CGObjCGNU.cpp revision 3d598a5ab3c8aabce0a03a2f5dea65eee643e5ac
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" 223d598a5ab3c8aabce0a03a2f5dea65eee643e5acAnders Carlsson#include "clang/AST/ASTRecordLayout.h" 23e91593ef084479340582b2ba177b44be50a717b7Daniel Dunbar#include "clang/AST/Decl.h" 24af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar#include "clang/AST/DeclObjC.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; 7320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovprivate: 7420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateIvarList( 7520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarNames, 7620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarTypes, 7720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarOffsets); 7820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateMethodList(const std::string &ClassName, 7920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const std::string &CategoryName, 80a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner const llvm::SmallVectorImpl<Selector> &MethodSels, 8120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &MethodTypes, 8220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov bool isClassMethodList); 83f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::Constant *GenerateEmptyProtocol(const std::string &ProtocolName); 8420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateProtocolList( 8520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<std::string> &Protocols); 8620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateClassStructure( 8720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MetaClass, 8820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SuperClass, 8920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov unsigned info, 90d002cc6fc5b72bf00e3b7b4571ccf0f23c789b4bChris Lattner const char *Name, 9120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Version, 9220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *InstanceSize, 9320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *IVars, 9420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Methods, 9520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Protocols); 9620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateProtocolMethodList( 9720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &MethodNames, 9820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &MethodTypes); 9920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MakeConstantString(const std::string &Str, const std::string 10020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov &Name=""); 10120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MakeGlobal(const llvm::StructType *Ty, 10220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> &V, const std::string &Name=""); 10320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MakeGlobal(const llvm::ArrayType *Ty, 10420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> &V, const std::string &Name=""); 1059cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian llvm::GlobalVariable *ObjCIvarOffsetVariable(const ObjCInterfaceDecl *ID, 1069cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCIvarDecl *Ivar); 1072a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner void EmitClassRef(const std::string &className); 1080f984268b05edab2cc555a427c441baa9c252658Chris Lattnerpublic: 109dce1406f1c1f572cfd61c494546572d63461c741Chris Lattner CGObjCGNU(CodeGen::CodeGenModule &cgm); 11033fdb738a6c125f4c788733897021b7c1a062b0cSteve Naroff virtual llvm::Constant *GenerateConstantString(const ObjCStringLiteral *); 1118f2926b73ed635afecd020da787af6a837601a2bDaniel Dunbar virtual CodeGen::RValue 1128f2926b73ed635afecd020da787af6a837601a2bDaniel Dunbar GenerateMessageSend(CodeGen::CodeGenFunction &CGF, 1137f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar QualType ResultType, 1147f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar Selector Sel, 115f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar llvm::Value *Receiver, 11619cd87eb5fb3c197e631ce08fd52c446c4d4e8f1Daniel Dunbar bool IsClassMessage, 117df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian const CallArgList &CallArgs, 118df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian const ObjCMethodDecl *Method); 1198f2926b73ed635afecd020da787af6a837601a2bDaniel Dunbar virtual CodeGen::RValue 1208f2926b73ed635afecd020da787af6a837601a2bDaniel Dunbar GenerateMessageSendSuper(CodeGen::CodeGenFunction &CGF, 1217f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar QualType ResultType, 1227f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar Selector Sel, 123f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar const ObjCInterfaceDecl *Class, 1247ce77920a35060f1c8dd72e541e42ce296ccd168Fariborz Jahanian bool isCategoryImpl, 125f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar llvm::Value *Receiver, 12619cd87eb5fb3c197e631ce08fd52c446c4d4e8f1Daniel Dunbar bool IsClassMessage, 12719cd87eb5fb3c197e631ce08fd52c446c4d4e8f1Daniel Dunbar const CallArgList &CallArgs); 12845d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbar virtual llvm::Value *GetClass(CGBuilderTy &Builder, 129ddb2a3d55a24a1dbdf9152621642d9a4b4fc2f61Daniel Dunbar const ObjCInterfaceDecl *OID); 13045d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbar virtual llvm::Value *GetSelector(CGBuilderTy &Builder, Selector Sel); 131df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian virtual llvm::Value *GetSelector(CGBuilderTy &Builder, const ObjCMethodDecl 132df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian *Method); 1338e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner 134679a502d462ef819e6175b58e255ca3f3391e7cfFariborz Jahanian virtual llvm::Function *GenerateMethod(const ObjCMethodDecl *OMD, 135679a502d462ef819e6175b58e255ca3f3391e7cfFariborz Jahanian const ObjCContainerDecl *CD); 1367ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar virtual void GenerateCategory(const ObjCCategoryImplDecl *CMD); 1377ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar virtual void GenerateClass(const ObjCImplementationDecl *ClassDecl); 13845d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbar virtual llvm::Value *GenerateProtocolRef(CGBuilderTy &Builder, 139af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar const ObjCProtocolDecl *PD); 140af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar virtual void GenerateProtocol(const ObjCProtocolDecl *PD); 14120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov virtual llvm::Function *ModuleInitFunction(); 142c38e9affd4519ea199af22419c8c794973cc4b23Fariborz Jahanian virtual void MergeMetadataGlobals(std::vector<llvm::Constant*> &UsedArray); 14349f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar virtual llvm::Function *GetPropertyGetFunction(); 14449f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar virtual llvm::Function *GetPropertySetFunction(); 1452abd89c039e835e84519a4cd8a7495899a70153dAnders Carlsson virtual llvm::Function *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. 1802a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattnervoid 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 1832a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner if (TheModule.getGlobalVariable(symbolRef)) return; 1842a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner std::string symbolName = "__objc_class_name_" + className; 1852a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner llvm::GlobalVariable *ClassSymbol = TheModule.getGlobalVariable(symbolName); 1862a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner if (!ClassSymbol) { 1871c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson ClassSymbol = new llvm::GlobalVariable(TheModule, LongTy, false, 1881c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson llvm::GlobalValue::ExternalLinkage, 0, symbolName); 1892a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner } 1901c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson new llvm::GlobalVariable(TheModule, ClassSymbol->getType(), true, 1911c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson llvm::GlobalValue::CommonLinkage, ClassSymbol, symbolRef); 1922a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner} 19320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 19420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovstatic std::string SymbolNameForClass(const std::string &ClassName) { 1952a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner return "_OBJC_CLASS_" + ClassName; 19620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 19720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 19820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovstatic std::string SymbolNameForMethod(const std::string &ClassName, const 19920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::string &CategoryName, const std::string &MethodName, bool isClassMethod) 20020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov{ 2012a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner return "_OBJC_METHOD_" + ClassName + "("+CategoryName+")"+ 20220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov (isClassMethod ? "+" : "-") + MethodName; 20320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 20420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 205dce1406f1c1f572cfd61c494546572d63461c741Chris LattnerCGObjCGNU::CGObjCGNU(CodeGen::CodeGenModule &cgm) 2065efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar : CGM(cgm), TheModule(CGM.getModule()), ClassPtrAlias(0), 2075efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar MetaClassPtrAlias(0) { 208e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner IntTy = cast<llvm::IntegerType>( 209e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner CGM.getTypes().ConvertType(CGM.getContext().IntTy)); 210e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner LongTy = cast<llvm::IntegerType>( 211e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner CGM.getTypes().ConvertType(CGM.getContext().LongTy)); 212dce1406f1c1f572cfd61c494546572d63461c741Chris Lattner 2133a5013cab1162118bd5bcf00a36c52e19a319f87Sebastian Redl Zeros[0] = llvm::ConstantInt::get(LongTy, 0); 21420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Zeros[1] = Zeros[0]; 21520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULLPtr = llvm::ConstantPointerNull::get( 21620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::PointerType::getUnqual(llvm::Type::Int8Ty)); 217391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner // C string type. Used in lots of places. 218391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner PtrToInt8Ty = 219391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner llvm::PointerType::getUnqual(llvm::Type::Int8Ty); 220391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner // Get the selector Type. 221e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner SelectorTy = cast<llvm::PointerType>( 222e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner CGM.getTypes().ConvertType(CGM.getContext().getObjCSelType())); 223e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner 224391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner PtrToIntTy = llvm::PointerType::getUnqual(IntTy); 225391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner PtrTy = PtrToInt8Ty; 226391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner 227391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner // Object type 228b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian IdTy = cast<llvm::PointerType>( 229b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CGM.getTypes().ConvertType(CGM.getContext().getObjCIdType())); 230391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner 231391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner // IMP type 232391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner std::vector<const llvm::Type*> IMPArgs; 233391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner IMPArgs.push_back(IdTy); 234391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner IMPArgs.push_back(SelectorTy); 235391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner IMPTy = llvm::FunctionType::get(IdTy, IMPArgs, true); 23620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 23720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// This has to perform the lookup every time, since posing and related 23820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// techniques can modify the name -> class mapping. 23945d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbarllvm::Value *CGObjCGNU::GetClass(CGBuilderTy &Builder, 240ddb2a3d55a24a1dbdf9152621642d9a4b4fc2f61Daniel Dunbar const ObjCInterfaceDecl *OID) { 241d9d22dd9c94618490dbffb0e2caf222530ca39d3Chris Lattner llvm::Value *ClassName = CGM.GetAddrOfConstantCString(OID->getNameAsString()); 2422a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner EmitClassRef(OID->getNameAsString()); 243ddb2a3d55a24a1dbdf9152621642d9a4b4fc2f61Daniel Dunbar ClassName = Builder.CreateStructGEP(ClassName, 0); 244ddb2a3d55a24a1dbdf9152621642d9a4b4fc2f61Daniel Dunbar 24526c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian std::vector<const llvm::Type*> Params(1, PtrToInt8Ty); 24620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ClassLookupFn = 24726c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian CGM.CreateRuntimeFunction(llvm::FunctionType::get(IdTy, 24826c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian Params, 24926c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian true), 25026c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian "objc_lookup_class"); 25120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return Builder.CreateCall(ClassLookupFn, ClassName); 252391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner} 253391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner 25445d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbarllvm::Value *CGObjCGNU::GetSelector(CGBuilderTy &Builder, Selector Sel) { 255077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner llvm::GlobalAlias *&US = UntypedSelectors[Sel.getAsString()]; 2568e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner if (US == 0) 2578e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner US = new llvm::GlobalAlias(llvm::PointerType::getUnqual(SelectorTy), 2588e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner llvm::GlobalValue::InternalLinkage, 2598e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner ".objc_untyped_selector_alias", 2608e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner NULL, &TheModule); 2618e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner 2628e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner return Builder.CreateLoad(US); 263df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian} 264df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian 265df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanianllvm::Value *CGObjCGNU::GetSelector(CGBuilderTy &Builder, const ObjCMethodDecl 266df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian *Method) { 267df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian 268df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian std::string SelName = Method->getSelector().getAsString(); 269df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian std::string SelTypes; 270df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian CGM.getContext().getObjCEncodingForMethodDecl(Method, SelTypes); 271df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian // Typed selectors 272df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian TypedSelector Selector = TypedSelector(SelName, 273df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian SelTypes); 274df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian 275df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian // If it's already cached, return it. 276df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian if (TypedSelectors[Selector]) 277df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian { 278df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian return Builder.CreateLoad(TypedSelectors[Selector]); 279df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian } 280df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian 281df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian // If it isn't, cache it. 282df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian llvm::GlobalAlias *Sel = new llvm::GlobalAlias( 283df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian llvm::PointerType::getUnqual(SelectorTy), 284df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian llvm::GlobalValue::InternalLinkage, SelName, 285df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian NULL, &TheModule); 286df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian TypedSelectors[Selector] = Sel; 287df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian 288df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian return Builder.CreateLoad(Sel); 2898e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner} 2908e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner 2915e7dcc62e4637591959f9c372f6c5258d0d263e0Chris Lattnerllvm::Constant *CGObjCGNU::MakeConstantString(const std::string &Str, 2925e7dcc62e4637591959f9c372f6c5258d0d263e0Chris Lattner const std::string &Name) { 29320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant * ConstStr = llvm::ConstantArray::get(Str); 2941c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson ConstStr = new llvm::GlobalVariable(TheModule, ConstStr->getType(), true, 29520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::GlobalValue::InternalLinkage, 2961c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson ConstStr, Name); 29720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return llvm::ConstantExpr::getGetElementPtr(ConstStr, Zeros, 2); 29820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 29920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::MakeGlobal(const llvm::StructType *Ty, 30020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> &V, const std::string &Name) { 30120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *C = llvm::ConstantStruct::get(Ty, V); 3021c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson return new llvm::GlobalVariable(TheModule, Ty, false, 3031c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson llvm::GlobalValue::InternalLinkage, C, Name); 30420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 30520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::MakeGlobal(const llvm::ArrayType *Ty, 30620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> &V, const std::string &Name) { 30720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *C = llvm::ConstantArray::get(Ty, V); 3081c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson return new llvm::GlobalVariable(TheModule, Ty, false, 3091c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson llvm::GlobalValue::InternalLinkage, C, Name); 31020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 31120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 31220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// Generate an NSConstantString object. 31320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov//TODO: In case there are any crazy people still using the GNU runtime without 31420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov//an OpenStep implementation, this should let them select their own class for 31520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov//constant strings. 31633fdb738a6c125f4c788733897021b7c1a062b0cSteve Naroffllvm::Constant *CGObjCGNU::GenerateConstantString(const ObjCStringLiteral *SL) { 31733fdb738a6c125f4c788733897021b7c1a062b0cSteve Naroff std::string Str(SL->getString()->getStrData(), 31833fdb738a6c125f4c788733897021b7c1a062b0cSteve Naroff SL->getString()->getByteLength()); 31920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Ivars; 32020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Ivars.push_back(NULLPtr); 32113fd7e5111032f54b538dd66d035b0ccc1f82467Chris Lattner Ivars.push_back(MakeConstantString(Str)); 322bbce49b9e5c6d7f05926b89f8e6fd235ae01c250Daniel Dunbar Ivars.push_back(llvm::ConstantInt::get(IntTy, Str.size())); 32320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ObjCStr = MakeGlobal( 32420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StructType::get(PtrToInt8Ty, PtrToInt8Ty, IntTy, NULL), 32520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Ivars, ".objc_str"); 32620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ConstantStrings.push_back( 32720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ConstantExpr::getBitCast(ObjCStr, PtrToInt8Ty)); 32820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return ObjCStr; 32920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 33020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 33120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov///Generates a message send where the super is the receiver. This is a message 33220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov///send to self with special delivery semantics indicating which class's method 33320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov///should be called. 3348f2926b73ed635afecd020da787af6a837601a2bDaniel DunbarCodeGen::RValue 3358f2926b73ed635afecd020da787af6a837601a2bDaniel DunbarCGObjCGNU::GenerateMessageSendSuper(CodeGen::CodeGenFunction &CGF, 3367f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar QualType ResultType, 3377f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar Selector Sel, 338f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar const ObjCInterfaceDecl *Class, 3397ce77920a35060f1c8dd72e541e42ce296ccd168Fariborz Jahanian bool isCategoryImpl, 340f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar llvm::Value *Receiver, 34119cd87eb5fb3c197e631ce08fd52c446c4d4e8f1Daniel Dunbar bool IsClassMessage, 34219cd87eb5fb3c197e631ce08fd52c446c4d4e8f1Daniel Dunbar const CallArgList &CallArgs) { 343b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian llvm::Value *cmd = GetSelector(CGF.Builder, Sel); 344b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 345b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CallArgList ActualArgs; 346b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 347b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian ActualArgs.push_back( 348b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian std::make_pair(RValue::get(CGF.Builder.CreateBitCast(Receiver, IdTy)), 349b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CGF.getContext().getObjCIdType())); 350b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian ActualArgs.push_back(std::make_pair(RValue::get(cmd), 351b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CGF.getContext().getObjCSelType())); 352b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian ActualArgs.insert(ActualArgs.end(), CallArgs.begin(), CallArgs.end()); 353b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 354b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CodeGenTypes &Types = CGM.getTypes(); 355b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian const CGFunctionInfo &FnInfo = Types.getFunctionInfo(ResultType, ActualArgs); 356b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian const llvm::FunctionType *impType = Types.GetFunctionType(FnInfo, false); 357b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 3585efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar llvm::Value *ReceiverClass = 0; 35948e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (isCategoryImpl) { 36048e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner llvm::Constant *classLookupFunction = 0; 36148e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner std::vector<const llvm::Type*> Params; 36248e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner Params.push_back(PtrTy); 36348e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (IsClassMessage) { 36448e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner classLookupFunction = CGM.CreateRuntimeFunction(llvm::FunctionType::get( 36548e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner IdTy, Params, true), "objc_get_meta_class"); 36648e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner } else { 36748e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner classLookupFunction = CGM.CreateRuntimeFunction(llvm::FunctionType::get( 36848e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner IdTy, Params, true), "objc_get_class"); 3695efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } 37048e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner ReceiverClass = CGF.Builder.CreateCall(classLookupFunction, 37148e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner MakeConstantString(Class->getNameAsString())); 3725efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } else { 37348e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner // Set up global aliases for the metaclass or class pointer if they do not 37448e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner // already exist. These will are forward-references which will be set to 37548e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner // pointers to the class and metaclass structure created for the runtime load 37648e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner // function. To send a message to super, we look up the value of the 37748e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner // super_class pointer from either the class or metaclass structure. 37848e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (IsClassMessage) { 37948e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (!MetaClassPtrAlias) { 38048e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner MetaClassPtrAlias = new llvm::GlobalAlias(IdTy, 38148e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner llvm::GlobalValue::InternalLinkage, ".objc_metaclass_ref" + 38248e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner Class->getNameAsString(), NULL, &TheModule); 38348e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner } 38448e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner ReceiverClass = MetaClassPtrAlias; 38548e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner } else { 38648e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (!ClassPtrAlias) { 38748e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner ClassPtrAlias = new llvm::GlobalAlias(IdTy, 38848e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner llvm::GlobalValue::InternalLinkage, ".objc_class_ref" + 38948e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner Class->getNameAsString(), NULL, &TheModule); 39048e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner } 39148e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner ReceiverClass = ClassPtrAlias; 3925efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } 39371238f67c5df13eef19450d66b7a7ab28377192aChris Lattner } 3945efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar // Cast the pointer to a simplified version of the class structure 3955efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar ReceiverClass = CGF.Builder.CreateBitCast(ReceiverClass, 3965efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar llvm::PointerType::getUnqual(llvm::StructType::get(IdTy, IdTy, NULL))); 3975efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar // Get the superclass pointer 3985efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar ReceiverClass = CGF.Builder.CreateStructGEP(ReceiverClass, 1); 3995efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar // Load the superclass pointer 4005efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar ReceiverClass = CGF.Builder.CreateLoad(ReceiverClass); 40120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Construct the structure used to look up the IMP 40220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StructType *ObjCSuperTy = llvm::StructType::get(Receiver->getType(), 40320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IdTy, NULL); 4048f2926b73ed635afecd020da787af6a837601a2bDaniel Dunbar llvm::Value *ObjCSuper = CGF.Builder.CreateAlloca(ObjCSuperTy); 405b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 4068f2926b73ed635afecd020da787af6a837601a2bDaniel Dunbar CGF.Builder.CreateStore(Receiver, CGF.Builder.CreateStructGEP(ObjCSuper, 0)); 4075efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar CGF.Builder.CreateStore(ReceiverClass, 4085efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar CGF.Builder.CreateStructGEP(ObjCSuper, 1)); 40920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 41020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Get the IMP 41126c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian std::vector<const llvm::Type*> Params; 41226c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian Params.push_back(llvm::PointerType::getUnqual(ObjCSuperTy)); 41326c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian Params.push_back(SelectorTy); 41420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *lookupFunction = 41526c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian CGM.CreateRuntimeFunction(llvm::FunctionType::get( 41626c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian llvm::PointerType::getUnqual(impType), Params, true), 41726c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian "objc_msg_lookup_super"); 41826c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian 41920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Value *lookupArgs[] = {ObjCSuper, cmd}; 4208f2926b73ed635afecd020da787af6a837601a2bDaniel Dunbar llvm::Value *imp = CGF.Builder.CreateCall(lookupFunction, lookupArgs, 42120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov lookupArgs+2); 42220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 423b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian return CGF.EmitCall(FnInfo, imp, ActualArgs); 42420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 42520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 42620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// Generate code for a message send expression. 4278f2926b73ed635afecd020da787af6a837601a2bDaniel DunbarCodeGen::RValue 4288f2926b73ed635afecd020da787af6a837601a2bDaniel DunbarCGObjCGNU::GenerateMessageSend(CodeGen::CodeGenFunction &CGF, 4297f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar QualType ResultType, 4307f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar Selector Sel, 431f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar llvm::Value *Receiver, 43219cd87eb5fb3c197e631ce08fd52c446c4d4e8f1Daniel Dunbar bool IsClassMessage, 433df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian const CallArgList &CallArgs, 434df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian const ObjCMethodDecl *Method) { 435df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian llvm::Value *cmd; 436df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian if (Method) 437df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian cmd = GetSelector(CGF.Builder, Method); 438df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian else 439df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian cmd = GetSelector(CGF.Builder, Sel); 440b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CallArgList ActualArgs; 441b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 442b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian ActualArgs.push_back( 44334e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian std::make_pair(RValue::get(CGF.Builder.CreateBitCast(Receiver, IdTy)), 44434e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian CGF.getContext().getObjCIdType())); 445b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian ActualArgs.push_back(std::make_pair(RValue::get(cmd), 446b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CGF.getContext().getObjCSelType())); 447b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian ActualArgs.insert(ActualArgs.end(), CallArgs.begin(), CallArgs.end()); 448b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 449b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CodeGenTypes &Types = CGM.getTypes(); 450b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian const CGFunctionInfo &FnInfo = Types.getFunctionInfo(ResultType, ActualArgs); 451b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian const llvm::FunctionType *impType = Types.GetFunctionType(FnInfo, false); 4520f984268b05edab2cc555a427c441baa9c252658Chris Lattner 45334e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian llvm::Value *imp; 45426c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian std::vector<const llvm::Type*> Params; 45526c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian Params.push_back(Receiver->getType()); 45626c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian Params.push_back(SelectorTy); 45734e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian // For sender-aware dispatch, we pass the sender as the third argument to a 45834e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian // lookup function. When sending messages from C code, the sender is nil. 45934e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian // objc_msg_lookup_sender(id receiver, SEL selector, id sender); 46034e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian if (CGM.getContext().getLangOptions().ObjCSenderDispatch) { 46134e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian llvm::Value *self; 46234e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian 46334e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian if (isa<ObjCMethodDecl>(CGF.CurFuncDecl)) { 46434e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian self = CGF.LoadObjCSelf(); 46534e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian } else { 46634e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian self = llvm::ConstantPointerNull::get(IdTy); 46734e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian } 46834e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian Params.push_back(self->getType()); 46934e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian llvm::Constant *lookupFunction = 47034e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian CGM.CreateRuntimeFunction(llvm::FunctionType::get( 47126c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian llvm::PointerType::getUnqual(impType), Params, true), 47234e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian "objc_msg_lookup_sender"); 47326c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian 47434e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian imp = CGF.Builder.CreateCall3(lookupFunction, Receiver, cmd, self); 47534e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian } else { 47634e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian llvm::Constant *lookupFunction = 47734e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian CGM.CreateRuntimeFunction(llvm::FunctionType::get( 47834e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian llvm::PointerType::getUnqual(impType), Params, true), 47934e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian "objc_msg_lookup"); 48034e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian 48134e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian imp = CGF.Builder.CreateCall2(lookupFunction, Receiver, cmd); 48234e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian } 4833eae03e7d165f20a863a9a4d7122ba2a691ab16dChris Lattner 484b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian return CGF.EmitCall(FnInfo, imp, ActualArgs); 48520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 48620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 48720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// Generates a MethodList. Used in construction of a objc_class and 48820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// objc_category structures. 48920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::GenerateMethodList(const std::string &ClassName, 490a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner const std::string &CategoryName, 491a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner const llvm::SmallVectorImpl<Selector> &MethodSels, 49220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &MethodTypes, 49320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov bool isClassMethodList) { 49420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Get the method structure type. 49520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StructType *ObjCMethodTy = llvm::StructType::get( 49620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // Really a selector, but the runtime creates it us. 49720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // Method types 49820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::PointerType::getUnqual(IMPTy), //Method pointer 49920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 50020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Methods; 50120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 50220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (unsigned int i = 0, e = MethodTypes.size(); i < e; ++i) { 50320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 5041e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian if (llvm::Constant *Method = 50520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov TheModule.getFunction(SymbolNameForMethod(ClassName, CategoryName, 506077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner MethodSels[i].getAsString(), 5071e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian isClassMethodList))) { 5081e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian llvm::Constant *C = 5091e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian CGM.GetAddrOfConstantCString(MethodSels[i].getAsString()); 5101e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian Elements.push_back(llvm::ConstantExpr::getGetElementPtr(C, Zeros, 2)); 5111e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian Elements.push_back( 5121e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian llvm::ConstantExpr::getGetElementPtr(MethodTypes[i], Zeros, 2)); 5131e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian Method = llvm::ConstantExpr::getBitCast(Method, 5141e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian llvm::PointerType::getUnqual(IMPTy)); 5151e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian Elements.push_back(Method); 5161e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian Methods.push_back(llvm::ConstantStruct::get(ObjCMethodTy, Elements)); 5171e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian } 51820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 51920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 52020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Array of method structures 52120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ArrayType *ObjCMethodArrayTy = llvm::ArrayType::get(ObjCMethodTy, 5221e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian Methods.size()); 52320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MethodArray = llvm::ConstantArray::get(ObjCMethodArrayTy, 524fba676396703e87a5034e5f308aa30a633468f66Chris Lattner Methods); 52520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 52620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Structure containing list pointer, array and array count 52720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::SmallVector<const llvm::Type*, 16> ObjCMethodListFields; 52820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::PATypeHolder OpaqueNextTy = llvm::OpaqueType::get(); 52920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Type *NextPtrTy = llvm::PointerType::getUnqual(OpaqueNextTy); 53020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StructType *ObjCMethodListTy = llvm::StructType::get(NextPtrTy, 53120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IntTy, 53220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ObjCMethodArrayTy, 53320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 53420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Refine next pointer type to concrete type 53520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::cast<llvm::OpaqueType>( 53620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov OpaqueNextTy.get())->refineAbstractTypeTo(ObjCMethodListTy); 53720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ObjCMethodListTy = llvm::cast<llvm::StructType>(OpaqueNextTy.get()); 53820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 53920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.clear(); 54020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.push_back(llvm::ConstantPointerNull::get( 54120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::PointerType::getUnqual(ObjCMethodListTy))); 54220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.push_back(llvm::ConstantInt::get(llvm::Type::Int32Ty, 54320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov MethodTypes.size())); 54420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.push_back(MethodArray); 54520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 54620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an instance of the structure 54720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ObjCMethodListTy, Methods, ".objc_method_list"); 54820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 54920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 55020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// Generates an IvarList. Used in construction of a objc_class. 55120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::GenerateIvarList( 55220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarNames, 55320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarTypes, 55420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarOffsets) { 55520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Get the method structure type. 55620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StructType *ObjCIvarTy = llvm::StructType::get( 55720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 55820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 55920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IntTy, 56020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 56120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Ivars; 56220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 56320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (unsigned int i = 0, e = IvarNames.size() ; i < e ; i++) { 56420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 56520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back( llvm::ConstantExpr::getGetElementPtr(IvarNames[i], 56620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Zeros, 2)); 56720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back( llvm::ConstantExpr::getGetElementPtr(IvarTypes[i], 56820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Zeros, 2)); 56920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(IvarOffsets[i]); 57020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Ivars.push_back(llvm::ConstantStruct::get(ObjCIvarTy, Elements)); 57120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 57220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 57320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Array of method structures 57420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ArrayType *ObjCIvarArrayTy = llvm::ArrayType::get(ObjCIvarTy, 57520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IvarNames.size()); 57620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 57720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 57820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 579e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner Elements.push_back(llvm::ConstantInt::get(IntTy, (int)IvarNames.size())); 58020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(llvm::ConstantArray::get(ObjCIvarArrayTy, Ivars)); 58120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Structure containing array and array count 58220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StructType *ObjCIvarListTy = llvm::StructType::get(IntTy, 58320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ObjCIvarArrayTy, 58420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 58520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 58620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an instance of the structure 58720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ObjCIvarListTy, Elements, ".objc_ivar_list"); 5880f984268b05edab2cc555a427c441baa9c252658Chris Lattner} 5890f984268b05edab2cc555a427c441baa9c252658Chris Lattner 59020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// Generate a class structure 59120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::GenerateClassStructure( 59220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MetaClass, 59320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SuperClass, 59420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov unsigned info, 595d002cc6fc5b72bf00e3b7b4571ccf0f23c789b4bChris Lattner const char *Name, 59620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Version, 59720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *InstanceSize, 59820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *IVars, 59920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Methods, 60020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Protocols) { 60120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Set up the class structure 60220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Note: Several of these are char*s when they should be ids. This is 60320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // because the runtime performs this translation on load. 60420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StructType *ClassTy = llvm::StructType::get( 60520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // class_pointer 60620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // super_class 60720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // name 60820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov LongTy, // version 60920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov LongTy, // info 61020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov LongTy, // instance_size 61120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IVars->getType(), // ivars 61220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods->getType(), // methods 61320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // These are all filled in by the runtime, so we pretend 61420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // dtable 61520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // subclass_list 61620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // sibling_class 61720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // protocols 61820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // gc_object_type 61920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 62020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Zero = llvm::ConstantInt::get(LongTy, 0); 62120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *NullP = 622e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner llvm::ConstantPointerNull::get(PtrTy); 62320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Fill in the structure 62420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 62520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(llvm::ConstantExpr::getBitCast(MetaClass, PtrToInt8Ty)); 62620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(SuperClass); 627d002cc6fc5b72bf00e3b7b4571ccf0f23c789b4bChris Lattner Elements.push_back(MakeConstantString(Name, ".class_name")); 62820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(Zero); 62920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(llvm::ConstantInt::get(LongTy, info)); 63020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(InstanceSize); 63120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(IVars); 63220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(Methods); 63320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NullP); 63420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NullP); 63520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NullP); 63620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(llvm::ConstantExpr::getBitCast(Protocols, PtrTy)); 63720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NullP); 63820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an instance of the structure 6391565e0364b05d163640dd2b6feed43bae67df4fdChris Lattner return MakeGlobal(ClassTy, Elements, SymbolNameForClass(Name)); 64020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 64120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 64220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::GenerateProtocolMethodList( 64320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &MethodNames, 64420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &MethodTypes) { 64520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Get the method structure type. 64620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StructType *ObjCMethodDescTy = llvm::StructType::get( 64720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // Really a selector, but the runtime does the casting for us. 64820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 64920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 65020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Methods; 65120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 65220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (unsigned int i = 0, e = MethodTypes.size() ; i < e ; i++) { 65320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 65420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back( llvm::ConstantExpr::getGetElementPtr(MethodNames[i], 65520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Zeros, 2)); 65620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back( 65720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ConstantExpr::getGetElementPtr(MethodTypes[i], Zeros, 2)); 65820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.push_back(llvm::ConstantStruct::get(ObjCMethodDescTy, Elements)); 65920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 66020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ArrayType *ObjCMethodArrayTy = llvm::ArrayType::get(ObjCMethodDescTy, 66120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov MethodNames.size()); 66220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Array = llvm::ConstantArray::get(ObjCMethodArrayTy, Methods); 66320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StructType *ObjCMethodDescListTy = llvm::StructType::get( 66420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IntTy, ObjCMethodArrayTy, NULL); 66520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.clear(); 66620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.push_back(llvm::ConstantInt::get(IntTy, MethodNames.size())); 66720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.push_back(Array); 66820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ObjCMethodDescListTy, Methods, ".objc_method_list"); 66920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 67020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// Create the protocol list structure used in classes, categories and so on 67120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::GenerateProtocolList( 67220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<std::string> &Protocols) { 67320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ArrayType *ProtocolArrayTy = llvm::ArrayType::get(PtrToInt8Ty, 67420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Protocols.size()); 67520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StructType *ProtocolListTy = llvm::StructType::get( 67620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, //Should be a recurisve pointer, but it's always NULL here. 67720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov LongTy,//FIXME: Should be size_t 67820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ProtocolArrayTy, 67920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 68020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 68120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (const std::string *iter = Protocols.begin(), *endIter = Protocols.end(); 68220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter != endIter ; iter++) { 683f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::Constant *protocol = ExistingProtocols[*iter]; 684f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian if (!protocol) 685f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian protocol = GenerateEmptyProtocol(*iter); 68620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Ptr = 687f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::ConstantExpr::getBitCast(protocol, PtrToInt8Ty); 68820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(Ptr); 68920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 69020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant * ProtocolArray = llvm::ConstantArray::get(ProtocolArrayTy, 69120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements); 69220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 69320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 694e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner Elements.push_back(llvm::ConstantInt::get(LongTy, Protocols.size())); 69520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ProtocolArray); 69620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ProtocolListTy, Elements, ".objc_protocol_list"); 69720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 69820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 69945d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbarllvm::Value *CGObjCGNU::GenerateProtocolRef(CGBuilderTy &Builder, 700af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar const ObjCProtocolDecl *PD) { 701f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::Value *protocol = ExistingProtocols[PD->getNameAsString()]; 702f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian const llvm::Type *T = 703f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian CGM.getTypes().ConvertType(CGM.getContext().getObjCProtoType()); 704f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian return Builder.CreateBitCast(protocol, llvm::PointerType::getUnqual(T)); 705f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian} 706f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian 707f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanianllvm::Constant *CGObjCGNU::GenerateEmptyProtocol( 708f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian const std::string &ProtocolName) { 709f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::SmallVector<std::string, 0> EmptyStringVector; 710f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::SmallVector<llvm::Constant*, 0> EmptyConstantVector; 711f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian 712f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::Constant *ProtocolList = GenerateProtocolList(EmptyStringVector); 713f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::Constant *InstanceMethodList = 714f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian GenerateProtocolMethodList(EmptyConstantVector, EmptyConstantVector); 715f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::Constant *ClassMethodList = 716f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian GenerateProtocolMethodList(EmptyConstantVector, EmptyConstantVector); 717f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian // Protocols are objects containing lists of the methods implemented and 718f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian // protocols adopted. 719f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::StructType *ProtocolTy = llvm::StructType::get(IdTy, 720f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian PtrToInt8Ty, 721f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian ProtocolList->getType(), 722f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian InstanceMethodList->getType(), 723f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian ClassMethodList->getType(), 724f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian NULL); 725f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian std::vector<llvm::Constant*> Elements; 726f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian // The isa pointer must be set to a magic number so the runtime knows it's 727f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian // the correct layout. 728f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian Elements.push_back(llvm::ConstantExpr::getIntToPtr( 729f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::ConstantInt::get(llvm::Type::Int32Ty, ProtocolVersion), IdTy)); 730f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian Elements.push_back(MakeConstantString(ProtocolName, ".objc_protocol_name")); 731f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian Elements.push_back(ProtocolList); 732f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian Elements.push_back(InstanceMethodList); 733f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian Elements.push_back(ClassMethodList); 734f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian return MakeGlobal(ProtocolTy, Elements, ".objc_protocol"); 73520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 73620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 737af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbarvoid CGObjCGNU::GenerateProtocol(const ObjCProtocolDecl *PD) { 738af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar ASTContext &Context = CGM.getContext(); 7398ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string ProtocolName = PD->getNameAsString(); 740af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar llvm::SmallVector<std::string, 16> Protocols; 741af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar for (ObjCProtocolDecl::protocol_iterator PI = PD->protocol_begin(), 742af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar E = PD->protocol_end(); PI != E; ++PI) 743d9d22dd9c94618490dbffb0e2caf222530ca39d3Chris Lattner Protocols.push_back((*PI)->getNameAsString()); 744af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> InstanceMethodNames; 745af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> InstanceMethodTypes; 74617945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis for (ObjCProtocolDecl::instmeth_iterator iter = PD->instmeth_begin(), 74717945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis E = PD->instmeth_end(); iter != E; iter++) { 748af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar std::string TypeStr; 749af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar Context.getObjCEncodingForMethodDecl(*iter, TypeStr); 750af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar InstanceMethodNames.push_back( 751077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner CGM.GetAddrOfConstantCString((*iter)->getSelector().getAsString())); 7526143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar InstanceMethodTypes.push_back(CGM.GetAddrOfConstantCString(TypeStr)); 753af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar } 754af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar // Collect information about class methods: 755af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> ClassMethodNames; 756af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> ClassMethodTypes; 7576ab3524f72a6e64aa04973fa9433b5559abb3525Douglas Gregor for (ObjCProtocolDecl::classmeth_iterator 75817945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = PD->classmeth_begin(), endIter = PD->classmeth_end(); 75917945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter != endIter ; iter++) { 760af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar std::string TypeStr; 761af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar Context.getObjCEncodingForMethodDecl((*iter),TypeStr); 762af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar ClassMethodNames.push_back( 763077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner CGM.GetAddrOfConstantCString((*iter)->getSelector().getAsString())); 7646143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar ClassMethodTypes.push_back(CGM.GetAddrOfConstantCString(TypeStr)); 765af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar } 76620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 76720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ProtocolList = GenerateProtocolList(Protocols); 76820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *InstanceMethodList = 76920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov GenerateProtocolMethodList(InstanceMethodNames, InstanceMethodTypes); 77020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ClassMethodList = 77120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov GenerateProtocolMethodList(ClassMethodNames, ClassMethodTypes); 77220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Protocols are objects containing lists of the methods implemented and 77320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // protocols adopted. 77420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StructType *ProtocolTy = llvm::StructType::get(IdTy, 77520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 77620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ProtocolList->getType(), 77720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov InstanceMethodList->getType(), 77820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ClassMethodList->getType(), 77920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 78020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 78120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // The isa pointer must be set to a magic number so the runtime knows it's 78220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // the correct layout. 78320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(llvm::ConstantExpr::getIntToPtr( 78420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ConstantInt::get(llvm::Type::Int32Ty, ProtocolVersion), IdTy)); 78520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(MakeConstantString(ProtocolName, ".objc_protocol_name")); 78620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ProtocolList); 78720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(InstanceMethodList); 78820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ClassMethodList); 78920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ExistingProtocols[ProtocolName] = 79020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ConstantExpr::getBitCast(MakeGlobal(ProtocolTy, Elements, 79120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ".objc_protocol"), IdTy); 79220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 79320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 7947ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbarvoid CGObjCGNU::GenerateCategory(const ObjCCategoryImplDecl *OCD) { 7958ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string ClassName = OCD->getClassInterface()->getNameAsString(); 7968ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string CategoryName = OCD->getNameAsString(); 7977ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about instance methods 7987ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<Selector, 16> InstanceMethodSels; 7997ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> InstanceMethodTypes; 800653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor for (ObjCCategoryImplDecl::instmeth_iterator 80117945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = OCD->instmeth_begin(), endIter = OCD->instmeth_end(); 802653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter != endIter ; iter++) { 8037ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar InstanceMethodSels.push_back((*iter)->getSelector()); 8047ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 8057ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar CGM.getContext().getObjCEncodingForMethodDecl(*iter,TypeStr); 8067ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar InstanceMethodTypes.push_back(CGM.GetAddrOfConstantCString(TypeStr)); 8077ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 8087ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 8097ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about class methods 8107ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<Selector, 16> ClassMethodSels; 8117ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> ClassMethodTypes; 812653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor for (ObjCCategoryImplDecl::classmeth_iterator 81317945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = OCD->classmeth_begin(), endIter = OCD->classmeth_end(); 814653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter != endIter ; iter++) { 8157ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar ClassMethodSels.push_back((*iter)->getSelector()); 8167ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 8177ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar CGM.getContext().getObjCEncodingForMethodDecl(*iter,TypeStr); 8187ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar ClassMethodTypes.push_back(CGM.GetAddrOfConstantCString(TypeStr)); 8197ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 8207ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 8217ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect the names of referenced protocols 8227ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<std::string, 16> Protocols; 8237ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar const ObjCInterfaceDecl *ClassDecl = OCD->getClassInterface(); 8247ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar const ObjCList<ObjCProtocolDecl> &Protos =ClassDecl->getReferencedProtocols(); 8257ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar for (ObjCList<ObjCProtocolDecl>::iterator I = Protos.begin(), 8267ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar E = Protos.end(); I != E; ++I) 827d9d22dd9c94618490dbffb0e2caf222530ca39d3Chris Lattner Protocols.push_back((*I)->getNameAsString()); 8287ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 82920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 83020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(MakeConstantString(CategoryName)); 83120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(MakeConstantString(ClassName)); 83220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Instance method list 83320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(llvm::ConstantExpr::getBitCast(GenerateMethodList( 834a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner ClassName, CategoryName, InstanceMethodSels, InstanceMethodTypes, 83520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov false), PtrTy)); 83620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Class method list 83720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(llvm::ConstantExpr::getBitCast(GenerateMethodList( 838a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner ClassName, CategoryName, ClassMethodSels, ClassMethodTypes, true), 83920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy)); 84020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Protocol list 84120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(llvm::ConstantExpr::getBitCast( 84220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov GenerateProtocolList(Protocols), PtrTy)); 84320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Categories.push_back(llvm::ConstantExpr::getBitCast( 84420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov MakeGlobal(llvm::StructType::get(PtrToInt8Ty, PtrToInt8Ty, PtrTy, 84520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, PtrTy, NULL), Elements), PtrTy)); 84620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 8477ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 8487ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbarvoid CGObjCGNU::GenerateClass(const ObjCImplementationDecl *OID) { 8497ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar ASTContext &Context = CGM.getContext(); 8507ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 8517ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Get the superclass name. 8527ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar const ObjCInterfaceDecl * SuperClassDecl = 8537ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar OID->getClassInterface()->getSuperClass(); 8548ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string SuperClassName; 8552a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner if (SuperClassDecl) { 8568ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner SuperClassName = SuperClassDecl->getNameAsString(); 8572a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner EmitClassRef(SuperClassName); 8582a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner } 8597ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 8607ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Get the class name 86109dc6660487fc2f4a4bb2032e30123d3e0da7230Chris Lattner ObjCInterfaceDecl *ClassDecl = 86209dc6660487fc2f4a4bb2032e30123d3e0da7230Chris Lattner const_cast<ObjCInterfaceDecl *>(OID->getClassInterface()); 8638ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string ClassName = ClassDecl->getNameAsString(); 8642a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner // Emit the symbol that is used to generate linker errors if this class is 8652a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner // referenced in other modules but not declared. 866c51db23f58bd887b16cf91554aa86c430a2496e7Fariborz Jahanian std::string classSymbolName = "__objc_class_name_" + ClassName; 867c51db23f58bd887b16cf91554aa86c430a2496e7Fariborz Jahanian if (llvm::GlobalVariable *symbol = 868c51db23f58bd887b16cf91554aa86c430a2496e7Fariborz Jahanian TheModule.getGlobalVariable(classSymbolName)) { 869c51db23f58bd887b16cf91554aa86c430a2496e7Fariborz Jahanian symbol->setInitializer(llvm::ConstantInt::get(LongTy, 0)); 870c51db23f58bd887b16cf91554aa86c430a2496e7Fariborz Jahanian } else { 8711c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson new llvm::GlobalVariable(TheModule, LongTy, false, 8721c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson llvm::GlobalValue::ExternalLinkage, llvm::ConstantInt::get(LongTy, 0), 8731c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson classSymbolName); 874c51db23f58bd887b16cf91554aa86c430a2496e7Fariborz Jahanian } 8752a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner 8762bebbf0acee55404de4b8846713b64429e744e8fDaniel Dunbar // Get the size of instances. 8772bebbf0acee55404de4b8846713b64429e744e8fDaniel Dunbar int instanceSize = Context.getASTObjCImplementationLayout(OID).getSize() / 8; 8787ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 8797ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about instance variables. 8807ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> IvarNames; 8817ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> IvarTypes; 8827ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> IvarOffsets; 8839cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian 8849cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian int superInstanceSize = !SuperClassDecl ? 0 : 8859cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian Context.getASTObjCInterfaceLayout(SuperClassDecl).getSize() / 8; 8869cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // For non-fragile ivars, set the instance size to 0 - {the size of just this 8879cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // class}. The runtime will then set this to the correct value on load. 8889cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian if (CGM.getContext().getLangOptions().ObjCNonFragileABI) { 8899cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian instanceSize = 0 - (instanceSize - superInstanceSize); 8909cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 8917ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar for (ObjCInterfaceDecl::ivar_iterator iter = ClassDecl->ivar_begin(), 8927ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar endIter = ClassDecl->ivar_end() ; iter != endIter ; iter++) { 8937ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Store the name 894d9d22dd9c94618490dbffb0e2caf222530ca39d3Chris Lattner IvarNames.push_back(CGM.GetAddrOfConstantCString((*iter) 895d9d22dd9c94618490dbffb0e2caf222530ca39d3Chris Lattner ->getNameAsString())); 8967ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Get the type encoding for this ivar 8977ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 8980d504c1da852e58ff802545c823ecff3b6c654b8Daniel Dunbar Context.getObjCEncodingForType((*iter)->getType(), TypeStr); 8997ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar IvarTypes.push_back(CGM.GetAddrOfConstantCString(TypeStr)); 9007ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Get the offset 9019cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian uint64_t Offset; 9029cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian if (CGM.getContext().getLangOptions().ObjCNonFragileABI) { 9039cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian Offset = ComputeIvarBaseOffset(CGM, ClassDecl, *iter) - 9049cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian superInstanceSize; 9059cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian ObjCIvarOffsetVariable(ClassDecl, *iter); 9069cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } else { 9079cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian Offset = ComputeIvarBaseOffset(CGM, ClassDecl, *iter); 9089cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 9097ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar IvarOffsets.push_back( 910c8cbf1944863160f5f6f82967270b68bfb41361fDaniel Dunbar llvm::ConstantInt::get(llvm::Type::Int32Ty, Offset)); 9117ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 9127ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 9137ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about instance methods 9147ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<Selector, 16> InstanceMethodSels; 9157ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> InstanceMethodTypes; 916653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor for (ObjCImplementationDecl::instmeth_iterator 91717945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = OID->instmeth_begin(), endIter = OID->instmeth_end(); 918653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter != endIter ; iter++) { 9197ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar InstanceMethodSels.push_back((*iter)->getSelector()); 9207ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 9217ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar Context.getObjCEncodingForMethodDecl((*iter),TypeStr); 9227ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar InstanceMethodTypes.push_back(CGM.GetAddrOfConstantCString(TypeStr)); 9237ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 9241e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian for (ObjCImplDecl::propimpl_iterator 92517945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = OID->propimpl_begin(), endIter = OID->propimpl_end(); 9261e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian iter != endIter ; iter++) { 9271e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian ObjCPropertyDecl *property = (*iter)->getPropertyDecl(); 9281e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian if (ObjCMethodDecl *getter = property->getGetterMethodDecl()) { 9291e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian InstanceMethodSels.push_back(getter->getSelector()); 9301e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian std::string TypeStr; 9311e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian Context.getObjCEncodingForMethodDecl(getter,TypeStr); 9321e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian InstanceMethodTypes.push_back(CGM.GetAddrOfConstantCString(TypeStr)); 9331e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian } 9341e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian if (ObjCMethodDecl *setter = property->getSetterMethodDecl()) { 9351e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian InstanceMethodSels.push_back(setter->getSelector()); 9361e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian std::string TypeStr; 9371e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian Context.getObjCEncodingForMethodDecl(setter,TypeStr); 9381e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian InstanceMethodTypes.push_back(CGM.GetAddrOfConstantCString(TypeStr)); 9391e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian } 9401e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian } 9417ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 9427ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about class methods 9437ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<Selector, 16> ClassMethodSels; 9447ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> ClassMethodTypes; 945653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor for (ObjCImplementationDecl::classmeth_iterator 94617945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = OID->classmeth_begin(), endIter = OID->classmeth_end(); 947653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter != endIter ; iter++) { 9487ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar ClassMethodSels.push_back((*iter)->getSelector()); 9497ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 9507ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar Context.getObjCEncodingForMethodDecl((*iter),TypeStr); 9517ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar ClassMethodTypes.push_back(CGM.GetAddrOfConstantCString(TypeStr)); 9527ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 9537ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect the names of referenced protocols 9547ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<std::string, 16> Protocols; 9557ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar const ObjCList<ObjCProtocolDecl> &Protos =ClassDecl->getReferencedProtocols(); 9567ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar for (ObjCList<ObjCProtocolDecl>::iterator I = Protos.begin(), 9577ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar E = Protos.end(); I != E; ++I) 958d9d22dd9c94618490dbffb0e2caf222530ca39d3Chris Lattner Protocols.push_back((*I)->getNameAsString()); 9597ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 9607ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 9617ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 96220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Get the superclass pointer. 96320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SuperClass; 9648ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner if (!SuperClassName.empty()) { 96520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov SuperClass = MakeConstantString(SuperClassName, ".super_class_name"); 96620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } else { 967e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner SuperClass = llvm::ConstantPointerNull::get(PtrToInt8Ty); 96820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 96920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Empty vector used to construct empty method lists 97020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::SmallVector<llvm::Constant*, 1> empty; 97120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Generate the method and instance variable lists 97220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MethodList = GenerateMethodList(ClassName, "", 973a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner InstanceMethodSels, InstanceMethodTypes, false); 97420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ClassMethodList = GenerateMethodList(ClassName, "", 975a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner ClassMethodSels, ClassMethodTypes, true); 97620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *IvarList = GenerateIvarList(IvarNames, IvarTypes, 97720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IvarOffsets); 97820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov //Generate metaclass for class methods 97920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MetaClassStruct = GenerateClassStructure(NULLPtr, 9801565e0364b05d163640dd2b6feed43bae67df4fdChris Lattner NULLPtr, 0x2L, /*name*/"", 0, Zeros[0], GenerateIvarList( 98120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov empty, empty, empty), ClassMethodList, NULLPtr); 9825efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar 98320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Generate the class structure 9848ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner llvm::Constant *ClassStruct = 9858ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner GenerateClassStructure(MetaClassStruct, SuperClass, 0x1L, 9868ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner ClassName.c_str(), 0, 9873a5013cab1162118bd5bcf00a36c52e19a319f87Sebastian Redl llvm::ConstantInt::get(LongTy, instanceSize), IvarList, 98820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov MethodList, GenerateProtocolList(Protocols)); 9895efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar 9905efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar // Resolve the class aliases, if they exist. 9915efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar if (ClassPtrAlias) { 9925efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar ClassPtrAlias->setAliasee( 9935efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar llvm::ConstantExpr::getBitCast(ClassStruct, IdTy)); 9945efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar ClassPtrAlias = 0; 9955efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } 9965efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar if (MetaClassPtrAlias) { 9975efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar MetaClassPtrAlias->setAliasee( 9985efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar llvm::ConstantExpr::getBitCast(MetaClassStruct, IdTy)); 9995efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar MetaClassPtrAlias = 0; 10005efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } 10015efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar 100220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Add class structure to list to be added to the symtab later 100320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ClassStruct = llvm::ConstantExpr::getBitCast(ClassStruct, PtrToInt8Ty); 100420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.push_back(ClassStruct); 100520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 100620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 1007c38e9affd4519ea199af22419c8c794973cc4b23Fariborz Jahanianvoid CGObjCGNU::MergeMetadataGlobals( 1008c38e9affd4519ea199af22419c8c794973cc4b23Fariborz Jahanian std::vector<llvm::Constant*> &UsedArray) { 1009c38e9affd4519ea199af22419c8c794973cc4b23Fariborz Jahanian} 1010c38e9affd4519ea199af22419c8c794973cc4b23Fariborz Jahanian 101120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Function *CGObjCGNU::ModuleInitFunction() { 101220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Only emit an ObjC load function if no Objective-C stuff has been called 101320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov if (Classes.empty() && Categories.empty() && ConstantStrings.empty() && 101420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ExistingProtocols.empty() && TypedSelectors.empty() && 10155f58b911304f7d114f929d1726a09cd1c828a5ddAnton Korobeynikov UntypedSelectors.empty()) 101620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return NULL; 10171b8956e1ce4c5770982d6e59edb16979b500677aEli Friedman 1018e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::StructType *SelStructTy = dyn_cast<llvm::StructType>( 1019e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner SelectorTy->getElementType()); 1020e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::Type *SelStructPtrTy = SelectorTy; 1021e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner bool isSelOpaque = false; 1022e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner if (SelStructTy == 0) { 1023e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner SelStructTy = llvm::StructType::get(PtrToInt8Ty, PtrToInt8Ty, NULL); 1024e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner SelStructPtrTy = llvm::PointerType::getUnqual(SelStructTy); 1025e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner isSelOpaque = true; 1026e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner } 1027e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner 10281b8956e1ce4c5770982d6e59edb16979b500677aEli Friedman // Name the ObjC types to make the IR a bit easier to read 1029e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner TheModule.addTypeName(".objc_selector", SelStructPtrTy); 10301b8956e1ce4c5770982d6e59edb16979b500677aEli Friedman TheModule.addTypeName(".objc_id", IdTy); 10311b8956e1ce4c5770982d6e59edb16979b500677aEli Friedman TheModule.addTypeName(".objc_imp", IMPTy); 10321b8956e1ce4c5770982d6e59edb16979b500677aEli Friedman 103320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 103471238f67c5df13eef19450d66b7a7ab28377192aChris Lattner llvm::Constant *Statics = NULLPtr; 103520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Generate statics list: 103671238f67c5df13eef19450d66b7a7ab28377192aChris Lattner if (ConstantStrings.size()) { 103771238f67c5df13eef19450d66b7a7ab28377192aChris Lattner llvm::ArrayType *StaticsArrayTy = llvm::ArrayType::get(PtrToInt8Ty, 103871238f67c5df13eef19450d66b7a7ab28377192aChris Lattner ConstantStrings.size() + 1); 103971238f67c5df13eef19450d66b7a7ab28377192aChris Lattner ConstantStrings.push_back(NULLPtr); 104071238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Elements.push_back(MakeConstantString("NSConstantString", 104171238f67c5df13eef19450d66b7a7ab28377192aChris Lattner ".objc_static_class_name")); 104271238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Elements.push_back(llvm::ConstantArray::get(StaticsArrayTy, 104371238f67c5df13eef19450d66b7a7ab28377192aChris Lattner ConstantStrings)); 104471238f67c5df13eef19450d66b7a7ab28377192aChris Lattner llvm::StructType *StaticsListTy = 104571238f67c5df13eef19450d66b7a7ab28377192aChris Lattner llvm::StructType::get(PtrToInt8Ty, StaticsArrayTy, NULL); 104671238f67c5df13eef19450d66b7a7ab28377192aChris Lattner llvm::Type *StaticsListPtrTy = llvm::PointerType::getUnqual(StaticsListTy); 104771238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Statics = MakeGlobal(StaticsListTy, Elements, ".objc_statics"); 104871238f67c5df13eef19450d66b7a7ab28377192aChris Lattner llvm::ArrayType *StaticsListArrayTy = 104971238f67c5df13eef19450d66b7a7ab28377192aChris Lattner llvm::ArrayType::get(StaticsListPtrTy, 2); 105071238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Elements.clear(); 105171238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Elements.push_back(Statics); 105269243825cb5c91ec7207256aa57ae327cfaf8cb2Owen Anderson Elements.push_back(TheModule.getContext().getNullValue(StaticsListPtrTy)); 105371238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Statics = MakeGlobal(StaticsListArrayTy, Elements, ".objc_statics_ptr"); 105471238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Statics = llvm::ConstantExpr::getBitCast(Statics, PtrTy); 105571238f67c5df13eef19450d66b7a7ab28377192aChris Lattner } 105620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Array of classes, categories, and constant objects 105720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ArrayType *ClassListTy = llvm::ArrayType::get(PtrToInt8Ty, 105820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.size() + Categories.size() + 2); 1059e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner llvm::StructType *SymTabTy = llvm::StructType::get(LongTy, SelStructPtrTy, 1060630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner llvm::Type::Int16Ty, 1061630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner llvm::Type::Int16Ty, 1062630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner ClassListTy, NULL); 106320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 106420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 106520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Pointer to an array of selectors used in this module. 106620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Selectors; 106720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (std::map<TypedSelector, llvm::GlobalAlias*>::iterator 106820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter = TypedSelectors.begin(), iterEnd = TypedSelectors.end(); 106920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter != iterEnd ; ++iter) { 1070630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner Elements.push_back(MakeConstantString(iter->first.first, ".objc_sel_name")); 1071630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner Elements.push_back(MakeConstantString(iter->first.second, 1072630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner ".objc_sel_types")); 107320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Selectors.push_back(llvm::ConstantStruct::get(SelStructTy, Elements)); 107420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 107520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 107620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (llvm::StringMap<llvm::GlobalAlias*>::iterator 107720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter = UntypedSelectors.begin(), iterEnd = UntypedSelectors.end(); 1078630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner iter != iterEnd; ++iter) { 107920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back( 1080630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner MakeConstantString(iter->getKeyData(), ".objc_sel_name")); 108120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 108220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Selectors.push_back(llvm::ConstantStruct::get(SelStructTy, Elements)); 108320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 108420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 108520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 108620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 108720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Selectors.push_back(llvm::ConstantStruct::get(SelStructTy, Elements)); 108820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 108920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Number of static selectors 109020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(llvm::ConstantInt::get(LongTy, Selectors.size() )); 109120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SelectorList = MakeGlobal( 109220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ArrayType::get(SelStructTy, Selectors.size()), Selectors, 109320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ".objc_selector_list"); 1094e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner Elements.push_back(llvm::ConstantExpr::getBitCast(SelectorList, 1095e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner SelStructPtrTy)); 109620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 109720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Now that all of the static selectors exist, create pointers to them. 109820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov int index = 0; 109920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (std::map<TypedSelector, llvm::GlobalAlias*>::iterator 110020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter=TypedSelectors.begin(), iterEnd =TypedSelectors.end(); 110120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter != iterEnd; ++iter) { 110220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Idxs[] = {Zeros[0], 110320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ConstantInt::get(llvm::Type::Int32Ty, index++), Zeros[0]}; 11041c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson llvm::Constant *SelPtr = new llvm::GlobalVariable(TheModule, SelStructPtrTy, 11051c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson true, llvm::GlobalValue::InternalLinkage, 110620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ConstantExpr::getGetElementPtr(SelectorList, Idxs, 2), 11071c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson ".objc_sel_ptr"); 1108e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner // If selectors are defined as an opaque type, cast the pointer to this 1109e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner // type. 1110e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner if (isSelOpaque) { 1111e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner SelPtr = llvm::ConstantExpr::getBitCast(SelPtr, 1112e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner llvm::PointerType::getUnqual(SelectorTy)); 1113e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner } 111420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov (*iter).second->setAliasee(SelPtr); 111520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 111620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (llvm::StringMap<llvm::GlobalAlias*>::iterator 111720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter=UntypedSelectors.begin(), iterEnd = UntypedSelectors.end(); 111820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter != iterEnd; iter++) { 111920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Idxs[] = {Zeros[0], 112020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ConstantInt::get(llvm::Type::Int32Ty, index++), Zeros[0]}; 11211c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson llvm::Constant *SelPtr = new llvm::GlobalVariable(TheModule, SelStructPtrTy, 11221c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson true, llvm::GlobalValue::InternalLinkage, 112320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ConstantExpr::getGetElementPtr(SelectorList, Idxs, 2), 11241c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson ".objc_sel_ptr"); 1125e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner // If selectors are defined as an opaque type, cast the pointer to this 1126e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner // type. 1127e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner if (isSelOpaque) { 1128e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner SelPtr = llvm::ConstantExpr::getBitCast(SelPtr, 1129e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner llvm::PointerType::getUnqual(SelectorTy)); 1130e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner } 113120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov (*iter).second->setAliasee(SelPtr); 113220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 113320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Number of classes defined. 113420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(llvm::ConstantInt::get(llvm::Type::Int16Ty, 113520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.size())); 113620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Number of categories defined 113720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(llvm::ConstantInt::get(llvm::Type::Int16Ty, 113820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Categories.size())); 113920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an array of classes, then categories, then static object instances 114020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.insert(Classes.end(), Categories.begin(), Categories.end()); 114120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // NULL-terminated list of static object instances (mainly constant strings) 114220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.push_back(Statics); 114320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.push_back(NULLPtr); 114420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ClassList = llvm::ConstantArray::get(ClassListTy, Classes); 114520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ClassList); 114620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Construct the symbol table 114720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SymTab= MakeGlobal(SymTabTy, Elements); 114820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 114920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // The symbol table is contained in a module which has some version-checking 115020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // constants 115120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StructType * ModuleTy = llvm::StructType::get(LongTy, LongTy, 115220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, llvm::PointerType::getUnqual(SymTabTy), NULL); 115320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 115420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Runtime version used for compatibility checking. 11559cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian if (CGM.getContext().getLangOptions().ObjCNonFragileABI) { 11569cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian Elements.push_back(llvm::ConstantInt::get(LongTy, 11579cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian NonFragileRuntimeVersion)); 11589cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } else { 11599cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian Elements.push_back(llvm::ConstantInt::get(LongTy, RuntimeVersion)); 11609cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 116191a0b51438e5259a79d68d7450c453827beed9e2Fariborz Jahanian // sizeof(ModuleTy) 116291a0b51438e5259a79d68d7450c453827beed9e2Fariborz Jahanian llvm::TargetData td = llvm::TargetData::TargetData(&TheModule); 116391a0b51438e5259a79d68d7450c453827beed9e2Fariborz Jahanian Elements.push_back(llvm::ConstantInt::get(LongTy, td.getTypeSizeInBits(ModuleTy)/8)); 116420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov //FIXME: Should be the path to the file where this module was declared 116520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 116620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(SymTab); 116720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Value *Module = MakeGlobal(ModuleTy, Elements); 116820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 116920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create the load function calling the runtime entry point with the module 117020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // structure 117120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Function * LoadFunction = llvm::Function::Create( 1172b59761b2530bf54926bf67de11956f3820ac38d9Chris Lattner llvm::FunctionType::get(llvm::Type::VoidTy, false), 117320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::GlobalValue::InternalLinkage, ".objc_load_function", 117420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov &TheModule); 117520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::BasicBlock *EntryBB = llvm::BasicBlock::Create("entry", LoadFunction); 1176aac8705c046f01a264a4f82832895a5d9e695633Owen Anderson CGBuilderTy Builder(TheModule.getContext()); 117720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Builder.SetInsertPoint(EntryBB); 117826c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian 117926c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian std::vector<const llvm::Type*> Params(1, 118026c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian llvm::PointerType::getUnqual(ModuleTy)); 118126c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian llvm::Value *Register = CGM.CreateRuntimeFunction(llvm::FunctionType::get( 118226c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian llvm::Type::VoidTy, Params, true), "__objc_exec_class"); 118320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Builder.CreateCall(Register, Module); 118420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Builder.CreateRetVoid(); 11859cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian 118620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return LoadFunction; 118720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 11887ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 1189679a502d462ef819e6175b58e255ca3f3391e7cfFariborz Jahanianllvm::Function *CGObjCGNU::GenerateMethod(const ObjCMethodDecl *OMD, 1190679a502d462ef819e6175b58e255ca3f3391e7cfFariborz Jahanian const ObjCContainerDecl *CD) { 11917ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar const ObjCCategoryImplDecl *OCD = 11923e0a540b6d846178857289ec0eb8470a278d11a3Steve Naroff dyn_cast<ObjCCategoryImplDecl>(OMD->getDeclContext()); 1193077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner std::string CategoryName = OCD ? OCD->getNameAsString() : ""; 1194077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner std::string ClassName = OMD->getClassInterface()->getNameAsString(); 1195077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner std::string MethodName = OMD->getSelector().getAsString(); 1196f8d49f64ef6ab7e632717a31631fc289aab69428Douglas Gregor bool isClassMethod = !OMD->isInstanceMethod(); 1197391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner 1198541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel Dunbar CodeGenTypes &Types = CGM.getTypes(); 119945c25ba11cbf8c9a461def5b03f6ee9481e06769Daniel Dunbar const llvm::FunctionType *MethodTy = 1200541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel Dunbar Types.GetFunctionType(Types.getFunctionInfo(OMD), OMD->isVariadic()); 120120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::string FunctionName = SymbolNameForMethod(ClassName, CategoryName, 120220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov MethodName, isClassMethod); 120320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 1204984d0b414bc76d3530b9bc55a5a55834ba76c607Gabor Greif llvm::Function *Method = llvm::Function::Create(MethodTy, 1205391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner llvm::GlobalValue::InternalLinkage, 120620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov FunctionName, 1207391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner &TheModule); 1208391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner return Method; 1209391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner} 1210391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner 121149f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbarllvm::Function *CGObjCGNU::GetPropertyGetFunction() { 1212cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian std::vector<const llvm::Type*> Params; 1213cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian const llvm::Type *BoolTy = 1214cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian CGM.getTypes().ConvertType(CGM.getContext().BoolTy); 1215cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian Params.push_back(IdTy); 1216cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian Params.push_back(SelectorTy); 1217cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian // FIXME: Using LongTy for ptrdiff_t is probably broken on Win64 1218cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian Params.push_back(LongTy); 1219cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian Params.push_back(BoolTy); 1220cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian // void objc_getProperty (id, SEL, ptrdiff_t, bool) 1221cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian const llvm::FunctionType *FTy = 1222cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian llvm::FunctionType::get(IdTy, Params, false); 1223cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian return cast<llvm::Function>(CGM.CreateRuntimeFunction(FTy, 1224cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian "objc_getProperty")); 122549f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar} 122649f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar 122749f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbarllvm::Function *CGObjCGNU::GetPropertySetFunction() { 1228cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian std::vector<const llvm::Type*> Params; 1229cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian const llvm::Type *BoolTy = 1230cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian CGM.getTypes().ConvertType(CGM.getContext().BoolTy); 1231cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian Params.push_back(IdTy); 1232cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian Params.push_back(SelectorTy); 1233cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian // FIXME: Using LongTy for ptrdiff_t is probably broken on Win64 1234cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian Params.push_back(LongTy); 1235cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian Params.push_back(IdTy); 1236cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian Params.push_back(BoolTy); 1237cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian Params.push_back(BoolTy); 1238cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian // void objc_setProperty (id, SEL, ptrdiff_t, id, bool, bool) 1239cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian const llvm::FunctionType *FTy = 1240cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian llvm::FunctionType::get(llvm::Type::VoidTy, Params, false); 1241cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian return cast<llvm::Function>(CGM.CreateRuntimeFunction(FTy, 1242cb9dad0393a000bea87370c4d12faf3667ed22e5Fariborz Jahanian "objc_setProperty")); 124349f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar} 124449f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar 124549f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbarllvm::Function *CGObjCGNU::EnumerationMutationFunction() { 124626c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian std::vector<const llvm::Type*> Params(1, IdTy); 124726c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian return cast<llvm::Function>(CGM.CreateRuntimeFunction( 124826c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian llvm::FunctionType::get(llvm::Type::VoidTy, Params, true), 124926c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian "objc_enumerationMutation")); 12502abd89c039e835e84519a4cd8a7495899a70153dAnders Carlsson} 12512abd89c039e835e84519a4cd8a7495899a70153dAnders Carlsson 1252bd71be4683c195260d5245118b1e13e6b2e20504Fariborz Jahanianvoid CGObjCGNU::EmitTryOrSynchronizedStmt(CodeGen::CodeGenFunction &CGF, 1253bd71be4683c195260d5245118b1e13e6b2e20504Fariborz Jahanian const Stmt &S) { 12545dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Pointer to the personality function 12555dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Constant *Personality = 12565dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGM.CreateRuntimeFunction(llvm::FunctionType::get(llvm::Type::Int32Ty, 1257b59761b2530bf54926bf67de11956f3820ac38d9Chris Lattner true), 12585dc0867af17b3bd6f567897433853b2b4767446cChris Lattner "__gnu_objc_personality_v0"); 12595dc0867af17b3bd6f567897433853b2b4767446cChris Lattner Personality = llvm::ConstantExpr::getBitCast(Personality, PtrTy); 12605dc0867af17b3bd6f567897433853b2b4767446cChris Lattner std::vector<const llvm::Type*> Params; 12615dc0867af17b3bd6f567897433853b2b4767446cChris Lattner Params.push_back(PtrTy); 12625dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Value *RethrowFn = 12635dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGM.CreateRuntimeFunction(llvm::FunctionType::get(llvm::Type::VoidTy, 12645dc0867af17b3bd6f567897433853b2b4767446cChris Lattner Params, false), "_Unwind_Resume_or_Rethrow"); 12655dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 12665dc0867af17b3bd6f567897433853b2b4767446cChris Lattner bool isTry = isa<ObjCAtTryStmt>(S); 12675dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *TryBlock = CGF.createBasicBlock("try"); 12685dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *PrevLandingPad = CGF.getInvokeDest(); 12695dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *TryHandler = CGF.createBasicBlock("try.handler"); 1270d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner llvm::BasicBlock *CatchInCatch = CGF.createBasicBlock("catch.rethrow"); 12715dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *FinallyBlock = CGF.createBasicBlock("finally"); 12725dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *FinallyRethrow = CGF.createBasicBlock("finally.throw"); 12735dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *FinallyEnd = CGF.createBasicBlock("finally.end"); 12745dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 12755dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // GNU runtime does not currently support @synchronized() 12765dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (!isTry) { 1277d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner std::vector<const llvm::Type*> Args(1, IdTy); 1278d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner llvm::FunctionType *FTy = 1279d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner llvm::FunctionType::get(llvm::Type::VoidTy, Args, false); 1280d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner llvm::Value *SyncEnter = CGM.CreateRuntimeFunction(FTy, "objc_sync_enter"); 1281d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner llvm::Value *SyncArg = 1282d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.EmitScalarExpr(cast<ObjCAtSynchronizedStmt>(S).getSynchExpr()); 1283d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner SyncArg = CGF.Builder.CreateBitCast(SyncArg, IdTy); 1284d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.Builder.CreateCall(SyncEnter, SyncArg); 12855dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 12865dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 1287d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner 12885dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Push an EH context entry, used for handling rethrows and jumps 12895dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // through finally. 12905dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.PushCleanupBlock(FinallyBlock); 12915dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 12925dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Emit the statements in the @try {} block 12935dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.setInvokeDest(TryHandler); 12945dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 12955dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(TryBlock); 12965dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitStmt(isTry ? cast<ObjCAtTryStmt>(S).getTryBody() 12975dc0867af17b3bd6f567897433853b2b4767446cChris Lattner : cast<ObjCAtSynchronizedStmt>(S).getSynchBody()); 12985dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 12995dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Jump to @finally if there is no exception 13005dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBranchThroughCleanup(FinallyEnd); 13015dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 13025dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Emit the handlers 13035dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(TryHandler); 13045dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 1305bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner // Get the correct versions of the exception handling intrinsics 1306bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner llvm::TargetData td = llvm::TargetData::TargetData(&TheModule); 1307bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner int PointerWidth = td.getTypeSizeInBits(PtrTy); 1308bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner assert((PointerWidth == 32 || PointerWidth == 64) && 1309bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner "Can't yet handle exceptions if pointers are not 32 or 64 bits"); 13105dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Value *llvm_eh_exception = 13115dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.CGM.getIntrinsic(llvm::Intrinsic::eh_exception); 1312bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner llvm::Value *llvm_eh_selector = PointerWidth == 32 ? 1313bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner CGF.CGM.getIntrinsic(llvm::Intrinsic::eh_selector_i32) : 1314bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner CGF.CGM.getIntrinsic(llvm::Intrinsic::eh_selector_i64); 1315bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner llvm::Value *llvm_eh_typeid_for = PointerWidth == 32 ? 1316bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner CGF.CGM.getIntrinsic(llvm::Intrinsic::eh_typeid_for_i32) : 1317bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner CGF.CGM.getIntrinsic(llvm::Intrinsic::eh_typeid_for_i64); 13185dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 13195dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Exception object 13205dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Value *Exc = CGF.Builder.CreateCall(llvm_eh_exception, "exc"); 13215dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Value *RethrowPtr = CGF.CreateTempAlloca(Exc->getType(), "_rethrow"); 13225dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 13235dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::SmallVector<llvm::Value*, 8> ESelArgs; 13245dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::SmallVector<std::pair<const ParmVarDecl*, const Stmt*>, 8> Handlers; 13255dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 13265dc0867af17b3bd6f567897433853b2b4767446cChris Lattner ESelArgs.push_back(Exc); 13275dc0867af17b3bd6f567897433853b2b4767446cChris Lattner ESelArgs.push_back(Personality); 13285dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 13295dc0867af17b3bd6f567897433853b2b4767446cChris Lattner bool HasCatchAll = false; 13305dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Only @try blocks are allowed @catch blocks, but both can have @finally 13315dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (isTry) { 13325dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (const ObjCAtCatchStmt* CatchStmt = 13335dc0867af17b3bd6f567897433853b2b4767446cChris Lattner cast<ObjCAtTryStmt>(S).getCatchStmts()) { 1334d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.setInvokeDest(CatchInCatch); 13355dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 13365dc0867af17b3bd6f567897433853b2b4767446cChris Lattner for (; CatchStmt; CatchStmt = CatchStmt->getNextCatchStmt()) { 13375dc0867af17b3bd6f567897433853b2b4767446cChris Lattner const ParmVarDecl *CatchDecl = CatchStmt->getCatchParamDecl(); 13385dc0867af17b3bd6f567897433853b2b4767446cChris Lattner Handlers.push_back(std::make_pair(CatchDecl, CatchStmt->getCatchBody())); 13395dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 13405dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // @catch() and @catch(id) both catch any ObjC exception 134114108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff if (!CatchDecl || CatchDecl->getType()->isObjCIdType() 13425dc0867af17b3bd6f567897433853b2b4767446cChris Lattner || CatchDecl->getType()->isObjCQualifiedIdType()) { 13435dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Use i8* null here to signal this is a catch all, not a cleanup. 13445dc0867af17b3bd6f567897433853b2b4767446cChris Lattner ESelArgs.push_back(NULLPtr); 13455dc0867af17b3bd6f567897433853b2b4767446cChris Lattner HasCatchAll = true; 13465dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // No further catches after this one will ever by reached 13475dc0867af17b3bd6f567897433853b2b4767446cChris Lattner break; 13485dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 13495dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 13505dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // All other types should be Objective-C interface pointer types. 135114108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff const ObjCObjectPointerType *OPT = 135214108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff CatchDecl->getType()->getAsObjCObjectPointerType(); 135314108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff assert(OPT && "Invalid @catch type."); 13545dc0867af17b3bd6f567897433853b2b4767446cChris Lattner const ObjCInterfaceType *IT = 135514108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff OPT->getPointeeType()->getAsObjCInterfaceType(); 13565dc0867af17b3bd6f567897433853b2b4767446cChris Lattner assert(IT && "Invalid @catch type."); 1357bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner llvm::Value *EHType = 1358bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner MakeConstantString(IT->getDecl()->getNameAsString()); 13595dc0867af17b3bd6f567897433853b2b4767446cChris Lattner ESelArgs.push_back(EHType); 13605dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 13615dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 13625dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 13635dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 13645dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // We use a cleanup unless there was already a catch all. 13655dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (!HasCatchAll) { 13665dc0867af17b3bd6f567897433853b2b4767446cChris Lattner ESelArgs.push_back(llvm::ConstantInt::get(llvm::Type::Int32Ty, 0)); 13675dc0867af17b3bd6f567897433853b2b4767446cChris Lattner Handlers.push_back(std::make_pair((const ParmVarDecl*) 0, (const Stmt*) 0)); 13685dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 13695dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 13705dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Find which handler was matched. 1371bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner llvm::Value *ESelector = CGF.Builder.CreateCall(llvm_eh_selector, 13725dc0867af17b3bd6f567897433853b2b4767446cChris Lattner ESelArgs.begin(), ESelArgs.end(), "selector"); 13735dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 13745dc0867af17b3bd6f567897433853b2b4767446cChris Lattner for (unsigned i = 0, e = Handlers.size(); i != e; ++i) { 13755dc0867af17b3bd6f567897433853b2b4767446cChris Lattner const ParmVarDecl *CatchParam = Handlers[i].first; 13765dc0867af17b3bd6f567897433853b2b4767446cChris Lattner const Stmt *CatchBody = Handlers[i].second; 13775dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 13785dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *Next = 0; 13795dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 13805dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // The last handler always matches. 13815dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (i + 1 != e) { 13825dc0867af17b3bd6f567897433853b2b4767446cChris Lattner assert(CatchParam && "Only last handler can be a catch all."); 13835dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 13845dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Test whether this block matches the type for the selector and branch 13855dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // to Match if it does, or to the next BB if it doesn't. 13865dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *Match = CGF.createBasicBlock("match"); 13875dc0867af17b3bd6f567897433853b2b4767446cChris Lattner Next = CGF.createBasicBlock("catch.next"); 1388bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner llvm::Value *Id = CGF.Builder.CreateCall(llvm_eh_typeid_for, 13895dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateBitCast(ESelArgs[i+2], PtrTy)); 13905dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateCondBr(CGF.Builder.CreateICmpEQ(ESelector, Id), Match, 13915dc0867af17b3bd6f567897433853b2b4767446cChris Lattner Next); 13925dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 13935dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(Match); 13945dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 13955dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 13965dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (CatchBody) { 13975dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Value *ExcObject = CGF.Builder.CreateBitCast(Exc, 13985dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.ConvertType(CatchParam->getType())); 13995dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 14005dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Bind the catch parameter if it exists. 14015dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (CatchParam) { 14025dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // CatchParam is a ParmVarDecl because of the grammar 14035dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // construction used to handle this, but for codegen purposes 14045dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // we treat this as a local decl. 14055dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitLocalBlockVarDecl(*CatchParam); 14065dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateStore(ExcObject, CGF.GetAddrOfLocalVar(CatchParam)); 14075dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 14085dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 14095dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.ObjCEHValueStack.push_back(ExcObject); 14105dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitStmt(CatchBody); 14115dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.ObjCEHValueStack.pop_back(); 14125dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 14135dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBranchThroughCleanup(FinallyEnd); 14145dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 14155dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (Next) 14165dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(Next); 14175dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } else { 14185dc0867af17b3bd6f567897433853b2b4767446cChris Lattner assert(!Next && "catchup should be last handler."); 14195dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 14205dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateStore(Exc, RethrowPtr); 14215dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBranchThroughCleanup(FinallyRethrow); 14225dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 14235dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 1424d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner // The @finally block is a secondary landing pad for any exceptions thrown in 1425d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner // @catch() blocks 1426d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.EmitBlock(CatchInCatch); 1427d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner Exc = CGF.Builder.CreateCall(llvm_eh_exception, "exc"); 1428d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner ESelArgs.clear(); 1429d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner ESelArgs.push_back(Exc); 1430d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner ESelArgs.push_back(Personality); 1431d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner ESelArgs.push_back(llvm::ConstantInt::get(llvm::Type::Int32Ty, 0)); 1432d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.Builder.CreateCall(llvm_eh_selector, ESelArgs.begin(), ESelArgs.end(), 1433d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner "selector"); 1434d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.Builder.CreateCall(llvm_eh_typeid_for, 1435d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.Builder.CreateIntToPtr(ESelArgs[2], PtrTy)); 1436d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.Builder.CreateStore(Exc, RethrowPtr); 1437d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.EmitBranchThroughCleanup(FinallyRethrow); 1438d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner 14395dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CodeGenFunction::CleanupBlockInfo Info = CGF.PopCleanupBlock(); 14405dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 14415dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.setInvokeDest(PrevLandingPad); 14425dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 14435dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(FinallyBlock); 14445dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 1445d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner 14465dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (isTry) { 14475dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (const ObjCAtFinallyStmt* FinallyStmt = 14485dc0867af17b3bd6f567897433853b2b4767446cChris Lattner cast<ObjCAtTryStmt>(S).getFinallyStmt()) 14495dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitStmt(FinallyStmt->getFinallyBody()); 14505dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } else { 1451d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner // Emit 'objc_sync_exit(expr)' as finally's sole statement for 14525dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // @synchronized. 1453d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner std::vector<const llvm::Type*> Args(1, IdTy); 1454d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner llvm::FunctionType *FTy = 1455d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner llvm::FunctionType::get(llvm::Type::VoidTy, Args, false); 1456d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner llvm::Value *SyncExit = CGM.CreateRuntimeFunction(FTy, "objc_sync_exit"); 1457d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner llvm::Value *SyncArg = 1458d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.EmitScalarExpr(cast<ObjCAtSynchronizedStmt>(S).getSynchExpr()); 1459d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner SyncArg = CGF.Builder.CreateBitCast(SyncArg, IdTy); 1460d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.Builder.CreateCall(SyncExit, SyncArg); 14615dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 14625dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 14635dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (Info.SwitchBlock) 14645dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(Info.SwitchBlock); 14655dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (Info.EndBlock) 14665dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(Info.EndBlock); 14675dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 14685dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Branch around the rethrow code. 14695dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBranch(FinallyEnd); 14705dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 14715dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(FinallyRethrow); 14725dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateCall(RethrowFn, CGF.Builder.CreateLoad(RethrowPtr)); 14735dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateUnreachable(); 14745dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 14755dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(FinallyEnd); 14765dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 147764d5d6c5903157c521af496479d06dc26032d718Anders Carlsson} 147864d5d6c5903157c521af496479d06dc26032d718Anders Carlsson 147964d5d6c5903157c521af496479d06dc26032d718Anders Carlssonvoid CGObjCGNU::EmitThrowStmt(CodeGen::CodeGenFunction &CGF, 148049f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar const ObjCAtThrowStmt &S) { 14815dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Value *ExceptionAsObject; 14825dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 14835dc0867af17b3bd6f567897433853b2b4767446cChris Lattner std::vector<const llvm::Type*> Args(1, IdTy); 14845dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::FunctionType *FTy = 14855dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::FunctionType::get(llvm::Type::VoidTy, Args, false); 14865dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Value *ThrowFn = 14875dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGM.CreateRuntimeFunction(FTy, "objc_exception_throw"); 14885dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 14895dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (const Expr *ThrowExpr = S.getThrowExpr()) { 14905dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Value *Exception = CGF.EmitScalarExpr(ThrowExpr); 14911e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian ExceptionAsObject = Exception; 14925dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } else { 14935dc0867af17b3bd6f567897433853b2b4767446cChris Lattner assert((!CGF.ObjCEHValueStack.empty() && CGF.ObjCEHValueStack.back()) && 14945dc0867af17b3bd6f567897433853b2b4767446cChris Lattner "Unexpected rethrow outside @catch block."); 14955dc0867af17b3bd6f567897433853b2b4767446cChris Lattner ExceptionAsObject = CGF.ObjCEHValueStack.back(); 14965dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 14971e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian ExceptionAsObject = 14981e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian CGF.Builder.CreateBitCast(ExceptionAsObject, IdTy, "tmp"); 14995dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 15005dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Note: This may have to be an invoke, if we want to support constructs like: 15015dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // @try { 15025dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // @throw(obj); 15035dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // } 15045dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // @catch(id) ... 15055dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // 15065dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // This is effectively turning @throw into an incredibly-expensive goto, but 15075dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // it may happen as a result of inlining followed by missed optimizations, or 15085dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // as a result of stupidity. 15095dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *UnwindBB = CGF.getInvokeDest(); 15105dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (!UnwindBB) { 15115dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateCall(ThrowFn, ExceptionAsObject); 15125dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateUnreachable(); 15135dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } else { 15145dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateInvoke(ThrowFn, UnwindBB, UnwindBB, &ExceptionAsObject, 15155dc0867af17b3bd6f567897433853b2b4767446cChris Lattner &ExceptionAsObject+1); 15165dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 15175dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Clear the insertion point to indicate we are in unreachable code. 15185dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.ClearInsertionPoint(); 151964d5d6c5903157c521af496479d06dc26032d718Anders Carlsson} 152064d5d6c5903157c521af496479d06dc26032d718Anders Carlsson 15213e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanianllvm::Value * CGObjCGNU::EmitObjCWeakRead(CodeGen::CodeGenFunction &CGF, 15226dc2317b59cb1180a59f6c283d96b7a5dfeb5307Fariborz Jahanian llvm::Value *AddrWeakObj) 15236dc2317b59cb1180a59f6c283d96b7a5dfeb5307Fariborz Jahanian{ 15246dc2317b59cb1180a59f6c283d96b7a5dfeb5307Fariborz Jahanian return 0; 15256dc2317b59cb1180a59f6c283d96b7a5dfeb5307Fariborz Jahanian} 15266dc2317b59cb1180a59f6c283d96b7a5dfeb5307Fariborz Jahanian 15273e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanianvoid CGObjCGNU::EmitObjCWeakAssign(CodeGen::CodeGenFunction &CGF, 15283e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian llvm::Value *src, llvm::Value *dst) 15293e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian{ 15303e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian return; 15313e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian} 15323e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian 153358626500527695865683d1d65053743de8770b60Fariborz Jahanianvoid CGObjCGNU::EmitObjCGlobalAssign(CodeGen::CodeGenFunction &CGF, 153458626500527695865683d1d65053743de8770b60Fariborz Jahanian llvm::Value *src, llvm::Value *dst) 153558626500527695865683d1d65053743de8770b60Fariborz Jahanian{ 153658626500527695865683d1d65053743de8770b60Fariborz Jahanian return; 153758626500527695865683d1d65053743de8770b60Fariborz Jahanian} 153858626500527695865683d1d65053743de8770b60Fariborz Jahanian 15397eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanianvoid CGObjCGNU::EmitObjCIvarAssign(CodeGen::CodeGenFunction &CGF, 15407eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanian llvm::Value *src, llvm::Value *dst) 15417eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanian{ 15427eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanian return; 15437eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanian} 15447eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanian 154558626500527695865683d1d65053743de8770b60Fariborz Jahanianvoid CGObjCGNU::EmitObjCStrongCastAssign(CodeGen::CodeGenFunction &CGF, 154658626500527695865683d1d65053743de8770b60Fariborz Jahanian llvm::Value *src, llvm::Value *dst) 154758626500527695865683d1d65053743de8770b60Fariborz Jahanian{ 154858626500527695865683d1d65053743de8770b60Fariborz Jahanian return; 154958626500527695865683d1d65053743de8770b60Fariborz Jahanian} 155058626500527695865683d1d65053743de8770b60Fariborz Jahanian 1551082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanianvoid CGObjCGNU::EmitGCMemmoveCollectable(CodeGen::CodeGenFunction &CGF, 1552082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian llvm::Value *DestPtr, 1553082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian llvm::Value *SrcPtr, 1554082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian unsigned long size) { 1555082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian return; 1556082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian} 1557082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian 15589cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanianllvm::GlobalVariable *CGObjCGNU::ObjCIvarOffsetVariable( 15599cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCInterfaceDecl *ID, 15609cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCIvarDecl *Ivar) { 15619cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const std::string Name = "__objc_ivar_offset_" + ID->getNameAsString() 15629cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian + '.' + Ivar->getNameAsString(); 15639cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // Emit the variable and initialize it with what we think the correct value 15649cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // is. This allows code compiled with non-fragile ivars to work correctly 15659cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // when linked against code which isn't (most of the time). 15669cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian llvm::GlobalVariable *IvarOffsetGV = CGM.getModule().getGlobalVariable(Name); 15679cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian if (!IvarOffsetGV) { 15689cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian uint64_t Offset = ComputeIvarBaseOffset(CGM, ID, Ivar); 15699cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian llvm::ConstantInt *OffsetGuess = 15709cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian llvm::ConstantInt::get(LongTy, Offset, "ivar"); 15711c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson IvarOffsetGV = new llvm::GlobalVariable(TheModule, LongTy, false, 15721c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson llvm::GlobalValue::CommonLinkage, OffsetGuess, Name); 15739cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 15749cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian return IvarOffsetGV; 15759cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian} 15769cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian 1577598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz JahanianLValue CGObjCGNU::EmitObjCValueForIvar(CodeGen::CodeGenFunction &CGF, 1578598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian QualType ObjectTy, 1579598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian llvm::Value *BaseValue, 1580598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian const ObjCIvarDecl *Ivar, 1581598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian unsigned CVRQualifiers) { 1582525c9b7baeeff022127cd1b167579f3bda73b3edDaniel Dunbar const ObjCInterfaceDecl *ID = ObjectTy->getAsObjCInterfaceType()->getDecl(); 15839777687562c338601c2f17906e65e1c1a0aad96fDaniel Dunbar return EmitValueForIvarAtOffset(CGF, ID, BaseValue, Ivar, CVRQualifiers, 15849777687562c338601c2f17906e65e1c1a0aad96fDaniel Dunbar EmitIvarOffset(CGF, ID, Ivar)); 15850bb20361a321593887f067515dd04cf109f4c74aFariborz Jahanian} 15869cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanianstatic const ObjCInterfaceDecl *FindIvarInterface(ASTContext &Context, 15879cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCInterfaceDecl *OID, 15889cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCIvarDecl *OIVD) { 15899cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian llvm::SmallVector<ObjCIvarDecl*, 16> Ivars; 15908e6ac1d80055fa37b9b84029c7e751624ba7f84cFariborz Jahanian Context.ShallowCollectObjCIvars(OID, Ivars); 15919cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian for (unsigned k = 0, e = Ivars.size(); k != e; ++k) { 15929cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian if (OIVD == Ivars[k]) 15939cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian return OID; 15949cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 15959cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian 15969cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // Otherwise check in the super class. 15979cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian if (const ObjCInterfaceDecl *Super = OID->getSuperClass()) 15989cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian return FindIvarInterface(Context, Super, OIVD); 15999cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian 16009cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian return 0; 16019cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian} 16020bb20361a321593887f067515dd04cf109f4c74aFariborz Jahanian 1603f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanianllvm::Value *CGObjCGNU::EmitIvarOffset(CodeGen::CodeGenFunction &CGF, 16042a03192a02dbf4fdff438d1e658356bde871aba4Daniel Dunbar const ObjCInterfaceDecl *Interface, 1605f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian const ObjCIvarDecl *Ivar) { 16069cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian if (CGF.getContext().getLangOptions().ObjCNonFragileABI) 16079cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian { 16089cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian Interface = FindIvarInterface(CGM.getContext(), Interface, Ivar); 16099cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian return CGF.Builder.CreateLoad(ObjCIvarOffsetVariable(Interface, Ivar), 16109cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian false, "ivar"); 16119cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 16129777687562c338601c2f17906e65e1c1a0aad96fDaniel Dunbar uint64_t Offset = ComputeIvarBaseOffset(CGF.CGM, Interface, Ivar); 16139cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian return llvm::ConstantInt::get(LongTy, Offset, "ivar"); 1614f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian} 1615f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian 1616c17a4d3b16a2624a76de5d7508805534545bd3bfDaniel DunbarCodeGen::CGObjCRuntime *CodeGen::CreateGNUObjCRuntime(CodeGen::CodeGenModule &CGM){ 1617dce1406f1c1f572cfd61c494546572d63461c741Chris Lattner return new CGObjCGNU(CGM); 16180f984268b05edab2cc555a427c441baa9c252658Chris Lattner} 1619