CGObjCGNU.cpp revision 0a7dd788dbef975f35f273c7ab913f480f7edd60
120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov//===------- CGObjCGNU.cpp - Emit LLVM Code from ASTs for a Module --------===// 20f984268b05edab2cc555a427c441baa9c252658Chris Lattner// 30f984268b05edab2cc555a427c441baa9c252658Chris Lattner// The LLVM Compiler Infrastructure 40f984268b05edab2cc555a427c441baa9c252658Chris Lattner// 50f984268b05edab2cc555a427c441baa9c252658Chris Lattner// This file is distributed under the University of Illinois Open Source 60f984268b05edab2cc555a427c441baa9c252658Chris Lattner// License. See LICENSE.TXT for details. 70f984268b05edab2cc555a427c441baa9c252658Chris Lattner// 80f984268b05edab2cc555a427c441baa9c252658Chris Lattner//===----------------------------------------------------------------------===// 90f984268b05edab2cc555a427c441baa9c252658Chris Lattner// 10fc8f0e14ad142ed811e90fbd9a30e419e301c717Chris Lattner// This provides Objective-C code generation targeting the GNU runtime. The 1120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// class in this file generates structures used by the GNU Objective-C runtime 1220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// library. These structures are defined in objc/objc.h and objc/objc-api.h in 1320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// the GNU runtime distribution. 140f984268b05edab2cc555a427c441baa9c252658Chris Lattner// 150f984268b05edab2cc555a427c441baa9c252658Chris Lattner//===----------------------------------------------------------------------===// 160f984268b05edab2cc555a427c441baa9c252658Chris Lattner 170f984268b05edab2cc555a427c441baa9c252658Chris Lattner#include "CGObjCRuntime.h" 18dce1406f1c1f572cfd61c494546572d63461c741Chris Lattner#include "CodeGenModule.h" 198f2926b73ed635afecd020da787af6a837601a2bDaniel Dunbar#include "CodeGenFunction.h" 2036f893c1efe367f929d92c8b125f964c22ba189eJohn McCall#include "CGCleanup.h" 21dce1406f1c1f572cfd61c494546572d63461c741Chris Lattner#include "clang/AST/ASTContext.h" 22e91593ef084479340582b2ba177b44be50a717b7Daniel Dunbar#include "clang/AST/Decl.h" 23af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar#include "clang/AST/DeclObjC.h" 2419cc4abea06a9b49e0e16a50d335c064cd723572Anders Carlsson#include "clang/AST/RecordLayout.h" 2516f0049415ec596504891259e2a83e19871c0d52Chris Lattner#include "clang/AST/StmtObjC.h" 269f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall#include "clang/Basic/SourceManager.h" 279f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall#include "clang/Basic/FileManager.h" 285dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 295dc0867af17b3bd6f567897433853b2b4767446cChris Lattner#include "llvm/Intrinsics.h" 300f984268b05edab2cc555a427c441baa9c252658Chris Lattner#include "llvm/Module.h" 31c6cd5fd3eae71f8841504a396563343cfaaf503eDavid Chisnall#include "llvm/LLVMContext.h" 320f984268b05edab2cc555a427c441baa9c252658Chris Lattner#include "llvm/ADT/SmallVector.h" 3320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov#include "llvm/ADT/StringMap.h" 3480558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall#include "llvm/Support/CallSite.h" 357ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar#include "llvm/Support/Compiler.h" 367ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar#include "llvm/Target/TargetData.h" 375dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 385f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner#include <cstdarg> 39e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner 40e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner 41dce1406f1c1f572cfd61c494546572d63461c741Chris Lattnerusing namespace clang; 4246f45b9bec4a265ad8400a538e5ec3a5683617f1Daniel Dunbarusing namespace CodeGen; 4320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 440f984268b05edab2cc555a427c441baa9c252658Chris Lattner 450f984268b05edab2cc555a427c441baa9c252658Chris Lattnernamespace { 4681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// Class that lazily initialises the runtime function. Avoids inserting the 4781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// types and the function declaration into a module if they're not used, and 4881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// avoids constructing the type more than once if it's used more than once. 499f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallclass LazyRuntimeFunction { 509f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall CodeGenModule *CGM; 519cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner std::vector<llvm::Type*> ArgTys; 529f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall const char *FunctionName; 53789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnall llvm::Constant *Function; 549f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall public: 5581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Constructor leaves this class uninitialized, because it is intended to 5681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// be used as a field in another class and not all of the types that are 5781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// used as arguments will necessarily be available at construction time. 589f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction() : CGM(0), FunctionName(0), Function(0) {} 599f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 6081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Initialises the lazy function with the name, return type, and the types 6181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// of the arguments. 629f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall END_WITH_NULL 639f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall void init(CodeGenModule *Mod, const char *name, 649cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::Type *RetTy, ...) { 659f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall CGM =Mod; 669f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall FunctionName = name; 679f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Function = 0; 689735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall ArgTys.clear(); 699f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall va_list Args; 709f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall va_start(Args, RetTy); 719cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner while (llvm::Type *ArgTy = va_arg(Args, llvm::Type*)) 729f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall ArgTys.push_back(ArgTy); 739f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall va_end(Args); 749f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // Push the return type on at the end so we can pop it off easily 759f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall ArgTys.push_back(RetTy); 769f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall } 7781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Overloaded cast operator, allows the class to be implicitly cast to an 7881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM constant. 79789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnall operator llvm::Constant*() { 809f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall if (!Function) { 819735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall if (0 == FunctionName) return 0; 829735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // We put the return type on the end of the vector, so pop it back off 832acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Type *RetTy = ArgTys.back(); 849f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall ArgTys.pop_back(); 859f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::FunctionType *FTy = llvm::FunctionType::get(RetTy, ArgTys, false); 869f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Function = 87789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnall cast<llvm::Constant>(CGM->CreateRuntimeFunction(FTy, FunctionName)); 889735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // We won't need to use the types again, so we may as well clean up the 899735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // vector now 909f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall ArgTys.resize(0); 919f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall } 929f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall return Function; 939f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall } 94789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnall operator llvm::Function*() { 955f0bcc4c3f4a75375a3571e71bffebf603f4ca67David Chisnall return cast<llvm::Function>((llvm::Constant*)*this); 96789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnall } 975f0bcc4c3f4a75375a3571e71bffebf603f4ca67David Chisnall 989f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall}; 999f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 1009f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 10181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// GNU Objective-C runtime code generation. This class implements the parts of 102f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall/// Objective-C support that are specific to the GNU family of runtimes (GCC, 103f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall/// GNUstep and ObjFW). 1049f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallclass CGObjCGNU : public CGObjCRuntime { 105c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnallprotected: 10681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// The LLVM module into which output is inserted 1070f984268b05edab2cc555a427c441baa9c252658Chris Lattner llvm::Module &TheModule; 10881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// strut objc_super. Used for sending messages to super. This structure 10981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// contains the receiver (object) and the expected class. 1102acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::StructType *ObjCSuperTy; 11181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// struct objc_super*. The type of the argument to the superclass message 11281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// lookup functions. 1132acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::PointerType *PtrToObjCSuperTy; 11481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM type for selectors. Opaque pointer (i8*) unless a header declaring 11581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// SEL is included in a header somewhere, in which case it will be whatever 11681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// type is declared in that header, most likely {i8*, i8*}. 1179cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::PointerType *SelectorTy; 11881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM i8 type. Cached here to avoid repeatedly getting it in all of the 11981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// places where it's used 1202acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::IntegerType *Int8Ty; 12181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Pointer to i8 - LLVM type of char*, for all of the places where the 12281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// runtime needs to deal with C strings. 1239cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::PointerType *PtrToInt8Ty; 12481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Instance Method Pointer type. This is a pointer to a function that takes, 12581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// at a minimum, an object and a selector, and is the generic type for 12681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Objective-C methods. Due to differences between variadic / non-variadic 12781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// calling conventions, it must always be cast to the correct type before 12881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// actually being used. 1299cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::PointerType *IMPTy; 13081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Type of an untyped Objective-C object. Clang treats id as a built-in type 13181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// when compiling Objective-C code, so this may be an opaque pointer (i8*), 13281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// but if the runtime header declaring it is included then it may be a 13381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// pointer to a structure. 1349cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::PointerType *IdTy; 13581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Pointer to a pointer to an Objective-C object. Used in the new ABI 13681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// message lookup function and some GC-related functions. 1372acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::PointerType *PtrToIdTy; 13881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// The clang type of id. Used when using the clang CGCall infrastructure to 13981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// call Objective-C methods. 140ead608af31b6c9abeae1ca6d0b75094dac4641c0John McCall CanQualType ASTIdTy; 14181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM type for C int type. 1429cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::IntegerType *IntTy; 14381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM type for an opaque pointer. This is identical to PtrToInt8Ty, but is 14481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// used in the code to document the difference between i8* meaning a pointer 14581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// to a C string and i8* meaning a pointer to some opaque type. 1469cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::PointerType *PtrTy; 14781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM type for C long type. The runtime uses this in a lot of places where 14881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// it should be using intptr_t, but we can't fix this without breaking 14981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// compatibility with GCC... 150ef6de3da8572607f786303c07150daa6e140ab19Jay Foad llvm::IntegerType *LongTy; 15181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM type for C size_t. Used in various runtime data structures. 1522acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::IntegerType *SizeTy; 15349de5289acea91c9d224c9aadd4d527e8f9fdaffDavid Chisnall /// LLVM type for C intptr_t. 15449de5289acea91c9d224c9aadd4d527e8f9fdaffDavid Chisnall llvm::IntegerType *IntPtrTy; 15581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM type for C ptrdiff_t. Mainly used in property accessor functions. 1562acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::IntegerType *PtrDiffTy; 15781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM type for C int*. Used for GCC-ABI-compatible non-fragile instance 15881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// variables. 1592acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::PointerType *PtrToIntTy; 16081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM type for Objective-C BOOL type. 1612acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Type *BoolTy; 162917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// 32-bit integer type, to save us needing to look it up every time it's used. 163917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::IntegerType *Int32Ty; 164917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// 64-bit integer type, to save us needing to look it up every time it's used. 165917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::IntegerType *Int64Ty; 16681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Metadata kind used to tie method lookups to message sends. The GNUstep 16781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// runtime provides some LLVM passes that can use this to do things like 16881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// automatic IMP caching and speculative inlining. 169c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall unsigned msgSendMDKind; 17081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Helper function that generates a constant string and returns a pointer to 17181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// the start of the string. The result of this function can be used anywhere 17281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// where the C code specifies const char*. 1739735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::Constant *MakeConstantString(const std::string &Str, 1749735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall const std::string &Name="") { 1759735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::Constant *ConstStr = CGM.GetAddrOfConstantCString(Str, Name.c_str()); 176a5c04344fa70d6eec34344760c1fe511e16f2d76Jay Foad return llvm::ConstantExpr::getGetElementPtr(ConstStr, Zeros); 1779735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall } 17881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Emits a linkonce_odr string, whose name is the prefix followed by the 17981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// string value. This allows the linker to combine the strings between 18081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// different modules. Used for EH typeinfo names, selector strings, and a 18181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// few other things. 1829735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::Constant *ExportUniqueString(const std::string &Str, 1839735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall const std::string prefix) { 1849735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall std::string name = prefix + Str; 1859735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::Constant *ConstStr = TheModule.getGlobalVariable(name); 1869735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall if (!ConstStr) { 18794010695f7fce626e41ef045b60def9c912e9ce8Chris Lattner llvm::Constant *value = llvm::ConstantDataArray::getString(VMContext,Str); 1889735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall ConstStr = new llvm::GlobalVariable(TheModule, value->getType(), true, 1899735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::GlobalValue::LinkOnceODRLinkage, value, prefix + Str); 1909735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall } 191a5c04344fa70d6eec34344760c1fe511e16f2d76Jay Foad return llvm::ConstantExpr::getGetElementPtr(ConstStr, Zeros); 1929735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall } 19381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Generates a global structure, initialized by the elements in the vector. 19481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// The element types must match the types of the structure elements in the 19581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// first argument. 1962acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::GlobalVariable *MakeGlobal(llvm::StructType *Ty, 197917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::ArrayRef<llvm::Constant*> V, 1985f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef Name="", 1999735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::GlobalValue::LinkageTypes linkage 2009735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall =llvm::GlobalValue::InternalLinkage) { 2019735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::Constant *C = llvm::ConstantStruct::get(Ty, V); 2029735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall return new llvm::GlobalVariable(TheModule, Ty, false, 2039735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall linkage, C, Name); 2049735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall } 20581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Generates a global array. The vector must contain the same number of 20681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// elements that the array type declares, of the type specified as the array 20781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// element type. 2082acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::GlobalVariable *MakeGlobal(llvm::ArrayType *Ty, 209917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::ArrayRef<llvm::Constant*> V, 2105f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef Name="", 2119735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::GlobalValue::LinkageTypes linkage 2129735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall =llvm::GlobalValue::InternalLinkage) { 2139735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::Constant *C = llvm::ConstantArray::get(Ty, V); 2149735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall return new llvm::GlobalVariable(TheModule, Ty, false, 2159735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall linkage, C, Name); 2169735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall } 21781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Generates a global array, inferring the array type from the specified 21881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// element type and the size of the initialiser. 2192acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::GlobalVariable *MakeGlobalArray(llvm::Type *Ty, 220917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::ArrayRef<llvm::Constant*> V, 2215f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef Name="", 2229735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::GlobalValue::LinkageTypes linkage 2239735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall =llvm::GlobalValue::InternalLinkage) { 2249735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::ArrayType *ArrayTy = llvm::ArrayType::get(Ty, V.size()); 2259735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall return MakeGlobal(ArrayTy, V, Name, linkage); 2269735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall } 22781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Ensures that the value has the required type, by inserting a bitcast if 22881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// required. This function lets us avoid inserting bitcasts that are 22981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// redundant. 2302acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Value* EnforceType(CGBuilderTy B, llvm::Value *V, llvm::Type *Ty){ 231c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall if (V->getType() == Ty) return V; 232c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall return B.CreateBitCast(V, Ty); 233c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } 234c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // Some zeros used for GEPs in lots of places. 235c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Constant *Zeros[2]; 23681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Null pointer value. Mainly used as a terminator in various arrays. 237c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Constant *NULLPtr; 23881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM context. 239c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::LLVMContext &VMContext; 240c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnallprivate: 24181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Placeholder for the class. Lots of things refer to the class before we've 24281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// actually emitted it. We use this alias as a placeholder, and then replace 24381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// it with a pointer to the class structure before finally emitting the 24481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// module. 2455efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar llvm::GlobalAlias *ClassPtrAlias; 24681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Placeholder for the metaclass. Lots of things refer to the class before 24781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// we've / actually emitted it. We use this alias as a placeholder, and then 24881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// replace / it with a pointer to the metaclass structure before finally 24981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// emitting the / module. 2505efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar llvm::GlobalAlias *MetaClassPtrAlias; 25181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// All of the classes that have been generated for this compilation units. 25220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Classes; 25381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// All of the categories that have been generated for this compilation units. 25420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Categories; 25581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// All of the Objective-C constant strings that have been generated for this 25681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// compilation units. 25720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> ConstantStrings; 25881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Map from string values to Objective-C constant strings in the output. 25981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Used to prevent emitting Objective-C strings more than once. This should 26081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// not be required at all - CodeGenModule should manage this list. 26148272a078e54d501cb05edd797c54b8e82ceb520David Chisnall llvm::StringMap<llvm::Constant*> ObjCStrings; 26281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// All of the protocols that have been declared. 26320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StringMap<llvm::Constant*> ExistingProtocols; 26481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// For each variant of a selector, we store the type encoding and a 26581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// placeholder value. For an untyped selector, the type will be the empty 26681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// string. Selector references are all done via the module's selector table, 26781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// so we create an alias as a placeholder and then replace it with the real 26881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// value later. 2699f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall typedef std::pair<std::string, llvm::GlobalAlias*> TypedSelector; 27081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Type of the selector map. This is roughly equivalent to the structure 27181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// used in the GNUstep runtime, which maintains a list of all of the valid 27281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// types for a selector in a table. 2735f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner typedef llvm::DenseMap<Selector, SmallVector<TypedSelector, 2> > 2749f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SelectorMap; 27581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// A map from selectors to selector types. This allows us to emit all 27681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// selectors of the same name and type together. 2779f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SelectorMap SelectorTable; 2789f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 27981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Selectors related to memory management. When compiling in GC mode, we 28081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// omit these. 281ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall Selector RetainSel, ReleaseSel, AutoreleaseSel; 28281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Runtime functions used for memory management in GC mode. Note that clang 28381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// supports code generation for calling these functions, but neither GNU 28481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// runtime actually supports this API properly yet. 2859f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction IvarAssignFn, StrongCastAssignFn, MemMoveFn, WeakReadFn, 2869f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall WeakAssignFn, GlobalAssignFn; 2879f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 28829254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall typedef std::pair<std::string, std::string> ClassAliasPair; 28929254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall /// All classes that have aliases set for them. 29029254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall std::vector<ClassAliasPair> ClassAliases; 29129254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall 2929735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnallprotected: 29381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Function used for throwing Objective-C exceptions. 2949f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction ExceptionThrowFn; 295809d1be9820039b4cf6efa48246a0d70ffa13394James Dennett /// Function used for rethrowing exceptions, used at the end of \@finally or 296809d1be9820039b4cf6efa48246a0d70ffa13394James Dennett /// \@synchronize blocks. 2979735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall LazyRuntimeFunction ExceptionReThrowFn; 29881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Function called when entering a catch function. This is required for 29981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// differentiating Objective-C exceptions and foreign exceptions. 3009735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall LazyRuntimeFunction EnterCatchFn; 30181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Function called when exiting from a catch block. Used to do exception 30281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// cleanup. 3039735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall LazyRuntimeFunction ExitCatchFn; 304809d1be9820039b4cf6efa48246a0d70ffa13394James Dennett /// Function called when entering an \@synchronize block. Acquires the lock. 3059f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction SyncEnterFn; 306809d1be9820039b4cf6efa48246a0d70ffa13394James Dennett /// Function called when exiting an \@synchronize block. Releases the lock. 3079f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction SyncExitFn; 3089f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 3099735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnallprivate: 3109735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall 31181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Function called if fast enumeration detects that the collection is 31281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// modified during the update. 3139f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction EnumerationMutationFn; 31481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Function for implementing synthesized property getters that return an 31581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// object. 3169f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction GetPropertyFn; 31781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Function for implementing synthesized property setters that return an 31881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// object. 3199f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction SetPropertyFn; 32081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Function used for non-object declared property getters. 3219f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction GetStructPropertyFn; 32281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Function used for non-object declared property setters. 3239f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction SetStructPropertyFn; 3249f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 32581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// The version of the runtime that this class targets. Must match the 32681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// version in the runtime. 327a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall int RuntimeVersion; 32881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// The version of the protocol class. Used to differentiate between ObjC1 32981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// and ObjC2 protocols. Objective-C 1 protocols can not contain optional 33081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// components and can not contain declared properties. We always emit 33181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Objective-C 2 property structures, but we have to pretend that they're 33281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Objective-C 1 property structures when targeting the GCC runtime or it 33381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// will abort. 3349f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall const int ProtocolVersion; 33520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovprivate: 33681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Generates an instance variable list structure. This is a structure 33781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// containing a size and an array of structures containing instance variable 33881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// metadata. This is used purely for introspection in the fragile ABI. In 33981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// the non-fragile ABI, it's used for instance variable fixup. 340795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling llvm::Constant *GenerateIvarList(ArrayRef<llvm::Constant *> IvarNames, 341795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling ArrayRef<llvm::Constant *> IvarTypes, 342795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling ArrayRef<llvm::Constant *> IvarOffsets); 34381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Generates a method list structure. This is a structure containing a size 34481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// and an array of structures containing method metadata. 34581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// 34681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// This structure is used by both classes and categories, and contains a next 34781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// pointer allowing them to be chained together in a linked list. 3485f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner llvm::Constant *GenerateMethodList(const StringRef &ClassName, 3495f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner const StringRef &CategoryName, 350795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling ArrayRef<Selector> MethodSels, 351795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling ArrayRef<llvm::Constant *> MethodTypes, 35220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov bool isClassMethodList); 353809d1be9820039b4cf6efa48246a0d70ffa13394James Dennett /// Emits an empty protocol. This is used for \@protocol() where no protocol 35481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// is found. The runtime will (hopefully) fix up the pointer to refer to the 35581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// real protocol. 356f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::Constant *GenerateEmptyProtocol(const std::string &ProtocolName); 35781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Generates a list of property metadata structures. This follows the same 35881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// pattern as method and instance variable metadata lists. 359d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *GeneratePropertyList(const ObjCImplementationDecl *OID, 3605f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVectorImpl<Selector> &InstanceMethodSels, 3615f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVectorImpl<llvm::Constant*> &InstanceMethodTypes); 36281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Generates a list of referenced protocols. Classes, categories, and 36381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// protocols all use this structure. 364795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling llvm::Constant *GenerateProtocolList(ArrayRef<std::string> Protocols); 36581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// To ensure that all protocols are seen by the runtime, we add a category on 36681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// a class defined in the runtime, declaring no methods, but adopting the 36781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// protocols. This is a horribly ugly hack, but it allows us to collect all 36881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// of the protocols without changing the ABI. 369d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian void GenerateProtocolHolderCategory(void); 37081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Generates a class structure. 37120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateClassStructure( 37220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MetaClass, 37320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SuperClass, 37420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov unsigned info, 375d002cc6fc5b72bf00e3b7b4571ccf0f23c789b4bChris Lattner const char *Name, 37620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Version, 37720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *InstanceSize, 37820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *IVars, 37920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Methods, 380d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *Protocols, 381d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *IvarOffsets, 3828c757f9ea33dccff4da7810e0c1bda59c19ddc9aDavid Chisnall llvm::Constant *Properties, 383917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::Constant *StrongIvarBitmap, 384917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::Constant *WeakIvarBitmap, 3858c757f9ea33dccff4da7810e0c1bda59c19ddc9aDavid Chisnall bool isMeta=false); 38681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Generates a method list. This is used by protocols to define the required 38781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// and optional methods. 38820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateProtocolMethodList( 389795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling ArrayRef<llvm::Constant *> MethodNames, 390795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling ArrayRef<llvm::Constant *> MethodTypes); 39181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Returns a selector with the specified type encoding. An empty string is 39281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// used to return an untyped selector (with the types field set to NULL). 3939f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::Value *GetSelector(CGBuilderTy &Builder, Selector Sel, 3949f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall const std::string &TypeEncoding, bool lval); 39581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Returns the variable used to store the offset of an instance variable. 3969cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian llvm::GlobalVariable *ObjCIvarOffsetVariable(const ObjCInterfaceDecl *ID, 3979cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCIvarDecl *Ivar); 39881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Emits a reference to a class. This allows the linker to object if there 39981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// is no class of the matching name. 400f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCallprotected: 4012a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner void EmitClassRef(const std::string &className); 402c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall /// Emits a pointer to the named class 403f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall virtual llvm::Value *GetClassNamed(CGBuilderTy &Builder, 404f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall const std::string &Name, bool isWeak); 40581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Looks up the method for sending a message to the specified object. This 40681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// mechanism differs between the GCC and GNU runtimes, so this method must be 40781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// overridden in subclasses. 408c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall virtual llvm::Value *LookupIMP(CodeGenFunction &CGF, 409c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *&Receiver, 410c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *cmd, 411c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::MDNode *node) = 0; 412917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// Looks up the method for sending a message to a superclass. This 413917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// mechanism differs between the GCC and GNU runtimes, so this method must 414917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// be overridden in subclasses. 415c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall virtual llvm::Value *LookupIMPSuper(CodeGenFunction &CGF, 416c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *ObjCSuper, 417c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *cmd) = 0; 418917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// Libobjc2 uses a bitfield representation where small(ish) bitfields are 419917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// stored in a 64-bit value with the low bit set to 1 and the remaining 63 420917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// bits set to their values, LSB first, while larger ones are stored in a 421917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// structure of this / form: 422917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// 423917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// struct { int32_t length; int32_t values[length]; }; 424917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// 425917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// The values in the array are stored in host-endian format, with the least 426917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// significant bit being assumed to come first in the bitfield. Therefore, 427917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// a bitfield with the 64th bit set will be (int64_t)&{ 2, [0, 1<<31] }, 428917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// while a bitfield / with the 63rd bit set will be 1<<64. 429795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling llvm::Constant *MakeBitField(ArrayRef<bool> bits); 4300f984268b05edab2cc555a427c441baa9c252658Chris Lattnerpublic: 4319f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall CGObjCGNU(CodeGenModule &cgm, unsigned runtimeABIVersion, 4329f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall unsigned protocolClassVersion); 4339f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 4340d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall virtual llvm::Constant *GenerateConstantString(const StringLiteral *); 4359f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 4369f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual RValue 4379f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall GenerateMessageSend(CodeGenFunction &CGF, 438ef072fd2f3347cfd857d6eb787b245b950771430John McCall ReturnValueSlot Return, 4397f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar QualType ResultType, 4407f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar Selector Sel, 441f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar llvm::Value *Receiver, 442df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian const CallArgList &CallArgs, 443c6cd5fd3eae71f8841504a396563343cfaaf503eDavid Chisnall const ObjCInterfaceDecl *Class, 444df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian const ObjCMethodDecl *Method); 4459f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual RValue 4469f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall GenerateMessageSendSuper(CodeGenFunction &CGF, 447ef072fd2f3347cfd857d6eb787b245b950771430John McCall ReturnValueSlot Return, 4487f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar QualType ResultType, 4497f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar Selector Sel, 450f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar const ObjCInterfaceDecl *Class, 4517ce77920a35060f1c8dd72e541e42ce296ccd168Fariborz Jahanian bool isCategoryImpl, 452f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar llvm::Value *Receiver, 45319cd87eb5fb3c197e631ce08fd52c446c4d4e8f1Daniel Dunbar bool IsClassMessage, 454d6c93d703541c992e06eb9a59a2d826a30da65b2Daniel Dunbar const CallArgList &CallArgs, 455d6c93d703541c992e06eb9a59a2d826a30da65b2Daniel Dunbar const ObjCMethodDecl *Method); 45645d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbar virtual llvm::Value *GetClass(CGBuilderTy &Builder, 457ddb2a3d55a24a1dbdf9152621642d9a4b4fc2f61Daniel Dunbar const ObjCInterfaceDecl *OID); 45803b2960c14aede6ac82bdef32247094ebb72fa69Fariborz Jahanian virtual llvm::Value *GetSelector(CGBuilderTy &Builder, Selector Sel, 45903b2960c14aede6ac82bdef32247094ebb72fa69Fariborz Jahanian bool lval = false); 4606d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbar virtual llvm::Value *GetSelector(CGBuilderTy &Builder, const ObjCMethodDecl 4616d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbar *Method); 462cf5abc7ba032bd35158e4d75b0bc92a482fc67e8Fariborz Jahanian virtual llvm::Constant *GetEHType(QualType T); 4631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4641eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump virtual llvm::Function *GenerateMethod(const ObjCMethodDecl *OMD, 465679a502d462ef819e6175b58e255ca3f3391e7cfFariborz Jahanian const ObjCContainerDecl *CD); 4667ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar virtual void GenerateCategory(const ObjCCategoryImplDecl *CMD); 4677ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar virtual void GenerateClass(const ObjCImplementationDecl *ClassDecl); 46829254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall virtual void RegisterAlias(const ObjCCompatibleAliasDecl *OAD); 46945d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbar virtual llvm::Value *GenerateProtocolRef(CGBuilderTy &Builder, 470af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar const ObjCProtocolDecl *PD); 471af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar virtual void GenerateProtocol(const ObjCProtocolDecl *PD); 47220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov virtual llvm::Function *ModuleInitFunction(); 473789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnall virtual llvm::Constant *GetPropertyGetFunction(); 474789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnall virtual llvm::Constant *GetPropertySetFunction(); 475ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek virtual llvm::Constant *GetOptimizedPropertySetFunction(bool atomic, 476ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek bool copy); 477789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnall virtual llvm::Constant *GetSetStructFunction(); 478e3173021fa3bfdf7e6759d67838e385a83b2d57eFariborz Jahanian virtual llvm::Constant *GetCppAtomicObjectFunction(); 479789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnall virtual llvm::Constant *GetGetStructFunction(); 480309a4368cd299cff30ab22709e2b772cf8059e45Daniel Dunbar virtual llvm::Constant *EnumerationMutationFunction(); 4811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4829f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual void EmitTryStmt(CodeGenFunction &CGF, 483f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall const ObjCAtTryStmt &S); 4849f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual void EmitSynchronizedStmt(CodeGenFunction &CGF, 485f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall const ObjCAtSynchronizedStmt &S); 4869f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual void EmitThrowStmt(CodeGenFunction &CGF, 48764d5d6c5903157c521af496479d06dc26032d718Anders Carlsson const ObjCAtThrowStmt &S); 4889f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual llvm::Value * EmitObjCWeakRead(CodeGenFunction &CGF, 4896dc2317b59cb1180a59f6c283d96b7a5dfeb5307Fariborz Jahanian llvm::Value *AddrWeakObj); 4909f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual void EmitObjCWeakAssign(CodeGenFunction &CGF, 4913e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian llvm::Value *src, llvm::Value *dst); 4929f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual void EmitObjCGlobalAssign(CodeGenFunction &CGF, 493021a7a63984f0f912dc9e9dae2a1b3e1509a40ceFariborz Jahanian llvm::Value *src, llvm::Value *dest, 494021a7a63984f0f912dc9e9dae2a1b3e1509a40ceFariborz Jahanian bool threadlocal=false); 4959f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual void EmitObjCIvarAssign(CodeGenFunction &CGF, 4966c7a1f364796ce1acb988714e9e42076d1ce332eFariborz Jahanian llvm::Value *src, llvm::Value *dest, 4976c7a1f364796ce1acb988714e9e42076d1ce332eFariborz Jahanian llvm::Value *ivarOffset); 4989f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual void EmitObjCStrongCastAssign(CodeGenFunction &CGF, 49958626500527695865683d1d65053743de8770b60Fariborz Jahanian llvm::Value *src, llvm::Value *dest); 5009f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual void EmitGCMemmoveCollectable(CodeGenFunction &CGF, 5011eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *DestPtr, 502082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian llvm::Value *SrcPtr, 50355bcace250e1ff366e4482714b344b8cbc8be5f3Fariborz Jahanian llvm::Value *Size); 5049f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual LValue EmitObjCValueForIvar(CodeGenFunction &CGF, 505598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian QualType ObjectTy, 506598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian llvm::Value *BaseValue, 507598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian const ObjCIvarDecl *Ivar, 508598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian unsigned CVRQualifiers); 5099f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual llvm::Value *EmitIvarOffset(CodeGenFunction &CGF, 5102a03192a02dbf4fdff438d1e658356bde871aba4Daniel Dunbar const ObjCInterfaceDecl *Interface, 511f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian const ObjCIvarDecl *Ivar); 512c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall virtual llvm::Value *EmitNSAutoreleasePoolClassRef(CGBuilderTy &Builder); 5139f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual llvm::Constant *BuildGCBlockLayout(CodeGenModule &CGM, 5146b5a61b6dc400027fd793dcadceeb9da944a37eaJohn McCall const CGBlockInfo &blockInfo) { 51589ecd41e0a6bfb3b0913dbe41c3c666340b308c7Fariborz Jahanian return NULLPtr; 51689ecd41e0a6bfb3b0913dbe41c3c666340b308c7Fariborz Jahanian } 5176f40e2244b0590f144c5ceee07981a962fbbc72eFariborz Jahanian 5186f40e2244b0590f144c5ceee07981a962fbbc72eFariborz Jahanian virtual llvm::GlobalVariable *GetClassGlobal(const std::string &Name) { 5196f40e2244b0590f144c5ceee07981a962fbbc72eFariborz Jahanian return 0; 5206f40e2244b0590f144c5ceee07981a962fbbc72eFariborz Jahanian } 5210f984268b05edab2cc555a427c441baa9c252658Chris Lattner}; 52281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// Class representing the legacy GCC Objective-C ABI. This is the default when 52381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// -fobjc-nonfragile-abi is not specified. 52481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// 52581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// The GCC ABI target actually generates code that is approximately compatible 52681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// with the new GNUstep runtime ABI, but refrains from using any features that 52781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// would not work with the GCC runtime. For example, clang always generates 52881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// the extended form of the class structure, and the extra fields are simply 52981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// ignored by GCC libobjc. 5309f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallclass CGObjCGCC : public CGObjCGNU { 53181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// The GCC ABI message lookup function. Returns an IMP pointing to the 53281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// method implementation for this message. 533c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall LazyRuntimeFunction MsgLookupFn; 53481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// The GCC ABI superclass message lookup function. Takes a pointer to a 53581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// structure describing the receiver and the class, and a selector as 53681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// arguments. Returns the IMP for the corresponding method. 537c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall LazyRuntimeFunction MsgLookupSuperFn; 538c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnallprotected: 539c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall virtual llvm::Value *LookupIMP(CodeGenFunction &CGF, 540c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *&Receiver, 541c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *cmd, 542c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::MDNode *node) { 543c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall CGBuilderTy &Builder = CGF.Builder; 5446f3887ec3652482d2e0e8959d8a89b785330b0b2David Chisnall llvm::Value *args[] = { 545c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall EnforceType(Builder, Receiver, IdTy), 5466f3887ec3652482d2e0e8959d8a89b785330b0b2David Chisnall EnforceType(Builder, cmd, SelectorTy) }; 5476f3887ec3652482d2e0e8959d8a89b785330b0b2David Chisnall llvm::CallSite imp = CGF.EmitCallOrInvoke(MsgLookupFn, args); 5486f3887ec3652482d2e0e8959d8a89b785330b0b2David Chisnall imp->setMetadata(msgSendMDKind, node); 5496f3887ec3652482d2e0e8959d8a89b785330b0b2David Chisnall return imp.getInstruction(); 550c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } 551c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall virtual llvm::Value *LookupIMPSuper(CodeGenFunction &CGF, 552c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *ObjCSuper, 553c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *cmd) { 554c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall CGBuilderTy &Builder = CGF.Builder; 555c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *lookupArgs[] = {EnforceType(Builder, ObjCSuper, 556c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall PtrToObjCSuperTy), cmd}; 5574c7d9f1507d0f102bd4133bba63348636facd469Jay Foad return Builder.CreateCall(MsgLookupSuperFn, lookupArgs); 558c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } 5599f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall public: 560c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall CGObjCGCC(CodeGenModule &Mod) : CGObjCGNU(Mod, 8, 2) { 561c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // IMP objc_msg_lookup(id, SEL); 562c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall MsgLookupFn.init(&CGM, "objc_msg_lookup", IMPTy, IdTy, SelectorTy, NULL); 563c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // IMP objc_msg_lookup_super(struct objc_super*, SEL); 564c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall MsgLookupSuperFn.init(&CGM, "objc_msg_lookup_super", IMPTy, 565c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall PtrToObjCSuperTy, SelectorTy, NULL); 566c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } 5679f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall}; 56881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// Class used when targeting the new GNUstep runtime ABI. 5699f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallclass CGObjCGNUstep : public CGObjCGNU { 57081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// The slot lookup function. Returns a pointer to a cacheable structure 57181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// that contains (among other things) the IMP. 572c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall LazyRuntimeFunction SlotLookupFn; 57381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// The GNUstep ABI superclass message lookup function. Takes a pointer to 57481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// a structure describing the receiver and the class, and a selector as 57581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// arguments. Returns the slot for the corresponding method. Superclass 57681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// message lookup rarely changes, so this is a good caching opportunity. 577c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall LazyRuntimeFunction SlotLookupSuperFn; 57881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Type of an slot structure pointer. This is returned by the various 57981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// lookup functions. 580c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Type *SlotTy; 581c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall protected: 582c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall virtual llvm::Value *LookupIMP(CodeGenFunction &CGF, 583c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *&Receiver, 584c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *cmd, 585c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::MDNode *node) { 586c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall CGBuilderTy &Builder = CGF.Builder; 587c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Function *LookupFn = SlotLookupFn; 588c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 589c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // Store the receiver on the stack so that we can reload it later 590c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *ReceiverPtr = CGF.CreateTempAlloca(Receiver->getType()); 591c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall Builder.CreateStore(Receiver, ReceiverPtr); 592c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 593c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *self; 594c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 595c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall if (isa<ObjCMethodDecl>(CGF.CurCodeDecl)) { 596c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall self = CGF.LoadObjCSelf(); 597c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } else { 598c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall self = llvm::ConstantPointerNull::get(IdTy); 599c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } 600c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 601c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // The lookup function is guaranteed not to capture the receiver pointer. 602c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall LookupFn->setDoesNotCapture(1); 603c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 6046f3887ec3652482d2e0e8959d8a89b785330b0b2David Chisnall llvm::Value *args[] = { 605c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall EnforceType(Builder, ReceiverPtr, PtrToIdTy), 606c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall EnforceType(Builder, cmd, SelectorTy), 6076f3887ec3652482d2e0e8959d8a89b785330b0b2David Chisnall EnforceType(Builder, self, IdTy) }; 6086f3887ec3652482d2e0e8959d8a89b785330b0b2David Chisnall llvm::CallSite slot = CGF.EmitCallOrInvoke(LookupFn, args); 6096f3887ec3652482d2e0e8959d8a89b785330b0b2David Chisnall slot.setOnlyReadsMemory(); 610c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall slot->setMetadata(msgSendMDKind, node); 611c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 612c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // Load the imp from the slot 6136f3887ec3652482d2e0e8959d8a89b785330b0b2David Chisnall llvm::Value *imp = 6146f3887ec3652482d2e0e8959d8a89b785330b0b2David Chisnall Builder.CreateLoad(Builder.CreateStructGEP(slot.getInstruction(), 4)); 615c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 616c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // The lookup function may have changed the receiver, so make sure we use 617c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // the new one. 618c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall Receiver = Builder.CreateLoad(ReceiverPtr, true); 619c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall return imp; 620c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } 621c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall virtual llvm::Value *LookupIMPSuper(CodeGenFunction &CGF, 622c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *ObjCSuper, 623c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *cmd) { 624c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall CGBuilderTy &Builder = CGF.Builder; 625c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *lookupArgs[] = {ObjCSuper, cmd}; 626c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 6274c7d9f1507d0f102bd4133bba63348636facd469Jay Foad llvm::CallInst *slot = Builder.CreateCall(SlotLookupSuperFn, lookupArgs); 628c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall slot->setOnlyReadsMemory(); 629c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 630c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall return Builder.CreateLoad(Builder.CreateStructGEP(slot, 4)); 631c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } 6329f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall public: 633c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall CGObjCGNUstep(CodeGenModule &Mod) : CGObjCGNU(Mod, 9, 3) { 6347650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *SlotStructTy = llvm::StructType::get(PtrTy, 635c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall PtrTy, PtrTy, IntTy, IMPTy, NULL); 636c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall SlotTy = llvm::PointerType::getUnqual(SlotStructTy); 637c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // Slot_t objc_msg_lookup_sender(id *receiver, SEL selector, id sender); 638c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall SlotLookupFn.init(&CGM, "objc_msg_lookup_sender", SlotTy, PtrToIdTy, 639c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall SelectorTy, IdTy, NULL); 640c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // Slot_t objc_msg_lookup_super(struct objc_super*, SEL); 641c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall SlotLookupSuperFn.init(&CGM, "objc_slot_lookup_super", SlotTy, 642c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall PtrToObjCSuperTy, SelectorTy, NULL); 6439735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // If we're in ObjC++ mode, then we want to make 6444e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (CGM.getLangOpts().CPlusPlus) { 6459cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::Type *VoidTy = llvm::Type::getVoidTy(VMContext); 6469735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // void *__cxa_begin_catch(void *e) 6479735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall EnterCatchFn.init(&CGM, "__cxa_begin_catch", PtrTy, PtrTy, NULL); 6489735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // void __cxa_end_catch(void) 6494bd5d09e3a233ed23ec6f913166e4b75d8de215cDavid Chisnall ExitCatchFn.init(&CGM, "__cxa_end_catch", VoidTy, NULL); 6509735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // void _Unwind_Resume_or_Rethrow(void*) 651978d415adab4ef423f5aef430ddfdbefc4cfb000David Chisnall ExceptionReThrowFn.init(&CGM, "_Unwind_Resume_or_Rethrow", VoidTy, PtrTy, NULL); 6529735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall } 653c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } 6549f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall}; 6559f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 6560a7dd788dbef975f35f273c7ab913f480f7edd60John McCall/// Support for the ObjFW runtime. Support here is due to 6570a7dd788dbef975f35f273c7ab913f480f7edd60John McCall/// Jonathan Schleifer <js@webkeks.org>, the ObjFW maintainer. 6580a7dd788dbef975f35f273c7ab913f480f7edd60John McCallclass CGObjCObjFW: public CGObjCGNU { 6590a7dd788dbef975f35f273c7ab913f480f7edd60John McCallprotected: 6600a7dd788dbef975f35f273c7ab913f480f7edd60John McCall /// The GCC ABI message lookup function. Returns an IMP pointing to the 6610a7dd788dbef975f35f273c7ab913f480f7edd60John McCall /// method implementation for this message. 6620a7dd788dbef975f35f273c7ab913f480f7edd60John McCall LazyRuntimeFunction MsgLookupFn; 6630a7dd788dbef975f35f273c7ab913f480f7edd60John McCall /// The GCC ABI superclass message lookup function. Takes a pointer to a 6640a7dd788dbef975f35f273c7ab913f480f7edd60John McCall /// structure describing the receiver and the class, and a selector as 6650a7dd788dbef975f35f273c7ab913f480f7edd60John McCall /// arguments. Returns the IMP for the corresponding method. 6660a7dd788dbef975f35f273c7ab913f480f7edd60John McCall LazyRuntimeFunction MsgLookupSuperFn; 6670a7dd788dbef975f35f273c7ab913f480f7edd60John McCall 6680a7dd788dbef975f35f273c7ab913f480f7edd60John McCall virtual llvm::Value *LookupIMP(CodeGenFunction &CGF, 6690a7dd788dbef975f35f273c7ab913f480f7edd60John McCall llvm::Value *&Receiver, 6700a7dd788dbef975f35f273c7ab913f480f7edd60John McCall llvm::Value *cmd, 6710a7dd788dbef975f35f273c7ab913f480f7edd60John McCall llvm::MDNode *node) { 6720a7dd788dbef975f35f273c7ab913f480f7edd60John McCall CGBuilderTy &Builder = CGF.Builder; 6730a7dd788dbef975f35f273c7ab913f480f7edd60John McCall llvm::Value *args[] = { 6740a7dd788dbef975f35f273c7ab913f480f7edd60John McCall EnforceType(Builder, Receiver, IdTy), 6750a7dd788dbef975f35f273c7ab913f480f7edd60John McCall EnforceType(Builder, cmd, SelectorTy) }; 6760a7dd788dbef975f35f273c7ab913f480f7edd60John McCall llvm::CallSite imp = CGF.EmitCallOrInvoke(MsgLookupFn, args); 6770a7dd788dbef975f35f273c7ab913f480f7edd60John McCall imp->setMetadata(msgSendMDKind, node); 6780a7dd788dbef975f35f273c7ab913f480f7edd60John McCall return imp.getInstruction(); 6790a7dd788dbef975f35f273c7ab913f480f7edd60John McCall } 6800a7dd788dbef975f35f273c7ab913f480f7edd60John McCall 6810a7dd788dbef975f35f273c7ab913f480f7edd60John McCall virtual llvm::Value *LookupIMPSuper(CodeGenFunction &CGF, 6820a7dd788dbef975f35f273c7ab913f480f7edd60John McCall llvm::Value *ObjCSuper, 6830a7dd788dbef975f35f273c7ab913f480f7edd60John McCall llvm::Value *cmd) { 6840a7dd788dbef975f35f273c7ab913f480f7edd60John McCall CGBuilderTy &Builder = CGF.Builder; 6850a7dd788dbef975f35f273c7ab913f480f7edd60John McCall llvm::Value *lookupArgs[] = {EnforceType(Builder, ObjCSuper, 6860a7dd788dbef975f35f273c7ab913f480f7edd60John McCall PtrToObjCSuperTy), cmd}; 6870a7dd788dbef975f35f273c7ab913f480f7edd60John McCall return Builder.CreateCall(MsgLookupSuperFn, lookupArgs); 6880a7dd788dbef975f35f273c7ab913f480f7edd60John McCall } 6890a7dd788dbef975f35f273c7ab913f480f7edd60John McCall 690f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall virtual llvm::Value *GetClassNamed(CGBuilderTy &Builder, 691f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall const std::string &Name, bool isWeak) { 692f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall if (isWeak) 693f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall return CGObjCGNU::GetClassNamed(Builder, Name, isWeak); 694f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall 695f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall EmitClassRef(Name); 696f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall 697f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall std::string SymbolName = "_OBJC_CLASS_" + Name; 698f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall 699f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall llvm::GlobalVariable *ClassSymbol = TheModule.getGlobalVariable(SymbolName); 700f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall 701f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall if (!ClassSymbol) 702f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall ClassSymbol = new llvm::GlobalVariable(TheModule, LongTy, false, 703f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall llvm::GlobalValue::ExternalLinkage, 704f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall 0, SymbolName); 705f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall 706f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall return ClassSymbol; 707f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall } 708f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall 709f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCallpublic: 7100a7dd788dbef975f35f273c7ab913f480f7edd60John McCall CGObjCObjFW(CodeGenModule &Mod): CGObjCGNU(Mod, 9, 3) { 7110a7dd788dbef975f35f273c7ab913f480f7edd60John McCall // IMP objc_msg_lookup(id, SEL); 7120a7dd788dbef975f35f273c7ab913f480f7edd60John McCall MsgLookupFn.init(&CGM, "objc_msg_lookup", IMPTy, IdTy, SelectorTy, NULL); 7130a7dd788dbef975f35f273c7ab913f480f7edd60John McCall // IMP objc_msg_lookup_super(struct objc_super*, SEL); 7140a7dd788dbef975f35f273c7ab913f480f7edd60John McCall MsgLookupSuperFn.init(&CGM, "objc_msg_lookup_super", IMPTy, 7150a7dd788dbef975f35f273c7ab913f480f7edd60John McCall PtrToObjCSuperTy, SelectorTy, NULL); 7160a7dd788dbef975f35f273c7ab913f480f7edd60John McCall } 717f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall}; 7180f984268b05edab2cc555a427c441baa9c252658Chris Lattner} // end anonymous namespace 7190f984268b05edab2cc555a427c441baa9c252658Chris Lattner 72020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 7212a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner/// Emits a reference to a dummy variable which is emitted with each class. 7222a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner/// This ensures that a linker error will be generated when trying to link 7232a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner/// together modules where a referenced class is not defined. 724bb1c8600218b3244340331165fc7cba7bf227655Mike Stumpvoid CGObjCGNU::EmitClassRef(const std::string &className) { 7252a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner std::string symbolRef = "__objc_class_ref_" + className; 7262a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner // Don't emit two copies of the same symbol 727bb1c8600218b3244340331165fc7cba7bf227655Mike Stump if (TheModule.getGlobalVariable(symbolRef)) 728bb1c8600218b3244340331165fc7cba7bf227655Mike Stump return; 7292a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner std::string symbolName = "__objc_class_name_" + className; 7302a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner llvm::GlobalVariable *ClassSymbol = TheModule.getGlobalVariable(symbolName); 7312a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner if (!ClassSymbol) { 7321c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson ClassSymbol = new llvm::GlobalVariable(TheModule, LongTy, false, 7331c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson llvm::GlobalValue::ExternalLinkage, 0, symbolName); 7342a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner } 7351c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson new llvm::GlobalVariable(TheModule, ClassSymbol->getType(), true, 736f35271b8677a5f31498b89587b1da42a06dd46fdChris Lattner llvm::GlobalValue::WeakAnyLinkage, ClassSymbol, symbolRef); 7372a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner} 73820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 7395f9e272e632e951b1efe824cd16acb4d96077930Chris Lattnerstatic std::string SymbolNameForMethod(const StringRef &ClassName, 7405f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner const StringRef &CategoryName, const Selector MethodName, 7419f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall bool isClassMethod) { 7429f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall std::string MethodNameColonStripped = MethodName.getAsString(); 743d346736dfe5ef584a2d0c9d27d217408ee394b9bDavid Chisnall std::replace(MethodNameColonStripped.begin(), MethodNameColonStripped.end(), 744d346736dfe5ef584a2d0c9d27d217408ee394b9bDavid Chisnall ':', '_'); 7455f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner return (Twine(isClassMethod ? "_c_" : "_i_") + ClassName + "_" + 7469f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall CategoryName + "_" + MethodNameColonStripped).str(); 74787935a8d5c0eeda8ad62815f4fc815ad25c7cd8eDavid Chisnall} 74820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 7499f6614e3c5d34998dd5a5cc6faf0746dcd611d49David ChisnallCGObjCGNU::CGObjCGNU(CodeGenModule &cgm, unsigned runtimeABIVersion, 7509f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall unsigned protocolClassVersion) 751de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall : CGObjCRuntime(cgm), TheModule(CGM.getModule()), 752de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall VMContext(cgm.getLLVMContext()), ClassPtrAlias(0), MetaClassPtrAlias(0), 753de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall RuntimeVersion(runtimeABIVersion), ProtocolVersion(protocolClassVersion) { 754c6cd5fd3eae71f8841504a396563343cfaaf503eDavid Chisnall 755c6cd5fd3eae71f8841504a396563343cfaaf503eDavid Chisnall msgSendMDKind = VMContext.getMDKindID("GNUObjCMessageSend"); 756c6cd5fd3eae71f8841504a396563343cfaaf503eDavid Chisnall 7579f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall CodeGenTypes &Types = CGM.getTypes(); 758e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner IntTy = cast<llvm::IntegerType>( 7599f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Types.ConvertType(CGM.getContext().IntTy)); 760e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner LongTy = cast<llvm::IntegerType>( 7619f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Types.ConvertType(CGM.getContext().LongTy)); 7628fac25d33b13e25f512dd921d4d5a4b565f5d175David Chisnall SizeTy = cast<llvm::IntegerType>( 7639f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Types.ConvertType(CGM.getContext().getSizeType())); 7648fac25d33b13e25f512dd921d4d5a4b565f5d175David Chisnall PtrDiffTy = cast<llvm::IntegerType>( 7659f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Types.ConvertType(CGM.getContext().getPointerDiffType())); 7668fac25d33b13e25f512dd921d4d5a4b565f5d175David Chisnall BoolTy = CGM.getTypes().ConvertType(CGM.getContext().BoolTy); 7671eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 768d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Int8Ty = llvm::Type::getInt8Ty(VMContext); 769d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // C string type. Used in lots of places. 770d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrToInt8Ty = llvm::PointerType::getUnqual(Int8Ty); 771d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 7724a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Zeros[0] = llvm::ConstantInt::get(LongTy, 0); 77320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Zeros[1] = Zeros[0]; 774d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian NULLPtr = llvm::ConstantPointerNull::get(PtrToInt8Ty); 775391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner // Get the selector Type. 7760d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall QualType selTy = CGM.getContext().getObjCSelType(); 7770d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall if (QualType() == selTy) { 7780d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall SelectorTy = PtrToInt8Ty; 7790d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall } else { 7800d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall SelectorTy = cast<llvm::PointerType>(CGM.getTypes().ConvertType(selTy)); 7810d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall } 782e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner 78396e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson PtrToIntTy = llvm::PointerType::getUnqual(IntTy); 784391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner PtrTy = PtrToInt8Ty; 7851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 786917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall Int32Ty = llvm::Type::getInt32Ty(VMContext); 787917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall Int64Ty = llvm::Type::getInt64Ty(VMContext); 788917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall 78949de5289acea91c9d224c9aadd4d527e8f9fdaffDavid Chisnall IntPtrTy = 79049de5289acea91c9d224c9aadd4d527e8f9fdaffDavid Chisnall TheModule.getPointerSize() == llvm::Module::Pointer32 ? Int32Ty : Int64Ty; 79149de5289acea91c9d224c9aadd4d527e8f9fdaffDavid Chisnall 792391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner // Object type 7937bcf6c3e098e808282cc96309c02c08ab6229940David Chisnall QualType UnqualIdTy = CGM.getContext().getObjCIdType(); 7947bcf6c3e098e808282cc96309c02c08ab6229940David Chisnall ASTIdTy = CanQualType(); 7957bcf6c3e098e808282cc96309c02c08ab6229940David Chisnall if (UnqualIdTy != QualType()) { 7967bcf6c3e098e808282cc96309c02c08ab6229940David Chisnall ASTIdTy = CGM.getContext().getCanonicalType(UnqualIdTy); 7970d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall IdTy = cast<llvm::PointerType>(CGM.getTypes().ConvertType(ASTIdTy)); 7987bcf6c3e098e808282cc96309c02c08ab6229940David Chisnall } else { 7997bcf6c3e098e808282cc96309c02c08ab6229940David Chisnall IdTy = PtrToInt8Ty; 8000d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall } 801ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall PtrToIdTy = llvm::PointerType::getUnqual(IdTy); 8021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8037650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner ObjCSuperTy = llvm::StructType::get(IdTy, IdTy, NULL); 804c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall PtrToObjCSuperTy = llvm::PointerType::getUnqual(ObjCSuperTy); 805c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 8069cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::Type *VoidTy = llvm::Type::getVoidTy(VMContext); 8079f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 8089f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // void objc_exception_throw(id); 8099f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall ExceptionThrowFn.init(&CGM, "objc_exception_throw", VoidTy, IdTy, NULL); 8109735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall ExceptionReThrowFn.init(&CGM, "objc_exception_throw", VoidTy, IdTy, NULL); 8119f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // int objc_sync_enter(id); 8129f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SyncEnterFn.init(&CGM, "objc_sync_enter", IntTy, IdTy, NULL); 8139f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // int objc_sync_exit(id); 8149f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SyncExitFn.init(&CGM, "objc_sync_exit", IntTy, IdTy, NULL); 8159f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 8169f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // void objc_enumerationMutation (id) 8179f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall EnumerationMutationFn.init(&CGM, "objc_enumerationMutation", VoidTy, 8189f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall IdTy, NULL); 8199f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 8209f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // id objc_getProperty(id, SEL, ptrdiff_t, BOOL) 8219f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall GetPropertyFn.init(&CGM, "objc_getProperty", IdTy, IdTy, SelectorTy, 8229f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall PtrDiffTy, BoolTy, NULL); 8239f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // void objc_setProperty(id, SEL, ptrdiff_t, id, BOOL, BOOL) 8249f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SetPropertyFn.init(&CGM, "objc_setProperty", VoidTy, IdTy, SelectorTy, 8259f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall PtrDiffTy, IdTy, BoolTy, BoolTy, NULL); 8269f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // void objc_setPropertyStruct(void*, void*, ptrdiff_t, BOOL, BOOL) 8279f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall GetStructPropertyFn.init(&CGM, "objc_getPropertyStruct", VoidTy, PtrTy, PtrTy, 8289f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall PtrDiffTy, BoolTy, BoolTy, NULL); 8299f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // void objc_setPropertyStruct(void*, void*, ptrdiff_t, BOOL, BOOL) 8309f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SetStructPropertyFn.init(&CGM, "objc_setPropertyStruct", VoidTy, PtrTy, PtrTy, 8319f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall PtrDiffTy, BoolTy, BoolTy, NULL); 8329f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 833391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner // IMP type 8349cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::Type *IMPArgs[] = { IdTy, SelectorTy }; 835c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall IMPTy = llvm::PointerType::getUnqual(llvm::FunctionType::get(IdTy, IMPArgs, 836c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall true)); 837ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall 8384e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie const LangOptions &Opts = CGM.getLangOpts(); 839e289d81369914678db386f6aa86faf8f178e245dDouglas Gregor if ((Opts.getGC() != LangOptions::NonGC) || Opts.ObjCAutoRefCount) 840f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall RuntimeVersion = 10; 841f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall 8429735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // Don't bother initialising the GC stuff unless we're compiling in GC mode 843e289d81369914678db386f6aa86faf8f178e245dDouglas Gregor if (Opts.getGC() != LangOptions::NonGC) { 844a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall // This is a bit of an hack. We should sort this out by having a proper 845a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall // CGObjCGNUstep subclass for GC, but we may want to really support the old 846a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall // ABI and GC added in ObjectiveC2.framework, so we fudge it a bit for now 847ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // Get selectors needed in GC mode 848ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall RetainSel = GetNullarySelector("retain", CGM.getContext()); 849ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall ReleaseSel = GetNullarySelector("release", CGM.getContext()); 850ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall AutoreleaseSel = GetNullarySelector("autorelease", CGM.getContext()); 851ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall 852ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // Get functions needed in GC mode 853ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall 854ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // id objc_assign_ivar(id, id, ptrdiff_t); 8559f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall IvarAssignFn.init(&CGM, "objc_assign_ivar", IdTy, IdTy, IdTy, PtrDiffTy, 8569f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall NULL); 857ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // id objc_assign_strongCast (id, id*) 8589f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall StrongCastAssignFn.init(&CGM, "objc_assign_strongCast", IdTy, IdTy, 8599f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall PtrToIdTy, NULL); 860ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // id objc_assign_global(id, id*); 8619f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall GlobalAssignFn.init(&CGM, "objc_assign_global", IdTy, IdTy, PtrToIdTy, 8629f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall NULL); 863ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // id objc_assign_weak(id, id*); 8649f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall WeakAssignFn.init(&CGM, "objc_assign_weak", IdTy, IdTy, PtrToIdTy, NULL); 865ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // id objc_read_weak(id*); 8669f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall WeakReadFn.init(&CGM, "objc_read_weak", IdTy, PtrToIdTy, NULL); 867ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // void *objc_memmove_collectable(void*, void *, size_t); 8689f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall MemMoveFn.init(&CGM, "objc_memmove_collectable", PtrTy, PtrTy, PtrTy, 8699f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SizeTy, NULL); 870ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 87120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 872bb1c8600218b3244340331165fc7cba7bf227655Mike Stump 873c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnallllvm::Value *CGObjCGNU::GetClassNamed(CGBuilderTy &Builder, 874d3fc7296ae95353173bae25ee4dd3ecf4d6dced1David Chisnall const std::string &Name, 875d3fc7296ae95353173bae25ee4dd3ecf4d6dced1David Chisnall bool isWeak) { 876c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall llvm::Value *ClassName = CGM.GetAddrOfConstantCString(Name); 87741d63ed274d1bf7ba7459f218c8f6a385fc5c6d6David Chisnall // With the incompatible ABI, this will need to be replaced with a direct 87841d63ed274d1bf7ba7459f218c8f6a385fc5c6d6David Chisnall // reference to the class symbol. For the compatible nonfragile ABI we are 87941d63ed274d1bf7ba7459f218c8f6a385fc5c6d6David Chisnall // still performing this lookup at run time but emitting the symbol for the 88041d63ed274d1bf7ba7459f218c8f6a385fc5c6d6David Chisnall // class externally so that we can make the switch later. 881c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall // 882c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall // Libobjc2 contains an LLVM pass that replaces calls to objc_lookup_class 883c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall // with memoized versions or with static references if it's safe to do so. 884d3fc7296ae95353173bae25ee4dd3ecf4d6dced1David Chisnall if (!isWeak) 885d3fc7296ae95353173bae25ee4dd3ecf4d6dced1David Chisnall EmitClassRef(Name); 886ddb2a3d55a24a1dbdf9152621642d9a4b4fc2f61Daniel Dunbar ClassName = Builder.CreateStructGEP(ClassName, 0); 887ddb2a3d55a24a1dbdf9152621642d9a4b4fc2f61Daniel Dunbar 88820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ClassLookupFn = 889da549e8995c447542d5631b8b67fcc3a9582797aJay Foad CGM.CreateRuntimeFunction(llvm::FunctionType::get(IdTy, PtrToInt8Ty, true), 89026c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian "objc_lookup_class"); 89120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return Builder.CreateCall(ClassLookupFn, ClassName); 892391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner} 893391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner 894c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall// This has to perform the lookup every time, since posing and related 895c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall// techniques can modify the name -> class mapping. 896c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnallllvm::Value *CGObjCGNU::GetClass(CGBuilderTy &Builder, 897c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall const ObjCInterfaceDecl *OID) { 898d3fc7296ae95353173bae25ee4dd3ecf4d6dced1David Chisnall return GetClassNamed(Builder, OID->getNameAsString(), OID->isWeakImported()); 899c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall} 900c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnallllvm::Value *CGObjCGNU::EmitNSAutoreleasePoolClassRef(CGBuilderTy &Builder) { 901d3fc7296ae95353173bae25ee4dd3ecf4d6dced1David Chisnall return GetClassNamed(Builder, "NSAutoreleasePool", false); 902c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall} 903c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall 90403b2960c14aede6ac82bdef32247094ebb72fa69Fariborz Jahanianllvm::Value *CGObjCGNU::GetSelector(CGBuilderTy &Builder, Selector Sel, 9059f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall const std::string &TypeEncoding, bool lval) { 9069f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 9075f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<TypedSelector, 2> &Types = SelectorTable[Sel]; 9089f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::GlobalAlias *SelValue = 0; 9099f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 9109f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 9115f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner for (SmallVectorImpl<TypedSelector>::iterator i = Types.begin(), 9129f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall e = Types.end() ; i!=e ; i++) { 9139f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall if (i->first == TypeEncoding) { 9149f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SelValue = i->second; 9159f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall break; 9169f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall } 9179f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall } 9189f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall if (0 == SelValue) { 919c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall SelValue = new llvm::GlobalAlias(SelectorTy, 9209f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::GlobalValue::PrivateLinkage, 9219f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall ".objc_selector_"+Sel.getAsString(), NULL, 9229f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall &TheModule); 9239f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Types.push_back(TypedSelector(TypeEncoding, SelValue)); 9249f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall } 9259f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 926c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall if (lval) { 927c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *tmp = Builder.CreateAlloca(SelValue->getType()); 928c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall Builder.CreateStore(SelValue, tmp); 929c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall return tmp; 930c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } 931c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall return SelValue; 9329f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall} 9339f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 9349f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallllvm::Value *CGObjCGNU::GetSelector(CGBuilderTy &Builder, Selector Sel, 9359f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall bool lval) { 9369f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall return GetSelector(Builder, Sel, std::string(), lval); 937df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian} 938df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian 9396d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbarllvm::Value *CGObjCGNU::GetSelector(CGBuilderTy &Builder, const ObjCMethodDecl 940df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian *Method) { 941df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian std::string SelTypes; 942df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian CGM.getContext().getObjCEncodingForMethodDecl(Method, SelTypes); 9439f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall return GetSelector(Builder, Method->getSelector(), SelTypes, false); 9448e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner} 9458e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner 946cf5abc7ba032bd35158e4d75b0bc92a482fc67e8Fariborz Jahanianllvm::Constant *CGObjCGNU::GetEHType(QualType T) { 9474e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!CGM.getLangOpts().CPlusPlus) { 9489735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall if (T->isObjCIdType() 9499735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall || T->isObjCQualifiedIdType()) { 9509735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // With the old ABI, there was only one kind of catchall, which broke 9519735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // foreign exceptions. With the new ABI, we use __objc_id_typeinfo as 9529735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // a pointer indicating object catchalls, and NULL to indicate real 9539735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // catchalls 954260611a32535c851237926bfcf78869b13c07d5bJohn McCall if (CGM.getLangOpts().ObjCRuntime.isNonFragile()) { 9559735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall return MakeConstantString("@id"); 9569735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall } else { 9579735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall return 0; 9589735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall } 9599735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall } 9609735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall 9619735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // All other types should be Objective-C interface pointer types. 9629735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall const ObjCObjectPointerType *OPT = 9639735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall T->getAs<ObjCObjectPointerType>(); 9649735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall assert(OPT && "Invalid @catch type."); 9659735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall const ObjCInterfaceDecl *IDecl = 9669735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall OPT->getObjectType()->getInterface(); 9679735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall assert(IDecl && "Invalid @catch type."); 9689735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall return MakeConstantString(IDecl->getIdentifier()->getName()); 9699735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall } 97080558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall // For Objective-C++, we want to provide the ability to catch both C++ and 97180558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall // Objective-C objects in the same function. 97280558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall 97380558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall // There's a particular fixed type info for 'id'. 97480558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall if (T->isObjCIdType() || 97580558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall T->isObjCQualifiedIdType()) { 97680558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall llvm::Constant *IDEHType = 97780558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall CGM.getModule().getGlobalVariable("__objc_id_type_info"); 97880558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall if (!IDEHType) 97980558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall IDEHType = 98080558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall new llvm::GlobalVariable(CGM.getModule(), PtrToInt8Ty, 98180558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall false, 98280558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall llvm::GlobalValue::ExternalLinkage, 98380558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall 0, "__objc_id_type_info"); 98480558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall return llvm::ConstantExpr::getBitCast(IDEHType, PtrToInt8Ty); 98580558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall } 98680558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall 98780558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall const ObjCObjectPointerType *PT = 98880558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall T->getAs<ObjCObjectPointerType>(); 98980558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall assert(PT && "Invalid @catch type."); 99080558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall const ObjCInterfaceType *IT = PT->getInterfaceType(); 99180558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall assert(IT && "Invalid @catch type."); 99280558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall std::string className = IT->getDecl()->getIdentifier()->getName(); 99380558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall 99480558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall std::string typeinfoName = "__objc_eh_typeinfo_" + className; 99580558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall 99680558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall // Return the existing typeinfo if it exists 99780558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall llvm::Constant *typeinfo = TheModule.getGlobalVariable(typeinfoName); 998acd76fe8e1b1b3fd83dac66848041629a8b06e8aDavid Chisnall if (typeinfo) 999acd76fe8e1b1b3fd83dac66848041629a8b06e8aDavid Chisnall return llvm::ConstantExpr::getBitCast(typeinfo, PtrToInt8Ty); 100080558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall 100180558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall // Otherwise create it. 100280558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall 100380558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall // vtable for gnustep::libobjc::__objc_class_type_info 100480558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall // It's quite ugly hard-coding this. Ideally we'd generate it using the host 100580558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall // platform's name mangling. 100680558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall const char *vtableName = "_ZTVN7gnustep7libobjc22__objc_class_type_infoE"; 100780558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall llvm::Constant *Vtable = TheModule.getGlobalVariable(vtableName); 100880558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall if (!Vtable) { 100980558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall Vtable = new llvm::GlobalVariable(TheModule, PtrToInt8Ty, true, 101080558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall llvm::GlobalValue::ExternalLinkage, 0, vtableName); 101180558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall } 101280558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall llvm::Constant *Two = llvm::ConstantInt::get(IntTy, 2); 1013a5c04344fa70d6eec34344760c1fe511e16f2d76Jay Foad Vtable = llvm::ConstantExpr::getGetElementPtr(Vtable, Two); 101480558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall Vtable = llvm::ConstantExpr::getBitCast(Vtable, PtrToInt8Ty); 101580558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall 101680558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall llvm::Constant *typeName = 101780558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall ExportUniqueString(className, "__objc_eh_typename_"); 101880558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall 101980558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall std::vector<llvm::Constant*> fields; 102080558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall fields.push_back(Vtable); 102180558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall fields.push_back(typeName); 102280558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall llvm::Constant *TI = 10237650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner MakeGlobal(llvm::StructType::get(PtrToInt8Ty, PtrToInt8Ty, 102480558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall NULL), fields, "__objc_eh_typeinfo_" + className, 102580558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall llvm::GlobalValue::LinkOnceODRLinkage); 102680558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall return llvm::ConstantExpr::getBitCast(TI, PtrToInt8Ty); 10275a180397870944548aaadeaebf58e415885b9489John McCall} 10285a180397870944548aaadeaebf58e415885b9489John McCall 102920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// Generate an NSConstantString object. 10300d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnallllvm::Constant *CGObjCGNU::GenerateConstantString(const StringLiteral *SL) { 103148272a078e54d501cb05edd797c54b8e82ceb520David Chisnall 10322f4eaef37476ae6891ede8ba215d0f6fd093629bBenjamin Kramer std::string Str = SL->getString().str(); 10330d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall 103448272a078e54d501cb05edd797c54b8e82ceb520David Chisnall // Look for an existing one 103548272a078e54d501cb05edd797c54b8e82ceb520David Chisnall llvm::StringMap<llvm::Constant*>::iterator old = ObjCStrings.find(Str); 103648272a078e54d501cb05edd797c54b8e82ceb520David Chisnall if (old != ObjCStrings.end()) 103748272a078e54d501cb05edd797c54b8e82ceb520David Chisnall return old->getValue(); 103848272a078e54d501cb05edd797c54b8e82ceb520David Chisnall 10394e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie StringRef StringClass = CGM.getLangOpts().ObjCConstantStringClass; 104013df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall 104113df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall if (StringClass.empty()) StringClass = "NXConstantString"; 104213df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall 104313df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall std::string Sym = "_OBJC_CLASS_"; 104413df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall Sym += StringClass; 104513df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall 104613df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall llvm::Constant *isa = TheModule.getNamedGlobal(Sym); 104713df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall 104813df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall if (!isa) 104913df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall isa = new llvm::GlobalVariable(TheModule, IdTy, /* isConstant */false, 105013df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall llvm::GlobalValue::ExternalWeakLinkage, 0, Sym); 105113df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall else if (isa->getType() != PtrToIdTy) 105213df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall isa = llvm::ConstantExpr::getBitCast(isa, PtrToIdTy); 105313df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall 105420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Ivars; 105513df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall Ivars.push_back(isa); 105613fd7e5111032f54b538dd66d035b0ccc1f82467Chris Lattner Ivars.push_back(MakeConstantString(Str)); 10574a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Ivars.push_back(llvm::ConstantInt::get(IntTy, Str.size())); 105820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ObjCStr = MakeGlobal( 105913df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall llvm::StructType::get(PtrToIdTy, PtrToInt8Ty, IntTy, NULL), 106020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Ivars, ".objc_str"); 106148272a078e54d501cb05edd797c54b8e82ceb520David Chisnall ObjCStr = llvm::ConstantExpr::getBitCast(ObjCStr, PtrToInt8Ty); 106248272a078e54d501cb05edd797c54b8e82ceb520David Chisnall ObjCStrings[Str] = ObjCStr; 106348272a078e54d501cb05edd797c54b8e82ceb520David Chisnall ConstantStrings.push_back(ObjCStr); 106420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return ObjCStr; 106520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 106620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 106720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov///Generates a message send where the super is the receiver. This is a message 106820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov///send to self with special delivery semantics indicating which class's method 106920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov///should be called. 10709f6614e3c5d34998dd5a5cc6faf0746dcd611d49David ChisnallRValue 10719f6614e3c5d34998dd5a5cc6faf0746dcd611d49David ChisnallCGObjCGNU::GenerateMessageSendSuper(CodeGenFunction &CGF, 1072ef072fd2f3347cfd857d6eb787b245b950771430John McCall ReturnValueSlot Return, 10737f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar QualType ResultType, 10747f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar Selector Sel, 1075f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar const ObjCInterfaceDecl *Class, 10767ce77920a35060f1c8dd72e541e42ce296ccd168Fariborz Jahanian bool isCategoryImpl, 1077f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar llvm::Value *Receiver, 107819cd87eb5fb3c197e631ce08fd52c446c4d4e8f1Daniel Dunbar bool IsClassMessage, 1079d6c93d703541c992e06eb9a59a2d826a30da65b2Daniel Dunbar const CallArgList &CallArgs, 1080d6c93d703541c992e06eb9a59a2d826a30da65b2Daniel Dunbar const ObjCMethodDecl *Method) { 10810bbe0cfd374d0e564c4570b5e84a77f886c32d52David Chisnall CGBuilderTy &Builder = CGF.Builder; 10824e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (CGM.getLangOpts().getGC() == LangOptions::GCOnly) { 1083ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall if (Sel == RetainSel || Sel == AutoreleaseSel) { 10840bbe0cfd374d0e564c4570b5e84a77f886c32d52David Chisnall return RValue::get(EnforceType(Builder, Receiver, 10850bbe0cfd374d0e564c4570b5e84a77f886c32d52David Chisnall CGM.getTypes().ConvertType(ResultType))); 1086ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 1087ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall if (Sel == ReleaseSel) { 1088ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall return RValue::get(0); 1089ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 1090ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 1091db831948f32217ece8410099f9982ef900c3b3c3David Chisnall 1092db831948f32217ece8410099f9982ef900c3b3c3David Chisnall llvm::Value *cmd = GetSelector(Builder, Sel); 1093db831948f32217ece8410099f9982ef900c3b3c3David Chisnall 1094b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 1095b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CallArgList ActualArgs; 1096b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 109704c9a49ee251424b11d7c4e8b1c23637684cecb6Eli Friedman ActualArgs.add(RValue::get(EnforceType(Builder, Receiver, IdTy)), ASTIdTy); 109804c9a49ee251424b11d7c4e8b1c23637684cecb6Eli Friedman ActualArgs.add(RValue::get(cmd), CGF.getContext().getObjCSelType()); 1099f85e193739c953358c865005855253af4f68a497John McCall ActualArgs.addFrom(CallArgs); 1100b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 1101de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall MessageSendInfo MSI = getMessageSendInfo(Method, ResultType, ActualArgs); 1102b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 11035efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar llvm::Value *ReceiverClass = 0; 110448e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (isCategoryImpl) { 110548e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner llvm::Constant *classLookupFunction = 0; 110648e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (IsClassMessage) { 110796e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson classLookupFunction = CGM.CreateRuntimeFunction(llvm::FunctionType::get( 1108da549e8995c447542d5631b8b67fcc3a9582797aJay Foad IdTy, PtrTy, true), "objc_get_meta_class"); 110948e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner } else { 111096e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson classLookupFunction = CGM.CreateRuntimeFunction(llvm::FunctionType::get( 1111da549e8995c447542d5631b8b67fcc3a9582797aJay Foad IdTy, PtrTy, true), "objc_get_class"); 11125efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } 1113db831948f32217ece8410099f9982ef900c3b3c3David Chisnall ReceiverClass = Builder.CreateCall(classLookupFunction, 111448e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner MakeConstantString(Class->getNameAsString())); 11155efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } else { 111648e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner // Set up global aliases for the metaclass or class pointer if they do not 111748e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner // already exist. These will are forward-references which will be set to 1118bb1c8600218b3244340331165fc7cba7bf227655Mike Stump // pointers to the class and metaclass structure created for the runtime 1119bb1c8600218b3244340331165fc7cba7bf227655Mike Stump // load function. To send a message to super, we look up the value of the 112048e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner // super_class pointer from either the class or metaclass structure. 112148e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (IsClassMessage) { 112248e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (!MetaClassPtrAlias) { 112348e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner MetaClassPtrAlias = new llvm::GlobalAlias(IdTy, 112448e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner llvm::GlobalValue::InternalLinkage, ".objc_metaclass_ref" + 112548e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner Class->getNameAsString(), NULL, &TheModule); 112648e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner } 112748e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner ReceiverClass = MetaClassPtrAlias; 112848e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner } else { 112948e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (!ClassPtrAlias) { 113048e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner ClassPtrAlias = new llvm::GlobalAlias(IdTy, 113148e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner llvm::GlobalValue::InternalLinkage, ".objc_class_ref" + 113248e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner Class->getNameAsString(), NULL, &TheModule); 113348e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner } 113448e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner ReceiverClass = ClassPtrAlias; 11355efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } 113671238f67c5df13eef19450d66b7a7ab28377192aChris Lattner } 11375efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar // Cast the pointer to a simplified version of the class structure 1138db831948f32217ece8410099f9982ef900c3b3c3David Chisnall ReceiverClass = Builder.CreateBitCast(ReceiverClass, 113996e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual( 11407650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType::get(IdTy, IdTy, NULL))); 11415efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar // Get the superclass pointer 1142db831948f32217ece8410099f9982ef900c3b3c3David Chisnall ReceiverClass = Builder.CreateStructGEP(ReceiverClass, 1); 11435efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar // Load the superclass pointer 1144db831948f32217ece8410099f9982ef900c3b3c3David Chisnall ReceiverClass = Builder.CreateLoad(ReceiverClass); 114520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Construct the structure used to look up the IMP 11467650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *ObjCSuperTy = llvm::StructType::get( 114747a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson Receiver->getType(), IdTy, NULL); 1148db831948f32217ece8410099f9982ef900c3b3c3David Chisnall llvm::Value *ObjCSuper = Builder.CreateAlloca(ObjCSuperTy); 1149b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 1150db831948f32217ece8410099f9982ef900c3b3c3David Chisnall Builder.CreateStore(Receiver, Builder.CreateStructGEP(ObjCSuper, 0)); 1151db831948f32217ece8410099f9982ef900c3b3c3David Chisnall Builder.CreateStore(ReceiverClass, Builder.CreateStructGEP(ObjCSuper, 1)); 115220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 1153c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall ObjCSuper = EnforceType(Builder, ObjCSuper, PtrToObjCSuperTy); 1154db831948f32217ece8410099f9982ef900c3b3c3David Chisnall 1155c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // Get the IMP 1156c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *imp = LookupIMPSuper(CGF, ObjCSuper, cmd); 1157de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall imp = EnforceType(Builder, imp, MSI.MessengerType); 115820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 1159dd5c98f709837e5dd3da08d44d1ce407975df2cfDavid Chisnall llvm::Value *impMD[] = { 1160dd5c98f709837e5dd3da08d44d1ce407975df2cfDavid Chisnall llvm::MDString::get(VMContext, Sel.getAsString()), 1161dd5c98f709837e5dd3da08d44d1ce407975df2cfDavid Chisnall llvm::MDString::get(VMContext, Class->getSuperClass()->getNameAsString()), 1162dd5c98f709837e5dd3da08d44d1ce407975df2cfDavid Chisnall llvm::ConstantInt::get(llvm::Type::getInt1Ty(VMContext), IsClassMessage) 1163dd5c98f709837e5dd3da08d44d1ce407975df2cfDavid Chisnall }; 11646f141659cab11109d9931d92d0988f8850778de3Jay Foad llvm::MDNode *node = llvm::MDNode::get(VMContext, impMD); 1165dd5c98f709837e5dd3da08d44d1ce407975df2cfDavid Chisnall 11664b02afcb45cd1a384de7d45f440a8be091dd500bDavid Chisnall llvm::Instruction *call; 1167de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall RValue msgRet = CGF.EmitCall(MSI.CallInfo, imp, Return, ActualArgs, 0, &call); 11684b02afcb45cd1a384de7d45f440a8be091dd500bDavid Chisnall call->setMetadata(msgSendMDKind, node); 11694b02afcb45cd1a384de7d45f440a8be091dd500bDavid Chisnall return msgRet; 117020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 117120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 11721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// Generate code for a message send expression. 11739f6614e3c5d34998dd5a5cc6faf0746dcd611d49David ChisnallRValue 11749f6614e3c5d34998dd5a5cc6faf0746dcd611d49David ChisnallCGObjCGNU::GenerateMessageSend(CodeGenFunction &CGF, 1175ef072fd2f3347cfd857d6eb787b245b950771430John McCall ReturnValueSlot Return, 11767f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar QualType ResultType, 11777f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar Selector Sel, 1178f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar llvm::Value *Receiver, 1179df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian const CallArgList &CallArgs, 1180c6cd5fd3eae71f8841504a396563343cfaaf503eDavid Chisnall const ObjCInterfaceDecl *Class, 1181df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian const ObjCMethodDecl *Method) { 11820bbe0cfd374d0e564c4570b5e84a77f886c32d52David Chisnall CGBuilderTy &Builder = CGF.Builder; 11830bbe0cfd374d0e564c4570b5e84a77f886c32d52David Chisnall 1184664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // Strip out message sends to retain / release in GC mode 11854e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (CGM.getLangOpts().getGC() == LangOptions::GCOnly) { 1186ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall if (Sel == RetainSel || Sel == AutoreleaseSel) { 11870bbe0cfd374d0e564c4570b5e84a77f886c32d52David Chisnall return RValue::get(EnforceType(Builder, Receiver, 11880bbe0cfd374d0e564c4570b5e84a77f886c32d52David Chisnall CGM.getTypes().ConvertType(ResultType))); 1189ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 1190ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall if (Sel == ReleaseSel) { 1191ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall return RValue::get(0); 1192ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 1193ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 1194664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall 1195664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // If the return type is something that goes in an integer register, the 1196664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // runtime will handle 0 returns. For other cases, we fill in the 0 value 1197664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // ourselves. 1198664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // 1199664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // The language spec says the result of this kind of message send is 1200664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // undefined, but lots of people seem to have forgotten to read that 1201664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // paragraph and insist on sending messages to nil that have structure 1202664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // returns. With GCC, this generates a random return value (whatever happens 1203664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // to be on the stack / in those registers at the time) on most platforms, 1204c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // and generates an illegal instruction trap on SPARC. With LLVM it corrupts 1205c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // the stack. 1206c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall bool isPointerSizedReturn = (ResultType->isAnyPointerType() || 1207c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall ResultType->isIntegralOrEnumerationType() || ResultType->isVoidType()); 1208664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall 1209664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::BasicBlock *startBB = 0; 1210664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::BasicBlock *messageBB = 0; 1211a54da05098aff1ca992f5292f3f6a39ec3cef31eDavid Chisnall llvm::BasicBlock *continueBB = 0; 1212664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall 1213664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall if (!isPointerSizedReturn) { 1214664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall startBB = Builder.GetInsertBlock(); 1215664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall messageBB = CGF.createBasicBlock("msgSend"); 1216a54da05098aff1ca992f5292f3f6a39ec3cef31eDavid Chisnall continueBB = CGF.createBasicBlock("continue"); 1217664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall 1218664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::Value *isNil = Builder.CreateICmpEQ(Receiver, 1219664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::Constant::getNullValue(Receiver->getType())); 1220a54da05098aff1ca992f5292f3f6a39ec3cef31eDavid Chisnall Builder.CreateCondBr(isNil, continueBB, messageBB); 1221664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall CGF.EmitBlock(messageBB); 1222664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall } 1223664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall 12240f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall IdTy = cast<llvm::PointerType>(CGM.getTypes().ConvertType(ASTIdTy)); 1225df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian llvm::Value *cmd; 1226df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian if (Method) 1227d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian cmd = GetSelector(Builder, Method); 1228df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian else 1229d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian cmd = GetSelector(Builder, Sel); 1230c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall cmd = EnforceType(Builder, cmd, SelectorTy); 1231c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall Receiver = EnforceType(Builder, Receiver, IdTy); 1232c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 1233c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *impMD[] = { 1234c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::MDString::get(VMContext, Sel.getAsString()), 1235c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::MDString::get(VMContext, Class ? Class->getNameAsString() :""), 1236c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::ConstantInt::get(llvm::Type::getInt1Ty(VMContext), Class!=0) 1237c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall }; 12386f141659cab11109d9931d92d0988f8850778de3Jay Foad llvm::MDNode *node = llvm::MDNode::get(VMContext, impMD); 1239b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 1240c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall CallArgList ActualArgs; 124104c9a49ee251424b11d7c4e8b1c23637684cecb6Eli Friedman ActualArgs.add(RValue::get(Receiver), ASTIdTy); 124204c9a49ee251424b11d7c4e8b1c23637684cecb6Eli Friedman ActualArgs.add(RValue::get(cmd), CGF.getContext().getObjCSelType()); 1243f85e193739c953358c865005855253af4f68a497John McCall ActualArgs.addFrom(CallArgs); 1244de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall 1245de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall MessageSendInfo MSI = getMessageSendInfo(Method, ResultType, ActualArgs); 1246de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall 124789c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall // Get the IMP to call 124889c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall llvm::Value *imp; 124989c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall 125089c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall // If we have non-legacy dispatch specified, we try using the objc_msgSend() 125189c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall // functions. These are not supported on all platforms (or all runtimes on a 125289c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall // given platform), so we 125389c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall switch (CGM.getCodeGenOpts().getObjCDispatchMethod()) { 125489c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall case CodeGenOptions::Legacy: 125589c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall imp = LookupIMP(CGF, Receiver, cmd, node); 125689c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall break; 125789c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall case CodeGenOptions::Mixed: 125889c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall case CodeGenOptions::NonLegacy: 12596f3887ec3652482d2e0e8959d8a89b785330b0b2David Chisnall if (CGM.ReturnTypeUsesFPRet(ResultType)) { 12606f3887ec3652482d2e0e8959d8a89b785330b0b2David Chisnall imp = CGM.CreateRuntimeFunction(llvm::FunctionType::get(IdTy, IdTy, true), 12616f3887ec3652482d2e0e8959d8a89b785330b0b2David Chisnall "objc_msgSend_fpret"); 1262de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall } else if (CGM.ReturnTypeUsesSRet(MSI.CallInfo)) { 126389c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall // The actual types here don't matter - we're going to bitcast the 126489c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall // function anyway 126589c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall imp = CGM.CreateRuntimeFunction(llvm::FunctionType::get(IdTy, IdTy, true), 126689c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall "objc_msgSend_stret"); 126789c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall } else { 126889c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall imp = CGM.CreateRuntimeFunction(llvm::FunctionType::get(IdTy, IdTy, true), 126989c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall "objc_msgSend"); 127089c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall } 127189c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall } 127289c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall 1273403bc3f85f3b3461b73abdd9c632980bf95f34bdDavid Chisnall // Reset the receiver in case the lookup modified it 1274403bc3f85f3b3461b73abdd9c632980bf95f34bdDavid Chisnall ActualArgs[0] = CallArg(RValue::get(Receiver), ASTIdTy, false); 127589c300400b0b75d879da88f81c97a46feb0675beDavid Chisnall 1276de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall imp = EnforceType(Builder, imp, MSI.MessengerType); 127763e742bed90aab2e8e778e48fbbd4bce766b4373David Chisnall 12784b02afcb45cd1a384de7d45f440a8be091dd500bDavid Chisnall llvm::Instruction *call; 1279de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall RValue msgRet = CGF.EmitCall(MSI.CallInfo, imp, Return, ActualArgs, 12804b02afcb45cd1a384de7d45f440a8be091dd500bDavid Chisnall 0, &call); 12814b02afcb45cd1a384de7d45f440a8be091dd500bDavid Chisnall call->setMetadata(msgSendMDKind, node); 1282664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall 1283a54da05098aff1ca992f5292f3f6a39ec3cef31eDavid Chisnall 1284664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall if (!isPointerSizedReturn) { 1285a54da05098aff1ca992f5292f3f6a39ec3cef31eDavid Chisnall messageBB = CGF.Builder.GetInsertBlock(); 1286a54da05098aff1ca992f5292f3f6a39ec3cef31eDavid Chisnall CGF.Builder.CreateBr(continueBB); 1287a54da05098aff1ca992f5292f3f6a39ec3cef31eDavid Chisnall CGF.EmitBlock(continueBB); 1288664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall if (msgRet.isScalar()) { 1289664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::Value *v = msgRet.getScalarVal(); 1290bbf3bacb3e0c1ebb3e8a4a8b1330404a7e379315Jay Foad llvm::PHINode *phi = Builder.CreatePHI(v->getType(), 2); 1291664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi->addIncoming(v, messageBB); 1292664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi->addIncoming(llvm::Constant::getNullValue(v->getType()), startBB); 1293664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall msgRet = RValue::get(phi); 1294664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall } else if (msgRet.isAggregate()) { 1295664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::Value *v = msgRet.getAggregateAddr(); 1296bbf3bacb3e0c1ebb3e8a4a8b1330404a7e379315Jay Foad llvm::PHINode *phi = Builder.CreatePHI(v->getType(), 2); 12972acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::PointerType *RetTy = cast<llvm::PointerType>(v->getType()); 1298866163bf6c66211a9b4d5ba160ac02de04ce4be6David Chisnall llvm::AllocaInst *NullVal = 1299866163bf6c66211a9b4d5ba160ac02de04ce4be6David Chisnall CGF.CreateTempAlloca(RetTy->getElementType(), "null"); 1300664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall CGF.InitTempAlloca(NullVal, 1301664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::Constant::getNullValue(RetTy->getElementType())); 1302664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi->addIncoming(v, messageBB); 1303664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi->addIncoming(NullVal, startBB); 1304664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall msgRet = RValue::getAggregate(phi); 1305664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall } else /* isComplex() */ { 1306664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall std::pair<llvm::Value*,llvm::Value*> v = msgRet.getComplexVal(); 1307bbf3bacb3e0c1ebb3e8a4a8b1330404a7e379315Jay Foad llvm::PHINode *phi = Builder.CreatePHI(v.first->getType(), 2); 1308664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi->addIncoming(v.first, messageBB); 1309664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi->addIncoming(llvm::Constant::getNullValue(v.first->getType()), 1310664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall startBB); 1311bbf3bacb3e0c1ebb3e8a4a8b1330404a7e379315Jay Foad llvm::PHINode *phi2 = Builder.CreatePHI(v.second->getType(), 2); 1312664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi2->addIncoming(v.second, messageBB); 1313664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi2->addIncoming(llvm::Constant::getNullValue(v.second->getType()), 1314664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall startBB); 1315664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall msgRet = RValue::getComplex(phi, phi2); 1316664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall } 1317664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall } 1318664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall return msgRet; 131920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 132020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 13211eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// Generates a MethodList. Used in construction of a objc_class and 132220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// objc_category structures. 1323795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendlingllvm::Constant *CGObjCGNU:: 1324795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill WendlingGenerateMethodList(const StringRef &ClassName, 1325795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling const StringRef &CategoryName, 1326795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling ArrayRef<Selector> MethodSels, 1327795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling ArrayRef<llvm::Constant *> MethodTypes, 1328795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling bool isClassMethodList) { 13290f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall if (MethodSels.empty()) 13300f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall return NULLPtr; 13311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Get the method structure type. 13327650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *ObjCMethodTy = llvm::StructType::get( 133320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // Really a selector, but the runtime creates it us. 133420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // Method types 1335c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall IMPTy, //Method pointer 133620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 133720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Methods; 133820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 133920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (unsigned int i = 0, e = MethodTypes.size(); i < e; ++i) { 134020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 13419f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::Constant *Method = 134220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov TheModule.getFunction(SymbolNameForMethod(ClassName, CategoryName, 13439f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall MethodSels[i], 13449f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall isClassMethodList)); 13459f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall assert(Method && "Can't generate metadata for method that doesn't exist"); 13469f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::Constant *C = MakeConstantString(MethodSels[i].getAsString()); 13479f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Elements.push_back(C); 13489f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Elements.push_back(MethodTypes[i]); 13499f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Method = llvm::ConstantExpr::getBitCast(Method, 1350c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall IMPTy); 13519f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Elements.push_back(Method); 13529f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Methods.push_back(llvm::ConstantStruct::get(ObjCMethodTy, Elements)); 135320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 135420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 135520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Array of method structures 135696e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *ObjCMethodArrayTy = llvm::ArrayType::get(ObjCMethodTy, 13571e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian Methods.size()); 13587db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson llvm::Constant *MethodArray = llvm::ConstantArray::get(ObjCMethodArrayTy, 1359fba676396703e87a5034e5f308aa30a633468f66Chris Lattner Methods); 136020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 136120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Structure containing list pointer, array and array count 1362c1c20114a401e503c07d68c47e0728bb063f35c8Chris Lattner llvm::StructType *ObjCMethodListTy = llvm::StructType::create(VMContext); 13639cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::Type *NextPtrTy = llvm::PointerType::getUnqual(ObjCMethodListTy); 13649cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner ObjCMethodListTy->setBody( 13651eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump NextPtrTy, 13661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump IntTy, 136720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ObjCMethodArrayTy, 136820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 136920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 137020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.clear(); 137103e205031b08669f05c41eed5b896fc94c4a12bbOwen Anderson Methods.push_back(llvm::ConstantPointerNull::get( 137296e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(ObjCMethodListTy))); 1373917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall Methods.push_back(llvm::ConstantInt::get(Int32Ty, MethodTypes.size())); 137420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.push_back(MethodArray); 13751eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 137620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an instance of the structure 137720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ObjCMethodListTy, Methods, ".objc_method_list"); 137820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 137920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 138020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// Generates an IvarList. Used in construction of a objc_class. 1381795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendlingllvm::Constant *CGObjCGNU:: 1382795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill WendlingGenerateIvarList(ArrayRef<llvm::Constant *> IvarNames, 1383795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling ArrayRef<llvm::Constant *> IvarTypes, 1384795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling ArrayRef<llvm::Constant *> IvarOffsets) { 13851804463ee790ac3cc73f72597ccb38b983f7d263David Chisnall if (IvarNames.size() == 0) 13861804463ee790ac3cc73f72597ccb38b983f7d263David Chisnall return NULLPtr; 13871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Get the method structure type. 13887650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *ObjCIvarTy = llvm::StructType::get( 138920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 139020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 139120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IntTy, 139220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 139320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Ivars; 139420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 139520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (unsigned int i = 0, e = IvarNames.size() ; i < e ; i++) { 139620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 13978a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall Elements.push_back(IvarNames[i]); 13988a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall Elements.push_back(IvarTypes[i]); 139920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(IvarOffsets[i]); 140008e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson Ivars.push_back(llvm::ConstantStruct::get(ObjCIvarTy, Elements)); 140120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 140220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 140320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Array of method structures 140496e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *ObjCIvarArrayTy = llvm::ArrayType::get(ObjCIvarTy, 140520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IvarNames.size()); 140620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 14071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 140820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 14094a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Elements.push_back(llvm::ConstantInt::get(IntTy, (int)IvarNames.size())); 14107db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson Elements.push_back(llvm::ConstantArray::get(ObjCIvarArrayTy, Ivars)); 141120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Structure containing array and array count 14127650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *ObjCIvarListTy = llvm::StructType::get(IntTy, 141320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ObjCIvarArrayTy, 141420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 141520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 141620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an instance of the structure 141720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ObjCIvarListTy, Elements, ".objc_ivar_list"); 14180f984268b05edab2cc555a427c441baa9c252658Chris Lattner} 14190f984268b05edab2cc555a427c441baa9c252658Chris Lattner 142020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// Generate a class structure 142120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::GenerateClassStructure( 142220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MetaClass, 142320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SuperClass, 142420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov unsigned info, 1425d002cc6fc5b72bf00e3b7b4571ccf0f23c789b4bChris Lattner const char *Name, 142620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Version, 142720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *InstanceSize, 142820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *IVars, 142920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Methods, 1430d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *Protocols, 1431d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *IvarOffsets, 14328c757f9ea33dccff4da7810e0c1bda59c19ddc9aDavid Chisnall llvm::Constant *Properties, 1433917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::Constant *StrongIvarBitmap, 1434917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::Constant *WeakIvarBitmap, 14358c757f9ea33dccff4da7810e0c1bda59c19ddc9aDavid Chisnall bool isMeta) { 143620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Set up the class structure 143720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Note: Several of these are char*s when they should be ids. This is 143820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // because the runtime performs this translation on load. 1439d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // 1440d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Fields marked New ABI are part of the GNUstep runtime. We emit them 1441d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // anyway; the classes will still work with the GNU runtime, they will just 1442d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // be ignored. 14437650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *ClassTy = llvm::StructType::get( 144413df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall PtrToInt8Ty, // isa 144520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // super_class 144620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // name 144720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov LongTy, // version 144820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov LongTy, // info 144920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov LongTy, // instance_size 145020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IVars->getType(), // ivars 145120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods->getType(), // methods 14521eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // These are all filled in by the runtime, so we pretend 145320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // dtable 145420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // subclass_list 145520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // sibling_class 145620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // protocols 145720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // gc_object_type 1458d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // New ABI: 1459d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian LongTy, // abi_version 1460d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian IvarOffsets->getType(), // ivar_offsets 1461d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Properties->getType(), // properties 14629d06ba82d8afb1cf01235f38f350ce5ad0c15444David Chisnall IntPtrTy, // strong_pointers 14639d06ba82d8afb1cf01235f38f350ce5ad0c15444David Chisnall IntPtrTy, // weak_pointers 146420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 14654a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson llvm::Constant *Zero = llvm::ConstantInt::get(LongTy, 0); 146620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Fill in the structure 146720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 14683c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getBitCast(MetaClass, PtrToInt8Ty)); 146920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(SuperClass); 1470d002cc6fc5b72bf00e3b7b4571ccf0f23c789b4bChris Lattner Elements.push_back(MakeConstantString(Name, ".class_name")); 147120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(Zero); 14724a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Elements.push_back(llvm::ConstantInt::get(LongTy, info)); 147305f3a507bb53ed2bd5573d551a26654a604187ebDavid Chisnall if (isMeta) { 147405f3a507bb53ed2bd5573d551a26654a604187ebDavid Chisnall llvm::TargetData td(&TheModule); 1475e0afc892e75f526f7ecce7dd152d946337632efeKen Dyck Elements.push_back( 1476e0afc892e75f526f7ecce7dd152d946337632efeKen Dyck llvm::ConstantInt::get(LongTy, 1477e0afc892e75f526f7ecce7dd152d946337632efeKen Dyck td.getTypeSizeInBits(ClassTy) / 1478e0afc892e75f526f7ecce7dd152d946337632efeKen Dyck CGM.getContext().getCharWidth())); 147905f3a507bb53ed2bd5573d551a26654a604187ebDavid Chisnall } else 148005f3a507bb53ed2bd5573d551a26654a604187ebDavid Chisnall Elements.push_back(InstanceSize); 148120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(IVars); 148220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(Methods); 1483d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(NULLPtr); 1484d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(NULLPtr); 1485d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(NULLPtr); 14863c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getBitCast(Protocols, PtrTy)); 1487d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(NULLPtr); 1488917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall Elements.push_back(llvm::ConstantInt::get(LongTy, 1)); 1489d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(IvarOffsets); 1490d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(Properties); 1491917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall Elements.push_back(StrongIvarBitmap); 1492917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall Elements.push_back(WeakIvarBitmap); 149320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an instance of the structure 149441d63ed274d1bf7ba7459f218c8f6a385fc5c6d6David Chisnall // This is now an externally visible symbol, so that we can speed up class 149513df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall // messages in the next ABI. We may already have some weak references to 149613df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall // this, so check and fix them properly. 149713df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall std::string ClassSym((isMeta ? "_OBJC_METACLASS_": "_OBJC_CLASS_") + 149813df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall std::string(Name)); 149913df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall llvm::GlobalVariable *ClassRef = TheModule.getNamedGlobal(ClassSym); 150013df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall llvm::Constant *Class = MakeGlobal(ClassTy, Elements, ClassSym, 150113df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall llvm::GlobalValue::ExternalLinkage); 150213df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall if (ClassRef) { 150313df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall ClassRef->replaceAllUsesWith(llvm::ConstantExpr::getBitCast(Class, 150413df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall ClassRef->getType())); 150513df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall ClassRef->removeFromParent(); 150613df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall Class->setName(ClassSym); 150713df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall } 150813df6f6e2e6adfb9933ba1a16802d35942e26a5cDavid Chisnall return Class; 150920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 151020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 1511795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendlingllvm::Constant *CGObjCGNU:: 1512795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill WendlingGenerateProtocolMethodList(ArrayRef<llvm::Constant *> MethodNames, 1513795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendling ArrayRef<llvm::Constant *> MethodTypes) { 15141eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Get the method structure type. 15157650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *ObjCMethodDescTy = llvm::StructType::get( 151620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // Really a selector, but the runtime does the casting for us. 151720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 151820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 151920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Methods; 152020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 152120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (unsigned int i = 0, e = MethodTypes.size() ; i < e ; i++) { 152220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 15231eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Elements.push_back(MethodNames[i]); 15248a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall Elements.push_back(MethodTypes[i]); 152508e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson Methods.push_back(llvm::ConstantStruct::get(ObjCMethodDescTy, Elements)); 152620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 152796e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *ObjCMethodArrayTy = llvm::ArrayType::get(ObjCMethodDescTy, 152820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov MethodNames.size()); 15297db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson llvm::Constant *Array = llvm::ConstantArray::get(ObjCMethodArrayTy, 1530bb1c8600218b3244340331165fc7cba7bf227655Mike Stump Methods); 15317650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *ObjCMethodDescListTy = llvm::StructType::get( 153220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IntTy, ObjCMethodArrayTy, NULL); 153320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.clear(); 15344a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Methods.push_back(llvm::ConstantInt::get(IntTy, MethodNames.size())); 153520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.push_back(Array); 153620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ObjCMethodDescListTy, Methods, ".objc_method_list"); 153720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 1538bb1c8600218b3244340331165fc7cba7bf227655Mike Stump 153920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// Create the protocol list structure used in classes, categories and so on 1540795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendlingllvm::Constant *CGObjCGNU::GenerateProtocolList(ArrayRef<std::string>Protocols){ 154196e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *ProtocolArrayTy = llvm::ArrayType::get(PtrToInt8Ty, 154220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Protocols.size()); 15437650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *ProtocolListTy = llvm::StructType::get( 154420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, //Should be a recurisve pointer, but it's always NULL here. 15458fac25d33b13e25f512dd921d4d5a4b565f5d175David Chisnall SizeTy, 154620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ProtocolArrayTy, 154720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 15481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump std::vector<llvm::Constant*> Elements; 154920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (const std::string *iter = Protocols.begin(), *endIter = Protocols.end(); 155020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter != endIter ; iter++) { 1551ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall llvm::Constant *protocol = 0; 1552ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall llvm::StringMap<llvm::Constant*>::iterator value = 1553ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall ExistingProtocols.find(*iter); 1554ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall if (value == ExistingProtocols.end()) { 1555f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian protocol = GenerateEmptyProtocol(*iter); 1556ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall } else { 1557ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall protocol = value->getValue(); 1558ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall } 15593c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::Constant *Ptr = llvm::ConstantExpr::getBitCast(protocol, 1560a1cf15f4680e5cf39e72e28c5ea854fcba792e84Owen Anderson PtrToInt8Ty); 156120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(Ptr); 156220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 15637db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson llvm::Constant * ProtocolArray = llvm::ConstantArray::get(ProtocolArrayTy, 156420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements); 156520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 156620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 15674a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Elements.push_back(llvm::ConstantInt::get(LongTy, Protocols.size())); 156820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ProtocolArray); 156920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ProtocolListTy, Elements, ".objc_protocol_list"); 157020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 157120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 15721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumpllvm::Value *CGObjCGNU::GenerateProtocolRef(CGBuilderTy &Builder, 1573af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar const ObjCProtocolDecl *PD) { 1574f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::Value *protocol = ExistingProtocols[PD->getNameAsString()]; 15752acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Type *T = 1576f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian CGM.getTypes().ConvertType(CGM.getContext().getObjCProtoType()); 157796e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson return Builder.CreateBitCast(protocol, llvm::PointerType::getUnqual(T)); 1578f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian} 1579f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian 1580f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanianllvm::Constant *CGObjCGNU::GenerateEmptyProtocol( 1581f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian const std::string &ProtocolName) { 15825f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<std::string, 0> EmptyStringVector; 15835f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 0> EmptyConstantVector; 1584f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian 1585f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::Constant *ProtocolList = GenerateProtocolList(EmptyStringVector); 1586d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *MethodList = 1587f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian GenerateProtocolMethodList(EmptyConstantVector, EmptyConstantVector); 1588f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian // Protocols are objects containing lists of the methods implemented and 1589f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian // protocols adopted. 15907650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *ProtocolTy = llvm::StructType::get(IdTy, 1591f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian PtrToInt8Ty, 1592f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian ProtocolList->getType(), 1593d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MethodList->getType(), 1594d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MethodList->getType(), 1595d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MethodList->getType(), 1596d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MethodList->getType(), 1597f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian NULL); 15981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump std::vector<llvm::Constant*> Elements; 1599f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian // The isa pointer must be set to a magic number so the runtime knows it's 1600f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian // the correct layout. 16013c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getIntToPtr( 1602917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::ConstantInt::get(Int32Ty, ProtocolVersion), IdTy)); 1603f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian Elements.push_back(MakeConstantString(ProtocolName, ".objc_protocol_name")); 1604f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian Elements.push_back(ProtocolList); 1605d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(MethodList); 1606d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(MethodList); 1607d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(MethodList); 1608d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(MethodList); 1609f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian return MakeGlobal(ProtocolTy, Elements, ".objc_protocol"); 161020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 161120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 1612af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbarvoid CGObjCGNU::GenerateProtocol(const ObjCProtocolDecl *PD) { 1613af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar ASTContext &Context = CGM.getContext(); 16148ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string ProtocolName = PD->getNameAsString(); 16151d784b277cdfd4eba03680715d2a082b3f28d295Douglas Gregor 16161d784b277cdfd4eba03680715d2a082b3f28d295Douglas Gregor // Use the protocol definition, if there is one. 16171d784b277cdfd4eba03680715d2a082b3f28d295Douglas Gregor if (const ObjCProtocolDecl *Def = PD->getDefinition()) 16181d784b277cdfd4eba03680715d2a082b3f28d295Douglas Gregor PD = Def; 16191d784b277cdfd4eba03680715d2a082b3f28d295Douglas Gregor 16205f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<std::string, 16> Protocols; 1621af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar for (ObjCProtocolDecl::protocol_iterator PI = PD->protocol_begin(), 1622af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar E = PD->protocol_end(); PI != E; ++PI) 1623d9d22dd9c94618490dbffb0e2caf222530ca39d3Chris Lattner Protocols.push_back((*PI)->getNameAsString()); 16245f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> InstanceMethodNames; 16255f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> InstanceMethodTypes; 16265f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> OptionalInstanceMethodNames; 16275f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> OptionalInstanceMethodTypes; 162817945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis for (ObjCProtocolDecl::instmeth_iterator iter = PD->instmeth_begin(), 162917945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis E = PD->instmeth_end(); iter != E; iter++) { 1630af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar std::string TypeStr; 1631af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar Context.getObjCEncodingForMethodDecl(*iter, TypeStr); 1632d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if ((*iter)->getImplementationControl() == ObjCMethodDecl::Optional) { 1633d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian InstanceMethodNames.push_back( 1634d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MakeConstantString((*iter)->getSelector().getAsString())); 1635d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian InstanceMethodTypes.push_back(MakeConstantString(TypeStr)); 1636d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 1637d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalInstanceMethodNames.push_back( 1638d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MakeConstantString((*iter)->getSelector().getAsString())); 1639d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalInstanceMethodTypes.push_back(MakeConstantString(TypeStr)); 1640d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1641af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar } 1642af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar // Collect information about class methods: 16435f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> ClassMethodNames; 16445f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> ClassMethodTypes; 16455f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> OptionalClassMethodNames; 16465f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> OptionalClassMethodTypes; 16471eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump for (ObjCProtocolDecl::classmeth_iterator 164817945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = PD->classmeth_begin(), endIter = PD->classmeth_end(); 164917945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter != endIter ; iter++) { 1650af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar std::string TypeStr; 1651af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar Context.getObjCEncodingForMethodDecl((*iter),TypeStr); 1652d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if ((*iter)->getImplementationControl() == ObjCMethodDecl::Optional) { 1653d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ClassMethodNames.push_back( 1654d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MakeConstantString((*iter)->getSelector().getAsString())); 1655d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ClassMethodTypes.push_back(MakeConstantString(TypeStr)); 1656d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 1657d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalClassMethodNames.push_back( 1658d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MakeConstantString((*iter)->getSelector().getAsString())); 1659d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalClassMethodTypes.push_back(MakeConstantString(TypeStr)); 1660d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1661af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar } 166220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 166320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ProtocolList = GenerateProtocolList(Protocols); 166420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *InstanceMethodList = 166520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov GenerateProtocolMethodList(InstanceMethodNames, InstanceMethodTypes); 166620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ClassMethodList = 166720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov GenerateProtocolMethodList(ClassMethodNames, ClassMethodTypes); 1668d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *OptionalInstanceMethodList = 1669d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian GenerateProtocolMethodList(OptionalInstanceMethodNames, 1670d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalInstanceMethodTypes); 1671d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *OptionalClassMethodList = 1672d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian GenerateProtocolMethodList(OptionalClassMethodNames, 1673d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalClassMethodTypes); 1674d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1675d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Property metadata: name, attributes, isSynthesized, setter name, setter 1676d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // types, getter name, getter types. 1677d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // The isSynthesized value is always set to 0 in a protocol. It exists to 1678d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // simplify the runtime library by allowing it to use the same data 1679d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // structures for protocol metadata everywhere. 16807650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *PropertyMetadataTy = llvm::StructType::get( 1681d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrToInt8Ty, Int8Ty, Int8Ty, PtrToInt8Ty, PtrToInt8Ty, PtrToInt8Ty, 1682d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrToInt8Ty, NULL); 1683d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> Properties; 1684d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> OptionalProperties; 1685d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1686d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Add all of the property methods need adding to the method list and to the 1687d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // property metadata list. 1688d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian for (ObjCContainerDecl::prop_iterator 1689d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian iter = PD->prop_begin(), endIter = PD->prop_end(); 1690d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian iter != endIter ; iter++) { 1691d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> Fields; 1692581deb3da481053c4993c7600f97acf7768caac5David Blaikie ObjCPropertyDecl *property = *iter; 1693d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1694d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(MakeConstantString(property->getNameAsString())); 1695d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(llvm::ConstantInt::get(Int8Ty, 1696d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian property->getPropertyAttributes())); 1697d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(llvm::ConstantInt::get(Int8Ty, 0)); 1698d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if (ObjCMethodDecl *getter = property->getGetterMethodDecl()) { 1699d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::string TypeStr; 1700d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Context.getObjCEncodingForMethodDecl(getter,TypeStr); 1701d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *TypeEncoding = MakeConstantString(TypeStr); 1702d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian InstanceMethodTypes.push_back(TypeEncoding); 1703d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(MakeConstantString(getter->getSelector().getAsString())); 1704d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(TypeEncoding); 1705d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 1706d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1707d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1708d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1709d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if (ObjCMethodDecl *setter = property->getSetterMethodDecl()) { 1710d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::string TypeStr; 1711d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Context.getObjCEncodingForMethodDecl(setter,TypeStr); 1712d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *TypeEncoding = MakeConstantString(TypeStr); 1713d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian InstanceMethodTypes.push_back(TypeEncoding); 1714d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(MakeConstantString(setter->getSelector().getAsString())); 1715d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(TypeEncoding); 1716d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 1717d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1718d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1719d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1720d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if (property->getPropertyImplementation() == ObjCPropertyDecl::Optional) { 1721d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalProperties.push_back(llvm::ConstantStruct::get(PropertyMetadataTy, Fields)); 1722d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 1723d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Properties.push_back(llvm::ConstantStruct::get(PropertyMetadataTy, Fields)); 1724d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1725d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1726d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *PropertyArray = llvm::ConstantArray::get( 1727d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ArrayType::get(PropertyMetadataTy, Properties.size()), Properties); 1728d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant* PropertyListInitFields[] = 1729d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian {llvm::ConstantInt::get(IntTy, Properties.size()), NULLPtr, PropertyArray}; 1730d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1731d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *PropertyListInit = 1732c5cbb909e8a27deb8f1a2b6b7bf56a96051af81aChris Lattner llvm::ConstantStruct::getAnon(PropertyListInitFields); 1733d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *PropertyList = new llvm::GlobalVariable(TheModule, 1734d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PropertyListInit->getType(), false, llvm::GlobalValue::InternalLinkage, 1735d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PropertyListInit, ".objc_property_list"); 1736d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1737d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *OptionalPropertyArray = 1738d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ConstantArray::get(llvm::ArrayType::get(PropertyMetadataTy, 1739d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalProperties.size()) , OptionalProperties); 1740d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant* OptionalPropertyListInitFields[] = { 1741d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ConstantInt::get(IntTy, OptionalProperties.size()), NULLPtr, 1742d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalPropertyArray }; 1743d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1744d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *OptionalPropertyListInit = 1745c5cbb909e8a27deb8f1a2b6b7bf56a96051af81aChris Lattner llvm::ConstantStruct::getAnon(OptionalPropertyListInitFields); 1746d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *OptionalPropertyList = new llvm::GlobalVariable(TheModule, 1747d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalPropertyListInit->getType(), false, 1748d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::GlobalValue::InternalLinkage, OptionalPropertyListInit, 1749d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ".objc_property_list"); 1750d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 175120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Protocols are objects containing lists of the methods implemented and 175220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // protocols adopted. 17537650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *ProtocolTy = llvm::StructType::get(IdTy, 175420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 175520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ProtocolList->getType(), 175620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov InstanceMethodList->getType(), 175720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ClassMethodList->getType(), 1758d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalInstanceMethodList->getType(), 1759d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalClassMethodList->getType(), 1760d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PropertyList->getType(), 1761d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalPropertyList->getType(), 176220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 17631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump std::vector<llvm::Constant*> Elements; 176420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // The isa pointer must be set to a magic number so the runtime knows it's 176520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // the correct layout. 17663c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getIntToPtr( 1767917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::ConstantInt::get(Int32Ty, ProtocolVersion), IdTy)); 176820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(MakeConstantString(ProtocolName, ".objc_protocol_name")); 176920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ProtocolList); 177020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(InstanceMethodList); 177120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ClassMethodList); 1772d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(OptionalInstanceMethodList); 1773d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(OptionalClassMethodList); 1774d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(PropertyList); 1775d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(OptionalPropertyList); 17761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump ExistingProtocols[ProtocolName] = 17773c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::ConstantExpr::getBitCast(MakeGlobal(ProtocolTy, Elements, 177820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ".objc_protocol"), IdTy); 177920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 1780d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanianvoid CGObjCGNU::GenerateProtocolHolderCategory(void) { 1781d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Collect information about instance methods 17825f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<Selector, 1> MethodSels; 17835f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 1> MethodTypes; 1784d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1785d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> Elements; 1786d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian const std::string ClassName = "__ObjC_Protocol_Holder_Ugly_Hack"; 1787d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian const std::string CategoryName = "AnotherHack"; 1788d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(MakeConstantString(CategoryName)); 1789d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(MakeConstantString(ClassName)); 1790d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Instance method list 1791d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(llvm::ConstantExpr::getBitCast(GenerateMethodList( 1792d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ClassName, CategoryName, MethodSels, MethodTypes, false), PtrTy)); 1793d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Class method list 1794d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(llvm::ConstantExpr::getBitCast(GenerateMethodList( 1795d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ClassName, CategoryName, MethodSels, MethodTypes, true), PtrTy)); 1796d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Protocol list 1797d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ArrayType *ProtocolArrayTy = llvm::ArrayType::get(PtrTy, 1798d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ExistingProtocols.size()); 17997650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *ProtocolListTy = llvm::StructType::get( 1800d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrTy, //Should be a recurisve pointer, but it's always NULL here. 18018fac25d33b13e25f512dd921d4d5a4b565f5d175David Chisnall SizeTy, 1802d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolArrayTy, 1803d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian NULL); 1804d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> ProtocolElements; 1805d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian for (llvm::StringMapIterator<llvm::Constant*> iter = 1806d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ExistingProtocols.begin(), endIter = ExistingProtocols.end(); 1807d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian iter != endIter ; iter++) { 1808d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *Ptr = llvm::ConstantExpr::getBitCast(iter->getValue(), 1809d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrTy); 1810d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements.push_back(Ptr); 1811d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1812d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant * ProtocolArray = llvm::ConstantArray::get(ProtocolArrayTy, 1813d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements); 1814d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements.clear(); 1815d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements.push_back(NULLPtr); 1816d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements.push_back(llvm::ConstantInt::get(LongTy, 1817d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ExistingProtocols.size())); 1818d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements.push_back(ProtocolArray); 1819d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(llvm::ConstantExpr::getBitCast(MakeGlobal(ProtocolListTy, 1820d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements, ".objc_protocol_list"), PtrTy)); 1821d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Categories.push_back(llvm::ConstantExpr::getBitCast( 18227650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner MakeGlobal(llvm::StructType::get(PtrToInt8Ty, PtrToInt8Ty, 1823d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrTy, PtrTy, PtrTy, NULL), Elements), PtrTy)); 1824d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian} 182520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 1826917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall/// Libobjc2 uses a bitfield representation where small(ish) bitfields are 1827917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall/// stored in a 64-bit value with the low bit set to 1 and the remaining 63 1828917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall/// bits set to their values, LSB first, while larger ones are stored in a 1829917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall/// structure of this / form: 1830917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall/// 1831917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall/// struct { int32_t length; int32_t values[length]; }; 1832917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall/// 1833917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall/// The values in the array are stored in host-endian format, with the least 1834917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall/// significant bit being assumed to come first in the bitfield. Therefore, a 1835917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall/// bitfield with the 64th bit set will be (int64_t)&{ 2, [0, 1<<31] }, while a 1836917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall/// bitfield / with the 63rd bit set will be 1<<64. 1837795b10062c2eaffae9e04241fb1a73cdbcb24a37Bill Wendlingllvm::Constant *CGObjCGNU::MakeBitField(ArrayRef<bool> bits) { 1838917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall int bitCount = bits.size(); 18399d06ba82d8afb1cf01235f38f350ce5ad0c15444David Chisnall int ptrBits = 18409d06ba82d8afb1cf01235f38f350ce5ad0c15444David Chisnall (TheModule.getPointerSize() == llvm::Module::Pointer32) ? 32 : 64; 18419d06ba82d8afb1cf01235f38f350ce5ad0c15444David Chisnall if (bitCount < ptrBits) { 1842917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall uint64_t val = 1; 1843917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall for (int i=0 ; i<bitCount ; ++i) { 1844e3c944a9f620dacb0c29d16e7d61c8e7fca10963Eli Friedman if (bits[i]) val |= 1ULL<<(i+1); 1845917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall } 18469d06ba82d8afb1cf01235f38f350ce5ad0c15444David Chisnall return llvm::ConstantInt::get(IntPtrTy, val); 1847917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall } 1848917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::SmallVector<llvm::Constant*, 8> values; 1849917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall int v=0; 1850917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall while (v < bitCount) { 1851917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall int32_t word = 0; 1852917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall for (int i=0 ; (i<32) && (v<bitCount) ; ++i) { 1853917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall if (bits[v]) word |= 1<<i; 1854917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall v++; 1855917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall } 1856917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall values.push_back(llvm::ConstantInt::get(Int32Ty, word)); 1857917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall } 1858917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::ArrayType *arrayTy = llvm::ArrayType::get(Int32Ty, values.size()); 1859917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::Constant *array = llvm::ConstantArray::get(arrayTy, values); 1860917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::Constant *fields[2] = { 1861917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::ConstantInt::get(Int32Ty, values.size()), 1862917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall array }; 1863917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::Constant *GS = MakeGlobal(llvm::StructType::get(Int32Ty, arrayTy, 1864917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall NULL), fields); 186549de5289acea91c9d224c9aadd4d527e8f9fdaffDavid Chisnall llvm::Constant *ptr = llvm::ConstantExpr::getPtrToInt(GS, IntPtrTy); 186649de5289acea91c9d224c9aadd4d527e8f9fdaffDavid Chisnall return ptr; 1867917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall} 1868917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall 18697ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbarvoid CGObjCGNU::GenerateCategory(const ObjCCategoryImplDecl *OCD) { 18708ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string ClassName = OCD->getClassInterface()->getNameAsString(); 18718ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string CategoryName = OCD->getNameAsString(); 18727ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about instance methods 18735f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<Selector, 16> InstanceMethodSels; 18745f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> InstanceMethodTypes; 1875653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor for (ObjCCategoryImplDecl::instmeth_iterator 187617945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = OCD->instmeth_begin(), endIter = OCD->instmeth_end(); 1877653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter != endIter ; iter++) { 18787ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar InstanceMethodSels.push_back((*iter)->getSelector()); 18797ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 18807ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar CGM.getContext().getObjCEncodingForMethodDecl(*iter,TypeStr); 18818a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall InstanceMethodTypes.push_back(MakeConstantString(TypeStr)); 18827ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 18837ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 18847ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about class methods 18855f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<Selector, 16> ClassMethodSels; 18865f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> ClassMethodTypes; 18871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump for (ObjCCategoryImplDecl::classmeth_iterator 188817945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = OCD->classmeth_begin(), endIter = OCD->classmeth_end(); 1889653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter != endIter ; iter++) { 18907ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar ClassMethodSels.push_back((*iter)->getSelector()); 18917ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 18927ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar CGM.getContext().getObjCEncodingForMethodDecl(*iter,TypeStr); 18938a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall ClassMethodTypes.push_back(MakeConstantString(TypeStr)); 18947ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 18957ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 18967ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect the names of referenced protocols 18975f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<std::string, 16> Protocols; 1898ad9e06d82ae627e858e5bfe4a7f1f9337b5b0a15David Chisnall const ObjCCategoryDecl *CatDecl = OCD->getCategoryDecl(); 1899ad9e06d82ae627e858e5bfe4a7f1f9337b5b0a15David Chisnall const ObjCList<ObjCProtocolDecl> &Protos = CatDecl->getReferencedProtocols(); 19007ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar for (ObjCList<ObjCProtocolDecl>::iterator I = Protos.begin(), 19017ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar E = Protos.end(); I != E; ++I) 1902d9d22dd9c94618490dbffb0e2caf222530ca39d3Chris Lattner Protocols.push_back((*I)->getNameAsString()); 19037ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 190420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 190520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(MakeConstantString(CategoryName)); 190620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(MakeConstantString(ClassName)); 19071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Instance method list 19083c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getBitCast(GenerateMethodList( 1909a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner ClassName, CategoryName, InstanceMethodSels, InstanceMethodTypes, 191020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov false), PtrTy)); 191120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Class method list 19123c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getBitCast(GenerateMethodList( 1913a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner ClassName, CategoryName, ClassMethodSels, ClassMethodTypes, true), 191420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy)); 191520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Protocol list 19163c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getBitCast( 191720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov GenerateProtocolList(Protocols), PtrTy)); 19183c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Categories.push_back(llvm::ConstantExpr::getBitCast( 19197650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner MakeGlobal(llvm::StructType::get(PtrToInt8Ty, PtrToInt8Ty, 192047a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson PtrTy, PtrTy, PtrTy, NULL), Elements), PtrTy)); 192120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 19227ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 1923d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanianllvm::Constant *CGObjCGNU::GeneratePropertyList(const ObjCImplementationDecl *OID, 19245f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVectorImpl<Selector> &InstanceMethodSels, 19255f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVectorImpl<llvm::Constant*> &InstanceMethodTypes) { 1926d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ASTContext &Context = CGM.getContext(); 1927d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // 1928d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Property metadata: name, attributes, isSynthesized, setter name, setter 1929d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // types, getter name, getter types. 19307650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *PropertyMetadataTy = llvm::StructType::get( 1931d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrToInt8Ty, Int8Ty, Int8Ty, PtrToInt8Ty, PtrToInt8Ty, PtrToInt8Ty, 1932d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrToInt8Ty, NULL); 1933d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> Properties; 1934d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1935d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1936d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Add all of the property methods need adding to the method list and to the 1937d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // property metadata list. 1938d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian for (ObjCImplDecl::propimpl_iterator 1939d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian iter = OID->propimpl_begin(), endIter = OID->propimpl_end(); 1940d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian iter != endIter ; iter++) { 1941d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> Fields; 1942262bc18e32500558af7cb0afa205b34bd37bafedDavid Blaikie ObjCPropertyDecl *property = iter->getPropertyDecl(); 1943581deb3da481053c4993c7600f97acf7768caac5David Blaikie ObjCPropertyImplDecl *propertyImpl = *iter; 194442ba04a072c69d84a6660e4498215086662910acDavid Chisnall bool isSynthesized = (propertyImpl->getPropertyImplementation() == 194542ba04a072c69d84a6660e4498215086662910acDavid Chisnall ObjCPropertyImplDecl::Synthesize); 1946d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1947d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(MakeConstantString(property->getNameAsString())); 1948d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(llvm::ConstantInt::get(Int8Ty, 1949d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian property->getPropertyAttributes())); 195042ba04a072c69d84a6660e4498215086662910acDavid Chisnall Fields.push_back(llvm::ConstantInt::get(Int8Ty, isSynthesized)); 1951d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if (ObjCMethodDecl *getter = property->getGetterMethodDecl()) { 1952d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::string TypeStr; 1953d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Context.getObjCEncodingForMethodDecl(getter,TypeStr); 1954d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *TypeEncoding = MakeConstantString(TypeStr); 195542ba04a072c69d84a6660e4498215086662910acDavid Chisnall if (isSynthesized) { 195642ba04a072c69d84a6660e4498215086662910acDavid Chisnall InstanceMethodTypes.push_back(TypeEncoding); 195742ba04a072c69d84a6660e4498215086662910acDavid Chisnall InstanceMethodSels.push_back(getter->getSelector()); 195842ba04a072c69d84a6660e4498215086662910acDavid Chisnall } 1959d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(MakeConstantString(getter->getSelector().getAsString())); 1960d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(TypeEncoding); 1961d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 1962d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1963d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1964d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1965d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if (ObjCMethodDecl *setter = property->getSetterMethodDecl()) { 1966d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::string TypeStr; 1967d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Context.getObjCEncodingForMethodDecl(setter,TypeStr); 1968d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *TypeEncoding = MakeConstantString(TypeStr); 196942ba04a072c69d84a6660e4498215086662910acDavid Chisnall if (isSynthesized) { 197042ba04a072c69d84a6660e4498215086662910acDavid Chisnall InstanceMethodTypes.push_back(TypeEncoding); 197142ba04a072c69d84a6660e4498215086662910acDavid Chisnall InstanceMethodSels.push_back(setter->getSelector()); 197242ba04a072c69d84a6660e4498215086662910acDavid Chisnall } 1973d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(MakeConstantString(setter->getSelector().getAsString())); 1974d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(TypeEncoding); 1975d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 1976d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1977d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1978d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1979d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Properties.push_back(llvm::ConstantStruct::get(PropertyMetadataTy, Fields)); 1980d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1981d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ArrayType *PropertyArrayTy = 1982d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ArrayType::get(PropertyMetadataTy, Properties.size()); 1983d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *PropertyArray = llvm::ConstantArray::get(PropertyArrayTy, 1984d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Properties); 1985d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant* PropertyListInitFields[] = 1986d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian {llvm::ConstantInt::get(IntTy, Properties.size()), NULLPtr, PropertyArray}; 1987d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1988d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *PropertyListInit = 1989c5cbb909e8a27deb8f1a2b6b7bf56a96051af81aChris Lattner llvm::ConstantStruct::getAnon(PropertyListInitFields); 1990d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian return new llvm::GlobalVariable(TheModule, PropertyListInit->getType(), false, 1991d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::GlobalValue::InternalLinkage, PropertyListInit, 1992d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ".objc_property_list"); 1993d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian} 1994d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 199529254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnallvoid CGObjCGNU::RegisterAlias(const ObjCCompatibleAliasDecl *OAD) { 199629254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall // Get the class declaration for which the alias is specified. 199729254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall ObjCInterfaceDecl *ClassDecl = 199829254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall const_cast<ObjCInterfaceDecl *>(OAD->getClassInterface()); 199929254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall std::string ClassName = ClassDecl->getNameAsString(); 200029254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall std::string AliasName = OAD->getNameAsString(); 200129254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall ClassAliases.push_back(ClassAliasPair(ClassName,AliasName)); 200229254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall} 200329254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall 20047ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbarvoid CGObjCGNU::GenerateClass(const ObjCImplementationDecl *OID) { 20057ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar ASTContext &Context = CGM.getContext(); 20067ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 20077ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Get the superclass name. 20081eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const ObjCInterfaceDecl * SuperClassDecl = 20097ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar OID->getClassInterface()->getSuperClass(); 20108ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string SuperClassName; 20112a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner if (SuperClassDecl) { 20128ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner SuperClassName = SuperClassDecl->getNameAsString(); 20132a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner EmitClassRef(SuperClassName); 20142a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner } 20157ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 20167ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Get the class name 201709dc6660487fc2f4a4bb2032e30123d3e0da7230Chris Lattner ObjCInterfaceDecl *ClassDecl = 201809dc6660487fc2f4a4bb2032e30123d3e0da7230Chris Lattner const_cast<ObjCInterfaceDecl *>(OID->getClassInterface()); 20198ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string ClassName = ClassDecl->getNameAsString(); 20202a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner // Emit the symbol that is used to generate linker errors if this class is 20212a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner // referenced in other modules but not declared. 2022c51db23f58bd887b16cf91554aa86c430a2496e7Fariborz Jahanian std::string classSymbolName = "__objc_class_name_" + ClassName; 20231eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (llvm::GlobalVariable *symbol = 2024c51db23f58bd887b16cf91554aa86c430a2496e7Fariborz Jahanian TheModule.getGlobalVariable(classSymbolName)) { 20254a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson symbol->setInitializer(llvm::ConstantInt::get(LongTy, 0)); 2026c51db23f58bd887b16cf91554aa86c430a2496e7Fariborz Jahanian } else { 20271c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson new llvm::GlobalVariable(TheModule, LongTy, false, 20284a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson llvm::GlobalValue::ExternalLinkage, llvm::ConstantInt::get(LongTy, 0), 20291c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson classSymbolName); 2030c51db23f58bd887b16cf91554aa86c430a2496e7Fariborz Jahanian } 20311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 20322bebbf0acee55404de4b8846713b64429e744e8fDaniel Dunbar // Get the size of instances. 20335f022d82696c84e4d127c558871d68ac6273274eKen Dyck int instanceSize = 20345f022d82696c84e4d127c558871d68ac6273274eKen Dyck Context.getASTObjCImplementationLayout(OID).getSize().getQuantity(); 20357ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 20367ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about instance variables. 20375f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> IvarNames; 20385f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> IvarTypes; 20395f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> IvarOffsets; 20401eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2041d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> IvarOffsetValues; 2042917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall SmallVector<bool, 16> WeakIvars; 2043917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall SmallVector<bool, 16> StrongIvars; 2044d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 20451eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump int superInstanceSize = !SuperClassDecl ? 0 : 20465f022d82696c84e4d127c558871d68ac6273274eKen Dyck Context.getASTObjCInterfaceLayout(SuperClassDecl).getSize().getQuantity(); 20479cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // For non-fragile ivars, set the instance size to 0 - {the size of just this 20489cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // class}. The runtime will then set this to the correct value on load. 2049260611a32535c851237926bfcf78869b13c07d5bJohn McCall if (CGM.getContext().getLangOpts().ObjCRuntime.isNonFragile()) { 20509cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian instanceSize = 0 - (instanceSize - superInstanceSize); 20519cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 20527f63cb098f2461643f71ea590c1a477603f27f63David Chisnall 2053db8264e4c5ffd7af6fbad4ca4306bd382bb02691Jordy Rose for (const ObjCIvarDecl *IVD = ClassDecl->all_declared_ivar_begin(); IVD; 2054db8264e4c5ffd7af6fbad4ca4306bd382bb02691Jordy Rose IVD = IVD->getNextIvar()) { 20557ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Store the name 20567f63cb098f2461643f71ea590c1a477603f27f63David Chisnall IvarNames.push_back(MakeConstantString(IVD->getNameAsString())); 20577ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Get the type encoding for this ivar 20587ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 20597f63cb098f2461643f71ea590c1a477603f27f63David Chisnall Context.getObjCEncodingForType(IVD->getType(), TypeStr); 20608a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall IvarTypes.push_back(MakeConstantString(TypeStr)); 20617ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Get the offset 2062d901da531433254210a08e8b1f9e1ad049b340aaDavid Chisnall uint64_t BaseOffset = ComputeIvarBaseOffset(CGM, OID, IVD); 2063aecbf24a6bad049437f8fec97e557d414003a3dbDavid Chisnall uint64_t Offset = BaseOffset; 2064260611a32535c851237926bfcf78869b13c07d5bJohn McCall if (CGM.getContext().getLangOpts().ObjCRuntime.isNonFragile()) { 2065d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Offset = BaseOffset - superInstanceSize; 20669cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 206763ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall llvm::Constant *OffsetValue = llvm::ConstantInt::get(IntTy, Offset); 206863ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall // Create the direct offset value 206963ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall std::string OffsetName = "__objc_ivar_offset_value_" + ClassName +"." + 207063ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall IVD->getNameAsString(); 207163ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall llvm::GlobalVariable *OffsetVar = TheModule.getGlobalVariable(OffsetName); 207263ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall if (OffsetVar) { 207363ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall OffsetVar->setInitializer(OffsetValue); 207463ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall // If this is the real definition, change its linkage type so that 207563ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall // different modules will use this one, rather than their private 207663ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall // copy. 207763ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall OffsetVar->setLinkage(llvm::GlobalValue::ExternalLinkage); 207863ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall } else 207963ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall OffsetVar = new llvm::GlobalVariable(TheModule, IntTy, 2080d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian false, llvm::GlobalValue::ExternalLinkage, 208163ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall OffsetValue, 2082d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian "__objc_ivar_offset_value_" + ClassName +"." + 208363ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall IVD->getNameAsString()); 208463ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall IvarOffsets.push_back(OffsetValue); 208563ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall IvarOffsetValues.push_back(OffsetVar); 2086917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall Qualifiers::ObjCLifetime lt = IVD->getType().getQualifiers().getObjCLifetime(); 2087917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall switch (lt) { 2088917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall case Qualifiers::OCL_Strong: 2089917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall StrongIvars.push_back(true); 2090917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall WeakIvars.push_back(false); 2091917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall break; 2092917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall case Qualifiers::OCL_Weak: 2093917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall StrongIvars.push_back(false); 2094917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall WeakIvars.push_back(true); 2095917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall break; 2096917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall default: 2097917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall StrongIvars.push_back(false); 2098917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall WeakIvars.push_back(false); 2099917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall } 21007ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 2101917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::Constant *StrongIvarBitmap = MakeBitField(StrongIvars); 2102917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::Constant *WeakIvarBitmap = MakeBitField(WeakIvars); 21039f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::GlobalVariable *IvarOffsetArray = 21049f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall MakeGlobalArray(PtrToIntTy, IvarOffsetValues, ".ivar.offsets"); 21059f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 21067ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 21077ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about instance methods 21085f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<Selector, 16> InstanceMethodSels; 21095f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> InstanceMethodTypes; 21101eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump for (ObjCImplementationDecl::instmeth_iterator 211117945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = OID->instmeth_begin(), endIter = OID->instmeth_end(); 2112653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter != endIter ; iter++) { 21137ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar InstanceMethodSels.push_back((*iter)->getSelector()); 21147ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 21157ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar Context.getObjCEncodingForMethodDecl((*iter),TypeStr); 21168a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall InstanceMethodTypes.push_back(MakeConstantString(TypeStr)); 21177ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 2118d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 2119d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *Properties = GeneratePropertyList(OID, InstanceMethodSels, 2120d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian InstanceMethodTypes); 2121d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 21227ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 21237ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about class methods 21245f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<Selector, 16> ClassMethodSels; 21255f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> ClassMethodTypes; 2126653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor for (ObjCImplementationDecl::classmeth_iterator 212717945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = OID->classmeth_begin(), endIter = OID->classmeth_end(); 2128653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter != endIter ; iter++) { 21297ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar ClassMethodSels.push_back((*iter)->getSelector()); 21307ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 21317ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar Context.getObjCEncodingForMethodDecl((*iter),TypeStr); 21328a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall ClassMethodTypes.push_back(MakeConstantString(TypeStr)); 21337ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 21347ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect the names of referenced protocols 21355f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<std::string, 16> Protocols; 2136a5f4441de7890953460d95f4e88b9fa432b48dc2Argyrios Kyrtzidis for (ObjCInterfaceDecl::protocol_iterator 2137a5f4441de7890953460d95f4e88b9fa432b48dc2Argyrios Kyrtzidis I = ClassDecl->protocol_begin(), 2138a5f4441de7890953460d95f4e88b9fa432b48dc2Argyrios Kyrtzidis E = ClassDecl->protocol_end(); I != E; ++I) 2139d9d22dd9c94618490dbffb0e2caf222530ca39d3Chris Lattner Protocols.push_back((*I)->getNameAsString()); 21407ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 21417ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 21427ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 214320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Get the superclass pointer. 214420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SuperClass; 21458ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner if (!SuperClassName.empty()) { 214620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov SuperClass = MakeConstantString(SuperClassName, ".super_class_name"); 214720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } else { 214803e205031b08669f05c41eed5b896fc94c4a12bbOwen Anderson SuperClass = llvm::ConstantPointerNull::get(PtrToInt8Ty); 214920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 215020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Empty vector used to construct empty method lists 21515f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 1> empty; 215220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Generate the method and instance variable lists 215320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MethodList = GenerateMethodList(ClassName, "", 2154a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner InstanceMethodSels, InstanceMethodTypes, false); 215520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ClassMethodList = GenerateMethodList(ClassName, "", 2156a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner ClassMethodSels, ClassMethodTypes, true); 215720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *IvarList = GenerateIvarList(IvarNames, IvarTypes, 215820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IvarOffsets); 21591eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Irrespective of whether we are compiling for a fragile or non-fragile ABI, 21608a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // we emit a symbol containing the offset for each ivar in the class. This 21618a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // allows code compiled for the non-Fragile ABI to inherit from code compiled 21628a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // for the legacy ABI, without causing problems. The converse is also 21638a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // possible, but causes all ivar accesses to be fragile. 2164e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall 21658a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // Offset pointer for getting at the correct field in the ivar list when 21668a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // setting up the alias. These are: The base address for the global, the 21678a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // ivar array (second field), the ivar in this list (set for each ivar), and 21688a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // the offset (third field in ivar structure) 2169917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::Type *IndexTy = Int32Ty; 21708a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::Constant *offsetPointerIndexes[] = {Zeros[0], 21711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::ConstantInt::get(IndexTy, 1), 0, 21728a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::ConstantInt::get(IndexTy, 2) }; 21738a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall 2174db8264e4c5ffd7af6fbad4ca4306bd382bb02691Jordy Rose unsigned ivarIndex = 0; 2175db8264e4c5ffd7af6fbad4ca4306bd382bb02691Jordy Rose for (const ObjCIvarDecl *IVD = ClassDecl->all_declared_ivar_begin(); IVD; 2176db8264e4c5ffd7af6fbad4ca4306bd382bb02691Jordy Rose IVD = IVD->getNextIvar()) { 21778a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall const std::string Name = "__objc_ivar_offset_" + ClassName + '.' 2178e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall + IVD->getNameAsString(); 2179db8264e4c5ffd7af6fbad4ca4306bd382bb02691Jordy Rose offsetPointerIndexes[2] = llvm::ConstantInt::get(IndexTy, ivarIndex); 21808a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // Get the correct ivar field 21818a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::Constant *offsetValue = llvm::ConstantExpr::getGetElementPtr( 2182a5c04344fa70d6eec34344760c1fe511e16f2d76Jay Foad IvarList, offsetPointerIndexes); 2183e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // Get the existing variable, if one exists. 21848a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::GlobalVariable *offset = TheModule.getNamedGlobal(Name); 21858a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall if (offset) { 218674a1a1f0b6f6c4468444196a02c033be521f7d79Ted Kremenek offset->setInitializer(offsetValue); 218774a1a1f0b6f6c4468444196a02c033be521f7d79Ted Kremenek // If this is the real definition, change its linkage type so that 218874a1a1f0b6f6c4468444196a02c033be521f7d79Ted Kremenek // different modules will use this one, rather than their private 218974a1a1f0b6f6c4468444196a02c033be521f7d79Ted Kremenek // copy. 219074a1a1f0b6f6c4468444196a02c033be521f7d79Ted Kremenek offset->setLinkage(llvm::GlobalValue::ExternalLinkage); 21918a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall } else { 219274a1a1f0b6f6c4468444196a02c033be521f7d79Ted Kremenek // Add a new alias if there isn't one already. 219374a1a1f0b6f6c4468444196a02c033be521f7d79Ted Kremenek offset = new llvm::GlobalVariable(TheModule, offsetValue->getType(), 219474a1a1f0b6f6c4468444196a02c033be521f7d79Ted Kremenek false, llvm::GlobalValue::ExternalLinkage, offsetValue, Name); 219574a1a1f0b6f6c4468444196a02c033be521f7d79Ted Kremenek (void) offset; // Silence dead store warning. 21968a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall } 2197db8264e4c5ffd7af6fbad4ca4306bd382bb02691Jordy Rose ++ivarIndex; 21988a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall } 21999d06ba82d8afb1cf01235f38f350ce5ad0c15444David Chisnall llvm::Constant *ZeroPtr = llvm::ConstantInt::get(IntPtrTy, 0); 220020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov //Generate metaclass for class methods 220120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MetaClassStruct = GenerateClassStructure(NULLPtr, 22021804463ee790ac3cc73f72597ccb38b983f7d263David Chisnall NULLPtr, 0x12L, ClassName.c_str(), 0, Zeros[0], GenerateIvarList( 2203917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall empty, empty, empty), ClassMethodList, NULLPtr, 22049d06ba82d8afb1cf01235f38f350ce5ad0c15444David Chisnall NULLPtr, NULLPtr, ZeroPtr, ZeroPtr, true); 22055efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar 220620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Generate the class structure 22078ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner llvm::Constant *ClassStruct = 2208d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian GenerateClassStructure(MetaClassStruct, SuperClass, 0x11L, 22098ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner ClassName.c_str(), 0, 22104a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson llvm::ConstantInt::get(LongTy, instanceSize), IvarList, 2211d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MethodList, GenerateProtocolList(Protocols), IvarOffsetArray, 2212917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall Properties, StrongIvarBitmap, WeakIvarBitmap); 22135efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar 22145efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar // Resolve the class aliases, if they exist. 22155efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar if (ClassPtrAlias) { 22160b9c22b61a3c99c8c0e8d898adb0f60afa76584eDavid Chisnall ClassPtrAlias->replaceAllUsesWith( 22173c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::ConstantExpr::getBitCast(ClassStruct, IdTy)); 22180b9c22b61a3c99c8c0e8d898adb0f60afa76584eDavid Chisnall ClassPtrAlias->eraseFromParent(); 22195efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar ClassPtrAlias = 0; 22205efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } 22215efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar if (MetaClassPtrAlias) { 22220b9c22b61a3c99c8c0e8d898adb0f60afa76584eDavid Chisnall MetaClassPtrAlias->replaceAllUsesWith( 22233c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::ConstantExpr::getBitCast(MetaClassStruct, IdTy)); 22240b9c22b61a3c99c8c0e8d898adb0f60afa76584eDavid Chisnall MetaClassPtrAlias->eraseFromParent(); 22255efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar MetaClassPtrAlias = 0; 22265efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } 22275efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar 222820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Add class structure to list to be added to the symtab later 22293c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson ClassStruct = llvm::ConstantExpr::getBitCast(ClassStruct, PtrToInt8Ty); 223020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.push_back(ClassStruct); 223120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 223220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 2233c38e9affd4519ea199af22419c8c794973cc4b23Fariborz Jahanian 22341eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumpllvm::Function *CGObjCGNU::ModuleInitFunction() { 223520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Only emit an ObjC load function if no Objective-C stuff has been called 223620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov if (Classes.empty() && Categories.empty() && ConstantStrings.empty() && 22379f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall ExistingProtocols.empty() && SelectorTable.empty()) 223820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return NULL; 22391b8956e1ce4c5770982d6e59edb16979b500677aEli Friedman 2240d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Add all referenced protocols to a category. 2241d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian GenerateProtocolHolderCategory(); 2242d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 22432acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::StructType *SelStructTy = dyn_cast<llvm::StructType>( 2244e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner SelectorTy->getElementType()); 2245ef6de3da8572607f786303c07150daa6e140ab19Jay Foad llvm::Type *SelStructPtrTy = SelectorTy; 2246e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner if (SelStructTy == 0) { 22477650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner SelStructTy = llvm::StructType::get(PtrToInt8Ty, PtrToInt8Ty, NULL); 224896e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson SelStructPtrTy = llvm::PointerType::getUnqual(SelStructTy); 2249e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner } 2250e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner 225120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 225271238f67c5df13eef19450d66b7a7ab28377192aChris Lattner llvm::Constant *Statics = NULLPtr; 225320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Generate statics list: 225471238f67c5df13eef19450d66b7a7ab28377192aChris Lattner if (ConstantStrings.size()) { 225596e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *StaticsArrayTy = llvm::ArrayType::get(PtrToInt8Ty, 225671238f67c5df13eef19450d66b7a7ab28377192aChris Lattner ConstantStrings.size() + 1); 225771238f67c5df13eef19450d66b7a7ab28377192aChris Lattner ConstantStrings.push_back(NULLPtr); 22588a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall 22594e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie StringRef StringClass = CGM.getLangOpts().ObjCConstantStringClass; 22609f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 22611b0969590e712d7d52fc9c0d43d3ab85c36d07a6Daniel Dunbar if (StringClass.empty()) StringClass = "NXConstantString"; 22629f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 22638a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall Elements.push_back(MakeConstantString(StringClass, 22648a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall ".objc_static_class_name")); 22657db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson Elements.push_back(llvm::ConstantArray::get(StaticsArrayTy, 226671238f67c5df13eef19450d66b7a7ab28377192aChris Lattner ConstantStrings)); 22671eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::StructType *StaticsListTy = 22687650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType::get(PtrToInt8Ty, StaticsArrayTy, NULL); 2269a1cf15f4680e5cf39e72e28c5ea854fcba792e84Owen Anderson llvm::Type *StaticsListPtrTy = 227096e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(StaticsListTy); 227171238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Statics = MakeGlobal(StaticsListTy, Elements, ".objc_statics"); 22721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::ArrayType *StaticsListArrayTy = 227396e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType::get(StaticsListPtrTy, 2); 227471238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Elements.clear(); 227571238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Elements.push_back(Statics); 2276c9c88b4159791c48e486ca94e3743b5979e2b7a6Owen Anderson Elements.push_back(llvm::Constant::getNullValue(StaticsListPtrTy)); 227771238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Statics = MakeGlobal(StaticsListArrayTy, Elements, ".objc_statics_ptr"); 22783c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Statics = llvm::ConstantExpr::getBitCast(Statics, PtrTy); 227971238f67c5df13eef19450d66b7a7ab28377192aChris Lattner } 228020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Array of classes, categories, and constant objects 228196e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *ClassListTy = llvm::ArrayType::get(PtrToInt8Ty, 228220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.size() + Categories.size() + 2); 22837650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *SymTabTy = llvm::StructType::get(LongTy, SelStructPtrTy, 22840032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::Type::getInt16Ty(VMContext), 22850032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::Type::getInt16Ty(VMContext), 2286630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner ClassListTy, NULL); 228720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 228820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 228920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Pointer to an array of selectors used in this module. 229020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Selectors; 22919f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall std::vector<llvm::GlobalAlias*> SelectorAliases; 22929f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall for (SelectorMap::iterator iter = SelectorTable.begin(), 22939f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall iterEnd = SelectorTable.end(); iter != iterEnd ; ++iter) { 22949f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 22959f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall std::string SelNameStr = iter->first.getAsString(); 22969f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::Constant *SelName = ExportUniqueString(SelNameStr, ".objc_sel_name"); 22979f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 22985f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVectorImpl<TypedSelector> &Types = iter->second; 22995f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner for (SmallVectorImpl<TypedSelector>::iterator i = Types.begin(), 23009f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall e = Types.end() ; i!=e ; i++) { 23019f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 23029f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::Constant *SelectorTypeEncoding = NULLPtr; 23039f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall if (!i->first.empty()) 23049f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SelectorTypeEncoding = MakeConstantString(i->first, ".objc_sel_types"); 23059f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 23069f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Elements.push_back(SelName); 23079f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Elements.push_back(SelectorTypeEncoding); 23089f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Selectors.push_back(llvm::ConstantStruct::get(SelStructTy, Elements)); 23099f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Elements.clear(); 23109f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 23119f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // Store the selector alias for later replacement 23129f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SelectorAliases.push_back(i->second); 23139f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall } 231420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 23159f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall unsigned SelectorCount = Selectors.size(); 23169f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // NULL-terminate the selector list. This should not actually be required, 23179f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // because the selector list has a length field. Unfortunately, the GCC 23189f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // runtime decides to ignore the length field and expects a NULL terminator, 23199f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // and GCC cooperates with this by always setting the length to 0. 232020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 232120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 232208e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson Selectors.push_back(llvm::ConstantStruct::get(SelStructTy, Elements)); 232320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 23249f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 232520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Number of static selectors 23269f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Elements.push_back(llvm::ConstantInt::get(LongTy, SelectorCount)); 23279f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::Constant *SelectorList = MakeGlobalArray(SelStructTy, Selectors, 232820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ".objc_selector_list"); 23291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Elements.push_back(llvm::ConstantExpr::getBitCast(SelectorList, 2330e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner SelStructPtrTy)); 233120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 233220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Now that all of the static selectors exist, create pointers to them. 23339f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall for (unsigned int i=0 ; i<SelectorCount ; i++) { 23349f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 233520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Idxs[] = {Zeros[0], 2336917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::ConstantInt::get(Int32Ty, i), Zeros[0]}; 23379f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // FIXME: We're generating redundant loads and stores here! 2338c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Constant *SelPtr = llvm::ConstantExpr::getGetElementPtr(SelectorList, 2339a5c04344fa70d6eec34344760c1fe511e16f2d76Jay Foad makeArrayRef(Idxs, 2)); 2340e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner // If selectors are defined as an opaque type, cast the pointer to this 2341e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner // type. 2342c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall SelPtr = llvm::ConstantExpr::getBitCast(SelPtr, SelectorTy); 23439f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SelectorAliases[i]->replaceAllUsesWith(SelPtr); 23449f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SelectorAliases[i]->eraseFromParent(); 234520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 23469f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 234720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Number of classes defined. 23481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Elements.push_back(llvm::ConstantInt::get(llvm::Type::getInt16Ty(VMContext), 234920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.size())); 235020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Number of categories defined 23511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Elements.push_back(llvm::ConstantInt::get(llvm::Type::getInt16Ty(VMContext), 235220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Categories.size())); 235320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an array of classes, then categories, then static object instances 235420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.insert(Classes.end(), Categories.begin(), Categories.end()); 235520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // NULL-terminated list of static object instances (mainly constant strings) 235620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.push_back(Statics); 235720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.push_back(NULLPtr); 23587db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson llvm::Constant *ClassList = llvm::ConstantArray::get(ClassListTy, Classes); 235920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ClassList); 23601eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Construct the symbol table 236120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SymTab= MakeGlobal(SymTabTy, Elements); 236220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 236320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // The symbol table is contained in a module which has some version-checking 236420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // constants 23657650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType * ModuleTy = llvm::StructType::get(LongTy, LongTy, 2366a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall PtrToInt8Ty, llvm::PointerType::getUnqual(SymTabTy), 2367f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall (RuntimeVersion >= 10) ? IntTy : NULL, NULL); 236820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 23699f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // Runtime version, used for ABI compatibility checking. 23709f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Elements.push_back(llvm::ConstantInt::get(LongTy, RuntimeVersion)); 237191a0b51438e5259a79d68d7450c453827beed9e2Fariborz Jahanian // sizeof(ModuleTy) 237274a8bbf0654fbbf37be04b240b5bbe591f37f242Benjamin Kramer llvm::TargetData td(&TheModule); 2373e0afc892e75f526f7ecce7dd152d946337632efeKen Dyck Elements.push_back( 2374e0afc892e75f526f7ecce7dd152d946337632efeKen Dyck llvm::ConstantInt::get(LongTy, 2375e0afc892e75f526f7ecce7dd152d946337632efeKen Dyck td.getTypeSizeInBits(ModuleTy) / 2376e0afc892e75f526f7ecce7dd152d946337632efeKen Dyck CGM.getContext().getCharWidth())); 23779f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 23789f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // The path to the source file where this module was declared 23799f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SourceManager &SM = CGM.getContext().getSourceManager(); 23809f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall const FileEntry *mainFile = SM.getFileEntryForID(SM.getMainFileID()); 23819f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall std::string path = 23829f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall std::string(mainFile->getDir()->getName()) + '/' + mainFile->getName(); 23839f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Elements.push_back(MakeConstantString(path, ".objc_source_file_name")); 238420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(SymTab); 2385a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall 2386f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall if (RuntimeVersion >= 10) 23874e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie switch (CGM.getLangOpts().getGC()) { 2388f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall case LangOptions::GCOnly: 2389a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall Elements.push_back(llvm::ConstantInt::get(IntTy, 2)); 2390a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall break; 2391f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall case LangOptions::NonGC: 23924e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (CGM.getLangOpts().ObjCAutoRefCount) 2393f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall Elements.push_back(llvm::ConstantInt::get(IntTy, 1)); 2394f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall else 2395f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall Elements.push_back(llvm::ConstantInt::get(IntTy, 0)); 2396f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall break; 2397f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall case LangOptions::HybridGC: 2398f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall Elements.push_back(llvm::ConstantInt::get(IntTy, 1)); 2399f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall break; 2400f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall } 2401a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall 240220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Value *Module = MakeGlobal(ModuleTy, Elements); 240320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 240420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create the load function calling the runtime entry point with the module 240520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // structure 240620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Function * LoadFunction = llvm::Function::Create( 24070032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::FunctionType::get(llvm::Type::getVoidTy(VMContext), false), 240820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::GlobalValue::InternalLinkage, ".objc_load_function", 240920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov &TheModule); 24100032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::BasicBlock *EntryBB = 24110032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::BasicBlock::Create(VMContext, "entry", LoadFunction); 2412a1cf15f4680e5cf39e72e28c5ea854fcba792e84Owen Anderson CGBuilderTy Builder(VMContext); 241320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Builder.SetInsertPoint(EntryBB); 241426c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian 241595d318c4c10437db40ca6e15fdf32e04012da58eBenjamin Kramer llvm::FunctionType *FT = 2416da549e8995c447542d5631b8b67fcc3a9582797aJay Foad llvm::FunctionType::get(Builder.getVoidTy(), 2417da549e8995c447542d5631b8b67fcc3a9582797aJay Foad llvm::PointerType::getUnqual(ModuleTy), true); 241895d318c4c10437db40ca6e15fdf32e04012da58eBenjamin Kramer llvm::Value *Register = CGM.CreateRuntimeFunction(FT, "__objc_exec_class"); 241920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Builder.CreateCall(Register, Module); 242029254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall 2421dccaa239ec125926a9c1fb5f328bce349e41637bDavid Chisnall if (!ClassAliases.empty()) { 242229254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall llvm::Type *ArgTypes[2] = {PtrTy, PtrToInt8Ty}; 242329254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall llvm::FunctionType *RegisterAliasTy = 242429254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall llvm::FunctionType::get(Builder.getVoidTy(), 242529254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall ArgTypes, false); 242629254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall llvm::Function *RegisterAlias = llvm::Function::Create( 242729254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall RegisterAliasTy, 242829254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall llvm::GlobalValue::ExternalWeakLinkage, "class_registerAlias_np", 242929254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall &TheModule); 243029254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall llvm::BasicBlock *AliasBB = 243129254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall llvm::BasicBlock::Create(VMContext, "alias", LoadFunction); 243229254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall llvm::BasicBlock *NoAliasBB = 243329254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall llvm::BasicBlock::Create(VMContext, "no_alias", LoadFunction); 243429254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall 243529254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall // Branch based on whether the runtime provided class_registerAlias_np() 243629254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall llvm::Value *HasRegisterAlias = Builder.CreateICmpNE(RegisterAlias, 243729254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall llvm::Constant::getNullValue(RegisterAlias->getType())); 243829254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall Builder.CreateCondBr(HasRegisterAlias, AliasBB, NoAliasBB); 243929254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall 244029254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall // The true branch (has alias registration fucntion): 244129254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall Builder.SetInsertPoint(AliasBB); 244229254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall // Emit alias registration calls: 244329254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall for (std::vector<ClassAliasPair>::iterator iter = ClassAliases.begin(); 244429254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall iter != ClassAliases.end(); ++iter) { 244529254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall llvm::Constant *TheClass = 244629254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall TheModule.getGlobalVariable(("_OBJC_CLASS_" + iter->first).c_str(), 244729254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall true); 244829254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall if (0 != TheClass) { 244929254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall TheClass = llvm::ConstantExpr::getBitCast(TheClass, PtrTy); 245029254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall Builder.CreateCall2(RegisterAlias, TheClass, 245129254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall MakeConstantString(iter->second)); 245229254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall } 245329254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall } 245429254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall // Jump to end: 245529254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall Builder.CreateBr(NoAliasBB); 245629254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall 245729254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall // Missing alias registration function, just return from the function: 245829254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall Builder.SetInsertPoint(NoAliasBB); 245929254f4dd114fe2dd5c4e7a261ebea941973ad3dDavid Chisnall } 246020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Builder.CreateRetVoid(); 24619cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian 246220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return LoadFunction; 246320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 24647ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 2465679a502d462ef819e6175b58e255ca3f3391e7cfFariborz Jahanianllvm::Function *CGObjCGNU::GenerateMethod(const ObjCMethodDecl *OMD, 24661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const ObjCContainerDecl *CD) { 24671eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const ObjCCategoryImplDecl *OCD = 24683e0a540b6d846178857289ec0eb8470a278d11a3Steve Naroff dyn_cast<ObjCCategoryImplDecl>(OMD->getDeclContext()); 24695f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef CategoryName = OCD ? OCD->getName() : ""; 24705f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef ClassName = CD->getName(); 24719f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Selector MethodName = OMD->getSelector(); 2472f8d49f64ef6ab7e632717a31631fc289aab69428Douglas Gregor bool isClassMethod = !OMD->isInstanceMethod(); 2473391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner 2474541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel Dunbar CodeGenTypes &Types = CGM.getTypes(); 24752acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::FunctionType *MethodTy = 2476de5d3c717684f3821b8db58037bc7140acf134aaJohn McCall Types.GetFunctionType(Types.arrangeObjCMethodDeclaration(OMD)); 247720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::string FunctionName = SymbolNameForMethod(ClassName, CategoryName, 247820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov MethodName, isClassMethod); 247920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 2480d6c93d703541c992e06eb9a59a2d826a30da65b2Daniel Dunbar llvm::Function *Method 24811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump = llvm::Function::Create(MethodTy, 24821eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::GlobalValue::InternalLinkage, 24831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump FunctionName, 24841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump &TheModule); 2485391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner return Method; 2486391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner} 2487391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner 2488789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnallllvm::Constant *CGObjCGNU::GetPropertyGetFunction() { 24899f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall return GetPropertyFn; 249049f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar} 249149f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar 2492789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnallllvm::Constant *CGObjCGNU::GetPropertySetFunction() { 24939f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall return SetPropertyFn; 249449f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar} 249549f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar 2496ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenekllvm::Constant *CGObjCGNU::GetOptimizedPropertySetFunction(bool atomic, 2497ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek bool copy) { 2498ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek return 0; 2499ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek} 2500ebcb57a8d298862c65043e88b2429591ab3c58d3Ted Kremenek 2501789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnallllvm::Constant *CGObjCGNU::GetGetStructFunction() { 25029f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall return GetStructPropertyFn; 25038fac25d33b13e25f512dd921d4d5a4b565f5d175David Chisnall} 2504789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnallllvm::Constant *CGObjCGNU::GetSetStructFunction() { 25059f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall return SetStructPropertyFn; 25066cc590602f41c3e98e8af0023d54296c8eca7910Fariborz Jahanian} 2507e3173021fa3bfdf7e6759d67838e385a83b2d57eFariborz Jahanianllvm::Constant *CGObjCGNU::GetCppAtomicObjectFunction() { 2508e3173021fa3bfdf7e6759d67838e385a83b2d57eFariborz Jahanian return 0; 2509e3173021fa3bfdf7e6759d67838e385a83b2d57eFariborz Jahanian} 25106cc590602f41c3e98e8af0023d54296c8eca7910Fariborz Jahanian 2511309a4368cd299cff30ab22709e2b772cf8059e45Daniel Dunbarllvm::Constant *CGObjCGNU::EnumerationMutationFunction() { 25129f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall return EnumerationMutationFn; 25132abd89c039e835e84519a4cd8a7495899a70153dAnders Carlsson} 25142abd89c039e835e84519a4cd8a7495899a70153dAnders Carlsson 25159f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallvoid CGObjCGNU::EmitSynchronizedStmt(CodeGenFunction &CGF, 2516f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall const ObjCAtSynchronizedStmt &S) { 25179735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall EmitAtSynchronizedStmt(CGF, S, SyncEnterFn, SyncExitFn); 2518f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall} 25195dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 25205dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 25219f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallvoid CGObjCGNU::EmitTryStmt(CodeGenFunction &CGF, 2522f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall const ObjCAtTryStmt &S) { 2523f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // Unlike the Apple non-fragile runtimes, which also uses 2524f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // unwind-based zero cost exceptions, the GNU Objective C runtime's 2525f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // EH support isn't a veneer over C++ EH. Instead, exception 2526f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // objects are created by __objc_exception_throw and destroyed by 2527f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // the personality function; this avoids the need for bracketing 2528f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // catch handlers with calls to __blah_begin_catch/__blah_end_catch 2529f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // (or even _Unwind_DeleteException), but probably doesn't 2530f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // interoperate very well with foreign exceptions. 25319735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // 253280558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall // In Objective-C++ mode, we actually emit something equivalent to the C++ 25339735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // exception handler. 25349735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall EmitTryCatchStmt(CGF, S, EnterCatchFn, ExitCatchFn, ExceptionReThrowFn); 25359735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall return ; 253664d5d6c5903157c521af496479d06dc26032d718Anders Carlsson} 253764d5d6c5903157c521af496479d06dc26032d718Anders Carlsson 25389f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallvoid CGObjCGNU::EmitThrowStmt(CodeGenFunction &CGF, 253949f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar const ObjCAtThrowStmt &S) { 25405dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Value *ExceptionAsObject; 25415dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 25425dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (const Expr *ThrowExpr = S.getThrowExpr()) { 25432b014d6c0c6b8ac94b416ac37dfc7931f20777a7John McCall llvm::Value *Exception = CGF.EmitObjCThrowOperand(ThrowExpr); 25441e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian ExceptionAsObject = Exception; 25455dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } else { 25461eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump assert((!CGF.ObjCEHValueStack.empty() && CGF.ObjCEHValueStack.back()) && 25475dc0867af17b3bd6f567897433853b2b4767446cChris Lattner "Unexpected rethrow outside @catch block."); 25485dc0867af17b3bd6f567897433853b2b4767446cChris Lattner ExceptionAsObject = CGF.ObjCEHValueStack.back(); 25495dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 2550578faa837b552403e2002b97fdfbfde14f2448e5Benjamin Kramer ExceptionAsObject = CGF.Builder.CreateBitCast(ExceptionAsObject, IdTy); 2551c972c92f757957bf414c6195b1f2ae25a2b4dd37Eli Friedman CGF.EmitCallOrInvoke(ExceptionThrowFn, ExceptionAsObject); 2552c972c92f757957bf414c6195b1f2ae25a2b4dd37Eli Friedman CGF.Builder.CreateUnreachable(); 25535dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.ClearInsertionPoint(); 255464d5d6c5903157c521af496479d06dc26032d718Anders Carlsson} 255564d5d6c5903157c521af496479d06dc26032d718Anders Carlsson 25569f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallllvm::Value * CGObjCGNU::EmitObjCWeakRead(CodeGenFunction &CGF, 25571eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *AddrWeakObj) { 2558ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall CGBuilderTy B = CGF.Builder; 255931fc0c1a16dabd397dd3323fb0dbe7052b87abd0David Chisnall AddrWeakObj = EnforceType(B, AddrWeakObj, PtrToIdTy); 2560ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall return B.CreateCall(WeakReadFn, AddrWeakObj); 25616dc2317b59cb1180a59f6c283d96b7a5dfeb5307Fariborz Jahanian} 25626dc2317b59cb1180a59f6c283d96b7a5dfeb5307Fariborz Jahanian 25639f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallvoid CGObjCGNU::EmitObjCWeakAssign(CodeGenFunction &CGF, 25641eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *src, llvm::Value *dst) { 2565ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall CGBuilderTy B = CGF.Builder; 2566ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall src = EnforceType(B, src, IdTy); 2567ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall dst = EnforceType(B, dst, PtrToIdTy); 2568ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall B.CreateCall2(WeakAssignFn, src, dst); 25693e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian} 25703e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian 25719f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallvoid CGObjCGNU::EmitObjCGlobalAssign(CodeGenFunction &CGF, 2572021a7a63984f0f912dc9e9dae2a1b3e1509a40ceFariborz Jahanian llvm::Value *src, llvm::Value *dst, 2573021a7a63984f0f912dc9e9dae2a1b3e1509a40ceFariborz Jahanian bool threadlocal) { 2574ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall CGBuilderTy B = CGF.Builder; 2575ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall src = EnforceType(B, src, IdTy); 2576ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall dst = EnforceType(B, dst, PtrToIdTy); 2577021a7a63984f0f912dc9e9dae2a1b3e1509a40ceFariborz Jahanian if (!threadlocal) 2578021a7a63984f0f912dc9e9dae2a1b3e1509a40ceFariborz Jahanian B.CreateCall2(GlobalAssignFn, src, dst); 2579021a7a63984f0f912dc9e9dae2a1b3e1509a40ceFariborz Jahanian else 2580021a7a63984f0f912dc9e9dae2a1b3e1509a40ceFariborz Jahanian // FIXME. Add threadloca assign API 2581b219cfc4d75f0a03630b7c4509ef791b7e97b2c8David Blaikie llvm_unreachable("EmitObjCGlobalAssign - Threal Local API NYI"); 258258626500527695865683d1d65053743de8770b60Fariborz Jahanian} 258358626500527695865683d1d65053743de8770b60Fariborz Jahanian 25849f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallvoid CGObjCGNU::EmitObjCIvarAssign(CodeGenFunction &CGF, 25856c7a1f364796ce1acb988714e9e42076d1ce332eFariborz Jahanian llvm::Value *src, llvm::Value *dst, 25866c7a1f364796ce1acb988714e9e42076d1ce332eFariborz Jahanian llvm::Value *ivarOffset) { 2587ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall CGBuilderTy B = CGF.Builder; 2588ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall src = EnforceType(B, src, IdTy); 2589b44eda31a214ad88616acbe28c3f0a70268adc6cDavid Chisnall dst = EnforceType(B, dst, IdTy); 2590ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall B.CreateCall3(IvarAssignFn, src, dst, ivarOffset); 25917eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanian} 25927eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanian 25939f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallvoid CGObjCGNU::EmitObjCStrongCastAssign(CodeGenFunction &CGF, 25941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *src, llvm::Value *dst) { 2595ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall CGBuilderTy B = CGF.Builder; 2596ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall src = EnforceType(B, src, IdTy); 2597ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall dst = EnforceType(B, dst, PtrToIdTy); 2598ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall B.CreateCall2(StrongCastAssignFn, src, dst); 259958626500527695865683d1d65053743de8770b60Fariborz Jahanian} 260058626500527695865683d1d65053743de8770b60Fariborz Jahanian 26019f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallvoid CGObjCGNU::EmitGCMemmoveCollectable(CodeGenFunction &CGF, 26021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *DestPtr, 2603082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian llvm::Value *SrcPtr, 260455bcace250e1ff366e4482714b344b8cbc8be5f3Fariborz Jahanian llvm::Value *Size) { 2605ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall CGBuilderTy B = CGF.Builder; 260668e5e1331d99140ae5dd7b27c3dd28618827dfc8David Chisnall DestPtr = EnforceType(B, DestPtr, PtrTy); 260768e5e1331d99140ae5dd7b27c3dd28618827dfc8David Chisnall SrcPtr = EnforceType(B, SrcPtr, PtrTy); 2608ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall 260955bcace250e1ff366e4482714b344b8cbc8be5f3Fariborz Jahanian B.CreateCall3(MemMoveFn, DestPtr, SrcPtr, Size); 2610082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian} 2611082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian 26129cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanianllvm::GlobalVariable *CGObjCGNU::ObjCIvarOffsetVariable( 26139cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCInterfaceDecl *ID, 26149cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCIvarDecl *Ivar) { 26159cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const std::string Name = "__objc_ivar_offset_" + ID->getNameAsString() 26169cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian + '.' + Ivar->getNameAsString(); 26179cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // Emit the variable and initialize it with what we think the correct value 26189cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // is. This allows code compiled with non-fragile ivars to work correctly 26199cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // when linked against code which isn't (most of the time). 26208a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::GlobalVariable *IvarOffsetPointer = TheModule.getNamedGlobal(Name); 26218a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall if (!IvarOffsetPointer) { 2622e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // This will cause a run-time crash if we accidentally use it. A value of 2623e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // 0 would seem more sensible, but will silently overwrite the isa pointer 2624e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // causing a great deal of confusion. 2625e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall uint64_t Offset = -1; 2626e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // We can't call ComputeIvarBaseOffset() here if we have the 2627e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // implementation, because it will create an invalid ASTRecordLayout object 2628e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // that we are then stuck with forever, so we only initialize the ivar 2629e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // offset variable with a guess if we only have the interface. The 2630e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // initializer will be reset later anyway, when we are generating the class 2631e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // description. 2632e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall if (!CGM.getContext().getObjCImplementation( 2633cb421fa690da545b58a720abe5f1c49b166dbde7Dan Gohman const_cast<ObjCInterfaceDecl *>(ID))) 2634d901da531433254210a08e8b1f9e1ad049b340aaDavid Chisnall Offset = ComputeIvarBaseOffset(CGM, ID, Ivar); 2635d901da531433254210a08e8b1f9e1ad049b340aaDavid Chisnall 263649de5289acea91c9d224c9aadd4d527e8f9fdaffDavid Chisnall llvm::ConstantInt *OffsetGuess = llvm::ConstantInt::get(Int32Ty, Offset, 2637243f108a7c5dc4733e9ef6b7b7c2cd0465cf2104Richard Trieu /*isSigned*/true); 26388a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // Don't emit the guess in non-PIC code because the linker will not be able 26398a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // to replace it with the real version for a library. In non-PIC code you 26408a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // must compile with the fragile ABI if you want to use ivars from a 26411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // GCC-compiled class. 26425e219cf7f896873c1c1e64b9e87a7dade99debbaChandler Carruth if (CGM.getLangOpts().PICLevel || CGM.getLangOpts().PIELevel) { 26438a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::GlobalVariable *IvarOffsetGV = new llvm::GlobalVariable(TheModule, 2644917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall Int32Ty, false, 26458a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::GlobalValue::PrivateLinkage, OffsetGuess, Name+".guess"); 26468a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall IvarOffsetPointer = new llvm::GlobalVariable(TheModule, 26478a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall IvarOffsetGV->getType(), false, llvm::GlobalValue::LinkOnceAnyLinkage, 26488a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall IvarOffsetGV, Name); 26498a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall } else { 26508a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall IvarOffsetPointer = new llvm::GlobalVariable(TheModule, 26513c0ef8cc0dc246bd3083e8cdd63005e8873d36d2Benjamin Kramer llvm::Type::getInt32PtrTy(VMContext), false, 26523c0ef8cc0dc246bd3083e8cdd63005e8873d36d2Benjamin Kramer llvm::GlobalValue::ExternalLinkage, 0, Name); 26538a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall } 26549cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 26558a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall return IvarOffsetPointer; 26569cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian} 26579cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian 26589f6614e3c5d34998dd5a5cc6faf0746dcd611d49David ChisnallLValue CGObjCGNU::EmitObjCValueForIvar(CodeGenFunction &CGF, 2659598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian QualType ObjectTy, 2660598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian llvm::Value *BaseValue, 2661598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian const ObjCIvarDecl *Ivar, 2662598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian unsigned CVRQualifiers) { 2663c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall const ObjCInterfaceDecl *ID = 2664c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall ObjectTy->getAs<ObjCObjectType>()->getInterface(); 26659777687562c338601c2f17906e65e1c1a0aad96fDaniel Dunbar return EmitValueForIvarAtOffset(CGF, ID, BaseValue, Ivar, CVRQualifiers, 26669777687562c338601c2f17906e65e1c1a0aad96fDaniel Dunbar EmitIvarOffset(CGF, ID, Ivar)); 26670bb20361a321593887f067515dd04cf109f4c74aFariborz Jahanian} 2668bb1c8600218b3244340331165fc7cba7bf227655Mike Stump 26699cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanianstatic const ObjCInterfaceDecl *FindIvarInterface(ASTContext &Context, 26709cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCInterfaceDecl *OID, 26719cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCIvarDecl *OIVD) { 2672db8264e4c5ffd7af6fbad4ca4306bd382bb02691Jordy Rose for (const ObjCIvarDecl *next = OID->all_declared_ivar_begin(); next; 2673db8264e4c5ffd7af6fbad4ca4306bd382bb02691Jordy Rose next = next->getNextIvar()) { 2674db8264e4c5ffd7af6fbad4ca4306bd382bb02691Jordy Rose if (OIVD == next) 26759cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian return OID; 26769cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 26771eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 26789cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // Otherwise check in the super class. 26799cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian if (const ObjCInterfaceDecl *Super = OID->getSuperClass()) 26809cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian return FindIvarInterface(Context, Super, OIVD); 26811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 26829cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian return 0; 26839cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian} 26840bb20361a321593887f067515dd04cf109f4c74aFariborz Jahanian 26859f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallllvm::Value *CGObjCGNU::EmitIvarOffset(CodeGenFunction &CGF, 26862a03192a02dbf4fdff438d1e658356bde871aba4Daniel Dunbar const ObjCInterfaceDecl *Interface, 2687f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian const ObjCIvarDecl *Ivar) { 2688260611a32535c851237926bfcf78869b13c07d5bJohn McCall if (CGM.getLangOpts().ObjCRuntime.isNonFragile()) { 26899cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian Interface = FindIvarInterface(CGM.getContext(), Interface, Ivar); 269063ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall if (RuntimeVersion < 10) 269163ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall return CGF.Builder.CreateZExtOrBitCast( 269263ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall CGF.Builder.CreateLoad(CGF.Builder.CreateLoad( 269363ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall ObjCIvarOffsetVariable(Interface, Ivar), false, "ivar")), 269463ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall PtrDiffTy); 269563ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall std::string name = "__objc_ivar_offset_value_" + 269663ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall Interface->getNameAsString() +"." + Ivar->getNameAsString(); 269763ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall llvm::Value *Offset = TheModule.getGlobalVariable(name); 269863ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall if (!Offset) 269963ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall Offset = new llvm::GlobalVariable(TheModule, IntTy, 27003fc81d32314eca98b51846f493a8bc77cf14a701David Chisnall false, llvm::GlobalValue::LinkOnceAnyLinkage, 27013fc81d32314eca98b51846f493a8bc77cf14a701David Chisnall llvm::Constant::getNullValue(IntTy), name); 27026614845b4f6724da8c6aca14ea720dbd157883a7David Chisnall Offset = CGF.Builder.CreateLoad(Offset); 27036614845b4f6724da8c6aca14ea720dbd157883a7David Chisnall if (Offset->getType() != PtrDiffTy) 27046614845b4f6724da8c6aca14ea720dbd157883a7David Chisnall Offset = CGF.Builder.CreateZExtOrBitCast(Offset, PtrDiffTy); 27056614845b4f6724da8c6aca14ea720dbd157883a7David Chisnall return Offset; 27069cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 27079777687562c338601c2f17906e65e1c1a0aad96fDaniel Dunbar uint64_t Offset = ComputeIvarBaseOffset(CGF.CGM, Interface, Ivar); 2708243f108a7c5dc4733e9ef6b7b7c2cd0465cf2104Richard Trieu return llvm::ConstantInt::get(PtrDiffTy, Offset, /*isSigned*/true); 2709f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian} 2710f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian 27119f6614e3c5d34998dd5a5cc6faf0746dcd611d49David ChisnallCGObjCRuntime * 27129f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallclang::CodeGen::CreateGNUObjCRuntime(CodeGenModule &CGM) { 2713260611a32535c851237926bfcf78869b13c07d5bJohn McCall switch (CGM.getLangOpts().ObjCRuntime.getKind()) { 271411d3f4cc27e6b923fc32481dc1bb5ec46c7d1f4bDavid Chisnall case ObjCRuntime::GNUstep: 27159f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall return new CGObjCGNUstep(CGM); 2716260611a32535c851237926bfcf78869b13c07d5bJohn McCall 271711d3f4cc27e6b923fc32481dc1bb5ec46c7d1f4bDavid Chisnall case ObjCRuntime::GCC: 2718260611a32535c851237926bfcf78869b13c07d5bJohn McCall return new CGObjCGCC(CGM); 2719260611a32535c851237926bfcf78869b13c07d5bJohn McCall 2720f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall case ObjCRuntime::ObjFW: 2721f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall return new CGObjCObjFW(CGM); 2722f7226fbe677a9c7578fa0613491ed15c6dc6a5e1John McCall 2723260611a32535c851237926bfcf78869b13c07d5bJohn McCall case ObjCRuntime::FragileMacOSX: 2724260611a32535c851237926bfcf78869b13c07d5bJohn McCall case ObjCRuntime::MacOSX: 2725260611a32535c851237926bfcf78869b13c07d5bJohn McCall case ObjCRuntime::iOS: 2726260611a32535c851237926bfcf78869b13c07d5bJohn McCall llvm_unreachable("these runtimes are not GNU runtimes"); 2727260611a32535c851237926bfcf78869b13c07d5bJohn McCall } 2728260611a32535c851237926bfcf78869b13c07d5bJohn McCall llvm_unreachable("bad runtime"); 27290f984268b05edab2cc555a427c441baa9c252658Chris Lattner} 2730