| //===- 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 "Relocations.h" |
| |
| #include "lld/Common/LLVM.h" |
| #include "llvm/ADT/ArrayRef.h" |
| #include "llvm/BinaryFormat/MachO.h" |
| |
| namespace lld { |
| namespace macho { |
| |
| class InputFile; |
| class InputSection; |
| class OutputSection; |
| class Symbol; |
| class Defined; |
| |
| class InputSection { |
| public: |
| virtual ~InputSection() = default; |
| virtual uint64_t getSize() const { return data.size(); } |
| virtual uint64_t getFileSize() const; |
| 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; |
| }; |
| |
| inline uint8_t sectionType(uint32_t flags) { |
| return flags & llvm::MachO::SECTION_TYPE; |
| } |
| |
| inline bool isZeroFill(uint32_t flags) { |
| return llvm::MachO::isVirtualSection(sectionType(flags)); |
| } |
| |
| inline bool isThreadLocalVariables(uint32_t flags) { |
| return sectionType(flags) == llvm::MachO::S_THREAD_LOCAL_VARIABLES; |
| } |
| |
| // These sections contain the data for initializing thread-local variables. |
| inline bool isThreadLocalData(uint32_t flags) { |
| return sectionType(flags) == llvm::MachO::S_THREAD_LOCAL_REGULAR || |
| sectionType(flags) == llvm::MachO::S_THREAD_LOCAL_ZEROFILL; |
| } |
| |
| inline bool isDebugSection(uint32_t flags) { |
| return (flags & llvm::MachO::SECTION_ATTRIBUTES_USR) == |
| llvm::MachO::S_ATTR_DEBUG; |
| } |
| |
| bool isCodeSection(InputSection *); |
| |
| extern std::vector<InputSection *> inputSections; |
| |
| namespace section_names { |
| |
| constexpr const char pageZero[] = "__pagezero"; |
| constexpr const char common[] = "__common"; |
| constexpr const char header[] = "__mach_header"; |
| constexpr const char rebase[] = "__rebase"; |
| constexpr const char binding[] = "__binding"; |
| constexpr const char weakBinding[] = "__weak_binding"; |
| constexpr const char lazyBinding[] = "__lazy_binding"; |
| constexpr const char export_[] = "__export"; |
| constexpr const char functionStarts[] = "__func_starts"; |
| constexpr const char symbolTable[] = "__symbol_table"; |
| constexpr const char indirectSymbolTable[] = "__ind_sym_tab"; |
| constexpr const char stringTable[] = "__string_table"; |
| constexpr const char codeSignature[] = "__code_signature"; |
| constexpr const char got[] = "__got"; |
| constexpr const char threadPtrs[] = "__thread_ptrs"; |
| constexpr const char unwindInfo[] = "__unwind_info"; |
| constexpr const char compactUnwind[] = "__compact_unwind"; |
| constexpr const char ehFrame[] = "__eh_frame"; |
| constexpr const char text[] = "__text"; |
| constexpr const char stubs[] = "__stubs"; |
| constexpr const char stubHelper[] = "__stub_helper"; |
| constexpr const char laSymbolPtr[] = "__la_symbol_ptr"; |
| constexpr const char data[] = "__data"; |
| |
| } // namespace section_names |
| |
| } // namespace macho |
| |
| std::string toString(const macho::InputSection *); |
| |
| } // namespace lld |
| |
| #endif |