llvm-6502/lib/ExecutionEngine/MCJIT/MCJIT.h
David Tweed abb38fe8de Minor changes to the MCJITTest unittests to use the correct API for finalizing
the JIT object (including XFAIL an ARM test that now needs fixing). Also renames
internal function for consistency.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@182085 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-17 10:01:46 +00:00

131 lines
4.5 KiB
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//===-- MCJIT.h - Class definition for the MCJIT ----------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_LIB_EXECUTIONENGINE_MCJIT_H
#define LLVM_LIB_EXECUTIONENGINE_MCJIT_H
#include "llvm/ADT/SmallVector.h"
#include "llvm/ExecutionEngine/ExecutionEngine.h"
#include "llvm/ExecutionEngine/ObjectCache.h"
#include "llvm/ExecutionEngine/RuntimeDyld.h"
#include "llvm/PassManager.h"
namespace llvm {
class ObjectImage;
// FIXME: This makes all kinds of horrible assumptions for the time being,
// like only having one module, not needing to worry about multi-threading,
// blah blah. Purely in get-it-up-and-limping mode for now.
class MCJIT : public ExecutionEngine {
MCJIT(Module *M, TargetMachine *tm, RTDyldMemoryManager *MemMgr,
bool AllocateGVsWithCode);
TargetMachine *TM;
MCContext *Ctx;
RTDyldMemoryManager *MemMgr;
RuntimeDyld Dyld;
SmallVector<JITEventListener*, 2> EventListeners;
// FIXME: Add support for multiple modules
bool IsLoaded;
Module *M;
OwningPtr<ObjectImage> LoadedObject;
// An optional ObjectCache to be notified of compiled objects and used to
// perform lookup of pre-compiled code to avoid re-compilation.
ObjectCache *ObjCache;
public:
~MCJIT();
/// @name ExecutionEngine interface implementation
/// @{
/// Sets the object manager that MCJIT should use to avoid compilation.
virtual void setObjectCache(ObjectCache *manager);
/// finalizeObject - ensure the module is fully processed and is usable.
///
/// It is the user-level function for completing the process of making the
/// object usable for execution. It should be called after sections within an
/// object have been relocated using mapSectionAddress. When this method is
/// called the MCJIT execution engine will reapply relocations for a loaded
/// object.
virtual void finalizeObject();
virtual void *getPointerToBasicBlock(BasicBlock *BB);
virtual void *getPointerToFunction(Function *F);
virtual void *recompileAndRelinkFunction(Function *F);
virtual void freeMachineCodeForFunction(Function *F);
virtual GenericValue runFunction(Function *F,
const std::vector<GenericValue> &ArgValues);
/// getPointerToNamedFunction - This method returns the address of the
/// specified function by using the dlsym function call. As such it is only
/// useful for resolving library symbols, not code generated symbols.
///
/// If AbortOnFailure is false and no function with the given name is
/// found, this function silently returns a null pointer. Otherwise,
/// it prints a message to stderr and aborts.
///
virtual void *getPointerToNamedFunction(const std::string &Name,
bool AbortOnFailure = true);
/// mapSectionAddress - map a section to its target address space value.
/// Map the address of a JIT section as returned from the memory manager
/// to the address in the target process as the running code will see it.
/// This is the address which will be used for relocation resolution.
virtual void mapSectionAddress(const void *LocalAddress,
uint64_t TargetAddress) {
Dyld.mapSectionAddress(LocalAddress, TargetAddress);
}
virtual void RegisterJITEventListener(JITEventListener *L);
virtual void UnregisterJITEventListener(JITEventListener *L);
/// @}
/// @name (Private) Registration Interfaces
/// @{
static void Register() {
MCJITCtor = createJIT;
}
static ExecutionEngine *createJIT(Module *M,
std::string *ErrorStr,
RTDyldMemoryManager *MemMgr,
bool GVsWithCode,
TargetMachine *TM);
// @}
protected:
/// emitObject -- Generate a JITed object in memory from the specified module
/// Currently, MCJIT only supports a single module and the module passed to
/// this function call is expected to be the contained module. The module
/// is passed as a parameter here to prepare for multiple module support in
/// the future.
ObjectBufferStream* emitObject(Module *M);
void loadObject(Module *M);
void NotifyObjectEmitted(const ObjectImage& Obj);
void NotifyFreeingObject(const ObjectImage& Obj);
};
} // End llvm namespace
#endif