| //===-- AuxVector.h ---------------------------------------------*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef liblldb_AuxVector_H_ |
| #define liblldb_AuxVector_H_ |
| |
| // C Includes |
| // C++ Includes |
| #include <vector> |
| |
| // Other libraries and framework includes |
| #include "lldb/lldb-forward.h" |
| |
| namespace lldb_private { |
| class DataExtractor; |
| } |
| |
| /// @class AuxVector |
| /// @brief Represents a processes auxiliary vector. |
| /// |
| /// When a process is loaded on Linux a vector of values is placed onto the |
| /// stack communicating operating system specific information. On construction |
| /// this class locates and parses this information and provides a simple |
| /// read-only interface to the entries found. |
| class AuxVector { |
| |
| public: |
| AuxVector(lldb_private::Process *process); |
| |
| struct Entry { |
| uint64_t type; |
| uint64_t value; |
| |
| Entry() : type(0), value(0) { } |
| }; |
| |
| /// Constants describing the type of entry. |
| /// On Linux, running "LD_SHOW_AUXV=1 ./executable" will spew AUX information. |
| enum EntryType { |
| AT_NULL = 0, ///< End of auxv. |
| AT_IGNORE = 1, ///< Ignore entry. |
| AT_EXECFD = 2, ///< File descriptor of program. |
| AT_PHDR = 3, ///< Program headers. |
| AT_PHENT = 4, ///< Size of program header. |
| AT_PHNUM = 5, ///< Number of program headers. |
| AT_PAGESZ = 6, ///< Page size. |
| AT_BASE = 7, ///< Interpreter base address. |
| AT_FLAGS = 8, ///< Flags. |
| AT_ENTRY = 9, ///< Program entry point. |
| AT_NOTELF = 10, ///< Set if program is not an ELF. |
| AT_UID = 11, ///< UID. |
| AT_EUID = 12, ///< Effective UID. |
| AT_GID = 13, ///< GID. |
| AT_EGID = 14, ///< Effective GID. |
| AT_CLKTCK = 17, ///< Clock frequency (e.g. times(2)). |
| AT_PLATFORM = 15, ///< String identifying platform. |
| AT_HWCAP = 16, ///< Machine dependent hints about processor capabilities. |
| AT_FPUCW = 18, ///< Used FPU control word. |
| AT_DCACHEBSIZE = 19, ///< Data cache block size. |
| AT_ICACHEBSIZE = 20, ///< Instruction cache block size. |
| AT_UCACHEBSIZE = 21, ///< Unified cache block size. |
| AT_IGNOREPPC = 22, ///< Entry should be ignored. |
| AT_SECURE = 23, ///< Boolean, was exec setuid-like? |
| AT_BASE_PLATFORM = 24, ///< String identifying real platforms. |
| AT_RANDOM = 25, ///< Address of 16 random bytes. |
| AT_EXECFN = 31, ///< Filename of executable. |
| AT_SYSINFO = 32, ///< Pointer to the global system page used for system calls and other nice things. |
| AT_SYSINFO_EHDR = 33, |
| AT_L1I_CACHESHAPE = 34, ///< Shapes of the caches. |
| AT_L1D_CACHESHAPE = 35, |
| AT_L2_CACHESHAPE = 36, |
| AT_L3_CACHESHAPE = 37, |
| }; |
| |
| private: |
| typedef std::vector<Entry> EntryVector; |
| |
| public: |
| typedef EntryVector::const_iterator iterator; |
| |
| iterator begin() const { return m_auxv.begin(); } |
| iterator end() const { return m_auxv.end(); } |
| |
| iterator |
| FindEntry(EntryType type) const; |
| |
| static const char * |
| GetEntryName(const Entry &entry) { |
| return GetEntryName(static_cast<EntryType>(entry.type)); |
| } |
| |
| static const char * |
| GetEntryName(EntryType type); |
| |
| void |
| DumpToLog(lldb_private::Log *log) const; |
| |
| private: |
| lldb_private::Process *m_process; |
| EntryVector m_auxv; |
| |
| lldb::DataBufferSP |
| GetAuxvData(); |
| |
| void |
| ParseAuxv(lldb_private::DataExtractor &data); |
| }; |
| |
| #endif |