| //===- UnwindInfoSection.h ------------------------------------------------===// |
| // |
| // 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_UNWIND_INFO_H |
| #define LLD_MACHO_UNWIND_INFO_H |
| |
| #include "ConcatOutputSection.h" |
| #include "SyntheticSections.h" |
| #include "llvm/ADT/MapVector.h" |
| |
| namespace lld::macho { |
| |
| class UnwindInfoSection : public SyntheticSection { |
| public: |
| // If all functions are free of unwind info, we can omit the unwind info |
| // section entirely. |
| bool isNeeded() const override { return !allEntriesAreOmitted; } |
| void addSymbol(const Defined *); |
| virtual void prepare() = 0; |
| |
| protected: |
| UnwindInfoSection(); |
| |
| llvm::MapVector<std::pair<const InputSection *, uint64_t /*Defined::value*/>, |
| const Defined *> |
| symbols; |
| bool allEntriesAreOmitted = true; |
| }; |
| |
| UnwindInfoSection *makeUnwindInfoSection(); |
| |
| } // namespace lld::macho |
| |
| #endif |