| //===- DWARFDebugRnglists.h -------------------------------------*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_DEBUGINFO_DWARFDEBUGRNGLISTS_H |
| #define LLVM_DEBUGINFO_DWARFDEBUGRNGLISTS_H |
| |
| #include "llvm/DebugInfo/DIContext.h" |
| #include "llvm/DebugInfo/DWARF/DWARFDataExtractor.h" |
| #include "llvm/DebugInfo/DWARF/DWARFDebugRangeList.h" |
| #include <cstdint> |
| #include <vector> |
| |
| namespace llvm { |
| |
| class Error; |
| class raw_ostream; |
| |
| class DWARFDebugRnglists { |
| private: |
| struct Header { |
| /// The total length of the entries for this table, not including the length |
| /// field itself. |
| uint32_t Length = 0; |
| /// 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 selector on the target architecture. |
| /// If the target system uses a flat address space, this value is 0. |
| uint8_t SegSize; |
| /// The number of offsets that follow the header before the range lists. |
| uint32_t OffsetEntryCount; |
| }; |
| |
| public: |
| struct RangeListEntry { |
| /// The offset at which the entry is located in the section. |
| const uint32_t Offset; |
| /// The DWARF encoding (DW_RLE_*). |
| const uint8_t EntryKind; |
| /// The values making up the range list entry. Most represent a range with |
| /// a start and end address or a start address and a length. Others are |
| /// single value base addresses or end-of-list with no values. The unneeded |
| /// values are semantically undefined, but initialized to 0. |
| const uint64_t Value0; |
| const uint64_t Value1; |
| }; |
| |
| using DWARFRangeList = std::vector<RangeListEntry>; |
| |
| private: |
| uint32_t HeaderOffset; |
| Header HeaderData; |
| std::vector<uint32_t> Offsets; |
| std::vector<DWARFRangeList> Ranges; |
| // The length of the longest encoding string we encountered during parsing. |
| uint8_t MaxEncodingStringLength = 0; |
| |
| public: |
| void clear(); |
| Error extract(DWARFDataExtractor Data, uint32_t *OffsetPtr); |
| uint32_t getHeaderOffset() const { return HeaderOffset; } |
| void dump(raw_ostream &OS, DIDumpOptions DumpOpts) const; |
| |
| /// Returns the length of this table, including the length field, or 0 if the |
| /// length has not been determined (e.g. because the table has not yet been |
| /// parsed, or there was a problem in parsing). |
| uint32_t length() const; |
| }; |
| |
| } // end namespace llvm |
| |
| #endif // LLVM_DEBUGINFO_DWARFDEBUGRNGLISTS_H |