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https://github.com/c64scene-ar/llvm-6502.git
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31649e61bc
Proof-of-concept code that code-gens a module to an in-memory MachO object. This will be hooked up to a run-time dynamic linker library (see: llvm-rtdyld for similarly conceptual work for that part) which will take the compiled object and link it together with the rest of the system, providing back to the JIT a table of available symbols which will be used to respond to the getPointerTo*() queries. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127916 91177308-0d34-0410-b5e6-96231b3b80d8
88 lines
2.8 KiB
C++
88 lines
2.8 KiB
C++
//===-- MCJIT.h - Class definition for the MCJIT ----------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_EXECUTIONENGINE_MCJIT_H
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#define LLVM_LIB_EXECUTIONENGINE_MCJIT_H
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#include "llvm/PassManager.h"
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#include "llvm/ExecutionEngine/ExecutionEngine.h"
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#include "llvm/ADT/SmallVector.h"
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#include "llvm/Support/raw_ostream.h"
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namespace llvm {
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// FIXME: This makes all kinds of horrible assumptions for the time being,
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// like only having one module, not needing to worry about multi-threading,
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// blah blah. Purely in get-it-up-and-limping mode for now.
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class MCJIT : public ExecutionEngine {
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MCJIT(Module *M, TargetMachine *tm, TargetJITInfo &tji,
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JITMemoryManager *JMM, CodeGenOpt::Level OptLevel,
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bool AllocateGVsWithCode);
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TargetMachine *TM;
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MCContext *Ctx;
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// FIXME: These may need moved to a separate 'jitstate' member like the
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// non-MC JIT does for multithreading and such. Just keep them here for now.
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PassManager PM;
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Module *M;
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// FIXME: This really doesn't belong here.
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SmallVector<char, 4096> Buffer; // Working buffer into which we JIT.
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raw_svector_ostream OS;
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public:
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~MCJIT();
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/// @name ExecutionEngine interface implementation
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/// @{
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virtual void *getPointerToBasicBlock(BasicBlock *BB);
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virtual void *getPointerToFunction(Function *F);
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virtual void *recompileAndRelinkFunction(Function *F);
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virtual void freeMachineCodeForFunction(Function *F);
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virtual GenericValue runFunction(Function *F,
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const std::vector<GenericValue> &ArgValues);
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/// @}
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/// @name (Private) Registration Interfaces
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/// @{
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static void Register() {
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MCJITCtor = createJIT;
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}
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// FIXME: This routine is scheduled for termination. Do not use it.
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static TargetMachine *selectTarget(Module *M,
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StringRef MArch,
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StringRef MCPU,
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const SmallVectorImpl<std::string>& MAttrs,
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std::string *Err);
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static ExecutionEngine *createJIT(Module *M,
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std::string *ErrorStr,
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JITMemoryManager *JMM,
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CodeGenOpt::Level OptLevel,
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bool GVsWithCode,
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CodeModel::Model CMM,
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StringRef MArch,
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StringRef MCPU,
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const SmallVectorImpl<std::string>& MAttrs);
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// @}
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};
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} // End llvm namespace
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#endif
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