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 /// 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
29 /// construction this class locates and parses this information and provides a
30 /// simple 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
45 /// information. Added AUXV prefix to avoid potential conflicts with system-
48 AUXV_AT_NULL = 0, ///< End of auxv.
49 AUXV_AT_IGNORE = 1, ///< Ignore entry.
50 AUXV_AT_EXECFD = 2, ///< File descriptor of program.
51 AUXV_AT_PHDR = 3, ///< Program headers.
52 AUXV_AT_PHENT = 4, ///< Size of program header.
53 AUXV_AT_PHNUM = 5, ///< Number of program headers.
54 AUXV_AT_PAGESZ = 6, ///< Page size.
55 AUXV_AT_BASE = 7, ///< Interpreter base address.
56 AUXV_AT_FLAGS = 8, ///< Flags.
57 AUXV_AT_ENTRY = 9, ///< Program entry point.
58 AUXV_AT_NOTELF = 10, ///< Set if program is not an ELF.
59 AUXV_AT_UID = 11, ///< UID.
60 AUXV_AT_EUID = 12, ///< Effective UID.
61 AUXV_AT_GID = 13, ///< GID.
62 AUXV_AT_EGID = 14, ///< Effective GID.
63 AUXV_AT_CLKTCK = 17, ///< Clock frequency (e.g. times(2)).
64 AUXV_AT_PLATFORM = 15, ///< String identifying platform.
65 AUXV_AT_HWCAP = 16, ///< Machine dependent hints about processor capabilities.
66 AUXV_AT_FPUCW = 18, ///< Used FPU control word.
67 AUXV_AT_DCACHEBSIZE = 19, ///< Data cache block size.
68 AUXV_AT_ICACHEBSIZE = 20, ///< Instruction cache block size.
69 AUXV_AT_UCACHEBSIZE = 21, ///< Unified cache block size.
70 AUXV_AT_IGNOREPPC = 22, ///< Entry should be ignored.
71 AUXV_AT_SECURE = 23, ///< Boolean, was exec setuid-like?
72 AUXV_AT_BASE_PLATFORM = 24, ///< String identifying real platforms.
73 AUXV_AT_RANDOM = 25, ///< Address of 16 random bytes.
74 AUXV_AT_EXECFN = 31, ///< Filename of executable.
75 AUXV_AT_SYSINFO = 32, ///< Pointer to the global system page used for system
76 ///calls and other nice things.
77 AUXV_AT_SYSINFO_EHDR = 33,
78 AUXV_AT_L1I_CACHESHAPE = 34, ///< Shapes of the caches.
79 AUXV_AT_L1D_CACHESHAPE = 35,
80 AUXV_AT_L2_CACHESHAPE = 36,
81 AUXV_AT_L3_CACHESHAPE = 37,
85 typedef std::vector<Entry> EntryVector;
88 typedef EntryVector::const_iterator iterator;
90 iterator begin() const { return m_auxv.begin(); }
91 iterator end() const { return m_auxv.end(); }
93 iterator FindEntry(EntryType type) const;
95 static const char *GetEntryName(const Entry &entry) {
96 return GetEntryName(static_cast<EntryType>(entry.type));
99 static const char *GetEntryName(EntryType type);
101 void DumpToLog(lldb_private::Log *log) const;
104 lldb_private::Process *m_process;
107 lldb::DataBufferSP GetAuxvData();
109 void ParseAuxv(lldb_private::DataExtractor &data);