forked from OSchip/llvm-project
83 lines
2.0 KiB
C++
83 lines
2.0 KiB
C++
//===- InputSection.h -------------------------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLD_MACHO_INPUT_SECTION_H
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#define LLD_MACHO_INPUT_SECTION_H
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#include "lld/Common/LLVM.h"
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#include "llvm/ADT/ArrayRef.h"
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#include "llvm/ADT/PointerUnion.h"
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#include "llvm/BinaryFormat/MachO.h"
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namespace lld {
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namespace macho {
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class InputFile;
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class InputSection;
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class OutputSection;
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class Symbol;
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struct Reloc {
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uint8_t type;
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bool pcrel;
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uint8_t length;
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// The offset from the start of the subsection that this relocation belongs
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// to.
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uint32_t offset;
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// Adding this offset to the address of the referent symbol or subsection
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// gives the destination that this relocation refers to.
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uint64_t addend;
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llvm::PointerUnion<Symbol *, InputSection *> referent;
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};
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inline bool isZeroFill(uint8_t flags) {
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return llvm::MachO::isVirtualSection(flags & llvm::MachO::SECTION_TYPE);
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}
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inline bool isThreadLocalVariables(uint8_t flags) {
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return (flags & llvm::MachO::SECTION_TYPE) ==
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llvm::MachO::S_THREAD_LOCAL_VARIABLES;
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}
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class InputSection {
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public:
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virtual ~InputSection() = default;
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virtual uint64_t getSize() const { return data.size(); }
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virtual uint64_t getFileSize() const {
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return isZeroFill(flags) ? 0 : getSize();
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}
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uint64_t getFileOffset() const;
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uint64_t getVA() const;
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virtual void writeTo(uint8_t *buf);
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InputFile *file = nullptr;
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StringRef name;
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StringRef segname;
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OutputSection *parent = nullptr;
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uint64_t outSecOff = 0;
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uint64_t outSecFileOff = 0;
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uint32_t align = 1;
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uint32_t flags = 0;
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ArrayRef<uint8_t> data;
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std::vector<Reloc> relocs;
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};
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extern std::vector<InputSection *> inputSections;
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} // namespace macho
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std::string toString(const macho::InputSection *);
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} // namespace lld
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#endif
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