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Editing: EPCGenericRTDyldMemoryManager.h
//===---- EPCGenericRTDyldMemoryManager.h - EPC-based MemMgr ----*- C++ -*-===// // // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. // See https://llvm.org/LICENSE.txt for license information. // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception // //===----------------------------------------------------------------------===// // // Defines a RuntimeDyld::MemoryManager that uses EPC and the ORC runtime // bootstrap functions. // //===----------------------------------------------------------------------===// #ifndef LLVM_EXECUTIONENGINE_ORC_EPCGENERICRTDYLDMEMORYMANAGER_H #define LLVM_EXECUTIONENGINE_ORC_EPCGENERICRTDYLDMEMORYMANAGER_H #include "llvm/ExecutionEngine/Orc/ExecutorProcessControl.h" #include "llvm/ExecutionEngine/RuntimeDyld.h" #define DEBUG_TYPE "orc" namespace llvm { namespace orc { /// Remote-mapped RuntimeDyld-compatible memory manager. class EPCGenericRTDyldMemoryManager : public RuntimeDyld::MemoryManager { public: /// Symbol addresses for memory access. struct SymbolAddrs { ExecutorAddr Instance; ExecutorAddr Reserve; ExecutorAddr Finalize; ExecutorAddr Deallocate; ExecutorAddr RegisterEHFrame; ExecutorAddr DeregisterEHFrame; }; /// Create an EPCGenericRTDyldMemoryManager using the given EPC, looking up /// the default symbol names in the bootstrap symbol set. static Expected<std::unique_ptr<EPCGenericRTDyldMemoryManager>> CreateWithDefaultBootstrapSymbols(ExecutorProcessControl &EPC); /// Create an EPCGenericRTDyldMemoryManager using the given EPC and symbol /// addrs. EPCGenericRTDyldMemoryManager(ExecutorProcessControl &EPC, SymbolAddrs SAs); EPCGenericRTDyldMemoryManager(const EPCGenericRTDyldMemoryManager &) = delete; EPCGenericRTDyldMemoryManager & operator=(const EPCGenericRTDyldMemoryManager &) = delete; EPCGenericRTDyldMemoryManager(EPCGenericRTDyldMemoryManager &&) = delete; EPCGenericRTDyldMemoryManager & operator=(EPCGenericRTDyldMemoryManager &&) = delete; ~EPCGenericRTDyldMemoryManager(); uint8_t *allocateCodeSection(uintptr_t Size, unsigned Alignment, unsigned SectionID, StringRef SectionName) override; uint8_t *allocateDataSection(uintptr_t Size, unsigned Alignment, unsigned SectionID, StringRef SectionName, bool IsReadOnly) override; void reserveAllocationSpace(uintptr_t CodeSize, Align CodeAlign, uintptr_t RODataSize, Align RODataAlign, uintptr_t RWDataSize, Align RWDataAlign) override; bool needsToReserveAllocationSpace() override; void registerEHFrames(uint8_t *Addr, uint64_t LoadAddr, size_t Size) override; void deregisterEHFrames() override; void notifyObjectLoaded(RuntimeDyld &Dyld, const object::ObjectFile &Obj) override; bool finalizeMemory(std::string *ErrMsg = nullptr) override; private: struct SectionAlloc { public: SectionAlloc(uint64_t Size, unsigned Align) : Size(Size), Align(Align), Contents(std::make_unique<uint8_t[]>(Size + Align - 1)) {} uint64_t Size; unsigned Align; std::unique_ptr<uint8_t[]> Contents; ExecutorAddr RemoteAddr; }; // Group of section allocations to be allocated together in the executor. The // RemoteCodeAddr will stand in as the id of the group for deallocation // purposes. struct SectionAllocGroup { SectionAllocGroup() = default; SectionAllocGroup(const SectionAllocGroup &) = delete; SectionAllocGroup &operator=(const SectionAllocGroup &) = delete; SectionAllocGroup(SectionAllocGroup &&) = default; SectionAllocGroup &operator=(SectionAllocGroup &&) = default; ExecutorAddrRange RemoteCode; ExecutorAddrRange RemoteROData; ExecutorAddrRange RemoteRWData; std::vector<ExecutorAddrRange> UnfinalizedEHFrames; std::vector<SectionAlloc> CodeAllocs, RODataAllocs, RWDataAllocs; }; // Maps all allocations in SectionAllocs to aligned blocks void mapAllocsToRemoteAddrs(RuntimeDyld &Dyld, std::vector<SectionAlloc> &SecAllocs, ExecutorAddr NextAddr); ExecutorProcessControl &EPC; SymbolAddrs SAs; std::mutex M; std::vector<SectionAllocGroup> Unmapped; std::vector<SectionAllocGroup> Unfinalized; std::vector<ExecutorAddr> FinalizedAllocs; std::string ErrMsg; }; } // end namespace orc } // end namespace llvm #undef DEBUG_TYPE #endif // LLVM_EXECUTIONENGINE_ORC_EPCGENERICRTDYLDMEMORYMANAGER_H
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