.ObjCEHValueStack.empty() && CGF.ObjCEHValueStack.back()) && 15055dc0867af17b3bd6f567897433853b2b4767446cChris Lattner "Unexpected rethrow outside @catch block."); 15065dc0867af17b3bd6f567897433853b2b4767446cChris Lattner ExceptionAsObject = CGF.ObjCEHValueStack.back(); 15075dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 15081e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian ExceptionAsObject = 15091e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian CGF.Builder.CreateBitCast(ExceptionAsObject, IdTy, "tmp"); 15105dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 15115dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Note: This may have to be an invoke, if we want to support constructs like: 15125dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // @try { 15135dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // @throw(obj); 15145dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // } 15155dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // @catch(id) ... 15165dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // 15175dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // This is effectively turning @throw into an incredibly-expensive goto, but 15185dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // it may happen as a result of inlining followed by missed optimizations, or 15195dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // as a result of stupidity. 15205dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *UnwindBB = CGF.getInvokeDest(); 15215dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (!UnwindBB) { 15225dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateCall(ThrowFn, ExceptionAsObject); 15235dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateUnreachable(); 15245dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } else { 15255dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateInvoke(ThrowFn, UnwindBB, UnwindBB, &ExceptionAsObject, 15265dc0867af17b3bd6f567897433853b2b4767446cChris Lattner &ExceptionAsObject+1); 15275dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 15285dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Clear the insertion point to indicate we are in unreachable code. 15295dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.ClearInsertionPoint(); 153064d5d6c5903157c521af496479d06dc26032d718Anders Carlsson} 153164d5d6c5903157c521af496479d06dc26032d718Anders Carlsson 15323e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanianllvm::Value * CGObjCGNU::EmitObjCWeakRead(CodeGen::CodeGenFunction &CGF, 15336dc2317b59cb1180a59f6c283d96b7a5dfeb5307Fariborz Jahanian llvm::Value *AddrWeakObj) 15346dc2317b59cb1180a59f6c283d96b7a5dfeb5307Fariborz Jahanian{ 15356dc2317b59cb1180a59f6c283d96b7a5dfeb5307Fariborz Jahanian return 0; 15366dc2317b59cb1180a59f6c283d96b7a5dfeb5307Fariborz Jahanian} 15376dc2317b59cb1180a59f6c283d96b7a5dfeb5307Fariborz Jahanian 15383e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanianvoid CGObjCGNU::EmitObjCWeakAssign(CodeGen::CodeGenFunction &CGF, 15393e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian llvm::Value *src, llvm::Value *dst) 15403e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian{ 15413e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian return; 15423e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian} 15433e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian 154458626500527695865683d1d65053743de8770b60Fariborz Jahanianvoid CGObjCGNU::EmitObjCGlobalAssign(CodeGen::CodeGenFunction &CGF, 154558626500527695865683d1d65053743de8770b60Fariborz Jahanian llvm::Value *src, llvm::Value *dst) 154658626500527695865683d1d65053743de8770b60Fariborz Jahanian{ 154758626500527695865683d1d65053743de8770b60Fariborz Jahanian return; 154858626500527695865683d1d65053743de8770b60Fariborz Jahanian} 154958626500527695865683d1d65053743de8770b60Fariborz Jahanian 15507eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanianvoid CGObjCGNU::EmitObjCIvarAssign(CodeGen::CodeGenFunction &CGF, 15517eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanian llvm::Value *src, llvm::Value *dst) 15527eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanian{ 15537eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanian return; 15547eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanian} 15557eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanian 155658626500527695865683d1d65053743de8770b60Fariborz Jahanianvoid CGObjCGNU::EmitObjCStrongCastAssign(CodeGen::CodeGenFunction &CGF, 155758626500527695865683d1d65053743de8770b60Fariborz Jahanian llvm::Value *src, llvm::Value *dst) 155858626500527695865683d1d65053743de8770b60Fariborz Jahanian{ 155958626500527695865683d1d65053743de8770b60Fariborz Jahanian return; 156058626500527695865683d1d65053743de8770b60Fariborz Jahanian} 156158626500527695865683d1d65053743de8770b60Fariborz Jahanian 1562082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanianvoid CGObjCGNU::EmitGCMemmoveCollectable(CodeGen::CodeGenFunction &CGF, 1563082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian llvm::Value *DestPtr, 1564082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian llvm::Value *SrcPtr, 1565082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian unsigned long size) { 1566082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian return; 1567082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian} 1568082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian 15699cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanianllvm::GlobalVariable *CGObjCGNU::ObjCIvarOffsetVariable( 15709cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCInterfaceDecl *ID, 15719cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCIvarDecl *Ivar) { 15729cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const std::string Name = "__objc_ivar_offset_" + ID->getNameAsString() 15739cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian + '.' + Ivar->getNameAsString(); 15749cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // Emit the variable and initialize it with what we think the correct value 15759cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // is. This allows code compiled with non-fragile ivars to work correctly 15769cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // when linked against code which isn't (most of the time). 15779cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian llvm::GlobalVariable *IvarOffsetGV = CGM.getModule().getGlobalVariable(Name); 15789cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian if (!IvarOffsetGV) { 15799cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian uint64_t Offset = ComputeIvarBaseOffset(CGM, ID, Ivar); 15809cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian llvm::ConstantInt *OffsetGuess = 15814a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson llvm::ConstantInt::get(LongTy, Offset, "ivar"); 15821c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson IvarOffsetGV = new llvm::GlobalVariable(TheModule, LongTy, false, 15831c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson llvm::GlobalValue::CommonLinkage, OffsetGuess, Name); 15849cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 15859cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian return IvarOffsetGV; 15869cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian} 15879cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian 1588598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz JahanianLValue CGObjCGNU::EmitObjCValueForIvar(CodeGen::CodeGenFunction &CGF, 1589598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian QualType ObjectTy, 1590598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian llvm::Value *BaseValue, 1591598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian const ObjCIvarDecl *Ivar, 1592598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian unsigned CVRQualifiers) { 1593525c9b7baeeff022127cd1b167579f3bda73b3edDaniel Dunbar const ObjCInterfaceDecl *ID = ObjectTy->getAsObjCInterfaceType()->getDecl(); 15949777687562c338601c2f17906e65e1c1a0aad96fDaniel Dunbar return EmitValueForIvarAtOffset(CGF, ID, BaseValue, Ivar, CVRQualifiers, 15959777687562c338601c2f17906e65e1c1a0aad96fDaniel Dunbar EmitIvarOffset(CGF, ID, Ivar)); 15960bb20361a321593887f067515dd04cf109f4c74aFariborz Jahanian} 1597bb1c8600218b3244340331165fc7cba7bf227655Mike Stump 15989cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanianstatic const ObjCInterfaceDecl *FindIvarInterface(ASTContext &Context, 15999cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCInterfaceDecl *OID, 16009cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCIvarDecl *OIVD) { 16019cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian llvm::SmallVector<ObjCIvarDecl*, 16> Ivars; 16028e6ac1d80055fa37b9b84029c7e751624ba7f84cFariborz Jahanian Context.ShallowCollectObjCIvars(OID, Ivars); 16039cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian for (unsigned k = 0, e = Ivars.size(); k != e; ++k) { 16049cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian if (OIVD == Ivars[k]) 16059cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian return OID; 16069cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 16079cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian 16089cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // Otherwise check in the super class. 16099cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian if (const ObjCInterfaceDecl *Super = OID->getSuperClass()) 16109cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian return FindIvarInterface(Context, Super, OIVD); 16119cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian 16129cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian return 0; 16139cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian} 16140bb20361a321593887f067515dd04cf109f4c74aFariborz Jahanian 1615f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanianllvm::Value *CGObjCGNU::EmitIvarOffset(CodeGen::CodeGenFunction &CGF, 16162a03192a02dbf4fdff438d1e658356bde871aba4Daniel Dunbar const ObjCInterfaceDecl *Interface, 1617f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian const ObjCIvarDecl *Ivar) { 1618bb1c8600218b3244340331165fc7cba7bf227655Mike Stump if (CGF.getContext().getLangOptions().ObjCNonFragileABI) { 16199cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian Interface = FindIvarInterface(CGM.getContext(), Interface, Ivar); 16209cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian return CGF.Builder.CreateLoad(ObjCIvarOffsetVariable(Interface, Ivar), 1621bb1c8600218b3244340331165fc7cba7bf227655Mike Stump false, "ivar"); 16229cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 16239777687562c338601c2f17906e65e1c1a0aad96fDaniel Dunbar uint64_t Offset = ComputeIvarBaseOffset(CGF.CGM, Interface, Ivar); 16244a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson return llvm::ConstantInt::get(LongTy, Offset, "ivar"); 1625f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian} 1626f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian 1627bb1c8600218b3244340331165fc7cba7bf227655Mike StumpCodeGen::CGObjCRuntime * 1628bb1c8600218b3244340331165fc7cba7bf227655Mike StumpCodeGen::CreateGNUObjCRuntime(CodeGen::CodeGenModule &CGM) { 1629dce1406f1c1f572cfd61c494546572d63461c741Chris Lattner return new CGObjCGNU(CGM); 16300f984268b05edab2cc555a427c441baa9c252658Chris Lattner} 1631