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| //===- DWARFDebugArangeSet.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_DEBUGINFO_DWARFDEBUGARANGESET_H
#define LLVM_DEBUGINFO_DWARFDEBUGARANGESET_H
#include "llvm/ADT/iterator_range.h"
#include "llvm/Support/DataExtractor.h"
#include <cstdint>
#include <vector>
namespace llvm {
class raw_ostream;
class DWARFDebugArangeSet {
public:
struct Header {
/// The total length of the entries for that set, not including the length
/// field itself.
uint32_t Length;
/// The offset from the beginning of the .debug_info section of the
/// compilation unit entry referenced by the table.
uint32_t CuOffset;
/// The DWARF version number.
uint16_t Version;
/// The size in bytes of an address on the target architecture. For segmented
/// addressing, this is the size of the offset portion of the address.
uint8_t AddrSize;
/// The size in bytes of a segment descriptor on the target architecture.
/// If the target system uses a flat address space, this value is 0.
uint8_t SegSize;
};
struct Descriptor {
uint64_t Address;
uint64_t Length;
uint64_t getEndAddress() const { return Address + Length; }
void dump(raw_ostream &OS, uint32_t AddressSize) const;
};
private:
using DescriptorColl = std::vector<Descriptor>;
using desc_iterator_range = iterator_range<DescriptorColl::const_iterator>;
uint64_t Offset;
Header HeaderData;
DescriptorColl ArangeDescriptors;
public:
DWARFDebugArangeSet() { clear(); }
void clear();
bool extract(DataExtractor data, uint64_t *offset_ptr);
void dump(raw_ostream &OS) const;
uint32_t getCompileUnitDIEOffset() const { return HeaderData.CuOffset; }
const Header &getHeader() const { return HeaderData; }
desc_iterator_range descriptors() const {
return desc_iterator_range(ArangeDescriptors.begin(),
ArangeDescriptors.end());
}
};
} // end namespace llvm
#endif // LLVM_DEBUGINFO_DWARFDEBUGARANGESET_H
|