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      1 //===- DWARFRelocMap.h ------------------------------------------*- C++ -*-===//
      2 //
      3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
      4 // See https://llvm.org/LICENSE.txt for license information.
      5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
      6 //
      7 //===----------------------------------------------------------------------===//
      8 
      9 #ifndef LLVM_DEBUGINFO_DWARF_DWARFRELOCMAP_H
     10 #define LLVM_DEBUGINFO_DWARF_DWARFRELOCMAP_H
     11 
     12 #include "llvm/ADT/DenseMap.h"
     13 #include "llvm/Object/RelocationResolver.h"
     14 #include <cstdint>
     15 
     16 namespace llvm {
     17 
     18 /// RelocAddrEntry contains relocated value and section index.
     19 /// Section index is -1LL if relocation points to absolute symbol.
     20 struct RelocAddrEntry {
     21   uint64_t SectionIndex;
     22   object::RelocationRef Reloc;
     23   uint64_t SymbolValue;
     24   Optional<object::RelocationRef> Reloc2;
     25   uint64_t SymbolValue2;
     26   object::RelocationResolver Resolver;
     27 };
     28 
     29 /// In place of applying the relocations to the data we've read from disk we use
     30 /// a separate mapping table to the side and checking that at locations in the
     31 /// dwarf where we expect relocated values. This adds a bit of complexity to the
     32 /// dwarf parsing/extraction at the benefit of not allocating memory for the
     33 /// entire size of the debug info sections.
     34 using RelocAddrMap = DenseMap<uint64_t, RelocAddrEntry>;
     35 
     36 } // end namespace llvm
     37 
     38 #endif // LLVM_DEBUGINFO_DWARF_DWARFRELOCMAP_H
     39