CGObjCGNU.cpp revision 1e64a9531bf6e9d99ad3271b3a735ef702689b06
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" 242bebbf0acee55404de4b8846713b64429e744e8fDaniel Dunbar#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; 4420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovstatic const int ProtocolVersion = 2; 450f984268b05edab2cc555a427c441baa9c252658Chris Lattner 460f984268b05edab2cc555a427c441baa9c252658Chris Lattnernamespace { 47dce1406f1c1f572cfd61c494546572d63461c741Chris Lattnerclass CGObjCGNU : public CodeGen::CGObjCRuntime { 480f984268b05edab2cc555a427c441baa9c252658Chris Lattnerprivate: 49dce1406f1c1f572cfd61c494546572d63461c741Chris Lattner CodeGen::CodeGenModule &CGM; 500f984268b05edab2cc555a427c441baa9c252658Chris Lattner llvm::Module &TheModule; 51e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::PointerType *SelectorTy; 52e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::PointerType *PtrToInt8Ty; 53b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian const llvm::FunctionType *IMPTy; 54e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::PointerType *IdTy; 55e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::IntegerType *IntTy; 56e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::PointerType *PtrTy; 57e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::IntegerType *LongTy; 58e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::PointerType *PtrToIntTy; 595efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar llvm::GlobalAlias *ClassPtrAlias; 605efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar llvm::GlobalAlias *MetaClassPtrAlias; 6120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Classes; 6220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Categories; 6320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> ConstantStrings; 6420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Function *LoadFunction; 6520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StringMap<llvm::Constant*> ExistingProtocols; 6620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov typedef std::pair<std::string, std::string> TypedSelector; 6720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::map<TypedSelector, llvm::GlobalAlias*> TypedSelectors; 6820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StringMap<llvm::GlobalAlias*> UntypedSelectors; 6920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Some zeros used for GEPs in lots of places. 7020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Zeros[2]; 7120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *NULLPtr; 7220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovprivate: 7320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateIvarList( 7420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarNames, 7520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarTypes, 7620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarOffsets); 7720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateMethodList(const std::string &ClassName, 7820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const std::string &CategoryName, 79a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner const llvm::SmallVectorImpl<Selector> &MethodSels, 8020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &MethodTypes, 8120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov bool isClassMethodList); 82f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::Constant *GenerateEmptyProtocol(const std::string &ProtocolName); 8320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateProtocolList( 8420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<std::string> &Protocols); 8520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateClassStructure( 8620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MetaClass, 8720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SuperClass, 8820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov unsigned info, 89d002cc6fc5b72bf00e3b7b4571ccf0f23c789b4bChris Lattner const char *Name, 9020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Version, 9120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *InstanceSize, 9220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *IVars, 9320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Methods, 9420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Protocols); 9520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateProtocolMethodList( 9620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &MethodNames, 9720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &MethodTypes); 9820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MakeConstantString(const std::string &Str, const std::string 9920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov &Name=""); 10020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MakeGlobal(const llvm::StructType *Ty, 10120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> &V, const std::string &Name=""); 10220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MakeGlobal(const llvm::ArrayType *Ty, 10320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> &V, const std::string &Name=""); 1040f984268b05edab2cc555a427c441baa9c252658Chris Lattnerpublic: 105dce1406f1c1f572cfd61c494546572d63461c741Chris Lattner CGObjCGNU(CodeGen::CodeGenModule &cgm); 10633fdb738a6c125f4c788733897021b7c1a062b0cSteve Naroff virtual llvm::Constant *GenerateConstantString(const ObjCStringLiteral *); 1078f2926b73ed635afecd020da787af6a837601a2bDaniel Dunbar virtual CodeGen::RValue 1088f2926b73ed635afecd020da787af6a837601a2bDaniel Dunbar GenerateMessageSend(CodeGen::CodeGenFunction &CGF, 1097f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar QualType ResultType, 1107f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar Selector Sel, 111f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar llvm::Value *Receiver, 11219cd87eb5fb3c197e631ce08fd52c446c4d4e8f1Daniel Dunbar bool IsClassMessage, 113df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian const CallArgList &CallArgs, 114df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian const ObjCMethodDecl *Method); 1158f2926b73ed635afecd020da787af6a837601a2bDaniel Dunbar virtual CodeGen::RValue 1168f2926b73ed635afecd020da787af6a837601a2bDaniel Dunbar GenerateMessageSendSuper(CodeGen::CodeGenFunction &CGF, 1177f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar QualType ResultType, 1187f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar Selector Sel, 119f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar const ObjCInterfaceDecl *Class, 1207ce77920a35060f1c8dd72e541e42ce296ccd168Fariborz Jahanian bool isCategoryImpl, 121f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar llvm::Value *Receiver, 12219cd87eb5fb3c197e631ce08fd52c446c4d4e8f1Daniel Dunbar bool IsClassMessage, 12319cd87eb5fb3c197e631ce08fd52c446c4d4e8f1Daniel Dunbar const CallArgList &CallArgs); 12445d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbar virtual llvm::Value *GetClass(CGBuilderTy &Builder, 125ddb2a3d55a24a1dbdf9152621642d9a4b4fc2f61Daniel Dunbar const ObjCInterfaceDecl *OID); 12645d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbar virtual llvm::Value *GetSelector(CGBuilderTy &Builder, Selector Sel); 127df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian virtual llvm::Value *GetSelector(CGBuilderTy &Builder, const ObjCMethodDecl 128df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian *Method); 1298e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner 130679a502d462ef819e6175b58e255ca3f3391e7cfFariborz Jahanian virtual llvm::Function *GenerateMethod(const ObjCMethodDecl *OMD, 131679a502d462ef819e6175b58e255ca3f3391e7cfFariborz Jahanian const ObjCContainerDecl *CD); 1327ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar virtual void GenerateCategory(const ObjCCategoryImplDecl *CMD); 1337ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar virtual void GenerateClass(const ObjCImplementationDecl *ClassDecl); 13445d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbar virtual llvm::Value *GenerateProtocolRef(CGBuilderTy &Builder, 135af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar const ObjCProtocolDecl *PD); 136af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar virtual void GenerateProtocol(const ObjCProtocolDecl *PD); 13720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov virtual llvm::Function *ModuleInitFunction(); 13849f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar virtual llvm::Function *GetPropertyGetFunction(); 13949f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar virtual llvm::Function *GetPropertySetFunction(); 1402abd89c039e835e84519a4cd8a7495899a70153dAnders Carlsson virtual llvm::Function *EnumerationMutationFunction(); 14164d5d6c5903157c521af496479d06dc26032d718Anders Carlsson 142bd71be4683c195260d5245118b1e13e6b2e20504Fariborz Jahanian virtual void EmitTryOrSynchronizedStmt(CodeGen::CodeGenFunction &CGF, 143bd71be4683c195260d5245118b1e13e6b2e20504Fariborz Jahanian const Stmt &S); 14464d5d6c5903157c521af496479d06dc26032d718Anders Carlsson virtual void EmitThrowStmt(CodeGen::CodeGenFunction &CGF, 14564d5d6c5903157c521af496479d06dc26032d718Anders Carlsson const ObjCAtThrowStmt &S); 1463e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian virtual llvm::Value * EmitObjCWeakRead(CodeGen::CodeGenFunction &CGF, 1476dc2317b59cb1180a59f6c283d96b7a5dfeb5307Fariborz Jahanian llvm::Value *AddrWeakObj); 1483e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian virtual void EmitObjCWeakAssign(CodeGen::CodeGenFunction &CGF, 1493e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian llvm::Value *src, llvm::Value *dst); 15058626500527695865683d1d65053743de8770b60Fariborz Jahanian virtual void EmitObjCGlobalAssign(CodeGen::CodeGenFunction &CGF, 15158626500527695865683d1d65053743de8770b60Fariborz Jahanian llvm::Value *src, llvm::Value *dest); 1527eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanian virtual void EmitObjCIvarAssign(CodeGen::CodeGenFunction &CGF, 1537eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanian llvm::Value *src, llvm::Value *dest); 15458626500527695865683d1d65053743de8770b60Fariborz Jahanian virtual void EmitObjCStrongCastAssign(CodeGen::CodeGenFunction &CGF, 15558626500527695865683d1d65053743de8770b60Fariborz Jahanian llvm::Value *src, llvm::Value *dest); 156598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian virtual LValue EmitObjCValueForIvar(CodeGen::CodeGenFunction &CGF, 157598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian QualType ObjectTy, 158598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian llvm::Value *BaseValue, 159598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian const ObjCIvarDecl *Ivar, 160598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian unsigned CVRQualifiers); 161f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian virtual llvm::Value *EmitIvarOffset(CodeGen::CodeGenFunction &CGF, 1622a03192a02dbf4fdff438d1e658356bde871aba4Daniel Dunbar const ObjCInterfaceDecl *Interface, 163f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian const ObjCIvarDecl *Ivar); 1640f984268b05edab2cc555a427c441baa9c252658Chris Lattner}; 1650f984268b05edab2cc555a427c441baa9c252658Chris Lattner} // end anonymous namespace 1660f984268b05edab2cc555a427c441baa9c252658Chris Lattner 16720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 16820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 16920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovstatic std::string SymbolNameForClass(const std::string &ClassName) { 170df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian return "___objc_class_name_" + ClassName; 17120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 17220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 17320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovstatic std::string SymbolNameForMethod(const std::string &ClassName, const 17420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::string &CategoryName, const std::string &MethodName, bool isClassMethod) 17520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov{ 17620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return "._objc_method_" + ClassName +"("+CategoryName+")"+ 17720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov (isClassMethod ? "+" : "-") + MethodName; 17820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 17920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 180dce1406f1c1f572cfd61c494546572d63461c741Chris LattnerCGObjCGNU::CGObjCGNU(CodeGen::CodeGenModule &cgm) 1815efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar : CGM(cgm), TheModule(CGM.getModule()), ClassPtrAlias(0), 1825efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar MetaClassPtrAlias(0) { 183e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner IntTy = cast<llvm::IntegerType>( 184e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner CGM.getTypes().ConvertType(CGM.getContext().IntTy)); 185e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner LongTy = cast<llvm::IntegerType>( 186e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner CGM.getTypes().ConvertType(CGM.getContext().LongTy)); 187dce1406f1c1f572cfd61c494546572d63461c741Chris Lattner 1883a5013cab1162118bd5bcf00a36c52e19a319f87Sebastian Redl Zeros[0] = llvm::ConstantInt::get(LongTy, 0); 18920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Zeros[1] = Zeros[0]; 19020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULLPtr = llvm::ConstantPointerNull::get( 19120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::PointerType::getUnqual(llvm::Type::Int8Ty)); 192391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner // C string type. Used in lots of places. 193391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner PtrToInt8Ty = 194391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner llvm::PointerType::getUnqual(llvm::Type::Int8Ty); 195391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner // Get the selector Type. 196e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner SelectorTy = cast<llvm::PointerType>( 197e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner CGM.getTypes().ConvertType(CGM.getContext().getObjCSelType())); 198e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner 199391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner PtrToIntTy = llvm::PointerType::getUnqual(IntTy); 200391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner PtrTy = PtrToInt8Ty; 201391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner 202391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner // Object type 203b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian IdTy = cast<llvm::PointerType>( 204b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CGM.getTypes().ConvertType(CGM.getContext().getObjCIdType())); 205391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner 206391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner // IMP type 207391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner std::vector<const llvm::Type*> IMPArgs; 208391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner IMPArgs.push_back(IdTy); 209391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner IMPArgs.push_back(SelectorTy); 210391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner IMPTy = llvm::FunctionType::get(IdTy, IMPArgs, true); 21120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 21220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// This has to perform the lookup every time, since posing and related 21320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// techniques can modify the name -> class mapping. 21445d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbarllvm::Value *CGObjCGNU::GetClass(CGBuilderTy &Builder, 215ddb2a3d55a24a1dbdf9152621642d9a4b4fc2f61Daniel Dunbar const ObjCInterfaceDecl *OID) { 216d9d22dd9c94618490dbffb0e2caf222530ca39d3Chris Lattner llvm::Value *ClassName = CGM.GetAddrOfConstantCString(OID->getNameAsString()); 217ddb2a3d55a24a1dbdf9152621642d9a4b4fc2f61Daniel Dunbar ClassName = Builder.CreateStructGEP(ClassName, 0); 218ddb2a3d55a24a1dbdf9152621642d9a4b4fc2f61Daniel Dunbar 21926c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian std::vector<const llvm::Type*> Params(1, PtrToInt8Ty); 22020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ClassLookupFn = 22126c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian CGM.CreateRuntimeFunction(llvm::FunctionType::get(IdTy, 22226c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian Params, 22326c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian true), 22426c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian "objc_lookup_class"); 22520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return Builder.CreateCall(ClassLookupFn, ClassName); 226391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner} 227391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner 22845d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbarllvm::Value *CGObjCGNU::GetSelector(CGBuilderTy &Builder, Selector Sel) { 229077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner llvm::GlobalAlias *&US = UntypedSelectors[Sel.getAsString()]; 2308e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner if (US == 0) 2318e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner US = new llvm::GlobalAlias(llvm::PointerType::getUnqual(SelectorTy), 2328e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner llvm::GlobalValue::InternalLinkage, 2338e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner ".objc_untyped_selector_alias", 2348e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner NULL, &TheModule); 2358e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner 2368e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner return Builder.CreateLoad(US); 237df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian} 238df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian 239df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanianllvm::Value *CGObjCGNU::GetSelector(CGBuilderTy &Builder, const ObjCMethodDecl 240df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian *Method) { 241df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian 242df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian std::string SelName = Method->getSelector().getAsString(); 243df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian std::string SelTypes; 244df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian CGM.getContext().getObjCEncodingForMethodDecl(Method, SelTypes); 245df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian // Typed selectors 246df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian TypedSelector Selector = TypedSelector(SelName, 247df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian SelTypes); 248df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian 249df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian // If it's already cached, return it. 250df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian if (TypedSelectors[Selector]) 251df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian { 252df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian return Builder.CreateLoad(TypedSelectors[Selector]); 253df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian } 254df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian 255df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian // If it isn't, cache it. 256df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian llvm::GlobalAlias *Sel = new llvm::GlobalAlias( 257df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian llvm::PointerType::getUnqual(SelectorTy), 258df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian llvm::GlobalValue::InternalLinkage, SelName, 259df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian NULL, &TheModule); 260df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian TypedSelectors[Selector] = Sel; 261df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian 262df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian return Builder.CreateLoad(Sel); 2638e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner} 2648e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner 2655e7dcc62e4637591959f9c372f6c5258d0d263e0Chris Lattnerllvm::Constant *CGObjCGNU::MakeConstantString(const std::string &Str, 2665e7dcc62e4637591959f9c372f6c5258d0d263e0Chris Lattner const std::string &Name) { 26720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant * ConstStr = llvm::ConstantArray::get(Str); 26820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ConstStr = new llvm::GlobalVariable(ConstStr->getType(), true, 26920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::GlobalValue::InternalLinkage, 27020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ConstStr, Name, &TheModule); 27120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return llvm::ConstantExpr::getGetElementPtr(ConstStr, Zeros, 2); 27220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 27320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::MakeGlobal(const llvm::StructType *Ty, 27420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> &V, const std::string &Name) { 27520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *C = llvm::ConstantStruct::get(Ty, V); 27620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return new llvm::GlobalVariable(Ty, false, 27720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::GlobalValue::InternalLinkage, C, Name, &TheModule); 27820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 27920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::MakeGlobal(const llvm::ArrayType *Ty, 28020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> &V, const std::string &Name) { 28120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *C = llvm::ConstantArray::get(Ty, V); 28220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return new llvm::GlobalVariable(Ty, false, 28320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::GlobalValue::InternalLinkage, C, Name, &TheModule); 28420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 28520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 28620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// Generate an NSConstantString object. 28720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov//TODO: In case there are any crazy people still using the GNU runtime without 28820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov//an OpenStep implementation, this should let them select their own class for 28920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov//constant strings. 29033fdb738a6c125f4c788733897021b7c1a062b0cSteve Naroffllvm::Constant *CGObjCGNU::GenerateConstantString(const ObjCStringLiteral *SL) { 29133fdb738a6c125f4c788733897021b7c1a062b0cSteve Naroff std::string Str(SL->getString()->getStrData(), 29233fdb738a6c125f4c788733897021b7c1a062b0cSteve Naroff SL->getString()->getByteLength()); 29320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Ivars; 29420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Ivars.push_back(NULLPtr); 29513fd7e5111032f54b538dd66d035b0ccc1f82467Chris Lattner Ivars.push_back(MakeConstantString(Str)); 296bbce49b9e5c6d7f05926b89f8e6fd235ae01c250Daniel Dunbar Ivars.push_back(llvm::ConstantInt::get(IntTy, Str.size())); 29720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ObjCStr = MakeGlobal( 29820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StructType::get(PtrToInt8Ty, PtrToInt8Ty, IntTy, NULL), 29920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Ivars, ".objc_str"); 30020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ConstantStrings.push_back( 30120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ConstantExpr::getBitCast(ObjCStr, PtrToInt8Ty)); 30220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return ObjCStr; 30320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 30420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 30520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov///Generates a message send where the super is the receiver. This is a message 30620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov///send to self with special delivery semantics indicating which class's method 30720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov///should be called. 3088f2926b73ed635afecd020da787af6a837601a2bDaniel DunbarCodeGen::RValue 3098f2926b73ed635afecd020da787af6a837601a2bDaniel DunbarCGObjCGNU::GenerateMessageSendSuper(CodeGen::CodeGenFunction &CGF, 3107f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar QualType ResultType, 3117f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar Selector Sel, 312f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar const ObjCInterfaceDecl *Class, 3137ce77920a35060f1c8dd72e541e42ce296ccd168Fariborz Jahanian bool isCategoryImpl, 314f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar llvm::Value *Receiver, 31519cd87eb5fb3c197e631ce08fd52c446c4d4e8f1Daniel Dunbar bool IsClassMessage, 31619cd87eb5fb3c197e631ce08fd52c446c4d4e8f1Daniel Dunbar const CallArgList &CallArgs) { 317b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian llvm::Value *cmd = GetSelector(CGF.Builder, Sel); 318b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 319b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CallArgList ActualArgs; 320b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 321b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian ActualArgs.push_back( 322b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian std::make_pair(RValue::get(CGF.Builder.CreateBitCast(Receiver, IdTy)), 323b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CGF.getContext().getObjCIdType())); 324b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian ActualArgs.push_back(std::make_pair(RValue::get(cmd), 325b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CGF.getContext().getObjCSelType())); 326b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian ActualArgs.insert(ActualArgs.end(), CallArgs.begin(), CallArgs.end()); 327b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 328b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CodeGenTypes &Types = CGM.getTypes(); 329b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian const CGFunctionInfo &FnInfo = Types.getFunctionInfo(ResultType, ActualArgs); 330b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian const llvm::FunctionType *impType = Types.GetFunctionType(FnInfo, false); 331b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 3325efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar llvm::Value *ReceiverClass = 0; 33348e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (isCategoryImpl) { 33448e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner llvm::Constant *classLookupFunction = 0; 33548e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner std::vector<const llvm::Type*> Params; 33648e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner Params.push_back(PtrTy); 33748e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (IsClassMessage) { 33848e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner classLookupFunction = CGM.CreateRuntimeFunction(llvm::FunctionType::get( 33948e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner IdTy, Params, true), "objc_get_meta_class"); 34048e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner } else { 34148e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner classLookupFunction = CGM.CreateRuntimeFunction(llvm::FunctionType::get( 34248e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner IdTy, Params, true), "objc_get_class"); 3435efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } 34448e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner ReceiverClass = CGF.Builder.CreateCall(classLookupFunction, 34548e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner MakeConstantString(Class->getNameAsString())); 3465efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } else { 34748e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner // Set up global aliases for the metaclass or class pointer if they do not 34848e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner // already exist. These will are forward-references which will be set to 34948e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner // pointers to the class and metaclass structure created for the runtime load 35048e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner // function. To send a message to super, we look up the value of the 35148e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner // super_class pointer from either the class or metaclass structure. 35248e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (IsClassMessage) { 35348e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (!MetaClassPtrAlias) { 35448e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner MetaClassPtrAlias = new llvm::GlobalAlias(IdTy, 35548e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner llvm::GlobalValue::InternalLinkage, ".objc_metaclass_ref" + 35648e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner Class->getNameAsString(), NULL, &TheModule); 35748e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner } 35848e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner ReceiverClass = MetaClassPtrAlias; 35948e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner } else { 36048e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (!ClassPtrAlias) { 36148e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner ClassPtrAlias = new llvm::GlobalAlias(IdTy, 36248e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner llvm::GlobalValue::InternalLinkage, ".objc_class_ref" + 36348e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner Class->getNameAsString(), NULL, &TheModule); 36448e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner } 36548e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner ReceiverClass = ClassPtrAlias; 3665efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } 36771238f67c5df13eef19450d66b7a7ab28377192aChris Lattner } 3685efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar // Cast the pointer to a simplified version of the class structure 3695efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar ReceiverClass = CGF.Builder.CreateBitCast(ReceiverClass, 3705efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar llvm::PointerType::getUnqual(llvm::StructType::get(IdTy, IdTy, NULL))); 3715efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar // Get the superclass pointer 3725efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar ReceiverClass = CGF.Builder.CreateStructGEP(ReceiverClass, 1); 3735efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar // Load the superclass pointer 3745efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar ReceiverClass = CGF.Builder.CreateLoad(ReceiverClass); 37520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Construct the structure used to look up the IMP 37620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StructType *ObjCSuperTy = llvm::StructType::get(Receiver->getType(), 37720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IdTy, NULL); 3788f2926b73ed635afecd020da787af6a837601a2bDaniel Dunbar llvm::Value *ObjCSuper = CGF.Builder.CreateAlloca(ObjCSuperTy); 379b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 3808f2926b73ed635afecd020da787af6a837601a2bDaniel Dunbar CGF.Builder.CreateStore(Receiver, CGF.Builder.CreateStructGEP(ObjCSuper, 0)); 3815efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar CGF.Builder.CreateStore(ReceiverClass, 3825efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar CGF.Builder.CreateStructGEP(ObjCSuper, 1)); 38320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 38420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Get the IMP 38526c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian std::vector<const llvm::Type*> Params; 38626c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian Params.push_back(llvm::PointerType::getUnqual(ObjCSuperTy)); 38726c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian Params.push_back(SelectorTy); 38820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *lookupFunction = 38926c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian CGM.CreateRuntimeFunction(llvm::FunctionType::get( 39026c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian llvm::PointerType::getUnqual(impType), Params, true), 39126c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian "objc_msg_lookup_super"); 39226c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian 39320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Value *lookupArgs[] = {ObjCSuper, cmd}; 3948f2926b73ed635afecd020da787af6a837601a2bDaniel Dunbar llvm::Value *imp = CGF.Builder.CreateCall(lookupFunction, lookupArgs, 39520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov lookupArgs+2); 39620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 397b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian return CGF.EmitCall(FnInfo, imp, ActualArgs); 39820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 39920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 40020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// Generate code for a message send expression. 4018f2926b73ed635afecd020da787af6a837601a2bDaniel DunbarCodeGen::RValue 4028f2926b73ed635afecd020da787af6a837601a2bDaniel DunbarCGObjCGNU::GenerateMessageSend(CodeGen::CodeGenFunction &CGF, 4037f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar QualType ResultType, 4047f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar Selector Sel, 405f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar llvm::Value *Receiver, 40619cd87eb5fb3c197e631ce08fd52c446c4d4e8f1Daniel Dunbar bool IsClassMessage, 407df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian const CallArgList &CallArgs, 408df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian const ObjCMethodDecl *Method) { 409df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian llvm::Value *cmd; 410df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian if (Method) 411df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian cmd = GetSelector(CGF.Builder, Method); 412df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian else 413df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian cmd = GetSelector(CGF.Builder, Sel); 414b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CallArgList ActualArgs; 415b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 416b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian ActualArgs.push_back( 417b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian std::make_pair(RValue::get(CGF.Builder.CreateBitCast(Receiver, IdTy)), 418b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CGF.getContext().getObjCIdType())); 419b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian ActualArgs.push_back(std::make_pair(RValue::get(cmd), 420b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CGF.getContext().getObjCSelType())); 421b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian ActualArgs.insert(ActualArgs.end(), CallArgs.begin(), CallArgs.end()); 422b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 423b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CodeGenTypes &Types = CGM.getTypes(); 424b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian const CGFunctionInfo &FnInfo = Types.getFunctionInfo(ResultType, ActualArgs); 425b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian const llvm::FunctionType *impType = Types.GetFunctionType(FnInfo, false); 4260f984268b05edab2cc555a427c441baa9c252658Chris Lattner 42726c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian std::vector<const llvm::Type*> Params; 42826c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian Params.push_back(Receiver->getType()); 42926c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian Params.push_back(SelectorTy); 4300f984268b05edab2cc555a427c441baa9c252658Chris Lattner llvm::Constant *lookupFunction = 43126c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian CGM.CreateRuntimeFunction(llvm::FunctionType::get( 43226c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian llvm::PointerType::getUnqual(impType), Params, true), 43326c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian "objc_msg_lookup"); 43426c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian 4358f2926b73ed635afecd020da787af6a837601a2bDaniel Dunbar llvm::Value *imp = CGF.Builder.CreateCall2(lookupFunction, Receiver, cmd); 4363eae03e7d165f20a863a9a4d7122ba2a691ab16dChris Lattner 437b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian return CGF.EmitCall(FnInfo, imp, ActualArgs); 43820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 43920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 44020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// Generates a MethodList. Used in construction of a objc_class and 44120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// objc_category structures. 44220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::GenerateMethodList(const std::string &ClassName, 443a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner const std::string &CategoryName, 444a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner const llvm::SmallVectorImpl<Selector> &MethodSels, 44520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &MethodTypes, 44620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov bool isClassMethodList) { 44720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Get the method structure type. 44820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StructType *ObjCMethodTy = llvm::StructType::get( 44920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // Really a selector, but the runtime creates it us. 45020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // Method types 45120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::PointerType::getUnqual(IMPTy), //Method pointer 45220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 45320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Methods; 45420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 45520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (unsigned int i = 0, e = MethodTypes.size(); i < e; ++i) { 45620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 4571e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian if (llvm::Constant *Method = 45820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov TheModule.getFunction(SymbolNameForMethod(ClassName, CategoryName, 459077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner MethodSels[i].getAsString(), 4601e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian isClassMethodList))) { 4611e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian llvm::Constant *C = 4621e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian CGM.GetAddrOfConstantCString(MethodSels[i].getAsString()); 4631e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian Elements.push_back(llvm::ConstantExpr::getGetElementPtr(C, Zeros, 2)); 4641e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian Elements.push_back( 4651e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian llvm::ConstantExpr::getGetElementPtr(MethodTypes[i], Zeros, 2)); 4661e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian Method = llvm::ConstantExpr::getBitCast(Method, 4671e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian llvm::PointerType::getUnqual(IMPTy)); 4681e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian Elements.push_back(Method); 4691e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian Methods.push_back(llvm::ConstantStruct::get(ObjCMethodTy, Elements)); 4701e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian } 47120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 47220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 47320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Array of method structures 47420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ArrayType *ObjCMethodArrayTy = llvm::ArrayType::get(ObjCMethodTy, 4751e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian Methods.size()); 47620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MethodArray = llvm::ConstantArray::get(ObjCMethodArrayTy, 477fba676396703e87a5034e5f308aa30a633468f66Chris Lattner Methods); 47820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 47920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Structure containing list pointer, array and array count 48020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::SmallVector<const llvm::Type*, 16> ObjCMethodListFields; 48120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::PATypeHolder OpaqueNextTy = llvm::OpaqueType::get(); 48220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Type *NextPtrTy = llvm::PointerType::getUnqual(OpaqueNextTy); 48320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StructType *ObjCMethodListTy = llvm::StructType::get(NextPtrTy, 48420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IntTy, 48520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ObjCMethodArrayTy, 48620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 48720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Refine next pointer type to concrete type 48820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::cast<llvm::OpaqueType>( 48920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov OpaqueNextTy.get())->refineAbstractTypeTo(ObjCMethodListTy); 49020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ObjCMethodListTy = llvm::cast<llvm::StructType>(OpaqueNextTy.get()); 49120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 49220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.clear(); 49320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.push_back(llvm::ConstantPointerNull::get( 49420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::PointerType::getUnqual(ObjCMethodListTy))); 49520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.push_back(llvm::ConstantInt::get(llvm::Type::Int32Ty, 49620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov MethodTypes.size())); 49720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.push_back(MethodArray); 49820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 49920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an instance of the structure 50020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ObjCMethodListTy, Methods, ".objc_method_list"); 50120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 50220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 50320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// Generates an IvarList. Used in construction of a objc_class. 50420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::GenerateIvarList( 50520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarNames, 50620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarTypes, 50720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &IvarOffsets) { 50820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Get the method structure type. 50920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StructType *ObjCIvarTy = llvm::StructType::get( 51020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 51120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 51220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IntTy, 51320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 51420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Ivars; 51520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 51620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (unsigned int i = 0, e = IvarNames.size() ; i < e ; i++) { 51720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 51820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back( llvm::ConstantExpr::getGetElementPtr(IvarNames[i], 51920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Zeros, 2)); 52020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back( llvm::ConstantExpr::getGetElementPtr(IvarTypes[i], 52120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Zeros, 2)); 52220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(IvarOffsets[i]); 52320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Ivars.push_back(llvm::ConstantStruct::get(ObjCIvarTy, Elements)); 52420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 52520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 52620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Array of method structures 52720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ArrayType *ObjCIvarArrayTy = llvm::ArrayType::get(ObjCIvarTy, 52820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IvarNames.size()); 52920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 53020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 53120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 532e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner Elements.push_back(llvm::ConstantInt::get(IntTy, (int)IvarNames.size())); 53320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(llvm::ConstantArray::get(ObjCIvarArrayTy, Ivars)); 53420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Structure containing array and array count 53520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StructType *ObjCIvarListTy = llvm::StructType::get(IntTy, 53620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ObjCIvarArrayTy, 53720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 53820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 53920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an instance of the structure 54020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ObjCIvarListTy, Elements, ".objc_ivar_list"); 5410f984268b05edab2cc555a427c441baa9c252658Chris Lattner} 5420f984268b05edab2cc555a427c441baa9c252658Chris Lattner 54320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// Generate a class structure 54420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::GenerateClassStructure( 54520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MetaClass, 54620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SuperClass, 54720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov unsigned info, 548d002cc6fc5b72bf00e3b7b4571ccf0f23c789b4bChris Lattner const char *Name, 54920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Version, 55020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *InstanceSize, 55120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *IVars, 55220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Methods, 55320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Protocols) { 55420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Set up the class structure 55520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Note: Several of these are char*s when they should be ids. This is 55620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // because the runtime performs this translation on load. 55720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StructType *ClassTy = llvm::StructType::get( 55820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // class_pointer 55920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // super_class 56020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // name 56120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov LongTy, // version 56220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov LongTy, // info 56320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov LongTy, // instance_size 56420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IVars->getType(), // ivars 56520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods->getType(), // methods 56620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // These are all filled in by the runtime, so we pretend 56720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // dtable 56820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // subclass_list 56920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // sibling_class 57020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // protocols 57120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // gc_object_type 57220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 57320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Zero = llvm::ConstantInt::get(LongTy, 0); 57420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *NullP = 575e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner llvm::ConstantPointerNull::get(PtrTy); 57620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Fill in the structure 57720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 57820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(llvm::ConstantExpr::getBitCast(MetaClass, PtrToInt8Ty)); 57920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(SuperClass); 580d002cc6fc5b72bf00e3b7b4571ccf0f23c789b4bChris Lattner Elements.push_back(MakeConstantString(Name, ".class_name")); 58120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(Zero); 58220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(llvm::ConstantInt::get(LongTy, info)); 58320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(InstanceSize); 58420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(IVars); 58520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(Methods); 58620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NullP); 58720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NullP); 58820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NullP); 58920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(llvm::ConstantExpr::getBitCast(Protocols, PtrTy)); 59020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NullP); 59120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an instance of the structure 5921565e0364b05d163640dd2b6feed43bae67df4fdChris Lattner return MakeGlobal(ClassTy, Elements, SymbolNameForClass(Name)); 59320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 59420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 59520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::GenerateProtocolMethodList( 59620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &MethodNames, 59720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<llvm::Constant *> &MethodTypes) { 59820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Get the method structure type. 59920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StructType *ObjCMethodDescTy = llvm::StructType::get( 60020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // Really a selector, but the runtime does the casting for us. 60120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 60220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 60320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Methods; 60420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 60520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (unsigned int i = 0, e = MethodTypes.size() ; i < e ; i++) { 60620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 60720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back( llvm::ConstantExpr::getGetElementPtr(MethodNames[i], 60820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Zeros, 2)); 60920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back( 61020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ConstantExpr::getGetElementPtr(MethodTypes[i], Zeros, 2)); 61120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.push_back(llvm::ConstantStruct::get(ObjCMethodDescTy, Elements)); 61220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 61320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ArrayType *ObjCMethodArrayTy = llvm::ArrayType::get(ObjCMethodDescTy, 61420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov MethodNames.size()); 61520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Array = llvm::ConstantArray::get(ObjCMethodArrayTy, Methods); 61620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StructType *ObjCMethodDescListTy = llvm::StructType::get( 61720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IntTy, ObjCMethodArrayTy, NULL); 61820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.clear(); 61920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.push_back(llvm::ConstantInt::get(IntTy, MethodNames.size())); 62020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.push_back(Array); 62120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ObjCMethodDescListTy, Methods, ".objc_method_list"); 62220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 62320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// Create the protocol list structure used in classes, categories and so on 62420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::GenerateProtocolList( 62520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov const llvm::SmallVectorImpl<std::string> &Protocols) { 62620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ArrayType *ProtocolArrayTy = llvm::ArrayType::get(PtrToInt8Ty, 62720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Protocols.size()); 62820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StructType *ProtocolListTy = llvm::StructType::get( 62920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, //Should be a recurisve pointer, but it's always NULL here. 63020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov LongTy,//FIXME: Should be size_t 63120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ProtocolArrayTy, 63220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 63320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 63420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (const std::string *iter = Protocols.begin(), *endIter = Protocols.end(); 63520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter != endIter ; iter++) { 636f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::Constant *protocol = ExistingProtocols[*iter]; 637f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian if (!protocol) 638f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian protocol = GenerateEmptyProtocol(*iter); 63920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Ptr = 640f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::ConstantExpr::getBitCast(protocol, PtrToInt8Ty); 64120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(Ptr); 64220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 64320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant * ProtocolArray = llvm::ConstantArray::get(ProtocolArrayTy, 64420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements); 64520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 64620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 647e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner Elements.push_back(llvm::ConstantInt::get(LongTy, Protocols.size())); 64820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ProtocolArray); 64920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ProtocolListTy, Elements, ".objc_protocol_list"); 65020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 65120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 65245d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbarllvm::Value *CGObjCGNU::GenerateProtocolRef(CGBuilderTy &Builder, 653af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar const ObjCProtocolDecl *PD) { 654f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::Value *protocol = ExistingProtocols[PD->getNameAsString()]; 655f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian const llvm::Type *T = 656f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian CGM.getTypes().ConvertType(CGM.getContext().getObjCProtoType()); 657f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian return Builder.CreateBitCast(protocol, llvm::PointerType::getUnqual(T)); 658f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian} 659f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian 660f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanianllvm::Constant *CGObjCGNU::GenerateEmptyProtocol( 661f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian const std::string &ProtocolName) { 662f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::SmallVector<std::string, 0> EmptyStringVector; 663f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::SmallVector<llvm::Constant*, 0> EmptyConstantVector; 664f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian 665f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::Constant *ProtocolList = GenerateProtocolList(EmptyStringVector); 666f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::Constant *InstanceMethodList = 667f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian GenerateProtocolMethodList(EmptyConstantVector, EmptyConstantVector); 668f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::Constant *ClassMethodList = 669f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian GenerateProtocolMethodList(EmptyConstantVector, EmptyConstantVector); 670f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian // Protocols are objects containing lists of the methods implemented and 671f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian // protocols adopted. 672f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::StructType *ProtocolTy = llvm::StructType::get(IdTy, 673f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian PtrToInt8Ty, 674f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian ProtocolList->getType(), 675f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian InstanceMethodList->getType(), 676f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian ClassMethodList->getType(), 677f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian NULL); 678f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian std::vector<llvm::Constant*> Elements; 679f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian // The isa pointer must be set to a magic number so the runtime knows it's 680f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian // the correct layout. 681f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian Elements.push_back(llvm::ConstantExpr::getIntToPtr( 682f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::ConstantInt::get(llvm::Type::Int32Ty, ProtocolVersion), IdTy)); 683f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian Elements.push_back(MakeConstantString(ProtocolName, ".objc_protocol_name")); 684f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian Elements.push_back(ProtocolList); 685f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian Elements.push_back(InstanceMethodList); 686f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian Elements.push_back(ClassMethodList); 687f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian return MakeGlobal(ProtocolTy, Elements, ".objc_protocol"); 68820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 68920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 690af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbarvoid CGObjCGNU::GenerateProtocol(const ObjCProtocolDecl *PD) { 691af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar ASTContext &Context = CGM.getContext(); 6928ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string ProtocolName = PD->getNameAsString(); 693af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar llvm::SmallVector<std::string, 16> Protocols; 694af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar for (ObjCProtocolDecl::protocol_iterator PI = PD->protocol_begin(), 695af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar E = PD->protocol_end(); PI != E; ++PI) 696d9d22dd9c94618490dbffb0e2caf222530ca39d3Chris Lattner Protocols.push_back((*PI)->getNameAsString()); 697af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> InstanceMethodNames; 698af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> InstanceMethodTypes; 6996ab3524f72a6e64aa04973fa9433b5559abb3525Douglas Gregor for (ObjCProtocolDecl::instmeth_iterator iter = PD->instmeth_begin(Context), 7006ab3524f72a6e64aa04973fa9433b5559abb3525Douglas Gregor E = PD->instmeth_end(Context); iter != E; iter++) { 701af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar std::string TypeStr; 702af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar Context.getObjCEncodingForMethodDecl(*iter, TypeStr); 703af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar InstanceMethodNames.push_back( 704077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner CGM.GetAddrOfConstantCString((*iter)->getSelector().getAsString())); 7056143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar InstanceMethodTypes.push_back(CGM.GetAddrOfConstantCString(TypeStr)); 706af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar } 707af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar // Collect information about class methods: 708af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> ClassMethodNames; 709af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> ClassMethodTypes; 7106ab3524f72a6e64aa04973fa9433b5559abb3525Douglas Gregor for (ObjCProtocolDecl::classmeth_iterator 7116ab3524f72a6e64aa04973fa9433b5559abb3525Douglas Gregor iter = PD->classmeth_begin(Context), 7126ab3524f72a6e64aa04973fa9433b5559abb3525Douglas Gregor endIter = PD->classmeth_end(Context) ; iter != endIter ; iter++) { 713af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar std::string TypeStr; 714af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar Context.getObjCEncodingForMethodDecl((*iter),TypeStr); 715af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar ClassMethodNames.push_back( 716077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner CGM.GetAddrOfConstantCString((*iter)->getSelector().getAsString())); 7176143293fa4366ee95d7e47e61bd030a34bf68b55Daniel Dunbar ClassMethodTypes.push_back(CGM.GetAddrOfConstantCString(TypeStr)); 718af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar } 71920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 72020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ProtocolList = GenerateProtocolList(Protocols); 72120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *InstanceMethodList = 72220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov GenerateProtocolMethodList(InstanceMethodNames, InstanceMethodTypes); 72320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ClassMethodList = 72420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov GenerateProtocolMethodList(ClassMethodNames, ClassMethodTypes); 72520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Protocols are objects containing lists of the methods implemented and 72620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // protocols adopted. 72720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StructType *ProtocolTy = llvm::StructType::get(IdTy, 72820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 72920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ProtocolList->getType(), 73020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov InstanceMethodList->getType(), 73120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ClassMethodList->getType(), 73220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 73320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 73420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // The isa pointer must be set to a magic number so the runtime knows it's 73520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // the correct layout. 73620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(llvm::ConstantExpr::getIntToPtr( 73720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ConstantInt::get(llvm::Type::Int32Ty, ProtocolVersion), IdTy)); 73820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(MakeConstantString(ProtocolName, ".objc_protocol_name")); 73920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ProtocolList); 74020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(InstanceMethodList); 74120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ClassMethodList); 74220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ExistingProtocols[ProtocolName] = 74320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ConstantExpr::getBitCast(MakeGlobal(ProtocolTy, Elements, 74420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ".objc_protocol"), IdTy); 74520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 74620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 7477ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbarvoid CGObjCGNU::GenerateCategory(const ObjCCategoryImplDecl *OCD) { 7488ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string ClassName = OCD->getClassInterface()->getNameAsString(); 7498ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string CategoryName = OCD->getNameAsString(); 7507ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about instance methods 7517ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<Selector, 16> InstanceMethodSels; 7527ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> InstanceMethodTypes; 753653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor for (ObjCCategoryImplDecl::instmeth_iterator 754653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter = OCD->instmeth_begin(CGM.getContext()), 755653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor endIter = OCD->instmeth_end(CGM.getContext()); 756653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter != endIter ; iter++) { 7577ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar InstanceMethodSels.push_back((*iter)->getSelector()); 7587ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 7597ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar CGM.getContext().getObjCEncodingForMethodDecl(*iter,TypeStr); 7607ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar InstanceMethodTypes.push_back(CGM.GetAddrOfConstantCString(TypeStr)); 7617ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 7627ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 7637ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about class methods 7647ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<Selector, 16> ClassMethodSels; 7657ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> ClassMethodTypes; 766653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor for (ObjCCategoryImplDecl::classmeth_iterator 767653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter = OCD->classmeth_begin(CGM.getContext()), 768653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor endIter = OCD->classmeth_end(CGM.getContext()); 769653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter != endIter ; iter++) { 7707ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar ClassMethodSels.push_back((*iter)->getSelector()); 7717ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 7727ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar CGM.getContext().getObjCEncodingForMethodDecl(*iter,TypeStr); 7737ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar ClassMethodTypes.push_back(CGM.GetAddrOfConstantCString(TypeStr)); 7747ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 7757ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 7767ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect the names of referenced protocols 7777ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<std::string, 16> Protocols; 7787ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar const ObjCInterfaceDecl *ClassDecl = OCD->getClassInterface(); 7797ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar const ObjCList<ObjCProtocolDecl> &Protos =ClassDecl->getReferencedProtocols(); 7807ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar for (ObjCList<ObjCProtocolDecl>::iterator I = Protos.begin(), 7817ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar E = Protos.end(); I != E; ++I) 782d9d22dd9c94618490dbffb0e2caf222530ca39d3Chris Lattner Protocols.push_back((*I)->getNameAsString()); 7837ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 78420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 78520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(MakeConstantString(CategoryName)); 78620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(MakeConstantString(ClassName)); 78720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Instance method list 78820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(llvm::ConstantExpr::getBitCast(GenerateMethodList( 789a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner ClassName, CategoryName, InstanceMethodSels, InstanceMethodTypes, 79020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov false), PtrTy)); 79120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Class method list 79220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(llvm::ConstantExpr::getBitCast(GenerateMethodList( 793a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner ClassName, CategoryName, ClassMethodSels, ClassMethodTypes, true), 79420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy)); 79520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Protocol list 79620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(llvm::ConstantExpr::getBitCast( 79720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov GenerateProtocolList(Protocols), PtrTy)); 79820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Categories.push_back(llvm::ConstantExpr::getBitCast( 79920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov MakeGlobal(llvm::StructType::get(PtrToInt8Ty, PtrToInt8Ty, PtrTy, 80020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, PtrTy, NULL), Elements), PtrTy)); 80120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 8027ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 8037ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbarvoid CGObjCGNU::GenerateClass(const ObjCImplementationDecl *OID) { 8047ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar ASTContext &Context = CGM.getContext(); 8057ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 8067ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Get the superclass name. 8077ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar const ObjCInterfaceDecl * SuperClassDecl = 8087ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar OID->getClassInterface()->getSuperClass(); 8098ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string SuperClassName; 8108ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner if (SuperClassDecl) 8118ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner SuperClassName = SuperClassDecl->getNameAsString(); 8127ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 8137ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Get the class name 81409dc6660487fc2f4a4bb2032e30123d3e0da7230Chris Lattner ObjCInterfaceDecl *ClassDecl = 81509dc6660487fc2f4a4bb2032e30123d3e0da7230Chris Lattner const_cast<ObjCInterfaceDecl *>(OID->getClassInterface()); 8168ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string ClassName = ClassDecl->getNameAsString(); 8177ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 8182bebbf0acee55404de4b8846713b64429e744e8fDaniel Dunbar // Get the size of instances. 8192bebbf0acee55404de4b8846713b64429e744e8fDaniel Dunbar int instanceSize = Context.getASTObjCImplementationLayout(OID).getSize() / 8; 8207ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 8217ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about instance variables. 8227ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> IvarNames; 8237ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> IvarTypes; 8247ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> IvarOffsets; 8257ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar for (ObjCInterfaceDecl::ivar_iterator iter = ClassDecl->ivar_begin(), 8267ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar endIter = ClassDecl->ivar_end() ; iter != endIter ; iter++) { 8277ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Store the name 828d9d22dd9c94618490dbffb0e2caf222530ca39d3Chris Lattner IvarNames.push_back(CGM.GetAddrOfConstantCString((*iter) 829d9d22dd9c94618490dbffb0e2caf222530ca39d3Chris Lattner ->getNameAsString())); 8307ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Get the type encoding for this ivar 8317ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 8320d504c1da852e58ff802545c823ecff3b6c654b8Daniel Dunbar Context.getObjCEncodingForType((*iter)->getType(), TypeStr); 8337ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar IvarTypes.push_back(CGM.GetAddrOfConstantCString(TypeStr)); 8347ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Get the offset 835c8cbf1944863160f5f6f82967270b68bfb41361fDaniel Dunbar uint64_t Offset = ComputeIvarBaseOffset(CGM, ClassDecl, *iter); 8367ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar IvarOffsets.push_back( 837c8cbf1944863160f5f6f82967270b68bfb41361fDaniel Dunbar llvm::ConstantInt::get(llvm::Type::Int32Ty, Offset)); 8387ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 8397ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 8407ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about instance methods 8417ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<Selector, 16> InstanceMethodSels; 8427ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> InstanceMethodTypes; 843653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor for (ObjCImplementationDecl::instmeth_iterator 844653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter = OID->instmeth_begin(CGM.getContext()), 845653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor endIter = OID->instmeth_end(CGM.getContext()); 846653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter != endIter ; iter++) { 8477ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar InstanceMethodSels.push_back((*iter)->getSelector()); 8487ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 8497ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar Context.getObjCEncodingForMethodDecl((*iter),TypeStr); 8507ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar InstanceMethodTypes.push_back(CGM.GetAddrOfConstantCString(TypeStr)); 8517ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 8521e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian for (ObjCImplDecl::propimpl_iterator 8531e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian iter = OID->propimpl_begin(CGM.getContext()), 8541e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian endIter = OID->propimpl_end(CGM.getContext()); 8551e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian iter != endIter ; iter++) { 8561e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian ObjCPropertyDecl *property = (*iter)->getPropertyDecl(); 8571e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian if (ObjCMethodDecl *getter = property->getGetterMethodDecl()) { 8581e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian InstanceMethodSels.push_back(getter->getSelector()); 8591e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian std::string TypeStr; 8601e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian Context.getObjCEncodingForMethodDecl(getter,TypeStr); 8611e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian InstanceMethodTypes.push_back(CGM.GetAddrOfConstantCString(TypeStr)); 8621e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian } 8631e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian if (ObjCMethodDecl *setter = property->getSetterMethodDecl()) { 8641e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian InstanceMethodSels.push_back(setter->getSelector()); 8651e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian std::string TypeStr; 8661e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian Context.getObjCEncodingForMethodDecl(setter,TypeStr); 8671e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian InstanceMethodTypes.push_back(CGM.GetAddrOfConstantCString(TypeStr)); 8681e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian } 8691e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian } 8707ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 8717ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about class methods 8727ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<Selector, 16> ClassMethodSels; 8737ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<llvm::Constant*, 16> ClassMethodTypes; 874653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor for (ObjCImplementationDecl::classmeth_iterator 875653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter = OID->classmeth_begin(CGM.getContext()), 876653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor endIter = OID->classmeth_end(CGM.getContext()); 877653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter != endIter ; iter++) { 8787ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar ClassMethodSels.push_back((*iter)->getSelector()); 8797ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 8807ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar Context.getObjCEncodingForMethodDecl((*iter),TypeStr); 8817ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar ClassMethodTypes.push_back(CGM.GetAddrOfConstantCString(TypeStr)); 8827ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 8837ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect the names of referenced protocols 8847ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar llvm::SmallVector<std::string, 16> Protocols; 8857ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar const ObjCList<ObjCProtocolDecl> &Protos =ClassDecl->getReferencedProtocols(); 8867ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar for (ObjCList<ObjCProtocolDecl>::iterator I = Protos.begin(), 8877ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar E = Protos.end(); I != E; ++I) 888d9d22dd9c94618490dbffb0e2caf222530ca39d3Chris Lattner Protocols.push_back((*I)->getNameAsString()); 8897ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 8907ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 8917ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 89220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Get the superclass pointer. 89320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SuperClass; 8948ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner if (!SuperClassName.empty()) { 89520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov SuperClass = MakeConstantString(SuperClassName, ".super_class_name"); 89620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } else { 897e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner SuperClass = llvm::ConstantPointerNull::get(PtrToInt8Ty); 89820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 89920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Empty vector used to construct empty method lists 90020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::SmallVector<llvm::Constant*, 1> empty; 90120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Generate the method and instance variable lists 90220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MethodList = GenerateMethodList(ClassName, "", 903a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner InstanceMethodSels, InstanceMethodTypes, false); 90420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ClassMethodList = GenerateMethodList(ClassName, "", 905a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner ClassMethodSels, ClassMethodTypes, true); 90620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *IvarList = GenerateIvarList(IvarNames, IvarTypes, 90720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IvarOffsets); 90820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov //Generate metaclass for class methods 90920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MetaClassStruct = GenerateClassStructure(NULLPtr, 9101565e0364b05d163640dd2b6feed43bae67df4fdChris Lattner NULLPtr, 0x2L, /*name*/"", 0, Zeros[0], GenerateIvarList( 91120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov empty, empty, empty), ClassMethodList, NULLPtr); 9125efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar 91320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Generate the class structure 9148ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner llvm::Constant *ClassStruct = 9158ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner GenerateClassStructure(MetaClassStruct, SuperClass, 0x1L, 9168ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner ClassName.c_str(), 0, 9173a5013cab1162118bd5bcf00a36c52e19a319f87Sebastian Redl llvm::ConstantInt::get(LongTy, instanceSize), IvarList, 91820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov MethodList, GenerateProtocolList(Protocols)); 9195efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar 9205efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar // Resolve the class aliases, if they exist. 9215efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar if (ClassPtrAlias) { 9225efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar ClassPtrAlias->setAliasee( 9235efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar llvm::ConstantExpr::getBitCast(ClassStruct, IdTy)); 9245efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar ClassPtrAlias = 0; 9255efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } 9265efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar if (MetaClassPtrAlias) { 9275efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar MetaClassPtrAlias->setAliasee( 9285efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar llvm::ConstantExpr::getBitCast(MetaClassStruct, IdTy)); 9295efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar MetaClassPtrAlias = 0; 9305efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } 9315efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar 93220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Add class structure to list to be added to the symtab later 93320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ClassStruct = llvm::ConstantExpr::getBitCast(ClassStruct, PtrToInt8Ty); 93420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.push_back(ClassStruct); 93520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 93620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 93720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Function *CGObjCGNU::ModuleInitFunction() { 93820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Only emit an ObjC load function if no Objective-C stuff has been called 93920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov if (Classes.empty() && Categories.empty() && ConstantStrings.empty() && 94020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ExistingProtocols.empty() && TypedSelectors.empty() && 9415f58b911304f7d114f929d1726a09cd1c828a5ddAnton Korobeynikov UntypedSelectors.empty()) 94220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return NULL; 9431b8956e1ce4c5770982d6e59edb16979b500677aEli Friedman 944e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::StructType *SelStructTy = dyn_cast<llvm::StructType>( 945e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner SelectorTy->getElementType()); 946e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner const llvm::Type *SelStructPtrTy = SelectorTy; 947e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner bool isSelOpaque = false; 948e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner if (SelStructTy == 0) { 949e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner SelStructTy = llvm::StructType::get(PtrToInt8Ty, PtrToInt8Ty, NULL); 950e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner SelStructPtrTy = llvm::PointerType::getUnqual(SelStructTy); 951e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner isSelOpaque = true; 952e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner } 953e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner 9541b8956e1ce4c5770982d6e59edb16979b500677aEli Friedman // Name the ObjC types to make the IR a bit easier to read 955e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner TheModule.addTypeName(".objc_selector", SelStructPtrTy); 9561b8956e1ce4c5770982d6e59edb16979b500677aEli Friedman TheModule.addTypeName(".objc_id", IdTy); 9571b8956e1ce4c5770982d6e59edb16979b500677aEli Friedman TheModule.addTypeName(".objc_imp", IMPTy); 9581b8956e1ce4c5770982d6e59edb16979b500677aEli Friedman 95920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 96071238f67c5df13eef19450d66b7a7ab28377192aChris Lattner llvm::Constant *Statics = NULLPtr; 96120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Generate statics list: 96271238f67c5df13eef19450d66b7a7ab28377192aChris Lattner if (ConstantStrings.size()) { 96371238f67c5df13eef19450d66b7a7ab28377192aChris Lattner llvm::ArrayType *StaticsArrayTy = llvm::ArrayType::get(PtrToInt8Ty, 96471238f67c5df13eef19450d66b7a7ab28377192aChris Lattner ConstantStrings.size() + 1); 96571238f67c5df13eef19450d66b7a7ab28377192aChris Lattner ConstantStrings.push_back(NULLPtr); 96671238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Elements.push_back(MakeConstantString("NSConstantString", 96771238f67c5df13eef19450d66b7a7ab28377192aChris Lattner ".objc_static_class_name")); 96871238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Elements.push_back(llvm::ConstantArray::get(StaticsArrayTy, 96971238f67c5df13eef19450d66b7a7ab28377192aChris Lattner ConstantStrings)); 97071238f67c5df13eef19450d66b7a7ab28377192aChris Lattner llvm::StructType *StaticsListTy = 97171238f67c5df13eef19450d66b7a7ab28377192aChris Lattner llvm::StructType::get(PtrToInt8Ty, StaticsArrayTy, NULL); 97271238f67c5df13eef19450d66b7a7ab28377192aChris Lattner llvm::Type *StaticsListPtrTy = llvm::PointerType::getUnqual(StaticsListTy); 97371238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Statics = MakeGlobal(StaticsListTy, Elements, ".objc_statics"); 97471238f67c5df13eef19450d66b7a7ab28377192aChris Lattner llvm::ArrayType *StaticsListArrayTy = 97571238f67c5df13eef19450d66b7a7ab28377192aChris Lattner llvm::ArrayType::get(StaticsListPtrTy, 2); 97671238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Elements.clear(); 97771238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Elements.push_back(Statics); 97871238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Elements.push_back(llvm::Constant::getNullValue(StaticsListPtrTy)); 97971238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Statics = MakeGlobal(StaticsListArrayTy, Elements, ".objc_statics_ptr"); 98071238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Statics = llvm::ConstantExpr::getBitCast(Statics, PtrTy); 98171238f67c5df13eef19450d66b7a7ab28377192aChris Lattner } 98220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Array of classes, categories, and constant objects 98320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ArrayType *ClassListTy = llvm::ArrayType::get(PtrToInt8Ty, 98420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.size() + Categories.size() + 2); 985e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner llvm::StructType *SymTabTy = llvm::StructType::get(LongTy, SelStructPtrTy, 986630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner llvm::Type::Int16Ty, 987630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner llvm::Type::Int16Ty, 988630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner ClassListTy, NULL); 98920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 99020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 99120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Pointer to an array of selectors used in this module. 99220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Selectors; 99320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (std::map<TypedSelector, llvm::GlobalAlias*>::iterator 99420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter = TypedSelectors.begin(), iterEnd = TypedSelectors.end(); 99520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter != iterEnd ; ++iter) { 996630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner Elements.push_back(MakeConstantString(iter->first.first, ".objc_sel_name")); 997630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner Elements.push_back(MakeConstantString(iter->first.second, 998630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner ".objc_sel_types")); 99920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Selectors.push_back(llvm::ConstantStruct::get(SelStructTy, Elements)); 100020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 100120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 100220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (llvm::StringMap<llvm::GlobalAlias*>::iterator 100320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter = UntypedSelectors.begin(), iterEnd = UntypedSelectors.end(); 1004630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner iter != iterEnd; ++iter) { 100520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back( 1006630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner MakeConstantString(iter->getKeyData(), ".objc_sel_name")); 100720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 100820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Selectors.push_back(llvm::ConstantStruct::get(SelStructTy, Elements)); 100920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 101020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 101120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 101220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 101320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Selectors.push_back(llvm::ConstantStruct::get(SelStructTy, Elements)); 101420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 101520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Number of static selectors 101620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(llvm::ConstantInt::get(LongTy, Selectors.size() )); 101720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SelectorList = MakeGlobal( 101820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ArrayType::get(SelStructTy, Selectors.size()), Selectors, 101920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ".objc_selector_list"); 1020e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner Elements.push_back(llvm::ConstantExpr::getBitCast(SelectorList, 1021e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner SelStructPtrTy)); 102220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 102320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Now that all of the static selectors exist, create pointers to them. 102420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov int index = 0; 102520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (std::map<TypedSelector, llvm::GlobalAlias*>::iterator 102620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter=TypedSelectors.begin(), iterEnd =TypedSelectors.end(); 102720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter != iterEnd; ++iter) { 102820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Idxs[] = {Zeros[0], 102920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ConstantInt::get(llvm::Type::Int32Ty, index++), Zeros[0]}; 1030e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner llvm::Constant *SelPtr = new llvm::GlobalVariable(SelStructPtrTy, 1031e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner true, llvm::GlobalValue::InternalLinkage, 103220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ConstantExpr::getGetElementPtr(SelectorList, Idxs, 2), 103320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ".objc_sel_ptr", &TheModule); 1034e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner // If selectors are defined as an opaque type, cast the pointer to this 1035e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner // type. 1036e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner if (isSelOpaque) { 1037e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner SelPtr = llvm::ConstantExpr::getBitCast(SelPtr, 1038e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner llvm::PointerType::getUnqual(SelectorTy)); 1039e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner } 104020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov (*iter).second->setAliasee(SelPtr); 104120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 104220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (llvm::StringMap<llvm::GlobalAlias*>::iterator 104320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter=UntypedSelectors.begin(), iterEnd = UntypedSelectors.end(); 104420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter != iterEnd; iter++) { 104520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Idxs[] = {Zeros[0], 104620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ConstantInt::get(llvm::Type::Int32Ty, index++), Zeros[0]}; 1047e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner llvm::Constant *SelPtr = new llvm::GlobalVariable(SelStructPtrTy, true, 104820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::GlobalValue::InternalLinkage, 104920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::ConstantExpr::getGetElementPtr(SelectorList, Idxs, 2), 105020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ".objc_sel_ptr", &TheModule); 1051e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner // If selectors are defined as an opaque type, cast the pointer to this 1052e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner // type. 1053e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner if (isSelOpaque) { 1054e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner SelPtr = llvm::ConstantExpr::getBitCast(SelPtr, 1055e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner llvm::PointerType::getUnqual(SelectorTy)); 1056e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner } 105720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov (*iter).second->setAliasee(SelPtr); 105820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 105920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Number of classes defined. 106020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(llvm::ConstantInt::get(llvm::Type::Int16Ty, 106120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.size())); 106220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Number of categories defined 106320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(llvm::ConstantInt::get(llvm::Type::Int16Ty, 106420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Categories.size())); 106520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an array of classes, then categories, then static object instances 106620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.insert(Classes.end(), Categories.begin(), Categories.end()); 106720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // NULL-terminated list of static object instances (mainly constant strings) 106820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.push_back(Statics); 106920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.push_back(NULLPtr); 107020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ClassList = llvm::ConstantArray::get(ClassListTy, Classes); 107120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ClassList); 107220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Construct the symbol table 107320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SymTab= MakeGlobal(SymTabTy, Elements); 107420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 107520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // The symbol table is contained in a module which has some version-checking 107620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // constants 107720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StructType * ModuleTy = llvm::StructType::get(LongTy, LongTy, 107820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, llvm::PointerType::getUnqual(SymTabTy), NULL); 107920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 108020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Runtime version used for compatibility checking. 108120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(llvm::ConstantInt::get(LongTy, RuntimeVersion)); 108291a0b51438e5259a79d68d7450c453827beed9e2Fariborz Jahanian // sizeof(ModuleTy) 108391a0b51438e5259a79d68d7450c453827beed9e2Fariborz Jahanian llvm::TargetData td = llvm::TargetData::TargetData(&TheModule); 108491a0b51438e5259a79d68d7450c453827beed9e2Fariborz Jahanian Elements.push_back(llvm::ConstantInt::get(LongTy, td.getTypeSizeInBits(ModuleTy)/8)); 108520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov //FIXME: Should be the path to the file where this module was declared 108620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 108720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(SymTab); 108820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Value *Module = MakeGlobal(ModuleTy, Elements); 108920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 109020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create the load function calling the runtime entry point with the module 109120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // structure 109220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<const llvm::Type*> VoidArgs; 109320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Function * LoadFunction = llvm::Function::Create( 109420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::FunctionType::get(llvm::Type::VoidTy, VoidArgs, false), 109520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::GlobalValue::InternalLinkage, ".objc_load_function", 109620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov &TheModule); 109720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::BasicBlock *EntryBB = llvm::BasicBlock::Create("entry", LoadFunction); 109845d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbar CGBuilderTy Builder; 109920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Builder.SetInsertPoint(EntryBB); 110026c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian 110126c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian std::vector<const llvm::Type*> Params(1, 110226c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian llvm::PointerType::getUnqual(ModuleTy)); 110326c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian llvm::Value *Register = CGM.CreateRuntimeFunction(llvm::FunctionType::get( 110426c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian llvm::Type::VoidTy, Params, true), "__objc_exec_class"); 110520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Builder.CreateCall(Register, Module); 110620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Builder.CreateRetVoid(); 110720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return LoadFunction; 110820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 11097ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 1110679a502d462ef819e6175b58e255ca3f3391e7cfFariborz Jahanianllvm::Function *CGObjCGNU::GenerateMethod(const ObjCMethodDecl *OMD, 1111679a502d462ef819e6175b58e255ca3f3391e7cfFariborz Jahanian const ObjCContainerDecl *CD) { 11127ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar const ObjCCategoryImplDecl *OCD = 11133e0a540b6d846178857289ec0eb8470a278d11a3Steve Naroff dyn_cast<ObjCCategoryImplDecl>(OMD->getDeclContext()); 1114077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner std::string CategoryName = OCD ? OCD->getNameAsString() : ""; 1115077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner std::string ClassName = OMD->getClassInterface()->getNameAsString(); 1116077bf5e2f48acfa9e7d69429b6e4ba86ea14896dChris Lattner std::string MethodName = OMD->getSelector().getAsString(); 1117f8d49f64ef6ab7e632717a31631fc289aab69428Douglas Gregor bool isClassMethod = !OMD->isInstanceMethod(); 1118391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner 1119541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel Dunbar CodeGenTypes &Types = CGM.getTypes(); 112045c25ba11cbf8c9a461def5b03f6ee9481e06769Daniel Dunbar const llvm::FunctionType *MethodTy = 1121541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel Dunbar Types.GetFunctionType(Types.getFunctionInfo(OMD), OMD->isVariadic()); 112220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::string FunctionName = SymbolNameForMethod(ClassName, CategoryName, 112320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov MethodName, isClassMethod); 112420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 1125984d0b414bc76d3530b9bc55a5a55834ba76c607Gabor Greif llvm::Function *Method = llvm::Function::Create(MethodTy, 1126391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner llvm::GlobalValue::InternalLinkage, 112720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov FunctionName, 1128391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner &TheModule); 1129391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner return Method; 1130391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner} 1131391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner 113249f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbarllvm::Function *CGObjCGNU::GetPropertyGetFunction() { 113349f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar return 0; 113449f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar} 113549f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar 113649f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbarllvm::Function *CGObjCGNU::GetPropertySetFunction() { 113749f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar return 0; 113849f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar} 113949f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar 114049f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbarllvm::Function *CGObjCGNU::EnumerationMutationFunction() { 114126c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian std::vector<const llvm::Type*> Params(1, IdTy); 114226c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian return cast<llvm::Function>(CGM.CreateRuntimeFunction( 114326c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian llvm::FunctionType::get(llvm::Type::VoidTy, Params, true), 114426c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian "objc_enumerationMutation")); 11452abd89c039e835e84519a4cd8a7495899a70153dAnders Carlsson} 11462abd89c039e835e84519a4cd8a7495899a70153dAnders Carlsson 1147bd71be4683c195260d5245118b1e13e6b2e20504Fariborz Jahanianvoid CGObjCGNU::EmitTryOrSynchronizedStmt(CodeGen::CodeGenFunction &CGF, 1148bd71be4683c195260d5245118b1e13e6b2e20504Fariborz Jahanian const Stmt &S) { 11495dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Pointer to the personality function 11505dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Constant *Personality = 11515dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGM.CreateRuntimeFunction(llvm::FunctionType::get(llvm::Type::Int32Ty, 11525dc0867af17b3bd6f567897433853b2b4767446cChris Lattner std::vector<const llvm::Type*>(), true), 11535dc0867af17b3bd6f567897433853b2b4767446cChris Lattner "__gnu_objc_personality_v0"); 11545dc0867af17b3bd6f567897433853b2b4767446cChris Lattner Personality = llvm::ConstantExpr::getBitCast(Personality, PtrTy); 11555dc0867af17b3bd6f567897433853b2b4767446cChris Lattner std::vector<const llvm::Type*> Params; 11565dc0867af17b3bd6f567897433853b2b4767446cChris Lattner Params.push_back(PtrTy); 11575dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Value *RethrowFn = 11585dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGM.CreateRuntimeFunction(llvm::FunctionType::get(llvm::Type::VoidTy, 11595dc0867af17b3bd6f567897433853b2b4767446cChris Lattner Params, false), "_Unwind_Resume_or_Rethrow"); 11605dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 11615dc0867af17b3bd6f567897433853b2b4767446cChris Lattner bool isTry = isa<ObjCAtTryStmt>(S); 11625dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *TryBlock = CGF.createBasicBlock("try"); 11635dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *PrevLandingPad = CGF.getInvokeDest(); 11645dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *TryHandler = CGF.createBasicBlock("try.handler"); 1165d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner llvm::BasicBlock *CatchInCatch = CGF.createBasicBlock("catch.rethrow"); 11665dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *FinallyBlock = CGF.createBasicBlock("finally"); 11675dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *FinallyRethrow = CGF.createBasicBlock("finally.throw"); 11685dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *FinallyEnd = CGF.createBasicBlock("finally.end"); 11695dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 11705dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // GNU runtime does not currently support @synchronized() 11715dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (!isTry) { 1172d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner std::vector<const llvm::Type*> Args(1, IdTy); 1173d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner llvm::FunctionType *FTy = 1174d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner llvm::FunctionType::get(llvm::Type::VoidTy, Args, false); 1175d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner llvm::Value *SyncEnter = CGM.CreateRuntimeFunction(FTy, "objc_sync_enter"); 1176d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner llvm::Value *SyncArg = 1177d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.EmitScalarExpr(cast<ObjCAtSynchronizedStmt>(S).getSynchExpr()); 1178d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner SyncArg = CGF.Builder.CreateBitCast(SyncArg, IdTy); 1179d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.Builder.CreateCall(SyncEnter, SyncArg); 11805dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 11815dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 1182d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner 11835dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Push an EH context entry, used for handling rethrows and jumps 11845dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // through finally. 11855dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.PushCleanupBlock(FinallyBlock); 11865dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 11875dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Emit the statements in the @try {} block 11885dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.setInvokeDest(TryHandler); 11895dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 11905dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(TryBlock); 11915dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitStmt(isTry ? cast<ObjCAtTryStmt>(S).getTryBody() 11925dc0867af17b3bd6f567897433853b2b4767446cChris Lattner : cast<ObjCAtSynchronizedStmt>(S).getSynchBody()); 11935dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 11945dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Jump to @finally if there is no exception 11955dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBranchThroughCleanup(FinallyEnd); 11965dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 11975dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Emit the handlers 11985dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(TryHandler); 11995dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 1200bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner // Get the correct versions of the exception handling intrinsics 1201bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner llvm::TargetData td = llvm::TargetData::TargetData(&TheModule); 1202bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner int PointerWidth = td.getTypeSizeInBits(PtrTy); 1203bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner assert((PointerWidth == 32 || PointerWidth == 64) && 1204bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner "Can't yet handle exceptions if pointers are not 32 or 64 bits"); 12055dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Value *llvm_eh_exception = 12065dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.CGM.getIntrinsic(llvm::Intrinsic::eh_exception); 1207bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner llvm::Value *llvm_eh_selector = PointerWidth == 32 ? 1208bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner CGF.CGM.getIntrinsic(llvm::Intrinsic::eh_selector_i32) : 1209bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner CGF.CGM.getIntrinsic(llvm::Intrinsic::eh_selector_i64); 1210bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner llvm::Value *llvm_eh_typeid_for = PointerWidth == 32 ? 1211bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner CGF.CGM.getIntrinsic(llvm::Intrinsic::eh_typeid_for_i32) : 1212bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner CGF.CGM.getIntrinsic(llvm::Intrinsic::eh_typeid_for_i64); 12135dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 12145dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Exception object 12155dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Value *Exc = CGF.Builder.CreateCall(llvm_eh_exception, "exc"); 12165dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Value *RethrowPtr = CGF.CreateTempAlloca(Exc->getType(), "_rethrow"); 12175dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 12185dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::SmallVector<llvm::Value*, 8> ESelArgs; 12195dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::SmallVector<std::pair<const ParmVarDecl*, const Stmt*>, 8> Handlers; 12205dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 12215dc0867af17b3bd6f567897433853b2b4767446cChris Lattner ESelArgs.push_back(Exc); 12225dc0867af17b3bd6f567897433853b2b4767446cChris Lattner ESelArgs.push_back(Personality); 12235dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 12245dc0867af17b3bd6f567897433853b2b4767446cChris Lattner bool HasCatchAll = false; 12255dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Only @try blocks are allowed @catch blocks, but both can have @finally 12265dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (isTry) { 12275dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (const ObjCAtCatchStmt* CatchStmt = 12285dc0867af17b3bd6f567897433853b2b4767446cChris Lattner cast<ObjCAtTryStmt>(S).getCatchStmts()) { 1229d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.setInvokeDest(CatchInCatch); 12305dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 12315dc0867af17b3bd6f567897433853b2b4767446cChris Lattner for (; CatchStmt; CatchStmt = CatchStmt->getNextCatchStmt()) { 12325dc0867af17b3bd6f567897433853b2b4767446cChris Lattner const ParmVarDecl *CatchDecl = CatchStmt->getCatchParamDecl(); 12335dc0867af17b3bd6f567897433853b2b4767446cChris Lattner Handlers.push_back(std::make_pair(CatchDecl, CatchStmt->getCatchBody())); 12345dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 12355dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // @catch() and @catch(id) both catch any ObjC exception 12365dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (!CatchDecl || CGF.getContext().isObjCIdType(CatchDecl->getType()) 12375dc0867af17b3bd6f567897433853b2b4767446cChris Lattner || CatchDecl->getType()->isObjCQualifiedIdType()) { 12385dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Use i8* null here to signal this is a catch all, not a cleanup. 12395dc0867af17b3bd6f567897433853b2b4767446cChris Lattner ESelArgs.push_back(NULLPtr); 12405dc0867af17b3bd6f567897433853b2b4767446cChris Lattner HasCatchAll = true; 12415dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // No further catches after this one will ever by reached 12425dc0867af17b3bd6f567897433853b2b4767446cChris Lattner break; 12435dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 12445dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 12455dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // All other types should be Objective-C interface pointer types. 12465dc0867af17b3bd6f567897433853b2b4767446cChris Lattner const PointerType *PT = CatchDecl->getType()->getAsPointerType(); 12475dc0867af17b3bd6f567897433853b2b4767446cChris Lattner assert(PT && "Invalid @catch type."); 12485dc0867af17b3bd6f567897433853b2b4767446cChris Lattner const ObjCInterfaceType *IT = 12495dc0867af17b3bd6f567897433853b2b4767446cChris Lattner PT->getPointeeType()->getAsObjCInterfaceType(); 12505dc0867af17b3bd6f567897433853b2b4767446cChris Lattner assert(IT && "Invalid @catch type."); 1251bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner llvm::Value *EHType = 1252bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner MakeConstantString(IT->getDecl()->getNameAsString()); 12535dc0867af17b3bd6f567897433853b2b4767446cChris Lattner ESelArgs.push_back(EHType); 12545dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 12555dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 12565dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 12575dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 12585dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // We use a cleanup unless there was already a catch all. 12595dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (!HasCatchAll) { 12605dc0867af17b3bd6f567897433853b2b4767446cChris Lattner ESelArgs.push_back(llvm::ConstantInt::get(llvm::Type::Int32Ty, 0)); 12615dc0867af17b3bd6f567897433853b2b4767446cChris Lattner Handlers.push_back(std::make_pair((const ParmVarDecl*) 0, (const Stmt*) 0)); 12625dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 12635dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 12645dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Find which handler was matched. 1265bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner llvm::Value *ESelector = CGF.Builder.CreateCall(llvm_eh_selector, 12665dc0867af17b3bd6f567897433853b2b4767446cChris Lattner ESelArgs.begin(), ESelArgs.end(), "selector"); 12675dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 12685dc0867af17b3bd6f567897433853b2b4767446cChris Lattner for (unsigned i = 0, e = Handlers.size(); i != e; ++i) { 12695dc0867af17b3bd6f567897433853b2b4767446cChris Lattner const ParmVarDecl *CatchParam = Handlers[i].first; 12705dc0867af17b3bd6f567897433853b2b4767446cChris Lattner const Stmt *CatchBody = Handlers[i].second; 12715dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 12725dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *Next = 0; 12735dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 12745dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // The last handler always matches. 12755dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (i + 1 != e) { 12765dc0867af17b3bd6f567897433853b2b4767446cChris Lattner assert(CatchParam && "Only last handler can be a catch all."); 12775dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 12785dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Test whether this block matches the type for the selector and branch 12795dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // to Match if it does, or to the next BB if it doesn't. 12805dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *Match = CGF.createBasicBlock("match"); 12815dc0867af17b3bd6f567897433853b2b4767446cChris Lattner Next = CGF.createBasicBlock("catch.next"); 1282bb422ad4f449cd195a141309a886ff467baac5b2Chris Lattner llvm::Value *Id = CGF.Builder.CreateCall(llvm_eh_typeid_for, 12835dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateBitCast(ESelArgs[i+2], PtrTy)); 12845dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateCondBr(CGF.Builder.CreateICmpEQ(ESelector, Id), Match, 12855dc0867af17b3bd6f567897433853b2b4767446cChris Lattner Next); 12865dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 12875dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(Match); 12885dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 12895dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 12905dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (CatchBody) { 12915dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Value *ExcObject = CGF.Builder.CreateBitCast(Exc, 12925dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.ConvertType(CatchParam->getType())); 12935dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 12945dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Bind the catch parameter if it exists. 12955dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (CatchParam) { 12965dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // CatchParam is a ParmVarDecl because of the grammar 12975dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // construction used to handle this, but for codegen purposes 12985dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // we treat this as a local decl. 12995dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitLocalBlockVarDecl(*CatchParam); 13005dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateStore(ExcObject, CGF.GetAddrOfLocalVar(CatchParam)); 13015dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 13025dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 13035dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.ObjCEHValueStack.push_back(ExcObject); 13045dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitStmt(CatchBody); 13055dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.ObjCEHValueStack.pop_back(); 13065dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 13075dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBranchThroughCleanup(FinallyEnd); 13085dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 13095dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (Next) 13105dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(Next); 13115dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } else { 13125dc0867af17b3bd6f567897433853b2b4767446cChris Lattner assert(!Next && "catchup should be last handler."); 13135dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 13145dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateStore(Exc, RethrowPtr); 13155dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBranchThroughCleanup(FinallyRethrow); 13165dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 13175dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 1318d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner // The @finally block is a secondary landing pad for any exceptions thrown in 1319d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner // @catch() blocks 1320d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.EmitBlock(CatchInCatch); 1321d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner Exc = CGF.Builder.CreateCall(llvm_eh_exception, "exc"); 1322d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner ESelArgs.clear(); 1323d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner ESelArgs.push_back(Exc); 1324d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner ESelArgs.push_back(Personality); 1325d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner ESelArgs.push_back(llvm::ConstantInt::get(llvm::Type::Int32Ty, 0)); 1326d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.Builder.CreateCall(llvm_eh_selector, ESelArgs.begin(), ESelArgs.end(), 1327d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner "selector"); 1328d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.Builder.CreateCall(llvm_eh_typeid_for, 1329d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.Builder.CreateIntToPtr(ESelArgs[2], PtrTy)); 1330d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.Builder.CreateStore(Exc, RethrowPtr); 1331d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.EmitBranchThroughCleanup(FinallyRethrow); 1332d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner 13335dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CodeGenFunction::CleanupBlockInfo Info = CGF.PopCleanupBlock(); 13345dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 13355dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.setInvokeDest(PrevLandingPad); 13365dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 13375dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(FinallyBlock); 13385dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 1339d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner 13405dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (isTry) { 13415dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (const ObjCAtFinallyStmt* FinallyStmt = 13425dc0867af17b3bd6f567897433853b2b4767446cChris Lattner cast<ObjCAtTryStmt>(S).getFinallyStmt()) 13435dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitStmt(FinallyStmt->getFinallyBody()); 13445dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } else { 1345d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner // Emit 'objc_sync_exit(expr)' as finally's sole statement for 13465dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // @synchronized. 1347d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner std::vector<const llvm::Type*> Args(1, IdTy); 1348d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner llvm::FunctionType *FTy = 1349d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner llvm::FunctionType::get(llvm::Type::VoidTy, Args, false); 1350d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner llvm::Value *SyncExit = CGM.CreateRuntimeFunction(FTy, "objc_sync_exit"); 1351d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner llvm::Value *SyncArg = 1352d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.EmitScalarExpr(cast<ObjCAtSynchronizedStmt>(S).getSynchExpr()); 1353d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner SyncArg = CGF.Builder.CreateBitCast(SyncArg, IdTy); 1354d6a9907ceff2c52738a72e38b6a04ab44ce1173fChris Lattner CGF.Builder.CreateCall(SyncExit, SyncArg); 13555dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 13565dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 13575dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (Info.SwitchBlock) 13585dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(Info.SwitchBlock); 13595dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (Info.EndBlock) 13605dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(Info.EndBlock); 13615dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 13625dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Branch around the rethrow code. 13635dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBranch(FinallyEnd); 13645dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 13655dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(FinallyRethrow); 13665dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateCall(RethrowFn, CGF.Builder.CreateLoad(RethrowPtr)); 13675dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateUnreachable(); 13685dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 13695dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.EmitBlock(FinallyEnd); 13705dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 137164d5d6c5903157c521af496479d06dc26032d718Anders Carlsson} 137264d5d6c5903157c521af496479d06dc26032d718Anders Carlsson 137364d5d6c5903157c521af496479d06dc26032d718Anders Carlssonvoid CGObjCGNU::EmitThrowStmt(CodeGen::CodeGenFunction &CGF, 137449f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar const ObjCAtThrowStmt &S) { 13755dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Value *ExceptionAsObject; 13765dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 13775dc0867af17b3bd6f567897433853b2b4767446cChris Lattner std::vector<const llvm::Type*> Args(1, IdTy); 13785dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::FunctionType *FTy = 13795dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::FunctionType::get(llvm::Type::VoidTy, Args, false); 13805dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Value *ThrowFn = 13815dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGM.CreateRuntimeFunction(FTy, "objc_exception_throw"); 13825dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 13835dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (const Expr *ThrowExpr = S.getThrowExpr()) { 13845dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Value *Exception = CGF.EmitScalarExpr(ThrowExpr); 13851e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian ExceptionAsObject = Exception; 13865dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } else { 13875dc0867af17b3bd6f567897433853b2b4767446cChris Lattner assert((!CGF.ObjCEHValueStack.empty() && CGF.ObjCEHValueStack.back()) && 13885dc0867af17b3bd6f567897433853b2b4767446cChris Lattner "Unexpected rethrow outside @catch block."); 13895dc0867af17b3bd6f567897433853b2b4767446cChris Lattner ExceptionAsObject = CGF.ObjCEHValueStack.back(); 13905dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 13911e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian ExceptionAsObject = 13921e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian CGF.Builder.CreateBitCast(ExceptionAsObject, IdTy, "tmp"); 13935dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 13945dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Note: This may have to be an invoke, if we want to support constructs like: 13955dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // @try { 13965dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // @throw(obj); 13975dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // } 13985dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // @catch(id) ... 13995dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // 14005dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // This is effectively turning @throw into an incredibly-expensive goto, but 14015dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // it may happen as a result of inlining followed by missed optimizations, or 14025dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // as a result of stupidity. 14035dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *UnwindBB = CGF.getInvokeDest(); 14045dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (!UnwindBB) { 14055dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateCall(ThrowFn, ExceptionAsObject); 14065dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateUnreachable(); 14075dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } else { 14085dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateInvoke(ThrowFn, UnwindBB, UnwindBB, &ExceptionAsObject, 14095dc0867af17b3bd6f567897433853b2b4767446cChris Lattner &ExceptionAsObject+1); 14105dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 14115dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Clear the insertion point to indicate we are in unreachable code. 14125dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.ClearInsertionPoint(); 141364d5d6c5903157c521af496479d06dc26032d718Anders Carlsson} 141464d5d6c5903157c521af496479d06dc26032d718Anders Carlsson 14153e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanianllvm::Value * CGObjCGNU::EmitObjCWeakRead(CodeGen::CodeGenFunction &CGF, 14166dc2317b59cb1180a59f6c283d96b7a5dfeb5307Fariborz Jahanian llvm::Value *AddrWeakObj) 14176dc2317b59cb1180a59f6c283d96b7a5dfeb5307Fariborz Jahanian{ 14186dc2317b59cb1180a59f6c283d96b7a5dfeb5307Fariborz Jahanian return 0; 14196dc2317b59cb1180a59f6c283d96b7a5dfeb5307Fariborz Jahanian} 14206dc2317b59cb1180a59f6c283d96b7a5dfeb5307Fariborz Jahanian 14213e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanianvoid CGObjCGNU::EmitObjCWeakAssign(CodeGen::CodeGenFunction &CGF, 14223e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian llvm::Value *src, llvm::Value *dst) 14233e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian{ 14243e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian return; 14253e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian} 14263e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian 142758626500527695865683d1d65053743de8770b60Fariborz Jahanianvoid CGObjCGNU::EmitObjCGlobalAssign(CodeGen::CodeGenFunction &CGF, 142858626500527695865683d1d65053743de8770b60Fariborz Jahanian llvm::Value *src, llvm::Value *dst) 142958626500527695865683d1d65053743de8770b60Fariborz Jahanian{ 143058626500527695865683d1d65053743de8770b60Fariborz Jahanian return; 143158626500527695865683d1d65053743de8770b60Fariborz Jahanian} 143258626500527695865683d1d65053743de8770b60Fariborz Jahanian 14337eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanianvoid CGObjCGNU::EmitObjCIvarAssign(CodeGen::CodeGenFunction &CGF, 14347eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanian llvm::Value *src, llvm::Value *dst) 14357eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanian{ 14367eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanian return; 14377eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanian} 14387eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanian 143958626500527695865683d1d65053743de8770b60Fariborz Jahanianvoid CGObjCGNU::EmitObjCStrongCastAssign(CodeGen::CodeGenFunction &CGF, 144058626500527695865683d1d65053743de8770b60Fariborz Jahanian llvm::Value *src, llvm::Value *dst) 144158626500527695865683d1d65053743de8770b60Fariborz Jahanian{ 144258626500527695865683d1d65053743de8770b60Fariborz Jahanian return; 144358626500527695865683d1d65053743de8770b60Fariborz Jahanian} 144458626500527695865683d1d65053743de8770b60Fariborz Jahanian 1445598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz JahanianLValue CGObjCGNU::EmitObjCValueForIvar(CodeGen::CodeGenFunction &CGF, 1446598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian QualType ObjectTy, 1447598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian llvm::Value *BaseValue, 1448598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian const ObjCIvarDecl *Ivar, 1449598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian unsigned CVRQualifiers) { 1450525c9b7baeeff022127cd1b167579f3bda73b3edDaniel Dunbar const ObjCInterfaceDecl *ID = ObjectTy->getAsObjCInterfaceType()->getDecl(); 14519777687562c338601c2f17906e65e1c1a0aad96fDaniel Dunbar return EmitValueForIvarAtOffset(CGF, ID, BaseValue, Ivar, CVRQualifiers, 14529777687562c338601c2f17906e65e1c1a0aad96fDaniel Dunbar EmitIvarOffset(CGF, ID, Ivar)); 14530bb20361a321593887f067515dd04cf109f4c74aFariborz Jahanian} 14540bb20361a321593887f067515dd04cf109f4c74aFariborz Jahanian 1455f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanianllvm::Value *CGObjCGNU::EmitIvarOffset(CodeGen::CodeGenFunction &CGF, 14562a03192a02dbf4fdff438d1e658356bde871aba4Daniel Dunbar const ObjCInterfaceDecl *Interface, 1457f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian const ObjCIvarDecl *Ivar) { 14589777687562c338601c2f17906e65e1c1a0aad96fDaniel Dunbar uint64_t Offset = ComputeIvarBaseOffset(CGF.CGM, Interface, Ivar); 145984ad77a8f83121713ea69d8002d1fd19565f87abDaniel Dunbar return llvm::ConstantInt::get(LongTy, Offset); 1460f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian} 1461f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian 1462c17a4d3b16a2624a76de5d7508805534545bd3bfDaniel DunbarCodeGen::CGObjCRuntime *CodeGen::CreateGNUObjCRuntime(CodeGen::CodeGenModule &CGM){ 1463dce1406f1c1f572cfd61c494546572d63461c741Chris Lattner return new CGObjCGNU(CGM); 14640f984268b05edab2cc555a427c441baa9c252658Chris Lattner} 1465