forked from OSchip/llvm-project
112 lines
3.9 KiB
C++
112 lines
3.9 KiB
C++
//===-- 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.
|
|
/// Added AUXV prefix to avoid potential conflicts with system-defined macros
|
|
enum EntryType {
|
|
AUXV_AT_NULL = 0, ///< End of auxv.
|
|
AUXV_AT_IGNORE = 1, ///< Ignore entry.
|
|
AUXV_AT_EXECFD = 2, ///< File descriptor of program.
|
|
AUXV_AT_PHDR = 3, ///< Program headers.
|
|
AUXV_AT_PHENT = 4, ///< Size of program header.
|
|
AUXV_AT_PHNUM = 5, ///< Number of program headers.
|
|
AUXV_AT_PAGESZ = 6, ///< Page size.
|
|
AUXV_AT_BASE = 7, ///< Interpreter base address.
|
|
AUXV_AT_FLAGS = 8, ///< Flags.
|
|
AUXV_AT_ENTRY = 9, ///< Program entry point.
|
|
AUXV_AT_NOTELF = 10, ///< Set if program is not an ELF.
|
|
AUXV_AT_UID = 11, ///< UID.
|
|
AUXV_AT_EUID = 12, ///< Effective UID.
|
|
AUXV_AT_GID = 13, ///< GID.
|
|
AUXV_AT_EGID = 14, ///< Effective GID.
|
|
AUXV_AT_CLKTCK = 17, ///< Clock frequency (e.g. times(2)).
|
|
AUXV_AT_PLATFORM = 15, ///< String identifying platform.
|
|
AUXV_AT_HWCAP = 16, ///< Machine dependent hints about processor capabilities.
|
|
AUXV_AT_FPUCW = 18, ///< Used FPU control word.
|
|
AUXV_AT_DCACHEBSIZE = 19, ///< Data cache block size.
|
|
AUXV_AT_ICACHEBSIZE = 20, ///< Instruction cache block size.
|
|
AUXV_AT_UCACHEBSIZE = 21, ///< Unified cache block size.
|
|
AUXV_AT_IGNOREPPC = 22, ///< Entry should be ignored.
|
|
AUXV_AT_SECURE = 23, ///< Boolean, was exec setuid-like?
|
|
AUXV_AT_BASE_PLATFORM = 24, ///< String identifying real platforms.
|
|
AUXV_AT_RANDOM = 25, ///< Address of 16 random bytes.
|
|
AUXV_AT_EXECFN = 31, ///< Filename of executable.
|
|
AUXV_AT_SYSINFO = 32, ///< Pointer to the global system page used for system
|
|
///calls and other nice things.
|
|
AUXV_AT_SYSINFO_EHDR = 33,
|
|
AUXV_AT_L1I_CACHESHAPE = 34, ///< Shapes of the caches.
|
|
AUXV_AT_L1D_CACHESHAPE = 35,
|
|
AUXV_AT_L2_CACHESHAPE = 36,
|
|
AUXV_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
|