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" 1836f893c1efe367f929d92c8b125f964c22ba189eJohn McCall#include "CGCleanup.h" 1955fc873017f10f6f566b182b70f6fc22aefa3464Chandler Carruth#include "CodeGenFunction.h" 2055fc873017f10f6f566b182b70f6fc22aefa3464Chandler Carruth#include "CodeGenModule.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/FileManager.h" 2755fc873017f10f6f566b182b70f6fc22aefa3464Chandler Carruth#include "clang/Basic/SourceManager.h" 280f984268b05edab2cc555a427c441baa9c252658Chris Lattner#include "llvm/ADT/SmallVector.h" 2920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov#include "llvm/ADT/StringMap.h" 303b844ba7d5be205a9b4f5f0b0d1b7978977f4b8cChandler Carruth#include "llvm/IR/DataLayout.h" 313b844ba7d5be205a9b4f5f0b0d1b7978977f4b8cChandler Carruth#include "llvm/IR/Intrinsics.h" 323b844ba7d5be205a9b4f5f0b0d1b7978977f4b8cChandler Carruth#include "llvm/IR/LLVMContext.h" 333b844ba7d5be205a9b4f5f0b0d1b7978977f4b8cChandler Carruth#include "llvm/IR/Module.h" 3480558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall#include "llvm/Support/CallSite.h" 357ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar#include "llvm/Support/Compiler.h" 365f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner#include <cstdarg> 37e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner 38e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner 39dce1406f1c1f572cfd61c494546572d63461c741Chris Lattnerusing namespace clang; 4046f45b9bec4a265ad8400a538e5ec3a5683617f1Daniel Dunbarusing namespace CodeGen; 4120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 420f984268b05edab2cc555a427c441baa9c252658Chris Lattner 430f984268b05edab2cc555a427c441baa9c252658Chris Lattnernamespace { 4481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// Class that lazily initialises the runtime function. Avoids inserting the 4581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// types and the function declaration into a module if they're not used, and 4681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// avoids constructing the type more than once if it's used more than once. 479f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallclass LazyRuntimeFunction { 489f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall CodeGenModule *CGM; 499cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner std::vector<llvm::Type*> ArgTys; 509f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall const char *FunctionName; 51789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnall llvm::Constant *Function; 529f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall public: 5381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Constructor leaves this class uninitialized, because it is intended to 5481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// be used as a field in another class and not all of the types that are 5581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// used as arguments will necessarily be available at construction time. 569f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction() : CGM(0), FunctionName(0), Function(0) {} 579f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 5881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Initialises the lazy function with the name, return type, and the types 5981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// of the arguments. 609f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall END_WITH_NULL 619f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall void init(CodeGenModule *Mod, const char *name, 629cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::Type *RetTy, ...) { 639f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall CGM =Mod; 649f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall FunctionName = name; 659f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Function = 0; 669735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall ArgTys.clear(); 679f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall va_list Args; 689f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall va_start(Args, RetTy); 699cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner while (llvm::Type *ArgTy = va_arg(Args, llvm::Type*)) 709f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall ArgTys.push_back(ArgTy); 719f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall va_end(Args); 729f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // Push the return type on at the end so we can pop it off easily 739f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall ArgTys.push_back(RetTy); 749f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall } 7581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Overloaded cast operator, allows the class to be implicitly cast to an 7681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM constant. 77789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnall operator llvm::Constant*() { 789f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall if (!Function) { 799735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall if (0 == FunctionName) return 0; 809735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // We put the return type on the end of the vector, so pop it back off 812acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Type *RetTy = ArgTys.back(); 829f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall ArgTys.pop_back(); 839f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::FunctionType *FTy = llvm::FunctionType::get(RetTy, ArgTys, false); 849f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Function = 85789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnall cast<llvm::Constant>(CGM->CreateRuntimeFunction(FTy, FunctionName)); 869735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // We won't need to use the types again, so we may as well clean up the 879735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // vector now 889f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall ArgTys.resize(0); 899f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall } 909f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall return Function; 919f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall } 92789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnall operator llvm::Function*() { 935f0bcc4c3f4a75375a3571e71bffebf603f4ca67David Chisnall return cast<llvm::Function>((llvm::Constant*)*this); 94789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnall } 955f0bcc4c3f4a75375a3571e71bffebf603f4ca67David Chisnall 969f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall}; 979f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 989f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 9981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// GNU Objective-C runtime code generation. This class implements the parts of 100f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall/// Objective-C support that are specific to the GNU family of runtimes (GCC, 101f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall/// GNUstep and ObjFW). 1029f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallclass CGObjCGNU : public CGObjCRuntime { 103c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnallprotected: 10481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// The LLVM module into which output is inserted 1050f984268b05edab2cc555a427c441baa9c252658Chris Lattner llvm::Module &TheModule; 10681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// strut objc_super. Used for sending messages to super. This structure 10781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// contains the receiver (object) and the expected class. 1082acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::StructType *ObjCSuperTy; 10981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// struct objc_super*. The type of the argument to the superclass message 11081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// lookup functions. 1112acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::PointerType *PtrToObjCSuperTy; 11281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM type for selectors. Opaque pointer (i8*) unless a header declaring 11381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// SEL is included in a header somewhere, in which case it will be whatever 11481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// type is declared in that header, most likely {i8*, i8*}. 1159cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::PointerType *SelectorTy; 11681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM i8 type. Cached here to avoid repeatedly getting it in all of the 11781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// places where it's used 1182acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::IntegerType *Int8Ty; 11981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Pointer to i8 - LLVM type of char*, for all of the places where the 12081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// runtime needs to deal with C strings. 1219cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::PointerType *PtrToInt8Ty; 12281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Instance Method Pointer type. This is a pointer to a function that takes, 12381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// at a minimum, an object and a selector, and is the generic type for 12481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Objective-C methods. Due to differences between variadic / non-variadic 12581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// calling conventions, it must always be cast to the correct type before 12681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// actually being used. 1279cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::PointerType *IMPTy; 12881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Type of an untyped Objective-C object. Clang treats id as a built-in type 12981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// when compiling Objective-C code, so this may be an opaque pointer (i8*), 13081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// but if the runtime header declaring it is included then it may be a 13181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// pointer to a structure. 1329cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::PointerType *IdTy; 13381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Pointer to a pointer to an Objective-C object. Used in the new ABI 13481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// message lookup function and some GC-related functions. 1352acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::PointerType *PtrToIdTy; 13681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// The clang type of id. Used when using the clang CGCall infrastructure to 13781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// call Objective-C methods. 138ead608af31b6c9abeae1ca6d0b75094dac4641c0John McCall CanQualType ASTIdTy; 13981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM type for C int type. 1409cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::IntegerType *IntTy; 14181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM type for an opaque pointer. This is identical to PtrToInt8Ty, but is 14281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// used in the code to document the difference between i8* meaning a pointer 14381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// to a C string and i8* meaning a pointer to some opaque type. 1449cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::PointerType *PtrTy; 14581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM type for C long type. The runtime uses this in a lot of places where 14681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// it should be using intptr_t, but we can't fix this without breaking 14781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// compatibility with GCC... 148ef6de3da8572607f786303c07150daa6e140ab19Jay Foad llvm::IntegerType *LongTy; 14981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM type for C size_t. Used in various runtime data structures. 1502acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::IntegerType *SizeTy; 15149de5289acea91c9d224c9aadd4d527e8f9fdaffDavid Chisnall /// LLVM type for C intptr_t. 15249de5289acea91c9d224c9aadd4d527e8f9fdaffDavid Chisnall llvm::IntegerType *IntPtrTy; 15381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM type for C ptrdiff_t. Mainly used in property accessor functions. 1542acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::IntegerType *PtrDiffTy; 15581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM type for C int*. Used for GCC-ABI-compatible non-fragile instance 15681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// variables. 1572acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::PointerType *PtrToIntTy; 15881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM type for Objective-C BOOL type. 1592acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Type *BoolTy; 160917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// 32-bit integer type, to save us needing to look it up every time it's used. 161917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::IntegerType *Int32Ty; 162917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// 64-bit integer type, to save us needing to look it up every time it's used. 163917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::IntegerType *Int64Ty; 16481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Metadata kind used to tie method lookups to message sends. The GNUstep 16581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// runtime provides some LLVM passes that can use this to do things like 16681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// automatic IMP caching and speculative inlining. 167c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall unsigned msgSendMDKind; 16881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Helper function that generates a constant string and returns a pointer to 16981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// the start of the string. The result of this function can be used anywhere 17081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// where the C code specifies const char*. 1719735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::Constant *MakeConstantString(const std::string &Str, 1729735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall const std::string &Name="") { 1739735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::Constant *ConstStr = CGM.GetAddrOfConstantCString(Str, Name.c_str()); 174a5c04344fa70d6eec34344760c1fe511e16f2d76Jay Foad return llvm::ConstantExpr::getGetElementPtr(ConstStr, Zeros); 1759735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall } 17681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Emits a linkonce_odr string, whose name is the prefix followed by the 17781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// string value. This allows the linker to combine the strings between 17881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// different modules. Used for EH typeinfo names, selector strings, and a 17981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// few other things. 1809735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::Constant *ExportUniqueString(const std::string &Str, 1819735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall const std::string prefix) { 1829735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall std::string name = prefix + Str; 1839735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::Constant *ConstStr = TheModule.getGlobalVariable(name); 1849735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall if (!ConstStr) { 18594010695f7fce626e41ef045b60def9c912e9ce8Chris Lattner llvm::Constant *value = llvm::ConstantDataArray::getString(VMContext,Str); 1869735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall ConstStr = new llvm::GlobalVariable(TheModule, value->getType(), true, 1879735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::GlobalValue::LinkOnceODRLinkage, value, prefix + Str); 1889735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall } 189a5c04344fa70d6eec34344760c1fe511e16f2d76Jay Foad return llvm::ConstantExpr::getGetElementPtr(ConstStr, Zeros); 1909735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall } 19181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Generates a global structure, initialized by the elements in the vector. 19281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// The element types must match the types of the structure elements in the 19381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// first argument. 1942acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::GlobalVariable *MakeGlobal(llvm::StructType *Ty, 195cfa88f893915ceb8ae4ce2f17c46c24a4d67502fDmitri Gribenko ArrayRef<llvm::Constant *> V, 1965f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef Name="", 1979735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::GlobalValue::LinkageTypes linkage 1989735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall =llvm::GlobalValue::InternalLinkage) { 1999735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::Constant *C = llvm::ConstantStruct::get(Ty, V); 2009735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall return new llvm::GlobalVariable(TheModule, Ty, false, 2019735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall linkage, C, Name); 2029735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall } 20381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Generates a global array. The vector must contain the same number of 20481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// elements that the array type declares, of the type specified as the array 20581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// element type. 2062acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::GlobalVariable *MakeGlobal(llvm::ArrayType *Ty, 207cfa88f893915ceb8ae4ce2f17c46c24a4d67502fDmitri Gribenko ArrayRef<llvm::Constant *> V, 2085f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef Name="", 2099735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::GlobalValue::LinkageTypes linkage 2109735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall =llvm::GlobalValue::InternalLinkage) { 2119735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::Constant *C = llvm::ConstantArray::get(Ty, V); 2129735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall return new llvm::GlobalVariable(TheModule, Ty, false, 2139735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall linkage, C, Name); 2149735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall } 21581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Generates a global array, inferring the array type from the specified 21681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// element type and the size of the initialiser. 2172acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::GlobalVariable *MakeGlobalArray(llvm::Type *Ty, 218cfa88f893915ceb8ae4ce2f17c46c24a4d67502fDmitri Gribenko ArrayRef<llvm::Constant *> V, 2195f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef Name="", 2209735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::GlobalValue::LinkageTypes linkage 2219735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall =llvm::GlobalValue::InternalLinkage) { 2229735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::ArrayType *ArrayTy = llvm::ArrayType::get(Ty, V.size()); 2239735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall return MakeGlobal(ArrayTy, V, Name, linkage); 2249735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall } 225891dac73bdb090ff845982e4334f5b4c18353dbeDavid Chisnall /// Returns a property name and encoding string. 226891dac73bdb090ff845982e4334f5b4c18353dbeDavid Chisnall llvm::Constant *MakePropertyEncodingString(const ObjCPropertyDecl *PD, 227891dac73bdb090ff845982e4334f5b4c18353dbeDavid Chisnall const Decl *Container) { 228de38cb1fc8429e7adbd59308d19628cfda5aeee6David Chisnall const ObjCRuntime &R = CGM.getLangOpts().ObjCRuntime; 229891dac73bdb090ff845982e4334f5b4c18353dbeDavid Chisnall if ((R.getKind() == ObjCRuntime::GNUstep) && 230891dac73bdb090ff845982e4334f5b4c18353dbeDavid Chisnall (R.getVersion() >= VersionTuple(1, 6))) { 231891dac73bdb090ff845982e4334f5b4c18353dbeDavid Chisnall std::string NameAndAttributes; 232891dac73bdb090ff845982e4334f5b4c18353dbeDavid Chisnall std::string TypeStr; 233891dac73bdb090ff845982e4334f5b4c18353dbeDavid Chisnall CGM.getContext().getObjCEncodingForPropertyDecl(PD, Container, TypeStr); 234891dac73bdb090ff845982e4334f5b4c18353dbeDavid Chisnall NameAndAttributes += '\0'; 235891dac73bdb090ff845982e4334f5b4c18353dbeDavid Chisnall NameAndAttributes += TypeStr.length() + 3; 236891dac73bdb090ff845982e4334f5b4c18353dbeDavid Chisnall NameAndAttributes += TypeStr; 237891dac73bdb090ff845982e4334f5b4c18353dbeDavid Chisnall NameAndAttributes += '\0'; 238891dac73bdb090ff845982e4334f5b4c18353dbeDavid Chisnall NameAndAttributes += PD->getNameAsString(); 239de38cb1fc8429e7adbd59308d19628cfda5aeee6David Chisnall NameAndAttributes += '\0'; 240891dac73bdb090ff845982e4334f5b4c18353dbeDavid Chisnall return llvm::ConstantExpr::getGetElementPtr( 241891dac73bdb090ff845982e4334f5b4c18353dbeDavid Chisnall CGM.GetAddrOfConstantString(NameAndAttributes), Zeros); 242891dac73bdb090ff845982e4334f5b4c18353dbeDavid Chisnall } 243891dac73bdb090ff845982e4334f5b4c18353dbeDavid Chisnall return MakeConstantString(PD->getNameAsString()); 244891dac73bdb090ff845982e4334f5b4c18353dbeDavid Chisnall } 245de38cb1fc8429e7adbd59308d19628cfda5aeee6David Chisnall /// Push the property attributes into two structure fields. 246de38cb1fc8429e7adbd59308d19628cfda5aeee6David Chisnall void PushPropertyAttributes(std::vector<llvm::Constant*> &Fields, 247de38cb1fc8429e7adbd59308d19628cfda5aeee6David Chisnall ObjCPropertyDecl *property, bool isSynthesized=true, bool 248de38cb1fc8429e7adbd59308d19628cfda5aeee6David Chisnall isDynamic=true) { 249de38cb1fc8429e7adbd59308d19628cfda5aeee6David Chisnall int attrs = property->getPropertyAttributes(); 250de38cb1fc8429e7adbd59308d19628cfda5aeee6David Chisnall // For read-only properties, clear the copy and retain flags 251de38cb1fc8429e7adbd59308d19628cfda5aeee6David Chisnall if (attrs & ObjCPropertyDecl::OBJC_PR_readonly) { 252de38cb1fc8429e7adbd59308d19628cfda5aeee6David Chisnall attrs &= ~ObjCPropertyDecl::OBJC_PR_copy; 253de38cb1fc8429e7adbd59308d19628cfda5aeee6David Chisnall attrs &= ~ObjCPropertyDecl::OBJC_PR_retain; 254de38cb1fc8429e7adbd59308d19628cfda5aeee6David Chisnall attrs &= ~ObjCPropertyDecl::OBJC_PR_weak; 255de38cb1fc8429e7adbd59308d19628cfda5aeee6David Chisnall attrs &= ~ObjCPropertyDecl::OBJC_PR_strong; 256de38cb1fc8429e7adbd59308d19628cfda5aeee6David Chisnall } 257de38cb1fc8429e7adbd59308d19628cfda5aeee6David Chisnall // The first flags field has the same attribute values as clang uses internally 258de38cb1fc8429e7adbd59308d19628cfda5aeee6David Chisnall Fields.push_back(llvm::ConstantInt::get(Int8Ty, attrs & 0xff)); 259de38cb1fc8429e7adbd59308d19628cfda5aeee6David Chisnall attrs >>= 8; 260de38cb1fc8429e7adbd59308d19628cfda5aeee6David Chisnall attrs <<= 2; 261de38cb1fc8429e7adbd59308d19628cfda5aeee6David Chisnall // For protocol properties, synthesized and dynamic have no meaning, so we 262de38cb1fc8429e7adbd59308d19628cfda5aeee6David Chisnall // reuse these flags to indicate that this is a protocol property (both set 263de38cb1fc8429e7adbd59308d19628cfda5aeee6David Chisnall // has no meaning, as a property can't be both synthesized and dynamic) 264de38cb1fc8429e7adbd59308d19628cfda5aeee6David Chisnall attrs |= isSynthesized ? (1<<0) : 0; 265de38cb1fc8429e7adbd59308d19628cfda5aeee6David Chisnall attrs |= isDynamic ? (1<<1) : 0; 266de38cb1fc8429e7adbd59308d19628cfda5aeee6David Chisnall // The second field is the next four fields left shifted by two, with the 267de38cb1fc8429e7adbd59308d19628cfda5aeee6David Chisnall // low bit set to indicate whether the field is synthesized or dynamic. 268de38cb1fc8429e7adbd59308d19628cfda5aeee6David Chisnall Fields.push_back(llvm::ConstantInt::get(Int8Ty, attrs & 0xff)); 269de38cb1fc8429e7adbd59308d19628cfda5aeee6David Chisnall // Two padding fields 270de38cb1fc8429e7adbd59308d19628cfda5aeee6David Chisnall Fields.push_back(llvm::ConstantInt::get(Int8Ty, 0)); 271de38cb1fc8429e7adbd59308d19628cfda5aeee6David Chisnall Fields.push_back(llvm::ConstantInt::get(Int8Ty, 0)); 272de38cb1fc8429e7adbd59308d19628cfda5aeee6David Chisnall } 27381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Ensures that the value has the required type, by inserting a bitcast if 27481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// required. This function lets us avoid inserting bitcasts that are 27581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// redundant. 276bd7370a78604e9a20d698bfe328c1e43f12a0613John McCall llvm::Value* EnforceType(CGBuilderTy &B, llvm::Value *V, llvm::Type *Ty) { 277c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall if (V->getType() == Ty) return V; 278c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall return B.CreateBitCast(V, Ty); 279c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } 280c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // Some zeros used for GEPs in lots of places. 281c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Constant *Zeros[2]; 28281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Null pointer value. Mainly used as a terminator in various arrays. 283c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Constant *NULLPtr; 28481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM context. 285c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::LLVMContext &VMContext; 286c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnallprivate: 28781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Placeholder for the class. Lots of things refer to the class before we've 28881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// actually emitted it. We use this alias as a placeholder, and then replace 28981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// it with a pointer to the class structure before finally emitting the 29081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// module. 2915efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar llvm::GlobalAlias *ClassPtrAlias; 29281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Placeholder for the metaclass. Lots of things refer to the class before 29381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// we've / actually emitted it. We use this alias as a placeholder, and then 29481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// replace / it with a pointer to the metaclass structure before finally 29581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// emitting the / module. 2965efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar llvm::GlobalAlias *MetaClassPtrAlias; 29781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// All of the classes that have been generated for this compilation units. 29820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Classes; 29981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// All of the categories that have been generated for this compilation units. 30020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Categories; 30181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// All of the Objective-C constant strings that have been generated for this 30281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// compilation units. 30320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> ConstantStrings; 30481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Map from string values to Objective-C constant strings in the output. 30581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Used to prevent emitting Objective-C strings more than once. This should 30681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// not be required at all - CodeGenModule should manage this list. 30748272a078e54d501cb05edd797c54b8e82ceb520David Chisnall llvm::StringMap<llvm::Constant*> ObjCStrings; 30881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// All of the protocols that have been declared. 30920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StringMap<llvm::Constant*> ExistingProtocols; 31081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// For each variant of a selector, we store the type encoding and a 31181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// placeholder value. For an untyped selector, the type will be the empty 31281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// string. Selector references are all done via the module's selector table, 31381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// so we create an alias as a placeholder and then replace it with the real 31481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// value later. 3159f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall typedef std::pair<std::string, llvm::GlobalAlias*> TypedSelector; 31681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Type of the selector map. This is roughly equivalent to the structure 31781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// used in the GNUstep runtime, which maintains a list of all of the valid 31881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// types for a selector in a table. 3195f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner typedef llvm::DenseMap<Selector, SmallVector<TypedSelector, 2> > 3209f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SelectorMap; 32181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// A map from selectors to selector types. This allows us to emit all 32281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// selectors of the same name and type together. 3239f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SelectorMap SelectorTable; 3249f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 32581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Selectors related to memory management. When compiling in GC mode, we 32681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// omit these. 327ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall Selector RetainSel, ReleaseSel, AutoreleaseSel; 32881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Runtime functions used for memory management in GC mode. Note that clang 32981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// supports code generation for calling these functions, but neither GNU 33081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// runtime actually supports this API properly yet. 3319f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction IvarAssignFn, StrongCastAssignFn, MemMoveFn, WeakReadFn, 3329f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall WeakAssignFn, GlobalAssignFn; 3339f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 33429254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall typedef std::pair<std::string, std::string> ClassAliasPair; 33529254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall /// All classes that have aliases set for them. 33629254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall std::vector<ClassAliasPair> ClassAliases; 33729254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall 3389735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnallprotected: 33981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Function used for throwing Objective-C exceptions. 3409f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction ExceptionThrowFn; 341809d1be9820039b4cf6efa48246a0d70ffa13394James Dennett /// Function used for rethrowing exceptions, used at the end of \@finally or 342809d1be9820039b4cf6efa48246a0d70ffa13394James Dennett /// \@synchronize blocks. 3439735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall LazyRuntimeFunction ExceptionReThrowFn; 34481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Function called when entering a catch function. This is required for 34581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// differentiating Objective-C exceptions and foreign exceptions. 3469735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall LazyRuntimeFunction EnterCatchFn; 34781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Function called when exiting from a catch block. Used to do exception 34881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// cleanup. 3499735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall LazyRuntimeFunction ExitCatchFn; 350809d1be9820039b4cf6efa48246a0d70ffa13394James Dennett /// Function called when entering an \@synchronize block. Acquires the lock. 3519f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction SyncEnterFn; 352809d1be9820039b4cf6efa48246a0d70ffa13394James Dennett /// Function called when exiting an \@synchronize block. Releases the lock. 3539f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction SyncExitFn; 3549f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 3559735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnallprivate: 3569735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall 35781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Function called if fast enumeration detects that the collection is 35881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// modified during the update. 3599f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction EnumerationMutationFn; 36081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Function for implementing synthesized property getters that return an 36181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// object. 3629f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction GetPropertyFn; 36381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Function for implementing synthesized property setters that return an 36481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// object. 3659f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction SetPropertyFn; 36681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Function used for non-object declared property getters. 3679f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction GetStructPropertyFn; 36881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Function used for non-object declared property setters. 3699f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction SetStructPropertyFn; 3709f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 37181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// The version of the runtime that this class targets. Must match the 37281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// version in the runtime. 373a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall int RuntimeVersion; 37481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// The version of the protocol class. Used to differentiate between ObjC1 37581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// and ObjC2 protocols. Objective-C 1 protocols can not contain optional 37681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// components and can not contain declared properties. We always emit 37781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Objective-C 2 property structures, but we have to pretend that they're 37881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Objective-C 1 property structures when targeting the GCC runtime or it 37981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// will abort. 3809f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall const int ProtocolVersion; 38120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovprivate: 38281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Generates an instance variable list structure. This is a structure 38381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// containing a size and an array of structures containing instance variable 38481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// metadata. This is used purely for introspection in the fragile ABI. In 38581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// the non-fragile ABI, it's used for instance variable fixup. 386795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling llvm::Constant *GenerateIvarList(ArrayRef<llvm::Constant *> IvarNames, 387795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling ArrayRef<llvm::Constant *> IvarTypes, 388795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling ArrayRef<llvm::Constant *> IvarOffsets); 38981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Generates a method list structure. This is a structure containing a size 39081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// and an array of structures containing method metadata. 39181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// 39281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// This structure is used by both classes and categories, and contains a next 39381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// pointer allowing them to be chained together in a linked list. 3945f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner llvm::Constant *GenerateMethodList(const StringRef &ClassName, 3955f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner const StringRef &CategoryName, 396795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling ArrayRef<Selector> MethodSels, 397795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling ArrayRef<llvm::Constant *> MethodTypes, 39820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov bool isClassMethodList); 399809d1be9820039b4cf6efa48246a0d70ffa13394James Dennett /// Emits an empty protocol. This is used for \@protocol() where no protocol 40081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// is found. The runtime will (hopefully) fix up the pointer to refer to the 40181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// real protocol. 402f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::Constant *GenerateEmptyProtocol(const std::string &ProtocolName); 40381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Generates a list of property metadata structures. This follows the same 40481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// pattern as method and instance variable metadata lists. 405d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *GeneratePropertyList(const ObjCImplementationDecl *OID, 4065f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVectorImpl<Selector> &InstanceMethodSels, 4075f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVectorImpl<llvm::Constant*> &InstanceMethodTypes); 40881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Generates a list of referenced protocols. Classes, categories, and 40981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// protocols all use this structure. 410795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling llvm::Constant *GenerateProtocolList(ArrayRef<std::string> Protocols); 41181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// To ensure that all protocols are seen by the runtime, we add a category on 41281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// a class defined in the runtime, declaring no methods, but adopting the 41381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// protocols. This is a horribly ugly hack, but it allows us to collect all 41481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// of the protocols without changing the ABI. 415c4a77906c259cba58c147d8468c406a430ecdcbbDmitri Gribenko void GenerateProtocolHolderCategory(); 41681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Generates a class structure. 41720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateClassStructure( 41820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MetaClass, 41920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SuperClass, 42020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov unsigned info, 421d002cc6fc5b72bf00e3b7b4571ccf0f23c789b4bChris Lattner const char *Name, 42220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Version, 42320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *InstanceSize, 42420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *IVars, 42520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Methods, 426d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *Protocols, 427d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *IvarOffsets, 4288c757f9ea33dccff4da7810e0c1bda59c19ddc9aDavid Chisnall llvm::Constant *Properties, 429917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::Constant *StrongIvarBitmap, 430917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::Constant *WeakIvarBitmap, 4318c757f9ea33dccff4da7810e0c1bda59c19ddc9aDavid Chisnall bool isMeta=false); 43281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Generates a method list. This is used by protocols to define the required 43381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// and optional methods. 43420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateProtocolMethodList( 435795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling ArrayRef<llvm::Constant *> MethodNames, 436795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling ArrayRef<llvm::Constant *> MethodTypes); 43781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Returns a selector with the specified type encoding. An empty string is 43881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// used to return an untyped selector (with the types field set to NULL). 439bd7370a78604e9a20d698bfe328c1e43f12a0613John McCall llvm::Value *GetSelector(CodeGenFunction &CGF, Selector Sel, 4409f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall const std::string &TypeEncoding, bool lval); 44181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Returns the variable used to store the offset of an instance variable. 4429cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian llvm::GlobalVariable *ObjCIvarOffsetVariable(const ObjCInterfaceDecl *ID, 4439cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCIvarDecl *Ivar); 44481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Emits a reference to a class. This allows the linker to object if there 44581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// is no class of the matching name. 446f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCallprotected: 4472a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner void EmitClassRef(const std::string &className); 448c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall /// Emits a pointer to the named class 449bd7370a78604e9a20d698bfe328c1e43f12a0613John McCall virtual llvm::Value *GetClassNamed(CodeGenFunction &CGF, 450f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall const std::string &Name, bool isWeak); 45181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Looks up the method for sending a message to the specified object. This 45281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// mechanism differs between the GCC and GNU runtimes, so this method must be 45381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// overridden in subclasses. 454c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall virtual llvm::Value *LookupIMP(CodeGenFunction &CGF, 455c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *&Receiver, 456c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *cmd, 45711311eaf6093a5374f94047df354d4c62d68c611Eli Friedman llvm::MDNode *node, 45811311eaf6093a5374f94047df354d4c62d68c611Eli Friedman MessageSendInfo &MSI) = 0; 459917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// Looks up the method for sending a message to a superclass. This 460917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// mechanism differs between the GCC and GNU runtimes, so this method must 461917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// be overridden in subclasses. 462c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall virtual llvm::Value *LookupIMPSuper(CodeGenFunction &CGF, 463c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *ObjCSuper, 46411311eaf6093a5374f94047df354d4c62d68c611Eli Friedman llvm::Value *cmd, 46511311eaf6093a5374f94047df354d4c62d68c611Eli Friedman MessageSendInfo &MSI) = 0; 466917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// Libobjc2 uses a bitfield representation where small(ish) bitfields are 467917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// stored in a 64-bit value with the low bit set to 1 and the remaining 63 468917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// bits set to their values, LSB first, while larger ones are stored in a 469917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// structure of this / form: 470917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// 471917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// struct { int32_t length; int32_t values[length]; }; 472917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// 473917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// The values in the array are stored in host-endian format, with the least 474917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// significant bit being assumed to come first in the bitfield. Therefore, 475917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// a bitfield with the 64th bit set will be (int64_t)&{ 2, [0, 1<<31] }, 476917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// while a bitfield / with the 63rd bit set will be 1<<64. 477795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling llvm::Constant *MakeBitField(ArrayRef<bool> bits); 4780f984268b05edab2cc555a427c441baa9c252658Chris Lattnerpublic: 4799f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall CGObjCGNU(CodeGenModule &cgm, unsigned runtimeABIVersion, 4809f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall unsigned protocolClassVersion); 4819f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 4820d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall virtual llvm::Constant *GenerateConstantString(const StringLiteral *); 4839f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 4849f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual RValue 4859f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall GenerateMessageSend(CodeGenFunction &CGF, 486ef072fd2f3347cfd857d6eb787b245b950771430John McCall ReturnValueSlot Return, 4877f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar QualType ResultType, 4887f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar Selector Sel, 489f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar llvm::Value *Receiver, 490df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian const CallArgList &CallArgs, 491c6cd5fd3eae71f8841504a396563343cfaaf503eDavid Chisnall const ObjCInterfaceDecl *Class, 492df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian const ObjCMethodDecl *Method); 4939f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual RValue 4949f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall GenerateMessageSendSuper(CodeGenFunction &CGF, 495ef072fd2f3347cfd857d6eb787b245b950771430John McCall ReturnValueSlot Return, 4967f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar QualType ResultType, 4977f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar Selector Sel, 498f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar const ObjCInterfaceDecl *Class, 4997ce77920a35060f1c8dd72e541e42ce296ccd168Fariborz Jahanian bool isCategoryImpl, 500f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar llvm::Value *Receiver, 50119cd87eb5fb3c197e631ce08fd52c446c4d4e8f1Daniel Dunbar bool IsClassMessage, 502d6c93d703541c992e06eb9a59a2d826a30da65b2Daniel Dunbar const CallArgList &CallArgs, 503d6c93d703541c992e06eb9a59a2d826a30da65b2Daniel Dunbar const ObjCMethodDecl *Method); 504bd7370a78604e9a20d698bfe328c1e43f12a0613John McCall virtual llvm::Value *GetClass(CodeGenFunction &CGF, 505ddb2a3d55a24a1dbdf9152621642d9a4b4fc2f61Daniel Dunbar const ObjCInterfaceDecl *OID); 506bd7370a78604e9a20d698bfe328c1e43f12a0613John McCall virtual llvm::Value *GetSelector(CodeGenFunction &CGF, Selector Sel, 50703b2960c14aede6ac82bdef32247094ebb72fa69Fariborz Jahanian bool lval = false); 508bd7370a78604e9a20d698bfe328c1e43f12a0613John McCall virtual llvm::Value *GetSelector(CodeGenFunction &CGF, const ObjCMethodDecl 5096d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbar *Method); 510cf5abc7ba032bd35158e4d75b0bc92a482fc67e8Fariborz Jahanian virtual llvm::Constant *GetEHType(QualType T); 5111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5121eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump virtual llvm::Function *GenerateMethod(const ObjCMethodDecl *OMD, 513679a502d462ef819e6175b58e255ca3f3391e7cfFariborz Jahanian const ObjCContainerDecl *CD); 5147ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar virtual void GenerateCategory(const ObjCCategoryImplDecl *CMD); 5157ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar virtual void GenerateClass(const ObjCImplementationDecl *ClassDecl); 51629254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall virtual void RegisterAlias(const ObjCCompatibleAliasDecl *OAD); 517bd7370a78604e9a20d698bfe328c1e43f12a0613John McCall virtual llvm::Value *GenerateProtocolRef(CodeGenFunction &CGF, 518af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar const ObjCProtocolDecl *PD); 519af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar virtual void GenerateProtocol(const ObjCProtocolDecl *PD); 52020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov virtual llvm::Function *ModuleInitFunction(); 521789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnall virtual llvm::Constant *GetPropertyGetFunction(); 522789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnall virtual llvm::Constant *GetPropertySetFunction(); 523ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek virtual llvm::Constant *GetOptimizedPropertySetFunction(bool atomic, 524ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek bool copy); 525789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnall virtual llvm::Constant *GetSetStructFunction(); 526789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnall virtual llvm::Constant *GetGetStructFunction(); 527d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall virtual llvm::Constant *GetCppAtomicObjectGetFunction(); 528d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall virtual llvm::Constant *GetCppAtomicObjectSetFunction(); 529309a4368cd299cff30ab22709e2b772cf8059e45Daniel Dunbar virtual llvm::Constant *EnumerationMutationFunction(); 5301eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5319f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual void EmitTryStmt(CodeGenFunction &CGF, 532f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall const ObjCAtTryStmt &S); 5339f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual void EmitSynchronizedStmt(CodeGenFunction &CGF, 534f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall const ObjCAtSynchronizedStmt &S); 5359f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual void EmitThrowStmt(CodeGenFunction &CGF, 5366a3c70ec59804347c99e96aa13934f63f4fed573Fariborz Jahanian const ObjCAtThrowStmt &S, 5376a3c70ec59804347c99e96aa13934f63f4fed573Fariborz Jahanian bool ClearInsertionPoint=true); 5389f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual llvm::Value * EmitObjCWeakRead(CodeGenFunction &CGF, 5396dc2317b59cb1180a59f6c283d96b7a5dfeb5307Fariborz Jahanian llvm::Value *AddrWeakObj); 5409f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual void EmitObjCWeakAssign(CodeGenFunction &CGF, 5413e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian llvm::Value *src, llvm::Value *dst); 5429f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual void EmitObjCGlobalAssign(CodeGenFunction &CGF, 543021a7a63984f0f912dc9e9dae2a1b3e1509a40ceFariborz Jahanian llvm::Value *src, llvm::Value *dest, 544021a7a63984f0f912dc9e9dae2a1b3e1509a40ceFariborz Jahanian bool threadlocal=false); 5459f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual void EmitObjCIvarAssign(CodeGenFunction &CGF, 5466c7a1f364796ce1acb988714e9e42076d1ce332eFariborz Jahanian llvm::Value *src, llvm::Value *dest, 5476c7a1f364796ce1acb988714e9e42076d1ce332eFariborz Jahanian llvm::Value *ivarOffset); 5489f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual void EmitObjCStrongCastAssign(CodeGenFunction &CGF, 54958626500527695865683d1d65053743de8770b60Fariborz Jahanian llvm::Value *src, llvm::Value *dest); 5509f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual void EmitGCMemmoveCollectable(CodeGenFunction &CGF, 5511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *DestPtr, 552082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian llvm::Value *SrcPtr, 55355bcace250e1ff366e4482714b344b8cbc8be5f3Fariborz Jahanian llvm::Value *Size); 5549f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual LValue EmitObjCValueForIvar(CodeGenFunction &CGF, 555598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian QualType ObjectTy, 556598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian llvm::Value *BaseValue, 557598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian const ObjCIvarDecl *Ivar, 558598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian unsigned CVRQualifiers); 5599f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual llvm::Value *EmitIvarOffset(CodeGenFunction &CGF, 5602a03192a02dbf4fdff438d1e658356bde871aba4Daniel Dunbar const ObjCInterfaceDecl *Interface, 561f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian const ObjCIvarDecl *Ivar); 562bd7370a78604e9a20d698bfe328c1e43f12a0613John McCall virtual llvm::Value *EmitNSAutoreleasePoolClassRef(CodeGenFunction &CGF); 5639f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual llvm::Constant *BuildGCBlockLayout(CodeGenModule &CGM, 5646b5a61b6dc400027fd793dcadceeb9da944a37eaJohn McCall const CGBlockInfo &blockInfo) { 56589ecd41e0a6bfb3b0913dbe41c3c666340b308c7Fariborz Jahanian return NULLPtr; 56689ecd41e0a6bfb3b0913dbe41c3c666340b308c7Fariborz Jahanian } 567c46b43517a18c8f41934a38a3580bd477ab54265Fariborz Jahanian virtual llvm::Constant *BuildRCBlockLayout(CodeGenModule &CGM, 568c46b43517a18c8f41934a38a3580bd477ab54265Fariborz Jahanian const CGBlockInfo &blockInfo) { 569c46b43517a18c8f41934a38a3580bd477ab54265Fariborz Jahanian return NULLPtr; 570c46b43517a18c8f41934a38a3580bd477ab54265Fariborz Jahanian } 5713ca23d7dc6cb61e6f363a58d9256d548199d120cFariborz Jahanian 5723ca23d7dc6cb61e6f363a58d9256d548199d120cFariborz Jahanian virtual llvm::Constant *BuildByrefLayout(CodeGenModule &CGM, 5733ca23d7dc6cb61e6f363a58d9256d548199d120cFariborz Jahanian QualType T) { 5743ca23d7dc6cb61e6f363a58d9256d548199d120cFariborz Jahanian return NULLPtr; 5753ca23d7dc6cb61e6f363a58d9256d548199d120cFariborz Jahanian } 5763ca23d7dc6cb61e6f363a58d9256d548199d120cFariborz Jahanian 5776f40e2244b0590f144c5ceee07981a962fbbc72eFariborz Jahanian virtual llvm::GlobalVariable *GetClassGlobal(const std::string &Name) { 5786f40e2244b0590f144c5ceee07981a962fbbc72eFariborz Jahanian return 0; 5796f40e2244b0590f144c5ceee07981a962fbbc72eFariborz Jahanian } 5800f984268b05edab2cc555a427c441baa9c252658Chris Lattner}; 58181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// Class representing the legacy GCC Objective-C ABI. This is the default when 58281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// -fobjc-nonfragile-abi is not specified. 58381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// 58481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// The GCC ABI target actually generates code that is approximately compatible 58581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// with the new GNUstep runtime ABI, but refrains from using any features that 58681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// would not work with the GCC runtime. For example, clang always generates 58781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// the extended form of the class structure, and the extra fields are simply 58881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// ignored by GCC libobjc. 5899f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallclass CGObjCGCC : public CGObjCGNU { 59081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// The GCC ABI message lookup function. Returns an IMP pointing to the 59181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// method implementation for this message. 592c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall LazyRuntimeFunction MsgLookupFn; 59381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// The GCC ABI superclass message lookup function. Takes a pointer to a 59481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// structure describing the receiver and the class, and a selector as 59581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// arguments. Returns the IMP for the corresponding method. 596c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall LazyRuntimeFunction MsgLookupSuperFn; 597c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnallprotected: 598c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall virtual llvm::Value *LookupIMP(CodeGenFunction &CGF, 599c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *&Receiver, 600c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *cmd, 60111311eaf6093a5374f94047df354d4c62d68c611Eli Friedman llvm::MDNode *node, 60211311eaf6093a5374f94047df354d4c62d68c611Eli Friedman MessageSendInfo &MSI) { 603c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall CGBuilderTy &Builder = CGF.Builder; 6046f3887ec3652482d2e0e8959d8a89b785330b0b2David Chisnall llvm::Value *args[] = { 605c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall EnforceType(Builder, Receiver, IdTy), 6066f3887ec3652482d2e0e8959d8a89b785330b0b2David Chisnall EnforceType(Builder, cmd, SelectorTy) }; 607bd7370a78604e9a20d698bfe328c1e43f12a0613John McCall llvm::CallSite imp = CGF.EmitRuntimeCallOrInvoke(MsgLookupFn, args); 6086f3887ec3652482d2e0e8959d8a89b785330b0b2David Chisnall imp->setMetadata(msgSendMDKind, node); 6096f3887ec3652482d2e0e8959d8a89b785330b0b2David Chisnall return imp.getInstruction(); 610c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } 611c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall virtual llvm::Value *LookupIMPSuper(CodeGenFunction &CGF, 612c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *ObjCSuper, 61311311eaf6093a5374f94047df354d4c62d68c611Eli Friedman llvm::Value *cmd, 61411311eaf6093a5374f94047df354d4c62d68c611Eli Friedman MessageSendInfo &MSI) { 615c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall CGBuilderTy &Builder = CGF.Builder; 616c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *lookupArgs[] = {EnforceType(Builder, ObjCSuper, 617c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall PtrToObjCSuperTy), cmd}; 618bd7370a78604e9a20d698bfe328c1e43f12a0613John McCall return CGF.EmitNounwindRuntimeCall(MsgLookupSuperFn, lookupArgs); 619c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } 6209f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall public: 621c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall CGObjCGCC(CodeGenModule &Mod) : CGObjCGNU(Mod, 8, 2) { 622c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // IMP objc_msg_lookup(id, SEL); 623c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall MsgLookupFn.init(&CGM, "objc_msg_lookup", IMPTy, IdTy, SelectorTy, NULL); 624c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // IMP objc_msg_lookup_super(struct objc_super*, SEL); 625c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall MsgLookupSuperFn.init(&CGM, "objc_msg_lookup_super", IMPTy, 626c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall PtrToObjCSuperTy, SelectorTy, NULL); 627c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } 6289f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall}; 62981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// Class used when targeting the new GNUstep runtime ABI. 6309f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallclass CGObjCGNUstep : public CGObjCGNU { 63181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// The slot lookup function. Returns a pointer to a cacheable structure 63281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// that contains (among other things) the IMP. 633c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall LazyRuntimeFunction SlotLookupFn; 63481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// The GNUstep ABI superclass message lookup function. Takes a pointer to 63581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// a structure describing the receiver and the class, and a selector as 63681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// arguments. Returns the slot for the corresponding method. Superclass 63781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// message lookup rarely changes, so this is a good caching opportunity. 638c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall LazyRuntimeFunction SlotLookupSuperFn; 639d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall /// Specialised function for setting atomic retain properties 640d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall LazyRuntimeFunction SetPropertyAtomic; 641d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall /// Specialised function for setting atomic copy properties 642d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall LazyRuntimeFunction SetPropertyAtomicCopy; 643d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall /// Specialised function for setting nonatomic retain properties 644d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall LazyRuntimeFunction SetPropertyNonAtomic; 645d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall /// Specialised function for setting nonatomic copy properties 646d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall LazyRuntimeFunction SetPropertyNonAtomicCopy; 647d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall /// Function to perform atomic copies of C++ objects with nontrivial copy 648d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall /// constructors from Objective-C ivars. 649d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall LazyRuntimeFunction CxxAtomicObjectGetFn; 650d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall /// Function to perform atomic copies of C++ objects with nontrivial copy 651d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall /// constructors to Objective-C ivars. 652d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall LazyRuntimeFunction CxxAtomicObjectSetFn; 65381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Type of an slot structure pointer. This is returned by the various 65481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// lookup functions. 655c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Type *SlotTy; 6562b07dd350a0d0b132ed529cb449fe2a5a56103b8John McCall public: 6572b07dd350a0d0b132ed529cb449fe2a5a56103b8John McCall virtual llvm::Constant *GetEHType(QualType T); 658c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall protected: 659c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall virtual llvm::Value *LookupIMP(CodeGenFunction &CGF, 660c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *&Receiver, 661c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *cmd, 66211311eaf6093a5374f94047df354d4c62d68c611Eli Friedman llvm::MDNode *node, 66311311eaf6093a5374f94047df354d4c62d68c611Eli Friedman MessageSendInfo &MSI) { 664c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall CGBuilderTy &Builder = CGF.Builder; 665c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Function *LookupFn = SlotLookupFn; 666c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 667c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // Store the receiver on the stack so that we can reload it later 668c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *ReceiverPtr = CGF.CreateTempAlloca(Receiver->getType()); 669c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall Builder.CreateStore(Receiver, ReceiverPtr); 670c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 671c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *self; 672c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 673c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall if (isa<ObjCMethodDecl>(CGF.CurCodeDecl)) { 674c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall self = CGF.LoadObjCSelf(); 675c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } else { 676c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall self = llvm::ConstantPointerNull::get(IdTy); 677c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } 678c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 679c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // The lookup function is guaranteed not to capture the receiver pointer. 680c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall LookupFn->setDoesNotCapture(1); 681c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 6826f3887ec3652482d2e0e8959d8a89b785330b0b2David Chisnall llvm::Value *args[] = { 683c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall EnforceType(Builder, ReceiverPtr, PtrToIdTy), 684c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall EnforceType(Builder, cmd, SelectorTy), 6856f3887ec3652482d2e0e8959d8a89b785330b0b2David Chisnall EnforceType(Builder, self, IdTy) }; 686bd7370a78604e9a20d698bfe328c1e43f12a0613John McCall llvm::CallSite slot = CGF.EmitRuntimeCallOrInvoke(LookupFn, args); 6876f3887ec3652482d2e0e8959d8a89b785330b0b2David Chisnall slot.setOnlyReadsMemory(); 688c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall slot->setMetadata(msgSendMDKind, node); 689c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 690c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // Load the imp from the slot 6916f3887ec3652482d2e0e8959d8a89b785330b0b2David Chisnall llvm::Value *imp = 6926f3887ec3652482d2e0e8959d8a89b785330b0b2David Chisnall Builder.CreateLoad(Builder.CreateStructGEP(slot.getInstruction(), 4)); 693c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 694c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // The lookup function may have changed the receiver, so make sure we use 695c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // the new one. 696c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall Receiver = Builder.CreateLoad(ReceiverPtr, true); 697c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall return imp; 698c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } 699c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall virtual llvm::Value *LookupIMPSuper(CodeGenFunction &CGF, 700c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *ObjCSuper, 70111311eaf6093a5374f94047df354d4c62d68c611Eli Friedman llvm::Value *cmd, 70211311eaf6093a5374f94047df354d4c62d68c611Eli Friedman MessageSendInfo &MSI) { 703c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall CGBuilderTy &Builder = CGF.Builder; 704c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *lookupArgs[] = {ObjCSuper, cmd}; 705c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 706bd7370a78604e9a20d698bfe328c1e43f12a0613John McCall llvm::CallInst *slot = 707bd7370a78604e9a20d698bfe328c1e43f12a0613John McCall CGF.EmitNounwindRuntimeCall(SlotLookupSuperFn, lookupArgs); 708c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall slot->setOnlyReadsMemory(); 709c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 710c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall return Builder.CreateLoad(Builder.CreateStructGEP(slot, 4)); 711c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } 7129f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall public: 713c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall CGObjCGNUstep(CodeGenModule &Mod) : CGObjCGNU(Mod, 9, 3) { 714de38cb1fc8429e7adbd59308d19628cfda5aeee6David Chisnall const ObjCRuntime &R = CGM.getLangOpts().ObjCRuntime; 71565bd4ac6ffbf6de30cd6f36735539ff8172a904aDavid Chisnall 7167650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *SlotStructTy = llvm::StructType::get(PtrTy, 717c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall PtrTy, PtrTy, IntTy, IMPTy, NULL); 718c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall SlotTy = llvm::PointerType::getUnqual(SlotStructTy); 719c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // Slot_t objc_msg_lookup_sender(id *receiver, SEL selector, id sender); 720c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall SlotLookupFn.init(&CGM, "objc_msg_lookup_sender", SlotTy, PtrToIdTy, 721c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall SelectorTy, IdTy, NULL); 722c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // Slot_t objc_msg_lookup_super(struct objc_super*, SEL); 723c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall SlotLookupSuperFn.init(&CGM, "objc_slot_lookup_super", SlotTy, 724c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall PtrToObjCSuperTy, SelectorTy, NULL); 7259735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // If we're in ObjC++ mode, then we want to make 7264e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (CGM.getLangOpts().CPlusPlus) { 7279cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::Type *VoidTy = llvm::Type::getVoidTy(VMContext); 7289735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // void *__cxa_begin_catch(void *e) 7299735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall EnterCatchFn.init(&CGM, "__cxa_begin_catch", PtrTy, PtrTy, NULL); 7309735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // void __cxa_end_catch(void) 7314bd5d09e3a233ed23ec6f913166e4b75d8de215cDavid Chisnall ExitCatchFn.init(&CGM, "__cxa_end_catch", VoidTy, NULL); 7329735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // void _Unwind_Resume_or_Rethrow(void*) 733d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall ExceptionReThrowFn.init(&CGM, "_Unwind_Resume_or_Rethrow", VoidTy, 734d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall PtrTy, NULL); 73565bd4ac6ffbf6de30cd6f36735539ff8172a904aDavid Chisnall } else if (R.getVersion() >= VersionTuple(1, 7)) { 73665bd4ac6ffbf6de30cd6f36735539ff8172a904aDavid Chisnall llvm::Type *VoidTy = llvm::Type::getVoidTy(VMContext); 73765bd4ac6ffbf6de30cd6f36735539ff8172a904aDavid Chisnall // id objc_begin_catch(void *e) 73865bd4ac6ffbf6de30cd6f36735539ff8172a904aDavid Chisnall EnterCatchFn.init(&CGM, "objc_begin_catch", IdTy, PtrTy, NULL); 73965bd4ac6ffbf6de30cd6f36735539ff8172a904aDavid Chisnall // void objc_end_catch(void) 74065bd4ac6ffbf6de30cd6f36735539ff8172a904aDavid Chisnall ExitCatchFn.init(&CGM, "objc_end_catch", VoidTy, NULL); 74165bd4ac6ffbf6de30cd6f36735539ff8172a904aDavid Chisnall // void _Unwind_Resume_or_Rethrow(void*) 74265bd4ac6ffbf6de30cd6f36735539ff8172a904aDavid Chisnall ExceptionReThrowFn.init(&CGM, "objc_exception_rethrow", VoidTy, 74365bd4ac6ffbf6de30cd6f36735539ff8172a904aDavid Chisnall PtrTy, NULL); 7449735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall } 745d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall llvm::Type *VoidTy = llvm::Type::getVoidTy(VMContext); 746d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall SetPropertyAtomic.init(&CGM, "objc_setProperty_atomic", VoidTy, IdTy, 747d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall SelectorTy, IdTy, PtrDiffTy, NULL); 748d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall SetPropertyAtomicCopy.init(&CGM, "objc_setProperty_atomic_copy", VoidTy, 749d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall IdTy, SelectorTy, IdTy, PtrDiffTy, NULL); 750d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall SetPropertyNonAtomic.init(&CGM, "objc_setProperty_nonatomic", VoidTy, 751d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall IdTy, SelectorTy, IdTy, PtrDiffTy, NULL); 752d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall SetPropertyNonAtomicCopy.init(&CGM, "objc_setProperty_nonatomic_copy", 753d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall VoidTy, IdTy, SelectorTy, IdTy, PtrDiffTy, NULL); 754d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall // void objc_setCppObjectAtomic(void *dest, const void *src, void 755d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall // *helper); 756d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall CxxAtomicObjectSetFn.init(&CGM, "objc_setCppObjectAtomic", VoidTy, PtrTy, 757d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall PtrTy, PtrTy, NULL); 758d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall // void objc_getCppObjectAtomic(void *dest, const void *src, void 759d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall // *helper); 760d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall CxxAtomicObjectGetFn.init(&CGM, "objc_getCppObjectAtomic", VoidTy, PtrTy, 761d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall PtrTy, PtrTy, NULL); 762d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall } 763d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall virtual llvm::Constant *GetCppAtomicObjectGetFunction() { 764d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall // The optimised functions were added in version 1.7 of the GNUstep 765d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall // runtime. 766d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall assert (CGM.getLangOpts().ObjCRuntime.getVersion() >= 767d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall VersionTuple(1, 7)); 768d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall return CxxAtomicObjectGetFn; 769d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall } 770d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall virtual llvm::Constant *GetCppAtomicObjectSetFunction() { 771d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall // The optimised functions were added in version 1.7 of the GNUstep 772d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall // runtime. 773d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall assert (CGM.getLangOpts().ObjCRuntime.getVersion() >= 774d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall VersionTuple(1, 7)); 775d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall return CxxAtomicObjectSetFn; 776d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall } 777d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall virtual llvm::Constant *GetOptimizedPropertySetFunction(bool atomic, 778d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall bool copy) { 779d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall // The optimised property functions omit the GC check, and so are not 780d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall // safe to use in GC mode. The standard functions are fast in GC mode, 781d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall // so there is less advantage in using them. 782d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall assert ((CGM.getLangOpts().getGC() == LangOptions::NonGC)); 783d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall // The optimised functions were added in version 1.7 of the GNUstep 784d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall // runtime. 785d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall assert (CGM.getLangOpts().ObjCRuntime.getVersion() >= 786d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall VersionTuple(1, 7)); 787d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall 788d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall if (atomic) { 789d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall if (copy) return SetPropertyAtomicCopy; 790d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall return SetPropertyAtomic; 791d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall } 792d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall if (copy) return SetPropertyNonAtomicCopy; 793d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall return SetPropertyNonAtomic; 794d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall 795d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall return 0; 796c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } 7979f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall}; 7989f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 7990a7dd788dbef975f35f273c7ab913f480f7edd60John McCall/// Support for the ObjFW runtime. Support here is due to 8000a7dd788dbef975f35f273c7ab913f480f7edd60John McCall/// Jonathan Schleifer <js@webkeks.org>, the ObjFW maintainer. 8010a7dd788dbef975f35f273c7ab913f480f7edd60John McCallclass CGObjCObjFW: public CGObjCGNU { 8020a7dd788dbef975f35f273c7ab913f480f7edd60John McCallprotected: 8030a7dd788dbef975f35f273c7ab913f480f7edd60John McCall /// The GCC ABI message lookup function. Returns an IMP pointing to the 8040a7dd788dbef975f35f273c7ab913f480f7edd60John McCall /// method implementation for this message. 8050a7dd788dbef975f35f273c7ab913f480f7edd60John McCall LazyRuntimeFunction MsgLookupFn; 80611311eaf6093a5374f94047df354d4c62d68c611Eli Friedman /// stret lookup function. While this does not seem to make sense at the 80711311eaf6093a5374f94047df354d4c62d68c611Eli Friedman /// first look, this is required to call the correct forwarding function. 80811311eaf6093a5374f94047df354d4c62d68c611Eli Friedman LazyRuntimeFunction MsgLookupFnSRet; 8090a7dd788dbef975f35f273c7ab913f480f7edd60John McCall /// The GCC ABI superclass message lookup function. Takes a pointer to a 8100a7dd788dbef975f35f273c7ab913f480f7edd60John McCall /// structure describing the receiver and the class, and a selector as 8110a7dd788dbef975f35f273c7ab913f480f7edd60John McCall /// arguments. Returns the IMP for the corresponding method. 81211311eaf6093a5374f94047df354d4c62d68c611Eli Friedman LazyRuntimeFunction MsgLookupSuperFn, MsgLookupSuperFnSRet; 8130a7dd788dbef975f35f273c7ab913f480f7edd60John McCall 8140a7dd788dbef975f35f273c7ab913f480f7edd60John McCall virtual llvm::Value *LookupIMP(CodeGenFunction &CGF, 8150a7dd788dbef975f35f273c7ab913f480f7edd60John McCall llvm::Value *&Receiver, 8160a7dd788dbef975f35f273c7ab913f480f7edd60John McCall llvm::Value *cmd, 81711311eaf6093a5374f94047df354d4c62d68c611Eli Friedman llvm::MDNode *node, 81811311eaf6093a5374f94047df354d4c62d68c611Eli Friedman MessageSendInfo &MSI) { 8190a7dd788dbef975f35f273c7ab913f480f7edd60John McCall CGBuilderTy &Builder = CGF.Builder; 8200a7dd788dbef975f35f273c7ab913f480f7edd60John McCall llvm::Value *args[] = { 8210a7dd788dbef975f35f273c7ab913f480f7edd60John McCall EnforceType(Builder, Receiver, IdTy), 8220a7dd788dbef975f35f273c7ab913f480f7edd60John McCall EnforceType(Builder, cmd, SelectorTy) }; 82311311eaf6093a5374f94047df354d4c62d68c611Eli Friedman 82411311eaf6093a5374f94047df354d4c62d68c611Eli Friedman llvm::CallSite imp; 82511311eaf6093a5374f94047df354d4c62d68c611Eli Friedman if (CGM.ReturnTypeUsesSRet(MSI.CallInfo)) 82611311eaf6093a5374f94047df354d4c62d68c611Eli Friedman imp = CGF.EmitRuntimeCallOrInvoke(MsgLookupFnSRet, args); 82711311eaf6093a5374f94047df354d4c62d68c611Eli Friedman else 82811311eaf6093a5374f94047df354d4c62d68c611Eli Friedman imp = CGF.EmitRuntimeCallOrInvoke(MsgLookupFn, args); 82911311eaf6093a5374f94047df354d4c62d68c611Eli Friedman 8300a7dd788dbef975f35f273c7ab913f480f7edd60John McCall imp->setMetadata(msgSendMDKind, node); 8310a7dd788dbef975f35f273c7ab913f480f7edd60John McCall return imp.getInstruction(); 8320a7dd788dbef975f35f273c7ab913f480f7edd60John McCall } 8330a7dd788dbef975f35f273c7ab913f480f7edd60John McCall 8340a7dd788dbef975f35f273c7ab913f480f7edd60John McCall virtual llvm::Value *LookupIMPSuper(CodeGenFunction &CGF, 8350a7dd788dbef975f35f273c7ab913f480f7edd60John McCall llvm::Value *ObjCSuper, 83611311eaf6093a5374f94047df354d4c62d68c611Eli Friedman llvm::Value *cmd, 83711311eaf6093a5374f94047df354d4c62d68c611Eli Friedman MessageSendInfo &MSI) { 8380a7dd788dbef975f35f273c7ab913f480f7edd60John McCall CGBuilderTy &Builder = CGF.Builder; 8390a7dd788dbef975f35f273c7ab913f480f7edd60John McCall llvm::Value *lookupArgs[] = {EnforceType(Builder, ObjCSuper, 8400a7dd788dbef975f35f273c7ab913f480f7edd60John McCall PtrToObjCSuperTy), cmd}; 84111311eaf6093a5374f94047df354d4c62d68c611Eli Friedman 84211311eaf6093a5374f94047df354d4c62d68c611Eli Friedman if (CGM.ReturnTypeUsesSRet(MSI.CallInfo)) 84311311eaf6093a5374f94047df354d4c62d68c611Eli Friedman return CGF.EmitNounwindRuntimeCall(MsgLookupSuperFnSRet, lookupArgs); 84411311eaf6093a5374f94047df354d4c62d68c611Eli Friedman else 84511311eaf6093a5374f94047df354d4c62d68c611Eli Friedman return CGF.EmitNounwindRuntimeCall(MsgLookupSuperFn, lookupArgs); 8460a7dd788dbef975f35f273c7ab913f480f7edd60John McCall } 8470a7dd788dbef975f35f273c7ab913f480f7edd60John McCall 848bd7370a78604e9a20d698bfe328c1e43f12a0613John McCall virtual llvm::Value *GetClassNamed(CodeGenFunction &CGF, 849f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall const std::string &Name, bool isWeak) { 850f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall if (isWeak) 851bd7370a78604e9a20d698bfe328c1e43f12a0613John McCall return CGObjCGNU::GetClassNamed(CGF, Name, isWeak); 852f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall 853f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall EmitClassRef(Name); 854f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall 855f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall std::string SymbolName = "_OBJC_CLASS_" + Name; 856f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall 857f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall llvm::GlobalVariable *ClassSymbol = TheModule.getGlobalVariable(SymbolName); 858f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall 859f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall if (!ClassSymbol) 860f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall ClassSymbol = new llvm::GlobalVariable(TheModule, LongTy, false, 861f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall llvm::GlobalValue::ExternalLinkage, 862f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall 0, SymbolName); 863f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall 864f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall return ClassSymbol; 865f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall } 866f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall 867f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCallpublic: 8680a7dd788dbef975f35f273c7ab913f480f7edd60John McCall CGObjCObjFW(CodeGenModule &Mod): CGObjCGNU(Mod, 9, 3) { 8690a7dd788dbef975f35f273c7ab913f480f7edd60John McCall // IMP objc_msg_lookup(id, SEL); 8700a7dd788dbef975f35f273c7ab913f480f7edd60John McCall MsgLookupFn.init(&CGM, "objc_msg_lookup", IMPTy, IdTy, SelectorTy, NULL); 87111311eaf6093a5374f94047df354d4c62d68c611Eli Friedman MsgLookupFnSRet.init(&CGM, "objc_msg_lookup_stret", IMPTy, IdTy, 87211311eaf6093a5374f94047df354d4c62d68c611Eli Friedman SelectorTy, NULL); 8730a7dd788dbef975f35f273c7ab913f480f7edd60John McCall // IMP objc_msg_lookup_super(struct objc_super*, SEL); 8740a7dd788dbef975f35f273c7ab913f480f7edd60John McCall MsgLookupSuperFn.init(&CGM, "objc_msg_lookup_super", IMPTy, 8750a7dd788dbef975f35f273c7ab913f480f7edd60John McCall PtrToObjCSuperTy, SelectorTy, NULL); 87611311eaf6093a5374f94047df354d4c62d68c611Eli Friedman MsgLookupSuperFnSRet.init(&CGM, "objc_msg_lookup_super_stret", IMPTy, 87711311eaf6093a5374f94047df354d4c62d68c611Eli Friedman PtrToObjCSuperTy, SelectorTy, NULL); 8780a7dd788dbef975f35f273c7ab913f480f7edd60John McCall } 879f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall}; 8800f984268b05edab2cc555a427c441baa9c252658Chris Lattner} // end anonymous namespace 8810f984268b05edab2cc555a427c441baa9c252658Chris Lattner 88220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 8832a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner/// Emits a reference to a dummy variable which is emitted with each class. 8842a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner/// This ensures that a linker error will be generated when trying to link 8852a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner/// together modules where a referenced class is not defined. 886bb1c8600218b3244340331165fc7cba7bf227655Mike Stumpvoid CGObjCGNU::EmitClassRef(const std::string &className) { 8872a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner std::string symbolRef = "__objc_class_ref_" + className; 8882a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner // Don't emit two copies of the same symbol 889bb1c8600218b3244340331165fc7cba7bf227655Mike Stump if (TheModule.getGlobalVariable(symbolRef)) 890bb1c8600218b3244340331165fc7cba7bf227655Mike Stump return; 8912a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner std::string symbolName = "__objc_class_name_" + className; 8922a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner llvm::GlobalVariable *ClassSymbol = TheModule.getGlobalVariable(symbolName); 8932a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner if (!ClassSymbol) { 8941c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson ClassSymbol = new llvm::GlobalVariable(TheModule, LongTy, false, 8951c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson llvm::GlobalValue::ExternalLinkage, 0, symbolName); 8962a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner } 8971c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson new llvm::GlobalVariable(TheModule, ClassSymbol->getType(), true, 898f35271b8677a5f31498b89587b1da42a06dd46fdChris Lattner llvm::GlobalValue::WeakAnyLinkage, ClassSymbol, symbolRef); 8992a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner} 90020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 9015f9e272e632e951b1efe824cd16acb4d96077930Chris Lattnerstatic std::string SymbolNameForMethod(const StringRef &ClassName, 9025f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner const StringRef &CategoryName, const Selector MethodName, 9039f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall bool isClassMethod) { 9049f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall std::string MethodNameColonStripped = MethodName.getAsString(); 905d346736dfe5ef584a2d0c9d27d217408ee394b9bDavid Chisnall std::replace(MethodNameColonStripped.begin(), MethodNameColonStripped.end(), 906d346736dfe5ef584a2d0c9d27d217408ee394b9bDavid Chisnall ':', '_'); 9075f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner return (Twine(isClassMethod ? "_c_" : "_i_") + ClassName + "_" + 9089f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall CategoryName + "_" + MethodNameColonStripped).str(); 90987935a8d5c0eeda8ad62815f4fc815ad25c7cd8eDavid Chisnall} 91020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 9119f6614e3c5d34998dd5a5cc6faf0746dcd611d49David ChisnallCGObjCGNU::CGObjCGNU(CodeGenModule &cgm, unsigned runtimeABIVersion, 9129f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall unsigned protocolClassVersion) 913de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall : CGObjCRuntime(cgm), TheModule(CGM.getModule()), 914de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall VMContext(cgm.getLLVMContext()), ClassPtrAlias(0), MetaClassPtrAlias(0), 915de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall RuntimeVersion(runtimeABIVersion), ProtocolVersion(protocolClassVersion) { 916c6cd5fd3eae71f8841504a396563343cfaaf503eDavid Chisnall 917c6cd5fd3eae71f8841504a396563343cfaaf503eDavid Chisnall msgSendMDKind = VMContext.getMDKindID("GNUObjCMessageSend"); 918c6cd5fd3eae71f8841504a396563343cfaaf503eDavid Chisnall 9199f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall CodeGenTypes &Types = CGM.getTypes(); 920e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner IntTy = cast<llvm::IntegerType>( 9219f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Types.ConvertType(CGM.getContext().IntTy)); 922e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner LongTy = cast<llvm::IntegerType>( 9239f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Types.ConvertType(CGM.getContext().LongTy)); 9248fac25d33b13e25f512dd921d4d5a4b565f5d175David Chisnall SizeTy = cast<llvm::IntegerType>( 9259f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Types.ConvertType(CGM.getContext().getSizeType())); 9268fac25d33b13e25f512dd921d4d5a4b565f5d175David Chisnall PtrDiffTy = cast<llvm::IntegerType>( 9279f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Types.ConvertType(CGM.getContext().getPointerDiffType())); 9288fac25d33b13e25f512dd921d4d5a4b565f5d175David Chisnall BoolTy = CGM.getTypes().ConvertType(CGM.getContext().BoolTy); 9291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 930d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Int8Ty = llvm::Type::getInt8Ty(VMContext); 931d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // C string type. Used in lots of places. 932d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrToInt8Ty = llvm::PointerType::getUnqual(Int8Ty); 933d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 9344a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Zeros[0] = llvm::ConstantInt::get(LongTy, 0); 93520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Zeros[1] = Zeros[0]; 936d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian NULLPtr = llvm::ConstantPointerNull::get(PtrToInt8Ty); 937391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner // Get the selector Type. 9380d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall QualType selTy = CGM.getContext().getObjCSelType(); 9390d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall if (QualType() == selTy) { 9400d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall SelectorTy = PtrToInt8Ty; 9410d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall } else { 9420d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall SelectorTy = cast<llvm::PointerType>(CGM.getTypes().ConvertType(selTy)); 9430d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall } 944e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner 94596e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson PtrToIntTy = llvm::PointerType::getUnqual(IntTy); 946391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner PtrTy = PtrToInt8Ty; 9471eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 948917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall Int32Ty = llvm::Type::getInt32Ty(VMContext); 949917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall Int64Ty = llvm::Type::getInt64Ty(VMContext); 950917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall 95149de5289acea91c9d224c9aadd4d527e8f9fdaffDavid Chisnall IntPtrTy = 95249de5289acea91c9d224c9aadd4d527e8f9fdaffDavid Chisnall TheModule.getPointerSize() == llvm::Module::Pointer32 ? Int32Ty : Int64Ty; 95349de5289acea91c9d224c9aadd4d527e8f9fdaffDavid Chisnall 954391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner // Object type 9557bcf6c3e098e808282cc96309c02c08ab6229940David Chisnall QualType UnqualIdTy = CGM.getContext().getObjCIdType(); 9567bcf6c3e098e808282cc96309c02c08ab6229940David Chisnall ASTIdTy = CanQualType(); 9577bcf6c3e098e808282cc96309c02c08ab6229940David Chisnall if (UnqualIdTy != QualType()) { 9587bcf6c3e098e808282cc96309c02c08ab6229940David Chisnall ASTIdTy = CGM.getContext().getCanonicalType(UnqualIdTy); 9590d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall IdTy = cast<llvm::PointerType>(CGM.getTypes().ConvertType(ASTIdTy)); 9607bcf6c3e098e808282cc96309c02c08ab6229940David Chisnall } else { 9617bcf6c3e098e808282cc96309c02c08ab6229940David Chisnall IdTy = PtrToInt8Ty; 9620d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall } 963ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall PtrToIdTy = llvm::PointerType::getUnqual(IdTy); 9641eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9657650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner ObjCSuperTy = llvm::StructType::get(IdTy, IdTy, NULL); 966c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall PtrToObjCSuperTy = llvm::PointerType::getUnqual(ObjCSuperTy); 967c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 9689cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::Type *VoidTy = llvm::Type::getVoidTy(VMContext); 9699f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 9709f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // void objc_exception_throw(id); 9719f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall ExceptionThrowFn.init(&CGM, "objc_exception_throw", VoidTy, IdTy, NULL); 9729735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall ExceptionReThrowFn.init(&CGM, "objc_exception_throw", VoidTy, IdTy, NULL); 9739f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // int objc_sync_enter(id); 9749f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SyncEnterFn.init(&CGM, "objc_sync_enter", IntTy, IdTy, NULL); 9759f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // int objc_sync_exit(id); 9769f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SyncExitFn.init(&CGM, "objc_sync_exit", IntTy, IdTy, NULL); 9779f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 9789f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // void objc_enumerationMutation (id) 9799f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall EnumerationMutationFn.init(&CGM, "objc_enumerationMutation", VoidTy, 9809f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall IdTy, NULL); 9819f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 9829f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // id objc_getProperty(id, SEL, ptrdiff_t, BOOL) 9839f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall GetPropertyFn.init(&CGM, "objc_getProperty", IdTy, IdTy, SelectorTy, 9849f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall PtrDiffTy, BoolTy, NULL); 9859f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // void objc_setProperty(id, SEL, ptrdiff_t, id, BOOL, BOOL) 9869f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SetPropertyFn.init(&CGM, "objc_setProperty", VoidTy, IdTy, SelectorTy, 9879f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall PtrDiffTy, IdTy, BoolTy, BoolTy, NULL); 9889f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // void objc_setPropertyStruct(void*, void*, ptrdiff_t, BOOL, BOOL) 9899f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall GetStructPropertyFn.init(&CGM, "objc_getPropertyStruct", VoidTy, PtrTy, PtrTy, 9909f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall PtrDiffTy, BoolTy, BoolTy, NULL); 9919f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // void objc_setPropertyStruct(void*, void*, ptrdiff_t, BOOL, BOOL) 9929f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SetStructPropertyFn.init(&CGM, "objc_setPropertyStruct", VoidTy, PtrTy, PtrTy, 9939f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall PtrDiffTy, BoolTy, BoolTy, NULL); 9949f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 995391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner // IMP type 9969cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::Type *IMPArgs[] = { IdTy, SelectorTy }; 997c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall IMPTy = llvm::PointerType::getUnqual(llvm::FunctionType::get(IdTy, IMPArgs, 998c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall true)); 999ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall 10004e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie const LangOptions &Opts = CGM.getLangOpts(); 1001e289d81369914678db386f6aa86faf8f178e245dDouglas Gregor if ((Opts.getGC() != LangOptions::NonGC) || Opts.ObjCAutoRefCount) 1002f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall RuntimeVersion = 10; 1003f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall 10049735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // Don't bother initialising the GC stuff unless we're compiling in GC mode 1005e289d81369914678db386f6aa86faf8f178e245dDouglas Gregor if (Opts.getGC() != LangOptions::NonGC) { 1006a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall // This is a bit of an hack. We should sort this out by having a proper 1007a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall // CGObjCGNUstep subclass for GC, but we may want to really support the old 1008a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall // ABI and GC added in ObjectiveC2.framework, so we fudge it a bit for now 1009ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // Get selectors needed in GC mode 1010ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall RetainSel = GetNullarySelector("retain", CGM.getContext()); 1011ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall ReleaseSel = GetNullarySelector("release", CGM.getContext()); 1012ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall AutoreleaseSel = GetNullarySelector("autorelease", CGM.getContext()); 1013ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall 1014ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // Get functions needed in GC mode 1015ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall 1016ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // id objc_assign_ivar(id, id, ptrdiff_t); 10179f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall IvarAssignFn.init(&CGM, "objc_assign_ivar", IdTy, IdTy, IdTy, PtrDiffTy, 10189f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall NULL); 1019ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // id objc_assign_strongCast (id, id*) 10209f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall StrongCastAssignFn.init(&CGM, "objc_assign_strongCast", IdTy, IdTy, 10219f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall PtrToIdTy, NULL); 1022ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // id objc_assign_global(id, id*); 10239f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall GlobalAssignFn.init(&CGM, "objc_assign_global", IdTy, IdTy, PtrToIdTy, 10249f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall NULL); 1025ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // id objc_assign_weak(id, id*); 10269f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall WeakAssignFn.init(&CGM, "objc_assign_weak", IdTy, IdTy, PtrToIdTy, NULL); 1027ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // id objc_read_weak(id*); 10289f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall WeakReadFn.init(&CGM, "objc_read_weak", IdTy, PtrToIdTy, NULL); 1029ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // void *objc_memmove_collectable(void*, void *, size_t); 10309f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall MemMoveFn.init(&CGM, "objc_memmove_collectable", PtrTy, PtrTy, PtrTy, 10319f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SizeTy, NULL); 1032ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 103320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 1034bb1c8600218b3244340331165fc7cba7bf227655Mike Stump 1035bd7370a78604e9a20d698bfe328c1e43f12a0613John McCallllvm::Value *CGObjCGNU::GetClassNamed(CodeGenFunction &CGF, 1036d3fc7296ae95353173bae25ee4dd3ecf4d6dced1David Chisnall const std::string &Name, 1037d3fc7296ae95353173bae25ee4dd3ecf4d6dced1David Chisnall bool isWeak) { 1038c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall llvm::Value *ClassName = CGM.GetAddrOfConstantCString(Name); 103941d63ed274d1bf7ba7459f218c8f6a385fc5c6d6David Chisnall // With the incompatible ABI, this will need to be replaced with a direct 104041d63ed274d1bf7ba7459f218c8f6a385fc5c6d6David Chisnall // reference to the class symbol. For the compatible nonfragile ABI we are 104141d63ed274d1bf7ba7459f218c8f6a385fc5c6d6David Chisnall // still performing this lookup at run time but emitting the symbol for the 104241d63ed274d1bf7ba7459f218c8f6a385fc5c6d6David Chisnall // class externally so that we can make the switch later. 1043c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall // 1044c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall // Libobjc2 contains an LLVM pass that replaces calls to objc_lookup_class 1045c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall // with memoized versions or with static references if it's safe to do so. 1046d3fc7296ae95353173bae25ee4dd3ecf4d6dced1David Chisnall if (!isWeak) 1047d3fc7296ae95353173bae25ee4dd3ecf4d6dced1David Chisnall EmitClassRef(Name); 1048bd7370a78604e9a20d698bfe328c1e43f12a0613John McCall ClassName = CGF.Builder.CreateStructGEP(ClassName, 0); 1049ddb2a3d55a24a1dbdf9152621642d9a4b4fc2f61Daniel Dunbar 105020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ClassLookupFn = 1051da549e8995c447542d5631b8b67fcc3a9582797aJay Foad CGM.CreateRuntimeFunction(llvm::FunctionType::get(IdTy, PtrToInt8Ty, true), 105226c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian "objc_lookup_class"); 1053bd7370a78604e9a20d698bfe328c1e43f12a0613John McCall return CGF.EmitNounwindRuntimeCall(ClassLookupFn, ClassName); 1054391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner} 1055391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner 1056c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall// This has to perform the lookup every time, since posing and related 1057c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall// techniques can modify the name -> class mapping. 1058bd7370a78604e9a20d698bfe328c1e43f12a0613John McCallllvm::Value *CGObjCGNU::GetClass(CodeGenFunction &CGF, 1059c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall const ObjCInterfaceDecl *OID) { 1060bd7370a78604e9a20d698bfe328c1e43f12a0613John McCall return GetClassNamed(CGF, OID->getNameAsString(), OID->isWeakImported()); 1061c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall} 1062bd7370a78604e9a20d698bfe328c1e43f12a0613John McCallllvm::Value *CGObjCGNU::EmitNSAutoreleasePoolClassRef(CodeGenFunction &CGF) { 1063bd7370a78604e9a20d698bfe328c1e43f12a0613John McCall return GetClassNamed(CGF, "NSAutoreleasePool", false); 1064c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall} 1065c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall 1066bd7370a78604e9a20d698bfe328c1e43f12a0613John McCallllvm::Value *CGObjCGNU::GetSelector(CodeGenFunction &CGF, Selector Sel, 10679f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall const std::string &TypeEncoding, bool lval) { 10689f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 1069ad5b69da4774a4eec09af96af23a2fe793fd00f8Craig Topper SmallVectorImpl<TypedSelector> &Types = SelectorTable[Sel]; 10709f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::GlobalAlias *SelValue = 0; 10719f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 10729f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 10735f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner for (SmallVectorImpl<TypedSelector>::iterator i = Types.begin(), 10749f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall e = Types.end() ; i!=e ; i++) { 10759f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall if (i->first == TypeEncoding) { 10769f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SelValue = i->second; 10779f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall break; 10789f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall } 10799f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall } 10809f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall if (0 == SelValue) { 1081c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall SelValue = new llvm::GlobalAlias(SelectorTy, 10829f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::GlobalValue::PrivateLinkage, 10839f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall ".objc_selector_"+Sel.getAsString(), NULL, 10849f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall &TheModule); 10859f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Types.push_back(TypedSelector(TypeEncoding, SelValue)); 10869f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall } 10879f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 1088c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall if (lval) { 1089bd7370a78604e9a20d698bfe328c1e43f12a0613John McCall llvm::Value *tmp = CGF.CreateTempAlloca(SelValue->getType()); 1090bd7370a78604e9a20d698bfe328c1e43f12a0613John McCall CGF.Builder.CreateStore(SelValue, tmp); 1091c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall return tmp; 1092c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } 1093c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall return SelValue; 10949f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall} 10959f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 1096bd7370a78604e9a20d698bfe328c1e43f12a0613John McCallllvm::Value *CGObjCGNU::GetSelector(CodeGenFunction &CGF, Selector Sel, 10979f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall bool lval) { 1098bd7370a78604e9a20d698bfe328c1e43f12a0613John McCall return GetSelector(CGF, Sel, std::string(), lval); 1099df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian} 1100df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian 1101bd7370a78604e9a20d698bfe328c1e43f12a0613John McCallllvm::Value *CGObjCGNU::GetSelector(CodeGenFunction &CGF, 1102bd7370a78604e9a20d698bfe328c1e43f12a0613John McCall const ObjCMethodDecl *Method) { 1103df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian std::string SelTypes; 1104df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian CGM.getContext().getObjCEncodingForMethodDecl(Method, SelTypes); 1105bd7370a78604e9a20d698bfe328c1e43f12a0613John McCall return GetSelector(CGF, Method->getSelector(), SelTypes, false); 11068e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner} 11078e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner 1108cf5abc7ba032bd35158e4d75b0bc92a482fc67e8Fariborz Jahanianllvm::Constant *CGObjCGNU::GetEHType(QualType T) { 11092b07dd350a0d0b132ed529cb449fe2a5a56103b8John McCall if (T->isObjCIdType() || T->isObjCQualifiedIdType()) { 11102b07dd350a0d0b132ed529cb449fe2a5a56103b8John McCall // With the old ABI, there was only one kind of catchall, which broke 11112b07dd350a0d0b132ed529cb449fe2a5a56103b8John McCall // foreign exceptions. With the new ABI, we use __objc_id_typeinfo as 11122b07dd350a0d0b132ed529cb449fe2a5a56103b8John McCall // a pointer indicating object catchalls, and NULL to indicate real 11132b07dd350a0d0b132ed529cb449fe2a5a56103b8John McCall // catchalls 11142b07dd350a0d0b132ed529cb449fe2a5a56103b8John McCall if (CGM.getLangOpts().ObjCRuntime.isNonFragile()) { 11152b07dd350a0d0b132ed529cb449fe2a5a56103b8John McCall return MakeConstantString("@id"); 11162b07dd350a0d0b132ed529cb449fe2a5a56103b8John McCall } else { 11172b07dd350a0d0b132ed529cb449fe2a5a56103b8John McCall return 0; 11182b07dd350a0d0b132ed529cb449fe2a5a56103b8John McCall } 11199735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall } 11202b07dd350a0d0b132ed529cb449fe2a5a56103b8John McCall 11212b07dd350a0d0b132ed529cb449fe2a5a56103b8John McCall // All other types should be Objective-C interface pointer types. 11222b07dd350a0d0b132ed529cb449fe2a5a56103b8John McCall const ObjCObjectPointerType *OPT = T->getAs<ObjCObjectPointerType>(); 11232b07dd350a0d0b132ed529cb449fe2a5a56103b8John McCall assert(OPT && "Invalid @catch type."); 11242b07dd350a0d0b132ed529cb449fe2a5a56103b8John McCall const ObjCInterfaceDecl *IDecl = OPT->getObjectType()->getInterface(); 11252b07dd350a0d0b132ed529cb449fe2a5a56103b8John McCall assert(IDecl && "Invalid @catch type."); 11262b07dd350a0d0b132ed529cb449fe2a5a56103b8John McCall return MakeConstantString(IDecl->getIdentifier()->getName()); 11272b07dd350a0d0b132ed529cb449fe2a5a56103b8John McCall} 11282b07dd350a0d0b132ed529cb449fe2a5a56103b8John McCall 11292b07dd350a0d0b132ed529cb449fe2a5a56103b8John McCallllvm::Constant *CGObjCGNUstep::GetEHType(QualType T) { 11302b07dd350a0d0b132ed529cb449fe2a5a56103b8John McCall if (!CGM.getLangOpts().CPlusPlus) 11312b07dd350a0d0b132ed529cb449fe2a5a56103b8John McCall return CGObjCGNU::GetEHType(T); 11322b07dd350a0d0b132ed529cb449fe2a5a56103b8John McCall 113380558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall // For Objective-C++, we want to provide the ability to catch both C++ and 113480558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall // Objective-C objects in the same function. 113580558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall 113680558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall // There's a particular fixed type info for 'id'. 113780558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall if (T->isObjCIdType() || 113880558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall T->isObjCQualifiedIdType()) { 113980558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall llvm::Constant *IDEHType = 114080558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall CGM.getModule().getGlobalVariable("__objc_id_type_info"); 114180558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall if (!IDEHType) 114280558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall IDEHType = 114380558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall new llvm::GlobalVariable(CGM.getModule(), PtrToInt8Ty, 114480558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall false, 114580558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall llvm::GlobalValue::ExternalLinkage, 114680558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall 0, "__objc_id_type_info"); 114780558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall return llvm::ConstantExpr::getBitCast(IDEHType, PtrToInt8Ty); 114880558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall } 114980558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall 115080558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall const ObjCObjectPointerType *PT = 115180558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall T->getAs<ObjCObjectPointerType>(); 115280558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall assert(PT && "Invalid @catch type."); 115380558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall const ObjCInterfaceType *IT = PT->getInterfaceType(); 115480558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall assert(IT && "Invalid @catch type."); 115580558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall std::string className = IT->getDecl()->getIdentifier()->getName(); 115680558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall 115780558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall std::string typeinfoName = "__objc_eh_typeinfo_" + className; 115880558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall 115980558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall // Return the existing typeinfo if it exists 116080558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall llvm::Constant *typeinfo = TheModule.getGlobalVariable(typeinfoName); 1161acd76fe8e1b1b3fd83dac66848041629a8b06e8aDavid Chisnall if (typeinfo) 1162acd76fe8e1b1b3fd83dac66848041629a8b06e8aDavid Chisnall return llvm::ConstantExpr::getBitCast(typeinfo, PtrToInt8Ty); 116380558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall 116480558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall // Otherwise create it. 116580558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall 116680558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall // vtable for gnustep::libobjc::__objc_class_type_info 116780558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall // It's quite ugly hard-coding this. Ideally we'd generate it using the host 116880558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall // platform's name mangling. 116980558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall const char *vtableName = "_ZTVN7gnustep7libobjc22__objc_class_type_infoE"; 117080558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall llvm::Constant *Vtable = TheModule.getGlobalVariable(vtableName); 117180558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall if (!Vtable) { 117280558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall Vtable = new llvm::GlobalVariable(TheModule, PtrToInt8Ty, true, 117380558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall llvm::GlobalValue::ExternalLinkage, 0, vtableName); 117480558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall } 117580558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall llvm::Constant *Two = llvm::ConstantInt::get(IntTy, 2); 1176a5c04344fa70d6eec34344760c1fe511e16f2d76Jay Foad Vtable = llvm::ConstantExpr::getGetElementPtr(Vtable, Two); 117780558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall Vtable = llvm::ConstantExpr::getBitCast(Vtable, PtrToInt8Ty); 117880558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall 117980558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall llvm::Constant *typeName = 118080558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall ExportUniqueString(className, "__objc_eh_typename_"); 118180558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall 118280558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall std::vector<llvm::Constant*> fields; 118380558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall fields.push_back(Vtable); 118480558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall fields.push_back(typeName); 118580558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall llvm::Constant *TI = 11867650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner MakeGlobal(llvm::StructType::get(PtrToInt8Ty, PtrToInt8Ty, 118780558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall NULL), fields, "__objc_eh_typeinfo_" + className, 118880558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall llvm::GlobalValue::LinkOnceODRLinkage); 118980558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall return llvm::ConstantExpr::getBitCast(TI, PtrToInt8Ty); 11905a180397870944548aaadeaebf58e415885b9489John McCall} 11915a180397870944548aaadeaebf58e415885b9489John McCall 119220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// Generate an NSConstantString object. 11930d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnallllvm::Constant *CGObjCGNU::GenerateConstantString(const StringLiteral *SL) { 119448272a078e54d501cb05edd797c54b8e82ceb520David Chisnall 11952f4eaef37476ae6891ede8ba215d0f6fd093629bBenjamin Kramer std::string Str = SL->getString().str(); 11960d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall 119748272a078e54d501cb05edd797c54b8e82ceb520David Chisnall // Look for an existing one 119848272a078e54d501cb05edd797c54b8e82ceb520David Chisnall llvm::StringMap<llvm::Constant*>::iterator old = ObjCStrings.find(Str); 119948272a078e54d501cb05edd797c54b8e82ceb520David Chisnall if (old != ObjCStrings.end()) 120048272a078e54d501cb05edd797c54b8e82ceb520David Chisnall return old->getValue(); 120148272a078e54d501cb05edd797c54b8e82ceb520David Chisnall 12024e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie StringRef StringClass = CGM.getLangOpts().ObjCConstantStringClass; 120313df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall 120413df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall if (StringClass.empty()) StringClass = "NXConstantString"; 120513df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall 120613df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall std::string Sym = "_OBJC_CLASS_"; 120713df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall Sym += StringClass; 120813df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall 120913df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall llvm::Constant *isa = TheModule.getNamedGlobal(Sym); 121013df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall 121113df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall if (!isa) 121213df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall isa = new llvm::GlobalVariable(TheModule, IdTy, /* isConstant */false, 121313df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall llvm::GlobalValue::ExternalWeakLinkage, 0, Sym); 121413df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall else if (isa->getType() != PtrToIdTy) 121513df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall isa = llvm::ConstantExpr::getBitCast(isa, PtrToIdTy); 121613df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall 121720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Ivars; 121813df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall Ivars.push_back(isa); 121913fd7e5111032f54b538dd66d035b0ccc1f82467Chris Lattner Ivars.push_back(MakeConstantString(Str)); 12204a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Ivars.push_back(llvm::ConstantInt::get(IntTy, Str.size())); 122120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ObjCStr = MakeGlobal( 122213df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall llvm::StructType::get(PtrToIdTy, PtrToInt8Ty, IntTy, NULL), 122320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Ivars, ".objc_str"); 122448272a078e54d501cb05edd797c54b8e82ceb520David Chisnall ObjCStr = llvm::ConstantExpr::getBitCast(ObjCStr, PtrToInt8Ty); 122548272a078e54d501cb05edd797c54b8e82ceb520David Chisnall ObjCStrings[Str] = ObjCStr; 122648272a078e54d501cb05edd797c54b8e82ceb520David Chisnall ConstantStrings.push_back(ObjCStr); 122720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return ObjCStr; 122820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 122920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 123020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov///Generates a message send where the super is the receiver. This is a message 123120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov///send to self with special delivery semantics indicating which class's method 123220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov///should be called. 12339f6614e3c5d34998dd5a5cc6faf0746dcd611d49David ChisnallRValue 12349f6614e3c5d34998dd5a5cc6faf0746dcd611d49David ChisnallCGObjCGNU::GenerateMessageSendSuper(CodeGenFunction &CGF, 1235ef072fd2f3347cfd857d6eb787b245b950771430John McCall ReturnValueSlot Return, 12367f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar QualType ResultType, 12377f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar Selector Sel, 1238f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar const ObjCInterfaceDecl *Class, 12397ce77920a35060f1c8dd72e541e42ce296ccd168Fariborz Jahanian bool isCategoryImpl, 1240f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar llvm::Value *Receiver, 124119cd87eb5fb3c197e631ce08fd52c446c4d4e8f1Daniel Dunbar bool IsClassMessage, 1242d6c93d703541c992e06eb9a59a2d826a30da65b2Daniel Dunbar const CallArgList &CallArgs, 1243d6c93d703541c992e06eb9a59a2d826a30da65b2Daniel Dunbar const ObjCMethodDecl *Method) { 12440bbe0cfd374d0e564c4570b5e84a77f886c32d52David Chisnall CGBuilderTy &Builder = CGF.Builder; 12454e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (CGM.getLangOpts().getGC() == LangOptions::GCOnly) { 1246ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall if (Sel == RetainSel || Sel == AutoreleaseSel) { 12470bbe0cfd374d0e564c4570b5e84a77f886c32d52David Chisnall return RValue::get(EnforceType(Builder, Receiver, 12480bbe0cfd374d0e564c4570b5e84a77f886c32d52David Chisnall CGM.getTypes().ConvertType(ResultType))); 1249ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 1250ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall if (Sel == ReleaseSel) { 1251ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall return RValue::get(0); 1252ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 1253ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 1254db831948f32217ece8410099f9982ef900c3b3c3David Chisnall 1255bd7370a78604e9a20d698bfe328c1e43f12a0613John McCall llvm::Value *cmd = GetSelector(CGF, Sel); 1256db831948f32217ece8410099f9982ef900c3b3c3David Chisnall 1257b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 1258b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CallArgList ActualArgs; 1259b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 126004c9a49ee251424b11d7c4e8b1c23637684cecb6Eli Friedman ActualArgs.add(RValue::get(EnforceType(Builder, Receiver, IdTy)), ASTIdTy); 126104c9a49ee251424b11d7c4e8b1c23637684cecb6Eli Friedman ActualArgs.add(RValue::get(cmd), CGF.getContext().getObjCSelType()); 1262f85e193739c953358c865005855253af4f68a497John McCall ActualArgs.addFrom(CallArgs); 1263b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 1264de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall MessageSendInfo MSI = getMessageSendInfo(Method, ResultType, ActualArgs); 1265b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 12665efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar llvm::Value *ReceiverClass = 0; 126748e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (isCategoryImpl) { 126848e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner llvm::Constant *classLookupFunction = 0; 126948e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (IsClassMessage) { 127096e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson classLookupFunction = CGM.CreateRuntimeFunction(llvm::FunctionType::get( 1271da549e8995c447542d5631b8b67fcc3a9582797aJay Foad IdTy, PtrTy, true), "objc_get_meta_class"); 127248e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner } else { 127396e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson classLookupFunction = CGM.CreateRuntimeFunction(llvm::FunctionType::get( 1274da549e8995c447542d5631b8b67fcc3a9582797aJay Foad IdTy, PtrTy, true), "objc_get_class"); 12755efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } 1276db831948f32217ece8410099f9982ef900c3b3c3David Chisnall ReceiverClass = Builder.CreateCall(classLookupFunction, 127748e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner MakeConstantString(Class->getNameAsString())); 12785efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } else { 127948e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner // Set up global aliases for the metaclass or class pointer if they do not 128048e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner // already exist. These will are forward-references which will be set to 1281bb1c8600218b3244340331165fc7cba7bf227655Mike Stump // pointers to the class and metaclass structure created for the runtime 1282bb1c8600218b3244340331165fc7cba7bf227655Mike Stump // load function. To send a message to super, we look up the value of the 128348e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner // super_class pointer from either the class or metaclass structure. 128448e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (IsClassMessage) { 128548e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (!MetaClassPtrAlias) { 128648e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner MetaClassPtrAlias = new llvm::GlobalAlias(IdTy, 128748e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner llvm::GlobalValue::InternalLinkage, ".objc_metaclass_ref" + 128848e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner Class->getNameAsString(), NULL, &TheModule); 128948e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner } 129048e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner ReceiverClass = MetaClassPtrAlias; 129148e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner } else { 129248e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (!ClassPtrAlias) { 129348e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner ClassPtrAlias = new llvm::GlobalAlias(IdTy, 129448e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner llvm::GlobalValue::InternalLinkage, ".objc_class_ref" + 129548e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner Class->getNameAsString(), NULL, &TheModule); 129648e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner } 129748e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner ReceiverClass = ClassPtrAlias; 12985efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } 129971238f67c5df13eef19450d66b7a7ab28377192aChris Lattner } 13005efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar // Cast the pointer to a simplified version of the class structure 1301db831948f32217ece8410099f9982ef900c3b3c3David Chisnall ReceiverClass = Builder.CreateBitCast(ReceiverClass, 130296e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual( 13037650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType::get(IdTy, IdTy, NULL))); 13045efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar // Get the superclass pointer 1305db831948f32217ece8410099f9982ef900c3b3c3David Chisnall ReceiverClass = Builder.CreateStructGEP(ReceiverClass, 1); 13065efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar // Load the superclass pointer 1307db831948f32217ece8410099f9982ef900c3b3c3David Chisnall ReceiverClass = Builder.CreateLoad(ReceiverClass); 130820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Construct the structure used to look up the IMP 13097650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *ObjCSuperTy = llvm::StructType::get( 131047a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson Receiver->getType(), IdTy, NULL); 1311db831948f32217ece8410099f9982ef900c3b3c3David Chisnall llvm::Value *ObjCSuper = Builder.CreateAlloca(ObjCSuperTy); 1312b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 1313db831948f32217ece8410099f9982ef900c3b3c3David Chisnall Builder.CreateStore(Receiver, Builder.CreateStructGEP(ObjCSuper, 0)); 1314db831948f32217ece8410099f9982ef900c3b3c3David Chisnall Builder.CreateStore(ReceiverClass, Builder.CreateStructGEP(ObjCSuper, 1)); 131520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 1316c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall ObjCSuper = EnforceType(Builder, ObjCSuper, PtrToObjCSuperTy); 1317db831948f32217ece8410099f9982ef900c3b3c3David Chisnall 1318c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // Get the IMP 131911311eaf6093a5374f94047df354d4c62d68c611Eli Friedman llvm::Value *imp = LookupIMPSuper(CGF, ObjCSuper, cmd, MSI); 1320de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall imp = EnforceType(Builder, imp, MSI.MessengerType); 132120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 1322dd5c98f709837e5dd3da08d44d1ce407975df2cfDavid Chisnall llvm::Value *impMD[] = { 1323dd5c98f709837e5dd3da08d44d1ce407975df2cfDavid Chisnall llvm::MDString::get(VMContext, Sel.getAsString()), 1324dd5c98f709837e5dd3da08d44d1ce407975df2cfDavid Chisnall llvm::MDString::get(VMContext, Class->getSuperClass()->getNameAsString()), 1325dd5c98f709837e5dd3da08d44d1ce407975df2cfDavid Chisnall llvm::ConstantInt::get(llvm::Type::getInt1Ty(VMContext), IsClassMessage) 1326dd5c98f709837e5dd3da08d44d1ce407975df2cfDavid Chisnall }; 13276f141659cab11109d9931d92d0988f8850778de3Jay Foad llvm::MDNode *node = llvm::MDNode::get(VMContext, impMD); 1328dd5c98f709837e5dd3da08d44d1ce407975df2cfDavid Chisnall 13294b02afcb45cd1a384de7d45f440a8be091dd500bDavid Chisnall llvm::Instruction *call; 1330de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall RValue msgRet = CGF.EmitCall(MSI.CallInfo, imp, Return, ActualArgs, 0, &call); 13314b02afcb45cd1a384de7d45f440a8be091dd500bDavid Chisnall call->setMetadata(msgSendMDKind, node); 13324b02afcb45cd1a384de7d45f440a8be091dd500bDavid Chisnall return msgRet; 133320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 133420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 13351eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// Generate code for a message send expression. 13369f6614e3c5d34998dd5a5cc6faf0746dcd611d49David ChisnallRValue 13379f6614e3c5d34998dd5a5cc6faf0746dcd611d49David ChisnallCGObjCGNU::GenerateMessageSend(CodeGenFunction &CGF, 1338ef072fd2f3347cfd857d6eb787b245b950771430John McCall ReturnValueSlot Return, 13397f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar QualType ResultType, 13407f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar Selector Sel, 1341f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar llvm::Value *Receiver, 1342df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian const CallArgList &CallArgs, 1343c6cd5fd3eae71f8841504a396563343cfaaf503eDavid Chisnall const ObjCInterfaceDecl *Class, 1344df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian const ObjCMethodDecl *Method) { 13450bbe0cfd374d0e564c4570b5e84a77f886c32d52David Chisnall CGBuilderTy &Builder = CGF.Builder; 13460bbe0cfd374d0e564c4570b5e84a77f886c32d52David Chisnall 1347664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // Strip out message sends to retain / release in GC mode 13484e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (CGM.getLangOpts().getGC() == LangOptions::GCOnly) { 1349ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall if (Sel == RetainSel || Sel == AutoreleaseSel) { 13500bbe0cfd374d0e564c4570b5e84a77f886c32d52David Chisnall return RValue::get(EnforceType(Builder, Receiver, 13510bbe0cfd374d0e564c4570b5e84a77f886c32d52David Chisnall CGM.getTypes().ConvertType(ResultType))); 1352ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 1353ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall if (Sel == ReleaseSel) { 1354ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall return RValue::get(0); 1355ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 1356ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 1357664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall 1358664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // If the return type is something that goes in an integer register, the 1359664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // runtime will handle 0 returns. For other cases, we fill in the 0 value 1360664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // ourselves. 1361664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // 1362664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // The language spec says the result of this kind of message send is 1363664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // undefined, but lots of people seem to have forgotten to read that 1364664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // paragraph and insist on sending messages to nil that have structure 1365664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // returns. With GCC, this generates a random return value (whatever happens 1366664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // to be on the stack / in those registers at the time) on most platforms, 1367c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // and generates an illegal instruction trap on SPARC. With LLVM it corrupts 1368c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // the stack. 1369c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall bool isPointerSizedReturn = (ResultType->isAnyPointerType() || 1370c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall ResultType->isIntegralOrEnumerationType() || ResultType->isVoidType()); 1371664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall 1372664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::BasicBlock *startBB = 0; 1373664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::BasicBlock *messageBB = 0; 1374a54da05098aff1ca992f5292f3f6a39ec3cef31eDavid Chisnall llvm::BasicBlock *continueBB = 0; 1375664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall 1376664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall if (!isPointerSizedReturn) { 1377664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall startBB = Builder.GetInsertBlock(); 1378664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall messageBB = CGF.createBasicBlock("msgSend"); 1379a54da05098aff1ca992f5292f3f6a39ec3cef31eDavid Chisnall continueBB = CGF.createBasicBlock("continue"); 1380664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall 1381664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::Value *isNil = Builder.CreateICmpEQ(Receiver, 1382664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::Constant::getNullValue(Receiver->getType())); 1383a54da05098aff1ca992f5292f3f6a39ec3cef31eDavid Chisnall Builder.CreateCondBr(isNil, continueBB, messageBB); 1384664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall CGF.EmitBlock(messageBB); 1385664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall } 1386664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall 13870f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall IdTy = cast<llvm::PointerType>(CGM.getTypes().ConvertType(ASTIdTy)); 1388df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian llvm::Value *cmd; 1389df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian if (Method) 1390bd7370a78604e9a20d698bfe328c1e43f12a0613John McCall cmd = GetSelector(CGF, Method); 1391df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian else 1392bd7370a78604e9a20d698bfe328c1e43f12a0613John McCall cmd = GetSelector(CGF, Sel); 1393c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall cmd = EnforceType(Builder, cmd, SelectorTy); 1394c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall Receiver = EnforceType(Builder, Receiver, IdTy); 1395c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 1396c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *impMD[] = { 1397c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::MDString::get(VMContext, Sel.getAsString()), 1398c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::MDString::get(VMContext, Class ? Class->getNameAsString() :""), 1399c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::ConstantInt::get(llvm::Type::getInt1Ty(VMContext), Class!=0) 1400c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall }; 14016f141659cab11109d9931d92d0988f8850778de3Jay Foad llvm::MDNode *node = llvm::MDNode::get(VMContext, impMD); 1402b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 1403c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall CallArgList ActualArgs; 140404c9a49ee251424b11d7c4e8b1c23637684cecb6Eli Friedman ActualArgs.add(RValue::get(Receiver), ASTIdTy); 140504c9a49ee251424b11d7c4e8b1c23637684cecb6Eli Friedman ActualArgs.add(RValue::get(cmd), CGF.getContext().getObjCSelType()); 1406f85e193739c953358c865005855253af4f68a497John McCall ActualArgs.addFrom(CallArgs); 1407de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall 1408de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall MessageSendInfo MSI = getMessageSendInfo(Method, ResultType, ActualArgs); 1409de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall 141089c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall // Get the IMP to call 141189c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall llvm::Value *imp; 141289c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall 141389c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall // If we have non-legacy dispatch specified, we try using the objc_msgSend() 141489c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall // functions. These are not supported on all platforms (or all runtimes on a 141589c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall // given platform), so we 141689c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall switch (CGM.getCodeGenOpts().getObjCDispatchMethod()) { 141789c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall case CodeGenOptions::Legacy: 141811311eaf6093a5374f94047df354d4c62d68c611Eli Friedman imp = LookupIMP(CGF, Receiver, cmd, node, MSI); 141989c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall break; 142089c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall case CodeGenOptions::Mixed: 142189c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall case CodeGenOptions::NonLegacy: 14226f3887ec3652482d2e0e8959d8a89b785330b0b2David Chisnall if (CGM.ReturnTypeUsesFPRet(ResultType)) { 14236f3887ec3652482d2e0e8959d8a89b785330b0b2David Chisnall imp = CGM.CreateRuntimeFunction(llvm::FunctionType::get(IdTy, IdTy, true), 14246f3887ec3652482d2e0e8959d8a89b785330b0b2David Chisnall "objc_msgSend_fpret"); 1425de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall } else if (CGM.ReturnTypeUsesSRet(MSI.CallInfo)) { 142689c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall // The actual types here don't matter - we're going to bitcast the 142789c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall // function anyway 142889c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall imp = CGM.CreateRuntimeFunction(llvm::FunctionType::get(IdTy, IdTy, true), 142989c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall "objc_msgSend_stret"); 143089c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall } else { 143189c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall imp = CGM.CreateRuntimeFunction(llvm::FunctionType::get(IdTy, IdTy, true), 143289c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall "objc_msgSend"); 143389c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall } 143489c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall } 143589c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall 1436403bc3f85f3b3461b73abdd9c632980bf95f34bdDavid Chisnall // Reset the receiver in case the lookup modified it 1437403bc3f85f3b3461b73abdd9c632980bf95f34bdDavid Chisnall ActualArgs[0] = CallArg(RValue::get(Receiver), ASTIdTy, false); 143889c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall 1439de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall imp = EnforceType(Builder, imp, MSI.MessengerType); 144063e742bed90aab2e8e778e48fbbd4bce766b4373David Chisnall 14414b02afcb45cd1a384de7d45f440a8be091dd500bDavid Chisnall llvm::Instruction *call; 1442de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall RValue msgRet = CGF.EmitCall(MSI.CallInfo, imp, Return, ActualArgs, 14434b02afcb45cd1a384de7d45f440a8be091dd500bDavid Chisnall 0, &call); 14444b02afcb45cd1a384de7d45f440a8be091dd500bDavid Chisnall call->setMetadata(msgSendMDKind, node); 1445664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall 1446a54da05098aff1ca992f5292f3f6a39ec3cef31eDavid Chisnall 1447664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall if (!isPointerSizedReturn) { 1448a54da05098aff1ca992f5292f3f6a39ec3cef31eDavid Chisnall messageBB = CGF.Builder.GetInsertBlock(); 1449a54da05098aff1ca992f5292f3f6a39ec3cef31eDavid Chisnall CGF.Builder.CreateBr(continueBB); 1450a54da05098aff1ca992f5292f3f6a39ec3cef31eDavid Chisnall CGF.EmitBlock(continueBB); 1451664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall if (msgRet.isScalar()) { 1452664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::Value *v = msgRet.getScalarVal(); 1453bbf3bacb3e0c1ebb3e8a4a8b1330404a7e379315Jay Foad llvm::PHINode *phi = Builder.CreatePHI(v->getType(), 2); 1454664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi->addIncoming(v, messageBB); 1455664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi->addIncoming(llvm::Constant::getNullValue(v->getType()), startBB); 1456664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall msgRet = RValue::get(phi); 1457664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall } else if (msgRet.isAggregate()) { 1458664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::Value *v = msgRet.getAggregateAddr(); 1459bbf3bacb3e0c1ebb3e8a4a8b1330404a7e379315Jay Foad llvm::PHINode *phi = Builder.CreatePHI(v->getType(), 2); 14602acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::PointerType *RetTy = cast<llvm::PointerType>(v->getType()); 1461866163bf6c66211a9b4d5ba160ac02de04ce4be6David Chisnall llvm::AllocaInst *NullVal = 1462866163bf6c66211a9b4d5ba160ac02de04ce4be6David Chisnall CGF.CreateTempAlloca(RetTy->getElementType(), "null"); 1463664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall CGF.InitTempAlloca(NullVal, 1464664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::Constant::getNullValue(RetTy->getElementType())); 1465664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi->addIncoming(v, messageBB); 1466664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi->addIncoming(NullVal, startBB); 1467664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall msgRet = RValue::getAggregate(phi); 1468664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall } else /* isComplex() */ { 1469664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall std::pair<llvm::Value*,llvm::Value*> v = msgRet.getComplexVal(); 1470bbf3bacb3e0c1ebb3e8a4a8b1330404a7e379315Jay Foad llvm::PHINode *phi = Builder.CreatePHI(v.first->getType(), 2); 1471664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi->addIncoming(v.first, messageBB); 1472664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi->addIncoming(llvm::Constant::getNullValue(v.first->getType()), 1473664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall startBB); 1474bbf3bacb3e0c1ebb3e8a4a8b1330404a7e379315Jay Foad llvm::PHINode *phi2 = Builder.CreatePHI(v.second->getType(), 2); 1475664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi2->addIncoming(v.second, messageBB); 1476664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi2->addIncoming(llvm::Constant::getNullValue(v.second->getType()), 1477664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall startBB); 1478664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall msgRet = RValue::getComplex(phi, phi2); 1479664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall } 1480664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall } 1481664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall return msgRet; 148220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 148320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 14841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// Generates a MethodList. Used in construction of a objc_class and 148520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// objc_category structures. 1486795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendlingllvm::Constant *CGObjCGNU:: 1487795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill WendlingGenerateMethodList(const StringRef &ClassName, 1488795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling const StringRef &CategoryName, 1489795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling ArrayRef<Selector> MethodSels, 1490795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling ArrayRef<llvm::Constant *> MethodTypes, 1491795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling bool isClassMethodList) { 14920f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall if (MethodSels.empty()) 14930f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall return NULLPtr; 14941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Get the method structure type. 14957650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *ObjCMethodTy = llvm::StructType::get( 149620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // Really a selector, but the runtime creates it us. 149720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // Method types 1498c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall IMPTy, //Method pointer 149920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 150020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Methods; 150120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 150220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (unsigned int i = 0, e = MethodTypes.size(); i < e; ++i) { 150320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 15049f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::Constant *Method = 150520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov TheModule.getFunction(SymbolNameForMethod(ClassName, CategoryName, 15069f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall MethodSels[i], 15079f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall isClassMethodList)); 15089f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall assert(Method && "Can't generate metadata for method that doesn't exist"); 15099f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::Constant *C = MakeConstantString(MethodSels[i].getAsString()); 15109f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Elements.push_back(C); 15119f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Elements.push_back(MethodTypes[i]); 15129f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Method = llvm::ConstantExpr::getBitCast(Method, 1513c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall IMPTy); 15149f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Elements.push_back(Method); 15159f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Methods.push_back(llvm::ConstantStruct::get(ObjCMethodTy, Elements)); 151620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 151720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 151820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Array of method structures 151996e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *ObjCMethodArrayTy = llvm::ArrayType::get(ObjCMethodTy, 15201e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian Methods.size()); 15217db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson llvm::Constant *MethodArray = llvm::ConstantArray::get(ObjCMethodArrayTy, 1522fba676396703e87a5034e5f308aa30a633468f66Chris Lattner Methods); 152320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 152420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Structure containing list pointer, array and array count 1525c1c20114a401e503c07d68c47e0728bb063f35c8Chris Lattner llvm::StructType *ObjCMethodListTy = llvm::StructType::create(VMContext); 15269cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::Type *NextPtrTy = llvm::PointerType::getUnqual(ObjCMethodListTy); 15279cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner ObjCMethodListTy->setBody( 15281eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump NextPtrTy, 15291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump IntTy, 153020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ObjCMethodArrayTy, 153120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 153220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 153320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.clear(); 153403e205031b08669f05c41eed5b896fc94c4a12bbOwen Anderson Methods.push_back(llvm::ConstantPointerNull::get( 153596e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(ObjCMethodListTy))); 1536917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall Methods.push_back(llvm::ConstantInt::get(Int32Ty, MethodTypes.size())); 153720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.push_back(MethodArray); 15381eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 153920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an instance of the structure 154020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ObjCMethodListTy, Methods, ".objc_method_list"); 154120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 154220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 154320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// Generates an IvarList. Used in construction of a objc_class. 1544795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendlingllvm::Constant *CGObjCGNU:: 1545795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill WendlingGenerateIvarList(ArrayRef<llvm::Constant *> IvarNames, 1546795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling ArrayRef<llvm::Constant *> IvarTypes, 1547795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling ArrayRef<llvm::Constant *> IvarOffsets) { 15481804463ee790ac3cc73f72597ccb38b983f7d263David Chisnall if (IvarNames.size() == 0) 15491804463ee790ac3cc73f72597ccb38b983f7d263David Chisnall return NULLPtr; 15501eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Get the method structure type. 15517650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *ObjCIvarTy = llvm::StructType::get( 155220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 155320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 155420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IntTy, 155520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 155620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Ivars; 155720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 155820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (unsigned int i = 0, e = IvarNames.size() ; i < e ; i++) { 155920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 15608a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall Elements.push_back(IvarNames[i]); 15618a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall Elements.push_back(IvarTypes[i]); 156220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(IvarOffsets[i]); 156308e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson Ivars.push_back(llvm::ConstantStruct::get(ObjCIvarTy, Elements)); 156420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 156520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 156620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Array of method structures 156796e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *ObjCIvarArrayTy = llvm::ArrayType::get(ObjCIvarTy, 156820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IvarNames.size()); 156920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 15701eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 157120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 15724a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Elements.push_back(llvm::ConstantInt::get(IntTy, (int)IvarNames.size())); 15737db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson Elements.push_back(llvm::ConstantArray::get(ObjCIvarArrayTy, Ivars)); 157420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Structure containing array and array count 15757650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *ObjCIvarListTy = llvm::StructType::get(IntTy, 157620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ObjCIvarArrayTy, 157720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 157820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 157920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an instance of the structure 158020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ObjCIvarListTy, Elements, ".objc_ivar_list"); 15810f984268b05edab2cc555a427c441baa9c252658Chris Lattner} 15820f984268b05edab2cc555a427c441baa9c252658Chris Lattner 158320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// Generate a class structure 158420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::GenerateClassStructure( 158520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MetaClass, 158620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SuperClass, 158720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov unsigned info, 1588d002cc6fc5b72bf00e3b7b4571ccf0f23c789b4bChris Lattner const char *Name, 158920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Version, 159020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *InstanceSize, 159120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *IVars, 159220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Methods, 1593d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *Protocols, 1594d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *IvarOffsets, 15958c757f9ea33dccff4da7810e0c1bda59c19ddc9aDavid Chisnall llvm::Constant *Properties, 1596917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::Constant *StrongIvarBitmap, 1597917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::Constant *WeakIvarBitmap, 15988c757f9ea33dccff4da7810e0c1bda59c19ddc9aDavid Chisnall bool isMeta) { 159920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Set up the class structure 160020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Note: Several of these are char*s when they should be ids. This is 160120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // because the runtime performs this translation on load. 1602d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // 1603d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Fields marked New ABI are part of the GNUstep runtime. We emit them 1604d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // anyway; the classes will still work with the GNU runtime, they will just 1605d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // be ignored. 16067650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *ClassTy = llvm::StructType::get( 160713df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall PtrToInt8Ty, // isa 160820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // super_class 160920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // name 161020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov LongTy, // version 161120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov LongTy, // info 161220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov LongTy, // instance_size 161320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IVars->getType(), // ivars 161420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods->getType(), // methods 16151eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // These are all filled in by the runtime, so we pretend 161620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // dtable 161720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // subclass_list 161820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // sibling_class 161920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // protocols 162020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // gc_object_type 1621d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // New ABI: 1622d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian LongTy, // abi_version 1623d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian IvarOffsets->getType(), // ivar_offsets 1624d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Properties->getType(), // properties 16259d06ba82d8afb1cf01235f38f350ce5ad0c15444David Chisnall IntPtrTy, // strong_pointers 16269d06ba82d8afb1cf01235f38f350ce5ad0c15444David Chisnall IntPtrTy, // weak_pointers 162720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 16284a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson llvm::Constant *Zero = llvm::ConstantInt::get(LongTy, 0); 162920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Fill in the structure 163020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 16313c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getBitCast(MetaClass, PtrToInt8Ty)); 163220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(SuperClass); 1633d002cc6fc5b72bf00e3b7b4571ccf0f23c789b4bChris Lattner Elements.push_back(MakeConstantString(Name, ".class_name")); 163420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(Zero); 16354a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Elements.push_back(llvm::ConstantInt::get(LongTy, info)); 163605f3a507bb53ed2bd5573d551a26654a604187ebDavid Chisnall if (isMeta) { 163725a6a84cf5067b32c271e3ba078676dee838798dMicah Villmow llvm::DataLayout td(&TheModule); 1638e0afc892e75f526f7ecce7dd152d946337632efeKen Dyck Elements.push_back( 1639e0afc892e75f526f7ecce7dd152d946337632efeKen Dyck llvm::ConstantInt::get(LongTy, 1640e0afc892e75f526f7ecce7dd152d946337632efeKen Dyck td.getTypeSizeInBits(ClassTy) / 1641e0afc892e75f526f7ecce7dd152d946337632efeKen Dyck CGM.getContext().getCharWidth())); 164205f3a507bb53ed2bd5573d551a26654a604187ebDavid Chisnall } else 164305f3a507bb53ed2bd5573d551a26654a604187ebDavid Chisnall Elements.push_back(InstanceSize); 164420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(IVars); 164520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(Methods); 1646d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(NULLPtr); 1647d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(NULLPtr); 1648d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(NULLPtr); 16493c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getBitCast(Protocols, PtrTy)); 1650d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(NULLPtr); 1651917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall Elements.push_back(llvm::ConstantInt::get(LongTy, 1)); 1652d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(IvarOffsets); 1653d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(Properties); 1654917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall Elements.push_back(StrongIvarBitmap); 1655917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall Elements.push_back(WeakIvarBitmap); 165620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an instance of the structure 165741d63ed274d1bf7ba7459f218c8f6a385fc5c6d6David Chisnall // This is now an externally visible symbol, so that we can speed up class 165813df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall // messages in the next ABI. We may already have some weak references to 165913df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall // this, so check and fix them properly. 166013df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall std::string ClassSym((isMeta ? "_OBJC_METACLASS_": "_OBJC_CLASS_") + 166113df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall std::string(Name)); 166213df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall llvm::GlobalVariable *ClassRef = TheModule.getNamedGlobal(ClassSym); 166313df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall llvm::Constant *Class = MakeGlobal(ClassTy, Elements, ClassSym, 166413df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall llvm::GlobalValue::ExternalLinkage); 166513df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall if (ClassRef) { 166613df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall ClassRef->replaceAllUsesWith(llvm::ConstantExpr::getBitCast(Class, 166713df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall ClassRef->getType())); 166813df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall ClassRef->removeFromParent(); 166913df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall Class->setName(ClassSym); 167013df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall } 167113df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall return Class; 167220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 167320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 1674795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendlingllvm::Constant *CGObjCGNU:: 1675795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill WendlingGenerateProtocolMethodList(ArrayRef<llvm::Constant *> MethodNames, 1676795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling ArrayRef<llvm::Constant *> MethodTypes) { 16771eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Get the method structure type. 16787650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *ObjCMethodDescTy = llvm::StructType::get( 167920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // Really a selector, but the runtime does the casting for us. 168020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 168120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 168220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Methods; 168320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 168420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (unsigned int i = 0, e = MethodTypes.size() ; i < e ; i++) { 168520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 16861eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Elements.push_back(MethodNames[i]); 16878a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall Elements.push_back(MethodTypes[i]); 168808e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson Methods.push_back(llvm::ConstantStruct::get(ObjCMethodDescTy, Elements)); 168920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 169096e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *ObjCMethodArrayTy = llvm::ArrayType::get(ObjCMethodDescTy, 169120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov MethodNames.size()); 16927db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson llvm::Constant *Array = llvm::ConstantArray::get(ObjCMethodArrayTy, 1693bb1c8600218b3244340331165fc7cba7bf227655Mike Stump Methods); 16947650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *ObjCMethodDescListTy = llvm::StructType::get( 169520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IntTy, ObjCMethodArrayTy, NULL); 169620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.clear(); 16974a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Methods.push_back(llvm::ConstantInt::get(IntTy, MethodNames.size())); 169820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.push_back(Array); 169920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ObjCMethodDescListTy, Methods, ".objc_method_list"); 170020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 1701bb1c8600218b3244340331165fc7cba7bf227655Mike Stump 170220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// Create the protocol list structure used in classes, categories and so on 1703795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendlingllvm::Constant *CGObjCGNU::GenerateProtocolList(ArrayRef<std::string>Protocols){ 170496e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *ProtocolArrayTy = llvm::ArrayType::get(PtrToInt8Ty, 170520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Protocols.size()); 17067650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *ProtocolListTy = llvm::StructType::get( 170720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, //Should be a recurisve pointer, but it's always NULL here. 17088fac25d33b13e25f512dd921d4d5a4b565f5d175David Chisnall SizeTy, 170920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ProtocolArrayTy, 171020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 17111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump std::vector<llvm::Constant*> Elements; 171220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (const std::string *iter = Protocols.begin(), *endIter = Protocols.end(); 171320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter != endIter ; iter++) { 1714ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall llvm::Constant *protocol = 0; 1715ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall llvm::StringMap<llvm::Constant*>::iterator value = 1716ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall ExistingProtocols.find(*iter); 1717ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall if (value == ExistingProtocols.end()) { 1718f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian protocol = GenerateEmptyProtocol(*iter); 1719ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall } else { 1720ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall protocol = value->getValue(); 1721ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall } 17223c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::Constant *Ptr = llvm::ConstantExpr::getBitCast(protocol, 1723a1cf15f4680e5cf39e72e28c5ea854fcba792e84Owen Anderson PtrToInt8Ty); 172420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(Ptr); 172520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 17267db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson llvm::Constant * ProtocolArray = llvm::ConstantArray::get(ProtocolArrayTy, 172720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements); 172820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 172920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 17304a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Elements.push_back(llvm::ConstantInt::get(LongTy, Protocols.size())); 173120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ProtocolArray); 173220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ProtocolListTy, Elements, ".objc_protocol_list"); 173320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 173420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 1735bd7370a78604e9a20d698bfe328c1e43f12a0613John McCallllvm::Value *CGObjCGNU::GenerateProtocolRef(CodeGenFunction &CGF, 1736af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar const ObjCProtocolDecl *PD) { 1737f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::Value *protocol = ExistingProtocols[PD->getNameAsString()]; 17382acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Type *T = 1739f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian CGM.getTypes().ConvertType(CGM.getContext().getObjCProtoType()); 1740bd7370a78604e9a20d698bfe328c1e43f12a0613John McCall return CGF.Builder.CreateBitCast(protocol, llvm::PointerType::getUnqual(T)); 1741f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian} 1742f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian 1743f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanianllvm::Constant *CGObjCGNU::GenerateEmptyProtocol( 1744f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian const std::string &ProtocolName) { 17455f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<std::string, 0> EmptyStringVector; 17465f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 0> EmptyConstantVector; 1747f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian 1748f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::Constant *ProtocolList = GenerateProtocolList(EmptyStringVector); 1749d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *MethodList = 1750f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian GenerateProtocolMethodList(EmptyConstantVector, EmptyConstantVector); 1751f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian // Protocols are objects containing lists of the methods implemented and 1752f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian // protocols adopted. 17537650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *ProtocolTy = llvm::StructType::get(IdTy, 1754f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian PtrToInt8Ty, 1755f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian ProtocolList->getType(), 1756d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MethodList->getType(), 1757d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MethodList->getType(), 1758d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MethodList->getType(), 1759d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MethodList->getType(), 1760f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian NULL); 17611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump std::vector<llvm::Constant*> Elements; 1762f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian // The isa pointer must be set to a magic number so the runtime knows it's 1763f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian // the correct layout. 17643c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getIntToPtr( 1765917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::ConstantInt::get(Int32Ty, ProtocolVersion), IdTy)); 1766f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian Elements.push_back(MakeConstantString(ProtocolName, ".objc_protocol_name")); 1767f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian Elements.push_back(ProtocolList); 1768d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(MethodList); 1769d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(MethodList); 1770d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(MethodList); 1771d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(MethodList); 1772f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian return MakeGlobal(ProtocolTy, Elements, ".objc_protocol"); 177320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 177420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 1775af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbarvoid CGObjCGNU::GenerateProtocol(const ObjCProtocolDecl *PD) { 1776af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar ASTContext &Context = CGM.getContext(); 17778ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string ProtocolName = PD->getNameAsString(); 17781d784b277cdfd4eba03680715d2a082b3f28d295Douglas Gregor 17791d784b277cdfd4eba03680715d2a082b3f28d295Douglas Gregor // Use the protocol definition, if there is one. 17801d784b277cdfd4eba03680715d2a082b3f28d295Douglas Gregor if (const ObjCProtocolDecl *Def = PD->getDefinition()) 17811d784b277cdfd4eba03680715d2a082b3f28d295Douglas Gregor PD = Def; 17821d784b277cdfd4eba03680715d2a082b3f28d295Douglas Gregor 17835f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<std::string, 16> Protocols; 1784af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar for (ObjCProtocolDecl::protocol_iterator PI = PD->protocol_begin(), 1785af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar E = PD->protocol_end(); PI != E; ++PI) 1786d9d22dd9c94618490dbffb0e2caf222530ca39d3Chris Lattner Protocols.push_back((*PI)->getNameAsString()); 17875f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> InstanceMethodNames; 17885f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> InstanceMethodTypes; 17895f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> OptionalInstanceMethodNames; 17905f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> OptionalInstanceMethodTypes; 179117945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis for (ObjCProtocolDecl::instmeth_iterator iter = PD->instmeth_begin(), 179217945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis E = PD->instmeth_end(); iter != E; iter++) { 1793af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar std::string TypeStr; 1794af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar Context.getObjCEncodingForMethodDecl(*iter, TypeStr); 1795d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if ((*iter)->getImplementationControl() == ObjCMethodDecl::Optional) { 1796d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalInstanceMethodNames.push_back( 1797d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MakeConstantString((*iter)->getSelector().getAsString())); 1798d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalInstanceMethodTypes.push_back(MakeConstantString(TypeStr)); 1799a904e01839e8244d39b3d9bfc749ec93f1cbe1e1David Chisnall } else { 1800a904e01839e8244d39b3d9bfc749ec93f1cbe1e1David Chisnall InstanceMethodNames.push_back( 1801a904e01839e8244d39b3d9bfc749ec93f1cbe1e1David Chisnall MakeConstantString((*iter)->getSelector().getAsString())); 1802a904e01839e8244d39b3d9bfc749ec93f1cbe1e1David Chisnall InstanceMethodTypes.push_back(MakeConstantString(TypeStr)); 1803d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1804af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar } 1805af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar // Collect information about class methods: 18065f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> ClassMethodNames; 18075f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> ClassMethodTypes; 18085f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> OptionalClassMethodNames; 18095f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> OptionalClassMethodTypes; 18101eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump for (ObjCProtocolDecl::classmeth_iterator 181117945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = PD->classmeth_begin(), endIter = PD->classmeth_end(); 181217945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter != endIter ; iter++) { 1813af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar std::string TypeStr; 1814af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar Context.getObjCEncodingForMethodDecl((*iter),TypeStr); 1815d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if ((*iter)->getImplementationControl() == ObjCMethodDecl::Optional) { 1816d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalClassMethodNames.push_back( 1817d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MakeConstantString((*iter)->getSelector().getAsString())); 1818d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalClassMethodTypes.push_back(MakeConstantString(TypeStr)); 1819a904e01839e8244d39b3d9bfc749ec93f1cbe1e1David Chisnall } else { 1820a904e01839e8244d39b3d9bfc749ec93f1cbe1e1David Chisnall ClassMethodNames.push_back( 1821a904e01839e8244d39b3d9bfc749ec93f1cbe1e1David Chisnall MakeConstantString((*iter)->getSelector().getAsString())); 1822a904e01839e8244d39b3d9bfc749ec93f1cbe1e1David Chisnall ClassMethodTypes.push_back(MakeConstantString(TypeStr)); 1823d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1824af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar } 182520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 182620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ProtocolList = GenerateProtocolList(Protocols); 182720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *InstanceMethodList = 182820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov GenerateProtocolMethodList(InstanceMethodNames, InstanceMethodTypes); 182920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ClassMethodList = 183020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov GenerateProtocolMethodList(ClassMethodNames, ClassMethodTypes); 1831d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *OptionalInstanceMethodList = 1832d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian GenerateProtocolMethodList(OptionalInstanceMethodNames, 1833d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalInstanceMethodTypes); 1834d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *OptionalClassMethodList = 1835d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian GenerateProtocolMethodList(OptionalClassMethodNames, 1836d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalClassMethodTypes); 1837d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1838d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Property metadata: name, attributes, isSynthesized, setter name, setter 1839d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // types, getter name, getter types. 1840d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // The isSynthesized value is always set to 0 in a protocol. It exists to 1841d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // simplify the runtime library by allowing it to use the same data 1842d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // structures for protocol metadata everywhere. 18437650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *PropertyMetadataTy = llvm::StructType::get( 1844de38cb1fc8429e7adbd59308d19628cfda5aeee6David Chisnall PtrToInt8Ty, Int8Ty, Int8Ty, Int8Ty, Int8Ty, PtrToInt8Ty, 1845de38cb1fc8429e7adbd59308d19628cfda5aeee6David Chisnall PtrToInt8Ty, PtrToInt8Ty, PtrToInt8Ty, NULL); 1846d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> Properties; 1847d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> OptionalProperties; 1848d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1849d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Add all of the property methods need adding to the method list and to the 1850d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // property metadata list. 1851d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian for (ObjCContainerDecl::prop_iterator 1852d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian iter = PD->prop_begin(), endIter = PD->prop_end(); 1853d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian iter != endIter ; iter++) { 1854d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> Fields; 1855581deb3da481053c4993c7600f97acf7768caac5David Blaikie ObjCPropertyDecl *property = *iter; 1856d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1857de38cb1fc8429e7adbd59308d19628cfda5aeee6David Chisnall Fields.push_back(MakePropertyEncodingString(property, 0)); 1858de38cb1fc8429e7adbd59308d19628cfda5aeee6David Chisnall PushPropertyAttributes(Fields, property); 1859891dac73bdb090ff845982e4334f5b4c18353dbeDavid Chisnall 1860d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if (ObjCMethodDecl *getter = property->getGetterMethodDecl()) { 1861d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::string TypeStr; 1862d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Context.getObjCEncodingForMethodDecl(getter,TypeStr); 1863d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *TypeEncoding = MakeConstantString(TypeStr); 1864d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian InstanceMethodTypes.push_back(TypeEncoding); 1865d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(MakeConstantString(getter->getSelector().getAsString())); 1866d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(TypeEncoding); 1867d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 1868d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1869d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1870d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1871d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if (ObjCMethodDecl *setter = property->getSetterMethodDecl()) { 1872d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::string TypeStr; 1873d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Context.getObjCEncodingForMethodDecl(setter,TypeStr); 1874d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *TypeEncoding = MakeConstantString(TypeStr); 1875d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian InstanceMethodTypes.push_back(TypeEncoding); 1876d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(MakeConstantString(setter->getSelector().getAsString())); 1877d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(TypeEncoding); 1878d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 1879d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1880d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1881d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1882d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if (property->getPropertyImplementation() == ObjCPropertyDecl::Optional) { 1883d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalProperties.push_back(llvm::ConstantStruct::get(PropertyMetadataTy, Fields)); 1884d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 1885d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Properties.push_back(llvm::ConstantStruct::get(PropertyMetadataTy, Fields)); 1886d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1887d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1888d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *PropertyArray = llvm::ConstantArray::get( 1889d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ArrayType::get(PropertyMetadataTy, Properties.size()), Properties); 1890d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant* PropertyListInitFields[] = 1891d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian {llvm::ConstantInt::get(IntTy, Properties.size()), NULLPtr, PropertyArray}; 1892d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1893d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *PropertyListInit = 1894c5cbb909e8a27deb8f1a2b6b7bf56a96051af81aChris Lattner llvm::ConstantStruct::getAnon(PropertyListInitFields); 1895d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *PropertyList = new llvm::GlobalVariable(TheModule, 1896d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PropertyListInit->getType(), false, llvm::GlobalValue::InternalLinkage, 1897d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PropertyListInit, ".objc_property_list"); 1898d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1899d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *OptionalPropertyArray = 1900d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ConstantArray::get(llvm::ArrayType::get(PropertyMetadataTy, 1901d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalProperties.size()) , OptionalProperties); 1902d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant* OptionalPropertyListInitFields[] = { 1903d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ConstantInt::get(IntTy, OptionalProperties.size()), NULLPtr, 1904d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalPropertyArray }; 1905d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1906d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *OptionalPropertyListInit = 1907c5cbb909e8a27deb8f1a2b6b7bf56a96051af81aChris Lattner llvm::ConstantStruct::getAnon(OptionalPropertyListInitFields); 1908d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *OptionalPropertyList = new llvm::GlobalVariable(TheModule, 1909d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalPropertyListInit->getType(), false, 1910d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::GlobalValue::InternalLinkage, OptionalPropertyListInit, 1911d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ".objc_property_list"); 1912d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 191320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Protocols are objects containing lists of the methods implemented and 191420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // protocols adopted. 19157650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *ProtocolTy = llvm::StructType::get(IdTy, 191620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 191720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ProtocolList->getType(), 191820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov InstanceMethodList->getType(), 191920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ClassMethodList->getType(), 1920d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalInstanceMethodList->getType(), 1921d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalClassMethodList->getType(), 1922d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PropertyList->getType(), 1923d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalPropertyList->getType(), 192420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 19251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump std::vector<llvm::Constant*> Elements; 192620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // The isa pointer must be set to a magic number so the runtime knows it's 192720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // the correct layout. 19283c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getIntToPtr( 1929917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::ConstantInt::get(Int32Ty, ProtocolVersion), IdTy)); 193020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(MakeConstantString(ProtocolName, ".objc_protocol_name")); 193120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ProtocolList); 193220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(InstanceMethodList); 193320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ClassMethodList); 1934d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(OptionalInstanceMethodList); 1935d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(OptionalClassMethodList); 1936d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(PropertyList); 1937d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(OptionalPropertyList); 19381eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump ExistingProtocols[ProtocolName] = 19393c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::ConstantExpr::getBitCast(MakeGlobal(ProtocolTy, Elements, 194020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ".objc_protocol"), IdTy); 194120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 1942c4a77906c259cba58c147d8468c406a430ecdcbbDmitri Gribenkovoid CGObjCGNU::GenerateProtocolHolderCategory() { 1943d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Collect information about instance methods 19445f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<Selector, 1> MethodSels; 19455f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 1> MethodTypes; 1946d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1947d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> Elements; 1948d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian const std::string ClassName = "__ObjC_Protocol_Holder_Ugly_Hack"; 1949d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian const std::string CategoryName = "AnotherHack"; 1950d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(MakeConstantString(CategoryName)); 1951d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(MakeConstantString(ClassName)); 1952d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Instance method list 1953d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(llvm::ConstantExpr::getBitCast(GenerateMethodList( 1954d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ClassName, CategoryName, MethodSels, MethodTypes, false), PtrTy)); 1955d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Class method list 1956d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(llvm::ConstantExpr::getBitCast(GenerateMethodList( 1957d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ClassName, CategoryName, MethodSels, MethodTypes, true), PtrTy)); 1958d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Protocol list 1959d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ArrayType *ProtocolArrayTy = llvm::ArrayType::get(PtrTy, 1960d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ExistingProtocols.size()); 19617650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *ProtocolListTy = llvm::StructType::get( 1962d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrTy, //Should be a recurisve pointer, but it's always NULL here. 19638fac25d33b13e25f512dd921d4d5a4b565f5d175David Chisnall SizeTy, 1964d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolArrayTy, 1965d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian NULL); 1966d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> ProtocolElements; 1967d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian for (llvm::StringMapIterator<llvm::Constant*> iter = 1968d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ExistingProtocols.begin(), endIter = ExistingProtocols.end(); 1969d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian iter != endIter ; iter++) { 1970d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *Ptr = llvm::ConstantExpr::getBitCast(iter->getValue(), 1971d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrTy); 1972d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements.push_back(Ptr); 1973d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1974d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant * ProtocolArray = llvm::ConstantArray::get(ProtocolArrayTy, 1975d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements); 1976d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements.clear(); 1977d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements.push_back(NULLPtr); 1978d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements.push_back(llvm::ConstantInt::get(LongTy, 1979d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ExistingProtocols.size())); 1980d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements.push_back(ProtocolArray); 1981d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(llvm::ConstantExpr::getBitCast(MakeGlobal(ProtocolListTy, 1982d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements, ".objc_protocol_list"), PtrTy)); 1983d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Categories.push_back(llvm::ConstantExpr::getBitCast( 19847650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner MakeGlobal(llvm::StructType::get(PtrToInt8Ty, PtrToInt8Ty, 1985d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrTy, PtrTy, PtrTy, NULL), Elements), PtrTy)); 1986d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian} 198720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 1988917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall/// Libobjc2 uses a bitfield representation where small(ish) bitfields are 1989917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall/// stored in a 64-bit value with the low bit set to 1 and the remaining 63 1990917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall/// bits set to their values, LSB first, while larger ones are stored in a 1991917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall/// structure of this / form: 1992917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall/// 1993917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall/// struct { int32_t length; int32_t values[length]; }; 1994917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall/// 1995917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall/// The values in the array are stored in host-endian format, with the least 1996917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall/// significant bit being assumed to come first in the bitfield. Therefore, a 1997917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall/// bitfield with the 64th bit set will be (int64_t)&{ 2, [0, 1<<31] }, while a 1998917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall/// bitfield / with the 63rd bit set will be 1<<64. 1999795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendlingllvm::Constant *CGObjCGNU::MakeBitField(ArrayRef<bool> bits) { 2000917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall int bitCount = bits.size(); 20019d06ba82d8afb1cf01235f38f350ce5ad0c15444David Chisnall int ptrBits = 20029d06ba82d8afb1cf01235f38f350ce5ad0c15444David Chisnall (TheModule.getPointerSize() == llvm::Module::Pointer32) ? 32 : 64; 20039d06ba82d8afb1cf01235f38f350ce5ad0c15444David Chisnall if (bitCount < ptrBits) { 2004917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall uint64_t val = 1; 2005917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall for (int i=0 ; i<bitCount ; ++i) { 2006e3c944a9f620dacb0c29d16e7d61c8e7fca10963Eli Friedman if (bits[i]) val |= 1ULL<<(i+1); 2007917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall } 20089d06ba82d8afb1cf01235f38f350ce5ad0c15444David Chisnall return llvm::ConstantInt::get(IntPtrTy, val); 2009917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall } 2010cfa88f893915ceb8ae4ce2f17c46c24a4d67502fDmitri Gribenko SmallVector<llvm::Constant *, 8> values; 2011917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall int v=0; 2012917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall while (v < bitCount) { 2013917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall int32_t word = 0; 2014917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall for (int i=0 ; (i<32) && (v<bitCount) ; ++i) { 2015917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall if (bits[v]) word |= 1<<i; 2016917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall v++; 2017917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall } 2018917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall values.push_back(llvm::ConstantInt::get(Int32Ty, word)); 2019917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall } 2020917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::ArrayType *arrayTy = llvm::ArrayType::get(Int32Ty, values.size()); 2021917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::Constant *array = llvm::ConstantArray::get(arrayTy, values); 2022917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::Constant *fields[2] = { 2023917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::ConstantInt::get(Int32Ty, values.size()), 2024917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall array }; 2025917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::Constant *GS = MakeGlobal(llvm::StructType::get(Int32Ty, arrayTy, 2026917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall NULL), fields); 202749de5289acea91c9d224c9aadd4d527e8f9fdaffDavid Chisnall llvm::Constant *ptr = llvm::ConstantExpr::getPtrToInt(GS, IntPtrTy); 202849de5289acea91c9d224c9aadd4d527e8f9fdaffDavid Chisnall return ptr; 2029917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall} 2030917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall 20317ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbarvoid CGObjCGNU::GenerateCategory(const ObjCCategoryImplDecl *OCD) { 20328ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string ClassName = OCD->getClassInterface()->getNameAsString(); 20338ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string CategoryName = OCD->getNameAsString(); 20347ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about instance methods 20355f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<Selector, 16> InstanceMethodSels; 20365f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> InstanceMethodTypes; 2037653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor for (ObjCCategoryImplDecl::instmeth_iterator 203817945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = OCD->instmeth_begin(), endIter = OCD->instmeth_end(); 2039653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter != endIter ; iter++) { 20407ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar InstanceMethodSels.push_back((*iter)->getSelector()); 20417ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 20427ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar CGM.getContext().getObjCEncodingForMethodDecl(*iter,TypeStr); 20438a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall InstanceMethodTypes.push_back(MakeConstantString(TypeStr)); 20447ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 20457ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 20467ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about class methods 20475f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<Selector, 16> ClassMethodSels; 20485f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> ClassMethodTypes; 20491eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump for (ObjCCategoryImplDecl::classmeth_iterator 205017945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = OCD->classmeth_begin(), endIter = OCD->classmeth_end(); 2051653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter != endIter ; iter++) { 20527ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar ClassMethodSels.push_back((*iter)->getSelector()); 20537ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 20547ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar CGM.getContext().getObjCEncodingForMethodDecl(*iter,TypeStr); 20558a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall ClassMethodTypes.push_back(MakeConstantString(TypeStr)); 20567ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 20577ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 20587ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect the names of referenced protocols 20595f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<std::string, 16> Protocols; 2060ad9e06d82ae627e858e5bfe4a7f1f9337b5b0a15David Chisnall const ObjCCategoryDecl *CatDecl = OCD->getCategoryDecl(); 2061ad9e06d82ae627e858e5bfe4a7f1f9337b5b0a15David Chisnall const ObjCList<ObjCProtocolDecl> &Protos = CatDecl->getReferencedProtocols(); 20627ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar for (ObjCList<ObjCProtocolDecl>::iterator I = Protos.begin(), 20637ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar E = Protos.end(); I != E; ++I) 2064d9d22dd9c94618490dbffb0e2caf222530ca39d3Chris Lattner Protocols.push_back((*I)->getNameAsString()); 20657ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 206620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 206720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(MakeConstantString(CategoryName)); 206820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(MakeConstantString(ClassName)); 20691eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Instance method list 20703c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getBitCast(GenerateMethodList( 2071a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner ClassName, CategoryName, InstanceMethodSels, InstanceMethodTypes, 207220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov false), PtrTy)); 207320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Class method list 20743c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getBitCast(GenerateMethodList( 2075a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner ClassName, CategoryName, ClassMethodSels, ClassMethodTypes, true), 207620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy)); 207720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Protocol list 20783c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getBitCast( 207920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov GenerateProtocolList(Protocols), PtrTy)); 20803c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Categories.push_back(llvm::ConstantExpr::getBitCast( 20817650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner MakeGlobal(llvm::StructType::get(PtrToInt8Ty, PtrToInt8Ty, 208247a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson PtrTy, PtrTy, PtrTy, NULL), Elements), PtrTy)); 208320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 20847ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 2085d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanianllvm::Constant *CGObjCGNU::GeneratePropertyList(const ObjCImplementationDecl *OID, 20865f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVectorImpl<Selector> &InstanceMethodSels, 20875f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVectorImpl<llvm::Constant*> &InstanceMethodTypes) { 2088d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ASTContext &Context = CGM.getContext(); 2089de38cb1fc8429e7adbd59308d19628cfda5aeee6David Chisnall // Property metadata: name, attributes, attributes2, padding1, padding2, 2090de38cb1fc8429e7adbd59308d19628cfda5aeee6David Chisnall // setter name, setter types, getter name, getter types. 20917650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *PropertyMetadataTy = llvm::StructType::get( 2092de38cb1fc8429e7adbd59308d19628cfda5aeee6David Chisnall PtrToInt8Ty, Int8Ty, Int8Ty, Int8Ty, Int8Ty, PtrToInt8Ty, 2093de38cb1fc8429e7adbd59308d19628cfda5aeee6David Chisnall PtrToInt8Ty, PtrToInt8Ty, PtrToInt8Ty, NULL); 2094d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> Properties; 2095d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 2096d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Add all of the property methods need adding to the method list and to the 2097d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // property metadata list. 2098d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian for (ObjCImplDecl::propimpl_iterator 2099d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian iter = OID->propimpl_begin(), endIter = OID->propimpl_end(); 2100d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian iter != endIter ; iter++) { 2101d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> Fields; 2102262bc18e32500558af7cb0afa205b34bd37bafedDavid Blaikie ObjCPropertyDecl *property = iter->getPropertyDecl(); 2103581deb3da481053c4993c7600f97acf7768caac5David Blaikie ObjCPropertyImplDecl *propertyImpl = *iter; 210442ba04a072c69d84a6660e4498215086662910acDavid Chisnall bool isSynthesized = (propertyImpl->getPropertyImplementation() == 210542ba04a072c69d84a6660e4498215086662910acDavid Chisnall ObjCPropertyImplDecl::Synthesize); 2106de38cb1fc8429e7adbd59308d19628cfda5aeee6David Chisnall bool isDynamic = (propertyImpl->getPropertyImplementation() == 2107de38cb1fc8429e7adbd59308d19628cfda5aeee6David Chisnall ObjCPropertyImplDecl::Dynamic); 2108d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 2109891dac73bdb090ff845982e4334f5b4c18353dbeDavid Chisnall Fields.push_back(MakePropertyEncodingString(property, OID)); 2110de38cb1fc8429e7adbd59308d19628cfda5aeee6David Chisnall PushPropertyAttributes(Fields, property, isSynthesized, isDynamic); 2111d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if (ObjCMethodDecl *getter = property->getGetterMethodDecl()) { 2112d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::string TypeStr; 2113d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Context.getObjCEncodingForMethodDecl(getter,TypeStr); 2114d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *TypeEncoding = MakeConstantString(TypeStr); 211542ba04a072c69d84a6660e4498215086662910acDavid Chisnall if (isSynthesized) { 211642ba04a072c69d84a6660e4498215086662910acDavid Chisnall InstanceMethodTypes.push_back(TypeEncoding); 211742ba04a072c69d84a6660e4498215086662910acDavid Chisnall InstanceMethodSels.push_back(getter->getSelector()); 211842ba04a072c69d84a6660e4498215086662910acDavid Chisnall } 2119d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(MakeConstantString(getter->getSelector().getAsString())); 2120d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(TypeEncoding); 2121d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 2122d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 2123d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 2124d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 2125d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if (ObjCMethodDecl *setter = property->getSetterMethodDecl()) { 2126d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::string TypeStr; 2127d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Context.getObjCEncodingForMethodDecl(setter,TypeStr); 2128d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *TypeEncoding = MakeConstantString(TypeStr); 212942ba04a072c69d84a6660e4498215086662910acDavid Chisnall if (isSynthesized) { 213042ba04a072c69d84a6660e4498215086662910acDavid Chisnall InstanceMethodTypes.push_back(TypeEncoding); 213142ba04a072c69d84a6660e4498215086662910acDavid Chisnall InstanceMethodSels.push_back(setter->getSelector()); 213242ba04a072c69d84a6660e4498215086662910acDavid Chisnall } 2133d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(MakeConstantString(setter->getSelector().getAsString())); 2134d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(TypeEncoding); 2135d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 2136d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 2137d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 2138d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 2139d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Properties.push_back(llvm::ConstantStruct::get(PropertyMetadataTy, Fields)); 2140d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 2141d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ArrayType *PropertyArrayTy = 2142d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ArrayType::get(PropertyMetadataTy, Properties.size()); 2143d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *PropertyArray = llvm::ConstantArray::get(PropertyArrayTy, 2144d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Properties); 2145d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant* PropertyListInitFields[] = 2146d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian {llvm::ConstantInt::get(IntTy, Properties.size()), NULLPtr, PropertyArray}; 2147d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 2148d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *PropertyListInit = 2149c5cbb909e8a27deb8f1a2b6b7bf56a96051af81aChris Lattner llvm::ConstantStruct::getAnon(PropertyListInitFields); 2150d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian return new llvm::GlobalVariable(TheModule, PropertyListInit->getType(), false, 2151d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::GlobalValue::InternalLinkage, PropertyListInit, 2152d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ".objc_property_list"); 2153d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian} 2154d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 215529254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnallvoid CGObjCGNU::RegisterAlias(const ObjCCompatibleAliasDecl *OAD) { 215629254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall // Get the class declaration for which the alias is specified. 215729254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall ObjCInterfaceDecl *ClassDecl = 215829254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall const_cast<ObjCInterfaceDecl *>(OAD->getClassInterface()); 215929254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall std::string ClassName = ClassDecl->getNameAsString(); 216029254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall std::string AliasName = OAD->getNameAsString(); 216129254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall ClassAliases.push_back(ClassAliasPair(ClassName,AliasName)); 216229254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall} 216329254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall 21647ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbarvoid CGObjCGNU::GenerateClass(const ObjCImplementationDecl *OID) { 21657ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar ASTContext &Context = CGM.getContext(); 21667ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 21677ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Get the superclass name. 21681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const ObjCInterfaceDecl * SuperClassDecl = 21697ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar OID->getClassInterface()->getSuperClass(); 21708ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string SuperClassName; 21712a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner if (SuperClassDecl) { 21728ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner SuperClassName = SuperClassDecl->getNameAsString(); 21732a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner EmitClassRef(SuperClassName); 21742a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner } 21757ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 21767ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Get the class name 217709dc6660487fc2f4a4bb2032e30123d3e0da7230Chris Lattner ObjCInterfaceDecl *ClassDecl = 217809dc6660487fc2f4a4bb2032e30123d3e0da7230Chris Lattner const_cast<ObjCInterfaceDecl *>(OID->getClassInterface()); 21798ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string ClassName = ClassDecl->getNameAsString(); 21802a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner // Emit the symbol that is used to generate linker errors if this class is 21812a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner // referenced in other modules but not declared. 2182c51db23f58bd887b16cf91554aa86c430a2496e7Fariborz Jahanian std::string classSymbolName = "__objc_class_name_" + ClassName; 21831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (llvm::GlobalVariable *symbol = 2184c51db23f58bd887b16cf91554aa86c430a2496e7Fariborz Jahanian TheModule.getGlobalVariable(classSymbolName)) { 21854a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson symbol->setInitializer(llvm::ConstantInt::get(LongTy, 0)); 2186c51db23f58bd887b16cf91554aa86c430a2496e7Fariborz Jahanian } else { 21871c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson new llvm::GlobalVariable(TheModule, LongTy, false, 21884a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson llvm::GlobalValue::ExternalLinkage, llvm::ConstantInt::get(LongTy, 0), 21891c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson classSymbolName); 2190c51db23f58bd887b16cf91554aa86c430a2496e7Fariborz Jahanian } 21911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 21922bebbf0acee55404de4b8846713b64429e744e8fDaniel Dunbar // Get the size of instances. 21935f022d82696c84e4d127c558871d68ac6273274eKen Dyck int instanceSize = 21945f022d82696c84e4d127c558871d68ac6273274eKen Dyck Context.getASTObjCImplementationLayout(OID).getSize().getQuantity(); 21957ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 21967ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about instance variables. 21975f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> IvarNames; 21985f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> IvarTypes; 21995f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> IvarOffsets; 22001eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2201d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> IvarOffsetValues; 2202917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall SmallVector<bool, 16> WeakIvars; 2203917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall SmallVector<bool, 16> StrongIvars; 2204d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 22051eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump int superInstanceSize = !SuperClassDecl ? 0 : 22065f022d82696c84e4d127c558871d68ac6273274eKen Dyck Context.getASTObjCInterfaceLayout(SuperClassDecl).getSize().getQuantity(); 22079cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // For non-fragile ivars, set the instance size to 0 - {the size of just this 22089cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // class}. The runtime will then set this to the correct value on load. 22097edf9e38b91917b661277601c0e448eef0eb2b56Richard Smith if (CGM.getLangOpts().ObjCRuntime.isNonFragile()) { 22109cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian instanceSize = 0 - (instanceSize - superInstanceSize); 22119cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 22127f63cb098f2461643f71ea590c1a477603f27f63David Chisnall 2213db8264e4c5ffd7af6fbad4ca4306bd382bb02691Jordy Rose for (const ObjCIvarDecl *IVD = ClassDecl->all_declared_ivar_begin(); IVD; 2214db8264e4c5ffd7af6fbad4ca4306bd382bb02691Jordy Rose IVD = IVD->getNextIvar()) { 22157ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Store the name 22167f63cb098f2461643f71ea590c1a477603f27f63David Chisnall IvarNames.push_back(MakeConstantString(IVD->getNameAsString())); 22177ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Get the type encoding for this ivar 22187ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 22197f63cb098f2461643f71ea590c1a477603f27f63David Chisnall Context.getObjCEncodingForType(IVD->getType(), TypeStr); 22208a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall IvarTypes.push_back(MakeConstantString(TypeStr)); 22217ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Get the offset 2222e5b4666d9b86ea30b90b599691e75d380f84ddd6Eli Friedman uint64_t BaseOffset = ComputeIvarBaseOffset(CGM, OID, IVD); 2223aecbf24a6bad049437f8fec97e557d414003a3dbDavid Chisnall uint64_t Offset = BaseOffset; 22247edf9e38b91917b661277601c0e448eef0eb2b56Richard Smith if (CGM.getLangOpts().ObjCRuntime.isNonFragile()) { 2225d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Offset = BaseOffset - superInstanceSize; 22269cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 222763ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall llvm::Constant *OffsetValue = llvm::ConstantInt::get(IntTy, Offset); 222863ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall // Create the direct offset value 222963ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall std::string OffsetName = "__objc_ivar_offset_value_" + ClassName +"." + 223063ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall IVD->getNameAsString(); 223163ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall llvm::GlobalVariable *OffsetVar = TheModule.getGlobalVariable(OffsetName); 223263ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall if (OffsetVar) { 223363ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall OffsetVar->setInitializer(OffsetValue); 223463ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall // If this is the real definition, change its linkage type so that 223563ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall // different modules will use this one, rather than their private 223663ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall // copy. 223763ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall OffsetVar->setLinkage(llvm::GlobalValue::ExternalLinkage); 223863ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall } else 223963ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall OffsetVar = new llvm::GlobalVariable(TheModule, IntTy, 2240d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian false, llvm::GlobalValue::ExternalLinkage, 224163ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall OffsetValue, 2242d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian "__objc_ivar_offset_value_" + ClassName +"." + 224363ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall IVD->getNameAsString()); 224463ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall IvarOffsets.push_back(OffsetValue); 224563ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall IvarOffsetValues.push_back(OffsetVar); 2246917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall Qualifiers::ObjCLifetime lt = IVD->getType().getQualifiers().getObjCLifetime(); 2247917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall switch (lt) { 2248917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall case Qualifiers::OCL_Strong: 2249917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall StrongIvars.push_back(true); 2250917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall WeakIvars.push_back(false); 2251917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall break; 2252917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall case Qualifiers::OCL_Weak: 2253917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall StrongIvars.push_back(false); 2254917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall WeakIvars.push_back(true); 2255917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall break; 2256917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall default: 2257917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall StrongIvars.push_back(false); 2258917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall WeakIvars.push_back(false); 2259917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall } 22607ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 2261917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::Constant *StrongIvarBitmap = MakeBitField(StrongIvars); 2262917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::Constant *WeakIvarBitmap = MakeBitField(WeakIvars); 22639f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::GlobalVariable *IvarOffsetArray = 22649f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall MakeGlobalArray(PtrToIntTy, IvarOffsetValues, ".ivar.offsets"); 22659f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 22667ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 22677ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about instance methods 22685f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<Selector, 16> InstanceMethodSels; 22695f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> InstanceMethodTypes; 22701eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump for (ObjCImplementationDecl::instmeth_iterator 227117945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = OID->instmeth_begin(), endIter = OID->instmeth_end(); 2272653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter != endIter ; iter++) { 22737ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar InstanceMethodSels.push_back((*iter)->getSelector()); 22747ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 22757ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar Context.getObjCEncodingForMethodDecl((*iter),TypeStr); 22768a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall InstanceMethodTypes.push_back(MakeConstantString(TypeStr)); 22777ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 2278d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 2279d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *Properties = GeneratePropertyList(OID, InstanceMethodSels, 2280d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian InstanceMethodTypes); 2281d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 22827ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 22837ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about class methods 22845f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<Selector, 16> ClassMethodSels; 22855f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> ClassMethodTypes; 2286653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor for (ObjCImplementationDecl::classmeth_iterator 228717945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = OID->classmeth_begin(), endIter = OID->classmeth_end(); 2288653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter != endIter ; iter++) { 22897ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar ClassMethodSels.push_back((*iter)->getSelector()); 22907ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 22917ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar Context.getObjCEncodingForMethodDecl((*iter),TypeStr); 22928a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall ClassMethodTypes.push_back(MakeConstantString(TypeStr)); 22937ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 22947ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect the names of referenced protocols 22955f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<std::string, 16> Protocols; 2296a5f4441de7890953460d95f4e88b9fa432b48dc2Argyrios Kyrtzidis for (ObjCInterfaceDecl::protocol_iterator 2297a5f4441de7890953460d95f4e88b9fa432b48dc2Argyrios Kyrtzidis I = ClassDecl->protocol_begin(), 2298a5f4441de7890953460d95f4e88b9fa432b48dc2Argyrios Kyrtzidis E = ClassDecl->protocol_end(); I != E; ++I) 2299d9d22dd9c94618490dbffb0e2caf222530ca39d3Chris Lattner Protocols.push_back((*I)->getNameAsString()); 23007ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 23017ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 23027ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 230320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Get the superclass pointer. 230420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SuperClass; 23058ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner if (!SuperClassName.empty()) { 230620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov SuperClass = MakeConstantString(SuperClassName, ".super_class_name"); 230720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } else { 230803e205031b08669f05c41eed5b896fc94c4a12bbOwen Anderson SuperClass = llvm::ConstantPointerNull::get(PtrToInt8Ty); 230920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 231020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Empty vector used to construct empty method lists 23115f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 1> empty; 231220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Generate the method and instance variable lists 231320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MethodList = GenerateMethodList(ClassName, "", 2314a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner InstanceMethodSels, InstanceMethodTypes, false); 231520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ClassMethodList = GenerateMethodList(ClassName, "", 2316a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner ClassMethodSels, ClassMethodTypes, true); 231720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *IvarList = GenerateIvarList(IvarNames, IvarTypes, 231820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IvarOffsets); 23191eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Irrespective of whether we are compiling for a fragile or non-fragile ABI, 23208a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // we emit a symbol containing the offset for each ivar in the class. This 23218a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // allows code compiled for the non-Fragile ABI to inherit from code compiled 23228a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // for the legacy ABI, without causing problems. The converse is also 23238a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // possible, but causes all ivar accesses to be fragile. 2324e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall 23258a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // Offset pointer for getting at the correct field in the ivar list when 23268a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // setting up the alias. These are: The base address for the global, the 23278a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // ivar array (second field), the ivar in this list (set for each ivar), and 23288a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // the offset (third field in ivar structure) 2329917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::Type *IndexTy = Int32Ty; 23308a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::Constant *offsetPointerIndexes[] = {Zeros[0], 23311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::ConstantInt::get(IndexTy, 1), 0, 23328a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::ConstantInt::get(IndexTy, 2) }; 23338a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall 2334db8264e4c5ffd7af6fbad4ca4306bd382bb02691Jordy Rose unsigned ivarIndex = 0; 2335db8264e4c5ffd7af6fbad4ca4306bd382bb02691Jordy Rose for (const ObjCIvarDecl *IVD = ClassDecl->all_declared_ivar_begin(); IVD; 2336db8264e4c5ffd7af6fbad4ca4306bd382bb02691Jordy Rose IVD = IVD->getNextIvar()) { 23378a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall const std::string Name = "__objc_ivar_offset_" + ClassName + '.' 2338e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall + IVD->getNameAsString(); 2339db8264e4c5ffd7af6fbad4ca4306bd382bb02691Jordy Rose offsetPointerIndexes[2] = llvm::ConstantInt::get(IndexTy, ivarIndex); 23408a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // Get the correct ivar field 23418a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::Constant *offsetValue = llvm::ConstantExpr::getGetElementPtr( 2342a5c04344fa70d6eec34344760c1fe511e16f2d76Jay Foad IvarList, offsetPointerIndexes); 2343e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // Get the existing variable, if one exists. 23448a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::GlobalVariable *offset = TheModule.getNamedGlobal(Name); 23458a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall if (offset) { 234674a1a1f0b6f6c4468444196a02c033be521f7d79Ted Kremenek offset->setInitializer(offsetValue); 234774a1a1f0b6f6c4468444196a02c033be521f7d79Ted Kremenek // If this is the real definition, change its linkage type so that 234874a1a1f0b6f6c4468444196a02c033be521f7d79Ted Kremenek // different modules will use this one, rather than their private 234974a1a1f0b6f6c4468444196a02c033be521f7d79Ted Kremenek // copy. 235074a1a1f0b6f6c4468444196a02c033be521f7d79Ted Kremenek offset->setLinkage(llvm::GlobalValue::ExternalLinkage); 23518a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall } else { 235274a1a1f0b6f6c4468444196a02c033be521f7d79Ted Kremenek // Add a new alias if there isn't one already. 235374a1a1f0b6f6c4468444196a02c033be521f7d79Ted Kremenek offset = new llvm::GlobalVariable(TheModule, offsetValue->getType(), 235474a1a1f0b6f6c4468444196a02c033be521f7d79Ted Kremenek false, llvm::GlobalValue::ExternalLinkage, offsetValue, Name); 235574a1a1f0b6f6c4468444196a02c033be521f7d79Ted Kremenek (void) offset; // Silence dead store warning. 23568a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall } 2357db8264e4c5ffd7af6fbad4ca4306bd382bb02691Jordy Rose ++ivarIndex; 23588a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall } 23599d06ba82d8afb1cf01235f38f350ce5ad0c15444David Chisnall llvm::Constant *ZeroPtr = llvm::ConstantInt::get(IntPtrTy, 0); 236020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov //Generate metaclass for class methods 236120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MetaClassStruct = GenerateClassStructure(NULLPtr, 23621804463ee790ac3cc73f72597ccb38b983f7d263David Chisnall NULLPtr, 0x12L, ClassName.c_str(), 0, Zeros[0], GenerateIvarList( 2363917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall empty, empty, empty), ClassMethodList, NULLPtr, 23649d06ba82d8afb1cf01235f38f350ce5ad0c15444David Chisnall NULLPtr, NULLPtr, ZeroPtr, ZeroPtr, true); 23655efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar 236620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Generate the class structure 23678ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner llvm::Constant *ClassStruct = 2368d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian GenerateClassStructure(MetaClassStruct, SuperClass, 0x11L, 23698ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner ClassName.c_str(), 0, 23704a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson llvm::ConstantInt::get(LongTy, instanceSize), IvarList, 2371d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MethodList, GenerateProtocolList(Protocols), IvarOffsetArray, 2372917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall Properties, StrongIvarBitmap, WeakIvarBitmap); 23735efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar 23745efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar // Resolve the class aliases, if they exist. 23755efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar if (ClassPtrAlias) { 23760b9c22b61a3c99c8c0e8d898adb0f60afa76584eDavid Chisnall ClassPtrAlias->replaceAllUsesWith( 23773c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::ConstantExpr::getBitCast(ClassStruct, IdTy)); 23780b9c22b61a3c99c8c0e8d898adb0f60afa76584eDavid Chisnall ClassPtrAlias->eraseFromParent(); 23795efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar ClassPtrAlias = 0; 23805efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } 23815efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar if (MetaClassPtrAlias) { 23820b9c22b61a3c99c8c0e8d898adb0f60afa76584eDavid Chisnall MetaClassPtrAlias->replaceAllUsesWith( 23833c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::ConstantExpr::getBitCast(MetaClassStruct, IdTy)); 23840b9c22b61a3c99c8c0e8d898adb0f60afa76584eDavid Chisnall MetaClassPtrAlias->eraseFromParent(); 23855efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar MetaClassPtrAlias = 0; 23865efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } 23875efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar 238820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Add class structure to list to be added to the symtab later 23893c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson ClassStruct = llvm::ConstantExpr::getBitCast(ClassStruct, PtrToInt8Ty); 239020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.push_back(ClassStruct); 239120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 239220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 2393c38e9affd4519ea199af22419c8c794973cc4b23Fariborz Jahanian 23941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumpllvm::Function *CGObjCGNU::ModuleInitFunction() { 239520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Only emit an ObjC load function if no Objective-C stuff has been called 239620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov if (Classes.empty() && Categories.empty() && ConstantStrings.empty() && 23979f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall ExistingProtocols.empty() && SelectorTable.empty()) 239820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return NULL; 23991b8956e1ce4c5770982d6e59edb16979b500677aEli Friedman 2400d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Add all referenced protocols to a category. 2401d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian GenerateProtocolHolderCategory(); 2402d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 24032acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::StructType *SelStructTy = dyn_cast<llvm::StructType>( 2404e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner SelectorTy->getElementType()); 2405ef6de3da8572607f786303c07150daa6e140ab19Jay Foad llvm::Type *SelStructPtrTy = SelectorTy; 2406e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner if (SelStructTy == 0) { 24077650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner SelStructTy = llvm::StructType::get(PtrToInt8Ty, PtrToInt8Ty, NULL); 240896e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson SelStructPtrTy = llvm::PointerType::getUnqual(SelStructTy); 2409e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner } 2410e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner 241120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 241271238f67c5df13eef19450d66b7a7ab28377192aChris Lattner llvm::Constant *Statics = NULLPtr; 241320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Generate statics list: 241471238f67c5df13eef19450d66b7a7ab28377192aChris Lattner if (ConstantStrings.size()) { 241596e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *StaticsArrayTy = llvm::ArrayType::get(PtrToInt8Ty, 241671238f67c5df13eef19450d66b7a7ab28377192aChris Lattner ConstantStrings.size() + 1); 241771238f67c5df13eef19450d66b7a7ab28377192aChris Lattner ConstantStrings.push_back(NULLPtr); 24188a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall 24194e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie StringRef StringClass = CGM.getLangOpts().ObjCConstantStringClass; 24209f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 24211b0969590e712d7d52fc9c0d43d3ab85c36d07a6Daniel Dunbar if (StringClass.empty()) StringClass = "NXConstantString"; 24229f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 24238a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall Elements.push_back(MakeConstantString(StringClass, 24248a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall ".objc_static_class_name")); 24257db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson Elements.push_back(llvm::ConstantArray::get(StaticsArrayTy, 242671238f67c5df13eef19450d66b7a7ab28377192aChris Lattner ConstantStrings)); 24271eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::StructType *StaticsListTy = 24287650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType::get(PtrToInt8Ty, StaticsArrayTy, NULL); 2429a1cf15f4680e5cf39e72e28c5ea854fcba792e84Owen Anderson llvm::Type *StaticsListPtrTy = 243096e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(StaticsListTy); 243171238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Statics = MakeGlobal(StaticsListTy, Elements, ".objc_statics"); 24321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::ArrayType *StaticsListArrayTy = 243396e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType::get(StaticsListPtrTy, 2); 243471238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Elements.clear(); 243571238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Elements.push_back(Statics); 2436c9c88b4159791c48e486ca94e3743b5979e2b7a6Owen Anderson Elements.push_back(llvm::Constant::getNullValue(StaticsListPtrTy)); 243771238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Statics = MakeGlobal(StaticsListArrayTy, Elements, ".objc_statics_ptr"); 24383c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Statics = llvm::ConstantExpr::getBitCast(Statics, PtrTy); 243971238f67c5df13eef19450d66b7a7ab28377192aChris Lattner } 244020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Array of classes, categories, and constant objects 244196e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *ClassListTy = llvm::ArrayType::get(PtrToInt8Ty, 244220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.size() + Categories.size() + 2); 24437650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *SymTabTy = llvm::StructType::get(LongTy, SelStructPtrTy, 24440032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::Type::getInt16Ty(VMContext), 24450032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::Type::getInt16Ty(VMContext), 2446630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner ClassListTy, NULL); 244720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 244820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 244920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Pointer to an array of selectors used in this module. 245020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Selectors; 24519f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall std::vector<llvm::GlobalAlias*> SelectorAliases; 24529f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall for (SelectorMap::iterator iter = SelectorTable.begin(), 24539f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall iterEnd = SelectorTable.end(); iter != iterEnd ; ++iter) { 24549f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 24559f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall std::string SelNameStr = iter->first.getAsString(); 24569f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::Constant *SelName = ExportUniqueString(SelNameStr, ".objc_sel_name"); 24579f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 24585f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVectorImpl<TypedSelector> &Types = iter->second; 24595f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner for (SmallVectorImpl<TypedSelector>::iterator i = Types.begin(), 24609f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall e = Types.end() ; i!=e ; i++) { 24619f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 24629f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::Constant *SelectorTypeEncoding = NULLPtr; 24639f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall if (!i->first.empty()) 24649f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SelectorTypeEncoding = MakeConstantString(i->first, ".objc_sel_types"); 24659f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 24669f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Elements.push_back(SelName); 24679f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Elements.push_back(SelectorTypeEncoding); 24689f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Selectors.push_back(llvm::ConstantStruct::get(SelStructTy, Elements)); 24699f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Elements.clear(); 24709f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 24719f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // Store the selector alias for later replacement 24729f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SelectorAliases.push_back(i->second); 24739f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall } 247420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 24759f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall unsigned SelectorCount = Selectors.size(); 24769f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // NULL-terminate the selector list. This should not actually be required, 24779f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // because the selector list has a length field. Unfortunately, the GCC 24789f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // runtime decides to ignore the length field and expects a NULL terminator, 24799f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // and GCC cooperates with this by always setting the length to 0. 248020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 248120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 248208e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson Selectors.push_back(llvm::ConstantStruct::get(SelStructTy, Elements)); 248320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 24849f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 248520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Number of static selectors 24869f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Elements.push_back(llvm::ConstantInt::get(LongTy, SelectorCount)); 24879f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::Constant *SelectorList = MakeGlobalArray(SelStructTy, Selectors, 248820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ".objc_selector_list"); 24891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Elements.push_back(llvm::ConstantExpr::getBitCast(SelectorList, 2490e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner SelStructPtrTy)); 249120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 249220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Now that all of the static selectors exist, create pointers to them. 24939f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall for (unsigned int i=0 ; i<SelectorCount ; i++) { 24949f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 249520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Idxs[] = {Zeros[0], 2496917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::ConstantInt::get(Int32Ty, i), Zeros[0]}; 24979f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // FIXME: We're generating redundant loads and stores here! 2498c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Constant *SelPtr = llvm::ConstantExpr::getGetElementPtr(SelectorList, 2499a5c04344fa70d6eec34344760c1fe511e16f2d76Jay Foad makeArrayRef(Idxs, 2)); 2500e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner // If selectors are defined as an opaque type, cast the pointer to this 2501e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner // type. 2502c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall SelPtr = llvm::ConstantExpr::getBitCast(SelPtr, SelectorTy); 25039f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SelectorAliases[i]->replaceAllUsesWith(SelPtr); 25049f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SelectorAliases[i]->eraseFromParent(); 250520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 25069f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 250720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Number of classes defined. 25081eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Elements.push_back(llvm::ConstantInt::get(llvm::Type::getInt16Ty(VMContext), 250920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.size())); 251020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Number of categories defined 25111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Elements.push_back(llvm::ConstantInt::get(llvm::Type::getInt16Ty(VMContext), 251220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Categories.size())); 251320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an array of classes, then categories, then static object instances 251420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.insert(Classes.end(), Categories.begin(), Categories.end()); 251520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // NULL-terminated list of static object instances (mainly constant strings) 251620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.push_back(Statics); 251720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.push_back(NULLPtr); 25187db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson llvm::Constant *ClassList = llvm::ConstantArray::get(ClassListTy, Classes); 251920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ClassList); 25201eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Construct the symbol table 252120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SymTab= MakeGlobal(SymTabTy, Elements); 252220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 252320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // The symbol table is contained in a module which has some version-checking 252420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // constants 25257650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType * ModuleTy = llvm::StructType::get(LongTy, LongTy, 2526a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall PtrToInt8Ty, llvm::PointerType::getUnqual(SymTabTy), 2527f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall (RuntimeVersion >= 10) ? IntTy : NULL, NULL); 252820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 25299f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // Runtime version, used for ABI compatibility checking. 25309f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Elements.push_back(llvm::ConstantInt::get(LongTy, RuntimeVersion)); 253191a0b51438e5259a79d68d7450c453827beed9e2Fariborz Jahanian // sizeof(ModuleTy) 253225a6a84cf5067b32c271e3ba078676dee838798dMicah Villmow llvm::DataLayout td(&TheModule); 2533e0afc892e75f526f7ecce7dd152d946337632efeKen Dyck Elements.push_back( 2534e0afc892e75f526f7ecce7dd152d946337632efeKen Dyck llvm::ConstantInt::get(LongTy, 2535e0afc892e75f526f7ecce7dd152d946337632efeKen Dyck td.getTypeSizeInBits(ModuleTy) / 2536e0afc892e75f526f7ecce7dd152d946337632efeKen Dyck CGM.getContext().getCharWidth())); 25379f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 25389f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // The path to the source file where this module was declared 25399f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SourceManager &SM = CGM.getContext().getSourceManager(); 25409f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall const FileEntry *mainFile = SM.getFileEntryForID(SM.getMainFileID()); 25419f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall std::string path = 25429f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall std::string(mainFile->getDir()->getName()) + '/' + mainFile->getName(); 25439f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Elements.push_back(MakeConstantString(path, ".objc_source_file_name")); 254420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(SymTab); 2545a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall 2546f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall if (RuntimeVersion >= 10) 25474e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie switch (CGM.getLangOpts().getGC()) { 2548f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall case LangOptions::GCOnly: 2549a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall Elements.push_back(llvm::ConstantInt::get(IntTy, 2)); 2550a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall break; 2551f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall case LangOptions::NonGC: 25524e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (CGM.getLangOpts().ObjCAutoRefCount) 2553f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall Elements.push_back(llvm::ConstantInt::get(IntTy, 1)); 2554f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall else 2555f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall Elements.push_back(llvm::ConstantInt::get(IntTy, 0)); 2556f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall break; 2557f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall case LangOptions::HybridGC: 2558f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall Elements.push_back(llvm::ConstantInt::get(IntTy, 1)); 2559f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall break; 2560f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall } 2561a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall 256220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Value *Module = MakeGlobal(ModuleTy, Elements); 256320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 256420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create the load function calling the runtime entry point with the module 256520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // structure 256620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Function * LoadFunction = llvm::Function::Create( 25670032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::FunctionType::get(llvm::Type::getVoidTy(VMContext), false), 256820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::GlobalValue::InternalLinkage, ".objc_load_function", 256920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov &TheModule); 25700032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::BasicBlock *EntryBB = 25710032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::BasicBlock::Create(VMContext, "entry", LoadFunction); 2572a1cf15f4680e5cf39e72e28c5ea854fcba792e84Owen Anderson CGBuilderTy Builder(VMContext); 257320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Builder.SetInsertPoint(EntryBB); 257426c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian 257595d318c4c10437db40ca6e15fdf32e04012da58eBenjamin Kramer llvm::FunctionType *FT = 2576da549e8995c447542d5631b8b67fcc3a9582797aJay Foad llvm::FunctionType::get(Builder.getVoidTy(), 2577da549e8995c447542d5631b8b67fcc3a9582797aJay Foad llvm::PointerType::getUnqual(ModuleTy), true); 257895d318c4c10437db40ca6e15fdf32e04012da58eBenjamin Kramer llvm::Value *Register = CGM.CreateRuntimeFunction(FT, "__objc_exec_class"); 257920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Builder.CreateCall(Register, Module); 258029254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall 2581dccaa239ec125926a9c1fb5f328bce349e41637bDavid Chisnall if (!ClassAliases.empty()) { 258229254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall llvm::Type *ArgTypes[2] = {PtrTy, PtrToInt8Ty}; 258329254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall llvm::FunctionType *RegisterAliasTy = 258429254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall llvm::FunctionType::get(Builder.getVoidTy(), 258529254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall ArgTypes, false); 258629254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall llvm::Function *RegisterAlias = llvm::Function::Create( 258729254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall RegisterAliasTy, 258829254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall llvm::GlobalValue::ExternalWeakLinkage, "class_registerAlias_np", 258929254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall &TheModule); 259029254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall llvm::BasicBlock *AliasBB = 259129254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall llvm::BasicBlock::Create(VMContext, "alias", LoadFunction); 259229254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall llvm::BasicBlock *NoAliasBB = 259329254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall llvm::BasicBlock::Create(VMContext, "no_alias", LoadFunction); 259429254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall 259529254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall // Branch based on whether the runtime provided class_registerAlias_np() 259629254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall llvm::Value *HasRegisterAlias = Builder.CreateICmpNE(RegisterAlias, 259729254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall llvm::Constant::getNullValue(RegisterAlias->getType())); 259829254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall Builder.CreateCondBr(HasRegisterAlias, AliasBB, NoAliasBB); 259929254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall 260029254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall // The true branch (has alias registration fucntion): 260129254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall Builder.SetInsertPoint(AliasBB); 260229254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall // Emit alias registration calls: 260329254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall for (std::vector<ClassAliasPair>::iterator iter = ClassAliases.begin(); 260429254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall iter != ClassAliases.end(); ++iter) { 260529254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall llvm::Constant *TheClass = 260629254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall TheModule.getGlobalVariable(("_OBJC_CLASS_" + iter->first).c_str(), 260729254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall true); 260829254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall if (0 != TheClass) { 260929254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall TheClass = llvm::ConstantExpr::getBitCast(TheClass, PtrTy); 261029254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall Builder.CreateCall2(RegisterAlias, TheClass, 261129254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall MakeConstantString(iter->second)); 261229254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall } 261329254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall } 261429254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall // Jump to end: 261529254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall Builder.CreateBr(NoAliasBB); 261629254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall 261729254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall // Missing alias registration function, just return from the function: 261829254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall Builder.SetInsertPoint(NoAliasBB); 261929254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall } 262020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Builder.CreateRetVoid(); 26219cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian 262220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return LoadFunction; 262320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 26247ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 2625679a502d462ef819e6175b58e255ca3f3391e7cfFariborz Jahanianllvm::Function *CGObjCGNU::GenerateMethod(const ObjCMethodDecl *OMD, 26261eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const ObjCContainerDecl *CD) { 26271eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const ObjCCategoryImplDecl *OCD = 26283e0a540b6d846178857289ec0eb8470a278d11a3Steve Naroff dyn_cast<ObjCCategoryImplDecl>(OMD->getDeclContext()); 26295f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef CategoryName = OCD ? OCD->getName() : ""; 26305f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef ClassName = CD->getName(); 26319f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Selector MethodName = OMD->getSelector(); 2632f8d49f64ef6ab7e632717a31631fc289aab69428Douglas Gregor bool isClassMethod = !OMD->isInstanceMethod(); 2633391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner 2634541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel Dunbar CodeGenTypes &Types = CGM.getTypes(); 26352acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::FunctionType *MethodTy = 2636de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall Types.GetFunctionType(Types.arrangeObjCMethodDeclaration(OMD)); 263720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::string FunctionName = SymbolNameForMethod(ClassName, CategoryName, 263820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov MethodName, isClassMethod); 263920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 2640d6c93d703541c992e06eb9a59a2d826a30da65b2Daniel Dunbar llvm::Function *Method 26411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump = llvm::Function::Create(MethodTy, 26421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::GlobalValue::InternalLinkage, 26431eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump FunctionName, 26441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump &TheModule); 2645391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner return Method; 2646391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner} 2647391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner 2648789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnallllvm::Constant *CGObjCGNU::GetPropertyGetFunction() { 26499f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall return GetPropertyFn; 265049f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar} 265149f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar 2652789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnallllvm::Constant *CGObjCGNU::GetPropertySetFunction() { 26539f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall return SetPropertyFn; 265449f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar} 265549f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar 2656ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenekllvm::Constant *CGObjCGNU::GetOptimizedPropertySetFunction(bool atomic, 2657ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek bool copy) { 2658ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return 0; 2659ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek} 2660ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 2661789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnallllvm::Constant *CGObjCGNU::GetGetStructFunction() { 26629f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall return GetStructPropertyFn; 26638fac25d33b13e25f512dd921d4d5a4b565f5d175David Chisnall} 2664789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnallllvm::Constant *CGObjCGNU::GetSetStructFunction() { 26659f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall return SetStructPropertyFn; 26666cc590602f41c3e98e8af0023d54296c8eca7910Fariborz Jahanian} 2667d397cfef01d49a41554309d67ea26340c39e1e94David Chisnallllvm::Constant *CGObjCGNU::GetCppAtomicObjectGetFunction() { 2668d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall return 0; 2669d397cfef01d49a41554309d67ea26340c39e1e94David Chisnall} 2670d397cfef01d49a41554309d67ea26340c39e1e94David Chisnallllvm::Constant *CGObjCGNU::GetCppAtomicObjectSetFunction() { 2671e3173021fa3bfdf7e6759d67838e385a83b2d57eFariborz Jahanian return 0; 2672e3173021fa3bfdf7e6759d67838e385a83b2d57eFariborz Jahanian} 26736cc590602f41c3e98e8af0023d54296c8eca7910Fariborz Jahanian 2674309a4368cd299cff30ab22709e2b772cf8059e45Daniel Dunbarllvm::Constant *CGObjCGNU::EnumerationMutationFunction() { 26759f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall return EnumerationMutationFn; 26762abd89c039e835e84519a4cd8a7495899a70153dAnders Carlsson} 26772abd89c039e835e84519a4cd8a7495899a70153dAnders Carlsson 26789f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallvoid CGObjCGNU::EmitSynchronizedStmt(CodeGenFunction &CGF, 2679f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall const ObjCAtSynchronizedStmt &S) { 26809735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall EmitAtSynchronizedStmt(CGF, S, SyncEnterFn, SyncExitFn); 2681f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall} 26825dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 26835dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 26849f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallvoid CGObjCGNU::EmitTryStmt(CodeGenFunction &CGF, 2685f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall const ObjCAtTryStmt &S) { 2686f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // Unlike the Apple non-fragile runtimes, which also uses 2687f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // unwind-based zero cost exceptions, the GNU Objective C runtime's 2688f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // EH support isn't a veneer over C++ EH. Instead, exception 2689c686004145b1f4dbeb38173a0886ba7040ae0089David Chisnall // objects are created by objc_exception_throw and destroyed by 2690f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // the personality function; this avoids the need for bracketing 2691f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // catch handlers with calls to __blah_begin_catch/__blah_end_catch 2692f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // (or even _Unwind_DeleteException), but probably doesn't 2693f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // interoperate very well with foreign exceptions. 26949735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // 269580558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall // In Objective-C++ mode, we actually emit something equivalent to the C++ 26969735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // exception handler. 26979735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall EmitTryCatchStmt(CGF, S, EnterCatchFn, ExitCatchFn, ExceptionReThrowFn); 26989735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall return ; 269964d5d6c5903157c521af496479d06dc26032d718Anders Carlsson} 270064d5d6c5903157c521af496479d06dc26032d718Anders Carlsson 27019f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallvoid CGObjCGNU::EmitThrowStmt(CodeGenFunction &CGF, 27026a3c70ec59804347c99e96aa13934f63f4fed573Fariborz Jahanian const ObjCAtThrowStmt &S, 27036a3c70ec59804347c99e96aa13934f63f4fed573Fariborz Jahanian bool ClearInsertionPoint) { 27045dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Value *ExceptionAsObject; 27055dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 27065dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (const Expr *ThrowExpr = S.getThrowExpr()) { 27072b014d6c0c6b8ac94b416ac37dfc7931f20777a7John McCall llvm::Value *Exception = CGF.EmitObjCThrowOperand(ThrowExpr); 27081e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian ExceptionAsObject = Exception; 27095dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } else { 27101eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump assert((!CGF.ObjCEHValueStack.empty() && CGF.ObjCEHValueStack.back()) && 27115dc0867af17b3bd6f567897433853b2b4767446cChris Lattner "Unexpected rethrow outside @catch block."); 27125dc0867af17b3bd6f567897433853b2b4767446cChris Lattner ExceptionAsObject = CGF.ObjCEHValueStack.back(); 27135dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 2714578faa837b552403e2002b97fdfbfde14f2448e5Benjamin Kramer ExceptionAsObject = CGF.Builder.CreateBitCast(ExceptionAsObject, IdTy); 2715c686004145b1f4dbeb38173a0886ba7040ae0089David Chisnall llvm::CallSite Throw = 2716bd7370a78604e9a20d698bfe328c1e43f12a0613John McCall CGF.EmitRuntimeCallOrInvoke(ExceptionThrowFn, ExceptionAsObject); 2717c686004145b1f4dbeb38173a0886ba7040ae0089David Chisnall Throw.setDoesNotReturn(); 2718c972c92f757957bf414c6195b1f2ae25a2b4dd37Eli Friedman CGF.Builder.CreateUnreachable(); 27196a3c70ec59804347c99e96aa13934f63f4fed573Fariborz Jahanian if (ClearInsertionPoint) 27206a3c70ec59804347c99e96aa13934f63f4fed573Fariborz Jahanian CGF.Builder.ClearInsertionPoint(); 272164d5d6c5903157c521af496479d06dc26032d718Anders Carlsson} 272264d5d6c5903157c521af496479d06dc26032d718Anders Carlsson 27239f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallllvm::Value * CGObjCGNU::EmitObjCWeakRead(CodeGenFunction &CGF, 27241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *AddrWeakObj) { 2725bd7370a78604e9a20d698bfe328c1e43f12a0613John McCall CGBuilderTy &B = CGF.Builder; 272631fc0c1a16dabd397dd3323fb0dbe7052b87abd0David Chisnall AddrWeakObj = EnforceType(B, AddrWeakObj, PtrToIdTy); 2727ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall return B.CreateCall(WeakReadFn, AddrWeakObj); 27286dc2317b59cb1180a59f6c283d96b7a5dfeb5307Fariborz Jahanian} 27296dc2317b59cb1180a59f6c283d96b7a5dfeb5307Fariborz Jahanian 27309f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallvoid CGObjCGNU::EmitObjCWeakAssign(CodeGenFunction &CGF, 27311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *src, llvm::Value *dst) { 2732bd7370a78604e9a20d698bfe328c1e43f12a0613John McCall CGBuilderTy &B = CGF.Builder; 2733ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall src = EnforceType(B, src, IdTy); 2734ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall dst = EnforceType(B, dst, PtrToIdTy); 2735ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall B.CreateCall2(WeakAssignFn, src, dst); 27363e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian} 27373e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian 27389f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallvoid CGObjCGNU::EmitObjCGlobalAssign(CodeGenFunction &CGF, 2739021a7a63984f0f912dc9e9dae2a1b3e1509a40ceFariborz Jahanian llvm::Value *src, llvm::Value *dst, 2740021a7a63984f0f912dc9e9dae2a1b3e1509a40ceFariborz Jahanian bool threadlocal) { 2741bd7370a78604e9a20d698bfe328c1e43f12a0613John McCall CGBuilderTy &B = CGF.Builder; 2742ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall src = EnforceType(B, src, IdTy); 2743ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall dst = EnforceType(B, dst, PtrToIdTy); 2744021a7a63984f0f912dc9e9dae2a1b3e1509a40ceFariborz Jahanian if (!threadlocal) 2745021a7a63984f0f912dc9e9dae2a1b3e1509a40ceFariborz Jahanian B.CreateCall2(GlobalAssignFn, src, dst); 2746021a7a63984f0f912dc9e9dae2a1b3e1509a40ceFariborz Jahanian else 2747021a7a63984f0f912dc9e9dae2a1b3e1509a40ceFariborz Jahanian // FIXME. Add threadloca assign API 2748b219cfc4d75f0a03630b7c4509ef791b7e97b2c8David Blaikie llvm_unreachable("EmitObjCGlobalAssign - Threal Local API NYI"); 274958626500527695865683d1d65053743de8770b60Fariborz Jahanian} 275058626500527695865683d1d65053743de8770b60Fariborz Jahanian 27519f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallvoid CGObjCGNU::EmitObjCIvarAssign(CodeGenFunction &CGF, 27526c7a1f364796ce1acb988714e9e42076d1ce332eFariborz Jahanian llvm::Value *src, llvm::Value *dst, 27536c7a1f364796ce1acb988714e9e42076d1ce332eFariborz Jahanian llvm::Value *ivarOffset) { 2754bd7370a78604e9a20d698bfe328c1e43f12a0613John McCall CGBuilderTy &B = CGF.Builder; 2755ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall src = EnforceType(B, src, IdTy); 2756b44eda31a214ad88616acbe28c3f0a70268adc6cDavid Chisnall dst = EnforceType(B, dst, IdTy); 2757ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall B.CreateCall3(IvarAssignFn, src, dst, ivarOffset); 27587eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanian} 27597eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanian 27609f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallvoid CGObjCGNU::EmitObjCStrongCastAssign(CodeGenFunction &CGF, 27611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *src, llvm::Value *dst) { 2762bd7370a78604e9a20d698bfe328c1e43f12a0613John McCall CGBuilderTy &B = CGF.Builder; 2763ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall src = EnforceType(B, src, IdTy); 2764ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall dst = EnforceType(B, dst, PtrToIdTy); 2765ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall B.CreateCall2(StrongCastAssignFn, src, dst); 276658626500527695865683d1d65053743de8770b60Fariborz Jahanian} 276758626500527695865683d1d65053743de8770b60Fariborz Jahanian 27689f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallvoid CGObjCGNU::EmitGCMemmoveCollectable(CodeGenFunction &CGF, 27691eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *DestPtr, 2770082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian llvm::Value *SrcPtr, 277155bcace250e1ff366e4482714b344b8cbc8be5f3Fariborz Jahanian llvm::Value *Size) { 2772bd7370a78604e9a20d698bfe328c1e43f12a0613John McCall CGBuilderTy &B = CGF.Builder; 277368e5e1331d99140ae5dd7b27c3dd28618827dfc8David Chisnall DestPtr = EnforceType(B, DestPtr, PtrTy); 277468e5e1331d99140ae5dd7b27c3dd28618827dfc8David Chisnall SrcPtr = EnforceType(B, SrcPtr, PtrTy); 2775ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall 277655bcace250e1ff366e4482714b344b8cbc8be5f3Fariborz Jahanian B.CreateCall3(MemMoveFn, DestPtr, SrcPtr, Size); 2777082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian} 2778082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian 27799cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanianllvm::GlobalVariable *CGObjCGNU::ObjCIvarOffsetVariable( 27809cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCInterfaceDecl *ID, 27819cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCIvarDecl *Ivar) { 27829cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const std::string Name = "__objc_ivar_offset_" + ID->getNameAsString() 27839cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian + '.' + Ivar->getNameAsString(); 27849cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // Emit the variable and initialize it with what we think the correct value 27859cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // is. This allows code compiled with non-fragile ivars to work correctly 27869cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // when linked against code which isn't (most of the time). 27878a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::GlobalVariable *IvarOffsetPointer = TheModule.getNamedGlobal(Name); 27888a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall if (!IvarOffsetPointer) { 2789e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // This will cause a run-time crash if we accidentally use it. A value of 2790e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // 0 would seem more sensible, but will silently overwrite the isa pointer 2791e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // causing a great deal of confusion. 2792e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall uint64_t Offset = -1; 2793e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // We can't call ComputeIvarBaseOffset() here if we have the 2794e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // implementation, because it will create an invalid ASTRecordLayout object 2795e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // that we are then stuck with forever, so we only initialize the ivar 2796e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // offset variable with a guess if we only have the interface. The 2797e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // initializer will be reset later anyway, when we are generating the class 2798e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // description. 2799e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall if (!CGM.getContext().getObjCImplementation( 2800cb421fa690da545b58a720abe5f1c49b166dbde7Dan Gohman const_cast<ObjCInterfaceDecl *>(ID))) 2801e5b4666d9b86ea30b90b599691e75d380f84ddd6Eli Friedman Offset = ComputeIvarBaseOffset(CGM, ID, Ivar); 2802d901da531433254210a08e8b1f9e1ad049b340aaDavid Chisnall 280349de5289acea91c9d224c9aadd4d527e8f9fdaffDavid Chisnall llvm::ConstantInt *OffsetGuess = llvm::ConstantInt::get(Int32Ty, Offset, 2804243f108a7c5dc4733e9ef6b7b7c2cd0465cf2104Richard Trieu /*isSigned*/true); 28058a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // Don't emit the guess in non-PIC code because the linker will not be able 28068a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // to replace it with the real version for a library. In non-PIC code you 28078a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // must compile with the fragile ABI if you want to use ivars from a 28081eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // GCC-compiled class. 28095e219cf7f896873c1c1e64b9e87a7dade99debbaChandler Carruth if (CGM.getLangOpts().PICLevel || CGM.getLangOpts().PIELevel) { 28108a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::GlobalVariable *IvarOffsetGV = new llvm::GlobalVariable(TheModule, 2811917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall Int32Ty, false, 28128a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::GlobalValue::PrivateLinkage, OffsetGuess, Name+".guess"); 28138a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall IvarOffsetPointer = new llvm::GlobalVariable(TheModule, 28148a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall IvarOffsetGV->getType(), false, llvm::GlobalValue::LinkOnceAnyLinkage, 28158a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall IvarOffsetGV, Name); 28168a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall } else { 28178a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall IvarOffsetPointer = new llvm::GlobalVariable(TheModule, 28183c0ef8cc0dc246bd3083e8cdd63005e8873d36d2Benjamin Kramer llvm::Type::getInt32PtrTy(VMContext), false, 28193c0ef8cc0dc246bd3083e8cdd63005e8873d36d2Benjamin Kramer llvm::GlobalValue::ExternalLinkage, 0, Name); 28208a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall } 28219cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 28228a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall return IvarOffsetPointer; 28239cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian} 28249cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian 28259f6614e3c5d34998dd5a5cc6faf0746dcd611d49David ChisnallLValue CGObjCGNU::EmitObjCValueForIvar(CodeGenFunction &CGF, 2826598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian QualType ObjectTy, 2827598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian llvm::Value *BaseValue, 2828598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian const ObjCIvarDecl *Ivar, 2829598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian unsigned CVRQualifiers) { 2830c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall const ObjCInterfaceDecl *ID = 2831c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall ObjectTy->getAs<ObjCObjectType>()->getInterface(); 28329777687562c338601c2f17906e65e1c1a0aad96fDaniel Dunbar return EmitValueForIvarAtOffset(CGF, ID, BaseValue, Ivar, CVRQualifiers, 28339777687562c338601c2f17906e65e1c1a0aad96fDaniel Dunbar EmitIvarOffset(CGF, ID, Ivar)); 28340bb20361a321593887f067515dd04cf109f4c74aFariborz Jahanian} 2835bb1c8600218b3244340331165fc7cba7bf227655Mike Stump 28369cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanianstatic const ObjCInterfaceDecl *FindIvarInterface(ASTContext &Context, 28379cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCInterfaceDecl *OID, 28389cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCIvarDecl *OIVD) { 2839db8264e4c5ffd7af6fbad4ca4306bd382bb02691Jordy Rose for (const ObjCIvarDecl *next = OID->all_declared_ivar_begin(); next; 2840db8264e4c5ffd7af6fbad4ca4306bd382bb02691Jordy Rose next = next->getNextIvar()) { 2841db8264e4c5ffd7af6fbad4ca4306bd382bb02691Jordy Rose if (OIVD == next) 28429cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian return OID; 28439cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 28441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 28459cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // Otherwise check in the super class. 28469cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian if (const ObjCInterfaceDecl *Super = OID->getSuperClass()) 28479cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian return FindIvarInterface(Context, Super, OIVD); 28481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 28499cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian return 0; 28509cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian} 28510bb20361a321593887f067515dd04cf109f4c74aFariborz Jahanian 28529f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallllvm::Value *CGObjCGNU::EmitIvarOffset(CodeGenFunction &CGF, 28532a03192a02dbf4fdff438d1e658356bde871aba4Daniel Dunbar const ObjCInterfaceDecl *Interface, 2854f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian const ObjCIvarDecl *Ivar) { 2855260611a32535c851237926bfcf78869b13c07d5bJohn McCall if (CGM.getLangOpts().ObjCRuntime.isNonFragile()) { 28569cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian Interface = FindIvarInterface(CGM.getContext(), Interface, Ivar); 285763ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall if (RuntimeVersion < 10) 285863ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall return CGF.Builder.CreateZExtOrBitCast( 285963ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall CGF.Builder.CreateLoad(CGF.Builder.CreateLoad( 286063ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall ObjCIvarOffsetVariable(Interface, Ivar), false, "ivar")), 286163ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall PtrDiffTy); 286263ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall std::string name = "__objc_ivar_offset_value_" + 286363ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall Interface->getNameAsString() +"." + Ivar->getNameAsString(); 286463ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall llvm::Value *Offset = TheModule.getGlobalVariable(name); 286563ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall if (!Offset) 286663ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall Offset = new llvm::GlobalVariable(TheModule, IntTy, 28673fc81d32314eca98b51846f493a8bc77cf14a701David Chisnall false, llvm::GlobalValue::LinkOnceAnyLinkage, 28683fc81d32314eca98b51846f493a8bc77cf14a701David Chisnall llvm::Constant::getNullValue(IntTy), name); 28696614845b4f6724da8c6aca14ea720dbd157883a7David Chisnall Offset = CGF.Builder.CreateLoad(Offset); 28706614845b4f6724da8c6aca14ea720dbd157883a7David Chisnall if (Offset->getType() != PtrDiffTy) 28716614845b4f6724da8c6aca14ea720dbd157883a7David Chisnall Offset = CGF.Builder.CreateZExtOrBitCast(Offset, PtrDiffTy); 28726614845b4f6724da8c6aca14ea720dbd157883a7David Chisnall return Offset; 28739cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 2874e5b4666d9b86ea30b90b599691e75d380f84ddd6Eli Friedman uint64_t Offset = ComputeIvarBaseOffset(CGF.CGM, Interface, Ivar); 2875e5b4666d9b86ea30b90b599691e75d380f84ddd6Eli Friedman return llvm::ConstantInt::get(PtrDiffTy, Offset, /*isSigned*/true); 2876f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian} 2877f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian 28789f6614e3c5d34998dd5a5cc6faf0746dcd611d49David ChisnallCGObjCRuntime * 28799f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallclang::CodeGen::CreateGNUObjCRuntime(CodeGenModule &CGM) { 2880260611a32535c851237926bfcf78869b13c07d5bJohn McCall switch (CGM.getLangOpts().ObjCRuntime.getKind()) { 288111d3f4cc27e6b923fc32481dc1bb5ec46c7d1f4bDavid Chisnall case ObjCRuntime::GNUstep: 28829f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall return new CGObjCGNUstep(CGM); 2883260611a32535c851237926bfcf78869b13c07d5bJohn McCall 288411d3f4cc27e6b923fc32481dc1bb5ec46c7d1f4bDavid Chisnall case ObjCRuntime::GCC: 2885260611a32535c851237926bfcf78869b13c07d5bJohn McCall return new CGObjCGCC(CGM); 2886260611a32535c851237926bfcf78869b13c07d5bJohn McCall 2887f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall case ObjCRuntime::ObjFW: 2888f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall return new CGObjCObjFW(CGM); 2889f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall 2890260611a32535c851237926bfcf78869b13c07d5bJohn McCall case ObjCRuntime::FragileMacOSX: 2891260611a32535c851237926bfcf78869b13c07d5bJohn McCall case ObjCRuntime::MacOSX: 2892260611a32535c851237926bfcf78869b13c07d5bJohn McCall case ObjCRuntime::iOS: 2893260611a32535c851237926bfcf78869b13c07d5bJohn McCall llvm_unreachable("these runtimes are not GNU runtimes"); 2894260611a32535c851237926bfcf78869b13c07d5bJohn McCall } 2895260611a32535c851237926bfcf78869b13c07d5bJohn McCall llvm_unreachable("bad runtime"); 28960f984268b05edab2cc555a427c441baa9c252658Chris Lattner} 2897