1254721Semaste//===-- AuxVector.h ---------------------------------------------*- C++ -*-===// 2254721Semaste// 3254721Semaste// The LLVM Compiler Infrastructure 4254721Semaste// 5254721Semaste// This file is distributed under the University of Illinois Open Source 6254721Semaste// License. See LICENSE.TXT for details. 7254721Semaste// 8254721Semaste//===----------------------------------------------------------------------===// 9254721Semaste 10254721Semaste#ifndef liblldb_AuxVector_H_ 11254721Semaste#define liblldb_AuxVector_H_ 12254721Semaste 13254721Semaste// C Includes 14254721Semaste// C++ Includes 15254721Semaste#include <vector> 16254721Semaste 17254721Semaste// Other libraries and framework includes 18254721Semaste#include "lldb/lldb-forward.h" 19254721Semaste 20254721Semastenamespace lldb_private { 21254721Semasteclass DataExtractor; 22254721Semaste} 23254721Semaste 24254721Semaste/// @class AuxVector 25254721Semaste/// @brief Represents a processes auxiliary vector. 26254721Semaste/// 27254721Semaste/// When a process is loaded on Linux a vector of values is placed onto the 28254721Semaste/// stack communicating operating system specific information. On construction 29254721Semaste/// this class locates and parses this information and provides a simple 30254721Semaste/// read-only interface to the entries found. 31254721Semasteclass AuxVector { 32254721Semaste 33254721Semastepublic: 34254721Semaste AuxVector(lldb_private::Process *process); 35254721Semaste 36254721Semaste struct Entry { 37254721Semaste uint64_t type; 38254721Semaste uint64_t value; 39254721Semaste 40254721Semaste Entry() : type(0), value(0) { } 41254721Semaste }; 42254721Semaste 43254721Semaste /// Constants describing the type of entry. 44254721Semaste /// On Linux, running "LD_SHOW_AUXV=1 ./executable" will spew AUX information. 45254721Semaste enum EntryType { 46254721Semaste AT_NULL = 0, ///< End of auxv. 47254721Semaste AT_IGNORE = 1, ///< Ignore entry. 48254721Semaste AT_EXECFD = 2, ///< File descriptor of program. 49254721Semaste AT_PHDR = 3, ///< Program headers. 50254721Semaste AT_PHENT = 4, ///< Size of program header. 51254721Semaste AT_PHNUM = 5, ///< Number of program headers. 52254721Semaste AT_PAGESZ = 6, ///< Page size. 53254721Semaste AT_BASE = 7, ///< Interpreter base address. 54254721Semaste AT_FLAGS = 8, ///< Flags. 55254721Semaste AT_ENTRY = 9, ///< Program entry point. 56254721Semaste AT_NOTELF = 10, ///< Set if program is not an ELF. 57254721Semaste AT_UID = 11, ///< UID. 58254721Semaste AT_EUID = 12, ///< Effective UID. 59254721Semaste AT_GID = 13, ///< GID. 60254721Semaste AT_EGID = 14, ///< Effective GID. 61254721Semaste AT_CLKTCK = 17, ///< Clock frequency (e.g. times(2)). 62254721Semaste AT_PLATFORM = 15, ///< String identifying platform. 63254721Semaste AT_HWCAP = 16, ///< Machine dependent hints about processor capabilities. 64254721Semaste AT_FPUCW = 18, ///< Used FPU control word. 65254721Semaste AT_DCACHEBSIZE = 19, ///< Data cache block size. 66254721Semaste AT_ICACHEBSIZE = 20, ///< Instruction cache block size. 67254721Semaste AT_UCACHEBSIZE = 21, ///< Unified cache block size. 68254721Semaste AT_IGNOREPPC = 22, ///< Entry should be ignored. 69254721Semaste AT_SECURE = 23, ///< Boolean, was exec setuid-like? 70254721Semaste AT_BASE_PLATFORM = 24, ///< String identifying real platforms. 71254721Semaste AT_RANDOM = 25, ///< Address of 16 random bytes. 72254721Semaste AT_EXECFN = 31, ///< Filename of executable. 73254721Semaste AT_SYSINFO = 32, ///< Pointer to the global system page used for system calls and other nice things. 74254721Semaste AT_SYSINFO_EHDR = 33, 75254721Semaste AT_L1I_CACHESHAPE = 34, ///< Shapes of the caches. 76254721Semaste AT_L1D_CACHESHAPE = 35, 77254721Semaste AT_L2_CACHESHAPE = 36, 78254721Semaste AT_L3_CACHESHAPE = 37, 79254721Semaste }; 80254721Semaste 81254721Semasteprivate: 82254721Semaste typedef std::vector<Entry> EntryVector; 83254721Semaste 84254721Semastepublic: 85254721Semaste typedef EntryVector::const_iterator iterator; 86254721Semaste 87254721Semaste iterator begin() const { return m_auxv.begin(); } 88254721Semaste iterator end() const { return m_auxv.end(); } 89254721Semaste 90254721Semaste iterator 91254721Semaste FindEntry(EntryType type) const; 92254721Semaste 93254721Semaste static const char * 94254721Semaste GetEntryName(const Entry &entry) { 95254721Semaste return GetEntryName(static_cast<EntryType>(entry.type)); 96254721Semaste } 97254721Semaste 98254721Semaste static const char * 99254721Semaste GetEntryName(EntryType type); 100254721Semaste 101254721Semaste void 102254721Semaste DumpToLog(lldb_private::Log *log) const; 103254721Semaste 104254721Semasteprivate: 105254721Semaste lldb_private::Process *m_process; 106254721Semaste EntryVector m_auxv; 107254721Semaste 108254721Semaste lldb::DataBufferSP 109254721Semaste GetAuxvData(); 110254721Semaste 111254721Semaste void 112254721Semaste ParseAuxv(lldb_private::DataExtractor &data); 113254721Semaste}; 114254721Semaste 115254721Semaste#endif 116