ceff6644bb
This patch removes the comments grouping header includes. They were added after running IWYU over the LLDB codebase. However they add little value, are often outdates and burdensome to maintain. llvm-svn: 346626
110 lines
3.8 KiB
C++
110 lines
3.8 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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#include <vector>
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#include "lldb/lldb-forward.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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/// 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
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/// construction this class locates and parses this information and provides a
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/// simple 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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/// On Linux, running "LD_SHOW_AUXV=1 ./executable" will spew AUX
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/// information. Added AUXV prefix to avoid potential conflicts with system-
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/// defined macros
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enum EntryType {
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AUXV_AT_NULL = 0, ///< End of auxv.
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AUXV_AT_IGNORE = 1, ///< Ignore entry.
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AUXV_AT_EXECFD = 2, ///< File descriptor of program.
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AUXV_AT_PHDR = 3, ///< Program headers.
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AUXV_AT_PHENT = 4, ///< Size of program header.
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AUXV_AT_PHNUM = 5, ///< Number of program headers.
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AUXV_AT_PAGESZ = 6, ///< Page size.
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AUXV_AT_BASE = 7, ///< Interpreter base address.
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AUXV_AT_FLAGS = 8, ///< Flags.
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AUXV_AT_ENTRY = 9, ///< Program entry point.
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AUXV_AT_NOTELF = 10, ///< Set if program is not an ELF.
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AUXV_AT_UID = 11, ///< UID.
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AUXV_AT_EUID = 12, ///< Effective UID.
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AUXV_AT_GID = 13, ///< GID.
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AUXV_AT_EGID = 14, ///< Effective GID.
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AUXV_AT_CLKTCK = 17, ///< Clock frequency (e.g. times(2)).
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AUXV_AT_PLATFORM = 15, ///< String identifying platform.
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AUXV_AT_HWCAP = 16, ///< Machine dependent hints about processor capabilities.
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AUXV_AT_FPUCW = 18, ///< Used FPU control word.
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AUXV_AT_DCACHEBSIZE = 19, ///< Data cache block size.
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AUXV_AT_ICACHEBSIZE = 20, ///< Instruction cache block size.
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AUXV_AT_UCACHEBSIZE = 21, ///< Unified cache block size.
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AUXV_AT_IGNOREPPC = 22, ///< Entry should be ignored.
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AUXV_AT_SECURE = 23, ///< Boolean, was exec setuid-like?
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AUXV_AT_BASE_PLATFORM = 24, ///< String identifying real platforms.
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AUXV_AT_RANDOM = 25, ///< Address of 16 random bytes.
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AUXV_AT_EXECFN = 31, ///< Filename of executable.
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AUXV_AT_SYSINFO = 32, ///< Pointer to the global system page used for system
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///calls and other nice things.
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AUXV_AT_SYSINFO_EHDR = 33,
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AUXV_AT_L1I_CACHESHAPE = 34, ///< Shapes of the caches.
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AUXV_AT_L1D_CACHESHAPE = 35,
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AUXV_AT_L2_CACHESHAPE = 36,
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AUXV_AT_L3_CACHESHAPE = 37,
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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 FindEntry(EntryType type) const;
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static const char *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 *GetEntryName(EntryType type);
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void DumpToLog(lldb_private::Log *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 GetAuxvData();
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void ParseAuxv(lldb_private::DataExtractor &data);
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};
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#endif
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