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31 #ifndef __KERN_OPERATINGSYSTEM_HH__
32 #define __KERN_OPERATINGSYSTEM_HH__
34 #include "base/types.hh"
35 #include "config/full_system.hh"
39 class OperatingSystem {};
47 /// This struct is used to build an target-OS-dependent table that
48 /// maps the target's open() flags to the host open() flags.
49 struct OpenFlagTransTable {
50 int tgtFlag; //!< Target system flag value.
51 int hostFlag; //!< Corresponding host system flag value.
56 /// This class encapsulates the types, structures, constants,
57 /// functions, and syscall-number mappings specific to an operating system
58 /// syscall interface.
60 class OperatingSystem {
64 /// Stat buffer. Note that we can't call it 'stat' since that
65 /// gets #defined to something else on some systems. This type
66 /// can be specialized by architecture specific "Linux" classes
67 typedef void tgt_stat;
70 typedef void tgt_stat64;
72 /// Length of strings in struct utsname (plus 1 for null char).
73 static const int _SYS_NMLN = 65;
75 /// Interface struct for uname().
77 char sysname[_SYS_NMLN]; //!< System name.
78 char nodename[_SYS_NMLN]; //!< Node name.
79 char release[_SYS_NMLN]; //!< OS release.
80 char version[_SYS_NMLN]; //!< OS version.
81 char machine[_SYS_NMLN]; //!< Machine type.
84 /// Limit struct for getrlimit/setrlimit.
86 uint64_t rlim_cur; //!< soft limit
87 uint64_t rlim_max; //!< hard limit
90 /// For gettimeofday().
92 int64_t tv_sec; //!< seconds
93 int64_t tv_usec; //!< microseconds
98 uint64_t iov_base; // void *
105 timeval ru_utime; //!< user time used
106 timeval ru_stime; //!< system time used
107 int64_t ru_maxrss; //!< max rss
108 int64_t ru_ixrss; //!< integral shared memory size
109 int64_t ru_idrss; //!< integral unshared data "
110 int64_t ru_isrss; //!< integral unshared stack "
111 int64_t ru_minflt; //!< page reclaims - total vmfaults
112 int64_t ru_majflt; //!< page faults
113 int64_t ru_nswap; //!< swaps
114 int64_t ru_inblock; //!< block input operations
115 int64_t ru_oublock; //!< block output operations
116 int64_t ru_msgsnd; //!< messages sent
117 int64_t ru_msgrcv; //!< messages received
118 int64_t ru_nsignals; //!< signals received
119 int64_t ru_nvcsw; //!< voluntary context switches
120 int64_t ru_nivcsw; //!< involuntary "
123 static int openSpecialFile(std::string path, LiveProcess *process, ThreadContext *tc);
125 static const bool mmapGrowsUp = true;
127 static bool mmapGrowsDown() { return false; }
129 }; // class OperatingSystem
132 #endif // FULL_SYSTEM
134 #endif // __OPERATINGSYSTEM_HH__