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//===- OutputSections.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 LLVM_LIB_DWARFLINKERPARALLEL_OUTPUTSECTIONS_H
#define LLVM_LIB_DWARFLINKERPARALLEL_OUTPUTSECTIONS_H
#include "llvm/ADT/StringRef.h"
#include <array>
#include <cstdint>
namespace llvm {
namespace dwarflinker_parallel {
/// This class keeps offsets to the debug sections. Any object which is
/// supposed to be emitted into the debug section should use this class to
/// track debug sections offsets.
class OutputSections {
public:
/// List of tracked debug sections.
enum class DebugSectionKind : uint8_t {
DebugInfo = 0,
DebugLine,
DebugFrame,
DebugRange,
DebugRngLists,
DebugLoc,
DebugLocLists,
DebugARanges,
DebugAbbrev,
DebugMacinfo,
DebugMacro,
};
constexpr static size_t SectionKindsNum = 11;
/// Recognise the section name and match it with the DebugSectionKind.
static std::optional<DebugSectionKind> parseDebugSectionName(StringRef Name);
/// When objects(f.e. compile units) are glued into the single file,
/// the debug sections corresponding to the concrete object are assigned
/// with offsets inside the whole file. This method returns offset
/// to the \p SectionKind debug section, corresponding to this object.
uint64_t getStartOffset(DebugSectionKind SectionKind) const {
return Offsets[static_cast<
typename std::underlying_type<DebugSectionKind>::type>(SectionKind)];
}
/// Set offset to the start of specified \p SectionKind debug section,
/// corresponding to this object.
void setStartOffset(DebugSectionKind SectionKind, uint64_t Offset) {
Offsets[static_cast<typename std::underlying_type<DebugSectionKind>::type>(
SectionKind)] = Offset;
}
protected:
/// Offsets to the debug sections composing this object.
std::array<uint64_t, SectionKindsNum> Offsets = {0};
};
} // end of namespace dwarflinker_parallel
} // end namespace llvm
#endif // LLVM_LIB_DWARFLINKERPARALLEL_OUTPUTSECTIONS_H
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