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 16namespace llvm { 17 18/// RelocAddrEntry contains relocated value and section index. 19/// Section index is -1LL if relocation points to absolute symbol. 20struct 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. 34using RelocAddrMap = DenseMap<uint64_t, RelocAddrEntry>; 35 36} // end namespace llvm 37 38#endif // LLVM_DEBUGINFO_DWARF_DWARFRELOCMAP_H 39