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1 //===- UnwindInfoSection.h ------------------------------------------------===//
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2 //
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3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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4 // See https://llvm.org/LICENSE.txt for license information.
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5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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6 //
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7 //===----------------------------------------------------------------------===//
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8
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9 #ifndef LLD_MACHO_UNWIND_INFO_H
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10 #define LLD_MACHO_UNWIND_INFO_H
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11
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12 #include "ConcatOutputSection.h"
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13 #include "SyntheticSections.h"
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236
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14 #include "llvm/ADT/MapVector.h"
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15
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16 namespace lld::macho {
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17
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18 class UnwindInfoSection : public SyntheticSection {
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19 public:
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20 // If all functions are free of unwind info, we can omit the unwind info
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21 // section entirely.
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22 bool isNeeded() const override { return !allEntriesAreOmitted; }
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23 void addSymbol(const Defined *);
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24 virtual void prepare() = 0;
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25
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26 protected:
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27 UnwindInfoSection();
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28
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29 llvm::MapVector<std::pair<const InputSection *, uint64_t /*Defined::value*/>,
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30 const Defined *>
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31 symbols;
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32 bool allEntriesAreOmitted = true;
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33 };
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34
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35 UnwindInfoSection *makeUnwindInfoSection();
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36
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236
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37 } // namespace lld::macho
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221
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38
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39 #endif
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