1 //===-- NativeProcessELF.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 liblldb_NativeProcessELF_H_
10 #define liblldb_NativeProcessELF_H_
11 
12 #include "Plugins/Process/Utility/AuxVector.h"
13 #include "lldb/Host/common/NativeProcessProtocol.h"
14 #include "llvm/BinaryFormat/ELF.h"
15 
16 namespace lldb_private {
17 
18 /// \class NativeProcessELF
19 /// Abstract class that extends \a NativeProcessProtocol with ELF specific
20 /// logic. Meant to be subclassed by ELF based NativeProcess* implementations.
21 class NativeProcessELF : public NativeProcessProtocol {
22   using NativeProcessProtocol::NativeProcessProtocol;
23 
24 public:
25   llvm::Optional<uint64_t> GetAuxValue(enum AuxVector::EntryType type);
26 
27 protected:
28   template <typename T> struct ELFLinkMap {
29     T l_addr;
30     T l_name;
31     T l_ld;
32     T l_next;
33     T l_prev;
34   };
35 
36   lldb::addr_t GetSharedLibraryInfoAddress() override;
37 
38   template <typename ELF_EHDR, typename ELF_PHDR, typename ELF_DYN>
39   lldb::addr_t GetELFImageInfoAddress();
40 
41   llvm::Expected<std::vector<SVR4LibraryInfo>>
42   GetLoadedSVR4Libraries() override;
43 
44   template <typename T>
45   llvm::Expected<SVR4LibraryInfo>
46   ReadSVR4LibraryInfo(lldb::addr_t link_map_addr);
47 
48   std::unique_ptr<AuxVector> m_aux_vector;
49   llvm::Optional<lldb::addr_t> m_shared_library_info_addr;
50 };
51 
52 // Explicitly declare the two 32/64 bit templates that NativeProcessELF.cpp will
53 // define. This allows us to keep the template definition here and usable
54 // elsewhere.
55 extern template lldb::addr_t NativeProcessELF::GetELFImageInfoAddress<
56     llvm::ELF::Elf32_Ehdr, llvm::ELF::Elf32_Phdr, llvm::ELF::Elf32_Dyn>();
57 extern template lldb::addr_t NativeProcessELF::GetELFImageInfoAddress<
58     llvm::ELF::Elf64_Ehdr, llvm::ELF::Elf64_Phdr, llvm::ELF::Elf64_Dyn>();
59 
60 } // namespace lldb_private
61 
62 #endif
63