Adding support and tests for multiple module handling in lli
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191938 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/lli/RemoteMemoryManager.h b/tools/lli/RemoteMemoryManager.h
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+++ b/tools/lli/RemoteMemoryManager.h
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+//===- RemoteMemoryManager.h - LLI MCJIT recording memory manager ------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This memory manager allocates local storage and keeps a record of each
+// allocation. Iterators are provided for all data and code allocations.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef REMOTEMEMORYMANAGER_H
+#define REMOTEMEMORYMANAGER_H
+
+#include "llvm/ADT/DenseMap.h"
+#include "llvm/ADT/SmallVector.h"
+#include "llvm/ExecutionEngine/JITMemoryManager.h"
+#include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/Memory.h"
+#include <utility>
+
+#include "RemoteTarget.h"
+
+namespace llvm {
+
+class RemoteMemoryManager : public JITMemoryManager {
+public:
+ // Notice that this structure takes ownership of the memory allocated.
+ struct Allocation {
+ Allocation(sys::MemoryBlock mb, unsigned a, bool code)
+ : MB(mb), Alignment(a), IsCode(code) {}
+
+ sys::MemoryBlock MB;
+ unsigned Alignment;
+ bool IsCode;
+ };
+
+private:
+ // This vector contains Allocation objects for all sections which we have
+ // allocated. This vector effectively owns the memory associated with the
+ // allocations.
+ SmallVector<Allocation, 2> AllocatedSections;
+
+ // This vector contains pointers to Allocation objects for any sections we
+ // have allocated locally but have not yet remapped for the remote target.
+ // When we receive notification of a completed module load, we will map
+ // these sections into the remote target.
+ SmallVector<const Allocation *, 2> UnmappedSections;
+
+ // This map tracks the sections we have remapped for the remote target
+ // but have not yet copied to the target.
+ DenseMap<uint64_t, const Allocation *> MappedSections;
+
+ // FIXME: This is part of a work around to keep sections near one another
+ // when MCJIT performs relocations after code emission but before
+ // the generated code is moved to the remote target.
+ sys::MemoryBlock Near;
+ sys::MemoryBlock allocateSection(uintptr_t Size);
+
+ RemoteTarget *Target;
+
+public:
+ RemoteMemoryManager() : Target(NULL) {}
+ virtual ~RemoteMemoryManager();
+
+ uint8_t *allocateCodeSection(uintptr_t Size, unsigned Alignment,
+ unsigned SectionID, StringRef SectionName);
+
+ uint8_t *allocateDataSection(uintptr_t Size, unsigned Alignment,
+ unsigned SectionID, StringRef SectionName,
+ bool IsReadOnly);
+
+ void *getPointerToNamedFunction(const std::string &Name,
+ bool AbortOnFailure = true);
+
+ void notifyObjectLoaded(ExecutionEngine *EE, const ObjectImage *Obj);
+
+ bool finalizeMemory(std::string *ErrMsg);
+
+ // This is a non-interface function used by lli
+ void setRemoteTarget(RemoteTarget *T) { Target = T; }
+
+ // The following obsolete JITMemoryManager calls are stubbed out for
+ // this model.
+ void setMemoryWritable();
+ void setMemoryExecutable();
+ void setPoisonMemory(bool poison);
+ void AllocateGOT();
+ uint8_t *getGOTBase() const;
+ uint8_t *startFunctionBody(const Function *F, uintptr_t &ActualSize);
+ uint8_t *allocateStub(const GlobalValue* F, unsigned StubSize,
+ unsigned Alignment);
+ void endFunctionBody(const Function *F, uint8_t *FunctionStart,
+ uint8_t *FunctionEnd);
+ uint8_t *allocateSpace(intptr_t Size, unsigned Alignment);
+ uint8_t *allocateGlobal(uintptr_t Size, unsigned Alignment);
+ void deallocateFunctionBody(void *Body);
+};
+
+} // end namespace llvm
+
+#endif