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UnwindInfoSection.h
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UnwindInfoSection.h
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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"
#include "llvm/ADT/DenseMap.h"
#include <vector>
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 != nullptr; }
uint64_t getSize() const override { return unwindInfoSize; }
virtual void prepareRelocations(ConcatInputSection *) = 0;
void setCompactUnwindSection(ConcatOutputSection *cuSection) {
compactUnwindSection = cuSection;
}
protected:
UnwindInfoSection()
: SyntheticSection(segment_names::text, section_names::unwindInfo) {
align = 4;
}
ConcatOutputSection *compactUnwindSection = nullptr;
uint64_t unwindInfoSize = 0;
};
UnwindInfoSection *makeUnwindInfoSection();
} // namespace macho
} // namespace lld
#endif