1 //===-- AuxVector.h ---------------------------------------------*- C++ -*-===//
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
7 //===----------------------------------------------------------------------===//
9 #ifndef liblldb_AuxVector_H_
10 #define liblldb_AuxVector_H_
12 #include "lldb/Utility/DataExtractor.h"
13 #include "lldb/Utility/Log.h"
14 #include <unordered_map>
19 AuxVector(const lldb_private::DataExtractor &data);
21 /// Constants describing the type of entry.
22 /// On Linux, running "LD_SHOW_AUXV=1 ./executable" will spew AUX
23 /// information. Added AUXV prefix to avoid potential conflicts with system-
26 AUXV_AT_NULL = 0, ///< End of auxv.
27 AUXV_AT_IGNORE = 1, ///< Ignore entry.
28 AUXV_AT_EXECFD = 2, ///< File descriptor of program.
29 AUXV_AT_PHDR = 3, ///< Program headers.
30 AUXV_AT_PHENT = 4, ///< Size of program header.
31 AUXV_AT_PHNUM = 5, ///< Number of program headers.
32 AUXV_AT_PAGESZ = 6, ///< Page size.
33 AUXV_AT_BASE = 7, ///< Interpreter base address.
34 AUXV_AT_FLAGS = 8, ///< Flags.
35 AUXV_AT_ENTRY = 9, ///< Program entry point.
36 AUXV_AT_NOTELF = 10, ///< Set if program is not an ELF.
37 AUXV_AT_UID = 11, ///< UID.
38 AUXV_AT_EUID = 12, ///< Effective UID.
39 AUXV_AT_GID = 13, ///< GID.
40 AUXV_AT_EGID = 14, ///< Effective GID.
41 AUXV_AT_CLKTCK = 17, ///< Clock frequency (e.g. times(2)).
42 AUXV_AT_PLATFORM = 15, ///< String identifying platform.
44 16, ///< Machine dependent hints about processor capabilities.
45 AUXV_AT_FPUCW = 18, ///< Used FPU control word.
46 AUXV_AT_DCACHEBSIZE = 19, ///< Data cache block size.
47 AUXV_AT_ICACHEBSIZE = 20, ///< Instruction cache block size.
48 AUXV_AT_UCACHEBSIZE = 21, ///< Unified cache block size.
49 AUXV_AT_IGNOREPPC = 22, ///< Entry should be ignored.
50 AUXV_AT_SECURE = 23, ///< Boolean, was exec setuid-like?
51 AUXV_AT_BASE_PLATFORM = 24, ///< String identifying real platforms.
52 AUXV_AT_RANDOM = 25, ///< Address of 16 random bytes.
53 AUXV_AT_EXECFN = 31, ///< Filename of executable.
54 AUXV_AT_SYSINFO = 32, ///< Pointer to the global system page used for system
55 /// calls and other nice things.
56 AUXV_AT_SYSINFO_EHDR = 33,
57 AUXV_AT_L1I_CACHESHAPE = 34, ///< Shapes of the caches.
58 AUXV_AT_L1D_CACHESHAPE = 35,
59 AUXV_AT_L2_CACHESHAPE = 36,
60 AUXV_AT_L3_CACHESHAPE = 37,
63 llvm::Optional<uint64_t> GetAuxValue(enum EntryType entry_type) const;
64 void DumpToLog(lldb_private::Log *log) const;
65 const char *GetEntryName(EntryType type) const;
68 void ParseAuxv(const lldb_private::DataExtractor &data);
70 std::unordered_map<uint64_t, uint64_t> m_auxv_entries;