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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.
#include "llvm/PassManager.h"
#include "llvm/ExecutionEngine/ExecutionEngine.h"
#include "llvm/ExecutionEngine/RuntimeDyld.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/Support/raw_ostream.h"
namespace llvm {
// 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, TargetJITInfo &tji,
RTDyldMemoryManager *MemMgr, bool AllocateGVsWithCode);
TargetMachine *TM;
MCContext *Ctx;
RTDyldMemoryManager *MemMgr;
// FIXME: These may need moved to a separate 'jitstate' member like the
// non-MC JIT does for multithreading and such. Just keep them here for now.
PassManager PM;
Module *M;
// FIXME: This really doesn't belong here.
SmallVector<char, 4096> Buffer; // Working buffer into which we JIT.
raw_svector_ostream OS;
RuntimeDyld Dyld;
/// @name ExecutionEngine interface implementation
/// @{
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(void *LocalAddress, uint64_t TargetAddress) {
Dyld.mapSectionAddress(LocalAddress, TargetAddress);
/// @}
/// @name (Private) Registration Interfaces
/// @{
static void Register() {
MCJITCtor = createJIT;
static ExecutionEngine *createJIT(Module *M,
std::string *ErrorStr,
JITMemoryManager *JMM,
bool GVsWithCode,
TargetMachine *TM);
// @}
} // End llvm namespace