JIT.cpp revision 66941988de6a295649b33f4c2b0f36a094b2244d
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" 224d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner#include "llvm/CodeGen/MachineCodeEmitter.h" 239722294d30fff2a432d8e171eb904f33956353e2Brian Gaeke#include "llvm/ExecutionEngine/GenericValue.h" 2407000c6f01d8f57170f2d4c77a86d934bdc5c696Owen Anderson#include "llvm/Target/TargetData.h" 25bd199fb1148b9e16c4e6f3d0ee386c2505a55b71Chris Lattner#include "llvm/Target/TargetMachine.h" 264d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner#include "llvm/Target/TargetJITInfo.h" 2744e3dd1672572df28e79649c86f2d44bf3730062Chris Lattner#include "llvm/Support/Dwarf.h" 2844e3dd1672572df28e79649c86f2d44bf3730062Chris Lattner#include "llvm/Support/MutexGuard.h" 2944e3dd1672572df28e79649c86f2d44bf3730062Chris Lattner#include "llvm/System/DynamicLibrary.h" 303b30a6e92d1da79674451879d4112a8f83cc12a4Anton Korobeynikov#include "llvm/Config/config.h" 313b30a6e92d1da79674451879d4112a8f83cc12a4Anton Korobeynikov 32c19aadee66b744311afe6e420847e80822a765f2Chris Lattnerusing namespace llvm; 33abb027cf412944db4d27579ba3ae00717d23c25eMisha Brukman 34b76ea74845849e7a499603bb04bfe1614101e910Nate Begeman#ifdef __APPLE__ 353b30a6e92d1da79674451879d4112a8f83cc12a4Anton Korobeynikov// Apple gcc defaults to -fuse-cxa-atexit (i.e. calls __cxa_atexit instead 363b30a6e92d1da79674451879d4112a8f83cc12a4Anton Korobeynikov// of atexit). It passes the address of linker generated symbol __dso_handle 373b30a6e92d1da79674451879d4112a8f83cc12a4Anton Korobeynikov// to the function. 383b30a6e92d1da79674451879d4112a8f83cc12a4Anton Korobeynikov// This configuration change happened at version 5330. 393b30a6e92d1da79674451879d4112a8f83cc12a4Anton Korobeynikov# include <AvailabilityMacros.h> 403b30a6e92d1da79674451879d4112a8f83cc12a4Anton Korobeynikov# if defined(MAC_OS_X_VERSION_10_4) && \ 413b30a6e92d1da79674451879d4112a8f83cc12a4Anton Korobeynikov ((MAC_OS_X_VERSION_MIN_REQUIRED > MAC_OS_X_VERSION_10_4) || \ 423b30a6e92d1da79674451879d4112a8f83cc12a4Anton Korobeynikov (MAC_OS_X_VERSION_MIN_REQUIRED == MAC_OS_X_VERSION_10_4 && \ 433b30a6e92d1da79674451879d4112a8f83cc12a4Anton Korobeynikov __APPLE_CC__ >= 5330)) 443b30a6e92d1da79674451879d4112a8f83cc12a4Anton Korobeynikov# ifndef HAVE___DSO_HANDLE 453b30a6e92d1da79674451879d4112a8f83cc12a4Anton Korobeynikov# define HAVE___DSO_HANDLE 1 463b30a6e92d1da79674451879d4112a8f83cc12a4Anton Korobeynikov# endif 473b30a6e92d1da79674451879d4112a8f83cc12a4Anton Korobeynikov# endif 485f42c550305814f916207b9604b92fbd258e8eafEvan Cheng#endif 493b30a6e92d1da79674451879d4112a8f83cc12a4Anton Korobeynikov 503b30a6e92d1da79674451879d4112a8f83cc12a4Anton Korobeynikov#if HAVE___DSO_HANDLE 513b30a6e92d1da79674451879d4112a8f83cc12a4Anton Korobeynikovextern void *__dso_handle __attribute__ ((__visibility__ ("hidden"))); 52b76ea74845849e7a499603bb04bfe1614101e910Nate Begeman#endif 535f42c550305814f916207b9604b92fbd258e8eafEvan Cheng 54844731a7f1909f55935e3514c9e713a62d67662eDan Gohmannamespace { 55844731a7f1909f55935e3514c9e713a62d67662eDan Gohman 562fe4bb06c6c40d16b7a5ae9cdf6bb6fe94d51be0Chris Lattnerstatic struct RegisterJIT { 572fe4bb06c6c40d16b7a5ae9cdf6bb6fe94d51be0Chris Lattner RegisterJIT() { JIT::Register(); } 582fe4bb06c6c40d16b7a5ae9cdf6bb6fe94d51be0Chris Lattner} JITRegistrator; 592fe4bb06c6c40d16b7a5ae9cdf6bb6fe94d51be0Chris Lattner 60844731a7f1909f55935e3514c9e713a62d67662eDan Gohman} 61844731a7f1909f55935e3514c9e713a62d67662eDan Gohman 622f51914d828b462b054195e73c75448f24e01979Jeff Cohennamespace llvm { 632f51914d828b462b054195e73c75448f24e01979Jeff Cohen void LinkInJIT() { 642f51914d828b462b054195e73c75448f24e01979Jeff Cohen } 652f51914d828b462b054195e73c75448f24e01979Jeff Cohen} 662f51914d828b462b054195e73c75448f24e01979Jeff Cohen 67d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray 682d5424d76add9714d95239f183f7f88263f44360Evan Cheng#if defined(__GNUC__) && !defined(__ARM__EABI__) 69d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray 70d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray// libgcc defines the __register_frame function to dynamically register new 71d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray// dwarf frames for exception handling. This functionality is not portable 72d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray// across compilers and is only provided by GCC. We use the __register_frame 73d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray// function here so that code generated by the JIT cooperates with the unwinding 74d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray// runtime of libgcc. When JITting with exception handling enable, LLVM 75d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray// generates dwarf frames and registers it to libgcc with __register_frame. 76d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray// 77d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray// The __register_frame function works with Linux. 78d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray// 79d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray// Unfortunately, this functionality seems to be in libgcc after the unwinding 80d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray// library of libgcc for darwin was written. The code for darwin overwrites the 81d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray// value updated by __register_frame with a value fetched with "keymgr". 82d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray// "keymgr" is an obsolete functionality, which should be rewritten some day. 83d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray// In the meantime, since "keymgr" is on all libgccs shipped with apple-gcc, we 84d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray// need a workaround in LLVM which uses the "keymgr" to dynamically modify the 85d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray// values of an opaque key, used by libgcc to find dwarf tables. 86d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray 87299d9d74e9b010c499557380fb6467f5361e141aAnton Korobeynikovextern "C" void __register_frame(void*); 88d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray 892d5424d76add9714d95239f183f7f88263f44360Evan Cheng#if defined(__APPLE__) 90d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray 91d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffraynamespace { 92d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray 93d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray// LibgccObject - This is the structure defined in libgcc. There is no #include 94d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray// provided for this structure, so we also define it here. libgcc calls it 95d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray// "struct object". The structure is undocumented in libgcc. 96d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffraystruct LibgccObject { 97d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray void *unused1; 98d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray void *unused2; 99d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray void *unused3; 100d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray 101d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray /// frame - Pointer to the exception table. 102d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray void *frame; 103d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray 104d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray /// encoding - The encoding of the object? 105d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray union { 106d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray struct { 107d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray unsigned long sorted : 1; 108d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray unsigned long from_array : 1; 109d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray unsigned long mixed_encoding : 1; 110d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray unsigned long encoding : 8; 111d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray unsigned long count : 21; 112d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray } b; 113d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray size_t i; 114d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray } encoding; 115d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray 116d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray /// fde_end - libgcc defines this field only if some macro is defined. We 117d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray /// include this field even if it may not there, to make libgcc happy. 118d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray char *fde_end; 119d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray 120d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray /// next - At least we know it's a chained list! 121d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray struct LibgccObject *next; 122d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray}; 123d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray 124d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray// "kemgr" stuff. Apparently, all frame tables are stored there. 125d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffrayextern "C" void _keymgr_set_and_unlock_processwide_ptr(int, void *); 126d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffrayextern "C" void *_keymgr_get_and_lock_processwide_ptr(int); 127d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray#define KEYMGR_GCC3_DW2_OBJ_LIST 302 /* Dwarf2 object list */ 128d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray 129d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray/// LibgccObjectInfo - libgcc defines this struct as km_object_info. It 130d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray/// probably contains all dwarf tables that are loaded. 131d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffraystruct LibgccObjectInfo { 132d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray 133d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray /// seenObjects - LibgccObjects already parsed by the unwinding runtime. 134d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray /// 135d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray struct LibgccObject* seenObjects; 136d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray 137d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray /// unseenObjects - LibgccObjects not parsed yet by the unwinding runtime. 138d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray /// 139d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray struct LibgccObject* unseenObjects; 140d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray 141d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray unsigned unused[2]; 142d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray}; 143d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray 144d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray/// darwin_register_frame - Since __register_frame does not work with darwin's 145d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray/// libgcc,we provide our own function, which "tricks" libgcc by modifying the 146d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray/// "Dwarf2 object list" key. 147d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffrayvoid DarwinRegisterFrame(void* FrameBegin) { 148d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray // Get the key. 14944e3dd1672572df28e79649c86f2d44bf3730062Chris Lattner LibgccObjectInfo* LOI = (struct LibgccObjectInfo*) 150d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray _keymgr_get_and_lock_processwide_ptr(KEYMGR_GCC3_DW2_OBJ_LIST); 15144e3dd1672572df28e79649c86f2d44bf3730062Chris Lattner assert(LOI && "This should be preallocated by the runtime"); 152d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray 153d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray // Allocate a new LibgccObject to represent this frame. Deallocation of this 154d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray // object may be impossible: since darwin code in libgcc was written after 155d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray // the ability to dynamically register frames, things may crash if we 156d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray // deallocate it. 157d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray struct LibgccObject* ob = (struct LibgccObject*) 158d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray malloc(sizeof(struct LibgccObject)); 159d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray 160d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray // Do like libgcc for the values of the field. 161d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray ob->unused1 = (void *)-1; 162d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray ob->unused2 = 0; 163d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray ob->unused3 = 0; 164d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray ob->frame = FrameBegin; 165d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray ob->encoding.i = 0; 166d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray ob->encoding.b.encoding = llvm::dwarf::DW_EH_PE_omit; 167d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray 168d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray // Put the info on both places, as libgcc uses the first or the the second 169d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray // field. Note that we rely on having two pointers here. If fde_end was a 170d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray // char, things would get complicated. 171d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray ob->fde_end = (char*)LOI->unseenObjects; 172d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray ob->next = LOI->unseenObjects; 173d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray 174d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray // Update the key's unseenObjects list. 175d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray LOI->unseenObjects = ob; 176d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray 177d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray // Finally update the "key". Apparently, libgcc requires it. 178d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray _keymgr_set_and_unlock_processwide_ptr(KEYMGR_GCC3_DW2_OBJ_LIST, 179d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray LOI); 180d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray 181d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray} 182d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray 183d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray} 184d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray#endif // __APPLE__ 185d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray#endif // __GNUC__ 186299d9d74e9b010c499557380fb6467f5361e141aAnton Korobeynikov 18734c9433004cabd4760987dce4804a91c84908219Chris Lattner/// createJIT - This is the factory method for creating a JIT for the current 18834c9433004cabd4760987dce4804a91c84908219Chris Lattner/// machine, it does not fall back to the interpreter. This takes ownership 18934c9433004cabd4760987dce4804a91c84908219Chris Lattner/// of the module provider. 19034c9433004cabd4760987dce4804a91c84908219Chris LattnerExecutionEngine *ExecutionEngine::createJIT(ModuleProvider *MP, 19134c9433004cabd4760987dce4804a91c84908219Chris Lattner std::string *ErrorStr, 192502f20b17ede40de84503010b7699b328a4f2867Evan Cheng JITMemoryManager *JMM, 193502f20b17ede40de84503010b7699b328a4f2867Evan Cheng bool Fast) { 194502f20b17ede40de84503010b7699b328a4f2867Evan Cheng ExecutionEngine *EE = JIT::createJIT(MP, ErrorStr, JMM, Fast); 19534c9433004cabd4760987dce4804a91c84908219Chris Lattner if (!EE) return 0; 19634c9433004cabd4760987dce4804a91c84908219Chris Lattner 19734c9433004cabd4760987dce4804a91c84908219Chris Lattner // Make sure we can resolve symbols in the program as well. The zero arg 19834c9433004cabd4760987dce4804a91c84908219Chris Lattner // to the function tells DynamicLibrary to load the program, not a library. 19934c9433004cabd4760987dce4804a91c84908219Chris Lattner sys::DynamicLibrary::LoadLibraryPermanently(0, ErrorStr); 20034c9433004cabd4760987dce4804a91c84908219Chris Lattner return EE; 20134c9433004cabd4760987dce4804a91c84908219Chris Lattner} 20234c9433004cabd4760987dce4804a91c84908219Chris Lattner 20334c9433004cabd4760987dce4804a91c84908219Chris LattnerJIT::JIT(ModuleProvider *MP, TargetMachine &tm, TargetJITInfo &tji, 204502f20b17ede40de84503010b7699b328a4f2867Evan Cheng JITMemoryManager *JMM, bool Fast) 205f049e07eb8930214941c72f8e4409df394de1567Nate Begeman : ExecutionEngine(MP), TM(tm), TJI(tji) { 206bd199fb1148b9e16c4e6f3d0ee386c2505a55b71Chris Lattner setTargetData(TM.getTargetData()); 207abb027cf412944db4d27579ba3ae00717d23c25eMisha Brukman 208f049e07eb8930214941c72f8e4409df394de1567Nate Begeman jitstate = new JITState(MP); 209f049e07eb8930214941c72f8e4409df394de1567Nate Begeman 210abb027cf412944db4d27579ba3ae00717d23c25eMisha Brukman // Initialize MCE 21134c9433004cabd4760987dce4804a91c84908219Chris Lattner MCE = createEmitter(*this, JMM); 212f976c856fcc5055f3fc7d9f070d72c2d027c1d9dMisha Brukman 21350872d5385463cf1d2e23a758516e7f818e1af24Brian Gaeke // Add target data 214ee448630bdf7eb6037fe2c50518d32010c433ca3Reid Spencer MutexGuard locked(lock); 215f049e07eb8930214941c72f8e4409df394de1567Nate Begeman FunctionPassManager &PM = jitstate->getPM(locked); 216b93b0347d8715e9f2ded1dc56a086f92aeedfb86Chris Lattner PM.add(new TargetData(*TM.getTargetData())); 21750872d5385463cf1d2e23a758516e7f818e1af24Brian Gaeke 2184d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner // Turn the machine code intermediate representation into bytes in memory that 2194d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner // may be executed. 220502f20b17ede40de84503010b7699b328a4f2867Evan Cheng if (TM.addPassesToEmitMachineCode(PM, *MCE, Fast)) { 221832171cb9724d2d31c8dfb73172e2be8f6dd13eeBill Wendling cerr << "Target does not support machine code emission!\n"; 2224d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner abort(); 2234d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner } 2241911fd4f85aebcd4d7b8f27313c5a363eebf49cbChris Lattner 225a7ec87cd0793c463d792323087b2fb3a4871efe0Nicolas Geoffray // Register routine for informing unwinding runtime about new EH frames 2262d5424d76add9714d95239f183f7f88263f44360Evan Cheng#if defined(__GNUC__) && !defined(__ARM_EABI__) 227d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray#if defined(__APPLE__) 228d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray struct LibgccObjectInfo* LOI = (struct LibgccObjectInfo*) 229d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray _keymgr_get_and_lock_processwide_ptr(KEYMGR_GCC3_DW2_OBJ_LIST); 230d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray 231d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray // The key is created on demand, and libgcc creates it the first time an 232d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray // exception occurs. Since we need the key to register frames, we create 233d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray // it now. 234d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray if (!LOI) { 235d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray LOI = (LibgccObjectInfo*)malloc(sizeof(struct LibgccObjectInfo)); 236d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray _keymgr_set_and_unlock_processwide_ptr(KEYMGR_GCC3_DW2_OBJ_LIST, 237d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray LOI); 238d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray } 239d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray InstallExceptionTableRegister(DarwinRegisterFrame); 240d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray#else 241a7ec87cd0793c463d792323087b2fb3a4871efe0Nicolas Geoffray InstallExceptionTableRegister(__register_frame); 242d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray#endif // __APPLE__ 243d046fc61ac28f65b209185a12a5e83716941d59bNicolas Geoffray#endif // __GNUC__ 244a7ec87cd0793c463d792323087b2fb3a4871efe0Nicolas Geoffray 2451911fd4f85aebcd4d7b8f27313c5a363eebf49cbChris Lattner // Initialize passes. 2461911fd4f85aebcd4d7b8f27313c5a363eebf49cbChris Lattner PM.doInitialization(); 247bd199fb1148b9e16c4e6f3d0ee386c2505a55b71Chris Lattner} 248bd199fb1148b9e16c4e6f3d0ee386c2505a55b71Chris Lattner 2494d326fa9bea5b80147edf14d1521fc41ce315275Chris LattnerJIT::~JIT() { 250f049e07eb8930214941c72f8e4409df394de1567Nate Begeman delete jitstate; 2514d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner delete MCE; 2524d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner delete &TM; 2534d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner} 2544d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner 255f049e07eb8930214941c72f8e4409df394de1567Nate Begeman/// addModuleProvider - Add a new ModuleProvider to the JIT. If we previously 256f049e07eb8930214941c72f8e4409df394de1567Nate Begeman/// removed the last ModuleProvider, we need re-initialize jitstate with a valid 257f049e07eb8930214941c72f8e4409df394de1567Nate Begeman/// ModuleProvider. 258f049e07eb8930214941c72f8e4409df394de1567Nate Begemanvoid JIT::addModuleProvider(ModuleProvider *MP) { 259f049e07eb8930214941c72f8e4409df394de1567Nate Begeman MutexGuard locked(lock); 260f049e07eb8930214941c72f8e4409df394de1567Nate Begeman 261f049e07eb8930214941c72f8e4409df394de1567Nate Begeman if (Modules.empty()) { 262f049e07eb8930214941c72f8e4409df394de1567Nate Begeman assert(!jitstate && "jitstate should be NULL if Modules vector is empty!"); 263f049e07eb8930214941c72f8e4409df394de1567Nate Begeman 264f049e07eb8930214941c72f8e4409df394de1567Nate Begeman jitstate = new JITState(MP); 265f049e07eb8930214941c72f8e4409df394de1567Nate Begeman 266f049e07eb8930214941c72f8e4409df394de1567Nate Begeman FunctionPassManager &PM = jitstate->getPM(locked); 267f049e07eb8930214941c72f8e4409df394de1567Nate Begeman PM.add(new TargetData(*TM.getTargetData())); 268f049e07eb8930214941c72f8e4409df394de1567Nate Begeman 269f049e07eb8930214941c72f8e4409df394de1567Nate Begeman // Turn the machine code intermediate representation into bytes in memory 270f049e07eb8930214941c72f8e4409df394de1567Nate Begeman // that may be executed. 271f049e07eb8930214941c72f8e4409df394de1567Nate Begeman if (TM.addPassesToEmitMachineCode(PM, *MCE, false /*fast*/)) { 272f049e07eb8930214941c72f8e4409df394de1567Nate Begeman cerr << "Target does not support machine code emission!\n"; 273f049e07eb8930214941c72f8e4409df394de1567Nate Begeman abort(); 274f049e07eb8930214941c72f8e4409df394de1567Nate Begeman } 275f049e07eb8930214941c72f8e4409df394de1567Nate Begeman 276f049e07eb8930214941c72f8e4409df394de1567Nate Begeman // Initialize passes. 277f049e07eb8930214941c72f8e4409df394de1567Nate Begeman PM.doInitialization(); 278f049e07eb8930214941c72f8e4409df394de1567Nate Begeman } 279f049e07eb8930214941c72f8e4409df394de1567Nate Begeman 280f049e07eb8930214941c72f8e4409df394de1567Nate Begeman ExecutionEngine::addModuleProvider(MP); 281f049e07eb8930214941c72f8e4409df394de1567Nate Begeman} 282f049e07eb8930214941c72f8e4409df394de1567Nate Begeman 283f049e07eb8930214941c72f8e4409df394de1567Nate Begeman/// removeModuleProvider - If we are removing the last ModuleProvider, 284f049e07eb8930214941c72f8e4409df394de1567Nate Begeman/// invalidate the jitstate since the PassManager it contains references a 285f049e07eb8930214941c72f8e4409df394de1567Nate Begeman/// released ModuleProvider. 286f049e07eb8930214941c72f8e4409df394de1567Nate BegemanModule *JIT::removeModuleProvider(ModuleProvider *MP, std::string *E) { 287f049e07eb8930214941c72f8e4409df394de1567Nate Begeman Module *result = ExecutionEngine::removeModuleProvider(MP, E); 288f049e07eb8930214941c72f8e4409df394de1567Nate Begeman 289f049e07eb8930214941c72f8e4409df394de1567Nate Begeman MutexGuard locked(lock); 290d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman 291d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman if (jitstate->getMP() == MP) { 292f049e07eb8930214941c72f8e4409df394de1567Nate Begeman delete jitstate; 293f049e07eb8930214941c72f8e4409df394de1567Nate Begeman jitstate = 0; 294f049e07eb8930214941c72f8e4409df394de1567Nate Begeman } 295f049e07eb8930214941c72f8e4409df394de1567Nate Begeman 296d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman if (!jitstate && !Modules.empty()) { 297d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman jitstate = new JITState(Modules[0]); 298d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman 299d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman FunctionPassManager &PM = jitstate->getPM(locked); 300d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman PM.add(new TargetData(*TM.getTargetData())); 301d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman 302d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman // Turn the machine code intermediate representation into bytes in memory 303d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman // that may be executed. 304d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman if (TM.addPassesToEmitMachineCode(PM, *MCE, false /*fast*/)) { 305d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman cerr << "Target does not support machine code emission!\n"; 306d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman abort(); 307d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman } 308d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman 309d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman // Initialize passes. 310d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman PM.doInitialization(); 311d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman } 312f049e07eb8930214941c72f8e4409df394de1567Nate Begeman return result; 313f049e07eb8930214941c72f8e4409df394de1567Nate Begeman} 314f049e07eb8930214941c72f8e4409df394de1567Nate Begeman 31560789e419e04c260e36af9a1add5ad316313e490Nate Begeman/// deleteModuleProvider - Remove a ModuleProvider from the list of modules, 31660789e419e04c260e36af9a1add5ad316313e490Nate Begeman/// and deletes the ModuleProvider and owned Module. Avoids materializing 31760789e419e04c260e36af9a1add5ad316313e490Nate Begeman/// the underlying module. 31860789e419e04c260e36af9a1add5ad316313e490Nate Begemanvoid JIT::deleteModuleProvider(ModuleProvider *MP, std::string *E) { 31960789e419e04c260e36af9a1add5ad316313e490Nate Begeman ExecutionEngine::deleteModuleProvider(MP, E); 32060789e419e04c260e36af9a1add5ad316313e490Nate Begeman 32160789e419e04c260e36af9a1add5ad316313e490Nate Begeman MutexGuard locked(lock); 322d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman 323d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman if (jitstate->getMP() == MP) { 32460789e419e04c260e36af9a1add5ad316313e490Nate Begeman delete jitstate; 32560789e419e04c260e36af9a1add5ad316313e490Nate Begeman jitstate = 0; 32660789e419e04c260e36af9a1add5ad316313e490Nate Begeman } 327d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman 328d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman if (!jitstate && !Modules.empty()) { 329d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman jitstate = new JITState(Modules[0]); 330d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman 331d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman FunctionPassManager &PM = jitstate->getPM(locked); 332d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman PM.add(new TargetData(*TM.getTargetData())); 333d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman 334d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman // Turn the machine code intermediate representation into bytes in memory 335d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman // that may be executed. 336d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman if (TM.addPassesToEmitMachineCode(PM, *MCE, false /*fast*/)) { 337d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman cerr << "Target does not support machine code emission!\n"; 338d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman abort(); 339d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman } 340d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman 341d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman // Initialize passes. 342d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman PM.doInitialization(); 343d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman } 34460789e419e04c260e36af9a1add5ad316313e490Nate Begeman} 34560789e419e04c260e36af9a1add5ad316313e490Nate Begeman 34670975eef572b9e132bbaade16ba9edb76f15f287Brian Gaeke/// run - Start execution with the specified function and arguments. 34705a1a306bcfba2b533dc1210d24924e5f3e9ed0eChris Lattner/// 348ff0f1bb32a439cf82cb09ee29544c894a2bfe877Chris LattnerGenericValue JIT::runFunction(Function *F, 349ff0f1bb32a439cf82cb09ee29544c894a2bfe877Chris Lattner const std::vector<GenericValue> &ArgValues) { 350b47130c580385a5a2c922c480a85438b2bb80293Chris Lattner assert(F && "Function *F was null at entry to run()"); 351b47130c580385a5a2c922c480a85438b2bb80293Chris Lattner 352b47130c580385a5a2c922c480a85438b2bb80293Chris Lattner void *FPtr = getPointerToFunction(F); 3537c45d7898bdfdc29a61a58b678e13ed41333ed51Chris Lattner assert(FPtr && "Pointer to fn's code was null after getPointerToFunction"); 354f7bedf447e080cb57c64d6f0cbf6fbeb9f4c596eChris Lattner const FunctionType *FTy = F->getFunctionType(); 355e5eab142a51373dd3bee758ea958575afbfce259Chris Lattner const Type *RetTy = FTy->getReturnType(); 356bd199fb1148b9e16c4e6f3d0ee386c2505a55b71Chris Lattner 35707ab52b6459f65b3e1c94d52321165688a6096aaDan Gohman assert((FTy->getNumParams() == ArgValues.size() || 35807ab52b6459f65b3e1c94d52321165688a6096aaDan Gohman (FTy->isVarArg() && FTy->getNumParams() <= ArgValues.size())) && 35907ab52b6459f65b3e1c94d52321165688a6096aaDan Gohman "Wrong number of arguments passed into function!"); 360e5eab142a51373dd3bee758ea958575afbfce259Chris Lattner assert(FTy->getNumParams() == ArgValues.size() && 361e5eab142a51373dd3bee758ea958575afbfce259Chris Lattner "This doesn't support passing arguments through varargs (yet)!"); 362e5eab142a51373dd3bee758ea958575afbfce259Chris Lattner 363ec8430270a9f1adbf9b790319a1d4781658359fdMisha Brukman // Handle some common cases first. These cases correspond to common `main' 364e5eab142a51373dd3bee758ea958575afbfce259Chris Lattner // prototypes. 36579e038a16d644868bd8d6e230b451c4cb8f8ff93Chris Lattner if (RetTy == Type::Int32Ty || RetTy == Type::VoidTy) { 366f7bedf447e080cb57c64d6f0cbf6fbeb9f4c596eChris Lattner switch (ArgValues.size()) { 367f7bedf447e080cb57c64d6f0cbf6fbeb9f4c596eChris Lattner case 3: 36879e038a16d644868bd8d6e230b451c4cb8f8ff93Chris Lattner if (FTy->getParamType(0) == Type::Int32Ty && 369f7bedf447e080cb57c64d6f0cbf6fbeb9f4c596eChris Lattner isa<PointerType>(FTy->getParamType(1)) && 370f7bedf447e080cb57c64d6f0cbf6fbeb9f4c596eChris Lattner isa<PointerType>(FTy->getParamType(2))) { 371f7bedf447e080cb57c64d6f0cbf6fbeb9f4c596eChris Lattner int (*PF)(int, char **, const char **) = 372870286aa33290c00e55ba479a60251c79f3a7911Chris Lattner (int(*)(int, char **, const char **))(intptr_t)FPtr; 373ec8430270a9f1adbf9b790319a1d4781658359fdMisha Brukman 374f7bedf447e080cb57c64d6f0cbf6fbeb9f4c596eChris Lattner // Call the function. 375e5eab142a51373dd3bee758ea958575afbfce259Chris Lattner GenericValue rv; 37638f6a15df69c271c3bebf648642041b31380e31aReid Spencer rv.IntVal = APInt(32, PF(ArgValues[0].IntVal.getZExtValue(), 37738f6a15df69c271c3bebf648642041b31380e31aReid Spencer (char **)GVTOP(ArgValues[1]), 37838f6a15df69c271c3bebf648642041b31380e31aReid Spencer (const char **)GVTOP(ArgValues[2]))); 379f7bedf447e080cb57c64d6f0cbf6fbeb9f4c596eChris Lattner return rv; 380f7bedf447e080cb57c64d6f0cbf6fbeb9f4c596eChris Lattner } 381f7bedf447e080cb57c64d6f0cbf6fbeb9f4c596eChris Lattner break; 382174f2264649d9ae062bdb0a038131c2836596be5Chris Lattner case 2: 38379e038a16d644868bd8d6e230b451c4cb8f8ff93Chris Lattner if (FTy->getParamType(0) == Type::Int32Ty && 384174f2264649d9ae062bdb0a038131c2836596be5Chris Lattner isa<PointerType>(FTy->getParamType(1))) { 385870286aa33290c00e55ba479a60251c79f3a7911Chris Lattner int (*PF)(int, char **) = (int(*)(int, char **))(intptr_t)FPtr; 386ec8430270a9f1adbf9b790319a1d4781658359fdMisha Brukman 387174f2264649d9ae062bdb0a038131c2836596be5Chris Lattner // Call the function. 388174f2264649d9ae062bdb0a038131c2836596be5Chris Lattner GenericValue rv; 38938f6a15df69c271c3bebf648642041b31380e31aReid Spencer rv.IntVal = APInt(32, PF(ArgValues[0].IntVal.getZExtValue(), 39038f6a15df69c271c3bebf648642041b31380e31aReid Spencer (char **)GVTOP(ArgValues[1]))); 391174f2264649d9ae062bdb0a038131c2836596be5Chris Lattner return rv; 392174f2264649d9ae062bdb0a038131c2836596be5Chris Lattner } 393174f2264649d9ae062bdb0a038131c2836596be5Chris Lattner break; 394f7bedf447e080cb57c64d6f0cbf6fbeb9f4c596eChris Lattner case 1: 395f7bedf447e080cb57c64d6f0cbf6fbeb9f4c596eChris Lattner if (FTy->getNumParams() == 1 && 39679e038a16d644868bd8d6e230b451c4cb8f8ff93Chris Lattner FTy->getParamType(0) == Type::Int32Ty) { 397e5eab142a51373dd3bee758ea958575afbfce259Chris Lattner GenericValue rv; 398870286aa33290c00e55ba479a60251c79f3a7911Chris Lattner int (*PF)(int) = (int(*)(int))(intptr_t)FPtr; 39938f6a15df69c271c3bebf648642041b31380e31aReid Spencer rv.IntVal = APInt(32, PF(ArgValues[0].IntVal.getZExtValue())); 400f7bedf447e080cb57c64d6f0cbf6fbeb9f4c596eChris Lattner return rv; 401f7bedf447e080cb57c64d6f0cbf6fbeb9f4c596eChris Lattner } 402f7bedf447e080cb57c64d6f0cbf6fbeb9f4c596eChris Lattner break; 403e5eab142a51373dd3bee758ea958575afbfce259Chris Lattner } 404e5eab142a51373dd3bee758ea958575afbfce259Chris Lattner } 405e5eab142a51373dd3bee758ea958575afbfce259Chris Lattner 406e5eab142a51373dd3bee758ea958575afbfce259Chris Lattner // Handle cases where no arguments are passed first. 407e5eab142a51373dd3bee758ea958575afbfce259Chris Lattner if (ArgValues.empty()) { 408e5eab142a51373dd3bee758ea958575afbfce259Chris Lattner GenericValue rv; 409e5eab142a51373dd3bee758ea958575afbfce259Chris Lattner switch (RetTy->getTypeID()) { 410e5eab142a51373dd3bee758ea958575afbfce259Chris Lattner default: assert(0 && "Unknown return type for function call!"); 411a54b7cbd452b3adb2f51346140d996b29c2cdb30Reid Spencer case Type::IntegerTyID: { 412a54b7cbd452b3adb2f51346140d996b29c2cdb30Reid Spencer unsigned BitWidth = cast<IntegerType>(RetTy)->getBitWidth(); 413a54b7cbd452b3adb2f51346140d996b29c2cdb30Reid Spencer if (BitWidth == 1) 41438f6a15df69c271c3bebf648642041b31380e31aReid Spencer rv.IntVal = APInt(BitWidth, ((bool(*)())(intptr_t)FPtr)()); 415a54b7cbd452b3adb2f51346140d996b29c2cdb30Reid Spencer else if (BitWidth <= 8) 41638f6a15df69c271c3bebf648642041b31380e31aReid Spencer rv.IntVal = APInt(BitWidth, ((char(*)())(intptr_t)FPtr)()); 417a54b7cbd452b3adb2f51346140d996b29c2cdb30Reid Spencer else if (BitWidth <= 16) 41838f6a15df69c271c3bebf648642041b31380e31aReid Spencer rv.IntVal = APInt(BitWidth, ((short(*)())(intptr_t)FPtr)()); 419a54b7cbd452b3adb2f51346140d996b29c2cdb30Reid Spencer else if (BitWidth <= 32) 42038f6a15df69c271c3bebf648642041b31380e31aReid Spencer rv.IntVal = APInt(BitWidth, ((int(*)())(intptr_t)FPtr)()); 421a54b7cbd452b3adb2f51346140d996b29c2cdb30Reid Spencer else if (BitWidth <= 64) 42238f6a15df69c271c3bebf648642041b31380e31aReid Spencer rv.IntVal = APInt(BitWidth, ((int64_t(*)())(intptr_t)FPtr)()); 423a54b7cbd452b3adb2f51346140d996b29c2cdb30Reid Spencer else 424a54b7cbd452b3adb2f51346140d996b29c2cdb30Reid Spencer assert(0 && "Integer types > 64 bits not supported"); 425e5eab142a51373dd3bee758ea958575afbfce259Chris Lattner return rv; 426a54b7cbd452b3adb2f51346140d996b29c2cdb30Reid Spencer } 427e5eab142a51373dd3bee758ea958575afbfce259Chris Lattner case Type::VoidTyID: 42838f6a15df69c271c3bebf648642041b31380e31aReid Spencer rv.IntVal = APInt(32, ((int(*)())(intptr_t)FPtr)()); 429e5eab142a51373dd3bee758ea958575afbfce259Chris Lattner return rv; 430e5eab142a51373dd3bee758ea958575afbfce259Chris Lattner case Type::FloatTyID: 431870286aa33290c00e55ba479a60251c79f3a7911Chris Lattner rv.FloatVal = ((float(*)())(intptr_t)FPtr)(); 432e5eab142a51373dd3bee758ea958575afbfce259Chris Lattner return rv; 433e5eab142a51373dd3bee758ea958575afbfce259Chris Lattner case Type::DoubleTyID: 434870286aa33290c00e55ba479a60251c79f3a7911Chris Lattner rv.DoubleVal = ((double(*)())(intptr_t)FPtr)(); 435d297aea5f24f2ad369162b8c1084cda4dcc839f0Chris Lattner return rv; 4361abac0d725374cb6e527d2a735a5272a4f7913faDale Johannesen case Type::X86_FP80TyID: 4371abac0d725374cb6e527d2a735a5272a4f7913faDale Johannesen case Type::FP128TyID: 4381abac0d725374cb6e527d2a735a5272a4f7913faDale Johannesen case Type::PPC_FP128TyID: 4391abac0d725374cb6e527d2a735a5272a4f7913faDale Johannesen assert(0 && "long double not supported yet"); 4401abac0d725374cb6e527d2a735a5272a4f7913faDale Johannesen return rv; 441e5eab142a51373dd3bee758ea958575afbfce259Chris Lattner case Type::PointerTyID: 442870286aa33290c00e55ba479a60251c79f3a7911Chris Lattner return PTOGV(((void*(*)())(intptr_t)FPtr)()); 443d297aea5f24f2ad369162b8c1084cda4dcc839f0Chris Lattner } 444ff0f1bb32a439cf82cb09ee29544c894a2bfe877Chris Lattner } 44570975eef572b9e132bbaade16ba9edb76f15f287Brian Gaeke 446cc22e9f406cf21e3a2036bf6628ee7a5c850d42cChris Lattner // Okay, this is not one of our quick and easy cases. Because we don't have a 447cc22e9f406cf21e3a2036bf6628ee7a5c850d42cChris Lattner // full FFI, we have to codegen a nullary stub function that just calls the 448cc22e9f406cf21e3a2036bf6628ee7a5c850d42cChris Lattner // function we are interested in, passing in constants for all of the 449cc22e9f406cf21e3a2036bf6628ee7a5c850d42cChris Lattner // arguments. Make this function and return. 450cc22e9f406cf21e3a2036bf6628ee7a5c850d42cChris Lattner 451cc22e9f406cf21e3a2036bf6628ee7a5c850d42cChris Lattner // First, create the function. 452cc22e9f406cf21e3a2036bf6628ee7a5c850d42cChris Lattner FunctionType *STy=FunctionType::get(RetTy, std::vector<const Type*>(), false); 453051a950000e21935165db56695e35bade668193bGabor Greif Function *Stub = Function::Create(STy, Function::InternalLinkage, "", 454051a950000e21935165db56695e35bade668193bGabor Greif F->getParent()); 455cc22e9f406cf21e3a2036bf6628ee7a5c850d42cChris Lattner 456cc22e9f406cf21e3a2036bf6628ee7a5c850d42cChris Lattner // Insert a basic block. 457051a950000e21935165db56695e35bade668193bGabor Greif BasicBlock *StubBB = BasicBlock::Create("", Stub); 458cc22e9f406cf21e3a2036bf6628ee7a5c850d42cChris Lattner 459cc22e9f406cf21e3a2036bf6628ee7a5c850d42cChris Lattner // Convert all of the GenericValue arguments over to constants. Note that we 460cc22e9f406cf21e3a2036bf6628ee7a5c850d42cChris Lattner // currently don't support varargs. 461990b849abc9481b8c7a482019cd0d95fe2f2a3eaChris Lattner SmallVector<Value*, 8> Args; 462cc22e9f406cf21e3a2036bf6628ee7a5c850d42cChris Lattner for (unsigned i = 0, e = ArgValues.size(); i != e; ++i) { 463cc22e9f406cf21e3a2036bf6628ee7a5c850d42cChris Lattner Constant *C = 0; 464cc22e9f406cf21e3a2036bf6628ee7a5c850d42cChris Lattner const Type *ArgTy = FTy->getParamType(i); 465cc22e9f406cf21e3a2036bf6628ee7a5c850d42cChris Lattner const GenericValue &AV = ArgValues[i]; 466cc22e9f406cf21e3a2036bf6628ee7a5c850d42cChris Lattner switch (ArgTy->getTypeID()) { 467cc22e9f406cf21e3a2036bf6628ee7a5c850d42cChris Lattner default: assert(0 && "Unknown argument type for function call!"); 46802a260aa11a2e1b2c14335274d3c42ca3f3eabc0Chris Lattner case Type::IntegerTyID: 46902a260aa11a2e1b2c14335274d3c42ca3f3eabc0Chris Lattner C = ConstantInt::get(AV.IntVal); 47002a260aa11a2e1b2c14335274d3c42ca3f3eabc0Chris Lattner break; 47102a260aa11a2e1b2c14335274d3c42ca3f3eabc0Chris Lattner case Type::FloatTyID: 47202a260aa11a2e1b2c14335274d3c42ca3f3eabc0Chris Lattner C = ConstantFP::get(APFloat(AV.FloatVal)); 47302a260aa11a2e1b2c14335274d3c42ca3f3eabc0Chris Lattner break; 47402a260aa11a2e1b2c14335274d3c42ca3f3eabc0Chris Lattner case Type::DoubleTyID: 47502a260aa11a2e1b2c14335274d3c42ca3f3eabc0Chris Lattner C = ConstantFP::get(APFloat(AV.DoubleVal)); 47602a260aa11a2e1b2c14335274d3c42ca3f3eabc0Chris Lattner break; 4771abac0d725374cb6e527d2a735a5272a4f7913faDale Johannesen case Type::PPC_FP128TyID: 4781abac0d725374cb6e527d2a735a5272a4f7913faDale Johannesen case Type::X86_FP80TyID: 47902a260aa11a2e1b2c14335274d3c42ca3f3eabc0Chris Lattner case Type::FP128TyID: 48002a260aa11a2e1b2c14335274d3c42ca3f3eabc0Chris Lattner C = ConstantFP::get(APFloat(AV.IntVal)); 48102a260aa11a2e1b2c14335274d3c42ca3f3eabc0Chris Lattner break; 482cc22e9f406cf21e3a2036bf6628ee7a5c850d42cChris Lattner case Type::PointerTyID: 483cc22e9f406cf21e3a2036bf6628ee7a5c850d42cChris Lattner void *ArgPtr = GVTOP(AV); 48402a260aa11a2e1b2c14335274d3c42ca3f3eabc0Chris Lattner if (sizeof(void*) == 4) 485e49661bdf5b7a913d4e368cf511381e524ae403aReid Spencer C = ConstantInt::get(Type::Int32Ty, (int)(intptr_t)ArgPtr); 48602a260aa11a2e1b2c14335274d3c42ca3f3eabc0Chris Lattner else 487e49661bdf5b7a913d4e368cf511381e524ae403aReid Spencer C = ConstantInt::get(Type::Int64Ty, (intptr_t)ArgPtr); 48815f46d6c280cc91be70c60ed181931fbe0088652Reid Spencer C = ConstantExpr::getIntToPtr(C, ArgTy); // Cast the integer to pointer 489cc22e9f406cf21e3a2036bf6628ee7a5c850d42cChris Lattner break; 490cc22e9f406cf21e3a2036bf6628ee7a5c850d42cChris Lattner } 491cc22e9f406cf21e3a2036bf6628ee7a5c850d42cChris Lattner Args.push_back(C); 492cc22e9f406cf21e3a2036bf6628ee7a5c850d42cChris Lattner } 493cc22e9f406cf21e3a2036bf6628ee7a5c850d42cChris Lattner 494b1dbcd886a4b5597a839f299054b78b33fb2d6dfGabor Greif CallInst *TheCall = CallInst::Create(F, Args.begin(), Args.end(), 495b1dbcd886a4b5597a839f299054b78b33fb2d6dfGabor Greif "", StubBB); 496cdfc51ffe3eda17a611fe2aaed1a2e6650d3d203Chris Lattner TheCall->setCallingConv(F->getCallingConv()); 497a471e045b7cef5da428bdada4a362a4be671ef0bChris Lattner TheCall->setTailCall(); 498cc22e9f406cf21e3a2036bf6628ee7a5c850d42cChris Lattner if (TheCall->getType() != Type::VoidTy) 499b1dbcd886a4b5597a839f299054b78b33fb2d6dfGabor Greif ReturnInst::Create(TheCall, StubBB); // Return result of the call. 500cc22e9f406cf21e3a2036bf6628ee7a5c850d42cChris Lattner else 501b1dbcd886a4b5597a839f299054b78b33fb2d6dfGabor Greif ReturnInst::Create(StubBB); // Just return void. 502cc22e9f406cf21e3a2036bf6628ee7a5c850d42cChris Lattner 503cc22e9f406cf21e3a2036bf6628ee7a5c850d42cChris Lattner // Finally, return the value returned by our nullary stub function. 504cc22e9f406cf21e3a2036bf6628ee7a5c850d42cChris Lattner return runFunction(Stub, std::vector<GenericValue>()); 505bd199fb1148b9e16c4e6f3d0ee386c2505a55b71Chris Lattner} 5064d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner 5074d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner/// runJITOnFunction - Run the FunctionPassManager full of 5084d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner/// just-in-time compilation passes on F, hopefully filling in 5094d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner/// GlobalAddress[F] with the address of F's machine code. 5104d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner/// 5114d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattnervoid JIT::runJITOnFunction(Function *F) { 512ee448630bdf7eb6037fe2c50518d32010c433ca3Reid Spencer MutexGuard locked(lock); 51321afcda54479602c2936946731a3f1ee8e5d2322Dan Gohman runJITOnFunctionUnlocked(F, locked); 51421afcda54479602c2936946731a3f1ee8e5d2322Dan Gohman} 51521afcda54479602c2936946731a3f1ee8e5d2322Dan Gohman 51621afcda54479602c2936946731a3f1ee8e5d2322Dan Gohmanvoid JIT::runJITOnFunctionUnlocked(Function *F, const MutexGuard &locked) { 51721afcda54479602c2936946731a3f1ee8e5d2322Dan Gohman static bool isAlreadyCodeGenerating = false; 51817f218e001862785c5ba5974a6374f2f7bc29ac0Chris Lattner assert(!isAlreadyCodeGenerating && "Error: Recursive compilation detected!"); 5194d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner 5204d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner // JIT the function 5214d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner isAlreadyCodeGenerating = true; 522f049e07eb8930214941c72f8e4409df394de1567Nate Begeman jitstate->getPM(locked).run(*F); 5234d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner isAlreadyCodeGenerating = false; 524c07ed1387503d25c0b93fcf617f69329d73fc589Chris Lattner 525d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman // If the function referred to another function that had not yet been 526d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman // read from bitcode, but we are jitting non-lazily, emit it now. 527d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman while (!jitstate->getPendingFunctions(locked).empty()) { 528d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman Function *PF = jitstate->getPendingFunctions(locked).back(); 529d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman jitstate->getPendingFunctions(locked).pop_back(); 530d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman 531d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman // JIT the function 532d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman isAlreadyCodeGenerating = true; 533d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman jitstate->getPM(locked).run(*PF); 534d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman isAlreadyCodeGenerating = false; 535d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman 536d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman // Now that the function has been jitted, ask the JITEmitter to rewrite 537d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman // the stub with real address of the function. 538d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman updateFunctionStub(PF); 539c07ed1387503d25c0b93fcf617f69329d73fc589Chris Lattner } 540d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman 541d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman // If the JIT is configured to emit info so that dlsym can be used to 542d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman // rewrite stubs to external globals, do so now. 543d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman if (areDlsymStubsEnabled() && isLazyCompilationDisabled()) 544d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman updateDlsymStubTable(); 5454d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner} 5464d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner 5474d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner/// getPointerToFunction - This method is used to get the address of the 5484d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner/// specified function, compiling it if neccesary. 5494d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner/// 5504d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattnervoid *JIT::getPointerToFunction(Function *F) { 551ee448630bdf7eb6037fe2c50518d32010c433ca3Reid Spencer 552c07ed1387503d25c0b93fcf617f69329d73fc589Chris Lattner if (void *Addr = getPointerToGlobalIfAvailable(F)) 553c07ed1387503d25c0b93fcf617f69329d73fc589Chris Lattner return Addr; // Check if function already code gen'd 5544d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner 555a3ac0c105d26f8535d03031db7e97274b3ff8159Dan Gohman MutexGuard locked(lock); 556a3ac0c105d26f8535d03031db7e97274b3ff8159Dan Gohman 557fe854034677f59baca1e38075e71f6efca247a03Chris Lattner // Make sure we read in the function if it exists in this Module. 558a99be51bf5cdac1438069d4b01766c47704961c8Gabor Greif if (F->hasNotBeenReadFromBitcode()) { 559fe854034677f59baca1e38075e71f6efca247a03Chris Lattner // Determine the module provider this function is provided by. 560fe854034677f59baca1e38075e71f6efca247a03Chris Lattner Module *M = F->getParent(); 561fe854034677f59baca1e38075e71f6efca247a03Chris Lattner ModuleProvider *MP = 0; 562fe854034677f59baca1e38075e71f6efca247a03Chris Lattner for (unsigned i = 0, e = Modules.size(); i != e; ++i) { 563fe854034677f59baca1e38075e71f6efca247a03Chris Lattner if (Modules[i]->getModule() == M) { 564fe854034677f59baca1e38075e71f6efca247a03Chris Lattner MP = Modules[i]; 565fe854034677f59baca1e38075e71f6efca247a03Chris Lattner break; 566fe854034677f59baca1e38075e71f6efca247a03Chris Lattner } 567fe854034677f59baca1e38075e71f6efca247a03Chris Lattner } 568fe854034677f59baca1e38075e71f6efca247a03Chris Lattner assert(MP && "Function isn't in a module we know about!"); 569fe854034677f59baca1e38075e71f6efca247a03Chris Lattner 5705c72a3ae106d8d1dd6aa7e573948dac4102aca7bChris Lattner std::string ErrorMsg; 5715c72a3ae106d8d1dd6aa7e573948dac4102aca7bChris Lattner if (MP->materializeFunction(F, &ErrorMsg)) { 572832171cb9724d2d31c8dfb73172e2be8f6dd13eeBill Wendling cerr << "Error reading function '" << F->getName() 573a99be51bf5cdac1438069d4b01766c47704961c8Gabor Greif << "' from bitcode file: " << ErrorMsg << "\n"; 5740050ef831912eea2377c815bc59c09ed828f2684Chris Lattner abort(); 5750050ef831912eea2377c815bc59c09ed828f2684Chris Lattner } 5761c341c8462a208ccc5ba4b4e030cdc989ce38818Mon P Wang 57769f9378675b23135043d93aa58300fed3ec41cbfDan Gohman // Now retry to get the address. 57869f9378675b23135043d93aa58300fed3ec41cbfDan Gohman if (void *Addr = getPointerToGlobalIfAvailable(F)) 57969f9378675b23135043d93aa58300fed3ec41cbfDan Gohman return Addr; 580fd7d99120b394e7aa4cf0b670f7b783a61dec3a1Nicolas Geoffray } 5814d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner 5825cbf985dcbc89fba3208e7baf8b6f488b06d3ec9Reid Spencer if (F->isDeclaration()) { 58369f9378675b23135043d93aa58300fed3ec41cbfDan Gohman bool AbortOnFailure = F->getLinkage() != GlobalValue::ExternalWeakLinkage; 58469f9378675b23135043d93aa58300fed3ec41cbfDan Gohman void *Addr = getPointerToNamedFunction(F->getName(), AbortOnFailure); 585c07ed1387503d25c0b93fcf617f69329d73fc589Chris Lattner addGlobalMapping(F, Addr); 586c07ed1387503d25c0b93fcf617f69329d73fc589Chris Lattner return Addr; 587c07ed1387503d25c0b93fcf617f69329d73fc589Chris Lattner } 5884d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner 58921afcda54479602c2936946731a3f1ee8e5d2322Dan Gohman runJITOnFunctionUnlocked(F, locked); 590c07ed1387503d25c0b93fcf617f69329d73fc589Chris Lattner 591c07ed1387503d25c0b93fcf617f69329d73fc589Chris Lattner void *Addr = getPointerToGlobalIfAvailable(F); 5924d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner assert(Addr && "Code generation didn't add function to GlobalAddress table!"); 5934d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner return Addr; 5944d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner} 5954d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner 596c07ed1387503d25c0b93fcf617f69329d73fc589Chris Lattner/// getOrEmitGlobalVariable - Return the address of the specified global 597c07ed1387503d25c0b93fcf617f69329d73fc589Chris Lattner/// variable, possibly emitting it to memory if needed. This is used by the 598c07ed1387503d25c0b93fcf617f69329d73fc589Chris Lattner/// Emitter. 599c07ed1387503d25c0b93fcf617f69329d73fc589Chris Lattnervoid *JIT::getOrEmitGlobalVariable(const GlobalVariable *GV) { 600ee448630bdf7eb6037fe2c50518d32010c433ca3Reid Spencer MutexGuard locked(lock); 601ee448630bdf7eb6037fe2c50518d32010c433ca3Reid Spencer 602c07ed1387503d25c0b93fcf617f69329d73fc589Chris Lattner void *Ptr = getPointerToGlobalIfAvailable(GV); 603c07ed1387503d25c0b93fcf617f69329d73fc589Chris Lattner if (Ptr) return Ptr; 604c07ed1387503d25c0b93fcf617f69329d73fc589Chris Lattner 605c07ed1387503d25c0b93fcf617f69329d73fc589Chris Lattner // If the global is external, just remember the address. 6065cbf985dcbc89fba3208e7baf8b6f488b06d3ec9Reid Spencer if (GV->isDeclaration()) { 6073b30a6e92d1da79674451879d4112a8f83cc12a4Anton Korobeynikov#if HAVE___DSO_HANDLE 6085f42c550305814f916207b9604b92fbd258e8eafEvan Cheng if (GV->getName() == "__dso_handle") 6095f42c550305814f916207b9604b92fbd258e8eafEvan Cheng return (void*)&__dso_handle; 610b82ab94e20bd48ac149746864e0d5b1653bdcf3eEvan Cheng#endif 611df5a37efc997288da520ff4889443e3560d95387Reid Spencer Ptr = sys::DynamicLibrary::SearchForAddressOfSymbol(GV->getName().c_str()); 61266941988de6a295649b33f4c2b0f36a094b2244dNate Begeman if (Ptr == 0 && !areDlsymStubsEnabled()) { 613832171cb9724d2d31c8dfb73172e2be8f6dd13eeBill Wendling cerr << "Could not resolve external global address: " 614832171cb9724d2d31c8dfb73172e2be8f6dd13eeBill Wendling << GV->getName() << "\n"; 615c07ed1387503d25c0b93fcf617f69329d73fc589Chris Lattner abort(); 616c07ed1387503d25c0b93fcf617f69329d73fc589Chris Lattner } 61766941988de6a295649b33f4c2b0f36a094b2244dNate Begeman addGlobalMapping(GV, Ptr); 618c07ed1387503d25c0b93fcf617f69329d73fc589Chris Lattner } else { 6194d544a2c807756af6bffc71f1967f22e8045d02eEvan Cheng // GlobalVariable's which are not "constant" will cause trouble in a server 6204d544a2c807756af6bffc71f1967f22e8045d02eEvan Cheng // situation. It's returned in the same block of memory as code which may 6214d544a2c807756af6bffc71f1967f22e8045d02eEvan Cheng // not be writable. 6224d544a2c807756af6bffc71f1967f22e8045d02eEvan Cheng if (isGVCompilationDisabled() && !GV->isConstant()) { 62377f86ad08775e0ed2a704ef09ffff3dbd6e04583Evan Cheng cerr << "Compilation of non-internal GlobalValue is disabled!\n"; 624446531e7bb4355117b070493ca8e81e4b123ef18Evan Cheng abort(); 625446531e7bb4355117b070493ca8e81e4b123ef18Evan Cheng } 626dd947ea3c5e020c33c58a31939561265b980a3adDale Johannesen // If the global hasn't been emitted to memory yet, allocate space and 627dd947ea3c5e020c33c58a31939561265b980a3adDale Johannesen // emit it into memory. It goes in the same array as the generated 628dd947ea3c5e020c33c58a31939561265b980a3adDale Johannesen // code, jump tables, etc. 629f5d438c1f0e0c0ed44475ab69f03d86a3c818c60Chris Lattner const Type *GlobalType = GV->getType()->getElementType(); 630ceb4d1aecb9deffe59b3dcdc9a783ffde8477be9Duncan Sands size_t S = getTargetData()->getTypePaddedSize(GlobalType); 631d102593b425da27fa96359300ff0e3d547d0ac8dDuncan Sands size_t A = getTargetData()->getPreferredAlignment(GV); 63246fa139e26be6ebc00be2fb45820c2560dd22a32Nicolas Geoffray if (GV->isThreadLocal()) { 63346fa139e26be6ebc00be2fb45820c2560dd22a32Nicolas Geoffray MutexGuard locked(lock); 63446fa139e26be6ebc00be2fb45820c2560dd22a32Nicolas Geoffray Ptr = TJI.allocateThreadLocalMemory(S); 635b0b53491ef32b85bd90c8590faeb8a3fb4b17a95Evan Cheng } else if (TJI.allocateSeparateGVMemory()) { 636b0b53491ef32b85bd90c8590faeb8a3fb4b17a95Evan Cheng if (A <= 8) { 637b0b53491ef32b85bd90c8590faeb8a3fb4b17a95Evan Cheng Ptr = malloc(S); 638b0b53491ef32b85bd90c8590faeb8a3fb4b17a95Evan Cheng } else { 639b0b53491ef32b85bd90c8590faeb8a3fb4b17a95Evan Cheng // Allocate S+A bytes of memory, then use an aligned pointer within that 640b0b53491ef32b85bd90c8590faeb8a3fb4b17a95Evan Cheng // space. 641b0b53491ef32b85bd90c8590faeb8a3fb4b17a95Evan Cheng Ptr = malloc(S+A); 642b0b53491ef32b85bd90c8590faeb8a3fb4b17a95Evan Cheng unsigned MisAligned = ((intptr_t)Ptr & (A-1)); 643b0b53491ef32b85bd90c8590faeb8a3fb4b17a95Evan Cheng Ptr = (char*)Ptr + (MisAligned ? (A-MisAligned) : 0); 644b0b53491ef32b85bd90c8590faeb8a3fb4b17a95Evan Cheng } 64546fa139e26be6ebc00be2fb45820c2560dd22a32Nicolas Geoffray } else { 64646fa139e26be6ebc00be2fb45820c2560dd22a32Nicolas Geoffray Ptr = MCE->allocateSpace(S, A); 64746fa139e26be6ebc00be2fb45820c2560dd22a32Nicolas Geoffray } 648dd947ea3c5e020c33c58a31939561265b980a3adDale Johannesen addGlobalMapping(GV, Ptr); 649dd947ea3c5e020c33c58a31939561265b980a3adDale Johannesen EmitGlobalVariable(GV); 650c07ed1387503d25c0b93fcf617f69329d73fc589Chris Lattner } 651c07ed1387503d25c0b93fcf617f69329d73fc589Chris Lattner return Ptr; 652c07ed1387503d25c0b93fcf617f69329d73fc589Chris Lattner} 653c07ed1387503d25c0b93fcf617f69329d73fc589Chris Lattner 6544d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner/// recompileAndRelinkFunction - This method is used to force a function 6554d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner/// which has already been compiled, to be compiled again, possibly 6564d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner/// after it has been modified. Then the entry to the old copy is overwritten 6574d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner/// with a branch to the new copy. If there was no old copy, this acts 6584d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner/// just like JIT::getPointerToFunction(). 6594d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner/// 6604d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattnervoid *JIT::recompileAndRelinkFunction(Function *F) { 661c07ed1387503d25c0b93fcf617f69329d73fc589Chris Lattner void *OldAddr = getPointerToGlobalIfAvailable(F); 6624d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner 663c07ed1387503d25c0b93fcf617f69329d73fc589Chris Lattner // If it's not already compiled there is no reason to patch it up. 664c07ed1387503d25c0b93fcf617f69329d73fc589Chris Lattner if (OldAddr == 0) { return getPointerToFunction(F); } 6654d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner 666c07ed1387503d25c0b93fcf617f69329d73fc589Chris Lattner // Delete the old function mapping. 667c07ed1387503d25c0b93fcf617f69329d73fc589Chris Lattner addGlobalMapping(F, 0); 668c07ed1387503d25c0b93fcf617f69329d73fc589Chris Lattner 669c07ed1387503d25c0b93fcf617f69329d73fc589Chris Lattner // Recodegen the function 6704d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner runJITOnFunction(F); 671c07ed1387503d25c0b93fcf617f69329d73fc589Chris Lattner 672c07ed1387503d25c0b93fcf617f69329d73fc589Chris Lattner // Update state, forward the old function to the new function. 673c07ed1387503d25c0b93fcf617f69329d73fc589Chris Lattner void *Addr = getPointerToGlobalIfAvailable(F); 6744d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner assert(Addr && "Code generation didn't add function to GlobalAddress table!"); 6754d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner TJI.replaceMachineCodeForFunction(OldAddr, Addr); 6764d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner return Addr; 6774d326fa9bea5b80147edf14d1521fc41ce315275Chris Lattner} 678895eddfad43f848d5accce1789aa80be0db459d3Misha Brukman 67946fa139e26be6ebc00be2fb45820c2560dd22a32Nicolas Geoffray/// getMemoryForGV - This method abstracts memory allocation of global 68046fa139e26be6ebc00be2fb45820c2560dd22a32Nicolas Geoffray/// variable so that the JIT can allocate thread local variables depending 68146fa139e26be6ebc00be2fb45820c2560dd22a32Nicolas Geoffray/// on the target. 68246fa139e26be6ebc00be2fb45820c2560dd22a32Nicolas Geoffray/// 68346fa139e26be6ebc00be2fb45820c2560dd22a32Nicolas Geoffraychar* JIT::getMemoryForGV(const GlobalVariable* GV) { 68446fa139e26be6ebc00be2fb45820c2560dd22a32Nicolas Geoffray const Type *ElTy = GV->getType()->getElementType(); 685ceb4d1aecb9deffe59b3dcdc9a783ffde8477be9Duncan Sands size_t GVSize = (size_t)getTargetData()->getTypePaddedSize(ElTy); 68646fa139e26be6ebc00be2fb45820c2560dd22a32Nicolas Geoffray if (GV->isThreadLocal()) { 68746fa139e26be6ebc00be2fb45820c2560dd22a32Nicolas Geoffray MutexGuard locked(lock); 68846fa139e26be6ebc00be2fb45820c2560dd22a32Nicolas Geoffray return TJI.allocateThreadLocalMemory(GVSize); 68946fa139e26be6ebc00be2fb45820c2560dd22a32Nicolas Geoffray } else { 69046fa139e26be6ebc00be2fb45820c2560dd22a32Nicolas Geoffray return new char[GVSize]; 69146fa139e26be6ebc00be2fb45820c2560dd22a32Nicolas Geoffray } 69246fa139e26be6ebc00be2fb45820c2560dd22a32Nicolas Geoffray} 693d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman 694d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begemanvoid JIT::addPendingFunction(Function *F) { 695d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman MutexGuard locked(lock); 696d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman jitstate->getPendingFunctions(locked).push_back(F); 697d6b7a242d345fd79a337afd384bb586c5619cfe7Nate Begeman} 698