forked from OSchip/llvm-project
98 lines
2.7 KiB
C++
98 lines
2.7 KiB
C++
//===-- AuxVector.h ---------------------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#ifndef liblldb_AuxVector_H_
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#define liblldb_AuxVector_H_
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// C Includes
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// C++ Includes
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#include <vector>
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// Other libraries and framework includes
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#include "lldb/lldb-forward-rtti.h"
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namespace lldb_private {
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class DataExtractor;
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}
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/// @class AuxVector
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/// @brief Represents a processes auxiliary vector.
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///
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/// When a process is loaded on Linux a vector of values is placed onto the
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/// stack communicating operating system specific information. On construction
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/// this class locates and parses this information and provides a simple
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/// read-only interface to the entries found.
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class AuxVector {
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public:
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AuxVector(lldb_private::Process *process);
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struct Entry {
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uint64_t type;
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uint64_t value;
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Entry() : type(0), value(0) { }
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};
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/// Constants describing the type of entry.
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enum EntryType {
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AT_NULL = 0, ///< End of auxv.
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AT_IGNORE = 1, ///< Ignore entry.
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AT_EXECFD = 2, ///< File descriptor of program.
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AT_PHDR = 3, ///< Program headers.
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AT_PHENT = 4, ///< Size of program header.
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AT_PHNUM = 5, ///< Number of program headers.
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AT_PAGESZ = 6, ///< Page size.
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AT_BASE = 7, ///< Interpreter base address.
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AT_FLAGS = 8, ///< Flags.
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AT_ENTRY = 9, ///< Program entry point.
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AT_NOTELF = 10, ///< Set if program is not an ELF.
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AT_UID = 11, ///< UID.
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AT_EUID = 12, ///< Effective UID.
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AT_GID = 13, ///< GID.
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AT_EGID = 14, ///< Effective GID.
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AT_CLKTCK = 17 ///< Clock frequency (e.g. times(2)).
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};
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private:
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typedef std::vector<Entry> EntryVector;
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public:
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typedef EntryVector::const_iterator iterator;
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iterator begin() const { return m_auxv.begin(); }
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iterator end() const { return m_auxv.end(); }
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iterator
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FindEntry(EntryType type) const;
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static const char *
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GetEntryName(const Entry &entry) {
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return GetEntryName(static_cast<EntryType>(entry.type));
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}
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static const char *
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GetEntryName(EntryType type);
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void
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DumpToLog(lldb::LogSP log) const;
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private:
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lldb_private::Process *m_process;
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EntryVector m_auxv;
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lldb::DataBufferSP
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GetAuxvData();
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void
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ParseAuxv(lldb_private::DataExtractor &data);
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};
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#endif
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