operatingsystem.hh revision 5543:3af77710f397
1/* 2 * Copyright (c) 2004-2005 The Regents of The University of Michigan 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are 7 * met: redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer; 9 * redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution; 12 * neither the name of the copyright holders nor the names of its 13 * contributors may be used to endorse or promote products derived from 14 * this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 * 28 * Authors: Gabe Black 29 */ 30 31#ifndef __KERN_OPERATINGSYSTEM_HH__ 32#define __KERN_OPERATINGSYSTEM_HH__ 33 34#include "config/full_system.hh" 35 36#include <inttypes.h> 37 38#if FULL_SYSTEM 39 40class OperatingSystem {}; 41 42#else //!FULL_SYSTEM 43 44/// This struct is used to build an target-OS-dependent table that 45/// maps the target's open() flags to the host open() flags. 46struct OpenFlagTransTable { 47 int tgtFlag; //!< Target system flag value. 48 int hostFlag; //!< Corresponding host system flag value. 49}; 50 51 52/// 53/// This class encapsulates the types, structures, constants, 54/// functions, and syscall-number mappings specific to an operating system 55/// syscall interface. 56/// 57class OperatingSystem { 58 59 public: 60 61 /// Stat buffer. Note that we can't call it 'stat' since that 62 /// gets #defined to something else on some systems. This type 63 /// can be specialized by architecture specific "Linux" classes 64 typedef void tgt_stat; 65 66 // same for stat64 67 typedef void tgt_stat64; 68 69 /// Length of strings in struct utsname (plus 1 for null char). 70 static const int _SYS_NMLN = 65; 71 72 /// Interface struct for uname(). 73 typedef struct { 74 char sysname[_SYS_NMLN]; //!< System name. 75 char nodename[_SYS_NMLN]; //!< Node name. 76 char release[_SYS_NMLN]; //!< OS release. 77 char version[_SYS_NMLN]; //!< OS version. 78 char machine[_SYS_NMLN]; //!< Machine type. 79 } utsname; 80 81 /// Limit struct for getrlimit/setrlimit. 82 typedef struct { 83 uint64_t rlim_cur; //!< soft limit 84 uint64_t rlim_max; //!< hard limit 85 } rlimit; 86 87 /// For gettimeofday(). 88 typedef struct { 89 int64_t tv_sec; //!< seconds 90 int64_t tv_usec; //!< microseconds 91 } timeval; 92 93 // For writev/readv 94 typedef struct { 95 uint64_t iov_base; // void * 96 uint64_t iov_len; 97 } tgt_iovec; 98 99 100 /// For getrusage(). 101 typedef struct { 102 timeval ru_utime; //!< user time used 103 timeval ru_stime; //!< system time used 104 int64_t ru_maxrss; //!< max rss 105 int64_t ru_ixrss; //!< integral shared memory size 106 int64_t ru_idrss; //!< integral unshared data " 107 int64_t ru_isrss; //!< integral unshared stack " 108 int64_t ru_minflt; //!< page reclaims - total vmfaults 109 int64_t ru_majflt; //!< page faults 110 int64_t ru_nswap; //!< swaps 111 int64_t ru_inblock; //!< block input operations 112 int64_t ru_oublock; //!< block output operations 113 int64_t ru_msgsnd; //!< messages sent 114 int64_t ru_msgrcv; //!< messages received 115 int64_t ru_nsignals; //!< signals received 116 int64_t ru_nvcsw; //!< voluntary context switches 117 int64_t ru_nivcsw; //!< involuntary " 118 } rusage; 119 120}; // class OperatingSystem 121 122 123#endif // FULL_SYSTEM 124 125#endif // __OPERATINGSYSTEM_HH__ 126