ExecutionEngine.h revision 502f20b17ede40de84503010b7699b328a4f2867
1bd199fb1148b9e16c4e6f3d0ee386c2505a55b71Chris Lattner//===- ExecutionEngine.h - Abstract Execution Engine Interface --*- C++ -*-===// 2ea61c358720aa6c7a159d51658b34276316aa841Misha Brukman// 36fbcc26f1460eaee4e0eb8b426fc1ff0c7af11beJohn Criswell// The LLVM Compiler Infrastructure 46fbcc26f1460eaee4e0eb8b426fc1ff0c7af11beJohn Criswell// 57ed47a13356daed2a34cd2209a31f92552e3bdd8Chris Lattner// This file is distributed under the University of Illinois Open Source 67ed47a13356daed2a34cd2209a31f92552e3bdd8Chris Lattner// License. See LICENSE.TXT for details. 7ea61c358720aa6c7a159d51658b34276316aa841Misha Brukman// 86fbcc26f1460eaee4e0eb8b426fc1ff0c7af11beJohn Criswell//===----------------------------------------------------------------------===// 9bd199fb1148b9e16c4e6f3d0ee386c2505a55b71Chris Lattner// 10bd199fb1148b9e16c4e6f3d0ee386c2505a55b71Chris Lattner// This file defines the abstract interface that implements execution support 11bd199fb1148b9e16c4e6f3d0ee386c2505a55b71Chris Lattner// for LLVM. 12bd199fb1148b9e16c4e6f3d0ee386c2505a55b71Chris Lattner// 13bd199fb1148b9e16c4e6f3d0ee386c2505a55b71Chris Lattner//===----------------------------------------------------------------------===// 14bd199fb1148b9e16c4e6f3d0ee386c2505a55b71Chris Lattner 159f2f142d255bc96f109dd5c6524a485937b1f3a1Chris Lattner#ifndef LLVM_EXECUTION_ENGINE_H 169f2f142d255bc96f109dd5c6524a485937b1f3a1Chris Lattner#define LLVM_EXECUTION_ENGINE_H 17bd199fb1148b9e16c4e6f3d0ee386c2505a55b71Chris Lattner 18bd199fb1148b9e16c4e6f3d0ee386c2505a55b71Chris Lattner#include <vector> 19bd199fb1148b9e16c4e6f3d0ee386c2505a55b71Chris Lattner#include <map> 202e99791a1ed49f11a2825a9a7590742e1ddc110aChris Lattner#include <cassert> 2120aa474f8fbebde588edc101b90e834df28ce4ceAlkis Evlogimenos#include <string> 22683d1bb712d8f8fc2d727a160da029c9cf40a423Chris Lattner#include "llvm/System/Mutex.h" 23fe854034677f59baca1e38075e71f6efca247a03Chris Lattner#include "llvm/ADT/SmallVector.h" 24d0fde30ce850b78371fd1386338350591f9ff494Brian Gaeke 25d0fde30ce850b78371fd1386338350591f9ff494Brian Gaekenamespace llvm { 26d0fde30ce850b78371fd1386338350591f9ff494Brian Gaeke 279d87eb19be82b28d288e38eab3bbe145060a0701Reid Spencerstruct GenericValue; 28bd199fb1148b9e16c4e6f3d0ee386c2505a55b71Chris Lattnerclass Constant; 29bd199fb1148b9e16c4e6f3d0ee386c2505a55b71Chris Lattnerclass Function; 303ddc05bdde6ed65f93340ea467d362e80c0ceb9cChris Lattnerclass GlobalVariable; 31b6c54ed8f50a351989993a5ef88507abc6d63e2dMisha Brukmanclass GlobalValue; 32bd199fb1148b9e16c4e6f3d0ee386c2505a55b71Chris Lattnerclass Module; 337034adbce2fc7e761d745dbf586167380a69ee1aMisha Brukmanclass ModuleProvider; 34bd199fb1148b9e16c4e6f3d0ee386c2505a55b71Chris Lattnerclass TargetData; 35b6c54ed8f50a351989993a5ef88507abc6d63e2dMisha Brukmanclass Type; 36683d1bb712d8f8fc2d727a160da029c9cf40a423Chris Lattnerclass MutexGuard; 379f2f142d255bc96f109dd5c6524a485937b1f3a1Chris Lattnerclass JITMemoryManager; 38bd199fb1148b9e16c4e6f3d0ee386c2505a55b71Chris Lattner 39ee448630bdf7eb6037fe2c50518d32010c433ca3Reid Spencerclass ExecutionEngineState { 40ee448630bdf7eb6037fe2c50518d32010c433ca3Reid Spencerprivate: 41c8a07d7378699b8d11ce2a1549b984d84706da19Chris Lattner /// GlobalAddressMap - A mapping between LLVM global values and their 42c8a07d7378699b8d11ce2a1549b984d84706da19Chris Lattner /// actualized version... 43c8a07d7378699b8d11ce2a1549b984d84706da19Chris Lattner std::map<const GlobalValue*, void *> GlobalAddressMap; 44c8a07d7378699b8d11ce2a1549b984d84706da19Chris Lattner 45c8a07d7378699b8d11ce2a1549b984d84706da19Chris Lattner /// GlobalAddressReverseMap - This is the reverse mapping of GlobalAddressMap, 46c8a07d7378699b8d11ce2a1549b984d84706da19Chris Lattner /// used to convert raw addresses into the LLVM global value that is emitted 47c8a07d7378699b8d11ce2a1549b984d84706da19Chris Lattner /// at the address. This map is not computed unless getGlobalValueAtAddress 48c8a07d7378699b8d11ce2a1549b984d84706da19Chris Lattner /// is called at some point. 49c8a07d7378699b8d11ce2a1549b984d84706da19Chris Lattner std::map<void *, const GlobalValue*> GlobalAddressReverseMap; 50ee448630bdf7eb6037fe2c50518d32010c433ca3Reid Spencer 51ee448630bdf7eb6037fe2c50518d32010c433ca3Reid Spencerpublic: 52765c93cefda367d8e5a8e0afcd610a7e15bbd987Chris Lattner std::map<const GlobalValue*, void *> & 5313d57320bd212483463d4f8992d5787b29eda5dfBill Wendling getGlobalAddressMap(const MutexGuard &) { 54ee448630bdf7eb6037fe2c50518d32010c433ca3Reid Spencer return GlobalAddressMap; 55ee448630bdf7eb6037fe2c50518d32010c433ca3Reid Spencer } 56ee448630bdf7eb6037fe2c50518d32010c433ca3Reid Spencer 57765c93cefda367d8e5a8e0afcd610a7e15bbd987Chris Lattner std::map<void*, const GlobalValue*> & 5813d57320bd212483463d4f8992d5787b29eda5dfBill Wendling getGlobalAddressReverseMap(const MutexGuard &) { 59ee448630bdf7eb6037fe2c50518d32010c433ca3Reid Spencer return GlobalAddressReverseMap; 60ee448630bdf7eb6037fe2c50518d32010c433ca3Reid Spencer } 61ee448630bdf7eb6037fe2c50518d32010c433ca3Reid Spencer}; 62ee448630bdf7eb6037fe2c50518d32010c433ca3Reid Spencer 63ee448630bdf7eb6037fe2c50518d32010c433ca3Reid Spencer 64ee448630bdf7eb6037fe2c50518d32010c433ca3Reid Spencerclass ExecutionEngine { 65ee448630bdf7eb6037fe2c50518d32010c433ca3Reid Spencer const TargetData *TD; 66ee448630bdf7eb6037fe2c50518d32010c433ca3Reid Spencer ExecutionEngineState state; 671c1a44699049cf56713a46ccaef7c747e4a888a3Chris Lattner bool LazyCompilationDisabled; 68e846db667529eeeae531ce3b7382e18888d1eba0Chris Lattner bool SymbolSearchingDisabled; 69d958a5a9feea7239a73c2068f43f237db550f46eChris Lattner 701514b5b334c72e1e190fe1ce2bce7bf7d8a91c1aChris Lattnerprotected: 71fe854034677f59baca1e38075e71f6efca247a03Chris Lattner /// Modules - This is a list of ModuleProvider's that we are JIT'ing from. We 72fe854034677f59baca1e38075e71f6efca247a03Chris Lattner /// use a smallvector to optimize for the case where there is only one module. 73fe854034677f59baca1e38075e71f6efca247a03Chris Lattner SmallVector<ModuleProvider*, 1> Modules; 74fe854034677f59baca1e38075e71f6efca247a03Chris Lattner 75a69571c7991813c93cba64e88eced6899ce93d81Owen Anderson void setTargetData(const TargetData *td) { 76a69571c7991813c93cba64e88eced6899ce93d81Owen Anderson TD = td; 77bd199fb1148b9e16c4e6f3d0ee386c2505a55b71Chris Lattner } 78b6c54ed8f50a351989993a5ef88507abc6d63e2dMisha Brukman 79765c93cefda367d8e5a8e0afcd610a7e15bbd987Chris Lattner // To avoid having libexecutionengine depend on the JIT and interpreter 80765c93cefda367d8e5a8e0afcd610a7e15bbd987Chris Lattner // libraries, the JIT and Interpreter set these functions to ctor pointers 81765c93cefda367d8e5a8e0afcd610a7e15bbd987Chris Lattner // at startup time if they are linked in. 82502f20b17ede40de84503010b7699b328a4f2867Evan Cheng typedef ExecutionEngine *(*EECtorFn)(ModuleProvider*, std::string*, 83502f20b17ede40de84503010b7699b328a4f2867Evan Cheng bool Fast); 84765c93cefda367d8e5a8e0afcd610a7e15bbd987Chris Lattner static EECtorFn JITCtor, InterpCtor; 85d958a5a9feea7239a73c2068f43f237db550f46eChris Lattner 86d958a5a9feea7239a73c2068f43f237db550f46eChris Lattner /// LazyFunctionCreator - If an unknown function is needed, this function 87d958a5a9feea7239a73c2068f43f237db550f46eChris Lattner /// pointer is invoked to create it. If this returns null, the JIT will abort. 88d958a5a9feea7239a73c2068f43f237db550f46eChris Lattner void* (*LazyFunctionCreator)(const std::string &); 89d958a5a9feea7239a73c2068f43f237db550f46eChris Lattner 90afe6c2b001a924cd74bd0aacfed5984d9af004b0Nicolas Geoffray /// ExceptionTableRegister - If Exception Handling is set, the JIT will 91afe6c2b001a924cd74bd0aacfed5984d9af004b0Nicolas Geoffray /// register dwarf tables with this function 92afe6c2b001a924cd74bd0aacfed5984d9af004b0Nicolas Geoffray typedef void (*EERegisterFn)(void*); 93afe6c2b001a924cd74bd0aacfed5984d9af004b0Nicolas Geoffray static EERegisterFn ExceptionTableRegister; 94afe6c2b001a924cd74bd0aacfed5984d9af004b0Nicolas Geoffray 95bd199fb1148b9e16c4e6f3d0ee386c2505a55b71Chris Lattnerpublic: 96765c93cefda367d8e5a8e0afcd610a7e15bbd987Chris Lattner /// lock - This lock is protects the ExecutionEngine, JIT, JITResolver and 97765c93cefda367d8e5a8e0afcd610a7e15bbd987Chris Lattner /// JITEmitter classes. It must be held while changing the internal state of 98765c93cefda367d8e5a8e0afcd610a7e15bbd987Chris Lattner /// any of those classes. 99ee448630bdf7eb6037fe2c50518d32010c433ca3Reid Spencer sys::Mutex lock; // Used to make this class and subclasses thread-safe 100ee448630bdf7eb6037fe2c50518d32010c433ca3Reid Spencer 101f4cc3096fd893cdef5b5c2664ebff8c13a07ad51Chris Lattner //===--------------------------------------------------------------------===// 1029f2f142d255bc96f109dd5c6524a485937b1f3a1Chris Lattner // ExecutionEngine Startup 103f4cc3096fd893cdef5b5c2664ebff8c13a07ad51Chris Lattner //===--------------------------------------------------------------------===// 104ea61c358720aa6c7a159d51658b34276316aa841Misha Brukman 1059f2f142d255bc96f109dd5c6524a485937b1f3a1Chris Lattner virtual ~ExecutionEngine(); 106bd199fb1148b9e16c4e6f3d0ee386c2505a55b71Chris Lattner 1079f2f142d255bc96f109dd5c6524a485937b1f3a1Chris Lattner /// create - This is the factory method for creating an execution engine which 1089f2f142d255bc96f109dd5c6524a485937b1f3a1Chris Lattner /// is appropriate for the current machine. This takes ownership of the 1099f2f142d255bc96f109dd5c6524a485937b1f3a1Chris Lattner /// module provider. 1109f2f142d255bc96f109dd5c6524a485937b1f3a1Chris Lattner static ExecutionEngine *create(ModuleProvider *MP, 1119f2f142d255bc96f109dd5c6524a485937b1f3a1Chris Lattner bool ForceInterpreter = false, 112502f20b17ede40de84503010b7699b328a4f2867Evan Cheng std::string *ErrorStr = 0, 113502f20b17ede40de84503010b7699b328a4f2867Evan Cheng bool Fast = false); 1149f2f142d255bc96f109dd5c6524a485937b1f3a1Chris Lattner 1159f2f142d255bc96f109dd5c6524a485937b1f3a1Chris Lattner /// create - This is the factory method for creating an execution engine which 1169f2f142d255bc96f109dd5c6524a485937b1f3a1Chris Lattner /// is appropriate for the current machine. This takes ownership of the 1179f2f142d255bc96f109dd5c6524a485937b1f3a1Chris Lattner /// module. 1189f2f142d255bc96f109dd5c6524a485937b1f3a1Chris Lattner static ExecutionEngine *create(Module *M); 11934c9433004cabd4760987dce4804a91c84908219Chris Lattner 12034c9433004cabd4760987dce4804a91c84908219Chris Lattner /// createJIT - This is the factory method for creating a JIT for the current 12134c9433004cabd4760987dce4804a91c84908219Chris Lattner /// machine, it does not fall back to the interpreter. This takes ownership 12234c9433004cabd4760987dce4804a91c84908219Chris Lattner /// of the ModuleProvider and JITMemoryManager if successful. 12334c9433004cabd4760987dce4804a91c84908219Chris Lattner static ExecutionEngine *createJIT(ModuleProvider *MP, 12434c9433004cabd4760987dce4804a91c84908219Chris Lattner std::string *ErrorStr = 0, 125502f20b17ede40de84503010b7699b328a4f2867Evan Cheng JITMemoryManager *JMM = 0, 126502f20b17ede40de84503010b7699b328a4f2867Evan Cheng bool Fast = false); 12734c9433004cabd4760987dce4804a91c84908219Chris Lattner 1289f2f142d255bc96f109dd5c6524a485937b1f3a1Chris Lattner 1299f2f142d255bc96f109dd5c6524a485937b1f3a1Chris Lattner 1302e40ae4de67ba37d02281d51e7dfd629205e1e30Chris Lattner /// addModuleProvider - Add a ModuleProvider to the list of modules that we 1312e40ae4de67ba37d02281d51e7dfd629205e1e30Chris Lattner /// can JIT from. Note that this takes ownership of the ModuleProvider: when 1322e40ae4de67ba37d02281d51e7dfd629205e1e30Chris Lattner /// the ExecutionEngine is destroyed, it destroys the MP as well. 133f049e07eb8930214941c72f8e4409df394de1567Nate Begeman virtual void addModuleProvider(ModuleProvider *P) { 1342e40ae4de67ba37d02281d51e7dfd629205e1e30Chris Lattner Modules.push_back(P); 1352e40ae4de67ba37d02281d51e7dfd629205e1e30Chris Lattner } 1369f2f142d255bc96f109dd5c6524a485937b1f3a1Chris Lattner 1379f2f142d255bc96f109dd5c6524a485937b1f3a1Chris Lattner //===----------------------------------------------------------------------===// 1389f2f142d255bc96f109dd5c6524a485937b1f3a1Chris Lattner 1399f2f142d255bc96f109dd5c6524a485937b1f3a1Chris Lattner const TargetData *getTargetData() const { return TD; } 1409f2f142d255bc96f109dd5c6524a485937b1f3a1Chris Lattner 14173d0e211a39650fc7562e0f15ed21440dde2243aDevang Patel 14273d0e211a39650fc7562e0f15ed21440dde2243aDevang Patel /// removeModuleProvider - Remove a ModuleProvider from the list of modules. 14373d0e211a39650fc7562e0f15ed21440dde2243aDevang Patel /// Release module from ModuleProvider. 144f049e07eb8930214941c72f8e4409df394de1567Nate Begeman virtual Module* removeModuleProvider(ModuleProvider *P, 145f049e07eb8930214941c72f8e4409df394de1567Nate Begeman std::string *ErrInfo = 0); 14673d0e211a39650fc7562e0f15ed21440dde2243aDevang Patel 147fe854034677f59baca1e38075e71f6efca247a03Chris Lattner /// FindFunctionNamed - Search all of the active modules to find the one that 148fe854034677f59baca1e38075e71f6efca247a03Chris Lattner /// defines FnName. This is very slow operation and shouldn't be used for 149fe854034677f59baca1e38075e71f6efca247a03Chris Lattner /// general code. 150fe854034677f59baca1e38075e71f6efca247a03Chris Lattner Function *FindFunctionNamed(const char *FnName); 151fe854034677f59baca1e38075e71f6efca247a03Chris Lattner 152ff65e36be0f4fbe776ee6bb39b7ab14ebe3895ebChris Lattner /// runFunction - Execute the specified function with the specified arguments, 153ff65e36be0f4fbe776ee6bb39b7ab14ebe3895ebChris Lattner /// and return the result. 154ff65e36be0f4fbe776ee6bb39b7ab14ebe3895ebChris Lattner /// 155ff65e36be0f4fbe776ee6bb39b7ab14ebe3895ebChris Lattner virtual GenericValue runFunction(Function *F, 156ff65e36be0f4fbe776ee6bb39b7ab14ebe3895ebChris Lattner const std::vector<GenericValue> &ArgValues) = 0; 157ff65e36be0f4fbe776ee6bb39b7ab14ebe3895ebChris Lattner 1589ca6cdaee91fddcd3ea57dedcd624c14c7a40f65Chris Lattner /// runStaticConstructorsDestructors - This method is used to execute all of 1599ca6cdaee91fddcd3ea57dedcd624c14c7a40f65Chris Lattner /// the static constructors or destructors for a module, depending on the 1609ca6cdaee91fddcd3ea57dedcd624c14c7a40f65Chris Lattner /// value of isDtors. 1619ca6cdaee91fddcd3ea57dedcd624c14c7a40f65Chris Lattner void runStaticConstructorsDestructors(bool isDtors); 1629ca6cdaee91fddcd3ea57dedcd624c14c7a40f65Chris Lattner 1639ca6cdaee91fddcd3ea57dedcd624c14c7a40f65Chris Lattner 164e5dbbf2bddf7fc28d9f63a5e978af12184c80adaChris Lattner /// runFunctionAsMain - This is a helper function which wraps runFunction to 165e5dbbf2bddf7fc28d9f63a5e978af12184c80adaChris Lattner /// handle the common task of starting up main with the specified argc, argv, 166e5dbbf2bddf7fc28d9f63a5e978af12184c80adaChris Lattner /// and envp parameters. 167e5dbbf2bddf7fc28d9f63a5e978af12184c80adaChris Lattner int runFunctionAsMain(Function *Fn, const std::vector<std::string> &argv, 168e5dbbf2bddf7fc28d9f63a5e978af12184c80adaChris Lattner const char * const * envp); 169e5dbbf2bddf7fc28d9f63a5e978af12184c80adaChris Lattner 170e5dbbf2bddf7fc28d9f63a5e978af12184c80adaChris Lattner 171683d1bb712d8f8fc2d727a160da029c9cf40a423Chris Lattner /// addGlobalMapping - Tell the execution engine that the specified global is 172683d1bb712d8f8fc2d727a160da029c9cf40a423Chris Lattner /// at the specified location. This is used internally as functions are JIT'd 173683d1bb712d8f8fc2d727a160da029c9cf40a423Chris Lattner /// and as global variables are laid out in memory. It can and should also be 174683d1bb712d8f8fc2d727a160da029c9cf40a423Chris Lattner /// used by clients of the EE that want to have an LLVM global overlay 175683d1bb712d8f8fc2d727a160da029c9cf40a423Chris Lattner /// existing data in memory. 176683d1bb712d8f8fc2d727a160da029c9cf40a423Chris Lattner void addGlobalMapping(const GlobalValue *GV, void *Addr); 177683d1bb712d8f8fc2d727a160da029c9cf40a423Chris Lattner 1780982d081056f64d7245ba26368d20de33e206ff9Reid Spencer /// clearAllGlobalMappings - Clear all global mappings and start over again 1790982d081056f64d7245ba26368d20de33e206ff9Reid Spencer /// use in dynamic compilation scenarios when you want to move globals 180683d1bb712d8f8fc2d727a160da029c9cf40a423Chris Lattner void clearAllGlobalMappings(); 181683d1bb712d8f8fc2d727a160da029c9cf40a423Chris Lattner 182f049e07eb8930214941c72f8e4409df394de1567Nate Begeman /// clearGlobalMappingsFromModule - Clear all global mappings that came from a 183f049e07eb8930214941c72f8e4409df394de1567Nate Begeman /// particular module, because it has been removed from the JIT. 184f049e07eb8930214941c72f8e4409df394de1567Nate Begeman void clearGlobalMappingsFromModule(Module *M); 185f049e07eb8930214941c72f8e4409df394de1567Nate Begeman 186f5feaf4fe381476b0ea567d7837c64b6590133e9Chris Lattner /// updateGlobalMapping - Replace an existing mapping for GV with a new 187683d1bb712d8f8fc2d727a160da029c9cf40a423Chris Lattner /// address. This updates both maps as required. If "Addr" is null, the 188f4cc3096fd893cdef5b5c2664ebff8c13a07ad51Chris Lattner /// entry for the global is removed from the mappings. This returns the old 189f4cc3096fd893cdef5b5c2664ebff8c13a07ad51Chris Lattner /// value of the pointer, or null if it was not in the map. 190f4cc3096fd893cdef5b5c2664ebff8c13a07ad51Chris Lattner void *updateGlobalMapping(const GlobalValue *GV, void *Addr); 191683d1bb712d8f8fc2d727a160da029c9cf40a423Chris Lattner 192895be4bae2c4f9a2fd2234f0329f618274e67eabChris Lattner /// getPointerToGlobalIfAvailable - This returns the address of the specified 193683d1bb712d8f8fc2d727a160da029c9cf40a423Chris Lattner /// global value if it is has already been codegen'd, otherwise it returns 194683d1bb712d8f8fc2d727a160da029c9cf40a423Chris Lattner /// null. 195895be4bae2c4f9a2fd2234f0329f618274e67eabChris Lattner /// 196683d1bb712d8f8fc2d727a160da029c9cf40a423Chris Lattner void *getPointerToGlobalIfAvailable(const GlobalValue *GV); 19770bca51f92871c7f9d3eac9ab68292c149fab53cChris Lattner 198895be4bae2c4f9a2fd2234f0329f618274e67eabChris Lattner /// getPointerToGlobal - This returns the address of the specified global 199895be4bae2c4f9a2fd2234f0329f618274e67eabChris Lattner /// value. This may involve code generation if it's a function. 200895be4bae2c4f9a2fd2234f0329f618274e67eabChris Lattner /// 201bd199fb1148b9e16c4e6f3d0ee386c2505a55b71Chris Lattner void *getPointerToGlobal(const GlobalValue *GV); 202bd199fb1148b9e16c4e6f3d0ee386c2505a55b71Chris Lattner 203895be4bae2c4f9a2fd2234f0329f618274e67eabChris Lattner /// getPointerToFunction - The different EE's represent function bodies in 204895be4bae2c4f9a2fd2234f0329f618274e67eabChris Lattner /// different ways. They should each implement this to say what a function 205895be4bae2c4f9a2fd2234f0329f618274e67eabChris Lattner /// pointer should look like. 206895be4bae2c4f9a2fd2234f0329f618274e67eabChris Lattner /// 207fb0ef2e82cb2e80983c097100ae168af68ee8e7bBrian Gaeke virtual void *getPointerToFunction(Function *F) = 0; 208bd199fb1148b9e16c4e6f3d0ee386c2505a55b71Chris Lattner 209895be4bae2c4f9a2fd2234f0329f618274e67eabChris Lattner /// getPointerToFunctionOrStub - If the specified function has been 210895be4bae2c4f9a2fd2234f0329f618274e67eabChris Lattner /// code-gen'd, return a pointer to the function. If not, compile it, or use 211895be4bae2c4f9a2fd2234f0329f618274e67eabChris Lattner /// a stub to implement lazy compilation if available. 212895be4bae2c4f9a2fd2234f0329f618274e67eabChris Lattner /// 21318cb4c3c747ac2439ca9fb1218edd8993df69d7aChris Lattner virtual void *getPointerToFunctionOrStub(Function *F) { 21418cb4c3c747ac2439ca9fb1218edd8993df69d7aChris Lattner // Default implementation, just codegen the function. 21518cb4c3c747ac2439ca9fb1218edd8993df69d7aChris Lattner return getPointerToFunction(F); 21618cb4c3c747ac2439ca9fb1218edd8993df69d7aChris Lattner } 21718cb4c3c747ac2439ca9fb1218edd8993df69d7aChris Lattner 218c8a07d7378699b8d11ce2a1549b984d84706da19Chris Lattner /// getGlobalValueAtAddress - Return the LLVM global value object that starts 219c8a07d7378699b8d11ce2a1549b984d84706da19Chris Lattner /// at the specified address. 220c8a07d7378699b8d11ce2a1549b984d84706da19Chris Lattner /// 221c8a07d7378699b8d11ce2a1549b984d84706da19Chris Lattner const GlobalValue *getGlobalValueAtAddress(void *Addr); 222c8a07d7378699b8d11ce2a1549b984d84706da19Chris Lattner 223c8a07d7378699b8d11ce2a1549b984d84706da19Chris Lattner 224f4cc3096fd893cdef5b5c2664ebff8c13a07ad51Chris Lattner void StoreValueToMemory(const GenericValue &Val, GenericValue *Ptr, 225f4cc3096fd893cdef5b5c2664ebff8c13a07ad51Chris Lattner const Type *Ty); 22629794cba810ec249a9ede5ea77333a71579fd182Brian Gaeke void InitializeMemory(const Constant *Init, void *Addr); 22729794cba810ec249a9ede5ea77333a71579fd182Brian Gaeke 22818cb4c3c747ac2439ca9fb1218edd8993df69d7aChris Lattner /// recompileAndRelinkFunction - This method is used to force a function 229895be4bae2c4f9a2fd2234f0329f618274e67eabChris Lattner /// which has already been compiled to be compiled again, possibly 23018cb4c3c747ac2439ca9fb1218edd8993df69d7aChris Lattner /// after it has been modified. Then the entry to the old copy is overwritten 23118cb4c3c747ac2439ca9fb1218edd8993df69d7aChris Lattner /// with a branch to the new copy. If there was no old copy, this acts 23218cb4c3c747ac2439ca9fb1218edd8993df69d7aChris Lattner /// just like VM::getPointerToFunction(). 23318cb4c3c747ac2439ca9fb1218edd8993df69d7aChris Lattner /// 23418cb4c3c747ac2439ca9fb1218edd8993df69d7aChris Lattner virtual void *recompileAndRelinkFunction(Function *F) = 0; 23518cb4c3c747ac2439ca9fb1218edd8993df69d7aChris Lattner 236e81aaf238c32dbc34274ede09fb16aa78dae9f53Misha Brukman /// freeMachineCodeForFunction - Release memory in the ExecutionEngine 237e81aaf238c32dbc34274ede09fb16aa78dae9f53Misha Brukman /// corresponding to the machine code emitted to execute this function, useful 238e81aaf238c32dbc34274ede09fb16aa78dae9f53Misha Brukman /// for garbage-collecting generated code. 239e81aaf238c32dbc34274ede09fb16aa78dae9f53Misha Brukman /// 240e81aaf238c32dbc34274ede09fb16aa78dae9f53Misha Brukman virtual void freeMachineCodeForFunction(Function *F) = 0; 241e81aaf238c32dbc34274ede09fb16aa78dae9f53Misha Brukman 2421514b5b334c72e1e190fe1ce2bce7bf7d8a91c1aChris Lattner /// getOrEmitGlobalVariable - Return the address of the specified global 2431514b5b334c72e1e190fe1ce2bce7bf7d8a91c1aChris Lattner /// variable, possibly emitting it to memory if needed. This is used by the 2441514b5b334c72e1e190fe1ce2bce7bf7d8a91c1aChris Lattner /// Emitter. 2451514b5b334c72e1e190fe1ce2bce7bf7d8a91c1aChris Lattner virtual void *getOrEmitGlobalVariable(const GlobalVariable *GV) { 2461514b5b334c72e1e190fe1ce2bce7bf7d8a91c1aChris Lattner return getPointerToGlobal((GlobalValue*)GV); 2471514b5b334c72e1e190fe1ce2bce7bf7d8a91c1aChris Lattner } 2481c1a44699049cf56713a46ccaef7c747e4a888a3Chris Lattner 2491c1a44699049cf56713a46ccaef7c747e4a888a3Chris Lattner /// DisableLazyCompilation - If called, the JIT will abort if lazy compilation 250e846db667529eeeae531ce3b7382e18888d1eba0Chris Lattner /// is ever attempted. 251e846db667529eeeae531ce3b7382e18888d1eba0Chris Lattner void DisableLazyCompilation(bool Disabled = true) { 252e846db667529eeeae531ce3b7382e18888d1eba0Chris Lattner LazyCompilationDisabled = Disabled; 2531c1a44699049cf56713a46ccaef7c747e4a888a3Chris Lattner } 2541c1a44699049cf56713a46ccaef7c747e4a888a3Chris Lattner bool isLazyCompilationDisabled() const { 2551c1a44699049cf56713a46ccaef7c747e4a888a3Chris Lattner return LazyCompilationDisabled; 2561c1a44699049cf56713a46ccaef7c747e4a888a3Chris Lattner } 257e846db667529eeeae531ce3b7382e18888d1eba0Chris Lattner /// DisableSymbolSearching - If called, the JIT will not try to lookup unknown 258e846db667529eeeae531ce3b7382e18888d1eba0Chris Lattner /// symbols with dlsym. A client can still use InstallLazyFunctionCreator to 259e846db667529eeeae531ce3b7382e18888d1eba0Chris Lattner /// resolve symbols in a custom way. 260e846db667529eeeae531ce3b7382e18888d1eba0Chris Lattner void DisableSymbolSearching(bool Disabled = true) { 261e846db667529eeeae531ce3b7382e18888d1eba0Chris Lattner SymbolSearchingDisabled = Disabled; 262e846db667529eeeae531ce3b7382e18888d1eba0Chris Lattner } 263e846db667529eeeae531ce3b7382e18888d1eba0Chris Lattner bool isSymbolSearchingDisabled() const { 264e846db667529eeeae531ce3b7382e18888d1eba0Chris Lattner return SymbolSearchingDisabled; 265e846db667529eeeae531ce3b7382e18888d1eba0Chris Lattner } 266d958a5a9feea7239a73c2068f43f237db550f46eChris Lattner 267d958a5a9feea7239a73c2068f43f237db550f46eChris Lattner 268d958a5a9feea7239a73c2068f43f237db550f46eChris Lattner /// InstallLazyFunctionCreator - If an unknown function is needed, the 269d958a5a9feea7239a73c2068f43f237db550f46eChris Lattner /// specified function pointer is invoked to create it. If it returns null, 270d958a5a9feea7239a73c2068f43f237db550f46eChris Lattner /// the JIT will abort. 271d958a5a9feea7239a73c2068f43f237db550f46eChris Lattner void InstallLazyFunctionCreator(void* (*P)(const std::string &)) { 272d958a5a9feea7239a73c2068f43f237db550f46eChris Lattner LazyFunctionCreator = P; 273d958a5a9feea7239a73c2068f43f237db550f46eChris Lattner } 274afe6c2b001a924cd74bd0aacfed5984d9af004b0Nicolas Geoffray 275afe6c2b001a924cd74bd0aacfed5984d9af004b0Nicolas Geoffray /// InstallExceptionTableRegister - The JIT will use the given function 276afe6c2b001a924cd74bd0aacfed5984d9af004b0Nicolas Geoffray /// to register the exception tables it generates. 277afe6c2b001a924cd74bd0aacfed5984d9af004b0Nicolas Geoffray static void InstallExceptionTableRegister(void (*F)(void*)) { 278afe6c2b001a924cd74bd0aacfed5984d9af004b0Nicolas Geoffray ExceptionTableRegister = F; 279afe6c2b001a924cd74bd0aacfed5984d9af004b0Nicolas Geoffray } 280afe6c2b001a924cd74bd0aacfed5984d9af004b0Nicolas Geoffray 281afe6c2b001a924cd74bd0aacfed5984d9af004b0Nicolas Geoffray /// RegisterTable - Registers the given pointer as an exception table. It uses 282afe6c2b001a924cd74bd0aacfed5984d9af004b0Nicolas Geoffray /// the ExceptionTableRegister function. 283afe6c2b001a924cd74bd0aacfed5984d9af004b0Nicolas Geoffray static void RegisterTable(void* res) { 284afe6c2b001a924cd74bd0aacfed5984d9af004b0Nicolas Geoffray if (ExceptionTableRegister) 285afe6c2b001a924cd74bd0aacfed5984d9af004b0Nicolas Geoffray ExceptionTableRegister(res); 286afe6c2b001a924cd74bd0aacfed5984d9af004b0Nicolas Geoffray } 2871514b5b334c72e1e190fe1ce2bce7bf7d8a91c1aChris Lattner 28856adf152f6354a9b5609e059050fd2315ad5960cChris Lattnerprotected: 289ded2b0d0fb0d4fa09198e3d05da529d2c97214c3Dan Gohman explicit ExecutionEngine(ModuleProvider *P); 2909f2f142d255bc96f109dd5c6524a485937b1f3a1Chris Lattner 291bd199fb1148b9e16c4e6f3d0ee386c2505a55b71Chris Lattner void emitGlobals(); 2923ddc05bdde6ed65f93340ea467d362e80c0ceb9cChris Lattner 2933ddc05bdde6ed65f93340ea467d362e80c0ceb9cChris Lattner // EmitGlobalVariable - This method emits the specified global variable to the 2943ddc05bdde6ed65f93340ea467d362e80c0ceb9cChris Lattner // address specified in GlobalAddresses, or allocates new memory if it's not 2953ddc05bdde6ed65f93340ea467d362e80c0ceb9cChris Lattner // already in the map. 2961514b5b334c72e1e190fe1ce2bce7bf7d8a91c1aChris Lattner void EmitGlobalVariable(const GlobalVariable *GV); 2973ddc05bdde6ed65f93340ea467d362e80c0ceb9cChris Lattner 298bd199fb1148b9e16c4e6f3d0ee386c2505a55b71Chris Lattner GenericValue getConstantValue(const Constant *C); 29947567bdcb5ba3886eaf3fa5f0e0b912a24c12347Reid Spencer void LoadValueFromMemory(GenericValue &Result, GenericValue *Ptr, 30047567bdcb5ba3886eaf3fa5f0e0b912a24c12347Reid Spencer const Type *Ty); 301bd199fb1148b9e16c4e6f3d0ee386c2505a55b71Chris Lattner}; 302bd199fb1148b9e16c4e6f3d0ee386c2505a55b71Chris Lattner 303d0fde30ce850b78371fd1386338350591f9ff494Brian Gaeke} // End llvm namespace 304d0fde30ce850b78371fd1386338350591f9ff494Brian Gaeke 305bd199fb1148b9e16c4e6f3d0ee386c2505a55b71Chris Lattner#endif 306