CGObjCGNU.cpp revision e3c944a9f620dacb0c29d16e7d61c8e7fca10963
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" 215dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 22dce1406f1c1f572cfd61c494546572d63461c741Chris Lattner#include "clang/AST/ASTContext.h" 23e91593ef084479340582b2ba177b44be50a717b7Daniel Dunbar#include "clang/AST/Decl.h" 24af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar#include "clang/AST/DeclObjC.h" 2519cc4abea06a9b49e0e16a50d335c064cd723572Anders Carlsson#include "clang/AST/RecordLayout.h" 2616f0049415ec596504891259e2a83e19871c0d52Chris Lattner#include "clang/AST/StmtObjC.h" 279f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall#include "clang/Basic/SourceManager.h" 289f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall#include "clang/Basic/FileManager.h" 295dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 305dc0867af17b3bd6f567897433853b2b4767446cChris Lattner#include "llvm/Intrinsics.h" 310f984268b05edab2cc555a427c441baa9c252658Chris Lattner#include "llvm/Module.h" 32c6cd5fd3eae71f8841504a396563343cfaaf503eDavid Chisnall#include "llvm/LLVMContext.h" 330f984268b05edab2cc555a427c441baa9c252658Chris Lattner#include "llvm/ADT/SmallVector.h" 3420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov#include "llvm/ADT/StringMap.h" 3580558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall#include "llvm/Support/CallSite.h" 367ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar#include "llvm/Support/Compiler.h" 377ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar#include "llvm/Target/TargetData.h" 385dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 395f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner#include <cstdarg> 40e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner 41e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner 42dce1406f1c1f572cfd61c494546572d63461c741Chris Lattnerusing namespace clang; 4346f45b9bec4a265ad8400a538e5ec3a5683617f1Daniel Dunbarusing namespace CodeGen; 4420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 450f984268b05edab2cc555a427c441baa9c252658Chris Lattner 460f984268b05edab2cc555a427c441baa9c252658Chris Lattnernamespace { 4781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// Class that lazily initialises the runtime function. Avoids inserting the 4881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// types and the function declaration into a module if they're not used, and 4981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// avoids constructing the type more than once if it's used more than once. 509f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallclass LazyRuntimeFunction { 519f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall CodeGenModule *CGM; 529cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner std::vector<llvm::Type*> ArgTys; 539f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall const char *FunctionName; 54789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnall llvm::Constant *Function; 559f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall public: 5681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Constructor leaves this class uninitialized, because it is intended to 5781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// be used as a field in another class and not all of the types that are 5881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// used as arguments will necessarily be available at construction time. 599f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction() : CGM(0), FunctionName(0), Function(0) {} 609f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 6181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Initialises the lazy function with the name, return type, and the types 6281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// of the arguments. 639f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall END_WITH_NULL 649f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall void init(CodeGenModule *Mod, const char *name, 659cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::Type *RetTy, ...) { 669f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall CGM =Mod; 679f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall FunctionName = name; 689f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Function = 0; 699735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall ArgTys.clear(); 709f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall va_list Args; 719f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall va_start(Args, RetTy); 729cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner while (llvm::Type *ArgTy = va_arg(Args, llvm::Type*)) 739f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall ArgTys.push_back(ArgTy); 749f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall va_end(Args); 759f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // Push the return type on at the end so we can pop it off easily 769f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall ArgTys.push_back(RetTy); 779f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall } 7881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Overloaded cast operator, allows the class to be implicitly cast to an 7981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM constant. 80789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnall operator llvm::Constant*() { 819f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall if (!Function) { 829735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall if (0 == FunctionName) return 0; 839735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // We put the return type on the end of the vector, so pop it back off 842acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Type *RetTy = ArgTys.back(); 859f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall ArgTys.pop_back(); 869f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::FunctionType *FTy = llvm::FunctionType::get(RetTy, ArgTys, false); 879f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Function = 88789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnall cast<llvm::Constant>(CGM->CreateRuntimeFunction(FTy, FunctionName)); 899735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // We won't need to use the types again, so we may as well clean up the 909735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // vector now 919f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall ArgTys.resize(0); 929f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall } 939f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall return Function; 949f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall } 95789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnall operator llvm::Function*() { 965f0bcc4c3f4a75375a3571e71bffebf603f4ca67David Chisnall return cast<llvm::Function>((llvm::Constant*)*this); 97789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnall } 985f0bcc4c3f4a75375a3571e71bffebf603f4ca67David Chisnall 999f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall}; 1009f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 1019f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 10281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// GNU Objective-C runtime code generation. This class implements the parts of 10381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// Objective-C support that are specific to the GNU family of runtimes (GCC and 10481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// GNUstep). 1059f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallclass CGObjCGNU : public CGObjCRuntime { 106c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnallprotected: 10781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// The module that is using this class 1089f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall CodeGenModule &CGM; 10981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// The LLVM module into which output is inserted 1100f984268b05edab2cc555a427c441baa9c252658Chris Lattner llvm::Module &TheModule; 11181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// strut objc_super. Used for sending messages to super. This structure 11281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// contains the receiver (object) and the expected class. 1132acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::StructType *ObjCSuperTy; 11481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// struct objc_super*. The type of the argument to the superclass message 11581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// lookup functions. 1162acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::PointerType *PtrToObjCSuperTy; 11781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM type for selectors. Opaque pointer (i8*) unless a header declaring 11881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// SEL is included in a header somewhere, in which case it will be whatever 11981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// type is declared in that header, most likely {i8*, i8*}. 1209cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::PointerType *SelectorTy; 12181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM i8 type. Cached here to avoid repeatedly getting it in all of the 12281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// places where it's used 1232acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::IntegerType *Int8Ty; 12481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Pointer to i8 - LLVM type of char*, for all of the places where the 12581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// runtime needs to deal with C strings. 1269cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::PointerType *PtrToInt8Ty; 12781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Instance Method Pointer type. This is a pointer to a function that takes, 12881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// at a minimum, an object and a selector, and is the generic type for 12981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Objective-C methods. Due to differences between variadic / non-variadic 13081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// calling conventions, it must always be cast to the correct type before 13181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// actually being used. 1329cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::PointerType *IMPTy; 13381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Type of an untyped Objective-C object. Clang treats id as a built-in type 13481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// when compiling Objective-C code, so this may be an opaque pointer (i8*), 13581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// but if the runtime header declaring it is included then it may be a 13681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// pointer to a structure. 1379cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::PointerType *IdTy; 13881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Pointer to a pointer to an Objective-C object. Used in the new ABI 13981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// message lookup function and some GC-related functions. 1402acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::PointerType *PtrToIdTy; 14181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// The clang type of id. Used when using the clang CGCall infrastructure to 14281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// call Objective-C methods. 143ead608af31b6c9abeae1ca6d0b75094dac4641c0John McCall CanQualType ASTIdTy; 14481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM type for C int type. 1459cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::IntegerType *IntTy; 14681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM type for an opaque pointer. This is identical to PtrToInt8Ty, but is 14781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// used in the code to document the difference between i8* meaning a pointer 14881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// to a C string and i8* meaning a pointer to some opaque type. 1499cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::PointerType *PtrTy; 15081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM type for C long type. The runtime uses this in a lot of places where 15181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// it should be using intptr_t, but we can't fix this without breaking 15281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// compatibility with GCC... 153ef6de3da8572607f786303c07150daa6e140ab19Jay Foad llvm::IntegerType *LongTy; 15481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM type for C size_t. Used in various runtime data structures. 1552acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::IntegerType *SizeTy; 15681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM type for C ptrdiff_t. Mainly used in property accessor functions. 1572acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::IntegerType *PtrDiffTy; 15881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM type for C int*. Used for GCC-ABI-compatible non-fragile instance 15981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// variables. 1602acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::PointerType *PtrToIntTy; 16181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM type for Objective-C BOOL type. 1622acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Type *BoolTy; 163917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// 32-bit integer type, to save us needing to look it up every time it's used. 164917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::IntegerType *Int32Ty; 165917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// 64-bit integer type, to save us needing to look it up every time it's used. 166917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::IntegerType *Int64Ty; 16781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Metadata kind used to tie method lookups to message sends. The GNUstep 16881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// runtime provides some LLVM passes that can use this to do things like 16981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// automatic IMP caching and speculative inlining. 170c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall unsigned msgSendMDKind; 17181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Helper function that generates a constant string and returns a pointer to 17281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// the start of the string. The result of this function can be used anywhere 17381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// where the C code specifies const char*. 1749735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::Constant *MakeConstantString(const std::string &Str, 1759735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall const std::string &Name="") { 1769735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::Constant *ConstStr = CGM.GetAddrOfConstantCString(Str, Name.c_str()); 177a5c04344fa70d6eec34344760c1fe511e16f2d76Jay Foad return llvm::ConstantExpr::getGetElementPtr(ConstStr, Zeros); 1789735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall } 17981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Emits a linkonce_odr string, whose name is the prefix followed by the 18081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// string value. This allows the linker to combine the strings between 18181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// different modules. Used for EH typeinfo names, selector strings, and a 18281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// few other things. 1839735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::Constant *ExportUniqueString(const std::string &Str, 1849735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall const std::string prefix) { 1859735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall std::string name = prefix + Str; 1869735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::Constant *ConstStr = TheModule.getGlobalVariable(name); 1879735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall if (!ConstStr) { 1889735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::Constant *value = llvm::ConstantArray::get(VMContext, Str, true); 1899735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall ConstStr = new llvm::GlobalVariable(TheModule, value->getType(), true, 1909735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::GlobalValue::LinkOnceODRLinkage, value, prefix + Str); 1919735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall } 192a5c04344fa70d6eec34344760c1fe511e16f2d76Jay Foad return llvm::ConstantExpr::getGetElementPtr(ConstStr, Zeros); 1939735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall } 19481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Generates a global structure, initialized by the elements in the vector. 19581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// The element types must match the types of the structure elements in the 19681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// first argument. 1972acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::GlobalVariable *MakeGlobal(llvm::StructType *Ty, 198917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::ArrayRef<llvm::Constant*> V, 1995f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef Name="", 2009735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::GlobalValue::LinkageTypes linkage 2019735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall =llvm::GlobalValue::InternalLinkage) { 2029735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::Constant *C = llvm::ConstantStruct::get(Ty, V); 2039735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall return new llvm::GlobalVariable(TheModule, Ty, false, 2049735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall linkage, C, Name); 2059735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall } 20681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Generates a global array. The vector must contain the same number of 20781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// elements that the array type declares, of the type specified as the array 20881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// element type. 2092acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::GlobalVariable *MakeGlobal(llvm::ArrayType *Ty, 210917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::ArrayRef<llvm::Constant*> V, 2115f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef Name="", 2129735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::GlobalValue::LinkageTypes linkage 2139735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall =llvm::GlobalValue::InternalLinkage) { 2149735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::Constant *C = llvm::ConstantArray::get(Ty, V); 2159735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall return new llvm::GlobalVariable(TheModule, Ty, false, 2169735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall linkage, C, Name); 2179735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall } 21881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Generates a global array, inferring the array type from the specified 21981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// element type and the size of the initialiser. 2202acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::GlobalVariable *MakeGlobalArray(llvm::Type *Ty, 221917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::ArrayRef<llvm::Constant*> V, 2225f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef Name="", 2239735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::GlobalValue::LinkageTypes linkage 2249735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall =llvm::GlobalValue::InternalLinkage) { 2259735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall llvm::ArrayType *ArrayTy = llvm::ArrayType::get(Ty, V.size()); 2269735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall return MakeGlobal(ArrayTy, V, Name, linkage); 2279735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall } 22881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Ensures that the value has the required type, by inserting a bitcast if 22981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// required. This function lets us avoid inserting bitcasts that are 23081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// redundant. 2312acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Value* EnforceType(CGBuilderTy B, llvm::Value *V, llvm::Type *Ty){ 232c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall if (V->getType() == Ty) return V; 233c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall return B.CreateBitCast(V, Ty); 234c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } 235c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // Some zeros used for GEPs in lots of places. 236c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Constant *Zeros[2]; 23781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Null pointer value. Mainly used as a terminator in various arrays. 238c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Constant *NULLPtr; 23981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// LLVM context. 240c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::LLVMContext &VMContext; 241c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnallprivate: 24281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Placeholder for the class. Lots of things refer to the class before we've 24381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// actually emitted it. We use this alias as a placeholder, and then replace 24481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// it with a pointer to the class structure before finally emitting the 24581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// module. 2465efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar llvm::GlobalAlias *ClassPtrAlias; 24781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Placeholder for the metaclass. Lots of things refer to the class before 24881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// we've / actually emitted it. We use this alias as a placeholder, and then 24981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// replace / it with a pointer to the metaclass structure before finally 25081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// emitting the / module. 2515efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar llvm::GlobalAlias *MetaClassPtrAlias; 25281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// All of the classes that have been generated for this compilation units. 25320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Classes; 25481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// All of the categories that have been generated for this compilation units. 25520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Categories; 25681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// All of the Objective-C constant strings that have been generated for this 25781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// compilation units. 25820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> ConstantStrings; 25981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Map from string values to Objective-C constant strings in the output. 26081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Used to prevent emitting Objective-C strings more than once. This should 26181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// not be required at all - CodeGenModule should manage this list. 26248272a078e54d501cb05edd797c54b8e82ceb520David Chisnall llvm::StringMap<llvm::Constant*> ObjCStrings; 26381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// All of the protocols that have been declared. 26420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::StringMap<llvm::Constant*> ExistingProtocols; 26581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// For each variant of a selector, we store the type encoding and a 26681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// placeholder value. For an untyped selector, the type will be the empty 26781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// string. Selector references are all done via the module's selector table, 26881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// so we create an alias as a placeholder and then replace it with the real 26981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// value later. 2709f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall typedef std::pair<std::string, llvm::GlobalAlias*> TypedSelector; 27181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Type of the selector map. This is roughly equivalent to the structure 27281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// used in the GNUstep runtime, which maintains a list of all of the valid 27381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// types for a selector in a table. 2745f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner typedef llvm::DenseMap<Selector, SmallVector<TypedSelector, 2> > 2759f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SelectorMap; 27681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// A map from selectors to selector types. This allows us to emit all 27781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// selectors of the same name and type together. 2789f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SelectorMap SelectorTable; 2799f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 28081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Selectors related to memory management. When compiling in GC mode, we 28181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// omit these. 282ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall Selector RetainSel, ReleaseSel, AutoreleaseSel; 28381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Runtime functions used for memory management in GC mode. Note that clang 28481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// supports code generation for calling these functions, but neither GNU 28581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// runtime actually supports this API properly yet. 2869f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction IvarAssignFn, StrongCastAssignFn, MemMoveFn, WeakReadFn, 2879f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall WeakAssignFn, GlobalAssignFn; 2889f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 2899735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnallprotected: 29081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Function used for throwing Objective-C exceptions. 2919f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction ExceptionThrowFn; 29281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Function used for rethrowing exceptions, used at the end of @finally or 29381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// @synchronize blocks. 2949735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall LazyRuntimeFunction ExceptionReThrowFn; 29581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Function called when entering a catch function. This is required for 29681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// differentiating Objective-C exceptions and foreign exceptions. 2979735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall LazyRuntimeFunction EnterCatchFn; 29881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Function called when exiting from a catch block. Used to do exception 29981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// cleanup. 3009735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall LazyRuntimeFunction ExitCatchFn; 30181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Function called when entering an @synchronize block. Acquires the lock. 3029f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction SyncEnterFn; 30381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Function called when exiting an @synchronize block. Releases the lock. 3049f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction SyncExitFn; 3059f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 3069735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnallprivate: 3079735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall 30881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Function called if fast enumeration detects that the collection is 30981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// modified during the update. 3109f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction EnumerationMutationFn; 31181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Function for implementing synthesized property getters that return an 31281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// object. 3139f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction GetPropertyFn; 31481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Function for implementing synthesized property setters that return an 31581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// object. 3169f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction SetPropertyFn; 31781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Function used for non-object declared property getters. 3189f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction GetStructPropertyFn; 31981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Function used for non-object declared property setters. 3209f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall LazyRuntimeFunction SetStructPropertyFn; 3219f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 32281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// The version of the runtime that this class targets. Must match the 32381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// version in the runtime. 324a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall int RuntimeVersion; 32581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// The version of the protocol class. Used to differentiate between ObjC1 32681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// and ObjC2 protocols. Objective-C 1 protocols can not contain optional 32781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// components and can not contain declared properties. We always emit 32881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Objective-C 2 property structures, but we have to pretend that they're 32981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Objective-C 1 property structures when targeting the GCC runtime or it 33081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// will abort. 3319f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall const int ProtocolVersion; 33220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovprivate: 33381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Generates an instance variable list structure. This is a structure 33481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// containing a size and an array of structures containing instance variable 33581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// metadata. This is used purely for introspection in the fragile ABI. In 33681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// the non-fragile ABI, it's used for instance variable fixup. 33720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateIvarList( 3385f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner const SmallVectorImpl<llvm::Constant *> &IvarNames, 3395f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner const SmallVectorImpl<llvm::Constant *> &IvarTypes, 3405f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner const SmallVectorImpl<llvm::Constant *> &IvarOffsets); 34181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Generates a method list structure. This is a structure containing a size 34281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// and an array of structures containing method metadata. 34381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// 34481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// This structure is used by both classes and categories, and contains a next 34581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// pointer allowing them to be chained together in a linked list. 3465f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner llvm::Constant *GenerateMethodList(const StringRef &ClassName, 3475f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner const StringRef &CategoryName, 3485f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner const SmallVectorImpl<Selector> &MethodSels, 3495f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner const SmallVectorImpl<llvm::Constant *> &MethodTypes, 35020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov bool isClassMethodList); 35181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Emits an empty protocol. This is used for @protocol() where no protocol 35281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// is found. The runtime will (hopefully) fix up the pointer to refer to the 35381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// real protocol. 354f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::Constant *GenerateEmptyProtocol(const std::string &ProtocolName); 35581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Generates a list of property metadata structures. This follows the same 35681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// pattern as method and instance variable metadata lists. 357d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *GeneratePropertyList(const ObjCImplementationDecl *OID, 3585f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVectorImpl<Selector> &InstanceMethodSels, 3595f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVectorImpl<llvm::Constant*> &InstanceMethodTypes); 36081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Generates a list of referenced protocols. Classes, categories, and 36181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// protocols all use this structure. 36220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateProtocolList( 3635f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner const SmallVectorImpl<std::string> &Protocols); 36481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// To ensure that all protocols are seen by the runtime, we add a category on 36581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// a class defined in the runtime, declaring no methods, but adopting the 36681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// protocols. This is a horribly ugly hack, but it allows us to collect all 36781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// of the protocols without changing the ABI. 368d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian void GenerateProtocolHolderCategory(void); 36981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Generates a class structure. 37020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateClassStructure( 37120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MetaClass, 37220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SuperClass, 37320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov unsigned info, 374d002cc6fc5b72bf00e3b7b4571ccf0f23c789b4bChris Lattner const char *Name, 37520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Version, 37620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *InstanceSize, 37720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *IVars, 37820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Methods, 379d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *Protocols, 380d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *IvarOffsets, 3818c757f9ea33dccff4da7810e0c1bda59c19ddc9aDavid Chisnall llvm::Constant *Properties, 382917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::Constant *StrongIvarBitmap, 383917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::Constant *WeakIvarBitmap, 3848c757f9ea33dccff4da7810e0c1bda59c19ddc9aDavid Chisnall bool isMeta=false); 38581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Generates a method list. This is used by protocols to define the required 38681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// and optional methods. 38720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *GenerateProtocolMethodList( 3885f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner const SmallVectorImpl<llvm::Constant *> &MethodNames, 3895f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner const SmallVectorImpl<llvm::Constant *> &MethodTypes); 39081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Returns a selector with the specified type encoding. An empty string is 39181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// used to return an untyped selector (with the types field set to NULL). 3929f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::Value *GetSelector(CGBuilderTy &Builder, Selector Sel, 3939f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall const std::string &TypeEncoding, bool lval); 39481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Returns the variable used to store the offset of an instance variable. 3959cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian llvm::GlobalVariable *ObjCIvarOffsetVariable(const ObjCInterfaceDecl *ID, 3969cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCIvarDecl *Ivar); 39781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Emits a reference to a class. This allows the linker to object if there 39881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// is no class of the matching name. 3992a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner void EmitClassRef(const std::string &className); 400c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall /// Emits a pointer to the named class 401d3fc7296ae95353173bae25ee4dd3ecf4d6dced1David Chisnall llvm::Value *GetClassNamed(CGBuilderTy &Builder, const std::string &Name, 402d3fc7296ae95353173bae25ee4dd3ecf4d6dced1David Chisnall bool isWeak); 403c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnallprotected: 40481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Looks up the method for sending a message to the specified object. This 40581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// mechanism differs between the GCC and GNU runtimes, so this method must be 40681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// overridden in subclasses. 407c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall virtual llvm::Value *LookupIMP(CodeGenFunction &CGF, 408c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *&Receiver, 409c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *cmd, 410c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::MDNode *node) = 0; 411917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// Looks up the method for sending a message to a superclass. This 412917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// mechanism differs between the GCC and GNU runtimes, so this method must 413917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// be overridden in subclasses. 414c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall virtual llvm::Value *LookupIMPSuper(CodeGenFunction &CGF, 415c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *ObjCSuper, 416c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *cmd) = 0; 417917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// Libobjc2 uses a bitfield representation where small(ish) bitfields are 418917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// stored in a 64-bit value with the low bit set to 1 and the remaining 63 419917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// bits set to their values, LSB first, while larger ones are stored in a 420917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// structure of this / form: 421917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// 422917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// struct { int32_t length; int32_t values[length]; }; 423917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// 424917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// The values in the array are stored in host-endian format, with the least 425917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// significant bit being assumed to come first in the bitfield. Therefore, 426917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// a bitfield with the 64th bit set will be (int64_t)&{ 2, [0, 1<<31] }, 427917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall /// while a bitfield / with the 63rd bit set will be 1<<64. 428917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::Constant *MakeBitField(llvm::SmallVectorImpl<bool> &bits); 4290f984268b05edab2cc555a427c441baa9c252658Chris Lattnerpublic: 4309f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall CGObjCGNU(CodeGenModule &cgm, unsigned runtimeABIVersion, 4319f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall unsigned protocolClassVersion); 4329f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 4330d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall virtual llvm::Constant *GenerateConstantString(const StringLiteral *); 4349f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 4359f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual RValue 4369f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall GenerateMessageSend(CodeGenFunction &CGF, 437ef072fd2f3347cfd857d6eb787b245b950771430John McCall ReturnValueSlot Return, 4387f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar QualType ResultType, 4397f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar Selector Sel, 440f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar llvm::Value *Receiver, 441df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian const CallArgList &CallArgs, 442c6cd5fd3eae71f8841504a396563343cfaaf503eDavid Chisnall const ObjCInterfaceDecl *Class, 443df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian const ObjCMethodDecl *Method); 4449f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual RValue 4459f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall GenerateMessageSendSuper(CodeGenFunction &CGF, 446ef072fd2f3347cfd857d6eb787b245b950771430John McCall ReturnValueSlot Return, 4477f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar QualType ResultType, 4487f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar Selector Sel, 449f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar const ObjCInterfaceDecl *Class, 4507ce77920a35060f1c8dd72e541e42ce296ccd168Fariborz Jahanian bool isCategoryImpl, 451f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar llvm::Value *Receiver, 45219cd87eb5fb3c197e631ce08fd52c446c4d4e8f1Daniel Dunbar bool IsClassMessage, 453d6c93d703541c992e06eb9a59a2d826a30da65b2Daniel Dunbar const CallArgList &CallArgs, 454d6c93d703541c992e06eb9a59a2d826a30da65b2Daniel Dunbar const ObjCMethodDecl *Method); 45545d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbar virtual llvm::Value *GetClass(CGBuilderTy &Builder, 456ddb2a3d55a24a1dbdf9152621642d9a4b4fc2f61Daniel Dunbar const ObjCInterfaceDecl *OID); 45703b2960c14aede6ac82bdef32247094ebb72fa69Fariborz Jahanian virtual llvm::Value *GetSelector(CGBuilderTy &Builder, Selector Sel, 45803b2960c14aede6ac82bdef32247094ebb72fa69Fariborz Jahanian bool lval = false); 4596d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbar virtual llvm::Value *GetSelector(CGBuilderTy &Builder, const ObjCMethodDecl 4606d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbar *Method); 461cf5abc7ba032bd35158e4d75b0bc92a482fc67e8Fariborz Jahanian virtual llvm::Constant *GetEHType(QualType T); 4621eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump virtual llvm::Function *GenerateMethod(const ObjCMethodDecl *OMD, 464679a502d462ef819e6175b58e255ca3f3391e7cfFariborz Jahanian const ObjCContainerDecl *CD); 4657ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar virtual void GenerateCategory(const ObjCCategoryImplDecl *CMD); 4667ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar virtual void GenerateClass(const ObjCImplementationDecl *ClassDecl); 46745d196b8387dcefc4df26cda114fa34c6528e928Daniel Dunbar virtual llvm::Value *GenerateProtocolRef(CGBuilderTy &Builder, 468af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar const ObjCProtocolDecl *PD); 469af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar virtual void GenerateProtocol(const ObjCProtocolDecl *PD); 47020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov virtual llvm::Function *ModuleInitFunction(); 471789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnall virtual llvm::Constant *GetPropertyGetFunction(); 472789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnall virtual llvm::Constant *GetPropertySetFunction(); 473789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnall virtual llvm::Constant *GetSetStructFunction(); 474789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnall virtual llvm::Constant *GetGetStructFunction(); 475309a4368cd299cff30ab22709e2b772cf8059e45Daniel Dunbar virtual llvm::Constant *EnumerationMutationFunction(); 4761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4779f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual void EmitTryStmt(CodeGenFunction &CGF, 478f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall const ObjCAtTryStmt &S); 4799f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual void EmitSynchronizedStmt(CodeGenFunction &CGF, 480f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall const ObjCAtSynchronizedStmt &S); 4819f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual void EmitThrowStmt(CodeGenFunction &CGF, 48264d5d6c5903157c521af496479d06dc26032d718Anders Carlsson const ObjCAtThrowStmt &S); 4839f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual llvm::Value * EmitObjCWeakRead(CodeGenFunction &CGF, 4846dc2317b59cb1180a59f6c283d96b7a5dfeb5307Fariborz Jahanian llvm::Value *AddrWeakObj); 4859f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual void EmitObjCWeakAssign(CodeGenFunction &CGF, 4863e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian llvm::Value *src, llvm::Value *dst); 4879f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual void EmitObjCGlobalAssign(CodeGenFunction &CGF, 488021a7a63984f0f912dc9e9dae2a1b3e1509a40ceFariborz Jahanian llvm::Value *src, llvm::Value *dest, 489021a7a63984f0f912dc9e9dae2a1b3e1509a40ceFariborz Jahanian bool threadlocal=false); 4909f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual void EmitObjCIvarAssign(CodeGenFunction &CGF, 4916c7a1f364796ce1acb988714e9e42076d1ce332eFariborz Jahanian llvm::Value *src, llvm::Value *dest, 4926c7a1f364796ce1acb988714e9e42076d1ce332eFariborz Jahanian llvm::Value *ivarOffset); 4939f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual void EmitObjCStrongCastAssign(CodeGenFunction &CGF, 49458626500527695865683d1d65053743de8770b60Fariborz Jahanian llvm::Value *src, llvm::Value *dest); 4959f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual void EmitGCMemmoveCollectable(CodeGenFunction &CGF, 4961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *DestPtr, 497082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian llvm::Value *SrcPtr, 49855bcace250e1ff366e4482714b344b8cbc8be5f3Fariborz Jahanian llvm::Value *Size); 4999f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual LValue EmitObjCValueForIvar(CodeGenFunction &CGF, 500598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian QualType ObjectTy, 501598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian llvm::Value *BaseValue, 502598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian const ObjCIvarDecl *Ivar, 503598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian unsigned CVRQualifiers); 5049f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual llvm::Value *EmitIvarOffset(CodeGenFunction &CGF, 5052a03192a02dbf4fdff438d1e658356bde871aba4Daniel Dunbar const ObjCInterfaceDecl *Interface, 506f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian const ObjCIvarDecl *Ivar); 507c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall virtual llvm::Value *EmitNSAutoreleasePoolClassRef(CGBuilderTy &Builder); 5089f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall virtual llvm::Constant *BuildGCBlockLayout(CodeGenModule &CGM, 5096b5a61b6dc400027fd793dcadceeb9da944a37eaJohn McCall const CGBlockInfo &blockInfo) { 51089ecd41e0a6bfb3b0913dbe41c3c666340b308c7Fariborz Jahanian return NULLPtr; 51189ecd41e0a6bfb3b0913dbe41c3c666340b308c7Fariborz Jahanian } 5126f40e2244b0590f144c5ceee07981a962fbbc72eFariborz Jahanian 5136f40e2244b0590f144c5ceee07981a962fbbc72eFariborz Jahanian virtual llvm::GlobalVariable *GetClassGlobal(const std::string &Name) { 5146f40e2244b0590f144c5ceee07981a962fbbc72eFariborz Jahanian return 0; 5156f40e2244b0590f144c5ceee07981a962fbbc72eFariborz Jahanian } 5160f984268b05edab2cc555a427c441baa9c252658Chris Lattner}; 51781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// Class representing the legacy GCC Objective-C ABI. This is the default when 51881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// -fobjc-nonfragile-abi is not specified. 51981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// 52081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// The GCC ABI target actually generates code that is approximately compatible 52181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// with the new GNUstep runtime ABI, but refrains from using any features that 52281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// would not work with the GCC runtime. For example, clang always generates 52381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// the extended form of the class structure, and the extra fields are simply 52481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// ignored by GCC libobjc. 5259f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallclass CGObjCGCC : public CGObjCGNU { 52681a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// The GCC ABI message lookup function. Returns an IMP pointing to the 52781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// method implementation for this message. 528c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall LazyRuntimeFunction MsgLookupFn; 52981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// The GCC ABI superclass message lookup function. Takes a pointer to a 53081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// structure describing the receiver and the class, and a selector as 53181a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// arguments. Returns the IMP for the corresponding method. 532c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall LazyRuntimeFunction MsgLookupSuperFn; 533c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnallprotected: 534c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall virtual llvm::Value *LookupIMP(CodeGenFunction &CGF, 535c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *&Receiver, 536c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *cmd, 537c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::MDNode *node) { 538c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall CGBuilderTy &Builder = CGF.Builder; 539c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *imp = Builder.CreateCall2(MsgLookupFn, 540c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall EnforceType(Builder, Receiver, IdTy), 541c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall EnforceType(Builder, cmd, SelectorTy)); 542c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall cast<llvm::CallInst>(imp)->setMetadata(msgSendMDKind, node); 543c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall return imp; 544c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } 545c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall virtual llvm::Value *LookupIMPSuper(CodeGenFunction &CGF, 546c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *ObjCSuper, 547c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *cmd) { 548c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall CGBuilderTy &Builder = CGF.Builder; 549c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *lookupArgs[] = {EnforceType(Builder, ObjCSuper, 550c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall PtrToObjCSuperTy), cmd}; 5514c7d9f1507d0f102bd4133bba63348636facd469Jay Foad return Builder.CreateCall(MsgLookupSuperFn, lookupArgs); 552c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } 5539f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall public: 554c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall CGObjCGCC(CodeGenModule &Mod) : CGObjCGNU(Mod, 8, 2) { 555c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // IMP objc_msg_lookup(id, SEL); 556c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall MsgLookupFn.init(&CGM, "objc_msg_lookup", IMPTy, IdTy, SelectorTy, NULL); 557c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // IMP objc_msg_lookup_super(struct objc_super*, SEL); 558c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall MsgLookupSuperFn.init(&CGM, "objc_msg_lookup_super", IMPTy, 559c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall PtrToObjCSuperTy, SelectorTy, NULL); 560c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } 5619f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall}; 56281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall/// Class used when targeting the new GNUstep runtime ABI. 5639f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallclass CGObjCGNUstep : public CGObjCGNU { 56481a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// The slot lookup function. Returns a pointer to a cacheable structure 56581a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// that contains (among other things) the IMP. 566c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall LazyRuntimeFunction SlotLookupFn; 56781a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// The GNUstep ABI superclass message lookup function. Takes a pointer to 56881a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// a structure describing the receiver and the class, and a selector as 56981a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// arguments. Returns the slot for the corresponding method. Superclass 57081a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// message lookup rarely changes, so this is a good caching opportunity. 571c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall LazyRuntimeFunction SlotLookupSuperFn; 57281a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// Type of an slot structure pointer. This is returned by the various 57381a65f576842a1d02b1e3db21c14652c60a36448David Chisnall /// lookup functions. 574c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Type *SlotTy; 575c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall protected: 576c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall virtual llvm::Value *LookupIMP(CodeGenFunction &CGF, 577c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *&Receiver, 578c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *cmd, 579c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::MDNode *node) { 580c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall CGBuilderTy &Builder = CGF.Builder; 581c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Function *LookupFn = SlotLookupFn; 582c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 583c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // Store the receiver on the stack so that we can reload it later 584c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *ReceiverPtr = CGF.CreateTempAlloca(Receiver->getType()); 585c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall Builder.CreateStore(Receiver, ReceiverPtr); 586c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 587c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *self; 588c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 589c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall if (isa<ObjCMethodDecl>(CGF.CurCodeDecl)) { 590c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall self = CGF.LoadObjCSelf(); 591c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } else { 592c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall self = llvm::ConstantPointerNull::get(IdTy); 593c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } 594c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 595c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // The lookup function is guaranteed not to capture the receiver pointer. 596c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall LookupFn->setDoesNotCapture(1); 597c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 598c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::CallInst *slot = 599c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall Builder.CreateCall3(LookupFn, 600c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall EnforceType(Builder, ReceiverPtr, PtrToIdTy), 601c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall EnforceType(Builder, cmd, SelectorTy), 602c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall EnforceType(Builder, self, IdTy)); 603c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall slot->setOnlyReadsMemory(); 604c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall slot->setMetadata(msgSendMDKind, node); 605c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 606c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // Load the imp from the slot 607c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *imp = Builder.CreateLoad(Builder.CreateStructGEP(slot, 4)); 608c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 609c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // The lookup function may have changed the receiver, so make sure we use 610c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // the new one. 611c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall Receiver = Builder.CreateLoad(ReceiverPtr, true); 612c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall return imp; 613c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } 614c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall virtual llvm::Value *LookupIMPSuper(CodeGenFunction &CGF, 615c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *ObjCSuper, 616c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *cmd) { 617c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall CGBuilderTy &Builder = CGF.Builder; 618c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *lookupArgs[] = {ObjCSuper, cmd}; 619c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 6204c7d9f1507d0f102bd4133bba63348636facd469Jay Foad llvm::CallInst *slot = Builder.CreateCall(SlotLookupSuperFn, lookupArgs); 621c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall slot->setOnlyReadsMemory(); 622c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 623c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall return Builder.CreateLoad(Builder.CreateStructGEP(slot, 4)); 624c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } 6259f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall public: 626c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall CGObjCGNUstep(CodeGenModule &Mod) : CGObjCGNU(Mod, 9, 3) { 6277650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *SlotStructTy = llvm::StructType::get(PtrTy, 628c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall PtrTy, PtrTy, IntTy, IMPTy, NULL); 629c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall SlotTy = llvm::PointerType::getUnqual(SlotStructTy); 630c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // Slot_t objc_msg_lookup_sender(id *receiver, SEL selector, id sender); 631c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall SlotLookupFn.init(&CGM, "objc_msg_lookup_sender", SlotTy, PtrToIdTy, 632c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall SelectorTy, IdTy, NULL); 633c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // Slot_t objc_msg_lookup_super(struct objc_super*, SEL); 634c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall SlotLookupSuperFn.init(&CGM, "objc_slot_lookup_super", SlotTy, 635c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall PtrToObjCSuperTy, SelectorTy, NULL); 6369735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // If we're in ObjC++ mode, then we want to make 6379735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall if (CGM.getLangOptions().CPlusPlus) { 6389cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::Type *VoidTy = llvm::Type::getVoidTy(VMContext); 6399735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // void *__cxa_begin_catch(void *e) 6409735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall EnterCatchFn.init(&CGM, "__cxa_begin_catch", PtrTy, PtrTy, NULL); 6419735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // void __cxa_end_catch(void) 6424bd5d09e3a233ed23ec6f913166e4b75d8de215cDavid Chisnall ExitCatchFn.init(&CGM, "__cxa_end_catch", VoidTy, NULL); 6439735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // void _Unwind_Resume_or_Rethrow(void*) 644978d415adab4ef423f5aef430ddfdbefc4cfb000David Chisnall ExceptionReThrowFn.init(&CGM, "_Unwind_Resume_or_Rethrow", VoidTy, PtrTy, NULL); 6459735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall } 646c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } 6479f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall}; 6489f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 6490f984268b05edab2cc555a427c441baa9c252658Chris Lattner} // end anonymous namespace 6500f984268b05edab2cc555a427c441baa9c252658Chris Lattner 65120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 6522a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner/// Emits a reference to a dummy variable which is emitted with each class. 6532a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner/// This ensures that a linker error will be generated when trying to link 6542a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner/// together modules where a referenced class is not defined. 655bb1c8600218b3244340331165fc7cba7bf227655Mike Stumpvoid CGObjCGNU::EmitClassRef(const std::string &className) { 6562a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner std::string symbolRef = "__objc_class_ref_" + className; 6572a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner // Don't emit two copies of the same symbol 658bb1c8600218b3244340331165fc7cba7bf227655Mike Stump if (TheModule.getGlobalVariable(symbolRef)) 659bb1c8600218b3244340331165fc7cba7bf227655Mike Stump return; 6602a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner std::string symbolName = "__objc_class_name_" + className; 6612a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner llvm::GlobalVariable *ClassSymbol = TheModule.getGlobalVariable(symbolName); 6622a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner if (!ClassSymbol) { 6631c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson ClassSymbol = new llvm::GlobalVariable(TheModule, LongTy, false, 6641c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson llvm::GlobalValue::ExternalLinkage, 0, symbolName); 6652a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner } 6661c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson new llvm::GlobalVariable(TheModule, ClassSymbol->getType(), true, 667f35271b8677a5f31498b89587b1da42a06dd46fdChris Lattner llvm::GlobalValue::WeakAnyLinkage, ClassSymbol, symbolRef); 6682a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner} 66920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 6705f9e272e632e951b1efe824cd16acb4d96077930Chris Lattnerstatic std::string SymbolNameForMethod(const StringRef &ClassName, 6715f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner const StringRef &CategoryName, const Selector MethodName, 6729f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall bool isClassMethod) { 6739f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall std::string MethodNameColonStripped = MethodName.getAsString(); 674d346736dfe5ef584a2d0c9d27d217408ee394b9bDavid Chisnall std::replace(MethodNameColonStripped.begin(), MethodNameColonStripped.end(), 675d346736dfe5ef584a2d0c9d27d217408ee394b9bDavid Chisnall ':', '_'); 6765f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner return (Twine(isClassMethod ? "_c_" : "_i_") + ClassName + "_" + 6779f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall CategoryName + "_" + MethodNameColonStripped).str(); 67887935a8d5c0eeda8ad62815f4fc815ad25c7cd8eDavid Chisnall} 67920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 6809f6614e3c5d34998dd5a5cc6faf0746dcd611d49David ChisnallCGObjCGNU::CGObjCGNU(CodeGenModule &cgm, unsigned runtimeABIVersion, 6819f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall unsigned protocolClassVersion) 682c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall : CGM(cgm), TheModule(CGM.getModule()), VMContext(cgm.getLLVMContext()), 683c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall ClassPtrAlias(0), MetaClassPtrAlias(0), RuntimeVersion(runtimeABIVersion), 684c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall ProtocolVersion(protocolClassVersion) { 685c6cd5fd3eae71f8841504a396563343cfaaf503eDavid Chisnall 686c6cd5fd3eae71f8841504a396563343cfaaf503eDavid Chisnall msgSendMDKind = VMContext.getMDKindID("GNUObjCMessageSend"); 687c6cd5fd3eae71f8841504a396563343cfaaf503eDavid Chisnall 6889f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall CodeGenTypes &Types = CGM.getTypes(); 689e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner IntTy = cast<llvm::IntegerType>( 6909f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Types.ConvertType(CGM.getContext().IntTy)); 691e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner LongTy = cast<llvm::IntegerType>( 6929f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Types.ConvertType(CGM.getContext().LongTy)); 6938fac25d33b13e25f512dd921d4d5a4b565f5d175David Chisnall SizeTy = cast<llvm::IntegerType>( 6949f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Types.ConvertType(CGM.getContext().getSizeType())); 6958fac25d33b13e25f512dd921d4d5a4b565f5d175David Chisnall PtrDiffTy = cast<llvm::IntegerType>( 6969f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Types.ConvertType(CGM.getContext().getPointerDiffType())); 6978fac25d33b13e25f512dd921d4d5a4b565f5d175David Chisnall BoolTy = CGM.getTypes().ConvertType(CGM.getContext().BoolTy); 6981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 699d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Int8Ty = llvm::Type::getInt8Ty(VMContext); 700d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // C string type. Used in lots of places. 701d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrToInt8Ty = llvm::PointerType::getUnqual(Int8Ty); 702d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 7034a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Zeros[0] = llvm::ConstantInt::get(LongTy, 0); 70420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Zeros[1] = Zeros[0]; 705d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian NULLPtr = llvm::ConstantPointerNull::get(PtrToInt8Ty); 706391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner // Get the selector Type. 7070d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall QualType selTy = CGM.getContext().getObjCSelType(); 7080d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall if (QualType() == selTy) { 7090d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall SelectorTy = PtrToInt8Ty; 7100d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall } else { 7110d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall SelectorTy = cast<llvm::PointerType>(CGM.getTypes().ConvertType(selTy)); 7120d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall } 713e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner 71496e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson PtrToIntTy = llvm::PointerType::getUnqual(IntTy); 715391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner PtrTy = PtrToInt8Ty; 7161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 717917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall Int32Ty = llvm::Type::getInt32Ty(VMContext); 718917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall Int64Ty = llvm::Type::getInt64Ty(VMContext); 719917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall 720391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner // Object type 7217bcf6c3e098e808282cc96309c02c08ab6229940David Chisnall QualType UnqualIdTy = CGM.getContext().getObjCIdType(); 7227bcf6c3e098e808282cc96309c02c08ab6229940David Chisnall ASTIdTy = CanQualType(); 7237bcf6c3e098e808282cc96309c02c08ab6229940David Chisnall if (UnqualIdTy != QualType()) { 7247bcf6c3e098e808282cc96309c02c08ab6229940David Chisnall ASTIdTy = CGM.getContext().getCanonicalType(UnqualIdTy); 7250d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall IdTy = cast<llvm::PointerType>(CGM.getTypes().ConvertType(ASTIdTy)); 7267bcf6c3e098e808282cc96309c02c08ab6229940David Chisnall } else { 7277bcf6c3e098e808282cc96309c02c08ab6229940David Chisnall IdTy = PtrToInt8Ty; 7280d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall } 729ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall PtrToIdTy = llvm::PointerType::getUnqual(IdTy); 7301eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7317650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner ObjCSuperTy = llvm::StructType::get(IdTy, IdTy, NULL); 732c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall PtrToObjCSuperTy = llvm::PointerType::getUnqual(ObjCSuperTy); 733c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 7349cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::Type *VoidTy = llvm::Type::getVoidTy(VMContext); 7359f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 7369f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // void objc_exception_throw(id); 7379f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall ExceptionThrowFn.init(&CGM, "objc_exception_throw", VoidTy, IdTy, NULL); 7389735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall ExceptionReThrowFn.init(&CGM, "objc_exception_throw", VoidTy, IdTy, NULL); 7399f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // int objc_sync_enter(id); 7409f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SyncEnterFn.init(&CGM, "objc_sync_enter", IntTy, IdTy, NULL); 7419f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // int objc_sync_exit(id); 7429f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SyncExitFn.init(&CGM, "objc_sync_exit", IntTy, IdTy, NULL); 7439f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 7449f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // void objc_enumerationMutation (id) 7459f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall EnumerationMutationFn.init(&CGM, "objc_enumerationMutation", VoidTy, 7469f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall IdTy, NULL); 7479f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 7489f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // id objc_getProperty(id, SEL, ptrdiff_t, BOOL) 7499f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall GetPropertyFn.init(&CGM, "objc_getProperty", IdTy, IdTy, SelectorTy, 7509f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall PtrDiffTy, BoolTy, NULL); 7519f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // void objc_setProperty(id, SEL, ptrdiff_t, id, BOOL, BOOL) 7529f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SetPropertyFn.init(&CGM, "objc_setProperty", VoidTy, IdTy, SelectorTy, 7539f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall PtrDiffTy, IdTy, BoolTy, BoolTy, NULL); 7549f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // void objc_setPropertyStruct(void*, void*, ptrdiff_t, BOOL, BOOL) 7559f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall GetStructPropertyFn.init(&CGM, "objc_getPropertyStruct", VoidTy, PtrTy, PtrTy, 7569f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall PtrDiffTy, BoolTy, BoolTy, NULL); 7579f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // void objc_setPropertyStruct(void*, void*, ptrdiff_t, BOOL, BOOL) 7589f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SetStructPropertyFn.init(&CGM, "objc_setPropertyStruct", VoidTy, PtrTy, PtrTy, 7599f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall PtrDiffTy, BoolTy, BoolTy, NULL); 7609f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 761391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner // IMP type 7629cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::Type *IMPArgs[] = { IdTy, SelectorTy }; 763c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall IMPTy = llvm::PointerType::getUnqual(llvm::FunctionType::get(IdTy, IMPArgs, 764c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall true)); 765ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall 766f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall const LangOptions &Opts = CGM.getLangOptions(); 767e289d81369914678db386f6aa86faf8f178e245dDouglas Gregor if ((Opts.getGC() != LangOptions::NonGC) || Opts.ObjCAutoRefCount) 768f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall RuntimeVersion = 10; 769f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall 7709735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // Don't bother initialising the GC stuff unless we're compiling in GC mode 771e289d81369914678db386f6aa86faf8f178e245dDouglas Gregor if (Opts.getGC() != LangOptions::NonGC) { 772a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall // This is a bit of an hack. We should sort this out by having a proper 773a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall // CGObjCGNUstep subclass for GC, but we may want to really support the old 774a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall // ABI and GC added in ObjectiveC2.framework, so we fudge it a bit for now 775ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // Get selectors needed in GC mode 776ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall RetainSel = GetNullarySelector("retain", CGM.getContext()); 777ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall ReleaseSel = GetNullarySelector("release", CGM.getContext()); 778ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall AutoreleaseSel = GetNullarySelector("autorelease", CGM.getContext()); 779ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall 780ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // Get functions needed in GC mode 781ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall 782ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // id objc_assign_ivar(id, id, ptrdiff_t); 7839f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall IvarAssignFn.init(&CGM, "objc_assign_ivar", IdTy, IdTy, IdTy, PtrDiffTy, 7849f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall NULL); 785ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // id objc_assign_strongCast (id, id*) 7869f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall StrongCastAssignFn.init(&CGM, "objc_assign_strongCast", IdTy, IdTy, 7879f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall PtrToIdTy, NULL); 788ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // id objc_assign_global(id, id*); 7899f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall GlobalAssignFn.init(&CGM, "objc_assign_global", IdTy, IdTy, PtrToIdTy, 7909f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall NULL); 791ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // id objc_assign_weak(id, id*); 7929f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall WeakAssignFn.init(&CGM, "objc_assign_weak", IdTy, IdTy, PtrToIdTy, NULL); 793ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // id objc_read_weak(id*); 7949f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall WeakReadFn.init(&CGM, "objc_read_weak", IdTy, PtrToIdTy, NULL); 795ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall // void *objc_memmove_collectable(void*, void *, size_t); 7969f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall MemMoveFn.init(&CGM, "objc_memmove_collectable", PtrTy, PtrTy, PtrTy, 7979f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SizeTy, NULL); 798ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 79920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 800bb1c8600218b3244340331165fc7cba7bf227655Mike Stump 801c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnallllvm::Value *CGObjCGNU::GetClassNamed(CGBuilderTy &Builder, 802d3fc7296ae95353173bae25ee4dd3ecf4d6dced1David Chisnall const std::string &Name, 803d3fc7296ae95353173bae25ee4dd3ecf4d6dced1David Chisnall bool isWeak) { 804c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall llvm::Value *ClassName = CGM.GetAddrOfConstantCString(Name); 80541d63ed274d1bf7ba7459f218c8f6a385fc5c6d6David Chisnall // With the incompatible ABI, this will need to be replaced with a direct 80641d63ed274d1bf7ba7459f218c8f6a385fc5c6d6David Chisnall // reference to the class symbol. For the compatible nonfragile ABI we are 80741d63ed274d1bf7ba7459f218c8f6a385fc5c6d6David Chisnall // still performing this lookup at run time but emitting the symbol for the 80841d63ed274d1bf7ba7459f218c8f6a385fc5c6d6David Chisnall // class externally so that we can make the switch later. 809c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall // 810c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall // Libobjc2 contains an LLVM pass that replaces calls to objc_lookup_class 811c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall // with memoized versions or with static references if it's safe to do so. 812d3fc7296ae95353173bae25ee4dd3ecf4d6dced1David Chisnall if (!isWeak) 813d3fc7296ae95353173bae25ee4dd3ecf4d6dced1David Chisnall EmitClassRef(Name); 814ddb2a3d55a24a1dbdf9152621642d9a4b4fc2f61Daniel Dunbar ClassName = Builder.CreateStructGEP(ClassName, 0); 815ddb2a3d55a24a1dbdf9152621642d9a4b4fc2f61Daniel Dunbar 81620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ClassLookupFn = 817da549e8995c447542d5631b8b67fcc3a9582797aJay Foad CGM.CreateRuntimeFunction(llvm::FunctionType::get(IdTy, PtrToInt8Ty, true), 81826c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian "objc_lookup_class"); 81920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return Builder.CreateCall(ClassLookupFn, ClassName); 820391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner} 821391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner 822c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall// This has to perform the lookup every time, since posing and related 823c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall// techniques can modify the name -> class mapping. 824c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnallllvm::Value *CGObjCGNU::GetClass(CGBuilderTy &Builder, 825c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall const ObjCInterfaceDecl *OID) { 826d3fc7296ae95353173bae25ee4dd3ecf4d6dced1David Chisnall return GetClassNamed(Builder, OID->getNameAsString(), OID->isWeakImported()); 827c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall} 828c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnallllvm::Value *CGObjCGNU::EmitNSAutoreleasePoolClassRef(CGBuilderTy &Builder) { 829d3fc7296ae95353173bae25ee4dd3ecf4d6dced1David Chisnall return GetClassNamed(Builder, "NSAutoreleasePool", false); 830c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall} 831c7aed3b9fbfbb6e85c234a4ba6f00cab1901f2f7David Chisnall 83203b2960c14aede6ac82bdef32247094ebb72fa69Fariborz Jahanianllvm::Value *CGObjCGNU::GetSelector(CGBuilderTy &Builder, Selector Sel, 8339f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall const std::string &TypeEncoding, bool lval) { 8349f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 8355f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<TypedSelector, 2> &Types = SelectorTable[Sel]; 8369f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::GlobalAlias *SelValue = 0; 8379f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 8389f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 8395f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner for (SmallVectorImpl<TypedSelector>::iterator i = Types.begin(), 8409f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall e = Types.end() ; i!=e ; i++) { 8419f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall if (i->first == TypeEncoding) { 8429f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SelValue = i->second; 8439f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall break; 8449f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall } 8459f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall } 8469f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall if (0 == SelValue) { 847c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall SelValue = new llvm::GlobalAlias(SelectorTy, 8489f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::GlobalValue::PrivateLinkage, 8499f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall ".objc_selector_"+Sel.getAsString(), NULL, 8509f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall &TheModule); 8519f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Types.push_back(TypedSelector(TypeEncoding, SelValue)); 8529f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall } 8539f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 854c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall if (lval) { 855c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *tmp = Builder.CreateAlloca(SelValue->getType()); 856c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall Builder.CreateStore(SelValue, tmp); 857c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall return tmp; 858c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall } 859c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall return SelValue; 8609f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall} 8619f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 8629f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallllvm::Value *CGObjCGNU::GetSelector(CGBuilderTy &Builder, Selector Sel, 8639f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall bool lval) { 8649f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall return GetSelector(Builder, Sel, std::string(), lval); 865df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian} 866df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian 8676d5a1c28593443f3973ef38f8fa042d59182412dDaniel Dunbarllvm::Value *CGObjCGNU::GetSelector(CGBuilderTy &Builder, const ObjCMethodDecl 868df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian *Method) { 869df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian std::string SelTypes; 870df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian CGM.getContext().getObjCEncodingForMethodDecl(Method, SelTypes); 8719f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall return GetSelector(Builder, Method->getSelector(), SelTypes, false); 8728e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner} 8738e67b63530b4f39a48bc12d97376f373a6901279Chris Lattner 874cf5abc7ba032bd35158e4d75b0bc92a482fc67e8Fariborz Jahanianllvm::Constant *CGObjCGNU::GetEHType(QualType T) { 8759735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall if (!CGM.getLangOptions().CPlusPlus) { 8769735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall if (T->isObjCIdType() 8779735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall || T->isObjCQualifiedIdType()) { 8789735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // With the old ABI, there was only one kind of catchall, which broke 8799735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // foreign exceptions. With the new ABI, we use __objc_id_typeinfo as 8809735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // a pointer indicating object catchalls, and NULL to indicate real 8819735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // catchalls 8829735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall if (CGM.getLangOptions().ObjCNonFragileABI) { 8839735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall return MakeConstantString("@id"); 8849735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall } else { 8859735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall return 0; 8869735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall } 8879735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall } 8889735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall 8899735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // All other types should be Objective-C interface pointer types. 8909735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall const ObjCObjectPointerType *OPT = 8919735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall T->getAs<ObjCObjectPointerType>(); 8929735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall assert(OPT && "Invalid @catch type."); 8939735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall const ObjCInterfaceDecl *IDecl = 8949735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall OPT->getObjectType()->getInterface(); 8959735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall assert(IDecl && "Invalid @catch type."); 8969735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall return MakeConstantString(IDecl->getIdentifier()->getName()); 8979735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall } 89880558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall // For Objective-C++, we want to provide the ability to catch both C++ and 89980558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall // Objective-C objects in the same function. 90080558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall 90180558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall // There's a particular fixed type info for 'id'. 90280558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall if (T->isObjCIdType() || 90380558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall T->isObjCQualifiedIdType()) { 90480558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall llvm::Constant *IDEHType = 90580558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall CGM.getModule().getGlobalVariable("__objc_id_type_info"); 90680558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall if (!IDEHType) 90780558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall IDEHType = 90880558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall new llvm::GlobalVariable(CGM.getModule(), PtrToInt8Ty, 90980558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall false, 91080558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall llvm::GlobalValue::ExternalLinkage, 91180558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall 0, "__objc_id_type_info"); 91280558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall return llvm::ConstantExpr::getBitCast(IDEHType, PtrToInt8Ty); 91380558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall } 91480558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall 91580558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall const ObjCObjectPointerType *PT = 91680558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall T->getAs<ObjCObjectPointerType>(); 91780558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall assert(PT && "Invalid @catch type."); 91880558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall const ObjCInterfaceType *IT = PT->getInterfaceType(); 91980558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall assert(IT && "Invalid @catch type."); 92080558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall std::string className = IT->getDecl()->getIdentifier()->getName(); 92180558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall 92280558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall std::string typeinfoName = "__objc_eh_typeinfo_" + className; 92380558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall 92480558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall // Return the existing typeinfo if it exists 92580558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall llvm::Constant *typeinfo = TheModule.getGlobalVariable(typeinfoName); 92680558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall if (typeinfo) return typeinfo; 92780558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall 92880558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall // Otherwise create it. 92980558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall 93080558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall // vtable for gnustep::libobjc::__objc_class_type_info 93180558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall // It's quite ugly hard-coding this. Ideally we'd generate it using the host 93280558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall // platform's name mangling. 93380558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall const char *vtableName = "_ZTVN7gnustep7libobjc22__objc_class_type_infoE"; 93480558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall llvm::Constant *Vtable = TheModule.getGlobalVariable(vtableName); 93580558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall if (!Vtable) { 93680558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall Vtable = new llvm::GlobalVariable(TheModule, PtrToInt8Ty, true, 93780558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall llvm::GlobalValue::ExternalLinkage, 0, vtableName); 93880558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall } 93980558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall llvm::Constant *Two = llvm::ConstantInt::get(IntTy, 2); 940a5c04344fa70d6eec34344760c1fe511e16f2d76Jay Foad Vtable = llvm::ConstantExpr::getGetElementPtr(Vtable, Two); 94180558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall Vtable = llvm::ConstantExpr::getBitCast(Vtable, PtrToInt8Ty); 94280558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall 94380558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall llvm::Constant *typeName = 94480558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall ExportUniqueString(className, "__objc_eh_typename_"); 94580558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall 94680558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall std::vector<llvm::Constant*> fields; 94780558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall fields.push_back(Vtable); 94880558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall fields.push_back(typeName); 94980558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall llvm::Constant *TI = 9507650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner MakeGlobal(llvm::StructType::get(PtrToInt8Ty, PtrToInt8Ty, 95180558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall NULL), fields, "__objc_eh_typeinfo_" + className, 95280558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall llvm::GlobalValue::LinkOnceODRLinkage); 95380558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall return llvm::ConstantExpr::getBitCast(TI, PtrToInt8Ty); 9545a180397870944548aaadeaebf58e415885b9489John McCall} 9555a180397870944548aaadeaebf58e415885b9489John McCall 95620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// Generate an NSConstantString object. 9570d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnallllvm::Constant *CGObjCGNU::GenerateConstantString(const StringLiteral *SL) { 95848272a078e54d501cb05edd797c54b8e82ceb520David Chisnall 9592f4eaef37476ae6891ede8ba215d0f6fd093629bBenjamin Kramer std::string Str = SL->getString().str(); 9600d13f6fdbdd6f06e2449b8834dda53334abd399aDavid Chisnall 96148272a078e54d501cb05edd797c54b8e82ceb520David Chisnall // Look for an existing one 96248272a078e54d501cb05edd797c54b8e82ceb520David Chisnall llvm::StringMap<llvm::Constant*>::iterator old = ObjCStrings.find(Str); 96348272a078e54d501cb05edd797c54b8e82ceb520David Chisnall if (old != ObjCStrings.end()) 96448272a078e54d501cb05edd797c54b8e82ceb520David Chisnall return old->getValue(); 96548272a078e54d501cb05edd797c54b8e82ceb520David Chisnall 96620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Ivars; 96720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Ivars.push_back(NULLPtr); 96813fd7e5111032f54b538dd66d035b0ccc1f82467Chris Lattner Ivars.push_back(MakeConstantString(Str)); 9694a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Ivars.push_back(llvm::ConstantInt::get(IntTy, Str.size())); 97020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ObjCStr = MakeGlobal( 9717650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType::get(PtrToInt8Ty, PtrToInt8Ty, IntTy, NULL), 97220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Ivars, ".objc_str"); 97348272a078e54d501cb05edd797c54b8e82ceb520David Chisnall ObjCStr = llvm::ConstantExpr::getBitCast(ObjCStr, PtrToInt8Ty); 97448272a078e54d501cb05edd797c54b8e82ceb520David Chisnall ObjCStrings[Str] = ObjCStr; 97548272a078e54d501cb05edd797c54b8e82ceb520David Chisnall ConstantStrings.push_back(ObjCStr); 97620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return ObjCStr; 97720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 97820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 97920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov///Generates a message send where the super is the receiver. This is a message 98020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov///send to self with special delivery semantics indicating which class's method 98120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov///should be called. 9829f6614e3c5d34998dd5a5cc6faf0746dcd611d49David ChisnallRValue 9839f6614e3c5d34998dd5a5cc6faf0746dcd611d49David ChisnallCGObjCGNU::GenerateMessageSendSuper(CodeGenFunction &CGF, 984ef072fd2f3347cfd857d6eb787b245b950771430John McCall ReturnValueSlot Return, 9857f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar QualType ResultType, 9867f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar Selector Sel, 987f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar const ObjCInterfaceDecl *Class, 9887ce77920a35060f1c8dd72e541e42ce296ccd168Fariborz Jahanian bool isCategoryImpl, 989f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar llvm::Value *Receiver, 99019cd87eb5fb3c197e631ce08fd52c446c4d4e8f1Daniel Dunbar bool IsClassMessage, 991d6c93d703541c992e06eb9a59a2d826a30da65b2Daniel Dunbar const CallArgList &CallArgs, 992d6c93d703541c992e06eb9a59a2d826a30da65b2Daniel Dunbar const ObjCMethodDecl *Method) { 9930bbe0cfd374d0e564c4570b5e84a77f886c32d52David Chisnall CGBuilderTy &Builder = CGF.Builder; 994e289d81369914678db386f6aa86faf8f178e245dDouglas Gregor if (CGM.getLangOptions().getGC() == LangOptions::GCOnly) { 995ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall if (Sel == RetainSel || Sel == AutoreleaseSel) { 9960bbe0cfd374d0e564c4570b5e84a77f886c32d52David Chisnall return RValue::get(EnforceType(Builder, Receiver, 9970bbe0cfd374d0e564c4570b5e84a77f886c32d52David Chisnall CGM.getTypes().ConvertType(ResultType))); 998ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 999ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall if (Sel == ReleaseSel) { 1000ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall return RValue::get(0); 1001ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 1002ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 1003db831948f32217ece8410099f9982ef900c3b3c3David Chisnall 1004db831948f32217ece8410099f9982ef900c3b3c3David Chisnall llvm::Value *cmd = GetSelector(Builder, Sel); 1005db831948f32217ece8410099f9982ef900c3b3c3David Chisnall 1006b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 1007b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CallArgList ActualArgs; 1008b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 100904c9a49ee251424b11d7c4e8b1c23637684cecb6Eli Friedman ActualArgs.add(RValue::get(EnforceType(Builder, Receiver, IdTy)), ASTIdTy); 101004c9a49ee251424b11d7c4e8b1c23637684cecb6Eli Friedman ActualArgs.add(RValue::get(cmd), CGF.getContext().getObjCSelType()); 1011f85e193739c953358c865005855253af4f68a497John McCall ActualArgs.addFrom(CallArgs); 1012b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 1013b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CodeGenTypes &Types = CGM.getTypes(); 101404a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall const CGFunctionInfo &FnInfo = Types.getFunctionInfo(ResultType, ActualArgs, 1015264ba48dc98f3f843935a485d5b086f7e0fdc4f1Rafael Espindola FunctionType::ExtInfo()); 1016b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 10175efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar llvm::Value *ReceiverClass = 0; 101848e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (isCategoryImpl) { 101948e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner llvm::Constant *classLookupFunction = 0; 102048e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (IsClassMessage) { 102196e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson classLookupFunction = CGM.CreateRuntimeFunction(llvm::FunctionType::get( 1022da549e8995c447542d5631b8b67fcc3a9582797aJay Foad IdTy, PtrTy, true), "objc_get_meta_class"); 102348e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner } else { 102496e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson classLookupFunction = CGM.CreateRuntimeFunction(llvm::FunctionType::get( 1025da549e8995c447542d5631b8b67fcc3a9582797aJay Foad IdTy, PtrTy, true), "objc_get_class"); 10265efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } 1027db831948f32217ece8410099f9982ef900c3b3c3David Chisnall ReceiverClass = Builder.CreateCall(classLookupFunction, 102848e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner MakeConstantString(Class->getNameAsString())); 10295efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } else { 103048e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner // Set up global aliases for the metaclass or class pointer if they do not 103148e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner // already exist. These will are forward-references which will be set to 1032bb1c8600218b3244340331165fc7cba7bf227655Mike Stump // pointers to the class and metaclass structure created for the runtime 1033bb1c8600218b3244340331165fc7cba7bf227655Mike Stump // load function. To send a message to super, we look up the value of the 103448e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner // super_class pointer from either the class or metaclass structure. 103548e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (IsClassMessage) { 103648e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (!MetaClassPtrAlias) { 103748e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner MetaClassPtrAlias = new llvm::GlobalAlias(IdTy, 103848e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner llvm::GlobalValue::InternalLinkage, ".objc_metaclass_ref" + 103948e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner Class->getNameAsString(), NULL, &TheModule); 104048e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner } 104148e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner ReceiverClass = MetaClassPtrAlias; 104248e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner } else { 104348e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner if (!ClassPtrAlias) { 104448e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner ClassPtrAlias = new llvm::GlobalAlias(IdTy, 104548e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner llvm::GlobalValue::InternalLinkage, ".objc_class_ref" + 104648e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner Class->getNameAsString(), NULL, &TheModule); 104748e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner } 104848e6e7e8106f2404bfdd2d8abe7a840aeeaf047bChris Lattner ReceiverClass = ClassPtrAlias; 10495efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } 105071238f67c5df13eef19450d66b7a7ab28377192aChris Lattner } 10515efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar // Cast the pointer to a simplified version of the class structure 1052db831948f32217ece8410099f9982ef900c3b3c3David Chisnall ReceiverClass = Builder.CreateBitCast(ReceiverClass, 105396e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual( 10547650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType::get(IdTy, IdTy, NULL))); 10555efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar // Get the superclass pointer 1056db831948f32217ece8410099f9982ef900c3b3c3David Chisnall ReceiverClass = Builder.CreateStructGEP(ReceiverClass, 1); 10575efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar // Load the superclass pointer 1058db831948f32217ece8410099f9982ef900c3b3c3David Chisnall ReceiverClass = Builder.CreateLoad(ReceiverClass); 105920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Construct the structure used to look up the IMP 10607650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *ObjCSuperTy = llvm::StructType::get( 106147a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson Receiver->getType(), IdTy, NULL); 1062db831948f32217ece8410099f9982ef900c3b3c3David Chisnall llvm::Value *ObjCSuper = Builder.CreateAlloca(ObjCSuperTy); 1063b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 1064db831948f32217ece8410099f9982ef900c3b3c3David Chisnall Builder.CreateStore(Receiver, Builder.CreateStructGEP(ObjCSuper, 0)); 1065db831948f32217ece8410099f9982ef900c3b3c3David Chisnall Builder.CreateStore(ReceiverClass, Builder.CreateStructGEP(ObjCSuper, 1)); 106620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 1067c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall ObjCSuper = EnforceType(Builder, ObjCSuper, PtrToObjCSuperTy); 10682acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::FunctionType *impType = 1069c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall Types.GetFunctionType(FnInfo, Method ? Method->isVariadic() : false); 1070db831948f32217ece8410099f9982ef900c3b3c3David Chisnall 1071c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // Get the IMP 1072c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *imp = LookupIMPSuper(CGF, ObjCSuper, cmd); 1073c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall imp = EnforceType(Builder, imp, llvm::PointerType::getUnqual(impType)); 107420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 1075dd5c98f709837e5dd3da08d44d1ce407975df2cfDavid Chisnall llvm::Value *impMD[] = { 1076dd5c98f709837e5dd3da08d44d1ce407975df2cfDavid Chisnall llvm::MDString::get(VMContext, Sel.getAsString()), 1077dd5c98f709837e5dd3da08d44d1ce407975df2cfDavid Chisnall llvm::MDString::get(VMContext, Class->getSuperClass()->getNameAsString()), 1078dd5c98f709837e5dd3da08d44d1ce407975df2cfDavid Chisnall llvm::ConstantInt::get(llvm::Type::getInt1Ty(VMContext), IsClassMessage) 1079dd5c98f709837e5dd3da08d44d1ce407975df2cfDavid Chisnall }; 10806f141659cab11109d9931d92d0988f8850778de3Jay Foad llvm::MDNode *node = llvm::MDNode::get(VMContext, impMD); 1081dd5c98f709837e5dd3da08d44d1ce407975df2cfDavid Chisnall 10824b02afcb45cd1a384de7d45f440a8be091dd500bDavid Chisnall llvm::Instruction *call; 1083ef072fd2f3347cfd857d6eb787b245b950771430John McCall RValue msgRet = CGF.EmitCall(FnInfo, imp, Return, ActualArgs, 10844b02afcb45cd1a384de7d45f440a8be091dd500bDavid Chisnall 0, &call); 10854b02afcb45cd1a384de7d45f440a8be091dd500bDavid Chisnall call->setMetadata(msgSendMDKind, node); 10864b02afcb45cd1a384de7d45f440a8be091dd500bDavid Chisnall return msgRet; 108720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 108820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 10891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// Generate code for a message send expression. 10909f6614e3c5d34998dd5a5cc6faf0746dcd611d49David ChisnallRValue 10919f6614e3c5d34998dd5a5cc6faf0746dcd611d49David ChisnallCGObjCGNU::GenerateMessageSend(CodeGenFunction &CGF, 1092ef072fd2f3347cfd857d6eb787b245b950771430John McCall ReturnValueSlot Return, 10937f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar QualType ResultType, 10947f8ea5c5b3a6a4332a841eefdd86b0726722ea7bDaniel Dunbar Selector Sel, 1095f56f1913e91ad32bed52dd3f6afc26735d336584Daniel Dunbar llvm::Value *Receiver, 1096df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian const CallArgList &CallArgs, 1097c6cd5fd3eae71f8841504a396563343cfaaf503eDavid Chisnall const ObjCInterfaceDecl *Class, 1098df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian const ObjCMethodDecl *Method) { 10990bbe0cfd374d0e564c4570b5e84a77f886c32d52David Chisnall CGBuilderTy &Builder = CGF.Builder; 11000bbe0cfd374d0e564c4570b5e84a77f886c32d52David Chisnall 1101664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // Strip out message sends to retain / release in GC mode 1102e289d81369914678db386f6aa86faf8f178e245dDouglas Gregor if (CGM.getLangOptions().getGC() == LangOptions::GCOnly) { 1103ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall if (Sel == RetainSel || Sel == AutoreleaseSel) { 11040bbe0cfd374d0e564c4570b5e84a77f886c32d52David Chisnall return RValue::get(EnforceType(Builder, Receiver, 11050bbe0cfd374d0e564c4570b5e84a77f886c32d52David Chisnall CGM.getTypes().ConvertType(ResultType))); 1106ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 1107ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall if (Sel == ReleaseSel) { 1108ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall return RValue::get(0); 1109ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 1110ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall } 1111664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall 1112664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // If the return type is something that goes in an integer register, the 1113664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // runtime will handle 0 returns. For other cases, we fill in the 0 value 1114664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // ourselves. 1115664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // 1116664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // The language spec says the result of this kind of message send is 1117664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // undefined, but lots of people seem to have forgotten to read that 1118664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // paragraph and insist on sending messages to nil that have structure 1119664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // returns. With GCC, this generates a random return value (whatever happens 1120664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall // to be on the stack / in those registers at the time) on most platforms, 1121c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // and generates an illegal instruction trap on SPARC. With LLVM it corrupts 1122c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // the stack. 1123c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall bool isPointerSizedReturn = (ResultType->isAnyPointerType() || 1124c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall ResultType->isIntegralOrEnumerationType() || ResultType->isVoidType()); 1125664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall 1126664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::BasicBlock *startBB = 0; 1127664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::BasicBlock *messageBB = 0; 1128a54da05098aff1ca992f5292f3f6a39ec3cef31eDavid Chisnall llvm::BasicBlock *continueBB = 0; 1129664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall 1130664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall if (!isPointerSizedReturn) { 1131664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall startBB = Builder.GetInsertBlock(); 1132664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall messageBB = CGF.createBasicBlock("msgSend"); 1133a54da05098aff1ca992f5292f3f6a39ec3cef31eDavid Chisnall continueBB = CGF.createBasicBlock("continue"); 1134664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall 1135664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::Value *isNil = Builder.CreateICmpEQ(Receiver, 1136664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::Constant::getNullValue(Receiver->getType())); 1137a54da05098aff1ca992f5292f3f6a39ec3cef31eDavid Chisnall Builder.CreateCondBr(isNil, continueBB, messageBB); 1138664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall CGF.EmitBlock(messageBB); 1139664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall } 1140664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall 11410f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall IdTy = cast<llvm::PointerType>(CGM.getTypes().ConvertType(ASTIdTy)); 1142df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian llvm::Value *cmd; 1143df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian if (Method) 1144d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian cmd = GetSelector(Builder, Method); 1145df9ccc6381314ccca6407abb209155e9273a631dFariborz Jahanian else 1146d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian cmd = GetSelector(Builder, Sel); 1147c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall cmd = EnforceType(Builder, cmd, SelectorTy); 1148c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall Receiver = EnforceType(Builder, Receiver, IdTy); 1149c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 1150c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *impMD[] = { 1151c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::MDString::get(VMContext, Sel.getAsString()), 1152c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::MDString::get(VMContext, Class ? Class->getNameAsString() :""), 1153c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::ConstantInt::get(llvm::Type::getInt1Ty(VMContext), Class!=0) 1154c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall }; 11556f141659cab11109d9931d92d0988f8850778de3Jay Foad llvm::MDNode *node = llvm::MDNode::get(VMContext, impMD); 1156b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 1157c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall // Get the IMP to call 1158c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Value *imp = LookupIMP(CGF, Receiver, cmd, node); 1159c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall 1160c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall CallArgList ActualArgs; 116104c9a49ee251424b11d7c4e8b1c23637684cecb6Eli Friedman ActualArgs.add(RValue::get(Receiver), ASTIdTy); 116204c9a49ee251424b11d7c4e8b1c23637684cecb6Eli Friedman ActualArgs.add(RValue::get(cmd), CGF.getContext().getObjCSelType()); 1163f85e193739c953358c865005855253af4f68a497John McCall ActualArgs.addFrom(CallArgs); 1164b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian 1165b3716efb0966620f205c939b671b579ad331ca0dFariborz Jahanian CodeGenTypes &Types = CGM.getTypes(); 116604a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall const CGFunctionInfo &FnInfo = Types.getFunctionInfo(ResultType, ActualArgs, 1167264ba48dc98f3f843935a485d5b086f7e0fdc4f1Rafael Espindola FunctionType::ExtInfo()); 11682acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::FunctionType *impType = 11696793966aa221764f579cc8436bd641e1ec339c6dDaniel Dunbar Types.GetFunctionType(FnInfo, Method ? Method->isVariadic() : false); 1170c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall imp = EnforceType(Builder, imp, llvm::PointerType::getUnqual(impType)); 117163e742bed90aab2e8e778e48fbbd4bce766b4373David Chisnall 117263e742bed90aab2e8e778e48fbbd4bce766b4373David Chisnall 117334e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian // For sender-aware dispatch, we pass the sender as the third argument to a 117434e65770ad6142b033d6cec4f476ed20fb248bf3Fariborz Jahanian // lookup function. When sending messages from C code, the sender is nil. 1175d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // objc_msg_lookup_sender(id *receiver, SEL selector, id sender); 11764b02afcb45cd1a384de7d45f440a8be091dd500bDavid Chisnall llvm::Instruction *call; 1177ef072fd2f3347cfd857d6eb787b245b950771430John McCall RValue msgRet = CGF.EmitCall(FnInfo, imp, Return, ActualArgs, 11784b02afcb45cd1a384de7d45f440a8be091dd500bDavid Chisnall 0, &call); 11794b02afcb45cd1a384de7d45f440a8be091dd500bDavid Chisnall call->setMetadata(msgSendMDKind, node); 1180664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall 1181a54da05098aff1ca992f5292f3f6a39ec3cef31eDavid Chisnall 1182664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall if (!isPointerSizedReturn) { 1183a54da05098aff1ca992f5292f3f6a39ec3cef31eDavid Chisnall messageBB = CGF.Builder.GetInsertBlock(); 1184a54da05098aff1ca992f5292f3f6a39ec3cef31eDavid Chisnall CGF.Builder.CreateBr(continueBB); 1185a54da05098aff1ca992f5292f3f6a39ec3cef31eDavid Chisnall CGF.EmitBlock(continueBB); 1186664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall if (msgRet.isScalar()) { 1187664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::Value *v = msgRet.getScalarVal(); 1188bbf3bacb3e0c1ebb3e8a4a8b1330404a7e379315Jay Foad llvm::PHINode *phi = Builder.CreatePHI(v->getType(), 2); 1189664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi->addIncoming(v, messageBB); 1190664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi->addIncoming(llvm::Constant::getNullValue(v->getType()), startBB); 1191664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall msgRet = RValue::get(phi); 1192664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall } else if (msgRet.isAggregate()) { 1193664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::Value *v = msgRet.getAggregateAddr(); 1194bbf3bacb3e0c1ebb3e8a4a8b1330404a7e379315Jay Foad llvm::PHINode *phi = Builder.CreatePHI(v->getType(), 2); 11952acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::PointerType *RetTy = cast<llvm::PointerType>(v->getType()); 1196866163bf6c66211a9b4d5ba160ac02de04ce4be6David Chisnall llvm::AllocaInst *NullVal = 1197866163bf6c66211a9b4d5ba160ac02de04ce4be6David Chisnall CGF.CreateTempAlloca(RetTy->getElementType(), "null"); 1198664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall CGF.InitTempAlloca(NullVal, 1199664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall llvm::Constant::getNullValue(RetTy->getElementType())); 1200664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi->addIncoming(v, messageBB); 1201664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi->addIncoming(NullVal, startBB); 1202664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall msgRet = RValue::getAggregate(phi); 1203664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall } else /* isComplex() */ { 1204664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall std::pair<llvm::Value*,llvm::Value*> v = msgRet.getComplexVal(); 1205bbf3bacb3e0c1ebb3e8a4a8b1330404a7e379315Jay Foad llvm::PHINode *phi = Builder.CreatePHI(v.first->getType(), 2); 1206664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi->addIncoming(v.first, messageBB); 1207664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi->addIncoming(llvm::Constant::getNullValue(v.first->getType()), 1208664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall startBB); 1209bbf3bacb3e0c1ebb3e8a4a8b1330404a7e379315Jay Foad llvm::PHINode *phi2 = Builder.CreatePHI(v.second->getType(), 2); 1210664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi2->addIncoming(v.second, messageBB); 1211664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall phi2->addIncoming(llvm::Constant::getNullValue(v.second->getType()), 1212664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall startBB); 1213664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall msgRet = RValue::getComplex(phi, phi2); 1214664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall } 1215664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall } 1216664b7c74aff2ccdf9d13eae08b3466326fc6cc1fDavid Chisnall return msgRet; 121720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 121820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 12191eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// Generates a MethodList. Used in construction of a objc_class and 122020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// objc_category structures. 12215f9e272e632e951b1efe824cd16acb4d96077930Chris Lattnerllvm::Constant *CGObjCGNU::GenerateMethodList(const StringRef &ClassName, 12225f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner const StringRef &CategoryName, 12235f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner const SmallVectorImpl<Selector> &MethodSels, 12245f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner const SmallVectorImpl<llvm::Constant *> &MethodTypes, 122520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov bool isClassMethodList) { 12260f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall if (MethodSels.empty()) 12270f436560640a1cff5b6d96f80f540770f139453fDavid Chisnall return NULLPtr; 12281eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Get the method structure type. 12297650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *ObjCMethodTy = llvm::StructType::get( 123020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // Really a selector, but the runtime creates it us. 123120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // Method types 1232c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall IMPTy, //Method pointer 123320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 123420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Methods; 123520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 123620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (unsigned int i = 0, e = MethodTypes.size(); i < e; ++i) { 123720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 12389f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::Constant *Method = 123920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov TheModule.getFunction(SymbolNameForMethod(ClassName, CategoryName, 12409f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall MethodSels[i], 12419f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall isClassMethodList)); 12429f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall assert(Method && "Can't generate metadata for method that doesn't exist"); 12439f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::Constant *C = MakeConstantString(MethodSels[i].getAsString()); 12449f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Elements.push_back(C); 12459f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Elements.push_back(MethodTypes[i]); 12469f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Method = llvm::ConstantExpr::getBitCast(Method, 1247c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall IMPTy); 12489f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Elements.push_back(Method); 12499f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Methods.push_back(llvm::ConstantStruct::get(ObjCMethodTy, Elements)); 125020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 125120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 125220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Array of method structures 125396e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *ObjCMethodArrayTy = llvm::ArrayType::get(ObjCMethodTy, 12541e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian Methods.size()); 12557db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson llvm::Constant *MethodArray = llvm::ConstantArray::get(ObjCMethodArrayTy, 1256fba676396703e87a5034e5f308aa30a633468f66Chris Lattner Methods); 125720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 125820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Structure containing list pointer, array and array count 1259c1c20114a401e503c07d68c47e0728bb063f35c8Chris Lattner llvm::StructType *ObjCMethodListTy = llvm::StructType::create(VMContext); 12609cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner llvm::Type *NextPtrTy = llvm::PointerType::getUnqual(ObjCMethodListTy); 12619cbe4f0ba01ec304e1e3d071c071f7bca33631c0Chris Lattner ObjCMethodListTy->setBody( 12621eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump NextPtrTy, 12631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump IntTy, 126420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ObjCMethodArrayTy, 126520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 126620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 126720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.clear(); 126803e205031b08669f05c41eed5b896fc94c4a12bbOwen Anderson Methods.push_back(llvm::ConstantPointerNull::get( 126996e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(ObjCMethodListTy))); 1270917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall Methods.push_back(llvm::ConstantInt::get(Int32Ty, MethodTypes.size())); 127120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.push_back(MethodArray); 12721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 127320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an instance of the structure 127420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ObjCMethodListTy, Methods, ".objc_method_list"); 127520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 127620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 127720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// Generates an IvarList. Used in construction of a objc_class. 127820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::GenerateIvarList( 12795f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner const SmallVectorImpl<llvm::Constant *> &IvarNames, 12805f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner const SmallVectorImpl<llvm::Constant *> &IvarTypes, 12815f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner const SmallVectorImpl<llvm::Constant *> &IvarOffsets) { 12821804463ee790ac3cc73f72597ccb38b983f7d263David Chisnall if (IvarNames.size() == 0) 12831804463ee790ac3cc73f72597ccb38b983f7d263David Chisnall return NULLPtr; 12841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Get the method structure type. 12857650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *ObjCIvarTy = llvm::StructType::get( 128620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 128720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 128820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IntTy, 128920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 129020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Ivars; 129120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 129220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (unsigned int i = 0, e = IvarNames.size() ; i < e ; i++) { 129320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 12948a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall Elements.push_back(IvarNames[i]); 12958a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall Elements.push_back(IvarTypes[i]); 129620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(IvarOffsets[i]); 129708e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson Ivars.push_back(llvm::ConstantStruct::get(ObjCIvarTy, Elements)); 129820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 129920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 130020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Array of method structures 130196e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *ObjCIvarArrayTy = llvm::ArrayType::get(ObjCIvarTy, 130220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IvarNames.size()); 130320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 13041eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 130520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 13064a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Elements.push_back(llvm::ConstantInt::get(IntTy, (int)IvarNames.size())); 13077db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson Elements.push_back(llvm::ConstantArray::get(ObjCIvarArrayTy, Ivars)); 130820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Structure containing array and array count 13097650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *ObjCIvarListTy = llvm::StructType::get(IntTy, 131020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ObjCIvarArrayTy, 131120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 131220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 131320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an instance of the structure 131420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ObjCIvarListTy, Elements, ".objc_ivar_list"); 13150f984268b05edab2cc555a427c441baa9c252658Chris Lattner} 13160f984268b05edab2cc555a427c441baa9c252658Chris Lattner 131720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov/// Generate a class structure 131820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::GenerateClassStructure( 131920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MetaClass, 132020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SuperClass, 132120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov unsigned info, 1322d002cc6fc5b72bf00e3b7b4571ccf0f23c789b4bChris Lattner const char *Name, 132320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Version, 132420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *InstanceSize, 132520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *IVars, 132620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Methods, 1327d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *Protocols, 1328d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *IvarOffsets, 13298c757f9ea33dccff4da7810e0c1bda59c19ddc9aDavid Chisnall llvm::Constant *Properties, 1330917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::Constant *StrongIvarBitmap, 1331917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::Constant *WeakIvarBitmap, 13328c757f9ea33dccff4da7810e0c1bda59c19ddc9aDavid Chisnall bool isMeta) { 133320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Set up the class structure 133420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Note: Several of these are char*s when they should be ids. This is 133520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // because the runtime performs this translation on load. 1336d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // 1337d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Fields marked New ABI are part of the GNUstep runtime. We emit them 1338d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // anyway; the classes will still work with the GNU runtime, they will just 1339d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // be ignored. 13407650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *ClassTy = llvm::StructType::get( 134120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // class_pointer 134220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // super_class 134320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // name 134420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov LongTy, // version 134520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov LongTy, // info 134620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov LongTy, // instance_size 134720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IVars->getType(), // ivars 134820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods->getType(), // methods 13491eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // These are all filled in by the runtime, so we pretend 135020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // dtable 135120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // subclass_list 135220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // sibling_class 135320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // protocols 135420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, // gc_object_type 1355d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // New ABI: 1356d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian LongTy, // abi_version 1357d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian IvarOffsets->getType(), // ivar_offsets 1358d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Properties->getType(), // properties 1359917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall Int64Ty, // strong_pointers 1360917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall Int64Ty, // weak_pointers 136120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 13624a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson llvm::Constant *Zero = llvm::ConstantInt::get(LongTy, 0); 136320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Fill in the structure 136420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 13653c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getBitCast(MetaClass, PtrToInt8Ty)); 136620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(SuperClass); 1367d002cc6fc5b72bf00e3b7b4571ccf0f23c789b4bChris Lattner Elements.push_back(MakeConstantString(Name, ".class_name")); 136820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(Zero); 13694a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Elements.push_back(llvm::ConstantInt::get(LongTy, info)); 137005f3a507bb53ed2bd5573d551a26654a604187ebDavid Chisnall if (isMeta) { 137105f3a507bb53ed2bd5573d551a26654a604187ebDavid Chisnall llvm::TargetData td(&TheModule); 1372e0afc892e75f526f7ecce7dd152d946337632efeKen Dyck Elements.push_back( 1373e0afc892e75f526f7ecce7dd152d946337632efeKen Dyck llvm::ConstantInt::get(LongTy, 1374e0afc892e75f526f7ecce7dd152d946337632efeKen Dyck td.getTypeSizeInBits(ClassTy) / 1375e0afc892e75f526f7ecce7dd152d946337632efeKen Dyck CGM.getContext().getCharWidth())); 137605f3a507bb53ed2bd5573d551a26654a604187ebDavid Chisnall } else 137705f3a507bb53ed2bd5573d551a26654a604187ebDavid Chisnall Elements.push_back(InstanceSize); 137820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(IVars); 137920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(Methods); 1380d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(NULLPtr); 1381d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(NULLPtr); 1382d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(NULLPtr); 13833c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getBitCast(Protocols, PtrTy)); 1384d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(NULLPtr); 1385917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall Elements.push_back(llvm::ConstantInt::get(LongTy, 1)); 1386d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(IvarOffsets); 1387d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(Properties); 1388917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall Elements.push_back(StrongIvarBitmap); 1389917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall Elements.push_back(WeakIvarBitmap); 139020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an instance of the structure 139141d63ed274d1bf7ba7459f218c8f6a385fc5c6d6David Chisnall // This is now an externally visible symbol, so that we can speed up class 139241d63ed274d1bf7ba7459f218c8f6a385fc5c6d6David Chisnall // messages in the next ABI. 13938c757f9ea33dccff4da7810e0c1bda59c19ddc9aDavid Chisnall return MakeGlobal(ClassTy, Elements, (isMeta ? "_OBJC_METACLASS_": 13948c757f9ea33dccff4da7810e0c1bda59c19ddc9aDavid Chisnall "_OBJC_CLASS_") + std::string(Name), llvm::GlobalValue::ExternalLinkage); 139520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 139620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 139720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::GenerateProtocolMethodList( 13985f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner const SmallVectorImpl<llvm::Constant *> &MethodNames, 13995f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner const SmallVectorImpl<llvm::Constant *> &MethodTypes) { 14001eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Get the method structure type. 14017650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *ObjCMethodDescTy = llvm::StructType::get( 140220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, // Really a selector, but the runtime does the casting for us. 140320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 140420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 140520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Methods; 140620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 140720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (unsigned int i = 0, e = MethodTypes.size() ; i < e ; i++) { 140820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 14091eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Elements.push_back(MethodNames[i]); 14108a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall Elements.push_back(MethodTypes[i]); 141108e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson Methods.push_back(llvm::ConstantStruct::get(ObjCMethodDescTy, Elements)); 141220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 141396e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *ObjCMethodArrayTy = llvm::ArrayType::get(ObjCMethodDescTy, 141420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov MethodNames.size()); 14157db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson llvm::Constant *Array = llvm::ConstantArray::get(ObjCMethodArrayTy, 1416bb1c8600218b3244340331165fc7cba7bf227655Mike Stump Methods); 14177650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *ObjCMethodDescListTy = llvm::StructType::get( 141820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IntTy, ObjCMethodArrayTy, NULL); 141920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.clear(); 14204a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Methods.push_back(llvm::ConstantInt::get(IntTy, MethodNames.size())); 142120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Methods.push_back(Array); 142220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ObjCMethodDescListTy, Methods, ".objc_method_list"); 142320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 1424bb1c8600218b3244340331165fc7cba7bf227655Mike Stump 142520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov// Create the protocol list structure used in classes, categories and so on 142620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikovllvm::Constant *CGObjCGNU::GenerateProtocolList( 14275f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner const SmallVectorImpl<std::string> &Protocols) { 142896e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *ProtocolArrayTy = llvm::ArrayType::get(PtrToInt8Ty, 142920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Protocols.size()); 14307650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *ProtocolListTy = llvm::StructType::get( 143120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy, //Should be a recurisve pointer, but it's always NULL here. 14328fac25d33b13e25f512dd921d4d5a4b565f5d175David Chisnall SizeTy, 143320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ProtocolArrayTy, 143420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 14351eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump std::vector<llvm::Constant*> Elements; 143620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov for (const std::string *iter = Protocols.begin(), *endIter = Protocols.end(); 143720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov iter != endIter ; iter++) { 1438ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall llvm::Constant *protocol = 0; 1439ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall llvm::StringMap<llvm::Constant*>::iterator value = 1440ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall ExistingProtocols.find(*iter); 1441ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall if (value == ExistingProtocols.end()) { 1442f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian protocol = GenerateEmptyProtocol(*iter); 1443ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall } else { 1444ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall protocol = value->getValue(); 1445ff80fabfa42d4aadbbaab4d61fa518d80b5a981aDavid Chisnall } 14463c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::Constant *Ptr = llvm::ConstantExpr::getBitCast(protocol, 1447a1cf15f4680e5cf39e72e28c5ea854fcba792e84Owen Anderson PtrToInt8Ty); 144820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(Ptr); 144920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 14507db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson llvm::Constant * ProtocolArray = llvm::ConstantArray::get(ProtocolArrayTy, 145120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements); 145220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 145320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 14544a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson Elements.push_back(llvm::ConstantInt::get(LongTy, Protocols.size())); 145520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ProtocolArray); 145620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return MakeGlobal(ProtocolListTy, Elements, ".objc_protocol_list"); 145720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 145820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 14591eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumpllvm::Value *CGObjCGNU::GenerateProtocolRef(CGBuilderTy &Builder, 1460af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar const ObjCProtocolDecl *PD) { 1461f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::Value *protocol = ExistingProtocols[PD->getNameAsString()]; 14622acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::Type *T = 1463f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian CGM.getTypes().ConvertType(CGM.getContext().getObjCProtoType()); 146496e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson return Builder.CreateBitCast(protocol, llvm::PointerType::getUnqual(T)); 1465f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian} 1466f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian 1467f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanianllvm::Constant *CGObjCGNU::GenerateEmptyProtocol( 1468f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian const std::string &ProtocolName) { 14695f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<std::string, 0> EmptyStringVector; 14705f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 0> EmptyConstantVector; 1471f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian 1472f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian llvm::Constant *ProtocolList = GenerateProtocolList(EmptyStringVector); 1473d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *MethodList = 1474f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian GenerateProtocolMethodList(EmptyConstantVector, EmptyConstantVector); 1475f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian // Protocols are objects containing lists of the methods implemented and 1476f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian // protocols adopted. 14777650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *ProtocolTy = llvm::StructType::get(IdTy, 1478f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian PtrToInt8Ty, 1479f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian ProtocolList->getType(), 1480d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MethodList->getType(), 1481d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MethodList->getType(), 1482d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MethodList->getType(), 1483d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MethodList->getType(), 1484f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian NULL); 14851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump std::vector<llvm::Constant*> Elements; 1486f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian // The isa pointer must be set to a magic number so the runtime knows it's 1487f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian // the correct layout. 14883c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getIntToPtr( 1489917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::ConstantInt::get(Int32Ty, ProtocolVersion), IdTy)); 1490f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian Elements.push_back(MakeConstantString(ProtocolName, ".objc_protocol_name")); 1491f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian Elements.push_back(ProtocolList); 1492d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(MethodList); 1493d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(MethodList); 1494d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(MethodList); 1495d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(MethodList); 1496f8c4f5469d7db591eeacfc3381d91f773fb7af43Fariborz Jahanian return MakeGlobal(ProtocolTy, Elements, ".objc_protocol"); 149720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 149820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 1499af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbarvoid CGObjCGNU::GenerateProtocol(const ObjCProtocolDecl *PD) { 1500af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar ASTContext &Context = CGM.getContext(); 15018ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string ProtocolName = PD->getNameAsString(); 15025f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<std::string, 16> Protocols; 1503af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar for (ObjCProtocolDecl::protocol_iterator PI = PD->protocol_begin(), 1504af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar E = PD->protocol_end(); PI != E; ++PI) 1505d9d22dd9c94618490dbffb0e2caf222530ca39d3Chris Lattner Protocols.push_back((*PI)->getNameAsString()); 15065f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> InstanceMethodNames; 15075f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> InstanceMethodTypes; 15085f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> OptionalInstanceMethodNames; 15095f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> OptionalInstanceMethodTypes; 151017945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis for (ObjCProtocolDecl::instmeth_iterator iter = PD->instmeth_begin(), 151117945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis E = PD->instmeth_end(); iter != E; iter++) { 1512af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar std::string TypeStr; 1513af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar Context.getObjCEncodingForMethodDecl(*iter, TypeStr); 1514d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if ((*iter)->getImplementationControl() == ObjCMethodDecl::Optional) { 1515d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian InstanceMethodNames.push_back( 1516d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MakeConstantString((*iter)->getSelector().getAsString())); 1517d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian InstanceMethodTypes.push_back(MakeConstantString(TypeStr)); 1518d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 1519d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalInstanceMethodNames.push_back( 1520d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MakeConstantString((*iter)->getSelector().getAsString())); 1521d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalInstanceMethodTypes.push_back(MakeConstantString(TypeStr)); 1522d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1523af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar } 1524af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar // Collect information about class methods: 15255f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> ClassMethodNames; 15265f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> ClassMethodTypes; 15275f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> OptionalClassMethodNames; 15285f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> OptionalClassMethodTypes; 15291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump for (ObjCProtocolDecl::classmeth_iterator 153017945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = PD->classmeth_begin(), endIter = PD->classmeth_end(); 153117945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter != endIter ; iter++) { 1532af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar std::string TypeStr; 1533af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar Context.getObjCEncodingForMethodDecl((*iter),TypeStr); 1534d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if ((*iter)->getImplementationControl() == ObjCMethodDecl::Optional) { 1535d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ClassMethodNames.push_back( 1536d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MakeConstantString((*iter)->getSelector().getAsString())); 1537d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ClassMethodTypes.push_back(MakeConstantString(TypeStr)); 1538d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 1539d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalClassMethodNames.push_back( 1540d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MakeConstantString((*iter)->getSelector().getAsString())); 1541d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalClassMethodTypes.push_back(MakeConstantString(TypeStr)); 1542d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1543af2f62ce32e462f256855cd24b06dec4755d2827Daniel Dunbar } 154420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 154520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ProtocolList = GenerateProtocolList(Protocols); 154620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *InstanceMethodList = 154720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov GenerateProtocolMethodList(InstanceMethodNames, InstanceMethodTypes); 154820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ClassMethodList = 154920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov GenerateProtocolMethodList(ClassMethodNames, ClassMethodTypes); 1550d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *OptionalInstanceMethodList = 1551d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian GenerateProtocolMethodList(OptionalInstanceMethodNames, 1552d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalInstanceMethodTypes); 1553d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *OptionalClassMethodList = 1554d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian GenerateProtocolMethodList(OptionalClassMethodNames, 1555d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalClassMethodTypes); 1556d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1557d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Property metadata: name, attributes, isSynthesized, setter name, setter 1558d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // types, getter name, getter types. 1559d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // The isSynthesized value is always set to 0 in a protocol. It exists to 1560d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // simplify the runtime library by allowing it to use the same data 1561d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // structures for protocol metadata everywhere. 15627650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *PropertyMetadataTy = llvm::StructType::get( 1563d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrToInt8Ty, Int8Ty, Int8Ty, PtrToInt8Ty, PtrToInt8Ty, PtrToInt8Ty, 1564d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrToInt8Ty, NULL); 1565d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> Properties; 1566d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> OptionalProperties; 1567d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1568d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Add all of the property methods need adding to the method list and to the 1569d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // property metadata list. 1570d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian for (ObjCContainerDecl::prop_iterator 1571d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian iter = PD->prop_begin(), endIter = PD->prop_end(); 1572d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian iter != endIter ; iter++) { 1573d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> Fields; 1574d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ObjCPropertyDecl *property = (*iter); 1575d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1576d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(MakeConstantString(property->getNameAsString())); 1577d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(llvm::ConstantInt::get(Int8Ty, 1578d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian property->getPropertyAttributes())); 1579d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(llvm::ConstantInt::get(Int8Ty, 0)); 1580d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if (ObjCMethodDecl *getter = property->getGetterMethodDecl()) { 1581d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::string TypeStr; 1582d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Context.getObjCEncodingForMethodDecl(getter,TypeStr); 1583d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *TypeEncoding = MakeConstantString(TypeStr); 1584d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian InstanceMethodTypes.push_back(TypeEncoding); 1585d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(MakeConstantString(getter->getSelector().getAsString())); 1586d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(TypeEncoding); 1587d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 1588d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1589d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1590d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1591d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if (ObjCMethodDecl *setter = property->getSetterMethodDecl()) { 1592d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::string TypeStr; 1593d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Context.getObjCEncodingForMethodDecl(setter,TypeStr); 1594d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *TypeEncoding = MakeConstantString(TypeStr); 1595d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian InstanceMethodTypes.push_back(TypeEncoding); 1596d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(MakeConstantString(setter->getSelector().getAsString())); 1597d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(TypeEncoding); 1598d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 1599d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1600d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1601d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1602d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if (property->getPropertyImplementation() == ObjCPropertyDecl::Optional) { 1603d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalProperties.push_back(llvm::ConstantStruct::get(PropertyMetadataTy, Fields)); 1604d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 1605d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Properties.push_back(llvm::ConstantStruct::get(PropertyMetadataTy, Fields)); 1606d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1607d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1608d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *PropertyArray = llvm::ConstantArray::get( 1609d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ArrayType::get(PropertyMetadataTy, Properties.size()), Properties); 1610d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant* PropertyListInitFields[] = 1611d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian {llvm::ConstantInt::get(IntTy, Properties.size()), NULLPtr, PropertyArray}; 1612d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1613d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *PropertyListInit = 1614c5cbb909e8a27deb8f1a2b6b7bf56a96051af81aChris Lattner llvm::ConstantStruct::getAnon(PropertyListInitFields); 1615d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *PropertyList = new llvm::GlobalVariable(TheModule, 1616d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PropertyListInit->getType(), false, llvm::GlobalValue::InternalLinkage, 1617d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PropertyListInit, ".objc_property_list"); 1618d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1619d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *OptionalPropertyArray = 1620d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ConstantArray::get(llvm::ArrayType::get(PropertyMetadataTy, 1621d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalProperties.size()) , OptionalProperties); 1622d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant* OptionalPropertyListInitFields[] = { 1623d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ConstantInt::get(IntTy, OptionalProperties.size()), NULLPtr, 1624d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalPropertyArray }; 1625d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1626d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *OptionalPropertyListInit = 1627c5cbb909e8a27deb8f1a2b6b7bf56a96051af81aChris Lattner llvm::ConstantStruct::getAnon(OptionalPropertyListInitFields); 1628d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *OptionalPropertyList = new llvm::GlobalVariable(TheModule, 1629d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalPropertyListInit->getType(), false, 1630d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::GlobalValue::InternalLinkage, OptionalPropertyListInit, 1631d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ".objc_property_list"); 1632d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 163320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Protocols are objects containing lists of the methods implemented and 163420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // protocols adopted. 16357650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *ProtocolTy = llvm::StructType::get(IdTy, 163620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrToInt8Ty, 163720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ProtocolList->getType(), 163820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov InstanceMethodList->getType(), 163920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ClassMethodList->getType(), 1640d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalInstanceMethodList->getType(), 1641d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalClassMethodList->getType(), 1642d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PropertyList->getType(), 1643d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian OptionalPropertyList->getType(), 164420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov NULL); 16451eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump std::vector<llvm::Constant*> Elements; 164620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // The isa pointer must be set to a magic number so the runtime knows it's 164720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // the correct layout. 16483c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getIntToPtr( 1649917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::ConstantInt::get(Int32Ty, ProtocolVersion), IdTy)); 165020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(MakeConstantString(ProtocolName, ".objc_protocol_name")); 165120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ProtocolList); 165220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(InstanceMethodList); 165320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ClassMethodList); 1654d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(OptionalInstanceMethodList); 1655d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(OptionalClassMethodList); 1656d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(PropertyList); 1657d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(OptionalPropertyList); 16581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump ExistingProtocols[ProtocolName] = 16593c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::ConstantExpr::getBitCast(MakeGlobal(ProtocolTy, Elements, 166020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ".objc_protocol"), IdTy); 166120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 1662d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanianvoid CGObjCGNU::GenerateProtocolHolderCategory(void) { 1663d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Collect information about instance methods 16645f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<Selector, 1> MethodSels; 16655f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 1> MethodTypes; 1666d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1667d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> Elements; 1668d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian const std::string ClassName = "__ObjC_Protocol_Holder_Ugly_Hack"; 1669d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian const std::string CategoryName = "AnotherHack"; 1670d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(MakeConstantString(CategoryName)); 1671d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(MakeConstantString(ClassName)); 1672d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Instance method list 1673d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(llvm::ConstantExpr::getBitCast(GenerateMethodList( 1674d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ClassName, CategoryName, MethodSels, MethodTypes, false), PtrTy)); 1675d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Class method list 1676d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(llvm::ConstantExpr::getBitCast(GenerateMethodList( 1677d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ClassName, CategoryName, MethodSels, MethodTypes, true), PtrTy)); 1678d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Protocol list 1679d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ArrayType *ProtocolArrayTy = llvm::ArrayType::get(PtrTy, 1680d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ExistingProtocols.size()); 16817650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *ProtocolListTy = llvm::StructType::get( 1682d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrTy, //Should be a recurisve pointer, but it's always NULL here. 16838fac25d33b13e25f512dd921d4d5a4b565f5d175David Chisnall SizeTy, 1684d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolArrayTy, 1685d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian NULL); 1686d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> ProtocolElements; 1687d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian for (llvm::StringMapIterator<llvm::Constant*> iter = 1688d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ExistingProtocols.begin(), endIter = ExistingProtocols.end(); 1689d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian iter != endIter ; iter++) { 1690d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *Ptr = llvm::ConstantExpr::getBitCast(iter->getValue(), 1691d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrTy); 1692d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements.push_back(Ptr); 1693d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1694d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant * ProtocolArray = llvm::ConstantArray::get(ProtocolArrayTy, 1695d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements); 1696d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements.clear(); 1697d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements.push_back(NULLPtr); 1698d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements.push_back(llvm::ConstantInt::get(LongTy, 1699d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ExistingProtocols.size())); 1700d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements.push_back(ProtocolArray); 1701d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Elements.push_back(llvm::ConstantExpr::getBitCast(MakeGlobal(ProtocolListTy, 1702d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ProtocolElements, ".objc_protocol_list"), PtrTy)); 1703d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Categories.push_back(llvm::ConstantExpr::getBitCast( 17047650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner MakeGlobal(llvm::StructType::get(PtrToInt8Ty, PtrToInt8Ty, 1705d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrTy, PtrTy, PtrTy, NULL), Elements), PtrTy)); 1706d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian} 170720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 1708917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall/// Libobjc2 uses a bitfield representation where small(ish) bitfields are 1709917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall/// stored in a 64-bit value with the low bit set to 1 and the remaining 63 1710917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall/// bits set to their values, LSB first, while larger ones are stored in a 1711917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall/// structure of this / form: 1712917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall/// 1713917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall/// struct { int32_t length; int32_t values[length]; }; 1714917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall/// 1715917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall/// The values in the array are stored in host-endian format, with the least 1716917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall/// significant bit being assumed to come first in the bitfield. Therefore, a 1717917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall/// bitfield with the 64th bit set will be (int64_t)&{ 2, [0, 1<<31] }, while a 1718917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall/// bitfield / with the 63rd bit set will be 1<<64. 1719917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnallllvm::Constant *CGObjCGNU::MakeBitField(llvm::SmallVectorImpl<bool> &bits) { 1720917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall int bitCount = bits.size(); 1721917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall if (bitCount < 64) { 1722917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall uint64_t val = 1; 1723917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall for (int i=0 ; i<bitCount ; ++i) { 1724e3c944a9f620dacb0c29d16e7d61c8e7fca10963Eli Friedman if (bits[i]) val |= 1ULL<<(i+1); 1725917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall } 1726917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall return llvm::ConstantInt::get(Int64Ty, val); 1727917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall } 1728917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::SmallVector<llvm::Constant*, 8> values; 1729917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall int v=0; 1730917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall while (v < bitCount) { 1731917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall int32_t word = 0; 1732917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall for (int i=0 ; (i<32) && (v<bitCount) ; ++i) { 1733917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall if (bits[v]) word |= 1<<i; 1734917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall v++; 1735917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall } 1736917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall values.push_back(llvm::ConstantInt::get(Int32Ty, word)); 1737917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall } 1738917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::ArrayType *arrayTy = llvm::ArrayType::get(Int32Ty, values.size()); 1739917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::Constant *array = llvm::ConstantArray::get(arrayTy, values); 1740917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::Constant *fields[2] = { 1741917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::ConstantInt::get(Int32Ty, values.size()), 1742917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall array }; 1743917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::Constant *GS = MakeGlobal(llvm::StructType::get(Int32Ty, arrayTy, 1744917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall NULL), fields); 1745917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall return llvm::ConstantExpr::getPtrToInt(GS, Int64Ty); 1746917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall} 1747917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall 17487ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbarvoid CGObjCGNU::GenerateCategory(const ObjCCategoryImplDecl *OCD) { 17498ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string ClassName = OCD->getClassInterface()->getNameAsString(); 17508ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string CategoryName = OCD->getNameAsString(); 17517ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about instance methods 17525f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<Selector, 16> InstanceMethodSels; 17535f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> InstanceMethodTypes; 1754653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor for (ObjCCategoryImplDecl::instmeth_iterator 175517945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = OCD->instmeth_begin(), endIter = OCD->instmeth_end(); 1756653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter != endIter ; iter++) { 17577ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar InstanceMethodSels.push_back((*iter)->getSelector()); 17587ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 17597ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar CGM.getContext().getObjCEncodingForMethodDecl(*iter,TypeStr); 17608a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall InstanceMethodTypes.push_back(MakeConstantString(TypeStr)); 17617ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 17627ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 17637ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about class methods 17645f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<Selector, 16> ClassMethodSels; 17655f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> ClassMethodTypes; 17661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump for (ObjCCategoryImplDecl::classmeth_iterator 176717945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = OCD->classmeth_begin(), endIter = OCD->classmeth_end(); 1768653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter != endIter ; iter++) { 17697ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar ClassMethodSels.push_back((*iter)->getSelector()); 17707ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 17717ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar CGM.getContext().getObjCEncodingForMethodDecl(*iter,TypeStr); 17728a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall ClassMethodTypes.push_back(MakeConstantString(TypeStr)); 17737ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 17747ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 17757ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect the names of referenced protocols 17765f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<std::string, 16> Protocols; 1777ad9e06d82ae627e858e5bfe4a7f1f9337b5b0a15David Chisnall const ObjCCategoryDecl *CatDecl = OCD->getCategoryDecl(); 1778ad9e06d82ae627e858e5bfe4a7f1f9337b5b0a15David Chisnall const ObjCList<ObjCProtocolDecl> &Protos = CatDecl->getReferencedProtocols(); 17797ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar for (ObjCList<ObjCProtocolDecl>::iterator I = Protos.begin(), 17807ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar E = Protos.end(); I != E; ++I) 1781d9d22dd9c94618490dbffb0e2caf222530ca39d3Chris Lattner Protocols.push_back((*I)->getNameAsString()); 17827ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 178320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 178420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(MakeConstantString(CategoryName)); 178520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(MakeConstantString(ClassName)); 17861eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Instance method list 17873c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getBitCast(GenerateMethodList( 1788a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner ClassName, CategoryName, InstanceMethodSels, InstanceMethodTypes, 178920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov false), PtrTy)); 179020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Class method list 17913c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getBitCast(GenerateMethodList( 1792a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner ClassName, CategoryName, ClassMethodSels, ClassMethodTypes, true), 179320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov PtrTy)); 179420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Protocol list 17953c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Elements.push_back(llvm::ConstantExpr::getBitCast( 179620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov GenerateProtocolList(Protocols), PtrTy)); 17973c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Categories.push_back(llvm::ConstantExpr::getBitCast( 17987650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner MakeGlobal(llvm::StructType::get(PtrToInt8Ty, PtrToInt8Ty, 179947a434ff3d49e7906eda88e8e8242e4297725b32Owen Anderson PtrTy, PtrTy, PtrTy, NULL), Elements), PtrTy)); 180020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 18017ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 1802d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanianllvm::Constant *CGObjCGNU::GeneratePropertyList(const ObjCImplementationDecl *OID, 18035f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVectorImpl<Selector> &InstanceMethodSels, 18045f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVectorImpl<llvm::Constant*> &InstanceMethodTypes) { 1805d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ASTContext &Context = CGM.getContext(); 1806d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // 1807d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Property metadata: name, attributes, isSynthesized, setter name, setter 1808d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // types, getter name, getter types. 18097650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *PropertyMetadataTy = llvm::StructType::get( 1810d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrToInt8Ty, Int8Ty, Int8Ty, PtrToInt8Ty, PtrToInt8Ty, PtrToInt8Ty, 1811d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian PtrToInt8Ty, NULL); 1812d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> Properties; 1813d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1814d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1815d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Add all of the property methods need adding to the method list and to the 1816d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // property metadata list. 1817d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian for (ObjCImplDecl::propimpl_iterator 1818d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian iter = OID->propimpl_begin(), endIter = OID->propimpl_end(); 1819d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian iter != endIter ; iter++) { 1820d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> Fields; 1821d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ObjCPropertyDecl *property = (*iter)->getPropertyDecl(); 182242ba04a072c69d84a6660e4498215086662910acDavid Chisnall ObjCPropertyImplDecl *propertyImpl = *iter; 182342ba04a072c69d84a6660e4498215086662910acDavid Chisnall bool isSynthesized = (propertyImpl->getPropertyImplementation() == 182442ba04a072c69d84a6660e4498215086662910acDavid Chisnall ObjCPropertyImplDecl::Synthesize); 1825d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1826d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(MakeConstantString(property->getNameAsString())); 1827d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(llvm::ConstantInt::get(Int8Ty, 1828d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian property->getPropertyAttributes())); 182942ba04a072c69d84a6660e4498215086662910acDavid Chisnall Fields.push_back(llvm::ConstantInt::get(Int8Ty, isSynthesized)); 1830d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if (ObjCMethodDecl *getter = property->getGetterMethodDecl()) { 1831d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::string TypeStr; 1832d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Context.getObjCEncodingForMethodDecl(getter,TypeStr); 1833d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *TypeEncoding = MakeConstantString(TypeStr); 183442ba04a072c69d84a6660e4498215086662910acDavid Chisnall if (isSynthesized) { 183542ba04a072c69d84a6660e4498215086662910acDavid Chisnall InstanceMethodTypes.push_back(TypeEncoding); 183642ba04a072c69d84a6660e4498215086662910acDavid Chisnall InstanceMethodSels.push_back(getter->getSelector()); 183742ba04a072c69d84a6660e4498215086662910acDavid Chisnall } 1838d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(MakeConstantString(getter->getSelector().getAsString())); 1839d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(TypeEncoding); 1840d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 1841d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1842d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1843d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1844d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian if (ObjCMethodDecl *setter = property->getSetterMethodDecl()) { 1845d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::string TypeStr; 1846d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Context.getObjCEncodingForMethodDecl(setter,TypeStr); 1847d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *TypeEncoding = MakeConstantString(TypeStr); 184842ba04a072c69d84a6660e4498215086662910acDavid Chisnall if (isSynthesized) { 184942ba04a072c69d84a6660e4498215086662910acDavid Chisnall InstanceMethodTypes.push_back(TypeEncoding); 185042ba04a072c69d84a6660e4498215086662910acDavid Chisnall InstanceMethodSels.push_back(setter->getSelector()); 185142ba04a072c69d84a6660e4498215086662910acDavid Chisnall } 1852d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(MakeConstantString(setter->getSelector().getAsString())); 1853d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(TypeEncoding); 1854d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } else { 1855d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1856d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Fields.push_back(NULLPtr); 1857d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1858d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Properties.push_back(llvm::ConstantStruct::get(PropertyMetadataTy, Fields)); 1859d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian } 1860d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ArrayType *PropertyArrayTy = 1861d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::ArrayType::get(PropertyMetadataTy, Properties.size()); 1862d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *PropertyArray = llvm::ConstantArray::get(PropertyArrayTy, 1863d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Properties); 1864d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant* PropertyListInitFields[] = 1865d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian {llvm::ConstantInt::get(IntTy, Properties.size()), NULLPtr, PropertyArray}; 1866d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1867d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *PropertyListInit = 1868c5cbb909e8a27deb8f1a2b6b7bf56a96051af81aChris Lattner llvm::ConstantStruct::getAnon(PropertyListInitFields); 1869d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian return new llvm::GlobalVariable(TheModule, PropertyListInit->getType(), false, 1870d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::GlobalValue::InternalLinkage, PropertyListInit, 1871d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian ".objc_property_list"); 1872d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian} 1873d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 18747ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbarvoid CGObjCGNU::GenerateClass(const ObjCImplementationDecl *OID) { 18757ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar ASTContext &Context = CGM.getContext(); 18767ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 18777ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Get the superclass name. 18781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const ObjCInterfaceDecl * SuperClassDecl = 18797ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar OID->getClassInterface()->getSuperClass(); 18808ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string SuperClassName; 18812a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner if (SuperClassDecl) { 18828ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner SuperClassName = SuperClassDecl->getNameAsString(); 18832a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner EmitClassRef(SuperClassName); 18842a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner } 18857ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 18867ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Get the class name 188709dc6660487fc2f4a4bb2032e30123d3e0da7230Chris Lattner ObjCInterfaceDecl *ClassDecl = 188809dc6660487fc2f4a4bb2032e30123d3e0da7230Chris Lattner const_cast<ObjCInterfaceDecl *>(OID->getClassInterface()); 18898ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner std::string ClassName = ClassDecl->getNameAsString(); 18902a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner // Emit the symbol that is used to generate linker errors if this class is 18912a8e4e1d8548dc3e30d7c9ba92127c7884a11448Chris Lattner // referenced in other modules but not declared. 1892c51db23f58bd887b16cf91554aa86c430a2496e7Fariborz Jahanian std::string classSymbolName = "__objc_class_name_" + ClassName; 18931eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (llvm::GlobalVariable *symbol = 1894c51db23f58bd887b16cf91554aa86c430a2496e7Fariborz Jahanian TheModule.getGlobalVariable(classSymbolName)) { 18954a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson symbol->setInitializer(llvm::ConstantInt::get(LongTy, 0)); 1896c51db23f58bd887b16cf91554aa86c430a2496e7Fariborz Jahanian } else { 18971c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson new llvm::GlobalVariable(TheModule, LongTy, false, 18984a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson llvm::GlobalValue::ExternalLinkage, llvm::ConstantInt::get(LongTy, 0), 18991c431b323d776362490bbf7cc796b74fedaf19f2Owen Anderson classSymbolName); 1900c51db23f58bd887b16cf91554aa86c430a2496e7Fariborz Jahanian } 19011eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 19022bebbf0acee55404de4b8846713b64429e744e8fDaniel Dunbar // Get the size of instances. 19035f022d82696c84e4d127c558871d68ac6273274eKen Dyck int instanceSize = 19045f022d82696c84e4d127c558871d68ac6273274eKen Dyck Context.getASTObjCImplementationLayout(OID).getSize().getQuantity(); 19057ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 19067ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about instance variables. 19075f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> IvarNames; 19085f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> IvarTypes; 19095f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> IvarOffsets; 19101eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1911d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian std::vector<llvm::Constant*> IvarOffsetValues; 1912917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall SmallVector<bool, 16> WeakIvars; 1913917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall SmallVector<bool, 16> StrongIvars; 1914d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 19151eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump int superInstanceSize = !SuperClassDecl ? 0 : 19165f022d82696c84e4d127c558871d68ac6273274eKen Dyck Context.getASTObjCInterfaceLayout(SuperClassDecl).getSize().getQuantity(); 19179cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // For non-fragile ivars, set the instance size to 0 - {the size of just this 19189cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // class}. The runtime will then set this to the correct value on load. 19199cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian if (CGM.getContext().getLangOptions().ObjCNonFragileABI) { 19209cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian instanceSize = 0 - (instanceSize - superInstanceSize); 19219cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 19227f63cb098f2461643f71ea590c1a477603f27f63David Chisnall 1923db8264e4c5ffd7af6fbad4ca4306bd382bb02691Jordy Rose for (const ObjCIvarDecl *IVD = ClassDecl->all_declared_ivar_begin(); IVD; 1924db8264e4c5ffd7af6fbad4ca4306bd382bb02691Jordy Rose IVD = IVD->getNextIvar()) { 19257ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Store the name 19267f63cb098f2461643f71ea590c1a477603f27f63David Chisnall IvarNames.push_back(MakeConstantString(IVD->getNameAsString())); 19277ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Get the type encoding for this ivar 19287ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 19297f63cb098f2461643f71ea590c1a477603f27f63David Chisnall Context.getObjCEncodingForType(IVD->getType(), TypeStr); 19308a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall IvarTypes.push_back(MakeConstantString(TypeStr)); 19317ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Get the offset 1932d901da531433254210a08e8b1f9e1ad049b340aaDavid Chisnall uint64_t BaseOffset = ComputeIvarBaseOffset(CGM, OID, IVD); 1933aecbf24a6bad049437f8fec97e557d414003a3dbDavid Chisnall uint64_t Offset = BaseOffset; 19349cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian if (CGM.getContext().getLangOptions().ObjCNonFragileABI) { 1935d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian Offset = BaseOffset - superInstanceSize; 19369cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 193763ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall llvm::Constant *OffsetValue = llvm::ConstantInt::get(IntTy, Offset); 193863ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall // Create the direct offset value 193963ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall std::string OffsetName = "__objc_ivar_offset_value_" + ClassName +"." + 194063ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall IVD->getNameAsString(); 194163ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall llvm::GlobalVariable *OffsetVar = TheModule.getGlobalVariable(OffsetName); 194263ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall if (OffsetVar) { 194363ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall OffsetVar->setInitializer(OffsetValue); 194463ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall // If this is the real definition, change its linkage type so that 194563ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall // different modules will use this one, rather than their private 194663ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall // copy. 194763ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall OffsetVar->setLinkage(llvm::GlobalValue::ExternalLinkage); 194863ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall } else 194963ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall OffsetVar = new llvm::GlobalVariable(TheModule, IntTy, 1950d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian false, llvm::GlobalValue::ExternalLinkage, 195163ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall OffsetValue, 1952d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian "__objc_ivar_offset_value_" + ClassName +"." + 195363ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall IVD->getNameAsString()); 195463ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall IvarOffsets.push_back(OffsetValue); 195563ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall IvarOffsetValues.push_back(OffsetVar); 1956917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall Qualifiers::ObjCLifetime lt = IVD->getType().getQualifiers().getObjCLifetime(); 1957917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall switch (lt) { 1958917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall case Qualifiers::OCL_Strong: 1959917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall StrongIvars.push_back(true); 1960917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall WeakIvars.push_back(false); 1961917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall break; 1962917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall case Qualifiers::OCL_Weak: 1963917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall StrongIvars.push_back(false); 1964917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall WeakIvars.push_back(true); 1965917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall break; 1966917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall default: 1967917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall StrongIvars.push_back(false); 1968917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall WeakIvars.push_back(false); 1969917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall } 19707ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 1971917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::Constant *StrongIvarBitmap = MakeBitField(StrongIvars); 1972917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::Constant *WeakIvarBitmap = MakeBitField(WeakIvars); 19739f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::GlobalVariable *IvarOffsetArray = 19749f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall MakeGlobalArray(PtrToIntTy, IvarOffsetValues, ".ivar.offsets"); 19759f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 19767ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 19777ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about instance methods 19785f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<Selector, 16> InstanceMethodSels; 19795f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> InstanceMethodTypes; 19801eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump for (ObjCImplementationDecl::instmeth_iterator 198117945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = OID->instmeth_begin(), endIter = OID->instmeth_end(); 1982653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter != endIter ; iter++) { 19837ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar InstanceMethodSels.push_back((*iter)->getSelector()); 19847ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 19857ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar Context.getObjCEncodingForMethodDecl((*iter),TypeStr); 19868a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall InstanceMethodTypes.push_back(MakeConstantString(TypeStr)); 19877ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 1988d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 1989d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian llvm::Constant *Properties = GeneratePropertyList(OID, InstanceMethodSels, 1990d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian InstanceMethodTypes); 1991d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 19927ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 19937ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect information about class methods 19945f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<Selector, 16> ClassMethodSels; 19955f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 16> ClassMethodTypes; 1996653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor for (ObjCImplementationDecl::classmeth_iterator 199717945a0f64fe03ff6ec0c2146005a87636e3ac12Argyrios Kyrtzidis iter = OID->classmeth_begin(), endIter = OID->classmeth_end(); 1998653f1b1bf293a9bd96fd4dd6372e779cc7af1597Douglas Gregor iter != endIter ; iter++) { 19997ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar ClassMethodSels.push_back((*iter)->getSelector()); 20007ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar std::string TypeStr; 20017ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar Context.getObjCEncodingForMethodDecl((*iter),TypeStr); 20028a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall ClassMethodTypes.push_back(MakeConstantString(TypeStr)); 20037ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar } 20047ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar // Collect the names of referenced protocols 20055f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<std::string, 16> Protocols; 20067ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar const ObjCList<ObjCProtocolDecl> &Protos =ClassDecl->getReferencedProtocols(); 20077ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar for (ObjCList<ObjCProtocolDecl>::iterator I = Protos.begin(), 20087ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar E = Protos.end(); I != E; ++I) 2009d9d22dd9c94618490dbffb0e2caf222530ca39d3Chris Lattner Protocols.push_back((*I)->getNameAsString()); 20107ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 20117ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 20127ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 201320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Get the superclass pointer. 201420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SuperClass; 20158ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner if (!SuperClassName.empty()) { 201620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov SuperClass = MakeConstantString(SuperClassName, ".super_class_name"); 201720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } else { 201803e205031b08669f05c41eed5b896fc94c4a12bbOwen Anderson SuperClass = llvm::ConstantPointerNull::get(PtrToInt8Ty); 201920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 202020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Empty vector used to construct empty method lists 20215f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<llvm::Constant*, 1> empty; 202220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Generate the method and instance variable lists 202320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MethodList = GenerateMethodList(ClassName, "", 2024a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner InstanceMethodSels, InstanceMethodTypes, false); 202520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *ClassMethodList = GenerateMethodList(ClassName, "", 2026a4210076fc1d7ac0a20b8b4a79e18a8ae33b9c69Chris Lattner ClassMethodSels, ClassMethodTypes, true); 202720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *IvarList = GenerateIvarList(IvarNames, IvarTypes, 202820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov IvarOffsets); 20291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Irrespective of whether we are compiling for a fragile or non-fragile ABI, 20308a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // we emit a symbol containing the offset for each ivar in the class. This 20318a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // allows code compiled for the non-Fragile ABI to inherit from code compiled 20328a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // for the legacy ABI, without causing problems. The converse is also 20338a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // possible, but causes all ivar accesses to be fragile. 2034e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall 20358a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // Offset pointer for getting at the correct field in the ivar list when 20368a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // setting up the alias. These are: The base address for the global, the 20378a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // ivar array (second field), the ivar in this list (set for each ivar), and 20388a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // the offset (third field in ivar structure) 2039917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::Type *IndexTy = Int32Ty; 20408a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::Constant *offsetPointerIndexes[] = {Zeros[0], 20411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::ConstantInt::get(IndexTy, 1), 0, 20428a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::ConstantInt::get(IndexTy, 2) }; 20438a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall 2044db8264e4c5ffd7af6fbad4ca4306bd382bb02691Jordy Rose unsigned ivarIndex = 0; 2045db8264e4c5ffd7af6fbad4ca4306bd382bb02691Jordy Rose for (const ObjCIvarDecl *IVD = ClassDecl->all_declared_ivar_begin(); IVD; 2046db8264e4c5ffd7af6fbad4ca4306bd382bb02691Jordy Rose IVD = IVD->getNextIvar()) { 20478a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall const std::string Name = "__objc_ivar_offset_" + ClassName + '.' 2048e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall + IVD->getNameAsString(); 2049db8264e4c5ffd7af6fbad4ca4306bd382bb02691Jordy Rose offsetPointerIndexes[2] = llvm::ConstantInt::get(IndexTy, ivarIndex); 20508a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // Get the correct ivar field 20518a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::Constant *offsetValue = llvm::ConstantExpr::getGetElementPtr( 2052a5c04344fa70d6eec34344760c1fe511e16f2d76Jay Foad IvarList, offsetPointerIndexes); 2053e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // Get the existing variable, if one exists. 20548a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::GlobalVariable *offset = TheModule.getNamedGlobal(Name); 20558a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall if (offset) { 20568a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall offset->setInitializer(offsetValue); 20578a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // If this is the real definition, change its linkage type so that 20588a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // different modules will use this one, rather than their private 20598a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // copy. 20608a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall offset->setLinkage(llvm::GlobalValue::ExternalLinkage); 20618a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall } else { 20628a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // Add a new alias if there isn't one already. 20638a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall offset = new llvm::GlobalVariable(TheModule, offsetValue->getType(), 20648a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall false, llvm::GlobalValue::ExternalLinkage, offsetValue, Name); 20658a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall } 2066db8264e4c5ffd7af6fbad4ca4306bd382bb02691Jordy Rose ++ivarIndex; 20678a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall } 2068917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::Constant *Zero64 = llvm::ConstantInt::get(Int64Ty, 0); 206920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov //Generate metaclass for class methods 207020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *MetaClassStruct = GenerateClassStructure(NULLPtr, 20711804463ee790ac3cc73f72597ccb38b983f7d263David Chisnall NULLPtr, 0x12L, ClassName.c_str(), 0, Zeros[0], GenerateIvarList( 2072917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall empty, empty, empty), ClassMethodList, NULLPtr, 2073917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall NULLPtr, NULLPtr, Zero64, Zero64, true); 20745efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar 207520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Generate the class structure 20768ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner llvm::Constant *ClassStruct = 2077d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian GenerateClassStructure(MetaClassStruct, SuperClass, 0x11L, 20788ec03f58c33c33a917f54bb7f2cd61b6d7ffe0caChris Lattner ClassName.c_str(), 0, 20794a28d5deeba33722aa009eab488591fb9055cc7eOwen Anderson llvm::ConstantInt::get(LongTy, instanceSize), IvarList, 2080d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian MethodList, GenerateProtocolList(Protocols), IvarOffsetArray, 2081917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall Properties, StrongIvarBitmap, WeakIvarBitmap); 20825efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar 20835efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar // Resolve the class aliases, if they exist. 20845efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar if (ClassPtrAlias) { 20850b9c22b61a3c99c8c0e8d898adb0f60afa76584eDavid Chisnall ClassPtrAlias->replaceAllUsesWith( 20863c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::ConstantExpr::getBitCast(ClassStruct, IdTy)); 20870b9c22b61a3c99c8c0e8d898adb0f60afa76584eDavid Chisnall ClassPtrAlias->eraseFromParent(); 20885efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar ClassPtrAlias = 0; 20895efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } 20905efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar if (MetaClassPtrAlias) { 20910b9c22b61a3c99c8c0e8d898adb0f60afa76584eDavid Chisnall MetaClassPtrAlias->replaceAllUsesWith( 20923c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson llvm::ConstantExpr::getBitCast(MetaClassStruct, IdTy)); 20930b9c22b61a3c99c8c0e8d898adb0f60afa76584eDavid Chisnall MetaClassPtrAlias->eraseFromParent(); 20945efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar MetaClassPtrAlias = 0; 20955efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar } 20965efccb1ab81a029ddeb3ea18e239d0ddc124ec2bDaniel Dunbar 209720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Add class structure to list to be added to the symtab later 20983c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson ClassStruct = llvm::ConstantExpr::getBitCast(ClassStruct, PtrToInt8Ty); 209920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.push_back(ClassStruct); 210020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 210120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 2102c38e9affd4519ea199af22419c8c794973cc4b23Fariborz Jahanian 21031eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumpllvm::Function *CGObjCGNU::ModuleInitFunction() { 210420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Only emit an ObjC load function if no Objective-C stuff has been called 210520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov if (Classes.empty() && Categories.empty() && ConstantStrings.empty() && 21069f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall ExistingProtocols.empty() && SelectorTable.empty()) 210720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return NULL; 21081b8956e1ce4c5770982d6e59edb16979b500677aEli Friedman 2109d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian // Add all referenced protocols to a category. 2110d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian GenerateProtocolHolderCategory(); 2111d9a1db3a4ded1c8f0daa43c0d6167576e2766453Fariborz Jahanian 21122acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::StructType *SelStructTy = dyn_cast<llvm::StructType>( 2113e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner SelectorTy->getElementType()); 2114ef6de3da8572607f786303c07150daa6e140ab19Jay Foad llvm::Type *SelStructPtrTy = SelectorTy; 2115e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner if (SelStructTy == 0) { 21167650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner SelStructTy = llvm::StructType::get(PtrToInt8Ty, PtrToInt8Ty, NULL); 211796e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson SelStructPtrTy = llvm::PointerType::getUnqual(SelStructTy); 2118e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner } 2119e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner 212020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Elements; 212171238f67c5df13eef19450d66b7a7ab28377192aChris Lattner llvm::Constant *Statics = NULLPtr; 212220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Generate statics list: 212371238f67c5df13eef19450d66b7a7ab28377192aChris Lattner if (ConstantStrings.size()) { 212496e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *StaticsArrayTy = llvm::ArrayType::get(PtrToInt8Ty, 212571238f67c5df13eef19450d66b7a7ab28377192aChris Lattner ConstantStrings.size() + 1); 212671238f67c5df13eef19450d66b7a7ab28377192aChris Lattner ConstantStrings.push_back(NULLPtr); 21278a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall 21285f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef StringClass = CGM.getLangOptions().ObjCConstantStringClass; 21299f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 21301b0969590e712d7d52fc9c0d43d3ab85c36d07a6Daniel Dunbar if (StringClass.empty()) StringClass = "NXConstantString"; 21319f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 21328a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall Elements.push_back(MakeConstantString(StringClass, 21338a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall ".objc_static_class_name")); 21347db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson Elements.push_back(llvm::ConstantArray::get(StaticsArrayTy, 213571238f67c5df13eef19450d66b7a7ab28377192aChris Lattner ConstantStrings)); 21361eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::StructType *StaticsListTy = 21377650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType::get(PtrToInt8Ty, StaticsArrayTy, NULL); 2138a1cf15f4680e5cf39e72e28c5ea854fcba792e84Owen Anderson llvm::Type *StaticsListPtrTy = 213996e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::PointerType::getUnqual(StaticsListTy); 214071238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Statics = MakeGlobal(StaticsListTy, Elements, ".objc_statics"); 21411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::ArrayType *StaticsListArrayTy = 214296e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType::get(StaticsListPtrTy, 2); 214371238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Elements.clear(); 214471238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Elements.push_back(Statics); 2145c9c88b4159791c48e486ca94e3743b5979e2b7a6Owen Anderson Elements.push_back(llvm::Constant::getNullValue(StaticsListPtrTy)); 214671238f67c5df13eef19450d66b7a7ab28377192aChris Lattner Statics = MakeGlobal(StaticsListArrayTy, Elements, ".objc_statics_ptr"); 21473c4972def972f8ca44dcd0561779a12aaa6fec97Owen Anderson Statics = llvm::ConstantExpr::getBitCast(Statics, PtrTy); 214871238f67c5df13eef19450d66b7a7ab28377192aChris Lattner } 214920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Array of classes, categories, and constant objects 215096e0fc726c6fe7538522c60743705d5e696b40afOwen Anderson llvm::ArrayType *ClassListTy = llvm::ArrayType::get(PtrToInt8Ty, 215120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.size() + Categories.size() + 2); 21527650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType *SymTabTy = llvm::StructType::get(LongTy, SelStructPtrTy, 21530032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::Type::getInt16Ty(VMContext), 21540032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::Type::getInt16Ty(VMContext), 2155630404b16e886238ed68a1abbfe2e548f43aa664Chris Lattner ClassListTy, NULL); 215620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 215720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 215820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Pointer to an array of selectors used in this module. 215920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::vector<llvm::Constant*> Selectors; 21609f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall std::vector<llvm::GlobalAlias*> SelectorAliases; 21619f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall for (SelectorMap::iterator iter = SelectorTable.begin(), 21629f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall iterEnd = SelectorTable.end(); iter != iterEnd ; ++iter) { 21639f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 21649f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall std::string SelNameStr = iter->first.getAsString(); 21659f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::Constant *SelName = ExportUniqueString(SelNameStr, ".objc_sel_name"); 21669f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 21675f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVectorImpl<TypedSelector> &Types = iter->second; 21685f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner for (SmallVectorImpl<TypedSelector>::iterator i = Types.begin(), 21699f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall e = Types.end() ; i!=e ; i++) { 21709f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 21719f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::Constant *SelectorTypeEncoding = NULLPtr; 21729f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall if (!i->first.empty()) 21739f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SelectorTypeEncoding = MakeConstantString(i->first, ".objc_sel_types"); 21749f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 21759f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Elements.push_back(SelName); 21769f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Elements.push_back(SelectorTypeEncoding); 21779f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Selectors.push_back(llvm::ConstantStruct::get(SelStructTy, Elements)); 21789f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Elements.clear(); 21799f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 21809f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // Store the selector alias for later replacement 21819f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SelectorAliases.push_back(i->second); 21829f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall } 218320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 21849f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall unsigned SelectorCount = Selectors.size(); 21859f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // NULL-terminate the selector list. This should not actually be required, 21869f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // because the selector list has a length field. Unfortunately, the GCC 21879f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // runtime decides to ignore the length field and expects a NULL terminator, 21889f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // and GCC cooperates with this by always setting the length to 0. 218920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 219020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(NULLPtr); 219108e252425ca2cbdc44ba65d9a657ed5398014e36Owen Anderson Selectors.push_back(llvm::ConstantStruct::get(SelStructTy, Elements)); 219220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 21939f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 219420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Number of static selectors 21959f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Elements.push_back(llvm::ConstantInt::get(LongTy, SelectorCount)); 21969f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall llvm::Constant *SelectorList = MakeGlobalArray(SelStructTy, Selectors, 219720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov ".objc_selector_list"); 21981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Elements.push_back(llvm::ConstantExpr::getBitCast(SelectorList, 2199e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner SelStructPtrTy)); 220020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 220120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Now that all of the static selectors exist, create pointers to them. 22029f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall for (unsigned int i=0 ; i<SelectorCount ; i++) { 22039f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 220420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *Idxs[] = {Zeros[0], 2205917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall llvm::ConstantInt::get(Int32Ty, i), Zeros[0]}; 22069f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // FIXME: We're generating redundant loads and stores here! 2207c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall llvm::Constant *SelPtr = llvm::ConstantExpr::getGetElementPtr(SelectorList, 2208a5c04344fa70d6eec34344760c1fe511e16f2d76Jay Foad makeArrayRef(Idxs, 2)); 2209e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner // If selectors are defined as an opaque type, cast the pointer to this 2210e160c9b09d2f5098dfdcca99b9c6485487e0c252Chris Lattner // type. 2211c7ef46254339450de33125f712c7b99afaf4fbcdDavid Chisnall SelPtr = llvm::ConstantExpr::getBitCast(SelPtr, SelectorTy); 22129f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SelectorAliases[i]->replaceAllUsesWith(SelPtr); 22139f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SelectorAliases[i]->eraseFromParent(); 221420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov } 22159f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 221620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Number of classes defined. 22171eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Elements.push_back(llvm::ConstantInt::get(llvm::Type::getInt16Ty(VMContext), 221820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.size())); 221920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Number of categories defined 22201eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Elements.push_back(llvm::ConstantInt::get(llvm::Type::getInt16Ty(VMContext), 222120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Categories.size())); 222220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create an array of classes, then categories, then static object instances 222320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.insert(Classes.end(), Categories.begin(), Categories.end()); 222420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // NULL-terminated list of static object instances (mainly constant strings) 222520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.push_back(Statics); 222620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Classes.push_back(NULLPtr); 22277db6d838aad4083fe86d7bf703a75fe6e8a17856Owen Anderson llvm::Constant *ClassList = llvm::ConstantArray::get(ClassListTy, Classes); 222820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(ClassList); 22291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // Construct the symbol table 223020ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Constant *SymTab= MakeGlobal(SymTabTy, Elements); 223120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 223220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // The symbol table is contained in a module which has some version-checking 223320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // constants 22347650d95a1a616ea300f37126a8dfc93dc19a662aChris Lattner llvm::StructType * ModuleTy = llvm::StructType::get(LongTy, LongTy, 2235a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall PtrToInt8Ty, llvm::PointerType::getUnqual(SymTabTy), 2236f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall (RuntimeVersion >= 10) ? IntTy : NULL, NULL); 223720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.clear(); 22389f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // Runtime version, used for ABI compatibility checking. 22399f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Elements.push_back(llvm::ConstantInt::get(LongTy, RuntimeVersion)); 224091a0b51438e5259a79d68d7450c453827beed9e2Fariborz Jahanian // sizeof(ModuleTy) 224174a8bbf0654fbbf37be04b240b5bbe591f37f242Benjamin Kramer llvm::TargetData td(&TheModule); 2242e0afc892e75f526f7ecce7dd152d946337632efeKen Dyck Elements.push_back( 2243e0afc892e75f526f7ecce7dd152d946337632efeKen Dyck llvm::ConstantInt::get(LongTy, 2244e0afc892e75f526f7ecce7dd152d946337632efeKen Dyck td.getTypeSizeInBits(ModuleTy) / 2245e0afc892e75f526f7ecce7dd152d946337632efeKen Dyck CGM.getContext().getCharWidth())); 22469f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall 22479f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall // The path to the source file where this module was declared 22489f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall SourceManager &SM = CGM.getContext().getSourceManager(); 22499f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall const FileEntry *mainFile = SM.getFileEntryForID(SM.getMainFileID()); 22509f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall std::string path = 22519f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall std::string(mainFile->getDir()->getName()) + '/' + mainFile->getName(); 22529f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Elements.push_back(MakeConstantString(path, ".objc_source_file_name")); 225320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Elements.push_back(SymTab); 2254a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall 2255f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall if (RuntimeVersion >= 10) 2256e289d81369914678db386f6aa86faf8f178e245dDouglas Gregor switch (CGM.getLangOptions().getGC()) { 2257f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall case LangOptions::GCOnly: 2258a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall Elements.push_back(llvm::ConstantInt::get(IntTy, 2)); 2259a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall break; 2260f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall case LangOptions::NonGC: 2261f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall if (CGM.getLangOptions().ObjCAutoRefCount) 2262f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall Elements.push_back(llvm::ConstantInt::get(IntTy, 1)); 2263f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall else 2264f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall Elements.push_back(llvm::ConstantInt::get(IntTy, 0)); 2265f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall break; 2266f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall case LangOptions::HybridGC: 2267f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall Elements.push_back(llvm::ConstantInt::get(IntTy, 1)); 2268f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall break; 2269f074885425af40e5e03569371e453d9f7ae43aa6David Chisnall } 2270a2120039ed08a5d5d6096e2560fd32c6128e951aDavid Chisnall 227120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Value *Module = MakeGlobal(ModuleTy, Elements); 227220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 227320ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // Create the load function calling the runtime entry point with the module 227420ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov // structure 227520ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::Function * LoadFunction = llvm::Function::Create( 22760032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::FunctionType::get(llvm::Type::getVoidTy(VMContext), false), 227720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov llvm::GlobalValue::InternalLinkage, ".objc_load_function", 227820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov &TheModule); 22790032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::BasicBlock *EntryBB = 22800032b2781b4deb131f8c9b7968f2030bf2489cddOwen Anderson llvm::BasicBlock::Create(VMContext, "entry", LoadFunction); 2281a1cf15f4680e5cf39e72e28c5ea854fcba792e84Owen Anderson CGBuilderTy Builder(VMContext); 228220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Builder.SetInsertPoint(EntryBB); 228326c8294dacc2efc83d8d560593ff863e7a32a48fFariborz Jahanian 228495d318c4c10437db40ca6e15fdf32e04012da58eBenjamin Kramer llvm::FunctionType *FT = 2285da549e8995c447542d5631b8b67fcc3a9582797aJay Foad llvm::FunctionType::get(Builder.getVoidTy(), 2286da549e8995c447542d5631b8b67fcc3a9582797aJay Foad llvm::PointerType::getUnqual(ModuleTy), true); 228795d318c4c10437db40ca6e15fdf32e04012da58eBenjamin Kramer llvm::Value *Register = CGM.CreateRuntimeFunction(FT, "__objc_exec_class"); 228820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Builder.CreateCall(Register, Module); 228920ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov Builder.CreateRetVoid(); 22909cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian 229120ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov return LoadFunction; 229220ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov} 22937ded7f4983dc4a20561db7a8d02c6b2435030961Daniel Dunbar 2294679a502d462ef819e6175b58e255ca3f3391e7cfFariborz Jahanianllvm::Function *CGObjCGNU::GenerateMethod(const ObjCMethodDecl *OMD, 22951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const ObjCContainerDecl *CD) { 22961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const ObjCCategoryImplDecl *OCD = 22973e0a540b6d846178857289ec0eb8470a278d11a3Steve Naroff dyn_cast<ObjCCategoryImplDecl>(OMD->getDeclContext()); 22985f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef CategoryName = OCD ? OCD->getName() : ""; 22995f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef ClassName = CD->getName(); 23009f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall Selector MethodName = OMD->getSelector(); 2301f8d49f64ef6ab7e632717a31631fc289aab69428Douglas Gregor bool isClassMethod = !OMD->isInstanceMethod(); 2302391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner 2303541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel Dunbar CodeGenTypes &Types = CGM.getTypes(); 23042acc6e3feda5e4f7d9009bdcf8b1cd777fecfe2dChris Lattner llvm::FunctionType *MethodTy = 2305541b63b1a9db77e4a8670e9823711c2c12e58afbDaniel Dunbar Types.GetFunctionType(Types.getFunctionInfo(OMD), OMD->isVariadic()); 230620ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov std::string FunctionName = SymbolNameForMethod(ClassName, CategoryName, 230720ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov MethodName, isClassMethod); 230820ff3108fcd2c3bd734dc79efc22ebaa090abd41Anton Korobeynikov 2309d6c93d703541c992e06eb9a59a2d826a30da65b2Daniel Dunbar llvm::Function *Method 23101eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump = llvm::Function::Create(MethodTy, 23111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::GlobalValue::InternalLinkage, 23121eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump FunctionName, 23131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump &TheModule); 2314391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner return Method; 2315391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner} 2316391d77a26382dddf25da73e29fc1fa5aaaea4c6fChris Lattner 2317789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnallllvm::Constant *CGObjCGNU::GetPropertyGetFunction() { 23189f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall return GetPropertyFn; 231949f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar} 232049f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar 2321789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnallllvm::Constant *CGObjCGNU::GetPropertySetFunction() { 23229f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall return SetPropertyFn; 232349f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar} 232449f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar 2325789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnallllvm::Constant *CGObjCGNU::GetGetStructFunction() { 23269f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall return GetStructPropertyFn; 23278fac25d33b13e25f512dd921d4d5a4b565f5d175David Chisnall} 2328789ecdebd04aebdb2d6b801ebe8e04a189ebc023David Chisnallllvm::Constant *CGObjCGNU::GetSetStructFunction() { 23299f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall return SetStructPropertyFn; 23306cc590602f41c3e98e8af0023d54296c8eca7910Fariborz Jahanian} 23316cc590602f41c3e98e8af0023d54296c8eca7910Fariborz Jahanian 2332309a4368cd299cff30ab22709e2b772cf8059e45Daniel Dunbarllvm::Constant *CGObjCGNU::EnumerationMutationFunction() { 23339f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall return EnumerationMutationFn; 23342abd89c039e835e84519a4cd8a7495899a70153dAnders Carlsson} 23352abd89c039e835e84519a4cd8a7495899a70153dAnders Carlsson 23369f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallvoid CGObjCGNU::EmitSynchronizedStmt(CodeGenFunction &CGF, 2337f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall const ObjCAtSynchronizedStmt &S) { 23389735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall EmitAtSynchronizedStmt(CGF, S, SyncEnterFn, SyncExitFn); 2339f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall} 23405dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 23415dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 23429f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallvoid CGObjCGNU::EmitTryStmt(CodeGenFunction &CGF, 2343f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall const ObjCAtTryStmt &S) { 2344f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // Unlike the Apple non-fragile runtimes, which also uses 2345f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // unwind-based zero cost exceptions, the GNU Objective C runtime's 2346f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // EH support isn't a veneer over C++ EH. Instead, exception 2347f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // objects are created by __objc_exception_throw and destroyed by 2348f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // the personality function; this avoids the need for bracketing 2349f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // catch handlers with calls to __blah_begin_catch/__blah_end_catch 2350f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // (or even _Unwind_DeleteException), but probably doesn't 2351f1549f66a8216a78112286e3978cea2c29d6334cJohn McCall // interoperate very well with foreign exceptions. 23529735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // 235380558d2db10a96eada4d8fb79949b3263b44652bDavid Chisnall // In Objective-C++ mode, we actually emit something equivalent to the C++ 23549735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall // exception handler. 23559735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall EmitTryCatchStmt(CGF, S, EnterCatchFn, ExitCatchFn, ExceptionReThrowFn); 23569735ca6e01113aec6a825dd5b1cb1b98fb377d31David Chisnall return ; 235764d5d6c5903157c521af496479d06dc26032d718Anders Carlsson} 235864d5d6c5903157c521af496479d06dc26032d718Anders Carlsson 23599f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallvoid CGObjCGNU::EmitThrowStmt(CodeGenFunction &CGF, 236049f6602707887eea1a558a1dffe0213102f887f2Daniel Dunbar const ObjCAtThrowStmt &S) { 23615dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::Value *ExceptionAsObject; 23625dc0867af17b3bd6f567897433853b2b4767446cChris Lattner 23635dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (const Expr *ThrowExpr = S.getThrowExpr()) { 23642b014d6c0c6b8ac94b416ac37dfc7931f20777a7John McCall llvm::Value *Exception = CGF.EmitObjCThrowOperand(ThrowExpr); 23651e64a9531bf6e9d99ad3271b3a735ef702689b06Fariborz Jahanian ExceptionAsObject = Exception; 23665dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } else { 23671eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump assert((!CGF.ObjCEHValueStack.empty() && CGF.ObjCEHValueStack.back()) && 23685dc0867af17b3bd6f567897433853b2b4767446cChris Lattner "Unexpected rethrow outside @catch block."); 23695dc0867af17b3bd6f567897433853b2b4767446cChris Lattner ExceptionAsObject = CGF.ObjCEHValueStack.back(); 23705dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 2371578faa837b552403e2002b97fdfbfde14f2448e5Benjamin Kramer ExceptionAsObject = CGF.Builder.CreateBitCast(ExceptionAsObject, IdTy); 23721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 23735dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Note: This may have to be an invoke, if we want to support constructs like: 23745dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // @try { 23755dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // @throw(obj); 23765dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // } 23775dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // @catch(id) ... 23785dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // 23795dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // This is effectively turning @throw into an incredibly-expensive goto, but 23805dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // it may happen as a result of inlining followed by missed optimizations, or 23815dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // as a result of stupidity. 23825dc0867af17b3bd6f567897433853b2b4767446cChris Lattner llvm::BasicBlock *UnwindBB = CGF.getInvokeDest(); 23835dc0867af17b3bd6f567897433853b2b4767446cChris Lattner if (!UnwindBB) { 23849f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall CGF.Builder.CreateCall(ExceptionThrowFn, ExceptionAsObject); 23855dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.CreateUnreachable(); 23865dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } else { 23874c7d9f1507d0f102bd4133bba63348636facd469Jay Foad CGF.Builder.CreateInvoke(ExceptionThrowFn, UnwindBB, UnwindBB, 23884c7d9f1507d0f102bd4133bba63348636facd469Jay Foad ExceptionAsObject); 23895dc0867af17b3bd6f567897433853b2b4767446cChris Lattner } 23905dc0867af17b3bd6f567897433853b2b4767446cChris Lattner // Clear the insertion point to indicate we are in unreachable code. 23915dc0867af17b3bd6f567897433853b2b4767446cChris Lattner CGF.Builder.ClearInsertionPoint(); 239264d5d6c5903157c521af496479d06dc26032d718Anders Carlsson} 239364d5d6c5903157c521af496479d06dc26032d718Anders Carlsson 23949f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallllvm::Value * CGObjCGNU::EmitObjCWeakRead(CodeGenFunction &CGF, 23951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *AddrWeakObj) { 2396ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall CGBuilderTy B = CGF.Builder; 239731fc0c1a16dabd397dd3323fb0dbe7052b87abd0David Chisnall AddrWeakObj = EnforceType(B, AddrWeakObj, PtrToIdTy); 2398ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall return B.CreateCall(WeakReadFn, AddrWeakObj); 23996dc2317b59cb1180a59f6c283d96b7a5dfeb5307Fariborz Jahanian} 24006dc2317b59cb1180a59f6c283d96b7a5dfeb5307Fariborz Jahanian 24019f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallvoid CGObjCGNU::EmitObjCWeakAssign(CodeGenFunction &CGF, 24021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *src, llvm::Value *dst) { 2403ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall CGBuilderTy B = CGF.Builder; 2404ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall src = EnforceType(B, src, IdTy); 2405ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall dst = EnforceType(B, dst, PtrToIdTy); 2406ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall B.CreateCall2(WeakAssignFn, src, dst); 24073e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian} 24083e283e344595e0bd499b13b30a92b7d9c10a2140Fariborz Jahanian 24099f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallvoid CGObjCGNU::EmitObjCGlobalAssign(CodeGenFunction &CGF, 2410021a7a63984f0f912dc9e9dae2a1b3e1509a40ceFariborz Jahanian llvm::Value *src, llvm::Value *dst, 2411021a7a63984f0f912dc9e9dae2a1b3e1509a40ceFariborz Jahanian bool threadlocal) { 2412ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall CGBuilderTy B = CGF.Builder; 2413ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall src = EnforceType(B, src, IdTy); 2414ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall dst = EnforceType(B, dst, PtrToIdTy); 2415021a7a63984f0f912dc9e9dae2a1b3e1509a40ceFariborz Jahanian if (!threadlocal) 2416021a7a63984f0f912dc9e9dae2a1b3e1509a40ceFariborz Jahanian B.CreateCall2(GlobalAssignFn, src, dst); 2417021a7a63984f0f912dc9e9dae2a1b3e1509a40ceFariborz Jahanian else 2418021a7a63984f0f912dc9e9dae2a1b3e1509a40ceFariborz Jahanian // FIXME. Add threadloca assign API 2419b219cfc4d75f0a03630b7c4509ef791b7e97b2c8David Blaikie llvm_unreachable("EmitObjCGlobalAssign - Threal Local API NYI"); 242058626500527695865683d1d65053743de8770b60Fariborz Jahanian} 242158626500527695865683d1d65053743de8770b60Fariborz Jahanian 24229f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallvoid CGObjCGNU::EmitObjCIvarAssign(CodeGenFunction &CGF, 24236c7a1f364796ce1acb988714e9e42076d1ce332eFariborz Jahanian llvm::Value *src, llvm::Value *dst, 24246c7a1f364796ce1acb988714e9e42076d1ce332eFariborz Jahanian llvm::Value *ivarOffset) { 2425ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall CGBuilderTy B = CGF.Builder; 2426ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall src = EnforceType(B, src, IdTy); 2427b44eda31a214ad88616acbe28c3f0a70268adc6cDavid Chisnall dst = EnforceType(B, dst, IdTy); 2428ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall B.CreateCall3(IvarAssignFn, src, dst, ivarOffset); 24297eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanian} 24307eda8367cf63caee8acf907356b1d199ccaa6e89Fariborz Jahanian 24319f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallvoid CGObjCGNU::EmitObjCStrongCastAssign(CodeGenFunction &CGF, 24321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *src, llvm::Value *dst) { 2433ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall CGBuilderTy B = CGF.Builder; 2434ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall src = EnforceType(B, src, IdTy); 2435ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall dst = EnforceType(B, dst, PtrToIdTy); 2436ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall B.CreateCall2(StrongCastAssignFn, src, dst); 243758626500527695865683d1d65053743de8770b60Fariborz Jahanian} 243858626500527695865683d1d65053743de8770b60Fariborz Jahanian 24399f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallvoid CGObjCGNU::EmitGCMemmoveCollectable(CodeGenFunction &CGF, 24401eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::Value *DestPtr, 2441082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian llvm::Value *SrcPtr, 244255bcace250e1ff366e4482714b344b8cbc8be5f3Fariborz Jahanian llvm::Value *Size) { 2443ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall CGBuilderTy B = CGF.Builder; 244468e5e1331d99140ae5dd7b27c3dd28618827dfc8David Chisnall DestPtr = EnforceType(B, DestPtr, PtrTy); 244568e5e1331d99140ae5dd7b27c3dd28618827dfc8David Chisnall SrcPtr = EnforceType(B, SrcPtr, PtrTy); 2446ef6e0f3218b64d8ea3b8b57ee657fec8da228a43David Chisnall 244755bcace250e1ff366e4482714b344b8cbc8be5f3Fariborz Jahanian B.CreateCall3(MemMoveFn, DestPtr, SrcPtr, Size); 2448082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian} 2449082b02e8403d3ee9d2ded969fbe0e5d472f04cd8Fariborz Jahanian 24509cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanianllvm::GlobalVariable *CGObjCGNU::ObjCIvarOffsetVariable( 24519cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCInterfaceDecl *ID, 24529cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCIvarDecl *Ivar) { 24539cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const std::string Name = "__objc_ivar_offset_" + ID->getNameAsString() 24549cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian + '.' + Ivar->getNameAsString(); 24559cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // Emit the variable and initialize it with what we think the correct value 24569cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // is. This allows code compiled with non-fragile ivars to work correctly 24579cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // when linked against code which isn't (most of the time). 24588a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::GlobalVariable *IvarOffsetPointer = TheModule.getNamedGlobal(Name); 24598a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall if (!IvarOffsetPointer) { 2460e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // This will cause a run-time crash if we accidentally use it. A value of 2461e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // 0 would seem more sensible, but will silently overwrite the isa pointer 2462e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // causing a great deal of confusion. 2463e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall uint64_t Offset = -1; 2464e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // We can't call ComputeIvarBaseOffset() here if we have the 2465e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // implementation, because it will create an invalid ASTRecordLayout object 2466e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // that we are then stuck with forever, so we only initialize the ivar 2467e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // offset variable with a guess if we only have the interface. The 2468e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // initializer will be reset later anyway, when we are generating the class 2469e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall // description. 2470e0d987626cc11317b36d6d3cc148c9a9d4b35850David Chisnall if (!CGM.getContext().getObjCImplementation( 2471cb421fa690da545b58a720abe5f1c49b166dbde7Dan Gohman const_cast<ObjCInterfaceDecl *>(ID))) 2472d901da531433254210a08e8b1f9e1ad049b340aaDavid Chisnall Offset = ComputeIvarBaseOffset(CGM, ID, Ivar); 2473d901da531433254210a08e8b1f9e1ad049b340aaDavid Chisnall 24749cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian llvm::ConstantInt *OffsetGuess = 2475243f108a7c5dc4733e9ef6b7b7c2cd0465cf2104Richard Trieu llvm::ConstantInt::get(llvm::Type::getInt32Ty(VMContext), Offset, 2476243f108a7c5dc4733e9ef6b7b7c2cd0465cf2104Richard Trieu /*isSigned*/true); 24778a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // Don't emit the guess in non-PIC code because the linker will not be able 24788a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // to replace it with the real version for a library. In non-PIC code you 24798a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall // must compile with the fragile ABI if you want to use ivars from a 24801eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // GCC-compiled class. 24818a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall if (CGM.getLangOptions().PICLevel) { 24828a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::GlobalVariable *IvarOffsetGV = new llvm::GlobalVariable(TheModule, 2483917b28b980a8300ce9c7c8d71b2a77bb93b7cdd2David Chisnall Int32Ty, false, 24848a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall llvm::GlobalValue::PrivateLinkage, OffsetGuess, Name+".guess"); 24858a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall IvarOffsetPointer = new llvm::GlobalVariable(TheModule, 24868a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall IvarOffsetGV->getType(), false, llvm::GlobalValue::LinkOnceAnyLinkage, 24878a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall IvarOffsetGV, Name); 24888a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall } else { 24898a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall IvarOffsetPointer = new llvm::GlobalVariable(TheModule, 24903c0ef8cc0dc246bd3083e8cdd63005e8873d36d2Benjamin Kramer llvm::Type::getInt32PtrTy(VMContext), false, 24913c0ef8cc0dc246bd3083e8cdd63005e8873d36d2Benjamin Kramer llvm::GlobalValue::ExternalLinkage, 0, Name); 24928a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall } 24939cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 24948a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall return IvarOffsetPointer; 24959cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian} 24969cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian 24979f6614e3c5d34998dd5a5cc6faf0746dcd611d49David ChisnallLValue CGObjCGNU::EmitObjCValueForIvar(CodeGenFunction &CGF, 2498598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian QualType ObjectTy, 2499598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian llvm::Value *BaseValue, 2500598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian const ObjCIvarDecl *Ivar, 2501598d3f61b6ca854e9d3c2f3359e24468502a61aaFariborz Jahanian unsigned CVRQualifiers) { 2502c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall const ObjCInterfaceDecl *ID = 2503c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall ObjectTy->getAs<ObjCObjectType>()->getInterface(); 25049777687562c338601c2f17906e65e1c1a0aad96fDaniel Dunbar return EmitValueForIvarAtOffset(CGF, ID, BaseValue, Ivar, CVRQualifiers, 25059777687562c338601c2f17906e65e1c1a0aad96fDaniel Dunbar EmitIvarOffset(CGF, ID, Ivar)); 25060bb20361a321593887f067515dd04cf109f4c74aFariborz Jahanian} 2507bb1c8600218b3244340331165fc7cba7bf227655Mike Stump 25089cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanianstatic const ObjCInterfaceDecl *FindIvarInterface(ASTContext &Context, 25099cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCInterfaceDecl *OID, 25109cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian const ObjCIvarDecl *OIVD) { 2511db8264e4c5ffd7af6fbad4ca4306bd382bb02691Jordy Rose for (const ObjCIvarDecl *next = OID->all_declared_ivar_begin(); next; 2512db8264e4c5ffd7af6fbad4ca4306bd382bb02691Jordy Rose next = next->getNextIvar()) { 2513db8264e4c5ffd7af6fbad4ca4306bd382bb02691Jordy Rose if (OIVD == next) 25149cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian return OID; 25159cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 25161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 25179cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian // Otherwise check in the super class. 25189cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian if (const ObjCInterfaceDecl *Super = OID->getSuperClass()) 25199cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian return FindIvarInterface(Context, Super, OIVD); 25201eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 25219cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian return 0; 25229cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian} 25230bb20361a321593887f067515dd04cf109f4c74aFariborz Jahanian 25249f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallllvm::Value *CGObjCGNU::EmitIvarOffset(CodeGenFunction &CGF, 25252a03192a02dbf4fdff438d1e658356bde871aba4Daniel Dunbar const ObjCInterfaceDecl *Interface, 2526f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian const ObjCIvarDecl *Ivar) { 25278a5a9aaddb627c0884c2ed8db55cc29fdb601195David Chisnall if (CGM.getLangOptions().ObjCNonFragileABI) { 25289cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian Interface = FindIvarInterface(CGM.getContext(), Interface, Ivar); 252963ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall if (RuntimeVersion < 10) 253063ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall return CGF.Builder.CreateZExtOrBitCast( 253163ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall CGF.Builder.CreateLoad(CGF.Builder.CreateLoad( 253263ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall ObjCIvarOffsetVariable(Interface, Ivar), false, "ivar")), 253363ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall PtrDiffTy); 253463ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall std::string name = "__objc_ivar_offset_value_" + 253563ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall Interface->getNameAsString() +"." + Ivar->getNameAsString(); 253663ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall llvm::Value *Offset = TheModule.getGlobalVariable(name); 253763ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall if (!Offset) 253863ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall Offset = new llvm::GlobalVariable(TheModule, IntTy, 25393fc81d32314eca98b51846f493a8bc77cf14a701David Chisnall false, llvm::GlobalValue::LinkOnceAnyLinkage, 25403fc81d32314eca98b51846f493a8bc77cf14a701David Chisnall llvm::Constant::getNullValue(IntTy), name); 254163ff703393543904046462aee2ac0a53b8937a3eDavid Chisnall return CGF.Builder.CreateLoad(Offset); 25429cd96ff7dfcb51fdba03df8803fff6cc36e9633fFariborz Jahanian } 25439777687562c338601c2f17906e65e1c1a0aad96fDaniel Dunbar uint64_t Offset = ComputeIvarBaseOffset(CGF.CGM, Interface, Ivar); 2544243f108a7c5dc4733e9ef6b7b7c2cd0465cf2104Richard Trieu return llvm::ConstantInt::get(PtrDiffTy, Offset, /*isSigned*/true); 2545f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian} 2546f63aa3fd429cdb9145d78f0b656bc78754efedb9Fariborz Jahanian 25479f6614e3c5d34998dd5a5cc6faf0746dcd611d49David ChisnallCGObjCRuntime * 25489f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnallclang::CodeGen::CreateGNUObjCRuntime(CodeGenModule &CGM) { 25499f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall if (CGM.getLangOptions().ObjCNonFragileABI) 25509f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall return new CGObjCGNUstep(CGM); 25519f6614e3c5d34998dd5a5cc6faf0746dcd611d49David Chisnall return new CGObjCGCC(CGM); 25520f984268b05edab2cc555a427c441baa9c252658Chris Lattner} 2553