1 //===-- AuxVector.h ---------------------------------------------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #ifndef liblldb_AuxVector_H_
11 #define liblldb_AuxVector_H_
17 // Other libraries and framework includes
18 #include "lldb/lldb-forward.h"
20 namespace lldb_private {
25 /// @brief Represents a processes auxiliary vector.
27 /// When a process is loaded on Linux a vector of values is placed onto the
28 /// stack communicating operating system specific information. On construction
29 /// this class locates and parses this information and provides a simple
30 /// read-only interface to the entries found.
34 AuxVector(lldb_private::Process *process);
40 Entry() : type(0), value(0) { }
43 /// Constants describing the type of entry.
44 /// On Linux, running "LD_SHOW_AUXV=1 ./executable" will spew AUX information.
46 AT_NULL = 0, ///< End of auxv.
47 AT_IGNORE = 1, ///< Ignore entry.
48 AT_EXECFD = 2, ///< File descriptor of program.
49 AT_PHDR = 3, ///< Program headers.
50 AT_PHENT = 4, ///< Size of program header.
51 AT_PHNUM = 5, ///< Number of program headers.
52 AT_PAGESZ = 6, ///< Page size.
53 AT_BASE = 7, ///< Interpreter base address.
54 AT_FLAGS = 8, ///< Flags.
55 AT_ENTRY = 9, ///< Program entry point.
56 AT_NOTELF = 10, ///< Set if program is not an ELF.
57 AT_UID = 11, ///< UID.
58 AT_EUID = 12, ///< Effective UID.
59 AT_GID = 13, ///< GID.
60 AT_EGID = 14, ///< Effective GID.
61 AT_CLKTCK = 17, ///< Clock frequency (e.g. times(2)).
62 AT_PLATFORM = 15, ///< String identifying platform.
63 AT_HWCAP = 16, ///< Machine dependent hints about processor capabilities.
64 AT_FPUCW = 18, ///< Used FPU control word.
65 AT_DCACHEBSIZE = 19, ///< Data cache block size.
66 AT_ICACHEBSIZE = 20, ///< Instruction cache block size.
67 AT_UCACHEBSIZE = 21, ///< Unified cache block size.
68 AT_IGNOREPPC = 22, ///< Entry should be ignored.
69 AT_SECURE = 23, ///< Boolean, was exec setuid-like?
70 AT_BASE_PLATFORM = 24, ///< String identifying real platforms.
71 AT_RANDOM = 25, ///< Address of 16 random bytes.
72 AT_EXECFN = 31, ///< Filename of executable.
73 AT_SYSINFO = 32, ///< Pointer to the global system page used for system calls and other nice things.
75 AT_L1I_CACHESHAPE = 34, ///< Shapes of the caches.
76 AT_L1D_CACHESHAPE = 35,
77 AT_L2_CACHESHAPE = 36,
78 AT_L3_CACHESHAPE = 37,
82 typedef std::vector<Entry> EntryVector;
85 typedef EntryVector::const_iterator iterator;
87 iterator begin() const { return m_auxv.begin(); }
88 iterator end() const { return m_auxv.end(); }
91 FindEntry(EntryType type) const;
94 GetEntryName(const Entry &entry) {
95 return GetEntryName(static_cast<EntryType>(entry.type));
99 GetEntryName(EntryType type);
102 DumpToLog(lldb_private::Log *log) const;
105 lldb_private::Process *m_process;
112 ParseAuxv(lldb_private::DataExtractor &data);