CGObjCGNU.cpp revision c972c92f757957bf414c6195b1f2ae25a2b4dd37
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// 10fc8f0e14ad142ed811e90fbd9a30e419e301c717Chris Lattner// This provides Objective-C code generation targeting 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" 2036f893c1efe367f929d92c8b125f964c22ba189eJohn McCall#include "CGCleanup.h" 21dce1406f1c1f572cfd61c494546572d63461c741Chris Lattner#include "clang/AST/ASTContext.h" 22e91593ef084479340582b2ba177b44be50a717b7Daniel Dunbar#include "clang/AST/Decl.h" 23af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar#include "clang/AST/DeclObjC.h" 2419cc4abea06a9b49e0e16a50d335c064cd723572Anders Carlsson#include "clang/AST/RecordLayout.h" 2516f0049415ec596504891259e2a83e19871c0d52Chris Lattner#include "clang/AST/StmtObjC.h" 269f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall#include "clang/Basic/SourceManager.h" 279f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall#include "clang/Basic/FileManager.h" 285dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 295dc0867af17b3bd6f567897433853b2b4767446cChris Lattner#include "llvm/Intrinsics.h" 300f984268b05edab2cc555a427c441baa9c252658Chris Lattner#include "llvm/Module.h" 31c6cd5fd3eae71f8841504a396563343cfaaf503eDavid Chisnall#include "llvm/LLVMContext.h" 320f984268b05edab2cc555a427c441baa9c252658Chris Lattner#include "llvm/ADT/SmallVector.h" 3320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov#include "llvm/ADT/StringMap.h" 3480558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall#include "llvm/Support/CallSite.h" 357ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar#include "llvm/Support/Compiler.h" 367ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar#include "llvm/Target/TargetData.h" 375dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 385f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner#include <cstdarg> 39e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner 40e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner 41dce1406f1c1f572cfd61c494546572d63461c741Chris Lattnerusing namespace clang; 4246f45b9bec4a265ad8400a538e5ec3a5683617f1Daniel Dunbarusing namespace CodeGen; 4320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 440f984268b05edab2cc555a427c441baa9c252658Chris Lattner 450f984268b05edab2cc555a427c441baa9c252658Chris Lattnernamespace { 4681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// Class that lazily initialises the runtime function. Avoids inserting the 4781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// types and the function declaration into a module if they're not used, and 4881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// avoids constructing the type more than once if it's used more than once. 499f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallclass LazyRuntimeFunction { 509f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall CodeGenModule *CGM; 519cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner std::vector<llvm::Type*> ArgTys; 529f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall const char *FunctionName; 53789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnall llvm::Constant *Function; 549f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall public: 5581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Constructor leaves this class uninitialized, because it is intended to 5681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// be used as a field in another class and not all of the types that are 5781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// used as arguments will necessarily be available at construction time. 589f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction() : CGM(0), FunctionName(0), Function(0) {} 599f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 6081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Initialises the lazy function with the name, return type, and the types 6181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// of the arguments. 629f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall END_WITH_NULL 639f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall void init(CodeGenModule *Mod, const char *name, 649cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::Type *RetTy, ...) { 659f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall CGM =Mod; 669f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall FunctionName = name; 679f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Function = 0; 689735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall ArgTys.clear(); 699f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall va_list Args; 709f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall va_start(Args, RetTy); 719cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner while (llvm::Type *ArgTy = va_arg(Args, llvm::Type*)) 729f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall ArgTys.push_back(ArgTy); 739f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall va_end(Args); 749f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // Push the return type on at the end so we can pop it off easily 759f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall ArgTys.push_back(RetTy); 769f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall } 7781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Overloaded cast operator, allows the class to be implicitly cast to an 7881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM constant. 79789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnall operator llvm::Constant*() { 809f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall if (!Function) { 819735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall if (0 == FunctionName) return 0; 829735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // We put the return type on the end of the vector, so pop it back off 832acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Type *RetTy = ArgTys.back(); 849f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall ArgTys.pop_back(); 859f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::FunctionType *FTy = llvm::FunctionType::get(RetTy, ArgTys, false); 869f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Function = 87789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnall cast<llvm::Constant>(CGM->CreateRuntimeFunction(FTy, FunctionName)); 889735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // We won't need to use the types again, so we may as well clean up the 899735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // vector now 909f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall ArgTys.resize(0); 919f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall } 929f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall return Function; 939f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall } 94789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnall operator llvm::Function*() { 955f0bcc4c3f4a75375a3571e71bffebf603f4ca67David Chisnall return cast<llvm::Function>((llvm::Constant*)*this); 96789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnall } 975f0bcc4c3f4a75375a3571e71bffebf603f4ca67David Chisnall 989f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall}; 999f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 1009f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 10181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// GNU Objective-C runtime code generation. This class implements the parts of 102f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall/// Objective-C support that are specific to the GNU family of runtimes (GCC, 103f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall/// GNUstep and ObjFW). 1049f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallclass CGObjCGNU : public CGObjCRuntime { 105c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnallprotected: 10681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// The LLVM module into which output is inserted 1070f984268b05edab2cc555a427c441baa9c252658Chris Lattner llvm::Module &TheModule; 10881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// strut objc_super. Used for sending messages to super. This structure 10981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// contains the receiver (object) and the expected class. 1102acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::StructType *ObjCSuperTy; 11181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// struct objc_super*. The type of the argument to the superclass message 11281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// lookup functions. 1132acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::PointerType *PtrToObjCSuperTy; 11481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM type for selectors. Opaque pointer (i8*) unless a header declaring 11581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// SEL is included in a header somewhere, in which case it will be whatever 11681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// type is declared in that header, most likely {i8*, i8*}. 1179cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::PointerType *SelectorTy; 11881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM i8 type. Cached here to avoid repeatedly getting it in all of the 11981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// places where it's used 1202acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::IntegerType *Int8Ty; 12181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Pointer to i8 - LLVM type of char*, for all of the places where the 12281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// runtime needs to deal with C strings. 1239cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::PointerType *PtrToInt8Ty; 12481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Instance Method Pointer type. This is a pointer to a function that takes, 12581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// at a minimum, an object and a selector, and is the generic type for 12681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Objective-C methods. Due to differences between variadic / non-variadic 12781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// calling conventions, it must always be cast to the correct type before 12881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// actually being used. 1299cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::PointerType *IMPTy; 13081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Type of an untyped Objective-C object. Clang treats id as a built-in type 13181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// when compiling Objective-C code, so this may be an opaque pointer (i8*), 13281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// but if the runtime header declaring it is included then it may be a 13381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// pointer to a structure. 1349cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::PointerType *IdTy; 13581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Pointer to a pointer to an Objective-C object. Used in the new ABI 13681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// message lookup function and some GC-related functions. 1372acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::PointerType *PtrToIdTy; 13881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// The clang type of id. Used when using the clang CGCall infrastructure to 13981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// call Objective-C methods. 140ead608af31b6c9abeae1ca6d0b75094dac4641c0John McCall CanQualType ASTIdTy; 14181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM type for C int type. 1429cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::IntegerType *IntTy; 14381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM type for an opaque pointer. This is identical to PtrToInt8Ty, but is 14481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// used in the code to document the difference between i8* meaning a pointer 14581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// to a C string and i8* meaning a pointer to some opaque type. 1469cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::PointerType *PtrTy; 14781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM type for C long type. The runtime uses this in a lot of places where 14881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// it should be using intptr_t, but we can't fix this without breaking 14981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// compatibility with GCC... 150ef6de3da8572607f786303c07150daa6e140ab19Jay Foad llvm::IntegerType *LongTy; 15181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM type for C size_t. Used in various runtime data structures. 1522acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::IntegerType *SizeTy; 15349de5289acea91c9d224c9aadd4d527e8f9fdaffDavid Chisnall /// LLVM type for C intptr_t. 15449de5289acea91c9d224c9aadd4d527e8f9fdaffDavid Chisnall llvm::IntegerType *IntPtrTy; 15581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM type for C ptrdiff_t. Mainly used in property accessor functions. 1562acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::IntegerType *PtrDiffTy; 15781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM type for C int*. Used for GCC-ABI-compatible non-fragile instance 15881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// variables. 1592acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::PointerType *PtrToIntTy; 16081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM type for Objective-C BOOL type. 1612acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Type *BoolTy; 162917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// 32-bit integer type, to save us needing to look it up every time it's used. 163917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::IntegerType *Int32Ty; 164917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// 64-bit integer type, to save us needing to look it up every time it's used. 165917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::IntegerType *Int64Ty; 16681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Metadata kind used to tie method lookups to message sends. The GNUstep 16781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// runtime provides some LLVM passes that can use this to do things like 16881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// automatic IMP caching and speculative inlining. 169c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall unsigned msgSendMDKind; 17081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Helper function that generates a constant string and returns a pointer to 17181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// the start of the string. The result of this function can be used anywhere 17281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// where the C code specifies const char*. 1739735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::Constant *MakeConstantString(const std::string &Str, 1749735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall const std::string &Name="") { 1759735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::Constant *ConstStr = CGM.GetAddrOfConstantCString(Str, Name.c_str()); 176a5c04344fa70d6eec34344760c1fe511e16f2d76Jay Foad return llvm::ConstantExpr::getGetElementPtr(ConstStr, Zeros); 1779735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall } 17881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Emits a linkonce_odr string, whose name is the prefix followed by the 17981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// string value. This allows the linker to combine the strings between 18081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// different modules. Used for EH typeinfo names, selector strings, and a 18181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// few other things. 1829735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::Constant *ExportUniqueString(const std::string &Str, 1839735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall const std::string prefix) { 1849735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall std::string name = prefix + Str; 1859735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::Constant *ConstStr = TheModule.getGlobalVariable(name); 1869735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall if (!ConstStr) { 18794010695f7fce626e41ef045b60def9c912e9ce8Chris Lattner llvm::Constant *value = llvm::ConstantDataArray::getString(VMContext,Str); 1889735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall ConstStr = new llvm::GlobalVariable(TheModule, value->getType(), true, 1899735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::GlobalValue::LinkOnceODRLinkage, value, prefix + Str); 1909735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall } 191a5c04344fa70d6eec34344760c1fe511e16f2d76Jay Foad return llvm::ConstantExpr::getGetElementPtr(ConstStr, Zeros); 1929735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall } 19381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Generates a global structure, initialized by the elements in the vector. 19481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// The element types must match the types of the structure elements in the 19581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// first argument. 1962acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::GlobalVariable *MakeGlobal(llvm::StructType *Ty, 197917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::ArrayRef<llvm::Constant*> V, 1985f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef Name="", 1999735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::GlobalValue::LinkageTypes linkage 2009735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall =llvm::GlobalValue::InternalLinkage) { 2019735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::Constant *C = llvm::ConstantStruct::get(Ty, V); 2029735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall return new llvm::GlobalVariable(TheModule, Ty, false, 2039735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall linkage, C, Name); 2049735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall } 20581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Generates a global array. The vector must contain the same number of 20681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// elements that the array type declares, of the type specified as the array 20781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// element type. 2082acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::GlobalVariable *MakeGlobal(llvm::ArrayType *Ty, 209917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::ArrayRef<llvm::Constant*> V, 2105f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef Name="", 2119735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::GlobalValue::LinkageTypes linkage 2129735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall =llvm::GlobalValue::InternalLinkage) { 2139735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::Constant *C = llvm::ConstantArray::get(Ty, V); 2149735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall return new llvm::GlobalVariable(TheModule, Ty, false, 2159735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall linkage, C, Name); 2169735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall } 21781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Generates a global array, inferring the array type from the specified 21881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// element type and the size of the initialiser. 2192acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::GlobalVariable *MakeGlobalArray(llvm::Type *Ty, 220917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::ArrayRef<llvm::Constant*> V, 2215f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef Name="", 2229735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::GlobalValue::LinkageTypes linkage 2239735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall =llvm::GlobalValue::InternalLinkage) { 2249735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::ArrayType *ArrayTy = llvm::ArrayType::get(Ty, V.size()); 2259735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall return MakeGlobal(ArrayTy, V, Name, linkage); 2269735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall } 22781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Ensures that the value has the required type, by inserting a bitcast if 22881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// required. This function lets us avoid inserting bitcasts that are 22981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// redundant. 2302acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Value* EnforceType(CGBuilderTy B, llvm::Value *V, llvm::Type *Ty){ 231c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall if (V->getType() == Ty) return V; 232c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall return B.CreateBitCast(V, Ty); 233c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } 234c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // Some zeros used for GEPs in lots of places. 235c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Constant *Zeros[2]; 23681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Null pointer value. Mainly used as a terminator in various arrays. 237c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Constant *NULLPtr; 23881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM context. 239c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::LLVMContext &VMContext; 240c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnallprivate: 24181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Placeholder for the class. Lots of things refer to the class before we've 24281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// actually emitted it. We use this alias as a placeholder, and then replace 24381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// it with a pointer to the class structure before finally emitting the 24481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// module. 2455efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar llvm::GlobalAlias *ClassPtrAlias; 24681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Placeholder for the metaclass. Lots of things refer to the class before 24781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// we've / actually emitted it. We use this alias as a placeholder, and then 24881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// replace / it with a pointer to the metaclass structure before finally 24981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// emitting the / module. 2505efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar llvm::GlobalAlias *MetaClassPtrAlias; 25181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// All of the classes that have been generated for this compilation units. 25220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Classes; 25381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// All of the categories that have been generated for this compilation units. 25420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Categories; 25581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// All of the Objective-C constant strings that have been generated for this 25681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// compilation units. 25720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> ConstantStrings; 25881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Map from string values to Objective-C constant strings in the output. 25981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Used to prevent emitting Objective-C strings more than once. This should 26081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// not be required at all - CodeGenModule should manage this list. 26148272a078e54d501cb05edd797c54b8e82ceb520David Chisnall llvm::StringMap<llvm::Constant*> ObjCStrings; 26281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// All of the protocols that have been declared. 26320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StringMap<llvm::Constant*> ExistingProtocols; 26481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// For each variant of a selector, we store the type encoding and a 26581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// placeholder value. For an untyped selector, the type will be the empty 26681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// string. Selector references are all done via the module's selector table, 26781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// so we create an alias as a placeholder and then replace it with the real 26881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// value later. 2699f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall typedef std::pair<std::string, llvm::GlobalAlias*> TypedSelector; 27081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Type of the selector map. This is roughly equivalent to the structure 27181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// used in the GNUstep runtime, which maintains a list of all of the valid 27281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// types for a selector in a table. 2735f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner typedef llvm::DenseMap<Selector, SmallVector<TypedSelector, 2> > 2749f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SelectorMap; 27581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// A map from selectors to selector types. This allows us to emit all 27681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// selectors of the same name and type together. 2779f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SelectorMap SelectorTable; 2789f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 27981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Selectors related to memory management. When compiling in GC mode, we 28081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// omit these. 281ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall Selector RetainSel, ReleaseSel, AutoreleaseSel; 28281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Runtime functions used for memory management in GC mode. Note that clang 28381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// supports code generation for calling these functions, but neither GNU 28481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// runtime actually supports this API properly yet. 2859f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction IvarAssignFn, StrongCastAssignFn, MemMoveFn, WeakReadFn, 2869f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall WeakAssignFn, GlobalAssignFn; 2879f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 28829254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall typedef std::pair<std::string, std::string> ClassAliasPair; 28929254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall /// All classes that have aliases set for them. 29029254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall std::vector<ClassAliasPair> ClassAliases; 29129254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall 2929735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnallprotected: 29381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Function used for throwing Objective-C exceptions. 2949f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction ExceptionThrowFn; 295809d1be9820039b4cf6efa48246a0d70ffa13394James Dennett /// Function used for rethrowing exceptions, used at the end of \@finally or 296809d1be9820039b4cf6efa48246a0d70ffa13394James Dennett /// \@synchronize blocks. 2979735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall LazyRuntimeFunction ExceptionReThrowFn; 29881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Function called when entering a catch function. This is required for 29981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// differentiating Objective-C exceptions and foreign exceptions. 3009735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall LazyRuntimeFunction EnterCatchFn; 30181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Function called when exiting from a catch block. Used to do exception 30281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// cleanup. 3039735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall LazyRuntimeFunction ExitCatchFn; 304809d1be9820039b4cf6efa48246a0d70ffa13394James Dennett /// Function called when entering an \@synchronize block. Acquires the lock. 3059f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction SyncEnterFn; 306809d1be9820039b4cf6efa48246a0d70ffa13394James Dennett /// Function called when exiting an \@synchronize block. Releases the lock. 3079f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction SyncExitFn; 3089f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 3099735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnallprivate: 3109735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall 31181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Function called if fast enumeration detects that the collection is 31281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// modified during the update. 3139f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction EnumerationMutationFn; 31481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Function for implementing synthesized property getters that return an 31581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// object. 3169f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction GetPropertyFn; 31781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Function for implementing synthesized property setters that return an 31881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// object. 3199f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction SetPropertyFn; 32081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Function used for non-object declared property getters. 3219f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction GetStructPropertyFn; 32281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Function used for non-object declared property setters. 3239f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction SetStructPropertyFn; 3249f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 32581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// The version of the runtime that this class targets. Must match the 32681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// version in the runtime. 327a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall int RuntimeVersion; 32881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// The version of the protocol class. Used to differentiate between ObjC1 32981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// and ObjC2 protocols. Objective-C 1 protocols can not contain optional 33081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// components and can not contain declared properties. We always emit 33181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Objective-C 2 property structures, but we have to pretend that they're 33281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Objective-C 1 property structures when targeting the GCC runtime or it 33381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// will abort. 3349f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall const int ProtocolVersion; 33520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovprivate: 33681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Generates an instance variable list structure. This is a structure 33781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// containing a size and an array of structures containing instance variable 33881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// metadata. This is used purely for introspection in the fragile ABI. In 33981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// the non-fragile ABI, it's used for instance variable fixup. 340795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling llvm::Constant *GenerateIvarList(ArrayRef<llvm::Constant *> IvarNames, 341795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling ArrayRef<llvm::Constant *> IvarTypes, 342795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling ArrayRef<llvm::Constant *> IvarOffsets); 34381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Generates a method list structure. This is a structure containing a size 34481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// and an array of structures containing method metadata. 34581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// 34681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// This structure is used by both classes and categories, and contains a next 34781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// pointer allowing them to be chained together in a linked list. 3485f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner llvm::Constant *GenerateMethodList(const StringRef &ClassName, 3495f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner const StringRef &CategoryName, 350795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling ArrayRef<Selector> MethodSels, 351795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling ArrayRef<llvm::Constant *> MethodTypes, 35220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov bool isClassMethodList); 353809d1be9820039b4cf6efa48246a0d70ffa13394James Dennett /// Emits an empty protocol. This is used for \@protocol() where no protocol 35481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// is found. The runtime will (hopefully) fix up the pointer to refer to the 35581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// real protocol. 356f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::Constant *GenerateEmptyProtocol(const std::string &ProtocolName); 35781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Generates a list of property metadata structures. This follows the same 35881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// pattern as method and instance variable metadata lists. 359d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *GeneratePropertyList(const ObjCImplementationDecl *OID, 3605f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVectorImpl<Selector> &InstanceMethodSels, 3615f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVectorImpl<llvm::Constant*> &InstanceMethodTypes); 36281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Generates a list of referenced protocols. Classes, categories, and 36381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// protocols all use this structure. 364795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling llvm::Constant *GenerateProtocolList(ArrayRef<std::string> Protocols); 36581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// To ensure that all protocols are seen by the runtime, we add a category on 36681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// a class defined in the runtime, declaring no methods, but adopting the 36781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// protocols. This is a horribly ugly hack, but it allows us to collect all 36881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// of the protocols without changing the ABI. 369d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian void GenerateProtocolHolderCategory(void); 37081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Generates a class structure. 37120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateClassStructure( 37220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MetaClass, 37320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SuperClass, 37420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov unsigned info, 375d002cc6fc5b72bf00e3b7b4571ccf0f23c789b4bChris Lattner const char *Name, 37620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Version, 37720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *InstanceSize, 37820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *IVars, 37920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Methods, 380d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *Protocols, 381d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *IvarOffsets, 3828c757f9ea33dccff4da7810e0c1bda59c19ddc9aDavid Chisnall llvm::Constant *Properties, 383917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::Constant *StrongIvarBitmap, 384917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::Constant *WeakIvarBitmap, 3858c757f9ea33dccff4da7810e0c1bda59c19ddc9aDavid Chisnall bool isMeta=false); 38681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Generates a method list. This is used by protocols to define the required 38781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// and optional methods. 38820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateProtocolMethodList( 389795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling ArrayRef<llvm::Constant *> MethodNames, 390795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling ArrayRef<llvm::Constant *> MethodTypes); 39181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Returns a selector with the specified type encoding. An empty string is 39281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// used to return an untyped selector (with the types field set to NULL). 3939f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::Value *GetSelector(CGBuilderTy &Builder, Selector Sel, 3949f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall const std::string &TypeEncoding, bool lval); 39581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Returns the variable used to store the offset of an instance variable. 3969cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian llvm::GlobalVariable *ObjCIvarOffsetVariable(const ObjCInterfaceDecl *ID, 3979cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCIvarDecl *Ivar); 39881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Emits a reference to a class. This allows the linker to object if there 39981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// is no class of the matching name. 400f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCallprotected: 4012a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner void EmitClassRef(const std::string &className); 402c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall /// Emits a pointer to the named class 403f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall virtual llvm::Value *GetClassNamed(CGBuilderTy &Builder, 404f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall const std::string &Name, bool isWeak); 40581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Looks up the method for sending a message to the specified object. This 40681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// mechanism differs between the GCC and GNU runtimes, so this method must be 40781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// overridden in subclasses. 408c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall virtual llvm::Value *LookupIMP(CodeGenFunction &CGF, 409c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *&Receiver, 410c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *cmd, 411c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::MDNode *node) = 0; 412917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// Looks up the method for sending a message to a superclass. This 413917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// mechanism differs between the GCC and GNU runtimes, so this method must 414917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// be overridden in subclasses. 415c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall virtual llvm::Value *LookupIMPSuper(CodeGenFunction &CGF, 416c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *ObjCSuper, 417c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *cmd) = 0; 418917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// Libobjc2 uses a bitfield representation where small(ish) bitfields are 419917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// stored in a 64-bit value with the low bit set to 1 and the remaining 63 420917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// bits set to their values, LSB first, while larger ones are stored in a 421917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// structure of this / form: 422917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// 423917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// struct { int32_t length; int32_t values[length]; }; 424917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// 425917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// The values in the array are stored in host-endian format, with the least 426917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// significant bit being assumed to come first in the bitfield. Therefore, 427917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// a bitfield with the 64th bit set will be (int64_t)&{ 2, [0, 1<<31] }, 428917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// while a bitfield / with the 63rd bit set will be 1<<64. 429795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling llvm::Constant *MakeBitField(ArrayRef<bool> bits); 4300f984268b05edab2cc555a427c441baa9c252658Chris Lattnerpublic: 4319f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall CGObjCGNU(CodeGenModule &cgm, unsigned runtimeABIVersion, 4329f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall unsigned protocolClassVersion); 4339f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 4340d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall virtual llvm::Constant *GenerateConstantString(const StringLiteral *); 4359f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 4369f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual RValue 4379f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall GenerateMessageSend(CodeGenFunction &CGF, 438ef072fd2f3347cfd857d6eb787b245b950771430John McCall ReturnValueSlot Return, 4397f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar QualType ResultType, 4407f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar Selector Sel, 441f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar llvm::Value *Receiver, 442df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian const CallArgList &CallArgs, 443c6cd5fd3eae71f8841504a396563343cfaaf503eDavid Chisnall const ObjCInterfaceDecl *Class, 444df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian const ObjCMethodDecl *Method); 4459f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual RValue 4469f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall GenerateMessageSendSuper(CodeGenFunction &CGF, 447ef072fd2f3347cfd857d6eb787b245b950771430John McCall ReturnValueSlot Return, 4487f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar QualType ResultType, 4497f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar Selector Sel, 450f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar const ObjCInterfaceDecl *Class, 4517ce77920a35060f1c8dd72e541e42ce296ccd168Fariborz Jahanian bool isCategoryImpl, 452f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar llvm::Value *Receiver, 45319cd87eb5fb3c197e631ce08fd52c446c4d4e8f1Daniel Dunbar bool IsClassMessage, 454d6c93d703541c992e06eb9a59a2d826a30da65b2Daniel Dunbar const CallArgList &CallArgs, 455d6c93d703541c992e06eb9a59a2d826a30da65b2Daniel Dunbar const ObjCMethodDecl *Method); 45645d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbar virtual llvm::Value *GetClass(CGBuilderTy &Builder, 457ddb2a3d55a24a1dbdf9152621642d9a4b4fc2f61Daniel Dunbar const ObjCInterfaceDecl *OID); 45803b2960c14aede6ac82bdef32247094ebb72fa69Fariborz Jahanian virtual llvm::Value *GetSelector(CGBuilderTy &Builder, Selector Sel, 45903b2960c14aede6ac82bdef32247094ebb72fa69Fariborz Jahanian bool lval = false); 4606d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbar virtual llvm::Value *GetSelector(CGBuilderTy &Builder, const ObjCMethodDecl 4616d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbar *Method); 462cf5abc7ba032bd35158e4d75b0bc92a482fc67e8Fariborz Jahanian virtual llvm::Constant *GetEHType(QualType T); 4631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4641eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump virtual llvm::Function *GenerateMethod(const ObjCMethodDecl *OMD, 465679a502d462ef819e6175b58e255ca3f3391e7cfFariborz Jahanian const ObjCContainerDecl *CD); 4667ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar virtual void GenerateCategory(const ObjCCategoryImplDecl *CMD); 4677ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar virtual void GenerateClass(const ObjCImplementationDecl *ClassDecl); 46829254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall virtual void RegisterAlias(const ObjCCompatibleAliasDecl *OAD); 46945d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbar virtual llvm::Value *GenerateProtocolRef(CGBuilderTy &Builder, 470af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar const ObjCProtocolDecl *PD); 471af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar virtual void GenerateProtocol(const ObjCProtocolDecl *PD); 47220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov virtual llvm::Function *ModuleInitFunction(); 473789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnall virtual llvm::Constant *GetPropertyGetFunction(); 474789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnall virtual llvm::Constant *GetPropertySetFunction(); 475ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek virtual llvm::Constant *GetOptimizedPropertySetFunction(bool atomic, 476ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek bool copy); 477789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnall virtual llvm::Constant *GetSetStructFunction(); 478e3173021fa3bfdf7e6759d67838e385a83b2d57eFariborz Jahanian virtual llvm::Constant *GetCppAtomicObjectFunction(); 479789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnall virtual llvm::Constant *GetGetStructFunction(); 480309a4368cd299cff30ab22709e2b772cf8059e45Daniel Dunbar virtual llvm::Constant *EnumerationMutationFunction(); 4811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4829f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual void EmitTryStmt(CodeGenFunction &CGF, 483f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall const ObjCAtTryStmt &S); 4849f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual void EmitSynchronizedStmt(CodeGenFunction &CGF, 485f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall const ObjCAtSynchronizedStmt &S); 4869f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual void EmitThrowStmt(CodeGenFunction &CGF, 48764d5d6c5903157c521af496479d06dc26032d718Anders Carlsson const ObjCAtThrowStmt &S); 4889f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual llvm::Value * EmitObjCWeakRead(CodeGenFunction &CGF, 4896dc2317b59cb1180a59f6c283d96b7a5dfeb5307Fariborz Jahanian llvm::Value *AddrWeakObj); 4909f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual void EmitObjCWeakAssign(CodeGenFunction &CGF, 4913e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian llvm::Value *src, llvm::Value *dst); 4929f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual void EmitObjCGlobalAssign(CodeGenFunction &CGF, 493021a7a63984f0f912dc9e9dae2a1b3e1509a40ceFariborz Jahanian llvm::Value *src, llvm::Value *dest, 494021a7a63984f0f912dc9e9dae2a1b3e1509a40ceFariborz Jahanian bool threadlocal=false); 4959f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual void EmitObjCIvarAssign(CodeGenFunction &CGF, 4966c7a1f364796ce1acb988714e9e42076d1ce332eFariborz Jahanian llvm::Value *src, llvm::Value *dest, 4976c7a1f364796ce1acb988714e9e42076d1ce332eFariborz Jahanian llvm::Value *ivarOffset); 4989f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual void EmitObjCStrongCastAssign(CodeGenFunction &CGF, 49958626500527695865683d1d65053743de8770b60Fariborz Jahanian llvm::Value *src, llvm::Value *dest); 5009f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual void EmitGCMemmoveCollectable(CodeGenFunction &CGF, 5011eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *DestPtr, 502082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian llvm::Value *SrcPtr, 50355bcace250e1ff366e4482714b344b8cbc8be5f3Fariborz Jahanian llvm::Value *Size); 5049f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual LValue EmitObjCValueForIvar(CodeGenFunction &CGF, 505598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian QualType ObjectTy, 506598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian llvm::Value *BaseValue, 507598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian const ObjCIvarDecl *Ivar, 508598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian unsigned CVRQualifiers); 5099f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual llvm::Value *EmitIvarOffset(CodeGenFunction &CGF, 5102a03192a02dbf4fdff438d1e658356bde871aba4Daniel Dunbar const ObjCInterfaceDecl *Interface, 511f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian const ObjCIvarDecl *Ivar); 512c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall virtual llvm::Value *EmitNSAutoreleasePoolClassRef(CGBuilderTy &Builder); 5139f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual llvm::Constant *BuildGCBlockLayout(CodeGenModule &CGM, 5146b5a61b6dc400027fd793dcadceeb9da944a37eaJohn McCall const CGBlockInfo &blockInfo) { 51589ecd41e0a6bfb3b0913dbe41c3c666340b308c7Fariborz Jahanian return NULLPtr; 51689ecd41e0a6bfb3b0913dbe41c3c666340b308c7Fariborz Jahanian } 5176f40e2244b0590f144c5ceee07981a962fbbc72eFariborz Jahanian 5186f40e2244b0590f144c5ceee07981a962fbbc72eFariborz Jahanian virtual llvm::GlobalVariable *GetClassGlobal(const std::string &Name) { 5196f40e2244b0590f144c5ceee07981a962fbbc72eFariborz Jahanian return 0; 5206f40e2244b0590f144c5ceee07981a962fbbc72eFariborz Jahanian } 5210f984268b05edab2cc555a427c441baa9c252658Chris Lattner}; 52281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// Class representing the legacy GCC Objective-C ABI. This is the default when 52381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// -fobjc-nonfragile-abi is not specified. 52481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// 52581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// The GCC ABI target actually generates code that is approximately compatible 52681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// with the new GNUstep runtime ABI, but refrains from using any features that 52781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// would not work with the GCC runtime. For example, clang always generates 52881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// the extended form of the class structure, and the extra fields are simply 52981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// ignored by GCC libobjc. 5309f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallclass CGObjCGCC : public CGObjCGNU { 53181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// The GCC ABI message lookup function. Returns an IMP pointing to the 53281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// method implementation for this message. 533c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall LazyRuntimeFunction MsgLookupFn; 53481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// The GCC ABI superclass message lookup function. Takes a pointer to a 53581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// structure describing the receiver and the class, and a selector as 53681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// arguments. Returns the IMP for the corresponding method. 537c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall LazyRuntimeFunction MsgLookupSuperFn; 538c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnallprotected: 539c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall virtual llvm::Value *LookupIMP(CodeGenFunction &CGF, 540c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *&Receiver, 541c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *cmd, 542c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::MDNode *node) { 543c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall CGBuilderTy &Builder = CGF.Builder; 5446f3887ec3652482d2e0e8959d8a89b785330b0b2David Chisnall llvm::Value *args[] = { 545c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall EnforceType(Builder, Receiver, IdTy), 5466f3887ec3652482d2e0e8959d8a89b785330b0b2David Chisnall EnforceType(Builder, cmd, SelectorTy) }; 5476f3887ec3652482d2e0e8959d8a89b785330b0b2David Chisnall llvm::CallSite imp = CGF.EmitCallOrInvoke(MsgLookupFn, args); 5486f3887ec3652482d2e0e8959d8a89b785330b0b2David Chisnall imp->setMetadata(msgSendMDKind, node); 5496f3887ec3652482d2e0e8959d8a89b785330b0b2David Chisnall return imp.getInstruction(); 550c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } 551c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall virtual llvm::Value *LookupIMPSuper(CodeGenFunction &CGF, 552c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *ObjCSuper, 553c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *cmd) { 554c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall CGBuilderTy &Builder = CGF.Builder; 555c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *lookupArgs[] = {EnforceType(Builder, ObjCSuper, 556c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall PtrToObjCSuperTy), cmd}; 5574c7d9f1507d0f102bd4133bba63348636facd469Jay Foad return Builder.CreateCall(MsgLookupSuperFn, lookupArgs); 558c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } 5599f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall public: 560c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall CGObjCGCC(CodeGenModule &Mod) : CGObjCGNU(Mod, 8, 2) { 561c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // IMP objc_msg_lookup(id, SEL); 562c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall MsgLookupFn.init(&CGM, "objc_msg_lookup", IMPTy, IdTy, SelectorTy, NULL); 563c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // IMP objc_msg_lookup_super(struct objc_super*, SEL); 564c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall MsgLookupSuperFn.init(&CGM, "objc_msg_lookup_super", IMPTy, 565c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall PtrToObjCSuperTy, SelectorTy, NULL); 566c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } 5679f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall}; 56881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// Class used when targeting the new GNUstep runtime ABI. 5699f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallclass CGObjCGNUstep : public CGObjCGNU { 57081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// The slot lookup function. Returns a pointer to a cacheable structure 57181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// that contains (among other things) the IMP. 572c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall LazyRuntimeFunction SlotLookupFn; 57381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// The GNUstep ABI superclass message lookup function. Takes a pointer to 57481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// a structure describing the receiver and the class, and a selector as 57581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// arguments. Returns the slot for the corresponding method. Superclass 57681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// message lookup rarely changes, so this is a good caching opportunity. 577c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall LazyRuntimeFunction SlotLookupSuperFn; 57881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Type of an slot structure pointer. This is returned by the various 57981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// lookup functions. 580c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Type *SlotTy; 581c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall protected: 582c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall virtual llvm::Value *LookupIMP(CodeGenFunction &CGF, 583c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *&Receiver, 584c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *cmd, 585c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::MDNode *node) { 586c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall CGBuilderTy &Builder = CGF.Builder; 587c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Function *LookupFn = SlotLookupFn; 588c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 589c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // Store the receiver on the stack so that we can reload it later 590c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *ReceiverPtr = CGF.CreateTempAlloca(Receiver->getType()); 591c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall Builder.CreateStore(Receiver, ReceiverPtr); 592c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 593c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *self; 594c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 595c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall if (isa<ObjCMethodDecl>(CGF.CurCodeDecl)) { 596c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall self = CGF.LoadObjCSelf(); 597c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } else { 598c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall self = llvm::ConstantPointerNull::get(IdTy); 599c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } 600c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 601c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // The lookup function is guaranteed not to capture the receiver pointer. 602c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall LookupFn->setDoesNotCapture(1); 603c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 6046f3887ec3652482d2e0e8959d8a89b785330b0b2David Chisnall llvm::Value *args[] = { 605c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall EnforceType(Builder, ReceiverPtr, PtrToIdTy), 606c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall EnforceType(Builder, cmd, SelectorTy), 6076f3887ec3652482d2e0e8959d8a89b785330b0b2David Chisnall EnforceType(Builder, self, IdTy) }; 6086f3887ec3652482d2e0e8959d8a89b785330b0b2David Chisnall llvm::CallSite slot = CGF.EmitCallOrInvoke(LookupFn, args); 6096f3887ec3652482d2e0e8959d8a89b785330b0b2David Chisnall slot.setOnlyReadsMemory(); 610c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall slot->setMetadata(msgSendMDKind, node); 611c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 612c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // Load the imp from the slot 6136f3887ec3652482d2e0e8959d8a89b785330b0b2David Chisnall llvm::Value *imp = 6146f3887ec3652482d2e0e8959d8a89b785330b0b2David Chisnall Builder.CreateLoad(Builder.CreateStructGEP(slot.getInstruction(), 4)); 615c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 616c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // The lookup function may have changed the receiver, so make sure we use 617c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // the new one. 618c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall Receiver = Builder.CreateLoad(ReceiverPtr, true); 619c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall return imp; 620c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } 621c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall virtual llvm::Value *LookupIMPSuper(CodeGenFunction &CGF, 622c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *ObjCSuper, 623c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *cmd) { 624c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall CGBuilderTy &Builder = CGF.Builder; 625c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *lookupArgs[] = {ObjCSuper, cmd}; 626c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 6274c7d9f1507d0f102bd4133bba63348636facd469Jay Foad llvm::CallInst *slot = Builder.CreateCall(SlotLookupSuperFn, lookupArgs); 628c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall slot->setOnlyReadsMemory(); 629c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 630c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall return Builder.CreateLoad(Builder.CreateStructGEP(slot, 4)); 631c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } 6329f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall public: 633c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall CGObjCGNUstep(CodeGenModule &Mod) : CGObjCGNU(Mod, 9, 3) { 6347650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *SlotStructTy = llvm::StructType::get(PtrTy, 635c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall PtrTy, PtrTy, IntTy, IMPTy, NULL); 636c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall SlotTy = llvm::PointerType::getUnqual(SlotStructTy); 637c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // Slot_t objc_msg_lookup_sender(id *receiver, SEL selector, id sender); 638c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall SlotLookupFn.init(&CGM, "objc_msg_lookup_sender", SlotTy, PtrToIdTy, 639c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall SelectorTy, IdTy, NULL); 640c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // Slot_t objc_msg_lookup_super(struct objc_super*, SEL); 641c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall SlotLookupSuperFn.init(&CGM, "objc_slot_lookup_super", SlotTy, 642c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall PtrToObjCSuperTy, SelectorTy, NULL); 6439735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // If we're in ObjC++ mode, then we want to make 6444e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (CGM.getLangOpts().CPlusPlus) { 6459cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::Type *VoidTy = llvm::Type::getVoidTy(VMContext); 6469735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // void *__cxa_begin_catch(void *e) 6479735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall EnterCatchFn.init(&CGM, "__cxa_begin_catch", PtrTy, PtrTy, NULL); 6489735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // void __cxa_end_catch(void) 6494bd5d09e3a233ed23ec6f913166e4b75d8de215cDavid Chisnall ExitCatchFn.init(&CGM, "__cxa_end_catch", VoidTy, NULL); 6509735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // void _Unwind_Resume_or_Rethrow(void*) 651978d415adab4ef423f5aef430ddfdbefc4cfb000David Chisnall ExceptionReThrowFn.init(&CGM, "_Unwind_Resume_or_Rethrow", VoidTy, PtrTy, NULL); 6529735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall } 653c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } 6549f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall}; 6559f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 6561503f0ddab0057e33efa21393fc0577580d6287aJohn McCall/// The ObjFW runtime, which closely follows the GCC runtime's 6571503f0ddab0057e33efa21393fc0577580d6287aJohn McCall/// compiler ABI. Support here is due to Jonathan Schleifer, the 6581503f0ddab0057e33efa21393fc0577580d6287aJohn McCall/// ObjFW maintainer. 6591503f0ddab0057e33efa21393fc0577580d6287aJohn McCallclass CGObjCObjFW : public CGObjCGCC { 6601503f0ddab0057e33efa21393fc0577580d6287aJohn McCall /// Emit class references unconditionally as direct symbol references. 661f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall virtual llvm::Value *GetClassNamed(CGBuilderTy &Builder, 662f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall const std::string &Name, bool isWeak) { 663f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall if (isWeak) 664f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall return CGObjCGNU::GetClassNamed(Builder, Name, isWeak); 665f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall 666f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall EmitClassRef(Name); 667f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall 668f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall std::string SymbolName = "_OBJC_CLASS_" + Name; 669f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall 670f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall llvm::GlobalVariable *ClassSymbol = TheModule.getGlobalVariable(SymbolName); 671f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall 672f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall if (!ClassSymbol) 673f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall ClassSymbol = new llvm::GlobalVariable(TheModule, LongTy, false, 674f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall llvm::GlobalValue::ExternalLinkage, 675f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall 0, SymbolName); 676f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall 677f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall return ClassSymbol; 678f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall } 679f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall 680f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCallpublic: 681f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall CGObjCObjFW(CodeGenModule &Mod): CGObjCGCC(Mod) {} 682f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall}; 6830f984268b05edab2cc555a427c441baa9c252658Chris Lattner} // end anonymous namespace 6840f984268b05edab2cc555a427c441baa9c252658Chris Lattner 68520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 6862a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner/// Emits a reference to a dummy variable which is emitted with each class. 6872a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner/// This ensures that a linker error will be generated when trying to link 6882a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner/// together modules where a referenced class is not defined. 689bb1c8600218b3244340331165fc7cba7bf227655Mike Stumpvoid CGObjCGNU::EmitClassRef(const std::string &className) { 6902a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner std::string symbolRef = "__objc_class_ref_" + className; 6912a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner // Don't emit two copies of the same symbol 692bb1c8600218b3244340331165fc7cba7bf227655Mike Stump if (TheModule.getGlobalVariable(symbolRef)) 693bb1c8600218b3244340331165fc7cba7bf227655Mike Stump return; 6942a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner std::string symbolName = "__objc_class_name_" + className; 6952a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner llvm::GlobalVariable *ClassSymbol = TheModule.getGlobalVariable(symbolName); 6962a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner if (!ClassSymbol) { 6971c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson ClassSymbol = new llvm::GlobalVariable(TheModule, LongTy, false, 6981c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson llvm::GlobalValue::ExternalLinkage, 0, symbolName); 6992a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner } 7001c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson new llvm::GlobalVariable(TheModule, ClassSymbol->getType(), true, 701f35271b8677a5f31498b89587b1da42a06dd46fdChris Lattner llvm::GlobalValue::WeakAnyLinkage, ClassSymbol, symbolRef); 7022a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner} 70320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 7045f9e272e632e951b1efe824cd16acb4d96077930Chris Lattnerstatic std::string SymbolNameForMethod(const StringRef &ClassName, 7055f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner const StringRef &CategoryName, const Selector MethodName, 7069f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall bool isClassMethod) { 7079f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall std::string MethodNameColonStripped = MethodName.getAsString(); 708d346736dfe5ef584a2d0c9d27d217408ee394b9bDavid Chisnall std::replace(MethodNameColonStripped.begin(), MethodNameColonStripped.end(), 709d346736dfe5ef584a2d0c9d27d217408ee394b9bDavid Chisnall ':', '_'); 7105f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner return (Twine(isClassMethod ? "_c_" : "_i_") + ClassName + "_" + 7119f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall CategoryName + "_" + MethodNameColonStripped).str(); 71287935a8d5c0eeda8ad62815f4fc815ad25c7cd8eDavid Chisnall} 71320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 7149f6614e3c5d34998dd5a5cc6faf0746dcd611d49David ChisnallCGObjCGNU::CGObjCGNU(CodeGenModule &cgm, unsigned runtimeABIVersion, 7159f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall unsigned protocolClassVersion) 716de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall : CGObjCRuntime(cgm), TheModule(CGM.getModule()), 717de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall VMContext(cgm.getLLVMContext()), ClassPtrAlias(0), MetaClassPtrAlias(0), 718de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall RuntimeVersion(runtimeABIVersion), ProtocolVersion(protocolClassVersion) { 719c6cd5fd3eae71f8841504a396563343cfaaf503eDavid Chisnall 720c6cd5fd3eae71f8841504a396563343cfaaf503eDavid Chisnall msgSendMDKind = VMContext.getMDKindID("GNUObjCMessageSend"); 721c6cd5fd3eae71f8841504a396563343cfaaf503eDavid Chisnall 7229f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall CodeGenTypes &Types = CGM.getTypes(); 723e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner IntTy = cast<llvm::IntegerType>( 7249f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Types.ConvertType(CGM.getContext().IntTy)); 725e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner LongTy = cast<llvm::IntegerType>( 7269f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Types.ConvertType(CGM.getContext().LongTy)); 7278fac25d33b13e25f512dd921d4d5a4b565f5d175David Chisnall SizeTy = cast<llvm::IntegerType>( 7289f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Types.ConvertType(CGM.getContext().getSizeType())); 7298fac25d33b13e25f512dd921d4d5a4b565f5d175David Chisnall PtrDiffTy = cast<llvm::IntegerType>( 7309f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Types.ConvertType(CGM.getContext().getPointerDiffType())); 7318fac25d33b13e25f512dd921d4d5a4b565f5d175David Chisnall BoolTy = CGM.getTypes().ConvertType(CGM.getContext().BoolTy); 7321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 733d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Int8Ty = llvm::Type::getInt8Ty(VMContext); 734d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // C string type. Used in lots of places. 735d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrToInt8Ty = llvm::PointerType::getUnqual(Int8Ty); 736d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 7374a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Zeros[0] = llvm::ConstantInt::get(LongTy, 0); 73820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Zeros[1] = Zeros[0]; 739d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian NULLPtr = llvm::ConstantPointerNull::get(PtrToInt8Ty); 740391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner // Get the selector Type. 7410d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall QualType selTy = CGM.getContext().getObjCSelType(); 7420d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall if (QualType() == selTy) { 7430d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall SelectorTy = PtrToInt8Ty; 7440d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall } else { 7450d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall SelectorTy = cast<llvm::PointerType>(CGM.getTypes().ConvertType(selTy)); 7460d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall } 747e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner 74896e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson PtrToIntTy = llvm::PointerType::getUnqual(IntTy); 749391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner PtrTy = PtrToInt8Ty; 7501eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 751917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall Int32Ty = llvm::Type::getInt32Ty(VMContext); 752917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall Int64Ty = llvm::Type::getInt64Ty(VMContext); 753917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall 75449de5289acea91c9d224c9aadd4d527e8f9fdaffDavid Chisnall IntPtrTy = 75549de5289acea91c9d224c9aadd4d527e8f9fdaffDavid Chisnall TheModule.getPointerSize() == llvm::Module::Pointer32 ? Int32Ty : Int64Ty; 75649de5289acea91c9d224c9aadd4d527e8f9fdaffDavid Chisnall 757391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner // Object type 7587bcf6c3e098e808282cc96309c02c08ab6229940David Chisnall QualType UnqualIdTy = CGM.getContext().getObjCIdType(); 7597bcf6c3e098e808282cc96309c02c08ab6229940David Chisnall ASTIdTy = CanQualType(); 7607bcf6c3e098e808282cc96309c02c08ab6229940David Chisnall if (UnqualIdTy != QualType()) { 7617bcf6c3e098e808282cc96309c02c08ab6229940David Chisnall ASTIdTy = CGM.getContext().getCanonicalType(UnqualIdTy); 7620d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall IdTy = cast<llvm::PointerType>(CGM.getTypes().ConvertType(ASTIdTy)); 7637bcf6c3e098e808282cc96309c02c08ab6229940David Chisnall } else { 7647bcf6c3e098e808282cc96309c02c08ab6229940David Chisnall IdTy = PtrToInt8Ty; 7650d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall } 766ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall PtrToIdTy = llvm::PointerType::getUnqual(IdTy); 7671eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7687650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner ObjCSuperTy = llvm::StructType::get(IdTy, IdTy, NULL); 769c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall PtrToObjCSuperTy = llvm::PointerType::getUnqual(ObjCSuperTy); 770c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 7719cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::Type *VoidTy = llvm::Type::getVoidTy(VMContext); 7729f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 7739f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // void objc_exception_throw(id); 7749f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall ExceptionThrowFn.init(&CGM, "objc_exception_throw", VoidTy, IdTy, NULL); 7759735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall ExceptionReThrowFn.init(&CGM, "objc_exception_throw", VoidTy, IdTy, NULL); 7769f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // int objc_sync_enter(id); 7779f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SyncEnterFn.init(&CGM, "objc_sync_enter", IntTy, IdTy, NULL); 7789f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // int objc_sync_exit(id); 7799f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SyncExitFn.init(&CGM, "objc_sync_exit", IntTy, IdTy, NULL); 7809f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 7819f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // void objc_enumerationMutation (id) 7829f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall EnumerationMutationFn.init(&CGM, "objc_enumerationMutation", VoidTy, 7839f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall IdTy, NULL); 7849f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 7859f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // id objc_getProperty(id, SEL, ptrdiff_t, BOOL) 7869f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall GetPropertyFn.init(&CGM, "objc_getProperty", IdTy, IdTy, SelectorTy, 7879f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall PtrDiffTy, BoolTy, NULL); 7889f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // void objc_setProperty(id, SEL, ptrdiff_t, id, BOOL, BOOL) 7899f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SetPropertyFn.init(&CGM, "objc_setProperty", VoidTy, IdTy, SelectorTy, 7909f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall PtrDiffTy, IdTy, BoolTy, BoolTy, NULL); 7919f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // void objc_setPropertyStruct(void*, void*, ptrdiff_t, BOOL, BOOL) 7929f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall GetStructPropertyFn.init(&CGM, "objc_getPropertyStruct", VoidTy, PtrTy, PtrTy, 7939f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall PtrDiffTy, BoolTy, BoolTy, NULL); 7949f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // void objc_setPropertyStruct(void*, void*, ptrdiff_t, BOOL, BOOL) 7959f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SetStructPropertyFn.init(&CGM, "objc_setPropertyStruct", VoidTy, PtrTy, PtrTy, 7969f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall PtrDiffTy, BoolTy, BoolTy, NULL); 7979f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 798391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner // IMP type 7999cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::Type *IMPArgs[] = { IdTy, SelectorTy }; 800c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall IMPTy = llvm::PointerType::getUnqual(llvm::FunctionType::get(IdTy, IMPArgs, 801c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall true)); 802ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall 8034e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie const LangOptions &Opts = CGM.getLangOpts(); 804e289d81369914678db386f6aa86faf8f178e245dDouglas Gregor if ((Opts.getGC() != LangOptions::NonGC) || Opts.ObjCAutoRefCount) 805f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall RuntimeVersion = 10; 806f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall 8079735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // Don't bother initialising the GC stuff unless we're compiling in GC mode 808e289d81369914678db386f6aa86faf8f178e245dDouglas Gregor if (Opts.getGC() != LangOptions::NonGC) { 809a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall // This is a bit of an hack. We should sort this out by having a proper 810a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall // CGObjCGNUstep subclass for GC, but we may want to really support the old 811a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall // ABI and GC added in ObjectiveC2.framework, so we fudge it a bit for now 812ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // Get selectors needed in GC mode 813ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall RetainSel = GetNullarySelector("retain", CGM.getContext()); 814ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall ReleaseSel = GetNullarySelector("release", CGM.getContext()); 815ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall AutoreleaseSel = GetNullarySelector("autorelease", CGM.getContext()); 816ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall 817ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // Get functions needed in GC mode 818ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall 819ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // id objc_assign_ivar(id, id, ptrdiff_t); 8209f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall IvarAssignFn.init(&CGM, "objc_assign_ivar", IdTy, IdTy, IdTy, PtrDiffTy, 8219f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall NULL); 822ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // id objc_assign_strongCast (id, id*) 8239f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall StrongCastAssignFn.init(&CGM, "objc_assign_strongCast", IdTy, IdTy, 8249f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall PtrToIdTy, NULL); 825ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // id objc_assign_global(id, id*); 8269f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall GlobalAssignFn.init(&CGM, "objc_assign_global", IdTy, IdTy, PtrToIdTy, 8279f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall NULL); 828ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // id objc_assign_weak(id, id*); 8299f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall WeakAssignFn.init(&CGM, "objc_assign_weak", IdTy, IdTy, PtrToIdTy, NULL); 830ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // id objc_read_weak(id*); 8319f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall WeakReadFn.init(&CGM, "objc_read_weak", IdTy, PtrToIdTy, NULL); 832ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // void *objc_memmove_collectable(void*, void *, size_t); 8339f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall MemMoveFn.init(&CGM, "objc_memmove_collectable", PtrTy, PtrTy, PtrTy, 8349f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SizeTy, NULL); 835ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 83620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 837bb1c8600218b3244340331165fc7cba7bf227655Mike Stump 838c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnallllvm::Value *CGObjCGNU::GetClassNamed(CGBuilderTy &Builder, 839d3fc7296ae95353173bae25ee4dd3ecf4d6dced1David Chisnall const std::string &Name, 840d3fc7296ae95353173bae25ee4dd3ecf4d6dced1David Chisnall bool isWeak) { 841c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall llvm::Value *ClassName = CGM.GetAddrOfConstantCString(Name); 84241d63ed274d1bf7ba7459f218c8f6a385fc5c6d6David Chisnall // With the incompatible ABI, this will need to be replaced with a direct 84341d63ed274d1bf7ba7459f218c8f6a385fc5c6d6David Chisnall // reference to the class symbol. For the compatible nonfragile ABI we are 84441d63ed274d1bf7ba7459f218c8f6a385fc5c6d6David Chisnall // still performing this lookup at run time but emitting the symbol for the 84541d63ed274d1bf7ba7459f218c8f6a385fc5c6d6David Chisnall // class externally so that we can make the switch later. 846c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall // 847c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall // Libobjc2 contains an LLVM pass that replaces calls to objc_lookup_class 848c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall // with memoized versions or with static references if it's safe to do so. 849d3fc7296ae95353173bae25ee4dd3ecf4d6dced1David Chisnall if (!isWeak) 850d3fc7296ae95353173bae25ee4dd3ecf4d6dced1David Chisnall EmitClassRef(Name); 851ddb2a3d55a24a1dbdf9152621642d9a4b4fc2f61Daniel Dunbar ClassName = Builder.CreateStructGEP(ClassName, 0); 852ddb2a3d55a24a1dbdf9152621642d9a4b4fc2f61Daniel Dunbar 85320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ClassLookupFn = 854da549e8995c447542d5631b8b67fcc3a9582797aJay Foad CGM.CreateRuntimeFunction(llvm::FunctionType::get(IdTy, PtrToInt8Ty, true), 85526c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian "objc_lookup_class"); 85620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return Builder.CreateCall(ClassLookupFn, ClassName); 857391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner} 858391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner 859c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall// This has to perform the lookup every time, since posing and related 860c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall// techniques can modify the name -> class mapping. 861c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnallllvm::Value *CGObjCGNU::GetClass(CGBuilderTy &Builder, 862c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall const ObjCInterfaceDecl *OID) { 863d3fc7296ae95353173bae25ee4dd3ecf4d6dced1David Chisnall return GetClassNamed(Builder, OID->getNameAsString(), OID->isWeakImported()); 864c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall} 865c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnallllvm::Value *CGObjCGNU::EmitNSAutoreleasePoolClassRef(CGBuilderTy &Builder) { 866d3fc7296ae95353173bae25ee4dd3ecf4d6dced1David Chisnall return GetClassNamed(Builder, "NSAutoreleasePool", false); 867c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall} 868c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall 86903b2960c14aede6ac82bdef32247094ebb72fa69Fariborz Jahanianllvm::Value *CGObjCGNU::GetSelector(CGBuilderTy &Builder, Selector Sel, 8709f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall const std::string &TypeEncoding, bool lval) { 8719f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 8725f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<TypedSelector, 2> &Types = SelectorTable[Sel]; 8739f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::GlobalAlias *SelValue = 0; 8749f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 8759f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 8765f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner for (SmallVectorImpl<TypedSelector>::iterator i = Types.begin(), 8779f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall e = Types.end() ; i!=e ; i++) { 8789f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall if (i->first == TypeEncoding) { 8799f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SelValue = i->second; 8809f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall break; 8819f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall } 8829f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall } 8839f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall if (0 == SelValue) { 884c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall SelValue = new llvm::GlobalAlias(SelectorTy, 8859f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::GlobalValue::PrivateLinkage, 8869f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall ".objc_selector_"+Sel.getAsString(), NULL, 8879f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall &TheModule); 8889f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Types.push_back(TypedSelector(TypeEncoding, SelValue)); 8899f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall } 8909f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 891c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall if (lval) { 892c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *tmp = Builder.CreateAlloca(SelValue->getType()); 893c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall Builder.CreateStore(SelValue, tmp); 894c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall return tmp; 895c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } 896c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall return SelValue; 8979f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall} 8989f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 8999f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallllvm::Value *CGObjCGNU::GetSelector(CGBuilderTy &Builder, Selector Sel, 9009f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall bool lval) { 9019f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall return GetSelector(Builder, Sel, std::string(), lval); 902df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian} 903df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian 9046d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbarllvm::Value *CGObjCGNU::GetSelector(CGBuilderTy &Builder, const ObjCMethodDecl 905df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian *Method) { 906df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian std::string SelTypes; 907df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian CGM.getContext().getObjCEncodingForMethodDecl(Method, SelTypes); 9089f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall return GetSelector(Builder, Method->getSelector(), SelTypes, false); 9098e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner} 9108e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner 911cf5abc7ba032bd35158e4d75b0bc92a482fc67e8Fariborz Jahanianllvm::Constant *CGObjCGNU::GetEHType(QualType T) { 9124e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!CGM.getLangOpts().CPlusPlus) { 9139735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall if (T->isObjCIdType() 9149735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall || T->isObjCQualifiedIdType()) { 9159735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // With the old ABI, there was only one kind of catchall, which broke 9169735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // foreign exceptions. With the new ABI, we use __objc_id_typeinfo as 9179735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // a pointer indicating object catchalls, and NULL to indicate real 9189735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // catchalls 919260611a32535c851237926bfcf78869b13c07d5bJohn McCall if (CGM.getLangOpts().ObjCRuntime.isNonFragile()) { 9209735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall return MakeConstantString("@id"); 9219735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall } else { 9229735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall return 0; 9239735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall } 9249735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall } 9259735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall 9269735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // All other types should be Objective-C interface pointer types. 9279735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall const ObjCObjectPointerType *OPT = 9289735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall T->getAs<ObjCObjectPointerType>(); 9299735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall assert(OPT && "Invalid @catch type."); 9309735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall const ObjCInterfaceDecl *IDecl = 9319735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall OPT->getObjectType()->getInterface(); 9329735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall assert(IDecl && "Invalid @catch type."); 9339735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall return MakeConstantString(IDecl->getIdentifier()->getName()); 9349735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall } 93580558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall // For Objective-C++, we want to provide the ability to catch both C++ and 93680558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall // Objective-C objects in the same function. 93780558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall 93880558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall // There's a particular fixed type info for 'id'. 93980558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall if (T->isObjCIdType() || 94080558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall T->isObjCQualifiedIdType()) { 94180558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall llvm::Constant *IDEHType = 94280558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall CGM.getModule().getGlobalVariable("__objc_id_type_info"); 94380558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall if (!IDEHType) 94480558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall IDEHType = 94580558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall new llvm::GlobalVariable(CGM.getModule(), PtrToInt8Ty, 94680558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall false, 94780558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall llvm::GlobalValue::ExternalLinkage, 94880558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall 0, "__objc_id_type_info"); 94980558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall return llvm::ConstantExpr::getBitCast(IDEHType, PtrToInt8Ty); 95080558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall } 95180558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall 95280558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall const ObjCObjectPointerType *PT = 95380558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall T->getAs<ObjCObjectPointerType>(); 95480558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall assert(PT && "Invalid @catch type."); 95580558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall const ObjCInterfaceType *IT = PT->getInterfaceType(); 95680558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall assert(IT && "Invalid @catch type."); 95780558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall std::string className = IT->getDecl()->getIdentifier()->getName(); 95880558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall 95980558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall std::string typeinfoName = "__objc_eh_typeinfo_" + className; 96080558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall 96180558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall // Return the existing typeinfo if it exists 96280558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall llvm::Constant *typeinfo = TheModule.getGlobalVariable(typeinfoName); 963acd76fe8e1b1b3fd83dac66848041629a8b06e8aDavid Chisnall if (typeinfo) 964acd76fe8e1b1b3fd83dac66848041629a8b06e8aDavid Chisnall return llvm::ConstantExpr::getBitCast(typeinfo, PtrToInt8Ty); 96580558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall 96680558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall // Otherwise create it. 96780558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall 96880558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall // vtable for gnustep::libobjc::__objc_class_type_info 96980558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall // It's quite ugly hard-coding this. Ideally we'd generate it using the host 97080558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall // platform's name mangling. 97180558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall const char *vtableName = "_ZTVN7gnustep7libobjc22__objc_class_type_infoE"; 97280558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall llvm::Constant *Vtable = TheModule.getGlobalVariable(vtableName); 97380558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall if (!Vtable) { 97480558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall Vtable = new llvm::GlobalVariable(TheModule, PtrToInt8Ty, true, 97580558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall llvm::GlobalValue::ExternalLinkage, 0, vtableName); 97680558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall } 97780558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall llvm::Constant *Two = llvm::ConstantInt::get(IntTy, 2); 978a5c04344fa70d6eec34344760c1fe511e16f2d76Jay Foad Vtable = llvm::ConstantExpr::getGetElementPtr(Vtable, Two); 97980558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall Vtable = llvm::ConstantExpr::getBitCast(Vtable, PtrToInt8Ty); 98080558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall 98180558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall llvm::Constant *typeName = 98280558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall ExportUniqueString(className, "__objc_eh_typename_"); 98380558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall 98480558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall std::vector<llvm::Constant*> fields; 98580558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall fields.push_back(Vtable); 98680558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall fields.push_back(typeName); 98780558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall llvm::Constant *TI = 9887650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner MakeGlobal(llvm::StructType::get(PtrToInt8Ty, PtrToInt8Ty, 98980558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall NULL), fields, "__objc_eh_typeinfo_" + className, 99080558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall llvm::GlobalValue::LinkOnceODRLinkage); 99180558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall return llvm::ConstantExpr::getBitCast(TI, PtrToInt8Ty); 9925a180397870944548aaadeaebf58e415885b9489John McCall} 9935a180397870944548aaadeaebf58e415885b9489John McCall 99420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// Generate an NSConstantString object. 9950d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnallllvm::Constant *CGObjCGNU::GenerateConstantString(const StringLiteral *SL) { 99648272a078e54d501cb05edd797c54b8e82ceb520David Chisnall 9972f4eaef37476ae6891ede8ba215d0f6fd093629bBenjamin Kramer std::string Str = SL->getString().str(); 9980d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall 99948272a078e54d501cb05edd797c54b8e82ceb520David Chisnall // Look for an existing one 100048272a078e54d501cb05edd797c54b8e82ceb520David Chisnall llvm::StringMap<llvm::Constant*>::iterator old = ObjCStrings.find(Str); 100148272a078e54d501cb05edd797c54b8e82ceb520David Chisnall if (old != ObjCStrings.end()) 100248272a078e54d501cb05edd797c54b8e82ceb520David Chisnall return old->getValue(); 100348272a078e54d501cb05edd797c54b8e82ceb520David Chisnall 10044e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie StringRef StringClass = CGM.getLangOpts().ObjCConstantStringClass; 100513df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall 100613df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall if (StringClass.empty()) StringClass = "NXConstantString"; 100713df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall 100813df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall std::string Sym = "_OBJC_CLASS_"; 100913df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall Sym += StringClass; 101013df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall 101113df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall llvm::Constant *isa = TheModule.getNamedGlobal(Sym); 101213df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall 101313df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall if (!isa) 101413df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall isa = new llvm::GlobalVariable(TheModule, IdTy, /* isConstant */false, 101513df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall llvm::GlobalValue::ExternalWeakLinkage, 0, Sym); 101613df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall else if (isa->getType() != PtrToIdTy) 101713df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall isa = llvm::ConstantExpr::getBitCast(isa, PtrToIdTy); 101813df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall 101920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Ivars; 102013df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall Ivars.push_back(isa); 102113fd7e5111032f54b538dd66d035b0ccc1f82467Chris Lattner Ivars.push_back(MakeConstantString(Str)); 10224a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Ivars.push_back(llvm::ConstantInt::get(IntTy, Str.size())); 102320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ObjCStr = MakeGlobal( 102413df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall llvm::StructType::get(PtrToIdTy, PtrToInt8Ty, IntTy, NULL), 102520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Ivars, ".objc_str"); 102648272a078e54d501cb05edd797c54b8e82ceb520David Chisnall ObjCStr = llvm::ConstantExpr::getBitCast(ObjCStr, PtrToInt8Ty); 102748272a078e54d501cb05edd797c54b8e82ceb520David Chisnall ObjCStrings[Str] = ObjCStr; 102848272a078e54d501cb05edd797c54b8e82ceb520David Chisnall ConstantStrings.push_back(ObjCStr); 102920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return ObjCStr; 103020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 103120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 103220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov///Generates a message send where the super is the receiver. This is a message 103320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov///send to self with special delivery semantics indicating which class's method 103420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov///should be called. 10359f6614e3c5d34998dd5a5cc6faf0746dcd611d49David ChisnallRValue 10369f6614e3c5d34998dd5a5cc6faf0746dcd611d49David ChisnallCGObjCGNU::GenerateMessageSendSuper(CodeGenFunction &CGF, 1037ef072fd2f3347cfd857d6eb787b245b950771430John McCall ReturnValueSlot Return, 10387f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar QualType ResultType, 10397f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar Selector Sel, 1040f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar const ObjCInterfaceDecl *Class, 10417ce77920a35060f1c8dd72e541e42ce296ccd168Fariborz Jahanian bool isCategoryImpl, 1042f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar llvm::Value *Receiver, 104319cd87eb5fb3c197e631ce08fd52c446c4d4e8f1Daniel Dunbar bool IsClassMessage, 1044d6c93d703541c992e06eb9a59a2d826a30da65b2Daniel Dunbar const CallArgList &CallArgs, 1045d6c93d703541c992e06eb9a59a2d826a30da65b2Daniel Dunbar const ObjCMethodDecl *Method) { 10460bbe0cfd374d0e564c4570b5e84a77f886c32d52David Chisnall CGBuilderTy &Builder = CGF.Builder; 10474e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (CGM.getLangOpts().getGC() == LangOptions::GCOnly) { 1048ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall if (Sel == RetainSel || Sel == AutoreleaseSel) { 10490bbe0cfd374d0e564c4570b5e84a77f886c32d52David Chisnall return RValue::get(EnforceType(Builder, Receiver, 10500bbe0cfd374d0e564c4570b5e84a77f886c32d52David Chisnall CGM.getTypes().ConvertType(ResultType))); 1051ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 1052ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall if (Sel == ReleaseSel) { 1053ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall return RValue::get(0); 1054ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 1055ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 1056db831948f32217ece8410099f9982ef900c3b3c3David Chisnall 1057db831948f32217ece8410099f9982ef900c3b3c3David Chisnall llvm::Value *cmd = GetSelector(Builder, Sel); 1058db831948f32217ece8410099f9982ef900c3b3c3David Chisnall 1059b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 1060b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CallArgList ActualArgs; 1061b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 106204c9a49ee251424b11d7c4e8b1c23637684cecb6Eli Friedman ActualArgs.add(RValue::get(EnforceType(Builder, Receiver, IdTy)), ASTIdTy); 106304c9a49ee251424b11d7c4e8b1c23637684cecb6Eli Friedman ActualArgs.add(RValue::get(cmd), CGF.getContext().getObjCSelType()); 1064f85e193739c953358c865005855253af4f68a497John McCall ActualArgs.addFrom(CallArgs); 1065b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 1066de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall MessageSendInfo MSI = getMessageSendInfo(Method, ResultType, ActualArgs); 1067b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 10685efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar llvm::Value *ReceiverClass = 0; 106948e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (isCategoryImpl) { 107048e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner llvm::Constant *classLookupFunction = 0; 107148e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (IsClassMessage) { 107296e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson classLookupFunction = CGM.CreateRuntimeFunction(llvm::FunctionType::get( 1073da549e8995c447542d5631b8b67fcc3a9582797aJay Foad IdTy, PtrTy, true), "objc_get_meta_class"); 107448e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner } else { 107596e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson classLookupFunction = CGM.CreateRuntimeFunction(llvm::FunctionType::get( 1076da549e8995c447542d5631b8b67fcc3a9582797aJay Foad IdTy, PtrTy, true), "objc_get_class"); 10775efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } 1078db831948f32217ece8410099f9982ef900c3b3c3David Chisnall ReceiverClass = Builder.CreateCall(classLookupFunction, 107948e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner MakeConstantString(Class->getNameAsString())); 10805efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } else { 108148e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner // Set up global aliases for the metaclass or class pointer if they do not 108248e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner // already exist. These will are forward-references which will be set to 1083bb1c8600218b3244340331165fc7cba7bf227655Mike Stump // pointers to the class and metaclass structure created for the runtime 1084bb1c8600218b3244340331165fc7cba7bf227655Mike Stump // load function. To send a message to super, we look up the value of the 108548e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner // super_class pointer from either the class or metaclass structure. 108648e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (IsClassMessage) { 108748e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (!MetaClassPtrAlias) { 108848e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner MetaClassPtrAlias = new llvm::GlobalAlias(IdTy, 108948e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner llvm::GlobalValue::InternalLinkage, ".objc_metaclass_ref" + 109048e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner Class->getNameAsString(), NULL, &TheModule); 109148e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner } 109248e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner ReceiverClass = MetaClassPtrAlias; 109348e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner } else { 109448e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (!ClassPtrAlias) { 109548e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner ClassPtrAlias = new llvm::GlobalAlias(IdTy, 109648e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner llvm::GlobalValue::InternalLinkage, ".objc_class_ref" + 109748e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner Class->getNameAsString(), NULL, &TheModule); 109848e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner } 109948e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner ReceiverClass = ClassPtrAlias; 11005efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } 110171238f67c5df13eef19450d66b7a7ab28377192aChris Lattner } 11025efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar // Cast the pointer to a simplified version of the class structure 1103db831948f32217ece8410099f9982ef900c3b3c3David Chisnall ReceiverClass = Builder.CreateBitCast(ReceiverClass, 110496e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual( 11057650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType::get(IdTy, IdTy, NULL))); 11065efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar // Get the superclass pointer 1107db831948f32217ece8410099f9982ef900c3b3c3David Chisnall ReceiverClass = Builder.CreateStructGEP(ReceiverClass, 1); 11085efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar // Load the superclass pointer 1109db831948f32217ece8410099f9982ef900c3b3c3David Chisnall ReceiverClass = Builder.CreateLoad(ReceiverClass); 111020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Construct the structure used to look up the IMP 11117650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *ObjCSuperTy = llvm::StructType::get( 111247a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson Receiver->getType(), IdTy, NULL); 1113db831948f32217ece8410099f9982ef900c3b3c3David Chisnall llvm::Value *ObjCSuper = Builder.CreateAlloca(ObjCSuperTy); 1114b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 1115db831948f32217ece8410099f9982ef900c3b3c3David Chisnall Builder.CreateStore(Receiver, Builder.CreateStructGEP(ObjCSuper, 0)); 1116db831948f32217ece8410099f9982ef900c3b3c3David Chisnall Builder.CreateStore(ReceiverClass, Builder.CreateStructGEP(ObjCSuper, 1)); 111720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 1118c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall ObjCSuper = EnforceType(Builder, ObjCSuper, PtrToObjCSuperTy); 1119db831948f32217ece8410099f9982ef900c3b3c3David Chisnall 1120c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // Get the IMP 1121c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *imp = LookupIMPSuper(CGF, ObjCSuper, cmd); 1122de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall imp = EnforceType(Builder, imp, MSI.MessengerType); 112320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 1124dd5c98f709837e5dd3da08d44d1ce407975df2cfDavid Chisnall llvm::Value *impMD[] = { 1125dd5c98f709837e5dd3da08d44d1ce407975df2cfDavid Chisnall llvm::MDString::get(VMContext, Sel.getAsString()), 1126dd5c98f709837e5dd3da08d44d1ce407975df2cfDavid Chisnall llvm::MDString::get(VMContext, Class->getSuperClass()->getNameAsString()), 1127dd5c98f709837e5dd3da08d44d1ce407975df2cfDavid Chisnall llvm::ConstantInt::get(llvm::Type::getInt1Ty(VMContext), IsClassMessage) 1128dd5c98f709837e5dd3da08d44d1ce407975df2cfDavid Chisnall }; 11296f141659cab11109d9931d92d0988f8850778de3Jay Foad llvm::MDNode *node = llvm::MDNode::get(VMContext, impMD); 1130dd5c98f709837e5dd3da08d44d1ce407975df2cfDavid Chisnall 11314b02afcb45cd1a384de7d45f440a8be091dd500bDavid Chisnall llvm::Instruction *call; 1132de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall RValue msgRet = CGF.EmitCall(MSI.CallInfo, imp, Return, ActualArgs, 0, &call); 11334b02afcb45cd1a384de7d45f440a8be091dd500bDavid Chisnall call->setMetadata(msgSendMDKind, node); 11344b02afcb45cd1a384de7d45f440a8be091dd500bDavid Chisnall return msgRet; 113520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 113620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 11371eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// Generate code for a message send expression. 11389f6614e3c5d34998dd5a5cc6faf0746dcd611d49David ChisnallRValue 11399f6614e3c5d34998dd5a5cc6faf0746dcd611d49David ChisnallCGObjCGNU::GenerateMessageSend(CodeGenFunction &CGF, 1140ef072fd2f3347cfd857d6eb787b245b950771430John McCall ReturnValueSlot Return, 11417f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar QualType ResultType, 11427f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar Selector Sel, 1143f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar llvm::Value *Receiver, 1144df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian const CallArgList &CallArgs, 1145c6cd5fd3eae71f8841504a396563343cfaaf503eDavid Chisnall const ObjCInterfaceDecl *Class, 1146df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian const ObjCMethodDecl *Method) { 11470bbe0cfd374d0e564c4570b5e84a77f886c32d52David Chisnall CGBuilderTy &Builder = CGF.Builder; 11480bbe0cfd374d0e564c4570b5e84a77f886c32d52David Chisnall 1149664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // Strip out message sends to retain / release in GC mode 11504e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (CGM.getLangOpts().getGC() == LangOptions::GCOnly) { 1151ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall if (Sel == RetainSel || Sel == AutoreleaseSel) { 11520bbe0cfd374d0e564c4570b5e84a77f886c32d52David Chisnall return RValue::get(EnforceType(Builder, Receiver, 11530bbe0cfd374d0e564c4570b5e84a77f886c32d52David Chisnall CGM.getTypes().ConvertType(ResultType))); 1154ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 1155ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall if (Sel == ReleaseSel) { 1156ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall return RValue::get(0); 1157ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 1158ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 1159664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall 1160664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // If the return type is something that goes in an integer register, the 1161664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // runtime will handle 0 returns. For other cases, we fill in the 0 value 1162664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // ourselves. 1163664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // 1164664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // The language spec says the result of this kind of message send is 1165664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // undefined, but lots of people seem to have forgotten to read that 1166664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // paragraph and insist on sending messages to nil that have structure 1167664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // returns. With GCC, this generates a random return value (whatever happens 1168664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // to be on the stack / in those registers at the time) on most platforms, 1169c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // and generates an illegal instruction trap on SPARC. With LLVM it corrupts 1170c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // the stack. 1171c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall bool isPointerSizedReturn = (ResultType->isAnyPointerType() || 1172c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall ResultType->isIntegralOrEnumerationType() || ResultType->isVoidType()); 1173664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall 1174664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::BasicBlock *startBB = 0; 1175664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::BasicBlock *messageBB = 0; 1176a54da05098aff1ca992f5292f3f6a39ec3cef31eDavid Chisnall llvm::BasicBlock *continueBB = 0; 1177664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall 1178664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall if (!isPointerSizedReturn) { 1179664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall startBB = Builder.GetInsertBlock(); 1180664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall messageBB = CGF.createBasicBlock("msgSend"); 1181a54da05098aff1ca992f5292f3f6a39ec3cef31eDavid Chisnall continueBB = CGF.createBasicBlock("continue"); 1182664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall 1183664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::Value *isNil = Builder.CreateICmpEQ(Receiver, 1184664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::Constant::getNullValue(Receiver->getType())); 1185a54da05098aff1ca992f5292f3f6a39ec3cef31eDavid Chisnall Builder.CreateCondBr(isNil, continueBB, messageBB); 1186664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall CGF.EmitBlock(messageBB); 1187664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall } 1188664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall 11890f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall IdTy = cast<llvm::PointerType>(CGM.getTypes().ConvertType(ASTIdTy)); 1190df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian llvm::Value *cmd; 1191df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian if (Method) 1192d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian cmd = GetSelector(Builder, Method); 1193df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian else 1194d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian cmd = GetSelector(Builder, Sel); 1195c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall cmd = EnforceType(Builder, cmd, SelectorTy); 1196c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall Receiver = EnforceType(Builder, Receiver, IdTy); 1197c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 1198c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *impMD[] = { 1199c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::MDString::get(VMContext, Sel.getAsString()), 1200c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::MDString::get(VMContext, Class ? Class->getNameAsString() :""), 1201c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::ConstantInt::get(llvm::Type::getInt1Ty(VMContext), Class!=0) 1202c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall }; 12036f141659cab11109d9931d92d0988f8850778de3Jay Foad llvm::MDNode *node = llvm::MDNode::get(VMContext, impMD); 1204b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 1205c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall CallArgList ActualArgs; 120604c9a49ee251424b11d7c4e8b1c23637684cecb6Eli Friedman ActualArgs.add(RValue::get(Receiver), ASTIdTy); 120704c9a49ee251424b11d7c4e8b1c23637684cecb6Eli Friedman ActualArgs.add(RValue::get(cmd), CGF.getContext().getObjCSelType()); 1208f85e193739c953358c865005855253af4f68a497John McCall ActualArgs.addFrom(CallArgs); 1209de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall 1210de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall MessageSendInfo MSI = getMessageSendInfo(Method, ResultType, ActualArgs); 1211de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall 121289c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall // Get the IMP to call 121389c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall llvm::Value *imp; 121489c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall 121589c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall // If we have non-legacy dispatch specified, we try using the objc_msgSend() 121689c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall // functions. These are not supported on all platforms (or all runtimes on a 121789c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall // given platform), so we 121889c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall switch (CGM.getCodeGenOpts().getObjCDispatchMethod()) { 121989c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall case CodeGenOptions::Legacy: 122089c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall imp = LookupIMP(CGF, Receiver, cmd, node); 122189c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall break; 122289c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall case CodeGenOptions::Mixed: 122389c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall case CodeGenOptions::NonLegacy: 12246f3887ec3652482d2e0e8959d8a89b785330b0b2David Chisnall if (CGM.ReturnTypeUsesFPRet(ResultType)) { 12256f3887ec3652482d2e0e8959d8a89b785330b0b2David Chisnall imp = CGM.CreateRuntimeFunction(llvm::FunctionType::get(IdTy, IdTy, true), 12266f3887ec3652482d2e0e8959d8a89b785330b0b2David Chisnall "objc_msgSend_fpret"); 1227de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall } else if (CGM.ReturnTypeUsesSRet(MSI.CallInfo)) { 122889c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall // The actual types here don't matter - we're going to bitcast the 122989c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall // function anyway 123089c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall imp = CGM.CreateRuntimeFunction(llvm::FunctionType::get(IdTy, IdTy, true), 123189c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall "objc_msgSend_stret"); 123289c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall } else { 123389c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall imp = CGM.CreateRuntimeFunction(llvm::FunctionType::get(IdTy, IdTy, true), 123489c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall "objc_msgSend"); 123589c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall } 123689c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall } 123789c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall 1238403bc3f85f3b3461b73abdd9c632980bf95f34bdDavid Chisnall // Reset the receiver in case the lookup modified it 1239403bc3f85f3b3461b73abdd9c632980bf95f34bdDavid Chisnall ActualArgs[0] = CallArg(RValue::get(Receiver), ASTIdTy, false); 124089c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall 1241de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall imp = EnforceType(Builder, imp, MSI.MessengerType); 124263e742bed90aab2e8e778e48fbbd4bce766b4373David Chisnall 12434b02afcb45cd1a384de7d45f440a8be091dd500bDavid Chisnall llvm::Instruction *call; 1244de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall RValue msgRet = CGF.EmitCall(MSI.CallInfo, imp, Return, ActualArgs, 12454b02afcb45cd1a384de7d45f440a8be091dd500bDavid Chisnall 0, &call); 12464b02afcb45cd1a384de7d45f440a8be091dd500bDavid Chisnall call->setMetadata(msgSendMDKind, node); 1247664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall 1248a54da05098aff1ca992f5292f3f6a39ec3cef31eDavid Chisnall 1249664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall if (!isPointerSizedReturn) { 1250a54da05098aff1ca992f5292f3f6a39ec3cef31eDavid Chisnall messageBB = CGF.Builder.GetInsertBlock(); 1251a54da05098aff1ca992f5292f3f6a39ec3cef31eDavid Chisnall CGF.Builder.CreateBr(continueBB); 1252a54da05098aff1ca992f5292f3f6a39ec3cef31eDavid Chisnall CGF.EmitBlock(continueBB); 1253664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall if (msgRet.isScalar()) { 1254664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::Value *v = msgRet.getScalarVal(); 1255bbf3bacb3e0c1ebb3e8a4a8b1330404a7e379315Jay Foad llvm::PHINode *phi = Builder.CreatePHI(v->getType(), 2); 1256664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi->addIncoming(v, messageBB); 1257664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi->addIncoming(llvm::Constant::getNullValue(v->getType()), startBB); 1258664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall msgRet = RValue::get(phi); 1259664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall } else if (msgRet.isAggregate()) { 1260664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::Value *v = msgRet.getAggregateAddr(); 1261bbf3bacb3e0c1ebb3e8a4a8b1330404a7e379315Jay Foad llvm::PHINode *phi = Builder.CreatePHI(v->getType(), 2); 12622acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::PointerType *RetTy = cast<llvm::PointerType>(v->getType()); 1263866163bf6c66211a9b4d5ba160ac02de04ce4be6David Chisnall llvm::AllocaInst *NullVal = 1264866163bf6c66211a9b4d5ba160ac02de04ce4be6David Chisnall CGF.CreateTempAlloca(RetTy->getElementType(), "null"); 1265664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall CGF.InitTempAlloca(NullVal, 1266664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::Constant::getNullValue(RetTy->getElementType())); 1267664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi->addIncoming(v, messageBB); 1268664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi->addIncoming(NullVal, startBB); 1269664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall msgRet = RValue::getAggregate(phi); 1270664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall } else /* isComplex() */ { 1271664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall std::pair<llvm::Value*,llvm::Value*> v = msgRet.getComplexVal(); 1272bbf3bacb3e0c1ebb3e8a4a8b1330404a7e379315Jay Foad llvm::PHINode *phi = Builder.CreatePHI(v.first->getType(), 2); 1273664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi->addIncoming(v.first, messageBB); 1274664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi->addIncoming(llvm::Constant::getNullValue(v.first->getType()), 1275664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall startBB); 1276bbf3bacb3e0c1ebb3e8a4a8b1330404a7e379315Jay Foad llvm::PHINode *phi2 = Builder.CreatePHI(v.second->getType(), 2); 1277664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi2->addIncoming(v.second, messageBB); 1278664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi2->addIncoming(llvm::Constant::getNullValue(v.second->getType()), 1279664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall startBB); 1280664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall msgRet = RValue::getComplex(phi, phi2); 1281664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall } 1282664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall } 1283664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall return msgRet; 128420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 128520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 12861eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// Generates a MethodList. Used in construction of a objc_class and 128720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// objc_category structures. 1288795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendlingllvm::Constant *CGObjCGNU:: 1289795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill WendlingGenerateMethodList(const StringRef &ClassName, 1290795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling const StringRef &CategoryName, 1291795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling ArrayRef<Selector> MethodSels, 1292795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling ArrayRef<llvm::Constant *> MethodTypes, 1293795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling bool isClassMethodList) { 12940f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall if (MethodSels.empty()) 12950f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall return NULLPtr; 12961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Get the method structure type. 12977650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *ObjCMethodTy = llvm::StructType::get( 129820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // Really a selector, but the runtime creates it us. 129920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // Method types 1300c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall IMPTy, //Method pointer 130120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 130220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Methods; 130320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 130420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (unsigned int i = 0, e = MethodTypes.size(); i < e; ++i) { 130520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 13069f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::Constant *Method = 130720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov TheModule.getFunction(SymbolNameForMethod(ClassName, CategoryName, 13089f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall MethodSels[i], 13099f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall isClassMethodList)); 13109f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall assert(Method && "Can't generate metadata for method that doesn't exist"); 13119f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::Constant *C = MakeConstantString(MethodSels[i].getAsString()); 13129f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Elements.push_back(C); 13139f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Elements.push_back(MethodTypes[i]); 13149f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Method = llvm::ConstantExpr::getBitCast(Method, 1315c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall IMPTy); 13169f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Elements.push_back(Method); 13179f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Methods.push_back(llvm::ConstantStruct::get(ObjCMethodTy, Elements)); 131820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 131920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 132020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Array of method structures 132196e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *ObjCMethodArrayTy = llvm::ArrayType::get(ObjCMethodTy, 13221e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian Methods.size()); 13237db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson llvm::Constant *MethodArray = llvm::ConstantArray::get(ObjCMethodArrayTy, 1324fba676396703e87a5034e5f308aa30a633468f66Chris Lattner Methods); 132520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 132620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Structure containing list pointer, array and array count 1327c1c20114a401e503c07d68c47e0728bb063f35c8Chris Lattner llvm::StructType *ObjCMethodListTy = llvm::StructType::create(VMContext); 13289cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::Type *NextPtrTy = llvm::PointerType::getUnqual(ObjCMethodListTy); 13299cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner ObjCMethodListTy->setBody( 13301eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump NextPtrTy, 13311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump IntTy, 133220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ObjCMethodArrayTy, 133320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 133420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 133520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.clear(); 133603e205031b08669f05c41eed5b896fc94c4a12bbOwen Anderson Methods.push_back(llvm::ConstantPointerNull::get( 133796e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(ObjCMethodListTy))); 1338917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall Methods.push_back(llvm::ConstantInt::get(Int32Ty, MethodTypes.size())); 133920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.push_back(MethodArray); 13401eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 134120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an instance of the structure 134220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ObjCMethodListTy, Methods, ".objc_method_list"); 134320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 134420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 134520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// Generates an IvarList. Used in construction of a objc_class. 1346795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendlingllvm::Constant *CGObjCGNU:: 1347795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill WendlingGenerateIvarList(ArrayRef<llvm::Constant *> IvarNames, 1348795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling ArrayRef<llvm::Constant *> IvarTypes, 1349795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling ArrayRef<llvm::Constant *> IvarOffsets) { 13501804463ee790ac3cc73f72597ccb38b983f7d263David Chisnall if (IvarNames.size() == 0) 13511804463ee790ac3cc73f72597ccb38b983f7d263David Chisnall return NULLPtr; 13521eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Get the method structure type. 13537650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *ObjCIvarTy = llvm::StructType::get( 135420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 135520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 135620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IntTy, 135720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 135820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Ivars; 135920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 136020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (unsigned int i = 0, e = IvarNames.size() ; i < e ; i++) { 136120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 13628a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall Elements.push_back(IvarNames[i]); 13638a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall Elements.push_back(IvarTypes[i]); 136420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(IvarOffsets[i]); 136508e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson Ivars.push_back(llvm::ConstantStruct::get(ObjCIvarTy, Elements)); 136620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 136720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 136820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Array of method structures 136996e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *ObjCIvarArrayTy = llvm::ArrayType::get(ObjCIvarTy, 137020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IvarNames.size()); 137120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 13721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 137320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 13744a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Elements.push_back(llvm::ConstantInt::get(IntTy, (int)IvarNames.size())); 13757db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson Elements.push_back(llvm::ConstantArray::get(ObjCIvarArrayTy, Ivars)); 137620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Structure containing array and array count 13777650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *ObjCIvarListTy = llvm::StructType::get(IntTy, 137820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ObjCIvarArrayTy, 137920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 138020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 138120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an instance of the structure 138220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ObjCIvarListTy, Elements, ".objc_ivar_list"); 13830f984268b05edab2cc555a427c441baa9c252658Chris Lattner} 13840f984268b05edab2cc555a427c441baa9c252658Chris Lattner 138520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// Generate a class structure 138620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::GenerateClassStructure( 138720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MetaClass, 138820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SuperClass, 138920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov unsigned info, 1390d002cc6fc5b72bf00e3b7b4571ccf0f23c789b4bChris Lattner const char *Name, 139120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Version, 139220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *InstanceSize, 139320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *IVars, 139420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Methods, 1395d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *Protocols, 1396d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *IvarOffsets, 13978c757f9ea33dccff4da7810e0c1bda59c19ddc9aDavid Chisnall llvm::Constant *Properties, 1398917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::Constant *StrongIvarBitmap, 1399917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::Constant *WeakIvarBitmap, 14008c757f9ea33dccff4da7810e0c1bda59c19ddc9aDavid Chisnall bool isMeta) { 140120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Set up the class structure 140220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Note: Several of these are char*s when they should be ids. This is 140320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // because the runtime performs this translation on load. 1404d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // 1405d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Fields marked New ABI are part of the GNUstep runtime. We emit them 1406d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // anyway; the classes will still work with the GNU runtime, they will just 1407d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // be ignored. 14087650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *ClassTy = llvm::StructType::get( 140913df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall PtrToInt8Ty, // isa 141020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // super_class 141120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // name 141220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov LongTy, // version 141320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov LongTy, // info 141420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov LongTy, // instance_size 141520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IVars->getType(), // ivars 141620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods->getType(), // methods 14171eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // These are all filled in by the runtime, so we pretend 141820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // dtable 141920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // subclass_list 142020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // sibling_class 142120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // protocols 142220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // gc_object_type 1423d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // New ABI: 1424d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian LongTy, // abi_version 1425d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian IvarOffsets->getType(), // ivar_offsets 1426d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Properties->getType(), // properties 14279d06ba82d8afb1cf01235f38f350ce5ad0c15444David Chisnall IntPtrTy, // strong_pointers 14289d06ba82d8afb1cf01235f38f350ce5ad0c15444David Chisnall IntPtrTy, // weak_pointers 142920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 14304a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson llvm::Constant *Zero = llvm::ConstantInt::get(LongTy, 0); 143120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Fill in the structure 143220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 14333c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getBitCast(MetaClass, PtrToInt8Ty)); 143420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(SuperClass); 1435d002cc6fc5b72bf00e3b7b4571ccf0f23c789b4bChris Lattner Elements.push_back(MakeConstantString(Name, ".class_name")); 143620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(Zero); 14374a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Elements.push_back(llvm::ConstantInt::get(LongTy, info)); 143805f3a507bb53ed2bd5573d551a26654a604187ebDavid Chisnall if (isMeta) { 143905f3a507bb53ed2bd5573d551a26654a604187ebDavid Chisnall llvm::TargetData td(&TheModule); 1440e0afc892e75f526f7ecce7dd152d946337632efeKen Dyck Elements.push_back( 1441e0afc892e75f526f7ecce7dd152d946337632efeKen Dyck llvm::ConstantInt::get(LongTy, 1442e0afc892e75f526f7ecce7dd152d946337632efeKen Dyck td.getTypeSizeInBits(ClassTy) / 1443e0afc892e75f526f7ecce7dd152d946337632efeKen Dyck CGM.getContext().getCharWidth())); 144405f3a507bb53ed2bd5573d551a26654a604187ebDavid Chisnall } else 144505f3a507bb53ed2bd5573d551a26654a604187ebDavid Chisnall Elements.push_back(InstanceSize); 144620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(IVars); 144720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(Methods); 1448d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(NULLPtr); 1449d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(NULLPtr); 1450d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(NULLPtr); 14513c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getBitCast(Protocols, PtrTy)); 1452d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(NULLPtr); 1453917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall Elements.push_back(llvm::ConstantInt::get(LongTy, 1)); 1454d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(IvarOffsets); 1455d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(Properties); 1456917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall Elements.push_back(StrongIvarBitmap); 1457917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall Elements.push_back(WeakIvarBitmap); 145820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an instance of the structure 145941d63ed274d1bf7ba7459f218c8f6a385fc5c6d6David Chisnall // This is now an externally visible symbol, so that we can speed up class 146013df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall // messages in the next ABI. We may already have some weak references to 146113df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall // this, so check and fix them properly. 146213df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall std::string ClassSym((isMeta ? "_OBJC_METACLASS_": "_OBJC_CLASS_") + 146313df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall std::string(Name)); 146413df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall llvm::GlobalVariable *ClassRef = TheModule.getNamedGlobal(ClassSym); 146513df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall llvm::Constant *Class = MakeGlobal(ClassTy, Elements, ClassSym, 146613df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall llvm::GlobalValue::ExternalLinkage); 146713df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall if (ClassRef) { 146813df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall ClassRef->replaceAllUsesWith(llvm::ConstantExpr::getBitCast(Class, 146913df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall ClassRef->getType())); 147013df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall ClassRef->removeFromParent(); 147113df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall Class->setName(ClassSym); 147213df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall } 147313df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall return Class; 147420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 147520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 1476795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendlingllvm::Constant *CGObjCGNU:: 1477795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill WendlingGenerateProtocolMethodList(ArrayRef<llvm::Constant *> MethodNames, 1478795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling ArrayRef<llvm::Constant *> MethodTypes) { 14791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Get the method structure type. 14807650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *ObjCMethodDescTy = llvm::StructType::get( 148120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // Really a selector, but the runtime does the casting for us. 148220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 148320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 148420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Methods; 148520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 148620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (unsigned int i = 0, e = MethodTypes.size() ; i < e ; i++) { 148720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 14881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Elements.push_back(MethodNames[i]); 14898a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall Elements.push_back(MethodTypes[i]); 149008e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson Methods.push_back(llvm::ConstantStruct::get(ObjCMethodDescTy, Elements)); 149120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 149296e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *ObjCMethodArrayTy = llvm::ArrayType::get(ObjCMethodDescTy, 149320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov MethodNames.size()); 14947db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson llvm::Constant *Array = llvm::ConstantArray::get(ObjCMethodArrayTy, 1495bb1c8600218b3244340331165fc7cba7bf227655Mike Stump Methods); 14967650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *ObjCMethodDescListTy = llvm::StructType::get( 149720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IntTy, ObjCMethodArrayTy, NULL); 149820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.clear(); 14994a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Methods.push_back(llvm::ConstantInt::get(IntTy, MethodNames.size())); 150020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.push_back(Array); 150120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ObjCMethodDescListTy, Methods, ".objc_method_list"); 150220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 1503bb1c8600218b3244340331165fc7cba7bf227655Mike Stump 150420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// Create the protocol list structure used in classes, categories and so on 1505795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendlingllvm::Constant *CGObjCGNU::GenerateProtocolList(ArrayRef<std::string>Protocols){ 150696e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *ProtocolArrayTy = llvm::ArrayType::get(PtrToInt8Ty, 150720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Protocols.size()); 15087650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *ProtocolListTy = llvm::StructType::get( 150920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, //Should be a recurisve pointer, but it's always NULL here. 15108fac25d33b13e25f512dd921d4d5a4b565f5d175David Chisnall SizeTy, 151120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ProtocolArrayTy, 151220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 15131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump std::vector<llvm::Constant*> Elements; 151420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (const std::string *iter = Protocols.begin(), *endIter = Protocols.end(); 151520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter != endIter ; iter++) { 1516ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall llvm::Constant *protocol = 0; 1517ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall llvm::StringMap<llvm::Constant*>::iterator value = 1518ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall ExistingProtocols.find(*iter); 1519ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall if (value == ExistingProtocols.end()) { 1520f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian protocol = GenerateEmptyProtocol(*iter); 1521ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall } else { 1522ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall protocol = value->getValue(); 1523ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall } 15243c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::Constant *Ptr = llvm::ConstantExpr::getBitCast(protocol, 1525a1cf15f4680e5cf39e72e28c5ea854fcba792e84Owen Anderson PtrToInt8Ty); 152620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(Ptr); 152720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 15287db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson llvm::Constant * ProtocolArray = llvm::ConstantArray::get(ProtocolArrayTy, 152920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements); 153020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 153120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 15324a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Elements.push_back(llvm::ConstantInt::get(LongTy, Protocols.size())); 153320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ProtocolArray); 153420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ProtocolListTy, Elements, ".objc_protocol_list"); 153520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 153620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 15371eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumpllvm::Value *CGObjCGNU::GenerateProtocolRef(CGBuilderTy &Builder, 1538af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar const ObjCProtocolDecl *PD) { 1539f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::Value *protocol = ExistingProtocols[PD->getNameAsString()]; 15402acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Type *T = 1541f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian CGM.getTypes().ConvertType(CGM.getContext().getObjCProtoType()); 154296e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson return Builder.CreateBitCast(protocol, llvm::PointerType::getUnqual(T)); 1543f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian} 1544f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian 1545f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanianllvm::Constant *CGObjCGNU::GenerateEmptyProtocol( 1546f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian const std::string &ProtocolName) { 15475f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<std::string, 0> EmptyStringVector; 15485f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 0> EmptyConstantVector; 1549f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian 1550f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::Constant *ProtocolList = GenerateProtocolList(EmptyStringVector); 1551d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *MethodList = 1552f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian GenerateProtocolMethodList(EmptyConstantVector, EmptyConstantVector); 1553f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian // Protocols are objects containing lists of the methods implemented and 1554f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian // protocols adopted. 15557650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *ProtocolTy = llvm::StructType::get(IdTy, 1556f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian PtrToInt8Ty, 1557f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian ProtocolList->getType(), 1558d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MethodList->getType(), 1559d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MethodList->getType(), 1560d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MethodList->getType(), 1561d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MethodList->getType(), 1562f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian NULL); 15631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump std::vector<llvm::Constant*> Elements; 1564f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian // The isa pointer must be set to a magic number so the runtime knows it's 1565f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian // the correct layout. 15663c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getIntToPtr( 1567917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::ConstantInt::get(Int32Ty, ProtocolVersion), IdTy)); 1568f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian Elements.push_back(MakeConstantString(ProtocolName, ".objc_protocol_name")); 1569f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian Elements.push_back(ProtocolList); 1570d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(MethodList); 1571d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(MethodList); 1572d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(MethodList); 1573d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(MethodList); 1574f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian return MakeGlobal(ProtocolTy, Elements, ".objc_protocol"); 157520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 157620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 1577af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbarvoid CGObjCGNU::GenerateProtocol(const ObjCProtocolDecl *PD) { 1578af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar ASTContext &Context = CGM.getContext(); 15798ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string ProtocolName = PD->getNameAsString(); 15801d784b277cdfd4eba03680715d2a082b3f28d295Douglas Gregor 15811d784b277cdfd4eba03680715d2a082b3f28d295Douglas Gregor // Use the protocol definition, if there is one. 15821d784b277cdfd4eba03680715d2a082b3f28d295Douglas Gregor if (const ObjCProtocolDecl *Def = PD->getDefinition()) 15831d784b277cdfd4eba03680715d2a082b3f28d295Douglas Gregor PD = Def; 15841d784b277cdfd4eba03680715d2a082b3f28d295Douglas Gregor 15855f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<std::string, 16> Protocols; 1586af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar for (ObjCProtocolDecl::protocol_iterator PI = PD->protocol_begin(), 1587af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar E = PD->protocol_end(); PI != E; ++PI) 1588d9d22dd9c94618490dbffb0e2caf222530ca39d3Chris Lattner Protocols.push_back((*PI)->getNameAsString()); 15895f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> InstanceMethodNames; 15905f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> InstanceMethodTypes; 15915f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> OptionalInstanceMethodNames; 15925f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> OptionalInstanceMethodTypes; 159317945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis for (ObjCProtocolDecl::instmeth_iterator iter = PD->instmeth_begin(), 159417945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis E = PD->instmeth_end(); iter != E; iter++) { 1595af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar std::string TypeStr; 1596af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar Context.getObjCEncodingForMethodDecl(*iter, TypeStr); 1597d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if ((*iter)->getImplementationControl() == ObjCMethodDecl::Optional) { 1598d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian InstanceMethodNames.push_back( 1599d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MakeConstantString((*iter)->getSelector().getAsString())); 1600d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian InstanceMethodTypes.push_back(MakeConstantString(TypeStr)); 1601d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 1602d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalInstanceMethodNames.push_back( 1603d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MakeConstantString((*iter)->getSelector().getAsString())); 1604d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalInstanceMethodTypes.push_back(MakeConstantString(TypeStr)); 1605d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1606af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar } 1607af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar // Collect information about class methods: 16085f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> ClassMethodNames; 16095f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> ClassMethodTypes; 16105f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> OptionalClassMethodNames; 16115f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> OptionalClassMethodTypes; 16121eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump for (ObjCProtocolDecl::classmeth_iterator 161317945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = PD->classmeth_begin(), endIter = PD->classmeth_end(); 161417945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter != endIter ; iter++) { 1615af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar std::string TypeStr; 1616af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar Context.getObjCEncodingForMethodDecl((*iter),TypeStr); 1617d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if ((*iter)->getImplementationControl() == ObjCMethodDecl::Optional) { 1618d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ClassMethodNames.push_back( 1619d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MakeConstantString((*iter)->getSelector().getAsString())); 1620d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ClassMethodTypes.push_back(MakeConstantString(TypeStr)); 1621d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 1622d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalClassMethodNames.push_back( 1623d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MakeConstantString((*iter)->getSelector().getAsString())); 1624d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalClassMethodTypes.push_back(MakeConstantString(TypeStr)); 1625d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1626af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar } 162720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 162820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ProtocolList = GenerateProtocolList(Protocols); 162920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *InstanceMethodList = 163020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov GenerateProtocolMethodList(InstanceMethodNames, InstanceMethodTypes); 163120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ClassMethodList = 163220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov GenerateProtocolMethodList(ClassMethodNames, ClassMethodTypes); 1633d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *OptionalInstanceMethodList = 1634d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian GenerateProtocolMethodList(OptionalInstanceMethodNames, 1635d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalInstanceMethodTypes); 1636d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *OptionalClassMethodList = 1637d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian GenerateProtocolMethodList(OptionalClassMethodNames, 1638d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalClassMethodTypes); 1639d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1640d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Property metadata: name, attributes, isSynthesized, setter name, setter 1641d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // types, getter name, getter types. 1642d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // The isSynthesized value is always set to 0 in a protocol. It exists to 1643d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // simplify the runtime library by allowing it to use the same data 1644d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // structures for protocol metadata everywhere. 16457650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *PropertyMetadataTy = llvm::StructType::get( 1646d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrToInt8Ty, Int8Ty, Int8Ty, PtrToInt8Ty, PtrToInt8Ty, PtrToInt8Ty, 1647d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrToInt8Ty, NULL); 1648d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> Properties; 1649d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> OptionalProperties; 1650d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1651d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Add all of the property methods need adding to the method list and to the 1652d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // property metadata list. 1653d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian for (ObjCContainerDecl::prop_iterator 1654d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian iter = PD->prop_begin(), endIter = PD->prop_end(); 1655d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian iter != endIter ; iter++) { 1656d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> Fields; 1657581deb3da481053c4993c7600f97acf7768caac5David Blaikie ObjCPropertyDecl *property = *iter; 1658d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1659d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(MakeConstantString(property->getNameAsString())); 1660d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(llvm::ConstantInt::get(Int8Ty, 1661d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian property->getPropertyAttributes())); 1662d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(llvm::ConstantInt::get(Int8Ty, 0)); 1663d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if (ObjCMethodDecl *getter = property->getGetterMethodDecl()) { 1664d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::string TypeStr; 1665d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Context.getObjCEncodingForMethodDecl(getter,TypeStr); 1666d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *TypeEncoding = MakeConstantString(TypeStr); 1667d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian InstanceMethodTypes.push_back(TypeEncoding); 1668d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(MakeConstantString(getter->getSelector().getAsString())); 1669d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(TypeEncoding); 1670d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 1671d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1672d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1673d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1674d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if (ObjCMethodDecl *setter = property->getSetterMethodDecl()) { 1675d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::string TypeStr; 1676d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Context.getObjCEncodingForMethodDecl(setter,TypeStr); 1677d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *TypeEncoding = MakeConstantString(TypeStr); 1678d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian InstanceMethodTypes.push_back(TypeEncoding); 1679d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(MakeConstantString(setter->getSelector().getAsString())); 1680d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(TypeEncoding); 1681d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 1682d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1683d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1684d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1685d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if (property->getPropertyImplementation() == ObjCPropertyDecl::Optional) { 1686d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalProperties.push_back(llvm::ConstantStruct::get(PropertyMetadataTy, Fields)); 1687d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 1688d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Properties.push_back(llvm::ConstantStruct::get(PropertyMetadataTy, Fields)); 1689d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1690d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1691d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *PropertyArray = llvm::ConstantArray::get( 1692d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ArrayType::get(PropertyMetadataTy, Properties.size()), Properties); 1693d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant* PropertyListInitFields[] = 1694d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian {llvm::ConstantInt::get(IntTy, Properties.size()), NULLPtr, PropertyArray}; 1695d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1696d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *PropertyListInit = 1697c5cbb909e8a27deb8f1a2b6b7bf56a96051af81aChris Lattner llvm::ConstantStruct::getAnon(PropertyListInitFields); 1698d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *PropertyList = new llvm::GlobalVariable(TheModule, 1699d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PropertyListInit->getType(), false, llvm::GlobalValue::InternalLinkage, 1700d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PropertyListInit, ".objc_property_list"); 1701d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1702d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *OptionalPropertyArray = 1703d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ConstantArray::get(llvm::ArrayType::get(PropertyMetadataTy, 1704d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalProperties.size()) , OptionalProperties); 1705d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant* OptionalPropertyListInitFields[] = { 1706d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ConstantInt::get(IntTy, OptionalProperties.size()), NULLPtr, 1707d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalPropertyArray }; 1708d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1709d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *OptionalPropertyListInit = 1710c5cbb909e8a27deb8f1a2b6b7bf56a96051af81aChris Lattner llvm::ConstantStruct::getAnon(OptionalPropertyListInitFields); 1711d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *OptionalPropertyList = new llvm::GlobalVariable(TheModule, 1712d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalPropertyListInit->getType(), false, 1713d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::GlobalValue::InternalLinkage, OptionalPropertyListInit, 1714d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ".objc_property_list"); 1715d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 171620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Protocols are objects containing lists of the methods implemented and 171720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // protocols adopted. 17187650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *ProtocolTy = llvm::StructType::get(IdTy, 171920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 172020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ProtocolList->getType(), 172120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov InstanceMethodList->getType(), 172220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ClassMethodList->getType(), 1723d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalInstanceMethodList->getType(), 1724d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalClassMethodList->getType(), 1725d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PropertyList->getType(), 1726d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalPropertyList->getType(), 172720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 17281eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump std::vector<llvm::Constant*> Elements; 172920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // The isa pointer must be set to a magic number so the runtime knows it's 173020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // the correct layout. 17313c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getIntToPtr( 1732917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::ConstantInt::get(Int32Ty, ProtocolVersion), IdTy)); 173320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(MakeConstantString(ProtocolName, ".objc_protocol_name")); 173420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ProtocolList); 173520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(InstanceMethodList); 173620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ClassMethodList); 1737d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(OptionalInstanceMethodList); 1738d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(OptionalClassMethodList); 1739d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(PropertyList); 1740d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(OptionalPropertyList); 17411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump ExistingProtocols[ProtocolName] = 17423c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::ConstantExpr::getBitCast(MakeGlobal(ProtocolTy, Elements, 174320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ".objc_protocol"), IdTy); 174420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 1745d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanianvoid CGObjCGNU::GenerateProtocolHolderCategory(void) { 1746d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Collect information about instance methods 17475f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<Selector, 1> MethodSels; 17485f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 1> MethodTypes; 1749d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1750d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> Elements; 1751d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian const std::string ClassName = "__ObjC_Protocol_Holder_Ugly_Hack"; 1752d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian const std::string CategoryName = "AnotherHack"; 1753d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(MakeConstantString(CategoryName)); 1754d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(MakeConstantString(ClassName)); 1755d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Instance method list 1756d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(llvm::ConstantExpr::getBitCast(GenerateMethodList( 1757d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ClassName, CategoryName, MethodSels, MethodTypes, false), PtrTy)); 1758d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Class method list 1759d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(llvm::ConstantExpr::getBitCast(GenerateMethodList( 1760d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ClassName, CategoryName, MethodSels, MethodTypes, true), PtrTy)); 1761d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Protocol list 1762d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ArrayType *ProtocolArrayTy = llvm::ArrayType::get(PtrTy, 1763d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ExistingProtocols.size()); 17647650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *ProtocolListTy = llvm::StructType::get( 1765d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrTy, //Should be a recurisve pointer, but it's always NULL here. 17668fac25d33b13e25f512dd921d4d5a4b565f5d175David Chisnall SizeTy, 1767d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolArrayTy, 1768d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian NULL); 1769d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> ProtocolElements; 1770d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian for (llvm::StringMapIterator<llvm::Constant*> iter = 1771d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ExistingProtocols.begin(), endIter = ExistingProtocols.end(); 1772d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian iter != endIter ; iter++) { 1773d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *Ptr = llvm::ConstantExpr::getBitCast(iter->getValue(), 1774d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrTy); 1775d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements.push_back(Ptr); 1776d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1777d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant * ProtocolArray = llvm::ConstantArray::get(ProtocolArrayTy, 1778d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements); 1779d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements.clear(); 1780d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements.push_back(NULLPtr); 1781d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements.push_back(llvm::ConstantInt::get(LongTy, 1782d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ExistingProtocols.size())); 1783d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements.push_back(ProtocolArray); 1784d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(llvm::ConstantExpr::getBitCast(MakeGlobal(ProtocolListTy, 1785d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements, ".objc_protocol_list"), PtrTy)); 1786d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Categories.push_back(llvm::ConstantExpr::getBitCast( 17877650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner MakeGlobal(llvm::StructType::get(PtrToInt8Ty, PtrToInt8Ty, 1788d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrTy, PtrTy, PtrTy, NULL), Elements), PtrTy)); 1789d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian} 179020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 1791917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall/// Libobjc2 uses a bitfield representation where small(ish) bitfields are 1792917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall/// stored in a 64-bit value with the low bit set to 1 and the remaining 63 1793917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall/// bits set to their values, LSB first, while larger ones are stored in a 1794917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall/// structure of this / form: 1795917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall/// 1796917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall/// struct { int32_t length; int32_t values[length]; }; 1797917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall/// 1798917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall/// The values in the array are stored in host-endian format, with the least 1799917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall/// significant bit being assumed to come first in the bitfield. Therefore, a 1800917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall/// bitfield with the 64th bit set will be (int64_t)&{ 2, [0, 1<<31] }, while a 1801917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall/// bitfield / with the 63rd bit set will be 1<<64. 1802795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendlingllvm::Constant *CGObjCGNU::MakeBitField(ArrayRef<bool> bits) { 1803917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall int bitCount = bits.size(); 18049d06ba82d8afb1cf01235f38f350ce5ad0c15444David Chisnall int ptrBits = 18059d06ba82d8afb1cf01235f38f350ce5ad0c15444David Chisnall (TheModule.getPointerSize() == llvm::Module::Pointer32) ? 32 : 64; 18069d06ba82d8afb1cf01235f38f350ce5ad0c15444David Chisnall if (bitCount < ptrBits) { 1807917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall uint64_t val = 1; 1808917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall for (int i=0 ; i<bitCount ; ++i) { 1809e3c944a9f620dacb0c29d16e7d61c8e7fca10963Eli Friedman if (bits[i]) val |= 1ULL<<(i+1); 1810917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall } 18119d06ba82d8afb1cf01235f38f350ce5ad0c15444David Chisnall return llvm::ConstantInt::get(IntPtrTy, val); 1812917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall } 1813917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::SmallVector<llvm::Constant*, 8> values; 1814917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall int v=0; 1815917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall while (v < bitCount) { 1816917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall int32_t word = 0; 1817917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall for (int i=0 ; (i<32) && (v<bitCount) ; ++i) { 1818917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall if (bits[v]) word |= 1<<i; 1819917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall v++; 1820917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall } 1821917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall values.push_back(llvm::ConstantInt::get(Int32Ty, word)); 1822917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall } 1823917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::ArrayType *arrayTy = llvm::ArrayType::get(Int32Ty, values.size()); 1824917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::Constant *array = llvm::ConstantArray::get(arrayTy, values); 1825917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::Constant *fields[2] = { 1826917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::ConstantInt::get(Int32Ty, values.size()), 1827917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall array }; 1828917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::Constant *GS = MakeGlobal(llvm::StructType::get(Int32Ty, arrayTy, 1829917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall NULL), fields); 183049de5289acea91c9d224c9aadd4d527e8f9fdaffDavid Chisnall llvm::Constant *ptr = llvm::ConstantExpr::getPtrToInt(GS, IntPtrTy); 183149de5289acea91c9d224c9aadd4d527e8f9fdaffDavid Chisnall return ptr; 1832917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall} 1833917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall 18347ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbarvoid CGObjCGNU::GenerateCategory(const ObjCCategoryImplDecl *OCD) { 18358ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string ClassName = OCD->getClassInterface()->getNameAsString(); 18368ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string CategoryName = OCD->getNameAsString(); 18377ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about instance methods 18385f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<Selector, 16> InstanceMethodSels; 18395f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> InstanceMethodTypes; 1840653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor for (ObjCCategoryImplDecl::instmeth_iterator 184117945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = OCD->instmeth_begin(), endIter = OCD->instmeth_end(); 1842653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter != endIter ; iter++) { 18437ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar InstanceMethodSels.push_back((*iter)->getSelector()); 18447ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 18457ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar CGM.getContext().getObjCEncodingForMethodDecl(*iter,TypeStr); 18468a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall InstanceMethodTypes.push_back(MakeConstantString(TypeStr)); 18477ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 18487ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 18497ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about class methods 18505f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<Selector, 16> ClassMethodSels; 18515f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> ClassMethodTypes; 18521eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump for (ObjCCategoryImplDecl::classmeth_iterator 185317945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = OCD->classmeth_begin(), endIter = OCD->classmeth_end(); 1854653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter != endIter ; iter++) { 18557ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar ClassMethodSels.push_back((*iter)->getSelector()); 18567ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 18577ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar CGM.getContext().getObjCEncodingForMethodDecl(*iter,TypeStr); 18588a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall ClassMethodTypes.push_back(MakeConstantString(TypeStr)); 18597ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 18607ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 18617ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect the names of referenced protocols 18625f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<std::string, 16> Protocols; 1863ad9e06d82ae627e858e5bfe4a7f1f9337b5b0a15David Chisnall const ObjCCategoryDecl *CatDecl = OCD->getCategoryDecl(); 1864ad9e06d82ae627e858e5bfe4a7f1f9337b5b0a15David Chisnall const ObjCList<ObjCProtocolDecl> &Protos = CatDecl->getReferencedProtocols(); 18657ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar for (ObjCList<ObjCProtocolDecl>::iterator I = Protos.begin(), 18667ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar E = Protos.end(); I != E; ++I) 1867d9d22dd9c94618490dbffb0e2caf222530ca39d3Chris Lattner Protocols.push_back((*I)->getNameAsString()); 18687ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 186920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 187020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(MakeConstantString(CategoryName)); 187120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(MakeConstantString(ClassName)); 18721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Instance method list 18733c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getBitCast(GenerateMethodList( 1874a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner ClassName, CategoryName, InstanceMethodSels, InstanceMethodTypes, 187520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov false), PtrTy)); 187620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Class method list 18773c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getBitCast(GenerateMethodList( 1878a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner ClassName, CategoryName, ClassMethodSels, ClassMethodTypes, true), 187920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy)); 188020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Protocol list 18813c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getBitCast( 188220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov GenerateProtocolList(Protocols), PtrTy)); 18833c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Categories.push_back(llvm::ConstantExpr::getBitCast( 18847650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner MakeGlobal(llvm::StructType::get(PtrToInt8Ty, PtrToInt8Ty, 188547a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson PtrTy, PtrTy, PtrTy, NULL), Elements), PtrTy)); 188620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 18877ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 1888d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanianllvm::Constant *CGObjCGNU::GeneratePropertyList(const ObjCImplementationDecl *OID, 18895f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVectorImpl<Selector> &InstanceMethodSels, 18905f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVectorImpl<llvm::Constant*> &InstanceMethodTypes) { 1891d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ASTContext &Context = CGM.getContext(); 1892d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // 1893d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Property metadata: name, attributes, isSynthesized, setter name, setter 1894d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // types, getter name, getter types. 18957650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *PropertyMetadataTy = llvm::StructType::get( 1896d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrToInt8Ty, Int8Ty, Int8Ty, PtrToInt8Ty, PtrToInt8Ty, PtrToInt8Ty, 1897d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrToInt8Ty, NULL); 1898d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> Properties; 1899d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1900d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1901d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Add all of the property methods need adding to the method list and to the 1902d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // property metadata list. 1903d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian for (ObjCImplDecl::propimpl_iterator 1904d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian iter = OID->propimpl_begin(), endIter = OID->propimpl_end(); 1905d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian iter != endIter ; iter++) { 1906d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> Fields; 1907262bc18e32500558af7cb0afa205b34bd37bafedDavid Blaikie ObjCPropertyDecl *property = iter->getPropertyDecl(); 1908581deb3da481053c4993c7600f97acf7768caac5David Blaikie ObjCPropertyImplDecl *propertyImpl = *iter; 190942ba04a072c69d84a6660e4498215086662910acDavid Chisnall bool isSynthesized = (propertyImpl->getPropertyImplementation() == 191042ba04a072c69d84a6660e4498215086662910acDavid Chisnall ObjCPropertyImplDecl::Synthesize); 1911d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1912d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(MakeConstantString(property->getNameAsString())); 1913d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(llvm::ConstantInt::get(Int8Ty, 1914d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian property->getPropertyAttributes())); 191542ba04a072c69d84a6660e4498215086662910acDavid Chisnall Fields.push_back(llvm::ConstantInt::get(Int8Ty, isSynthesized)); 1916d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if (ObjCMethodDecl *getter = property->getGetterMethodDecl()) { 1917d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::string TypeStr; 1918d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Context.getObjCEncodingForMethodDecl(getter,TypeStr); 1919d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *TypeEncoding = MakeConstantString(TypeStr); 192042ba04a072c69d84a6660e4498215086662910acDavid Chisnall if (isSynthesized) { 192142ba04a072c69d84a6660e4498215086662910acDavid Chisnall InstanceMethodTypes.push_back(TypeEncoding); 192242ba04a072c69d84a6660e4498215086662910acDavid Chisnall InstanceMethodSels.push_back(getter->getSelector()); 192342ba04a072c69d84a6660e4498215086662910acDavid Chisnall } 1924d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(MakeConstantString(getter->getSelector().getAsString())); 1925d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(TypeEncoding); 1926d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 1927d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1928d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1929d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1930d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if (ObjCMethodDecl *setter = property->getSetterMethodDecl()) { 1931d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::string TypeStr; 1932d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Context.getObjCEncodingForMethodDecl(setter,TypeStr); 1933d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *TypeEncoding = MakeConstantString(TypeStr); 193442ba04a072c69d84a6660e4498215086662910acDavid Chisnall if (isSynthesized) { 193542ba04a072c69d84a6660e4498215086662910acDavid Chisnall InstanceMethodTypes.push_back(TypeEncoding); 193642ba04a072c69d84a6660e4498215086662910acDavid Chisnall InstanceMethodSels.push_back(setter->getSelector()); 193742ba04a072c69d84a6660e4498215086662910acDavid Chisnall } 1938d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(MakeConstantString(setter->getSelector().getAsString())); 1939d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(TypeEncoding); 1940d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 1941d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1942d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1943d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1944d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Properties.push_back(llvm::ConstantStruct::get(PropertyMetadataTy, Fields)); 1945d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1946d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ArrayType *PropertyArrayTy = 1947d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ArrayType::get(PropertyMetadataTy, Properties.size()); 1948d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *PropertyArray = llvm::ConstantArray::get(PropertyArrayTy, 1949d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Properties); 1950d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant* PropertyListInitFields[] = 1951d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian {llvm::ConstantInt::get(IntTy, Properties.size()), NULLPtr, PropertyArray}; 1952d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1953d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *PropertyListInit = 1954c5cbb909e8a27deb8f1a2b6b7bf56a96051af81aChris Lattner llvm::ConstantStruct::getAnon(PropertyListInitFields); 1955d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian return new llvm::GlobalVariable(TheModule, PropertyListInit->getType(), false, 1956d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::GlobalValue::InternalLinkage, PropertyListInit, 1957d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ".objc_property_list"); 1958d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian} 1959d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 196029254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnallvoid CGObjCGNU::RegisterAlias(const ObjCCompatibleAliasDecl *OAD) { 196129254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall // Get the class declaration for which the alias is specified. 196229254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall ObjCInterfaceDecl *ClassDecl = 196329254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall const_cast<ObjCInterfaceDecl *>(OAD->getClassInterface()); 196429254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall std::string ClassName = ClassDecl->getNameAsString(); 196529254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall std::string AliasName = OAD->getNameAsString(); 196629254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall ClassAliases.push_back(ClassAliasPair(ClassName,AliasName)); 196729254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall} 196829254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall 19697ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbarvoid CGObjCGNU::GenerateClass(const ObjCImplementationDecl *OID) { 19707ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar ASTContext &Context = CGM.getContext(); 19717ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 19727ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Get the superclass name. 19731eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const ObjCInterfaceDecl * SuperClassDecl = 19747ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar OID->getClassInterface()->getSuperClass(); 19758ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string SuperClassName; 19762a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner if (SuperClassDecl) { 19778ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner SuperClassName = SuperClassDecl->getNameAsString(); 19782a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner EmitClassRef(SuperClassName); 19792a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner } 19807ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 19817ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Get the class name 198209dc6660487fc2f4a4bb2032e30123d3e0da7230Chris Lattner ObjCInterfaceDecl *ClassDecl = 198309dc6660487fc2f4a4bb2032e30123d3e0da7230Chris Lattner const_cast<ObjCInterfaceDecl *>(OID->getClassInterface()); 19848ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string ClassName = ClassDecl->getNameAsString(); 19852a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner // Emit the symbol that is used to generate linker errors if this class is 19862a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner // referenced in other modules but not declared. 1987c51db23f58bd887b16cf91554aa86c430a2496e7Fariborz Jahanian std::string classSymbolName = "__objc_class_name_" + ClassName; 19881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (llvm::GlobalVariable *symbol = 1989c51db23f58bd887b16cf91554aa86c430a2496e7Fariborz Jahanian TheModule.getGlobalVariable(classSymbolName)) { 19904a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson symbol->setInitializer(llvm::ConstantInt::get(LongTy, 0)); 1991c51db23f58bd887b16cf91554aa86c430a2496e7Fariborz Jahanian } else { 19921c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson new llvm::GlobalVariable(TheModule, LongTy, false, 19934a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson llvm::GlobalValue::ExternalLinkage, llvm::ConstantInt::get(LongTy, 0), 19941c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson classSymbolName); 1995c51db23f58bd887b16cf91554aa86c430a2496e7Fariborz Jahanian } 19961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19972bebbf0acee55404de4b8846713b64429e744e8fDaniel Dunbar // Get the size of instances. 19985f022d82696c84e4d127c558871d68ac6273274eKen Dyck int instanceSize = 19995f022d82696c84e4d127c558871d68ac6273274eKen Dyck Context.getASTObjCImplementationLayout(OID).getSize().getQuantity(); 20007ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 20017ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about instance variables. 20025f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> IvarNames; 20035f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> IvarTypes; 20045f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> IvarOffsets; 20051eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2006d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> IvarOffsetValues; 2007917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall SmallVector<bool, 16> WeakIvars; 2008917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall SmallVector<bool, 16> StrongIvars; 2009d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 20101eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump int superInstanceSize = !SuperClassDecl ? 0 : 20115f022d82696c84e4d127c558871d68ac6273274eKen Dyck Context.getASTObjCInterfaceLayout(SuperClassDecl).getSize().getQuantity(); 20129cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // For non-fragile ivars, set the instance size to 0 - {the size of just this 20139cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // class}. The runtime will then set this to the correct value on load. 2014260611a32535c851237926bfcf78869b13c07d5bJohn McCall if (CGM.getContext().getLangOpts().ObjCRuntime.isNonFragile()) { 20159cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian instanceSize = 0 - (instanceSize - superInstanceSize); 20169cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 20177f63cb098f2461643f71ea590c1a477603f27f63David Chisnall 2018db8264e4c5ffd7af6fbad4ca4306bd382bb02691Jordy Rose for (const ObjCIvarDecl *IVD = ClassDecl->all_declared_ivar_begin(); IVD; 2019db8264e4c5ffd7af6fbad4ca4306bd382bb02691Jordy Rose IVD = IVD->getNextIvar()) { 20207ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Store the name 20217f63cb098f2461643f71ea590c1a477603f27f63David Chisnall IvarNames.push_back(MakeConstantString(IVD->getNameAsString())); 20227ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Get the type encoding for this ivar 20237ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 20247f63cb098f2461643f71ea590c1a477603f27f63David Chisnall Context.getObjCEncodingForType(IVD->getType(), TypeStr); 20258a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall IvarTypes.push_back(MakeConstantString(TypeStr)); 20267ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Get the offset 2027d901da531433254210a08e8b1f9e1ad049b340aaDavid Chisnall uint64_t BaseOffset = ComputeIvarBaseOffset(CGM, OID, IVD); 2028aecbf24a6bad049437f8fec97e557d414003a3dbDavid Chisnall uint64_t Offset = BaseOffset; 2029260611a32535c851237926bfcf78869b13c07d5bJohn McCall if (CGM.getContext().getLangOpts().ObjCRuntime.isNonFragile()) { 2030d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Offset = BaseOffset - superInstanceSize; 20319cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 203263ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall llvm::Constant *OffsetValue = llvm::ConstantInt::get(IntTy, Offset); 203363ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall // Create the direct offset value 203463ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall std::string OffsetName = "__objc_ivar_offset_value_" + ClassName +"." + 203563ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall IVD->getNameAsString(); 203663ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall llvm::GlobalVariable *OffsetVar = TheModule.getGlobalVariable(OffsetName); 203763ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall if (OffsetVar) { 203863ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall OffsetVar->setInitializer(OffsetValue); 203963ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall // If this is the real definition, change its linkage type so that 204063ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall // different modules will use this one, rather than their private 204163ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall // copy. 204263ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall OffsetVar->setLinkage(llvm::GlobalValue::ExternalLinkage); 204363ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall } else 204463ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall OffsetVar = new llvm::GlobalVariable(TheModule, IntTy, 2045d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian false, llvm::GlobalValue::ExternalLinkage, 204663ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall OffsetValue, 2047d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian "__objc_ivar_offset_value_" + ClassName +"." + 204863ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall IVD->getNameAsString()); 204963ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall IvarOffsets.push_back(OffsetValue); 205063ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall IvarOffsetValues.push_back(OffsetVar); 2051917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall Qualifiers::ObjCLifetime lt = IVD->getType().getQualifiers().getObjCLifetime(); 2052917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall switch (lt) { 2053917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall case Qualifiers::OCL_Strong: 2054917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall StrongIvars.push_back(true); 2055917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall WeakIvars.push_back(false); 2056917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall break; 2057917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall case Qualifiers::OCL_Weak: 2058917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall StrongIvars.push_back(false); 2059917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall WeakIvars.push_back(true); 2060917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall break; 2061917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall default: 2062917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall StrongIvars.push_back(false); 2063917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall WeakIvars.push_back(false); 2064917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall } 20657ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 2066917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::Constant *StrongIvarBitmap = MakeBitField(StrongIvars); 2067917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::Constant *WeakIvarBitmap = MakeBitField(WeakIvars); 20689f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::GlobalVariable *IvarOffsetArray = 20699f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall MakeGlobalArray(PtrToIntTy, IvarOffsetValues, ".ivar.offsets"); 20709f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 20717ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 20727ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about instance methods 20735f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<Selector, 16> InstanceMethodSels; 20745f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> InstanceMethodTypes; 20751eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump for (ObjCImplementationDecl::instmeth_iterator 207617945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = OID->instmeth_begin(), endIter = OID->instmeth_end(); 2077653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter != endIter ; iter++) { 20787ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar InstanceMethodSels.push_back((*iter)->getSelector()); 20797ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 20807ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar Context.getObjCEncodingForMethodDecl((*iter),TypeStr); 20818a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall InstanceMethodTypes.push_back(MakeConstantString(TypeStr)); 20827ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 2083d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 2084d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *Properties = GeneratePropertyList(OID, InstanceMethodSels, 2085d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian InstanceMethodTypes); 2086d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 20877ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 20887ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about class methods 20895f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<Selector, 16> ClassMethodSels; 20905f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> ClassMethodTypes; 2091653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor for (ObjCImplementationDecl::classmeth_iterator 209217945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = OID->classmeth_begin(), endIter = OID->classmeth_end(); 2093653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter != endIter ; iter++) { 20947ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar ClassMethodSels.push_back((*iter)->getSelector()); 20957ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 20967ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar Context.getObjCEncodingForMethodDecl((*iter),TypeStr); 20978a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall ClassMethodTypes.push_back(MakeConstantString(TypeStr)); 20987ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 20997ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect the names of referenced protocols 21005f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<std::string, 16> Protocols; 2101a5f4441de7890953460d95f4e88b9fa432b48dc2Argyrios Kyrtzidis for (ObjCInterfaceDecl::protocol_iterator 2102a5f4441de7890953460d95f4e88b9fa432b48dc2Argyrios Kyrtzidis I = ClassDecl->protocol_begin(), 2103a5f4441de7890953460d95f4e88b9fa432b48dc2Argyrios Kyrtzidis E = ClassDecl->protocol_end(); I != E; ++I) 2104d9d22dd9c94618490dbffb0e2caf222530ca39d3Chris Lattner Protocols.push_back((*I)->getNameAsString()); 21057ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 21067ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 21077ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 210820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Get the superclass pointer. 210920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SuperClass; 21108ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner if (!SuperClassName.empty()) { 211120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov SuperClass = MakeConstantString(SuperClassName, ".super_class_name"); 211220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } else { 211303e205031b08669f05c41eed5b896fc94c4a12bbOwen Anderson SuperClass = llvm::ConstantPointerNull::get(PtrToInt8Ty); 211420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 211520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Empty vector used to construct empty method lists 21165f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 1> empty; 211720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Generate the method and instance variable lists 211820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MethodList = GenerateMethodList(ClassName, "", 2119a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner InstanceMethodSels, InstanceMethodTypes, false); 212020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ClassMethodList = GenerateMethodList(ClassName, "", 2121a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner ClassMethodSels, ClassMethodTypes, true); 212220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *IvarList = GenerateIvarList(IvarNames, IvarTypes, 212320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IvarOffsets); 21241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Irrespective of whether we are compiling for a fragile or non-fragile ABI, 21258a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // we emit a symbol containing the offset for each ivar in the class. This 21268a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // allows code compiled for the non-Fragile ABI to inherit from code compiled 21278a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // for the legacy ABI, without causing problems. The converse is also 21288a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // possible, but causes all ivar accesses to be fragile. 2129e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall 21308a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // Offset pointer for getting at the correct field in the ivar list when 21318a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // setting up the alias. These are: The base address for the global, the 21328a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // ivar array (second field), the ivar in this list (set for each ivar), and 21338a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // the offset (third field in ivar structure) 2134917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::Type *IndexTy = Int32Ty; 21358a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::Constant *offsetPointerIndexes[] = {Zeros[0], 21361eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::ConstantInt::get(IndexTy, 1), 0, 21378a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::ConstantInt::get(IndexTy, 2) }; 21388a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall 2139db8264e4c5ffd7af6fbad4ca4306bd382bb02691Jordy Rose unsigned ivarIndex = 0; 2140db8264e4c5ffd7af6fbad4ca4306bd382bb02691Jordy Rose for (const ObjCIvarDecl *IVD = ClassDecl->all_declared_ivar_begin(); IVD; 2141db8264e4c5ffd7af6fbad4ca4306bd382bb02691Jordy Rose IVD = IVD->getNextIvar()) { 21428a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall const std::string Name = "__objc_ivar_offset_" + ClassName + '.' 2143e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall + IVD->getNameAsString(); 2144db8264e4c5ffd7af6fbad4ca4306bd382bb02691Jordy Rose offsetPointerIndexes[2] = llvm::ConstantInt::get(IndexTy, ivarIndex); 21458a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // Get the correct ivar field 21468a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::Constant *offsetValue = llvm::ConstantExpr::getGetElementPtr( 2147a5c04344fa70d6eec34344760c1fe511e16f2d76Jay Foad IvarList, offsetPointerIndexes); 2148e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // Get the existing variable, if one exists. 21498a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::GlobalVariable *offset = TheModule.getNamedGlobal(Name); 21508a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall if (offset) { 215174a1a1f0b6f6c4468444196a02c033be521f7d79Ted Kremenek offset->setInitializer(offsetValue); 215274a1a1f0b6f6c4468444196a02c033be521f7d79Ted Kremenek // If this is the real definition, change its linkage type so that 215374a1a1f0b6f6c4468444196a02c033be521f7d79Ted Kremenek // different modules will use this one, rather than their private 215474a1a1f0b6f6c4468444196a02c033be521f7d79Ted Kremenek // copy. 215574a1a1f0b6f6c4468444196a02c033be521f7d79Ted Kremenek offset->setLinkage(llvm::GlobalValue::ExternalLinkage); 21568a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall } else { 215774a1a1f0b6f6c4468444196a02c033be521f7d79Ted Kremenek // Add a new alias if there isn't one already. 215874a1a1f0b6f6c4468444196a02c033be521f7d79Ted Kremenek offset = new llvm::GlobalVariable(TheModule, offsetValue->getType(), 215974a1a1f0b6f6c4468444196a02c033be521f7d79Ted Kremenek false, llvm::GlobalValue::ExternalLinkage, offsetValue, Name); 216074a1a1f0b6f6c4468444196a02c033be521f7d79Ted Kremenek (void) offset; // Silence dead store warning. 21618a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall } 2162db8264e4c5ffd7af6fbad4ca4306bd382bb02691Jordy Rose ++ivarIndex; 21638a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall } 21649d06ba82d8afb1cf01235f38f350ce5ad0c15444David Chisnall llvm::Constant *ZeroPtr = llvm::ConstantInt::get(IntPtrTy, 0); 216520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov //Generate metaclass for class methods 216620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MetaClassStruct = GenerateClassStructure(NULLPtr, 21671804463ee790ac3cc73f72597ccb38b983f7d263David Chisnall NULLPtr, 0x12L, ClassName.c_str(), 0, Zeros[0], GenerateIvarList( 2168917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall empty, empty, empty), ClassMethodList, NULLPtr, 21699d06ba82d8afb1cf01235f38f350ce5ad0c15444David Chisnall NULLPtr, NULLPtr, ZeroPtr, ZeroPtr, true); 21705efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar 217120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Generate the class structure 21728ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner llvm::Constant *ClassStruct = 2173d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian GenerateClassStructure(MetaClassStruct, SuperClass, 0x11L, 21748ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner ClassName.c_str(), 0, 21754a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson llvm::ConstantInt::get(LongTy, instanceSize), IvarList, 2176d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MethodList, GenerateProtocolList(Protocols), IvarOffsetArray, 2177917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall Properties, StrongIvarBitmap, WeakIvarBitmap); 21785efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar 21795efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar // Resolve the class aliases, if they exist. 21805efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar if (ClassPtrAlias) { 21810b9c22b61a3c99c8c0e8d898adb0f60afa76584eDavid Chisnall ClassPtrAlias->replaceAllUsesWith( 21823c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::ConstantExpr::getBitCast(ClassStruct, IdTy)); 21830b9c22b61a3c99c8c0e8d898adb0f60afa76584eDavid Chisnall ClassPtrAlias->eraseFromParent(); 21845efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar ClassPtrAlias = 0; 21855efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } 21865efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar if (MetaClassPtrAlias) { 21870b9c22b61a3c99c8c0e8d898adb0f60afa76584eDavid Chisnall MetaClassPtrAlias->replaceAllUsesWith( 21883c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::ConstantExpr::getBitCast(MetaClassStruct, IdTy)); 21890b9c22b61a3c99c8c0e8d898adb0f60afa76584eDavid Chisnall MetaClassPtrAlias->eraseFromParent(); 21905efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar MetaClassPtrAlias = 0; 21915efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } 21925efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar 219320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Add class structure to list to be added to the symtab later 21943c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson ClassStruct = llvm::ConstantExpr::getBitCast(ClassStruct, PtrToInt8Ty); 219520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.push_back(ClassStruct); 219620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 219720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 2198c38e9affd4519ea199af22419c8c794973cc4b23Fariborz Jahanian 21991eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumpllvm::Function *CGObjCGNU::ModuleInitFunction() { 220020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Only emit an ObjC load function if no Objective-C stuff has been called 220120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov if (Classes.empty() && Categories.empty() && ConstantStrings.empty() && 22029f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall ExistingProtocols.empty() && SelectorTable.empty()) 220320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return NULL; 22041b8956e1ce4c5770982d6e59edb16979b500677aEli Friedman 2205d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Add all referenced protocols to a category. 2206d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian GenerateProtocolHolderCategory(); 2207d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 22082acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::StructType *SelStructTy = dyn_cast<llvm::StructType>( 2209e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner SelectorTy->getElementType()); 2210ef6de3da8572607f786303c07150daa6e140ab19Jay Foad llvm::Type *SelStructPtrTy = SelectorTy; 2211e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner if (SelStructTy == 0) { 22127650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner SelStructTy = llvm::StructType::get(PtrToInt8Ty, PtrToInt8Ty, NULL); 221396e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson SelStructPtrTy = llvm::PointerType::getUnqual(SelStructTy); 2214e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner } 2215e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner 221620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 221771238f67c5df13eef19450d66b7a7ab28377192aChris Lattner llvm::Constant *Statics = NULLPtr; 221820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Generate statics list: 221971238f67c5df13eef19450d66b7a7ab28377192aChris Lattner if (ConstantStrings.size()) { 222096e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *StaticsArrayTy = llvm::ArrayType::get(PtrToInt8Ty, 222171238f67c5df13eef19450d66b7a7ab28377192aChris Lattner ConstantStrings.size() + 1); 222271238f67c5df13eef19450d66b7a7ab28377192aChris Lattner ConstantStrings.push_back(NULLPtr); 22238a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall 22244e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie StringRef StringClass = CGM.getLangOpts().ObjCConstantStringClass; 22259f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 22261b0969590e712d7d52fc9c0d43d3ab85c36d07a6Daniel Dunbar if (StringClass.empty()) StringClass = "NXConstantString"; 22279f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 22288a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall Elements.push_back(MakeConstantString(StringClass, 22298a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall ".objc_static_class_name")); 22307db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson Elements.push_back(llvm::ConstantArray::get(StaticsArrayTy, 223171238f67c5df13eef19450d66b7a7ab28377192aChris Lattner ConstantStrings)); 22321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::StructType *StaticsListTy = 22337650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType::get(PtrToInt8Ty, StaticsArrayTy, NULL); 2234a1cf15f4680e5cf39e72e28c5ea854fcba792e84Owen Anderson llvm::Type *StaticsListPtrTy = 223596e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(StaticsListTy); 223671238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Statics = MakeGlobal(StaticsListTy, Elements, ".objc_statics"); 22371eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::ArrayType *StaticsListArrayTy = 223896e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType::get(StaticsListPtrTy, 2); 223971238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Elements.clear(); 224071238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Elements.push_back(Statics); 2241c9c88b4159791c48e486ca94e3743b5979e2b7a6Owen Anderson Elements.push_back(llvm::Constant::getNullValue(StaticsListPtrTy)); 224271238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Statics = MakeGlobal(StaticsListArrayTy, Elements, ".objc_statics_ptr"); 22433c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Statics = llvm::ConstantExpr::getBitCast(Statics, PtrTy); 224471238f67c5df13eef19450d66b7a7ab28377192aChris Lattner } 224520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Array of classes, categories, and constant objects 224696e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *ClassListTy = llvm::ArrayType::get(PtrToInt8Ty, 224720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.size() + Categories.size() + 2); 22487650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *SymTabTy = llvm::StructType::get(LongTy, SelStructPtrTy, 22490032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::Type::getInt16Ty(VMContext), 22500032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::Type::getInt16Ty(VMContext), 2251630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner ClassListTy, NULL); 225220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 225320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 225420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Pointer to an array of selectors used in this module. 225520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Selectors; 22569f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall std::vector<llvm::GlobalAlias*> SelectorAliases; 22579f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall for (SelectorMap::iterator iter = SelectorTable.begin(), 22589f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall iterEnd = SelectorTable.end(); iter != iterEnd ; ++iter) { 22599f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 22609f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall std::string SelNameStr = iter->first.getAsString(); 22619f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::Constant *SelName = ExportUniqueString(SelNameStr, ".objc_sel_name"); 22629f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 22635f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVectorImpl<TypedSelector> &Types = iter->second; 22645f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner for (SmallVectorImpl<TypedSelector>::iterator i = Types.begin(), 22659f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall e = Types.end() ; i!=e ; i++) { 22669f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 22679f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::Constant *SelectorTypeEncoding = NULLPtr; 22689f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall if (!i->first.empty()) 22699f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SelectorTypeEncoding = MakeConstantString(i->first, ".objc_sel_types"); 22709f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 22719f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Elements.push_back(SelName); 22729f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Elements.push_back(SelectorTypeEncoding); 22739f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Selectors.push_back(llvm::ConstantStruct::get(SelStructTy, Elements)); 22749f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Elements.clear(); 22759f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 22769f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // Store the selector alias for later replacement 22779f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SelectorAliases.push_back(i->second); 22789f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall } 227920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 22809f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall unsigned SelectorCount = Selectors.size(); 22819f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // NULL-terminate the selector list. This should not actually be required, 22829f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // because the selector list has a length field. Unfortunately, the GCC 22839f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // runtime decides to ignore the length field and expects a NULL terminator, 22849f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // and GCC cooperates with this by always setting the length to 0. 228520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 228620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 228708e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson Selectors.push_back(llvm::ConstantStruct::get(SelStructTy, Elements)); 228820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 22899f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 229020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Number of static selectors 22919f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Elements.push_back(llvm::ConstantInt::get(LongTy, SelectorCount)); 22929f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::Constant *SelectorList = MakeGlobalArray(SelStructTy, Selectors, 229320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ".objc_selector_list"); 22941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Elements.push_back(llvm::ConstantExpr::getBitCast(SelectorList, 2295e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner SelStructPtrTy)); 229620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 229720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Now that all of the static selectors exist, create pointers to them. 22989f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall for (unsigned int i=0 ; i<SelectorCount ; i++) { 22999f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 230020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Idxs[] = {Zeros[0], 2301917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::ConstantInt::get(Int32Ty, i), Zeros[0]}; 23029f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // FIXME: We're generating redundant loads and stores here! 2303c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Constant *SelPtr = llvm::ConstantExpr::getGetElementPtr(SelectorList, 2304a5c04344fa70d6eec34344760c1fe511e16f2d76Jay Foad makeArrayRef(Idxs, 2)); 2305e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner // If selectors are defined as an opaque type, cast the pointer to this 2306e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner // type. 2307c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall SelPtr = llvm::ConstantExpr::getBitCast(SelPtr, SelectorTy); 23089f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SelectorAliases[i]->replaceAllUsesWith(SelPtr); 23099f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SelectorAliases[i]->eraseFromParent(); 231020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 23119f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 231220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Number of classes defined. 23131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Elements.push_back(llvm::ConstantInt::get(llvm::Type::getInt16Ty(VMContext), 231420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.size())); 231520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Number of categories defined 23161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Elements.push_back(llvm::ConstantInt::get(llvm::Type::getInt16Ty(VMContext), 231720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Categories.size())); 231820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an array of classes, then categories, then static object instances 231920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.insert(Classes.end(), Categories.begin(), Categories.end()); 232020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // NULL-terminated list of static object instances (mainly constant strings) 232120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.push_back(Statics); 232220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.push_back(NULLPtr); 23237db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson llvm::Constant *ClassList = llvm::ConstantArray::get(ClassListTy, Classes); 232420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ClassList); 23251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Construct the symbol table 232620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SymTab= MakeGlobal(SymTabTy, Elements); 232720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 232820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // The symbol table is contained in a module which has some version-checking 232920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // constants 23307650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType * ModuleTy = llvm::StructType::get(LongTy, LongTy, 2331a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall PtrToInt8Ty, llvm::PointerType::getUnqual(SymTabTy), 2332f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall (RuntimeVersion >= 10) ? IntTy : NULL, NULL); 233320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 23349f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // Runtime version, used for ABI compatibility checking. 23359f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Elements.push_back(llvm::ConstantInt::get(LongTy, RuntimeVersion)); 233691a0b51438e5259a79d68d7450c453827beed9e2Fariborz Jahanian // sizeof(ModuleTy) 233774a8bbf0654fbbf37be04b240b5bbe591f37f242Benjamin Kramer llvm::TargetData td(&TheModule); 2338e0afc892e75f526f7ecce7dd152d946337632efeKen Dyck Elements.push_back( 2339e0afc892e75f526f7ecce7dd152d946337632efeKen Dyck llvm::ConstantInt::get(LongTy, 2340e0afc892e75f526f7ecce7dd152d946337632efeKen Dyck td.getTypeSizeInBits(ModuleTy) / 2341e0afc892e75f526f7ecce7dd152d946337632efeKen Dyck CGM.getContext().getCharWidth())); 23429f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 23439f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // The path to the source file where this module was declared 23449f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SourceManager &SM = CGM.getContext().getSourceManager(); 23459f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall const FileEntry *mainFile = SM.getFileEntryForID(SM.getMainFileID()); 23469f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall std::string path = 23479f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall std::string(mainFile->getDir()->getName()) + '/' + mainFile->getName(); 23489f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Elements.push_back(MakeConstantString(path, ".objc_source_file_name")); 234920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(SymTab); 2350a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall 2351f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall if (RuntimeVersion >= 10) 23524e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie switch (CGM.getLangOpts().getGC()) { 2353f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall case LangOptions::GCOnly: 2354a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall Elements.push_back(llvm::ConstantInt::get(IntTy, 2)); 2355a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall break; 2356f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall case LangOptions::NonGC: 23574e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (CGM.getLangOpts().ObjCAutoRefCount) 2358f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall Elements.push_back(llvm::ConstantInt::get(IntTy, 1)); 2359f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall else 2360f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall Elements.push_back(llvm::ConstantInt::get(IntTy, 0)); 2361f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall break; 2362f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall case LangOptions::HybridGC: 2363f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall Elements.push_back(llvm::ConstantInt::get(IntTy, 1)); 2364f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall break; 2365f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall } 2366a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall 236720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Value *Module = MakeGlobal(ModuleTy, Elements); 236820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 236920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create the load function calling the runtime entry point with the module 237020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // structure 237120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Function * LoadFunction = llvm::Function::Create( 23720032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::FunctionType::get(llvm::Type::getVoidTy(VMContext), false), 237320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::GlobalValue::InternalLinkage, ".objc_load_function", 237420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov &TheModule); 23750032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::BasicBlock *EntryBB = 23760032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::BasicBlock::Create(VMContext, "entry", LoadFunction); 2377a1cf15f4680e5cf39e72e28c5ea854fcba792e84Owen Anderson CGBuilderTy Builder(VMContext); 237820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Builder.SetInsertPoint(EntryBB); 237926c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian 238095d318c4c10437db40ca6e15fdf32e04012da58eBenjamin Kramer llvm::FunctionType *FT = 2381da549e8995c447542d5631b8b67fcc3a9582797aJay Foad llvm::FunctionType::get(Builder.getVoidTy(), 2382da549e8995c447542d5631b8b67fcc3a9582797aJay Foad llvm::PointerType::getUnqual(ModuleTy), true); 238395d318c4c10437db40ca6e15fdf32e04012da58eBenjamin Kramer llvm::Value *Register = CGM.CreateRuntimeFunction(FT, "__objc_exec_class"); 238420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Builder.CreateCall(Register, Module); 238529254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall 2386dccaa239ec125926a9c1fb5f328bce349e41637bDavid Chisnall if (!ClassAliases.empty()) { 238729254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall llvm::Type *ArgTypes[2] = {PtrTy, PtrToInt8Ty}; 238829254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall llvm::FunctionType *RegisterAliasTy = 238929254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall llvm::FunctionType::get(Builder.getVoidTy(), 239029254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall ArgTypes, false); 239129254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall llvm::Function *RegisterAlias = llvm::Function::Create( 239229254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall RegisterAliasTy, 239329254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall llvm::GlobalValue::ExternalWeakLinkage, "class_registerAlias_np", 239429254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall &TheModule); 239529254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall llvm::BasicBlock *AliasBB = 239629254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall llvm::BasicBlock::Create(VMContext, "alias", LoadFunction); 239729254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall llvm::BasicBlock *NoAliasBB = 239829254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall llvm::BasicBlock::Create(VMContext, "no_alias", LoadFunction); 239929254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall 240029254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall // Branch based on whether the runtime provided class_registerAlias_np() 240129254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall llvm::Value *HasRegisterAlias = Builder.CreateICmpNE(RegisterAlias, 240229254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall llvm::Constant::getNullValue(RegisterAlias->getType())); 240329254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall Builder.CreateCondBr(HasRegisterAlias, AliasBB, NoAliasBB); 240429254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall 240529254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall // The true branch (has alias registration fucntion): 240629254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall Builder.SetInsertPoint(AliasBB); 240729254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall // Emit alias registration calls: 240829254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall for (std::vector<ClassAliasPair>::iterator iter = ClassAliases.begin(); 240929254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall iter != ClassAliases.end(); ++iter) { 241029254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall llvm::Constant *TheClass = 241129254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall TheModule.getGlobalVariable(("_OBJC_CLASS_" + iter->first).c_str(), 241229254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall true); 241329254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall if (0 != TheClass) { 241429254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall TheClass = llvm::ConstantExpr::getBitCast(TheClass, PtrTy); 241529254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall Builder.CreateCall2(RegisterAlias, TheClass, 241629254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall MakeConstantString(iter->second)); 241729254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall } 241829254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall } 241929254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall // Jump to end: 242029254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall Builder.CreateBr(NoAliasBB); 242129254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall 242229254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall // Missing alias registration function, just return from the function: 242329254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall Builder.SetInsertPoint(NoAliasBB); 242429254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall } 242520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Builder.CreateRetVoid(); 24269cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian 242720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return LoadFunction; 242820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 24297ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 2430679a502d462ef819e6175b58e255ca3f3391e7cfFariborz Jahanianllvm::Function *CGObjCGNU::GenerateMethod(const ObjCMethodDecl *OMD, 24311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const ObjCContainerDecl *CD) { 24321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const ObjCCategoryImplDecl *OCD = 24333e0a540b6d846178857289ec0eb8470a278d11a3Steve Naroff dyn_cast<ObjCCategoryImplDecl>(OMD->getDeclContext()); 24345f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef CategoryName = OCD ? OCD->getName() : ""; 24355f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef ClassName = CD->getName(); 24369f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Selector MethodName = OMD->getSelector(); 2437f8d49f64ef6ab7e632717a31631fc289aab69428Douglas Gregor bool isClassMethod = !OMD->isInstanceMethod(); 2438391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner 2439541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel Dunbar CodeGenTypes &Types = CGM.getTypes(); 24402acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::FunctionType *MethodTy = 2441de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall Types.GetFunctionType(Types.arrangeObjCMethodDeclaration(OMD)); 244220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::string FunctionName = SymbolNameForMethod(ClassName, CategoryName, 244320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov MethodName, isClassMethod); 244420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 2445d6c93d703541c992e06eb9a59a2d826a30da65b2Daniel Dunbar llvm::Function *Method 24461eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump = llvm::Function::Create(MethodTy, 24471eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::GlobalValue::InternalLinkage, 24481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump FunctionName, 24491eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump &TheModule); 2450391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner return Method; 2451391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner} 2452391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner 2453789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnallllvm::Constant *CGObjCGNU::GetPropertyGetFunction() { 24549f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall return GetPropertyFn; 245549f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar} 245649f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar 2457789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnallllvm::Constant *CGObjCGNU::GetPropertySetFunction() { 24589f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall return SetPropertyFn; 245949f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar} 246049f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar 2461ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenekllvm::Constant *CGObjCGNU::GetOptimizedPropertySetFunction(bool atomic, 2462ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek bool copy) { 2463ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return 0; 2464ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek} 2465ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 2466789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnallllvm::Constant *CGObjCGNU::GetGetStructFunction() { 24679f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall return GetStructPropertyFn; 24688fac25d33b13e25f512dd921d4d5a4b565f5d175David Chisnall} 2469789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnallllvm::Constant *CGObjCGNU::GetSetStructFunction() { 24709f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall return SetStructPropertyFn; 24716cc590602f41c3e98e8af0023d54296c8eca7910Fariborz Jahanian} 2472e3173021fa3bfdf7e6759d67838e385a83b2d57eFariborz Jahanianllvm::Constant *CGObjCGNU::GetCppAtomicObjectFunction() { 2473e3173021fa3bfdf7e6759d67838e385a83b2d57eFariborz Jahanian return 0; 2474e3173021fa3bfdf7e6759d67838e385a83b2d57eFariborz Jahanian} 24756cc590602f41c3e98e8af0023d54296c8eca7910Fariborz Jahanian 2476309a4368cd299cff30ab22709e2b772cf8059e45Daniel Dunbarllvm::Constant *CGObjCGNU::EnumerationMutationFunction() { 24779f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall return EnumerationMutationFn; 24782abd89c039e835e84519a4cd8a7495899a70153dAnders Carlsson} 24792abd89c039e835e84519a4cd8a7495899a70153dAnders Carlsson 24809f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallvoid CGObjCGNU::EmitSynchronizedStmt(CodeGenFunction &CGF, 2481f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall const ObjCAtSynchronizedStmt &S) { 24829735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall EmitAtSynchronizedStmt(CGF, S, SyncEnterFn, SyncExitFn); 2483f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall} 24845dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 24855dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 24869f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallvoid CGObjCGNU::EmitTryStmt(CodeGenFunction &CGF, 2487f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall const ObjCAtTryStmt &S) { 2488f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // Unlike the Apple non-fragile runtimes, which also uses 2489f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // unwind-based zero cost exceptions, the GNU Objective C runtime's 2490f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // EH support isn't a veneer over C++ EH. Instead, exception 2491f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // objects are created by __objc_exception_throw and destroyed by 2492f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // the personality function; this avoids the need for bracketing 2493f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // catch handlers with calls to __blah_begin_catch/__blah_end_catch 2494f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // (or even _Unwind_DeleteException), but probably doesn't 2495f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // interoperate very well with foreign exceptions. 24969735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // 249780558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall // In Objective-C++ mode, we actually emit something equivalent to the C++ 24989735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // exception handler. 24999735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall EmitTryCatchStmt(CGF, S, EnterCatchFn, ExitCatchFn, ExceptionReThrowFn); 25009735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall return ; 250164d5d6c5903157c521af496479d06dc26032d718Anders Carlsson} 250264d5d6c5903157c521af496479d06dc26032d718Anders Carlsson 25039f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallvoid CGObjCGNU::EmitThrowStmt(CodeGenFunction &CGF, 250449f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar const ObjCAtThrowStmt &S) { 25055dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Value *ExceptionAsObject; 25065dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 25075dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (const Expr *ThrowExpr = S.getThrowExpr()) { 25082b014d6c0c6b8ac94b416ac37dfc7931f20777a7John McCall llvm::Value *Exception = CGF.EmitObjCThrowOperand(ThrowExpr); 25091e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian ExceptionAsObject = Exception; 25105dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } else { 25111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump assert((!CGF.ObjCEHValueStack.empty() && CGF.ObjCEHValueStack.back()) && 25125dc0867af17b3bd6f567897433853b2b4767446cChris Lattner "Unexpected rethrow outside @catch block."); 25135dc0867af17b3bd6f567897433853b2b4767446cChris Lattner ExceptionAsObject = CGF.ObjCEHValueStack.back(); 25145dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 2515578faa837b552403e2002b97fdfbfde14f2448e5Benjamin Kramer ExceptionAsObject = CGF.Builder.CreateBitCast(ExceptionAsObject, IdTy); 2516c972c92f757957bf414c6195b1f2ae25a2b4dd37Eli Friedman CGF.EmitCallOrInvoke(ExceptionThrowFn, ExceptionAsObject); 2517c972c92f757957bf414c6195b1f2ae25a2b4dd37Eli Friedman CGF.Builder.CreateUnreachable(); 25185dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.ClearInsertionPoint(); 251964d5d6c5903157c521af496479d06dc26032d718Anders Carlsson} 252064d5d6c5903157c521af496479d06dc26032d718Anders Carlsson 25219f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallllvm::Value * CGObjCGNU::EmitObjCWeakRead(CodeGenFunction &CGF, 25221eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *AddrWeakObj) { 2523ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall CGBuilderTy B = CGF.Builder; 252431fc0c1a16dabd397dd3323fb0dbe7052b87abd0David Chisnall AddrWeakObj = EnforceType(B, AddrWeakObj, PtrToIdTy); 2525ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall return B.CreateCall(WeakReadFn, AddrWeakObj); 25266dc2317b59cb1180a59f6c283d96b7a5dfeb5307Fariborz Jahanian} 25276dc2317b59cb1180a59f6c283d96b7a5dfeb5307Fariborz Jahanian 25289f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallvoid CGObjCGNU::EmitObjCWeakAssign(CodeGenFunction &CGF, 25291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *src, llvm::Value *dst) { 2530ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall CGBuilderTy B = CGF.Builder; 2531ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall src = EnforceType(B, src, IdTy); 2532ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall dst = EnforceType(B, dst, PtrToIdTy); 2533ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall B.CreateCall2(WeakAssignFn, src, dst); 25343e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian} 25353e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian 25369f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallvoid CGObjCGNU::EmitObjCGlobalAssign(CodeGenFunction &CGF, 2537021a7a63984f0f912dc9e9dae2a1b3e1509a40ceFariborz Jahanian llvm::Value *src, llvm::Value *dst, 2538021a7a63984f0f912dc9e9dae2a1b3e1509a40ceFariborz Jahanian bool threadlocal) { 2539ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall CGBuilderTy B = CGF.Builder; 2540ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall src = EnforceType(B, src, IdTy); 2541ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall dst = EnforceType(B, dst, PtrToIdTy); 2542021a7a63984f0f912dc9e9dae2a1b3e1509a40ceFariborz Jahanian if (!threadlocal) 2543021a7a63984f0f912dc9e9dae2a1b3e1509a40ceFariborz Jahanian B.CreateCall2(GlobalAssignFn, src, dst); 2544021a7a63984f0f912dc9e9dae2a1b3e1509a40ceFariborz Jahanian else 2545021a7a63984f0f912dc9e9dae2a1b3e1509a40ceFariborz Jahanian // FIXME. Add threadloca assign API 2546b219cfc4d75f0a03630b7c4509ef791b7e97b2c8David Blaikie llvm_unreachable("EmitObjCGlobalAssign - Threal Local API NYI"); 254758626500527695865683d1d65053743de8770b60Fariborz Jahanian} 254858626500527695865683d1d65053743de8770b60Fariborz Jahanian 25499f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallvoid CGObjCGNU::EmitObjCIvarAssign(CodeGenFunction &CGF, 25506c7a1f364796ce1acb988714e9e42076d1ce332eFariborz Jahanian llvm::Value *src, llvm::Value *dst, 25516c7a1f364796ce1acb988714e9e42076d1ce332eFariborz Jahanian llvm::Value *ivarOffset) { 2552ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall CGBuilderTy B = CGF.Builder; 2553ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall src = EnforceType(B, src, IdTy); 2554b44eda31a214ad88616acbe28c3f0a70268adc6cDavid Chisnall dst = EnforceType(B, dst, IdTy); 2555ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall B.CreateCall3(IvarAssignFn, src, dst, ivarOffset); 25567eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanian} 25577eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanian 25589f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallvoid CGObjCGNU::EmitObjCStrongCastAssign(CodeGenFunction &CGF, 25591eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *src, llvm::Value *dst) { 2560ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall CGBuilderTy B = CGF.Builder; 2561ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall src = EnforceType(B, src, IdTy); 2562ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall dst = EnforceType(B, dst, PtrToIdTy); 2563ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall B.CreateCall2(StrongCastAssignFn, src, dst); 256458626500527695865683d1d65053743de8770b60Fariborz Jahanian} 256558626500527695865683d1d65053743de8770b60Fariborz Jahanian 25669f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallvoid CGObjCGNU::EmitGCMemmoveCollectable(CodeGenFunction &CGF, 25671eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *DestPtr, 2568082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian llvm::Value *SrcPtr, 256955bcace250e1ff366e4482714b344b8cbc8be5f3Fariborz Jahanian llvm::Value *Size) { 2570ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall CGBuilderTy B = CGF.Builder; 257168e5e1331d99140ae5dd7b27c3dd28618827dfc8David Chisnall DestPtr = EnforceType(B, DestPtr, PtrTy); 257268e5e1331d99140ae5dd7b27c3dd28618827dfc8David Chisnall SrcPtr = EnforceType(B, SrcPtr, PtrTy); 2573ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall 257455bcace250e1ff366e4482714b344b8cbc8be5f3Fariborz Jahanian B.CreateCall3(MemMoveFn, DestPtr, SrcPtr, Size); 2575082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian} 2576082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian 25779cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanianllvm::GlobalVariable *CGObjCGNU::ObjCIvarOffsetVariable( 25789cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCInterfaceDecl *ID, 25799cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCIvarDecl *Ivar) { 25809cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const std::string Name = "__objc_ivar_offset_" + ID->getNameAsString() 25819cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian + '.' + Ivar->getNameAsString(); 25829cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // Emit the variable and initialize it with what we think the correct value 25839cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // is. This allows code compiled with non-fragile ivars to work correctly 25849cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // when linked against code which isn't (most of the time). 25858a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::GlobalVariable *IvarOffsetPointer = TheModule.getNamedGlobal(Name); 25868a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall if (!IvarOffsetPointer) { 2587e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // This will cause a run-time crash if we accidentally use it. A value of 2588e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // 0 would seem more sensible, but will silently overwrite the isa pointer 2589e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // causing a great deal of confusion. 2590e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall uint64_t Offset = -1; 2591e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // We can't call ComputeIvarBaseOffset() here if we have the 2592e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // implementation, because it will create an invalid ASTRecordLayout object 2593e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // that we are then stuck with forever, so we only initialize the ivar 2594e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // offset variable with a guess if we only have the interface. The 2595e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // initializer will be reset later anyway, when we are generating the class 2596e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // description. 2597e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall if (!CGM.getContext().getObjCImplementation( 2598cb421fa690da545b58a720abe5f1c49b166dbde7Dan Gohman const_cast<ObjCInterfaceDecl *>(ID))) 2599d901da531433254210a08e8b1f9e1ad049b340aaDavid Chisnall Offset = ComputeIvarBaseOffset(CGM, ID, Ivar); 2600d901da531433254210a08e8b1f9e1ad049b340aaDavid Chisnall 260149de5289acea91c9d224c9aadd4d527e8f9fdaffDavid Chisnall llvm::ConstantInt *OffsetGuess = llvm::ConstantInt::get(Int32Ty, Offset, 2602243f108a7c5dc4733e9ef6b7b7c2cd0465cf2104Richard Trieu /*isSigned*/true); 26038a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // Don't emit the guess in non-PIC code because the linker will not be able 26048a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // to replace it with the real version for a library. In non-PIC code you 26058a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // must compile with the fragile ABI if you want to use ivars from a 26061eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // GCC-compiled class. 26075e219cf7f896873c1c1e64b9e87a7dade99debbaChandler Carruth if (CGM.getLangOpts().PICLevel || CGM.getLangOpts().PIELevel) { 26088a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::GlobalVariable *IvarOffsetGV = new llvm::GlobalVariable(TheModule, 2609917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall Int32Ty, false, 26108a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::GlobalValue::PrivateLinkage, OffsetGuess, Name+".guess"); 26118a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall IvarOffsetPointer = new llvm::GlobalVariable(TheModule, 26128a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall IvarOffsetGV->getType(), false, llvm::GlobalValue::LinkOnceAnyLinkage, 26138a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall IvarOffsetGV, Name); 26148a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall } else { 26158a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall IvarOffsetPointer = new llvm::GlobalVariable(TheModule, 26163c0ef8cc0dc246bd3083e8cdd63005e8873d36d2Benjamin Kramer llvm::Type::getInt32PtrTy(VMContext), false, 26173c0ef8cc0dc246bd3083e8cdd63005e8873d36d2Benjamin Kramer llvm::GlobalValue::ExternalLinkage, 0, Name); 26188a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall } 26199cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 26208a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall return IvarOffsetPointer; 26219cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian} 26229cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian 26239f6614e3c5d34998dd5a5cc6faf0746dcd611d49David ChisnallLValue CGObjCGNU::EmitObjCValueForIvar(CodeGenFunction &CGF, 2624598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian QualType ObjectTy, 2625598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian llvm::Value *BaseValue, 2626598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian const ObjCIvarDecl *Ivar, 2627598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian unsigned CVRQualifiers) { 2628c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall const ObjCInterfaceDecl *ID = 2629c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall ObjectTy->getAs<ObjCObjectType>()->getInterface(); 26309777687562c338601c2f17906e65e1c1a0aad96fDaniel Dunbar return EmitValueForIvarAtOffset(CGF, ID, BaseValue, Ivar, CVRQualifiers, 26319777687562c338601c2f17906e65e1c1a0aad96fDaniel Dunbar EmitIvarOffset(CGF, ID, Ivar)); 26320bb20361a321593887f067515dd04cf109f4c74aFariborz Jahanian} 2633bb1c8600218b3244340331165fc7cba7bf227655Mike Stump 26349cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanianstatic const ObjCInterfaceDecl *FindIvarInterface(ASTContext &Context, 26359cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCInterfaceDecl *OID, 26369cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCIvarDecl *OIVD) { 2637db8264e4c5ffd7af6fbad4ca4306bd382bb02691Jordy Rose for (const ObjCIvarDecl *next = OID->all_declared_ivar_begin(); next; 2638db8264e4c5ffd7af6fbad4ca4306bd382bb02691Jordy Rose next = next->getNextIvar()) { 2639db8264e4c5ffd7af6fbad4ca4306bd382bb02691Jordy Rose if (OIVD == next) 26409cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian return OID; 26419cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 26421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 26439cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // Otherwise check in the super class. 26449cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian if (const ObjCInterfaceDecl *Super = OID->getSuperClass()) 26459cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian return FindIvarInterface(Context, Super, OIVD); 26461eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 26479cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian return 0; 26489cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian} 26490bb20361a321593887f067515dd04cf109f4c74aFariborz Jahanian 26509f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallllvm::Value *CGObjCGNU::EmitIvarOffset(CodeGenFunction &CGF, 26512a03192a02dbf4fdff438d1e658356bde871aba4Daniel Dunbar const ObjCInterfaceDecl *Interface, 2652f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian const ObjCIvarDecl *Ivar) { 2653260611a32535c851237926bfcf78869b13c07d5bJohn McCall if (CGM.getLangOpts().ObjCRuntime.isNonFragile()) { 26549cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian Interface = FindIvarInterface(CGM.getContext(), Interface, Ivar); 265563ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall if (RuntimeVersion < 10) 265663ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall return CGF.Builder.CreateZExtOrBitCast( 265763ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall CGF.Builder.CreateLoad(CGF.Builder.CreateLoad( 265863ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall ObjCIvarOffsetVariable(Interface, Ivar), false, "ivar")), 265963ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall PtrDiffTy); 266063ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall std::string name = "__objc_ivar_offset_value_" + 266163ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall Interface->getNameAsString() +"." + Ivar->getNameAsString(); 266263ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall llvm::Value *Offset = TheModule.getGlobalVariable(name); 266363ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall if (!Offset) 266463ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall Offset = new llvm::GlobalVariable(TheModule, IntTy, 26653fc81d32314eca98b51846f493a8bc77cf14a701David Chisnall false, llvm::GlobalValue::LinkOnceAnyLinkage, 26663fc81d32314eca98b51846f493a8bc77cf14a701David Chisnall llvm::Constant::getNullValue(IntTy), name); 26676614845b4f6724da8c6aca14ea720dbd157883a7David Chisnall Offset = CGF.Builder.CreateLoad(Offset); 26686614845b4f6724da8c6aca14ea720dbd157883a7David Chisnall if (Offset->getType() != PtrDiffTy) 26696614845b4f6724da8c6aca14ea720dbd157883a7David Chisnall Offset = CGF.Builder.CreateZExtOrBitCast(Offset, PtrDiffTy); 26706614845b4f6724da8c6aca14ea720dbd157883a7David Chisnall return Offset; 26719cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 26729777687562c338601c2f17906e65e1c1a0aad96fDaniel Dunbar uint64_t Offset = ComputeIvarBaseOffset(CGF.CGM, Interface, Ivar); 2673243f108a7c5dc4733e9ef6b7b7c2cd0465cf2104Richard Trieu return llvm::ConstantInt::get(PtrDiffTy, Offset, /*isSigned*/true); 2674f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian} 2675f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian 26769f6614e3c5d34998dd5a5cc6faf0746dcd611d49David ChisnallCGObjCRuntime * 26779f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallclang::CodeGen::CreateGNUObjCRuntime(CodeGenModule &CGM) { 2678260611a32535c851237926bfcf78869b13c07d5bJohn McCall switch (CGM.getLangOpts().ObjCRuntime.getKind()) { 267911d3f4cc27e6b923fc32481dc1bb5ec46c7d1f4bDavid Chisnall case ObjCRuntime::GNUstep: 26809f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall return new CGObjCGNUstep(CGM); 2681260611a32535c851237926bfcf78869b13c07d5bJohn McCall 268211d3f4cc27e6b923fc32481dc1bb5ec46c7d1f4bDavid Chisnall case ObjCRuntime::GCC: 2683260611a32535c851237926bfcf78869b13c07d5bJohn McCall return new CGObjCGCC(CGM); 2684260611a32535c851237926bfcf78869b13c07d5bJohn McCall 2685f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall case ObjCRuntime::ObjFW: 2686f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall return new CGObjCObjFW(CGM); 2687f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall 2688260611a32535c851237926bfcf78869b13c07d5bJohn McCall case ObjCRuntime::FragileMacOSX: 2689260611a32535c851237926bfcf78869b13c07d5bJohn McCall case ObjCRuntime::MacOSX: 2690260611a32535c851237926bfcf78869b13c07d5bJohn McCall case ObjCRuntime::iOS: 2691260611a32535c851237926bfcf78869b13c07d5bJohn McCall llvm_unreachable("these runtimes are not GNU runtimes"); 2692260611a32535c851237926bfcf78869b13c07d5bJohn McCall } 2693260611a32535c851237926bfcf78869b13c07d5bJohn McCall llvm_unreachable("bad runtime"); 26940f984268b05edab2cc555a427c441baa9c252658Chris Lattner} 2695