| 1 | //===- DWARFRelocMap.h ------------------------------------------*- C++ -*-===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | #ifndef LLVM_DEBUGINFO_DWARF_DWARFRELOCMAP_H |
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| 10 | #define LLVM_DEBUGINFO_DWARF_DWARFRELOCMAP_H |
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| 11 | |
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| 12 | #include "llvm/ADT/DenseMap.h" |
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| 13 | #include "llvm/Object/ObjectFile.h" |
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| 14 | #include "llvm/Object/RelocationResolver.h" |
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| 15 | #include <cstdint> |
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| 16 | |
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| 17 | namespace llvm { |
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| 18 | |
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| 19 | /// RelocAddrEntry contains relocated value and section index. |
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| 20 | /// Section index is -1LL if relocation points to absolute symbol. |
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| 21 | struct RelocAddrEntry { |
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| 22 | uint64_t SectionIndex; |
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| 23 | object::RelocationRef Reloc; |
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| 24 | uint64_t SymbolValue; |
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| 25 | std::optional<object::RelocationRef> Reloc2; |
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| 26 | uint64_t SymbolValue2; |
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| 27 | object::RelocationResolver Resolver; |
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| 28 | }; |
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| 29 | |
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| 30 | /// In place of applying the relocations to the data we've read from disk we use |
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| 31 | /// a separate mapping table to the side and checking that at locations in the |
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| 32 | /// dwarf where we expect relocated values. This adds a bit of complexity to the |
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| 33 | /// dwarf parsing/extraction at the benefit of not allocating memory for the |
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| 34 | /// entire size of the debug info sections. |
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| 35 | using RelocAddrMap = DenseMap<uint64_t, RelocAddrEntry>; |
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| 36 | |
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| 37 | } // end namespace llvm |
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| 38 | |
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| 39 | #endif // LLVM_DEBUGINFO_DWARF_DWARFRELOCMAP_H |
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| 40 | |
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