CGObjCGNU.cpp revision 0d36dd28bb40b08a93d7f64196794882eee08ee8
120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov//===------- CGObjCGNU.cpp - Emit LLVM Code from ASTs for a Module --------===// 20f984268b05edab2cc555a427c441baa9c252658Chris Lattner// 30f984268b05edab2cc555a427c441baa9c252658Chris Lattner// The LLVM Compiler Infrastructure 40f984268b05edab2cc555a427c441baa9c252658Chris Lattner// 50f984268b05edab2cc555a427c441baa9c252658Chris Lattner// This file is distributed under the University of Illinois Open Source 60f984268b05edab2cc555a427c441baa9c252658Chris Lattner// License. See LICENSE.TXT for details. 70f984268b05edab2cc555a427c441baa9c252658Chris Lattner// 80f984268b05edab2cc555a427c441baa9c252658Chris Lattner//===----------------------------------------------------------------------===// 90f984268b05edab2cc555a427c441baa9c252658Chris Lattner// 1020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// This provides Objective-C code generation targetting the GNU runtime. The 1120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// class in this file generates structures used by the GNU Objective-C runtime 1220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// library. These structures are defined in objc/objc.h and objc/objc-api.h in 1320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// the GNU runtime distribution. 140f984268b05edab2cc555a427c441baa9c252658Chris Lattner// 150f984268b05edab2cc555a427c441baa9c252658Chris Lattner//===----------------------------------------------------------------------===// 160f984268b05edab2cc555a427c441baa9c252658Chris Lattner 170f984268b05edab2cc555a427c441baa9c252658Chris Lattner#include "CGObjCRuntime.h" 18dce1406f1c1f572cfd61c494546572d63461c741Chris Lattner#include "CodeGenModule.h" 198f2926b73ed635afecd020da787af6a837601a2bDaniel Dunbar#include "CodeGenFunction.h" 205dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 21dce1406f1c1f572cfd61c494546572d63461c741Chris Lattner#include "clang/AST/ASTContext.h" 22e91593ef084479340582b2ba177b44be50a717b7Daniel Dunbar#include "clang/AST/Decl.h" 23af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar#include "clang/AST/DeclObjC.h" 2419cc4abea06a9b49e0e16a50d335c064cd723572Anders Carlsson#include "clang/AST/RecordLayout.h" 2516f0049415ec596504891259e2a83e19871c0d52Chris Lattner#include "clang/AST/StmtObjC.h" 265dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 275dc0867af17b3bd6f567897433853b2b4767446cChris Lattner#include "llvm/Intrinsics.h" 280f984268b05edab2cc555a427c441baa9c252658Chris Lattner#include "llvm/Module.h" 290f984268b05edab2cc555a427c441baa9c252658Chris Lattner#include "llvm/ADT/SmallVector.h" 3020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov#include "llvm/ADT/StringMap.h" 317ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar#include "llvm/Support/Compiler.h" 327ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar#include "llvm/Target/TargetData.h" 335dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 3420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov#include <map> 35e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner 36e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner 37dce1406f1c1f572cfd61c494546572d63461c741Chris Lattnerusing namespace clang; 3846f45b9bec4a265ad8400a538e5ec3a5683617f1Daniel Dunbarusing namespace CodeGen; 3920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovusing llvm::dyn_cast; 4020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 4120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// The version of the runtime that this class targets. Must match the version 4220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// in the runtime. 4320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovstatic const int RuntimeVersion = 8; 449cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanianstatic const int NonFragileRuntimeVersion = 9; 4520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovstatic const int ProtocolVersion = 2; 46d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanianstatic const int NonFragileProtocolVersion = 3; 470f984268b05edab2cc555a427c441baa9c252658Chris Lattner 480f984268b05edab2cc555a427c441baa9c252658Chris Lattnernamespace { 49dce1406f1c1f572cfd61c494546572d63461c741Chris Lattnerclass CGObjCGNU : public CodeGen::CGObjCRuntime { 500f984268b05edab2cc555a427c441baa9c252658Chris Lattnerprivate: 51dce1406f1c1f572cfd61c494546572d63461c741Chris Lattner CodeGen::CodeGenModule &CGM; 520f984268b05edab2cc555a427c441baa9c252658Chris Lattner llvm::Module &TheModule; 53e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::PointerType *SelectorTy; 54d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian const llvm::IntegerType *Int8Ty; 55e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::PointerType *PtrToInt8Ty; 56b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian const llvm::FunctionType *IMPTy; 57e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::PointerType *IdTy; 580f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall QualType ASTIdTy; 59e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::IntegerType *IntTy; 60e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::PointerType *PtrTy; 61e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::IntegerType *LongTy; 62e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::PointerType *PtrToIntTy; 635efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar llvm::GlobalAlias *ClassPtrAlias; 645efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar llvm::GlobalAlias *MetaClassPtrAlias; 6520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Classes; 6620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Categories; 6720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> ConstantStrings; 6820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Function *LoadFunction; 6920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StringMap<llvm::Constant*> ExistingProtocols; 7020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov typedef std::pair<std::string, std::string> TypedSelector; 7120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::map<TypedSelector, llvm::GlobalAlias*> TypedSelectors; 7220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StringMap<llvm::GlobalAlias*> UntypedSelectors; 7320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Some zeros used for GEPs in lots of places. 7420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Zeros[2]; 7520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *NULLPtr; 76a1cf15f4680e5cf39e72e28c5ea854fcba792e84Owen Anderson llvm::LLVMContext &VMContext; 7720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovprivate: 7820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateIvarList( 7920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarNames, 8020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarTypes, 8120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarOffsets); 8220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateMethodList(const std::string &ClassName, 8320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const std::string &CategoryName, 841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const llvm::SmallVectorImpl<Selector> &MethodSels, 851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const llvm::SmallVectorImpl<llvm::Constant *> &MethodTypes, 8620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov bool isClassMethodList); 87f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::Constant *GenerateEmptyProtocol(const std::string &ProtocolName); 88d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *GeneratePropertyList(const ObjCImplementationDecl *OID, 89d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::SmallVectorImpl<Selector> &InstanceMethodSels, 90d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::SmallVectorImpl<llvm::Constant*> &InstanceMethodTypes); 9120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateProtocolList( 9220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<std::string> &Protocols); 93d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // To ensure that all protocols are seen by the runtime, we add a category on 94d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // a class defined in the runtime, declaring no methods, but adopting the 95d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // protocols. 96d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian void GenerateProtocolHolderCategory(void); 9720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateClassStructure( 9820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MetaClass, 9920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SuperClass, 10020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov unsigned info, 101d002cc6fc5b72bf00e3b7b4571ccf0f23c789b4bChris Lattner const char *Name, 10220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Version, 10320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *InstanceSize, 10420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *IVars, 10520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Methods, 106d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *Protocols, 107d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *IvarOffsets, 108d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *Properties); 10920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateProtocolMethodList( 11020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &MethodNames, 11120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &MethodTypes); 11220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MakeConstantString(const std::string &Str, const std::string 11320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov &Name=""); 114d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *ExportUniqueString(const std::string &Str, const std::string 115d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian prefix); 11620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MakeGlobal(const llvm::StructType *Ty, 11720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> &V, const std::string &Name=""); 11820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MakeGlobal(const llvm::ArrayType *Ty, 11920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> &V, const std::string &Name=""); 1209cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian llvm::GlobalVariable *ObjCIvarOffsetVariable(const ObjCInterfaceDecl *ID, 1219cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCIvarDecl *Ivar); 1222a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner void EmitClassRef(const std::string &className); 1230f984268b05edab2cc555a427c441baa9c252658Chris Lattnerpublic: 124dce1406f1c1f572cfd61c494546572d63461c741Chris Lattner CGObjCGNU(CodeGen::CodeGenModule &cgm); 12533fdb738a6c125f4c788733897021b7c1a062b0cSteve Naroff virtual llvm::Constant *GenerateConstantString(const ObjCStringLiteral *); 1261eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump virtual CodeGen::RValue 1278f2926b73ed635afecd020da787af6a837601a2bDaniel Dunbar GenerateMessageSend(CodeGen::CodeGenFunction &CGF, 1287f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar QualType ResultType, 1297f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar Selector Sel, 130f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar llvm::Value *Receiver, 13119cd87eb5fb3c197e631ce08fd52c446c4d4e8f1Daniel Dunbar bool IsClassMessage, 132df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian const CallArgList &CallArgs, 133df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian const ObjCMethodDecl *Method); 1341eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump virtual CodeGen::RValue 1358f2926b73ed635afecd020da787af6a837601a2bDaniel Dunbar GenerateMessageSendSuper(CodeGen::CodeGenFunction &CGF, 1367f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar QualType ResultType, 1377f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar Selector Sel, 138f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar const ObjCInterfaceDecl *Class, 1397ce77920a35060f1c8dd72e541e42ce296ccd168Fariborz Jahanian bool isCategoryImpl, 140f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar llvm::Value *Receiver, 14119cd87eb5fb3c197e631ce08fd52c446c4d4e8f1Daniel Dunbar bool IsClassMessage, 142d6c93d703541c992e06eb9a59a2d826a30da65b2Daniel Dunbar const CallArgList &CallArgs, 143d6c93d703541c992e06eb9a59a2d826a30da65b2Daniel Dunbar const ObjCMethodDecl *Method); 14445d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbar virtual llvm::Value *GetClass(CGBuilderTy &Builder, 145ddb2a3d55a24a1dbdf9152621642d9a4b4fc2f61Daniel Dunbar const ObjCInterfaceDecl *OID); 14645d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbar virtual llvm::Value *GetSelector(CGBuilderTy &Builder, Selector Sel); 147df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian virtual llvm::Value *GetSelector(CGBuilderTy &Builder, const ObjCMethodDecl 148df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian *Method); 1491eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1501eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump virtual llvm::Function *GenerateMethod(const ObjCMethodDecl *OMD, 151679a502d462ef819e6175b58e255ca3f3391e7cfFariborz Jahanian const ObjCContainerDecl *CD); 1527ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar virtual void GenerateCategory(const ObjCCategoryImplDecl *CMD); 1537ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar virtual void GenerateClass(const ObjCImplementationDecl *ClassDecl); 15445d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbar virtual llvm::Value *GenerateProtocolRef(CGBuilderTy &Builder, 155af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar const ObjCProtocolDecl *PD); 156af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar virtual void GenerateProtocol(const ObjCProtocolDecl *PD); 15720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov virtual llvm::Function *ModuleInitFunction(); 15849f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar virtual llvm::Function *GetPropertyGetFunction(); 15949f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar virtual llvm::Function *GetPropertySetFunction(); 160309a4368cd299cff30ab22709e2b772cf8059e45Daniel Dunbar virtual llvm::Constant *EnumerationMutationFunction(); 1611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 162bd71be4683c195260d5245118b1e13e6b2e20504Fariborz Jahanian virtual void EmitTryOrSynchronizedStmt(CodeGen::CodeGenFunction &CGF, 163bd71be4683c195260d5245118b1e13e6b2e20504Fariborz Jahanian const Stmt &S); 16464d5d6c5903157c521af496479d06dc26032d718Anders Carlsson virtual void EmitThrowStmt(CodeGen::CodeGenFunction &CGF, 16564d5d6c5903157c521af496479d06dc26032d718Anders Carlsson const ObjCAtThrowStmt &S); 1663e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian virtual llvm::Value * EmitObjCWeakRead(CodeGen::CodeGenFunction &CGF, 1676dc2317b59cb1180a59f6c283d96b7a5dfeb5307Fariborz Jahanian llvm::Value *AddrWeakObj); 1683e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian virtual void EmitObjCWeakAssign(CodeGen::CodeGenFunction &CGF, 1693e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian llvm::Value *src, llvm::Value *dst); 17058626500527695865683d1d65053743de8770b60Fariborz Jahanian virtual void EmitObjCGlobalAssign(CodeGen::CodeGenFunction &CGF, 17158626500527695865683d1d65053743de8770b60Fariborz Jahanian llvm::Value *src, llvm::Value *dest); 1727eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanian virtual void EmitObjCIvarAssign(CodeGen::CodeGenFunction &CGF, 1737eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanian llvm::Value *src, llvm::Value *dest); 17458626500527695865683d1d65053743de8770b60Fariborz Jahanian virtual void EmitObjCStrongCastAssign(CodeGen::CodeGenFunction &CGF, 17558626500527695865683d1d65053743de8770b60Fariborz Jahanian llvm::Value *src, llvm::Value *dest); 176082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian virtual void EmitGCMemmoveCollectable(CodeGen::CodeGenFunction &CGF, 1771eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *DestPtr, 178082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian llvm::Value *SrcPtr, 17908c321380fff07d476a19daab6d29522c046cd49Fariborz Jahanian QualType Ty); 180598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian virtual LValue EmitObjCValueForIvar(CodeGen::CodeGenFunction &CGF, 181598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian QualType ObjectTy, 182598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian llvm::Value *BaseValue, 183598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian const ObjCIvarDecl *Ivar, 184598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian unsigned CVRQualifiers); 185f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian virtual llvm::Value *EmitIvarOffset(CodeGen::CodeGenFunction &CGF, 1862a03192a02dbf4fdff438d1e658356bde871aba4Daniel Dunbar const ObjCInterfaceDecl *Interface, 187f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian const ObjCIvarDecl *Ivar); 1880f984268b05edab2cc555a427c441baa9c252658Chris Lattner}; 1890f984268b05edab2cc555a427c441baa9c252658Chris Lattner} // end anonymous namespace 1900f984268b05edab2cc555a427c441baa9c252658Chris Lattner 19120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 1922a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner/// Emits a reference to a dummy variable which is emitted with each class. 1932a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner/// This ensures that a linker error will be generated when trying to link 1942a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner/// together modules where a referenced class is not defined. 195bb1c8600218b3244340331165fc7cba7bf227655Mike Stumpvoid CGObjCGNU::EmitClassRef(const std::string &className) { 1962a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner std::string symbolRef = "__objc_class_ref_" + className; 1972a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner // Don't emit two copies of the same symbol 198bb1c8600218b3244340331165fc7cba7bf227655Mike Stump if (TheModule.getGlobalVariable(symbolRef)) 199bb1c8600218b3244340331165fc7cba7bf227655Mike Stump return; 2002a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner std::string symbolName = "__objc_class_name_" + className; 2012a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner llvm::GlobalVariable *ClassSymbol = TheModule.getGlobalVariable(symbolName); 2022a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner if (!ClassSymbol) { 2031c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson ClassSymbol = new llvm::GlobalVariable(TheModule, LongTy, false, 2041c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson llvm::GlobalValue::ExternalLinkage, 0, symbolName); 2052a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner } 2061c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson new llvm::GlobalVariable(TheModule, ClassSymbol->getType(), true, 207f35271b8677a5f31498b89587b1da42a06dd46fdChris Lattner llvm::GlobalValue::WeakAnyLinkage, ClassSymbol, symbolRef); 2082a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner} 20920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 21020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovstatic std::string SymbolNameForClass(const std::string &ClassName) { 2112a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner return "_OBJC_CLASS_" + ClassName; 21220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 21320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 214d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanianstatic std::string SymbolNameForMethod(const std::string &ClassName, const 215d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::string &CategoryName, const std::string &MethodName, bool isClassMethod) 216d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian{ 2172a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner return "_OBJC_METHOD_" + ClassName + "("+CategoryName+")"+ 21820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov (isClassMethod ? "+" : "-") + MethodName; 21920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 22020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 221dce1406f1c1f572cfd61c494546572d63461c741Chris LattnerCGObjCGNU::CGObjCGNU(CodeGen::CodeGenModule &cgm) 2225efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar : CGM(cgm), TheModule(CGM.getModule()), ClassPtrAlias(0), 223a1cf15f4680e5cf39e72e28c5ea854fcba792e84Owen Anderson MetaClassPtrAlias(0), VMContext(cgm.getLLVMContext()) { 224e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner IntTy = cast<llvm::IntegerType>( 225e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner CGM.getTypes().ConvertType(CGM.getContext().IntTy)); 226e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner LongTy = cast<llvm::IntegerType>( 227e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner CGM.getTypes().ConvertType(CGM.getContext().LongTy)); 2281eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 229d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Int8Ty = llvm::Type::getInt8Ty(VMContext); 230d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // C string type. Used in lots of places. 231d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrToInt8Ty = llvm::PointerType::getUnqual(Int8Ty); 232d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 2334a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Zeros[0] = llvm::ConstantInt::get(LongTy, 0); 23420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Zeros[1] = Zeros[0]; 235d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian NULLPtr = llvm::ConstantPointerNull::get(PtrToInt8Ty); 236391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner // Get the selector Type. 237e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner SelectorTy = cast<llvm::PointerType>( 238e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner CGM.getTypes().ConvertType(CGM.getContext().getObjCSelType())); 239e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner 24096e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson PtrToIntTy = llvm::PointerType::getUnqual(IntTy); 241391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner PtrTy = PtrToInt8Ty; 2421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 243391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner // Object type 2440f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall ASTIdTy = CGM.getContext().getObjCIdType(); 2450f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall IdTy = cast<llvm::PointerType>(CGM.getTypes().ConvertType(ASTIdTy)); 2461eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 247391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner // IMP type 248391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner std::vector<const llvm::Type*> IMPArgs; 249391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner IMPArgs.push_back(IdTy); 250391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner IMPArgs.push_back(SelectorTy); 25196e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson IMPTy = llvm::FunctionType::get(IdTy, IMPArgs, true); 25220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 253bb1c8600218b3244340331165fc7cba7bf227655Mike Stump 25420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// This has to perform the lookup every time, since posing and related 25520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// techniques can modify the name -> class mapping. 25645d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbarllvm::Value *CGObjCGNU::GetClass(CGBuilderTy &Builder, 257ddb2a3d55a24a1dbdf9152621642d9a4b4fc2f61Daniel Dunbar const ObjCInterfaceDecl *OID) { 258d9d22dd9c94618490dbffb0e2caf222530ca39d3Chris Lattner llvm::Value *ClassName = CGM.GetAddrOfConstantCString(OID->getNameAsString()); 2592a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner EmitClassRef(OID->getNameAsString()); 260ddb2a3d55a24a1dbdf9152621642d9a4b4fc2f61Daniel Dunbar ClassName = Builder.CreateStructGEP(ClassName, 0); 261ddb2a3d55a24a1dbdf9152621642d9a4b4fc2f61Daniel Dunbar 26226c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian std::vector<const llvm::Type*> Params(1, PtrToInt8Ty); 26320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ClassLookupFn = 26496e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson CGM.CreateRuntimeFunction(llvm::FunctionType::get(IdTy, 26526c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian Params, 26626c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian true), 26726c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian "objc_lookup_class"); 26820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return Builder.CreateCall(ClassLookupFn, ClassName); 269391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner} 270391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner 27145d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbarllvm::Value *CGObjCGNU::GetSelector(CGBuilderTy &Builder, Selector Sel) { 272077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner llvm::GlobalAlias *&US = UntypedSelectors[Sel.getAsString()]; 2738e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner if (US == 0) 27496e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson US = new llvm::GlobalAlias(llvm::PointerType::getUnqual(SelectorTy), 2750f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall llvm::GlobalValue::PrivateLinkage, 2760f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall ".objc_untyped_selector_alias"+Sel.getAsString(), 2778e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner NULL, &TheModule); 2781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2798e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner return Builder.CreateLoad(US); 280df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian} 281df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian 282df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanianllvm::Value *CGObjCGNU::GetSelector(CGBuilderTy &Builder, const ObjCMethodDecl 283df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian *Method) { 284df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian 285df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian std::string SelName = Method->getSelector().getAsString(); 286df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian std::string SelTypes; 287df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian CGM.getContext().getObjCEncodingForMethodDecl(Method, SelTypes); 288df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian // Typed selectors 289df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian TypedSelector Selector = TypedSelector(SelName, 290df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian SelTypes); 291df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian 292df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian // If it's already cached, return it. 293bb1c8600218b3244340331165fc7cba7bf227655Mike Stump if (TypedSelectors[Selector]) { 294bb1c8600218b3244340331165fc7cba7bf227655Mike Stump return Builder.CreateLoad(TypedSelectors[Selector]); 295df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian } 296df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian 297df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian // If it isn't, cache it. 298df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian llvm::GlobalAlias *Sel = new llvm::GlobalAlias( 29996e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(SelectorTy), 3000f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall llvm::GlobalValue::PrivateLinkage, ".objc_selector_alias" + SelName, 301df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian NULL, &TheModule); 302df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian TypedSelectors[Selector] = Sel; 303df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian 304df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian return Builder.CreateLoad(Sel); 3058e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner} 3068e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner 3075e7dcc62e4637591959f9c372f6c5258d0d263e0Chris Lattnerllvm::Constant *CGObjCGNU::MakeConstantString(const std::string &Str, 3085e7dcc62e4637591959f9c372f6c5258d0d263e0Chris Lattner const std::string &Name) { 3098a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::Constant *ConstStr = CGM.GetAddrOfConstantCString(Str, Name.c_str()); 3103c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson return llvm::ConstantExpr::getGetElementPtr(ConstStr, Zeros, 2); 31120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 312d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanianllvm::Constant *CGObjCGNU::ExportUniqueString(const std::string &Str, 313d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian const std::string prefix) { 314d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::string name = prefix + Str; 315d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *ConstStr = TheModule.getGlobalVariable(name); 316d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if (!ConstStr) { 317d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *value = llvm::ConstantArray::get(VMContext, Str, true); 318d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ConstStr = new llvm::GlobalVariable(TheModule, value->getType(), true, 319d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::GlobalValue::LinkOnceODRLinkage, value, prefix + Str); 320d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 321d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian return llvm::ConstantExpr::getGetElementPtr(ConstStr, Zeros, 2); 322d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian} 323bb1c8600218b3244340331165fc7cba7bf227655Mike Stump 32420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::MakeGlobal(const llvm::StructType *Ty, 32520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> &V, const std::string &Name) { 32608e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson llvm::Constant *C = llvm::ConstantStruct::get(Ty, V); 3271c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson return new llvm::GlobalVariable(TheModule, Ty, false, 3281c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson llvm::GlobalValue::InternalLinkage, C, Name); 32920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 330bb1c8600218b3244340331165fc7cba7bf227655Mike Stump 33120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::MakeGlobal(const llvm::ArrayType *Ty, 33220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> &V, const std::string &Name) { 3337db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson llvm::Constant *C = llvm::ConstantArray::get(Ty, V); 3341c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson return new llvm::GlobalVariable(TheModule, Ty, false, 335bb1c8600218b3244340331165fc7cba7bf227655Mike Stump llvm::GlobalValue::InternalLinkage, C, Name); 33620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 33720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 33820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// Generate an NSConstantString object. 33920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov//TODO: In case there are any crazy people still using the GNU runtime without 34020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov//an OpenStep implementation, this should let them select their own class for 34120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov//constant strings. 34233fdb738a6c125f4c788733897021b7c1a062b0cSteve Naroffllvm::Constant *CGObjCGNU::GenerateConstantString(const ObjCStringLiteral *SL) { 3431eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump std::string Str(SL->getString()->getStrData(), 34433fdb738a6c125f4c788733897021b7c1a062b0cSteve Naroff SL->getString()->getByteLength()); 34520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Ivars; 34620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Ivars.push_back(NULLPtr); 34713fd7e5111032f54b538dd66d035b0ccc1f82467Chris Lattner Ivars.push_back(MakeConstantString(Str)); 3484a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Ivars.push_back(llvm::ConstantInt::get(IntTy, Str.size())); 34920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ObjCStr = MakeGlobal( 35047a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType::get(VMContext, PtrToInt8Ty, PtrToInt8Ty, IntTy, NULL), 35120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Ivars, ".objc_str"); 35220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ConstantStrings.push_back( 3533c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::ConstantExpr::getBitCast(ObjCStr, PtrToInt8Ty)); 35420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return ObjCStr; 35520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 35620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 35720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov///Generates a message send where the super is the receiver. This is a message 35820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov///send to self with special delivery semantics indicating which class's method 35920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov///should be called. 3608f2926b73ed635afecd020da787af6a837601a2bDaniel DunbarCodeGen::RValue 3618f2926b73ed635afecd020da787af6a837601a2bDaniel DunbarCGObjCGNU::GenerateMessageSendSuper(CodeGen::CodeGenFunction &CGF, 3627f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar QualType ResultType, 3637f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar Selector Sel, 364f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar const ObjCInterfaceDecl *Class, 3657ce77920a35060f1c8dd72e541e42ce296ccd168Fariborz Jahanian bool isCategoryImpl, 366f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar llvm::Value *Receiver, 36719cd87eb5fb3c197e631ce08fd52c446c4d4e8f1Daniel Dunbar bool IsClassMessage, 368d6c93d703541c992e06eb9a59a2d826a30da65b2Daniel Dunbar const CallArgList &CallArgs, 369d6c93d703541c992e06eb9a59a2d826a30da65b2Daniel Dunbar const ObjCMethodDecl *Method) { 370b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian llvm::Value *cmd = GetSelector(CGF.Builder, Sel); 371b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 372b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CallArgList ActualArgs; 373b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 374b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian ActualArgs.push_back( 3750f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall std::make_pair(RValue::get(CGF.Builder.CreateBitCast(Receiver, IdTy)), 3760f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall ASTIdTy)); 377b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian ActualArgs.push_back(std::make_pair(RValue::get(cmd), 378b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CGF.getContext().getObjCSelType())); 379b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian ActualArgs.insert(ActualArgs.end(), CallArgs.begin(), CallArgs.end()); 380b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 381b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CodeGenTypes &Types = CGM.getTypes(); 382b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian const CGFunctionInfo &FnInfo = Types.getFunctionInfo(ResultType, ActualArgs); 3836793966aa221764f579cc8436bd641e1ec339c6dDaniel Dunbar const llvm::FunctionType *impType = 3846793966aa221764f579cc8436bd641e1ec339c6dDaniel Dunbar Types.GetFunctionType(FnInfo, Method ? Method->isVariadic() : false); 385b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 3865efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar llvm::Value *ReceiverClass = 0; 38748e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (isCategoryImpl) { 38848e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner llvm::Constant *classLookupFunction = 0; 38948e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner std::vector<const llvm::Type*> Params; 39048e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner Params.push_back(PtrTy); 39148e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (IsClassMessage) { 39296e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson classLookupFunction = CGM.CreateRuntimeFunction(llvm::FunctionType::get( 39348e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner IdTy, Params, true), "objc_get_meta_class"); 39448e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner } else { 39596e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson classLookupFunction = CGM.CreateRuntimeFunction(llvm::FunctionType::get( 39648e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner IdTy, Params, true), "objc_get_class"); 3975efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } 39848e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner ReceiverClass = CGF.Builder.CreateCall(classLookupFunction, 39948e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner MakeConstantString(Class->getNameAsString())); 4005efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } else { 40148e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner // Set up global aliases for the metaclass or class pointer if they do not 40248e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner // already exist. These will are forward-references which will be set to 403bb1c8600218b3244340331165fc7cba7bf227655Mike Stump // pointers to the class and metaclass structure created for the runtime 404bb1c8600218b3244340331165fc7cba7bf227655Mike Stump // load function. To send a message to super, we look up the value of the 40548e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner // super_class pointer from either the class or metaclass structure. 40648e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (IsClassMessage) { 40748e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (!MetaClassPtrAlias) { 40848e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner MetaClassPtrAlias = new llvm::GlobalAlias(IdTy, 40948e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner llvm::GlobalValue::InternalLinkage, ".objc_metaclass_ref" + 41048e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner Class->getNameAsString(), NULL, &TheModule); 41148e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner } 41248e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner ReceiverClass = MetaClassPtrAlias; 41348e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner } else { 41448e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (!ClassPtrAlias) { 41548e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner ClassPtrAlias = new llvm::GlobalAlias(IdTy, 41648e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner llvm::GlobalValue::InternalLinkage, ".objc_class_ref" + 41748e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner Class->getNameAsString(), NULL, &TheModule); 41848e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner } 41948e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner ReceiverClass = ClassPtrAlias; 4205efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } 42171238f67c5df13eef19450d66b7a7ab28377192aChris Lattner } 4225efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar // Cast the pointer to a simplified version of the class structure 4231eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump ReceiverClass = CGF.Builder.CreateBitCast(ReceiverClass, 42496e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual( 42547a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType::get(VMContext, IdTy, IdTy, NULL))); 4265efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar // Get the superclass pointer 4275efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar ReceiverClass = CGF.Builder.CreateStructGEP(ReceiverClass, 1); 4285efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar // Load the superclass pointer 4295efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar ReceiverClass = CGF.Builder.CreateLoad(ReceiverClass); 43020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Construct the structure used to look up the IMP 43147a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType *ObjCSuperTy = llvm::StructType::get(VMContext, 43247a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson Receiver->getType(), IdTy, NULL); 4338f2926b73ed635afecd020da787af6a837601a2bDaniel Dunbar llvm::Value *ObjCSuper = CGF.Builder.CreateAlloca(ObjCSuperTy); 434b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 4358f2926b73ed635afecd020da787af6a837601a2bDaniel Dunbar CGF.Builder.CreateStore(Receiver, CGF.Builder.CreateStructGEP(ObjCSuper, 0)); 4365efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar CGF.Builder.CreateStore(ReceiverClass, 4375efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar CGF.Builder.CreateStructGEP(ObjCSuper, 1)); 43820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 43920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Get the IMP 44026c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian std::vector<const llvm::Type*> Params; 44196e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson Params.push_back(llvm::PointerType::getUnqual(ObjCSuperTy)); 44226c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian Params.push_back(SelectorTy); 4431eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Constant *lookupFunction = 44496e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson CGM.CreateRuntimeFunction(llvm::FunctionType::get( 44596e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(impType), Params, true), 44626c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian "objc_msg_lookup_super"); 44726c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian 44820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Value *lookupArgs[] = {ObjCSuper, cmd}; 4498f2926b73ed635afecd020da787af6a837601a2bDaniel Dunbar llvm::Value *imp = CGF.Builder.CreateCall(lookupFunction, lookupArgs, 45020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov lookupArgs+2); 45120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 452b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian return CGF.EmitCall(FnInfo, imp, ActualArgs); 45320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 45420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 4551eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// Generate code for a message send expression. 4568f2926b73ed635afecd020da787af6a837601a2bDaniel DunbarCodeGen::RValue 4578f2926b73ed635afecd020da787af6a837601a2bDaniel DunbarCGObjCGNU::GenerateMessageSend(CodeGen::CodeGenFunction &CGF, 4587f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar QualType ResultType, 4597f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar Selector Sel, 460f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar llvm::Value *Receiver, 46119cd87eb5fb3c197e631ce08fd52c446c4d4e8f1Daniel Dunbar bool IsClassMessage, 462df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian const CallArgList &CallArgs, 463df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian const ObjCMethodDecl *Method) { 464d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian CGBuilderTy &Builder = CGF.Builder; 4650f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall IdTy = cast<llvm::PointerType>(CGM.getTypes().ConvertType(ASTIdTy)); 466df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian llvm::Value *cmd; 467df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian if (Method) 468d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian cmd = GetSelector(Builder, Method); 469df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian else 470d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian cmd = GetSelector(Builder, Sel); 471b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CallArgList ActualArgs; 472b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 473d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Receiver = Builder.CreateBitCast(Receiver, IdTy); 474b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian ActualArgs.push_back( 475d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::make_pair(RValue::get(Receiver), ASTIdTy)); 476b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian ActualArgs.push_back(std::make_pair(RValue::get(cmd), 477b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CGF.getContext().getObjCSelType())); 478b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian ActualArgs.insert(ActualArgs.end(), CallArgs.begin(), CallArgs.end()); 479b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 480b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CodeGenTypes &Types = CGM.getTypes(); 481b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian const CGFunctionInfo &FnInfo = Types.getFunctionInfo(ResultType, ActualArgs); 4826793966aa221764f579cc8436bd641e1ec339c6dDaniel Dunbar const llvm::FunctionType *impType = 4836793966aa221764f579cc8436bd641e1ec339c6dDaniel Dunbar Types.GetFunctionType(FnInfo, Method ? Method->isVariadic() : false); 4840f984268b05edab2cc555a427c441baa9c252658Chris Lattner 48534e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian llvm::Value *imp; 48634e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian // For sender-aware dispatch, we pass the sender as the third argument to a 48734e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian // lookup function. When sending messages from C code, the sender is nil. 488d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // objc_msg_lookup_sender(id *receiver, SEL selector, id sender); 489d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if (CGM.getContext().getLangOptions().ObjCNonFragileABI) { 490d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 491d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<const llvm::Type*> Params; 492d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Value *ReceiverPtr = CGF.CreateTempAlloca(Receiver->getType()); 493d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Builder.CreateStore(Receiver, ReceiverPtr); 494d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Params.push_back(ReceiverPtr->getType()); 495d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Params.push_back(SelectorTy); 49634e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian llvm::Value *self; 49734e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian 49834e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian if (isa<ObjCMethodDecl>(CGF.CurFuncDecl)) { 49934e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian self = CGF.LoadObjCSelf(); 50034e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian } else { 50103e205031b08669f05c41eed5b896fc94c4a12bbOwen Anderson self = llvm::ConstantPointerNull::get(IdTy); 50234e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian } 503d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 50434e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian Params.push_back(self->getType()); 505d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 506d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // The lookup function returns a slot, which can be safely cached. 507d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Type *SlotTy = llvm::StructType::get(VMContext, PtrTy, PtrTy, PtrTy, 508d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian IntTy, llvm::PointerType::getUnqual(impType), NULL); 5091eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Constant *lookupFunction = 51096e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson CGM.CreateRuntimeFunction(llvm::FunctionType::get( 511d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::PointerType::getUnqual(SlotTy), Params, true), 51234e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian "objc_msg_lookup_sender"); 51326c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian 514d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // The lookup function is guaranteed not to capture the receiver pointer. 515d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if (llvm::Function *LookupFn = dyn_cast<llvm::Function>(lookupFunction)) { 516d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian LookupFn->setDoesNotCapture(1); 517d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 518d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 519d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Value *slot = 520d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Builder.CreateCall3(lookupFunction, ReceiverPtr, cmd, self); 521d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian imp = Builder.CreateLoad(Builder.CreateStructGEP(slot, 4)); 522d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // The lookup function may have changed the receiver, so make sure we use 523d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // the new one. 524d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ActualArgs[0] = 525d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::make_pair(RValue::get(Builder.CreateLoad(ReceiverPtr)), ASTIdTy); 52634e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian } else { 527d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<const llvm::Type*> Params; 528d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Params.push_back(Receiver->getType()); 529d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Params.push_back(SelectorTy); 5301eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Constant *lookupFunction = 53196e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson CGM.CreateRuntimeFunction(llvm::FunctionType::get( 53296e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(impType), Params, true), 53334e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian "objc_msg_lookup"); 53434e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian 535d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian imp = Builder.CreateCall2(lookupFunction, Receiver, cmd); 53634e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian } 5373eae03e7d165f20a863a9a4d7122ba2a691ab16dChris Lattner 538b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian return CGF.EmitCall(FnInfo, imp, ActualArgs); 53920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 54020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 5411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// Generates a MethodList. Used in construction of a objc_class and 54220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// objc_category structures. 54320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::GenerateMethodList(const std::string &ClassName, 5441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const std::string &CategoryName, 5451eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const llvm::SmallVectorImpl<Selector> &MethodSels, 5461eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const llvm::SmallVectorImpl<llvm::Constant *> &MethodTypes, 54720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov bool isClassMethodList) { 5480f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall if (MethodSels.empty()) 5490f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall return NULLPtr; 5501eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Get the method structure type. 55147a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType *ObjCMethodTy = llvm::StructType::get(VMContext, 55220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // Really a selector, but the runtime creates it us. 55320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // Method types 55496e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(IMPTy), //Method pointer 55520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 55620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Methods; 55720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 55820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (unsigned int i = 0, e = MethodTypes.size(); i < e; ++i) { 55920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 5601e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian if (llvm::Constant *Method = 56120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov TheModule.getFunction(SymbolNameForMethod(ClassName, CategoryName, 562077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner MethodSels[i].getAsString(), 5631e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian isClassMethodList))) { 5648a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::Constant *C = MakeConstantString(MethodSels[i].getAsString()); 5658a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall Elements.push_back(C); 5668a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall Elements.push_back(MethodTypes[i]); 5673c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Method = llvm::ConstantExpr::getBitCast(Method, 56896e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(IMPTy)); 5691e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian Elements.push_back(Method); 57008e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson Methods.push_back(llvm::ConstantStruct::get(ObjCMethodTy, Elements)); 5711e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian } 57220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 57320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 57420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Array of method structures 57596e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *ObjCMethodArrayTy = llvm::ArrayType::get(ObjCMethodTy, 5761e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian Methods.size()); 5777db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson llvm::Constant *MethodArray = llvm::ConstantArray::get(ObjCMethodArrayTy, 578fba676396703e87a5034e5f308aa30a633468f66Chris Lattner Methods); 57920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 58020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Structure containing list pointer, array and array count 58120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::SmallVector<const llvm::Type*, 16> ObjCMethodListFields; 5828c8f69ec1477424e11faef6b235505584d61e522Owen Anderson llvm::PATypeHolder OpaqueNextTy = llvm::OpaqueType::get(VMContext); 58396e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::Type *NextPtrTy = llvm::PointerType::getUnqual(OpaqueNextTy); 58447a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType *ObjCMethodListTy = llvm::StructType::get(VMContext, 5851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump NextPtrTy, 5861eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump IntTy, 58720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ObjCMethodArrayTy, 58820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 58920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Refine next pointer type to concrete type 59020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::cast<llvm::OpaqueType>( 59120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov OpaqueNextTy.get())->refineAbstractTypeTo(ObjCMethodListTy); 59220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ObjCMethodListTy = llvm::cast<llvm::StructType>(OpaqueNextTy.get()); 59320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 59420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.clear(); 59503e205031b08669f05c41eed5b896fc94c4a12bbOwen Anderson Methods.push_back(llvm::ConstantPointerNull::get( 59696e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(ObjCMethodListTy))); 5970032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson Methods.push_back(llvm::ConstantInt::get(llvm::Type::getInt32Ty(VMContext), 59820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov MethodTypes.size())); 59920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.push_back(MethodArray); 6001eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 60120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an instance of the structure 60220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ObjCMethodListTy, Methods, ".objc_method_list"); 60320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 60420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 60520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// Generates an IvarList. Used in construction of a objc_class. 60620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::GenerateIvarList( 60720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarNames, 60820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarTypes, 60920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarOffsets) { 6101eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Get the method structure type. 61147a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType *ObjCIvarTy = llvm::StructType::get(VMContext, 61220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 61320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 61420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IntTy, 61520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 61620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Ivars; 61720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 61820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (unsigned int i = 0, e = IvarNames.size() ; i < e ; i++) { 61920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 6208a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall Elements.push_back(IvarNames[i]); 6218a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall Elements.push_back(IvarTypes[i]); 62220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(IvarOffsets[i]); 62308e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson Ivars.push_back(llvm::ConstantStruct::get(ObjCIvarTy, Elements)); 62420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 62520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 62620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Array of method structures 62796e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *ObjCIvarArrayTy = llvm::ArrayType::get(ObjCIvarTy, 62820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IvarNames.size()); 62920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 6301eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 63120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 6324a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Elements.push_back(llvm::ConstantInt::get(IntTy, (int)IvarNames.size())); 6337db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson Elements.push_back(llvm::ConstantArray::get(ObjCIvarArrayTy, Ivars)); 63420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Structure containing array and array count 63547a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType *ObjCIvarListTy = llvm::StructType::get(VMContext, IntTy, 63620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ObjCIvarArrayTy, 63720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 63820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 63920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an instance of the structure 64020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ObjCIvarListTy, Elements, ".objc_ivar_list"); 6410f984268b05edab2cc555a427c441baa9c252658Chris Lattner} 6420f984268b05edab2cc555a427c441baa9c252658Chris Lattner 64320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// Generate a class structure 64420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::GenerateClassStructure( 64520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MetaClass, 64620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SuperClass, 64720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov unsigned info, 648d002cc6fc5b72bf00e3b7b4571ccf0f23c789b4bChris Lattner const char *Name, 64920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Version, 65020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *InstanceSize, 65120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *IVars, 65220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Methods, 653d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *Protocols, 654d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *IvarOffsets, 655d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *Properties) { 65620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Set up the class structure 65720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Note: Several of these are char*s when they should be ids. This is 65820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // because the runtime performs this translation on load. 659d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // 660d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Fields marked New ABI are part of the GNUstep runtime. We emit them 661d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // anyway; the classes will still work with the GNU runtime, they will just 662d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // be ignored. 66347a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType *ClassTy = llvm::StructType::get(VMContext, 66420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // class_pointer 66520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // super_class 66620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // name 66720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov LongTy, // version 66820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov LongTy, // info 66920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov LongTy, // instance_size 67020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IVars->getType(), // ivars 67120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods->getType(), // methods 6721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // These are all filled in by the runtime, so we pretend 67320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // dtable 67420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // subclass_list 67520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // sibling_class 67620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // protocols 67720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // gc_object_type 678d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // New ABI: 679d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian LongTy, // abi_version 680d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian IvarOffsets->getType(), // ivar_offsets 681d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Properties->getType(), // properties 68220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 6834a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson llvm::Constant *Zero = llvm::ConstantInt::get(LongTy, 0); 68420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Fill in the structure 68520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 6863c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getBitCast(MetaClass, PtrToInt8Ty)); 68720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(SuperClass); 688d002cc6fc5b72bf00e3b7b4571ccf0f23c789b4bChris Lattner Elements.push_back(MakeConstantString(Name, ".class_name")); 68920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(Zero); 6904a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Elements.push_back(llvm::ConstantInt::get(LongTy, info)); 69120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(InstanceSize); 69220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(IVars); 69320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(Methods); 694d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(NULLPtr); 695d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(NULLPtr); 696d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(NULLPtr); 6973c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getBitCast(Protocols, PtrTy)); 698d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(NULLPtr); 699d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(Zero); 700d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(IvarOffsets); 701d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(Properties); 70220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an instance of the structure 7031565e0364b05d163640dd2b6feed43bae67df4fdChris Lattner return MakeGlobal(ClassTy, Elements, SymbolNameForClass(Name)); 70420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 70520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 70620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::GenerateProtocolMethodList( 70720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &MethodNames, 70820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &MethodTypes) { 7091eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Get the method structure type. 71047a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType *ObjCMethodDescTy = llvm::StructType::get(VMContext, 71120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // Really a selector, but the runtime does the casting for us. 71220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 71320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 71420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Methods; 71520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 71620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (unsigned int i = 0, e = MethodTypes.size() ; i < e ; i++) { 71720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 7181eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Elements.push_back(MethodNames[i]); 7198a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall Elements.push_back(MethodTypes[i]); 72008e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson Methods.push_back(llvm::ConstantStruct::get(ObjCMethodDescTy, Elements)); 72120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 72296e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *ObjCMethodArrayTy = llvm::ArrayType::get(ObjCMethodDescTy, 72320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov MethodNames.size()); 7247db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson llvm::Constant *Array = llvm::ConstantArray::get(ObjCMethodArrayTy, 725bb1c8600218b3244340331165fc7cba7bf227655Mike Stump Methods); 72647a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType *ObjCMethodDescListTy = llvm::StructType::get(VMContext, 72720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IntTy, ObjCMethodArrayTy, NULL); 72820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.clear(); 7294a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Methods.push_back(llvm::ConstantInt::get(IntTy, MethodNames.size())); 73020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.push_back(Array); 73120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ObjCMethodDescListTy, Methods, ".objc_method_list"); 73220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 733bb1c8600218b3244340331165fc7cba7bf227655Mike Stump 73420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// Create the protocol list structure used in classes, categories and so on 73520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::GenerateProtocolList( 73620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<std::string> &Protocols) { 73796e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *ProtocolArrayTy = llvm::ArrayType::get(PtrToInt8Ty, 73820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Protocols.size()); 73947a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType *ProtocolListTy = llvm::StructType::get(VMContext, 74020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, //Should be a recurisve pointer, but it's always NULL here. 74120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov LongTy,//FIXME: Should be size_t 74220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ProtocolArrayTy, 74320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 7441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump std::vector<llvm::Constant*> Elements; 74520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (const std::string *iter = Protocols.begin(), *endIter = Protocols.end(); 74620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter != endIter ; iter++) { 747f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::Constant *protocol = ExistingProtocols[*iter]; 748f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian if (!protocol) 749f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian protocol = GenerateEmptyProtocol(*iter); 7503c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::Constant *Ptr = llvm::ConstantExpr::getBitCast(protocol, 751a1cf15f4680e5cf39e72e28c5ea854fcba792e84Owen Anderson PtrToInt8Ty); 75220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(Ptr); 75320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 7547db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson llvm::Constant * ProtocolArray = llvm::ConstantArray::get(ProtocolArrayTy, 75520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements); 75620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 75720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 7584a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Elements.push_back(llvm::ConstantInt::get(LongTy, Protocols.size())); 75920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ProtocolArray); 76020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ProtocolListTy, Elements, ".objc_protocol_list"); 76120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 76220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 7631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumpllvm::Value *CGObjCGNU::GenerateProtocolRef(CGBuilderTy &Builder, 764af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar const ObjCProtocolDecl *PD) { 765f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::Value *protocol = ExistingProtocols[PD->getNameAsString()]; 7661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const llvm::Type *T = 767f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian CGM.getTypes().ConvertType(CGM.getContext().getObjCProtoType()); 76896e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson return Builder.CreateBitCast(protocol, llvm::PointerType::getUnqual(T)); 769f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian} 770f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian 771f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanianllvm::Constant *CGObjCGNU::GenerateEmptyProtocol( 772f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian const std::string &ProtocolName) { 773f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::SmallVector<std::string, 0> EmptyStringVector; 774f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::SmallVector<llvm::Constant*, 0> EmptyConstantVector; 775f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian 776f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::Constant *ProtocolList = GenerateProtocolList(EmptyStringVector); 777d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *MethodList = 778f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian GenerateProtocolMethodList(EmptyConstantVector, EmptyConstantVector); 779f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian // Protocols are objects containing lists of the methods implemented and 780f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian // protocols adopted. 78147a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType *ProtocolTy = llvm::StructType::get(VMContext, IdTy, 782f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian PtrToInt8Ty, 783f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian ProtocolList->getType(), 784d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MethodList->getType(), 785d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MethodList->getType(), 786d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MethodList->getType(), 787d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MethodList->getType(), 788f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian NULL); 7891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump std::vector<llvm::Constant*> Elements; 790f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian // The isa pointer must be set to a magic number so the runtime knows it's 791f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian // the correct layout. 792d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian int Version = CGM.getContext().getLangOptions().ObjCNonFragileABI ? 793d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian NonFragileProtocolVersion : ProtocolVersion; 7943c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getIntToPtr( 795d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ConstantInt::get(llvm::Type::getInt32Ty(VMContext), Version), IdTy)); 796f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian Elements.push_back(MakeConstantString(ProtocolName, ".objc_protocol_name")); 797f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian Elements.push_back(ProtocolList); 798d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(MethodList); 799d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(MethodList); 800d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(MethodList); 801d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(MethodList); 802f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian return MakeGlobal(ProtocolTy, Elements, ".objc_protocol"); 80320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 80420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 805af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbarvoid CGObjCGNU::GenerateProtocol(const ObjCProtocolDecl *PD) { 806af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar ASTContext &Context = CGM.getContext(); 8078ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string ProtocolName = PD->getNameAsString(); 808af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar llvm::SmallVector<std::string, 16> Protocols; 809af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar for (ObjCProtocolDecl::protocol_iterator PI = PD->protocol_begin(), 810af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar E = PD->protocol_end(); PI != E; ++PI) 811d9d22dd9c94618490dbffb0e2caf222530ca39d3Chris Lattner Protocols.push_back((*PI)->getNameAsString()); 812af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> InstanceMethodNames; 813af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> InstanceMethodTypes; 814d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::SmallVector<llvm::Constant*, 16> OptionalInstanceMethodNames; 815d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::SmallVector<llvm::Constant*, 16> OptionalInstanceMethodTypes; 81617945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis for (ObjCProtocolDecl::instmeth_iterator iter = PD->instmeth_begin(), 81717945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis E = PD->instmeth_end(); iter != E; iter++) { 818af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar std::string TypeStr; 819af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar Context.getObjCEncodingForMethodDecl(*iter, TypeStr); 820d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if ((*iter)->getImplementationControl() == ObjCMethodDecl::Optional) { 821d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian InstanceMethodNames.push_back( 822d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MakeConstantString((*iter)->getSelector().getAsString())); 823d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian InstanceMethodTypes.push_back(MakeConstantString(TypeStr)); 824d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 825d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalInstanceMethodNames.push_back( 826d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MakeConstantString((*iter)->getSelector().getAsString())); 827d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalInstanceMethodTypes.push_back(MakeConstantString(TypeStr)); 828d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 829af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar } 830af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar // Collect information about class methods: 831af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> ClassMethodNames; 832af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> ClassMethodTypes; 833d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::SmallVector<llvm::Constant*, 16> OptionalClassMethodNames; 834d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::SmallVector<llvm::Constant*, 16> OptionalClassMethodTypes; 8351eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump for (ObjCProtocolDecl::classmeth_iterator 83617945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = PD->classmeth_begin(), endIter = PD->classmeth_end(); 83717945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter != endIter ; iter++) { 838af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar std::string TypeStr; 839af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar Context.getObjCEncodingForMethodDecl((*iter),TypeStr); 840d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if ((*iter)->getImplementationControl() == ObjCMethodDecl::Optional) { 841d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ClassMethodNames.push_back( 842d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MakeConstantString((*iter)->getSelector().getAsString())); 843d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ClassMethodTypes.push_back(MakeConstantString(TypeStr)); 844d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 845d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalClassMethodNames.push_back( 846d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MakeConstantString((*iter)->getSelector().getAsString())); 847d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalClassMethodTypes.push_back(MakeConstantString(TypeStr)); 848d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 849af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar } 85020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 85120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ProtocolList = GenerateProtocolList(Protocols); 85220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *InstanceMethodList = 85320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov GenerateProtocolMethodList(InstanceMethodNames, InstanceMethodTypes); 85420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ClassMethodList = 85520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov GenerateProtocolMethodList(ClassMethodNames, ClassMethodTypes); 856d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *OptionalInstanceMethodList = 857d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian GenerateProtocolMethodList(OptionalInstanceMethodNames, 858d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalInstanceMethodTypes); 859d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *OptionalClassMethodList = 860d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian GenerateProtocolMethodList(OptionalClassMethodNames, 861d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalClassMethodTypes); 862d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 863d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Property metadata: name, attributes, isSynthesized, setter name, setter 864d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // types, getter name, getter types. 865d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // The isSynthesized value is always set to 0 in a protocol. It exists to 866d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // simplify the runtime library by allowing it to use the same data 867d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // structures for protocol metadata everywhere. 868d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::StructType *PropertyMetadataTy = llvm::StructType::get(VMContext, 869d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrToInt8Ty, Int8Ty, Int8Ty, PtrToInt8Ty, PtrToInt8Ty, PtrToInt8Ty, 870d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrToInt8Ty, NULL); 871d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> Properties; 872d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> OptionalProperties; 873d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 874d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Add all of the property methods need adding to the method list and to the 875d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // property metadata list. 876d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian for (ObjCContainerDecl::prop_iterator 877d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian iter = PD->prop_begin(), endIter = PD->prop_end(); 878d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian iter != endIter ; iter++) { 879d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> Fields; 880d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ObjCPropertyDecl *property = (*iter); 881d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 882d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(MakeConstantString(property->getNameAsString())); 883d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(llvm::ConstantInt::get(Int8Ty, 884d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian property->getPropertyAttributes())); 885d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(llvm::ConstantInt::get(Int8Ty, 0)); 886d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if (ObjCMethodDecl *getter = property->getGetterMethodDecl()) { 887d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::string TypeStr; 888d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Context.getObjCEncodingForMethodDecl(getter,TypeStr); 889d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *TypeEncoding = MakeConstantString(TypeStr); 890d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian InstanceMethodTypes.push_back(TypeEncoding); 891d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(MakeConstantString(getter->getSelector().getAsString())); 892d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(TypeEncoding); 893d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 894d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 895d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 896d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 897d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if (ObjCMethodDecl *setter = property->getSetterMethodDecl()) { 898d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::string TypeStr; 899d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Context.getObjCEncodingForMethodDecl(setter,TypeStr); 900d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *TypeEncoding = MakeConstantString(TypeStr); 901d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian InstanceMethodTypes.push_back(TypeEncoding); 902d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(MakeConstantString(setter->getSelector().getAsString())); 903d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(TypeEncoding); 904d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 905d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 906d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 907d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 908d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if (property->getPropertyImplementation() == ObjCPropertyDecl::Optional) { 909d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalProperties.push_back(llvm::ConstantStruct::get(PropertyMetadataTy, Fields)); 910d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 911d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Properties.push_back(llvm::ConstantStruct::get(PropertyMetadataTy, Fields)); 912d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 913d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 914d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *PropertyArray = llvm::ConstantArray::get( 915d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ArrayType::get(PropertyMetadataTy, Properties.size()), Properties); 916d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant* PropertyListInitFields[] = 917d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian {llvm::ConstantInt::get(IntTy, Properties.size()), NULLPtr, PropertyArray}; 918d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 919d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *PropertyListInit = 9200d36dd28bb40b08a93d7f64196794882eee08ee8Nick Lewycky llvm::ConstantStruct::get(VMContext, PropertyListInitFields, 3, false); 921d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *PropertyList = new llvm::GlobalVariable(TheModule, 922d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PropertyListInit->getType(), false, llvm::GlobalValue::InternalLinkage, 923d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PropertyListInit, ".objc_property_list"); 924d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 925d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *OptionalPropertyArray = 926d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ConstantArray::get(llvm::ArrayType::get(PropertyMetadataTy, 927d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalProperties.size()) , OptionalProperties); 928d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant* OptionalPropertyListInitFields[] = { 929d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ConstantInt::get(IntTy, OptionalProperties.size()), NULLPtr, 930d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalPropertyArray }; 931d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 932d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *OptionalPropertyListInit = 9330d36dd28bb40b08a93d7f64196794882eee08ee8Nick Lewycky llvm::ConstantStruct::get(VMContext, OptionalPropertyListInitFields, 3, false); 934d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *OptionalPropertyList = new llvm::GlobalVariable(TheModule, 935d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalPropertyListInit->getType(), false, 936d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::GlobalValue::InternalLinkage, OptionalPropertyListInit, 937d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ".objc_property_list"); 938d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 93920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Protocols are objects containing lists of the methods implemented and 94020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // protocols adopted. 94147a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType *ProtocolTy = llvm::StructType::get(VMContext, IdTy, 94220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 94320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ProtocolList->getType(), 94420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov InstanceMethodList->getType(), 94520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ClassMethodList->getType(), 946d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalInstanceMethodList->getType(), 947d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalClassMethodList->getType(), 948d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PropertyList->getType(), 949d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalPropertyList->getType(), 95020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 9511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump std::vector<llvm::Constant*> Elements; 95220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // The isa pointer must be set to a magic number so the runtime knows it's 95320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // the correct layout. 954d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian int Version = CGM.getContext().getLangOptions().ObjCNonFragileABI ? 955d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian NonFragileProtocolVersion : ProtocolVersion; 9563c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getIntToPtr( 957d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ConstantInt::get(llvm::Type::getInt32Ty(VMContext), Version), IdTy)); 95820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(MakeConstantString(ProtocolName, ".objc_protocol_name")); 95920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ProtocolList); 96020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(InstanceMethodList); 96120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ClassMethodList); 962d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(OptionalInstanceMethodList); 963d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(OptionalClassMethodList); 964d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(PropertyList); 965d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(OptionalPropertyList); 9661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump ExistingProtocols[ProtocolName] = 9673c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::ConstantExpr::getBitCast(MakeGlobal(ProtocolTy, Elements, 96820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ".objc_protocol"), IdTy); 96920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 970d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanianvoid CGObjCGNU::GenerateProtocolHolderCategory(void) { 971d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Collect information about instance methods 972d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::SmallVector<Selector, 1> MethodSels; 973d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::SmallVector<llvm::Constant*, 1> MethodTypes; 974d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 975d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> Elements; 976d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian const std::string ClassName = "__ObjC_Protocol_Holder_Ugly_Hack"; 977d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian const std::string CategoryName = "AnotherHack"; 978d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(MakeConstantString(CategoryName)); 979d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(MakeConstantString(ClassName)); 980d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Instance method list 981d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(llvm::ConstantExpr::getBitCast(GenerateMethodList( 982d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ClassName, CategoryName, MethodSels, MethodTypes, false), PtrTy)); 983d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Class method list 984d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(llvm::ConstantExpr::getBitCast(GenerateMethodList( 985d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ClassName, CategoryName, MethodSels, MethodTypes, true), PtrTy)); 986d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Protocol list 987d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ArrayType *ProtocolArrayTy = llvm::ArrayType::get(PtrTy, 988d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ExistingProtocols.size()); 989d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::StructType *ProtocolListTy = llvm::StructType::get(VMContext, 990d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrTy, //Should be a recurisve pointer, but it's always NULL here. 991d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian LongTy,//FIXME: Should be size_t 992d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolArrayTy, 993d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian NULL); 994d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> ProtocolElements; 995d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian for (llvm::StringMapIterator<llvm::Constant*> iter = 996d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ExistingProtocols.begin(), endIter = ExistingProtocols.end(); 997d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian iter != endIter ; iter++) { 998d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *Ptr = llvm::ConstantExpr::getBitCast(iter->getValue(), 999d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrTy); 1000d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements.push_back(Ptr); 1001d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1002d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant * ProtocolArray = llvm::ConstantArray::get(ProtocolArrayTy, 1003d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements); 1004d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements.clear(); 1005d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements.push_back(NULLPtr); 1006d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements.push_back(llvm::ConstantInt::get(LongTy, 1007d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ExistingProtocols.size())); 1008d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements.push_back(ProtocolArray); 1009d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(llvm::ConstantExpr::getBitCast(MakeGlobal(ProtocolListTy, 1010d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements, ".objc_protocol_list"), PtrTy)); 1011d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Categories.push_back(llvm::ConstantExpr::getBitCast( 1012d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MakeGlobal(llvm::StructType::get(VMContext, PtrToInt8Ty, PtrToInt8Ty, 1013d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrTy, PtrTy, PtrTy, NULL), Elements), PtrTy)); 1014d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian} 101520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 10167ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbarvoid CGObjCGNU::GenerateCategory(const ObjCCategoryImplDecl *OCD) { 10178ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string ClassName = OCD->getClassInterface()->getNameAsString(); 10188ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string CategoryName = OCD->getNameAsString(); 10197ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about instance methods 10207ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<Selector, 16> InstanceMethodSels; 10217ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> InstanceMethodTypes; 1022653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor for (ObjCCategoryImplDecl::instmeth_iterator 102317945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = OCD->instmeth_begin(), endIter = OCD->instmeth_end(); 1024653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter != endIter ; iter++) { 10257ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar InstanceMethodSels.push_back((*iter)->getSelector()); 10267ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 10277ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar CGM.getContext().getObjCEncodingForMethodDecl(*iter,TypeStr); 10288a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall InstanceMethodTypes.push_back(MakeConstantString(TypeStr)); 10297ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 10307ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 10317ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about class methods 10327ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<Selector, 16> ClassMethodSels; 10337ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> ClassMethodTypes; 10341eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump for (ObjCCategoryImplDecl::classmeth_iterator 103517945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = OCD->classmeth_begin(), endIter = OCD->classmeth_end(); 1036653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter != endIter ; iter++) { 10377ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar ClassMethodSels.push_back((*iter)->getSelector()); 10387ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 10397ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar CGM.getContext().getObjCEncodingForMethodDecl(*iter,TypeStr); 10408a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall ClassMethodTypes.push_back(MakeConstantString(TypeStr)); 10417ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 10427ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 10437ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect the names of referenced protocols 10447ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<std::string, 16> Protocols; 10457ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar const ObjCInterfaceDecl *ClassDecl = OCD->getClassInterface(); 10467ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar const ObjCList<ObjCProtocolDecl> &Protos =ClassDecl->getReferencedProtocols(); 10477ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar for (ObjCList<ObjCProtocolDecl>::iterator I = Protos.begin(), 10487ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar E = Protos.end(); I != E; ++I) 1049d9d22dd9c94618490dbffb0e2caf222530ca39d3Chris Lattner Protocols.push_back((*I)->getNameAsString()); 10507ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 105120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 105220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(MakeConstantString(CategoryName)); 105320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(MakeConstantString(ClassName)); 10541eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Instance method list 10553c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getBitCast(GenerateMethodList( 1056a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner ClassName, CategoryName, InstanceMethodSels, InstanceMethodTypes, 105720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov false), PtrTy)); 105820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Class method list 10593c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getBitCast(GenerateMethodList( 1060a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner ClassName, CategoryName, ClassMethodSels, ClassMethodTypes, true), 106120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy)); 106220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Protocol list 10633c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getBitCast( 106420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov GenerateProtocolList(Protocols), PtrTy)); 10653c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Categories.push_back(llvm::ConstantExpr::getBitCast( 10661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump MakeGlobal(llvm::StructType::get(VMContext, PtrToInt8Ty, PtrToInt8Ty, 106747a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson PtrTy, PtrTy, PtrTy, NULL), Elements), PtrTy)); 106820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 10697ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 1070d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanianllvm::Constant *CGObjCGNU::GeneratePropertyList(const ObjCImplementationDecl *OID, 1071d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::SmallVectorImpl<Selector> &InstanceMethodSels, 1072d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::SmallVectorImpl<llvm::Constant*> &InstanceMethodTypes) { 1073d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ASTContext &Context = CGM.getContext(); 1074d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // 1075d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Property metadata: name, attributes, isSynthesized, setter name, setter 1076d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // types, getter name, getter types. 1077d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::StructType *PropertyMetadataTy = llvm::StructType::get(VMContext, 1078d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrToInt8Ty, Int8Ty, Int8Ty, PtrToInt8Ty, PtrToInt8Ty, PtrToInt8Ty, 1079d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrToInt8Ty, NULL); 1080d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> Properties; 1081d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1082d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1083d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Add all of the property methods need adding to the method list and to the 1084d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // property metadata list. 1085d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian for (ObjCImplDecl::propimpl_iterator 1086d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian iter = OID->propimpl_begin(), endIter = OID->propimpl_end(); 1087d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian iter != endIter ; iter++) { 1088d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> Fields; 1089d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ObjCPropertyDecl *property = (*iter)->getPropertyDecl(); 1090d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1091d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(MakeConstantString(property->getNameAsString())); 1092d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(llvm::ConstantInt::get(Int8Ty, 1093d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian property->getPropertyAttributes())); 1094d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(llvm::ConstantInt::get(Int8Ty, 1095d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian (*iter)->getPropertyImplementation() == 1096d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ObjCPropertyImplDecl::Synthesize)); 1097d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if (ObjCMethodDecl *getter = property->getGetterMethodDecl()) { 1098d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian InstanceMethodSels.push_back(getter->getSelector()); 1099d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::string TypeStr; 1100d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Context.getObjCEncodingForMethodDecl(getter,TypeStr); 1101d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *TypeEncoding = MakeConstantString(TypeStr); 1102d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian InstanceMethodTypes.push_back(TypeEncoding); 1103d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(MakeConstantString(getter->getSelector().getAsString())); 1104d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(TypeEncoding); 1105d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 1106d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1107d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1108d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1109d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if (ObjCMethodDecl *setter = property->getSetterMethodDecl()) { 1110d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian InstanceMethodSels.push_back(setter->getSelector()); 1111d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::string TypeStr; 1112d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Context.getObjCEncodingForMethodDecl(setter,TypeStr); 1113d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *TypeEncoding = MakeConstantString(TypeStr); 1114d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian InstanceMethodTypes.push_back(TypeEncoding); 1115d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(MakeConstantString(setter->getSelector().getAsString())); 1116d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(TypeEncoding); 1117d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 1118d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1119d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1120d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1121d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Properties.push_back(llvm::ConstantStruct::get(PropertyMetadataTy, Fields)); 1122d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1123d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ArrayType *PropertyArrayTy = 1124d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ArrayType::get(PropertyMetadataTy, Properties.size()); 1125d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *PropertyArray = llvm::ConstantArray::get(PropertyArrayTy, 1126d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Properties); 1127d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant* PropertyListInitFields[] = 1128d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian {llvm::ConstantInt::get(IntTy, Properties.size()), NULLPtr, PropertyArray}; 1129d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1130d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *PropertyListInit = 11310d36dd28bb40b08a93d7f64196794882eee08ee8Nick Lewycky llvm::ConstantStruct::get(VMContext, PropertyListInitFields, 3, false); 1132d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian return new llvm::GlobalVariable(TheModule, PropertyListInit->getType(), false, 1133d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::GlobalValue::InternalLinkage, PropertyListInit, 1134d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ".objc_property_list"); 1135d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian} 1136d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 11377ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbarvoid CGObjCGNU::GenerateClass(const ObjCImplementationDecl *OID) { 11387ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar ASTContext &Context = CGM.getContext(); 11397ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 11407ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Get the superclass name. 11411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const ObjCInterfaceDecl * SuperClassDecl = 11427ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar OID->getClassInterface()->getSuperClass(); 11438ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string SuperClassName; 11442a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner if (SuperClassDecl) { 11458ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner SuperClassName = SuperClassDecl->getNameAsString(); 11462a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner EmitClassRef(SuperClassName); 11472a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner } 11487ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 11497ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Get the class name 115009dc6660487fc2f4a4bb2032e30123d3e0da7230Chris Lattner ObjCInterfaceDecl *ClassDecl = 115109dc6660487fc2f4a4bb2032e30123d3e0da7230Chris Lattner const_cast<ObjCInterfaceDecl *>(OID->getClassInterface()); 11528ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string ClassName = ClassDecl->getNameAsString(); 11532a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner // Emit the symbol that is used to generate linker errors if this class is 11542a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner // referenced in other modules but not declared. 1155c51db23f58bd887b16cf91554aa86c430a2496e7Fariborz Jahanian std::string classSymbolName = "__objc_class_name_" + ClassName; 11561eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (llvm::GlobalVariable *symbol = 1157c51db23f58bd887b16cf91554aa86c430a2496e7Fariborz Jahanian TheModule.getGlobalVariable(classSymbolName)) { 11584a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson symbol->setInitializer(llvm::ConstantInt::get(LongTy, 0)); 1159c51db23f58bd887b16cf91554aa86c430a2496e7Fariborz Jahanian } else { 11601c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson new llvm::GlobalVariable(TheModule, LongTy, false, 11614a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson llvm::GlobalValue::ExternalLinkage, llvm::ConstantInt::get(LongTy, 0), 11621c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson classSymbolName); 1163c51db23f58bd887b16cf91554aa86c430a2496e7Fariborz Jahanian } 11641eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 11652bebbf0acee55404de4b8846713b64429e744e8fDaniel Dunbar // Get the size of instances. 11662bebbf0acee55404de4b8846713b64429e744e8fDaniel Dunbar int instanceSize = Context.getASTObjCImplementationLayout(OID).getSize() / 8; 11677ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 11687ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about instance variables. 11697ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> IvarNames; 11707ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> IvarTypes; 11717ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> IvarOffsets; 11721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1173d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> IvarOffsetValues; 1174d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 11751eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump int superInstanceSize = !SuperClassDecl ? 0 : 11769cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian Context.getASTObjCInterfaceLayout(SuperClassDecl).getSize() / 8; 11779cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // For non-fragile ivars, set the instance size to 0 - {the size of just this 11789cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // class}. The runtime will then set this to the correct value on load. 11799cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian if (CGM.getContext().getLangOptions().ObjCNonFragileABI) { 11809cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian instanceSize = 0 - (instanceSize - superInstanceSize); 11819cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 11827ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar for (ObjCInterfaceDecl::ivar_iterator iter = ClassDecl->ivar_begin(), 11837ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar endIter = ClassDecl->ivar_end() ; iter != endIter ; iter++) { 11847ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Store the name 11858a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall IvarNames.push_back(MakeConstantString((*iter)->getNameAsString())); 11867ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Get the type encoding for this ivar 11877ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 11880d504c1da852e58ff802545c823ecff3b6c654b8Daniel Dunbar Context.getObjCEncodingForType((*iter)->getType(), TypeStr); 11898a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall IvarTypes.push_back(MakeConstantString(TypeStr)); 11907ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Get the offset 1191389a0e8b6568932780dfd500790494e5fb598058Daniel Dunbar uint64_t Offset = 0; 1192d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian uint64_t BaseOffset = ComputeIvarBaseOffset(CGM, ClassDecl, *iter); 11939cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian if (CGM.getContext().getLangOptions().ObjCNonFragileABI) { 1194d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Offset = BaseOffset - superInstanceSize; 11959cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 11967ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar IvarOffsets.push_back( 11970032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::ConstantInt::get(llvm::Type::getInt32Ty(VMContext), Offset)); 1198d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian IvarOffsetValues.push_back(new llvm::GlobalVariable(TheModule, IntTy, 1199d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian false, llvm::GlobalValue::ExternalLinkage, 1200d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ConstantInt::get(IntTy, BaseOffset), 1201d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian "__objc_ivar_offset_value_" + ClassName +"." + 1202d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian (*iter)->getNameAsString())); 12037ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 1204d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *IvarOffsetArrayInit = 1205d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ConstantArray::get(llvm::ArrayType::get(PtrToIntTy, 1206d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian IvarOffsetValues.size()), IvarOffsetValues); 1207d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::GlobalVariable *IvarOffsetArray = new llvm::GlobalVariable(TheModule, 1208d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian IvarOffsetArrayInit->getType(), false, 1209d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::GlobalValue::InternalLinkage, IvarOffsetArrayInit, 1210d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ".ivar.offsets"); 12117ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 12127ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about instance methods 12137ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<Selector, 16> InstanceMethodSels; 12147ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> InstanceMethodTypes; 12151eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump for (ObjCImplementationDecl::instmeth_iterator 121617945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = OID->instmeth_begin(), endIter = OID->instmeth_end(); 1217653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter != endIter ; iter++) { 12187ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar InstanceMethodSels.push_back((*iter)->getSelector()); 12197ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 12207ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar Context.getObjCEncodingForMethodDecl((*iter),TypeStr); 12218a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall InstanceMethodTypes.push_back(MakeConstantString(TypeStr)); 12227ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 1223d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1224d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *Properties = GeneratePropertyList(OID, InstanceMethodSels, 1225d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian InstanceMethodTypes); 1226d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 12277ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 12287ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about class methods 12297ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<Selector, 16> ClassMethodSels; 12307ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> ClassMethodTypes; 1231653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor for (ObjCImplementationDecl::classmeth_iterator 123217945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = OID->classmeth_begin(), endIter = OID->classmeth_end(); 1233653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter != endIter ; iter++) { 12347ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar ClassMethodSels.push_back((*iter)->getSelector()); 12357ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 12367ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar Context.getObjCEncodingForMethodDecl((*iter),TypeStr); 12378a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall ClassMethodTypes.push_back(MakeConstantString(TypeStr)); 12387ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 12397ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect the names of referenced protocols 12407ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<std::string, 16> Protocols; 12417ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar const ObjCList<ObjCProtocolDecl> &Protos =ClassDecl->getReferencedProtocols(); 12427ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar for (ObjCList<ObjCProtocolDecl>::iterator I = Protos.begin(), 12437ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar E = Protos.end(); I != E; ++I) 1244d9d22dd9c94618490dbffb0e2caf222530ca39d3Chris Lattner Protocols.push_back((*I)->getNameAsString()); 12457ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 12467ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 12477ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 124820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Get the superclass pointer. 124920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SuperClass; 12508ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner if (!SuperClassName.empty()) { 125120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov SuperClass = MakeConstantString(SuperClassName, ".super_class_name"); 125220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } else { 125303e205031b08669f05c41eed5b896fc94c4a12bbOwen Anderson SuperClass = llvm::ConstantPointerNull::get(PtrToInt8Ty); 125420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 125520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Empty vector used to construct empty method lists 125620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::SmallVector<llvm::Constant*, 1> empty; 125720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Generate the method and instance variable lists 125820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MethodList = GenerateMethodList(ClassName, "", 1259a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner InstanceMethodSels, InstanceMethodTypes, false); 126020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ClassMethodList = GenerateMethodList(ClassName, "", 1261a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner ClassMethodSels, ClassMethodTypes, true); 126220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *IvarList = GenerateIvarList(IvarNames, IvarTypes, 126320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IvarOffsets); 12641eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Irrespective of whether we are compiling for a fragile or non-fragile ABI, 12658a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // we emit a symbol containing the offset for each ivar in the class. This 12668a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // allows code compiled for the non-Fragile ABI to inherit from code compiled 12678a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // for the legacy ABI, without causing problems. The converse is also 12688a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // possible, but causes all ivar accesses to be fragile. 12698a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall int i = 0; 12708a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // Offset pointer for getting at the correct field in the ivar list when 12718a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // setting up the alias. These are: The base address for the global, the 12728a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // ivar array (second field), the ivar in this list (set for each ivar), and 12738a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // the offset (third field in ivar structure) 12748a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall const llvm::Type *IndexTy = llvm::Type::getInt32Ty(VMContext); 12758a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::Constant *offsetPointerIndexes[] = {Zeros[0], 12761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::ConstantInt::get(IndexTy, 1), 0, 12778a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::ConstantInt::get(IndexTy, 2) }; 12788a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall 12798a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall for (ObjCInterfaceDecl::ivar_iterator iter = ClassDecl->ivar_begin(), 12808a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall endIter = ClassDecl->ivar_end() ; iter != endIter ; iter++) { 12818a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall const std::string Name = "__objc_ivar_offset_" + ClassName + '.' 12828a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall +(*iter)->getNameAsString(); 12838a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall offsetPointerIndexes[2] = llvm::ConstantInt::get(IndexTy, i++); 12848a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // Get the correct ivar field 12858a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::Constant *offsetValue = llvm::ConstantExpr::getGetElementPtr( 12868a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall IvarList, offsetPointerIndexes, 4); 12878a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // Get the existing alias, if one exists. 12888a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::GlobalVariable *offset = TheModule.getNamedGlobal(Name); 12898a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall if (offset) { 12908a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall offset->setInitializer(offsetValue); 12918a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // If this is the real definition, change its linkage type so that 12928a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // different modules will use this one, rather than their private 12938a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // copy. 12948a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall offset->setLinkage(llvm::GlobalValue::ExternalLinkage); 12958a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall } else { 12968a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // Add a new alias if there isn't one already. 12978a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall offset = new llvm::GlobalVariable(TheModule, offsetValue->getType(), 12988a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall false, llvm::GlobalValue::ExternalLinkage, offsetValue, Name); 12998a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall } 13008a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall } 130120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov //Generate metaclass for class methods 130220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MetaClassStruct = GenerateClassStructure(NULLPtr, 1303d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian NULLPtr, 0x12L, /*name*/"", 0, Zeros[0], GenerateIvarList( 1304d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian empty, empty, empty), ClassMethodList, NULLPtr, NULLPtr, NULLPtr); 13055efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar 130620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Generate the class structure 13078ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner llvm::Constant *ClassStruct = 1308d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian GenerateClassStructure(MetaClassStruct, SuperClass, 0x11L, 13098ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner ClassName.c_str(), 0, 13104a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson llvm::ConstantInt::get(LongTy, instanceSize), IvarList, 1311d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MethodList, GenerateProtocolList(Protocols), IvarOffsetArray, 1312d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Properties); 13135efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar 13145efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar // Resolve the class aliases, if they exist. 13155efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar if (ClassPtrAlias) { 13165efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar ClassPtrAlias->setAliasee( 13173c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::ConstantExpr::getBitCast(ClassStruct, IdTy)); 13185efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar ClassPtrAlias = 0; 13195efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } 13205efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar if (MetaClassPtrAlias) { 13215efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar MetaClassPtrAlias->setAliasee( 13223c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::ConstantExpr::getBitCast(MetaClassStruct, IdTy)); 13235efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar MetaClassPtrAlias = 0; 13245efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } 13255efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar 132620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Add class structure to list to be added to the symtab later 13273c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson ClassStruct = llvm::ConstantExpr::getBitCast(ClassStruct, PtrToInt8Ty); 132820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.push_back(ClassStruct); 132920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 133020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 1331c38e9affd4519ea199af22419c8c794973cc4b23Fariborz Jahanian 13321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumpllvm::Function *CGObjCGNU::ModuleInitFunction() { 133320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Only emit an ObjC load function if no Objective-C stuff has been called 133420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov if (Classes.empty() && Categories.empty() && ConstantStrings.empty() && 133520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ExistingProtocols.empty() && TypedSelectors.empty() && 13365f58b911304f7d114f929d1726a09cd1c828a5ddAnton Korobeynikov UntypedSelectors.empty()) 133720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return NULL; 13381b8956e1ce4c5770982d6e59edb16979b500677aEli Friedman 1339d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Add all referenced protocols to a category. 1340d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian GenerateProtocolHolderCategory(); 1341d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1342e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::StructType *SelStructTy = dyn_cast<llvm::StructType>( 1343e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner SelectorTy->getElementType()); 1344e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::Type *SelStructPtrTy = SelectorTy; 1345e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner bool isSelOpaque = false; 1346e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner if (SelStructTy == 0) { 134747a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson SelStructTy = llvm::StructType::get(VMContext, PtrToInt8Ty, 134847a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson PtrToInt8Ty, NULL); 134996e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson SelStructPtrTy = llvm::PointerType::getUnqual(SelStructTy); 1350e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner isSelOpaque = true; 1351e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner } 1352e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner 13531b8956e1ce4c5770982d6e59edb16979b500677aEli Friedman // Name the ObjC types to make the IR a bit easier to read 1354e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner TheModule.addTypeName(".objc_selector", SelStructPtrTy); 13551b8956e1ce4c5770982d6e59edb16979b500677aEli Friedman TheModule.addTypeName(".objc_id", IdTy); 13561b8956e1ce4c5770982d6e59edb16979b500677aEli Friedman TheModule.addTypeName(".objc_imp", IMPTy); 13571b8956e1ce4c5770982d6e59edb16979b500677aEli Friedman 135820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 135971238f67c5df13eef19450d66b7a7ab28377192aChris Lattner llvm::Constant *Statics = NULLPtr; 136020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Generate statics list: 136171238f67c5df13eef19450d66b7a7ab28377192aChris Lattner if (ConstantStrings.size()) { 136296e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *StaticsArrayTy = llvm::ArrayType::get(PtrToInt8Ty, 136371238f67c5df13eef19450d66b7a7ab28377192aChris Lattner ConstantStrings.size() + 1); 136471238f67c5df13eef19450d66b7a7ab28377192aChris Lattner ConstantStrings.push_back(NULLPtr); 13658a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall 13668a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall const char *StringClass = CGM.getLangOptions().ObjCConstantStringClass; 13678a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall if (!StringClass) StringClass = "NXConstantString"; 13688a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall Elements.push_back(MakeConstantString(StringClass, 13698a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall ".objc_static_class_name")); 13707db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson Elements.push_back(llvm::ConstantArray::get(StaticsArrayTy, 137171238f67c5df13eef19450d66b7a7ab28377192aChris Lattner ConstantStrings)); 13721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::StructType *StaticsListTy = 137347a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType::get(VMContext, PtrToInt8Ty, StaticsArrayTy, NULL); 1374a1cf15f4680e5cf39e72e28c5ea854fcba792e84Owen Anderson llvm::Type *StaticsListPtrTy = 137596e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(StaticsListTy); 137671238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Statics = MakeGlobal(StaticsListTy, Elements, ".objc_statics"); 13771eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::ArrayType *StaticsListArrayTy = 137896e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType::get(StaticsListPtrTy, 2); 137971238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Elements.clear(); 138071238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Elements.push_back(Statics); 1381c9c88b4159791c48e486ca94e3743b5979e2b7a6Owen Anderson Elements.push_back(llvm::Constant::getNullValue(StaticsListPtrTy)); 138271238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Statics = MakeGlobal(StaticsListArrayTy, Elements, ".objc_statics_ptr"); 13833c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Statics = llvm::ConstantExpr::getBitCast(Statics, PtrTy); 138471238f67c5df13eef19450d66b7a7ab28377192aChris Lattner } 138520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Array of classes, categories, and constant objects 138696e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *ClassListTy = llvm::ArrayType::get(PtrToInt8Ty, 138720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.size() + Categories.size() + 2); 13881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::StructType *SymTabTy = llvm::StructType::get(VMContext, 138947a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson LongTy, SelStructPtrTy, 13900032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::Type::getInt16Ty(VMContext), 13910032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::Type::getInt16Ty(VMContext), 1392630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner ClassListTy, NULL); 139320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 139420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 139520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Pointer to an array of selectors used in this module. 139620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Selectors; 139720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (std::map<TypedSelector, llvm::GlobalAlias*>::iterator 139820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter = TypedSelectors.begin(), iterEnd = TypedSelectors.end(); 139920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter != iterEnd ; ++iter) { 1400d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(ExportUniqueString(iter->first.first, ".objc_sel_name")); 1401a7c5b0832cc78efa899463b8faa573a1473d53d2David Chisnall Elements.push_back(MakeConstantString(iter->first.second, 1402630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner ".objc_sel_types")); 140308e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson Selectors.push_back(llvm::ConstantStruct::get(SelStructTy, Elements)); 140420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 140520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 140620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (llvm::StringMap<llvm::GlobalAlias*>::iterator 140720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter = UntypedSelectors.begin(), iterEnd = UntypedSelectors.end(); 1408630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner iter != iterEnd; ++iter) { 140920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back( 1410d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ExportUniqueString(iter->getKeyData(), ".objc_sel_name")); 141120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 141208e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson Selectors.push_back(llvm::ConstantStruct::get(SelStructTy, Elements)); 141320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 141420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 141520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 141620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 141708e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson Selectors.push_back(llvm::ConstantStruct::get(SelStructTy, Elements)); 141820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 141920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Number of static selectors 14204a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Elements.push_back(llvm::ConstantInt::get(LongTy, Selectors.size() )); 142120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SelectorList = MakeGlobal( 142296e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType::get(SelStructTy, Selectors.size()), Selectors, 142320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ".objc_selector_list"); 14241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Elements.push_back(llvm::ConstantExpr::getBitCast(SelectorList, 1425e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner SelStructPtrTy)); 142620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 142720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Now that all of the static selectors exist, create pointers to them. 142820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov int index = 0; 142920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (std::map<TypedSelector, llvm::GlobalAlias*>::iterator 143020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter=TypedSelectors.begin(), iterEnd =TypedSelectors.end(); 143120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter != iterEnd; ++iter) { 143220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Idxs[] = {Zeros[0], 14330032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::ConstantInt::get(llvm::Type::getInt32Ty(VMContext), index++), Zeros[0]}; 14341c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson llvm::Constant *SelPtr = new llvm::GlobalVariable(TheModule, SelStructPtrTy, 14351c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson true, llvm::GlobalValue::InternalLinkage, 14363c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::ConstantExpr::getGetElementPtr(SelectorList, Idxs, 2), 14371c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson ".objc_sel_ptr"); 1438e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner // If selectors are defined as an opaque type, cast the pointer to this 1439e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner // type. 1440e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner if (isSelOpaque) { 14413c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson SelPtr = llvm::ConstantExpr::getBitCast(SelPtr, 144296e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(SelectorTy)); 1443e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner } 144420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov (*iter).second->setAliasee(SelPtr); 144520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 144620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (llvm::StringMap<llvm::GlobalAlias*>::iterator 144720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter=UntypedSelectors.begin(), iterEnd = UntypedSelectors.end(); 144820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter != iterEnd; iter++) { 144920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Idxs[] = {Zeros[0], 14500032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::ConstantInt::get(llvm::Type::getInt32Ty(VMContext), index++), Zeros[0]}; 1451bb1c8600218b3244340331165fc7cba7bf227655Mike Stump llvm::Constant *SelPtr = new llvm::GlobalVariable 14521eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump (TheModule, SelStructPtrTy, 1453bb1c8600218b3244340331165fc7cba7bf227655Mike Stump true, llvm::GlobalValue::InternalLinkage, 1454bb1c8600218b3244340331165fc7cba7bf227655Mike Stump llvm::ConstantExpr::getGetElementPtr(SelectorList, Idxs, 2), 1455bb1c8600218b3244340331165fc7cba7bf227655Mike Stump ".objc_sel_ptr"); 1456e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner // If selectors are defined as an opaque type, cast the pointer to this 1457e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner // type. 1458e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner if (isSelOpaque) { 14593c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson SelPtr = llvm::ConstantExpr::getBitCast(SelPtr, 146096e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(SelectorTy)); 1461e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner } 146220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov (*iter).second->setAliasee(SelPtr); 146320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 146420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Number of classes defined. 14651eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Elements.push_back(llvm::ConstantInt::get(llvm::Type::getInt16Ty(VMContext), 146620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.size())); 146720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Number of categories defined 14681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Elements.push_back(llvm::ConstantInt::get(llvm::Type::getInt16Ty(VMContext), 146920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Categories.size())); 147020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an array of classes, then categories, then static object instances 147120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.insert(Classes.end(), Categories.begin(), Categories.end()); 147220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // NULL-terminated list of static object instances (mainly constant strings) 147320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.push_back(Statics); 147420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.push_back(NULLPtr); 14757db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson llvm::Constant *ClassList = llvm::ConstantArray::get(ClassListTy, Classes); 147620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ClassList); 14771eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Construct the symbol table 147820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SymTab= MakeGlobal(SymTabTy, Elements); 147920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 148020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // The symbol table is contained in a module which has some version-checking 148120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // constants 148247a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson llvm::StructType * ModuleTy = llvm::StructType::get(VMContext, LongTy, LongTy, 148396e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson PtrToInt8Ty, llvm::PointerType::getUnqual(SymTabTy), NULL); 148420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 148520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Runtime version used for compatibility checking. 14869cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian if (CGM.getContext().getLangOptions().ObjCNonFragileABI) { 14871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Elements.push_back(llvm::ConstantInt::get(LongTy, 1488d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian NonFragileRuntimeVersion)); 14899cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } else { 14904a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Elements.push_back(llvm::ConstantInt::get(LongTy, RuntimeVersion)); 14919cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 149291a0b51438e5259a79d68d7450c453827beed9e2Fariborz Jahanian // sizeof(ModuleTy) 149391a0b51438e5259a79d68d7450c453827beed9e2Fariborz Jahanian llvm::TargetData td = llvm::TargetData::TargetData(&TheModule); 14944a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Elements.push_back(llvm::ConstantInt::get(LongTy, 1495a1cf15f4680e5cf39e72e28c5ea854fcba792e84Owen Anderson td.getTypeSizeInBits(ModuleTy)/8)); 149620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov //FIXME: Should be the path to the file where this module was declared 149720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 149820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(SymTab); 149920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Value *Module = MakeGlobal(ModuleTy, Elements); 150020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 150120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create the load function calling the runtime entry point with the module 150220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // structure 150320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Function * LoadFunction = llvm::Function::Create( 15040032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::FunctionType::get(llvm::Type::getVoidTy(VMContext), false), 150520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::GlobalValue::InternalLinkage, ".objc_load_function", 150620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov &TheModule); 15070032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::BasicBlock *EntryBB = 15080032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::BasicBlock::Create(VMContext, "entry", LoadFunction); 1509a1cf15f4680e5cf39e72e28c5ea854fcba792e84Owen Anderson CGBuilderTy Builder(VMContext); 151020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Builder.SetInsertPoint(EntryBB); 151126c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian 151226c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian std::vector<const llvm::Type*> Params(1, 151396e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(ModuleTy)); 151496e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::Value *Register = CGM.CreateRuntimeFunction(llvm::FunctionType::get( 15150032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::Type::getVoidTy(VMContext), Params, true), "__objc_exec_class"); 151620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Builder.CreateCall(Register, Module); 151720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Builder.CreateRetVoid(); 15189cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian 151920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return LoadFunction; 152020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 15217ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 1522679a502d462ef819e6175b58e255ca3f3391e7cfFariborz Jahanianllvm::Function *CGObjCGNU::GenerateMethod(const ObjCMethodDecl *OMD, 15231eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const ObjCContainerDecl *CD) { 15241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const ObjCCategoryImplDecl *OCD = 15253e0a540b6d846178857289ec0eb8470a278d11a3Steve Naroff dyn_cast<ObjCCategoryImplDecl>(OMD->getDeclContext()); 1526077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner std::string CategoryName = OCD ? OCD->getNameAsString() : ""; 1527077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner std::string ClassName = OMD->getClassInterface()->getNameAsString(); 1528077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner std::string MethodName = OMD->getSelector().getAsString(); 1529f8d49f64ef6ab7e632717a31631fc289aab69428Douglas Gregor bool isClassMethod = !OMD->isInstanceMethod(); 1530391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner 1531541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel Dunbar CodeGenTypes &Types = CGM.getTypes(); 15321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const llvm::FunctionType *MethodTy = 1533541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel Dunbar Types.GetFunctionType(Types.getFunctionInfo(OMD), OMD->isVariadic()); 153420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::string FunctionName = SymbolNameForMethod(ClassName, CategoryName, 153520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov MethodName, isClassMethod); 153620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 1537d6c93d703541c992e06eb9a59a2d826a30da65b2Daniel Dunbar llvm::Function *Method 15381eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump = llvm::Function::Create(MethodTy, 15391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::GlobalValue::InternalLinkage, 15401eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump FunctionName, 15411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump &TheModule); 1542391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner return Method; 1543391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner} 1544391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner 154549f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbarllvm::Function *CGObjCGNU::GetPropertyGetFunction() { 15461eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump std::vector<const llvm::Type*> Params; 15471eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const llvm::Type *BoolTy = 15481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump CGM.getTypes().ConvertType(CGM.getContext().BoolTy); 15491eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Params.push_back(IdTy); 15501eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Params.push_back(SelectorTy); 15511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // FIXME: Using LongTy for ptrdiff_t is probably broken on Win64 15521eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Params.push_back(LongTy); 15531eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Params.push_back(BoolTy); 15541eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // void objc_getProperty (id, SEL, ptrdiff_t, bool) 15551eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const llvm::FunctionType *FTy = 15561eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::FunctionType::get(IdTy, Params, false); 15571eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return cast<llvm::Function>(CGM.CreateRuntimeFunction(FTy, 15581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump "objc_getProperty")); 155949f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar} 156049f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar 156149f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbarllvm::Function *CGObjCGNU::GetPropertySetFunction() { 15621eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump std::vector<const llvm::Type*> Params; 15631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const llvm::Type *BoolTy = 15641eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump CGM.getTypes().ConvertType(CGM.getContext().BoolTy); 15651eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Params.push_back(IdTy); 15661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Params.push_back(SelectorTy); 15671eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // FIXME: Using LongTy for ptrdiff_t is probably broken on Win64 15681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Params.push_back(LongTy); 15691eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Params.push_back(IdTy); 15701eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Params.push_back(BoolTy); 15711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Params.push_back(BoolTy); 15721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // void objc_setProperty (id, SEL, ptrdiff_t, id, bool, bool) 15731eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const llvm::FunctionType *FTy = 15741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::FunctionType::get(llvm::Type::getVoidTy(VMContext), Params, false); 15751eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return cast<llvm::Function>(CGM.CreateRuntimeFunction(FTy, 15761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump "objc_setProperty")); 157749f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar} 157849f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar 1579309a4368cd299cff30ab22709e2b772cf8059e45Daniel Dunbarllvm::Constant *CGObjCGNU::EnumerationMutationFunction() { 1580309a4368cd299cff30ab22709e2b772cf8059e45Daniel Dunbar CodeGen::CodeGenTypes &Types = CGM.getTypes(); 1581309a4368cd299cff30ab22709e2b772cf8059e45Daniel Dunbar ASTContext &Ctx = CGM.getContext(); 1582309a4368cd299cff30ab22709e2b772cf8059e45Daniel Dunbar // void objc_enumerationMutation (id) 1583309a4368cd299cff30ab22709e2b772cf8059e45Daniel Dunbar llvm::SmallVector<QualType,16> Params; 15840f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall Params.push_back(ASTIdTy); 1585309a4368cd299cff30ab22709e2b772cf8059e45Daniel Dunbar const llvm::FunctionType *FTy = 1586309a4368cd299cff30ab22709e2b772cf8059e45Daniel Dunbar Types.GetFunctionType(Types.getFunctionInfo(Ctx.VoidTy, Params), false); 1587309a4368cd299cff30ab22709e2b772cf8059e45Daniel Dunbar return CGM.CreateRuntimeFunction(FTy, "objc_enumerationMutation"); 15882abd89c039e835e84519a4cd8a7495899a70153dAnders Carlsson} 15892abd89c039e835e84519a4cd8a7495899a70153dAnders Carlsson 1590bd71be4683c195260d5245118b1e13e6b2e20504Fariborz Jahanianvoid CGObjCGNU::EmitTryOrSynchronizedStmt(CodeGen::CodeGenFunction &CGF, 1591bd71be4683c195260d5245118b1e13e6b2e20504Fariborz Jahanian const Stmt &S) { 15925dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Pointer to the personality function 15935dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Constant *Personality = 15940032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson CGM.CreateRuntimeFunction(llvm::FunctionType::get(llvm::Type::getInt32Ty(VMContext), 1595b59761b2530bf54926bf67de11956f3820ac38d9Chris Lattner true), 15965dc0867af17b3bd6f567897433853b2b4767446cChris Lattner "__gnu_objc_personality_v0"); 15973c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Personality = llvm::ConstantExpr::getBitCast(Personality, PtrTy); 15985dc0867af17b3bd6f567897433853b2b4767446cChris Lattner std::vector<const llvm::Type*> Params; 15995dc0867af17b3bd6f567897433853b2b4767446cChris Lattner Params.push_back(PtrTy); 16005dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Value *RethrowFn = 16010032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson CGM.CreateRuntimeFunction(llvm::FunctionType::get(llvm::Type::getVoidTy(VMContext), 16025dc0867af17b3bd6f567897433853b2b4767446cChris Lattner Params, false), "_Unwind_Resume_or_Rethrow"); 16035dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 16045dc0867af17b3bd6f567897433853b2b4767446cChris Lattner bool isTry = isa<ObjCAtTryStmt>(S); 16055dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *TryBlock = CGF.createBasicBlock("try"); 16065dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *PrevLandingPad = CGF.getInvokeDest(); 16075dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *TryHandler = CGF.createBasicBlock("try.handler"); 1608d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner llvm::BasicBlock *CatchInCatch = CGF.createBasicBlock("catch.rethrow"); 16095dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *FinallyBlock = CGF.createBasicBlock("finally"); 16105dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *FinallyRethrow = CGF.createBasicBlock("finally.throw"); 16115dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *FinallyEnd = CGF.createBasicBlock("finally.end"); 16125dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 16135dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // GNU runtime does not currently support @synchronized() 16145dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (!isTry) { 1615d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner std::vector<const llvm::Type*> Args(1, IdTy); 1616d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner llvm::FunctionType *FTy = 16170032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::FunctionType::get(llvm::Type::getVoidTy(VMContext), Args, false); 1618d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner llvm::Value *SyncEnter = CGM.CreateRuntimeFunction(FTy, "objc_sync_enter"); 16191eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *SyncArg = 1620d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.EmitScalarExpr(cast<ObjCAtSynchronizedStmt>(S).getSynchExpr()); 1621d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner SyncArg = CGF.Builder.CreateBitCast(SyncArg, IdTy); 1622d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.Builder.CreateCall(SyncEnter, SyncArg); 16235dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 16245dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 1625d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner 16265dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Push an EH context entry, used for handling rethrows and jumps 16275dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // through finally. 16285dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.PushCleanupBlock(FinallyBlock); 16295dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 16305dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Emit the statements in the @try {} block 16315dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.setInvokeDest(TryHandler); 16325dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 16335dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(TryBlock); 16341eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump CGF.EmitStmt(isTry ? cast<ObjCAtTryStmt>(S).getTryBody() 16355dc0867af17b3bd6f567897433853b2b4767446cChris Lattner : cast<ObjCAtSynchronizedStmt>(S).getSynchBody()); 16365dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 16375dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Jump to @finally if there is no exception 16385dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBranchThroughCleanup(FinallyEnd); 16395dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 16405dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Emit the handlers 16415dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(TryHandler); 16425dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 1643bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner // Get the correct versions of the exception handling intrinsics 1644bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner llvm::TargetData td = llvm::TargetData::TargetData(&TheModule); 1645bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner int PointerWidth = td.getTypeSizeInBits(PtrTy); 1646bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner assert((PointerWidth == 32 || PointerWidth == 64) && 1647bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner "Can't yet handle exceptions if pointers are not 32 or 64 bits"); 16481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *llvm_eh_exception = 16495dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.CGM.getIntrinsic(llvm::Intrinsic::eh_exception); 1650bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner llvm::Value *llvm_eh_selector = PointerWidth == 32 ? 1651bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner CGF.CGM.getIntrinsic(llvm::Intrinsic::eh_selector_i32) : 1652bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner CGF.CGM.getIntrinsic(llvm::Intrinsic::eh_selector_i64); 1653bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner llvm::Value *llvm_eh_typeid_for = PointerWidth == 32 ? 1654bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner CGF.CGM.getIntrinsic(llvm::Intrinsic::eh_typeid_for_i32) : 1655bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner CGF.CGM.getIntrinsic(llvm::Intrinsic::eh_typeid_for_i64); 16565dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 16575dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Exception object 16585dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Value *Exc = CGF.Builder.CreateCall(llvm_eh_exception, "exc"); 16595dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Value *RethrowPtr = CGF.CreateTempAlloca(Exc->getType(), "_rethrow"); 16605dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 16615dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::SmallVector<llvm::Value*, 8> ESelArgs; 16625dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::SmallVector<std::pair<const ParmVarDecl*, const Stmt*>, 8> Handlers; 16635dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 16645dc0867af17b3bd6f567897433853b2b4767446cChris Lattner ESelArgs.push_back(Exc); 16655dc0867af17b3bd6f567897433853b2b4767446cChris Lattner ESelArgs.push_back(Personality); 16665dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 16675dc0867af17b3bd6f567897433853b2b4767446cChris Lattner bool HasCatchAll = false; 16685dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Only @try blocks are allowed @catch blocks, but both can have @finally 16695dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (isTry) { 16705dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (const ObjCAtCatchStmt* CatchStmt = 16715dc0867af17b3bd6f567897433853b2b4767446cChris Lattner cast<ObjCAtTryStmt>(S).getCatchStmts()) { 1672d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.setInvokeDest(CatchInCatch); 16735dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 16745dc0867af17b3bd6f567897433853b2b4767446cChris Lattner for (; CatchStmt; CatchStmt = CatchStmt->getNextCatchStmt()) { 16755dc0867af17b3bd6f567897433853b2b4767446cChris Lattner const ParmVarDecl *CatchDecl = CatchStmt->getCatchParamDecl(); 1676bb1c8600218b3244340331165fc7cba7bf227655Mike Stump Handlers.push_back(std::make_pair(CatchDecl, 1677bb1c8600218b3244340331165fc7cba7bf227655Mike Stump CatchStmt->getCatchBody())); 16785dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 16795dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // @catch() and @catch(id) both catch any ObjC exception 168014108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff if (!CatchDecl || CatchDecl->getType()->isObjCIdType() 16815dc0867af17b3bd6f567897433853b2b4767446cChris Lattner || CatchDecl->getType()->isObjCQualifiedIdType()) { 16825dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Use i8* null here to signal this is a catch all, not a cleanup. 16835dc0867af17b3bd6f567897433853b2b4767446cChris Lattner ESelArgs.push_back(NULLPtr); 16845dc0867af17b3bd6f567897433853b2b4767446cChris Lattner HasCatchAll = true; 16855dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // No further catches after this one will ever by reached 16865dc0867af17b3bd6f567897433853b2b4767446cChris Lattner break; 16871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 16885dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 16895dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // All other types should be Objective-C interface pointer types. 16901eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const ObjCObjectPointerType *OPT = 169114108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff CatchDecl->getType()->getAsObjCObjectPointerType(); 169214108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff assert(OPT && "Invalid @catch type."); 16931eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const ObjCInterfaceType *IT = 169414108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff OPT->getPointeeType()->getAsObjCInterfaceType(); 16955dc0867af17b3bd6f567897433853b2b4767446cChris Lattner assert(IT && "Invalid @catch type."); 1696bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner llvm::Value *EHType = 1697bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner MakeConstantString(IT->getDecl()->getNameAsString()); 16985dc0867af17b3bd6f567897433853b2b4767446cChris Lattner ESelArgs.push_back(EHType); 16995dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 17005dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 17015dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 17025dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 17035dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // We use a cleanup unless there was already a catch all. 17045dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (!HasCatchAll) { 17050032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson ESelArgs.push_back(llvm::ConstantInt::get(llvm::Type::getInt32Ty(VMContext), 0)); 17065dc0867af17b3bd6f567897433853b2b4767446cChris Lattner Handlers.push_back(std::make_pair((const ParmVarDecl*) 0, (const Stmt*) 0)); 17075dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 17085dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 17095dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Find which handler was matched. 1710bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner llvm::Value *ESelector = CGF.Builder.CreateCall(llvm_eh_selector, 17115dc0867af17b3bd6f567897433853b2b4767446cChris Lattner ESelArgs.begin(), ESelArgs.end(), "selector"); 17125dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 17135dc0867af17b3bd6f567897433853b2b4767446cChris Lattner for (unsigned i = 0, e = Handlers.size(); i != e; ++i) { 17145dc0867af17b3bd6f567897433853b2b4767446cChris Lattner const ParmVarDecl *CatchParam = Handlers[i].first; 17155dc0867af17b3bd6f567897433853b2b4767446cChris Lattner const Stmt *CatchBody = Handlers[i].second; 17165dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 17175dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *Next = 0; 17185dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 17195dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // The last handler always matches. 17205dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (i + 1 != e) { 17215dc0867af17b3bd6f567897433853b2b4767446cChris Lattner assert(CatchParam && "Only last handler can be a catch all."); 17225dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 17235dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Test whether this block matches the type for the selector and branch 17245dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // to Match if it does, or to the next BB if it doesn't. 17255dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *Match = CGF.createBasicBlock("match"); 17265dc0867af17b3bd6f567897433853b2b4767446cChris Lattner Next = CGF.createBasicBlock("catch.next"); 1727bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner llvm::Value *Id = CGF.Builder.CreateCall(llvm_eh_typeid_for, 17285dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateBitCast(ESelArgs[i+2], PtrTy)); 17295dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateCondBr(CGF.Builder.CreateICmpEQ(ESelector, Id), Match, 17305dc0867af17b3bd6f567897433853b2b4767446cChris Lattner Next); 17315dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 17325dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(Match); 17335dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 17341eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 17355dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (CatchBody) { 17365dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Value *ExcObject = CGF.Builder.CreateBitCast(Exc, 17375dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.ConvertType(CatchParam->getType())); 17381eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 17395dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Bind the catch parameter if it exists. 17405dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (CatchParam) { 17415dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // CatchParam is a ParmVarDecl because of the grammar 17425dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // construction used to handle this, but for codegen purposes 17435dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // we treat this as a local decl. 17445dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitLocalBlockVarDecl(*CatchParam); 17455dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateStore(ExcObject, CGF.GetAddrOfLocalVar(CatchParam)); 17465dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 17475dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 17485dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.ObjCEHValueStack.push_back(ExcObject); 17495dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitStmt(CatchBody); 17505dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.ObjCEHValueStack.pop_back(); 17515dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 17525dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBranchThroughCleanup(FinallyEnd); 17535dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 17545dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (Next) 17555dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(Next); 17565dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } else { 17575dc0867af17b3bd6f567897433853b2b4767446cChris Lattner assert(!Next && "catchup should be last handler."); 17585dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 17595dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateStore(Exc, RethrowPtr); 17605dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBranchThroughCleanup(FinallyRethrow); 17615dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 17625dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 1763d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner // The @finally block is a secondary landing pad for any exceptions thrown in 1764d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner // @catch() blocks 1765d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.EmitBlock(CatchInCatch); 1766d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner Exc = CGF.Builder.CreateCall(llvm_eh_exception, "exc"); 1767d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner ESelArgs.clear(); 1768d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner ESelArgs.push_back(Exc); 1769d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner ESelArgs.push_back(Personality); 17700032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson ESelArgs.push_back(llvm::ConstantInt::get(llvm::Type::getInt32Ty(VMContext), 0)); 1771d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.Builder.CreateCall(llvm_eh_selector, ESelArgs.begin(), ESelArgs.end(), 1772d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner "selector"); 1773d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.Builder.CreateCall(llvm_eh_typeid_for, 1774d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.Builder.CreateIntToPtr(ESelArgs[2], PtrTy)); 1775d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.Builder.CreateStore(Exc, RethrowPtr); 1776d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.EmitBranchThroughCleanup(FinallyRethrow); 1777d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner 17785dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CodeGenFunction::CleanupBlockInfo Info = CGF.PopCleanupBlock(); 17795dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 17805dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.setInvokeDest(PrevLandingPad); 17815dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 17825dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(FinallyBlock); 17835dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 1784d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner 17855dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (isTry) { 17861eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (const ObjCAtFinallyStmt* FinallyStmt = 17875dc0867af17b3bd6f567897433853b2b4767446cChris Lattner cast<ObjCAtTryStmt>(S).getFinallyStmt()) 17885dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitStmt(FinallyStmt->getFinallyBody()); 17895dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } else { 1790d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner // Emit 'objc_sync_exit(expr)' as finally's sole statement for 17915dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // @synchronized. 1792d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner std::vector<const llvm::Type*> Args(1, IdTy); 1793d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner llvm::FunctionType *FTy = 17940032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::FunctionType::get(llvm::Type::getVoidTy(VMContext), Args, false); 1795d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner llvm::Value *SyncExit = CGM.CreateRuntimeFunction(FTy, "objc_sync_exit"); 17961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *SyncArg = 1797d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.EmitScalarExpr(cast<ObjCAtSynchronizedStmt>(S).getSynchExpr()); 1798d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner SyncArg = CGF.Builder.CreateBitCast(SyncArg, IdTy); 1799d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.Builder.CreateCall(SyncExit, SyncArg); 18005dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 18015dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 18025dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (Info.SwitchBlock) 18035dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(Info.SwitchBlock); 18045dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (Info.EndBlock) 18055dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(Info.EndBlock); 18065dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 18075dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Branch around the rethrow code. 18085dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBranch(FinallyEnd); 18095dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 18105dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(FinallyRethrow); 18115dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateCall(RethrowFn, CGF.Builder.CreateLoad(RethrowPtr)); 18125dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateUnreachable(); 18131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18145dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(FinallyEnd); 18155dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 181664d5d6c5903157c521af496479d06dc26032d718Anders Carlsson} 181764d5d6c5903157c521af496479d06dc26032d718Anders Carlsson 181864d5d6c5903157c521af496479d06dc26032d718Anders Carlssonvoid CGObjCGNU::EmitThrowStmt(CodeGen::CodeGenFunction &CGF, 181949f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar const ObjCAtThrowStmt &S) { 18205dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Value *ExceptionAsObject; 18215dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 18225dc0867af17b3bd6f567897433853b2b4767446cChris Lattner std::vector<const llvm::Type*> Args(1, IdTy); 18235dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::FunctionType *FTy = 18240032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::FunctionType::get(llvm::Type::getVoidTy(VMContext), Args, false); 18251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *ThrowFn = 18265dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGM.CreateRuntimeFunction(FTy, "objc_exception_throw"); 18271eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18285dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (const Expr *ThrowExpr = S.getThrowExpr()) { 18295dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Value *Exception = CGF.EmitScalarExpr(ThrowExpr); 18301e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian ExceptionAsObject = Exception; 18315dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } else { 18321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump assert((!CGF.ObjCEHValueStack.empty() && CGF.ObjCEHValueStack.back()) && 18335dc0867af17b3bd6f567897433853b2b4767446cChris Lattner "Unexpected rethrow outside @catch block."); 18345dc0867af17b3bd6f567897433853b2b4767446cChris Lattner ExceptionAsObject = CGF.ObjCEHValueStack.back(); 18355dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 18361e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian ExceptionAsObject = 18371e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian CGF.Builder.CreateBitCast(ExceptionAsObject, IdTy, "tmp"); 18381eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18395dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Note: This may have to be an invoke, if we want to support constructs like: 18405dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // @try { 18415dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // @throw(obj); 18425dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // } 18435dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // @catch(id) ... 18445dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // 18455dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // This is effectively turning @throw into an incredibly-expensive goto, but 18465dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // it may happen as a result of inlining followed by missed optimizations, or 18475dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // as a result of stupidity. 18485dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *UnwindBB = CGF.getInvokeDest(); 18495dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (!UnwindBB) { 18505dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateCall(ThrowFn, ExceptionAsObject); 18515dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateUnreachable(); 18525dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } else { 18535dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateInvoke(ThrowFn, UnwindBB, UnwindBB, &ExceptionAsObject, 18545dc0867af17b3bd6f567897433853b2b4767446cChris Lattner &ExceptionAsObject+1); 18555dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 18565dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Clear the insertion point to indicate we are in unreachable code. 18575dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.ClearInsertionPoint(); 185864d5d6c5903157c521af496479d06dc26032d718Anders Carlsson} 185964d5d6c5903157c521af496479d06dc26032d718Anders Carlsson 18603e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanianllvm::Value * CGObjCGNU::EmitObjCWeakRead(CodeGen::CodeGenFunction &CGF, 18611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *AddrWeakObj) { 18626dc2317b59cb1180a59f6c283d96b7a5dfeb5307Fariborz Jahanian return 0; 18636dc2317b59cb1180a59f6c283d96b7a5dfeb5307Fariborz Jahanian} 18646dc2317b59cb1180a59f6c283d96b7a5dfeb5307Fariborz Jahanian 18653e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanianvoid CGObjCGNU::EmitObjCWeakAssign(CodeGen::CodeGenFunction &CGF, 18661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *src, llvm::Value *dst) { 18673e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian return; 18683e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian} 18693e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian 187058626500527695865683d1d65053743de8770b60Fariborz Jahanianvoid CGObjCGNU::EmitObjCGlobalAssign(CodeGen::CodeGenFunction &CGF, 18711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *src, llvm::Value *dst) { 187258626500527695865683d1d65053743de8770b60Fariborz Jahanian return; 187358626500527695865683d1d65053743de8770b60Fariborz Jahanian} 187458626500527695865683d1d65053743de8770b60Fariborz Jahanian 18757eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanianvoid CGObjCGNU::EmitObjCIvarAssign(CodeGen::CodeGenFunction &CGF, 18761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *src, llvm::Value *dst) { 18777eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanian return; 18787eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanian} 18797eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanian 188058626500527695865683d1d65053743de8770b60Fariborz Jahanianvoid CGObjCGNU::EmitObjCStrongCastAssign(CodeGen::CodeGenFunction &CGF, 18811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *src, llvm::Value *dst) { 188258626500527695865683d1d65053743de8770b60Fariborz Jahanian return; 188358626500527695865683d1d65053743de8770b60Fariborz Jahanian} 188458626500527695865683d1d65053743de8770b60Fariborz Jahanian 1885082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanianvoid CGObjCGNU::EmitGCMemmoveCollectable(CodeGen::CodeGenFunction &CGF, 18861eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *DestPtr, 1887082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian llvm::Value *SrcPtr, 188808c321380fff07d476a19daab6d29522c046cd49Fariborz Jahanian QualType Ty) { 1889082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian return; 1890082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian} 1891082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian 18929cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanianllvm::GlobalVariable *CGObjCGNU::ObjCIvarOffsetVariable( 18939cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCInterfaceDecl *ID, 18949cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCIvarDecl *Ivar) { 18959cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const std::string Name = "__objc_ivar_offset_" + ID->getNameAsString() 18969cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian + '.' + Ivar->getNameAsString(); 18979cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // Emit the variable and initialize it with what we think the correct value 18989cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // is. This allows code compiled with non-fragile ivars to work correctly 18999cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // when linked against code which isn't (most of the time). 19008a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::GlobalVariable *IvarOffsetPointer = TheModule.getNamedGlobal(Name); 19018a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall if (!IvarOffsetPointer) { 19029cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian uint64_t Offset = ComputeIvarBaseOffset(CGM, ID, Ivar); 19039cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian llvm::ConstantInt *OffsetGuess = 19044a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson llvm::ConstantInt::get(LongTy, Offset, "ivar"); 19058a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // Don't emit the guess in non-PIC code because the linker will not be able 19068a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // to replace it with the real version for a library. In non-PIC code you 19078a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // must compile with the fragile ABI if you want to use ivars from a 19081eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // GCC-compiled class. 19098a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall if (CGM.getLangOptions().PICLevel) { 19108a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::GlobalVariable *IvarOffsetGV = new llvm::GlobalVariable(TheModule, 19118a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::Type::getInt32Ty(VMContext), false, 19128a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::GlobalValue::PrivateLinkage, OffsetGuess, Name+".guess"); 19138a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall IvarOffsetPointer = new llvm::GlobalVariable(TheModule, 19148a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall IvarOffsetGV->getType(), false, llvm::GlobalValue::LinkOnceAnyLinkage, 19158a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall IvarOffsetGV, Name); 19168a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall } else { 19178a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall IvarOffsetPointer = new llvm::GlobalVariable(TheModule, 19188a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::PointerType::getUnqual(llvm::Type::getInt32Ty(VMContext)), 19198a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall false, llvm::GlobalValue::ExternalLinkage, 0, Name); 19208a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall } 19219cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 19228a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall return IvarOffsetPointer; 19239cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian} 19249cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian 1925598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz JahanianLValue CGObjCGNU::EmitObjCValueForIvar(CodeGen::CodeGenFunction &CGF, 1926598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian QualType ObjectTy, 1927598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian llvm::Value *BaseValue, 1928598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian const ObjCIvarDecl *Ivar, 1929598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian unsigned CVRQualifiers) { 1930525c9b7baeeff022127cd1b167579f3bda73b3edDaniel Dunbar const ObjCInterfaceDecl *ID = ObjectTy->getAsObjCInterfaceType()->getDecl(); 19319777687562c338601c2f17906e65e1c1a0aad96fDaniel Dunbar return EmitValueForIvarAtOffset(CGF, ID, BaseValue, Ivar, CVRQualifiers, 19329777687562c338601c2f17906e65e1c1a0aad96fDaniel Dunbar EmitIvarOffset(CGF, ID, Ivar)); 19330bb20361a321593887f067515dd04cf109f4c74aFariborz Jahanian} 1934bb1c8600218b3244340331165fc7cba7bf227655Mike Stump 19359cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanianstatic const ObjCInterfaceDecl *FindIvarInterface(ASTContext &Context, 19369cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCInterfaceDecl *OID, 19379cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCIvarDecl *OIVD) { 19389cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian llvm::SmallVector<ObjCIvarDecl*, 16> Ivars; 19398e6ac1d80055fa37b9b84029c7e751624ba7f84cFariborz Jahanian Context.ShallowCollectObjCIvars(OID, Ivars); 19409cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian for (unsigned k = 0, e = Ivars.size(); k != e; ++k) { 19419cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian if (OIVD == Ivars[k]) 19429cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian return OID; 19439cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 19441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19459cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // Otherwise check in the super class. 19469cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian if (const ObjCInterfaceDecl *Super = OID->getSuperClass()) 19479cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian return FindIvarInterface(Context, Super, OIVD); 19481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19499cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian return 0; 19509cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian} 19510bb20361a321593887f067515dd04cf109f4c74aFariborz Jahanian 1952f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanianllvm::Value *CGObjCGNU::EmitIvarOffset(CodeGen::CodeGenFunction &CGF, 19532a03192a02dbf4fdff438d1e658356bde871aba4Daniel Dunbar const ObjCInterfaceDecl *Interface, 1954f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian const ObjCIvarDecl *Ivar) { 19558a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall if (CGM.getLangOptions().ObjCNonFragileABI) { 19569cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian Interface = FindIvarInterface(CGM.getContext(), Interface, Ivar); 19578a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall return CGF.Builder.CreateLoad(CGF.Builder.CreateLoad( 19588a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall ObjCIvarOffsetVariable(Interface, Ivar), false, "ivar")); 19599cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 19609777687562c338601c2f17906e65e1c1a0aad96fDaniel Dunbar uint64_t Offset = ComputeIvarBaseOffset(CGF.CGM, Interface, Ivar); 19614a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson return llvm::ConstantInt::get(LongTy, Offset, "ivar"); 1962f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian} 1963f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian 1964bb1c8600218b3244340331165fc7cba7bf227655Mike StumpCodeGen::CGObjCRuntime * 1965bb1c8600218b3244340331165fc7cba7bf227655Mike StumpCodeGen::CreateGNUObjCRuntime(CodeGen::CodeGenModule &CGM) { 1966dce1406f1c1f572cfd61c494546572d63461c741Chris Lattner return new CGObjCGNU(CGM); 19670f984268b05edab2cc555a427c441baa9c252658Chris Lattner} 1968