| //===- InputSection.h -------------------------------------------*- 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 |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLD_MACHO_INPUT_SECTION_H |
| #define LLD_MACHO_INPUT_SECTION_H |
| |
| #include "lld/Common/LLVM.h" |
| #include "llvm/ADT/ArrayRef.h" |
| #include "llvm/ADT/PointerUnion.h" |
| #include "llvm/BinaryFormat/MachO.h" |
| |
| namespace lld { |
| namespace macho { |
| |
| class InputFile; |
| class InputSection; |
| class OutputSection; |
| class Symbol; |
| |
| struct Reloc { |
| uint8_t type; |
| bool pcrel; |
| uint8_t length; |
| // The offset from the start of the subsection that this relocation belongs |
| // to. |
| uint32_t offset; |
| // Adding this offset to the address of the target symbol or subsection gives |
| // the destination that this relocation refers to. |
| uint64_t addend; |
| llvm::PointerUnion<Symbol *, InputSection *> target; |
| }; |
| |
| inline bool isZeroFill(uint8_t flags) { |
| return (flags & llvm::MachO::SECTION_TYPE) == llvm::MachO::S_ZEROFILL; |
| } |
| |
| class InputSection { |
| public: |
| virtual ~InputSection() = default; |
| virtual uint64_t getSize() const { return data.size(); } |
| virtual uint64_t getFileSize() const { |
| return isZeroFill(flags) ? 0 : getSize(); |
| } |
| uint64_t getFileOffset() const; |
| uint64_t getVA() const; |
| |
| virtual void writeTo(uint8_t *buf); |
| |
| InputFile *file = nullptr; |
| StringRef name; |
| StringRef segname; |
| |
| OutputSection *parent = nullptr; |
| uint64_t outSecOff = 0; |
| uint64_t outSecFileOff = 0; |
| |
| uint32_t align = 1; |
| uint32_t flags = 0; |
| |
| ArrayRef<uint8_t> data; |
| std::vector<Reloc> relocs; |
| }; |
| |
| extern std::vector<InputSection *> inputSections; |
| |
| } // namespace macho |
| } // namespace lld |
| |
| #endif |