JIT.cpp revision dc85724f703bddf6988b6b3f20203beab775f32b
14d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner//===-- JIT.cpp - LLVM Just in Time Compiler ------------------------------===// 2f976c856fcc5055f3fc7d9f070d72c2d027c1d9dMisha Brukman// 3b576c94c15af9a440f69d9d03c2afead7971118cJohn Criswell// The LLVM Compiler Infrastructure 4b576c94c15af9a440f69d9d03c2afead7971118cJohn Criswell// 54ee451de366474b9c228b4e5fa573795a715216dChris Lattner// This file is distributed under the University of Illinois Open Source 64ee451de366474b9c228b4e5fa573795a715216dChris Lattner// License. See LICENSE.TXT for details. 7f976c856fcc5055f3fc7d9f070d72c2d027c1d9dMisha Brukman// 8b576c94c15af9a440f69d9d03c2afead7971118cJohn Criswell//===----------------------------------------------------------------------===// 9bd199fb1148b9e16c4e6f3d0ee386c2505a55b71Chris Lattner// 104d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner// This tool implements a just-in-time compiler for LLVM, allowing direct 11a99be51bf5cdac1438069d4b01766c47704961c8Gabor Greif// execution of LLVM bitcode in an efficient manner. 12bd199fb1148b9e16c4e6f3d0ee386c2505a55b71Chris Lattner// 13bd199fb1148b9e16c4e6f3d0ee386c2505a55b71Chris Lattner//===----------------------------------------------------------------------===// 14bd199fb1148b9e16c4e6f3d0ee386c2505a55b71Chris Lattner 154d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner#include "JIT.h" 16cc22e9f406cf21e3a2036bf6628ee7a5c850d42cChris Lattner#include "llvm/Constants.h" 17c07ed1387503d25c0b93fcf617f69329d73fc589Chris Lattner#include "llvm/DerivedTypes.h" 184d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner#include "llvm/Function.h" 19c07ed1387503d25c0b93fcf617f69329d73fc589Chris Lattner#include "llvm/GlobalVariable.h" 20cc22e9f406cf21e3a2036bf6628ee7a5c850d42cChris Lattner#include "llvm/Instructions.h" 210f4f7d9eb72dec2a72ec596fb3d611a241893bb7Misha Brukman#include "llvm/ModuleProvider.h" 22a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes#include "llvm/CodeGen/JITCodeEmitter.h" 23b3a847db0b991d3210706a2580428fdc2b6bf037Argyrios Kyrtzidis#include "llvm/CodeGen/MachineCodeInfo.h" 24df5a7daff9c7664bff8b713e8ed5155319bc6041Jeffrey Yasskin#include "llvm/ExecutionEngine/GenericValue.h" 25df5a7daff9c7664bff8b713e8ed5155319bc6041Jeffrey Yasskin#include "llvm/ExecutionEngine/JITEventListener.h" 2607000c6f01d8f57170f2d4c77a86d934bdc5c696Owen Anderson#include "llvm/Target/TargetData.h" 27bd199fb1148b9e16c4e6f3d0ee386c2505a55b71Chris Lattner#include "llvm/Target/TargetMachine.h" 284d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner#include "llvm/Target/TargetJITInfo.h" 2944e3dd1672572df28e79649c86f2d44bf3730062Chris Lattner#include "llvm/Support/Dwarf.h" 3031e2466f159a887fed9139067a676f65adf2a8c3Torok Edwin#include "llvm/Support/ErrorHandling.h" 3144e3dd1672572df28e79649c86f2d44bf3730062Chris Lattner#include "llvm/Support/MutexGuard.h" 3244e3dd1672572df28e79649c86f2d44bf3730062Chris Lattner#include "llvm/System/DynamicLibrary.h" 333b30a6e92d1da79674451879d4112a8f83cc12a4Anton Korobeynikov#include "llvm/Config/config.h" 343b30a6e92d1da79674451879d4112a8f83cc12a4Anton Korobeynikov 35c19aadee66b744311afe6e420847e80822a765f2Chris Lattnerusing namespace llvm; 36abb027cf412944db4d27579ba3ae00717d23c25eMisha Brukman 37b76ea74845849e7a499603bb04bfe1614101e910Nate Begeman#ifdef __APPLE__ 383b30a6e92d1da79674451879d4112a8f83cc12a4Anton Korobeynikov// Apple gcc defaults to -fuse-cxa-atexit (i.e. calls __cxa_atexit instead 393b30a6e92d1da79674451879d4112a8f83cc12a4Anton Korobeynikov// of atexit). It passes the address of linker generated symbol __dso_handle 403b30a6e92d1da79674451879d4112a8f83cc12a4Anton Korobeynikov// to the function. 413b30a6e92d1da79674451879d4112a8f83cc12a4Anton Korobeynikov// This configuration change happened at version 5330. 423b30a6e92d1da79674451879d4112a8f83cc12a4Anton Korobeynikov# include <AvailabilityMacros.h> 433b30a6e92d1da79674451879d4112a8f83cc12a4Anton Korobeynikov# if defined(MAC_OS_X_VERSION_10_4) && \ 443b30a6e92d1da79674451879d4112a8f83cc12a4Anton Korobeynikov ((MAC_OS_X_VERSION_MIN_REQUIRED > MAC_OS_X_VERSION_10_4) || \ 453b30a6e92d1da79674451879d4112a8f83cc12a4Anton Korobeynikov (MAC_OS_X_VERSION_MIN_REQUIRED == MAC_OS_X_VERSION_10_4 && \ 463b30a6e92d1da79674451879d4112a8f83cc12a4Anton Korobeynikov __APPLE_CC__ >= 5330)) 473b30a6e92d1da79674451879d4112a8f83cc12a4Anton Korobeynikov# ifndef HAVE___DSO_HANDLE 483b30a6e92d1da79674451879d4112a8f83cc12a4Anton Korobeynikov# define HAVE___DSO_HANDLE 1 493b30a6e92d1da79674451879d4112a8f83cc12a4Anton Korobeynikov# endif 503b30a6e92d1da79674451879d4112a8f83cc12a4Anton Korobeynikov# endif 515f42c550305814f916207b9604b92fbd258e8eafEvan Cheng#endif 523b30a6e92d1da79674451879d4112a8f83cc12a4Anton Korobeynikov 533b30a6e92d1da79674451879d4112a8f83cc12a4Anton Korobeynikov#if HAVE___DSO_HANDLE 543b30a6e92d1da79674451879d4112a8f83cc12a4Anton Korobeynikovextern void *__dso_handle __attribute__ ((__visibility__ ("hidden"))); 55b76ea74845849e7a499603bb04bfe1614101e910Nate Begeman#endif 565f42c550305814f916207b9604b92fbd258e8eafEvan Cheng 57844731a7f1909f55935e3514c9e713a62d67662eDan Gohmannamespace { 58844731a7f1909f55935e3514c9e713a62d67662eDan Gohman 592fe4bb06c6c40d16b7a5ae9cdf6bb6fe94d51be0Chris Lattnerstatic struct RegisterJIT { 602fe4bb06c6c40d16b7a5ae9cdf6bb6fe94d51be0Chris Lattner RegisterJIT() { JIT::Register(); } 612fe4bb06c6c40d16b7a5ae9cdf6bb6fe94d51be0Chris Lattner} JITRegistrator; 622fe4bb06c6c40d16b7a5ae9cdf6bb6fe94d51be0Chris Lattner 63844731a7f1909f55935e3514c9e713a62d67662eDan Gohman} 64844731a7f1909f55935e3514c9e713a62d67662eDan Gohman 65e46161f10c3e0c640b22e446b873df8b01413f52Bob Wilsonextern "C" void LLVMLinkInJIT() { 662f51914d828b462b054195e73c75448f24e01979Jeff Cohen} 672f51914d828b462b054195e73c75448f24e01979Jeff Cohen 68d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray 692d5424d76add9714d95239f183f7f88263f44360Evan Cheng#if defined(__GNUC__) && !defined(__ARM__EABI__) 70d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray 71d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray// libgcc defines the __register_frame function to dynamically register new 72d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray// dwarf frames for exception handling. This functionality is not portable 73d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray// across compilers and is only provided by GCC. We use the __register_frame 74d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray// function here so that code generated by the JIT cooperates with the unwinding 75d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray// runtime of libgcc. When JITting with exception handling enable, LLVM 76d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray// generates dwarf frames and registers it to libgcc with __register_frame. 77d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray// 78d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray// The __register_frame function works with Linux. 79d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray// 80d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray// Unfortunately, this functionality seems to be in libgcc after the unwinding 81d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray// library of libgcc for darwin was written. The code for darwin overwrites the 82d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray// value updated by __register_frame with a value fetched with "keymgr". 83d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray// "keymgr" is an obsolete functionality, which should be rewritten some day. 84d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray// In the meantime, since "keymgr" is on all libgccs shipped with apple-gcc, we 85d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray// need a workaround in LLVM which uses the "keymgr" to dynamically modify the 86d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray// values of an opaque key, used by libgcc to find dwarf tables. 87d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray 88299d9d74e9b010c499557380fb6467f5361e141aAnton Korobeynikovextern "C" void __register_frame(void*); 89d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray 9000f16283cf12c53c2626d21fb534f9422500f0f1Evan Cheng#if defined(__APPLE__) && MAC_OS_X_VERSION_MAX_ALLOWED <= 1050 9100f16283cf12c53c2626d21fb534f9422500f0f1Evan Cheng# define USE_KEYMGR 1 9200f16283cf12c53c2626d21fb534f9422500f0f1Evan Cheng#else 9300f16283cf12c53c2626d21fb534f9422500f0f1Evan Cheng# define USE_KEYMGR 0 9400f16283cf12c53c2626d21fb534f9422500f0f1Evan Cheng#endif 9500f16283cf12c53c2626d21fb534f9422500f0f1Evan Cheng 9600f16283cf12c53c2626d21fb534f9422500f0f1Evan Cheng#if USE_KEYMGR 97d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray 98d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffraynamespace { 99d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray 100d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray// LibgccObject - This is the structure defined in libgcc. There is no #include 101d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray// provided for this structure, so we also define it here. libgcc calls it 102d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray// "struct object". The structure is undocumented in libgcc. 103d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffraystruct LibgccObject { 104d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray void *unused1; 105d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray void *unused2; 106d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray void *unused3; 107d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray 108d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray /// frame - Pointer to the exception table. 109d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray void *frame; 110d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray 111d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray /// encoding - The encoding of the object? 112d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray union { 113d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray struct { 114d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray unsigned long sorted : 1; 115d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray unsigned long from_array : 1; 116d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray unsigned long mixed_encoding : 1; 117d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray unsigned long encoding : 8; 118d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray unsigned long count : 21; 119d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray } b; 120d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray size_t i; 121d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray } encoding; 122d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray 123d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray /// fde_end - libgcc defines this field only if some macro is defined. We 124d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray /// include this field even if it may not there, to make libgcc happy. 125d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray char *fde_end; 126d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray 127d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray /// next - At least we know it's a chained list! 128d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray struct LibgccObject *next; 129d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray}; 130d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray 131d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray// "kemgr" stuff. Apparently, all frame tables are stored there. 132d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffrayextern "C" void _keymgr_set_and_unlock_processwide_ptr(int, void *); 133d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffrayextern "C" void *_keymgr_get_and_lock_processwide_ptr(int); 134d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray#define KEYMGR_GCC3_DW2_OBJ_LIST 302 /* Dwarf2 object list */ 135d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray 136d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray/// LibgccObjectInfo - libgcc defines this struct as km_object_info. It 137d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray/// probably contains all dwarf tables that are loaded. 138d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffraystruct LibgccObjectInfo { 139d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray 140d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray /// seenObjects - LibgccObjects already parsed by the unwinding runtime. 141d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray /// 142d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray struct LibgccObject* seenObjects; 143d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray 144d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray /// unseenObjects - LibgccObjects not parsed yet by the unwinding runtime. 145d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray /// 146d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray struct LibgccObject* unseenObjects; 147d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray 148d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray unsigned unused[2]; 149d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray}; 150d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray 151d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray/// darwin_register_frame - Since __register_frame does not work with darwin's 152d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray/// libgcc,we provide our own function, which "tricks" libgcc by modifying the 153d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray/// "Dwarf2 object list" key. 154d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffrayvoid DarwinRegisterFrame(void* FrameBegin) { 155d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray // Get the key. 15644e3dd1672572df28e79649c86f2d44bf3730062Chris Lattner LibgccObjectInfo* LOI = (struct LibgccObjectInfo*) 157d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray _keymgr_get_and_lock_processwide_ptr(KEYMGR_GCC3_DW2_OBJ_LIST); 15844e3dd1672572df28e79649c86f2d44bf3730062Chris Lattner assert(LOI && "This should be preallocated by the runtime"); 159d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray 160d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray // Allocate a new LibgccObject to represent this frame. Deallocation of this 161d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray // object may be impossible: since darwin code in libgcc was written after 162d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray // the ability to dynamically register frames, things may crash if we 163d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray // deallocate it. 164d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray struct LibgccObject* ob = (struct LibgccObject*) 165d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray malloc(sizeof(struct LibgccObject)); 166d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray 167d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray // Do like libgcc for the values of the field. 168d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray ob->unused1 = (void *)-1; 169d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray ob->unused2 = 0; 170d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray ob->unused3 = 0; 171d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray ob->frame = FrameBegin; 172d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray ob->encoding.i = 0; 173d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray ob->encoding.b.encoding = llvm::dwarf::DW_EH_PE_omit; 174d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray 175d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray // Put the info on both places, as libgcc uses the first or the the second 176d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray // field. Note that we rely on having two pointers here. If fde_end was a 177d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray // char, things would get complicated. 178d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray ob->fde_end = (char*)LOI->unseenObjects; 179d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray ob->next = LOI->unseenObjects; 180d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray 181d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray // Update the key's unseenObjects list. 182d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray LOI->unseenObjects = ob; 183d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray 184d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray // Finally update the "key". Apparently, libgcc requires it. 185d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray _keymgr_set_and_unlock_processwide_ptr(KEYMGR_GCC3_DW2_OBJ_LIST, 186d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray LOI); 187d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray 188d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray} 189d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray 190d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray} 191d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray#endif // __APPLE__ 192d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray#endif // __GNUC__ 193299d9d74e9b010c499557380fb6467f5361e141aAnton Korobeynikov 19434c9433004cabd4760987dce4804a91c84908219Chris Lattner/// createJIT - This is the factory method for creating a JIT for the current 19534c9433004cabd4760987dce4804a91c84908219Chris Lattner/// machine, it does not fall back to the interpreter. This takes ownership 19634c9433004cabd4760987dce4804a91c84908219Chris Lattner/// of the module provider. 19734c9433004cabd4760987dce4804a91c84908219Chris LattnerExecutionEngine *ExecutionEngine::createJIT(ModuleProvider *MP, 19834c9433004cabd4760987dce4804a91c84908219Chris Lattner std::string *ErrorStr, 199502f20b17ede40de84503010b7699b328a4f2867Evan Cheng JITMemoryManager *JMM, 200489393d7b92107cc3de17d8dbe7dd11ab7395fdcJeffrey Yasskin CodeGenOpt::Level OptLevel, 201489393d7b92107cc3de17d8dbe7dd11ab7395fdcJeffrey Yasskin bool GVsWithCode) { 2024b1511b027ce0b648b3379f2891816c25b46f515Reid Kleckner return JIT::createJIT(MP, ErrorStr, JMM, OptLevel, GVsWithCode); 2034b1511b027ce0b648b3379f2891816c25b46f515Reid Kleckner} 2044b1511b027ce0b648b3379f2891816c25b46f515Reid Kleckner 2054b1511b027ce0b648b3379f2891816c25b46f515Reid KlecknerExecutionEngine *JIT::createJIT(ModuleProvider *MP, 2064b1511b027ce0b648b3379f2891816c25b46f515Reid Kleckner std::string *ErrorStr, 2074b1511b027ce0b648b3379f2891816c25b46f515Reid Kleckner JITMemoryManager *JMM, 2084b1511b027ce0b648b3379f2891816c25b46f515Reid Kleckner CodeGenOpt::Level OptLevel, 2094b1511b027ce0b648b3379f2891816c25b46f515Reid Kleckner bool GVsWithCode) { 21034c9433004cabd4760987dce4804a91c84908219Chris Lattner // Make sure we can resolve symbols in the program as well. The zero arg 21134c9433004cabd4760987dce4804a91c84908219Chris Lattner // to the function tells DynamicLibrary to load the program, not a library. 2124b1511b027ce0b648b3379f2891816c25b46f515Reid Kleckner if (sys::DynamicLibrary::LoadLibraryPermanently(0, ErrorStr)) 2134b1511b027ce0b648b3379f2891816c25b46f515Reid Kleckner return 0; 2144b1511b027ce0b648b3379f2891816c25b46f515Reid Kleckner 2154b1511b027ce0b648b3379f2891816c25b46f515Reid Kleckner // Pick a target either via -march or by guessing the native arch. 2164b1511b027ce0b648b3379f2891816c25b46f515Reid Kleckner TargetMachine *TM = JIT::selectTarget(MP, ErrorStr); 2174b1511b027ce0b648b3379f2891816c25b46f515Reid Kleckner if (!TM || (ErrorStr && ErrorStr->length() > 0)) return 0; 2184b1511b027ce0b648b3379f2891816c25b46f515Reid Kleckner 2194b1511b027ce0b648b3379f2891816c25b46f515Reid Kleckner // If the target supports JIT code generation, create a the JIT. 2204b1511b027ce0b648b3379f2891816c25b46f515Reid Kleckner if (TargetJITInfo *TJ = TM->getJITInfo()) { 2214b1511b027ce0b648b3379f2891816c25b46f515Reid Kleckner return new JIT(MP, *TM, *TJ, JMM, OptLevel, GVsWithCode); 2224b1511b027ce0b648b3379f2891816c25b46f515Reid Kleckner } else { 2234b1511b027ce0b648b3379f2891816c25b46f515Reid Kleckner if (ErrorStr) 2244b1511b027ce0b648b3379f2891816c25b46f515Reid Kleckner *ErrorStr = "target does not support JIT code generation"; 2254b1511b027ce0b648b3379f2891816c25b46f515Reid Kleckner return 0; 2264b1511b027ce0b648b3379f2891816c25b46f515Reid Kleckner } 22734c9433004cabd4760987dce4804a91c84908219Chris Lattner} 22834c9433004cabd4760987dce4804a91c84908219Chris Lattner 22934c9433004cabd4760987dce4804a91c84908219Chris LattnerJIT::JIT(ModuleProvider *MP, TargetMachine &tm, TargetJITInfo &tji, 230489393d7b92107cc3de17d8dbe7dd11ab7395fdcJeffrey Yasskin JITMemoryManager *JMM, CodeGenOpt::Level OptLevel, bool GVsWithCode) 231489393d7b92107cc3de17d8dbe7dd11ab7395fdcJeffrey Yasskin : ExecutionEngine(MP), TM(tm), TJI(tji), AllocateGVsWithCode(GVsWithCode) { 232bd199fb1148b9e16c4e6f3d0ee386c2505a55b71Chris Lattner setTargetData(TM.getTargetData()); 233abb027cf412944db4d27579ba3ae00717d23c25eMisha Brukman 234f049e07eb8930214941c72f8e4409df394de1567Nate Begeman jitstate = new JITState(MP); 235f049e07eb8930214941c72f8e4409df394de1567Nate Begeman 236a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes // Initialize JCE 2372763217fbd2f1c54a7a25fd3ae9e997ea6ece0cbReid Kleckner JCE = createEmitter(*this, JMM, TM); 238f976c856fcc5055f3fc7d9f070d72c2d027c1d9dMisha Brukman 23950872d5385463cf1d2e23a758516e7f818e1af24Brian Gaeke // Add target data 240ee448630bdf7eb6037fe2c50518d32010c433ca3Reid Spencer MutexGuard locked(lock); 241f049e07eb8930214941c72f8e4409df394de1567Nate Begeman FunctionPassManager &PM = jitstate->getPM(locked); 242b93b0347d8715e9f2ded1dc56a086f92aeedfb86Chris Lattner PM.add(new TargetData(*TM.getTargetData())); 24350872d5385463cf1d2e23a758516e7f818e1af24Brian Gaeke 2444d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner // Turn the machine code intermediate representation into bytes in memory that 2454d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner // may be executed. 246a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes if (TM.addPassesToEmitMachineCode(PM, *JCE, OptLevel)) { 2477d696d80409aad20bb5da0fc4eccab941dd371d4Torok Edwin llvm_report_error("Target does not support machine code emission!"); 2484d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner } 2491911fd4f85aebcd4d7b8f27313c5a363eebf49cbChris Lattner 250a7ec87cd0793c463d792323087b2fb3a4871efe0Nicolas Geoffray // Register routine for informing unwinding runtime about new EH frames 2512d5424d76add9714d95239f183f7f88263f44360Evan Cheng#if defined(__GNUC__) && !defined(__ARM_EABI__) 25200f16283cf12c53c2626d21fb534f9422500f0f1Evan Cheng#if USE_KEYMGR 253d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray struct LibgccObjectInfo* LOI = (struct LibgccObjectInfo*) 254d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray _keymgr_get_and_lock_processwide_ptr(KEYMGR_GCC3_DW2_OBJ_LIST); 255d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray 256d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray // The key is created on demand, and libgcc creates it the first time an 257d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray // exception occurs. Since we need the key to register frames, we create 258d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray // it now. 2593f91bb3ce4c8f6e31c4051cc10799e54c3a26a3aChris Lattner if (!LOI) 2603f91bb3ce4c8f6e31c4051cc10799e54c3a26a3aChris Lattner LOI = (LibgccObjectInfo*)calloc(sizeof(struct LibgccObjectInfo), 1); 2613f91bb3ce4c8f6e31c4051cc10799e54c3a26a3aChris Lattner _keymgr_set_and_unlock_processwide_ptr(KEYMGR_GCC3_DW2_OBJ_LIST, LOI); 262d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray InstallExceptionTableRegister(DarwinRegisterFrame); 263d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray#else 264a7ec87cd0793c463d792323087b2fb3a4871efe0Nicolas Geoffray InstallExceptionTableRegister(__register_frame); 265d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray#endif // __APPLE__ 266d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray#endif // __GNUC__ 267a7ec87cd0793c463d792323087b2fb3a4871efe0Nicolas Geoffray 2681911fd4f85aebcd4d7b8f27313c5a363eebf49cbChris Lattner // Initialize passes. 2691911fd4f85aebcd4d7b8f27313c5a363eebf49cbChris Lattner PM.doInitialization(); 270bd199fb1148b9e16c4e6f3d0ee386c2505a55b71Chris Lattner} 271bd199fb1148b9e16c4e6f3d0ee386c2505a55b71Chris Lattner 2724d326fa9bea5b80147edf14d1521fc41ce315275Chris LattnerJIT::~JIT() { 273f049e07eb8930214941c72f8e4409df394de1567Nate Begeman delete jitstate; 274a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes delete JCE; 2754d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner delete &TM; 2764d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner} 2774d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner 278f049e07eb8930214941c72f8e4409df394de1567Nate Begeman/// addModuleProvider - Add a new ModuleProvider to the JIT. If we previously 279f049e07eb8930214941c72f8e4409df394de1567Nate Begeman/// removed the last ModuleProvider, we need re-initialize jitstate with a valid 280f049e07eb8930214941c72f8e4409df394de1567Nate Begeman/// ModuleProvider. 281f049e07eb8930214941c72f8e4409df394de1567Nate Begemanvoid JIT::addModuleProvider(ModuleProvider *MP) { 282f049e07eb8930214941c72f8e4409df394de1567Nate Begeman MutexGuard locked(lock); 283f049e07eb8930214941c72f8e4409df394de1567Nate Begeman 284f049e07eb8930214941c72f8e4409df394de1567Nate Begeman if (Modules.empty()) { 285f049e07eb8930214941c72f8e4409df394de1567Nate Begeman assert(!jitstate && "jitstate should be NULL if Modules vector is empty!"); 286f049e07eb8930214941c72f8e4409df394de1567Nate Begeman 287f049e07eb8930214941c72f8e4409df394de1567Nate Begeman jitstate = new JITState(MP); 288f049e07eb8930214941c72f8e4409df394de1567Nate Begeman 289f049e07eb8930214941c72f8e4409df394de1567Nate Begeman FunctionPassManager &PM = jitstate->getPM(locked); 290f049e07eb8930214941c72f8e4409df394de1567Nate Begeman PM.add(new TargetData(*TM.getTargetData())); 291f049e07eb8930214941c72f8e4409df394de1567Nate Begeman 292f049e07eb8930214941c72f8e4409df394de1567Nate Begeman // Turn the machine code intermediate representation into bytes in memory 293f049e07eb8930214941c72f8e4409df394de1567Nate Begeman // that may be executed. 294a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes if (TM.addPassesToEmitMachineCode(PM, *JCE, CodeGenOpt::Default)) { 2957d696d80409aad20bb5da0fc4eccab941dd371d4Torok Edwin llvm_report_error("Target does not support machine code emission!"); 296f049e07eb8930214941c72f8e4409df394de1567Nate Begeman } 297f049e07eb8930214941c72f8e4409df394de1567Nate Begeman 298f049e07eb8930214941c72f8e4409df394de1567Nate Begeman // Initialize passes. 299f049e07eb8930214941c72f8e4409df394de1567Nate Begeman PM.doInitialization(); 300f049e07eb8930214941c72f8e4409df394de1567Nate Begeman } 301f049e07eb8930214941c72f8e4409df394de1567Nate Begeman 302f049e07eb8930214941c72f8e4409df394de1567Nate Begeman ExecutionEngine::addModuleProvider(MP); 303f049e07eb8930214941c72f8e4409df394de1567Nate Begeman} 304f049e07eb8930214941c72f8e4409df394de1567Nate Begeman 305f049e07eb8930214941c72f8e4409df394de1567Nate Begeman/// removeModuleProvider - If we are removing the last ModuleProvider, 306f049e07eb8930214941c72f8e4409df394de1567Nate Begeman/// invalidate the jitstate since the PassManager it contains references a 307f049e07eb8930214941c72f8e4409df394de1567Nate Begeman/// released ModuleProvider. 308f049e07eb8930214941c72f8e4409df394de1567Nate BegemanModule *JIT::removeModuleProvider(ModuleProvider *MP, std::string *E) { 309f049e07eb8930214941c72f8e4409df394de1567Nate Begeman Module *result = ExecutionEngine::removeModuleProvider(MP, E); 310f049e07eb8930214941c72f8e4409df394de1567Nate Begeman 311f049e07eb8930214941c72f8e4409df394de1567Nate Begeman MutexGuard locked(lock); 312d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman 313d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman if (jitstate->getMP() == MP) { 314f049e07eb8930214941c72f8e4409df394de1567Nate Begeman delete jitstate; 315f049e07eb8930214941c72f8e4409df394de1567Nate Begeman jitstate = 0; 316f049e07eb8930214941c72f8e4409df394de1567Nate Begeman } 317f049e07eb8930214941c72f8e4409df394de1567Nate Begeman 318d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman if (!jitstate && !Modules.empty()) { 319d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman jitstate = new JITState(Modules[0]); 320d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman 321d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman FunctionPassManager &PM = jitstate->getPM(locked); 322d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman PM.add(new TargetData(*TM.getTargetData())); 323d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman 324d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman // Turn the machine code intermediate representation into bytes in memory 325d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman // that may be executed. 326a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes if (TM.addPassesToEmitMachineCode(PM, *JCE, CodeGenOpt::Default)) { 3277d696d80409aad20bb5da0fc4eccab941dd371d4Torok Edwin llvm_report_error("Target does not support machine code emission!"); 328d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman } 329d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman 330d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman // Initialize passes. 331d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman PM.doInitialization(); 332d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman } 333f049e07eb8930214941c72f8e4409df394de1567Nate Begeman return result; 334f049e07eb8930214941c72f8e4409df394de1567Nate Begeman} 335f049e07eb8930214941c72f8e4409df394de1567Nate Begeman 33660789e419e04c260e36af9a1add5ad316313e490Nate Begeman/// deleteModuleProvider - Remove a ModuleProvider from the list of modules, 33760789e419e04c260e36af9a1add5ad316313e490Nate Begeman/// and deletes the ModuleProvider and owned Module. Avoids materializing 33860789e419e04c260e36af9a1add5ad316313e490Nate Begeman/// the underlying module. 33960789e419e04c260e36af9a1add5ad316313e490Nate Begemanvoid JIT::deleteModuleProvider(ModuleProvider *MP, std::string *E) { 34060789e419e04c260e36af9a1add5ad316313e490Nate Begeman ExecutionEngine::deleteModuleProvider(MP, E); 34160789e419e04c260e36af9a1add5ad316313e490Nate Begeman 34260789e419e04c260e36af9a1add5ad316313e490Nate Begeman MutexGuard locked(lock); 343d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman 344d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman if (jitstate->getMP() == MP) { 34560789e419e04c260e36af9a1add5ad316313e490Nate Begeman delete jitstate; 34660789e419e04c260e36af9a1add5ad316313e490Nate Begeman jitstate = 0; 34760789e419e04c260e36af9a1add5ad316313e490Nate Begeman } 348d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman 349d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman if (!jitstate && !Modules.empty()) { 350d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman jitstate = new JITState(Modules[0]); 351d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman 352d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman FunctionPassManager &PM = jitstate->getPM(locked); 353d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman PM.add(new TargetData(*TM.getTargetData())); 354d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman 355d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman // Turn the machine code intermediate representation into bytes in memory 356d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman // that may be executed. 357a3f99f90338d89354384ca25f53ca4450a1a9d18Bruno Cardoso Lopes if (TM.addPassesToEmitMachineCode(PM, *JCE, CodeGenOpt::Default)) { 3587d696d80409aad20bb5da0fc4eccab941dd371d4Torok Edwin llvm_report_error("Target does not support machine code emission!"); 359d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman } 360d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman 361d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman // Initialize passes. 362d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman PM.doInitialization(); 363d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman } 36460789e419e04c260e36af9a1add5ad316313e490Nate Begeman} 36560789e419e04c260e36af9a1add5ad316313e490Nate Begeman 36670975eef572b9e132bbaade16ba9edb76f15f287Brian Gaeke/// run - Start execution with the specified function and arguments. 36705a1a306bcfba2b533dc1210d24924e5f3e9ed0eChris Lattner/// 368ff0f1bb32a439cf82cb09ee29544c894a2bfe877Chris LattnerGenericValue JIT::runFunction(Function *F, 369ff0f1bb32a439cf82cb09ee29544c894a2bfe877Chris Lattner const std::vector<GenericValue> &ArgValues) { 370b47130c580385a5a2c922c480a85438b2bb80293Chris Lattner assert(F && "Function *F was null at entry to run()"); 371b47130c580385a5a2c922c480a85438b2bb80293Chris Lattner 372b47130c580385a5a2c922c480a85438b2bb80293Chris Lattner void *FPtr = getPointerToFunction(F); 3737c45d7898bdfdc29a61a58b678e13ed41333ed51Chris Lattner assert(FPtr && "Pointer to fn's code was null after getPointerToFunction"); 374f7bedf447e080cb57c64d6f0cbf6fbeb9f4c596eChris Lattner const FunctionType *FTy = F->getFunctionType(); 375e5eab142a51373dd3bee758ea958575afbfce259Chris Lattner const Type *RetTy = FTy->getReturnType(); 376bd199fb1148b9e16c4e6f3d0ee386c2505a55b71Chris Lattner 37707ab52b6459f65b3e1c94d52321165688a6096aaDan Gohman assert((FTy->getNumParams() == ArgValues.size() || 37807ab52b6459f65b3e1c94d52321165688a6096aaDan Gohman (FTy->isVarArg() && FTy->getNumParams() <= ArgValues.size())) && 37907ab52b6459f65b3e1c94d52321165688a6096aaDan Gohman "Wrong number of arguments passed into function!"); 380e5eab142a51373dd3bee758ea958575afbfce259Chris Lattner assert(FTy->getNumParams() == ArgValues.size() && 381e5eab142a51373dd3bee758ea958575afbfce259Chris Lattner "This doesn't support passing arguments through varargs (yet)!"); 382e5eab142a51373dd3bee758ea958575afbfce259Chris Lattner 383ec8430270a9f1adbf9b790319a1d4781658359fdMisha Brukman // Handle some common cases first. These cases correspond to common `main' 384e5eab142a51373dd3bee758ea958575afbfce259Chris Lattner // prototypes. 3851d0be15f89cb5056e20e2d24faa8d6afb1573bcaOwen Anderson if (RetTy == Type::getInt32Ty(F->getContext()) || 3861d0be15f89cb5056e20e2d24faa8d6afb1573bcaOwen Anderson RetTy == Type::getVoidTy(F->getContext())) { 387f7bedf447e080cb57c64d6f0cbf6fbeb9f4c596eChris Lattner switch (ArgValues.size()) { 388f7bedf447e080cb57c64d6f0cbf6fbeb9f4c596eChris Lattner case 3: 3891d0be15f89cb5056e20e2d24faa8d6afb1573bcaOwen Anderson if (FTy->getParamType(0) == Type::getInt32Ty(F->getContext()) && 390f7bedf447e080cb57c64d6f0cbf6fbeb9f4c596eChris Lattner isa<PointerType>(FTy->getParamType(1)) && 391f7bedf447e080cb57c64d6f0cbf6fbeb9f4c596eChris Lattner isa<PointerType>(FTy->getParamType(2))) { 392f7bedf447e080cb57c64d6f0cbf6fbeb9f4c596eChris Lattner int (*PF)(int, char **, const char **) = 393870286aa33290c00e55ba479a60251c79f3a7911Chris Lattner (int(*)(int, char **, const char **))(intptr_t)FPtr; 394ec8430270a9f1adbf9b790319a1d4781658359fdMisha Brukman 395f7bedf447e080cb57c64d6f0cbf6fbeb9f4c596eChris Lattner // Call the function. 396e5eab142a51373dd3bee758ea958575afbfce259Chris Lattner GenericValue rv; 39738f6a15df69c271c3bebf648642041b31380e31aReid Spencer rv.IntVal = APInt(32, PF(ArgValues[0].IntVal.getZExtValue(), 39838f6a15df69c271c3bebf648642041b31380e31aReid Spencer (char **)GVTOP(ArgValues[1]), 39938f6a15df69c271c3bebf648642041b31380e31aReid Spencer (const char **)GVTOP(ArgValues[2]))); 400f7bedf447e080cb57c64d6f0cbf6fbeb9f4c596eChris Lattner return rv; 401f7bedf447e080cb57c64d6f0cbf6fbeb9f4c596eChris Lattner } 402f7bedf447e080cb57c64d6f0cbf6fbeb9f4c596eChris Lattner break; 403174f2264649d9ae062bdb0a038131c2836596be5Chris Lattner case 2: 4041d0be15f89cb5056e20e2d24faa8d6afb1573bcaOwen Anderson if (FTy->getParamType(0) == Type::getInt32Ty(F->getContext()) && 405174f2264649d9ae062bdb0a038131c2836596be5Chris Lattner isa<PointerType>(FTy->getParamType(1))) { 406870286aa33290c00e55ba479a60251c79f3a7911Chris Lattner int (*PF)(int, char **) = (int(*)(int, char **))(intptr_t)FPtr; 407ec8430270a9f1adbf9b790319a1d4781658359fdMisha Brukman 408174f2264649d9ae062bdb0a038131c2836596be5Chris Lattner // Call the function. 409174f2264649d9ae062bdb0a038131c2836596be5Chris Lattner GenericValue rv; 41038f6a15df69c271c3bebf648642041b31380e31aReid Spencer rv.IntVal = APInt(32, PF(ArgValues[0].IntVal.getZExtValue(), 41138f6a15df69c271c3bebf648642041b31380e31aReid Spencer (char **)GVTOP(ArgValues[1]))); 412174f2264649d9ae062bdb0a038131c2836596be5Chris Lattner return rv; 413174f2264649d9ae062bdb0a038131c2836596be5Chris Lattner } 414174f2264649d9ae062bdb0a038131c2836596be5Chris Lattner break; 415f7bedf447e080cb57c64d6f0cbf6fbeb9f4c596eChris Lattner case 1: 416f7bedf447e080cb57c64d6f0cbf6fbeb9f4c596eChris Lattner if (FTy->getNumParams() == 1 && 4171d0be15f89cb5056e20e2d24faa8d6afb1573bcaOwen Anderson FTy->getParamType(0) == Type::getInt32Ty(F->getContext())) { 418e5eab142a51373dd3bee758ea958575afbfce259Chris Lattner GenericValue rv; 419870286aa33290c00e55ba479a60251c79f3a7911Chris Lattner int (*PF)(int) = (int(*)(int))(intptr_t)FPtr; 42038f6a15df69c271c3bebf648642041b31380e31aReid Spencer rv.IntVal = APInt(32, PF(ArgValues[0].IntVal.getZExtValue())); 421f7bedf447e080cb57c64d6f0cbf6fbeb9f4c596eChris Lattner return rv; 422f7bedf447e080cb57c64d6f0cbf6fbeb9f4c596eChris Lattner } 423f7bedf447e080cb57c64d6f0cbf6fbeb9f4c596eChris Lattner break; 424e5eab142a51373dd3bee758ea958575afbfce259Chris Lattner } 425e5eab142a51373dd3bee758ea958575afbfce259Chris Lattner } 426e5eab142a51373dd3bee758ea958575afbfce259Chris Lattner 427e5eab142a51373dd3bee758ea958575afbfce259Chris Lattner // Handle cases where no arguments are passed first. 428e5eab142a51373dd3bee758ea958575afbfce259Chris Lattner if (ArgValues.empty()) { 429e5eab142a51373dd3bee758ea958575afbfce259Chris Lattner GenericValue rv; 430e5eab142a51373dd3bee758ea958575afbfce259Chris Lattner switch (RetTy->getTypeID()) { 431c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("Unknown return type for function call!"); 432a54b7cbd452b3adb2f51346140d996b29c2cdb30Reid Spencer case Type::IntegerTyID: { 433a54b7cbd452b3adb2f51346140d996b29c2cdb30Reid Spencer unsigned BitWidth = cast<IntegerType>(RetTy)->getBitWidth(); 434a54b7cbd452b3adb2f51346140d996b29c2cdb30Reid Spencer if (BitWidth == 1) 43538f6a15df69c271c3bebf648642041b31380e31aReid Spencer rv.IntVal = APInt(BitWidth, ((bool(*)())(intptr_t)FPtr)()); 436a54b7cbd452b3adb2f51346140d996b29c2cdb30Reid Spencer else if (BitWidth <= 8) 43738f6a15df69c271c3bebf648642041b31380e31aReid Spencer rv.IntVal = APInt(BitWidth, ((char(*)())(intptr_t)FPtr)()); 438a54b7cbd452b3adb2f51346140d996b29c2cdb30Reid Spencer else if (BitWidth <= 16) 43938f6a15df69c271c3bebf648642041b31380e31aReid Spencer rv.IntVal = APInt(BitWidth, ((short(*)())(intptr_t)FPtr)()); 440a54b7cbd452b3adb2f51346140d996b29c2cdb30Reid Spencer else if (BitWidth <= 32) 44138f6a15df69c271c3bebf648642041b31380e31aReid Spencer rv.IntVal = APInt(BitWidth, ((int(*)())(intptr_t)FPtr)()); 442a54b7cbd452b3adb2f51346140d996b29c2cdb30Reid Spencer else if (BitWidth <= 64) 44338f6a15df69c271c3bebf648642041b31380e31aReid Spencer rv.IntVal = APInt(BitWidth, ((int64_t(*)())(intptr_t)FPtr)()); 444a54b7cbd452b3adb2f51346140d996b29c2cdb30Reid Spencer else 445c23197a26f34f559ea9797de51e187087c039c42Torok Edwin llvm_unreachable("Integer types > 64 bits not supported"); 446e5eab142a51373dd3bee758ea958575afbfce259Chris Lattner return rv; 447a54b7cbd452b3adb2f51346140d996b29c2cdb30Reid Spencer } 448e5eab142a51373dd3bee758ea958575afbfce259Chris Lattner case Type::VoidTyID: 44938f6a15df69c271c3bebf648642041b31380e31aReid Spencer rv.IntVal = APInt(32, ((int(*)())(intptr_t)FPtr)()); 450e5eab142a51373dd3bee758ea958575afbfce259Chris Lattner return rv; 451e5eab142a51373dd3bee758ea958575afbfce259Chris Lattner case Type::FloatTyID: 452870286aa33290c00e55ba479a60251c79f3a7911Chris Lattner rv.FloatVal = ((float(*)())(intptr_t)FPtr)(); 453e5eab142a51373dd3bee758ea958575afbfce259Chris Lattner return rv; 454e5eab142a51373dd3bee758ea958575afbfce259Chris Lattner case Type::DoubleTyID: 455870286aa33290c00e55ba479a60251c79f3a7911Chris Lattner rv.DoubleVal = ((double(*)())(intptr_t)FPtr)(); 456d297aea5f24f2ad369162b8c1084cda4dcc839f0Chris Lattner return rv; 4571abac0d725374cb6e527d2a735a5272a4f7913faDale Johannesen case Type::X86_FP80TyID: 4581abac0d725374cb6e527d2a735a5272a4f7913faDale Johannesen case Type::FP128TyID: 4591abac0d725374cb6e527d2a735a5272a4f7913faDale Johannesen case Type::PPC_FP128TyID: 460c23197a26f34f559ea9797de51e187087c039c42Torok Edwin llvm_unreachable("long double not supported yet"); 4611abac0d725374cb6e527d2a735a5272a4f7913faDale Johannesen return rv; 462e5eab142a51373dd3bee758ea958575afbfce259Chris Lattner case Type::PointerTyID: 463870286aa33290c00e55ba479a60251c79f3a7911Chris Lattner return PTOGV(((void*(*)())(intptr_t)FPtr)()); 464d297aea5f24f2ad369162b8c1084cda4dcc839f0Chris Lattner } 465ff0f1bb32a439cf82cb09ee29544c894a2bfe877Chris Lattner } 46670975eef572b9e132bbaade16ba9edb76f15f287Brian Gaeke 467cc22e9f406cf21e3a2036bf6628ee7a5c850d42cChris Lattner // Okay, this is not one of our quick and easy cases. Because we don't have a 468cc22e9f406cf21e3a2036bf6628ee7a5c850d42cChris Lattner // full FFI, we have to codegen a nullary stub function that just calls the 469cc22e9f406cf21e3a2036bf6628ee7a5c850d42cChris Lattner // function we are interested in, passing in constants for all of the 470cc22e9f406cf21e3a2036bf6628ee7a5c850d42cChris Lattner // arguments. Make this function and return. 471cc22e9f406cf21e3a2036bf6628ee7a5c850d42cChris Lattner 472cc22e9f406cf21e3a2036bf6628ee7a5c850d42cChris Lattner // First, create the function. 473debcb01b0f0a15f568ca69e8f288fade4bfc7297Owen Anderson FunctionType *STy=FunctionType::get(RetTy, false); 474051a950000e21935165db56695e35bade668193bGabor Greif Function *Stub = Function::Create(STy, Function::InternalLinkage, "", 475051a950000e21935165db56695e35bade668193bGabor Greif F->getParent()); 476cc22e9f406cf21e3a2036bf6628ee7a5c850d42cChris Lattner 477cc22e9f406cf21e3a2036bf6628ee7a5c850d42cChris Lattner // Insert a basic block. 4781d0be15f89cb5056e20e2d24faa8d6afb1573bcaOwen Anderson BasicBlock *StubBB = BasicBlock::Create(F->getContext(), "", Stub); 479cc22e9f406cf21e3a2036bf6628ee7a5c850d42cChris Lattner 480cc22e9f406cf21e3a2036bf6628ee7a5c850d42cChris Lattner // Convert all of the GenericValue arguments over to constants. Note that we 481cc22e9f406cf21e3a2036bf6628ee7a5c850d42cChris Lattner // currently don't support varargs. 482990b849abc9481b8c7a482019cd0d95fe2f2a3eaChris Lattner SmallVector<Value*, 8> Args; 483cc22e9f406cf21e3a2036bf6628ee7a5c850d42cChris Lattner for (unsigned i = 0, e = ArgValues.size(); i != e; ++i) { 484cc22e9f406cf21e3a2036bf6628ee7a5c850d42cChris Lattner Constant *C = 0; 485cc22e9f406cf21e3a2036bf6628ee7a5c850d42cChris Lattner const Type *ArgTy = FTy->getParamType(i); 486cc22e9f406cf21e3a2036bf6628ee7a5c850d42cChris Lattner const GenericValue &AV = ArgValues[i]; 487cc22e9f406cf21e3a2036bf6628ee7a5c850d42cChris Lattner switch (ArgTy->getTypeID()) { 488c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("Unknown argument type for function call!"); 48902a260aa11a2e1b2c14335274d3c42ca3f3eabc0Chris Lattner case Type::IntegerTyID: 490eed707b1e6097aac2bb6b3d47271f6300ace7f2eOwen Anderson C = ConstantInt::get(F->getContext(), AV.IntVal); 49102a260aa11a2e1b2c14335274d3c42ca3f3eabc0Chris Lattner break; 49202a260aa11a2e1b2c14335274d3c42ca3f3eabc0Chris Lattner case Type::FloatTyID: 4936f83c9c6ef0e7f79825a0a8f22941815e4b684c7Owen Anderson C = ConstantFP::get(F->getContext(), APFloat(AV.FloatVal)); 49402a260aa11a2e1b2c14335274d3c42ca3f3eabc0Chris Lattner break; 49502a260aa11a2e1b2c14335274d3c42ca3f3eabc0Chris Lattner case Type::DoubleTyID: 4966f83c9c6ef0e7f79825a0a8f22941815e4b684c7Owen Anderson C = ConstantFP::get(F->getContext(), APFloat(AV.DoubleVal)); 49702a260aa11a2e1b2c14335274d3c42ca3f3eabc0Chris Lattner break; 4981abac0d725374cb6e527d2a735a5272a4f7913faDale Johannesen case Type::PPC_FP128TyID: 4991abac0d725374cb6e527d2a735a5272a4f7913faDale Johannesen case Type::X86_FP80TyID: 50002a260aa11a2e1b2c14335274d3c42ca3f3eabc0Chris Lattner case Type::FP128TyID: 5016f83c9c6ef0e7f79825a0a8f22941815e4b684c7Owen Anderson C = ConstantFP::get(F->getContext(), APFloat(AV.IntVal)); 50202a260aa11a2e1b2c14335274d3c42ca3f3eabc0Chris Lattner break; 503cc22e9f406cf21e3a2036bf6628ee7a5c850d42cChris Lattner case Type::PointerTyID: 504cc22e9f406cf21e3a2036bf6628ee7a5c850d42cChris Lattner void *ArgPtr = GVTOP(AV); 50502a260aa11a2e1b2c14335274d3c42ca3f3eabc0Chris Lattner if (sizeof(void*) == 4) 5061d0be15f89cb5056e20e2d24faa8d6afb1573bcaOwen Anderson C = ConstantInt::get(Type::getInt32Ty(F->getContext()), 5071d0be15f89cb5056e20e2d24faa8d6afb1573bcaOwen Anderson (int)(intptr_t)ArgPtr); 50802a260aa11a2e1b2c14335274d3c42ca3f3eabc0Chris Lattner else 5091d0be15f89cb5056e20e2d24faa8d6afb1573bcaOwen Anderson C = ConstantInt::get(Type::getInt64Ty(F->getContext()), 5101d0be15f89cb5056e20e2d24faa8d6afb1573bcaOwen Anderson (intptr_t)ArgPtr); 5119adc0abad3c3ed40a268ccbcee0c74cb9e1359feOwen Anderson // Cast the integer to pointer 512baf3c404409d5e47b13984a7f95bfbd6d1f2e79eOwen Anderson C = ConstantExpr::getIntToPtr(C, ArgTy); 513cc22e9f406cf21e3a2036bf6628ee7a5c850d42cChris Lattner break; 514cc22e9f406cf21e3a2036bf6628ee7a5c850d42cChris Lattner } 515cc22e9f406cf21e3a2036bf6628ee7a5c850d42cChris Lattner Args.push_back(C); 516cc22e9f406cf21e3a2036bf6628ee7a5c850d42cChris Lattner } 517cc22e9f406cf21e3a2036bf6628ee7a5c850d42cChris Lattner 518b1dbcd886a4b5597a839f299054b78b33fb2d6dfGabor Greif CallInst *TheCall = CallInst::Create(F, Args.begin(), Args.end(), 519b1dbcd886a4b5597a839f299054b78b33fb2d6dfGabor Greif "", StubBB); 520cdfc51ffe3eda17a611fe2aaed1a2e6650d3d203Chris Lattner TheCall->setCallingConv(F->getCallingConv()); 521a471e045b7cef5da428bdada4a362a4be671ef0bChris Lattner TheCall->setTailCall(); 5221d0be15f89cb5056e20e2d24faa8d6afb1573bcaOwen Anderson if (TheCall->getType() != Type::getVoidTy(F->getContext())) 5231d0be15f89cb5056e20e2d24faa8d6afb1573bcaOwen Anderson // Return result of the call. 5241d0be15f89cb5056e20e2d24faa8d6afb1573bcaOwen Anderson ReturnInst::Create(F->getContext(), TheCall, StubBB); 525cc22e9f406cf21e3a2036bf6628ee7a5c850d42cChris Lattner else 5261d0be15f89cb5056e20e2d24faa8d6afb1573bcaOwen Anderson ReturnInst::Create(F->getContext(), StubBB); // Just return void. 527cc22e9f406cf21e3a2036bf6628ee7a5c850d42cChris Lattner 528cc22e9f406cf21e3a2036bf6628ee7a5c850d42cChris Lattner // Finally, return the value returned by our nullary stub function. 529cc22e9f406cf21e3a2036bf6628ee7a5c850d42cChris Lattner return runFunction(Stub, std::vector<GenericValue>()); 530bd199fb1148b9e16c4e6f3d0ee386c2505a55b71Chris Lattner} 5314d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner 532df5a7daff9c7664bff8b713e8ed5155319bc6041Jeffrey Yasskinvoid JIT::RegisterJITEventListener(JITEventListener *L) { 533df5a7daff9c7664bff8b713e8ed5155319bc6041Jeffrey Yasskin if (L == NULL) 534df5a7daff9c7664bff8b713e8ed5155319bc6041Jeffrey Yasskin return; 535df5a7daff9c7664bff8b713e8ed5155319bc6041Jeffrey Yasskin MutexGuard locked(lock); 536df5a7daff9c7664bff8b713e8ed5155319bc6041Jeffrey Yasskin EventListeners.push_back(L); 537df5a7daff9c7664bff8b713e8ed5155319bc6041Jeffrey Yasskin} 538df5a7daff9c7664bff8b713e8ed5155319bc6041Jeffrey Yasskinvoid JIT::UnregisterJITEventListener(JITEventListener *L) { 539df5a7daff9c7664bff8b713e8ed5155319bc6041Jeffrey Yasskin if (L == NULL) 540df5a7daff9c7664bff8b713e8ed5155319bc6041Jeffrey Yasskin return; 541df5a7daff9c7664bff8b713e8ed5155319bc6041Jeffrey Yasskin MutexGuard locked(lock); 542df5a7daff9c7664bff8b713e8ed5155319bc6041Jeffrey Yasskin std::vector<JITEventListener*>::reverse_iterator I= 543df5a7daff9c7664bff8b713e8ed5155319bc6041Jeffrey Yasskin std::find(EventListeners.rbegin(), EventListeners.rend(), L); 544df5a7daff9c7664bff8b713e8ed5155319bc6041Jeffrey Yasskin if (I != EventListeners.rend()) { 545df5a7daff9c7664bff8b713e8ed5155319bc6041Jeffrey Yasskin std::swap(*I, EventListeners.back()); 546df5a7daff9c7664bff8b713e8ed5155319bc6041Jeffrey Yasskin EventListeners.pop_back(); 547df5a7daff9c7664bff8b713e8ed5155319bc6041Jeffrey Yasskin } 548df5a7daff9c7664bff8b713e8ed5155319bc6041Jeffrey Yasskin} 549df5a7daff9c7664bff8b713e8ed5155319bc6041Jeffrey Yasskinvoid JIT::NotifyFunctionEmitted( 550df5a7daff9c7664bff8b713e8ed5155319bc6041Jeffrey Yasskin const Function &F, 551df5a7daff9c7664bff8b713e8ed5155319bc6041Jeffrey Yasskin void *Code, size_t Size, 552df5a7daff9c7664bff8b713e8ed5155319bc6041Jeffrey Yasskin const JITEvent_EmittedFunctionDetails &Details) { 553df5a7daff9c7664bff8b713e8ed5155319bc6041Jeffrey Yasskin MutexGuard locked(lock); 554df5a7daff9c7664bff8b713e8ed5155319bc6041Jeffrey Yasskin for (unsigned I = 0, S = EventListeners.size(); I < S; ++I) { 555df5a7daff9c7664bff8b713e8ed5155319bc6041Jeffrey Yasskin EventListeners[I]->NotifyFunctionEmitted(F, Code, Size, Details); 556df5a7daff9c7664bff8b713e8ed5155319bc6041Jeffrey Yasskin } 557df5a7daff9c7664bff8b713e8ed5155319bc6041Jeffrey Yasskin} 558df5a7daff9c7664bff8b713e8ed5155319bc6041Jeffrey Yasskin 5597a9034c4db248fe8b8cb82762881b51b221988d3Jeffrey Yasskinvoid JIT::NotifyFreeingMachineCode(void *OldPtr) { 560df5a7daff9c7664bff8b713e8ed5155319bc6041Jeffrey Yasskin MutexGuard locked(lock); 561df5a7daff9c7664bff8b713e8ed5155319bc6041Jeffrey Yasskin for (unsigned I = 0, S = EventListeners.size(); I < S; ++I) { 5627a9034c4db248fe8b8cb82762881b51b221988d3Jeffrey Yasskin EventListeners[I]->NotifyFreeingMachineCode(OldPtr); 563df5a7daff9c7664bff8b713e8ed5155319bc6041Jeffrey Yasskin } 564df5a7daff9c7664bff8b713e8ed5155319bc6041Jeffrey Yasskin} 565df5a7daff9c7664bff8b713e8ed5155319bc6041Jeffrey Yasskin 5664d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner/// runJITOnFunction - Run the FunctionPassManager full of 5674d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner/// just-in-time compilation passes on F, hopefully filling in 5684d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner/// GlobalAddress[F] with the address of F's machine code. 5694d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner/// 570b3a847db0b991d3210706a2580428fdc2b6bf037Argyrios Kyrtzidisvoid JIT::runJITOnFunction(Function *F, MachineCodeInfo *MCI) { 571ee448630bdf7eb6037fe2c50518d32010c433ca3Reid Spencer MutexGuard locked(lock); 572b3a847db0b991d3210706a2580428fdc2b6bf037Argyrios Kyrtzidis 573df5a7daff9c7664bff8b713e8ed5155319bc6041Jeffrey Yasskin class MCIListener : public JITEventListener { 574df5a7daff9c7664bff8b713e8ed5155319bc6041Jeffrey Yasskin MachineCodeInfo *const MCI; 575df5a7daff9c7664bff8b713e8ed5155319bc6041Jeffrey Yasskin public: 576df5a7daff9c7664bff8b713e8ed5155319bc6041Jeffrey Yasskin MCIListener(MachineCodeInfo *mci) : MCI(mci) {} 577df5a7daff9c7664bff8b713e8ed5155319bc6041Jeffrey Yasskin virtual void NotifyFunctionEmitted(const Function &, 578df5a7daff9c7664bff8b713e8ed5155319bc6041Jeffrey Yasskin void *Code, size_t Size, 579df5a7daff9c7664bff8b713e8ed5155319bc6041Jeffrey Yasskin const EmittedFunctionDetails &) { 580df5a7daff9c7664bff8b713e8ed5155319bc6041Jeffrey Yasskin MCI->setAddress(Code); 581df5a7daff9c7664bff8b713e8ed5155319bc6041Jeffrey Yasskin MCI->setSize(Size); 582df5a7daff9c7664bff8b713e8ed5155319bc6041Jeffrey Yasskin } 583df5a7daff9c7664bff8b713e8ed5155319bc6041Jeffrey Yasskin }; 584df5a7daff9c7664bff8b713e8ed5155319bc6041Jeffrey Yasskin MCIListener MCIL(MCI); 585df5a7daff9c7664bff8b713e8ed5155319bc6041Jeffrey Yasskin RegisterJITEventListener(&MCIL); 586b3a847db0b991d3210706a2580428fdc2b6bf037Argyrios Kyrtzidis 58721afcda54479602c2936946731a3f1ee8e5d2322Dan Gohman runJITOnFunctionUnlocked(F, locked); 588b3a847db0b991d3210706a2580428fdc2b6bf037Argyrios Kyrtzidis 589df5a7daff9c7664bff8b713e8ed5155319bc6041Jeffrey Yasskin UnregisterJITEventListener(&MCIL); 59021afcda54479602c2936946731a3f1ee8e5d2322Dan Gohman} 59121afcda54479602c2936946731a3f1ee8e5d2322Dan Gohman 59221afcda54479602c2936946731a3f1ee8e5d2322Dan Gohmanvoid JIT::runJITOnFunctionUnlocked(Function *F, const MutexGuard &locked) { 59321afcda54479602c2936946731a3f1ee8e5d2322Dan Gohman static bool isAlreadyCodeGenerating = false; 59417f218e001862785c5ba5974a6374f2f7bc29ac0Chris Lattner assert(!isAlreadyCodeGenerating && "Error: Recursive compilation detected!"); 5954d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner 5964d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner // JIT the function 5974d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner isAlreadyCodeGenerating = true; 598f049e07eb8930214941c72f8e4409df394de1567Nate Begeman jitstate->getPM(locked).run(*F); 5994d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner isAlreadyCodeGenerating = false; 600c07ed1387503d25c0b93fcf617f69329d73fc589Chris Lattner 601d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman // If the function referred to another function that had not yet been 602dc85724f703bddf6988b6b3f20203beab775f32bJeffrey Yasskin // read from bitcode, and we are jitting non-lazily, emit it now. 603d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman while (!jitstate->getPendingFunctions(locked).empty()) { 604d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman Function *PF = jitstate->getPendingFunctions(locked).back(); 605d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman jitstate->getPendingFunctions(locked).pop_back(); 606d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman 607d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman // JIT the function 608d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman isAlreadyCodeGenerating = true; 609d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman jitstate->getPM(locked).run(*PF); 610d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman isAlreadyCodeGenerating = false; 611d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman 612d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman // Now that the function has been jitted, ask the JITEmitter to rewrite 613d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman // the stub with real address of the function. 614d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman updateFunctionStub(PF); 615c07ed1387503d25c0b93fcf617f69329d73fc589Chris Lattner } 616d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman 617d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman // If the JIT is configured to emit info so that dlsym can be used to 618d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman // rewrite stubs to external globals, do so now. 619dc85724f703bddf6988b6b3f20203beab775f32bJeffrey Yasskin if (areDlsymStubsEnabled() && !isCompilingLazily()) 620d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman updateDlsymStubTable(); 6214d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner} 6224d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner 6234d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner/// getPointerToFunction - This method is used to get the address of the 6244d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner/// specified function, compiling it if neccesary. 6254d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner/// 6264d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattnervoid *JIT::getPointerToFunction(Function *F) { 627ee448630bdf7eb6037fe2c50518d32010c433ca3Reid Spencer 628c07ed1387503d25c0b93fcf617f69329d73fc589Chris Lattner if (void *Addr = getPointerToGlobalIfAvailable(F)) 629c07ed1387503d25c0b93fcf617f69329d73fc589Chris Lattner return Addr; // Check if function already code gen'd 6304d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner 631a3ac0c105d26f8535d03031db7e97274b3ff8159Dan Gohman MutexGuard locked(lock); 632e91208c9631c98abbdce19ca7b1f51d9241faa18Nicolas Geoffray 633e91208c9631c98abbdce19ca7b1f51d9241faa18Nicolas Geoffray // Now that this thread owns the lock, check if another thread has already 634e91208c9631c98abbdce19ca7b1f51d9241faa18Nicolas Geoffray // code gen'd the function. 635e91208c9631c98abbdce19ca7b1f51d9241faa18Nicolas Geoffray if (void *Addr = getPointerToGlobalIfAvailable(F)) 636e91208c9631c98abbdce19ca7b1f51d9241faa18Nicolas Geoffray return Addr; 637a3ac0c105d26f8535d03031db7e97274b3ff8159Dan Gohman 638fe854034677f59baca1e38075e71f6efca247a03Chris Lattner // Make sure we read in the function if it exists in this Module. 639a99be51bf5cdac1438069d4b01766c47704961c8Gabor Greif if (F->hasNotBeenReadFromBitcode()) { 640fe854034677f59baca1e38075e71f6efca247a03Chris Lattner // Determine the module provider this function is provided by. 641fe854034677f59baca1e38075e71f6efca247a03Chris Lattner Module *M = F->getParent(); 642fe854034677f59baca1e38075e71f6efca247a03Chris Lattner ModuleProvider *MP = 0; 643fe854034677f59baca1e38075e71f6efca247a03Chris Lattner for (unsigned i = 0, e = Modules.size(); i != e; ++i) { 644fe854034677f59baca1e38075e71f6efca247a03Chris Lattner if (Modules[i]->getModule() == M) { 645fe854034677f59baca1e38075e71f6efca247a03Chris Lattner MP = Modules[i]; 646fe854034677f59baca1e38075e71f6efca247a03Chris Lattner break; 647fe854034677f59baca1e38075e71f6efca247a03Chris Lattner } 648fe854034677f59baca1e38075e71f6efca247a03Chris Lattner } 649fe854034677f59baca1e38075e71f6efca247a03Chris Lattner assert(MP && "Function isn't in a module we know about!"); 650fe854034677f59baca1e38075e71f6efca247a03Chris Lattner 6515c72a3ae106d8d1dd6aa7e573948dac4102aca7bChris Lattner std::string ErrorMsg; 6525c72a3ae106d8d1dd6aa7e573948dac4102aca7bChris Lattner if (MP->materializeFunction(F, &ErrorMsg)) { 6537d696d80409aad20bb5da0fc4eccab941dd371d4Torok Edwin llvm_report_error("Error reading function '" + F->getName()+ 6547d696d80409aad20bb5da0fc4eccab941dd371d4Torok Edwin "' from bitcode file: " + ErrorMsg); 6550050ef831912eea2377c815bc59c09ed828f2684Chris Lattner } 6561c341c8462a208ccc5ba4b4e030cdc989ce38818Mon P Wang 65769f9378675b23135043d93aa58300fed3ec41cbfDan Gohman // Now retry to get the address. 65869f9378675b23135043d93aa58300fed3ec41cbfDan Gohman if (void *Addr = getPointerToGlobalIfAvailable(F)) 65969f9378675b23135043d93aa58300fed3ec41cbfDan Gohman return Addr; 660fd7d99120b394e7aa4cf0b670f7b783a61dec3a1Nicolas Geoffray } 6614d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner 66246264f020a2f08c605ac69754291a7413d747766Chris Lattner if (F->isDeclaration() || F->hasAvailableExternallyLinkage()) { 663667d4b8de6dea70195ff12ef39a4deebffa2f5c7Duncan Sands bool AbortOnFailure = 664667d4b8de6dea70195ff12ef39a4deebffa2f5c7Duncan Sands !areDlsymStubsEnabled() && !F->hasExternalWeakLinkage(); 66569f9378675b23135043d93aa58300fed3ec41cbfDan Gohman void *Addr = getPointerToNamedFunction(F->getName(), AbortOnFailure); 666c07ed1387503d25c0b93fcf617f69329d73fc589Chris Lattner addGlobalMapping(F, Addr); 667c07ed1387503d25c0b93fcf617f69329d73fc589Chris Lattner return Addr; 668c07ed1387503d25c0b93fcf617f69329d73fc589Chris Lattner } 6694d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner 67021afcda54479602c2936946731a3f1ee8e5d2322Dan Gohman runJITOnFunctionUnlocked(F, locked); 671c07ed1387503d25c0b93fcf617f69329d73fc589Chris Lattner 672c07ed1387503d25c0b93fcf617f69329d73fc589Chris Lattner void *Addr = getPointerToGlobalIfAvailable(F); 6734d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner assert(Addr && "Code generation didn't add function to GlobalAddress table!"); 6744d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner return Addr; 6754d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner} 6764d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner 677c07ed1387503d25c0b93fcf617f69329d73fc589Chris Lattner/// getOrEmitGlobalVariable - Return the address of the specified global 678c07ed1387503d25c0b93fcf617f69329d73fc589Chris Lattner/// variable, possibly emitting it to memory if needed. This is used by the 679c07ed1387503d25c0b93fcf617f69329d73fc589Chris Lattner/// Emitter. 680c07ed1387503d25c0b93fcf617f69329d73fc589Chris Lattnervoid *JIT::getOrEmitGlobalVariable(const GlobalVariable *GV) { 681ee448630bdf7eb6037fe2c50518d32010c433ca3Reid Spencer MutexGuard locked(lock); 682ee448630bdf7eb6037fe2c50518d32010c433ca3Reid Spencer 683c07ed1387503d25c0b93fcf617f69329d73fc589Chris Lattner void *Ptr = getPointerToGlobalIfAvailable(GV); 684c07ed1387503d25c0b93fcf617f69329d73fc589Chris Lattner if (Ptr) return Ptr; 685c07ed1387503d25c0b93fcf617f69329d73fc589Chris Lattner 686c07ed1387503d25c0b93fcf617f69329d73fc589Chris Lattner // If the global is external, just remember the address. 6875cbf985dcbc89fba3208e7baf8b6f488b06d3ec9Reid Spencer if (GV->isDeclaration()) { 6883b30a6e92d1da79674451879d4112a8f83cc12a4Anton Korobeynikov#if HAVE___DSO_HANDLE 6895f42c550305814f916207b9604b92fbd258e8eafEvan Cheng if (GV->getName() == "__dso_handle") 6905f42c550305814f916207b9604b92fbd258e8eafEvan Cheng return (void*)&__dso_handle; 691b82ab94e20bd48ac149746864e0d5b1653bdcf3eEvan Cheng#endif 692fbee579ed46016166d88b4defb81a2e7e253062dDaniel Dunbar Ptr = sys::DynamicLibrary::SearchForAddressOfSymbol(GV->getName()); 69366941988de6a295649b33f4c2b0f36a094b2244dNate Begeman if (Ptr == 0 && !areDlsymStubsEnabled()) { 69431e2466f159a887fed9139067a676f65adf2a8c3Torok Edwin llvm_report_error("Could not resolve external global address: " 69531e2466f159a887fed9139067a676f65adf2a8c3Torok Edwin +GV->getName()); 696c07ed1387503d25c0b93fcf617f69329d73fc589Chris Lattner } 69766941988de6a295649b33f4c2b0f36a094b2244dNate Begeman addGlobalMapping(GV, Ptr); 698c07ed1387503d25c0b93fcf617f69329d73fc589Chris Lattner } else { 699dd947ea3c5e020c33c58a31939561265b980a3adDale Johannesen // If the global hasn't been emitted to memory yet, allocate space and 700489393d7b92107cc3de17d8dbe7dd11ab7395fdcJeffrey Yasskin // emit it into memory. 701489393d7b92107cc3de17d8dbe7dd11ab7395fdcJeffrey Yasskin Ptr = getMemoryForGV(GV); 702dd947ea3c5e020c33c58a31939561265b980a3adDale Johannesen addGlobalMapping(GV, Ptr); 703489393d7b92107cc3de17d8dbe7dd11ab7395fdcJeffrey Yasskin EmitGlobalVariable(GV); // Initialize the variable. 704c07ed1387503d25c0b93fcf617f69329d73fc589Chris Lattner } 705c07ed1387503d25c0b93fcf617f69329d73fc589Chris Lattner return Ptr; 706c07ed1387503d25c0b93fcf617f69329d73fc589Chris Lattner} 707c07ed1387503d25c0b93fcf617f69329d73fc589Chris Lattner 7084d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner/// recompileAndRelinkFunction - This method is used to force a function 7094d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner/// which has already been compiled, to be compiled again, possibly 7104d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner/// after it has been modified. Then the entry to the old copy is overwritten 7114d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner/// with a branch to the new copy. If there was no old copy, this acts 7124d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner/// just like JIT::getPointerToFunction(). 7134d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner/// 7144d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattnervoid *JIT::recompileAndRelinkFunction(Function *F) { 715c07ed1387503d25c0b93fcf617f69329d73fc589Chris Lattner void *OldAddr = getPointerToGlobalIfAvailable(F); 7164d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner 717c07ed1387503d25c0b93fcf617f69329d73fc589Chris Lattner // If it's not already compiled there is no reason to patch it up. 718c07ed1387503d25c0b93fcf617f69329d73fc589Chris Lattner if (OldAddr == 0) { return getPointerToFunction(F); } 7194d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner 720c07ed1387503d25c0b93fcf617f69329d73fc589Chris Lattner // Delete the old function mapping. 721c07ed1387503d25c0b93fcf617f69329d73fc589Chris Lattner addGlobalMapping(F, 0); 722c07ed1387503d25c0b93fcf617f69329d73fc589Chris Lattner 723c07ed1387503d25c0b93fcf617f69329d73fc589Chris Lattner // Recodegen the function 7244d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner runJITOnFunction(F); 725c07ed1387503d25c0b93fcf617f69329d73fc589Chris Lattner 726c07ed1387503d25c0b93fcf617f69329d73fc589Chris Lattner // Update state, forward the old function to the new function. 727c07ed1387503d25c0b93fcf617f69329d73fc589Chris Lattner void *Addr = getPointerToGlobalIfAvailable(F); 7284d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner assert(Addr && "Code generation didn't add function to GlobalAddress table!"); 7294d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner TJI.replaceMachineCodeForFunction(OldAddr, Addr); 7304d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner return Addr; 7314d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner} 732895eddfad43f848d5accce1789aa80be0db459d3Misha Brukman 73346fa139e26be6ebc00be2fb45820c2560dd22a32Nicolas Geoffray/// getMemoryForGV - This method abstracts memory allocation of global 73446fa139e26be6ebc00be2fb45820c2560dd22a32Nicolas Geoffray/// variable so that the JIT can allocate thread local variables depending 73546fa139e26be6ebc00be2fb45820c2560dd22a32Nicolas Geoffray/// on the target. 73646fa139e26be6ebc00be2fb45820c2560dd22a32Nicolas Geoffray/// 73746fa139e26be6ebc00be2fb45820c2560dd22a32Nicolas Geoffraychar* JIT::getMemoryForGV(const GlobalVariable* GV) { 738489393d7b92107cc3de17d8dbe7dd11ab7395fdcJeffrey Yasskin char *Ptr; 739489393d7b92107cc3de17d8dbe7dd11ab7395fdcJeffrey Yasskin 740489393d7b92107cc3de17d8dbe7dd11ab7395fdcJeffrey Yasskin // GlobalVariable's which are not "constant" will cause trouble in a server 741489393d7b92107cc3de17d8dbe7dd11ab7395fdcJeffrey Yasskin // situation. It's returned in the same block of memory as code which may 742489393d7b92107cc3de17d8dbe7dd11ab7395fdcJeffrey Yasskin // not be writable. 743489393d7b92107cc3de17d8dbe7dd11ab7395fdcJeffrey Yasskin if (isGVCompilationDisabled() && !GV->isConstant()) { 7447d696d80409aad20bb5da0fc4eccab941dd371d4Torok Edwin llvm_report_error("Compilation of non-internal GlobalValue is disabled!"); 745489393d7b92107cc3de17d8dbe7dd11ab7395fdcJeffrey Yasskin } 746489393d7b92107cc3de17d8dbe7dd11ab7395fdcJeffrey Yasskin 747489393d7b92107cc3de17d8dbe7dd11ab7395fdcJeffrey Yasskin // Some applications require globals and code to live together, so they may 748489393d7b92107cc3de17d8dbe7dd11ab7395fdcJeffrey Yasskin // be allocated into the same buffer, but in general globals are allocated 749489393d7b92107cc3de17d8dbe7dd11ab7395fdcJeffrey Yasskin // through the memory manager which puts them near the code but not in the 750489393d7b92107cc3de17d8dbe7dd11ab7395fdcJeffrey Yasskin // same buffer. 751489393d7b92107cc3de17d8dbe7dd11ab7395fdcJeffrey Yasskin const Type *GlobalType = GV->getType()->getElementType(); 752489393d7b92107cc3de17d8dbe7dd11ab7395fdcJeffrey Yasskin size_t S = getTargetData()->getTypeAllocSize(GlobalType); 753489393d7b92107cc3de17d8dbe7dd11ab7395fdcJeffrey Yasskin size_t A = getTargetData()->getPreferredAlignment(GV); 75446fa139e26be6ebc00be2fb45820c2560dd22a32Nicolas Geoffray if (GV->isThreadLocal()) { 75546fa139e26be6ebc00be2fb45820c2560dd22a32Nicolas Geoffray MutexGuard locked(lock); 756489393d7b92107cc3de17d8dbe7dd11ab7395fdcJeffrey Yasskin Ptr = TJI.allocateThreadLocalMemory(S); 757489393d7b92107cc3de17d8dbe7dd11ab7395fdcJeffrey Yasskin } else if (TJI.allocateSeparateGVMemory()) { 758489393d7b92107cc3de17d8dbe7dd11ab7395fdcJeffrey Yasskin if (A <= 8) { 759489393d7b92107cc3de17d8dbe7dd11ab7395fdcJeffrey Yasskin Ptr = (char*)malloc(S); 760489393d7b92107cc3de17d8dbe7dd11ab7395fdcJeffrey Yasskin } else { 761489393d7b92107cc3de17d8dbe7dd11ab7395fdcJeffrey Yasskin // Allocate S+A bytes of memory, then use an aligned pointer within that 762489393d7b92107cc3de17d8dbe7dd11ab7395fdcJeffrey Yasskin // space. 763489393d7b92107cc3de17d8dbe7dd11ab7395fdcJeffrey Yasskin Ptr = (char*)malloc(S+A); 764489393d7b92107cc3de17d8dbe7dd11ab7395fdcJeffrey Yasskin unsigned MisAligned = ((intptr_t)Ptr & (A-1)); 765489393d7b92107cc3de17d8dbe7dd11ab7395fdcJeffrey Yasskin Ptr = Ptr + (MisAligned ? (A-MisAligned) : 0); 766489393d7b92107cc3de17d8dbe7dd11ab7395fdcJeffrey Yasskin } 767489393d7b92107cc3de17d8dbe7dd11ab7395fdcJeffrey Yasskin } else if (AllocateGVsWithCode) { 768489393d7b92107cc3de17d8dbe7dd11ab7395fdcJeffrey Yasskin Ptr = (char*)JCE->allocateSpace(S, A); 76946fa139e26be6ebc00be2fb45820c2560dd22a32Nicolas Geoffray } else { 770489393d7b92107cc3de17d8dbe7dd11ab7395fdcJeffrey Yasskin Ptr = (char*)JCE->allocateGlobal(S, A); 77146fa139e26be6ebc00be2fb45820c2560dd22a32Nicolas Geoffray } 772489393d7b92107cc3de17d8dbe7dd11ab7395fdcJeffrey Yasskin return Ptr; 77346fa139e26be6ebc00be2fb45820c2560dd22a32Nicolas Geoffray} 774d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman 775d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begemanvoid JIT::addPendingFunction(Function *F) { 776d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman MutexGuard locked(lock); 777d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman jitstate->getPendingFunctions(locked).push_back(F); 778d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman} 779df5a7daff9c7664bff8b713e8ed5155319bc6041Jeffrey Yasskin 780df5a7daff9c7664bff8b713e8ed5155319bc6041Jeffrey Yasskin 781df5a7daff9c7664bff8b713e8ed5155319bc6041Jeffrey YasskinJITEventListener::~JITEventListener() {} 782