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//===- 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 "mach-o/compact_unwind_encoding.h"
namespace lld {
namespace macho {
template <class Ptr> struct CompactUnwindEntry {
Ptr functionAddress;
uint32_t functionLength;
compact_unwind_encoding_t encoding;
Ptr personality;
Ptr lsda;
};
class UnwindInfoSection : public SyntheticSection {
public:
bool isNeeded() const override {
return !compactUnwindSection->inputs.empty() && !allEntriesAreOmitted;
}
uint64_t getSize() const override { return unwindInfoSize; }
virtual void addInput(ConcatInputSection *) = 0;
std::vector<ConcatInputSection *> getInputs() {
return compactUnwindSection->inputs;
}
void prepareRelocations();
protected:
UnwindInfoSection();
virtual void prepareRelocations(ConcatInputSection *) = 0;
ConcatOutputSection *compactUnwindSection;
uint64_t unwindInfoSize = 0;
bool allEntriesAreOmitted = true;
};
UnwindInfoSection *makeUnwindInfoSection();
} // namespace macho
} // namespace lld
#endif
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