ExecutionEngine.h revision d958a5a9feea7239a73c2068f43f237db550f46e
1bd199fb1148b9e16c4e6f3d0ee386c2505a55b71Chris Lattner//===- ExecutionEngine.h - Abstract Execution Engine Interface --*- C++ -*-===// 2ea61c358720aa6c7a159d51658b34276316aa841Misha Brukman// 36fbcc26f1460eaee4e0eb8b426fc1ff0c7af11beJohn Criswell// The LLVM Compiler Infrastructure 46fbcc26f1460eaee4e0eb8b426fc1ff0c7af11beJohn Criswell// 56fbcc26f1460eaee4e0eb8b426fc1ff0c7af11beJohn Criswell// This file was developed by the LLVM research group and is distributed under 66fbcc26f1460eaee4e0eb8b426fc1ff0c7af11beJohn Criswell// the University of Illinois Open Source 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 15bd199fb1148b9e16c4e6f3d0ee386c2505a55b71Chris Lattner#ifndef EXECUTION_ENGINE_H 16bd199fb1148b9e16c4e6f3d0ee386c2505a55b71Chris Lattner#define 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; 37bd199fb1148b9e16c4e6f3d0ee386c2505a55b71Chris Lattner 38ee448630bdf7eb6037fe2c50518d32010c433ca3Reid Spencerclass ExecutionEngineState { 39ee448630bdf7eb6037fe2c50518d32010c433ca3Reid Spencerprivate: 40c8a07d7378699b8d11ce2a1549b984d84706da19Chris Lattner /// GlobalAddressMap - A mapping between LLVM global values and their 41c8a07d7378699b8d11ce2a1549b984d84706da19Chris Lattner /// actualized version... 42c8a07d7378699b8d11ce2a1549b984d84706da19Chris Lattner std::map<const GlobalValue*, void *> GlobalAddressMap; 43c8a07d7378699b8d11ce2a1549b984d84706da19Chris Lattner 44c8a07d7378699b8d11ce2a1549b984d84706da19Chris Lattner /// GlobalAddressReverseMap - This is the reverse mapping of GlobalAddressMap, 45c8a07d7378699b8d11ce2a1549b984d84706da19Chris Lattner /// used to convert raw addresses into the LLVM global value that is emitted 46c8a07d7378699b8d11ce2a1549b984d84706da19Chris Lattner /// at the address. This map is not computed unless getGlobalValueAtAddress 47c8a07d7378699b8d11ce2a1549b984d84706da19Chris Lattner /// is called at some point. 48c8a07d7378699b8d11ce2a1549b984d84706da19Chris Lattner std::map<void *, const GlobalValue*> GlobalAddressReverseMap; 49ee448630bdf7eb6037fe2c50518d32010c433ca3Reid Spencer 50ee448630bdf7eb6037fe2c50518d32010c433ca3Reid Spencerpublic: 51765c93cefda367d8e5a8e0afcd610a7e15bbd987Chris Lattner std::map<const GlobalValue*, void *> & 52765c93cefda367d8e5a8e0afcd610a7e15bbd987Chris Lattner getGlobalAddressMap(const MutexGuard &locked) { 53ee448630bdf7eb6037fe2c50518d32010c433ca3Reid Spencer return GlobalAddressMap; 54ee448630bdf7eb6037fe2c50518d32010c433ca3Reid Spencer } 55ee448630bdf7eb6037fe2c50518d32010c433ca3Reid Spencer 56765c93cefda367d8e5a8e0afcd610a7e15bbd987Chris Lattner std::map<void*, const GlobalValue*> & 57765c93cefda367d8e5a8e0afcd610a7e15bbd987Chris Lattner getGlobalAddressReverseMap(const MutexGuard& locked) { 58ee448630bdf7eb6037fe2c50518d32010c433ca3Reid Spencer return GlobalAddressReverseMap; 59ee448630bdf7eb6037fe2c50518d32010c433ca3Reid Spencer } 60ee448630bdf7eb6037fe2c50518d32010c433ca3Reid Spencer}; 61ee448630bdf7eb6037fe2c50518d32010c433ca3Reid Spencer 62ee448630bdf7eb6037fe2c50518d32010c433ca3Reid Spencer 63ee448630bdf7eb6037fe2c50518d32010c433ca3Reid Spencerclass ExecutionEngine { 64ee448630bdf7eb6037fe2c50518d32010c433ca3Reid Spencer const TargetData *TD; 65ee448630bdf7eb6037fe2c50518d32010c433ca3Reid Spencer ExecutionEngineState state; 661c1a44699049cf56713a46ccaef7c747e4a888a3Chris Lattner bool LazyCompilationDisabled; 67d958a5a9feea7239a73c2068f43f237db550f46eChris Lattner 681514b5b334c72e1e190fe1ce2bce7bf7d8a91c1aChris Lattnerprotected: 69fe854034677f59baca1e38075e71f6efca247a03Chris Lattner /// Modules - This is a list of ModuleProvider's that we are JIT'ing from. We 70fe854034677f59baca1e38075e71f6efca247a03Chris Lattner /// use a smallvector to optimize for the case where there is only one module. 71fe854034677f59baca1e38075e71f6efca247a03Chris Lattner SmallVector<ModuleProvider*, 1> Modules; 72fe854034677f59baca1e38075e71f6efca247a03Chris Lattner 73a69571c7991813c93cba64e88eced6899ce93d81Owen Anderson void setTargetData(const TargetData *td) { 74a69571c7991813c93cba64e88eced6899ce93d81Owen Anderson TD = td; 75bd199fb1148b9e16c4e6f3d0ee386c2505a55b71Chris Lattner } 76b6c54ed8f50a351989993a5ef88507abc6d63e2dMisha Brukman 77765c93cefda367d8e5a8e0afcd610a7e15bbd987Chris Lattner // To avoid having libexecutionengine depend on the JIT and interpreter 78765c93cefda367d8e5a8e0afcd610a7e15bbd987Chris Lattner // libraries, the JIT and Interpreter set these functions to ctor pointers 79765c93cefda367d8e5a8e0afcd610a7e15bbd987Chris Lattner // at startup time if they are linked in. 80c923435a5953993c046b6259a8c4c0589e00b69fReid Spencer typedef ExecutionEngine *(*EECtorFn)(ModuleProvider*, std::string*); 81765c93cefda367d8e5a8e0afcd610a7e15bbd987Chris Lattner static EECtorFn JITCtor, InterpCtor; 82d958a5a9feea7239a73c2068f43f237db550f46eChris Lattner 83d958a5a9feea7239a73c2068f43f237db550f46eChris Lattner /// LazyFunctionCreator - If an unknown function is needed, this function 84d958a5a9feea7239a73c2068f43f237db550f46eChris Lattner /// pointer is invoked to create it. If this returns null, the JIT will abort. 85d958a5a9feea7239a73c2068f43f237db550f46eChris Lattner void* (*LazyFunctionCreator)(const std::string &); 86d958a5a9feea7239a73c2068f43f237db550f46eChris Lattner 87bd199fb1148b9e16c4e6f3d0ee386c2505a55b71Chris Lattnerpublic: 88765c93cefda367d8e5a8e0afcd610a7e15bbd987Chris Lattner /// lock - This lock is protects the ExecutionEngine, JIT, JITResolver and 89765c93cefda367d8e5a8e0afcd610a7e15bbd987Chris Lattner /// JITEmitter classes. It must be held while changing the internal state of 90765c93cefda367d8e5a8e0afcd610a7e15bbd987Chris Lattner /// any of those classes. 91ee448630bdf7eb6037fe2c50518d32010c433ca3Reid Spencer sys::Mutex lock; // Used to make this class and subclasses thread-safe 92ee448630bdf7eb6037fe2c50518d32010c433ca3Reid Spencer 937034adbce2fc7e761d745dbf586167380a69ee1aMisha Brukman ExecutionEngine(ModuleProvider *P); 947034adbce2fc7e761d745dbf586167380a69ee1aMisha Brukman ExecutionEngine(Module *M); 95bd199fb1148b9e16c4e6f3d0ee386c2505a55b71Chris Lattner virtual ~ExecutionEngine(); 96ea61c358720aa6c7a159d51658b34276316aa841Misha Brukman 97a69571c7991813c93cba64e88eced6899ce93d81Owen Anderson const TargetData *getTargetData() const { return TD; } 98bd199fb1148b9e16c4e6f3d0ee386c2505a55b71Chris Lattner 992e40ae4de67ba37d02281d51e7dfd629205e1e30Chris Lattner /// addModuleProvider - Add a ModuleProvider to the list of modules that we 1002e40ae4de67ba37d02281d51e7dfd629205e1e30Chris Lattner /// can JIT from. Note that this takes ownership of the ModuleProvider: when 1012e40ae4de67ba37d02281d51e7dfd629205e1e30Chris Lattner /// the ExecutionEngine is destroyed, it destroys the MP as well. 1022e40ae4de67ba37d02281d51e7dfd629205e1e30Chris Lattner void addModuleProvider(ModuleProvider *P) { 1032e40ae4de67ba37d02281d51e7dfd629205e1e30Chris Lattner Modules.push_back(P); 1042e40ae4de67ba37d02281d51e7dfd629205e1e30Chris Lattner } 10573d0e211a39650fc7562e0f15ed21440dde2243aDevang Patel 10673d0e211a39650fc7562e0f15ed21440dde2243aDevang Patel /// removeModuleProvider - Remove a ModuleProvider from the list of modules. 10773d0e211a39650fc7562e0f15ed21440dde2243aDevang Patel /// Release module from ModuleProvider. 10873d0e211a39650fc7562e0f15ed21440dde2243aDevang Patel Module* removeModuleProvider(ModuleProvider *P, std::string *ErrInfo = 0); 10973d0e211a39650fc7562e0f15ed21440dde2243aDevang Patel 110fe854034677f59baca1e38075e71f6efca247a03Chris Lattner /// FindFunctionNamed - Search all of the active modules to find the one that 111fe854034677f59baca1e38075e71f6efca247a03Chris Lattner /// defines FnName. This is very slow operation and shouldn't be used for 112fe854034677f59baca1e38075e71f6efca247a03Chris Lattner /// general code. 113fe854034677f59baca1e38075e71f6efca247a03Chris Lattner Function *FindFunctionNamed(const char *FnName); 114fe854034677f59baca1e38075e71f6efca247a03Chris Lattner 115ff65e36be0f4fbe776ee6bb39b7ab14ebe3895ebChris Lattner /// create - This is the factory method for creating an execution engine which 1168b5295b7bb8bf44f13df7fc8e38069d1218b1f94Chris Lattner /// is appropriate for the current machine. This takes ownership of the 1178b5295b7bb8bf44f13df7fc8e38069d1218b1f94Chris Lattner /// module provider. 118726c1ef2bdd72975f41e3188371bb7d6f40401beChris Lattner static ExecutionEngine *create(ModuleProvider *MP, 119c923435a5953993c046b6259a8c4c0589e00b69fReid Spencer bool ForceInterpreter = false, 120c923435a5953993c046b6259a8c4c0589e00b69fReid Spencer std::string *ErrorStr = 0); 12182d8277ad5862b54341808812bb4016e52347060Brian Gaeke 1228b5295b7bb8bf44f13df7fc8e38069d1218b1f94Chris Lattner /// create - This is the factory method for creating an execution engine which 1238b5295b7bb8bf44f13df7fc8e38069d1218b1f94Chris Lattner /// is appropriate for the current machine. This takes ownership of the 1248b5295b7bb8bf44f13df7fc8e38069d1218b1f94Chris Lattner /// module. 1258b5295b7bb8bf44f13df7fc8e38069d1218b1f94Chris Lattner static ExecutionEngine *create(Module *M); 1268b5295b7bb8bf44f13df7fc8e38069d1218b1f94Chris Lattner 127ff65e36be0f4fbe776ee6bb39b7ab14ebe3895ebChris Lattner /// runFunction - Execute the specified function with the specified arguments, 128ff65e36be0f4fbe776ee6bb39b7ab14ebe3895ebChris Lattner /// and return the result. 129ff65e36be0f4fbe776ee6bb39b7ab14ebe3895ebChris Lattner /// 130ff65e36be0f4fbe776ee6bb39b7ab14ebe3895ebChris Lattner virtual GenericValue runFunction(Function *F, 131ff65e36be0f4fbe776ee6bb39b7ab14ebe3895ebChris Lattner const std::vector<GenericValue> &ArgValues) = 0; 132ff65e36be0f4fbe776ee6bb39b7ab14ebe3895ebChris Lattner 1339ca6cdaee91fddcd3ea57dedcd624c14c7a40f65Chris Lattner /// runStaticConstructorsDestructors - This method is used to execute all of 1349ca6cdaee91fddcd3ea57dedcd624c14c7a40f65Chris Lattner /// the static constructors or destructors for a module, depending on the 1359ca6cdaee91fddcd3ea57dedcd624c14c7a40f65Chris Lattner /// value of isDtors. 1369ca6cdaee91fddcd3ea57dedcd624c14c7a40f65Chris Lattner void runStaticConstructorsDestructors(bool isDtors); 1379ca6cdaee91fddcd3ea57dedcd624c14c7a40f65Chris Lattner 1389ca6cdaee91fddcd3ea57dedcd624c14c7a40f65Chris Lattner 139e5dbbf2bddf7fc28d9f63a5e978af12184c80adaChris Lattner /// runFunctionAsMain - This is a helper function which wraps runFunction to 140e5dbbf2bddf7fc28d9f63a5e978af12184c80adaChris Lattner /// handle the common task of starting up main with the specified argc, argv, 141e5dbbf2bddf7fc28d9f63a5e978af12184c80adaChris Lattner /// and envp parameters. 142e5dbbf2bddf7fc28d9f63a5e978af12184c80adaChris Lattner int runFunctionAsMain(Function *Fn, const std::vector<std::string> &argv, 143e5dbbf2bddf7fc28d9f63a5e978af12184c80adaChris Lattner const char * const * envp); 144e5dbbf2bddf7fc28d9f63a5e978af12184c80adaChris Lattner 145e5dbbf2bddf7fc28d9f63a5e978af12184c80adaChris Lattner 146683d1bb712d8f8fc2d727a160da029c9cf40a423Chris Lattner /// addGlobalMapping - Tell the execution engine that the specified global is 147683d1bb712d8f8fc2d727a160da029c9cf40a423Chris Lattner /// at the specified location. This is used internally as functions are JIT'd 148683d1bb712d8f8fc2d727a160da029c9cf40a423Chris Lattner /// and as global variables are laid out in memory. It can and should also be 149683d1bb712d8f8fc2d727a160da029c9cf40a423Chris Lattner /// used by clients of the EE that want to have an LLVM global overlay 150683d1bb712d8f8fc2d727a160da029c9cf40a423Chris Lattner /// existing data in memory. 151683d1bb712d8f8fc2d727a160da029c9cf40a423Chris Lattner void addGlobalMapping(const GlobalValue *GV, void *Addr); 152683d1bb712d8f8fc2d727a160da029c9cf40a423Chris Lattner 1530982d081056f64d7245ba26368d20de33e206ff9Reid Spencer /// clearAllGlobalMappings - Clear all global mappings and start over again 1540982d081056f64d7245ba26368d20de33e206ff9Reid Spencer /// use in dynamic compilation scenarios when you want to move globals 155683d1bb712d8f8fc2d727a160da029c9cf40a423Chris Lattner void clearAllGlobalMappings(); 156683d1bb712d8f8fc2d727a160da029c9cf40a423Chris Lattner 157f5feaf4fe381476b0ea567d7837c64b6590133e9Chris Lattner /// updateGlobalMapping - Replace an existing mapping for GV with a new 158683d1bb712d8f8fc2d727a160da029c9cf40a423Chris Lattner /// address. This updates both maps as required. If "Addr" is null, the 159683d1bb712d8f8fc2d727a160da029c9cf40a423Chris Lattner /// entry for the global is removed from the mappings. 160683d1bb712d8f8fc2d727a160da029c9cf40a423Chris Lattner void updateGlobalMapping(const GlobalValue *GV, void *Addr); 161683d1bb712d8f8fc2d727a160da029c9cf40a423Chris Lattner 162895be4bae2c4f9a2fd2234f0329f618274e67eabChris Lattner /// getPointerToGlobalIfAvailable - This returns the address of the specified 163683d1bb712d8f8fc2d727a160da029c9cf40a423Chris Lattner /// global value if it is has already been codegen'd, otherwise it returns 164683d1bb712d8f8fc2d727a160da029c9cf40a423Chris Lattner /// null. 165895be4bae2c4f9a2fd2234f0329f618274e67eabChris Lattner /// 166683d1bb712d8f8fc2d727a160da029c9cf40a423Chris Lattner void *getPointerToGlobalIfAvailable(const GlobalValue *GV); 16770bca51f92871c7f9d3eac9ab68292c149fab53cChris Lattner 168895be4bae2c4f9a2fd2234f0329f618274e67eabChris Lattner /// getPointerToGlobal - This returns the address of the specified global 169895be4bae2c4f9a2fd2234f0329f618274e67eabChris Lattner /// value. This may involve code generation if it's a function. 170895be4bae2c4f9a2fd2234f0329f618274e67eabChris Lattner /// 171bd199fb1148b9e16c4e6f3d0ee386c2505a55b71Chris Lattner void *getPointerToGlobal(const GlobalValue *GV); 172bd199fb1148b9e16c4e6f3d0ee386c2505a55b71Chris Lattner 173895be4bae2c4f9a2fd2234f0329f618274e67eabChris Lattner /// getPointerToFunction - The different EE's represent function bodies in 174895be4bae2c4f9a2fd2234f0329f618274e67eabChris Lattner /// different ways. They should each implement this to say what a function 175895be4bae2c4f9a2fd2234f0329f618274e67eabChris Lattner /// pointer should look like. 176895be4bae2c4f9a2fd2234f0329f618274e67eabChris Lattner /// 177fb0ef2e82cb2e80983c097100ae168af68ee8e7bBrian Gaeke virtual void *getPointerToFunction(Function *F) = 0; 178bd199fb1148b9e16c4e6f3d0ee386c2505a55b71Chris Lattner 179895be4bae2c4f9a2fd2234f0329f618274e67eabChris Lattner /// getPointerToFunctionOrStub - If the specified function has been 180895be4bae2c4f9a2fd2234f0329f618274e67eabChris Lattner /// code-gen'd, return a pointer to the function. If not, compile it, or use 181895be4bae2c4f9a2fd2234f0329f618274e67eabChris Lattner /// a stub to implement lazy compilation if available. 182895be4bae2c4f9a2fd2234f0329f618274e67eabChris Lattner /// 18318cb4c3c747ac2439ca9fb1218edd8993df69d7aChris Lattner virtual void *getPointerToFunctionOrStub(Function *F) { 18418cb4c3c747ac2439ca9fb1218edd8993df69d7aChris Lattner // Default implementation, just codegen the function. 18518cb4c3c747ac2439ca9fb1218edd8993df69d7aChris Lattner return getPointerToFunction(F); 18618cb4c3c747ac2439ca9fb1218edd8993df69d7aChris Lattner } 18718cb4c3c747ac2439ca9fb1218edd8993df69d7aChris Lattner 188c8a07d7378699b8d11ce2a1549b984d84706da19Chris Lattner /// getGlobalValueAtAddress - Return the LLVM global value object that starts 189c8a07d7378699b8d11ce2a1549b984d84706da19Chris Lattner /// at the specified address. 190c8a07d7378699b8d11ce2a1549b984d84706da19Chris Lattner /// 191c8a07d7378699b8d11ce2a1549b984d84706da19Chris Lattner const GlobalValue *getGlobalValueAtAddress(void *Addr); 192c8a07d7378699b8d11ce2a1549b984d84706da19Chris Lattner 193c8a07d7378699b8d11ce2a1549b984d84706da19Chris Lattner 1942471ae46df8f59a69cc152230f3f39d2e68525c5Reid Spencer void StoreValueToMemory(const GenericValue &Val, GenericValue *Ptr, const Type *Ty); 19529794cba810ec249a9ede5ea77333a71579fd182Brian Gaeke void InitializeMemory(const Constant *Init, void *Addr); 19629794cba810ec249a9ede5ea77333a71579fd182Brian Gaeke 19718cb4c3c747ac2439ca9fb1218edd8993df69d7aChris Lattner /// recompileAndRelinkFunction - This method is used to force a function 198895be4bae2c4f9a2fd2234f0329f618274e67eabChris Lattner /// which has already been compiled to be compiled again, possibly 19918cb4c3c747ac2439ca9fb1218edd8993df69d7aChris Lattner /// after it has been modified. Then the entry to the old copy is overwritten 20018cb4c3c747ac2439ca9fb1218edd8993df69d7aChris Lattner /// with a branch to the new copy. If there was no old copy, this acts 20118cb4c3c747ac2439ca9fb1218edd8993df69d7aChris Lattner /// just like VM::getPointerToFunction(). 20218cb4c3c747ac2439ca9fb1218edd8993df69d7aChris Lattner /// 20318cb4c3c747ac2439ca9fb1218edd8993df69d7aChris Lattner virtual void *recompileAndRelinkFunction(Function *F) = 0; 20418cb4c3c747ac2439ca9fb1218edd8993df69d7aChris Lattner 205e81aaf238c32dbc34274ede09fb16aa78dae9f53Misha Brukman /// freeMachineCodeForFunction - Release memory in the ExecutionEngine 206e81aaf238c32dbc34274ede09fb16aa78dae9f53Misha Brukman /// corresponding to the machine code emitted to execute this function, useful 207e81aaf238c32dbc34274ede09fb16aa78dae9f53Misha Brukman /// for garbage-collecting generated code. 208e81aaf238c32dbc34274ede09fb16aa78dae9f53Misha Brukman /// 209e81aaf238c32dbc34274ede09fb16aa78dae9f53Misha Brukman virtual void freeMachineCodeForFunction(Function *F) = 0; 210e81aaf238c32dbc34274ede09fb16aa78dae9f53Misha Brukman 2111514b5b334c72e1e190fe1ce2bce7bf7d8a91c1aChris Lattner /// getOrEmitGlobalVariable - Return the address of the specified global 2121514b5b334c72e1e190fe1ce2bce7bf7d8a91c1aChris Lattner /// variable, possibly emitting it to memory if needed. This is used by the 2131514b5b334c72e1e190fe1ce2bce7bf7d8a91c1aChris Lattner /// Emitter. 2141514b5b334c72e1e190fe1ce2bce7bf7d8a91c1aChris Lattner virtual void *getOrEmitGlobalVariable(const GlobalVariable *GV) { 2151514b5b334c72e1e190fe1ce2bce7bf7d8a91c1aChris Lattner return getPointerToGlobal((GlobalValue*)GV); 2161514b5b334c72e1e190fe1ce2bce7bf7d8a91c1aChris Lattner } 2171c1a44699049cf56713a46ccaef7c747e4a888a3Chris Lattner 2181c1a44699049cf56713a46ccaef7c747e4a888a3Chris Lattner /// DisableLazyCompilation - If called, the JIT will abort if lazy compilation 2191c1a44699049cf56713a46ccaef7c747e4a888a3Chris Lattner // is ever attempted. 2201c1a44699049cf56713a46ccaef7c747e4a888a3Chris Lattner void DisableLazyCompilation() { 2211c1a44699049cf56713a46ccaef7c747e4a888a3Chris Lattner LazyCompilationDisabled = true; 2221c1a44699049cf56713a46ccaef7c747e4a888a3Chris Lattner } 2231c1a44699049cf56713a46ccaef7c747e4a888a3Chris Lattner bool isLazyCompilationDisabled() const { 2241c1a44699049cf56713a46ccaef7c747e4a888a3Chris Lattner return LazyCompilationDisabled; 2251c1a44699049cf56713a46ccaef7c747e4a888a3Chris Lattner } 226d958a5a9feea7239a73c2068f43f237db550f46eChris Lattner 227d958a5a9feea7239a73c2068f43f237db550f46eChris Lattner 228d958a5a9feea7239a73c2068f43f237db550f46eChris Lattner /// InstallLazyFunctionCreator - If an unknown function is needed, the 229d958a5a9feea7239a73c2068f43f237db550f46eChris Lattner /// specified function pointer is invoked to create it. If it returns null, 230d958a5a9feea7239a73c2068f43f237db550f46eChris Lattner /// the JIT will abort. 231d958a5a9feea7239a73c2068f43f237db550f46eChris Lattner void InstallLazyFunctionCreator(void* (*P)(const std::string &)) { 232d958a5a9feea7239a73c2068f43f237db550f46eChris Lattner LazyFunctionCreator = P; 233d958a5a9feea7239a73c2068f43f237db550f46eChris Lattner } 2341514b5b334c72e1e190fe1ce2bce7bf7d8a91c1aChris Lattner 23556adf152f6354a9b5609e059050fd2315ad5960cChris Lattnerprotected: 236bd199fb1148b9e16c4e6f3d0ee386c2505a55b71Chris Lattner void emitGlobals(); 2373ddc05bdde6ed65f93340ea467d362e80c0ceb9cChris Lattner 2383ddc05bdde6ed65f93340ea467d362e80c0ceb9cChris Lattner // EmitGlobalVariable - This method emits the specified global variable to the 2393ddc05bdde6ed65f93340ea467d362e80c0ceb9cChris Lattner // address specified in GlobalAddresses, or allocates new memory if it's not 2403ddc05bdde6ed65f93340ea467d362e80c0ceb9cChris Lattner // already in the map. 2411514b5b334c72e1e190fe1ce2bce7bf7d8a91c1aChris Lattner void EmitGlobalVariable(const GlobalVariable *GV); 2423ddc05bdde6ed65f93340ea467d362e80c0ceb9cChris Lattner 243bd199fb1148b9e16c4e6f3d0ee386c2505a55b71Chris Lattner GenericValue getConstantValue(const Constant *C); 24447567bdcb5ba3886eaf3fa5f0e0b912a24c12347Reid Spencer void LoadValueFromMemory(GenericValue &Result, GenericValue *Ptr, 24547567bdcb5ba3886eaf3fa5f0e0b912a24c12347Reid Spencer const Type *Ty); 246bd199fb1148b9e16c4e6f3d0ee386c2505a55b71Chris Lattner}; 247bd199fb1148b9e16c4e6f3d0ee386c2505a55b71Chris Lattner 248d0fde30ce850b78371fd1386338350591f9ff494Brian Gaeke} // End llvm namespace 249d0fde30ce850b78371fd1386338350591f9ff494Brian Gaeke 250bd199fb1148b9e16c4e6f3d0ee386c2505a55b71Chris Lattner#endif 251