diff options
Diffstat (limited to 'lib/ExecutionEngine/JITLink/MachOAtomGraphBuilder.h')
-rw-r--r-- | lib/ExecutionEngine/JITLink/MachOAtomGraphBuilder.h | 138 |
1 files changed, 0 insertions, 138 deletions
diff --git a/lib/ExecutionEngine/JITLink/MachOAtomGraphBuilder.h b/lib/ExecutionEngine/JITLink/MachOAtomGraphBuilder.h deleted file mode 100644 index 72d441b24d06..000000000000 --- a/lib/ExecutionEngine/JITLink/MachOAtomGraphBuilder.h +++ /dev/null @@ -1,138 +0,0 @@ -//===----- MachOAtomGraphBuilder.h - MachO AtomGraph builder ----*- 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 -// -//===----------------------------------------------------------------------===// -// -// Generic MachO AtomGraph building code. -// -//===----------------------------------------------------------------------===// - -#ifndef LIB_EXECUTIONENGINE_JITLINK_MACHOATOMGRAPHBUILDER_H -#define LIB_EXECUTIONENGINE_JITLINK_MACHOATOMGRAPHBUILDER_H - -#include "llvm/ExecutionEngine/JITLink/JITLink.h" - -#include "JITLinkGeneric.h" - -#include "llvm/Object/MachO.h" - -namespace llvm { -namespace jitlink { - -class MachOAtomGraphBuilder { -public: - virtual ~MachOAtomGraphBuilder(); - Expected<std::unique_ptr<AtomGraph>> buildGraph(); - -protected: - using OffsetToAtomMap = std::map<JITTargetAddress, DefinedAtom *>; - - class MachOSection { - public: - MachOSection() = default; - - /// Create a MachO section with the given address and alignment. - MachOSection(Section &GenericSection, JITTargetAddress Address, - unsigned Alignment) - : Address(Address), GenericSection(&GenericSection), - Alignment(Alignment) {} - - /// Create a section without address, content or size (used for common - /// symbol sections). - MachOSection(Section &GenericSection) : GenericSection(&GenericSection) {} - - Section &getGenericSection() const { - assert(GenericSection && "Section is null"); - return *GenericSection; - } - - StringRef getName() const { - assert(GenericSection && "No generic section attached"); - return GenericSection->getName(); - } - - MachOSection &setContent(StringRef Content) { - assert(!ContentPtr && !Size && "Content/zeroFill already set"); - ContentPtr = Content.data(); - Size = Content.size(); - return *this; - } - - MachOSection &setZeroFill(uint64_t Size) { - assert(!ContentPtr && !this->Size && "Content/zeroFill already set"); - this->Size = Size; - return *this; - } - - bool isZeroFill() const { return !ContentPtr; } - - bool empty() const { return getSize() == 0; } - - size_t getSize() const { return Size; } - - StringRef getContent() const { - assert(ContentPtr && "getContent() called on zero-fill section"); - return {ContentPtr, static_cast<size_t>(Size)}; - } - - JITTargetAddress getAddress() const { return Address; } - - unsigned getAlignment() const { return Alignment; } - - MachOSection &setNoDeadStrip(bool NoDeadStrip) { - this->NoDeadStrip = NoDeadStrip; - return *this; - } - - bool isNoDeadStrip() const { return NoDeadStrip; } - - private: - JITTargetAddress Address = 0; - Section *GenericSection = nullptr; - const char *ContentPtr = nullptr; - uint64_t Size = 0; - unsigned Alignment = 0; - bool NoDeadStrip = false; - }; - - using CustomAtomizeFunction = std::function<Error(MachOSection &S)>; - - MachOAtomGraphBuilder(const object::MachOObjectFile &Obj); - - AtomGraph &getGraph() const { return *G; } - - const object::MachOObjectFile &getObject() const { return Obj; } - - void addCustomAtomizer(StringRef SectionName, CustomAtomizeFunction Atomizer); - - virtual Error addRelocations() = 0; - - /// Returns true if Atom A and Atom B are at a fixed offset from one another - /// (i.e. if they're part of the same alt-entry chain). - bool areLayoutLocked(const Atom &A, const Atom &B); - -private: - static unsigned getPointerSize(const object::MachOObjectFile &Obj); - static support::endianness getEndianness(const object::MachOObjectFile &Obj); - - MachOSection &getCommonSection(); - - Error parseSections(); - Error addNonCustomAtoms(); - Error addAtoms(); - - const object::MachOObjectFile &Obj; - std::unique_ptr<AtomGraph> G; - DenseMap<const DefinedAtom *, const DefinedAtom *> AltEntryStarts; - DenseMap<unsigned, MachOSection> Sections; - StringMap<CustomAtomizeFunction> CustomAtomizeFunctions; - Optional<MachOSection> CommonSymbolsSection; -}; - -} // end namespace jitlink -} // end namespace llvm - -#endif // LIB_EXECUTIONENGINE_JITLINK_MACHOATOMGRAPHBUILDER_H |